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