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Commit | Line | Data |
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b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3a8a9a10 | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
4 | * |
5 | * This copyrighted material is made available to anyone wishing to use, | |
6 | * modify, copy, or redistribute it subject to the terms and conditions | |
e9fc2aa0 | 7 | * of the GNU General Public License version 2. |
b3b94faa DT |
8 | */ |
9 | ||
10 | #include <linux/sched.h> | |
11 | #include <linux/slab.h> | |
12 | #include <linux/spinlock.h> | |
13 | #include <linux/completion.h> | |
14 | #include <linux/buffer_head.h> | |
15 | #include <linux/module.h> | |
16 | #include <linux/kobject.h> | |
5c676f6d | 17 | #include <linux/gfs2_ondisk.h> |
7d308590 | 18 | #include <linux/lm_interface.h> |
b3b94faa DT |
19 | #include <asm/uaccess.h> |
20 | ||
21 | #include "gfs2.h" | |
5c676f6d | 22 | #include "incore.h" |
b3b94faa DT |
23 | #include "lm.h" |
24 | #include "sys.h" | |
25 | #include "super.h" | |
26 | #include "glock.h" | |
27 | #include "quota.h" | |
5c676f6d | 28 | #include "util.h" |
b3b94faa DT |
29 | |
30 | char *gfs2_sys_margs; | |
31 | spinlock_t gfs2_sys_margs_lock; | |
32 | ||
33 | static ssize_t id_show(struct gfs2_sbd *sdp, char *buf) | |
34 | { | |
c7227e46 BP |
35 | return snprintf(buf, PAGE_SIZE, "%u:%u\n", |
36 | MAJOR(sdp->sd_vfs->s_dev), MINOR(sdp->sd_vfs->s_dev)); | |
b3b94faa DT |
37 | } |
38 | ||
39 | static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf) | |
40 | { | |
3204a6c0 | 41 | return snprintf(buf, PAGE_SIZE, "%s\n", sdp->sd_fsname); |
b3b94faa DT |
42 | } |
43 | ||
44 | static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) | |
45 | { | |
46 | unsigned int count; | |
47 | ||
f55ab26a | 48 | mutex_lock(&sdp->sd_freeze_lock); |
b3b94faa | 49 | count = sdp->sd_freeze_count; |
f55ab26a | 50 | mutex_unlock(&sdp->sd_freeze_lock); |
b3b94faa | 51 | |
3204a6c0 | 52 | return snprintf(buf, PAGE_SIZE, "%u\n", count); |
b3b94faa DT |
53 | } |
54 | ||
55 | static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
56 | { | |
57 | ssize_t ret = len; | |
58 | int error = 0; | |
59 | int n = simple_strtol(buf, NULL, 0); | |
60 | ||
61 | if (!capable(CAP_SYS_ADMIN)) | |
62 | return -EACCES; | |
63 | ||
64 | switch (n) { | |
65 | case 0: | |
66 | gfs2_unfreeze_fs(sdp); | |
67 | break; | |
68 | case 1: | |
69 | error = gfs2_freeze_fs(sdp); | |
70 | break; | |
71 | default: | |
72 | ret = -EINVAL; | |
73 | } | |
74 | ||
75 | if (error) | |
76 | fs_warn(sdp, "freeze %d error %d", n, error); | |
77 | ||
78 | return ret; | |
79 | } | |
80 | ||
81 | static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf) | |
82 | { | |
83 | unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags); | |
3204a6c0 | 84 | return snprintf(buf, PAGE_SIZE, "%u\n", b); |
b3b94faa DT |
85 | } |
86 | ||
87 | static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
88 | { | |
89 | if (!capable(CAP_SYS_ADMIN)) | |
90 | return -EACCES; | |
91 | ||
92 | if (simple_strtol(buf, NULL, 0) != 1) | |
93 | return -EINVAL; | |
94 | ||
95 | gfs2_lm_withdraw(sdp, | |
96 | "GFS2: fsid=%s: withdrawing from cluster at user's request\n", | |
97 | sdp->sd_fsname); | |
98 | return len; | |
99 | } | |
100 | ||
101 | static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, | |
102 | size_t len) | |
103 | { | |
104 | if (!capable(CAP_SYS_ADMIN)) | |
105 | return -EACCES; | |
106 | ||
107 | if (simple_strtol(buf, NULL, 0) != 1) | |
108 | return -EINVAL; | |
109 | ||
110 | gfs2_statfs_sync(sdp); | |
111 | return len; | |
112 | } | |
113 | ||
114 | static ssize_t shrink_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
115 | { | |
116 | if (!capable(CAP_SYS_ADMIN)) | |
117 | return -EACCES; | |
118 | ||
119 | if (simple_strtol(buf, NULL, 0) != 1) | |
120 | return -EINVAL; | |
121 | ||
122 | gfs2_gl_hash_clear(sdp, NO_WAIT); | |
123 | return len; | |
124 | } | |
125 | ||
126 | static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, | |
127 | size_t len) | |
128 | { | |
129 | if (!capable(CAP_SYS_ADMIN)) | |
130 | return -EACCES; | |
131 | ||
132 | if (simple_strtol(buf, NULL, 0) != 1) | |
133 | return -EINVAL; | |
134 | ||
135 | gfs2_quota_sync(sdp); | |
136 | return len; | |
137 | } | |
138 | ||
139 | static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf, | |
140 | size_t len) | |
141 | { | |
cd915493 | 142 | u32 id; |
b3b94faa DT |
143 | |
144 | if (!capable(CAP_SYS_ADMIN)) | |
145 | return -EACCES; | |
146 | ||
147 | id = simple_strtoul(buf, NULL, 0); | |
148 | ||
149 | gfs2_quota_refresh(sdp, 1, id); | |
150 | return len; | |
151 | } | |
152 | ||
153 | static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, | |
154 | size_t len) | |
155 | { | |
cd915493 | 156 | u32 id; |
b3b94faa DT |
157 | |
158 | if (!capable(CAP_SYS_ADMIN)) | |
159 | return -EACCES; | |
160 | ||
161 | id = simple_strtoul(buf, NULL, 0); | |
162 | ||
163 | gfs2_quota_refresh(sdp, 0, id); | |
164 | return len; | |
165 | } | |
166 | ||
167 | struct gfs2_attr { | |
168 | struct attribute attr; | |
169 | ssize_t (*show)(struct gfs2_sbd *, char *); | |
170 | ssize_t (*store)(struct gfs2_sbd *, const char *, size_t); | |
171 | }; | |
172 | ||
173 | #define GFS2_ATTR(name, mode, show, store) \ | |
174 | static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store) | |
175 | ||
176 | GFS2_ATTR(id, 0444, id_show, NULL); | |
177 | GFS2_ATTR(fsname, 0444, fsname_show, NULL); | |
178 | GFS2_ATTR(freeze, 0644, freeze_show, freeze_store); | |
179 | GFS2_ATTR(shrink, 0200, NULL, shrink_store); | |
180 | GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store); | |
181 | GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store); | |
182 | GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store); | |
183 | GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store); | |
184 | GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store); | |
185 | ||
186 | static struct attribute *gfs2_attrs[] = { | |
187 | &gfs2_attr_id.attr, | |
188 | &gfs2_attr_fsname.attr, | |
189 | &gfs2_attr_freeze.attr, | |
190 | &gfs2_attr_shrink.attr, | |
191 | &gfs2_attr_withdraw.attr, | |
192 | &gfs2_attr_statfs_sync.attr, | |
193 | &gfs2_attr_quota_sync.attr, | |
194 | &gfs2_attr_quota_refresh_user.attr, | |
195 | &gfs2_attr_quota_refresh_group.attr, | |
196 | NULL, | |
197 | }; | |
198 | ||
199 | static ssize_t gfs2_attr_show(struct kobject *kobj, struct attribute *attr, | |
200 | char *buf) | |
201 | { | |
202 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); | |
203 | struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); | |
204 | return a->show ? a->show(sdp, buf) : 0; | |
205 | } | |
206 | ||
207 | static ssize_t gfs2_attr_store(struct kobject *kobj, struct attribute *attr, | |
208 | const char *buf, size_t len) | |
209 | { | |
210 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); | |
211 | struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); | |
212 | return a->store ? a->store(sdp, buf, len) : len; | |
213 | } | |
214 | ||
215 | static struct sysfs_ops gfs2_attr_ops = { | |
216 | .show = gfs2_attr_show, | |
217 | .store = gfs2_attr_store, | |
218 | }; | |
219 | ||
220 | static struct kobj_type gfs2_ktype = { | |
221 | .default_attrs = gfs2_attrs, | |
222 | .sysfs_ops = &gfs2_attr_ops, | |
223 | }; | |
224 | ||
9bec101a | 225 | static struct kset *gfs2_kset; |
b3b94faa DT |
226 | |
227 | /* | |
228 | * display struct lm_lockstruct fields | |
229 | */ | |
230 | ||
231 | struct lockstruct_attr { | |
232 | struct attribute attr; | |
233 | ssize_t (*show)(struct gfs2_sbd *, char *); | |
234 | }; | |
235 | ||
236 | #define LOCKSTRUCT_ATTR(name, fmt) \ | |
237 | static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ | |
238 | { \ | |
3204a6c0 | 239 | return snprintf(buf, PAGE_SIZE, fmt, sdp->sd_lockstruct.ls_##name); \ |
b3b94faa DT |
240 | } \ |
241 | static struct lockstruct_attr lockstruct_attr_##name = __ATTR_RO(name) | |
242 | ||
243 | LOCKSTRUCT_ATTR(jid, "%u\n"); | |
244 | LOCKSTRUCT_ATTR(first, "%u\n"); | |
245 | LOCKSTRUCT_ATTR(lvb_size, "%u\n"); | |
246 | LOCKSTRUCT_ATTR(flags, "%d\n"); | |
247 | ||
248 | static struct attribute *lockstruct_attrs[] = { | |
249 | &lockstruct_attr_jid.attr, | |
250 | &lockstruct_attr_first.attr, | |
251 | &lockstruct_attr_lvb_size.attr, | |
252 | &lockstruct_attr_flags.attr, | |
ea67eedb | 253 | NULL, |
b3b94faa DT |
254 | }; |
255 | ||
256 | /* | |
257 | * display struct gfs2_args fields | |
258 | */ | |
259 | ||
260 | struct args_attr { | |
261 | struct attribute attr; | |
262 | ssize_t (*show)(struct gfs2_sbd *, char *); | |
263 | }; | |
264 | ||
265 | #define ARGS_ATTR(name, fmt) \ | |
266 | static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ | |
267 | { \ | |
3204a6c0 | 268 | return snprintf(buf, PAGE_SIZE, fmt, sdp->sd_args.ar_##name); \ |
b3b94faa DT |
269 | } \ |
270 | static struct args_attr args_attr_##name = __ATTR_RO(name) | |
271 | ||
272 | ARGS_ATTR(lockproto, "%s\n"); | |
273 | ARGS_ATTR(locktable, "%s\n"); | |
274 | ARGS_ATTR(hostdata, "%s\n"); | |
275 | ARGS_ATTR(spectator, "%d\n"); | |
276 | ARGS_ATTR(ignore_local_fs, "%d\n"); | |
277 | ARGS_ATTR(localcaching, "%d\n"); | |
278 | ARGS_ATTR(localflocks, "%d\n"); | |
279 | ARGS_ATTR(debug, "%d\n"); | |
280 | ARGS_ATTR(upgrade, "%d\n"); | |
281 | ARGS_ATTR(num_glockd, "%u\n"); | |
282 | ARGS_ATTR(posix_acl, "%d\n"); | |
283 | ARGS_ATTR(quota, "%u\n"); | |
284 | ARGS_ATTR(suiddir, "%d\n"); | |
285 | ARGS_ATTR(data, "%d\n"); | |
286 | ||
287 | /* one oddball doesn't fit the macro mold */ | |
288 | static ssize_t noatime_show(struct gfs2_sbd *sdp, char *buf) | |
289 | { | |
3204a6c0 DT |
290 | return snprintf(buf, PAGE_SIZE, "%d\n", |
291 | !!test_bit(SDF_NOATIME, &sdp->sd_flags)); | |
b3b94faa DT |
292 | } |
293 | static struct args_attr args_attr_noatime = __ATTR_RO(noatime); | |
294 | ||
295 | static struct attribute *args_attrs[] = { | |
296 | &args_attr_lockproto.attr, | |
297 | &args_attr_locktable.attr, | |
298 | &args_attr_hostdata.attr, | |
299 | &args_attr_spectator.attr, | |
300 | &args_attr_ignore_local_fs.attr, | |
301 | &args_attr_localcaching.attr, | |
302 | &args_attr_localflocks.attr, | |
303 | &args_attr_debug.attr, | |
304 | &args_attr_upgrade.attr, | |
305 | &args_attr_num_glockd.attr, | |
306 | &args_attr_posix_acl.attr, | |
307 | &args_attr_quota.attr, | |
308 | &args_attr_suiddir.attr, | |
309 | &args_attr_data.attr, | |
310 | &args_attr_noatime.attr, | |
ea67eedb | 311 | NULL, |
b3b94faa DT |
312 | }; |
313 | ||
314 | /* | |
315 | * display counters from superblock | |
316 | */ | |
317 | ||
318 | struct counters_attr { | |
319 | struct attribute attr; | |
320 | ssize_t (*show)(struct gfs2_sbd *, char *); | |
321 | }; | |
322 | ||
6a6b3d01 | 323 | #define COUNTERS_ATTR(name, fmt) \ |
b3b94faa DT |
324 | static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ |
325 | { \ | |
3204a6c0 DT |
326 | return snprintf(buf, PAGE_SIZE, fmt, \ |
327 | (unsigned int)atomic_read(&sdp->sd_##name)); \ | |
b3b94faa DT |
328 | } \ |
329 | static struct counters_attr counters_attr_##name = __ATTR_RO(name) | |
330 | ||
6a6b3d01 DT |
331 | COUNTERS_ATTR(glock_count, "%u\n"); |
332 | COUNTERS_ATTR(glock_held_count, "%u\n"); | |
333 | COUNTERS_ATTR(inode_count, "%u\n"); | |
334 | COUNTERS_ATTR(reclaimed, "%u\n"); | |
b3b94faa DT |
335 | |
336 | static struct attribute *counters_attrs[] = { | |
337 | &counters_attr_glock_count.attr, | |
338 | &counters_attr_glock_held_count.attr, | |
339 | &counters_attr_inode_count.attr, | |
b3b94faa | 340 | &counters_attr_reclaimed.attr, |
ea67eedb | 341 | NULL, |
b3b94faa DT |
342 | }; |
343 | ||
344 | /* | |
345 | * get and set struct gfs2_tune fields | |
346 | */ | |
347 | ||
348 | static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) | |
349 | { | |
3204a6c0 DT |
350 | return snprintf(buf, PAGE_SIZE, "%u %u\n", |
351 | sdp->sd_tune.gt_quota_scale_num, | |
352 | sdp->sd_tune.gt_quota_scale_den); | |
b3b94faa DT |
353 | } |
354 | ||
355 | static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, | |
356 | size_t len) | |
357 | { | |
358 | struct gfs2_tune *gt = &sdp->sd_tune; | |
359 | unsigned int x, y; | |
360 | ||
361 | if (!capable(CAP_SYS_ADMIN)) | |
362 | return -EACCES; | |
363 | ||
364 | if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) | |
365 | return -EINVAL; | |
366 | ||
367 | spin_lock(>->gt_spin); | |
368 | gt->gt_quota_scale_num = x; | |
369 | gt->gt_quota_scale_den = y; | |
370 | spin_unlock(>->gt_spin); | |
371 | return len; | |
372 | } | |
373 | ||
374 | static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, | |
375 | int check_zero, const char *buf, size_t len) | |
376 | { | |
377 | struct gfs2_tune *gt = &sdp->sd_tune; | |
378 | unsigned int x; | |
379 | ||
380 | if (!capable(CAP_SYS_ADMIN)) | |
381 | return -EACCES; | |
382 | ||
383 | x = simple_strtoul(buf, NULL, 0); | |
384 | ||
385 | if (check_zero && !x) | |
386 | return -EINVAL; | |
387 | ||
388 | spin_lock(>->gt_spin); | |
389 | *field = x; | |
390 | spin_unlock(>->gt_spin); | |
391 | return len; | |
392 | } | |
393 | ||
394 | struct tune_attr { | |
395 | struct attribute attr; | |
396 | ssize_t (*show)(struct gfs2_sbd *, char *); | |
397 | ssize_t (*store)(struct gfs2_sbd *, const char *, size_t); | |
398 | }; | |
399 | ||
400 | #define TUNE_ATTR_3(name, show, store) \ | |
401 | static struct tune_attr tune_attr_##name = __ATTR(name, 0644, show, store) | |
402 | ||
403 | #define TUNE_ATTR_2(name, store) \ | |
404 | static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ | |
405 | { \ | |
3204a6c0 | 406 | return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \ |
b3b94faa DT |
407 | } \ |
408 | TUNE_ATTR_3(name, name##_show, store) | |
409 | ||
410 | #define TUNE_ATTR(name, check_zero) \ | |
411 | static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ | |
412 | { \ | |
413 | return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ | |
414 | } \ | |
415 | TUNE_ATTR_2(name, name##_store) | |
416 | ||
417 | #define TUNE_ATTR_DAEMON(name, process) \ | |
418 | static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ | |
419 | { \ | |
420 | ssize_t r = tune_set(sdp, &sdp->sd_tune.gt_##name, 1, buf, len); \ | |
421 | wake_up_process(sdp->sd_##process); \ | |
422 | return r; \ | |
423 | } \ | |
424 | TUNE_ATTR_2(name, name##_store) | |
425 | ||
b3b94faa DT |
426 | TUNE_ATTR(demote_secs, 0); |
427 | TUNE_ATTR(incore_log_blocks, 0); | |
428 | TUNE_ATTR(log_flush_secs, 0); | |
b3b94faa DT |
429 | TUNE_ATTR(quota_warn_period, 0); |
430 | TUNE_ATTR(quota_quantum, 0); | |
431 | TUNE_ATTR(atime_quantum, 0); | |
432 | TUNE_ATTR(max_readahead, 0); | |
433 | TUNE_ATTR(complain_secs, 0); | |
b3b94faa DT |
434 | TUNE_ATTR(statfs_slow, 0); |
435 | TUNE_ATTR(new_files_jdata, 0); | |
436 | TUNE_ATTR(new_files_directio, 0); | |
437 | TUNE_ATTR(quota_simul_sync, 1); | |
438 | TUNE_ATTR(quota_cache_secs, 1); | |
b3b94faa | 439 | TUNE_ATTR(stall_secs, 1); |
b3b94faa | 440 | TUNE_ATTR(statfs_quantum, 1); |
b3b94faa DT |
441 | TUNE_ATTR_DAEMON(recoverd_secs, recoverd_process); |
442 | TUNE_ATTR_DAEMON(logd_secs, logd_process); | |
443 | TUNE_ATTR_DAEMON(quotad_secs, quotad_process); | |
b3b94faa DT |
444 | TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); |
445 | ||
446 | static struct attribute *tune_attrs[] = { | |
b3b94faa DT |
447 | &tune_attr_demote_secs.attr, |
448 | &tune_attr_incore_log_blocks.attr, | |
449 | &tune_attr_log_flush_secs.attr, | |
b3b94faa DT |
450 | &tune_attr_quota_warn_period.attr, |
451 | &tune_attr_quota_quantum.attr, | |
452 | &tune_attr_atime_quantum.attr, | |
453 | &tune_attr_max_readahead.attr, | |
454 | &tune_attr_complain_secs.attr, | |
b3b94faa DT |
455 | &tune_attr_statfs_slow.attr, |
456 | &tune_attr_quota_simul_sync.attr, | |
457 | &tune_attr_quota_cache_secs.attr, | |
b3b94faa | 458 | &tune_attr_stall_secs.attr, |
b3b94faa | 459 | &tune_attr_statfs_quantum.attr, |
b3b94faa DT |
460 | &tune_attr_recoverd_secs.attr, |
461 | &tune_attr_logd_secs.attr, | |
462 | &tune_attr_quotad_secs.attr, | |
b3b94faa DT |
463 | &tune_attr_quota_scale.attr, |
464 | &tune_attr_new_files_jdata.attr, | |
465 | &tune_attr_new_files_directio.attr, | |
ea67eedb | 466 | NULL, |
b3b94faa DT |
467 | }; |
468 | ||
469 | static struct attribute_group lockstruct_group = { | |
470 | .name = "lockstruct", | |
ea67eedb | 471 | .attrs = lockstruct_attrs, |
b3b94faa DT |
472 | }; |
473 | ||
474 | static struct attribute_group counters_group = { | |
475 | .name = "counters", | |
ea67eedb | 476 | .attrs = counters_attrs, |
b3b94faa DT |
477 | }; |
478 | ||
479 | static struct attribute_group args_group = { | |
480 | .name = "args", | |
ea67eedb | 481 | .attrs = args_attrs, |
b3b94faa DT |
482 | }; |
483 | ||
484 | static struct attribute_group tune_group = { | |
485 | .name = "tune", | |
ea67eedb | 486 | .attrs = tune_attrs, |
b3b94faa DT |
487 | }; |
488 | ||
489 | int gfs2_sys_fs_add(struct gfs2_sbd *sdp) | |
490 | { | |
491 | int error; | |
492 | ||
9bec101a | 493 | sdp->sd_kobj.kset = gfs2_kset; |
901195ed GKH |
494 | error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL, |
495 | "%s", sdp->sd_table_name); | |
b3b94faa DT |
496 | if (error) |
497 | goto fail; | |
498 | ||
499 | error = sysfs_create_group(&sdp->sd_kobj, &lockstruct_group); | |
500 | if (error) | |
501 | goto fail_reg; | |
502 | ||
503 | error = sysfs_create_group(&sdp->sd_kobj, &counters_group); | |
504 | if (error) | |
505 | goto fail_lockstruct; | |
506 | ||
507 | error = sysfs_create_group(&sdp->sd_kobj, &args_group); | |
508 | if (error) | |
509 | goto fail_counters; | |
510 | ||
511 | error = sysfs_create_group(&sdp->sd_kobj, &tune_group); | |
512 | if (error) | |
513 | goto fail_args; | |
514 | ||
901195ed | 515 | kobject_uevent(&sdp->sd_kobj, KOBJ_ADD); |
b3b94faa DT |
516 | return 0; |
517 | ||
a91ea69f | 518 | fail_args: |
b3b94faa | 519 | sysfs_remove_group(&sdp->sd_kobj, &args_group); |
a91ea69f | 520 | fail_counters: |
b3b94faa | 521 | sysfs_remove_group(&sdp->sd_kobj, &counters_group); |
a91ea69f | 522 | fail_lockstruct: |
b3b94faa | 523 | sysfs_remove_group(&sdp->sd_kobj, &lockstruct_group); |
a91ea69f | 524 | fail_reg: |
197b12d6 | 525 | kobject_put(&sdp->sd_kobj); |
a91ea69f | 526 | fail: |
65952fb4 | 527 | fs_err(sdp, "error %d adding sysfs files", error); |
b3b94faa DT |
528 | return error; |
529 | } | |
530 | ||
531 | void gfs2_sys_fs_del(struct gfs2_sbd *sdp) | |
532 | { | |
533 | sysfs_remove_group(&sdp->sd_kobj, &tune_group); | |
534 | sysfs_remove_group(&sdp->sd_kobj, &args_group); | |
535 | sysfs_remove_group(&sdp->sd_kobj, &counters_group); | |
536 | sysfs_remove_group(&sdp->sd_kobj, &lockstruct_group); | |
197b12d6 | 537 | kobject_put(&sdp->sd_kobj); |
b3b94faa DT |
538 | } |
539 | ||
540 | int gfs2_sys_init(void) | |
541 | { | |
542 | gfs2_sys_margs = NULL; | |
543 | spin_lock_init(&gfs2_sys_margs_lock); | |
9bec101a GKH |
544 | gfs2_kset = kset_create_and_add("gfs2", NULL, fs_kobj); |
545 | if (!gfs2_kset) | |
546 | return -ENOMEM; | |
547 | return 0; | |
b3b94faa DT |
548 | } |
549 | ||
550 | void gfs2_sys_uninit(void) | |
551 | { | |
552 | kfree(gfs2_sys_margs); | |
9bec101a | 553 | kset_unregister(gfs2_kset); |
b3b94faa DT |
554 | } |
555 |