mysqld.cc

/* Copyright (C) 2000-2003 MySQL AB

   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
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   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.

   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 */

#include "mysql_priv.h"
#include <m_ctype.h>
#include <my_dir.h>
#include "sql_acl.h"
#include "slave.h"
#include "sql_repl.h"
#include "repl_failsafe.h"
#include "stacktrace.h"
#ifdef HAVE_BERKELEY_DB
#include "ha_berkeley.h"
#endif
#ifdef HAVE_INNOBASE_DB
#include "ha_innodb.h"
#endif
#include "ha_myisam.h"
#ifdef HAVE_ISAM
#include "ha_isam.h"
#endif
#include <nisam.h>
#include <thr_alarm.h>
#include <ft_global.h>
#include <errmsg.h>

#define mysqld_charset &my_charset_latin1

#ifndef DBUG_OFF
#define ONE_THREAD
#endif

#define SHUTDOWN_THD
#define MAIN_THD
#define SIGNAL_THD

#ifdef HAVE_purify
#define IF_PURIFY(A,B) (A)
#else
#define IF_PURIFY(A,B) (B)
#endif

/* stack traces are only supported on linux intel */
#if defined(__linux__)  && defined(__i386__) && defined(USE_PSTACK)
#define	HAVE_STACK_TRACE_ON_SEGV
#include "../pstack/pstack.h"
char pstack_file_name[80];
#endif /* __linux__ */

#if defined(HAVE_DEC_3_2_THREADS) || defined(SIGNALS_DONT_BREAK_READ)
#define HAVE_CLOSE_SERVER_SOCK 1
#endif

extern "C" {					// Because of SCO 3.2V4.2
#include <errno.h>
#include <sys/stat.h>
#ifndef __GNU_LIBRARY__
#define __GNU_LIBRARY__				// Skip warnings in getopt.h
#endif
#include <my_getopt.h>
#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

#if defined(OS2)
#  include <sys/un.h>
#elif !defined( __WIN__)
#  ifndef __NETWARE__
#include <sys/resource.h>
#  endif /* __NETWARE__ */
#ifdef HAVE_SYS_UN_H
#  include <sys/un.h>
#endif
#include <netdb.h>
#ifdef HAVE_SELECT_H
#  include <select.h>
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#include <sys/utsname.h>
#endif /* __WIN__ */

#ifdef HAVE_LIBWRAP
#include <tcpd.h>
#include <syslog.h>
#ifdef NEED_SYS_SYSLOG_H
#include <sys/syslog.h>
#endif /* NEED_SYS_SYSLOG_H */
int allow_severity = LOG_INFO;
int deny_severity = LOG_WARNING;

#ifdef __STDC__
#define my_fromhost(A)	   fromhost(A)
#define my_hosts_access(A) hosts_access(A)
#define my_eval_client(A)  eval_client(A)
#else
#define my_fromhost(A)	   fromhost()
#define my_hosts_access(A) hosts_access()
#define my_eval_client(A)  eval_client()
#endif /* __STDC__ */
#endif /* HAVE_LIBWRAP */

#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif

#ifdef __NETWARE__
#include <nks/vm.h>
#include <library.h>
#include <monitor.h>

static event_handle_t eh;
static Report_t ref;
#endif /* __NETWARE__ */

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

#if defined(__FreeBSD__) && defined(HAVE_IEEEFP_H)
#include <ieeefp.h>
#ifdef HAVE_FP_EXCEPT				// Fix type conflict
typedef fp_except fp_except_t;
#endif

  /* We can't handle floating point expections with threads, so disable
     this on freebsd
  */

inline void reset_floating_point_exceptions()
{
  /* Don't fall for overflow, underflow,divide-by-zero or loss of precision */
#if defined(__i386__)
  fpsetmask(~(FP_X_INV | FP_X_DNML | FP_X_OFL | FP_X_UFL | FP_X_DZ |
	      FP_X_IMP));
#else
 fpsetmask(~(FP_X_INV |             FP_X_OFL | FP_X_UFL | FP_X_DZ |
	     FP_X_IMP));
#endif
}
#else
#define reset_floating_point_exceptions()
#endif /* __FreeBSD__ && HAVE_IEEEFP_H */

} /* cplusplus */


#if defined(HAVE_LINUXTHREADS)
#define THR_KILL_SIGNAL SIGINT
#else
#define THR_KILL_SIGNAL SIGUSR2		// Can't use this with LinuxThreads
#endif
#define MYSQL_KILL_SIGNAL SIGTERM

#ifdef HAVE_GLIBC2_STYLE_GETHOSTBYNAME_R
#include <sys/types.h>
#else
#include <my_pthread.h>			// For thr_setconcurency()
#endif
#if defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE) && !defined(HAVE_mit_thread)
#define SET_RLIMIT_NOFILE
#endif

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


/* Set prefix for windows binary */
#ifdef __WIN__
#undef MYSQL_SERVER_SUFFIX
#ifdef __NT__
#if defined(HAVE_BERKELEY_DB)
#define MYSQL_SERVER_SUFFIX "-max-nt"
#else
#define MYSQL_SERVER_SUFFIX "-nt"
#endif /* ...DB */
#elif defined(HAVE_BERKELEY_DB)
#define MYSQL_SERVER_SUFFIX "-max"
#else
#define MYSQL_SERVER_SUFFIX ""
#endif /* __NT__ */
#endif /* __WIN__ */


/* Constants */

const char *show_comp_option_name[]= {"YES", "NO", "DISABLED"};
const char *sql_mode_names[] =
{
  "REAL_AS_FLOAT", "PIPES_AS_CONCAT", "ANSI_QUOTES", "IGNORE_SPACE",
  "?", "ONLY_FULL_GROUP_BY", "NO_UNSIGNED_SUBTRACTION",
  "POSTGRESQL", "ORACLE", "MSSQL", "DB2", "SAPDB", "NO_KEY_OPTIONS",
  "NO_TABLE_OPTIONS", "NO_FIELD_OPTIONS", "MYSQL323", "MYSQL40", "ANSI",
  NullS
};
TYPELIB sql_mode_typelib= { array_elements(sql_mode_names)-1,"",
			    sql_mode_names };
const char *first_keyword= "first", *binary_keyword= "BINARY";
const char *localhost= "localhost", *delayed_user= "DELAYED";
#if SIZEOF_OFF_T > 4 && defined(BIG_TABLES)
#define GET_HA_ROWS GET_ULL
#else
#define GET_HA_ROWS GET_ULONG
#endif

bool opt_large_files= sizeof(my_off_t) > 4;
arg_cmp_func Arg_comparator::comparator_matrix[4][2] =
{{&Arg_comparator::compare_string, &Arg_comparator::compare_e_string},
 {&Arg_comparator::compare_real, &Arg_comparator::compare_e_real},
 {&Arg_comparator::compare_int, &Arg_comparator::compare_e_int},
 {&Arg_comparator::compare_row, &Arg_comparator::compare_e_row}};


/* Global variables */

bool opt_log, opt_update_log, opt_bin_log, opt_slow_log;
bool opt_error_log= IF_WIN(1,0);
bool opt_disable_networking=0, opt_skip_show_db=0;
bool server_id_supplied = 0;
bool opt_endinfo,using_udf_functions, locked_in_memory;
bool opt_using_transactions, using_update_log;
bool volatile abort_loop, select_thread_in_use, signal_thread_in_use;
bool volatile ready_to_exit, shutdown_in_progress, grant_option;

my_bool opt_skip_slave_start = 0; // If set, slave is not autostarted
my_bool opt_reckless_slave = 0;
my_bool opt_enable_named_pipe= 0;
my_bool opt_local_infile, opt_external_locking, opt_slave_compressed_protocol;
my_bool opt_safe_user_create = 0, opt_no_mix_types = 0;
my_bool lower_case_table_names, opt_old_rpl_compat;
my_bool opt_show_slave_auth_info, opt_sql_bin_update = 0;
my_bool opt_log_slave_updates= 0, opt_old_passwords=0, use_old_passwords=0;
my_bool	opt_console= 0, opt_bdb, opt_innodb, opt_isam;
my_bool opt_readonly, use_temp_pool, relay_log_purge;
volatile bool mqh_used = 0;

uint mysqld_port, test_flags, select_errors, dropping_tables, ha_open_options;
uint delay_key_write_options, protocol_version;
uint volatile thread_count, thread_running, kill_cached_threads, wake_thread;

ulong back_log, connect_timeout, concurrency;
ulong server_id, thd_startup_options;
ulong table_cache_size, thread_stack, thread_stack_min, what_to_log;
ulong query_buff_size, slow_launch_time, slave_open_temp_tables;
ulong open_files_limit, max_binlog_size;
ulong slave_net_timeout;
ulong thread_cache_size=0, binlog_cache_size=0, max_binlog_cache_size=0;
ulong query_cache_size=0;
ulong com_stat[(uint) SQLCOM_END], com_other;
ulong bytes_sent, bytes_received, net_big_packet_count;
ulong refresh_version=1L,flush_version=1L;	/* Increments on each reload */
ulong query_id, long_query_count, aborted_threads, aborted_connects;
ulong delayed_insert_timeout, delayed_insert_limit, delayed_queue_size;
ulong delayed_insert_threads, delayed_insert_writes, delayed_rows_in_use;
ulong delayed_insert_errors,flush_time, thread_created;
ulong filesort_rows, filesort_range_count, filesort_scan_count;
ulong filesort_merge_passes;
ulong select_range_check_count, select_range_count, select_scan_count;
ulong select_full_range_join_count,select_full_join_count;
ulong specialflag=0,opened_tables=0,created_tmp_tables=0,
      created_tmp_disk_tables=0;
ulong max_connections,max_insert_delayed_threads,max_used_connections,
      max_connect_errors, max_user_connections = 0;
ulong thread_id=1L,current_pid;
ulong slow_launch_threads = 0;
ulong expire_logs_days = 0;
ulong rpl_recovery_rank=0;
ulong my_bind_addr;			/* the address we bind to */
volatile ulong cached_thread_count= 0;

ulonglong keybuff_size;

double log_10[32];			/* 10 potences */

time_t start_time;

char mysql_home[FN_REFLEN], pidfile_name[FN_REFLEN], time_zone[30];
char log_error_file[FN_REFLEN], glob_hostname[FN_REFLEN];
char* log_error_file_ptr= log_error_file;
char mysql_real_data_home[FN_REFLEN],
     language[LIBLEN],reg_ext[FN_EXTLEN], mysql_charsets_dir[FN_REFLEN],
     max_sort_char,*mysqld_user,*mysqld_chroot, *opt_init_file;
char *language_ptr, *default_collation_name, *default_character_set_name;
char mysql_data_home_buff[2], *mysql_data_home=mysql_real_data_home;
char server_version[SERVER_VERSION_LENGTH]=MYSQL_SERVER_VERSION;
char *mysqld_unix_port, *opt_mysql_tmpdir;
char *my_bind_addr_str;
const char **errmesg;			/* Error messages */
const char *myisam_recover_options_str="OFF";
const char *sql_mode_str="OFF";

FILE *bootstrap_file;

I_List<i_string_pair> replicate_rewrite_db;
I_List<i_string> replicate_do_db, replicate_ignore_db;
// allow the user to tell us which db to replicate and which to ignore
I_List<i_string> binlog_do_db, binlog_ignore_db;
I_List<THD> threads,thread_cache;
I_List<NAMED_LIST> key_caches;

struct system_variables global_system_variables;
struct system_variables max_system_variables;

MY_TMPDIR mysql_tmpdir_list;
DATE_FORMAT dayord;
MY_BITMAP temp_pool;

CHARSET_INFO *system_charset_info, *files_charset_info ;
CHARSET_INFO *national_charset_info, *table_alias_charset;

SHOW_COMP_OPTION have_berkeley_db, have_innodb, have_isam;
SHOW_COMP_OPTION have_raid, have_openssl, have_symlink, have_query_cache;
SHOW_COMP_OPTION have_crypt, have_compress;

/* Thread specific variables */

pthread_key(MEM_ROOT*,THR_MALLOC);
pthread_key(THD*, THR_THD);
pthread_mutex_t LOCK_mysql_create_db, LOCK_Acl, LOCK_open, LOCK_thread_count,
		LOCK_mapped_file, LOCK_status,
		LOCK_error_log,
		LOCK_delayed_insert, LOCK_delayed_status, LOCK_delayed_create,
		LOCK_crypt, LOCK_bytes_sent, LOCK_bytes_received,
	        LOCK_global_system_variables,
		LOCK_user_conn, LOCK_slave_list, LOCK_active_mi;
rw_lock_t	LOCK_grant;
pthread_cond_t COND_refresh,COND_thread_count, COND_slave_stopped,
	       COND_slave_start;
pthread_cond_t COND_thread_cache,COND_flush_thread_cache;
pthread_t signal_thread;
pthread_attr_t connection_attrib;

/* replication parameters, if master_host is not NULL, we are a slave */
my_bool master_ssl;
uint master_port= MYSQL_PORT, master_connect_retry = 60;
uint report_port= MYSQL_PORT;
ulong master_retry_count=0;
char *master_user, *master_password, *master_host, *master_info_file;
char *relay_log_info_file, *master_ssl_key, *master_ssl_cert;
char *master_ssl_capath, *master_ssl_cipher, *report_user;
char *report_password, *report_host;
char *opt_relay_logname = 0, *opt_relaylog_index_name=0;

/* Static variables */

static bool kill_in_progress, segfaulted;
static my_bool opt_do_pstack, opt_noacl, opt_bootstrap, opt_myisam_log;
static int cleanup_done;
static ulong opt_specialflag, opt_myisam_block_size;
static char *opt_logname, *opt_update_logname, *opt_binlog_index_name;
static char *opt_slow_logname;
static char *mysql_home_ptr, *pidfile_name_ptr;
static char **defaults_argv;
static char *opt_bin_logname;

static my_socket unix_sock,ip_sock;
static pthread_t select_thread;
struct rand_struct sql_rand; // used by sql_class.cc:THD::THD()

/* OS specific variables */

#ifdef __WIN__
#undef	 getpid
#include <process.h>

static pthread_cond_t COND_handler_count;
static uint handler_count;
static bool start_mode=0, use_opt_args;
static int opt_argc;
static char **opt_argv;

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

#ifdef __NT__
static char szPipeName [ 257 ];
static SECURITY_ATTRIBUTES saPipeSecurity;
static SECURITY_DESCRIPTOR sdPipeDescriptor;
static HANDLE hPipe = INVALID_HANDLE_VALUE;
#endif

#ifdef OS2
pthread_cond_t eventShutdown;
#endif

#ifndef EMBEDDED_LIBRARY
bool mysql_embedded=0;
#else
bool mysql_embedded=1;
#endif

#ifndef DBUG_OFF
static const char* default_dbug_option;
#endif
#ifdef HAVE_LIBWRAP
char *libwrapName= NULL;
#endif
#ifdef HAVE_QUERY_CACHE
ulong query_cache_limit= 0;
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;
bool opt_enable_shared_memory;
#endif

#include "sslopt-vars.h"
#ifdef HAVE_OPENSSL
char *des_key_file;
struct st_VioSSLAcceptorFd *ssl_acceptor_fd;
#endif /* HAVE_OPENSSL */


/* Function declarations */

static void start_signal_handler(void);
extern "C" pthread_handler_decl(signal_hand, arg);
static void mysql_init_variables(void);
static void get_options(int argc,char **argv);
static int init_thread_environment();
static char *get_relative_path(const char *path);
static void fix_paths(void);
extern "C" pthread_handler_decl(handle_connections_sockets,arg);
extern "C" pthread_handler_decl(kill_server_thread,arg);
static int bootstrap(FILE *file);
static void close_server_sock();
static bool read_init_file(char *file_name);
#ifdef __NT__
extern "C" pthread_handler_decl(handle_connections_namedpipes,arg);
#endif
#ifdef HAVE_SMEM
static pthread_handler_decl(handle_connections_shared_memory,arg);
#endif
extern "C" pthread_handler_decl(handle_slave,arg);
#ifdef SET_RLIMIT_NOFILE
static uint set_maximum_open_files(uint max_file_limit);
#endif
static ulong find_bit_type(const char *x, TYPELIB *bit_lib);
static void clean_up(bool print_message);
static void clean_up_mutexes(void);

#ifndef EMBEDDED_LIBRARY
/****************************************************************************
** 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 flush thread */
  (void) pthread_mutex_lock(&LOCK_manager);
  if (manager_thread_in_use)
  {
    DBUG_PRINT("quit",("killing manager thread: %lx",manager_thread));
   (void) pthread_cond_signal(&COND_manager);
  }
  (void) pthread_mutex_unlock(&LOCK_manager);

  /* kill connection thread */
#if !defined(__WIN__) && !defined(__EMX__) && !defined(OS2) && !defined(__NETWARE__)
  DBUG_PRINT("quit",("waiting for select thread: %lx",select_thread));
  (void) pthread_mutex_lock(&LOCK_thread_count);

  while (select_thread_in_use)
  {
    struct timespec abstime;
    int error;
    LINT_INIT(error);
#ifndef DONT_USE_THR_ALARM
    if (pthread_kill(select_thread,THR_CLIENT_ALARM))
      break;					// allready dead
#endif
    set_timespec(abstime, 2);
    for (uint tmp=0 ; tmp < 10 ; tmp++)
    {
      error=pthread_cond_timedwait(&COND_thread_count,&LOCK_thread_count,
				   &abstime);
      if (error != EINTR)
	break;
    }
#ifdef EXTRA_DEBUG
    if (error != 0 && !count++)
      sql_print_error("Got error %d from pthread_cond_timedwait",error);
#endif
    close_server_sock();
  }
  (void) pthread_mutex_unlock(&LOCK_thread_count);
#endif /* __WIN__ */


  /* Abort listening to new connections */
  DBUG_PRINT("quit",("Closing sockets"));
  if ( !opt_disable_networking )
  {
    if (ip_sock != INVALID_SOCKET)
    {
      (void) shutdown(ip_sock,2);
      (void) closesocket(ip_sock);
      ip_sock= INVALID_SOCKET;
    }
  }
#ifdef __NT__
  if (hPipe != INVALID_HANDLE_VALUE && opt_enable_named_pipe)
  {
    HANDLE temp;
    DBUG_PRINT( "quit", ("Closing named pipes") );

    /* Create connection to the handle named pipe handler to break the loop */
    if ((temp = CreateFile(szPipeName,
			   GENERIC_READ | GENERIC_WRITE,
			   0,
			   NULL,
			   OPEN_EXISTING,
			   0,
			   NULL )) != INVALID_HANDLE_VALUE)
    {
      WaitNamedPipe(szPipeName, 1000);
      DWORD dwMode = PIPE_READMODE_BYTE | PIPE_WAIT;
      SetNamedPipeHandleState(temp, &dwMode, NULL, NULL);
      CancelIo(temp);
      DisconnectNamedPipe(temp);
      CloseHandle(temp);
    }
  }
#endif
#ifdef HAVE_SYS_UN_H
  if (unix_sock != INVALID_SOCKET)
  {
    (void) shutdown(unix_sock,2);
    (void) closesocket(unix_sock);
    (void) unlink(mysqld_unix_port);
    unix_sock= INVALID_SOCKET;
  }
#endif
  end_thr_alarm(0);			 // Abort old alarms.
  end_slave();

  /* First signal all threads that it's time to die */

  THD *tmp;
  (void) pthread_mutex_lock(&LOCK_thread_count); // For unlink from list

  I_List_iterator<THD> it(threads);
  while ((tmp=it++))
  {
    DBUG_PRINT("quit",("Informing thread %ld that it's time to die",
		       tmp->thread_id));
    tmp->killed=1;
    if (tmp->mysys_var)
    {
      tmp->mysys_var->abort=1;
      pthread_mutex_lock(&tmp->mysys_var->mutex);
      if (tmp->mysys_var->current_cond)
      {
	pthread_mutex_lock(tmp->mysys_var->current_mutex);
	pthread_cond_broadcast(tmp->mysys_var->current_cond);
	pthread_mutex_unlock(tmp->mysys_var->current_mutex);
      }
      pthread_mutex_unlock(&tmp->mysys_var->mutex);
    }
  }
  (void) pthread_mutex_unlock(&LOCK_thread_count); // For unlink from list

  if (thread_count)
    sleep(1);					// Give threads time to die

  /* Force remaining threads to die by closing the connection to the client */

  for (;;)
  {
    DBUG_PRINT("quit",("Locking LOCK_thread_count"));
    (void) pthread_mutex_lock(&LOCK_thread_count); // For unlink from list
    if (!(tmp=threads.get()))
    {
      DBUG_PRINT("quit",("Unlocking LOCK_thread_count"));
      (void) pthread_mutex_unlock(&LOCK_thread_count);
      break;
    }
#ifndef __bsdi__				// Bug in BSDI kernel
    if (tmp->net.vio)
    {
      sql_print_error(ER(ER_FORCING_CLOSE),my_progname,
		      tmp->thread_id,tmp->user ? tmp->user : "");
      close_connection(tmp,0,0);
    }
#endif
    DBUG_PRINT("quit",("Unlocking LOCK_thread_count"));
    (void) pthread_mutex_unlock(&LOCK_thread_count);
  }
  /* All threads has now been aborted */
  DBUG_PRINT("quit",("Waiting for threads to die (count=%u)",thread_count));
  (void) pthread_mutex_lock(&LOCK_thread_count);
  while (thread_count)
  {
    (void) pthread_cond_wait(&COND_thread_count,&LOCK_thread_count);
    DBUG_PRINT("quit",("One thread died (count=%u)",thread_count));
  }
  (void) pthread_mutex_unlock(&LOCK_thread_count);

  DBUG_PRINT("quit",("close_connections thread"));
  DBUG_VOID_RETURN;
}
#endif /*EMBEDDED_LIBRARY*/


static void close_server_sock()
{
#ifdef HAVE_CLOSE_SERVER_SOCK
  DBUG_ENTER("close_server_sock");
  my_socket tmp_sock;
  tmp_sock=ip_sock;
  if (tmp_sock != INVALID_SOCKET)
  {
    ip_sock=INVALID_SOCKET;
    DBUG_PRINT("info",("calling shutdown on TCP/IP socket"));
    VOID(shutdown(tmp_sock,2));
#if defined(__NETWARE__)
    /*
      The following code is disabled for normal systems as it causes MySQL
      to hang on AIX 4.3 during shutdown
    */
    DBUG_PRINT("info",("calling closesocket on TCP/IP socket"));
    VOID(closesocket(tmp_sock));
#endif
  }
  tmp_sock=unix_sock;
  if (tmp_sock != INVALID_SOCKET)
  {
    unix_sock=INVALID_SOCKET;
    DBUG_PRINT("info",("calling shutdown on unix socket"));
    VOID(shutdown(tmp_sock,2));
#if defined(__NETWARE__)
    /*
      The following code is disabled for normal systems as it causes MySQL
      AIX 4.3 during shutdown (not tested, but likely)
    */
    DBUG_PRINT("info",("calling closesocket on unix/IP socket"));
    VOID(closesocket(tmp_sock));
#endif
    VOID(unlink(mysqld_unix_port));
  }
  DBUG_VOID_RETURN;
#endif
}


void kill_mysql(void)
{
  DBUG_ENTER("kill_mysql");

#ifdef SIGNALS_DONT_BREAK_READ
  abort_loop=1;					// Break connection loops
  close_server_sock();				// Force accept to wake up
#endif

#if defined(__WIN__)
#if !defined(EMBEDDED_LIBRARY)
  {
    if (!SetEvent(hEventShutdown))
    {
      DBUG_PRINT("error",("Got error: %ld from SetEvent",GetLastError()));
    }
    /*
      or:
      HANDLE hEvent=OpenEvent(0, FALSE, "MySqlShutdown");
      SetEvent(hEventShutdown);
      CloseHandle(hEvent);
    */
  }
#endif
#elif defined(OS2)
  pthread_cond_signal( &eventShutdown);		// post semaphore
#elif defined(HAVE_PTHREAD_KILL)
  if (pthread_kill(signal_thread, MYSQL_KILL_SIGNAL))
  {
    DBUG_PRINT("error",("Got error %d from pthread_kill",errno)); /* purecov: inspected */
  }
#elif !defined(SIGNALS_DONT_BREAK_READ)
  kill(current_pid, MYSQL_KILL_SIGNAL);
#endif
  DBUG_PRINT("quit",("After pthread_kill"));
  shutdown_in_progress=1;			// Safety if kill didn't work
#ifdef SIGNALS_DONT_BREAK_READ
  if (!kill_in_progress)
  {
    pthread_t tmp;
    abort_loop=1;
    if (pthread_create(&tmp,&connection_attrib, kill_server_thread,
			   (void*) 0))
      sql_print_error("Error: Can't create thread to kill server");
  }
#endif
  DBUG_VOID_RETURN;
}

	/* Force server down. kill all connections and threads and exit */

#if defined(OS2) || defined(__NETWARE__)
extern "C" void kill_server(int sig_ptr)
#define RETURN_FROM_KILL_SERVER DBUG_VOID_RETURN
#elif !defined(__WIN__)
static void *kill_server(void *sig_ptr)
#define RETURN_FROM_KILL_SERVER DBUG_RETURN(0)
#else
static void __cdecl kill_server(int sig_ptr)
#define RETURN_FROM_KILL_SERVER DBUG_VOID_RETURN
#endif
{
  int sig=(int) (long) sig_ptr;			// This is passed a int
  DBUG_ENTER("kill_server");
#ifndef EMBEDDED_LIBRARY
  // if there is a signal during the kill in progress, ignore the other
  if (kill_in_progress)				// Safety
    RETURN_FROM_KILL_SERVER;
  kill_in_progress=TRUE;
  abort_loop=1;					// This should be set
  signal(sig,SIG_IGN);
  if (sig == MYSQL_KILL_SIGNAL || sig == 0)
    sql_print_error(ER(ER_NORMAL_SHUTDOWN),my_progname);
  else
    sql_print_error(ER(ER_GOT_SIGNAL),my_progname,sig); /* purecov: inspected */

#if defined(__NETWARE__) || (defined(USE_ONE_SIGNAL_HAND) && !defined(__WIN__) && !defined(OS2))
  my_thread_init();				// If this is a new thread
#endif
  close_connections();
  if (sig != MYSQL_KILL_SIGNAL && sig != 0)
    unireg_abort(1);				/* purecov: inspected */
  else
    unireg_end();
#ifdef __NETWARE__
  pthread_join(select_thread, NULL);		// wait for main thread
#endif /* __NETWARE__ */
  
  pthread_exit(0);				/* purecov: deadcode */

#endif /* EMBEDDED_LIBRARY */
  RETURN_FROM_KILL_SERVER;
}


#if defined(USE_ONE_SIGNAL_HAND) || (defined(__NETWARE__) && defined(SIGNALS_DONT_BREAK_READ))
extern "C" pthread_handler_decl(kill_server_thread,arg __attribute__((unused)))
{
  SHUTDOWN_THD;
  my_thread_init();				// Initialize new thread
  kill_server(0);
  my_thread_end();				// Normally never reached
  return 0;
}
#endif

#if defined(__amiga__)
#undef sigset
#define sigset signal
#endif

extern "C" sig_handler print_signal_warning(int sig)
{
  if (!DBUG_IN_USE)
  {
    if (global_system_variables.log_warnings)
      sql_print_error("Warning: Got signal %d from thread %d",
		      sig,my_thread_id());
  }
#ifdef DONT_REMEMBER_SIGNAL
  sigset(sig,print_signal_warning);		/* int. thread system calls */
#endif
#if !defined(__WIN__) && !defined(OS2) && !defined(__NETWARE__)
  if (sig == SIGALRM)
    alarm(2);					/* reschedule alarm */
#endif
}

/*
  cleanup all memory and end program nicely

  SYNOPSIS
    unireg_end()

  NOTES
    This function never returns.

    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().
*/

void unireg_end(void)
{
  clean_up(1);
  my_thread_end();
#if defined(SIGNALS_DONT_BREAK_READ) && !defined(__NETWARE__)
  exit(0);
#else
  pthread_exit(0);				// Exit is in main thread
#endif
}


extern "C" void unireg_abort(int exit_code)
{
  DBUG_ENTER("unireg_abort");
  if (exit_code)
    sql_print_error("Aborting\n");
  clean_up(exit_code || !opt_bootstrap); /* purecov: inspected */
  DBUG_PRINT("quit",("done with cleanup in unireg_abort"));
  my_thread_end();
  clean_up_mutexes();
  my_end(opt_endinfo ? MY_CHECK_ERROR | MY_GIVE_INFO : 0);
  exit(exit_code); /* purecov: inspected */
}


void clean_up(bool print_message)
{
  DBUG_PRINT("exit",("clean_up"));
  if (cleanup_done++)
    return; /* purecov: inspected */

  mysql_log.cleanup();
  mysql_slow_log.cleanup();
  mysql_update_log.cleanup();
  mysql_bin_log.cleanup();

#ifdef HAVE_REPLICATION
  if (use_slave_mask)
    bitmap_free(&slave_error_mask);
#endif
  acl_free(1);
  grant_free();
  query_cache_destroy();
  table_cache_free();
  hostname_cache_free();
  item_user_lock_free();
  lex_free();				/* Free some memory */
  set_var_free();
#ifdef HAVE_DLOPEN
  if (!opt_noacl)
    udf_free();
#endif
  (void) ha_panic(HA_PANIC_CLOSE);	/* close all tables and logs */
  end_key_cache();
  delete_elements(&key_caches, free_key_cache);
  end_thr_alarm(1);			/* Free allocated memory */
#ifdef USE_RAID
  end_raid();
#endif
  if (defaults_argv)
    free_defaults(defaults_argv);
  free_tmpdir(&mysql_tmpdir_list);
#ifdef HAVE_REPLICATION
  my_free(slave_load_tmpdir,MYF(MY_ALLOW_ZERO_PTR));
#endif
  x_free(opt_bin_logname);
  x_free(opt_relay_logname);
  bitmap_free(&temp_pool);
  free_max_user_conn();
#ifdef HAVE_REPLICATION
  end_slave_list();
#endif
#ifdef HAVE_OPENSSL
  if (ssl_acceptor_fd)
    my_free((gptr) ssl_acceptor_fd, MYF(MY_ALLOW_ZERO_PTR));
  free_des_key_file();
#endif /* HAVE_OPENSSL */
#ifdef USE_REGEX
  regex_end();
#endif

  if (print_message && errmesg)
    sql_print_error(ER(ER_SHUTDOWN_COMPLETE),my_progname);
#if !defined(__WIN__) && !defined(EMBEDDED_LIBRARY)
  if (!opt_bootstrap)
    (void) my_delete(pidfile_name,MYF(0));	// This may not always exist
#endif
  x_free((gptr) my_errmsg[ERRMAPP]);	/* Free messages */
  DBUG_PRINT("quit", ("Error messages freed"));
  /* Tell main we are ready */
  (void) pthread_mutex_lock(&LOCK_thread_count);
  DBUG_PRINT("quit", ("got thread count lock"));
  ready_to_exit=1;
  /* do the broadcast inside the lock to ensure that my_end() is not called */
  (void) pthread_cond_broadcast(&COND_thread_count);
  (void) pthread_mutex_unlock(&LOCK_thread_count);
  /*
    The following lines may never be executed as the main thread may have
    killed us
  */
  DBUG_PRINT("quit", ("done with cleanup"));
} /* clean_up */


static void clean_up_mutexes()
{
  (void) pthread_mutex_destroy(&LOCK_mysql_create_db);
  (void) pthread_mutex_destroy(&LOCK_Acl);
  (void) rwlock_destroy(&LOCK_grant);
  (void) pthread_mutex_destroy(&LOCK_open);
  (void) pthread_mutex_destroy(&LOCK_thread_count);
  (void) pthread_mutex_destroy(&LOCK_mapped_file);
  (void) pthread_mutex_destroy(&LOCK_status);
  (void) pthread_mutex_destroy(&LOCK_error_log);
  (void) pthread_mutex_destroy(&LOCK_delayed_insert);
  (void) pthread_mutex_destroy(&LOCK_delayed_status);
  (void) pthread_mutex_destroy(&LOCK_delayed_create);
  (void) pthread_mutex_destroy(&LOCK_manager);
  (void) pthread_mutex_destroy(&LOCK_crypt);
  (void) pthread_mutex_destroy(&LOCK_bytes_sent);
  (void) pthread_mutex_destroy(&LOCK_bytes_received);
  (void) pthread_mutex_destroy(&LOCK_user_conn);
#ifdef HAVE_REPLICATION
  (void) pthread_mutex_destroy(&LOCK_rpl_status);
  (void) pthread_cond_destroy(&COND_rpl_status);
#endif
  (void) pthread_mutex_destroy(&LOCK_active_mi);
  (void) pthread_mutex_destroy(&LOCK_global_system_variables);
  (void) pthread_cond_destroy(&COND_thread_count);
  (void) pthread_cond_destroy(&COND_refresh);
  (void) pthread_cond_destroy(&COND_thread_cache);
  (void) pthread_cond_destroy(&COND_flush_thread_cache);
  (void) pthread_cond_destroy(&COND_manager);
}

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

static void set_ports()
{
  char	*env;
  if (!mysqld_port && !opt_disable_networking)
  {					// Get port if not from commandline
    struct  servent *serv_ptr;
    mysqld_port= MYSQL_PORT;
    if ((serv_ptr= getservbyname("mysql", "tcp")))
      mysqld_port= ntohs((u_short) serv_ptr->s_port); /* purecov: inspected */
    if ((env = getenv("MYSQL_TCP_PORT")))
      mysqld_port= (uint) atoi(env);		/* purecov: inspected */
  }
  if (!mysqld_unix_port)
  {
#ifdef __WIN__
    mysqld_unix_port= (char*) MYSQL_NAMEDPIPE;
#else
    mysqld_unix_port= (char*) MYSQL_UNIX_ADDR;
#endif
    if ((env = getenv("MYSQL_UNIX_PORT")))
      mysqld_unix_port= env;			/* purecov: inspected */
  }
}

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

static void set_user(const char *user)
{
#if !defined(__WIN__) && !defined(OS2) && !defined(__NETWARE__)
  struct passwd *ent;
  uid_t user_id= geteuid();

  // don't bother if we aren't superuser
  if (user_id)
  {
    if (user)
    {
      /* Don't give a warning, if real user is same as given with --user */
      struct passwd *user_info= getpwnam(user);

      if (!user_info || user_id != user_info->pw_uid)
	fprintf(stderr,
		"Warning: One can only use the --user switch if running as root\n");
    }
    return;
  }
  else if (!user)
  {
    if (!opt_bootstrap)
    {
      fprintf(stderr,"Fatal error: Please read \"Security\" section of the manual to find out how to run mysqld as root!\n");
      unireg_abort(1);
    }
    return;
  }
  if (!strcmp(user,"root"))
    return;				// Avoid problem with dynamic libraries

  uid_t uid;
  if (!(ent = getpwnam(user)))
  {
    // allow a numeric uid to be used
    const char *pos;
    for (pos=user; my_isdigit(mysqld_charset,*pos); pos++) ;
    if (*pos)					// Not numeric id
    {
      fprintf(stderr,"Fatal error: Can't change to run as user '%s' ;  Please check that the user exists!\n",user);
      unireg_abort(1);
    }
    uid=atoi(user);				// Use numberic uid
  }
  else
  {
#ifdef HAVE_INITGROUPS
    initgroups((char*) user,ent->pw_gid);
#endif
    if (setgid(ent->pw_gid) == -1)
    {
      sql_perror("setgid");
      unireg_abort(1);
    }
    uid=ent->pw_uid;
  }

  if (setuid(uid) == -1)
  {
    sql_perror("setuid");
    unireg_abort(1);
  }
#endif
}

/* Change root user if started with  --chroot */

static void set_root(const char *path)
{
#if !defined(__WIN__) && !defined(__EMX__) && !defined(OS2) && !defined(__NETWARE__)
  if (chroot(path) == -1)
  {
    sql_perror("chroot");
    unireg_abort(1);
  }
  my_setwd("/", MYF(0));
#endif
}


static void server_init(void)
{
  struct sockaddr_in	IPaddr;
#ifdef HAVE_SYS_UN_H
  struct sockaddr_un	UNIXaddr;
#endif
  int	arg=1;
  DBUG_ENTER("server_init");

#ifdef	__WIN__
  if ( !opt_disable_networking )
  {
    WSADATA WsaData;
    if (SOCKET_ERROR == WSAStartup (0x0101, &WsaData))
    {
      my_message(0,"WSAStartup Failed\n",MYF(0));
      unireg_abort(1);
    }
  }
#endif /* __WIN__ */

  set_ports();

  if (mysqld_port != 0 && !opt_disable_networking && !opt_bootstrap)
  {
    DBUG_PRINT("general",("IP Socket is %d",mysqld_port));
    ip_sock = socket(AF_INET, SOCK_STREAM, 0);
    if (ip_sock == INVALID_SOCKET)
    {
      DBUG_PRINT("error",("Got error: %d from socket()",socket_errno));
      sql_perror(ER(ER_IPSOCK_ERROR));		/* purecov: tested */
      unireg_abort(1);				/* purecov: tested */
    }
    bzero((char*) &IPaddr, sizeof(IPaddr));
    IPaddr.sin_family = AF_INET;
    IPaddr.sin_addr.s_addr = my_bind_addr;
    IPaddr.sin_port = (unsigned short) htons((unsigned short) mysqld_port);
    (void) setsockopt(ip_sock,SOL_SOCKET,SO_REUSEADDR,(char*)&arg,sizeof(arg));
    if (bind(ip_sock, my_reinterpret_cast(struct sockaddr *) (&IPaddr),
	     sizeof(IPaddr)) < 0)
    {
      DBUG_PRINT("error",("Got error: %d from bind",socket_errno));
      sql_perror("Can't start server: Bind on TCP/IP port");
      sql_print_error("Do you already have another mysqld server running on port: %d ?",mysqld_port);
      unireg_abort(1);
    }
    if (listen(ip_sock,(int) back_log) < 0)
    {
      sql_perror("Can't start server: listen() on TCP/IP port");
      sql_print_error("Error:  listen() on TCP/IP failed with error %d",
		      socket_errno);
      unireg_abort(1);
    }
  }
  set_user(mysqld_user);		// Works also with mysqld_user==NULL

#ifdef __NT__
  /* create named pipe */
  if (Service.IsNT() && mysqld_unix_port[0] && !opt_bootstrap &&
      opt_enable_named_pipe)
  {
    sprintf(szPipeName, "\\\\.\\pipe\\%s", mysqld_unix_port );
    ZeroMemory( &saPipeSecurity, sizeof(saPipeSecurity) );
    ZeroMemory( &sdPipeDescriptor, sizeof(sdPipeDescriptor) );
    if ( !InitializeSecurityDescriptor(&sdPipeDescriptor,
				       SECURITY_DESCRIPTOR_REVISION) )
    {
      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);
    }
    saPipeSecurity.nLength = sizeof( SECURITY_ATTRIBUTES );
    saPipeSecurity.lpSecurityDescriptor = &sdPipeDescriptor;
    saPipeSecurity.bInheritHandle = FALSE;
    if ((hPipe = CreateNamedPipe(szPipeName,
				 PIPE_ACCESS_DUPLEX,
				 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)
      {
	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 );
	MessageBox( NULL, (LPTSTR) lpMsgBuf, "Error from CreateNamedPipe",
		    MB_OK|MB_ICONINFORMATION );
	LocalFree( lpMsgBuf );
	unireg_abort(1);
      }
  }
#endif

#if defined(HAVE_SYS_UN_H)
  /*
  ** Create the UNIX socket
  */
  if (mysqld_unix_port[0] && !opt_bootstrap)
  {
    DBUG_PRINT("general",("UNIX Socket is %s",mysqld_unix_port));

    if ((unix_sock= socket(AF_UNIX, SOCK_STREAM, 0)) < 0)
    {
      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;
    strmov(UNIXaddr.sun_path, mysqld_unix_port);
    (void) unlink(mysqld_unix_port);
    (void) setsockopt(unix_sock,SOL_SOCKET,SO_REUSEADDR,(char*)&arg,
		      sizeof(arg));
    umask(0);
    if (bind(unix_sock, my_reinterpret_cast(struct sockaddr *) (&UNIXaddr),
	     sizeof(UNIXaddr)) < 0)
    {
      sql_perror("Can't start server : Bind on unix socket"); /* purecov: tested */
      sql_print_error("Do you already have another mysqld server running on socket: %s ?",mysqld_unix_port);
      unireg_abort(1);					/* purecov: tested */
    }
    umask(((~my_umask) & 0666));
#if defined(S_IFSOCK) && defined(SECURE_SOCKETS)
    (void) chmod(mysqld_unix_port,S_IFSOCK);	/* Fix solaris 2.6 bug */
#endif
    if (listen(unix_sock,(int) back_log) < 0)
      sql_print_error("Warning:  listen() on Unix socket failed with error %d",
		      socket_errno);
  }
#endif
  DBUG_PRINT("info",("server started"));
  DBUG_VOID_RETURN;
}


void yyerror(const char *s)
{
  THD *thd=current_thd;
  char *yytext=(char*) thd->lex.tok_start;
  /* "parse error" changed into "syntax error" between bison 1.75 and 1.875 */
  if (strcmp(s,"parse error") == 0 || strcmp(s,"syntax error") == 0)
    s=ER(ER_SYNTAX_ERROR);
  net_printf(thd,ER_PARSE_ERROR, s, yytext ? (char*) yytext : "",
	     thd->lex.yylineno);
}


#ifndef EMBEDDED_LIBRARY
void close_connection(THD *thd, uint errcode, bool lock)
{
  st_vio *vio;
  DBUG_ENTER("close_connection");
  DBUG_PRINT("enter",("fd: %s  error: '%s'",
		      thd->net.vio ? vio_description(thd->net.vio) :
		      "(not connected)",
		      errcode ? ER(errcode) : ""));
  if (lock)
    (void) pthread_mutex_lock(&LOCK_thread_count);
  if ((vio=thd->net.vio) != 0)
  {
    if (errcode)
      send_error(thd, errcode, ER(errcode));	/* purecov: inspected */
    vio_close(vio);			/* vio is freed in delete thd */
  }
  if (lock)
    (void) pthread_mutex_unlock(&LOCK_thread_count);
  DBUG_VOID_RETURN;
}
#endif /* EMBEDDED_LIBRARY */


	/* Called when a thread is aborted */
	/* ARGSUSED */

extern "C" sig_handler end_thread_signal(int sig __attribute__((unused)))
{
  THD *thd=current_thd;
  DBUG_ENTER("end_thread_signal");
  if (thd && ! thd->bootstrap)
    end_thread(thd,0);
  DBUG_VOID_RETURN;				/* purecov: deadcode */
}


void end_thread(THD *thd, bool put_in_cache)
{
  DBUG_ENTER("end_thread");
  thd->cleanup();
  (void) pthread_mutex_lock(&LOCK_thread_count);
  thread_count--;
  delete thd;

  if (put_in_cache && cached_thread_count < thread_cache_size &&
      ! abort_loop && !kill_cached_threads)
  {
    /* Don't kill the thread, just put it in cache for reuse */
    DBUG_PRINT("info", ("Adding thread to cache"))
    cached_thread_count++;
    while (!abort_loop && ! wake_thread && ! kill_cached_threads)
      (void) pthread_cond_wait(&COND_thread_cache, &LOCK_thread_count);
    cached_thread_count--;
    if (kill_cached_threads)
      pthread_cond_signal(&COND_flush_thread_cache);
    if (wake_thread)
    {
      wake_thread--;
      thd=thread_cache.get();
      thd->real_id=pthread_self();
      (void) thd->store_globals();
      threads.append(thd);
      pthread_mutex_unlock(&LOCK_thread_count);
      DBUG_VOID_RETURN;
    }
  }

  DBUG_PRINT("info", ("sending a broadcast"))

  /* Tell main we are ready */
  (void) pthread_mutex_unlock(&LOCK_thread_count);
  /* It's safe to broadcast outside a lock (COND... is not deleted here) */
  (void) pthread_cond_broadcast(&COND_thread_count);
  DBUG_PRINT("info", ("unlocked thread_count mutex"))
#ifdef ONE_THREAD
  if (!(test_flags & TEST_NO_THREADS))	// For debugging under Linux
#endif
  {
    my_thread_end();
    pthread_exit(0);
  }
  DBUG_VOID_RETURN;
}


/* Start a cached thread. LOCK_thread_count is locked on entry */

static void start_cached_thread(THD *thd)
{
  thread_cache.append(thd);
  wake_thread++;
  thread_count++;
  pthread_cond_signal(&COND_thread_cache);
}


void flush_thread_cache()
{
  (void) pthread_mutex_lock(&LOCK_thread_count);
  kill_cached_threads++;
  while (cached_thread_count)
  {
    pthread_cond_broadcast(&COND_thread_cache);
    pthread_cond_wait(&COND_flush_thread_cache,&LOCK_thread_count);
  }
  kill_cached_threads--;
  (void) pthread_mutex_unlock(&LOCK_thread_count);
}


/*
  Aborts a thread nicely. Commes here on SIGPIPE
  TODO: One should have to fix that thr_alarm know about this
  thread too.
*/

#ifdef THREAD_SPECIFIC_SIGPIPE
extern "C" sig_handler abort_thread(int sig __attribute__((unused)))
{
  THD *thd=current_thd;
  DBUG_ENTER("abort_thread");
  if (thd)
    thd->killed=1;
  DBUG_VOID_RETURN;
}
#endif

/******************************************************************************
  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
******************************************************************************/

#if defined(__WIN__) || defined(OS2)
static void init_signals(void)
{
  int signals[] = {SIGINT,SIGILL,SIGFPE,SIGSEGV,SIGTERM,SIGABRT } ;
  for (uint i=0 ; i < sizeof(signals)/sizeof(int) ; i++)
    signal( signals[i], kill_server) ;
#if defined(__WIN__)
  signal(SIGBREAK,SIG_IGN);	//ignore SIGBREAK for NT
#else
  signal(SIGBREAK, kill_server);
#endif
}

static void start_signal_handler(void)
{}

static void check_data_home(const char *path)
{}

#elif defined(__NETWARE__)

// down server event callback
void mysql_down_server_cb(void *, void *)
{
  kill_server(0);
}

// destroy callback resources
void mysql_cb_destroy(void *)
{
  UnRegisterEventNotification(eh);  // cleanup down event notification
  NX_UNWRAP_INTERFACE(ref);
}

// initialize callbacks
void mysql_cb_init()
{
  // register for down server event
  void *handle = getnlmhandle();
  rtag_t rt = AllocateResourceTag(handle, "MySQL Down Server Callback",
                                  EventSignature);
  NX_WRAP_INTERFACE((void *)mysql_down_server_cb, 2, (void **)&ref);
  eh = RegisterForEventNotification(rt, EVENT_DOWN_SERVER,
                                    EVENT_PRIORITY_APPLICATION,
                                    NULL, ref, NULL);
  NXVmRegisterExitHandler(mysql_cb_destroy, NULL);  // clean-up
}

static void init_signals(void)
{
  int signals[] = {SIGINT,SIGILL,SIGFPE,SIGSEGV,SIGTERM,SIGABRT};

  for (uint i=0 ; i < sizeof(signals)/sizeof(int) ; i++)
    signal(signals[i], kill_server);
  mysql_cb_init();  // initialize callbacks
}

static void start_signal_handler(void)
{
  // Save vm id of this process
  if (!opt_bootstrap)
  {
    File pidFile;
    if ((pidFile = my_create(pidfile_name,0664, O_WRONLY, MYF(MY_WME))) >= 0)
    {
      char buff[21];
      sprintf(buff,"%lu",(ulong) getpid());
      (void) my_write(pidFile, buff,strlen(buff),MYF(MY_WME));
      (void) my_close(pidFile,MYF(0));
    }
  }
  // no signal handler
}


/*  Warn if the data is on a Traditional volume */

static void check_data_home(const char *path)
{
}

#elif defined(__EMX__)
static void sig_reload(int signo)
{
 // Flush everything
  reload_acl_and_cache((THD*) 0,REFRESH_LOG, (TABLE_LIST*) 0, NULL);
  signal(signo, SIG_ACK);
}

static void sig_kill(int signo)
{
  if (!kill_in_progress)
  {
    abort_loop=1;				// mark abort for threads
    kill_server((void*) signo);
  }
  signal(signo, SIG_ACK);
}

static void init_signals(void)
{
  signal(SIGQUIT, sig_kill);
  signal(SIGKILL, sig_kill);
  signal(SIGTERM, sig_kill);
  signal(SIGINT,  sig_kill);
  signal(SIGHUP,  sig_reload);	// Flush everything
  signal(SIGALRM, SIG_IGN);
  signal(SIGBREAK,SIG_IGN);
  signal_thread = pthread_self();
  SIGNAL_THD;
}

static void start_signal_handler(void)
{}

static void check_data_home(const char *path)
{}

#else /* if ! __WIN__ && ! __EMX__ */

#ifdef HAVE_LINUXTHREADS
#define UNSAFE_DEFAULT_LINUX_THREADS 200
#endif

extern "C" sig_handler handle_segfault(int sig)
{
  THD *thd=current_thd;
  /*
    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
  */
  if (segfaulted)
  {
    fprintf(stderr, "Fatal signal %d while backtracing\n", sig);
    exit(1);
  }

  segfaulted = 1;
  fprintf(stderr,"\
mysqld got signal %d;\n\
This could be because you hit a bug. It is also possible that this binary\n\
or one of the libraries it was linked against is corrupt, improperly built,\n\
or misconfigured. This error can also be caused by malfunctioning hardware.\n",
	  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\
and this may fail.\n\n");
  fprintf(stderr, "key_buffer_size=%lu\n", (ulong) keybuff_size);
  fprintf(stderr, "read_buffer_size=%ld\n", global_system_variables.read_buff_size);
  fprintf(stderr, "max_used_connections=%ld\n", max_used_connections);
  fprintf(stderr, "max_connections=%ld\n", max_connections);
  fprintf(stderr, "threads_connected=%d\n", thread_count);
  fprintf(stderr, "It is possible that mysqld could use up to \n\
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_connections = %ld K\n\
bytes of memory\n", ((ulong) keybuff_size +
		     (global_system_variables.read_buff_size +
		      global_system_variables.sortbuff_size) *
		     max_connections)/ 1024);
  fprintf(stderr, "Hope that's ok; if not, decrease some variables in the equation.\n\n");

#if defined(HAVE_LINUXTHREADS)
  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\
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\
the thread stack. Please read http://www.mysql.com/doc/L/i/Linux.html\n\n",
	    thread_count);
  }
#endif /* HAVE_LINUXTHREADS */

#ifdef HAVE_STACKTRACE
  if (!(test_flags & TEST_NO_STACKTRACE))
  {
    fprintf(stderr,"thd=%p\n",thd);
    print_stacktrace(thd ? (gptr) thd->thread_stack : (gptr) 0,
		     thread_stack);
  }
  if (thd)
  {
    fprintf(stderr, "Trying to get some variables.\n\
Some pointers may be invalid and cause the dump to abort...\n");
    safe_print_str("thd->query", thd->query, 1024);
    fprintf(stderr, "thd->thread_id=%ld\n", thd->thread_id);
  }
  fprintf(stderr, "\
The manual page at http://www.mysql.com/doc/en/Crashing.html contains\n\
information that should help you find out what is causing the crash.\n");
  fflush(stderr);
#endif /* HAVE_STACKTRACE */

 if (test_flags & TEST_CORE_ON_SIGNAL)
 {
   fprintf(stderr, "Writing a core file\n");
   fflush(stderr);
   write_core(sig);
 }
 exit(1);
}

#ifndef SA_RESETHAND
#define SA_RESETHAND 0
#endif
#ifndef SA_NODEFER
#define SA_NODEFER 0
#endif

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

  sigset(THR_KILL_SIGNAL,end_thread_signal);
  sigset(THR_SERVER_ALARM,print_signal_warning); // Should never be called!

  if (!(test_flags & TEST_NO_STACKTRACE) || (test_flags & TEST_CORE_ON_SIGNAL))
  {
    sa.sa_flags = SA_RESETHAND | SA_NODEFER;
    sigemptyset(&sa.sa_mask);
    sigprocmask(SIG_SETMASK,&sa.sa_mask,NULL);

    init_stacktrace();
#if defined(__amiga__)
    sa.sa_handler=(void(*)())handle_segfault;
#else
    sa.sa_handler=handle_segfault;
#endif
    sigaction(SIGSEGV, &sa, NULL);
    sigaction(SIGABRT, &sa, NULL);
#ifdef SIGBUS
    sigaction(SIGBUS, &sa, NULL);
#endif
    sigaction(SIGILL, &sa, NULL);
    sigaction(SIGFPE, &sa, NULL);
  }

#ifdef HAVE_GETRLIMIT
  if (test_flags & TEST_CORE_ON_SIGNAL)
  {
    /* Change limits so that we will get a core file */
    struct rlimit rl;
    rl.rlim_cur = rl.rlim_max = RLIM_INFINITY;
    if (setrlimit(RLIMIT_CORE, &rl) && global_system_variables.log_warnings)
      sql_print_error("Warning: setrlimit could not change the size of core files to 'infinity';  We may not be able to generate a core file on signals");
  }
#endif
  (void) sigemptyset(&set);
#ifdef THREAD_SPECIFIC_SIGPIPE
  sigset(SIGPIPE,abort_thread);
  sigaddset(&set,SIGPIPE);
#else
  (void) signal(SIGPIPE,SIG_IGN);		// Can't know which thread
  sigaddset(&set,SIGPIPE);
#endif
  sigaddset(&set,SIGINT);
  sigaddset(&set,SIGQUIT);
  sigaddset(&set,SIGTERM);
  sigaddset(&set,SIGHUP);

  /* Fix signals if blocked by parents (can happen on Mac OS X) */
  sigemptyset(&sa.sa_mask);
  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);
#ifdef SIGTSTP
  sigaddset(&set,SIGTSTP);
#endif
  sigaddset(&set,THR_SERVER_ALARM);
  sigdelset(&set,THR_KILL_SIGNAL);		// May be SIGINT
  sigdelset(&set,THR_CLIENT_ALARM);		// For alarms
  sigprocmask(SIG_SETMASK,&set,NULL);
  pthread_sigmask(SIG_SETMASK,&set,NULL);
  DBUG_VOID_RETURN;
}


static void start_signal_handler(void)
{
  int error;
  pthread_attr_t thr_attr;
  DBUG_ENTER("start_signal_handler");

  (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);
  if (!(opt_specialflag & SPECIAL_NO_PRIOR))
    my_pthread_attr_setprio(&thr_attr,INTERRUPT_PRIOR);
  pthread_attr_setstacksize(&thr_attr, 129*1024);
#endif

  (void) pthread_mutex_lock(&LOCK_thread_count);
  if ((error=pthread_create(&signal_thread,&thr_attr,signal_hand,0)))
  {
    sql_print_error("Can't create interrupt-thread (error %d, errno: %d)",
		    error,errno);
    exit(1);
  }
  (void) pthread_cond_wait(&COND_thread_count,&LOCK_thread_count);
  pthread_mutex_unlock(&LOCK_thread_count);

  (void) pthread_attr_destroy(&thr_attr);
  DBUG_VOID_RETURN;
}


/* This threads handles all signals and alarms */

/* ARGSUSED */
extern "C" void *signal_hand(void *arg __attribute__((unused)))
{
  sigset_t set;
  int sig;
  my_thread_init();				// Init new thread
  DBUG_ENTER("signal_hand");
  signal_thread_in_use= 1;

  /*
    Setup alarm handler
    This should actually be '+ max_number_of_slaves' instead of +10,
    but the +10 should be quite safe.
  */
  init_thr_alarm(max_connections+max_insert_delayed_threads+10);
#if SIGINT != THR_KILL_SIGNAL
  (void) sigemptyset(&set);			// Setup up SIGINT for debug
  (void) sigaddset(&set,SIGINT);		// For debugging
  (void) pthread_sigmask(SIG_UNBLOCK,&set,NULL);
#endif
  (void) sigemptyset(&set);			// Setup up SIGINT for debug
#ifdef USE_ONE_SIGNAL_HAND
  (void) sigaddset(&set,THR_SERVER_ALARM);	// For alarms
#endif
  (void) sigaddset(&set,SIGQUIT);
  (void) sigaddset(&set,SIGTERM);
#if THR_CLIENT_ALARM != SIGHUP
  (void) sigaddset(&set,SIGHUP);
#endif
  (void) sigaddset(&set,SIGTSTP);

  /* Save pid to this process (or thread on Linux) */
  if (!opt_bootstrap)
  {
    File pidFile;
    if ((pidFile = my_create(pidfile_name,0664, O_WRONLY, MYF(MY_WME))) >= 0)
    {
      char buff[21];
      ulong length= my_sprintf(buff, (buff,"%lu",(ulong) getpid()));
      (void) my_write(pidFile, buff, length, MYF(MY_WME));
      (void) my_close(pidFile,MYF(0));
    }
  }
#ifdef HAVE_STACK_TRACE_ON_SEGV
  if (opt_do_pstack)
  {
    sprintf(pstack_file_name,"mysqld-%lu-%%d-%%d.backtrace", (ulong)getpid());
    pstack_install_segv_action(pstack_file_name);
  }
#endif /* HAVE_STACK_TRACE_ON_SEGV */

  /*
    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
    should not be any other pthread_cond_signal() calls.
  */
  (void) pthread_mutex_lock(&LOCK_thread_count);
  (void) pthread_mutex_unlock(&LOCK_thread_count);
  (void) pthread_cond_broadcast(&COND_thread_count);

  (void) pthread_sigmask(SIG_BLOCK,&set,NULL);
  for (;;)
  {
    int error;					// Used when debugging
    if (shutdown_in_progress && !abort_loop)
    {
      sig= SIGTERM;
      error=0;
    }
    else
      while ((error=my_sigwait(&set,&sig)) == EINTR) ;
    if (cleanup_done)
    {
      my_thread_end();
      signal_thread_in_use= 0;
      pthread_exit(0);				// Safety
    }
    switch (sig) {
    case SIGTERM:
    case SIGQUIT:
    case SIGKILL:
#ifdef EXTRA_DEBUG
      sql_print_error("Got signal %d to shutdown mysqld",sig);
#endif
      DBUG_PRINT("info",("Got signal: %d  abort_loop: %d",sig,abort_loop));
      if (!abort_loop)
      {
	abort_loop=1;				// mark abort for threads
#ifdef USE_ONE_SIGNAL_HAND
	pthread_t tmp;
	if (!(opt_specialflag & SPECIAL_NO_PRIOR))
	  my_pthread_attr_setprio(&connection_attrib,INTERRUPT_PRIOR);
	if (pthread_create(&tmp,&connection_attrib, kill_server_thread,
			   (void*) sig))
	  sql_print_error("Error: Can't create thread to kill server");
#else
	kill_server((void*) sig);	// MIT THREAD has a alarm thread
#endif
      }
      break;
    case SIGHUP:
      if (!abort_loop)
      {
	reload_acl_and_cache((THD*) 0,
			     (REFRESH_LOG | REFRESH_TABLES | REFRESH_FAST |
			      REFRESH_STATUS | REFRESH_GRANT |
			      REFRESH_THREADS | REFRESH_HOSTS),
			     (TABLE_LIST*) 0, NULL); // Flush logs
	mysql_print_status((THD*) 0);		// Send debug some info
      }
      break;
#ifdef USE_ONE_SIGNAL_HAND
    case THR_SERVER_ALARM:
      process_alarm(sig);			// Trigger alarms.
      break;
#endif
    default:
#ifdef EXTRA_DEBUG
      sql_print_error("Warning: Got signal: %d  error: %d",sig,error); /* purecov: tested */
#endif
      break;					/* purecov: tested */
    }
  }
  return(0);					/* purecov: deadcode */
}

static void check_data_home(const char *path)
{}

#endif	/* __WIN__*/


/*
  All global error messages are sent here where the first one is stored for
  the client
*/


/* ARGSUSED */
extern "C" int my_message_sql(uint error, const char *str,
			      myf MyFlags __attribute__((unused)))
{
  THD *thd;
  DBUG_ENTER("my_message_sql");
  DBUG_PRINT("error", ("Message: '%s'", str));
  if ((thd= current_thd))
  {
    /*
      thd->lex.current_select equel to zero if lex structure is not inited
      (not query command (COM_QUERY))
    */
    if (thd->lex.current_select &&
	thd->lex.current_select->no_error && !thd->is_fatal_error)
    {
      DBUG_PRINT("error", ("above error converted to warning"));
      push_warning(thd, MYSQL_ERROR::WARN_LEVEL_ERROR, error, str);
    }
    else
    {
      NET *net= &thd->net;
      net->report_error= 1;
      if (!net->last_error[0])			// Return only first message
      {
	strmake(net->last_error, str, sizeof(net->last_error)-1);
	net->last_errno= error ? error : ER_UNKNOWN_ERROR;
      }
    }
  }
  else
    sql_print_error("%s: %s",my_progname,str); /* purecov: inspected */
  DBUG_RETURN(0);
}

#ifdef __WIN__

struct utsname
{
  char nodename[FN_REFLEN];
};


int uname(struct utsname *a)
{
  return -1;
}


extern "C" pthread_handler_decl(handle_shutdown,arg)
{
  MSG msg;
  SHUTDOWN_THD;
  my_thread_init();

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

int STDCALL handle_kill(ulong ctrl_type)
{
  if (ctrl_type == CTRL_CLOSE_EVENT ||
      ctrl_type == CTRL_SHUTDOWN_EVENT)
  {
    kill_server(MYSQL_KILL_SIGNAL);
    return TRUE;
  }
  return FALSE;
}
#endif


#ifdef OS2
extern "C" pthread_handler_decl(handle_shutdown,arg)
{
  SHUTDOWN_THD;
  my_thread_init();

  // wait semaphore
  pthread_cond_wait( &eventShutdown, NULL);

  // close semaphore and kill server
  pthread_cond_destroy( &eventShutdown);

  /*
    Exit main loop on main thread, so kill will be done from
    main thread (this is thread 2)
  */
  abort_loop = 1;

  // unblock select()
  so_cancel(ip_sock);
  so_cancel(unix_sock);

  return 0;
}
#endif


const char *load_default_groups[]= { "mysqld","server",MYSQL_BASE_VERSION,0 };

bool open_log(MYSQL_LOG *log, const char *hostname,
	      const char *opt_name, const char *extension,
	      const char *index_file_name,
	      enum_log_type type, bool read_append,
	      bool no_auto_events)
{
  char tmp[FN_REFLEN];
  if (!opt_name || !opt_name[0])
  {
    /*
      TODO: The following should be using fn_format();  We just need to
      first change fn_format() to cut the file name if it's too long.
    */
    strmake(tmp,hostname,FN_REFLEN-5);
    strmov(fn_ext(tmp),extension);
    opt_name=tmp;
  }
  // get rid of extension if the log is binary to avoid problems
  if (type == LOG_BIN)
  {
    char *p = fn_ext(opt_name);
    if (p)
    {
      uint length=(uint) (p-opt_name);
      strmake(tmp,opt_name,min(length,FN_REFLEN));
      opt_name=tmp;
    }
  }
  return log->open(opt_name, type, 0, index_file_name,
		   (read_append) ? SEQ_READ_APPEND : WRITE_CACHE,
		   no_auto_events);
}


static int init_common_variables(const char *conf_file_name, int argc,
				 char **argv, const char **groups)
{
  my_umask=0660;		// Default umask for new files
  my_umask_dir=0700;		// Default umask for new directories
  umask(((~my_umask) & 0666));
  tzset();			// Set tzname

  max_system_variables.pseudo_thread_id= (ulong)~0;
  start_time=time((time_t*) 0);
  mysql_init_variables();

#ifdef OS2
  {
    // fix timezone for daylight saving
    struct tm *ts = localtime(&start_time);
    if (ts->tm_isdst > 0)
      _timezone -= 3600;
  }
#endif
#ifdef HAVE_TZNAME
  {
    struct tm tm_tmp;
    localtime_r(&start_time,&tm_tmp);
    strmov(time_zone,tzname[tm_tmp.tm_isdst != 0 ? 1 : 0]);
  }
#endif

  if (gethostname(glob_hostname,sizeof(glob_hostname)-4) < 0)
    strmov(glob_hostname,"mysql");
  strmake(pidfile_name, glob_hostname, sizeof(pidfile_name)-5);
  strmov(fn_ext(pidfile_name),".pid");		// Add proper extension

#ifndef DBUG_OFF
  strxmov(strend(server_version),MYSQL_SERVER_SUFFIX,"-debug",NullS);
#else
  strmov(strend(server_version),MYSQL_SERVER_SUFFIX);
#endif

  load_defaults(conf_file_name, groups, &argc, &argv);
  defaults_argv=argv;
  get_options(argc,argv);
  if (init_thread_environment())
    return 1;
  if (opt_log || opt_update_log || opt_slow_log || opt_bin_log)
    strcat(server_version,"-log");
  DBUG_PRINT("info",("%s  Ver %s for %s on %s\n",my_progname,
		     server_version, SYSTEM_TYPE,MACHINE_TYPE));

#if defined( SET_RLIMIT_NOFILE) || defined( OS2)
  /* connections and databases needs lots of files */
  {
    uint wanted_files=10+(uint) max(max_connections*5,
				    max_connections+table_cache_size*2);
    set_if_bigger(wanted_files, open_files_limit);
    // Note that some system returns 0 if we succeed here:
    uint files=set_maximum_open_files(wanted_files);
    if (files && files < wanted_files && ! open_files_limit)
    {
      max_connections=	(ulong) min((files-10),max_connections);
      table_cache_size= (ulong) max((files-10-max_connections)/2,64);
      DBUG_PRINT("warning",
		 ("Changed limits: max_connections: %ld  table_cache: %ld",
		  max_connections,table_cache_size));
      sql_print_error("Warning: Changed limits: max_connections: %ld  table_cache: %ld",max_connections,table_cache_size);
    }
  }
#endif
  unireg_init(opt_specialflag); /* Set up extern variabels */
  init_errmessage();		/* Read error messages from file */
  init_client_errs();
  lex_init();
  item_init();
  set_var_init();
  mysys_uses_curses=0;
#ifdef USE_REGEX
  regex_init(&my_charset_latin1);
#endif
  if (!(default_charset_info= get_charset_by_csname(default_character_set_name,
						    MY_CS_PRIMARY,
						    MYF(MY_WME))))
    return 1;
  if (default_collation_name)
  {
    CHARSET_INFO *default_collation;
    default_collation= get_charset_by_name(default_collation_name, MYF(0));
    if (!default_collation || !my_charset_same(default_charset_info,
					       default_collation))
    {
      sql_print_error(ER(ER_COLLATION_CHARSET_MISMATCH),
		      default_collation_name,
		      default_charset_info->csname);
      return 1;
    }
    default_charset_info= default_collation;
  }
  global_system_variables.character_set_server= default_charset_info;
  global_system_variables.character_set_database= default_charset_info;
  global_system_variables.character_set_results= default_charset_info;
  global_system_variables.character_set_client= default_charset_info;
  global_system_variables.collation_connection= default_charset_info;

  if (use_temp_pool && bitmap_init(&temp_pool,1024,1))
    return 1;
  return 0;
}


static int init_thread_environment()
{
  (void) pthread_mutex_init(&LOCK_mysql_create_db,MY_MUTEX_INIT_SLOW);
  (void) pthread_mutex_init(&LOCK_Acl,MY_MUTEX_INIT_SLOW);
  (void) pthread_mutex_init(&LOCK_open,MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_thread_count,MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_mapped_file,MY_MUTEX_INIT_SLOW);
  (void) pthread_mutex_init(&LOCK_status,MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_error_log,MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_delayed_insert,MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_delayed_status,MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_delayed_create,MY_MUTEX_INIT_SLOW);
  (void) pthread_mutex_init(&LOCK_manager,MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_crypt,MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_bytes_sent,MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_bytes_received,MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_user_conn, MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_active_mi, MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_global_system_variables, MY_MUTEX_INIT_FAST);
  (void) my_rwlock_init(&LOCK_grant, NULL);
  (void) pthread_cond_init(&COND_thread_count,NULL);
  (void) pthread_cond_init(&COND_refresh,NULL);
  (void) pthread_cond_init(&COND_thread_cache,NULL);
  (void) pthread_cond_init(&COND_flush_thread_cache,NULL);
  (void) pthread_cond_init(&COND_manager,NULL);
#ifdef HAVE_REPLICATION
  (void) pthread_mutex_init(&LOCK_rpl_status, MY_MUTEX_INIT_FAST);
  (void) pthread_cond_init(&COND_rpl_status, NULL);
#endif
  /* 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);
  if (!(opt_specialflag & SPECIAL_NO_PRIOR))
    my_pthread_attr_setprio(&connection_attrib,WAIT_PRIOR);

  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;
}


static void init_ssl()
{
#ifdef HAVE_OPENSSL
  if (opt_use_ssl)
  {
    /* 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,
					  opt_ssl_cipher);
    DBUG_PRINT("info",("ssl_acceptor_fd: %lx", (long) ssl_acceptor_fd));
    if (!ssl_acceptor_fd)
      opt_use_ssl = 0;
  }
  if (des_key_file)
    load_des_key_file(des_key_file);
#endif /* HAVE_OPENSSL */
}


static int init_server_components()
{
  table_cache_init();
  hostname_cache_init();
  query_cache_result_size_limit(query_cache_limit);
  query_cache_set_min_res_unit(query_cache_min_res_unit);
  query_cache_resize(query_cache_size);
  randominit(&sql_rand,(ulong) start_time,(ulong) start_time/2);
  reset_floating_point_exceptions();
  init_thr_lock();
#ifdef HAVE_REPLICATION
  init_slave_list();
#endif
  /* Setup log files */
  if (opt_log)
    open_log(&mysql_log, glob_hostname, opt_logname, ".log", NullS,
	     LOG_NORMAL);
  if (opt_update_log)
  {
    open_log(&mysql_update_log, glob_hostname, opt_update_logname, "",
	     NullS, LOG_NEW);
    using_update_log=1;
  }
  if (opt_slow_log)
    open_log(&mysql_slow_log, glob_hostname, opt_slow_logname, "-slow.log",
	     NullS, LOG_NORMAL);

  if (opt_bin_log)
  {
    open_log(&mysql_bin_log, glob_hostname, opt_bin_logname, "-bin",
	     opt_binlog_index_name,LOG_BIN);
    using_update_log=1;
#ifdef HAVE_REPLICATION
    if (expire_logs_days)
    {
      long purge_time= time(0) - expire_logs_days*24*60*60;
      if (purge_time >= 0)
	mysql_bin_log.purge_logs_before_date(purge_time);
    }
#endif
  }

  if (opt_error_log)
  {
    if (!log_error_file_ptr[0])
      fn_format(log_error_file, glob_hostname, mysql_data_home, ".err", 0);
    else
      fn_format(log_error_file, log_error_file_ptr, mysql_data_home, ".err",
		MY_UNPACK_FILENAME | MY_SAFE_PATH);
    if (!log_error_file[0])
      opt_error_log= 1;				// Too long file name
    else
    {
      if (freopen(log_error_file, "a+", stdout))
	freopen(log_error_file, "a+", stderr);
    }
  }

  if (ha_init())
  {
    sql_print_error("Can't init databases");
    unireg_abort(1);
  }
  if (opt_myisam_log)
    (void) mi_log(1);
  ha_key_cache();

#if defined(HAVE_MLOCKALL) && defined(MCL_CURRENT)
  if (locked_in_memory && !geteuid())
  {
    if (mlockall(MCL_CURRENT))
    {
      sql_print_error("Warning: Failed to lock memory. Errno: %d\n",errno);
    }
    else
      locked_in_memory=1;
  }
#else
  locked_in_memory=0;
#endif

  ft_init_stopwords();

  init_max_user_conn();
  init_update_queries();
  return 0;
}


static void create_maintenance_thread()
{
  if (
#ifdef HAVE_BERKELEY_DB
      !berkeley_skip ||
#endif
      (flush_time && flush_time != ~(ulong) 0L))
  {
    pthread_t hThread;
    if (pthread_create(&hThread,&connection_attrib,handle_manager,0))
      sql_print_error("Warning: Can't create thread to manage maintenance");
  }
}


static void create_shutdown_thread()
{
#if !defined(EMBEDDED_LIBRARY)
#ifdef __WIN__
  hEventShutdown=CreateEvent(0, FALSE, FALSE, shutdown_event_name);
  pthread_t hThread;
  if (pthread_create(&hThread,&connection_attrib,handle_shutdown,0))
    sql_print_error("Warning: Can't create thread to handle shutdown requests");

  // On "Stop Service" we have to do regular shutdown
  Service.SetShutdownEvent(hEventShutdown);
#endif
#ifdef OS2
  pthread_cond_init(&eventShutdown, NULL);
  pthread_t hThread;
  if (pthread_create(&hThread,&connection_attrib,handle_shutdown,0))
    sql_print_error("Warning: Can't create thread to handle shutdown requests");
#endif
#endif // EMBEDDED_LIBRARY 
}


#if defined(__NT__) || defined(HAVE_SMEM)
static void handle_connections_methods()
{
  pthread_t hThread;
  DBUG_ENTER("handle_connections_methods");
#ifdef __NT__
  if (hPipe == INVALID_HANDLE_VALUE &&
      (!have_tcpip || opt_disable_networking) &&
      !opt_enable_shared_memory)
  {
    sql_print_error("TCP/IP,--shared-memory or --named-pipe should be configured on NT OS");
    unireg_abort(1);				// Will not return
  }
#endif

  pthread_mutex_lock(&LOCK_thread_count);
  (void) pthread_cond_init(&COND_handler_count,NULL);
  handler_count=0;
#ifdef __NT__
  if (hPipe != INVALID_HANDLE_VALUE)
  {
    handler_count++;
    if (pthread_create(&hThread,&connection_attrib,
		       handle_connections_namedpipes, 0))
    {
      sql_print_error("Warning: Can't create thread to handle named pipes");
      handler_count--;
    }
  }
#endif /* __NT__ */
  if (have_tcpip && !opt_disable_networking)
  {
    handler_count++;
    if (pthread_create(&hThread,&connection_attrib,
		       handle_connections_sockets, 0))
    {
      sql_print_error("Warning: Can't create thread to handle TCP/IP");
      handler_count--;
    }
  }
#ifdef HAVE_SMEM
  if (opt_enable_shared_memory)
  {
    handler_count++;
    if (pthread_create(&hThread,&connection_attrib,
		       handle_connections_shared_memory, 0))
    {
      sql_print_error("Warning: Can't create thread to handle shared memory");
      handler_count--;
    }
  }
#endif 

  while (handler_count > 0)
    pthread_cond_wait(&COND_handler_count,&LOCK_thread_count);
  pthread_mutex_unlock(&LOCK_thread_count);
  DBUG_VOID_RETURN;
}

void decrement_handler_count()
{
  pthread_mutex_lock(&LOCK_thread_count);
  handler_count--;
  pthread_mutex_unlock(&LOCK_thread_count);
  pthread_cond_signal(&COND_handler_count);
}
#else
#define decrement_handler_count()
#endif /* defined(__NT__) || defined(HAVE_SMEM) */


#ifndef EMBEDDED_LIBRARY
#ifdef __WIN__
int win_main(int argc, char **argv)
#else
int main(int argc, char **argv)
#endif
{
  DEBUGGER_OFF;

  MY_INIT(argv[0]);		// init my_sys library & pthreads

#ifdef _CUSTOMSTARTUPCONFIG_
  if (_cust_check_startup())
  {
    / * _cust_check_startup will report startup failure error * /
    exit( 1 );
  }
#endif

  if (init_common_variables(MYSQL_CONFIG_NAME,
			    argc, argv, load_default_groups))
    unireg_abort(1);				// Will do exit

  init_signals();
  if (!(opt_specialflag & SPECIAL_NO_PRIOR))
    my_pthread_setprio(pthread_self(),CONNECT_PRIOR);
  pthread_attr_setstacksize(&connection_attrib,thread_stack);
#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);
    /* We must check if stack_size = 0 as Solaris 2.9 can return 0 here */
    if (stack_size && stack_size < thread_stack)
    {
      if (global_system_variables.log_warnings)
	sql_print_error("Warning: Asked for %ld thread stack, but got %ld",
			thread_stack, stack_size);
      thread_stack= stack_size;
    }
  }
#endif
  (void) thr_setconcurrency(concurrency);	// 10 by default

  select_thread=pthread_self();
  select_thread_in_use=1;
  init_ssl();

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

  /*
    We have enough space for fiddling with the argv, continue
  */
  check_data_home(mysql_real_data_home);
  if (my_setwd(mysql_real_data_home,MYF(MY_WME)))
  {
    unireg_abort(1);				/* purecov: inspected */
  }
  mysql_data_home= mysql_data_home_buff;
  mysql_data_home[0]=FN_CURLIB;		// all paths are relative from here
  mysql_data_home[1]=0;
  server_init();

  if (opt_bin_log && !server_id)
  {
    server_id= !master_host ? 1 : 2;
#ifdef EXTRA_DEBUG
    switch (server_id) {
    case 1:
      sql_print_error("\
Warning: You have enabled the binary log, but you haven't set server-id:\n\
Updates will be logged to the binary log, but connections to slaves will\n\
not be accepted.");
      break;
    case 2:
      sql_print_error("\
Warning: You should set server-id to a non-0 value if master_host is set.\n\
The server will not act as a slave.");
      break;
    }
#endif
  }

  if (init_server_components())
    exit(1);

#ifdef __WIN__
#define MYSQL_ERR_FILE "mysql.err"
  if (!opt_console)
  {
    freopen(MYSQL_ERR_FILE,"a+",stdout);
    freopen(MYSQL_ERR_FILE,"a+",stderr);
    FreeConsole();				// Remove window
  }
#endif

  /*
    init signals & alarm
    After this we can't quit by a simple unireg_abort
  */
  error_handler_hook = my_message_sql;
  start_signal_handler();				// Creates pidfile
  if (acl_init((THD *)0, opt_noacl))
  {
    abort_loop=1;
    select_thread_in_use=0;
#ifndef __NETWARE__
    (void) pthread_kill(signal_thread, MYSQL_KILL_SIGNAL);
#endif /* __NETWARE__ */
#ifndef __WIN__
    if (!opt_bootstrap)
      (void) my_delete(pidfile_name,MYF(MY_WME));	// Not needed anymore
#endif
    if (unix_sock != INVALID_SOCKET)
      unlink(mysqld_unix_port);
    exit(1);
  }
  if (!opt_noacl)
    (void) grant_init((THD *)0);

#ifdef HAVE_DLOPEN
  if (!opt_noacl)
    udf_init();
#endif
  /* init_slave() must be called after the thread keys are created */
  init_slave();

  if (opt_bootstrap)
  {
    int error=bootstrap(stdin);
    end_thr_alarm(1);				// Don't allow alarms
    unireg_abort(error ? 1 : 0);
  }
  if (opt_init_file)
  {
    if (read_init_file(opt_init_file))
    {
      end_thr_alarm(1);				// Don't allow alarms
      unireg_abort(1);
    }
  }

  create_shutdown_thread();
  create_maintenance_thread();

  printf(ER(ER_READY),my_progname,server_version,
	 ((unix_sock == INVALID_SOCKET) ? (char*) "" : mysqld_unix_port),
	 mysqld_port);
  fflush(stdout);

#if defined(__NT__) || defined(HAVE_SMEM)
  handle_connections_methods();
#else
  handle_connections_sockets(0);
#endif /* __NT__ */

  /* (void) pthread_attr_destroy(&connection_attrib); */

  DBUG_PRINT("quit",("Exiting main thread"));

#ifndef __WIN__
#ifdef EXTRA_DEBUG2
  sql_print_error("Before Lock_thread_count");
#endif
  (void) pthread_mutex_lock(&LOCK_thread_count);
  DBUG_PRINT("quit", ("Got thread_count mutex"));
  select_thread_in_use=0;			// For close_connections
  (void) pthread_mutex_unlock(&LOCK_thread_count);
  (void) pthread_cond_broadcast(&COND_thread_count);
#ifdef EXTRA_DEBUG2
  sql_print_error("After lock_thread_count");
#endif
#endif /* __WIN__ */

  /* Wait until cleanup is done */
  (void) pthread_mutex_lock(&LOCK_thread_count);
  while (!ready_to_exit)
    pthread_cond_wait(&COND_thread_count,&LOCK_thread_count);
  (void) pthread_mutex_unlock(&LOCK_thread_count);

#if defined(__WIN__) && !defined(EMBEDDED_LIBRARY)
  if (Service.IsNT() && start_mode)
    Service.Stop();
  else
  {
    Service.SetShutdownEvent(0);
    if (hEventShutdown)
      CloseHandle(hEventShutdown);
  }
#endif
#ifndef __NETWARE__
  {
    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++)
    {
      if (pthread_kill(signal_thread, MYSQL_KILL_SIGNAL))
	break;
      my_sleep(100);				// Give it time to die
    }
  }
#endif
  clean_up_mutexes();
  my_end(opt_endinfo ? MY_CHECK_ERROR | MY_GIVE_INFO : 0);
  exit(0);
  return(0);					/* purecov: deadcode */
}

#endif /* EMBEDDED_LIBRARY */


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

#if defined(__WIN__) && !defined(EMBEDDED_LIBRARY)
int mysql_service(void *p)
{
  if (use_opt_args)
    win_main(opt_argc, opt_argv);
  else
    win_main(Service.my_argc, Service.my_argv);
  return 0;
}

/*
  Handle basic handling of services, like installation and removal

  SYNOPSIS
    default_service_handling()
    argv		Pointer to argument list
    servicename		Internal name of service
    displayname		Display name of service (in taskbar ?)
    file_path		Path to this program

  RETURN VALUES
    0		option handled
    1		Could not handle option
 */

bool default_service_handling(char **argv,
			      const char *servicename,
			      const char *displayname,
			      const char *file_path)
{
  if (Service.got_service_option(argv, "install"))
  {
    Service.Install(1, servicename, displayname, file_path);
    return 0;
  }
  if (Service.got_service_option(argv, "install-manual"))
  {
    Service.Install(0, servicename, displayname, file_path);
    return 0;
  }
  if (Service.got_service_option(argv, "remove"))
  {
    Service.Remove(servicename);
    return 0;
  }
  return 1;
}


int main(int argc, char **argv)
{

  /* 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
  */ 
  int2str((int) GetCurrentProcessId(),strmov(shutdown_event_name,
          "MySQLShutdown"), 10);
  
  if (Service.GetOS())	/* true NT family */
  {
    char file_path[FN_REFLEN];
    my_path(file_path, argv[0], "");		      /* Find name in path */
    fn_format(file_path,argv[0],file_path,"",1+4+16); /* Force full path */

    if (argc == 2)
    {
      if (!default_service_handling(argv,MYSQL_SERVICENAME, MYSQL_SERVICENAME,
				   file_path))
	return 0;
      if (Service.IsService(argv[1]))
      {
        /* start an optional service */
        load_default_groups[0]= argv[1];
        start_mode= 1;
        Service.Init(argv[1], mysql_service);
        return 0;
      }
    }
    else if (argc == 3) /* install or remove any optional service */
    {
      /* Add service name after filename */
      uint length=strlen(file_path);
      *strxnmov(file_path + length, sizeof(file_path)-length-2, " ",
		argv[2], NullS)= '\0';

      if (!default_service_handling(argv, argv[2], argv[2], file_path))
	return 0;
      if (Service.IsService(argv[2]))
      {
	/*
	  mysqld was started as
	  mysqld --defaults-file=my_path\my.ini service-name
	*/
	use_opt_args=1;
	opt_argc= 2;				// Skip service-name
	opt_argv=argv;
	start_mode= 1;
	Service.Init(argv[2], mysql_service);
	return 0;
      }
    }
    else if (argc == 4)
    {
      /*
	Install an optional service with optional config file
	mysqld --install-manual mysqldopt --defaults-file=c:\miguel\my.ini
      */
      uint length=strlen(file_path);
      *strxnmov(file_path + length, sizeof(file_path)-length-2, " ",
		argv[3], " ", argv[2], NullS)= '\0';
      if (!default_service_handling(argv, argv[2], argv[2], file_path))
	return 0;
    }
    else if (argc == 1 && Service.IsService(MYSQL_SERVICENAME))
    {
      /* start the default service */
      start_mode= 1;
      Service.Init(MYSQL_SERVICENAME, mysql_service);
      return 0;
    }
  }
  /* Start as standalone server */
  Service.my_argc=argc;
  Service.my_argv=argv;
  mysql_service(NULL);
  return 0;
}
#endif


/*
  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.
*/

static int bootstrap(FILE *file)
{
  int error= 0;
  DBUG_ENTER("bootstrap");
#ifndef EMBEDDED_LIBRARY			// TODO:  Enable this

  THD *thd= new THD;
  thd->bootstrap=1;
  thd->client_capabilities=0;
  my_net_init(&thd->net,(st_vio*) 0);
  thd->max_client_packet_length= thd->net.max_packet;
  thd->master_access= ~0;
  thd->thread_id=thread_id++;
  thread_count++;

  bootstrap_file=file;
  if (pthread_create(&thd->real_id,&connection_attrib,handle_bootstrap,
		     (void*) thd))
  {
    sql_print_error("Warning: Can't create thread to handle bootstrap");
    DBUG_RETURN(-1);
  }
  /* Wait for thread to die */
  (void) pthread_mutex_lock(&LOCK_thread_count);
  while (thread_count)
  {
    (void) pthread_cond_wait(&COND_thread_count,&LOCK_thread_count);
    DBUG_PRINT("quit",("One thread died (count=%u)",thread_count));
  }
  (void) pthread_mutex_unlock(&LOCK_thread_count);
  error= thd->is_fatal_error;
  net_end(&thd->net);
  thd->cleanup();
  delete thd;
#endif /* EMBEDDED_LIBRARY */
  DBUG_RETURN(error);
}


static bool read_init_file(char *file_name)
{
  FILE *file;
  DBUG_ENTER("read_init_file");
  DBUG_PRINT("enter",("name: %s",file_name));
  if (!(file=my_fopen(file_name,O_RDONLY,MYF(MY_WME))))
    return(1);
  bootstrap(file);				/* Ignore errors from this */
  (void) my_fclose(file,MYF(MY_WME));
  return 0;
}


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

  NET *net=&thd->net;				// For easy ref
  net->read_timeout = (uint) connect_timeout;
  if (protocol_version > 9)
    net->return_errno=1;

  /* don't allow too many connections */
  if (thread_count - delayed_insert_threads >= max_connections+1 || abort_loop)
  {
    DBUG_PRINT("error",("Too many connections"));
    close_connection(thd, ER_CON_COUNT_ERROR, 1);
    delete thd;
    DBUG_VOID_RETURN;
  }
  pthread_mutex_lock(&LOCK_thread_count);
  if (thread_count-delayed_insert_threads > max_used_connections)
    max_used_connections=thread_count-delayed_insert_threads;
  thd->thread_id=thread_id++;
  for (uint i=0; i < 8 ; i++)			// Generate password teststring
    thd->scramble[i]= (char) (my_rnd(&sql_rand)*94+33);
  thd->scramble[8]=0;
  // Back it up as old clients may need it
  memcpy(thd->old_scramble,thd->scramble,9);


  thd->real_id=pthread_self();			// Keep purify happy

  /* Start a new thread to handle connection */
#ifdef ONE_THREAD
  if (test_flags & TEST_NO_THREADS)		// For debugging under Linux
  {
    thread_cache_size=0;			// Safety
    thread_count++;
    threads.append(thd);
    thd->real_id=pthread_self();
    (void) pthread_mutex_unlock(&LOCK_thread_count);
    handle_one_connection((void*) thd);
  }
  else
#endif
  {
    if (cached_thread_count > wake_thread)
    {
      start_cached_thread(thd);
    }
    else
    {
      int error;
      thread_count++;
      thread_created++;
      threads.append(thd);
      DBUG_PRINT("info",(("creating thread %d"), thd->thread_id));
      thd->connect_time = time(NULL);
      if ((error=pthread_create(&thd->real_id,&connection_attrib,
				handle_one_connection,
				(void*) thd)))
      {
	DBUG_PRINT("error",
		   ("Can't create thread to handle request (error %d)",
		    error));
	thread_count--;
	thd->killed=1;				// Safety
	(void) pthread_mutex_unlock(&LOCK_thread_count);
	net_printf(thd,ER_CANT_CREATE_THREAD,error);
	(void) pthread_mutex_lock(&LOCK_thread_count);
	close_connection(thd,0,0);
	delete thd;
	(void) pthread_mutex_unlock(&LOCK_thread_count);
	DBUG_VOID_RETURN;
      }
    }
    (void) pthread_mutex_unlock(&LOCK_thread_count);

  }
  DBUG_PRINT("info",("Thread created"));
  DBUG_VOID_RETURN;
}
#endif /* EMBEDDED_LIBRARY */


#ifdef SIGNALS_DONT_BREAK_READ
inline void kill_broken_server()
{
  /* hack to get around signals ignored in syscalls for problem OS's */
  if (
#if !defined(__NETWARE__)
      unix_sock == INVALID_SOCKET ||
#endif
      (!opt_disable_networking && ip_sock == INVALID_SOCKET))
  {
    select_thread_in_use = 0;
#ifdef __NETWARE__
    kill_server(MYSQL_KILL_SIGNAL); /* never returns */
#else
    kill_server((void*)MYSQL_KILL_SIGNAL); /* never returns */
#endif /* __NETWARE__ */
  }
}
#define MAYBE_BROKEN_SYSCALL kill_broken_server();
#else
#define MAYBE_BROKEN_SYSCALL
#endif

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

#ifndef EMBEDDED_LIBRARY
extern "C" pthread_handler_decl(handle_connections_sockets,
				arg __attribute__((unused)))
{
  my_socket sock,new_sock;
  uint error_count=0;
  uint max_used_connection= (uint) (max(ip_sock,unix_sock)+1);
  fd_set readFDs,clientFDs;
  THD *thd;
  struct sockaddr_in cAddr;
  int ip_flags=0,socket_flags=0,flags;
  st_vio *vio_tmp;
  DBUG_ENTER("handle_connections_sockets");

  LINT_INIT(new_sock);

  (void) my_pthread_getprio(pthread_self());		// For debugging

  FD_ZERO(&clientFDs);
  if (ip_sock != INVALID_SOCKET)
  {
    FD_SET(ip_sock,&clientFDs);
#ifdef HAVE_FCNTL
    ip_flags = fcntl(ip_sock, F_GETFL, 0);
#endif
  }
#ifdef HAVE_SYS_UN_H
  FD_SET(unix_sock,&clientFDs);
#ifdef HAVE_FCNTL
  socket_flags=fcntl(unix_sock, F_GETFL, 0);
#endif
#endif

  DBUG_PRINT("general",("Waiting for connections."));
  MAYBE_BROKEN_SYSCALL;
  while (!abort_loop)
  {
    readFDs=clientFDs;
#ifdef HPUX10
    if (select(max_used_connection,(int*) &readFDs,0,0,0) < 0)
      continue;
#else
    if (select((int) max_used_connection,&readFDs,0,0,0) < 0)
    {
      if (socket_errno != SOCKET_EINTR)
      {
	if (!select_errors++ && !abort_loop)	/* purecov: inspected */
	  sql_print_error("mysqld: Got error %d from select",socket_errno); /* purecov: inspected */
      }
      MAYBE_BROKEN_SYSCALL
      continue;
    }
#endif	/* HPUX10 */
    if (abort_loop)
    {
      MAYBE_BROKEN_SYSCALL;
      break;
    }

    /* Is this a new connection request ? */
#ifdef HAVE_SYS_UN_H
    if (FD_ISSET(unix_sock,&readFDs))
    {
      sock = unix_sock;
      flags= socket_flags;
    }
    else
#endif
    {
      sock = ip_sock;
      flags= ip_flags;
    }

#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++)
    {
      size_socket length=sizeof(struct sockaddr_in);
      new_sock = accept(sock, my_reinterpret_cast(struct sockaddr *) (&cAddr),
			&length);
#ifdef __NETWARE__ 
      // TODO: temporary fix, waiting for TCP/IP fix - DEFECT000303149
      if ((new_sock == INVALID_SOCKET) && (socket_errno == EINVAL))
      {
        kill_server(SIGTERM);
      }
#endif
      if (new_sock != INVALID_SOCKET ||
	  (socket_errno != SOCKET_EINTR && socket_errno != SOCKET_EAGAIN))
	break;
      MAYBE_BROKEN_SYSCALL;
#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
    if (new_sock == INVALID_SOCKET)
    {
      if ((error_count++ & 255) == 0)		// This can happen often
	sql_perror("Error in accept");
      MAYBE_BROKEN_SYSCALL;
      if (socket_errno == SOCKET_ENFILE || socket_errno == SOCKET_EMFILE)
	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);
	my_fromhost(&req);
	if (!my_hosts_access(&req))
	{
	  /*
	    This may be stupid but refuse() includes an exit(0)
	    which we surely don't want...
	    clean_exit() - same stupid thing ...
	  */
	  syslog(deny_severity, "refused connect from %s",
		 my_eval_client(&req));

	  /*
	    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...
	  */
	  if (req.sink)
	    ((void (*)(int))req.sink)(req.fd);

	  (void) shutdown(new_sock,2);
	  (void) closesocket(new_sock);
	  continue;
	}
      }
    }
#endif /* HAVE_LIBWRAP */

    {
      size_socket dummyLen;
      struct sockaddr dummy;
      dummyLen = sizeof(struct sockaddr);
      if (getsockname(new_sock,&dummy, &dummyLen) < 0)
      {
	sql_perror("Error on new connection socket");
	(void) shutdown(new_sock,2);
	(void) closesocket(new_sock);
	continue;
      }
    }

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

    if (!(thd= new THD))
    {
      (void) shutdown(new_sock,2);
      VOID(closesocket(new_sock));
      continue;
    }
    if (!(vio_tmp=vio_new(new_sock,
			  sock == unix_sock ? VIO_TYPE_SOCKET :
			  VIO_TYPE_TCPIP,
			  sock == unix_sock)) ||
	my_net_init(&thd->net,vio_tmp))
    {
      if (vio_tmp)
	vio_delete(vio_tmp);
      else
      {
	(void) shutdown(new_sock,2);
	(void) closesocket(new_sock);
      }
      delete thd;
      continue;
    }
    if (sock == unix_sock)
      thd->host=(char*) localhost;
    create_new_thread(thd);
  }

#ifdef OS2
  // kill server must be invoked from thread 1!
  kill_server(MYSQL_KILL_SIGNAL);
#endif
  decrement_handler_count();
  DBUG_RETURN(0);
}


#ifdef __NT__
extern "C" pthread_handler_decl(handle_connections_namedpipes,arg)
{
  HANDLE hConnectedPipe;
  BOOL fConnected;
  THD *thd;
  my_thread_init();
  DBUG_ENTER("handle_connections_namedpipes");
  (void) my_pthread_getprio(pthread_self());		// For debugging

  DBUG_PRINT("general",("Waiting for named pipe connections."));
  while (!abort_loop)
  {
    /* wait for named pipe connection */
    fConnected = ConnectNamedPipe( hPipe, NULL );
    if (abort_loop)
      break;
    if (!fConnected)
      fConnected = GetLastError() == ERROR_PIPE_CONNECTED;
    if (!fConnected)
    {
      CloseHandle( hPipe );
      if ((hPipe = CreateNamedPipe(szPipeName,
				   PIPE_ACCESS_DUPLEX,
				   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 )
      {
	sql_perror("Can't create new named pipe!");
	break;					// Abort
      }
    }
    hConnectedPipe = hPipe;
    /* create new pipe for new connection */
    if ((hPipe = CreateNamedPipe(szPipeName,
				 PIPE_ACCESS_DUPLEX,
				 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)
    {
      sql_perror("Can't create new named pipe!");
      hPipe=hConnectedPipe;
      continue;					// We have to try again
    }

    if (!(thd = new THD))
    {
      DisconnectNamedPipe( hConnectedPipe );
      CloseHandle( hConnectedPipe );
      continue;
    }
    if (!(thd->net.vio = vio_new_win32pipe(hConnectedPipe)) ||
	my_net_init(&thd->net, thd->net.vio))
    {
      close_connection(thd, ER_OUT_OF_RESOURCES, 1);
      delete thd;
      continue;
    }
    /* host name is unknown */
    thd->host = my_strdup(localhost,MYF(0)); /* Host is unknown */
    create_new_thread(thd);
  }

  decrement_handler_count();
  DBUG_RETURN(0);
}
#endif /* __NT__ */


/*
  Thread of shared memory's service

  SYNOPSIS
    pthread_handler_decl()
    handle_connections_shared_memory Thread handle
    arg                              Arguments of thread
*/

#ifdef HAVE_SMEM
pthread_handler_decl(handle_connections_shared_memory,arg)
{
/*
  event_connect_request is event object for start connection actions
  event_connect_answer is event object for confirm, that server put data
  handle_connect_file_map is file-mapping object, use for create shared memory
  handle_connect_map is pointer on shared memory
  handle_map is pointer on shared memory for client
  event_server_wrote,
  event_server_read,
  event_client_wrote,
  event_client_read are events for transfer data between server and client
  handle_file_map is file-mapping object, use for create shared memory
*/
  HANDLE handle_connect_file_map = NULL;
  char  *handle_connect_map = NULL;
  HANDLE event_connect_request = NULL;
  HANDLE event_connect_answer = NULL;
  ulong smem_buffer_length = shared_memory_buffer_length + 4;
  ulong connect_number = 1;
  my_bool error_allow;
  THD *thd;
  char tmp[63];
  char *suffix_pos;
  char connect_number_char[22], *p;

  my_thread_init();
  DBUG_ENTER("handle_connections_shared_memorys");
  DBUG_PRINT("general",("Waiting for allocated shared memory."));


  /*
    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)
  */
  suffix_pos = strxmov(tmp,shared_memory_base_name,"_",NullS);
  strmov(suffix_pos, "CONNECT_REQUEST");
  if ((event_connect_request = CreateEvent(NULL,FALSE,FALSE,tmp)) == 0)
  {
    sql_perror("Can't create shared memory service ! The request event don't create.");
    goto error;
  }
  strmov(suffix_pos, "CONNECT_ANSWER");
  if ((event_connect_answer = CreateEvent(NULL,FALSE,FALSE,tmp)) == 0)
  {
    sql_perror("Can't create shared memory service ! The answer event don't create.");
    goto error;
  }
  strmov(suffix_pos, "CONNECT_DATA");
  if ((handle_connect_file_map = CreateFileMapping(INVALID_HANDLE_VALUE,NULL,PAGE_READWRITE,
                                 0,sizeof(connect_number),tmp)) == 0)
  {
    sql_perror("Can't create shared memory service ! File mapping don't create.");
    goto error;
  }
  if ((handle_connect_map = (char *)MapViewOfFile(handle_connect_file_map,FILE_MAP_WRITE,0,0,
                            sizeof(DWORD))) == 0)
  {
    sql_perror("Can't create shared memory service ! Map of memory don't create.");
    goto error;
  }


  while (!abort_loop)
  {
/*
 Wait a request from client
*/
    WaitForSingleObject(event_connect_request,INFINITE);
    error_allow = FALSE;

    HANDLE handle_client_file_map = NULL;
    char  *handle_client_map = NULL;
    HANDLE event_client_wrote = NULL;
    HANDLE event_client_read = NULL;
    HANDLE event_server_wrote = NULL;
    HANDLE event_server_read = NULL;

    p = int2str(connect_number, connect_number_char, 10);
/*
  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 number of connection between server and client
*/
    suffix_pos = strxmov(tmp,shared_memory_base_name,"_",connect_number_char,"_",NullS);
    strmov(suffix_pos, "DATA");
    if ((handle_client_file_map = CreateFileMapping(INVALID_HANDLE_VALUE,NULL,
                                  PAGE_READWRITE,0,smem_buffer_length,tmp)) == 0)
    {
      sql_perror("Can't create connection with client in shared memory service ! File mapping don't create.");
      error_allow = TRUE;
      goto errorconn;
    }
    if ((handle_client_map = (char*)MapViewOfFile(handle_client_file_map,FILE_MAP_WRITE,0,0,smem_buffer_length)) == 0)
    {
      sql_perror("Can't create connection with client in shared memory service ! Map of memory don't create.");
      error_allow = TRUE;
      goto errorconn;
    }

    strmov(suffix_pos, "CLIENT_WROTE");
    if ((event_client_wrote = CreateEvent(NULL,FALSE,FALSE,tmp)) == 0)
    {
      sql_perror("Can't create connection with client in shared memory service ! CW event don't create.");
      error_allow = TRUE;
      goto errorconn;
    }

    strmov(suffix_pos, "CLIENT_READ");
    if ((event_client_read = CreateEvent(NULL,FALSE,FALSE,tmp)) == 0)
    {
      sql_perror("Can't create connection with client in shared memory service ! CR event don't create.");
      error_allow = TRUE;
      goto errorconn;
    }

    strmov(suffix_pos, "SERVER_READ");
    if ((event_server_read = CreateEvent(NULL,FALSE,FALSE,tmp)) == 0)
    {
      sql_perror("Can't create connection with client in shared memory service ! SR event don't create.");
      error_allow = TRUE;
      goto errorconn;
    }

    strmov(suffix_pos, "SERVER_WROTE");
    if ((event_server_wrote = CreateEvent(NULL,FALSE,FALSE,tmp)) == 0)
    {
      sql_perror("Can't create connection with client in shared memory service ! SW event don't create.");
      error_allow = TRUE;
      goto errorconn;
    }

    if (abort_loop) break;
    if ( !(thd = new THD))
    {
      error_allow = TRUE;
      goto errorconn;
    }

/*
Send number of connection to client
*/
    int4store(handle_connect_map, connect_number);

/*
  Send number of connection to client
*/
    if (!SetEvent(event_connect_answer))
    {
      sql_perror("Can't create connection with client in shared memory service ! Can't send answer event.");
      error_allow = TRUE;
      goto errorconn;
    }

/*
  Set event that client should receive data
*/
    if (!SetEvent(event_client_read))
    {
      sql_perror("Can't create connection with client in shared memory service ! Can't set client to read's mode.");
      error_allow = TRUE;
      goto errorconn;
    }
    if (!(thd->net.vio = vio_new_win32shared_memory(&thd->net,handle_client_file_map,handle_client_map,event_client_wrote,
                         event_client_read,event_server_wrote,event_server_read)) ||
                          my_net_init(&thd->net, thd->net.vio))
    {
      close_connection(thd, ER_OUT_OF_RESOURCES, 1);
      delete thd;
      error_allow = TRUE;
    }
    /* host name is unknown */
errorconn:
    if (error_allow)
    {
      if (!handle_client_map) UnmapViewOfFile(handle_client_map);
      if (!handle_client_file_map) CloseHandle(handle_client_file_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);
      continue;
    }
    thd->host = my_strdup(localhost,MYF(0)); /* Host is unknown */
    create_new_thread(thd);
    uint4korr(connect_number++);
  }
error:
  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);
  if (!event_connect_request) CloseHandle(event_connect_request);

  decrement_handler_count();
  DBUG_RETURN(0);
}
#endif /* HAVE_SMEM */
#endif /* EMBEDDED_LIBRARY */


/****************************************************************************
  Handle start options
******************************************************************************/

enum options
{
  OPT_ISAM_LOG=256,            OPT_SKIP_NEW,
  OPT_SKIP_GRANT,              OPT_SKIP_LOCK,
  OPT_ENABLE_LOCK,             OPT_USE_LOCKING,
  OPT_SOCKET,                  OPT_UPDATE_LOG,
  OPT_BIN_LOG,                 OPT_SKIP_RESOLVE,
  OPT_SKIP_NETWORKING,         OPT_BIN_LOG_INDEX,
  OPT_BIND_ADDRESS,            OPT_PID_FILE,
  OPT_SKIP_PRIOR,              OPT_BIG_TABLES,
  OPT_STANDALONE,              OPT_ONE_THREAD,
  OPT_CONSOLE,                 OPT_LOW_PRIORITY_UPDATES,
  OPT_SKIP_HOST_CACHE,         OPT_LONG_FORMAT,
  OPT_FLUSH,                   OPT_SAFE,
  OPT_BOOTSTRAP,               OPT_SKIP_SHOW_DB,
  OPT_TABLE_TYPE,              OPT_INIT_FILE,
  OPT_DELAY_KEY_WRITE_ALL,     OPT_SLOW_QUERY_LOG,
  OPT_DELAY_KEY_WRITE,	       OPT_CHARSETS_DIR,
  OPT_BDB_HOME,                OPT_BDB_LOG,
  OPT_BDB_TMP,                 OPT_BDB_NOSYNC,
  OPT_BDB_LOCK,                OPT_BDB,
  OPT_BDB_NO_RECOVER,	    OPT_BDB_SHARED,
  OPT_MASTER_HOST,             OPT_MASTER_USER,
  OPT_MASTER_PASSWORD,         OPT_MASTER_PORT,
  OPT_MASTER_INFO_FILE,        OPT_MASTER_CONNECT_RETRY,
  OPT_MASTER_RETRY_COUNT,
  OPT_MASTER_SSL,              OPT_MASTER_SSL_KEY,
  OPT_MASTER_SSL_CERT,         OPT_MASTER_SSL_CAPATH,
  OPT_MASTER_SSL_CIPHER,
  OPT_SQL_BIN_UPDATE_SAME,     OPT_REPLICATE_DO_DB,
  OPT_REPLICATE_IGNORE_DB,     OPT_LOG_SLAVE_UPDATES,
  OPT_BINLOG_DO_DB,            OPT_BINLOG_IGNORE_DB,
  OPT_WANT_CORE,               OPT_CONCURRENT_INSERT,
  OPT_MEMLOCK,                 OPT_MYISAM_RECOVER,
  OPT_REPLICATE_REWRITE_DB,    OPT_SERVER_ID,
  OPT_SKIP_SLAVE_START,        OPT_SKIP_INNOBASE,
  OPT_SAFEMALLOC_MEM_LIMIT,    OPT_REPLICATE_DO_TABLE,
  OPT_REPLICATE_IGNORE_TABLE,  OPT_REPLICATE_WILD_DO_TABLE,
  OPT_REPLICATE_WILD_IGNORE_TABLE,
  OPT_DISCONNECT_SLAVE_EVENT_COUNT,
  OPT_ABORT_SLAVE_EVENT_COUNT,
  OPT_INNODB_DATA_HOME_DIR,
  OPT_INNODB_DATA_FILE_PATH,
  OPT_INNODB_LOG_GROUP_HOME_DIR,
  OPT_INNODB_LOG_ARCH_DIR,
  OPT_INNODB_LOG_ARCHIVE,
  OPT_INNODB_FLUSH_LOG_AT_TRX_COMMIT,
  OPT_INNODB_FLUSH_METHOD,
  OPT_INNODB_FAST_SHUTDOWN,
  OPT_SAFE_SHOW_DB,
  OPT_INNODB, OPT_ISAM, OPT_SKIP_SAFEMALLOC,
  OPT_TEMP_POOL, OPT_TX_ISOLATION,
  OPT_SKIP_STACK_TRACE, OPT_SKIP_SYMLINKS,
  OPT_MAX_BINLOG_DUMP_EVENTS, OPT_SPORADIC_BINLOG_DUMP_FAIL,
  OPT_SAFE_USER_CREATE, OPT_SQL_MODE,
  OPT_HAVE_NAMED_PIPE,
  OPT_DO_PSTACK, OPT_REPORT_HOST,
  OPT_REPORT_USER, OPT_REPORT_PASSWORD, OPT_REPORT_PORT,
  OPT_SHOW_SLAVE_AUTH_INFO, OPT_OLD_RPL_COMPAT,
  OPT_SLAVE_LOAD_TMPDIR, OPT_NO_MIX_TYPE,
  OPT_RPL_RECOVERY_RANK,OPT_INIT_RPL_ROLE,
  OPT_RELAY_LOG, OPT_RELAY_LOG_INDEX, OPT_RELAY_LOG_INFO_FILE,
  OPT_SLAVE_SKIP_ERRORS, OPT_DES_KEY_FILE, OPT_LOCAL_INFILE,
  OPT_RECKLESS_SLAVE,
  OPT_SSL_SSL, OPT_SSL_KEY, OPT_SSL_CERT, OPT_SSL_CA,
  OPT_SSL_CAPATH, OPT_SSL_CIPHER,
  OPT_BACK_LOG, OPT_BINLOG_CACHE_SIZE,
  OPT_CONNECT_TIMEOUT, OPT_DELAYED_INSERT_TIMEOUT,
  OPT_DELAYED_INSERT_LIMIT, OPT_DELAYED_QUEUE_SIZE,
  OPT_FLUSH_TIME, OPT_FT_MIN_WORD_LEN,
  OPT_FT_MAX_WORD_LEN, OPT_FT_MAX_WORD_LEN_FOR_SORT, OPT_FT_STOPWORD_FILE,
  OPT_INTERACTIVE_TIMEOUT, OPT_JOIN_BUFF_SIZE,
  OPT_KEY_BUFFER_SIZE, OPT_LONG_QUERY_TIME,
  OPT_LOWER_CASE_TABLE_NAMES, OPT_MAX_ALLOWED_PACKET,
  OPT_MAX_BINLOG_CACHE_SIZE, OPT_MAX_BINLOG_SIZE,
  OPT_MAX_CONNECTIONS, OPT_MAX_CONNECT_ERRORS,
  OPT_MAX_DELAYED_THREADS, OPT_MAX_HEP_TABLE_SIZE,
  OPT_MAX_JOIN_SIZE, OPT_MAX_LENGTH_FOR_SORT_DATA, OPT_MAX_SORT_LENGTH,
  OPT_MAX_TMP_TABLES, OPT_MAX_USER_CONNECTIONS,
  OPT_MAX_WRITE_LOCK_COUNT, OPT_BULK_INSERT_BUFFER_SIZE,
  OPT_MAX_ERROR_COUNT, OPT_MAX_PREP_STMT,
  OPT_MYISAM_BLOCK_SIZE, OPT_MYISAM_MAX_EXTRA_SORT_FILE_SIZE,
  OPT_MYISAM_MAX_SORT_FILE_SIZE, OPT_MYISAM_SORT_BUFFER_SIZE,
  OPT_NET_BUFFER_LENGTH, OPT_NET_RETRY_COUNT,
  OPT_NET_READ_TIMEOUT, OPT_NET_WRITE_TIMEOUT,
  OPT_OPEN_FILES_LIMIT,
  OPT_PRELOAD_BUFFER_SIZE,
  OPT_QUERY_CACHE_LIMIT, OPT_QUERY_CACHE_MIN_RES_UNIT, OPT_QUERY_CACHE_SIZE,
  OPT_QUERY_CACHE_TYPE, OPT_RECORD_BUFFER,
  OPT_RECORD_RND_BUFFER, OPT_RELAY_LOG_SPACE_LIMIT, OPT_RELAY_LOG_PURGE,
  OPT_SLAVE_NET_TIMEOUT, OPT_SLAVE_COMPRESSED_PROTOCOL, OPT_SLOW_LAUNCH_TIME,
  OPT_READONLY,
  OPT_SORT_BUFFER, OPT_TABLE_CACHE,
  OPT_THREAD_CONCURRENCY, OPT_THREAD_CACHE_SIZE,
  OPT_TMP_TABLE_SIZE, OPT_THREAD_STACK,
  OPT_WAIT_TIMEOUT, OPT_MYISAM_REPAIR_THREADS,
  OPT_INNODB_MIRRORED_LOG_GROUPS,
  OPT_INNODB_LOG_FILES_IN_GROUP,
  OPT_INNODB_LOG_FILE_SIZE,
  OPT_INNODB_LOG_BUFFER_SIZE,
  OPT_INNODB_BUFFER_POOL_SIZE,
  OPT_INNODB_BUFFER_POOL_AWE_MEM_MB,
  OPT_INNODB_ADDITIONAL_MEM_POOL_SIZE,
  OPT_INNODB_FILE_IO_THREADS,
  OPT_INNODB_LOCK_WAIT_TIMEOUT,
  OPT_INNODB_THREAD_CONCURRENCY,
  OPT_INNODB_FORCE_RECOVERY,
  OPT_INNODB_MAX_DIRTY_PAGES_PCT,
  OPT_BDB_CACHE_SIZE,
  OPT_BDB_LOG_BUFFER_SIZE,
  OPT_BDB_MAX_LOCK,
  OPT_ERROR_LOG_FILE,
  OPT_ENABLE_SHARED_MEMORY,
  OPT_SHARED_MEMORY_BASE_NAME,
  OPT_OLD_PASSWORDS,
  OPT_EXPIRE_LOGS_DAYS,
  OPT_DEFAULT_WEEK_FORMAT,
  OPT_GROUP_CONCAT_MAX_LEN,
  OPT_DEFAULT_COLLATION
};


#define LONG_TIMEOUT ((ulong) 3600L*24L*365L)

struct my_option my_long_options[] =
{
  {"ansi", 'a', "Use ANSI SQL syntax instead of MySQL syntax.", 0, 0, 0,
   GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"basedir", 'b',
   "Path to installation directory. All paths are usually resolved relative to this.",
   (gptr*) &mysql_home_ptr, (gptr*) &mysql_home_ptr, 0, GET_STR, REQUIRED_ARG,
   0, 0, 0, 0, 0, 0},
#ifdef HAVE_BERKELEY_DB
  {"bdb-home", OPT_BDB_HOME, "Berkeley home directory.", (gptr*) &berkeley_home,
   (gptr*) &berkeley_home, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"bdb-lock-detect", OPT_BDB_LOCK,
   "Berkeley lock detect (DEFAULT, OLDEST, RANDOM or YOUNGEST, # sec).",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"bdb-logdir", OPT_BDB_LOG, "Berkeley DB log file directory.",
   (gptr*) &berkeley_logdir, (gptr*) &berkeley_logdir, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"bdb-no-recover", OPT_BDB_NO_RECOVER,
   "Don't try to recover Berkeley DB tables on start.", 0, 0, 0, GET_NO_ARG,
   NO_ARG, 0, 0, 0, 0, 0, 0},
  {"bdb-no-sync", OPT_BDB_NOSYNC, "Don't synchronously flush logs.", 0, 0, 0,
   GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"bdb-shared-data", OPT_BDB_SHARED,
   "Start Berkeley DB in multi-process mode.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0,
   0, 0, 0, 0, 0},
  {"bdb-tmpdir", OPT_BDB_TMP, "Berkeley DB tempfile name.",
   (gptr*) &berkeley_tmpdir, (gptr*) &berkeley_tmpdir, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#endif /* HAVE_BERKELEY_DB */
  {"bdb", OPT_BDB, "Enable Berkeley DB (if this version of MySQL supports it). \
Disable with --skip-bdb (will save memory).",
   (gptr*) &opt_bdb, (gptr*) &opt_bdb, 0, GET_BOOL, NO_ARG, 1, 0, 0,
   0, 0, 0},
  {"big-tables", OPT_BIG_TABLES,
   "Allow big result sets by saving all temporary sets on file (Solves most 'table full' errors).",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"binlog-do-db", OPT_BINLOG_DO_DB,
   "Tells the master it should log updates for the specified database, and exclude all others not explicitly mentioned.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"binlog-ignore-db", OPT_BINLOG_IGNORE_DB,
   "Tells the master that updates to the given database should not be logged tothe binary log.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"bind-address", OPT_BIND_ADDRESS, "IP address to bind to.",
   (gptr*) &my_bind_addr_str, (gptr*) &my_bind_addr_str, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"bootstrap", OPT_BOOTSTRAP, "Used by mysql installation scripts.", 0, 0, 0,
   GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"console", OPT_CONSOLE, "Write error output on screen; Don't remove the console window on windows.",
   (gptr*) &opt_console, (gptr*) &opt_console, 0, GET_BOOL, NO_ARG, 0, 0, 0,
   0, 0, 0},
#ifdef __WIN__
  {"standalone", OPT_STANDALONE,
  "Dummy option to start as a standalone program (NT).", 0, 0, 0, GET_NO_ARG,
   NO_ARG, 0, 0, 0, 0, 0, 0},
#endif
  {"core-file", OPT_WANT_CORE, "Write core on errors.", 0, 0, 0, GET_NO_ARG,
   NO_ARG, 0, 0, 0, 0, 0, 0},
  {"chroot", 'r', "Chroot mysqld daemon during startup.",
   (gptr*) &mysqld_chroot, (gptr*) &mysqld_chroot, 0, GET_STR, REQUIRED_ARG,
   0, 0, 0, 0, 0, 0},
  {"character-sets-dir", OPT_CHARSETS_DIR,
   "Directory where character sets are.", (gptr*) &charsets_dir,
   (gptr*) &charsets_dir, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"datadir", 'h', "Path to the database root.", (gptr*) &mysql_data_home,
   (gptr*) &mysql_data_home, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#ifndef DBUG_OFF
  {"debug", '#', "Debug log.", (gptr*) &default_dbug_option,
   (gptr*) &default_dbug_option, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
#ifdef SAFEMALLOC
  {"skip-safemalloc", OPT_SKIP_SAFEMALLOC,
   "Don't use the memory allocation checking.", 0, 0, 0, GET_NO_ARG, NO_ARG,
   0, 0, 0, 0, 0, 0},
#endif
#endif
#ifdef HAVE_OPENSSL
  {"des-key-file", OPT_DES_KEY_FILE,
   "Load keys for des_encrypt() and des_encrypt from given file.",
   (gptr*) &des_key_file, (gptr*) &des_key_file, 0, GET_STR, REQUIRED_ARG,
   0, 0, 0, 0, 0, 0},
#endif /* HAVE_OPENSSL */
  {"default-character-set", 'C', "Set the default character set.",
   (gptr*) &default_character_set_name, (gptr*) &default_character_set_name,
   0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
  {"default-collation", OPT_DEFAULT_COLLATION, "Set the default collation.",
   (gptr*) &default_collation_name, (gptr*) &default_collation_name,
   0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
  {"default-table-type", OPT_TABLE_TYPE,
   "Set the default table type for tables.", 0, 0,
   0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"delay-key-write", OPT_DELAY_KEY_WRITE, "Type of DELAY_KEY_WRITE.",
   0,0,0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
  {"delay-key-write-for-all-tables", OPT_DELAY_KEY_WRITE_ALL,
   "Don't flush key buffers between writes for any MyISAM table (Deprecated option, use --delay-key-write=all instead).",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"enable-locking", OPT_ENABLE_LOCK,
   "Deprecated option, use --external-locking instead.",
   (gptr*) &opt_external_locking, (gptr*) &opt_external_locking,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
#ifdef __NT__
  {"enable-named-pipe", OPT_HAVE_NAMED_PIPE, "Enable the named pipe (NT).",
   (gptr*) &opt_enable_named_pipe, (gptr*) &opt_enable_named_pipe, 0, GET_BOOL,
   NO_ARG, 0, 0, 0, 0, 0, 0},
#endif
  {"enable-pstack", OPT_DO_PSTACK, "Print a symbolic stack trace on failure.",
   (gptr*) &opt_do_pstack, (gptr*) &opt_do_pstack, 0, GET_BOOL, NO_ARG, 0, 0,
   0, 0, 0, 0},
#ifdef HAVE_SMEM
  {"shared-memory", OPT_ENABLE_SHARED_MEMORY,
   "Enable the shared memory.",(gptr*) &opt_enable_shared_memory, (gptr*) &opt_enable_shared_memory,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
#endif
  {"exit-info", 'T', "Used for debugging;  Use at your own risk!", 0, 0, 0,
   GET_LONG, OPT_ARG, 0, 0, 0, 0, 0, 0},
  {"flush", OPT_FLUSH, "Flush tables to disk between SQL commands.", 0, 0, 0,
   GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  { "group_concat_max_len", OPT_GROUP_CONCAT_MAX_LEN,
    "The maximum length of the result of function  group_concat.",
    (gptr*) &global_system_variables.group_concat_max_len,
    (gptr*) &max_system_variables.group_concat_max_len, 0, GET_ULONG,
    REQUIRED_ARG, 1024, 4, (long) ~0, 0, 1, 0},
  /* We must always support the next option to make scripts like mysqltest
     easier to do */
  {"init-rpl-role", OPT_INIT_RPL_ROLE, "Set the replication role.", 0, 0, 0,
   GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"innodb_data_file_path", OPT_INNODB_DATA_FILE_PATH,
   "Path to individual files and their sizes.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#ifdef HAVE_INNOBASE_DB
  {"innodb_data_home_dir", OPT_INNODB_DATA_HOME_DIR,
   "The common part for Innodb table spaces.", (gptr*) &innobase_data_home_dir,
   (gptr*) &innobase_data_home_dir, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0,
   0},
  {"innodb_log_group_home_dir", OPT_INNODB_LOG_GROUP_HOME_DIR,
   "Path to innodb log files.", (gptr*) &innobase_log_group_home_dir,
   (gptr*) &innobase_log_group_home_dir, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0,
   0, 0},
  {"innodb_log_arch_dir", OPT_INNODB_LOG_ARCH_DIR,
   "Where full logs should be archived.", (gptr*) &innobase_log_arch_dir,
   (gptr*) &innobase_log_arch_dir, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"innodb_log_archive", OPT_INNODB_LOG_ARCHIVE,
   "Set to 1 if you want to have logs archived.", 0, 0, 0, GET_LONG, OPT_ARG,
   0, 0, 0, 0, 0, 0},
  {"innodb_flush_log_at_trx_commit", OPT_INNODB_FLUSH_LOG_AT_TRX_COMMIT,
   "Set to 0 (write and flush once per second), 1 (write and flush at each commit) or 2 (write at commit, flush once per second).",
   (gptr*) &innobase_flush_log_at_trx_commit,
   (gptr*) &innobase_flush_log_at_trx_commit,
   0, GET_UINT, OPT_ARG,  1, 0, 2, 0, 0, 0},
  {"innodb_flush_method", OPT_INNODB_FLUSH_METHOD,
   "With which method to flush data.", (gptr*) &innobase_unix_file_flush_method,
   (gptr*) &innobase_unix_file_flush_method, 0, GET_STR, REQUIRED_ARG, 0, 0, 0,
   0, 0, 0},
  {"innodb_fast_shutdown", OPT_INNODB_FAST_SHUTDOWN,
   "Speeds up server shutdown process.", (gptr*) &innobase_fast_shutdown,
   (gptr*) &innobase_fast_shutdown, 0, GET_BOOL, NO_ARG, 1, 0, 0, 0, 0, 0},
  {"innodb_max_dirty_pages_pct", OPT_INNODB_MAX_DIRTY_PAGES_PCT,
   "Percentage of dirty pages allowed in bufferpool.", (gptr*) &srv_max_buf_pool_modified_pct,
   (gptr*) &srv_max_buf_pool_modified_pct, 0, GET_ULONG, REQUIRED_ARG, 90, 0, 100, 0, 0, 0},
#endif /* End HAVE_INNOBASE_DB */
  {"help", '?', "Display this help and exit.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0,
   0, 0, 0, 0, 0},
  {"init-file", OPT_INIT_FILE, "Read SQL commands from this file at startup.",
   (gptr*) &opt_init_file, (gptr*) &opt_init_file, 0, GET_STR, REQUIRED_ARG,
   0, 0, 0, 0, 0, 0},
  {"log", 'l', "Log connections and queries to file.", (gptr*) &opt_logname,
   (gptr*) &opt_logname, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
  {"language", 'L',
   "Client error messages in given language. May be given as a full path.",
   (gptr*) &language_ptr, (gptr*) &language_ptr, 0, GET_STR, REQUIRED_ARG,
   0, 0, 0, 0, 0, 0},
  {"local-infile", OPT_LOCAL_INFILE,
   "Enable/disable LOAD DATA LOCAL INFILE (takes values 1|0).",
   (gptr*) &opt_local_infile,
   (gptr*) &opt_local_infile, 0, GET_BOOL, OPT_ARG,
   1, 0, 0, 0, 0, 0},
  {"log-bin", OPT_BIN_LOG,
   "Log update queries in binary format.",
   (gptr*) &opt_bin_logname, (gptr*) &opt_bin_logname, 0, GET_STR_ALLOC,
   OPT_ARG, 0, 0, 0, 0, 0, 0},
  {"log-bin-index", OPT_BIN_LOG_INDEX,
   "File that holds the names for last binary log files.",
   (gptr*) &opt_binlog_index_name, (gptr*) &opt_binlog_index_name, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"log-isam", OPT_ISAM_LOG, "Log all MyISAM changes to file.",
   (gptr*) &myisam_log_filename, (gptr*) &myisam_log_filename, 0, GET_STR,
   OPT_ARG, 0, 0, 0, 0, 0, 0},
  {"log-update", OPT_UPDATE_LOG,
   "Log updates to file.# where # is a unique number if not given.",
   (gptr*) &opt_update_logname, (gptr*) &opt_update_logname, 0, GET_STR,
   OPT_ARG, 0, 0, 0, 0, 0, 0},
  {"log-slow-queries", OPT_SLOW_QUERY_LOG,
   "Log slow queries to this log file. Defaults logging to hostname-slow.log file.",
   (gptr*) &opt_slow_logname, (gptr*) &opt_slow_logname, 0, GET_STR, OPT_ARG,
   0, 0, 0, 0, 0, 0},
  {"log-long-format", OPT_LONG_FORMAT,
   "Log some extra information to update log.", 0, 0, 0, GET_NO_ARG, NO_ARG,
   0, 0, 0, 0, 0, 0},
  {"log-slave-updates", OPT_LOG_SLAVE_UPDATES,
   "Tells the slave to log the updates from the slave thread to the binary log. You will need to turn it on if you plan to daisy-chain the slaves.",
   (gptr*) &opt_log_slave_updates, (gptr*) &opt_log_slave_updates, 0, GET_BOOL,
   NO_ARG, 0, 0, 0, 0, 0, 0},
  {"low-priority-updates", OPT_LOW_PRIORITY_UPDATES,
   "INSERT/DELETE/UPDATE has lower priority than selects.",
   (gptr*) &global_system_variables.low_priority_updates,
   (gptr*) &max_system_variables.low_priority_updates,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"master-host", OPT_MASTER_HOST,
   "Master hostname or IP address for replication. If not set, the slave thread will not be started. Note that the setting of master-host will be ignored if there exists a valid master.info file.",
   (gptr*) &master_host, (gptr*) &master_host, 0, GET_STR, REQUIRED_ARG, 0, 0,
   0, 0, 0, 0},
  {"master-user", OPT_MASTER_USER,
   "The username the slave thread will use for authentication when connecting to the master. The user must have FILE privilege. If the master user is not set, user test is assumed. The value in master.info will take precedence if it can be read.",
   (gptr*) &master_user, (gptr*) &master_user, 0, GET_STR, REQUIRED_ARG, 0, 0,
   0, 0, 0, 0},
  {"master-password", OPT_MASTER_PASSWORD,
   "The password the slave thread will authenticate with when connecting to the master. If not set, an empty password is assumed.The value in master.info will take precedence if it can be read.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"master-port", OPT_MASTER_PORT,
   "The port the master is listening on. If not set, the compiled setting of MYSQL_PORT is assumed. If you have not tinkered with configure options, this should be 3306. The value in master.info will take precedence if it can be read.",
   (gptr*) &master_port, (gptr*) &master_port, 0, GET_UINT, REQUIRED_ARG,
   MYSQL_PORT, 0, 0, 0, 0, 0},
  {"master-connect-retry", OPT_MASTER_CONNECT_RETRY,
   "The number of seconds the slave thread will sleep before retrying to connect to the master in case the master goes down or the connection is lost.",
   (gptr*) &master_connect_retry, (gptr*) &master_connect_retry, 0, GET_UINT,
   REQUIRED_ARG, 60, 0, 0, 0, 0, 0},
  {"master-retry-count", OPT_MASTER_RETRY_COUNT,
   "The number of tries the slave will make to connect to the master before giving up.",
   (gptr*) &master_retry_count, (gptr*) &master_retry_count, 0, GET_ULONG,
   REQUIRED_ARG, 3600*24, 0, 0, 0, 0, 0},
  {"master-info-file", OPT_MASTER_INFO_FILE,
   "The location and name of the file that remembers the master and where the I/O replication \
thread is in the master's binlogs.",
   (gptr*) &master_info_file, (gptr*) &master_info_file, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"master-ssl", OPT_MASTER_SSL,
   "Planned to enable the slave to connect to the master using SSL. Does nothing yet.",
   (gptr*) &master_ssl, (gptr*) &master_ssl, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0,
   0, 0},
  {"master-ssl-key", OPT_MASTER_SSL_KEY,
   "Master SSL keyfile name. Only applies if you have enabled master-ssl. Does \
nothing yet.",
   (gptr*) &master_ssl_key, (gptr*) &master_ssl_key, 0, GET_STR, OPT_ARG,
   0, 0, 0, 0, 0, 0},
  {"master-ssl-cert", OPT_MASTER_SSL_CERT,
   "Master SSL certificate file name. Only applies if you have enabled \
master-ssl. Does nothing yet.",
   (gptr*) &master_ssl_cert, (gptr*) &master_ssl_cert, 0, GET_STR, OPT_ARG,
   0, 0, 0, 0, 0, 0},
  {"master-ssl-capath", OPT_MASTER_SSL_CAPATH,
   "Master SSL CA path. Only applies if you have enabled master-ssl. \
Does nothing yet.",
   (gptr*) &master_ssl_capath, (gptr*) &master_ssl_capath, 0, GET_STR, OPT_ARG,
   0, 0, 0, 0, 0, 0},
  {"master-ssl-cipher", OPT_MASTER_SSL_CIPHER,
   "Master SSL cipher. Only applies if you have enabled master-ssl. \
Does nothing yet.",
   (gptr*) &master_ssl_cipher, (gptr*) &master_ssl_capath, 0, GET_STR, OPT_ARG,
   0, 0, 0, 0, 0, 0},
  {"myisam-recover", OPT_MYISAM_RECOVER,
   "Syntax: myisam-recover[=option[,option...]], where option can be DEFAULT, BACKUP or FORCE.",
   (gptr*) &myisam_recover_options_str, (gptr*) &myisam_recover_options_str, 0,
   GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
  {"memlock", OPT_MEMLOCK, "Lock mysqld in memory.", (gptr*) &locked_in_memory,
   (gptr*) &locked_in_memory, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
#ifdef HAVE_REPLICATION
  {"disconnect-slave-event-count", OPT_DISCONNECT_SLAVE_EVENT_COUNT,
   "Option used by mysql-test for debugging and testing of replication.",
   (gptr*) &disconnect_slave_event_count,
   (gptr*) &disconnect_slave_event_count, 0, GET_INT, REQUIRED_ARG, 0, 0, 0,
   0, 0, 0},
  {"abort-slave-event-count", OPT_ABORT_SLAVE_EVENT_COUNT,
   "Option used by mysql-test for debugging and testing of replication.",
   (gptr*) &abort_slave_event_count,  (gptr*) &abort_slave_event_count,
   0, GET_INT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"max-binlog-dump-events", OPT_MAX_BINLOG_DUMP_EVENTS,
   "Option used by mysql-test for debugging and testing of replication.",
   (gptr*) &max_binlog_dump_events, (gptr*) &max_binlog_dump_events, 0,
   GET_INT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"sporadic-binlog-dump-fail", OPT_SPORADIC_BINLOG_DUMP_FAIL,
   "Option used by mysql-test for debugging and testing of replication.",
   (gptr*) &opt_sporadic_binlog_dump_fail,
   (gptr*) &opt_sporadic_binlog_dump_fail, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0,
   0},
#endif /* HAVE_REPLICATION */
  {"safemalloc-mem-limit", OPT_SAFEMALLOC_MEM_LIMIT,
   "Simulate memory shortage when compiled with the --with-debug=full option.",
   0, 0, 0, GET_ULL, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"new", 'n', "Use very new possible 'unsafe' functions.",
   (gptr*) &global_system_variables.new_mode,
   (gptr*) &max_system_variables.new_mode,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
#ifdef NOT_YET
  {"no-mix-table-types", OPT_NO_MIX_TYPE, "Don't allow commands with uses two different table types.",
   (gptr*) &opt_no_mix_types, (gptr*) &opt_no_mix_types, 0, GET_BOOL, NO_ARG,
   0, 0, 0, 0, 0, 0},
#endif
  {"old-protocol", 'o', "Use the old (3.20) protocol client/server protocol.",
   (gptr*) &protocol_version, (gptr*) &protocol_version, 0, GET_UINT, NO_ARG,
   PROTOCOL_VERSION, 0, 0, 0, 0, 0},
  {"old-rpl-compat", OPT_OLD_RPL_COMPAT,
   "Use old LOAD DATA format in the binary log (don't save data in file).",
   (gptr*) &opt_old_rpl_compat, (gptr*) &opt_old_rpl_compat, 0, GET_BOOL,
   NO_ARG, 0, 0, 0, 0, 0, 0},
#ifdef ONE_THREAD
  {"one-thread", OPT_ONE_THREAD,
   "Only use one thread (for debugging under Linux).", 0, 0, 0, GET_NO_ARG,
   NO_ARG, 0, 0, 0, 0, 0, 0},
#endif
  {"pid-file", OPT_PID_FILE, "Pid file used by safe_mysqld.",
   (gptr*) &pidfile_name_ptr, (gptr*) &pidfile_name_ptr, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"log-error", OPT_ERROR_LOG_FILE, "Log error file.",
   (gptr*) &log_error_file_ptr, (gptr*) &log_error_file_ptr, 0, GET_STR,
   OPT_ARG, 0, 0, 0, 0, 0, 0},
  {"port", 'P', "Port number to use for connection.", (gptr*) &mysqld_port,
   (gptr*) &mysqld_port, 0, GET_UINT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"reckless-slave", OPT_RECKLESS_SLAVE, "Used for debugging.", 0, 0, 0, GET_NO_ARG,
   NO_ARG, 0, 0, 0, 0, 0, 0},
  {"replicate-do-db", OPT_REPLICATE_DO_DB,
   "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.%.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"replicate-do-table", OPT_REPLICATE_DO_TABLE,
   "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},
  {"replicate-wild-do-table", OPT_REPLICATE_WILD_DO_TABLE,
   "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.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"replicate-ignore-db", OPT_REPLICATE_IGNORE_DB,
   "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},
  {"replicate-ignore-table", OPT_REPLICATE_IGNORE_TABLE,
   "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-datbase updates, in contrast to replicate-ignore-db.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"replicate-wild-ignore-table", OPT_REPLICATE_WILD_IGNORE_TABLE,
   "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.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"replicate-rewrite-db", OPT_REPLICATE_REWRITE_DB,
   "Updates to a database with a different name than the original. Example: replicate-rewrite-db=master_db_name->slave_db_name.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  // In replication, we may need to tell the other servers how to connect
  {"report-host", OPT_REPORT_HOST,
   "Hostname or IP of the slave to be reported to to the master during slave registration. Will appear in the output of SHOW SLAVE HOSTS. Leave unset if you do not want the slave to register itself with the master. Note that it is not sufficient for the master to simply read the IP of the slave off the socket once the slave connects. Due to NAT and other routing issues, that IP may not be valid for connecting to the slave from the master or other hosts.",
   (gptr*) &report_host, (gptr*) &report_host, 0, GET_STR, REQUIRED_ARG, 0, 0,
   0, 0, 0, 0},
  {"report-user", OPT_REPORT_USER, "Undocumented.", (gptr*) &report_user,
   (gptr*) &report_user, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"report-password", OPT_REPORT_PASSWORD, "Undocumented.",
   (gptr*) &report_password, (gptr*) &report_password, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"report-port", OPT_REPORT_PORT,
   "Port for connecting to slave reported to the master during slave registration. Set it only if the slave is listening on a non-default port or if you have a special tunnel from the master or other clients to the slave. If not sure, leave this option unset.",
   (gptr*) &report_port, (gptr*) &report_port, 0, GET_UINT, REQUIRED_ARG,
   MYSQL_PORT, 0, 0, 0, 0, 0},
  {"rpl-recovery-rank", OPT_RPL_RECOVERY_RANK, "Undocumented.",
   (gptr*) &rpl_recovery_rank, (gptr*) &rpl_recovery_rank, 0, GET_ULONG,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"relay-log", OPT_RELAY_LOG,
   "The location and name to use for relay logs.",
   (gptr*) &opt_relay_logname, (gptr*) &opt_relay_logname, 0,
   GET_STR_ALLOC, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"relay-log-index", OPT_RELAY_LOG_INDEX,
   "The location and name to use for the file that keeps a list of the last \
relay logs.",
   (gptr*) &opt_relaylog_index_name, (gptr*) &opt_relaylog_index_name, 0,
   GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"safe-mode", OPT_SAFE, "Skip some optimize stages (for testing).",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"old-passwords", OPT_OLD_PASSWORDS, "Use old password encryption method (needed for 4.0 and older clients).",
   (gptr*) &opt_old_passwords, (gptr*) &opt_old_passwords, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
#ifndef TO_BE_DELETED
  {"safe-show-database", OPT_SAFE_SHOW_DB,
   "Deprecated option; One should use GRANT SHOW DATABASES instead...",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
#endif
  {"safe-user-create", OPT_SAFE_USER_CREATE,
   "Don't allow new user creation by the user who has no write privileges to the mysql.user table.",
   (gptr*) &opt_safe_user_create, (gptr*) &opt_safe_user_create, 0, GET_BOOL,
   NO_ARG, 0, 0, 0, 0, 0, 0},
  {"server-id",	OPT_SERVER_ID,
   "Uniquely identifies the server instance in the community of replication partners.",
   (gptr*) &server_id, (gptr*) &server_id, 0, GET_ULONG, REQUIRED_ARG, 0, 0, 0,
   0, 0, 0},
  {"set-variable", 'O',
   "Change the value of a variable. Please note that this option is deprecated;you can set variables directly with --variable-name=value.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#ifdef HAVE_SMEM
  {"shared_memory_base_name",OPT_SHARED_MEMORY_BASE_NAME,
   "Base name of shared memory.", (gptr*) &shared_memory_base_name, (gptr*) &shared_memory_base_name,
   0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#endif
  {"show-slave-auth-info", OPT_SHOW_SLAVE_AUTH_INFO,
   "Show user and password in SHOW SLAVE STATUS.",
   (gptr*) &opt_show_slave_auth_info, (gptr*) &opt_show_slave_auth_info, 0,
   GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"concurrent-insert", OPT_CONCURRENT_INSERT,
   "Use concurrent insert with MyISAM. Disable with --skip-concurrent-insert.",
   (gptr*) &myisam_concurrent_insert, (gptr*) &myisam_concurrent_insert,
   0, GET_BOOL, NO_ARG, 1, 0, 0, 0, 0, 0},
  {"skip-grant-tables", OPT_SKIP_GRANT,
   "Start without grant tables. This gives all users FULL ACCESS to all tables!",
   (gptr*) &opt_noacl, (gptr*) &opt_noacl, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0,
   0},
  {"innodb", OPT_INNODB, "Enable InnoDB (if this version of MySQL supports it). \
Disable with --skip-innodb (will save memory).",
   (gptr*) &opt_innodb, (gptr*) &opt_innodb, 0, GET_BOOL, NO_ARG, 1, 0, 0,
   0, 0, 0},
  {"isam", OPT_ISAM, "Enable isam (if this version of MySQL supports it). \
Disable with --skip-isam.",
   (gptr*) &opt_isam, (gptr*) &opt_isam, 0, GET_BOOL, NO_ARG, 1, 0, 0,
   0, 0, 0},
  {"skip-locking", OPT_SKIP_LOCK,
   "Deprecated option, use --skip-external-locking instead.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"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},
  {"skip-name-resolve", OPT_SKIP_RESOLVE,
   "Don't resolve hostnames. All hostnames are IP's or 'localhost'.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"skip-networking", OPT_SKIP_NETWORKING,
   "Don't allow connection with TCP/IP.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0,
   0, 0, 0},
  {"skip-new", OPT_SKIP_NEW, "Don't use new, possible wrong routines.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"skip-show-database", OPT_SKIP_SHOW_DB,
   "Don't allow 'SHOW DATABASE' commands.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0,
   0, 0, 0, 0},
  {"skip-slave-start", OPT_SKIP_SLAVE_START,
   "If set, slave is not autostarted.", (gptr*) &opt_skip_slave_start,
   (gptr*) &opt_skip_slave_start, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"skip-stack-trace", OPT_SKIP_STACK_TRACE,
   "Don't print a stack trace on failure.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0,
   0, 0, 0, 0},
  {"skip-symlink", OPT_SKIP_SYMLINKS, "Don't allow symlinking of tables. Depricated option.  Use --skip-symbolic-links instead.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"skip-thread-priority", OPT_SKIP_PRIOR,
   "Don't give threads different priorities.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0,
   0, 0, 0, 0, 0},
  {"relay-log-info-file", OPT_RELAY_LOG_INFO_FILE,
   "The location and name of the file that remembers where the SQL replication \
thread is in the relay logs.",
   (gptr*) &relay_log_info_file, (gptr*) &relay_log_info_file, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#ifdef HAVE_REPLICATION
  {"slave-load-tmpdir", OPT_SLAVE_LOAD_TMPDIR,
   "The location where the slave should put its temporary files when \
replicating a LOAD DATA INFILE command.",
   (gptr*) &slave_load_tmpdir, (gptr*) &slave_load_tmpdir, 0, GET_STR_ALLOC,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"slave-skip-errors", OPT_SLAVE_SKIP_ERRORS,
   "Tells the slave thread to continue replication when a query returns an error from the provided list.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#endif
  {"socket", OPT_SOCKET, "Socket file to use for connection.",
   (gptr*) &mysqld_unix_port, (gptr*) &mysqld_unix_port, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"sql-bin-update-same", OPT_SQL_BIN_UPDATE_SAME,
   "If set, setting SQL_LOG_BIN to a value will automatically set SQL_LOG_UPDATE to the same value and vice versa.",
   (gptr*) &opt_sql_bin_update, (gptr*) &opt_sql_bin_update, 0, GET_BOOL,
   NO_ARG, 0, 0, 0, 0, 0, 0},
  {"sql-mode", OPT_SQL_MODE,
   "Syntax: sql-mode=option[,option[,option...]] where option can be one of: REAL_AS_FLOAT, PIPES_AS_CONCAT, ANSI_QUOTES, IGNORE_SPACE, ONLY_FULL_GROUP_BY, NO_UNSIGNED_SUBTRACTION.",
   (gptr*) &sql_mode_str, (gptr*) &sql_mode_str, 0, GET_STR, REQUIRED_ARG, 0,
   0, 0, 0, 0, 0},
#ifdef HAVE_OPENSSL
#include "sslopt-longopts.h"
#endif
  {"temp-pool", OPT_TEMP_POOL,
   "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.",
   (gptr*) &use_temp_pool, (gptr*) &use_temp_pool, 0, GET_BOOL, NO_ARG, 1,
   0, 0, 0, 0, 0},
  {"tmpdir", 't',
   "Path for temporary files. Several paths may be specified, separated by a "
#if defined( __WIN__) || defined(OS2)
   "semicolon (;)"
#else
   "colon (:)"
#endif
   ", in this case they are used in a round-robin fashion.",
   (gptr*) &opt_mysql_tmpdir,
   (gptr*) &opt_mysql_tmpdir, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"transaction-isolation", OPT_TX_ISOLATION,
   "Default transaction isolation level.", 0, 0, 0, GET_STR, REQUIRED_ARG, 0,
   0, 0, 0, 0, 0},
  {"external-locking", OPT_USE_LOCKING, "Use system (external) locking.  With this option enabled you can run myisamchk to test (not repair) tables while the MySQL server is running.",
   (gptr*) &opt_external_locking, (gptr*) &opt_external_locking,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"use-symbolic-links", 's', "Enable symbolic link support. Depricated option; Use --symbolic-links instead.",
   (gptr*) &my_use_symdir, (gptr*) &my_use_symdir, 0, GET_BOOL, NO_ARG,
   IF_PURIFY(0,1), 0, 0, 0, 0, 0},
  {"--symbolic-links", 's', "Enable symbolic link support.",
   (gptr*) &my_use_symdir, (gptr*) &my_use_symdir, 0, GET_BOOL, NO_ARG,
   IF_PURIFY(0,1), 0, 0, 0, 0, 0},
  {"user", 'u', "Run mysqld daemon as user.", 0, 0, 0, GET_STR, REQUIRED_ARG,
   0, 0, 0, 0, 0, 0},
  {"version", 'V', "Output version information and exit.", 0, 0, 0, GET_NO_ARG,
   NO_ARG, 0, 0, 0, 0, 0, 0},
  {"version", 'v', "Synonym for option -V.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0,
   0, 0, 0, 0},
  {"log-warnings", 'W', "Log some not critical warnings to the log file.",
   (gptr*) &global_system_variables.log_warnings,
   (gptr*) &max_system_variables.log_warnings, 0, GET_BOOL, NO_ARG, 0, 0, 0,
   0, 0, 0},
  {"warnings", 'W', "Deprecated ; Use --log-warnings instead.",
   (gptr*) &global_system_variables.log_warnings,
   (gptr*) &max_system_variables.log_warnings, 0, GET_BOOL, NO_ARG, 0, 0, 0,
   0, 0, 0},
  { "back_log", OPT_BACK_LOG,
    "The number of outstanding connection requests MySQL can have. This comes into play when the main MySQL thread gets very many connection requests in a very short time.",
    (gptr*) &back_log, (gptr*) &back_log, 0, GET_ULONG,
    REQUIRED_ARG, 50, 1, 65535, 0, 1, 0 },
#ifdef HAVE_BERKELEY_DB
  { "bdb_cache_size", OPT_BDB_CACHE_SIZE,
    "The buffer that is allocated to cache index and rows for BDB tables.",
    (gptr*) &berkeley_cache_size, (gptr*) &berkeley_cache_size, 0, GET_ULONG,
    REQUIRED_ARG, KEY_CACHE_SIZE, 20*1024, (long) ~0, 0, IO_SIZE, 0},
  {"bdb_log_buffer_size", OPT_BDB_LOG_BUFFER_SIZE,
   "The buffer that is allocated to cache index and rows for BDB tables.",
   (gptr*) &berkeley_log_buffer_size, (gptr*) &berkeley_log_buffer_size, 0,
   GET_ULONG, REQUIRED_ARG, 0, 256*1024L, ~0L, 0, 1024, 0},
  {"bdb_max_lock", OPT_BDB_MAX_LOCK,
   "The maximum number of locks you can have active on a BDB table.",
   (gptr*) &berkeley_max_lock, (gptr*) &berkeley_max_lock, 0, GET_ULONG,
   REQUIRED_ARG, 10000, 0, (long) ~0, 0, 1, 0},
  /* QQ: The following should be removed soon! */
  {"bdb_lock_max", OPT_BDB_MAX_LOCK, "Synonym for bdb_max_lock.",
   (gptr*) &berkeley_max_lock, (gptr*) &berkeley_max_lock, 0, GET_ULONG,
   REQUIRED_ARG, 10000, 0, (long) ~0, 0, 1, 0},
#endif /* HAVE_BERKELEY_DB */
  {"binlog_cache_size", OPT_BINLOG_CACHE_SIZE,
   "The size of the cache to hold the SQL statements for the binary log during a transaction. If you often use big, multi-statement transactions you can increase this to get more performance.",
   (gptr*) &binlog_cache_size, (gptr*) &binlog_cache_size, 0, GET_ULONG,
   REQUIRED_ARG, 32*1024L, IO_SIZE, ~0L, 0, IO_SIZE, 0},
  {"connect_timeout", OPT_CONNECT_TIMEOUT,
   "The number of seconds the mysqld server is waiting for a connect packet before responding with 'Bad handshake'.",
    (gptr*) &connect_timeout, (gptr*) &connect_timeout,
   0, GET_ULONG, REQUIRED_ARG, CONNECT_TIMEOUT, 2, LONG_TIMEOUT, 0, 1, 0 },
  {"delayed_insert_timeout", OPT_DELAYED_INSERT_TIMEOUT,
   "How long a INSERT DELAYED thread should wait for INSERT statements before terminating.",
   (gptr*) &delayed_insert_timeout, (gptr*) &delayed_insert_timeout, 0,
   GET_ULONG, REQUIRED_ARG, DELAYED_WAIT_TIMEOUT, 1, LONG_TIMEOUT, 0, 1, 0},
  {"delayed_insert_limit", OPT_DELAYED_INSERT_LIMIT,
   "After inserting delayed_insert_limit rows, the INSERT DELAYED handler will check if there are any SELECT statements pending. If so, it allows these to execute before continuing.",
    (gptr*) &delayed_insert_limit, (gptr*) &delayed_insert_limit, 0, GET_ULONG,
    REQUIRED_ARG, DELAYED_LIMIT, 1, ~0L, 0, 1, 0},
  { "delayed_queue_size", OPT_DELAYED_QUEUE_SIZE,
    "What size queue (in rows) should be allocated for handling INSERT DELAYED. If the queue becomes full, any client that does INSERT DELAYED will wait until there is room in the queue again.",
    (gptr*) &delayed_queue_size, (gptr*) &delayed_queue_size, 0, GET_ULONG,
    REQUIRED_ARG, DELAYED_QUEUE_SIZE, 1, ~0L, 0, 1, 0},
  { "flush_time", OPT_FLUSH_TIME,
    "A dedicated thread is created to flush all tables at the given interval.",
    (gptr*) &flush_time, (gptr*) &flush_time, 0, GET_ULONG, REQUIRED_ARG,
    FLUSH_TIME, 0, LONG_TIMEOUT, 0, 1, 0},
  { "ft_min_word_len", OPT_FT_MIN_WORD_LEN,
    "The minimum length of the word to be included in a FULLTEXT index. Note: FULLTEXT indexes must be rebuilt after changing this variable.",
    (gptr*) &ft_min_word_len, (gptr*) &ft_min_word_len, 0, GET_ULONG,
    REQUIRED_ARG, 4, 1, HA_FT_MAXLEN, 0, 1, 0},
  { "ft_max_word_len", OPT_FT_MAX_WORD_LEN,
    "The maximum length of the word to be included in a FULLTEXT index. Note: FULLTEXT indexes must be rebuilt after changing this variable.",
    (gptr*) &ft_max_word_len, (gptr*) &ft_max_word_len, 0, GET_ULONG,
    REQUIRED_ARG, HA_FT_MAXLEN, 10, HA_FT_MAXLEN, 0, 1, 0},
  { "ft_max_word_len_for_sort", OPT_FT_MAX_WORD_LEN_FOR_SORT,
    "The maximum length of the word for repair_by_sorting. Longer words are included the slow way. The lower this value, the more words will be put in one sort bucket.",
    (gptr*) &ft_max_word_len_for_sort, (gptr*) &ft_max_word_len_for_sort, 0, GET_ULONG,
    REQUIRED_ARG, 20, 4, HA_FT_MAXLEN, 0, 1, 0},
  { "ft_stopword_file", OPT_FT_STOPWORD_FILE,
    "Use stopwords from this file instead of built-in list.",
    (gptr*) &ft_stopword_file, (gptr*) &ft_stopword_file, 0, GET_STR,
    REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#ifdef HAVE_INNOBASE_DB
  {"innodb_mirrored_log_groups", OPT_INNODB_MIRRORED_LOG_GROUPS,
   "Number of identical copies of log groups we keep for the database. Currently this should be set to 1.",
   (gptr*) &innobase_mirrored_log_groups,
   (gptr*) &innobase_mirrored_log_groups, 0, GET_LONG, REQUIRED_ARG, 1, 1, 10,
   0, 1, 0},
  {"innodb_log_files_in_group", OPT_INNODB_LOG_FILES_IN_GROUP,
   "Number of log files in the log group. InnoDB writes to the files in a circular fashion. Value 3 is recommended here.",
   (gptr*) &innobase_log_files_in_group, (gptr*) &innobase_log_files_in_group,
   0, GET_LONG, REQUIRED_ARG, 2, 2, 100, 0, 1, 0},
  {"innodb_log_file_size", OPT_INNODB_LOG_FILE_SIZE,
   "Size of each log file in a log group in megabytes.",
   (gptr*) &innobase_log_file_size, (gptr*) &innobase_log_file_size, 0,
   GET_LONG, REQUIRED_ARG, 5*1024*1024L, 1*1024*1024L, ~0L, 0, 1024*1024L, 0},
  {"innodb_log_buffer_size", OPT_INNODB_LOG_BUFFER_SIZE,
   "The size of the buffer which InnoDB uses to write log to the log files on disk.",
   (gptr*) &innobase_log_buffer_size, (gptr*) &innobase_log_buffer_size, 0,
   GET_LONG, REQUIRED_ARG, 1024*1024L, 256*1024L, ~0L, 0, 1024, 0},
  {"innodb_buffer_pool_size", OPT_INNODB_BUFFER_POOL_SIZE,
   "The size of the memory buffer InnoDB uses to cache data and indexes of its tables.",
   (gptr*) &innobase_buffer_pool_size, (gptr*) &innobase_buffer_pool_size, 0,
   GET_LONG, REQUIRED_ARG, 8*1024*1024L, 1024*1024L, ~0L, 0, 1024*1024L, 0},
  {"innodb_buffer_pool_awe_mem_mb", OPT_INNODB_BUFFER_POOL_AWE_MEM_MB,
   "If Windows AWE is used, the size of InnoDB buffer pool allocated from the AWE memory.",
   (gptr*) &innobase_buffer_pool_awe_mem_mb, (gptr*) &innobase_buffer_pool_awe_mem_mb, 0,
   GET_LONG, REQUIRED_ARG, 0, 0, 63000, 0, 1, 0},
  {"innodb_additional_mem_pool_size", OPT_INNODB_ADDITIONAL_MEM_POOL_SIZE,
   "Size of a memory pool InnoDB uses to store data dictionary information and other internal data structures.",
   (gptr*) &innobase_additional_mem_pool_size,
   (gptr*) &innobase_additional_mem_pool_size, 0, GET_LONG, REQUIRED_ARG,
   1*1024*1024L, 512*1024L, ~0L, 0, 1024, 0},
  {"innodb_file_io_threads", OPT_INNODB_FILE_IO_THREADS,
   "Number of file I/O threads in InnoDB.", (gptr*) &innobase_file_io_threads,
   (gptr*) &innobase_file_io_threads, 0, GET_LONG, REQUIRED_ARG, 4, 4, 64, 0,
   1, 0},
  {"innodb_lock_wait_timeout", OPT_INNODB_LOCK_WAIT_TIMEOUT,
   "Timeout in seconds an InnoDB transaction may wait for a lock before being rolled back.",
   (gptr*) &innobase_lock_wait_timeout, (gptr*) &innobase_lock_wait_timeout,
   0, GET_LONG, REQUIRED_ARG, 50, 1, 1024 * 1024 * 1024, 0, 1, 0},
  {"innodb_thread_concurrency", OPT_INNODB_THREAD_CONCURRENCY,
   "Helps in performance tuning in heavily concurrent environments.",
   (gptr*) &innobase_thread_concurrency, (gptr*) &innobase_thread_concurrency,
   0, GET_LONG, REQUIRED_ARG, 8, 1, 1000, 0, 1, 0},
  {"innodb_force_recovery", OPT_INNODB_FORCE_RECOVERY,
   "Helps to save your data in case the disk image of the database becomes corrupt.",
   (gptr*) &innobase_force_recovery, (gptr*) &innobase_force_recovery, 0,
   GET_LONG, REQUIRED_ARG, 0, 0, 6, 0, 1, 0},
#endif /* HAVE_INNOBASE_DB */
  {"interactive_timeout", OPT_INTERACTIVE_TIMEOUT,
   "The number of seconds the server waits for activity on an interactive connection before closing it.",
   (gptr*) &global_system_variables.net_interactive_timeout,
   (gptr*) &max_system_variables.net_interactive_timeout, 0,
   GET_ULONG, REQUIRED_ARG, NET_WAIT_TIMEOUT, 1, LONG_TIMEOUT, 0, 1, 0},
  {"join_buffer_size", OPT_JOIN_BUFF_SIZE,
   "The size of the buffer that is used for full joins.",
   (gptr*) &global_system_variables.join_buff_size,
   (gptr*) &max_system_variables.join_buff_size, 0, GET_ULONG,
   REQUIRED_ARG, 128*1024L, IO_SIZE*2+MALLOC_OVERHEAD, ~0L, MALLOC_OVERHEAD,
   IO_SIZE, 0},
  {"key_buffer_size", OPT_KEY_BUFFER_SIZE,
   "The size of the buffer used for index blocks for MyISAM tables. Increase this to get better index handling (for all reads and multiple writes) to as much as you can afford; 64M on a 256M machine that mainly runs MySQL is quite common.",
   (gptr*) &keybuff_size, (gptr*) &keybuff_size, 0,
   (enum get_opt_var_type) (GET_ULL | GET_ASK_ADDR),
   REQUIRED_ARG, KEY_CACHE_SIZE, MALLOC_OVERHEAD, (long) ~0, MALLOC_OVERHEAD,
   IO_SIZE, 0},
  {"long_query_time", OPT_LONG_QUERY_TIME,
   "Log all queries that have taken more than long_query_time seconds to execute to file.",
   (gptr*) &global_system_variables.long_query_time,
   (gptr*) &max_system_variables.long_query_time, 0, GET_ULONG,
   REQUIRED_ARG, 10, 1, LONG_TIMEOUT, 0, 1, 0},
  {"lower_case_table_names", OPT_LOWER_CASE_TABLE_NAMES,
   "If set to 1 table names are stored in lowercase on disk and table names will be case-insensitive.",
   (gptr*) &lower_case_table_names,
   (gptr*) &lower_case_table_names, 0, GET_BOOL, NO_ARG,
#ifdef FN_NO_CASE_SENCE
    1
#else
    0
#endif
   , 0, 1, 0, 1, 0},
  {"max_allowed_packet", OPT_MAX_ALLOWED_PACKET,
   "Max packetlength to send/receive from to server.",
   (gptr*) &global_system_variables.max_allowed_packet,
   (gptr*) &max_system_variables.max_allowed_packet, 0, GET_ULONG,
   REQUIRED_ARG, 1024*1024L, 80, 1024L*1024L*1024L, MALLOC_OVERHEAD, 1024, 0},
  {"max_binlog_cache_size", OPT_MAX_BINLOG_CACHE_SIZE,
   "Can be used to restrict the total size used to cache a multi-transaction query.",
   (gptr*) &max_binlog_cache_size, (gptr*) &max_binlog_cache_size, 0,
   GET_ULONG, REQUIRED_ARG, ~0L, IO_SIZE, ~0L, 0, IO_SIZE, 0},
  {"max_binlog_size", OPT_MAX_BINLOG_SIZE,
   "Binary log will be rotated automatically when the size crosses the limit.",
   (gptr*) &max_binlog_size, (gptr*) &max_binlog_size, 0, GET_ULONG,
   REQUIRED_ARG, 1024*1024L*1024L, 1024, 1024*1024L*1024L, 0, 1, 0},
  {"max_connections", OPT_MAX_CONNECTIONS,
   "The number of simultaneous clients allowed.", (gptr*) &max_connections,
   (gptr*) &max_connections, 0, GET_ULONG, REQUIRED_ARG, 100, 1, 16384, 0, 1,
   0},
  {"max_connect_errors", OPT_MAX_CONNECT_ERRORS,
   "If there is more than this number of interrupted connections from a host this host will be blocked from further connections.",
   (gptr*) &max_connect_errors, (gptr*) &max_connect_errors, 0, GET_ULONG,
    REQUIRED_ARG, MAX_CONNECT_ERRORS, 1, ~0L, 0, 1, 0},
  {"max_delayed_threads", OPT_MAX_DELAYED_THREADS,
   "Don't start more than this number of threads to handle INSERT DELAYED statements. If set to zero, which means INSERT DELAYED is not used.",
   (gptr*) &max_insert_delayed_threads, (gptr*) &max_insert_delayed_threads,
   0, GET_ULONG, REQUIRED_ARG, 20, 0, 16384, 0, 1, 0},
  {"max_error_count", OPT_MAX_ERROR_COUNT,
   "Max number of errors/warnings to store for a statement.",
   (gptr*) &global_system_variables.max_error_count,
   (gptr*) &max_system_variables.max_error_count,
   0, GET_ULONG, REQUIRED_ARG, DEFAULT_ERROR_COUNT, 1, 65535, 0, 1, 0},
  {"max_heap_table_size", OPT_MAX_HEP_TABLE_SIZE,
   "Don't allow creation of heap tables bigger than this.",
   (gptr*) &global_system_variables.max_heap_table_size,
   (gptr*) &max_system_variables.max_heap_table_size, 0, GET_ULONG,
   REQUIRED_ARG, 16*1024*1024L, 16384, ~0L, MALLOC_OVERHEAD, 1024, 0},
  {"max_join_size", OPT_MAX_JOIN_SIZE,
   "Joins that are probably going to read more than max_join_size records return an error.",
   (gptr*) &global_system_variables.max_join_size,
   (gptr*) &max_system_variables.max_join_size, 0, GET_HA_ROWS, REQUIRED_ARG,
   ~0L, 1, ~0L, 0, 1, 0},
   {"max_length_for_sort_data", OPT_MAX_LENGTH_FOR_SORT_DATA,
    "Max number of bytes in sorted records.",
    (gptr*) &global_system_variables.max_length_for_sort_data,
    (gptr*) &max_system_variables.max_length_for_sort_data, 0, GET_ULONG,
    REQUIRED_ARG, 1024, 4, 8192*1024L, 0, 1, 0},
  {"max_prepared_statements", OPT_MAX_PREP_STMT,
   "Max number of prepared_statements for a thread.",
   (gptr*) &global_system_variables.max_prep_stmt_count,
   (gptr*) &max_system_variables.max_prep_stmt_count, 0, GET_ULONG,
   REQUIRED_ARG, DEFAULT_PREP_STMT_COUNT, 0, ~0L, 0, 1, 0},
  {"max_sort_length", OPT_MAX_SORT_LENGTH,
   "The number of bytes to use when sorting BLOB or TEXT values (only the first max_sort_length bytes of each value are used; the rest are ignored).",
   (gptr*) &global_system_variables.max_sort_length,
   (gptr*) &max_system_variables.max_sort_length, 0, GET_ULONG,
   REQUIRED_ARG, 1024, 4, 8192*1024L, 0, 1, 0},
  {"max_tmp_tables", OPT_MAX_TMP_TABLES,
   "Maximum number of temporary tables a client can keep open at a time.",
   (gptr*) &global_system_variables.max_tmp_tables,
   (gptr*) &max_system_variables.max_tmp_tables, 0, GET_ULONG,
   REQUIRED_ARG, 32, 1, ~0L, 0, 1, 0},
  {"max_user_connections", OPT_MAX_USER_CONNECTIONS,
   "The maximum number of active connections for a single user (0 = no limit).",
   (gptr*) &max_user_connections, (gptr*) &max_user_connections, 0, GET_ULONG,
   REQUIRED_ARG, 0, 1, ~0L, 0, 1, 0},
  {"max_write_lock_count", OPT_MAX_WRITE_LOCK_COUNT,
   "After this many write locks, allow some read locks to run in between.",
   (gptr*) &max_write_lock_count, (gptr*) &max_write_lock_count, 0, GET_ULONG,
   REQUIRED_ARG, ~0L, 1, ~0L, 0, 1, 0},
  {"bulk_insert_buffer_size", OPT_BULK_INSERT_BUFFER_SIZE,
   "Size of tree cache used in bulk insert optimisation. Note that this is a limit per thread!",
   (gptr*) &global_system_variables.bulk_insert_buff_size,
   (gptr*) &max_system_variables.bulk_insert_buff_size,
   0, GET_ULONG, REQUIRED_ARG, 8192*1024, 0, ~0L, 0, 1, 0},
  {"myisam_block_size", OPT_MYISAM_BLOCK_SIZE,
   "Block size to be used for MyISAM index pages.",
   (gptr*) &opt_myisam_block_size,
   (gptr*) &opt_myisam_block_size, 0, GET_ULONG, REQUIRED_ARG,
   MI_KEY_BLOCK_LENGTH, MI_MIN_KEY_BLOCK_LENGTH, MI_MAX_KEY_BLOCK_LENGTH,
   0, MI_MIN_KEY_BLOCK_LENGTH, 0},
  {"myisam_max_extra_sort_file_size", OPT_MYISAM_MAX_EXTRA_SORT_FILE_SIZE,
   "Used to help MySQL to decide when to use the slow but safe key cache index create method.",
   (gptr*) &global_system_variables.myisam_max_extra_sort_file_size,
   (gptr*) &max_system_variables.myisam_max_extra_sort_file_size,
   0, GET_ULL, REQUIRED_ARG, (ulonglong) MI_MAX_TEMP_LENGTH,
   0, (ulonglong) MAX_FILE_SIZE, 0, 1, 0},
  {"myisam_max_sort_file_size", OPT_MYISAM_MAX_SORT_FILE_SIZE,
   "Don't use the fast sort index method to created index if the temporary file would get bigger than this.",
   (gptr*) &global_system_variables.myisam_max_sort_file_size,
   (gptr*) &max_system_variables.myisam_max_sort_file_size, 0,
   GET_ULL, REQUIRED_ARG, (longlong) LONG_MAX, 0, (ulonglong) MAX_FILE_SIZE,
   0, 1024*1024, 0},
  {"myisam_repair_threads", OPT_MYISAM_REPAIR_THREADS,
   "Number of threads to use when repairing MyISAM tables. The value of 1 disables parallel repair.",
   (gptr*) &global_system_variables.myisam_repair_threads,
   (gptr*) &max_system_variables.myisam_repair_threads, 0,
   GET_ULONG, REQUIRED_ARG, 1, 1, ~0L, 0, 1, 0},
  {"myisam_sort_buffer_size", OPT_MYISAM_SORT_BUFFER_SIZE,
   "The buffer that is allocated when sorting the index when doing a REPAIR or when creating indexes with CREATE INDEX or ALTER TABLE.",
   (gptr*) &global_system_variables.myisam_sort_buff_size,
   (gptr*) &max_system_variables.myisam_sort_buff_size, 0,
   GET_ULONG, REQUIRED_ARG, 8192*1024, 4, ~0L, 0, 1, 0},
  {"net_buffer_length", OPT_NET_BUFFER_LENGTH,
   "Buffer length for TCP/IP and socket communication.",
   (gptr*) &global_system_variables.net_buffer_length,
   (gptr*) &max_system_variables.net_buffer_length, 0, GET_ULONG,
   REQUIRED_ARG, 16384, 1024, 1024*1024L, 0, 1024, 0},
  {"net_retry_count", OPT_NET_RETRY_COUNT,
   "If a read on a communication port is interrupted, retry this many times before giving up.",
   (gptr*) &global_system_variables.net_retry_count,
   (gptr*) &max_system_variables.net_retry_count,0,
   GET_ULONG, REQUIRED_ARG, MYSQLD_NET_RETRY_COUNT, 1, ~0L, 0, 1, 0},
  {"net_read_timeout", OPT_NET_READ_TIMEOUT,
   "Number of seconds to wait for more data from a connection before aborting the read.",
   (gptr*) &global_system_variables.net_read_timeout,
   (gptr*) &max_system_variables.net_read_timeout, 0, GET_ULONG,
   REQUIRED_ARG, NET_READ_TIMEOUT, 1, LONG_TIMEOUT, 0, 1, 0},
  {"net_write_timeout", OPT_NET_WRITE_TIMEOUT,
   "Number of seconds to wait for a block to be written to a connection  before aborting the write.",
   (gptr*) &global_system_variables.net_write_timeout,
   (gptr*) &max_system_variables.net_write_timeout, 0, GET_ULONG,
   REQUIRED_ARG, NET_WRITE_TIMEOUT, 1, LONG_TIMEOUT, 0, 1, 0},
  {"open_files_limit", OPT_OPEN_FILES_LIMIT,
   "If this is not 0, then mysqld will use this value to reserve file descriptors to use with setrlimit(). If this value is 0 then mysqld will reserve max_connections*5 or max_connections + table_cache*2 (whichever is larger) number of files.",
   (gptr*) &open_files_limit, (gptr*) &open_files_limit, 0, GET_ULONG,
   REQUIRED_ARG, 0, 0, 65535, 0, 1, 0},
   {"preload_buffer_size", OPT_PRELOAD_BUFFER_SIZE,
    "The size of the buffer that is allocated when preloading indexes",
    (gptr*) &global_system_variables.preload_buff_size,
    (gptr*) &max_system_variables.preload_buff_size, 0, GET_ULONG,
    REQUIRED_ARG, 32*1024L, 1024, 1024*1024*1024L, 0, 1, 0},
#ifdef HAVE_QUERY_CACHE
  {"query_cache_limit", OPT_QUERY_CACHE_LIMIT,
   "Don't cache results that are bigger than this.",
   (gptr*) &query_cache_limit, (gptr*) &query_cache_limit, 0, GET_ULONG,
   REQUIRED_ARG, 1024*1024L, 0, (longlong) ULONG_MAX, 0, 1, 0},
  {"query_cache_min_res_unit", OPT_QUERY_CACHE_MIN_RES_UNIT,
   "minimal size of unit in wich space for results is allocated (last unit will be trimed after writing all result data.",
   (gptr*) &query_cache_min_res_unit, (gptr*) &query_cache_min_res_unit,
   0, GET_ULONG, REQUIRED_ARG, QUERY_CACHE_MIN_RESULT_DATA_SIZE,
   0, (longlong) ULONG_MAX, 0, 1, 0},
#endif /*HAVE_QUERY_CACHE*/
  {"query_cache_size", OPT_QUERY_CACHE_SIZE,
   "The memory allocated to store results from old queries.",
   (gptr*) &query_cache_size, (gptr*) &query_cache_size, 0, GET_ULONG,
   REQUIRED_ARG, 0, 0, (longlong) ULONG_MAX, 0, 1024, 0},
#ifdef HAVE_QUERY_CACHE
  {"query_cache_type", OPT_QUERY_CACHE_TYPE,
   "0 = OFF = Don't cache or retrieve results. 1 = ON = Cache all results except SELECT SQL_NO_CACHE ... queries. 2 = DEMAND = Cache only SELECT SQL_CACHE ... queries.",
   (gptr*) &global_system_variables.query_cache_type,
   (gptr*) &max_system_variables.query_cache_type,
   0, GET_ULONG, REQUIRED_ARG, 1, 0, 2, 0, 1, 0},
#endif /*HAVE_QUERY_CACHE*/
  {"read_buffer_size", OPT_RECORD_BUFFER,
   "Each thread that does a sequential scan allocates a buffer of this size for each table it scans. If you do many sequential scans, you may want to increase this value.",
   (gptr*) &global_system_variables.read_buff_size,
   (gptr*) &max_system_variables.read_buff_size,0, GET_ULONG, REQUIRED_ARG,
   128*1024L, IO_SIZE*2+MALLOC_OVERHEAD, ~0L, MALLOC_OVERHEAD, IO_SIZE, 0},
  {"read_rnd_buffer_size", OPT_RECORD_RND_BUFFER,
   "When reading rows in sorted order after a sort, the rows are read through this buffer to avoid a disk seeks. If not set, then it's set to the value of record_buffer.",
   (gptr*) &global_system_variables.read_rnd_buff_size,
   (gptr*) &max_system_variables.read_rnd_buff_size, 0,
   GET_ULONG, REQUIRED_ARG, 256*1024L, IO_SIZE*2+MALLOC_OVERHEAD,
   ~0L, MALLOC_OVERHEAD, IO_SIZE, 0},
  {"record_buffer", OPT_RECORD_BUFFER,
   "Alias for read_buffer_size",
   (gptr*) &global_system_variables.read_buff_size,
   (gptr*) &max_system_variables.read_buff_size,0, GET_ULONG, REQUIRED_ARG,
   128*1024L, IO_SIZE*2+MALLOC_OVERHEAD, ~0L, MALLOC_OVERHEAD, IO_SIZE, 0},
#ifdef HAVE_REPLICATION
  {"relay_log_purge", OPT_RELAY_LOG_PURGE,
   "0 = do not purge relay logs. 1 = purge them as soon as they are no more needed.",
   (gptr*) &relay_log_purge,
   (gptr*) &relay_log_purge, 0, GET_BOOL, NO_ARG,
   1, 0, 1, 0, 1, 0},
  {"relay_log_space_limit", OPT_RELAY_LOG_SPACE_LIMIT,
   "Maximum space to use for all relay logs.",
   (gptr*) &relay_log_space_limit,
   (gptr*) &relay_log_space_limit, 0, GET_ULL, REQUIRED_ARG, 0L, 0L,
   (longlong) ULONG_MAX, 0, 1, 0},
  {"slave_compressed_protocol", OPT_SLAVE_COMPRESSED_PROTOCOL,
   "Use compression on master/slave protocol.",
   (gptr*) &opt_slave_compressed_protocol,
   (gptr*) &opt_slave_compressed_protocol,
   0, GET_BOOL, REQUIRED_ARG, 0, 0, 1, 0, 1, 0},
  {"slave_net_timeout", OPT_SLAVE_NET_TIMEOUT,
   "Number of seconds to wait for more data from a master/slave connection before aborting the read.",
   (gptr*) &slave_net_timeout, (gptr*) &slave_net_timeout, 0,
   GET_ULONG, REQUIRED_ARG, SLAVE_NET_TIMEOUT, 1, LONG_TIMEOUT, 0, 1, 0},
#endif /* HAVE_REPLICATION */
  {"read-only", OPT_READONLY,
   "Make all tables readonly, with the expections for replications (slave) threads and users with the SUPER privilege.",
   (gptr*) &opt_readonly,
   (gptr*) &opt_readonly,
   0, GET_BOOL, NO_ARG, 0, 0, 1, 0, 1, 0},
  {"slow_launch_time", OPT_SLOW_LAUNCH_TIME,
   "If creating the thread takes longer than this value (in seconds), the Slow_launch_threads counter will be incremented.",
   (gptr*) &slow_launch_time, (gptr*) &slow_launch_time, 0, GET_ULONG,
   REQUIRED_ARG, 2L, 0L, LONG_TIMEOUT, 0, 1, 0},
  {"sort_buffer_size", OPT_SORT_BUFFER,
   "Each thread that needs to do a sort allocates a buffer of this size.",
   (gptr*) &global_system_variables.sortbuff_size,
   (gptr*) &max_system_variables.sortbuff_size, 0, GET_ULONG, REQUIRED_ARG,
   MAX_SORT_MEMORY, MIN_SORT_MEMORY+MALLOC_OVERHEAD*2, ~0L, MALLOC_OVERHEAD,
   1, 0},
  {"table_cache", OPT_TABLE_CACHE,
   "The number of open tables for all threads.", (gptr*) &table_cache_size,
   (gptr*) &table_cache_size, 0, GET_ULONG, REQUIRED_ARG, 64, 1, 16384, 0, 1,
   0},
  {"thread_concurrency", OPT_THREAD_CONCURRENCY,
   "Permits the application to give the threads system a hint for the desired number of threads that should be run at the same time.",
   (gptr*) &concurrency, (gptr*) &concurrency, 0, GET_ULONG, REQUIRED_ARG,
   DEFAULT_CONCURRENCY, 1, 512, 0, 1, 0},
  {"thread_cache_size", OPT_THREAD_CACHE_SIZE,
   "How many threads we should keep in a cache for reuse.",
   (gptr*) &thread_cache_size, (gptr*) &thread_cache_size, 0, GET_ULONG,
   REQUIRED_ARG, 0, 0, 16384, 0, 1, 0},
  {"tmp_table_size", OPT_TMP_TABLE_SIZE,
   "If an in-memory temporary table exceeds this size, MySQL will automatically convert it to an on-disk MyISAM table.",
   (gptr*) &global_system_variables.tmp_table_size,
   (gptr*) &max_system_variables.tmp_table_size, 0, GET_ULONG,
   REQUIRED_ARG, 32*1024*1024L, 1024, ~0L, 0, 1, 0},
  {"thread_stack", OPT_THREAD_STACK,
   "The stack size for each thread.", (gptr*) &thread_stack,
   (gptr*) &thread_stack, 0, GET_ULONG, REQUIRED_ARG,DEFAULT_THREAD_STACK,
   1024*32, ~0L, 0, 1024, 0},
  {"wait_timeout", OPT_WAIT_TIMEOUT,
   "The number of seconds the server waits for activity on a connection before closing it.",
   (gptr*) &global_system_variables.net_wait_timeout,
   (gptr*) &max_system_variables.net_wait_timeout, 0, GET_ULONG,
   REQUIRED_ARG, NET_WAIT_TIMEOUT, 1, LONG_TIMEOUT, 0, 1, 0},
  {"expire_logs_days", OPT_EXPIRE_LOGS_DAYS,
   "Logs will be rotated after expire-log-days days. ",
   (gptr*) &expire_logs_days,
   (gptr*) &expire_logs_days, 0, GET_ULONG,
   REQUIRED_ARG, 0, 0, 99, 0, 1, 0},
  { "default-week-format", OPT_DEFAULT_WEEK_FORMAT,
    "The default week format used by WEEK() functions.",
    (gptr*) &global_system_variables.default_week_format,
    (gptr*) &max_system_variables.default_week_format,
    0, GET_ULONG, REQUIRED_ARG, 0, 0, 3L, 0, 1, 0},
  {0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
};

struct show_var_st status_vars[]= {
  {"Aborted_clients",          (char*) &aborted_threads,        SHOW_LONG},
  {"Aborted_connects",         (char*) &aborted_connects,       SHOW_LONG},
  {"Bytes_received",           (char*) &bytes_received,         SHOW_LONG},
  {"Bytes_sent",               (char*) &bytes_sent,             SHOW_LONG},
  {"Com_admin_commands",       (char*) &com_other,		SHOW_LONG},
  {"Com_alter_table",	       (char*) (com_stat+(uint) SQLCOM_ALTER_TABLE),SHOW_LONG},
  {"Com_alter_db",	       (char*) (com_stat+(uint) SQLCOM_ALTER_DB),SHOW_LONG},
  {"Com_analyze",	       (char*) (com_stat+(uint) SQLCOM_ANALYZE),SHOW_LONG},
  {"Com_backup_table",	       (char*) (com_stat+(uint) SQLCOM_BACKUP_TABLE),SHOW_LONG},
  {"Com_begin",		       (char*) (com_stat+(uint) SQLCOM_BEGIN),SHOW_LONG},
  {"Com_change_db",	       (char*) (com_stat+(uint) SQLCOM_CHANGE_DB),SHOW_LONG},
  {"Com_change_master",	       (char*) (com_stat+(uint) SQLCOM_CHANGE_MASTER),SHOW_LONG},
  {"Com_check",		       (char*) (com_stat+(uint) SQLCOM_CHECK),SHOW_LONG},
  {"Com_commit",	       (char*) (com_stat+(uint) SQLCOM_COMMIT),SHOW_LONG},
  {"Com_create_db",	       (char*) (com_stat+(uint) SQLCOM_CREATE_DB),SHOW_LONG},
  {"Com_create_function",      (char*) (com_stat+(uint) SQLCOM_CREATE_FUNCTION),SHOW_LONG},
  {"Com_create_index",	       (char*) (com_stat+(uint) SQLCOM_CREATE_INDEX),SHOW_LONG},
  {"Com_create_table",	       (char*) (com_stat+(uint) SQLCOM_CREATE_TABLE),SHOW_LONG},
  {"Com_delete",	       (char*) (com_stat+(uint) SQLCOM_DELETE),SHOW_LONG},
  {"Com_delete_multi",	       (char*) (com_stat+(uint) SQLCOM_DELETE_MULTI),SHOW_LONG},
  {"Com_do",                   (char*) (com_stat+(uint) SQLCOM_DO),SHOW_LONG},
  {"Com_drop_db",	       (char*) (com_stat+(uint) SQLCOM_DROP_DB),SHOW_LONG},
  {"Com_drop_function",	       (char*) (com_stat+(uint) SQLCOM_DROP_FUNCTION),SHOW_LONG},
  {"Com_drop_index",	       (char*) (com_stat+(uint) SQLCOM_DROP_INDEX),SHOW_LONG},
  {"Com_drop_table",	       (char*) (com_stat+(uint) SQLCOM_DROP_TABLE),SHOW_LONG},
  {"Com_flush",		       (char*) (com_stat+(uint) SQLCOM_FLUSH),SHOW_LONG},
  {"Com_grant",		       (char*) (com_stat+(uint) SQLCOM_GRANT),SHOW_LONG},
  {"Com_ha_close",	       (char*) (com_stat+(uint) SQLCOM_HA_CLOSE),SHOW_LONG},
  {"Com_ha_open",	       (char*) (com_stat+(uint) SQLCOM_HA_OPEN),SHOW_LONG},
  {"Com_ha_read",	       (char*) (com_stat+(uint) SQLCOM_HA_READ),SHOW_LONG},
  {"Com_help",                 (char*) (com_stat+(uint) SQLCOM_HELP),SHOW_LONG},
  {"Com_insert",	       (char*) (com_stat+(uint) SQLCOM_INSERT),SHOW_LONG},
  {"Com_insert_select",	       (char*) (com_stat+(uint) SQLCOM_INSERT_SELECT),SHOW_LONG},
  {"Com_kill",		       (char*) (com_stat+(uint) SQLCOM_KILL),SHOW_LONG},
  {"Com_load",		       (char*) (com_stat+(uint) SQLCOM_LOAD),SHOW_LONG},
  {"Com_load_master_data",     (char*) (com_stat+(uint) SQLCOM_LOAD_MASTER_DATA),SHOW_LONG},
  {"Com_load_master_table",    (char*) (com_stat+(uint) SQLCOM_LOAD_MASTER_TABLE),SHOW_LONG},
  {"Com_lock_tables",	       (char*) (com_stat+(uint) SQLCOM_LOCK_TABLES),SHOW_LONG},
  {"Com_optimize",	       (char*) (com_stat+(uint) SQLCOM_OPTIMIZE),SHOW_LONG},
  {"Com_purge",		       (char*) (com_stat+(uint) SQLCOM_PURGE),SHOW_LONG},
  {"Com_purge_before_date",    (char*) (com_stat+(uint) SQLCOM_PURGE_BEFORE),SHOW_LONG},
  {"Com_rename_table",	       (char*) (com_stat+(uint) SQLCOM_RENAME_TABLE),SHOW_LONG},
  {"Com_repair",	       (char*) (com_stat+(uint) SQLCOM_REPAIR),SHOW_LONG},
  {"Com_replace",	       (char*) (com_stat+(uint) SQLCOM_REPLACE),SHOW_LONG},
  {"Com_replace_select",       (char*) (com_stat+(uint) SQLCOM_REPLACE_SELECT),SHOW_LONG},
  {"Com_reset",		       (char*) (com_stat+(uint) SQLCOM_RESET),SHOW_LONG},
  {"Com_restore_table",	       (char*) (com_stat+(uint) SQLCOM_RESTORE_TABLE),SHOW_LONG},
  {"Com_revoke",	       (char*) (com_stat+(uint) SQLCOM_REVOKE),SHOW_LONG},
  {"Com_rollback",	       (char*) (com_stat+(uint) SQLCOM_ROLLBACK),SHOW_LONG},
  {"Com_select",	       (char*) (com_stat+(uint) SQLCOM_SELECT),SHOW_LONG},
  {"Com_set_option",	       (char*) (com_stat+(uint) SQLCOM_SET_OPTION),SHOW_LONG},
  {"Com_show_binlog_events",   (char*) (com_stat+(uint) SQLCOM_SHOW_BINLOG_EVENTS),SHOW_LONG},
  {"Com_show_binlogs",	       (char*) (com_stat+(uint) SQLCOM_SHOW_BINLOGS),SHOW_LONG},
  {"Com_show_charsets",	       (char*) (com_stat+(uint) SQLCOM_SHOW_CHARSETS),SHOW_LONG},
  {"Com_show_column_types",    (char*) (com_stat+(uint) SQLCOM_SHOW_COLUMN_TYPES),SHOW_LONG},
  {"Com_show_create_table",    (char*) (com_stat+(uint) SQLCOM_SHOW_CREATE),SHOW_LONG},
  {"Com_show_create_db",       (char*) (com_stat+(uint) SQLCOM_SHOW_CREATE_DB),SHOW_LONG},
  {"Com_show_databases",       (char*) (com_stat+(uint) SQLCOM_SHOW_DATABASES),SHOW_LONG},
  {"Com_show_errors",	       (char*) (com_stat+(uint) SQLCOM_SHOW_ERRORS),SHOW_LONG},
  {"Com_show_fields",	       (char*) (com_stat+(uint) SQLCOM_SHOW_FIELDS),SHOW_LONG},
  {"Com_show_grants",	       (char*) (com_stat+(uint) SQLCOM_SHOW_GRANTS),SHOW_LONG},
  {"Com_show_keys",	       (char*) (com_stat+(uint) SQLCOM_SHOW_KEYS),SHOW_LONG},
  {"Com_show_logs",	       (char*) (com_stat+(uint) SQLCOM_SHOW_LOGS),SHOW_LONG},
  {"Com_show_master_status",   (char*) (com_stat+(uint) SQLCOM_SHOW_MASTER_STAT),SHOW_LONG},
  {"Com_show_new_master",      (char*) (com_stat+(uint) SQLCOM_SHOW_NEW_MASTER),SHOW_LONG},
  {"Com_show_open_tables",     (char*) (com_stat+(uint) SQLCOM_SHOW_OPEN_TABLES),SHOW_LONG},
  {"Com_show_privileges",      (char*) (com_stat+(uint) SQLCOM_SHOW_PRIVILEGES),SHOW_LONG},
  {"Com_show_processlist",     (char*) (com_stat+(uint) SQLCOM_SHOW_PROCESSLIST),SHOW_LONG},
  {"Com_show_slave_hosts",     (char*) (com_stat+(uint) SQLCOM_SHOW_SLAVE_HOSTS),SHOW_LONG},
  {"Com_show_slave_status",    (char*) (com_stat+(uint) SQLCOM_SHOW_SLAVE_STAT),SHOW_LONG},
  {"Com_show_status",	       (char*) (com_stat+(uint) SQLCOM_SHOW_STATUS),SHOW_LONG},
  {"Com_show_innodb_status",   (char*) (com_stat+(uint) SQLCOM_SHOW_INNODB_STATUS),SHOW_LONG},
  {"Com_show_tables",	       (char*) (com_stat+(uint) SQLCOM_SHOW_TABLES),SHOW_LONG},
  {"Com_show_table_types",     (char*) (com_stat+(uint) SQLCOM_SHOW_TABLE_TYPES),SHOW_LONG},
  {"Com_show_variables",       (char*) (com_stat+(uint) SQLCOM_SHOW_VARIABLES),SHOW_LONG},
  {"Com_show_warnings",        (char*) (com_stat+(uint) SQLCOM_SHOW_WARNS),SHOW_LONG},
  {"Com_slave_start",	       (char*) (com_stat+(uint) SQLCOM_SLAVE_START),SHOW_LONG},
  {"Com_slave_stop",	       (char*) (com_stat+(uint) SQLCOM_SLAVE_STOP),SHOW_LONG},
  {"Com_truncate",	       (char*) (com_stat+(uint) SQLCOM_TRUNCATE),SHOW_LONG},
  {"Com_unlock_tables",	       (char*) (com_stat+(uint) SQLCOM_UNLOCK_TABLES),SHOW_LONG},
  {"Com_update",	       (char*) (com_stat+(uint) SQLCOM_UPDATE),SHOW_LONG},
  {"Com_update_multi",	       (char*) (com_stat+(uint) SQLCOM_UPDATE_MULTI),SHOW_LONG},
  {"Connections",              (char*) &thread_id,              SHOW_LONG_CONST},
  {"Created_tmp_disk_tables",  (char*) &created_tmp_disk_tables,SHOW_LONG},
  {"Created_tmp_tables",       (char*) &created_tmp_tables,     SHOW_LONG},
  {"Created_tmp_files",	       (char*) &my_tmp_file_created,	SHOW_LONG},
  {"Delayed_insert_threads",   (char*) &delayed_insert_threads, SHOW_LONG_CONST},
  {"Delayed_writes",           (char*) &delayed_insert_writes,  SHOW_LONG},
  {"Delayed_errors",           (char*) &delayed_insert_errors,  SHOW_LONG},
  {"Flush_commands",           (char*) &refresh_version,        SHOW_LONG_CONST},
  {"Handler_commit",           (char*) &ha_commit_count,        SHOW_LONG},
  {"Handler_delete",           (char*) &ha_delete_count,        SHOW_LONG},
  {"Handler_read_first",       (char*) &ha_read_first_count,    SHOW_LONG},
  {"Handler_read_key",         (char*) &ha_read_key_count,      SHOW_LONG},
  {"Handler_read_next",        (char*) &ha_read_next_count,     SHOW_LONG},
  {"Handler_read_prev",        (char*) &ha_read_prev_count,     SHOW_LONG},
  {"Handler_read_rnd",         (char*) &ha_read_rnd_count,      SHOW_LONG},
  {"Handler_read_rnd_next",    (char*) &ha_read_rnd_next_count, SHOW_LONG},
  {"Handler_rollback",         (char*) &ha_rollback_count,      SHOW_LONG},
  {"Handler_update",           (char*) &ha_update_count,        SHOW_LONG},
  {"Handler_write",            (char*) &ha_write_count,         SHOW_LONG},
  {"Key_blocks_used",          (char*) &my_blocks_used,        SHOW_LONG_CONST},
  {"Key_read_requests",        (char*) &my_cache_r_requests,   SHOW_LONG},
  {"Key_reads",                (char*) &my_cache_read,         SHOW_LONG},
  {"Key_write_requests",       (char*) &my_cache_w_requests,   SHOW_LONG},
  {"Key_writes",               (char*) &my_cache_write,        SHOW_LONG},
  {"Max_used_connections",     (char*) &max_used_connections,  SHOW_LONG},
  {"Not_flushed_key_blocks",   (char*) &my_blocks_changed,     SHOW_LONG_CONST},
  {"Not_flushed_delayed_rows", (char*) &delayed_rows_in_use,    SHOW_LONG_CONST},
  {"Open_tables",              (char*) 0,                       SHOW_OPENTABLES},
  {"Open_files",               (char*) &my_file_opened,         SHOW_LONG_CONST},
  {"Open_streams",             (char*) &my_stream_opened,       SHOW_LONG_CONST},
  {"Opened_tables",            (char*) &opened_tables,          SHOW_LONG},
  {"Questions",                (char*) 0,                       SHOW_QUESTION},
#ifdef HAVE_QUERY_CACHE
  {"Qcache_queries_in_cache",  (char*) &query_cache.queries_in_cache, SHOW_LONG_CONST},
  {"Qcache_inserts",           (char*) &query_cache.inserts,    SHOW_LONG},
  {"Qcache_hits",              (char*) &query_cache.hits,       SHOW_LONG},
  {"Qcache_lowmem_prunes",     (char*) &query_cache.lowmem_prunes, SHOW_LONG},
  {"Qcache_not_cached",        (char*) &query_cache.refused,    SHOW_LONG},
  {"Qcache_free_memory",       (char*) &query_cache.free_memory,
   SHOW_LONG_CONST},
  {"Qcache_free_blocks",       (char*) &query_cache.free_memory_blocks,
   SHOW_LONG_CONST},
  {"Qcache_total_blocks",      (char*) &query_cache.total_blocks,
   SHOW_LONG_CONST},
#endif /*HAVE_QUERY_CACHE*/
  {"Rpl_status",               (char*) 0,                 SHOW_RPL_STATUS},
  {"Select_full_join",         (char*) &select_full_join_count, SHOW_LONG},
  {"Select_full_range_join",   (char*) &select_full_range_join_count, SHOW_LONG},
  {"Select_range",             (char*) &select_range_count, 	SHOW_LONG},
  {"Select_range_check",       (char*) &select_range_check_count, SHOW_LONG},
  {"Select_scan",	       (char*) &select_scan_count,	SHOW_LONG},
  {"Slave_open_temp_tables",   (char*) &slave_open_temp_tables, SHOW_LONG},
  {"Slave_running",            (char*) 0, SHOW_SLAVE_RUNNING},
  {"Slow_launch_threads",      (char*) &slow_launch_threads,    SHOW_LONG},
  {"Slow_queries",             (char*) &long_query_count,       SHOW_LONG},
  {"Sort_merge_passes",	       (char*) &filesort_merge_passes,  SHOW_LONG},
  {"Sort_range",	       (char*) &filesort_range_count,   SHOW_LONG},
  {"Sort_rows",		       (char*) &filesort_rows,	        SHOW_LONG},
  {"Sort_scan",		       (char*) &filesort_scan_count,    SHOW_LONG},
#ifdef HAVE_OPENSSL
  {"Ssl_accepts",              (char*) 0,  	SHOW_SSL_CTX_SESS_ACCEPT},
  {"Ssl_finished_accepts",     (char*) 0,  	SHOW_SSL_CTX_SESS_ACCEPT_GOOD},
  {"Ssl_finished_connects",    (char*) 0,  	SHOW_SSL_CTX_SESS_CONNECT_GOOD},
  {"Ssl_accept_renegotiates",  (char*) 0, 	SHOW_SSL_CTX_SESS_ACCEPT_RENEGOTIATE},
  {"Ssl_connect_renegotiates", (char*) 0, 	SHOW_SSL_CTX_SESS_CONNECT_RENEGOTIATE},
  {"Ssl_callback_cache_hits",  (char*) 0,	SHOW_SSL_CTX_SESS_CB_HITS},
  {"Ssl_session_cache_hits",   (char*) 0,	SHOW_SSL_CTX_SESS_HITS},
  {"Ssl_session_cache_misses", (char*) 0,	SHOW_SSL_CTX_SESS_MISSES},
  {"Ssl_session_cache_timeouts", (char*) 0,	SHOW_SSL_CTX_SESS_TIMEOUTS},
  {"Ssl_used_session_cache_entries",(char*) 0,	SHOW_SSL_CTX_SESS_NUMBER},
  {"Ssl_client_connects",      (char*) 0,	SHOW_SSL_CTX_SESS_CONNECT},
  {"Ssl_session_cache_overflows", (char*) 0,	SHOW_SSL_CTX_SESS_CACHE_FULL},
  {"Ssl_session_cache_size",   (char*) 0,	SHOW_SSL_CTX_SESS_GET_CACHE_SIZE},
  {"Ssl_session_cache_mode",   (char*) 0,	SHOW_SSL_CTX_GET_SESSION_CACHE_MODE},
  {"Ssl_sessions_reused",      (char*) 0,	SHOW_SSL_SESSION_REUSED},
  {"Ssl_ctx_verify_mode",      (char*) 0,	SHOW_SSL_CTX_GET_VERIFY_MODE},
  {"Ssl_ctx_verify_depth",     (char*) 0,	SHOW_SSL_CTX_GET_VERIFY_DEPTH},
  {"Ssl_verify_mode",          (char*) 0,	SHOW_SSL_GET_VERIFY_MODE},
  {"Ssl_verify_depth",         (char*) 0,	SHOW_SSL_GET_VERIFY_DEPTH},
  {"Ssl_version",   	       (char*) 0,  	SHOW_SSL_GET_VERSION},
  {"Ssl_cipher",               (char*) 0,  	SHOW_SSL_GET_CIPHER},
  {"Ssl_cipher_list",          (char*) 0,  	SHOW_SSL_GET_CIPHER_LIST},
  {"Ssl_default_timeout",      (char*) 0,  	SHOW_SSL_GET_DEFAULT_TIMEOUT},
#endif /* HAVE_OPENSSL */
  {"Table_locks_immediate",    (char*) &locks_immediate,        SHOW_LONG},
  {"Table_locks_waited",       (char*) &locks_waited,           SHOW_LONG},
  {"Threads_cached",           (char*) &cached_thread_count,    SHOW_LONG_CONST},
  {"Threads_created",	       (char*) &thread_created,		SHOW_LONG_CONST},
  {"Threads_connected",        (char*) &thread_count,           SHOW_INT_CONST},
  {"Threads_running",          (char*) &thread_running,         SHOW_INT_CONST},
  {"Uptime",                   (char*) 0,                       SHOW_STARTTIME},
  {NullS, NullS, SHOW_LONG}
};

static void print_version(void)
{
  printf("%s  Ver %s for %s on %s\n",my_progname,
	 server_version,SYSTEM_TYPE,MACHINE_TYPE);
}

static void use_help(void)
{
  print_version();
  printf("Use '--help' or '--no-defaults --help' for a list of available options\n");
}

static void usage(void)
{
  if (!(default_charset_info= get_charset_by_csname(default_character_set_name,
					           MY_CS_PRIMARY,
						   MYF(MY_WME))))
    exit(1);
  if (!default_collation_name)
    default_collation_name= (char*) default_charset_info->name;
  print_version();
  puts("\
Copyright (C) 2000 MySQL AB, by Monty and others\n\
This software comes with ABSOLUTELY NO WARRANTY. This is free software,\n\
and you are welcome to modify and redistribute it under the GPL license\n\
Starts the MySQL server\n");

  printf("Usage: %s [OPTIONS]\n", my_progname);
#ifdef __WIN__
  puts("NT and Win32 specific options:\n\
  --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)\
");
  puts("");
#endif
  print_defaults(MYSQL_CONFIG_NAME,load_default_groups);
  puts("");
  fix_paths();
  set_ports();

  my_print_help(my_long_options);
  my_print_variables(my_long_options);

  puts("\n\
To see what values a running MySQL server is using, type\n\
'mysqladmin variables' instead of 'mysqld --help'.");
}


/*
  Initialize all MySQL global variables to default values

  SYNOPSIS
    mysql_init_variables()

  NOTES
    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.

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

static void mysql_init_variables(void)
{
  /* Things reset to zero */
  opt_skip_slave_start= opt_reckless_slave = 0;
  mysql_home[0]= pidfile_name[0]= log_error_file[0]= 0;
  opt_log= opt_update_log= opt_bin_log= opt_slow_log= 0;
  opt_disable_networking= opt_skip_show_db=0;
  opt_logname= opt_update_logname= opt_binlog_index_name= opt_slow_logname=0;
  opt_bootstrap= opt_myisam_log= use_old_passwords= 0;
  mqh_used= 0;
  segfaulted= kill_in_progress= 0;
  cleanup_done= 0;
  defaults_argv= 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;
  com_other= 0;
  cached_thread_count= 0;
  bytes_sent= bytes_received= 0;
  opt_endinfo= using_udf_functions= 0;
  opt_using_transactions= using_update_log= 0;
  abort_loop= select_thread_in_use= signal_thread_in_use= 0;
  ready_to_exit= shutdown_in_progress= grant_option= 0;
  long_query_count= aborted_threads= aborted_connects= 0;
  delayed_insert_threads= delayed_insert_writes= delayed_rows_in_use= 0;
  delayed_insert_errors= thread_created= 0;
  filesort_rows= filesort_range_count= filesort_scan_count= 0;
  filesort_merge_passes= select_range_check_count= select_range_count= 0;
  select_scan_count= select_full_range_join_count= select_full_join_count= 0;
  specialflag= opened_tables= created_tmp_tables= created_tmp_disk_tables= 0;
  max_used_connections= slow_launch_threads = 0;
  max_sort_char= 0;
  mysqld_user= mysqld_chroot= opt_init_file= opt_bin_logname = 0;
  errmesg= 0;
  mysqld_unix_port= opt_mysql_tmpdir= my_bind_addr_str= NullS;
  bzero((gptr) &mysql_tmpdir_list, sizeof(mysql_tmpdir_list));
  bzero((gptr) &com_stat, sizeof(com_stat));

  /* 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;

  /* Things with default values that are not zero */
  delay_key_write_options= (uint) DELAY_KEY_WRITE_ON;
  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;
  language_ptr= language;
  mysql_data_home= mysql_real_data_home;
  thd_startup_options= (OPTION_UPDATE_LOG | OPTION_AUTO_IS_NULL |
			OPTION_BIN_LOG | OPTION_QUOTE_SHOW_CREATE);
  protocol_version= PROTOCOL_VERSION;
  what_to_log= ~ (1L << (uint) COM_TIME);
  refresh_version= flush_version= 1L;	/* Increments on each reload */
  thread_id= 1L;
  strmov(server_version, MYSQL_SERVER_VERSION);
  myisam_recover_options_str= sql_mode_str= "OFF";
  my_bind_addr = htonl(INADDR_ANY);
  threads.empty();
  thread_cache.empty();
  key_caches.empty();
  if (!get_or_create_key_cache("default", 7))
    exit(1);

  /* Initialize structures that is used when processing options */
  replicate_rewrite_db.empty();
  replicate_do_db.empty();
  replicate_ignore_db.empty();
  binlog_do_db.empty();
  binlog_ignore_db.empty();

  /* Set directory paths */
  strmake(language, LANGUAGE, sizeof(language)-1);
  strmake(mysql_real_data_home, get_relative_path(DATADIR),
	  sizeof(mysql_real_data_home)-1);
  mysql_data_home_buff[0]=FN_CURLIB;	// all paths are relative from here
  mysql_data_home_buff[1]=0;

  /* Replication parameters */
  master_user= (char*) "test";
  master_password= master_host= 0;
  master_info_file= (char*) "master.info",
    relay_log_info_file= (char*) "relay-log.info",
    master_ssl_key= master_ssl_cert= master_ssl_capath= master_ssl_cipher= 0;
  report_user= report_password = report_host= 0;	/* TO BE DELETED */
  opt_relay_logname= opt_relaylog_index_name= 0;

  /* Variables in libraries */
  charsets_dir= 0;
  default_character_set_name= (char*) MYSQL_DEFAULT_CHARSET_NAME;
  default_collation_name= (char*) MYSQL_DEFAULT_COLLATION_NAME;
  sys_charset_system.value= (char*) system_charset_info->csname;


  /* Set default values for some option variables */
  global_system_variables.character_set_server= default_charset_info;
  global_system_variables.character_set_database= default_charset_info;
  global_system_variables.character_set_results= default_charset_info;
  global_system_variables.character_set_client= default_charset_info;
  global_system_variables.collation_connection= default_charset_info;
  global_system_variables.table_type=   DB_TYPE_MYISAM;
  global_system_variables.tx_isolation= ISO_REPEATABLE_READ;
  global_system_variables.select_limit= (ulonglong) HA_POS_ERROR;
  max_system_variables.select_limit=    (ulonglong) HA_POS_ERROR;
  global_system_variables.max_join_size= (ulonglong) HA_POS_ERROR;
  max_system_variables.max_join_size=   (ulonglong) HA_POS_ERROR;

  /* 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);
#ifdef HAVE_BERKELEY_DB
  have_berkeley_db= SHOW_OPTION_YES;
#else
  have_berkeley_db= SHOW_OPTION_NO;
#endif
#ifdef HAVE_INNOBASE_DB
  have_innodb=SHOW_OPTION_YES;
#else
  have_innodb=SHOW_OPTION_NO;
#endif
#ifdef HAVE_ISAM
  have_isam=SHOW_OPTION_YES;
#else
  have_isam=SHOW_OPTION_NO;
#endif
#ifdef USE_RAID
  have_raid=SHOW_OPTION_YES;
#else
  have_raid=SHOW_OPTION_NO;
#endif
#ifdef HAVE_OPENSSL
  have_openssl=SHOW_OPTION_YES;
#else
  have_openssl=SHOW_OPTION_NO;
#endif
#ifdef HAVE_BROKEN_REALPATH
  have_symlink=SHOW_OPTION_NO;
#else
  have_symlink=SHOW_OPTION_YES;
#endif
#ifdef HAVE_QUERY_CACHE
  have_query_cache=SHOW_OPTION_YES;
#else
  have_query_cache=SHOW_OPTION_NO;
#endif
#ifdef HAVE_CRYPT
  have_crypt=SHOW_OPTION_YES;
#else
  have_crypt=SHOW_OPTION_NO;
#endif
#ifdef HAVE_COMPRESS
  SHOW_COMP_OPTION have_compress= SHOW_OPTION_YES;
#else
  SHOW_COMP_OPTION have_compress= SHOW_OPTION_NO;
#endif
#ifdef HAVE_LIBWRAP
  libwrapName= NullS;
#endif
#ifdef HAVE_OPENSSL
  des_key_file = 0;
  ssl_acceptor_fd= 0;
#endif
#ifdef HAVE_SMEM
  shared_memory_base_name= default_shared_memory_base_name;
#endif
#if !defined(my_pthread_setprio) && !defined(HAVE_PTHREAD_SETSCHEDPARAM)
  opt_specialflag |= SPECIAL_NO_PRIOR;
#endif

#if defined(__WIN__) || defined(__NETWARE__)
  /* Allow Win32 and NetWare users to move MySQL anywhere */
  {
    char prg_dev[LIBLEN];
    my_path(prg_dev,my_progname,"mysql/bin");
    strcat(prg_dev,"/../");			// Remove 'bin' to get base dir
    cleanup_dirname(mysql_home,prg_dev);
  }
#else
  const char *tmpenv;
  if (!(tmpenv = getenv("MY_BASEDIR_VERSION")))
    tmpenv = DEFAULT_MYSQL_HOME;
  (void) strmake(mysql_home, tmpenv, sizeof(mysql_home)-1);
#endif
}


extern "C" my_bool
get_one_option(int optid, const struct my_option *opt __attribute__((unused)),
	       char *argument)
{
  switch(optid) {
  case '#':
#ifndef DBUG_OFF
    DBUG_PUSH(argument ? argument : default_dbug_option);
#endif
    opt_endinfo=1;				/* unireg: memory allocation */
    break;
  case 'a':
    global_system_variables.sql_mode= fix_sql_mode(MODE_ANSI);
    global_system_variables.tx_isolation= ISO_SERIALIZABLE;
    break;
  case 'b':
    strmake(mysql_home,argument,sizeof(mysql_home)-1);
    break;
  case 'C':
    default_collation_name= 0;
    break;
  case 'l':
    opt_log=1;
    break;
  case 'h':
    strmake(mysql_real_data_home,argument, sizeof(mysql_real_data_home)-1);
    /* Correct pointer set by my_getopt (for embedded library) */
    mysql_data_home= mysql_real_data_home;
    break;
  case 'u':
    if (!mysqld_user)
      mysqld_user= argument;
    else
      fprintf(stderr, "Warning: Ignoring user change to '%s' because the user was set to '%s' earlier on the command line\n", argument, mysqld_user);
    break;
  case 'L':
    strmake(language, argument, sizeof(language)-1);
    break;
  case 'o':
    protocol_version=PROTOCOL_VERSION-1;
    break;
#ifdef HAVE_REPLICATION
  case OPT_SLAVE_SKIP_ERRORS:
    init_slave_skip_errors(argument);
    break;
#endif
  case OPT_SAFEMALLOC_MEM_LIMIT:
#if !defined(DBUG_OFF) && defined(SAFEMALLOC)
    safemalloc_mem_limit = atoi(argument);
#endif
    break;
#ifdef EMBEDDED_LIBRARY
  case OPT_MAX_ALLOWED_PACKET:
    max_allowed_packet= atoi(argument);
    break;
  case OPT_NET_BUFFER_LENGTH:
    net_buffer_length=  atoi(argument);
    break;
#endif
#include <sslopt-case.h>
  case 'v':
  case 'V':
    print_version();
    exit(0);
  case 'I':
  case '?':
    usage();
    exit(0);
  case 'T':
    test_flags= argument ? (uint) atoi(argument) : 0;
    test_flags&= ~TEST_NO_THREADS;
    opt_endinfo=1;
    break;
  case (int) OPT_BIG_TABLES:
    thd_startup_options|=OPTION_BIG_TABLES;
    break;
  case (int) OPT_ISAM_LOG:
    opt_myisam_log=1;
    break;
  case (int) OPT_UPDATE_LOG:
    opt_update_log=1;
    break;
  case (int) OPT_BIN_LOG:
    opt_bin_log=1;
    break;
  case (int) OPT_ERROR_LOG_FILE:
    opt_error_log= 1;
    break;
#ifdef HAVE_REPLICATION
  case (int) OPT_INIT_RPL_ROLE:
  {
    int role;
    if ((role=find_type(argument, &rpl_role_typelib, 2)) <= 0)
    {
      fprintf(stderr, "Unknown replication role: %s\n", argument);
      exit(1);
    }
    rpl_status = (role == 1) ?  RPL_AUTH_MASTER : RPL_IDLE_SLAVE;
    break;
  }
  case (int)OPT_REPLICATE_IGNORE_DB:
  {
    i_string *db = new i_string(argument);
    replicate_ignore_db.push_back(db);
    break;
  }
  case (int)OPT_REPLICATE_DO_DB:
  {
    i_string *db = new i_string(argument);
    replicate_do_db.push_back(db);
    break;
  }
  case (int)OPT_REPLICATE_REWRITE_DB:
  {
    char* key = argument,*p, *val;

    if (!(p= strstr(argument, "->")))
    {
      fprintf(stderr,
	      "Bad syntax in replicate-rewrite-db - missing '->'!\n");
      exit(1);
    }
    val= p--;
    while (my_isspace(mysqld_charset, *p) && p > argument)
      *p-- = 0;
    if (p == argument)
    {
      fprintf(stderr,
	      "Bad syntax in replicate-rewrite-db - empty FROM db!\n");
      exit(1);
    }
    *val= 0;
    val+= 2;
    while (*val && my_isspace(mysqld_charset, *val))
      *val++;
    if (!*val)
    {
      fprintf(stderr,
	      "Bad syntax in replicate-rewrite-db - empty TO db!\n");
      exit(1);
    }

    i_string_pair *db_pair = new i_string_pair(key, val);
    replicate_rewrite_db.push_back(db_pair);
    break;
  }

  case (int)OPT_BINLOG_IGNORE_DB:
  {
    i_string *db = new i_string(argument);
    binlog_ignore_db.push_back(db);
    break;
  }
  case (int)OPT_BINLOG_DO_DB:
  {
    i_string *db = new i_string(argument);
    binlog_do_db.push_back(db);
    break;
  }
  case (int)OPT_REPLICATE_DO_TABLE:
  {
    if (!do_table_inited)
      init_table_rule_hash(&replicate_do_table, &do_table_inited);
    if (add_table_rule(&replicate_do_table, argument))
    {
      fprintf(stderr, "Could not add do table rule '%s'!\n", argument);
      exit(1);
    }
    table_rules_on = 1;
    break;
  }
  case (int)OPT_REPLICATE_WILD_DO_TABLE:
  {
    if (!wild_do_table_inited)
      init_table_rule_array(&replicate_wild_do_table,
			    &wild_do_table_inited);
    if (add_wild_table_rule(&replicate_wild_do_table, argument))
    {
      fprintf(stderr, "Could not add do table rule '%s'!\n", argument);
      exit(1);
    }
    table_rules_on = 1;
    break;
  }
  case (int)OPT_REPLICATE_WILD_IGNORE_TABLE:
  {
    if (!wild_ignore_table_inited)
      init_table_rule_array(&replicate_wild_ignore_table,
			    &wild_ignore_table_inited);
    if (add_wild_table_rule(&replicate_wild_ignore_table, argument))
    {
      fprintf(stderr, "Could not add ignore table rule '%s'!\n", argument);
      exit(1);
    }
    table_rules_on = 1;
    break;
  }
  case (int)OPT_REPLICATE_IGNORE_TABLE:
  {
    if (!ignore_table_inited)
      init_table_rule_hash(&replicate_ignore_table, &ignore_table_inited);
    if (add_table_rule(&replicate_ignore_table, argument))
    {
      fprintf(stderr, "Could not add ignore table rule '%s'!\n", argument);
      exit(1);
    }
    table_rules_on = 1;
    break;
  }
  case (int)OPT_RECKLESS_SLAVE:
    opt_reckless_slave = 1;
    init_slave_skip_errors("all");
    break;
#endif /* HAVE_REPLICATION */
  case (int) OPT_SLOW_QUERY_LOG:
    opt_slow_log=1;
    break;
  case (int) OPT_SKIP_NEW:
    opt_specialflag|= SPECIAL_NO_NEW_FUNC;
    delay_key_write_options= (uint) DELAY_KEY_WRITE_NONE;
    myisam_concurrent_insert=0;
    myisam_recover_options= HA_RECOVER_NONE;
    my_use_symdir=0;
    ha_open_options&= ~(HA_OPEN_ABORT_IF_CRASHED | HA_OPEN_DELAY_KEY_WRITE);
#ifdef HAVE_QUERY_CACHE
    query_cache_size=0;
#endif
    break;
  case (int) OPT_SAFE:
    opt_specialflag|= SPECIAL_SAFE_MODE;
    delay_key_write_options= (uint) DELAY_KEY_WRITE_NONE;
    myisam_recover_options= HA_RECOVER_DEFAULT;
    ha_open_options&= ~(HA_OPEN_DELAY_KEY_WRITE);
    break;
  case (int) OPT_SKIP_PRIOR:
    opt_specialflag|= SPECIAL_NO_PRIOR;
    break;
  case (int) OPT_SKIP_LOCK:
    opt_external_locking=0;
    break;
  case (int) OPT_SKIP_HOST_CACHE:
    opt_specialflag|= SPECIAL_NO_HOST_CACHE;
    break;
  case (int) OPT_SKIP_RESOLVE:
    opt_specialflag|=SPECIAL_NO_RESOLVE;
    break;
  case (int) OPT_LONG_FORMAT:
    opt_specialflag|=SPECIAL_LONG_LOG_FORMAT;
    break;
  case (int) OPT_SKIP_NETWORKING:
    opt_disable_networking=1;
    mysqld_port=0;
    break;
  case (int) OPT_SKIP_SHOW_DB:
    opt_skip_show_db=1;
    opt_specialflag|=SPECIAL_SKIP_SHOW_DB;
    break;
#ifdef ONE_THREAD
  case (int) OPT_ONE_THREAD:
    test_flags |= TEST_NO_THREADS;
#endif
    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_SKIP_SYMLINKS:
    my_use_symdir=0;
    break;
  case (int) OPT_BIND_ADDRESS:
    if (argument && my_isdigit(mysqld_charset, argument[0]))
    {
      my_bind_addr = (ulong) inet_addr(argument);
    }
    else
    {
      struct hostent *ent;
      if (argument || argument[0])
	ent=gethostbyname(argument);
      else
      {
	char myhostname[255];
	if (gethostname(myhostname,sizeof(myhostname)) < 0)
	{
	  sql_perror("Can't start server: cannot get my own hostname!");
	  exit(1);
	}
	ent=gethostbyname(myhostname);
      }
      if (!ent)
      {
	sql_perror("Can't start server: cannot resolve hostname!");
	exit(1);
      }
      my_bind_addr = (ulong) ((in_addr*)ent->h_addr_list[0])->s_addr;
    }
    break;
  case (int) OPT_PID_FILE:
    strmake(pidfile_name, argument, sizeof(pidfile_name)-1);
    break;
#ifdef __WIN__
  case (int) OPT_STANDALONE:		/* Dummy option for NT */
    break;
#endif
  case OPT_CONSOLE:
    if (opt_console)
      opt_error_log= 0;			// Force logs to stdout
    break;
  case (int) OPT_FLUSH:
#ifdef HAVE_ISAM
    nisam_flush=1;
#endif
    myisam_flush=1;
    flush_time=0;			// No auto flush
    break;
  case OPT_LOW_PRIORITY_UPDATES:
    thr_upgraded_concurrent_insert_lock= TL_WRITE_LOW_PRIORITY;
    global_system_variables.low_priority_updates=1;
    break;
  case OPT_BOOTSTRAP:
    opt_noacl=opt_bootstrap=1;
    break;
  case OPT_TABLE_TYPE:
  {
    int type;
    if ((type=find_type(argument, &ha_table_typelib, 2)) <= 0)
    {
      fprintf(stderr,"Unknown table type: %s\n",argument);
      exit(1);
    }
    global_system_variables.table_type= type-1;
    break;
  }
  case OPT_SERVER_ID:
    server_id_supplied = 1;
    break;
  case OPT_DELAY_KEY_WRITE_ALL:
    if (argument != disabled_my_option)
      argument= (char*) "ALL";
    /* Fall through */
  case OPT_DELAY_KEY_WRITE:
    if (argument == disabled_my_option)
      delay_key_write_options= (uint) DELAY_KEY_WRITE_NONE;
    else if (! argument)
      delay_key_write_options= (uint) DELAY_KEY_WRITE_ON;
    else
    {
      int type;
      if ((type=find_type(argument, &delay_key_write_typelib, 2)) <= 0)
      {
	fprintf(stderr,"Unknown delay_key_write type: %s\n",argument);
	exit(1);
      }
      delay_key_write_options= (uint) type-1;
    }
    break;
  case OPT_CHARSETS_DIR:
    strmake(mysql_charsets_dir, argument, sizeof(mysql_charsets_dir)-1);
    charsets_dir = mysql_charsets_dir;
    break;
  case OPT_TX_ISOLATION:
  {
    int type;
    if ((type=find_type(argument, &tx_isolation_typelib, 2)) <= 0)
    {
      fprintf(stderr,"Unknown transaction isolation type: %s\n",argument);
      exit(1);
    }
    global_system_variables.tx_isolation= (type-1);
    break;
  }
#ifdef HAVE_BERKELEY_DB
  case OPT_BDB_NOSYNC:
    berkeley_env_flags|=DB_TXN_NOSYNC;
    break;
  case OPT_BDB_NO_RECOVER:
    berkeley_init_flags&= ~(DB_RECOVER);
    break;
  case OPT_BDB_LOCK:
  {
    int type;
    if ((type=find_type(argument, &berkeley_lock_typelib, 2)) > 0)
      berkeley_lock_type=berkeley_lock_types[type-1];
    else
    {
      int err;
      char *end;
      uint length= strlen(argument);
      long value= my_strntol(&my_charset_latin1, argument, length, 10, &end, &err);
      if (test_if_int(argument,(uint) length, end, &my_charset_latin1))
	berkeley_lock_scan_time= value;
      else
      {
	fprintf(stderr,"Unknown lock type: %s\n",argument);
	exit(1);
      }
    }
    break;
  }
  case OPT_BDB_SHARED:
    berkeley_init_flags&= ~(DB_PRIVATE);
    berkeley_shared_data=1;
    break;
#endif /* HAVE_BERKELEY_DB */
  case OPT_BDB:
#ifdef HAVE_BERKELEY_DB
    if (opt_bdb)
    {
      berkeley_skip=0;
      have_berkeley_db=SHOW_OPTION_YES;
    }
    else
    {
      berkeley_skip=1;
      have_berkeley_db=SHOW_OPTION_DISABLED;
    }
#endif
    break;
  case OPT_ISAM:
#ifdef HAVE_ISAM
    if (opt_isam)
    {
      isam_skip=0;
      have_isam= SHOW_OPTION_YES;
    }
    else
    {
      isam_skip=1;
      have_isam= SHOW_OPTION_DISABLED;
    }
#endif
    break;
  case OPT_INNODB:
#ifdef HAVE_INNOBASE_DB
    if (opt_innodb)
    {
      innodb_skip=0;
      have_innodb=SHOW_OPTION_YES;
    }
    else
    {
      innodb_skip=1;
      have_innodb=SHOW_OPTION_DISABLED;
    }
#endif
    break;
  case OPT_INNODB_DATA_FILE_PATH:
#ifdef HAVE_INNOBASE_DB
    innobase_data_file_path=argument;
#endif
    break;
#ifdef HAVE_INNOBASE_DB
  case OPT_INNODB_LOG_ARCHIVE:
    innobase_log_archive= argument ? test(atoi(argument)) : 1;
    break;
  case OPT_INNODB_FAST_SHUTDOWN:
    innobase_fast_shutdown= argument ? test(atoi(argument)) : 1;
    break;
#endif /* HAVE_INNOBASE_DB */
  case OPT_MYISAM_RECOVER:
  {
    if (!argument || !argument[0])
    {
      myisam_recover_options=    HA_RECOVER_DEFAULT;
      myisam_recover_options_str= myisam_recover_typelib.type_names[0];
    }
    else
    {
      myisam_recover_options_str=argument;
      if ((myisam_recover_options=
	   find_bit_type(argument, &myisam_recover_typelib)) == ~(ulong) 0)
      {
	fprintf(stderr, "Unknown option to myisam-recover: %s\n",argument);
	exit(1);
      }
    }
    ha_open_options|=HA_OPEN_ABORT_IF_CRASHED;
    break;
  }
  case OPT_SQL_MODE:
  {
    sql_mode_str= argument;
    if ((global_system_variables.sql_mode=
         find_bit_type(argument, &sql_mode_typelib)) == ~(ulong) 0)
    {
      fprintf(stderr, "Unknown option to sql-mode: %s\n", argument);
      exit(1);
    }
    global_system_variables.sql_mode= fix_sql_mode(global_system_variables.
						   sql_mode);
  }
  case OPT_MASTER_PASSWORD:
    master_password=argument;
    break;
  case OPT_SKIP_SAFEMALLOC:
#ifdef SAFEMALLOC
    sf_malloc_quick=1;
#endif
    break;
  }
  return 0;
}


extern "C" gptr *
mysql_getopt_value(const char *keyname, uint key_length,
		   const struct my_option *option)
{
  if (!key_length)
  {
    keyname= "default";
    key_length= 7;
  }
  switch (option->id) {
  case OPT_KEY_BUFFER_SIZE:
  {
    KEY_CACHE *key_cache;
    if (!(key_cache= get_or_create_key_cache(keyname, key_length)))
      exit(1);
    return (gptr*) &key_cache->size;
  }
  }
  return option->value;
}


static void get_options(int argc,char **argv)
{
  int ho_error;

  my_getopt_register_get_addr(mysql_getopt_value);
  if ((ho_error=handle_options(&argc, &argv, my_long_options, get_one_option)))
    exit(ho_error);
  if (argc > 0)
  {
    fprintf(stderr, "%s: Too many arguments.\nUse --help to get a list of available options\n", my_progname);
    exit(ho_error);
  }

#if defined(HAVE_BROKEN_REALPATH)
  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
  /* Set global MyISAM variables from delay_key_write_options */
  fix_delay_key_write((THD*) 0, OPT_GLOBAL);

  if (mysqld_chroot)
    set_root(mysqld_chroot);
  fix_paths();

  /*
    Set some global variables from the global_system_variables
    In most cases the global variables will not be used
  */
  my_disable_locking= myisam_single_user= test(opt_external_locking == 0);
  my_default_record_cache_size=global_system_variables.read_buff_size;
  myisam_max_temp_length=
    (my_off_t) global_system_variables.myisam_max_sort_file_size;
  myisam_max_extra_temp_length=
    (my_off_t) global_system_variables.myisam_max_extra_sort_file_size;

  /* Set global variables based on startup options */
  myisam_block_size=(uint) 1 << my_bit_log2(opt_myisam_block_size);
  table_alias_charset= (lower_case_table_names ?
			files_charset_info :
			&my_charset_bin);
  /* QQ To be deleted when we have key cache variables in a struct */
  keybuff_size= (((KEY_CACHE *) find_named(&key_caches, "default", 7))->size);
}


static char *get_relative_path(const char *path)
{
  if (test_if_hard_path(path) &&
      is_prefix(path,DEFAULT_MYSQL_HOME) &&
      strcmp(DEFAULT_MYSQL_HOME,FN_ROOTDIR))
  {
    path+=(uint) strlen(DEFAULT_MYSQL_HOME);
    while (*path == FN_LIBCHAR)
      path++;
  }
  return (char*) path;
}


/*
  Fix filename and replace extension where 'dir' is relative to
  mysql_real_data_home.
  Return 1 if len(path) > FN_REFLEN
*/

bool
fn_format_relative_to_data_home(my_string to, const char *name,
				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,
		    MY_REPLACE_EXT | MY_UNPACK_FILENAME | MY_SAFE_PATH);
}


static void fix_paths(void)
{
  char buff[FN_REFLEN],*pos;
  convert_dirname(mysql_home,mysql_home,NullS);
  /* Resolve symlinks to allow 'mysql_home' to be a relative symlink */
  my_realpath(mysql_home,mysql_home,MYF(0));
  /* Ensure that mysql_home ends in FN_LIBCHAR */
  pos=strend(mysql_home);
  if (pos[-1] != FN_LIBCHAR)
  {
    pos[0]= FN_LIBCHAR;
    pos[1]= 0;
  }
  convert_dirname(mysql_real_data_home,mysql_real_data_home,NullS);
  convert_dirname(language,language,NullS);
  (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);
  (void) my_load_path(pidfile_name,pidfile_name,mysql_real_data_home);

  char *sharedir=get_relative_path(SHAREDIR);
  if (test_if_hard_path(sharedir))
    strmake(buff,sharedir,sizeof(buff)-1);		/* purecov: tested */
  else
    strxnmov(buff,sizeof(buff)-1,mysql_home,sharedir,NullS);
  convert_dirname(buff,buff,NullS);
  (void) my_load_path(language,language,buff);

  /* If --character-sets-dir isn't given, use shared library dir */
  if (charsets_dir != mysql_charsets_dir)
  {
    strxnmov(mysql_charsets_dir, sizeof(mysql_charsets_dir)-1, buff,
	     CHARSET_DIR, NullS);
    charsets_dir=mysql_charsets_dir;
  }

  if (init_tmpdir(&mysql_tmpdir_list, opt_mysql_tmpdir))
    exit(1);
#ifdef HAVE_REPLICATION
  if (!slave_load_tmpdir)
  {
    if (!(slave_load_tmpdir = (char*) my_strdup(mysql_tmpdir, MYF(MY_FAE))))
      exit(1);
  }
#endif /* HAVE_REPLICATION */
}



#ifdef SET_RLIMIT_NOFILE
static uint set_maximum_open_files(uint max_file_limit)
{
  struct rlimit rlimit;
  ulong old_cur;

  if (!getrlimit(RLIMIT_NOFILE,&rlimit))
  {
    old_cur=rlimit.rlim_cur;
    if (rlimit.rlim_cur >= max_file_limit)	// Nothing to do
      return rlimit.rlim_cur;			/* purecov: inspected */
    rlimit.rlim_cur=rlimit.rlim_max=max_file_limit;
    if (setrlimit(RLIMIT_NOFILE,&rlimit))
    {
      sql_print_error("Warning: setrlimit couldn't increase number of open files to more than %lu (request: %u)",
		      old_cur, max_file_limit);	/* purecov: inspected */
      max_file_limit=old_cur;
    }
    else
    {
      (void) getrlimit(RLIMIT_NOFILE,&rlimit);
      if ((uint) rlimit.rlim_cur != max_file_limit)
	sql_print_error("Warning: setrlimit returned ok, but didn't change limits. Max open files is %ld (request: %u)",
			(ulong) rlimit.rlim_cur,
			max_file_limit); /* purecov: inspected */
      max_file_limit=rlimit.rlim_cur;
    }
  }
  return max_file_limit;
}
#endif

#ifdef OS2
static uint set_maximum_open_files(uint max_file_limit)
{
   LONG     cbReqCount;
   ULONG    cbCurMaxFH, cbCurMaxFH0;
   APIRET   ulrc;

   // get current limit
   cbReqCount = 0;
   DosSetRelMaxFH( &cbReqCount, &cbCurMaxFH0);

   // set new limit
   cbReqCount = max_file_limit - cbCurMaxFH0;
   ulrc = DosSetRelMaxFH( &cbReqCount, &cbCurMaxFH);
   if (ulrc) {
      sql_print_error("Warning: DosSetRelMaxFH couldn't increase number of open files to more than %d",
         cbCurMaxFH0);
      cbCurMaxFH = cbCurMaxFH0;
   }

   return cbCurMaxFH;
}
#endif

/*
  Return a bitfield from a string of substrings separated by ','
  returns ~(ulong) 0 on error.
*/

static ulong find_bit_type(const char *x, TYPELIB *bit_lib)
{
  bool found_end;
  int  found_count;
  const char *end,*i,*j;
  const char **array, *pos;
  ulong found,found_int,bit;
  DBUG_ENTER("find_bit_type");
  DBUG_PRINT("enter",("x: '%s'",x));

  found=0;
  found_end= 0;
  pos=(my_string) x;
  while (*pos == ' ') pos++;
  found_end= *pos == 0;
  while (!found_end)
  {
    if (!*(end=strcend(pos,',')))		/* Let end point at fieldend */
    {
      while (end > pos && end[-1] == ' ')
	end--;					/* Skip end-space */
      found_end=1;
    }
    found_int=0; found_count=0;
    for (array=bit_lib->type_names, bit=1 ; (i= *array++) ; bit<<=1)
    {
      j=pos;
      while (j != end)
      {
	if (my_toupper(mysqld_charset,*i++) !=
            my_toupper(mysqld_charset,*j++))
	  goto skipp;
      }
      found_int=bit;
      if (! *i)
      {
	found_count=1;
	break;
      }
      else if (j != pos)			// Half field found
      {
	found_count++;				// Could be one of two values
      }
skipp: ;
    }
    if (found_count != 1)
      DBUG_RETURN(~(ulong) 0);				// No unique value
    found|=found_int;
    pos=end+1;
  }

  DBUG_PRINT("exit",("bit-field: %ld",(ulong) found));
  DBUG_RETURN(found);
} /* find_bit_type */


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

#ifdef __GNUC__
/* Used templates */
template class I_List<THD>;
template class I_List_iterator<THD>;
template class I_List<i_string>;
template class I_List<i_string_pair>;
template class I_List<NAMED_LIST>;
FIX_GCC_LINKING_PROBLEM
#endif