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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> | |
b3b94faa | 17 | #include <asm/uaccess.h> |
f057f6cd | 18 | #include <linux/gfs2_ondisk.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 | ||
51 | static struct sysfs_ops gfs2_attr_ops = { | |
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; | |
87 | return snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X-%02X%02X-" | |
88 | "%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X\n", | |
89 | uuid[0], uuid[1], uuid[2], uuid[3], uuid[4], uuid[5], | |
90 | uuid[6], uuid[7], uuid[8], uuid[9], uuid[10], uuid[11], | |
91 | uuid[12], uuid[13], uuid[14], uuid[15]); | |
92 | } | |
93 | ||
b3b94faa DT |
94 | static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) |
95 | { | |
96 | unsigned int count; | |
97 | ||
f55ab26a | 98 | mutex_lock(&sdp->sd_freeze_lock); |
b3b94faa | 99 | count = sdp->sd_freeze_count; |
f55ab26a | 100 | mutex_unlock(&sdp->sd_freeze_lock); |
b3b94faa | 101 | |
3204a6c0 | 102 | return snprintf(buf, PAGE_SIZE, "%u\n", count); |
b3b94faa DT |
103 | } |
104 | ||
105 | static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
106 | { | |
107 | ssize_t ret = len; | |
108 | int error = 0; | |
109 | int n = simple_strtol(buf, NULL, 0); | |
110 | ||
111 | if (!capable(CAP_SYS_ADMIN)) | |
112 | return -EACCES; | |
113 | ||
114 | switch (n) { | |
115 | case 0: | |
116 | gfs2_unfreeze_fs(sdp); | |
117 | break; | |
118 | case 1: | |
119 | error = gfs2_freeze_fs(sdp); | |
120 | break; | |
121 | default: | |
122 | ret = -EINVAL; | |
123 | } | |
124 | ||
125 | if (error) | |
126 | fs_warn(sdp, "freeze %d error %d", n, error); | |
127 | ||
128 | return ret; | |
129 | } | |
130 | ||
131 | static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf) | |
132 | { | |
133 | unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags); | |
3204a6c0 | 134 | return snprintf(buf, PAGE_SIZE, "%u\n", b); |
b3b94faa DT |
135 | } |
136 | ||
137 | static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
138 | { | |
139 | if (!capable(CAP_SYS_ADMIN)) | |
140 | return -EACCES; | |
141 | ||
142 | if (simple_strtol(buf, NULL, 0) != 1) | |
143 | return -EINVAL; | |
144 | ||
145 | gfs2_lm_withdraw(sdp, | |
146 | "GFS2: fsid=%s: withdrawing from cluster at user's request\n", | |
147 | sdp->sd_fsname); | |
148 | return len; | |
149 | } | |
150 | ||
151 | static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, | |
152 | size_t len) | |
153 | { | |
154 | if (!capable(CAP_SYS_ADMIN)) | |
155 | return -EACCES; | |
156 | ||
157 | if (simple_strtol(buf, NULL, 0) != 1) | |
158 | return -EINVAL; | |
159 | ||
160 | gfs2_statfs_sync(sdp); | |
161 | return len; | |
162 | } | |
163 | ||
b3b94faa DT |
164 | static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, |
165 | size_t len) | |
166 | { | |
167 | if (!capable(CAP_SYS_ADMIN)) | |
168 | return -EACCES; | |
169 | ||
170 | if (simple_strtol(buf, NULL, 0) != 1) | |
171 | return -EINVAL; | |
172 | ||
173 | gfs2_quota_sync(sdp); | |
174 | return len; | |
175 | } | |
176 | ||
177 | static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf, | |
178 | size_t len) | |
179 | { | |
cd915493 | 180 | u32 id; |
b3b94faa DT |
181 | |
182 | if (!capable(CAP_SYS_ADMIN)) | |
183 | return -EACCES; | |
184 | ||
185 | id = simple_strtoul(buf, NULL, 0); | |
186 | ||
187 | gfs2_quota_refresh(sdp, 1, id); | |
188 | return len; | |
189 | } | |
190 | ||
191 | static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, | |
192 | size_t len) | |
193 | { | |
cd915493 | 194 | u32 id; |
b3b94faa DT |
195 | |
196 | if (!capable(CAP_SYS_ADMIN)) | |
197 | return -EACCES; | |
198 | ||
199 | id = simple_strtoul(buf, NULL, 0); | |
200 | ||
201 | gfs2_quota_refresh(sdp, 0, id); | |
202 | return len; | |
203 | } | |
204 | ||
64d576ba SW |
205 | static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
206 | { | |
207 | struct gfs2_glock *gl; | |
208 | const struct gfs2_glock_operations *glops; | |
209 | unsigned int glmode; | |
210 | unsigned int gltype; | |
211 | unsigned long long glnum; | |
212 | char mode[16]; | |
213 | int rv; | |
214 | ||
215 | if (!capable(CAP_SYS_ADMIN)) | |
216 | return -EACCES; | |
217 | ||
218 | rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum, | |
219 | mode); | |
220 | if (rv != 3) | |
221 | return -EINVAL; | |
222 | ||
223 | if (strcmp(mode, "EX") == 0) | |
224 | glmode = LM_ST_UNLOCKED; | |
225 | else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0)) | |
226 | glmode = LM_ST_DEFERRED; | |
227 | else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0)) | |
228 | glmode = LM_ST_SHARED; | |
229 | else | |
230 | return -EINVAL; | |
231 | ||
232 | if (gltype > LM_TYPE_JOURNAL) | |
233 | return -EINVAL; | |
234 | glops = gfs2_glops_list[gltype]; | |
235 | if (glops == NULL) | |
236 | return -EINVAL; | |
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 | ||
322 | static ssize_t lkid_show(struct gfs2_sbd *sdp, char *buf) | |
323 | { | |
324 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
325 | return sprintf(buf, "%u\n", ls->ls_id); | |
326 | } | |
327 | ||
328 | static ssize_t lkfirst_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); | |
332 | } | |
333 | ||
334 | static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf) | |
335 | { | |
336 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
337 | return sprintf(buf, "%d\n", ls->ls_first_done); | |
338 | } | |
339 | ||
fe64d517 | 340 | static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
f057f6cd | 341 | { |
fe64d517 | 342 | unsigned jid; |
f057f6cd | 343 | struct gfs2_jdesc *jd; |
fe64d517 SW |
344 | int rv; |
345 | ||
346 | rv = sscanf(buf, "%u", &jid); | |
347 | if (rv != 1) | |
348 | return -EINVAL; | |
f057f6cd | 349 | |
fe64d517 | 350 | rv = -ESHUTDOWN; |
f057f6cd | 351 | spin_lock(&sdp->sd_jindex_spin); |
fe64d517 SW |
352 | if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) |
353 | goto out; | |
354 | rv = -EBUSY; | |
355 | if (sdp->sd_jdesc->jd_jid == jid) | |
356 | goto out; | |
357 | rv = -ENOENT; | |
f057f6cd SW |
358 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { |
359 | if (jd->jd_jid != jid) | |
360 | continue; | |
fe64d517 | 361 | rv = slow_work_enqueue(&jd->jd_work); |
f057f6cd SW |
362 | break; |
363 | } | |
fe64d517 | 364 | out: |
f057f6cd | 365 | spin_unlock(&sdp->sd_jindex_spin); |
fe64d517 | 366 | return rv ? rv : len; |
f057f6cd SW |
367 | } |
368 | ||
369 | static ssize_t recover_done_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_done); | |
373 | } | |
374 | ||
375 | static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf) | |
376 | { | |
377 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
378 | return sprintf(buf, "%d\n", ls->ls_recover_jid_status); | |
379 | } | |
380 | ||
e1b28aab SW |
381 | static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf) |
382 | { | |
383 | return sprintf(buf, "%u\n", sdp->sd_lockstruct.ls_jid); | |
384 | } | |
385 | ||
f057f6cd | 386 | #define GDLM_ATTR(_name,_mode,_show,_store) \ |
48c2b613 | 387 | static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store) |
f057f6cd | 388 | |
fe64d517 SW |
389 | GDLM_ATTR(proto_name, 0444, proto_name_show, NULL); |
390 | GDLM_ATTR(block, 0644, block_show, block_store); | |
391 | GDLM_ATTR(withdraw, 0644, withdraw_show, withdraw_store); | |
392 | GDLM_ATTR(id, 0444, lkid_show, NULL); | |
e1b28aab | 393 | GDLM_ATTR(jid, 0444, jid_show, NULL); |
fe64d517 SW |
394 | GDLM_ATTR(first, 0444, lkfirst_show, NULL); |
395 | GDLM_ATTR(first_done, 0444, first_done_show, NULL); | |
396 | GDLM_ATTR(recover, 0200, NULL, recover_store); | |
397 | GDLM_ATTR(recover_done, 0444, recover_done_show, NULL); | |
398 | GDLM_ATTR(recover_status, 0444, recover_status_show, NULL); | |
f057f6cd SW |
399 | |
400 | static struct attribute *lock_module_attrs[] = { | |
401 | &gdlm_attr_proto_name.attr, | |
402 | &gdlm_attr_block.attr, | |
403 | &gdlm_attr_withdraw.attr, | |
404 | &gdlm_attr_id.attr, | |
e1b28aab | 405 | &gdlm_attr_jid.attr, |
f057f6cd SW |
406 | &gdlm_attr_first.attr, |
407 | &gdlm_attr_first_done.attr, | |
408 | &gdlm_attr_recover.attr, | |
409 | &gdlm_attr_recover_done.attr, | |
410 | &gdlm_attr_recover_status.attr, | |
ea67eedb | 411 | NULL, |
b3b94faa DT |
412 | }; |
413 | ||
b3b94faa DT |
414 | #define ARGS_ATTR(name, fmt) \ |
415 | static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ | |
416 | { \ | |
3204a6c0 | 417 | return snprintf(buf, PAGE_SIZE, fmt, sdp->sd_args.ar_##name); \ |
b3b94faa | 418 | } \ |
48c2b613 | 419 | static struct gfs2_attr args_attr_##name = __ATTR_RO(name) |
b3b94faa DT |
420 | |
421 | ARGS_ATTR(lockproto, "%s\n"); | |
422 | ARGS_ATTR(locktable, "%s\n"); | |
423 | ARGS_ATTR(hostdata, "%s\n"); | |
424 | ARGS_ATTR(spectator, "%d\n"); | |
425 | ARGS_ATTR(ignore_local_fs, "%d\n"); | |
426 | ARGS_ATTR(localcaching, "%d\n"); | |
427 | ARGS_ATTR(localflocks, "%d\n"); | |
428 | ARGS_ATTR(debug, "%d\n"); | |
429 | ARGS_ATTR(upgrade, "%d\n"); | |
b3b94faa DT |
430 | ARGS_ATTR(posix_acl, "%d\n"); |
431 | ARGS_ATTR(quota, "%u\n"); | |
432 | ARGS_ATTR(suiddir, "%d\n"); | |
433 | ARGS_ATTR(data, "%d\n"); | |
434 | ||
b3b94faa DT |
435 | static struct attribute *args_attrs[] = { |
436 | &args_attr_lockproto.attr, | |
437 | &args_attr_locktable.attr, | |
438 | &args_attr_hostdata.attr, | |
439 | &args_attr_spectator.attr, | |
440 | &args_attr_ignore_local_fs.attr, | |
441 | &args_attr_localcaching.attr, | |
442 | &args_attr_localflocks.attr, | |
443 | &args_attr_debug.attr, | |
444 | &args_attr_upgrade.attr, | |
b3b94faa DT |
445 | &args_attr_posix_acl.attr, |
446 | &args_attr_quota.attr, | |
447 | &args_attr_suiddir.attr, | |
448 | &args_attr_data.attr, | |
ea67eedb | 449 | NULL, |
b3b94faa DT |
450 | }; |
451 | ||
b3b94faa DT |
452 | /* |
453 | * get and set struct gfs2_tune fields | |
454 | */ | |
455 | ||
456 | static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) | |
457 | { | |
3204a6c0 DT |
458 | return snprintf(buf, PAGE_SIZE, "%u %u\n", |
459 | sdp->sd_tune.gt_quota_scale_num, | |
460 | sdp->sd_tune.gt_quota_scale_den); | |
b3b94faa DT |
461 | } |
462 | ||
463 | static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, | |
464 | size_t len) | |
465 | { | |
466 | struct gfs2_tune *gt = &sdp->sd_tune; | |
467 | unsigned int x, y; | |
468 | ||
469 | if (!capable(CAP_SYS_ADMIN)) | |
470 | return -EACCES; | |
471 | ||
472 | if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) | |
473 | return -EINVAL; | |
474 | ||
475 | spin_lock(>->gt_spin); | |
476 | gt->gt_quota_scale_num = x; | |
477 | gt->gt_quota_scale_den = y; | |
478 | spin_unlock(>->gt_spin); | |
479 | return len; | |
480 | } | |
481 | ||
482 | static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, | |
483 | int check_zero, const char *buf, size_t len) | |
484 | { | |
485 | struct gfs2_tune *gt = &sdp->sd_tune; | |
486 | unsigned int x; | |
487 | ||
488 | if (!capable(CAP_SYS_ADMIN)) | |
489 | return -EACCES; | |
490 | ||
491 | x = simple_strtoul(buf, NULL, 0); | |
492 | ||
493 | if (check_zero && !x) | |
494 | return -EINVAL; | |
495 | ||
496 | spin_lock(>->gt_spin); | |
497 | *field = x; | |
498 | spin_unlock(>->gt_spin); | |
499 | return len; | |
500 | } | |
501 | ||
b3b94faa | 502 | #define TUNE_ATTR_3(name, show, store) \ |
48c2b613 | 503 | static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store) |
b3b94faa DT |
504 | |
505 | #define TUNE_ATTR_2(name, store) \ | |
506 | static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ | |
507 | { \ | |
3204a6c0 | 508 | return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \ |
b3b94faa DT |
509 | } \ |
510 | TUNE_ATTR_3(name, name##_show, store) | |
511 | ||
512 | #define TUNE_ATTR(name, check_zero) \ | |
513 | static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ | |
514 | { \ | |
515 | return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ | |
516 | } \ | |
517 | TUNE_ATTR_2(name, name##_store) | |
518 | ||
b3b94faa DT |
519 | TUNE_ATTR(incore_log_blocks, 0); |
520 | TUNE_ATTR(log_flush_secs, 0); | |
b3b94faa DT |
521 | TUNE_ATTR(quota_warn_period, 0); |
522 | TUNE_ATTR(quota_quantum, 0); | |
b3b94faa DT |
523 | TUNE_ATTR(max_readahead, 0); |
524 | TUNE_ATTR(complain_secs, 0); | |
b3b94faa DT |
525 | TUNE_ATTR(statfs_slow, 0); |
526 | TUNE_ATTR(new_files_jdata, 0); | |
b3b94faa | 527 | TUNE_ATTR(quota_simul_sync, 1); |
b3b94faa | 528 | TUNE_ATTR(stall_secs, 1); |
b3b94faa | 529 | TUNE_ATTR(statfs_quantum, 1); |
b3b94faa DT |
530 | TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); |
531 | ||
532 | static struct attribute *tune_attrs[] = { | |
b3b94faa DT |
533 | &tune_attr_incore_log_blocks.attr, |
534 | &tune_attr_log_flush_secs.attr, | |
b3b94faa DT |
535 | &tune_attr_quota_warn_period.attr, |
536 | &tune_attr_quota_quantum.attr, | |
b3b94faa DT |
537 | &tune_attr_max_readahead.attr, |
538 | &tune_attr_complain_secs.attr, | |
b3b94faa DT |
539 | &tune_attr_statfs_slow.attr, |
540 | &tune_attr_quota_simul_sync.attr, | |
b3b94faa | 541 | &tune_attr_stall_secs.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 args_group = { |
549 | .name = "args", | |
ea67eedb | 550 | .attrs = args_attrs, |
b3b94faa DT |
551 | }; |
552 | ||
553 | static struct attribute_group tune_group = { | |
554 | .name = "tune", | |
ea67eedb | 555 | .attrs = tune_attrs, |
b3b94faa DT |
556 | }; |
557 | ||
f057f6cd SW |
558 | static struct attribute_group lock_module_group = { |
559 | .name = "lock_module", | |
560 | .attrs = lock_module_attrs, | |
561 | }; | |
562 | ||
b3b94faa DT |
563 | int gfs2_sys_fs_add(struct gfs2_sbd *sdp) |
564 | { | |
565 | int error; | |
566 | ||
9bec101a | 567 | sdp->sd_kobj.kset = gfs2_kset; |
901195ed GKH |
568 | error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL, |
569 | "%s", sdp->sd_table_name); | |
b3b94faa DT |
570 | if (error) |
571 | goto fail; | |
572 | ||
b3b94faa DT |
573 | error = sysfs_create_group(&sdp->sd_kobj, &args_group); |
574 | if (error) | |
e1b28aab | 575 | goto fail_reg; |
b3b94faa DT |
576 | |
577 | error = sysfs_create_group(&sdp->sd_kobj, &tune_group); | |
578 | if (error) | |
579 | goto fail_args; | |
580 | ||
f057f6cd SW |
581 | error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group); |
582 | if (error) | |
583 | goto fail_tune; | |
584 | ||
901195ed | 585 | kobject_uevent(&sdp->sd_kobj, KOBJ_ADD); |
b3b94faa DT |
586 | return 0; |
587 | ||
f057f6cd SW |
588 | fail_tune: |
589 | sysfs_remove_group(&sdp->sd_kobj, &tune_group); | |
a91ea69f | 590 | fail_args: |
b3b94faa | 591 | sysfs_remove_group(&sdp->sd_kobj, &args_group); |
a91ea69f | 592 | fail_reg: |
197b12d6 | 593 | kobject_put(&sdp->sd_kobj); |
a91ea69f | 594 | fail: |
65952fb4 | 595 | fs_err(sdp, "error %d adding sysfs files", error); |
b3b94faa DT |
596 | return error; |
597 | } | |
598 | ||
599 | void gfs2_sys_fs_del(struct gfs2_sbd *sdp) | |
600 | { | |
601 | sysfs_remove_group(&sdp->sd_kobj, &tune_group); | |
602 | sysfs_remove_group(&sdp->sd_kobj, &args_group); | |
f057f6cd | 603 | sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); |
197b12d6 | 604 | kobject_put(&sdp->sd_kobj); |
b3b94faa DT |
605 | } |
606 | ||
02e3cc70 | 607 | |
fdd1062e SW |
608 | static int gfs2_uevent(struct kset *kset, struct kobject *kobj, |
609 | struct kobj_uevent_env *env) | |
610 | { | |
611 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); | |
02e3cc70 SW |
612 | const u8 *uuid = sdp->sd_sb.sb_uuid; |
613 | ||
fdd1062e SW |
614 | add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name); |
615 | add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name); | |
02e3cc70 SW |
616 | if (gfs2_uuid_valid(uuid)) { |
617 | add_uevent_var(env, "UUID=%02X%02X%02X%02X-%02X%02X-%02X%02X-" | |
618 | "%02X%02X-%02X%02X%02X%02X%02X%02X", | |
619 | uuid[0], uuid[1], uuid[2], uuid[3], uuid[4], | |
620 | uuid[5], uuid[6], uuid[7], uuid[8], uuid[9], | |
621 | uuid[10], uuid[11], uuid[12], uuid[13], | |
622 | uuid[14], uuid[15]); | |
623 | } | |
fdd1062e SW |
624 | return 0; |
625 | } | |
626 | ||
627 | static struct kset_uevent_ops gfs2_uevent_ops = { | |
628 | .uevent = gfs2_uevent, | |
629 | }; | |
630 | ||
631 | ||
b3b94faa DT |
632 | int gfs2_sys_init(void) |
633 | { | |
fdd1062e | 634 | gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj); |
9bec101a GKH |
635 | if (!gfs2_kset) |
636 | return -ENOMEM; | |
637 | return 0; | |
b3b94faa DT |
638 | } |
639 | ||
640 | void gfs2_sys_uninit(void) | |
641 | { | |
9bec101a | 642 | kset_unregister(gfs2_kset); |
b3b94faa DT |
643 | } |
644 |