lustre/include/linux/obd_class.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  Copyright (C) 2001-2003 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of Lustre, http://www.lustre.org.
   7  *
   8  *   Lustre is free software; you can redistribute it and/or
   9  *   modify it under the terms of version 2 of the GNU General Public
  10  *   License as published by the Free Software Foundation.
  11  *
  12  *   Lustre is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with Lustre; if not, write to the Free Software
  19  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  */
  22
  23 #ifndef __LINUX_CLASS_OBD_H
  24 #define __LINUX_CLASS_OBD_H
  25
  26 #ifndef __KERNEL__
  27 #include <sys/types.h>
  28 #include <portals/list.h>
  29 #else
  30 #include <asm/segment.h>
  31 #include <asm/uaccess.h>
  32 #include <linux/types.h>
  33 #include <linux/fs.h>
  34 #include <linux/time.h>
  35 #endif
  36
  37 #include <linux/obd_support.h>
  38 #include <linux/lustre_import.h>
  39 #include <linux/lustre_net.h>
  40 #include <linux/obd.h>
  41 #include <linux/lustre_lib.h>
  42 #include <linux/lustre_idl.h>
  43 #include <linux/lustre_mds.h>
  44 #include <linux/lustre_dlm.h>
  45 #include <linux/lprocfs_status.h>
  46
  47
  48 /* OBD Device Declarations */
  49 #define MAX_OBD_DEVICES 128
  50 extern struct obd_device obd_dev[MAX_OBD_DEVICES];
  51
  52 /* OBD Operations Declarations */
  53 extern struct obd_device *class_conn2obd(struct lustre_handle *);
  54
  55 /* genops.c */
  56 struct obd_export *class_conn2export(struct lustre_handle *);
  57 int class_register_type(struct obd_ops *ops, struct lprocfs_vars *, char *nm);
  58 int class_unregister_type(char *nm);
  59 int class_name2dev(char *name);
  60 struct obd_device *class_name2obd(char *name);
  61 int class_uuid2dev(struct obd_uuid *uuid);
  62 struct obd_device *class_uuid2obd(struct obd_uuid *uuid);
  63
  64 struct obd_export *class_export_get(struct obd_export *);
  65 void class_export_put(struct obd_export *);
  66 struct obd_export *class_new_export(struct obd_device *obddev);
  67 void class_unlink_export(struct obd_export *exp);
  68
  69 struct obd_import *class_import_get(struct obd_import *);
  70 void class_import_put(struct obd_import *);
  71 struct obd_import *class_new_import(void);
  72 void class_destroy_import(struct obd_import *exp);
  73
  74 struct obd_type *class_get_type(char *name);
  75 void class_put_type(struct obd_type *type);
  76 int class_connect(struct lustre_handle *conn, struct obd_device *obd,
  77                   struct obd_uuid *cluuid);
  78 int class_disconnect(struct lustre_handle *conn, int failover);
  79 void class_disconnect_exports(struct obd_device *obddev, int failover);
  80 /* generic operations shared by various OBD types */
  81 int class_multi_setup(struct obd_device *obddev, uint32_t len, void *data);
  82 int class_multi_cleanup(struct obd_device *obddev);
  83
  84 static inline int obd_check_conn(struct lustre_handle *conn)
  85 {
  86         struct obd_device *obd;
  87         if (!conn) {
  88                 CERROR("NULL conn\n");
  89                 RETURN(-ENOTCONN);
  90         }
  91
  92         obd = class_conn2obd(conn);
  93         if (!obd) {
  94                 CERROR("NULL obd\n");
  95                 RETURN(-ENODEV);
  96         }
  97
  98         if (!obd->obd_attached) {
  99                 CERROR("obd %d not attached\n", obd->obd_minor);
 100                 RETURN(-ENODEV);
 101         }
 102
 103         if (!obd->obd_set_up) {
 104                 CERROR("obd %d not setup\n", obd->obd_minor);
 105                 RETURN(-ENODEV);
 106         }
 107
 108         if (!obd->obd_type) {
 109                 CERROR("obd %d not typed\n", obd->obd_minor);
 110                 RETURN(-ENODEV);
 111         }
 112
 113         if (!obd->obd_type->typ_ops) {
 114                 CERROR("obd_check_conn: obd %d no operations\n",
 115                        obd->obd_minor);
 116                 RETURN(-EOPNOTSUPP);
 117         }
 118         return 0;
 119 }
 120
 121
 122 #define OBT(dev)        (dev)->obd_type
 123 #define OBP(dev, op)    (dev)->obd_type->typ_ops->o_ ## op
 124
 125 /* Ensure obd_setup: used for disconnect which might be called while
 126    an obd is stopping. */
 127 #define OBD_CHECK_SETUP(conn, exp)                                      \
 128 do {                                                                    \
 129         if (!(conn)) {                                                  \
 130                 CERROR("NULL connection\n");                            \
 131                 RETURN(-EINVAL);                                        \
 132         }                                                               \
 133                                                                         \
 134         exp = class_conn2export(conn);                                  \
 135         if (!(exp)) {                                                   \
 136                 CERROR("No export for conn "LPX64"\n", (conn)->cookie); \
 137                 RETURN(-EINVAL);                                        \
 138         }                                                               \
 139                                                                         \
 140         if (!(exp)->exp_obd->obd_set_up) {                              \
 141                 CERROR("Device %d not setup\n",                         \
 142                        (exp)->exp_obd->obd_minor);                      \
 143                 class_export_put(exp);                                  \
 144                 RETURN(-EINVAL);                                        \
 145         }                                                               \
 146 } while (0)
 147
 148 /* Ensure obd_setup and !obd_stopping. */
 149 #define OBD_CHECK_ACTIVE(conn, exp)                                     \
 150 do {                                                                    \
 151         if (!(conn)) {                                                  \
 152                 CERROR("NULL connection\n");                            \
 153                 RETURN(-EINVAL);                                        \
 154         }                                                               \
 155                                                                         \
 156         exp = class_conn2export(conn);                                  \
 157         if (!(exp)) {                                                   \
 158                 CERROR("No export for conn "LPX64"\n", (conn)->cookie); \
 159                 RETURN(-EINVAL);                                        \
 160         }                                                               \
 161                                                                         \
 162         if (!(exp)->exp_obd->obd_set_up || (exp)->exp_obd->obd_stopping) { \
 163                 CERROR("Device %d not setup\n",                         \
 164                        (exp)->exp_obd->obd_minor);                      \
 165                 class_export_put(exp);                                  \
 166                 RETURN(-EINVAL);                                        \
 167         }                                                               \
 168 } while (0)
 169
 170 /* Ensure obd_setup: used for cleanup which must be called
 171    while obd is stopping */
 172 #define OBD_CHECK_DEV_STOPPING(obd)                             \
 173 do {                                                            \
 174         if (!(obd)) {                                           \
 175                 CERROR("NULL device\n");                        \
 176                 RETURN(-ENODEV);                                \
 177         }                                                       \
 178                                                                 \
 179         if (!(obd)->obd_set_up) {                               \
 180                 CERROR("Device %d not setup\n",                 \
 181                        (obd)->obd_minor);                       \
 182                 RETURN(-ENODEV);                                \
 183         }                                                       \
 184                                                                 \
 185         if (!(obd)->obd_stopping) {                             \
 186                 CERROR("Device %d not stopping\n",              \
 187                        (obd)->obd_minor);                       \
 188                 RETURN(-ENODEV);                                \
 189         }                                                       \
 190 } while (0)
 191
 192 /* ensure obd_setup and !obd_stopping */
 193 #define OBD_CHECK_DEV_ACTIVE(obd)                               \
 194 do {                                                            \
 195         if (!(obd)) {                                           \
 196                 CERROR("NULL device\n");                        \
 197                 RETURN(-ENODEV);                                \
 198         }                                                       \
 199                                                                 \
 200         if (!(obd)->obd_set_up || (obd)->obd_stopping) {        \
 201                 CERROR("Device %d not setup\n",                 \
 202                        (obd)->obd_minor);                       \
 203                 RETURN(-ENODEV);                                \
 204         }                                                       \
 205 } while (0)
 206
 207
 208 #ifdef LPROCFS
 209 #define OBD_COUNTER_OFFSET(op)                                  \
 210         ((offsetof(struct obd_ops, o_ ## op) -                  \
 211           offsetof(struct obd_ops, o_iocontrol))                \
 212          / sizeof(((struct obd_ops *)(0))->o_iocontrol))
 213
 214 #define OBD_COUNTER_INCREMENT(obd, op)                          \
 215         if ((obd)->obd_stats != NULL) {                         \
 216                 unsigned int coffset;                           \
 217                 coffset = (unsigned int)(obd)->obd_cntr_base +  \
 218                         OBD_COUNTER_OFFSET(op);                 \
 219                 LASSERT(coffset < obd->obd_stats->ls_num);      \
 220                 lprocfs_counter_incr(obd->obd_stats, coffset);  \
 221         }
 222 #else
 223 #define OBD_COUNTER_OFFSET(op)
 224 #define OBD_COUNTER_INCREMENT(obd, op)
 225 #endif
 226
 227 #define OBD_CHECK_OP(obd, op)                                   \
 228 do {                                                            \
 229         if (!OBP((obd), op)) {                                  \
 230                 CERROR("obd_" #op ": dev %d no operation\n",    \
 231                        obd->obd_minor);                         \
 232                 RETURN(-EOPNOTSUPP);                            \
 233         }                                                       \
 234 } while (0)
 235
 236 static inline int obd_get_info(struct lustre_handle *conn, __u32 keylen,
 237                                void *key, __u32 *vallen, void *val)
 238 {
 239         struct obd_export *exp;
 240         int rc;
 241         ENTRY;
 242
 243         OBD_CHECK_ACTIVE(conn, exp);
 244         OBD_CHECK_OP(exp->exp_obd, get_info);
 245         OBD_COUNTER_INCREMENT(exp->exp_obd, get_info);
 246
 247         rc = OBP(exp->exp_obd, get_info)(conn, keylen, key, vallen, val);
 248         class_export_put(exp);
 249         RETURN(rc);
 250 }
 251
 252 static inline int obd_set_info(struct lustre_handle *conn, obd_count keylen,
 253                                void *key, obd_count vallen, void *val)
 254 {
 255         struct obd_export *exp;
 256         int rc;
 257         ENTRY;
 258
 259         OBD_CHECK_ACTIVE(conn, exp);
 260         OBD_CHECK_OP(exp->exp_obd, set_info);
 261         OBD_COUNTER_INCREMENT(exp->exp_obd, set_info);
 262
 263         rc = OBP(exp->exp_obd, set_info)(conn, keylen, key, vallen, val);
 264         class_export_put(exp);
 265         RETURN(rc);
 266 }
 267
 268 static inline int obd_setup(struct obd_device *obd, int datalen, void *data)
 269 {
 270         int rc;
 271         ENTRY;
 272
 273         OBD_CHECK_OP(obd, setup);
 274         OBD_COUNTER_INCREMENT(obd, setup);
 275
 276         rc = OBP(obd, setup)(obd, datalen, data);
 277         RETURN(rc);
 278 }
 279
 280 static inline int obd_cleanup(struct obd_device *obd, int force, int failover)
 281 {
 282         int rc;
 283         ENTRY;
 284
 285         OBD_CHECK_DEV_STOPPING(obd);
 286         OBD_CHECK_OP(obd, cleanup);
 287         OBD_COUNTER_INCREMENT(obd, cleanup);
 288
 289         rc = OBP(obd, cleanup)(obd, force, failover);
 290         RETURN(rc);
 291 }
 292
 293 /* Pack an in-memory MD struct for storage on disk.
 294  * Returns +ve size of packed MD (0 for free), or -ve error.
 295  *
 296  * If @disk_tgt == NULL, MD size is returned (max size if @mem_src == NULL).
 297  * If @*disk_tgt != NULL and @mem_src == NULL, @*disk_tgt will be freed.
 298  * If @*disk_tgt == NULL, it will be allocated
 299  */
 300 static inline int obd_packmd(struct lustre_handle *conn,
 301                              struct lov_mds_md **disk_tgt,
 302                              struct lov_stripe_md *mem_src)
 303 {
 304         struct obd_export *exp;
 305         int rc;
 306         ENTRY;
 307
 308         OBD_CHECK_ACTIVE(conn, exp);
 309         OBD_CHECK_OP(exp->exp_obd, packmd);
 310         OBD_COUNTER_INCREMENT(exp->exp_obd, packmd);
 311
 312         rc = OBP(exp->exp_obd, packmd)(conn, disk_tgt, mem_src);
 313         class_export_put(exp);
 314         RETURN(rc);
 315 }
 316
 317 static inline int obd_size_diskmd(struct lustre_handle *conn,
 318                                   struct lov_stripe_md *mem_src)
 319 {
 320         return obd_packmd(conn, NULL, mem_src);
 321 }
 322
 323 /* helper functions */
 324 static inline int obd_alloc_diskmd(struct lustre_handle *conn,
 325                                    struct lov_mds_md **disk_tgt)
 326 {
 327         LASSERT(disk_tgt);
 328         LASSERT(*disk_tgt == NULL);
 329         return obd_packmd(conn, disk_tgt, NULL);
 330 }
 331
 332 static inline int obd_free_diskmd(struct lustre_handle *conn,
 333                                   struct lov_mds_md **disk_tgt)
 334 {
 335         LASSERT(disk_tgt);
 336         LASSERT(*disk_tgt);
 337         return obd_packmd(conn, disk_tgt, NULL);
 338 }
 339
 340 /* Unpack an MD struct from disk to in-memory format.
 341  * Returns +ve size of unpacked MD (0 for free), or -ve error.
 342  *
 343  * If @mem_tgt == NULL, MD size is returned (max size if @disk_src == NULL).
 344  * If @*mem_tgt != NULL and @disk_src == NULL, @*mem_tgt will be freed.
 345  * If @*mem_tgt == NULL, it will be allocated
 346  */
 347 static inline int obd_unpackmd(struct lustre_handle *conn,
 348                                struct lov_stripe_md **mem_tgt,
 349                                struct lov_mds_md *disk_src,
 350                                int disk_len)
 351 {
 352         struct obd_export *exp;
 353         int rc;
 354         ENTRY;
 355
 356         OBD_CHECK_ACTIVE(conn, exp);
 357         OBD_CHECK_OP(exp->exp_obd, unpackmd);
 358         OBD_COUNTER_INCREMENT(exp->exp_obd, unpackmd);
 359
 360         rc = OBP(exp->exp_obd, unpackmd)(conn, mem_tgt, disk_src, disk_len);
 361         class_export_put(exp);
 362         RETURN(rc);
 363 }
 364
 365 static inline int obd_size_memmd(struct lustre_handle *conn,
 366                                  struct lov_mds_md *disk_src,
 367                                  int disk_len)
 368 {
 369         return obd_unpackmd(conn, NULL, disk_src, disk_len);
 370 }
 371
 372 /* helper functions */
 373 static inline int obd_alloc_memmd(struct lustre_handle *conn,
 374                                   struct lov_stripe_md **mem_tgt)
 375 {
 376         LASSERT(mem_tgt);
 377         LASSERT(*mem_tgt == NULL);
 378         return obd_unpackmd(conn, mem_tgt, NULL, 0);
 379 }
 380
 381 static inline int obd_free_memmd(struct lustre_handle *conn,
 382                                  struct lov_stripe_md **mem_tgt)
 383 {
 384         LASSERT(mem_tgt);
 385         LASSERT(*mem_tgt);
 386         return obd_unpackmd(conn, mem_tgt, NULL, 0);
 387 }
 388
 389 static inline int obd_create(struct lustre_handle *conn, struct obdo *obdo,
 390                              struct lov_stripe_md **ea,
 391                              struct obd_trans_info *oti)
 392 {
 393         struct obd_export *exp;
 394         int rc;
 395         ENTRY;
 396
 397         OBD_CHECK_ACTIVE(conn, exp);
 398         OBD_CHECK_OP(exp->exp_obd, create);
 399         OBD_COUNTER_INCREMENT(exp->exp_obd, create);
 400
 401         rc = OBP(exp->exp_obd, create)(conn, obdo, ea, oti);
 402         class_export_put(exp);
 403         RETURN(rc);
 404 }
 405
 406 static inline int obd_destroy(struct lustre_handle *conn, struct obdo *obdo,
 407                               struct lov_stripe_md *ea,
 408                               struct obd_trans_info *oti)
 409 {
 410         struct obd_export *exp;
 411         int rc;
 412         ENTRY;
 413
 414         OBD_CHECK_ACTIVE(conn, exp);
 415         OBD_CHECK_OP(exp->exp_obd, destroy);
 416         OBD_COUNTER_INCREMENT(exp->exp_obd, destroy);
 417
 418         rc = OBP(exp->exp_obd, destroy)(conn, obdo, ea, oti);
 419         class_export_put(exp);
 420         RETURN(rc);
 421 }
 422
 423 static inline int obd_getattr(struct lustre_handle *conn, struct obdo *obdo,
 424                               struct lov_stripe_md *ea)
 425 {
 426         struct obd_export *exp;
 427         int rc;
 428         ENTRY;
 429
 430         OBD_CHECK_ACTIVE(conn, exp);
 431         OBD_CHECK_OP(exp->exp_obd, getattr);
 432         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 433
 434         rc = OBP(exp->exp_obd, getattr)(conn, obdo, ea);
 435         class_export_put(exp);
 436         RETURN(rc);
 437 }
 438
 439 static inline int obd_getattr_async(struct lustre_handle *conn,
 440                                     struct obdo *obdo, struct lov_stripe_md *ea,
 441                                     struct ptlrpc_request_set *set)
 442 {
 443         struct obd_export *exp;
 444         int rc;
 445         ENTRY;
 446
 447         OBD_CHECK_SETUP(conn, exp);
 448         OBD_CHECK_OP(exp->exp_obd, getattr);
 449         OBD_COUNTER_INCREMENT(exp->exp_obd, getattr);
 450
 451         rc = OBP(exp->exp_obd, getattr_async)(conn, obdo, ea, set);
 452         class_export_put(exp);
 453         RETURN(rc);
 454 }
 455
 456 static inline int obd_close(struct lustre_handle *conn, struct obdo *obdo,
 457                             struct lov_stripe_md *ea,
 458                             struct obd_trans_info *oti)
 459 {
 460         struct obd_export *exp;
 461         int rc;
 462         ENTRY;
 463
 464         OBD_CHECK_ACTIVE(conn, exp);
 465         OBD_CHECK_OP(exp->exp_obd, close);
 466         OBD_COUNTER_INCREMENT(exp->exp_obd, close);
 467
 468         rc = OBP(exp->exp_obd, close)(conn, obdo, ea, oti);
 469         class_export_put(exp);
 470         RETURN(rc);
 471 }
 472
 473 static inline int obd_open(struct lustre_handle *conn, struct obdo *obdo,
 474                            struct lov_stripe_md *ea, struct obd_trans_info *oti,
 475                            struct obd_client_handle *och)
 476 {
 477         struct obd_export *exp;
 478         int rc;
 479         ENTRY;
 480
 481         OBD_CHECK_ACTIVE(conn, exp);
 482         OBD_CHECK_OP(exp->exp_obd, open);
 483         OBD_COUNTER_INCREMENT(exp->exp_obd, open);
 484
 485         rc = OBP(exp->exp_obd, open)(conn, obdo, ea, oti, och);
 486         class_export_put(exp);
 487         RETURN(rc);
 488 }
 489
 490 static inline int obd_setattr(struct lustre_handle *conn, struct obdo *obdo,
 491                               struct lov_stripe_md *ea,
 492                               struct obd_trans_info *oti)
 493 {
 494         struct obd_export *exp;
 495         int rc;
 496         ENTRY;
 497
 498         OBD_CHECK_ACTIVE(conn, exp);
 499         OBD_CHECK_OP(exp->exp_obd, setattr);
 500         OBD_COUNTER_INCREMENT(exp->exp_obd, setattr);
 501
 502         rc = OBP(exp->exp_obd, setattr)(conn, obdo, ea, oti);
 503         class_export_put(exp);
 504         RETURN(rc);
 505 }
 506
 507 static inline int obd_connect(struct lustre_handle *conn,
 508                               struct obd_device *obd, struct obd_uuid *cluuid)
 509 {
 510         int rc;
 511         ENTRY;
 512
 513         OBD_CHECK_DEV_ACTIVE(obd);
 514         OBD_CHECK_OP(obd, connect);
 515         OBD_COUNTER_INCREMENT(obd, connect);
 516
 517         rc = OBP(obd, connect)(conn, obd, cluuid);
 518         RETURN(rc);
 519 }
 520
 521 static inline int obd_disconnect(struct lustre_handle *conn, int failover)
 522 {
 523         struct obd_export *exp;
 524         int rc;
 525         ENTRY;
 526
 527         OBD_CHECK_SETUP(conn, exp);
 528         OBD_CHECK_OP(exp->exp_obd, disconnect);
 529         OBD_COUNTER_INCREMENT(exp->exp_obd, disconnect);
 530
 531         rc = OBP(exp->exp_obd, disconnect)(conn, failover);
 532         class_export_put(exp);
 533         RETURN(rc);
 534 }
 535
 536 static inline void obd_destroy_export(struct obd_export *exp)
 537 {
 538         ENTRY;
 539         if (OBP(exp->exp_obd, destroy_export))
 540                 OBP(exp->exp_obd, destroy_export)(exp);
 541         EXIT;
 542 }
 543
 544 static inline int obd_statfs(struct obd_export *exp, struct obd_statfs *osfs)
 545 {
 546         int rc;
 547         ENTRY;
 548
 549         OBD_CHECK_OP(exp->exp_obd, statfs);
 550         OBD_COUNTER_INCREMENT(exp->exp_obd, statfs);
 551
 552         rc = OBP(exp->exp_obd, statfs)(exp, osfs);
 553         RETURN(rc);
 554 }
 555
 556 static inline int obd_syncfs(struct obd_export *exp)
 557 {
 558         int rc;
 559         ENTRY;
 560
 561         OBD_CHECK_OP(exp->exp_obd, syncfs);
 562         OBD_COUNTER_INCREMENT(exp->exp_obd, syncfs);
 563
 564         rc = OBP(exp->exp_obd, syncfs)(exp);
 565         RETURN(rc);
 566 }
 567
 568 static inline int obd_punch(struct lustre_handle *conn, struct obdo *oa,
 569                             struct lov_stripe_md *ea, obd_size start,
 570                             obd_size end, struct obd_trans_info *oti)
 571 {
 572         struct obd_export *exp;
 573         int rc;
 574         ENTRY;
 575
 576         OBD_CHECK_ACTIVE(conn, exp);
 577         OBD_CHECK_OP(exp->exp_obd, punch);
 578         OBD_COUNTER_INCREMENT(exp->exp_obd, punch);
 579
 580         rc = OBP(exp->exp_obd, punch)(conn, oa, ea, start, end, oti);
 581         class_export_put(exp);
 582         RETURN(rc);
 583 }
 584
 585 static inline int obd_brw(int cmd, struct lustre_handle *conn,
 586                           struct lov_stripe_md *ea, obd_count oa_bufs,
 587                           struct brw_page *pg, struct obd_trans_info *oti)
 588 {
 589         struct obd_export *exp;
 590         int rc;
 591         ENTRY;
 592
 593         OBD_CHECK_ACTIVE(conn, exp);
 594         OBD_CHECK_OP(exp->exp_obd, brw);
 595         OBD_COUNTER_INCREMENT(exp->exp_obd, brw);
 596
 597         if (!(cmd & (OBD_BRW_RWMASK | OBD_BRW_CHECK))) {
 598                 CERROR("obd_brw: cmd must be OBD_BRW_READ, OBD_BRW_WRITE, "
 599                        "or OBD_BRW_CHECK\n");
 600                 LBUG();
 601         }
 602
 603         rc = OBP(exp->exp_obd, brw)(cmd, conn, ea, oa_bufs, pg, oti);
 604         class_export_put(exp);
 605         RETURN(rc);
 606 }
 607
 608 static inline int obd_brw_async(int cmd, struct lustre_handle *conn,
 609                                 struct lov_stripe_md *ea, obd_count oa_bufs,
 610                                 struct brw_page *pg,
 611                                 struct ptlrpc_request_set *set,
 612                                 struct obd_trans_info *oti)
 613 {
 614         struct obd_export *exp;
 615         int rc;
 616         ENTRY;
 617
 618         OBD_CHECK_ACTIVE(conn, exp);
 619         OBD_CHECK_OP(exp->exp_obd, brw_async);
 620         OBD_COUNTER_INCREMENT(exp->exp_obd, brw_async);
 621
 622         if (!(cmd & OBD_BRW_RWMASK)) {
 623                 CERROR("obd_brw: cmd must be OBD_BRW_READ or OBD_BRW_WRITE\n");
 624                 LBUG();
 625         }
 626
 627         rc = OBP(exp->exp_obd, brw_async)(cmd, conn, ea, oa_bufs, pg, set, oti);
 628         class_export_put(exp);
 629         RETURN(rc);
 630 }
 631
 632 static inline int obd_preprw(int cmd, struct obd_export *exp, struct obdo *obdo,
 633                              int objcount, struct obd_ioobj *obj,
 634                              int niocount, struct niobuf_remote *remote,
 635                              struct niobuf_local *local, void **desc_private,
 636                              struct obd_trans_info *oti)
 637 {
 638         int rc;
 639         ENTRY;
 640
 641         OBD_CHECK_OP(exp->exp_obd, preprw);
 642         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
 643
 644         rc = OBP(exp->exp_obd, preprw)(cmd, exp, obdo, objcount, obj, niocount,
 645                                        remote, local, desc_private, oti);
 646         RETURN(rc);
 647 }
 648
 649 static inline int obd_commitrw(int cmd, struct obd_export *exp,
 650                                int objcount, struct obd_ioobj *obj,
 651                                int niocount, struct niobuf_local *local,
 652                                void *desc_private, struct obd_trans_info *oti)
 653 {
 654         int rc;
 655         ENTRY;
 656
 657         OBD_CHECK_OP(exp->exp_obd, commitrw);
 658         OBD_COUNTER_INCREMENT(exp->exp_obd, commitrw);
 659
 660         rc = OBP(exp->exp_obd, commitrw)(cmd, exp, objcount, obj, niocount,
 661                                          local, desc_private, oti);
 662         RETURN(rc);
 663 }
 664
 665 static inline int obd_iocontrol(unsigned int cmd, struct lustre_handle *conn,
 666                                 int len, void *karg, void *uarg)
 667 {
 668         struct obd_export *exp;
 669         int rc;
 670         ENTRY;
 671
 672         OBD_CHECK_ACTIVE(conn, exp);
 673         OBD_CHECK_OP(exp->exp_obd, iocontrol);
 674         OBD_COUNTER_INCREMENT(exp->exp_obd, iocontrol);
 675
 676         rc = OBP(exp->exp_obd, iocontrol)(cmd, conn, len, karg, uarg);
 677         class_export_put(exp);
 678         RETURN(rc);
 679 }
 680
 681 static inline int obd_enqueue(struct lustre_handle *conn,
 682                               struct lov_stripe_md *ea,
 683                               struct lustre_handle *parent_lock,
 684                               __u32 type, void *cookie, int cookielen,
 685                               __u32 mode, int *flags, void *cb, void *data,
 686                               struct lustre_handle *lockh)
 687 {
 688         struct obd_export *exp;
 689         int rc;
 690         ENTRY;
 691
 692         OBD_CHECK_ACTIVE(conn, exp);
 693         OBD_CHECK_OP(exp->exp_obd, enqueue);
 694         OBD_COUNTER_INCREMENT(exp->exp_obd, enqueue);
 695
 696         rc = OBP(exp->exp_obd, enqueue)(conn, ea, parent_lock, type,
 697                                         cookie, cookielen, mode, flags, cb,
 698                                         data, lockh);
 699         class_export_put(exp);
 700         RETURN(rc);
 701 }
 702
 703 static inline int obd_match(struct lustre_handle *conn,
 704                             struct lov_stripe_md *ea, __u32 type, void *cookie,
 705                             int cookielen, __u32 mode, int *flags, void *data,
 706                             struct lustre_handle *lockh)
 707 {
 708         struct obd_export *exp;
 709         int rc;
 710         ENTRY;
 711
 712         OBD_CHECK_ACTIVE(conn, exp);
 713         OBD_CHECK_OP(exp->exp_obd, match);
 714         OBD_COUNTER_INCREMENT(exp->exp_obd, match);
 715
 716         rc = OBP(exp->exp_obd, match)(conn, ea, type, cookie, cookielen, mode,
 717                                       flags, data, lockh);
 718         class_export_put(exp);
 719         RETURN(rc);
 720 }
 721
 722
 723 static inline int obd_cancel(struct lustre_handle *conn,
 724                              struct lov_stripe_md *ea, __u32 mode,
 725                              struct lustre_handle *lockh)
 726 {
 727         struct obd_export *exp;
 728         int rc;
 729         ENTRY;
 730
 731         OBD_CHECK_ACTIVE(conn, exp);
 732         OBD_CHECK_OP(exp->exp_obd, cancel);
 733         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel);
 734
 735         rc = OBP(exp->exp_obd, cancel)(conn, ea, mode, lockh);
 736         class_export_put(exp);
 737         RETURN(rc);
 738 }
 739
 740 static inline int obd_cancel_unused(struct lustre_handle *conn,
 741                                     struct lov_stripe_md *ea, int flags,
 742                                     void *opaque)
 743 {
 744         struct obd_export *exp;
 745         int rc;
 746         ENTRY;
 747
 748         OBD_CHECK_ACTIVE(conn, exp);
 749         OBD_CHECK_OP(exp->exp_obd, cancel_unused);
 750         OBD_COUNTER_INCREMENT(exp->exp_obd, cancel_unused);
 751
 752         rc = OBP(exp->exp_obd, cancel_unused)(conn, ea, flags, opaque);
 753         class_export_put(exp);
 754         RETURN(rc);
 755 }
 756
 757 static inline int obd_san_preprw(int cmd, struct lustre_handle *conn,
 758                                  int objcount, struct obd_ioobj *obj,
 759                                  int niocount, struct niobuf_remote *remote)
 760 {
 761         struct obd_export *exp;
 762         int rc;
 763
 764         OBD_CHECK_ACTIVE(conn, exp);
 765         OBD_CHECK_OP(exp->exp_obd, preprw);
 766         OBD_COUNTER_INCREMENT(exp->exp_obd, preprw);
 767
 768         rc = OBP(exp->exp_obd, san_preprw)(cmd, conn, objcount, obj,
 769                                            niocount, remote);
 770         class_export_put(exp);
 771         RETURN(rc);
 772 }
 773
 774 static inline int obd_mark_page_dirty(struct lustre_handle *conn,
 775                                       struct lov_stripe_md *lsm,
 776                                       unsigned long offset)
 777 {
 778         struct obd_export *exp;
 779         int rc;
 780
 781         OBD_CHECK_SETUP(conn, exp);
 782         OBD_CHECK_OP(exp->exp_obd, mark_page_dirty);
 783
 784         rc = OBP(exp->exp_obd, mark_page_dirty)(conn, lsm, offset);
 785         class_export_put(exp);
 786         RETURN(rc);
 787 }
 788
 789 static inline int obd_clear_dirty_pages(struct lustre_handle *conn,
 790                                         struct lov_stripe_md *lsm,
 791                                         unsigned long start,
 792                                         unsigned long end,
 793                                         unsigned long *cleared)
 794 {
 795         struct obd_export *exp;
 796         int rc;
 797
 798         OBD_CHECK_SETUP(conn, exp);
 799         OBD_CHECK_OP(exp->exp_obd, clear_dirty_pages);
 800
 801         rc = OBP(exp->exp_obd, clear_dirty_pages)(conn, lsm, start, end,
 802                                                   cleared);
 803         class_export_put(exp);
 804         RETURN(rc);
 805 }
 806
 807 static inline int obd_last_dirty_offset(struct lustre_handle *conn,
 808                                       struct lov_stripe_md *lsm,
 809                                       unsigned long *offset)
 810 {
 811         struct obd_export *exp;
 812         int rc;
 813
 814         OBD_CHECK_SETUP(conn, exp);
 815         OBD_CHECK_OP(exp->exp_obd, last_dirty_offset);
 816
 817         rc = OBP(exp->exp_obd, last_dirty_offset)(conn, lsm, offset);
 818         class_export_put(exp);
 819         RETURN(rc);
 820 }
 821
 822 /* OBD Metadata Support */
 823
 824 extern int obd_init_caches(void);
 825 extern void obd_cleanup_caches(void);
 826
 827 static inline struct lustre_handle *obdo_handle(struct obdo *oa)
 828 {
 829         return (struct lustre_handle *)&oa->o_inline;
 830 }
 831
 832 /* support routines */
 833 extern kmem_cache_t *obdo_cachep;
 834 static inline struct obdo *obdo_alloc(void)
 835 {
 836         struct obdo *oa;
 837
 838         oa = kmem_cache_alloc(obdo_cachep, SLAB_KERNEL);
 839         if (oa == NULL)
 840                 LBUG();
 841         memset(oa, 0, sizeof (*oa));
 842
 843         return oa;
 844 }
 845
 846 static inline void obdo_free(struct obdo *oa)
 847 {
 848         if (!oa)
 849                 return;
 850         kmem_cache_free(obdo_cachep, oa);
 851 }
 852
 853 #if !defined(__KERNEL__) || (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
 854 #define to_kdev_t(dev) dev
 855 #define kdev_t_to_nr(dev) dev
 856 #endif
 857
 858 #ifdef __KERNEL__
 859 static inline void obdo_from_iattr(struct obdo *oa, struct iattr *attr)
 860 {
 861         unsigned int ia_valid = attr->ia_valid;
 862
 863         if (ia_valid & ATTR_ATIME) {
 864                 oa->o_atime = LTIME_S(attr->ia_atime);
 865                 oa->o_valid |= OBD_MD_FLATIME;
 866         }
 867         if (ia_valid & ATTR_MTIME) {
 868                 oa->o_mtime = LTIME_S(attr->ia_mtime);
 869                 oa->o_valid |= OBD_MD_FLMTIME;
 870         }
 871         if (ia_valid & ATTR_CTIME) {
 872                 oa->o_ctime = LTIME_S(attr->ia_ctime);
 873                 oa->o_valid |= OBD_MD_FLCTIME;
 874         }
 875         if (ia_valid & ATTR_SIZE) {
 876                 oa->o_size = attr->ia_size;
 877                 oa->o_valid |= OBD_MD_FLSIZE;
 878         }
 879         if (ia_valid & ATTR_MODE) {
 880                 oa->o_mode = attr->ia_mode;
 881                 oa->o_valid |= OBD_MD_FLTYPE | OBD_MD_FLMODE;
 882                 if (!in_group_p(oa->o_gid) && !capable(CAP_FSETID))
 883                         oa->o_mode &= ~S_ISGID;
 884         }
 885         if (ia_valid & ATTR_UID) {
 886                 oa->o_uid = attr->ia_uid;
 887                 oa->o_valid |= OBD_MD_FLUID;
 888         }
 889         if (ia_valid & ATTR_GID) {
 890                 oa->o_gid = attr->ia_gid;
 891                 oa->o_valid |= OBD_MD_FLGID;
 892         }
 893 }
 894
 895
 896 static inline void iattr_from_obdo(struct iattr *attr, struct obdo *oa,
 897                                    obd_flag valid)
 898 {
 899         memset(attr, 0, sizeof(*attr));
 900         if (valid & OBD_MD_FLATIME) {
 901                 LTIME_S(attr->ia_atime) = oa->o_atime;
 902                 attr->ia_valid |= ATTR_ATIME;
 903         }
 904         if (valid & OBD_MD_FLMTIME) {
 905                 LTIME_S(attr->ia_mtime) = oa->o_mtime;
 906                 attr->ia_valid |= ATTR_MTIME;
 907         }
 908         if (valid & OBD_MD_FLCTIME) {
 909                 LTIME_S(attr->ia_ctime) = oa->o_ctime;
 910                 attr->ia_valid |= ATTR_CTIME;
 911         }
 912         if (valid & OBD_MD_FLSIZE) {
 913                 attr->ia_size = oa->o_size;
 914                 attr->ia_valid |= ATTR_SIZE;
 915         }
 916         if (valid & OBD_MD_FLTYPE) {
 917                 attr->ia_mode = (attr->ia_mode & ~S_IFMT)|(oa->o_mode & S_IFMT);
 918                 attr->ia_valid |= ATTR_MODE;
 919         }
 920         if (valid & OBD_MD_FLMODE) {
 921                 attr->ia_mode = (attr->ia_mode & S_IFMT)|(oa->o_mode & ~S_IFMT);
 922                 attr->ia_valid |= ATTR_MODE;
 923                 if (!in_group_p(oa->o_gid) && !capable(CAP_FSETID))
 924                         attr->ia_mode &= ~S_ISGID;
 925         }
 926         if (valid & OBD_MD_FLUID)
 927         {
 928                 attr->ia_uid = oa->o_uid;
 929                 attr->ia_valid |= ATTR_UID;
 930         }
 931         if (valid & OBD_MD_FLGID) {
 932                 attr->ia_gid = oa->o_gid;
 933                 attr->ia_valid |= ATTR_GID;
 934         }
 935 }
 936
 937
 938 /* WARNING: the file systems must take care not to tinker with
 939    attributes they don't manage (such as blocks). */
 940
 941
 942 static inline void obdo_from_inode(struct obdo *dst, struct inode *src,
 943                                    obd_flag valid)
 944 {
 945         if (valid & OBD_MD_FLATIME)
 946                 dst->o_atime = LTIME_S(src->i_atime);
 947         if (valid & OBD_MD_FLMTIME)
 948                 dst->o_mtime = LTIME_S(src->i_mtime);
 949         if (valid & OBD_MD_FLCTIME)
 950                 dst->o_ctime = LTIME_S(src->i_ctime);
 951         if (valid & OBD_MD_FLSIZE)
 952                 dst->o_size = src->i_size;
 953         if (valid & OBD_MD_FLBLOCKS)   /* allocation of space */
 954                 dst->o_blocks = src->i_blocks;
 955         if (valid & OBD_MD_FLBLKSZ)
 956                 dst->o_blksize = src->i_blksize;
 957         if (valid & OBD_MD_FLTYPE)
 958                 dst->o_mode = (dst->o_mode & ~S_IFMT) | (src->i_mode & S_IFMT);
 959         if (valid & OBD_MD_FLMODE)
 960                 dst->o_mode = (dst->o_mode & S_IFMT) | (src->i_mode & ~S_IFMT);
 961         if (valid & OBD_MD_FLUID)
 962                 dst->o_uid = src->i_uid;
 963         if (valid & OBD_MD_FLGID)
 964                 dst->o_gid = src->i_gid;
 965         if (valid & OBD_MD_FLFLAGS)
 966                 dst->o_flags = src->i_flags;
 967         if (valid & OBD_MD_FLNLINK)
 968                 dst->o_nlink = src->i_nlink;
 969         if (valid & OBD_MD_FLGENER)
 970                 dst->o_generation = src->i_generation;
 971         if (valid & OBD_MD_FLRDEV)
 972                 dst->o_rdev = (__u32)kdev_t_to_nr(src->i_rdev);
 973
 974         dst->o_valid |= (valid & ~OBD_MD_FLID);
 975 }
 976
 977 static inline void obdo_refresh_inode(struct inode *dst, struct obdo *src,
 978                                       obd_flag valid)
 979 {
 980         valid &= src->o_valid;
 981
 982         if (valid & OBD_MD_FLATIME && src->o_atime > LTIME_S(dst->i_atime))
 983                 LTIME_S(dst->i_atime) = src->o_atime;
 984         if (valid & OBD_MD_FLMTIME && src->o_mtime > LTIME_S(dst->i_mtime))
 985                 LTIME_S(dst->i_mtime) = src->o_mtime;
 986         if (valid & OBD_MD_FLCTIME && src->o_ctime > LTIME_S(dst->i_ctime))
 987                 LTIME_S(dst->i_ctime) = src->o_ctime;
 988         if (valid & OBD_MD_FLSIZE && src->o_size > dst->i_size)
 989                 dst->i_size = src->o_size;
 990         /* allocation of space */
 991         if (valid & OBD_MD_FLBLOCKS && src->o_blocks > dst->i_blocks)
 992                 dst->i_blocks = src->o_blocks;
 993 }
 994
 995 static inline void obdo_to_inode(struct inode *dst, struct obdo *src,
 996                                  obd_flag valid)
 997 {
 998         valid &= src->o_valid;
 999
1000         if (valid & OBD_MD_FLATIME)
1001                 LTIME_S(dst->i_atime) = src->o_atime;
1002         if (valid & OBD_MD_FLMTIME)
1003                 LTIME_S(dst->i_mtime) = src->o_mtime;
1004         if (valid & OBD_MD_FLCTIME && src->o_ctime > LTIME_S(dst->i_ctime))
1005                 LTIME_S(dst->i_ctime) = src->o_ctime;
1006         if (valid & OBD_MD_FLSIZE)
1007                 dst->i_size = src->o_size;
1008         if (valid & OBD_MD_FLBLOCKS) /* allocation of space */
1009                 dst->i_blocks = src->o_blocks;
1010         if (valid & OBD_MD_FLBLKSZ)
1011                 dst->i_blksize = src->o_blksize;
1012         if (valid & OBD_MD_FLTYPE)
1013                 dst->i_mode = (dst->i_mode & ~S_IFMT) | (src->o_mode & S_IFMT);
1014         if (valid & OBD_MD_FLMODE)
1015                 dst->i_mode = (dst->i_mode & S_IFMT) | (src->o_mode & ~S_IFMT);
1016         if (valid & OBD_MD_FLUID)
1017                 dst->i_uid = src->o_uid;
1018         if (valid & OBD_MD_FLGID)
1019                 dst->i_gid = src->o_gid;
1020         if (valid & OBD_MD_FLFLAGS)
1021                 dst->i_flags = src->o_flags;
1022         if (valid & OBD_MD_FLNLINK)
1023                 dst->i_nlink = src->o_nlink;
1024         if (valid & OBD_MD_FLGENER)
1025                 dst->i_generation = src->o_generation;
1026         if (valid & OBD_MD_FLRDEV)
1027                 dst->i_rdev = to_kdev_t(src->o_rdev);
1028 }
1029 #endif
1030
1031 static inline void obdo_cpy_md(struct obdo *dst, struct obdo *src,
1032                                obd_flag valid)
1033 {
1034 #ifdef __KERNEL__
1035         CDEBUG(D_INODE, "src obdo %Ld valid 0x%x, dst obdo %Ld\n",
1036                (unsigned long long)src->o_id, src->o_valid,
1037                (unsigned long long)dst->o_id);
1038 #endif
1039         if (valid & OBD_MD_FLATIME)
1040                 dst->o_atime = src->o_atime;
1041         if (valid & OBD_MD_FLMTIME)
1042                 dst->o_mtime = src->o_mtime;
1043         if (valid & OBD_MD_FLCTIME)
1044                 dst->o_ctime = src->o_ctime;
1045         if (valid & OBD_MD_FLSIZE)
1046                 dst->o_size = src->o_size;
1047         if (valid & OBD_MD_FLBLOCKS) /* allocation of space */
1048                 dst->o_blocks = src->o_blocks;
1049         if (valid & OBD_MD_FLBLKSZ)
1050                 dst->o_blksize = src->o_blksize;
1051         if (valid & OBD_MD_FLTYPE)
1052                 dst->o_mode = (dst->o_mode & ~S_IFMT) | (src->o_mode & S_IFMT);
1053         if (valid & OBD_MD_FLMODE)
1054                 dst->o_mode = (dst->o_mode & S_IFMT) | (src->o_mode & ~S_IFMT);
1055         if (valid & OBD_MD_FLUID)
1056                 dst->o_uid = src->o_uid;
1057         if (valid & OBD_MD_FLGID)
1058                 dst->o_gid = src->o_gid;
1059         if (valid & OBD_MD_FLFLAGS)
1060                 dst->o_flags = src->o_flags;
1061         /*
1062         if (valid & OBD_MD_FLOBDFLG)
1063                 dst->o_obdflags = src->o_obdflags;
1064         */
1065         if (valid & OBD_MD_FLNLINK)
1066                 dst->o_nlink = src->o_nlink;
1067         if (valid & OBD_MD_FLGENER)
1068                 dst->o_generation = src->o_generation;
1069         if (valid & OBD_MD_FLRDEV)
1070                 dst->o_rdev = src->o_rdev;
1071         if (valid & OBD_MD_FLINLINE &&
1072              src->o_obdflags & OBD_FL_INLINEDATA) {
1073                 memcpy(dst->o_inline, src->o_inline, sizeof(src->o_inline));
1074                 dst->o_obdflags |= OBD_FL_INLINEDATA;
1075         }
1076
1077         dst->o_valid |= valid;
1078 }
1079
1080
1081 /* returns FALSE if comparison (by flags) is same, TRUE if changed */
1082 static inline int obdo_cmp_md(struct obdo *dst, struct obdo *src,
1083                               obd_flag compare)
1084 {
1085         int res = 0;
1086
1087         if ( compare & OBD_MD_FLATIME )
1088                 res = (res || (dst->o_atime != src->o_atime));
1089         if ( compare & OBD_MD_FLMTIME )
1090                 res = (res || (dst->o_mtime != src->o_mtime));
1091         if ( compare & OBD_MD_FLCTIME )
1092                 res = (res || (dst->o_ctime != src->o_ctime));
1093         if ( compare & OBD_MD_FLSIZE )
1094                 res = (res || (dst->o_size != src->o_size));
1095         if ( compare & OBD_MD_FLBLOCKS ) /* allocation of space */
1096                 res = (res || (dst->o_blocks != src->o_blocks));
1097         if ( compare & OBD_MD_FLBLKSZ )
1098                 res = (res || (dst->o_blksize != src->o_blksize));
1099         if ( compare & OBD_MD_FLTYPE )
1100                 res = (res || (((dst->o_mode ^ src->o_mode) & S_IFMT) != 0));
1101         if ( compare & OBD_MD_FLMODE )
1102                 res = (res || (((dst->o_mode ^ src->o_mode) & ~S_IFMT) != 0));
1103         if ( compare & OBD_MD_FLUID )
1104                 res = (res || (dst->o_uid != src->o_uid));
1105         if ( compare & OBD_MD_FLGID )
1106                 res = (res || (dst->o_gid != src->o_gid));
1107         if ( compare & OBD_MD_FLFLAGS )
1108                 res = (res || (dst->o_flags != src->o_flags));
1109         if ( compare & OBD_MD_FLNLINK )
1110                 res = (res || (dst->o_nlink != src->o_nlink));
1111         if ( compare & OBD_MD_FLGENER )
1112                 res = (res || (dst->o_generation != src->o_generation));
1113         /* XXX Don't know if thses should be included here - wasn't previously
1114         if ( compare & OBD_MD_FLINLINE )
1115                 res = (res || memcmp(dst->o_inline, src->o_inline));
1116         */
1117         return res;
1118 }
1119
1120 /* I'm as embarrassed about this as you are.
1121  *
1122  * <shaver> // XXX do not look into _superhack with remaining eye
1123  * <shaver> // XXX if this were any uglier, I'd get my own show on MTV */
1124 extern int (*ptlrpc_put_connection_superhack)(struct ptlrpc_connection *c);
1125 extern void (*ptlrpc_abort_inflight_superhack)(struct obd_import *imp);
1126
1127 struct obd_statfs;
1128 struct statfs;
1129 void statfs_pack(struct obd_statfs *osfs, struct statfs *sfs);
1130 void statfs_unpack(struct statfs *sfs, struct obd_statfs *osfs);
1131
1132 struct obd_class_user_state {
1133         struct obd_device     *ocus_current_obd;
1134         struct list_head       ocus_conns;
1135 };
1136
1137 struct obd_class_user_conn {
1138         struct list_head       ocuc_chain;
1139         struct lustre_handle   ocuc_conn;
1140 };
1141
1142
1143 /* sysctl.c */
1144 extern void obd_sysctl_init (void);
1145 extern void obd_sysctl_clean (void);
1146
1147 /* uuid.c  */
1148 typedef __u8 class_uuid_t[16];
1149 //int class_uuid_parse(struct obd_uuid in, class_uuid_t out);
1150 void class_uuid_unparse(class_uuid_t in, struct obd_uuid *out);
1151
1152 /* lustre_peer.c    */
1153 int lustre_uuid_to_peer(char *uuid, struct lustre_peer *peer);
1154 int class_add_uuid(char *uuid, __u64 nid, __u32 nal);
1155 int class_del_uuid (char *uuid);
1156 void class_init_uuidlist(void);
1157 void class_exit_uuidlist(void);
1158
1159 #endif /* __LINUX_OBD_CLASS_H */