Commit | Line | Data |
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a31b1d3d BF |
1 | /* |
2 | * Copyright (c) 2014 Red Hat, 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 | ||
19 | #include "xfs.h" | |
192852be | 20 | #include "xfs_shared.h" |
801cc4e1 | 21 | #include "xfs_format.h" |
baff4e44 | 22 | #include "xfs_log_format.h" |
801cc4e1 | 23 | #include "xfs_trans_resv.h" |
192852be | 24 | #include "xfs_sysfs.h" |
baff4e44 BF |
25 | #include "xfs_log.h" |
26 | #include "xfs_log_priv.h" | |
bb230c12 | 27 | #include "xfs_stats.h" |
801cc4e1 | 28 | #include "xfs_mount.h" |
a31b1d3d BF |
29 | |
30 | struct xfs_sysfs_attr { | |
31 | struct attribute attr; | |
a27c2640 BD |
32 | ssize_t (*show)(struct kobject *kobject, char *buf); |
33 | ssize_t (*store)(struct kobject *kobject, const char *buf, | |
34 | size_t count); | |
a31b1d3d BF |
35 | }; |
36 | ||
37 | static inline struct xfs_sysfs_attr * | |
38 | to_attr(struct attribute *attr) | |
39 | { | |
40 | return container_of(attr, struct xfs_sysfs_attr, attr); | |
41 | } | |
42 | ||
43 | #define XFS_SYSFS_ATTR_RW(name) \ | |
44 | static struct xfs_sysfs_attr xfs_sysfs_attr_##name = __ATTR_RW(name) | |
45 | #define XFS_SYSFS_ATTR_RO(name) \ | |
46 | static struct xfs_sysfs_attr xfs_sysfs_attr_##name = __ATTR_RO(name) | |
bb230c12 BD |
47 | #define XFS_SYSFS_ATTR_WO(name) \ |
48 | static struct xfs_sysfs_attr xfs_sysfs_attr_##name = __ATTR_WO(name) | |
a31b1d3d BF |
49 | |
50 | #define ATTR_LIST(name) &xfs_sysfs_attr_##name.attr | |
51 | ||
a27c2640 BD |
52 | STATIC ssize_t |
53 | xfs_sysfs_object_show( | |
54 | struct kobject *kobject, | |
55 | struct attribute *attr, | |
56 | char *buf) | |
57 | { | |
58 | struct xfs_sysfs_attr *xfs_attr = to_attr(attr); | |
59 | ||
60 | return xfs_attr->show ? xfs_attr->show(kobject, buf) : 0; | |
61 | } | |
62 | ||
63 | STATIC ssize_t | |
64 | xfs_sysfs_object_store( | |
65 | struct kobject *kobject, | |
66 | struct attribute *attr, | |
67 | const char *buf, | |
68 | size_t count) | |
69 | { | |
70 | struct xfs_sysfs_attr *xfs_attr = to_attr(attr); | |
71 | ||
72 | return xfs_attr->store ? xfs_attr->store(kobject, buf, count) : 0; | |
73 | } | |
74 | ||
75 | static const struct sysfs_ops xfs_sysfs_ops = { | |
76 | .show = xfs_sysfs_object_show, | |
77 | .store = xfs_sysfs_object_store, | |
78 | }; | |
79 | ||
801cc4e1 BF |
80 | /* |
81 | * xfs_mount kobject. The mp kobject also serves as the per-mount parent object | |
82 | * that is identified by the fsname under sysfs. | |
83 | */ | |
84 | ||
85 | static inline struct xfs_mount * | |
86 | to_mp(struct kobject *kobject) | |
87 | { | |
88 | struct xfs_kobj *kobj = to_kobj(kobject); | |
89 | ||
90 | return container_of(kobj, struct xfs_mount, m_kobj); | |
91 | } | |
92 | ||
801cc4e1 | 93 | static struct attribute *xfs_mp_attrs[] = { |
801cc4e1 BF |
94 | NULL, |
95 | }; | |
96 | ||
97 | struct kobj_type xfs_mp_ktype = { | |
98 | .release = xfs_sysfs_release, | |
99 | .sysfs_ops = &xfs_sysfs_ops, | |
100 | .default_attrs = xfs_mp_attrs, | |
101 | }; | |
102 | ||
65b65735 BF |
103 | #ifdef DEBUG |
104 | /* debug */ | |
105 | ||
ccdab3d6 BF |
106 | STATIC ssize_t |
107 | bug_on_assert_store( | |
108 | struct kobject *kobject, | |
109 | const char *buf, | |
110 | size_t count) | |
111 | { | |
112 | int ret; | |
113 | int val; | |
114 | ||
115 | ret = kstrtoint(buf, 0, &val); | |
116 | if (ret) | |
117 | return ret; | |
118 | ||
119 | if (val == 1) | |
120 | xfs_globals.bug_on_assert = true; | |
121 | else if (val == 0) | |
122 | xfs_globals.bug_on_assert = false; | |
123 | else | |
124 | return -EINVAL; | |
125 | ||
126 | return count; | |
127 | } | |
128 | ||
129 | STATIC ssize_t | |
130 | bug_on_assert_show( | |
131 | struct kobject *kobject, | |
132 | char *buf) | |
133 | { | |
134 | return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.bug_on_assert ? 1 : 0); | |
135 | } | |
136 | XFS_SYSFS_ATTR_RW(bug_on_assert); | |
137 | ||
2e227178 BF |
138 | STATIC ssize_t |
139 | log_recovery_delay_store( | |
a27c2640 | 140 | struct kobject *kobject, |
2e227178 | 141 | const char *buf, |
a27c2640 | 142 | size_t count) |
2e227178 BF |
143 | { |
144 | int ret; | |
145 | int val; | |
146 | ||
147 | ret = kstrtoint(buf, 0, &val); | |
148 | if (ret) | |
149 | return ret; | |
150 | ||
151 | if (val < 0 || val > 60) | |
152 | return -EINVAL; | |
153 | ||
154 | xfs_globals.log_recovery_delay = val; | |
155 | ||
156 | return count; | |
157 | } | |
158 | ||
159 | STATIC ssize_t | |
160 | log_recovery_delay_show( | |
a27c2640 BD |
161 | struct kobject *kobject, |
162 | char *buf) | |
2e227178 BF |
163 | { |
164 | return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.log_recovery_delay); | |
165 | } | |
166 | XFS_SYSFS_ATTR_RW(log_recovery_delay); | |
167 | ||
65b65735 | 168 | static struct attribute *xfs_dbg_attrs[] = { |
ccdab3d6 | 169 | ATTR_LIST(bug_on_assert), |
2e227178 | 170 | ATTR_LIST(log_recovery_delay), |
65b65735 BF |
171 | NULL, |
172 | }; | |
173 | ||
65b65735 BF |
174 | struct kobj_type xfs_dbg_ktype = { |
175 | .release = xfs_sysfs_release, | |
a27c2640 | 176 | .sysfs_ops = &xfs_sysfs_ops, |
65b65735 BF |
177 | .default_attrs = xfs_dbg_attrs, |
178 | }; | |
179 | ||
180 | #endif /* DEBUG */ | |
181 | ||
bb230c12 BD |
182 | /* stats */ |
183 | ||
80529c45 BD |
184 | static inline struct xstats * |
185 | to_xstats(struct kobject *kobject) | |
186 | { | |
187 | struct xfs_kobj *kobj = to_kobj(kobject); | |
188 | ||
189 | return container_of(kobj, struct xstats, xs_kobj); | |
190 | } | |
191 | ||
bb230c12 BD |
192 | STATIC ssize_t |
193 | stats_show( | |
a27c2640 BD |
194 | struct kobject *kobject, |
195 | char *buf) | |
bb230c12 | 196 | { |
80529c45 BD |
197 | struct xstats *stats = to_xstats(kobject); |
198 | ||
199 | return xfs_stats_format(stats->xs_stats, buf); | |
bb230c12 BD |
200 | } |
201 | XFS_SYSFS_ATTR_RO(stats); | |
202 | ||
203 | STATIC ssize_t | |
204 | stats_clear_store( | |
a27c2640 | 205 | struct kobject *kobject, |
bb230c12 | 206 | const char *buf, |
a27c2640 | 207 | size_t count) |
bb230c12 BD |
208 | { |
209 | int ret; | |
210 | int val; | |
80529c45 | 211 | struct xstats *stats = to_xstats(kobject); |
bb230c12 BD |
212 | |
213 | ret = kstrtoint(buf, 0, &val); | |
214 | if (ret) | |
215 | return ret; | |
216 | ||
217 | if (val != 1) | |
218 | return -EINVAL; | |
80529c45 BD |
219 | |
220 | xfs_stats_clearall(stats->xs_stats); | |
bb230c12 BD |
221 | return count; |
222 | } | |
223 | XFS_SYSFS_ATTR_WO(stats_clear); | |
224 | ||
225 | static struct attribute *xfs_stats_attrs[] = { | |
226 | ATTR_LIST(stats), | |
227 | ATTR_LIST(stats_clear), | |
228 | NULL, | |
229 | }; | |
230 | ||
bb230c12 BD |
231 | struct kobj_type xfs_stats_ktype = { |
232 | .release = xfs_sysfs_release, | |
a27c2640 | 233 | .sysfs_ops = &xfs_sysfs_ops, |
bb230c12 BD |
234 | .default_attrs = xfs_stats_attrs, |
235 | }; | |
236 | ||
baff4e44 BF |
237 | /* xlog */ |
238 | ||
a27c2640 BD |
239 | static inline struct xlog * |
240 | to_xlog(struct kobject *kobject) | |
241 | { | |
242 | struct xfs_kobj *kobj = to_kobj(kobject); | |
243 | ||
244 | return container_of(kobj, struct xlog, l_kobj); | |
245 | } | |
246 | ||
80d6d698 BF |
247 | STATIC ssize_t |
248 | log_head_lsn_show( | |
a27c2640 BD |
249 | struct kobject *kobject, |
250 | char *buf) | |
80d6d698 | 251 | { |
80d6d698 BF |
252 | int cycle; |
253 | int block; | |
a27c2640 | 254 | struct xlog *log = to_xlog(kobject); |
80d6d698 BF |
255 | |
256 | spin_lock(&log->l_icloglock); | |
257 | cycle = log->l_curr_cycle; | |
258 | block = log->l_curr_block; | |
259 | spin_unlock(&log->l_icloglock); | |
260 | ||
261 | return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, block); | |
262 | } | |
263 | XFS_SYSFS_ATTR_RO(log_head_lsn); | |
264 | ||
265 | STATIC ssize_t | |
266 | log_tail_lsn_show( | |
a27c2640 BD |
267 | struct kobject *kobject, |
268 | char *buf) | |
80d6d698 | 269 | { |
80d6d698 BF |
270 | int cycle; |
271 | int block; | |
a27c2640 | 272 | struct xlog *log = to_xlog(kobject); |
80d6d698 BF |
273 | |
274 | xlog_crack_atomic_lsn(&log->l_tail_lsn, &cycle, &block); | |
275 | return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, block); | |
276 | } | |
277 | XFS_SYSFS_ATTR_RO(log_tail_lsn); | |
278 | ||
279 | STATIC ssize_t | |
280 | reserve_grant_head_show( | |
a27c2640 BD |
281 | struct kobject *kobject, |
282 | char *buf) | |
283 | ||
80d6d698 | 284 | { |
80d6d698 BF |
285 | int cycle; |
286 | int bytes; | |
a27c2640 | 287 | struct xlog *log = to_xlog(kobject); |
80d6d698 BF |
288 | |
289 | xlog_crack_grant_head(&log->l_reserve_head.grant, &cycle, &bytes); | |
290 | return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, bytes); | |
291 | } | |
292 | XFS_SYSFS_ATTR_RO(reserve_grant_head); | |
293 | ||
294 | STATIC ssize_t | |
295 | write_grant_head_show( | |
a27c2640 BD |
296 | struct kobject *kobject, |
297 | char *buf) | |
80d6d698 | 298 | { |
80d6d698 BF |
299 | int cycle; |
300 | int bytes; | |
a27c2640 | 301 | struct xlog *log = to_xlog(kobject); |
80d6d698 BF |
302 | |
303 | xlog_crack_grant_head(&log->l_write_head.grant, &cycle, &bytes); | |
304 | return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, bytes); | |
305 | } | |
306 | XFS_SYSFS_ATTR_RO(write_grant_head); | |
307 | ||
baff4e44 | 308 | static struct attribute *xfs_log_attrs[] = { |
80d6d698 BF |
309 | ATTR_LIST(log_head_lsn), |
310 | ATTR_LIST(log_tail_lsn), | |
311 | ATTR_LIST(reserve_grant_head), | |
312 | ATTR_LIST(write_grant_head), | |
baff4e44 BF |
313 | NULL, |
314 | }; | |
315 | ||
baff4e44 BF |
316 | struct kobj_type xfs_log_ktype = { |
317 | .release = xfs_sysfs_release, | |
a27c2640 | 318 | .sysfs_ops = &xfs_sysfs_ops, |
baff4e44 BF |
319 | .default_attrs = xfs_log_attrs, |
320 | }; | |
192852be CM |
321 | |
322 | /* | |
323 | * Metadata IO error configuration | |
324 | * | |
325 | * The sysfs structure here is: | |
326 | * ...xfs/<dev>/error/<class>/<errno>/<error_attrs> | |
327 | * | |
328 | * where <class> allows us to discriminate between data IO and metadata IO, | |
329 | * and any other future type of IO (e.g. special inode or directory error | |
330 | * handling) we care to support. | |
331 | */ | |
192852be CM |
332 | static inline struct xfs_error_cfg * |
333 | to_error_cfg(struct kobject *kobject) | |
334 | { | |
335 | struct xfs_kobj *kobj = to_kobj(kobject); | |
336 | return container_of(kobj, struct xfs_error_cfg, kobj); | |
337 | } | |
338 | ||
e6b3bb78 CM |
339 | static inline struct xfs_mount * |
340 | err_to_mp(struct kobject *kobject) | |
341 | { | |
342 | struct xfs_kobj *kobj = to_kobj(kobject); | |
343 | return container_of(kobj, struct xfs_mount, m_error_kobj); | |
344 | } | |
345 | ||
a5ea70d2 CM |
346 | static ssize_t |
347 | max_retries_show( | |
348 | struct kobject *kobject, | |
349 | char *buf) | |
350 | { | |
77169812 | 351 | int retries; |
a5ea70d2 CM |
352 | struct xfs_error_cfg *cfg = to_error_cfg(kobject); |
353 | ||
ff97f239 | 354 | if (cfg->max_retries == XFS_ERR_RETRY_FOREVER) |
77169812 ES |
355 | retries = -1; |
356 | else | |
357 | retries = cfg->max_retries; | |
358 | ||
359 | return snprintf(buf, PAGE_SIZE, "%d\n", retries); | |
a5ea70d2 CM |
360 | } |
361 | ||
362 | static ssize_t | |
363 | max_retries_store( | |
364 | struct kobject *kobject, | |
365 | const char *buf, | |
366 | size_t count) | |
367 | { | |
368 | struct xfs_error_cfg *cfg = to_error_cfg(kobject); | |
369 | int ret; | |
370 | int val; | |
371 | ||
372 | ret = kstrtoint(buf, 0, &val); | |
373 | if (ret) | |
374 | return ret; | |
375 | ||
376 | if (val < -1) | |
377 | return -EINVAL; | |
378 | ||
77169812 | 379 | if (val == -1) |
ff97f239 | 380 | cfg->max_retries = XFS_ERR_RETRY_FOREVER; |
77169812 ES |
381 | else |
382 | cfg->max_retries = val; | |
a5ea70d2 CM |
383 | return count; |
384 | } | |
385 | XFS_SYSFS_ATTR_RW(max_retries); | |
386 | ||
387 | static ssize_t | |
388 | retry_timeout_seconds_show( | |
389 | struct kobject *kobject, | |
390 | char *buf) | |
391 | { | |
77169812 | 392 | int timeout; |
a5ea70d2 CM |
393 | struct xfs_error_cfg *cfg = to_error_cfg(kobject); |
394 | ||
77169812 ES |
395 | if (cfg->retry_timeout == XFS_ERR_RETRY_FOREVER) |
396 | timeout = -1; | |
397 | else | |
398 | timeout = jiffies_to_msecs(cfg->retry_timeout) / MSEC_PER_SEC; | |
399 | ||
400 | return snprintf(buf, PAGE_SIZE, "%d\n", timeout); | |
a5ea70d2 CM |
401 | } |
402 | ||
403 | static ssize_t | |
404 | retry_timeout_seconds_store( | |
405 | struct kobject *kobject, | |
406 | const char *buf, | |
407 | size_t count) | |
408 | { | |
409 | struct xfs_error_cfg *cfg = to_error_cfg(kobject); | |
410 | int ret; | |
411 | int val; | |
412 | ||
413 | ret = kstrtoint(buf, 0, &val); | |
414 | if (ret) | |
415 | return ret; | |
416 | ||
77169812 ES |
417 | /* 1 day timeout maximum, -1 means infinite */ |
418 | if (val < -1 || val > 86400) | |
a5ea70d2 CM |
419 | return -EINVAL; |
420 | ||
77169812 ES |
421 | if (val == -1) |
422 | cfg->retry_timeout = XFS_ERR_RETRY_FOREVER; | |
423 | else { | |
424 | cfg->retry_timeout = msecs_to_jiffies(val * MSEC_PER_SEC); | |
425 | ASSERT(msecs_to_jiffies(val * MSEC_PER_SEC) < LONG_MAX); | |
426 | } | |
a5ea70d2 CM |
427 | return count; |
428 | } | |
429 | XFS_SYSFS_ATTR_RW(retry_timeout_seconds); | |
430 | ||
e6b3bb78 CM |
431 | static ssize_t |
432 | fail_at_unmount_show( | |
433 | struct kobject *kobject, | |
434 | char *buf) | |
435 | { | |
436 | struct xfs_mount *mp = err_to_mp(kobject); | |
437 | ||
438 | return snprintf(buf, PAGE_SIZE, "%d\n", mp->m_fail_unmount); | |
439 | } | |
440 | ||
441 | static ssize_t | |
442 | fail_at_unmount_store( | |
443 | struct kobject *kobject, | |
444 | const char *buf, | |
445 | size_t count) | |
446 | { | |
447 | struct xfs_mount *mp = err_to_mp(kobject); | |
448 | int ret; | |
449 | int val; | |
450 | ||
451 | ret = kstrtoint(buf, 0, &val); | |
452 | if (ret) | |
453 | return ret; | |
454 | ||
455 | if (val < 0 || val > 1) | |
456 | return -EINVAL; | |
457 | ||
458 | mp->m_fail_unmount = val; | |
459 | return count; | |
460 | } | |
461 | XFS_SYSFS_ATTR_RW(fail_at_unmount); | |
462 | ||
a5ea70d2 CM |
463 | static struct attribute *xfs_error_attrs[] = { |
464 | ATTR_LIST(max_retries), | |
465 | ATTR_LIST(retry_timeout_seconds), | |
466 | NULL, | |
467 | }; | |
468 | ||
469 | ||
f1b8243c | 470 | static struct kobj_type xfs_error_cfg_ktype = { |
192852be CM |
471 | .release = xfs_sysfs_release, |
472 | .sysfs_ops = &xfs_sysfs_ops, | |
473 | .default_attrs = xfs_error_attrs, | |
474 | }; | |
475 | ||
f1b8243c | 476 | static struct kobj_type xfs_error_ktype = { |
192852be | 477 | .release = xfs_sysfs_release, |
e6b3bb78 | 478 | .sysfs_ops = &xfs_sysfs_ops, |
192852be CM |
479 | }; |
480 | ||
ef6a50fb CM |
481 | /* |
482 | * Error initialization tables. These need to be ordered in the same | |
483 | * order as the enums used to index the array. All class init tables need to | |
484 | * define a "default" behaviour as the first entry, all other entries can be | |
485 | * empty. | |
486 | */ | |
487 | struct xfs_error_init { | |
488 | char *name; | |
489 | int max_retries; | |
a5ea70d2 | 490 | int retry_timeout; /* in seconds */ |
ef6a50fb CM |
491 | }; |
492 | ||
493 | static const struct xfs_error_init xfs_error_meta_init[XFS_ERR_ERRNO_MAX] = { | |
494 | { .name = "default", | |
e0a431b3 | 495 | .max_retries = XFS_ERR_RETRY_FOREVER, |
77169812 | 496 | .retry_timeout = XFS_ERR_RETRY_FOREVER, |
ef6a50fb | 497 | }, |
e0a431b3 CM |
498 | { .name = "EIO", |
499 | .max_retries = XFS_ERR_RETRY_FOREVER, | |
77169812 | 500 | .retry_timeout = XFS_ERR_RETRY_FOREVER, |
e0a431b3 CM |
501 | }, |
502 | { .name = "ENOSPC", | |
503 | .max_retries = XFS_ERR_RETRY_FOREVER, | |
77169812 | 504 | .retry_timeout = XFS_ERR_RETRY_FOREVER, |
e0a431b3 CM |
505 | }, |
506 | { .name = "ENODEV", | |
77169812 ES |
507 | .max_retries = 0, /* We can't recover from devices disappearing */ |
508 | .retry_timeout = 0, | |
e0a431b3 | 509 | }, |
ef6a50fb CM |
510 | }; |
511 | ||
512 | static int | |
513 | xfs_error_sysfs_init_class( | |
514 | struct xfs_mount *mp, | |
515 | int class, | |
516 | const char *parent_name, | |
517 | struct xfs_kobj *parent_kobj, | |
518 | const struct xfs_error_init init[]) | |
519 | { | |
520 | struct xfs_error_cfg *cfg; | |
521 | int error; | |
522 | int i; | |
523 | ||
524 | ASSERT(class < XFS_ERR_CLASS_MAX); | |
525 | ||
526 | error = xfs_sysfs_init(parent_kobj, &xfs_error_ktype, | |
527 | &mp->m_error_kobj, parent_name); | |
528 | if (error) | |
529 | return error; | |
530 | ||
531 | for (i = 0; i < XFS_ERR_ERRNO_MAX; i++) { | |
532 | cfg = &mp->m_error_cfg[class][i]; | |
533 | error = xfs_sysfs_init(&cfg->kobj, &xfs_error_cfg_ktype, | |
534 | parent_kobj, init[i].name); | |
535 | if (error) | |
536 | goto out_error; | |
537 | ||
538 | cfg->max_retries = init[i].max_retries; | |
77169812 ES |
539 | if (init[i].retry_timeout == XFS_ERR_RETRY_FOREVER) |
540 | cfg->retry_timeout = XFS_ERR_RETRY_FOREVER; | |
541 | else | |
542 | cfg->retry_timeout = msecs_to_jiffies( | |
a5ea70d2 | 543 | init[i].retry_timeout * MSEC_PER_SEC); |
ef6a50fb CM |
544 | } |
545 | return 0; | |
546 | ||
547 | out_error: | |
548 | /* unwind the entries that succeeded */ | |
549 | for (i--; i >= 0; i--) { | |
550 | cfg = &mp->m_error_cfg[class][i]; | |
551 | xfs_sysfs_del(&cfg->kobj); | |
552 | } | |
553 | xfs_sysfs_del(parent_kobj); | |
554 | return error; | |
555 | } | |
556 | ||
192852be CM |
557 | int |
558 | xfs_error_sysfs_init( | |
559 | struct xfs_mount *mp) | |
560 | { | |
561 | int error; | |
562 | ||
563 | /* .../xfs/<dev>/error/ */ | |
564 | error = xfs_sysfs_init(&mp->m_error_kobj, &xfs_error_ktype, | |
565 | &mp->m_kobj, "error"); | |
ffd40ef6 CM |
566 | if (error) |
567 | return error; | |
568 | ||
e6b3bb78 CM |
569 | error = sysfs_create_file(&mp->m_error_kobj.kobject, |
570 | ATTR_LIST(fail_at_unmount)); | |
571 | ||
572 | if (error) | |
573 | goto out_error; | |
574 | ||
ffd40ef6 | 575 | /* .../xfs/<dev>/error/metadata/ */ |
ef6a50fb CM |
576 | error = xfs_error_sysfs_init_class(mp, XFS_ERR_METADATA, |
577 | "metadata", &mp->m_error_meta_kobj, | |
578 | xfs_error_meta_init); | |
ffd40ef6 CM |
579 | if (error) |
580 | goto out_error; | |
581 | ||
ffd40ef6 CM |
582 | return 0; |
583 | ||
ffd40ef6 CM |
584 | out_error: |
585 | xfs_sysfs_del(&mp->m_error_kobj); | |
192852be CM |
586 | return error; |
587 | } | |
588 | ||
589 | void | |
590 | xfs_error_sysfs_del( | |
591 | struct xfs_mount *mp) | |
592 | { | |
ffd40ef6 CM |
593 | struct xfs_error_cfg *cfg; |
594 | int i, j; | |
595 | ||
596 | for (i = 0; i < XFS_ERR_CLASS_MAX; i++) { | |
597 | for (j = 0; j < XFS_ERR_ERRNO_MAX; j++) { | |
598 | cfg = &mp->m_error_cfg[i][j]; | |
599 | ||
600 | xfs_sysfs_del(&cfg->kobj); | |
601 | } | |
602 | } | |
603 | xfs_sysfs_del(&mp->m_error_meta_kobj); | |
192852be CM |
604 | xfs_sysfs_del(&mp->m_error_kobj); |
605 | } | |
df309390 CM |
606 | |
607 | struct xfs_error_cfg * | |
608 | xfs_error_get_cfg( | |
609 | struct xfs_mount *mp, | |
610 | int error_class, | |
611 | int error) | |
612 | { | |
613 | struct xfs_error_cfg *cfg; | |
614 | ||
e97f6c54 ES |
615 | if (error < 0) |
616 | error = -error; | |
617 | ||
df309390 | 618 | switch (error) { |
e0a431b3 CM |
619 | case EIO: |
620 | cfg = &mp->m_error_cfg[error_class][XFS_ERR_EIO]; | |
621 | break; | |
622 | case ENOSPC: | |
623 | cfg = &mp->m_error_cfg[error_class][XFS_ERR_ENOSPC]; | |
624 | break; | |
625 | case ENODEV: | |
626 | cfg = &mp->m_error_cfg[error_class][XFS_ERR_ENODEV]; | |
627 | break; | |
df309390 CM |
628 | default: |
629 | cfg = &mp->m_error_cfg[error_class][XFS_ERR_DEFAULT]; | |
630 | break; | |
631 | } | |
632 | ||
633 | return cfg; | |
634 | } |