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[fs/lustre-release.git] / 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 (c) 2007, 2010, Oracle and/or its affiliates. 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 #include <lnet/lib-lnet.h>
57
58
59 typedef enum ucred_init_type {
60         NONE_INIT       = 0,
61         BODY_INIT       = 1,
62         REC_INIT        = 2
63 } ucred_init_type_t;
64
65 void mdt_exit_ucred(struct mdt_thread_info *info)
66 {
67         struct md_ucred   *uc  = mdt_ucred(info);
68         struct mdt_device *mdt = info->mti_mdt;
69
70         if (uc->mu_valid != UCRED_INIT) {
71                 uc->mu_suppgids[0] = uc->mu_suppgids[1] = -1;
72                 if (uc->mu_ginfo) {
73                         cfs_put_group_info(uc->mu_ginfo);
74                         uc->mu_ginfo = NULL;
75                 }
76                 if (uc->mu_identity) {
77                         mdt_identity_put(mdt->mdt_identity_cache,
78                                          uc->mu_identity);
79                         uc->mu_identity = NULL;
80                 }
81                 uc->mu_valid = UCRED_INIT;
82         }
83 }
84
85 static int match_nosquash_list(cfs_rw_semaphore_t *sem,
86                                cfs_list_t *nidlist,
87                                lnet_nid_t peernid)
88 {
89         int rc;
90         ENTRY;
91         cfs_down_read(sem);
92         rc = cfs_match_nid(peernid, nidlist);
93         cfs_up_read(sem);
94         RETURN(rc);
95 }
96
97 /* root_squash for inter-MDS operations */
98 static int mdt_root_squash(struct mdt_thread_info *info, lnet_nid_t peernid)
99 {
100         struct md_ucred *ucred = mdt_ucred(info);
101         ENTRY;
102
103         if (!info->mti_mdt->mdt_squash_uid || ucred->mu_fsuid)
104                 RETURN(0);
105
106         if (match_nosquash_list(&info->mti_mdt->mdt_squash_sem,
107                                 &info->mti_mdt->mdt_nosquash_nids,
108                                 peernid)) {
109                 CDEBUG(D_OTHER, "%s is in nosquash_nids list\n",
110                        libcfs_nid2str(peernid));
111                 RETURN(0);
112         }
113
114         CDEBUG(D_OTHER, "squash req from %s, (%d:%d/%x)=>(%d:%d/%x)\n",
115                libcfs_nid2str(peernid),
116                ucred->mu_fsuid, ucred->mu_fsgid, ucred->mu_cap,
117                info->mti_mdt->mdt_squash_uid, info->mti_mdt->mdt_squash_gid,
118                0);
119
120         ucred->mu_fsuid = info->mti_mdt->mdt_squash_uid;
121         ucred->mu_fsgid = info->mti_mdt->mdt_squash_gid;
122         ucred->mu_cap = 0;
123         ucred->mu_suppgids[0] = -1;
124         ucred->mu_suppgids[1] = -1;
125
126         RETURN(0);
127 }
128
129 static int new_init_ucred(struct mdt_thread_info *info, ucred_init_type_t type,
130                           void *buf)
131 {
132         struct ptlrpc_request   *req = mdt_info_req(info);
133         struct mdt_device       *mdt = info->mti_mdt;
134         struct ptlrpc_user_desc *pud = req->rq_user_desc;
135         struct md_ucred         *ucred = mdt_ucred(info);
136         lnet_nid_t               peernid = req->rq_peer.nid;
137         __u32                    perm = 0;
138         __u32                    remote = exp_connect_rmtclient(info->mti_exp);
139         int                      setuid;
140         int                      setgid;
141         int                      rc = 0;
142
143         ENTRY;
144
145         LASSERT(req->rq_auth_gss);
146         LASSERT(!req->rq_auth_usr_mdt);
147         LASSERT(req->rq_user_desc);
148
149         ucred->mu_valid = UCRED_INVALID;
150
151         ucred->mu_o_uid   = pud->pud_uid;
152         ucred->mu_o_gid   = pud->pud_gid;
153         ucred->mu_o_fsuid = pud->pud_fsuid;
154         ucred->mu_o_fsgid = pud->pud_fsgid;
155
156         if (type == BODY_INIT) {
157                 struct mdt_body *body = (struct mdt_body *)buf;
158
159                 ucred->mu_suppgids[0] = body->suppgid;
160                 ucred->mu_suppgids[1] = -1;
161         }
162
163         /* sanity check: we expect the uid which client claimed is true */
164         if (remote) {
165                 if (req->rq_auth_mapped_uid == INVALID_UID) {
166                         CDEBUG(D_SEC, "remote user not mapped, deny access!\n");
167                         RETURN(-EACCES);
168                 }
169
170                 if (ptlrpc_user_desc_do_idmap(req, pud))
171                         RETURN(-EACCES);
172
173                 if (req->rq_auth_mapped_uid != pud->pud_uid) {
174                         CDEBUG(D_SEC, "remote client %s: auth/mapped uid %u/%u "
175                                "while client claims %u:%u/%u:%u\n",
176                                libcfs_nid2str(peernid), req->rq_auth_uid,
177                                req->rq_auth_mapped_uid,
178                                pud->pud_uid, pud->pud_gid,
179                                pud->pud_fsuid, pud->pud_fsgid);
180                         RETURN(-EACCES);
181                 }
182         } else {
183                 if (req->rq_auth_uid != pud->pud_uid) {
184                         CDEBUG(D_SEC, "local client %s: auth uid %u "
185                                "while client claims %u:%u/%u:%u\n",
186                                libcfs_nid2str(peernid), req->rq_auth_uid,
187                                pud->pud_uid, pud->pud_gid,
188                                pud->pud_fsuid, pud->pud_fsgid);
189                         RETURN(-EACCES);
190                 }
191         }
192
193         if (is_identity_get_disabled(mdt->mdt_identity_cache)) {
194                 if (remote) {
195                         CDEBUG(D_SEC, "remote client must run with identity_get "
196                                "enabled!\n");
197                         RETURN(-EACCES);
198                 } else {
199                         ucred->mu_identity = NULL;
200                         perm = CFS_SETUID_PERM | CFS_SETGID_PERM |
201                                CFS_SETGRP_PERM;
202                 }
203         } else {
204                 struct md_identity *identity;
205
206                 identity = mdt_identity_get(mdt->mdt_identity_cache,
207                                             pud->pud_uid);
208                 if (IS_ERR(identity)) {
209                         if (unlikely(PTR_ERR(identity) == -EREMCHG &&
210                                      !remote)) {
211                                 ucred->mu_identity = NULL;
212                                 perm = CFS_SETUID_PERM | CFS_SETGID_PERM |
213                                        CFS_SETGRP_PERM;
214                         } else {
215                                 CDEBUG(D_SEC, "Deny access without identity: uid %u\n",
216                                        pud->pud_uid);
217                                 RETURN(-EACCES);
218                         }
219                 } else {
220                         ucred->mu_identity = identity;
221                         perm = mdt_identity_get_perm(ucred->mu_identity,
222                                                      remote, peernid);
223                 }
224         }
225
226         /* find out the setuid/setgid attempt */
227         setuid = (pud->pud_uid != pud->pud_fsuid);
228         setgid = ((pud->pud_gid != pud->pud_fsgid) ||
229                   (ucred->mu_identity &&
230                   (pud->pud_gid != ucred->mu_identity->mi_gid)));
231
232         /* check permission of setuid */
233         if (setuid && !(perm & CFS_SETUID_PERM)) {
234                 CDEBUG(D_SEC, "mdt blocked setuid attempt (%u -> %u) from %s\n",
235                        pud->pud_uid, pud->pud_fsuid, libcfs_nid2str(peernid));
236                 GOTO(out, rc = -EACCES);
237         }
238
239         /* check permission of setgid */
240         if (setgid && !(perm & CFS_SETGID_PERM)) {
241                 CDEBUG(D_SEC, "mdt blocked setgid attempt (%u:%u/%u:%u -> %u) "
242                        "from %s\n", pud->pud_uid, pud->pud_gid,
243                        pud->pud_fsuid, pud->pud_fsgid,
244                        ucred->mu_identity->mi_gid, libcfs_nid2str(peernid));
245                 GOTO(out, rc = -EACCES);
246         }
247
248         /*
249          * NB: remote client not allowed to setgroups anyway.
250          */
251         if (!remote && perm & CFS_SETGRP_PERM) {
252                 if (pud->pud_ngroups) {
253                         /* setgroups for local client */
254                         ucred->mu_ginfo = cfs_groups_alloc(pud->pud_ngroups);
255                         if (!ucred->mu_ginfo) {
256                                 CERROR("failed to alloc %d groups\n",
257                                        pud->pud_ngroups);
258                                 GOTO(out, rc = -ENOMEM);
259                         }
260
261                         lustre_groups_from_list(ucred->mu_ginfo,
262                                                 pud->pud_groups);
263                         lustre_groups_sort(ucred->mu_ginfo);
264                 } else {
265                         ucred->mu_ginfo = NULL;
266                 }
267         } else {
268                 ucred->mu_suppgids[0] = -1;
269                 ucred->mu_suppgids[1] = -1;
270                 ucred->mu_ginfo = NULL;
271         }
272
273         ucred->mu_uid   = pud->pud_uid;
274         ucred->mu_gid   = pud->pud_gid;
275         ucred->mu_fsuid = pud->pud_fsuid;
276         ucred->mu_fsgid = pud->pud_fsgid;
277
278         /* process root_squash here. */
279         mdt_root_squash(info, peernid);
280
281         /* remove fs privilege for non-root user. */
282         if (ucred->mu_fsuid)
283                 ucred->mu_cap = pud->pud_cap & ~CFS_CAP_FS_MASK;
284         else
285                 ucred->mu_cap = pud->pud_cap;
286         if (remote && !(perm & CFS_RMTOWN_PERM))
287                 ucred->mu_cap &= ~(CFS_CAP_SYS_RESOURCE_MASK |
288                                    CFS_CAP_CHOWN_MASK);
289         ucred->mu_valid = UCRED_NEW;
290
291         EXIT;
292
293 out:
294         if (rc) {
295                 if (ucred->mu_ginfo) {
296                         cfs_put_group_info(ucred->mu_ginfo);
297                         ucred->mu_ginfo = NULL;
298                 }
299                 if (ucred->mu_identity) {
300                         mdt_identity_put(mdt->mdt_identity_cache,
301                                          ucred->mu_identity);
302                         ucred->mu_identity = NULL;
303                 }
304         }
305
306         return rc;
307 }
308
309 int mdt_check_ucred(struct mdt_thread_info *info)
310 {
311         struct ptlrpc_request   *req = mdt_info_req(info);
312         struct mdt_device       *mdt = info->mti_mdt;
313         struct ptlrpc_user_desc *pud = req->rq_user_desc;
314         struct md_ucred         *ucred = mdt_ucred(info);
315         struct md_identity      *identity = NULL;
316         lnet_nid_t               peernid = req->rq_peer.nid;
317         __u32                    perm = 0;
318         __u32                    remote = exp_connect_rmtclient(info->mti_exp);
319         int                      setuid;
320         int                      setgid;
321         int                      rc = 0;
322
323         ENTRY;
324
325         if ((ucred->mu_valid == UCRED_OLD) || (ucred->mu_valid == UCRED_NEW))
326                 RETURN(0);
327
328         if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc)
329                 RETURN(0);
330
331         /* sanity check: if we use strong authentication, we expect the
332          * uid which client claimed is true */
333         if (remote) {
334                 if (req->rq_auth_mapped_uid == INVALID_UID) {
335                         CDEBUG(D_SEC, "remote user not mapped, deny access!\n");
336                         RETURN(-EACCES);
337                 }
338
339                 if (ptlrpc_user_desc_do_idmap(req, pud))
340                         RETURN(-EACCES);
341
342                 if (req->rq_auth_mapped_uid != pud->pud_uid) {
343                         CDEBUG(D_SEC, "remote client %s: auth/mapped uid %u/%u "
344                                "while client claims %u:%u/%u:%u\n",
345                                libcfs_nid2str(peernid), req->rq_auth_uid,
346                                req->rq_auth_mapped_uid,
347                                pud->pud_uid, pud->pud_gid,
348                                pud->pud_fsuid, pud->pud_fsgid);
349                         RETURN(-EACCES);
350                 }
351         } else {
352                 if (req->rq_auth_uid != pud->pud_uid) {
353                         CDEBUG(D_SEC, "local client %s: auth uid %u "
354                                "while client claims %u:%u/%u:%u\n",
355                                libcfs_nid2str(peernid), req->rq_auth_uid,
356                                pud->pud_uid, pud->pud_gid,
357                                pud->pud_fsuid, pud->pud_fsgid);
358                         RETURN(-EACCES);
359                 }
360         }
361
362         if (is_identity_get_disabled(mdt->mdt_identity_cache)) {
363                 if (remote) {
364                         CDEBUG(D_SEC, "remote client must run with identity_get "
365                                "enabled!\n");
366                         RETURN(-EACCES);
367                 }
368                 RETURN(0);
369         }
370
371         identity = mdt_identity_get(mdt->mdt_identity_cache, pud->pud_uid);
372         if (IS_ERR(identity)) {
373                 if (unlikely(PTR_ERR(identity) == -EREMCHG &&
374                              !remote)) {
375                         RETURN(0);
376                 } else {
377                         CDEBUG(D_SEC, "Deny access without identity: uid %u\n",
378                                pud->pud_uid);
379                         RETURN(-EACCES);
380                }
381         }
382
383         perm = mdt_identity_get_perm(identity, remote, peernid);
384         /* find out the setuid/setgid attempt */
385         setuid = (pud->pud_uid != pud->pud_fsuid);
386         setgid = (pud->pud_gid != pud->pud_fsgid ||
387                   pud->pud_gid != identity->mi_gid);
388
389         /* check permission of setuid */
390         if (setuid && !(perm & CFS_SETUID_PERM)) {
391                 CDEBUG(D_SEC, "mdt blocked setuid attempt (%u -> %u) from %s\n",
392                        pud->pud_uid, pud->pud_fsuid, libcfs_nid2str(peernid));
393                 GOTO(out, rc = -EACCES);
394         }
395
396         /* check permission of setgid */
397         if (setgid && !(perm & CFS_SETGID_PERM)) {
398                 CDEBUG(D_SEC, "mdt blocked setgid attempt (%u:%u/%u:%u -> %u) "
399                        "from %s\n", pud->pud_uid, pud->pud_gid,
400                        pud->pud_fsuid, pud->pud_fsgid, identity->mi_gid,
401                        libcfs_nid2str(peernid));
402                 GOTO(out, rc = -EACCES);
403         }
404
405         EXIT;
406
407 out:
408         mdt_identity_put(mdt->mdt_identity_cache, identity);
409         return rc;
410 }
411
412 static int old_init_ucred(struct mdt_thread_info *info,
413                           struct mdt_body *body)
414 {
415         struct md_ucred *uc = mdt_ucred(info);
416         struct mdt_device  *mdt = info->mti_mdt;
417         struct md_identity *identity = NULL;
418
419         ENTRY;
420
421         uc->mu_valid = UCRED_INVALID;
422         uc->mu_o_uid = uc->mu_uid = body->uid;
423         uc->mu_o_gid = uc->mu_gid = body->gid;
424         uc->mu_o_fsuid = uc->mu_fsuid = body->fsuid;
425         uc->mu_o_fsgid = uc->mu_fsgid = body->fsgid;
426         uc->mu_suppgids[0] = body->suppgid;
427         uc->mu_suppgids[1] = -1;
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         /* process root_squash here. */
445         mdt_root_squash(info, mdt_info_req(info)->rq_peer.nid);
446
447         /* remove fs privilege for non-root user. */
448         if (uc->mu_fsuid)
449                 uc->mu_cap = body->capability & ~CFS_CAP_FS_MASK;
450         else
451                 uc->mu_cap = body->capability;
452         uc->mu_valid = UCRED_OLD;
453
454         RETURN(0);
455 }
456
457 static int old_init_ucred_reint(struct mdt_thread_info *info)
458 {
459         struct md_ucred *uc = mdt_ucred(info);
460         struct mdt_device  *mdt = info->mti_mdt;
461         struct md_identity *identity = NULL;
462
463         ENTRY;
464
465         uc->mu_valid = UCRED_INVALID;
466         uc->mu_o_uid = uc->mu_o_fsuid = uc->mu_uid = uc->mu_fsuid;
467         uc->mu_o_gid = uc->mu_o_fsgid = uc->mu_gid = uc->mu_fsgid;
468         uc->mu_ginfo = NULL;
469         if (!is_identity_get_disabled(mdt->mdt_identity_cache)) {
470                 identity = mdt_identity_get(mdt->mdt_identity_cache,
471                                             uc->mu_fsuid);
472                 if (IS_ERR(identity)) {
473                         if (unlikely(PTR_ERR(identity) == -EREMCHG)) {
474                                 identity = NULL;
475                         } else {
476                                 CDEBUG(D_SEC, "Deny access without identity: "
477                                        "uid %u\n", uc->mu_fsuid);
478                                 RETURN(-EACCES);
479                         }
480                 }
481         }
482         uc->mu_identity = identity;
483
484         /* process root_squash here. */
485         mdt_root_squash(info, mdt_info_req(info)->rq_peer.nid);
486
487         /* remove fs privilege for non-root user. */
488         if (uc->mu_fsuid)
489                 uc->mu_cap &= ~CFS_CAP_FS_MASK;
490         uc->mu_valid = UCRED_OLD;
491
492         RETURN(0);
493 }
494
495 int mdt_init_ucred(struct mdt_thread_info *info, struct mdt_body *body)
496 {
497         struct ptlrpc_request *req = mdt_info_req(info);
498         struct md_ucred       *uc  = mdt_ucred(info);
499
500         if ((uc->mu_valid == UCRED_OLD) || (uc->mu_valid == UCRED_NEW))
501                 return 0;
502
503         mdt_exit_ucred(info);
504
505         if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc)
506                 return old_init_ucred(info, body);
507         else
508                 return new_init_ucred(info, BODY_INIT, body);
509 }
510
511 int mdt_init_ucred_reint(struct mdt_thread_info *info)
512 {
513         struct ptlrpc_request *req = mdt_info_req(info);
514         struct md_ucred       *uc  = mdt_ucred(info);
515
516         if ((uc->mu_valid == UCRED_OLD) || (uc->mu_valid == UCRED_NEW))
517                 return 0;
518
519         mdt_exit_ucred(info);
520
521         if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc)
522                 return old_init_ucred_reint(info);
523         else
524                 return new_init_ucred(info, REC_INIT, NULL);
525 }
526
527 /* copied from lov/lov_ea.c, just for debugging, will be removed later */
528 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm)
529 {
530         const struct lov_ost_data_v1 *lod;
531         int                           i;
532         __u16                         count;
533
534         count = le16_to_cpu(((struct lov_user_md*)lmm)->lmm_stripe_count);
535
536         CDEBUG(level, "objid "LPX64", magic 0x%08X, pattern %#X\n",
537                le64_to_cpu(lmm->lmm_object_id), le32_to_cpu(lmm->lmm_magic),
538                le32_to_cpu(lmm->lmm_pattern));
539         CDEBUG(level,"stripe_size=0x%x, stripe_count=0x%x\n",
540                le32_to_cpu(lmm->lmm_stripe_size), count);
541         if (count == LOV_ALL_STRIPES)
542                 return;
543         LASSERT(count <= LOV_MAX_STRIPE_COUNT);
544         for (i = 0, lod = lmm->lmm_objects; i < count; i++, lod++)
545                 CDEBUG(level, "stripe %u idx %u subobj "LPX64"/"LPX64"\n",
546                        i, le32_to_cpu(lod->l_ost_idx),
547                        le64_to_cpu(lod->l_object_seq),
548                        le64_to_cpu(lod->l_object_id));
549 }
550
551 void mdt_shrink_reply(struct mdt_thread_info *info)
552 {
553         struct req_capsule *pill = info->mti_pill;
554         struct mdt_body    *body;
555         int                md_size;
556         int                acl_size;
557         ENTRY;
558
559         body = req_capsule_server_get(pill, &RMF_MDT_BODY);
560         LASSERT(body != NULL);
561
562         if (body->valid & (OBD_MD_FLDIREA | OBD_MD_FLEASIZE | OBD_MD_LINKNAME))
563                 md_size = body->eadatasize;
564         else
565                 md_size = 0;
566
567         acl_size = body->aclsize;
568
569         /* this replay - not send info to client */
570         if (info->mti_spec.no_create == 1) {
571                 md_size = 0;
572                 acl_size = 0;
573         }
574
575         CDEBUG(D_INFO, "Shrink to md_size = %d cookie/acl_size = %d"
576                         " MDSCAPA = %llx, OSSCAPA = %llx\n",
577                         md_size, acl_size,
578                         (unsigned long long)(body->valid & OBD_MD_FLMDSCAPA),
579                         (unsigned long long)(body->valid & OBD_MD_FLOSSCAPA));
580 /*
581             &RMF_MDT_BODY,
582             &RMF_MDT_MD,
583             &RMF_ACL, or &RMF_LOGCOOKIES
584 (optional)  &RMF_CAPA1,
585 (optional)  &RMF_CAPA2,
586 (optional)  something else
587 */
588
589         if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
590                 req_capsule_shrink(pill, &RMF_MDT_MD, md_size,
591                                    RCL_SERVER);
592         if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
593                 req_capsule_shrink(pill, &RMF_ACL, acl_size, RCL_SERVER);
594         else if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
595                 req_capsule_shrink(pill, &RMF_LOGCOOKIES,
596                                    acl_size, RCL_SERVER);
597
598         if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_SERVER) &&
599             !(body->valid & OBD_MD_FLMDSCAPA))
600                 req_capsule_shrink(pill, &RMF_CAPA1, 0, RCL_SERVER);
601
602         if (req_capsule_has_field(pill, &RMF_CAPA2, RCL_SERVER) &&
603             !(body->valid & OBD_MD_FLOSSCAPA))
604                 req_capsule_shrink(pill, &RMF_CAPA2, 0, RCL_SERVER);
605
606         /*
607          * Some more field should be shrinked if needed.
608          * This should be done by those who added fields to reply message.
609          */
610         EXIT;
611 }
612
613
614 /* if object is dying, pack the lov/llog data,
615  * parameter info->mti_attr should be valid at this point! */
616 int mdt_handle_last_unlink(struct mdt_thread_info *info, struct mdt_object *mo,
617                            const struct md_attr *ma)
618 {
619         struct mdt_body       *repbody;
620         const struct lu_attr *la = &ma->ma_attr;
621         int rc;
622         ENTRY;
623
624         repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
625         LASSERT(repbody != NULL);
626
627         if (ma->ma_valid & MA_INODE)
628                 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(mo));
629
630         if (ma->ma_valid & MA_LOV) {
631                 __u32 mode;
632
633                 if (mdt_object_exists(mo) < 0)
634                         /* If it is a remote object, and we do not retrieve
635                          * EA back unlink reg file*/
636                         mode = S_IFREG;
637                 else
638                         mode = lu_object_attr(&mo->mot_obj.mo_lu);
639
640                 LASSERT(ma->ma_lmm_size);
641                 mdt_dump_lmm(D_INFO, ma->ma_lmm);
642                 repbody->eadatasize = ma->ma_lmm_size;
643                 if (S_ISREG(mode))
644                         repbody->valid |= OBD_MD_FLEASIZE;
645                 else if (S_ISDIR(mode))
646                         repbody->valid |= OBD_MD_FLDIREA;
647                 else
648                         LBUG();
649         }
650
651         if (ma->ma_cookie_size && (ma->ma_valid & MA_COOKIE)) {
652                 repbody->aclsize = ma->ma_cookie_size;
653                 repbody->valid |= OBD_MD_FLCOOKIE;
654         }
655
656         if (info->mti_mdt->mdt_opts.mo_oss_capa &&
657             info->mti_exp->exp_connect_flags & OBD_CONNECT_OSS_CAPA &&
658             repbody->valid & OBD_MD_FLEASIZE) {
659                 struct lustre_capa *capa;
660
661                 capa = req_capsule_server_get(info->mti_pill, &RMF_CAPA2);
662                 LASSERT(capa);
663                 capa->lc_opc = CAPA_OPC_OSS_DESTROY;
664                 rc = mo_capa_get(info->mti_env, mdt_object_child(mo), capa, 0);
665                 if (rc)
666                         RETURN(rc);
667
668                 repbody->valid |= OBD_MD_FLOSSCAPA;
669         }
670
671         RETURN(0);
672 }
673
674 static inline unsigned int attr_unpack(__u64 sa_valid) {
675         unsigned int ia_valid = 0;
676
677         if (sa_valid & MDS_ATTR_MODE)
678                 ia_valid |= ATTR_MODE;
679         if (sa_valid & MDS_ATTR_UID)
680                 ia_valid |= ATTR_UID;
681         if (sa_valid & MDS_ATTR_GID)
682                 ia_valid |= ATTR_GID;
683         if (sa_valid & MDS_ATTR_SIZE)
684                 ia_valid |= ATTR_SIZE;
685         if (sa_valid & MDS_ATTR_ATIME)
686                 ia_valid |= ATTR_ATIME;
687         if (sa_valid & MDS_ATTR_MTIME)
688                 ia_valid |= ATTR_MTIME;
689         if (sa_valid & MDS_ATTR_CTIME)
690                 ia_valid |= ATTR_CTIME;
691         if (sa_valid & MDS_ATTR_ATIME_SET)
692                 ia_valid |= ATTR_ATIME_SET;
693         if (sa_valid & MDS_ATTR_MTIME_SET)
694                 ia_valid |= ATTR_MTIME_SET;
695         if (sa_valid & MDS_ATTR_FORCE)
696                 ia_valid |= ATTR_FORCE;
697         if (sa_valid & MDS_ATTR_ATTR_FLAG)
698                 ia_valid |= ATTR_ATTR_FLAG;
699         if (sa_valid & MDS_ATTR_KILL_SUID)
700                 ia_valid |=  ATTR_KILL_SUID;
701         if (sa_valid & MDS_ATTR_KILL_SGID)
702                 ia_valid |= ATTR_KILL_SGID;
703         if (sa_valid & MDS_ATTR_CTIME_SET)
704                 ia_valid |= ATTR_CTIME_SET;
705         if (sa_valid & MDS_ATTR_FROM_OPEN)
706                 ia_valid |= ATTR_FROM_OPEN;
707         if (sa_valid & MDS_ATTR_BLOCKS)
708                 ia_valid |= ATTR_BLOCKS;
709         if (sa_valid & MDS_OPEN_OWNEROVERRIDE)
710                 ia_valid |= MDS_OPEN_OWNEROVERRIDE;
711         return ia_valid;
712 }
713
714 static __u64 mdt_attr_valid_xlate(__u64 in, struct mdt_reint_record *rr,
715                                   struct md_attr *ma)
716 {
717         __u64 out;
718
719         out = 0;
720         if (in & ATTR_MODE)
721                 out |= LA_MODE;
722         if (in & ATTR_UID)
723                 out |= LA_UID;
724         if (in & ATTR_GID)
725                 out |= LA_GID;
726         if (in & ATTR_SIZE)
727                 out |= LA_SIZE;
728         if (in & ATTR_BLOCKS)
729                 out |= LA_BLOCKS;
730
731         if (in & ATTR_FROM_OPEN)
732                 rr->rr_flags |= MRF_OPEN_TRUNC;
733
734         if (in & ATTR_ATIME_SET)
735                 out |= LA_ATIME;
736
737         if (in & ATTR_CTIME_SET)
738                 out |= LA_CTIME;
739
740         if (in & ATTR_MTIME_SET)
741                 out |= LA_MTIME;
742
743         if (in & ATTR_ATTR_FLAG)
744                 out |= LA_FLAGS;
745
746         if (in & ATTR_KILL_SUID)
747                 out |= LA_KILL_SUID;
748
749         if (in & ATTR_KILL_SGID)
750                 out |= LA_KILL_SGID;
751
752         if (in & MDS_OPEN_OWNEROVERRIDE)
753                 ma->ma_attr_flags |= MDS_OPEN_OWNEROVERRIDE;
754
755         if (in & ATTR_FORCE)
756                 ma->ma_attr_flags |= MDS_PERM_BYPASS;
757
758         /*XXX need ATTR_RAW?*/
759         in &= ~(ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_SIZE|ATTR_BLOCKS|
760                 ATTR_ATIME|ATTR_MTIME|ATTR_CTIME|ATTR_FROM_OPEN|
761                 ATTR_ATIME_SET|ATTR_CTIME_SET|ATTR_MTIME_SET|
762                 ATTR_ATTR_FLAG|ATTR_RAW|MDS_OPEN_OWNEROVERRIDE|
763                 ATTR_FORCE|ATTR_KILL_SUID|ATTR_KILL_SGID);
764         if (in != 0)
765                 CERROR("Unknown attr bits: "LPX64"\n", in);
766         return out;
767 }
768 /* unpacking */
769
770 static int mdt_setattr_unpack_rec(struct mdt_thread_info *info)
771 {
772         struct md_ucred         *uc  = mdt_ucred(info);
773         struct md_attr          *ma = &info->mti_attr;
774         struct lu_attr          *la = &ma->ma_attr;
775         struct req_capsule      *pill = info->mti_pill;
776         struct mdt_reint_record *rr = &info->mti_rr;
777         struct mdt_rec_setattr  *rec;
778         ENTRY;
779
780         CLASSERT(sizeof(struct mdt_rec_setattr)== sizeof(struct mdt_rec_reint));
781         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
782         if (rec == NULL)
783                 RETURN(-EFAULT);
784
785         uc->mu_fsuid = rec->sa_fsuid;
786         uc->mu_fsgid = rec->sa_fsgid;
787         uc->mu_cap   = rec->sa_cap;
788         uc->mu_suppgids[0] = rec->sa_suppgid;
789         uc->mu_suppgids[1] = -1;
790
791         rr->rr_fid1 = &rec->sa_fid;
792         la->la_valid = mdt_attr_valid_xlate(attr_unpack(rec->sa_valid), rr, ma);
793         la->la_mode  = rec->sa_mode;
794         la->la_flags = rec->sa_attr_flags;
795         la->la_uid   = rec->sa_uid;
796         la->la_gid   = rec->sa_gid;
797         la->la_size  = rec->sa_size;
798         la->la_blocks = rec->sa_blocks;
799         la->la_ctime = rec->sa_ctime;
800         la->la_atime = rec->sa_atime;
801         la->la_mtime = rec->sa_mtime;
802         ma->ma_valid = MA_INODE;
803
804         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
805                 mdt_set_capainfo(info, 0, rr->rr_fid1,
806                                  req_capsule_client_get(pill, &RMF_CAPA1));
807
808         RETURN(0);
809 }
810
811 static int mdt_ioepoch_unpack(struct mdt_thread_info *info)
812 {
813         struct req_capsule *pill = info->mti_pill;
814         ENTRY;
815
816         if (req_capsule_get_size(pill, &RMF_MDT_EPOCH, RCL_CLIENT))
817                 info->mti_ioepoch =
818                         req_capsule_client_get(pill, &RMF_MDT_EPOCH);
819         else
820                 info->mti_ioepoch = NULL;
821         RETURN(info->mti_ioepoch == NULL ? -EFAULT : 0);
822 }
823
824 static inline int mdt_dlmreq_unpack(struct mdt_thread_info *info) {
825         struct req_capsule      *pill = info->mti_pill;
826
827         if (req_capsule_get_size(pill, &RMF_DLM_REQ, RCL_CLIENT)) {
828                 info->mti_dlm_req = req_capsule_client_get(pill, &RMF_DLM_REQ);
829                 if (info->mti_dlm_req == NULL)
830                         RETURN(-EFAULT);
831         }
832
833         RETURN(0);
834 }
835
836 static int mdt_setattr_unpack(struct mdt_thread_info *info)
837 {
838         struct md_attr          *ma = &info->mti_attr;
839         struct req_capsule      *pill = info->mti_pill;
840         int rc;
841         ENTRY;
842
843         rc = mdt_setattr_unpack_rec(info);
844         if (rc)
845                 RETURN(rc);
846
847         /* Epoch may be absent */
848         mdt_ioepoch_unpack(info);
849
850         ma->ma_lmm_size = req_capsule_get_size(pill, &RMF_EADATA, RCL_CLIENT);
851         if (ma->ma_lmm_size) {
852                 ma->ma_lmm = req_capsule_client_get(pill, &RMF_EADATA);
853                 ma->ma_valid |= MA_LOV;
854         }
855
856         ma->ma_cookie_size = req_capsule_get_size(pill, &RMF_LOGCOOKIES,
857                                                   RCL_CLIENT);
858         if (ma->ma_cookie_size) {
859                 ma->ma_cookie = req_capsule_client_get(pill, &RMF_LOGCOOKIES);
860                 ma->ma_valid |= MA_COOKIE;
861         }
862
863         rc = mdt_dlmreq_unpack(info);
864         RETURN(rc);
865 }
866
867 int mdt_close_unpack(struct mdt_thread_info *info)
868 {
869         int rc;
870         ENTRY;
871
872         rc = mdt_ioepoch_unpack(info);
873         if (rc)
874                 RETURN(rc);
875
876         RETURN(mdt_setattr_unpack_rec(info));
877 }
878
879 static int mdt_create_unpack(struct mdt_thread_info *info)
880 {
881         struct md_ucred         *uc  = mdt_ucred(info);
882         struct mdt_rec_create   *rec;
883         struct lu_attr          *attr = &info->mti_attr.ma_attr;
884         struct mdt_reint_record *rr = &info->mti_rr;
885         struct req_capsule      *pill = info->mti_pill;
886         struct md_op_spec       *sp = &info->mti_spec;
887         int rc;
888         ENTRY;
889
890         CLASSERT(sizeof(struct mdt_rec_create) == sizeof(struct mdt_rec_reint));
891         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
892         if (rec == NULL)
893                 RETURN(-EFAULT);
894
895         uc->mu_fsuid = rec->cr_fsuid;
896         uc->mu_fsgid = rec->cr_fsgid;
897         uc->mu_cap   = rec->cr_cap;
898         uc->mu_suppgids[0] = rec->cr_suppgid1;
899         uc->mu_suppgids[1] = -1;
900
901         rr->rr_fid1 = &rec->cr_fid1;
902         rr->rr_fid2 = &rec->cr_fid2;
903         attr->la_mode = rec->cr_mode;
904         attr->la_rdev  = rec->cr_rdev;
905         attr->la_uid   = rec->cr_fsuid;
906         attr->la_gid   = rec->cr_fsgid;
907         attr->la_ctime = rec->cr_time;
908         attr->la_mtime = rec->cr_time;
909         attr->la_atime = rec->cr_time;
910         attr->la_valid = LA_MODE | LA_RDEV | LA_UID | LA_GID |
911                          LA_CTIME | LA_MTIME | LA_ATIME;
912         memset(&sp->u, 0, sizeof(sp->u));
913         sp->sp_cr_flags = get_mrc_cr_flags(rec);
914         sp->sp_ck_split = !!(rec->cr_bias & MDS_CHECK_SPLIT);
915         info->mti_cross_ref = !!(rec->cr_bias & MDS_CROSS_REF);
916
917         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
918                 mdt_set_capainfo(info, 0, rr->rr_fid1,
919                                  req_capsule_client_get(pill, &RMF_CAPA1));
920         mdt_set_capainfo(info, 1, rr->rr_fid2, BYPASS_CAPA);
921
922         if (!info->mti_cross_ref) {
923                 rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
924                 rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME,
925                                                       RCL_CLIENT) - 1;
926                 LASSERT(rr->rr_name && rr->rr_namelen > 0);
927         } else {
928                 rr->rr_name = NULL;
929                 rr->rr_namelen = 0;
930         }
931
932 #ifdef CONFIG_FS_POSIX_ACL
933         if (sp->sp_cr_flags & MDS_CREATE_RMT_ACL) {
934                 if (S_ISDIR(attr->la_mode))
935                         sp->u.sp_pfid = rr->rr_fid1;
936                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_RMT_ACL);
937                 LASSERT(req_capsule_field_present(pill, &RMF_EADATA,
938                                                   RCL_CLIENT));
939                 sp->u.sp_ea.eadata = req_capsule_client_get(pill, &RMF_EADATA);
940                 sp->u.sp_ea.eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
941                                                              RCL_CLIENT);
942                 sp->u.sp_ea.fid = rr->rr_fid1;
943                 RETURN(0);
944         }
945 #endif
946         if (S_ISDIR(attr->la_mode)) {
947                 /* pass parent fid for cross-ref cases */
948                 sp->u.sp_pfid = rr->rr_fid1;
949                 if (sp->sp_cr_flags & MDS_CREATE_SLAVE_OBJ) {
950                         /* create salve object req, need
951                          * unpack split ea here
952                          */
953                        req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_SLAVE);
954                        LASSERT(req_capsule_field_present(pill, &RMF_EADATA,
955                                                          RCL_CLIENT));
956                        sp->u.sp_ea.eadata = req_capsule_client_get(pill,
957                                                                    &RMF_EADATA);
958                        sp->u.sp_ea.eadatalen = req_capsule_get_size(pill,
959                                                                     &RMF_EADATA,
960                                                                     RCL_CLIENT);
961                        sp->u.sp_ea.fid = rr->rr_fid1;
962                        RETURN(0);
963                 }
964                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_RMT_ACL);
965         } else if (S_ISLNK(attr->la_mode)) {
966                 const char *tgt = NULL;
967
968                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_SYM);
969                 if (req_capsule_get_size(pill, &RMF_SYMTGT, RCL_CLIENT)) {
970                         tgt = req_capsule_client_get(pill, &RMF_SYMTGT);
971                         sp->u.sp_symname = tgt;
972                 }
973                 if (tgt == NULL)
974                         RETURN(-EFAULT);
975         } else {
976                 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_RMT_ACL);
977         }
978         rc = mdt_dlmreq_unpack(info);
979         RETURN(rc);
980 }
981
982 static int mdt_link_unpack(struct mdt_thread_info *info)
983 {
984         struct md_ucred         *uc  = mdt_ucred(info);
985         struct mdt_rec_link     *rec;
986         struct lu_attr          *attr = &info->mti_attr.ma_attr;
987         struct mdt_reint_record *rr = &info->mti_rr;
988         struct req_capsule      *pill = info->mti_pill;
989         int rc;
990         ENTRY;
991
992         CLASSERT(sizeof(struct mdt_rec_link) == sizeof(struct mdt_rec_reint));
993         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
994         if (rec == NULL)
995                 RETURN(-EFAULT);
996
997         uc->mu_fsuid = rec->lk_fsuid;
998         uc->mu_fsgid = rec->lk_fsgid;
999         uc->mu_cap   = rec->lk_cap;
1000         uc->mu_suppgids[0] = rec->lk_suppgid1;
1001         uc->mu_suppgids[1] = rec->lk_suppgid2;
1002
1003         attr->la_uid = rec->lk_fsuid;
1004         attr->la_gid = rec->lk_fsgid;
1005         rr->rr_fid1 = &rec->lk_fid1;
1006         rr->rr_fid2 = &rec->lk_fid2;
1007         attr->la_ctime = rec->lk_time;
1008         attr->la_mtime = rec->lk_time;
1009         attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME;
1010
1011         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
1012                 mdt_set_capainfo(info, 0, rr->rr_fid1,
1013                                  req_capsule_client_get(pill, &RMF_CAPA1));
1014         if (req_capsule_get_size(pill, &RMF_CAPA2, RCL_CLIENT))
1015                 mdt_set_capainfo(info, 1, rr->rr_fid2,
1016                                  req_capsule_client_get(pill, &RMF_CAPA2));
1017
1018         info->mti_spec.sp_ck_split = !!(rec->lk_bias & MDS_CHECK_SPLIT);
1019         info->mti_cross_ref = !!(rec->lk_bias & MDS_CROSS_REF);
1020         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1021         if (rr->rr_name == NULL)
1022                 RETURN(-EFAULT);
1023         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1024         if (!info->mti_cross_ref)
1025                 LASSERT(rr->rr_namelen > 0);
1026
1027         rc = mdt_dlmreq_unpack(info);
1028         RETURN(rc);
1029 }
1030
1031 static int mdt_unlink_unpack(struct mdt_thread_info *info)
1032 {
1033         struct md_ucred         *uc  = mdt_ucred(info);
1034         struct mdt_rec_unlink   *rec;
1035         struct md_attr          *ma = &info->mti_attr;
1036         struct lu_attr          *attr = &info->mti_attr.ma_attr;
1037         struct mdt_reint_record *rr = &info->mti_rr;
1038         struct req_capsule      *pill = info->mti_pill;
1039         int rc;
1040         ENTRY;
1041
1042         CLASSERT(sizeof(struct mdt_rec_unlink) == sizeof(struct mdt_rec_reint));
1043         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1044         if (rec == NULL)
1045                 RETURN(-EFAULT);
1046
1047         uc->mu_fsuid = rec->ul_fsuid;
1048         uc->mu_fsgid = rec->ul_fsgid;
1049         uc->mu_cap   = rec->ul_cap;
1050         uc->mu_suppgids[0] = rec->ul_suppgid1;
1051         uc->mu_suppgids[1] = -1;
1052
1053         attr->la_uid = rec->ul_fsuid;
1054         attr->la_gid = rec->ul_fsgid;
1055         rr->rr_fid1 = &rec->ul_fid1;
1056         rr->rr_fid2 = &rec->ul_fid2;
1057         attr->la_ctime = rec->ul_time;
1058         attr->la_mtime = rec->ul_time;
1059         attr->la_mode  = rec->ul_mode;
1060         attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME | LA_MODE;
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
1066         info->mti_cross_ref = !!(rec->ul_bias & MDS_CROSS_REF);
1067         if (!info->mti_cross_ref) {
1068                 rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1069                 rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1070                 if (rr->rr_name == NULL || rr->rr_namelen == 0)
1071                         RETURN(-EFAULT);
1072         } else {
1073                 rr->rr_name = NULL;
1074                 rr->rr_namelen = 0;
1075         }
1076         info->mti_spec.sp_ck_split = !!(rec->ul_bias & MDS_CHECK_SPLIT);
1077         if (rec->ul_bias & MDS_VTX_BYPASS)
1078                 ma->ma_attr_flags |= MDS_VTX_BYPASS;
1079         else
1080                 ma->ma_attr_flags &= ~MDS_VTX_BYPASS;
1081
1082         info->mti_spec.no_create = !!req_is_replay(mdt_info_req(info));
1083
1084         rc = mdt_dlmreq_unpack(info);
1085         RETURN(rc);
1086 }
1087
1088 static int mdt_rename_unpack(struct mdt_thread_info *info)
1089 {
1090         struct md_ucred         *uc = mdt_ucred(info);
1091         struct mdt_rec_rename   *rec;
1092         struct md_attr          *ma = &info->mti_attr;
1093         struct lu_attr          *attr = &info->mti_attr.ma_attr;
1094         struct mdt_reint_record *rr = &info->mti_rr;
1095         struct req_capsule      *pill = info->mti_pill;
1096         int rc;
1097         ENTRY;
1098
1099         CLASSERT(sizeof(struct mdt_rec_rename) == sizeof(struct mdt_rec_reint));
1100         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1101         if (rec == NULL)
1102                 RETURN(-EFAULT);
1103
1104         uc->mu_fsuid = rec->rn_fsuid;
1105         uc->mu_fsgid = rec->rn_fsgid;
1106         uc->mu_cap   = rec->rn_cap;
1107         uc->mu_suppgids[0] = rec->rn_suppgid1;
1108         uc->mu_suppgids[1] = rec->rn_suppgid2;
1109
1110         attr->la_uid = rec->rn_fsuid;
1111         attr->la_gid = rec->rn_fsgid;
1112         rr->rr_fid1 = &rec->rn_fid1;
1113         rr->rr_fid2 = &rec->rn_fid2;
1114         attr->la_ctime = rec->rn_time;
1115         attr->la_mtime = rec->rn_time;
1116         /* rename_tgt contains the mode already */
1117         attr->la_mode = rec->rn_mode;
1118         attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME | LA_MODE;
1119
1120         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
1121                 mdt_set_capainfo(info, 0, rr->rr_fid1,
1122                                  req_capsule_client_get(pill, &RMF_CAPA1));
1123         if (req_capsule_get_size(pill, &RMF_CAPA2, RCL_CLIENT))
1124                 mdt_set_capainfo(info, 1, rr->rr_fid2,
1125                                  req_capsule_client_get(pill, &RMF_CAPA2));
1126
1127         info->mti_spec.sp_ck_split = !!(rec->rn_bias & MDS_CHECK_SPLIT);
1128         info->mti_cross_ref = !!(rec->rn_bias & MDS_CROSS_REF);
1129         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1130         rr->rr_tgt = req_capsule_client_get(pill, &RMF_SYMTGT);
1131         if (rr->rr_name == NULL || rr->rr_tgt == NULL)
1132                 RETURN(-EFAULT);
1133         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1134         rr->rr_tgtlen = req_capsule_get_size(pill, &RMF_SYMTGT, RCL_CLIENT) - 1;
1135         if (!info->mti_cross_ref)
1136                 LASSERT(rr->rr_namelen > 0 && rr->rr_tgtlen > 0);
1137         if (rec->rn_bias & MDS_VTX_BYPASS)
1138                 ma->ma_attr_flags |= MDS_VTX_BYPASS;
1139         else
1140                 ma->ma_attr_flags &= ~MDS_VTX_BYPASS;
1141
1142         info->mti_spec.no_create = !!req_is_replay(mdt_info_req(info));
1143
1144         rc = mdt_dlmreq_unpack(info);
1145         RETURN(rc);
1146 }
1147
1148 static int mdt_open_unpack(struct mdt_thread_info *info)
1149 {
1150         struct md_ucred         *uc = mdt_ucred(info);
1151         struct mdt_rec_create   *rec;
1152         struct lu_attr          *attr = &info->mti_attr.ma_attr;
1153         struct req_capsule      *pill = info->mti_pill;
1154         struct mdt_reint_record *rr   = &info->mti_rr;
1155         struct ptlrpc_request   *req  = mdt_info_req(info);
1156         struct md_op_spec       *sp   = &info->mti_spec;
1157         ENTRY;
1158
1159         CLASSERT(sizeof(struct mdt_rec_create) == sizeof(struct mdt_rec_reint));
1160         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1161         if (rec == NULL)
1162                 RETURN(-EFAULT);
1163
1164         uc->mu_fsuid = rec->cr_fsuid;
1165         uc->mu_fsgid = rec->cr_fsgid;
1166         uc->mu_cap   = rec->cr_cap;
1167         uc->mu_suppgids[0] = rec->cr_suppgid1;
1168         uc->mu_suppgids[1] = rec->cr_suppgid2;
1169
1170         rr->rr_fid1   = &rec->cr_fid1;
1171         rr->rr_fid2   = &rec->cr_fid2;
1172         rr->rr_handle = &rec->cr_old_handle;
1173         attr->la_mode = rec->cr_mode;
1174         attr->la_rdev  = rec->cr_rdev;
1175         attr->la_uid   = rec->cr_fsuid;
1176         attr->la_gid   = rec->cr_fsgid;
1177         attr->la_ctime = rec->cr_time;
1178         attr->la_mtime = rec->cr_time;
1179         attr->la_atime = rec->cr_time;
1180         attr->la_valid = LA_MODE  | LA_RDEV  | LA_UID   | LA_GID |
1181                          LA_CTIME | LA_MTIME | LA_ATIME;
1182         memset(&info->mti_spec.u, 0, sizeof(info->mti_spec.u));
1183         info->mti_spec.sp_cr_flags = get_mrc_cr_flags(rec);
1184         /* Do not trigger ASSERTION if client miss to set such flags. */
1185         if (unlikely(info->mti_spec.sp_cr_flags == 0))
1186                 RETURN(-EPROTO);
1187         info->mti_replayepoch = rec->cr_ioepoch;
1188
1189         info->mti_spec.sp_ck_split = !!(rec->cr_bias & MDS_CHECK_SPLIT);
1190         info->mti_cross_ref = !!(rec->cr_bias & MDS_CROSS_REF);
1191
1192         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
1193                 mdt_set_capainfo(info, 0, rr->rr_fid1,
1194                                  req_capsule_client_get(pill, &RMF_CAPA1));
1195         if (req_is_replay(req) &&
1196             req_capsule_get_size(pill, &RMF_CAPA2, RCL_CLIENT)) {
1197 #if 0
1198                 mdt_set_capainfo(info, 1, rr->rr_fid2,
1199                                  req_capsule_client_get(pill, &RMF_CAPA2));
1200 #else
1201                 /*
1202                  * FIXME: capa in replay open request might have expired,
1203                  * bypass capa check. Security hole?
1204                  */
1205                 mdt_set_capainfo(info, 0, rr->rr_fid1, BYPASS_CAPA);
1206                 mdt_set_capainfo(info, 1, rr->rr_fid2, BYPASS_CAPA);
1207 #endif
1208         }
1209
1210         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1211         if (rr->rr_name == NULL)
1212                 RETURN(-EFAULT);
1213         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1214
1215         sp->u.sp_ea.eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
1216                                                      RCL_CLIENT);
1217         if (sp->u.sp_ea.eadatalen) {
1218                 sp->u.sp_ea.eadata = req_capsule_client_get(pill, &RMF_EADATA);
1219                 sp->no_create = !!req_is_replay(req);
1220         }
1221
1222         RETURN(0);
1223 }
1224
1225 static int mdt_setxattr_unpack(struct mdt_thread_info *info)
1226 {
1227         struct mdt_reint_record   *rr   = &info->mti_rr;
1228         struct md_ucred           *uc   = mdt_ucred(info);
1229         struct lu_attr            *attr = &info->mti_attr.ma_attr;
1230         struct req_capsule        *pill = info->mti_pill;
1231         struct mdt_rec_setxattr   *rec;
1232         ENTRY;
1233
1234
1235         CLASSERT(sizeof(struct mdt_rec_setxattr) ==
1236                          sizeof(struct mdt_rec_reint));
1237
1238         rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1239         if (rec == NULL)
1240                 RETURN(-EFAULT);
1241
1242         uc->mu_fsuid  = rec->sx_fsuid;
1243         uc->mu_fsgid  = rec->sx_fsgid;
1244         uc->mu_cap    = rec->sx_cap;
1245         uc->mu_suppgids[0] = rec->sx_suppgid1;
1246         uc->mu_suppgids[1] = -1;
1247
1248         rr->rr_opcode = rec->sx_opcode;
1249         rr->rr_fid1   = &rec->sx_fid;
1250         attr->la_valid = rec->sx_valid;
1251         attr->la_ctime = rec->sx_time;
1252         attr->la_size = rec->sx_size;
1253         attr->la_flags = rec->sx_flags;
1254
1255         if (req_capsule_get_size(pill, &RMF_CAPA1, RCL_CLIENT))
1256                 mdt_set_capainfo(info, 0, rr->rr_fid1,
1257                                  req_capsule_client_get(pill, &RMF_CAPA1));
1258         else
1259                 mdt_set_capainfo(info, 0, rr->rr_fid1, BYPASS_CAPA);
1260
1261         rr->rr_name = req_capsule_client_get(pill, &RMF_NAME);
1262         if (rr->rr_name == NULL)
1263                 RETURN(-EFAULT);
1264         rr->rr_namelen = req_capsule_get_size(pill, &RMF_NAME, RCL_CLIENT) - 1;
1265         LASSERT(rr->rr_namelen > 0);
1266
1267         rr->rr_eadatalen = req_capsule_get_size(pill, &RMF_EADATA, RCL_CLIENT);
1268         if (rr->rr_eadatalen > 0) {
1269                 rr->rr_eadata = req_capsule_client_get(pill, &RMF_EADATA);
1270                 if (rr->rr_eadata == NULL)
1271                         RETURN(-EFAULT);
1272         }
1273
1274         RETURN(0);
1275 }
1276
1277
1278 typedef int (*reint_unpacker)(struct mdt_thread_info *info);
1279
1280 static reint_unpacker mdt_reint_unpackers[REINT_MAX] = {
1281         [REINT_SETATTR]  = mdt_setattr_unpack,
1282         [REINT_CREATE]   = mdt_create_unpack,
1283         [REINT_LINK]     = mdt_link_unpack,
1284         [REINT_UNLINK]   = mdt_unlink_unpack,
1285         [REINT_RENAME]   = mdt_rename_unpack,
1286         [REINT_OPEN]     = mdt_open_unpack,
1287         [REINT_SETXATTR] = mdt_setxattr_unpack
1288 };
1289
1290 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op)
1291 {
1292         int rc;
1293         ENTRY;
1294
1295         memset(&info->mti_rr, 0, sizeof(info->mti_rr));
1296         if (op < REINT_MAX && mdt_reint_unpackers[op] != NULL) {
1297                 info->mti_rr.rr_opcode = op;
1298                 rc = mdt_reint_unpackers[op](info);
1299         } else {
1300                 CERROR("Unexpected opcode %d\n", op);
1301                 rc = -EFAULT;
1302         }
1303         RETURN(rc);
1304 }