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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> | |
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" |
6ecd7c2d | 28 | #include "recovery.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 | ||
52cf25d0 | 52 | static const struct sysfs_ops gfs2_attr_ops = { |
48c2b613 SW |
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; | |
f0b34ae6 | 88 | return snprintf(buf, PAGE_SIZE, "%pUB\n", uuid); |
02e3cc70 SW |
89 | } |
90 | ||
b3b94faa DT |
91 | static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) |
92 | { | |
93 | unsigned int count; | |
94 | ||
f55ab26a | 95 | mutex_lock(&sdp->sd_freeze_lock); |
b3b94faa | 96 | count = sdp->sd_freeze_count; |
f55ab26a | 97 | mutex_unlock(&sdp->sd_freeze_lock); |
b3b94faa | 98 | |
3204a6c0 | 99 | return snprintf(buf, PAGE_SIZE, "%u\n", count); |
b3b94faa DT |
100 | } |
101 | ||
102 | static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
103 | { | |
104 | ssize_t ret = len; | |
105 | int error = 0; | |
106 | int n = simple_strtol(buf, NULL, 0); | |
107 | ||
108 | if (!capable(CAP_SYS_ADMIN)) | |
109 | return -EACCES; | |
110 | ||
111 | switch (n) { | |
112 | case 0: | |
113 | gfs2_unfreeze_fs(sdp); | |
114 | break; | |
115 | case 1: | |
116 | error = gfs2_freeze_fs(sdp); | |
117 | break; | |
118 | default: | |
119 | ret = -EINVAL; | |
120 | } | |
121 | ||
122 | if (error) | |
123 | fs_warn(sdp, "freeze %d error %d", n, error); | |
124 | ||
125 | return ret; | |
126 | } | |
127 | ||
128 | static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf) | |
129 | { | |
130 | unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags); | |
3204a6c0 | 131 | return snprintf(buf, PAGE_SIZE, "%u\n", b); |
b3b94faa DT |
132 | } |
133 | ||
134 | static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
135 | { | |
136 | if (!capable(CAP_SYS_ADMIN)) | |
137 | return -EACCES; | |
138 | ||
139 | if (simple_strtol(buf, NULL, 0) != 1) | |
140 | return -EINVAL; | |
141 | ||
142 | gfs2_lm_withdraw(sdp, | |
143 | "GFS2: fsid=%s: withdrawing from cluster at user's request\n", | |
144 | sdp->sd_fsname); | |
145 | return len; | |
146 | } | |
147 | ||
148 | static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, | |
149 | size_t len) | |
150 | { | |
151 | if (!capable(CAP_SYS_ADMIN)) | |
152 | return -EACCES; | |
153 | ||
154 | if (simple_strtol(buf, NULL, 0) != 1) | |
155 | return -EINVAL; | |
156 | ||
8c42d637 | 157 | gfs2_statfs_sync(sdp->sd_vfs, 0); |
b3b94faa DT |
158 | return len; |
159 | } | |
160 | ||
b3b94faa DT |
161 | static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, |
162 | size_t len) | |
163 | { | |
164 | if (!capable(CAP_SYS_ADMIN)) | |
165 | return -EACCES; | |
166 | ||
167 | if (simple_strtol(buf, NULL, 0) != 1) | |
168 | return -EINVAL; | |
169 | ||
5fb324ad | 170 | gfs2_quota_sync(sdp->sd_vfs, 0, 1); |
b3b94faa DT |
171 | return len; |
172 | } | |
173 | ||
174 | static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf, | |
175 | size_t len) | |
176 | { | |
ea762338 | 177 | int error; |
cd915493 | 178 | u32 id; |
b3b94faa DT |
179 | |
180 | if (!capable(CAP_SYS_ADMIN)) | |
181 | return -EACCES; | |
182 | ||
183 | id = simple_strtoul(buf, NULL, 0); | |
184 | ||
ea762338 SW |
185 | error = gfs2_quota_refresh(sdp, 1, id); |
186 | return error ? error : len; | |
b3b94faa DT |
187 | } |
188 | ||
189 | static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, | |
190 | size_t len) | |
191 | { | |
ea762338 | 192 | int error; |
cd915493 | 193 | u32 id; |
b3b94faa DT |
194 | |
195 | if (!capable(CAP_SYS_ADMIN)) | |
196 | return -EACCES; | |
197 | ||
198 | id = simple_strtoul(buf, NULL, 0); | |
199 | ||
ea762338 SW |
200 | error = gfs2_quota_refresh(sdp, 0, id); |
201 | return error ? error : len; | |
b3b94faa DT |
202 | } |
203 | ||
64d576ba SW |
204 | static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
205 | { | |
206 | struct gfs2_glock *gl; | |
207 | const struct gfs2_glock_operations *glops; | |
208 | unsigned int glmode; | |
209 | unsigned int gltype; | |
210 | unsigned long long glnum; | |
211 | char mode[16]; | |
212 | int rv; | |
213 | ||
214 | if (!capable(CAP_SYS_ADMIN)) | |
215 | return -EACCES; | |
216 | ||
217 | rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum, | |
218 | mode); | |
219 | if (rv != 3) | |
220 | return -EINVAL; | |
221 | ||
222 | if (strcmp(mode, "EX") == 0) | |
223 | glmode = LM_ST_UNLOCKED; | |
224 | else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0)) | |
225 | glmode = LM_ST_DEFERRED; | |
226 | else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0)) | |
227 | glmode = LM_ST_SHARED; | |
228 | else | |
229 | return -EINVAL; | |
230 | ||
231 | if (gltype > LM_TYPE_JOURNAL) | |
232 | return -EINVAL; | |
233 | glops = gfs2_glops_list[gltype]; | |
234 | if (glops == NULL) | |
235 | return -EINVAL; | |
6a99be5d | 236 | if (!test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags)) |
913a71d2 | 237 | fs_info(sdp, "demote interface used\n"); |
64d576ba SW |
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 | ||
ba6e9364 SW |
329 | static ssize_t lkfirst_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
330 | { | |
331 | unsigned first; | |
332 | int rv; | |
333 | ||
334 | rv = sscanf(buf, "%u", &first); | |
335 | if (rv != 1 || first > 1) | |
336 | return -EINVAL; | |
337 | spin_lock(&sdp->sd_jindex_spin); | |
338 | rv = -EBUSY; | |
339 | if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) | |
340 | goto out; | |
341 | rv = -EINVAL; | |
342 | if (sdp->sd_args.ar_spectator) | |
343 | goto out; | |
344 | if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) | |
345 | goto out; | |
346 | sdp->sd_lockstruct.ls_first = first; | |
347 | rv = 0; | |
348 | out: | |
349 | spin_unlock(&sdp->sd_jindex_spin); | |
350 | return rv ? rv : len; | |
351 | } | |
352 | ||
f057f6cd SW |
353 | static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf) |
354 | { | |
355 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
356 | return sprintf(buf, "%d\n", ls->ls_first_done); | |
357 | } | |
358 | ||
fe64d517 | 359 | static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
f057f6cd | 360 | { |
fe64d517 | 361 | unsigned jid; |
f057f6cd | 362 | struct gfs2_jdesc *jd; |
fe64d517 SW |
363 | int rv; |
364 | ||
365 | rv = sscanf(buf, "%u", &jid); | |
366 | if (rv != 1) | |
367 | return -EINVAL; | |
f057f6cd | 368 | |
fe64d517 | 369 | rv = -ESHUTDOWN; |
f057f6cd | 370 | spin_lock(&sdp->sd_jindex_spin); |
fe64d517 SW |
371 | if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) |
372 | goto out; | |
373 | rv = -EBUSY; | |
374 | if (sdp->sd_jdesc->jd_jid == jid) | |
375 | goto out; | |
376 | rv = -ENOENT; | |
f057f6cd SW |
377 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { |
378 | if (jd->jd_jid != jid) | |
379 | continue; | |
6ecd7c2d | 380 | rv = gfs2_recover_journal(jd, false); |
f057f6cd SW |
381 | break; |
382 | } | |
fe64d517 | 383 | out: |
f057f6cd | 384 | spin_unlock(&sdp->sd_jindex_spin); |
fe64d517 | 385 | return rv ? rv : len; |
f057f6cd SW |
386 | } |
387 | ||
388 | static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf) | |
389 | { | |
390 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
391 | return sprintf(buf, "%d\n", ls->ls_recover_jid_done); | |
392 | } | |
393 | ||
394 | static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf) | |
395 | { | |
396 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
397 | return sprintf(buf, "%d\n", ls->ls_recover_jid_status); | |
398 | } | |
399 | ||
e1b28aab SW |
400 | static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf) |
401 | { | |
402 | return sprintf(buf, "%u\n", sdp->sd_lockstruct.ls_jid); | |
403 | } | |
404 | ||
ba6e9364 SW |
405 | static ssize_t jid_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
406 | { | |
407 | unsigned jid; | |
408 | int rv; | |
409 | ||
410 | rv = sscanf(buf, "%u", &jid); | |
411 | if (rv != 1) | |
412 | return -EINVAL; | |
413 | ||
414 | spin_lock(&sdp->sd_jindex_spin); | |
415 | rv = -EINVAL; | |
416 | if (sdp->sd_args.ar_spectator) | |
417 | goto out; | |
418 | if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) | |
419 | goto out; | |
420 | rv = -EBUSY; | |
421 | if (test_and_clear_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) | |
422 | goto out; | |
423 | sdp->sd_lockstruct.ls_jid = jid; | |
424 | smp_mb__after_clear_bit(); | |
425 | wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID); | |
426 | rv = 0; | |
427 | out: | |
428 | spin_unlock(&sdp->sd_jindex_spin); | |
429 | return rv ? rv : len; | |
430 | } | |
431 | ||
f057f6cd | 432 | #define GDLM_ATTR(_name,_mode,_show,_store) \ |
48c2b613 | 433 | static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store) |
f057f6cd | 434 | |
d7e623da SW |
435 | GDLM_ATTR(proto_name, 0444, proto_name_show, NULL); |
436 | GDLM_ATTR(block, 0644, block_show, block_store); | |
437 | GDLM_ATTR(withdraw, 0644, withdraw_show, withdraw_store); | |
ba6e9364 SW |
438 | GDLM_ATTR(jid, 0644, jid_show, jid_store); |
439 | GDLM_ATTR(first, 0644, lkfirst_show, lkfirst_store); | |
d7e623da SW |
440 | GDLM_ATTR(first_done, 0444, first_done_show, NULL); |
441 | GDLM_ATTR(recover, 0600, NULL, recover_store); | |
442 | GDLM_ATTR(recover_done, 0444, recover_done_show, NULL); | |
443 | GDLM_ATTR(recover_status, 0444, recover_status_show, NULL); | |
f057f6cd SW |
444 | |
445 | static struct attribute *lock_module_attrs[] = { | |
446 | &gdlm_attr_proto_name.attr, | |
447 | &gdlm_attr_block.attr, | |
448 | &gdlm_attr_withdraw.attr, | |
e1b28aab | 449 | &gdlm_attr_jid.attr, |
f057f6cd SW |
450 | &gdlm_attr_first.attr, |
451 | &gdlm_attr_first_done.attr, | |
452 | &gdlm_attr_recover.attr, | |
453 | &gdlm_attr_recover_done.attr, | |
454 | &gdlm_attr_recover_status.attr, | |
ea67eedb | 455 | NULL, |
b3b94faa DT |
456 | }; |
457 | ||
b3b94faa DT |
458 | /* |
459 | * get and set struct gfs2_tune fields | |
460 | */ | |
461 | ||
462 | static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) | |
463 | { | |
3204a6c0 DT |
464 | return snprintf(buf, PAGE_SIZE, "%u %u\n", |
465 | sdp->sd_tune.gt_quota_scale_num, | |
466 | sdp->sd_tune.gt_quota_scale_den); | |
b3b94faa DT |
467 | } |
468 | ||
469 | static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, | |
470 | size_t len) | |
471 | { | |
472 | struct gfs2_tune *gt = &sdp->sd_tune; | |
473 | unsigned int x, y; | |
474 | ||
475 | if (!capable(CAP_SYS_ADMIN)) | |
476 | return -EACCES; | |
477 | ||
478 | if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) | |
479 | return -EINVAL; | |
480 | ||
481 | spin_lock(>->gt_spin); | |
482 | gt->gt_quota_scale_num = x; | |
483 | gt->gt_quota_scale_den = y; | |
484 | spin_unlock(>->gt_spin); | |
485 | return len; | |
486 | } | |
487 | ||
488 | static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, | |
489 | int check_zero, const char *buf, size_t len) | |
490 | { | |
491 | struct gfs2_tune *gt = &sdp->sd_tune; | |
492 | unsigned int x; | |
493 | ||
494 | if (!capable(CAP_SYS_ADMIN)) | |
495 | return -EACCES; | |
496 | ||
497 | x = simple_strtoul(buf, NULL, 0); | |
498 | ||
499 | if (check_zero && !x) | |
500 | return -EINVAL; | |
501 | ||
502 | spin_lock(>->gt_spin); | |
503 | *field = x; | |
504 | spin_unlock(>->gt_spin); | |
505 | return len; | |
506 | } | |
507 | ||
b3b94faa | 508 | #define TUNE_ATTR_3(name, show, store) \ |
48c2b613 | 509 | static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store) |
b3b94faa DT |
510 | |
511 | #define TUNE_ATTR_2(name, store) \ | |
512 | static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ | |
513 | { \ | |
3204a6c0 | 514 | return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \ |
b3b94faa DT |
515 | } \ |
516 | TUNE_ATTR_3(name, name##_show, store) | |
517 | ||
518 | #define TUNE_ATTR(name, check_zero) \ | |
519 | static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ | |
520 | { \ | |
521 | return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ | |
522 | } \ | |
523 | TUNE_ATTR_2(name, name##_store) | |
524 | ||
b3b94faa DT |
525 | TUNE_ATTR(quota_warn_period, 0); |
526 | TUNE_ATTR(quota_quantum, 0); | |
b3b94faa DT |
527 | TUNE_ATTR(max_readahead, 0); |
528 | TUNE_ATTR(complain_secs, 0); | |
b3b94faa DT |
529 | TUNE_ATTR(statfs_slow, 0); |
530 | TUNE_ATTR(new_files_jdata, 0); | |
b3b94faa | 531 | TUNE_ATTR(quota_simul_sync, 1); |
b3b94faa | 532 | TUNE_ATTR(statfs_quantum, 1); |
b3b94faa DT |
533 | TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); |
534 | ||
535 | static struct attribute *tune_attrs[] = { | |
b3b94faa DT |
536 | &tune_attr_quota_warn_period.attr, |
537 | &tune_attr_quota_quantum.attr, | |
b3b94faa DT |
538 | &tune_attr_max_readahead.attr, |
539 | &tune_attr_complain_secs.attr, | |
b3b94faa DT |
540 | &tune_attr_statfs_slow.attr, |
541 | &tune_attr_quota_simul_sync.attr, | |
b3b94faa | 542 | &tune_attr_statfs_quantum.attr, |
b3b94faa DT |
543 | &tune_attr_quota_scale.attr, |
544 | &tune_attr_new_files_jdata.attr, | |
ea67eedb | 545 | NULL, |
b3b94faa DT |
546 | }; |
547 | ||
b3b94faa DT |
548 | static struct attribute_group tune_group = { |
549 | .name = "tune", | |
ea67eedb | 550 | .attrs = tune_attrs, |
b3b94faa DT |
551 | }; |
552 | ||
f057f6cd SW |
553 | static struct attribute_group lock_module_group = { |
554 | .name = "lock_module", | |
555 | .attrs = lock_module_attrs, | |
556 | }; | |
557 | ||
b3b94faa DT |
558 | int gfs2_sys_fs_add(struct gfs2_sbd *sdp) |
559 | { | |
440d6da2 | 560 | struct super_block *sb = sdp->sd_vfs; |
b3b94faa | 561 | int error; |
440d6da2 SW |
562 | char ro[20]; |
563 | char spectator[20]; | |
564 | char *envp[] = { ro, spectator, NULL }; | |
565 | ||
566 | sprintf(ro, "RDONLY=%d", (sb->s_flags & MS_RDONLY) ? 1 : 0); | |
567 | sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); | |
b3b94faa | 568 | |
9bec101a | 569 | sdp->sd_kobj.kset = gfs2_kset; |
901195ed GKH |
570 | error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL, |
571 | "%s", sdp->sd_table_name); | |
b3b94faa DT |
572 | if (error) |
573 | goto fail; | |
574 | ||
b3b94faa DT |
575 | error = sysfs_create_group(&sdp->sd_kobj, &tune_group); |
576 | if (error) | |
f6eb5349 | 577 | goto fail_reg; |
b3b94faa | 578 | |
f057f6cd SW |
579 | error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group); |
580 | if (error) | |
581 | goto fail_tune; | |
582 | ||
31e54b01 SW |
583 | error = sysfs_create_link(&sdp->sd_kobj, |
584 | &disk_to_dev(sb->s_bdev->bd_disk)->kobj, | |
585 | "device"); | |
586 | if (error) | |
587 | goto fail_lock_module; | |
588 | ||
440d6da2 | 589 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_ADD, envp); |
b3b94faa DT |
590 | return 0; |
591 | ||
31e54b01 SW |
592 | fail_lock_module: |
593 | sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); | |
f057f6cd SW |
594 | fail_tune: |
595 | sysfs_remove_group(&sdp->sd_kobj, &tune_group); | |
a91ea69f | 596 | fail_reg: |
197b12d6 | 597 | kobject_put(&sdp->sd_kobj); |
a91ea69f | 598 | fail: |
65952fb4 | 599 | fs_err(sdp, "error %d adding sysfs files", error); |
b3b94faa DT |
600 | return error; |
601 | } | |
602 | ||
603 | void gfs2_sys_fs_del(struct gfs2_sbd *sdp) | |
604 | { | |
31e54b01 | 605 | sysfs_remove_link(&sdp->sd_kobj, "device"); |
b3b94faa | 606 | sysfs_remove_group(&sdp->sd_kobj, &tune_group); |
f057f6cd | 607 | sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); |
197b12d6 | 608 | kobject_put(&sdp->sd_kobj); |
b3b94faa DT |
609 | } |
610 | ||
fdd1062e SW |
611 | static int gfs2_uevent(struct kset *kset, struct kobject *kobj, |
612 | struct kobj_uevent_env *env) | |
613 | { | |
614 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); | |
02e3cc70 SW |
615 | const u8 *uuid = sdp->sd_sb.sb_uuid; |
616 | ||
fdd1062e SW |
617 | add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name); |
618 | add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name); | |
ba6e9364 | 619 | if (!test_bit(SDF_NOJOURNALID, &sdp->sd_flags)) |
440d6da2 | 620 | add_uevent_var(env, "JOURNALID=%u", sdp->sd_lockstruct.ls_jid); |
f0b34ae6 JP |
621 | if (gfs2_uuid_valid(uuid)) |
622 | add_uevent_var(env, "UUID=%pUB", uuid); | |
fdd1062e SW |
623 | return 0; |
624 | } | |
625 | ||
9cd43611 | 626 | static const struct kset_uevent_ops gfs2_uevent_ops = { |
fdd1062e SW |
627 | .uevent = gfs2_uevent, |
628 | }; | |
629 | ||
b3b94faa DT |
630 | int gfs2_sys_init(void) |
631 | { | |
fdd1062e | 632 | gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj); |
9bec101a GKH |
633 | if (!gfs2_kset) |
634 | return -ENOMEM; | |
635 | return 0; | |
b3b94faa DT |
636 | } |
637 | ||
638 | void gfs2_sys_uninit(void) | |
639 | { | |
9bec101a | 640 | kset_unregister(gfs2_kset); |
b3b94faa DT |
641 | } |
642 |