lustre/mdt/mdt_lib.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  lustre/mdt/mdt_lib.c
   5  *  Lustre Metadata Target (mdt) request unpacking helper.
   6  *
   7  *  Copyright (c) 2006 Cluster File Systems, Inc.
   8  *   Author: Peter Braam <braam@clusterfs.com>
   9  *   Author: Andreas Dilger <adilger@clusterfs.com>
  10  *   Author: Phil Schwan <phil@clusterfs.com>
  11  *   Author: Mike Shaver <shaver@clusterfs.com>
  12  *   Author: Nikita Danilov <nikita@clusterfs.com>
  13  *   Author: Huang Hua <huanghua@clusterfs.com>
  14  *   Author: Fan Yong <fanyong@clusterfs.com>
  15  *
  16  *
  17  *   This file is part of the Lustre file system, http://www.lustre.org
  18  *   Lustre is a trademark of Cluster File Systems, Inc.
  19  *
  20  *   You may have signed or agreed to another license before downloading
  21  *   this software.  If so, you are bound by the terms and conditions
  22  *   of that agreement, and the following does not apply to you.  See the
  23  *   LICENSE file included with this distribution for more information.
  24  *
  25  *   If you did not agree to a different license, then this copy of Lustre
  26  *   is open source software; you can redistribute it and/or modify it
  27  *   under the terms of version 2 of the GNU General Public License as
  28  *   published by the Free Software Foundation.
  29  *
  30  *   In either case, Lustre is distributed in the hope that it will be
  31  *   useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  32  *   of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  33  *   license text for more details.
  34  */
  35
  36
  37 #ifndef EXPORT_SYMTAB
  38 # define EXPORT_SYMTAB
  39 #endif
  40 #define DEBUG_SUBSYSTEM S_MDS
  41
  42 #include "mdt_internal.h"
  43
  44
  45 typedef enum ucred_init_type {
  46         NONE_INIT       = 0,
  47         BODY_INIT       = 1,
  48         REC_INIT        = 2
  49 } ucred_init_type_t;
  50
  51 void mdt_exit_ucred(struct mdt_thread_info *info)
  52 {
  53         struct md_ucred   *uc  = mdt_ucred(info);
  54         struct mdt_device *mdt = info->mti_mdt;
  55
  56         if (uc->mu_valid != UCRED_INIT) {
  57                 uc->mu_suppgids[0] = uc->mu_suppgids[1] = -1;
  58                 if (uc->mu_ginfo) {
  59                         groups_free(uc->mu_ginfo);
  60                         uc->mu_ginfo = NULL;
  61                 }
  62                 if (uc->mu_identity) {
  63                         mdt_identity_put(mdt->mdt_identity_cache,
  64                                          uc->mu_identity);
  65                         uc->mu_identity = NULL;
  66                 }
  67                 uc->mu_valid = UCRED_INIT;
  68         }
  69 }
  70
  71 /* XXX: root_squash will be redesigned in Lustre 1.7.
  72  * Do not root_squash for inter-MDS operations */
  73 static int mdt_root_squash(struct mdt_thread_info *info)
  74 {
  75         return 0;
  76 }
  77
  78 static int new_init_ucred(struct mdt_thread_info *info, ucred_init_type_t type,
  79                           void *buf)
  80 {
  81         struct ptlrpc_request   *req = mdt_info_req(info);
  82         struct mdt_export_data  *med = mdt_req2med(req);
  83         struct mdt_device       *mdt = info->mti_mdt;
  84         struct ptlrpc_user_desc *pud = req->rq_user_desc;
  85         struct md_ucred         *ucred = mdt_ucred(info);
  86         lnet_nid_t               peernid = req->rq_peer.nid;
  87         __u32                    perm = 0;
  88         int                      setuid;
  89         int                      setgid;
  90         int                      rc = 0;
  91
  92         ENTRY;
  93
  94         LASSERT(req->rq_auth_gss);
  95         LASSERT(!req->rq_auth_usr_mdt);
  96         LASSERT(req->rq_user_desc);
  97
  98         ucred->mu_valid = UCRED_INVALID;
  99
 100         ucred->mu_o_uid   = pud->pud_uid;
 101         ucred->mu_o_gid   = pud->pud_gid;
 102         ucred->mu_o_fsuid = pud->pud_fsuid;
 103         ucred->mu_o_fsgid = pud->pud_fsgid;
 104
 105         if (type == BODY_INIT) {
 106                 struct mdt_body *body = (struct mdt_body *)buf;
 107
 108                 ucred->mu_suppgids[0] = body->suppgid;
 109                 ucred->mu_suppgids[1] = -1;
 110         }
 111
 112         /* sanity check: we expect the uid which client claimed is true */
 113         if (med->med_rmtclient) {
 114                 if (req->rq_auth_mapped_uid == INVALID_UID) {
 115                         CDEBUG(D_SEC, "remote user not mapped, deny access!\n");
 116                         RETURN(-EACCES);
 117                 }
 118
 119                 if (ptlrpc_user_desc_do_idmap(req, pud))
 120                         RETURN(-EACCES);
 121
 122                 if (req->rq_auth_mapped_uid != pud->pud_uid) {
 123                         CDEBUG(D_SEC, "remote client %s: auth/mapped uid %u/%u "
 124                                "while client claims %u:%u/%u:%u\n",
 125                                libcfs_nid2str(peernid), req->rq_auth_uid,
 126                                req->rq_auth_mapped_uid,
 127                                pud->pud_uid, pud->pud_gid,
 128                                pud->pud_fsuid, pud->pud_fsgid);
 129                         RETURN(-EACCES);
 130                 }
 131         } else {
 132                 if (req->rq_auth_uid != pud->pud_uid) {
 133                         CDEBUG(D_SEC, "local client %s: auth uid %u "
 134                                "while client claims %u:%u/%u:%u\n",
 135                                libcfs_nid2str(peernid), req->rq_auth_uid,
 136                                pud->pud_uid, pud->pud_gid,
 137                                pud->pud_fsuid, pud->pud_fsgid);
 138                         RETURN(-EACCES);
 139                 }
 140         }
 141
 142         if (is_identity_get_disabled(mdt->mdt_identity_cache)) {
 143                 if (med->med_rmtclient) {
 144                         CDEBUG(D_SEC, "remote client must run with identity_get "
 145                                "enabled!\n");
 146                         RETURN(-EACCES);
 147                 } else {
 148                         ucred->mu_identity = NULL;
 149                         perm = CFS_SETUID_PERM | CFS_SETGID_PERM |
 150                                CFS_SETGRP_PERM;
 151                 }
 152         } else {
 153                 struct md_identity *identity;
 154
 155                 identity = mdt_identity_get(mdt->mdt_identity_cache,
 156                                             pud->pud_uid);
 157                 if (IS_ERR(identity)) {
 158                         if (unlikely(PTR_ERR(identity) == -EREMCHG &&
 159                                      !med->med_rmtclient)) {
 160                                 ucred->mu_identity = NULL;
 161                                 perm = CFS_SETUID_PERM | CFS_SETGID_PERM |
 162                                        CFS_SETGRP_PERM;
 163                         } else {
 164                                 CDEBUG(D_SEC, "Deny access without identity: uid %u\n",
 165                                        pud->pud_uid);
 166                                 RETURN(-EACCES);
 167                         }
 168                 } else {
 169                         ucred->mu_identity = identity;
 170                         perm = mdt_identity_get_perm(ucred->mu_identity,
 171                                                      med->med_rmtclient,
 172                                                      peernid);
 173                 }
 174         }
 175
 176         /* find out the setuid/setgid attempt */
 177         setuid = (pud->pud_uid != pud->pud_fsuid);
 178         setgid = ((pud->pud_gid != pud->pud_fsgid) ||
 179                   (ucred->mu_identity &&
 180                   (pud->pud_gid != ucred->mu_identity->mi_gid)));
 181
 182         /* check permission of setuid */
 183         if (setuid && !(perm & CFS_SETUID_PERM)) {
 184                 CDEBUG(D_SEC, "mdt blocked setuid attempt (%u -> %u) from %s\n",
 185                        pud->pud_uid, pud->pud_fsuid, libcfs_nid2str(peernid));
 186                 GOTO(out, rc = -EACCES);
 187         }
 188
 189         /* check permission of setgid */
 190         if (setgid && !(perm & CFS_SETGID_PERM)) {
 191                 CDEBUG(D_SEC, "mdt blocked setgid attempt (%u:%u/%u:%u -> %u) "
 192                        "from %s\n", pud->pud_uid, pud->pud_gid,
 193                        pud->pud_fsuid, pud->pud_fsgid,
 194                        ucred->mu_identity->mi_gid, libcfs_nid2str(peernid));
 195                 GOTO(out, rc = -EACCES);
 196         }
 197
 198         /*
 199          * NB: remote client not allowed to setgroups anyway.
 200          */
 201         if (!med->med_rmtclient && perm & CFS_SETGRP_PERM) {
 202                 if (pud->pud_ngroups) {
 203                         /* setgroups for local client */
 204                         ucred->mu_ginfo = groups_alloc(pud->pud_ngroups);
 205                         if (!ucred->mu_ginfo) {
 206                                 CERROR("failed to alloc %d groups\n",
 207                                        pud->pud_ngroups);
 208                                 GOTO(out, rc = -ENOMEM);
 209                         }
 210
 211                         lustre_groups_from_list(ucred->mu_ginfo,
 212                                                 pud->pud_groups);
 213                         lustre_groups_sort(ucred->mu_ginfo);
 214                 } else {
 215                         ucred->mu_ginfo = NULL;
 216                 }
 217         } else {
 218                 ucred->mu_suppgids[0] = -1;
 219                 ucred->mu_suppgids[1] = -1;
 220                 ucred->mu_ginfo = NULL;
 221         }
 222
 223         ucred->mu_uid   = pud->pud_uid;
 224         ucred->mu_gid   = pud->pud_gid;
 225         ucred->mu_fsuid = pud->pud_fsuid;
 226         ucred->mu_fsgid = pud->pud_fsgid;
 227
 228         /* XXX: need to process root_squash here. */
 229         mdt_root_squash(info);
 230
 231         /* remove fs privilege for non-root user */
 232         if (ucred->mu_fsuid)
 233                 ucred->mu_cap = pud->pud_cap & ~CAP_FS_MASK;
 234         else
 235                 ucred->mu_cap = pud->pud_cap;
 236         ucred->mu_valid = UCRED_NEW;
 237
 238         EXIT;
 239
 240 out:
 241         if (rc) {
 242                 if (ucred->mu_ginfo) {
 243                         groups_free(ucred->mu_ginfo);
 244                         ucred->mu_ginfo = NULL;
 245                 }
 246                 if (ucred->mu_identity) {
 247                         mdt_identity_put(mdt->mdt_identity_cache,
 248                                          ucred->mu_identity);
 249                         ucred->mu_identity = NULL;
 250                 }
 251         }
 252
 253         return rc;
 254 }
 255
 256 int mdt_check_ucred(struct mdt_thread_info *info)
 257 {
 258         struct ptlrpc_request   *req = mdt_info_req(info);
 259         struct mdt_export_data  *med = mdt_req2med(req);
 260         struct mdt_device       *mdt = info->mti_mdt;
 261         struct ptlrpc_user_desc *pud = req->rq_user_desc;
 262         struct md_ucred         *ucred = mdt_ucred(info);
 263         struct md_identity      *identity = NULL;
 264         lnet_nid_t               peernid = req->rq_peer.nid;
 265         __u32                    perm = 0;
 266         int                      setuid;
 267         int                      setgid;
 268         int                      rc = 0;
 269
 270         ENTRY;
 271
 272         if ((ucred->mu_valid == UCRED_OLD) || (ucred->mu_valid == UCRED_NEW))
 273                 RETURN(0);
 274
 275         if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc)
 276                 RETURN(0);
 277
 278         /* sanity check: if we use strong authentication, we expect the
 279          * uid which client claimed is true */
 280         if (med->med_rmtclient) {
 281                 if (req->rq_auth_mapped_uid == INVALID_UID) {
 282                         CDEBUG(D_SEC, "remote user not mapped, deny access!\n");
 283                         RETURN(-EACCES);
 284                 }
 285
 286                 if (ptlrpc_user_desc_do_idmap(req, pud))
 287                         RETURN(-EACCES);
 288
 289                 if (req->rq_auth_mapped_uid != pud->pud_uid) {
 290                         CDEBUG(D_SEC, "remote client %s: auth/mapped uid %u/%u "
 291                                "while client claims %u:%u/%u:%u\n",
 292                                libcfs_nid2str(peernid), req->rq_auth_uid,
 293                                req->rq_auth_mapped_uid,
 294                                pud->pud_uid, pud->pud_gid,
 295                                pud->pud_fsuid, pud->pud_fsgid);
 296                         RETURN(-EACCES);
 297                 }
 298         } else {
 299                 if (req->rq_auth_uid != pud->pud_uid) {
 300                         CDEBUG(D_SEC, "local client %s: auth uid %u "
 301                                "while client claims %u:%u/%u:%u\n",
 302                                libcfs_nid2str(peernid), req->rq_auth_uid,
 303                                pud->pud_uid, pud->pud_gid,
 304                                pud->pud_fsuid, pud->pud_fsgid);
 305                         RETURN(-EACCES);
 306                 }
 307         }
 308
 309         if (is_identity_get_disabled(mdt->mdt_identity_cache)) {
 310                 if (med->med_rmtclient) {
 311                         CDEBUG(D_SEC, "remote client must run with identity_get "
 312                                "enabled!\n");
 313                         RETURN(-EACCES);
 314                 }
 315                 RETURN(0);
 316         }
 317
 318         identity = mdt_identity_get(mdt->mdt_identity_cache, pud->pud_uid);
 319         if (IS_ERR(identity)) {
 320                 if (unlikely(PTR_ERR(identity) == -EREMCHG &&
 321                              !med->med_rmtclient)) {
 322                         RETURN(0);
 323                 } else {
 324                         CDEBUG(D_SEC, "Deny access without identity: uid %u\n",
 325                                pud->pud_uid);
 326                         RETURN(-EACCES);
 327                }
 328         }
 329
 330         perm = mdt_identity_get_perm(identity, med->med_rmtclient, peernid);
 331         /* find out the setuid/setgid attempt */
 332         setuid = (pud->pud_uid != pud->pud_fsuid);
 333         setgid = (pud->pud_gid != pud->pud_fsgid ||
 334                   pud->pud_gid != identity->mi_gid);
 335
 336         /* check permission of setuid */
 337         if (setuid && !(perm & CFS_SETUID_PERM)) {
 338                 CDEBUG(D_SEC, "mdt blocked setuid attempt (%u -> %u) from %s\n",
 339                        pud->pud_uid, pud->pud_fsuid, libcfs_nid2str(peernid));
 340                 GOTO(out, rc = -EACCES);
 341         }
 342
 343         /* check permission of setgid */
 344         if (setgid && !(perm & CFS_SETGID_PERM)) {
 345                 CDEBUG(D_SEC, "mdt blocked setgid attempt (%u:%u/%u:%u -> %u) "
 346                        "from %s\n", pud->pud_uid, pud->pud_gid,
 347                        pud->pud_fsuid, pud->pud_fsgid, identity->mi_gid,
 348                        libcfs_nid2str(peernid));
 349                 GOTO(out, rc = -EACCES);
 350         }
 351
 352         EXIT;
 353
 354 out:
 355         mdt_identity_put(mdt->mdt_identity_cache, identity);
 356         return rc;
 357 }
 358
 359 static int old_init_ucred(struct mdt_thread_info *info,
 360                           struct mdt_body *body)
 361 {
 362         struct md_ucred *uc = mdt_ucred(info);
 363         struct mdt_device  *mdt = info->mti_mdt;
 364         struct md_identity *identity = NULL;
 365
 366         ENTRY;
 367
 368         uc->mu_valid = UCRED_INVALID;
 369         uc->mu_o_uid = uc->mu_uid = body->uid;
 370         uc->mu_o_gid = uc->mu_gid = body->gid;
 371         uc->mu_o_fsuid = uc->mu_fsuid = body->fsuid;
 372         uc->mu_o_fsgid = uc->mu_fsgid = body->fsgid;
 373         uc->mu_suppgids[0] = body->suppgid;
 374         uc->mu_suppgids[1] = -1;
 375         uc->mu_ginfo = NULL;
 376         if (!is_identity_get_disabled(mdt->mdt_identity_cache)) {
 377                 identity = mdt_identity_get(mdt->mdt_identity_cache,
 378                                             uc->mu_fsuid);
 379                 if (IS_ERR(identity)) {
 380                         if (unlikely(PTR_ERR(identity) == -EREMCHG)) {
 381                                 identity = NULL;
 382                         } else {
 383                                 CDEBUG(D_SEC, "Deny access without identity: "
 384                                        "uid %u\n", uc->mu_fsuid);
 385                                 RETURN(-EACCES);
 386                         }
 387                 }
 388         }
 389         uc->mu_identity = identity;
 390
 391         /* XXX: need to process root_squash here. */
 392         mdt_root_squash(info);
 393
 394         /* remove fs privilege for non-root user */
 395         if (uc->mu_fsuid)
 396                 uc->mu_cap = body->capability & ~CAP_FS_MASK;
 397         else
 398                 uc->mu_cap = body->capability;
 399         uc->mu_valid = UCRED_OLD;
 400
 401         RETURN(0);
 402 }
 403
 404 static int old_init_ucred_reint(struct mdt_thread_info *info)
 405 {
 406         struct md_ucred *uc = mdt_ucred(info);
 407         struct mdt_device  *mdt = info->mti_mdt;
 408         struct md_identity *identity = NULL;
 409
 410         ENTRY;
 411
 412         uc->mu_valid = UCRED_INVALID;
 413         uc->mu_o_uid = uc->mu_o_fsuid = uc->mu_uid = uc->mu_fsuid;
 414         uc->mu_o_gid = uc->mu_o_fsgid = uc->mu_gid = uc->mu_fsgid;
 415         uc->mu_ginfo = NULL;
 416         if (!is_identity_get_disabled(mdt->mdt_identity_cache)) {
 417                 identity = mdt_identity_get(mdt->mdt_identity_cache,
 418                                             uc->mu_fsuid);
 419                 if (IS_ERR(identity)) {
 420                         if (unlikely(PTR_ERR(identity) == -EREMCHG)) {
 421                                 identity = NULL;
 422                         } else {
 423                                 CDEBUG(D_SEC, "Deny access without identity: "
 424                                        "uid %u\n", uc->mu_fsuid);
 425                                 RETURN(-EACCES);
 426                         }
 427                 }
 428         }
 429         uc->mu_identity = identity;
 430
 431         /* XXX: need to process root_squash here. */
 432         mdt_root_squash(info);
 433
 434         /* remove fs privilege for non-root user */
 435         if (uc->mu_fsuid)
 436                 uc->mu_cap &= ~CAP_FS_MASK;
 437         uc->mu_valid = UCRED_OLD;
 438
 439         RETURN(0);
 440 }
 441
 442 int mdt_init_ucred(struct mdt_thread_info *info, struct mdt_body *body)
 443 {
 444         struct ptlrpc_request *req = mdt_info_req(info);
 445         struct md_ucred       *uc  = mdt_ucred(info);
 446
 447         if ((uc->mu_valid == UCRED_OLD) || (uc->mu_valid == UCRED_NEW))
 448                 return 0;
 449
 450         mdt_exit_ucred(info);
 451
 452         if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc)
 453                 return old_init_ucred(info, body);
 454         else
 455                 return new_init_ucred(info, BODY_INIT, body);
 456 }
 457
 458 int mdt_init_ucred_reint(struct mdt_thread_info *info)
 459 {
 460         struct ptlrpc_request *req = mdt_info_req(info);
 461         struct md_ucred       *uc  = mdt_ucred(info);
 462
 463         if ((uc->mu_valid == UCRED_OLD) || (uc->mu_valid == UCRED_NEW))
 464                 return 0;
 465
 466         mdt_exit_ucred(info);
 467
 468         if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc)
 469                 return old_init_ucred_reint(info);
 470         else
 471                 return new_init_ucred(info, REC_INIT, NULL);
 472 }
 473
 474 /* copied from lov/lov_ea.c, just for debugging, will be removed later */
 475 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm)
 476 {
 477         const struct lov_ost_data_v1 *lod;
 478         int i;
 479         __s16 stripe_count =
 480                 le16_to_cpu(((struct lov_user_md*)lmm)->lmm_stripe_count);
 481
 482         CDEBUG(level, "objid "LPX64", magic 0x%08X, pattern %#X\n",
 483                le64_to_cpu(lmm->lmm_object_id), le32_to_cpu(lmm->lmm_magic),
 484                le32_to_cpu(lmm->lmm_pattern));
 485         CDEBUG(level,"stripe_size=0x%x, stripe_count=0x%x\n",
 486                le32_to_cpu(lmm->lmm_stripe_size),
 487                le32_to_cpu(lmm->lmm_stripe_count));
 488         LASSERT(stripe_count <= (__s16)LOV_MAX_STRIPE_COUNT);
 489         for (i = 0, lod = lmm->lmm_objects; i < stripe_count; i++, lod++) {
 490                 CDEBUG(level, "stripe %u idx %u subobj "LPX64"/"LPX64"\n",
 491                        i, le32_to_cpu(lod->l_ost_idx),
 492                        le64_to_cpu(lod->l_object_gr),
 493                        le64_to_cpu(lod->l_object_id));
 494         }
 495 }
 496
 497 void mdt_shrink_reply(struct mdt_thread_info *info)
 498 {
 499         struct req_capsule *pill = info->mti_pill;
 500         struct mdt_body    *body;
 501         int                md_size;
 502         int                acl_size;
 503         ENTRY;
 504
 505         body = req_capsule_server_get(pill, &RMF_MDT_BODY);
 506         LASSERT(body != NULL);
 507
 508         if (body->valid & (OBD_MD_FLDIREA | OBD_MD_FLEASIZE | OBD_MD_LINKNAME))
 509                 md_size = body->eadatasize;
 510         else
 511                 md_size = 0;
 512
 513         acl_size = body->aclsize;
 514
 515         CDEBUG(D_INFO, "Shrink to md_size = %d cookie/acl_size = %d"
 516                         " MDSCAPA = "LPX64", OSSCAPA = "LPX64"\n",
 517                         md_size, acl_size,
 518                         body->valid & OBD_MD_FLMDSCAPA,
 519                         body->valid & OBD_MD_FLOSSCAPA);
 520 /*
 521             &RMF_MDT_BODY,
 522             &RMF_MDT_MD,
 523             &RMF_ACL, or &RMF_LOGCOOKIES
 524 (optional)  &RMF_CAPA1,
 525 (optional)  &RMF_CAPA2,
 526 (optional)  something else
 527 */
 528
 529         if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
 530                 req_capsule_shrink(pill, &RMF_MDT_MD, md_size,
 531                                    RCL_SERVER);
 532         if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
 533                 req_capsule_shrink(pill, &RMF_ACL, acl_size, RCL_SERVER);
 534         else if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
 535                 req_capsule_shrink(pill, &RMF_LOGCOOKIES,
 536                                             acl_size, RCL_SERVER);
 537
 538         if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_SERVER) &&
 539                     !(body->valid & OBD_MD_FLMDSCAPA))
 540                 req_capsule_shrink(pill, &RMF_CAPA1, 0, RCL_SERVER);
 541
 542         if (req_capsule_has_field(pill, &RMF_CAPA2, RCL_SERVER) &&
 543                 !(body->valid & OBD_MD_FLOSSCAPA))
 544                 req_capsule_shrink(pill, &RMF_CAPA2, 0, RCL_SERVER);
 545
 546         /*
 547          * Some more field should be shrinked if needed.
 548          * This should be done by those who added fields to reply message.
 549          */
 550         EXIT;
 551 }
 552
 553
 554 /* if object is dying, pack the lov/llog data,
 555  * parameter info->mti_attr should be valid at this point! */
 556 int mdt_handle_last_unlink(struct mdt_thread_info *info, struct mdt_object *mo,
 557                            const struct md_attr *ma)
 558 {
 559         struct mdt_body       *repbody;
 560         const struct lu_attr *la = &ma->ma_attr;
 561         ENTRY;
 562
 563         repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
 564         LASSERT(repbody != NULL);
 565
 566         if (ma->ma_valid & MA_INODE)
 567                 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(mo));
 568
 569         if (ma->ma_valid & MA_LOV) {
 570                 __u32 mode;
 571
 572                 if (mdt_object_exists(mo) < 0)
 573                         /* If it is a remote object, and we do not retrieve
 574                          * EA back unlink reg file*/
 575                         mode = S_IFREG;
 576                 else
 577                         mode = lu_object_attr(&mo->mot_obj.mo_lu);
 578
 579                 LASSERT(ma->ma_lmm_size);
 580                 mdt_dump_lmm(D_INFO, ma->ma_lmm);
 581                 repbody->eadatasize = ma->ma_lmm_size;
 582                 if (S_ISREG(mode))
 583                         repbody->valid |= OBD_MD_FLEASIZE;
 584                 else if (S_ISDIR(mode))
 585                         repbody->valid |= OBD_MD_FLDIREA;
 586                 else
 587                         LBUG();
 588         }
 589
 590         if (ma->ma_cookie_size && (ma->ma_valid & MA_COOKIE)) {
 591                 repbody->aclsize = ma->ma_cookie_size;
 592                 repbody->valid |= OBD_MD_FLCOOKIE;
 593         }
 594
 595         RETURN(0);
 596 }
 597
 598 static inline unsigned int attr_unpack(__u64 sa_valid) {
 599         unsigned int ia_valid = 0;
 600
 601         if (sa_valid & MDS_ATTR_MODE)
 602                 ia_valid |= ATTR_MODE;
 603         if (sa_valid & MDS_ATTR_UID)
 604                 ia_valid |= ATTR_UID;
 605         if (sa_valid & MDS_ATTR_GID)
 606                 ia_valid |= ATTR_GID;
 607         if (sa_valid & MDS_ATTR_SIZE)
 608                 ia_valid |= ATTR_SIZE;
 609         if (sa_valid & MDS_ATTR_ATIME)
 610                 ia_valid |= ATTR_ATIME;
 611         if (sa_valid & MDS_ATTR_MTIME)
 612                 ia_valid |= ATTR_MTIME;
 613         if (sa_valid & MDS_ATTR_CTIME)
 614                 ia_valid |= ATTR_CTIME;
 615         if (sa_valid & MDS_ATTR_ATIME_SET)
 616                 ia_valid |= ATTR_ATIME_SET;
 617         if (sa_valid & MDS_ATTR_MTIME_SET)
 618                 ia_valid |= ATTR_MTIME_SET;
 619         if (sa_valid & MDS_ATTR_FORCE)
 620                 ia_valid |= ATTR_FORCE;
 621         if (sa_valid & MDS_ATTR_ATTR_FLAG)
 622                 ia_valid |= ATTR_ATTR_FLAG;
 623         if (sa_valid & MDS_ATTR_KILL_SUID)
 624                 ia_valid |=  ATTR_KILL_SUID;
 625         if (sa_valid & MDS_ATTR_KILL_SGID)
 626                 ia_valid |= ATTR_KILL_SGID;
 627         if (sa_valid & MDS_ATTR_CTIME_SET)
 628                 ia_valid |= ATTR_CTIME_SET;
 629         if (sa_valid & MDS_ATTR_FROM_OPEN)
 630                 ia_valid |= ATTR_FROM_OPEN;
 631         if (sa_valid & MDS_ATTR_BLOCKS)
 632                 ia_valid |= ATTR_BLOCKS;
 633         if (sa_valid & MDS_ATTR_TRUNC)
 634                 ia_valid |= ATTR_TRUNC;
 635         if (sa_valid & MDS_OPEN_OWNEROVERRIDE)
 636                 ia_valid |= MDS_OPEN_OWNEROVERRIDE;
 637         return ia_valid;
 638 }
 639
 640 static __u64 mdt_attr_valid_xlate(__u64 in, struct mdt_reint_record *rr,
 641                                   struct md_attr *ma)
 642 {
 643         __u64 out;
 644
 645         out = 0;
 646         if (in & ATTR_MODE)
 647                 out |= LA_MODE;
 648         if (in & ATTR_UID)
 649                 out |= LA_UID;
 650         if (in & ATTR_GID)
 651                 out |= LA_GID;
 652         if (in & ATTR_SIZE)
 653                 out |= LA_SIZE;
 654         if (in & ATTR_BLOCKS)
 655                 out |= LA_BLOCKS;
 656
 657         if (in & ATTR_FROM_OPEN)
 658                 rr->rr_flags |= MRF_SETATTR_LOCKED;
 659
 660         if (in & ATTR_ATIME_SET)
 661                 out |= LA_ATIME;
 662
 663         if (in & ATTR_CTIME_SET)
 664                 out |= LA_CTIME;
 665
 666         if (in & ATTR_MTIME_SET)
 667                 out |= LA_MTIME;
 668
 669         if (in & ATTR_ATTR_FLAG)
 670                 out |= LA_FLAGS;
 671
 672         if (in & ATTR_TRUNC)
 673                 out |= LA_TRUNC;
 674
 675         if (in & MDS_OPEN_OWNEROVERRIDE)
 676                 out |= MDS_OPEN_OWNEROVERRIDE;
 677
 678         /*XXX need ATTR_RAW?*/
 679         in &= ~(ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_SIZE|ATTR_BLOCKS|
 680                 ATTR_ATIME|ATTR_MTIME|ATTR_CTIME|ATTR_FROM_OPEN|
 681                 ATTR_ATIME_SET|ATTR_CTIME_SET|ATTR_MTIME_SET|
 682                 ATTR_ATTR_FLAG|ATTR_RAW|ATTR_TRUNC|MDS_OPEN_OWNEROVERRIDE);
 683         if (in != 0)
 684                 CERROR("Unknown attr bits: %#llx\n", in);
 685         return out;
 686 }
 687 /* unpacking */
 688
 689 static int mdt_setattr_unpack_rec(struct mdt_thread_info *info)
 690 {
 691         struct md_ucred         *uc  = mdt_ucred(info);
 692         struct md_attr          *ma = &info->mti_attr;
 693         struct lu_attr          *la = &ma->ma_attr;
 694         struct req_capsule      *pill = info->mti_pill;
 695         struct mdt_reint_record *rr = &info->mti_rr;
 696         struct mdt_rec_setattr  *rec;
 697         ENTRY;
 698
 699         CLASSERT(sizeof(struct mdt_rec_setattr)== sizeof(struct mdt_rec_reint));
 700         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 701         if (rec == NULL)
 702                 RETURN(-EFAULT);
 703
 704         uc->mu_fsuid = rec->sa_fsuid;
 705         uc->mu_fsgid = rec->sa_fsgid;
 706         uc->mu_cap   = rec->sa_cap;
 707         uc->mu_suppgids[0] = rec->sa_suppgid;
 708         uc->mu_suppgids[1] = -1;
 709
 710         rr->rr_fid1 = &rec->sa_fid;
 711         la->la_valid = mdt_attr_valid_xlate(attr_unpack(rec->sa_valid), rr, ma);
 712         la->la_mode  = rec->sa_mode;
 713         la->la_flags = rec->sa_attr_flags;
 714         la->la_uid   = rec->sa_uid;
 715         la->la_gid   = rec->sa_gid;
 716         la->la_size  = rec->sa_size;
 717         la->la_blocks = rec->sa_blocks;
 718         la->la_ctime = rec->sa_ctime;
 719         la->la_atime = rec->sa_atime;
 720         la->la_mtime = rec->sa_mtime;
 721         ma->ma_valid = MA_INODE;
 722
 723         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
 724                 mdt_set_capainfo(info, 0, rr->rr_fid1,
 725                                  req_capsule_client_get(pill, &RMF_CAPA1));
 726
 727         RETURN(0);
 728 }
 729
 730 static int mdt_epoch_unpack(struct mdt_thread_info *info)
 731 {
 732         struct req_capsule *pill = info->mti_pill;
 733         ENTRY;
 734
 735         if (req_capsule_get_size(pill, &RMF_MDT_EPOCH, RCL_CLIENT))
 736                 info->mti_epoch = req_capsule_client_get(pill, &RMF_MDT_EPOCH);
 737         else
 738                 info->mti_epoch = NULL;
 739         RETURN(info->mti_epoch == NULL ? -EFAULT : 0);
 740 }
 741
 742 static inline int mdt_dlmreq_unpack(struct mdt_thread_info *info) {
 743         struct req_capsule      *pill = info->mti_pill;
 744
 745         if (req_capsule_get_size(pill, &RMF_DLM_REQ, RCL_CLIENT)) {
 746                 info->mti_dlm_req = req_capsule_client_get(pill, &RMF_DLM_REQ);
 747                 if (info->mti_dlm_req == NULL)
 748                         RETURN(-EFAULT);
 749         }
 750
 751         RETURN(0);
 752 }
 753
 754 static int mdt_setattr_unpack(struct mdt_thread_info *info)
 755 {
 756         struct md_attr          *ma = &info->mti_attr;
 757         struct req_capsule      *pill = info->mti_pill;
 758         int rc;
 759         ENTRY;
 760
 761         rc = mdt_setattr_unpack_rec(info);
 762         if (rc)
 763                 RETURN(rc);
 764
 765         /* Epoch may be absent */
 766         mdt_epoch_unpack(info);
 767
 768         ma->ma_lmm_size = req_capsule_get_size(pill, &RMF_EADATA, RCL_CLIENT);
 769         if (ma->ma_lmm_size) {
 770                 ma->ma_lmm = req_capsule_client_get(pill, &RMF_EADATA);
 771                 ma->ma_valid |= MA_LOV;
 772         }
 773
 774         ma->ma_cookie_size = req_capsule_get_size(pill, &RMF_LOGCOOKIES,
 775                                                   RCL_CLIENT);
 776         if (ma->ma_cookie_size) {
 777                 ma->ma_cookie = req_capsule_client_get(pill, &RMF_LOGCOOKIES);
 778                 ma->ma_valid |= MA_COOKIE;
 779         }
 780
 781         rc = mdt_dlmreq_unpack(info);
 782         RETURN(rc);
 783 }
 784
 785 int mdt_close_unpack(struct mdt_thread_info *info)
 786 {
 787         int rc;
 788         ENTRY;
 789
 790         rc = mdt_epoch_unpack(info);
 791         if (rc)
 792                 RETURN(rc);
 793
 794         RETURN(mdt_setattr_unpack_rec(info));
 795 }
 796
 797 static int mdt_create_unpack(struct mdt_thread_info *info)
 798 {
 799         struct md_ucred         *uc  = mdt_ucred(info);
 800         struct mdt_rec_create   *rec;
 801         struct lu_attr          *attr = &info->mti_attr.ma_attr;
 802         struct mdt_reint_record *rr = &info->mti_rr;
 803         struct req_capsule      *pill = info->mti_pill;
 804         struct md_op_spec       *sp = &info->mti_spec;
 805         int rc;
 806         ENTRY;
 807
 808         CLASSERT(sizeof(struct mdt_rec_create) == sizeof(struct mdt_rec_reint));
 809         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 810         if (rec == NULL)
 811                 RETURN(-EFAULT);
 812
 813         uc->mu_fsuid = rec->cr_fsuid;
 814         uc->mu_fsgid = rec->cr_fsgid;
 815         uc->mu_cap   = rec->cr_cap;
 816         uc->mu_suppgids[0] = rec->cr_suppgid1;
 817         uc->mu_suppgids[1] = -1;
 818
 819         rr->rr_fid1 = &rec->cr_fid1;
 820         rr->rr_fid2 = &rec->cr_fid2;
 821         attr->la_mode = rec->cr_mode;
 822         attr->la_rdev  = rec->cr_rdev;
 823         attr->la_uid   = rec->cr_fsuid;
 824         attr->la_gid   = rec->cr_fsgid;
 825         attr->la_ctime = rec->cr_time;
 826         attr->la_mtime = rec->cr_time;
 827         attr->la_atime = rec->cr_time;
 828         attr->la_valid = LA_MODE | LA_RDEV | LA_UID | LA_GID |
 829                          LA_CTIME | LA_MTIME | LA_ATIME;
 830         memset(&sp->u, 0, sizeof(sp->u));
 831         sp->sp_cr_flags = rec->cr_flags;
 832         sp->sp_ck_split = !!(rec->cr_bias & MDS_CHECK_SPLIT);
 833         info->mti_cross_ref = !!(rec->cr_bias & MDS_CROSS_REF);
 834
 835         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
 836                 mdt_set_capainfo(info, 0, rr->rr_fid1,
 837                                  req_capsule_client_get(pill, &RMF_CAPA1));
 838         mdt_set_capainfo(info, 1, rr->rr_fid2, BYPASS_CAPA);
 839
 840         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
 841         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
 842         LASSERT(rr->rr_name && rr->rr_namelen > 0);
 843
 844 #ifdef CONFIG_FS_POSIX_ACL
 845         if (sp->sp_cr_flags & MDS_CREATE_RMT_ACL) {
 846                 if (S_ISDIR(attr->la_mode))
 847                         sp->u.sp_pfid = rr->rr_fid1;
 848                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_RMT_ACL);
 849                 LASSERT(req_capsule_field_present(pill, &RMF_EADATA,
 850                                                   RCL_CLIENT));
 851                 sp->u.sp_ea.eadata = req_capsule_client_get(pill, &RMF_EADATA);
 852                 sp->u.sp_ea.eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
 853                                                              RCL_CLIENT);
 854                 sp->u.sp_ea.fid = rr->rr_fid1;
 855                 RETURN(0);
 856         }
 857 #endif
 858         if (S_ISDIR(attr->la_mode)) {
 859                 /* pass parent fid for cross-ref cases */
 860                 sp->u.sp_pfid = rr->rr_fid1;
 861                 if (sp->sp_cr_flags & MDS_CREATE_SLAVE_OBJ) {
 862                         /* create salve object req, need
 863                          * unpack split ea here
 864                          */
 865                        req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_SLAVE);
 866                        LASSERT(req_capsule_field_present(pill, &RMF_EADATA,
 867                                                          RCL_CLIENT));
 868                        sp->u.sp_ea.eadata = req_capsule_client_get(pill,
 869                                                                    &RMF_EADATA);
 870                        sp->u.sp_ea.eadatalen = req_capsule_get_size(pill,
 871                                                                     &RMF_EADATA,
 872                                                                     RCL_CLIENT);
 873                        sp->u.sp_ea.fid = rr->rr_fid1;
 874                        RETURN(0);
 875                 }
 876                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_RMT_ACL);
 877         } else if (S_ISLNK(attr->la_mode)) {
 878                 const char *tgt = NULL;
 879
 880                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_SYM);
 881                 if (req_capsule_get_size(pill, &RMF_SYMTGT, RCL_CLIENT)) {
 882                         tgt = req_capsule_client_get(pill, &RMF_SYMTGT);
 883                         sp->u.sp_symname = tgt;
 884                 }
 885                 if (tgt == NULL)
 886                         RETURN(-EFAULT);
 887         } else {
 888                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_RMT_ACL);
 889         }
 890         rc = mdt_dlmreq_unpack(info);
 891         RETURN(rc);
 892 }
 893
 894 static int mdt_link_unpack(struct mdt_thread_info *info)
 895 {
 896         struct md_ucred         *uc  = mdt_ucred(info);
 897         struct mdt_rec_link     *rec;
 898         struct lu_attr          *attr = &info->mti_attr.ma_attr;
 899         struct mdt_reint_record *rr = &info->mti_rr;
 900         struct req_capsule      *pill = info->mti_pill;
 901         int rc;
 902         ENTRY;
 903
 904         CLASSERT(sizeof(struct mdt_rec_link) == sizeof(struct mdt_rec_reint));
 905         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 906         if (rec == NULL)
 907                 RETURN(-EFAULT);
 908
 909         uc->mu_fsuid = rec->lk_fsuid;
 910         uc->mu_fsgid = rec->lk_fsgid;
 911         uc->mu_cap   = rec->lk_cap;
 912         uc->mu_suppgids[0] = rec->lk_suppgid1;
 913         uc->mu_suppgids[1] = rec->lk_suppgid2;
 914
 915         attr->la_uid = rec->lk_fsuid;
 916         attr->la_gid = rec->lk_fsgid;
 917         rr->rr_fid1 = &rec->lk_fid1;
 918         rr->rr_fid2 = &rec->lk_fid2;
 919         attr->la_ctime = rec->lk_time;
 920         attr->la_mtime = rec->lk_time;
 921         attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME;
 922
 923         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
 924                 mdt_set_capainfo(info, 0, rr->rr_fid1,
 925                                  req_capsule_client_get(pill, &RMF_CAPA1));
 926         if (req_capsule_get_size(pill, &RMF_CAPA2, RCL_CLIENT))
 927                 mdt_set_capainfo(info, 1, rr->rr_fid2,
 928                                  req_capsule_client_get(pill, &RMF_CAPA2));
 929
 930         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
 931         if (rr->rr_name == NULL)
 932                 RETURN(-EFAULT);
 933         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
 934         LASSERT(rr->rr_namelen > 0);
 935         info->mti_spec.sp_ck_split = !!(rec->lk_bias & MDS_CHECK_SPLIT);
 936         info->mti_cross_ref = !!(rec->lk_bias & MDS_CROSS_REF);
 937
 938         rc = mdt_dlmreq_unpack(info);
 939         RETURN(rc);
 940 }
 941
 942 static int mdt_unlink_unpack(struct mdt_thread_info *info)
 943 {
 944         struct md_ucred         *uc  = mdt_ucred(info);
 945         struct mdt_rec_unlink   *rec;
 946         struct md_attr          *ma = &info->mti_attr;
 947         struct lu_attr          *attr = &info->mti_attr.ma_attr;
 948         struct mdt_reint_record *rr = &info->mti_rr;
 949         struct req_capsule      *pill = info->mti_pill;
 950         int rc;
 951         ENTRY;
 952
 953         CLASSERT(sizeof(struct mdt_rec_unlink) == sizeof(struct mdt_rec_reint));
 954         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 955         if (rec == NULL)
 956                 RETURN(-EFAULT);
 957
 958         uc->mu_fsuid = rec->ul_fsuid;
 959         uc->mu_fsgid = rec->ul_fsgid;
 960         uc->mu_cap   = rec->ul_cap;
 961         uc->mu_suppgids[0] = rec->ul_suppgid1;
 962         uc->mu_suppgids[1] = -1;
 963
 964         attr->la_uid = rec->ul_fsuid;
 965         attr->la_gid = rec->ul_fsgid;
 966         rr->rr_fid1 = &rec->ul_fid1;
 967         rr->rr_fid2 = &rec->ul_fid2;
 968         attr->la_ctime = rec->ul_time;
 969         attr->la_mtime = rec->ul_time;
 970         attr->la_mode  = rec->ul_mode;
 971         attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME | LA_MODE;
 972
 973         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
 974                 mdt_set_capainfo(info, 0, rr->rr_fid1,
 975                                  req_capsule_client_get(pill, &RMF_CAPA1));
 976
 977         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
 978         if (rr->rr_name == NULL)
 979                 RETURN(-EFAULT);
 980         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
 981         LASSERT(rr->rr_namelen > 0);
 982         info->mti_spec.sp_ck_split = !!(rec->ul_bias & MDS_CHECK_SPLIT);
 983         info->mti_cross_ref = !!(rec->ul_bias & MDS_CROSS_REF);
 984         if (rec->ul_bias & MDS_VTX_BYPASS)
 985                 ma->ma_attr_flags |= MDS_VTX_BYPASS;
 986         else
 987                 ma->ma_attr_flags &= ~MDS_VTX_BYPASS;
 988
 989         rc = mdt_dlmreq_unpack(info);
 990         RETURN(rc);
 991 }
 992
 993 static int mdt_rename_unpack(struct mdt_thread_info *info)
 994 {
 995         struct md_ucred         *uc = mdt_ucred(info);
 996         struct mdt_rec_rename   *rec;
 997         struct md_attr          *ma = &info->mti_attr;
 998         struct lu_attr          *attr = &info->mti_attr.ma_attr;
 999         struct mdt_reint_record *rr = &info->mti_rr;
1000         struct req_capsule      *pill = info->mti_pill;
1001         int rc;
1002         ENTRY;
1003
1004         CLASSERT(sizeof(struct mdt_rec_rename) == sizeof(struct mdt_rec_reint));
1005         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1006         if (rec == NULL)
1007                 RETURN(-EFAULT);
1008
1009         uc->mu_fsuid = rec->rn_fsuid;
1010         uc->mu_fsgid = rec->rn_fsgid;
1011         uc->mu_cap   = rec->rn_cap;
1012         uc->mu_suppgids[0] = rec->rn_suppgid1;
1013         uc->mu_suppgids[1] = rec->rn_suppgid2;
1014
1015         attr->la_uid = rec->rn_fsuid;
1016         attr->la_gid = rec->rn_fsgid;
1017         rr->rr_fid1 = &rec->rn_fid1;
1018         rr->rr_fid2 = &rec->rn_fid2;
1019         attr->la_ctime = rec->rn_time;
1020         attr->la_mtime = rec->rn_time;
1021         /* rename_tgt contains the mode already */
1022         attr->la_mode = rec->rn_mode;
1023         attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME | LA_MODE;
1024
1025         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
1026                 mdt_set_capainfo(info, 0, rr->rr_fid1,
1027                                  req_capsule_client_get(pill, &RMF_CAPA1));
1028         if (req_capsule_get_size(pill, &RMF_CAPA2, RCL_CLIENT))
1029                 mdt_set_capainfo(info, 1, rr->rr_fid2,
1030                                  req_capsule_client_get(pill, &RMF_CAPA2));
1031
1032         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1033         rr->rr_tgt = req_capsule_client_get(pill, &RMF_SYMTGT);
1034         if (rr->rr_name == NULL || rr->rr_tgt == NULL)
1035                 RETURN(-EFAULT);
1036         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1037         LASSERT(rr->rr_namelen > 0);
1038         rr->rr_tgtlen = req_capsule_get_size(pill, &RMF_SYMTGT, RCL_CLIENT) - 1;
1039         LASSERT(rr->rr_tgtlen > 0);
1040         info->mti_spec.sp_ck_split = !!(rec->rn_bias & MDS_CHECK_SPLIT);
1041         info->mti_cross_ref = !!(rec->rn_bias & MDS_CROSS_REF);
1042         if (rec->rn_bias & MDS_VTX_BYPASS)
1043                 ma->ma_attr_flags |= MDS_VTX_BYPASS;
1044         else
1045                 ma->ma_attr_flags &= ~MDS_VTX_BYPASS;
1046
1047         rc = mdt_dlmreq_unpack(info);
1048         RETURN(rc);
1049 }
1050
1051 static int mdt_open_unpack(struct mdt_thread_info *info)
1052 {
1053         struct md_ucred         *uc = mdt_ucred(info);
1054         struct mdt_rec_create   *rec;
1055         struct lu_attr          *attr = &info->mti_attr.ma_attr;
1056         struct req_capsule      *pill = info->mti_pill;
1057         struct mdt_reint_record *rr   = &info->mti_rr;
1058         struct ptlrpc_request   *req  = mdt_info_req(info);
1059         struct md_op_spec       *sp   = &info->mti_spec;
1060         ENTRY;
1061
1062         CLASSERT(sizeof(struct mdt_rec_create) == sizeof(struct mdt_rec_reint));
1063         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1064         if (rec == NULL)
1065                 RETURN(-EFAULT);
1066
1067         uc->mu_fsuid = rec->cr_fsuid;
1068         uc->mu_fsgid = rec->cr_fsgid;
1069         uc->mu_cap   = rec->cr_cap;
1070         uc->mu_suppgids[0] = rec->cr_suppgid1;
1071         uc->mu_suppgids[1] = rec->cr_suppgid2;
1072
1073         rr->rr_fid1   = &rec->cr_fid1;
1074         rr->rr_fid2   = &rec->cr_fid2;
1075         rr->rr_handle = &rec->cr_old_handle;
1076         attr->la_mode = rec->cr_mode;
1077         attr->la_rdev  = rec->cr_rdev;
1078         attr->la_uid   = rec->cr_fsuid;
1079         attr->la_gid   = rec->cr_fsgid;
1080         attr->la_ctime = rec->cr_time;
1081         attr->la_mtime = rec->cr_time;
1082         attr->la_atime = rec->cr_time;
1083         attr->la_valid = LA_MODE  | LA_RDEV  | LA_UID   | LA_GID |
1084                          LA_CTIME | LA_MTIME | LA_ATIME;
1085         memset(&info->mti_spec.u, 0, sizeof(info->mti_spec.u));
1086         info->mti_spec.sp_cr_flags = rec->cr_flags;
1087         info->mti_replayepoch = rec->cr_ioepoch;
1088
1089         info->mti_spec.sp_ck_split = !!(rec->cr_bias & MDS_CHECK_SPLIT);
1090         info->mti_cross_ref = !!(rec->cr_bias & MDS_CROSS_REF);
1091
1092         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
1093                 mdt_set_capainfo(info, 0, rr->rr_fid1,
1094                                  req_capsule_client_get(pill, &RMF_CAPA1));
1095         if ((lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) &&
1096             (req_capsule_get_size(pill, &RMF_CAPA2, RCL_CLIENT))) {
1097 #if 0
1098                 mdt_set_capainfo(info, 1, rr->rr_fid2,
1099                                  req_capsule_client_get(pill, &RMF_CAPA2));
1100 #else
1101                 /*
1102                  * FIXME: capa in replay open request might have expired,
1103                  * bypass capa check. Security hole?
1104                  */
1105                 mdt_set_capainfo(info, 0, rr->rr_fid1, BYPASS_CAPA);
1106                 mdt_set_capainfo(info, 1, rr->rr_fid2, BYPASS_CAPA);
1107 #endif
1108         }
1109
1110         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1111         if (rr->rr_name == NULL)
1112                 RETURN(-EFAULT);
1113         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1114
1115         sp->u.sp_ea.eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
1116                                                      RCL_CLIENT);
1117         if (sp->u.sp_ea.eadatalen) {
1118                 sp->u.sp_ea.eadata = req_capsule_client_get(pill, &RMF_EADATA);
1119                 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
1120                         sp->u.sp_ea.no_lov_create = 1;
1121         }
1122
1123         RETURN(0);
1124 }
1125
1126 static int mdt_setxattr_unpack(struct mdt_thread_info *info)
1127 {
1128         struct mdt_reint_record   *rr   = &info->mti_rr;
1129         struct md_ucred           *uc   = mdt_ucred(info);
1130         struct lu_attr            *attr = &info->mti_attr.ma_attr;
1131         struct req_capsule        *pill = info->mti_pill;
1132         struct mdt_rec_setxattr   *rec;
1133         ENTRY;
1134
1135
1136         CLASSERT(sizeof(struct mdt_rec_setxattr) ==
1137                          sizeof(struct mdt_rec_reint));
1138
1139         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1140         if (rec == NULL)
1141                 RETURN(-EFAULT);
1142
1143         uc->mu_fsuid  = rec->sx_fsuid;
1144         uc->mu_fsgid  = rec->sx_fsgid;
1145         uc->mu_cap    = rec->sx_cap;
1146         uc->mu_suppgids[0] = rec->sx_suppgid1;
1147         uc->mu_suppgids[1] = -1;
1148
1149         rr->rr_opcode = rec->sx_opcode;
1150         rr->rr_fid1   = &rec->sx_fid;
1151         attr->la_valid = rec->sx_valid;
1152         attr->la_ctime = rec->sx_time;
1153         attr->la_size = rec->sx_size;
1154         attr->la_flags = rec->sx_flags;
1155
1156         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
1157                 mdt_set_capainfo(info, 0, rr->rr_fid1,
1158                                  req_capsule_client_get(pill, &RMF_CAPA1));
1159         else
1160                 mdt_set_capainfo(info, 0, rr->rr_fid1, BYPASS_CAPA);
1161
1162         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1163         if (rr->rr_name == NULL)
1164                 RETURN(-EFAULT);
1165         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1166         LASSERT(rr->rr_namelen > 0);
1167
1168         rr->rr_eadatalen = req_capsule_get_size(pill, &RMF_EADATA, RCL_CLIENT);
1169         if (rr->rr_eadatalen > 0) {
1170                 rr->rr_eadata = req_capsule_client_get(pill, &RMF_EADATA);
1171                 if (rr->rr_eadata == NULL)
1172                         RETURN(-EFAULT);
1173         }
1174
1175         RETURN(0);
1176 }
1177
1178
1179 typedef int (*reint_unpacker)(struct mdt_thread_info *info);
1180
1181 static reint_unpacker mdt_reint_unpackers[REINT_MAX] = {
1182         [REINT_SETATTR]  = mdt_setattr_unpack,
1183         [REINT_CREATE]   = mdt_create_unpack,
1184         [REINT_LINK]     = mdt_link_unpack,
1185         [REINT_UNLINK]   = mdt_unlink_unpack,
1186         [REINT_RENAME]   = mdt_rename_unpack,
1187         [REINT_OPEN]     = mdt_open_unpack,
1188         [REINT_SETXATTR] = mdt_setxattr_unpack
1189 };
1190
1191 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op)
1192 {
1193         int rc;
1194         ENTRY;
1195
1196         memset(&info->mti_rr, 0, sizeof(info->mti_rr));
1197         if (op < REINT_MAX && mdt_reint_unpackers[op] != NULL) {
1198                 info->mti_rr.rr_opcode = op;
1199                 rc = mdt_reint_unpackers[op](info);
1200         } else {
1201                 CERROR("Unexpected opcode %d\n", op);
1202                 rc = -EFAULT;
1203         }
1204         RETURN(rc);
1205 }