lustre/mdc/mdc_request.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36
  37 #ifndef EXPORT_SYMTAB
  38 # define EXPORT_SYMTAB
  39 #endif
  40 #define DEBUG_SUBSYSTEM S_MDC
  41
  42 #ifdef __KERNEL__
  43 # include <linux/module.h>
  44 # include <linux/pagemap.h>
  45 # include <linux/miscdevice.h>
  46 # include <linux/init.h>
  47 #else
  48 # include <liblustre.h>
  49 #endif
  50
  51 #include <lustre_acl.h>
  52 #include <obd_class.h>
  53 #include <lustre_dlm.h>
  54 #include <lustre_fid.h>
  55 #include <md_object.h>
  56 #include <lprocfs_status.h>
  57 #include <lustre_param.h>
  58 #include "mdc_internal.h"
  59
  60 #define REQUEST_MINOR 244
  61
  62 static quota_interface_t *quota_interface;
  63 extern quota_interface_t mdc_quota_interface;
  64
  65 static int mdc_cleanup(struct obd_device *obd);
  66
  67 int mdc_unpack_capa(struct obd_export *exp, struct ptlrpc_request *req,
  68                     const struct req_msg_field *field, struct obd_capa **oc)
  69 {
  70         struct lustre_capa *capa;
  71         struct obd_capa *c;
  72         ENTRY;
  73
  74         /* swabbed already in mdc_enqueue */
  75         capa = req_capsule_server_get(&req->rq_pill, field);
  76         if (capa == NULL)
  77                 RETURN(-EPROTO);
  78
  79         c = alloc_capa(CAPA_SITE_CLIENT);
  80         if (IS_ERR(c)) {
  81                 CDEBUG(D_INFO, "alloc capa failed!\n");
  82                 RETURN(PTR_ERR(c));
  83         } else {
  84                 c->c_capa = *capa;
  85                 *oc = c;
  86                 RETURN(0);
  87         }
  88 }
  89
  90 /* Helper that implements most of mdc_getstatus and signal_completed_replay. */
  91 /* XXX this should become mdc_get_info("key"), sending MDS_GET_INFO RPC */
  92 static int send_getstatus(struct obd_import *imp, struct lu_fid *rootfid,
  93                           struct obd_capa **pc, int level, int msg_flags)
  94 {
  95         struct ptlrpc_request *req;
  96         struct mdt_body       *body;
  97         int                    rc;
  98         ENTRY;
  99
 100         req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_GETSTATUS,
 101                                         LUSTRE_MDS_VERSION, MDS_GETSTATUS);
 102         if (req == NULL)
 103                 RETURN(-ENOMEM);
 104
 105         mdc_pack_body(req, NULL, NULL, 0, 0, -1, 0);
 106         lustre_msg_add_flags(req->rq_reqmsg, msg_flags);
 107         req->rq_send_state = level;
 108
 109         ptlrpc_request_set_replen(req);
 110
 111         rc = ptlrpc_queue_wait(req);
 112         if (rc)
 113                 GOTO(out, rc);
 114
 115         body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
 116         if (body == NULL)
 117                 GOTO(out, rc = -EPROTO);
 118
 119         if (body->valid & OBD_MD_FLMDSCAPA) {
 120                 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA1, pc);
 121                 if (rc)
 122                         GOTO(out, rc);
 123         }
 124
 125         *rootfid = body->fid1;
 126         CDEBUG(D_NET,
 127                "root fid="DFID", last_committed="LPU64", last_xid="LPU64"\n",
 128                PFID(rootfid),
 129                lustre_msg_get_last_committed(req->rq_repmsg),
 130                lustre_msg_get_last_xid(req->rq_repmsg));
 131         EXIT;
 132 out:
 133         ptlrpc_req_finished(req);
 134         return rc;
 135 }
 136
 137 /* This should be mdc_get_info("rootfid") */
 138 int mdc_getstatus(struct obd_export *exp, struct lu_fid *rootfid,
 139                   struct obd_capa **pc)
 140 {
 141         return send_getstatus(class_exp2cliimp(exp), rootfid, pc,
 142                               LUSTRE_IMP_FULL, 0);
 143 }
 144
 145 /*
 146  * This function now is known to always saying that it will receive 4 buffers
 147  * from server. Even for cases when acl_size and md_size is zero, RPC header
 148  * will contain 4 fields and RPC itself will contain zero size fields. This is
 149  * because mdt_getattr*() _always_ returns 4 fields, but if acl is not needed
 150  * and thus zero, it shrinks it, making zero size. The same story about
 151  * md_size. And this is course of problem when client waits for smaller number
 152  * of fields. This issue will be fixed later when client gets aware of RPC
 153  * layouts.  --umka
 154  */
 155 static int mdc_getattr_common(struct obd_export *exp,
 156                               struct ptlrpc_request *req)
 157 {
 158         struct req_capsule *pill = &req->rq_pill;
 159         struct mdt_body    *body;
 160         void               *eadata;
 161         int                 rc;
 162         ENTRY;
 163
 164         /* Request message already built. */
 165         rc = ptlrpc_queue_wait(req);
 166         if (rc != 0)
 167                 RETURN(rc);
 168
 169         /* sanity check for the reply */
 170         body = req_capsule_server_get(pill, &RMF_MDT_BODY);
 171         if (body == NULL)
 172                 RETURN(-EPROTO);
 173
 174         CDEBUG(D_NET, "mode: %o\n", body->mode);
 175
 176         if (body->eadatasize != 0) {
 177                 eadata = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
 178                                                       body->eadatasize);
 179                 if (eadata == NULL)
 180                         RETURN(-EPROTO);
 181         }
 182
 183         if (body->valid & OBD_MD_FLRMTPERM) {
 184                 struct mdt_remote_perm *perm;
 185
 186                 LASSERT(client_is_remote(exp));
 187                 perm = req_capsule_server_swab_get(pill, &RMF_ACL,
 188                                                 lustre_swab_mdt_remote_perm);
 189                 if (perm == NULL)
 190                         RETURN(-EPROTO);
 191         }
 192
 193         if (body->valid & OBD_MD_FLMDSCAPA) {
 194                 struct lustre_capa *capa;
 195                 capa = req_capsule_server_get(pill, &RMF_CAPA1);
 196                 if (capa == NULL)
 197                         RETURN(-EPROTO);
 198         }
 199
 200         RETURN(0);
 201 }
 202
 203 int mdc_getattr(struct obd_export *exp, const struct lu_fid *fid,
 204                 struct obd_capa *oc, obd_valid valid, int ea_size,
 205                 struct ptlrpc_request **request)
 206 {
 207         struct ptlrpc_request *req;
 208         int                    rc;
 209         ENTRY;
 210
 211         *request = NULL;
 212         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
 213         if (req == NULL)
 214                 RETURN(-ENOMEM);
 215
 216         mdc_set_capa_size(req, &RMF_CAPA1, oc);
 217
 218         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
 219         if (rc) {
 220                 ptlrpc_request_free(req);
 221                 RETURN(rc);
 222         }
 223
 224         /* MDS_BFLAG_EXT_FLAGS: request "new" flags(bug 9486) */
 225         mdc_pack_body(req, fid, oc, valid, ea_size, -1, MDS_BFLAG_EXT_FLAGS);
 226
 227         req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER, ea_size);
 228         if (valid & OBD_MD_FLRMTPERM) {
 229                 LASSERT(client_is_remote(exp));
 230                 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
 231                                      sizeof(struct mdt_remote_perm));
 232         }
 233         ptlrpc_request_set_replen(req);
 234
 235         rc = mdc_getattr_common(exp, req);
 236         if (rc)
 237                 ptlrpc_req_finished(req);
 238         else
 239                 *request = req;
 240         RETURN(rc);
 241 }
 242
 243 int mdc_getattr_name(struct obd_export *exp, const struct lu_fid *fid,
 244                      struct obd_capa *oc, const char *filename, int namelen,
 245                      obd_valid valid, int ea_size, __u32 suppgid,
 246                      struct ptlrpc_request **request)
 247 {
 248         struct ptlrpc_request *req;
 249         int                    rc;
 250         ENTRY;
 251
 252         *request = NULL;
 253         req = ptlrpc_request_alloc(class_exp2cliimp(exp),
 254                                    &RQF_MDS_GETATTR_NAME);
 255         if (req == NULL)
 256                 RETURN(-ENOMEM);
 257
 258         mdc_set_capa_size(req, &RMF_CAPA1, oc);
 259         req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT, namelen);
 260
 261         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR_NAME);
 262         if (rc) {
 263                 ptlrpc_request_free(req);
 264                 RETURN(rc);
 265         }
 266
 267         /* MDS_BFLAG_EXT_FLAGS: request "new" flags(bug 9486) */
 268         mdc_pack_body(req, fid, oc, valid, ea_size, suppgid,
 269                       MDS_BFLAG_EXT_FLAGS);
 270
 271         if (filename) {
 272                 char *name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
 273                 LASSERT(strnlen(filename, namelen) == namelen - 1);
 274                 memcpy(name, filename, namelen);
 275         }
 276
 277         req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER, ea_size);
 278         ptlrpc_request_set_replen(req);
 279
 280         rc = mdc_getattr_common(exp, req);
 281         if (rc)
 282                 ptlrpc_req_finished(req);
 283         else
 284                 *request = req;
 285         RETURN(rc);
 286 }
 287
 288 static int mdc_is_subdir(struct obd_export *exp,
 289                          const struct lu_fid *pfid,
 290                          const struct lu_fid *cfid,
 291                          struct ptlrpc_request **request)
 292 {
 293         struct ptlrpc_request  *req;
 294         int                     rc;
 295
 296         ENTRY;
 297
 298         *request = NULL;
 299         req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
 300                                         &RQF_MDS_IS_SUBDIR, LUSTRE_MDS_VERSION,
 301                                         MDS_IS_SUBDIR);
 302         if (req == NULL)
 303                 RETURN(-ENOMEM);
 304
 305         mdc_is_subdir_pack(req, pfid, cfid, 0);
 306         ptlrpc_request_set_replen(req);
 307
 308         rc = ptlrpc_queue_wait(req);
 309         if (rc && rc != -EREMOTE)
 310                 ptlrpc_req_finished(req);
 311         else
 312                 *request = req;
 313         RETURN(rc);
 314 }
 315
 316 static int mdc_xattr_common(struct obd_export *exp,const struct req_format *fmt,
 317                             const struct lu_fid *fid,
 318                             struct obd_capa *oc, int opcode, obd_valid valid,
 319                             const char *xattr_name, const char *input,
 320                             int input_size, int output_size, int flags,
 321                             __u32 suppgid, struct ptlrpc_request **request)
 322 {
 323         struct ptlrpc_request *req;
 324         int   xattr_namelen = 0;
 325         char *tmp;
 326         int   rc;
 327         ENTRY;
 328
 329         *request = NULL;
 330         req = ptlrpc_request_alloc(class_exp2cliimp(exp), fmt);
 331         if (req == NULL)
 332                 RETURN(-ENOMEM);
 333
 334         mdc_set_capa_size(req, &RMF_CAPA1, oc);
 335         if (xattr_name) {
 336                 xattr_namelen = strlen(xattr_name) + 1;
 337                 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
 338                                      xattr_namelen);
 339         }
 340         if (input_size) {
 341                 LASSERT(input);
 342                 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
 343                                      input_size);
 344         }
 345
 346         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, opcode);
 347         if (rc) {
 348                 ptlrpc_request_free(req);
 349                 RETURN(rc);
 350         }
 351
 352         if (opcode == MDS_REINT) {
 353                 struct mdt_rec_setxattr *rec;
 354
 355                 CLASSERT(sizeof(struct mdt_rec_setxattr) ==
 356                          sizeof(struct mdt_rec_reint));
 357                 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
 358                 rec->sx_opcode = REINT_SETXATTR;
 359                 /* TODO:
 360                  *  cfs_curproc_fs{u,g}id() should replace
 361                  *  current->fs{u,g}id for portability.
 362                  */
 363                 rec->sx_fsuid  = current->fsuid;
 364                 rec->sx_fsgid  = current->fsgid;
 365                 rec->sx_cap    = cfs_curproc_cap_pack();
 366                 rec->sx_suppgid1 = suppgid;
 367                 rec->sx_suppgid2 = -1;
 368                 rec->sx_fid    = *fid;
 369                 rec->sx_valid  = valid | OBD_MD_FLCTIME;
 370                 rec->sx_time   = cfs_time_current_sec();
 371                 rec->sx_size   = output_size;
 372                 rec->sx_flags  = flags;
 373
 374                 mdc_pack_capa(req, &RMF_CAPA1, oc);
 375         } else {
 376                 mdc_pack_body(req, fid, oc, valid, output_size, suppgid, flags);
 377         }
 378
 379         if (xattr_name) {
 380                 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
 381                 memcpy(tmp, xattr_name, xattr_namelen);
 382         }
 383         if (input_size) {
 384                 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
 385                 memcpy(tmp, input, input_size);
 386         }
 387
 388         if (req_capsule_has_field(&req->rq_pill, &RMF_EADATA, RCL_SERVER))
 389                 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
 390                                      RCL_SERVER, output_size);
 391         ptlrpc_request_set_replen(req);
 392
 393         /* make rpc */
 394         if (opcode == MDS_REINT)
 395                 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
 396
 397         rc = ptlrpc_queue_wait(req);
 398
 399         if (opcode == MDS_REINT)
 400                 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
 401
 402         if (rc)
 403                 ptlrpc_req_finished(req);
 404         else
 405                 *request = req;
 406         RETURN(rc);
 407 }
 408
 409 int mdc_setxattr(struct obd_export *exp, const struct lu_fid *fid,
 410                  struct obd_capa *oc, obd_valid valid, const char *xattr_name,
 411                  const char *input, int input_size, int output_size,
 412                  int flags, __u32 suppgid, struct ptlrpc_request **request)
 413 {
 414         return mdc_xattr_common(exp, &RQF_MDS_REINT_SETXATTR,
 415                                 fid, oc, MDS_REINT, valid, xattr_name,
 416                                 input, input_size, output_size, flags,
 417                                 suppgid, request);
 418 }
 419
 420 int mdc_getxattr(struct obd_export *exp, const struct lu_fid *fid,
 421                  struct obd_capa *oc, obd_valid valid, const char *xattr_name,
 422                  const char *input, int input_size, int output_size,
 423                  int flags, struct ptlrpc_request **request)
 424 {
 425         return mdc_xattr_common(exp, &RQF_MDS_GETXATTR,
 426                                 fid, oc, MDS_GETXATTR, valid, xattr_name,
 427                                 input, input_size, output_size, flags,
 428                                 -1, request);
 429 }
 430
 431 #ifdef CONFIG_FS_POSIX_ACL
 432 static int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md)
 433 {
 434         struct req_capsule     *pill = &req->rq_pill;
 435         struct mdt_body        *body = md->body;
 436         struct posix_acl       *acl;
 437         void                   *buf;
 438         int                     rc;
 439         ENTRY;
 440
 441         if (!body->aclsize)
 442                 RETURN(0);
 443
 444         buf = req_capsule_server_sized_get(pill, &RMF_ACL, body->aclsize);
 445
 446         if (!buf)
 447                 RETURN(-EPROTO);
 448
 449         acl = posix_acl_from_xattr(buf, body->aclsize);
 450         if (IS_ERR(acl)) {
 451                 rc = PTR_ERR(acl);
 452                 CERROR("convert xattr to acl: %d\n", rc);
 453                 RETURN(rc);
 454         }
 455
 456         rc = posix_acl_valid(acl);
 457         if (rc) {
 458                 CERROR("validate acl: %d\n", rc);
 459                 posix_acl_release(acl);
 460                 RETURN(rc);
 461         }
 462
 463         md->posix_acl = acl;
 464         RETURN(0);
 465 }
 466 #else
 467 #define mdc_unpack_acl(req, md) 0
 468 #endif
 469
 470 int mdc_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
 471                       struct obd_export *dt_exp, struct obd_export *md_exp,
 472                       struct lustre_md *md)
 473 {
 474         struct req_capsule *pill = &req->rq_pill;
 475         int rc;
 476         ENTRY;
 477
 478         LASSERT(md);
 479         memset(md, 0, sizeof(*md));
 480
 481         md->body = req_capsule_server_get(pill, &RMF_MDT_BODY);
 482         LASSERT(md->body != NULL);
 483
 484         if (md->body->valid & OBD_MD_FLEASIZE) {
 485                 int lmmsize;
 486                 struct lov_mds_md *lmm;
 487
 488                 if (!S_ISREG(md->body->mode)) {
 489                         CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, should be a "
 490                                "regular file, but is not\n");
 491                         GOTO(out, rc = -EPROTO);
 492                 }
 493
 494                 if (md->body->eadatasize == 0) {
 495                         CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, "
 496                                "but eadatasize 0\n");
 497                         GOTO(out, rc = -EPROTO);
 498                 }
 499                 lmmsize = md->body->eadatasize;
 500                 lmm = req_capsule_server_sized_get(pill, &RMF_MDT_MD, lmmsize);
 501                 if (!lmm)
 502                         GOTO(out, rc = -EPROTO);
 503
 504                 rc = obd_unpackmd(dt_exp, &md->lsm, lmm, lmmsize);
 505                 if (rc < 0)
 506                         GOTO(out, rc);
 507
 508                 if (rc < sizeof(*md->lsm)) {
 509                         CDEBUG(D_INFO, "lsm size too small: "
 510                                "rc < sizeof (*md->lsm) (%d < %d)\n",
 511                                rc, (int)sizeof(*md->lsm));
 512                         GOTO(out, rc = -EPROTO);
 513                 }
 514
 515         } else if (md->body->valid & OBD_MD_FLDIREA) {
 516                 int lmvsize;
 517                 struct lov_mds_md *lmv;
 518
 519                 if(!S_ISDIR(md->body->mode)) {
 520                         CDEBUG(D_INFO, "OBD_MD_FLDIREA set, should be a "
 521                                "directory, but is not\n");
 522                         GOTO(out, rc = -EPROTO);
 523                 }
 524
 525                 if (md->body->eadatasize == 0) {
 526                         CDEBUG(D_INFO, "OBD_MD_FLDIREA is set, "
 527                                "but eadatasize 0\n");
 528                         RETURN(-EPROTO);
 529                 }
 530                 if (md->body->valid & OBD_MD_MEA) {
 531                         lmvsize = md->body->eadatasize;
 532                         lmv = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
 533                                                            lmvsize);
 534                         if (!lmv)
 535                                 GOTO(out, rc = -EPROTO);
 536
 537                         rc = obd_unpackmd(md_exp, (void *)&md->mea, lmv,
 538                                           lmvsize);
 539                         if (rc < 0)
 540                                 GOTO(out, rc);
 541
 542                         if (rc < sizeof(*md->mea)) {
 543                                 CDEBUG(D_INFO, "size too small:  "
 544                                        "rc < sizeof(*md->mea) (%d < %d)\n",
 545                                         rc, (int)sizeof(*md->mea));
 546                                 GOTO(out, rc = -EPROTO);
 547                         }
 548                 }
 549         }
 550         rc = 0;
 551
 552         if (md->body->valid & OBD_MD_FLRMTPERM) {
 553                 /* remote permission */
 554                 LASSERT(client_is_remote(exp));
 555                 md->remote_perm = req_capsule_server_swab_get(pill, &RMF_ACL,
 556                                                 lustre_swab_mdt_remote_perm);
 557                 if (!md->remote_perm)
 558                         GOTO(out, rc = -EPROTO);
 559         }
 560         else if (md->body->valid & OBD_MD_FLACL) {
 561                 /* for ACL, it's possible that FLACL is set but aclsize is zero.
 562                  * only when aclsize != 0 there's an actual segment for ACL
 563                  * in reply buffer.
 564                  */
 565                 if (md->body->aclsize) {
 566                         rc = mdc_unpack_acl(req, md);
 567                         if (rc)
 568                                 GOTO(out, rc);
 569 #ifdef CONFIG_FS_POSIX_ACL
 570                 } else {
 571                         md->posix_acl = NULL;
 572 #endif
 573                 }
 574         }
 575         if (md->body->valid & OBD_MD_FLMDSCAPA) {
 576                 struct obd_capa *oc = NULL;
 577
 578                 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA1, &oc);
 579                 if (rc)
 580                         GOTO(out, rc);
 581                 md->mds_capa = oc;
 582         }
 583
 584         if (md->body->valid & OBD_MD_FLOSSCAPA) {
 585                 struct obd_capa *oc = NULL;
 586
 587                 rc = mdc_unpack_capa(NULL, req, &RMF_CAPA2, &oc);
 588                 if (rc)
 589                         GOTO(out, rc);
 590                 md->oss_capa = oc;
 591         }
 592
 593         EXIT;
 594 out:
 595         if (rc) {
 596                 if (md->oss_capa) {
 597                         capa_put(md->oss_capa);
 598                         md->oss_capa = NULL;
 599                 }
 600                 if (md->mds_capa) {
 601                         capa_put(md->mds_capa);
 602                         md->mds_capa = NULL;
 603                 }
 604 #ifdef CONFIG_FS_POSIX_ACL
 605                 posix_acl_release(md->posix_acl);
 606 #endif
 607                 if (md->lsm)
 608                         obd_free_memmd(dt_exp, &md->lsm);
 609         }
 610         return rc;
 611 }
 612
 613 int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
 614 {
 615         ENTRY;
 616         RETURN(0);
 617 }
 618
 619 /**
 620  * Handles both OPEN and SETATTR RPCs for OPEN-CLOSE and SETATTR-DONE_WRITING
 621  * RPC chains.
 622  */
 623 void mdc_replay_open(struct ptlrpc_request *req)
 624 {
 625         struct md_open_data *mod = req->rq_cb_data;
 626         struct ptlrpc_request *close_req;
 627         struct obd_client_handle *och;
 628         struct lustre_handle old;
 629         struct mdt_body *body;
 630         ENTRY;
 631
 632         if (mod == NULL) {
 633                 DEBUG_REQ(D_ERROR, req,
 634                           "Can't properly replay without open data.");
 635                 EXIT;
 636                 return;
 637         }
 638
 639         body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
 640         LASSERT(body != NULL);
 641
 642         och = mod->mod_och;
 643         if (och != NULL) {
 644                 struct lustre_handle *file_fh;
 645
 646                 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
 647
 648                 file_fh = &och->och_fh;
 649                 CDEBUG(D_HA, "updating handle from "LPX64" to "LPX64"\n",
 650                        file_fh->cookie, body->handle.cookie);
 651                 old = *file_fh;
 652                 *file_fh = body->handle;
 653         }
 654         close_req = mod->mod_close_req;
 655         if (close_req != NULL) {
 656                 __u32 opc = lustre_msg_get_opc(close_req->rq_reqmsg);
 657                 struct mdt_epoch *epoch;
 658
 659                 LASSERT(opc == MDS_CLOSE || opc == MDS_DONE_WRITING);
 660                 epoch = req_capsule_client_get(&close_req->rq_pill,
 661                                                &RMF_MDT_EPOCH);
 662                 LASSERT(epoch);
 663
 664                 if (och != NULL)
 665                         LASSERT(!memcmp(&old, &epoch->handle, sizeof(old)));
 666                 DEBUG_REQ(D_HA, close_req, "updating close body with new fh");
 667                 epoch->handle = body->handle;
 668         }
 669         EXIT;
 670 }
 671
 672 void mdc_commit_open(struct ptlrpc_request *req)
 673 {
 674         struct md_open_data *mod = req->rq_cb_data;
 675         if (mod == NULL)
 676                 return;
 677
 678         if (mod->mod_close_req != NULL)
 679                 mod->mod_close_req->rq_cb_data = NULL;
 680
 681         if (mod->mod_och != NULL)
 682                 mod->mod_och->och_mod = NULL;
 683
 684         OBD_FREE(mod, sizeof(*mod));
 685         req->rq_cb_data = NULL;
 686 }
 687
 688 int mdc_set_open_replay_data(struct obd_export *exp,
 689                              struct obd_client_handle *och,
 690                              struct ptlrpc_request *open_req)
 691 {
 692         struct md_open_data   *mod;
 693         struct mdt_rec_create *rec;
 694         struct mdt_body       *body;
 695         struct obd_import     *imp = open_req->rq_import;
 696         ENTRY;
 697
 698         if (!open_req->rq_replay)
 699                 RETURN(0);
 700
 701         rec = req_capsule_client_get(&open_req->rq_pill, &RMF_REC_REINT);
 702         body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
 703         LASSERT(rec != NULL);
 704         /* Incoming message in my byte order (it's been swabbed). */
 705         /* Outgoing messages always in my byte order. */
 706         LASSERT(body != NULL);
 707
 708         /* Only if the import is replayable, we set replay_open data */
 709         if (och && imp->imp_replayable) {
 710                 OBD_ALLOC_PTR(mod);
 711                 if (mod == NULL) {
 712                         DEBUG_REQ(D_ERROR, open_req,
 713                                   "Can't allocate md_open_data");
 714                         RETURN(0);
 715                 }
 716
 717                 spin_lock(&open_req->rq_lock);
 718                 och->och_mod = mod;
 719                 mod->mod_och = och;
 720                 mod->mod_open_req = open_req;
 721                 open_req->rq_cb_data = mod;
 722                 open_req->rq_commit_cb = mdc_commit_open;
 723                 spin_unlock(&open_req->rq_lock);
 724         }
 725
 726         rec->cr_fid2 = body->fid1;
 727         rec->cr_ioepoch = body->ioepoch;
 728         rec->cr_old_handle.cookie = body->handle.cookie;
 729         open_req->rq_replay_cb = mdc_replay_open;
 730         if (!fid_is_sane(&body->fid1)) {
 731                 DEBUG_REQ(D_ERROR, open_req, "Saving replay request with "
 732                           "insane fid");
 733                 LBUG();
 734         }
 735
 736         DEBUG_REQ(D_RPCTRACE, open_req, "Set up open replay data");
 737         RETURN(0);
 738 }
 739
 740 int mdc_clear_open_replay_data(struct obd_export *exp,
 741                                struct obd_client_handle *och)
 742 {
 743         struct md_open_data *mod = och->och_mod;
 744         ENTRY;
 745
 746         /*
 747          * Don't free the structure now (it happens in mdc_commit_open(), after
 748          * we're sure we won't need to fix up the close request in the future),
 749          * but make sure that replay doesn't poke at the och, which is about to
 750          * be freed.
 751          */
 752         LASSERT(mod != LP_POISON);
 753         if (mod != NULL)
 754                 mod->mod_och = NULL;
 755
 756         och->och_mod = NULL;
 757         RETURN(0);
 758 }
 759
 760 int mdc_close(struct obd_export *exp, struct md_op_data *op_data,
 761               struct md_open_data *mod, struct ptlrpc_request **request)
 762 {
 763         struct obd_device     *obd = class_exp2obd(exp);
 764         struct ptlrpc_request *req;
 765         int                    rc;
 766         ENTRY;
 767
 768         *request = NULL;
 769         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_CLOSE);
 770         if (req == NULL)
 771                 RETURN(-ENOMEM);
 772
 773         mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
 774
 775         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE);
 776         if (rc) {
 777                 ptlrpc_request_free(req);
 778                 RETURN(rc);
 779         }
 780
 781         /* To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a
 782          * portal whose threads are not taking any DLM locks and are therefore
 783          * always progressing */
 784         req->rq_request_portal = MDS_READPAGE_PORTAL;
 785         ptlrpc_at_set_req_timeout(req);
 786
 787         /* Ensure that this close's handle is fixed up during replay. */
 788         if (likely(mod != NULL)) {
 789                 LASSERTF(mod->mod_open_req->rq_type != LI_POISON,
 790                          "POISONED open %p!\n", mod->mod_open_req);
 791
 792                 mod->mod_close_req = req;
 793                 DEBUG_REQ(D_HA, mod->mod_open_req, "matched open");
 794                 /* We no longer want to preserve this open for replay even
 795                  * though the open was committed. b=3632, b=3633 */
 796                 spin_lock(&mod->mod_open_req->rq_lock);
 797                 mod->mod_open_req->rq_replay = 0;
 798                 spin_unlock(&mod->mod_open_req->rq_lock);
 799         } else {
 800                  CDEBUG(D_HA, "couldn't find open req; expecting close error\n");
 801         }
 802
 803         mdc_close_pack(req, op_data);
 804
 805         req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
 806                              obd->u.cli.cl_max_mds_easize);
 807         req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_SERVER,
 808                              obd->u.cli.cl_max_mds_cookiesize);
 809
 810         ptlrpc_request_set_replen(req);
 811
 812         mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
 813         rc = ptlrpc_queue_wait(req);
 814         mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
 815
 816         if (req->rq_repmsg == NULL) {
 817                 CDEBUG(D_RPCTRACE, "request failed to send: %p, %d\n", req,
 818                        req->rq_status);
 819                 if (rc == 0)
 820                         rc = req->rq_status ?: -EIO;
 821         } else if (rc == 0 || rc == -EAGAIN) {
 822                 struct mdt_body *body;
 823
 824                 rc = lustre_msg_get_status(req->rq_repmsg);
 825                 if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) {
 826                         DEBUG_REQ(D_ERROR, req, "type == PTL_RPC_MSG_ERR, err "
 827                                   "= %d", rc);
 828                         if (rc > 0)
 829                                 rc = -rc;
 830                 } else if (mod == NULL) {
 831                         if (req->rq_import->imp_replayable)
 832                                 CERROR("Unexpected: can't find md_open_data,"
 833                                        "but close succeeded with replayable imp"
 834                                        "Please tell "
 835                                        "http://bugzilla.lustre.org/\n");
 836                 }
 837
 838                 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
 839                 if (body == NULL)
 840                         rc = -EPROTO;
 841         }
 842
 843         *request = req;
 844         RETURN(rc);
 845 }
 846
 847 int mdc_done_writing(struct obd_export *exp, struct md_op_data *op_data,
 848                      struct md_open_data *mod)
 849 {
 850         struct obd_device     *obd = class_exp2obd(exp);
 851         struct ptlrpc_request *req;
 852         int                    rc;
 853         ENTRY;
 854
 855         req = ptlrpc_request_alloc(class_exp2cliimp(exp),
 856                                    &RQF_MDS_DONE_WRITING);
 857         if (req == NULL)
 858                 RETURN(-ENOMEM);
 859
 860         mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
 861         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_DONE_WRITING);
 862         if (rc) {
 863                 ptlrpc_request_free(req);
 864                 RETURN(rc);
 865         }
 866
 867         if (mod != NULL) {
 868                 LASSERTF(mod->mod_open_req->rq_type != LI_POISON,
 869                          "POISONED setattr %p!\n", mod->mod_open_req);
 870
 871                 mod->mod_close_req = req;
 872                 DEBUG_REQ(D_HA, mod->mod_open_req, "matched setattr");
 873                 /* We no longer want to preserve this open for replay even
 874                  * though the open was committed. b=3632, b=3633 */
 875                 spin_lock(&mod->mod_open_req->rq_lock);
 876                 mod->mod_open_req->rq_replay = 0;
 877                 spin_unlock(&mod->mod_open_req->rq_lock);
 878         }
 879
 880         mdc_close_pack(req, op_data);
 881         ptlrpc_request_set_replen(req);
 882
 883         mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
 884         rc = ptlrpc_queue_wait(req);
 885         mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
 886
 887         ptlrpc_req_finished(req);
 888         RETURN(rc);
 889 }
 890
 891 #ifdef HAVE_SPLIT_SUPPORT
 892 int mdc_sendpage(struct obd_export *exp, const struct lu_fid *fid,
 893                  const struct page *page, int offset)
 894 {
 895         struct ptlrpc_request   *req;
 896         struct ptlrpc_bulk_desc *desc;
 897         int                      rc;
 898         ENTRY;
 899
 900         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_WRITEPAGE);
 901         if (req == NULL)
 902                 RETURN(-ENOMEM);
 903
 904         /* FIXME: capa doesn't support split yet */
 905         mdc_set_capa_size(req, &RMF_CAPA1, NULL);
 906
 907         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_WRITEPAGE);
 908         if (rc) {
 909                 ptlrpc_request_free(req);
 910                 RETURN(rc);
 911         }
 912
 913         req->rq_request_portal = MDS_READPAGE_PORTAL;
 914         ptlrpc_at_set_req_timeout(req);
 915
 916         desc = ptlrpc_prep_bulk_imp(req, 1, BULK_GET_SOURCE, MDS_BULK_PORTAL);
 917         if (desc == NULL)
 918                 GOTO(out, rc = -ENOMEM);
 919
 920         /* NB req now owns desc and will free it when it gets freed. */
 921         ptlrpc_prep_bulk_page(desc, (struct page *)page, 0, offset);
 922         mdc_readdir_pack(req, 0, offset, fid, NULL);
 923
 924         ptlrpc_request_set_replen(req);
 925         rc = ptlrpc_queue_wait(req);
 926         if (rc)
 927                 GOTO(out, rc);
 928
 929         rc = sptlrpc_cli_unwrap_bulk_write(req, req->rq_bulk);
 930 out:
 931         ptlrpc_req_finished(req);
 932         return rc;
 933 }
 934 EXPORT_SYMBOL(mdc_sendpage);
 935 #endif
 936
 937 int mdc_readpage(struct obd_export *exp, const struct lu_fid *fid,
 938                  struct obd_capa *oc, __u64 offset, struct page *page,
 939                  struct ptlrpc_request **request)
 940 {
 941         struct ptlrpc_request   *req;
 942         struct ptlrpc_bulk_desc *desc;
 943         int                      rc;
 944         ENTRY;
 945
 946         *request = NULL;
 947         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_READPAGE);
 948         if (req == NULL)
 949                 RETURN(-ENOMEM);
 950
 951         mdc_set_capa_size(req, &RMF_CAPA1, oc);
 952
 953         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_READPAGE);
 954         if (rc) {
 955                 ptlrpc_request_free(req);
 956                 RETURN(rc);
 957         }
 958
 959         req->rq_request_portal = MDS_READPAGE_PORTAL;
 960         ptlrpc_at_set_req_timeout(req);
 961
 962         desc = ptlrpc_prep_bulk_imp(req, 1, BULK_PUT_SINK, MDS_BULK_PORTAL);
 963         if (desc == NULL) {
 964                 ptlrpc_request_free(req);
 965                 RETURN(-ENOMEM);
 966         }
 967
 968         /* NB req now owns desc and will free it when it gets freed */
 969         ptlrpc_prep_bulk_page(desc, page, 0, CFS_PAGE_SIZE);
 970         mdc_readdir_pack(req, offset, CFS_PAGE_SIZE, fid, oc);
 971
 972         ptlrpc_request_set_replen(req);
 973         rc = ptlrpc_queue_wait(req);
 974         if (rc) {
 975                 ptlrpc_req_finished(req);
 976                 RETURN(rc);
 977         }
 978
 979         rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
 980                                           req->rq_bulk->bd_nob_transferred);
 981         if (rc < 0) {
 982                 ptlrpc_req_finished(req);
 983                 RETURN(rc);
 984         }
 985
 986         if (req->rq_bulk->bd_nob_transferred != CFS_PAGE_SIZE) {
 987                 CERROR("Unexpected # bytes transferred: %d (%ld expected)\n",
 988                         req->rq_bulk->bd_nob_transferred, CFS_PAGE_SIZE);
 989                 ptlrpc_req_finished(req);
 990                 RETURN(-EPROTO);
 991         }
 992
 993         *request = req;
 994         RETURN(0);
 995 }
 996
 997 static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
 998                          void *karg, void *uarg)
 999 {
1000         struct obd_device *obd = exp->exp_obd;
1001         struct obd_ioctl_data *data = karg;
1002         struct obd_import *imp = obd->u.cli.cl_import;
1003         struct llog_ctxt *ctxt;
1004         int rc;
1005         ENTRY;
1006
1007         if (!try_module_get(THIS_MODULE)) {
1008                 CERROR("Can't get module. Is it alive?");
1009                 return -EINVAL;
1010         }
1011         switch (cmd) {
1012         case OBD_IOC_CHANGELOG_CLEAR: {
1013                 struct changelog_setinfo cs =
1014                         {data->ioc_u64_1, data->ioc_u32_1};
1015                 rc = obd_set_info_async(exp, strlen(KEY_CHANGELOG_CLEAR),
1016                                         KEY_CHANGELOG_CLEAR, sizeof(cs), &cs,
1017                                         NULL);
1018                 GOTO(out, rc);
1019         }
1020         case OBD_IOC_CLIENT_RECOVER:
1021                 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1);
1022                 if (rc < 0)
1023                         GOTO(out, rc);
1024                 GOTO(out, rc = 0);
1025         case IOC_OSC_SET_ACTIVE:
1026                 rc = ptlrpc_set_import_active(imp, data->ioc_offset);
1027                 GOTO(out, rc);
1028         case OBD_IOC_PARSE: {
1029                 ctxt = llog_get_context(exp->exp_obd, LLOG_CONFIG_REPL_CTXT);
1030                 rc = class_config_parse_llog(ctxt, data->ioc_inlbuf1, NULL);
1031                 llog_ctxt_put(ctxt);
1032                 GOTO(out, rc);
1033         }
1034 #ifdef __KERNEL__
1035         case OBD_IOC_LLOG_INFO:
1036         case OBD_IOC_LLOG_PRINT: {
1037                 ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
1038                 rc = llog_ioctl(ctxt, cmd, data);
1039                 llog_ctxt_put(ctxt);
1040                 GOTO(out, rc);
1041         }
1042 #endif
1043         case OBD_IOC_POLL_QUOTACHECK:
1044                 rc = lquota_poll_check(quota_interface, exp,
1045                                        (struct if_quotacheck *)karg);
1046                 GOTO(out, rc);
1047         case OBD_IOC_PING_TARGET:
1048                 rc = ptlrpc_obd_ping(obd);
1049                 GOTO(out, rc);
1050         default:
1051                 CERROR("mdc_ioctl(): unrecognised ioctl %#x\n", cmd);
1052                 GOTO(out, rc = -ENOTTY);
1053         }
1054 out:
1055         module_put(THIS_MODULE);
1056
1057         return rc;
1058 }
1059
1060 static int do_set_info_async(struct obd_export *exp,
1061                              obd_count keylen, void *key,
1062                              obd_count vallen, void *val,
1063                              struct ptlrpc_request_set *set)
1064 {
1065         struct obd_import     *imp = class_exp2cliimp(exp);
1066         struct ptlrpc_request *req;
1067         char                  *tmp;
1068         int                    rc;
1069         ENTRY;
1070
1071         req = ptlrpc_request_alloc(imp, &RQF_MDS_SET_INFO);
1072         if (req == NULL)
1073                 RETURN(-ENOMEM);
1074
1075         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1076                              RCL_CLIENT, keylen);
1077         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1078                              RCL_CLIENT, vallen);
1079         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SET_INFO);
1080         if (rc) {
1081                 ptlrpc_request_free(req);
1082                 RETURN(rc);
1083         }
1084
1085         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1086         memcpy(tmp, key, keylen);
1087         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1088         memcpy(tmp, val, vallen);
1089
1090         ptlrpc_request_set_replen(req);
1091
1092         if (set) {
1093                 ptlrpc_set_add_req(set, req);
1094                 ptlrpc_check_set(NULL, set);
1095         } else {
1096                 rc = ptlrpc_queue_wait(req);
1097                 ptlrpc_req_finished(req);
1098         }
1099
1100         RETURN(rc);
1101 }
1102
1103 int mdc_set_info_async(struct obd_export *exp,
1104                        obd_count keylen, void *key,
1105                        obd_count vallen, void *val,
1106                        struct ptlrpc_request_set *set)
1107 {
1108         struct obd_import *imp = class_exp2cliimp(exp);
1109         int                rc = -EINVAL;
1110         ENTRY;
1111
1112         if (KEY_IS(KEY_INIT_RECOV)) {
1113                 if (vallen != sizeof(int))
1114                         RETURN(-EINVAL);
1115                 spin_lock(&imp->imp_lock);
1116                 imp->imp_initial_recov = *(int *)val;
1117                 spin_unlock(&imp->imp_lock);
1118                 CDEBUG(D_HA, "%s: set imp_initial_recov = %d\n",
1119                        exp->exp_obd->obd_name, imp->imp_initial_recov);
1120                 RETURN(0);
1121         }
1122         /* Turn off initial_recov after we try all backup servers once */
1123         if (KEY_IS(KEY_INIT_RECOV_BACKUP)) {
1124                 if (vallen != sizeof(int))
1125                         RETURN(-EINVAL);
1126                 spin_lock(&imp->imp_lock);
1127                 imp->imp_initial_recov_bk = *(int *)val;
1128                 if (imp->imp_initial_recov_bk)
1129                         imp->imp_initial_recov = 1;
1130                 spin_unlock(&imp->imp_lock);
1131                 CDEBUG(D_HA, "%s: set imp_initial_recov_bk = %d\n",
1132                        exp->exp_obd->obd_name, imp->imp_initial_recov_bk);
1133                 RETURN(0);
1134         }
1135         if (KEY_IS(KEY_READ_ONLY)) {
1136                 if (vallen != sizeof(int))
1137                         RETURN(-EINVAL);
1138
1139                 spin_lock(&imp->imp_lock);
1140                 if (*((int *)val)) {
1141                         imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY;
1142                         imp->imp_connect_data.ocd_connect_flags |= OBD_CONNECT_RDONLY;
1143                 } else {
1144                         imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY;
1145                         imp->imp_connect_data.ocd_connect_flags &= ~OBD_CONNECT_RDONLY;
1146                 }
1147                 spin_unlock(&imp->imp_lock);
1148
1149                 rc = do_set_info_async(exp, keylen, key, vallen, val, set);
1150                 RETURN(rc);
1151         }
1152         if (KEY_IS(KEY_SPTLRPC_CONF)) {
1153                 sptlrpc_conf_client_adapt(exp->exp_obd);
1154                 RETURN(0);
1155         }
1156         if (KEY_IS(KEY_FLUSH_CTX)) {
1157                 sptlrpc_import_flush_my_ctx(imp);
1158                 RETURN(0);
1159         }
1160         if (KEY_IS(KEY_MDS_CONN)) {
1161                 struct obd_import *imp = class_exp2cliimp(exp);
1162
1163                 /* mds-mds import */
1164                 spin_lock(&imp->imp_lock);
1165                 imp->imp_server_timeout = 1;
1166                 spin_unlock(&imp->imp_lock);
1167                 imp->imp_client->cli_request_portal = MDS_MDS_PORTAL;
1168                 CDEBUG(D_OTHER, "%s: timeout / 2\n", exp->exp_obd->obd_name);
1169                 RETURN(0);
1170         }
1171         if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1172                 rc = do_set_info_async(exp, keylen, key, vallen, val, set);
1173                 RETURN(rc);
1174         }
1175
1176         RETURN(rc);
1177 }
1178
1179 int mdc_get_info(struct obd_export *exp, __u32 keylen, void *key,
1180                  __u32 *vallen, void *val, struct lov_stripe_md *lsm)
1181 {
1182         int rc = -EINVAL;
1183
1184         if (KEY_IS(KEY_MAX_EASIZE)) {
1185                 int mdsize, *max_easize;
1186
1187                 if (*vallen != sizeof(int))
1188                         RETURN(-EINVAL);
1189                 mdsize = *(int*)val;
1190                 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize)
1191                         exp->exp_obd->u.cli.cl_max_mds_easize = mdsize;
1192                 max_easize = val;
1193                 *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize;
1194                 RETURN(0);
1195         }
1196         if (KEY_IS(KEY_CONN_DATA)) {
1197                 struct obd_import *imp = class_exp2cliimp(exp);
1198                 struct obd_connect_data *data = val;
1199
1200                 if (*vallen != sizeof(*data))
1201                         RETURN(-EINVAL);
1202
1203                 *data = imp->imp_connect_data;
1204                 RETURN(0);
1205         }
1206
1207         RETURN(rc);
1208 }
1209
1210 static int mdc_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1211                       __u64 max_age, __u32 flags)
1212 {
1213         struct ptlrpc_request *req;
1214         struct obd_statfs     *msfs;
1215         struct obd_import     *imp = NULL;
1216         int                    rc;
1217         ENTRY;
1218
1219
1220         /*Since the request might also come from lprocfs, so we need
1221          *sync this with client_disconnect_export Bug15684*/
1222         down_read(&obd->u.cli.cl_sem);
1223         if (obd->u.cli.cl_import)
1224                 imp = class_import_get(obd->u.cli.cl_import);
1225         up_read(&obd->u.cli.cl_sem);
1226         if (!imp)
1227                 RETURN(-ENODEV);
1228
1229         req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_STATFS,
1230                                         LUSTRE_MDS_VERSION, MDS_STATFS);
1231         if (req == NULL)
1232                 GOTO(output, rc = -ENOMEM);
1233
1234         ptlrpc_request_set_replen(req);
1235
1236         if (flags & OBD_STATFS_NODELAY) {
1237                 /* procfs requests not want stay in wait for avoid deadlock */
1238                 req->rq_no_resend = 1;
1239                 req->rq_no_delay = 1;
1240         }
1241
1242         rc = ptlrpc_queue_wait(req);
1243         if (rc) {
1244                 /* check connection error first */
1245                 if (imp->imp_connect_error)
1246                         rc = imp->imp_connect_error;
1247                 GOTO(out, rc);
1248         }
1249
1250         msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1251         if (msfs == NULL)
1252                 GOTO(out, rc = -EPROTO);
1253
1254         *osfs = *msfs;
1255         EXIT;
1256 out:
1257         ptlrpc_req_finished(req);
1258 output:
1259         class_import_put(imp);
1260         return rc;
1261 }
1262
1263 static int mdc_pin(struct obd_export *exp, const struct lu_fid *fid,
1264                    struct obd_capa *oc, struct obd_client_handle *handle,
1265                    int flags)
1266 {
1267         struct ptlrpc_request *req;
1268         struct mdt_body       *body;
1269         int                    rc;
1270         ENTRY;
1271
1272         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_PIN);
1273         if (req == NULL)
1274                 RETURN(-ENOMEM);
1275
1276         mdc_set_capa_size(req, &RMF_CAPA1, oc);
1277
1278         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_PIN);
1279         if (rc) {
1280                 ptlrpc_request_free(req);
1281                 RETURN(rc);
1282         }
1283
1284         mdc_pack_body(req, fid, oc, 0, 0, -1, flags);
1285
1286         ptlrpc_request_set_replen(req);
1287
1288         mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
1289         rc = ptlrpc_queue_wait(req);
1290         mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
1291         if (rc) {
1292                 CERROR("Pin failed: %d\n", rc);
1293                 GOTO(err_out, rc);
1294         }
1295
1296         body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1297         if (body == NULL)
1298                 GOTO(err_out, rc = -EPROTO);
1299
1300         handle->och_fh = body->handle;
1301         handle->och_magic = OBD_CLIENT_HANDLE_MAGIC;
1302
1303         OBD_ALLOC_PTR(handle->och_mod);
1304         if (handle->och_mod == NULL) {
1305                 DEBUG_REQ(D_ERROR, req, "can't allocate md_open_data");
1306                 GOTO(err_out, rc = -ENOMEM);
1307         }
1308         handle->och_mod->mod_open_req = req; /* will be dropped by unpin */
1309
1310         RETURN(0);
1311
1312 err_out:
1313         ptlrpc_req_finished(req);
1314         RETURN(rc);
1315 }
1316
1317 static int mdc_unpin(struct obd_export *exp, struct obd_client_handle *handle,
1318                      int flag)
1319 {
1320         struct ptlrpc_request *req;
1321         struct mdt_body       *body;
1322         int                    rc;
1323         ENTRY;
1324
1325         req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_UNPIN,
1326                                         LUSTRE_MDS_VERSION, MDS_UNPIN);
1327         if (req == NULL)
1328                 RETURN(-ENOMEM);
1329
1330         body = req_capsule_client_get(&req->rq_pill, &RMF_MDT_BODY);
1331         body->handle = handle->och_fh;
1332         body->flags = flag;
1333
1334         ptlrpc_request_set_replen(req);
1335
1336         mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
1337         rc = ptlrpc_queue_wait(req);
1338         mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
1339
1340         if (rc != 0)
1341                 CERROR("Unpin failed: %d\n", rc);
1342
1343         ptlrpc_req_finished(req);
1344         ptlrpc_req_finished(handle->och_mod->mod_open_req);
1345
1346         OBD_FREE(handle->och_mod, sizeof(*handle->och_mod));
1347         RETURN(rc);
1348 }
1349
1350 int mdc_sync(struct obd_export *exp, const struct lu_fid *fid,
1351              struct obd_capa *oc, struct ptlrpc_request **request)
1352 {
1353         struct ptlrpc_request *req;
1354         int                    rc;
1355         ENTRY;
1356
1357         *request = NULL;
1358         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_SYNC);
1359         if (req == NULL)
1360                 RETURN(-ENOMEM);
1361
1362         mdc_set_capa_size(req, &RMF_CAPA1, oc);
1363
1364         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SYNC);
1365         if (rc) {
1366                 ptlrpc_request_free(req);
1367                 RETURN(rc);
1368         }
1369
1370         mdc_pack_body(req, fid, oc, 0, 0, -1, 0);
1371
1372         ptlrpc_request_set_replen(req);
1373
1374         rc = ptlrpc_queue_wait(req);
1375         if (rc)
1376                 ptlrpc_req_finished(req);
1377         else
1378                 *request = req;
1379         RETURN(rc);
1380 }
1381
1382 static int mdc_import_event(struct obd_device *obd, struct obd_import *imp,
1383                             enum obd_import_event event)
1384 {
1385         int rc = 0;
1386
1387         LASSERT(imp->imp_obd == obd);
1388
1389         switch (event) {
1390         case IMP_EVENT_DISCON: {
1391 #if 0
1392                 /* XXX Pass event up to OBDs stack. used only for FLD now */
1393                 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DISCON, NULL);
1394 #endif
1395                 break;
1396         }
1397         case IMP_EVENT_INACTIVE: {
1398                 struct client_obd *cli = &obd->u.cli;
1399                 /*
1400                  * Flush current sequence to make client obtain new one
1401                  * from server in case of disconnect/reconnect.
1402                  * If range is already empty then no need to flush it.
1403                  */
1404                 if (cli->cl_seq != NULL &&
1405                     !range_is_exhausted(&cli->cl_seq->lcs_space)) {
1406                         seq_client_flush(cli->cl_seq);
1407                 }
1408
1409                 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
1410                 break;
1411         }
1412         case IMP_EVENT_INVALIDATE: {
1413                 struct ldlm_namespace *ns = obd->obd_namespace;
1414
1415                 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
1416
1417                 break;
1418         }
1419         case IMP_EVENT_ACTIVE: {
1420                 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
1421                 break;
1422         }
1423         case IMP_EVENT_OCD:
1424                 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
1425                 break;
1426
1427         default:
1428                 CERROR("Unknown import event %x\n", event);
1429                 LBUG();
1430         }
1431         RETURN(rc);
1432 }
1433
1434 static int mdc_fid_init(struct obd_export *exp)
1435 {
1436         struct client_obd *cli = &exp->exp_obd->u.cli;
1437         char *prefix;
1438         int rc;
1439         ENTRY;
1440
1441         OBD_ALLOC_PTR(cli->cl_seq);
1442         if (cli->cl_seq == NULL)
1443                 RETURN(-ENOMEM);
1444
1445         OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
1446         if (prefix == NULL)
1447                 GOTO(out_free_seq, rc = -ENOMEM);
1448
1449         snprintf(prefix, MAX_OBD_NAME + 5, "srv-%s",
1450                  exp->exp_obd->obd_name);
1451
1452         /* Init client side sequence-manager */
1453         rc = seq_client_init(cli->cl_seq, exp,
1454                              LUSTRE_SEQ_METADATA,
1455                              prefix, NULL);
1456         OBD_FREE(prefix, MAX_OBD_NAME + 5);
1457         if (rc)
1458                 GOTO(out_free_seq, rc);
1459
1460         RETURN(rc);
1461 out_free_seq:
1462         OBD_FREE_PTR(cli->cl_seq);
1463         cli->cl_seq = NULL;
1464         return rc;
1465 }
1466
1467 static int mdc_fid_fini(struct obd_export *exp)
1468 {
1469         struct client_obd *cli = &exp->exp_obd->u.cli;
1470         ENTRY;
1471
1472         if (cli->cl_seq != NULL) {
1473                 seq_client_fini(cli->cl_seq);
1474                 OBD_FREE_PTR(cli->cl_seq);
1475                 cli->cl_seq = NULL;
1476         }
1477
1478         RETURN(0);
1479 }
1480
1481 int mdc_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
1482                   struct md_op_data *op_data)
1483 {
1484         struct client_obd *cli = &exp->exp_obd->u.cli;
1485         struct lu_client_seq *seq = cli->cl_seq;
1486         ENTRY;
1487         RETURN(seq_client_alloc_fid(seq, fid));
1488 }
1489
1490 /* XXX This method is used only to clear current fid seq
1491  * once fld/mds insert failed */
1492 static int mdc_fid_delete(struct obd_export *exp, const struct lu_fid *fid)
1493 {
1494         struct client_obd *cli = &exp->exp_obd->u.cli;
1495
1496         seq_client_flush(cli->cl_seq);
1497         return 0;
1498 }
1499
1500 struct obd_uuid *mdc_get_uuid(struct obd_export *exp) {
1501         struct client_obd *cli = &exp->exp_obd->u.cli;
1502         return &cli->cl_target_uuid;
1503 }
1504
1505 static int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg)
1506 {
1507         struct client_obd *cli = &obd->u.cli;
1508         struct lprocfs_static_vars lvars = { 0 };
1509         int rc;
1510         ENTRY;
1511
1512         OBD_ALLOC(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
1513         if (!cli->cl_rpc_lock)
1514                 RETURN(-ENOMEM);
1515         mdc_init_rpc_lock(cli->cl_rpc_lock);
1516
1517         ptlrpcd_addref();
1518
1519         OBD_ALLOC(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock));
1520         if (!cli->cl_setattr_lock)
1521                 GOTO(err_rpc_lock, rc = -ENOMEM);
1522         mdc_init_rpc_lock(cli->cl_setattr_lock);
1523
1524         OBD_ALLOC(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
1525         if (!cli->cl_close_lock)
1526                 GOTO(err_setattr_lock, rc = -ENOMEM);
1527         mdc_init_rpc_lock(cli->cl_close_lock);
1528
1529         rc = client_obd_setup(obd, cfg);
1530         if (rc)
1531                 GOTO(err_close_lock, rc);
1532         lprocfs_mdc_init_vars(&lvars);
1533         lprocfs_obd_setup(obd, lvars.obd_vars);
1534         sptlrpc_lprocfs_cliobd_attach(obd);
1535         ptlrpc_lprocfs_register_obd(obd);
1536
1537         rc = obd_llog_init(obd, &obd->obd_olg, obd, 0, NULL, NULL);
1538         if (rc) {
1539                 mdc_cleanup(obd);
1540                 CERROR("failed to setup llogging subsystems\n");
1541         }
1542
1543         RETURN(rc);
1544
1545 err_close_lock:
1546         OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
1547 err_setattr_lock:
1548         OBD_FREE(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock));
1549 err_rpc_lock:
1550         OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
1551         ptlrpcd_decref();
1552         RETURN(rc);
1553 }
1554
1555 /* Initialize the default and maximum LOV EA and cookie sizes.  This allows
1556  * us to make MDS RPCs with large enough reply buffers to hold the
1557  * maximum-sized (= maximum striped) EA and cookie without having to
1558  * calculate this (via a call into the LOV + OSCs) each time we make an RPC. */
1559 static int mdc_init_ea_size(struct obd_export *exp, int easize,
1560                      int def_easize, int cookiesize)
1561 {
1562         struct obd_device *obd = exp->exp_obd;
1563         struct client_obd *cli = &obd->u.cli;
1564         ENTRY;
1565
1566         if (cli->cl_max_mds_easize < easize)
1567                 cli->cl_max_mds_easize = easize;
1568
1569         if (cli->cl_default_mds_easize < def_easize)
1570                 cli->cl_default_mds_easize = def_easize;
1571
1572         if (cli->cl_max_mds_cookiesize < cookiesize)
1573                 cli->cl_max_mds_cookiesize = cookiesize;
1574
1575         RETURN(0);
1576 }
1577
1578 static int mdc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
1579 {
1580         int rc = 0;
1581         ENTRY;
1582
1583         switch (stage) {
1584         case OBD_CLEANUP_EARLY:
1585         case OBD_CLEANUP_EXPORTS:
1586                 /* If we set up but never connected, the
1587                    client import will not have been cleaned. */
1588                 if (obd->u.cli.cl_import) {
1589                         struct obd_import *imp;
1590                         down_write(&obd->u.cli.cl_sem);
1591                         imp = obd->u.cli.cl_import;
1592                         CERROR("client import never connected\n");
1593                         ptlrpc_invalidate_import(imp);
1594                         class_destroy_import(imp);
1595                         up_write(&obd->u.cli.cl_sem);
1596                         obd->u.cli.cl_import = NULL;
1597                 }
1598                 rc = obd_llog_finish(obd, 0);
1599                 if (rc != 0)
1600                         CERROR("failed to cleanup llogging subsystems\n");
1601                 break;
1602         }
1603         RETURN(rc);
1604 }
1605
1606 static int mdc_cleanup(struct obd_device *obd)
1607 {
1608         struct client_obd *cli = &obd->u.cli;
1609
1610         OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
1611         OBD_FREE(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock));
1612         OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
1613
1614         ptlrpc_lprocfs_unregister_obd(obd);
1615         lprocfs_obd_cleanup(obd);
1616         ptlrpcd_decref();
1617
1618         return client_obd_cleanup(obd);
1619 }
1620
1621
1622 static int mdc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
1623                          struct obd_device *tgt, int count,
1624                          struct llog_catid *logid, struct obd_uuid *uuid)
1625 {
1626         struct llog_ctxt *ctxt;
1627         int rc;
1628         ENTRY;
1629
1630         LASSERT(olg == &obd->obd_olg);
1631
1632         rc = llog_setup(obd, olg, LLOG_LOVEA_REPL_CTXT, tgt, 0, NULL,
1633                         &llog_client_ops);
1634         if (rc)
1635                 RETURN(rc);
1636         ctxt = llog_get_context(obd, LLOG_LOVEA_REPL_CTXT);
1637         llog_initiator_connect(ctxt);
1638         llog_ctxt_put(ctxt);
1639
1640         rc = llog_setup(obd, olg, LLOG_CHANGELOG_REPL_CTXT, tgt, 0, NULL,
1641                         &llog_client_ops);
1642         if (rc == 0) {
1643                 ctxt = llog_group_get_ctxt(olg, LLOG_CHANGELOG_REPL_CTXT);
1644                 llog_initiator_connect(ctxt);
1645                 llog_ctxt_put(ctxt);
1646         }
1647
1648         RETURN(rc);
1649 }
1650
1651 static int mdc_llog_finish(struct obd_device *obd, int count)
1652 {
1653         struct llog_ctxt *ctxt;
1654         int rc = 0;
1655         ENTRY;
1656
1657         ctxt = llog_get_context(obd, LLOG_LOVEA_REPL_CTXT);
1658         if (ctxt)
1659                 rc = llog_cleanup(ctxt);
1660
1661         ctxt = llog_get_context(obd, LLOG_CHANGELOG_REPL_CTXT);
1662         if (ctxt)
1663                 rc = llog_cleanup(ctxt);
1664
1665         RETURN(rc);
1666 }
1667
1668 static int mdc_process_config(struct obd_device *obd, obd_count len, void *buf)
1669 {
1670         struct lustre_cfg *lcfg = buf;
1671         struct lprocfs_static_vars lvars = { 0 };
1672         int rc = 0;
1673
1674         lprocfs_mdc_init_vars(&lvars);
1675         switch (lcfg->lcfg_command) {
1676         default:
1677                 rc = class_process_proc_param(PARAM_MDC, lvars.obd_vars,
1678                                               lcfg, obd);
1679                 if (rc > 0)
1680                         rc = 0;
1681                 break;
1682         }
1683         return(rc);
1684 }
1685
1686
1687 /* get remote permission for current user on fid */
1688 int mdc_get_remote_perm(struct obd_export *exp, const struct lu_fid *fid,
1689                         struct obd_capa *oc, __u32 suppgid,
1690                         struct ptlrpc_request **request)
1691 {
1692         struct ptlrpc_request  *req;
1693         int                    rc;
1694         ENTRY;
1695
1696         LASSERT(client_is_remote(exp));
1697
1698         *request = NULL;
1699         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
1700         if (req == NULL)
1701                 RETURN(-ENOMEM);
1702
1703         mdc_set_capa_size(req, &RMF_CAPA1, oc);
1704
1705         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
1706         if (rc) {
1707                 ptlrpc_request_free(req);
1708                 RETURN(rc);
1709         }
1710
1711         mdc_pack_body(req, fid, oc, OBD_MD_FLRMTPERM, 0, suppgid, 0);
1712
1713         req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
1714                              sizeof(struct mdt_remote_perm));
1715
1716         ptlrpc_request_set_replen(req);
1717
1718         rc = ptlrpc_queue_wait(req);
1719         if (rc)
1720                 ptlrpc_req_finished(req);
1721         else
1722                 *request = req;
1723         RETURN(rc);
1724 }
1725
1726 static int mdc_interpret_renew_capa(const struct lu_env *env,
1727                                     struct ptlrpc_request *req, void *unused,
1728                                     int status)
1729 {
1730         struct obd_capa *oc = req->rq_async_args.pointer_arg[0];
1731         renew_capa_cb_t cb = req->rq_async_args.pointer_arg[1];
1732         struct mdt_body *body = NULL;
1733         struct lustre_capa *capa;
1734         ENTRY;
1735
1736         if (status)
1737                 GOTO(out, capa = ERR_PTR(status));
1738
1739         body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1740         if (body == NULL)
1741                 GOTO(out, capa = ERR_PTR(-EFAULT));
1742
1743         if ((body->valid & OBD_MD_FLOSSCAPA) == 0)
1744                 GOTO(out, capa = ERR_PTR(-ENOENT));
1745
1746         capa = req_capsule_server_get(&req->rq_pill, &RMF_CAPA2);
1747         if (!capa)
1748                 GOTO(out, capa = ERR_PTR(-EFAULT));
1749         EXIT;
1750 out:
1751         cb(oc, capa);
1752         return 0;
1753 }
1754
1755 static int mdc_renew_capa(struct obd_export *exp, struct obd_capa *oc,
1756                           renew_capa_cb_t cb)
1757 {
1758         struct ptlrpc_request *req;
1759         ENTRY;
1760
1761         req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_GETATTR,
1762                                         LUSTRE_MDS_VERSION, MDS_GETATTR);
1763         if (req == NULL)
1764                 RETURN(-ENOMEM);
1765
1766         /* NB, OBD_MD_FLOSSCAPA is set here, but it doesn't necessarily mean the
1767          * capa to renew is oss capa.
1768          */
1769         mdc_pack_body(req, &oc->c_capa.lc_fid, oc, OBD_MD_FLOSSCAPA, 0, -1, 0);
1770         ptlrpc_request_set_replen(req);
1771
1772         req->rq_async_args.pointer_arg[0] = oc;
1773         req->rq_async_args.pointer_arg[1] = cb;
1774         req->rq_interpret_reply = mdc_interpret_renew_capa;
1775         ptlrpcd_add_req(req, PSCOPE_OTHER);
1776         RETURN(0);
1777 }
1778
1779 static int mdc_connect(const struct lu_env *env,
1780                        struct obd_export **exp,
1781                        struct obd_device *obd, struct obd_uuid *cluuid,
1782                        struct obd_connect_data *data,
1783                        void *localdata)
1784 {
1785         struct obd_import *imp = obd->u.cli.cl_import;
1786
1787         /* mds-mds import features */
1788         if (data && (data->ocd_connect_flags & OBD_CONNECT_MDS_MDS)) {
1789                 spin_lock(&imp->imp_lock);
1790                 imp->imp_server_timeout = 1;
1791                 spin_unlock(&imp->imp_lock);
1792                 imp->imp_client->cli_request_portal = MDS_MDS_PORTAL;
1793                 CDEBUG(D_OTHER, "%s: Set 'mds' portal and timeout\n",
1794                        obd->obd_name);
1795         }
1796
1797         return client_connect_import(env, exp, obd, cluuid, data, NULL);
1798 }
1799
1800 struct obd_ops mdc_obd_ops = {
1801         .o_owner            = THIS_MODULE,
1802         .o_setup            = mdc_setup,
1803         .o_precleanup       = mdc_precleanup,
1804         .o_cleanup          = mdc_cleanup,
1805         .o_add_conn         = client_import_add_conn,
1806         .o_del_conn         = client_import_del_conn,
1807         .o_connect          = mdc_connect,
1808         .o_disconnect       = client_disconnect_export,
1809         .o_iocontrol        = mdc_iocontrol,
1810         .o_set_info_async   = mdc_set_info_async,
1811         .o_statfs           = mdc_statfs,
1812         .o_pin              = mdc_pin,
1813         .o_unpin            = mdc_unpin,
1814         .o_fid_init         = mdc_fid_init,
1815         .o_fid_fini         = mdc_fid_fini,
1816         .o_fid_alloc        = mdc_fid_alloc,
1817         .o_fid_delete       = mdc_fid_delete,
1818         .o_import_event     = mdc_import_event,
1819         .o_llog_init        = mdc_llog_init,
1820         .o_llog_finish      = mdc_llog_finish,
1821         .o_get_info         = mdc_get_info,
1822         .o_process_config   = mdc_process_config,
1823         .o_get_uuid         = mdc_get_uuid,
1824 };
1825
1826 struct md_ops mdc_md_ops = {
1827         .m_getstatus        = mdc_getstatus,
1828         .m_change_cbdata    = mdc_change_cbdata,
1829         .m_close            = mdc_close,
1830         .m_create           = mdc_create,
1831         .m_done_writing     = mdc_done_writing,
1832         .m_enqueue          = mdc_enqueue,
1833         .m_getattr          = mdc_getattr,
1834         .m_getattr_name     = mdc_getattr_name,
1835         .m_intent_lock      = mdc_intent_lock,
1836         .m_link             = mdc_link,
1837         .m_is_subdir        = mdc_is_subdir,
1838         .m_rename           = mdc_rename,
1839         .m_setattr          = mdc_setattr,
1840         .m_setxattr         = mdc_setxattr,
1841         .m_getxattr         = mdc_getxattr,
1842         .m_sync             = mdc_sync,
1843         .m_readpage         = mdc_readpage,
1844         .m_unlink           = mdc_unlink,
1845         .m_cancel_unused    = mdc_cancel_unused,
1846         .m_init_ea_size     = mdc_init_ea_size,
1847         .m_set_lock_data    = mdc_set_lock_data,
1848         .m_lock_match       = mdc_lock_match,
1849         .m_get_lustre_md    = mdc_get_lustre_md,
1850         .m_free_lustre_md   = mdc_free_lustre_md,
1851         .m_set_open_replay_data = mdc_set_open_replay_data,
1852         .m_clear_open_replay_data = mdc_clear_open_replay_data,
1853         .m_renew_capa       = mdc_renew_capa,
1854         .m_unpack_capa      = mdc_unpack_capa,
1855         .m_get_remote_perm  = mdc_get_remote_perm,
1856         .m_intent_getattr_async = mdc_intent_getattr_async,
1857         .m_revalidate_lock      = mdc_revalidate_lock
1858 };
1859
1860 int __init mdc_init(void)
1861 {
1862         int rc;
1863         struct lprocfs_static_vars lvars = { 0 };
1864         lprocfs_mdc_init_vars(&lvars);
1865
1866         request_module("lquota");
1867         quota_interface = PORTAL_SYMBOL_GET(mdc_quota_interface);
1868         init_obd_quota_ops(quota_interface, &mdc_obd_ops);
1869
1870         rc = class_register_type(&mdc_obd_ops, &mdc_md_ops, lvars.module_vars,
1871                                  LUSTRE_MDC_NAME, NULL);
1872         if (rc && quota_interface)
1873                 PORTAL_SYMBOL_PUT(mdc_quota_interface);
1874
1875         RETURN(rc);
1876 }
1877
1878 #ifdef __KERNEL__
1879 static void /*__exit*/ mdc_exit(void)
1880 {
1881         if (quota_interface)
1882                 PORTAL_SYMBOL_PUT(mdc_quota_interface);
1883
1884         class_unregister_type(LUSTRE_MDC_NAME);
1885 }
1886
1887 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
1888 MODULE_DESCRIPTION("Lustre Metadata Client");
1889 MODULE_LICENSE("GPL");
1890
1891 module_init(mdc_init);
1892 module_exit(mdc_exit);
1893 #endif