lustre/quota/quota_interface.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  lustre/quota/quota_interface.c
   5  *
   6  *  Copyright (c) 2001-2005 Cluster File Systems, Inc.
   7  *
   8  *   This file is part of Lustre, http://www.lustre.org.
   9  *
  10  *   No redistribution or use is permitted outside of Cluster File Systems, Inc.
  11  *
  12  */
  13 #ifndef EXPORT_SYMTAB
  14 # define EXPORT_SYMTAB
  15 #endif
  16 #define DEBUG_SUBSYSTEM S_MDS
  17
  18 #ifdef __KERNEL__
  19 # include <linux/version.h>
  20 # include <linux/module.h>
  21 # include <linux/init.h>
  22 # include <linux/fs.h>
  23 # include <linux/jbd.h>
  24 # include <linux/ext3_fs.h>
  25 # include <linux/parser.h>
  26 # if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
  27 #  include <linux/smp_lock.h>
  28 #  include <linux/buffer_head.h>
  29 #  include <linux/workqueue.h>
  30 #  include <linux/mount.h>
  31 # else
  32 #  include <linux/locks.h>
  33 # endif
  34 #else /* __KERNEL__ */
  35 # include <liblustre.h>
  36 #endif
  37
  38 #include <obd_class.h>
  39 #include <lustre_mds.h>
  40 #include <lustre_dlm.h>
  41 #include <lustre_cfg.h>
  42 #include <obd_ost.h>
  43 #include <lustre_fsfilt.h>
  44 #include <lustre_quota.h>
  45 #include "quota_internal.h"
  46
  47
  48 #ifdef __KERNEL__
  49 extern unsigned long default_bunit_sz;
  50 extern unsigned long default_btune_ratio;
  51 extern unsigned long default_iunit_sz;
  52 extern unsigned long default_itune_ratio;
  53
  54 enum {
  55         Opt_quotaon, Opt_iunit_sz, Opt_bunit_sz,
  56         Opt_itune_ratio, Opt_btune_ratio, Opt_err,
  57 };
  58
  59 static match_table_t tokens = {
  60         {Opt_quotaon, "quotaon=%10s"},
  61         {Opt_iunit_sz, "iunit=%u"},
  62         {Opt_bunit_sz, "bunit=%u"},
  63         {Opt_itune_ratio, "itune=%u"},
  64         {Opt_btune_ratio, "btune=%u"},
  65         {Opt_err, NULL}
  66 };
  67
  68 static int
  69 quota_parse_config_args(char *options, int *quotaon, int *type,
  70                         struct lustre_quota_ctxt *qctxt)
  71 {
  72         char *opt;
  73         substring_t args[MAX_OPT_ARGS];
  74         int option;
  75         int rc = 0;
  76         unsigned long iunit = 0, bunit = 0, itune = 0, btune = 0;
  77         ENTRY;
  78
  79         while ((opt = strsep (&options, ",")) != NULL) {
  80                 int token;
  81                 if (!*opt)
  82                         continue;
  83
  84                 token = match_token(opt, tokens, args);
  85                 switch(token) {
  86                 case Opt_quotaon: {
  87                         char *quota_type = match_strdup(&args[0]);
  88                         if (!quota_type)
  89                                 GOTO(out, rc = -EINVAL);
  90
  91                         *quotaon = 1;
  92                         if (strchr(quota_type, 'u') && strchr(quota_type, 'g'))
  93                                 *type = UGQUOTA;
  94                         else if (strchr(quota_type, 'u'))
  95                                 *type = USRQUOTA;
  96                         else if (strchr(quota_type, 'g'))
  97                                 *type = GRPQUOTA;
  98                         else {
  99                                 *quotaon = 0;
 100                                 rc = -EINVAL;
 101                         }
 102                         break;
 103                 }
 104                 case Opt_iunit_sz:
 105                         if (match_int(&args[0], &option))
 106                                 rc = -EINVAL;
 107                         iunit = option;
 108                         break;
 109                 case Opt_bunit_sz:
 110                         if (match_int(&args[0], &option))
 111                                 rc = -EINVAL;
 112                         bunit = option;
 113                         break;
 114                 case Opt_itune_ratio:
 115                         if (match_int(&args[0], &option) ||
 116                             option <= 0 || option >= 100)
 117                                 rc = -EINVAL;
 118                         itune = option;
 119                         break;
 120                 case Opt_btune_ratio:
 121                         if (match_int(&args[0], &option) ||
 122                             option <= 0 || option >= 100)
 123                                 rc = -EINVAL;
 124                         btune = option;
 125                         break;
 126                 default:
 127                         rc = -EINVAL;
 128                 }
 129
 130                 if (rc)
 131                         GOTO(out, rc);
 132         }
 133
 134         /* adjust the tunables of qunits based on quota config args */
 135         if (iunit)
 136                 qctxt->lqc_iunit_sz = iunit;
 137         if (itune)
 138                 qctxt->lqc_itune_sz = qctxt->lqc_iunit_sz *
 139                                       itune / 100;
 140         else
 141                 qctxt->lqc_itune_sz = qctxt->lqc_iunit_sz *
 142                                       default_itune_ratio / 100;
 143         if (bunit)
 144                 qctxt->lqc_bunit_sz = bunit << 20;
 145         if (btune)
 146                 qctxt->lqc_btune_sz = ((qctxt->lqc_bunit_sz >> 20) *
 147                                         btune / 100) << 20;
 148         else
 149                 qctxt->lqc_btune_sz = ((qctxt->lqc_bunit_sz >> 20) *
 150                                         default_btune_ratio / 100) << 20;
 151
 152         CDEBUG(D_INFO, "iunit=%lu bunit=%lu itune=%lu btune=%lu\n",
 153                qctxt->lqc_iunit_sz, qctxt->lqc_bunit_sz,
 154                qctxt->lqc_itune_sz, qctxt->lqc_btune_sz);
 155         EXIT;
 156
 157  out:
 158         if (rc)
 159                 CERROR("quota config args parse error!(rc = %d) usage: "
 160                 "--quota quotaon=u|g|ug,iunit=100,bunit=100,itune=50,btune=50\n",
 161                  rc);
 162
 163         return rc;
 164 }
 165
 166 static int auto_quota_on(struct obd_device *obd, int type,
 167                          struct super_block *sb, int is_master)
 168 {
 169         struct obd_quotactl *oqctl;
 170         struct lvfs_run_ctxt saved;
 171         int rc;
 172         ENTRY;
 173
 174         LASSERT(type == USRQUOTA || type == GRPQUOTA || type == UGQUOTA);
 175
 176         OBD_ALLOC_PTR(oqctl);
 177         if (!oqctl)
 178                 RETURN(-ENOMEM);
 179
 180         oqctl->qc_type = type;
 181         oqctl->qc_cmd = Q_QUOTAON;
 182         oqctl->qc_id = QFMT_LDISKFS;
 183
 184         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 185
 186         if (!is_master)
 187                 goto local_quota;
 188
 189         /* turn on cluster wide quota */
 190         rc = mds_admin_quota_on(obd, oqctl);
 191         if (rc) {
 192                 CERROR("auto enable admin quota error! err = %d\n", rc);
 193                 GOTO(out_pop, rc);
 194         }
 195 local_quota:
 196         /* turn on local quota */
 197         rc = fsfilt_quotactl(obd, sb, oqctl);
 198         CDEBUG_EX(rc ? D_ERROR : D_INFO, "auto-enable quota. rc=%d\n", rc);
 199         if (rc && is_master)
 200                 mds_quota_off(obd, oqctl);
 201 out_pop:
 202         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 203
 204         OBD_FREE_PTR(oqctl);
 205         RETURN(rc);
 206 }
 207
 208 static int mds_auto_quota_on(struct obd_device *obd, int type)
 209 {
 210         int rc;
 211         ENTRY;
 212         rc = auto_quota_on(obd, type, obd->u.obt.obt_sb, 1);
 213         RETURN(rc);
 214 }
 215
 216 static int filter_auto_quota_on(struct obd_device *obd, int type)
 217 {
 218         int rc = 0;
 219         ENTRY;
 220         rc = auto_quota_on(obd, type, obd->u.obt.obt_sb, 0);
 221         RETURN(rc);
 222 }
 223
 224 static int filter_quota_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
 225 {
 226         int rc = 0;
 227         struct obd_device_target *obt = &obd->u.obt;
 228         ENTRY;
 229
 230         atomic_set(&obt->obt_quotachecking, 1);
 231         rc = qctxt_init(&obt->obt_qctxt, obt->obt_sb, NULL);
 232         if (rc) {
 233                 CERROR("initialize quota context failed! (rc:%d)\n", rc);
 234                 RETURN(rc);
 235         }
 236
 237         /* Based on quota config args, set qunit sizes and enable quota */
 238         if (LUSTRE_CFG_BUFLEN(lcfg, 5) > 0 && lustre_cfg_buf(lcfg, 5)) {
 239                 char *args = lustre_cfg_string(lcfg, 5);
 240                 int quotaon = 0, type;
 241                 int err = 0;
 242
 243                 err = quota_parse_config_args(args, &quotaon, &type,
 244                                               &obd->u.obt.obt_qctxt);
 245                 if (!err && quotaon)
 246                         filter_auto_quota_on(obd, type);
 247         }
 248
 249         RETURN(rc);
 250 }
 251
 252 static int filter_quota_cleanup(struct obd_device *obd)
 253 {
 254         qctxt_cleanup(&obd->u.obt.obt_qctxt, 0);
 255         return 0;
 256 }
 257
 258 static int filter_quota_setinfo(struct obd_export *exp, struct obd_device *obd)
 259 {
 260         /* setup the quota context import */
 261         obd->u.obt.obt_qctxt.lqc_import = exp->exp_imp_reverse;
 262         /* start quota slave recovery thread. (release high limits) */
 263         qslave_start_recovery(obd, &obd->u.obt.obt_qctxt);
 264         return 0;
 265 }
 266 static int filter_quota_enforce(struct obd_device *obd, unsigned int ignore)
 267 {
 268         ENTRY;
 269
 270         if (!sb_any_quota_enabled(obd->u.obt.obt_sb))
 271                 RETURN(0);
 272
 273         if (ignore)
 274                 cap_raise(current->cap_effective, CAP_SYS_RESOURCE);
 275         else
 276                 cap_lower(current->cap_effective, CAP_SYS_RESOURCE);
 277
 278         RETURN(0);
 279 }
 280
 281 static int filter_quota_getflag(struct obd_device *obd, struct obdo *oa)
 282 {
 283         struct obd_device_target *obt = &obd->u.obt;
 284         int err, cnt, rc = 0;
 285         struct obd_quotactl *oqctl;
 286         ENTRY;
 287
 288         if (!sb_any_quota_enabled(obt->obt_sb))
 289                 RETURN(0);
 290
 291         oa->o_flags &= ~(OBD_FL_NO_USRQUOTA | OBD_FL_NO_GRPQUOTA);
 292
 293         OBD_ALLOC_PTR(oqctl);
 294         if (!oqctl) {
 295                 CERROR("Not enough memory!");
 296                 RETURN(-ENOMEM);
 297         }
 298
 299         for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
 300                 memset(oqctl, 0, sizeof(*oqctl));
 301
 302                 oqctl->qc_cmd = Q_GETQUOTA;
 303                 oqctl->qc_type = cnt;
 304                 oqctl->qc_id = (cnt == USRQUOTA) ? oa->o_uid : oa->o_gid;
 305                 err = fsfilt_quotactl(obd, obt->obt_sb, oqctl);
 306                 if (err) {
 307                         if (!rc)
 308                                 rc = err;
 309                         continue;
 310                 }
 311
 312                 /* set over quota flags for a uid/gid */
 313                 oa->o_valid |= (cnt == USRQUOTA) ?
 314                                OBD_MD_FLUSRQUOTA : OBD_MD_FLGRPQUOTA;
 315                 if (oqctl->qc_dqblk.dqb_bhardlimit &&
 316                    (toqb(oqctl->qc_dqblk.dqb_curspace) >
 317                     oqctl->qc_dqblk.dqb_bhardlimit))
 318                         oa->o_flags |= (cnt == USRQUOTA) ?
 319                                 OBD_FL_NO_USRQUOTA : OBD_FL_NO_GRPQUOTA;
 320         }
 321         OBD_FREE_PTR(oqctl);
 322         RETURN(rc);
 323 }
 324
 325 static int filter_quota_acquire(struct obd_device *obd, unsigned int uid,
 326                                 unsigned int gid)
 327 {
 328         struct lustre_quota_ctxt *qctxt = &obd->u.obt.obt_qctxt;
 329         int rc;
 330         ENTRY;
 331
 332         rc = qctxt_adjust_qunit(obd, qctxt, uid, gid, 1, 1);
 333         RETURN(rc == -EAGAIN);
 334 }
 335
 336 static int mds_quota_init(void)
 337 {
 338         return lustre_dquot_init();
 339 }
 340
 341 static int mds_quota_exit(void)
 342 {
 343         lustre_dquot_exit();
 344         return 0;
 345 }
 346
 347 static int mds_quota_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
 348 {
 349         struct obd_device_target *obt = &obd->u.obt;
 350         struct mds_obd *mds = &obd->u.mds;
 351         int rc;
 352         ENTRY;
 353
 354         atomic_set(&obt->obt_quotachecking, 1);
 355         /* initialize quota master and quota context */
 356         sema_init(&mds->mds_qonoff_sem, 1);
 357         rc = qctxt_init(&obt->obt_qctxt, obt->obt_sb, dqacq_handler);
 358         if (rc) {
 359                 CERROR("initialize quota context failed! (rc:%d)\n", rc);
 360                 RETURN(rc);
 361         }
 362
 363         /* Based on quota config args, set qunit sizes and enable quota */
 364         if (LUSTRE_CFG_BUFLEN(lcfg, 5) > 0 && lustre_cfg_buf(lcfg, 5)) {
 365                 char *args = lustre_cfg_string(lcfg, 5);
 366                 int quotaon = 0, type;
 367                 int err;
 368
 369                 err = quota_parse_config_args(args, &quotaon, &type,
 370                                               &obt->obt_qctxt);
 371                 if (!err && quotaon)
 372                         mds_auto_quota_on(obd, type);
 373         }
 374         RETURN(rc);
 375 }
 376
 377 static int mds_quota_cleanup(struct obd_device *obd)
 378 {
 379         qctxt_cleanup(&obd->u.obt.obt_qctxt, 0);
 380         RETURN(0);
 381 }
 382
 383 static int mds_quota_fs_cleanup(struct obd_device *obd)
 384 {
 385         struct mds_obd *mds = &obd->u.mds;
 386         int i;
 387         ENTRY;
 388
 389         /* close admin quota files */
 390         down(&mds->mds_qonoff_sem);
 391         for (i = 0; i < MAXQUOTAS; i++) {
 392                 if (mds->mds_quota_info.qi_files[i]) {
 393                         filp_close(mds->mds_quota_info.qi_files[i], 0);
 394                         mds->mds_quota_info.qi_files[i] = NULL;
 395                 }
 396         }
 397         up(&mds->mds_qonoff_sem);
 398         RETURN(0);
 399 }
 400 #endif /* __KERNEL__ */
 401
 402 struct osc_quota_info {
 403         struct list_head        oqi_hash;       /* hash list */
 404         struct client_obd      *oqi_cli;        /* osc obd */
 405         unsigned int            oqi_id;         /* uid/gid of a file */
 406         short                   oqi_type;       /* quota type */
 407 };
 408
 409 spinlock_t qinfo_list_lock = SPIN_LOCK_UNLOCKED;
 410
 411 static struct list_head qinfo_hash[NR_DQHASH];
 412 /* SLAB cache for client quota context */
 413 cfs_mem_cache_t *qinfo_cachep = NULL;
 414
 415 static inline int const hashfn(struct client_obd *cli,
 416                                unsigned long id,
 417                                int type)
 418 {
 419         unsigned long tmp = ((unsigned long)cli>>6) ^ id;
 420         tmp = (tmp * (MAXQUOTAS - type)) % NR_DQHASH;
 421         return tmp;
 422 }
 423
 424 /* caller must hold qinfo_list_lock */
 425 static inline void insert_qinfo_hash(struct osc_quota_info *oqi)
 426 {
 427         struct list_head *head = qinfo_hash +
 428                 hashfn(oqi->oqi_cli, oqi->oqi_id, oqi->oqi_type);
 429
 430         LASSERT_SPIN_LOCKED(&qinfo_list_lock);
 431         list_add(&oqi->oqi_hash, head);
 432 }
 433
 434 /* caller must hold qinfo_list_lock */
 435 static inline void remove_qinfo_hash(struct osc_quota_info *oqi)
 436 {
 437         LASSERT_SPIN_LOCKED(&qinfo_list_lock);
 438         list_del_init(&oqi->oqi_hash);
 439 }
 440
 441 /* caller must hold qinfo_list_lock */
 442 static inline struct osc_quota_info *find_qinfo(struct client_obd *cli,
 443                                                 unsigned int id, int type)
 444 {
 445         unsigned int hashent = hashfn(cli, id, type);
 446         struct osc_quota_info *oqi;
 447
 448         LASSERT_SPIN_LOCKED(&qinfo_list_lock);
 449         list_for_each_entry(oqi, &qinfo_hash[hashent], oqi_hash) {
 450                 if (oqi->oqi_cli == cli &&
 451                     oqi->oqi_id == id && oqi->oqi_type == type)
 452                         return oqi;
 453         }
 454         return NULL;
 455 }
 456
 457 static struct osc_quota_info *alloc_qinfo(struct client_obd *cli,
 458                                           unsigned int id, int type)
 459 {
 460         struct osc_quota_info *oqi;
 461         ENTRY;
 462
 463         OBD_SLAB_ALLOC(oqi, qinfo_cachep, CFS_ALLOC_STD, sizeof(*oqi));
 464         if(!oqi)
 465                 RETURN(NULL);
 466
 467         INIT_LIST_HEAD(&oqi->oqi_hash);
 468         oqi->oqi_cli = cli;
 469         oqi->oqi_id = id;
 470         oqi->oqi_type = type;
 471
 472         RETURN(oqi);
 473 }
 474
 475 static void free_qinfo(struct osc_quota_info *oqi)
 476 {
 477         OBD_SLAB_FREE(oqi, qinfo_cachep, sizeof(*oqi));
 478 }
 479
 480 int osc_quota_chkdq(struct client_obd *cli,
 481                     unsigned int uid, unsigned int gid)
 482 {
 483         unsigned int id;
 484         int cnt, rc = QUOTA_OK;
 485         ENTRY;
 486
 487         spin_lock(&qinfo_list_lock);
 488         for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
 489                 struct osc_quota_info *oqi = NULL;
 490
 491                 id = (cnt == USRQUOTA) ? uid : gid;
 492                 oqi = find_qinfo(cli, id, cnt);
 493                 if (oqi) {
 494                         rc = NO_QUOTA;
 495                         break;
 496                 }
 497         }
 498         spin_unlock(&qinfo_list_lock);
 499
 500         RETURN(rc);
 501 }
 502
 503 int osc_quota_setdq(struct client_obd *cli,
 504                     unsigned int uid, unsigned int gid,
 505                     obd_flag valid, obd_flag flags)
 506 {
 507         unsigned int id;
 508         obd_flag noquota;
 509         int cnt, rc = 0;
 510         ENTRY;
 511
 512
 513         for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
 514                 struct osc_quota_info *oqi, *old;
 515
 516                 if (!(valid & ((cnt == USRQUOTA) ?
 517                     OBD_MD_FLUSRQUOTA : OBD_MD_FLGRPQUOTA)))
 518                         continue;
 519
 520                 id = (cnt == USRQUOTA) ? uid : gid;
 521                 noquota = (cnt == USRQUOTA) ?
 522                     (flags & OBD_FL_NO_USRQUOTA) : (flags & OBD_FL_NO_GRPQUOTA);
 523
 524                 oqi = alloc_qinfo(cli, id, cnt);
 525                 if (oqi) {
 526                         spin_lock(&qinfo_list_lock);
 527
 528                         old = find_qinfo(cli, id, cnt);
 529                         if (old && !noquota)
 530                                 remove_qinfo_hash(old);
 531                         else if (!old && noquota)
 532                                 insert_qinfo_hash(oqi);
 533
 534                         spin_unlock(&qinfo_list_lock);
 535
 536                         if (old || !noquota)
 537                                 free_qinfo(oqi);
 538                         if (old && !noquota)
 539                                 free_qinfo(old);
 540                 } else {
 541                         CERROR("not enough mem!\n");
 542                         rc = -ENOMEM;
 543                         break;
 544                 }
 545         }
 546
 547         RETURN(rc);
 548 }
 549
 550 int osc_quota_cleanup(struct obd_device *obd)
 551 {
 552         struct client_obd *cli = &obd->u.cli;
 553         struct osc_quota_info *oqi, *n;
 554         int i;
 555         ENTRY;
 556
 557         spin_lock(&qinfo_list_lock);
 558         for (i = 0; i < NR_DQHASH; i++) {
 559                 list_for_each_entry_safe(oqi, n, &qinfo_hash[i], oqi_hash) {
 560                         if (oqi->oqi_cli != cli)
 561                                 continue;
 562                         remove_qinfo_hash(oqi);
 563                         free_qinfo(oqi);
 564                 }
 565         }
 566         spin_unlock(&qinfo_list_lock);
 567
 568         RETURN(0);
 569 }
 570
 571 int osc_quota_init(void)
 572 {
 573         int i;
 574         ENTRY;
 575
 576         LASSERT(qinfo_cachep == NULL);
 577         qinfo_cachep = cfs_mem_cache_create("osc_quota_info",
 578                                          sizeof(struct osc_quota_info),
 579                                          0, 0);
 580         if (!qinfo_cachep)
 581                 RETURN(-ENOMEM);
 582
 583         for (i = 0; i < NR_DQHASH; i++)
 584                 INIT_LIST_HEAD(qinfo_hash + i);
 585
 586         RETURN(0);
 587 }
 588
 589 int osc_quota_exit(void)
 590 {
 591         struct osc_quota_info *oqi, *n;
 592         int i, rc;
 593         ENTRY;
 594
 595         spin_lock(&qinfo_list_lock);
 596         for (i = 0; i < NR_DQHASH; i++) {
 597                 list_for_each_entry_safe(oqi, n, &qinfo_hash[i], oqi_hash) {
 598                         remove_qinfo_hash(oqi);
 599                         free_qinfo(oqi);
 600                 }
 601         }
 602         spin_unlock(&qinfo_list_lock);
 603
 604         rc = cfs_mem_cache_destroy(qinfo_cachep);
 605         LASSERTF(rc == 0, "couldn't destory qinfo_cachep slab\n");
 606         qinfo_cachep = NULL;
 607
 608         RETURN(0);
 609 }
 610
 611 #ifdef __KERNEL__
 612 quota_interface_t mds_quota_interface = {
 613         .quota_init     = mds_quota_init,
 614         .quota_exit     = mds_quota_exit,
 615         .quota_setup    = mds_quota_setup,
 616         .quota_cleanup  = mds_quota_cleanup,
 617         .quota_check    = target_quota_check,
 618         .quota_ctl      = mds_quota_ctl,
 619         .quota_fs_cleanup       =mds_quota_fs_cleanup,
 620         .quota_recovery = mds_quota_recovery,
 621         .quota_adjust   = mds_quota_adjust,
 622 };
 623
 624 quota_interface_t filter_quota_interface = {
 625         .quota_setup    = filter_quota_setup,
 626         .quota_cleanup  = filter_quota_cleanup,
 627         .quota_check    = target_quota_check,
 628         .quota_ctl      = filter_quota_ctl,
 629         .quota_setinfo  = filter_quota_setinfo,
 630         .quota_enforce  = filter_quota_enforce,
 631         .quota_getflag  = filter_quota_getflag,
 632         .quota_acquire  = filter_quota_acquire,
 633         .quota_adjust   = filter_quota_adjust,
 634 };
 635 #endif /* __KERNEL__ */
 636
 637 quota_interface_t mdc_quota_interface = {
 638         .quota_ctl      = client_quota_ctl,
 639         .quota_check    = client_quota_check,
 640         .quota_poll_check = client_quota_poll_check,
 641 };
 642
 643 quota_interface_t osc_quota_interface = {
 644         .quota_ctl      = client_quota_ctl,
 645         .quota_check    = client_quota_check,
 646         .quota_poll_check = client_quota_poll_check,
 647         .quota_init     = osc_quota_init,
 648         .quota_exit     = osc_quota_exit,
 649         .quota_chkdq    = osc_quota_chkdq,
 650         .quota_setdq    = osc_quota_setdq,
 651         .quota_cleanup  = osc_quota_cleanup,
 652 };
 653
 654 quota_interface_t lov_quota_interface = {
 655         .quota_check    = lov_quota_check,
 656         .quota_ctl      = lov_quota_ctl,
 657 };
 658
 659 #ifdef __KERNEL__
 660 static int __init init_lustre_quota(void)
 661 {
 662         int rc = qunit_cache_init();
 663         if (rc)
 664                 return rc;
 665         PORTAL_SYMBOL_REGISTER(filter_quota_interface);
 666         PORTAL_SYMBOL_REGISTER(mds_quota_interface);
 667         PORTAL_SYMBOL_REGISTER(mdc_quota_interface);
 668         PORTAL_SYMBOL_REGISTER(osc_quota_interface);
 669         PORTAL_SYMBOL_REGISTER(lov_quota_interface);
 670         return 0;
 671 }
 672
 673 static void /*__exit*/ exit_lustre_quota(void)
 674 {
 675         PORTAL_SYMBOL_UNREGISTER(filter_quota_interface);
 676         PORTAL_SYMBOL_UNREGISTER(mds_quota_interface);
 677         PORTAL_SYMBOL_UNREGISTER(mdc_quota_interface);
 678         PORTAL_SYMBOL_UNREGISTER(osc_quota_interface);
 679         PORTAL_SYMBOL_UNREGISTER(lov_quota_interface);
 680
 681         qunit_cache_cleanup();
 682 }
 683
 684 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
 685 MODULE_DESCRIPTION("Lustre Quota");
 686 MODULE_LICENSE("GPL");
 687
 688 cfs_module(lquota, "1.0.0", init_lustre_quota, exit_lustre_quota);
 689
 690 EXPORT_SYMBOL(mds_quota_interface);
 691 EXPORT_SYMBOL(filter_quota_interface);
 692 EXPORT_SYMBOL(mdc_quota_interface);
 693 EXPORT_SYMBOL(osc_quota_interface);
 694 EXPORT_SYMBOL(lov_quota_interface);
 695 #endif /* __KERNEL */