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> | |
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> | |
b3b94faa | 17 | #include <asm/uaccess.h> |
f057f6cd | 18 | #include <linux/gfs2_ondisk.h> |
31e54b01 | 19 | #include <linux/genhd.h> |
b3b94faa DT |
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" |
64d576ba | 28 | #include "glops.h" |
b3b94faa | 29 | |
48c2b613 SW |
30 | struct gfs2_attr { |
31 | struct attribute attr; | |
32 | ssize_t (*show)(struct gfs2_sbd *, char *); | |
33 | ssize_t (*store)(struct gfs2_sbd *, const char *, size_t); | |
34 | }; | |
35 | ||
36 | static ssize_t gfs2_attr_show(struct kobject *kobj, struct attribute *attr, | |
37 | char *buf) | |
38 | { | |
39 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); | |
40 | struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); | |
41 | return a->show ? a->show(sdp, buf) : 0; | |
42 | } | |
43 | ||
44 | static ssize_t gfs2_attr_store(struct kobject *kobj, struct attribute *attr, | |
45 | const char *buf, size_t len) | |
46 | { | |
47 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); | |
48 | struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); | |
49 | return a->store ? a->store(sdp, buf, len) : len; | |
50 | } | |
51 | ||
52 | static struct sysfs_ops gfs2_attr_ops = { | |
53 | .show = gfs2_attr_show, | |
54 | .store = gfs2_attr_store, | |
55 | }; | |
56 | ||
57 | ||
58 | static struct kset *gfs2_kset; | |
59 | ||
b3b94faa DT |
60 | static ssize_t id_show(struct gfs2_sbd *sdp, char *buf) |
61 | { | |
c7227e46 BP |
62 | return snprintf(buf, PAGE_SIZE, "%u:%u\n", |
63 | MAJOR(sdp->sd_vfs->s_dev), MINOR(sdp->sd_vfs->s_dev)); | |
b3b94faa DT |
64 | } |
65 | ||
66 | static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf) | |
67 | { | |
3204a6c0 | 68 | return snprintf(buf, PAGE_SIZE, "%s\n", sdp->sd_fsname); |
b3b94faa DT |
69 | } |
70 | ||
02e3cc70 SW |
71 | static int gfs2_uuid_valid(const u8 *uuid) |
72 | { | |
73 | int i; | |
74 | ||
75 | for (i = 0; i < 16; i++) { | |
76 | if (uuid[i]) | |
77 | return 1; | |
78 | } | |
79 | return 0; | |
80 | } | |
81 | ||
82 | static ssize_t uuid_show(struct gfs2_sbd *sdp, char *buf) | |
83 | { | |
84 | const u8 *uuid = sdp->sd_sb.sb_uuid; | |
85 | buf[0] = '\0'; | |
86 | if (!gfs2_uuid_valid(uuid)) | |
87 | return 0; | |
88 | return snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X-%02X%02X-" | |
89 | "%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X\n", | |
90 | uuid[0], uuid[1], uuid[2], uuid[3], uuid[4], uuid[5], | |
91 | uuid[6], uuid[7], uuid[8], uuid[9], uuid[10], uuid[11], | |
92 | uuid[12], uuid[13], uuid[14], uuid[15]); | |
93 | } | |
94 | ||
b3b94faa DT |
95 | static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) |
96 | { | |
97 | unsigned int count; | |
98 | ||
f55ab26a | 99 | mutex_lock(&sdp->sd_freeze_lock); |
b3b94faa | 100 | count = sdp->sd_freeze_count; |
f55ab26a | 101 | mutex_unlock(&sdp->sd_freeze_lock); |
b3b94faa | 102 | |
3204a6c0 | 103 | return snprintf(buf, PAGE_SIZE, "%u\n", count); |
b3b94faa DT |
104 | } |
105 | ||
106 | static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
107 | { | |
108 | ssize_t ret = len; | |
109 | int error = 0; | |
110 | int n = simple_strtol(buf, NULL, 0); | |
111 | ||
112 | if (!capable(CAP_SYS_ADMIN)) | |
113 | return -EACCES; | |
114 | ||
115 | switch (n) { | |
116 | case 0: | |
117 | gfs2_unfreeze_fs(sdp); | |
118 | break; | |
119 | case 1: | |
120 | error = gfs2_freeze_fs(sdp); | |
121 | break; | |
122 | default: | |
123 | ret = -EINVAL; | |
124 | } | |
125 | ||
126 | if (error) | |
127 | fs_warn(sdp, "freeze %d error %d", n, error); | |
128 | ||
129 | return ret; | |
130 | } | |
131 | ||
132 | static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf) | |
133 | { | |
134 | unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags); | |
3204a6c0 | 135 | return snprintf(buf, PAGE_SIZE, "%u\n", b); |
b3b94faa DT |
136 | } |
137 | ||
138 | static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
139 | { | |
140 | if (!capable(CAP_SYS_ADMIN)) | |
141 | return -EACCES; | |
142 | ||
143 | if (simple_strtol(buf, NULL, 0) != 1) | |
144 | return -EINVAL; | |
145 | ||
146 | gfs2_lm_withdraw(sdp, | |
147 | "GFS2: fsid=%s: withdrawing from cluster at user's request\n", | |
148 | sdp->sd_fsname); | |
149 | return len; | |
150 | } | |
151 | ||
152 | static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, | |
153 | size_t len) | |
154 | { | |
155 | if (!capable(CAP_SYS_ADMIN)) | |
156 | return -EACCES; | |
157 | ||
158 | if (simple_strtol(buf, NULL, 0) != 1) | |
159 | return -EINVAL; | |
160 | ||
161 | gfs2_statfs_sync(sdp); | |
162 | return len; | |
163 | } | |
164 | ||
b3b94faa DT |
165 | static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, |
166 | size_t len) | |
167 | { | |
168 | if (!capable(CAP_SYS_ADMIN)) | |
169 | return -EACCES; | |
170 | ||
171 | if (simple_strtol(buf, NULL, 0) != 1) | |
172 | return -EINVAL; | |
173 | ||
174 | gfs2_quota_sync(sdp); | |
175 | return len; | |
176 | } | |
177 | ||
178 | static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf, | |
179 | size_t len) | |
180 | { | |
cd915493 | 181 | u32 id; |
b3b94faa DT |
182 | |
183 | if (!capable(CAP_SYS_ADMIN)) | |
184 | return -EACCES; | |
185 | ||
186 | id = simple_strtoul(buf, NULL, 0); | |
187 | ||
188 | gfs2_quota_refresh(sdp, 1, id); | |
189 | return len; | |
190 | } | |
191 | ||
192 | static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, | |
193 | size_t len) | |
194 | { | |
cd915493 | 195 | u32 id; |
b3b94faa DT |
196 | |
197 | if (!capable(CAP_SYS_ADMIN)) | |
198 | return -EACCES; | |
199 | ||
200 | id = simple_strtoul(buf, NULL, 0); | |
201 | ||
202 | gfs2_quota_refresh(sdp, 0, id); | |
203 | return len; | |
204 | } | |
205 | ||
64d576ba SW |
206 | static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
207 | { | |
208 | struct gfs2_glock *gl; | |
209 | const struct gfs2_glock_operations *glops; | |
210 | unsigned int glmode; | |
211 | unsigned int gltype; | |
212 | unsigned long long glnum; | |
213 | char mode[16]; | |
214 | int rv; | |
215 | ||
216 | if (!capable(CAP_SYS_ADMIN)) | |
217 | return -EACCES; | |
218 | ||
219 | rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum, | |
220 | mode); | |
221 | if (rv != 3) | |
222 | return -EINVAL; | |
223 | ||
224 | if (strcmp(mode, "EX") == 0) | |
225 | glmode = LM_ST_UNLOCKED; | |
226 | else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0)) | |
227 | glmode = LM_ST_DEFERRED; | |
228 | else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0)) | |
229 | glmode = LM_ST_SHARED; | |
230 | else | |
231 | return -EINVAL; | |
232 | ||
233 | if (gltype > LM_TYPE_JOURNAL) | |
234 | return -EINVAL; | |
235 | glops = gfs2_glops_list[gltype]; | |
236 | if (glops == NULL) | |
237 | return -EINVAL; | |
238 | rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl); | |
239 | if (rv) | |
240 | return rv; | |
241 | gfs2_glock_cb(gl, glmode); | |
242 | gfs2_glock_put(gl); | |
243 | return len; | |
244 | } | |
245 | ||
b3b94faa DT |
246 | |
247 | #define GFS2_ATTR(name, mode, show, store) \ | |
248 | static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store) | |
249 | ||
250 | GFS2_ATTR(id, 0444, id_show, NULL); | |
251 | GFS2_ATTR(fsname, 0444, fsname_show, NULL); | |
02e3cc70 | 252 | GFS2_ATTR(uuid, 0444, uuid_show, NULL); |
b3b94faa | 253 | GFS2_ATTR(freeze, 0644, freeze_show, freeze_store); |
b3b94faa DT |
254 | GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store); |
255 | GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store); | |
256 | GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store); | |
257 | GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store); | |
258 | GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store); | |
64d576ba | 259 | GFS2_ATTR(demote_rq, 0200, NULL, demote_rq_store); |
b3b94faa DT |
260 | |
261 | static struct attribute *gfs2_attrs[] = { | |
262 | &gfs2_attr_id.attr, | |
263 | &gfs2_attr_fsname.attr, | |
02e3cc70 | 264 | &gfs2_attr_uuid.attr, |
b3b94faa | 265 | &gfs2_attr_freeze.attr, |
b3b94faa DT |
266 | &gfs2_attr_withdraw.attr, |
267 | &gfs2_attr_statfs_sync.attr, | |
268 | &gfs2_attr_quota_sync.attr, | |
269 | &gfs2_attr_quota_refresh_user.attr, | |
270 | &gfs2_attr_quota_refresh_group.attr, | |
64d576ba | 271 | &gfs2_attr_demote_rq.attr, |
b3b94faa DT |
272 | NULL, |
273 | }; | |
274 | ||
b3b94faa DT |
275 | static struct kobj_type gfs2_ktype = { |
276 | .default_attrs = gfs2_attrs, | |
277 | .sysfs_ops = &gfs2_attr_ops, | |
278 | }; | |
279 | ||
f057f6cd SW |
280 | |
281 | /* | |
282 | * lock_module. Originally from lock_dlm | |
283 | */ | |
284 | ||
285 | static ssize_t proto_name_show(struct gfs2_sbd *sdp, char *buf) | |
286 | { | |
287 | const struct lm_lockops *ops = sdp->sd_lockstruct.ls_ops; | |
288 | return sprintf(buf, "%s\n", ops->lm_proto_name); | |
289 | } | |
290 | ||
291 | static ssize_t block_show(struct gfs2_sbd *sdp, char *buf) | |
292 | { | |
293 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
294 | ssize_t ret; | |
295 | int val = 0; | |
296 | ||
297 | if (test_bit(DFL_BLOCK_LOCKS, &ls->ls_flags)) | |
298 | val = 1; | |
299 | ret = sprintf(buf, "%d\n", val); | |
300 | return ret; | |
301 | } | |
302 | ||
303 | static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
304 | { | |
305 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
306 | ssize_t ret = len; | |
307 | int val; | |
308 | ||
309 | val = simple_strtol(buf, NULL, 0); | |
310 | ||
311 | if (val == 1) | |
312 | set_bit(DFL_BLOCK_LOCKS, &ls->ls_flags); | |
313 | else if (val == 0) { | |
314 | clear_bit(DFL_BLOCK_LOCKS, &ls->ls_flags); | |
315 | smp_mb__after_clear_bit(); | |
316 | gfs2_glock_thaw(sdp); | |
317 | } else { | |
318 | ret = -EINVAL; | |
319 | } | |
320 | return ret; | |
321 | } | |
322 | ||
f057f6cd SW |
323 | static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf) |
324 | { | |
325 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
326 | return sprintf(buf, "%d\n", ls->ls_first); | |
327 | } | |
328 | ||
329 | static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf) | |
330 | { | |
331 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
332 | return sprintf(buf, "%d\n", ls->ls_first_done); | |
333 | } | |
334 | ||
fe64d517 | 335 | static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
f057f6cd | 336 | { |
fe64d517 | 337 | unsigned jid; |
f057f6cd | 338 | struct gfs2_jdesc *jd; |
fe64d517 SW |
339 | int rv; |
340 | ||
341 | rv = sscanf(buf, "%u", &jid); | |
342 | if (rv != 1) | |
343 | return -EINVAL; | |
f057f6cd | 344 | |
fe64d517 | 345 | rv = -ESHUTDOWN; |
f057f6cd | 346 | spin_lock(&sdp->sd_jindex_spin); |
fe64d517 SW |
347 | if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) |
348 | goto out; | |
349 | rv = -EBUSY; | |
350 | if (sdp->sd_jdesc->jd_jid == jid) | |
351 | goto out; | |
352 | rv = -ENOENT; | |
f057f6cd SW |
353 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { |
354 | if (jd->jd_jid != jid) | |
355 | continue; | |
fe64d517 | 356 | rv = slow_work_enqueue(&jd->jd_work); |
f057f6cd SW |
357 | break; |
358 | } | |
fe64d517 | 359 | out: |
f057f6cd | 360 | spin_unlock(&sdp->sd_jindex_spin); |
fe64d517 | 361 | return rv ? rv : len; |
f057f6cd SW |
362 | } |
363 | ||
364 | static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf) | |
365 | { | |
366 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
367 | return sprintf(buf, "%d\n", ls->ls_recover_jid_done); | |
368 | } | |
369 | ||
370 | static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf) | |
371 | { | |
372 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
373 | return sprintf(buf, "%d\n", ls->ls_recover_jid_status); | |
374 | } | |
375 | ||
e1b28aab SW |
376 | static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf) |
377 | { | |
378 | return sprintf(buf, "%u\n", sdp->sd_lockstruct.ls_jid); | |
379 | } | |
380 | ||
f057f6cd | 381 | #define GDLM_ATTR(_name,_mode,_show,_store) \ |
48c2b613 | 382 | static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store) |
f057f6cd | 383 | |
d7e623da SW |
384 | GDLM_ATTR(proto_name, 0444, proto_name_show, NULL); |
385 | GDLM_ATTR(block, 0644, block_show, block_store); | |
386 | GDLM_ATTR(withdraw, 0644, withdraw_show, withdraw_store); | |
d7e623da SW |
387 | GDLM_ATTR(jid, 0444, jid_show, NULL); |
388 | GDLM_ATTR(first, 0444, lkfirst_show, NULL); | |
389 | GDLM_ATTR(first_done, 0444, first_done_show, NULL); | |
390 | GDLM_ATTR(recover, 0600, NULL, recover_store); | |
391 | GDLM_ATTR(recover_done, 0444, recover_done_show, NULL); | |
392 | GDLM_ATTR(recover_status, 0444, recover_status_show, NULL); | |
f057f6cd SW |
393 | |
394 | static struct attribute *lock_module_attrs[] = { | |
395 | &gdlm_attr_proto_name.attr, | |
396 | &gdlm_attr_block.attr, | |
397 | &gdlm_attr_withdraw.attr, | |
e1b28aab | 398 | &gdlm_attr_jid.attr, |
f057f6cd SW |
399 | &gdlm_attr_first.attr, |
400 | &gdlm_attr_first_done.attr, | |
401 | &gdlm_attr_recover.attr, | |
402 | &gdlm_attr_recover_done.attr, | |
403 | &gdlm_attr_recover_status.attr, | |
ea67eedb | 404 | NULL, |
b3b94faa DT |
405 | }; |
406 | ||
b3b94faa DT |
407 | /* |
408 | * get and set struct gfs2_tune fields | |
409 | */ | |
410 | ||
411 | static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) | |
412 | { | |
3204a6c0 DT |
413 | return snprintf(buf, PAGE_SIZE, "%u %u\n", |
414 | sdp->sd_tune.gt_quota_scale_num, | |
415 | sdp->sd_tune.gt_quota_scale_den); | |
b3b94faa DT |
416 | } |
417 | ||
418 | static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, | |
419 | size_t len) | |
420 | { | |
421 | struct gfs2_tune *gt = &sdp->sd_tune; | |
422 | unsigned int x, y; | |
423 | ||
424 | if (!capable(CAP_SYS_ADMIN)) | |
425 | return -EACCES; | |
426 | ||
427 | if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) | |
428 | return -EINVAL; | |
429 | ||
430 | spin_lock(>->gt_spin); | |
431 | gt->gt_quota_scale_num = x; | |
432 | gt->gt_quota_scale_den = y; | |
433 | spin_unlock(>->gt_spin); | |
434 | return len; | |
435 | } | |
436 | ||
437 | static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, | |
438 | int check_zero, const char *buf, size_t len) | |
439 | { | |
440 | struct gfs2_tune *gt = &sdp->sd_tune; | |
441 | unsigned int x; | |
442 | ||
443 | if (!capable(CAP_SYS_ADMIN)) | |
444 | return -EACCES; | |
445 | ||
446 | x = simple_strtoul(buf, NULL, 0); | |
447 | ||
448 | if (check_zero && !x) | |
449 | return -EINVAL; | |
450 | ||
451 | spin_lock(>->gt_spin); | |
452 | *field = x; | |
453 | spin_unlock(>->gt_spin); | |
454 | return len; | |
455 | } | |
456 | ||
b3b94faa | 457 | #define TUNE_ATTR_3(name, show, store) \ |
48c2b613 | 458 | static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store) |
b3b94faa DT |
459 | |
460 | #define TUNE_ATTR_2(name, store) \ | |
461 | static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ | |
462 | { \ | |
3204a6c0 | 463 | return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \ |
b3b94faa DT |
464 | } \ |
465 | TUNE_ATTR_3(name, name##_show, store) | |
466 | ||
467 | #define TUNE_ATTR(name, check_zero) \ | |
468 | static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ | |
469 | { \ | |
470 | return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ | |
471 | } \ | |
472 | TUNE_ATTR_2(name, name##_store) | |
473 | ||
b3b94faa DT |
474 | TUNE_ATTR(incore_log_blocks, 0); |
475 | TUNE_ATTR(log_flush_secs, 0); | |
b3b94faa DT |
476 | TUNE_ATTR(quota_warn_period, 0); |
477 | TUNE_ATTR(quota_quantum, 0); | |
b3b94faa DT |
478 | TUNE_ATTR(max_readahead, 0); |
479 | TUNE_ATTR(complain_secs, 0); | |
b3b94faa DT |
480 | TUNE_ATTR(statfs_slow, 0); |
481 | TUNE_ATTR(new_files_jdata, 0); | |
b3b94faa | 482 | TUNE_ATTR(quota_simul_sync, 1); |
b3b94faa | 483 | TUNE_ATTR(stall_secs, 1); |
b3b94faa | 484 | TUNE_ATTR(statfs_quantum, 1); |
b3b94faa DT |
485 | TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); |
486 | ||
487 | static struct attribute *tune_attrs[] = { | |
b3b94faa DT |
488 | &tune_attr_incore_log_blocks.attr, |
489 | &tune_attr_log_flush_secs.attr, | |
b3b94faa DT |
490 | &tune_attr_quota_warn_period.attr, |
491 | &tune_attr_quota_quantum.attr, | |
b3b94faa DT |
492 | &tune_attr_max_readahead.attr, |
493 | &tune_attr_complain_secs.attr, | |
b3b94faa DT |
494 | &tune_attr_statfs_slow.attr, |
495 | &tune_attr_quota_simul_sync.attr, | |
b3b94faa | 496 | &tune_attr_stall_secs.attr, |
b3b94faa | 497 | &tune_attr_statfs_quantum.attr, |
b3b94faa DT |
498 | &tune_attr_quota_scale.attr, |
499 | &tune_attr_new_files_jdata.attr, | |
ea67eedb | 500 | NULL, |
b3b94faa DT |
501 | }; |
502 | ||
b3b94faa DT |
503 | static struct attribute_group tune_group = { |
504 | .name = "tune", | |
ea67eedb | 505 | .attrs = tune_attrs, |
b3b94faa DT |
506 | }; |
507 | ||
f057f6cd SW |
508 | static struct attribute_group lock_module_group = { |
509 | .name = "lock_module", | |
510 | .attrs = lock_module_attrs, | |
511 | }; | |
512 | ||
b3b94faa DT |
513 | int gfs2_sys_fs_add(struct gfs2_sbd *sdp) |
514 | { | |
440d6da2 | 515 | struct super_block *sb = sdp->sd_vfs; |
b3b94faa | 516 | int error; |
440d6da2 SW |
517 | char ro[20]; |
518 | char spectator[20]; | |
519 | char *envp[] = { ro, spectator, NULL }; | |
520 | ||
521 | sprintf(ro, "RDONLY=%d", (sb->s_flags & MS_RDONLY) ? 1 : 0); | |
522 | sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); | |
b3b94faa | 523 | |
9bec101a | 524 | sdp->sd_kobj.kset = gfs2_kset; |
901195ed GKH |
525 | error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL, |
526 | "%s", sdp->sd_table_name); | |
b3b94faa DT |
527 | if (error) |
528 | goto fail; | |
529 | ||
b3b94faa DT |
530 | error = sysfs_create_group(&sdp->sd_kobj, &tune_group); |
531 | if (error) | |
f6eb5349 | 532 | goto fail_reg; |
b3b94faa | 533 | |
f057f6cd SW |
534 | error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group); |
535 | if (error) | |
536 | goto fail_tune; | |
537 | ||
31e54b01 SW |
538 | error = sysfs_create_link(&sdp->sd_kobj, |
539 | &disk_to_dev(sb->s_bdev->bd_disk)->kobj, | |
540 | "device"); | |
541 | if (error) | |
542 | goto fail_lock_module; | |
543 | ||
440d6da2 | 544 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_ADD, envp); |
b3b94faa DT |
545 | return 0; |
546 | ||
31e54b01 SW |
547 | fail_lock_module: |
548 | sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); | |
f057f6cd SW |
549 | fail_tune: |
550 | sysfs_remove_group(&sdp->sd_kobj, &tune_group); | |
a91ea69f | 551 | fail_reg: |
197b12d6 | 552 | kobject_put(&sdp->sd_kobj); |
a91ea69f | 553 | fail: |
65952fb4 | 554 | fs_err(sdp, "error %d adding sysfs files", error); |
b3b94faa DT |
555 | return error; |
556 | } | |
557 | ||
558 | void gfs2_sys_fs_del(struct gfs2_sbd *sdp) | |
559 | { | |
31e54b01 | 560 | sysfs_remove_link(&sdp->sd_kobj, "device"); |
b3b94faa | 561 | sysfs_remove_group(&sdp->sd_kobj, &tune_group); |
f057f6cd | 562 | sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); |
197b12d6 | 563 | kobject_put(&sdp->sd_kobj); |
b3b94faa DT |
564 | } |
565 | ||
fdd1062e SW |
566 | static int gfs2_uevent(struct kset *kset, struct kobject *kobj, |
567 | struct kobj_uevent_env *env) | |
568 | { | |
569 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); | |
02e3cc70 SW |
570 | const u8 *uuid = sdp->sd_sb.sb_uuid; |
571 | ||
fdd1062e SW |
572 | add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name); |
573 | add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name); | |
440d6da2 SW |
574 | if (!sdp->sd_args.ar_spectator) |
575 | add_uevent_var(env, "JOURNALID=%u", sdp->sd_lockstruct.ls_jid); | |
02e3cc70 SW |
576 | if (gfs2_uuid_valid(uuid)) { |
577 | add_uevent_var(env, "UUID=%02X%02X%02X%02X-%02X%02X-%02X%02X-" | |
578 | "%02X%02X-%02X%02X%02X%02X%02X%02X", | |
579 | uuid[0], uuid[1], uuid[2], uuid[3], uuid[4], | |
580 | uuid[5], uuid[6], uuid[7], uuid[8], uuid[9], | |
581 | uuid[10], uuid[11], uuid[12], uuid[13], | |
582 | uuid[14], uuid[15]); | |
583 | } | |
fdd1062e SW |
584 | return 0; |
585 | } | |
586 | ||
587 | static struct kset_uevent_ops gfs2_uevent_ops = { | |
588 | .uevent = gfs2_uevent, | |
589 | }; | |
590 | ||
b3b94faa DT |
591 | int gfs2_sys_init(void) |
592 | { | |
fdd1062e | 593 | gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj); |
9bec101a GKH |
594 | if (!gfs2_kset) |
595 | return -ENOMEM; | |
596 | return 0; | |
b3b94faa DT |
597 | } |
598 | ||
599 | void gfs2_sys_uninit(void) | |
600 | { | |
9bec101a | 601 | kset_unregister(gfs2_kset); |
b3b94faa DT |
602 | } |
603 |