Blame view
fs/gfs2/sys.c
16.3 KB
b3b94faa5 [GFS2] The core o... |
1 2 |
/* * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
3a8a9a103 [GFS2] Update cop... |
3 |
* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
b3b94faa5 [GFS2] The core o... |
4 5 6 |
* * This copyrighted material is made available to anyone wishing to use, * modify, copy, or redistribute it subject to the terms and conditions |
e9fc2aa09 [GFS2] Update cop... |
7 |
* of the GNU General Public License version 2. |
b3b94faa5 [GFS2] The core o... |
8 9 10 |
*/ #include <linux/sched.h> |
b3b94faa5 [GFS2] The core o... |
11 12 13 14 15 |
#include <linux/spinlock.h> #include <linux/completion.h> #include <linux/buffer_head.h> #include <linux/module.h> #include <linux/kobject.h> |
b3b94faa5 [GFS2] The core o... |
16 |
#include <asm/uaccess.h> |
f057f6cdf GFS2: Merge lock_... |
17 |
#include <linux/gfs2_ondisk.h> |
31e54b01f GFS2: Add sysfs l... |
18 |
#include <linux/genhd.h> |
b3b94faa5 [GFS2] The core o... |
19 20 |
#include "gfs2.h" |
5c676f6d3 [GFS2] Macros rem... |
21 |
#include "incore.h" |
b3b94faa5 [GFS2] The core o... |
22 23 24 25 |
#include "sys.h" #include "super.h" #include "glock.h" #include "quota.h" |
5c676f6d3 [GFS2] Macros rem... |
26 |
#include "util.h" |
64d576ba2 GFS2: Add a "demo... |
27 |
#include "glops.h" |
6ecd7c2dd gfs2: use workque... |
28 |
#include "recovery.h" |
b3b94faa5 [GFS2] The core o... |
29 |
|
48c2b6136 GFS2: Add commit=... |
30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 |
struct gfs2_attr { struct attribute attr; ssize_t (*show)(struct gfs2_sbd *, char *); ssize_t (*store)(struct gfs2_sbd *, const char *, size_t); }; static ssize_t gfs2_attr_show(struct kobject *kobj, struct attribute *attr, char *buf) { struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); return a->show ? a->show(sdp, buf) : 0; } static ssize_t gfs2_attr_store(struct kobject *kobj, struct attribute *attr, const char *buf, size_t len) { struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); return a->store ? a->store(sdp, buf, len) : len; } |
52cf25d0a Driver core: Cons... |
51 |
static const struct sysfs_ops gfs2_attr_ops = { |
48c2b6136 GFS2: Add commit=... |
52 53 54 55 56 57 |
.show = gfs2_attr_show, .store = gfs2_attr_store, }; static struct kset *gfs2_kset; |
b3b94faa5 [GFS2] The core o... |
58 59 |
static ssize_t id_show(struct gfs2_sbd *sdp, char *buf) { |
c7227e464 [GFS2] Given devi... |
60 61 62 |
return snprintf(buf, PAGE_SIZE, "%u:%u ", MAJOR(sdp->sd_vfs->s_dev), MINOR(sdp->sd_vfs->s_dev)); |
b3b94faa5 [GFS2] The core o... |
63 64 65 66 |
} static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf) { |
3204a6c05 [GFS2] use snprin... |
67 68 |
return snprintf(buf, PAGE_SIZE, "%s ", sdp->sd_fsname); |
b3b94faa5 [GFS2] The core o... |
69 |
} |
02e3cc70e GFS2: Expose UUID... |
70 71 72 73 74 75 76 77 78 79 80 81 82 |
static int gfs2_uuid_valid(const u8 *uuid) { int i; for (i = 0; i < 16; i++) { if (uuid[i]) return 1; } return 0; } static ssize_t uuid_show(struct gfs2_sbd *sdp, char *buf) { |
32e471ef1 GFS2: Use UUID fi... |
83 84 |
struct super_block *s = sdp->sd_vfs; const u8 *uuid = s->s_uuid; |
02e3cc70e GFS2: Expose UUID... |
85 86 87 |
buf[0] = '\0'; if (!gfs2_uuid_valid(uuid)) return 0; |
f0b34ae63 fs/gfs2/sys.c: us... |
88 89 |
return snprintf(buf, PAGE_SIZE, "%pUB ", uuid); |
02e3cc70e GFS2: Expose UUID... |
90 |
} |
b3b94faa5 [GFS2] The core o... |
91 92 93 |
static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) { unsigned int count; |
f55ab26a8 [GFS2] Use mutice... |
94 |
mutex_lock(&sdp->sd_freeze_lock); |
b3b94faa5 [GFS2] The core o... |
95 |
count = sdp->sd_freeze_count; |
f55ab26a8 [GFS2] Use mutice... |
96 |
mutex_unlock(&sdp->sd_freeze_lock); |
b3b94faa5 [GFS2] The core o... |
97 |
|
3204a6c05 [GFS2] use snprin... |
98 99 |
return snprintf(buf, PAGE_SIZE, "%u ", count); |
b3b94faa5 [GFS2] The core o... |
100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 |
} static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) { ssize_t ret = len; int error = 0; int n = simple_strtol(buf, NULL, 0); if (!capable(CAP_SYS_ADMIN)) return -EACCES; switch (n) { case 0: gfs2_unfreeze_fs(sdp); break; case 1: error = gfs2_freeze_fs(sdp); break; default: ret = -EINVAL; } if (error) fs_warn(sdp, "freeze %d error %d", n, error); return ret; } static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf) { unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags); |
3204a6c05 [GFS2] use snprin... |
131 132 |
return snprintf(buf, PAGE_SIZE, "%u ", b); |
b3b94faa5 [GFS2] The core o... |
133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 |
} static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) { if (!capable(CAP_SYS_ADMIN)) return -EACCES; if (simple_strtol(buf, NULL, 0) != 1) return -EINVAL; gfs2_lm_withdraw(sdp, "GFS2: fsid=%s: withdrawing from cluster at user's request ", sdp->sd_fsname); return len; } static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, size_t len) { if (!capable(CAP_SYS_ADMIN)) return -EACCES; if (simple_strtol(buf, NULL, 0) != 1) return -EINVAL; |
8c42d637f GFS2: Alter argum... |
158 |
gfs2_statfs_sync(sdp->sd_vfs, 0); |
b3b94faa5 [GFS2] The core o... |
159 160 |
return len; } |
b3b94faa5 [GFS2] The core o... |
161 162 163 164 165 166 167 168 |
static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, size_t len) { if (!capable(CAP_SYS_ADMIN)) return -EACCES; if (simple_strtol(buf, NULL, 0) != 1) return -EINVAL; |
5fb324ad2 quota: move code ... |
169 |
gfs2_quota_sync(sdp->sd_vfs, 0, 1); |
b3b94faa5 [GFS2] The core o... |
170 171 172 173 174 175 |
return len; } static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf, size_t len) { |
ea7623385 GFS2: Add proper ... |
176 |
int error; |
cd915493f [GFS2] Change all... |
177 |
u32 id; |
b3b94faa5 [GFS2] The core o... |
178 179 180 181 182 |
if (!capable(CAP_SYS_ADMIN)) return -EACCES; id = simple_strtoul(buf, NULL, 0); |
ea7623385 GFS2: Add proper ... |
183 184 |
error = gfs2_quota_refresh(sdp, 1, id); return error ? error : len; |
b3b94faa5 [GFS2] The core o... |
185 186 187 188 189 |
} static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, size_t len) { |
ea7623385 GFS2: Add proper ... |
190 |
int error; |
cd915493f [GFS2] Change all... |
191 |
u32 id; |
b3b94faa5 [GFS2] The core o... |
192 193 194 195 196 |
if (!capable(CAP_SYS_ADMIN)) return -EACCES; id = simple_strtoul(buf, NULL, 0); |
ea7623385 GFS2: Add proper ... |
197 198 |
error = gfs2_quota_refresh(sdp, 0, id); return error ? error : len; |
b3b94faa5 [GFS2] The core o... |
199 |
} |
64d576ba2 GFS2: Add a "demo... |
200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 |
static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len) { struct gfs2_glock *gl; const struct gfs2_glock_operations *glops; unsigned int glmode; unsigned int gltype; unsigned long long glnum; char mode[16]; int rv; if (!capable(CAP_SYS_ADMIN)) return -EACCES; rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum, mode); if (rv != 3) return -EINVAL; if (strcmp(mode, "EX") == 0) glmode = LM_ST_UNLOCKED; else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0)) glmode = LM_ST_DEFERRED; else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0)) glmode = LM_ST_SHARED; else return -EINVAL; if (gltype > LM_TYPE_JOURNAL) return -EINVAL; |
134669854 GFS2: Fix type ma... |
229 230 231 232 |
if (gltype == LM_TYPE_NONDISK && glnum == GFS2_TRANS_LOCK) glops = &gfs2_trans_glops; else glops = gfs2_glops_list[gltype]; |
64d576ba2 GFS2: Add a "demo... |
233 234 |
if (glops == NULL) return -EINVAL; |
6a99be5d7 GFS2: Fix typo |
235 |
if (!test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags)) |
913a71d25 GFS2: Add some us... |
236 237 |
fs_info(sdp, "demote interface used "); |
64d576ba2 GFS2: Add a "demo... |
238 239 240 241 242 243 244 |
rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl); if (rv) return rv; gfs2_glock_cb(gl, glmode); gfs2_glock_put(gl); return len; } |
b3b94faa5 [GFS2] The core o... |
245 246 247 248 249 250 |
#define GFS2_ATTR(name, mode, show, store) \ static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store) GFS2_ATTR(id, 0444, id_show, NULL); GFS2_ATTR(fsname, 0444, fsname_show, NULL); |
02e3cc70e GFS2: Expose UUID... |
251 |
GFS2_ATTR(uuid, 0444, uuid_show, NULL); |
b3b94faa5 [GFS2] The core o... |
252 |
GFS2_ATTR(freeze, 0644, freeze_show, freeze_store); |
b3b94faa5 [GFS2] The core o... |
253 254 255 256 257 |
GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store); GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store); GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store); GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store); GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store); |
64d576ba2 GFS2: Add a "demo... |
258 |
GFS2_ATTR(demote_rq, 0200, NULL, demote_rq_store); |
b3b94faa5 [GFS2] The core o... |
259 260 261 262 |
static struct attribute *gfs2_attrs[] = { &gfs2_attr_id.attr, &gfs2_attr_fsname.attr, |
02e3cc70e GFS2: Expose UUID... |
263 |
&gfs2_attr_uuid.attr, |
b3b94faa5 [GFS2] The core o... |
264 |
&gfs2_attr_freeze.attr, |
b3b94faa5 [GFS2] The core o... |
265 266 267 268 269 |
&gfs2_attr_withdraw.attr, &gfs2_attr_statfs_sync.attr, &gfs2_attr_quota_sync.attr, &gfs2_attr_quota_refresh_user.attr, &gfs2_attr_quota_refresh_group.attr, |
64d576ba2 GFS2: Add a "demo... |
270 |
&gfs2_attr_demote_rq.attr, |
b3b94faa5 [GFS2] The core o... |
271 272 |
NULL, }; |
b3b94faa5 [GFS2] The core o... |
273 274 275 276 |
static struct kobj_type gfs2_ktype = { .default_attrs = gfs2_attrs, .sysfs_ops = &gfs2_attr_ops, }; |
f057f6cdf GFS2: Merge lock_... |
277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 |
/* * lock_module. Originally from lock_dlm */ static ssize_t proto_name_show(struct gfs2_sbd *sdp, char *buf) { const struct lm_lockops *ops = sdp->sd_lockstruct.ls_ops; return sprintf(buf, "%s ", ops->lm_proto_name); } static ssize_t block_show(struct gfs2_sbd *sdp, char *buf) { struct lm_lockstruct *ls = &sdp->sd_lockstruct; ssize_t ret; int val = 0; |
e0c2a9aa1 GFS2: dlm based r... |
294 |
if (test_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags)) |
f057f6cdf GFS2: Merge lock_... |
295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 |
val = 1; ret = sprintf(buf, "%d ", val); return ret; } static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len) { struct lm_lockstruct *ls = &sdp->sd_lockstruct; ssize_t ret = len; int val; val = simple_strtol(buf, NULL, 0); if (val == 1) |
e0c2a9aa1 GFS2: dlm based r... |
310 |
set_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags); |
f057f6cdf GFS2: Merge lock_... |
311 |
else if (val == 0) { |
e0c2a9aa1 GFS2: dlm based r... |
312 |
clear_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags); |
f057f6cdf GFS2: Merge lock_... |
313 314 315 316 317 318 319 |
smp_mb__after_clear_bit(); gfs2_glock_thaw(sdp); } else { ret = -EINVAL; } return ret; } |
f057f6cdf GFS2: Merge lock_... |
320 321 322 323 324 325 |
static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf) { struct lm_lockstruct *ls = &sdp->sd_lockstruct; return sprintf(buf, "%d ", ls->ls_first); } |
ba6e93645 GFS2: Wait for jo... |
326 327 328 329 330 331 332 333 |
static ssize_t lkfirst_store(struct gfs2_sbd *sdp, const char *buf, size_t len) { unsigned first; int rv; rv = sscanf(buf, "%u", &first); if (rv != 1 || first > 1) return -EINVAL; |
3942ae531 GFS2: Fix race du... |
334 335 336 |
rv = wait_for_completion_killable(&sdp->sd_locking_init); if (rv) return rv; |
ba6e93645 GFS2: Wait for jo... |
337 338 339 340 341 342 343 344 345 |
spin_lock(&sdp->sd_jindex_spin); rv = -EBUSY; if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) goto out; rv = -EINVAL; if (sdp->sd_args.ar_spectator) goto out; if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) goto out; |
e0c2a9aa1 GFS2: dlm based r... |
346 347 |
sdp->sd_lockstruct.ls_first = first; rv = 0; |
ba6e93645 GFS2: Wait for jo... |
348 349 350 351 |
out: spin_unlock(&sdp->sd_jindex_spin); return rv ? rv : len; } |
f057f6cdf GFS2: Merge lock_... |
352 353 354 |
static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf) { struct lm_lockstruct *ls = &sdp->sd_lockstruct; |
e0c2a9aa1 GFS2: dlm based r... |
355 356 |
return sprintf(buf, "%d ", !!test_bit(DFL_FIRST_MOUNT_DONE, &ls->ls_recover_flags)); |
f057f6cdf GFS2: Merge lock_... |
357 |
} |
e0c2a9aa1 GFS2: dlm based r... |
358 |
int gfs2_recover_set(struct gfs2_sbd *sdp, unsigned jid) |
f057f6cdf GFS2: Merge lock_... |
359 360 |
{ struct gfs2_jdesc *jd; |
fe64d517d GFS2: Umount reco... |
361 |
int rv; |
fe64d517d GFS2: Umount reco... |
362 |
rv = -ESHUTDOWN; |
f057f6cdf GFS2: Merge lock_... |
363 |
spin_lock(&sdp->sd_jindex_spin); |
fe64d517d GFS2: Umount reco... |
364 365 366 367 368 369 |
if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) goto out; rv = -EBUSY; if (sdp->sd_jdesc->jd_jid == jid) goto out; rv = -ENOENT; |
f057f6cdf GFS2: Merge lock_... |
370 371 372 |
list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { if (jd->jd_jid != jid) continue; |
6ecd7c2dd gfs2: use workque... |
373 |
rv = gfs2_recover_journal(jd, false); |
f057f6cdf GFS2: Merge lock_... |
374 375 |
break; } |
fe64d517d GFS2: Umount reco... |
376 |
out: |
f057f6cdf GFS2: Merge lock_... |
377 |
spin_unlock(&sdp->sd_jindex_spin); |
e0c2a9aa1 GFS2: dlm based r... |
378 379 380 381 382 383 384 385 386 387 388 389 390 |
return rv; } static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len) { unsigned jid; int rv; rv = sscanf(buf, "%u", &jid); if (rv != 1) return -EINVAL; rv = gfs2_recover_set(sdp, jid); |
fe64d517d GFS2: Umount reco... |
391 |
return rv ? rv : len; |
f057f6cdf GFS2: Merge lock_... |
392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 |
} static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf) { struct lm_lockstruct *ls = &sdp->sd_lockstruct; return sprintf(buf, "%d ", ls->ls_recover_jid_done); } static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf) { struct lm_lockstruct *ls = &sdp->sd_lockstruct; return sprintf(buf, "%d ", ls->ls_recover_jid_status); } |
e1b28aab5 GFS2: Remove lock... |
407 408 |
static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf) { |
feb47ca93 GFS2: Improve jou... |
409 410 |
return sprintf(buf, "%d ", sdp->sd_lockstruct.ls_jid); |
e1b28aab5 GFS2: Remove lock... |
411 |
} |
ba6e93645 GFS2: Wait for jo... |
412 413 |
static ssize_t jid_store(struct gfs2_sbd *sdp, const char *buf, size_t len) { |
feb47ca93 GFS2: Improve jou... |
414 |
int jid; |
ba6e93645 GFS2: Wait for jo... |
415 |
int rv; |
feb47ca93 GFS2: Improve jou... |
416 |
rv = sscanf(buf, "%d", &jid); |
ba6e93645 GFS2: Wait for jo... |
417 418 |
if (rv != 1) return -EINVAL; |
3942ae531 GFS2: Fix race du... |
419 420 421 |
rv = wait_for_completion_killable(&sdp->sd_locking_init); if (rv) return rv; |
ba6e93645 GFS2: Wait for jo... |
422 423 |
spin_lock(&sdp->sd_jindex_spin); rv = -EINVAL; |
ba6e93645 GFS2: Wait for jo... |
424 425 426 |
if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) goto out; rv = -EBUSY; |
feb47ca93 GFS2: Improve jou... |
427 |
if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) |
ba6e93645 GFS2: Wait for jo... |
428 |
goto out; |
feb47ca93 GFS2: Improve jou... |
429 430 431 |
rv = 0; if (sdp->sd_args.ar_spectator && jid > 0) rv = jid = -EINVAL; |
ba6e93645 GFS2: Wait for jo... |
432 |
sdp->sd_lockstruct.ls_jid = jid; |
feb47ca93 GFS2: Improve jou... |
433 |
clear_bit(SDF_NOJOURNALID, &sdp->sd_flags); |
ba6e93645 GFS2: Wait for jo... |
434 435 |
smp_mb__after_clear_bit(); wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID); |
ba6e93645 GFS2: Wait for jo... |
436 437 438 439 |
out: spin_unlock(&sdp->sd_jindex_spin); return rv ? rv : len; } |
f057f6cdf GFS2: Merge lock_... |
440 |
#define GDLM_ATTR(_name,_mode,_show,_store) \ |
48c2b6136 GFS2: Add commit=... |
441 |
static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store) |
f057f6cdf GFS2: Merge lock_... |
442 |
|
d7e623da1 GFS2: Fix permiss... |
443 444 445 |
GDLM_ATTR(proto_name, 0444, proto_name_show, NULL); GDLM_ATTR(block, 0644, block_show, block_store); GDLM_ATTR(withdraw, 0644, withdraw_show, withdraw_store); |
ba6e93645 GFS2: Wait for jo... |
446 447 |
GDLM_ATTR(jid, 0644, jid_show, jid_store); GDLM_ATTR(first, 0644, lkfirst_show, lkfirst_store); |
d7e623da1 GFS2: Fix permiss... |
448 449 450 451 |
GDLM_ATTR(first_done, 0444, first_done_show, NULL); GDLM_ATTR(recover, 0600, NULL, recover_store); GDLM_ATTR(recover_done, 0444, recover_done_show, NULL); GDLM_ATTR(recover_status, 0444, recover_status_show, NULL); |
f057f6cdf GFS2: Merge lock_... |
452 453 454 455 456 |
static struct attribute *lock_module_attrs[] = { &gdlm_attr_proto_name.attr, &gdlm_attr_block.attr, &gdlm_attr_withdraw.attr, |
e1b28aab5 GFS2: Remove lock... |
457 |
&gdlm_attr_jid.attr, |
f057f6cdf GFS2: Merge lock_... |
458 459 460 461 462 |
&gdlm_attr_first.attr, &gdlm_attr_first_done.attr, &gdlm_attr_recover.attr, &gdlm_attr_recover_done.attr, &gdlm_attr_recover_status.attr, |
ea67eedb2 [GFS2] Fix end of... |
463 |
NULL, |
b3b94faa5 [GFS2] The core o... |
464 |
}; |
b3b94faa5 [GFS2] The core o... |
465 |
/* |
b3b94faa5 [GFS2] The core o... |
466 467 468 469 470 |
* get and set struct gfs2_tune fields */ static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) { |
3204a6c05 [GFS2] use snprin... |
471 472 473 474 |
return snprintf(buf, PAGE_SIZE, "%u %u ", sdp->sd_tune.gt_quota_scale_num, sdp->sd_tune.gt_quota_scale_den); |
b3b94faa5 [GFS2] The core o... |
475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 |
} static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, size_t len) { struct gfs2_tune *gt = &sdp->sd_tune; unsigned int x, y; if (!capable(CAP_SYS_ADMIN)) return -EACCES; if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) return -EINVAL; spin_lock(>->gt_spin); gt->gt_quota_scale_num = x; gt->gt_quota_scale_den = y; spin_unlock(>->gt_spin); return len; } static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, int check_zero, const char *buf, size_t len) { struct gfs2_tune *gt = &sdp->sd_tune; unsigned int x; if (!capable(CAP_SYS_ADMIN)) return -EACCES; x = simple_strtoul(buf, NULL, 0); if (check_zero && !x) return -EINVAL; spin_lock(>->gt_spin); *field = x; spin_unlock(>->gt_spin); return len; } |
b3b94faa5 [GFS2] The core o... |
515 |
#define TUNE_ATTR_3(name, show, store) \ |
48c2b6136 GFS2: Add commit=... |
516 |
static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store) |
b3b94faa5 [GFS2] The core o... |
517 518 519 520 |
#define TUNE_ATTR_2(name, store) \ static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ { \ |
3204a6c05 [GFS2] use snprin... |
521 522 |
return snprintf(buf, PAGE_SIZE, "%u ", sdp->sd_tune.gt_##name); \ |
b3b94faa5 [GFS2] The core o... |
523 524 525 526 527 528 529 530 531 |
} \ TUNE_ATTR_3(name, name##_show, store) #define TUNE_ATTR(name, check_zero) \ static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ { \ return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ } \ TUNE_ATTR_2(name, name##_store) |
b3b94faa5 [GFS2] The core o... |
532 533 |
TUNE_ATTR(quota_warn_period, 0); TUNE_ATTR(quota_quantum, 0); |
b3b94faa5 [GFS2] The core o... |
534 535 |
TUNE_ATTR(max_readahead, 0); TUNE_ATTR(complain_secs, 0); |
b3b94faa5 [GFS2] The core o... |
536 537 |
TUNE_ATTR(statfs_slow, 0); TUNE_ATTR(new_files_jdata, 0); |
b3b94faa5 [GFS2] The core o... |
538 |
TUNE_ATTR(quota_simul_sync, 1); |
b3b94faa5 [GFS2] The core o... |
539 |
TUNE_ATTR(statfs_quantum, 1); |
b3b94faa5 [GFS2] The core o... |
540 541 542 |
TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); static struct attribute *tune_attrs[] = { |
b3b94faa5 [GFS2] The core o... |
543 544 |
&tune_attr_quota_warn_period.attr, &tune_attr_quota_quantum.attr, |
b3b94faa5 [GFS2] The core o... |
545 546 |
&tune_attr_max_readahead.attr, &tune_attr_complain_secs.attr, |
b3b94faa5 [GFS2] The core o... |
547 548 |
&tune_attr_statfs_slow.attr, &tune_attr_quota_simul_sync.attr, |
b3b94faa5 [GFS2] The core o... |
549 |
&tune_attr_statfs_quantum.attr, |
b3b94faa5 [GFS2] The core o... |
550 551 |
&tune_attr_quota_scale.attr, &tune_attr_new_files_jdata.attr, |
ea67eedb2 [GFS2] Fix end of... |
552 |
NULL, |
b3b94faa5 [GFS2] The core o... |
553 |
}; |
b3b94faa5 [GFS2] The core o... |
554 555 |
static struct attribute_group tune_group = { .name = "tune", |
ea67eedb2 [GFS2] Fix end of... |
556 |
.attrs = tune_attrs, |
b3b94faa5 [GFS2] The core o... |
557 |
}; |
f057f6cdf GFS2: Merge lock_... |
558 559 560 561 |
static struct attribute_group lock_module_group = { .name = "lock_module", .attrs = lock_module_attrs, }; |
b3b94faa5 [GFS2] The core o... |
562 563 |
int gfs2_sys_fs_add(struct gfs2_sbd *sdp) { |
440d6da20 GFS2: Add some mo... |
564 |
struct super_block *sb = sdp->sd_vfs; |
b3b94faa5 [GFS2] The core o... |
565 |
int error; |
440d6da20 GFS2: Add some mo... |
566 567 568 569 570 571 |
char ro[20]; char spectator[20]; char *envp[] = { ro, spectator, NULL }; sprintf(ro, "RDONLY=%d", (sb->s_flags & MS_RDONLY) ? 1 : 0); sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); |
b3b94faa5 [GFS2] The core o... |
572 |
|
9bec101a0 kset: convert gfs... |
573 |
sdp->sd_kobj.kset = gfs2_kset; |
901195ed7 Kobject: change G... |
574 575 |
error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL, "%s", sdp->sd_table_name); |
b3b94faa5 [GFS2] The core o... |
576 577 |
if (error) goto fail; |
b3b94faa5 [GFS2] The core o... |
578 579 |
error = sysfs_create_group(&sdp->sd_kobj, &tune_group); if (error) |
f6eb53498 GFS2: Remove args... |
580 |
goto fail_reg; |
b3b94faa5 [GFS2] The core o... |
581 |
|
f057f6cdf GFS2: Merge lock_... |
582 583 584 |
error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group); if (error) goto fail_tune; |
31e54b01f GFS2: Add sysfs l... |
585 586 587 588 589 |
error = sysfs_create_link(&sdp->sd_kobj, &disk_to_dev(sb->s_bdev->bd_disk)->kobj, "device"); if (error) goto fail_lock_module; |
440d6da20 GFS2: Add some mo... |
590 |
kobject_uevent_env(&sdp->sd_kobj, KOBJ_ADD, envp); |
b3b94faa5 [GFS2] The core o... |
591 |
return 0; |
31e54b01f GFS2: Add sysfs l... |
592 593 |
fail_lock_module: sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); |
f057f6cdf GFS2: Merge lock_... |
594 595 |
fail_tune: sysfs_remove_group(&sdp->sd_kobj, &tune_group); |
a91ea69ff [GFS2] Align all ... |
596 |
fail_reg: |
197b12d67 Kobject: convert ... |
597 |
kobject_put(&sdp->sd_kobj); |
a91ea69ff [GFS2] Align all ... |
598 |
fail: |
65952fb4e [GFS2] print moun... |
599 |
fs_err(sdp, "error %d adding sysfs files", error); |
b3b94faa5 [GFS2] The core o... |
600 601 602 603 604 |
return error; } void gfs2_sys_fs_del(struct gfs2_sbd *sdp) { |
31e54b01f GFS2: Add sysfs l... |
605 |
sysfs_remove_link(&sdp->sd_kobj, "device"); |
b3b94faa5 [GFS2] The core o... |
606 |
sysfs_remove_group(&sdp->sd_kobj, &tune_group); |
f057f6cdf GFS2: Merge lock_... |
607 |
sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); |
197b12d67 Kobject: convert ... |
608 |
kobject_put(&sdp->sd_kobj); |
b3b94faa5 [GFS2] The core o... |
609 |
} |
fdd1062eb GFS2: Send some s... |
610 611 612 613 |
static int gfs2_uevent(struct kset *kset, struct kobject *kobj, struct kobj_uevent_env *env) { struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); |
32e471ef1 GFS2: Use UUID fi... |
614 615 |
struct super_block *s = sdp->sd_vfs; const u8 *uuid = s->s_uuid; |
02e3cc70e GFS2: Expose UUID... |
616 |
|
fdd1062eb GFS2: Send some s... |
617 618 |
add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name); add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name); |
ba6e93645 GFS2: Wait for jo... |
619 |
if (!test_bit(SDF_NOJOURNALID, &sdp->sd_flags)) |
feb47ca93 GFS2: Improve jou... |
620 |
add_uevent_var(env, "JOURNALID=%d", sdp->sd_lockstruct.ls_jid); |
f0b34ae63 fs/gfs2/sys.c: us... |
621 622 |
if (gfs2_uuid_valid(uuid)) add_uevent_var(env, "UUID=%pUB", uuid); |
fdd1062eb GFS2: Send some s... |
623 624 |
return 0; } |
9cd43611c kobject: Constify... |
625 |
static const struct kset_uevent_ops gfs2_uevent_ops = { |
fdd1062eb GFS2: Send some s... |
626 627 |
.uevent = gfs2_uevent, }; |
b3b94faa5 [GFS2] The core o... |
628 629 |
int gfs2_sys_init(void) { |
fdd1062eb GFS2: Send some s... |
630 |
gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj); |
9bec101a0 kset: convert gfs... |
631 632 633 |
if (!gfs2_kset) return -ENOMEM; return 0; |
b3b94faa5 [GFS2] The core o... |
634 635 636 637 |
} void gfs2_sys_uninit(void) { |
9bec101a0 kset: convert gfs... |
638 |
kset_unregister(gfs2_kset); |
b3b94faa5 [GFS2] The core o... |
639 |
} |