lustre/mdt/mdt_lib.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  lustre/mdt/mdt_lib.c
   5  *  Lustre Metadata Target (mdt) request unpacking helper.
   6  *
   7  *  Copyright (c) 2006 Cluster File Systems, Inc.
   8  *   Author: Peter Braam <braam@clusterfs.com>
   9  *   Author: Andreas Dilger <adilger@clusterfs.com>
  10  *   Author: Phil Schwan <phil@clusterfs.com>
  11  *   Author: Mike Shaver <shaver@clusterfs.com>
  12  *   Author: Nikita Danilov <nikita@clusterfs.com>
  13  *   Author: Huang Hua <huanghua@clusterfs.com>
  14  *   Author: Fan Yong <fanyong@clusterfs.com>
  15  *
  16  *
  17  *   This file is part of the Lustre file system, http://www.lustre.org
  18  *   Lustre is a trademark of Cluster File Systems, Inc.
  19  *
  20  *   You may have signed or agreed to another license before downloading
  21  *   this software.  If so, you are bound by the terms and conditions
  22  *   of that agreement, and the following does not apply to you.  See the
  23  *   LICENSE file included with this distribution for more information.
  24  *
  25  *   If you did not agree to a different license, then this copy of Lustre
  26  *   is open source software; you can redistribute it and/or modify it
  27  *   under the terms of version 2 of the GNU General Public License as
  28  *   published by the Free Software Foundation.
  29  *
  30  *   In either case, Lustre is distributed in the hope that it will be
  31  *   useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  32  *   of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  33  *   license text for more details.
  34  */
  35
  36
  37 #ifndef EXPORT_SYMTAB
  38 # define EXPORT_SYMTAB
  39 #endif
  40 #define DEBUG_SUBSYSTEM S_MDS
  41
  42 #include "mdt_internal.h"
  43
  44
  45 typedef enum ucred_init_type {
  46         NONE_INIT       = 0,
  47         BODY_INIT       = 1,
  48         REC_INIT        = 2
  49 } ucred_init_type_t;
  50
  51 void mdt_exit_ucred(struct mdt_thread_info *info)
  52 {
  53         struct md_ucred   *uc  = mdt_ucred(info);
  54         struct mdt_device *mdt = info->mti_mdt;
  55
  56         if (uc->mu_valid != UCRED_INIT) {
  57                 uc->mu_suppgids[0] = uc->mu_suppgids[1] = -1;
  58                 if (uc->mu_ginfo) {
  59                         groups_free(uc->mu_ginfo);
  60                         uc->mu_ginfo = NULL;
  61                 }
  62                 if (uc->mu_identity) {
  63                         mdt_identity_put(mdt->mdt_identity_cache,
  64                                          uc->mu_identity);
  65                         uc->mu_identity = NULL;
  66                 }
  67                 uc->mu_valid = UCRED_INIT;
  68         }
  69 }
  70
  71 /* XXX: root_squash will be redesigned in Lustre 1.7.
  72  * Do not root_squash for inter-MDS operations */
  73 static int mdt_root_squash(struct mdt_thread_info *info)
  74 {
  75         return 0;
  76 }
  77
  78 static int new_init_ucred(struct mdt_thread_info *info, ucred_init_type_t type,
  79                           void *buf)
  80 {
  81         struct ptlrpc_request   *req = mdt_info_req(info);
  82         struct mdt_export_data  *med = mdt_req2med(req);
  83         struct mdt_device       *mdt = info->mti_mdt;
  84         struct ptlrpc_user_desc *pud = req->rq_user_desc;
  85         struct md_ucred         *ucred = mdt_ucred(info);
  86         lnet_nid_t              peernid = req->rq_peer.nid;
  87         __u32                    perm = 0;
  88         int                     setuid;
  89         int                     setgid;
  90         int                     rc = 0;
  91
  92         ENTRY;
  93
  94         LASSERT(req->rq_auth_gss);
  95         LASSERT(!req->rq_auth_usr_mdt);
  96         LASSERT(req->rq_user_desc);
  97
  98         ucred->mu_valid = UCRED_INVALID;
  99
 100         ucred->mu_o_uid   = pud->pud_uid;
 101         ucred->mu_o_gid   = pud->pud_gid;
 102         ucred->mu_o_fsuid = pud->pud_fsuid;
 103         ucred->mu_o_fsgid = pud->pud_fsgid;
 104
 105         if (type == BODY_INIT) {
 106                 struct mdt_body *body = (struct mdt_body *)buf;
 107
 108                 ucred->mu_suppgids[0] = body->suppgid;
 109                 ucred->mu_suppgids[1] = -1;
 110         }
 111
 112         /* sanity check: we expect the uid which client claimed is true */
 113         if (med->med_rmtclient) {
 114                 if (req->rq_auth_mapped_uid == INVALID_UID) {
 115                         CWARN("remote user not mapped, deny access!\n");
 116                         RETURN(-EACCES);
 117                 }
 118
 119                 if (ptlrpc_user_desc_do_idmap(req, pud))
 120                         RETURN(-EACCES);
 121
 122                 if (req->rq_auth_mapped_uid != pud->pud_uid) {
 123                         CERROR("remote client "LPU64": auth/mapped uid %u/%u "
 124                                "while client claim %u:%u/%u:%u\n",
 125                                peernid, req->rq_auth_uid,
 126                                req->rq_auth_mapped_uid,
 127                                pud->pud_uid, pud->pud_gid,
 128                                pud->pud_fsuid, pud->pud_fsgid);
 129                         RETURN(-EACCES);
 130                 }
 131         } else {
 132                 if (req->rq_auth_uid != pud->pud_uid) {
 133                         CERROR("local client "LPU64": auth uid %u "
 134                                "while client claim %u:%u/%u:%u\n",
 135                                peernid, req->rq_auth_uid, pud->pud_uid,
 136                                pud->pud_gid, pud->pud_fsuid, pud->pud_fsgid);
 137                         RETURN(-EACCES);
 138                 }
 139         }
 140
 141         if (is_identity_get_disabled(mdt->mdt_identity_cache)) {
 142                 if (med->med_rmtclient) {
 143                         CERROR("remote client must run with identity_get "
 144                                "enabled!\n");
 145                         RETURN(-EACCES);
 146                 } else {
 147                         ucred->mu_identity = NULL;
 148                         perm = CFS_SETUID_PERM | CFS_SETGID_PERM |
 149                                CFS_SETGRP_PERM;
 150                 }
 151         } else {
 152                 ucred->mu_identity = mdt_identity_get(mdt->mdt_identity_cache,
 153                                                       pud->pud_uid);
 154                 if (!ucred->mu_identity) {
 155                         CERROR("Deny access without identity: uid %d\n",
 156                                pud->pud_uid);
 157                 RETURN(-EACCES);
 158                 } else {
 159                         perm = mdt_identity_get_perm(ucred->mu_identity,
 160                                                    med->med_rmtclient,
 161                                                    peernid);
 162                 }
 163         }
 164
 165         /* find out the setuid/setgid attempt */
 166         setuid = (pud->pud_uid != pud->pud_fsuid);
 167         setgid = ((pud->pud_gid != pud->pud_fsgid) ||
 168                   (ucred->mu_identity &&
 169                   (pud->pud_gid != ucred->mu_identity->mi_gid)));
 170
 171         /* check permission of setuid */
 172         if (setuid && !(perm & CFS_SETUID_PERM)) {
 173                 CWARN("mdt blocked setuid attempt (%u -> %u) from "
 174                       LPX64"\n", pud->pud_uid, pud->pud_fsuid, peernid);
 175                 GOTO(out, rc = -EACCES);
 176         }
 177
 178         /* check permission of setgid */
 179         if (setgid && !(perm & CFS_SETGID_PERM)) {
 180                 CWARN("mdt blocked setgid attempt (%u:%u/%u:%u -> %u) "
 181                       "from "LPX64"\n", pud->pud_uid, pud->pud_gid,
 182                       pud->pud_fsuid, pud->pud_fsgid,
 183                       ucred->mu_identity->mi_gid, peernid);
 184                 GOTO(out, rc = -EACCES);
 185         }
 186
 187         /*
 188          * NB: remote client not allowed to setgroups anyway.
 189          */
 190         if (!med->med_rmtclient && perm & CFS_SETGRP_PERM) {
 191                 if (pud->pud_ngroups) {
 192                 /* setgroups for local client */
 193                         ucred->mu_ginfo = groups_alloc(pud->pud_ngroups);
 194                         if (!ucred->mu_ginfo) {
 195                         CERROR("failed to alloc %d groups\n",
 196                                pud->pud_ngroups);
 197                         GOTO(out, rc = -ENOMEM);
 198                 }
 199
 200                         lustre_groups_from_list(ucred->mu_ginfo,
 201                                                 pud->pud_groups);
 202                         lustre_groups_sort(ucred->mu_ginfo);
 203         } else {
 204                 ucred->mu_ginfo = NULL;
 205         }
 206         } else {
 207                 ucred->mu_suppgids[0] = -1;
 208                 ucred->mu_suppgids[1] = -1;
 209                 ucred->mu_ginfo = NULL;
 210         }
 211
 212         ucred->mu_uid   = pud->pud_uid;
 213         ucred->mu_gid   = pud->pud_gid;
 214         ucred->mu_fsuid = pud->pud_fsuid;
 215         ucred->mu_fsgid = pud->pud_fsgid;
 216
 217         /* XXX: need to process root_squash here. */
 218         mdt_root_squash(info);
 219
 220         /* remove fs privilege for non-root user */
 221         if (ucred->mu_fsuid)
 222                 ucred->mu_cap = pud->pud_cap & ~CAP_FS_MASK;
 223         else
 224                 ucred->mu_cap = pud->pud_cap;
 225         ucred->mu_valid = UCRED_NEW;
 226
 227         EXIT;
 228
 229 out:
 230         if (rc) {
 231                 if (ucred->mu_ginfo) {
 232                         groups_free(ucred->mu_ginfo);
 233                         ucred->mu_ginfo = NULL;
 234                 }
 235                 if (ucred->mu_identity) {
 236                         mdt_identity_put(mdt->mdt_identity_cache,
 237                                          ucred->mu_identity);
 238                         ucred->mu_identity = NULL;
 239                 }
 240         }
 241
 242         return rc;
 243 }
 244
 245 int mdt_check_ucred(struct mdt_thread_info *info)
 246 {
 247         struct ptlrpc_request   *req = mdt_info_req(info);
 248         struct mdt_export_data  *med = mdt_req2med(req);
 249         struct mdt_device       *mdt = info->mti_mdt;
 250         struct ptlrpc_user_desc *pud = req->rq_user_desc;
 251         struct md_ucred         *ucred = mdt_ucred(info);
 252         struct md_identity      *identity = NULL;
 253         lnet_nid_t              peernid = req->rq_peer.nid;
 254         __u32                    perm = 0;
 255         int                      setuid;
 256         int                      setgid;
 257         int                      rc = 0;
 258
 259         ENTRY;
 260
 261         if ((ucred->mu_valid == UCRED_OLD) || (ucred->mu_valid == UCRED_NEW))
 262                 RETURN(0);
 263
 264         if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc)
 265                 RETURN(0);
 266
 267         /* sanity check: if we use strong authentication, we expect the
 268          * uid which client claimed is true */
 269                 if (med->med_rmtclient) {
 270                         if (req->rq_auth_mapped_uid == INVALID_UID) {
 271                                 CWARN("remote user not mapped, deny access!\n");
 272                                 RETURN(-EACCES);
 273                         }
 274
 275                         if (ptlrpc_user_desc_do_idmap(req, pud))
 276                                 RETURN(-EACCES);
 277
 278                         if (req->rq_auth_mapped_uid != pud->pud_uid) {
 279                         CERROR("remote client "LPU64": auth/mapped uid %u/%u "
 280                                        "while client claim %u:%u/%u:%u\n",
 281                                peernid, req->rq_auth_uid,
 282                                req->rq_auth_mapped_uid,
 283                                pud->pud_uid, pud->pud_gid,
 284                                pud->pud_fsuid, pud->pud_fsgid);
 285                                 RETURN(-EACCES);
 286                         }
 287                 } else {
 288                         if (req->rq_auth_uid != pud->pud_uid) {
 289                                 CERROR("local client "LPU64": auth uid %u "
 290                                        "while client claim %u:%u/%u:%u\n",
 291                                        peernid, req->rq_auth_uid, pud->pud_uid,
 292                                        pud->pud_gid, pud->pud_fsuid,
 293                                        pud->pud_fsgid);
 294                                 RETURN(-EACCES);
 295                         }
 296                 }
 297
 298         if (is_identity_get_disabled(mdt->mdt_identity_cache)) {
 299                 if (med->med_rmtclient) {
 300                         CERROR("remote client must run with identity_get "
 301                                "enabled!\n");
 302                         RETURN(-EACCES);
 303                 }
 304                 RETURN(0);
 305         }
 306
 307         identity = mdt_identity_get(mdt->mdt_identity_cache, pud->pud_uid);
 308         if (!identity) {
 309                 CERROR("Deny access without identity: uid %d\n", pud->pud_uid);
 310                 RETURN(-EACCES);
 311         }
 312
 313         perm = mdt_identity_get_perm(identity, med->med_rmtclient, peernid);
 314         /* find out the setuid/setgid attempt */
 315         setuid = (pud->pud_uid != pud->pud_fsuid);
 316         setgid = (pud->pud_gid != pud->pud_fsgid ||
 317                   pud->pud_gid != identity->mi_gid);
 318
 319         /* check permission of setuid */
 320         if (setuid && !(perm & CFS_SETUID_PERM)) {
 321                 CWARN("mdt blocked setuid attempt (%u -> %u) from "
 322                       LPX64"\n", pud->pud_uid, pud->pud_fsuid, peernid);
 323                 GOTO(out, rc = -EACCES);
 324         }
 325
 326         /* check permission of setgid */
 327         if (setgid && !(perm & CFS_SETGID_PERM)) {
 328                 CWARN("mdt blocked setgid attempt (%u:%u/%u:%u -> %u) "
 329                       "from "LPX64"\n", pud->pud_uid, pud->pud_gid,
 330                       pud->pud_fsuid, pud->pud_fsgid, identity->mi_gid,
 331                       peernid);
 332                 GOTO(out, rc = -EACCES);
 333         }
 334
 335         EXIT;
 336
 337 out:
 338         mdt_identity_put(mdt->mdt_identity_cache, identity);
 339         return rc;
 340 }
 341
 342 static int old_init_ucred(struct mdt_thread_info *info,
 343                           struct mdt_body *body)
 344 {
 345         struct md_ucred *uc = mdt_ucred(info);
 346         struct mdt_device  *mdt = info->mti_mdt;
 347         struct md_identity *identity = NULL;
 348
 349         ENTRY;
 350
 351         uc->mu_valid = UCRED_INVALID;
 352         uc->mu_o_uid = uc->mu_uid = body->uid;
 353         uc->mu_o_gid = uc->mu_gid = body->gid;
 354         uc->mu_o_fsuid = uc->mu_fsuid = body->fsuid;
 355         uc->mu_o_fsgid = uc->mu_fsgid = body->fsgid;
 356         uc->mu_suppgids[0] = body->suppgid;
 357         uc->mu_suppgids[1] = -1;
 358         uc->mu_ginfo = NULL;
 359         if (!is_identity_get_disabled(mdt->mdt_identity_cache)) {
 360                 identity = mdt_identity_get(mdt->mdt_identity_cache,
 361                                             uc->mu_fsuid);
 362                 if (!identity) {
 363                         CERROR("Deny access without identity: uid %d\n",
 364                                uc->mu_fsuid);
 365                         RETURN(-EACCES);
 366                 }
 367         }
 368         uc->mu_identity = identity;
 369
 370         /* XXX: need to process root_squash here. */
 371         mdt_root_squash(info);
 372
 373         /* remove fs privilege for non-root user */
 374         if (uc->mu_fsuid)
 375                 uc->mu_cap = body->capability & ~CAP_FS_MASK;
 376         else
 377                 uc->mu_cap = body->capability;
 378         uc->mu_valid = UCRED_OLD;
 379
 380         RETURN(0);
 381 }
 382
 383 static int old_init_ucred_reint(struct mdt_thread_info *info)
 384 {
 385         struct md_ucred *uc = mdt_ucred(info);
 386         struct mdt_device  *mdt = info->mti_mdt;
 387         struct md_identity *identity = NULL;
 388
 389         ENTRY;
 390
 391         uc->mu_valid = UCRED_INVALID;
 392         uc->mu_o_uid = uc->mu_o_fsuid = uc->mu_uid = uc->mu_fsuid;
 393         uc->mu_o_gid = uc->mu_o_fsgid = uc->mu_gid = uc->mu_fsgid;
 394         uc->mu_ginfo = NULL;
 395         if (!is_identity_get_disabled(mdt->mdt_identity_cache)) {
 396                 identity = mdt_identity_get(mdt->mdt_identity_cache,
 397                                             uc->mu_fsuid);
 398                 if (!identity) {
 399                         CERROR("Deny access without identity: uid %d\n",
 400                                uc->mu_fsuid);
 401                         RETURN(-EACCES);
 402         }
 403         }
 404         uc->mu_identity = identity;
 405
 406         /* XXX: need to process root_squash here. */
 407         mdt_root_squash(info);
 408
 409         /* remove fs privilege for non-root user */
 410         if (uc->mu_fsuid)
 411                 uc->mu_cap &= ~CAP_FS_MASK;
 412         uc->mu_valid = UCRED_OLD;
 413
 414         RETURN(0);
 415 }
 416
 417 int mdt_init_ucred(struct mdt_thread_info *info, struct mdt_body *body)
 418 {
 419         struct ptlrpc_request *req = mdt_info_req(info);
 420         struct md_ucred       *uc  = mdt_ucred(info);
 421
 422         if ((uc->mu_valid == UCRED_OLD) || (uc->mu_valid == UCRED_NEW))
 423                 return 0;
 424
 425         mdt_exit_ucred(info);
 426
 427         if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc)
 428                 return old_init_ucred(info, body);
 429         else
 430                 return new_init_ucred(info, BODY_INIT, body);
 431 }
 432
 433 int mdt_init_ucred_reint(struct mdt_thread_info *info)
 434 {
 435         struct ptlrpc_request *req = mdt_info_req(info);
 436         struct md_ucred       *uc  = mdt_ucred(info);
 437
 438         if ((uc->mu_valid == UCRED_OLD) || (uc->mu_valid == UCRED_NEW))
 439                 return 0;
 440
 441         mdt_exit_ucred(info);
 442
 443         if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc)
 444                 return old_init_ucred_reint(info);
 445         else
 446                 return new_init_ucred(info, REC_INIT, NULL);
 447 }
 448
 449 /* copied from lov/lov_ea.c, just for debugging, will be removed later */
 450 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm)
 451 {
 452         const struct lov_ost_data_v1 *lod;
 453         int i;
 454         __s16 stripe_count =
 455                 le16_to_cpu(((struct lov_user_md*)lmm)->lmm_stripe_count);
 456
 457         CDEBUG(level, "objid "LPX64", magic 0x%08X, pattern %#X\n",
 458                le64_to_cpu(lmm->lmm_object_id), le32_to_cpu(lmm->lmm_magic),
 459                le32_to_cpu(lmm->lmm_pattern));
 460         CDEBUG(level,"stripe_size=0x%x, stripe_count=0x%x\n",
 461                le32_to_cpu(lmm->lmm_stripe_size),
 462                le32_to_cpu(lmm->lmm_stripe_count));
 463         LASSERT(stripe_count <= (__s16)LOV_MAX_STRIPE_COUNT);
 464         for (i = 0, lod = lmm->lmm_objects; i < stripe_count; i++, lod++) {
 465                 CDEBUG(level, "stripe %u idx %u subobj "LPX64"/"LPX64"\n",
 466                        i, le32_to_cpu(lod->l_ost_idx),
 467                        le64_to_cpu(lod->l_object_gr),
 468                        le64_to_cpu(lod->l_object_id));
 469         }
 470 }
 471
 472 void mdt_shrink_reply(struct mdt_thread_info *info)
 473 {
 474         struct req_capsule *pill = info->mti_pill;
 475         struct mdt_body    *body;
 476         int                md_size;
 477         int                acl_size;
 478         ENTRY;
 479
 480         body = req_capsule_server_get(pill, &RMF_MDT_BODY);
 481         LASSERT(body != NULL);
 482
 483         if (body->valid & (OBD_MD_FLDIREA | OBD_MD_FLEASIZE | OBD_MD_LINKNAME))
 484                 md_size = body->eadatasize;
 485         else
 486                 md_size = 0;
 487
 488         acl_size = body->aclsize;
 489
 490         CDEBUG(D_INFO, "Shrink to md_size = %d cookie/acl_size = %d"
 491                         " MDSCAPA = "LPX64", OSSCAPA = "LPX64"\n",
 492                         md_size, acl_size,
 493                         body->valid & OBD_MD_FLMDSCAPA,
 494                         body->valid & OBD_MD_FLOSSCAPA);
 495 /*
 496             &RMF_MDT_BODY,
 497             &RMF_MDT_MD,
 498             &RMF_ACL, or &RMF_LOGCOOKIES
 499 (optional)  &RMF_CAPA1,
 500 (optional)  &RMF_CAPA2,
 501 (optional)  something else
 502 */
 503
 504         if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
 505                 req_capsule_shrink(pill, &RMF_MDT_MD, md_size,
 506                                    RCL_SERVER);
 507         if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
 508                 req_capsule_shrink(pill, &RMF_ACL, acl_size, RCL_SERVER);
 509         else if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
 510                 req_capsule_shrink(pill, &RMF_LOGCOOKIES,
 511                                             acl_size, RCL_SERVER);
 512
 513         if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_SERVER) &&
 514                     !(body->valid & OBD_MD_FLMDSCAPA))
 515                 req_capsule_shrink(pill, &RMF_CAPA1, 0, RCL_SERVER);
 516
 517         if (req_capsule_has_field(pill, &RMF_CAPA2, RCL_SERVER) &&
 518                 !(body->valid & OBD_MD_FLOSSCAPA))
 519                 req_capsule_shrink(pill, &RMF_CAPA2, 0, RCL_SERVER);
 520
 521         /*
 522          * Some more field should be shrinked if needed.
 523          * This should be done by those who added fields to reply message.
 524          */
 525         EXIT;
 526 }
 527
 528
 529 /* if object is dying, pack the lov/llog data,
 530  * parameter info->mti_attr should be valid at this point! */
 531 int mdt_handle_last_unlink(struct mdt_thread_info *info, struct mdt_object *mo,
 532                            const struct md_attr *ma)
 533 {
 534         struct mdt_body       *repbody;
 535         const struct lu_attr *la = &ma->ma_attr;
 536         ENTRY;
 537
 538         repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
 539         LASSERT(repbody != NULL);
 540
 541         if (ma->ma_valid & MA_INODE)
 542                 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(mo));
 543
 544         if (ma->ma_valid & MA_LOV) {
 545                 __u32 mode;
 546
 547                 if (mdt_object_exists(mo) < 0)
 548                         /* If it is a remote object, and we do not retrieve
 549                          * EA back unlink reg file*/
 550                         mode = S_IFREG;
 551                 else
 552                         mode = lu_object_attr(&mo->mot_obj.mo_lu);
 553
 554                 LASSERT(ma->ma_lmm_size);
 555                 mdt_dump_lmm(D_INFO, ma->ma_lmm);
 556                 repbody->eadatasize = ma->ma_lmm_size;
 557                 if (S_ISREG(mode))
 558                         repbody->valid |= OBD_MD_FLEASIZE;
 559                 else if (S_ISDIR(mode))
 560                         repbody->valid |= OBD_MD_FLDIREA;
 561                 else
 562                         LBUG();
 563         }
 564
 565         if (ma->ma_cookie_size && (ma->ma_valid & MA_COOKIE)) {
 566                 repbody->aclsize = ma->ma_cookie_size;
 567                 repbody->valid |= OBD_MD_FLCOOKIE;
 568         }
 569
 570         RETURN(0);
 571 }
 572
 573 static inline unsigned int attr_unpack(__u64 sa_valid) {
 574         unsigned int ia_valid = 0;
 575
 576         if (sa_valid & MDS_ATTR_MODE)
 577                 ia_valid |= ATTR_MODE;
 578         if (sa_valid & MDS_ATTR_UID)
 579                 ia_valid |= ATTR_UID;
 580         if (sa_valid & MDS_ATTR_GID)
 581                 ia_valid |= ATTR_GID;
 582         if (sa_valid & MDS_ATTR_SIZE)
 583                 ia_valid |= ATTR_SIZE;
 584         if (sa_valid & MDS_ATTR_ATIME)
 585                 ia_valid |= ATTR_ATIME;
 586         if (sa_valid & MDS_ATTR_MTIME)
 587                 ia_valid |= ATTR_MTIME;
 588         if (sa_valid & MDS_ATTR_CTIME)
 589                 ia_valid |= ATTR_CTIME;
 590         if (sa_valid & MDS_ATTR_ATIME_SET)
 591                 ia_valid |= ATTR_ATIME_SET;
 592         if (sa_valid & MDS_ATTR_MTIME_SET)
 593                 ia_valid |= ATTR_MTIME_SET;
 594         if (sa_valid & MDS_ATTR_FORCE)
 595                 ia_valid |= ATTR_FORCE;
 596         if (sa_valid & MDS_ATTR_ATTR_FLAG)
 597                 ia_valid |= ATTR_ATTR_FLAG;
 598         if (sa_valid & MDS_ATTR_KILL_SUID)
 599                 ia_valid |=  ATTR_KILL_SUID;
 600         if (sa_valid & MDS_ATTR_KILL_SGID)
 601                 ia_valid |= ATTR_KILL_SGID;
 602         if (sa_valid & MDS_ATTR_CTIME_SET)
 603                 ia_valid |= ATTR_CTIME_SET;
 604         if (sa_valid & MDS_ATTR_FROM_OPEN)
 605                 ia_valid |= ATTR_FROM_OPEN;
 606         if (sa_valid & MDS_ATTR_BLOCKS)
 607                 ia_valid |= ATTR_BLOCKS;
 608         if (sa_valid & MDS_OPEN_OWNEROVERRIDE)
 609                 ia_valid |= MDS_OPEN_OWNEROVERRIDE;
 610         return ia_valid;
 611 }
 612
 613 static __u64 mdt_attr_valid_xlate(__u64 in, struct mdt_reint_record *rr,
 614                                   struct md_attr *ma)
 615 {
 616         __u64 out;
 617
 618         out = 0;
 619         if (in & ATTR_MODE)
 620                 out |= LA_MODE;
 621         if (in & ATTR_UID)
 622                 out |= LA_UID;
 623         if (in & ATTR_GID)
 624                 out |= LA_GID;
 625         if (in & ATTR_SIZE)
 626                 out |= LA_SIZE;
 627         if (in & ATTR_BLOCKS)
 628                 out |= LA_BLOCKS;
 629
 630         if (in & ATTR_FROM_OPEN)
 631                 rr->rr_flags |= MRF_SETATTR_LOCKED;
 632
 633         if (in & ATTR_ATIME_SET)
 634                 out |= LA_ATIME;
 635
 636         if (in & ATTR_CTIME_SET)
 637                 out |= LA_CTIME;
 638
 639         if (in & ATTR_MTIME_SET)
 640                 out |= LA_MTIME;
 641
 642         if (in & ATTR_ATTR_FLAG)
 643                 out |= LA_FLAGS;
 644
 645         if (in & MDS_OPEN_OWNEROVERRIDE)
 646                 out |= MDS_OPEN_OWNEROVERRIDE;
 647
 648         /*XXX need ATTR_RAW?*/
 649         in &= ~(ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_SIZE|ATTR_BLOCKS|
 650                 ATTR_ATIME|ATTR_MTIME|ATTR_CTIME|ATTR_FROM_OPEN|
 651                 ATTR_ATIME_SET|ATTR_CTIME_SET|ATTR_MTIME_SET|
 652                 ATTR_ATTR_FLAG|ATTR_RAW|MDS_OPEN_OWNEROVERRIDE);
 653         if (in != 0)
 654                 CERROR("Unknown attr bits: %#llx\n", in);
 655         return out;
 656 }
 657 /* unpacking */
 658
 659 static int mdt_setattr_unpack_rec(struct mdt_thread_info *info)
 660 {
 661         struct md_ucred         *uc  = mdt_ucred(info);
 662         struct md_attr          *ma = &info->mti_attr;
 663         struct lu_attr          *la = &ma->ma_attr;
 664         struct req_capsule      *pill = info->mti_pill;
 665         struct mdt_reint_record *rr = &info->mti_rr;
 666         struct mdt_rec_setattr  *rec;
 667         ENTRY;
 668
 669         CLASSERT(sizeof(struct mdt_rec_setattr)== sizeof(struct mdt_rec_reint));
 670         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 671         if (rec == NULL)
 672                 RETURN(-EFAULT);
 673
 674         uc->mu_fsuid = rec->sa_fsuid;
 675         uc->mu_fsgid = rec->sa_fsgid;
 676         uc->mu_cap   = rec->sa_cap;
 677         uc->mu_suppgids[0] = rec->sa_suppgid;
 678         uc->mu_suppgids[1] = -1;
 679
 680         rr->rr_fid1 = &rec->sa_fid;
 681         la->la_valid = mdt_attr_valid_xlate(attr_unpack(rec->sa_valid), rr, ma);
 682         la->la_mode  = rec->sa_mode;
 683         la->la_flags = rec->sa_attr_flags;
 684         la->la_uid   = rec->sa_uid;
 685         la->la_gid   = rec->sa_gid;
 686         la->la_size  = rec->sa_size;
 687         la->la_blocks = rec->sa_blocks;
 688         la->la_ctime = rec->sa_ctime;
 689         la->la_atime = rec->sa_atime;
 690         la->la_mtime = rec->sa_mtime;
 691         ma->ma_valid = MA_INODE;
 692
 693         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
 694                 mdt_set_capainfo(info, 0, rr->rr_fid1,
 695                                  req_capsule_client_get(pill, &RMF_CAPA1));
 696
 697         RETURN(0);
 698 }
 699
 700 static int mdt_epoch_unpack(struct mdt_thread_info *info)
 701 {
 702         struct req_capsule *pill = info->mti_pill;
 703         ENTRY;
 704
 705         if (req_capsule_get_size(pill, &RMF_MDT_EPOCH, RCL_CLIENT))
 706                 info->mti_epoch = req_capsule_client_get(pill, &RMF_MDT_EPOCH);
 707         else
 708                 info->mti_epoch = NULL;
 709         RETURN(info->mti_epoch == NULL ? -EFAULT : 0);
 710 }
 711
 712 static inline int mdt_dlmreq_unpack(struct mdt_thread_info *info) {
 713         struct req_capsule      *pill = info->mti_pill;
 714
 715         if (req_capsule_get_size(pill, &RMF_DLM_REQ, RCL_CLIENT)) {
 716                 info->mti_dlm_req = req_capsule_client_get(pill, &RMF_DLM_REQ);
 717                 if (info->mti_dlm_req == NULL)
 718                         RETURN(-EFAULT);
 719         }
 720
 721         RETURN(0);
 722 }
 723
 724 static int mdt_setattr_unpack(struct mdt_thread_info *info)
 725 {
 726         struct md_attr          *ma = &info->mti_attr;
 727         struct req_capsule      *pill = info->mti_pill;
 728         int rc;
 729         ENTRY;
 730
 731         rc = mdt_setattr_unpack_rec(info);
 732         if (rc)
 733                 RETURN(rc);
 734
 735         /* Epoch may be absent */
 736         mdt_epoch_unpack(info);
 737
 738         ma->ma_lmm_size = req_capsule_get_size(pill, &RMF_EADATA, RCL_CLIENT);
 739         if (ma->ma_lmm_size) {
 740                 ma->ma_lmm = req_capsule_client_get(pill, &RMF_EADATA);
 741                 ma->ma_valid |= MA_LOV;
 742         }
 743
 744         ma->ma_cookie_size = req_capsule_get_size(pill, &RMF_LOGCOOKIES,
 745                                                   RCL_CLIENT);
 746         if (ma->ma_cookie_size) {
 747                 ma->ma_cookie = req_capsule_client_get(pill, &RMF_LOGCOOKIES);
 748                 ma->ma_valid |= MA_COOKIE;
 749         }
 750
 751         rc = mdt_dlmreq_unpack(info);
 752         RETURN(rc);
 753 }
 754
 755 int mdt_close_unpack(struct mdt_thread_info *info)
 756 {
 757         int rc;
 758         ENTRY;
 759
 760         rc = mdt_epoch_unpack(info);
 761         if (rc)
 762                 RETURN(rc);
 763
 764         RETURN(mdt_setattr_unpack_rec(info));
 765 }
 766
 767 static int mdt_create_unpack(struct mdt_thread_info *info)
 768 {
 769         struct md_ucred         *uc  = mdt_ucred(info);
 770         struct mdt_rec_create   *rec;
 771         struct lu_attr          *attr = &info->mti_attr.ma_attr;
 772         struct mdt_reint_record *rr = &info->mti_rr;
 773         struct req_capsule      *pill = info->mti_pill;
 774         struct md_op_spec       *sp = &info->mti_spec;
 775         int rc;
 776         ENTRY;
 777
 778         CLASSERT(sizeof(struct mdt_rec_create) == sizeof(struct mdt_rec_reint));
 779         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 780         if (rec == NULL)
 781                 RETURN(-EFAULT);
 782
 783         uc->mu_fsuid = rec->cr_fsuid;
 784         uc->mu_fsgid = rec->cr_fsgid;
 785         uc->mu_cap   = rec->cr_cap;
 786         uc->mu_suppgids[0] = rec->cr_suppgid1;
 787         uc->mu_suppgids[1] = -1;
 788
 789         rr->rr_fid1 = &rec->cr_fid1;
 790         rr->rr_fid2 = &rec->cr_fid2;
 791         attr->la_mode = rec->cr_mode;
 792         attr->la_rdev  = rec->cr_rdev;
 793         attr->la_uid   = rec->cr_fsuid;
 794         attr->la_gid   = rec->cr_fsgid;
 795         attr->la_ctime = rec->cr_time;
 796         attr->la_mtime = rec->cr_time;
 797         attr->la_atime = rec->cr_time;
 798         attr->la_valid = LA_MODE | LA_RDEV | LA_UID | LA_GID |
 799                          LA_CTIME | LA_MTIME | LA_ATIME;
 800         memset(&sp->u, 0, sizeof(sp->u));
 801         sp->sp_cr_flags = rec->cr_flags;
 802         sp->sp_ck_split = !!(rec->cr_bias & MDS_CHECK_SPLIT);
 803         info->mti_cross_ref = !!(rec->cr_bias & MDS_CROSS_REF);
 804
 805         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
 806                 mdt_set_capainfo(info, 0, rr->rr_fid1,
 807                                  req_capsule_client_get(pill, &RMF_CAPA1));
 808         mdt_set_capainfo(info, 1, rr->rr_fid2, BYPASS_CAPA);
 809
 810         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
 811         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
 812         LASSERT(rr->rr_name && rr->rr_namelen > 0);
 813
 814 #ifdef CONFIG_FS_POSIX_ACL
 815         if (sp->sp_cr_flags & MDS_CREATE_RMT_ACL) {
 816                 if (S_ISDIR(attr->la_mode))
 817                         sp->u.sp_pfid = rr->rr_fid1;
 818                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_RMT_ACL);
 819                 LASSERT(req_capsule_field_present(pill, &RMF_EADATA,
 820                                                   RCL_CLIENT));
 821                 sp->u.sp_ea.eadata = req_capsule_client_get(pill, &RMF_EADATA);
 822                 sp->u.sp_ea.eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
 823                                                              RCL_CLIENT);
 824                 sp->u.sp_ea.fid = rr->rr_fid1;
 825                 RETURN(0);
 826         }
 827 #endif
 828         if (S_ISDIR(attr->la_mode)) {
 829                 /* pass parent fid for cross-ref cases */
 830                 sp->u.sp_pfid = rr->rr_fid1;
 831                 if (sp->sp_cr_flags & MDS_CREATE_SLAVE_OBJ) {
 832                         /* create salve object req, need
 833                          * unpack split ea here
 834                          */
 835                        req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_SLAVE);
 836                        LASSERT(req_capsule_field_present(pill, &RMF_EADATA,
 837                                                          RCL_CLIENT));
 838                        sp->u.sp_ea.eadata = req_capsule_client_get(pill,
 839                                                                    &RMF_EADATA);
 840                        sp->u.sp_ea.eadatalen = req_capsule_get_size(pill,
 841                                                                     &RMF_EADATA,
 842                                                                     RCL_CLIENT);
 843                        sp->u.sp_ea.fid = rr->rr_fid1;
 844                        RETURN(0);
 845                 }
 846                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_RMT_ACL);
 847         } else if (S_ISLNK(attr->la_mode)) {
 848                 const char *tgt = NULL;
 849
 850                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_SYM);
 851                 if (req_capsule_get_size(pill, &RMF_SYMTGT, RCL_CLIENT)) {
 852                         tgt = req_capsule_client_get(pill, &RMF_SYMTGT);
 853                         sp->u.sp_symname = tgt;
 854                 }
 855                 if (tgt == NULL)
 856                         RETURN(-EFAULT);
 857         } else {
 858                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_RMT_ACL);
 859         }
 860         rc = mdt_dlmreq_unpack(info);
 861         RETURN(rc);
 862 }
 863
 864 static int mdt_link_unpack(struct mdt_thread_info *info)
 865 {
 866         struct md_ucred         *uc  = mdt_ucred(info);
 867         struct mdt_rec_link     *rec;
 868         struct lu_attr          *attr = &info->mti_attr.ma_attr;
 869         struct mdt_reint_record *rr = &info->mti_rr;
 870         struct req_capsule      *pill = info->mti_pill;
 871         int rc;
 872         ENTRY;
 873
 874         CLASSERT(sizeof(struct mdt_rec_link) == sizeof(struct mdt_rec_reint));
 875         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 876         if (rec == NULL)
 877                 RETURN(-EFAULT);
 878
 879         uc->mu_fsuid = rec->lk_fsuid;
 880         uc->mu_fsgid = rec->lk_fsgid;
 881         uc->mu_cap   = rec->lk_cap;
 882         uc->mu_suppgids[0] = rec->lk_suppgid1;
 883         uc->mu_suppgids[1] = rec->lk_suppgid2;
 884
 885         attr->la_uid = rec->lk_fsuid;
 886         attr->la_gid = rec->lk_fsgid;
 887         rr->rr_fid1 = &rec->lk_fid1;
 888         rr->rr_fid2 = &rec->lk_fid2;
 889         attr->la_ctime = rec->lk_time;
 890         attr->la_mtime = rec->lk_time;
 891         attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME;
 892
 893         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
 894                 mdt_set_capainfo(info, 0, rr->rr_fid1,
 895                                  req_capsule_client_get(pill, &RMF_CAPA1));
 896         if (req_capsule_get_size(pill, &RMF_CAPA2, RCL_CLIENT))
 897                 mdt_set_capainfo(info, 1, rr->rr_fid2,
 898                                  req_capsule_client_get(pill, &RMF_CAPA2));
 899
 900         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
 901         if (rr->rr_name == NULL)
 902                 RETURN(-EFAULT);
 903         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
 904         LASSERT(rr->rr_namelen > 0);
 905         info->mti_spec.sp_ck_split = !!(rec->lk_bias & MDS_CHECK_SPLIT);
 906         info->mti_cross_ref = !!(rec->lk_bias & MDS_CROSS_REF);
 907
 908         rc = mdt_dlmreq_unpack(info);
 909         RETURN(rc);
 910 }
 911
 912 static int mdt_unlink_unpack(struct mdt_thread_info *info)
 913 {
 914         struct md_ucred         *uc  = mdt_ucred(info);
 915         struct mdt_rec_unlink   *rec;
 916         struct md_attr          *ma = &info->mti_attr;
 917         struct lu_attr          *attr = &info->mti_attr.ma_attr;
 918         struct mdt_reint_record *rr = &info->mti_rr;
 919         struct req_capsule      *pill = info->mti_pill;
 920         int rc;
 921         ENTRY;
 922
 923         CLASSERT(sizeof(struct mdt_rec_unlink) == sizeof(struct mdt_rec_reint));
 924         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 925         if (rec == NULL)
 926                 RETURN(-EFAULT);
 927
 928         uc->mu_fsuid = rec->ul_fsuid;
 929         uc->mu_fsgid = rec->ul_fsgid;
 930         uc->mu_cap   = rec->ul_cap;
 931         uc->mu_suppgids[0] = rec->ul_suppgid1;
 932         uc->mu_suppgids[1] = -1;
 933
 934         attr->la_uid = rec->ul_fsuid;
 935         attr->la_gid = rec->ul_fsgid;
 936         rr->rr_fid1 = &rec->ul_fid1;
 937         rr->rr_fid2 = &rec->ul_fid2;
 938         attr->la_ctime = rec->ul_time;
 939         attr->la_mtime = rec->ul_time;
 940         attr->la_mode  = rec->ul_mode;
 941         attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME | LA_MODE;
 942
 943         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
 944                 mdt_set_capainfo(info, 0, rr->rr_fid1,
 945                                  req_capsule_client_get(pill, &RMF_CAPA1));
 946
 947         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
 948         if (rr->rr_name == NULL)
 949                 RETURN(-EFAULT);
 950         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
 951         LASSERT(rr->rr_namelen > 0);
 952         info->mti_spec.sp_ck_split = !!(rec->ul_bias & MDS_CHECK_SPLIT);
 953         info->mti_cross_ref = !!(rec->ul_bias & MDS_CROSS_REF);
 954         if (rec->ul_bias & MDS_VTX_BYPASS)
 955                 ma->ma_attr_flags |= MDS_VTX_BYPASS;
 956         else
 957                 ma->ma_attr_flags &= ~MDS_VTX_BYPASS;
 958
 959         rc = mdt_dlmreq_unpack(info);
 960         RETURN(rc);
 961 }
 962
 963 static int mdt_rename_unpack(struct mdt_thread_info *info)
 964 {
 965         struct md_ucred         *uc = mdt_ucred(info);
 966         struct mdt_rec_rename   *rec;
 967         struct md_attr          *ma = &info->mti_attr;
 968         struct lu_attr          *attr = &info->mti_attr.ma_attr;
 969         struct mdt_reint_record *rr = &info->mti_rr;
 970         struct req_capsule      *pill = info->mti_pill;
 971         int rc;
 972         ENTRY;
 973
 974         CLASSERT(sizeof(struct mdt_rec_rename) == sizeof(struct mdt_rec_reint));
 975         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
 976         if (rec == NULL)
 977                 RETURN(-EFAULT);
 978
 979         uc->mu_fsuid = rec->rn_fsuid;
 980         uc->mu_fsgid = rec->rn_fsgid;
 981         uc->mu_cap   = rec->rn_cap;
 982         uc->mu_suppgids[0] = rec->rn_suppgid1;
 983         uc->mu_suppgids[1] = rec->rn_suppgid2;
 984
 985         attr->la_uid = rec->rn_fsuid;
 986         attr->la_gid = rec->rn_fsgid;
 987         rr->rr_fid1 = &rec->rn_fid1;
 988         rr->rr_fid2 = &rec->rn_fid2;
 989         attr->la_ctime = rec->rn_time;
 990         attr->la_mtime = rec->rn_time;
 991         /* rename_tgt contains the mode already */
 992         attr->la_mode = rec->rn_mode;
 993         attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME | LA_MODE;
 994
 995         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
 996                 mdt_set_capainfo(info, 0, rr->rr_fid1,
 997                                  req_capsule_client_get(pill, &RMF_CAPA1));
 998         if (req_capsule_get_size(pill, &RMF_CAPA2, RCL_CLIENT))
 999                 mdt_set_capainfo(info, 1, rr->rr_fid2,
1000                                  req_capsule_client_get(pill, &RMF_CAPA2));
1001
1002         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1003         rr->rr_tgt = req_capsule_client_get(pill, &RMF_SYMTGT);
1004         if (rr->rr_name == NULL || rr->rr_tgt == NULL)
1005                 RETURN(-EFAULT);
1006         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1007         LASSERT(rr->rr_namelen > 0);
1008         rr->rr_tgtlen = req_capsule_get_size(pill, &RMF_SYMTGT, RCL_CLIENT) - 1;
1009         LASSERT(rr->rr_tgtlen > 0);
1010         info->mti_spec.sp_ck_split = !!(rec->rn_bias & MDS_CHECK_SPLIT);
1011         info->mti_cross_ref = !!(rec->rn_bias & MDS_CROSS_REF);
1012         if (rec->rn_bias & MDS_VTX_BYPASS)
1013                 ma->ma_attr_flags |= MDS_VTX_BYPASS;
1014         else
1015                 ma->ma_attr_flags &= ~MDS_VTX_BYPASS;
1016
1017         rc = mdt_dlmreq_unpack(info);
1018         RETURN(rc);
1019 }
1020
1021 static int mdt_open_unpack(struct mdt_thread_info *info)
1022 {
1023         struct md_ucred         *uc = mdt_ucred(info);
1024         struct mdt_rec_create   *rec;
1025         struct lu_attr          *attr = &info->mti_attr.ma_attr;
1026         struct req_capsule      *pill = info->mti_pill;
1027         struct mdt_reint_record *rr   = &info->mti_rr;
1028         struct ptlrpc_request   *req  = mdt_info_req(info);
1029         struct md_op_spec       *sp   = &info->mti_spec;
1030         ENTRY;
1031
1032         CLASSERT(sizeof(struct mdt_rec_create) == sizeof(struct mdt_rec_reint));
1033         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1034         if (rec == NULL)
1035                 RETURN(-EFAULT);
1036
1037         uc->mu_fsuid = rec->cr_fsuid;
1038         uc->mu_fsgid = rec->cr_fsgid;
1039         uc->mu_cap   = rec->cr_cap;
1040         uc->mu_suppgids[0] = rec->cr_suppgid1;
1041         uc->mu_suppgids[1] = rec->cr_suppgid2;
1042
1043         rr->rr_fid1   = &rec->cr_fid1;
1044         rr->rr_fid2   = &rec->cr_fid2;
1045         rr->rr_handle = &rec->cr_old_handle;
1046         attr->la_mode = rec->cr_mode;
1047         attr->la_rdev  = rec->cr_rdev;
1048         attr->la_uid   = rec->cr_fsuid;
1049         attr->la_gid   = rec->cr_fsgid;
1050         attr->la_ctime = rec->cr_time;
1051         attr->la_mtime = rec->cr_time;
1052         attr->la_atime = rec->cr_time;
1053         attr->la_valid = LA_MODE  | LA_RDEV  | LA_UID   | LA_GID |
1054                          LA_CTIME | LA_MTIME | LA_ATIME;
1055         memset(&info->mti_spec.u, 0, sizeof(info->mti_spec.u));
1056         info->mti_spec.sp_cr_flags = rec->cr_flags;
1057         info->mti_replayepoch = rec->cr_ioepoch;
1058
1059         info->mti_spec.sp_ck_split = !!(rec->cr_bias & MDS_CHECK_SPLIT);
1060         info->mti_cross_ref = !!(rec->cr_bias & MDS_CROSS_REF);
1061
1062         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
1063                 mdt_set_capainfo(info, 0, rr->rr_fid1,
1064                                  req_capsule_client_get(pill, &RMF_CAPA1));
1065         if ((lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) &&
1066             (req_capsule_get_size(pill, &RMF_CAPA2, RCL_CLIENT))) {
1067 #if 0
1068                 mdt_set_capainfo(info, 1, rr->rr_fid2,
1069                                  req_capsule_client_get(pill, &RMF_CAPA2));
1070 #else
1071                 /*
1072                  * FIXME: capa in replay open request might have expired,
1073                  * bypass capa check. Security hole?
1074                  */
1075                 mdt_set_capainfo(info, 0, rr->rr_fid1, BYPASS_CAPA);
1076                 mdt_set_capainfo(info, 1, rr->rr_fid2, BYPASS_CAPA);
1077 #endif
1078         }
1079
1080         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1081         if (rr->rr_name == NULL)
1082                 RETURN(-EFAULT);
1083         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1084
1085         sp->u.sp_ea.eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
1086                                                      RCL_CLIENT);
1087         if (sp->u.sp_ea.eadatalen) {
1088                 sp->u.sp_ea.eadata = req_capsule_client_get(pill, &RMF_EADATA);
1089                 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
1090                         sp->u.sp_ea.no_lov_create = 1;
1091         }
1092
1093         RETURN(0);
1094 }
1095
1096 static int mdt_setxattr_unpack(struct mdt_thread_info *info)
1097 {
1098         struct mdt_reint_record   *rr   = &info->mti_rr;
1099         struct md_ucred           *uc   = mdt_ucred(info);
1100         struct lu_attr            *attr = &info->mti_attr.ma_attr;
1101         struct req_capsule        *pill = info->mti_pill;
1102         struct mdt_rec_setxattr   *rec;
1103         ENTRY;
1104
1105
1106         CLASSERT(sizeof(struct mdt_rec_setxattr) ==
1107                          sizeof(struct mdt_rec_reint));
1108
1109         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1110         if (rec == NULL)
1111                 RETURN(-EFAULT);
1112
1113         uc->mu_fsuid  = rec->sx_fsuid;
1114         uc->mu_fsgid  = rec->sx_fsgid;
1115         uc->mu_cap    = rec->sx_cap;
1116         uc->mu_suppgids[0] = uc->mu_suppgids[1] = -1;
1117
1118         rr->rr_opcode = rec->sx_opcode;
1119         rr->rr_fid1   = &rec->sx_fid;
1120         attr->la_valid = rec->sx_valid;
1121         attr->la_size = rec->sx_size;
1122         attr->la_flags = rec->sx_flags;
1123
1124         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
1125                 mdt_set_capainfo(info, 0, rr->rr_fid1,
1126                                  req_capsule_client_get(pill, &RMF_CAPA1));
1127         else
1128                 mdt_set_capainfo(info, 0, rr->rr_fid1, BYPASS_CAPA);
1129
1130         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1131         if (rr->rr_name == NULL)
1132                 RETURN(-EFAULT);
1133         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1134         LASSERT(rr->rr_namelen > 0);
1135
1136         rr->rr_eadatalen = req_capsule_get_size(pill, &RMF_EADATA, RCL_CLIENT);
1137         if (rr->rr_eadatalen > 0) {
1138                 rr->rr_eadata = req_capsule_client_get(pill, &RMF_EADATA);
1139                 if (rr->rr_eadata == NULL)
1140                         RETURN(-EFAULT);
1141         }
1142
1143         RETURN(0);
1144 }
1145
1146
1147 typedef int (*reint_unpacker)(struct mdt_thread_info *info);
1148
1149 static reint_unpacker mdt_reint_unpackers[REINT_MAX] = {
1150         [REINT_SETATTR]  = mdt_setattr_unpack,
1151         [REINT_CREATE]   = mdt_create_unpack,
1152         [REINT_LINK]     = mdt_link_unpack,
1153         [REINT_UNLINK]   = mdt_unlink_unpack,
1154         [REINT_RENAME]   = mdt_rename_unpack,
1155         [REINT_OPEN]     = mdt_open_unpack,
1156         [REINT_SETXATTR] = mdt_setxattr_unpack
1157 };
1158
1159 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op)
1160 {
1161         int rc;
1162         ENTRY;
1163
1164         memset(&info->mti_rr, 0, sizeof(info->mti_rr));
1165         if (op < REINT_MAX && mdt_reint_unpackers[op] != NULL) {
1166                 info->mti_rr.rr_opcode = op;
1167                 rc = mdt_reint_unpackers[op](info);
1168         } else {
1169                 CERROR("Unexpected opcode %d\n", op);
1170                 rc = -EFAULT;
1171         }
1172         RETURN(rc);
1173 }