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
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2000-2001,2004-2005 Silicon Graphics, Inc.
* All Rights Reserved.
*/
#include "libxfs.h"
#include "libxlog.h"
int print_exit;
int print_skip_uuid;
int print_record_header;
void
xlog_init(
struct xfs_mount *mp,
struct xlog *log)
{
unsigned int log_sect_size = BBSIZE;
memset(log, 0, sizeof(*log));
log->l_dev = mp->m_logdev_targp;
log->l_logBBsize = XFS_FSB_TO_BB(mp, mp->m_sb.sb_logblocks);
log->l_logBBstart = XFS_FSB_TO_DADDR(mp, mp->m_sb.sb_logstart);
if (xfs_has_sector(mp))
log_sect_size <<= (mp->m_sb.sb_logsectlog - BBSHIFT);
log->l_sectBBsize = BTOBB(log_sect_size);
log->l_mp = mp;
if (xfs_has_sector(mp)) {
log->l_sectbb_log = mp->m_sb.sb_logsectlog - BBSHIFT;
ASSERT(log->l_sectbb_log <= mp->m_sectbb_log);
/* for larger sector sizes, must have v2 or external log */
ASSERT(log->l_sectbb_log == 0 ||
log->l_logBBstart == 0 ||
xfs_has_logv2(mp));
ASSERT(mp->m_sb.sb_logsectlog >= BBSHIFT);
}
log->l_sectbb_mask = (1 << log->l_sectbb_log) - 1;
}
/*
* Return 1 for dirty, 0 for clean, -1 for errors
*/
int
xlog_is_dirty(
struct xfs_mount *mp,
struct xlog *log)
{
int error;
xfs_daddr_t head_blk, tail_blk;
xlog_init(mp, log);
error = xlog_find_tail(log, &head_blk, &tail_blk);
if (error) {
xlog_warn(_("%s: cannot find log head/tail "
"(xlog_find_tail=%d)\n"),
__func__, error);
return -1;
}
if (head_blk != tail_blk)
return 1;
return 0;
}
static int
header_check_uuid(xfs_mount_t *mp, xlog_rec_header_t *head)
{
char uu_log[64], uu_sb[64];
if (print_skip_uuid)
return 0;
if (!platform_uuid_compare(&mp->m_sb.sb_uuid, &head->h_fs_uuid))
return 0;
platform_uuid_unparse(&mp->m_sb.sb_uuid, uu_sb);
platform_uuid_unparse(&head->h_fs_uuid, uu_log);
printf(_("* ERROR: mismatched uuid in log\n"
"* SB : %s\n* log: %s\n"),
uu_sb, uu_log);
memcpy(&mp->m_sb.sb_uuid, &head->h_fs_uuid, sizeof(uuid_t));
return 0;
}
int
xlog_header_check_recover(xfs_mount_t *mp, xlog_rec_header_t *head)
{
if (print_record_header)
printf(_("\nLOG REC AT LSN cycle %d block %d (0x%x, 0x%x)\n"),
CYCLE_LSN(be64_to_cpu(head->h_lsn)),
BLOCK_LSN(be64_to_cpu(head->h_lsn)),
CYCLE_LSN(be64_to_cpu(head->h_lsn)),
BLOCK_LSN(be64_to_cpu(head->h_lsn)));
if (be32_to_cpu(head->h_magicno) != XLOG_HEADER_MAGIC_NUM) {
printf(_("* ERROR: bad magic number in log header: 0x%x\n"),
be32_to_cpu(head->h_magicno));
} else if (header_check_uuid(mp, head)) {
/* failed - fall through */
} else if (be32_to_cpu(head->h_fmt) != XLOG_FMT) {
printf(_("* ERROR: log format incompatible (log=%d, ours=%d)\n"),
be32_to_cpu(head->h_fmt), XLOG_FMT);
} else {
/* everything is ok */
return 0;
}
/* bail out now or just carry on regardless */
if (print_exit)
xlog_exit(_("Bad log"));
return 0;
}
int
xlog_header_check_mount(xfs_mount_t *mp, xlog_rec_header_t *head)
{
if (platform_uuid_is_null(&head->h_fs_uuid)) return 0;
if (header_check_uuid(mp, head)) {
/* bail out now or just carry on regardless */
if (print_exit)
xlog_exit(_("Bad log"));
}
return 0;
}
/*
* Userspace versions of common diagnostic routines (varargs fun).
*/
void
xlog_warn(char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
fputs("\n", stderr);
va_end(ap);
}
void
xlog_exit(char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
fputs("\n", stderr);
va_end(ap);
exit(1);
}
void
xlog_panic(char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
fputs("\n", stderr);
va_end(ap);
abort();
}
|
