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/* Copyright (C) 2000-2001, 2004, 2006 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; 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/*
deletes a table
*/
#include "fulltext.h"
/**
Remove MyISAM data/index file safely
@details
If name is a symlink and file it is pointing to is not in
data directory, file is also removed.
@param name file to remove
@returns
0 on success or my_errno on failure
*/
static int _mi_safe_delete_file(const char *name)
{
DBUG_ENTER("_mi_safe_delete_file");
if (my_is_symlink(name) && (*myisam_test_invalid_symlink)(name))
{
/*
Symlink is pointing to file in data directory.
Remove symlink, keep file.
*/
if (my_delete(name, MYF(MY_WME)))
DBUG_RETURN(my_errno);
}
else
{
if (my_delete_with_symlink(name, MYF(MY_WME)))
DBUG_RETURN(my_errno);
}
DBUG_RETURN(0);
}
int mi_delete_table(const char *name)
{
char from[FN_REFLEN];
#ifdef USE_RAID
uint raid_type=0,raid_chunks=0;
#endif
DBUG_ENTER("mi_delete_table");
#ifdef EXTRA_DEBUG
check_table_is_closed(name,"delete");
#endif
#ifdef USE_RAID
{
MI_INFO *info;
/*
When built with RAID support, we need to determine if this table
makes use of the raid feature. If yes, we need to remove all raid
chunks. This is done with my_raid_delete(). Unfortunately it is
necessary to open the table just to check this. We use
'open_for_repair' to be able to open even a crashed table. If even
this open fails, we assume no raid configuration for this table
and try to remove the normal data file only. This may however
leave the raid chunks behind.
*/
if (!(info= mi_open(name, O_RDONLY, HA_OPEN_FOR_REPAIR)))
raid_type= 0;
else
{
raid_type= info->s->base.raid_type;
raid_chunks= info->s->base.raid_chunks;
mi_close(info);
}
}
#ifdef EXTRA_DEBUG
check_table_is_closed(name,"delete");
#endif
#endif /* USE_RAID */
fn_format(from,name,"",MI_NAME_IEXT,MY_UNPACK_FILENAME|MY_APPEND_EXT);
if (_mi_safe_delete_file(from))
DBUG_RETURN(my_errno);
fn_format(from,name,"",MI_NAME_DEXT,MY_UNPACK_FILENAME|MY_APPEND_EXT);
#ifdef USE_RAID
if (raid_type)
DBUG_RETURN(my_raid_delete(from, raid_chunks, MYF(MY_WME)) ? my_errno : 0);
#endif
DBUG_RETURN(_mi_safe_delete_file(from));
}
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