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/* 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 */
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