1 /*
2 * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
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.
8 *
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.
13 *
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
17 */
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"
36
37 #ifdef DEBUG
38
39 int xfs_etrap[XFS_ERROR_NTRAP] = {
40 0,
41 };
42
43 int
44 xfs_error_trap(int e)
45 {
46 int i;
47
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;
58 }
59 return e;
60 }
61 #endif
62
63 #if (defined(DEBUG) || defined(INDUCE_IO_ERROR))
64
65 int xfs_etest[XFS_NUM_INJECT_ERROR];
66 int64_t xfs_etest_fsid[XFS_NUM_INJECT_ERROR];
67 char * xfs_etest_fsname[XFS_NUM_INJECT_ERROR];
68
69 void
70 xfs_error_test_init(void)
71 {
72 memset(xfs_etest, 0, sizeof(xfs_etest));
73 memset(xfs_etest_fsid, 0, sizeof(xfs_etest_fsid));
74 memset(xfs_etest_fsname, 0, sizeof(xfs_etest_fsname));
75 }
76
77 int
78 xfs_error_test(int error_tag, int *fsidp, char *expression,
79 int line, char *file, unsigned long randfactor)
80 {
81 int i;
82 int64_t fsid;
83
84 if (random32() % randfactor)
85 return 0;
86
87 memcpy(&fsid, fsidp, sizeof(xfs_fsid_t));
88
89 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
90 if (xfs_etest[i] == error_tag && xfs_etest_fsid[i] == fsid) {
91 cmn_err(CE_WARN,
92 "Injecting error (%s) at file %s, line %d, on filesystem \"%s\"",
93 expression, file, line, xfs_etest_fsname[i]);
94 return 1;
95 }
96 }
97
98 return 0;
99 }
100
101 int
102 xfs_errortag_add(int error_tag, xfs_mount_t *mp)
103 {
104 int i;
105 int len;
106 int64_t fsid;
107
108 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
109
110 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
111 if (xfs_etest_fsid[i] == fsid && xfs_etest[i] == error_tag) {
112 cmn_err(CE_WARN, "XFS error tag #%d on", error_tag);
113 return 0;
114 }
115 }
116
117 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
118 if (xfs_etest[i] == 0) {
119 cmn_err(CE_WARN, "Turned on XFS error tag #%d",
120 error_tag);
121 xfs_etest[i] = error_tag;
122 xfs_etest_fsid[i] = fsid;
123 len = strlen(mp->m_fsname);
124 xfs_etest_fsname[i] = kmem_alloc(len + 1, KM_SLEEP);
125 strcpy(xfs_etest_fsname[i], mp->m_fsname);
126 return 0;
127 }
128 }
129
130 cmn_err(CE_WARN, "error tag overflow, too many turned on");
131
132 return 1;
133 }
134
135 int
136 xfs_errortag_clearall(xfs_mount_t *mp, int loud)
137 {
138 int64_t fsid;
139 int cleared = 0;
140 int i;
141
142 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
143
144
145 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
146 if ((fsid == 0LL || xfs_etest_fsid[i] == fsid) &&
147 xfs_etest[i] != 0) {
148 cleared = 1;
149 cmn_err(CE_WARN, "Clearing XFS error tag #%d",
150 xfs_etest[i]);
151 xfs_etest[i] = 0;
152 xfs_etest_fsid[i] = 0LL;
153 kmem_free(xfs_etest_fsname[i],
154 strlen(xfs_etest_fsname[i]) + 1);
155 xfs_etest_fsname[i] = NULL;
156 }
157 }
158
159 if (loud || cleared)
160 cmn_err(CE_WARN,
161 "Cleared all XFS error tags for filesystem \"%s\"",
162 mp->m_fsname);
163
164 return 0;
165 }
166 #endif /* DEBUG || INDUCE_IO_ERROR */
167
168 static void
169 xfs_fs_vcmn_err(int level, xfs_mount_t *mp, char *fmt, va_list ap)
170 {
171 if (mp != NULL) {
172 char *newfmt;
173 int len = 16 + mp->m_fsname_len + strlen(fmt);
174
175 newfmt = kmem_alloc(len, KM_SLEEP);
176 sprintf(newfmt, "Filesystem \"%s\": %s", mp->m_fsname, fmt);
177 icmn_err(level, newfmt, ap);
178 kmem_free(newfmt, len);
179 } else {
180 icmn_err(level, fmt, ap);
181 }
182 }
183
184 void
185 xfs_fs_cmn_err(int level, xfs_mount_t *mp, char *fmt, ...)
186 {
187 va_list ap;
188
189 va_start(ap, fmt);
190 xfs_fs_vcmn_err(level, mp, fmt, ap);
191 va_end(ap);
192 }
193
194 void
195 xfs_cmn_err(int panic_tag, int level, xfs_mount_t *mp, char *fmt, ...)
196 {
197 va_list ap;
198
199 #ifdef DEBUG
200 xfs_panic_mask |= XFS_PTAG_SHUTDOWN_CORRUPT;
201 #endif
202
203 if (xfs_panic_mask && (xfs_panic_mask & panic_tag)
204 && (level & CE_ALERT)) {
205 level &= ~CE_ALERT;
206 level |= CE_PANIC;
207 cmn_err(CE_ALERT, "XFS: Transforming an alert into a BUG.");
208 }
209 va_start(ap, fmt);
210 xfs_fs_vcmn_err(level, mp, fmt, ap);
211 va_end(ap);
212 }
213
214 void
215 xfs_error_report(
216 char *tag,
217 int level,
218 xfs_mount_t *mp,
219 char *fname,
220 int linenum,
221 inst_t *ra)
222 {
223 if (level <= xfs_error_level) {
224 xfs_cmn_err(XFS_PTAG_ERROR_REPORT,
225 CE_ALERT, mp,
226 "XFS internal error %s at line %d of file %s. Caller 0x%p\n",
227 tag, linenum, fname, ra);
228
229 xfs_stack_trace();
230 }
231 }
232
233 void
234 xfs_corruption_error(
235 char *tag,
236 int level,
237 xfs_mount_t *mp,
238 void *p,
239 char *fname,
240 int linenum,
241 inst_t *ra)
242 {
243 if (level <= xfs_error_level)
244 xfs_hex_dump(p, 16);
245 xfs_error_report(tag, level, mp, fname, linenum, ra);
246 }
247
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