Commit | Line | Data |
---|---|---|
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> | |
b3b94faa DT |
11 | #include <linux/spinlock.h> |
12 | #include <linux/completion.h> | |
13 | #include <linux/buffer_head.h> | |
14 | #include <linux/module.h> | |
15 | #include <linux/kobject.h> | |
b3b94faa | 16 | #include <asm/uaccess.h> |
f057f6cd | 17 | #include <linux/gfs2_ondisk.h> |
31e54b01 | 18 | #include <linux/genhd.h> |
b3b94faa DT |
19 | |
20 | #include "gfs2.h" | |
5c676f6d | 21 | #include "incore.h" |
b3b94faa DT |
22 | #include "sys.h" |
23 | #include "super.h" | |
24 | #include "glock.h" | |
25 | #include "quota.h" | |
5c676f6d | 26 | #include "util.h" |
64d576ba | 27 | #include "glops.h" |
b3b94faa | 28 | |
48c2b613 SW |
29 | struct gfs2_attr { |
30 | struct attribute attr; | |
31 | ssize_t (*show)(struct gfs2_sbd *, char *); | |
32 | ssize_t (*store)(struct gfs2_sbd *, const char *, size_t); | |
33 | }; | |
34 | ||
35 | static ssize_t gfs2_attr_show(struct kobject *kobj, struct attribute *attr, | |
36 | char *buf) | |
37 | { | |
38 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); | |
39 | struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); | |
40 | return a->show ? a->show(sdp, buf) : 0; | |
41 | } | |
42 | ||
43 | static ssize_t gfs2_attr_store(struct kobject *kobj, struct attribute *attr, | |
44 | const char *buf, size_t len) | |
45 | { | |
46 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); | |
47 | struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); | |
48 | return a->store ? a->store(sdp, buf, len) : len; | |
49 | } | |
50 | ||
52cf25d0 | 51 | static const struct sysfs_ops gfs2_attr_ops = { |
48c2b613 SW |
52 | .show = gfs2_attr_show, |
53 | .store = gfs2_attr_store, | |
54 | }; | |
55 | ||
56 | ||
57 | static struct kset *gfs2_kset; | |
58 | ||
b3b94faa DT |
59 | static ssize_t id_show(struct gfs2_sbd *sdp, char *buf) |
60 | { | |
c7227e46 BP |
61 | return snprintf(buf, PAGE_SIZE, "%u:%u\n", |
62 | MAJOR(sdp->sd_vfs->s_dev), MINOR(sdp->sd_vfs->s_dev)); | |
b3b94faa DT |
63 | } |
64 | ||
65 | static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf) | |
66 | { | |
3204a6c0 | 67 | return snprintf(buf, PAGE_SIZE, "%s\n", sdp->sd_fsname); |
b3b94faa DT |
68 | } |
69 | ||
02e3cc70 SW |
70 | static int gfs2_uuid_valid(const u8 *uuid) |
71 | { | |
72 | int i; | |
73 | ||
74 | for (i = 0; i < 16; i++) { | |
75 | if (uuid[i]) | |
76 | return 1; | |
77 | } | |
78 | return 0; | |
79 | } | |
80 | ||
81 | static ssize_t uuid_show(struct gfs2_sbd *sdp, char *buf) | |
82 | { | |
83 | const u8 *uuid = sdp->sd_sb.sb_uuid; | |
84 | buf[0] = '\0'; | |
85 | if (!gfs2_uuid_valid(uuid)) | |
86 | return 0; | |
f0b34ae6 | 87 | return snprintf(buf, PAGE_SIZE, "%pUB\n", uuid); |
02e3cc70 SW |
88 | } |
89 | ||
b3b94faa DT |
90 | static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) |
91 | { | |
92 | unsigned int count; | |
93 | ||
f55ab26a | 94 | mutex_lock(&sdp->sd_freeze_lock); |
b3b94faa | 95 | count = sdp->sd_freeze_count; |
f55ab26a | 96 | mutex_unlock(&sdp->sd_freeze_lock); |
b3b94faa | 97 | |
3204a6c0 | 98 | return snprintf(buf, PAGE_SIZE, "%u\n", count); |
b3b94faa DT |
99 | } |
100 | ||
101 | static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
102 | { | |
103 | ssize_t ret = len; | |
104 | int error = 0; | |
105 | int n = simple_strtol(buf, NULL, 0); | |
106 | ||
107 | if (!capable(CAP_SYS_ADMIN)) | |
108 | return -EACCES; | |
109 | ||
110 | switch (n) { | |
111 | case 0: | |
112 | gfs2_unfreeze_fs(sdp); | |
113 | break; | |
114 | case 1: | |
115 | error = gfs2_freeze_fs(sdp); | |
116 | break; | |
117 | default: | |
118 | ret = -EINVAL; | |
119 | } | |
120 | ||
121 | if (error) | |
122 | fs_warn(sdp, "freeze %d error %d", n, error); | |
123 | ||
124 | return ret; | |
125 | } | |
126 | ||
127 | static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf) | |
128 | { | |
129 | unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags); | |
3204a6c0 | 130 | return snprintf(buf, PAGE_SIZE, "%u\n", b); |
b3b94faa DT |
131 | } |
132 | ||
133 | static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
134 | { | |
135 | if (!capable(CAP_SYS_ADMIN)) | |
136 | return -EACCES; | |
137 | ||
138 | if (simple_strtol(buf, NULL, 0) != 1) | |
139 | return -EINVAL; | |
140 | ||
141 | gfs2_lm_withdraw(sdp, | |
142 | "GFS2: fsid=%s: withdrawing from cluster at user's request\n", | |
143 | sdp->sd_fsname); | |
144 | return len; | |
145 | } | |
146 | ||
147 | static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, | |
148 | size_t len) | |
149 | { | |
150 | if (!capable(CAP_SYS_ADMIN)) | |
151 | return -EACCES; | |
152 | ||
153 | if (simple_strtol(buf, NULL, 0) != 1) | |
154 | return -EINVAL; | |
155 | ||
8c42d637 | 156 | gfs2_statfs_sync(sdp->sd_vfs, 0); |
b3b94faa DT |
157 | return len; |
158 | } | |
159 | ||
b3b94faa DT |
160 | static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, |
161 | size_t len) | |
162 | { | |
163 | if (!capable(CAP_SYS_ADMIN)) | |
164 | return -EACCES; | |
165 | ||
166 | if (simple_strtol(buf, NULL, 0) != 1) | |
167 | return -EINVAL; | |
168 | ||
5fb324ad | 169 | gfs2_quota_sync(sdp->sd_vfs, 0, 1); |
b3b94faa DT |
170 | return len; |
171 | } | |
172 | ||
173 | static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf, | |
174 | size_t len) | |
175 | { | |
ea762338 | 176 | int error; |
cd915493 | 177 | u32 id; |
b3b94faa DT |
178 | |
179 | if (!capable(CAP_SYS_ADMIN)) | |
180 | return -EACCES; | |
181 | ||
182 | id = simple_strtoul(buf, NULL, 0); | |
183 | ||
ea762338 SW |
184 | error = gfs2_quota_refresh(sdp, 1, id); |
185 | return error ? error : len; | |
b3b94faa DT |
186 | } |
187 | ||
188 | static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, | |
189 | size_t len) | |
190 | { | |
ea762338 | 191 | int error; |
cd915493 | 192 | u32 id; |
b3b94faa DT |
193 | |
194 | if (!capable(CAP_SYS_ADMIN)) | |
195 | return -EACCES; | |
196 | ||
197 | id = simple_strtoul(buf, NULL, 0); | |
198 | ||
ea762338 SW |
199 | error = gfs2_quota_refresh(sdp, 0, id); |
200 | return error ? error : len; | |
b3b94faa DT |
201 | } |
202 | ||
64d576ba SW |
203 | static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
204 | { | |
205 | struct gfs2_glock *gl; | |
206 | const struct gfs2_glock_operations *glops; | |
207 | unsigned int glmode; | |
208 | unsigned int gltype; | |
209 | unsigned long long glnum; | |
210 | char mode[16]; | |
211 | int rv; | |
212 | ||
213 | if (!capable(CAP_SYS_ADMIN)) | |
214 | return -EACCES; | |
215 | ||
216 | rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum, | |
217 | mode); | |
218 | if (rv != 3) | |
219 | return -EINVAL; | |
220 | ||
221 | if (strcmp(mode, "EX") == 0) | |
222 | glmode = LM_ST_UNLOCKED; | |
223 | else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0)) | |
224 | glmode = LM_ST_DEFERRED; | |
225 | else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0)) | |
226 | glmode = LM_ST_SHARED; | |
227 | else | |
228 | return -EINVAL; | |
229 | ||
230 | if (gltype > LM_TYPE_JOURNAL) | |
231 | return -EINVAL; | |
232 | glops = gfs2_glops_list[gltype]; | |
233 | if (glops == NULL) | |
234 | return -EINVAL; | |
6a99be5d | 235 | if (!test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags)) |
913a71d2 | 236 | fs_info(sdp, "demote interface used\n"); |
64d576ba SW |
237 | rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl); |
238 | if (rv) | |
239 | return rv; | |
240 | gfs2_glock_cb(gl, glmode); | |
241 | gfs2_glock_put(gl); | |
242 | return len; | |
243 | } | |
244 | ||
b3b94faa DT |
245 | |
246 | #define GFS2_ATTR(name, mode, show, store) \ | |
247 | static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store) | |
248 | ||
249 | GFS2_ATTR(id, 0444, id_show, NULL); | |
250 | GFS2_ATTR(fsname, 0444, fsname_show, NULL); | |
02e3cc70 | 251 | GFS2_ATTR(uuid, 0444, uuid_show, NULL); |
b3b94faa | 252 | GFS2_ATTR(freeze, 0644, freeze_show, freeze_store); |
b3b94faa DT |
253 | GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store); |
254 | GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store); | |
255 | GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store); | |
256 | GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store); | |
257 | GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store); | |
64d576ba | 258 | GFS2_ATTR(demote_rq, 0200, NULL, demote_rq_store); |
b3b94faa DT |
259 | |
260 | static struct attribute *gfs2_attrs[] = { | |
261 | &gfs2_attr_id.attr, | |
262 | &gfs2_attr_fsname.attr, | |
02e3cc70 | 263 | &gfs2_attr_uuid.attr, |
b3b94faa | 264 | &gfs2_attr_freeze.attr, |
b3b94faa DT |
265 | &gfs2_attr_withdraw.attr, |
266 | &gfs2_attr_statfs_sync.attr, | |
267 | &gfs2_attr_quota_sync.attr, | |
268 | &gfs2_attr_quota_refresh_user.attr, | |
269 | &gfs2_attr_quota_refresh_group.attr, | |
64d576ba | 270 | &gfs2_attr_demote_rq.attr, |
b3b94faa DT |
271 | NULL, |
272 | }; | |
273 | ||
b3b94faa DT |
274 | static struct kobj_type gfs2_ktype = { |
275 | .default_attrs = gfs2_attrs, | |
276 | .sysfs_ops = &gfs2_attr_ops, | |
277 | }; | |
278 | ||
f057f6cd SW |
279 | |
280 | /* | |
281 | * lock_module. Originally from lock_dlm | |
282 | */ | |
283 | ||
284 | static ssize_t proto_name_show(struct gfs2_sbd *sdp, char *buf) | |
285 | { | |
286 | const struct lm_lockops *ops = sdp->sd_lockstruct.ls_ops; | |
287 | return sprintf(buf, "%s\n", ops->lm_proto_name); | |
288 | } | |
289 | ||
290 | static ssize_t block_show(struct gfs2_sbd *sdp, char *buf) | |
291 | { | |
292 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
293 | ssize_t ret; | |
294 | int val = 0; | |
295 | ||
296 | if (test_bit(DFL_BLOCK_LOCKS, &ls->ls_flags)) | |
297 | val = 1; | |
298 | ret = sprintf(buf, "%d\n", val); | |
299 | return ret; | |
300 | } | |
301 | ||
302 | static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
303 | { | |
304 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
305 | ssize_t ret = len; | |
306 | int val; | |
307 | ||
308 | val = simple_strtol(buf, NULL, 0); | |
309 | ||
310 | if (val == 1) | |
311 | set_bit(DFL_BLOCK_LOCKS, &ls->ls_flags); | |
312 | else if (val == 0) { | |
313 | clear_bit(DFL_BLOCK_LOCKS, &ls->ls_flags); | |
314 | smp_mb__after_clear_bit(); | |
315 | gfs2_glock_thaw(sdp); | |
316 | } else { | |
317 | ret = -EINVAL; | |
318 | } | |
319 | return ret; | |
320 | } | |
321 | ||
f057f6cd SW |
322 | static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf) |
323 | { | |
324 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
325 | return sprintf(buf, "%d\n", ls->ls_first); | |
326 | } | |
327 | ||
328 | static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf) | |
329 | { | |
330 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
331 | return sprintf(buf, "%d\n", ls->ls_first_done); | |
332 | } | |
333 | ||
fe64d517 | 334 | static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
f057f6cd | 335 | { |
fe64d517 | 336 | unsigned jid; |
f057f6cd | 337 | struct gfs2_jdesc *jd; |
fe64d517 SW |
338 | int rv; |
339 | ||
340 | rv = sscanf(buf, "%u", &jid); | |
341 | if (rv != 1) | |
342 | return -EINVAL; | |
f057f6cd | 343 | |
fe64d517 | 344 | rv = -ESHUTDOWN; |
f057f6cd | 345 | spin_lock(&sdp->sd_jindex_spin); |
fe64d517 SW |
346 | if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) |
347 | goto out; | |
348 | rv = -EBUSY; | |
349 | if (sdp->sd_jdesc->jd_jid == jid) | |
350 | goto out; | |
351 | rv = -ENOENT; | |
f057f6cd SW |
352 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { |
353 | if (jd->jd_jid != jid) | |
354 | continue; | |
fe64d517 | 355 | rv = slow_work_enqueue(&jd->jd_work); |
f057f6cd SW |
356 | break; |
357 | } | |
fe64d517 | 358 | out: |
f057f6cd | 359 | spin_unlock(&sdp->sd_jindex_spin); |
fe64d517 | 360 | return rv ? rv : len; |
f057f6cd SW |
361 | } |
362 | ||
363 | static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf) | |
364 | { | |
365 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
366 | return sprintf(buf, "%d\n", ls->ls_recover_jid_done); | |
367 | } | |
368 | ||
369 | static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf) | |
370 | { | |
371 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
372 | return sprintf(buf, "%d\n", ls->ls_recover_jid_status); | |
373 | } | |
374 | ||
e1b28aab SW |
375 | static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf) |
376 | { | |
377 | return sprintf(buf, "%u\n", sdp->sd_lockstruct.ls_jid); | |
378 | } | |
379 | ||
f057f6cd | 380 | #define GDLM_ATTR(_name,_mode,_show,_store) \ |
48c2b613 | 381 | static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store) |
f057f6cd | 382 | |
d7e623da SW |
383 | GDLM_ATTR(proto_name, 0444, proto_name_show, NULL); |
384 | GDLM_ATTR(block, 0644, block_show, block_store); | |
385 | GDLM_ATTR(withdraw, 0644, withdraw_show, withdraw_store); | |
d7e623da SW |
386 | GDLM_ATTR(jid, 0444, jid_show, NULL); |
387 | GDLM_ATTR(first, 0444, lkfirst_show, NULL); | |
388 | GDLM_ATTR(first_done, 0444, first_done_show, NULL); | |
389 | GDLM_ATTR(recover, 0600, NULL, recover_store); | |
390 | GDLM_ATTR(recover_done, 0444, recover_done_show, NULL); | |
391 | GDLM_ATTR(recover_status, 0444, recover_status_show, NULL); | |
f057f6cd SW |
392 | |
393 | static struct attribute *lock_module_attrs[] = { | |
394 | &gdlm_attr_proto_name.attr, | |
395 | &gdlm_attr_block.attr, | |
396 | &gdlm_attr_withdraw.attr, | |
e1b28aab | 397 | &gdlm_attr_jid.attr, |
f057f6cd SW |
398 | &gdlm_attr_first.attr, |
399 | &gdlm_attr_first_done.attr, | |
400 | &gdlm_attr_recover.attr, | |
401 | &gdlm_attr_recover_done.attr, | |
402 | &gdlm_attr_recover_status.attr, | |
ea67eedb | 403 | NULL, |
b3b94faa DT |
404 | }; |
405 | ||
b3b94faa DT |
406 | /* |
407 | * get and set struct gfs2_tune fields | |
408 | */ | |
409 | ||
410 | static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) | |
411 | { | |
3204a6c0 DT |
412 | return snprintf(buf, PAGE_SIZE, "%u %u\n", |
413 | sdp->sd_tune.gt_quota_scale_num, | |
414 | sdp->sd_tune.gt_quota_scale_den); | |
b3b94faa DT |
415 | } |
416 | ||
417 | static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, | |
418 | size_t len) | |
419 | { | |
420 | struct gfs2_tune *gt = &sdp->sd_tune; | |
421 | unsigned int x, y; | |
422 | ||
423 | if (!capable(CAP_SYS_ADMIN)) | |
424 | return -EACCES; | |
425 | ||
426 | if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) | |
427 | return -EINVAL; | |
428 | ||
429 | spin_lock(>->gt_spin); | |
430 | gt->gt_quota_scale_num = x; | |
431 | gt->gt_quota_scale_den = y; | |
432 | spin_unlock(>->gt_spin); | |
433 | return len; | |
434 | } | |
435 | ||
436 | static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, | |
437 | int check_zero, const char *buf, size_t len) | |
438 | { | |
439 | struct gfs2_tune *gt = &sdp->sd_tune; | |
440 | unsigned int x; | |
441 | ||
442 | if (!capable(CAP_SYS_ADMIN)) | |
443 | return -EACCES; | |
444 | ||
445 | x = simple_strtoul(buf, NULL, 0); | |
446 | ||
447 | if (check_zero && !x) | |
448 | return -EINVAL; | |
449 | ||
450 | spin_lock(>->gt_spin); | |
451 | *field = x; | |
452 | spin_unlock(>->gt_spin); | |
453 | return len; | |
454 | } | |
455 | ||
b3b94faa | 456 | #define TUNE_ATTR_3(name, show, store) \ |
48c2b613 | 457 | static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store) |
b3b94faa DT |
458 | |
459 | #define TUNE_ATTR_2(name, store) \ | |
460 | static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ | |
461 | { \ | |
3204a6c0 | 462 | return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \ |
b3b94faa DT |
463 | } \ |
464 | TUNE_ATTR_3(name, name##_show, store) | |
465 | ||
466 | #define TUNE_ATTR(name, check_zero) \ | |
467 | static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ | |
468 | { \ | |
469 | return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ | |
470 | } \ | |
471 | TUNE_ATTR_2(name, name##_store) | |
472 | ||
b3b94faa DT |
473 | TUNE_ATTR(quota_warn_period, 0); |
474 | TUNE_ATTR(quota_quantum, 0); | |
b3b94faa DT |
475 | TUNE_ATTR(max_readahead, 0); |
476 | TUNE_ATTR(complain_secs, 0); | |
b3b94faa DT |
477 | TUNE_ATTR(statfs_slow, 0); |
478 | TUNE_ATTR(new_files_jdata, 0); | |
b3b94faa | 479 | TUNE_ATTR(quota_simul_sync, 1); |
b3b94faa | 480 | TUNE_ATTR(statfs_quantum, 1); |
b3b94faa DT |
481 | TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); |
482 | ||
483 | static struct attribute *tune_attrs[] = { | |
b3b94faa DT |
484 | &tune_attr_quota_warn_period.attr, |
485 | &tune_attr_quota_quantum.attr, | |
b3b94faa DT |
486 | &tune_attr_max_readahead.attr, |
487 | &tune_attr_complain_secs.attr, | |
b3b94faa DT |
488 | &tune_attr_statfs_slow.attr, |
489 | &tune_attr_quota_simul_sync.attr, | |
b3b94faa | 490 | &tune_attr_statfs_quantum.attr, |
b3b94faa DT |
491 | &tune_attr_quota_scale.attr, |
492 | &tune_attr_new_files_jdata.attr, | |
ea67eedb | 493 | NULL, |
b3b94faa DT |
494 | }; |
495 | ||
b3b94faa DT |
496 | static struct attribute_group tune_group = { |
497 | .name = "tune", | |
ea67eedb | 498 | .attrs = tune_attrs, |
b3b94faa DT |
499 | }; |
500 | ||
f057f6cd SW |
501 | static struct attribute_group lock_module_group = { |
502 | .name = "lock_module", | |
503 | .attrs = lock_module_attrs, | |
504 | }; | |
505 | ||
b3b94faa DT |
506 | int gfs2_sys_fs_add(struct gfs2_sbd *sdp) |
507 | { | |
440d6da2 | 508 | struct super_block *sb = sdp->sd_vfs; |
b3b94faa | 509 | int error; |
440d6da2 SW |
510 | char ro[20]; |
511 | char spectator[20]; | |
512 | char *envp[] = { ro, spectator, NULL }; | |
513 | ||
514 | sprintf(ro, "RDONLY=%d", (sb->s_flags & MS_RDONLY) ? 1 : 0); | |
515 | sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); | |
b3b94faa | 516 | |
9bec101a | 517 | sdp->sd_kobj.kset = gfs2_kset; |
901195ed GKH |
518 | error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL, |
519 | "%s", sdp->sd_table_name); | |
b3b94faa DT |
520 | if (error) |
521 | goto fail; | |
522 | ||
b3b94faa DT |
523 | error = sysfs_create_group(&sdp->sd_kobj, &tune_group); |
524 | if (error) | |
f6eb5349 | 525 | goto fail_reg; |
b3b94faa | 526 | |
f057f6cd SW |
527 | error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group); |
528 | if (error) | |
529 | goto fail_tune; | |
530 | ||
31e54b01 SW |
531 | error = sysfs_create_link(&sdp->sd_kobj, |
532 | &disk_to_dev(sb->s_bdev->bd_disk)->kobj, | |
533 | "device"); | |
534 | if (error) | |
535 | goto fail_lock_module; | |
536 | ||
440d6da2 | 537 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_ADD, envp); |
b3b94faa DT |
538 | return 0; |
539 | ||
31e54b01 SW |
540 | fail_lock_module: |
541 | sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); | |
f057f6cd SW |
542 | fail_tune: |
543 | sysfs_remove_group(&sdp->sd_kobj, &tune_group); | |
a91ea69f | 544 | fail_reg: |
197b12d6 | 545 | kobject_put(&sdp->sd_kobj); |
a91ea69f | 546 | fail: |
65952fb4 | 547 | fs_err(sdp, "error %d adding sysfs files", error); |
b3b94faa DT |
548 | return error; |
549 | } | |
550 | ||
551 | void gfs2_sys_fs_del(struct gfs2_sbd *sdp) | |
552 | { | |
31e54b01 | 553 | sysfs_remove_link(&sdp->sd_kobj, "device"); |
b3b94faa | 554 | sysfs_remove_group(&sdp->sd_kobj, &tune_group); |
f057f6cd | 555 | sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); |
197b12d6 | 556 | kobject_put(&sdp->sd_kobj); |
b3b94faa DT |
557 | } |
558 | ||
fdd1062e SW |
559 | static int gfs2_uevent(struct kset *kset, struct kobject *kobj, |
560 | struct kobj_uevent_env *env) | |
561 | { | |
562 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); | |
02e3cc70 SW |
563 | const u8 *uuid = sdp->sd_sb.sb_uuid; |
564 | ||
fdd1062e SW |
565 | add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name); |
566 | add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name); | |
440d6da2 SW |
567 | if (!sdp->sd_args.ar_spectator) |
568 | add_uevent_var(env, "JOURNALID=%u", sdp->sd_lockstruct.ls_jid); | |
f0b34ae6 JP |
569 | if (gfs2_uuid_valid(uuid)) |
570 | add_uevent_var(env, "UUID=%pUB", uuid); | |
fdd1062e SW |
571 | return 0; |
572 | } | |
573 | ||
9cd43611 | 574 | static const struct kset_uevent_ops gfs2_uevent_ops = { |
fdd1062e SW |
575 | .uevent = gfs2_uevent, |
576 | }; | |
577 | ||
b3b94faa DT |
578 | int gfs2_sys_init(void) |
579 | { | |
fdd1062e | 580 | gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj); |
9bec101a GKH |
581 | if (!gfs2_kset) |
582 | return -ENOMEM; | |
583 | return 0; | |
b3b94faa DT |
584 | } |
585 | ||
586 | void gfs2_sys_uninit(void) | |
587 | { | |
9bec101a | 588 | kset_unregister(gfs2_kset); |
b3b94faa DT |
589 | } |
590 |