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1da177e4 LT |
1 | /* |
2 | * Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of version 2 of the GNU General Public License as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it would be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
11 | * | |
12 | * Further, this software is distributed without any warranty that it is | |
13 | * free of the rightful claim of any third person regarding infringement | |
14 | * or the like. Any license provided herein, whether implied or | |
15 | * otherwise, applies only to this software file. Patent licenses, if | |
16 | * any, provided herein do not apply to combinations of this program with | |
17 | * other software, or any other product whatsoever. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License along | |
20 | * with this program; if not, write the Free Software Foundation, Inc., 59 | |
21 | * Temple Place - Suite 330, Boston MA 02111-1307, USA. | |
22 | * | |
23 | * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, | |
24 | * Mountain View, CA 94043, or: | |
25 | * | |
26 | * http://www.sgi.com | |
27 | * | |
28 | * For further information regarding this notice, see: | |
29 | * | |
30 | * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ | |
31 | */ | |
32 | ||
33 | #include "xfs.h" | |
34 | ||
35 | #include "xfs_macros.h" | |
36 | #include "xfs_types.h" | |
37 | #include "xfs_inum.h" | |
38 | #include "xfs_log.h" | |
39 | #include "xfs_sb.h" | |
40 | #include "xfs_trans.h" | |
41 | #include "xfs_dir.h" | |
42 | #include "xfs_dir2.h" | |
43 | #include "xfs_dmapi.h" | |
44 | #include "xfs_mount.h" | |
45 | #include "xfs_bmap_btree.h" | |
46 | #include "xfs_attr_sf.h" | |
47 | #include "xfs_dir_sf.h" | |
48 | #include "xfs_dir2_sf.h" | |
49 | #include "xfs_dinode.h" | |
50 | #include "xfs_inode.h" | |
51 | #include "xfs_utils.h" | |
52 | #include "xfs_error.h" | |
53 | ||
54 | #ifdef DEBUG | |
55 | ||
56 | int xfs_etrap[XFS_ERROR_NTRAP] = { | |
57 | 0, | |
58 | }; | |
59 | ||
60 | int | |
61 | xfs_error_trap(int e) | |
62 | { | |
63 | int i; | |
64 | ||
65 | if (!e) | |
66 | return 0; | |
67 | for (i = 0; i < XFS_ERROR_NTRAP; i++) { | |
68 | if (xfs_etrap[i] == 0) | |
69 | break; | |
70 | if (e != xfs_etrap[i]) | |
71 | continue; | |
72 | cmn_err(CE_NOTE, "xfs_error_trap: error %d", e); | |
73 | debug_stop_all_cpus((void *)-1LL); | |
74 | BUG(); | |
75 | break; | |
76 | } | |
77 | return e; | |
78 | } | |
79 | #endif | |
80 | ||
81 | #if (defined(DEBUG) || defined(INDUCE_IO_ERROR)) | |
82 | ||
83 | int xfs_etest[XFS_NUM_INJECT_ERROR]; | |
84 | int64_t xfs_etest_fsid[XFS_NUM_INJECT_ERROR]; | |
85 | char * xfs_etest_fsname[XFS_NUM_INJECT_ERROR]; | |
86 | ||
87 | void | |
88 | xfs_error_test_init(void) | |
89 | { | |
90 | memset(xfs_etest, 0, sizeof(xfs_etest)); | |
91 | memset(xfs_etest_fsid, 0, sizeof(xfs_etest_fsid)); | |
92 | memset(xfs_etest_fsname, 0, sizeof(xfs_etest_fsname)); | |
93 | } | |
94 | ||
95 | int | |
96 | xfs_error_test(int error_tag, int *fsidp, char *expression, | |
97 | int line, char *file, unsigned long randfactor) | |
98 | { | |
99 | int i; | |
100 | int64_t fsid; | |
101 | ||
102 | if (random() % randfactor) | |
103 | return 0; | |
104 | ||
105 | memcpy(&fsid, fsidp, sizeof(xfs_fsid_t)); | |
106 | ||
107 | for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { | |
108 | if (xfs_etest[i] == error_tag && xfs_etest_fsid[i] == fsid) { | |
109 | cmn_err(CE_WARN, | |
110 | "Injecting error (%s) at file %s, line %d, on filesystem \"%s\"", | |
111 | expression, file, line, xfs_etest_fsname[i]); | |
112 | return 1; | |
113 | } | |
114 | } | |
115 | ||
116 | return 0; | |
117 | } | |
118 | ||
119 | int | |
120 | xfs_errortag_add(int error_tag, xfs_mount_t *mp) | |
121 | { | |
122 | int i; | |
123 | int len; | |
124 | int64_t fsid; | |
125 | ||
126 | memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t)); | |
127 | ||
128 | for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { | |
129 | if (xfs_etest_fsid[i] == fsid && xfs_etest[i] == error_tag) { | |
130 | cmn_err(CE_WARN, "XFS error tag #%d on", error_tag); | |
131 | return 0; | |
132 | } | |
133 | } | |
134 | ||
135 | for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { | |
136 | if (xfs_etest[i] == 0) { | |
137 | cmn_err(CE_WARN, "Turned on XFS error tag #%d", | |
138 | error_tag); | |
139 | xfs_etest[i] = error_tag; | |
140 | xfs_etest_fsid[i] = fsid; | |
141 | len = strlen(mp->m_fsname); | |
142 | xfs_etest_fsname[i] = kmem_alloc(len + 1, KM_SLEEP); | |
143 | strcpy(xfs_etest_fsname[i], mp->m_fsname); | |
144 | return 0; | |
145 | } | |
146 | } | |
147 | ||
148 | cmn_err(CE_WARN, "error tag overflow, too many turned on"); | |
149 | ||
150 | return 1; | |
151 | } | |
152 | ||
153 | int | |
154 | xfs_errortag_clear(int error_tag, xfs_mount_t *mp) | |
155 | { | |
156 | int i; | |
157 | int64_t fsid; | |
158 | ||
159 | memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t)); | |
160 | ||
161 | for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { | |
162 | if (xfs_etest_fsid[i] == fsid && xfs_etest[i] == error_tag) { | |
163 | xfs_etest[i] = 0; | |
164 | xfs_etest_fsid[i] = 0LL; | |
165 | kmem_free(xfs_etest_fsname[i], | |
166 | strlen(xfs_etest_fsname[i]) + 1); | |
167 | xfs_etest_fsname[i] = NULL; | |
168 | cmn_err(CE_WARN, "Cleared XFS error tag #%d", | |
169 | error_tag); | |
170 | return 0; | |
171 | } | |
172 | } | |
173 | ||
174 | cmn_err(CE_WARN, "XFS error tag %d not on", error_tag); | |
175 | ||
176 | return 1; | |
177 | } | |
178 | ||
179 | int | |
180 | xfs_errortag_clearall_umount(int64_t fsid, char *fsname, int loud) | |
181 | { | |
182 | int i; | |
183 | int cleared = 0; | |
184 | ||
185 | for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { | |
186 | if ((fsid == 0LL || xfs_etest_fsid[i] == fsid) && | |
187 | xfs_etest[i] != 0) { | |
188 | cleared = 1; | |
189 | cmn_err(CE_WARN, "Clearing XFS error tag #%d", | |
190 | xfs_etest[i]); | |
191 | xfs_etest[i] = 0; | |
192 | xfs_etest_fsid[i] = 0LL; | |
193 | kmem_free(xfs_etest_fsname[i], | |
194 | strlen(xfs_etest_fsname[i]) + 1); | |
195 | xfs_etest_fsname[i] = NULL; | |
196 | } | |
197 | } | |
198 | ||
199 | if (loud || cleared) | |
200 | cmn_err(CE_WARN, | |
201 | "Cleared all XFS error tags for filesystem \"%s\"", | |
202 | fsname); | |
203 | ||
204 | return 0; | |
205 | } | |
206 | ||
207 | int | |
208 | xfs_errortag_clearall(xfs_mount_t *mp) | |
209 | { | |
210 | int64_t fsid; | |
211 | ||
212 | memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t)); | |
213 | ||
214 | return xfs_errortag_clearall_umount(fsid, mp->m_fsname, 1); | |
215 | } | |
216 | #endif /* DEBUG || INDUCE_IO_ERROR */ | |
217 | ||
218 | static void | |
219 | xfs_fs_vcmn_err(int level, xfs_mount_t *mp, char *fmt, va_list ap) | |
220 | { | |
221 | if (mp != NULL) { | |
222 | char *newfmt; | |
223 | int len = 16 + mp->m_fsname_len + strlen(fmt); | |
224 | ||
225 | newfmt = kmem_alloc(len, KM_SLEEP); | |
226 | sprintf(newfmt, "Filesystem \"%s\": %s", mp->m_fsname, fmt); | |
227 | icmn_err(level, newfmt, ap); | |
228 | kmem_free(newfmt, len); | |
229 | } else { | |
230 | icmn_err(level, fmt, ap); | |
231 | } | |
232 | } | |
233 | ||
234 | void | |
235 | xfs_fs_cmn_err(int level, xfs_mount_t *mp, char *fmt, ...) | |
236 | { | |
237 | va_list ap; | |
238 | ||
239 | va_start(ap, fmt); | |
240 | xfs_fs_vcmn_err(level, mp, fmt, ap); | |
241 | va_end(ap); | |
242 | } | |
243 | ||
244 | void | |
245 | xfs_cmn_err(int panic_tag, int level, xfs_mount_t *mp, char *fmt, ...) | |
246 | { | |
247 | va_list ap; | |
248 | ||
249 | #ifdef DEBUG | |
250 | xfs_panic_mask |= XFS_PTAG_SHUTDOWN_CORRUPT; | |
251 | #endif | |
252 | ||
253 | if (xfs_panic_mask && (xfs_panic_mask & panic_tag) | |
254 | && (level & CE_ALERT)) { | |
255 | level &= ~CE_ALERT; | |
256 | level |= CE_PANIC; | |
257 | cmn_err(CE_ALERT, "XFS: Transforming an alert into a BUG."); | |
258 | } | |
259 | va_start(ap, fmt); | |
260 | xfs_fs_vcmn_err(level, mp, fmt, ap); | |
261 | va_end(ap); | |
262 | } | |
263 | ||
264 | void | |
265 | xfs_error_report( | |
266 | char *tag, | |
267 | int level, | |
268 | xfs_mount_t *mp, | |
269 | char *fname, | |
270 | int linenum, | |
271 | inst_t *ra) | |
272 | { | |
273 | if (level <= xfs_error_level) { | |
274 | xfs_cmn_err(XFS_PTAG_ERROR_REPORT, | |
275 | CE_ALERT, mp, | |
276 | "XFS internal error %s at line %d of file %s. Caller 0x%p\n", | |
277 | tag, linenum, fname, ra); | |
278 | ||
279 | xfs_stack_trace(); | |
280 | } | |
281 | } | |
282 | ||
ba0f32d4 | 283 | STATIC void |
1da177e4 LT |
284 | xfs_hex_dump(void *p, int length) |
285 | { | |
286 | __uint8_t *uip = (__uint8_t*)p; | |
287 | int i; | |
288 | char sbuf[128], *s; | |
289 | ||
290 | s = sbuf; | |
291 | *s = '\0'; | |
292 | for (i=0; i<length; i++, uip++) { | |
293 | if ((i % 16) == 0) { | |
294 | if (*s != '\0') | |
295 | cmn_err(CE_ALERT, "%s\n", sbuf); | |
296 | s = sbuf; | |
297 | sprintf(s, "0x%x: ", i); | |
298 | while( *s != '\0') | |
299 | s++; | |
300 | } | |
301 | sprintf(s, "%02x ", *uip); | |
302 | ||
303 | /* | |
304 | * the kernel sprintf is a void; user sprintf returns | |
305 | * the sprintf'ed string's length. Find the new end- | |
306 | * of-string | |
307 | */ | |
308 | while( *s != '\0') | |
309 | s++; | |
310 | } | |
311 | cmn_err(CE_ALERT, "%s\n", sbuf); | |
312 | } | |
313 | ||
314 | void | |
315 | xfs_corruption_error( | |
316 | char *tag, | |
317 | int level, | |
318 | xfs_mount_t *mp, | |
319 | void *p, | |
320 | char *fname, | |
321 | int linenum, | |
322 | inst_t *ra) | |
323 | { | |
324 | if (level <= xfs_error_level) | |
325 | xfs_hex_dump(p, 16); | |
326 | xfs_error_report(tag, level, mp, fname, linenum, ra); | |
327 | } |