Commit | Line | Data |
---|---|---|
b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3a8a9a10 | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
4 | * |
5 | * This copyrighted material is made available to anyone wishing to use, | |
6 | * modify, copy, or redistribute it subject to the terms and conditions | |
e9fc2aa0 | 7 | * of the GNU General Public License version 2. |
b3b94faa DT |
8 | */ |
9 | ||
10 | #include <linux/sched.h> | |
b3b94faa DT |
11 | #include <linux/spinlock.h> |
12 | #include <linux/completion.h> | |
13 | #include <linux/buffer_head.h> | |
14 | #include <linux/module.h> | |
15 | #include <linux/kobject.h> | |
b3b94faa | 16 | #include <asm/uaccess.h> |
f057f6cd | 17 | #include <linux/gfs2_ondisk.h> |
31e54b01 | 18 | #include <linux/genhd.h> |
b3b94faa DT |
19 | |
20 | #include "gfs2.h" | |
5c676f6d | 21 | #include "incore.h" |
b3b94faa DT |
22 | #include "sys.h" |
23 | #include "super.h" | |
24 | #include "glock.h" | |
25 | #include "quota.h" | |
5c676f6d | 26 | #include "util.h" |
64d576ba | 27 | #include "glops.h" |
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 | { | |
32e471ef SW |
84 | struct super_block *s = sdp->sd_vfs; |
85 | const u8 *uuid = s->s_uuid; | |
02e3cc70 SW |
86 | buf[0] = '\0'; |
87 | if (!gfs2_uuid_valid(uuid)) | |
88 | return 0; | |
f0b34ae6 | 89 | return snprintf(buf, PAGE_SIZE, "%pUB\n", uuid); |
02e3cc70 SW |
90 | } |
91 | ||
b3b94faa DT |
92 | static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) |
93 | { | |
d564053f SW |
94 | struct super_block *sb = sdp->sd_vfs; |
95 | int frozen = (sb->s_writers.frozen == SB_UNFROZEN) ? 0 : 1; | |
b3b94faa | 96 | |
d564053f | 97 | return snprintf(buf, PAGE_SIZE, "%u\n", frozen); |
b3b94faa DT |
98 | } |
99 | ||
100 | static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
101 | { | |
d564053f | 102 | int error; |
b3b94faa DT |
103 | int n = simple_strtol(buf, NULL, 0); |
104 | ||
105 | if (!capable(CAP_SYS_ADMIN)) | |
41735818 | 106 | return -EPERM; |
b3b94faa DT |
107 | |
108 | switch (n) { | |
109 | case 0: | |
d564053f | 110 | error = thaw_super(sdp->sd_vfs); |
b3b94faa DT |
111 | break; |
112 | case 1: | |
d564053f | 113 | error = freeze_super(sdp->sd_vfs); |
b3b94faa DT |
114 | break; |
115 | default: | |
d564053f | 116 | return -EINVAL; |
b3b94faa DT |
117 | } |
118 | ||
d564053f | 119 | if (error) { |
b3b94faa | 120 | fs_warn(sdp, "freeze %d error %d", n, error); |
d564053f SW |
121 | return error; |
122 | } | |
b3b94faa | 123 | |
d564053f | 124 | return len; |
b3b94faa DT |
125 | } |
126 | ||
127 | static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf) | |
128 | { | |
129 | unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags); | |
3204a6c0 | 130 | return snprintf(buf, PAGE_SIZE, "%u\n", b); |
b3b94faa DT |
131 | } |
132 | ||
133 | static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
134 | { | |
135 | if (!capable(CAP_SYS_ADMIN)) | |
41735818 | 136 | return -EPERM; |
b3b94faa DT |
137 | |
138 | if (simple_strtol(buf, NULL, 0) != 1) | |
139 | return -EINVAL; | |
140 | ||
141 | gfs2_lm_withdraw(sdp, | |
142 | "GFS2: fsid=%s: withdrawing from cluster at user's request\n", | |
143 | sdp->sd_fsname); | |
144 | return len; | |
145 | } | |
146 | ||
147 | static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, | |
148 | size_t len) | |
149 | { | |
150 | if (!capable(CAP_SYS_ADMIN)) | |
41735818 | 151 | return -EPERM; |
b3b94faa DT |
152 | |
153 | if (simple_strtol(buf, NULL, 0) != 1) | |
154 | return -EINVAL; | |
155 | ||
8c42d637 | 156 | gfs2_statfs_sync(sdp->sd_vfs, 0); |
b3b94faa DT |
157 | return len; |
158 | } | |
159 | ||
b3b94faa DT |
160 | static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, |
161 | size_t len) | |
162 | { | |
163 | if (!capable(CAP_SYS_ADMIN)) | |
41735818 | 164 | return -EPERM; |
b3b94faa DT |
165 | |
166 | if (simple_strtol(buf, NULL, 0) != 1) | |
167 | return -EINVAL; | |
168 | ||
ceed1723 | 169 | gfs2_quota_sync(sdp->sd_vfs, 0); |
b3b94faa DT |
170 | return len; |
171 | } | |
172 | ||
173 | static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf, | |
174 | size_t len) | |
175 | { | |
ed87dabc | 176 | struct kqid qid; |
ea762338 | 177 | int error; |
cd915493 | 178 | u32 id; |
b3b94faa DT |
179 | |
180 | if (!capable(CAP_SYS_ADMIN)) | |
41735818 | 181 | return -EPERM; |
b3b94faa DT |
182 | |
183 | id = simple_strtoul(buf, NULL, 0); | |
184 | ||
ed87dabc EB |
185 | qid = make_kqid(current_user_ns(), USRQUOTA, id); |
186 | if (!qid_valid(qid)) | |
187 | return -EINVAL; | |
188 | ||
189 | error = gfs2_quota_refresh(sdp, qid); | |
ea762338 | 190 | return error ? error : len; |
b3b94faa DT |
191 | } |
192 | ||
193 | static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, | |
194 | size_t len) | |
195 | { | |
ed87dabc | 196 | struct kqid qid; |
ea762338 | 197 | int error; |
cd915493 | 198 | u32 id; |
b3b94faa DT |
199 | |
200 | if (!capable(CAP_SYS_ADMIN)) | |
41735818 | 201 | return -EPERM; |
b3b94faa DT |
202 | |
203 | id = simple_strtoul(buf, NULL, 0); | |
204 | ||
ed87dabc EB |
205 | qid = make_kqid(current_user_ns(), GRPQUOTA, id); |
206 | if (!qid_valid(qid)) | |
207 | return -EINVAL; | |
208 | ||
209 | error = gfs2_quota_refresh(sdp, qid); | |
ea762338 | 210 | return error ? error : len; |
b3b94faa DT |
211 | } |
212 | ||
64d576ba SW |
213 | static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
214 | { | |
215 | struct gfs2_glock *gl; | |
216 | const struct gfs2_glock_operations *glops; | |
217 | unsigned int glmode; | |
218 | unsigned int gltype; | |
219 | unsigned long long glnum; | |
220 | char mode[16]; | |
221 | int rv; | |
222 | ||
223 | if (!capable(CAP_SYS_ADMIN)) | |
41735818 | 224 | return -EPERM; |
64d576ba SW |
225 | |
226 | rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum, | |
227 | mode); | |
228 | if (rv != 3) | |
229 | return -EINVAL; | |
230 | ||
231 | if (strcmp(mode, "EX") == 0) | |
232 | glmode = LM_ST_UNLOCKED; | |
233 | else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0)) | |
234 | glmode = LM_ST_DEFERRED; | |
235 | else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0)) | |
236 | glmode = LM_ST_SHARED; | |
237 | else | |
238 | return -EINVAL; | |
239 | ||
240 | if (gltype > LM_TYPE_JOURNAL) | |
241 | return -EINVAL; | |
13466985 SW |
242 | if (gltype == LM_TYPE_NONDISK && glnum == GFS2_TRANS_LOCK) |
243 | glops = &gfs2_trans_glops; | |
244 | else | |
245 | glops = gfs2_glops_list[gltype]; | |
64d576ba SW |
246 | if (glops == NULL) |
247 | return -EINVAL; | |
6a99be5d | 248 | if (!test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags)) |
913a71d2 | 249 | fs_info(sdp, "demote interface used\n"); |
64d576ba SW |
250 | rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl); |
251 | if (rv) | |
252 | return rv; | |
253 | gfs2_glock_cb(gl, glmode); | |
254 | gfs2_glock_put(gl); | |
255 | return len; | |
256 | } | |
257 | ||
b3b94faa DT |
258 | |
259 | #define GFS2_ATTR(name, mode, show, store) \ | |
260 | static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store) | |
261 | ||
262 | GFS2_ATTR(id, 0444, id_show, NULL); | |
263 | GFS2_ATTR(fsname, 0444, fsname_show, NULL); | |
02e3cc70 | 264 | GFS2_ATTR(uuid, 0444, uuid_show, NULL); |
b3b94faa | 265 | GFS2_ATTR(freeze, 0644, freeze_show, freeze_store); |
b3b94faa DT |
266 | GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store); |
267 | GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store); | |
268 | GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store); | |
269 | GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store); | |
270 | GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store); | |
64d576ba | 271 | GFS2_ATTR(demote_rq, 0200, NULL, demote_rq_store); |
b3b94faa DT |
272 | |
273 | static struct attribute *gfs2_attrs[] = { | |
274 | &gfs2_attr_id.attr, | |
275 | &gfs2_attr_fsname.attr, | |
02e3cc70 | 276 | &gfs2_attr_uuid.attr, |
b3b94faa | 277 | &gfs2_attr_freeze.attr, |
b3b94faa DT |
278 | &gfs2_attr_withdraw.attr, |
279 | &gfs2_attr_statfs_sync.attr, | |
280 | &gfs2_attr_quota_sync.attr, | |
281 | &gfs2_attr_quota_refresh_user.attr, | |
282 | &gfs2_attr_quota_refresh_group.attr, | |
64d576ba | 283 | &gfs2_attr_demote_rq.attr, |
b3b94faa DT |
284 | NULL, |
285 | }; | |
286 | ||
0d515210 BP |
287 | static void gfs2_sbd_release(struct kobject *kobj) |
288 | { | |
289 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); | |
290 | ||
291 | kfree(sdp); | |
292 | } | |
293 | ||
b3b94faa | 294 | static struct kobj_type gfs2_ktype = { |
0d515210 | 295 | .release = gfs2_sbd_release, |
b3b94faa DT |
296 | .default_attrs = gfs2_attrs, |
297 | .sysfs_ops = &gfs2_attr_ops, | |
298 | }; | |
299 | ||
f057f6cd SW |
300 | |
301 | /* | |
302 | * lock_module. Originally from lock_dlm | |
303 | */ | |
304 | ||
305 | static ssize_t proto_name_show(struct gfs2_sbd *sdp, char *buf) | |
306 | { | |
307 | const struct lm_lockops *ops = sdp->sd_lockstruct.ls_ops; | |
308 | return sprintf(buf, "%s\n", ops->lm_proto_name); | |
309 | } | |
310 | ||
311 | static ssize_t block_show(struct gfs2_sbd *sdp, char *buf) | |
312 | { | |
313 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
314 | ssize_t ret; | |
315 | int val = 0; | |
316 | ||
e0c2a9aa | 317 | if (test_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags)) |
f057f6cd SW |
318 | val = 1; |
319 | ret = sprintf(buf, "%d\n", val); | |
320 | return ret; | |
321 | } | |
322 | ||
323 | static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
324 | { | |
325 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
326 | ssize_t ret = len; | |
327 | int val; | |
328 | ||
329 | val = simple_strtol(buf, NULL, 0); | |
330 | ||
331 | if (val == 1) | |
e0c2a9aa | 332 | set_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags); |
f057f6cd | 333 | else if (val == 0) { |
e0c2a9aa | 334 | clear_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags); |
f057f6cd SW |
335 | smp_mb__after_clear_bit(); |
336 | gfs2_glock_thaw(sdp); | |
337 | } else { | |
338 | ret = -EINVAL; | |
339 | } | |
340 | return ret; | |
341 | } | |
342 | ||
fd95e81c SW |
343 | static ssize_t wdack_show(struct gfs2_sbd *sdp, char *buf) |
344 | { | |
345 | int val = completion_done(&sdp->sd_wdack) ? 1 : 0; | |
346 | ||
347 | return sprintf(buf, "%d\n", val); | |
348 | } | |
349 | ||
350 | static ssize_t wdack_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
351 | { | |
352 | ssize_t ret = len; | |
353 | int val; | |
354 | ||
355 | val = simple_strtol(buf, NULL, 0); | |
356 | ||
357 | if ((val == 1) && | |
358 | !strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm")) | |
359 | complete(&sdp->sd_wdack); | |
360 | else | |
361 | ret = -EINVAL; | |
362 | return ret; | |
363 | } | |
364 | ||
f057f6cd SW |
365 | static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf) |
366 | { | |
367 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
368 | return sprintf(buf, "%d\n", ls->ls_first); | |
369 | } | |
370 | ||
ba6e9364 SW |
371 | static ssize_t lkfirst_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
372 | { | |
373 | unsigned first; | |
374 | int rv; | |
375 | ||
376 | rv = sscanf(buf, "%u", &first); | |
377 | if (rv != 1 || first > 1) | |
378 | return -EINVAL; | |
3942ae53 SW |
379 | rv = wait_for_completion_killable(&sdp->sd_locking_init); |
380 | if (rv) | |
381 | return rv; | |
ba6e9364 SW |
382 | spin_lock(&sdp->sd_jindex_spin); |
383 | rv = -EBUSY; | |
384 | if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) | |
385 | goto out; | |
386 | rv = -EINVAL; | |
387 | if (sdp->sd_args.ar_spectator) | |
388 | goto out; | |
389 | if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) | |
390 | goto out; | |
e0c2a9aa DT |
391 | sdp->sd_lockstruct.ls_first = first; |
392 | rv = 0; | |
ba6e9364 SW |
393 | out: |
394 | spin_unlock(&sdp->sd_jindex_spin); | |
395 | return rv ? rv : len; | |
396 | } | |
397 | ||
f057f6cd SW |
398 | static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf) |
399 | { | |
400 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
e0c2a9aa | 401 | return sprintf(buf, "%d\n", !!test_bit(DFL_FIRST_MOUNT_DONE, &ls->ls_recover_flags)); |
f057f6cd SW |
402 | } |
403 | ||
e0c2a9aa | 404 | int gfs2_recover_set(struct gfs2_sbd *sdp, unsigned jid) |
f057f6cd SW |
405 | { |
406 | struct gfs2_jdesc *jd; | |
fe64d517 SW |
407 | int rv; |
408 | ||
f057f6cd | 409 | spin_lock(&sdp->sd_jindex_spin); |
fe64d517 SW |
410 | rv = -EBUSY; |
411 | if (sdp->sd_jdesc->jd_jid == jid) | |
412 | goto out; | |
413 | rv = -ENOENT; | |
f057f6cd SW |
414 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { |
415 | if (jd->jd_jid != jid) | |
416 | continue; | |
6ecd7c2d | 417 | rv = gfs2_recover_journal(jd, false); |
f057f6cd SW |
418 | break; |
419 | } | |
fe64d517 | 420 | out: |
f057f6cd | 421 | spin_unlock(&sdp->sd_jindex_spin); |
e0c2a9aa DT |
422 | return rv; |
423 | } | |
424 | ||
425 | static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
426 | { | |
427 | unsigned jid; | |
428 | int rv; | |
429 | ||
430 | rv = sscanf(buf, "%u", &jid); | |
431 | if (rv != 1) | |
432 | return -EINVAL; | |
433 | ||
1a058f52 DT |
434 | if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) { |
435 | rv = -ESHUTDOWN; | |
436 | goto out; | |
437 | } | |
e0c2a9aa | 438 | |
1a058f52 DT |
439 | rv = gfs2_recover_set(sdp, jid); |
440 | out: | |
fe64d517 | 441 | return rv ? rv : len; |
f057f6cd SW |
442 | } |
443 | ||
444 | static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf) | |
445 | { | |
446 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
447 | return sprintf(buf, "%d\n", ls->ls_recover_jid_done); | |
448 | } | |
449 | ||
450 | static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf) | |
451 | { | |
452 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
453 | return sprintf(buf, "%d\n", ls->ls_recover_jid_status); | |
454 | } | |
455 | ||
e1b28aab SW |
456 | static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf) |
457 | { | |
feb47ca9 | 458 | return sprintf(buf, "%d\n", sdp->sd_lockstruct.ls_jid); |
e1b28aab SW |
459 | } |
460 | ||
ba6e9364 SW |
461 | static ssize_t jid_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
462 | { | |
feb47ca9 | 463 | int jid; |
ba6e9364 SW |
464 | int rv; |
465 | ||
feb47ca9 | 466 | rv = sscanf(buf, "%d", &jid); |
ba6e9364 SW |
467 | if (rv != 1) |
468 | return -EINVAL; | |
3942ae53 SW |
469 | rv = wait_for_completion_killable(&sdp->sd_locking_init); |
470 | if (rv) | |
471 | return rv; | |
ba6e9364 SW |
472 | spin_lock(&sdp->sd_jindex_spin); |
473 | rv = -EINVAL; | |
ba6e9364 SW |
474 | if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) |
475 | goto out; | |
476 | rv = -EBUSY; | |
feb47ca9 | 477 | if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) |
ba6e9364 | 478 | goto out; |
feb47ca9 SW |
479 | rv = 0; |
480 | if (sdp->sd_args.ar_spectator && jid > 0) | |
481 | rv = jid = -EINVAL; | |
ba6e9364 | 482 | sdp->sd_lockstruct.ls_jid = jid; |
feb47ca9 | 483 | clear_bit(SDF_NOJOURNALID, &sdp->sd_flags); |
ba6e9364 SW |
484 | smp_mb__after_clear_bit(); |
485 | wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID); | |
ba6e9364 SW |
486 | out: |
487 | spin_unlock(&sdp->sd_jindex_spin); | |
488 | return rv ? rv : len; | |
489 | } | |
490 | ||
f057f6cd | 491 | #define GDLM_ATTR(_name,_mode,_show,_store) \ |
48c2b613 | 492 | static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store) |
f057f6cd | 493 | |
d7e623da SW |
494 | GDLM_ATTR(proto_name, 0444, proto_name_show, NULL); |
495 | GDLM_ATTR(block, 0644, block_show, block_store); | |
fd95e81c | 496 | GDLM_ATTR(withdraw, 0644, wdack_show, wdack_store); |
ba6e9364 SW |
497 | GDLM_ATTR(jid, 0644, jid_show, jid_store); |
498 | GDLM_ATTR(first, 0644, lkfirst_show, lkfirst_store); | |
d7e623da SW |
499 | GDLM_ATTR(first_done, 0444, first_done_show, NULL); |
500 | GDLM_ATTR(recover, 0600, NULL, recover_store); | |
501 | GDLM_ATTR(recover_done, 0444, recover_done_show, NULL); | |
502 | GDLM_ATTR(recover_status, 0444, recover_status_show, NULL); | |
f057f6cd SW |
503 | |
504 | static struct attribute *lock_module_attrs[] = { | |
505 | &gdlm_attr_proto_name.attr, | |
506 | &gdlm_attr_block.attr, | |
507 | &gdlm_attr_withdraw.attr, | |
e1b28aab | 508 | &gdlm_attr_jid.attr, |
f057f6cd SW |
509 | &gdlm_attr_first.attr, |
510 | &gdlm_attr_first_done.attr, | |
511 | &gdlm_attr_recover.attr, | |
512 | &gdlm_attr_recover_done.attr, | |
513 | &gdlm_attr_recover_status.attr, | |
ea67eedb | 514 | NULL, |
b3b94faa DT |
515 | }; |
516 | ||
b3b94faa DT |
517 | /* |
518 | * get and set struct gfs2_tune fields | |
519 | */ | |
520 | ||
521 | static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) | |
522 | { | |
3204a6c0 DT |
523 | return snprintf(buf, PAGE_SIZE, "%u %u\n", |
524 | sdp->sd_tune.gt_quota_scale_num, | |
525 | sdp->sd_tune.gt_quota_scale_den); | |
b3b94faa DT |
526 | } |
527 | ||
528 | static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, | |
529 | size_t len) | |
530 | { | |
531 | struct gfs2_tune *gt = &sdp->sd_tune; | |
532 | unsigned int x, y; | |
533 | ||
534 | if (!capable(CAP_SYS_ADMIN)) | |
41735818 | 535 | return -EPERM; |
b3b94faa DT |
536 | |
537 | if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) | |
538 | return -EINVAL; | |
539 | ||
540 | spin_lock(>->gt_spin); | |
541 | gt->gt_quota_scale_num = x; | |
542 | gt->gt_quota_scale_den = y; | |
543 | spin_unlock(>->gt_spin); | |
544 | return len; | |
545 | } | |
546 | ||
547 | static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, | |
548 | int check_zero, const char *buf, size_t len) | |
549 | { | |
550 | struct gfs2_tune *gt = &sdp->sd_tune; | |
551 | unsigned int x; | |
552 | ||
553 | if (!capable(CAP_SYS_ADMIN)) | |
41735818 | 554 | return -EPERM; |
b3b94faa DT |
555 | |
556 | x = simple_strtoul(buf, NULL, 0); | |
557 | ||
558 | if (check_zero && !x) | |
559 | return -EINVAL; | |
560 | ||
561 | spin_lock(>->gt_spin); | |
562 | *field = x; | |
563 | spin_unlock(>->gt_spin); | |
564 | return len; | |
565 | } | |
566 | ||
b3b94faa | 567 | #define TUNE_ATTR_3(name, show, store) \ |
48c2b613 | 568 | static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store) |
b3b94faa DT |
569 | |
570 | #define TUNE_ATTR_2(name, store) \ | |
571 | static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ | |
572 | { \ | |
3204a6c0 | 573 | return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \ |
b3b94faa DT |
574 | } \ |
575 | TUNE_ATTR_3(name, name##_show, store) | |
576 | ||
577 | #define TUNE_ATTR(name, check_zero) \ | |
578 | static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ | |
579 | { \ | |
580 | return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ | |
581 | } \ | |
582 | TUNE_ATTR_2(name, name##_store) | |
583 | ||
b3b94faa DT |
584 | TUNE_ATTR(quota_warn_period, 0); |
585 | TUNE_ATTR(quota_quantum, 0); | |
b3b94faa DT |
586 | TUNE_ATTR(max_readahead, 0); |
587 | TUNE_ATTR(complain_secs, 0); | |
b3b94faa DT |
588 | TUNE_ATTR(statfs_slow, 0); |
589 | TUNE_ATTR(new_files_jdata, 0); | |
b3b94faa | 590 | TUNE_ATTR(quota_simul_sync, 1); |
b3b94faa | 591 | TUNE_ATTR(statfs_quantum, 1); |
b3b94faa DT |
592 | TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); |
593 | ||
594 | static struct attribute *tune_attrs[] = { | |
b3b94faa DT |
595 | &tune_attr_quota_warn_period.attr, |
596 | &tune_attr_quota_quantum.attr, | |
b3b94faa DT |
597 | &tune_attr_max_readahead.attr, |
598 | &tune_attr_complain_secs.attr, | |
b3b94faa DT |
599 | &tune_attr_statfs_slow.attr, |
600 | &tune_attr_quota_simul_sync.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 |