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) 2007, 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/
31 * lustre/mdt/mdt_open.c
33 * Lustre Metadata Target (mdt) open/close file handling
35 * Author: Huang Hua <huanghua@clusterfs.com>
38 #define DEBUG_SUBSYSTEM S_MDS
40 #include <lustre_acl.h>
41 #include <lustre_mds.h>
42 #include <lustre_swab.h>
43 #include "mdt_internal.h"
44 #include <lustre_nodemap.h>
46 static const char mfd_open_handle_owner[] = "mdt";
48 static int mdt_open_by_fid(struct mdt_thread_info *info, struct ldlm_reply *rep,
49 struct mdt_lock_handle *lhc);
51 /* Create a new mdt_file_data struct, initialize it,
52 * and insert it to global hash table */
53 struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med)
55 struct mdt_file_data *mfd;
60 refcount_set(&mfd->mfd_open_handle.h_ref, 1);
61 INIT_HLIST_NODE(&mfd->mfd_open_handle.h_link);
63 INIT_LIST_HEAD(&mfd->mfd_list);
64 class_handle_hash(&mfd->mfd_open_handle, mfd_open_handle_owner);
71 * Find the mfd pointed to by handle in global hash table.
72 * In case of replay the handle is obsoleted
73 * but mfd can be found in mfd list by that handle.
74 * Callers need to be holding med_open_lock.
76 struct mdt_file_data *mdt_open_handle2mfd(struct mdt_export_data *med,
77 const struct lustre_handle *open_handle,
78 bool is_replay_or_resent)
80 struct mdt_file_data *mfd;
83 LASSERT(open_handle != NULL);
84 mfd = class_handle2object(open_handle->cookie, mfd_open_handle_owner);
86 refcount_dec(&mfd->mfd_open_handle.h_ref);
88 /* during dw/setattr replay the mfd can be found by old handle */
89 if ((!mfd || mfd->mfd_owner != med) && is_replay_or_resent) {
90 list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
91 if (mfd->mfd_open_handle_old.cookie ==
102 void mdt_mfd_free(struct mdt_file_data *mfd)
104 LASSERT(refcount_read(&mfd->mfd_open_handle.h_ref) == 1);
105 LASSERT(list_empty(&mfd->mfd_list));
106 OBD_FREE_PRE(mfd, sizeof(*mfd), "kfree_rcu");
107 kfree_rcu(mfd, mfd_open_handle.h_rcu);
110 static int mdt_create_data(struct mdt_thread_info *info,
111 struct mdt_object *p, struct mdt_object *o)
113 struct md_op_spec *spec = &info->mti_spec;
114 struct md_attr *ma = &info->mti_attr;
118 if (!md_should_create(spec->sp_cr_flags))
121 ma->ma_need = MA_INODE | MA_LOV;
123 mutex_lock(&o->mot_lov_mutex);
124 if (!o->mot_lov_created) {
125 rc = mdo_create_data(info->mti_env,
126 p ? mdt_object_child(p) : NULL,
127 mdt_object_child(o), spec, ma);
129 rc = mdt_attr_get_complex(info, o, ma);
131 if (rc == 0 && ma->ma_valid & MA_LOV)
132 o->mot_lov_created = 1;
135 mutex_unlock(&o->mot_lov_mutex);
139 int mdt_write_read(struct mdt_object *o)
144 spin_lock(&o->mot_write_lock);
145 rc = o->mot_write_count;
146 spin_unlock(&o->mot_write_lock);
150 int mdt_write_get(struct mdt_object *o)
155 spin_lock(&o->mot_write_lock);
156 if (o->mot_write_count < 0)
159 o->mot_write_count++;
160 spin_unlock(&o->mot_write_lock);
165 void mdt_write_put(struct mdt_object *o)
168 spin_lock(&o->mot_write_lock);
169 o->mot_write_count--;
170 spin_unlock(&o->mot_write_lock);
174 static int mdt_write_deny(struct mdt_object *o)
179 spin_lock(&o->mot_write_lock);
180 if (o->mot_write_count > 0)
183 o->mot_write_count--;
184 spin_unlock(&o->mot_write_lock);
188 static void mdt_write_allow(struct mdt_object *o)
191 spin_lock(&o->mot_write_lock);
192 o->mot_write_count++;
193 spin_unlock(&o->mot_write_lock);
197 /* there can be no real transaction so prepare the fake one */
198 static void mdt_empty_transno(struct mdt_thread_info *info, int rc)
200 struct mdt_device *mdt = info->mti_mdt;
201 struct ptlrpc_request *req = mdt_info_req(info);
202 struct tg_export_data *ted;
203 struct lsd_client_data *lcd;
206 if (mdt_rdonly(req->rq_export))
209 /* transaction has occurred already */
210 if (lustre_msg_get_transno(req->rq_repmsg) != 0)
213 if (tgt_is_multimodrpcs_client(req->rq_export)) {
216 /* generate an empty transaction to get a transno
218 th = dt_trans_create(info->mti_env, mdt->mdt_bottom);
220 rc = dt_trans_start(info->mti_env, mdt->mdt_bottom, th);
221 dt_trans_stop(info->mti_env, mdt->mdt_bottom, th);
226 spin_lock(&mdt->mdt_lut.lut_translock);
228 if (info->mti_transno != 0) {
229 struct obd_export *exp = req->rq_export;
231 CERROR("%s: replay trans %llu NID %s: rc = %d\n",
232 mdt_obd_name(mdt), info->mti_transno,
233 obd_export_nid2str(exp), rc);
234 spin_unlock(&mdt->mdt_lut.lut_translock);
237 } else if (info->mti_transno == 0) {
238 info->mti_transno = ++mdt->mdt_lut.lut_last_transno;
240 /* should be replay */
241 if (info->mti_transno > mdt->mdt_lut.lut_last_transno)
242 mdt->mdt_lut.lut_last_transno = info->mti_transno;
244 spin_unlock(&mdt->mdt_lut.lut_translock);
246 CDEBUG(D_INODE, "transno = %llu, last_committed = %llu\n",
248 req->rq_export->exp_obd->obd_last_committed);
250 req->rq_transno = info->mti_transno;
251 lustre_msg_set_transno(req->rq_repmsg, info->mti_transno);
253 /* update lcd in memory only for resent cases */
254 ted = &req->rq_export->exp_target_data;
256 mutex_lock(&ted->ted_lcd_lock);
258 if (info->mti_transno < lcd->lcd_last_transno &&
259 info->mti_transno != 0) {
260 /* This should happen during replay. Do not update
261 * last rcvd info if replay req transno < last transno,
262 * otherwise the following resend(after replay) can not
263 * be checked correctly by xid */
264 mutex_unlock(&ted->ted_lcd_lock);
265 CDEBUG(D_HA, "%s: transno = %llu < last_transno = %llu\n",
266 mdt_obd_name(mdt), info->mti_transno,
267 lcd->lcd_last_transno);
271 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE) {
272 if (info->mti_transno != 0)
273 lcd->lcd_last_close_transno = info->mti_transno;
274 lcd->lcd_last_close_xid = req->rq_xid;
275 lcd->lcd_last_close_result = rc;
277 /* VBR: save versions in last_rcvd for reconstruct. */
278 __u64 *pre_versions = lustre_msg_get_versions(req->rq_repmsg);
281 lcd->lcd_pre_versions[0] = pre_versions[0];
282 lcd->lcd_pre_versions[1] = pre_versions[1];
283 lcd->lcd_pre_versions[2] = pre_versions[2];
284 lcd->lcd_pre_versions[3] = pre_versions[3];
286 if (info->mti_transno != 0)
287 lcd->lcd_last_transno = info->mti_transno;
289 lcd->lcd_last_xid = req->rq_xid;
290 lcd->lcd_last_result = rc;
291 lcd->lcd_last_data = info->mti_opdata;
293 mutex_unlock(&ted->ted_lcd_lock);
298 void mdt_mfd_set_mode(struct mdt_file_data *mfd, u64 open_flags)
300 LASSERT(mfd != NULL);
302 CDEBUG(D_DENTRY, DFID " Change mfd open_flags %#llo -> %#llo.\n",
303 PFID(mdt_object_fid(mfd->mfd_object)), mfd->mfd_open_flags,
306 mfd->mfd_open_flags = open_flags;
310 * prep ma_lmm/ma_lmv for md_attr from reply
312 static void mdt_prep_ma_buf_from_rep(struct mdt_thread_info *info,
313 struct mdt_object *obj,
314 struct md_attr *ma, __u64 open_flags)
316 struct req_capsule *pill;
318 if (ma->ma_lmv || ma->ma_lmm) {
319 CDEBUG(D_INFO, DFID " %s already set.\n",
320 PFID(mdt_object_fid(obj)),
321 ma->ma_lmv ? (ma->ma_lmm ? "ma_lmv and ma_lmm"
327 pill = info->mti_pill;
328 if (S_ISDIR(obj->mot_header.loh_attr)) {
329 ma->ma_lmv = req_capsule_server_get(pill, &RMF_MDT_MD);
330 ma->ma_lmv_size = req_capsule_get_size(pill, &RMF_MDT_MD,
332 if (ma->ma_lmv_size > 0)
333 ma->ma_need |= MA_LMV;
335 if (open_flags & MDS_OPEN_DEFAULT_LMV) {
336 ma->ma_default_lmv = req_capsule_server_get(pill,
337 &RMF_DEFAULT_MDT_MD);
338 ma->ma_default_lmv_size = req_capsule_get_size(pill,
341 if (ma->ma_default_lmv_size > 0)
342 ma->ma_need |= MA_LMV_DEF;
345 ma->ma_lmm = req_capsule_server_get(pill, &RMF_MDT_MD);
346 ma->ma_lmm_size = req_capsule_get_size(pill, &RMF_MDT_MD,
348 if (ma->ma_lmm_size > 0)
349 ma->ma_need |= MA_LOV;
353 static int mdt_mfd_open(struct mdt_thread_info *info, struct mdt_object *p,
354 struct mdt_object *o, u64 open_flags, int created,
355 struct ldlm_reply *rep)
357 struct ptlrpc_request *req = mdt_info_req(info);
358 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
359 struct mdt_file_data *mfd;
360 struct md_attr *ma = &info->mti_attr;
361 struct lu_attr *la = &ma->ma_attr;
362 struct mdt_body *repbody;
367 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
369 isreg = S_ISREG(la->la_mode);
370 isdir = S_ISDIR(la->la_mode);
371 if (isreg && !(ma->ma_valid & MA_LOV) &&
372 !(open_flags & MDS_OPEN_RELEASE)) {
374 * No EA, check whether it is will set regEA and dirEA since in
375 * above attr get, these size might be zero, so reset it, to
376 * retrieve the MD after create obj.
378 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
381 /* in replay case, p == NULL */
382 rc = mdt_create_data(info, p, o);
386 if (exp_connect_flags(req->rq_export) & OBD_CONNECT_DISP_STRIPE)
387 mdt_set_disposition(info, rep, DISP_OPEN_STRIPE);
390 CDEBUG(D_INODE, "after open, ma_valid bit = %#llx lmm_size = %d\n",
391 ma->ma_valid, ma->ma_lmm_size);
393 if (ma->ma_valid & MA_LOV) {
394 LASSERT(ma->ma_lmm_size != 0);
395 repbody->mbo_eadatasize = ma->ma_lmm_size;
397 repbody->mbo_valid |= OBD_MD_FLDIREA;
399 repbody->mbo_valid |= OBD_MD_FLEASIZE;
402 if (ma->ma_valid & MA_LMV) {
403 LASSERT(ma->ma_lmv_size != 0);
404 repbody->mbo_eadatasize = ma->ma_lmv_size;
406 repbody->mbo_valid |= OBD_MD_FLDIREA | OBD_MD_MEA;
409 if (ma->ma_valid & MA_LMV_DEF) {
410 LASSERT(ma->ma_default_lmv_size != 0);
412 repbody->mbo_valid |= OBD_MD_FLDIREA | OBD_MD_DEFAULT_MEA;
415 if (open_flags & MDS_FMODE_WRITE)
416 rc = mdt_write_get(o);
417 else if (open_flags & MDS_FMODE_EXEC)
418 rc = mdt_write_deny(o);
423 rc = mo_open(info->mti_env, mdt_object_child(o),
424 created ? open_flags | MDS_OPEN_CREATED : open_flags,
427 /* If we allow the client to chgrp (CFS_SETGRP_PERM), but the
428 * client does not know which suppgid should be sent to the MDS,
429 * or some other(s) changed the target file's GID after this RPC
430 * sent to the MDS with the suppgid as the original GID, then we
431 * give the client another chance to send the right suppgid. */
433 allow_client_chgrp(info, lu_ucred(info->mti_env)))
434 mdt_set_disposition(info, rep, DISP_OPEN_DENY);
439 mfd = mdt_mfd_new(med);
441 GOTO(err_out, rc = -ENOMEM);
444 * Keep a reference on this object for this open, and is
445 * released by mdt_mfd_close().
447 mdt_object_get(info->mti_env, o);
449 mfd->mfd_xid = req->rq_xid;
452 * @open_flags is always not zero. At least it should be FMODE_READ,
453 * FMODE_WRITE or MDS_FMODE_EXEC.
455 LASSERT(open_flags != 0);
458 mdt_mfd_set_mode(mfd, open_flags);
460 atomic_inc(&o->mot_open_count);
461 if (open_flags & MDS_OPEN_LEASE)
462 atomic_inc(&o->mot_lease_count);
465 if (req_is_replay(req)) {
466 struct mdt_file_data *old_mfd;
467 /* Check wheather old cookie already exist in
468 * the list, becasue when do recovery, client
469 * might be disconnected from server, and
470 * restart replay, so there maybe some orphan
471 * mfd here, we should remove them */
472 LASSERT(info->mti_rr.rr_open_handle != NULL);
473 spin_lock(&med->med_open_lock);
474 old_mfd = mdt_open_handle2mfd(med, info->mti_rr.rr_open_handle,
476 if (old_mfd != NULL) {
477 CDEBUG(D_HA, "delete orphan mfd = %p, fid = "DFID", "
478 "cookie = %#llx\n", mfd,
479 PFID(mdt_object_fid(mfd->mfd_object)),
480 info->mti_rr.rr_open_handle->cookie);
481 class_handle_unhash(&old_mfd->mfd_open_handle);
482 list_del_init(&old_mfd->mfd_list);
483 spin_unlock(&med->med_open_lock);
484 /* no attr update for that close */
486 ma->ma_valid |= MA_FLAGS;
487 ma->ma_attr_flags |= MDS_RECOV_OPEN;
488 mdt_mfd_close(info, old_mfd);
489 ma->ma_attr_flags &= ~MDS_RECOV_OPEN;
490 ma->ma_valid &= ~MA_FLAGS;
492 spin_unlock(&med->med_open_lock);
493 CDEBUG(D_HA, "orphan mfd not found, fid = "DFID", "
495 PFID(mdt_object_fid(mfd->mfd_object)),
496 info->mti_rr.rr_open_handle->cookie);
499 CDEBUG(D_HA, "Store old cookie %#llx in new mfd\n",
500 info->mti_rr.rr_open_handle->cookie);
502 mfd->mfd_open_handle_old = *info->mti_rr.rr_open_handle;
505 repbody->mbo_open_handle.cookie = mfd->mfd_open_handle.h_cookie;
507 if (req->rq_export->exp_disconnected) {
508 spin_lock(&med->med_open_lock);
509 class_handle_unhash(&mfd->mfd_open_handle);
510 list_del_init(&mfd->mfd_list);
511 spin_unlock(&med->med_open_lock);
512 mdt_mfd_close(info, mfd);
514 spin_lock(&med->med_open_lock);
515 list_add_tail(&mfd->mfd_list, &med->med_open_head);
516 spin_unlock(&med->med_open_lock);
519 mdt_empty_transno(info, rc);
524 if (open_flags & MDS_FMODE_WRITE)
526 else if (open_flags & MDS_FMODE_EXEC)
532 static int mdt_finish_open(struct mdt_thread_info *info,
533 struct mdt_object *p, struct mdt_object *o,
535 struct ldlm_reply *rep)
537 struct ptlrpc_request *req = mdt_info_req(info);
538 struct obd_export *exp = req->rq_export;
539 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
540 struct md_attr *ma = &info->mti_attr;
541 struct lu_attr *la = &ma->ma_attr;
542 struct mdt_file_data *mfd;
543 struct mdt_body *repbody;
546 int isreg, isdir, islnk;
550 LASSERT(ma->ma_valid & MA_INODE);
551 created = mdt_get_disposition(rep, DISP_OPEN_CREATE);
553 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
555 isreg = S_ISREG(la->la_mode);
556 isdir = S_ISDIR(la->la_mode);
557 islnk = S_ISLNK(la->la_mode);
558 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
560 /* compatibility check for 2.10 clients when it tries to open mirrored
561 * files. 2.10 clients don't verify overlapping components so they
562 * would read and write mirrored files just as if they were normal
563 * PFL files, which will cause the problem that sycned mirrors actually
564 * contain different data.
565 * Older clients are not a concern here because they don't even
566 * understand PFL layout. */
567 if (isreg && !exp_connect_flr(exp) && ma->ma_valid & MA_LOV &&
568 mdt_lmm_is_flr(ma->ma_lmm)) {
569 /* LU-10286: for simplicity clients who don't understand
570 * mirrored layout(with connect flag OBD_CONNECT2_FLR) won't
571 * be able to open mirrored files */
575 /* Overstriped files can crash older clients */
576 if (isreg && !exp_connect_overstriping(exp) &&
577 mdt_lmm_is_overstriping(ma->ma_lmm))
580 /* LU-2275, simulate broken behaviour (esp. prevalent in
581 * pre-2.4 servers where a very strange reply is sent on error
582 * that looks like it was actually almost successful and a
583 * failure at the same time.) */
584 if (CFS_FAIL_CHECK(OBD_FAIL_MDS_NEGATIVE_POSITIVE)) {
585 mdt_set_disposition(info, rep, DISP_OPEN_OPEN |
589 if (open_flags & MDS_OPEN_LOCK)
590 mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
595 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
596 if (exp_connect_flags(exp) & OBD_CONNECT_ACL) {
597 struct lu_nodemap *nodemap = nodemap_get_from_exp(exp);
599 RETURN(PTR_ERR(nodemap));
601 rc = mdt_pack_acl2body(info, repbody, o, nodemap);
602 nodemap_putref(nodemap);
609 * If we are following a symlink, don't open; and do not return open
610 * handle for special nodes as client required.
612 if (islnk || (!isreg && !isdir &&
613 (exp_connect_flags(req->rq_export) & OBD_CONNECT_NODEVOH))) {
614 lustre_msg_set_transno(req->rq_repmsg, 0);
619 * We need to return the existing object's fid back, so it is done here,
620 * after preparing the reply.
622 if (!created && (open_flags & MDS_OPEN_EXCL) &&
623 (open_flags & MDS_OPEN_CREAT))
626 /* This can't be done earlier, we need to return reply body */
628 if (open_flags & (MDS_OPEN_CREAT | MDS_FMODE_WRITE)) {
629 /* We are trying to create or write an existing dir. */
632 } else if (open_flags & MDS_OPEN_DIRECTORY)
635 if (CFS_FAIL_CHECK_RESET(OBD_FAIL_MDS_OPEN_CREATE,
636 OBD_FAIL_MDS_LDLM_REPLY_NET | CFS_FAIL_ONCE))
640 if (info->mti_rr.rr_flags & MRF_OPEN_RESEND) {
641 spin_lock(&med->med_open_lock);
642 list_for_each(t, &med->med_open_head) {
643 mfd = list_entry(t, struct mdt_file_data, mfd_list);
644 if (mfd->mfd_xid == req->rq_xid) {
645 repbody->mbo_open_handle.cookie =
646 mfd->mfd_open_handle.h_cookie;
651 spin_unlock(&med->med_open_lock);
654 /* set repbody->ea_size for resent case */
655 if (ma->ma_valid & MA_LOV) {
656 LASSERT(ma->ma_lmm_size != 0);
657 repbody->mbo_eadatasize = ma->ma_lmm_size;
659 repbody->mbo_valid |= OBD_MD_FLDIREA;
661 repbody->mbo_valid |= OBD_MD_FLEASIZE;
663 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
666 /* if we have a real resend (not a resend afrer failover), it
667 * means close is already happend, so lets return error
672 rc = mdt_mfd_open(info, p, o, open_flags, created, rep);
674 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
679 void mdt_reconstruct_open(struct mdt_thread_info *info,
680 struct mdt_lock_handle *lhc)
682 struct req_capsule *pill = info->mti_pill;
683 struct ptlrpc_request *req = mdt_info_req(info);
684 struct mdt_reint_record *rr = &info->mti_rr;
685 struct md_attr *ma = &info->mti_attr;
686 struct ldlm_reply *ldlm_rep;
691 LASSERT(pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
692 ldlm_rep = req_capsule_server_get(pill, &RMF_DLM_REP);
694 ma->ma_need = MA_INODE | MA_HSM;
696 opdata = mdt_req_from_lrd(req, info->mti_reply_data);
697 mdt_set_disposition(info, ldlm_rep, opdata);
699 CDEBUG(D_INODE, "This is reconstruct open: disp=%#llx, result=%d\n",
700 ldlm_rep->lock_policy_res1, req->rq_status);
702 /* We did not create successfully, return error to client. */
703 GOTO(out, rc = req->rq_status);
705 /* tg_reply_data is just memory only structure, so any non zero fid
706 * means a real resend not a resend after recovery which need to be
707 * handled as regular open
709 if (likely(!fid_is_zero(&info->mti_reply_data->trd_object))) {
710 rr->rr_fid2 = &info->mti_reply_data->trd_object;
711 rr->rr_flags |= MRF_OPEN_RESEND;
712 rc = mdt_open_by_fid(info, ldlm_rep, lhc);
714 lustre_msg_set_transno(req->rq_repmsg, 0);
716 /* We did not try to create, so we are a pure open */
717 rc = mdt_reint_open(info, lhc);
722 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
723 LASSERT(ergo(rc < 0, lustre_msg_get_transno(req->rq_repmsg) == 0));
726 static int mdt_open_by_fid(struct mdt_thread_info *info, struct ldlm_reply *rep,
727 struct mdt_lock_handle *lhc)
729 u64 open_flags = info->mti_spec.sp_cr_flags;
730 struct mdt_reint_record *rr = &info->mti_rr;
731 struct md_attr *ma = &info->mti_attr;
732 struct mdt_object *o;
736 o = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid2);
738 RETURN(rc = PTR_ERR(o));
740 rc = mdt_check_enc(info, o);
744 if (unlikely(mdt_object_remote(o))) {
745 /* the child object was created on remote server */
746 struct mdt_body *repbody;
748 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
751 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
752 repbody->mbo_fid1 = *rr->rr_fid2;
753 repbody->mbo_valid |= (OBD_MD_FLID | OBD_MD_MDS);
756 if (mdt_object_exists(o)) {
757 tgt_open_obj_set(info->mti_env, mdt_obj2dt(o));
758 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
761 if ((open_flags & MDS_OPEN_EXCL) &&
762 (open_flags & MDS_OPEN_CREAT))
763 mdt_set_disposition(info, rep,
766 mdt_prep_ma_buf_from_rep(info, o, ma, open_flags);
767 rc = mdt_attr_get_complex(info, o, ma);
770 rc = mdt_finish_open(info, NULL, o, open_flags, rep);
773 mdt_pack_size2body(info, rr->rr_fid2, &lhc->mlh_reg_lh);
780 mdt_object_put(info->mti_env, o);
784 /* lock object for open */
785 static int mdt_object_open_lock(struct mdt_thread_info *info,
786 struct mdt_object *obj,
787 struct mdt_lock_handle *lhc,
790 struct md_attr *ma = &info->mti_attr;
791 __u64 open_flags = info->mti_spec.sp_cr_flags;
793 enum ldlm_mode lm = LCK_PR;
794 bool acq_lease = !!(open_flags & MDS_OPEN_LEASE);
795 bool try_layout = false;
796 bool create_layout = false;
798 __u32 dom_stripe = 0;
799 unsigned int dom_only = 0;
800 unsigned int dom_lock = 0;
804 if (req_is_replay(mdt_info_req(info)))
807 if (S_ISREG(lu_object_attr(&obj->mot_obj))) {
808 if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV) &&
809 md_should_create(open_flags))
810 create_layout = true;
811 if (exp_connect_layout(info->mti_exp) && !create_layout &&
812 ma->ma_need & MA_LOV)
815 /* DoM files can take IO lock at OPEN when it makes sense,
816 * check if file has DoM stripe and ask for lock if client
817 * no lock on that resource yet.
819 if (ma->ma_valid & MA_LOV && ma->ma_lmm != NULL)
820 dom_stripe = mdt_lmm_dom_entry_check(ma->ma_lmm,
822 /* If only DOM stripe is being used then we can expect IO
823 * to it after OPEN and will return corresponding DOM ibit
824 * using default strategy from mdt_opts.mo_dom_lock.
825 * Otherwise trylock mode is used always and DOM ibit will
826 * be returned optionally.
829 !mdt_dom_client_has_lock(info, mdt_object_fid(obj)))
830 dom_lock = !dom_only ? TRYLOCK_DOM_ON_OPEN :
831 info->mti_mdt->mdt_opts.mo_dom_lock;
835 /* lease open, acquire write mode of open sem */
836 down_write(&obj->mot_open_sem);
838 /* Lease exists and ask for new lease */
839 if (atomic_read(&obj->mot_lease_count) > 0) {
840 /* only exclusive open is supported, so lease
841 * are conflicted to each other */
842 GOTO(out, rc = -EBUSY);
845 /* Lease must be with open lock */
846 if (!(open_flags & MDS_OPEN_LOCK)) {
847 CERROR("%s: Request lease for file:"DFID ", but open lock "
848 "is missed, open_flags = %#llo : rc = %d\n",
849 mdt_obd_name(info->mti_mdt),
850 PFID(mdt_object_fid(obj)), open_flags, -EPROTO);
851 GOTO(out, rc = -EPROTO);
854 /* should conflict with new opens for write/execute */
856 *ibits = MDS_INODELOCK_OPEN;
858 /* never grant LCK_EX layout lock to client */
860 } else { /* normal open */
861 /* normal open holds read mode of open sem */
862 down_read(&obj->mot_open_sem);
864 if (open_flags & MDS_OPEN_LOCK) {
865 if (open_flags & MDS_FMODE_WRITE)
867 else if (open_flags & MDS_FMODE_EXEC)
872 *ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN;
873 } else if (atomic_read(&obj->mot_lease_count) > 0) {
874 if (open_flags & MDS_FMODE_WRITE)
880 *ibits = MDS_INODELOCK_OPEN;
883 lhc = &info->mti_lh[MDT_LH_LOCAL];
884 } else if (dom_lock) {
885 lm = (open_flags & MDS_FMODE_WRITE) ? LCK_PW : LCK_PR;
886 trybits |= MDS_INODELOCK_DOM | MDS_INODELOCK_LAYOUT;
889 CDEBUG(D_INODE, "normal open:"DFID" lease count: %d, lm: %d\n",
890 PFID(mdt_object_fid(obj)),
891 atomic_read(&obj->mot_lease_count), lm);
894 /* Return lookup lock to validate inode at the client side.
895 * This is pretty important otherwise MDT will return layout
896 * lock for each open.
897 * Since trylocks are opportunistic now and we also have
898 * ability to selectively cancel lock bits from clients on conflict,
899 * we would also return other useful bits: PERM and UPDATE - both
900 * necessary to ensure subsequent stats from the client would not
901 * need to talk to us again. Historically speaking both permissions
902 * and other inode data rarely changes after creation anyway, so
903 * there should not be any downsides from doing it for normal
906 if (!CFS_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_OPEN) && try_layout) {
907 if (!(*ibits & MDS_INODELOCK_LOOKUP))
908 trybits |= MDS_INODELOCK_LOOKUP;
909 trybits |= MDS_INODELOCK_LAYOUT;
910 /* PERM|UPDATE ibits in CR mode don't make sense, since
911 * all modifications lock these ibits in PW mode.
912 * Don't lock UPDATE|PERM ibits upon PCC attach, otherwise
913 * PCC will be detached when these ibits are revoked.
915 if (lm != LCK_CR && !(open_flags & MDS_OPEN_PCC))
916 trybits |= MDS_INODELOCK_UPDATE | MDS_INODELOCK_PERM;
919 if (*ibits | trybits)
920 rc = mdt_object_lock_try(info, obj, lhc, ibits, trybits, lm,
923 CDEBUG(D_INODE, "%s: Requested bits lock:"DFID ", ibits = %#llx/%#llx"
924 ", open_flags = %#llo, try_layout = %d : rc = %d\n",
925 mdt_obd_name(info->mti_mdt), PFID(mdt_object_fid(obj)),
926 *ibits, trybits, open_flags, try_layout, rc);
928 /* will change layout, revoke layout locks by enqueuing EX lock. */
929 if (rc == 0 && create_layout) {
930 struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LAYOUT];
932 CDEBUG(D_INODE, "Will create layout, get EX layout lock:"DFID
933 ", open_flags = %#llo\n",
934 PFID(mdt_object_fid(obj)), open_flags);
936 /* We cannot enqueue another lock for the same resource we
937 * already have a lock for, due to mechanics of waiting list
938 * iterating in ldlm, see LU-3601.
939 * As such we'll drop the open lock we just got above here,
940 * it's ok not to have this open lock as it's main purpose is to
941 * flush unused cached client open handles. */
942 if (lustre_handle_is_used(&lhc->mlh_reg_lh))
943 mdt_object_unlock(info, obj, lhc, 1);
945 LASSERT(!try_layout);
946 rc = mdt_object_lock(info, obj, ll, MDS_INODELOCK_LAYOUT,
949 CFS_FAIL_TIMEOUT(OBD_FAIL_MDS_LL_BLOCK, 2);
952 /* Check if there is any other open handles after acquiring
953 * open lock. At this point, caching open handles have been revoked
955 * XXX: Now only exclusive open is supported. Need to check the
956 * type of open for generic lease support. */
957 if (rc == 0 && acq_lease) {
958 struct ptlrpc_request *req = mdt_info_req(info);
959 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
960 struct mdt_file_data *mfd;
961 bool is_replay_or_resent;
964 /* For lease: application can open a file and then apply lease,
965 * @handle contains original open handle in that case.
966 * In recovery, open REQ will be replayed and the lease REQ may
967 * be resent that means the open handle is already stale, so we
968 * need to fix it up here by finding new handle. */
969 is_replay_or_resent = req_is_replay(req) ||
970 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT;
972 /* if the request is _not_ a replay request, rr_open_handle
973 * may be used to hold an open file handle which is issuing the
974 * lease request, so that this openhandle doesn't count. */
975 mfd = mdt_open_handle2mfd(med, info->mti_rr.rr_open_handle,
976 is_replay_or_resent);
980 CDEBUG(D_INODE, "acq_lease "DFID": openers: %d, want: %d\n",
981 PFID(mdt_object_fid(obj)),
982 atomic_read(&obj->mot_open_count), open_count);
984 if (atomic_read(&obj->mot_open_count) > open_count) {
985 /* fail if anyone *else* has opened file for write */
986 if (mdt_write_read(obj) > 1)
987 GOTO(out, rc = -EBUSY);
996 static void mdt_object_open_unlock(struct mdt_thread_info *info,
997 struct mdt_object *obj,
998 struct mdt_lock_handle *lhc,
1001 __u64 open_flags = info->mti_spec.sp_cr_flags;
1002 struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LOCAL];
1005 if (req_is_replay(mdt_info_req(info)))
1008 /* Release local lock - the lock put in MDT_LH_LOCAL will never
1009 * return to client side. */
1010 if (lustre_handle_is_used(&ll->mlh_reg_lh))
1011 mdt_object_unlock(info, obj, ll, 1);
1013 ll = &info->mti_lh[MDT_LH_LAYOUT];
1014 /* Release local layout lock, layout was created */
1015 if (lustre_handle_is_used(&ll->mlh_reg_lh)) {
1016 LASSERT(!(ibits & MDS_INODELOCK_LAYOUT));
1017 mdt_object_unlock(info, obj, ll, 1);
1020 if (open_flags & MDS_OPEN_LEASE)
1021 up_write(&obj->mot_open_sem);
1023 up_read(&obj->mot_open_sem);
1025 /* Cross-ref case, the lock should be returned to the client */
1026 if (ibits == 0 || rc == -MDT_EREMOTE_OPEN)
1029 if (!(open_flags & MDS_OPEN_LOCK) && !(ibits & MDS_INODELOCK_LAYOUT) &&
1030 !(ibits & MDS_INODELOCK_DOM)) {
1031 /* for the open request, the lock will only return to client
1032 * if open or layout lock is granted. */
1036 if (rc != 0 || !lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1037 struct ldlm_reply *ldlm_rep;
1039 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
1040 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1041 if (lustre_handle_is_used(&lhc->mlh_reg_lh))
1042 mdt_object_unlock(info, obj, lhc, 1);
1048 * Check release is permitted for the current HSM flags.
1050 static bool mdt_hsm_release_allow(const struct md_attr *ma)
1052 if (!(ma->ma_valid & MA_HSM))
1055 if (ma->ma_hsm.mh_flags & (HS_DIRTY|HS_NORELEASE|HS_LOST))
1058 if (!(ma->ma_hsm.mh_flags & HS_ARCHIVED))
1064 static int mdt_refetch_lovea(struct mdt_thread_info *info,
1065 struct mdt_object *o, struct md_attr *ma,
1068 struct mdt_body *repbody;
1071 if ((ibits & MDS_INODELOCK_LAYOUT) == 0)
1073 if (!S_ISREG(lu_object_attr(&o->mot_obj)))
1076 if ((ma->ma_valid & MA_LOV) == 0)
1079 ma->ma_valid &= ~MA_LOV;
1080 info->mti_big_lmm_used = 0;
1081 ma->ma_lmm = req_capsule_server_get(info->mti_pill, &RMF_MDT_MD);
1082 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill, &RMF_MDT_MD,
1084 rc = __mdt_stripe_get(info, o, ma, XATTR_NAME_LOV);
1088 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1089 repbody->mbo_eadatasize = ma->ma_lmm_size;
1093 static int mdt_open_by_fid_lock(struct mdt_thread_info *info,
1094 struct ldlm_reply *rep,
1095 struct mdt_lock_handle *lhc)
1097 const struct lu_env *env = info->mti_env;
1098 struct mdt_device *mdt = info->mti_mdt;
1099 u64 open_flags = info->mti_spec.sp_cr_flags;
1100 struct mdt_reint_record *rr = &info->mti_rr;
1101 struct md_attr *ma = &info->mti_attr;
1102 struct mdt_object *parent = NULL;
1103 struct mdt_object *o;
1104 bool object_locked = false;
1109 if (md_should_create(open_flags)) {
1110 if (!lu_fid_eq(rr->rr_fid1, rr->rr_fid2)) {
1111 parent = mdt_object_find(env, mdt, rr->rr_fid1);
1112 if (IS_ERR(parent)) {
1113 CDEBUG(D_INODE, "Fail to find parent "DFID
1114 " for anonymous created %ld, try to"
1115 " use server-side parent.\n",
1116 PFID(rr->rr_fid1), PTR_ERR(parent));
1121 ma->ma_need |= MA_PFID;
1124 o = mdt_object_find(env, mdt, rr->rr_fid2);
1126 GOTO(out_parent_put, rc = PTR_ERR(o));
1128 if (mdt_object_remote(o)) {
1129 CDEBUG(D_INFO, "%s: "DFID" is on remote MDT.\n",
1130 mdt_obd_name(info->mti_mdt),
1132 GOTO(out, rc = -EREMOTE);
1133 } else if (!mdt_object_exists(o)) {
1134 mdt_set_disposition(info, rep,
1138 GOTO(out, rc = -ENOENT);
1141 /* do not check enc for directory: always allow open */
1142 if (!S_ISDIR(lu_object_attr(&o->mot_obj))) {
1143 rc = mdt_check_enc(info, o);
1148 mdt_set_disposition(info, rep, (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1150 mdt_prep_ma_buf_from_rep(info, o, ma, open_flags);
1151 if (open_flags & MDS_OPEN_RELEASE)
1152 ma->ma_need |= MA_HSM;
1153 rc = mdt_attr_get_complex(info, o, ma);
1157 /* We should not change file's existing LOV EA */
1158 if (S_ISREG(lu_object_attr(&o->mot_obj)) &&
1159 open_flags & MDS_OPEN_HAS_EA && ma->ma_valid & MA_LOV)
1160 GOTO(out, rc = -EEXIST);
1162 /* If a release request, check file open flags are fine and ask for an
1163 * exclusive open access. */
1164 if (open_flags & MDS_OPEN_RELEASE && !mdt_hsm_release_allow(ma))
1165 GOTO(out, rc = -EPERM);
1167 rc = mdt_check_resent_lock(info, o, lhc);
1170 } else if (rc > 0) {
1171 rc = mdt_object_open_lock(info, o, lhc, &ibits);
1172 object_locked = true;
1174 GOTO(out_unlock, rc);
1177 if (ma->ma_valid & MA_PFID) {
1178 parent = mdt_object_find(env, mdt, &ma->ma_pfid);
1179 if (IS_ERR(parent)) {
1180 CDEBUG(D_INODE, "Fail to find parent "DFID
1181 " for anonymous created %ld, try to"
1182 " use system default.\n",
1183 PFID(&ma->ma_pfid), PTR_ERR(parent));
1188 tgt_open_obj_set(info->mti_env, mdt_obj2dt(o));
1189 rc = mdt_finish_open(info, parent, o, open_flags, rep);
1191 GOTO(out_unlock, rc);
1193 mdt_set_disposition(info, rep, DISP_LOOKUP_POS);
1194 if (open_flags & MDS_OPEN_LOCK)
1195 mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
1196 if (open_flags & MDS_OPEN_LEASE)
1197 mdt_set_disposition(info, rep, DISP_OPEN_LEASE);
1200 * if layout lock is granted, then we should re-fetch LOVEA
1201 * which was originally taken w/o the lock
1203 rc = mdt_refetch_lovea(info, o, ma, ibits);
1205 GOTO(out_unlock, rc);
1209 mdt_object_open_unlock(info, o, lhc, ibits, rc);
1211 mdt_object_put(env, o);
1213 mdt_pack_size2body(info, rr->rr_fid2, &lhc->mlh_reg_lh);
1216 mdt_object_put(env, parent);
1220 /* Cross-ref request. Currently it can only be a pure open (w/o create) */
1221 static int mdt_cross_open(struct mdt_thread_info *info,
1222 const struct lu_fid *parent_fid,
1223 const struct lu_fid *fid,
1224 struct ldlm_reply *rep, u64 open_flags)
1226 struct md_attr *ma = &info->mti_attr;
1227 struct mdt_object *o;
1231 o = mdt_object_find(info->mti_env, info->mti_mdt, fid);
1233 RETURN(rc = PTR_ERR(o));
1235 rc = mdt_check_enc(info, o);
1239 if (mdt_object_remote(o)) {
1240 /* Something is wrong here, the object is on another MDS! */
1241 CERROR("%s: "DFID" isn't on this server!: rc = %d\n",
1242 mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT);
1243 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
1245 "Object isn't on this server! FLD error?");
1248 if (mdt_object_exists(o)) {
1251 /* Do permission check for cross-open after converting
1252 * MDS_OPEN_* flags to MAY_* permission mask.
1254 mask = mds_accmode(open_flags);
1256 rc = mo_permission(info->mti_env, NULL,
1257 mdt_object_child(o), NULL, mask);
1261 mdt_prep_ma_buf_from_rep(info, o, ma, open_flags);
1262 rc = mdt_attr_get_complex(info, o, ma);
1266 rc = mdt_pack_secctx_in_reply(info, o);
1270 rc = mdt_pack_encctx_in_reply(info, o);
1274 rc = mdt_finish_open(info, NULL, o, open_flags, rep);
1277 * Something is wrong here. lookup was positive but
1278 * there is no object!
1280 CERROR("%s: "DFID" doesn't exist!: rc = %d\n",
1281 mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT);
1286 mdt_object_put(info->mti_env, o);
1292 * find root object and take its xattr lock if it's on remote MDT, later create
1293 * may use fs default striping (which is stored in root xattr).
1295 static int mdt_lock_root_xattr(struct mdt_thread_info *info,
1296 struct mdt_device *mdt)
1298 struct mdt_object *md_root = mdt->mdt_md_root;
1299 struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_LOCAL];
1300 __u64 ibits = MDS_INODELOCK_XATTR;
1303 if (md_root == NULL) {
1304 lu_root_fid(&info->mti_tmp_fid1);
1305 md_root = mdt_object_find(info->mti_env, mdt,
1306 &info->mti_tmp_fid1);
1307 if (IS_ERR(md_root))
1308 return PTR_ERR(md_root);
1310 spin_lock(&mdt->mdt_lock);
1311 if (mdt->mdt_md_root != NULL) {
1312 spin_unlock(&mdt->mdt_lock);
1314 LASSERTF(mdt->mdt_md_root == md_root,
1315 "Different root object ("
1316 DFID") instances, %p, %p\n",
1317 PFID(&info->mti_tmp_fid1),
1318 mdt->mdt_md_root, md_root);
1319 LASSERT(atomic_read(
1320 &md_root->mot_obj.lo_header->loh_ref) > 1);
1322 mdt_object_put(info->mti_env, md_root);
1324 mdt->mdt_md_root = md_root;
1325 spin_unlock(&mdt->mdt_lock);
1329 if (md_root->mot_cache_attr || !mdt_object_remote(md_root))
1332 mdt_lock_reg_init(lh, LCK_PR);
1333 rc = mdt_object_lock_internal(info, md_root, mdt_object_fid(md_root),
1334 lh, &ibits, 0, true, false);
1338 md_root->mot_cache_attr = 1;
1340 /* don't cancel this lock, so that we know the cached xattr is valid. */
1341 ldlm_lock_decref(&lh->mlh_rreg_lh, LCK_PR);
1342 lh->mlh_rreg_lh.cookie = 0ull;
1347 static inline enum ldlm_mode mdt_open_lock_mode(struct mdt_thread_info *info,
1348 struct mdt_object *p,
1349 struct lu_name *name,
1355 /* We don't need to take the DLM lock for a volatile */
1356 if (open_flags & MDS_OPEN_VOLATILE)
1359 if (!(open_flags & MDS_OPEN_CREAT))
1362 result = mdo_lookup(info->mti_env, mdt_object_child(p), name, &fid,
1365 /* If the file exists we only need a read lock on the parent */
1366 return (result == 0) ? LCK_PR : LCK_PW;
1369 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc)
1371 struct mdt_device *mdt = info->mti_mdt;
1372 struct ptlrpc_request *req = mdt_info_req(info);
1373 struct mdt_object *parent;
1374 struct mdt_object *child;
1375 struct mdt_lock_handle *lh = NULL;
1376 struct ldlm_reply *ldlm_rep;
1377 struct mdt_body *repbody;
1378 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1379 struct lu_ucred *uc = mdt_ucred(info);
1380 struct md_attr *ma = &info->mti_attr;
1381 u64 open_flags = info->mti_spec.sp_cr_flags;
1383 struct mdt_reint_record *rr = &info->mti_rr;
1386 int object_locked = 0;
1387 enum ldlm_mode lock_mode;
1389 ktime_t kstart = ktime_get();
1392 CFS_FAIL_TIMEOUT_ORSET(OBD_FAIL_MDS_PAUSE_OPEN, CFS_FAIL_ONCE,
1393 (obd_timeout + 1) / 4);
1395 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1397 ma->ma_need = MA_INODE;
1400 LASSERT(info->mti_pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
1401 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
1403 if (unlikely(open_flags & MDS_OPEN_JOIN_FILE)) {
1404 CERROR("file join is not supported anymore.\n");
1405 GOTO(out, result = err_serious(-EOPNOTSUPP));
1407 msg_flags = lustre_msg_get_flags(req->rq_reqmsg);
1409 if ((open_flags & (MDS_OPEN_HAS_EA | MDS_OPEN_HAS_OBJS)) &&
1410 info->mti_spec.u.sp_ea.eadata == NULL)
1411 GOTO(out, result = err_serious(-EINVAL));
1413 if (open_flags & MDS_FMODE_WRITE &&
1414 exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
1415 GOTO(out, result = -EROFS);
1417 CDEBUG(D_INODE, "I am going to open "DFID"/("DNAME"->"DFID") "
1418 "cr_flag=%#llo mode=0%06o msg_flag=0x%x\n",
1419 PFID(rr->rr_fid1), PNAME(&rr->rr_name), PFID(rr->rr_fid2),
1420 open_flags, ma->ma_attr.la_mode, msg_flags);
1422 /* Prevent by-fid operation if parent fid is .lustre/fid.
1423 * Also, we want rbac roles to have precedence over any other
1424 * permission or capability checks
1426 if (lu_fid_eq(rr->rr_fid1, &LU_OBF_FID) && !uc->uc_rbac_byfid_ops)
1427 GOTO(out, result = -EPERM);
1429 if (info->mti_cross_ref) {
1430 /* This is cross-ref open */
1431 mdt_set_disposition(info, ldlm_rep,
1432 (DISP_IT_EXECD | DISP_LOOKUP_EXECD |
1434 result = mdt_cross_open(info, rr->rr_fid2, rr->rr_fid1,
1435 ldlm_rep, open_flags);
1437 } else if (req_is_replay(req)) {
1438 result = mdt_open_by_fid(info, ldlm_rep, lhc);
1440 if (result != -ENOENT)
1443 /* We didn't find the correct object, so we need to re-create it
1444 * via a regular replay. */
1445 if (!(open_flags & MDS_OPEN_CREAT)) {
1446 DEBUG_REQ(D_ERROR, req,
1447 "OPEN & CREAT not in open replay/by_fid");
1448 GOTO(out, result = -EFAULT);
1450 CDEBUG(D_INFO, "No object(1), continue as regular open.\n");
1451 } else if (open_flags & MDS_OPEN_BY_FID) {
1452 result = mdt_open_by_fid_lock(info, ldlm_rep, lhc);
1454 CDEBUG(D_INFO, "no object for "DFID": %d\n",
1455 PFID(rr->rr_fid2), result);
1459 if (CFS_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK))
1460 GOTO(out, result = err_serious(-ENOMEM));
1462 mdt_set_disposition(info, ldlm_rep,
1463 (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1465 if (!lu_name_is_valid(&rr->rr_name))
1466 GOTO(out, result = -EPROTO);
1468 result = mdt_lock_root_xattr(info, mdt);
1472 parent = mdt_object_find(info->mti_env, mdt, rr->rr_fid1);
1474 GOTO(out, result = PTR_ERR(parent));
1476 /* get and check version of parent */
1477 result = mdt_version_get_check(info, parent, 0);
1479 mdt_object_put(info->mti_env, parent);
1483 if (!uc->uc_rbac_fscrypt_admin &&
1484 parent->mot_obj.lo_header->loh_attr & LOHA_FSCRYPT_MD &&
1485 open_flags & MDS_OPEN_CREAT)
1486 GOTO(out_parent, result = -EPERM);
1488 result = mdt_check_enc(info, parent);
1490 GOTO(out_parent, result);
1492 fid_zero(child_fid);
1494 lock_mode = mdt_open_lock_mode(info, parent, &rr->rr_name, open_flags);
1496 CFS_RACE(OBD_FAIL_MDS_REINT_OPEN);
1498 if (lock_mode != LCK_NL) {
1499 lh = &info->mti_lh[MDT_LH_PARENT];
1500 result = mdt_parent_lock(info, parent, lh, &rr->rr_name,
1503 GOTO(out_parent, result);
1505 result = mdo_lookup(info->mti_env, mdt_object_child(parent),
1506 &rr->rr_name, child_fid, &info->mti_spec);
1509 LASSERTF(ergo(result == 0, fid_is_sane(child_fid)),
1510 "looking for "DFID"/"DNAME", found FID = "DFID"\n",
1511 PFID(mdt_object_fid(parent)), PNAME(&rr->rr_name),
1514 if (result != 0 && result != -ENOENT)
1515 GOTO(out_parent_unlock, result);
1517 CFS_RACE(OBD_FAIL_MDS_REINT_OPEN2);
1519 if (result == -ENOENT) {
1520 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1521 if (!(open_flags & MDS_OPEN_CREAT))
1522 GOTO(out_parent_unlock, result);
1523 if (mdt_rdonly(req->rq_export))
1524 GOTO(out_parent_unlock, result = -EROFS);
1526 LASSERT(equi(lh == NULL, lock_mode == LCK_NL));
1528 if (lock_mode == LCK_PR) {
1529 /* unlink vs create race: get write lock and restart */
1530 mdt_object_unlock(info, parent, lh, 1);
1531 mdt_clear_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1536 *child_fid = *info->mti_rr.rr_fid2;
1537 LASSERTF(fid_is_sane(child_fid), "fid="DFID"\n",
1539 /* In the function below, .hs_keycmp resolves to
1540 * lu_obj_hop_keycmp() */
1541 /* coverity[overrun-buffer-val] */
1542 child = mdt_object_new(info->mti_env, mdt, child_fid);
1545 * Check for O_EXCL is moved to the mdt_finish_open(),
1546 * we need to return FID back in that case.
1548 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1549 child = mdt_object_find(info->mti_env, mdt, child_fid);
1552 GOTO(out_parent_unlock, result = PTR_ERR(child));
1554 /** check version of child */
1555 rc = mdt_version_get_check(info, child, 1);
1557 GOTO(out_child, result = rc);
1559 tgt_open_obj_set(info->mti_env, mdt_obj2dt(child));
1561 if (result == -ENOENT) {
1562 /* Create under OBF and .lustre is not permitted */
1563 if (!fid_is_md_operative(rr->rr_fid1) &&
1564 (open_flags & MDS_OPEN_VOLATILE) == 0)
1565 GOTO(out_child, result = -EPERM);
1567 /* save versions in reply */
1568 mdt_version_get_save(info, parent, 0);
1569 mdt_version_get_save(info, child, 1);
1571 /* version of child will be changed */
1572 tgt_vbr_obj_set(info->mti_env, mdt_obj2dt(child));
1574 /* Not found and with MDS_OPEN_CREAT: let's create it. */
1575 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1577 /* Don't do lookup sanity check. We know name doesn't exist. */
1578 info->mti_spec.sp_cr_lookup = 0;
1579 info->mti_spec.sp_feat = &dt_directory_features;
1581 result = mdo_create(info->mti_env, mdt_object_child(parent),
1582 &rr->rr_name, mdt_object_child(child),
1583 &info->mti_spec, &info->mti_attr);
1584 if (result == -ERESTART) {
1585 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1586 GOTO(out_child, result);
1588 mdt_prep_ma_buf_from_rep(info, child, ma, open_flags);
1589 /* XXX: we should call this once, see few lines below */
1591 result = mdt_attr_get_complex(info, child, ma);
1594 GOTO(out_child, result);
1597 mdt_counter_incr(req, LPROC_MDT_MKNOD,
1598 ktime_us_delta(ktime_get(), kstart));
1601 * The object is on remote node, return its FID for remote open.
1603 if (mdt_object_remote(child)) {
1605 * Check if this lock already was sent to client and
1606 * this is resent case. For resent case do not take lock
1607 * again, use what is already granted.
1609 LASSERT(lhc != NULL);
1611 rc = mdt_check_resent_lock(info, child, lhc);
1613 GOTO(out_child, result = rc);
1615 rc = mdt_object_lookup_lock(info, NULL, child,
1616 lhc, LCK_PR, false);
1617 repbody->mbo_fid1 = *mdt_object_fid(child);
1618 repbody->mbo_valid |= (OBD_MD_FLID | OBD_MD_MDS);
1622 result = -MDT_EREMOTE_OPEN;
1623 GOTO(out_child, result);
1624 } else if (mdt_object_exists(child)) {
1625 /* Check early for MDS_OPEN_DIRECTORY/O_DIRECTORY to
1626 * avoid opening regular files from lfs getstripe
1627 * since doing so breaks the leases used by lfs
1628 * mirror. See LU-13693. */
1629 if (open_flags & MDS_OPEN_DIRECTORY &&
1630 S_ISREG(lu_object_attr(&child->mot_obj)))
1631 GOTO(out_child, result = -ENOTDIR);
1633 /* We have to get attr & LOV EA & HSM for this
1635 mdt_prep_ma_buf_from_rep(info, child, ma, open_flags);
1636 ma->ma_need |= MA_HSM;
1637 result = mdt_attr_get_complex(info, child, ma);
1639 GOTO(out_child, result);
1641 /* Object does not exist. Likely FS corruption. */
1642 CERROR("%s: name '"DNAME"' present, but FID "
1643 DFID" is invalid\n", mdt_obd_name(info->mti_mdt),
1644 PNAME(&rr->rr_name), PFID(child_fid));
1645 GOTO(out_child, result = -EIO);
1649 repbody->mbo_max_mdsize = info->mti_mdt->mdt_max_mdsize;
1650 repbody->mbo_valid |= OBD_MD_FLMODEASIZE;
1652 rc = mdt_pack_secctx_in_reply(info, child);
1654 GOTO(out_child, result = rc);
1656 rc = mdt_pack_encctx_in_reply(info, child);
1658 GOTO(out_child, result = rc);
1660 rc = mdt_check_resent_lock(info, child, lhc);
1662 GOTO(out_child, result = rc);
1663 } else if (rc == 0) {
1664 /* the open lock might already be gotten in
1665 * ldlm_handle_enqueue() */
1666 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
1667 if (open_flags & MDS_OPEN_LOCK)
1668 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1670 /* get openlock if this isn't replay and client requested it */
1671 if (!req_is_replay(req)) {
1672 CFS_FAIL_TIMEOUT(OBD_FAIL_MDS_DELAY_OPEN, cfs_fail_val);
1673 rc = mdt_object_open_lock(info, child, lhc, &ibits);
1676 GOTO(out_child_unlock, result = rc);
1677 else if (open_flags & MDS_OPEN_LOCK)
1678 mdt_set_disposition(info, ldlm_rep,
1682 /* Try to open it now. */
1683 rc = mdt_finish_open(info, parent, child, open_flags, ldlm_rep);
1686 /* openlock will be released if mdt_finish_open() failed */
1687 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1689 if (created && (open_flags & MDS_OPEN_VOLATILE)) {
1690 CERROR("%s: cannot open volatile file "DFID", orphan "
1691 "file will be left in PENDING directory until "
1692 "next reboot, rc = %d\n", mdt_obd_name(mdt),
1693 PFID(mdt_object_fid(child)), rc);
1694 GOTO(out_child_unlock, result);
1700 rc = mdo_unlink(info->mti_env,
1701 mdt_object_child(parent),
1702 mdt_object_child(child),
1704 &info->mti_attr, 0);
1706 CERROR("%s: "DFID" cleanup of open: rc = %d\n",
1707 mdt_obd_name(info->mti_mdt),
1708 PFID(mdt_object_fid(child)), rc);
1709 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1711 GOTO(out_child_unlock, result);
1715 * if layout lock is granted, then we should re-fetch LOVEA
1716 * which was originally taken w/o the lock.
1718 result = mdt_refetch_lovea(info, child, ma, ibits);
1720 mdt_counter_incr(req, LPROC_MDT_OPEN,
1721 ktime_us_delta(ktime_get(), kstart));
1723 GOTO(out_child_unlock, result);
1727 mdt_object_open_unlock(info, child, lhc, ibits, result);
1729 mdt_object_put(info->mti_env, child);
1731 mdt_pack_size2body(info, child_fid, &lhc->mlh_reg_lh);
1734 mdt_object_unlock(info, parent, lh, result || !created);
1737 mdt_object_put(info->mti_env, parent);
1740 lustre_msg_set_transno(req->rq_repmsg, 0);
1745 * Create an orphan object use local root.
1747 static struct mdt_object *mdt_orphan_open(struct mdt_thread_info *info,
1748 struct mdt_device *mdt,
1749 const struct lu_fid *fid,
1750 struct md_attr *attr, fmode_t fmode)
1752 const struct lu_env *env = info->mti_env;
1753 struct md_op_spec *spec = &info->mti_spec;
1754 struct lu_fid *local_root_fid = &info->mti_tmp_fid1;
1755 struct mdt_object *obj = NULL;
1756 struct mdt_object *local_root;
1757 static const struct lu_name lname = {
1758 .ln_name = "i_am_nobody",
1759 .ln_namelen = sizeof("i_am_nobody") - 1,
1761 struct lu_ucred *uc;
1762 kernel_cap_t uc_cap_save;
1766 rc = dt_root_get(env, mdt->mdt_bottom, local_root_fid);
1768 RETURN(ERR_PTR(rc));
1770 local_root = mdt_object_find(env, mdt, local_root_fid);
1771 if (IS_ERR(local_root))
1774 obj = mdt_object_new(env, mdt, fid);
1776 GOTO(out, rc = PTR_ERR(obj));
1778 spec->sp_cr_lookup = 0;
1779 spec->sp_feat = &dt_directory_features;
1780 spec->sp_cr_flags = MDS_OPEN_VOLATILE | fmode;
1781 if (attr->ma_valid & MA_LOV) {
1782 spec->u.sp_ea.eadata = attr->ma_lmm;
1783 spec->u.sp_ea.eadatalen = attr->ma_lmm_size;
1784 spec->sp_cr_flags |= MDS_OPEN_HAS_EA;
1786 spec->sp_cr_flags |= MDS_OPEN_DELAY_CREATE;
1790 uc_cap_save = uc->uc_cap;
1791 cap_raise(uc->uc_cap, CAP_DAC_OVERRIDE);
1792 rc = mdo_create(env, mdt_object_child(local_root), &lname,
1793 mdt_object_child(obj), spec, attr);
1794 uc->uc_cap = uc_cap_save;
1796 CERROR("%s: cannot create volatile file "DFID": rc = %d\n",
1797 mdt_obd_name(mdt), PFID(fid), rc);
1801 rc = mo_open(env, mdt_object_child(obj), MDS_OPEN_CREATED, spec);
1803 CERROR("%s: cannot open volatile file "DFID", orphan "
1804 "file will be left in PENDING directory until "
1805 "next reboot, rc = %d\n", mdt_obd_name(mdt),
1812 mdt_object_put(env, obj);
1815 mdt_object_put(env, local_root);
1819 /* XXX Look into layout in MDT layer. */
1820 static inline int mdt_hsm_set_released(struct lov_mds_md *lmm)
1822 struct lov_comp_md_v1 *comp_v1;
1823 struct lov_mds_md *v1;
1827 if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_COMP_V1_DEFINED)) {
1828 comp_v1 = (struct lov_comp_md_v1 *)lmm;
1830 if (comp_v1->lcm_entry_count == 0)
1833 for (i = 0; i < le16_to_cpu(comp_v1->lcm_entry_count); i++) {
1834 off = le32_to_cpu(comp_v1->lcm_entries[i].lcme_offset);
1835 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
1836 v1->lmm_pattern |= cpu_to_le32(LOV_PATTERN_F_RELEASED);
1839 lmm->lmm_pattern |= cpu_to_le32(LOV_PATTERN_F_RELEASED);
1844 static inline int mdt_get_lmm_gen(struct lov_mds_md *lmm, __u32 *gen)
1846 struct lov_comp_md_v1 *comp_v1;
1848 if (le32_to_cpu(lmm->lmm_magic == LOV_MAGIC_COMP_V1)) {
1849 comp_v1 = (struct lov_comp_md_v1 *)lmm;
1850 *gen = le32_to_cpu(comp_v1->lcm_layout_gen);
1851 } else if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V1 ||
1852 le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V3) {
1853 *gen = le16_to_cpu(lmm->lmm_layout_gen);
1860 static int mdt_hsm_release(struct mdt_thread_info *info, struct mdt_object *o,
1863 struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_LAYOUT];
1864 struct lu_ucred *uc = mdt_ucred(info);
1865 struct close_data *data;
1866 struct ldlm_lock *lease;
1867 struct mdt_object *orphan;
1868 struct md_attr *orp_ma;
1876 if (mdt_rdonly(info->mti_exp))
1879 data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
1883 lease = ldlm_handle2lock(&data->cd_handle);
1887 /* try to hold open_sem so that nobody else can open the file */
1888 if (!down_write_trylock(&o->mot_open_sem)) {
1889 ldlm_lock_cancel(lease);
1890 GOTO(out_reprocess, rc = -EBUSY);
1893 /* Check if the lease open lease has already canceled */
1894 lock_res_and_lock(lease);
1895 lease_broken = ldlm_is_cancel(lease);
1896 unlock_res_and_lock(lease);
1898 LDLM_DEBUG(lease, DFID " lease broken? %d",
1899 PFID(mdt_object_fid(o)), lease_broken);
1901 /* Cancel server side lease. Client side counterpart should
1902 * have been cancelled. It's okay to cancel it now as we've
1903 * held mot_open_sem. */
1904 ldlm_lock_cancel(lease);
1906 if (lease_broken) /* don't perform release task */
1907 GOTO(out_unlock, rc = -ESTALE);
1909 if (fid_is_zero(&data->cd_fid) || !fid_is_sane(&data->cd_fid))
1910 GOTO(out_unlock, rc = -EINVAL);
1912 /* ma_need was set before but it seems fine to change it in order to
1913 * avoid modifying the one from RPC */
1914 ma->ma_need = MA_HSM;
1915 rc = mdt_attr_get_complex(info, o, ma);
1917 GOTO(out_unlock, rc);
1919 if (ma->ma_attr_flags & MDS_PCC_ATTACH) {
1920 if (ma->ma_valid & MA_HSM) {
1921 if (ma->ma_hsm.mh_flags & HS_RELEASED)
1922 GOTO(out_unlock, rc = -EALREADY);
1924 if (ma->ma_hsm.mh_arch_id != data->cd_archive_id)
1926 DFID" archive id diff: %llu:%u\n",
1927 PFID(mdt_object_fid(o)),
1928 ma->ma_hsm.mh_arch_id,
1929 data->cd_archive_id);
1931 if (!(ma->ma_hsm.mh_flags & HS_DIRTY) &&
1932 ma->ma_hsm.mh_arch_ver == data->cd_data_version) {
1934 DFID" data version matches: packed=%llu "
1935 "and on-disk=%llu\n",
1936 PFID(mdt_object_fid(o)),
1937 data->cd_data_version,
1938 ma->ma_hsm.mh_arch_ver);
1939 ma->ma_hsm.mh_flags = HS_ARCHIVED | HS_EXISTS;
1942 if (ma->ma_hsm.mh_flags & HS_DIRTY)
1943 ma->ma_hsm.mh_flags = HS_ARCHIVED | HS_EXISTS;
1945 /* Set up HSM attribte for PCC archived object */
1946 BUILD_BUG_ON(sizeof(struct hsm_attrs) >
1947 sizeof(info->mti_xattr_buf));
1948 buf = &info->mti_buf;
1949 buf->lb_buf = info->mti_xattr_buf;
1950 buf->lb_len = sizeof(struct hsm_attrs);
1951 memset(&ma->ma_hsm, 0, sizeof(ma->ma_hsm));
1952 ma->ma_hsm.mh_flags = HS_ARCHIVED | HS_EXISTS;
1953 ma->ma_hsm.mh_arch_id = data->cd_archive_id;
1954 ma->ma_hsm.mh_arch_ver = data->cd_data_version;
1955 lustre_hsm2buf(buf->lb_buf, &ma->ma_hsm);
1957 rc = mo_xattr_set(info->mti_env, mdt_object_child(o),
1958 buf, XATTR_NAME_HSM, 0);
1960 GOTO(out_unlock, rc);
1963 if (!mdt_hsm_release_allow(ma))
1964 GOTO(out_unlock, rc = -EPERM);
1966 /* already released? */
1967 if (ma->ma_hsm.mh_flags & HS_RELEASED)
1968 GOTO(out_unlock, rc = 0);
1970 /* Compare on-disk and packed data_version */
1971 if (data->cd_data_version != ma->ma_hsm.mh_arch_ver) {
1972 CDEBUG(D_HSM, DFID" data_version mismatches: "
1973 "packed=%llu and on-disk=%llu\n",
1974 PFID(mdt_object_fid(o)),
1975 data->cd_data_version,
1976 ma->ma_hsm.mh_arch_ver);
1977 GOTO(out_unlock, rc = -EPERM);
1981 ma->ma_valid = MA_INODE;
1982 ma->ma_attr.la_valid &= LA_ATIME | LA_MTIME | LA_CTIME | LA_SIZE;
1983 rc = mo_attr_set(info->mti_env, mdt_object_child(o), ma);
1985 GOTO(out_unlock, rc);
1987 mutex_lock(&o->mot_som_mutex);
1988 rc2 = mdt_set_som(info, o, SOM_FL_STRICT, ma->ma_attr.la_size,
1989 ma->ma_attr.la_blocks);
1990 mutex_unlock(&o->mot_som_mutex);
1993 "%s: File "DFID" SOM update failed: rc = %d\n",
1994 mdt_obd_name(info->mti_mdt),
1995 PFID(mdt_object_fid(o)), rc2);
1998 ma->ma_need = MA_INODE | MA_LOV;
1999 rc = mdt_attr_get_complex(info, o, ma);
2001 GOTO(out_unlock, rc);
2003 if (!(ma->ma_valid & MA_LOV)) {
2004 /* Even empty file are released */
2005 memset(ma->ma_lmm, 0, sizeof(*ma->ma_lmm));
2006 ma->ma_lmm->lmm_magic = cpu_to_le32(LOV_MAGIC_V1_DEFINED);
2007 ma->ma_lmm->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0);
2008 ma->ma_lmm->lmm_stripe_size = cpu_to_le32(LOV_MIN_STRIPE_SIZE);
2009 ma->ma_lmm_size = sizeof(*ma->ma_lmm);
2011 /* Magic must be LOV_MAGIC_*_DEFINED or LOD will interpret
2012 * ma_lmm as lov_user_md, then it will be confused by union of
2013 * layout_gen and stripe_offset. */
2014 if ((le32_to_cpu(ma->ma_lmm->lmm_magic) & LOV_MAGIC_MASK) ==
2016 ma->ma_lmm->lmm_magic |= cpu_to_le32(LOV_MAGIC_DEFINED);
2018 GOTO(out_unlock, rc = -EINVAL);
2021 /* Set file as released. */
2022 rc = mdt_hsm_set_released(ma->ma_lmm);
2024 GOTO(out_unlock, rc);
2026 orp_ma = &info->mti_u.hsm.attr;
2027 orp_ma->ma_attr.la_mode = S_IFREG | S_IWUSR;
2028 /* We use root ownership to bypass potential quota
2029 * restrictions on the user and group of the file. */
2030 orp_ma->ma_attr.la_uid = 0;
2031 orp_ma->ma_attr.la_gid = 0;
2032 orp_ma->ma_attr.la_valid = LA_MODE | LA_UID | LA_GID;
2033 orp_ma->ma_lmm = ma->ma_lmm;
2034 orp_ma->ma_lmm_size = ma->ma_lmm_size;
2035 orp_ma->ma_valid = MA_INODE | MA_LOV;
2036 orphan = mdt_orphan_open(info, info->mti_mdt, &data->cd_fid, orp_ma,
2038 if (IS_ERR(orphan)) {
2039 CERROR("%s: cannot open orphan file "DFID": rc = %ld\n",
2040 mdt_obd_name(info->mti_mdt), PFID(&data->cd_fid),
2042 GOTO(out_unlock, rc = PTR_ERR(orphan));
2045 /* Set up HSM attribute for orphan object */
2046 BUILD_BUG_ON(sizeof(struct hsm_attrs) > sizeof(info->mti_xattr_buf));
2047 buf = &info->mti_buf;
2048 buf->lb_buf = info->mti_xattr_buf;
2049 buf->lb_len = sizeof(struct hsm_attrs);
2050 ma->ma_hsm.mh_flags |= HS_RELEASED;
2051 lustre_hsm2buf(buf->lb_buf, &ma->ma_hsm);
2052 ma->ma_hsm.mh_flags &= ~HS_RELEASED;
2054 rc = mdt_object_lock(info, o, lh, MDS_INODELOCK_LAYOUT |
2055 MDS_INODELOCK_XATTR, LCK_EX, false);
2057 GOTO(out_close, rc);
2059 /* The orphan has root ownership so we need to raise
2060 * CAP_FOWNER to set the HSM attributes. */
2062 cap_raise(uc->uc_cap, CAP_FOWNER);
2063 rc = mo_xattr_set(info->mti_env, mdt_object_child(orphan), buf,
2067 GOTO(out_layout_lock, rc);
2069 /* Swap layout with orphan objects. */
2070 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o),
2071 mdt_object_child(orphan),
2072 SWAP_LAYOUTS_MDS_HSM);
2074 if (!rc && ma->ma_attr_flags & MDS_PCC_ATTACH) {
2075 ma->ma_need = MA_LOV;
2076 rc = mdt_attr_get_complex(info, o, ma);
2082 /* Release exclusive LL */
2083 mdt_object_unlock(info, o, lh, 1);
2085 /* Close orphan object anyway */
2086 rc2 = mo_close(info->mti_env, mdt_object_child(orphan), orp_ma,
2089 CERROR("%s: error closing volatile file "DFID": rc = %d\n",
2090 mdt_obd_name(info->mti_mdt), PFID(&data->cd_fid), rc2);
2091 LU_OBJECT_DEBUG(D_HSM, info->mti_env, &orphan->mot_obj,
2093 mdt_object_put(info->mti_env, orphan);
2096 up_write(&o->mot_open_sem);
2098 /* already released */
2100 struct mdt_body *repbody;
2102 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2103 LASSERT(repbody != NULL);
2104 repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED;
2105 if (ma->ma_attr_flags & MDS_PCC_ATTACH) {
2106 LASSERT(ma->ma_valid & MA_LOV);
2107 rc = mdt_get_lmm_gen(ma->ma_lmm,
2108 &repbody->mbo_layout_gen);
2110 repbody->mbo_valid |= OBD_MD_LAYOUT_VERSION;
2115 ldlm_reprocess_all(lease->l_resource,
2116 lease->l_policy_data.l_inodebits.bits);
2117 LDLM_LOCK_PUT(lease);
2125 int mdt_close_handle_layouts(struct mdt_thread_info *info,
2126 struct mdt_object *o, struct md_attr *ma)
2128 struct mdt_lock_handle *lh1 = &info->mti_lh[MDT_LH_NEW];
2129 struct mdt_lock_handle *lh2 = &info->mti_lh[MDT_LH_OLD];
2130 struct close_data *data;
2131 struct ldlm_lock *lease;
2132 struct mdt_object *o1 = o, *o2 = NULL;
2134 bool swap_objects = false;
2138 if (exp_connect_flags(info->mti_exp) & OBD_CONNECT_RDONLY)
2141 if (!S_ISREG(lu_object_attr(&o1->mot_obj)))
2144 data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
2148 if (fid_is_zero(&data->cd_fid) || !fid_is_sane(&data->cd_fid))
2151 rc = lu_fid_cmp(&data->cd_fid, mdt_object_fid(o));
2154 * only MDS_CLOSE_LAYOUT_SPLIT use the same fid to indicate
2155 * mirror deletion, so we'd zero cd_fid, and keeps o2 be NULL.
2157 if (!(ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT))
2160 /* zero cd_fid to keeps o2 be NULL */
2161 fid_zero(&data->cd_fid);
2162 } else if (rc < 0) {
2163 /* Exchange o1 and o2, to enforce locking order */
2164 swap_objects = true;
2167 lease = ldlm_handle2lock(&data->cd_handle);
2171 if (!fid_is_zero(&data->cd_fid)) {
2172 o2 = mdt_object_find(info->mti_env, info->mti_mdt,
2175 GOTO(out_lease, rc = PTR_ERR(o2));
2177 if (!mdt_object_exists(o2))
2178 GOTO(out_obj, rc = -ENOENT);
2180 if (!S_ISREG(lu_object_attr(&o2->mot_obj)))
2181 GOTO(out_obj, rc = -EINVAL);
2187 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
2193 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2),
2199 /* try to hold open_sem so that nobody else can open the file */
2200 if (!down_write_trylock(&o->mot_open_sem)) {
2201 ldlm_lock_cancel(lease);
2202 GOTO(out_obj, rc = -EBUSY);
2205 /* Check if the lease open lease has already canceled */
2206 lock_res_and_lock(lease);
2207 lease_broken = ldlm_is_cancel(lease);
2208 unlock_res_and_lock(lease);
2210 LDLM_DEBUG(lease, DFID " lease broken? %d",
2211 PFID(mdt_object_fid(o)), lease_broken);
2213 /* Cancel server side lease. Client side counterpart should
2214 * have been cancelled. It's okay to cancel it now as we've
2215 * held mot_open_sem. */
2216 ldlm_lock_cancel(lease);
2219 GOTO(out_unlock_sem, rc = -ESTALE);
2221 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
2222 MDS_INODELOCK_XATTR, LCK_EX, false);
2224 GOTO(out_unlock_sem, rc);
2227 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
2228 MDS_INODELOCK_XATTR, LCK_EX, false);
2230 GOTO(out_unlock1, rc);
2233 /* Swap layout with orphan object */
2234 if (ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SWAP) {
2235 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
2236 mdt_object_child(o2), 0);
2237 } else if (ma->ma_attr_flags & MDS_CLOSE_LAYOUT_MERGE ||
2238 ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT) {
2239 struct lu_buf *buf = &info->mti_buf;
2240 struct md_rejig_data mrd;
2243 mrd.mrd_obj = mdt_object_child(o == o1 ? o2 : o1);
2245 if (!(ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT)) {
2246 /* paranoid check again */
2248 ":only mirror split support NULL o2 object\n",
2249 PFID(mdt_object_fid(o)));
2250 GOTO(out_unlock1, rc = -EINVAL);
2253 /* set NULL mrd_obj for deleting mirror objects */
2257 if (ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT) {
2258 mrd.mrd_mirror_id = data->cd_mirror_id;
2259 /* set a small enough blocks in the SoM */
2260 ma->ma_attr.la_blocks >>= 1;
2263 buf->lb_len = sizeof(mrd);
2265 rc = mo_xattr_set(info->mti_env, mdt_object_child(o), buf,
2267 ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT ?
2268 LU_XATTR_SPLIT : LU_XATTR_MERGE);
2269 if (rc == 0 && ma->ma_attr.la_valid & (LA_SIZE | LA_BLOCKS |
2270 LA_LSIZE | LA_LBLOCKS)) {
2272 enum lustre_som_flags lsf;
2274 if (ma->ma_attr.la_valid & (LA_SIZE | LA_BLOCKS))
2275 lsf = SOM_FL_STRICT;
2279 mutex_lock(&o->mot_som_mutex);
2280 rc2 = mdt_set_som(info, o, lsf,
2281 ma->ma_attr.la_size,
2282 ma->ma_attr.la_blocks);
2283 mutex_unlock(&o->mot_som_mutex);
2285 CERROR(DFID": Setting i_blocks error: %d, "
2286 "i_blocks will be reported wrongly and "
2287 "can only be fixed in next resync\n",
2288 PFID(mdt_object_fid(o)), rc2);
2292 GOTO(out_unlock2, rc);
2297 /* Release exclusive LL */
2299 mdt_object_unlock(info, o2, lh2, 1);
2302 mdt_object_unlock(info, o1, lh1, 1);
2305 up_write(&o->mot_open_sem);
2307 /* already swapped */
2309 struct mdt_body *repbody;
2311 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2312 LASSERT(repbody != NULL);
2313 repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED;
2318 /* the 2nd object has been used, and swapped to o1 */
2319 mdt_object_put(info->mti_env, o1);
2321 /* the 2nd object has been used, and not swapped */
2322 mdt_object_put(info->mti_env, o2);
2324 ldlm_reprocess_all(lease->l_resource,
2325 lease->l_policy_data.l_inodebits.bits);
2328 LDLM_LOCK_PUT(lease);
2338 static int mdt_close_resync_done(struct mdt_thread_info *info,
2339 struct mdt_object *o, struct md_attr *ma)
2341 struct mdt_lock_handle *lhc = &info->mti_lh[MDT_LH_LOCAL];
2342 struct close_data *data;
2343 struct ldlm_lock *lease;
2344 struct md_layout_change layout = { 0 };
2345 __u32 *resync_ids = NULL;
2346 size_t resync_count = 0;
2351 if (exp_connect_flags(info->mti_exp) & OBD_CONNECT_RDONLY)
2354 if (!S_ISREG(lu_object_attr(&o->mot_obj)))
2357 data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
2361 if (req_capsule_req_need_swab(info->mti_pill))
2362 lustre_swab_close_data_resync_done(&data->cd_resync);
2364 if (!fid_is_zero(&data->cd_fid))
2367 lease = ldlm_handle2lock(&data->cd_handle);
2371 /* try to hold open_sem so that nobody else can open the file */
2372 if (!down_write_trylock(&o->mot_open_sem)) {
2373 ldlm_lock_cancel(lease);
2374 GOTO(out_reprocess, rc = -EBUSY);
2377 /* Check if the lease open lease has already canceled */
2378 lock_res_and_lock(lease);
2379 lease_broken = ldlm_is_cancel(lease);
2380 unlock_res_and_lock(lease);
2382 LDLM_DEBUG(lease, DFID " lease broken? %d",
2383 PFID(mdt_object_fid(o)), lease_broken);
2385 /* Cancel server side lease. Client side counterpart should
2386 * have been cancelled. It's okay to cancel it now as we've
2387 * held mot_open_sem. */
2388 ldlm_lock_cancel(lease);
2390 if (lease_broken) /* don't perform release task */
2391 GOTO(out_unlock, rc = -ESTALE);
2393 resync_count = data->cd_resync.resync_count;
2395 if (resync_count > INLINE_RESYNC_ARRAY_SIZE) {
2398 if (!req_capsule_has_field(info->mti_pill, &RMF_U32,
2400 GOTO(out_unlock, rc = -EPROTO);
2402 OBD_ALLOC_PTR_ARRAY(resync_ids, resync_count);
2404 GOTO(out_unlock, rc = -ENOMEM);
2406 data = req_capsule_client_get(info->mti_pill, &RMF_U32);
2407 memcpy(resync_ids, data, resync_count * sizeof(__u32));
2409 layout.mlc_resync_ids = resync_ids;
2411 layout.mlc_resync_ids = data->cd_resync.resync_ids_inline;
2414 layout.mlc_opc = MD_LAYOUT_RESYNC_DONE;
2415 layout.mlc_resync_count = resync_count;
2416 if (ma->ma_attr.la_valid & (LA_SIZE | LA_BLOCKS)) {
2417 layout.mlc_som.lsa_valid = SOM_FL_STRICT;
2418 layout.mlc_som.lsa_size = ma->ma_attr.la_size;
2419 layout.mlc_som.lsa_blocks = ma->ma_attr.la_blocks;
2421 rc = mdt_layout_change(info, o, lhc, &layout);
2423 GOTO(out_unlock, rc);
2425 mdt_object_unlock(info, o, lhc, 0);
2430 up_write(&o->mot_open_sem);
2432 /* already released */
2434 struct mdt_body *repbody;
2436 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2437 LASSERT(repbody != NULL);
2438 repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED;
2442 OBD_FREE_PTR_ARRAY(resync_ids, resync_count);
2445 ldlm_reprocess_all(lease->l_resource,
2446 lease->l_policy_data.l_inodebits.bits);
2447 LDLM_LOCK_PUT(lease);
2455 #define MFD_CLOSED(open_flags) ((open_flags) == MDS_FMODE_CLOSED)
2457 static int mdt_mfd_closed(struct mdt_file_data *mfd)
2459 return ((mfd == NULL) || MFD_CLOSED(mfd->mfd_open_flags));
2462 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd)
2464 struct mdt_object *o = mfd->mfd_object;
2465 struct md_object *next = mdt_object_child(o);
2466 struct md_attr *ma = &info->mti_attr;
2467 struct lu_fid *ofid = &info->mti_tmp_fid1;
2474 open_flags = mfd->mfd_open_flags;
2475 intent = ma->ma_attr_flags & MDS_CLOSE_INTENT;
2476 *ofid = *mdt_object_fid(o);
2478 /* the below message is checked in replay-single.sh test_46 */
2479 CDEBUG(D_INODE, "%s: %sclosing file handle "DFID" with intent: %llx\n",
2480 mdt_obd_name(info->mti_mdt),
2481 ma->ma_valid & MA_FORCE_LOG ? "force " : "", PFID(ofid), intent);
2484 case MDS_HSM_RELEASE: {
2485 rc = mdt_hsm_release(info, o, ma);
2487 CDEBUG(D_HSM, "%s: File " DFID " release failed: %d\n",
2488 mdt_obd_name(info->mti_mdt),
2490 /* continue to close even error occurred. */
2494 case MDS_CLOSE_LAYOUT_MERGE:
2495 case MDS_CLOSE_LAYOUT_SPLIT:
2496 case MDS_CLOSE_LAYOUT_SWAP: {
2497 rc = mdt_close_handle_layouts(info, o, ma);
2500 "%s: cannot %s layout of "DFID": rc = %d\n",
2501 mdt_obd_name(info->mti_mdt),
2502 intent == MDS_CLOSE_LAYOUT_MERGE ? "merge" :
2503 intent == MDS_CLOSE_LAYOUT_SPLIT ? "split" :
2506 /* continue to close even if error occurred. */
2510 case MDS_CLOSE_RESYNC_DONE:
2511 rc = mdt_close_resync_done(info, o, ma);
2514 "%s: cannot resync layout of "DFID": rc = %d\n",
2515 mdt_obd_name(info->mti_mdt),
2517 /* continue to close even if error occurred. */
2525 if (S_ISREG(lu_object_attr(&o->mot_obj)) &&
2526 ma->ma_attr.la_valid & (LA_LSIZE | LA_LBLOCKS)) {
2527 rc2 = mdt_lsom_update(info, o, false);
2530 "%s: File " DFID " LSOM failed: rc = %d\n",
2531 mdt_obd_name(info->mti_mdt),
2535 /* continue to close even if error occurred. */
2539 if (open_flags & MDS_FMODE_WRITE)
2541 else if (open_flags & MDS_FMODE_EXEC)
2544 /* Update atime|mtime|ctime on close. */
2545 if ((open_flags & MDS_FMODE_EXEC || open_flags & MDS_FMODE_READ ||
2546 open_flags & MDS_FMODE_WRITE) && (ma->ma_valid & MA_INODE) &&
2547 (ma->ma_attr.la_valid & LA_ATIME ||
2548 ma->ma_attr.la_valid & LA_MTIME ||
2549 ma->ma_attr.la_valid & LA_CTIME)) {
2550 ma->ma_valid = MA_INODE;
2551 ma->ma_attr_flags |= MDS_CLOSE_UPDATE_TIMES;
2552 ma->ma_attr.la_valid &= (LA_ATIME | LA_MTIME | LA_CTIME);
2554 if (ma->ma_attr.la_valid & LA_MTIME) {
2555 if (mdt_attr_get_pfid(info, o, &ma->ma_pfid) == 0)
2556 ma->ma_valid |= MA_PFID;
2559 rc2 = mo_attr_set(info->mti_env, next, ma);
2562 "%s: File "DFID" set attr (%#llx) failed: rc = %d\n",
2563 mdt_obd_name(info->mti_mdt), PFID(ofid),
2564 ma->ma_attr.la_valid, rc2);
2570 /* If file data is modified, add the dirty flag. */
2571 if (ma->ma_attr_flags & MDS_DATA_MODIFIED) {
2572 rc2 = mdt_add_dirty_flag(info, o, ma);
2575 "%s: File "DFID" add dirty flag failed: rc = %d\n",
2576 mdt_obd_name(info->mti_mdt), PFID(ofid), rc2);
2582 ma->ma_need |= MA_INODE;
2583 ma->ma_valid &= ~MA_INODE;
2585 LASSERT(atomic_read(&o->mot_open_count) > 0);
2586 atomic_dec(&o->mot_open_count);
2587 mdt_handle_last_unlink(info, o, ma);
2589 if (!MFD_CLOSED(open_flags)) {
2590 rc2 = mo_close(info->mti_env, next, ma, open_flags);
2593 "%s: File "DFID" close failed: rc = %d\n",
2594 mdt_obd_name(info->mti_mdt), PFID(ofid), rc2);
2598 if (mdt_dom_check_for_discard(info, o))
2599 mdt_dom_discard_data(info, o);
2602 /* adjust open and lease count */
2603 if (open_flags & MDS_OPEN_LEASE) {
2604 LASSERT(atomic_read(&o->mot_lease_count) > 0);
2605 atomic_dec(&o->mot_lease_count);
2609 mdt_object_put(info->mti_env, o);
2614 int mdt_close_internal(struct mdt_thread_info *info, struct ptlrpc_request *req,
2615 struct mdt_body *repbody)
2617 struct mdt_export_data *med;
2618 struct mdt_file_data *mfd;
2623 med = &req->rq_export->exp_mdt_data;
2624 spin_lock(&med->med_open_lock);
2625 mfd = mdt_open_handle2mfd(med, &info->mti_open_handle,
2626 req_is_replay(req));
2627 if (mdt_mfd_closed(mfd)) {
2628 spin_unlock(&med->med_open_lock);
2629 CDEBUG(D_INODE, "no handle for file close: fid = "DFID
2630 ": cookie = %#llx\n", PFID(info->mti_rr.rr_fid1),
2631 info->mti_open_handle.cookie);
2632 /** not serious error since bug 3633 */
2635 class_handle_unhash(&mfd->mfd_open_handle);
2636 list_del_init(&mfd->mfd_list);
2637 spin_unlock(&med->med_open_lock);
2638 ret = mdt_mfd_close(info, mfd);
2641 RETURN(rc ? rc : ret);
2644 int mdt_close(struct tgt_session_info *tsi)
2646 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2647 struct ptlrpc_request *req = tgt_ses_req(tsi);
2648 struct md_attr *ma = &info->mti_attr;
2649 struct mdt_body *repbody = NULL;
2650 ktime_t kstart = ktime_get();
2655 /* Close may come with the Size-on-MDS update. Unpack it. */
2656 rc = mdt_close_unpack(info);
2658 GOTO(out, rc = err_serious(rc));
2660 /* These fields are no longer used and are left for compatibility.
2661 * size is always zero */
2662 req_capsule_set_size(info->mti_pill, &RMF_MDT_MD, RCL_SERVER,
2664 req_capsule_set_size(info->mti_pill, &RMF_LOGCOOKIES, RCL_SERVER,
2666 rc = req_capsule_server_pack(info->mti_pill);
2667 if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) {
2668 mdt_client_compatibility(info);
2670 mdt_fix_reply(info);
2671 mdt_exit_ucred(info);
2672 GOTO(out, rc = lustre_msg_get_status(req->rq_repmsg));
2675 /* Continue to close handle even if we can not pack reply */
2677 repbody = req_capsule_server_get(info->mti_pill,
2679 ma->ma_lmm = req_capsule_server_get(info->mti_pill,
2681 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
2684 ma->ma_need = MA_INODE | MA_LOV;
2685 repbody->mbo_eadatasize = 0;
2686 repbody->mbo_aclsize = 0;
2688 rc = err_serious(rc);
2691 rc2 = mdt_close_internal(info, req, repbody);
2693 mdt_empty_transno(info, rc2);
2694 if (rc2 != 0 && rc == 0)
2697 if (repbody != NULL) {
2698 mdt_client_compatibility(info);
2699 rc2 = mdt_fix_reply(info);
2700 if (rc2 != 0 && rc == 0)
2704 mdt_exit_ucred(info);
2705 if (CFS_FAIL_CHECK(OBD_FAIL_MDS_CLOSE_PACK))
2706 GOTO(out, rc = err_serious(-ENOMEM));
2708 if (CFS_FAIL_CHECK_RESET(OBD_FAIL_MDS_CLOSE_NET_REP,
2709 OBD_FAIL_MDS_CLOSE_NET_REP))
2710 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_CLOSE_NET_REP;
2712 mdt_thread_info_fini(info);
2714 mdt_counter_incr(req, LPROC_MDT_CLOSE,
2715 ktime_us_delta(ktime_get(), kstart));