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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
33 #define DEBUG_SUBSYSTEM S_MDC
34 #include <linux/user_namespace.h>
35 #include <linux/uidgid.h>
37 #include <lustre_net.h>
38 #include <obd_class.h>
40 #include <cl_object.h>
41 #include "mdc_internal.h"
43 static void set_mrc_cr_flags(struct mdt_rec_create *mrc, __u64 flags)
45 mrc->cr_flags_l = (__u32)(flags & 0xFFFFFFFFUll);
46 mrc->cr_flags_h = (__u32)(flags >> 32);
49 static void __mdc_pack_body(struct mdt_body *b, __u32 suppgid)
53 b->mbo_suppgid = suppgid;
54 b->mbo_uid = from_kuid(&init_user_ns, current_uid());
55 b->mbo_gid = from_kgid(&init_user_ns, current_gid());
56 b->mbo_fsuid = from_kuid(&init_user_ns, current_fsuid());
57 b->mbo_fsgid = from_kgid(&init_user_ns, current_fsgid());
58 b->mbo_capability = cfs_curproc_cap_pack();
61 void mdc_swap_layouts_pack(struct ptlrpc_request *req,
62 struct md_op_data *op_data)
64 struct mdt_body *b = req_capsule_client_get(&req->rq_pill,
67 __mdc_pack_body(b, op_data->op_suppgids[0]);
68 b->mbo_fid1 = op_data->op_fid1;
69 b->mbo_fid2 = op_data->op_fid2;
70 b->mbo_valid |= OBD_MD_FLID;
73 void mdc_pack_body(struct ptlrpc_request *req, const struct lu_fid *fid,
74 u64 valid, size_t ea_size, u32 suppgid, u32 flags)
76 struct mdt_body *b = req_capsule_client_get(&req->rq_pill,
80 b->mbo_eadatasize = ea_size;
82 __mdc_pack_body(b, suppgid);
85 b->mbo_valid |= OBD_MD_FLID;
90 * Pack a name (path component) into a request
92 * \param[in] req request
93 * \param[in] field request field (usually RMF_NAME)
94 * \param[in] name path component
95 * \param[in] name_len length of path component
97 * \a field must be present in \a req and of size \a name_len + 1.
99 * \a name must be '\0' terminated of length \a name_len and represent
100 * a single path component (not contain '/').
102 static void mdc_pack_name(struct ptlrpc_request *req,
103 const struct req_msg_field *field,
104 const char *name, size_t name_len)
110 buf = req_capsule_client_get(&req->rq_pill, field);
111 buf_size = req_capsule_get_size(&req->rq_pill, field, RCL_CLIENT);
113 LASSERT(name != NULL && name_len != 0 &&
114 buf != NULL && buf_size == name_len + 1);
116 cpy_len = strlcpy(buf, name, buf_size);
118 LASSERT(lu_name_is_valid_2(buf, cpy_len));
119 if (cpy_len != name_len)
120 CDEBUG(D_DENTRY, "%s: %s len %zd != %zd, concurrent rename?\n",
121 req->rq_export->exp_obd->obd_name, buf, name_len,
125 void mdc_file_secctx_pack(struct ptlrpc_request *req, const char *secctx_name,
126 const void *secctx, size_t secctx_size)
131 if (secctx_name == NULL)
134 buf = req_capsule_client_get(&req->rq_pill, &RMF_FILE_SECCTX_NAME);
135 buf_size = req_capsule_get_size(&req->rq_pill, &RMF_FILE_SECCTX_NAME,
138 LASSERT(buf_size == strlen(secctx_name) + 1);
139 memcpy(buf, secctx_name, buf_size);
141 buf = req_capsule_client_get(&req->rq_pill, &RMF_FILE_SECCTX);
142 buf_size = req_capsule_get_size(&req->rq_pill, &RMF_FILE_SECCTX,
145 LASSERT(buf_size == secctx_size);
146 memcpy(buf, secctx, buf_size);
149 void mdc_file_sepol_pack(struct ptlrpc_request *req)
154 if (strlen(req->rq_sepol) == 0)
157 buf = req_capsule_client_get(&req->rq_pill, &RMF_SELINUX_POL);
158 buf_size = req_capsule_get_size(&req->rq_pill, &RMF_SELINUX_POL,
161 LASSERT(buf_size == strlen(req->rq_sepol) + 1);
162 snprintf(buf, strlen(req->rq_sepol) + 1, "%s", req->rq_sepol);
165 void mdc_readdir_pack(struct ptlrpc_request *req, __u64 pgoff, size_t size,
166 const struct lu_fid *fid)
168 struct mdt_body *b = req_capsule_client_get(&req->rq_pill,
171 b->mbo_valid |= OBD_MD_FLID;
172 b->mbo_size = pgoff; /* !! */
173 b->mbo_nlink = size; /* !! */
174 __mdc_pack_body(b, -1);
175 b->mbo_mode = LUDA_FID | LUDA_TYPE;
178 /* packing of MDS records */
179 void mdc_create_pack(struct ptlrpc_request *req, struct md_op_data *op_data,
180 const void *data, size_t datalen, umode_t mode,
181 uid_t uid, gid_t gid, cfs_cap_t cap_effective, __u64 rdev)
183 struct mdt_rec_create *rec;
187 BUILD_BUG_ON(sizeof(struct mdt_rec_reint) !=
188 sizeof(struct mdt_rec_create));
189 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
191 rec->cr_opcode = REINT_CREATE;
194 rec->cr_cap = cap_effective;
195 rec->cr_fid1 = op_data->op_fid1;
196 rec->cr_fid2 = op_data->op_fid2;
199 rec->cr_time = op_data->op_mod_time;
200 rec->cr_suppgid1 = op_data->op_suppgids[0];
201 rec->cr_suppgid2 = op_data->op_suppgids[1];
203 if (op_data->op_bias & MDS_CREATE_VOLATILE)
204 flags |= MDS_OPEN_VOLATILE;
205 set_mrc_cr_flags(rec, flags);
206 rec->cr_bias = op_data->op_bias;
207 rec->cr_umask = current_umask();
209 mdc_pack_name(req, &RMF_NAME, op_data->op_name, op_data->op_namelen);
211 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
212 memcpy(tmp, data, datalen);
215 mdc_file_secctx_pack(req, op_data->op_file_secctx_name,
216 op_data->op_file_secctx,
217 op_data->op_file_secctx_size);
219 /* pack SELinux policy info if any */
220 mdc_file_sepol_pack(req);
223 static inline __u64 mds_pack_open_flags(__u64 flags)
225 __u64 cr_flags = (flags & MDS_OPEN_FL_INTERNAL);
227 if (flags & FMODE_READ)
228 cr_flags |= MDS_FMODE_READ;
229 if (flags & FMODE_WRITE)
230 cr_flags |= MDS_FMODE_WRITE;
232 cr_flags |= MDS_OPEN_CREAT;
234 cr_flags |= MDS_OPEN_EXCL;
236 cr_flags |= MDS_OPEN_TRUNC;
237 if (flags & O_APPEND)
238 cr_flags |= MDS_OPEN_APPEND;
240 cr_flags |= MDS_OPEN_SYNC;
241 if (flags & O_DIRECTORY)
242 cr_flags |= MDS_OPEN_DIRECTORY;
244 if (flags & FMODE_EXEC)
245 cr_flags |= MDS_FMODE_EXEC;
247 if (cl_is_lov_delay_create(flags))
248 cr_flags |= MDS_OPEN_DELAY_CREATE;
250 if (flags & O_NONBLOCK)
251 cr_flags |= MDS_OPEN_NORESTORE;
256 /* packing of MDS records */
257 void mdc_open_pack(struct ptlrpc_request *req, struct md_op_data *op_data,
258 umode_t mode, __u64 rdev, __u64 flags, const void *lmm,
261 struct mdt_rec_create *rec;
265 BUILD_BUG_ON(sizeof(struct mdt_rec_reint) !=
266 sizeof(struct mdt_rec_create));
267 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
269 /* XXX do something about time, uid, gid */
270 rec->cr_opcode = REINT_OPEN;
271 rec->cr_fsuid = from_kuid(&init_user_ns, current_fsuid());
272 rec->cr_fsgid = from_kgid(&init_user_ns, current_fsgid());
273 rec->cr_cap = cfs_curproc_cap_pack();
275 cr_flags = mds_pack_open_flags(flags);
277 rec->cr_umask = current_umask();
278 if (op_data != NULL) {
279 rec->cr_fid1 = op_data->op_fid1;
280 rec->cr_fid2 = op_data->op_fid2;
281 rec->cr_time = op_data->op_mod_time;
282 rec->cr_suppgid1 = op_data->op_suppgids[0];
283 rec->cr_suppgid2 = op_data->op_suppgids[1];
284 rec->cr_bias = op_data->op_bias;
285 rec->cr_open_handle_old = op_data->op_open_handle;
287 if (op_data->op_name) {
288 mdc_pack_name(req, &RMF_NAME, op_data->op_name,
289 op_data->op_namelen);
291 if (op_data->op_bias & MDS_CREATE_VOLATILE)
292 cr_flags |= MDS_OPEN_VOLATILE;
295 mdc_file_secctx_pack(req, op_data->op_file_secctx_name,
296 op_data->op_file_secctx,
297 op_data->op_file_secctx_size);
299 /* pack SELinux policy info if any */
300 mdc_file_sepol_pack(req);
304 cr_flags |= MDS_OPEN_HAS_EA;
305 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
306 memcpy(tmp, lmm, lmmlen);
307 if (cr_flags & MDS_OPEN_PCC) {
308 LASSERT(op_data != NULL);
309 rec->cr_archive_id = op_data->op_archive_id;
312 set_mrc_cr_flags(rec, cr_flags);
315 static inline u64 attr_pack(unsigned int ia_valid, enum op_xvalid ia_xvalid)
319 if (ia_valid & ATTR_MODE)
320 sa_valid |= MDS_ATTR_MODE;
321 if (ia_valid & ATTR_UID)
322 sa_valid |= MDS_ATTR_UID;
323 if (ia_valid & ATTR_GID)
324 sa_valid |= MDS_ATTR_GID;
325 if (ia_valid & ATTR_SIZE)
326 sa_valid |= MDS_ATTR_SIZE;
327 if (ia_valid & ATTR_ATIME)
328 sa_valid |= MDS_ATTR_ATIME;
329 if (ia_valid & ATTR_MTIME)
330 sa_valid |= MDS_ATTR_MTIME;
331 if (ia_valid & ATTR_CTIME)
332 sa_valid |= MDS_ATTR_CTIME;
333 if (ia_valid & ATTR_ATIME_SET)
334 sa_valid |= MDS_ATTR_ATIME_SET;
335 if (ia_valid & ATTR_MTIME_SET)
336 sa_valid |= MDS_ATTR_MTIME_SET;
337 if (ia_valid & ATTR_FORCE)
338 sa_valid |= MDS_ATTR_FORCE;
339 if (ia_xvalid & OP_XVALID_FLAGS)
340 sa_valid |= MDS_ATTR_ATTR_FLAG;
341 if (ia_valid & ATTR_KILL_SUID)
342 sa_valid |= MDS_ATTR_KILL_SUID;
343 if (ia_valid & ATTR_KILL_SGID)
344 sa_valid |= MDS_ATTR_KILL_SGID;
345 if (ia_xvalid & OP_XVALID_CTIME_SET)
346 sa_valid |= MDS_ATTR_CTIME_SET;
347 if (ia_valid & ATTR_OPEN)
348 sa_valid |= MDS_ATTR_FROM_OPEN;
349 if (ia_xvalid & OP_XVALID_BLOCKS)
350 sa_valid |= MDS_ATTR_BLOCKS;
351 if (ia_xvalid & OP_XVALID_OWNEROVERRIDE)
352 /* NFSD hack (see bug 5781) */
353 sa_valid |= MDS_OPEN_OWNEROVERRIDE;
354 if (ia_xvalid & OP_XVALID_PROJID)
355 sa_valid |= MDS_ATTR_PROJID;
356 if (ia_xvalid & OP_XVALID_LAZYSIZE)
357 sa_valid |= MDS_ATTR_LSIZE;
358 if (ia_xvalid & OP_XVALID_LAZYBLOCKS)
359 sa_valid |= MDS_ATTR_LBLOCKS;
363 static void mdc_setattr_pack_rec(struct mdt_rec_setattr *rec,
364 struct md_op_data *op_data)
366 rec->sa_opcode = REINT_SETATTR;
367 rec->sa_fsuid = from_kuid(&init_user_ns, current_fsuid());
368 rec->sa_fsgid = from_kgid(&init_user_ns, current_fsgid());
369 rec->sa_cap = cfs_curproc_cap_pack();
370 rec->sa_suppgid = -1;
372 rec->sa_fid = op_data->op_fid1;
373 rec->sa_valid = attr_pack(op_data->op_attr.ia_valid,
375 rec->sa_mode = op_data->op_attr.ia_mode;
376 rec->sa_uid = from_kuid(&init_user_ns, op_data->op_attr.ia_uid);
377 rec->sa_gid = from_kgid(&init_user_ns, op_data->op_attr.ia_gid);
378 rec->sa_projid = op_data->op_projid;
379 rec->sa_size = op_data->op_attr.ia_size;
380 rec->sa_blocks = op_data->op_attr_blocks;
381 rec->sa_atime = op_data->op_attr.ia_atime.tv_sec;
382 rec->sa_mtime = op_data->op_attr.ia_mtime.tv_sec;
383 rec->sa_ctime = op_data->op_attr.ia_ctime.tv_sec;
384 rec->sa_attr_flags = op_data->op_attr_flags;
385 if ((op_data->op_attr.ia_valid & ATTR_GID) &&
386 in_group_p(op_data->op_attr.ia_gid))
388 from_kgid(&init_user_ns, op_data->op_attr.ia_gid);
390 rec->sa_suppgid = op_data->op_suppgids[0];
392 rec->sa_bias = op_data->op_bias;
395 static void mdc_ioepoch_pack(struct mdt_ioepoch *epoch,
396 struct md_op_data *op_data)
398 epoch->mio_open_handle = op_data->op_open_handle;
399 epoch->mio_unused1 = 0;
400 epoch->mio_unused2 = 0;
401 epoch->mio_padding = 0;
404 void mdc_setattr_pack(struct ptlrpc_request *req, struct md_op_data *op_data,
405 void *ea, size_t ealen)
407 struct mdt_rec_setattr *rec;
408 struct lov_user_md *lum = NULL;
410 BUILD_BUG_ON(sizeof(struct mdt_rec_reint) !=
411 sizeof(struct mdt_rec_setattr));
412 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
413 mdc_setattr_pack_rec(rec, op_data);
418 lum = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
419 if (ea == NULL) { /* Remove LOV EA */
420 lum->lmm_magic = cpu_to_le32(LOV_USER_MAGIC_V1);
421 lum->lmm_stripe_size = 0;
422 lum->lmm_stripe_count = 0;
423 lum->lmm_stripe_offset =
424 (typeof(lum->lmm_stripe_offset))LOV_OFFSET_DEFAULT;
426 memcpy(lum, ea, ealen);
430 void mdc_unlink_pack(struct ptlrpc_request *req, struct md_op_data *op_data)
432 struct mdt_rec_unlink *rec;
434 BUILD_BUG_ON(sizeof(struct mdt_rec_reint) !=
435 sizeof(struct mdt_rec_unlink));
436 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
437 LASSERT(rec != NULL);
439 rec->ul_opcode = op_data->op_cli_flags & CLI_RM_ENTRY ?
440 REINT_RMENTRY : REINT_UNLINK;
441 rec->ul_fsuid = op_data->op_fsuid;
442 rec->ul_fsgid = op_data->op_fsgid;
443 rec->ul_cap = op_data->op_cap;
444 rec->ul_mode = op_data->op_mode;
445 rec->ul_suppgid1 = op_data->op_suppgids[0];
446 rec->ul_suppgid2 = -1;
447 rec->ul_fid1 = op_data->op_fid1;
448 rec->ul_fid2 = op_data->op_fid2;
449 rec->ul_time = op_data->op_mod_time;
450 rec->ul_bias = op_data->op_bias;
452 mdc_pack_name(req, &RMF_NAME, op_data->op_name, op_data->op_namelen);
454 /* pack SELinux policy info if any */
455 mdc_file_sepol_pack(req);
458 void mdc_link_pack(struct ptlrpc_request *req, struct md_op_data *op_data)
460 struct mdt_rec_link *rec;
462 BUILD_BUG_ON(sizeof(struct mdt_rec_reint) !=
463 sizeof(struct mdt_rec_link));
464 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
465 LASSERT(rec != NULL);
467 rec->lk_opcode = REINT_LINK;
468 rec->lk_fsuid = op_data->op_fsuid; /* current->fsuid; */
469 rec->lk_fsgid = op_data->op_fsgid; /* current->fsgid; */
470 rec->lk_cap = op_data->op_cap; /* current->cap_effective; */
471 rec->lk_suppgid1 = op_data->op_suppgids[0];
472 rec->lk_suppgid2 = op_data->op_suppgids[1];
473 rec->lk_fid1 = op_data->op_fid1;
474 rec->lk_fid2 = op_data->op_fid2;
475 rec->lk_time = op_data->op_mod_time;
476 rec->lk_bias = op_data->op_bias;
478 mdc_pack_name(req, &RMF_NAME, op_data->op_name, op_data->op_namelen);
480 /* pack SELinux policy info if any */
481 mdc_file_sepol_pack(req);
484 static void mdc_close_intent_pack(struct ptlrpc_request *req,
485 struct md_op_data *op_data)
487 struct close_data *data;
488 struct ldlm_lock *lock;
489 enum mds_op_bias bias = op_data->op_bias;
491 if (!(bias & (MDS_CLOSE_INTENT | MDS_CLOSE_MIGRATE)))
494 data = req_capsule_client_get(&req->rq_pill, &RMF_CLOSE_DATA);
495 LASSERT(data != NULL);
497 lock = ldlm_handle2lock(&op_data->op_lease_handle);
499 data->cd_handle = lock->l_remote_handle;
502 ldlm_cli_cancel(&op_data->op_lease_handle, LCF_LOCAL);
504 data->cd_data_version = op_data->op_data_version;
505 data->cd_fid = op_data->op_fid2;
507 if (bias & MDS_CLOSE_LAYOUT_SPLIT) {
508 data->cd_mirror_id = op_data->op_mirror_id;
509 } else if (bias & MDS_CLOSE_RESYNC_DONE) {
510 struct close_data_resync_done *sync = &data->cd_resync;
512 BUILD_BUG_ON(sizeof(data->cd_resync) >
513 sizeof(data->cd_reserved));
514 sync->resync_count = op_data->op_data_size / sizeof(__u32);
515 if (sync->resync_count <= INLINE_RESYNC_ARRAY_SIZE) {
516 memcpy(sync->resync_ids_inline, op_data->op_data,
517 op_data->op_data_size);
519 size_t count = sync->resync_count;
521 memcpy(req_capsule_client_get(&req->rq_pill, &RMF_U32),
522 op_data->op_data, count * sizeof(__u32));
524 } else if (bias & MDS_PCC_ATTACH) {
525 data->cd_archive_id = op_data->op_archive_id;
529 void mdc_rename_pack(struct ptlrpc_request *req, struct md_op_data *op_data,
530 const char *old, size_t oldlen,
531 const char *new, size_t newlen)
533 struct mdt_rec_rename *rec;
535 BUILD_BUG_ON(sizeof(struct mdt_rec_reint) !=
536 sizeof(struct mdt_rec_rename));
537 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
539 /* XXX do something about time, uid, gid */
540 rec->rn_opcode = REINT_RENAME;
541 rec->rn_fsuid = op_data->op_fsuid;
542 rec->rn_fsgid = op_data->op_fsgid;
543 rec->rn_cap = op_data->op_cap;
544 rec->rn_suppgid1 = op_data->op_suppgids[0];
545 rec->rn_suppgid2 = op_data->op_suppgids[1];
546 rec->rn_fid1 = op_data->op_fid1;
547 rec->rn_fid2 = op_data->op_fid2;
548 rec->rn_time = op_data->op_mod_time;
549 rec->rn_mode = op_data->op_mode;
550 rec->rn_bias = op_data->op_bias;
552 mdc_pack_name(req, &RMF_NAME, old, oldlen);
555 mdc_pack_name(req, &RMF_SYMTGT, new, newlen);
557 /* pack SELinux policy info if any */
558 mdc_file_sepol_pack(req);
561 void mdc_migrate_pack(struct ptlrpc_request *req, struct md_op_data *op_data,
562 const char *name, size_t namelen)
564 struct mdt_rec_rename *rec;
567 BUILD_BUG_ON(sizeof(struct mdt_rec_reint) !=
568 sizeof(struct mdt_rec_rename));
569 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
571 rec->rn_opcode = REINT_MIGRATE;
572 rec->rn_fsuid = op_data->op_fsuid;
573 rec->rn_fsgid = op_data->op_fsgid;
574 rec->rn_cap = op_data->op_cap;
575 rec->rn_suppgid1 = op_data->op_suppgids[0];
576 rec->rn_suppgid2 = op_data->op_suppgids[1];
577 rec->rn_fid1 = op_data->op_fid1;
578 rec->rn_fid2 = op_data->op_fid4;
579 rec->rn_time = op_data->op_mod_time;
580 rec->rn_mode = op_data->op_mode;
581 rec->rn_bias = op_data->op_bias;
583 mdc_pack_name(req, &RMF_NAME, name, namelen);
585 if (op_data->op_bias & MDS_CLOSE_MIGRATE) {
586 struct mdt_ioepoch *epoch;
588 mdc_close_intent_pack(req, op_data);
589 epoch = req_capsule_client_get(&req->rq_pill, &RMF_MDT_EPOCH);
590 mdc_ioepoch_pack(epoch, op_data);
593 ea = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
594 memcpy(ea, op_data->op_data, op_data->op_data_size);
597 void mdc_getattr_pack(struct ptlrpc_request *req, __u64 valid, __u32 flags,
598 struct md_op_data *op_data, size_t ea_size)
600 struct mdt_body *b = req_capsule_client_get(&req->rq_pill,
603 b->mbo_valid = valid;
604 if (op_data->op_bias & MDS_CROSS_REF)
605 b->mbo_valid |= OBD_MD_FLCROSSREF;
606 b->mbo_eadatasize = ea_size;
607 b->mbo_flags = flags;
608 __mdc_pack_body(b, op_data->op_suppgids[0]);
610 b->mbo_fid1 = op_data->op_fid1;
611 b->mbo_fid2 = op_data->op_fid2;
612 b->mbo_valid |= OBD_MD_FLID;
614 if (op_data->op_name != NULL)
615 mdc_pack_name(req, &RMF_NAME, op_data->op_name,
616 op_data->op_namelen);
619 void mdc_close_pack(struct ptlrpc_request *req, struct md_op_data *op_data)
621 struct mdt_ioepoch *epoch;
622 struct mdt_rec_setattr *rec;
624 epoch = req_capsule_client_get(&req->rq_pill, &RMF_MDT_EPOCH);
625 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
627 mdc_setattr_pack_rec(rec, op_data);
629 * The client will zero out local timestamps when losing the IBITS lock
630 * so any new RPC timestamps will update the client inode's timestamps.
631 * There was a defect on the server side which allowed the atime to be
632 * overwritten by a zeroed-out atime packed into the close RPC.
634 * Proactively clear the MDS_ATTR_ATIME flag in the RPC in this case
635 * to avoid zeroing the atime on old unpatched servers. See LU-8041.
637 if (rec->sa_atime == 0)
638 rec->sa_valid &= ~MDS_ATTR_ATIME;
640 mdc_ioepoch_pack(epoch, op_data);
641 mdc_close_intent_pack(req, op_data);