lustre/include/lustre_quota.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  */
   4 #ifndef _LUSTRE_QUOTA_H
   5 #define _LUSTRE_QUOTA_H
   6
   7 #if defined(__linux__)
   8 #include <linux/lustre_quota.h>
   9 #elif defined(__APPLE__)
  10 #include <darwin/lustre_quota.h>
  11 #elif defined(__WINNT__)
  12 #include <winnt/lustre_quota.h>
  13 #else
  14 #error Unsupported operating system.
  15 #endif
  16
  17 #include <lustre/lustre_idl.h>
  18 #include <lustre_net.h>
  19 #include <lvfs.h>
  20 #include <obd_support.h>
  21
  22 struct obd_device;
  23 struct client_obd;
  24
  25 #ifndef NR_DQHASH
  26 #define NR_DQHASH 45
  27 #endif
  28
  29 #ifdef HAVE_QUOTA_SUPPORT
  30
  31 #ifdef __KERNEL__
  32
  33 /* structures to access admin quotafile */
  34 struct lustre_mem_dqinfo {
  35         unsigned int dqi_bgrace;
  36         unsigned int dqi_igrace;
  37         unsigned long dqi_flags;
  38         unsigned int dqi_blocks;
  39         unsigned int dqi_free_blk;
  40         unsigned int dqi_free_entry;
  41 };
  42
  43 struct lustre_quota_info {
  44         struct file *qi_files[MAXQUOTAS];
  45         struct lustre_mem_dqinfo qi_info[MAXQUOTAS];
  46         lustre_quota_version_t qi_version;
  47 };
  48
  49 #define DQ_STATUS_AVAIL         0x0     /* Available dquot */
  50 #define DQ_STATUS_SET           0x01    /* Sombody is setting dquot */
  51 #define DQ_STATUS_RECOVERY      0x02    /* dquot is in recovery */
  52
  53 struct lustre_mem_dqblk {
  54         __u64 dqb_bhardlimit;   /* absolute limit on disk blks alloc */
  55         __u64 dqb_bsoftlimit;   /* preferred limit on disk blks */
  56         __u64 dqb_curspace;     /* current used space */
  57         __u64 dqb_ihardlimit;   /* absolute limit on allocated inodes */
  58         __u64 dqb_isoftlimit;   /* preferred inode limit */
  59         __u64 dqb_curinodes;    /* current # allocated inodes */
  60         time_t dqb_btime;       /* time limit for excessive disk use */
  61         time_t dqb_itime;       /* time limit for excessive inode use */
  62 };
  63
  64 struct lustre_dquot {
  65         /* Hash list in memory, protect by dquot_hash_lock */
  66         struct list_head dq_hash;
  67         /* Protect the data in lustre_dquot */
  68         struct semaphore dq_sem;
  69         /* Use count */
  70         int dq_refcnt;
  71         /* Pointer of quota info it belongs to */
  72         struct lustre_quota_info *dq_info;
  73
  74         loff_t dq_off;                  /* Offset of dquot on disk */
  75         unsigned int dq_id;             /* ID this applies to (uid, gid) */
  76         int dq_type;                    /* Type fo quota (USRQUOTA, GRPQUOUTA) */
  77         unsigned short dq_status;       /* See DQ_STATUS_ */
  78         unsigned long dq_flags;         /* See DQ_ in quota.h */
  79         struct lustre_mem_dqblk dq_dqb; /* Diskquota usage */
  80 };
  81
  82 struct dquot_id {
  83         struct list_head        di_link;
  84         __u32                   di_id;
  85 };
  86
  87 #define QFILE_CHK               1
  88 #define QFILE_RD_INFO           2
  89 #define QFILE_WR_INFO           3
  90 #define QFILE_INIT_INFO         4
  91 #define QFILE_RD_DQUOT          5
  92 #define QFILE_WR_DQUOT          6
  93 #define QFILE_CONVERT           7
  94
  95 /* admin quotafile operations */
  96 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
  97 int lustre_check_quota_file(struct lustre_quota_info *lqi, int type);
  98 int lustre_read_quota_info(struct lustre_quota_info *lqi, int type);
  99 int lustre_write_quota_info(struct lustre_quota_info *lqi, int type);
 100 int lustre_read_dquot(struct lustre_dquot *dquot);
 101 int lustre_commit_dquot(struct lustre_dquot *dquot);
 102 int lustre_init_quota_info(struct lustre_quota_info *lqi, int type);
 103 int lustre_get_qids(struct file *file, struct inode *inode, int type,
 104                     struct list_head *list);
 105 int lustre_quota_convert(struct lustre_quota_info *lqi, int type);
 106 #else
 107
 108 #ifndef DQ_FAKE_B
 109 #define DQ_FAKE_B       6
 110 #endif
 111
 112 static inline int lustre_check_quota_file(struct lustre_quota_info *lqi,
 113                                           int type)
 114 {
 115         return 0;
 116 }
 117 static inline int lustre_read_quota_info(struct lustre_quota_info *lqi,
 118                                          int type)
 119 {
 120         return 0;
 121 }
 122 static inline int lustre_write_quota_info(struct lustre_quota_info *lqi,
 123                                           int type)
 124 {
 125         return 0;
 126 }
 127 static inline int lustre_read_dquot(struct lustre_dquot *dquot)
 128 {
 129         return 0;
 130 }
 131 static inline int lustre_commit_dquot(struct lustre_dquot *dquot)
 132 {
 133         return 0;
 134 }
 135 static inline int lustre_init_quota_info(struct lustre_quota_info *lqi,
 136                                          int type)
 137 {
 138         return 0;
 139 }
 140 static inline int lustre_quota_convert(struct lustre_quota_info *lqi,
 141                                        int type)
 142 {
 143         return 0;
 144 }
 145 #endif  /* KERNEL_VERSION(2,5,0) */
 146
 147 #define LL_DQUOT_OFF(sb)    DQUOT_OFF(sb)
 148
 149 typedef int (*dqacq_handler_t) (struct obd_device * obd, struct qunit_data * qd,
 150                                 int opc);
 151 struct lustre_quota_ctxt {
 152         struct super_block *lqc_sb;     /* superblock this applies to */
 153         struct obd_import *lqc_import;  /* import used to send dqacq/dqrel RPC */
 154         dqacq_handler_t lqc_handler;    /* dqacq/dqrel RPC handler, only for quota master */
 155         unsigned long lqc_recovery:1,   /* Doing recovery */
 156                       lqc_atype:2,      /* Turn on user/group quota at setup automatically,
 157                                          * 0: none, 1: user quota, 2: group quota, 3: both */
 158                       lqc_status:1,     /* Quota status. 0:Off, 1:On */
 159                       lqc_switch_qs:1;  /* the function of change qunit size
 160                                          * 0:Off, 1:On */
 161         unsigned long lqc_iunit_sz;     /* original unit size of file quota and
 162                                          * upper limitation for adjust file
 163                                          * qunit */
 164         unsigned long lqc_itune_sz;     /* Trigger dqacq when available file
 165                                          * quota less than this value, trigger
 166                                          * dqrel when available file quota
 167                                          * more than this value + 1 iunit */
 168         unsigned long lqc_bunit_sz;     /* original unit size of block quota and
 169                                          * upper limitation for adjust block
 170                                          * qunit */
 171         unsigned long lqc_btune_sz;     /* See comment of lqc_itune_sz */
 172         struct lustre_class_hash_body *lqc_lqs_hash_body;
 173                                         /* all lustre_qunit_size structure in
 174                                          * it */
 175         /* the values below are relative to how master change its qunit sizes */
 176         unsigned long lqc_cqs_boundary_factor; /* this affects the boundary of
 177                                                 * shrinking and enlarging qunit
 178                                                 * size. default=4 */
 179         unsigned long lqc_cqs_least_bunit;  /* the least value of block qunit */
 180         unsigned long lqc_cqs_least_iunit;  /* the least value of inode qunit */
 181         unsigned long lqc_cqs_qs_factor;    /* when enlarging, qunit size will
 182                                              * mutilple it; when shrinking,
 183                                              * qunit size will divide it */
 184         int           lqc_switch_seconds;   /* avoid ping-pong effect of
 185                                              * adjusting qunit size. How many
 186                                              * seconds must be waited between
 187                                              * enlarging and shinking qunit */
 188         spinlock_t    lqc_lock;         /* guard lqc_imp_valid now */
 189 };
 190
 191 #define LQC_HASH_BODY(qctxt) (qctxt->lqc_lqs_hash_body)
 192
 193 struct lustre_qunit_size {
 194         struct hlist_node lqs_hash; /* the hash entry */
 195         unsigned int lqs_id;        /* id of user/group */
 196         unsigned long lqs_flags;    /* is user/group; FULLBUF or LESSBUF */
 197         unsigned long lqs_iunit_sz; /* Unit size of file quota currently */
 198         unsigned long lqs_itune_sz; /* Trigger dqacq when available file quota
 199                                      * less than this value, trigger dqrel
 200                                      * when more than this value + 1 iunit */
 201         unsigned long lqs_bunit_sz; /* Unit size of block quota currently */
 202         unsigned long lqs_btune_sz; /* See comment of lqs itune sz */
 203         unsigned long lqs_bwrite_pending; /* the blocks reached ost and don't
 204                                            * finish */
 205         unsigned long lqs_iwrite_pending; /* the inodes reached mds and don't
 206                                            * finish */
 207         long long lqs_ino_rec;  /* when inodes are allocated/released,
 208                                  * this value will record it */
 209         long long lqs_blk_rec;  /* when blocks are allocated/released,
 210                                  * this value will record it */
 211         atomic_t lqs_refcount;
 212         cfs_time_t lqs_last_bshrink;   /* time of last block shrink */
 213         cfs_time_t lqs_last_ishrink;   /* time of last inode shrink */
 214         spinlock_t lqs_lock;
 215 };
 216
 217 #define LQS_IS_GRP(lqs)    ((lqs)->lqs_flags & LQUOTA_FLAGS_GRP)
 218 #define LQS_IS_ADJBLK(lqs) ((lqs)->lqs_flags & LQUOTA_FLAGS_ADJBLK)
 219 #define LQS_IS_ADJINO(lqs) ((lqs)->lqs_flags & LQUOTA_FLAGS_ADJINO)
 220
 221 #define LQS_SET_GRP(lqs)    ((lqs)->lqs_flags |= LQUOTA_FLAGS_GRP)
 222 #define LQS_SET_ADJBLK(lqs) ((lqs)->lqs_flags |= LQUOTA_FLAGS_ADJBLK)
 223 #define LQS_SET_ADJINO(lqs) ((lqs)->lqs_flags |= LQUOTA_FLAGS_ADJINO)
 224
 225 static inline void lqs_getref(struct lustre_qunit_size *lqs)
 226 {
 227         atomic_inc(&lqs->lqs_refcount);
 228 }
 229
 230 static inline void lqs_putref(struct lustre_qunit_size *lqs)
 231 {
 232         if (atomic_dec_and_test(&lqs->lqs_refcount)) {
 233                 spin_lock(&lqs->lqs_lock);
 234                 hlist_del_init(&lqs->lqs_hash);
 235                 spin_unlock(&lqs->lqs_lock);
 236                 OBD_FREE_PTR(lqs);
 237         }
 238 }
 239
 240 static inline void lqs_initref(struct lustre_qunit_size *lqs)
 241 {
 242         atomic_set(&lqs->lqs_refcount, 0);
 243 }
 244
 245 #else
 246
 247 struct lustre_quota_info {
 248 };
 249
 250 struct lustre_quota_ctxt {
 251 };
 252
 253 #endif  /* !__KERNEL__ */
 254
 255 #else
 256
 257 #define LL_DQUOT_OFF(sb) do {} while(0)
 258
 259 struct lustre_quota_info {
 260 };
 261
 262 struct lustre_quota_ctxt {
 263 };
 264
 265 #endif /* !HAVE_QUOTA_SUPPORT */
 266
 267 /* If the (quota limit < qunit * slave count), the slave which can't
 268  * acquire qunit should set it's local limit as MIN_QLIMIT */
 269 #define MIN_QLIMIT      1
 270
 271 struct quotacheck_thread_args {
 272         struct obd_export   *qta_exp;   /* obd export */
 273         struct obd_quotactl  qta_oqctl; /* obd_quotactl args */
 274         struct super_block  *qta_sb;    /* obd super block */
 275         atomic_t            *qta_sem;   /* obt_quotachecking */
 276 };
 277
 278 typedef int (*quota_acquire)(struct obd_device *obd,
 279                              unsigned int uid, unsigned int gid);
 280
 281 typedef struct {
 282         int (*quota_init) (void);
 283         int (*quota_exit) (void);
 284         int (*quota_setup) (struct obd_device *);
 285         int (*quota_cleanup) (struct obd_device *);
 286         /* For quota master, close admin quota files */
 287         int (*quota_fs_cleanup) (struct obd_device *);
 288         int (*quota_ctl) (struct obd_export *, struct obd_quotactl *);
 289         int (*quota_check) (struct obd_export *, struct obd_quotactl *);
 290         int (*quota_recovery) (struct obd_device *);
 291
 292         /* For quota master/slave, adjust quota limit after fs operation */
 293         int (*quota_adjust) (struct obd_device *, unsigned int[],
 294                              unsigned int[], int, int);
 295
 296         /* For quota slave, set import, trigger quota recovery */
 297         int (*quota_setinfo) (struct obd_export *, struct obd_device *);
 298
 299         /* For quota slave, clear import when relative import is invalid */
 300         int (*quota_clearinfo) (struct obd_export *, struct obd_device *);
 301
 302         /* For quota slave, set proper thread resoure capability */
 303         int (*quota_enforce) (struct obd_device *, unsigned int);
 304
 305         /* For quota slave, check whether specified uid/gid is over quota */
 306         int (*quota_getflag) (struct obd_device *, struct obdo *);
 307
 308         /* For quota slave, acquire/release quota from master if needed */
 309         int (*quota_acquire) (struct obd_device *, unsigned int, unsigned int);
 310
 311         /* For quota slave, check whether specified uid/gid's remaining quota
 312          * can finish a block_write or inode_create rpc. It updates the pending
 313          * record of block and inode, acquires quota if necessary */
 314         int (*quota_chkquota) (struct obd_device *, unsigned int, unsigned int,
 315                                int, int *, quota_acquire);
 316
 317         /* For quota client, poll if the quota check done */
 318         int (*quota_poll_check) (struct obd_export *, struct if_quotacheck *);
 319
 320         /* For quota client, check whether specified uid/gid is over quota */
 321         int (*quota_chkdq) (struct client_obd *, unsigned int, unsigned int);
 322
 323         /* For quota client, the actions after the pending write is committed */
 324         int (*quota_pending_commit) (struct obd_device *, unsigned int,
 325                                      unsigned int, int);
 326
 327         /* For quota client, set over quota flag for specifed uid/gid */
 328         int (*quota_setdq) (struct client_obd *, unsigned int, unsigned int,
 329                             obd_flag, obd_flag);
 330
 331         /* For adjusting qunit size b=10600 */
 332         int (*quota_adjust_qunit) (struct obd_export *exp, struct
 333                                    quota_adjust_qunit *oqaq);
 334
 335 } quota_interface_t;
 336
 337 #define Q_COPY(out, in, member) (out)->member = (in)->member
 338
 339 #define QUOTA_OP(interface, op) interface->quota_ ## op
 340
 341 #define QUOTA_CHECK_OP(interface, op)                           \
 342 do {                                                            \
 343         if (!interface)                                         \
 344                 RETURN(0);                                      \
 345         if (!QUOTA_OP(interface, op)) {                         \
 346                 CERROR("no quota operation: " #op "\n");        \
 347                 RETURN(-EOPNOTSUPP);                            \
 348         }                                                       \
 349 } while(0)
 350
 351 static inline int lquota_init(quota_interface_t *interface)
 352 {
 353         int rc;
 354         ENTRY;
 355
 356         QUOTA_CHECK_OP(interface, init);
 357         rc = QUOTA_OP(interface, init)();
 358         RETURN(rc);
 359 }
 360
 361 static inline int lquota_exit(quota_interface_t *interface)
 362 {
 363         int rc;
 364         ENTRY;
 365
 366         QUOTA_CHECK_OP(interface, exit);
 367         rc = QUOTA_OP(interface, exit)();
 368         RETURN(rc);
 369 }
 370
 371 static inline int lquota_setup(quota_interface_t *interface,
 372                                struct obd_device *obd)
 373 {
 374         int rc;
 375         ENTRY;
 376
 377         QUOTA_CHECK_OP(interface, setup);
 378         rc = QUOTA_OP(interface, setup)(obd);
 379         RETURN(rc);
 380 }
 381
 382 static inline int lquota_cleanup(quota_interface_t *interface,
 383                                  struct obd_device *obd)
 384 {
 385         int rc;
 386         ENTRY;
 387
 388         QUOTA_CHECK_OP(interface, cleanup);
 389         rc = QUOTA_OP(interface, cleanup)(obd);
 390         RETURN(rc);
 391 }
 392
 393 static inline int lquota_fs_cleanup(quota_interface_t *interface,
 394                                     struct obd_device *obd)
 395 {
 396         int rc;
 397         ENTRY;
 398
 399         QUOTA_CHECK_OP(interface, fs_cleanup);
 400         rc = QUOTA_OP(interface, fs_cleanup)(obd);
 401         RETURN(rc);
 402 }
 403
 404 static inline int lquota_recovery(quota_interface_t *interface,
 405                                   struct obd_device *obd)
 406 {
 407         int rc;
 408         ENTRY;
 409
 410         QUOTA_CHECK_OP(interface, recovery);
 411         rc = QUOTA_OP(interface, recovery)(obd);
 412         RETURN(rc);
 413 }
 414
 415 static inline int lquota_adjust(quota_interface_t *interface,
 416                                 struct obd_device *obd,
 417                                 unsigned int qcids[],
 418                                 unsigned int qpids[],
 419                                 int rc, int opc)
 420 {
 421         int ret;
 422         ENTRY;
 423
 424         QUOTA_CHECK_OP(interface, adjust);
 425         ret = QUOTA_OP(interface, adjust)(obd, qcids, qpids, rc, opc);
 426         RETURN(ret);
 427 }
 428
 429 static inline int lquota_chkdq(quota_interface_t *interface,
 430                                struct client_obd *cli,
 431                                unsigned int uid, unsigned int gid)
 432 {
 433         int rc;
 434         ENTRY;
 435
 436         QUOTA_CHECK_OP(interface, chkdq);
 437         rc = QUOTA_OP(interface, chkdq)(cli, uid, gid);
 438         RETURN(rc);
 439 }
 440
 441 static inline int lquota_setdq(quota_interface_t *interface,
 442                                struct client_obd *cli,
 443                                unsigned int uid, unsigned int gid,
 444                                obd_flag valid, obd_flag flags)
 445 {
 446         int rc;
 447         ENTRY;
 448
 449         QUOTA_CHECK_OP(interface, setdq);
 450         rc = QUOTA_OP(interface, setdq)(cli, uid, gid, valid, flags);
 451         RETURN(rc);
 452 }
 453
 454 static inline int lquota_poll_check(quota_interface_t *interface,
 455                                     struct obd_export *exp,
 456                                     struct if_quotacheck *qchk)
 457 {
 458         int rc;
 459         ENTRY;
 460
 461         QUOTA_CHECK_OP(interface, poll_check);
 462         rc = QUOTA_OP(interface, poll_check)(exp, qchk);
 463         RETURN(rc);
 464 }
 465
 466 static inline int lquota_setinfo(quota_interface_t *interface,
 467                                  struct obd_export *exp,
 468                                  struct obd_device *obd)
 469 {
 470         int rc;
 471         ENTRY;
 472
 473         QUOTA_CHECK_OP(interface, setinfo);
 474         rc = QUOTA_OP(interface, setinfo)(exp, obd);
 475         RETURN(rc);
 476 }
 477
 478 static inline int lquota_clearinfo(quota_interface_t *interface,
 479                                    struct obd_export *exp,
 480                                    struct obd_device *obd)
 481 {
 482         int rc;
 483         ENTRY;
 484
 485         QUOTA_CHECK_OP(interface, clearinfo);
 486         rc = QUOTA_OP(interface, clearinfo)(exp, obd);
 487         RETURN(rc);
 488 }
 489
 490 static inline int lquota_enforce(quota_interface_t *interface,
 491                                  struct obd_device *obd,
 492                                  unsigned int ignore)
 493 {
 494         int rc;
 495         ENTRY;
 496
 497         QUOTA_CHECK_OP(interface, enforce);
 498         rc = QUOTA_OP(interface, enforce)(obd, ignore);
 499         RETURN(rc);
 500 }
 501
 502 static inline int lquota_getflag(quota_interface_t *interface,
 503                                  struct obd_device *obd, struct obdo *oa)
 504 {
 505         int rc;
 506         ENTRY;
 507
 508         QUOTA_CHECK_OP(interface, getflag);
 509         rc = QUOTA_OP(interface, getflag)(obd, oa);
 510         RETURN(rc);
 511 }
 512
 513 static inline int lquota_acquire(quota_interface_t *interface,
 514                                  struct obd_device *obd,
 515                                  unsigned int uid, unsigned int gid)
 516 {
 517         int rc;
 518         ENTRY;
 519
 520         QUOTA_CHECK_OP(interface, acquire);
 521         rc = QUOTA_OP(interface, acquire)(obd, uid, gid);
 522         RETURN(rc);
 523 }
 524
 525 static inline int lquota_chkquota(quota_interface_t *interface,
 526                                   struct obd_device *obd,
 527                                   unsigned int uid, unsigned int gid,
 528                                   int count, int *flag)
 529 {
 530         int rc;
 531         ENTRY;
 532
 533         QUOTA_CHECK_OP(interface, chkquota);
 534         QUOTA_CHECK_OP(interface, acquire);
 535         rc = QUOTA_OP(interface, chkquota)(obd, uid, gid, count, flag,
 536                                            QUOTA_OP(interface, acquire));
 537         RETURN(rc);
 538 }
 539
 540 static inline int lquota_pending_commit(quota_interface_t *interface,
 541                                         struct obd_device *obd,
 542                                         unsigned int uid, unsigned int gid,
 543                                         int npage)
 544 {
 545         int rc;
 546         ENTRY;
 547
 548         QUOTA_CHECK_OP(interface, pending_commit);
 549         rc = QUOTA_OP(interface, pending_commit)(obd, uid, gid, npage);
 550         RETURN(rc);
 551 }
 552
 553 int lprocfs_quota_rd_bunit(char *page, char **start, off_t off, int count,
 554                            int *eof, void *data);
 555 int lprocfs_quota_wr_bunit(struct file *file, const char *buffer,
 556                            unsigned long count, void *data);
 557 int lprocfs_quota_rd_btune(char *page, char **start, off_t off, int count,
 558                            int *eof, void *data);
 559 int lprocfs_quota_wr_btune(struct file *file, const char *buffer,
 560                            unsigned long count, void *data);
 561 int lprocfs_quota_rd_iunit(char *page, char **start, off_t off, int count,
 562                            int *eof, void *data);
 563 int lprocfs_quota_wr_iunit(struct file *file, const char *buffer,
 564                            unsigned long count, void *data);
 565 int lprocfs_quota_rd_itune(char *page, char **start, off_t off, int count,
 566                            int *eof, void *data);
 567 int lprocfs_quota_wr_itune(struct file *file, const char *buffer,
 568                            unsigned long count, void *data);
 569 int lprocfs_quota_rd_type(char *page, char **start, off_t off, int count,
 570                           int *eof, void *data);
 571 int lprocfs_quota_wr_type(struct file *file, const char *buffer,
 572                           unsigned long count, void *data);
 573 int lprocfs_quota_rd_switch_seconds(char *page, char **start, off_t off,
 574                                     int count, int *eof, void *data);
 575 int lprocfs_quota_wr_switch_seconds(struct file *file, const char *buffer,
 576                                     unsigned long count, void *data);
 577
 578 #ifndef __KERNEL__
 579 extern quota_interface_t osc_quota_interface;
 580 extern quota_interface_t mdc_quota_interface;
 581 extern quota_interface_t lov_quota_interface;
 582 #endif
 583
 584 #define LUSTRE_ADMIN_QUOTAFILES_V1 {\
 585         "admin_quotafile.usr",  /* user admin quotafile */\
 586         "admin_quotafile.grp"   /* group admin quotafile */\
 587 }
 588
 589 #define LUSTRE_ADMIN_QUOTAFILES_V2 {\
 590         "admin_quotafile_v2.usr",       /* user admin quotafile */\
 591         "admin_quotafile_v2.grp"        /* group admin quotafile */\
 592 }
 593
 594 #endif /* _LUSTRE_QUOTA_H */