1 : /* Copyright (C) 2006 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
2 :
3 : This program is free software; you can redistribute it and/or modify
4 : it under the terms of the GNU General Public License as published by
5 : the Free Software Foundation; version 2 of the License.
6 :
7 : This program is distributed in the hope that it will be useful,
8 : but WITHOUT ANY WARRANTY; without even the implied warranty of
9 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 : GNU General Public License for more details.
11 :
12 : You should have received a copy of the GNU General Public License
13 : along with this program; if not, write to the Free Software
14 : Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
15 :
16 : #include "ma_fulltext.h"
17 : #include "trnman_public.h"
18 :
19 : /**
20 : @brief drops (deletes) a table
21 :
22 : @param name table's name
23 :
24 : @return Operation status
25 : @retval 0 ok
26 : @retval 1 error
27 : */
28 :
29 : int maria_delete_table(const char *name)
30 0 : {
31 : char from[FN_REFLEN];
32 : #ifdef USE_RAID
33 : uint raid_type=0,raid_chunks=0;
34 : #endif
35 : MARIA_HA *info;
36 : myf sync_dir;
37 0 : DBUG_ENTER("maria_delete_table");
38 :
39 : #ifdef EXTRA_DEBUG
40 0 : _ma_check_table_is_closed(name,"delete");
41 : #endif
42 : /** @todo LOCK take X-lock on table */
43 : /*
44 : We need to know if this table is transactional.
45 : When built with RAID support, we also need to determine if this table
46 : makes use of the raid feature. If yes, we need to remove all raid
47 : chunks. This is done with my_raid_delete(). Unfortunately it is
48 : necessary to open the table just to check this. We use
49 : 'open_for_repair' to be able to open even a crashed table. If even
50 : this open fails, we assume no raid configuration for this table
51 : and try to remove the normal data file only. This may however
52 : leave the raid chunks behind.
53 : */
54 0 : if (!(info= maria_open(name, O_RDONLY, HA_OPEN_FOR_REPAIR)))
55 : {
56 : #ifdef USE_RAID
57 : raid_type= 0;
58 : #endif
59 0 : sync_dir= 0;
60 : }
61 : else
62 : {
63 : #ifdef USE_RAID
64 : raid_type= info->s->base.raid_type;
65 : raid_chunks= info->s->base.raid_chunks;
66 : #endif
67 0 : sync_dir= (info->s->now_transactional && !info->s->temporary &&
68 : !maria_in_recovery) ?
69 : MY_SYNC_DIR : 0;
70 0 : maria_close(info);
71 : }
72 :
73 0 : if (sync_dir)
74 : {
75 : /*
76 : For this log record to be of any use for Recovery, we need the upper
77 : MySQL layer to be crash-safe in DDLs.
78 : For now this record can serve when we apply logs to a backup, so we sync
79 : it.
80 : */
81 : LSN lsn;
82 : LEX_CUSTRING log_array[TRANSLOG_INTERNAL_PARTS + 1];
83 0 : log_array[TRANSLOG_INTERNAL_PARTS + 0].str= (uchar*)name;
84 0 : log_array[TRANSLOG_INTERNAL_PARTS + 0].length= strlen(name) + 1;
85 0 : if (unlikely(translog_write_record(&lsn, LOGREC_REDO_DROP_TABLE,
86 : &dummy_transaction_object, NULL,
87 : (translog_size_t)
88 : log_array[TRANSLOG_INTERNAL_PARTS +
89 : 0].length,
90 : sizeof(log_array)/sizeof(log_array[0]),
91 : log_array, NULL, NULL) ||
92 : translog_flush(lsn)))
93 0 : DBUG_RETURN(1);
94 : }
95 :
96 0 : fn_format(from,name,"",MARIA_NAME_IEXT,MY_UNPACK_FILENAME|MY_APPEND_EXT);
97 0 : if (my_delete_with_symlink(from, MYF(MY_WME | sync_dir)))
98 0 : DBUG_RETURN(my_errno);
99 0 : fn_format(from,name,"",MARIA_NAME_DEXT,MY_UNPACK_FILENAME|MY_APPEND_EXT);
100 : #ifdef USE_RAID
101 : if (raid_type)
102 : DBUG_RETURN(my_raid_delete(from, raid_chunks, MYF(MY_WME | sync_dir)) ?
103 : my_errno : 0);
104 : #endif
105 0 : DBUG_RETURN(my_delete_with_symlink(from, MYF(MY_WME | sync_dir)) ?
106 : my_errno : 0);
107 : }
|