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/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/mdt/mdt_open.c
34 * Lustre Metadata Target (mdt) open/close file handling
36 * Author: Huang Hua <huanghua@clusterfs.com>
39 #define DEBUG_SUBSYSTEM S_MDS
41 #include <lustre_acl.h>
42 #include <lustre_mds.h>
43 #include <lustre_swab.h>
44 #include "mdt_internal.h"
45 #include <lustre_nodemap.h>
47 /* we do nothing because we do not have refcount now */
48 static void mdt_mfd_get(void *mfdp)
52 static struct portals_handle_ops mfd_handle_ops = {
53 .hop_addref = mdt_mfd_get,
57 /* Create a new mdt_file_data struct, initialize it,
58 * and insert it to global hash table */
59 struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med)
61 struct mdt_file_data *mfd;
66 INIT_LIST_HEAD(&mfd->mfd_handle.h_link);
67 mfd->mfd_handle.h_owner = med;
68 INIT_LIST_HEAD(&mfd->mfd_list);
69 class_handle_hash(&mfd->mfd_handle, &mfd_handle_ops);
76 * Find the mfd pointed to by handle in global hash table.
77 * In case of replay the handle is obsoleted
78 * but mfd can be found in mfd list by that handle.
79 * Callers need to be holding med_open_lock.
81 struct mdt_file_data *mdt_handle2mfd(struct mdt_export_data *med,
82 const struct lustre_handle *handle,
83 bool is_replay_or_resent)
85 struct mdt_file_data *mfd;
88 LASSERT(handle != NULL);
89 mfd = class_handle2object(handle->cookie, med);
90 /* during dw/setattr replay the mfd can be found by old handle */
91 if (mfd == NULL && is_replay_or_resent) {
92 list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
93 if (mfd->mfd_old_handle.cookie == handle->cookie)
103 void mdt_mfd_free(struct mdt_file_data *mfd)
105 LASSERT(list_empty(&mfd->mfd_list));
106 OBD_FREE_RCU(mfd, sizeof *mfd, &mfd->mfd_handle);
109 static int mdt_create_data(struct mdt_thread_info *info,
110 struct mdt_object *p, struct mdt_object *o)
112 struct md_op_spec *spec = &info->mti_spec;
113 struct md_attr *ma = &info->mti_attr;
117 if (!md_should_create(spec->sp_cr_flags))
120 ma->ma_need = MA_INODE | MA_LOV;
122 mutex_lock(&o->mot_lov_mutex);
123 if (!o->mot_lov_created) {
124 rc = mdo_create_data(info->mti_env,
125 p ? mdt_object_child(p) : NULL,
126 mdt_object_child(o), spec, ma);
128 rc = mdt_attr_get_complex(info, o, ma);
130 if (rc == 0 && ma->ma_valid & MA_LOV)
131 o->mot_lov_created = 1;
134 mutex_unlock(&o->mot_lov_mutex);
138 int mdt_write_read(struct mdt_object *o)
142 spin_lock(&o->mot_write_lock);
143 rc = o->mot_write_count;
144 spin_unlock(&o->mot_write_lock);
148 int mdt_write_get(struct mdt_object *o)
152 spin_lock(&o->mot_write_lock);
153 if (o->mot_write_count < 0)
156 o->mot_write_count++;
157 spin_unlock(&o->mot_write_lock);
162 void mdt_write_put(struct mdt_object *o)
165 spin_lock(&o->mot_write_lock);
166 o->mot_write_count--;
167 spin_unlock(&o->mot_write_lock);
171 static int mdt_write_deny(struct mdt_object *o)
175 spin_lock(&o->mot_write_lock);
176 if (o->mot_write_count > 0)
179 o->mot_write_count--;
180 spin_unlock(&o->mot_write_lock);
184 static void mdt_write_allow(struct mdt_object *o)
187 spin_lock(&o->mot_write_lock);
188 o->mot_write_count++;
189 spin_unlock(&o->mot_write_lock);
193 /* there can be no real transaction so prepare the fake one */
194 static void mdt_empty_transno(struct mdt_thread_info *info, int rc)
196 struct mdt_device *mdt = info->mti_mdt;
197 struct ptlrpc_request *req = mdt_info_req(info);
198 struct tg_export_data *ted;
199 struct lsd_client_data *lcd;
202 if (mdt_rdonly(req->rq_export))
205 /* transaction has occurred already */
206 if (lustre_msg_get_transno(req->rq_repmsg) != 0)
209 if (tgt_is_multimodrpcs_client(req->rq_export)) {
212 /* generate an empty transaction to get a transno
214 th = dt_trans_create(info->mti_env, mdt->mdt_bottom);
216 rc = dt_trans_start(info->mti_env, mdt->mdt_bottom, th);
217 dt_trans_stop(info->mti_env, mdt->mdt_bottom, th);
222 spin_lock(&mdt->mdt_lut.lut_translock);
224 if (info->mti_transno != 0) {
225 struct obd_export *exp = req->rq_export;
227 CERROR("%s: replay trans %llu NID %s: rc = %d\n",
228 mdt_obd_name(mdt), info->mti_transno,
229 obd_export_nid2str(exp), rc);
230 spin_unlock(&mdt->mdt_lut.lut_translock);
233 } else if (info->mti_transno == 0) {
234 info->mti_transno = ++mdt->mdt_lut.lut_last_transno;
236 /* should be replay */
237 if (info->mti_transno > mdt->mdt_lut.lut_last_transno)
238 mdt->mdt_lut.lut_last_transno = info->mti_transno;
240 spin_unlock(&mdt->mdt_lut.lut_translock);
242 CDEBUG(D_INODE, "transno = %llu, last_committed = %llu\n",
244 req->rq_export->exp_obd->obd_last_committed);
246 req->rq_transno = info->mti_transno;
247 lustre_msg_set_transno(req->rq_repmsg, info->mti_transno);
249 /* update lcd in memory only for resent cases */
250 ted = &req->rq_export->exp_target_data;
252 mutex_lock(&ted->ted_lcd_lock);
254 if (info->mti_transno < lcd->lcd_last_transno &&
255 info->mti_transno != 0) {
256 /* This should happen during replay. Do not update
257 * last rcvd info if replay req transno < last transno,
258 * otherwise the following resend(after replay) can not
259 * be checked correctly by xid */
260 mutex_unlock(&ted->ted_lcd_lock);
261 CDEBUG(D_HA, "%s: transno = %llu < last_transno = %llu\n",
262 mdt_obd_name(mdt), info->mti_transno,
263 lcd->lcd_last_transno);
267 if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE) {
268 if (info->mti_transno != 0)
269 lcd->lcd_last_close_transno = info->mti_transno;
270 lcd->lcd_last_close_xid = req->rq_xid;
271 lcd->lcd_last_close_result = rc;
273 /* VBR: save versions in last_rcvd for reconstruct. */
274 __u64 *pre_versions = lustre_msg_get_versions(req->rq_repmsg);
276 lcd->lcd_pre_versions[0] = pre_versions[0];
277 lcd->lcd_pre_versions[1] = pre_versions[1];
278 lcd->lcd_pre_versions[2] = pre_versions[2];
279 lcd->lcd_pre_versions[3] = pre_versions[3];
281 if (info->mti_transno != 0)
282 lcd->lcd_last_transno = info->mti_transno;
284 lcd->lcd_last_xid = req->rq_xid;
285 lcd->lcd_last_result = rc;
286 lcd->lcd_last_data = info->mti_opdata;
288 mutex_unlock(&ted->ted_lcd_lock);
293 void mdt_mfd_set_mode(struct mdt_file_data *mfd, __u64 mode)
295 LASSERT(mfd != NULL);
297 CDEBUG(D_DENTRY, DFID " Change mfd mode %#llo -> %#llo.\n",
298 PFID(mdt_object_fid(mfd->mfd_object)), mfd->mfd_mode, mode);
300 mfd->mfd_mode = mode;
304 * prep ma_lmm/ma_lmv for md_attr from reply
306 static void mdt_prep_ma_buf_from_rep(struct mdt_thread_info *info,
307 struct mdt_object *obj,
310 LASSERT(ma->ma_lmv == NULL && ma->ma_lmm == NULL);
311 if (S_ISDIR(obj->mot_header.loh_attr)) {
312 ma->ma_lmv = req_capsule_server_get(info->mti_pill,
314 ma->ma_lmv_size = req_capsule_get_size(info->mti_pill,
317 if (ma->ma_lmv_size > 0)
318 ma->ma_need |= MA_LMV;
320 ma->ma_lmm = req_capsule_server_get(info->mti_pill,
322 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
325 if (ma->ma_lmm_size > 0)
326 ma->ma_need |= MA_LOV;
330 static int mdt_mfd_open(struct mdt_thread_info *info, struct mdt_object *p,
331 struct mdt_object *o, __u64 flags, int created,
332 struct ldlm_reply *rep)
334 struct ptlrpc_request *req = mdt_info_req(info);
335 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
336 struct mdt_file_data *mfd;
337 struct md_attr *ma = &info->mti_attr;
338 struct lu_attr *la = &ma->ma_attr;
339 struct mdt_body *repbody;
340 int rc = 0, isdir, isreg;
343 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
345 isreg = S_ISREG(la->la_mode);
346 isdir = S_ISDIR(la->la_mode);
347 if (isreg && !(ma->ma_valid & MA_LOV) && !(flags & MDS_OPEN_RELEASE)) {
349 * No EA, check whether it is will set regEA and dirEA since in
350 * above attr get, these size might be zero, so reset it, to
351 * retrieve the MD after create obj.
353 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
356 /* in replay case, p == NULL */
357 rc = mdt_create_data(info, p, o);
361 if (exp_connect_flags(req->rq_export) & OBD_CONNECT_DISP_STRIPE)
362 mdt_set_disposition(info, rep, DISP_OPEN_STRIPE);
365 CDEBUG(D_INODE, "after open, ma_valid bit = %#llx lmm_size = %d\n",
366 ma->ma_valid, ma->ma_lmm_size);
368 if (ma->ma_valid & MA_LOV) {
369 LASSERT(ma->ma_lmm_size != 0);
370 repbody->mbo_eadatasize = ma->ma_lmm_size;
372 repbody->mbo_valid |= OBD_MD_FLDIREA;
374 repbody->mbo_valid |= OBD_MD_FLEASIZE;
377 if (ma->ma_valid & MA_LMV) {
378 LASSERT(ma->ma_lmv_size != 0);
379 repbody->mbo_eadatasize = ma->ma_lmv_size;
381 repbody->mbo_valid |= OBD_MD_FLDIREA | OBD_MD_MEA;
384 if (flags & MDS_FMODE_WRITE)
385 rc = mdt_write_get(o);
386 else if (flags & MDS_FMODE_EXEC)
387 rc = mdt_write_deny(o);
392 rc = mo_open(info->mti_env, mdt_object_child(o),
393 created ? flags | MDS_OPEN_CREATED : flags);
395 /* If we allow the client to chgrp (CFS_SETGRP_PERM), but the
396 * client does not know which suppgid should be sent to the MDS,
397 * or some other(s) changed the target file's GID after this RPC
398 * sent to the MDS with the suppgid as the original GID, then we
399 * give the client another chance to send the right suppgid. */
401 allow_client_chgrp(info, lu_ucred(info->mti_env)))
402 mdt_set_disposition(info, rep, DISP_OPEN_DENY);
407 mfd = mdt_mfd_new(med);
409 GOTO(err_out, rc = -ENOMEM);
412 * Keep a reference on this object for this open, and is
413 * released by mdt_mfd_close().
415 mdt_object_get(info->mti_env, o);
417 mfd->mfd_xid = req->rq_xid;
420 * @flags is always not zero. At least it should be FMODE_READ,
421 * FMODE_WRITE or MDS_FMODE_EXEC.
426 mdt_mfd_set_mode(mfd, flags);
428 atomic_inc(&o->mot_open_count);
429 if (flags & MDS_OPEN_LEASE)
430 atomic_inc(&o->mot_lease_count);
433 if (req_is_replay(req)) {
434 struct mdt_file_data *old_mfd;
435 /* Check wheather old cookie already exist in
436 * the list, becasue when do recovery, client
437 * might be disconnected from server, and
438 * restart replay, so there maybe some orphan
439 * mfd here, we should remove them */
440 LASSERT(info->mti_rr.rr_handle != NULL);
441 spin_lock(&med->med_open_lock);
442 old_mfd = mdt_handle2mfd(med, info->mti_rr.rr_handle, true);
443 if (old_mfd != NULL) {
444 CDEBUG(D_HA, "delete orphan mfd = %p, fid = "DFID", "
445 "cookie = %#llx\n", mfd,
446 PFID(mdt_object_fid(mfd->mfd_object)),
447 info->mti_rr.rr_handle->cookie);
448 class_handle_unhash(&old_mfd->mfd_handle);
449 list_del_init(&old_mfd->mfd_list);
450 spin_unlock(&med->med_open_lock);
451 /* no attr update for that close */
453 ma->ma_valid |= MA_FLAGS;
454 ma->ma_attr_flags |= MDS_RECOV_OPEN;
455 mdt_mfd_close(info, old_mfd);
456 ma->ma_attr_flags &= ~MDS_RECOV_OPEN;
457 ma->ma_valid &= ~MA_FLAGS;
459 spin_unlock(&med->med_open_lock);
460 CDEBUG(D_HA, "orphan mfd not found, fid = "DFID", "
462 PFID(mdt_object_fid(mfd->mfd_object)),
463 info->mti_rr.rr_handle->cookie);
466 CDEBUG(D_HA, "Store old cookie %#llx in new mfd\n",
467 info->mti_rr.rr_handle->cookie);
469 mfd->mfd_old_handle.cookie = info->mti_rr.rr_handle->cookie;
472 repbody->mbo_handle.cookie = mfd->mfd_handle.h_cookie;
474 if (req->rq_export->exp_disconnected) {
475 spin_lock(&med->med_open_lock);
476 class_handle_unhash(&mfd->mfd_handle);
477 list_del_init(&mfd->mfd_list);
478 spin_unlock(&med->med_open_lock);
479 mdt_mfd_close(info, mfd);
481 spin_lock(&med->med_open_lock);
482 list_add_tail(&mfd->mfd_list, &med->med_open_head);
483 spin_unlock(&med->med_open_lock);
486 mdt_empty_transno(info, rc);
491 if (flags & MDS_FMODE_WRITE)
493 else if (flags & MDS_FMODE_EXEC)
499 static int mdt_finish_open(struct mdt_thread_info *info,
500 struct mdt_object *p, struct mdt_object *o,
501 __u64 flags, int created, struct ldlm_reply *rep)
503 struct ptlrpc_request *req = mdt_info_req(info);
504 struct obd_export *exp = req->rq_export;
505 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
506 struct md_attr *ma = &info->mti_attr;
507 struct lu_attr *la = &ma->ma_attr;
508 struct mdt_file_data *mfd;
509 struct mdt_body *repbody;
511 int isreg, isdir, islnk;
515 LASSERT(ma->ma_valid & MA_INODE);
517 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
519 isreg = S_ISREG(la->la_mode);
520 isdir = S_ISDIR(la->la_mode);
521 islnk = S_ISLNK(la->la_mode);
522 mdt_pack_attr2body(info, repbody, la, mdt_object_fid(o));
524 /* compatibility check for 2.10 clients when it tries to open mirrored
525 * files. 2.10 clients don't verify overlapping components so they
526 * would read and write mirrored files just as if they were normal
527 * PFL files, which will cause the problem that sycned mirrors actually
528 * contain different data.
529 * Older clients are not a concern here because they don't even
530 * understand PFL layout. */
531 if (isreg && !exp_connect_flr(exp) && ma->ma_valid & MA_LOV &&
532 mdt_lmm_is_flr(ma->ma_lmm)) {
533 /* LU-10286: for simplicity clients who don't understand
534 * mirrored layout(with connect flag OBD_CONNECT2_FLR) won't
535 * be able to open mirrored files */
539 /* LU-2275, simulate broken behaviour (esp. prevalent in
540 * pre-2.4 servers where a very strange reply is sent on error
541 * that looks like it was actually almost successful and a
542 * failure at the same time.) */
543 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_NEGATIVE_POSITIVE)) {
544 mdt_set_disposition(info, rep, DISP_OPEN_OPEN |
548 if (flags & MDS_OPEN_LOCK)
549 mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
554 #ifdef CONFIG_FS_POSIX_ACL
555 if (exp_connect_flags(exp) & OBD_CONNECT_ACL) {
556 struct lu_nodemap *nodemap = nodemap_get_from_exp(exp);
558 RETURN(PTR_ERR(nodemap));
560 rc = mdt_pack_acl2body(info, repbody, o, nodemap);
561 nodemap_putref(nodemap);
568 * If we are following a symlink, don't open; and do not return open
569 * handle for special nodes as client required.
571 if (islnk || (!isreg && !isdir &&
572 (exp_connect_flags(req->rq_export) & OBD_CONNECT_NODEVOH))) {
573 lustre_msg_set_transno(req->rq_repmsg, 0);
578 * We need to return the existing object's fid back, so it is done here,
579 * after preparing the reply.
581 if (!created && (flags & MDS_OPEN_EXCL) && (flags & MDS_OPEN_CREAT))
584 /* This can't be done earlier, we need to return reply body */
586 if (flags & (MDS_OPEN_CREAT | MDS_FMODE_WRITE)) {
587 /* We are trying to create or write an existing dir. */
590 } else if (flags & MDS_OPEN_DIRECTORY)
593 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_OPEN_CREATE,
594 OBD_FAIL_LDLM_REPLY | OBD_FAIL_ONCE)) {
599 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
600 spin_lock(&med->med_open_lock);
601 list_for_each(t, &med->med_open_head) {
602 mfd = list_entry(t, struct mdt_file_data, mfd_list);
603 if (mfd->mfd_xid == req->rq_xid)
607 spin_unlock(&med->med_open_lock);
610 repbody->mbo_handle.cookie = mfd->mfd_handle.h_cookie;
611 /* set repbody->ea_size for resent case */
612 if (ma->ma_valid & MA_LOV) {
613 LASSERT(ma->ma_lmm_size != 0);
614 repbody->mbo_eadatasize = ma->ma_lmm_size;
616 repbody->mbo_valid |= OBD_MD_FLDIREA;
618 repbody->mbo_valid |= OBD_MD_FLEASIZE;
620 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
625 rc = mdt_mfd_open(info, p, o, flags, created, rep);
627 mdt_set_disposition(info, rep, DISP_OPEN_OPEN);
632 void mdt_reconstruct_open(struct mdt_thread_info *info,
633 struct mdt_lock_handle *lhc)
635 const struct lu_env *env = info->mti_env;
636 struct mdt_device *mdt = info->mti_mdt;
637 struct req_capsule *pill = info->mti_pill;
638 struct ptlrpc_request *req = mdt_info_req(info);
639 struct md_attr *ma = &info->mti_attr;
640 struct mdt_reint_record *rr = &info->mti_rr;
641 __u64 flags = info->mti_spec.sp_cr_flags;
642 struct ldlm_reply *ldlm_rep;
643 struct mdt_object *parent;
644 struct mdt_object *child;
645 struct mdt_body *repbody;
650 LASSERT(pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
651 ldlm_rep = req_capsule_server_get(pill, &RMF_DLM_REP);
652 repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
654 ma->ma_need = MA_INODE | MA_HSM;
657 opdata = mdt_req_from_lrd(req, info->mti_reply_data);
658 mdt_set_disposition(info, ldlm_rep, opdata);
660 CDEBUG(D_INODE, "This is reconstruct open: disp=%#llx, result=%d\n",
661 ldlm_rep->lock_policy_res1, req->rq_status);
663 if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE) &&
665 /* We did not create successfully, return error to client. */
666 GOTO(out, rc = req->rq_status);
668 if (mdt_get_disposition(ldlm_rep, DISP_OPEN_CREATE)) {
669 struct obd_export *exp = req->rq_export;
671 * We failed after creation, but we do not know in which step
672 * we failed. So try to check the child object.
674 parent = mdt_object_find(env, mdt, rr->rr_fid1);
675 if (IS_ERR(parent)) {
676 rc = PTR_ERR(parent);
677 LCONSOLE_WARN("Parent "DFID" lookup error %d."
678 " Evicting client %s with export %s.\n",
679 PFID(rr->rr_fid1), rc,
680 obd_uuid2str(&exp->exp_client_uuid),
681 obd_export_nid2str(exp));
682 mdt_export_evict(exp);
686 child = mdt_object_find(env, mdt, rr->rr_fid2);
689 LCONSOLE_WARN("cannot lookup child "DFID": rc = %d; "
690 "evicting client %s with export %s\n",
691 PFID(rr->rr_fid2), rc,
692 obd_uuid2str(&exp->exp_client_uuid),
693 obd_export_nid2str(exp));
694 mdt_object_put(env, parent);
695 mdt_export_evict(exp);
699 if (unlikely(mdt_object_remote(child))) {
700 /* the child object was created on remote server */
701 if (!mdt_is_dne_client(exp)) {
702 /* Return -EIO for old client */
703 mdt_object_put(env, parent);
704 mdt_object_put(env, child);
705 GOTO(out, rc = -EIO);
707 repbody->mbo_fid1 = *rr->rr_fid2;
708 repbody->mbo_valid |= (OBD_MD_FLID | OBD_MD_MDS);
711 if (mdt_object_exists(child)) {
712 mdt_prep_ma_buf_from_rep(info, child, ma);
713 rc = mdt_attr_get_complex(info, child, ma);
715 rc = mdt_finish_open(info, parent,
719 /* the child does not exist, we should do
721 mdt_object_put(env, parent);
722 mdt_object_put(env, child);
723 GOTO(regular_open, 0);
726 mdt_object_put(env, parent);
727 mdt_object_put(env, child);
731 /* We did not try to create, so we are a pure open */
732 rc = mdt_reint_open(info, lhc);
738 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
739 LASSERT(ergo(rc < 0, lustre_msg_get_transno(req->rq_repmsg) == 0));
742 static int mdt_open_by_fid(struct mdt_thread_info *info, struct ldlm_reply *rep)
744 __u64 flags = info->mti_spec.sp_cr_flags;
745 struct mdt_reint_record *rr = &info->mti_rr;
746 struct md_attr *ma = &info->mti_attr;
747 struct mdt_object *o;
751 o = mdt_object_find(info->mti_env, info->mti_mdt, rr->rr_fid2);
753 RETURN(rc = PTR_ERR(o));
755 if (unlikely(mdt_object_remote(o))) {
756 /* the child object was created on remote server */
757 struct mdt_body *repbody;
759 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
762 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
763 repbody->mbo_fid1 = *rr->rr_fid2;
764 repbody->mbo_valid |= (OBD_MD_FLID | OBD_MD_MDS);
767 if (mdt_object_exists(o)) {
768 mdt_set_disposition(info, rep, (DISP_IT_EXECD |
771 mdt_prep_ma_buf_from_rep(info, o, ma);
772 rc = mdt_attr_get_complex(info, o, ma);
774 rc = mdt_finish_open(info, NULL, o, flags, 0,
781 mdt_object_put(info->mti_env, o);
785 /* lock object for open */
786 static int mdt_object_open_lock(struct mdt_thread_info *info,
787 struct mdt_object *obj,
788 struct mdt_lock_handle *lhc,
791 struct md_attr *ma = &info->mti_attr;
792 __u64 open_flags = info->mti_spec.sp_cr_flags;
794 enum ldlm_mode lm = LCK_CR;
795 bool acq_lease = !!(open_flags & MDS_OPEN_LEASE);
796 bool try_layout = false;
797 bool create_layout = false;
799 int dom_stripes = LMM_NO_DOM;
800 bool dom_lock = false;
805 mdt_lock_handle_init(lhc);
807 if (req_is_replay(mdt_info_req(info)))
810 if (S_ISREG(lu_object_attr(&obj->mot_obj))) {
811 if (ma->ma_need & MA_LOV && !(ma->ma_valid & MA_LOV) &&
812 md_should_create(open_flags))
813 create_layout = true;
814 if (exp_connect_layout(info->mti_exp) && !create_layout &&
815 ma->ma_need & MA_LOV)
818 /* DoM files can have just MDT stripe or combined MDT + OST
820 * - In the first case the open for read/write will do IO to
821 * the MDT stripe and it makes sense to take IO lock in
822 * advance along with OPEN even if it is blocking lock.
823 * - In the second case it is just size of MDT stripe and it
824 * is quite unlikely that client will write into it, though
825 * it may read it. So IO lock will be taken optionally if it
826 * is non-blocking one.
828 if (ma->ma_valid & MA_LOV && ma->ma_lmm != NULL)
829 dom_stripes = mdt_lmm_dom_entry(ma->ma_lmm);
831 if (dom_stripes == LMM_DOM_ONLY &&
832 info->mti_mdt->mdt_opts.mo_dom_lock > 0 &&
833 !mdt_dom_client_has_lock(info, mdt_object_fid(obj)))
838 /* lease open, acquire write mode of open sem */
839 down_write(&obj->mot_open_sem);
841 /* Lease exists and ask for new lease */
842 if (atomic_read(&obj->mot_lease_count) > 0) {
843 /* only exclusive open is supported, so lease
844 * are conflicted to each other */
845 GOTO(out, rc = -EBUSY);
848 /* Lease must be with open lock */
849 if (!(open_flags & MDS_OPEN_LOCK)) {
850 CERROR("%s: Request lease for file:"DFID ", but open lock "
851 "is missed, open_flags = %#llo : rc = %d\n",
852 mdt_obd_name(info->mti_mdt),
853 PFID(mdt_object_fid(obj)), open_flags, -EPROTO);
854 GOTO(out, rc = -EPROTO);
857 /* XXX: only exclusive open is supported. */
859 *ibits = MDS_INODELOCK_OPEN;
861 /* never grant LCK_EX layout lock to client */
863 } else { /* normal open */
864 /* normal open holds read mode of open sem */
865 down_read(&obj->mot_open_sem);
867 if (open_flags & MDS_OPEN_LOCK) {
868 if (open_flags & MDS_FMODE_WRITE)
870 else if (open_flags & MDS_FMODE_EXEC)
875 *ibits = MDS_INODELOCK_LOOKUP | MDS_INODELOCK_OPEN;
876 } else if (atomic_read(&obj->mot_lease_count) > 0) {
877 if (open_flags & MDS_FMODE_WRITE)
883 *ibits = MDS_INODELOCK_OPEN;
886 lhc = &info->mti_lh[MDT_LH_LOCAL];
887 } else if (dom_lock) {
888 lm = (open_flags & MDS_FMODE_WRITE) ? LCK_PW : LCK_PR;
889 if (info->mti_mdt->mdt_opts.mo_dom_lock ==
890 TRYLOCK_DOM_ON_OPEN) {
891 trybits |= MDS_INODELOCK_DOM |
892 MDS_INODELOCK_LAYOUT;
894 /* mo_dom_lock == ALWAYS_DOM_LOCK_ON_OPEN */
895 *ibits = MDS_INODELOCK_DOM;
896 if (info->mti_mdt->mdt_opts.mo_dom_read_open) {
897 trybits |= MDS_INODELOCK_LAYOUT;
902 CDEBUG(D_INODE, "normal open:"DFID" lease count: %d, lm: %d\n",
903 PFID(mdt_object_fid(obj)),
904 atomic_read(&obj->mot_open_count), lm);
907 mdt_lock_reg_init(lhc, lm);
909 /* one problem to return layout lock on open is that it may result
910 * in too many layout locks cached on the client side. */
911 if (!OBD_FAIL_CHECK(OBD_FAIL_MDS_NO_LL_OPEN) && try_layout) {
912 trybits |= MDS_INODELOCK_LAYOUT;
915 if (*ibits | trybits)
916 rc = mdt_object_lock_try(info, obj, lhc, ibits, trybits, false);
918 CDEBUG(D_INODE, "%s: Requested bits lock:"DFID ", ibits = %#llx/%#llx"
919 ", open_flags = %#llo, try_layout = %d : rc = %d\n",
920 mdt_obd_name(info->mti_mdt), PFID(mdt_object_fid(obj)),
921 *ibits, trybits, open_flags, try_layout, rc);
923 /* will change layout, revoke layout locks by enqueuing EX lock. */
924 if (rc == 0 && create_layout) {
925 struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LAYOUT];
927 CDEBUG(D_INODE, "Will create layout, get EX layout lock:"DFID
928 ", open_flags = %#llo\n",
929 PFID(mdt_object_fid(obj)), open_flags);
931 /* We cannot enqueue another lock for the same resource we
932 * already have a lock for, due to mechanics of waiting list
933 * iterating in ldlm, see LU-3601.
934 * As such we'll drop the open lock we just got above here,
935 * it's ok not to have this open lock as it's main purpose is to
936 * flush unused cached client open handles. */
937 if (lustre_handle_is_used(&lhc->mlh_reg_lh))
938 mdt_object_unlock(info, obj, lhc, 1);
940 LASSERT(!try_layout);
941 mdt_lock_handle_init(ll);
942 mdt_lock_reg_init(ll, LCK_EX);
943 rc = mdt_object_lock(info, obj, ll, MDS_INODELOCK_LAYOUT);
945 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_LL_BLOCK, 2);
948 /* Check if there is any other open handles after acquiring
949 * open lock. At this point, caching open handles have been revoked
951 * XXX: Now only exclusive open is supported. Need to check the
952 * type of open for generic lease support. */
953 if (rc == 0 && acq_lease) {
954 struct ptlrpc_request *req = mdt_info_req(info);
955 struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
956 struct mdt_file_data *mfd;
957 bool is_replay_or_resent;
960 /* For lease: application can open a file and then apply lease,
961 * @handle contains original open handle in that case.
962 * In recovery, open REQ will be replayed and the lease REQ may
963 * be resent that means the open handle is already stale, so we
964 * need to fix it up here by finding new handle. */
965 is_replay_or_resent = req_is_replay(req) ||
966 lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT;
968 /* if the request is _not_ a replay request, rr_handle
969 * may be used to hold an openhandle which is issuing the
970 * lease request, so that this openhandle doesn't count. */
971 mfd = mdt_handle2mfd(med, info->mti_rr.rr_handle,
972 is_replay_or_resent);
976 CDEBUG(D_INODE, "acq_lease "DFID": openers: %d, want: %d\n",
977 PFID(mdt_object_fid(obj)),
978 atomic_read(&obj->mot_open_count), open_count);
980 if (atomic_read(&obj->mot_open_count) > open_count)
981 GOTO(out, rc = -EBUSY);
989 static void mdt_object_open_unlock(struct mdt_thread_info *info,
990 struct mdt_object *obj,
991 struct mdt_lock_handle *lhc,
994 __u64 open_flags = info->mti_spec.sp_cr_flags;
995 struct mdt_lock_handle *ll = &info->mti_lh[MDT_LH_LOCAL];
998 if (req_is_replay(mdt_info_req(info)))
1001 /* Release local lock - the lock put in MDT_LH_LOCAL will never
1002 * return to client side. */
1003 if (lustre_handle_is_used(&ll->mlh_reg_lh))
1004 mdt_object_unlock(info, obj, ll, 1);
1006 ll = &info->mti_lh[MDT_LH_LAYOUT];
1007 /* Release local layout lock, layout was created */
1008 if (lustre_handle_is_used(&ll->mlh_reg_lh)) {
1009 LASSERT(!(ibits & MDS_INODELOCK_LAYOUT));
1010 mdt_object_unlock(info, obj, ll, 1);
1013 if (open_flags & MDS_OPEN_LEASE)
1014 up_write(&obj->mot_open_sem);
1016 up_read(&obj->mot_open_sem);
1018 /* Cross-ref case, the lock should be returned to the client */
1019 if (ibits == 0 || rc == -MDT_EREMOTE_OPEN)
1022 if (!(open_flags & MDS_OPEN_LOCK) && !(ibits & MDS_INODELOCK_LAYOUT) &&
1023 !(ibits & MDS_INODELOCK_DOM)) {
1024 /* for the open request, the lock will only return to client
1025 * if open or layout lock is granted. */
1029 if (rc != 0 || !lustre_handle_is_used(&lhc->mlh_reg_lh)) {
1030 struct ldlm_reply *ldlm_rep;
1032 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
1033 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1034 if (lustre_handle_is_used(&lhc->mlh_reg_lh))
1035 mdt_object_unlock(info, obj, lhc, 1);
1041 * Check release is permitted for the current HSM flags.
1043 static bool mdt_hsm_release_allow(const struct md_attr *ma)
1045 if (!(ma->ma_valid & MA_HSM))
1048 if (ma->ma_hsm.mh_flags & (HS_DIRTY|HS_NORELEASE|HS_LOST))
1051 if (!(ma->ma_hsm.mh_flags & HS_ARCHIVED))
1057 static int mdt_open_by_fid_lock(struct mdt_thread_info *info,
1058 struct ldlm_reply *rep,
1059 struct mdt_lock_handle *lhc)
1061 const struct lu_env *env = info->mti_env;
1062 struct mdt_device *mdt = info->mti_mdt;
1063 __u64 flags = info->mti_spec.sp_cr_flags;
1064 struct mdt_reint_record *rr = &info->mti_rr;
1065 struct md_attr *ma = &info->mti_attr;
1066 struct mdt_object *parent= NULL;
1067 struct mdt_object *o;
1069 bool object_locked = false;
1073 if (md_should_create(flags)) {
1074 if (!lu_fid_eq(rr->rr_fid1, rr->rr_fid2)) {
1075 parent = mdt_object_find(env, mdt, rr->rr_fid1);
1076 if (IS_ERR(parent)) {
1077 CDEBUG(D_INODE, "Fail to find parent "DFID
1078 " for anonymous created %ld, try to"
1079 " use server-side parent.\n",
1080 PFID(rr->rr_fid1), PTR_ERR(parent));
1085 ma->ma_need |= MA_PFID;
1088 o = mdt_object_find(env, mdt, rr->rr_fid2);
1090 GOTO(out_parent_put, rc = PTR_ERR(o));
1092 if (mdt_object_remote(o)) {
1093 CDEBUG(D_INFO, "%s: "DFID" is on remote MDT.\n",
1094 mdt_obd_name(info->mti_mdt),
1096 GOTO(out, rc = -EREMOTE);
1097 } else if (!mdt_object_exists(o)) {
1098 mdt_set_disposition(info, rep,
1102 GOTO(out, rc = -ENOENT);
1105 mdt_set_disposition(info, rep, (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1107 mdt_prep_ma_buf_from_rep(info, o, ma);
1108 if (flags & MDS_OPEN_RELEASE)
1109 ma->ma_need |= MA_HSM;
1110 rc = mdt_attr_get_complex(info, o, ma);
1114 /* We should not change file's existing LOV EA */
1115 if (S_ISREG(lu_object_attr(&o->mot_obj)) &&
1116 flags & MDS_OPEN_HAS_EA && ma->ma_valid & MA_LOV)
1117 GOTO(out, rc = -EEXIST);
1119 /* If a release request, check file flags are fine and ask for an
1120 * exclusive open access. */
1121 if (flags & MDS_OPEN_RELEASE && !mdt_hsm_release_allow(ma))
1122 GOTO(out, rc = -EPERM);
1124 rc = mdt_check_resent_lock(info, o, lhc);
1127 } else if (rc > 0) {
1128 rc = mdt_object_open_lock(info, o, lhc, &ibits);
1129 object_locked = true;
1131 GOTO(out_unlock, rc);
1134 if (ma->ma_valid & MA_PFID) {
1135 parent = mdt_object_find(env, mdt, &ma->ma_pfid);
1136 if (IS_ERR(parent)) {
1137 CDEBUG(D_INODE, "Fail to find parent "DFID
1138 " for anonymous created %ld, try to"
1139 " use system default.\n",
1140 PFID(&ma->ma_pfid), PTR_ERR(parent));
1145 rc = mdt_finish_open(info, parent, o, flags, 0, rep);
1147 mdt_set_disposition(info, rep, DISP_LOOKUP_POS);
1148 if (flags & MDS_OPEN_LOCK)
1149 mdt_set_disposition(info, rep, DISP_OPEN_LOCK);
1150 if (flags & MDS_OPEN_LEASE)
1151 mdt_set_disposition(info, rep, DISP_OPEN_LEASE);
1153 GOTO(out_unlock, rc);
1157 mdt_object_open_unlock(info, o, lhc, ibits, rc);
1159 mdt_object_put(env, o);
1161 mdt_pack_size2body(info, rr->rr_fid2, &lhc->mlh_reg_lh);
1164 mdt_object_put(env, parent);
1168 /* Cross-ref request. Currently it can only be a pure open (w/o create) */
1169 static int mdt_cross_open(struct mdt_thread_info *info,
1170 const struct lu_fid *parent_fid,
1171 const struct lu_fid *fid,
1172 struct ldlm_reply *rep, __u32 flags)
1174 struct md_attr *ma = &info->mti_attr;
1175 struct mdt_object *o;
1179 o = mdt_object_find(info->mti_env, info->mti_mdt, fid);
1181 RETURN(rc = PTR_ERR(o));
1183 if (mdt_object_remote(o)) {
1184 /* Something is wrong here, the object is on another MDS! */
1185 CERROR("%s: "DFID" isn't on this server!: rc = %d\n",
1186 mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT);
1187 LU_OBJECT_DEBUG(D_WARNING, info->mti_env,
1189 "Object isn't on this server! FLD error?");
1192 if (mdt_object_exists(o)) {
1193 /* Do permission check for cross-open. */
1194 rc = mo_permission(info->mti_env, NULL,
1195 mdt_object_child(o),
1196 NULL, flags | MDS_OPEN_CROSS);
1200 mdt_prep_ma_buf_from_rep(info, o, ma);
1201 rc = mdt_attr_get_complex(info, o, ma);
1205 rc = mdt_finish_open(info, NULL, o, flags, 0, rep);
1208 * Something is wrong here. lookup was positive but
1209 * there is no object!
1211 CERROR("%s: "DFID" doesn't exist!: rc = %d\n",
1212 mdt_obd_name(info->mti_mdt), PFID(fid), -EFAULT);
1217 mdt_object_put(info->mti_env, o);
1222 * find root object and take its xattr lock if it's on remote MDT, later create
1223 * may use fs default striping (which is stored in root xattr).
1225 static int mdt_lock_root_xattr(struct mdt_thread_info *info,
1226 struct mdt_device *mdt)
1228 struct mdt_object *md_root = mdt->mdt_md_root;
1229 struct lustre_handle lhroot;
1232 if (md_root == NULL) {
1233 lu_root_fid(&info->mti_tmp_fid1);
1234 md_root = mdt_object_find(info->mti_env, mdt,
1235 &info->mti_tmp_fid1);
1236 if (IS_ERR(md_root))
1237 return PTR_ERR(md_root);
1239 spin_lock(&mdt->mdt_lock);
1240 if (mdt->mdt_md_root != NULL) {
1241 spin_unlock(&mdt->mdt_lock);
1243 LASSERTF(mdt->mdt_md_root == md_root,
1244 "Different root object ("
1245 DFID") instances, %p, %p\n",
1246 PFID(&info->mti_tmp_fid1),
1247 mdt->mdt_md_root, md_root);
1248 LASSERT(atomic_read(
1249 &md_root->mot_obj.lo_header->loh_ref) > 1);
1251 mdt_object_put(info->mti_env, md_root);
1253 mdt->mdt_md_root = md_root;
1254 spin_unlock(&mdt->mdt_lock);
1258 if (md_root->mot_cache_attr || !mdt_object_remote(md_root))
1261 rc = mdt_remote_object_lock(info, md_root, mdt_object_fid(md_root),
1262 &lhroot, LCK_PR, MDS_INODELOCK_XATTR,
1267 md_root->mot_cache_attr = 1;
1269 /* don't cancel this lock, so that we know the cached xattr is valid. */
1270 ldlm_lock_decref(&lhroot, LCK_PR);
1275 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc)
1277 struct mdt_device *mdt = info->mti_mdt;
1278 struct ptlrpc_request *req = mdt_info_req(info);
1279 struct mdt_object *parent;
1280 struct mdt_object *child;
1281 struct mdt_lock_handle *lh;
1282 struct ldlm_reply *ldlm_rep;
1283 struct mdt_body *repbody;
1284 struct lu_fid *child_fid = &info->mti_tmp_fid1;
1285 struct md_attr *ma = &info->mti_attr;
1286 __u64 create_flags = info->mti_spec.sp_cr_flags;
1288 struct mdt_reint_record *rr = &info->mti_rr;
1291 int object_locked = 0;
1295 OBD_FAIL_TIMEOUT_ORSET(OBD_FAIL_MDS_PAUSE_OPEN, OBD_FAIL_ONCE,
1296 (obd_timeout + 1) / 4);
1298 mdt_counter_incr(req, LPROC_MDT_OPEN);
1299 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1301 ma->ma_need = MA_INODE;
1304 LASSERT(info->mti_pill->rc_fmt == &RQF_LDLM_INTENT_OPEN);
1305 ldlm_rep = req_capsule_server_get(info->mti_pill, &RMF_DLM_REP);
1307 if (unlikely(create_flags & MDS_OPEN_JOIN_FILE)) {
1308 CERROR("file join is not supported anymore.\n");
1309 GOTO(out, result = err_serious(-EOPNOTSUPP));
1311 msg_flags = lustre_msg_get_flags(req->rq_reqmsg);
1313 if ((create_flags & (MDS_OPEN_HAS_EA | MDS_OPEN_HAS_OBJS)) &&
1314 info->mti_spec.u.sp_ea.eadata == NULL)
1315 GOTO(out, result = err_serious(-EINVAL));
1317 if (create_flags & MDS_FMODE_WRITE &&
1318 exp_connect_flags(req->rq_export) & OBD_CONNECT_RDONLY)
1319 GOTO(out, result = -EROFS);
1321 CDEBUG(D_INODE, "I am going to open "DFID"/("DNAME"->"DFID") "
1322 "cr_flag=%#llo mode=0%06o msg_flag=0x%x\n",
1323 PFID(rr->rr_fid1), PNAME(&rr->rr_name),
1324 PFID(rr->rr_fid2), create_flags,
1325 ma->ma_attr.la_mode, msg_flags);
1327 if (info->mti_cross_ref) {
1328 /* This is cross-ref open */
1329 mdt_set_disposition(info, ldlm_rep,
1330 (DISP_IT_EXECD | DISP_LOOKUP_EXECD |
1332 result = mdt_cross_open(info, rr->rr_fid2, rr->rr_fid1,
1333 ldlm_rep, create_flags);
1335 } else if (req_is_replay(req)) {
1336 result = mdt_open_by_fid(info, ldlm_rep);
1338 if (result != -ENOENT)
1341 /* We didn't find the correct object, so we need to re-create it
1342 * via a regular replay. */
1343 if (!(create_flags & MDS_OPEN_CREAT)) {
1344 DEBUG_REQ(D_ERROR, req,
1345 "OPEN & CREAT not in open replay/by_fid.");
1346 GOTO(out, result = -EFAULT);
1348 CDEBUG(D_INFO, "No object(1), continue as regular open.\n");
1349 } else if (create_flags & (MDS_OPEN_BY_FID | MDS_OPEN_LOCK)) {
1351 * MDS_OPEN_LOCK is checked for backward compatibility with 2.1
1354 result = mdt_open_by_fid_lock(info, ldlm_rep, lhc);
1356 CDEBUG(D_INFO, "no object for "DFID": %d\n",
1357 PFID(rr->rr_fid2), result);
1361 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK))
1362 GOTO(out, result = err_serious(-ENOMEM));
1364 mdt_set_disposition(info, ldlm_rep,
1365 (DISP_IT_EXECD | DISP_LOOKUP_EXECD));
1367 if (!lu_name_is_valid(&rr->rr_name))
1368 GOTO(out, result = -EPROTO);
1370 result = mdt_lock_root_xattr(info, mdt);
1375 lh = &info->mti_lh[MDT_LH_PARENT];
1376 mdt_lock_pdo_init(lh,
1377 (create_flags & MDS_OPEN_CREAT) ? LCK_PW : LCK_PR,
1380 parent = mdt_object_find(info->mti_env, mdt, rr->rr_fid1);
1382 GOTO(out, result = PTR_ERR(parent));
1384 result = mdt_object_lock(info, parent, lh, MDS_INODELOCK_UPDATE);
1386 mdt_object_put(info->mti_env, parent);
1390 /* get and check version of parent */
1391 result = mdt_version_get_check(info, parent, 0);
1393 GOTO(out_parent, result);
1395 fid_zero(child_fid);
1397 result = mdo_lookup(info->mti_env, mdt_object_child(parent),
1398 &rr->rr_name, child_fid, &info->mti_spec);
1400 LASSERTF(ergo(result == 0, fid_is_sane(child_fid)),
1401 "looking for "DFID"/"DNAME", found FID = "DFID"\n",
1402 PFID(mdt_object_fid(parent)), PNAME(&rr->rr_name),
1405 if (result != 0 && result != -ENOENT && result != -ESTALE)
1406 GOTO(out_parent, result);
1408 if (result == -ENOENT || result == -ESTALE) {
1409 /* If the object is dead, let's check if the object
1410 * is being migrated to a new object */
1411 if (result == -ESTALE) {
1412 struct lu_buf lmv_buf;
1414 lmv_buf.lb_buf = info->mti_xattr_buf;
1415 lmv_buf.lb_len = sizeof(info->mti_xattr_buf);
1416 rc = mo_xattr_get(info->mti_env,
1417 mdt_object_child(parent),
1418 &lmv_buf, XATTR_NAME_LMV);
1420 struct lmv_mds_md_v1 *lmv;
1422 lmv = lmv_buf.lb_buf;
1423 if (le32_to_cpu(lmv->lmv_hash_type) &
1424 LMV_HASH_FLAG_MIGRATION) {
1425 /* Get the new parent FID and retry */
1426 mdt_object_unlock_put(info, parent,
1428 mdt_lock_handle_init(lh);
1430 (struct lu_fid *)rr->rr_fid1,
1431 &lmv->lmv_stripe_fids[1]);
1437 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_NEG);
1438 if (result == -ESTALE) {
1440 * -ESTALE means the parent is a dead(unlinked) dir, so
1441 * it should return -ENOENT to in accordance with the
1442 * original mds implementaion.
1444 GOTO(out_parent, result = -ENOENT);
1447 if (!(create_flags & MDS_OPEN_CREAT))
1448 GOTO(out_parent, result);
1449 if (mdt_rdonly(req->rq_export))
1450 GOTO(out_parent, result = -EROFS);
1451 *child_fid = *info->mti_rr.rr_fid2;
1452 LASSERTF(fid_is_sane(child_fid), "fid="DFID"\n",
1454 /* In the function below, .hs_keycmp resolves to
1455 * lu_obj_hop_keycmp() */
1456 /* coverity[overrun-buffer-val] */
1457 child = mdt_object_new(info->mti_env, mdt, child_fid);
1460 * Check for O_EXCL is moved to the mdt_finish_open(), we need to
1461 * return FID back in that case.
1463 mdt_set_disposition(info, ldlm_rep, DISP_LOOKUP_POS);
1464 child = mdt_object_find(info->mti_env, mdt, child_fid);
1467 GOTO(out_parent, result = PTR_ERR(child));
1469 /** check version of child */
1470 rc = mdt_version_get_check(info, child, 1);
1472 GOTO(out_child, result = rc);
1474 if (result == -ENOENT) {
1475 /* Create under OBF and .lustre is not permitted */
1476 if (!fid_is_md_operative(rr->rr_fid1))
1477 GOTO(out_child, result = -EPERM);
1479 /* save versions in reply */
1480 mdt_version_get_save(info, parent, 0);
1481 mdt_version_get_save(info, child, 1);
1483 /* version of child will be changed */
1484 tgt_vbr_obj_set(info->mti_env, mdt_obj2dt(child));
1486 /* Not found and with MDS_OPEN_CREAT: let's create it. */
1487 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1489 /* Let lower layers know what is lock mode on directory. */
1490 info->mti_spec.sp_cr_mode =
1491 mdt_dlm_mode2mdl_mode(lh->mlh_pdo_mode);
1493 /* Don't do lookup sanity check. We know name doesn't exist. */
1494 info->mti_spec.sp_cr_lookup = 0;
1495 info->mti_spec.sp_feat = &dt_directory_features;
1497 result = mdo_create(info->mti_env, mdt_object_child(parent),
1498 &rr->rr_name, mdt_object_child(child),
1499 &info->mti_spec, &info->mti_attr);
1500 if (result == -ERESTART) {
1501 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1502 GOTO(out_child, result);
1504 mdt_prep_ma_buf_from_rep(info, child, ma);
1505 /* XXX: we should call this once, see few lines below */
1507 result = mdt_attr_get_complex(info, child, ma);
1510 GOTO(out_child, result);
1513 mdt_counter_incr(req, LPROC_MDT_MKNOD);
1516 * The object is on remote node, return its FID for remote open.
1518 if (mdt_object_remote(child)) {
1520 * Check if this lock already was sent to client and
1521 * this is resent case. For resent case do not take lock
1522 * again, use what is already granted.
1524 LASSERT(lhc != NULL);
1526 rc = mdt_check_resent_lock(info, child, lhc);
1528 GOTO(out_child, result = rc);
1529 } else if (rc > 0) {
1530 mdt_lock_handle_init(lhc);
1531 mdt_lock_reg_init(lhc, LCK_PR);
1533 rc = mdt_object_lock(info, child, lhc,
1534 MDS_INODELOCK_LOOKUP);
1536 repbody->mbo_fid1 = *mdt_object_fid(child);
1537 repbody->mbo_valid |= (OBD_MD_FLID | OBD_MD_MDS);
1541 result = -MDT_EREMOTE_OPEN;
1542 GOTO(out_child, result);
1543 } else if (mdt_object_exists(child)) {
1544 /* We have to get attr & LOV EA & HSM for this
1546 mdt_prep_ma_buf_from_rep(info, child, ma);
1547 ma->ma_need |= MA_HSM;
1548 result = mdt_attr_get_complex(info, child, ma);
1550 GOTO(out_child, result);
1552 /* Object does not exist. Likely FS corruption. */
1553 CERROR("%s: name '"DNAME"' present, but FID "
1554 DFID" is invalid\n", mdt_obd_name(info->mti_mdt),
1555 PNAME(&rr->rr_name), PFID(child_fid));
1556 GOTO(out_child, result = -EIO);
1560 rc = mdt_check_resent_lock(info, child, lhc);
1562 GOTO(out_child, result = rc);
1563 } else if (rc == 0) {
1564 /* the open lock might already be gotten in
1565 * ldlm_handle_enqueue() */
1566 LASSERT(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT);
1567 if (create_flags & MDS_OPEN_LOCK)
1568 mdt_set_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1570 /* get openlock if this isn't replay and client requested it */
1571 if (!req_is_replay(req)) {
1572 rc = mdt_object_open_lock(info, child, lhc, &ibits);
1575 GOTO(out_child_unlock, result = rc);
1576 else if (create_flags & MDS_OPEN_LOCK)
1577 mdt_set_disposition(info, ldlm_rep,
1581 /* Try to open it now. */
1582 rc = mdt_finish_open(info, parent, child, create_flags,
1586 /* openlock will be released if mdt_finish_open failed */
1587 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_LOCK);
1589 if (created && create_flags & MDS_OPEN_VOLATILE) {
1590 CERROR("%s: cannot open volatile file "DFID", orphan "
1591 "file will be left in PENDING directory until "
1592 "next reboot, rc = %d\n", mdt_obd_name(mdt),
1593 PFID(mdt_object_fid(child)), rc);
1594 GOTO(out_child_unlock, result);
1600 rc = mdo_unlink(info->mti_env,
1601 mdt_object_child(parent),
1602 mdt_object_child(child),
1604 &info->mti_attr, 0);
1606 CERROR("%s: "DFID" cleanup of open: rc = %d\n",
1607 mdt_obd_name(info->mti_mdt),
1608 PFID(mdt_object_fid(child)), rc);
1609 mdt_clear_disposition(info, ldlm_rep, DISP_OPEN_CREATE);
1615 mdt_object_open_unlock(info, child, lhc, ibits, result);
1617 mdt_object_put(info->mti_env, child);
1619 mdt_pack_size2body(info, child_fid, &lhc->mlh_reg_lh);
1621 mdt_object_unlock_put(info, parent, lh, result || !created);
1624 lustre_msg_set_transno(req->rq_repmsg, 0);
1629 * Create an orphan object use local root.
1631 static struct mdt_object *mdt_orphan_open(struct mdt_thread_info *info,
1632 struct mdt_device *mdt,
1633 const struct lu_fid *fid,
1634 struct md_attr *attr, fmode_t fmode)
1636 const struct lu_env *env = info->mti_env;
1637 struct md_op_spec *spec = &info->mti_spec;
1638 struct lu_fid *local_root_fid = &info->mti_tmp_fid1;
1639 struct mdt_object *obj = NULL;
1640 struct mdt_object *local_root;
1641 static const struct lu_name lname = {
1642 .ln_name = "i_am_nobody",
1643 .ln_namelen = sizeof("i_am_nobody") - 1,
1645 struct lu_ucred *uc;
1646 cfs_cap_t uc_cap_save;
1650 rc = dt_root_get(env, mdt->mdt_bottom, local_root_fid);
1652 RETURN(ERR_PTR(rc));
1654 local_root = mdt_object_find(env, mdt, local_root_fid);
1655 if (IS_ERR(local_root))
1658 obj = mdt_object_new(env, mdt, fid);
1660 GOTO(out, rc = PTR_ERR(obj));
1662 spec->sp_cr_lookup = 0;
1663 spec->sp_feat = &dt_directory_features;
1664 spec->sp_cr_mode = MDL_MINMODE; /* no lock */
1665 spec->sp_cr_flags = MDS_OPEN_VOLATILE | fmode;
1666 if (attr->ma_valid & MA_LOV) {
1667 spec->u.sp_ea.eadata = attr->ma_lmm;
1668 spec->u.sp_ea.eadatalen = attr->ma_lmm_size;
1669 spec->sp_cr_flags |= MDS_OPEN_HAS_EA;
1671 spec->sp_cr_flags |= MDS_OPEN_DELAY_CREATE;
1675 uc_cap_save = uc->uc_cap;
1676 uc->uc_cap |= 1 << CFS_CAP_DAC_OVERRIDE;
1677 rc = mdo_create(env, mdt_object_child(local_root), &lname,
1678 mdt_object_child(obj), spec, attr);
1679 uc->uc_cap = uc_cap_save;
1681 CERROR("%s: cannot create volatile file "DFID": rc = %d\n",
1682 mdt_obd_name(mdt), PFID(fid), rc);
1686 rc = mo_open(env, mdt_object_child(obj), MDS_OPEN_CREATED);
1688 CERROR("%s: cannot open volatile file "DFID", orphan "
1689 "file will be left in PENDING directory until "
1690 "next reboot, rc = %d\n", mdt_obd_name(mdt),
1697 mdt_object_put(env, obj);
1700 mdt_object_put(env, local_root);
1704 /* XXX Look into layout in MDT layer. */
1705 static inline int mdt_hsm_set_released(struct lov_mds_md *lmm)
1707 struct lov_comp_md_v1 *comp_v1;
1708 struct lov_mds_md *v1;
1712 if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_COMP_V1_DEFINED)) {
1713 comp_v1 = (struct lov_comp_md_v1 *)lmm;
1715 if (comp_v1->lcm_entry_count == 0)
1718 for (i = 0; i < le16_to_cpu(comp_v1->lcm_entry_count); i++) {
1719 off = le32_to_cpu(comp_v1->lcm_entries[i].lcme_offset);
1720 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
1721 v1->lmm_pattern |= cpu_to_le32(LOV_PATTERN_F_RELEASED);
1724 lmm->lmm_pattern |= cpu_to_le32(LOV_PATTERN_F_RELEASED);
1729 static int mdt_hsm_release(struct mdt_thread_info *info, struct mdt_object *o,
1732 struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_LAYOUT];
1733 struct lu_ucred *uc = mdt_ucred(info);
1734 struct close_data *data;
1735 struct ldlm_lock *lease;
1736 struct mdt_object *orphan;
1737 struct md_attr *orp_ma;
1745 if (mdt_rdonly(info->mti_exp))
1748 data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
1752 lease = ldlm_handle2lock(&data->cd_handle);
1756 /* try to hold open_sem so that nobody else can open the file */
1757 if (!down_write_trylock(&o->mot_open_sem)) {
1758 ldlm_lock_cancel(lease);
1759 GOTO(out_reprocess, rc = -EBUSY);
1762 /* Check if the lease open lease has already canceled */
1763 lock_res_and_lock(lease);
1764 lease_broken = ldlm_is_cancel(lease);
1765 unlock_res_and_lock(lease);
1767 LDLM_DEBUG(lease, DFID " lease broken? %d",
1768 PFID(mdt_object_fid(o)), lease_broken);
1770 /* Cancel server side lease. Client side counterpart should
1771 * have been cancelled. It's okay to cancel it now as we've
1772 * held mot_open_sem. */
1773 ldlm_lock_cancel(lease);
1775 if (lease_broken) /* don't perform release task */
1776 GOTO(out_unlock, rc = -ESTALE);
1778 if (fid_is_zero(&data->cd_fid) || !fid_is_sane(&data->cd_fid))
1779 GOTO(out_unlock, rc = -EINVAL);
1781 /* ma_need was set before but it seems fine to change it in order to
1782 * avoid modifying the one from RPC */
1783 ma->ma_need = MA_HSM;
1784 rc = mdt_attr_get_complex(info, o, ma);
1786 GOTO(out_unlock, rc);
1788 if (!mdt_hsm_release_allow(ma))
1789 GOTO(out_unlock, rc = -EPERM);
1791 /* already released? */
1792 if (ma->ma_hsm.mh_flags & HS_RELEASED)
1793 GOTO(out_unlock, rc = 0);
1795 /* Compare on-disk and packed data_version */
1796 if (data->cd_data_version != ma->ma_hsm.mh_arch_ver) {
1797 CDEBUG(D_HSM, DFID" data_version mismatches: packed=%llu"
1798 " and on-disk=%llu\n", PFID(mdt_object_fid(o)),
1799 data->cd_data_version, ma->ma_hsm.mh_arch_ver);
1800 GOTO(out_unlock, rc = -EPERM);
1803 ma->ma_valid = MA_INODE;
1804 ma->ma_attr.la_valid &= LA_ATIME | LA_MTIME | LA_CTIME | LA_SIZE;
1805 rc = mo_attr_set(info->mti_env, mdt_object_child(o), ma);
1807 GOTO(out_unlock, rc);
1809 mutex_lock(&o->mot_som_mutex);
1810 rc2 = mdt_set_som(info, o, SOM_FL_STRICT, ma->ma_attr.la_size,
1811 ma->ma_attr.la_blocks);
1812 mutex_unlock(&o->mot_som_mutex);
1815 "%s: File "DFID" SOM update failed: rc = %d\n",
1816 mdt_obd_name(info->mti_mdt),
1817 PFID(mdt_object_fid(o)), rc2);
1820 ma->ma_need = MA_INODE | MA_LOV;
1821 rc = mdt_attr_get_complex(info, o, ma);
1823 GOTO(out_unlock, rc);
1825 if (!(ma->ma_valid & MA_LOV)) {
1826 /* Even empty file are released */
1827 memset(ma->ma_lmm, 0, sizeof(*ma->ma_lmm));
1828 ma->ma_lmm->lmm_magic = cpu_to_le32(LOV_MAGIC_V1_DEFINED);
1829 ma->ma_lmm->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0);
1830 ma->ma_lmm->lmm_stripe_size = cpu_to_le32(LOV_MIN_STRIPE_SIZE);
1831 ma->ma_lmm_size = sizeof(*ma->ma_lmm);
1833 /* Magic must be LOV_MAGIC_*_DEFINED or LOD will interpret
1834 * ma_lmm as lov_user_md, then it will be confused by union of
1835 * layout_gen and stripe_offset. */
1836 if ((le32_to_cpu(ma->ma_lmm->lmm_magic) & LOV_MAGIC_MASK) ==
1838 ma->ma_lmm->lmm_magic |= cpu_to_le32(LOV_MAGIC_DEFINED);
1840 GOTO(out_unlock, rc = -EINVAL);
1843 /* Set file as released. */
1844 rc = mdt_hsm_set_released(ma->ma_lmm);
1846 GOTO(out_unlock, rc);
1848 orp_ma = &info->mti_u.hsm.attr;
1849 orp_ma->ma_attr.la_mode = S_IFREG | S_IWUSR;
1850 /* We use root ownership to bypass potential quota
1851 * restrictions on the user and group of the file. */
1852 orp_ma->ma_attr.la_uid = 0;
1853 orp_ma->ma_attr.la_gid = 0;
1854 orp_ma->ma_attr.la_valid = LA_MODE | LA_UID | LA_GID;
1855 orp_ma->ma_lmm = ma->ma_lmm;
1856 orp_ma->ma_lmm_size = ma->ma_lmm_size;
1857 orp_ma->ma_valid = MA_INODE | MA_LOV;
1858 orphan = mdt_orphan_open(info, info->mti_mdt, &data->cd_fid, orp_ma,
1860 if (IS_ERR(orphan)) {
1861 CERROR("%s: cannot open orphan file "DFID": rc = %ld\n",
1862 mdt_obd_name(info->mti_mdt), PFID(&data->cd_fid),
1864 GOTO(out_unlock, rc = PTR_ERR(orphan));
1867 /* Set up HSM attribute for orphan object */
1868 CLASSERT(sizeof(struct hsm_attrs) <= sizeof(info->mti_xattr_buf));
1869 buf = &info->mti_buf;
1870 buf->lb_buf = info->mti_xattr_buf;
1871 buf->lb_len = sizeof(struct hsm_attrs);
1872 ma->ma_hsm.mh_flags |= HS_RELEASED;
1873 lustre_hsm2buf(buf->lb_buf, &ma->ma_hsm);
1874 ma->ma_hsm.mh_flags &= ~HS_RELEASED;
1876 mdt_lock_reg_init(lh, LCK_EX);
1877 rc = mdt_object_lock(info, o, lh, MDS_INODELOCK_LAYOUT |
1878 MDS_INODELOCK_XATTR);
1880 GOTO(out_close, rc);
1882 /* The orphan has root ownership so we need to raise
1883 * CAP_FOWNER to set the HSM attributes. */
1885 uc->uc_cap |= MD_CAP_TO_MASK(CFS_CAP_FOWNER);
1886 rc = mo_xattr_set(info->mti_env, mdt_object_child(orphan), buf,
1890 GOTO(out_layout_lock, rc);
1892 /* Swap layout with orphan objects. */
1893 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o),
1894 mdt_object_child(orphan),
1895 SWAP_LAYOUTS_MDS_HSM);
1899 /* Release exclusive LL */
1900 mdt_object_unlock(info, o, lh, 1);
1902 /* Close orphan object anyway */
1903 rc2 = mo_close(info->mti_env, mdt_object_child(orphan), orp_ma,
1906 CERROR("%s: error closing volatile file "DFID": rc = %d\n",
1907 mdt_obd_name(info->mti_mdt), PFID(&data->cd_fid), rc2);
1908 LU_OBJECT_DEBUG(D_HSM, info->mti_env, &orphan->mot_obj,
1910 mdt_object_put(info->mti_env, orphan);
1913 up_write(&o->mot_open_sem);
1915 /* already released */
1917 struct mdt_body *repbody;
1919 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
1920 LASSERT(repbody != NULL);
1921 repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED;
1925 ldlm_reprocess_all(lease->l_resource);
1926 LDLM_LOCK_PUT(lease);
1934 int mdt_close_handle_layouts(struct mdt_thread_info *info,
1935 struct mdt_object *o, struct md_attr *ma)
1937 struct mdt_lock_handle *lh1 = &info->mti_lh[MDT_LH_NEW];
1938 struct mdt_lock_handle *lh2 = &info->mti_lh[MDT_LH_OLD];
1939 struct close_data *data;
1940 struct ldlm_lock *lease;
1941 struct mdt_object *o1 = o, *o2;
1947 if (exp_connect_flags(info->mti_exp) & OBD_CONNECT_RDONLY)
1950 if (!S_ISREG(lu_object_attr(&o1->mot_obj)))
1953 data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
1957 if (fid_is_zero(&data->cd_fid) || !fid_is_sane(&data->cd_fid))
1960 rc = lu_fid_cmp(&data->cd_fid, mdt_object_fid(o));
1961 if (unlikely(rc == 0))
1964 /* Exchange o1 and o2, to enforce locking order */
1965 swap_objects = (rc < 0);
1967 lease = ldlm_handle2lock(&data->cd_handle);
1971 o2 = mdt_object_find(info->mti_env, info->mti_mdt, &data->cd_fid);
1973 GOTO(out_lease, rc = PTR_ERR(o2));
1975 if (!S_ISREG(lu_object_attr(&o2->mot_obj))) {
1976 swap_objects = false; /* not swapped yet */
1977 GOTO(out_obj, rc = -EINVAL);
1983 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o1), NULL,
1988 rc = mo_permission(info->mti_env, NULL, mdt_object_child(o2), NULL,
1993 /* try to hold open_sem so that nobody else can open the file */
1994 if (!down_write_trylock(&o->mot_open_sem)) {
1995 ldlm_lock_cancel(lease);
1996 GOTO(out_obj, rc = -EBUSY);
1999 /* Check if the lease open lease has already canceled */
2000 lock_res_and_lock(lease);
2001 lease_broken = ldlm_is_cancel(lease);
2002 unlock_res_and_lock(lease);
2004 LDLM_DEBUG(lease, DFID " lease broken? %d",
2005 PFID(mdt_object_fid(o)), lease_broken);
2007 /* Cancel server side lease. Client side counterpart should
2008 * have been cancelled. It's okay to cancel it now as we've
2009 * held mot_open_sem. */
2010 ldlm_lock_cancel(lease);
2013 GOTO(out_unlock_sem, rc = -ESTALE);
2015 mdt_lock_reg_init(lh1, LCK_EX);
2016 rc = mdt_object_lock(info, o1, lh1, MDS_INODELOCK_LAYOUT |
2017 MDS_INODELOCK_XATTR);
2019 GOTO(out_unlock_sem, rc);
2021 mdt_lock_reg_init(lh2, LCK_EX);
2022 rc = mdt_object_lock(info, o2, lh2, MDS_INODELOCK_LAYOUT |
2023 MDS_INODELOCK_XATTR);
2025 GOTO(out_unlock1, rc);
2027 /* Swap layout with orphan object */
2028 if (ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SWAP) {
2029 rc = mo_swap_layouts(info->mti_env, mdt_object_child(o1),
2030 mdt_object_child(o2), 0);
2031 } else if (ma->ma_attr_flags & MDS_CLOSE_LAYOUT_MERGE ||
2032 ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT) {
2033 struct lu_buf *buf = &info->mti_buf;
2034 struct md_rejig_data mrd;
2036 mrd.mrd_obj = mdt_object_child(o == o1 ? o2 : o1);
2037 if (ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT)
2038 mrd.mrd_mirror_id = data->cd_mirror_id;
2040 buf->lb_len = sizeof(mrd);
2042 rc = mo_xattr_set(info->mti_env, mdt_object_child(o), buf,
2044 ma->ma_attr_flags & MDS_CLOSE_LAYOUT_SPLIT ?
2045 LU_XATTR_SPLIT : LU_XATTR_MERGE);
2046 if (rc == 0 && ma->ma_attr.la_valid & (LA_SIZE | LA_BLOCKS)) {
2049 mutex_lock(&o->mot_som_mutex);
2050 rc2 = mdt_set_som(info, o, SOM_FL_STRICT,
2051 ma->ma_attr.la_size,
2052 ma->ma_attr.la_blocks);
2053 mutex_unlock(&o->mot_som_mutex);
2055 CERROR(DFID": Setting i_blocks error: %d, "
2056 "i_blocks will be reported wrongly and "
2057 "can only be fixed in next resync\n",
2058 PFID(mdt_object_fid(o)), rc2);
2062 GOTO(out_unlock2, rc);
2067 /* Release exclusive LL */
2068 mdt_object_unlock(info, o2, lh2, 1);
2071 mdt_object_unlock(info, o1, lh1, 1);
2074 up_write(&o->mot_open_sem);
2076 /* already swapped */
2078 struct mdt_body *repbody;
2080 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2081 LASSERT(repbody != NULL);
2082 repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED;
2086 mdt_object_put(info->mti_env, swap_objects ? o1 : o2);
2088 ldlm_reprocess_all(lease->l_resource);
2091 LDLM_LOCK_PUT(lease);
2101 static int mdt_close_resync_done(struct mdt_thread_info *info,
2102 struct mdt_object *o, struct md_attr *ma)
2104 struct close_data *data;
2105 struct ldlm_lock *lease;
2106 struct md_layout_change layout = { 0 };
2107 __u32 *resync_ids = NULL;
2108 size_t resync_count = 0;
2113 if (exp_connect_flags(info->mti_exp) & OBD_CONNECT_RDONLY)
2116 if (!S_ISREG(lu_object_attr(&o->mot_obj)))
2119 data = req_capsule_client_get(info->mti_pill, &RMF_CLOSE_DATA);
2123 if (ptlrpc_req_need_swab(mdt_info_req(info)))
2124 lustre_swab_close_data_resync_done(&data->cd_resync);
2126 if (!fid_is_zero(&data->cd_fid))
2129 lease = ldlm_handle2lock(&data->cd_handle);
2133 /* try to hold open_sem so that nobody else can open the file */
2134 if (!down_write_trylock(&o->mot_open_sem)) {
2135 ldlm_lock_cancel(lease);
2136 GOTO(out_reprocess, rc = -EBUSY);
2139 /* Check if the lease open lease has already canceled */
2140 lock_res_and_lock(lease);
2141 lease_broken = ldlm_is_cancel(lease);
2142 unlock_res_and_lock(lease);
2144 LDLM_DEBUG(lease, DFID " lease broken? %d\n",
2145 PFID(mdt_object_fid(o)), lease_broken);
2147 /* Cancel server side lease. Client side counterpart should
2148 * have been cancelled. It's okay to cancel it now as we've
2149 * held mot_open_sem. */
2150 ldlm_lock_cancel(lease);
2152 if (lease_broken) /* don't perform release task */
2153 GOTO(out_unlock, rc = -ESTALE);
2155 resync_count = data->cd_resync.resync_count;
2157 if (resync_count > INLINE_RESYNC_ARRAY_SIZE) {
2160 if (!req_capsule_has_field(info->mti_pill, &RMF_U32,
2162 GOTO(out_unlock, rc = -EPROTO);
2164 OBD_ALLOC(resync_ids, resync_count * sizeof(__u32));
2166 GOTO(out_unlock, rc = -ENOMEM);
2168 data = req_capsule_client_get(info->mti_pill, &RMF_U32);
2169 memcpy(resync_ids, data, resync_count * sizeof(__u32));
2171 layout.mlc_resync_ids = resync_ids;
2173 layout.mlc_resync_ids = data->cd_resync.resync_ids_inline;
2176 layout.mlc_opc = MD_LAYOUT_RESYNC_DONE;
2177 layout.mlc_resync_count = resync_count;
2178 if (ma->ma_attr.la_valid & (LA_SIZE | LA_BLOCKS)) {
2179 layout.mlc_som.lsa_valid = SOM_FL_STRICT;
2180 layout.mlc_som.lsa_size = ma->ma_attr.la_size;
2181 layout.mlc_som.lsa_blocks = ma->ma_attr.la_blocks;
2183 rc = mdt_layout_change(info, o, &layout);
2185 GOTO(out_unlock, rc);
2190 up_write(&o->mot_open_sem);
2192 /* already released */
2194 struct mdt_body *repbody;
2196 repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
2197 LASSERT(repbody != NULL);
2198 repbody->mbo_valid |= OBD_MD_CLOSE_INTENT_EXECED;
2202 OBD_FREE(resync_ids, resync_count * sizeof(__u32));
2205 ldlm_reprocess_all(lease->l_resource);
2206 LDLM_LOCK_PUT(lease);
2214 #define MFD_CLOSED(mode) ((mode) == MDS_FMODE_CLOSED)
2215 static int mdt_mfd_closed(struct mdt_file_data *mfd)
2217 return ((mfd == NULL) || MFD_CLOSED(mfd->mfd_mode));
2220 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd)
2222 struct mdt_object *o = mfd->mfd_object;
2223 struct md_object *next = mdt_object_child(o);
2224 struct md_attr *ma = &info->mti_attr;
2225 struct lu_fid *ofid = &info->mti_tmp_fid1;
2229 bool discard = false;
2233 mode = mfd->mfd_mode;
2234 intent = ma->ma_attr_flags & MDS_CLOSE_INTENT;
2235 *ofid = *mdt_object_fid(o);
2237 CDEBUG(D_INODE, "%s: close file "DFID" with intent: %llx\n",
2238 mdt_obd_name(info->mti_mdt), PFID(ofid), intent);
2241 case MDS_HSM_RELEASE: {
2242 rc = mdt_hsm_release(info, o, ma);
2244 CDEBUG(D_HSM, "%s: File " DFID " release failed: %d\n",
2245 mdt_obd_name(info->mti_mdt),
2247 /* continue to close even error occurred. */
2251 case MDS_CLOSE_LAYOUT_MERGE:
2252 case MDS_CLOSE_LAYOUT_SPLIT:
2253 case MDS_CLOSE_LAYOUT_SWAP: {
2254 rc = mdt_close_handle_layouts(info, o, ma);
2257 "%s: cannot swap layout of "DFID": rc = %d\n",
2258 mdt_obd_name(info->mti_mdt),
2260 /* continue to close even if error occurred. */
2264 case MDS_CLOSE_RESYNC_DONE:
2265 rc = mdt_close_resync_done(info, o, ma);
2272 if (S_ISREG(lu_object_attr(&o->mot_obj)) &&
2273 ma->ma_attr.la_valid & (LA_LSIZE | LA_LBLOCKS)) {
2276 rc2 = mdt_lsom_update(info, o, false);
2279 "%s: File " DFID " LSOM failed: rc = %d\n",
2280 mdt_obd_name(info->mti_mdt),
2282 /* continue to close even if error occured. */
2285 if (mode & MDS_FMODE_WRITE)
2287 else if (mode & MDS_FMODE_EXEC)
2290 /* Update atime on close only. */
2291 if ((mode & MDS_FMODE_EXEC || mode & MDS_FMODE_READ ||
2292 mode & MDS_FMODE_WRITE) && (ma->ma_valid & MA_INODE) &&
2293 (ma->ma_attr.la_valid & LA_ATIME)) {
2294 /* Set the atime only. */
2295 ma->ma_valid = MA_INODE;
2296 ma->ma_attr.la_valid = LA_ATIME;
2297 rc = mo_attr_set(info->mti_env, next, ma);
2300 /* If file data is modified, add the dirty flag. */
2301 if (ma->ma_attr_flags & MDS_DATA_MODIFIED)
2302 rc = mdt_add_dirty_flag(info, o, ma);
2304 ma->ma_need |= MA_INODE;
2305 ma->ma_valid &= ~MA_INODE;
2307 LASSERT(atomic_read(&o->mot_open_count) > 0);
2308 atomic_dec(&o->mot_open_count);
2309 mdt_handle_last_unlink(info, o, ma);
2311 if (!MFD_CLOSED(mode)) {
2312 rc = mo_close(info->mti_env, next, ma, mode);
2313 discard = mdt_dom_check_for_discard(info, o);
2316 /* adjust open and lease count */
2317 if (mode & MDS_OPEN_LEASE) {
2318 LASSERT(atomic_read(&o->mot_lease_count) > 0);
2319 atomic_dec(&o->mot_lease_count);
2323 mdt_object_put(info->mti_env, o);
2326 mdt_dom_discard_data(info, ofid);
2331 int mdt_close_internal(struct mdt_thread_info *info, struct ptlrpc_request *req,
2332 struct mdt_body *repbody)
2334 struct mdt_export_data *med;
2335 struct mdt_file_data *mfd;
2340 med = &req->rq_export->exp_mdt_data;
2341 spin_lock(&med->med_open_lock);
2342 mfd = mdt_handle2mfd(med, &info->mti_close_handle, req_is_replay(req));
2343 if (mdt_mfd_closed(mfd)) {
2344 spin_unlock(&med->med_open_lock);
2345 CDEBUG(D_INODE, "no handle for file close: fid = "DFID
2346 ": cookie = %#llx\n", PFID(info->mti_rr.rr_fid1),
2347 info->mti_close_handle.cookie);
2348 /** not serious error since bug 3633 */
2351 class_handle_unhash(&mfd->mfd_handle);
2352 list_del_init(&mfd->mfd_list);
2353 spin_unlock(&med->med_open_lock);
2354 ret = mdt_mfd_close(info, mfd);
2357 RETURN(rc ? rc : ret);
2360 int mdt_close(struct tgt_session_info *tsi)
2362 struct mdt_thread_info *info = tsi2mdt_info(tsi);
2363 struct ptlrpc_request *req = tgt_ses_req(tsi);
2364 struct md_attr *ma = &info->mti_attr;
2365 struct mdt_body *repbody = NULL;
2369 mdt_counter_incr(req, LPROC_MDT_CLOSE);
2370 /* Close may come with the Size-on-MDS update. Unpack it. */
2371 rc = mdt_close_unpack(info);
2373 GOTO(out, rc = err_serious(rc));
2375 /* These fields are no longer used and are left for compatibility.
2376 * size is always zero */
2377 req_capsule_set_size(info->mti_pill, &RMF_MDT_MD, RCL_SERVER,
2379 req_capsule_set_size(info->mti_pill, &RMF_LOGCOOKIES, RCL_SERVER,
2381 rc = req_capsule_server_pack(info->mti_pill);
2382 if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) {
2383 mdt_client_compatibility(info);
2385 mdt_fix_reply(info);
2386 mdt_exit_ucred(info);
2387 GOTO(out, rc = lustre_msg_get_status(req->rq_repmsg));
2390 /* Continue to close handle even if we can not pack reply */
2392 repbody = req_capsule_server_get(info->mti_pill,
2394 ma->ma_lmm = req_capsule_server_get(info->mti_pill,
2396 ma->ma_lmm_size = req_capsule_get_size(info->mti_pill,
2399 ma->ma_need = MA_INODE | MA_LOV;
2400 repbody->mbo_eadatasize = 0;
2401 repbody->mbo_aclsize = 0;
2403 rc = err_serious(rc);
2406 rc = mdt_close_internal(info, req, repbody);
2408 mdt_empty_transno(info, rc);
2410 if (repbody != NULL) {
2411 mdt_client_compatibility(info);
2412 rc = mdt_fix_reply(info);
2415 mdt_exit_ucred(info);
2416 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_CLOSE_PACK))
2417 GOTO(out, rc = err_serious(-ENOMEM));
2419 if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MDS_CLOSE_NET_REP,
2420 OBD_FAIL_MDS_CLOSE_NET_REP))
2421 tsi->tsi_reply_fail_id = OBD_FAIL_MDS_CLOSE_NET_REP;
2423 mdt_thread_info_fini(info);
2424 RETURN(rc ? rc : ret);