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 static void mdc_replay_open(struct ptlrpc_request *req)
 620 {
 621         struct md_open_data *mod = req->rq_cb_data;
 622         struct ptlrpc_request *cur, *tmp;
 623         struct obd_client_handle *och;
 624         struct lustre_handle old;
 625         struct mdt_body *body;
 626         ENTRY;
 627
 628         if (mod == NULL) {
 629                 DEBUG_REQ(D_ERROR, req,
 630                           "Can't properly replay without open data.");
 631                 EXIT;
 632                 return;
 633         }
 634
 635         body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
 636         LASSERT(body != NULL);
 637
 638         och = mod->mod_och;
 639         if (och != NULL) {
 640                 struct lustre_handle *file_fh;
 641
 642                 LASSERT(och->och_magic == OBD_CLIENT_HANDLE_MAGIC);
 643
 644                 file_fh = &och->och_fh;
 645                 CDEBUG(D_HA, "updating handle from "LPX64" to "LPX64"\n",
 646                        file_fh->cookie, body->handle.cookie);
 647                 old = *file_fh;
 648                 *file_fh = body->handle;
 649         }
 650         list_for_each_entry_safe(cur, tmp, &mod->mod_replay_list, rq_mod_list) {
 651                 int opc = lustre_msg_get_opc(cur->rq_reqmsg);
 652                 struct mdt_epoch *epoch = NULL;
 653
 654                 if (opc == MDS_CLOSE || opc == MDS_DONE_WRITING) {
 655                         epoch = req_capsule_client_get(&cur->rq_pill,
 656                                                &RMF_MDT_EPOCH);
 657                         LASSERT(epoch);
 658                         DEBUG_REQ(D_HA, cur, "updating %s body with new fh",
 659                                   opc == MDS_CLOSE ? "CLOSE" : "DONE_WRITING");
 660                 } else if (opc == MDS_REINT) {
 661                         struct mdt_rec_setattr *rec;
 662
 663                         /* Check this is REINT_SETATTR. */
 664                         rec = req_capsule_client_get(&cur->rq_pill,
 665                                                &RMF_REC_REINT);
 666                         LASSERT(rec && rec->sa_opcode == REINT_SETATTR);
 667
 668                         epoch = req_capsule_client_get(&cur->rq_pill,
 669                                                &RMF_MDT_EPOCH);
 670                         LASSERT(epoch);
 671                         DEBUG_REQ(D_HA, cur, "updating REINT_SETATTR body "
 672                                   "with new fh");
 673                 }
 674                 if (epoch) {
 675                         if (och != NULL)
 676                                 LASSERT(!memcmp(&old, &epoch->handle,
 677                                                 sizeof(old)));
 678                         epoch->handle = body->handle;
 679                 }
 680         }
 681         EXIT;
 682 }
 683
 684 void mdc_commit_delayed(struct ptlrpc_request *req)
 685 {
 686         struct md_open_data *mod = req->rq_cb_data;
 687         struct ptlrpc_request *cur, *tmp;
 688
 689         DEBUG_REQ(D_HA, req, "req committed");
 690
 691         if (mod == NULL)
 692                 return;
 693
 694         req->rq_cb_data = NULL;
 695         req->rq_commit_cb = NULL;
 696         list_del_init(&req->rq_mod_list);
 697         if (req->rq_sequence) {
 698                 list_for_each_entry_safe(cur, tmp, &mod->mod_replay_list,
 699                                          rq_mod_list) {
 700                         LASSERT(cur != LP_POISON);
 701                         LASSERT(cur->rq_type != LI_POISON);
 702                         DEBUG_REQ(D_HA, cur, "req balanced");
 703                         LASSERT(cur->rq_transno != 0);
 704                         LASSERT(cur->rq_import == req->rq_import);
 705
 706                         /* We no longer want to preserve this for transno-
 707                          * unconditional replay. */
 708                         spin_lock(&cur->rq_lock);
 709                         cur->rq_replay = 0;
 710                         spin_unlock(&cur->rq_lock);
 711                 }
 712         }
 713
 714         if (list_empty(&mod->mod_replay_list)) {
 715                 if (mod->mod_och != NULL)
 716                         mod->mod_och->och_mod = NULL;
 717
 718                 OBD_FREE_PTR(mod);
 719         }
 720 }
 721
 722 int mdc_set_open_replay_data(struct obd_export *exp,
 723                              struct obd_client_handle *och,
 724                              struct ptlrpc_request *open_req)
 725 {
 726         struct md_open_data   *mod;
 727         struct mdt_rec_create *rec;
 728         struct mdt_body       *body;
 729         struct obd_import     *imp = open_req->rq_import;
 730         ENTRY;
 731
 732         if (!open_req->rq_replay)
 733                 RETURN(0);
 734
 735         rec = req_capsule_client_get(&open_req->rq_pill, &RMF_REC_REINT);
 736         body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
 737         LASSERT(rec != NULL);
 738         /* Incoming message in my byte order (it's been swabbed). */
 739         /* Outgoing messages always in my byte order. */
 740         LASSERT(body != NULL);
 741
 742         /* Only if the import is replayable, we set replay_open data */
 743         if (och && imp->imp_replayable) {
 744                 OBD_ALLOC_PTR(mod);
 745                 if (mod == NULL) {
 746                         DEBUG_REQ(D_ERROR, open_req,
 747                                   "Can't allocate md_open_data");
 748                         RETURN(0);
 749                 }
 750                 CFS_INIT_LIST_HEAD(&mod->mod_replay_list);
 751
 752                 spin_lock(&open_req->rq_lock);
 753                 och->och_mod = mod;
 754                 mod->mod_och = och;
 755                 open_req->rq_cb_data = mod;
 756                 list_add_tail(&open_req->rq_mod_list, &mod->mod_replay_list);
 757                 open_req->rq_commit_cb = mdc_commit_delayed;
 758                 spin_unlock(&open_req->rq_lock);
 759         }
 760
 761         rec->cr_fid2 = body->fid1;
 762         rec->cr_ioepoch = body->ioepoch;
 763         rec->cr_old_handle.cookie = body->handle.cookie;
 764         open_req->rq_replay_cb = mdc_replay_open;
 765         if (!fid_is_sane(&body->fid1)) {
 766                 DEBUG_REQ(D_ERROR, open_req, "Saving replay request with "
 767                           "insane fid");
 768                 LBUG();
 769         }
 770
 771         DEBUG_REQ(D_RPCTRACE, open_req, "Set up open replay data");
 772         RETURN(0);
 773 }
 774
 775 int mdc_clear_open_replay_data(struct obd_export *exp,
 776                                struct obd_client_handle *och)
 777 {
 778         struct md_open_data *mod = och->och_mod;
 779         ENTRY;
 780
 781         /*
 782          * Don't free the structure now (it happens in mdc_commit_delayed(),
 783          * after the last request is removed from its replay list),
 784          * but make sure that replay doesn't poke at the och, which is about to
 785          * be freed.
 786          */
 787         LASSERT(mod != LP_POISON);
 788         if (mod != NULL)
 789                 mod->mod_och = NULL;
 790
 791         och->och_mod = NULL;
 792         RETURN(0);
 793 }
 794
 795 int mdc_close(struct obd_export *exp, struct md_op_data *op_data,
 796               struct md_open_data *mod, struct ptlrpc_request **request)
 797 {
 798         struct obd_device     *obd = class_exp2obd(exp);
 799         struct ptlrpc_request *req;
 800         int                    rc;
 801         ENTRY;
 802
 803         *request = NULL;
 804         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_CLOSE);
 805         if (req == NULL)
 806                 RETURN(-ENOMEM);
 807
 808         mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
 809
 810         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_CLOSE);
 811         if (rc) {
 812                 ptlrpc_request_free(req);
 813                 RETURN(rc);
 814         }
 815
 816         /* To avoid a livelock (bug 7034), we need to send CLOSE RPCs to a
 817          * portal whose threads are not taking any DLM locks and are therefore
 818          * always progressing */
 819         req->rq_request_portal = MDS_READPAGE_PORTAL;
 820         ptlrpc_at_set_req_timeout(req);
 821
 822         /* Ensure that this close's handle is fixed up during replay. */
 823         if (likely(mod != NULL))
 824                 list_add_tail(&req->rq_mod_list, &mod->mod_replay_list);
 825         else
 826                 CDEBUG(D_HA, "couldn't find open req; expecting close error\n");
 827
 828         mdc_close_pack(req, op_data);
 829
 830         req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER,
 831                              obd->u.cli.cl_max_mds_easize);
 832         req_capsule_set_size(&req->rq_pill, &RMF_LOGCOOKIES, RCL_SERVER,
 833                              obd->u.cli.cl_max_mds_cookiesize);
 834
 835         ptlrpc_request_set_replen(req);
 836
 837         req->rq_commit_cb = mdc_commit_delayed;
 838         req->rq_replay = 1;
 839         LASSERT(req->rq_cb_data == NULL);
 840         req->rq_cb_data = mod;
 841
 842         mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
 843         rc = ptlrpc_queue_wait(req);
 844         mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
 845
 846         if (req->rq_repmsg == NULL) {
 847                 CDEBUG(D_RPCTRACE, "request failed to send: %p, %d\n", req,
 848                        req->rq_status);
 849                 if (rc == 0)
 850                         rc = req->rq_status ?: -EIO;
 851         } else if (rc == 0 || rc == -EAGAIN) {
 852                 struct mdt_body *body;
 853
 854                 rc = lustre_msg_get_status(req->rq_repmsg);
 855                 if (lustre_msg_get_type(req->rq_repmsg) == PTL_RPC_MSG_ERR) {
 856                         DEBUG_REQ(D_ERROR, req, "type == PTL_RPC_MSG_ERR, err "
 857                                   "= %d", rc);
 858                         if (rc > 0)
 859                                 rc = -rc;
 860                 } else if (mod == NULL) {
 861                         if (req->rq_import->imp_replayable)
 862                                 CERROR("Unexpected: can't find md_open_data,"
 863                                        "but close succeeded with replayable imp"
 864                                        "Please tell "
 865                                        "http://bugzilla.lustre.org/\n");
 866                 }
 867
 868                 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
 869                 if (body == NULL)
 870                         rc = -EPROTO;
 871         }
 872
 873         EXIT;
 874         if (rc != 0 && rc != -EAGAIN && req && req->rq_commit_cb)
 875                 req->rq_commit_cb(req);
 876
 877         *request = req;
 878         return rc;
 879 }
 880
 881 int mdc_done_writing(struct obd_export *exp, struct md_op_data *op_data,
 882                      struct md_open_data *mod)
 883 {
 884         struct obd_device     *obd = class_exp2obd(exp);
 885         struct ptlrpc_request *req;
 886         int                    rc;
 887         ENTRY;
 888
 889         req = ptlrpc_request_alloc(class_exp2cliimp(exp),
 890                                    &RQF_MDS_DONE_WRITING);
 891         if (req == NULL)
 892                 RETURN(-ENOMEM);
 893
 894         mdc_set_capa_size(req, &RMF_CAPA1, op_data->op_capa1);
 895         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_DONE_WRITING);
 896         if (rc) {
 897                 ptlrpc_request_free(req);
 898                 RETURN(rc);
 899         }
 900
 901         /* XXX: add DONE_WRITING request to och -- when Size-on-MDS
 902          * recovery will be ready. */
 903         mdc_close_pack(req, op_data);
 904         ptlrpc_request_set_replen(req);
 905         req->rq_replay = 1;
 906         req->rq_cb_data = mod;
 907         req->rq_commit_cb = mdc_commit_delayed;
 908         if (likely(mod != NULL))
 909                 list_add_tail(&req->rq_mod_list, &mod->mod_replay_list);
 910         else
 911                 CDEBUG(D_HA, "couldn't find open req; expecting close error\n");
 912
 913         mdc_get_rpc_lock(obd->u.cli.cl_close_lock, NULL);
 914         rc = ptlrpc_queue_wait(req);
 915         mdc_put_rpc_lock(obd->u.cli.cl_close_lock, NULL);
 916
 917         /* Close the open replay sequence if an error occured or no SOM
 918          * attribute update is needed. */
 919         if (rc != -EAGAIN)
 920                 ptlrpc_close_replay_seq(req);
 921
 922         if (rc && rc != -EAGAIN && req->rq_commit_cb)
 923                 req->rq_commit_cb(req);
 924
 925         ptlrpc_req_finished(req);
 926         RETURN(rc);
 927 }
 928
 929 #ifdef HAVE_SPLIT_SUPPORT
 930 int mdc_sendpage(struct obd_export *exp, const struct lu_fid *fid,
 931                  const struct page *page, int offset)
 932 {
 933         struct ptlrpc_request   *req;
 934         struct ptlrpc_bulk_desc *desc;
 935         int                      rc;
 936         ENTRY;
 937
 938         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_WRITEPAGE);
 939         if (req == NULL)
 940                 RETURN(-ENOMEM);
 941
 942         /* FIXME: capa doesn't support split yet */
 943         mdc_set_capa_size(req, &RMF_CAPA1, NULL);
 944
 945         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_WRITEPAGE);
 946         if (rc) {
 947                 ptlrpc_request_free(req);
 948                 RETURN(rc);
 949         }
 950
 951         req->rq_request_portal = MDS_READPAGE_PORTAL;
 952         ptlrpc_at_set_req_timeout(req);
 953
 954         desc = ptlrpc_prep_bulk_imp(req, 1, BULK_GET_SOURCE, MDS_BULK_PORTAL);
 955         if (desc == NULL)
 956                 GOTO(out, rc = -ENOMEM);
 957
 958         /* NB req now owns desc and will free it when it gets freed. */
 959         ptlrpc_prep_bulk_page(desc, (struct page *)page, 0, offset);
 960         mdc_readdir_pack(req, 0, offset, fid, NULL);
 961
 962         ptlrpc_request_set_replen(req);
 963         rc = ptlrpc_queue_wait(req);
 964         if (rc)
 965                 GOTO(out, rc);
 966
 967         rc = sptlrpc_cli_unwrap_bulk_write(req, req->rq_bulk);
 968 out:
 969         ptlrpc_req_finished(req);
 970         return rc;
 971 }
 972 EXPORT_SYMBOL(mdc_sendpage);
 973 #endif
 974
 975 int mdc_readpage(struct obd_export *exp, const struct lu_fid *fid,
 976                  struct obd_capa *oc, __u64 offset, struct page *page,
 977                  struct ptlrpc_request **request)
 978 {
 979         struct ptlrpc_request   *req;
 980         struct ptlrpc_bulk_desc *desc;
 981         int                      rc;
 982         ENTRY;
 983
 984         *request = NULL;
 985         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_READPAGE);
 986         if (req == NULL)
 987                 RETURN(-ENOMEM);
 988
 989         mdc_set_capa_size(req, &RMF_CAPA1, oc);
 990
 991         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_READPAGE);
 992         if (rc) {
 993                 ptlrpc_request_free(req);
 994                 RETURN(rc);
 995         }
 996
 997         req->rq_request_portal = MDS_READPAGE_PORTAL;
 998         ptlrpc_at_set_req_timeout(req);
 999
1000         desc = ptlrpc_prep_bulk_imp(req, 1, BULK_PUT_SINK, MDS_BULK_PORTAL);
1001         if (desc == NULL) {
1002                 ptlrpc_request_free(req);
1003                 RETURN(-ENOMEM);
1004         }
1005
1006         /* NB req now owns desc and will free it when it gets freed */
1007         ptlrpc_prep_bulk_page(desc, page, 0, CFS_PAGE_SIZE);
1008         mdc_readdir_pack(req, offset, CFS_PAGE_SIZE, fid, oc);
1009
1010         ptlrpc_request_set_replen(req);
1011         rc = ptlrpc_queue_wait(req);
1012         if (rc) {
1013                 ptlrpc_req_finished(req);
1014                 RETURN(rc);
1015         }
1016
1017         rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
1018                                           req->rq_bulk->bd_nob_transferred);
1019         if (rc < 0) {
1020                 ptlrpc_req_finished(req);
1021                 RETURN(rc);
1022         }
1023
1024         if (req->rq_bulk->bd_nob_transferred != CFS_PAGE_SIZE) {
1025                 CERROR("Unexpected # bytes transferred: %d (%ld expected)\n",
1026                         req->rq_bulk->bd_nob_transferred, CFS_PAGE_SIZE);
1027                 ptlrpc_req_finished(req);
1028                 RETURN(-EPROTO);
1029         }
1030
1031         *request = req;
1032         RETURN(0);
1033 }
1034
1035 static int mdc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1036                          void *karg, void *uarg)
1037 {
1038         struct obd_device *obd = exp->exp_obd;
1039         struct obd_ioctl_data *data = karg;
1040         struct obd_import *imp = obd->u.cli.cl_import;
1041         struct llog_ctxt *ctxt;
1042         int rc;
1043         ENTRY;
1044
1045         if (!try_module_get(THIS_MODULE)) {
1046                 CERROR("Can't get module. Is it alive?");
1047                 return -EINVAL;
1048         }
1049         switch (cmd) {
1050         case OBD_IOC_CHANGELOG_CLEAR: {
1051                 struct changelog_setinfo cs =
1052                         {data->ioc_u64_1, data->ioc_u32_1};
1053                 rc = obd_set_info_async(exp, strlen(KEY_CHANGELOG_CLEAR),
1054                                         KEY_CHANGELOG_CLEAR, sizeof(cs), &cs,
1055                                         NULL);
1056                 GOTO(out, rc);
1057         }
1058         case OBD_IOC_CLIENT_RECOVER:
1059                 rc = ptlrpc_recover_import(imp, data->ioc_inlbuf1);
1060                 if (rc < 0)
1061                         GOTO(out, rc);
1062                 GOTO(out, rc = 0);
1063         case IOC_OSC_SET_ACTIVE:
1064                 rc = ptlrpc_set_import_active(imp, data->ioc_offset);
1065                 GOTO(out, rc);
1066         case OBD_IOC_PARSE: {
1067                 ctxt = llog_get_context(exp->exp_obd, LLOG_CONFIG_REPL_CTXT);
1068                 rc = class_config_parse_llog(ctxt, data->ioc_inlbuf1, NULL);
1069                 llog_ctxt_put(ctxt);
1070                 GOTO(out, rc);
1071         }
1072 #ifdef __KERNEL__
1073         case OBD_IOC_LLOG_INFO:
1074         case OBD_IOC_LLOG_PRINT: {
1075                 ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
1076                 rc = llog_ioctl(ctxt, cmd, data);
1077                 llog_ctxt_put(ctxt);
1078                 GOTO(out, rc);
1079         }
1080 #endif
1081         case OBD_IOC_POLL_QUOTACHECK:
1082                 rc = lquota_poll_check(quota_interface, exp,
1083                                        (struct if_quotacheck *)karg);
1084                 GOTO(out, rc);
1085         case OBD_IOC_PING_TARGET:
1086                 rc = ptlrpc_obd_ping(obd);
1087                 GOTO(out, rc);
1088         default:
1089                 CERROR("mdc_ioctl(): unrecognised ioctl %#x\n", cmd);
1090                 GOTO(out, rc = -ENOTTY);
1091         }
1092 out:
1093         module_put(THIS_MODULE);
1094
1095         return rc;
1096 }
1097
1098 static int do_set_info_async(struct obd_export *exp,
1099                              obd_count keylen, void *key,
1100                              obd_count vallen, void *val,
1101                              struct ptlrpc_request_set *set)
1102 {
1103         struct obd_import     *imp = class_exp2cliimp(exp);
1104         struct ptlrpc_request *req;
1105         char                  *tmp;
1106         int                    rc;
1107         ENTRY;
1108
1109         req = ptlrpc_request_alloc(imp, &RQF_MDS_SET_INFO);
1110         if (req == NULL)
1111                 RETURN(-ENOMEM);
1112
1113         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
1114                              RCL_CLIENT, keylen);
1115         req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
1116                              RCL_CLIENT, vallen);
1117         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SET_INFO);
1118         if (rc) {
1119                 ptlrpc_request_free(req);
1120                 RETURN(rc);
1121         }
1122
1123         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1124         memcpy(tmp, key, keylen);
1125         tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_VAL);
1126         memcpy(tmp, val, vallen);
1127
1128         ptlrpc_request_set_replen(req);
1129
1130         if (set) {
1131                 ptlrpc_set_add_req(set, req);
1132                 ptlrpc_check_set(NULL, set);
1133         } else {
1134                 rc = ptlrpc_queue_wait(req);
1135                 ptlrpc_req_finished(req);
1136         }
1137
1138         RETURN(rc);
1139 }
1140
1141 int mdc_set_info_async(struct obd_export *exp,
1142                        obd_count keylen, void *key,
1143                        obd_count vallen, void *val,
1144                        struct ptlrpc_request_set *set)
1145 {
1146         struct obd_import *imp = class_exp2cliimp(exp);
1147         int                rc = -EINVAL;
1148         ENTRY;
1149
1150         if (KEY_IS(KEY_INIT_RECOV)) {
1151                 if (vallen != sizeof(int))
1152                         RETURN(-EINVAL);
1153                 spin_lock(&imp->imp_lock);
1154                 imp->imp_initial_recov = *(int *)val;
1155                 spin_unlock(&imp->imp_lock);
1156                 CDEBUG(D_HA, "%s: set imp_initial_recov = %d\n",
1157                        exp->exp_obd->obd_name, imp->imp_initial_recov);
1158                 RETURN(0);
1159         }
1160         /* Turn off initial_recov after we try all backup servers once */
1161         if (KEY_IS(KEY_INIT_RECOV_BACKUP)) {
1162                 if (vallen != sizeof(int))
1163                         RETURN(-EINVAL);
1164                 spin_lock(&imp->imp_lock);
1165                 imp->imp_initial_recov_bk = *(int *)val;
1166                 if (imp->imp_initial_recov_bk)
1167                         imp->imp_initial_recov = 1;
1168                 spin_unlock(&imp->imp_lock);
1169                 CDEBUG(D_HA, "%s: set imp_initial_recov_bk = %d\n",
1170                        exp->exp_obd->obd_name, imp->imp_initial_recov_bk);
1171                 RETURN(0);
1172         }
1173         if (KEY_IS(KEY_READ_ONLY)) {
1174                 if (vallen != sizeof(int))
1175                         RETURN(-EINVAL);
1176
1177                 spin_lock(&imp->imp_lock);
1178                 if (*((int *)val)) {
1179                         imp->imp_connect_flags_orig |= OBD_CONNECT_RDONLY;
1180                         imp->imp_connect_data.ocd_connect_flags |= OBD_CONNECT_RDONLY;
1181                 } else {
1182                         imp->imp_connect_flags_orig &= ~OBD_CONNECT_RDONLY;
1183                         imp->imp_connect_data.ocd_connect_flags &= ~OBD_CONNECT_RDONLY;
1184                 }
1185                 spin_unlock(&imp->imp_lock);
1186
1187                 rc = do_set_info_async(exp, keylen, key, vallen, val, set);
1188                 RETURN(rc);
1189         }
1190         if (KEY_IS(KEY_SPTLRPC_CONF)) {
1191                 sptlrpc_conf_client_adapt(exp->exp_obd);
1192                 RETURN(0);
1193         }
1194         if (KEY_IS(KEY_FLUSH_CTX)) {
1195                 sptlrpc_import_flush_my_ctx(imp);
1196                 RETURN(0);
1197         }
1198         if (KEY_IS(KEY_MDS_CONN)) {
1199                 struct obd_import *imp = class_exp2cliimp(exp);
1200
1201                 /* mds-mds import */
1202                 spin_lock(&imp->imp_lock);
1203                 imp->imp_server_timeout = 1;
1204                 spin_unlock(&imp->imp_lock);
1205                 imp->imp_client->cli_request_portal = MDS_MDS_PORTAL;
1206                 CDEBUG(D_OTHER, "%s: timeout / 2\n", exp->exp_obd->obd_name);
1207                 RETURN(0);
1208         }
1209         if (KEY_IS(KEY_CHANGELOG_CLEAR)) {
1210                 rc = do_set_info_async(exp, keylen, key, vallen, val, set);
1211                 RETURN(rc);
1212         }
1213
1214         RETURN(rc);
1215 }
1216
1217 int mdc_get_info(struct obd_export *exp, __u32 keylen, void *key,
1218                  __u32 *vallen, void *val, struct lov_stripe_md *lsm)
1219 {
1220         int rc = -EINVAL;
1221
1222         if (KEY_IS(KEY_MAX_EASIZE)) {
1223                 int mdsize, *max_easize;
1224
1225                 if (*vallen != sizeof(int))
1226                         RETURN(-EINVAL);
1227                 mdsize = *(int*)val;
1228                 if (mdsize > exp->exp_obd->u.cli.cl_max_mds_easize)
1229                         exp->exp_obd->u.cli.cl_max_mds_easize = mdsize;
1230                 max_easize = val;
1231                 *max_easize = exp->exp_obd->u.cli.cl_max_mds_easize;
1232                 RETURN(0);
1233         }
1234         if (KEY_IS(KEY_CONN_DATA)) {
1235                 struct obd_import *imp = class_exp2cliimp(exp);
1236                 struct obd_connect_data *data = val;
1237
1238                 if (*vallen != sizeof(*data))
1239                         RETURN(-EINVAL);
1240
1241                 *data = imp->imp_connect_data;
1242                 RETURN(0);
1243         }
1244
1245         RETURN(rc);
1246 }
1247
1248 static int mdc_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1249                       __u64 max_age, __u32 flags)
1250 {
1251         struct ptlrpc_request *req;
1252         struct obd_statfs     *msfs;
1253         struct obd_import     *imp = NULL;
1254         int                    rc;
1255         ENTRY;
1256
1257
1258         /*Since the request might also come from lprocfs, so we need
1259          *sync this with client_disconnect_export Bug15684*/
1260         down_read(&obd->u.cli.cl_sem);
1261         if (obd->u.cli.cl_import)
1262                 imp = class_import_get(obd->u.cli.cl_import);
1263         up_read(&obd->u.cli.cl_sem);
1264         if (!imp)
1265                 RETURN(-ENODEV);
1266
1267         req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_STATFS,
1268                                         LUSTRE_MDS_VERSION, MDS_STATFS);
1269         if (req == NULL)
1270                 GOTO(output, rc = -ENOMEM);
1271
1272         ptlrpc_request_set_replen(req);
1273
1274         if (flags & OBD_STATFS_NODELAY) {
1275                 /* procfs requests not want stay in wait for avoid deadlock */
1276                 req->rq_no_resend = 1;
1277                 req->rq_no_delay = 1;
1278         }
1279
1280         rc = ptlrpc_queue_wait(req);
1281         if (rc) {
1282                 /* check connection error first */
1283                 if (imp->imp_connect_error)
1284                         rc = imp->imp_connect_error;
1285                 GOTO(out, rc);
1286         }
1287
1288         msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
1289         if (msfs == NULL)
1290                 GOTO(out, rc = -EPROTO);
1291
1292         *osfs = *msfs;
1293         EXIT;
1294 out:
1295         ptlrpc_req_finished(req);
1296 output:
1297         class_import_put(imp);
1298         return rc;
1299 }
1300
1301 static int mdc_pin(struct obd_export *exp, const struct lu_fid *fid,
1302                    struct obd_capa *oc, struct obd_client_handle *handle,
1303                    int flags)
1304 {
1305         struct ptlrpc_request *req;
1306         struct mdt_body       *body;
1307         int                    rc;
1308         ENTRY;
1309
1310         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_PIN);
1311         if (req == NULL)
1312                 RETURN(-ENOMEM);
1313
1314         mdc_set_capa_size(req, &RMF_CAPA1, oc);
1315
1316         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_PIN);
1317         if (rc) {
1318                 ptlrpc_request_free(req);
1319                 RETURN(rc);
1320         }
1321
1322         mdc_pack_body(req, fid, oc, 0, 0, -1, flags);
1323
1324         ptlrpc_request_set_replen(req);
1325
1326         mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
1327         rc = ptlrpc_queue_wait(req);
1328         mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
1329         if (rc) {
1330                 CERROR("Pin failed: %d\n", rc);
1331                 GOTO(err_out, rc);
1332         }
1333
1334         body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1335         if (body == NULL)
1336                 GOTO(err_out, rc = -EPROTO);
1337
1338         handle->och_fh = body->handle;
1339         handle->och_magic = OBD_CLIENT_HANDLE_MAGIC;
1340
1341         OBD_ALLOC_PTR(handle->och_mod);
1342         if (handle->och_mod == NULL) {
1343                 DEBUG_REQ(D_ERROR, req, "can't allocate mdc_open_data");
1344                 GOTO(err_out, rc = -ENOMEM);
1345         }
1346         /* will be dropped by unpin */
1347         CFS_INIT_LIST_HEAD(&handle->och_mod->mod_replay_list);
1348         list_add_tail(&req->rq_mod_list, &handle->och_mod->mod_replay_list);
1349
1350         RETURN(0);
1351
1352 err_out:
1353         ptlrpc_req_finished(req);
1354         RETURN(rc);
1355 }
1356
1357 static int mdc_unpin(struct obd_export *exp, struct obd_client_handle *handle,
1358                      int flag)
1359 {
1360         struct ptlrpc_request *req;
1361         struct mdt_body       *body;
1362         int                    rc;
1363         ENTRY;
1364
1365         req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_UNPIN,
1366                                         LUSTRE_MDS_VERSION, MDS_UNPIN);
1367         if (req == NULL)
1368                 RETURN(-ENOMEM);
1369
1370         body = req_capsule_client_get(&req->rq_pill, &RMF_MDT_BODY);
1371         body->handle = handle->och_fh;
1372         body->flags = flag;
1373
1374         ptlrpc_request_set_replen(req);
1375
1376         mdc_get_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
1377         rc = ptlrpc_queue_wait(req);
1378         mdc_put_rpc_lock(exp->exp_obd->u.cli.cl_rpc_lock, NULL);
1379
1380         if (rc != 0)
1381                 CERROR("Unpin failed: %d\n", rc);
1382
1383         ptlrpc_req_finished(req);
1384
1385         LASSERT(!list_empty(&handle->och_mod->mod_replay_list));
1386         req = list_entry(handle->och_mod->mod_replay_list.next,
1387                          typeof(*req), rq_mod_list);
1388         list_del_init(&req->rq_mod_list);
1389         ptlrpc_req_finished(req);
1390         LASSERT(list_empty(&handle->och_mod->mod_replay_list));
1391
1392         OBD_FREE(handle->och_mod, sizeof(*handle->och_mod));
1393         RETURN(rc);
1394 }
1395
1396 int mdc_sync(struct obd_export *exp, const struct lu_fid *fid,
1397              struct obd_capa *oc, struct ptlrpc_request **request)
1398 {
1399         struct ptlrpc_request *req;
1400         int                    rc;
1401         ENTRY;
1402
1403         *request = NULL;
1404         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_SYNC);
1405         if (req == NULL)
1406                 RETURN(-ENOMEM);
1407
1408         mdc_set_capa_size(req, &RMF_CAPA1, oc);
1409
1410         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_SYNC);
1411         if (rc) {
1412                 ptlrpc_request_free(req);
1413                 RETURN(rc);
1414         }
1415
1416         mdc_pack_body(req, fid, oc, 0, 0, -1, 0);
1417
1418         ptlrpc_request_set_replen(req);
1419
1420         rc = ptlrpc_queue_wait(req);
1421         if (rc)
1422                 ptlrpc_req_finished(req);
1423         else
1424                 *request = req;
1425         RETURN(rc);
1426 }
1427
1428 static int mdc_import_event(struct obd_device *obd, struct obd_import *imp,
1429                             enum obd_import_event event)
1430 {
1431         int rc = 0;
1432
1433         LASSERT(imp->imp_obd == obd);
1434
1435         switch (event) {
1436         case IMP_EVENT_DISCON: {
1437 #if 0
1438                 /* XXX Pass event up to OBDs stack. used only for FLD now */
1439                 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DISCON, NULL);
1440 #endif
1441                 break;
1442         }
1443         case IMP_EVENT_INACTIVE: {
1444                 struct client_obd *cli = &obd->u.cli;
1445                 /*
1446                  * Flush current sequence to make client obtain new one
1447                  * from server in case of disconnect/reconnect.
1448                  * If range is already empty then no need to flush it.
1449                  */
1450                 if (cli->cl_seq != NULL &&
1451                     !range_is_exhausted(&cli->cl_seq->lcs_space)) {
1452                         seq_client_flush(cli->cl_seq);
1453                 }
1454
1455                 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
1456                 break;
1457         }
1458         case IMP_EVENT_INVALIDATE: {
1459                 struct ldlm_namespace *ns = obd->obd_namespace;
1460
1461                 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
1462
1463                 break;
1464         }
1465         case IMP_EVENT_ACTIVE: {
1466                 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
1467                 break;
1468         }
1469         case IMP_EVENT_OCD:
1470                 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
1471                 break;
1472
1473         default:
1474                 CERROR("Unknown import event %x\n", event);
1475                 LBUG();
1476         }
1477         RETURN(rc);
1478 }
1479
1480 static int mdc_fid_init(struct obd_export *exp)
1481 {
1482         struct client_obd *cli = &exp->exp_obd->u.cli;
1483         char *prefix;
1484         int rc;
1485         ENTRY;
1486
1487         OBD_ALLOC_PTR(cli->cl_seq);
1488         if (cli->cl_seq == NULL)
1489                 RETURN(-ENOMEM);
1490
1491         OBD_ALLOC(prefix, MAX_OBD_NAME + 5);
1492         if (prefix == NULL)
1493                 GOTO(out_free_seq, rc = -ENOMEM);
1494
1495         snprintf(prefix, MAX_OBD_NAME + 5, "srv-%s",
1496                  exp->exp_obd->obd_name);
1497
1498         /* Init client side sequence-manager */
1499         rc = seq_client_init(cli->cl_seq, exp,
1500                              LUSTRE_SEQ_METADATA,
1501                              prefix, NULL);
1502         OBD_FREE(prefix, MAX_OBD_NAME + 5);
1503         if (rc)
1504                 GOTO(out_free_seq, rc);
1505
1506         RETURN(rc);
1507 out_free_seq:
1508         OBD_FREE_PTR(cli->cl_seq);
1509         cli->cl_seq = NULL;
1510         return rc;
1511 }
1512
1513 static int mdc_fid_fini(struct obd_export *exp)
1514 {
1515         struct client_obd *cli = &exp->exp_obd->u.cli;
1516         ENTRY;
1517
1518         if (cli->cl_seq != NULL) {
1519                 seq_client_fini(cli->cl_seq);
1520                 OBD_FREE_PTR(cli->cl_seq);
1521                 cli->cl_seq = NULL;
1522         }
1523
1524         RETURN(0);
1525 }
1526
1527 int mdc_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
1528                   struct md_op_data *op_data)
1529 {
1530         struct client_obd *cli = &exp->exp_obd->u.cli;
1531         struct lu_client_seq *seq = cli->cl_seq;
1532         ENTRY;
1533         RETURN(seq_client_alloc_fid(seq, fid));
1534 }
1535
1536 /* XXX This method is used only to clear current fid seq
1537  * once fld/mds insert failed */
1538 static int mdc_fid_delete(struct obd_export *exp, const struct lu_fid *fid)
1539 {
1540         struct client_obd *cli = &exp->exp_obd->u.cli;
1541
1542         seq_client_flush(cli->cl_seq);
1543         return 0;
1544 }
1545
1546 struct obd_uuid *mdc_get_uuid(struct obd_export *exp) {
1547         struct client_obd *cli = &exp->exp_obd->u.cli;
1548         return &cli->cl_target_uuid;
1549 }
1550
1551 static int mdc_setup(struct obd_device *obd, struct lustre_cfg *cfg)
1552 {
1553         struct client_obd *cli = &obd->u.cli;
1554         struct lprocfs_static_vars lvars = { 0 };
1555         int rc;
1556         ENTRY;
1557
1558         OBD_ALLOC(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
1559         if (!cli->cl_rpc_lock)
1560                 RETURN(-ENOMEM);
1561         mdc_init_rpc_lock(cli->cl_rpc_lock);
1562
1563         ptlrpcd_addref();
1564
1565         OBD_ALLOC(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock));
1566         if (!cli->cl_setattr_lock)
1567                 GOTO(err_rpc_lock, rc = -ENOMEM);
1568         mdc_init_rpc_lock(cli->cl_setattr_lock);
1569
1570         OBD_ALLOC(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
1571         if (!cli->cl_close_lock)
1572                 GOTO(err_setattr_lock, rc = -ENOMEM);
1573         mdc_init_rpc_lock(cli->cl_close_lock);
1574
1575         rc = client_obd_setup(obd, cfg);
1576         if (rc)
1577                 GOTO(err_close_lock, rc);
1578         lprocfs_mdc_init_vars(&lvars);
1579         lprocfs_obd_setup(obd, lvars.obd_vars);
1580         sptlrpc_lprocfs_cliobd_attach(obd);
1581         ptlrpc_lprocfs_register_obd(obd);
1582
1583         rc = obd_llog_init(obd, &obd->obd_olg, obd, 0, NULL, NULL);
1584         if (rc) {
1585                 mdc_cleanup(obd);
1586                 CERROR("failed to setup llogging subsystems\n");
1587         }
1588
1589         RETURN(rc);
1590
1591 err_close_lock:
1592         OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
1593 err_setattr_lock:
1594         OBD_FREE(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock));
1595 err_rpc_lock:
1596         OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
1597         ptlrpcd_decref();
1598         RETURN(rc);
1599 }
1600
1601 /* Initialize the default and maximum LOV EA and cookie sizes.  This allows
1602  * us to make MDS RPCs with large enough reply buffers to hold the
1603  * maximum-sized (= maximum striped) EA and cookie without having to
1604  * calculate this (via a call into the LOV + OSCs) each time we make an RPC. */
1605 static int mdc_init_ea_size(struct obd_export *exp, int easize,
1606                      int def_easize, int cookiesize)
1607 {
1608         struct obd_device *obd = exp->exp_obd;
1609         struct client_obd *cli = &obd->u.cli;
1610         ENTRY;
1611
1612         if (cli->cl_max_mds_easize < easize)
1613                 cli->cl_max_mds_easize = easize;
1614
1615         if (cli->cl_default_mds_easize < def_easize)
1616                 cli->cl_default_mds_easize = def_easize;
1617
1618         if (cli->cl_max_mds_cookiesize < cookiesize)
1619                 cli->cl_max_mds_cookiesize = cookiesize;
1620
1621         RETURN(0);
1622 }
1623
1624 static int mdc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
1625 {
1626         int rc = 0;
1627         ENTRY;
1628
1629         switch (stage) {
1630         case OBD_CLEANUP_EARLY:
1631         case OBD_CLEANUP_EXPORTS:
1632                 /* If we set up but never connected, the
1633                    client import will not have been cleaned. */
1634                 if (obd->u.cli.cl_import) {
1635                         struct obd_import *imp;
1636                         down_write(&obd->u.cli.cl_sem);
1637                         imp = obd->u.cli.cl_import;
1638                         CERROR("client import never connected\n");
1639                         ptlrpc_invalidate_import(imp);
1640                         class_destroy_import(imp);
1641                         up_write(&obd->u.cli.cl_sem);
1642                         obd->u.cli.cl_import = NULL;
1643                 }
1644                 rc = obd_llog_finish(obd, 0);
1645                 if (rc != 0)
1646                         CERROR("failed to cleanup llogging subsystems\n");
1647                 break;
1648         }
1649         RETURN(rc);
1650 }
1651
1652 static int mdc_cleanup(struct obd_device *obd)
1653 {
1654         struct client_obd *cli = &obd->u.cli;
1655
1656         OBD_FREE(cli->cl_rpc_lock, sizeof (*cli->cl_rpc_lock));
1657         OBD_FREE(cli->cl_setattr_lock, sizeof (*cli->cl_setattr_lock));
1658         OBD_FREE(cli->cl_close_lock, sizeof (*cli->cl_close_lock));
1659
1660         ptlrpc_lprocfs_unregister_obd(obd);
1661         lprocfs_obd_cleanup(obd);
1662         ptlrpcd_decref();
1663
1664         return client_obd_cleanup(obd);
1665 }
1666
1667
1668 static int mdc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
1669                          struct obd_device *tgt, int count,
1670                          struct llog_catid *logid, struct obd_uuid *uuid)
1671 {
1672         struct llog_ctxt *ctxt;
1673         int rc;
1674         ENTRY;
1675
1676         LASSERT(olg == &obd->obd_olg);
1677
1678         rc = llog_setup(obd, olg, LLOG_LOVEA_REPL_CTXT, tgt, 0, NULL,
1679                         &llog_client_ops);
1680         if (rc)
1681                 RETURN(rc);
1682         ctxt = llog_get_context(obd, LLOG_LOVEA_REPL_CTXT);
1683         llog_initiator_connect(ctxt);
1684         llog_ctxt_put(ctxt);
1685
1686         rc = llog_setup(obd, olg, LLOG_CHANGELOG_REPL_CTXT, tgt, 0, NULL,
1687                         &llog_client_ops);
1688         if (rc == 0) {
1689                 ctxt = llog_group_get_ctxt(olg, LLOG_CHANGELOG_REPL_CTXT);
1690                 llog_initiator_connect(ctxt);
1691                 llog_ctxt_put(ctxt);
1692         }
1693
1694         RETURN(rc);
1695 }
1696
1697 static int mdc_llog_finish(struct obd_device *obd, int count)
1698 {
1699         struct llog_ctxt *ctxt;
1700         int rc = 0;
1701         ENTRY;
1702
1703         ctxt = llog_get_context(obd, LLOG_LOVEA_REPL_CTXT);
1704         if (ctxt)
1705                 rc = llog_cleanup(ctxt);
1706
1707         ctxt = llog_get_context(obd, LLOG_CHANGELOG_REPL_CTXT);
1708         if (ctxt)
1709                 rc = llog_cleanup(ctxt);
1710
1711         RETURN(rc);
1712 }
1713
1714 static int mdc_process_config(struct obd_device *obd, obd_count len, void *buf)
1715 {
1716         struct lustre_cfg *lcfg = buf;
1717         struct lprocfs_static_vars lvars = { 0 };
1718         int rc = 0;
1719
1720         lprocfs_mdc_init_vars(&lvars);
1721         switch (lcfg->lcfg_command) {
1722         default:
1723                 rc = class_process_proc_param(PARAM_MDC, lvars.obd_vars,
1724                                               lcfg, obd);
1725                 if (rc > 0)
1726                         rc = 0;
1727                 break;
1728         }
1729         return(rc);
1730 }
1731
1732
1733 /* get remote permission for current user on fid */
1734 int mdc_get_remote_perm(struct obd_export *exp, const struct lu_fid *fid,
1735                         struct obd_capa *oc, __u32 suppgid,
1736                         struct ptlrpc_request **request)
1737 {
1738         struct ptlrpc_request  *req;
1739         int                    rc;
1740         ENTRY;
1741
1742         LASSERT(client_is_remote(exp));
1743
1744         *request = NULL;
1745         req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_MDS_GETATTR);
1746         if (req == NULL)
1747                 RETURN(-ENOMEM);
1748
1749         mdc_set_capa_size(req, &RMF_CAPA1, oc);
1750
1751         rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, MDS_GETATTR);
1752         if (rc) {
1753                 ptlrpc_request_free(req);
1754                 RETURN(rc);
1755         }
1756
1757         mdc_pack_body(req, fid, oc, OBD_MD_FLRMTPERM, 0, suppgid, 0);
1758
1759         req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER,
1760                              sizeof(struct mdt_remote_perm));
1761
1762         ptlrpc_request_set_replen(req);
1763
1764         rc = ptlrpc_queue_wait(req);
1765         if (rc)
1766                 ptlrpc_req_finished(req);
1767         else
1768                 *request = req;
1769         RETURN(rc);
1770 }
1771
1772 static int mdc_interpret_renew_capa(const struct lu_env *env,
1773                                     struct ptlrpc_request *req, void *unused,
1774                                     int status)
1775 {
1776         struct obd_capa *oc = req->rq_async_args.pointer_arg[0];
1777         renew_capa_cb_t cb = req->rq_async_args.pointer_arg[1];
1778         struct mdt_body *body = NULL;
1779         struct lustre_capa *capa;
1780         ENTRY;
1781
1782         if (status)
1783                 GOTO(out, capa = ERR_PTR(status));
1784
1785         body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1786         if (body == NULL)
1787                 GOTO(out, capa = ERR_PTR(-EFAULT));
1788
1789         if ((body->valid & OBD_MD_FLOSSCAPA) == 0)
1790                 GOTO(out, capa = ERR_PTR(-ENOENT));
1791
1792         capa = req_capsule_server_get(&req->rq_pill, &RMF_CAPA2);
1793         if (!capa)
1794                 GOTO(out, capa = ERR_PTR(-EFAULT));
1795         EXIT;
1796 out:
1797         cb(oc, capa);
1798         return 0;
1799 }
1800
1801 static int mdc_renew_capa(struct obd_export *exp, struct obd_capa *oc,
1802                           renew_capa_cb_t cb)
1803 {
1804         struct ptlrpc_request *req;
1805         ENTRY;
1806
1807         req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp), &RQF_MDS_GETATTR,
1808                                         LUSTRE_MDS_VERSION, MDS_GETATTR);
1809         if (req == NULL)
1810                 RETURN(-ENOMEM);
1811
1812         /* NB, OBD_MD_FLOSSCAPA is set here, but it doesn't necessarily mean the
1813          * capa to renew is oss capa.
1814          */
1815         mdc_pack_body(req, &oc->c_capa.lc_fid, oc, OBD_MD_FLOSSCAPA, 0, -1, 0);
1816         ptlrpc_request_set_replen(req);
1817
1818         req->rq_async_args.pointer_arg[0] = oc;
1819         req->rq_async_args.pointer_arg[1] = cb;
1820         req->rq_interpret_reply = mdc_interpret_renew_capa;
1821         ptlrpcd_add_req(req, PSCOPE_OTHER);
1822         RETURN(0);
1823 }
1824
1825 static int mdc_connect(const struct lu_env *env,
1826                        struct obd_export **exp,
1827                        struct obd_device *obd, struct obd_uuid *cluuid,
1828                        struct obd_connect_data *data,
1829                        void *localdata)
1830 {
1831         struct obd_import *imp = obd->u.cli.cl_import;
1832
1833         /* mds-mds import features */
1834         if (data && (data->ocd_connect_flags & OBD_CONNECT_MDS_MDS)) {
1835                 spin_lock(&imp->imp_lock);
1836                 imp->imp_server_timeout = 1;
1837                 spin_unlock(&imp->imp_lock);
1838                 imp->imp_client->cli_request_portal = MDS_MDS_PORTAL;
1839                 CDEBUG(D_OTHER, "%s: Set 'mds' portal and timeout\n",
1840                        obd->obd_name);
1841         }
1842
1843         return client_connect_import(env, exp, obd, cluuid, data, NULL);
1844 }
1845
1846 struct obd_ops mdc_obd_ops = {
1847         .o_owner            = THIS_MODULE,
1848         .o_setup            = mdc_setup,
1849         .o_precleanup       = mdc_precleanup,
1850         .o_cleanup          = mdc_cleanup,
1851         .o_add_conn         = client_import_add_conn,
1852         .o_del_conn         = client_import_del_conn,
1853         .o_connect          = mdc_connect,
1854         .o_disconnect       = client_disconnect_export,
1855         .o_iocontrol        = mdc_iocontrol,
1856         .o_set_info_async   = mdc_set_info_async,
1857         .o_statfs           = mdc_statfs,
1858         .o_pin              = mdc_pin,
1859         .o_unpin            = mdc_unpin,
1860         .o_fid_init         = mdc_fid_init,
1861         .o_fid_fini         = mdc_fid_fini,
1862         .o_fid_alloc        = mdc_fid_alloc,
1863         .o_fid_delete       = mdc_fid_delete,
1864         .o_import_event     = mdc_import_event,
1865         .o_llog_init        = mdc_llog_init,
1866         .o_llog_finish      = mdc_llog_finish,
1867         .o_get_info         = mdc_get_info,
1868         .o_process_config   = mdc_process_config,
1869         .o_get_uuid         = mdc_get_uuid,
1870 };
1871
1872 struct md_ops mdc_md_ops = {
1873         .m_getstatus        = mdc_getstatus,
1874         .m_change_cbdata    = mdc_change_cbdata,
1875         .m_close            = mdc_close,
1876         .m_create           = mdc_create,
1877         .m_done_writing     = mdc_done_writing,
1878         .m_enqueue          = mdc_enqueue,
1879         .m_getattr          = mdc_getattr,
1880         .m_getattr_name     = mdc_getattr_name,
1881         .m_intent_lock      = mdc_intent_lock,
1882         .m_link             = mdc_link,
1883         .m_is_subdir        = mdc_is_subdir,
1884         .m_rename           = mdc_rename,
1885         .m_setattr          = mdc_setattr,
1886         .m_setxattr         = mdc_setxattr,
1887         .m_getxattr         = mdc_getxattr,
1888         .m_sync             = mdc_sync,
1889         .m_readpage         = mdc_readpage,
1890         .m_unlink           = mdc_unlink,
1891         .m_cancel_unused    = mdc_cancel_unused,
1892         .m_init_ea_size     = mdc_init_ea_size,
1893         .m_set_lock_data    = mdc_set_lock_data,
1894         .m_lock_match       = mdc_lock_match,
1895         .m_get_lustre_md    = mdc_get_lustre_md,
1896         .m_free_lustre_md   = mdc_free_lustre_md,
1897         .m_set_open_replay_data = mdc_set_open_replay_data,
1898         .m_clear_open_replay_data = mdc_clear_open_replay_data,
1899         .m_renew_capa       = mdc_renew_capa,
1900         .m_unpack_capa      = mdc_unpack_capa,
1901         .m_get_remote_perm  = mdc_get_remote_perm,
1902         .m_intent_getattr_async = mdc_intent_getattr_async,
1903         .m_revalidate_lock      = mdc_revalidate_lock
1904 };
1905
1906 int __init mdc_init(void)
1907 {
1908         int rc;
1909         struct lprocfs_static_vars lvars = { 0 };
1910         lprocfs_mdc_init_vars(&lvars);
1911
1912         request_module("lquota");
1913         quota_interface = PORTAL_SYMBOL_GET(mdc_quota_interface);
1914         init_obd_quota_ops(quota_interface, &mdc_obd_ops);
1915
1916         rc = class_register_type(&mdc_obd_ops, &mdc_md_ops, lvars.module_vars,
1917                                  LUSTRE_MDC_NAME, NULL);
1918         if (rc && quota_interface)
1919                 PORTAL_SYMBOL_PUT(mdc_quota_interface);
1920
1921         RETURN(rc);
1922 }
1923
1924 #ifdef __KERNEL__
1925 static void /*__exit*/ mdc_exit(void)
1926 {
1927         if (quota_interface)
1928                 PORTAL_SYMBOL_PUT(mdc_quota_interface);
1929
1930         class_unregister_type(LUSTRE_MDC_NAME);
1931 }
1932
1933 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
1934 MODULE_DESCRIPTION("Lustre Metadata Client");
1935 MODULE_LICENSE("GPL");
1936
1937 module_init(mdc_init);
1938 module_exit(mdc_exit);
1939 #endif