Adding upstream version 1:10.11.6.upstream/1%10.11.6

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 139 insertions, 0 deletions

diff --git a/storage/maria/ma_panic.c b/storage/maria/ma_panic.c
new file mode 100644
index 00000000..58beec9e
--- /dev/null
+++ b/storage/maria/ma_panic.c
@@ -0,0 +1,139 @@
+/* Copyright (C) 2006 MySQL AB & MySQL Finland AB & TCX DataKonsult 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; version 2 of the License.
+
+   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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
+
+#include "ma_fulltext.h"
+
+/*
+  Stop usage of Maria
+
+  SYNOPSIS
+     maria_panic()
+     flag	HA_PANIC_CLOSE:  All maria files (tables and log) are closed.
+				 maria_end() is called.
+                HA_PANIC_WRITE:  All misam files are unlocked and
+                                 all changed data in single user maria is
+                                 written to file
+                HA_PANIC_READ    All maria files that was locked when
+			         maria_panic(HA_PANIC_WRITE) was done is
+                                 locked. A maria_readinfo() is done for
+                                 all single user files to get changes
+                                 in database
+
+  RETURN
+    0  ok
+    #  error number in case of error
+*/
+
+int maria_panic(enum ha_panic_function flag)
+{
+  int error=0;
+  LIST *list_element,*next_open;
+  MARIA_HA *info;
+  DBUG_ENTER("maria_panic");
+
+  if (!maria_inited)
+    DBUG_RETURN(0);
+  mysql_mutex_lock(&THR_LOCK_maria);
+  for (list_element=maria_open_list ; list_element ; list_element=next_open)
+  {
+    next_open=list_element->next;		/* Save if close */
+    info=(MARIA_HA*) list_element->data;
+    switch (flag) {
+    case HA_PANIC_CLOSE:
+      /*
+        If bad luck (if some tables would be used now, which normally does not
+        happen in MySQL), as we release the mutex, the list may change and so
+        we may crash.
+      */
+      mysql_mutex_unlock(&THR_LOCK_maria);
+      if (maria_close(info))
+	error=my_errno;
+      mysql_mutex_lock(&THR_LOCK_maria);
+      break;
+    case HA_PANIC_WRITE:		/* Do this to free databases */
+#ifdef CANT_OPEN_FILES_TWICE
+      if (info->s->options & HA_OPTION_READ_ONLY_DATA)
+	break;
+#endif
+      if (_ma_flush_table_files(info, MARIA_FLUSH_DATA | MARIA_FLUSH_INDEX,
+                                FLUSH_RELEASE, FLUSH_RELEASE))
+	error=my_errno;
+      if (info->opt_flag & WRITE_CACHE_USED)
+	if (flush_io_cache(&info->rec_cache))
+	  error=my_errno;
+      if (info->opt_flag & READ_CACHE_USED)
+      {
+	if (flush_io_cache(&info->rec_cache))
+	  error=my_errno;
+	reinit_io_cache(&info->rec_cache,READ_CACHE,0,
+		       (pbool) (info->lock_type != F_UNLCK),1);
+      }
+      if (info->lock_type != F_UNLCK && ! info->was_locked)
+      {
+	info->was_locked=info->lock_type;
+	if (maria_lock_database(info,F_UNLCK))
+	  error=my_errno;
+      }
+#ifdef CANT_OPEN_FILES_TWICE
+      if (info->s->kfile.file >= 0 && mysql_file_close(info->s->kfile.file, MYF(0)))
+	error = my_errno;
+      if (info->dfile.file >= 0 && mysql_file_close(info->dfile.file, MYF(0)))
+	error = my_errno;
+      info->s->kfile.file= info->dfile.file= -1;/* Files aren't open anymore */
+#endif
+      break;
+    case HA_PANIC_READ:			/* Restore to before WRITE */
+#ifdef CANT_OPEN_FILES_TWICE
+      {					/* Open closed files */
+	char name_buff[FN_REFLEN];
+        MARIA_SHARE *share= info->s;
+	if (share->kfile.file < 0)
+        {
+
+	  if ((share->kfile.file= mysql_file_open(key_file_kfile,
+                                       fn_format(name_buff, info->filename, "",
+                                                 N_NAME_IEXT,4),
+                                       info->mode, MYF(MY_WME))) < 0)
+	    error = my_errno;  
+        }
+	if (info->dfile.file < 0)
+	{
+	  if ((info->dfile.file= mysql_file_open(key_file_dfile,
+                                     fn_format(name_buff, info->filename,
+                                               "", N_NAME_DEXT, 4),
+                                      info->mode, MYF(MY_WME))) < 0)
+	    error = my_errno;
+	  info->rec_cache.file= info->dfile.file;
+	}
+	if (share->bitmap.file.file < 0)
+	  share->bitmap.file.file= info->dfile.file;
+      }
+#endif
+      if (info->was_locked)
+      {
+	if (maria_lock_database(info, info->was_locked))
+	  error=my_errno;
+	info->was_locked=0;
+      }
+      break;
+    }
+  }
+  mysql_mutex_unlock(&THR_LOCK_maria);
+  if (flag == HA_PANIC_CLOSE)
+    maria_end();
+  if (!error)
+    DBUG_RETURN(0);
+  DBUG_RETURN(my_errno=error);
+} /* maria_panic */