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; | |
235 | rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl); | |
236 | if (rv) | |
237 | return rv; | |
238 | gfs2_glock_cb(gl, glmode); | |
239 | gfs2_glock_put(gl); | |
240 | return len; | |
241 | } | |
242 | ||
b3b94faa DT |
243 | |
244 | #define GFS2_ATTR(name, mode, show, store) \ | |
245 | static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store) | |
246 | ||
247 | GFS2_ATTR(id, 0444, id_show, NULL); | |
248 | GFS2_ATTR(fsname, 0444, fsname_show, NULL); | |
02e3cc70 | 249 | GFS2_ATTR(uuid, 0444, uuid_show, NULL); |
b3b94faa | 250 | GFS2_ATTR(freeze, 0644, freeze_show, freeze_store); |
b3b94faa DT |
251 | GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store); |
252 | GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store); | |
253 | GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store); | |
254 | GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store); | |
255 | GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store); | |
64d576ba | 256 | GFS2_ATTR(demote_rq, 0200, NULL, demote_rq_store); |
b3b94faa DT |
257 | |
258 | static struct attribute *gfs2_attrs[] = { | |
259 | &gfs2_attr_id.attr, | |
260 | &gfs2_attr_fsname.attr, | |
02e3cc70 | 261 | &gfs2_attr_uuid.attr, |
b3b94faa | 262 | &gfs2_attr_freeze.attr, |
b3b94faa DT |
263 | &gfs2_attr_withdraw.attr, |
264 | &gfs2_attr_statfs_sync.attr, | |
265 | &gfs2_attr_quota_sync.attr, | |
266 | &gfs2_attr_quota_refresh_user.attr, | |
267 | &gfs2_attr_quota_refresh_group.attr, | |
64d576ba | 268 | &gfs2_attr_demote_rq.attr, |
b3b94faa DT |
269 | NULL, |
270 | }; | |
271 | ||
b3b94faa DT |
272 | static struct kobj_type gfs2_ktype = { |
273 | .default_attrs = gfs2_attrs, | |
274 | .sysfs_ops = &gfs2_attr_ops, | |
275 | }; | |
276 | ||
f057f6cd SW |
277 | |
278 | /* | |
279 | * lock_module. Originally from lock_dlm | |
280 | */ | |
281 | ||
282 | static ssize_t proto_name_show(struct gfs2_sbd *sdp, char *buf) | |
283 | { | |
284 | const struct lm_lockops *ops = sdp->sd_lockstruct.ls_ops; | |
285 | return sprintf(buf, "%s\n", ops->lm_proto_name); | |
286 | } | |
287 | ||
288 | static ssize_t block_show(struct gfs2_sbd *sdp, char *buf) | |
289 | { | |
290 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
291 | ssize_t ret; | |
292 | int val = 0; | |
293 | ||
294 | if (test_bit(DFL_BLOCK_LOCKS, &ls->ls_flags)) | |
295 | val = 1; | |
296 | ret = sprintf(buf, "%d\n", val); | |
297 | return ret; | |
298 | } | |
299 | ||
300 | static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
301 | { | |
302 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
303 | ssize_t ret = len; | |
304 | int val; | |
305 | ||
306 | val = simple_strtol(buf, NULL, 0); | |
307 | ||
308 | if (val == 1) | |
309 | set_bit(DFL_BLOCK_LOCKS, &ls->ls_flags); | |
310 | else if (val == 0) { | |
311 | clear_bit(DFL_BLOCK_LOCKS, &ls->ls_flags); | |
312 | smp_mb__after_clear_bit(); | |
313 | gfs2_glock_thaw(sdp); | |
314 | } else { | |
315 | ret = -EINVAL; | |
316 | } | |
317 | return ret; | |
318 | } | |
319 | ||
f057f6cd SW |
320 | static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf) |
321 | { | |
322 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
323 | return sprintf(buf, "%d\n", ls->ls_first); | |
324 | } | |
325 | ||
326 | static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf) | |
327 | { | |
328 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
329 | return sprintf(buf, "%d\n", ls->ls_first_done); | |
330 | } | |
331 | ||
fe64d517 | 332 | static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
f057f6cd | 333 | { |
fe64d517 | 334 | unsigned jid; |
f057f6cd | 335 | struct gfs2_jdesc *jd; |
fe64d517 SW |
336 | int rv; |
337 | ||
338 | rv = sscanf(buf, "%u", &jid); | |
339 | if (rv != 1) | |
340 | return -EINVAL; | |
f057f6cd | 341 | |
fe64d517 | 342 | rv = -ESHUTDOWN; |
f057f6cd | 343 | spin_lock(&sdp->sd_jindex_spin); |
fe64d517 SW |
344 | if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) |
345 | goto out; | |
346 | rv = -EBUSY; | |
347 | if (sdp->sd_jdesc->jd_jid == jid) | |
348 | goto out; | |
349 | rv = -ENOENT; | |
f057f6cd SW |
350 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { |
351 | if (jd->jd_jid != jid) | |
352 | continue; | |
fe64d517 | 353 | rv = slow_work_enqueue(&jd->jd_work); |
f057f6cd SW |
354 | break; |
355 | } | |
fe64d517 | 356 | out: |
f057f6cd | 357 | spin_unlock(&sdp->sd_jindex_spin); |
fe64d517 | 358 | return rv ? rv : len; |
f057f6cd SW |
359 | } |
360 | ||
361 | static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf) | |
362 | { | |
363 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
364 | return sprintf(buf, "%d\n", ls->ls_recover_jid_done); | |
365 | } | |
366 | ||
367 | static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf) | |
368 | { | |
369 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
370 | return sprintf(buf, "%d\n", ls->ls_recover_jid_status); | |
371 | } | |
372 | ||
e1b28aab SW |
373 | static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf) |
374 | { | |
375 | return sprintf(buf, "%u\n", sdp->sd_lockstruct.ls_jid); | |
376 | } | |
377 | ||
f057f6cd | 378 | #define GDLM_ATTR(_name,_mode,_show,_store) \ |
48c2b613 | 379 | static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store) |
f057f6cd | 380 | |
d7e623da SW |
381 | GDLM_ATTR(proto_name, 0444, proto_name_show, NULL); |
382 | GDLM_ATTR(block, 0644, block_show, block_store); | |
383 | GDLM_ATTR(withdraw, 0644, withdraw_show, withdraw_store); | |
d7e623da SW |
384 | GDLM_ATTR(jid, 0444, jid_show, NULL); |
385 | GDLM_ATTR(first, 0444, lkfirst_show, NULL); | |
386 | GDLM_ATTR(first_done, 0444, first_done_show, NULL); | |
387 | GDLM_ATTR(recover, 0600, NULL, recover_store); | |
388 | GDLM_ATTR(recover_done, 0444, recover_done_show, NULL); | |
389 | GDLM_ATTR(recover_status, 0444, recover_status_show, NULL); | |
f057f6cd SW |
390 | |
391 | static struct attribute *lock_module_attrs[] = { | |
392 | &gdlm_attr_proto_name.attr, | |
393 | &gdlm_attr_block.attr, | |
394 | &gdlm_attr_withdraw.attr, | |
e1b28aab | 395 | &gdlm_attr_jid.attr, |
f057f6cd SW |
396 | &gdlm_attr_first.attr, |
397 | &gdlm_attr_first_done.attr, | |
398 | &gdlm_attr_recover.attr, | |
399 | &gdlm_attr_recover_done.attr, | |
400 | &gdlm_attr_recover_status.attr, | |
ea67eedb | 401 | NULL, |
b3b94faa DT |
402 | }; |
403 | ||
b3b94faa DT |
404 | /* |
405 | * get and set struct gfs2_tune fields | |
406 | */ | |
407 | ||
408 | static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) | |
409 | { | |
3204a6c0 DT |
410 | return snprintf(buf, PAGE_SIZE, "%u %u\n", |
411 | sdp->sd_tune.gt_quota_scale_num, | |
412 | sdp->sd_tune.gt_quota_scale_den); | |
b3b94faa DT |
413 | } |
414 | ||
415 | static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, | |
416 | size_t len) | |
417 | { | |
418 | struct gfs2_tune *gt = &sdp->sd_tune; | |
419 | unsigned int x, y; | |
420 | ||
421 | if (!capable(CAP_SYS_ADMIN)) | |
422 | return -EACCES; | |
423 | ||
424 | if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) | |
425 | return -EINVAL; | |
426 | ||
427 | spin_lock(>->gt_spin); | |
428 | gt->gt_quota_scale_num = x; | |
429 | gt->gt_quota_scale_den = y; | |
430 | spin_unlock(>->gt_spin); | |
431 | return len; | |
432 | } | |
433 | ||
434 | static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, | |
435 | int check_zero, const char *buf, size_t len) | |
436 | { | |
437 | struct gfs2_tune *gt = &sdp->sd_tune; | |
438 | unsigned int x; | |
439 | ||
440 | if (!capable(CAP_SYS_ADMIN)) | |
441 | return -EACCES; | |
442 | ||
443 | x = simple_strtoul(buf, NULL, 0); | |
444 | ||
445 | if (check_zero && !x) | |
446 | return -EINVAL; | |
447 | ||
448 | spin_lock(>->gt_spin); | |
449 | *field = x; | |
450 | spin_unlock(>->gt_spin); | |
451 | return len; | |
452 | } | |
453 | ||
b3b94faa | 454 | #define TUNE_ATTR_3(name, show, store) \ |
48c2b613 | 455 | static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store) |
b3b94faa DT |
456 | |
457 | #define TUNE_ATTR_2(name, store) \ | |
458 | static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ | |
459 | { \ | |
3204a6c0 | 460 | return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \ |
b3b94faa DT |
461 | } \ |
462 | TUNE_ATTR_3(name, name##_show, store) | |
463 | ||
464 | #define TUNE_ATTR(name, check_zero) \ | |
465 | static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ | |
466 | { \ | |
467 | return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ | |
468 | } \ | |
469 | TUNE_ATTR_2(name, name##_store) | |
470 | ||
b3b94faa DT |
471 | TUNE_ATTR(incore_log_blocks, 0); |
472 | TUNE_ATTR(log_flush_secs, 0); | |
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_incore_log_blocks.attr, |
485 | &tune_attr_log_flush_secs.attr, | |
b3b94faa DT |
486 | &tune_attr_quota_warn_period.attr, |
487 | &tune_attr_quota_quantum.attr, | |
b3b94faa DT |
488 | &tune_attr_max_readahead.attr, |
489 | &tune_attr_complain_secs.attr, | |
b3b94faa DT |
490 | &tune_attr_statfs_slow.attr, |
491 | &tune_attr_quota_simul_sync.attr, | |
b3b94faa | 492 | &tune_attr_statfs_quantum.attr, |
b3b94faa DT |
493 | &tune_attr_quota_scale.attr, |
494 | &tune_attr_new_files_jdata.attr, | |
ea67eedb | 495 | NULL, |
b3b94faa DT |
496 | }; |
497 | ||
b3b94faa DT |
498 | static struct attribute_group tune_group = { |
499 | .name = "tune", | |
ea67eedb | 500 | .attrs = tune_attrs, |
b3b94faa DT |
501 | }; |
502 | ||
f057f6cd SW |
503 | static struct attribute_group lock_module_group = { |
504 | .name = "lock_module", | |
505 | .attrs = lock_module_attrs, | |
506 | }; | |
507 | ||
b3b94faa DT |
508 | int gfs2_sys_fs_add(struct gfs2_sbd *sdp) |
509 | { | |
440d6da2 | 510 | struct super_block *sb = sdp->sd_vfs; |
b3b94faa | 511 | int error; |
440d6da2 SW |
512 | char ro[20]; |
513 | char spectator[20]; | |
514 | char *envp[] = { ro, spectator, NULL }; | |
515 | ||
516 | sprintf(ro, "RDONLY=%d", (sb->s_flags & MS_RDONLY) ? 1 : 0); | |
517 | sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); | |
b3b94faa | 518 | |
9bec101a | 519 | sdp->sd_kobj.kset = gfs2_kset; |
901195ed GKH |
520 | error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL, |
521 | "%s", sdp->sd_table_name); | |
b3b94faa DT |
522 | if (error) |
523 | goto fail; | |
524 | ||
b3b94faa DT |
525 | error = sysfs_create_group(&sdp->sd_kobj, &tune_group); |
526 | if (error) | |
f6eb5349 | 527 | goto fail_reg; |
b3b94faa | 528 | |
f057f6cd SW |
529 | error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group); |
530 | if (error) | |
531 | goto fail_tune; | |
532 | ||
31e54b01 SW |
533 | error = sysfs_create_link(&sdp->sd_kobj, |
534 | &disk_to_dev(sb->s_bdev->bd_disk)->kobj, | |
535 | "device"); | |
536 | if (error) | |
537 | goto fail_lock_module; | |
538 | ||
440d6da2 | 539 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_ADD, envp); |
b3b94faa DT |
540 | return 0; |
541 | ||
31e54b01 SW |
542 | fail_lock_module: |
543 | sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); | |
f057f6cd SW |
544 | fail_tune: |
545 | sysfs_remove_group(&sdp->sd_kobj, &tune_group); | |
a91ea69f | 546 | fail_reg: |
197b12d6 | 547 | kobject_put(&sdp->sd_kobj); |
a91ea69f | 548 | fail: |
65952fb4 | 549 | fs_err(sdp, "error %d adding sysfs files", error); |
b3b94faa DT |
550 | return error; |
551 | } | |
552 | ||
553 | void gfs2_sys_fs_del(struct gfs2_sbd *sdp) | |
554 | { | |
31e54b01 | 555 | sysfs_remove_link(&sdp->sd_kobj, "device"); |
b3b94faa | 556 | sysfs_remove_group(&sdp->sd_kobj, &tune_group); |
f057f6cd | 557 | sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); |
197b12d6 | 558 | kobject_put(&sdp->sd_kobj); |
b3b94faa DT |
559 | } |
560 | ||
fdd1062e SW |
561 | static int gfs2_uevent(struct kset *kset, struct kobject *kobj, |
562 | struct kobj_uevent_env *env) | |
563 | { | |
564 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); | |
02e3cc70 SW |
565 | const u8 *uuid = sdp->sd_sb.sb_uuid; |
566 | ||
fdd1062e SW |
567 | add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name); |
568 | add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name); | |
440d6da2 SW |
569 | if (!sdp->sd_args.ar_spectator) |
570 | add_uevent_var(env, "JOURNALID=%u", sdp->sd_lockstruct.ls_jid); | |
f0b34ae6 JP |
571 | if (gfs2_uuid_valid(uuid)) |
572 | add_uevent_var(env, "UUID=%pUB", uuid); | |
fdd1062e SW |
573 | return 0; |
574 | } | |
575 | ||
9cd43611 | 576 | static const struct kset_uevent_ops gfs2_uevent_ops = { |
fdd1062e SW |
577 | .uevent = gfs2_uevent, |
578 | }; | |
579 | ||
b3b94faa DT |
580 | int gfs2_sys_init(void) |
581 | { | |
fdd1062e | 582 | gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj); |
9bec101a GKH |
583 | if (!gfs2_kset) |
584 | return -ENOMEM; | |
585 | return 0; | |
b3b94faa DT |
586 | } |
587 | ||
588 | void gfs2_sys_uninit(void) | |
589 | { | |
9bec101a | 590 | kset_unregister(gfs2_kset); |
b3b94faa DT |
591 | } |
592 |