4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2015, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/mdt/mdt_lib.c
38 * Lustre Metadata Target (mdt) request unpacking helper.
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>
49 #define DEBUG_SUBSYSTEM S_MDS
51 #include <linux/user_namespace.h>
52 #ifdef HAVE_UIDGID_HEADER
53 # include <linux/uidgid.h>
55 #include "mdt_internal.h"
56 #include <lnet/nidstr.h>
57 #include <lustre_nodemap.h>
59 typedef enum ucred_init_type {
65 void mdt_exit_ucred(struct mdt_thread_info *info)
67 struct lu_ucred *uc = mdt_ucred(info);
68 struct mdt_device *mdt = info->mti_mdt;
71 if (uc->uc_valid != UCRED_INIT) {
72 uc->uc_suppgids[0] = uc->uc_suppgids[1] = -1;
74 put_group_info(uc->uc_ginfo);
77 if (uc->uc_identity) {
78 mdt_identity_put(mdt->mdt_identity_cache,
80 uc->uc_identity = NULL;
82 uc->uc_valid = UCRED_INIT;
86 static int match_nosquash_list(struct rw_semaphore *sem,
87 struct list_head *nidlist,
93 rc = cfs_match_nid(peernid, nidlist);
98 /* root_squash for inter-MDS operations */
99 static int mdt_root_squash(struct mdt_thread_info *info, lnet_nid_t peernid)
101 struct lu_ucred *ucred = mdt_ucred(info);
102 struct root_squash_info *squash = &info->mti_mdt->mdt_squash;
105 LASSERT(ucred != NULL);
106 if (!squash->rsi_uid || ucred->uc_fsuid)
109 if (match_nosquash_list(&squash->rsi_sem,
110 &squash->rsi_nosquash_nids,
112 CDEBUG(D_OTHER, "%s is in nosquash_nids list\n",
113 libcfs_nid2str(peernid));
117 CDEBUG(D_OTHER, "squash req from %s, (%d:%d/%x)=>(%d:%d/%x)\n",
118 libcfs_nid2str(peernid),
119 ucred->uc_fsuid, ucred->uc_fsgid, ucred->uc_cap,
120 squash->rsi_uid, squash->rsi_gid, 0);
122 ucred->uc_fsuid = squash->rsi_uid;
123 ucred->uc_fsgid = squash->rsi_gid;
125 ucred->uc_suppgids[0] = -1;
126 ucred->uc_suppgids[1] = -1;
131 static void ucred_set_jobid(struct mdt_thread_info *info, struct lu_ucred *uc)
133 struct ptlrpc_request *req = mdt_info_req(info);
134 const char *jobid = mdt_req_get_jobid(req);
136 /* set jobid if specified. */
138 strlcpy(uc->uc_jobid, jobid, sizeof(uc->uc_jobid));
140 uc->uc_jobid[0] = '\0';
143 static int new_init_ucred(struct mdt_thread_info *info, ucred_init_type_t type,
144 void *buf, bool drop_fs_cap)
146 struct ptlrpc_request *req = mdt_info_req(info);
147 struct mdt_device *mdt = info->mti_mdt;
148 struct ptlrpc_user_desc *pud = req->rq_user_desc;
149 struct lu_ucred *ucred = mdt_ucred(info);
150 lnet_nid_t peernid = req->rq_peer.nid;
152 __u32 remote = exp_connect_rmtclient(info->mti_exp);
159 LASSERT(req->rq_auth_gss);
160 LASSERT(!req->rq_auth_usr_mdt);
161 LASSERT(req->rq_user_desc);
162 LASSERT(ucred != NULL);
164 ucred->uc_valid = UCRED_INVALID;
166 ucred->uc_o_uid = pud->pud_uid;
167 ucred->uc_o_gid = pud->pud_gid;
168 ucred->uc_o_fsuid = pud->pud_fsuid;
169 ucred->uc_o_fsgid = pud->pud_fsgid;
171 if (type == BODY_INIT) {
172 struct mdt_body *body = (struct mdt_body *)buf;
174 ucred->uc_suppgids[0] = body->mbo_suppgid;
175 ucred->uc_suppgids[1] = -1;
178 /* sanity check: we expect the uid which client claimed is true */
180 if (!uid_valid(make_kuid(&init_user_ns, req->rq_auth_mapped_uid))) {
181 CDEBUG(D_SEC, "remote user not mapped, deny access!\n");
185 if (ptlrpc_user_desc_do_idmap(req, pud))
188 if (req->rq_auth_mapped_uid != pud->pud_uid) {
189 CDEBUG(D_SEC, "remote client %s: auth/mapped uid %u/%u "
190 "while client claims %u:%u/%u:%u\n",
191 libcfs_nid2str(peernid), req->rq_auth_uid,
192 req->rq_auth_mapped_uid,
193 pud->pud_uid, pud->pud_gid,
194 pud->pud_fsuid, pud->pud_fsgid);
198 if (req->rq_auth_uid != pud->pud_uid) {
199 CDEBUG(D_SEC, "local client %s: auth uid %u "
200 "while client claims %u:%u/%u:%u\n",
201 libcfs_nid2str(peernid), req->rq_auth_uid,
202 pud->pud_uid, pud->pud_gid,
203 pud->pud_fsuid, pud->pud_fsgid);
208 if (is_identity_get_disabled(mdt->mdt_identity_cache)) {
210 CDEBUG(D_SEC, "remote client must run with identity_get "
214 ucred->uc_identity = NULL;
215 perm = CFS_SETUID_PERM | CFS_SETGID_PERM |
219 struct md_identity *identity;
221 identity = mdt_identity_get(mdt->mdt_identity_cache,
223 if (IS_ERR(identity)) {
224 if (unlikely(PTR_ERR(identity) == -EREMCHG &&
226 ucred->uc_identity = NULL;
227 perm = CFS_SETUID_PERM | CFS_SETGID_PERM |
230 CDEBUG(D_SEC, "Deny access without identity: uid %u\n",
235 ucred->uc_identity = identity;
236 perm = mdt_identity_get_perm(ucred->uc_identity,
241 /* find out the setuid/setgid attempt */
242 setuid = (pud->pud_uid != pud->pud_fsuid);
243 setgid = ((pud->pud_gid != pud->pud_fsgid) ||
244 (ucred->uc_identity &&
245 (pud->pud_gid != ucred->uc_identity->mi_gid)));
247 /* check permission of setuid */
248 if (setuid && !(perm & CFS_SETUID_PERM)) {
249 CDEBUG(D_SEC, "mdt blocked setuid attempt (%u -> %u) from %s\n",
250 pud->pud_uid, pud->pud_fsuid, libcfs_nid2str(peernid));
251 GOTO(out, rc = -EACCES);
254 /* check permission of setgid */
255 if (setgid && !(perm & CFS_SETGID_PERM)) {
256 CDEBUG(D_SEC, "mdt blocked setgid attempt (%u:%u/%u:%u -> %u) "
257 "from %s\n", pud->pud_uid, pud->pud_gid,
258 pud->pud_fsuid, pud->pud_fsgid,
259 ucred->uc_identity->mi_gid, libcfs_nid2str(peernid));
260 GOTO(out, rc = -EACCES);
264 * NB: remote client not allowed to setgroups anyway.
266 if (!remote && perm & CFS_SETGRP_PERM) {
267 if (pud->pud_ngroups) {
268 /* setgroups for local client */
269 ucred->uc_ginfo = groups_alloc(pud->pud_ngroups);
270 if (!ucred->uc_ginfo) {
271 CERROR("failed to alloc %d groups\n",
273 GOTO(out, rc = -ENOMEM);
276 lustre_groups_from_list(ucred->uc_ginfo,
278 lustre_groups_sort(ucred->uc_ginfo);
280 ucred->uc_ginfo = NULL;
283 ucred->uc_suppgids[0] = -1;
284 ucred->uc_suppgids[1] = -1;
285 ucred->uc_ginfo = NULL;
288 ucred->uc_uid = pud->pud_uid;
289 ucred->uc_gid = pud->pud_gid;
290 ucred->uc_fsuid = pud->pud_fsuid;
291 ucred->uc_fsgid = pud->pud_fsgid;
293 /* process root_squash here. */
294 mdt_root_squash(info, peernid);
296 /* remove fs privilege for non-root user. */
297 if (ucred->uc_fsuid && drop_fs_cap)
298 ucred->uc_cap = pud->pud_cap & ~CFS_CAP_FS_MASK;
300 ucred->uc_cap = pud->pud_cap;
301 if (remote && !(perm & CFS_RMTOWN_PERM))
302 ucred->uc_cap &= ~(CFS_CAP_SYS_RESOURCE_MASK |
304 ucred->uc_valid = UCRED_NEW;
305 ucred_set_jobid(info, ucred);
311 if (ucred->uc_ginfo) {
312 put_group_info(ucred->uc_ginfo);
313 ucred->uc_ginfo = NULL;
315 if (ucred->uc_identity) {
316 mdt_identity_put(mdt->mdt_identity_cache,
318 ucred->uc_identity = NULL;
326 * Check whether allow the client to set supplementary group IDs or not.
328 * \param[in] info pointer to the thread context
329 * \param[in] uc pointer to the RPC user descriptor
331 * \retval true if allow to set supplementary group IDs
332 * \retval false for other cases
334 bool allow_client_chgrp(struct mdt_thread_info *info, struct lu_ucred *uc)
336 __u32 remote = exp_connect_rmtclient(info->mti_exp);
339 /* 1. If identity_upcall is disabled, then forbid remote client to set
340 * supplementary group IDs, but permit local client to do that. */
341 if (is_identity_get_disabled(info->mti_mdt->mdt_identity_cache)) {
348 /* 2. If fail to get related identities, then forbid any client to
349 * set supplementary group IDs. */
350 if (uc->uc_identity == NULL)
353 /* 3. Check the permission in the identities. */
354 perm = mdt_identity_get_perm(uc->uc_identity, remote,
355 mdt_info_req(info)->rq_peer.nid);
356 if (perm & CFS_SETGRP_PERM)
362 int mdt_check_ucred(struct mdt_thread_info *info)
364 struct ptlrpc_request *req = mdt_info_req(info);
365 struct mdt_device *mdt = info->mti_mdt;
366 struct ptlrpc_user_desc *pud = req->rq_user_desc;
367 struct lu_ucred *ucred = mdt_ucred(info);
368 struct md_identity *identity = NULL;
369 lnet_nid_t peernid = req->rq_peer.nid;
371 __u32 remote = exp_connect_rmtclient(info->mti_exp);
378 LASSERT(ucred != NULL);
379 if ((ucred->uc_valid == UCRED_OLD) || (ucred->uc_valid == UCRED_NEW))
382 if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc)
385 /* sanity check: if we use strong authentication, we expect the
386 * uid which client claimed is true */
388 if (!uid_valid(make_kuid(&init_user_ns, req->rq_auth_mapped_uid))) {
389 CDEBUG(D_SEC, "remote user not mapped, deny access!\n");
393 if (ptlrpc_user_desc_do_idmap(req, pud))
396 if (req->rq_auth_mapped_uid != pud->pud_uid) {
397 CDEBUG(D_SEC, "remote client %s: auth/mapped uid %u/%u "
398 "while client claims %u:%u/%u:%u\n",
399 libcfs_nid2str(peernid), req->rq_auth_uid,
400 req->rq_auth_mapped_uid,
401 pud->pud_uid, pud->pud_gid,
402 pud->pud_fsuid, pud->pud_fsgid);
406 if (req->rq_auth_uid != pud->pud_uid) {
407 CDEBUG(D_SEC, "local client %s: auth uid %u "
408 "while client claims %u:%u/%u:%u\n",
409 libcfs_nid2str(peernid), req->rq_auth_uid,
410 pud->pud_uid, pud->pud_gid,
411 pud->pud_fsuid, pud->pud_fsgid);
416 if (is_identity_get_disabled(mdt->mdt_identity_cache)) {
418 CDEBUG(D_SEC, "remote client must run with identity_get "
425 identity = mdt_identity_get(mdt->mdt_identity_cache, pud->pud_uid);
426 if (IS_ERR(identity)) {
427 if (unlikely(PTR_ERR(identity) == -EREMCHG &&
431 CDEBUG(D_SEC, "Deny access without identity: uid %u\n",
437 perm = mdt_identity_get_perm(identity, remote, peernid);
438 /* find out the setuid/setgid attempt */
439 setuid = (pud->pud_uid != pud->pud_fsuid);
440 setgid = (pud->pud_gid != pud->pud_fsgid ||
441 pud->pud_gid != identity->mi_gid);
443 /* check permission of setuid */
444 if (setuid && !(perm & CFS_SETUID_PERM)) {
445 CDEBUG(D_SEC, "mdt blocked setuid attempt (%u -> %u) from %s\n",
446 pud->pud_uid, pud->pud_fsuid, libcfs_nid2str(peernid));
447 GOTO(out, rc = -EACCES);
450 /* check permission of setgid */
451 if (setgid && !(perm & CFS_SETGID_PERM)) {
452 CDEBUG(D_SEC, "mdt blocked setgid attempt (%u:%u/%u:%u -> %u) "
453 "from %s\n", pud->pud_uid, pud->pud_gid,
454 pud->pud_fsuid, pud->pud_fsgid, identity->mi_gid,
455 libcfs_nid2str(peernid));
456 GOTO(out, rc = -EACCES);
462 mdt_identity_put(mdt->mdt_identity_cache, identity);
466 static int old_init_ucred_common(struct mdt_thread_info *info,
469 struct lu_ucred *uc = mdt_ucred(info);
470 struct mdt_device *mdt = info->mti_mdt;
471 struct md_identity *identity = NULL;
472 struct lu_nodemap *nodemap =
473 info->mti_exp->exp_target_data.ted_nodemap;
475 if (nodemap == NULL) {
476 CDEBUG(D_SEC, "%s: cli %s/%p nodemap not set.\n",
477 mdt2obd_dev(mdt)->obd_name,
478 info->mti_exp->exp_client_uuid.uuid, info->mti_exp);
482 if (!is_identity_get_disabled(mdt->mdt_identity_cache)) {
483 identity = mdt_identity_get(mdt->mdt_identity_cache,
485 if (IS_ERR(identity)) {
486 if (unlikely(PTR_ERR(identity) == -EREMCHG ||
487 uc->uc_cap & CFS_CAP_FS_MASK)) {
490 CDEBUG(D_SEC, "Deny access without identity: "
491 "uid %u\n", uc->uc_fsuid);
496 uc->uc_identity = identity;
498 if (uc->uc_o_uid == nodemap->nm_squash_uid) {
499 uc->uc_fsuid = nodemap->nm_squash_uid;
500 uc->uc_fsgid = nodemap->nm_squash_gid;
502 uc->uc_suppgids[0] = -1;
503 uc->uc_suppgids[1] = -1;
506 /* process root_squash here. */
507 mdt_root_squash(info, mdt_info_req(info)->rq_peer.nid);
509 /* remove fs privilege for non-root user. */
510 if (uc->uc_fsuid && drop_fs_cap)
511 uc->uc_cap &= ~CFS_CAP_FS_MASK;
512 uc->uc_valid = UCRED_OLD;
513 ucred_set_jobid(info, uc);
518 static int old_init_ucred(struct mdt_thread_info *info,
519 struct mdt_body *body, bool drop_fs_cap)
521 struct lu_ucred *uc = mdt_ucred(info);
522 struct lu_nodemap *nodemap =
523 info->mti_exp->exp_target_data.ted_nodemap;
527 body->mbo_uid = nodemap_map_id(nodemap, NODEMAP_UID,
528 NODEMAP_CLIENT_TO_FS, body->mbo_uid);
529 body->mbo_gid = nodemap_map_id(nodemap, NODEMAP_GID,
530 NODEMAP_CLIENT_TO_FS, body->mbo_gid);
531 body->mbo_fsuid = nodemap_map_id(nodemap, NODEMAP_UID,
532 NODEMAP_CLIENT_TO_FS, body->mbo_fsuid);
533 body->mbo_fsgid = nodemap_map_id(nodemap, NODEMAP_GID,
534 NODEMAP_CLIENT_TO_FS, body->mbo_fsgid);
537 uc->uc_valid = UCRED_INVALID;
538 uc->uc_o_uid = uc->uc_uid = body->mbo_uid;
539 uc->uc_o_gid = uc->uc_gid = body->mbo_gid;
540 uc->uc_o_fsuid = uc->uc_fsuid = body->mbo_fsuid;
541 uc->uc_o_fsgid = uc->uc_fsgid = body->mbo_fsgid;
542 uc->uc_suppgids[0] = body->mbo_suppgid;
543 uc->uc_suppgids[1] = -1;
545 uc->uc_cap = body->mbo_capability;
547 rc = old_init_ucred_common(info, drop_fs_cap);
552 static int old_init_ucred_reint(struct mdt_thread_info *info)
554 struct lu_ucred *uc = mdt_ucred(info);
555 struct lu_nodemap *nodemap =
556 info->mti_exp->exp_target_data.ted_nodemap;
562 uc->uc_fsuid = nodemap_map_id(nodemap, NODEMAP_UID,
563 NODEMAP_CLIENT_TO_FS, uc->uc_fsuid);
564 uc->uc_fsgid = nodemap_map_id(nodemap, NODEMAP_GID,
565 NODEMAP_CLIENT_TO_FS, uc->uc_fsgid);
567 uc->uc_valid = UCRED_INVALID;
568 uc->uc_o_uid = uc->uc_o_fsuid = uc->uc_uid = uc->uc_fsuid;
569 uc->uc_o_gid = uc->uc_o_fsgid = uc->uc_gid = uc->uc_fsgid;
572 rc = old_init_ucred_common(info, true); /* drop_fs_cap = true */
577 static inline int __mdt_init_ucred(struct mdt_thread_info *info,
578 struct mdt_body *body,
581 struct ptlrpc_request *req = mdt_info_req(info);
582 struct lu_ucred *uc = mdt_ucred(info);
585 if ((uc->uc_valid == UCRED_OLD) || (uc->uc_valid == UCRED_NEW))
588 mdt_exit_ucred(info);
590 if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc)
591 return old_init_ucred(info, body, drop_fs_cap);
593 return new_init_ucred(info, BODY_INIT, body, drop_fs_cap);
596 int mdt_init_ucred(struct mdt_thread_info *info, struct mdt_body *body)
598 return __mdt_init_ucred(info, body, true);
601 /* LU-6528 when "no_subtree_check" is set for NFS export, nfsd_set_fh_dentry()
602 * doesn't set correct fsuid explicitely, but raise capability to allow
603 * exportfs_decode_fh() to reconnect disconnected dentry into dcache. So for
604 * lookup (i.e. intent_getattr), we should keep FS capability, otherwise it
605 * will fail permission check. */
606 int mdt_init_ucred_intent_getattr(struct mdt_thread_info *info,
607 struct mdt_body *body)
609 return __mdt_init_ucred(info, body, false);
612 int mdt_init_ucred_reint(struct mdt_thread_info *info)
614 struct ptlrpc_request *req = mdt_info_req(info);
615 struct lu_ucred *uc = mdt_ucred(info);
618 if ((uc->uc_valid == UCRED_OLD) || (uc->uc_valid == UCRED_NEW))
621 mdt_exit_ucred(info);
623 if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc)
624 return old_init_ucred_reint(info);
626 return new_init_ucred(info, REC_INIT, NULL, true);
629 /* copied from lov/lov_ea.c, just for debugging, will be removed later */
630 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm, __u64 valid)
632 const struct lov_ost_data_v1 *lod;
636 if (likely(!cfs_cdebug_show(level, DEBUG_SUBSYSTEM)))
639 count = le16_to_cpu(((struct lov_user_md *)lmm)->lmm_stripe_count);
641 CDEBUG(level, "objid "DOSTID", magic 0x%08X, pattern %#X\n",
642 POSTID(&lmm->lmm_oi), le32_to_cpu(lmm->lmm_magic),
643 le32_to_cpu(lmm->lmm_pattern));
644 CDEBUG(level, "stripe_size=0x%x, stripe_count=0x%x\n",
645 le32_to_cpu(lmm->lmm_stripe_size), count);
647 /* If it's a directory or a released file, then there are
648 * no actual objects to print, so bail out. */
649 if (valid & OBD_MD_FLDIREA ||
650 le32_to_cpu(lmm->lmm_pattern) & LOV_PATTERN_F_RELEASED)
653 LASSERT(count <= LOV_MAX_STRIPE_COUNT);
654 for (i = 0, lod = lmm->lmm_objects; i < count; i++, lod++) {
657 ostid_le_to_cpu(&lod->l_ost_oi, &oi);
658 CDEBUG(level, "stripe %u idx %u subobj "DOSTID"\n",
659 i, le32_to_cpu(lod->l_ost_idx), POSTID(&oi));
663 void mdt_dump_lmv(unsigned int level, const union lmv_mds_md *lmv)
665 const struct lmv_mds_md_v1 *lmm1;
668 if (likely(!cfs_cdebug_show(level, DEBUG_SUBSYSTEM)))
671 lmm1 = &lmv->lmv_md_v1;
672 CDEBUG(level, "magic 0x%08X, master %#X stripe_count %#x\n",
673 le32_to_cpu(lmm1->lmv_magic),
674 le32_to_cpu(lmm1->lmv_master_mdt_index),
675 le32_to_cpu(lmm1->lmv_stripe_count));
677 if (le32_to_cpu(lmm1->lmv_magic) == LMV_MAGIC_STRIPE)
680 for (i = 0; i < le32_to_cpu(lmm1->lmv_stripe_count); i++) {
683 fid_le_to_cpu(&fid, &lmm1->lmv_stripe_fids[i]);
684 CDEBUG(level, "idx %u subobj "DFID"\n", i, PFID(&fid));
688 /* Shrink and/or grow reply buffers */
689 int mdt_fix_reply(struct mdt_thread_info *info)
691 struct req_capsule *pill = info->mti_pill;
692 struct mdt_body *body;
693 int md_size, md_packed = 0;
698 body = req_capsule_server_get(pill, &RMF_MDT_BODY);
699 LASSERT(body != NULL);
701 if (body->mbo_valid & (OBD_MD_FLDIREA | OBD_MD_FLEASIZE |
703 md_size = body->mbo_eadatasize;
707 acl_size = body->mbo_aclsize;
709 /* this replay - not send info to client */
710 if (info->mti_spec.no_create) {
715 CDEBUG(D_INFO, "Shrink to md_size = %d cookie/acl_size = %d\n",
720 &RMF_ACL, or &RMF_LOGCOOKIES
721 (optional) &RMF_CAPA1,
722 (optional) &RMF_CAPA2,
723 (optional) something else
726 /* MDT_MD buffer may be bigger than packed value, let's shrink all
727 * buffers before growing it */
728 if (info->mti_big_lmm_used) {
729 /* big_lmm buffer may be used even without packing the result
730 * into reply, just for internal server needs */
731 if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER))
732 md_packed = req_capsule_get_size(pill, &RMF_MDT_MD,
735 /* free big lmm if md_size is not needed */
736 if (md_size == 0 || md_packed == 0) {
737 info->mti_big_lmm_used = 0;
739 /* buffer must be allocated separately */
740 LASSERT(info->mti_attr.ma_lmm !=
741 req_capsule_server_get(pill, &RMF_MDT_MD));
742 req_capsule_shrink(pill, &RMF_MDT_MD, 0, RCL_SERVER);
744 } else if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER)) {
745 req_capsule_shrink(pill, &RMF_MDT_MD, md_size, RCL_SERVER);
748 if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
749 req_capsule_shrink(pill, &RMF_ACL, acl_size, RCL_SERVER);
750 else if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
751 req_capsule_shrink(pill, &RMF_LOGCOOKIES,
752 acl_size, RCL_SERVER);
754 if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_SERVER) &&
755 !(body->mbo_valid & OBD_MD_FLMDSCAPA))
756 req_capsule_shrink(pill, &RMF_CAPA1, 0, RCL_SERVER);
758 if (req_capsule_has_field(pill, &RMF_CAPA2, RCL_SERVER) &&
759 !(body->mbo_valid & OBD_MD_FLOSSCAPA))
760 req_capsule_shrink(pill, &RMF_CAPA2, 0, RCL_SERVER);
763 * Some more field should be shrinked if needed.
764 * This should be done by those who added fields to reply message.
767 /* Grow MD buffer if needed finally */
768 if (info->mti_big_lmm_used) {
771 LASSERT(md_size > md_packed);
772 CDEBUG(D_INFO, "Enlarge reply buffer, need extra %d bytes\n",
773 md_size - md_packed);
774 rc = req_capsule_server_grow(pill, &RMF_MDT_MD, md_size);
776 /* we can't answer with proper LOV EA, drop flags,
777 * the rc is also returned so this request is
778 * considered as failed */
779 body->mbo_valid &= ~(OBD_MD_FLDIREA | OBD_MD_FLEASIZE);
780 /* don't return transno along with error */
781 lustre_msg_set_transno(pill->rc_req->rq_repmsg, 0);
783 /* now we need to pack right LOV/LMV EA */
784 lmm = req_capsule_server_get(pill, &RMF_MDT_MD);
785 if (info->mti_attr.ma_valid & MA_LOV) {
786 LASSERT(req_capsule_get_size(pill, &RMF_MDT_MD,
788 info->mti_attr.ma_lmm_size);
789 memcpy(lmm, info->mti_attr.ma_lmm,
790 info->mti_attr.ma_lmm_size);
791 } else if (info->mti_attr.ma_valid & MA_LMV) {
792 LASSERT(req_capsule_get_size(pill, &RMF_MDT_MD,
794 info->mti_attr.ma_lmv_size);
795 memcpy(lmm, info->mti_attr.ma_lmv,
796 info->mti_attr.ma_lmv_size);
799 /* update mdt_max_mdsize so clients will be aware about that */
800 if (info->mti_mdt->mdt_max_mdsize < info->mti_attr.ma_lmm_size)
801 info->mti_mdt->mdt_max_mdsize =
802 info->mti_attr.ma_lmm_size;
803 info->mti_big_lmm_used = 0;
809 /* if object is dying, pack the lov/llog data,
810 * parameter info->mti_attr should be valid at this point! */
811 int mdt_handle_last_unlink(struct mdt_thread_info *info, struct mdt_object *mo,
812 const struct md_attr *ma)
814 struct mdt_body *repbody;
815 const struct lu_attr *la = &ma->ma_attr;
818 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
819 LASSERT(repbody != NULL);
821 if (ma->ma_valid & MA_INODE)
822 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(mo));
824 if (ma->ma_valid & MA_LOV) {
825 CERROR("No need in LOV EA upon unlink\n");
828 repbody->mbo_eadatasize = 0;
833 static __u64 mdt_attr_valid_xlate(__u64 in, struct mdt_reint_record *rr,
839 if (in & MDS_ATTR_MODE)
841 if (in & MDS_ATTR_UID)
843 if (in & MDS_ATTR_GID)
845 if (in & MDS_ATTR_SIZE)
847 if (in & MDS_ATTR_BLOCKS)
849 if (in & MDS_ATTR_ATIME_SET)
851 if (in & MDS_ATTR_CTIME_SET)
853 if (in & MDS_ATTR_MTIME_SET)
855 if (in & MDS_ATTR_ATTR_FLAG)
857 if (in & MDS_ATTR_KILL_SUID)
859 if (in & MDS_ATTR_KILL_SGID)
862 if (in & MDS_ATTR_FROM_OPEN)
863 rr->rr_flags |= MRF_OPEN_TRUNC;
864 if (in & MDS_OPEN_OWNEROVERRIDE)
865 ma->ma_attr_flags |= MDS_OWNEROVERRIDE;
866 if (in & MDS_ATTR_FORCE)
867 ma->ma_attr_flags |= MDS_PERM_BYPASS;
869 in &= ~(MDS_ATTR_MODE | MDS_ATTR_UID | MDS_ATTR_GID |
870 MDS_ATTR_ATIME | MDS_ATTR_MTIME | MDS_ATTR_CTIME |
871 MDS_ATTR_ATIME_SET | MDS_ATTR_CTIME_SET | MDS_ATTR_MTIME_SET |
872 MDS_ATTR_SIZE | MDS_ATTR_BLOCKS | MDS_ATTR_ATTR_FLAG |
873 MDS_ATTR_FORCE | MDS_ATTR_KILL_SUID | MDS_ATTR_KILL_SGID |
874 MDS_ATTR_FROM_OPEN | MDS_OPEN_OWNEROVERRIDE);
876 CERROR("Unknown attr bits: "LPX64"\n", in);
882 int mdt_name_unpack(struct req_capsule *pill,
883 const struct req_msg_field *field,
885 enum mdt_name_flags flags)
887 ln->ln_name = req_capsule_client_get(pill, field);
888 ln->ln_namelen = req_capsule_get_size(pill, field, RCL_CLIENT) - 1;
890 if (!lu_name_is_valid(ln)) {
897 if ((flags & MNF_FIX_ANON) &&
898 ln->ln_namelen == 1 && ln->ln_name[0] == '/') {
899 /* Newer (3.x) kernels use a name of "/" for the
900 * "anonymous" disconnected dentries from NFS
901 * filehandle conversion. See d_obtain_alias(). */
909 static int mdt_setattr_unpack_rec(struct mdt_thread_info *info)
911 struct lu_ucred *uc = mdt_ucred(info);
912 struct md_attr *ma = &info->mti_attr;
913 struct lu_attr *la = &ma->ma_attr;
914 struct req_capsule *pill = info->mti_pill;
915 struct mdt_reint_record *rr = &info->mti_rr;
916 struct mdt_rec_setattr *rec;
917 struct lu_nodemap *nodemap =
918 info->mti_exp->exp_target_data.ted_nodemap;
921 CLASSERT(sizeof(struct mdt_rec_setattr)== sizeof(struct mdt_rec_reint));
922 rec = req_capsule_client_get(pill, &RMF_REC_REINT);
926 /* This prior initialization is needed for old_init_ucred_reint() */
927 uc->uc_fsuid = rec->sa_fsuid;
928 uc->uc_fsgid = rec->sa_fsgid;
929 uc->uc_cap = rec->sa_cap;
930 uc->uc_suppgids[0] = rec->sa_suppgid;
931 uc->uc_suppgids[1] = -1;
933 rr->rr_fid1 = &rec->sa_fid;
934 la->la_valid = mdt_attr_valid_xlate(rec->sa_valid, rr, ma);
935 la->la_mode = rec->sa_mode;
936 la->la_flags = rec->sa_attr_flags;
937 la->la_uid = nodemap_map_id(nodemap, NODEMAP_UID,
938 NODEMAP_CLIENT_TO_FS, rec->sa_uid);
939 la->la_gid = nodemap_map_id(nodemap, NODEMAP_GID,
940 NODEMAP_CLIENT_TO_FS, rec->sa_gid);
941 la->la_size = rec->sa_size;
942 la->la_blocks = rec->sa_blocks;
943 la->la_ctime = rec->sa_ctime;
944 la->la_atime = rec->sa_atime;
945 la->la_mtime = rec->sa_mtime;
946 ma->ma_valid = MA_INODE;
948 if (rec->sa_bias & MDS_DATA_MODIFIED)
949 ma->ma_attr_flags |= MDS_DATA_MODIFIED;
951 ma->ma_attr_flags &= ~MDS_DATA_MODIFIED;
953 if (rec->sa_bias & MDS_HSM_RELEASE)
954 ma->ma_attr_flags |= MDS_HSM_RELEASE;
956 ma->ma_attr_flags &= ~MDS_HSM_RELEASE;
958 if (rec->sa_bias & MDS_CLOSE_LAYOUT_SWAP)
959 ma->ma_attr_flags |= MDS_CLOSE_LAYOUT_SWAP;
961 ma->ma_attr_flags &= ~MDS_CLOSE_LAYOUT_SWAP;
966 static int mdt_close_handle_unpack(struct mdt_thread_info *info)
968 struct req_capsule *pill = info->mti_pill;
969 struct mdt_ioepoch *ioepoch;
972 if (req_capsule_get_size(pill, &RMF_MDT_EPOCH, RCL_CLIENT))
973 ioepoch = req_capsule_client_get(pill, &RMF_MDT_EPOCH);
980 info->mti_close_handle = ioepoch->mio_handle;
985 static inline int mdt_dlmreq_unpack(struct mdt_thread_info *info) {
986 struct req_capsule *pill = info->mti_pill;
988 if (req_capsule_get_size(pill, &RMF_DLM_REQ, RCL_CLIENT)) {
989 info->mti_dlm_req = req_capsule_client_get(pill, &RMF_DLM_REQ);
990 if (info->mti_dlm_req == NULL)
997 static int mdt_setattr_unpack(struct mdt_thread_info *info)
999 struct mdt_reint_record *rr = &info->mti_rr;
1000 struct md_attr *ma = &info->mti_attr;
1001 struct req_capsule *pill = info->mti_pill;
1005 rc = mdt_setattr_unpack_rec(info);
1009 if (req_capsule_field_present(pill, &RMF_EADATA, RCL_CLIENT)) {
1010 rr->rr_eadata = req_capsule_client_get(pill, &RMF_EADATA);
1011 rr->rr_eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
1013 if (rr->rr_eadatalen > 0) {
1014 const struct lmv_user_md *lum;
1016 lum = rr->rr_eadata;
1017 /* Sigh ma_valid(from req) does not indicate whether
1018 * it will set LOV/LMV EA, so we have to check magic */
1019 if (le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC) {
1020 ma->ma_valid |= MA_LMV;
1021 ma->ma_lmv = (void *)rr->rr_eadata;
1022 ma->ma_lmv_size = rr->rr_eadatalen;
1024 ma->ma_valid |= MA_LOV;
1025 ma->ma_lmm = (void *)rr->rr_eadata;
1026 ma->ma_lmm_size = rr->rr_eadatalen;
1031 rc = mdt_dlmreq_unpack(info);
1035 static int mdt_intent_close_unpack(struct mdt_thread_info *info)
1037 struct md_attr *ma = &info->mti_attr;
1038 struct req_capsule *pill = info->mti_pill;
1041 if (!(ma->ma_attr_flags & (MDS_HSM_RELEASE | MDS_CLOSE_LAYOUT_SWAP)))
1044 req_capsule_extend(pill, &RQF_MDS_INTENT_CLOSE);
1046 if (!(req_capsule_has_field(pill, &RMF_CLOSE_DATA, RCL_CLIENT) &&
1047 req_capsule_field_present(pill, &RMF_CLOSE_DATA, RCL_CLIENT)))
1053 int mdt_close_unpack(struct mdt_thread_info *info)
1058 rc = mdt_close_handle_unpack(info);
1062 rc = mdt_setattr_unpack_rec(info);
1066 rc = mdt_intent_close_unpack(info);
1070 RETURN(mdt_init_ucred_reint(info));
1073 static int mdt_create_unpack(struct mdt_thread_info *info)
1075 struct lu_ucred *uc = mdt_ucred(info);
1076 struct mdt_rec_create *rec;
1077 struct lu_attr *attr = &info->mti_attr.ma_attr;
1078 struct mdt_reint_record *rr = &info->mti_rr;
1079 struct req_capsule *pill = info->mti_pill;
1080 struct md_op_spec *sp = &info->mti_spec;
1084 CLASSERT(sizeof(struct mdt_rec_create) == sizeof(struct mdt_rec_reint));
1085 rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1089 /* This prior initialization is needed for old_init_ucred_reint() */
1090 uc->uc_fsuid = rec->cr_fsuid;
1091 uc->uc_fsgid = rec->cr_fsgid;
1092 uc->uc_cap = rec->cr_cap;
1093 uc->uc_suppgids[0] = rec->cr_suppgid1;
1094 uc->uc_suppgids[1] = -1;
1095 uc->uc_umask = rec->cr_umask;
1097 rr->rr_fid1 = &rec->cr_fid1;
1098 rr->rr_fid2 = &rec->cr_fid2;
1099 attr->la_mode = rec->cr_mode;
1100 attr->la_rdev = rec->cr_rdev;
1101 attr->la_uid = rec->cr_fsuid;
1102 attr->la_gid = rec->cr_fsgid;
1103 attr->la_ctime = rec->cr_time;
1104 attr->la_mtime = rec->cr_time;
1105 attr->la_atime = rec->cr_time;
1106 attr->la_valid = LA_MODE | LA_RDEV | LA_UID | LA_GID | LA_TYPE |
1107 LA_CTIME | LA_MTIME | LA_ATIME;
1108 memset(&sp->u, 0, sizeof(sp->u));
1109 sp->sp_cr_flags = get_mrc_cr_flags(rec);
1111 rc = mdt_name_unpack(pill, &RMF_NAME, &rr->rr_name, 0);
1115 if (S_ISLNK(attr->la_mode)) {
1116 const char *tgt = NULL;
1118 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_SYM);
1119 if (req_capsule_get_size(pill, &RMF_SYMTGT, RCL_CLIENT)) {
1120 tgt = req_capsule_client_get(pill, &RMF_SYMTGT);
1121 sp->u.sp_symname = tgt;
1126 req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_RMT_ACL);
1127 if (S_ISDIR(attr->la_mode) &&
1128 req_capsule_get_size(pill, &RMF_EADATA, RCL_CLIENT) > 0) {
1129 sp->u.sp_ea.eadata =
1130 req_capsule_client_get(pill, &RMF_EADATA);
1131 sp->u.sp_ea.eadatalen =
1132 req_capsule_get_size(pill, &RMF_EADATA,
1134 sp->sp_cr_flags |= MDS_OPEN_HAS_EA;
1138 rc = mdt_dlmreq_unpack(info);
1142 static int mdt_link_unpack(struct mdt_thread_info *info)
1144 struct lu_ucred *uc = mdt_ucred(info);
1145 struct mdt_rec_link *rec;
1146 struct lu_attr *attr = &info->mti_attr.ma_attr;
1147 struct mdt_reint_record *rr = &info->mti_rr;
1148 struct req_capsule *pill = info->mti_pill;
1152 CLASSERT(sizeof(struct mdt_rec_link) == sizeof(struct mdt_rec_reint));
1153 rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1157 /* This prior initialization is needed for old_init_ucred_reint() */
1158 uc->uc_fsuid = rec->lk_fsuid;
1159 uc->uc_fsgid = rec->lk_fsgid;
1160 uc->uc_cap = rec->lk_cap;
1161 uc->uc_suppgids[0] = rec->lk_suppgid1;
1162 uc->uc_suppgids[1] = rec->lk_suppgid2;
1164 attr->la_uid = rec->lk_fsuid;
1165 attr->la_gid = rec->lk_fsgid;
1166 rr->rr_fid1 = &rec->lk_fid1;
1167 rr->rr_fid2 = &rec->lk_fid2;
1168 attr->la_ctime = rec->lk_time;
1169 attr->la_mtime = rec->lk_time;
1170 attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME;
1172 rc = mdt_name_unpack(pill, &RMF_NAME, &rr->rr_name, 0);
1176 rc = mdt_dlmreq_unpack(info);
1181 static int mdt_unlink_unpack(struct mdt_thread_info *info)
1183 struct lu_ucred *uc = mdt_ucred(info);
1184 struct mdt_rec_unlink *rec;
1185 struct md_attr *ma = &info->mti_attr;
1186 struct lu_attr *attr = &info->mti_attr.ma_attr;
1187 struct mdt_reint_record *rr = &info->mti_rr;
1188 struct req_capsule *pill = info->mti_pill;
1192 CLASSERT(sizeof(struct mdt_rec_unlink) == sizeof(struct mdt_rec_reint));
1193 rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1197 /* This prior initialization is needed for old_init_ucred_reint() */
1198 uc->uc_fsuid = rec->ul_fsuid;
1199 uc->uc_fsgid = rec->ul_fsgid;
1200 uc->uc_cap = rec->ul_cap;
1201 uc->uc_suppgids[0] = rec->ul_suppgid1;
1202 uc->uc_suppgids[1] = -1;
1204 attr->la_uid = rec->ul_fsuid;
1205 attr->la_gid = rec->ul_fsgid;
1206 rr->rr_fid1 = &rec->ul_fid1;
1207 rr->rr_fid2 = &rec->ul_fid2;
1208 attr->la_ctime = rec->ul_time;
1209 attr->la_mtime = rec->ul_time;
1210 attr->la_mode = rec->ul_mode;
1211 attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME | LA_MODE;
1213 rc = mdt_name_unpack(pill, &RMF_NAME, &rr->rr_name, 0);
1217 if (rec->ul_bias & MDS_VTX_BYPASS)
1218 ma->ma_attr_flags |= MDS_VTX_BYPASS;
1220 ma->ma_attr_flags &= ~MDS_VTX_BYPASS;
1222 info->mti_spec.no_create = !!req_is_replay(mdt_info_req(info));
1224 rc = mdt_dlmreq_unpack(info);
1228 static int mdt_rmentry_unpack(struct mdt_thread_info *info)
1230 info->mti_spec.sp_rm_entry = 1;
1231 return mdt_unlink_unpack(info);
1234 static int mdt_rename_unpack(struct mdt_thread_info *info)
1236 struct lu_ucred *uc = mdt_ucred(info);
1237 struct mdt_rec_rename *rec;
1238 struct md_attr *ma = &info->mti_attr;
1239 struct lu_attr *attr = &info->mti_attr.ma_attr;
1240 struct mdt_reint_record *rr = &info->mti_rr;
1241 struct req_capsule *pill = info->mti_pill;
1245 CLASSERT(sizeof(struct mdt_rec_rename) == sizeof(struct mdt_rec_reint));
1246 rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1250 /* This prior initialization is needed for old_init_ucred_reint() */
1251 uc->uc_fsuid = rec->rn_fsuid;
1252 uc->uc_fsgid = rec->rn_fsgid;
1253 uc->uc_cap = rec->rn_cap;
1254 uc->uc_suppgids[0] = rec->rn_suppgid1;
1255 uc->uc_suppgids[1] = rec->rn_suppgid2;
1257 attr->la_uid = rec->rn_fsuid;
1258 attr->la_gid = rec->rn_fsgid;
1259 rr->rr_fid1 = &rec->rn_fid1;
1260 rr->rr_fid2 = &rec->rn_fid2;
1261 attr->la_ctime = rec->rn_time;
1262 attr->la_mtime = rec->rn_time;
1263 /* rename_tgt contains the mode already */
1264 attr->la_mode = rec->rn_mode;
1265 attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME | LA_MODE;
1267 rc = mdt_name_unpack(pill, &RMF_NAME, &rr->rr_name, 0);
1271 rc = mdt_name_unpack(pill, &RMF_SYMTGT, &rr->rr_tgt_name, 0);
1275 if (rec->rn_bias & MDS_VTX_BYPASS)
1276 ma->ma_attr_flags |= MDS_VTX_BYPASS;
1278 ma->ma_attr_flags &= ~MDS_VTX_BYPASS;
1280 if (rec->rn_bias & MDS_RENAME_MIGRATE) {
1281 req_capsule_extend(info->mti_pill, &RQF_MDS_REINT_MIGRATE);
1282 rc = mdt_close_handle_unpack(info);
1285 info->mti_spec.sp_migrate_close = 1;
1288 info->mti_spec.no_create = !!req_is_replay(mdt_info_req(info));
1291 rc = mdt_dlmreq_unpack(info);
1297 * please see comment above LOV_MAGIC_V1_DEF
1299 static void mdt_fix_lov_magic(struct mdt_thread_info *info)
1301 struct mdt_reint_record *rr = &info->mti_rr;
1302 struct lov_user_md_v1 *v1;
1304 v1 = (void *)rr->rr_eadata;
1307 if (unlikely(req_is_replay(mdt_info_req(info)))) {
1308 if (v1->lmm_magic == LOV_USER_MAGIC_V1) {
1309 v1->lmm_magic = LOV_MAGIC_V1_DEF;
1310 } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V1)) {
1311 v1->lmm_magic = __swab32(LOV_MAGIC_V1_DEF);
1312 } else if (v1->lmm_magic == LOV_USER_MAGIC_V3) {
1313 v1->lmm_magic = LOV_MAGIC_V3_DEF;
1314 } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V3)) {
1315 v1->lmm_magic = __swab32(LOV_MAGIC_V3_DEF);
1320 static int mdt_open_unpack(struct mdt_thread_info *info)
1322 struct lu_ucred *uc = mdt_ucred(info);
1323 struct mdt_rec_create *rec;
1324 struct lu_attr *attr = &info->mti_attr.ma_attr;
1325 struct req_capsule *pill = info->mti_pill;
1326 struct mdt_reint_record *rr = &info->mti_rr;
1327 struct ptlrpc_request *req = mdt_info_req(info);
1328 struct md_op_spec *sp = &info->mti_spec;
1331 CLASSERT(sizeof(struct mdt_rec_create) == sizeof(struct mdt_rec_reint));
1332 rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1336 /* This prior initialization is needed for old_init_ucred_reint() */
1337 uc->uc_fsuid = rec->cr_fsuid;
1338 uc->uc_fsgid = rec->cr_fsgid;
1339 uc->uc_cap = rec->cr_cap;
1340 uc->uc_suppgids[0] = rec->cr_suppgid1;
1341 uc->uc_suppgids[1] = rec->cr_suppgid2;
1342 uc->uc_umask = rec->cr_umask;
1344 rr->rr_fid1 = &rec->cr_fid1;
1345 rr->rr_fid2 = &rec->cr_fid2;
1346 rr->rr_handle = &rec->cr_old_handle;
1347 attr->la_mode = rec->cr_mode;
1348 attr->la_rdev = rec->cr_rdev;
1349 attr->la_uid = rec->cr_fsuid;
1350 attr->la_gid = rec->cr_fsgid;
1351 attr->la_ctime = rec->cr_time;
1352 attr->la_mtime = rec->cr_time;
1353 attr->la_atime = rec->cr_time;
1354 attr->la_valid = LA_MODE | LA_RDEV | LA_UID | LA_GID |
1355 LA_CTIME | LA_MTIME | LA_ATIME;
1356 memset(&info->mti_spec.u, 0, sizeof(info->mti_spec.u));
1357 info->mti_spec.sp_cr_flags = get_mrc_cr_flags(rec);
1358 /* Do not trigger ASSERTION if client miss to set such flags. */
1359 if (unlikely(info->mti_spec.sp_cr_flags == 0))
1362 info->mti_cross_ref = !!(rec->cr_bias & MDS_CROSS_REF);
1364 mdt_name_unpack(pill, &RMF_NAME, &rr->rr_name, MNF_FIX_ANON);
1366 if (req_capsule_field_present(pill, &RMF_EADATA, RCL_CLIENT)) {
1367 rr->rr_eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
1369 if (rr->rr_eadatalen > 0) {
1370 rr->rr_eadata = req_capsule_client_get(pill,
1372 sp->u.sp_ea.eadatalen = rr->rr_eadatalen;
1373 sp->u.sp_ea.eadata = rr->rr_eadata;
1374 sp->no_create = !!req_is_replay(req);
1375 mdt_fix_lov_magic(info);
1379 * Client default md_size may be 0 right after client start,
1380 * until all osc are connected, set here just some reasonable
1381 * value to prevent misbehavior.
1383 if (rr->rr_eadatalen == 0 &&
1384 !(info->mti_spec.sp_cr_flags & MDS_OPEN_DELAY_CREATE))
1385 rr->rr_eadatalen = MIN_MD_SIZE;
1391 static int mdt_setxattr_unpack(struct mdt_thread_info *info)
1393 struct mdt_reint_record *rr = &info->mti_rr;
1394 struct lu_ucred *uc = mdt_ucred(info);
1395 struct lu_attr *attr = &info->mti_attr.ma_attr;
1396 struct req_capsule *pill = info->mti_pill;
1397 struct mdt_rec_setxattr *rec;
1402 CLASSERT(sizeof(struct mdt_rec_setxattr) ==
1403 sizeof(struct mdt_rec_reint));
1405 rec = req_capsule_client_get(pill, &RMF_REC_REINT);
1409 /* This prior initialization is needed for old_init_ucred_reint() */
1410 uc->uc_fsuid = rec->sx_fsuid;
1411 uc->uc_fsgid = rec->sx_fsgid;
1412 uc->uc_cap = rec->sx_cap;
1413 uc->uc_suppgids[0] = rec->sx_suppgid1;
1414 uc->uc_suppgids[1] = -1;
1416 rr->rr_opcode = rec->sx_opcode;
1417 rr->rr_fid1 = &rec->sx_fid;
1418 attr->la_valid = rec->sx_valid;
1419 attr->la_ctime = rec->sx_time;
1420 attr->la_size = rec->sx_size;
1421 attr->la_flags = rec->sx_flags;
1423 rc = mdt_name_unpack(pill, &RMF_NAME, &rr->rr_name, 0);
1427 if (req_capsule_field_present(pill, &RMF_EADATA, RCL_CLIENT)) {
1428 rr->rr_eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
1430 if (rr->rr_eadatalen > 0) {
1431 rr->rr_eadata = req_capsule_client_get(pill,
1433 if (rr->rr_eadata == NULL)
1436 rr->rr_eadata = NULL;
1438 } else if (!(attr->la_valid & OBD_MD_FLXATTRRM)) {
1439 CDEBUG(D_INFO, "no xattr data supplied\n");
1443 if (mdt_dlmreq_unpack(info) < 0)
1450 typedef int (*reint_unpacker)(struct mdt_thread_info *info);
1452 static reint_unpacker mdt_reint_unpackers[REINT_MAX] = {
1453 [REINT_SETATTR] = mdt_setattr_unpack,
1454 [REINT_CREATE] = mdt_create_unpack,
1455 [REINT_LINK] = mdt_link_unpack,
1456 [REINT_UNLINK] = mdt_unlink_unpack,
1457 [REINT_RENAME] = mdt_rename_unpack,
1458 [REINT_OPEN] = mdt_open_unpack,
1459 [REINT_SETXATTR] = mdt_setxattr_unpack,
1460 [REINT_RMENTRY] = mdt_rmentry_unpack,
1461 [REINT_MIGRATE] = mdt_rename_unpack,
1464 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op)
1469 memset(&info->mti_rr, 0, sizeof(info->mti_rr));
1470 if (op < REINT_MAX && mdt_reint_unpackers[op] != NULL) {
1471 info->mti_rr.rr_opcode = op;
1472 rc = mdt_reint_unpackers[op](info);
1474 CERROR("Unexpected opcode %d\n", op);