Added --skip-symlinks

Don't force repair of tables that are not closed properly.


Docs/manual.texi:
  Added information about symbolic links.
include/my_sys.h:
  symbolic link support
myisam/mi_check.c:
  Don't force repair of tables that are not closed properly.
myisam/myisamchk.c:
  Version number change.
mysys/my_static.c:
  symbolic link support
mysys/my_symlink2.c:
  Disabling of symbolic link support
sql/mysqld.cc:
  Disabling of symbolic link support

include/my_sys.h

@@ -208,7 +208,7 @@ extern long lCurMemory,lMaxMemory;	/* from safemalloc */
 
 extern ulong	my_default_record_cache_size;
 extern my_bool NEAR my_disable_locking,NEAR my_disable_async_io,
-       NEAR my_disable_flush_key_blocks;
+               NEAR my_disable_flush_key_blocks, NEAR my_disable_symlinks;
 extern char	wild_many,wild_one,wild_prefix;
 extern const char *charsets_dir;
 extern char *defaults_extra_file;

myisam/mi_check.c

@@ -110,9 +110,14 @@ int chk_status(MI_CHECK *param, register MI_INFO *info)
 			   "Table is marked as crashed");
   if (share->state.open_count != (uint) (info->s->global_changed ? 1 : 0))
   {
+    /* Don't count this as a real warning, as check can correct this ! */
+    uint save=param->warning_printed;
     mi_check_print_warning(param,
 			   "%d clients is using or hasn't closed the table properly",
 			   share->state.open_count);
+    /* If this will be fixed by the check, forget the warning */
+    if (param->testflag & T_UPDATE_STATE)
+      param->warning_printed=save;
   }
   return 0;
 }

myisam/myisamchk.c

@@ -201,7 +201,7 @@ static struct option long_options[] =
 
 static void print_version(void)
 {
-  printf("%s  Ver 1.45 for %s at %s\n",my_progname,SYSTEM_TYPE,
+  printf("%s  Ver 1.46 for %s at %s\n",my_progname,SYSTEM_TYPE,
 	 MACHINE_TYPE);
 }
 

mysys/my_static.c

@@ -97,4 +97,5 @@ int (*fatal_error_handler_hook)(uint error,const char *str,myf MyFlags)=
 my_bool NEAR my_disable_locking=0;
 my_bool NEAR my_disable_async_io=0;
 my_bool NEAR my_disable_flush_key_blocks=0;
+my_bool NEAR my_disable_symlinks=0;
 my_bool NEAR mysys_uses_curses=0;

mysys/my_symlink2.c

@@ -62,7 +62,8 @@ File my_create_with_symlink(const char *linkname, const char *filename,
 int my_delete_with_symlink(const char *name, myf MyFlags)
 {
   char link_name[FN_REFLEN];
-  int was_symlink= !my_readlink(link_name, name, MYF(0));
+  int was_symlink= (!my_disable_symlinks &&
+		    !my_readlink(link_name, name, MYF(0)));
   int result;
   DBUG_ENTER("my_delete_with_symlink");
 
@@ -90,7 +91,8 @@ int my_rename_with_symlink(const char *from, const char *to, myf MyFlags)
   return my_rename(from, to, MyFlags);
 #else
   char link_name[FN_REFLEN], tmp_name[FN_REFLEN];
-  int was_symlink= !my_readlink(link_name, name, MYF(0));
+  int was_symlink= (!my_disable_symlinks &&
+		    !my_readlink(link_name, name, MYF(0)));
   int result;
   DBUG_ENTER("my_rename_with_symlink");
 

sql/mysqld.cc

@@ -2462,7 +2462,7 @@ enum options {
                OPT_TEMP_POOL, OPT_TX_ISOLATION,
 	       OPT_GEMINI_FLUSH_LOG, OPT_GEMINI_RECOVER,
                OPT_GEMINI_UNBUFFERED_IO, OPT_SKIP_SAFEMALLOC,
-	       OPT_SKIP_STACK_TRACE
+	       OPT_SKIP_STACK_TRACE, OPT_SKIP_SYMLINKS
 };
 
 static struct option long_options[] = {
@@ -2588,6 +2588,7 @@ static struct option long_options[] = {
   {"skip-show-database",    no_argument,       0, (int) OPT_SKIP_SHOW_DB},
   {"skip-slave-start",      no_argument,       0, (int) OPT_SKIP_SLAVE_START},
   {"skip-stack-trace",	    no_argument,       0, (int) OPT_SKIP_STACK_TRACE},
+  {"skip-symlinks",	    no_argument,       0, (int) OPT_SKIP_SYMLINKS},
   {"skip-thread-priority",  no_argument,       0, (int) OPT_SKIP_PRIOR},
   {"sql-bin-update-same",   no_argument,       0, (int) OPT_SQL_BIN_UPDATE_SAME},
 #include "sslopt-longopts.h"
@@ -3420,6 +3421,7 @@ static void get_options(int argc,char **argv)
       myisam_delay_key_write=0;
       myisam_concurrent_insert=0;
       myisam_recover_options= HA_RECOVER_NONE;
+      my_disable_symlinks=1;
       ha_open_options&= ~HA_OPEN_ABORT_IF_CRASHED;
       break;
     case (int) OPT_SAFE:
@@ -3476,6 +3478,9 @@ static void get_options(int argc,char **argv)
     case (int) OPT_SKIP_STACK_TRACE:
       test_flags|=TEST_NO_STACKTRACE;
       break;
+    case (int) OPT_SKIP_SYMLINKS:
+      my_disable_symlinks=1;
+      break;
     case (int) OPT_BIND_ADDRESS:
       if (optarg && isdigit(optarg[0]))
       {