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 static quota_interface_t *quota_interface;
  61
  62 #define REQUEST_MINOR 244
  63
  64 static quota_interface_t *quota_interface;
  65 extern quota_interface_t mdc_quota_interface;
  66
  67 static int mdc_cleanup(struct obd_device *obd);
  68
  69 static struct obd_capa *mdc_unpack_capa(struct ptlrpc_request *req,
  70                                         const struct req_msg_field *field)
  71 {
  72         struct lustre_capa *capa;
  73         struct obd_capa *oc;
  74
  75         /* swabbed already in mdc_enqueue */
  76         capa = req_capsule_server_get(&req->rq_pill, field);
  77         if (capa == NULL)
  78                 return ERR_PTR(-EPROTO);
  79
  80         oc = alloc_capa(CAPA_SITE_CLIENT);
  81         if (!oc) {
  82                 CDEBUG(D_INFO, "alloc capa failed!\n");
  83                 return ERR_PTR(-ENOMEM);
  84         }
  85         oc->c_capa = *capa;
  86
  87         return oc;
  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                 struct obd_capa *oc;
 121
 122                 oc = mdc_unpack_capa(req, &RMF_CAPA1);
 123                 if (IS_ERR(oc))
 124                         GOTO(out, rc = PTR_ERR(oc));
 125                 *pc = oc;
 126         }
 127
 128         *rootfid = body->fid1;
 129         CDEBUG(D_NET,
 130                "root fid="DFID", last_committed="LPU64", last_xid="LPU64"\n",
 131                PFID(rootfid),
 132                lustre_msg_get_last_committed(req->rq_repmsg),
 133                lustre_msg_get_last_xid(req->rq_repmsg));
 134         EXIT;
 135 out:
 136         ptlrpc_req_finished(req);
 137         return rc;
 138 }
 139
 140 /* This should be mdc_get_info("rootfid") */
 141 int mdc_getstatus(struct obd_export *exp, struct lu_fid *rootfid,
 142                   struct obd_capa **pc)
 143 {
 144         return send_getstatus(class_exp2cliimp(exp), rootfid, pc,
 145                               LUSTRE_IMP_FULL, 0);
 146 }
 147
 148 /*
 149  * This function now is known to always saying that it will receive 4 buffers
 150  * from server. Even for cases when acl_size and md_size is zero, RPC header
 151  * will contain 4 fields and RPC itself will contain zero size fields. This is
 152  * because mdt_getattr*() _always_ returns 4 fields, but if acl is not needed
 153  * and thus zero, it shirinks it, making zero size. The same story about
 154  * md_size. And this is course of problem when client waits for smaller number
 155  * of fields. This issue will be fixed later when client gets aware of RPC
 156  * layouts.  --umka
 157  */
 158 static int mdc_getattr_common(struct obd_export *exp,
 159                               struct ptlrpc_request *req)
 160 {
 161         struct req_capsule *pill = &req->rq_pill;
 162         struct mdt_body    *body;
 163         void               *eadata;
 164         int                 rc;
 165         ENTRY;
 166
 167         /* Request message already built. */
 168         rc = ptlrpc_queue_wait(req);
 169         if (rc != 0)
 170                 RETURN(rc);
 171
 172         /* sanity check for the reply */
 173         body = req_capsule_server_get(pill, &RMF_MDT_BODY);
 174         if (body == NULL)
 175                 RETURN(-EPROTO);
 176
 177         CDEBUG(D_NET, "mode: %o\n", body->mode);
 178
 179         if (body->eadatasize != 0) {
 180                 eadata = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
 181                                                       body->eadatasize);
 182                 if (eadata == NULL)
 183                         RETURN(-EPROTO);
 184         }
 185
 186         if (body->valid & OBD_MD_FLMODEASIZE) {
 187                 struct client_obd *cli = &exp->exp_obd->u.cli;
 188
 189                 if (cli->cl_max_mds_easize < body->max_mdsize)
 190                         cli->cl_max_mds_easize = body->max_mdsize;
 191                 if (cli->cl_max_mds_cookiesize < body->max_cookiesize)
 192                         cli->cl_max_mds_cookiesize = body->max_cookiesize;
 193         }
 194
 195         if (body->valid & OBD_MD_FLRMTPERM) {
 196                 struct mdt_remote_perm *perm;
 197
 198                 LASSERT(client_is_remote(exp));
 199                 perm = req_capsule_server_swab_get(pill, &RMF_ACL,
 200                                                 lustre_swab_mdt_remote_perm);
 201                 if (perm == NULL)
 202                         RETURN(-EPROTO);
 203         }
 204
 205         if (body->valid & OBD_MD_FLMDSCAPA) {
 206                 struct lustre_capa *capa;
 207                 capa = req_capsule_server_get(pill, &RMF_CAPA1);
 208                 if (capa == NULL)
 209                         RETURN(-EPROTO);
 210         }
 211
 212         RETURN(0);
 213 }
 214
 215 int mdc_getattr(struct obd_export *exp, const struct lu_fid *fid,
 216                 struct obd_capa *oc, obd_valid valid, int ea_size,
 217                 struct ptlrpc_request **request)
 218 {
 219         struct ptlrpc_request *req;
 220         int                    rc;
 221         ENTRY;
 222
 223         *request = NULL;
 224         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
 225         if (req == NULL)
 226                 RETURN(-ENOMEM);
 227
 228         mdc_set_capa_size(req, &RMF_CAPA1, oc);
 229
 230         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
 231         if (rc) {
 232                 ptlrpc_request_free(req);
 233                 RETURN(rc);
 234         }
 235
 236         /* MDS_BFLAG_EXT_FLAGS: request "new" flags(bug 9486) */
 237         mdc_pack_body(req, fid, oc, valid, ea_size, -1, MDS_BFLAG_EXT_FLAGS);
 238
 239         req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER, ea_size);
 240         if (valid & OBD_MD_FLRMTPERM) {
 241                 LASSERT(client_is_remote(exp));
 242                 req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
 243                                      sizeof(struct mdt_remote_perm));
 244         }
 245         ptlrpc_request_set_replen(req);
 246
 247         rc = mdc_getattr_common(exp, req);
 248         if (rc)
 249                 ptlrpc_req_finished(req);
 250         else
 251                 *request = req;
 252         RETURN(rc);
 253 }
 254
 255 int mdc_getattr_name(struct obd_export *exp, const struct lu_fid *fid,
 256                      struct obd_capa *oc, const char *filename, int namelen,
 257                      obd_valid valid, int ea_size, __u32 suppgid,
 258                      struct ptlrpc_request **request)
 259 {
 260         struct ptlrpc_request *req;
 261         int                    rc;
 262         ENTRY;
 263
 264         *request = NULL;
 265         req = ptlrpc_request_alloc(class_exp2cliimp(exp),
 266                                    &RQF_MDS_GETATTR_NAME);
 267         if (req == NULL)
 268                 RETURN(-ENOMEM);
 269
 270         mdc_set_capa_size(req, &RMF_CAPA1, oc);
 271         req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT, namelen);
 272
 273         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR_NAME);
 274         if (rc) {
 275                 ptlrpc_request_free(req);
 276                 RETURN(rc);
 277         }
 278
 279         /* MDS_BFLAG_EXT_FLAGS: request "new" flags(bug 9486) */
 280         mdc_pack_body(req, fid, oc, valid, ea_size, suppgid,
 281                       MDS_BFLAG_EXT_FLAGS);
 282
 283         if (filename) {
 284                 char *name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
 285                 LASSERT(strnlen(filename, namelen) == namelen - 1);
 286                 memcpy(name, filename, namelen);
 287         }
 288
 289         req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER, ea_size);
 290         ptlrpc_request_set_replen(req);
 291
 292         rc = mdc_getattr_common(exp, req);
 293         if (rc)
 294                 ptlrpc_req_finished(req);
 295         else
 296                 *request = req;
 297         RETURN(rc);
 298 }
 299
 300 static int mdc_is_subdir(struct obd_export *exp,
 301                          const struct lu_fid *pfid,
 302                          const struct lu_fid *cfid,
 303                          struct ptlrpc_request **request)
 304 {
 305         struct ptlrpc_request  *req;
 306         int                     rc;
 307
 308         ENTRY;
 309
 310         *request = NULL;
 311         req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
 312                                         &RQF_MDS_IS_SUBDIR, LUSTRE_MDS_VERSION,
 313                                         MDS_IS_SUBDIR);
 314         if (req == NULL)
 315                 RETURN(-ENOMEM);
 316
 317         mdc_is_subdir_pack(req, pfid, cfid, 0);
 318         ptlrpc_request_set_replen(req);
 319
 320         rc = ptlrpc_queue_wait(req);
 321         if (rc && rc != -EREMOTE)
 322                 ptlrpc_req_finished(req);
 323         else
 324                 *request = req;
 325         RETURN(rc);
 326 }
 327
 328 static int mdc_xattr_common(struct obd_export *exp,const struct req_format *fmt,
 329                             const struct lu_fid *fid,
 330                             struct obd_capa *oc, int opcode, obd_valid valid,
 331                             const char *xattr_name, const char *input,
 332                             int input_size, int output_size, int flags,
 333                             __u32 suppgid, struct ptlrpc_request **request)
 334 {
 335         struct ptlrpc_request *req;
 336         int   xattr_namelen = 0;
 337         char *tmp;
 338         int   rc;
 339         ENTRY;
 340
 341         *request = NULL;
 342         req = ptlrpc_request_alloc(class_exp2cliimp(exp), fmt);
 343         if (req == NULL)
 344                 RETURN(-ENOMEM);
 345
 346         mdc_set_capa_size(req, &RMF_CAPA1, oc);
 347         if (xattr_name) {
 348                 xattr_namelen = strlen(xattr_name) + 1;
 349                 req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
 350                                      xattr_namelen);
 351         }
 352         if (input_size) {
 353                 LASSERT(input);
 354                 req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_CLIENT,
 355                                      input_size);
 356         }
 357
 358         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, opcode);
 359         if (rc) {
 360                 ptlrpc_request_free(req);
 361                 RETURN(rc);
 362         }
 363
 364         if (opcode == MDS_REINT) {
 365                 struct mdt_rec_setxattr *rec;
 366
 367                 CLASSERT(sizeof(struct mdt_rec_setxattr) ==
 368                          sizeof(struct mdt_rec_reint));
 369                 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
 370                 rec->sx_opcode = REINT_SETXATTR;
 371                 /* TODO:
 372                  *  cfs_curproc_fs{u,g}id() should replace
 373                  *  current->fs{u,g}id for portability.
 374                  */
 375                 rec->sx_fsuid  = current->fsuid;
 376                 rec->sx_fsgid  = current->fsgid;
 377                 rec->sx_cap    = current->cap_effective;
 378                 rec->sx_suppgid1 = suppgid;
 379                 rec->sx_suppgid2 = -1;
 380                 rec->sx_fid    = *fid;
 381                 rec->sx_valid  = valid | OBD_MD_FLCTIME;
 382                 rec->sx_time   = cfs_time_current_sec();
 383                 rec->sx_size   = output_size;
 384                 rec->sx_flags  = flags;
 385
 386                 mdc_pack_capa(req, &RMF_CAPA1, oc);
 387         } else {
 388                 mdc_pack_body(req, fid, oc, valid, output_size, suppgid, flags);
 389         }
 390
 391         if (xattr_name) {
 392                 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
 393                 memcpy(tmp, xattr_name, xattr_namelen);
 394         }
 395         if (input_size) {
 396                 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
 397                 memcpy(tmp, input, input_size);
 398         }
 399
 400         if (req_capsule_has_field(&req->rq_pill, &RMF_EADATA, RCL_SERVER))
 401                 req_capsule_set_size(&req->rq_pill, &RMF_EADATA,
 402                                      RCL_SERVER, output_size);
 403         ptlrpc_request_set_replen(req);
 404
 405         /* make rpc */
 406         if (opcode == MDS_REINT)
 407                 mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
 408
 409         rc = ptlrpc_queue_wait(req);
 410
 411         if (opcode == MDS_REINT)
 412                 mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
 413
 414         if (rc)
 415                 ptlrpc_req_finished(req);
 416         else
 417                 *request = req;
 418         RETURN(rc);
 419 }
 420
 421 int mdc_setxattr(struct obd_export *exp, const struct lu_fid *fid,
 422                  struct obd_capa *oc, obd_valid valid, const char *xattr_name,
 423                  const char *input, int input_size, int output_size,
 424                  int flags, __u32 suppgid, struct ptlrpc_request **request)
 425 {
 426         return mdc_xattr_common(exp, &RQF_MDS_REINT_SETXATTR,
 427                                 fid, oc, MDS_REINT, valid, xattr_name,
 428                                 input, input_size, output_size, flags,
 429                                 suppgid, request);
 430 }
 431
 432 int mdc_getxattr(struct obd_export *exp, const struct lu_fid *fid,
 433                  struct obd_capa *oc, obd_valid valid, const char *xattr_name,
 434                  const char *input, int input_size, int output_size,
 435                  int flags, struct ptlrpc_request **request)
 436 {
 437         return mdc_xattr_common(exp, &RQF_MDS_GETXATTR,
 438                                 fid, oc, MDS_GETXATTR, valid, xattr_name,
 439                                 input, input_size, output_size, flags,
 440                                 -1, request);
 441 }
 442
 443 #ifdef CONFIG_FS_POSIX_ACL
 444 static int mdc_unpack_acl(struct ptlrpc_request *req, struct lustre_md *md)
 445 {
 446         struct req_capsule     *pill = &req->rq_pill;
 447         struct mdt_body        *body = md->body;
 448         struct posix_acl       *acl;
 449         void                   *buf;
 450         int                     rc;
 451         ENTRY;
 452
 453         if (!body->aclsize)
 454                 RETURN(0);
 455
 456         buf = req_capsule_server_sized_get(pill, &RMF_ACL, body->aclsize);
 457
 458         if (!buf)
 459                 RETURN(-EPROTO);
 460
 461         acl = posix_acl_from_xattr(buf, body->aclsize);
 462         if (IS_ERR(acl)) {
 463                 rc = PTR_ERR(acl);
 464                 CERROR("convert xattr to acl: %d\n", rc);
 465                 RETURN(rc);
 466         }
 467
 468         rc = posix_acl_valid(acl);
 469         if (rc) {
 470                 CERROR("validate acl: %d\n", rc);
 471                 posix_acl_release(acl);
 472                 RETURN(rc);
 473         }
 474
 475         md->posix_acl = acl;
 476         RETURN(0);
 477 }
 478 #else
 479 #define mdc_unpack_acl(req, md) 0
 480 #endif
 481
 482 int mdc_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
 483                       struct obd_export *dt_exp, struct obd_export *md_exp,
 484                       struct lustre_md *md)
 485 {
 486         struct req_capsule *pill = &req->rq_pill;
 487         int rc;
 488         ENTRY;
 489
 490         LASSERT(md);
 491         memset(md, 0, sizeof(*md));
 492
 493         md->body = req_capsule_server_get(pill, &RMF_MDT_BODY);
 494         LASSERT(md->body != NULL);
 495
 496         if (md->body->valid & OBD_MD_FLEASIZE) {
 497                 int lmmsize;
 498                 struct lov_mds_md *lmm;
 499
 500                 if (!S_ISREG(md->body->mode)) {
 501                         CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, should be a "
 502                                "regular file, but is not\n");
 503                         GOTO(out, rc = -EPROTO);
 504                 }
 505
 506                 if (md->body->eadatasize == 0) {
 507                         CDEBUG(D_INFO, "OBD_MD_FLEASIZE set, "
 508                                "but eadatasize 0\n");
 509                         GOTO(out, rc = -EPROTO);
 510                 }
 511                 lmmsize = md->body->eadatasize;
 512                 lmm = req_capsule_server_sized_get(pill, &RMF_MDT_MD, lmmsize);
 513                 if (!lmm)
 514                         GOTO(out, rc = -EPROTO);
 515
 516                 rc = obd_unpackmd(dt_exp, &md->lsm, lmm, lmmsize);
 517                 if (rc < 0)
 518                         GOTO(out, rc);
 519
 520                 if (rc < sizeof(*md->lsm)) {
 521                         CDEBUG(D_INFO, "lsm size too small: "
 522                                "rc < sizeof (*md->lsm) (%d < %d)\n",
 523                                rc, (int)sizeof(*md->lsm));
 524                         GOTO(out, rc = -EPROTO);
 525                 }
 526
 527         } else if (md->body->valid & OBD_MD_FLDIREA) {
 528                 int lmvsize;
 529                 struct lov_mds_md *lmv;
 530
 531                 if(!S_ISDIR(md->body->mode)) {
 532                         CDEBUG(D_INFO, "OBD_MD_FLDIREA set, should be a "
 533                                "directory, but is not\n");
 534                         GOTO(out, rc = -EPROTO);
 535                 }
 536
 537                 if (md->body->eadatasize == 0) {
 538                         CDEBUG(D_INFO, "OBD_MD_FLDIREA is set, "
 539                                "but eadatasize 0\n");
 540                         RETURN(-EPROTO);
 541                 }
 542                 if (md->body->valid & OBD_MD_MEA) {
 543                         lmvsize = md->body->eadatasize;
 544                         lmv = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
 545                                                            lmvsize);
 546                         if (!lmv)
 547                                 GOTO(out, rc = -EPROTO);
 548
 549                         rc = obd_unpackmd(md_exp, (void *)&md->mea, lmv,
 550                                           lmvsize);
 551                         if (rc < 0)
 552                                 GOTO(out, rc);
 553
 554                         if (rc < sizeof(*md->mea)) {
 555                                 CDEBUG(D_INFO, "size too small:  "
 556                                        "rc < sizeof(*md->mea) (%d < %d)\n",
 557                                         rc, (int)sizeof(*md->mea));
 558                                 GOTO(out, rc = -EPROTO);
 559                         }
 560                 }
 561         }
 562         rc = 0;
 563
 564         if (md->body->valid & OBD_MD_FLRMTPERM) {
 565                 /* remote permission */
 566                 LASSERT(client_is_remote(exp));
 567                 md->remote_perm = req_capsule_server_swab_get(pill, &RMF_ACL,
 568                                                 lustre_swab_mdt_remote_perm);
 569                 if (!md->remote_perm)
 570                         GOTO(out, rc = -EPROTO);
 571         }
 572         else if (md->body->valid & OBD_MD_FLACL) {
 573                 /* for ACL, it's possible that FLACL is set but aclsize is zero.
 574                  * only when aclsize != 0 there's an actual segment for ACL
 575                  * in reply buffer.
 576                  */
 577                 if (md->body->aclsize) {
 578                         rc = mdc_unpack_acl(req, md);
 579                         if (rc)
 580                                 GOTO(out, rc);
 581 #ifdef CONFIG_FS_POSIX_ACL
 582                 } else {
 583                         md->posix_acl = NULL;
 584 #endif
 585                 }
 586         }
 587         if (md->body->valid & OBD_MD_FLMDSCAPA) {
 588                 struct obd_capa *oc = mdc_unpack_capa(req, &RMF_CAPA1);
 589
 590                 if (IS_ERR(oc))
 591                         GOTO(out, rc = PTR_ERR(oc));
 592                 md->mds_capa = oc;
 593         }
 594
 595         if (md->body->valid & OBD_MD_FLOSSCAPA) {
 596                 struct obd_capa *oc = mdc_unpack_capa(req, &RMF_CAPA2);
 597
 598                 if (IS_ERR(oc))
 599                         GOTO(out, rc = PTR_ERR(oc));
 600                 md->oss_capa = oc;
 601         }
 602
 603         EXIT;
 604 out:
 605         if (rc) {
 606                 if (md->oss_capa)
 607                         free_capa(md->oss_capa);
 608                 if (md->mds_capa)
 609                         free_capa(md->mds_capa);
 610 #ifdef CONFIG_FS_POSIX_ACL
 611                 posix_acl_release(md->posix_acl);
 612 #endif
 613                 if (md->lsm)
 614                         obd_free_memmd(dt_exp, &md->lsm);
 615         }
 616         return rc;
 617 }
 618
 619 int mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
 620 {
 621         ENTRY;
 622         RETURN(0);
 623 }
 624
 625 static void mdc_replay_open(struct ptlrpc_request *req)
 626 {
 627         struct md_open_data *mod = req->rq_cb_data;
 628         struct ptlrpc_request *cur, *tmp;
 629         struct obd_client_handle *och;
 630         struct lustre_handle old;
 631         struct mdt_body *body;
 632         ENTRY;
 633
 634         if (mod == NULL) {
 635                 DEBUG_REQ(D_ERROR, req,
 636                           "Can't properly replay without open data.");
 637                 EXIT;
 638                 return;
 639         }
 640
 641         body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
 642         LASSERT(body != NULL);
 643
 644         och = mod->mod_och;
 645         if (och != NULL) {
 646                 struct lustre_handle *file_fh;
 647
 648                 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
 649
 650                 file_fh = &och->och_fh;
 651                 CDEBUG(D_HA, "updating handle from "LPX64" to "LPX64"\n",
 652                        file_fh->cookie, body->handle.cookie);
 653                 old = *file_fh;
 654                 *file_fh = body->handle;
 655         }
 656         list_for_each_entry_safe(cur, tmp, &mod->mod_replay_list, rq_mod_list) {
 657                 int opc = lustre_msg_get_opc(cur->rq_reqmsg);
 658                 struct mdt_epoch *epoch = NULL;
 659
 660                 if (opc == MDS_CLOSE || opc == MDS_DONE_WRITING) {
 661                         epoch = req_capsule_client_get(&cur->rq_pill,
 662                                                &RMF_MDT_EPOCH);
 663                         LASSERT(epoch);
 664                         DEBUG_REQ(D_HA, cur, "updating %s body with new fh",
 665                                   opc == MDS_CLOSE ? "CLOSE" : "DONE_WRITING");
 666                 } else if (opc == MDS_REINT) {
 667                         struct mdt_rec_setattr *rec;
 668
 669                         /* Check this is REINT_SETATTR. */
 670                         rec = req_capsule_client_get(&cur->rq_pill,
 671                                                &RMF_REC_REINT);
 672                         LASSERT(rec && rec->sa_opcode == REINT_SETATTR);
 673
 674                         epoch = req_capsule_client_get(&cur->rq_pill,
 675                                                &RMF_MDT_EPOCH);
 676                         LASSERT(epoch);
 677                         DEBUG_REQ(D_HA, cur, "updating REINT_SETATTR body "
 678                                   "with new fh");
 679                 }
 680                 if (epoch) {
 681                         if (och != NULL)
 682                                 LASSERT(!memcmp(&old, &epoch->handle,
 683                                                 sizeof(old)));
 684                         epoch->handle = body->handle;
 685                 }
 686         }
 687         EXIT;
 688 }
 689
 690 void mdc_commit_delayed(struct ptlrpc_request *req)
 691 {
 692         struct md_open_data *mod = req->rq_cb_data;
 693         struct ptlrpc_request *cur, *tmp;
 694
 695         DEBUG_REQ(D_HA, req, "req committed");
 696
 697         if (mod == NULL)
 698                 return;
 699
 700         req->rq_cb_data = NULL;
 701         req->rq_commit_cb = NULL;
 702         list_del_init(&req->rq_mod_list);
 703         if (req->rq_sequence) {
 704                 list_for_each_entry_safe(cur, tmp, &mod->mod_replay_list,
 705                                          rq_mod_list) {
 706                         LASSERT(cur != LP_POISON);
 707                         LASSERT(cur->rq_type != LI_POISON);
 708                         DEBUG_REQ(D_HA, cur, "req balanced");
 709                         LASSERT(cur->rq_transno != 0);
 710                         LASSERT(cur->rq_import == req->rq_import);
 711
 712                         /* We no longer want to preserve this for transno-
 713                          * unconditional replay. */
 714                         spin_lock(&cur->rq_lock);
 715                         cur->rq_replay = 0;
 716                         spin_unlock(&cur->rq_lock);
 717                 }
 718         }
 719
 720         if (list_empty(&mod->mod_replay_list)) {
 721                 if (mod->mod_och != NULL)
 722                         mod->mod_och->och_mod = NULL;
 723
 724                 OBD_FREE_PTR(mod);
 725         }
 726 }
 727
 728 int mdc_set_open_replay_data(struct obd_export *exp,
 729                              struct obd_client_handle *och,
 730                              struct ptlrpc_request *open_req)
 731 {
 732         struct md_open_data   *mod;
 733         struct mdt_rec_create *rec;
 734         struct mdt_body       *body;
 735         struct obd_import     *imp = open_req->rq_import;
 736         ENTRY;
 737
 738         if (!open_req->rq_replay)
 739                 RETURN(0);
 740
 741         rec = req_capsule_client_get(&open_req->rq_pill, &RMF_REC_REINT);
 742         body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
 743         LASSERT(rec != NULL);
 744         /* Incoming message in my byte order (it's been swabbed). */
 745         /* Outgoing messages always in my byte order. */
 746         LASSERT(body != NULL);
 747
 748         /* Only if the import is replayable, we set replay_open data */
 749         if (och && imp->imp_replayable) {
 750                 OBD_ALLOC_PTR(mod);
 751                 if (mod == NULL) {
 752                         DEBUG_REQ(D_ERROR, open_req,
 753                                   "Can't allocate md_open_data");
 754                         RETURN(0);
 755                 }
 756                 CFS_INIT_LIST_HEAD(&mod->mod_replay_list);
 757
 758                 spin_lock(&open_req->rq_lock);
 759                 och->och_mod = mod;
 760                 mod->mod_och = och;
 761                 open_req->rq_cb_data = mod;
 762                 list_add_tail(&open_req->rq_mod_list, &mod->mod_replay_list);
 763                 open_req->rq_commit_cb = mdc_commit_delayed;
 764                 spin_unlock(&open_req->rq_lock);
 765         }
 766
 767         rec->cr_fid2 = body->fid1;
 768         rec->cr_ioepoch = body->ioepoch;
 769         rec->cr_old_handle.cookie = body->handle.cookie;
 770         open_req->rq_replay_cb = mdc_replay_open;
 771         if (!fid_is_sane(&body->fid1)) {
 772                 DEBUG_REQ(D_ERROR, open_req, "Saving replay request with "
 773                           "insane fid");
 774                 LBUG();
 775         }
 776
 777         DEBUG_REQ(D_RPCTRACE, open_req, "Set up open replay data");
 778         RETURN(0);
 779 }
 780
 781 int mdc_clear_open_replay_data(struct obd_export *exp,
 782                                struct obd_client_handle *och)
 783 {
 784         struct md_open_data *mod = och->och_mod;
 785         ENTRY;
 786
 787         /*
 788          * Don't free the structure now (it happens in mdc_commit_delayed(),
 789          * after the last request is removed from its replay list),
 790          * but make sure that replay doesn't poke at the och, which is about to
 791          * be freed.
 792          */
 793         LASSERT(mod != LP_POISON);
 794         if (mod != NULL)
 795                 mod->mod_och = NULL;
 796
 797         och->och_mod = NULL;
 798         RETURN(0);
 799 }
 800
 801 int mdc_close(struct obd_export *exp, struct md_op_data *op_data,
 802               struct md_open_data *mod, struct ptlrpc_request **request)
 803 {
 804         struct obd_device     *obd = class_exp2obd(exp);
 805         struct ptlrpc_request *req;
 806         int                    rc;
 807         ENTRY;
 808
 809         *request = NULL;
 810         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_CLOSE);
 811         if (req == NULL)
 812                 RETURN(-ENOMEM);
 813
 814         mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
 815
 816         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE);
 817         if (rc) {
 818                 ptlrpc_request_free(req);
 819                 RETURN(rc);
 820         }
 821
 822         /* To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a
 823          * portal whose threads are not taking any DLM locks and are therefore
 824          * always progressing */
 825         req->rq_request_portal = MDS_READPAGE_PORTAL;
 826         ptlrpc_at_set_req_timeout(req);
 827
 828         /* Ensure that this close's handle is fixed up during replay. */
 829         if (likely(mod != NULL))
 830                 list_add_tail(&req->rq_mod_list, &mod->mod_replay_list);
 831         else
 832                 CDEBUG(D_HA, "couldn't find open req; expecting close error\n");
 833
 834         mdc_close_pack(req, op_data);
 835
 836         req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
 837                              obd->u.cli.cl_max_mds_easize);
 838         req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_SERVER,
 839                              obd->u.cli.cl_max_mds_cookiesize);
 840
 841         ptlrpc_request_set_replen(req);
 842
 843         req->rq_commit_cb = mdc_commit_delayed;
 844         req->rq_replay = 1;
 845         LASSERT(req->rq_cb_data == NULL);
 846         req->rq_cb_data = mod;
 847
 848         mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
 849         rc = ptlrpc_queue_wait(req);
 850         mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
 851
 852         if (req->rq_repmsg == NULL) {
 853                 CDEBUG(D_RPCTRACE, "request failed to send: %p, %d\n", req,
 854                        req->rq_status);
 855                 if (rc == 0)
 856                         rc = req->rq_status ?: -EIO;
 857         } else if (rc == 0 || rc == -EAGAIN) {
 858                 struct mdt_body *body;
 859
 860                 rc = lustre_msg_get_status(req->rq_repmsg);
 861                 if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) {
 862                         DEBUG_REQ(D_ERROR, req, "type == PTL_RPC_MSG_ERR, err "
 863                                   "= %d", rc);
 864                         if (rc > 0)
 865                                 rc = -rc;
 866                 } else if (mod == NULL) {
 867                         if (req->rq_import->imp_replayable)
 868                                 CERROR("Unexpected: can't find md_open_data,"
 869                                        "but close succeeded with replayable imp"
 870                                        "Please tell "
 871                                        "http://bugzilla.lustre.org/\n");
 872                 }
 873
 874                 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
 875                 if (body == NULL)
 876                         rc = -EPROTO;
 877         }
 878
 879         EXIT;
 880         if (rc != 0 && rc != -EAGAIN && req && req->rq_commit_cb)
 881                 req->rq_commit_cb(req);
 882
 883         *request = req;
 884         return rc;
 885 }
 886
 887 int mdc_done_writing(struct obd_export *exp, struct md_op_data *op_data,
 888                      struct md_open_data *mod)
 889 {
 890         struct obd_device     *obd = class_exp2obd(exp);
 891         struct ptlrpc_request *req;
 892         int                    rc;
 893         ENTRY;
 894
 895         req = ptlrpc_request_alloc(class_exp2cliimp(exp),
 896                                    &RQF_MDS_DONE_WRITING);
 897         if (req == NULL)
 898                 RETURN(-ENOMEM);
 899
 900         mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
 901         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_DONE_WRITING);
 902         if (rc) {
 903                 ptlrpc_request_free(req);
 904                 RETURN(rc);
 905         }
 906
 907         /* XXX: add DONE_WRITING request to och -- when Size-on-MDS
 908          * recovery will be ready. */
 909         mdc_close_pack(req, op_data);
 910         ptlrpc_request_set_replen(req);
 911         req->rq_replay = 1;
 912         req->rq_cb_data = mod;
 913         req->rq_commit_cb = mdc_commit_delayed;
 914         if (likely(mod != NULL))
 915                 list_add_tail(&req->rq_mod_list, &mod->mod_replay_list);
 916         else
 917                 CDEBUG(D_HA, "couldn't find open req; expecting close error\n");
 918
 919         mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
 920         rc = ptlrpc_queue_wait(req);
 921         mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
 922
 923         /* Close the open replay sequence if an error occured or no SOM
 924          * attribute update is needed. */
 925         if (rc != -EAGAIN)
 926                 ptlrpc_close_replay_seq(req);
 927
 928         if (rc && rc != -EAGAIN && req->rq_commit_cb)
 929                 req->rq_commit_cb(req);
 930
 931         ptlrpc_req_finished(req);
 932         RETURN(rc);
 933 }
 934
 935 #ifdef HAVE_SPLIT_SUPPORT
 936 int mdc_sendpage(struct obd_export *exp, const struct lu_fid *fid,
 937                  const struct page *page, int offset)
 938 {
 939         struct ptlrpc_request   *req;
 940         struct ptlrpc_bulk_desc *desc;
 941         int                      rc;
 942         ENTRY;
 943
 944         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_WRITEPAGE);
 945         if (req == NULL)
 946                 RETURN(-ENOMEM);
 947
 948         /* FIXME: capa doesn't support split yet */
 949         mdc_set_capa_size(req, &RMF_CAPA1, NULL);
 950
 951         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_WRITEPAGE);
 952         if (rc) {
 953                 ptlrpc_request_free(req);
 954                 RETURN(rc);
 955         }
 956
 957         req->rq_request_portal = MDS_READPAGE_PORTAL;
 958         ptlrpc_at_set_req_timeout(req);
 959
 960         desc = ptlrpc_prep_bulk_imp(req, 1, BULK_GET_SOURCE, MDS_BULK_PORTAL);
 961         if (desc == NULL)
 962                 GOTO(out, rc = -ENOMEM);
 963
 964         /* NB req now owns desc and will free it when it gets freed. */
 965         ptlrpc_prep_bulk_page(desc, (struct page *)page, 0, offset);
 966         mdc_readdir_pack(req, 0, offset, fid, NULL);
 967
 968         ptlrpc_request_set_replen(req);
 969         rc = ptlrpc_queue_wait(req);
 970         GOTO(out, rc);
 971 out:
 972         ptlrpc_req_finished(req);
 973         return rc;
 974 }
 975 EXPORT_SYMBOL(mdc_sendpage);
 976 #endif
 977
 978 int mdc_readpage(struct obd_export *exp, const struct lu_fid *fid,
 979                  struct obd_capa *oc, __u64 offset, struct page *page,
 980                  struct ptlrpc_request **request)
 981 {
 982         struct ptlrpc_request   *req;
 983         struct ptlrpc_bulk_desc *desc;
 984         int                      rc;
 985         ENTRY;
 986
 987         *request = NULL;
 988         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_READPAGE);
 989         if (req == NULL)
 990                 RETURN(-ENOMEM);
 991
 992         mdc_set_capa_size(req, &RMF_CAPA1, oc);
 993
 994         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_READPAGE);
 995         if (rc) {
 996                 ptlrpc_request_free(req);
 997                 RETURN(rc);
 998         }
 999
1000         req->rq_request_portal = MDS_READPAGE_PORTAL;
1001         ptlrpc_at_set_req_timeout(req);
1002
1003         desc = ptlrpc_prep_bulk_imp(req, 1, BULK_PUT_SINK, MDS_BULK_PORTAL);
1004         if (desc == NULL) {
1005                 ptlrpc_request_free(req);
1006                 RETURN(-ENOMEM);
1007         }
1008
1009         /* NB req now owns desc and will free it when it gets freed */
1010         ptlrpc_prep_bulk_page(desc, page, 0, CFS_PAGE_SIZE);
1011         mdc_readdir_pack(req, offset, CFS_PAGE_SIZE, fid, oc);
1012
1013         ptlrpc_request_set_replen(req);
1014         rc = ptlrpc_queue_wait(req);
1015         if (rc) {
1016                 ptlrpc_req_finished(req);
1017                 RETURN(rc);
1018         }
1019
1020         if (req->rq_bulk->bd_nob_transferred != CFS_PAGE_SIZE) {
1021                 CERROR("Unexpected # bytes transferred: %d (%ld expected)\n",
1022                         req->rq_bulk->bd_nob_transferred, CFS_PAGE_SIZE);
1023                 ptlrpc_req_finished(req);
1024                 RETURN(-EPROTO);
1025         }
1026
1027         *request = req;
1028         RETURN(0);
1029 }
1030
1031 static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1032                          void *karg, void *uarg)
1033 {
1034         struct obd_device *obd = exp->exp_obd;
1035         struct obd_ioctl_data *data = karg;
1036         struct obd_import *imp = obd->u.cli.cl_import;
1037         struct llog_ctxt *ctxt;
1038         int rc;
1039         ENTRY;
1040
1041         if (!try_module_get(THIS_MODULE)) {
1042                 CERROR("Can't get module. Is it alive?");
1043                 return -EINVAL;
1044         }
1045         switch (cmd) {
1046         case OBD_IOC_CLIENT_RECOVER:
1047                 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1);
1048                 if (rc < 0)
1049                         GOTO(out, rc);
1050                 GOTO(out, rc = 0);
1051         case IOC_OSC_SET_ACTIVE:
1052                 rc = ptlrpc_set_import_active(imp, data->ioc_offset);
1053                 GOTO(out, rc);
1054         case OBD_IOC_PARSE: {
1055                 ctxt = llog_get_context(exp->exp_obd, LLOG_CONFIG_REPL_CTXT);
1056                 rc = class_config_parse_llog(ctxt, data->ioc_inlbuf1, NULL);
1057                 llog_ctxt_put(ctxt);
1058                 GOTO(out, rc);
1059         }
1060 #ifdef __KERNEL__
1061         case OBD_IOC_LLOG_INFO:
1062         case OBD_IOC_LLOG_PRINT: {
1063                 ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
1064                 rc = llog_ioctl(ctxt, cmd, data);
1065                 llog_ctxt_put(ctxt);
1066                 GOTO(out, rc);
1067         }
1068 #endif
1069         case OBD_IOC_POLL_QUOTACHECK:
1070                 rc = lquota_poll_check(quota_interface, exp,
1071                                        (struct if_quotacheck *)karg);
1072                 GOTO(out, rc);
1073         default:
1074                 CERROR("mdc_ioctl(): unrecognised ioctl %#x\n", cmd);
1075                 GOTO(out, rc = -ENOTTY);
1076         }
1077 out:
1078         module_put(THIS_MODULE);
1079
1080         return rc;
1081 }
1082
1083 static int do_set_info_async(struct obd_export *exp,
1084                              obd_count keylen, void *key,
1085                              obd_count vallen, void *val,
1086                              struct ptlrpc_request_set *set)
1087 {
1088         struct obd_import     *imp = class_exp2cliimp(exp);
1089         struct ptlrpc_request *req;
1090         char                  *tmp;
1091         int                    rc;
1092         ENTRY;
1093
1094         if (vallen != sizeof(int))
1095                 RETURN(-EINVAL);
1096
1097         spin_lock(&imp->imp_lock);
1098         if (*((int *)val)) {
1099                 imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY;
1100                 imp->imp_connect_data.ocd_connect_flags |= OBD_CONNECT_RDONLY;
1101         } else {
1102                 imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY;
1103                 imp->imp_connect_data.ocd_connect_flags &= ~OBD_CONNECT_RDONLY;
1104         }
1105         spin_unlock(&imp->imp_lock);
1106
1107         req = ptlrpc_request_alloc(imp, &RQF_MDS_SET_INFO);
1108         if (req == NULL)
1109                 RETURN(-ENOMEM);
1110
1111         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1112                              RCL_CLIENT, keylen);
1113         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1114                              RCL_CLIENT, vallen);
1115         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SET_INFO);
1116         if (rc) {
1117                 ptlrpc_request_free(req);
1118                 RETURN(rc);
1119         }
1120
1121         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1122         memcpy(tmp, key, keylen);
1123         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1124         memcpy(tmp, val, vallen);
1125
1126         ptlrpc_request_set_replen(req);
1127
1128         if (set) {
1129                 ptlrpc_set_add_req(set, req);
1130                 ptlrpc_check_set(set);
1131         } else {
1132                 rc = ptlrpc_queue_wait(req);
1133                 ptlrpc_req_finished(req);
1134         }
1135
1136         RETURN(rc);
1137 }
1138
1139 int mdc_set_info_async(struct obd_export *exp,
1140                        obd_count keylen, void *key,
1141                        obd_count vallen, void *val,
1142                        struct ptlrpc_request_set *set)
1143 {
1144         struct obd_import *imp = class_exp2cliimp(exp);
1145         int                rc = -EINVAL;
1146         ENTRY;
1147
1148         if (KEY_IS(KEY_INIT_RECOV)) {
1149                 if (vallen != sizeof(int))
1150                         RETURN(-EINVAL);
1151                 spin_lock(&imp->imp_lock);
1152                 imp->imp_initial_recov = *(int *)val;
1153                 spin_unlock(&imp->imp_lock);
1154                 CDEBUG(D_HA, "%s: set imp_initial_recov = %d\n",
1155                        exp->exp_obd->obd_name, imp->imp_initial_recov);
1156                 RETURN(0);
1157         }
1158         /* Turn off initial_recov after we try all backup servers once */
1159         if (KEY_IS(KEY_INIT_RECOV_BACKUP)) {
1160                 if (vallen != sizeof(int))
1161                         RETURN(-EINVAL);
1162                 spin_lock(&imp->imp_lock);
1163                 imp->imp_initial_recov_bk = *(int *)val;
1164                 if (imp->imp_initial_recov_bk)
1165                         imp->imp_initial_recov = 1;
1166                 spin_unlock(&imp->imp_lock);
1167                 CDEBUG(D_HA, "%s: set imp_initial_recov_bk = %d\n",
1168                        exp->exp_obd->obd_name, imp->imp_initial_recov_bk);
1169                 RETURN(0);
1170         }
1171         if (KEY_IS(KEY_READ_ONLY)) {
1172                 rc = do_set_info_async(exp, keylen, key, vallen, val, set);
1173                 RETURN(rc);
1174         }
1175         if (KEY_IS(KEY_FLUSH_CTX)) {
1176                 sptlrpc_import_flush_my_ctx(imp);
1177                 RETURN(0);
1178         }
1179         if (KEY_IS(KEY_MDS_CONN)) {
1180                 struct obd_import *imp = class_exp2cliimp(exp);
1181
1182                 /* mds-mds import */
1183                 spin_lock(&imp->imp_lock);
1184                 imp->imp_server_timeout = 1;
1185                 spin_unlock(&imp->imp_lock);
1186                 imp->imp_client->cli_request_portal = MDS_MDS_PORTAL;
1187                 CDEBUG(D_OTHER|D_WARNING, "%s: timeout / 2\n", exp->exp_obd->obd_name);
1188                 RETURN(0);
1189         }
1190
1191         RETURN(rc);
1192 }
1193
1194 int mdc_get_info(struct obd_export *exp, __u32 keylen, void *key,
1195                  __u32 *vallen, void *val, struct lov_stripe_md *lsm)
1196 {
1197         int rc = -EINVAL;
1198
1199         if (KEY_IS(KEY_MAX_EASIZE)) {
1200                 int mdsize, *max_easize;
1201
1202                 if (*vallen != sizeof(int))
1203                         RETURN(-EINVAL);
1204                 mdsize = *(int*)val;
1205                 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize)
1206                         exp->exp_obd->u.cli.cl_max_mds_easize = mdsize;
1207                 max_easize = val;
1208                 *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize;
1209                 RETURN(0);
1210         }
1211         if (KEY_IS(KEY_CONN_DATA)) {
1212                 struct obd_import *imp = class_exp2cliimp(exp);
1213                 struct obd_connect_data *data = val;
1214
1215                 if (*vallen != sizeof(*data))
1216                         RETURN(-EINVAL);
1217
1218                 *data = imp->imp_connect_data;
1219                 RETURN(0);
1220         }
1221
1222         RETURN(rc);
1223 }
1224
1225 static int mdc_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1226                       __u64 max_age, __u32 flags)
1227 {
1228         struct ptlrpc_request *req;
1229         struct obd_statfs     *msfs;
1230         struct obd_import     *imp = NULL;
1231         int                    rc;
1232         ENTRY;
1233
1234
1235         /*Since the request might also come from lprocfs, so we need
1236          *sync this with client_disconnect_export Bug15684*/
1237         down_read(&obd->u.cli.cl_sem);
1238         if (obd->u.cli.cl_import)
1239                 imp = class_import_get(obd->u.cli.cl_import);
1240         up_read(&obd->u.cli.cl_sem);
1241         if (!imp)
1242                 RETURN(-ENODEV);
1243
1244         req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_STATFS,
1245                                         LUSTRE_MDS_VERSION, MDS_STATFS);
1246         if (req == NULL)
1247                 GOTO(output, rc = -ENOMEM);
1248
1249         ptlrpc_request_set_replen(req);
1250
1251         if (flags & OBD_STATFS_NODELAY) {
1252                 /* procfs requests not want stay in wait for avoid deadlock */
1253                 req->rq_no_resend = 1;
1254                 req->rq_no_delay = 1;
1255         }
1256
1257         rc = ptlrpc_queue_wait(req);
1258         if (rc) {
1259                 /* check connection error first */
1260                 if (imp->imp_connect_error)
1261                         rc = imp->imp_connect_error;
1262                 GOTO(out, rc);
1263         }
1264
1265         msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1266         if (msfs == NULL)
1267                 GOTO(out, rc = -EPROTO);
1268
1269         *osfs = *msfs;
1270         EXIT;
1271 out:
1272         ptlrpc_req_finished(req);
1273 output:
1274         class_import_put(imp);
1275         return rc;
1276 }
1277
1278 static int mdc_pin(struct obd_export *exp, const struct lu_fid *fid,
1279                    struct obd_capa *oc, struct obd_client_handle *handle,
1280                    int flags)
1281 {
1282         struct ptlrpc_request *req;
1283         struct mdt_body       *body;
1284         int                    rc;
1285         ENTRY;
1286
1287         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_PIN);
1288         if (req == NULL)
1289                 RETURN(-ENOMEM);
1290
1291         mdc_set_capa_size(req, &RMF_CAPA1, oc);
1292
1293         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_PIN);
1294         if (rc) {
1295                 ptlrpc_request_free(req);
1296                 RETURN(rc);
1297         }
1298
1299         mdc_pack_body(req, fid, oc, 0, 0, -1, flags);
1300
1301         ptlrpc_request_set_replen(req);
1302
1303         mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
1304         rc = ptlrpc_queue_wait(req);
1305         mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
1306         if (rc) {
1307                 CERROR("Pin failed: %d\n", rc);
1308                 GOTO(err_out, rc);
1309         }
1310
1311         body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1312         if (body == NULL)
1313                 GOTO(err_out, rc = -EPROTO);
1314
1315         handle->och_fh = body->handle;
1316         handle->och_magic = OBD_CLIENT_HANDLE_MAGIC;
1317
1318         OBD_ALLOC_PTR(handle->och_mod);
1319         if (handle->och_mod == NULL) {
1320                 DEBUG_REQ(D_ERROR, req, "can't allocate mdc_open_data");
1321                 GOTO(err_out, rc = -ENOMEM);
1322         }
1323         /* will be dropped by unpin */
1324         CFS_INIT_LIST_HEAD(&handle->och_mod->mod_replay_list);
1325         list_add_tail(&req->rq_mod_list, &handle->och_mod->mod_replay_list);
1326
1327         RETURN(0);
1328
1329 err_out:
1330         ptlrpc_req_finished(req);
1331         RETURN(rc);
1332 }
1333
1334 static int mdc_unpin(struct obd_export *exp, struct obd_client_handle *handle,
1335                      int flag)
1336 {
1337         struct ptlrpc_request *req;
1338         struct mdt_body       *body;
1339         int                    rc;
1340         ENTRY;
1341
1342         req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_UNPIN,
1343                                         LUSTRE_MDS_VERSION, MDS_UNPIN);
1344         if (req == NULL)
1345                 RETURN(-ENOMEM);
1346
1347         body = req_capsule_client_get(&req->rq_pill, &RMF_MDT_BODY);
1348         body->handle = handle->och_fh;
1349         body->flags = flag;
1350
1351         ptlrpc_request_set_replen(req);
1352
1353         mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
1354         rc = ptlrpc_queue_wait(req);
1355         mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
1356
1357         if (rc != 0)
1358                 CERROR("Unpin failed: %d\n", rc);
1359
1360         ptlrpc_req_finished(req);
1361
1362         LASSERT(!list_empty(&handle->och_mod->mod_replay_list));
1363         req = list_entry(handle->och_mod->mod_replay_list.next,
1364                          typeof(*req), rq_mod_list);
1365         list_del_init(&req->rq_mod_list);
1366         ptlrpc_req_finished(req);
1367         LASSERT(list_empty(&handle->och_mod->mod_replay_list));
1368
1369         OBD_FREE(handle->och_mod, sizeof(*handle->och_mod));
1370         RETURN(rc);
1371 }
1372
1373 int mdc_sync(struct obd_export *exp, const struct lu_fid *fid,
1374              struct obd_capa *oc, struct ptlrpc_request **request)
1375 {
1376         struct ptlrpc_request *req;
1377         int                    rc;
1378         ENTRY;
1379
1380         *request = NULL;
1381         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_SYNC);
1382         if (req == NULL)
1383                 RETURN(-ENOMEM);
1384
1385         mdc_set_capa_size(req, &RMF_CAPA1, oc);
1386
1387         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SYNC);
1388         if (rc) {
1389                 ptlrpc_request_free(req);
1390                 RETURN(rc);
1391         }
1392
1393         mdc_pack_body(req, fid, oc, 0, 0, -1, 0);
1394
1395         ptlrpc_request_set_replen(req);
1396
1397         rc = ptlrpc_queue_wait(req);
1398         if (rc)
1399                 ptlrpc_req_finished(req);
1400         else
1401                 *request = req;
1402         RETURN(rc);
1403 }
1404
1405 static int mdc_import_event(struct obd_device *obd, struct obd_import *imp,
1406                             enum obd_import_event event)
1407 {
1408         int rc = 0;
1409
1410         LASSERT(imp->imp_obd == obd);
1411
1412         switch (event) {
1413         case IMP_EVENT_DISCON: {
1414 #if 0
1415                 /* XXX Pass event up to OBDs stack. used only for FLD now */
1416                 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DISCON, NULL);
1417 #endif
1418                 break;
1419         }
1420         case IMP_EVENT_INACTIVE: {
1421                 struct client_obd *cli = &obd->u.cli;
1422                 /*
1423                  * Flush current sequence to make client obtain new one
1424                  * from server in case of disconnect/reconnect.
1425                  * If range is already empty then no need to flush it.
1426                  */
1427                 if (cli->cl_seq != NULL &&
1428                     !range_is_exhausted(&cli->cl_seq->lcs_space)) {
1429                         seq_client_flush(cli->cl_seq);
1430                 }
1431
1432                 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
1433                 break;
1434         }
1435         case IMP_EVENT_INVALIDATE: {
1436                 struct ldlm_namespace *ns = obd->obd_namespace;
1437
1438                 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
1439
1440                 break;
1441         }
1442         case IMP_EVENT_ACTIVE: {
1443                 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
1444                 break;
1445         }
1446         case IMP_EVENT_OCD:
1447                 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
1448                 break;
1449
1450         default:
1451                 CERROR("Unknown import event %x\n", event);
1452                 LBUG();
1453         }
1454         RETURN(rc);
1455 }
1456
1457 static int mdc_fid_init(struct obd_export *exp)
1458 {
1459         struct client_obd *cli = &exp->exp_obd->u.cli;
1460         char *prefix;
1461         int rc;
1462         ENTRY;
1463
1464         OBD_ALLOC_PTR(cli->cl_seq);
1465         if (cli->cl_seq == NULL)
1466                 RETURN(-ENOMEM);
1467
1468         OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
1469         if (prefix == NULL)
1470                 GOTO(out_free_seq, rc = -ENOMEM);
1471
1472         snprintf(prefix, MAX_OBD_NAME + 5, "srv-%s",
1473                  exp->exp_obd->obd_name);
1474
1475         /* Init client side sequence-manager */
1476         rc = seq_client_init(cli->cl_seq, exp,
1477                              LUSTRE_SEQ_METADATA,
1478                              prefix, NULL);
1479         OBD_FREE(prefix, MAX_OBD_NAME + 5);
1480         if (rc)
1481                 GOTO(out_free_seq, rc);
1482
1483         RETURN(rc);
1484 out_free_seq:
1485         OBD_FREE_PTR(cli->cl_seq);
1486         cli->cl_seq = NULL;
1487         return rc;
1488 }
1489
1490 static int mdc_fid_fini(struct obd_export *exp)
1491 {
1492         struct client_obd *cli = &exp->exp_obd->u.cli;
1493         ENTRY;
1494
1495         if (cli->cl_seq != NULL) {
1496                 seq_client_fini(cli->cl_seq);
1497                 OBD_FREE_PTR(cli->cl_seq);
1498                 cli->cl_seq = NULL;
1499         }
1500
1501         RETURN(0);
1502 }
1503
1504 int mdc_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
1505                   struct md_op_data *op_data)
1506 {
1507         struct client_obd *cli = &exp->exp_obd->u.cli;
1508         struct lu_client_seq *seq = cli->cl_seq;
1509         ENTRY;
1510         RETURN(seq_client_alloc_fid(seq, fid));
1511 }
1512
1513 /* XXX This method is used only to clear current fid seq
1514  * once fld/mds insert failed */
1515 static int mdc_fid_delete(struct obd_export *exp, const struct lu_fid *fid)
1516 {
1517         struct client_obd *cli = &exp->exp_obd->u.cli;
1518
1519         seq_client_flush(cli->cl_seq);
1520         return 0;
1521 }
1522
1523 static int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg)
1524 {
1525         struct client_obd *cli = &obd->u.cli;
1526         struct lprocfs_static_vars lvars = { 0 };
1527         int rc;
1528         ENTRY;
1529
1530         OBD_ALLOC(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
1531         if (!cli->cl_rpc_lock)
1532                 RETURN(-ENOMEM);
1533         mdc_init_rpc_lock(cli->cl_rpc_lock);
1534
1535         ptlrpcd_addref();
1536
1537         OBD_ALLOC(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock));
1538         if (!cli->cl_setattr_lock)
1539                 GOTO(err_rpc_lock, rc = -ENOMEM);
1540         mdc_init_rpc_lock(cli->cl_setattr_lock);
1541
1542         OBD_ALLOC(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
1543         if (!cli->cl_close_lock)
1544                 GOTO(err_setattr_lock, rc = -ENOMEM);
1545         mdc_init_rpc_lock(cli->cl_close_lock);
1546
1547         rc = client_obd_setup(obd, cfg);
1548         if (rc)
1549                 GOTO(err_close_lock, rc);
1550         lprocfs_mdc_init_vars(&lvars);
1551         lprocfs_obd_setup(obd, lvars.obd_vars);
1552         sptlrpc_lprocfs_cliobd_attach(obd);
1553         ptlrpc_lprocfs_register_obd(obd);
1554
1555         rc = obd_llog_init(obd, &obd->obd_olg, obd, 0, NULL, NULL);
1556         if (rc) {
1557                 mdc_cleanup(obd);
1558                 CERROR("failed to setup llogging subsystems\n");
1559         }
1560
1561         RETURN(rc);
1562
1563 err_close_lock:
1564         OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
1565 err_setattr_lock:
1566         OBD_FREE(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock));
1567 err_rpc_lock:
1568         OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
1569         ptlrpcd_decref();
1570         RETURN(rc);
1571 }
1572
1573 /* Initialize the default and maximum LOV EA and cookie sizes.  This allows
1574  * us to make MDS RPCs with large enough reply buffers to hold the
1575  * maximum-sized (= maximum striped) EA and cookie without having to
1576  * calculate this (via a call into the LOV + OSCs) each time we make an RPC. */
1577 static int mdc_init_ea_size(struct obd_export *exp, int easize,
1578                      int def_easize, int cookiesize)
1579 {
1580         struct obd_device *obd = exp->exp_obd;
1581         struct client_obd *cli = &obd->u.cli;
1582         ENTRY;
1583
1584         if (cli->cl_max_mds_easize < easize)
1585                 cli->cl_max_mds_easize = easize;
1586
1587         if (cli->cl_default_mds_easize < def_easize)
1588                 cli->cl_default_mds_easize = def_easize;
1589
1590         if (cli->cl_max_mds_cookiesize < cookiesize)
1591                 cli->cl_max_mds_cookiesize = cookiesize;
1592
1593         RETURN(0);
1594 }
1595
1596 static int mdc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
1597 {
1598         int rc = 0;
1599         ENTRY;
1600
1601         switch (stage) {
1602         case OBD_CLEANUP_EARLY:
1603         case OBD_CLEANUP_EXPORTS:
1604                 /* If we set up but never connected, the
1605                    client import will not have been cleaned. */
1606                 if (obd->u.cli.cl_import) {
1607                         struct obd_import *imp;
1608                         imp = obd->u.cli.cl_import;
1609                         CERROR("client import never connected\n");
1610                         ptlrpc_invalidate_import(imp);
1611                         ptlrpc_free_rq_pool(imp->imp_rq_pool);
1612                         class_destroy_import(imp);
1613                         obd->u.cli.cl_import = NULL;
1614                 }
1615                 rc = obd_llog_finish(obd, 0);
1616                 if (rc != 0)
1617                         CERROR("failed to cleanup llogging subsystems\n");
1618                 break;
1619         }
1620         RETURN(rc);
1621 }
1622
1623 static int mdc_cleanup(struct obd_device *obd)
1624 {
1625         struct client_obd *cli = &obd->u.cli;
1626
1627         OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
1628         OBD_FREE(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock));
1629         OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
1630
1631         ptlrpc_lprocfs_unregister_obd(obd);
1632         lprocfs_obd_cleanup(obd);
1633         ptlrpcd_decref();
1634
1635         return client_obd_cleanup(obd);
1636 }
1637
1638
1639 static int mdc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
1640                          struct obd_device *tgt, int count,
1641                          struct llog_catid *logid, struct obd_uuid *uuid)
1642 {
1643         struct llog_ctxt *ctxt;
1644         int rc;
1645         ENTRY;
1646
1647         LASSERT(olg == &obd->obd_olg);
1648
1649         rc = llog_setup(obd, olg, LLOG_LOVEA_REPL_CTXT, tgt, 0,
1650                         NULL, &llog_client_ops);
1651         if (rc == 0) {
1652                 ctxt = llog_get_context(obd, LLOG_LOVEA_REPL_CTXT);
1653                 llog_initiator_connect(ctxt);
1654                 llog_ctxt_put(ctxt);
1655         }
1656
1657         RETURN(rc);
1658 }
1659
1660 static int mdc_llog_finish(struct obd_device *obd, int count)
1661 {
1662         struct llog_ctxt *ctxt;
1663         int rc = 0;
1664         ENTRY;
1665
1666         ctxt = llog_get_context(obd, LLOG_LOVEA_REPL_CTXT);
1667         if (ctxt)
1668                 rc = llog_cleanup(ctxt);
1669
1670         RETURN(rc);
1671 }
1672
1673 static int mdc_process_config(struct obd_device *obd, obd_count len, void *buf)
1674 {
1675         struct lustre_cfg *lcfg = buf;
1676         struct lprocfs_static_vars lvars = { 0 };
1677         int rc = 0;
1678
1679         lprocfs_mdc_init_vars(&lvars);
1680
1681         switch (lcfg->lcfg_command) {
1682         case LCFG_SPTLRPC_CONF:
1683                 rc = sptlrpc_cliobd_process_config(obd, lcfg);
1684                 break;
1685         default:
1686                 rc = class_process_proc_param(PARAM_MDC, lvars.obd_vars,
1687                                               lcfg, obd);
1688                 break;
1689         }
1690         return(rc);
1691 }
1692
1693
1694 /* get remote permission for current user on fid */
1695 int mdc_get_remote_perm(struct obd_export *exp, const struct lu_fid *fid,
1696                         struct obd_capa *oc, __u32 suppgid,
1697                         struct ptlrpc_request **request)
1698 {
1699         struct ptlrpc_request  *req;
1700         int                    rc;
1701         ENTRY;
1702
1703         LASSERT(client_is_remote(exp));
1704
1705         *request = NULL;
1706         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
1707         if (req == NULL)
1708                 RETURN(-ENOMEM);
1709
1710         mdc_set_capa_size(req, &RMF_CAPA1, oc);
1711
1712         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
1713         if (rc) {
1714                 ptlrpc_request_free(req);
1715                 RETURN(rc);
1716         }
1717
1718         mdc_pack_body(req, fid, oc, OBD_MD_FLRMTPERM, 0, suppgid, 0);
1719
1720         req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
1721                              sizeof(struct mdt_remote_perm));
1722
1723         ptlrpc_request_set_replen(req);
1724
1725         rc = ptlrpc_queue_wait(req);
1726         if (rc)
1727                 ptlrpc_req_finished(req);
1728         else
1729                 *request = req;
1730         RETURN(rc);
1731 }
1732
1733 static int mdc_interpret_renew_capa(struct ptlrpc_request *req, void *unused,
1734                                     int status)
1735 {
1736         struct obd_capa *oc = req->rq_async_args.pointer_arg[0];
1737         renew_capa_cb_t cb = req->rq_async_args.pointer_arg[1];
1738         struct mdt_body *body = NULL;
1739         struct lustre_capa *capa;
1740         ENTRY;
1741
1742         if (status)
1743                 GOTO(out, capa = ERR_PTR(status));
1744
1745         body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1746         if (body == NULL)
1747                 GOTO(out, capa = ERR_PTR(-EFAULT));
1748
1749         if ((body->valid & OBD_MD_FLOSSCAPA) == 0)
1750                 GOTO(out, capa = ERR_PTR(-ENOENT));
1751
1752         capa = req_capsule_server_get(&req->rq_pill, &RMF_CAPA2);
1753         if (!capa)
1754                 GOTO(out, capa = ERR_PTR(-EFAULT));
1755         EXIT;
1756 out:
1757         cb(oc, capa);
1758         return 0;
1759 }
1760
1761 static int mdc_renew_capa(struct obd_export *exp, struct obd_capa *oc,
1762                           renew_capa_cb_t cb)
1763 {
1764         struct ptlrpc_request *req;
1765         ENTRY;
1766
1767         req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_GETATTR,
1768                                         LUSTRE_MDS_VERSION, MDS_GETATTR);
1769         if (req == NULL)
1770                 RETURN(-ENOMEM);
1771
1772         /* NB, OBD_MD_FLOSSCAPA is set here, but it doesn't necessarily mean the
1773          * capa to renew is oss capa.
1774          */
1775         mdc_pack_body(req, &oc->c_capa.lc_fid, oc, OBD_MD_FLOSSCAPA, 0, -1, 0);
1776         ptlrpc_request_set_replen(req);
1777
1778         req->rq_async_args.pointer_arg[0] = oc;
1779         req->rq_async_args.pointer_arg[1] = cb;
1780         req->rq_interpret_reply = mdc_interpret_renew_capa;
1781         ptlrpcd_add_req(req);
1782         RETURN(0);
1783 }
1784
1785 static int mdc_connect(const struct lu_env *env,
1786                        struct lustre_handle *dlm_handle,
1787                        struct obd_device *obd, struct obd_uuid *cluuid,
1788                        struct obd_connect_data *data,
1789                        void *localdata)
1790 {
1791         struct obd_import *imp = obd->u.cli.cl_import;
1792
1793         /* mds-mds import features */
1794         if (data && (data->ocd_connect_flags & OBD_CONNECT_MDS_MDS)) {
1795                 spin_lock(&imp->imp_lock);
1796                 imp->imp_server_timeout = 1;
1797                 spin_unlock(&imp->imp_lock);
1798                 imp->imp_client->cli_request_portal = MDS_MDS_PORTAL;
1799                 CDEBUG(D_OTHER, "%s: Set 'mds' portal and timeout\n",
1800                        obd->obd_name);
1801         }
1802
1803         return client_connect_import(env, dlm_handle, obd, cluuid, data, NULL);
1804 }
1805
1806 struct obd_ops mdc_obd_ops = {
1807         .o_owner            = THIS_MODULE,
1808         .o_setup            = mdc_setup,
1809         .o_precleanup       = mdc_precleanup,
1810         .o_cleanup          = mdc_cleanup,
1811         .o_add_conn         = client_import_add_conn,
1812         .o_del_conn         = client_import_del_conn,
1813         .o_connect          = mdc_connect,
1814         .o_disconnect       = client_disconnect_export,
1815         .o_iocontrol        = mdc_iocontrol,
1816         .o_set_info_async   = mdc_set_info_async,
1817         .o_statfs           = mdc_statfs,
1818         .o_pin              = mdc_pin,
1819         .o_unpin            = mdc_unpin,
1820         .o_fid_init         = mdc_fid_init,
1821         .o_fid_fini         = mdc_fid_fini,
1822         .o_fid_alloc        = mdc_fid_alloc,
1823         .o_fid_delete       = mdc_fid_delete,
1824         .o_import_event     = mdc_import_event,
1825         .o_llog_init        = mdc_llog_init,
1826         .o_llog_finish      = mdc_llog_finish,
1827         .o_get_info         = mdc_get_info,
1828         .o_process_config  = mdc_process_config,
1829 };
1830
1831 struct md_ops mdc_md_ops = {
1832         .m_getstatus        = mdc_getstatus,
1833         .m_change_cbdata    = mdc_change_cbdata,
1834         .m_close            = mdc_close,
1835         .m_create           = mdc_create,
1836         .m_done_writing     = mdc_done_writing,
1837         .m_enqueue          = mdc_enqueue,
1838         .m_getattr          = mdc_getattr,
1839         .m_getattr_name     = mdc_getattr_name,
1840         .m_intent_lock      = mdc_intent_lock,
1841         .m_link             = mdc_link,
1842         .m_is_subdir        = mdc_is_subdir,
1843         .m_rename           = mdc_rename,
1844         .m_setattr          = mdc_setattr,
1845         .m_setxattr         = mdc_setxattr,
1846         .m_getxattr         = mdc_getxattr,
1847         .m_sync             = mdc_sync,
1848         .m_readpage         = mdc_readpage,
1849         .m_unlink           = mdc_unlink,
1850         .m_cancel_unused    = mdc_cancel_unused,
1851         .m_init_ea_size     = mdc_init_ea_size,
1852         .m_set_lock_data    = mdc_set_lock_data,
1853         .m_lock_match       = mdc_lock_match,
1854         .m_get_lustre_md    = mdc_get_lustre_md,
1855         .m_free_lustre_md   = mdc_free_lustre_md,
1856         .m_set_open_replay_data = mdc_set_open_replay_data,
1857         .m_clear_open_replay_data = mdc_clear_open_replay_data,
1858         .m_renew_capa       = mdc_renew_capa,
1859         .m_get_remote_perm  = mdc_get_remote_perm,
1860         .m_intent_getattr_async = mdc_intent_getattr_async,
1861         .m_revalidate_lock      = mdc_revalidate_lock
1862 };
1863
1864 extern quota_interface_t mdc_quota_interface;
1865
1866 int __init mdc_init(void)
1867 {
1868         int rc;
1869         struct lprocfs_static_vars lvars = { 0 };
1870         lprocfs_mdc_init_vars(&lvars);
1871
1872         request_module("lquota");
1873         quota_interface = PORTAL_SYMBOL_GET(mdc_quota_interface);
1874         init_obd_quota_ops(quota_interface, &mdc_obd_ops);
1875
1876         rc = class_register_type(&mdc_obd_ops, &mdc_md_ops, lvars.module_vars,
1877                                  LUSTRE_MDC_NAME, NULL);
1878         if (rc && quota_interface)
1879                 PORTAL_SYMBOL_PUT(mdc_quota_interface);
1880
1881         RETURN(rc);
1882 }
1883
1884 #ifdef __KERNEL__
1885 static void /*__exit*/ mdc_exit(void)
1886 {
1887         if (quota_interface)
1888                 PORTAL_SYMBOL_PUT(mdc_quota_interface);
1889
1890         class_unregister_type(LUSTRE_MDC_NAME);
1891 }
1892
1893 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
1894 MODULE_DESCRIPTION("Lustre Metadata Client");
1895 MODULE_LICENSE("GPL");
1896
1897 module_init(mdc_init);
1898 module_exit(mdc_exit);
1899 #endif