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 | ||
93 | #ifdef DEBUG | |
94 | ||
95 | STATIC ssize_t | |
9dbddd7b | 96 | drop_writes_store( |
801cc4e1 BF |
97 | struct kobject *kobject, |
98 | const char *buf, | |
99 | size_t count) | |
100 | { | |
101 | struct xfs_mount *mp = to_mp(kobject); | |
102 | int ret; | |
103 | int val; | |
104 | ||
105 | ret = kstrtoint(buf, 0, &val); | |
106 | if (ret) | |
107 | return ret; | |
108 | ||
109 | if (val == 1) | |
9dbddd7b | 110 | mp->m_drop_writes = true; |
801cc4e1 | 111 | else if (val == 0) |
9dbddd7b | 112 | mp->m_drop_writes = false; |
801cc4e1 BF |
113 | else |
114 | return -EINVAL; | |
115 | ||
116 | return count; | |
117 | } | |
118 | ||
119 | STATIC ssize_t | |
9dbddd7b | 120 | drop_writes_show( |
801cc4e1 BF |
121 | struct kobject *kobject, |
122 | char *buf) | |
123 | { | |
124 | struct xfs_mount *mp = to_mp(kobject); | |
125 | ||
9dbddd7b | 126 | return snprintf(buf, PAGE_SIZE, "%d\n", mp->m_drop_writes ? 1 : 0); |
801cc4e1 | 127 | } |
9dbddd7b | 128 | XFS_SYSFS_ATTR_RW(drop_writes); |
801cc4e1 BF |
129 | |
130 | #endif /* DEBUG */ | |
131 | ||
132 | static struct attribute *xfs_mp_attrs[] = { | |
133 | #ifdef DEBUG | |
9dbddd7b | 134 | ATTR_LIST(drop_writes), |
801cc4e1 BF |
135 | #endif |
136 | NULL, | |
137 | }; | |
138 | ||
139 | struct kobj_type xfs_mp_ktype = { | |
140 | .release = xfs_sysfs_release, | |
141 | .sysfs_ops = &xfs_sysfs_ops, | |
142 | .default_attrs = xfs_mp_attrs, | |
143 | }; | |
144 | ||
65b65735 BF |
145 | #ifdef DEBUG |
146 | /* debug */ | |
147 | ||
2e227178 BF |
148 | STATIC ssize_t |
149 | log_recovery_delay_store( | |
a27c2640 | 150 | struct kobject *kobject, |
2e227178 | 151 | const char *buf, |
a27c2640 | 152 | size_t count) |
2e227178 BF |
153 | { |
154 | int ret; | |
155 | int val; | |
156 | ||
157 | ret = kstrtoint(buf, 0, &val); | |
158 | if (ret) | |
159 | return ret; | |
160 | ||
161 | if (val < 0 || val > 60) | |
162 | return -EINVAL; | |
163 | ||
164 | xfs_globals.log_recovery_delay = val; | |
165 | ||
166 | return count; | |
167 | } | |
168 | ||
169 | STATIC ssize_t | |
170 | log_recovery_delay_show( | |
a27c2640 BD |
171 | struct kobject *kobject, |
172 | char *buf) | |
2e227178 BF |
173 | { |
174 | return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.log_recovery_delay); | |
175 | } | |
176 | XFS_SYSFS_ATTR_RW(log_recovery_delay); | |
177 | ||
65b65735 | 178 | static struct attribute *xfs_dbg_attrs[] = { |
2e227178 | 179 | ATTR_LIST(log_recovery_delay), |
65b65735 BF |
180 | NULL, |
181 | }; | |
182 | ||
65b65735 BF |
183 | struct kobj_type xfs_dbg_ktype = { |
184 | .release = xfs_sysfs_release, | |
a27c2640 | 185 | .sysfs_ops = &xfs_sysfs_ops, |
65b65735 BF |
186 | .default_attrs = xfs_dbg_attrs, |
187 | }; | |
188 | ||
189 | #endif /* DEBUG */ | |
190 | ||
bb230c12 BD |
191 | /* stats */ |
192 | ||
80529c45 BD |
193 | static inline struct xstats * |
194 | to_xstats(struct kobject *kobject) | |
195 | { | |
196 | struct xfs_kobj *kobj = to_kobj(kobject); | |
197 | ||
198 | return container_of(kobj, struct xstats, xs_kobj); | |
199 | } | |
200 | ||
bb230c12 BD |
201 | STATIC ssize_t |
202 | stats_show( | |
a27c2640 BD |
203 | struct kobject *kobject, |
204 | char *buf) | |
bb230c12 | 205 | { |
80529c45 BD |
206 | struct xstats *stats = to_xstats(kobject); |
207 | ||
208 | return xfs_stats_format(stats->xs_stats, buf); | |
bb230c12 BD |
209 | } |
210 | XFS_SYSFS_ATTR_RO(stats); | |
211 | ||
212 | STATIC ssize_t | |
213 | stats_clear_store( | |
a27c2640 | 214 | struct kobject *kobject, |
bb230c12 | 215 | const char *buf, |
a27c2640 | 216 | size_t count) |
bb230c12 BD |
217 | { |
218 | int ret; | |
219 | int val; | |
80529c45 | 220 | struct xstats *stats = to_xstats(kobject); |
bb230c12 BD |
221 | |
222 | ret = kstrtoint(buf, 0, &val); | |
223 | if (ret) | |
224 | return ret; | |
225 | ||
226 | if (val != 1) | |
227 | return -EINVAL; | |
80529c45 BD |
228 | |
229 | xfs_stats_clearall(stats->xs_stats); | |
bb230c12 BD |
230 | return count; |
231 | } | |
232 | XFS_SYSFS_ATTR_WO(stats_clear); | |
233 | ||
234 | static struct attribute *xfs_stats_attrs[] = { | |
235 | ATTR_LIST(stats), | |
236 | ATTR_LIST(stats_clear), | |
237 | NULL, | |
238 | }; | |
239 | ||
bb230c12 BD |
240 | struct kobj_type xfs_stats_ktype = { |
241 | .release = xfs_sysfs_release, | |
a27c2640 | 242 | .sysfs_ops = &xfs_sysfs_ops, |
bb230c12 BD |
243 | .default_attrs = xfs_stats_attrs, |
244 | }; | |
245 | ||
baff4e44 BF |
246 | /* xlog */ |
247 | ||
a27c2640 BD |
248 | static inline struct xlog * |
249 | to_xlog(struct kobject *kobject) | |
250 | { | |
251 | struct xfs_kobj *kobj = to_kobj(kobject); | |
252 | ||
253 | return container_of(kobj, struct xlog, l_kobj); | |
254 | } | |
255 | ||
80d6d698 BF |
256 | STATIC ssize_t |
257 | log_head_lsn_show( | |
a27c2640 BD |
258 | struct kobject *kobject, |
259 | char *buf) | |
80d6d698 | 260 | { |
80d6d698 BF |
261 | int cycle; |
262 | int block; | |
a27c2640 | 263 | struct xlog *log = to_xlog(kobject); |
80d6d698 BF |
264 | |
265 | spin_lock(&log->l_icloglock); | |
266 | cycle = log->l_curr_cycle; | |
267 | block = log->l_curr_block; | |
268 | spin_unlock(&log->l_icloglock); | |
269 | ||
270 | return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, block); | |
271 | } | |
272 | XFS_SYSFS_ATTR_RO(log_head_lsn); | |
273 | ||
274 | STATIC ssize_t | |
275 | log_tail_lsn_show( | |
a27c2640 BD |
276 | struct kobject *kobject, |
277 | char *buf) | |
80d6d698 | 278 | { |
80d6d698 BF |
279 | int cycle; |
280 | int block; | |
a27c2640 | 281 | struct xlog *log = to_xlog(kobject); |
80d6d698 BF |
282 | |
283 | xlog_crack_atomic_lsn(&log->l_tail_lsn, &cycle, &block); | |
284 | return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, block); | |
285 | } | |
286 | XFS_SYSFS_ATTR_RO(log_tail_lsn); | |
287 | ||
288 | STATIC ssize_t | |
289 | reserve_grant_head_show( | |
a27c2640 BD |
290 | struct kobject *kobject, |
291 | char *buf) | |
292 | ||
80d6d698 | 293 | { |
80d6d698 BF |
294 | int cycle; |
295 | int bytes; | |
a27c2640 | 296 | struct xlog *log = to_xlog(kobject); |
80d6d698 BF |
297 | |
298 | xlog_crack_grant_head(&log->l_reserve_head.grant, &cycle, &bytes); | |
299 | return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, bytes); | |
300 | } | |
301 | XFS_SYSFS_ATTR_RO(reserve_grant_head); | |
302 | ||
303 | STATIC ssize_t | |
304 | write_grant_head_show( | |
a27c2640 BD |
305 | struct kobject *kobject, |
306 | char *buf) | |
80d6d698 | 307 | { |
80d6d698 BF |
308 | int cycle; |
309 | int bytes; | |
a27c2640 | 310 | struct xlog *log = to_xlog(kobject); |
80d6d698 BF |
311 | |
312 | xlog_crack_grant_head(&log->l_write_head.grant, &cycle, &bytes); | |
313 | return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, bytes); | |
314 | } | |
315 | XFS_SYSFS_ATTR_RO(write_grant_head); | |
316 | ||
609adfc2 BF |
317 | #ifdef DEBUG |
318 | STATIC ssize_t | |
319 | log_badcrc_factor_store( | |
320 | struct kobject *kobject, | |
321 | const char *buf, | |
322 | size_t count) | |
323 | { | |
324 | struct xlog *log = to_xlog(kobject); | |
325 | int ret; | |
326 | uint32_t val; | |
327 | ||
328 | ret = kstrtouint(buf, 0, &val); | |
329 | if (ret) | |
330 | return ret; | |
331 | ||
332 | log->l_badcrc_factor = val; | |
333 | ||
334 | return count; | |
335 | } | |
336 | ||
337 | STATIC ssize_t | |
338 | log_badcrc_factor_show( | |
339 | struct kobject *kobject, | |
340 | char *buf) | |
341 | { | |
342 | struct xlog *log = to_xlog(kobject); | |
343 | ||
344 | return snprintf(buf, PAGE_SIZE, "%d\n", log->l_badcrc_factor); | |
345 | } | |
346 | ||
347 | XFS_SYSFS_ATTR_RW(log_badcrc_factor); | |
348 | #endif /* DEBUG */ | |
349 | ||
baff4e44 | 350 | static struct attribute *xfs_log_attrs[] = { |
80d6d698 BF |
351 | ATTR_LIST(log_head_lsn), |
352 | ATTR_LIST(log_tail_lsn), | |
353 | ATTR_LIST(reserve_grant_head), | |
354 | ATTR_LIST(write_grant_head), | |
609adfc2 BF |
355 | #ifdef DEBUG |
356 | ATTR_LIST(log_badcrc_factor), | |
357 | #endif | |
baff4e44 BF |
358 | NULL, |
359 | }; | |
360 | ||
baff4e44 BF |
361 | struct kobj_type xfs_log_ktype = { |
362 | .release = xfs_sysfs_release, | |
a27c2640 | 363 | .sysfs_ops = &xfs_sysfs_ops, |
baff4e44 BF |
364 | .default_attrs = xfs_log_attrs, |
365 | }; | |
192852be CM |
366 | |
367 | /* | |
368 | * Metadata IO error configuration | |
369 | * | |
370 | * The sysfs structure here is: | |
371 | * ...xfs/<dev>/error/<class>/<errno>/<error_attrs> | |
372 | * | |
373 | * where <class> allows us to discriminate between data IO and metadata IO, | |
374 | * and any other future type of IO (e.g. special inode or directory error | |
375 | * handling) we care to support. | |
376 | */ | |
192852be CM |
377 | static inline struct xfs_error_cfg * |
378 | to_error_cfg(struct kobject *kobject) | |
379 | { | |
380 | struct xfs_kobj *kobj = to_kobj(kobject); | |
381 | return container_of(kobj, struct xfs_error_cfg, kobj); | |
382 | } | |
383 | ||
e6b3bb78 CM |
384 | static inline struct xfs_mount * |
385 | err_to_mp(struct kobject *kobject) | |
386 | { | |
387 | struct xfs_kobj *kobj = to_kobj(kobject); | |
388 | return container_of(kobj, struct xfs_mount, m_error_kobj); | |
389 | } | |
390 | ||
a5ea70d2 CM |
391 | static ssize_t |
392 | max_retries_show( | |
393 | struct kobject *kobject, | |
394 | char *buf) | |
395 | { | |
77169812 | 396 | int retries; |
a5ea70d2 CM |
397 | struct xfs_error_cfg *cfg = to_error_cfg(kobject); |
398 | ||
ff97f239 | 399 | if (cfg->max_retries == XFS_ERR_RETRY_FOREVER) |
77169812 ES |
400 | retries = -1; |
401 | else | |
402 | retries = cfg->max_retries; | |
403 | ||
404 | return snprintf(buf, PAGE_SIZE, "%d\n", retries); | |
a5ea70d2 CM |
405 | } |
406 | ||
407 | static ssize_t | |
408 | max_retries_store( | |
409 | struct kobject *kobject, | |
410 | const char *buf, | |
411 | size_t count) | |
412 | { | |
413 | struct xfs_error_cfg *cfg = to_error_cfg(kobject); | |
414 | int ret; | |
415 | int val; | |
416 | ||
417 | ret = kstrtoint(buf, 0, &val); | |
418 | if (ret) | |
419 | return ret; | |
420 | ||
421 | if (val < -1) | |
422 | return -EINVAL; | |
423 | ||
77169812 | 424 | if (val == -1) |
ff97f239 | 425 | cfg->max_retries = XFS_ERR_RETRY_FOREVER; |
77169812 ES |
426 | else |
427 | cfg->max_retries = val; | |
a5ea70d2 CM |
428 | return count; |
429 | } | |
430 | XFS_SYSFS_ATTR_RW(max_retries); | |
431 | ||
432 | static ssize_t | |
433 | retry_timeout_seconds_show( | |
434 | struct kobject *kobject, | |
435 | char *buf) | |
436 | { | |
77169812 | 437 | int timeout; |
a5ea70d2 CM |
438 | struct xfs_error_cfg *cfg = to_error_cfg(kobject); |
439 | ||
77169812 ES |
440 | if (cfg->retry_timeout == XFS_ERR_RETRY_FOREVER) |
441 | timeout = -1; | |
442 | else | |
443 | timeout = jiffies_to_msecs(cfg->retry_timeout) / MSEC_PER_SEC; | |
444 | ||
445 | return snprintf(buf, PAGE_SIZE, "%d\n", timeout); | |
a5ea70d2 CM |
446 | } |
447 | ||
448 | static ssize_t | |
449 | retry_timeout_seconds_store( | |
450 | struct kobject *kobject, | |
451 | const char *buf, | |
452 | size_t count) | |
453 | { | |
454 | struct xfs_error_cfg *cfg = to_error_cfg(kobject); | |
455 | int ret; | |
456 | int val; | |
457 | ||
458 | ret = kstrtoint(buf, 0, &val); | |
459 | if (ret) | |
460 | return ret; | |
461 | ||
77169812 ES |
462 | /* 1 day timeout maximum, -1 means infinite */ |
463 | if (val < -1 || val > 86400) | |
a5ea70d2 CM |
464 | return -EINVAL; |
465 | ||
77169812 ES |
466 | if (val == -1) |
467 | cfg->retry_timeout = XFS_ERR_RETRY_FOREVER; | |
468 | else { | |
469 | cfg->retry_timeout = msecs_to_jiffies(val * MSEC_PER_SEC); | |
470 | ASSERT(msecs_to_jiffies(val * MSEC_PER_SEC) < LONG_MAX); | |
471 | } | |
a5ea70d2 CM |
472 | return count; |
473 | } | |
474 | XFS_SYSFS_ATTR_RW(retry_timeout_seconds); | |
475 | ||
e6b3bb78 CM |
476 | static ssize_t |
477 | fail_at_unmount_show( | |
478 | struct kobject *kobject, | |
479 | char *buf) | |
480 | { | |
481 | struct xfs_mount *mp = err_to_mp(kobject); | |
482 | ||
483 | return snprintf(buf, PAGE_SIZE, "%d\n", mp->m_fail_unmount); | |
484 | } | |
485 | ||
486 | static ssize_t | |
487 | fail_at_unmount_store( | |
488 | struct kobject *kobject, | |
489 | const char *buf, | |
490 | size_t count) | |
491 | { | |
492 | struct xfs_mount *mp = err_to_mp(kobject); | |
493 | int ret; | |
494 | int val; | |
495 | ||
496 | ret = kstrtoint(buf, 0, &val); | |
497 | if (ret) | |
498 | return ret; | |
499 | ||
500 | if (val < 0 || val > 1) | |
501 | return -EINVAL; | |
502 | ||
503 | mp->m_fail_unmount = val; | |
504 | return count; | |
505 | } | |
506 | XFS_SYSFS_ATTR_RW(fail_at_unmount); | |
507 | ||
a5ea70d2 CM |
508 | static struct attribute *xfs_error_attrs[] = { |
509 | ATTR_LIST(max_retries), | |
510 | ATTR_LIST(retry_timeout_seconds), | |
511 | NULL, | |
512 | }; | |
513 | ||
514 | ||
f1b8243c | 515 | static struct kobj_type xfs_error_cfg_ktype = { |
192852be CM |
516 | .release = xfs_sysfs_release, |
517 | .sysfs_ops = &xfs_sysfs_ops, | |
518 | .default_attrs = xfs_error_attrs, | |
519 | }; | |
520 | ||
f1b8243c | 521 | static struct kobj_type xfs_error_ktype = { |
192852be | 522 | .release = xfs_sysfs_release, |
e6b3bb78 | 523 | .sysfs_ops = &xfs_sysfs_ops, |
192852be CM |
524 | }; |
525 | ||
ef6a50fb CM |
526 | /* |
527 | * Error initialization tables. These need to be ordered in the same | |
528 | * order as the enums used to index the array. All class init tables need to | |
529 | * define a "default" behaviour as the first entry, all other entries can be | |
530 | * empty. | |
531 | */ | |
532 | struct xfs_error_init { | |
533 | char *name; | |
534 | int max_retries; | |
a5ea70d2 | 535 | int retry_timeout; /* in seconds */ |
ef6a50fb CM |
536 | }; |
537 | ||
538 | static const struct xfs_error_init xfs_error_meta_init[XFS_ERR_ERRNO_MAX] = { | |
539 | { .name = "default", | |
e0a431b3 | 540 | .max_retries = XFS_ERR_RETRY_FOREVER, |
77169812 | 541 | .retry_timeout = XFS_ERR_RETRY_FOREVER, |
ef6a50fb | 542 | }, |
e0a431b3 CM |
543 | { .name = "EIO", |
544 | .max_retries = XFS_ERR_RETRY_FOREVER, | |
77169812 | 545 | .retry_timeout = XFS_ERR_RETRY_FOREVER, |
e0a431b3 CM |
546 | }, |
547 | { .name = "ENOSPC", | |
548 | .max_retries = XFS_ERR_RETRY_FOREVER, | |
77169812 | 549 | .retry_timeout = XFS_ERR_RETRY_FOREVER, |
e0a431b3 CM |
550 | }, |
551 | { .name = "ENODEV", | |
77169812 ES |
552 | .max_retries = 0, /* We can't recover from devices disappearing */ |
553 | .retry_timeout = 0, | |
e0a431b3 | 554 | }, |
ef6a50fb CM |
555 | }; |
556 | ||
557 | static int | |
558 | xfs_error_sysfs_init_class( | |
559 | struct xfs_mount *mp, | |
560 | int class, | |
561 | const char *parent_name, | |
562 | struct xfs_kobj *parent_kobj, | |
563 | const struct xfs_error_init init[]) | |
564 | { | |
565 | struct xfs_error_cfg *cfg; | |
566 | int error; | |
567 | int i; | |
568 | ||
569 | ASSERT(class < XFS_ERR_CLASS_MAX); | |
570 | ||
571 | error = xfs_sysfs_init(parent_kobj, &xfs_error_ktype, | |
572 | &mp->m_error_kobj, parent_name); | |
573 | if (error) | |
574 | return error; | |
575 | ||
576 | for (i = 0; i < XFS_ERR_ERRNO_MAX; i++) { | |
577 | cfg = &mp->m_error_cfg[class][i]; | |
578 | error = xfs_sysfs_init(&cfg->kobj, &xfs_error_cfg_ktype, | |
579 | parent_kobj, init[i].name); | |
580 | if (error) | |
581 | goto out_error; | |
582 | ||
583 | cfg->max_retries = init[i].max_retries; | |
77169812 ES |
584 | if (init[i].retry_timeout == XFS_ERR_RETRY_FOREVER) |
585 | cfg->retry_timeout = XFS_ERR_RETRY_FOREVER; | |
586 | else | |
587 | cfg->retry_timeout = msecs_to_jiffies( | |
a5ea70d2 | 588 | init[i].retry_timeout * MSEC_PER_SEC); |
ef6a50fb CM |
589 | } |
590 | return 0; | |
591 | ||
592 | out_error: | |
593 | /* unwind the entries that succeeded */ | |
594 | for (i--; i >= 0; i--) { | |
595 | cfg = &mp->m_error_cfg[class][i]; | |
596 | xfs_sysfs_del(&cfg->kobj); | |
597 | } | |
598 | xfs_sysfs_del(parent_kobj); | |
599 | return error; | |
600 | } | |
601 | ||
192852be CM |
602 | int |
603 | xfs_error_sysfs_init( | |
604 | struct xfs_mount *mp) | |
605 | { | |
606 | int error; | |
607 | ||
608 | /* .../xfs/<dev>/error/ */ | |
609 | error = xfs_sysfs_init(&mp->m_error_kobj, &xfs_error_ktype, | |
610 | &mp->m_kobj, "error"); | |
ffd40ef6 CM |
611 | if (error) |
612 | return error; | |
613 | ||
e6b3bb78 CM |
614 | error = sysfs_create_file(&mp->m_error_kobj.kobject, |
615 | ATTR_LIST(fail_at_unmount)); | |
616 | ||
617 | if (error) | |
618 | goto out_error; | |
619 | ||
ffd40ef6 | 620 | /* .../xfs/<dev>/error/metadata/ */ |
ef6a50fb CM |
621 | error = xfs_error_sysfs_init_class(mp, XFS_ERR_METADATA, |
622 | "metadata", &mp->m_error_meta_kobj, | |
623 | xfs_error_meta_init); | |
ffd40ef6 CM |
624 | if (error) |
625 | goto out_error; | |
626 | ||
ffd40ef6 CM |
627 | return 0; |
628 | ||
ffd40ef6 CM |
629 | out_error: |
630 | xfs_sysfs_del(&mp->m_error_kobj); | |
192852be CM |
631 | return error; |
632 | } | |
633 | ||
634 | void | |
635 | xfs_error_sysfs_del( | |
636 | struct xfs_mount *mp) | |
637 | { | |
ffd40ef6 CM |
638 | struct xfs_error_cfg *cfg; |
639 | int i, j; | |
640 | ||
641 | for (i = 0; i < XFS_ERR_CLASS_MAX; i++) { | |
642 | for (j = 0; j < XFS_ERR_ERRNO_MAX; j++) { | |
643 | cfg = &mp->m_error_cfg[i][j]; | |
644 | ||
645 | xfs_sysfs_del(&cfg->kobj); | |
646 | } | |
647 | } | |
648 | xfs_sysfs_del(&mp->m_error_meta_kobj); | |
192852be CM |
649 | xfs_sysfs_del(&mp->m_error_kobj); |
650 | } | |
df309390 CM |
651 | |
652 | struct xfs_error_cfg * | |
653 | xfs_error_get_cfg( | |
654 | struct xfs_mount *mp, | |
655 | int error_class, | |
656 | int error) | |
657 | { | |
658 | struct xfs_error_cfg *cfg; | |
659 | ||
e97f6c54 ES |
660 | if (error < 0) |
661 | error = -error; | |
662 | ||
df309390 | 663 | switch (error) { |
e0a431b3 CM |
664 | case EIO: |
665 | cfg = &mp->m_error_cfg[error_class][XFS_ERR_EIO]; | |
666 | break; | |
667 | case ENOSPC: | |
668 | cfg = &mp->m_error_cfg[error_class][XFS_ERR_ENOSPC]; | |
669 | break; | |
670 | case ENODEV: | |
671 | cfg = &mp->m_error_cfg[error_class][XFS_ERR_ENODEV]; | |
672 | break; | |
df309390 CM |
673 | default: |
674 | cfg = &mp->m_error_cfg[error_class][XFS_ERR_DEFAULT]; | |
675 | break; | |
676 | } | |
677 | ||
678 | return cfg; | |
679 | } |