mysqld.cc 258 KB
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/* Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
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   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; version 2 of the License.
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   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

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#include "my_global.h"                          /* NO_EMBEDDED_ACCESS_CHECKS */
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#include "sql_priv.h"
#include "unireg.h"
#include <signal.h>
#ifndef __WIN__
#include <netdb.h>        // getservbyname, servent
#endif
#include "sql_parse.h"    // test_if_data_home_dir
#include "sql_cache.h"    // query_cache, query_cache_*
#include "sql_locale.h"   // MY_LOCALES, my_locales, my_locale_by_name
#include "sql_show.h"     // free_status_vars, add_status_vars,
                          // reset_status_vars
#include "strfunc.h"      // find_set_from_flags
#include "parse_file.h"   // File_parser_dummy_hook
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#include "sql_db.h"       // my_dboptions_cache_free
                          // my_dboptions_cache_init
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#include "sql_table.h"    // release_ddl_log, execute_ddl_log_recovery
#include "sql_connect.h"  // free_max_user_conn, init_max_user_conn,
                          // handle_one_connection
#include "sql_time.h"     // known_date_time_formats,
                          // get_date_time_format_str,
                          // date_time_format_make
#include "tztime.h"       // my_tz_free, my_tz_init, my_tz_SYSTEM
#include "hostname.h"     // hostname_cache_free, hostname_cache_init
#include "sql_acl.h"      // acl_free, grant_free, acl_init,
                          // grant_init
#include "sql_base.h"     // table_def_free, table_def_init,
                          // cached_open_tables,
                          // cached_table_definitions
#include "sql_test.h"     // mysql_print_status
#include "item_create.h"  // item_create_cleanup, item_create_init
#include "sql_servers.h"  // servers_free, servers_init
#include "init.h"         // unireg_init
#include "derror.h"       // init_errmessage
#include "derror.h"       // init_errmessage
#include "des_key_file.h" // load_des_key_file
#include "sql_manager.h"  // stop_handle_manager, start_handle_manager
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#include <m_ctype.h>
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#include <my_dir.h>
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#include <my_bit.h>
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#include "slave.h"
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#include "rpl_mi.h"
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#include "sql_repl.h"
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#include "rpl_filter.h"
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#include "repl_failsafe.h"
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#include <sql_common.h>
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#include <my_stacktrace.h>
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#include "mysqld_suffix.h"
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#include "mysys_err.h"
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#include "events.h"
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#include "sql_audit.h"
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#include "probes_mysql.h"
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#include "scheduler.h"
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#include "debug_sync.h"
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#include "sql_callback.h"
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#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
#include "../storage/perfschema/pfs_server.h"
#endif /* WITH_PERFSCHEMA_STORAGE_ENGINE */

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#include "keycaches.h"
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#include "../storage/myisam/ha_myisam.h"
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#include "set_var.h"
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#include "rpl_injector.h"

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#include "rpl_handler.h"

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#ifdef HAVE_SYS_PRCTL_H
#include <sys/prctl.h>
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#endif

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#include <thr_alarm.h>
#include <ft_global.h>
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#include <errmsg.h>
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#include "sp_rcontext.h"
#include "sp_cache.h"
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#include "sql_reload.h"  // reload_acl_and_cache
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#ifdef HAVE_POLL_H
#include <poll.h>
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#endif

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#define mysqld_charset &my_charset_latin1
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/* We have HAVE_purify below as this speeds up the shutdown of MySQL */

#if defined(HAVE_DEC_3_2_THREADS) || defined(SIGNALS_DONT_BREAK_READ) || defined(HAVE_purify) && defined(__linux__)
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#define HAVE_CLOSE_SERVER_SOCK 1
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#endif
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extern "C" {					// Because of SCO 3.2V4.2
#include <errno.h>
#include <sys/stat.h>
#ifndef __GNU_LIBRARY__
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#define __GNU_LIBRARY__				// Skip warnings in getopt.h
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#endif
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#include <my_getopt.h>
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#ifdef HAVE_SYSENT_H
#include <sysent.h>
#endif
#ifdef HAVE_PWD_H
#include <pwd.h>				// For getpwent
#endif
#ifdef HAVE_GRP_H
#include <grp.h>
#endif
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#include <my_net.h>
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#if !defined(__WIN__)
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#include <sys/resource.h>
#ifdef HAVE_SYS_UN_H
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#include <sys/un.h>
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#endif
#ifdef HAVE_SELECT_H
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#include <select.h>
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#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#include <sys/utsname.h>
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#endif /* __WIN__ */
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#include <my_libwrap.h>
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#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif

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#ifdef __WIN__ 
#include <crtdbg.h>
#define SIGNAL_FMT "exception 0x%x"
#else
#define SIGNAL_FMT "signal %d"
#endif

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#ifdef HAVE_SOLARIS_LARGE_PAGES
#include <sys/mman.h>
#if defined(__sun__) && defined(__GNUC__) && defined(__cplusplus) \
    && defined(_XOPEN_SOURCE)
extern int getpagesizes(size_t *, int);
extern int getpagesizes2(size_t *, int);
extern int memcntl(caddr_t, size_t, int, caddr_t, int, int);
#endif /* __sun__ ... */
#endif /* HAVE_SOLARIS_LARGE_PAGES */

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#ifdef _AIX41
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int initgroups(const char *,unsigned int);
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#endif

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#if defined(__FreeBSD__) && defined(HAVE_IEEEFP_H)
#include <ieeefp.h>
#ifdef HAVE_FP_EXCEPT				// Fix type conflict
typedef fp_except fp_except_t;
#endif
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#endif /* __FreeBSD__ && HAVE_IEEEFP_H */
#ifdef HAVE_SYS_FPU_H
/* for IRIX to use set_fpc_csr() */
#include <sys/fpu.h>
#endif
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#ifdef HAVE_FPU_CONTROL_H
#include <fpu_control.h>
#endif
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#if defined(__i386__) && !defined(HAVE_FPU_CONTROL_H)
# define fpu_control_t unsigned int
# define _FPU_EXTENDED 0x300
# define _FPU_DOUBLE 0x200
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# if defined(__GNUC__) || (defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x590)
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#  define _FPU_GETCW(cw) asm volatile ("fnstcw %0" : "=m" (*&cw))
#  define _FPU_SETCW(cw) asm volatile ("fldcw %0" : : "m" (*&cw))
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# else
#  define _FPU_GETCW(cw) (cw= 0)
#  define _FPU_SETCW(cw)
# endif
#endif
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extern "C" my_bool reopen_fstreams(const char *filename,
                                   FILE *outstream, FILE *errstream);

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inline void setup_fpu()
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{
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#if defined(__FreeBSD__) && defined(HAVE_IEEEFP_H)
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  /* We can't handle floating point exceptions with threads, so disable
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     this on freebsd
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     Don't fall for overflow, underflow,divide-by-zero or loss of precision
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  */
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#if defined(__i386__)
  fpsetmask(~(FP_X_INV | FP_X_DNML | FP_X_OFL | FP_X_UFL | FP_X_DZ |
	      FP_X_IMP));
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#else
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  fpsetmask(~(FP_X_INV |             FP_X_OFL | FP_X_UFL | FP_X_DZ |
              FP_X_IMP));
#endif /* __i386__ */
#endif /* __FreeBSD__ && HAVE_IEEEFP_H */
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#ifdef HAVE_FESETROUND
    /* Set FPU rounding mode to "round-to-nearest" */
  fesetround(FE_TONEAREST);
#endif /* HAVE_FESETROUND */
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  /*
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    x86 (32-bit) requires FPU precision to be explicitly set to 64 bit
    (double precision) for portable results of floating point operations.
    However, there is no need to do so if compiler is using SSE2 for floating
    point, double values will be stored and processed in 64 bits anyway.
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  */
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#if defined(__i386__) && !defined(__SSE2_MATH__)
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#if defined(_WIN32)
#if !defined(_WIN64)
  _control87(_PC_53, MCW_PC);
#endif /* !_WIN64 */
#else /* !_WIN32 */
  fpu_control_t cw;
  _FPU_GETCW(cw);
  cw= (cw & ~_FPU_EXTENDED) | _FPU_DOUBLE;
  _FPU_SETCW(cw);
#endif /* _WIN32 && */
#endif /* __i386__ */

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#if defined(__sgi) && defined(HAVE_SYS_FPU_H)
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  /* Enable denormalized DOUBLE values support for IRIX */
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  union fpc_csr n;
  n.fc_word = get_fpc_csr();
  n.fc_struct.flush = 0;
  set_fpc_csr(n.fc_word);
#endif
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}
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} /* cplusplus */

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#define MYSQL_KILL_SIGNAL SIGTERM
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#ifdef HAVE_GLIBC2_STYLE_GETHOSTBYNAME_R
#include <sys/types.h>
#else
#include <my_pthread.h>			// For thr_setconcurency()
#endif

#ifdef SOLARIS
extern "C" int gethostname(char *name, int namelen);
#endif

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extern "C" sig_handler handle_segfault(int sig);
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#if defined(__linux__)
#define ENABLE_TEMP_POOL 1
#else
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#define ENABLE_TEMP_POOL 0
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#endif

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/* Constants */
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#include <welcome_copyright_notice.h> // ORACLE_WELCOME_COPYRIGHT_NOTICE

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const char *show_comp_option_name[]= {"YES", "NO", "DISABLED"};
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static const char *tc_heuristic_recover_names[]=
{
  "COMMIT", "ROLLBACK", NullS
};
static TYPELIB tc_heuristic_recover_typelib=
{
  array_elements(tc_heuristic_recover_names)-1,"",
  tc_heuristic_recover_names, NULL
};
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const char *first_keyword= "first", *binary_keyword= "BINARY";
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const char *my_localhost= "localhost", *delayed_user= "DELAYED";
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bool opt_large_files= sizeof(my_off_t) > 4;
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/*
  Used with --help for detailed option
*/
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static my_bool opt_help= 0, opt_verbose= 0;
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arg_cmp_func Arg_comparator::comparator_matrix[5][2] =
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{{&Arg_comparator::compare_string,     &Arg_comparator::compare_e_string},
 {&Arg_comparator::compare_real,       &Arg_comparator::compare_e_real},
 {&Arg_comparator::compare_int_signed, &Arg_comparator::compare_e_int},
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 {&Arg_comparator::compare_row,        &Arg_comparator::compare_e_row},
 {&Arg_comparator::compare_decimal,    &Arg_comparator::compare_e_decimal}};
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/* static variables */

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#ifdef HAVE_PSI_INTERFACE
#if (defined(_WIN32) || defined(HAVE_SMEM)) && !defined(EMBEDDED_LIBRARY)
static PSI_thread_key key_thread_handle_con_namedpipes;
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static PSI_cond_key key_COND_handler_count;
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#endif /* _WIN32 || HAVE_SMEM && !EMBEDDED_LIBRARY */

#if defined(HAVE_SMEM) && !defined(EMBEDDED_LIBRARY)
static PSI_thread_key key_thread_handle_con_sharedmem;
#endif /* HAVE_SMEM && !EMBEDDED_LIBRARY */

#if (defined(_WIN32) || defined(HAVE_SMEM)) && !defined(EMBEDDED_LIBRARY)
static PSI_thread_key key_thread_handle_con_sockets;
#endif /* _WIN32 || HAVE_SMEM && !EMBEDDED_LIBRARY */

#ifdef __WIN__
static PSI_thread_key key_thread_handle_shutdown;
#endif /* __WIN__ */
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#if defined (HAVE_OPENSSL) && !defined(HAVE_YASSL)
static PSI_rwlock_key key_rwlock_openssl;
#endif
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#endif /* HAVE_PSI_INTERFACE */

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/* the default log output is log tables */
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static bool lower_case_table_names_used= 0;
static bool volatile select_thread_in_use, signal_thread_in_use;
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/* See Bug#56666 and Bug#56760 */;
volatile bool ready_to_exit;
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static my_bool opt_debugging= 0, opt_external_locking= 0, opt_console= 0;
static my_bool opt_short_log_format= 0;
static uint kill_cached_threads, wake_thread;
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static ulong killed_threads;
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static ulong max_used_connections;
static volatile ulong cached_thread_count= 0;
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static char *mysqld_user, *mysqld_chroot;
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static char *default_character_set_name;
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static char *character_set_filesystem_name;
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static char *lc_messages;
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static char *lc_time_names_name;
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static char *my_bind_addr_str;
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static char *default_collation_name;
char *default_storage_engine;
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static char compiled_default_collation_name[]= MYSQL_DEFAULT_COLLATION_NAME;
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static I_List<THD> thread_cache;
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static bool binlog_format_used= false;

LEX_STRING opt_init_connect, opt_init_slave;
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static mysql_cond_t COND_thread_cache, COND_flush_thread_cache;
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/* Global variables */
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bool opt_bin_log, opt_ignore_builtin_innodb= 0;
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my_bool opt_log, opt_slow_log;
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ulonglong log_output_options;
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my_bool opt_log_queries_not_using_indexes= 0;
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bool opt_error_log= IF_WIN(1,0);
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bool opt_disable_networking=0, opt_skip_show_db=0;
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bool opt_skip_name_resolve=0;
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my_bool opt_character_set_client_handshake= 1;
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bool server_id_supplied = 0;
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bool opt_endinfo, using_udf_functions;
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my_bool locked_in_memory;
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bool opt_using_transactions;
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bool volatile abort_loop;
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bool volatile shutdown_in_progress;
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/*
  True if the bootstrap thread is running. Protected by LOCK_thread_count,
  just like thread_count.
  Used in bootstrap() function to determine if the bootstrap thread
  has completed. Note, that we can't use 'thread_count' instead,
  since in 5.1, in presence of the Event Scheduler, there may be
  event threads running in parallel, so it's impossible to know
  what value of 'thread_count' is a sign of completion of the
  bootstrap thread.

  At the same time, we can't start the event scheduler after
  bootstrap either, since we want to be able to process event-related
  SQL commands in the init file and in --bootstrap mode.
*/
bool in_bootstrap= FALSE;
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/**
   @brief 'grant_option' is used to indicate if privileges needs
   to be checked, in which case the lock, LOCK_grant, is used
   to protect access to the grant table.
   @note This flag is dropped in 5.1 
   @see grant_init()
 */
bool volatile grant_option;
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my_bool opt_skip_slave_start = 0; ///< If set, slave is not autostarted
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my_bool opt_reckless_slave = 0;
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my_bool opt_enable_named_pipe= 0;
my_bool opt_local_infile, opt_slave_compressed_protocol;
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my_bool opt_safe_user_create = 0;
my_bool opt_show_slave_auth_info;
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my_bool opt_log_slave_updates= 0;
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char *opt_slave_skip_errors;

/**
  compatibility option:
    - index usage hints (USE INDEX without a FOR clause) behave as in 5.0
*/
my_bool old_mode;
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/*
  Legacy global handlerton. These will be removed (please do not add more).
*/
handlerton *heap_hton;
handlerton *myisam_hton;
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handlerton *partition_hton;
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my_bool opt_readonly= 0, use_temp_pool, relay_log_purge;
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my_bool relay_log_recovery;
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my_bool opt_sync_frm, opt_allow_suspicious_udfs;
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my_bool opt_secure_auth= 0;
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char* opt_secure_file_priv;
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my_bool opt_log_slow_admin_statements= 0;
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my_bool opt_log_slow_slave_statements= 0;
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my_bool lower_case_file_system= 0;
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my_bool opt_large_pages= 0;
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my_bool opt_super_large_pages= 0;
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my_bool opt_myisam_use_mmap= 0;
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uint   opt_large_page_size= 0;
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#if defined(ENABLED_DEBUG_SYNC)
uint    opt_debug_sync_timeout= 0;
#endif /* defined(ENABLED_DEBUG_SYNC) */
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my_bool opt_old_style_user_limits= 0, trust_function_creators= 0;
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/*
  True if there is at least one per-hour limit for some user, so we should
  check them before each query (and possibly reset counters when hour is
  changed). False otherwise.
*/
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volatile bool mqh_used = 0;
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my_bool opt_noacl;
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my_bool sp_automatic_privileges= 1;
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ulong opt_binlog_rows_event_max_size;
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const char *binlog_format_names[]= {"MIXED", "STATEMENT", "ROW", NullS};
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#ifdef HAVE_INITGROUPS
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static bool calling_initgroups= FALSE; /**< Used in SIGSEGV handler. */
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#endif
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uint mysqld_port, test_flags, select_errors, dropping_tables, ha_open_options;
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uint mysqld_port_timeout;
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ulong delay_key_write_options;
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uint protocol_version;
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uint lower_case_table_names;
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ulong tc_heuristic_recover= 0;
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uint volatile thread_count;
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int32 thread_running;
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ulong thread_created;
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ulong back_log, connect_timeout, concurrency, server_id;
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ulong table_cache_size, table_def_size;
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ulong what_to_log;
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ulong slow_launch_time, slave_open_temp_tables;
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ulong open_files_limit, max_binlog_size, max_relay_log_size;
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ulong slave_trans_retries;
uint  slave_net_timeout;
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ulong slave_exec_mode_options;
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ulonglong slave_type_conversions_options;
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ulong thread_cache_size=0;
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ulong binlog_cache_size=0;
ulonglong  max_binlog_cache_size=0;
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ulong query_cache_size=0;
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ulong refresh_version;  /* Increments on each reload */
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query_id_t global_query_id;
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my_atomic_rwlock_t global_query_id_lock;
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my_atomic_rwlock_t thread_running_lock;
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ulong aborted_threads, aborted_connects;
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ulong delayed_insert_timeout, delayed_insert_limit, delayed_queue_size;
ulong delayed_insert_threads, delayed_insert_writes, delayed_rows_in_use;
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ulong delayed_insert_errors,flush_time;
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ulong specialflag=0;
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ulong binlog_cache_use= 0, binlog_cache_disk_use= 0;
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ulong max_connections, max_connect_errors;
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/**
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  Limit of the total number of prepared statements in the server.
  Is necessary to protect the server against out-of-memory attacks.
*/
ulong max_prepared_stmt_count;
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/**
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  Current total number of prepared statements in the server. This number
  is exact, and therefore may not be equal to the difference between
  `com_stmt_prepare' and `com_stmt_close' (global status variables), as
  the latter ones account for all registered attempts to prepare
  a statement (including unsuccessful ones).  Prepared statements are
  currently connection-local: if the same SQL query text is prepared in
  two different connections, this counts as two distinct prepared
  statements.
*/
ulong prepared_stmt_count=0;
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ulong thread_id=1L,current_pid;
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ulong slow_launch_threads = 0;
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uint sync_binlog_period= 0, sync_relaylog_period= 0,
     sync_relayloginfo_period= 0, sync_masterinfo_period= 0;
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ulong expire_logs_days = 0;
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ulong rpl_recovery_rank=0;

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const double log_10[] = {
  1e000, 1e001, 1e002, 1e003, 1e004, 1e005, 1e006, 1e007, 1e008, 1e009,
  1e010, 1e011, 1e012, 1e013, 1e014, 1e015, 1e016, 1e017, 1e018, 1e019,
  1e020, 1e021, 1e022, 1e023, 1e024, 1e025, 1e026, 1e027, 1e028, 1e029,
  1e030, 1e031, 1e032, 1e033, 1e034, 1e035, 1e036, 1e037, 1e038, 1e039,
  1e040, 1e041, 1e042, 1e043, 1e044, 1e045, 1e046, 1e047, 1e048, 1e049,
  1e050, 1e051, 1e052, 1e053, 1e054, 1e055, 1e056, 1e057, 1e058, 1e059,
  1e060, 1e061, 1e062, 1e063, 1e064, 1e065, 1e066, 1e067, 1e068, 1e069,
  1e070, 1e071, 1e072, 1e073, 1e074, 1e075, 1e076, 1e077, 1e078, 1e079,
  1e080, 1e081, 1e082, 1e083, 1e084, 1e085, 1e086, 1e087, 1e088, 1e089,
  1e090, 1e091, 1e092, 1e093, 1e094, 1e095, 1e096, 1e097, 1e098, 1e099,
  1e100, 1e101, 1e102, 1e103, 1e104, 1e105, 1e106, 1e107, 1e108, 1e109,
  1e110, 1e111, 1e112, 1e113, 1e114, 1e115, 1e116, 1e117, 1e118, 1e119,
  1e120, 1e121, 1e122, 1e123, 1e124, 1e125, 1e126, 1e127, 1e128, 1e129,
  1e130, 1e131, 1e132, 1e133, 1e134, 1e135, 1e136, 1e137, 1e138, 1e139,
  1e140, 1e141, 1e142, 1e143, 1e144, 1e145, 1e146, 1e147, 1e148, 1e149,
  1e150, 1e151, 1e152, 1e153, 1e154, 1e155, 1e156, 1e157, 1e158, 1e159,
  1e160, 1e161, 1e162, 1e163, 1e164, 1e165, 1e166, 1e167, 1e168, 1e169,
  1e170, 1e171, 1e172, 1e173, 1e174, 1e175, 1e176, 1e177, 1e178, 1e179,
  1e180, 1e181, 1e182, 1e183, 1e184, 1e185, 1e186, 1e187, 1e188, 1e189,
  1e190, 1e191, 1e192, 1e193, 1e194, 1e195, 1e196, 1e197, 1e198, 1e199,
  1e200, 1e201, 1e202, 1e203, 1e204, 1e205, 1e206, 1e207, 1e208, 1e209,
  1e210, 1e211, 1e212, 1e213, 1e214, 1e215, 1e216, 1e217, 1e218, 1e219,
  1e220, 1e221, 1e222, 1e223, 1e224, 1e225, 1e226, 1e227, 1e228, 1e229,
  1e230, 1e231, 1e232, 1e233, 1e234, 1e235, 1e236, 1e237, 1e238, 1e239,
  1e240, 1e241, 1e242, 1e243, 1e244, 1e245, 1e246, 1e247, 1e248, 1e249,
  1e250, 1e251, 1e252, 1e253, 1e254, 1e255, 1e256, 1e257, 1e258, 1e259,
  1e260, 1e261, 1e262, 1e263, 1e264, 1e265, 1e266, 1e267, 1e268, 1e269,
  1e270, 1e271, 1e272, 1e273, 1e274, 1e275, 1e276, 1e277, 1e278, 1e279,
  1e280, 1e281, 1e282, 1e283, 1e284, 1e285, 1e286, 1e287, 1e288, 1e289,
  1e290, 1e291, 1e292, 1e293, 1e294, 1e295, 1e296, 1e297, 1e298, 1e299,
  1e300, 1e301, 1e302, 1e303, 1e304, 1e305, 1e306, 1e307, 1e308
};
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time_t server_start_time, flush_status_time;
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char mysql_home[FN_REFLEN], pidfile_name[FN_REFLEN], system_time_zone[30];
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char default_logfile_name[FN_REFLEN];
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char *default_tz_name;
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char log_error_file[FN_REFLEN], glob_hostname[FN_REFLEN];
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char mysql_real_data_home[FN_REFLEN],
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     lc_messages_dir[FN_REFLEN], reg_ext[FN_EXTLEN],
     mysql_charsets_dir[FN_REFLEN],
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     *opt_init_file, *opt_tc_log_file;
char *lc_messages_dir_ptr, *log_error_file_ptr;
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char mysql_unpacked_real_data_home[FN_REFLEN];
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int mysql_unpacked_real_data_home_len;
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uint mysql_real_data_home_len, mysql_data_home_len= 1;
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uint reg_ext_length;
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const key_map key_map_empty(0);
key_map key_map_full(0);                        // Will be initialized later

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DATE_TIME_FORMAT global_date_format, global_datetime_format, global_time_format;
Time_zone *default_tz;
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char *mysql_data_home= const_cast<char*>(".");
const char *mysql_real_data_home_ptr= mysql_real_data_home;
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char server_version[SERVER_VERSION_LENGTH];
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char *mysqld_unix_port, *opt_mysql_tmpdir;
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ulong thread_handling;
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/** name of reference on left expression in rewritten IN subquery */
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const char *in_left_expr_name= "<left expr>";
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/** name of additional condition */
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const char *in_additional_cond= "<IN COND>";
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const char *in_having_cond= "<IN HAVING>";

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my_decimal decimal_zero;
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/* classes for comparation parsing/processing */
Eq_creator eq_creator;
Ne_creator ne_creator;
Gt_creator gt_creator;
Lt_creator lt_creator;
Ge_creator ge_creator;
Le_creator le_creator;

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MYSQL_FILE *bootstrap_file;
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int bootstrap_error;
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I_List<THD> threads;
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Rpl_filter* rpl_filter;
Rpl_filter* binlog_filter;
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struct system_variables global_system_variables;
struct system_variables max_system_variables;
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struct system_status_var global_status_var;
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MY_TMPDIR mysql_tmpdir_list;
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MY_BITMAP temp_pool;
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CHARSET_INFO *system_charset_info, *files_charset_info ;
CHARSET_INFO *national_charset_info, *table_alias_charset;
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CHARSET_INFO *character_set_filesystem;
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CHARSET_INFO *error_message_charset_info;
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MY_LOCALE *my_default_lc_messages;
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MY_LOCALE *my_default_lc_time_names;

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SHOW_COMP_OPTION have_ssl, have_symlink, have_dlopen, have_query_cache;
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SHOW_COMP_OPTION have_geometry, have_rtree_keys;
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SHOW_COMP_OPTION have_crypt, have_compress;
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SHOW_COMP_OPTION have_profiling;
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/* Thread specific variables */
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pthread_key(MEM_ROOT**,THR_MALLOC);
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pthread_key(THD*, THR_THD);
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mysql_mutex_t LOCK_thread_count;
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mysql_mutex_t
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  LOCK_status, LOCK_error_log, LOCK_uuid_generator,
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  LOCK_delayed_insert, LOCK_delayed_status, LOCK_delayed_create,
  LOCK_crypt,
  LOCK_global_system_variables,
  LOCK_user_conn, LOCK_slave_list, LOCK_active_mi,
  LOCK_connection_count, LOCK_error_messages;
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/**
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  The below lock protects access to two global server variables:
  max_prepared_stmt_count and prepared_stmt_count. These variables
  set the limit and hold the current total number of prepared statements
  in the server, respectively. As PREPARE/DEALLOCATE rate in a loaded
  server may be fairly high, we need a dedicated lock.
*/
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mysql_mutex_t LOCK_prepared_stmt_count;
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#ifdef HAVE_OPENSSL
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mysql_mutex_t LOCK_des_key_file;
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#endif
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mysql_rwlock_t LOCK_grant, LOCK_sys_init_connect, LOCK_sys_init_slave;
mysql_rwlock_t LOCK_system_variables_hash;
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mysql_cond_t COND_thread_count;
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pthread_t signal_thread;
pthread_attr_t connection_attrib;
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mysql_mutex_t LOCK_server_started;
mysql_cond_t COND_server_started;
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int mysqld_server_started= 0;
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File_parser_dummy_hook file_parser_dummy_hook;

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/* replication parameters, if master_host is not NULL, we are a slave */
uint report_port= MYSQL_PORT;
ulong master_retry_count=0;
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char *master_info_file;
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char *relay_log_info_file, *report_user, *report_password, *report_host;
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char *opt_relay_logname = 0, *opt_relaylog_index_name=0;
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char *opt_logname, *opt_slow_logname;
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/* Static variables */

static bool kill_in_progress, segfaulted;
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static my_bool opt_bootstrap, opt_myisam_log;
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static int cleanup_done;
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static ulong opt_specialflag;
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static char *opt_update_logname, *opt_binlog_index_name;
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char *mysql_home_ptr, *pidfile_name_ptr;
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/** Initial command line arguments (count), after load_defaults().*/
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static int defaults_argc;
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/**
  Initial command line arguments (arguments), after load_defaults().
  This memory is allocated by @c load_defaults() and should be freed
  using @c free_defaults().
  Do not modify defaults_argc / defaults_argv,
  use remaining_argc / remaining_argv instead to parse the command
  line arguments in multiple steps.
*/
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static char **defaults_argv;
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/** Remaining command line arguments (count), filtered by handle_options().*/
static int remaining_argc;
/** Remaining command line arguments (arguments), filtered by handle_options().*/
static char **remaining_argv;
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static char *opt_bin_logname;

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int orig_argc;
char **orig_argv;

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/*
  Since buffered_option_error_reporter is only used currently
  for parsing performance schema options, this code is not needed
  when the performance schema is not compiled in.
*/
#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
/**
  A log message for the error log, buffered in memory.
  Log messages are temporarily buffered when generated before the error log
  is initialized, and then printed once the error log is ready.
*/
class Buffered_log : public Sql_alloc
{
public:
  Buffered_log(enum loglevel level, const char *message);

  ~Buffered_log()
  {}

  void print(void);

private:
  /** Log message level. */
  enum loglevel m_level;
  /** Log message text. */
  String m_message;
};

/**
  Constructor.
  @param level          the message log level
  @param message        the message text
*/
Buffered_log::Buffered_log(enum loglevel level, const char *message)
  : m_level(level), m_message()
{
  m_message.copy(message, strlen(message), &my_charset_latin1);
}

/**
  Print a buffered log to the real log file.
*/
void Buffered_log::print()
{
  /*
    Since messages are buffered, they can be printed out
    of order with other entries in the log.
    Add "Buffered xxx" to the message text to prevent confusion.
  */
  switch(m_level)
  {
  case ERROR_LEVEL:
    sql_print_error("Buffered error: %s\n", m_message.c_ptr_safe());
    break;
  case WARNING_LEVEL:
    sql_print_warning("Buffered warning: %s\n", m_message.c_ptr_safe());
    break;
  case INFORMATION_LEVEL:
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    /*
      Messages printed as "information" still end up in the mysqld *error* log,
      but with a [Note] tag instead of an [ERROR] tag.
      While this is probably fine for a human reading the log,
      it is upsetting existing automated scripts used to parse logs,
      because such scripts are likely to not already handle [Note] properly.
      INFORMATION_LEVEL messages are simply silenced, on purpose,
      to avoid un needed verbosity.
    */
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    break;
  }
}

/**
  Collection of all the buffered log messages.
*/
class Buffered_logs
{
public:
  Buffered_logs()
  {}

  ~Buffered_logs()
  {}

  void init();
  void cleanup();

  void buffer(enum loglevel m_level, const char *msg);
  void print();
private:
  /**
    Memory root to use to store buffered logs.
    This memory root lifespan is between init and cleanup.
    Once the buffered logs are printed, they are not needed anymore,
    and all the memory used is reclaimed.
  */
  MEM_ROOT m_root;
  /** List of buffered log messages. */
  List<Buffered_log> m_list;
};

void Buffered_logs::init()
{
  init_alloc_root(&m_root, 1024, 0);
}

void Buffered_logs::cleanup()
{
  m_list.delete_elements();
  free_root(&m_root, MYF(0));
}

/**
  Add a log message to the buffer.
*/
void Buffered_logs::buffer(enum loglevel level, const char *msg)
{
  /*
    Do not let Sql_alloc::operator new(size_t) allocate memory,
    there is no memory root associated with the main() thread.
    Give explicitly the proper memory root to use to
    Sql_alloc::operator new(size_t, MEM_ROOT *) instead.
  */
  Buffered_log *log= new (&m_root) Buffered_log(level, msg);
  if (log)
    m_list.push_back(log, &m_root);
}

/**
  Print buffered log messages.
*/
void Buffered_logs::print()
{
  Buffered_log *log;
  List_iterator_fast<Buffered_log> it(m_list);
  while ((log= it++))
    log->print();
}

/** Logs reported before a logger is available. */
static Buffered_logs buffered_logs;

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#ifndef EMBEDDED_LIBRARY
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/**
  Error reporter that buffer log messages.
  @param level          log message level
  @param format         log message format string
*/
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C_MODE_START
static void buffered_option_error_reporter(enum loglevel level,
                                           const char *format, ...)
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{
  va_list args;
  char buffer[1024];

  va_start(args, format);
  my_vsnprintf(buffer, sizeof(buffer), format, args);
  va_end(args);
  buffered_logs.buffer(level, buffer);
}
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C_MODE_END
#endif /* !EMBEDDED_LIBRARY */
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#endif /* WITH_PERFSCHEMA_STORAGE_ENGINE */

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static my_socket unix_sock,ip_sock;
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struct rand_struct sql_rand; ///< used by sql_class.cc:THD::THD()
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#ifndef EMBEDDED_LIBRARY
struct passwd *user_info;
static pthread_t select_thread;
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static uint thr_kill_signal;
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#endif

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/* OS specific variables */

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#ifdef __WIN__
#undef	 getpid
#include <process.h>
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static mysql_cond_t COND_handler_count;
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static uint handler_count;
static bool start_mode=0, use_opt_args;
static int opt_argc;
static char **opt_argv;

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#if !defined(EMBEDDED_LIBRARY)
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static HANDLE hEventShutdown;
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static char shutdown_event_name[40];
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#include "nt_servc.h"
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static	 NTService  Service;	      ///< Service object for WinNT
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#endif /* EMBEDDED_LIBRARY */
#endif /* __WIN__ */

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#ifdef _WIN32
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static char pipe_name[512];
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static SECURITY_ATTRIBUTES saPipeSecurity;
static SECURITY_DESCRIPTOR sdPipeDescriptor;
static HANDLE hPipe = INVALID_HANDLE_VALUE;
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#endif
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#ifndef EMBEDDED_LIBRARY
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bool mysqld_embedded=0;
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#else
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bool mysqld_embedded=1;
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#endif

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static my_bool plugins_are_initialized= FALSE;

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#ifndef DBUG_OFF
static const char* default_dbug_option;
#endif
#ifdef HAVE_LIBWRAP
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const char *libwrapName= NULL;
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int allow_severity = LOG_INFO;
int deny_severity = LOG_WARNING;
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#endif
#ifdef HAVE_QUERY_CACHE
ulong query_cache_min_res_unit= QUERY_CACHE_MIN_RESULT_DATA_SIZE;
Query_cache query_cache;
#endif
#ifdef HAVE_SMEM
char *shared_memory_base_name= default_shared_memory_base_name;
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my_bool opt_enable_shared_memory;
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HANDLE smem_event_connect_request= 0;
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#endif

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my_bool opt_use_ssl  = 0;
char *opt_ssl_ca= NULL, *opt_ssl_capath= NULL, *opt_ssl_cert= NULL,
     *opt_ssl_cipher= NULL, *opt_ssl_key= NULL;

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#ifdef HAVE_OPENSSL
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#include <openssl/crypto.h>
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#ifndef HAVE_YASSL
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typedef struct CRYPTO_dynlock_value
{
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  mysql_rwlock_t lock;
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} openssl_lock_t;

static openssl_lock_t *openssl_stdlocks;
static openssl_lock_t *openssl_dynlock_create(const char *, int);
static void openssl_dynlock_destroy(openssl_lock_t *, const char *, int);
static void openssl_lock_function(int, int, const char *, int);
static void openssl_lock(int, openssl_lock_t *, const char *, int);
static unsigned long openssl_id_function();
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#endif
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char *des_key_file;
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#ifndef EMBEDDED_LIBRARY
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struct st_VioSSLFd *ssl_acceptor_fd;
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#endif
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#endif /* HAVE_OPENSSL */

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/**
  Number of currently active user connections. The variable is protected by
  LOCK_connection_count.
*/
uint connection_count= 0;
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/* Function declarations */

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pthread_handler_t signal_hand(void *arg);
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static int mysql_init_variables(void);
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static int get_options(int *argc_ptr, char ***argv_ptr);
static bool add_terminator(DYNAMIC_ARRAY *options);
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extern "C" my_bool mysqld_get_one_option(int, const struct my_option *, char *);
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static void set_server_version(void);
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static int init_thread_environment();
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static char *get_relative_path(const char *path);
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static int fix_paths(void);
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void handle_connections_sockets();
#ifdef _WIN32
pthread_handler_t handle_connections_sockets_thread(void *arg);
#endif
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pthread_handler_t kill_server_thread(void *arg);
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static void bootstrap(MYSQL_FILE *file);
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static bool read_init_file(char *file_name);
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#ifdef _WIN32
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pthread_handler_t handle_connections_namedpipes(void *arg);
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#endif
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#ifdef HAVE_SMEM
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pthread_handler_t handle_connections_shared_memory(void *arg);
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#endif
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pthread_handler_t handle_slave(void *arg);
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static void clean_up(bool print_message);
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static int test_if_case_insensitive(const char *dir_name);

#ifndef EMBEDDED_LIBRARY
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static void usage(void);
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static void start_signal_handler(void);
static void close_server_sock();
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static void clean_up_mutexes(void);
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static void wait_for_signal_thread_to_end(void);
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static void create_pid_file();
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static void mysqld_exit(int exit_code) __attribute__((noreturn));
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#endif
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static void end_ssl();
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#ifndef EMBEDDED_LIBRARY
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/****************************************************************************
** Code to end mysqld
****************************************************************************/

static void close_connections(void)
{
#ifdef EXTRA_DEBUG
  int count=0;
#endif
  DBUG_ENTER("close_connections");

  /* Clear thread cache */
  kill_cached_threads++;
  flush_thread_cache();

  /* kill connection thread */
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#if !defined(__WIN__)
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  DBUG_PRINT("quit", ("waiting for select thread: 0x%lx",
                      (ulong) select_thread));
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  mysql_mutex_lock(&LOCK_thread_count);
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  while (select_thread_in_use)
  {
    struct timespec abstime;
    int error;
    LINT_INIT(error);
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996
    DBUG_PRINT("info",("Waiting for select thread"));
997

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#ifndef DONT_USE_THR_ALARM
999
    if (pthread_kill(select_thread, thr_client_alarm))
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      break;					// allready dead
#endif
1002
    set_timespec(abstime, 2);
1003
    for (uint tmp=0 ; tmp < 10 && select_thread_in_use; tmp++)
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    {
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1005 1006
      error= mysql_cond_timedwait(&COND_thread_count, &LOCK_thread_count,
                                  &abstime);
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      if (error != EINTR)
	break;
    }
#ifdef EXTRA_DEBUG
    if (error != 0 && !count++)
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      sql_print_error("Got error %d from mysql_cond_timedwait", error);
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#endif
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    close_server_sock();
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  }
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  mysql_mutex_unlock(&LOCK_thread_count);
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#endif /* __WIN__ */


  /* Abort listening to new connections */
  DBUG_PRINT("quit",("Closing sockets"));
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1022
  if (!opt_disable_networking )
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1023 1024 1025
  {
    if (ip_sock != INVALID_SOCKET)
    {
1026
      (void) shutdown(ip_sock, SHUT_RDWR);
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      (void) closesocket(ip_sock);
      ip_sock= INVALID_SOCKET;
    }
  }
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#ifdef _WIN32
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  if (hPipe != INVALID_HANDLE_VALUE && opt_enable_named_pipe)
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  {
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    HANDLE temp;
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    DBUG_PRINT("quit", ("Closing named pipes") );
1036

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    /* Create connection to the handle named pipe handler to break the loop */
1038
    if ((temp = CreateFile(pipe_name,
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			   GENERIC_READ | GENERIC_WRITE,
			   0,
			   NULL,
			   OPEN_EXISTING,
			   0,
			   NULL )) != INVALID_HANDLE_VALUE)
    {
1046
      WaitNamedPipe(pipe_name, 1000);
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1047 1048 1049 1050 1051 1052
      DWORD dwMode = PIPE_READMODE_BYTE | PIPE_WAIT;
      SetNamedPipeHandleState(temp, &dwMode, NULL, NULL);
      CancelIo(temp);
      DisconnectNamedPipe(temp);
      CloseHandle(temp);
    }
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  }
#endif
#ifdef HAVE_SYS_UN_H
  if (unix_sock != INVALID_SOCKET)
  {
1058
    (void) shutdown(unix_sock, SHUT_RDWR);
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    (void) closesocket(unix_sock);
1060
    (void) unlink(mysqld_unix_port);
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    unix_sock= INVALID_SOCKET;
  }
#endif
1064
  end_thr_alarm(0);			 // Abort old alarms.
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1066 1067 1068 1069 1070
  /*
    First signal all threads that it's time to die
    This will give the threads some time to gracefully abort their
    statements and inform their clients that the server is about to die.
  */
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1071 1072

  THD *tmp;
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1073
  mysql_mutex_lock(&LOCK_thread_count); // For unlink from list
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  I_List_iterator<THD> it(threads);
  while ((tmp=it++))
  {
    DBUG_PRINT("quit",("Informing thread %ld that it's time to die",
		       tmp->thread_id));
1080
    /* We skip slave threads & scheduler on this first loop through. */
1081
    if (tmp->slave_thread)
1082
      continue;
1083

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1084
    tmp->killed= THD::KILL_CONNECTION;
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    MYSQL_CALLBACK(thread_scheduler, post_kill_notification, (tmp));
    mysql_mutex_lock(&tmp->LOCK_thd_data);
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    if (tmp->mysys_var)
    {
      tmp->mysys_var->abort=1;
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      mysql_mutex_lock(&tmp->mysys_var->mutex);
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1091
      if (tmp->mysys_var->current_cond)
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      {
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        mysql_mutex_lock(tmp->mysys_var->current_mutex);
        mysql_cond_broadcast(tmp->mysys_var->current_cond);
        mysql_mutex_unlock(tmp->mysys_var->current_mutex);
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      }
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      mysql_mutex_unlock(&tmp->mysys_var->mutex);
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    }
1099
    mysql_mutex_unlock(&tmp->LOCK_thd_data);
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  }
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  mysql_mutex_unlock(&LOCK_thread_count); // For unlink from list
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1103
  Events::deinit();
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  end_slave();

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  if (thread_count)
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    sleep(2);					// Give threads time to die
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  /*
    Force remaining threads to die by closing the connection to the client
    This will ensure that threads that are waiting for a command from the
    client on a blocking read call are aborted.
  */
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1114 1115 1116 1117

  for (;;)
  {
    DBUG_PRINT("quit",("Locking LOCK_thread_count"));
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Marc Alff committed
1118
    mysql_mutex_lock(&LOCK_thread_count); // For unlink from list
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    if (!(tmp=threads.get()))
    {
      DBUG_PRINT("quit",("Unlocking LOCK_thread_count"));
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1122
      mysql_mutex_unlock(&LOCK_thread_count);
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      break;
    }
#ifndef __bsdi__				// Bug in BSDI kernel
1126
    if (tmp->vio_ok())
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    {
1128
      if (global_system_variables.log_warnings)
1129
        sql_print_warning(ER_DEFAULT(ER_FORCING_CLOSE),my_progname,
1130
                          tmp->thread_id,
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                          (tmp->main_security_ctx.user ?
                           tmp->main_security_ctx.user : ""));
1133
      close_connection(tmp,0,0);
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    }
#endif
    DBUG_PRINT("quit",("Unlocking LOCK_thread_count"));
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    mysql_mutex_unlock(&LOCK_thread_count);
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1138 1139 1140
  }
  /* All threads has now been aborted */
  DBUG_PRINT("quit",("Waiting for threads to die (count=%u)",thread_count));
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1141
  mysql_mutex_lock(&LOCK_thread_count);
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1142 1143
  while (thread_count)
  {
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1144
    mysql_cond_wait(&COND_thread_count, &LOCK_thread_count);
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1145 1146
    DBUG_PRINT("quit",("One thread died (count=%u)",thread_count));
  }
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1147
  mysql_mutex_unlock(&LOCK_thread_count);
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1148

1149
  close_active_mi();
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  DBUG_PRINT("quit",("close_connections thread"));
  DBUG_VOID_RETURN;
}

1154

1155
static void close_server_sock()
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1156
{
1157
#ifdef HAVE_CLOSE_SERVER_SOCK
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  DBUG_ENTER("close_server_sock");
1159 1160 1161
  my_socket tmp_sock;
  tmp_sock=ip_sock;
  if (tmp_sock != INVALID_SOCKET)
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1162 1163
  {
    ip_sock=INVALID_SOCKET;
1164
    DBUG_PRINT("info",("calling shutdown on TCP/IP socket"));
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1165
    (void) shutdown(tmp_sock, SHUT_RDWR);
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  }
1167 1168
  tmp_sock=unix_sock;
  if (tmp_sock != INVALID_SOCKET)
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1169
  {
1170
    unix_sock=INVALID_SOCKET;
1171
    DBUG_PRINT("info",("calling shutdown on unix socket"));
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1172 1173
    (void) shutdown(tmp_sock, SHUT_RDWR);
    (void) unlink(mysqld_unix_port);
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  }
  DBUG_VOID_RETURN;
#endif
1177
}
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1179 1180
#endif /*EMBEDDED_LIBRARY*/

1181

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1182 1183 1184 1185
void kill_mysql(void)
{
  DBUG_ENTER("kill_mysql");

1186
#if defined(SIGNALS_DONT_BREAK_READ) && !defined(EMBEDDED_LIBRARY)
1187 1188
  abort_loop=1;					// Break connection loops
  close_server_sock();				// Force accept to wake up
1189
#endif
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1190

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1191
#if defined(__WIN__)
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#if !defined(EMBEDDED_LIBRARY)
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  {
    if (!SetEvent(hEventShutdown))
    {
      DBUG_PRINT("error",("Got error: %ld from SetEvent",GetLastError()));
    }
1198 1199 1200 1201 1202 1203
    /*
      or:
      HANDLE hEvent=OpenEvent(0, FALSE, "MySqlShutdown");
      SetEvent(hEventShutdown);
      CloseHandle(hEvent);
    */
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1204
  }
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#endif
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1206
#elif defined(HAVE_PTHREAD_KILL)
1207
  if (pthread_kill(signal_thread, MYSQL_KILL_SIGNAL))
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  {
    DBUG_PRINT("error",("Got error %d from pthread_kill",errno)); /* purecov: inspected */
  }
#elif !defined(SIGNALS_DONT_BREAK_READ)
1212
  kill(current_pid, MYSQL_KILL_SIGNAL);
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#endif
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  DBUG_PRINT("quit",("After pthread_kill"));
  shutdown_in_progress=1;			// Safety if kill didn't work
#ifdef SIGNALS_DONT_BREAK_READ
1217
  if (!kill_in_progress)
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  {
    pthread_t tmp;
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    abort_loop=1;
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Marc Alff committed
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    if (mysql_thread_create(0, /* Not instrumented */
                            &tmp, &connection_attrib, kill_server_thread,
                            (void*) 0))
1224
      sql_print_error("Can't create thread to kill server");
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1225
  }
1226
#endif
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1227
  DBUG_VOID_RETURN;
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}

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/**
  Force server down. Kill all connections and threads and exit.
1232

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  @param  sig_ptr       Signal number that caused kill_server to be called.
1234

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  @note
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    A signal number of 0 mean that the function was not called
    from a signal handler and there is thus no signal to block
    or stop, we just want to kill the server.
*/
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1240

1241
#if !defined(__WIN__)
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static void *kill_server(void *sig_ptr)
1243
#define RETURN_FROM_KILL_SERVER return 0
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#else
static void __cdecl kill_server(int sig_ptr)
1246
#define RETURN_FROM_KILL_SERVER return
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#endif
{
  DBUG_ENTER("kill_server");
1250
#ifndef EMBEDDED_LIBRARY
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1251
  int sig=(int) (long) sig_ptr;			// This is passed a int
1252
  // if there is a signal during the kill in progress, ignore the other
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1253
  if (kill_in_progress)				// Safety
1254 1255
  {
    DBUG_LEAVE;
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    RETURN_FROM_KILL_SERVER;
1257
  }
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  kill_in_progress=TRUE;
  abort_loop=1;					// This should be set
1260
  if (sig != 0) // 0 is not a valid signal number
1261
    my_sigset(sig, SIG_IGN);                    /* purify inspected */
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  if (sig == MYSQL_KILL_SIGNAL || sig == 0)
1263
    sql_print_information(ER_DEFAULT(ER_NORMAL_SHUTDOWN),my_progname);
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  else
1265
    sql_print_error(ER_DEFAULT(ER_GOT_SIGNAL),my_progname,sig); /* purecov: inspected */
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#if defined(HAVE_SMEM) && defined(__WIN__)    
  /*    
   Send event to smem_event_connect_request for aborting    
   */    
  if (!SetEvent(smem_event_connect_request))    
  {      
	  DBUG_PRINT("error",
		("Got error: %ld from SetEvent of smem_event_connect_request",
		 GetLastError()));    
  }
#endif  
  
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  close_connections();
1280 1281
  if (sig != MYSQL_KILL_SIGNAL &&
      sig != 0)
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    unireg_abort(1);				/* purecov: inspected */
  else
1284
    unireg_end();
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Merge  
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1285

1286
  /* purecov: begin deadcode */
1287
  DBUG_LEAVE;                                   // Must match DBUG_ENTER()
1288
  my_thread_end();
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  pthread_exit(0);
  /* purecov: end */
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1292 1293 1294 1295 1296
  RETURN_FROM_KILL_SERVER;                      // Avoid compiler warnings

#else /* EMBEDDED_LIBRARY*/

  DBUG_LEAVE;
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  RETURN_FROM_KILL_SERVER;
1298 1299

#endif /* EMBEDDED_LIBRARY */
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}


1303
#if defined(USE_ONE_SIGNAL_HAND)
1304
pthread_handler_t kill_server_thread(void *arg __attribute__((unused)))
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{
  my_thread_init();				// Initialize new thread
  kill_server(0);
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  /* purecov: begin deadcode */
  my_thread_end();
  pthread_exit(0);
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  return 0;
1312
  /* purecov: end */
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}
#endif

1316

1317
extern "C" sig_handler print_signal_warning(int sig)
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{
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  if (global_system_variables.log_warnings)
1320
    sql_print_warning("Got signal %d from thread %ld", sig,my_thread_id());
1321
#ifdef SIGNAL_HANDLER_RESET_ON_DELIVERY
1322
  my_sigset(sig,print_signal_warning);		/* int. thread system calls */
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#endif
1324
#if !defined(__WIN__)
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  if (sig == SIGALRM)
    alarm(2);					/* reschedule alarm */
#endif
}

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#ifndef EMBEDDED_LIBRARY
1331

1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343
static void init_error_log_mutex()
{
  mysql_mutex_init(key_LOCK_error_log, &LOCK_error_log, MY_MUTEX_INIT_FAST);
}


static void clean_up_error_log_mutex()
{
  mysql_mutex_destroy(&LOCK_error_log);
}


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/**
  cleanup all memory and end program nicely.
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1347 1348 1349
    If SIGNALS_DONT_BREAK_READ is defined, this function is called
    by the main thread. To get MySQL to shut down nicely in this case
    (Mac OS X) we have to call exit() instead if pthread_exit().
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  @note
    This function never returns.
*/
1354
void unireg_end(void)
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1355
{
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  clean_up(1);
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  my_thread_end();
1358
#if defined(SIGNALS_DONT_BREAK_READ)
1359 1360
  exit(0);
#else
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  pthread_exit(0);				// Exit is in main thread
1362
#endif
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}

1365

1366
extern "C" void unireg_abort(int exit_code)
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{
1368
  DBUG_ENTER("unireg_abort");
1369

1370 1371
  if (opt_help)
    usage();
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1372 1373
  if (exit_code)
    sql_print_error("Aborting\n");
1374
  clean_up(!opt_help && (exit_code || !opt_bootstrap)); /* purecov: inspected */
1375
  DBUG_PRINT("quit",("done with cleanup in unireg_abort"));
1376 1377 1378 1379 1380
  mysqld_exit(exit_code);
}

static void mysqld_exit(int exit_code)
{
1381 1382 1383 1384 1385
  /*
    Important note: we wait for the signal thread to end,
    but if a kill -15 signal was sent, the signal thread did
    spawn the kill_server_thread thread, which is running concurrently.
  */
1386
  wait_for_signal_thread_to_end();
1387
  mysql_audit_finalize();
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1388
  clean_up_mutexes();
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Marc Alff committed
1389
  clean_up_error_log_mutex();
1390 1391 1392 1393 1394 1395
#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
  /*
    Bug#56666 needs to be fixed before calling:
    shutdown_performance_schema();
  */
#endif
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  my_end(opt_endinfo ? MY_CHECK_ERROR | MY_GIVE_INFO : 0);
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  exit(exit_code); /* purecov: inspected */
}
1399

1400
#endif /* !EMBEDDED_LIBRARY */
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1402
void clean_up(bool print_message)
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{
  DBUG_PRINT("exit",("clean_up"));
  if (cleanup_done++)
    return; /* purecov: inspected */
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1408
  stop_handle_manager();
1409 1410
  release_ddl_log();

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  /*
    make sure that handlers finish up
    what they have that is dependent on the binlog
  */
  ha_binlog_end(current_thd);
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  logger.cleanup_base();

1419
  injector::free_instance();
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  mysql_bin_log.cleanup();

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1422
#ifdef HAVE_REPLICATION
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  if (use_slave_mask)
    bitmap_free(&slave_error_mask);
1425
#endif
1426
  my_tz_free();
1427
  my_dboptions_cache_free();
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#ifndef NO_EMBEDDED_ACCESS_CHECKS
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  servers_free(1);
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  acl_free(1);
  grant_free();
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#endif
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  query_cache_destroy();
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  hostname_cache_free();
  item_user_lock_free();
  lex_free();				/* Free some memory */
1437
  item_create_cleanup();
1438
  free_charsets();
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1439
  if (!opt_noacl)
1440
  {
1441
#ifdef HAVE_DLOPEN
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1442
    udf_free();
1443
#endif
1444
  }
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  table_def_start_shutdown();
1446
  plugin_shutdown();
1447
  ha_end();
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  if (tc_log)
    tc_log->close();
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  delegates_destroy();
1451
  xid_cache_free();
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1452 1453
  table_def_free();
  mdl_destroy();
1454
  key_caches.delete_elements((void (*)(const char*, uchar*)) free_key_cache);
1455
  multi_keycache_free();
1456
  free_status_vars();
1457
  end_thr_alarm(1);			/* Free allocated memory */
1458
  my_free_open_file_info();
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  if (defaults_argv)
    free_defaults(defaults_argv);
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  free_tmpdir(&mysql_tmpdir_list);
1462
  my_free(opt_bin_logname);
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  bitmap_free(&temp_pool);
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  free_max_user_conn();
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#ifdef HAVE_REPLICATION
1466
  end_slave_list();
1467
#endif
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  delete binlog_filter;
  delete rpl_filter;
1470
  end_ssl();
1471
  vio_end();
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  my_regex_end();
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#if defined(ENABLED_DEBUG_SYNC)
  /* End the debug sync facility. See debug_sync.cc. */
  debug_sync_end();
#endif /* defined(ENABLED_DEBUG_SYNC) */
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1478
#if !defined(EMBEDDED_LIBRARY)
1479
  if (!opt_bootstrap)
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    mysql_file_delete(key_file_pid, pidfile_name, MYF(0)); // This may not always exist
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1481
#endif
1482
  if (print_message && my_default_lc_messages && server_start_time)
1483 1484
    sql_print_information(ER_DEFAULT(ER_SHUTDOWN_COMPLETE),my_progname);
  cleanup_errmsgs();
1485
  MYSQL_CALLBACK(thread_scheduler, end, ());
1486
  mysql_client_plugin_deinit();
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1487
  finish_client_errs();
1488
  (void) my_error_unregister(ER_ERROR_FIRST, ER_ERROR_LAST); // finish server errs
1489
  DBUG_PRINT("quit", ("Error messages freed"));
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1490
  /* Tell main we are ready */
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1491
  logger.cleanup_end();
1492
  my_atomic_rwlock_destroy(&global_query_id_lock);
1493
  my_atomic_rwlock_destroy(&thread_running_lock);
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1494
  mysql_mutex_lock(&LOCK_thread_count);
1495
  DBUG_PRINT("quit", ("got thread count lock"));
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  ready_to_exit=1;
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  /* do the broadcast inside the lock to ensure that my_end() is not called */
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  mysql_cond_broadcast(&COND_thread_count);
  mysql_mutex_unlock(&LOCK_thread_count);
1500
  sys_var_end();
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1501

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  /*
    The following lines may never be executed as the main thread may have
    killed us
  */
1506
  DBUG_PRINT("quit", ("done with cleanup"));
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} /* clean_up */


1510 1511
#ifndef EMBEDDED_LIBRARY

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/**
1513
  This is mainly needed when running with purify, but it's still nice to
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  know that all child threads have died when mysqld exits.
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*/
static void wait_for_signal_thread_to_end()
{
  uint i;
  /*
    Wait up to 10 seconds for signal thread to die. We use this mainly to
    avoid getting warnings that my_thread_end has not been called
  */
  for (i= 0 ; i < 100 && signal_thread_in_use; i++)
  {
1525
    if (pthread_kill(signal_thread, MYSQL_KILL_SIGNAL) != ESRCH)
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      break;
    my_sleep(100);				// Give it time to die
  }
}


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static void clean_up_mutexes()
{
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1534
  mysql_rwlock_destroy(&LOCK_grant);
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1535
  mysql_mutex_destroy(&LOCK_thread_count);
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  mysql_mutex_destroy(&LOCK_status);
  mysql_mutex_destroy(&LOCK_delayed_insert);
  mysql_mutex_destroy(&LOCK_delayed_status);
  mysql_mutex_destroy(&LOCK_delayed_create);
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1540 1541 1542 1543
  mysql_mutex_destroy(&LOCK_manager);
  mysql_mutex_destroy(&LOCK_crypt);
  mysql_mutex_destroy(&LOCK_user_conn);
  mysql_mutex_destroy(&LOCK_connection_count);
1544
#ifdef HAVE_OPENSSL
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1545
  mysql_mutex_destroy(&LOCK_des_key_file);
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#ifndef HAVE_YASSL
1547
  for (int i= 0; i < CRYPTO_num_locks(); ++i)
1548
    mysql_rwlock_destroy(&openssl_stdlocks[i].lock);
1549
  OPENSSL_free(openssl_stdlocks);
1550 1551
#endif
#endif
1552
#ifdef HAVE_REPLICATION
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1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563
  mysql_mutex_destroy(&LOCK_rpl_status);
  mysql_cond_destroy(&COND_rpl_status);
#endif
  mysql_mutex_destroy(&LOCK_active_mi);
  mysql_rwlock_destroy(&LOCK_sys_init_connect);
  mysql_rwlock_destroy(&LOCK_sys_init_slave);
  mysql_mutex_destroy(&LOCK_global_system_variables);
  mysql_rwlock_destroy(&LOCK_system_variables_hash);
  mysql_mutex_destroy(&LOCK_uuid_generator);
  mysql_mutex_destroy(&LOCK_prepared_stmt_count);
  mysql_mutex_destroy(&LOCK_error_messages);
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  mysql_cond_destroy(&COND_thread_count);
  mysql_cond_destroy(&COND_thread_cache);
  mysql_cond_destroy(&COND_flush_thread_cache);
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  mysql_cond_destroy(&COND_manager);
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}
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#endif /*EMBEDDED_LIBRARY*/


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/****************************************************************************
** Init IP and UNIX socket
****************************************************************************/

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#ifndef EMBEDDED_LIBRARY
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static void set_ports()
{
  char	*env;
1580
  if (!mysqld_port && !opt_disable_networking)
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  {					// Get port if not from commandline
1582
    mysqld_port= MYSQL_PORT;
1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594

    /*
      if builder specifically requested a default port, use that
      (even if it coincides with our factory default).
      only if they didn't do we check /etc/services (and, failing
      on that, fall back to the factory default of 3306).
      either default can be overridden by the environment variable
      MYSQL_TCP_PORT, which in turn can be overridden with command
      line options.
    */

#if MYSQL_PORT_DEFAULT == 0
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    struct  servent *serv_ptr;
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    if ((serv_ptr= getservbyname("mysql", "tcp")))
      mysqld_port= ntohs((u_short) serv_ptr->s_port); /* purecov: inspected */
1598
#endif
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    if ((env = getenv("MYSQL_TCP_PORT")))
1600
      mysqld_port= (uint) atoi(env);		/* purecov: inspected */
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  }
1602
  if (!mysqld_unix_port)
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  {
#ifdef __WIN__
1605
    mysqld_unix_port= (char*) MYSQL_NAMEDPIPE;
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#else
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    mysqld_unix_port= (char*) MYSQL_UNIX_ADDR;
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#endif
    if ((env = getenv("MYSQL_UNIX_PORT")))
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      mysqld_unix_port= env;			/* purecov: inspected */
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  }
}

/* Change to run as another user if started with --user */

1616
static struct passwd *check_user(const char *user)
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{
1618
#if !defined(__WIN__)
1619
  struct passwd *tmp_user_info;
1620
  uid_t user_id= geteuid();
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1622
  // Don't bother if we aren't superuser
1623
  if (user_id)
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  {
    if (user)
1626
    {
1627 1628 1629 1630
      /* Don't give a warning, if real user is same as given with --user */
      /* purecov: begin tested */
      tmp_user_info= getpwnam(user);
      if ((!tmp_user_info || user_id != tmp_user_info->pw_uid) &&
1631
	  global_system_variables.log_warnings)
1632 1633
        sql_print_warning(
                    "One can only use the --user switch if running as root\n");
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      /* purecov: end */
1635
    }
1636
    return NULL;
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  }
1638
  if (!user)
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  {
    if (!opt_bootstrap)
    {
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      sql_print_error("Fatal error: Please read \"Security\" section of the manual to find out how to run mysqld as root!\n");
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      unireg_abort(1);
    }
1645
    return NULL;
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  }
1647
  /* purecov: begin tested */
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1648
  if (!strcmp(user,"root"))
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1649
    return NULL;                        // Avoid problem with dynamic libraries
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1650

1651
  if (!(tmp_user_info= getpwnam(user)))
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1652
  {
1653
    // Allow a numeric uid to be used
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    const char *pos;
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    for (pos= user; my_isdigit(mysqld_charset,*pos); pos++) ;
    if (*pos)                                   // Not numeric id
1657
      goto err;
1658
    if (!(tmp_user_info= getpwuid(atoi(user))))
1659
      goto err;
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1660
  }
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  return tmp_user_info;
  /* purecov: end */
1663 1664

err:
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1665
  sql_print_error("Fatal error: Can't change to run as user '%s' ;  Please check that the user exists!\n",user);
1666
  unireg_abort(1);
1667 1668 1669 1670 1671 1672 1673 1674 1675

#ifdef PR_SET_DUMPABLE
  if (test_flags & TEST_CORE_ON_SIGNAL)
  {
    /* inform kernel that process is dumpable */
    (void) prctl(PR_SET_DUMPABLE, 1);
  }
#endif

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#endif
  return NULL;
1678 1679
}

1680
static void set_user(const char *user, struct passwd *user_info_arg)
1681
{
1682
  /* purecov: begin tested */
1683
#if !defined(__WIN__)
1684
  DBUG_ASSERT(user_info_arg != 0);
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1685
#ifdef HAVE_INITGROUPS
1686 1687 1688 1689 1690 1691 1692
  /*
    We can get a SIGSEGV when calling initgroups() on some systems when NSS
    is configured to use LDAP and the server is statically linked.  We set
    calling_initgroups as a flag to the SIGSEGV handler that is then used to
    output a specific message to help the user resolve this problem.
  */
  calling_initgroups= TRUE;
1693
  initgroups((char*) user, user_info_arg->pw_gid);
1694
  calling_initgroups= FALSE;
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#endif
1696
  if (setgid(user_info_arg->pw_gid) == -1)
1697 1698 1699
  {
    sql_perror("setgid");
    unireg_abort(1);
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1700
  }
1701
  if (setuid(user_info_arg->pw_uid) == -1)
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  {
    sql_perror("setuid");
    unireg_abort(1);
  }
#endif
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  /* purecov: end */
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}

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1711
static void set_effective_user(struct passwd *user_info_arg)
1712
{
1713
#if !defined(__WIN__)
1714 1715
  DBUG_ASSERT(user_info_arg != 0);
  if (setregid((gid_t)-1, user_info_arg->pw_gid) == -1)
1716
  {
1717
    sql_perror("setregid");
1718
    unireg_abort(1);
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1719
  }
1720
  if (setreuid((uid_t)-1, user_info_arg->pw_uid) == -1)
1721
  {
1722
    sql_perror("setreuid");
1723 1724 1725 1726 1727 1728
    unireg_abort(1);
  }
#endif
}


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/** Change root user if started with @c --chroot . */
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static void set_root(const char *path)
{
1732
#if !defined(__WIN__)
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  if (chroot(path) == -1)
  {
    sql_perror("chroot");
    unireg_abort(1);
  }
1738
  my_setwd("/", MYF(0));
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#endif
}

1742

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static void network_init(void)
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{
#ifdef HAVE_SYS_UN_H
  struct sockaddr_un	UNIXaddr;
#endif
1748
  int	arg;
1749 1750 1751 1752
  int   ret;
  uint  waited;
  uint  this_wait;
  uint  retry;
1753
  char port_buf[NI_MAXSERV];
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1754
  DBUG_ENTER("network_init");
1755
  LINT_INIT(ret);
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1756

1757
  if (MYSQL_CALLBACK_ELSE(thread_scheduler, init, (), 0))
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    unireg_abort(1);			/* purecov: inspected */

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  set_ports();

1762
  if (mysqld_port != 0 && !opt_disable_networking && !opt_bootstrap)
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  {
1764 1765 1766
    struct addrinfo *ai, *a;
    struct addrinfo hints;
    int error;
1767
    DBUG_PRINT("general",("IP Socket is %d",mysqld_port));
1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778

    bzero(&hints, sizeof (hints));
    hints.ai_flags= AI_PASSIVE;
    hints.ai_socktype= SOCK_STREAM;
    hints.ai_family= AF_UNSPEC;

    my_snprintf(port_buf, NI_MAXSERV, "%d", mysqld_port);
    error= getaddrinfo(my_bind_addr_str, port_buf, &hints, &ai);
    if (error != 0)
    {
      DBUG_PRINT("error",("Got error: %d from getaddrinfo()", error));
1779
      sql_perror(ER_DEFAULT(ER_IPSOCK_ERROR));  /* purecov: tested */
1780 1781 1782 1783 1784 1785 1786 1787 1788 1789
      unireg_abort(1);				/* purecov: tested */
    }

    for (a= ai; a != NULL; a= a->ai_next)
    {
      ip_sock= socket(a->ai_family, a->ai_socktype, a->ai_protocol);
      if (ip_sock != INVALID_SOCKET)
        break;
    }

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1790 1791 1792
    if (ip_sock == INVALID_SOCKET)
    {
      DBUG_PRINT("error",("Got error: %d from socket()",socket_errno));
1793
      sql_perror(ER_DEFAULT(ER_IPSOCK_ERROR));  /* purecov: tested */
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      unireg_abort(1);				/* purecov: tested */
    }
1796 1797 1798 1799 1800 1801

#ifndef __WIN__
    /*
      We should not use SO_REUSEADDR on windows as this would enable a
      user to open two mysqld servers with the same TCP/IP port.
    */
1802
    arg= 1;
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    (void) setsockopt(ip_sock,SOL_SOCKET,SO_REUSEADDR,(char*)&arg,sizeof(arg));
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#endif /* __WIN__ */
1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822

#ifdef IPV6_V6ONLY
     /*
       For interoperability with older clients, IPv6 socket should
       listen on both IPv6 and IPv4 wildcard addresses.
       Turn off IPV6_V6ONLY option.

       NOTE: this will work starting from Windows Vista only.
       On Windows XP dual stack is not available, so it will not
       listen on the corresponding IPv4-address.
     */
    if (a->ai_family == AF_INET6)
    {
      arg= 0;
      (void) setsockopt(ip_sock, IPPROTO_IPV6, IPV6_V6ONLY, (char*)&arg,
                sizeof(arg));
    }
#endif
1823 1824 1825 1826 1827 1828 1829 1830 1831 1832
    /*
      Sometimes the port is not released fast enough when stopping and
      restarting the server. This happens quite often with the test suite
      on busy Linux systems. Retry to bind the address at these intervals:
      Sleep intervals: 1, 2, 4,  6,  9, 13, 17, 22, ...
      Retry at second: 1, 3, 7, 13, 22, 35, 52, 74, ...
      Limit the sequence by mysqld_port_timeout (set --port-open-timeout=#).
    */
    for (waited= 0, retry= 1; ; retry++, waited+= this_wait)
    {
1833
      if (((ret= bind(ip_sock, a->ai_addr, a->ai_addrlen)) >= 0 ) ||
1834
          (socket_errno != SOCKET_EADDRINUSE) ||
1835 1836 1837 1838 1839 1840
          (waited >= mysqld_port_timeout))
        break;
      sql_print_information("Retrying bind on TCP/IP port %u", mysqld_port);
      this_wait= retry * retry / 3 + 1;
      sleep(this_wait);
    }
1841
    freeaddrinfo(ai);
1842
    if (ret < 0)
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1843 1844
    {
      DBUG_PRINT("error",("Got error: %d from bind",socket_errno));
1845
      sql_perror("Can't start server: Bind on TCP/IP port");
1846
      sql_print_error("Do you already have another mysqld server running on port: %d ?",mysqld_port);
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1847 1848
      unireg_abort(1);
    }
1849
    if (listen(ip_sock,(int) back_log) < 0)
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1850
    {
1851
      sql_perror("Can't start server: listen() on TCP/IP port");
1852
      sql_print_error("listen() on TCP/IP failed with error %d",
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		      socket_errno);
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      unireg_abort(1);
    }
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1856
  }
1857

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1858
#ifdef _WIN32
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1859
  /* create named pipe */
1860
  if (Service.IsNT() && mysqld_unix_port[0] && !opt_bootstrap &&
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      opt_enable_named_pipe)
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  {
1863
    strxnmov(pipe_name, sizeof(pipe_name)-1, "\\\\.\\pipe\\",
1864
	     mysqld_unix_port, NullS);
1865 1866
    bzero((char*) &saPipeSecurity, sizeof(saPipeSecurity));
    bzero((char*) &sdPipeDescriptor, sizeof(sdPipeDescriptor));
1867
    if (!InitializeSecurityDescriptor(&sdPipeDescriptor,
1868
				      SECURITY_DESCRIPTOR_REVISION))
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1869 1870 1871 1872 1873 1874 1875 1876 1877
    {
      sql_perror("Can't start server : Initialize security descriptor");
      unireg_abort(1);
    }
    if (!SetSecurityDescriptorDacl(&sdPipeDescriptor, TRUE, NULL, FALSE))
    {
      sql_perror("Can't start server : Set security descriptor");
      unireg_abort(1);
    }
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1878
    saPipeSecurity.nLength = sizeof(SECURITY_ATTRIBUTES);
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    saPipeSecurity.lpSecurityDescriptor = &sdPipeDescriptor;
    saPipeSecurity.bInheritHandle = FALSE;
1881
    if ((hPipe= CreateNamedPipe(pipe_name,
1882
				PIPE_ACCESS_DUPLEX|FILE_FLAG_OVERLAPPED,
1883 1884 1885 1886 1887 1888 1889 1890
				PIPE_TYPE_BYTE |
				PIPE_READMODE_BYTE |
				PIPE_WAIT,
				PIPE_UNLIMITED_INSTANCES,
				(int) global_system_variables.net_buffer_length,
				(int) global_system_variables.net_buffer_length,
				NMPWAIT_USE_DEFAULT_WAIT,
				&saPipeSecurity)) == INVALID_HANDLE_VALUE)
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1891 1892 1893 1894 1895 1896 1897
      {
	LPVOID lpMsgBuf;
	int error=GetLastError();
	FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
		      FORMAT_MESSAGE_FROM_SYSTEM,
		      NULL, error, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
		      (LPTSTR) &lpMsgBuf, 0, NULL );
1898
	sql_perror((char *)lpMsgBuf);
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1899
	LocalFree(lpMsgBuf);
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1900 1901 1902 1903 1904
	unireg_abort(1);
      }
  }
#endif

1905
#if defined(HAVE_SYS_UN_H)
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1906 1907 1908
  /*
  ** Create the UNIX socket
  */
1909
  if (mysqld_unix_port[0] && !opt_bootstrap)
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1910
  {
1911
    DBUG_PRINT("general",("UNIX Socket is %s",mysqld_unix_port));
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1912

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1913 1914
    if (strlen(mysqld_unix_port) > (sizeof(UNIXaddr.sun_path) - 1))
    {
1915
      sql_print_error("The socket file path is too long (> %u): %s",
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1916
                      (uint) sizeof(UNIXaddr.sun_path) - 1, mysqld_unix_port);
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1917 1918
      unireg_abort(1);
    }
1919
    if ((unix_sock= socket(AF_UNIX, SOCK_STREAM, 0)) < 0)
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1920 1921 1922 1923 1924 1925
    {
      sql_perror("Can't start server : UNIX Socket "); /* purecov: inspected */
      unireg_abort(1);				/* purecov: inspected */
    }
    bzero((char*) &UNIXaddr, sizeof(UNIXaddr));
    UNIXaddr.sun_family = AF_UNIX;
1926 1927
    strmov(UNIXaddr.sun_path, mysqld_unix_port);
    (void) unlink(mysqld_unix_port);
1928
    arg= 1;
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    (void) setsockopt(unix_sock,SOL_SOCKET,SO_REUSEADDR,(char*)&arg,
		      sizeof(arg));
    umask(0);
1932
    if (bind(unix_sock, reinterpret_cast<struct sockaddr *>(&UNIXaddr),
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	     sizeof(UNIXaddr)) < 0)
    {
      sql_perror("Can't start server : Bind on unix socket"); /* purecov: tested */
1936
      sql_print_error("Do you already have another mysqld server running on socket: %s ?",mysqld_unix_port);
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      unireg_abort(1);					/* purecov: tested */
    }
    umask(((~my_umask) & 0666));
#if defined(S_IFSOCK) && defined(SECURE_SOCKETS)
1941
    (void) chmod(mysqld_unix_port,S_IFSOCK);	/* Fix solaris 2.6 bug */
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1942
#endif
1943
    if (listen(unix_sock,(int) back_log) < 0)
1944
      sql_print_warning("listen() on Unix socket failed with error %d",
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1945
		      socket_errno);
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  }
#endif
  DBUG_PRINT("info",("server started"));
  DBUG_VOID_RETURN;
}

1952
#endif /*!EMBEDDED_LIBRARY*/
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1953

1954

1955
#ifndef EMBEDDED_LIBRARY
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1956 1957
/**
  Close a connection.
1958

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  @param thd		Thread handle
  @param errcode	Error code to print to console
  @param lock	        1 if we have have to lock LOCK_thread_count
1962

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1963
  @note
1964 1965
    For the connection that is doing shutdown, this is called twice
*/
1966
void close_connection(THD *thd, uint errcode, bool lock)
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1967
{
1968
  st_vio *vio;
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1969 1970
  DBUG_ENTER("close_connection");
  DBUG_PRINT("enter",("fd: %s  error: '%s'",
1971 1972
		      thd->net.vio ? vio_description(thd->net.vio) :
		      "(not connected)",
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		      errcode ? ER_DEFAULT(errcode) : ""));
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  if (lock)
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    mysql_mutex_lock(&LOCK_thread_count);
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  thd->killed= THD::KILL_CONNECTION;
  if ((vio= thd->net.vio) != 0)
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  {
    if (errcode)
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      net_send_error(thd, errcode,
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                     ER_DEFAULT(errcode), NULL); /* purecov: inspected */
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    vio_close(vio);			/* vio is freed in delete thd */
  }
  if (lock)
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    mysql_mutex_unlock(&LOCK_thread_count);
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  MYSQL_CONNECTION_DONE((int) errcode, thd->thread_id);
  if (MYSQL_CONNECTION_DONE_ENABLED())
  {
    sleep(0); /* Workaround to avoid tailcall optimisation */
  }
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  DBUG_VOID_RETURN;
}
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#endif /* EMBEDDED_LIBRARY */

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/** Called when a thread is aborted. */
/* ARGSUSED */
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extern "C" sig_handler end_thread_signal(int sig __attribute__((unused)))
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{
  THD *thd=current_thd;
  DBUG_ENTER("end_thread_signal");
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  if (thd && ! thd->bootstrap)
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  {
    statistic_increment(killed_threads, &LOCK_status);
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    MYSQL_CALLBACK(thread_scheduler, end_thread, (thd,0)); /* purecov: inspected */
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  }
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  DBUG_VOID_RETURN;				/* purecov: deadcode */
}


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/*
  Unlink thd from global list of available connections and free thd

  SYNOPSIS
    unlink_thd()
    thd		 Thread handler

  NOTES
    LOCK_thread_count is locked and left locked
*/

void unlink_thd(THD *thd)
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{
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  DBUG_ENTER("unlink_thd");
  DBUG_PRINT("enter", ("thd: 0x%lx", (long) thd));
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  thd->cleanup();
2027

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  mysql_mutex_lock(&LOCK_connection_count);
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  --connection_count;
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  mysql_mutex_unlock(&LOCK_connection_count);
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  mysql_mutex_lock(&LOCK_thread_count);
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  thread_count--;
  delete thd;
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  DBUG_VOID_RETURN;
}

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/*
  Store thread in cache for reuse by new connections

  SYNOPSIS
    cache_thread()

  NOTES
    LOCK_thread_count has to be locked

  RETURN
    0  Thread was not put in cache
    1  Thread is to be reused by new connection.
       (ie, caller should return, not abort with pthread_exit())
*/


static bool cache_thread()
{
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  mysql_mutex_assert_owner(&LOCK_thread_count);
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  if (cached_thread_count < thread_cache_size &&
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      ! abort_loop && !kill_cached_threads)
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  {
    /* Don't kill the thread, just put it in cache for reuse */
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    DBUG_PRINT("info", ("Adding thread to cache"));
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    cached_thread_count++;
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#ifdef HAVE_PSI_INTERFACE
    /*
      Delete the instrumentation for the job that just completed,
      before parking this pthread in the cache (blocked on COND_thread_cache).
    */
    if (likely(PSI_server != NULL))
      PSI_server->delete_current_thread();
#endif

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    while (!abort_loop && ! wake_thread && ! kill_cached_threads)
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      mysql_cond_wait(&COND_thread_cache, &LOCK_thread_count);
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    cached_thread_count--;
    if (kill_cached_threads)
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      mysql_cond_signal(&COND_flush_thread_cache);
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    if (wake_thread)
    {
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      THD *thd;
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      wake_thread--;
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      thd= thread_cache.get();
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      thd->thread_stack= (char*) &thd;          // For store_globals
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      (void) thd->store_globals();
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#ifdef HAVE_PSI_INTERFACE
      /*
        Create new instrumentation for the new THD job,
        and attach it to this running pthread.
      */
      if (likely(PSI_server != NULL))
      {
        PSI_thread *psi= PSI_server->new_thread(key_thread_one_connection,
                                                thd, thd->thread_id);
        if (likely(psi != NULL))
          PSI_server->set_thread(psi);
      }
#endif

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      /*
        THD::mysys_var::abort is associated with physical thread rather
        than with THD object. So we need to reset this flag before using
        this thread for handling of new THD object/connection.
      */
      thd->mysys_var->abort= 0;
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      thd->thr_create_utime= my_micro_time();
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      threads.append(thd);
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      return(1);
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    }
  }
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  return(0);
}


/*
  End thread for the current connection

  SYNOPSIS
    one_thread_per_connection_end()
    thd		  Thread handler
    put_in_cache  Store thread in cache, if there is room in it
                  Normally this is true in all cases except when we got
                  out of resources initializing the current thread

  NOTES
    If thread is cached, we will wait until thread is scheduled to be
    reused and then we will return.
    If thread is not cached, we end the thread.

  RETURN
    0    Signal to handle_one_connection to reuse connection
*/

bool one_thread_per_connection_end(THD *thd, bool put_in_cache)
{
  DBUG_ENTER("one_thread_per_connection_end");
  unlink_thd(thd);
  if (put_in_cache)
    put_in_cache= cache_thread();
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  mysql_mutex_unlock(&LOCK_thread_count);
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  if (put_in_cache)
    DBUG_RETURN(0);                             // Thread is reused
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  /* It's safe to broadcast outside a lock (COND... is not deleted here) */
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  DBUG_PRINT("signal", ("Broadcasting COND_thread_count"));
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  DBUG_LEAVE;                                   // Must match DBUG_ENTER()
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  my_thread_end();
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  mysql_cond_broadcast(&COND_thread_count);
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  pthread_exit(0);
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  return 0;                                     // Avoid compiler warnings
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}


void flush_thread_cache()
{
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  mysql_mutex_lock(&LOCK_thread_count);
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  kill_cached_threads++;
  while (cached_thread_count)
  {
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    mysql_cond_broadcast(&COND_thread_cache);
    mysql_cond_wait(&COND_flush_thread_cache, &LOCK_thread_count);
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  }
  kill_cached_threads--;
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  mysql_mutex_unlock(&LOCK_thread_count);
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}


#ifdef THREAD_SPECIFIC_SIGPIPE
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/**
  Aborts a thread nicely. Comes here on SIGPIPE.

  @todo
    One should have to fix that thr_alarm know about this thread too.
*/
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extern "C" sig_handler abort_thread(int sig __attribute__((unused)))
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{
  THD *thd=current_thd;
  DBUG_ENTER("abort_thread");
  if (thd)
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    thd->killed= THD::KILL_CONNECTION;
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  DBUG_VOID_RETURN;
}
#endif

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/******************************************************************************
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  Setup a signal thread with handles all signals.
  Because Linux doesn't support schemas use a mutex to check that
  the signal thread is ready before continuing
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******************************************************************************/

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#if defined(__WIN__)
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/*
  On Windows, we use native SetConsoleCtrlHandler for handle events like Ctrl-C
  with graceful shutdown.
  Also, we do not use signal(), but SetUnhandledExceptionFilter instead - as it
  provides possibility to pass the exception to just-in-time debugger, collect
  dumps and potentially also the exception and thread context used to output
  callstack.
*/

static BOOL WINAPI console_event_handler( DWORD type ) 
{
  DBUG_ENTER("console_event_handler");
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#ifndef EMBEDDED_LIBRARY
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  if(type == CTRL_C_EVENT)
  {
     /*
       Do not shutdown before startup is finished and shutdown
       thread is initialized. Otherwise there is a race condition 
       between main thread doing initialization and CTRL-C thread doing
       cleanup, which can result into crash.
     */
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#ifndef EMBEDDED_LIBRARY
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     if(hEventShutdown)
       kill_mysql();
     else
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#endif
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       sql_print_warning("CTRL-C ignored during startup");
     DBUG_RETURN(TRUE);
  }
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#endif
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  DBUG_RETURN(FALSE);
}




#ifdef DEBUG_UNHANDLED_EXCEPTION_FILTER
#define DEBUGGER_ATTACH_TIMEOUT 120
/*
  Wait for debugger to attach and break into debugger. If debugger is not attached,
  resume after timeout.
*/
static void wait_for_debugger(int timeout_sec)
{
   if(!IsDebuggerPresent())
   {
     int i;
     printf("Waiting for debugger to attach, pid=%u\n",GetCurrentProcessId());
     fflush(stdout);
     for(i= 0; i < timeout_sec; i++)
     {
       Sleep(1000);
       if(IsDebuggerPresent())
       {
         /* Break into debugger */
         __debugbreak();
         return;
       }
     }
     printf("pid=%u, debugger not attached after %d seconds, resuming\n",GetCurrentProcessId(),
       timeout_sec);
     fflush(stdout);
   }
}
#endif /* DEBUG_UNHANDLED_EXCEPTION_FILTER */

LONG WINAPI my_unhandler_exception_filter(EXCEPTION_POINTERS *ex_pointers)
{
   static BOOL first_time= TRUE;
   if(!first_time)
   {
     /*
       This routine can be called twice, typically
       when detaching in JIT debugger.
       Return EXCEPTION_EXECUTE_HANDLER to terminate process.
     */
     return EXCEPTION_EXECUTE_HANDLER;
   }
   first_time= FALSE;
#ifdef DEBUG_UNHANDLED_EXCEPTION_FILTER
   /*
    Unfortunately there is no clean way to debug unhandled exception filters,
    as debugger does not stop there(also documented in MSDN) 
    To overcome, one could put a MessageBox, but this will not work in service.
    Better solution is to print error message and sleep some minutes 
    until debugger is attached
  */
  wait_for_debugger(DEBUGGER_ATTACH_TIMEOUT);
#endif /* DEBUG_UNHANDLED_EXCEPTION_FILTER */
  __try
  {
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    my_set_exception_pointers(ex_pointers);
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    handle_segfault(ex_pointers->ExceptionRecord->ExceptionCode);
  }
  __except(EXCEPTION_EXECUTE_HANDLER)
  {
    DWORD written;
    const char msg[] = "Got exception in exception handler!\n";
    WriteFile(GetStdHandle(STD_OUTPUT_HANDLE),msg, sizeof(msg)-1, 
      &written,NULL);
  }
  /*
    Return EXCEPTION_CONTINUE_SEARCH to give JIT debugger
    (drwtsn32 or vsjitdebugger) possibility to attach,
    if JIT debugger is configured.
    Windows Error reporting might generate a dump here.
  */
  return EXCEPTION_CONTINUE_SEARCH;
}


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static void init_signals(void)
{
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  if(opt_console)
    SetConsoleCtrlHandler(console_event_handler,TRUE);
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    /* Avoid MessageBox()es*/
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  _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE);
  _CrtSetReportFile(_CRT_WARN, _CRTDBG_FILE_STDERR);
  _CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_FILE);
  _CrtSetReportFile(_CRT_ERROR, _CRTDBG_FILE_STDERR);
  _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_FILE);
  _CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);
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   /*
     Do not use SEM_NOGPFAULTERRORBOX in the following SetErrorMode (),
     because it would prevent JIT debugger and Windows error reporting
     from working. We need WER or JIT-debugging, since our own unhandled
     exception filter is not guaranteed to work in all situation
     (like heap corruption or stack overflow)
   */
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  SetErrorMode(SetErrorMode(0) | SEM_FAILCRITICALERRORS
                               | SEM_NOOPENFILEERRORBOX);
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  SetUnhandledExceptionFilter(my_unhandler_exception_filter);
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}

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static void start_signal_handler(void)
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{
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#ifndef EMBEDDED_LIBRARY
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  // Save vm id of this process
  if (!opt_bootstrap)
    create_pid_file();
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#endif /* EMBEDDED_LIBRARY */
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}
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static void check_data_home(const char *path)
{}
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#endif /* __WIN__ */
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#ifdef HAVE_LINUXTHREADS
#define UNSAFE_DEFAULT_LINUX_THREADS 200
2351
#endif
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#if BACKTRACE_DEMANGLE
#include <cxxabi.h>
extern "C" char *my_demangle(const char *mangled_name, int *status)
{
  return abi::__cxa_demangle(mangled_name, NULL, NULL, status);
}
#endif


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extern "C" sig_handler handle_segfault(int sig)
2364
{
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  time_t curr_time;
  struct tm tm;

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  /*
    Strictly speaking, one needs a mutex here
    but since we have got SIGSEGV already, things are a mess
    so not having the mutex is not as bad as possibly using a buggy
    mutex - so we keep things simple
  */
2374
  if (segfaulted)
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  {
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    fprintf(stderr, "Fatal " SIGNAL_FMT " while backtracing\n", sig);
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    exit(1);
  }
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  segfaulted = 1;
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  curr_time= my_time(0);
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  localtime_r(&curr_time, &tm);

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  fprintf(stderr,"\
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%02d%02d%02d %2d:%02d:%02d - mysqld got " SIGNAL_FMT " ;\n\
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This could be because you hit a bug. It is also possible that this binary\n\
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or one of the libraries it was linked against is corrupt, improperly built,\n\
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or misconfigured. This error can also be caused by malfunctioning hardware.\n",
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          tm.tm_year % 100, tm.tm_mon+1, tm.tm_mday,
          tm.tm_hour, tm.tm_min, tm.tm_sec,
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	  sig);
  fprintf(stderr, "\
We will try our best to scrape up some info that will hopefully help diagnose\n\
the problem, but since we have already crashed, something is definitely wrong\n\
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and this may fail.\n\n");
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  fprintf(stderr, "key_buffer_size=%lu\n",
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          (ulong) dflt_key_cache->key_cache_mem_size);
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  fprintf(stderr, "read_buffer_size=%ld\n", (long) global_system_variables.read_buff_size);
  fprintf(stderr, "max_used_connections=%lu\n", max_used_connections);
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  fprintf(stderr, "max_threads=%u\n", thread_scheduler->max_threads);
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  fprintf(stderr, "thread_count=%u\n", thread_count);
  fprintf(stderr, "connection_count=%u\n", connection_count);
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  fprintf(stderr, "It is possible that mysqld could use up to \n\
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key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = %lu K\n\
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bytes of memory\n", ((ulong) dflt_key_cache->key_cache_mem_size +
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		     (global_system_variables.read_buff_size +
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		      global_system_variables.sortbuff_size) *
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		     thread_scheduler->max_threads +
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                     max_connections * sizeof(THD)) / 1024);
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  fprintf(stderr, "Hope that's ok; if not, decrease some variables in the equation.\n\n");
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#if defined(HAVE_LINUXTHREADS)
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  if (sizeof(char*) == 4 && thread_count > UNSAFE_DEFAULT_LINUX_THREADS)
  {
    fprintf(stderr, "\
You seem to be running 32-bit Linux and have %d concurrent connections.\n\
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If you have not changed STACK_SIZE in LinuxThreads and built the binary \n\
yourself, LinuxThreads is quite likely to steal a part of the global heap for\n\
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the thread stack. Please read http://dev.mysql.com/doc/mysql/en/linux.html\n\n",
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	    thread_count);
  }
#endif /* HAVE_LINUXTHREADS */
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#ifdef HAVE_STACKTRACE
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  THD *thd=current_thd;

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  if (!(test_flags & TEST_NO_STACKTRACE))
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  {
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    fprintf(stderr, "thd: 0x%lx\n",(long) thd);
    fprintf(stderr, "Attempting backtrace. You can use the following "
                    "information to find out\nwhere mysqld died. If "
                    "you see no messages after this, something went\n"
                    "terribly wrong...\n");
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    my_print_stacktrace(thd ? (uchar*) thd->thread_stack : NULL,
                        my_thread_stack_size);
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  }
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  if (thd)
  {
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    const char *kreason= "UNKNOWN";
    switch (thd->killed) {
    case THD::NOT_KILLED:
      kreason= "NOT_KILLED";
      break;
    case THD::KILL_BAD_DATA:
      kreason= "KILL_BAD_DATA";
      break;
    case THD::KILL_CONNECTION:
      kreason= "KILL_CONNECTION";
      break;
    case THD::KILL_QUERY:
      kreason= "KILL_QUERY";
      break;
    case THD::KILLED_NO_VALUE:
      kreason= "KILLED_NO_VALUE";
      break;
    }
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    fprintf(stderr, "Trying to get some variables.\n\
Some pointers may be invalid and cause the dump to abort...\n");
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    my_safe_print_str("thd->query", thd->query(), 1024);
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    fprintf(stderr, "thd->thread_id=%lu\n", (ulong) thd->thread_id);
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    fprintf(stderr, "thd->killed=%s\n", kreason);
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  }
  fprintf(stderr, "\
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The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains\n\
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information that should help you find out what is causing the crash.\n");
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  fflush(stderr);
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#endif /* HAVE_STACKTRACE */

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#ifdef HAVE_INITGROUPS
  if (calling_initgroups)
    fprintf(stderr, "\n\
This crash occured while the server was calling initgroups(). This is\n\
often due to the use of a mysqld that is statically linked against glibc\n\
and configured to use LDAP in /etc/nsswitch.conf. You will need to either\n\
upgrade to a version of glibc that does not have this problem (2.3.4 or\n\
later when used with nscd), disable LDAP in your nsswitch.conf, or use a\n\
mysqld that is not statically linked.\n");
#endif

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#ifdef HAVE_NPTL
  if (thd_lib_detected == THD_LIB_LT && !getenv("LD_ASSUME_KERNEL"))
    fprintf(stderr,"\n\
You are running a statically-linked LinuxThreads binary on an NPTL system.\n\
This can result in crashes on some distributions due to LT/NPTL conflicts.\n\
You should either build a dynamically-linked binary, or force LinuxThreads\n\
to be used with the LD_ASSUME_KERNEL environment variable. Please consult\n\
the documentation for your distribution on how to do that.\n");
#endif
  
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  if (locked_in_memory)
  {
    fprintf(stderr, "\n\
The \"--memlock\" argument, which was enabled, uses system calls that are\n\
unreliable and unstable on some operating systems and operating-system\n\
versions (notably, some versions of Linux).  This crash could be due to use\n\
of those buggy OS calls.  You should consider whether you really need the\n\
\"--memlock\" parameter and/or consult the OS distributer about \"mlockall\"\n\
bugs.\n");
  }

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#ifdef HAVE_WRITE_CORE
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  if (test_flags & TEST_CORE_ON_SIGNAL)
  {
    fprintf(stderr, "Writing a core file\n");
    fflush(stderr);
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    my_write_core(sig);
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  }
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#endif

#ifndef __WIN__
  /* On Windows, do not terminate, but pass control to exception filter */
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  exit(1);
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#endif
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}

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#if !defined(__WIN__)
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#ifndef SA_RESETHAND
#define SA_RESETHAND 0
#endif
#ifndef SA_NODEFER
#define SA_NODEFER 0
#endif
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#ifndef EMBEDDED_LIBRARY

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static void init_signals(void)
{
  sigset_t set;
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  struct sigaction sa;
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  DBUG_ENTER("init_signals");

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  my_sigset(THR_SERVER_ALARM,print_signal_warning); // Should never be called!
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  if (!(test_flags & TEST_NO_STACKTRACE) || (test_flags & TEST_CORE_ON_SIGNAL))
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  {
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    sa.sa_flags = SA_RESETHAND | SA_NODEFER;
    sigemptyset(&sa.sa_mask);
    sigprocmask(SIG_SETMASK,&sa.sa_mask,NULL);

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#ifdef HAVE_STACKTRACE
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    my_init_stacktrace();
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#endif
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#if defined(__amiga__)
    sa.sa_handler=(void(*)())handle_segfault;
#else
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    sa.sa_handler=handle_segfault;
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#endif
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    sigaction(SIGSEGV, &sa, NULL);
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    sigaction(SIGABRT, &sa, NULL);
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#ifdef SIGBUS
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    sigaction(SIGBUS, &sa, NULL);
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#endif
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    sigaction(SIGILL, &sa, NULL);
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    sigaction(SIGFPE, &sa, NULL);
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  }
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#ifdef HAVE_GETRLIMIT
  if (test_flags & TEST_CORE_ON_SIGNAL)
  {
    /* Change limits so that we will get a core file */
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    STRUCT_RLIMIT rl;
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    rl.rlim_cur = rl.rlim_max = RLIM_INFINITY;
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    if (setrlimit(RLIMIT_CORE, &rl) && global_system_variables.log_warnings)
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      sql_print_warning("setrlimit could not change the size of core files to 'infinity';  We may not be able to generate a core file on signals");
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  }
#endif
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  (void) sigemptyset(&set);
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  my_sigset(SIGPIPE,SIG_IGN);
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  sigaddset(&set,SIGPIPE);
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#ifndef IGNORE_SIGHUP_SIGQUIT
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  sigaddset(&set,SIGQUIT);
  sigaddset(&set,SIGHUP);
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#endif
  sigaddset(&set,SIGTERM);
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  /* Fix signals if blocked by parents (can happen on Mac OS X) */
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  sigemptyset(&sa.sa_mask);
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  sa.sa_flags = 0;
  sa.sa_handler = print_signal_warning;
  sigaction(SIGTERM, &sa, (struct sigaction*) 0);
  sa.sa_flags = 0;
  sa.sa_handler = print_signal_warning;
  sigaction(SIGHUP, &sa, (struct sigaction*) 0);
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#ifdef SIGTSTP
  sigaddset(&set,SIGTSTP);
#endif
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  if (thd_lib_detected != THD_LIB_LT)
    sigaddset(&set,THR_SERVER_ALARM);
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  if (test_flags & TEST_SIGINT)
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  {
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    my_sigset(thr_kill_signal, end_thread_signal);
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    // May be SIGINT
    sigdelset(&set, thr_kill_signal);
  }
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  else
    sigaddset(&set,SIGINT);
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  sigprocmask(SIG_SETMASK,&set,NULL);
  pthread_sigmask(SIG_SETMASK,&set,NULL);
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  DBUG_VOID_RETURN;
}


static void start_signal_handler(void)
{
  int error;
  pthread_attr_t thr_attr;
  DBUG_ENTER("start_signal_handler");
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  (void) pthread_attr_init(&thr_attr);
#if !defined(HAVE_DEC_3_2_THREADS)
  pthread_attr_setscope(&thr_attr,PTHREAD_SCOPE_SYSTEM);
  (void) pthread_attr_setdetachstate(&thr_attr,PTHREAD_CREATE_DETACHED);
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#if defined(__ia64__) || defined(__ia64)
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  /*
    Peculiar things with ia64 platforms - it seems we only have half the
    stack size in reality, so we have to double it here
  */
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  pthread_attr_setstacksize(&thr_attr,my_thread_stack_size*2);
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#else
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  pthread_attr_setstacksize(&thr_attr,my_thread_stack_size);
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#endif
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#endif

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  mysql_mutex_lock(&LOCK_thread_count);
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  if ((error= mysql_thread_create(key_thread_signal_hand,
                                  &signal_thread, &thr_attr, signal_hand, 0)))
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  {
    sql_print_error("Can't create interrupt-thread (error %d, errno: %d)",
		    error,errno);
    exit(1);
  }
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  mysql_cond_wait(&COND_thread_count, &LOCK_thread_count);
  mysql_mutex_unlock(&LOCK_thread_count);
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  (void) pthread_attr_destroy(&thr_attr);
  DBUG_VOID_RETURN;
}


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/** This threads handles all signals and alarms. */
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/* ARGSUSED */
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pthread_handler_t signal_hand(void *arg __attribute__((unused)))
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{
  sigset_t set;
  int sig;
  my_thread_init();				// Init new thread
  DBUG_ENTER("signal_hand");
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  signal_thread_in_use= 1;

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  /*
    Setup alarm handler
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    This should actually be '+ max_number_of_slaves' instead of +10,
    but the +10 should be quite safe.
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  */
2656
  init_thr_alarm(thread_scheduler->max_threads +
2657
		 global_system_variables.max_insert_delayed_threads + 10);
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  if (thd_lib_detected != THD_LIB_LT && (test_flags & TEST_SIGINT))
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  {
    (void) sigemptyset(&set);			// Setup up SIGINT for debug
    (void) sigaddset(&set,SIGINT);		// For debugging
    (void) pthread_sigmask(SIG_UNBLOCK,&set,NULL);
  }
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  (void) sigemptyset(&set);			// Setup up SIGINT for debug
#ifdef USE_ONE_SIGNAL_HAND
  (void) sigaddset(&set,THR_SERVER_ALARM);	// For alarms
#endif
2668
#ifndef IGNORE_SIGHUP_SIGQUIT
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  (void) sigaddset(&set,SIGQUIT);
  (void) sigaddset(&set,SIGHUP);
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#endif
  (void) sigaddset(&set,SIGTERM);
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  (void) sigaddset(&set,SIGTSTP);

  /* Save pid to this process (or thread on Linux) */
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  if (!opt_bootstrap)
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    create_pid_file();

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  /*
    signal to start_signal_handler that we are ready
    This works by waiting for start_signal_handler to free mutex,
    after which we signal it that we are ready.
    At this pointer there is no other threads running, so there
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    should not be any other mysql_cond_signal() calls.
2685
  */
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  mysql_mutex_lock(&LOCK_thread_count);
  mysql_mutex_unlock(&LOCK_thread_count);
  mysql_cond_broadcast(&COND_thread_count);
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  (void) pthread_sigmask(SIG_BLOCK,&set,NULL);
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  for (;;)
  {
    int error;					// Used when debugging
    if (shutdown_in_progress && !abort_loop)
    {
2696
      sig= SIGTERM;
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      error=0;
    }
    else
      while ((error=my_sigwait(&set,&sig)) == EINTR) ;
    if (cleanup_done)
2702
    {
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      DBUG_PRINT("quit",("signal_handler: calling my_thread_end()"));
2704
      my_thread_end();
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      signal_thread_in_use= 0;
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      DBUG_LEAVE;                               // Must match DBUG_ENTER()
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      pthread_exit(0);				// Safety
2708
      return 0;                                 // Avoid compiler warnings
2709
    }
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    switch (sig) {
    case SIGTERM:
    case SIGQUIT:
    case SIGKILL:
#ifdef EXTRA_DEBUG
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      sql_print_information("Got signal %d to shutdown mysqld",sig);
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#endif
2717
      /* switch to the old log message processing */
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      logger.set_handlers(LOG_FILE, opt_slow_log ? LOG_FILE:LOG_NONE,
                          opt_log ? LOG_FILE:LOG_NONE);
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      DBUG_PRINT("info",("Got signal: %d  abort_loop: %d",sig,abort_loop));
      if (!abort_loop)
      {
	abort_loop=1;				// mark abort for threads
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#ifdef HAVE_PSI_INTERFACE
        /* Delete the instrumentation for the signal thread */
        if (likely(PSI_server != NULL))
          PSI_server->delete_current_thread();
#endif
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#ifdef USE_ONE_SIGNAL_HAND
	pthread_t tmp;
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        if (mysql_thread_create(0, /* Not instrumented */
                                &tmp, &connection_attrib, kill_server_thread,
                                (void*) &sig))
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	  sql_print_error("Can't create thread to kill server");
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#else
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	kill_server((void*) sig);	// MIT THREAD has a alarm thread
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#endif
      }
      break;
    case SIGHUP:
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      if (!abort_loop)
      {
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        bool not_used;
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	mysql_print_status();		// Print some debug info
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	reload_acl_and_cache((THD*) 0,
			     (REFRESH_LOG | REFRESH_TABLES | REFRESH_FAST |
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			      REFRESH_GRANT |
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			      REFRESH_THREADS | REFRESH_HOSTS),
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			     (TABLE_LIST*) 0, &not_used); // Flush logs
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      }
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      /* reenable logs after the options were reloaded */
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      if (log_output_options & LOG_NONE)
      {
        logger.set_handlers(LOG_FILE,
                            opt_slow_log ? LOG_TABLE : LOG_NONE,
                            opt_log ? LOG_TABLE : LOG_NONE);
      }
      else
      {
        logger.set_handlers(LOG_FILE,
                            opt_slow_log ? log_output_options : LOG_NONE,
                            opt_log ? log_output_options : LOG_NONE);
      }
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      break;
#ifdef USE_ONE_SIGNAL_HAND
    case THR_SERVER_ALARM:
      process_alarm(sig);			// Trigger alarms.
      break;
#endif
    default:
#ifdef EXTRA_DEBUG
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      sql_print_warning("Got signal: %d  error: %d",sig,error); /* purecov: tested */
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#endif
      break;					/* purecov: tested */
    }
  }
  return(0);					/* purecov: deadcode */
}

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static void check_data_home(const char *path)
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{}
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#endif /*!EMBEDDED_LIBRARY*/
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#endif	/* __WIN__*/


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/**
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  All global error messages are sent here where the first one is stored
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  for the client.
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*/
/* ARGSUSED */
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extern "C" void my_message_sql(uint error, const char *str, myf MyFlags);
2793

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void my_message_sql(uint error, const char *str, myf MyFlags)
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{
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  THD *thd= current_thd;
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  DBUG_ENTER("my_message_sql");
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  DBUG_PRINT("error", ("error: %u  message: '%s'", error, str));
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  DBUG_ASSERT(str != NULL);
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  /*
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    An error should have a valid error number (!= 0), so it can be caught
    in stored procedures by SQL exception handlers.
    Calling my_error() with error == 0 is a bug.
    Remaining known places to fix:
    - storage/myisam/mi_create.c, my_printf_error()
    TODO:
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    DBUG_ASSERT(error != 0);
  */
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  if (error == 0)
  {
    /* At least, prevent new abuse ... */
    DBUG_ASSERT(strncmp(str, "MyISAM table", 12) == 0);
    error= ER_UNKNOWN_ERROR;
  }

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  mysql_audit_general(thd, MYSQL_AUDIT_GENERAL_ERROR, error, str);

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  if (thd)
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  {
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    if (MyFlags & ME_FATALERROR)
      thd->is_fatal_error= 1;
    (void) thd->raise_condition(error,
                                NULL,
                                MYSQL_ERROR::WARN_LEVEL_ERROR,
                                str);
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  }
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  /* When simulating OOM, skip writing to error log to avoid mtr errors */
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  DBUG_EXECUTE_IF("simulate_out_of_memory", DBUG_VOID_RETURN;);
2832

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  if (!thd || MyFlags & ME_NOREFRESH)
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    sql_print_error("%s: %s",my_progname,str); /* purecov: inspected */
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  DBUG_VOID_RETURN;
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}

2838

2839
#ifndef EMBEDDED_LIBRARY
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extern "C" void *my_str_malloc_mysqld(size_t size);
extern "C" void my_str_free_mysqld(void *ptr);

void *my_str_malloc_mysqld(size_t size)
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{
  return my_malloc(size, MYF(MY_FAE));
}


2849
void my_str_free_mysqld(void *ptr)
2850
{
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  my_free(ptr);
2852
}
2853
#endif /* EMBEDDED_LIBRARY */
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#ifdef __WIN__

2858
pthread_handler_t handle_shutdown(void *arg)
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{
  MSG msg;
  my_thread_init();

  /* this call should create the message queue for this thread */
  PeekMessage(&msg, NULL, 1, 65534,PM_NOREMOVE);
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#if !defined(EMBEDDED_LIBRARY)
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  if (WaitForSingleObject(hEventShutdown,INFINITE)==WAIT_OBJECT_0)
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#endif /* EMBEDDED_LIBRARY */
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     kill_server(MYSQL_KILL_SIGNAL);
  return 0;
}
#endif

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const char *load_default_groups[]= {
2874
#ifdef WITH_NDBCLUSTER_STORAGE_ENGINE
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"mysql_cluster",
#endif
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"mysqld","server", MYSQL_BASE_VERSION, 0, 0};

2879
#if defined(__WIN__) && !defined(EMBEDDED_LIBRARY)
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static const int load_default_groups_sz=
sizeof(load_default_groups)/sizeof(load_default_groups[0]);
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#endif
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/**
  Initialize one of the global date/time format variables.
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  @param format_type		What kind of format should be supported
  @param var_ptr		Pointer to variable that should be updated
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  @retval
2892
    0 ok
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  @retval
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    1 error
*/

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static bool init_global_datetime_format(timestamp_type format_type,
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                                        DATE_TIME_FORMAT *format)
2899
{
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  /*
    Get command line option
    format->format.str is already set by my_getopt
  */
  format->format.length= strlen(format->format.str);
2905

2906
  if (parse_date_time_format(format_type, format))
2907
  {
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    fprintf(stderr, "Wrong date/time format specifier: %s\n",
            format->format.str);
    return true;
2911
  }
2912
  return false;
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}

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SHOW_VAR com_status_vars[]= {
  {"admin_commands",       (char*) offsetof(STATUS_VAR, com_other), SHOW_LONG_STATUS},
  {"assign_to_keycache",   (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_ASSIGN_TO_KEYCACHE]), SHOW_LONG_STATUS},
  {"alter_db",             (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_ALTER_DB]), SHOW_LONG_STATUS},
  {"alter_db_upgrade",     (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_ALTER_DB_UPGRADE]), SHOW_LONG_STATUS},
  {"alter_event",          (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_ALTER_EVENT]), SHOW_LONG_STATUS},
  {"alter_function",       (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_ALTER_FUNCTION]), SHOW_LONG_STATUS},
  {"alter_procedure",      (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_ALTER_PROCEDURE]), SHOW_LONG_STATUS},
  {"alter_server",         (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_ALTER_SERVER]), SHOW_LONG_STATUS},
  {"alter_table",          (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_ALTER_TABLE]), SHOW_LONG_STATUS},
  {"alter_tablespace",     (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_ALTER_TABLESPACE]), SHOW_LONG_STATUS},
  {"analyze",              (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_ANALYZE]), SHOW_LONG_STATUS},
  {"begin",                (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_BEGIN]), SHOW_LONG_STATUS},
  {"binlog",               (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_BINLOG_BASE64_EVENT]), SHOW_LONG_STATUS},
  {"call_procedure",       (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_CALL]), SHOW_LONG_STATUS},
  {"change_db",            (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_CHANGE_DB]), SHOW_LONG_STATUS},
  {"change_master",        (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_CHANGE_MASTER]), SHOW_LONG_STATUS},
  {"check",                (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_CHECK]), SHOW_LONG_STATUS},
  {"checksum",             (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_CHECKSUM]), SHOW_LONG_STATUS},
  {"commit",               (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_COMMIT]), SHOW_LONG_STATUS},
  {"create_db",            (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_CREATE_DB]), SHOW_LONG_STATUS},
  {"create_event",         (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_CREATE_EVENT]), SHOW_LONG_STATUS},
  {"create_function",      (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_CREATE_SPFUNCTION]), SHOW_LONG_STATUS},
  {"create_index",         (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_CREATE_INDEX]), SHOW_LONG_STATUS},
  {"create_procedure",     (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_CREATE_PROCEDURE]), SHOW_LONG_STATUS},
  {"create_server",        (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_CREATE_SERVER]), SHOW_LONG_STATUS},
  {"create_table",         (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_CREATE_TABLE]), SHOW_LONG_STATUS},
  {"create_trigger",       (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_CREATE_TRIGGER]), SHOW_LONG_STATUS},
  {"create_udf",           (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_CREATE_FUNCTION]), SHOW_LONG_STATUS},
  {"create_user",          (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_CREATE_USER]), SHOW_LONG_STATUS},
  {"create_view",          (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_CREATE_VIEW]), SHOW_LONG_STATUS},
  {"dealloc_sql",          (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_DEALLOCATE_PREPARE]), SHOW_LONG_STATUS},
  {"delete",               (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_DELETE]), SHOW_LONG_STATUS},
  {"delete_multi",         (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_DELETE_MULTI]), SHOW_LONG_STATUS},
  {"do",                   (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_DO]), SHOW_LONG_STATUS},
  {"drop_db",              (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_DROP_DB]), SHOW_LONG_STATUS},
  {"drop_event",           (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_DROP_EVENT]), SHOW_LONG_STATUS},
  {"drop_function",        (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_DROP_FUNCTION]), SHOW_LONG_STATUS},
  {"drop_index",           (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_DROP_INDEX]), SHOW_LONG_STATUS},
  {"drop_procedure",       (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_DROP_PROCEDURE]), SHOW_LONG_STATUS},
  {"drop_server",          (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_DROP_SERVER]), SHOW_LONG_STATUS},
  {"drop_table",           (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_DROP_TABLE]), SHOW_LONG_STATUS},
  {"drop_trigger",         (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_DROP_TRIGGER]), SHOW_LONG_STATUS},
  {"drop_user",            (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_DROP_USER]), SHOW_LONG_STATUS},
  {"drop_view",            (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_DROP_VIEW]), SHOW_LONG_STATUS},
  {"empty_query",          (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_EMPTY_QUERY]), SHOW_LONG_STATUS},
  {"execute_sql",          (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_EXECUTE]), SHOW_LONG_STATUS},
  {"flush",                (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_FLUSH]), SHOW_LONG_STATUS},
  {"grant",                (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_GRANT]), SHOW_LONG_STATUS},
  {"ha_close",             (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_HA_CLOSE]), SHOW_LONG_STATUS},
  {"ha_open",              (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_HA_OPEN]), SHOW_LONG_STATUS},
  {"ha_read",              (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_HA_READ]), SHOW_LONG_STATUS},
  {"help",                 (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_HELP]), SHOW_LONG_STATUS},
  {"insert",               (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_INSERT]), SHOW_LONG_STATUS},
  {"insert_select",        (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_INSERT_SELECT]), SHOW_LONG_STATUS},
  {"install_plugin",       (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_INSTALL_PLUGIN]), SHOW_LONG_STATUS},
  {"kill",                 (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_KILL]), SHOW_LONG_STATUS},
  {"load",                 (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_LOAD]), SHOW_LONG_STATUS},
  {"lock_tables",          (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_LOCK_TABLES]), SHOW_LONG_STATUS},
  {"optimize",             (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_OPTIMIZE]), SHOW_LONG_STATUS},
  {"preload_keys",         (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_PRELOAD_KEYS]), SHOW_LONG_STATUS},
  {"prepare_sql",          (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_PREPARE]), SHOW_LONG_STATUS},
  {"purge",                (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_PURGE]), SHOW_LONG_STATUS},
  {"purge_before_date",    (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_PURGE_BEFORE]), SHOW_LONG_STATUS},
  {"release_savepoint",    (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_RELEASE_SAVEPOINT]), SHOW_LONG_STATUS},
  {"rename_table",         (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_RENAME_TABLE]), SHOW_LONG_STATUS},
  {"rename_user",          (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_RENAME_USER]), SHOW_LONG_STATUS},
  {"repair",               (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_REPAIR]), SHOW_LONG_STATUS},
  {"replace",              (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_REPLACE]), SHOW_LONG_STATUS},
  {"replace_select",       (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_REPLACE_SELECT]), SHOW_LONG_STATUS},
  {"reset",                (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_RESET]), SHOW_LONG_STATUS},
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  {"resignal",             (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_RESIGNAL]), SHOW_LONG_STATUS},
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  {"revoke",               (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_REVOKE]), SHOW_LONG_STATUS},
  {"revoke_all",           (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_REVOKE_ALL]), SHOW_LONG_STATUS},
  {"rollback",             (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_ROLLBACK]), SHOW_LONG_STATUS},
  {"rollback_to_savepoint",(char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_ROLLBACK_TO_SAVEPOINT]), SHOW_LONG_STATUS},
  {"savepoint",            (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SAVEPOINT]), SHOW_LONG_STATUS},
  {"select",               (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SELECT]), SHOW_LONG_STATUS},
  {"set_option",           (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SET_OPTION]), SHOW_LONG_STATUS},
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  {"signal",               (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SIGNAL]), SHOW_LONG_STATUS},
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  {"show_authors",         (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_AUTHORS]), SHOW_LONG_STATUS},
  {"show_binlog_events",   (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_BINLOG_EVENTS]), SHOW_LONG_STATUS},
  {"show_binlogs",         (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_BINLOGS]), SHOW_LONG_STATUS},
  {"show_charsets",        (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_CHARSETS]), SHOW_LONG_STATUS},
  {"show_collations",      (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_COLLATIONS]), SHOW_LONG_STATUS},
  {"show_contributors",    (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_CONTRIBUTORS]), SHOW_LONG_STATUS},
  {"show_create_db",       (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_CREATE_DB]), SHOW_LONG_STATUS},
  {"show_create_event",    (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_CREATE_EVENT]), SHOW_LONG_STATUS},
  {"show_create_func",     (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_CREATE_FUNC]), SHOW_LONG_STATUS},
  {"show_create_proc",     (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_CREATE_PROC]), SHOW_LONG_STATUS},
  {"show_create_table",    (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_CREATE]), SHOW_LONG_STATUS},
  {"show_create_trigger",  (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_CREATE_TRIGGER]), SHOW_LONG_STATUS},
  {"show_databases",       (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_DATABASES]), SHOW_LONG_STATUS},
  {"show_engine_logs",     (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_ENGINE_LOGS]), SHOW_LONG_STATUS},
  {"show_engine_mutex",    (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_ENGINE_MUTEX]), SHOW_LONG_STATUS},
  {"show_engine_status",   (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_ENGINE_STATUS]), SHOW_LONG_STATUS},
  {"show_events",          (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_EVENTS]), SHOW_LONG_STATUS},
  {"show_errors",          (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_ERRORS]), SHOW_LONG_STATUS},
  {"show_fields",          (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_FIELDS]), SHOW_LONG_STATUS},
#ifndef DBUG_OFF
  {"show_function_code",   (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_FUNC_CODE]), SHOW_LONG_STATUS},
#endif
  {"show_function_status", (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_STATUS_FUNC]), SHOW_LONG_STATUS},
  {"show_grants",          (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_GRANTS]), SHOW_LONG_STATUS},
  {"show_keys",            (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_KEYS]), SHOW_LONG_STATUS},
  {"show_master_status",   (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_MASTER_STAT]), SHOW_LONG_STATUS},
  {"show_new_master",      (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_NEW_MASTER]), SHOW_LONG_STATUS},
  {"show_open_tables",     (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_OPEN_TABLES]), SHOW_LONG_STATUS},
  {"show_plugins",         (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_PLUGINS]), SHOW_LONG_STATUS},
  {"show_privileges",      (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_PRIVILEGES]), SHOW_LONG_STATUS},
#ifndef DBUG_OFF
  {"show_procedure_code",  (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_PROC_CODE]), SHOW_LONG_STATUS},
#endif
  {"show_procedure_status",(char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_STATUS_PROC]), SHOW_LONG_STATUS},
  {"show_processlist",     (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_PROCESSLIST]), SHOW_LONG_STATUS},
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  {"show_profile",         (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_PROFILE]), SHOW_LONG_STATUS},
  {"show_profiles",        (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_PROFILES]), SHOW_LONG_STATUS},
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  {"show_relaylog_events", (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_RELAYLOG_EVENTS]), SHOW_LONG_STATUS},
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  {"show_slave_hosts",     (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_SLAVE_HOSTS]), SHOW_LONG_STATUS},
  {"show_slave_status",    (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_SLAVE_STAT]), SHOW_LONG_STATUS},
  {"show_status",          (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_STATUS]), SHOW_LONG_STATUS},
  {"show_storage_engines", (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_STORAGE_ENGINES]), SHOW_LONG_STATUS},
  {"show_table_status",    (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_TABLE_STATUS]), SHOW_LONG_STATUS},
  {"show_tables",          (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_TABLES]), SHOW_LONG_STATUS},
  {"show_triggers",        (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_TRIGGERS]), SHOW_LONG_STATUS},
  {"show_variables",       (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_VARIABLES]), SHOW_LONG_STATUS},
  {"show_warnings",        (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SHOW_WARNS]), SHOW_LONG_STATUS},
  {"slave_start",          (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SLAVE_START]), SHOW_LONG_STATUS},
  {"slave_stop",           (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_SLAVE_STOP]), SHOW_LONG_STATUS},
  {"stmt_close",           (char*) offsetof(STATUS_VAR, com_stmt_close), SHOW_LONG_STATUS},
  {"stmt_execute",         (char*) offsetof(STATUS_VAR, com_stmt_execute), SHOW_LONG_STATUS},
  {"stmt_fetch",           (char*) offsetof(STATUS_VAR, com_stmt_fetch), SHOW_LONG_STATUS},
  {"stmt_prepare",         (char*) offsetof(STATUS_VAR, com_stmt_prepare), SHOW_LONG_STATUS},
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  {"stmt_reprepare",       (char*) offsetof(STATUS_VAR, com_stmt_reprepare), SHOW_LONG_STATUS},
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  {"stmt_reset",           (char*) offsetof(STATUS_VAR, com_stmt_reset), SHOW_LONG_STATUS},
  {"stmt_send_long_data",  (char*) offsetof(STATUS_VAR, com_stmt_send_long_data), SHOW_LONG_STATUS},
  {"truncate",             (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_TRUNCATE]), SHOW_LONG_STATUS},
  {"uninstall_plugin",     (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_UNINSTALL_PLUGIN]), SHOW_LONG_STATUS},
  {"unlock_tables",        (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_UNLOCK_TABLES]), SHOW_LONG_STATUS},
  {"update",               (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_UPDATE]), SHOW_LONG_STATUS},
  {"update_multi",         (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_UPDATE_MULTI]), SHOW_LONG_STATUS},
  {"xa_commit",            (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_XA_COMMIT]),SHOW_LONG_STATUS},
  {"xa_end",               (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_XA_END]),SHOW_LONG_STATUS},
  {"xa_prepare",           (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_XA_PREPARE]),SHOW_LONG_STATUS},
  {"xa_recover",           (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_XA_RECOVER]),SHOW_LONG_STATUS},
  {"xa_rollback",          (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_XA_ROLLBACK]),SHOW_LONG_STATUS},
  {"xa_start",             (char*) offsetof(STATUS_VAR, com_stat[(uint) SQLCOM_XA_START]),SHOW_LONG_STATUS},
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  {NullS, NullS, SHOW_LONG}
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};
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/**
  Create the name of the default general log file
  
  @param[IN] buff    Location for building new string.
  @param[IN] log_ext The extension for the file (e.g .log)
  @returns Pointer to a new string containing the name
*/
static inline char *make_default_log_name(char *buff,const char* log_ext)
{
  return make_log_name(buff, default_logfile_name, log_ext);
}

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static int init_common_variables()
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{
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  char buff[FN_REFLEN];
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  umask(((~my_umask) & 0666));
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  my_decimal_set_zero(&decimal_zero); // set decimal_zero constant;
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  tzset();			// Set tzname

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  max_system_variables.pseudo_thread_id= (ulong)~0;
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  server_start_time= flush_status_time= my_time(0);
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  /* TODO: remove this when my_time_t is 64 bit compatible */
  if (server_start_time >= (time_t) MY_TIME_T_MAX)
  {
    sql_print_error("This MySQL server doesn't support dates later then 2038");
    return 1;
  }

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  rpl_filter= new Rpl_filter;
  binlog_filter= new Rpl_filter;
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  if (!rpl_filter || !binlog_filter)
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  {
    sql_perror("Could not allocate replication and binlog filters");
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    return 1;
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  }

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  if (init_thread_environment() ||
      mysql_init_variables())
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    return 1;
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#ifdef HAVE_TZNAME
  {
    struct tm tm_tmp;
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    localtime_r(&server_start_time,&tm_tmp);
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    strmake(system_time_zone, tzname[tm_tmp.tm_isdst != 0 ? 1 : 0],
            sizeof(system_time_zone)-1);

 }
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#endif
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  /*
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    We set SYSTEM time zone as reasonable default and
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    also for failure of my_tz_init() and bootstrap mode.
    If user explicitly set time zone with --default-time-zone
    option we will change this value in my_tz_init().
  */
  global_system_variables.time_zone= my_tz_SYSTEM;
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  /*
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    Init mutexes for the global MYSQL_BIN_LOG objects.
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    As safe_mutex depends on what MY_INIT() does, we can't init the mutexes of
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    global MYSQL_BIN_LOGs in their constructors, because then they would be
    inited before MY_INIT(). So we do it here.
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  */
  mysql_bin_log.init_pthread_objects();
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  if (gethostname(glob_hostname,sizeof(glob_hostname)) < 0)
  {
    strmake(glob_hostname, STRING_WITH_LEN("localhost"));
    sql_print_warning("gethostname failed, using '%s' as hostname",
                      glob_hostname);
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    strmake(default_logfile_name, STRING_WITH_LEN("mysql"));
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  }
  else
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    strmake(default_logfile_name, glob_hostname, 
	    sizeof(default_logfile_name)-5);

  strmake(pidfile_name, default_logfile_name, sizeof(pidfile_name)-5);
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  strmov(fn_ext(pidfile_name),".pid");		// Add proper extension
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  /*
    The default-storage-engine entry in my_long_options should have a
    non-null default value. It was earlier intialized as
    (longlong)"MyISAM" in my_long_options but this triggered a
    compiler error in the Sun Studio 12 compiler. As a work-around we
    set the def_value member to 0 in my_long_options and initialize it
    to the correct value here.
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    From MySQL 5.5 onwards, the default storage engine is InnoDB
    (except in the embedded server, where the default continues to
    be MyISAM)
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  */
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#ifdef EMBEDDED_LIBRARY
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  default_storage_engine= const_cast<char *>("MyISAM");
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#else
  default_storage_engine= const_cast<char *>("InnoDB");
#endif
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  /*
    Add server status variables to the dynamic list of
    status variables that is shown by SHOW STATUS.
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    Later, in plugin_init, and mysql_install_plugin
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    new entries could be added to that list.
  */
  if (add_status_vars(status_vars))
    return 1; // an error was already reported

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#ifndef DBUG_OFF
  /*
    We have few debug-only commands in com_status_vars, only visible in debug
    builds. for simplicity we enable the assert only in debug builds

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    There are 8 Com_ variables which don't have corresponding SQLCOM_ values:
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    (TODO strictly speaking they shouldn't be here, should not have Com_ prefix
    that is. Perhaps Stmt_ ? Comstmt_ ? Prepstmt_ ?)

      Com_admin_commands       => com_other
      Com_stmt_close           => com_stmt_close
      Com_stmt_execute         => com_stmt_execute
      Com_stmt_fetch           => com_stmt_fetch
      Com_stmt_prepare         => com_stmt_prepare
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      Com_stmt_reprepare       => com_stmt_reprepare
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      Com_stmt_reset           => com_stmt_reset
      Com_stmt_send_long_data  => com_stmt_send_long_data

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    With this correction the number of Com_ variables (number of elements in
    the array, excluding the last element - terminator) must match the number
    of SQLCOM_ constants.
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  */
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  compile_time_assert(sizeof(com_status_vars)/sizeof(com_status_vars[0]) - 1 ==
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                     SQLCOM_END + 8);
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#endif

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  if (get_options(&remaining_argc, &remaining_argv))
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    return 1;
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  set_server_version();

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#ifndef EMBEDDED_LIBRARY
  if (opt_help && !opt_verbose)
    unireg_abort(0);
#endif /*!EMBEDDED_LIBRARY*/

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  DBUG_PRINT("info",("%s  Ver %s for %s on %s\n",my_progname,
		     server_version, SYSTEM_TYPE,MACHINE_TYPE));

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#ifdef HAVE_LARGE_PAGES
  /* Initialize large page size */
  if (opt_large_pages && (opt_large_page_size= my_get_large_page_size()))
  {
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      DBUG_PRINT("info", ("Large page set, large_page_size = %d",
                 opt_large_page_size));
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      my_use_large_pages= 1;
      my_large_page_size= opt_large_page_size;
  }
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  else
  {
    opt_large_pages= 0;
    /* 
       Either not configured to use large pages or Linux haven't
       been compiled with large page support
    */
  }
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#endif /* HAVE_LARGE_PAGES */
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#ifdef HAVE_SOLARIS_LARGE_PAGES
#define LARGE_PAGESIZE (4*1024*1024)  /* 4MB */
#define SUPER_LARGE_PAGESIZE (256*1024*1024)  /* 256MB */
  if (opt_large_pages)
  {
  /*
    tell the kernel that we want to use 4/256MB page for heap storage
    and also for the stack. We use 4 MByte as default and if the
    super-large-page is set we increase it to 256 MByte. 256 MByte
    is for server installations with GBytes of RAM memory where
    the MySQL Server will have page caches and other memory regions
    measured in a number of GBytes.
    We use as big pages as possible which isn't bigger than the above
    desired page sizes.
  */
   int nelem;
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   size_t max_desired_page_size;
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   if (opt_super_large_pages)
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     max_desired_page_size= SUPER_LARGE_PAGESIZE;
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   else
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     max_desired_page_size= LARGE_PAGESIZE;
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   nelem = getpagesizes(NULL, 0);
   if (nelem > 0)
   {
     size_t *pagesize = (size_t *) malloc(sizeof(size_t) * nelem);
     if (pagesize != NULL && getpagesizes(pagesize, nelem) > 0)
     {
       size_t i, max_page_size= 0;
       for (i= 0; i < nelem; i++)
       {
         if (pagesize[i] > max_page_size &&
             pagesize[i] <= max_desired_page_size)
            max_page_size= pagesize[i];
       }
       free(pagesize);
       if (max_page_size > 0)
       {
         struct memcntl_mha mpss;

         mpss.mha_cmd= MHA_MAPSIZE_BSSBRK;
         mpss.mha_pagesize= max_page_size;
         mpss.mha_flags= 0;
         memcntl(NULL, 0, MC_HAT_ADVISE, (caddr_t)&mpss, 0, 0);
         mpss.mha_cmd= MHA_MAPSIZE_STACK;
         memcntl(NULL, 0, MC_HAT_ADVISE, (caddr_t)&mpss, 0, 0);
       }
     }
   }
  }
#endif /* HAVE_SOLARIS_LARGE_PAGES */
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  /* connections and databases needs lots of files */
  {
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    uint files, wanted_files, max_open_files;
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    /* MyISAM requires two file handles per table. */
    wanted_files= 10+max_connections+table_cache_size*2;
    /*
      We are trying to allocate no less than max_connections*5 file
      handles (i.e. we are trying to set the limit so that they will
      be available).  In addition, we allocate no less than how much
      was already allocated.  However below we report a warning and
      recompute values only if we got less file handles than were
      explicitly requested.  No warning and re-computation occur if we
      can't get max_connections*5 but still got no less than was
      requested (value of wanted_files).
    */
    max_open_files= max(max(wanted_files, max_connections*5),
                        open_files_limit);
    files= my_set_max_open_files(max_open_files);
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    if (files < wanted_files)
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    {
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      if (!open_files_limit)
      {
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        /*
          If we have requested too much file handles than we bring
          max_connections in supported bounds.
        */
        max_connections= (ulong) min(files-10-TABLE_OPEN_CACHE_MIN*2,
                                     max_connections);
        /*
          Decrease table_cache_size according to max_connections, but
          not below TABLE_OPEN_CACHE_MIN.  Outer min() ensures that we
          never increase table_cache_size automatically (that could
          happen if max_connections is decreased above).
        */
        table_cache_size= (ulong) min(max((files-10-max_connections)/2,
                                          TABLE_OPEN_CACHE_MIN),
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                                      table_cache_size);
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	DBUG_PRINT("warning",
		   ("Changed limits: max_open_files: %u  max_connections: %ld  table_cache: %ld",
		    files, max_connections, table_cache_size));
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	if (global_system_variables.log_warnings)
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	  sql_print_warning("Changed limits: max_open_files: %u  max_connections: %ld  table_cache: %ld",
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			files, max_connections, table_cache_size);
      }
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      else if (global_system_variables.log_warnings)
3325
	sql_print_warning("Could not increase number of max_open_files to more than %u (request: %u)", files, wanted_files);
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    }
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    open_files_limit= files;
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  }
  unireg_init(opt_specialflag); /* Set up extern variabels */
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  if (!(my_default_lc_messages=
        my_locale_by_name(lc_messages)))
  {
    sql_print_error("Unknown locale: '%s'", lc_messages);
    return 1;
  }
  global_system_variables.lc_messages= my_default_lc_messages;
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  if (init_errmessage())	/* Read error messages from file */
    return 1;
3339
  init_client_errs();
3340
  mysql_client_plugin_init();
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3341
  lex_init();
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  if (item_create_init())
    return 1;
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  item_init();
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  my_regex_init(&my_charset_latin1);
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  /*
    Process a comma-separated character set list and choose
    the first available character set. This is mostly for
    test purposes, to be able to start "mysqld" even if
    the requested character set is not available (see bug#18743).
  */
  for (;;)
  {
    char *next_character_set_name= strchr(default_character_set_name, ',');
    if (next_character_set_name)
      *next_character_set_name++= '\0';
    if (!(default_charset_info=
          get_charset_by_csname(default_character_set_name,
                                MY_CS_PRIMARY, MYF(MY_WME))))
    {
      if (next_character_set_name)
      {
        default_character_set_name= next_character_set_name;
        default_collation_name= 0;          // Ignore collation
      }
      else
        return 1;                           // Eof of the list
    }
    else
      break;
  }

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  if (default_collation_name)
  {
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    CHARSET_INFO *default_collation;
    default_collation= get_charset_by_name(default_collation_name, MYF(0));
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    if (!default_collation)
    {
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      sql_print_error(ER_DEFAULT(ER_UNKNOWN_COLLATION), default_collation_name);
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      return 1;
    }
    if (!my_charset_same(default_charset_info, default_collation))
3383
    {
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      sql_print_error(ER_DEFAULT(ER_COLLATION_CHARSET_MISMATCH),
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		      default_collation_name,
		      default_charset_info->csname);
      return 1;
    }
    default_charset_info= default_collation;
  }
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  /* Set collactions that depends on the default collation */
  global_system_variables.collation_server=	 default_charset_info;
  global_system_variables.collation_database=	 default_charset_info;
  global_system_variables.collation_connection=  default_charset_info;
3395
  global_system_variables.character_set_results= default_charset_info;
3396
  global_system_variables.character_set_client=  default_charset_info;
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  if (!(character_set_filesystem= 
        get_charset_by_csname(character_set_filesystem_name,
                              MY_CS_PRIMARY, MYF(MY_WME))))
    return 1;
  global_system_variables.character_set_filesystem= character_set_filesystem;

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  if (!(my_default_lc_time_names=
        my_locale_by_name(lc_time_names_name)))
  {
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    sql_print_error("Unknown locale: '%s'", lc_time_names_name);
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    return 1;
  }
  global_system_variables.lc_time_names= my_default_lc_time_names;
3410

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  /* check log options and issue warnings if needed */
  if (opt_log && opt_logname && !(log_output_options & LOG_FILE) &&
      !(log_output_options & LOG_NONE))
    sql_print_warning("Although a path was specified for the "
                      "--log option, log tables are used. "
3416
                      "To enable logging to files use the --log-output option.");
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  if (opt_slow_log && opt_slow_logname && !(log_output_options & LOG_FILE)
      && !(log_output_options & LOG_NONE))
    sql_print_warning("Although a path was specified for the "
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3421
                      "--log-slow-queries option, log tables are used. "
3422
                      "To enable logging to files use the --log-output=file option.");
3423

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#define FIX_LOG_VAR(VAR, ALT)                                   \
  if (!VAR || !*VAR)                                            \
  {                                                             \
3427
    my_free(VAR); /* it could be an allocated empty string "" */ \
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    VAR= my_strdup(ALT, MYF(0));                                \
  }
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  FIX_LOG_VAR(opt_logname,
              make_default_log_name(buff, ".log"));
  FIX_LOG_VAR(opt_slow_logname,
              make_default_log_name(buff, "-slow.log"));
3435

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#if defined(ENABLED_DEBUG_SYNC)
  /* Initialize the debug sync facility. See debug_sync.cc. */
  if (debug_sync_init())
    return 1; /* purecov: tested */
#endif /* defined(ENABLED_DEBUG_SYNC) */

3442
#if (ENABLE_TEMP_POOL)
3443
  if (use_temp_pool && bitmap_init(&temp_pool,0,1024,1))
3444
    return 1;
3445 3446 3447 3448
#else
  use_temp_pool= 0;
#endif

3449
  if (my_dboptions_cache_init())
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    return 1;

3452 3453 3454 3455 3456 3457
  /*
    Ensure that lower_case_table_names is set on system where we have case
    insensitive names.  If this is not done the users MyISAM tables will
    get corrupted if accesses with names of different case.
  */
  DBUG_PRINT("info", ("lower_case_table_names: %d", lower_case_table_names));
3458 3459
  lower_case_file_system= test_if_case_insensitive(mysql_real_data_home);
  if (!lower_case_table_names && lower_case_file_system == 1)
3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488
  {
    if (lower_case_table_names_used)
    {
      if (global_system_variables.log_warnings)
	sql_print_warning("\
You have forced lower_case_table_names to 0 through a command-line \
option, even though your file system '%s' is case insensitive.  This means \
that you can corrupt a MyISAM table by accessing it with different cases. \
You should consider changing lower_case_table_names to 1 or 2",
			mysql_real_data_home);
    }
    else
    {
      if (global_system_variables.log_warnings)
	sql_print_warning("Setting lower_case_table_names=2 because file system for %s is case insensitive", mysql_real_data_home);
      lower_case_table_names= 2;
    }
  }
  else if (lower_case_table_names == 2 &&
           !(lower_case_file_system=
             (test_if_case_insensitive(mysql_real_data_home) == 1)))
  {
    if (global_system_variables.log_warnings)
      sql_print_warning("lower_case_table_names was set to 2, even though your "
                        "the file system '%s' is case sensitive.  Now setting "
                        "lower_case_table_names to 0 to avoid future problems.",
			mysql_real_data_home);
    lower_case_table_names= 0;
  }
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  else
  {
    lower_case_file_system=
      (test_if_case_insensitive(mysql_real_data_home) == 1);
  }
3494 3495 3496 3497 3498 3499

  /* Reset table_alias_charset, now that lower_case_table_names is set. */
  table_alias_charset= (lower_case_table_names ?
			files_charset_info :
			&my_charset_bin);

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  return 0;
}
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3503 3504

static int init_thread_environment()
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{
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  mysql_mutex_init(key_LOCK_thread_count, &LOCK_thread_count, MY_MUTEX_INIT_FAST);
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  mysql_mutex_init(key_LOCK_status, &LOCK_status, MY_MUTEX_INIT_FAST);
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  mysql_mutex_init(key_LOCK_delayed_insert,
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                   &LOCK_delayed_insert, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_delayed_status,
                   &LOCK_delayed_status, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_delayed_create,
                   &LOCK_delayed_create, MY_MUTEX_INIT_SLOW);
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  mysql_mutex_init(key_LOCK_manager,
                   &LOCK_manager, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_crypt, &LOCK_crypt, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_user_conn, &LOCK_user_conn, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_active_mi, &LOCK_active_mi, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_global_system_variables,
                   &LOCK_global_system_variables, MY_MUTEX_INIT_FAST);
  mysql_rwlock_init(key_rwlock_LOCK_system_variables_hash,
                    &LOCK_system_variables_hash);
  mysql_mutex_init(key_LOCK_prepared_stmt_count,
                   &LOCK_prepared_stmt_count, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_error_messages,
                   &LOCK_error_messages, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_uuid_generator,
                   &LOCK_uuid_generator, MY_MUTEX_INIT_FAST);
  mysql_mutex_init(key_LOCK_connection_count,
                   &LOCK_connection_count, MY_MUTEX_INIT_FAST);
3531
#ifdef HAVE_OPENSSL
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3532 3533
  mysql_mutex_init(key_LOCK_des_key_file,
                   &LOCK_des_key_file, MY_MUTEX_INIT_FAST);
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3534 3535 3536 3537
#ifndef HAVE_YASSL
  openssl_stdlocks= (openssl_lock_t*) OPENSSL_malloc(CRYPTO_num_locks() *
                                                     sizeof(openssl_lock_t));
  for (int i= 0; i < CRYPTO_num_locks(); ++i)
3538
    mysql_rwlock_init(key_rwlock_openssl, &openssl_stdlocks[i].lock);
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  CRYPTO_set_dynlock_create_callback(openssl_dynlock_create);
  CRYPTO_set_dynlock_destroy_callback(openssl_dynlock_destroy);
  CRYPTO_set_dynlock_lock_callback(openssl_lock);
  CRYPTO_set_locking_callback(openssl_lock_function);
  CRYPTO_set_id_callback(openssl_id_function);
#endif
3545
#endif
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  mysql_rwlock_init(key_rwlock_LOCK_sys_init_connect, &LOCK_sys_init_connect);
  mysql_rwlock_init(key_rwlock_LOCK_sys_init_slave, &LOCK_sys_init_slave);
  mysql_rwlock_init(key_rwlock_LOCK_grant, &LOCK_grant);
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  mysql_cond_init(key_COND_thread_count, &COND_thread_count, NULL);
  mysql_cond_init(key_COND_thread_cache, &COND_thread_cache, NULL);
  mysql_cond_init(key_COND_flush_thread_cache, &COND_flush_thread_cache, NULL);
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  mysql_cond_init(key_COND_manager, &COND_manager, NULL);
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#ifdef HAVE_REPLICATION
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3554 3555
  mysql_mutex_init(key_LOCK_rpl_status, &LOCK_rpl_status, MY_MUTEX_INIT_FAST);
  mysql_cond_init(key_COND_rpl_status, &COND_rpl_status, NULL);
3556
#endif
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  mysql_mutex_init(key_LOCK_server_started,
                   &LOCK_server_started, MY_MUTEX_INIT_FAST);
  mysql_cond_init(key_COND_server_started, &COND_server_started, NULL);
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3560
  sp_cache_init();
3561
#ifdef HAVE_EVENT_SCHEDULER
3562
  Events::init_mutexes();
3563
#endif
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  /* Parameter for threads created for connections */
  (void) pthread_attr_init(&connection_attrib);
  (void) pthread_attr_setdetachstate(&connection_attrib,
				     PTHREAD_CREATE_DETACHED);
  pthread_attr_setscope(&connection_attrib, PTHREAD_SCOPE_SYSTEM);
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  if (pthread_key_create(&THR_THD,NULL) ||
      pthread_key_create(&THR_MALLOC,NULL))
  {
    sql_print_error("Can't create thread-keys");
    return 1;
  }
  return 0;
}

3579

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3580
#if defined(HAVE_OPENSSL) && !defined(HAVE_YASSL)
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static unsigned long openssl_id_function()
{ 
  return (unsigned long) pthread_self();
} 


static openssl_lock_t *openssl_dynlock_create(const char *file, int line)
{ 
  openssl_lock_t *lock= new openssl_lock_t;
3590
  mysql_rwlock_init(key_rwlock_openssl, &lock->lock);
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  return lock;
}


static void openssl_dynlock_destroy(openssl_lock_t *lock, const char *file, 
				    int line)
{
3598
  mysql_rwlock_destroy(&lock->lock);
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  delete lock;
}


static void openssl_lock_function(int mode, int n, const char *file, int line)
{
  if (n < 0 || n > CRYPTO_num_locks())
  {
    /* Lock number out of bounds. */
    sql_print_error("Fatal: OpenSSL interface problem (n = %d)", n);
    abort();
  }
  openssl_lock(mode, &openssl_stdlocks[n], file, line);
}


static void openssl_lock(int mode, openssl_lock_t *lock, const char *file, 
			 int line)
{
  int err;
  char const *what;

  switch (mode) {
  case CRYPTO_LOCK|CRYPTO_READ:
    what = "read lock";
3624
    err= mysql_rwlock_rdlock(&lock->lock);
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    break;
  case CRYPTO_LOCK|CRYPTO_WRITE:
    what = "write lock";
3628
    err= mysql_rwlock_wrlock(&lock->lock);
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    break;
  case CRYPTO_UNLOCK|CRYPTO_READ:
  case CRYPTO_UNLOCK|CRYPTO_WRITE:
    what = "unlock";
3633
    err= mysql_rwlock_unlock(&lock->lock);
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    break;
  default:
    /* Unknown locking mode. */
    sql_print_error("Fatal: OpenSSL interface problem (mode=0x%x)", mode);
    abort();
  }
  if (err) 
  {
3642
    sql_print_error("Fatal: can't %s OpenSSL lock", what);
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    abort();
  }
}
#endif /* HAVE_OPENSSL */


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static void init_ssl()
{
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3651
#ifdef HAVE_OPENSSL
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3652
#ifndef EMBEDDED_LIBRARY
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  if (opt_use_ssl)
  {
3655 3656
    enum enum_ssl_init_error error= SSL_INITERR_NOERROR;

3657 3658 3659
    /* having ssl_acceptor_fd != 0 signals the use of SSL */
    ssl_acceptor_fd= new_VioSSLAcceptorFd(opt_ssl_key, opt_ssl_cert,
					  opt_ssl_ca, opt_ssl_capath,
3660
					  opt_ssl_cipher, &error);
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3661
    DBUG_PRINT("info",("ssl_acceptor_fd: 0x%lx", (long) ssl_acceptor_fd));
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3662
    if (!ssl_acceptor_fd)
3663
    {
3664
      sql_print_warning("Failed to setup SSL");
3665
      sql_print_warning("SSL error: %s", sslGetErrString(error));
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      opt_use_ssl = 0;
3667
      have_ssl= SHOW_OPTION_DISABLED;
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    }
  }
  else
  {
3672
    have_ssl= SHOW_OPTION_DISABLED;
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3673
  }
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#else
  have_ssl= SHOW_OPTION_DISABLED;
#endif /* ! EMBEDDED_LIBRARY */
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  if (des_key_file)
    load_des_key_file(des_key_file);
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3679
#endif /* HAVE_OPENSSL */
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}
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3682

3683 3684 3685
static void end_ssl()
{
#ifdef HAVE_OPENSSL
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3686
#ifndef EMBEDDED_LIBRARY
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  if (ssl_acceptor_fd)
  {
    free_vio_ssl_acceptor_fd(ssl_acceptor_fd);
    ssl_acceptor_fd= 0;
  }
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#endif /* ! EMBEDDED_LIBRARY */
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#endif /* HAVE_OPENSSL */
}


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static int init_server_components()
{
3699
  DBUG_ENTER("init_server_components");
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  /*
    We need to call each of these following functions to ensure that
    all things are initialized so that unireg_abort() doesn't fail
  */
3704 3705
  mdl_init();
  if (table_def_init() | hostname_cache_init())
3706
    unireg_abort(1);
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3707

3708
  query_cache_set_min_res_unit(query_cache_min_res_unit);
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  query_cache_init();
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  query_cache_resize(query_cache_size);
3711
  randominit(&sql_rand,(ulong) server_start_time,(ulong) server_start_time/2);
3712
  setup_fpu();
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  init_thr_lock();
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3714
#ifdef HAVE_REPLICATION
3715
  init_slave_list();
3716
#endif
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3717

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  /* Setup logs */

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  /*
    Enable old-fashioned error log, except when the user has requested
    help information. Since the implementation of plugin server
    variables the help output is now written much later.
  */
  if (opt_error_log && !opt_help)
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  {
    if (!log_error_file_ptr[0])
3728
      fn_format(log_error_file, pidfile_name, mysql_data_home, ".err",
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                MY_REPLACE_EXT); /* replace '.<domain>' by '.err', bug#4997 */
    else
      fn_format(log_error_file, log_error_file_ptr, mysql_data_home, ".err",
                MY_UNPACK_FILENAME | MY_SAFE_PATH);
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    /*
      _ptr may have been set to my_disabled_option or "" if no argument was
      passed, but we need to show the real name in SHOW VARIABLES:
    */
    log_error_file_ptr= log_error_file;
3738
    if (!log_error_file[0])
3739
      opt_error_log= 0;                         // Too long file name
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    else
    {
3742
      my_bool res;
3743
#ifndef EMBEDDED_LIBRARY
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      res= reopen_fstreams(log_error_file, stdout, stderr);
#else
      res= reopen_fstreams(log_error_file, NULL, stderr);
3747
#endif
3748 3749 3750

      if (!res)
        setbuf(stderr, NULL);
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    }
  }

3754 3755
  proc_info_hook= set_thd_proc_info;

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#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
  /*
    Parsing the performance schema command line option may have reported
    warnings/information messages.
    Now that the logger is finally available, and redirected
    to the proper file when the --log--error option is used,
    print the buffered messages to the log.
  */
  buffered_logs.print();
  buffered_logs.cleanup();
#endif /* WITH_PERFSCHEMA_STORAGE_ENGINE */

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  if (xid_cache_init())
  {
    sql_print_error("Out of memory");
    unireg_abort(1);
  }

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  /*
    initialize delegates for extension observers, errors have already
    been reported in the function
  */
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  if (delegates_init())
    unireg_abort(1);

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3781
  /* need to configure logging before initializing storage engines */
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3782
  if (opt_log_slave_updates && !opt_bin_log)
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  {
3784
    sql_print_warning("You need to use --log-bin to make "
3785
                    "--log-slave-updates work.");
3786
  }
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  if (!opt_bin_log && binlog_format_used)
    sql_print_warning("You need to use --log-bin to make "
                      "--binlog-format work.");
3790

3791
  /* Check that we have not let the format to unspecified at this point */
3792
  DBUG_ASSERT((uint)global_system_variables.binlog_format <=
3793
              array_elements(binlog_format_names)-1);
3794

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#ifdef HAVE_REPLICATION
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  if (opt_log_slave_updates && replicate_same_server_id)
  {
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    if (opt_bin_log)
    {
      sql_print_error("using --replicate-same-server-id in conjunction with \
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--log-slave-updates is impossible, it would lead to infinite loops in this \
server.");
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      unireg_abort(1);
    }
    else
      sql_print_warning("using --replicate-same-server-id in conjunction with \
--log-slave-updates would lead to infinite loops in this server. However this \
will be ignored as the --log-bin option is not defined.");
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  }
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#endif
3811

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  if (opt_bin_log)
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  {
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    /* Reports an error and aborts, if the --log-bin's path 
       is a directory.*/
    if (opt_bin_logname && 
        opt_bin_logname[strlen(opt_bin_logname) - 1] == FN_LIBCHAR)
    {
      sql_print_error("Path '%s' is a directory name, please specify \
a file name for --log-bin option", opt_bin_logname);
      unireg_abort(1);
    }

    /* Reports an error and aborts, if the --log-bin-index's path 
       is a directory.*/
    if (opt_binlog_index_name && 
        opt_binlog_index_name[strlen(opt_binlog_index_name) - 1] 
        == FN_LIBCHAR)
    {
      sql_print_error("Path '%s' is a directory name, please specify \
a file name for --log-bin-index option", opt_binlog_index_name);
      unireg_abort(1);
    }

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3835 3836 3837 3838
    char buf[FN_REFLEN];
    const char *ln;
    ln= mysql_bin_log.generate_name(opt_bin_logname, "-bin", 1, buf);
    if (!opt_bin_logname && !opt_binlog_index_name)
3839 3840
    {
      /*
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3841 3842 3843 3844 3845
        User didn't give us info to name the binlog index file.
        Picking `hostname`-bin.index like did in 4.x, causes replication to
        fail if the hostname is changed later. So, we would like to instead
        require a name. But as we don't want to break many existing setups, we
        only give warning, not error.
3846
      */
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3847 3848 3849 3850 3851
      sql_print_warning("No argument was provided to --log-bin, and "
                        "--log-bin-index was not used; so replication "
                        "may break when this MySQL server acts as a "
                        "master and has his hostname changed!! Please "
                        "use '--log-bin=%s' to avoid this problem.", ln);
3852
    }
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3853
    if (ln == buf)
3854
    {
3855
      my_free(opt_bin_logname);
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      opt_bin_logname=my_strdup(buf, MYF(0));
3857
    }
3858
    if (mysql_bin_log.open_index_file(opt_binlog_index_name, ln, TRUE))
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    {
      unireg_abort(1);
    }
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  }

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  /* call ha_init_key_cache() on all key caches to init them */
  process_key_caches(&ha_init_key_cache);

  /* Allow storage engine to give real error messages */
  if (ha_init_errors())
    DBUG_RETURN(1);

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3871
  if (plugin_init(&remaining_argc, remaining_argv,
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                  (opt_noacl ? PLUGIN_INIT_SKIP_PLUGIN_TABLE : 0) |
                  (opt_help ? PLUGIN_INIT_SKIP_INITIALIZATION : 0)))
  {
    sql_print_error("Failed to initialize plugins.");
    unireg_abort(1);
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  }
3878
  plugins_are_initialized= TRUE;  /* Don't separate from init function */
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3880 3881 3882 3883 3884 3885
  have_csv= plugin_status(STRING_WITH_LEN("csv"),
                          MYSQL_STORAGE_ENGINE_PLUGIN);
  have_ndbcluster= plugin_status(STRING_WITH_LEN("ndbcluster"),
                                 MYSQL_STORAGE_ENGINE_PLUGIN);
  have_partitioning= plugin_status(STRING_WITH_LEN("partition"),
                                   MYSQL_STORAGE_ENGINE_PLUGIN);
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  /* we do want to exit if there are any other unknown options */
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  if (remaining_argc > 1)
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  {
    int ho_error;
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    struct my_option no_opts[]=
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    {
      {0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
    };
    /*
      We need to eat any 'loose' arguments first before we conclude
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      that there are unprocessed options.
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    */
    my_getopt_skip_unknown= 0;
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3900

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3901
    if ((ho_error= handle_options(&remaining_argc, &remaining_argv, no_opts,
3902
                                  mysqld_get_one_option)))
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      unireg_abort(ho_error);
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    /* Add back the program name handle_options removes */
    remaining_argc++;
    remaining_argv--;
3907
    my_getopt_skip_unknown= TRUE;
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3908

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3909
    if (remaining_argc > 1)
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    {
      fprintf(stderr, "%s: Too many arguments (first extra is '%s').\n"
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              "Use --verbose --help to get a list of available options\n",
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3913
              my_progname, remaining_argv[1]);
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      unireg_abort(1);
    }
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  }

3918 3919 3920
  if (opt_help)
    unireg_abort(0);

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3921
  /* if the errmsg.sys is not loaded, terminate to maintain behaviour */
3922 3923
  if (!DEFAULT_ERRMSGS[0][0])
    unireg_abort(1);  
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3924

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3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952
  /* We have to initialize the storage engines before CSV logging */
  if (ha_init())
  {
    sql_print_error("Can't init databases");
    unireg_abort(1);
  }

#ifdef WITH_CSV_STORAGE_ENGINE
  if (opt_bootstrap)
    log_output_options= LOG_FILE;
  else
    logger.init_log_tables();

  if (log_output_options & LOG_NONE)
  {
    /*
      Issue a warining if there were specified additional options to the
      log-output along with NONE. Probably this wasn't what user wanted.
    */
    if ((log_output_options & LOG_NONE) && (log_output_options & ~LOG_NONE))
      sql_print_warning("There were other values specified to "
                        "log-output besides NONE. Disabling slow "
                        "and general logs anyway.");
    logger.set_handlers(LOG_FILE, LOG_NONE, LOG_NONE);
  }
  else
  {
    /* fall back to the log files if tables are not present */
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3953 3954
    LEX_STRING csv_name={C_STRING_WITH_LEN("csv")};
    if (!plugin_is_ready(&csv_name, MYSQL_STORAGE_ENGINE_PLUGIN))
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    {
3956
      /* purecov: begin inspected */
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3957 3958
      sql_print_error("CSV engine is not present, falling back to the "
                      "log files");
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3959
      log_output_options= (log_output_options & ~LOG_TABLE) | LOG_FILE;
3960
      /* purecov: end */
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    }

    logger.set_handlers(LOG_FILE, opt_slow_log ? log_output_options:LOG_NONE,
                        opt_log ? log_output_options:LOG_NONE);
  }
#else
  logger.set_handlers(LOG_FILE, opt_slow_log ? LOG_FILE:LOG_NONE,
                      opt_log ? LOG_FILE:LOG_NONE);
#endif

3971
  /*
3972
    Set the default storage engine
3973
  */
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  LEX_STRING name= { default_storage_engine, strlen(default_storage_engine) };
  plugin_ref plugin;
  handlerton *hton;
  if ((plugin= ha_resolve_by_name(0, &name)))
    hton= plugin_data(plugin, handlerton*);
  else
3980
  {
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    sql_print_error("Unknown/unsupported storage engine: %s",
                    default_storage_engine);
    unireg_abort(1);
  }
  if (!ha_storage_engine_is_enabled(hton))
  {
    if (!opt_bootstrap)
3988
    {
3989 3990
      sql_print_error("Default storage engine (%s) is not available",
                      default_storage_engine);
3991 3992
      unireg_abort(1);
    }
3993 3994 3995 3996 3997 3998 3999 4000 4001 4002
    DBUG_ASSERT(global_system_variables.table_plugin);
  }
  else
  {
    /*
      Need to unlock as global_system_variables.table_plugin
      was acquired during plugin_init()
    */
    plugin_unlock(0, global_system_variables.table_plugin);
    global_system_variables.table_plugin= plugin;
4003 4004
  }

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  tc_log= (total_ha_2pc > 1 ? (opt_bin_log  ?
                               (TC_LOG *) &mysql_bin_log :
                               (TC_LOG *) &tc_log_mmap) :
           (TC_LOG *) &tc_log_dummy);
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4009

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4010
  if (tc_log->open(opt_bin_log ? opt_bin_logname : opt_tc_log_file))
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4011 4012 4013 4014 4015
  {
    sql_print_error("Can't init tc log");
    unireg_abort(1);
  }

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4016 4017 4018 4019 4020
  if (ha_recover(0))
  {
    unireg_abort(1);
  }

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4021
  if (opt_bin_log && mysql_bin_log.open(opt_bin_logname, LOG_BIN, 0,
4022
                                        WRITE_CACHE, 0, max_binlog_size, 0, TRUE))
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4023
    unireg_abort(1);
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4024 4025 4026

#ifdef HAVE_REPLICATION
  if (opt_bin_log && expire_logs_days)
4027
  {
4028
    time_t purge_time= server_start_time - expire_logs_days*24*60*60;
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4029 4030
    if (purge_time >= 0)
      mysql_bin_log.purge_logs_before_date(purge_time);
4031
  }
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#endif

  if (opt_myisam_log)
    (void) mi_log(1);
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4036

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4037
#if defined(HAVE_MLOCKALL) && defined(MCL_CURRENT) && !defined(EMBEDDED_LIBRARY)
4038
  if (locked_in_memory && !getuid())
4039
  {
4040
    if (setreuid((uid_t)-1, 0) == -1)
4041
    {                        // this should never happen
4042
      sql_perror("setreuid");
4043 4044
      unireg_abort(1);
    }
4045 4046
    if (mlockall(MCL_CURRENT))
    {
4047
      if (global_system_variables.log_warnings)
4048
	sql_print_warning("Failed to lock memory. Errno: %d\n",errno);
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      locked_in_memory= 0;
4050
    }
4051 4052
    if (user_info)
      set_user(mysqld_user, user_info);
4053
  }
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  else
4055
#endif
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4056
    locked_in_memory=0;
4057

4058
  ft_init_stopwords();
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4059

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4060
  init_max_user_conn();
4061
  init_update_queries();
4062
  DBUG_RETURN(0);
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}
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4064

4065

4066
#ifndef EMBEDDED_LIBRARY
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4067

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4068 4069 4070
static void create_shutdown_thread()
{
#ifdef __WIN__
4071 4072
  hEventShutdown=CreateEvent(0, FALSE, FALSE, shutdown_event_name);
  pthread_t hThread;
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4073 4074
  if (mysql_thread_create(key_thread_handle_shutdown,
                          &hThread, &connection_attrib, handle_shutdown, 0))
4075
    sql_print_warning("Can't create thread to handle shutdown requests");
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4076

4077 4078
  // On "Stop Service" we have to do regular shutdown
  Service.SetShutdownEvent(hEventShutdown);
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4079
#endif /* __WIN__ */
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4080
}
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4081

4082
#endif /* EMBEDDED_LIBRARY */
4083 4084


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4085
#if (defined(_WIN32) || defined(HAVE_SMEM)) && !defined(EMBEDDED_LIBRARY)
4086
static void handle_connections_methods()
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4087
{
4088 4089
  pthread_t hThread;
  DBUG_ENTER("handle_connections_methods");
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4090
  if (hPipe == INVALID_HANDLE_VALUE &&
4091 4092
      (!have_tcpip || opt_disable_networking) &&
      !opt_enable_shared_memory)
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4093
  {
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4094
    sql_print_error("TCP/IP, --shared-memory, or --named-pipe should be configured on NT OS");
4095
    unireg_abort(1);				// Will not return
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4096
  }
4097

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4098 4099
  mysql_mutex_lock(&LOCK_thread_count);
  mysql_cond_init(key_COND_handler_count, &COND_handler_count, NULL);
4100 4101
  handler_count=0;
  if (hPipe != INVALID_HANDLE_VALUE)
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4102
  {
4103
    handler_count++;
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4104 4105 4106
    if (mysql_thread_create(key_thread_handle_con_namedpipes,
                            &hThread, &connection_attrib,
                            handle_connections_namedpipes, 0))
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4107
    {
4108
      sql_print_warning("Can't create thread to handle named pipes");
4109 4110 4111 4112 4113 4114
      handler_count--;
    }
  }
  if (have_tcpip && !opt_disable_networking)
  {
    handler_count++;
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4115 4116 4117
    if (mysql_thread_create(key_thread_handle_con_sockets,
                            &hThread, &connection_attrib,
                            handle_connections_sockets_thread, 0))
4118
    {
4119
      sql_print_warning("Can't create thread to handle TCP/IP");
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      handler_count--;
    }
  }
#ifdef HAVE_SMEM
  if (opt_enable_shared_memory)
  {
    handler_count++;
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4127 4128 4129
    if (mysql_thread_create(key_thread_handle_con_sharedmem,
                            &hThread, &connection_attrib,
                            handle_connections_shared_memory, 0))
4130
    {
4131
      sql_print_warning("Can't create thread to handle shared memory");
4132
      handler_count--;
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    }
  }
4135
#endif 
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4136

4137
  while (handler_count > 0)
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4138 4139
    mysql_cond_wait(&COND_handler_count, &LOCK_thread_count);
  mysql_mutex_unlock(&LOCK_thread_count);
4140 4141
  DBUG_VOID_RETURN;
}
4142 4143 4144

void decrement_handler_count()
{
Marc Alff's avatar
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4145
  mysql_mutex_lock(&LOCK_thread_count);
4146
  handler_count--;
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  mysql_cond_signal(&COND_handler_count);
  mysql_mutex_unlock(&LOCK_thread_count);
4149
  my_thread_end();
4150 4151 4152
}
#else
#define decrement_handler_count()
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4153
#endif /* defined(_WIN32) || defined(HAVE_SMEM) */
4154 4155


4156
#ifndef EMBEDDED_LIBRARY
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#ifndef DBUG_OFF
/*
  Debugging helper function to keep the locale database
  (see sql_locale.cc) and max_month_name_length and
  max_day_name_length variable values in consistent state.
*/
static void test_lc_time_sz()
{
  DBUG_ENTER("test_lc_time_sz");
  for (MY_LOCALE **loc= my_locales; *loc; loc++)
  {
    uint max_month_len= 0;
    uint max_day_len = 0;
    for (const char **month= (*loc)->month_names->type_names; *month; month++)
    {
      set_if_bigger(max_month_len,
                    my_numchars_mb(&my_charset_utf8_general_ci,
                                   *month, *month + strlen(*month)));
    }
    for (const char **day= (*loc)->day_names->type_names; *day; day++)
    {
      set_if_bigger(max_day_len,
                    my_numchars_mb(&my_charset_utf8_general_ci,
                                   *day, *day + strlen(*day)));
    }
    if ((*loc)->max_month_name_length != max_month_len ||
        (*loc)->max_day_name_length != max_day_len)
    {
      DBUG_PRINT("Wrong max day name(or month name) length for locale:",
                 ("%s", (*loc)->name));
      DBUG_ASSERT(0);
    }
  }
  DBUG_VOID_RETURN;
}
#endif//DBUG_OFF

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#ifdef __WIN__
int win_main(int argc, char **argv)
#else
4197
int mysqld_main(int argc, char **argv)
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4198 4199
#endif
{
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  /*
    Perform basic thread library and malloc initialization,
    to be able to read defaults files and parse options.
  */
  my_progname= argv[0];
  if (my_basic_init())
  {
    fprintf(stderr, "my_basic_init() failed.");
    return 1;
  }

  orig_argc= argc;
  orig_argv= argv;
  if (load_defaults(MYSQL_CONFIG_NAME, load_default_groups, &argc, &argv))
    return 1;
  defaults_argc= argc;
  defaults_argv= argv;
  remaining_argc= argc;
  remaining_argv= argv;

  /* Must be initialized early for comparison of options name */
  system_charset_info= &my_charset_utf8_general_ci;

  sys_var_init();

#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
  /*
    The performance schema needs to be initialized as early as possible,
    before to-be-instrumented objects of the server are initialized.
  */
  int ho_error;
  DYNAMIC_ARRAY all_early_options;

  my_getopt_register_get_addr(NULL);
  /* Skip unknown options so that they may be processed later */
  my_getopt_skip_unknown= TRUE;

  /* prepare all_early_options array */
  my_init_dynamic_array(&all_early_options, sizeof(my_option), 100, 25);
  sys_var_add_options(&all_early_options, sys_var::PARSE_EARLY);
  add_terminator(&all_early_options);

  /*
    Logs generated while parsing the command line
    options are buffered and printed later.
  */
  buffered_logs.init();
  my_getopt_error_reporter= buffered_option_error_reporter;

  ho_error= handle_options(&remaining_argc, &remaining_argv,
                           (my_option*)(all_early_options.buffer), NULL);
  delete_dynamic(&all_early_options);
  if (ho_error == 0)
  {
    /* Add back the program name handle_options removes */
    remaining_argc++;
    remaining_argv--;
    if (pfs_param.m_enabled)
    {
      PSI_hook= initialize_performance_schema(&pfs_param);
      if (PSI_hook == NULL)
      {
        pfs_param.m_enabled= false;
        buffered_logs.buffer(WARNING_LEVEL,
                             "Performance schema disabled (reason: init failed).");
      }
    }
  }
#else
  /*
    Other provider of the instrumentation interface should
    initialize PSI_hook here:
    - HAVE_PSI_INTERFACE is for the instrumentation interface
    - WITH_PERFSCHEMA_STORAGE_ENGINE is for one implementation
      of the interface,
    but there could be alternate implementations, which is why
    these two defines are kept separate.
  */
#endif /* WITH_PERFSCHEMA_STORAGE_ENGINE */

#ifdef HAVE_PSI_INTERFACE
  /*
    Obtain the current performance schema instrumentation interface,
    if available.
  */
  if (PSI_hook)
    PSI_server= (PSI*) PSI_hook->get_interface(PSI_CURRENT_VERSION);

  if (PSI_server)
  {
    /*
      Now that we have parsed the command line arguments, and have initialized
      the performance schema itself, the next step is to register all the
      server instruments.
    */
    init_server_psi_keys();
    /* Instrument the main thread */
    PSI_thread *psi= PSI_server->new_thread(key_thread_main, NULL, 0);
    if (psi)
      PSI_server->set_thread(psi);

    /*
      Now that some instrumentation is in place,
      recreate objects which were initialised early,
      so that they are instrumented as well.
    */
    my_thread_basic_global_reinit();
  }
#endif /* HAVE_PSI_INTERFACE */

  my_init();                                   // init my_sys library & pthreads
  init_error_log_mutex();
4312

4313 4314 4315 4316 4317 4318 4319
  /* Set signal used to kill MySQL */
#if defined(SIGUSR2)
  thr_kill_signal= thd_lib_detected == THD_LIB_LT ? SIGINT : SIGUSR2;
#else
  thr_kill_signal= SIGINT;
#endif

4320 4321 4322
  /* Initialize audit interface globals. Audit plugins are inited later. */
  mysql_audit_initialize();

4323 4324 4325 4326 4327 4328
  /*
    Perform basic logger initialization logger. Should be called after
    MY_INIT, as it initializes mutexes. Log tables are inited later.
  */
  logger.init_base();

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4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350
#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
  if (ho_error)
  {
    /*
      Parsing command line option failed,
      Since we don't have a workable remaining_argc/remaining_argv
      to continue the server initialization, this is as far as this
      code can go.
      This is the best effort to log meaningful messages:
      - messages will be printed to stderr, which is not redirected yet,
      - messages will be printed in the NT event log, for windows.
    */
    buffered_logs.print();
    buffered_logs.cleanup();
    /*
      Not enough initializations for unireg_abort()
      Using exit() for windows.
    */
    exit (ho_error);
  }
#endif /* WITH_PERFSCHEMA_STORAGE_ENGINE */

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#ifdef _CUSTOMSTARTUPCONFIG_
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  if (_cust_check_startup())
  {
    / * _cust_check_startup will report startup failure error * /
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4355
    exit(1);
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  }
#endif
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4359
  if (init_common_variables())
4360
    unireg_abort(1);				// Will do exit
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4361 4362

  init_signals();
4363
#if defined(__ia64__) || defined(__ia64)
4364 4365 4366 4367
  /*
    Peculiar things with ia64 platforms - it seems we only have half the
    stack size in reality, so we have to double it here
  */
4368
  pthread_attr_setstacksize(&connection_attrib,my_thread_stack_size*2);
4369
#else
4370
  pthread_attr_setstacksize(&connection_attrib,my_thread_stack_size);
4371
#endif
4372 4373 4374 4375 4376
#ifdef HAVE_PTHREAD_ATTR_GETSTACKSIZE
  {
    /* Retrieve used stack size;  Needed for checking stack overflows */
    size_t stack_size= 0;
    pthread_attr_getstacksize(&connection_attrib, &stack_size);
4377 4378 4379
#if defined(__ia64__) || defined(__ia64)
    stack_size/= 2;
#endif
4380
    /* We must check if stack_size = 0 as Solaris 2.9 can return 0 here */
4381
    if (stack_size && stack_size < my_thread_stack_size)
4382 4383
    {
      if (global_system_variables.log_warnings)
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	sql_print_warning("Asked for %lu thread stack, but got %ld",
4385
			  my_thread_stack_size, (long) stack_size);
4386
#if defined(__ia64__) || defined(__ia64)
4387
      my_thread_stack_size= stack_size*2;
4388
#else
4389
      my_thread_stack_size= stack_size;
4390
#endif
4391 4392 4393
    }
  }
#endif
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4394

4395
  (void) thr_setconcurrency(concurrency);	// 10 by default
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4397 4398
  select_thread=pthread_self();
  select_thread_in_use=1;
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4399 4400 4401 4402 4403 4404

#ifdef HAVE_LIBWRAP
  libwrapName= my_progname+dirname_length(my_progname);
  openlog(libwrapName, LOG_PID, LOG_AUTH);
#endif

4405 4406 4407 4408
#ifndef DBUG_OFF
  test_lc_time_sz();
#endif

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  /*
    We have enough space for fiddling with the argv, continue
  */
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4412
  check_data_home(mysql_real_data_home);
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  if (my_setwd(mysql_real_data_home,MYF(MY_WME)) && !opt_help)
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    unireg_abort(1);				/* purecov: inspected */
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  if ((user_info= check_user(mysqld_user)))
  {
#if defined(HAVE_MLOCKALL) && defined(MCL_CURRENT)
    if (locked_in_memory) // getuid() == 0 here
      set_effective_user(user_info);
    else
#endif
      set_user(mysqld_user, user_info);
  }

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  if (opt_bin_log && !server_id)
  {
4428
    server_id= 1;
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#ifdef EXTRA_DEBUG
4430 4431 4432 4433
    sql_print_warning("You have enabled the binary log, but you haven't set "
                      "server-id to a non-zero value: we force server id to 1; "
                      "updates will be logged to the binary log, but "
                      "connections from slaves will not be accepted.");
4434
#endif
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  }

  if (init_server_components())
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    unireg_abort(1);
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4440
  init_ssl();
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  network_init();

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#ifdef __WIN__
  if (!opt_console)
  {
4446 4447
    if (reopen_fstreams(log_error_file, stdout, stderr))
      unireg_abort(1);
4448
    setbuf(stderr, NULL);
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    FreeConsole();				// Remove window
4450
  }
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#endif

4453 4454 4455 4456 4457 4458
  /*
   Initialize my_str_malloc() and my_str_free()
  */
  my_str_malloc= &my_str_malloc_mysqld;
  my_str_free= &my_str_free_mysqld;

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  /*
    init signals & alarm
    After this we can't quit by a simple unireg_abort
  */
4463
  error_handler_hook= my_message_sql;
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  start_signal_handler();				// Creates pidfile
4465

4466
  if (mysql_rm_tmp_tables() || acl_init(opt_noacl) ||
4467
      my_tz_init((THD *)0, default_tz_name, opt_bootstrap))
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  {
    abort_loop=1;
    select_thread_in_use=0;
4471

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4472
    (void) pthread_kill(signal_thread, MYSQL_KILL_SIGNAL);
4473

4474

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    if (!opt_bootstrap)
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4476
      mysql_file_delete(key_file_pid, pidfile_name, MYF(MY_WME)); // Not needed anymore
4477

4478
    if (unix_sock != INVALID_SOCKET)
4479
      unlink(mysqld_unix_port);
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    exit(1);
  }
4482

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4483
  if (!opt_noacl)
4484
    (void) grant_init();
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4485

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  if (!opt_bootstrap)
    servers_init(0);

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4489
  if (!opt_noacl)
4490 4491
  {
#ifdef HAVE_DLOPEN
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    udf_init();
#endif
4494
  }
4495

4496
  init_status_vars();
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4497 4498
  if (opt_bootstrap) /* If running with bootstrap, do not start replication. */
    opt_skip_slave_start= 1;
4499 4500

  binlog_unsafe_map_init();
4501 4502 4503 4504 4505 4506 4507 4508 4509 4510
  /*
    init_slave() must be called after the thread keys are created.
    Some parts of the code (e.g. SHOW STATUS LIKE 'slave_running' and other
    places) assume that active_mi != 0, so let's fail if it's 0 (out of
    memory); a message has already been printed.
  */
  if (init_slave() && !active_mi)
  {
    unireg_abort(1);
  }
4511

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4512 4513
#ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
  initialize_performance_schema_acl(opt_bootstrap);
4514 4515 4516 4517 4518 4519 4520 4521
  /*
    Do not check the structure of the performance schema tables
    during bootstrap:
    - the tables are not supposed to exist yet, bootstrap will create them
    - a check would print spurious error messages
  */
  if (! opt_bootstrap)
    check_performance_schema();
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4522 4523 4524 4525
#endif

  initialize_information_schema_acl();

4526 4527 4528 4529 4530
  execute_ddl_log_recovery();

  if (Events::init(opt_noacl || opt_bootstrap))
    unireg_abort(1);

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4531 4532
  if (opt_bootstrap)
  {
4533
    select_thread_in_use= 0;                    // Allow 'kill' to work
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4534
    bootstrap(mysql_stdin);
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4535
    unireg_abort(bootstrap_error ? 1 : 0);
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  }
4537
  if (opt_init_file && *opt_init_file)
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  {
    if (read_init_file(opt_init_file))
      unireg_abort(1);
  }
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4542

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4543
  create_shutdown_thread();
4544
  start_handle_manager();
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4545

4546
  sql_print_information(ER_DEFAULT(ER_STARTUP),my_progname,server_version,
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4547
                        ((unix_sock == INVALID_SOCKET) ? (char*) ""
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4548
                                                       : mysqld_unix_port),
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4549
                         mysqld_port,
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4550
                         MYSQL_COMPILATION_COMMENT);
4551 4552 4553
#if defined(_WIN32) && !defined(EMBEDDED_LIBRARY)
  Service.SetRunning();
#endif
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4554

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4555 4556

  /* Signal threads waiting for server to be started */
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4557
  mysql_mutex_lock(&LOCK_server_started);
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4558
  mysqld_server_started= 1;
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4559 4560
  mysql_cond_signal(&COND_server_started);
  mysql_mutex_unlock(&LOCK_server_started);
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4561

4562
#if defined(_WIN32) || defined(HAVE_SMEM)
4563
  handle_connections_methods();
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4564
#else
4565 4566
  handle_connections_sockets();
#endif /* _WIN32 || HAVE_SMEM */
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4567 4568

  /* (void) pthread_attr_destroy(&connection_attrib); */
4569
  
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4570 4571 4572
  DBUG_PRINT("quit",("Exiting main thread"));

#ifndef __WIN__
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4573
#ifdef EXTRA_DEBUG2
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4574 4575
  sql_print_error("Before Lock_thread_count");
#endif
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4576
  mysql_mutex_lock(&LOCK_thread_count);
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4577
  DBUG_PRINT("quit", ("Got thread_count mutex"));
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4578
  select_thread_in_use=0;			// For close_connections
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4579 4580
  mysql_mutex_unlock(&LOCK_thread_count);
  mysql_cond_broadcast(&COND_thread_count);
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4581
#ifdef EXTRA_DEBUG2
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4582 4583
  sql_print_error("After lock_thread_count");
#endif
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4584
#endif /* __WIN__ */
4585

4586 4587 4588 4589 4590 4591 4592 4593 4594
#ifdef HAVE_PSI_INTERFACE
  /*
    Disable the main thread instrumentation,
    to avoid recording events during the shutdown.
  */
  if (PSI_server)
    PSI_server->delete_current_thread();
#endif

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4595
  /* Wait until cleanup is done */
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4596
  mysql_mutex_lock(&LOCK_thread_count);
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4597
  while (!ready_to_exit)
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4598 4599
    mysql_cond_wait(&COND_thread_count, &LOCK_thread_count);
  mysql_mutex_unlock(&LOCK_thread_count);
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4600 4601

#if defined(__WIN__) && !defined(EMBEDDED_LIBRARY)
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4602 4603 4604 4605
  if (Service.IsNT() && start_mode)
    Service.Stop();
  else
  {
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4606
    Service.SetShutdownEvent(0);
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4607 4608 4609
    if (hEventShutdown)
      CloseHandle(hEventShutdown);
  }
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4610
#endif
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4611
  clean_up(1);
4612
  mysqld_exit(0);
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4613 4614
}

4615
#endif /* !EMBEDDED_LIBRARY */
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4616

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SCRUM  
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4617

4618 4619 4620 4621 4622
/****************************************************************************
  Main and thread entry function for Win32
  (all this is needed only to run mysqld as a service on WinNT)
****************************************************************************/

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4623
#if defined(__WIN__) && !defined(EMBEDDED_LIBRARY)
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4624 4625
int mysql_service(void *p)
{
4626 4627 4628 4629
  if (use_opt_args)
    win_main(opt_argc, opt_argv);
  else
    win_main(Service.my_argc, Service.my_argv);
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4630 4631 4632
  return 0;
}

4633 4634 4635 4636 4637 4638 4639 4640

/* Quote string if it contains space, else copy */

static char *add_quoted_string(char *to, const char *from, char *to_end)
{
  uint length= (uint) (to_end-to);

  if (!strchr(from, ' '))
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4641 4642
    return strmake(to, from, length-1);
  return strxnmov(to, length-1, "\"", from, "\"", NullS);
4643 4644 4645
}


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4646 4647
/**
  Handle basic handling of services, like installation and removal.
4648

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4649 4650 4651 4652 4653 4654 4655
  @param argv	   	        Pointer to argument list
  @param servicename		Internal name of service
  @param displayname		Display name of service (in taskbar ?)
  @param file_path		Path to this program
  @param startup_option	Startup option to mysqld

  @retval
4656
    0		option handled
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4657
  @retval
4658
    1		Could not handle option
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4659
*/
4660

4661 4662 4663 4664 4665
static bool
default_service_handling(char **argv,
			 const char *servicename,
			 const char *displayname,
			 const char *file_path,
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4666 4667
			 const char *extra_opt,
			 const char *account_name)
4668
{
4669
  char path_and_service[FN_REFLEN+FN_REFLEN+32], *pos, *end;
4670
  const char *opt_delim;
4671
  end= path_and_service + sizeof(path_and_service)-3;
4672 4673 4674 4675 4676

  /* We have to quote filename if it contains spaces */
  pos= add_quoted_string(path_and_service, file_path, end);
  if (*extra_opt)
  {
4677 4678 4679 4680 4681
    /* 
     Add option after file_path. There will be zero or one extra option.  It's 
     assumed to be --defaults-file=file but isn't checked.  The variable (not
     the option name) should be quoted if it contains a string.  
    */
4682
    *pos++= ' ';
4683 4684 4685
    if (opt_delim= strchr(extra_opt, '='))
    {
      size_t length= ++opt_delim - extra_opt;
4686
      pos= strnmov(pos, extra_opt, length);
4687 4688 4689 4690 4691
    }
    else
      opt_delim= extra_opt;
    
    pos= add_quoted_string(pos, opt_delim, end);
4692
  }
4693 4694
  /* We must have servicename last */
  *pos++= ' ';
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4695
  (void) add_quoted_string(pos, servicename, end);
4696

4697 4698
  if (Service.got_service_option(argv, "install"))
  {
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4699 4700
    Service.Install(1, servicename, displayname, path_and_service,
                    account_name);
4701 4702 4703 4704
    return 0;
  }
  if (Service.got_service_option(argv, "install-manual"))
  {
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4705 4706
    Service.Install(0, servicename, displayname, path_and_service,
                    account_name);
4707 4708 4709 4710 4711 4712 4713 4714 4715 4716 4717
    return 0;
  }
  if (Service.got_service_option(argv, "remove"))
  {
    Service.Remove(servicename);
    return 0;
  }
  return 1;
}


4718
int mysqld_main(int argc, char **argv)
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4719
{
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4720 4721 4722 4723
  /*
    When several instances are running on the same machine, we
    need to have an  unique  named  hEventShudown  through the
    application PID e.g.: MySQLShutdown1890; MySQLShutdown2342
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4724
  */
4725
  int10_to_str((int) GetCurrentProcessId(),strmov(shutdown_event_name,
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4726 4727
                                                  "MySQLShutdown"), 10);

4728 4729 4730
  /* Must be initialized early for comparison of service name */
  system_charset_info= &my_charset_utf8_general_ci;

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4731
  if (Service.GetOS())	/* true NT family */
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4732
  {
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4733
    char file_path[FN_REFLEN];
4734
    my_path(file_path, argv[0], "");		      /* Find name in path */
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4735 4736
    fn_format(file_path,argv[0],file_path,"",
	      MY_REPLACE_DIR | MY_UNPACK_FILENAME | MY_RESOLVE_SYMLINKS);
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4737

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4738
    if (argc == 2)
4739
    {
4740
      if (!default_service_handling(argv, MYSQL_SERVICENAME, MYSQL_SERVICENAME,
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Merge  
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4741
				   file_path, "", NULL))
4742
	return 0;
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4743
      if (Service.IsService(argv[1]))        /* Start an optional service */
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4744
      {
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4745 4746 4747 4748 4749 4750
	/*
	  Only add the service name to the groups read from the config file
	  if it's not "MySQL". (The default service name should be 'mysqld'
	  but we started a bad tradition by calling it MySQL from the start
	  and we are now stuck with it.
	*/
4751
	if (my_strcasecmp(system_charset_info, argv[1],"mysql"))
4752
	  load_default_groups[load_default_groups_sz-2]= argv[1];
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4753
        start_mode= 1;
4754
        Service.Init(argv[1], mysql_service);
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4755 4756 4757 4758
        return 0;
      }
    }
    else if (argc == 3) /* install or remove any optional service */
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4759
    {
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4760 4761
      if (!default_service_handling(argv, argv[2], argv[2], file_path, "",
                                    NULL))
4762 4763
	return 0;
      if (Service.IsService(argv[2]))
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4764
      {
4765 4766 4767 4768
	/*
	  mysqld was started as
	  mysqld --defaults-file=my_path\my.ini service-name
	*/
4769
	use_opt_args=1;
4770
	opt_argc= 2;				// Skip service-name
4771 4772
	opt_argv=argv;
	start_mode= 1;
4773
	if (my_strcasecmp(system_charset_info, argv[2],"mysql"))
4774
	  load_default_groups[load_default_groups_sz-2]= argv[2];
4775
	Service.Init(argv[2], mysql_service);
4776
	return 0;
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4777 4778
      }
    }
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4779
    else if (argc == 4 || argc == 5)
4780 4781
    {
      /*
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4782 4783 4784 4785 4786
        This may seem strange, because we handle --local-service while
        preserving 4.1's behavior of allowing any one other argument that is
        passed to the service on startup. (The assumption is that this is
        --defaults-file=file, but that was not enforced in 4.1, so we don't
        enforce it here.)
4787
      */
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4788 4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799 4800 4801 4802
      const char *extra_opt= NullS;
      const char *account_name = NullS;
      int index;
      for (index = 3; index < argc; index++)
      {
        if (!strcmp(argv[index], "--local-service"))
          account_name= "NT AUTHORITY\\LocalService";
        else
          extra_opt= argv[index];
      }

      if (argc == 4 || account_name)
        if (!default_service_handling(argv, argv[2], argv[2], file_path,
                                      extra_opt, account_name))
          return 0;
4803
    }
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4804
    else if (argc == 1 && Service.IsService(MYSQL_SERVICENAME))
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4805
    {
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      /* start the default service */
      start_mode= 1;
      Service.Init(MYSQL_SERVICENAME, mysql_service);
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      return 0;
    }
  }
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  /* Start as standalone server */
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  Service.my_argc=argc;
  Service.my_argv=argv;
  mysql_service(NULL);
  return 0;
}
#endif


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4821
/**
4822 4823 4824
  Execute all commands from a file. Used by the mysql_install_db script to
  create MySQL privilege tables without having to start a full MySQL server.
*/
4825

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4826
static void bootstrap(MYSQL_FILE *file)
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4827
{
4828
  DBUG_ENTER("bootstrap");
4829

4830
  THD *thd= new THD;
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4831
  thd->bootstrap=1;
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4832
  my_net_init(&thd->net,(st_vio*) 0);
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4833
  thd->max_client_packet_length= thd->net.max_packet;
4834
  thd->security_ctx->master_access= ~(ulong)0;
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4835
  thd->thread_id= thd->variables.pseudo_thread_id= thread_id++;
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4836
  thread_count++;
4837
  in_bootstrap= TRUE;
4838 4839

  bootstrap_file=file;
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4840
#ifndef EMBEDDED_LIBRARY			// TODO:  Enable this
Marc Alff's avatar
Marc Alff committed
4841 4842 4843
  if (mysql_thread_create(key_thread_bootstrap,
                          &thd->real_id, &connection_attrib, handle_bootstrap,
                          (void*) thd))
4844
  {
4845
    sql_print_warning("Can't create thread to handle bootstrap");
unknown's avatar
Merge  
unknown committed
4846 4847
    bootstrap_error=-1;
    DBUG_VOID_RETURN;
4848 4849
  }
  /* Wait for thread to die */
Marc Alff's avatar
Marc Alff committed
4850
  mysql_mutex_lock(&LOCK_thread_count);
4851
  while (in_bootstrap)
4852
  {
Marc Alff's avatar
Marc Alff committed
4853
    mysql_cond_wait(&COND_thread_count, &LOCK_thread_count);
4854 4855
    DBUG_PRINT("quit",("One thread died (count=%u)",thread_count));
  }
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4856
  mysql_mutex_unlock(&LOCK_thread_count);
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4857 4858
#else
  thd->mysql= 0;
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4859
  do_handle_bootstrap(thd);
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#endif

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Merge  
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4862
  DBUG_VOID_RETURN;
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}

4865

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4866 4867
static bool read_init_file(char *file_name)
{
Marc Alff's avatar
Marc Alff committed
4868
  MYSQL_FILE *file;
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4869 4870
  DBUG_ENTER("read_init_file");
  DBUG_PRINT("enter",("name: %s",file_name));
Marc Alff's avatar
Marc Alff committed
4871 4872
  if (!(file= mysql_file_fopen(key_file_init, file_name,
                               O_RDONLY, MYF(MY_WME))))
4873
    DBUG_RETURN(TRUE);
unknown's avatar
Merge  
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4874
  bootstrap(file);
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Marc Alff committed
4875
  mysql_file_fclose(file, MYF(MY_WME));
4876
  DBUG_RETURN(FALSE);
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4877 4878 4879
}


4880
#ifndef EMBEDDED_LIBRARY
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4881 4882 4883 4884 4885 4886 4887 4888 4889 4890

/*
   Simple scheduler that use the main thread to handle the request

   NOTES
     This is only used for debugging, when starting mysqld with
     --thread-handling=no-threads or --one-thread

     When we enter this function, LOCK_thread_count is hold!
*/
4891

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4892 4893
void handle_connection_in_main_thread(THD *thd)
{
Marc Alff's avatar
Marc Alff committed
4894
  mysql_mutex_assert_owner(&LOCK_thread_count);
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  thread_cache_size=0;			// Safety
  threads.append(thd);
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4897
  mysql_mutex_unlock(&LOCK_thread_count);
4898
  thd->start_utime= my_micro_time();
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4899
  do_handle_one_connection(thd);
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}


/*
  Scheduler that uses one thread per connection
*/

void create_thread_to_handle_connection(THD *thd)
{
  if (cached_thread_count > wake_thread)
  {
    /* Get thread from cache */
    thread_cache.append(thd);
    wake_thread++;
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4914
    mysql_cond_signal(&COND_thread_cache);
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  }
  else
  {
4918
    char error_message_buff[MYSQL_ERRMSG_SIZE];
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    /* Create new thread to handle connection */
    int error;
    thread_created++;
    threads.append(thd);
    DBUG_PRINT("info",(("creating thread %lu"), thd->thread_id));
4924
    thd->prior_thr_create_utime= thd->start_utime= my_micro_time();
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4925 4926 4927 4928
    if ((error= mysql_thread_create(key_thread_one_connection,
                                    &thd->real_id, &connection_attrib,
                                    handle_one_connection,
                                    (void*) thd)))
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4929
    {
4930
      /* purecov: begin inspected */
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      DBUG_PRINT("error",
                 ("Can't create thread to handle request (error %d)",
                  error));
      thread_count--;
      thd->killed= THD::KILL_CONNECTION;			// Safety
Marc Alff's avatar
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4936
      mysql_mutex_unlock(&LOCK_thread_count);
4937

Marc Alff's avatar
Marc Alff committed
4938
      mysql_mutex_lock(&LOCK_connection_count);
4939
      --connection_count;
Marc Alff's avatar
Marc Alff committed
4940
      mysql_mutex_unlock(&LOCK_connection_count);
4941

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4942
      statistic_increment(aborted_connects,&LOCK_status);
4943 4944
      /* Can't use my_error() since store_globals has not been called. */
      my_snprintf(error_message_buff, sizeof(error_message_buff),
4945
                  ER_THD(thd, ER_CANT_CREATE_THREAD), error);
Marc Alff's avatar
Marc Alff committed
4946
      net_send_error(thd, ER_CANT_CREATE_THREAD, error_message_buff, NULL);
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Marc Alff committed
4947
      mysql_mutex_lock(&LOCK_thread_count);
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4948 4949
      close_connection(thd,0,0);
      delete thd;
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4950
      mysql_mutex_unlock(&LOCK_thread_count);
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4951 4952 4953 4954
      return;
      /* purecov: end */
    }
  }
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4955
  mysql_mutex_unlock(&LOCK_thread_count);
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  DBUG_PRINT("info",("Thread created"));
}


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4960
/**
4961 4962 4963 4964 4965 4966
  Create new thread to handle incoming connection.

    This function will create new thread to handle the incoming
    connection.  If there are idle cached threads one will be used.
    'thd' will be pushed into 'threads'.

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4967
    In single-threaded mode (\#define ONE_THREAD) connection will be
4968 4969
    handled inside this function.

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4970
  @param[in,out] thd    Thread handle of future thread.
4971 4972
*/

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static void create_new_thread(THD *thd)
{
  DBUG_ENTER("create_new_thread");

4977 4978 4979 4980 4981
  /*
    Don't allow too many connections. We roughly check here that we allow
    only (max_connections + 1) connections.
  */

Marc Alff's avatar
Marc Alff committed
4982
  mysql_mutex_lock(&LOCK_connection_count);
4983 4984

  if (connection_count >= max_connections + 1 || abort_loop)
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4985
  {
Marc Alff's avatar
Marc Alff committed
4986
    mysql_mutex_unlock(&LOCK_connection_count);
4987

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4988
    DBUG_PRINT("error",("Too many connections"));
4989
    close_connection(thd, ER_CON_COUNT_ERROR, 1);
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4990 4991 4992
    delete thd;
    DBUG_VOID_RETURN;
  }
4993 4994 4995

  ++connection_count;

4996 4997 4998
  if (connection_count > max_used_connections)
    max_used_connections= connection_count;

Marc Alff's avatar
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4999
  mysql_mutex_unlock(&LOCK_connection_count);
5000 5001 5002

  /* Start a new thread to handle connection. */

Marc Alff's avatar
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5003
  mysql_mutex_lock(&LOCK_thread_count);
5004

5005 5006 5007 5008 5009
  /*
    The initialization of thread_id is done in create_embedded_thd() for
    the embedded library.
    TODO: refactor this to avoid code duplication there
  */
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unknown committed
5010
  thd->thread_id= thd->variables.pseudo_thread_id= thread_id++;
unknown's avatar
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5011

5012 5013
  thread_count++;

5014
  MYSQL_CALLBACK(thread_scheduler, add_connection, (thd));
5015

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5016 5017
  DBUG_VOID_RETURN;
}
5018 5019
#endif /* EMBEDDED_LIBRARY */

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5020

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5021 5022 5023 5024
#ifdef SIGNALS_DONT_BREAK_READ
inline void kill_broken_server()
{
  /* hack to get around signals ignored in syscalls for problem OS's */
5025
  if (unix_sock == INVALID_SOCKET ||
5026
      (!opt_disable_networking && ip_sock == INVALID_SOCKET))
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5027 5028
  {
    select_thread_in_use = 0;
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unknown committed
5029
    /* The following call will never return */
5030
    kill_server((void*) MYSQL_KILL_SIGNAL);
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5031 5032 5033 5034 5035 5036
  }
}
#define MAYBE_BROKEN_SYSCALL kill_broken_server();
#else
#define MAYBE_BROKEN_SYSCALL
#endif
unknown's avatar
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5037 5038 5039

	/* Handle new connections and spawn new process to handle them */

5040
#ifndef EMBEDDED_LIBRARY
5041

5042
void handle_connections_sockets()
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5043
{
5044
  my_socket UNINIT_VAR(sock), UNINIT_VAR(new_sock);
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5045 5046
  uint error_count=0;
  THD *thd;
5047
  struct sockaddr_storage cAddr;
5048
  int ip_flags=0,socket_flags=0,flags=0,retval;
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5049
  st_vio *vio_tmp;
5050 5051 5052 5053 5054 5055 5056 5057
#ifdef HAVE_POLL
  int socket_count= 0;
  struct pollfd fds[2]; // for ip_sock and unix_sock
#else
  fd_set readFDs,clientFDs;
  uint max_used_connection= (uint) (max(ip_sock,unix_sock)+1);
#endif

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5058 5059
  DBUG_ENTER("handle_connections_sockets");

5060
#ifndef HAVE_POLL
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5061
  FD_ZERO(&clientFDs);
5062 5063
#endif

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5064 5065
  if (ip_sock != INVALID_SOCKET)
  {
5066 5067 5068 5069 5070
#ifdef HAVE_POLL
    fds[socket_count].fd= ip_sock;
    fds[socket_count].events= POLLIN;
    socket_count++;
#else
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5071
    FD_SET(ip_sock,&clientFDs);
5072
#endif    
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5073 5074 5075 5076 5077
#ifdef HAVE_FCNTL
    ip_flags = fcntl(ip_sock, F_GETFL, 0);
#endif
  }
#ifdef HAVE_SYS_UN_H
5078 5079 5080 5081 5082
#ifdef HAVE_POLL
  fds[socket_count].fd= unix_sock;
  fds[socket_count].events= POLLIN;
  socket_count++;
#else
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5083
  FD_SET(unix_sock,&clientFDs);
5084
#endif
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5085
#ifdef HAVE_FCNTL
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5086
  socket_flags=fcntl(unix_sock, F_GETFL, 0);
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5087
#endif
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5088 5089 5090
#endif

  DBUG_PRINT("general",("Waiting for connections."));
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5091
  MAYBE_BROKEN_SYSCALL;
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unknown committed
5092 5093
  while (!abort_loop)
  {
5094 5095
#ifdef HAVE_POLL
    retval= poll(fds, socket_count, -1);
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5096
#else
5097 5098 5099 5100 5101 5102
    readFDs=clientFDs;

    retval= select((int) max_used_connection,&readFDs,0,0,0);
#endif

    if (retval < 0)
unknown's avatar
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5103
    {
unknown's avatar
unknown committed
5104
      if (socket_errno != SOCKET_EINTR)
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5105 5106
      {
	if (!select_errors++ && !abort_loop)	/* purecov: inspected */
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unknown committed
5107
	  sql_print_error("mysqld: Got error %d from select",socket_errno); /* purecov: inspected */
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unknown committed
5108
      }
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unknown committed
5109
      MAYBE_BROKEN_SYSCALL
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unknown committed
5110 5111
      continue;
    }
5112

unknown's avatar
unknown committed
5113
    if (abort_loop)
unknown's avatar
unknown committed
5114 5115
    {
      MAYBE_BROKEN_SYSCALL;
unknown's avatar
unknown committed
5116
      break;
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5117
    }
unknown's avatar
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5118

5119
    /* Is this a new connection request ? */
5120 5121 5122 5123 5124 5125 5126 5127 5128 5129 5130 5131 5132 5133 5134
#ifdef HAVE_POLL
    for (int i= 0; i < socket_count; ++i) 
    {
      if (fds[i].revents & POLLIN)
      {
        sock= fds[i].fd;
#ifdef HAVE_FCNTL
        flags= fcntl(sock, F_GETFL, 0);
#else
        flags= 0;
#endif // HAVE_FCNTL
        break;
      }
    }
#else  // HAVE_POLL
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5135 5136 5137 5138 5139 5140 5141
#ifdef HAVE_SYS_UN_H
    if (FD_ISSET(unix_sock,&readFDs))
    {
      sock = unix_sock;
      flags= socket_flags;
    }
    else
5142
#endif // HAVE_SYS_UN_H
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5143 5144 5145 5146
    {
      sock = ip_sock;
      flags= ip_flags;
    }
5147
#endif // HAVE_POLL
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5148 5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160

#if !defined(NO_FCNTL_NONBLOCK)
    if (!(test_flags & TEST_BLOCKING))
    {
#if defined(O_NONBLOCK)
      fcntl(sock, F_SETFL, flags | O_NONBLOCK);
#elif defined(O_NDELAY)
      fcntl(sock, F_SETFL, flags | O_NDELAY);
#endif
    }
#endif /* NO_FCNTL_NONBLOCK */
    for (uint retry=0; retry < MAX_ACCEPT_RETRY; retry++)
    {
5161 5162 5163
      size_socket length= sizeof(struct sockaddr_storage);
      new_sock= accept(sock, (struct sockaddr *)(&cAddr),
                       &length);
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unknown committed
5164 5165
      if (new_sock != INVALID_SOCKET ||
	  (socket_errno != SOCKET_EINTR && socket_errno != SOCKET_EAGAIN))
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5166
	break;
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5167
      MAYBE_BROKEN_SYSCALL;
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5168 5169 5170 5171 5172 5173 5174 5175 5176 5177 5178 5179
#if !defined(NO_FCNTL_NONBLOCK)
      if (!(test_flags & TEST_BLOCKING))
      {
	if (retry == MAX_ACCEPT_RETRY - 1)
	  fcntl(sock, F_SETFL, flags);		// Try without O_NONBLOCK
      }
#endif
    }
#if !defined(NO_FCNTL_NONBLOCK)
    if (!(test_flags & TEST_BLOCKING))
      fcntl(sock, F_SETFL, flags);
#endif
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unknown committed
5180
    if (new_sock == INVALID_SOCKET)
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5181 5182 5183
    {
      if ((error_count++ & 255) == 0)		// This can happen often
	sql_perror("Error in accept");
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5184
      MAYBE_BROKEN_SYSCALL;
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5185
      if (socket_errno == SOCKET_ENFILE || socket_errno == SOCKET_EMFILE)
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5186 5187 5188 5189 5190 5191 5192 5193 5194 5195 5196
	sleep(1);				// Give other threads some time
      continue;
    }

#ifdef HAVE_LIBWRAP
    {
      if (sock == ip_sock)
      {
	struct request_info req;
	signal(SIGCHLD, SIG_DFL);
	request_init(&req, RQ_DAEMON, libwrapName, RQ_FILE, new_sock, NULL);
5197 5198
	my_fromhost(&req);
	if (!my_hosts_access(&req))
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5199
	{
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5200 5201 5202 5203 5204
	  /*
	    This may be stupid but refuse() includes an exit(0)
	    which we surely don't want...
	    clean_exit() - same stupid thing ...
	  */
5205
	  syslog(deny_severity, "refused connect from %s",
5206
		 my_eval_client(&req));
unknown's avatar
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5207

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5208 5209 5210 5211 5212 5213
	  /*
	    C++ sucks (the gibberish in front just translates the supplied
	    sink function pointer in the req structure from a void (*sink)();
	    to a void(*sink)(int) if you omit the cast, the C++ compiler
	    will cry...
	  */
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5214 5215 5216
	  if (req.sink)
	    ((void (*)(int))req.sink)(req.fd);

5217
	  (void) shutdown(new_sock, SHUT_RDWR);
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	  (void) closesocket(new_sock);
	  continue;
	}
      }
    }
#endif /* HAVE_LIBWRAP */

    {
      size_socket dummyLen;
5227 5228 5229 5230
      struct sockaddr_storage dummy;
      dummyLen = sizeof(dummy);
      if (  getsockname(new_sock,(struct sockaddr *)&dummy, 
                  (SOCKET_SIZE_TYPE *)&dummyLen) < 0  )
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unknown committed
5231 5232
      {
	sql_perror("Error on new connection socket");
5233
	(void) shutdown(new_sock, SHUT_RDWR);
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	(void) closesocket(new_sock);
	continue;
      }
    }

    /*
    ** Don't allow too many connections
    */

    if (!(thd= new THD))
    {
5245
      (void) shutdown(new_sock, SHUT_RDWR);
Konstantin Osipov's avatar
Konstantin Osipov committed
5246
      (void) closesocket(new_sock);
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5247 5248 5249
      continue;
    }
    if (!(vio_tmp=vio_new(new_sock,
5250
			  sock == unix_sock ? VIO_TYPE_SOCKET :
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5251
			  VIO_TYPE_TCPIP,
5252
			  sock == unix_sock ? VIO_LOCALHOST: 0)) ||
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5253 5254
	my_net_init(&thd->net,vio_tmp))
    {
5255 5256 5257 5258 5259 5260 5261
      /*
        Only delete the temporary vio if we didn't already attach it to the
        NET object. The destructor in THD will delete any initialized net
        structure.
      */
      if (vio_tmp && thd->net.vio != vio_tmp)
        vio_delete(vio_tmp);
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5262 5263
      else
      {
5264
	(void) shutdown(new_sock, SHUT_RDWR);
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	(void) closesocket(new_sock);
      }
      delete thd;
      continue;
    }
    if (sock == unix_sock)
5271
      thd->security_ctx->host=(char*) my_localhost;
5272

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    create_new_thread(thd);
  }
5275 5276 5277
  DBUG_VOID_RETURN;
}

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5278

5279 5280 5281 5282 5283
#ifdef _WIN32
pthread_handler_t handle_connections_sockets_thread(void *arg)
{
  my_thread_init();
  handle_connections_sockets();
5284
  decrement_handler_count();
5285
  return 0;
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5286 5287
}

5288
pthread_handler_t handle_connections_namedpipes(void *arg)
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5289 5290
{
  HANDLE hConnectedPipe;
5291
  OVERLAPPED connectOverlapped= {0};
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  THD *thd;
  my_thread_init();
  DBUG_ENTER("handle_connections_namedpipes");
5295 5296 5297 5298 5299 5300
  connectOverlapped.hEvent= CreateEvent(NULL, TRUE, FALSE, NULL);
  if (!connectOverlapped.hEvent)
  {
    sql_print_error("Can't create event, last error=%u", GetLastError());
    unireg_abort(1);
  }
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5301 5302 5303 5304
  DBUG_PRINT("general",("Waiting for named pipe connections."));
  while (!abort_loop)
  {
    /* wait for named pipe connection */
5305 5306 5307 5308 5309 5310 5311 5312 5313 5314
    BOOL fConnected= ConnectNamedPipe(hPipe, &connectOverlapped);
    if (!fConnected && (GetLastError() == ERROR_IO_PENDING))
    {
        /*
          ERROR_IO_PENDING says async IO has started but not yet finished.
          GetOverlappedResult will wait for completion.
        */
        DWORD bytes;
        fConnected= GetOverlappedResult(hPipe, &connectOverlapped,&bytes, TRUE);
    }
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5315 5316
    if (abort_loop)
      break;
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5317
    if (!fConnected)
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5318
      fConnected = GetLastError() == ERROR_PIPE_CONNECTED;
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5319
    if (!fConnected)
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5320
    {
unknown's avatar
Merge  
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5321 5322
      CloseHandle(hPipe);
      if ((hPipe= CreateNamedPipe(pipe_name,
5323 5324
                                  PIPE_ACCESS_DUPLEX |
                                  FILE_FLAG_OVERLAPPED,
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Merge  
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5325 5326 5327 5328 5329 5330 5331 5332 5333 5334 5335
                                  PIPE_TYPE_BYTE |
                                  PIPE_READMODE_BYTE |
                                  PIPE_WAIT,
                                  PIPE_UNLIMITED_INSTANCES,
                                  (int) global_system_variables.
                                  net_buffer_length,
                                  (int) global_system_variables.
                                  net_buffer_length,
                                  NMPWAIT_USE_DEFAULT_WAIT,
                                  &saPipeSecurity)) ==
	  INVALID_HANDLE_VALUE)
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5336 5337 5338 5339 5340 5341 5342
      {
	sql_perror("Can't create new named pipe!");
	break;					// Abort
      }
    }
    hConnectedPipe = hPipe;
    /* create new pipe for new connection */
5343
    if ((hPipe = CreateNamedPipe(pipe_name,
5344 5345
                 PIPE_ACCESS_DUPLEX |
                 FILE_FLAG_OVERLAPPED,
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5346 5347 5348 5349
				 PIPE_TYPE_BYTE |
				 PIPE_READMODE_BYTE |
				 PIPE_WAIT,
				 PIPE_UNLIMITED_INSTANCES,
5350 5351
				 (int) global_system_variables.net_buffer_length,
				 (int) global_system_variables.net_buffer_length,
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5352 5353 5354 5355 5356 5357 5358 5359 5360
				 NMPWAIT_USE_DEFAULT_WAIT,
				 &saPipeSecurity)) ==
	INVALID_HANDLE_VALUE)
    {
      sql_perror("Can't create new named pipe!");
      hPipe=hConnectedPipe;
      continue;					// We have to try again
    }

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unknown committed
5361
    if (!(thd = new THD))
unknown's avatar
unknown committed
5362
    {
unknown's avatar
Merge  
unknown committed
5363 5364
      DisconnectNamedPipe(hConnectedPipe);
      CloseHandle(hConnectedPipe);
unknown's avatar
unknown committed
5365 5366
      continue;
    }
5367
    if (!(thd->net.vio= vio_new_win32pipe(hConnectedPipe)) ||
unknown's avatar
unknown committed
5368 5369
	my_net_init(&thd->net, thd->net.vio))
    {
5370
      close_connection(thd, ER_OUT_OF_RESOURCES, 1);
unknown's avatar
unknown committed
5371 5372 5373
      delete thd;
      continue;
    }
5374 5375
    /* Host is unknown */
    thd->security_ctx->host= my_strdup(my_localhost, MYF(0));
unknown's avatar
unknown committed
5376 5377
    create_new_thread(thd);
  }
5378
  CloseHandle(connectOverlapped.hEvent);
5379
  DBUG_LEAVE;
5380
  decrement_handler_count();
5381
  return 0;
unknown's avatar
unknown committed
5382
}
Vladislav Vaintroub's avatar
Vladislav Vaintroub committed
5383
#endif /* _WIN32 */
unknown's avatar
unknown committed
5384

5385

unknown's avatar
unknown committed
5386
#ifdef HAVE_SMEM
5387

unknown's avatar
unknown committed
5388 5389
/**
  Thread of shared memory's service.
5390

unknown's avatar
unknown committed
5391 5392
  @param arg                              Arguments of thread
*/
5393
pthread_handler_t handle_connections_shared_memory(void *arg)
5394
{
5395 5396
  /* file-mapping object, use for create shared memory */
  HANDLE handle_connect_file_map= 0;
5397
  char  *handle_connect_map= 0;                 // pointer on shared memory
5398 5399 5400
  HANDLE event_connect_answer= 0;
  ulong smem_buffer_length= shared_memory_buffer_length + 4;
  ulong connect_number= 1;
5401
  char *tmp= NULL;
5402 5403
  char *suffix_pos;
  char connect_number_char[22], *p;
5404
  const char *errmsg= 0;
5405
  SECURITY_ATTRIBUTES *sa_event= 0, *sa_mapping= 0;
5406 5407 5408 5409
  my_thread_init();
  DBUG_ENTER("handle_connections_shared_memorys");
  DBUG_PRINT("general",("Waiting for allocated shared memory."));

5410 5411 5412 5413 5414 5415
  /*
     get enough space base-name + '_' + longest suffix we might ever send
   */
  if (!(tmp= (char *)my_malloc(strlen(shared_memory_base_name) + 32L, MYF(MY_FAE))))
    goto error;

5416 5417 5418 5419 5420 5421 5422 5423
  if (my_security_attr_create(&sa_event, &errmsg,
                              GENERIC_ALL, SYNCHRONIZE | EVENT_MODIFY_STATE))
    goto error;

  if (my_security_attr_create(&sa_mapping, &errmsg,
                             GENERIC_ALL, FILE_MAP_READ | FILE_MAP_WRITE))
    goto error;

5424 5425 5426 5427 5428 5429 5430
  /*
    The name of event and file-mapping events create agree next rule:
      shared_memory_base_name+unique_part
    Where:
      shared_memory_base_name is unique value for each server
      unique_part is unique value for each object (events and file-mapping)
  */
5431
  suffix_pos= strxmov(tmp,shared_memory_base_name,"_",NullS);
5432
  strmov(suffix_pos, "CONNECT_REQUEST");
5433 5434
  if ((smem_event_connect_request= CreateEvent(sa_event,
                                               FALSE, FALSE, tmp)) == 0)
5435
  {
5436
    errmsg= "Could not create request event";
5437 5438
    goto error;
  }
5439
  strmov(suffix_pos, "CONNECT_ANSWER");
5440
  if ((event_connect_answer= CreateEvent(sa_event, FALSE, FALSE, tmp)) == 0)
5441
  {
5442
    errmsg="Could not create answer event";
5443 5444
    goto error;
  }
5445
  strmov(suffix_pos, "CONNECT_DATA");
5446 5447 5448
  if ((handle_connect_file_map=
       CreateFileMapping(INVALID_HANDLE_VALUE, sa_mapping,
                         PAGE_READWRITE, 0, sizeof(connect_number), tmp)) == 0)
5449
  {
5450
    errmsg= "Could not create file mapping";
5451 5452
    goto error;
  }
5453 5454 5455
  if ((handle_connect_map= (char *)MapViewOfFile(handle_connect_file_map,
						  FILE_MAP_WRITE,0,0,
						  sizeof(DWORD))) == 0)
5456
  {
5457
    errmsg= "Could not create shared memory service";
5458 5459 5460 5461 5462
    goto error;
  }

  while (!abort_loop)
  {
5463
    /* Wait a request from client */
5464
    WaitForSingleObject(smem_event_connect_request,INFINITE);
5465

unknown's avatar
unknown committed
5466 5467 5468
    /*
       it can be after shutdown command
    */
unknown's avatar
Merge  
unknown committed
5469
    if (abort_loop)
unknown's avatar
unknown committed
5470
      goto error;
5471

5472 5473 5474 5475 5476 5477
    HANDLE handle_client_file_map= 0;
    char  *handle_client_map= 0;
    HANDLE event_client_wrote= 0;
    HANDLE event_client_read= 0;    // for transfer data server <-> client
    HANDLE event_server_wrote= 0;
    HANDLE event_server_read= 0;
unknown's avatar
unknown committed
5478
    HANDLE event_conn_closed= 0;
5479
    THD *thd= 0;
5480

5481
    p= int10_to_str(connect_number, connect_number_char, 10);
5482 5483 5484 5485 5486 5487 5488 5489 5490 5491
    /*
      The name of event and file-mapping events create agree next rule:
        shared_memory_base_name+unique_part+number_of_connection
        Where:
	  shared_memory_base_name is uniquel value for each server
	  unique_part is unique value for each object (events and file-mapping)
	  number_of_connection is connection-number between server and client
    */
    suffix_pos= strxmov(tmp,shared_memory_base_name,"_",connect_number_char,
			 "_",NullS);
5492
    strmov(suffix_pos, "DATA");
5493 5494 5495
    if ((handle_client_file_map=
         CreateFileMapping(INVALID_HANDLE_VALUE, sa_mapping,
                           PAGE_READWRITE, 0, smem_buffer_length, tmp)) == 0)
5496
    {
5497
      errmsg= "Could not create file mapping";
5498 5499
      goto errorconn;
    }
5500 5501 5502
    if ((handle_client_map= (char*)MapViewOfFile(handle_client_file_map,
						  FILE_MAP_WRITE,0,0,
						  smem_buffer_length)) == 0)
5503
    {
5504
      errmsg= "Could not create memory map";
5505 5506 5507
      goto errorconn;
    }
    strmov(suffix_pos, "CLIENT_WROTE");
5508
    if ((event_client_wrote= CreateEvent(sa_event, FALSE, FALSE, tmp)) == 0)
5509
    {
5510
      errmsg= "Could not create client write event";
5511 5512 5513
      goto errorconn;
    }
    strmov(suffix_pos, "CLIENT_READ");
5514
    if ((event_client_read= CreateEvent(sa_event, FALSE, FALSE, tmp)) == 0)
5515
    {
5516
      errmsg= "Could not create client read event";
5517 5518 5519
      goto errorconn;
    }
    strmov(suffix_pos, "SERVER_READ");
5520
    if ((event_server_read= CreateEvent(sa_event, FALSE, FALSE, tmp)) == 0)
5521
    {
5522
      errmsg= "Could not create server read event";
5523 5524 5525
      goto errorconn;
    }
    strmov(suffix_pos, "SERVER_WROTE");
5526 5527
    if ((event_server_wrote= CreateEvent(sa_event,
                                         FALSE, FALSE, tmp)) == 0)
5528
    {
5529
      errmsg= "Could not create server write event";
5530 5531
      goto errorconn;
    }
unknown's avatar
unknown committed
5532
    strmov(suffix_pos, "CONNECTION_CLOSED");
5533 5534
    if ((event_conn_closed= CreateEvent(sa_event,
                                        TRUE, FALSE, tmp)) == 0)
unknown's avatar
unknown committed
5535 5536 5537 5538
    {
      errmsg= "Could not create closed connection event";
      goto errorconn;
    }
5539
    if (abort_loop)
5540
      goto errorconn;
5541 5542 5543
    if (!(thd= new THD))
      goto errorconn;
    /* Send number of connection to client */
5544
    int4store(handle_connect_map, connect_number);
5545
    if (!SetEvent(event_connect_answer))
5546
    {
5547
      errmsg= "Could not send answer event";
5548 5549
      goto errorconn;
    }
5550
    /* Set event that client should receive data */
5551 5552
    if (!SetEvent(event_client_read))
    {
5553
      errmsg= "Could not set client to read mode";
5554 5555
      goto errorconn;
    }
5556
    if (!(thd->net.vio= vio_new_win32shared_memory(handle_client_file_map,
unknown's avatar
unknown committed
5557 5558 5559 5560 5561
                                                   handle_client_map,
                                                   event_client_wrote,
                                                   event_client_read,
                                                   event_server_wrote,
                                                   event_server_read,
unknown's avatar
unknown committed
5562
                                                   event_conn_closed)) ||
unknown's avatar
unknown committed
5563
                        my_net_init(&thd->net, thd->net.vio))
5564
    {
5565
      close_connection(thd, ER_OUT_OF_RESOURCES, 1);
5566 5567
      errmsg= 0;
      goto errorconn;
5568
    }
5569
    thd->security_ctx->host= my_strdup(my_localhost, MYF(0)); /* Host is unknown */
5570
    create_new_thread(thd);
5571 5572 5573 5574 5575 5576 5577 5578 5579 5580 5581 5582
    connect_number++;
    continue;

errorconn:
    /* Could not form connection;  Free used handlers/memort and retry */
    if (errmsg)
    {
      char buff[180];
      strxmov(buff, "Can't create shared memory connection: ", errmsg, ".",
	      NullS);
      sql_perror(buff);
    }
5583
    if (handle_client_file_map)
unknown's avatar
unknown committed
5584 5585 5586 5587 5588 5589 5590 5591 5592 5593 5594 5595 5596
      CloseHandle(handle_client_file_map);
    if (handle_client_map)
      UnmapViewOfFile(handle_client_map);
    if (event_server_wrote)
      CloseHandle(event_server_wrote);
    if (event_server_read)
      CloseHandle(event_server_read);
    if (event_client_wrote)
      CloseHandle(event_client_wrote);
    if (event_client_read)
      CloseHandle(event_client_read);
    if (event_conn_closed)
      CloseHandle(event_conn_closed);
5597
    delete thd;
5598
  }
5599 5600

  /* End shared memory handling */
5601
error:
5602
  if (tmp)
5603
    my_free(tmp);
5604

5605 5606 5607 5608 5609 5610
  if (errmsg)
  {
    char buff[180];
    strxmov(buff, "Can't create shared memory service: ", errmsg, ".", NullS);
    sql_perror(buff);
  }
5611 5612
  my_security_attr_free(sa_event);
  my_security_attr_free(sa_mapping);
5613 5614 5615
  if (handle_connect_map)	UnmapViewOfFile(handle_connect_map);
  if (handle_connect_file_map)	CloseHandle(handle_connect_file_map);
  if (event_connect_answer)	CloseHandle(event_connect_answer);
5616
  if (smem_event_connect_request) CloseHandle(smem_event_connect_request);
5617
  DBUG_LEAVE;
5618
  decrement_handler_count();
5619
  return 0;
5620 5621
}
#endif /* HAVE_SMEM */
5622
#endif /* EMBEDDED_LIBRARY */
unknown's avatar
unknown committed
5623

5624 5625 5626

/****************************************************************************
  Handle start options
unknown's avatar
unknown committed
5627 5628
******************************************************************************/

5629
DYNAMIC_ARRAY all_options;
5630

5631 5632 5633 5634 5635
/**
  System variables are automatically command-line options (few
  exceptions are documented in sys_var.h), so don't need
  to be listed here.
*/
5636

Marc Alff's avatar
Marc Alff committed
5637
struct my_option my_long_options[]=
5638
{
unknown's avatar
unknown committed
5639
  {"help", '?', "Display this help and exit.", 
5640
   &opt_help, &opt_help, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0,
unknown's avatar
unknown committed
5641 5642
   0, 0},
#ifdef HAVE_REPLICATION
5643
  {"abort-slave-event-count", 0,
unknown's avatar
unknown committed
5644
   "Option used by mysql-test for debugging and testing of replication.",
5645
   &abort_slave_event_count,  &abort_slave_event_count,
unknown's avatar
unknown committed
5646 5647
   0, GET_INT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#endif /* HAVE_REPLICATION */
5648
  {"allow-suspicious-udfs", 0,
unknown's avatar
unknown committed
5649 5650
   "Allows use of UDFs consisting of only one symbol xxx() "
   "without corresponding xxx_init() or xxx_deinit(). That also means "
5651 5652
   "that one can load any function from any library, for example exit() "
   "from libc.so",
5653
   &opt_allow_suspicious_udfs, &opt_allow_suspicious_udfs,
5654
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
5655 5656
  {"ansi", 'a', "Use ANSI SQL syntax instead of MySQL syntax. This mode "
   "will also set transaction isolation level 'serializable'.", 0, 0, 0,
unknown's avatar
unknown committed
5657
   GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
5658 5659 5660 5661 5662 5663
  /*
    Because Sys_var_bit does not support command-line options, we need to
    explicitely add one for --autocommit
  */
  {"autocommit", OPT_AUTOCOMMIT, "Set default value for autocommit (0 or 1)",
   NULL, NULL, 0, GET_BOOL, OPT_ARG, 0, 0, 0, 0, 0, NULL},
unknown's avatar
unknown committed
5664
  {"bind-address", OPT_BIND_ADDRESS, "IP address to bind to.",
5665
   &my_bind_addr_str, &my_bind_addr_str, 0, GET_STR,
unknown's avatar
unknown committed
5666
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
5667
  {"binlog-do-db", OPT_BINLOG_DO_DB,
5668 5669
   "Tells the master it should log updates for the specified database, "
   "and exclude all others not explicitly mentioned.",
5670
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
unknown's avatar
unknown committed
5671
  {"binlog-ignore-db", OPT_BINLOG_IGNORE_DB,
Staale Smedseng's avatar
Staale Smedseng committed
5672
   "Tells the master that updates to the given database should not be logged to the binary log.",
5673
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
5674
  {"binlog-row-event-max-size", 0,
5675 5676 5677
   "The maximum size of a row-based binary log event in bytes. Rows will be "
   "grouped into events smaller than this size if possible. "
   "The value has to be a multiple of 256.",
5678 5679
   &opt_binlog_rows_event_max_size, &opt_binlog_rows_event_max_size,
   0, GET_ULONG, REQUIRED_ARG,
5680 5681 5682 5683
   /* def_value */ 1024, /* min_value */  256, /* max_value */ ULONG_MAX, 
   /* sub_size */     0, /* block_size */ 256, 
   /* app_type */ 0
  },
5684
#ifndef DISABLE_GRANT_OPTIONS
5685
  {"bootstrap", OPT_BOOTSTRAP, "Used by mysql installation scripts.", 0, 0, 0,
5686
   GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
5687
#endif
5688
  {"character-set-client-handshake", 0,
unknown's avatar
unknown committed
5689
   "Don't ignore client side character set value sent during handshake.",
5690 5691
   &opt_character_set_client_handshake,
   &opt_character_set_client_handshake,
5692
    0, GET_BOOL, NO_ARG, 1, 0, 0, 0, 0, 0},
5693
  {"character-set-filesystem", 0,
unknown's avatar
unknown committed
5694
   "Set the filesystem character set.",
5695 5696
   &character_set_filesystem_name,
   &character_set_filesystem_name,
unknown's avatar
unknown committed
5697
   0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
unknown's avatar
unknown committed
5698
  {"character-set-server", 'C', "Set the default character set.",
5699
   &default_character_set_name, &default_character_set_name,
unknown's avatar
unknown committed
5700
   0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
unknown's avatar
unknown committed
5701
  {"chroot", 'r', "Chroot mysqld daemon during startup.",
5702
   &mysqld_chroot, &mysqld_chroot, 0, GET_STR, REQUIRED_ARG,
unknown's avatar
unknown committed
5703
   0, 0, 0, 0, 0, 0},
5704
  {"collation-server", 0, "Set the default collation.",
5705
   &default_collation_name, &default_collation_name,
unknown's avatar
unknown committed
5706
   0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
Staale Smedseng's avatar
Staale Smedseng committed
5707
  {"console", OPT_CONSOLE, "Write error output on screen; don't remove the console window on windows.",
5708
   &opt_console, &opt_console, 0, GET_BOOL, NO_ARG, 0, 0, 0,
5709
   0, 0, 0},
5710
  {"core-file", OPT_WANT_CORE, "Write core on errors.", 0, 0, 0, GET_NO_ARG,
5711
   NO_ARG, 0, 0, 0, 0, 0, 0},
5712 5713 5714
  /* default-storage-engine should have "MyISAM" as def_value. Instead
     of initializing it here it is done in init_common_variables() due
     to a compiler bug in Sun Studio compiler. */
5715
  {"default-storage-engine", 0, "The default storage engine for new tables",
5716
   &default_storage_engine, 0, 0, GET_STR, REQUIRED_ARG,
5717
   0, 0, 0, 0, 0, 0 },
5718
  {"default-time-zone", 0, "Set the default time zone.",
5719
   &default_tz_name, &default_tz_name,
5720
   0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
unknown's avatar
unknown committed
5721
#ifdef HAVE_OPENSSL
5722
  {"des-key-file", 0,
unknown's avatar
unknown committed
5723
   "Load keys for des_encrypt() and des_encrypt from given file.",
5724
   &des_key_file, &des_key_file, 0, GET_STR, REQUIRED_ARG,
unknown's avatar
unknown committed
5725 5726 5727
   0, 0, 0, 0, 0, 0},
#endif /* HAVE_OPENSSL */
#ifdef HAVE_REPLICATION
5728
  {"disconnect-slave-event-count", 0,
unknown's avatar
unknown committed
5729
   "Option used by mysql-test for debugging and testing of replication.",
5730 5731
   &disconnect_slave_event_count, &disconnect_slave_event_count,
   0, GET_INT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
unknown's avatar
unknown committed
5732
#endif /* HAVE_REPLICATION */
Staale Smedseng's avatar
Staale Smedseng committed
5733
  {"exit-info", 'T', "Used for debugging. Use at your own risk.", 0, 0, 0,
5734
   GET_LONG, OPT_ARG, 0, 0, 0, 0, 0, 0},
5735 5736 5737 5738 5739

  {"external-locking", 0, "Use system (external) locking (disabled by "
   "default).  With this option enabled you can run myisamchk to test "
   "(not repair) tables while the MySQL server is running. Disable with "
   "--skip-external-locking.", &opt_external_locking, &opt_external_locking,
unknown's avatar
unknown committed
5740
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
5741 5742
  /* We must always support the next option to make scripts like mysqltest
     easier to do */
5743
  {"gdb", 0,
Staale Smedseng's avatar
Staale Smedseng committed
5744
   "Set up signals usable for debugging.",
5745
   &opt_debugging, &opt_debugging,
5746
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
5747
#ifdef HAVE_LARGE_PAGE_OPTION
5748
  {"super-large-pages", 0, "Enable support for super large pages.",
5749
   &opt_super_large_pages, &opt_super_large_pages, 0,
5750
   GET_BOOL, OPT_ARG, 0, 0, 1, 0, 1, 0},
unknown's avatar
Merge  
unknown committed
5751
#endif
5752
  {"language", 'L',
5753 5754
   "Client error messages in given language. May be given as a full path. "
   "Deprecated. Use --lc-messages-dir instead.",
5755
   &lc_messages_dir_ptr, &lc_messages_dir_ptr, 0,
5756
   GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
5757
  {"lc-messages", 0,
5758
   "Set the language used for the error messages.",
5759
   &lc_messages, &lc_messages, 0, GET_STR, REQUIRED_ARG,
5760
   0, 0, 0, 0, 0, 0 },
5761
  {"lc-time-names", 0,
5762
   "Set the language used for the month names and the days of the week.",
5763
   &lc_time_names_name, &lc_time_names_name,
5764
   0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
5765
  {"log", 'l', "Log connections and queries to file (deprecated option, use "
5766 5767
   "--general-log/--general-log-file instead).", &opt_logname, &opt_logname,
   0, GET_STR_ALLOC, OPT_ARG, 0, 0, 0, 0, 0, 0},
5768
  {"log-bin", OPT_BIN_LOG,
unknown's avatar
Merge  
unknown committed
5769 5770 5771
   "Log update queries in binary format. Optional (but strongly recommended "
   "to avoid replication problems if server's hostname changes) argument "
   "should be the chosen location for the binary log files.",
5772
   &opt_bin_logname, &opt_bin_logname, 0, GET_STR_ALLOC,
unknown's avatar
unknown committed
5773
   OPT_ARG, 0, 0, 0, 0, 0, 0},
5774
  {"log-bin-index", 0,
5775
   "File that holds the names for last binary log files.",
5776
   &opt_binlog_index_name, &opt_binlog_index_name, 0, GET_STR,
5777
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
5778
  {"log-isam", OPT_ISAM_LOG, "Log all MyISAM changes to file.",
5779
   &myisam_log_filename, &myisam_log_filename, 0, GET_STR,
5780
   OPT_ARG, 0, 0, 0, 0, 0, 0},
5781
  {"log-short-format", 0,
unknown's avatar
unknown committed
5782
   "Don't log extra information to update and slow-query logs.",
5783
   &opt_short_log_format, &opt_short_log_format,
unknown's avatar
unknown committed
5784
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
5785
  {"log-slow-admin-statements", 0,
5786 5787
   "Log slow OPTIMIZE, ANALYZE, ALTER and other administrative statements to "
   "the slow log if it is open.", &opt_log_slow_admin_statements,
5788
   &opt_log_slow_admin_statements, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
5789
 {"log-slow-slave-statements", 0,
5790
  "Log slow statements executed by slave thread to the slow log if it is open.",
5791
  &opt_log_slow_slave_statements, &opt_log_slow_slave_statements,
5792
  0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
Konstantin Osipov's avatar
Konstantin Osipov committed
5793 5794 5795 5796 5797
  {"log-slow-queries", OPT_SLOW_QUERY_LOG,
   "Log slow queries to a table or log file. Defaults logging to table "
   "mysql.slow_log or hostname-slow.log if --log-output=file is used. "
   "Must be enabled to activate other slow log options. "
   "Deprecated option, use --slow-query-log/--slow-query-log-file instead.",
5798
   &opt_slow_logname, &opt_slow_logname, 0, GET_STR_ALLOC, OPT_ARG,
unknown's avatar
unknown committed
5799
   0, 0, 0, 0, 0, 0},
5800
  {"log-tc", 0,
unknown's avatar
Merge  
unknown committed
5801
   "Path to transaction coordinator log (used for transactions that affect "
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Staale Smedseng committed
5802
   "more than one storage engine, when binary log is disabled).",
5803
   &opt_tc_log_file, &opt_tc_log_file, 0, GET_STR,
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Merge  
unknown committed
5804
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
5805
#ifdef HAVE_MMAP
5806
  {"log-tc-size", 0, "Size of transaction coordinator log.",
5807
   &opt_tc_log_size, &opt_tc_log_size, 0, GET_ULONG,
5808 5809
   REQUIRED_ARG, TC_LOG_MIN_SIZE, TC_LOG_MIN_SIZE, ULONG_MAX, 0,
   TC_LOG_PAGE_SIZE, 0},
5810
#endif
5811
  {"master-info-file", 0,
5812 5813 5814
   "The location and name of the file that remembers the master and where "
   "the I/O replication thread is in the master's binlogs.",
   &master_info_file, &master_info_file, 0, GET_STR,
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5815
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
5816
  {"master-retry-count", 0,
5817
   "The number of tries the slave will make to connect to the master before giving up.",
5818
   &master_retry_count, &master_retry_count, 0, GET_ULONG,
5819
   REQUIRED_ARG, 3600*24, 0, 0, 0, 0, 0},
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SCRUM  
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5820
#ifdef HAVE_REPLICATION
5821
  {"init-rpl-role", 0, "Set the replication role.",
5822
   &rpl_status, &rpl_status, &rpl_role_typelib,
5823 5824
   GET_ENUM, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"max-binlog-dump-events", 0,
5825
   "Option used by mysql-test for debugging and testing of replication.",
5826
   &max_binlog_dump_events, &max_binlog_dump_events, 0,
5827
   GET_INT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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SCRUM  
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5828
#endif /* HAVE_REPLICATION */
5829
  {"memlock", 0, "Lock mysqld in memory.", &locked_in_memory,
5830
   &locked_in_memory, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
5831
  {"one-thread", OPT_ONE_THREAD,
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5832 5833
   "(Deprecated): Only use one thread (for debugging under Linux). Use "
   "thread-handling=no-threads instead.",
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5834
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
5835
  {"old-style-user-limits", 0,
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5836 5837
   "Enable old-style user limits (before 5.0.3, user resources were counted "
   "per each user+host vs. per account).",
5838
   &opt_old_style_user_limits, &opt_old_style_user_limits,
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5839
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
5840
  {"port-open-timeout", 0,
5841
   "Maximum time in seconds to wait for the port to become free. "
5842 5843
   "(Default: No wait).", &mysqld_port_timeout, &mysqld_port_timeout, 0,
   GET_UINT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
5844
  {"replicate-do-db", OPT_REPLICATE_DO_DB,
5845 5846 5847 5848 5849 5850 5851
   "Tells the slave thread to restrict replication to the specified database. "
   "To specify more than one database, use the directive multiple times, "
   "once for each database. Note that this will only work if you do not use "
   "cross-database queries such as UPDATE some_db.some_table SET foo='bar' "
   "while having selected a different or no database. If you need cross "
   "database updates to work, make sure you have 3.23.28 or later, and use "
   "replicate-wild-do-table=db_name.%.",
5852 5853
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"replicate-do-table", OPT_REPLICATE_DO_TABLE,
5854 5855 5856 5857
   "Tells the slave thread to restrict replication to the specified table. "
   "To specify more than one table, use the directive multiple times, once "
   "for each table. This will work for cross-database updates, in contrast "
   "to replicate-do-db.", 0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
5858
  {"replicate-ignore-db", OPT_REPLICATE_IGNORE_DB,
5859 5860 5861 5862 5863 5864
   "Tells the slave thread to not replicate to the specified database. To "
   "specify more than one database to ignore, use the directive multiple "
   "times, once for each database. This option will not work if you use "
   "cross database updates. If you need cross database updates to work, "
   "make sure you have 3.23.28 or later, and use replicate-wild-ignore-"
   "table=db_name.%. ", 0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
5865
  {"replicate-ignore-table", OPT_REPLICATE_IGNORE_TABLE,
5866 5867 5868
   "Tells the slave thread to not replicate to the specified table. To specify "
   "more than one table to ignore, use the directive multiple times, once for "
   "each table. This will work for cross-database updates, in contrast to "
5869
   "replicate-ignore-db.", 0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
5870
  {"replicate-rewrite-db", OPT_REPLICATE_REWRITE_DB,
5871 5872
   "Updates to a database with a different name than the original. Example: "
   "replicate-rewrite-db=master_db_name->slave_db_name.",
5873
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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5874
#ifdef HAVE_REPLICATION
5875
  {"replicate-same-server-id", 0,
5876 5877 5878 5879
   "In replication, if set to 1, do not skip events having our server id. "
   "Default value is 0 (to break infinite loops in circular replication). "
   "Can't be set to 1 if --log-slave-updates is used.",
   &replicate_same_server_id, &replicate_same_server_id,
5880
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
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5881
#endif
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5882
  {"replicate-wild-do-table", OPT_REPLICATE_WILD_DO_TABLE,
5883 5884 5885 5886 5887 5888
   "Tells the slave thread to restrict replication to the tables that match "
   "the specified wildcard pattern. To specify more than one table, use the "
   "directive multiple times, once for each table. This will work for cross-"
   "database updates. Example: replicate-wild-do-table=foo%.bar% will "
   "replicate only updates to tables in all databases that start with foo "
   "and whose table names start with bar.",
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5889 5890
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"replicate-wild-ignore-table", OPT_REPLICATE_WILD_IGNORE_TABLE,
5891 5892 5893 5894 5895 5896
   "Tells the slave thread to not replicate to the tables that match the "
   "given wildcard pattern. To specify more than one table to ignore, use "
   "the directive multiple times, once for each table. This will work for "
   "cross-database updates. Example: replicate-wild-ignore-table=foo%.bar% "
   "will not do updates to tables in databases that start with foo and whose "
   "table names start with bar.",
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5897
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
5898 5899
  {"safe-mode", OPT_SAFE, "Skip some optimize stages (for testing).",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
5900
  {"safe-user-create", 0,
5901
   "Don't allow new user creation by the user who has no write privileges to the mysql.user table.",
5902
   &opt_safe_user_create, &opt_safe_user_create, 0, GET_BOOL,
5903
   NO_ARG, 0, 0, 0, 0, 0, 0},
5904
  {"show-slave-auth-info", 0,
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5905
   "Show user and password in SHOW SLAVE HOSTS on this master.",
5906
   &opt_show_slave_auth_info, &opt_show_slave_auth_info, 0,
5907
   GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
5908
#ifndef DISABLE_GRANT_OPTIONS
5909
  {"skip-grant-tables", 0,
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5910
   "Start without grant tables. This gives all users FULL ACCESS to all tables.",
5911
   &opt_noacl, &opt_noacl, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0,
5912
   0},
5913
#endif
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5914 5915
  {"skip-host-cache", OPT_SKIP_HOST_CACHE, "Don't cache host names.", 0, 0, 0,
   GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
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5916
  {"skip-new", OPT_SKIP_NEW, "Don't use new, possibly wrong routines.",
5917
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
5918
  {"skip-slave-start", 0,
5919 5920
   "If set, slave is not autostarted.", &opt_skip_slave_start,
   &opt_skip_slave_start, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
5921
  {"skip-stack-trace", OPT_SKIP_STACK_TRACE,
5922
   "Don't print a stack trace on failure.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0,
5923 5924
   0, 0, 0, 0},
  {"skip-thread-priority", OPT_SKIP_PRIOR,
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Konstantin Osipov committed
5925 5926 5927
   "Don't give threads different priorities. This option is deprecated "
   "because it has no effect; the implied behavior is already the default.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
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5928
#ifdef HAVE_REPLICATION
5929
  {"sporadic-binlog-dump-fail", 0,
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5930
   "Option used by mysql-test for debugging and testing of replication.",
5931 5932
   &opt_sporadic_binlog_dump_fail,
   &opt_sporadic_binlog_dump_fail, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0,
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5933 5934
   0},
#endif /* HAVE_REPLICATION */
5935
#ifdef HAVE_OPENSSL
5936 5937
  {"ssl", 0,
   "Enable SSL for connection (automatically enabled with other flags).",
5938
   &opt_use_ssl, &opt_use_ssl, 0, GET_BOOL, OPT_ARG, 0, 0, 0,
5939
   0, 0, 0},
5940
#endif
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5941
#ifdef __WIN__
5942
  {"standalone", 0,
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5943 5944 5945 5946
  "Dummy option to start as a standalone program (NT).", 0, 0, 0, GET_NO_ARG,
   NO_ARG, 0, 0, 0, 0, 0, 0},
#endif
  {"symbolic-links", 's', "Enable symbolic link support.",
5947
   &my_use_symdir, &my_use_symdir, 0, GET_BOOL, NO_ARG,
5948 5949 5950 5951 5952
   /*
     The system call realpath() produces warnings under valgrind and
     purify. These are not suppressed: instead we disable symlinks
     option if compiled with valgrind support.
   */
5953
   IF_PURIFY(0,1), 0, 0, 0, 0, 0},
5954
  {"sysdate-is-now", 0,
5955 5956 5957 5958
   "Non-default option to alias SYSDATE() to NOW() to make it safe-replicable. "
   "Since 5.0, SYSDATE() returns a `dynamic' value different for different "
   "invocations, even within the same statement.",
   &global_system_variables.sysdate_is_now,
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5959
   0, 0, GET_BOOL, NO_ARG, 0, 0, 1, 0, 1, 0},
5960
  {"tc-heuristic-recover", 0,
5961
   "Decision to use in heuristic recover process. Possible values are COMMIT "
5962
   "or ROLLBACK.", &tc_heuristic_recover, &tc_heuristic_recover,
5963
   &tc_heuristic_recover_typelib, GET_ENUM, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
5964 5965 5966 5967 5968
#if defined(ENABLED_DEBUG_SYNC)
  {"debug-sync-timeout", OPT_DEBUG_SYNC_TIMEOUT,
   "Enable the debug sync facility "
   "and optionally specify a default wait timeout in seconds. "
   "A zero value keeps the facility disabled.",
5969
   &opt_debug_sync_timeout, 0,
5970 5971
   0, GET_UINT, OPT_ARG, 0, 0, UINT_MAX, 0, 0, 0},
#endif /* defined(ENABLED_DEBUG_SYNC) */
5972
  {"temp-pool", 0,
5973
#if (ENABLE_TEMP_POOL)
5974 5975
   "Using this option will cause most temporary files created to use a small "
   "set of names, rather than a unique name for each new file.",
5976 5977 5978
#else
   "This option is ignored on this OS.",
#endif
5979
   &use_temp_pool, &use_temp_pool, 0, GET_BOOL, NO_ARG, 1,
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unknown committed
5980
   0, 0, 0, 0, 0},
5981 5982
  {"transaction-isolation", 0,
   "Default transaction isolation level.",
5983 5984
   &global_system_variables.tx_isolation,
   &global_system_variables.tx_isolation, &tx_isolation_typelib,
5985
   GET_ENUM, REQUIRED_ARG, ISO_REPEATABLE_READ, 0, 0, 0, 0, 0},
5986
  {"user", 'u', "Run mysqld daemon as user.", 0, 0, 0, GET_STR, REQUIRED_ARG,
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unknown committed
5987
   0, 0, 0, 0, 0, 0},
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5988
  {"verbose", 'v', "Used with --help option for detailed help.",
5989
   &opt_verbose, &opt_verbose, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
5990
  {"version", 'V', "Output version information and exit.", 0, 0, 0, GET_NO_ARG,
5991
   NO_ARG, 0, 0, 0, 0, 0, 0},
5992
  {"plugin-load", 0,
5993
   "Optional semicolon-separated list of plugins to load, where each plugin is "
5994 5995
   "identified as name=library, where name is the plugin name and library "
   "is the plugin library in plugin_dir.",
5996
   &opt_plugin_load, &opt_plugin_load, 0,
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unknown committed
5997
   GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
5998
  {"table_cache", 0, "Deprecated; use --table-open-cache instead.",
5999
   &table_cache_size, &table_cache_size, 0, GET_ULONG,
6000
   REQUIRED_ARG, TABLE_OPEN_CACHE_DEFAULT, 1, 512*1024L, 0, 1, 0},
6001
  {0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
6002
};
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6003

6004

6005
static int show_queries(THD *thd, SHOW_VAR *var, char *buff)
6006
{
6007
  var->type= SHOW_LONGLONG;
6008 6009 6010 6011
  var->value= (char *)&thd->query_id;
  return 0;
}

6012

6013
static int show_net_compression(THD *thd, SHOW_VAR *var, char *buff)
6014
{
6015
  var->type= SHOW_MY_BOOL;
6016 6017 6018 6019
  var->value= (char *)&thd->net.compress;
  return 0;
}

6020
static int show_starttime(THD *thd, SHOW_VAR *var, char *buff)
6021
{
6022
  var->type= SHOW_LONG;
6023
  var->value= buff;
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6024
  *((long *)buff)= (long) (thd->query_start() - server_start_time);
6025 6026 6027
  return 0;
}

6028
#ifdef ENABLED_PROFILING
6029 6030 6031 6032 6033 6034 6035
static int show_flushstatustime(THD *thd, SHOW_VAR *var, char *buff)
{
  var->type= SHOW_LONG;
  var->value= buff;
  *((long *)buff)= (long) (thd->query_start() - flush_status_time);
  return 0;
}
6036
#endif
6037

6038
#ifdef HAVE_REPLICATION
6039
static int show_rpl_status(THD *thd, SHOW_VAR *var, char *buff)
6040
{
6041
  var->type= SHOW_CHAR;
6042 6043 6044 6045
  var->value= const_cast<char*>(rpl_status_type[(int)rpl_status]);
  return 0;
}

6046
static int show_slave_running(THD *thd, SHOW_VAR *var, char *buff)
6047
{
6048
  var->type= SHOW_MY_BOOL;
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6049
  mysql_mutex_lock(&LOCK_active_mi);
6050
  var->value= buff;
6051 6052
  *((my_bool *)buff)= (my_bool) (active_mi && 
                                 active_mi->slave_running == MYSQL_SLAVE_RUN_CONNECT &&
6053
                                 active_mi->rli.slave_running);
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Marc Alff committed
6054
  mysql_mutex_unlock(&LOCK_active_mi);
6055 6056 6057
  return 0;
}

6058
static int show_slave_retried_trans(THD *thd, SHOW_VAR *var, char *buff)
6059 6060 6061 6062 6063
{
  /*
    TODO: with multimaster, have one such counter per line in
    SHOW SLAVE STATUS, and have the sum over all lines here.
  */
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Marc Alff committed
6064
  mysql_mutex_lock(&LOCK_active_mi);
6065 6066
  if (active_mi)
  {
6067
    var->type= SHOW_LONG;
6068
    var->value= buff;
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Marc Alff committed
6069
    mysql_mutex_lock(&active_mi->rli.data_lock);
6070
    *((long *)buff)= (long)active_mi->rli.retried_trans;
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Marc Alff committed
6071
    mysql_mutex_unlock(&active_mi->rli.data_lock);
6072 6073
  }
  else
6074
    var->type= SHOW_UNDEF;
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Marc Alff committed
6075
  mysql_mutex_unlock(&LOCK_active_mi);
6076 6077
  return 0;
}
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6078 6079 6080

static int show_slave_received_heartbeats(THD *thd, SHOW_VAR *var, char *buff)
{
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6081
  mysql_mutex_lock(&LOCK_active_mi);
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6082 6083 6084 6085
  if (active_mi)
  {
    var->type= SHOW_LONGLONG;
    var->value= buff;
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Marc Alff committed
6086
    mysql_mutex_lock(&active_mi->rli.data_lock);
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Andrei Elkin committed
6087
    *((longlong *)buff)= active_mi->received_heartbeats;
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6088
    mysql_mutex_unlock(&active_mi->rli.data_lock);
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6089 6090 6091
  }
  else
    var->type= SHOW_UNDEF;
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6092
  mysql_mutex_unlock(&LOCK_active_mi);
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6093 6094 6095 6096 6097
  return 0;
}

static int show_heartbeat_period(THD *thd, SHOW_VAR *var, char *buff)
{
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Marc Alff committed
6098
  mysql_mutex_lock(&LOCK_active_mi);
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Andrei Elkin committed
6099 6100 6101 6102
  if (active_mi)
  {
    var->type= SHOW_CHAR;
    var->value= buff;
6103
    sprintf(buff, "%.3f", active_mi->heartbeat_period);
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6104 6105 6106
  }
  else
    var->type= SHOW_UNDEF;
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Marc Alff committed
6107
  mysql_mutex_unlock(&LOCK_active_mi);
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6108 6109 6110 6111
  return 0;
}


6112 6113
#endif /* HAVE_REPLICATION */

6114
static int show_open_tables(THD *thd, SHOW_VAR *var, char *buff)
6115
{
6116
  var->type= SHOW_LONG;
6117 6118 6119 6120 6121
  var->value= buff;
  *((long *)buff)= (long)cached_open_tables();
  return 0;
}

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6122 6123 6124 6125
static int show_prepared_stmt_count(THD *thd, SHOW_VAR *var, char *buff)
{
  var->type= SHOW_LONG;
  var->value= buff;
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6126
  mysql_mutex_lock(&LOCK_prepared_stmt_count);
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6127
  *((long *)buff)= (long)prepared_stmt_count;
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6128
  mysql_mutex_unlock(&LOCK_prepared_stmt_count);
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6129 6130 6131
  return 0;
}

6132
static int show_table_definitions(THD *thd, SHOW_VAR *var, char *buff)
6133
{
6134
  var->type= SHOW_LONG;
6135 6136 6137 6138 6139
  var->value= buff;
  *((long *)buff)= (long)cached_table_definitions();
  return 0;
}

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6140
#if defined(HAVE_OPENSSL) && !defined(EMBEDDED_LIBRARY)
6141
/* Functions relying on CTX */
6142
static int show_ssl_ctx_sess_accept(THD *thd, SHOW_VAR *var, char *buff)
6143
{
6144
  var->type= SHOW_LONG;
6145 6146 6147 6148 6149 6150
  var->value= buff;
  *((long *)buff)= (!ssl_acceptor_fd ? 0 :
                     SSL_CTX_sess_accept(ssl_acceptor_fd->ssl_context));
  return 0;
}

6151
static int show_ssl_ctx_sess_accept_good(THD *thd, SHOW_VAR *var, char *buff)
6152
{
6153
  var->type= SHOW_LONG;
6154 6155 6156 6157 6158 6159
  var->value= buff;
  *((long *)buff)= (!ssl_acceptor_fd ? 0 :
                     SSL_CTX_sess_accept_good(ssl_acceptor_fd->ssl_context));
  return 0;
}

6160
static int show_ssl_ctx_sess_connect_good(THD *thd, SHOW_VAR *var, char *buff)
6161
{
6162
  var->type= SHOW_LONG;
6163 6164 6165 6166 6167 6168
  var->value= buff;
  *((long *)buff)= (!ssl_acceptor_fd ? 0 :
                     SSL_CTX_sess_connect_good(ssl_acceptor_fd->ssl_context));
  return 0;
}

6169
static int show_ssl_ctx_sess_accept_renegotiate(THD *thd, SHOW_VAR *var, char *buff)
6170
{
6171
  var->type= SHOW_LONG;
6172 6173 6174 6175 6176 6177
  var->value= buff;
  *((long *)buff)= (!ssl_acceptor_fd ? 0 :
                     SSL_CTX_sess_accept_renegotiate(ssl_acceptor_fd->ssl_context));
  return 0;
}

6178
static int show_ssl_ctx_sess_connect_renegotiate(THD *thd, SHOW_VAR *var, char *buff)
6179
{
6180
  var->type= SHOW_LONG;
6181 6182 6183 6184 6185 6186
  var->value= buff;
  *((long *)buff)= (!ssl_acceptor_fd ? 0 :
                     SSL_CTX_sess_connect_renegotiate(ssl_acceptor_fd->ssl_context));
  return 0;
}

6187
static int show_ssl_ctx_sess_cb_hits(THD *thd, SHOW_VAR *var, char *buff)
6188
{
6189
  var->type= SHOW_LONG;
6190 6191 6192 6193 6194 6195
  var->value= buff;
  *((long *)buff)= (!ssl_acceptor_fd ? 0 :
                     SSL_CTX_sess_cb_hits(ssl_acceptor_fd->ssl_context));
  return 0;
}

6196
static int show_ssl_ctx_sess_hits(THD *thd, SHOW_VAR *var, char *buff)
6197
{
6198
  var->type= SHOW_LONG;
6199 6200 6201 6202 6203 6204
  var->value= buff;
  *((long *)buff)= (!ssl_acceptor_fd ? 0 :
                     SSL_CTX_sess_hits(ssl_acceptor_fd->ssl_context));
  return 0;
}

6205
static int show_ssl_ctx_sess_cache_full(THD *thd, SHOW_VAR *var, char *buff)
6206
{
6207
  var->type= SHOW_LONG;
6208 6209 6210 6211 6212 6213
  var->value= buff;
  *((long *)buff)= (!ssl_acceptor_fd ? 0 :
                     SSL_CTX_sess_cache_full(ssl_acceptor_fd->ssl_context));
  return 0;
}

6214
static int show_ssl_ctx_sess_misses(THD *thd, SHOW_VAR *var, char *buff)
6215
{
6216
  var->type= SHOW_LONG;
6217 6218 6219 6220 6221 6222
  var->value= buff;
  *((long *)buff)= (!ssl_acceptor_fd ? 0 :
                     SSL_CTX_sess_misses(ssl_acceptor_fd->ssl_context));
  return 0;
}

6223
static int show_ssl_ctx_sess_timeouts(THD *thd, SHOW_VAR *var, char *buff)
6224
{
6225
  var->type= SHOW_LONG;
6226 6227 6228 6229 6230 6231
  var->value= buff;
  *((long *)buff)= (!ssl_acceptor_fd ? 0 :
                     SSL_CTX_sess_timeouts(ssl_acceptor_fd->ssl_context));
  return 0;
}

6232
static int show_ssl_ctx_sess_number(THD *thd, SHOW_VAR *var, char *buff)
6233
{
6234
  var->type= SHOW_LONG;
6235 6236 6237 6238 6239 6240
  var->value= buff;
  *((long *)buff)= (!ssl_acceptor_fd ? 0 :
                     SSL_CTX_sess_number(ssl_acceptor_fd->ssl_context));
  return 0;
}

6241
static int show_ssl_ctx_sess_connect(THD *thd, SHOW_VAR *var, char *buff)
6242
{
6243
  var->type= SHOW_LONG;
6244 6245 6246 6247 6248 6249
  var->value= buff;
  *((long *)buff)= (!ssl_acceptor_fd ? 0 :
                     SSL_CTX_sess_connect(ssl_acceptor_fd->ssl_context));
  return 0;
}

6250
static int show_ssl_ctx_sess_get_cache_size(THD *thd, SHOW_VAR *var, char *buff)
6251
{
6252
  var->type= SHOW_LONG;
6253 6254 6255 6256 6257 6258
  var->value= buff;
  *((long *)buff)= (!ssl_acceptor_fd ? 0 :
                     SSL_CTX_sess_get_cache_size(ssl_acceptor_fd->ssl_context));
  return 0;
}

6259
static int show_ssl_ctx_get_verify_mode(THD *thd, SHOW_VAR *var, char *buff)
6260
{
6261
  var->type= SHOW_LONG;
6262 6263 6264 6265 6266 6267
  var->value= buff;
  *((long *)buff)= (!ssl_acceptor_fd ? 0 :
                     SSL_CTX_get_verify_mode(ssl_acceptor_fd->ssl_context));
  return 0;
}

6268
static int show_ssl_ctx_get_verify_depth(THD *thd, SHOW_VAR *var, char *buff)
6269
{
6270
  var->type= SHOW_LONG;
6271 6272 6273 6274 6275 6276
  var->value= buff;
  *((long *)buff)= (!ssl_acceptor_fd ? 0 :
                     SSL_CTX_get_verify_depth(ssl_acceptor_fd->ssl_context));
  return 0;
}

6277
static int show_ssl_ctx_get_session_cache_mode(THD *thd, SHOW_VAR *var, char *buff)
6278
{
6279
  var->type= SHOW_CHAR;
6280
  if (!ssl_acceptor_fd)
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6281
    var->value= const_cast<char*>("NONE");
6282 6283 6284 6285
  else
    switch (SSL_CTX_get_session_cache_mode(ssl_acceptor_fd->ssl_context))
    {
    case SSL_SESS_CACHE_OFF:
unknown's avatar
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6286
      var->value= const_cast<char*>("OFF"); break;
6287
    case SSL_SESS_CACHE_CLIENT:
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6288
      var->value= const_cast<char*>("CLIENT"); break;
6289
    case SSL_SESS_CACHE_SERVER:
unknown's avatar
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6290
      var->value= const_cast<char*>("SERVER"); break;
6291
    case SSL_SESS_CACHE_BOTH:
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6292
      var->value= const_cast<char*>("BOTH"); break;
6293
    case SSL_SESS_CACHE_NO_AUTO_CLEAR:
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unknown committed
6294
      var->value= const_cast<char*>("NO_AUTO_CLEAR"); break;
6295
    case SSL_SESS_CACHE_NO_INTERNAL_LOOKUP:
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6296
      var->value= const_cast<char*>("NO_INTERNAL_LOOKUP"); break;
6297
    default:
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6298
      var->value= const_cast<char*>("Unknown"); break;
6299 6300 6301 6302
    }
  return 0;
}

6303 6304 6305 6306 6307 6308 6309
/*
   Functions relying on SSL 
   Note: In the show_ssl_* functions, we need to check if we have a
         valid vio-object since this isn't always true, specifically
         when session_status or global_status is requested from
         inside an Event.
 */
6310
static int show_ssl_get_version(THD *thd, SHOW_VAR *var, char *buff)
6311
{
6312
  var->type= SHOW_CHAR;
6313 6314 6315
  if( thd->vio_ok() && thd->net.vio->ssl_arg )
    var->value= const_cast<char*>(SSL_get_version((SSL*) thd->net.vio->ssl_arg));
  else
6316
    var->value= (char *)"";
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  return 0;
}

6320
static int show_ssl_session_reused(THD *thd, SHOW_VAR *var, char *buff)
6321
{
6322
  var->type= SHOW_LONG;
6323
  var->value= buff;
6324 6325 6326 6327
  if( thd->vio_ok() && thd->net.vio->ssl_arg )
    *((long *)buff)= (long)SSL_session_reused((SSL*) thd->net.vio->ssl_arg);
  else
    *((long *)buff)= 0;
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6328
  return 0;
6329 6330
}

6331
static int show_ssl_get_default_timeout(THD *thd, SHOW_VAR *var, char *buff)
6332
{
6333
  var->type= SHOW_LONG;
6334
  var->value= buff;
6335 6336 6337 6338
  if( thd->vio_ok() && thd->net.vio->ssl_arg )
    *((long *)buff)= (long)SSL_get_default_timeout((SSL*)thd->net.vio->ssl_arg);
  else
    *((long *)buff)= 0;
6339 6340 6341
  return 0;
}

6342
static int show_ssl_get_verify_mode(THD *thd, SHOW_VAR *var, char *buff)
6343
{
6344
  var->type= SHOW_LONG;
6345
  var->value= buff;
6346 6347 6348 6349
  if( thd->net.vio && thd->net.vio->ssl_arg )
    *((long *)buff)= (long)SSL_get_verify_mode((SSL*)thd->net.vio->ssl_arg);
  else
    *((long *)buff)= 0;
6350 6351 6352
  return 0;
}

6353
static int show_ssl_get_verify_depth(THD *thd, SHOW_VAR *var, char *buff)
6354
{
6355
  var->type= SHOW_LONG;
6356
  var->value= buff;
6357 6358 6359 6360
  if( thd->vio_ok() && thd->net.vio->ssl_arg )
    *((long *)buff)= (long)SSL_get_verify_depth((SSL*)thd->net.vio->ssl_arg);
  else
    *((long *)buff)= 0;
6361 6362 6363
  return 0;
}

6364
static int show_ssl_get_cipher(THD *thd, SHOW_VAR *var, char *buff)
6365
{
6366
  var->type= SHOW_CHAR;
6367 6368 6369
  if( thd->vio_ok() && thd->net.vio->ssl_arg )
    var->value= const_cast<char*>(SSL_get_cipher((SSL*) thd->net.vio->ssl_arg));
  else
6370
    var->value= (char *)"";
6371 6372 6373
  return 0;
}

6374
static int show_ssl_get_cipher_list(THD *thd, SHOW_VAR *var, char *buff)
6375
{
6376
  var->type= SHOW_CHAR;
6377
  var->value= buff;
6378
  if (thd->vio_ok() && thd->net.vio->ssl_arg)
6379 6380 6381
  {
    int i;
    const char *p;
6382 6383 6384
    char *end= buff + SHOW_VAR_FUNC_BUFF_SIZE;
    for (i=0; (p= SSL_get_cipher_list((SSL*) thd->net.vio->ssl_arg,i)) &&
               buff < end; i++)
6385
    {
6386
      buff= strnmov(buff, p, end-buff-1);
6387 6388 6389 6390 6391 6392 6393 6394 6395
      *buff++= ':';
    }
    if (i)
      buff--;
  }
  *buff=0;
  return 0;
}

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6396
#endif /* HAVE_OPENSSL && !EMBEDDED_LIBRARY */
6397

6398

6399 6400 6401 6402
/*
  Variables shown by SHOW STATUS in alphabetical order
*/

6403
SHOW_VAR status_vars[]= {
6404 6405
  {"Aborted_clients",          (char*) &aborted_threads,        SHOW_LONG},
  {"Aborted_connects",         (char*) &aborted_connects,       SHOW_LONG},
6406 6407
  {"Binlog_cache_disk_use",    (char*) &binlog_cache_disk_use,  SHOW_LONG},
  {"Binlog_cache_use",         (char*) &binlog_cache_use,       SHOW_LONG},
6408 6409
  {"Bytes_received",           (char*) offsetof(STATUS_VAR, bytes_received), SHOW_LONGLONG_STATUS},
  {"Bytes_sent",               (char*) offsetof(STATUS_VAR, bytes_sent), SHOW_LONGLONG_STATUS},
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6410
  {"Com",                      (char*) com_status_vars, SHOW_ARRAY},
6411
  {"Compression",              (char*) &show_net_compression, SHOW_FUNC},
6412
  {"Connections",              (char*) &thread_id,              SHOW_LONG_NOFLUSH},
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6413
  {"Created_tmp_disk_tables",  (char*) offsetof(STATUS_VAR, created_tmp_disk_tables), SHOW_LONG_STATUS},
6414
  {"Created_tmp_files",	       (char*) &my_tmp_file_created,	SHOW_LONG},
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Merge  
unknown committed
6415
  {"Created_tmp_tables",       (char*) offsetof(STATUS_VAR, created_tmp_tables), SHOW_LONG_STATUS},
6416
  {"Delayed_errors",           (char*) &delayed_insert_errors,  SHOW_LONG},
6417
  {"Delayed_insert_threads",   (char*) &delayed_insert_threads, SHOW_LONG_NOFLUSH},
6418
  {"Delayed_writes",           (char*) &delayed_insert_writes,  SHOW_LONG},
6419
  {"Flush_commands",           (char*) &refresh_version,        SHOW_LONG_NOFLUSH},
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6420 6421 6422 6423 6424 6425
  {"Handler_commit",           (char*) offsetof(STATUS_VAR, ha_commit_count), SHOW_LONG_STATUS},
  {"Handler_delete",           (char*) offsetof(STATUS_VAR, ha_delete_count), SHOW_LONG_STATUS},
  {"Handler_discover",         (char*) offsetof(STATUS_VAR, ha_discover_count), SHOW_LONG_STATUS},
  {"Handler_prepare",          (char*) offsetof(STATUS_VAR, ha_prepare_count),  SHOW_LONG_STATUS},
  {"Handler_read_first",       (char*) offsetof(STATUS_VAR, ha_read_first_count), SHOW_LONG_STATUS},
  {"Handler_read_key",         (char*) offsetof(STATUS_VAR, ha_read_key_count), SHOW_LONG_STATUS},
6426
  {"Handler_read_last",        (char*) offsetof(STATUS_VAR, ha_read_last_count), SHOW_LONG_STATUS},
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6427 6428 6429 6430 6431 6432 6433 6434 6435
  {"Handler_read_next",        (char*) offsetof(STATUS_VAR, ha_read_next_count), SHOW_LONG_STATUS},
  {"Handler_read_prev",        (char*) offsetof(STATUS_VAR, ha_read_prev_count), SHOW_LONG_STATUS},
  {"Handler_read_rnd",         (char*) offsetof(STATUS_VAR, ha_read_rnd_count), SHOW_LONG_STATUS},
  {"Handler_read_rnd_next",    (char*) offsetof(STATUS_VAR, ha_read_rnd_next_count), SHOW_LONG_STATUS},
  {"Handler_rollback",         (char*) offsetof(STATUS_VAR, ha_rollback_count), SHOW_LONG_STATUS},
  {"Handler_savepoint",        (char*) offsetof(STATUS_VAR, ha_savepoint_count), SHOW_LONG_STATUS},
  {"Handler_savepoint_rollback",(char*) offsetof(STATUS_VAR, ha_savepoint_rollback_count), SHOW_LONG_STATUS},
  {"Handler_update",           (char*) offsetof(STATUS_VAR, ha_update_count), SHOW_LONG_STATUS},
  {"Handler_write",            (char*) offsetof(STATUS_VAR, ha_write_count), SHOW_LONG_STATUS},
6436
  {"Key_blocks_not_flushed",   (char*) offsetof(KEY_CACHE, global_blocks_changed), SHOW_KEY_CACHE_LONG},
6437 6438
  {"Key_blocks_unused",        (char*) offsetof(KEY_CACHE, blocks_unused), SHOW_KEY_CACHE_LONG},
  {"Key_blocks_used",          (char*) offsetof(KEY_CACHE, blocks_used), SHOW_KEY_CACHE_LONG},
6439 6440 6441 6442
  {"Key_read_requests",        (char*) offsetof(KEY_CACHE, global_cache_r_requests), SHOW_KEY_CACHE_LONGLONG},
  {"Key_reads",                (char*) offsetof(KEY_CACHE, global_cache_read), SHOW_KEY_CACHE_LONGLONG},
  {"Key_write_requests",       (char*) offsetof(KEY_CACHE, global_cache_w_requests), SHOW_KEY_CACHE_LONGLONG},
  {"Key_writes",               (char*) offsetof(KEY_CACHE, global_cache_write), SHOW_KEY_CACHE_LONGLONG},
6443
  {"Last_query_cost",          (char*) offsetof(STATUS_VAR, last_query_cost), SHOW_DOUBLE_STATUS},
6444
  {"Max_used_connections",     (char*) &max_used_connections,  SHOW_LONG},
6445 6446 6447
  {"Not_flushed_delayed_rows", (char*) &delayed_rows_in_use,    SHOW_LONG_NOFLUSH},
  {"Open_files",               (char*) &my_file_opened,         SHOW_LONG_NOFLUSH},
  {"Open_streams",             (char*) &my_stream_opened,       SHOW_LONG_NOFLUSH},
6448 6449
  {"Open_table_definitions",   (char*) &show_table_definitions, SHOW_FUNC},
  {"Open_tables",              (char*) &show_open_tables,       SHOW_FUNC},
6450
  {"Opened_files",             (char*) &my_file_total_opened, SHOW_LONG_NOFLUSH},
unknown's avatar
Merge  
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6451
  {"Opened_tables",            (char*) offsetof(STATUS_VAR, opened_tables), SHOW_LONG_STATUS},
6452
  {"Opened_table_definitions", (char*) offsetof(STATUS_VAR, opened_shares), SHOW_LONG_STATUS},
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unknown committed
6453
  {"Prepared_stmt_count",      (char*) &show_prepared_stmt_count, SHOW_FUNC},
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unknown committed
6454
#ifdef HAVE_QUERY_CACHE
6455 6456
  {"Qcache_free_blocks",       (char*) &query_cache.free_memory_blocks, SHOW_LONG_NOFLUSH},
  {"Qcache_free_memory",       (char*) &query_cache.free_memory, SHOW_LONG_NOFLUSH},
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6457
  {"Qcache_hits",              (char*) &query_cache.hits,       SHOW_LONG},
6458
  {"Qcache_inserts",           (char*) &query_cache.inserts,    SHOW_LONG},
6459
  {"Qcache_lowmem_prunes",     (char*) &query_cache.lowmem_prunes, SHOW_LONG},
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unknown committed
6460
  {"Qcache_not_cached",        (char*) &query_cache.refused,    SHOW_LONG},
6461 6462
  {"Qcache_queries_in_cache",  (char*) &query_cache.queries_in_cache, SHOW_LONG_NOFLUSH},
  {"Qcache_total_blocks",      (char*) &query_cache.total_blocks, SHOW_LONG_NOFLUSH},
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6463
#endif /*HAVE_QUERY_CACHE*/
6464
  {"Queries",                  (char*) &show_queries,            SHOW_FUNC},
6465
  {"Questions",                (char*) offsetof(STATUS_VAR, questions), SHOW_LONG_STATUS},
6466 6467 6468
#ifdef HAVE_REPLICATION
  {"Rpl_status",               (char*) &show_rpl_status,          SHOW_FUNC},
#endif
unknown's avatar
Merge  
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6469 6470 6471 6472 6473
  {"Select_full_join",         (char*) offsetof(STATUS_VAR, select_full_join_count), SHOW_LONG_STATUS},
  {"Select_full_range_join",   (char*) offsetof(STATUS_VAR, select_full_range_join_count), SHOW_LONG_STATUS},
  {"Select_range",             (char*) offsetof(STATUS_VAR, select_range_count), SHOW_LONG_STATUS},
  {"Select_range_check",       (char*) offsetof(STATUS_VAR, select_range_check_count), SHOW_LONG_STATUS},
  {"Select_scan",	       (char*) offsetof(STATUS_VAR, select_scan_count), SHOW_LONG_STATUS},
6474
  {"Slave_open_temp_tables",   (char*) &slave_open_temp_tables, SHOW_LONG},
6475 6476
#ifdef HAVE_REPLICATION
  {"Slave_retried_transactions",(char*) &show_slave_retried_trans, SHOW_FUNC},
Andrei Elkin's avatar
Andrei Elkin committed
6477 6478
  {"Slave_heartbeat_period",   (char*) &show_heartbeat_period, SHOW_FUNC},
  {"Slave_received_heartbeats",(char*) &show_slave_received_heartbeats, SHOW_FUNC},
6479 6480
  {"Slave_running",            (char*) &show_slave_running,     SHOW_FUNC},
#endif
6481
  {"Slow_launch_threads",      (char*) &slow_launch_threads,    SHOW_LONG},
unknown's avatar
Merge  
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6482 6483 6484 6485 6486
  {"Slow_queries",             (char*) offsetof(STATUS_VAR, long_query_count), SHOW_LONG_STATUS},
  {"Sort_merge_passes",	       (char*) offsetof(STATUS_VAR, filesort_merge_passes), SHOW_LONG_STATUS},
  {"Sort_range",	       (char*) offsetof(STATUS_VAR, filesort_range_count), SHOW_LONG_STATUS},
  {"Sort_rows",		       (char*) offsetof(STATUS_VAR, filesort_rows), SHOW_LONG_STATUS},
  {"Sort_scan",		       (char*) offsetof(STATUS_VAR, filesort_scan_count), SHOW_LONG_STATUS},
unknown's avatar
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6487
#ifdef HAVE_OPENSSL
Konstantin Osipov's avatar
Konstantin Osipov committed
6488
#ifndef EMBEDDED_LIBRARY
6489 6490 6491 6492 6493 6494 6495 6496 6497 6498 6499 6500 6501 6502 6503 6504 6505 6506 6507 6508 6509 6510 6511
  {"Ssl_accept_renegotiates",  (char*) &show_ssl_ctx_sess_accept_renegotiate, SHOW_FUNC},
  {"Ssl_accepts",              (char*) &show_ssl_ctx_sess_accept, SHOW_FUNC},
  {"Ssl_callback_cache_hits",  (char*) &show_ssl_ctx_sess_cb_hits, SHOW_FUNC},
  {"Ssl_cipher",               (char*) &show_ssl_get_cipher, SHOW_FUNC},
  {"Ssl_cipher_list",          (char*) &show_ssl_get_cipher_list, SHOW_FUNC},
  {"Ssl_client_connects",      (char*) &show_ssl_ctx_sess_connect, SHOW_FUNC},
  {"Ssl_connect_renegotiates", (char*) &show_ssl_ctx_sess_connect_renegotiate, SHOW_FUNC},
  {"Ssl_ctx_verify_depth",     (char*) &show_ssl_ctx_get_verify_depth, SHOW_FUNC},
  {"Ssl_ctx_verify_mode",      (char*) &show_ssl_ctx_get_verify_mode, SHOW_FUNC},
  {"Ssl_default_timeout",      (char*) &show_ssl_get_default_timeout, SHOW_FUNC},
  {"Ssl_finished_accepts",     (char*) &show_ssl_ctx_sess_accept_good, SHOW_FUNC},
  {"Ssl_finished_connects",    (char*) &show_ssl_ctx_sess_connect_good, SHOW_FUNC},
  {"Ssl_session_cache_hits",   (char*) &show_ssl_ctx_sess_hits, SHOW_FUNC},
  {"Ssl_session_cache_misses", (char*) &show_ssl_ctx_sess_misses, SHOW_FUNC},
  {"Ssl_session_cache_mode",   (char*) &show_ssl_ctx_get_session_cache_mode, SHOW_FUNC},
  {"Ssl_session_cache_overflows", (char*) &show_ssl_ctx_sess_cache_full, SHOW_FUNC},
  {"Ssl_session_cache_size",   (char*) &show_ssl_ctx_sess_get_cache_size, SHOW_FUNC},
  {"Ssl_session_cache_timeouts", (char*) &show_ssl_ctx_sess_timeouts, SHOW_FUNC},
  {"Ssl_sessions_reused",      (char*) &show_ssl_session_reused, SHOW_FUNC},
  {"Ssl_used_session_cache_entries",(char*) &show_ssl_ctx_sess_number, SHOW_FUNC},
  {"Ssl_verify_depth",         (char*) &show_ssl_get_verify_depth, SHOW_FUNC},
  {"Ssl_verify_mode",          (char*) &show_ssl_get_verify_mode, SHOW_FUNC},
  {"Ssl_version",              (char*) &show_ssl_get_version, SHOW_FUNC},
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6512
#endif
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6513
#endif /* HAVE_OPENSSL */
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6514 6515
  {"Table_locks_immediate",    (char*) &locks_immediate,        SHOW_LONG},
  {"Table_locks_waited",       (char*) &locks_waited,           SHOW_LONG},
6516
#ifdef HAVE_MMAP
unknown's avatar
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6517 6518 6519
  {"Tc_log_max_pages_used",    (char*) &tc_log_max_pages_used,  SHOW_LONG},
  {"Tc_log_page_size",         (char*) &tc_log_page_size,       SHOW_LONG},
  {"Tc_log_page_waits",        (char*) &tc_log_page_waits,      SHOW_LONG},
6520
#endif
6521
  {"Threads_cached",           (char*) &cached_thread_count,    SHOW_LONG_NOFLUSH},
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6522
  {"Threads_connected",        (char*) &connection_count,       SHOW_INT},
6523 6524
  {"Threads_created",	       (char*) &thread_created,		SHOW_LONG_NOFLUSH},
  {"Threads_running",          (char*) &thread_running,         SHOW_INT},
6525
  {"Uptime",                   (char*) &show_starttime,         SHOW_FUNC},
6526
#ifdef ENABLED_PROFILING
6527
  {"Uptime_since_flush_status",(char*) &show_flushstatustime,   SHOW_FUNC},
6528
#endif
6529
  {NullS, NullS, SHOW_LONG}
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6530 6531
};

Marc Alff's avatar
Marc Alff committed
6532
bool add_terminator(DYNAMIC_ARRAY *options)
6533 6534
{
  my_option empty_element= {0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0};
Marc Alff's avatar
Marc Alff committed
6535
  return insert_dynamic(options, (uchar *)&empty_element);
6536 6537
}

6538
#ifndef EMBEDDED_LIBRARY
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6539 6540
static void print_version(void)
{
6541
  set_server_version();
6542

6543 6544
  printf("%s  Ver %s for %s on %s (%s)\n",my_progname,
	 server_version,SYSTEM_TYPE,MACHINE_TYPE, MYSQL_COMPILATION_COMMENT);
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6545 6546
}

6547 6548 6549 6550 6551 6552 6553 6554 6555 6556 6557 6558 6559 6560 6561 6562 6563 6564 6565 6566 6567 6568 6569 6570 6571 6572 6573 6574 6575 6576 6577 6578
/** Compares two options' names, treats - and _ the same */
static int option_cmp(my_option *a, my_option *b)
{
  const char *sa= a->name;
  const char *sb= b->name;
  for (; *sa || *sb; sa++, sb++)
  {
    if (*sa < *sb)
    {
      if (*sa == '-' && *sb == '_')
        continue;
      else
        return -1;
    }
    if (*sa > *sb)
    {
      if (*sa == '_' && *sb == '-')
        continue;
      else
        return 1;
    }
  }
  DBUG_ASSERT(a->name == b->name);
  return 0;
}

static void print_help()
{
  MEM_ROOT mem_root;
  init_alloc_root(&mem_root, 4096, 4096);

  pop_dynamic(&all_options);
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Marc Alff committed
6579
  sys_var_add_options(&all_options, sys_var::PARSE_EARLY);
6580 6581
  add_plugin_options(&all_options, &mem_root);
  sort_dynamic(&all_options, (qsort_cmp) option_cmp);
Marc Alff's avatar
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6582
  add_terminator(&all_options);
6583 6584 6585 6586 6587 6588 6589 6590

  my_print_help((my_option*) all_options.buffer);
  my_print_variables((my_option*) all_options.buffer);

  free_root(&mem_root, MYF(0));
  delete_dynamic(&all_options);
}

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6591 6592
static void usage(void)
{
6593
  DBUG_ENTER("usage");
6594
  if (!(default_charset_info= get_charset_by_csname(default_character_set_name,
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6595 6596 6597 6598 6599
					           MY_CS_PRIMARY,
						   MYF(MY_WME))))
    exit(1);
  if (!default_collation_name)
    default_collation_name= (char*) default_charset_info->name;
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6600
  print_version();
6601 6602
  puts(ORACLE_WELCOME_COPYRIGHT_NOTICE("2000, 2010"));
  puts("Starts the MySQL database server.\n");
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6603
  printf("Usage: %s [OPTIONS]\n", my_progname);
6604
  if (!opt_verbose)
Staale Smedseng's avatar
Staale Smedseng committed
6605
    puts("\nFor more help options (several pages), use mysqld --verbose --help.");
6606 6607
  else
  {
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6608 6609
#ifdef __WIN__
  puts("NT and Win32 specific options:\n\
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Staale Smedseng committed
6610 6611 6612 6613 6614 6615 6616 6617
  --install                     Install the default service (NT).\n\
  --install-manual              Install the default service started manually (NT).\n\
  --install service_name        Install an optional service (NT).\n\
  --install-manual service_name Install an optional service started manually (NT).\n\
  --remove                      Remove the default service from the service list (NT).\n\
  --remove service_name         Remove the service_name from the service list (NT).\n\
  --enable-named-pipe           Only to be used for the default server (NT).\n\
  --standalone                  Dummy option to start as a standalone server (NT).\
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6618
");
6619
  puts("");
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6620
#endif
6621
  print_defaults(MYSQL_CONFIG_NAME,load_default_groups);
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6622 6623
  puts("");
  set_ports();
6624

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6625
  /* Print out all the options including plugin supplied options */
6626
  print_help();
6627

6628 6629 6630 6631 6632 6633 6634
  if (! plugins_are_initialized)
  {
    puts("\n\
Plugins have parameters that are not reflected in this list\n\
because execution stopped before plugins were initialized.");
  }

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6635
  puts("\n\
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6636
To see what values a running MySQL server is using, type\n\
6637
'mysqladmin variables' instead of 'mysqld --verbose --help'.");
6638
  }
6639
  DBUG_VOID_RETURN;
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6640
}
6641
#endif /*!EMBEDDED_LIBRARY*/
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6642

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6643
/**
6644
  Initialize MySQL global variables to default values.
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6645

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6646
  @note
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6647 6648 6649 6650
    The reason to set a lot of global variables to zero is to allow one to
    restart the embedded server with a clean environment
    It's also needed on some exotic platforms where global variables are
    not set to 0 when a program starts.
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6651

6652
    We don't need to set variables refered to in my_long_options
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6653 6654
    as these are initialized by my_getopt.
*/
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6655

6656
static int mysql_init_variables(void)
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6657 6658 6659 6660
{
  /* Things reset to zero */
  opt_skip_slave_start= opt_reckless_slave = 0;
  mysql_home[0]= pidfile_name[0]= log_error_file[0]= 0;
6661
  myisam_test_invalid_symlink= test_if_data_home_dir;
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6662
  opt_log= opt_slow_log= 0;
6663
  opt_bin_log= 0;
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6664
  opt_disable_networking= opt_skip_show_db=0;
6665
  opt_skip_name_resolve= 0;
6666
  opt_ignore_builtin_innodb= 0;
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6667 6668
  opt_logname= opt_update_logname= opt_binlog_index_name= opt_slow_logname= 0;
  opt_tc_log_file= (char *)"tc.log";      // no hostname in tc_log file name !
6669 6670
  opt_secure_auth= 0;
  opt_bootstrap= opt_myisam_log= 0;
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6671 6672 6673 6674 6675 6676 6677 6678 6679
  mqh_used= 0;
  segfaulted= kill_in_progress= 0;
  cleanup_done= 0;
  server_id_supplied= 0;
  test_flags= select_errors= dropping_tables= ha_open_options=0;
  thread_count= thread_running= kill_cached_threads= wake_thread=0;
  slave_open_temp_tables= 0;
  cached_thread_count= 0;
  opt_endinfo= using_udf_functions= 0;
6680
  opt_using_transactions= 0;
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6681 6682
  abort_loop= select_thread_in_use= signal_thread_in_use= 0;
  ready_to_exit= shutdown_in_progress= grant_option= 0;
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6683
  aborted_threads= aborted_connects= 0;
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  delayed_insert_threads= delayed_insert_writes= delayed_rows_in_use= 0;
  delayed_insert_errors= thread_created= 0;
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6686
  specialflag= 0;
6687
  binlog_cache_use=  binlog_cache_disk_use= 0;
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6688 6689
  max_used_connections= slow_launch_threads = 0;
  mysqld_user= mysqld_chroot= opt_init_file= opt_bin_logname = 0;
6690
  prepared_stmt_count= 0;
6691
  mysqld_unix_port= opt_mysql_tmpdir= my_bind_addr_str= NullS;
6692
  bzero((uchar*) &mysql_tmpdir_list, sizeof(mysql_tmpdir_list));
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6693
  bzero((char *) &global_status_var, sizeof(global_status_var));
6694
  opt_large_pages= 0;
6695
  opt_super_large_pages= 0;
6696 6697 6698
#if defined(ENABLED_DEBUG_SYNC)
  opt_debug_sync_timeout= 0;
#endif /* defined(ENABLED_DEBUG_SYNC) */
6699
  key_map_full.set_all();
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6700

6701 6702 6703 6704 6705
  /* Character sets */
  system_charset_info= &my_charset_utf8_general_ci;
  files_charset_info= &my_charset_utf8_general_ci;
  national_charset_info= &my_charset_utf8_general_ci;
  table_alias_charset= &my_charset_bin;
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6706
  character_set_filesystem= &my_charset_bin;
6707

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  opt_specialflag= SPECIAL_ENGLISH;
  unix_sock= ip_sock= INVALID_SOCKET;
  mysql_home_ptr= mysql_home;
  pidfile_name_ptr= pidfile_name;
  log_error_file_ptr= log_error_file;
6713
  lc_messages_dir_ptr= lc_messages_dir;
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6714 6715
  protocol_version= PROTOCOL_VERSION;
  what_to_log= ~ (1L << (uint) COM_TIME);
6716
  refresh_version= 1L;	/* Increments on each reload */
6717
  global_query_id= thread_id= 1L;
6718
  my_atomic_rwlock_init(&global_query_id_lock);
6719
  my_atomic_rwlock_init(&thread_running_lock);
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6720 6721 6722
  strmov(server_version, MYSQL_SERVER_VERSION);
  threads.empty();
  thread_cache.empty();
6723
  key_caches.empty();
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6724
  if (!(dflt_key_cache= get_or_create_key_cache(default_key_cache_base.str,
6725
                                                default_key_cache_base.length)))
6726 6727 6728 6729
  {
    sql_print_error("Cannot allocate the keycache");
    return 1;
  }
6730 6731
  /* set key_cache_hash.default_value = dflt_key_cache */
  multi_keycache_init();
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6732 6733

  /* Set directory paths */
6734 6735 6736
  mysql_real_data_home_len=
    strmake(mysql_real_data_home, get_relative_path(MYSQL_DATADIR),
            sizeof(mysql_real_data_home)-1) - mysql_real_data_home;
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6737 6738
  /* Replication parameters */
  master_info_file= (char*) "master.info",
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6739
    relay_log_info_file= (char*) "relay-log.info";
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6740 6741 6742 6743 6744
  report_user= report_password = report_host= 0;	/* TO BE DELETED */
  opt_relay_logname= opt_relaylog_index_name= 0;

  /* Variables in libraries */
  charsets_dir= 0;
6745
  default_character_set_name= (char*) MYSQL_DEFAULT_CHARSET_NAME;
6746
  default_collation_name= compiled_default_collation_name;
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6747
  character_set_filesystem_name= (char*) "binary";
6748
  lc_messages= (char*) "en_US";
6749
  lc_time_names_name= (char*) "en_US";
6750
  
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6751 6752 6753 6754 6755 6756
  /* Variables that depends on compile options */
#ifndef DBUG_OFF
  default_dbug_option=IF_WIN("d:t:i:O,\\mysqld.trace",
			     "d:t:i:o,/tmp/mysqld.trace");
#endif
  opt_error_log= IF_WIN(1,0);
6757 6758
#ifdef ENABLED_PROFILING
    have_profiling = SHOW_OPTION_YES;
6759
#else
6760
    have_profiling = SHOW_OPTION_NO;
6761
#endif
6762

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6763
#ifdef HAVE_OPENSSL
6764
  have_ssl=SHOW_OPTION_YES;
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6765
#else
6766
  have_ssl=SHOW_OPTION_NO;
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6767
#endif
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6768
#ifdef HAVE_BROKEN_REALPATH
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6769 6770 6771 6772
  have_symlink=SHOW_OPTION_NO;
#else
  have_symlink=SHOW_OPTION_YES;
#endif
6773 6774 6775 6776 6777
#ifdef HAVE_DLOPEN
  have_dlopen=SHOW_OPTION_YES;
#else
  have_dlopen=SHOW_OPTION_NO;
#endif
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6778 6779 6780 6781 6782
#ifdef HAVE_QUERY_CACHE
  have_query_cache=SHOW_OPTION_YES;
#else
  have_query_cache=SHOW_OPTION_NO;
#endif
6783 6784 6785 6786 6787 6788 6789 6790 6791 6792
#ifdef HAVE_SPATIAL
  have_geometry=SHOW_OPTION_YES;
#else
  have_geometry=SHOW_OPTION_NO;
#endif
#ifdef HAVE_RTREE_KEYS
  have_rtree_keys=SHOW_OPTION_YES;
#else
  have_rtree_keys=SHOW_OPTION_NO;
#endif
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6793 6794 6795 6796 6797 6798
#ifdef HAVE_CRYPT
  have_crypt=SHOW_OPTION_YES;
#else
  have_crypt=SHOW_OPTION_NO;
#endif
#ifdef HAVE_COMPRESS
6799
  have_compress= SHOW_OPTION_YES;
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6800
#else
6801
  have_compress= SHOW_OPTION_NO;
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6802 6803 6804 6805 6806 6807
#endif
#ifdef HAVE_LIBWRAP
  libwrapName= NullS;
#endif
#ifdef HAVE_OPENSSL
  des_key_file = 0;
Konstantin Osipov's avatar
Konstantin Osipov committed
6808
#ifndef EMBEDDED_LIBRARY
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6809
  ssl_acceptor_fd= 0;
Konstantin Osipov's avatar
Konstantin Osipov committed
6810 6811
#endif /* ! EMBEDDED_LIBRARY */
#endif /* HAVE_OPENSSL */
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6812 6813 6814 6815
#ifdef HAVE_SMEM
  shared_memory_base_name= default_shared_memory_base_name;
#endif

6816 6817
#if defined(__WIN__)
  /* Allow Win32 users to move MySQL anywhere */
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6818 6819
  {
    char prg_dev[LIBLEN];
6820 6821 6822 6823 6824 6825 6826 6827 6828 6829 6830
    char executing_path_name[LIBLEN];
    if (!test_if_hard_path(my_progname))
    {
      // we don't want to use GetModuleFileName inside of my_path since
      // my_path is a generic path dereferencing function and here we care
      // only about the executing binary.
      GetModuleFileName(NULL, executing_path_name, sizeof(executing_path_name));
      my_path(prg_dev, executing_path_name, NULL);
    }
    else
      my_path(prg_dev, my_progname, "mysql/bin");
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6831 6832 6833 6834 6835
    strcat(prg_dev,"/../");			// Remove 'bin' to get base dir
    cleanup_dirname(mysql_home,prg_dev);
  }
#else
  const char *tmpenv;
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6836
  if (!(tmpenv = getenv("MY_BASEDIR_VERSION")))
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6837
    tmpenv = DEFAULT_MYSQL_HOME;
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6838
  (void) strmake(mysql_home, tmpenv, sizeof(mysql_home)-1);
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6839
#endif
6840
  return 0;
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6841 6842
}

6843 6844 6845 6846
my_bool
mysqld_get_one_option(int optid,
                      const struct my_option *opt __attribute__((unused)),
                      char *argument)
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6847
{
6848 6849
  switch(optid) {
  case '#':
6850
#ifndef DBUG_OFF
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6851
    DBUG_SET_INITIAL(argument ? argument : default_dbug_option);
6852 6853 6854 6855
#endif
    opt_endinfo=1;				/* unireg: memory allocation */
    break;
  case 'a':
6856
    global_system_variables.sql_mode= MODE_ANSI;
unknown's avatar
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6857
    global_system_variables.tx_isolation= ISO_SERIALIZABLE;
6858 6859 6860 6861
    break;
  case 'b':
    strmake(mysql_home,argument,sizeof(mysql_home)-1);
    break;
6862
  case 'C':
6863 6864
    if (default_collation_name == compiled_default_collation_name)
      default_collation_name= 0;
6865
    break;
6866
  case 'l':
6867
    WARN_DEPRECATED(NULL, 7, 0, "--log", "'--general-log'/'--general-log-file'");
6868 6869 6870 6871
    opt_log=1;
    break;
  case 'h':
    strmake(mysql_real_data_home,argument, sizeof(mysql_real_data_home)-1);
6872
    /* Correct pointer set by my_getopt (for embedded library) */
6873
    mysql_real_data_home_ptr= mysql_real_data_home;
6874
    break;
6875
  case 'u':
6876
    if (!mysqld_user || !strcmp(mysqld_user, argument))
unknown's avatar
unknown committed
6877
      mysqld_user= argument;
6878
    else
6879
      sql_print_warning("Ignoring user change to '%s' because the user was set to '%s' earlier on the command line\n", argument, mysqld_user);
6880
    break;
6881
  case 'L':
6882
    strmake(lc_messages_dir, argument, sizeof(lc_messages_dir)-1);
6883
    lc_messages_dir_ptr= lc_messages_dir;
6884
    break;
6885 6886
  case OPT_BINLOG_FORMAT:
    binlog_format_used= true;
6887
    break;
6888
#include <sslopt-case.h>
6889
#ifndef EMBEDDED_LIBRARY
6890 6891 6892
  case 'V':
    print_version();
    exit(0);
6893
#endif /*EMBEDDED_LIBRARY*/
6894 6895 6896 6897 6898 6899 6900 6901
  case 'W':
    if (!argument)
      global_system_variables.log_warnings++;
    else if (argument == disabled_my_option)
      global_system_variables.log_warnings= 0L;
    else
      global_system_variables.log_warnings= atoi(argument);
    break;
6902 6903 6904 6905 6906 6907 6908 6909
  case 'T':
    test_flags= argument ? (uint) atoi(argument) : 0;
    opt_endinfo=1;
    break;
  case (int) OPT_ISAM_LOG:
    opt_myisam_log=1;
    break;
  case (int) OPT_BIN_LOG:
6910
    opt_bin_log= test(argument != disabled_my_option);
6911
    break;
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SCRUM  
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6912
#ifdef HAVE_REPLICATION
6913
  case (int)OPT_REPLICATE_IGNORE_DB:
6914
  {
6915
    rpl_filter->add_ignore_db(argument);
6916 6917 6918 6919
    break;
  }
  case (int)OPT_REPLICATE_DO_DB:
  {
6920
    rpl_filter->add_do_db(argument);
6921 6922 6923 6924 6925
    break;
  }
  case (int)OPT_REPLICATE_REWRITE_DB:
  {
    char* key = argument,*p, *val;
6926

6927
    if (!(p= strstr(argument, "->")))
6928
    {
6929 6930
      sql_print_error("Bad syntax in replicate-rewrite-db - missing '->'!\n");
      return 1;
6931
    }
6932
    val= p--;
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6933
    while (my_isspace(mysqld_charset, *p) && p > argument)
6934 6935
      *p-- = 0;
    if (p == argument)
6936
    {
6937 6938
      sql_print_error("Bad syntax in replicate-rewrite-db - empty FROM db!\n");
      return 1;
6939
    }
6940 6941
    *val= 0;
    val+= 2;
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6942
    while (*val && my_isspace(mysqld_charset, *val))
6943
      val++;
6944
    if (!*val)
6945
    {
6946 6947
      sql_print_error("Bad syntax in replicate-rewrite-db - empty TO db!\n");
      return 1;
6948 6949
    }

6950
    rpl_filter->add_db_rewrite(key, val);
6951 6952 6953
    break;
  }

6954
  case (int)OPT_BINLOG_IGNORE_DB:
6955
  {
6956
    binlog_filter->add_ignore_db(argument);
6957 6958
    break;
  }
6959
  case (int)OPT_BINLOG_DO_DB:
6960
  {
6961
    binlog_filter->add_do_db(argument);
6962 6963
    break;
  }
6964
  case (int)OPT_REPLICATE_DO_TABLE:
6965
  {
6966
    if (rpl_filter->add_do_table(argument))
6967
    {
6968 6969
      sql_print_error("Could not add do table rule '%s'!\n", argument);
      return 1;
6970
    }
6971 6972
    break;
  }
6973
  case (int)OPT_REPLICATE_WILD_DO_TABLE:
6974
  {
6975
    if (rpl_filter->add_wild_do_table(argument))
6976
    {
6977 6978
      sql_print_error("Could not add do table rule '%s'!\n", argument);
      return 1;
6979
    }
6980 6981
    break;
  }
6982
  case (int)OPT_REPLICATE_WILD_IGNORE_TABLE:
6983
  {
6984
    if (rpl_filter->add_wild_ignore_table(argument))
6985
    {
6986 6987
      sql_print_error("Could not add ignore table rule '%s'!\n", argument);
      return 1;
6988
    }
6989 6990
    break;
  }
6991
  case (int)OPT_REPLICATE_IGNORE_TABLE:
6992
  {
6993
    if (rpl_filter->add_ignore_table(argument))
6994
    {
6995 6996
      sql_print_error("Could not add ignore table rule '%s'!\n", argument);
      return 1;
6997
    }
6998 6999
    break;
  }
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7000
#endif /* HAVE_REPLICATION */
7001
  case (int) OPT_SLOW_QUERY_LOG:
7002
    WARN_DEPRECATED(NULL, 7, 0, "--log-slow-queries", "'--slow-query-log'/'--slow-query-log-file'");
7003
    opt_slow_log= 1;
7004
    break;
7005 7006
  case (int) OPT_SKIP_NEW:
    opt_specialflag|= SPECIAL_NO_NEW_FUNC;
7007
    delay_key_write_options= DELAY_KEY_WRITE_NONE;
7008
    myisam_concurrent_insert=0;
7009
    myisam_recover_options= HA_RECOVER_OFF;
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7010
    sp_automatic_privileges=0;
7011
    my_use_symdir=0;
7012
    ha_open_options&= ~(HA_OPEN_ABORT_IF_CRASHED | HA_OPEN_DELAY_KEY_WRITE);
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7013
#ifdef HAVE_QUERY_CACHE
7014 7015 7016 7017 7018
    query_cache_size=0;
#endif
    break;
  case (int) OPT_SAFE:
    opt_specialflag|= SPECIAL_SAFE_MODE;
7019
    delay_key_write_options= DELAY_KEY_WRITE_NONE;
7020 7021
    myisam_recover_options= HA_RECOVER_DEFAULT;
    ha_open_options&= ~(HA_OPEN_DELAY_KEY_WRITE);
7022 7023 7024
    break;
  case (int) OPT_SKIP_PRIOR:
    opt_specialflag|= SPECIAL_NO_PRIOR;
7025
    sql_print_warning("The --skip-thread-priority startup option is deprecated "
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Konstantin Osipov committed
7026 7027
                      "and will be removed in MySQL 7.0. This option has no effect "
                      "as the implied behavior is already the default.");
7028
    break;
7029 7030 7031 7032
  case (int) OPT_SKIP_HOST_CACHE:
    opt_specialflag|= SPECIAL_NO_HOST_CACHE;
    break;
  case (int) OPT_SKIP_RESOLVE:
7033
    opt_skip_name_resolve= 1;
7034 7035 7036 7037 7038 7039 7040 7041 7042 7043
    opt_specialflag|=SPECIAL_NO_RESOLVE;
    break;
  case (int) OPT_WANT_CORE:
    test_flags |= TEST_CORE_ON_SIGNAL;
    break;
  case (int) OPT_SKIP_STACK_TRACE:
    test_flags|=TEST_NO_STACKTRACE;
    break;
  case (int) OPT_BIND_ADDRESS:
    {
7044 7045 7046 7047 7048 7049 7050
      struct addrinfo *res_lst, hints;    

      bzero(&hints, sizeof(struct addrinfo));
      hints.ai_socktype= SOCK_STREAM;
      hints.ai_protocol= IPPROTO_TCP;

      if (getaddrinfo(argument, NULL, &hints, &res_lst) != 0) 
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7051
      {
7052 7053
        sql_print_error("Can't start server: cannot resolve hostname!");
        return 1;
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7054
      }
7055 7056

      if (res_lst->ai_next)
7057
      {
7058
        sql_print_error("Can't start server: bind-address refers to multiple interfaces!");
7059
        return 1;
7060
      }
7061
      freeaddrinfo(res_lst);
7062 7063
    }
    break;
7064 7065 7066 7067
  case OPT_CONSOLE:
    if (opt_console)
      opt_error_log= 0;			// Force logs to stdout
    break;
7068 7069 7070 7071 7072 7073
  case OPT_BOOTSTRAP:
    opt_noacl=opt_bootstrap=1;
    break;
  case OPT_SERVER_ID:
    server_id_supplied = 1;
    break;
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7074
  case OPT_ONE_THREAD:
7075
    thread_handling= SCHEDULER_ONE_THREAD_PER_CONNECTION;
7076
    break;
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  case OPT_LOWER_CASE_TABLE_NAMES:
7078
    lower_case_table_names_used= 1;
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    break;
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#if defined(ENABLED_DEBUG_SYNC)
  case OPT_DEBUG_SYNC_TIMEOUT:
    /*
      Debug Sync Facility. See debug_sync.cc.
      Default timeout for WAIT_FOR action.
      Default value is zero (facility disabled).
      If option is given without an argument, supply a non-zero value.
    */
    if (!argument)
    {
      /* purecov: begin tested */
      opt_debug_sync_timeout= DEBUG_SYNC_DEFAULT_WAIT_TIMEOUT;
      /* purecov: end */
    }
    break;
#endif /* defined(ENABLED_DEBUG_SYNC) */
7096 7097 7098 7099 7100 7101 7102 7103 7104 7105 7106 7107
  case OPT_ENGINE_CONDITION_PUSHDOWN:
    /*
      The last of --engine-condition-pushdown and --optimizer_switch on
      command line wins (see get_options().
    */
    if (global_system_variables.engine_condition_pushdown)
      global_system_variables.optimizer_switch|=
        OPTIMIZER_SWITCH_ENGINE_CONDITION_PUSHDOWN;
    else
      global_system_variables.optimizer_switch&=
        ~OPTIMIZER_SWITCH_ENGINE_CONDITION_PUSHDOWN;
    break;
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  case OPT_LOG_ERROR:
    /*
      "No --log-error" == "write errors to stderr",
      "--log-error without argument" == "write errors to a file".
    */
    if (argument == NULL) /* no argument */
      log_error_file_ptr= const_cast<char*>("");
    break;
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  case OPT_AUTOCOMMIT:
    const ulonglong turn_bit_on= (argument && (atoi(argument) == 0)) ?
      OPTION_NOT_AUTOCOMMIT : OPTION_AUTOCOMMIT;
    global_system_variables.option_bits=
      (global_system_variables.option_bits &
       ~(OPTION_NOT_AUTOCOMMIT | OPTION_AUTOCOMMIT)) | turn_bit_on;
    break;
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7123
  }
7124 7125
  return 0;
}
7126

7127

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7128
/** Handle arguments for multiple key caches. */
7129

7130
C_MODE_START
7131

7132
static void*
7133
mysql_getopt_value(const char *keyname, uint key_length,
7134
		   const struct my_option *option, int *error)
7135
{
7136 7137
  if (error)
    *error= 0;
7138 7139
  switch (option->id) {
  case OPT_KEY_BUFFER_SIZE:
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7140
  case OPT_KEY_CACHE_BLOCK_SIZE:
7141 7142
  case OPT_KEY_CACHE_DIVISION_LIMIT:
  case OPT_KEY_CACHE_AGE_THRESHOLD:
7143
  {
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7144
    KEY_CACHE *key_cache;
7145
    if (!(key_cache= get_or_create_key_cache(keyname, key_length)))
7146 7147 7148 7149 7150
    {
      if (error)
        *error= EXIT_OUT_OF_MEMORY;
      return 0;
    }
7151 7152
    switch (option->id) {
    case OPT_KEY_BUFFER_SIZE:
7153
      return &key_cache->param_buff_size;
7154
    case OPT_KEY_CACHE_BLOCK_SIZE:
7155
      return &key_cache->param_block_size;
7156
    case OPT_KEY_CACHE_DIVISION_LIMIT:
7157
      return &key_cache->param_division_limit;
7158
    case OPT_KEY_CACHE_AGE_THRESHOLD:
7159
      return &key_cache->param_age_threshold;
7160
    }
7161 7162
  }
  }
7163
  return option->value;
7164 7165
}

7166
static void option_error_reporter(enum loglevel level, const char *format, ...)
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7167
{
7168
  va_list args;
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7169
  va_start(args, format);
7170 7171 7172 7173 7174 7175 7176

  /* Don't print warnings for --loose options during bootstrap */
  if (level == ERROR_LEVEL || !opt_bootstrap ||
      global_system_variables.log_warnings)
  {
    vprint_msg_to_log(level, format, args);
  }
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  va_end(args);
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7178
}
7179

7180
C_MODE_END
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7181

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7182
/**
Marc Alff's avatar
Marc Alff committed
7183 7184 7185 7186 7187 7188
  Get server options from the command line,
  and perform related server initializations.
  @param [in, out] argc_ptr       command line options (count)
  @param [in, out] argv_ptr       command line options (values)
  @return 0 on success

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7189 7190 7191
  @todo
  - FIXME add EXIT_TOO_MANY_ARGUMENTS to "mysys_err.h" and return that code?
*/
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7192
static int get_options(int *argc_ptr, char ***argv_ptr)
7193 7194 7195
{
  int ho_error;

7196
  my_getopt_register_get_addr(mysql_getopt_value);
7197
  my_getopt_error_reporter= option_error_reporter;
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7198

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7199 7200 7201 7202
  /* prepare all_options array */
  my_init_dynamic_array(&all_options, sizeof(my_option),
                        array_elements(my_long_options),
                        array_elements(my_long_options)/4);
7203 7204 7205
  for (my_option *opt= my_long_options;
       opt < my_long_options + array_elements(my_long_options) - 1;
       opt++)
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7206 7207 7208
    insert_dynamic(&all_options, (uchar*) opt);
  sys_var_add_options(&all_options, sys_var::PARSE_NORMAL);
  add_terminator(&all_options);
7209

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  /* Skip unknown options so that they may be processed later by plugins */
  my_getopt_skip_unknown= TRUE;

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7213
  if ((ho_error= handle_options(argc_ptr, argv_ptr, (my_option*)(all_options.buffer),
7214
                                mysqld_get_one_option)))
7215
    return ho_error;
7216 7217 7218 7219

  if (!opt_help)
    delete_dynamic(&all_options);

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  /* Add back the program name handle_options removes */
  (*argc_ptr)++;
  (*argv_ptr)--;
7223

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  /*
    Options have been parsed. Now some of them need additional special
    handling, like custom value checking, checking of incompatibilites
    between options, setting of multiple variables, etc.
    Do them here.
  */
7230

7231 7232
  if ((opt_log_slow_admin_statements || opt_log_queries_not_using_indexes ||
       opt_log_slow_slave_statements) &&
7233
      !opt_slow_log)
7234
    sql_print_warning("options --log-slow-admin-statements, --log-queries-not-using-indexes and --log-slow-slave-statements have no effect if --log_slow_queries is not set");
7235

7236 7237 7238 7239 7240 7241 7242 7243 7244 7245 7246 7247 7248 7249 7250 7251 7252 7253 7254 7255
  if (log_error_file_ptr != disabled_my_option)
    opt_error_log= 1;
  else
    log_error_file_ptr= const_cast<char*>("");

  opt_init_connect.length=strlen(opt_init_connect.str);
  opt_init_slave.length=strlen(opt_init_slave.str);

  if (global_system_variables.low_priority_updates)
    thr_upgraded_concurrent_insert_lock= TL_WRITE_LOW_PRIORITY;

  if (ft_boolean_check_syntax_string((uchar*) ft_boolean_syntax))
  {
    sql_print_error("Invalid ft-boolean-syntax string: %s\n",
                    ft_boolean_syntax);
    return 1;
  }

  if (opt_disable_networking)
    mysqld_port= 0;
7256

7257 7258 7259 7260 7261 7262 7263 7264 7265 7266 7267 7268 7269 7270 7271 7272 7273 7274 7275 7276 7277 7278 7279
  if (opt_skip_show_db)
    opt_specialflag|= SPECIAL_SKIP_SHOW_DB;

  if (myisam_flush)
    flush_time= 0;

#ifdef HAVE_REPLICATION
  if (opt_slave_skip_errors)
    init_slave_skip_errors(opt_slave_skip_errors);
#endif

  if (global_system_variables.max_join_size == HA_POS_ERROR)
    global_system_variables.option_bits|= OPTION_BIG_SELECTS;
  else
    global_system_variables.option_bits&= ~OPTION_BIG_SELECTS;

  if (global_system_variables.option_bits & OPTION_AUTOCOMMIT)
    global_system_variables.option_bits&= ~OPTION_NOT_AUTOCOMMIT;
  else
    global_system_variables.option_bits|= OPTION_NOT_AUTOCOMMIT;

  global_system_variables.sql_mode=
    expand_sql_mode(global_system_variables.sql_mode);
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7280
#if defined(HAVE_BROKEN_REALPATH)
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  my_use_symdir=0;
  my_disable_symlinks=1;
  have_symlink=SHOW_OPTION_NO;
#else
  if (!my_use_symdir)
  {
    my_disable_symlinks=1;
    have_symlink=SHOW_OPTION_DISABLED;
  }
#endif
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  if (opt_debugging)
  {
    /* Allow break with SIGINT, no core or stack trace */
    test_flags|= TEST_SIGINT | TEST_NO_STACKTRACE;
    test_flags&= ~TEST_CORE_ON_SIGNAL;
  }
7297
  /* Set global MyISAM variables from delay_key_write_options */
7298
  fix_delay_key_write(0, 0, OPT_GLOBAL);
7299

7300
#ifndef EMBEDDED_LIBRARY
7301 7302
  if (mysqld_chroot)
    set_root(mysqld_chroot);
7303
#else
7304
  thread_handling = SCHEDULER_NO_THREADS;
7305 7306
  max_allowed_packet= global_system_variables.max_allowed_packet;
  net_buffer_length= global_system_variables.net_buffer_length;
7307
#endif
7308 7309
  if (fix_paths())
    return 1;
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7310

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7311 7312 7313 7314
  /*
    Set some global variables from the global_system_variables
    In most cases the global variables will not be used
  */
7315
  my_disable_locking= myisam_single_user= test(opt_external_locking == 0);
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7316
  my_default_record_cache_size=global_system_variables.read_buff_size;
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7317

7318 7319
  global_system_variables.long_query_time= (ulonglong)
    (global_system_variables.long_query_time_double * 1e6);
7320

7321 7322
  if (opt_short_log_format)
    opt_specialflag|= SPECIAL_SHORT_LOG_FORMAT;
7323

7324
  if (init_global_datetime_format(MYSQL_TIMESTAMP_DATE,
7325
                                  &global_date_format) ||
7326
      init_global_datetime_format(MYSQL_TIMESTAMP_TIME,
7327
                                  &global_time_format) ||
7328
      init_global_datetime_format(MYSQL_TIMESTAMP_DATETIME,
7329
                                  &global_datetime_format))
7330
    return 1;
7331

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7332
#ifdef EMBEDDED_LIBRARY
7333
  one_thread_scheduler();
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7334
#else
7335
  if (thread_handling <= SCHEDULER_ONE_THREAD_PER_CONNECTION)
7336 7337 7338
    one_thread_per_connection_scheduler();
  else                  /* thread_handling == SCHEDULER_NO_THREADS) */
    one_thread_scheduler();
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7339
#endif
7340 7341 7342 7343 7344

  global_system_variables.engine_condition_pushdown=
    test(global_system_variables.optimizer_switch &
         OPTIMIZER_SWITCH_ENGINE_CONDITION_PUSHDOWN);

7345
  return 0;
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7346 7347 7348
}


7349 7350 7351 7352 7353 7354 7355 7356 7357 7358
/*
  Create version name for running mysqld version
  We automaticly add suffixes -debug, -embedded and -log to the version
  name to make the version more descriptive.
  (MYSQL_SERVER_SUFFIX is set by the compilation environment)
*/

static void set_server_version(void)
{
  char *end= strxmov(server_version, MYSQL_SERVER_VERSION,
7359
                     MYSQL_SERVER_SUFFIX_STR, NullS);
7360 7361 7362 7363
#ifdef EMBEDDED_LIBRARY
  end= strmov(end, "-embedded");
#endif
#ifndef DBUG_OFF
7364
  if (!strstr(MYSQL_SERVER_SUFFIX_STR, "-debug"))
7365 7366
    end= strmov(end, "-debug");
#endif
7367
  if (opt_log || opt_slow_log || opt_bin_log)
7368 7369 7370 7371
    strmov(end, "-log");                        // This may slow down system
}


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7372 7373 7374
static char *get_relative_path(const char *path)
{
  if (test_if_hard_path(path) &&
7375
      is_prefix(path,DEFAULT_MYSQL_HOME) &&
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7376 7377
      strcmp(DEFAULT_MYSQL_HOME,FN_ROOTDIR))
  {
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7378
    path+=(uint) strlen(DEFAULT_MYSQL_HOME);
7379
    while (*path == FN_LIBCHAR || *path == FN_LIBCHAR2)
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7380 7381 7382 7383 7384 7385
      path++;
  }
  return (char*) path;
}


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7386
/**
7387 7388
  Fix filename and replace extension where 'dir' is relative to
  mysql_real_data_home.
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7389 7390
  @return
    1 if len(path) > FN_REFLEN
7391 7392 7393
*/

bool
7394
fn_format_relative_to_data_home(char * to, const char *name,
7395 7396 7397 7398 7399 7400 7401 7402 7403 7404
				const char *dir, const char *extension)
{
  char tmp_path[FN_REFLEN];
  if (!test_if_hard_path(dir))
  {
    strxnmov(tmp_path,sizeof(tmp_path)-1, mysql_real_data_home,
	     dir, NullS);
    dir=tmp_path;
  }
  return !fn_format(to, name, dir, extension,
7405
		    MY_APPEND_EXT | MY_UNPACK_FILENAME | MY_SAFE_PATH);
7406 7407 7408
}


7409 7410 7411 7412 7413 7414 7415 7416 7417 7418 7419 7420 7421 7422 7423 7424 7425 7426 7427 7428
/**
  Test a file path to determine if the path is compatible with the secure file
  path restriction.
 
  @param path null terminated character string

  @return
    @retval TRUE The path is secure
    @retval FALSE The path isn't secure
*/

bool is_secure_file_path(char *path)
{
  char buff1[FN_REFLEN], buff2[FN_REFLEN];
  /*
    All paths are secure if opt_secure_file_path is 0
  */
  if (!opt_secure_file_priv)
    return TRUE;

Georgi Kodinov's avatar
Georgi Kodinov committed
7429 7430 7431
  if (strlen(path) >= FN_REFLEN)
    return FALSE;

7432 7433 7434 7435 7436 7437 7438 7439 7440 7441 7442 7443 7444 7445 7446 7447 7448 7449 7450
  if (my_realpath(buff1, path, 0))
  {
    /*
      The supplied file path might have been a file and not a directory.
    */
    int length= (int)dirname_length(path);
    if (length >= FN_REFLEN)
      return FALSE;
    memcpy(buff2, path, length);
    buff2[length]= '\0';
    if (length == 0 || my_realpath(buff1, buff2, 0))
      return FALSE;
  }
  convert_dirname(buff2, buff1, NullS);
  if (strncmp(opt_secure_file_priv, buff2, strlen(opt_secure_file_priv)))
    return FALSE;
  return TRUE;
}

7451
static int fix_paths(void)
unknown's avatar
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7452
{
7453
  char buff[FN_REFLEN],*pos;
7454
  convert_dirname(mysql_home,mysql_home,NullS);
7455
  /* Resolve symlinks to allow 'mysql_home' to be a relative symlink */
7456
  my_realpath(mysql_home,mysql_home,MYF(0));
7457 7458 7459 7460 7461 7462 7463
  /* Ensure that mysql_home ends in FN_LIBCHAR */
  pos=strend(mysql_home);
  if (pos[-1] != FN_LIBCHAR)
  {
    pos[0]= FN_LIBCHAR;
    pos[1]= 0;
  }
7464
  convert_dirname(lc_messages_dir, lc_messages_dir, NullS);
7465
  convert_dirname(mysql_real_data_home,mysql_real_data_home,NullS);
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7466 7467
  (void) my_load_path(mysql_home,mysql_home,""); // Resolve current dir
  (void) my_load_path(mysql_real_data_home,mysql_real_data_home,mysql_home);
7468
  (void) my_load_path(pidfile_name, pidfile_name_ptr, mysql_real_data_home);
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7469
  (void) my_load_path(opt_plugin_dir, opt_plugin_dir_ptr ? opt_plugin_dir_ptr :
7470
                                      get_relative_path(PLUGINDIR), mysql_home);
7471
  opt_plugin_dir_ptr= opt_plugin_dir;
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7472

7473 7474 7475 7476 7477 7478
  my_realpath(mysql_unpacked_real_data_home, mysql_real_data_home, MYF(0));
  mysql_unpacked_real_data_home_len= 
    (int) strlen(mysql_unpacked_real_data_home);
  if (mysql_unpacked_real_data_home[mysql_unpacked_real_data_home_len-1] == FN_LIBCHAR)
    --mysql_unpacked_real_data_home_len;

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7479
  char *sharedir=get_relative_path(SHAREDIR);
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7480
  if (test_if_hard_path(sharedir))
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7481
    strmake(buff,sharedir,sizeof(buff)-1);		/* purecov: tested */
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7482
  else
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7483
    strxnmov(buff,sizeof(buff)-1,mysql_home,sharedir,NullS);
7484
  convert_dirname(buff,buff,NullS);
7485
  (void) my_load_path(lc_messages_dir, lc_messages_dir, buff);
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7486 7487

  /* If --character-sets-dir isn't given, use shared library dir */
7488 7489 7490
  if (charsets_dir)
    strmake(mysql_charsets_dir, charsets_dir, sizeof(mysql_charsets_dir)-1);
  else
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7491 7492
    strxnmov(mysql_charsets_dir, sizeof(mysql_charsets_dir)-1, buff,
	     CHARSET_DIR, NullS);
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7493
  (void) my_load_path(mysql_charsets_dir, mysql_charsets_dir, buff);
7494
  convert_dirname(mysql_charsets_dir, mysql_charsets_dir, NullS);
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7495
  charsets_dir=mysql_charsets_dir;
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7496

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7497
  if (init_tmpdir(&mysql_tmpdir_list, opt_mysql_tmpdir))
7498
    return 1;
7499 7500
  if (!opt_mysql_tmpdir)
    opt_mysql_tmpdir= mysql_tmpdir;
unknown's avatar
SCRUM  
unknown committed
7501
#ifdef HAVE_REPLICATION
7502
  if (!slave_load_tmpdir)
7503
    slave_load_tmpdir= mysql_tmpdir;
7504
#endif /* HAVE_REPLICATION */
7505 7506 7507 7508 7509 7510
  /*
    Convert the secure-file-priv option to system format, allowing
    a quick strcmp to check if read or write is in an allowed dir
   */
  if (opt_secure_file_priv)
  {
7511 7512 7513 7514 7515 7516
    if (*opt_secure_file_priv == 0)
    {
      opt_secure_file_priv= 0;
    }
    else
    {
Georgi Kodinov's avatar
Georgi Kodinov committed
7517 7518
      if (strlen(opt_secure_file_priv) >= FN_REFLEN)
        opt_secure_file_priv[FN_REFLEN-1]= '\0';
7519
      if (my_realpath(buff, opt_secure_file_priv, 0))
7520 7521 7522 7523
      {
        sql_print_warning("Failed to normalize the argument for --secure-file-priv.");
        return 1;
      }
7524 7525
      char *secure_file_real_path= (char *)my_malloc(FN_REFLEN, MYF(MY_FAE));
      convert_dirname(secure_file_real_path, buff, NullS);
7526
      my_free(opt_secure_file_priv);
7527 7528
      opt_secure_file_priv= secure_file_real_path;
    }
7529
  }
7530
  
7531
  return 0;
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7532 7533
}

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7534 7535
/**
  Check if file system used for databases is case insensitive.
7536

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7537
  @param dir_name			Directory to test
7538

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7539
  @retval
7540
    -1  Don't know (Test failed)
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7541
  @retval
7542
    0   File system is case sensitive
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7543
  @retval
7544 7545 7546 7547 7548 7549 7550 7551 7552
    1   File system is case insensitive
*/

static int test_if_case_insensitive(const char *dir_name)
{
  int result= 0;
  File file;
  char buff[FN_REFLEN], buff2[FN_REFLEN];
  MY_STAT stat_info;
7553
  DBUG_ENTER("test_if_case_insensitive");
7554 7555 7556 7557 7558

  fn_format(buff, glob_hostname, dir_name, ".lower-test",
	    MY_UNPACK_FILENAME | MY_REPLACE_EXT | MY_REPLACE_DIR);
  fn_format(buff2, glob_hostname, dir_name, ".LOWER-TEST",
	    MY_UNPACK_FILENAME | MY_REPLACE_EXT | MY_REPLACE_DIR);
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7559 7560 7561
  mysql_file_delete(key_file_casetest, buff2, MYF(0));
  if ((file= mysql_file_create(key_file_casetest,
                               buff, 0666, O_RDWR, MYF(0))) < 0)
7562
  {
7563
    sql_print_warning("Can't create test file %s", buff);
7564
    DBUG_RETURN(-1);
7565
  }
Marc Alff's avatar
Marc Alff committed
7566 7567
  mysql_file_close(file, MYF(0));
  if (mysql_file_stat(key_file_casetest, buff2, &stat_info, MYF(0)))
7568
    result= 1;					// Can access file
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Marc Alff committed
7569
  mysql_file_delete(key_file_casetest, buff, MYF(MY_WME));
7570 7571
  DBUG_PRINT("exit", ("result: %d", result));
  DBUG_RETURN(result);
7572 7573 7574
}


7575 7576
#ifndef EMBEDDED_LIBRARY

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7577 7578 7579
/**
  Create file to store pid number.
*/
7580 7581 7582
static void create_pid_file()
{
  File file;
Marc Alff's avatar
Marc Alff committed
7583 7584
  if ((file= mysql_file_create(key_file_pid, pidfile_name, 0664,
                               O_WRONLY | O_TRUNC, MYF(MY_WME))) >= 0)
7585
  {
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7586
    char buff[21], *end;
7587
    end= int10_to_str((long) getpid(), buff, 10);
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7588
    *end++= '\n';
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7589 7590
    if (!mysql_file_write(file, (uchar*) buff, (uint) (end-buff),
                          MYF(MY_WME | MY_NABP)))
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    {
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      mysql_file_close(file, MYF(0));
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      return;
    }
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    mysql_file_close(file, MYF(0));
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  }
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  sql_perror("Can't start server: can't create PID file");
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  exit(1);
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}
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#endif /* EMBEDDED_LIBRARY */
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/** Clear most status variables. */
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void refresh_status(THD *thd)
{
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  mysql_mutex_lock(&LOCK_status);
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  /* Add thread's status variabes to global status */
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  add_to_status(&global_status_var, &thd->status_var);
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  /* Reset thread's status variables */
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  bzero((uchar*) &thd->status_var, sizeof(thd->status_var));
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  /* Reset some global variables */
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  reset_status_vars();
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  /* Reset the counters of all key caches (default and named). */
  process_key_caches(reset_key_cache_counters);
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  flush_status_time= time((time_t*) 0);
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  mysql_mutex_unlock(&LOCK_status);
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  /*
    Set max_used_connections to the number of currently open
    connections.  Lock LOCK_thread_count out of LOCK_status to avoid
    deadlocks.  Status reset becomes not atomic, but status data is
    not exact anyway.
  */
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  mysql_mutex_lock(&LOCK_thread_count);
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  max_used_connections= thread_count-delayed_insert_threads;
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  mysql_mutex_unlock(&LOCK_thread_count);
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}


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/*****************************************************************************
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  Instantiate variables for missing storage engines
  This section should go away soon
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*****************************************************************************/

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/*****************************************************************************
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  Instantiate templates
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*****************************************************************************/

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#ifdef HAVE_EXPLICIT_TEMPLATE_INSTANTIATION
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/* Used templates */
template class I_List<THD>;
template class I_List_iterator<THD>;
template class I_List<i_string>;
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template class I_List<i_string_pair>;
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template class I_List<Statement>;
template class I_List_iterator<Statement>;
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#endif
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#ifdef HAVE_PSI_INTERFACE
#ifdef HAVE_MMAP
PSI_mutex_key key_PAGE_lock, key_LOCK_sync, key_LOCK_active, key_LOCK_pool;
#endif /* HAVE_MMAP */

#ifdef HAVE_OPENSSL
PSI_mutex_key key_LOCK_des_key_file;
#endif /* HAVE_OPENSSL */

PSI_mutex_key key_BINLOG_LOCK_index, key_BINLOG_LOCK_prep_xids,
  key_delayed_insert_mutex, key_hash_filo_lock, key_LOCK_active_mi,
  key_LOCK_connection_count, key_LOCK_crypt, key_LOCK_delayed_create,
  key_LOCK_delayed_insert, key_LOCK_delayed_status, key_LOCK_error_log,
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  key_LOCK_gdl, key_LOCK_global_system_variables,
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  key_LOCK_manager,
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  key_LOCK_prepared_stmt_count,
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  key_LOCK_rpl_status, key_LOCK_server_started, key_LOCK_status,
  key_LOCK_system_variables_hash, key_LOCK_table_share, key_LOCK_thd_data,
  key_LOCK_user_conn, key_LOCK_uuid_generator, key_LOG_LOCK_log,
  key_master_info_data_lock, key_master_info_run_lock,
  key_mutex_slave_reporting_capability_err_lock, key_relay_log_info_data_lock,
  key_relay_log_info_log_space_lock, key_relay_log_info_run_lock,
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  key_structure_guard_mutex, key_TABLE_SHARE_LOCK_ha_data,
  key_LOCK_error_messages, key_LOG_INFO_lock, key_LOCK_thread_count,
  key_PARTITION_LOCK_auto_inc;
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static PSI_mutex_info all_server_mutexes[]=
{
#ifdef HAVE_MMAP
  { &key_PAGE_lock, "PAGE::lock", 0},
  { &key_LOCK_sync, "TC_LOG_MMAP::LOCK_sync", 0},
  { &key_LOCK_active, "TC_LOG_MMAP::LOCK_active", 0},
  { &key_LOCK_pool, "TC_LOG_MMAP::LOCK_pool", 0},
#endif /* HAVE_MMAP */

#ifdef HAVE_OPENSSL
  { &key_LOCK_des_key_file, "LOCK_des_key_file", PSI_FLAG_GLOBAL},
#endif /* HAVE_OPENSSL */

  { &key_BINLOG_LOCK_index, "MYSQL_BIN_LOG::LOCK_index", 0},
  { &key_BINLOG_LOCK_prep_xids, "MYSQL_BIN_LOG::LOCK_prep_xids", 0},
  { &key_delayed_insert_mutex, "Delayed_insert::mutex", 0},
  { &key_hash_filo_lock, "hash_filo::lock", 0},
  { &key_LOCK_active_mi, "LOCK_active_mi", PSI_FLAG_GLOBAL},
  { &key_LOCK_connection_count, "LOCK_connection_count", PSI_FLAG_GLOBAL},
  { &key_LOCK_crypt, "LOCK_crypt", PSI_FLAG_GLOBAL},
  { &key_LOCK_delayed_create, "LOCK_delayed_create", PSI_FLAG_GLOBAL},
  { &key_LOCK_delayed_insert, "LOCK_delayed_insert", PSI_FLAG_GLOBAL},
  { &key_LOCK_delayed_status, "LOCK_delayed_status", PSI_FLAG_GLOBAL},
  { &key_LOCK_error_log, "LOCK_error_log", PSI_FLAG_GLOBAL},
  { &key_LOCK_gdl, "LOCK_gdl", PSI_FLAG_GLOBAL},
  { &key_LOCK_global_system_variables, "LOCK_global_system_variables", PSI_FLAG_GLOBAL},
  { &key_LOCK_manager, "LOCK_manager", PSI_FLAG_GLOBAL},
  { &key_LOCK_prepared_stmt_count, "LOCK_prepared_stmt_count", PSI_FLAG_GLOBAL},
  { &key_LOCK_rpl_status, "LOCK_rpl_status", PSI_FLAG_GLOBAL},
  { &key_LOCK_server_started, "LOCK_server_started", PSI_FLAG_GLOBAL},
  { &key_LOCK_status, "LOCK_status", PSI_FLAG_GLOBAL},
  { &key_LOCK_system_variables_hash, "LOCK_system_variables_hash", PSI_FLAG_GLOBAL},
  { &key_LOCK_table_share, "LOCK_table_share", PSI_FLAG_GLOBAL},
  { &key_LOCK_thd_data, "THD::LOCK_thd_data", 0},
  { &key_LOCK_user_conn, "LOCK_user_conn", PSI_FLAG_GLOBAL},
  { &key_LOCK_uuid_generator, "LOCK_uuid_generator", PSI_FLAG_GLOBAL},
  { &key_LOG_LOCK_log, "LOG::LOCK_log", 0},
  { &key_master_info_data_lock, "Master_info::data_lock", 0},
  { &key_master_info_run_lock, "Master_info::run_lock", 0},
  { &key_mutex_slave_reporting_capability_err_lock, "Slave_reporting_capability::err_lock", 0},
  { &key_relay_log_info_data_lock, "Relay_log_info::data_lock", 0},
  { &key_relay_log_info_log_space_lock, "Relay_log_info::log_space_lock", 0},
  { &key_relay_log_info_run_lock, "Relay_log_info::run_lock", 0},
  { &key_structure_guard_mutex, "Query_cache::structure_guard_mutex", 0},
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  { &key_TABLE_SHARE_LOCK_ha_data, "TABLE_SHARE::LOCK_ha_data", 0},
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  { &key_LOCK_error_messages, "LOCK_error_messages", PSI_FLAG_GLOBAL},
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  { &key_LOG_INFO_lock, "LOG_INFO::lock", 0},
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  { &key_LOCK_thread_count, "LOCK_thread_count", PSI_FLAG_GLOBAL},
  { &key_PARTITION_LOCK_auto_inc, "HA_DATA_PARTITION::LOCK_auto_inc", 0}
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};

PSI_rwlock_key key_rwlock_LOCK_grant, key_rwlock_LOCK_logger,
  key_rwlock_LOCK_sys_init_connect, key_rwlock_LOCK_sys_init_slave,
  key_rwlock_LOCK_system_variables_hash, key_rwlock_query_cache_query_lock;

static PSI_rwlock_info all_server_rwlocks[]=
{
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#if defined (HAVE_OPENSSL) && !defined(HAVE_YASSL)
  { &key_rwlock_openssl, "CRYPTO_dynlock_value::lock", 0},
#endif
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  { &key_rwlock_LOCK_grant, "LOCK_grant", PSI_FLAG_GLOBAL},
  { &key_rwlock_LOCK_logger, "LOGGER::LOCK_logger", 0},
  { &key_rwlock_LOCK_sys_init_connect, "LOCK_sys_init_connect", PSI_FLAG_GLOBAL},
  { &key_rwlock_LOCK_sys_init_slave, "LOCK_sys_init_slave", PSI_FLAG_GLOBAL},
  { &key_rwlock_LOCK_system_variables_hash, "LOCK_system_variables_hash", PSI_FLAG_GLOBAL},
  { &key_rwlock_query_cache_query_lock, "Query_cache_query::lock", 0}
};

#ifdef HAVE_MMAP
PSI_cond_key key_PAGE_cond, key_COND_active, key_COND_pool;
#endif /* HAVE_MMAP */

PSI_cond_key key_BINLOG_COND_prep_xids, key_BINLOG_update_cond,
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  key_COND_cache_status_changed, key_COND_manager,
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  key_COND_rpl_status, key_COND_server_started,
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  key_delayed_insert_cond, key_delayed_insert_cond_client,
  key_item_func_sleep_cond, key_master_info_data_cond,
  key_master_info_start_cond, key_master_info_stop_cond,
  key_relay_log_info_data_cond, key_relay_log_info_log_space_cond,
  key_relay_log_info_start_cond, key_relay_log_info_stop_cond,
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  key_TABLE_SHARE_cond, key_user_level_lock_cond,
  key_COND_thread_count, key_COND_thread_cache, key_COND_flush_thread_cache;
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static PSI_cond_info all_server_conds[]=
{
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#if (defined(_WIN32) || defined(HAVE_SMEM)) && !defined(EMBEDDED_LIBRARY)
  { &key_COND_handler_count, "COND_handler_count", PSI_FLAG_GLOBAL},
#endif /* _WIN32 || HAVE_SMEM && !EMBEDDED_LIBRARY */
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#ifdef HAVE_MMAP
  { &key_PAGE_cond, "PAGE::cond", 0},
  { &key_COND_active, "TC_LOG_MMAP::COND_active", 0},
  { &key_COND_pool, "TC_LOG_MMAP::COND_pool", 0},
#endif /* HAVE_MMAP */
  { &key_BINLOG_COND_prep_xids, "MYSQL_BIN_LOG::COND_prep_xids", 0},
  { &key_BINLOG_update_cond, "MYSQL_BIN_LOG::update_cond", 0},
  { &key_COND_cache_status_changed, "Query_cache::COND_cache_status_changed", 0},
  { &key_COND_manager, "COND_manager", PSI_FLAG_GLOBAL},
  { &key_COND_rpl_status, "COND_rpl_status", PSI_FLAG_GLOBAL},
  { &key_COND_server_started, "COND_server_started", PSI_FLAG_GLOBAL},
  { &key_delayed_insert_cond, "Delayed_insert::cond", 0},
  { &key_delayed_insert_cond_client, "Delayed_insert::cond_client", 0},
  { &key_item_func_sleep_cond, "Item_func_sleep::cond", 0},
  { &key_master_info_data_cond, "Master_info::data_cond", 0},
  { &key_master_info_start_cond, "Master_info::start_cond", 0},
  { &key_master_info_stop_cond, "Master_info::stop_cond", 0},
  { &key_relay_log_info_data_cond, "Relay_log_info::data_cond", 0},
  { &key_relay_log_info_log_space_cond, "Relay_log_info::log_space_cond", 0},
  { &key_relay_log_info_start_cond, "Relay_log_info::start_cond", 0},
  { &key_relay_log_info_stop_cond, "Relay_log_info::stop_cond", 0},
  { &key_TABLE_SHARE_cond, "TABLE_SHARE::cond", 0},
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  { &key_user_level_lock_cond, "User_level_lock::cond", 0},
  { &key_COND_thread_count, "COND_thread_count", PSI_FLAG_GLOBAL},
  { &key_COND_thread_cache, "COND_thread_cache", PSI_FLAG_GLOBAL},
  { &key_COND_flush_thread_cache, "COND_flush_thread_cache", PSI_FLAG_GLOBAL}
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};

PSI_thread_key key_thread_bootstrap, key_thread_delayed_insert,
  key_thread_handle_manager, key_thread_main,
  key_thread_one_connection, key_thread_signal_hand;

static PSI_thread_info all_server_threads[]=
{
#if (defined(_WIN32) || defined(HAVE_SMEM)) && !defined(EMBEDDED_LIBRARY)
  { &key_thread_handle_con_namedpipes, "con_named_pipes", PSI_FLAG_GLOBAL},
#endif /* _WIN32 || HAVE_SMEM && !EMBEDDED_LIBRARY */

#if defined(HAVE_SMEM) && !defined(EMBEDDED_LIBRARY)
  { &key_thread_handle_con_sharedmem, "con_shared_mem", PSI_FLAG_GLOBAL},
#endif /* HAVE_SMEM && !EMBEDDED_LIBRARY */

#if (defined(_WIN32) || defined(HAVE_SMEM)) && !defined(EMBEDDED_LIBRARY)
  { &key_thread_handle_con_sockets, "con_sockets", PSI_FLAG_GLOBAL},
#endif /* _WIN32 || HAVE_SMEM && !EMBEDDED_LIBRARY */

#ifdef __WIN__
  { &key_thread_handle_shutdown, "shutdown", PSI_FLAG_GLOBAL},
#endif /* __WIN__ */

  { &key_thread_bootstrap, "bootstrap", PSI_FLAG_GLOBAL},
  { &key_thread_delayed_insert, "delayed_insert", 0},
  { &key_thread_handle_manager, "manager", PSI_FLAG_GLOBAL},
  { &key_thread_main, "main", PSI_FLAG_GLOBAL},
  { &key_thread_one_connection, "one_connection", 0},
  { &key_thread_signal_hand, "signal_handler", PSI_FLAG_GLOBAL}
};

#ifdef HAVE_MMAP
PSI_file_key key_file_map;
#endif /* HAVE_MMAP */

PSI_file_key key_file_binlog, key_file_binlog_index, key_file_casetest,
  key_file_dbopt, key_file_des_key_file, key_file_ERRMSG, key_select_to_file,
  key_file_fileparser, key_file_frm, key_file_global_ddl_log, key_file_load,
  key_file_loadfile, key_file_log_event_data, key_file_log_event_info,
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  key_file_master_info, key_file_misc, key_file_partition,
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  key_file_pid, key_file_relay_log_info, key_file_send_file, key_file_tclog,
  key_file_trg, key_file_trn, key_file_init;
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PSI_file_key key_file_query_log, key_file_slow_log;
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static PSI_file_info all_server_files[]=
{
#ifdef HAVE_MMAP
  { &key_file_map, "map", 0},
#endif /* HAVE_MMAP */
  { &key_file_binlog, "binlog", 0},
  { &key_file_binlog_index, "binlog_index", 0},
  { &key_file_casetest, "casetest", 0},
  { &key_file_dbopt, "dbopt", 0},
  { &key_file_des_key_file, "des_key_file", 0},
  { &key_file_ERRMSG, "ERRMSG", 0},
  { &key_select_to_file, "select_to_file", 0},
  { &key_file_fileparser, "file_parser", 0},
  { &key_file_frm, "FRM", 0},
  { &key_file_global_ddl_log, "global_ddl_log", 0},
  { &key_file_load, "load", 0},
  { &key_file_loadfile, "LOAD_FILE", 0},
  { &key_file_log_event_data, "log_event_data", 0},
  { &key_file_log_event_info, "log_event_info", 0},
  { &key_file_master_info, "master_info", 0},
  { &key_file_misc, "misc", 0},
  { &key_file_partition, "partition", 0},
  { &key_file_pid, "pid", 0},
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  { &key_file_query_log, "query_log", 0},
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  { &key_file_relay_log_info, "relay_log_info", 0},
  { &key_file_send_file, "send_file", 0},
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  { &key_file_slow_log, "slow_log", 0},
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  { &key_file_tclog, "tclog", 0},
  { &key_file_trg, "trigger_name", 0},
  { &key_file_trn, "trigger", 0},
  { &key_file_init, "init", 0}
};

/**
  Initialise all the performance schema instrumentation points
  used by the server.
*/
void init_server_psi_keys(void)
{
  const char* category= "sql";
  int count;

  if (PSI_server == NULL)
    return;

  count= array_elements(all_server_mutexes);
  PSI_server->register_mutex(category, all_server_mutexes, count);

  count= array_elements(all_server_rwlocks);
  PSI_server->register_rwlock(category, all_server_rwlocks, count);

  count= array_elements(all_server_conds);
  PSI_server->register_cond(category, all_server_conds, count);

  count= array_elements(all_server_threads);
  PSI_server->register_thread(category, all_server_threads, count);

  count= array_elements(all_server_files);
  PSI_server->register_file(category, all_server_files, count);
}

#endif /* HAVE_PSI_INTERFACE */