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  * 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  * lustre/mdt/mdt_lib.c
  37  *
  38  * Lustre Metadata Target (mdt) request unpacking helper.
  39  *
  40  * Author: Peter Braam <braam@clusterfs.com>
  41  * Author: Andreas Dilger <adilger@clusterfs.com>
  42  * Author: Phil Schwan <phil@clusterfs.com>
  43  * Author: Mike Shaver <shaver@clusterfs.com>
  44  * Author: Nikita Danilov <nikita@clusterfs.com>
  45  * Author: Huang Hua <huanghua@clusterfs.com>
  46  * Author: Fan Yong <fanyong@clusterfs.com>
  47  */
  48
  49
  50 #ifndef EXPORT_SYMTAB
  51 # define EXPORT_SYMTAB
  52 #endif
  53 #define DEBUG_SUBSYSTEM S_MDS
  54
  55 #include "mdt_internal.h"
  56
  57
  58 typedef enum ucred_init_type {
  59         NONE_INIT       = 0,
  60         BODY_INIT       = 1,
  61         REC_INIT        = 2
  62 } ucred_init_type_t;
  63
  64 void mdt_exit_ucred(struct mdt_thread_info *info)
  65 {
  66         struct md_ucred   *uc  = mdt_ucred(info);
  67         struct mdt_device *mdt = info->mti_mdt;
  68
  69         if (uc->mu_valid != UCRED_INIT) {
  70                 uc->mu_suppgids[0] = uc->mu_suppgids[1] = -1;
  71                 if (uc->mu_ginfo) {
  72                         groups_free(uc->mu_ginfo);
  73                         uc->mu_ginfo = NULL;
  74                 }
  75                 if (uc->mu_identity) {
  76                         mdt_identity_put(mdt->mdt_identity_cache,
  77                                          uc->mu_identity);
  78                         uc->mu_identity = NULL;
  79                 }
  80                 uc->mu_valid = UCRED_INIT;
  81         }
  82 }
  83
  84 /* XXX: root_squash will be redesigned in Lustre 1.7.
  85  * Do not root_squash for inter-MDS operations */
  86 static int mdt_root_squash(struct mdt_thread_info *info)
  87 {
  88         return 0;
  89 }
  90
  91 static int new_init_ucred(struct mdt_thread_info *info, ucred_init_type_t type,
  92                           void *buf)
  93 {
  94         struct ptlrpc_request   *req = mdt_info_req(info);
  95         struct mdt_device       *mdt = info->mti_mdt;
  96         struct ptlrpc_user_desc *pud = req->rq_user_desc;
  97         struct md_ucred         *ucred = mdt_ucred(info);
  98         lnet_nid_t               peernid = req->rq_peer.nid;
  99         __u32                    perm = 0;
 100         __u32                    remote = exp_connect_rmtclient(info->mti_exp);
 101         int                      setuid;
 102         int                      setgid;
 103         int                      rc = 0;
 104
 105         ENTRY;
 106
 107         LASSERT(req->rq_auth_gss);
 108         LASSERT(!req->rq_auth_usr_mdt);
 109         LASSERT(req->rq_user_desc);
 110
 111         ucred->mu_valid = UCRED_INVALID;
 112
 113         ucred->mu_o_uid   = pud->pud_uid;
 114         ucred->mu_o_gid   = pud->pud_gid;
 115         ucred->mu_o_fsuid = pud->pud_fsuid;
 116         ucred->mu_o_fsgid = pud->pud_fsgid;
 117
 118         if (type == BODY_INIT) {
 119                 struct mdt_body *body = (struct mdt_body *)buf;
 120
 121                 ucred->mu_suppgids[0] = body->suppgid;
 122                 ucred->mu_suppgids[1] = -1;
 123         }
 124
 125         /* sanity check: we expect the uid which client claimed is true */
 126         if (remote) {
 127                 if (req->rq_auth_mapped_uid == INVALID_UID) {
 128                         CDEBUG(D_SEC, "remote user not mapped, deny access!\n");
 129                         RETURN(-EACCES);
 130                 }
 131
 132                 if (ptlrpc_user_desc_do_idmap(req, pud))
 133                         RETURN(-EACCES);
 134
 135                 if (req->rq_auth_mapped_uid != pud->pud_uid) {
 136                         CDEBUG(D_SEC, "remote client %s: auth/mapped uid %u/%u "
 137                                "while client claims %u:%u/%u:%u\n",
 138                                libcfs_nid2str(peernid), req->rq_auth_uid,
 139                                req->rq_auth_mapped_uid,
 140                                pud->pud_uid, pud->pud_gid,
 141                                pud->pud_fsuid, pud->pud_fsgid);
 142                         RETURN(-EACCES);
 143                 }
 144         } else {
 145                 if (req->rq_auth_uid != pud->pud_uid) {
 146                         CDEBUG(D_SEC, "local client %s: auth uid %u "
 147                                "while client claims %u:%u/%u:%u\n",
 148                                libcfs_nid2str(peernid), req->rq_auth_uid,
 149                                pud->pud_uid, pud->pud_gid,
 150                                pud->pud_fsuid, pud->pud_fsgid);
 151                         RETURN(-EACCES);
 152                 }
 153         }
 154
 155         if (is_identity_get_disabled(mdt->mdt_identity_cache)) {
 156                 if (remote) {
 157                         CDEBUG(D_SEC, "remote client must run with identity_get "
 158                                "enabled!\n");
 159                         RETURN(-EACCES);
 160                 } else {
 161                         ucred->mu_identity = NULL;
 162                         perm = CFS_SETUID_PERM | CFS_SETGID_PERM |
 163                                CFS_SETGRP_PERM;
 164                 }
 165         } else {
 166                 struct md_identity *identity;
 167
 168                 identity = mdt_identity_get(mdt->mdt_identity_cache,
 169                                             pud->pud_uid);
 170                 if (IS_ERR(identity)) {
 171                         if (unlikely(PTR_ERR(identity) == -EREMCHG &&
 172                                      !remote)) {
 173                                 ucred->mu_identity = NULL;
 174                                 perm = CFS_SETUID_PERM | CFS_SETGID_PERM |
 175                                        CFS_SETGRP_PERM;
 176                         } else {
 177                                 CDEBUG(D_SEC, "Deny access without identity: uid %u\n",
 178                                        pud->pud_uid);
 179                                 RETURN(-EACCES);
 180                         }
 181                 } else {
 182                         ucred->mu_identity = identity;
 183                         perm = mdt_identity_get_perm(ucred->mu_identity,
 184                                                      remote, peernid);
 185                 }
 186         }
 187
 188         /* find out the setuid/setgid attempt */
 189         setuid = (pud->pud_uid != pud->pud_fsuid);
 190         setgid = ((pud->pud_gid != pud->pud_fsgid) ||
 191                   (ucred->mu_identity &&
 192                   (pud->pud_gid != ucred->mu_identity->mi_gid)));
 193
 194         /* check permission of setuid */
 195         if (setuid && !(perm & CFS_SETUID_PERM)) {
 196                 CDEBUG(D_SEC, "mdt blocked setuid attempt (%u -> %u) from %s\n",
 197                        pud->pud_uid, pud->pud_fsuid, libcfs_nid2str(peernid));
 198                 GOTO(out, rc = -EACCES);
 199         }
 200
 201         /* check permission of setgid */
 202         if (setgid && !(perm & CFS_SETGID_PERM)) {
 203                 CDEBUG(D_SEC, "mdt blocked setgid attempt (%u:%u/%u:%u -> %u) "
 204                        "from %s\n", pud->pud_uid, pud->pud_gid,
 205                        pud->pud_fsuid, pud->pud_fsgid,
 206                        ucred->mu_identity->mi_gid, libcfs_nid2str(peernid));
 207                 GOTO(out, rc = -EACCES);
 208         }
 209
 210         /*
 211          * NB: remote client not allowed to setgroups anyway.
 212          */
 213         if (!remote && perm & CFS_SETGRP_PERM) {
 214                 if (pud->pud_ngroups) {
 215                         /* setgroups for local client */
 216                         ucred->mu_ginfo = groups_alloc(pud->pud_ngroups);
 217                         if (!ucred->mu_ginfo) {
 218                                 CERROR("failed to alloc %d groups\n",
 219                                        pud->pud_ngroups);
 220                                 GOTO(out, rc = -ENOMEM);
 221                         }
 222
 223                         lustre_groups_from_list(ucred->mu_ginfo,
 224                                                 pud->pud_groups);
 225                         lustre_groups_sort(ucred->mu_ginfo);
 226                 } else {
 227                         ucred->mu_ginfo = NULL;
 228                 }
 229         } else {
 230                 ucred->mu_suppgids[0] = -1;
 231                 ucred->mu_suppgids[1] = -1;
 232                 ucred->mu_ginfo = NULL;
 233         }
 234
 235         ucred->mu_uid   = pud->pud_uid;
 236         ucred->mu_gid   = pud->pud_gid;
 237         ucred->mu_fsuid = pud->pud_fsuid;
 238         ucred->mu_fsgid = pud->pud_fsgid;
 239
 240         /* XXX: need to process root_squash here. */
 241         mdt_root_squash(info);
 242
 243         /* remove fs privilege for non-root user. */
 244         if (ucred->mu_fsuid)
 245                 ucred->mu_cap = pud->pud_cap & ~CFS_CAP_FS_MASK;
 246         else
 247                 ucred->mu_cap = pud->pud_cap;
 248         if (remote && !(perm & CFS_RMTOWN_PERM))
 249                 ucred->mu_cap &= ~(CFS_CAP_SYS_RESOURCE_MASK |
 250                                    CFS_CAP_CHOWN_MASK);
 251         ucred->mu_valid = UCRED_NEW;
 252
 253         EXIT;
 254
 255 out:
 256         if (rc) {
 257                 if (ucred->mu_ginfo) {
 258                         groups_free(ucred->mu_ginfo);
 259                         ucred->mu_ginfo = NULL;
 260                 }
 261                 if (ucred->mu_identity) {
 262                         mdt_identity_put(mdt->mdt_identity_cache,
 263                                          ucred->mu_identity);
 264                         ucred->mu_identity = NULL;
 265                 }
 266         }
 267
 268         return rc;
 269 }
 270
 271 int mdt_check_ucred(struct mdt_thread_info *info)
 272 {
 273         struct ptlrpc_request   *req = mdt_info_req(info);
 274         struct mdt_device       *mdt = info->mti_mdt;
 275         struct ptlrpc_user_desc *pud = req->rq_user_desc;
 276         struct md_ucred         *ucred = mdt_ucred(info);
 277         struct md_identity      *identity = NULL;
 278         lnet_nid_t               peernid = req->rq_peer.nid;
 279         __u32                    perm = 0;
 280         __u32                    remote = exp_connect_rmtclient(info->mti_exp);
 281         int                      setuid;
 282         int                      setgid;
 283         int                      rc = 0;
 284
 285         ENTRY;
 286
 287         if ((ucred->mu_valid == UCRED_OLD) || (ucred->mu_valid == UCRED_NEW))
 288                 RETURN(0);
 289
 290         if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc)
 291                 RETURN(0);
 292
 293         /* sanity check: if we use strong authentication, we expect the
 294          * uid which client claimed is true */
 295         if (remote) {
 296                 if (req->rq_auth_mapped_uid == INVALID_UID) {
 297                         CDEBUG(D_SEC, "remote user not mapped, deny access!\n");
 298                         RETURN(-EACCES);
 299                 }
 300
 301                 if (ptlrpc_user_desc_do_idmap(req, pud))
 302                         RETURN(-EACCES);
 303
 304                 if (req->rq_auth_mapped_uid != pud->pud_uid) {
 305                         CDEBUG(D_SEC, "remote client %s: auth/mapped uid %u/%u "
 306                                "while client claims %u:%u/%u:%u\n",
 307                                libcfs_nid2str(peernid), req->rq_auth_uid,
 308                                req->rq_auth_mapped_uid,
 309                                pud->pud_uid, pud->pud_gid,
 310                                pud->pud_fsuid, pud->pud_fsgid);
 311                         RETURN(-EACCES);
 312                 }
 313         } else {
 314                 if (req->rq_auth_uid != pud->pud_uid) {
 315                         CDEBUG(D_SEC, "local client %s: auth uid %u "
 316                                "while client claims %u:%u/%u:%u\n",
 317                                libcfs_nid2str(peernid), req->rq_auth_uid,
 318                                pud->pud_uid, pud->pud_gid,
 319                                pud->pud_fsuid, pud->pud_fsgid);
 320                         RETURN(-EACCES);
 321                 }
 322         }
 323
 324         if (is_identity_get_disabled(mdt->mdt_identity_cache)) {
 325                 if (remote) {
 326                         CDEBUG(D_SEC, "remote client must run with identity_get "
 327                                "enabled!\n");
 328                         RETURN(-EACCES);
 329                 }
 330                 RETURN(0);
 331         }
 332
 333         identity = mdt_identity_get(mdt->mdt_identity_cache, pud->pud_uid);
 334         if (IS_ERR(identity)) {
 335                 if (unlikely(PTR_ERR(identity) == -EREMCHG &&
 336                              !remote)) {
 337                         RETURN(0);
 338                 } else {
 339                         CDEBUG(D_SEC, "Deny access without identity: uid %u\n",
 340                                pud->pud_uid);
 341                         RETURN(-EACCES);
 342                }
 343         }
 344
 345         perm = mdt_identity_get_perm(identity, remote, peernid);
 346         /* find out the setuid/setgid attempt */
 347         setuid = (pud->pud_uid != pud->pud_fsuid);
 348         setgid = (pud->pud_gid != pud->pud_fsgid ||
 349                   pud->pud_gid != identity->mi_gid);
 350
 351         /* check permission of setuid */
 352         if (setuid && !(perm & CFS_SETUID_PERM)) {
 353                 CDEBUG(D_SEC, "mdt blocked setuid attempt (%u -> %u) from %s\n",
 354                        pud->pud_uid, pud->pud_fsuid, libcfs_nid2str(peernid));
 355                 GOTO(out, rc = -EACCES);
 356         }
 357
 358         /* check permission of setgid */
 359         if (setgid && !(perm & CFS_SETGID_PERM)) {
 360                 CDEBUG(D_SEC, "mdt blocked setgid attempt (%u:%u/%u:%u -> %u) "
 361                        "from %s\n", pud->pud_uid, pud->pud_gid,
 362                        pud->pud_fsuid, pud->pud_fsgid, identity->mi_gid,
 363                        libcfs_nid2str(peernid));
 364                 GOTO(out, rc = -EACCES);
 365         }
 366
 367         EXIT;
 368
 369 out:
 370         mdt_identity_put(mdt->mdt_identity_cache, identity);
 371         return rc;
 372 }
 373
 374 static int old_init_ucred(struct mdt_thread_info *info,
 375                           struct mdt_body *body)
 376 {
 377         struct md_ucred *uc = mdt_ucred(info);
 378         struct mdt_device  *mdt = info->mti_mdt;
 379         struct md_identity *identity = NULL;
 380
 381         ENTRY;
 382
 383         uc->mu_valid = UCRED_INVALID;
 384         uc->mu_o_uid = uc->mu_uid = body->uid;
 385         uc->mu_o_gid = uc->mu_gid = body->gid;
 386         uc->mu_o_fsuid = uc->mu_fsuid = body->fsuid;
 387         uc->mu_o_fsgid = uc->mu_fsgid = body->fsgid;
 388         uc->mu_suppgids[0] = body->suppgid;
 389         uc->mu_suppgids[1] = -1;
 390         uc->mu_ginfo = NULL;
 391         if (!is_identity_get_disabled(mdt->mdt_identity_cache)) {
 392                 identity = mdt_identity_get(mdt->mdt_identity_cache,
 393                                             uc->mu_fsuid);
 394                 if (IS_ERR(identity)) {
 395                         if (unlikely(PTR_ERR(identity) == -EREMCHG)) {
 396                                 identity = NULL;
 397                         } else {
 398                                 CDEBUG(D_SEC, "Deny access without identity: "
 399                                        "uid %u\n", uc->mu_fsuid);
 400                                 RETURN(-EACCES);
 401                         }
 402                 }
 403         }
 404         uc->mu_identity = identity;
 405
 406         /* XXX: need to process root_squash here. */
 407         mdt_root_squash(info);
 408
 409         /* remove fs privilege for non-root user. */
 410         if (uc->mu_fsuid)
 411                 uc->mu_cap = body->capability & ~CFS_CAP_FS_MASK;
 412         else
 413                 uc->mu_cap = body->capability;
 414         uc->mu_valid = UCRED_OLD;
 415
 416         RETURN(0);
 417 }
 418
 419 static int old_init_ucred_reint(struct mdt_thread_info *info)
 420 {
 421         struct md_ucred *uc = mdt_ucred(info);
 422         struct mdt_device  *mdt = info->mti_mdt;
 423         struct md_identity *identity = NULL;
 424
 425         ENTRY;
 426
 427         uc->mu_valid = UCRED_INVALID;
 428         uc->mu_o_uid = uc->mu_o_fsuid = uc->mu_uid = uc->mu_fsuid;
 429         uc->mu_o_gid = uc->mu_o_fsgid = uc->mu_gid = uc->mu_fsgid;
 430         uc->mu_ginfo = NULL;
 431         if (!is_identity_get_disabled(mdt->mdt_identity_cache)) {
 432                 identity = mdt_identity_get(mdt->mdt_identity_cache,
 433                                             uc->mu_fsuid);
 434                 if (IS_ERR(identity)) {
 435                         if (unlikely(PTR_ERR(identity) == -EREMCHG)) {
 436                                 identity = NULL;
 437                         } else {
 438                                 CDEBUG(D_SEC, "Deny access without identity: "
 439                                        "uid %u\n", uc->mu_fsuid);
 440                                 RETURN(-EACCES);
 441                         }
 442                 }
 443         }
 444         uc->mu_identity = identity;
 445
 446         /* XXX: need to process root_squash here. */
 447         mdt_root_squash(info);
 448
 449         /* remove fs privilege for non-root user. */
 450         if (uc->mu_fsuid)
 451                 uc->mu_cap &= ~CFS_CAP_FS_MASK;
 452         uc->mu_valid = UCRED_OLD;
 453
 454         RETURN(0);
 455 }
 456
 457 int mdt_init_ucred(struct mdt_thread_info *info, struct mdt_body *body)
 458 {
 459         struct ptlrpc_request *req = mdt_info_req(info);
 460         struct md_ucred       *uc  = mdt_ucred(info);
 461
 462         if ((uc->mu_valid == UCRED_OLD) || (uc->mu_valid == UCRED_NEW))
 463                 return 0;
 464
 465         mdt_exit_ucred(info);
 466
 467         if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc)
 468                 return old_init_ucred(info, body);
 469         else
 470                 return new_init_ucred(info, BODY_INIT, body);
 471 }
 472
 473 int mdt_init_ucred_reint(struct mdt_thread_info *info)
 474 {
 475         struct ptlrpc_request *req = mdt_info_req(info);
 476         struct md_ucred       *uc  = mdt_ucred(info);
 477
 478         if ((uc->mu_valid == UCRED_OLD) || (uc->mu_valid == UCRED_NEW))
 479                 return 0;
 480
 481         mdt_exit_ucred(info);
 482
 483         if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc)
 484                 return old_init_ucred_reint(info);
 485         else
 486                 return new_init_ucred(info, REC_INIT, NULL);
 487 }
 488
 489 /* copied from lov/lov_ea.c, just for debugging, will be removed later */
 490 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm)
 491 {
 492         const struct lov_ost_data_v1 *lod;
 493         int i;
 494         __s16 stripe_count =
 495                 le16_to_cpu(((struct lov_user_md*)lmm)->lmm_stripe_count);
 496
 497         CDEBUG(level, "objid "LPX64", magic 0x%08X, pattern %#X\n",
 498                le64_to_cpu(lmm->lmm_object_id), le32_to_cpu(lmm->lmm_magic),
 499                le32_to_cpu(lmm->lmm_pattern));
 500         CDEBUG(level,"stripe_size=0x%x, stripe_count=0x%x\n",
 501                le32_to_cpu(lmm->lmm_stripe_size),
 502                le32_to_cpu(lmm->lmm_stripe_count));
 503         LASSERT(stripe_count <= (__s16)LOV_MAX_STRIPE_COUNT);
 504         for (i = 0, lod = lmm->lmm_objects; i < stripe_count; i++, lod++) {
 505                 CDEBUG(level, "stripe %u idx %u subobj "LPX64"/"LPX64"\n",
 506                        i, le32_to_cpu(lod->l_ost_idx),
 507                        le64_to_cpu(lod->l_object_gr),
 508                        le64_to_cpu(lod->l_object_id));
 509         }
 510 }
 511
 512 void mdt_shrink_reply(struct mdt_thread_info *info)
 513 {
 514         struct req_capsule *pill = info->mti_pill;
 515         struct mdt_body    *body;
 516         int                md_size;
 517         int                acl_size;
 518         ENTRY;
 519
 520         body = req_capsule_server_get(pill, &RMF_MDT_BODY);
 521         LASSERT(body != NULL);
 522
 523         if (body->valid & (OBD_MD_FLDIREA | OBD_MD_FLEASIZE | OBD_MD_LINKNAME))
 524                 md_size = body->eadatasize;
 525         else
 526                 md_size = 0;
 527
 528         acl_size = body->aclsize;
 529
 530         /* this replay - not send info to client */
 531         if (info->mti_spec.no_create == 1) {
 532                 md_size = 0;
 533                 acl_size = 0;
 534         }
 535
 536         CDEBUG(D_INFO, "Shrink to md_size = %d cookie/acl_size = %d"
 537                         " MDSCAPA = "LPX64", OSSCAPA = "LPX64"\n",
 538                         md_size, acl_size,
 539                         body->valid & OBD_MD_FLMDSCAPA,
 540                         body->valid & OBD_MD_FLOSSCAPA);
 541 /*
 542             &RMF_MDT_BODY,
 543             &RMF_MDT_MD,
 544             &RMF_ACL, or &RMF_LOGCOOKIES
 545 (optional)  &RMF_CAPA1,
 546 (optional)  &RMF_CAPA2,
 547 (optional)  something else
 548 */
 549
 550         if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
 551                 req_capsule_shrink(pill, &RMF_MDT_MD, md_size,
 552                                    RCL_SERVER);
 553         if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
 554                 req_capsule_shrink(pill, &RMF_ACL, acl_size, RCL_SERVER);
 555         else if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
 556                 req_capsule_shrink(pill, &RMF_LOGCOOKIES,
 557                                    acl_size, RCL_SERVER);
 558
 559         if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_SERVER) &&
 560             !(body->valid & OBD_MD_FLMDSCAPA))
 561                 req_capsule_shrink(pill, &RMF_CAPA1, 0, RCL_SERVER);
 562
 563         if (req_capsule_has_field(pill, &RMF_CAPA2, RCL_SERVER) &&
 564             !(body->valid & OBD_MD_FLOSSCAPA))
 565                 req_capsule_shrink(pill, &RMF_CAPA2, 0, RCL_SERVER);
 566
 567         /*
 568          * Some more field should be shrinked if needed.
 569          * This should be done by those who added fields to reply message.
 570          */
 571         EXIT;
 572 }
 573
 574
 575 /* if object is dying, pack the lov/llog data,
 576  * parameter info->mti_attr should be valid at this point! */
 577 int mdt_handle_last_unlink(struct mdt_thread_info *info, struct mdt_object *mo,
 578                            const struct md_attr *ma)
 579 {
 580         struct mdt_body       *repbody;
 581         const struct lu_attr *la = &ma->ma_attr;
 582         int rc;
 583         ENTRY;
 584
 585         repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
 586         LASSERT(repbody != NULL);
 587
 588         if (ma->ma_valid & MA_INODE)
 589                 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(mo));
 590
 591         if (ma->ma_valid & MA_LOV) {
 592                 __u32 mode;
 593
 594                 if (mdt_object_exists(mo) < 0)
 595                         /* If it is a remote object, and we do not retrieve
 596                          * EA back unlink reg file*/
 597                         mode = S_IFREG;
 598                 else
 599                         mode = lu_object_attr(&mo->mot_obj.mo_lu);
 600
 601                 LASSERT(ma->ma_lmm_size);
 602                 mdt_dump_lmm(D_INFO, ma->ma_lmm);
 603                 repbody->eadatasize = ma->ma_lmm_size;
 604                 if (S_ISREG(mode))
 605                         repbody->valid |= OBD_MD_FLEASIZE;
 606                 else if (S_ISDIR(mode))
 607                         repbody->valid |= OBD_MD_FLDIREA;
 608                 else
 609                         LBUG();
 610         }
 611
 612         if (ma->ma_cookie_size && (ma->ma_valid & MA_COOKIE)) {
 613                 repbody->aclsize = ma->ma_cookie_size;
 614                 repbody->valid |= OBD_MD_FLCOOKIE;
 615         }
 616
 617         if (info->mti_mdt->mdt_opts.mo_oss_capa &&
 618             info->mti_exp->exp_connect_flags & OBD_CONNECT_OSS_CAPA &&
 619             repbody->valid & OBD_MD_FLEASIZE) {
 620                 struct lustre_capa *capa;
 621
 622                 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
 623                 LASSERT(capa);
 624                 capa->lc_opc = CAPA_OPC_OSS_DESTROY;
 625                 rc = mo_capa_get(info->mti_env, mdt_object_child(mo), capa, 0);
 626                 if (rc)
 627                         RETURN(rc);
 628
 629                 repbody->valid |= OBD_MD_FLOSSCAPA;
 630         }
 631
 632         RETURN(0);
 633 }
 634
 635 static inline unsigned int attr_unpack(__u64 sa_valid) {
 636         unsigned int ia_valid = 0;
 637
 638         if (sa_valid & MDS_ATTR_MODE)
 639                 ia_valid |= ATTR_MODE;
 640         if (sa_valid & MDS_ATTR_UID)
 641                 ia_valid |= ATTR_UID;
 642         if (sa_valid & MDS_ATTR_GID)
 643                 ia_valid |= ATTR_GID;
 644         if (sa_valid & MDS_ATTR_SIZE)
 645                 ia_valid |= ATTR_SIZE;
 646         if (sa_valid & MDS_ATTR_ATIME)
 647                 ia_valid |= ATTR_ATIME;
 648         if (sa_valid & MDS_ATTR_MTIME)
 649                 ia_valid |= ATTR_MTIME;
 650         if (sa_valid & MDS_ATTR_CTIME)
 651                 ia_valid |= ATTR_CTIME;
 652         if (sa_valid & MDS_ATTR_ATIME_SET)
 653                 ia_valid |= ATTR_ATIME_SET;
 654         if (sa_valid & MDS_ATTR_MTIME_SET)
 655                 ia_valid |= ATTR_MTIME_SET;
 656         if (sa_valid & MDS_ATTR_FORCE)
 657                 ia_valid |= ATTR_FORCE;
 658         if (sa_valid & MDS_ATTR_ATTR_FLAG)
 659                 ia_valid |= ATTR_ATTR_FLAG;
 660         if (sa_valid & MDS_ATTR_KILL_SUID)
 661                 ia_valid |=  ATTR_KILL_SUID;
 662         if (sa_valid & MDS_ATTR_KILL_SGID)
 663                 ia_valid |= ATTR_KILL_SGID;
 664         if (sa_valid & MDS_ATTR_CTIME_SET)
 665                 ia_valid |= ATTR_CTIME_SET;
 666         if (sa_valid & MDS_ATTR_FROM_OPEN)
 667                 ia_valid |= ATTR_FROM_OPEN;
 668         if (sa_valid & MDS_ATTR_BLOCKS)
 669                 ia_valid |= ATTR_BLOCKS;
 670         if (sa_valid & MDS_OPEN_OWNEROVERRIDE)
 671                 ia_valid |= MDS_OPEN_OWNEROVERRIDE;
 672         return ia_valid;
 673 }
 674
 675 static __u64 mdt_attr_valid_xlate(__u64 in, struct mdt_reint_record *rr,
 676                                   struct md_attr *ma)
 677 {
 678         __u64 out;
 679
 680         out = 0;
 681         if (in & ATTR_MODE)
 682                 out |= LA_MODE;
 683         if (in & ATTR_UID)
 684                 out |= LA_UID;
 685         if (in & ATTR_GID)
 686                 out |= LA_GID;
 687         if (in & ATTR_SIZE)
 688                 out |= LA_SIZE;
 689         if (in & ATTR_BLOCKS)
 690                 out |= LA_BLOCKS;
 691
 692         if (in & ATTR_FROM_OPEN)
 693                 rr->rr_flags |= MRF_SETATTR_LOCKED;
 694
 695         if (in & ATTR_ATIME_SET)
 696                 out |= LA_ATIME;
 697
 698         if (in & ATTR_CTIME_SET)
 699                 out |= LA_CTIME;
 700
 701         if (in & ATTR_MTIME_SET)
 702                 out |= LA_MTIME;
 703
 704         if (in & ATTR_ATTR_FLAG)
 705                 out |= LA_FLAGS;
 706
 707         if (in & MDS_OPEN_OWNEROVERRIDE)
 708                 ma->ma_attr_flags |= MDS_OPEN_OWNEROVERRIDE;
 709
 710         if (in & (ATTR_KILL_SUID|ATTR_KILL_SGID))
 711                 ma->ma_attr_flags |= MDS_PERM_BYPASS;
 712
 713         /*XXX need ATTR_RAW?*/
 714         in &= ~(ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_SIZE|ATTR_BLOCKS|
 715                 ATTR_ATIME|ATTR_MTIME|ATTR_CTIME|ATTR_FROM_OPEN|
 716                 ATTR_ATIME_SET|ATTR_CTIME_SET|ATTR_MTIME_SET|
 717                 ATTR_ATTR_FLAG|ATTR_RAW|MDS_OPEN_OWNEROVERRIDE|
 718                 ATTR_FORCE|ATTR_KILL_SUID);
 719         if (in != 0)
 720                 CERROR("Unknown attr bits: %#llx\n", in);
 721         return out;
 722 }
 723 /* unpacking */
 724
 725 static int mdt_setattr_unpack_rec(struct mdt_thread_info *info)
 726 {
 727         struct md_ucred         *uc  = mdt_ucred(info);
 728         struct md_attr          *ma = &info->mti_attr;
 729         struct lu_attr          *la = &ma->ma_attr;
 730         struct req_capsule      *pill = info->mti_pill;
 731         struct mdt_reint_record *rr = &info->mti_rr;
 732         struct mdt_rec_setattr  *rec;
 733         ENTRY;
 734
 735         CLASSERT(sizeof(struct mdt_rec_setattr)== sizeof(struct mdt_rec_reint));
 736         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 737         if (rec == NULL)
 738                 RETURN(-EFAULT);
 739
 740         uc->mu_fsuid = rec->sa_fsuid;
 741         uc->mu_fsgid = rec->sa_fsgid;
 742         uc->mu_cap   = rec->sa_cap;
 743         uc->mu_suppgids[0] = rec->sa_suppgid;
 744         uc->mu_suppgids[1] = -1;
 745
 746         rr->rr_fid1 = &rec->sa_fid;
 747         la->la_valid = mdt_attr_valid_xlate(attr_unpack(rec->sa_valid), rr, ma);
 748         la->la_mode  = rec->sa_mode;
 749         la->la_flags = rec->sa_attr_flags;
 750         la->la_uid   = rec->sa_uid;
 751         la->la_gid   = rec->sa_gid;
 752         la->la_size  = rec->sa_size;
 753         la->la_blocks = rec->sa_blocks;
 754         la->la_ctime = rec->sa_ctime;
 755         la->la_atime = rec->sa_atime;
 756         la->la_mtime = rec->sa_mtime;
 757         ma->ma_valid = MA_INODE;
 758
 759         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
 760                 mdt_set_capainfo(info, 0, rr->rr_fid1,
 761                                  req_capsule_client_get(pill, &RMF_CAPA1));
 762
 763         RETURN(0);
 764 }
 765
 766 static int mdt_epoch_unpack(struct mdt_thread_info *info)
 767 {
 768         struct req_capsule *pill = info->mti_pill;
 769         ENTRY;
 770
 771         if (req_capsule_get_size(pill, &RMF_MDT_EPOCH, RCL_CLIENT))
 772                 info->mti_epoch = req_capsule_client_get(pill, &RMF_MDT_EPOCH);
 773         else
 774                 info->mti_epoch = NULL;
 775         RETURN(info->mti_epoch == NULL ? -EFAULT : 0);
 776 }
 777
 778 static inline int mdt_dlmreq_unpack(struct mdt_thread_info *info) {
 779         struct req_capsule      *pill = info->mti_pill;
 780
 781         if (req_capsule_get_size(pill, &RMF_DLM_REQ, RCL_CLIENT)) {
 782                 info->mti_dlm_req = req_capsule_client_get(pill, &RMF_DLM_REQ);
 783                 if (info->mti_dlm_req == NULL)
 784                         RETURN(-EFAULT);
 785         }
 786
 787         RETURN(0);
 788 }
 789
 790 static int mdt_setattr_unpack(struct mdt_thread_info *info)
 791 {
 792         struct md_attr          *ma = &info->mti_attr;
 793         struct req_capsule      *pill = info->mti_pill;
 794         int rc;
 795         ENTRY;
 796
 797         rc = mdt_setattr_unpack_rec(info);
 798         if (rc)
 799                 RETURN(rc);
 800
 801         /* Epoch may be absent */
 802         mdt_epoch_unpack(info);
 803
 804         ma->ma_lmm_size = req_capsule_get_size(pill, &RMF_EADATA, RCL_CLIENT);
 805         if (ma->ma_lmm_size) {
 806                 ma->ma_lmm = req_capsule_client_get(pill, &RMF_EADATA);
 807                 ma->ma_valid |= MA_LOV;
 808         }
 809
 810         ma->ma_cookie_size = req_capsule_get_size(pill, &RMF_LOGCOOKIES,
 811                                                   RCL_CLIENT);
 812         if (ma->ma_cookie_size) {
 813                 ma->ma_cookie = req_capsule_client_get(pill, &RMF_LOGCOOKIES);
 814                 ma->ma_valid |= MA_COOKIE;
 815         }
 816
 817         rc = mdt_dlmreq_unpack(info);
 818         RETURN(rc);
 819 }
 820
 821 int mdt_close_unpack(struct mdt_thread_info *info)
 822 {
 823         int rc;
 824         ENTRY;
 825
 826         rc = mdt_epoch_unpack(info);
 827         if (rc)
 828                 RETURN(rc);
 829
 830         RETURN(mdt_setattr_unpack_rec(info));
 831 }
 832
 833 static int mdt_create_unpack(struct mdt_thread_info *info)
 834 {
 835         struct md_ucred         *uc  = mdt_ucred(info);
 836         struct mdt_rec_create   *rec;
 837         struct lu_attr          *attr = &info->mti_attr.ma_attr;
 838         struct mdt_reint_record *rr = &info->mti_rr;
 839         struct req_capsule      *pill = info->mti_pill;
 840         struct md_op_spec       *sp = &info->mti_spec;
 841         int rc;
 842         ENTRY;
 843
 844         CLASSERT(sizeof(struct mdt_rec_create) == sizeof(struct mdt_rec_reint));
 845         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 846         if (rec == NULL)
 847                 RETURN(-EFAULT);
 848
 849         uc->mu_fsuid = rec->cr_fsuid;
 850         uc->mu_fsgid = rec->cr_fsgid;
 851         uc->mu_cap   = rec->cr_cap;
 852         uc->mu_suppgids[0] = rec->cr_suppgid1;
 853         uc->mu_suppgids[1] = -1;
 854
 855         rr->rr_fid1 = &rec->cr_fid1;
 856         rr->rr_fid2 = &rec->cr_fid2;
 857         attr->la_mode = rec->cr_mode;
 858         attr->la_rdev  = rec->cr_rdev;
 859         attr->la_uid   = rec->cr_fsuid;
 860         attr->la_gid   = rec->cr_fsgid;
 861         attr->la_ctime = rec->cr_time;
 862         attr->la_mtime = rec->cr_time;
 863         attr->la_atime = rec->cr_time;
 864         attr->la_valid = LA_MODE | LA_RDEV | LA_UID | LA_GID |
 865                          LA_CTIME | LA_MTIME | LA_ATIME;
 866         memset(&sp->u, 0, sizeof(sp->u));
 867         sp->sp_cr_flags = rec->cr_flags;
 868         sp->sp_ck_split = !!(rec->cr_bias & MDS_CHECK_SPLIT);
 869         info->mti_cross_ref = !!(rec->cr_bias & MDS_CROSS_REF);
 870
 871         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
 872                 mdt_set_capainfo(info, 0, rr->rr_fid1,
 873                                  req_capsule_client_get(pill, &RMF_CAPA1));
 874         mdt_set_capainfo(info, 1, rr->rr_fid2, BYPASS_CAPA);
 875
 876         if (!info->mti_cross_ref) {
 877                 rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
 878                 rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
 879                 LASSERT(rr->rr_name && rr->rr_namelen > 0);
 880         } else {
 881                 rr->rr_name = NULL;
 882                 rr->rr_namelen = 0;
 883         }
 884
 885 #ifdef CONFIG_FS_POSIX_ACL
 886         if (sp->sp_cr_flags & MDS_CREATE_RMT_ACL) {
 887                 if (S_ISDIR(attr->la_mode))
 888                         sp->u.sp_pfid = rr->rr_fid1;
 889                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_RMT_ACL);
 890                 LASSERT(req_capsule_field_present(pill, &RMF_EADATA,
 891                                                   RCL_CLIENT));
 892                 sp->u.sp_ea.eadata = req_capsule_client_get(pill, &RMF_EADATA);
 893                 sp->u.sp_ea.eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
 894                                                              RCL_CLIENT);
 895                 sp->u.sp_ea.fid = rr->rr_fid1;
 896                 RETURN(0);
 897         }
 898 #endif
 899         if (S_ISDIR(attr->la_mode)) {
 900                 /* pass parent fid for cross-ref cases */
 901                 sp->u.sp_pfid = rr->rr_fid1;
 902                 if (sp->sp_cr_flags & MDS_CREATE_SLAVE_OBJ) {
 903                         /* create salve object req, need
 904                          * unpack split ea here
 905                          */
 906                        req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_SLAVE);
 907                        LASSERT(req_capsule_field_present(pill, &RMF_EADATA,
 908                                                          RCL_CLIENT));
 909                        sp->u.sp_ea.eadata = req_capsule_client_get(pill,
 910                                                                    &RMF_EADATA);
 911                        sp->u.sp_ea.eadatalen = req_capsule_get_size(pill,
 912                                                                     &RMF_EADATA,
 913                                                                     RCL_CLIENT);
 914                        sp->u.sp_ea.fid = rr->rr_fid1;
 915                        RETURN(0);
 916                 }
 917                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_RMT_ACL);
 918         } else if (S_ISLNK(attr->la_mode)) {
 919                 const char *tgt = NULL;
 920
 921                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_SYM);
 922                 if (req_capsule_get_size(pill, &RMF_SYMTGT, RCL_CLIENT)) {
 923                         tgt = req_capsule_client_get(pill, &RMF_SYMTGT);
 924                         sp->u.sp_symname = tgt;
 925                 }
 926                 if (tgt == NULL)
 927                         RETURN(-EFAULT);
 928         } else {
 929                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_RMT_ACL);
 930         }
 931         rc = mdt_dlmreq_unpack(info);
 932         RETURN(rc);
 933 }
 934
 935 static int mdt_link_unpack(struct mdt_thread_info *info)
 936 {
 937         struct md_ucred         *uc  = mdt_ucred(info);
 938         struct mdt_rec_link     *rec;
 939         struct lu_attr          *attr = &info->mti_attr.ma_attr;
 940         struct mdt_reint_record *rr = &info->mti_rr;
 941         struct req_capsule      *pill = info->mti_pill;
 942         int rc;
 943         ENTRY;
 944
 945         CLASSERT(sizeof(struct mdt_rec_link) == sizeof(struct mdt_rec_reint));
 946         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 947         if (rec == NULL)
 948                 RETURN(-EFAULT);
 949
 950         uc->mu_fsuid = rec->lk_fsuid;
 951         uc->mu_fsgid = rec->lk_fsgid;
 952         uc->mu_cap   = rec->lk_cap;
 953         uc->mu_suppgids[0] = rec->lk_suppgid1;
 954         uc->mu_suppgids[1] = rec->lk_suppgid2;
 955
 956         attr->la_uid = rec->lk_fsuid;
 957         attr->la_gid = rec->lk_fsgid;
 958         rr->rr_fid1 = &rec->lk_fid1;
 959         rr->rr_fid2 = &rec->lk_fid2;
 960         attr->la_ctime = rec->lk_time;
 961         attr->la_mtime = rec->lk_time;
 962         attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME;
 963
 964         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
 965                 mdt_set_capainfo(info, 0, rr->rr_fid1,
 966                                  req_capsule_client_get(pill, &RMF_CAPA1));
 967         if (req_capsule_get_size(pill, &RMF_CAPA2, RCL_CLIENT))
 968                 mdt_set_capainfo(info, 1, rr->rr_fid2,
 969                                  req_capsule_client_get(pill, &RMF_CAPA2));
 970
 971         info->mti_spec.sp_ck_split = !!(rec->lk_bias & MDS_CHECK_SPLIT);
 972         info->mti_cross_ref = !!(rec->lk_bias & MDS_CROSS_REF);
 973         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
 974         if (rr->rr_name == NULL)
 975                 RETURN(-EFAULT);
 976         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
 977         if (!info->mti_cross_ref)
 978                 LASSERT(rr->rr_namelen > 0);
 979
 980         rc = mdt_dlmreq_unpack(info);
 981         RETURN(rc);
 982 }
 983
 984 static int mdt_unlink_unpack(struct mdt_thread_info *info)
 985 {
 986         struct md_ucred         *uc  = mdt_ucred(info);
 987         struct mdt_rec_unlink   *rec;
 988         struct md_attr          *ma = &info->mti_attr;
 989         struct lu_attr          *attr = &info->mti_attr.ma_attr;
 990         struct mdt_reint_record *rr = &info->mti_rr;
 991         struct req_capsule      *pill = info->mti_pill;
 992         int rc;
 993         ENTRY;
 994
 995         CLASSERT(sizeof(struct mdt_rec_unlink) == sizeof(struct mdt_rec_reint));
 996         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 997         if (rec == NULL)
 998                 RETURN(-EFAULT);
 999
1000         uc->mu_fsuid = rec->ul_fsuid;
1001         uc->mu_fsgid = rec->ul_fsgid;
1002         uc->mu_cap   = rec->ul_cap;
1003         uc->mu_suppgids[0] = rec->ul_suppgid1;
1004         uc->mu_suppgids[1] = -1;
1005
1006         attr->la_uid = rec->ul_fsuid;
1007         attr->la_gid = rec->ul_fsgid;
1008         rr->rr_fid1 = &rec->ul_fid1;
1009         rr->rr_fid2 = &rec->ul_fid2;
1010         attr->la_ctime = rec->ul_time;
1011         attr->la_mtime = rec->ul_time;
1012         attr->la_mode  = rec->ul_mode;
1013         attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME | LA_MODE;
1014
1015         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
1016                 mdt_set_capainfo(info, 0, rr->rr_fid1,
1017                                  req_capsule_client_get(pill, &RMF_CAPA1));
1018
1019         info->mti_cross_ref = !!(rec->ul_bias & MDS_CROSS_REF);
1020         if (!info->mti_cross_ref) {
1021                 rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1022                 rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1023                 if (rr->rr_name == NULL || rr->rr_namelen == 0)
1024                         RETURN(-EFAULT);
1025         } else {
1026                 rr->rr_name = NULL;
1027                 rr->rr_namelen = 0;
1028         }
1029         info->mti_spec.sp_ck_split = !!(rec->ul_bias & MDS_CHECK_SPLIT);
1030         if (rec->ul_bias & MDS_VTX_BYPASS)
1031                 ma->ma_attr_flags |= MDS_VTX_BYPASS;
1032         else
1033                 ma->ma_attr_flags &= ~MDS_VTX_BYPASS;
1034
1035         if (lustre_msg_get_flags(mdt_info_req(info)->rq_reqmsg) & MSG_REPLAY)
1036                 info->mti_spec.no_create = 1;
1037
1038         rc = mdt_dlmreq_unpack(info);
1039         RETURN(rc);
1040 }
1041
1042 static int mdt_rename_unpack(struct mdt_thread_info *info)
1043 {
1044         struct md_ucred         *uc = mdt_ucred(info);
1045         struct mdt_rec_rename   *rec;
1046         struct md_attr          *ma = &info->mti_attr;
1047         struct lu_attr          *attr = &info->mti_attr.ma_attr;
1048         struct mdt_reint_record *rr = &info->mti_rr;
1049         struct req_capsule      *pill = info->mti_pill;
1050         int rc;
1051         ENTRY;
1052
1053         CLASSERT(sizeof(struct mdt_rec_rename) == sizeof(struct mdt_rec_reint));
1054         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1055         if (rec == NULL)
1056                 RETURN(-EFAULT);
1057
1058         uc->mu_fsuid = rec->rn_fsuid;
1059         uc->mu_fsgid = rec->rn_fsgid;
1060         uc->mu_cap   = rec->rn_cap;
1061         uc->mu_suppgids[0] = rec->rn_suppgid1;
1062         uc->mu_suppgids[1] = rec->rn_suppgid2;
1063
1064         attr->la_uid = rec->rn_fsuid;
1065         attr->la_gid = rec->rn_fsgid;
1066         rr->rr_fid1 = &rec->rn_fid1;
1067         rr->rr_fid2 = &rec->rn_fid2;
1068         attr->la_ctime = rec->rn_time;
1069         attr->la_mtime = rec->rn_time;
1070         /* rename_tgt contains the mode already */
1071         attr->la_mode = rec->rn_mode;
1072         attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME | LA_MODE;
1073
1074         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
1075                 mdt_set_capainfo(info, 0, rr->rr_fid1,
1076                                  req_capsule_client_get(pill, &RMF_CAPA1));
1077         if (req_capsule_get_size(pill, &RMF_CAPA2, RCL_CLIENT))
1078                 mdt_set_capainfo(info, 1, rr->rr_fid2,
1079                                  req_capsule_client_get(pill, &RMF_CAPA2));
1080
1081         info->mti_spec.sp_ck_split = !!(rec->rn_bias & MDS_CHECK_SPLIT);
1082         info->mti_cross_ref = !!(rec->rn_bias & MDS_CROSS_REF);
1083         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1084         rr->rr_tgt = req_capsule_client_get(pill, &RMF_SYMTGT);
1085         if (rr->rr_name == NULL || rr->rr_tgt == NULL)
1086                 RETURN(-EFAULT);
1087         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1088         rr->rr_tgtlen = req_capsule_get_size(pill, &RMF_SYMTGT, RCL_CLIENT) - 1;
1089         if (!info->mti_cross_ref)
1090                 LASSERT(rr->rr_namelen > 0 && rr->rr_tgtlen > 0);
1091         if (rec->rn_bias & MDS_VTX_BYPASS)
1092                 ma->ma_attr_flags |= MDS_VTX_BYPASS;
1093         else
1094                 ma->ma_attr_flags &= ~MDS_VTX_BYPASS;
1095
1096         rc = mdt_dlmreq_unpack(info);
1097         RETURN(rc);
1098 }
1099
1100 static int mdt_open_unpack(struct mdt_thread_info *info)
1101 {
1102         struct md_ucred         *uc = mdt_ucred(info);
1103         struct mdt_rec_create   *rec;
1104         struct lu_attr          *attr = &info->mti_attr.ma_attr;
1105         struct req_capsule      *pill = info->mti_pill;
1106         struct mdt_reint_record *rr   = &info->mti_rr;
1107         struct ptlrpc_request   *req  = mdt_info_req(info);
1108         struct md_op_spec       *sp   = &info->mti_spec;
1109         ENTRY;
1110
1111         CLASSERT(sizeof(struct mdt_rec_create) == sizeof(struct mdt_rec_reint));
1112         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1113         if (rec == NULL)
1114                 RETURN(-EFAULT);
1115
1116         uc->mu_fsuid = rec->cr_fsuid;
1117         uc->mu_fsgid = rec->cr_fsgid;
1118         uc->mu_cap   = rec->cr_cap;
1119         uc->mu_suppgids[0] = rec->cr_suppgid1;
1120         uc->mu_suppgids[1] = rec->cr_suppgid2;
1121
1122         rr->rr_fid1   = &rec->cr_fid1;
1123         rr->rr_fid2   = &rec->cr_fid2;
1124         rr->rr_handle = &rec->cr_old_handle;
1125         attr->la_mode = rec->cr_mode;
1126         attr->la_rdev  = rec->cr_rdev;
1127         attr->la_uid   = rec->cr_fsuid;
1128         attr->la_gid   = rec->cr_fsgid;
1129         attr->la_ctime = rec->cr_time;
1130         attr->la_mtime = rec->cr_time;
1131         attr->la_atime = rec->cr_time;
1132         attr->la_valid = LA_MODE  | LA_RDEV  | LA_UID   | LA_GID |
1133                          LA_CTIME | LA_MTIME | LA_ATIME;
1134         memset(&info->mti_spec.u, 0, sizeof(info->mti_spec.u));
1135         info->mti_spec.sp_cr_flags = rec->cr_flags;
1136         info->mti_replayepoch = rec->cr_ioepoch;
1137
1138         info->mti_spec.sp_ck_split = !!(rec->cr_bias & MDS_CHECK_SPLIT);
1139         info->mti_cross_ref = !!(rec->cr_bias & MDS_CROSS_REF);
1140
1141         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
1142                 mdt_set_capainfo(info, 0, rr->rr_fid1,
1143                                  req_capsule_client_get(pill, &RMF_CAPA1));
1144         if ((lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) &&
1145             (req_capsule_get_size(pill, &RMF_CAPA2, RCL_CLIENT))) {
1146 #if 0
1147                 mdt_set_capainfo(info, 1, rr->rr_fid2,
1148                                  req_capsule_client_get(pill, &RMF_CAPA2));
1149 #else
1150                 /*
1151                  * FIXME: capa in replay open request might have expired,
1152                  * bypass capa check. Security hole?
1153                  */
1154                 mdt_set_capainfo(info, 0, rr->rr_fid1, BYPASS_CAPA);
1155                 mdt_set_capainfo(info, 1, rr->rr_fid2, BYPASS_CAPA);
1156 #endif
1157         }
1158
1159         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1160         if (rr->rr_name == NULL)
1161                 RETURN(-EFAULT);
1162         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1163
1164         sp->u.sp_ea.eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
1165                                                      RCL_CLIENT);
1166         if (sp->u.sp_ea.eadatalen) {
1167                 sp->u.sp_ea.eadata = req_capsule_client_get(pill, &RMF_EADATA);
1168                 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
1169                         sp->no_create = 1;
1170         }
1171
1172         RETURN(0);
1173 }
1174
1175 static int mdt_setxattr_unpack(struct mdt_thread_info *info)
1176 {
1177         struct mdt_reint_record   *rr   = &info->mti_rr;
1178         struct md_ucred           *uc   = mdt_ucred(info);
1179         struct lu_attr            *attr = &info->mti_attr.ma_attr;
1180         struct req_capsule        *pill = info->mti_pill;
1181         struct mdt_rec_setxattr   *rec;
1182         ENTRY;
1183
1184
1185         CLASSERT(sizeof(struct mdt_rec_setxattr) ==
1186                          sizeof(struct mdt_rec_reint));
1187
1188         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1189         if (rec == NULL)
1190                 RETURN(-EFAULT);
1191
1192         uc->mu_fsuid  = rec->sx_fsuid;
1193         uc->mu_fsgid  = rec->sx_fsgid;
1194         uc->mu_cap    = rec->sx_cap;
1195         uc->mu_suppgids[0] = rec->sx_suppgid1;
1196         uc->mu_suppgids[1] = -1;
1197
1198         rr->rr_opcode = rec->sx_opcode;
1199         rr->rr_fid1   = &rec->sx_fid;
1200         attr->la_valid = rec->sx_valid;
1201         attr->la_ctime = rec->sx_time;
1202         attr->la_size = rec->sx_size;
1203         attr->la_flags = rec->sx_flags;
1204
1205         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
1206                 mdt_set_capainfo(info, 0, rr->rr_fid1,
1207                                  req_capsule_client_get(pill, &RMF_CAPA1));
1208         else
1209                 mdt_set_capainfo(info, 0, rr->rr_fid1, BYPASS_CAPA);
1210
1211         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1212         if (rr->rr_name == NULL)
1213                 RETURN(-EFAULT);
1214         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1215         LASSERT(rr->rr_namelen > 0);
1216
1217         rr->rr_eadatalen = req_capsule_get_size(pill, &RMF_EADATA, RCL_CLIENT);
1218         if (rr->rr_eadatalen > 0) {
1219                 rr->rr_eadata = req_capsule_client_get(pill, &RMF_EADATA);
1220                 if (rr->rr_eadata == NULL)
1221                         RETURN(-EFAULT);
1222         }
1223
1224         RETURN(0);
1225 }
1226
1227
1228 typedef int (*reint_unpacker)(struct mdt_thread_info *info);
1229
1230 static reint_unpacker mdt_reint_unpackers[REINT_MAX] = {
1231         [REINT_SETATTR]  = mdt_setattr_unpack,
1232         [REINT_CREATE]   = mdt_create_unpack,
1233         [REINT_LINK]     = mdt_link_unpack,
1234         [REINT_UNLINK]   = mdt_unlink_unpack,
1235         [REINT_RENAME]   = mdt_rename_unpack,
1236         [REINT_OPEN]     = mdt_open_unpack,
1237         [REINT_SETXATTR] = mdt_setxattr_unpack
1238 };
1239
1240 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op)
1241 {
1242         int rc;
1243         ENTRY;
1244
1245         memset(&info->mti_rr, 0, sizeof(info->mti_rr));
1246         if (op < REINT_MAX && mdt_reint_unpackers[op] != NULL) {
1247                 info->mti_rr.rr_opcode = op;
1248                 rc = mdt_reint_unpackers[op](info);
1249         } else {
1250                 CERROR("Unexpected opcode %d\n", op);
1251                 rc = -EFAULT;
1252         }
1253         RETURN(rc);
1254 }