]>
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 | ||
d77d1b58 JP |
10 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
11 | ||
b3b94faa | 12 | #include <linux/sched.h> |
b3b94faa DT |
13 | #include <linux/spinlock.h> |
14 | #include <linux/completion.h> | |
15 | #include <linux/buffer_head.h> | |
16 | #include <linux/module.h> | |
17 | #include <linux/kobject.h> | |
b3b94faa | 18 | #include <asm/uaccess.h> |
f057f6cd | 19 | #include <linux/gfs2_ondisk.h> |
31e54b01 | 20 | #include <linux/genhd.h> |
b3b94faa DT |
21 | |
22 | #include "gfs2.h" | |
5c676f6d | 23 | #include "incore.h" |
b3b94faa DT |
24 | #include "sys.h" |
25 | #include "super.h" | |
26 | #include "glock.h" | |
27 | #include "quota.h" | |
5c676f6d | 28 | #include "util.h" |
64d576ba | 29 | #include "glops.h" |
6ecd7c2d | 30 | #include "recovery.h" |
b3b94faa | 31 | |
48c2b613 SW |
32 | struct gfs2_attr { |
33 | struct attribute attr; | |
34 | ssize_t (*show)(struct gfs2_sbd *, char *); | |
35 | ssize_t (*store)(struct gfs2_sbd *, const char *, size_t); | |
36 | }; | |
37 | ||
38 | static ssize_t gfs2_attr_show(struct kobject *kobj, struct attribute *attr, | |
39 | char *buf) | |
40 | { | |
41 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); | |
42 | struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); | |
43 | return a->show ? a->show(sdp, buf) : 0; | |
44 | } | |
45 | ||
46 | static ssize_t gfs2_attr_store(struct kobject *kobj, struct attribute *attr, | |
47 | const char *buf, size_t len) | |
48 | { | |
49 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); | |
50 | struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); | |
51 | return a->store ? a->store(sdp, buf, len) : len; | |
52 | } | |
53 | ||
52cf25d0 | 54 | static const struct sysfs_ops gfs2_attr_ops = { |
48c2b613 SW |
55 | .show = gfs2_attr_show, |
56 | .store = gfs2_attr_store, | |
57 | }; | |
58 | ||
59 | ||
60 | static struct kset *gfs2_kset; | |
61 | ||
b3b94faa DT |
62 | static ssize_t id_show(struct gfs2_sbd *sdp, char *buf) |
63 | { | |
c7227e46 BP |
64 | return snprintf(buf, PAGE_SIZE, "%u:%u\n", |
65 | MAJOR(sdp->sd_vfs->s_dev), MINOR(sdp->sd_vfs->s_dev)); | |
b3b94faa DT |
66 | } |
67 | ||
68 | static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf) | |
69 | { | |
3204a6c0 | 70 | return snprintf(buf, PAGE_SIZE, "%s\n", sdp->sd_fsname); |
b3b94faa DT |
71 | } |
72 | ||
02e3cc70 SW |
73 | static int gfs2_uuid_valid(const u8 *uuid) |
74 | { | |
75 | int i; | |
76 | ||
77 | for (i = 0; i < 16; i++) { | |
78 | if (uuid[i]) | |
79 | return 1; | |
80 | } | |
81 | return 0; | |
82 | } | |
83 | ||
84 | static ssize_t uuid_show(struct gfs2_sbd *sdp, char *buf) | |
85 | { | |
32e471ef SW |
86 | struct super_block *s = sdp->sd_vfs; |
87 | const u8 *uuid = s->s_uuid; | |
02e3cc70 SW |
88 | buf[0] = '\0'; |
89 | if (!gfs2_uuid_valid(uuid)) | |
90 | return 0; | |
f0b34ae6 | 91 | return snprintf(buf, PAGE_SIZE, "%pUB\n", uuid); |
02e3cc70 SW |
92 | } |
93 | ||
b3b94faa DT |
94 | static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) |
95 | { | |
d564053f SW |
96 | struct super_block *sb = sdp->sd_vfs; |
97 | int frozen = (sb->s_writers.frozen == SB_UNFROZEN) ? 0 : 1; | |
b3b94faa | 98 | |
d564053f | 99 | return snprintf(buf, PAGE_SIZE, "%u\n", frozen); |
b3b94faa DT |
100 | } |
101 | ||
102 | static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
103 | { | |
d564053f | 104 | int error; |
b3b94faa DT |
105 | int n = simple_strtol(buf, NULL, 0); |
106 | ||
107 | if (!capable(CAP_SYS_ADMIN)) | |
41735818 | 108 | return -EPERM; |
b3b94faa DT |
109 | |
110 | switch (n) { | |
111 | case 0: | |
d564053f | 112 | error = thaw_super(sdp->sd_vfs); |
b3b94faa DT |
113 | break; |
114 | case 1: | |
d564053f | 115 | error = freeze_super(sdp->sd_vfs); |
b3b94faa DT |
116 | break; |
117 | default: | |
d564053f | 118 | return -EINVAL; |
b3b94faa DT |
119 | } |
120 | ||
d564053f | 121 | if (error) { |
b3b94faa | 122 | fs_warn(sdp, "freeze %d error %d", n, error); |
d564053f SW |
123 | return error; |
124 | } | |
b3b94faa | 125 | |
d564053f | 126 | return len; |
b3b94faa DT |
127 | } |
128 | ||
129 | static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf) | |
130 | { | |
131 | unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags); | |
3204a6c0 | 132 | return snprintf(buf, PAGE_SIZE, "%u\n", b); |
b3b94faa DT |
133 | } |
134 | ||
135 | static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
136 | { | |
137 | if (!capable(CAP_SYS_ADMIN)) | |
41735818 | 138 | return -EPERM; |
b3b94faa DT |
139 | |
140 | if (simple_strtol(buf, NULL, 0) != 1) | |
141 | return -EINVAL; | |
142 | ||
143 | gfs2_lm_withdraw(sdp, | |
144 | "GFS2: fsid=%s: withdrawing from cluster at user's request\n", | |
145 | sdp->sd_fsname); | |
146 | return len; | |
147 | } | |
148 | ||
149 | static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, | |
150 | size_t len) | |
151 | { | |
152 | if (!capable(CAP_SYS_ADMIN)) | |
41735818 | 153 | return -EPERM; |
b3b94faa DT |
154 | |
155 | if (simple_strtol(buf, NULL, 0) != 1) | |
156 | return -EINVAL; | |
157 | ||
8c42d637 | 158 | gfs2_statfs_sync(sdp->sd_vfs, 0); |
b3b94faa DT |
159 | return len; |
160 | } | |
161 | ||
b3b94faa DT |
162 | static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, |
163 | size_t len) | |
164 | { | |
165 | if (!capable(CAP_SYS_ADMIN)) | |
41735818 | 166 | return -EPERM; |
b3b94faa DT |
167 | |
168 | if (simple_strtol(buf, NULL, 0) != 1) | |
169 | return -EINVAL; | |
170 | ||
ceed1723 | 171 | gfs2_quota_sync(sdp->sd_vfs, 0); |
b3b94faa DT |
172 | return len; |
173 | } | |
174 | ||
175 | static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf, | |
176 | size_t len) | |
177 | { | |
ed87dabc | 178 | struct kqid qid; |
ea762338 | 179 | int error; |
cd915493 | 180 | u32 id; |
b3b94faa DT |
181 | |
182 | if (!capable(CAP_SYS_ADMIN)) | |
41735818 | 183 | return -EPERM; |
b3b94faa DT |
184 | |
185 | id = simple_strtoul(buf, NULL, 0); | |
186 | ||
ed87dabc EB |
187 | qid = make_kqid(current_user_ns(), USRQUOTA, id); |
188 | if (!qid_valid(qid)) | |
189 | return -EINVAL; | |
190 | ||
191 | error = gfs2_quota_refresh(sdp, qid); | |
ea762338 | 192 | return error ? error : len; |
b3b94faa DT |
193 | } |
194 | ||
195 | static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, | |
196 | size_t len) | |
197 | { | |
ed87dabc | 198 | struct kqid qid; |
ea762338 | 199 | int error; |
cd915493 | 200 | u32 id; |
b3b94faa DT |
201 | |
202 | if (!capable(CAP_SYS_ADMIN)) | |
41735818 | 203 | return -EPERM; |
b3b94faa DT |
204 | |
205 | id = simple_strtoul(buf, NULL, 0); | |
206 | ||
ed87dabc EB |
207 | qid = make_kqid(current_user_ns(), GRPQUOTA, id); |
208 | if (!qid_valid(qid)) | |
209 | return -EINVAL; | |
210 | ||
211 | error = gfs2_quota_refresh(sdp, qid); | |
ea762338 | 212 | return error ? error : len; |
b3b94faa DT |
213 | } |
214 | ||
64d576ba SW |
215 | static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
216 | { | |
217 | struct gfs2_glock *gl; | |
218 | const struct gfs2_glock_operations *glops; | |
219 | unsigned int glmode; | |
220 | unsigned int gltype; | |
221 | unsigned long long glnum; | |
222 | char mode[16]; | |
223 | int rv; | |
224 | ||
225 | if (!capable(CAP_SYS_ADMIN)) | |
41735818 | 226 | return -EPERM; |
64d576ba SW |
227 | |
228 | rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum, | |
229 | mode); | |
230 | if (rv != 3) | |
231 | return -EINVAL; | |
232 | ||
233 | if (strcmp(mode, "EX") == 0) | |
234 | glmode = LM_ST_UNLOCKED; | |
235 | else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0)) | |
236 | glmode = LM_ST_DEFERRED; | |
237 | else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0)) | |
238 | glmode = LM_ST_SHARED; | |
239 | else | |
240 | return -EINVAL; | |
241 | ||
242 | if (gltype > LM_TYPE_JOURNAL) | |
243 | return -EINVAL; | |
13466985 SW |
244 | if (gltype == LM_TYPE_NONDISK && glnum == GFS2_TRANS_LOCK) |
245 | glops = &gfs2_trans_glops; | |
246 | else | |
247 | glops = gfs2_glops_list[gltype]; | |
64d576ba SW |
248 | if (glops == NULL) |
249 | return -EINVAL; | |
6a99be5d | 250 | if (!test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags)) |
913a71d2 | 251 | fs_info(sdp, "demote interface used\n"); |
64d576ba SW |
252 | rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl); |
253 | if (rv) | |
254 | return rv; | |
255 | gfs2_glock_cb(gl, glmode); | |
256 | gfs2_glock_put(gl); | |
257 | return len; | |
258 | } | |
259 | ||
b3b94faa DT |
260 | |
261 | #define GFS2_ATTR(name, mode, show, store) \ | |
262 | static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store) | |
263 | ||
264 | GFS2_ATTR(id, 0444, id_show, NULL); | |
265 | GFS2_ATTR(fsname, 0444, fsname_show, NULL); | |
02e3cc70 | 266 | GFS2_ATTR(uuid, 0444, uuid_show, NULL); |
b3b94faa | 267 | GFS2_ATTR(freeze, 0644, freeze_show, freeze_store); |
b3b94faa DT |
268 | GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store); |
269 | GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store); | |
270 | GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store); | |
271 | GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store); | |
272 | GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store); | |
64d576ba | 273 | GFS2_ATTR(demote_rq, 0200, NULL, demote_rq_store); |
b3b94faa DT |
274 | |
275 | static struct attribute *gfs2_attrs[] = { | |
276 | &gfs2_attr_id.attr, | |
277 | &gfs2_attr_fsname.attr, | |
02e3cc70 | 278 | &gfs2_attr_uuid.attr, |
b3b94faa | 279 | &gfs2_attr_freeze.attr, |
b3b94faa DT |
280 | &gfs2_attr_withdraw.attr, |
281 | &gfs2_attr_statfs_sync.attr, | |
282 | &gfs2_attr_quota_sync.attr, | |
283 | &gfs2_attr_quota_refresh_user.attr, | |
284 | &gfs2_attr_quota_refresh_group.attr, | |
64d576ba | 285 | &gfs2_attr_demote_rq.attr, |
b3b94faa DT |
286 | NULL, |
287 | }; | |
288 | ||
0d515210 BP |
289 | static void gfs2_sbd_release(struct kobject *kobj) |
290 | { | |
291 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); | |
292 | ||
293 | kfree(sdp); | |
294 | } | |
295 | ||
b3b94faa | 296 | static struct kobj_type gfs2_ktype = { |
0d515210 | 297 | .release = gfs2_sbd_release, |
b3b94faa DT |
298 | .default_attrs = gfs2_attrs, |
299 | .sysfs_ops = &gfs2_attr_ops, | |
300 | }; | |
301 | ||
f057f6cd SW |
302 | |
303 | /* | |
304 | * lock_module. Originally from lock_dlm | |
305 | */ | |
306 | ||
307 | static ssize_t proto_name_show(struct gfs2_sbd *sdp, char *buf) | |
308 | { | |
309 | const struct lm_lockops *ops = sdp->sd_lockstruct.ls_ops; | |
310 | return sprintf(buf, "%s\n", ops->lm_proto_name); | |
311 | } | |
312 | ||
313 | static ssize_t block_show(struct gfs2_sbd *sdp, char *buf) | |
314 | { | |
315 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
316 | ssize_t ret; | |
317 | int val = 0; | |
318 | ||
e0c2a9aa | 319 | if (test_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags)) |
f057f6cd SW |
320 | val = 1; |
321 | ret = sprintf(buf, "%d\n", val); | |
322 | return ret; | |
323 | } | |
324 | ||
325 | static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
326 | { | |
327 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
328 | ssize_t ret = len; | |
329 | int val; | |
330 | ||
331 | val = simple_strtol(buf, NULL, 0); | |
332 | ||
333 | if (val == 1) | |
e0c2a9aa | 334 | set_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags); |
f057f6cd | 335 | else if (val == 0) { |
e0c2a9aa | 336 | clear_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags); |
f057f6cd SW |
337 | smp_mb__after_clear_bit(); |
338 | gfs2_glock_thaw(sdp); | |
339 | } else { | |
340 | ret = -EINVAL; | |
341 | } | |
342 | return ret; | |
343 | } | |
344 | ||
fd95e81c SW |
345 | static ssize_t wdack_show(struct gfs2_sbd *sdp, char *buf) |
346 | { | |
347 | int val = completion_done(&sdp->sd_wdack) ? 1 : 0; | |
348 | ||
349 | return sprintf(buf, "%d\n", val); | |
350 | } | |
351 | ||
352 | static ssize_t wdack_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
353 | { | |
354 | ssize_t ret = len; | |
355 | int val; | |
356 | ||
357 | val = simple_strtol(buf, NULL, 0); | |
358 | ||
359 | if ((val == 1) && | |
360 | !strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm")) | |
361 | complete(&sdp->sd_wdack); | |
362 | else | |
363 | ret = -EINVAL; | |
364 | return ret; | |
365 | } | |
366 | ||
f057f6cd SW |
367 | static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf) |
368 | { | |
369 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
370 | return sprintf(buf, "%d\n", ls->ls_first); | |
371 | } | |
372 | ||
ba6e9364 SW |
373 | static ssize_t lkfirst_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
374 | { | |
375 | unsigned first; | |
376 | int rv; | |
377 | ||
378 | rv = sscanf(buf, "%u", &first); | |
379 | if (rv != 1 || first > 1) | |
380 | return -EINVAL; | |
3942ae53 SW |
381 | rv = wait_for_completion_killable(&sdp->sd_locking_init); |
382 | if (rv) | |
383 | return rv; | |
ba6e9364 SW |
384 | spin_lock(&sdp->sd_jindex_spin); |
385 | rv = -EBUSY; | |
386 | if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) | |
387 | goto out; | |
388 | rv = -EINVAL; | |
389 | if (sdp->sd_args.ar_spectator) | |
390 | goto out; | |
391 | if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) | |
392 | goto out; | |
e0c2a9aa DT |
393 | sdp->sd_lockstruct.ls_first = first; |
394 | rv = 0; | |
ba6e9364 SW |
395 | out: |
396 | spin_unlock(&sdp->sd_jindex_spin); | |
397 | return rv ? rv : len; | |
398 | } | |
399 | ||
f057f6cd SW |
400 | static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf) |
401 | { | |
402 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
e0c2a9aa | 403 | return sprintf(buf, "%d\n", !!test_bit(DFL_FIRST_MOUNT_DONE, &ls->ls_recover_flags)); |
f057f6cd SW |
404 | } |
405 | ||
e0c2a9aa | 406 | int gfs2_recover_set(struct gfs2_sbd *sdp, unsigned jid) |
f057f6cd SW |
407 | { |
408 | struct gfs2_jdesc *jd; | |
fe64d517 SW |
409 | int rv; |
410 | ||
f057f6cd | 411 | spin_lock(&sdp->sd_jindex_spin); |
fe64d517 SW |
412 | rv = -EBUSY; |
413 | if (sdp->sd_jdesc->jd_jid == jid) | |
414 | goto out; | |
415 | rv = -ENOENT; | |
f057f6cd SW |
416 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { |
417 | if (jd->jd_jid != jid) | |
418 | continue; | |
6ecd7c2d | 419 | rv = gfs2_recover_journal(jd, false); |
f057f6cd SW |
420 | break; |
421 | } | |
fe64d517 | 422 | out: |
f057f6cd | 423 | spin_unlock(&sdp->sd_jindex_spin); |
e0c2a9aa DT |
424 | return rv; |
425 | } | |
426 | ||
427 | static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
428 | { | |
429 | unsigned jid; | |
430 | int rv; | |
431 | ||
432 | rv = sscanf(buf, "%u", &jid); | |
433 | if (rv != 1) | |
434 | return -EINVAL; | |
435 | ||
1a058f52 DT |
436 | if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) { |
437 | rv = -ESHUTDOWN; | |
438 | goto out; | |
439 | } | |
e0c2a9aa | 440 | |
1a058f52 DT |
441 | rv = gfs2_recover_set(sdp, jid); |
442 | out: | |
fe64d517 | 443 | return rv ? rv : len; |
f057f6cd SW |
444 | } |
445 | ||
446 | static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf) | |
447 | { | |
448 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
449 | return sprintf(buf, "%d\n", ls->ls_recover_jid_done); | |
450 | } | |
451 | ||
452 | static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf) | |
453 | { | |
454 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
455 | return sprintf(buf, "%d\n", ls->ls_recover_jid_status); | |
456 | } | |
457 | ||
e1b28aab SW |
458 | static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf) |
459 | { | |
feb47ca9 | 460 | return sprintf(buf, "%d\n", sdp->sd_lockstruct.ls_jid); |
e1b28aab SW |
461 | } |
462 | ||
ba6e9364 SW |
463 | static ssize_t jid_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
464 | { | |
feb47ca9 | 465 | int jid; |
ba6e9364 SW |
466 | int rv; |
467 | ||
feb47ca9 | 468 | rv = sscanf(buf, "%d", &jid); |
ba6e9364 SW |
469 | if (rv != 1) |
470 | return -EINVAL; | |
3942ae53 SW |
471 | rv = wait_for_completion_killable(&sdp->sd_locking_init); |
472 | if (rv) | |
473 | return rv; | |
ba6e9364 SW |
474 | spin_lock(&sdp->sd_jindex_spin); |
475 | rv = -EINVAL; | |
ba6e9364 SW |
476 | if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) |
477 | goto out; | |
478 | rv = -EBUSY; | |
feb47ca9 | 479 | if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) |
ba6e9364 | 480 | goto out; |
feb47ca9 SW |
481 | rv = 0; |
482 | if (sdp->sd_args.ar_spectator && jid > 0) | |
483 | rv = jid = -EINVAL; | |
ba6e9364 | 484 | sdp->sd_lockstruct.ls_jid = jid; |
feb47ca9 | 485 | clear_bit(SDF_NOJOURNALID, &sdp->sd_flags); |
ba6e9364 SW |
486 | smp_mb__after_clear_bit(); |
487 | wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID); | |
ba6e9364 SW |
488 | out: |
489 | spin_unlock(&sdp->sd_jindex_spin); | |
490 | return rv ? rv : len; | |
491 | } | |
492 | ||
f057f6cd | 493 | #define GDLM_ATTR(_name,_mode,_show,_store) \ |
48c2b613 | 494 | static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store) |
f057f6cd | 495 | |
d7e623da SW |
496 | GDLM_ATTR(proto_name, 0444, proto_name_show, NULL); |
497 | GDLM_ATTR(block, 0644, block_show, block_store); | |
fd95e81c | 498 | GDLM_ATTR(withdraw, 0644, wdack_show, wdack_store); |
ba6e9364 SW |
499 | GDLM_ATTR(jid, 0644, jid_show, jid_store); |
500 | GDLM_ATTR(first, 0644, lkfirst_show, lkfirst_store); | |
d7e623da SW |
501 | GDLM_ATTR(first_done, 0444, first_done_show, NULL); |
502 | GDLM_ATTR(recover, 0600, NULL, recover_store); | |
503 | GDLM_ATTR(recover_done, 0444, recover_done_show, NULL); | |
504 | GDLM_ATTR(recover_status, 0444, recover_status_show, NULL); | |
f057f6cd SW |
505 | |
506 | static struct attribute *lock_module_attrs[] = { | |
507 | &gdlm_attr_proto_name.attr, | |
508 | &gdlm_attr_block.attr, | |
509 | &gdlm_attr_withdraw.attr, | |
e1b28aab | 510 | &gdlm_attr_jid.attr, |
f057f6cd SW |
511 | &gdlm_attr_first.attr, |
512 | &gdlm_attr_first_done.attr, | |
513 | &gdlm_attr_recover.attr, | |
514 | &gdlm_attr_recover_done.attr, | |
515 | &gdlm_attr_recover_status.attr, | |
ea67eedb | 516 | NULL, |
b3b94faa DT |
517 | }; |
518 | ||
b3b94faa DT |
519 | /* |
520 | * get and set struct gfs2_tune fields | |
521 | */ | |
522 | ||
523 | static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) | |
524 | { | |
3204a6c0 DT |
525 | return snprintf(buf, PAGE_SIZE, "%u %u\n", |
526 | sdp->sd_tune.gt_quota_scale_num, | |
527 | sdp->sd_tune.gt_quota_scale_den); | |
b3b94faa DT |
528 | } |
529 | ||
530 | static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, | |
531 | size_t len) | |
532 | { | |
533 | struct gfs2_tune *gt = &sdp->sd_tune; | |
534 | unsigned int x, y; | |
535 | ||
536 | if (!capable(CAP_SYS_ADMIN)) | |
41735818 | 537 | return -EPERM; |
b3b94faa DT |
538 | |
539 | if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) | |
540 | return -EINVAL; | |
541 | ||
542 | spin_lock(>->gt_spin); | |
543 | gt->gt_quota_scale_num = x; | |
544 | gt->gt_quota_scale_den = y; | |
545 | spin_unlock(>->gt_spin); | |
546 | return len; | |
547 | } | |
548 | ||
549 | static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, | |
550 | int check_zero, const char *buf, size_t len) | |
551 | { | |
552 | struct gfs2_tune *gt = &sdp->sd_tune; | |
553 | unsigned int x; | |
554 | ||
555 | if (!capable(CAP_SYS_ADMIN)) | |
41735818 | 556 | return -EPERM; |
b3b94faa DT |
557 | |
558 | x = simple_strtoul(buf, NULL, 0); | |
559 | ||
560 | if (check_zero && !x) | |
561 | return -EINVAL; | |
562 | ||
563 | spin_lock(>->gt_spin); | |
564 | *field = x; | |
565 | spin_unlock(>->gt_spin); | |
566 | return len; | |
567 | } | |
568 | ||
b3b94faa | 569 | #define TUNE_ATTR_3(name, show, store) \ |
48c2b613 | 570 | static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store) |
b3b94faa DT |
571 | |
572 | #define TUNE_ATTR_2(name, store) \ | |
573 | static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ | |
574 | { \ | |
3204a6c0 | 575 | return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \ |
b3b94faa DT |
576 | } \ |
577 | TUNE_ATTR_3(name, name##_show, store) | |
578 | ||
579 | #define TUNE_ATTR(name, check_zero) \ | |
580 | static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ | |
581 | { \ | |
582 | return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ | |
583 | } \ | |
584 | TUNE_ATTR_2(name, name##_store) | |
585 | ||
b3b94faa DT |
586 | TUNE_ATTR(quota_warn_period, 0); |
587 | TUNE_ATTR(quota_quantum, 0); | |
b3b94faa DT |
588 | TUNE_ATTR(max_readahead, 0); |
589 | TUNE_ATTR(complain_secs, 0); | |
b3b94faa DT |
590 | TUNE_ATTR(statfs_slow, 0); |
591 | TUNE_ATTR(new_files_jdata, 0); | |
b3b94faa | 592 | TUNE_ATTR(statfs_quantum, 1); |
b3b94faa DT |
593 | TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); |
594 | ||
595 | static struct attribute *tune_attrs[] = { | |
b3b94faa DT |
596 | &tune_attr_quota_warn_period.attr, |
597 | &tune_attr_quota_quantum.attr, | |
b3b94faa DT |
598 | &tune_attr_max_readahead.attr, |
599 | &tune_attr_complain_secs.attr, | |
b3b94faa | 600 | &tune_attr_statfs_slow.attr, |
b3b94faa | 601 | &tune_attr_statfs_quantum.attr, |
b3b94faa DT |
602 | &tune_attr_quota_scale.attr, |
603 | &tune_attr_new_files_jdata.attr, | |
ea67eedb | 604 | NULL, |
b3b94faa DT |
605 | }; |
606 | ||
b3b94faa DT |
607 | static struct attribute_group tune_group = { |
608 | .name = "tune", | |
ea67eedb | 609 | .attrs = tune_attrs, |
b3b94faa DT |
610 | }; |
611 | ||
f057f6cd SW |
612 | static struct attribute_group lock_module_group = { |
613 | .name = "lock_module", | |
614 | .attrs = lock_module_attrs, | |
615 | }; | |
616 | ||
b3b94faa DT |
617 | int gfs2_sys_fs_add(struct gfs2_sbd *sdp) |
618 | { | |
440d6da2 | 619 | struct super_block *sb = sdp->sd_vfs; |
b3b94faa | 620 | int error; |
440d6da2 SW |
621 | char ro[20]; |
622 | char spectator[20]; | |
623 | char *envp[] = { ro, spectator, NULL }; | |
0d515210 | 624 | int sysfs_frees_sdp = 0; |
440d6da2 SW |
625 | |
626 | sprintf(ro, "RDONLY=%d", (sb->s_flags & MS_RDONLY) ? 1 : 0); | |
627 | sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); | |
b3b94faa | 628 | |
9bec101a | 629 | sdp->sd_kobj.kset = gfs2_kset; |
901195ed GKH |
630 | error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL, |
631 | "%s", sdp->sd_table_name); | |
b3b94faa | 632 | if (error) |
0d515210 | 633 | goto fail_reg; |
b3b94faa | 634 | |
0d515210 BP |
635 | sysfs_frees_sdp = 1; /* Freeing sdp is now done by sysfs calling |
636 | function gfs2_sbd_release. */ | |
b3b94faa DT |
637 | error = sysfs_create_group(&sdp->sd_kobj, &tune_group); |
638 | if (error) | |
f6eb5349 | 639 | goto fail_reg; |
b3b94faa | 640 | |
f057f6cd SW |
641 | error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group); |
642 | if (error) | |
643 | goto fail_tune; | |
644 | ||
31e54b01 SW |
645 | error = sysfs_create_link(&sdp->sd_kobj, |
646 | &disk_to_dev(sb->s_bdev->bd_disk)->kobj, | |
647 | "device"); | |
648 | if (error) | |
649 | goto fail_lock_module; | |
650 | ||
440d6da2 | 651 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_ADD, envp); |
b3b94faa DT |
652 | return 0; |
653 | ||
31e54b01 SW |
654 | fail_lock_module: |
655 | sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); | |
f057f6cd SW |
656 | fail_tune: |
657 | sysfs_remove_group(&sdp->sd_kobj, &tune_group); | |
a91ea69f | 658 | fail_reg: |
0d515210 | 659 | free_percpu(sdp->sd_lkstats); |
65952fb4 | 660 | fs_err(sdp, "error %d adding sysfs files", error); |
0d515210 BP |
661 | if (sysfs_frees_sdp) |
662 | kobject_put(&sdp->sd_kobj); | |
663 | else | |
664 | kfree(sdp); | |
665 | sb->s_fs_info = NULL; | |
b3b94faa DT |
666 | return error; |
667 | } | |
668 | ||
669 | void gfs2_sys_fs_del(struct gfs2_sbd *sdp) | |
670 | { | |
31e54b01 | 671 | sysfs_remove_link(&sdp->sd_kobj, "device"); |
b3b94faa | 672 | sysfs_remove_group(&sdp->sd_kobj, &tune_group); |
f057f6cd | 673 | sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); |
197b12d6 | 674 | kobject_put(&sdp->sd_kobj); |
b3b94faa DT |
675 | } |
676 | ||
fdd1062e SW |
677 | static int gfs2_uevent(struct kset *kset, struct kobject *kobj, |
678 | struct kobj_uevent_env *env) | |
679 | { | |
680 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); | |
32e471ef SW |
681 | struct super_block *s = sdp->sd_vfs; |
682 | const u8 *uuid = s->s_uuid; | |
02e3cc70 | 683 | |
fdd1062e SW |
684 | add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name); |
685 | add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name); | |
ba6e9364 | 686 | if (!test_bit(SDF_NOJOURNALID, &sdp->sd_flags)) |
feb47ca9 | 687 | add_uevent_var(env, "JOURNALID=%d", sdp->sd_lockstruct.ls_jid); |
f0b34ae6 JP |
688 | if (gfs2_uuid_valid(uuid)) |
689 | add_uevent_var(env, "UUID=%pUB", uuid); | |
fdd1062e SW |
690 | return 0; |
691 | } | |
692 | ||
9cd43611 | 693 | static const struct kset_uevent_ops gfs2_uevent_ops = { |
fdd1062e SW |
694 | .uevent = gfs2_uevent, |
695 | }; | |
696 | ||
b3b94faa DT |
697 | int gfs2_sys_init(void) |
698 | { | |
fdd1062e | 699 | gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj); |
9bec101a GKH |
700 | if (!gfs2_kset) |
701 | return -ENOMEM; | |
702 | return 0; | |
b3b94faa DT |
703 | } |
704 | ||
705 | void gfs2_sys_uninit(void) | |
706 | { | |
9bec101a | 707 | kset_unregister(gfs2_kset); |
b3b94faa DT |
708 | } |
709 |