Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier...
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / fs / xfs / xfs_error.c
blob92d5cd5bf4f2329a902247fc3dbaf2fa521e16bb
1 /*
2 * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 #include "xfs.h"
19 #include "xfs_fs.h"
20 #include "xfs_types.h"
21 #include "xfs_log.h"
22 #include "xfs_inum.h"
23 #include "xfs_trans.h"
24 #include "xfs_sb.h"
25 #include "xfs_ag.h"
26 #include "xfs_dir2.h"
27 #include "xfs_dmapi.h"
28 #include "xfs_mount.h"
29 #include "xfs_bmap_btree.h"
30 #include "xfs_dir2_sf.h"
31 #include "xfs_attr_sf.h"
32 #include "xfs_dinode.h"
33 #include "xfs_inode.h"
34 #include "xfs_utils.h"
35 #include "xfs_error.h"
37 #ifdef DEBUG
39 int xfs_etrap[XFS_ERROR_NTRAP] = {
43 int
44 xfs_error_trap(int e)
46 int i;
48 if (!e)
49 return 0;
50 for (i = 0; i < XFS_ERROR_NTRAP; i++) {
51 if (xfs_etrap[i] == 0)
52 break;
53 if (e != xfs_etrap[i])
54 continue;
55 cmn_err(CE_NOTE, "xfs_error_trap: error %d", e);
56 BUG();
57 break;
59 return e;
62 int xfs_etest[XFS_NUM_INJECT_ERROR];
63 int64_t xfs_etest_fsid[XFS_NUM_INJECT_ERROR];
64 char * xfs_etest_fsname[XFS_NUM_INJECT_ERROR];
66 int
67 xfs_error_test(int error_tag, int *fsidp, char *expression,
68 int line, char *file, unsigned long randfactor)
70 int i;
71 int64_t fsid;
73 if (random32() % randfactor)
74 return 0;
76 memcpy(&fsid, fsidp, sizeof(xfs_fsid_t));
78 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
79 if (xfs_etest[i] == error_tag && xfs_etest_fsid[i] == fsid) {
80 cmn_err(CE_WARN,
81 "Injecting error (%s) at file %s, line %d, on filesystem \"%s\"",
82 expression, file, line, xfs_etest_fsname[i]);
83 return 1;
87 return 0;
90 int
91 xfs_errortag_add(int error_tag, xfs_mount_t *mp)
93 int i;
94 int len;
95 int64_t fsid;
97 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
99 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
100 if (xfs_etest_fsid[i] == fsid && xfs_etest[i] == error_tag) {
101 cmn_err(CE_WARN, "XFS error tag #%d on", error_tag);
102 return 0;
106 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
107 if (xfs_etest[i] == 0) {
108 cmn_err(CE_WARN, "Turned on XFS error tag #%d",
109 error_tag);
110 xfs_etest[i] = error_tag;
111 xfs_etest_fsid[i] = fsid;
112 len = strlen(mp->m_fsname);
113 xfs_etest_fsname[i] = kmem_alloc(len + 1, KM_SLEEP);
114 strcpy(xfs_etest_fsname[i], mp->m_fsname);
115 return 0;
119 cmn_err(CE_WARN, "error tag overflow, too many turned on");
121 return 1;
125 xfs_errortag_clearall(xfs_mount_t *mp, int loud)
127 int64_t fsid;
128 int cleared = 0;
129 int i;
131 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
134 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
135 if ((fsid == 0LL || xfs_etest_fsid[i] == fsid) &&
136 xfs_etest[i] != 0) {
137 cleared = 1;
138 cmn_err(CE_WARN, "Clearing XFS error tag #%d",
139 xfs_etest[i]);
140 xfs_etest[i] = 0;
141 xfs_etest_fsid[i] = 0LL;
142 kmem_free(xfs_etest_fsname[i]);
143 xfs_etest_fsname[i] = NULL;
147 if (loud || cleared)
148 cmn_err(CE_WARN,
149 "Cleared all XFS error tags for filesystem \"%s\"",
150 mp->m_fsname);
152 return 0;
154 #endif /* DEBUG */
157 void
158 xfs_fs_cmn_err(int level, xfs_mount_t *mp, char *fmt, ...)
160 va_list ap;
162 va_start(ap, fmt);
163 xfs_fs_vcmn_err(level, mp, fmt, ap);
164 va_end(ap);
167 void
168 xfs_cmn_err(int panic_tag, int level, xfs_mount_t *mp, char *fmt, ...)
170 va_list ap;
172 #ifdef DEBUG
173 xfs_panic_mask |= XFS_PTAG_SHUTDOWN_CORRUPT;
174 #endif
176 if (xfs_panic_mask && (xfs_panic_mask & panic_tag)
177 && (level & CE_ALERT)) {
178 level &= ~CE_ALERT;
179 level |= CE_PANIC;
180 cmn_err(CE_ALERT, "XFS: Transforming an alert into a BUG.");
182 va_start(ap, fmt);
183 xfs_fs_vcmn_err(level, mp, fmt, ap);
184 va_end(ap);
187 void
188 xfs_error_report(
189 char *tag,
190 int level,
191 xfs_mount_t *mp,
192 char *fname,
193 int linenum,
194 inst_t *ra)
196 if (level <= xfs_error_level) {
197 xfs_cmn_err(XFS_PTAG_ERROR_REPORT,
198 CE_ALERT, mp,
199 "XFS internal error %s at line %d of file %s. Caller 0x%p\n",
200 tag, linenum, fname, ra);
202 xfs_stack_trace();
206 void
207 xfs_corruption_error(
208 char *tag,
209 int level,
210 xfs_mount_t *mp,
211 void *p,
212 char *fname,
213 int linenum,
214 inst_t *ra)
216 if (level <= xfs_error_level)
217 xfs_hex_dump(p, 16);
218 xfs_error_report(tag, level, mp, fname, linenum, ra);