fs/gfs2/sys.c

   1 /*
   2  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
   3  * Copyright (C) 2004-2005 Red Hat, Inc.  All rights reserved.
   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
   7  * of the GNU General Public License v.2.
   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>
  17 #include <asm/semaphore.h>
  18 #include <asm/uaccess.h>
  19
  20 #include "gfs2.h"
  21 #include "lm.h"
  22 #include "sys.h"
  23 #include "super.h"
  24 #include "glock.h"
  25 #include "quota.h"
  26
  27 char *gfs2_sys_margs;
  28 spinlock_t gfs2_sys_margs_lock;
  29
  30 static ssize_t id_show(struct gfs2_sbd *sdp, char *buf)
  31 {
  32         return sprintf(buf, "%s\n", sdp->sd_vfs->s_id);
  33 }
  34
  35 static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf)
  36 {
  37         return sprintf(buf, "%s\n", sdp->sd_fsname);
  38 }
  39
  40 static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf)
  41 {
  42         unsigned int count;
  43
  44         mutex_lock(&sdp->sd_freeze_lock);
  45         count = sdp->sd_freeze_count;
  46         mutex_unlock(&sdp->sd_freeze_lock);
  47
  48         return sprintf(buf, "%u\n", count);
  49 }
  50
  51 static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
  52 {
  53         ssize_t ret = len;
  54         int error = 0;
  55         int n = simple_strtol(buf, NULL, 0);
  56
  57         if (!capable(CAP_SYS_ADMIN))
  58                 return -EACCES;
  59
  60         switch (n) {
  61         case 0:
  62                 gfs2_unfreeze_fs(sdp);
  63                 break;
  64         case 1:
  65                 error = gfs2_freeze_fs(sdp);
  66                 break;
  67         default:
  68                 ret = -EINVAL;
  69         }
  70
  71         if (error)
  72                 fs_warn(sdp, "freeze %d error %d", n, error);
  73
  74         return ret;
  75 }
  76
  77 static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf)
  78 {
  79         unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags);
  80         return sprintf(buf, "%u\n", b);
  81 }
  82
  83 static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
  84 {
  85         if (!capable(CAP_SYS_ADMIN))
  86                 return -EACCES;
  87
  88         if (simple_strtol(buf, NULL, 0) != 1)
  89                 return -EINVAL;
  90
  91         gfs2_lm_withdraw(sdp,
  92                 "GFS2: fsid=%s: withdrawing from cluster at user's request\n",
  93                 sdp->sd_fsname);
  94         return len;
  95 }
  96
  97 static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf,
  98                                  size_t len)
  99 {
 100         if (!capable(CAP_SYS_ADMIN))
 101                 return -EACCES;
 102
 103         if (simple_strtol(buf, NULL, 0) != 1)
 104                 return -EINVAL;
 105
 106         gfs2_statfs_sync(sdp);
 107         return len;
 108 }
 109
 110 static ssize_t shrink_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
 111 {
 112         if (!capable(CAP_SYS_ADMIN))
 113                 return -EACCES;
 114
 115         if (simple_strtol(buf, NULL, 0) != 1)
 116                 return -EINVAL;
 117
 118         gfs2_gl_hash_clear(sdp, NO_WAIT);
 119         return len;
 120 }
 121
 122 static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf,
 123                                 size_t len)
 124 {
 125         if (!capable(CAP_SYS_ADMIN))
 126                 return -EACCES;
 127
 128         if (simple_strtol(buf, NULL, 0) != 1)
 129                 return -EINVAL;
 130
 131         gfs2_quota_sync(sdp);
 132         return len;
 133 }
 134
 135 static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf,
 136                                         size_t len)
 137 {
 138         uint32_t id;
 139
 140         if (!capable(CAP_SYS_ADMIN))
 141                 return -EACCES;
 142
 143         id = simple_strtoul(buf, NULL, 0);
 144
 145         gfs2_quota_refresh(sdp, 1, id);
 146         return len;
 147 }
 148
 149 static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf,
 150                                          size_t len)
 151 {
 152         uint32_t id;
 153
 154         if (!capable(CAP_SYS_ADMIN))
 155                 return -EACCES;
 156
 157         id = simple_strtoul(buf, NULL, 0);
 158
 159         gfs2_quota_refresh(sdp, 0, id);
 160         return len;
 161 }
 162
 163 struct gfs2_attr {
 164         struct attribute attr;
 165         ssize_t (*show)(struct gfs2_sbd *, char *);
 166         ssize_t (*store)(struct gfs2_sbd *, const char *, size_t);
 167 };
 168
 169 #define GFS2_ATTR(name, mode, show, store) \
 170 static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store)
 171
 172 GFS2_ATTR(id,                  0444, id_show,       NULL);
 173 GFS2_ATTR(fsname,              0444, fsname_show,   NULL);
 174 GFS2_ATTR(freeze,              0644, freeze_show,   freeze_store);
 175 GFS2_ATTR(shrink,              0200, NULL,          shrink_store);
 176 GFS2_ATTR(withdraw,            0644, withdraw_show, withdraw_store);
 177 GFS2_ATTR(statfs_sync,         0200, NULL,          statfs_sync_store);
 178 GFS2_ATTR(quota_sync,          0200, NULL,          quota_sync_store);
 179 GFS2_ATTR(quota_refresh_user,  0200, NULL,          quota_refresh_user_store);
 180 GFS2_ATTR(quota_refresh_group, 0200, NULL,          quota_refresh_group_store);
 181
 182 static struct attribute *gfs2_attrs[] = {
 183         &gfs2_attr_id.attr,
 184         &gfs2_attr_fsname.attr,
 185         &gfs2_attr_freeze.attr,
 186         &gfs2_attr_shrink.attr,
 187         &gfs2_attr_withdraw.attr,
 188         &gfs2_attr_statfs_sync.attr,
 189         &gfs2_attr_quota_sync.attr,
 190         &gfs2_attr_quota_refresh_user.attr,
 191         &gfs2_attr_quota_refresh_group.attr,
 192         NULL,
 193 };
 194
 195 static ssize_t gfs2_attr_show(struct kobject *kobj, struct attribute *attr,
 196                               char *buf)
 197 {
 198         struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
 199         struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr);
 200         return a->show ? a->show(sdp, buf) : 0;
 201 }
 202
 203 static ssize_t gfs2_attr_store(struct kobject *kobj, struct attribute *attr,
 204                                const char *buf, size_t len)
 205 {
 206         struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
 207         struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr);
 208         return a->store ? a->store(sdp, buf, len) : len;
 209 }
 210
 211 static struct sysfs_ops gfs2_attr_ops = {
 212         .show  = gfs2_attr_show,
 213         .store = gfs2_attr_store,
 214 };
 215
 216 static struct kobj_type gfs2_ktype = {
 217         .default_attrs = gfs2_attrs,
 218         .sysfs_ops     = &gfs2_attr_ops,
 219 };
 220
 221 static struct kset gfs2_kset = {
 222         .subsys = &fs_subsys,
 223         .kobj   = {.name = "gfs2",},
 224         .ktype  = &gfs2_ktype,
 225 };
 226
 227 /*
 228  * display struct lm_lockstruct fields
 229  */
 230
 231 struct lockstruct_attr {
 232         struct attribute attr;
 233         ssize_t (*show)(struct gfs2_sbd *, char *);
 234 };
 235
 236 #define LOCKSTRUCT_ATTR(name, fmt)                                          \
 237 static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf)                 \
 238 {                                                                           \
 239         return sprintf(buf, fmt, sdp->sd_lockstruct.ls_##name);             \
 240 }                                                                           \
 241 static struct lockstruct_attr lockstruct_attr_##name = __ATTR_RO(name)
 242
 243 LOCKSTRUCT_ATTR(jid,      "%u\n");
 244 LOCKSTRUCT_ATTR(first,    "%u\n");
 245 LOCKSTRUCT_ATTR(lvb_size, "%u\n");
 246 LOCKSTRUCT_ATTR(flags,    "%d\n");
 247
 248 static struct attribute *lockstruct_attrs[] = {
 249         &lockstruct_attr_jid.attr,
 250         &lockstruct_attr_first.attr,
 251         &lockstruct_attr_lvb_size.attr,
 252         &lockstruct_attr_flags.attr,
 253         NULL
 254 };
 255
 256 /*
 257  * display struct gfs2_args fields
 258  */
 259
 260 struct args_attr {
 261         struct attribute attr;
 262         ssize_t (*show)(struct gfs2_sbd *, char *);
 263 };
 264
 265 #define ARGS_ATTR(name, fmt)                                                \
 266 static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf)                 \
 267 {                                                                           \
 268         return sprintf(buf, fmt, sdp->sd_args.ar_##name);                   \
 269 }                                                                           \
 270 static struct args_attr args_attr_##name = __ATTR_RO(name)
 271
 272 ARGS_ATTR(lockproto,       "%s\n");
 273 ARGS_ATTR(locktable,       "%s\n");
 274 ARGS_ATTR(hostdata,        "%s\n");
 275 ARGS_ATTR(spectator,       "%d\n");
 276 ARGS_ATTR(ignore_local_fs, "%d\n");
 277 ARGS_ATTR(localcaching,    "%d\n");
 278 ARGS_ATTR(localflocks,     "%d\n");
 279 ARGS_ATTR(debug,           "%d\n");
 280 ARGS_ATTR(upgrade,         "%d\n");
 281 ARGS_ATTR(num_glockd,      "%u\n");
 282 ARGS_ATTR(posix_acl,       "%d\n");
 283 ARGS_ATTR(quota,           "%u\n");
 284 ARGS_ATTR(suiddir,         "%d\n");
 285 ARGS_ATTR(data,            "%d\n");
 286
 287 /* one oddball doesn't fit the macro mold */
 288 static ssize_t noatime_show(struct gfs2_sbd *sdp, char *buf)
 289 {
 290         return sprintf(buf, "%d\n", !!test_bit(SDF_NOATIME, &sdp->sd_flags));
 291 }
 292 static struct args_attr args_attr_noatime = __ATTR_RO(noatime);
 293
 294 static struct attribute *args_attrs[] = {
 295         &args_attr_lockproto.attr,
 296         &args_attr_locktable.attr,
 297         &args_attr_hostdata.attr,
 298         &args_attr_spectator.attr,
 299         &args_attr_ignore_local_fs.attr,
 300         &args_attr_localcaching.attr,
 301         &args_attr_localflocks.attr,
 302         &args_attr_debug.attr,
 303         &args_attr_upgrade.attr,
 304         &args_attr_num_glockd.attr,
 305         &args_attr_posix_acl.attr,
 306         &args_attr_quota.attr,
 307         &args_attr_suiddir.attr,
 308         &args_attr_data.attr,
 309         &args_attr_noatime.attr,
 310         NULL
 311 };
 312
 313 /*
 314  * display counters from superblock
 315  */
 316
 317 struct counters_attr {
 318         struct attribute attr;
 319         ssize_t (*show)(struct gfs2_sbd *, char *);
 320 };
 321
 322 #define COUNTERS_ATTR_GENERAL(name, fmt, val)                               \
 323 static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf)                 \
 324 {                                                                           \
 325         return sprintf(buf, fmt, val);                                      \
 326 }                                                                           \
 327 static struct counters_attr counters_attr_##name = __ATTR_RO(name)
 328
 329 #define COUNTERS_ATTR_SIMPLE(name, fmt) \
 330         COUNTERS_ATTR_GENERAL(name, fmt, sdp->sd_##name)
 331
 332 #define COUNTERS_ATTR_ATOMIC(name, fmt) \
 333         COUNTERS_ATTR_GENERAL(name, fmt, (unsigned int)atomic_read(&sdp->sd_##name))
 334
 335 COUNTERS_ATTR_ATOMIC(glock_count,          "%u\n");
 336 COUNTERS_ATTR_ATOMIC(glock_held_count,     "%u\n");
 337 COUNTERS_ATTR_ATOMIC(inode_count,          "%u\n");
 338 COUNTERS_ATTR_ATOMIC(bufdata_count,        "%u\n");
 339 COUNTERS_ATTR_ATOMIC(unlinked_count,       "%u\n");
 340 COUNTERS_ATTR_ATOMIC(quota_count,          "%u\n");
 341 COUNTERS_ATTR_SIMPLE(log_num_gl,           "%u\n");
 342 COUNTERS_ATTR_SIMPLE(log_num_buf,          "%u\n");
 343 COUNTERS_ATTR_SIMPLE(log_num_revoke,       "%u\n");
 344 COUNTERS_ATTR_SIMPLE(log_num_rg,           "%u\n");
 345 COUNTERS_ATTR_SIMPLE(log_num_databuf,      "%u\n");
 346 COUNTERS_ATTR_SIMPLE(log_blks_free,        "%u\n");
 347 COUNTERS_ATTR_GENERAL(jd_blocks,           "%u\n", sdp->sd_jdesc->jd_blocks);
 348 COUNTERS_ATTR_ATOMIC(reclaim_count,        "%u\n");
 349 COUNTERS_ATTR_SIMPLE(log_wraps,            "%llu\n");
 350 COUNTERS_ATTR_ATOMIC(fh2dentry_misses,     "%u\n");
 351 COUNTERS_ATTR_ATOMIC(reclaimed,            "%u\n");
 352 COUNTERS_ATTR_ATOMIC(log_flush_incore,     "%u\n");
 353 COUNTERS_ATTR_ATOMIC(log_flush_ondisk,     "%u\n");
 354 COUNTERS_ATTR_ATOMIC(glock_nq_calls,       "%u\n");
 355 COUNTERS_ATTR_ATOMIC(glock_dq_calls,       "%u\n");
 356 COUNTERS_ATTR_ATOMIC(glock_prefetch_calls, "%u\n");
 357 COUNTERS_ATTR_ATOMIC(lm_lock_calls,        "%u\n");
 358 COUNTERS_ATTR_ATOMIC(lm_unlock_calls,      "%u\n");
 359 COUNTERS_ATTR_ATOMIC(lm_callbacks,         "%u\n");
 360 COUNTERS_ATTR_ATOMIC(ops_address,          "%u\n");
 361 COUNTERS_ATTR_ATOMIC(ops_dentry,           "%u\n");
 362 COUNTERS_ATTR_ATOMIC(ops_export,           "%u\n");
 363 COUNTERS_ATTR_ATOMIC(ops_file,             "%u\n");
 364 COUNTERS_ATTR_ATOMIC(ops_inode,            "%u\n");
 365 COUNTERS_ATTR_ATOMIC(ops_super,            "%u\n");
 366 COUNTERS_ATTR_ATOMIC(ops_vm,               "%u\n");
 367
 368 static struct attribute *counters_attrs[] = {
 369         &counters_attr_glock_count.attr,
 370         &counters_attr_glock_held_count.attr,
 371         &counters_attr_inode_count.attr,
 372         &counters_attr_bufdata_count.attr,
 373         &counters_attr_unlinked_count.attr,
 374         &counters_attr_quota_count.attr,
 375         &counters_attr_log_num_gl.attr,
 376         &counters_attr_log_num_buf.attr,
 377         &counters_attr_log_num_revoke.attr,
 378         &counters_attr_log_num_rg.attr,
 379         &counters_attr_log_num_databuf.attr,
 380         &counters_attr_log_blks_free.attr,
 381         &counters_attr_jd_blocks.attr,
 382         &counters_attr_reclaim_count.attr,
 383         &counters_attr_log_wraps.attr,
 384         &counters_attr_fh2dentry_misses.attr,
 385         &counters_attr_reclaimed.attr,
 386         &counters_attr_log_flush_incore.attr,
 387         &counters_attr_log_flush_ondisk.attr,
 388         &counters_attr_glock_nq_calls.attr,
 389         &counters_attr_glock_dq_calls.attr,
 390         &counters_attr_glock_prefetch_calls.attr,
 391         &counters_attr_lm_lock_calls.attr,
 392         &counters_attr_lm_unlock_calls.attr,
 393         &counters_attr_lm_callbacks.attr,
 394         &counters_attr_ops_address.attr,
 395         &counters_attr_ops_dentry.attr,
 396         &counters_attr_ops_export.attr,
 397         &counters_attr_ops_file.attr,
 398         &counters_attr_ops_inode.attr,
 399         &counters_attr_ops_super.attr,
 400         &counters_attr_ops_vm.attr,
 401         NULL
 402 };
 403
 404 /*
 405  * get and set struct gfs2_tune fields
 406  */
 407
 408 static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf)
 409 {
 410         return sprintf(buf, "%u %u\n", sdp->sd_tune.gt_quota_scale_num,
 411                                        sdp->sd_tune.gt_quota_scale_den);
 412 }
 413
 414 static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf,
 415                                  size_t len)
 416 {
 417         struct gfs2_tune *gt = &sdp->sd_tune;
 418         unsigned int x, y;
 419
 420         if (!capable(CAP_SYS_ADMIN))
 421                 return -EACCES;
 422
 423         if (sscanf(buf, "%u %u", &x, &y) != 2 || !y)
 424                 return -EINVAL;
 425
 426         spin_lock(&gt->gt_spin);
 427         gt->gt_quota_scale_num = x;
 428         gt->gt_quota_scale_den = y;
 429         spin_unlock(&gt->gt_spin);
 430         return len;
 431 }
 432
 433 static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field,
 434                         int check_zero, const char *buf, size_t len)
 435 {
 436         struct gfs2_tune *gt = &sdp->sd_tune;
 437         unsigned int x;
 438
 439         if (!capable(CAP_SYS_ADMIN))
 440                 return -EACCES;
 441
 442         x = simple_strtoul(buf, NULL, 0);
 443
 444         if (check_zero && !x)
 445                 return -EINVAL;
 446
 447         spin_lock(&gt->gt_spin);
 448         *field = x;
 449         spin_unlock(&gt->gt_spin);
 450         return len;
 451 }
 452
 453 struct tune_attr {
 454         struct attribute attr;
 455         ssize_t (*show)(struct gfs2_sbd *, char *);
 456         ssize_t (*store)(struct gfs2_sbd *, const char *, size_t);
 457 };
 458
 459 #define TUNE_ATTR_3(name, show, store)                                        \
 460 static struct tune_attr tune_attr_##name = __ATTR(name, 0644, show, store)
 461
 462 #define TUNE_ATTR_2(name, store)                                              \
 463 static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf)                   \
 464 {                                                                             \
 465         return sprintf(buf, "%u\n", sdp->sd_tune.gt_##name);                  \
 466 }                                                                             \
 467 TUNE_ATTR_3(name, name##_show, store)
 468
 469 #define TUNE_ATTR(name, check_zero)                                           \
 470 static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\
 471 {                                                                             \
 472         return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len);  \
 473 }                                                                             \
 474 TUNE_ATTR_2(name, name##_store)
 475
 476 #define TUNE_ATTR_DAEMON(name, process)                                       \
 477 static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\
 478 {                                                                             \
 479         ssize_t r = tune_set(sdp, &sdp->sd_tune.gt_##name, 1, buf, len);      \
 480         wake_up_process(sdp->sd_##process);                                   \
 481         return r;                                                             \
 482 }                                                                             \
 483 TUNE_ATTR_2(name, name##_store)
 484
 485 TUNE_ATTR(ilimit, 0);
 486 TUNE_ATTR(ilimit_tries, 0);
 487 TUNE_ATTR(ilimit_min, 0);
 488 TUNE_ATTR(demote_secs, 0);
 489 TUNE_ATTR(incore_log_blocks, 0);
 490 TUNE_ATTR(log_flush_secs, 0);
 491 TUNE_ATTR(jindex_refresh_secs, 0);
 492 TUNE_ATTR(quota_warn_period, 0);
 493 TUNE_ATTR(quota_quantum, 0);
 494 TUNE_ATTR(atime_quantum, 0);
 495 TUNE_ATTR(max_readahead, 0);
 496 TUNE_ATTR(complain_secs, 0);
 497 TUNE_ATTR(reclaim_limit, 0);
 498 TUNE_ATTR(prefetch_secs, 0);
 499 TUNE_ATTR(statfs_slow, 0);
 500 TUNE_ATTR(new_files_jdata, 0);
 501 TUNE_ATTR(new_files_directio, 0);
 502 TUNE_ATTR(quota_simul_sync, 1);
 503 TUNE_ATTR(quota_cache_secs, 1);
 504 TUNE_ATTR(max_atomic_write, 1);
 505 TUNE_ATTR(stall_secs, 1);
 506 TUNE_ATTR(entries_per_readdir, 1);
 507 TUNE_ATTR(greedy_default, 1);
 508 TUNE_ATTR(greedy_quantum, 1);
 509 TUNE_ATTR(greedy_max, 1);
 510 TUNE_ATTR(statfs_quantum, 1);
 511 TUNE_ATTR_DAEMON(scand_secs, scand_process);
 512 TUNE_ATTR_DAEMON(recoverd_secs, recoverd_process);
 513 TUNE_ATTR_DAEMON(logd_secs, logd_process);
 514 TUNE_ATTR_DAEMON(quotad_secs, quotad_process);
 515 TUNE_ATTR_DAEMON(inoded_secs, inoded_process);
 516 TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store);
 517
 518 static struct attribute *tune_attrs[] = {
 519         &tune_attr_ilimit.attr,
 520         &tune_attr_ilimit_tries.attr,
 521         &tune_attr_ilimit_min.attr,
 522         &tune_attr_demote_secs.attr,
 523         &tune_attr_incore_log_blocks.attr,
 524         &tune_attr_log_flush_secs.attr,
 525         &tune_attr_jindex_refresh_secs.attr,
 526         &tune_attr_quota_warn_period.attr,
 527         &tune_attr_quota_quantum.attr,
 528         &tune_attr_atime_quantum.attr,
 529         &tune_attr_max_readahead.attr,
 530         &tune_attr_complain_secs.attr,
 531         &tune_attr_reclaim_limit.attr,
 532         &tune_attr_prefetch_secs.attr,
 533         &tune_attr_statfs_slow.attr,
 534         &tune_attr_quota_simul_sync.attr,
 535         &tune_attr_quota_cache_secs.attr,
 536         &tune_attr_max_atomic_write.attr,
 537         &tune_attr_stall_secs.attr,
 538         &tune_attr_entries_per_readdir.attr,
 539         &tune_attr_greedy_default.attr,
 540         &tune_attr_greedy_quantum.attr,
 541         &tune_attr_greedy_max.attr,
 542         &tune_attr_statfs_quantum.attr,
 543         &tune_attr_scand_secs.attr,
 544         &tune_attr_recoverd_secs.attr,
 545         &tune_attr_logd_secs.attr,
 546         &tune_attr_quotad_secs.attr,
 547         &tune_attr_inoded_secs.attr,
 548         &tune_attr_quota_scale.attr,
 549         &tune_attr_new_files_jdata.attr,
 550         &tune_attr_new_files_directio.attr,
 551         NULL
 552 };
 553
 554 static struct attribute_group lockstruct_group = {
 555         .name = "lockstruct",
 556         .attrs = lockstruct_attrs
 557 };
 558
 559 static struct attribute_group counters_group = {
 560         .name = "counters",
 561         .attrs = counters_attrs
 562 };
 563
 564 static struct attribute_group args_group = {
 565         .name = "args",
 566         .attrs = args_attrs
 567 };
 568
 569 static struct attribute_group tune_group = {
 570         .name = "tune",
 571         .attrs = tune_attrs
 572 };
 573
 574 int gfs2_sys_fs_add(struct gfs2_sbd *sdp)
 575 {
 576         int error;
 577
 578         sdp->sd_kobj.kset = &gfs2_kset;
 579         sdp->sd_kobj.ktype = &gfs2_ktype;
 580
 581         error = kobject_set_name(&sdp->sd_kobj, "%s", sdp->sd_table_name);
 582         if (error)
 583                 goto fail;
 584
 585         error = kobject_register(&sdp->sd_kobj);
 586         if (error)
 587                 goto fail;
 588
 589         error = sysfs_create_group(&sdp->sd_kobj, &lockstruct_group);
 590         if (error)
 591                 goto fail_reg;
 592
 593         error = sysfs_create_group(&sdp->sd_kobj, &counters_group);
 594         if (error)
 595                 goto fail_lockstruct;
 596
 597         error = sysfs_create_group(&sdp->sd_kobj, &args_group);
 598         if (error)
 599                 goto fail_counters;
 600
 601         error = sysfs_create_group(&sdp->sd_kobj, &tune_group);
 602         if (error)
 603                 goto fail_args;
 604
 605         return 0;
 606
 607  fail_args:
 608         sysfs_remove_group(&sdp->sd_kobj, &args_group);
 609  fail_counters:
 610         sysfs_remove_group(&sdp->sd_kobj, &counters_group);
 611  fail_lockstruct:
 612         sysfs_remove_group(&sdp->sd_kobj, &lockstruct_group);
 613  fail_reg:
 614         kobject_unregister(&sdp->sd_kobj);
 615  fail:
 616         return error;
 617 }
 618
 619 void gfs2_sys_fs_del(struct gfs2_sbd *sdp)
 620 {
 621         sysfs_remove_group(&sdp->sd_kobj, &tune_group);
 622         sysfs_remove_group(&sdp->sd_kobj, &args_group);
 623         sysfs_remove_group(&sdp->sd_kobj, &counters_group);
 624         sysfs_remove_group(&sdp->sd_kobj, &lockstruct_group);
 625         kobject_unregister(&sdp->sd_kobj);
 626 }
 627
 628 int gfs2_sys_init(void)
 629 {
 630         gfs2_sys_margs = NULL;
 631         spin_lock_init(&gfs2_sys_margs_lock);
 632         return kset_register(&gfs2_kset);
 633 }
 634
 635 void gfs2_sys_uninit(void)
 636 {
 637         kfree(gfs2_sys_margs);
 638         kset_unregister(&gfs2_kset);
 639 }
 640