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_export_data  *med = mdt_req2med(req);
  96         struct mdt_device       *mdt = info->mti_mdt;
  97         struct ptlrpc_user_desc *pud = req->rq_user_desc;
  98         struct md_ucred         *ucred = mdt_ucred(info);
  99         lnet_nid_t               peernid = req->rq_peer.nid;
 100         __u32                    perm = 0;
 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 (med->med_rmtclient) {
 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 (med->med_rmtclient) {
 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                                      !med->med_rmtclient)) {
 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                                                      med->med_rmtclient,
 185                                                      peernid);
 186                 }
 187         }
 188
 189         /* find out the setuid/setgid attempt */
 190         setuid = (pud->pud_uid != pud->pud_fsuid);
 191         setgid = ((pud->pud_gid != pud->pud_fsgid) ||
 192                   (ucred->mu_identity &&
 193                   (pud->pud_gid != ucred->mu_identity->mi_gid)));
 194
 195         /* check permission of setuid */
 196         if (setuid && !(perm & CFS_SETUID_PERM)) {
 197                 CDEBUG(D_SEC, "mdt blocked setuid attempt (%u -> %u) from %s\n",
 198                        pud->pud_uid, pud->pud_fsuid, libcfs_nid2str(peernid));
 199                 GOTO(out, rc = -EACCES);
 200         }
 201
 202         /* check permission of setgid */
 203         if (setgid && !(perm & CFS_SETGID_PERM)) {
 204                 CDEBUG(D_SEC, "mdt blocked setgid attempt (%u:%u/%u:%u -> %u) "
 205                        "from %s\n", pud->pud_uid, pud->pud_gid,
 206                        pud->pud_fsuid, pud->pud_fsgid,
 207                        ucred->mu_identity->mi_gid, libcfs_nid2str(peernid));
 208                 GOTO(out, rc = -EACCES);
 209         }
 210
 211         /*
 212          * NB: remote client not allowed to setgroups anyway.
 213          */
 214         if (!med->med_rmtclient && perm & CFS_SETGRP_PERM) {
 215                 if (pud->pud_ngroups) {
 216                         /* setgroups for local client */
 217                         ucred->mu_ginfo = groups_alloc(pud->pud_ngroups);
 218                         if (!ucred->mu_ginfo) {
 219                                 CERROR("failed to alloc %d groups\n",
 220                                        pud->pud_ngroups);
 221                                 GOTO(out, rc = -ENOMEM);
 222                         }
 223
 224                         lustre_groups_from_list(ucred->mu_ginfo,
 225                                                 pud->pud_groups);
 226                         lustre_groups_sort(ucred->mu_ginfo);
 227                 } else {
 228                         ucred->mu_ginfo = NULL;
 229                 }
 230         } else {
 231                 ucred->mu_suppgids[0] = -1;
 232                 ucred->mu_suppgids[1] = -1;
 233                 ucred->mu_ginfo = NULL;
 234         }
 235
 236         ucred->mu_uid   = pud->pud_uid;
 237         ucred->mu_gid   = pud->pud_gid;
 238         ucred->mu_fsuid = pud->pud_fsuid;
 239         ucred->mu_fsgid = pud->pud_fsgid;
 240
 241         /* XXX: need to process root_squash here. */
 242         mdt_root_squash(info);
 243
 244         /* remove fs privilege for non-root user */
 245         if (ucred->mu_fsuid)
 246                 ucred->mu_cap = pud->pud_cap & ~CFS_CAP_FS_MASK;
 247         else
 248                 ucred->mu_cap = pud->pud_cap;
 249         ucred->mu_valid = UCRED_NEW;
 250
 251         EXIT;
 252
 253 out:
 254         if (rc) {
 255                 if (ucred->mu_ginfo) {
 256                         groups_free(ucred->mu_ginfo);
 257                         ucred->mu_ginfo = NULL;
 258                 }
 259                 if (ucred->mu_identity) {
 260                         mdt_identity_put(mdt->mdt_identity_cache,
 261                                          ucred->mu_identity);
 262                         ucred->mu_identity = NULL;
 263                 }
 264         }
 265
 266         return rc;
 267 }
 268
 269 int mdt_check_ucred(struct mdt_thread_info *info)
 270 {
 271         struct ptlrpc_request   *req = mdt_info_req(info);
 272         struct mdt_export_data  *med = mdt_req2med(req);
 273         struct mdt_device       *mdt = info->mti_mdt;
 274         struct ptlrpc_user_desc *pud = req->rq_user_desc;
 275         struct md_ucred         *ucred = mdt_ucred(info);
 276         struct md_identity      *identity = NULL;
 277         lnet_nid_t               peernid = req->rq_peer.nid;
 278         __u32                    perm = 0;
 279         int                      setuid;
 280         int                      setgid;
 281         int                      rc = 0;
 282
 283         ENTRY;
 284
 285         if ((ucred->mu_valid == UCRED_OLD) || (ucred->mu_valid == UCRED_NEW))
 286                 RETURN(0);
 287
 288         if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc)
 289                 RETURN(0);
 290
 291         /* sanity check: if we use strong authentication, we expect the
 292          * uid which client claimed is true */
 293         if (med->med_rmtclient) {
 294                 if (req->rq_auth_mapped_uid == INVALID_UID) {
 295                         CDEBUG(D_SEC, "remote user not mapped, deny access!\n");
 296                         RETURN(-EACCES);
 297                 }
 298
 299                 if (ptlrpc_user_desc_do_idmap(req, pud))
 300                         RETURN(-EACCES);
 301
 302                 if (req->rq_auth_mapped_uid != pud->pud_uid) {
 303                         CDEBUG(D_SEC, "remote client %s: auth/mapped uid %u/%u "
 304                                "while client claims %u:%u/%u:%u\n",
 305                                libcfs_nid2str(peernid), req->rq_auth_uid,
 306                                req->rq_auth_mapped_uid,
 307                                pud->pud_uid, pud->pud_gid,
 308                                pud->pud_fsuid, pud->pud_fsgid);
 309                         RETURN(-EACCES);
 310                 }
 311         } else {
 312                 if (req->rq_auth_uid != pud->pud_uid) {
 313                         CDEBUG(D_SEC, "local client %s: auth uid %u "
 314                                "while client claims %u:%u/%u:%u\n",
 315                                libcfs_nid2str(peernid), req->rq_auth_uid,
 316                                pud->pud_uid, pud->pud_gid,
 317                                pud->pud_fsuid, pud->pud_fsgid);
 318                         RETURN(-EACCES);
 319                 }
 320         }
 321
 322         if (is_identity_get_disabled(mdt->mdt_identity_cache)) {
 323                 if (med->med_rmtclient) {
 324                         CDEBUG(D_SEC, "remote client must run with identity_get "
 325                                "enabled!\n");
 326                         RETURN(-EACCES);
 327                 }
 328                 RETURN(0);
 329         }
 330
 331         identity = mdt_identity_get(mdt->mdt_identity_cache, pud->pud_uid);
 332         if (IS_ERR(identity)) {
 333                 if (unlikely(PTR_ERR(identity) == -EREMCHG &&
 334                              !med->med_rmtclient)) {
 335                         RETURN(0);
 336                 } else {
 337                         CDEBUG(D_SEC, "Deny access without identity: uid %u\n",
 338                                pud->pud_uid);
 339                         RETURN(-EACCES);
 340                }
 341         }
 342
 343         perm = mdt_identity_get_perm(identity, med->med_rmtclient, peernid);
 344         /* find out the setuid/setgid attempt */
 345         setuid = (pud->pud_uid != pud->pud_fsuid);
 346         setgid = (pud->pud_gid != pud->pud_fsgid ||
 347                   pud->pud_gid != identity->mi_gid);
 348
 349         /* check permission of setuid */
 350         if (setuid && !(perm & CFS_SETUID_PERM)) {
 351                 CDEBUG(D_SEC, "mdt blocked setuid attempt (%u -> %u) from %s\n",
 352                        pud->pud_uid, pud->pud_fsuid, libcfs_nid2str(peernid));
 353                 GOTO(out, rc = -EACCES);
 354         }
 355
 356         /* check permission of setgid */
 357         if (setgid && !(perm & CFS_SETGID_PERM)) {
 358                 CDEBUG(D_SEC, "mdt blocked setgid attempt (%u:%u/%u:%u -> %u) "
 359                        "from %s\n", pud->pud_uid, pud->pud_gid,
 360                        pud->pud_fsuid, pud->pud_fsgid, identity->mi_gid,
 361                        libcfs_nid2str(peernid));
 362                 GOTO(out, rc = -EACCES);
 363         }
 364
 365         EXIT;
 366
 367 out:
 368         mdt_identity_put(mdt->mdt_identity_cache, identity);
 369         return rc;
 370 }
 371
 372 static int old_init_ucred(struct mdt_thread_info *info,
 373                           struct mdt_body *body)
 374 {
 375         struct md_ucred *uc = mdt_ucred(info);
 376         struct mdt_device  *mdt = info->mti_mdt;
 377         struct md_identity *identity = NULL;
 378
 379         ENTRY;
 380
 381         uc->mu_valid = UCRED_INVALID;
 382         uc->mu_o_uid = uc->mu_uid = body->uid;
 383         uc->mu_o_gid = uc->mu_gid = body->gid;
 384         uc->mu_o_fsuid = uc->mu_fsuid = body->fsuid;
 385         uc->mu_o_fsgid = uc->mu_fsgid = body->fsgid;
 386         uc->mu_suppgids[0] = body->suppgid;
 387         uc->mu_suppgids[1] = -1;
 388         uc->mu_ginfo = NULL;
 389         if (!is_identity_get_disabled(mdt->mdt_identity_cache)) {
 390                 identity = mdt_identity_get(mdt->mdt_identity_cache,
 391                                             uc->mu_fsuid);
 392                 if (IS_ERR(identity)) {
 393                         if (unlikely(PTR_ERR(identity) == -EREMCHG)) {
 394                                 identity = NULL;
 395                         } else {
 396                                 CDEBUG(D_SEC, "Deny access without identity: "
 397                                        "uid %u\n", uc->mu_fsuid);
 398                                 RETURN(-EACCES);
 399                         }
 400                 }
 401         }
 402         uc->mu_identity = identity;
 403
 404         /* XXX: need to process root_squash here. */
 405         mdt_root_squash(info);
 406
 407         /* remove fs privilege for non-root user */
 408         if (uc->mu_fsuid)
 409                 uc->mu_cap = body->capability & ~CFS_CAP_FS_MASK;
 410         else
 411                 uc->mu_cap = body->capability;
 412         uc->mu_valid = UCRED_OLD;
 413
 414         RETURN(0);
 415 }
 416
 417 static int old_init_ucred_reint(struct mdt_thread_info *info)
 418 {
 419         struct md_ucred *uc = mdt_ucred(info);
 420         struct mdt_device  *mdt = info->mti_mdt;
 421         struct md_identity *identity = NULL;
 422
 423         ENTRY;
 424
 425         uc->mu_valid = UCRED_INVALID;
 426         uc->mu_o_uid = uc->mu_o_fsuid = uc->mu_uid = uc->mu_fsuid;
 427         uc->mu_o_gid = uc->mu_o_fsgid = uc->mu_gid = uc->mu_fsgid;
 428         uc->mu_ginfo = NULL;
 429         if (!is_identity_get_disabled(mdt->mdt_identity_cache)) {
 430                 identity = mdt_identity_get(mdt->mdt_identity_cache,
 431                                             uc->mu_fsuid);
 432                 if (IS_ERR(identity)) {
 433                         if (unlikely(PTR_ERR(identity) == -EREMCHG)) {
 434                                 identity = NULL;
 435                         } else {
 436                                 CDEBUG(D_SEC, "Deny access without identity: "
 437                                        "uid %u\n", uc->mu_fsuid);
 438                                 RETURN(-EACCES);
 439                         }
 440                 }
 441         }
 442         uc->mu_identity = identity;
 443
 444         /* XXX: need to process root_squash here. */
 445         mdt_root_squash(info);
 446
 447         /* remove fs privilege for non-root user */
 448         if (uc->mu_fsuid)
 449                 uc->mu_cap &= ~CFS_CAP_FS_MASK;
 450         uc->mu_valid = UCRED_OLD;
 451
 452         RETURN(0);
 453 }
 454
 455 int mdt_init_ucred(struct mdt_thread_info *info, struct mdt_body *body)
 456 {
 457         struct ptlrpc_request *req = mdt_info_req(info);
 458         struct md_ucred       *uc  = mdt_ucred(info);
 459
 460         if ((uc->mu_valid == UCRED_OLD) || (uc->mu_valid == UCRED_NEW))
 461                 return 0;
 462
 463         mdt_exit_ucred(info);
 464
 465         if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc)
 466                 return old_init_ucred(info, body);
 467         else
 468                 return new_init_ucred(info, BODY_INIT, body);
 469 }
 470
 471 int mdt_init_ucred_reint(struct mdt_thread_info *info)
 472 {
 473         struct ptlrpc_request *req = mdt_info_req(info);
 474         struct md_ucred       *uc  = mdt_ucred(info);
 475
 476         if ((uc->mu_valid == UCRED_OLD) || (uc->mu_valid == UCRED_NEW))
 477                 return 0;
 478
 479         mdt_exit_ucred(info);
 480
 481         if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc)
 482                 return old_init_ucred_reint(info);
 483         else
 484                 return new_init_ucred(info, REC_INIT, NULL);
 485 }
 486
 487 /* copied from lov/lov_ea.c, just for debugging, will be removed later */
 488 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm)
 489 {
 490         const struct lov_ost_data_v1 *lod;
 491         int i;
 492         __s16 stripe_count =
 493                 le16_to_cpu(((struct lov_user_md*)lmm)->lmm_stripe_count);
 494
 495         CDEBUG(level, "objid "LPX64", magic 0x%08X, pattern %#X\n",
 496                le64_to_cpu(lmm->lmm_object_id), le32_to_cpu(lmm->lmm_magic),
 497                le32_to_cpu(lmm->lmm_pattern));
 498         CDEBUG(level,"stripe_size=0x%x, stripe_count=0x%x\n",
 499                le32_to_cpu(lmm->lmm_stripe_size),
 500                le32_to_cpu(lmm->lmm_stripe_count));
 501         LASSERT(stripe_count <= (__s16)LOV_MAX_STRIPE_COUNT);
 502         for (i = 0, lod = lmm->lmm_objects; i < stripe_count; i++, lod++) {
 503                 CDEBUG(level, "stripe %u idx %u subobj "LPX64"/"LPX64"\n",
 504                        i, le32_to_cpu(lod->l_ost_idx),
 505                        le64_to_cpu(lod->l_object_gr),
 506                        le64_to_cpu(lod->l_object_id));
 507         }
 508 }
 509
 510 void mdt_shrink_reply(struct mdt_thread_info *info)
 511 {
 512         struct req_capsule *pill = info->mti_pill;
 513         struct mdt_body    *body;
 514         int                md_size;
 515         int                acl_size;
 516         ENTRY;
 517
 518         body = req_capsule_server_get(pill, &RMF_MDT_BODY);
 519         LASSERT(body != NULL);
 520
 521         if (body->valid & (OBD_MD_FLDIREA | OBD_MD_FLEASIZE | OBD_MD_LINKNAME))
 522                 md_size = body->eadatasize;
 523         else
 524                 md_size = 0;
 525
 526         acl_size = body->aclsize;
 527
 528         CDEBUG(D_INFO, "Shrink to md_size = %d cookie/acl_size = %d"
 529                         " MDSCAPA = "LPX64", OSSCAPA = "LPX64"\n",
 530                         md_size, acl_size,
 531                         body->valid & OBD_MD_FLMDSCAPA,
 532                         body->valid & OBD_MD_FLOSSCAPA);
 533 /*
 534             &RMF_MDT_BODY,
 535             &RMF_MDT_MD,
 536             &RMF_ACL, or &RMF_LOGCOOKIES
 537 (optional)  &RMF_CAPA1,
 538 (optional)  &RMF_CAPA2,
 539 (optional)  something else
 540 */
 541
 542         if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
 543                 req_capsule_shrink(pill, &RMF_MDT_MD, md_size,
 544                                    RCL_SERVER);
 545         if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
 546                 req_capsule_shrink(pill, &RMF_ACL, acl_size, RCL_SERVER);
 547         else if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
 548                 req_capsule_shrink(pill, &RMF_LOGCOOKIES,
 549                                    acl_size, RCL_SERVER);
 550
 551         if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_SERVER) &&
 552             !(body->valid & OBD_MD_FLMDSCAPA))
 553                 req_capsule_shrink(pill, &RMF_CAPA1, 0, RCL_SERVER);
 554
 555         if (req_capsule_has_field(pill, &RMF_CAPA2, RCL_SERVER) &&
 556             !(body->valid & OBD_MD_FLOSSCAPA))
 557                 req_capsule_shrink(pill, &RMF_CAPA2, 0, RCL_SERVER);
 558
 559         /*
 560          * Some more field should be shrinked if needed.
 561          * This should be done by those who added fields to reply message.
 562          */
 563         EXIT;
 564 }
 565
 566
 567 /* if object is dying, pack the lov/llog data,
 568  * parameter info->mti_attr should be valid at this point! */
 569 int mdt_handle_last_unlink(struct mdt_thread_info *info, struct mdt_object *mo,
 570                            const struct md_attr *ma)
 571 {
 572         struct mdt_body       *repbody;
 573         const struct lu_attr *la = &ma->ma_attr;
 574         ENTRY;
 575
 576         repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
 577         LASSERT(repbody != NULL);
 578
 579         if (ma->ma_valid & MA_INODE)
 580                 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(mo));
 581
 582         if (ma->ma_valid & MA_LOV) {
 583                 __u32 mode;
 584
 585                 if (mdt_object_exists(mo) < 0)
 586                         /* If it is a remote object, and we do not retrieve
 587                          * EA back unlink reg file*/
 588                         mode = S_IFREG;
 589                 else
 590                         mode = lu_object_attr(&mo->mot_obj.mo_lu);
 591
 592                 LASSERT(ma->ma_lmm_size);
 593                 mdt_dump_lmm(D_INFO, ma->ma_lmm);
 594                 repbody->eadatasize = ma->ma_lmm_size;
 595                 if (S_ISREG(mode))
 596                         repbody->valid |= OBD_MD_FLEASIZE;
 597                 else if (S_ISDIR(mode))
 598                         repbody->valid |= OBD_MD_FLDIREA;
 599                 else
 600                         LBUG();
 601         }
 602
 603         if (ma->ma_cookie_size && (ma->ma_valid & MA_COOKIE)) {
 604                 repbody->aclsize = ma->ma_cookie_size;
 605                 repbody->valid |= OBD_MD_FLCOOKIE;
 606         }
 607
 608         RETURN(0);
 609 }
 610
 611 static inline unsigned int attr_unpack(__u64 sa_valid) {
 612         unsigned int ia_valid = 0;
 613
 614         if (sa_valid & MDS_ATTR_MODE)
 615                 ia_valid |= ATTR_MODE;
 616         if (sa_valid & MDS_ATTR_UID)
 617                 ia_valid |= ATTR_UID;
 618         if (sa_valid & MDS_ATTR_GID)
 619                 ia_valid |= ATTR_GID;
 620         if (sa_valid & MDS_ATTR_SIZE)
 621                 ia_valid |= ATTR_SIZE;
 622         if (sa_valid & MDS_ATTR_ATIME)
 623                 ia_valid |= ATTR_ATIME;
 624         if (sa_valid & MDS_ATTR_MTIME)
 625                 ia_valid |= ATTR_MTIME;
 626         if (sa_valid & MDS_ATTR_CTIME)
 627                 ia_valid |= ATTR_CTIME;
 628         if (sa_valid & MDS_ATTR_ATIME_SET)
 629                 ia_valid |= ATTR_ATIME_SET;
 630         if (sa_valid & MDS_ATTR_MTIME_SET)
 631                 ia_valid |= ATTR_MTIME_SET;
 632         if (sa_valid & MDS_ATTR_FORCE)
 633                 ia_valid |= ATTR_FORCE;
 634         if (sa_valid & MDS_ATTR_ATTR_FLAG)
 635                 ia_valid |= ATTR_ATTR_FLAG;
 636         if (sa_valid & MDS_ATTR_KILL_SUID)
 637                 ia_valid |=  ATTR_KILL_SUID;
 638         if (sa_valid & MDS_ATTR_KILL_SGID)
 639                 ia_valid |= ATTR_KILL_SGID;
 640         if (sa_valid & MDS_ATTR_CTIME_SET)
 641                 ia_valid |= ATTR_CTIME_SET;
 642         if (sa_valid & MDS_ATTR_FROM_OPEN)
 643                 ia_valid |= ATTR_FROM_OPEN;
 644         if (sa_valid & MDS_ATTR_BLOCKS)
 645                 ia_valid |= ATTR_BLOCKS;
 646         if (sa_valid & MDS_OPEN_OWNEROVERRIDE)
 647                 ia_valid |= MDS_OPEN_OWNEROVERRIDE;
 648         return ia_valid;
 649 }
 650
 651 static __u64 mdt_attr_valid_xlate(__u64 in, struct mdt_reint_record *rr,
 652                                   struct md_attr *ma)
 653 {
 654         __u64 out;
 655
 656         out = 0;
 657         if (in & ATTR_MODE)
 658                 out |= LA_MODE;
 659         if (in & ATTR_UID)
 660                 out |= LA_UID;
 661         if (in & ATTR_GID)
 662                 out |= LA_GID;
 663         if (in & ATTR_SIZE)
 664                 out |= LA_SIZE;
 665         if (in & ATTR_BLOCKS)
 666                 out |= LA_BLOCKS;
 667
 668         if (in & ATTR_FROM_OPEN)
 669                 rr->rr_flags |= MRF_SETATTR_LOCKED;
 670
 671         if (in & ATTR_ATIME_SET)
 672                 out |= LA_ATIME;
 673
 674         if (in & ATTR_CTIME_SET)
 675                 out |= LA_CTIME;
 676
 677         if (in & ATTR_MTIME_SET)
 678                 out |= LA_MTIME;
 679
 680         if (in & ATTR_ATTR_FLAG)
 681                 out |= LA_FLAGS;
 682
 683         if (in & MDS_OPEN_OWNEROVERRIDE)
 684                 ma->ma_attr_flags |= MDS_OPEN_OWNEROVERRIDE;
 685
 686         if (in & (ATTR_KILL_SUID|ATTR_KILL_SGID))
 687                 ma->ma_attr_flags |= MDS_PERM_BYPASS;
 688
 689         /*XXX need ATTR_RAW?*/
 690         in &= ~(ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_SIZE|ATTR_BLOCKS|
 691                 ATTR_ATIME|ATTR_MTIME|ATTR_CTIME|ATTR_FROM_OPEN|
 692                 ATTR_ATIME_SET|ATTR_CTIME_SET|ATTR_MTIME_SET|
 693                 ATTR_ATTR_FLAG|ATTR_RAW|MDS_OPEN_OWNEROVERRIDE);
 694         if (in != 0)
 695                 CERROR("Unknown attr bits: %#llx\n", in);
 696         return out;
 697 }
 698 /* unpacking */
 699
 700 static int mdt_setattr_unpack_rec(struct mdt_thread_info *info)
 701 {
 702         struct md_ucred         *uc  = mdt_ucred(info);
 703         struct md_attr          *ma = &info->mti_attr;
 704         struct lu_attr          *la = &ma->ma_attr;
 705         struct req_capsule      *pill = info->mti_pill;
 706         struct mdt_reint_record *rr = &info->mti_rr;
 707         struct mdt_rec_setattr  *rec;
 708         ENTRY;
 709
 710         CLASSERT(sizeof(struct mdt_rec_setattr)== sizeof(struct mdt_rec_reint));
 711         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 712         if (rec == NULL)
 713                 RETURN(-EFAULT);
 714
 715         uc->mu_fsuid = rec->sa_fsuid;
 716         uc->mu_fsgid = rec->sa_fsgid;
 717         uc->mu_cap   = rec->sa_cap;
 718         uc->mu_suppgids[0] = rec->sa_suppgid;
 719         uc->mu_suppgids[1] = -1;
 720
 721         rr->rr_fid1 = &rec->sa_fid;
 722         la->la_valid = mdt_attr_valid_xlate(attr_unpack(rec->sa_valid), rr, ma);
 723         la->la_mode  = rec->sa_mode;
 724         la->la_flags = rec->sa_attr_flags;
 725         la->la_uid   = rec->sa_uid;
 726         la->la_gid   = rec->sa_gid;
 727         la->la_size  = rec->sa_size;
 728         la->la_blocks = rec->sa_blocks;
 729         la->la_ctime = rec->sa_ctime;
 730         la->la_atime = rec->sa_atime;
 731         la->la_mtime = rec->sa_mtime;
 732         ma->ma_valid = MA_INODE;
 733
 734         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
 735                 mdt_set_capainfo(info, 0, rr->rr_fid1,
 736                                  req_capsule_client_get(pill, &RMF_CAPA1));
 737
 738         RETURN(0);
 739 }
 740
 741 static int mdt_epoch_unpack(struct mdt_thread_info *info)
 742 {
 743         struct req_capsule *pill = info->mti_pill;
 744         ENTRY;
 745
 746         if (req_capsule_get_size(pill, &RMF_MDT_EPOCH, RCL_CLIENT))
 747                 info->mti_epoch = req_capsule_client_get(pill, &RMF_MDT_EPOCH);
 748         else
 749                 info->mti_epoch = NULL;
 750         RETURN(info->mti_epoch == NULL ? -EFAULT : 0);
 751 }
 752
 753 static inline int mdt_dlmreq_unpack(struct mdt_thread_info *info) {
 754         struct req_capsule      *pill = info->mti_pill;
 755
 756         if (req_capsule_get_size(pill, &RMF_DLM_REQ, RCL_CLIENT)) {
 757                 info->mti_dlm_req = req_capsule_client_get(pill, &RMF_DLM_REQ);
 758                 if (info->mti_dlm_req == NULL)
 759                         RETURN(-EFAULT);
 760         }
 761
 762         RETURN(0);
 763 }
 764
 765 static int mdt_setattr_unpack(struct mdt_thread_info *info)
 766 {
 767         struct md_attr          *ma = &info->mti_attr;
 768         struct req_capsule      *pill = info->mti_pill;
 769         int rc;
 770         ENTRY;
 771
 772         rc = mdt_setattr_unpack_rec(info);
 773         if (rc)
 774                 RETURN(rc);
 775
 776         /* Epoch may be absent */
 777         mdt_epoch_unpack(info);
 778
 779         ma->ma_lmm_size = req_capsule_get_size(pill, &RMF_EADATA, RCL_CLIENT);
 780         if (ma->ma_lmm_size) {
 781                 ma->ma_lmm = req_capsule_client_get(pill, &RMF_EADATA);
 782                 ma->ma_valid |= MA_LOV;
 783         }
 784
 785         ma->ma_cookie_size = req_capsule_get_size(pill, &RMF_LOGCOOKIES,
 786                                                   RCL_CLIENT);
 787         if (ma->ma_cookie_size) {
 788                 ma->ma_cookie = req_capsule_client_get(pill, &RMF_LOGCOOKIES);
 789                 ma->ma_valid |= MA_COOKIE;
 790         }
 791
 792         rc = mdt_dlmreq_unpack(info);
 793         RETURN(rc);
 794 }
 795
 796 int mdt_close_unpack(struct mdt_thread_info *info)
 797 {
 798         int rc;
 799         ENTRY;
 800
 801         rc = mdt_epoch_unpack(info);
 802         if (rc)
 803                 RETURN(rc);
 804
 805         RETURN(mdt_setattr_unpack_rec(info));
 806 }
 807
 808 static int mdt_create_unpack(struct mdt_thread_info *info)
 809 {
 810         struct md_ucred         *uc  = mdt_ucred(info);
 811         struct mdt_rec_create   *rec;
 812         struct lu_attr          *attr = &info->mti_attr.ma_attr;
 813         struct mdt_reint_record *rr = &info->mti_rr;
 814         struct req_capsule      *pill = info->mti_pill;
 815         struct md_op_spec       *sp = &info->mti_spec;
 816         int rc;
 817         ENTRY;
 818
 819         CLASSERT(sizeof(struct mdt_rec_create) == sizeof(struct mdt_rec_reint));
 820         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 821         if (rec == NULL)
 822                 RETURN(-EFAULT);
 823
 824         uc->mu_fsuid = rec->cr_fsuid;
 825         uc->mu_fsgid = rec->cr_fsgid;
 826         uc->mu_cap   = rec->cr_cap;
 827         uc->mu_suppgids[0] = rec->cr_suppgid1;
 828         uc->mu_suppgids[1] = -1;
 829
 830         rr->rr_fid1 = &rec->cr_fid1;
 831         rr->rr_fid2 = &rec->cr_fid2;
 832         attr->la_mode = rec->cr_mode;
 833         attr->la_rdev  = rec->cr_rdev;
 834         attr->la_uid   = rec->cr_fsuid;
 835         attr->la_gid   = rec->cr_fsgid;
 836         attr->la_ctime = rec->cr_time;
 837         attr->la_mtime = rec->cr_time;
 838         attr->la_atime = rec->cr_time;
 839         attr->la_valid = LA_MODE | LA_RDEV | LA_UID | LA_GID |
 840                          LA_CTIME | LA_MTIME | LA_ATIME;
 841         memset(&sp->u, 0, sizeof(sp->u));
 842         sp->sp_cr_flags = rec->cr_flags;
 843         sp->sp_ck_split = !!(rec->cr_bias & MDS_CHECK_SPLIT);
 844         info->mti_cross_ref = !!(rec->cr_bias & MDS_CROSS_REF);
 845
 846         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
 847                 mdt_set_capainfo(info, 0, rr->rr_fid1,
 848                                  req_capsule_client_get(pill, &RMF_CAPA1));
 849         mdt_set_capainfo(info, 1, rr->rr_fid2, BYPASS_CAPA);
 850
 851         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
 852         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
 853         LASSERT(rr->rr_name && rr->rr_namelen > 0);
 854
 855 #ifdef CONFIG_FS_POSIX_ACL
 856         if (sp->sp_cr_flags & MDS_CREATE_RMT_ACL) {
 857                 if (S_ISDIR(attr->la_mode))
 858                         sp->u.sp_pfid = rr->rr_fid1;
 859                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_RMT_ACL);
 860                 LASSERT(req_capsule_field_present(pill, &RMF_EADATA,
 861                                                   RCL_CLIENT));
 862                 sp->u.sp_ea.eadata = req_capsule_client_get(pill, &RMF_EADATA);
 863                 sp->u.sp_ea.eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
 864                                                              RCL_CLIENT);
 865                 sp->u.sp_ea.fid = rr->rr_fid1;
 866                 RETURN(0);
 867         }
 868 #endif
 869         if (S_ISDIR(attr->la_mode)) {
 870                 /* pass parent fid for cross-ref cases */
 871                 sp->u.sp_pfid = rr->rr_fid1;
 872                 if (sp->sp_cr_flags & MDS_CREATE_SLAVE_OBJ) {
 873                         /* create salve object req, need
 874                          * unpack split ea here
 875                          */
 876                        req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_SLAVE);
 877                        LASSERT(req_capsule_field_present(pill, &RMF_EADATA,
 878                                                          RCL_CLIENT));
 879                        sp->u.sp_ea.eadata = req_capsule_client_get(pill,
 880                                                                    &RMF_EADATA);
 881                        sp->u.sp_ea.eadatalen = req_capsule_get_size(pill,
 882                                                                     &RMF_EADATA,
 883                                                                     RCL_CLIENT);
 884                        sp->u.sp_ea.fid = rr->rr_fid1;
 885                        RETURN(0);
 886                 }
 887                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_RMT_ACL);
 888         } else if (S_ISLNK(attr->la_mode)) {
 889                 const char *tgt = NULL;
 890
 891                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_SYM);
 892                 if (req_capsule_get_size(pill, &RMF_SYMTGT, RCL_CLIENT)) {
 893                         tgt = req_capsule_client_get(pill, &RMF_SYMTGT);
 894                         sp->u.sp_symname = tgt;
 895                 }
 896                 if (tgt == NULL)
 897                         RETURN(-EFAULT);
 898         } else {
 899                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_RMT_ACL);
 900         }
 901         rc = mdt_dlmreq_unpack(info);
 902         RETURN(rc);
 903 }
 904
 905 static int mdt_link_unpack(struct mdt_thread_info *info)
 906 {
 907         struct md_ucred         *uc  = mdt_ucred(info);
 908         struct mdt_rec_link     *rec;
 909         struct lu_attr          *attr = &info->mti_attr.ma_attr;
 910         struct mdt_reint_record *rr = &info->mti_rr;
 911         struct req_capsule      *pill = info->mti_pill;
 912         int rc;
 913         ENTRY;
 914
 915         CLASSERT(sizeof(struct mdt_rec_link) == sizeof(struct mdt_rec_reint));
 916         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 917         if (rec == NULL)
 918                 RETURN(-EFAULT);
 919
 920         uc->mu_fsuid = rec->lk_fsuid;
 921         uc->mu_fsgid = rec->lk_fsgid;
 922         uc->mu_cap   = rec->lk_cap;
 923         uc->mu_suppgids[0] = rec->lk_suppgid1;
 924         uc->mu_suppgids[1] = rec->lk_suppgid2;
 925
 926         attr->la_uid = rec->lk_fsuid;
 927         attr->la_gid = rec->lk_fsgid;
 928         rr->rr_fid1 = &rec->lk_fid1;
 929         rr->rr_fid2 = &rec->lk_fid2;
 930         attr->la_ctime = rec->lk_time;
 931         attr->la_mtime = rec->lk_time;
 932         attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME;
 933
 934         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
 935                 mdt_set_capainfo(info, 0, rr->rr_fid1,
 936                                  req_capsule_client_get(pill, &RMF_CAPA1));
 937         if (req_capsule_get_size(pill, &RMF_CAPA2, RCL_CLIENT))
 938                 mdt_set_capainfo(info, 1, rr->rr_fid2,
 939                                  req_capsule_client_get(pill, &RMF_CAPA2));
 940
 941         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
 942         if (rr->rr_name == NULL)
 943                 RETURN(-EFAULT);
 944         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
 945         LASSERT(rr->rr_namelen > 0);
 946         info->mti_spec.sp_ck_split = !!(rec->lk_bias & MDS_CHECK_SPLIT);
 947         info->mti_cross_ref = !!(rec->lk_bias & MDS_CROSS_REF);
 948
 949         rc = mdt_dlmreq_unpack(info);
 950         RETURN(rc);
 951 }
 952
 953 static int mdt_unlink_unpack(struct mdt_thread_info *info)
 954 {
 955         struct md_ucred         *uc  = mdt_ucred(info);
 956         struct mdt_rec_unlink   *rec;
 957         struct md_attr          *ma = &info->mti_attr;
 958         struct lu_attr          *attr = &info->mti_attr.ma_attr;
 959         struct mdt_reint_record *rr = &info->mti_rr;
 960         struct req_capsule      *pill = info->mti_pill;
 961         int rc;
 962         ENTRY;
 963
 964         CLASSERT(sizeof(struct mdt_rec_unlink) == sizeof(struct mdt_rec_reint));
 965         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 966         if (rec == NULL)
 967                 RETURN(-EFAULT);
 968
 969         uc->mu_fsuid = rec->ul_fsuid;
 970         uc->mu_fsgid = rec->ul_fsgid;
 971         uc->mu_cap   = rec->ul_cap;
 972         uc->mu_suppgids[0] = rec->ul_suppgid1;
 973         uc->mu_suppgids[1] = -1;
 974
 975         attr->la_uid = rec->ul_fsuid;
 976         attr->la_gid = rec->ul_fsgid;
 977         rr->rr_fid1 = &rec->ul_fid1;
 978         rr->rr_fid2 = &rec->ul_fid2;
 979         attr->la_ctime = rec->ul_time;
 980         attr->la_mtime = rec->ul_time;
 981         attr->la_mode  = rec->ul_mode;
 982         attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME | LA_MODE;
 983
 984         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
 985                 mdt_set_capainfo(info, 0, rr->rr_fid1,
 986                                  req_capsule_client_get(pill, &RMF_CAPA1));
 987
 988         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
 989         if (rr->rr_name == NULL)
 990                 RETURN(-EFAULT);
 991         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
 992         LASSERT(rr->rr_namelen > 0);
 993         info->mti_spec.sp_ck_split = !!(rec->ul_bias & MDS_CHECK_SPLIT);
 994         info->mti_cross_ref = !!(rec->ul_bias & MDS_CROSS_REF);
 995         if (rec->ul_bias & MDS_VTX_BYPASS)
 996                 ma->ma_attr_flags |= MDS_VTX_BYPASS;
 997         else
 998                 ma->ma_attr_flags &= ~MDS_VTX_BYPASS;
 999
1000         rc = mdt_dlmreq_unpack(info);
1001         RETURN(rc);
1002 }
1003
1004 static int mdt_rename_unpack(struct mdt_thread_info *info)
1005 {
1006         struct md_ucred         *uc = mdt_ucred(info);
1007         struct mdt_rec_rename   *rec;
1008         struct md_attr          *ma = &info->mti_attr;
1009         struct lu_attr          *attr = &info->mti_attr.ma_attr;
1010         struct mdt_reint_record *rr = &info->mti_rr;
1011         struct req_capsule      *pill = info->mti_pill;
1012         int rc;
1013         ENTRY;
1014
1015         CLASSERT(sizeof(struct mdt_rec_rename) == sizeof(struct mdt_rec_reint));
1016         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1017         if (rec == NULL)
1018                 RETURN(-EFAULT);
1019
1020         uc->mu_fsuid = rec->rn_fsuid;
1021         uc->mu_fsgid = rec->rn_fsgid;
1022         uc->mu_cap   = rec->rn_cap;
1023         uc->mu_suppgids[0] = rec->rn_suppgid1;
1024         uc->mu_suppgids[1] = rec->rn_suppgid2;
1025
1026         attr->la_uid = rec->rn_fsuid;
1027         attr->la_gid = rec->rn_fsgid;
1028         rr->rr_fid1 = &rec->rn_fid1;
1029         rr->rr_fid2 = &rec->rn_fid2;
1030         attr->la_ctime = rec->rn_time;
1031         attr->la_mtime = rec->rn_time;
1032         /* rename_tgt contains the mode already */
1033         attr->la_mode = rec->rn_mode;
1034         attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME | LA_MODE;
1035
1036         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
1037                 mdt_set_capainfo(info, 0, rr->rr_fid1,
1038                                  req_capsule_client_get(pill, &RMF_CAPA1));
1039         if (req_capsule_get_size(pill, &RMF_CAPA2, RCL_CLIENT))
1040                 mdt_set_capainfo(info, 1, rr->rr_fid2,
1041                                  req_capsule_client_get(pill, &RMF_CAPA2));
1042
1043         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1044         rr->rr_tgt = req_capsule_client_get(pill, &RMF_SYMTGT);
1045         if (rr->rr_name == NULL || rr->rr_tgt == NULL)
1046                 RETURN(-EFAULT);
1047         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1048         LASSERT(rr->rr_namelen > 0);
1049         rr->rr_tgtlen = req_capsule_get_size(pill, &RMF_SYMTGT, RCL_CLIENT) - 1;
1050         LASSERT(rr->rr_tgtlen > 0);
1051         info->mti_spec.sp_ck_split = !!(rec->rn_bias & MDS_CHECK_SPLIT);
1052         info->mti_cross_ref = !!(rec->rn_bias & MDS_CROSS_REF);
1053         if (rec->rn_bias & MDS_VTX_BYPASS)
1054                 ma->ma_attr_flags |= MDS_VTX_BYPASS;
1055         else
1056                 ma->ma_attr_flags &= ~MDS_VTX_BYPASS;
1057
1058         rc = mdt_dlmreq_unpack(info);
1059         RETURN(rc);
1060 }
1061
1062 static int mdt_open_unpack(struct mdt_thread_info *info)
1063 {
1064         struct md_ucred         *uc = mdt_ucred(info);
1065         struct mdt_rec_create   *rec;
1066         struct lu_attr          *attr = &info->mti_attr.ma_attr;
1067         struct req_capsule      *pill = info->mti_pill;
1068         struct mdt_reint_record *rr   = &info->mti_rr;
1069         struct ptlrpc_request   *req  = mdt_info_req(info);
1070         struct md_op_spec       *sp   = &info->mti_spec;
1071         ENTRY;
1072
1073         CLASSERT(sizeof(struct mdt_rec_create) == sizeof(struct mdt_rec_reint));
1074         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1075         if (rec == NULL)
1076                 RETURN(-EFAULT);
1077
1078         uc->mu_fsuid = rec->cr_fsuid;
1079         uc->mu_fsgid = rec->cr_fsgid;
1080         uc->mu_cap   = rec->cr_cap;
1081         uc->mu_suppgids[0] = rec->cr_suppgid1;
1082         uc->mu_suppgids[1] = rec->cr_suppgid2;
1083
1084         rr->rr_fid1   = &rec->cr_fid1;
1085         rr->rr_fid2   = &rec->cr_fid2;
1086         rr->rr_handle = &rec->cr_old_handle;
1087         attr->la_mode = rec->cr_mode;
1088         attr->la_rdev  = rec->cr_rdev;
1089         attr->la_uid   = rec->cr_fsuid;
1090         attr->la_gid   = rec->cr_fsgid;
1091         attr->la_ctime = rec->cr_time;
1092         attr->la_mtime = rec->cr_time;
1093         attr->la_atime = rec->cr_time;
1094         attr->la_valid = LA_MODE  | LA_RDEV  | LA_UID   | LA_GID |
1095                          LA_CTIME | LA_MTIME | LA_ATIME;
1096         memset(&info->mti_spec.u, 0, sizeof(info->mti_spec.u));
1097         info->mti_spec.sp_cr_flags = rec->cr_flags;
1098         info->mti_replayepoch = rec->cr_ioepoch;
1099
1100         info->mti_spec.sp_ck_split = !!(rec->cr_bias & MDS_CHECK_SPLIT);
1101         info->mti_cross_ref = !!(rec->cr_bias & MDS_CROSS_REF);
1102
1103         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
1104                 mdt_set_capainfo(info, 0, rr->rr_fid1,
1105                                  req_capsule_client_get(pill, &RMF_CAPA1));
1106         if ((lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) &&
1107             (req_capsule_get_size(pill, &RMF_CAPA2, RCL_CLIENT))) {
1108 #if 0
1109                 mdt_set_capainfo(info, 1, rr->rr_fid2,
1110                                  req_capsule_client_get(pill, &RMF_CAPA2));
1111 #else
1112                 /*
1113                  * FIXME: capa in replay open request might have expired,
1114                  * bypass capa check. Security hole?
1115                  */
1116                 mdt_set_capainfo(info, 0, rr->rr_fid1, BYPASS_CAPA);
1117                 mdt_set_capainfo(info, 1, rr->rr_fid2, BYPASS_CAPA);
1118 #endif
1119         }
1120
1121         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1122         if (rr->rr_name == NULL)
1123                 RETURN(-EFAULT);
1124         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1125
1126         sp->u.sp_ea.eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
1127                                                      RCL_CLIENT);
1128         if (sp->u.sp_ea.eadatalen) {
1129                 sp->u.sp_ea.eadata = req_capsule_client_get(pill, &RMF_EADATA);
1130                 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
1131                         sp->u.sp_ea.no_lov_create = 1;
1132         }
1133
1134         RETURN(0);
1135 }
1136
1137 static int mdt_setxattr_unpack(struct mdt_thread_info *info)
1138 {
1139         struct mdt_reint_record   *rr   = &info->mti_rr;
1140         struct md_ucred           *uc   = mdt_ucred(info);
1141         struct lu_attr            *attr = &info->mti_attr.ma_attr;
1142         struct req_capsule        *pill = info->mti_pill;
1143         struct mdt_rec_setxattr   *rec;
1144         ENTRY;
1145
1146
1147         CLASSERT(sizeof(struct mdt_rec_setxattr) ==
1148                          sizeof(struct mdt_rec_reint));
1149
1150         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1151         if (rec == NULL)
1152                 RETURN(-EFAULT);
1153
1154         uc->mu_fsuid  = rec->sx_fsuid;
1155         uc->mu_fsgid  = rec->sx_fsgid;
1156         uc->mu_cap    = rec->sx_cap;
1157         uc->mu_suppgids[0] = rec->sx_suppgid1;
1158         uc->mu_suppgids[1] = -1;
1159
1160         rr->rr_opcode = rec->sx_opcode;
1161         rr->rr_fid1   = &rec->sx_fid;
1162         attr->la_valid = rec->sx_valid;
1163         attr->la_ctime = rec->sx_time;
1164         attr->la_size = rec->sx_size;
1165         attr->la_flags = rec->sx_flags;
1166
1167         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
1168                 mdt_set_capainfo(info, 0, rr->rr_fid1,
1169                                  req_capsule_client_get(pill, &RMF_CAPA1));
1170         else
1171                 mdt_set_capainfo(info, 0, rr->rr_fid1, BYPASS_CAPA);
1172
1173         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1174         if (rr->rr_name == NULL)
1175                 RETURN(-EFAULT);
1176         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1177         LASSERT(rr->rr_namelen > 0);
1178
1179         rr->rr_eadatalen = req_capsule_get_size(pill, &RMF_EADATA, RCL_CLIENT);
1180         if (rr->rr_eadatalen > 0) {
1181                 rr->rr_eadata = req_capsule_client_get(pill, &RMF_EADATA);
1182                 if (rr->rr_eadata == NULL)
1183                         RETURN(-EFAULT);
1184         }
1185
1186         RETURN(0);
1187 }
1188
1189
1190 typedef int (*reint_unpacker)(struct mdt_thread_info *info);
1191
1192 static reint_unpacker mdt_reint_unpackers[REINT_MAX] = {
1193         [REINT_SETATTR]  = mdt_setattr_unpack,
1194         [REINT_CREATE]   = mdt_create_unpack,
1195         [REINT_LINK]     = mdt_link_unpack,
1196         [REINT_UNLINK]   = mdt_unlink_unpack,
1197         [REINT_RENAME]   = mdt_rename_unpack,
1198         [REINT_OPEN]     = mdt_open_unpack,
1199         [REINT_SETXATTR] = mdt_setxattr_unpack
1200 };
1201
1202 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op)
1203 {
1204         int rc;
1205         ENTRY;
1206
1207         memset(&info->mti_rr, 0, sizeof(info->mti_rr));
1208         if (op < REINT_MAX && mdt_reint_unpackers[op] != NULL) {
1209                 info->mti_rr.rr_opcode = op;
1210                 rc = mdt_reint_unpackers[op](info);
1211         } else {
1212                 CERROR("Unexpected opcode %d\n", op);
1213                 rc = -EFAULT;
1214         }
1215         RETURN(rc);
1216 }