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 & ~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 & ~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 &= ~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         /*XXX need ATTR_RAW?*/
 687         in &= ~(ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_SIZE|ATTR_BLOCKS|
 688                 ATTR_ATIME|ATTR_MTIME|ATTR_CTIME|ATTR_FROM_OPEN|
 689                 ATTR_ATIME_SET|ATTR_CTIME_SET|ATTR_MTIME_SET|
 690                 ATTR_ATTR_FLAG|ATTR_RAW|MDS_OPEN_OWNEROVERRIDE);
 691         if (in != 0)
 692                 CERROR("Unknown attr bits: %#llx\n", in);
 693         return out;
 694 }
 695 /* unpacking */
 696
 697 static int mdt_setattr_unpack_rec(struct mdt_thread_info *info)
 698 {
 699         struct md_ucred         *uc  = mdt_ucred(info);
 700         struct md_attr          *ma = &info->mti_attr;
 701         struct lu_attr          *la = &ma->ma_attr;
 702         struct req_capsule      *pill = info->mti_pill;
 703         struct mdt_reint_record *rr = &info->mti_rr;
 704         struct mdt_rec_setattr  *rec;
 705         ENTRY;
 706
 707         CLASSERT(sizeof(struct mdt_rec_setattr)== sizeof(struct mdt_rec_reint));
 708         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 709         if (rec == NULL)
 710                 RETURN(-EFAULT);
 711
 712         uc->mu_fsuid = rec->sa_fsuid;
 713         uc->mu_fsgid = rec->sa_fsgid;
 714         uc->mu_cap   = rec->sa_cap;
 715         uc->mu_suppgids[0] = rec->sa_suppgid;
 716         uc->mu_suppgids[1] = -1;
 717
 718         rr->rr_fid1 = &rec->sa_fid;
 719         la->la_valid = mdt_attr_valid_xlate(attr_unpack(rec->sa_valid), rr, ma);
 720         la->la_mode  = rec->sa_mode;
 721         la->la_flags = rec->sa_attr_flags;
 722         la->la_uid   = rec->sa_uid;
 723         la->la_gid   = rec->sa_gid;
 724         la->la_size  = rec->sa_size;
 725         la->la_blocks = rec->sa_blocks;
 726         la->la_ctime = rec->sa_ctime;
 727         la->la_atime = rec->sa_atime;
 728         la->la_mtime = rec->sa_mtime;
 729         ma->ma_valid = MA_INODE;
 730
 731         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
 732                 mdt_set_capainfo(info, 0, rr->rr_fid1,
 733                                  req_capsule_client_get(pill, &RMF_CAPA1));
 734
 735         RETURN(0);
 736 }
 737
 738 static int mdt_epoch_unpack(struct mdt_thread_info *info)
 739 {
 740         struct req_capsule *pill = info->mti_pill;
 741         ENTRY;
 742
 743         if (req_capsule_get_size(pill, &RMF_MDT_EPOCH, RCL_CLIENT))
 744                 info->mti_epoch = req_capsule_client_get(pill, &RMF_MDT_EPOCH);
 745         else
 746                 info->mti_epoch = NULL;
 747         RETURN(info->mti_epoch == NULL ? -EFAULT : 0);
 748 }
 749
 750 static inline int mdt_dlmreq_unpack(struct mdt_thread_info *info) {
 751         struct req_capsule      *pill = info->mti_pill;
 752
 753         if (req_capsule_get_size(pill, &RMF_DLM_REQ, RCL_CLIENT)) {
 754                 info->mti_dlm_req = req_capsule_client_get(pill, &RMF_DLM_REQ);
 755                 if (info->mti_dlm_req == NULL)
 756                         RETURN(-EFAULT);
 757         }
 758
 759         RETURN(0);
 760 }
 761
 762 static int mdt_setattr_unpack(struct mdt_thread_info *info)
 763 {
 764         struct md_attr          *ma = &info->mti_attr;
 765         struct req_capsule      *pill = info->mti_pill;
 766         int rc;
 767         ENTRY;
 768
 769         rc = mdt_setattr_unpack_rec(info);
 770         if (rc)
 771                 RETURN(rc);
 772
 773         /* Epoch may be absent */
 774         mdt_epoch_unpack(info);
 775
 776         ma->ma_lmm_size = req_capsule_get_size(pill, &RMF_EADATA, RCL_CLIENT);
 777         if (ma->ma_lmm_size) {
 778                 ma->ma_lmm = req_capsule_client_get(pill, &RMF_EADATA);
 779                 ma->ma_valid |= MA_LOV;
 780         }
 781
 782         ma->ma_cookie_size = req_capsule_get_size(pill, &RMF_LOGCOOKIES,
 783                                                   RCL_CLIENT);
 784         if (ma->ma_cookie_size) {
 785                 ma->ma_cookie = req_capsule_client_get(pill, &RMF_LOGCOOKIES);
 786                 ma->ma_valid |= MA_COOKIE;
 787         }
 788
 789         rc = mdt_dlmreq_unpack(info);
 790         RETURN(rc);
 791 }
 792
 793 int mdt_close_unpack(struct mdt_thread_info *info)
 794 {
 795         int rc;
 796         ENTRY;
 797
 798         rc = mdt_epoch_unpack(info);
 799         if (rc)
 800                 RETURN(rc);
 801
 802         RETURN(mdt_setattr_unpack_rec(info));
 803 }
 804
 805 static int mdt_create_unpack(struct mdt_thread_info *info)
 806 {
 807         struct md_ucred         *uc  = mdt_ucred(info);
 808         struct mdt_rec_create   *rec;
 809         struct lu_attr          *attr = &info->mti_attr.ma_attr;
 810         struct mdt_reint_record *rr = &info->mti_rr;
 811         struct req_capsule      *pill = info->mti_pill;
 812         struct md_op_spec       *sp = &info->mti_spec;
 813         int rc;
 814         ENTRY;
 815
 816         CLASSERT(sizeof(struct mdt_rec_create) == sizeof(struct mdt_rec_reint));
 817         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 818         if (rec == NULL)
 819                 RETURN(-EFAULT);
 820
 821         uc->mu_fsuid = rec->cr_fsuid;
 822         uc->mu_fsgid = rec->cr_fsgid;
 823         uc->mu_cap   = rec->cr_cap;
 824         uc->mu_suppgids[0] = rec->cr_suppgid1;
 825         uc->mu_suppgids[1] = -1;
 826
 827         rr->rr_fid1 = &rec->cr_fid1;
 828         rr->rr_fid2 = &rec->cr_fid2;
 829         attr->la_mode = rec->cr_mode;
 830         attr->la_rdev  = rec->cr_rdev;
 831         attr->la_uid   = rec->cr_fsuid;
 832         attr->la_gid   = rec->cr_fsgid;
 833         attr->la_ctime = rec->cr_time;
 834         attr->la_mtime = rec->cr_time;
 835         attr->la_atime = rec->cr_time;
 836         attr->la_valid = LA_MODE | LA_RDEV | LA_UID | LA_GID |
 837                          LA_CTIME | LA_MTIME | LA_ATIME;
 838         memset(&sp->u, 0, sizeof(sp->u));
 839         sp->sp_cr_flags = rec->cr_flags;
 840         sp->sp_ck_split = !!(rec->cr_bias & MDS_CHECK_SPLIT);
 841         info->mti_cross_ref = !!(rec->cr_bias & MDS_CROSS_REF);
 842
 843         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
 844                 mdt_set_capainfo(info, 0, rr->rr_fid1,
 845                                  req_capsule_client_get(pill, &RMF_CAPA1));
 846         mdt_set_capainfo(info, 1, rr->rr_fid2, BYPASS_CAPA);
 847
 848         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
 849         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
 850         LASSERT(rr->rr_name && rr->rr_namelen > 0);
 851
 852 #ifdef CONFIG_FS_POSIX_ACL
 853         if (sp->sp_cr_flags & MDS_CREATE_RMT_ACL) {
 854                 if (S_ISDIR(attr->la_mode))
 855                         sp->u.sp_pfid = rr->rr_fid1;
 856                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_RMT_ACL);
 857                 LASSERT(req_capsule_field_present(pill, &RMF_EADATA,
 858                                                   RCL_CLIENT));
 859                 sp->u.sp_ea.eadata = req_capsule_client_get(pill, &RMF_EADATA);
 860                 sp->u.sp_ea.eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
 861                                                              RCL_CLIENT);
 862                 sp->u.sp_ea.fid = rr->rr_fid1;
 863                 RETURN(0);
 864         }
 865 #endif
 866         if (S_ISDIR(attr->la_mode)) {
 867                 /* pass parent fid for cross-ref cases */
 868                 sp->u.sp_pfid = rr->rr_fid1;
 869                 if (sp->sp_cr_flags & MDS_CREATE_SLAVE_OBJ) {
 870                         /* create salve object req, need
 871                          * unpack split ea here
 872                          */
 873                        req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_SLAVE);
 874                        LASSERT(req_capsule_field_present(pill, &RMF_EADATA,
 875                                                          RCL_CLIENT));
 876                        sp->u.sp_ea.eadata = req_capsule_client_get(pill,
 877                                                                    &RMF_EADATA);
 878                        sp->u.sp_ea.eadatalen = req_capsule_get_size(pill,
 879                                                                     &RMF_EADATA,
 880                                                                     RCL_CLIENT);
 881                        sp->u.sp_ea.fid = rr->rr_fid1;
 882                        RETURN(0);
 883                 }
 884                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_RMT_ACL);
 885         } else if (S_ISLNK(attr->la_mode)) {
 886                 const char *tgt = NULL;
 887
 888                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_SYM);
 889                 if (req_capsule_get_size(pill, &RMF_SYMTGT, RCL_CLIENT)) {
 890                         tgt = req_capsule_client_get(pill, &RMF_SYMTGT);
 891                         sp->u.sp_symname = tgt;
 892                 }
 893                 if (tgt == NULL)
 894                         RETURN(-EFAULT);
 895         } else {
 896                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_RMT_ACL);
 897         }
 898         rc = mdt_dlmreq_unpack(info);
 899         RETURN(rc);
 900 }
 901
 902 static int mdt_link_unpack(struct mdt_thread_info *info)
 903 {
 904         struct md_ucred         *uc  = mdt_ucred(info);
 905         struct mdt_rec_link     *rec;
 906         struct lu_attr          *attr = &info->mti_attr.ma_attr;
 907         struct mdt_reint_record *rr = &info->mti_rr;
 908         struct req_capsule      *pill = info->mti_pill;
 909         int rc;
 910         ENTRY;
 911
 912         CLASSERT(sizeof(struct mdt_rec_link) == sizeof(struct mdt_rec_reint));
 913         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 914         if (rec == NULL)
 915                 RETURN(-EFAULT);
 916
 917         uc->mu_fsuid = rec->lk_fsuid;
 918         uc->mu_fsgid = rec->lk_fsgid;
 919         uc->mu_cap   = rec->lk_cap;
 920         uc->mu_suppgids[0] = rec->lk_suppgid1;
 921         uc->mu_suppgids[1] = rec->lk_suppgid2;
 922
 923         attr->la_uid = rec->lk_fsuid;
 924         attr->la_gid = rec->lk_fsgid;
 925         rr->rr_fid1 = &rec->lk_fid1;
 926         rr->rr_fid2 = &rec->lk_fid2;
 927         attr->la_ctime = rec->lk_time;
 928         attr->la_mtime = rec->lk_time;
 929         attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME;
 930
 931         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
 932                 mdt_set_capainfo(info, 0, rr->rr_fid1,
 933                                  req_capsule_client_get(pill, &RMF_CAPA1));
 934         if (req_capsule_get_size(pill, &RMF_CAPA2, RCL_CLIENT))
 935                 mdt_set_capainfo(info, 1, rr->rr_fid2,
 936                                  req_capsule_client_get(pill, &RMF_CAPA2));
 937
 938         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
 939         if (rr->rr_name == NULL)
 940                 RETURN(-EFAULT);
 941         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
 942         LASSERT(rr->rr_namelen > 0);
 943         info->mti_spec.sp_ck_split = !!(rec->lk_bias & MDS_CHECK_SPLIT);
 944         info->mti_cross_ref = !!(rec->lk_bias & MDS_CROSS_REF);
 945
 946         rc = mdt_dlmreq_unpack(info);
 947         RETURN(rc);
 948 }
 949
 950 static int mdt_unlink_unpack(struct mdt_thread_info *info)
 951 {
 952         struct md_ucred         *uc  = mdt_ucred(info);
 953         struct mdt_rec_unlink   *rec;
 954         struct md_attr          *ma = &info->mti_attr;
 955         struct lu_attr          *attr = &info->mti_attr.ma_attr;
 956         struct mdt_reint_record *rr = &info->mti_rr;
 957         struct req_capsule      *pill = info->mti_pill;
 958         int rc;
 959         ENTRY;
 960
 961         CLASSERT(sizeof(struct mdt_rec_unlink) == sizeof(struct mdt_rec_reint));
 962         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 963         if (rec == NULL)
 964                 RETURN(-EFAULT);
 965
 966         uc->mu_fsuid = rec->ul_fsuid;
 967         uc->mu_fsgid = rec->ul_fsgid;
 968         uc->mu_cap   = rec->ul_cap;
 969         uc->mu_suppgids[0] = rec->ul_suppgid1;
 970         uc->mu_suppgids[1] = -1;
 971
 972         attr->la_uid = rec->ul_fsuid;
 973         attr->la_gid = rec->ul_fsgid;
 974         rr->rr_fid1 = &rec->ul_fid1;
 975         rr->rr_fid2 = &rec->ul_fid2;
 976         attr->la_ctime = rec->ul_time;
 977         attr->la_mtime = rec->ul_time;
 978         attr->la_mode  = rec->ul_mode;
 979         attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME | LA_MODE;
 980
 981         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
 982                 mdt_set_capainfo(info, 0, rr->rr_fid1,
 983                                  req_capsule_client_get(pill, &RMF_CAPA1));
 984
 985         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
 986         if (rr->rr_name == NULL)
 987                 RETURN(-EFAULT);
 988         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
 989         LASSERT(rr->rr_namelen > 0);
 990         info->mti_spec.sp_ck_split = !!(rec->ul_bias & MDS_CHECK_SPLIT);
 991         info->mti_cross_ref = !!(rec->ul_bias & MDS_CROSS_REF);
 992         if (rec->ul_bias & MDS_VTX_BYPASS)
 993                 ma->ma_attr_flags |= MDS_VTX_BYPASS;
 994         else
 995                 ma->ma_attr_flags &= ~MDS_VTX_BYPASS;
 996
 997         rc = mdt_dlmreq_unpack(info);
 998         RETURN(rc);
 999 }
1000
1001 static int mdt_rename_unpack(struct mdt_thread_info *info)
1002 {
1003         struct md_ucred         *uc = mdt_ucred(info);
1004         struct mdt_rec_rename   *rec;
1005         struct md_attr          *ma = &info->mti_attr;
1006         struct lu_attr          *attr = &info->mti_attr.ma_attr;
1007         struct mdt_reint_record *rr = &info->mti_rr;
1008         struct req_capsule      *pill = info->mti_pill;
1009         int rc;
1010         ENTRY;
1011
1012         CLASSERT(sizeof(struct mdt_rec_rename) == sizeof(struct mdt_rec_reint));
1013         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1014         if (rec == NULL)
1015                 RETURN(-EFAULT);
1016
1017         uc->mu_fsuid = rec->rn_fsuid;
1018         uc->mu_fsgid = rec->rn_fsgid;
1019         uc->mu_cap   = rec->rn_cap;
1020         uc->mu_suppgids[0] = rec->rn_suppgid1;
1021         uc->mu_suppgids[1] = rec->rn_suppgid2;
1022
1023         attr->la_uid = rec->rn_fsuid;
1024         attr->la_gid = rec->rn_fsgid;
1025         rr->rr_fid1 = &rec->rn_fid1;
1026         rr->rr_fid2 = &rec->rn_fid2;
1027         attr->la_ctime = rec->rn_time;
1028         attr->la_mtime = rec->rn_time;
1029         /* rename_tgt contains the mode already */
1030         attr->la_mode = rec->rn_mode;
1031         attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME | LA_MODE;
1032
1033         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
1034                 mdt_set_capainfo(info, 0, rr->rr_fid1,
1035                                  req_capsule_client_get(pill, &RMF_CAPA1));
1036         if (req_capsule_get_size(pill, &RMF_CAPA2, RCL_CLIENT))
1037                 mdt_set_capainfo(info, 1, rr->rr_fid2,
1038                                  req_capsule_client_get(pill, &RMF_CAPA2));
1039
1040         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1041         rr->rr_tgt = req_capsule_client_get(pill, &RMF_SYMTGT);
1042         if (rr->rr_name == NULL || rr->rr_tgt == NULL)
1043                 RETURN(-EFAULT);
1044         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1045         LASSERT(rr->rr_namelen > 0);
1046         rr->rr_tgtlen = req_capsule_get_size(pill, &RMF_SYMTGT, RCL_CLIENT) - 1;
1047         LASSERT(rr->rr_tgtlen > 0);
1048         info->mti_spec.sp_ck_split = !!(rec->rn_bias & MDS_CHECK_SPLIT);
1049         info->mti_cross_ref = !!(rec->rn_bias & MDS_CROSS_REF);
1050         if (rec->rn_bias & MDS_VTX_BYPASS)
1051                 ma->ma_attr_flags |= MDS_VTX_BYPASS;
1052         else
1053                 ma->ma_attr_flags &= ~MDS_VTX_BYPASS;
1054
1055         rc = mdt_dlmreq_unpack(info);
1056         RETURN(rc);
1057 }
1058
1059 static int mdt_open_unpack(struct mdt_thread_info *info)
1060 {
1061         struct md_ucred         *uc = mdt_ucred(info);
1062         struct mdt_rec_create   *rec;
1063         struct lu_attr          *attr = &info->mti_attr.ma_attr;
1064         struct req_capsule      *pill = info->mti_pill;
1065         struct mdt_reint_record *rr   = &info->mti_rr;
1066         struct ptlrpc_request   *req  = mdt_info_req(info);
1067         struct md_op_spec       *sp   = &info->mti_spec;
1068         ENTRY;
1069
1070         CLASSERT(sizeof(struct mdt_rec_create) == sizeof(struct mdt_rec_reint));
1071         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1072         if (rec == NULL)
1073                 RETURN(-EFAULT);
1074
1075         uc->mu_fsuid = rec->cr_fsuid;
1076         uc->mu_fsgid = rec->cr_fsgid;
1077         uc->mu_cap   = rec->cr_cap;
1078         uc->mu_suppgids[0] = rec->cr_suppgid1;
1079         uc->mu_suppgids[1] = rec->cr_suppgid2;
1080
1081         rr->rr_fid1   = &rec->cr_fid1;
1082         rr->rr_fid2   = &rec->cr_fid2;
1083         rr->rr_handle = &rec->cr_old_handle;
1084         attr->la_mode = rec->cr_mode;
1085         attr->la_rdev  = rec->cr_rdev;
1086         attr->la_uid   = rec->cr_fsuid;
1087         attr->la_gid   = rec->cr_fsgid;
1088         attr->la_ctime = rec->cr_time;
1089         attr->la_mtime = rec->cr_time;
1090         attr->la_atime = rec->cr_time;
1091         attr->la_valid = LA_MODE  | LA_RDEV  | LA_UID   | LA_GID |
1092                          LA_CTIME | LA_MTIME | LA_ATIME;
1093         memset(&info->mti_spec.u, 0, sizeof(info->mti_spec.u));
1094         info->mti_spec.sp_cr_flags = rec->cr_flags;
1095         info->mti_replayepoch = rec->cr_ioepoch;
1096
1097         info->mti_spec.sp_ck_split = !!(rec->cr_bias & MDS_CHECK_SPLIT);
1098         info->mti_cross_ref = !!(rec->cr_bias & MDS_CROSS_REF);
1099
1100         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
1101                 mdt_set_capainfo(info, 0, rr->rr_fid1,
1102                                  req_capsule_client_get(pill, &RMF_CAPA1));
1103         if ((lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) &&
1104             (req_capsule_get_size(pill, &RMF_CAPA2, RCL_CLIENT))) {
1105 #if 0
1106                 mdt_set_capainfo(info, 1, rr->rr_fid2,
1107                                  req_capsule_client_get(pill, &RMF_CAPA2));
1108 #else
1109                 /*
1110                  * FIXME: capa in replay open request might have expired,
1111                  * bypass capa check. Security hole?
1112                  */
1113                 mdt_set_capainfo(info, 0, rr->rr_fid1, BYPASS_CAPA);
1114                 mdt_set_capainfo(info, 1, rr->rr_fid2, BYPASS_CAPA);
1115 #endif
1116         }
1117
1118         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1119         if (rr->rr_name == NULL)
1120                 RETURN(-EFAULT);
1121         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1122
1123         sp->u.sp_ea.eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
1124                                                      RCL_CLIENT);
1125         if (sp->u.sp_ea.eadatalen) {
1126                 sp->u.sp_ea.eadata = req_capsule_client_get(pill, &RMF_EADATA);
1127                 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
1128                         sp->u.sp_ea.no_lov_create = 1;
1129         }
1130
1131         RETURN(0);
1132 }
1133
1134 static int mdt_setxattr_unpack(struct mdt_thread_info *info)
1135 {
1136         struct mdt_reint_record   *rr   = &info->mti_rr;
1137         struct md_ucred           *uc   = mdt_ucred(info);
1138         struct lu_attr            *attr = &info->mti_attr.ma_attr;
1139         struct req_capsule        *pill = info->mti_pill;
1140         struct mdt_rec_setxattr   *rec;
1141         ENTRY;
1142
1143
1144         CLASSERT(sizeof(struct mdt_rec_setxattr) ==
1145                          sizeof(struct mdt_rec_reint));
1146
1147         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1148         if (rec == NULL)
1149                 RETURN(-EFAULT);
1150
1151         uc->mu_fsuid  = rec->sx_fsuid;
1152         uc->mu_fsgid  = rec->sx_fsgid;
1153         uc->mu_cap    = rec->sx_cap;
1154         uc->mu_suppgids[0] = rec->sx_suppgid1;
1155         uc->mu_suppgids[1] = -1;
1156
1157         rr->rr_opcode = rec->sx_opcode;
1158         rr->rr_fid1   = &rec->sx_fid;
1159         attr->la_valid = rec->sx_valid;
1160         attr->la_ctime = rec->sx_time;
1161         attr->la_size = rec->sx_size;
1162         attr->la_flags = rec->sx_flags;
1163
1164         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
1165                 mdt_set_capainfo(info, 0, rr->rr_fid1,
1166                                  req_capsule_client_get(pill, &RMF_CAPA1));
1167         else
1168                 mdt_set_capainfo(info, 0, rr->rr_fid1, BYPASS_CAPA);
1169
1170         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1171         if (rr->rr_name == NULL)
1172                 RETURN(-EFAULT);
1173         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1174         LASSERT(rr->rr_namelen > 0);
1175
1176         rr->rr_eadatalen = req_capsule_get_size(pill, &RMF_EADATA, RCL_CLIENT);
1177         if (rr->rr_eadatalen > 0) {
1178                 rr->rr_eadata = req_capsule_client_get(pill, &RMF_EADATA);
1179                 if (rr->rr_eadata == NULL)
1180                         RETURN(-EFAULT);
1181         }
1182
1183         RETURN(0);
1184 }
1185
1186
1187 typedef int (*reint_unpacker)(struct mdt_thread_info *info);
1188
1189 static reint_unpacker mdt_reint_unpackers[REINT_MAX] = {
1190         [REINT_SETATTR]  = mdt_setattr_unpack,
1191         [REINT_CREATE]   = mdt_create_unpack,
1192         [REINT_LINK]     = mdt_link_unpack,
1193         [REINT_UNLINK]   = mdt_unlink_unpack,
1194         [REINT_RENAME]   = mdt_rename_unpack,
1195         [REINT_OPEN]     = mdt_open_unpack,
1196         [REINT_SETXATTR] = mdt_setxattr_unpack
1197 };
1198
1199 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op)
1200 {
1201         int rc;
1202         ENTRY;
1203
1204         memset(&info->mti_rr, 0, sizeof(info->mti_rr));
1205         if (op < REINT_MAX && mdt_reint_unpackers[op] != NULL) {
1206                 info->mti_rr.rr_opcode = op;
1207                 rc = mdt_reint_unpackers[op](info);
1208         } else {
1209                 CERROR("Unexpected opcode %d\n", op);
1210                 rc = -EFAULT;
1211         }
1212         RETURN(rc);
1213 }