1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
/* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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);
pthread_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:
pthread_mutex_unlock(&THR_LOCK_maria); /* Not exactly right... */
if (maria_close(info))
error=my_errno;
pthread_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 (flush_pagecache_blocks(info->s->pagecache, &info->s->kfile,
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 && my_close(info->s->kfile.file, MYF(0)))
error = my_errno;
if (info->dfile.file >= 0 && my_close(info->dfile.file, MYF(0)))
error = my_errno;
info->s->kfile.file= info->dfile.file= -1;/* Files aren't open anymore */
break;
#endif
case HA_PANIC_READ: /* Restore to before WRITE */
#ifdef CANT_OPEN_FILES_TWICE
{ /* Open closed files */
char name_buff[FN_REFLEN];
if (info->s->kfile.file < 0)
if ((info->s->kfile.file= my_open(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= my_open(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;
}
}
#endif
if (info->was_locked)
{
if (maria_lock_database(info, info->was_locked))
error=my_errno;
info->was_locked=0;
}
break;
}
}
pthread_mutex_unlock(&THR_LOCK_maria);
if (flag == HA_PANIC_CLOSE)
maria_end();
if (!error)
DBUG_RETURN(0);
DBUG_RETURN(my_errno=error);
} /* maria_panic */
|
