4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/mdd/mdd_dir.c
38 * Lustre Metadata Server (mdd) routines
40 * Author: Wang Di <wangdi@intel.com>
43 #define DEBUG_SUBSYSTEM S_MDS
45 #include <obd_class.h>
46 #include <obd_support.h>
47 #include <lustre_mds.h>
48 #include <lustre_fid.h>
50 #include "mdd_internal.h"
52 static const char dot[] = ".";
53 static const char dotdot[] = "..";
55 static struct lu_name lname_dotdot = {
60 static int __mdd_lookup(const struct lu_env *, struct md_object *,
61 const struct lu_name *, struct lu_fid*, int);
64 __mdd_lookup_locked(const struct lu_env *env, struct md_object *pobj,
65 const struct lu_name *lname, struct lu_fid* fid, int mask)
67 const char *name = lname->ln_name;
68 struct mdd_object *mdd_obj = md2mdd_obj(pobj);
69 struct dynlock_handle *dlh;
72 dlh = mdd_pdo_read_lock(env, mdd_obj, name, MOR_TGT_PARENT);
73 if (unlikely(dlh == NULL))
75 rc = __mdd_lookup(env, pobj, lname, fid, mask);
76 mdd_pdo_read_unlock(env, mdd_obj, dlh);
81 int mdd_lookup(const struct lu_env *env,
82 struct md_object *pobj, const struct lu_name *lname,
83 struct lu_fid* fid, struct md_op_spec *spec)
87 rc = __mdd_lookup_locked(env, pobj, lname, fid, MAY_EXEC);
91 int mdd_parent_fid(const struct lu_env *env, struct mdd_object *obj,
94 return __mdd_lookup_locked(env, &obj->mod_obj, &lname_dotdot, fid, 0);
98 * For root fid use special function, which does not compare version component
99 * of fid. Version component is different for root fids on all MDTs.
101 int mdd_is_root(struct mdd_device *mdd, const struct lu_fid *fid)
103 return fid_seq(&mdd->mdd_root_fid) == fid_seq(fid) &&
104 fid_oid(&mdd->mdd_root_fid) == fid_oid(fid);
108 * return 1: if lf is the fid of the ancestor of p1;
111 * return -EREMOTE: if remote object is found, in this
112 * case fid of remote object is saved to @pf;
114 * otherwise: values < 0, errors.
116 static int mdd_is_parent(const struct lu_env *env,
117 struct mdd_device *mdd,
118 struct mdd_object *p1,
119 const struct lu_fid *lf,
122 struct mdd_object *parent = NULL;
127 LASSERT(!lu_fid_eq(mdo2fid(p1), lf));
128 pfid = &mdd_env_info(env)->mti_fid;
130 /* Check for root first. */
131 if (mdd_is_root(mdd, mdo2fid(p1)))
135 /* this is done recursively, bypass capa for each obj */
136 mdd_set_capainfo(env, 4, p1, BYPASS_CAPA);
137 rc = mdd_parent_fid(env, p1, pfid);
140 if (mdd_is_root(mdd, pfid))
142 if (lu_fid_eq(pfid, lf))
145 mdd_object_put(env, parent);
147 parent = mdd_object_find(env, mdd, pfid);
148 if (IS_ERR(parent)) {
149 GOTO(out, rc = PTR_ERR(parent));
150 } else if (mdd_object_remote(parent)) {
151 /*FIXME: Because of the restriction of rename in Phase I.
152 * If the parent is remote, we just assumed lf is not the
153 * parent of P1 for now */
160 if (parent && !IS_ERR(parent))
161 mdd_object_put(env, parent);
166 * No permission check is needed.
168 * returns 1: if fid is ancestor of @mo;
169 * returns 0: if fid is not a ancestor of @mo;
171 * returns EREMOTE if remote object is found, fid of remote object is saved to
174 * returns < 0: if error
176 int mdd_is_subdir(const struct lu_env *env, struct md_object *mo,
177 const struct lu_fid *fid, struct lu_fid *sfid)
179 struct mdd_device *mdd = mdo2mdd(mo);
183 if (!S_ISDIR(mdd_object_type(md2mdd_obj(mo))))
186 rc = mdd_is_parent(env, mdd, md2mdd_obj(mo), fid, sfid);
190 } else if (rc == 1) {
191 /* found @fid is parent */
199 * Check that @dir contains no entries except (possibly) dot and dotdot.
204 * -ENOTDIR not a directory object
205 * -ENOTEMPTY not empty
209 static int mdd_dir_is_empty(const struct lu_env *env,
210 struct mdd_object *dir)
213 struct dt_object *obj;
214 const struct dt_it_ops *iops;
218 obj = mdd_object_child(dir);
219 if (!dt_try_as_dir(env, obj))
222 iops = &obj->do_index_ops->dio_it;
223 it = iops->init(env, obj, LUDA_64BITHASH, BYPASS_CAPA);
225 result = iops->get(env, it, (const void *)"");
228 for (result = 0, i = 0; result == 0 && i < 3; ++i)
229 result = iops->next(env, it);
232 else if (result == +1)
234 } else if (result == 0)
236 * Huh? Index contains no zero key?
243 result = PTR_ERR(it);
247 static int __mdd_may_link(const struct lu_env *env, struct mdd_object *obj)
249 struct mdd_device *m = mdd_obj2mdd_dev(obj);
250 struct lu_attr *la = &mdd_env_info(env)->mti_la;
254 rc = mdd_la_get(env, obj, la, BYPASS_CAPA);
259 * Subdir count limitation can be broken through.
261 if (la->la_nlink >= m->mdd_dt_conf.ddp_max_nlink &&
262 !S_ISDIR(la->la_mode))
269 * Check whether it may create the cobj under the pobj.
272 int mdd_may_create(const struct lu_env *env, struct mdd_object *pobj,
273 struct mdd_object *cobj, int check_perm, int check_nlink)
278 if (cobj && mdd_object_exists(cobj))
281 if (mdd_is_dead_obj(pobj))
285 rc = mdd_permission_internal_locked(env, pobj, NULL,
286 MAY_WRITE | MAY_EXEC,
288 if (!rc && check_nlink)
289 rc = __mdd_may_link(env, pobj);
295 * Check whether can unlink from the pobj in the case of "cobj == NULL".
297 int mdd_may_unlink(const struct lu_env *env, struct mdd_object *pobj,
298 const struct lu_attr *attr)
303 if (mdd_is_dead_obj(pobj))
306 if ((attr->la_valid & LA_FLAGS) &&
307 (attr->la_flags & (LUSTRE_APPEND_FL | LUSTRE_IMMUTABLE_FL)))
310 rc = mdd_permission_internal_locked(env, pobj, NULL,
311 MAY_WRITE | MAY_EXEC,
316 if (mdd_is_append(pobj))
323 * pobj == NULL is remote ops case, under such case, pobj's
324 * VTX feature has been checked already, no need check again.
326 static inline int mdd_is_sticky(const struct lu_env *env,
327 struct mdd_object *pobj,
328 struct mdd_object *cobj)
330 struct lu_attr *tmp_la = &mdd_env_info(env)->mti_la;
331 struct lu_ucred *uc = lu_ucred_assert(env);
335 rc = mdd_la_get(env, pobj, tmp_la, BYPASS_CAPA);
339 if (!(tmp_la->la_mode & S_ISVTX) ||
340 (tmp_la->la_uid == uc->uc_fsuid))
344 rc = mdd_la_get(env, cobj, tmp_la, BYPASS_CAPA);
348 if (tmp_la->la_uid == uc->uc_fsuid)
351 return !md_capable(uc, CFS_CAP_FOWNER);
354 static int mdd_may_delete_entry(const struct lu_env *env,
355 struct mdd_object *pobj, int check_perm)
359 LASSERT(pobj != NULL);
360 if (!mdd_object_exists(pobj))
363 if (mdd_is_dead_obj(pobj))
368 rc = mdd_permission_internal_locked(env, pobj, NULL,
369 MAY_WRITE | MAY_EXEC,
375 if (mdd_is_append(pobj))
382 * Check whether it may delete the cobj from the pobj.
385 int mdd_may_delete(const struct lu_env *env, struct mdd_object *pobj,
386 struct mdd_object *cobj, struct lu_attr *cattr,
387 struct lu_attr *src_attr, int check_perm, int check_empty)
393 rc = mdd_may_delete_entry(env, pobj, check_perm);
401 if (!mdd_object_exists(cobj))
404 if (mdd_is_dead_obj(cobj))
408 if (mdd_is_sticky(env, pobj, cobj))
411 if (mdd_is_immutable(cobj) || mdd_is_append(cobj))
414 if ((cattr->la_valid & LA_FLAGS) &&
415 (cattr->la_flags & (LUSTRE_APPEND_FL | LUSTRE_IMMUTABLE_FL)))
418 /* additional check the rename case */
420 if (S_ISDIR(src_attr->la_mode)) {
421 struct mdd_device *mdd = mdo2mdd(&cobj->mod_obj);
423 if (!S_ISDIR(cattr->la_mode))
426 if (lu_fid_eq(mdo2fid(cobj), &mdd->mdd_root_fid))
428 } else if (S_ISDIR(cattr->la_mode))
432 if (S_ISDIR(cattr->la_mode) && check_empty)
433 rc = mdd_dir_is_empty(env, cobj);
440 * has mdd_write_lock on src already, but not on tgt yet
442 int mdd_link_sanity_check(const struct lu_env *env,
443 struct mdd_object *tgt_obj,
444 const struct lu_name *lname,
445 struct mdd_object *src_obj)
447 struct mdd_device *m = mdd_obj2mdd_dev(src_obj);
451 if (!mdd_object_exists(src_obj))
454 if (mdd_is_dead_obj(src_obj))
457 /* Local ops, no lookup before link, check filename length here. */
458 if (lname && (lname->ln_namelen > m->mdd_dt_conf.ddp_max_name_len))
459 RETURN(-ENAMETOOLONG);
461 if (mdd_is_immutable(src_obj) || mdd_is_append(src_obj))
464 if (S_ISDIR(mdd_object_type(src_obj)))
467 LASSERT(src_obj != tgt_obj);
469 rc = mdd_may_create(env, tgt_obj, NULL, 1, 0);
474 rc = __mdd_may_link(env, src_obj);
479 static int __mdd_index_delete_only(const struct lu_env *env, struct mdd_object *pobj,
480 const char *name, struct thandle *handle,
481 struct lustre_capa *capa)
483 struct dt_object *next = mdd_object_child(pobj);
487 if (dt_try_as_dir(env, next)) {
488 rc = next->do_index_ops->dio_delete(env, next,
489 (struct dt_key *)name,
497 static int __mdd_index_insert_only(const struct lu_env *env,
498 struct mdd_object *pobj,
499 const struct lu_fid *lf, const char *name,
500 struct thandle *handle,
501 struct lustre_capa *capa)
503 struct dt_object *next = mdd_object_child(pobj);
507 if (dt_try_as_dir(env, next)) {
508 struct lu_ucred *uc = lu_ucred_check(env);
511 ignore_quota = uc ? uc->uc_cap & CFS_CAP_SYS_RESOURCE_MASK : 1;
512 rc = next->do_index_ops->dio_insert(env, next,
514 (const struct dt_key *)name,
515 handle, capa, ignore_quota);
522 /* insert named index, add reference if isdir */
523 static int __mdd_index_insert(const struct lu_env *env, struct mdd_object *pobj,
524 const struct lu_fid *lf, const char *name, int is_dir,
525 struct thandle *handle, struct lustre_capa *capa)
530 rc = __mdd_index_insert_only(env, pobj, lf, name, handle, capa);
531 if (rc == 0 && is_dir) {
532 mdd_write_lock(env, pobj, MOR_TGT_PARENT);
533 mdo_ref_add(env, pobj, handle);
534 mdd_write_unlock(env, pobj);
539 /* delete named index, drop reference if isdir */
540 static int __mdd_index_delete(const struct lu_env *env, struct mdd_object *pobj,
541 const char *name, int is_dir, struct thandle *handle,
542 struct lustre_capa *capa)
547 rc = __mdd_index_delete_only(env, pobj, name, handle, capa);
548 if (rc == 0 && is_dir) {
549 mdd_write_lock(env, pobj, MOR_TGT_PARENT);
550 mdo_ref_del(env, pobj, handle);
551 mdd_write_unlock(env, pobj);
557 int mdd_declare_changelog_store(const struct lu_env *env,
558 struct mdd_device *mdd,
559 const struct lu_name *fname,
560 struct thandle *handle)
562 struct obd_device *obd = mdd2obd_dev(mdd);
563 struct llog_ctxt *ctxt;
564 struct llog_changelog_rec *rec;
570 if (!(mdd->mdd_cl.mc_flags & CLM_ON))
573 reclen = llog_data_len(sizeof(*rec) +
574 (fname != NULL ? fname->ln_namelen : 0));
575 buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_big_buf, reclen);
576 if (buf->lb_buf == NULL)
580 rec->cr_hdr.lrh_len = reclen;
581 rec->cr_hdr.lrh_type = CHANGELOG_REC;
583 ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
587 rc = llog_declare_add(env, ctxt->loc_handle, &rec->cr_hdr, handle);
593 static int mdd_declare_changelog_ext_store(const struct lu_env *env,
594 struct mdd_device *mdd,
595 const struct lu_name *tname,
596 const struct lu_name *sname,
597 struct thandle *handle)
599 struct obd_device *obd = mdd2obd_dev(mdd);
600 struct llog_ctxt *ctxt;
601 struct llog_changelog_ext_rec *rec;
607 if (!(mdd->mdd_cl.mc_flags & CLM_ON))
610 reclen = llog_data_len(sizeof(*rec) +
611 (tname != NULL ? tname->ln_namelen : 0) +
612 (sname != NULL ? 1 + sname->ln_namelen : 0));
613 buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_big_buf, reclen);
614 if (buf->lb_buf == NULL)
618 rec->cr_hdr.lrh_len = reclen;
619 rec->cr_hdr.lrh_type = CHANGELOG_REC;
621 ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
625 rc = llog_declare_add(env, ctxt->loc_handle, &rec->cr_hdr, handle);
631 /** Add a changelog entry \a rec to the changelog llog
634 * \param handle - currently ignored since llogs start their own transaction;
635 * this will hopefully be fixed in llog rewrite
638 int mdd_changelog_store(const struct lu_env *env, struct mdd_device *mdd,
639 struct llog_changelog_rec *rec, struct thandle *th)
641 struct obd_device *obd = mdd2obd_dev(mdd);
642 struct llog_ctxt *ctxt;
645 rec->cr_hdr.lrh_len = llog_data_len(sizeof(*rec) + rec->cr.cr_namelen);
646 rec->cr_hdr.lrh_type = CHANGELOG_REC;
647 rec->cr.cr_time = cl_time();
649 spin_lock(&mdd->mdd_cl.mc_lock);
650 /* NB: I suppose it's possible llog_add adds out of order wrt cr_index,
651 * but as long as the MDD transactions are ordered correctly for e.g.
652 * rename conflicts, I don't think this should matter. */
653 rec->cr.cr_index = ++mdd->mdd_cl.mc_index;
654 spin_unlock(&mdd->mdd_cl.mc_lock);
656 ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
660 rc = llog_add(env, ctxt->loc_handle, &rec->cr_hdr, NULL, NULL, th);
667 /** Add a changelog_ext entry \a rec to the changelog llog
670 * \param handle - currently ignored since llogs start their own transaction;
671 * this will hopefully be fixed in llog rewrite
674 int mdd_changelog_ext_store(const struct lu_env *env, struct mdd_device *mdd,
675 struct llog_changelog_ext_rec *rec,
678 struct obd_device *obd = mdd2obd_dev(mdd);
679 struct llog_ctxt *ctxt;
682 rec->cr_hdr.lrh_len = llog_data_len(sizeof(*rec) + rec->cr.cr_namelen);
683 /* llog_lvfs_write_rec sets the llog tail len */
684 rec->cr_hdr.lrh_type = CHANGELOG_REC;
685 rec->cr.cr_time = cl_time();
687 spin_lock(&mdd->mdd_cl.mc_lock);
688 /* NB: I suppose it's possible llog_add adds out of order wrt cr_index,
689 * but as long as the MDD transactions are ordered correctly for e.g.
690 * rename conflicts, I don't think this should matter. */
691 rec->cr.cr_index = ++mdd->mdd_cl.mc_index;
692 spin_unlock(&mdd->mdd_cl.mc_lock);
694 ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
698 /* nested journal transaction */
699 rc = llog_add(env, ctxt->loc_handle, &rec->cr_hdr, NULL, NULL, th);
707 /** Store a namespace change changelog record
708 * If this fails, we must fail the whole transaction; we don't
709 * want the change to commit without the log entry.
710 * \param target - mdd_object of change
711 * \param parent - parent dir/object
712 * \param tname - target name string
713 * \param handle - transacion handle
715 int mdd_changelog_ns_store(const struct lu_env *env, struct mdd_device *mdd,
716 enum changelog_rec_type type, unsigned flags,
717 struct mdd_object *target, struct mdd_object *parent,
718 const struct lu_name *tname, struct thandle *handle)
720 struct llog_changelog_rec *rec;
727 if (!(mdd->mdd_cl.mc_flags & CLM_ON))
729 if ((mdd->mdd_cl.mc_mask & (1 << type)) == 0)
732 LASSERT(target != NULL);
733 LASSERT(parent != NULL);
734 LASSERT(tname != NULL);
735 LASSERT(handle != NULL);
737 reclen = llog_data_len(sizeof(*rec) + tname->ln_namelen);
738 buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_big_buf, reclen);
739 if (buf->lb_buf == NULL)
743 rec->cr.cr_flags = CLF_VERSION | (CLF_FLAGMASK & flags);
744 rec->cr.cr_type = (__u32)type;
745 rec->cr.cr_tfid = *mdo2fid(target);
746 rec->cr.cr_pfid = *mdo2fid(parent);
747 rec->cr.cr_namelen = tname->ln_namelen;
748 memcpy(rec->cr.cr_name, tname->ln_name, tname->ln_namelen);
750 target->mod_cltime = cfs_time_current_64();
752 rc = mdd_changelog_store(env, mdd, rec, handle);
754 CERROR("changelog failed: rc=%d, op%d %s c"DFID" p"DFID"\n",
755 rc, type, tname->ln_name, PFID(&rec->cr.cr_tfid),
756 PFID(&rec->cr.cr_pfid));
764 /** Store a namespace change changelog record
765 * If this fails, we must fail the whole transaction; we don't
766 * want the change to commit without the log entry.
767 * \param target - mdd_object of change
768 * \param tpfid - target parent dir/object fid
769 * \param sfid - source object fid
770 * \param spfid - source parent fid
771 * \param tname - target name string
772 * \param sname - source name string
773 * \param handle - transacion handle
775 static int mdd_changelog_ext_ns_store(const struct lu_env *env,
776 struct mdd_device *mdd,
777 enum changelog_rec_type type,
779 struct mdd_object *target,
780 const struct lu_fid *tpfid,
781 const struct lu_fid *sfid,
782 const struct lu_fid *spfid,
783 const struct lu_name *tname,
784 const struct lu_name *sname,
785 struct thandle *handle)
787 struct llog_changelog_ext_rec *rec;
794 if (!(mdd->mdd_cl.mc_flags & CLM_ON))
796 if ((mdd->mdd_cl.mc_mask & (1 << type)) == 0)
799 LASSERT(sfid != NULL);
800 LASSERT(tpfid != NULL);
801 LASSERT(tname != NULL);
802 LASSERT(handle != NULL);
804 reclen = llog_data_len(sizeof(*rec) +
805 sname != NULL ? 1 + sname->ln_namelen : 0);
806 buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_big_buf, reclen);
807 if (buf->lb_buf == NULL)
811 rec->cr.cr_flags = CLF_EXT_VERSION | (CLF_FLAGMASK & flags);
812 rec->cr.cr_type = (__u32)type;
813 rec->cr.cr_pfid = *tpfid;
814 rec->cr.cr_sfid = *sfid;
815 rec->cr.cr_spfid = *spfid;
816 rec->cr.cr_namelen = tname->ln_namelen;
817 memcpy(rec->cr.cr_name, tname->ln_name, tname->ln_namelen);
819 rec->cr.cr_name[tname->ln_namelen] = '\0';
820 memcpy(rec->cr.cr_name + tname->ln_namelen + 1, sname->ln_name,
822 rec->cr.cr_namelen += 1 + sname->ln_namelen;
825 if (likely(target != NULL)) {
826 rec->cr.cr_tfid = *mdo2fid(target);
827 target->mod_cltime = cfs_time_current_64();
829 fid_zero(&rec->cr.cr_tfid);
832 rc = mdd_changelog_ext_store(env, mdd, rec, handle);
834 CERROR("changelog failed: rc=%d, op%d %s c"DFID" p"DFID"\n",
835 rc, type, tname->ln_name, PFID(sfid), PFID(tpfid));
842 static int __mdd_links_add(const struct lu_env *env,
843 struct mdd_object *mdd_obj,
844 struct linkea_data *ldata,
845 const struct lu_name *lname,
846 const struct lu_fid *pfid,
847 int first, int check)
851 if (ldata->ld_leh == NULL) {
852 rc = first ? -ENODATA : mdd_links_read(env, mdd_obj, ldata);
856 rc = linkea_data_new(ldata,
857 &mdd_env_info(env)->mti_link_buf);
864 rc = linkea_links_find(ldata, lname, pfid);
865 if (rc && rc != -ENOENT)
871 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LINKEA_MORE)) {
872 struct lu_fid *tfid = &mdd_env_info(env)->mti_fid2;
876 linkea_add_buf(ldata, lname, tfid);
879 return linkea_add_buf(ldata, lname, pfid);
882 static int __mdd_links_del(const struct lu_env *env,
883 struct mdd_object *mdd_obj,
884 struct linkea_data *ldata,
885 const struct lu_name *lname,
886 const struct lu_fid *pfid)
890 if (ldata->ld_leh == NULL) {
891 rc = mdd_links_read(env, mdd_obj, ldata);
896 rc = linkea_links_find(ldata, lname, pfid);
900 linkea_del_buf(ldata, lname);
904 static int mdd_linkea_prepare(const struct lu_env *env,
905 struct mdd_object *mdd_obj,
906 const struct lu_fid *oldpfid,
907 const struct lu_name *oldlname,
908 const struct lu_fid *newpfid,
909 const struct lu_name *newlname,
910 int first, int check,
911 struct linkea_data *ldata)
917 if (OBD_FAIL_CHECK(OBD_FAIL_FID_IGIF))
920 LASSERT(oldpfid != NULL || newpfid != NULL);
922 if (mdd_obj->mod_flags & DEAD_OBJ)
923 /* No more links, don't bother */
926 if (oldpfid != NULL) {
927 rc = __mdd_links_del(env, mdd_obj, ldata, oldlname, oldpfid);
930 (rc != -ENODATA && rc != -ENOENT))
932 /* No changes done. */
937 /* If renaming, add the new record */
938 if (newpfid != NULL) {
939 /* even if the add fails, we still delete the out-of-date
941 rc2 = __mdd_links_add(env, mdd_obj, ldata, newlname, newpfid,
947 rc = rc != 0 ? rc : rc2;
952 int mdd_links_rename(const struct lu_env *env,
953 struct mdd_object *mdd_obj,
954 const struct lu_fid *oldpfid,
955 const struct lu_name *oldlname,
956 const struct lu_fid *newpfid,
957 const struct lu_name *newlname,
958 struct thandle *handle,
959 struct linkea_data *ldata,
960 int first, int check)
967 ldata = &mdd_env_info(env)->mti_link_data;
968 memset(ldata, 0, sizeof(*ldata));
969 rc = mdd_linkea_prepare(env, mdd_obj, oldpfid, oldlname,
970 newpfid, newlname, first, check,
976 if (ldata->ld_lee != NULL)
977 rc = mdd_links_write(env, mdd_obj, ldata, handle);
984 if (rc == -EOVERFLOW || rc == -ENOENT)
987 CDEBUG(error ? D_ERROR : D_OTHER,
988 "link_ea add '%.*s' failed %d "DFID"\n",
989 newlname->ln_namelen, newlname->ln_name,
990 rc, PFID(mdd_object_fid(mdd_obj)));
991 else if (newpfid == NULL)
992 CDEBUG(error ? D_ERROR : D_OTHER,
993 "link_ea del '%.*s' failed %d "DFID"\n",
994 oldlname->ln_namelen, oldlname->ln_name,
995 rc, PFID(mdd_object_fid(mdd_obj)));
997 CDEBUG(error ? D_ERROR : D_OTHER,
998 "link_ea rename '%.*s'->'%.*s' failed %d "
1000 oldlname->ln_namelen, oldlname->ln_name,
1001 newlname->ln_namelen, newlname->ln_name,
1002 rc, PFID(mdd_object_fid(mdd_obj)));
1005 if (ldata->ld_buf && ldata->ld_buf->lb_len > OBD_ALLOC_BIG)
1006 /* if we vmalloced a large buffer drop it */
1007 lu_buf_free(ldata->ld_buf);
1012 static inline int mdd_links_add(const struct lu_env *env,
1013 struct mdd_object *mdd_obj,
1014 const struct lu_fid *pfid,
1015 const struct lu_name *lname,
1016 struct thandle *handle,
1017 struct linkea_data *data, int first)
1019 return mdd_links_rename(env, mdd_obj, NULL, NULL,
1020 pfid, lname, handle, data, first, 0);
1023 static inline int mdd_links_del(const struct lu_env *env,
1024 struct mdd_object *mdd_obj,
1025 const struct lu_fid *pfid,
1026 const struct lu_name *lname,
1027 struct thandle *handle)
1029 return mdd_links_rename(env, mdd_obj, pfid, lname,
1030 NULL, NULL, handle, NULL, 0, 0);
1033 /** Read the link EA into a temp buffer.
1034 * Uses the mdd_thread_info::mti_big_buf since it is generally large.
1035 * A pointer to the buffer is stored in \a ldata::ld_buf.
1037 * \retval 0 or error
1039 int mdd_links_read(const struct lu_env *env, struct mdd_object *mdd_obj,
1040 struct linkea_data *ldata)
1044 /* First try a small buf */
1045 LASSERT(env != NULL);
1046 ldata->ld_buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_link_buf,
1048 if (ldata->ld_buf->lb_buf == NULL)
1051 if (!mdd_object_exists(mdd_obj))
1054 rc = mdo_xattr_get(env, mdd_obj, ldata->ld_buf, XATTR_NAME_LINK,
1056 if (rc == -ERANGE) {
1057 /* Buf was too small, figure out what we need. */
1058 lu_buf_free(ldata->ld_buf);
1059 rc = mdo_xattr_get(env, mdd_obj, ldata->ld_buf,
1060 XATTR_NAME_LINK, BYPASS_CAPA);
1063 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
1064 if (ldata->ld_buf->lb_buf == NULL)
1066 rc = mdo_xattr_get(env, mdd_obj, ldata->ld_buf,
1067 XATTR_NAME_LINK, BYPASS_CAPA);
1076 /** Read the link EA into a temp buffer.
1077 * Uses the name_buf since it is generally large.
1078 * \retval IS_ERR err
1079 * \retval ptr to \a lu_buf (always \a mti_big_buf)
1081 struct lu_buf *mdd_links_get(const struct lu_env *env,
1082 struct mdd_object *mdd_obj)
1084 struct linkea_data ldata = { 0 };
1087 rc = mdd_links_read(env, mdd_obj, &ldata);
1088 return rc ? ERR_PTR(rc) : ldata.ld_buf;
1091 int mdd_links_write(const struct lu_env *env, struct mdd_object *mdd_obj,
1092 struct linkea_data *ldata, struct thandle *handle)
1094 const struct lu_buf *buf = mdd_buf_get_const(env, ldata->ld_buf->lb_buf,
1095 ldata->ld_leh->leh_len);
1096 return mdo_xattr_set(env, mdd_obj, buf, XATTR_NAME_LINK, 0, handle,
1097 mdd_object_capa(env, mdd_obj));
1100 int mdd_declare_links_add(const struct lu_env *env, struct mdd_object *mdd_obj,
1101 struct thandle *handle, struct linkea_data *ldata)
1107 if (ldata != NULL && ldata->ld_lee != NULL) {
1108 ea_len = ldata->ld_leh->leh_len;
1109 linkea = ldata->ld_buf->lb_buf;
1115 /* XXX: max size? */
1116 rc = mdo_declare_xattr_set(env, mdd_obj,
1117 mdd_buf_get_const(env, linkea, ea_len),
1118 XATTR_NAME_LINK, 0, handle);
1122 static inline int mdd_declare_links_del(const struct lu_env *env,
1123 struct mdd_object *c,
1124 struct thandle *handle)
1128 /* For directory, the linkEA will be removed together
1129 * with the object. */
1130 if (!S_ISDIR(mdd_object_type(c)))
1131 rc = mdd_declare_links_add(env, c, handle, NULL);
1136 static int mdd_declare_link(const struct lu_env *env,
1137 struct mdd_device *mdd,
1138 struct mdd_object *p,
1139 struct mdd_object *c,
1140 const struct lu_name *name,
1141 struct thandle *handle,
1143 struct linkea_data *data)
1147 rc = mdo_declare_index_insert(env, p, mdo2fid(c), name->ln_name,handle);
1151 rc = mdo_declare_ref_add(env, c, handle);
1155 la->la_valid = LA_CTIME | LA_MTIME;
1156 rc = mdo_declare_attr_set(env, p, la, handle);
1160 la->la_valid = LA_CTIME;
1161 rc = mdo_declare_attr_set(env, c, la, handle);
1165 rc = mdd_declare_links_add(env, c, handle, data);
1169 rc = mdd_declare_changelog_store(env, mdd, name, handle);
1174 static int mdd_link(const struct lu_env *env, struct md_object *tgt_obj,
1175 struct md_object *src_obj, const struct lu_name *lname,
1178 const char *name = lname->ln_name;
1179 struct lu_attr *la = &mdd_env_info(env)->mti_la_for_fix;
1180 struct mdd_object *mdd_tobj = md2mdd_obj(tgt_obj);
1181 struct mdd_object *mdd_sobj = md2mdd_obj(src_obj);
1182 struct mdd_device *mdd = mdo2mdd(src_obj);
1183 struct dynlock_handle *dlh;
1184 struct thandle *handle;
1185 struct linkea_data *ldata = &mdd_env_info(env)->mti_link_data;
1189 handle = mdd_trans_create(env, mdd);
1191 GOTO(out_pending, rc = PTR_ERR(handle));
1193 memset(ldata, 0, sizeof(*ldata));
1195 LASSERT(ma->ma_attr.la_valid & LA_CTIME);
1196 la->la_ctime = la->la_mtime = ma->ma_attr.la_ctime;
1198 rc = mdd_declare_link(env, mdd, mdd_tobj, mdd_sobj, lname, handle,
1203 rc = mdd_trans_start(env, mdd, handle);
1207 dlh = mdd_pdo_write_lock(env, mdd_tobj, name, MOR_TGT_CHILD);
1209 GOTO(out_trans, rc = -ENOMEM);
1210 mdd_write_lock(env, mdd_sobj, MOR_TGT_CHILD);
1212 rc = mdd_link_sanity_check(env, mdd_tobj, lname, mdd_sobj);
1214 GOTO(out_unlock, rc);
1216 rc = mdo_ref_add(env, mdd_sobj, handle);
1218 GOTO(out_unlock, rc);
1221 rc = __mdd_index_insert_only(env, mdd_tobj, mdo2fid(mdd_sobj),
1223 mdd_object_capa(env, mdd_tobj));
1225 mdo_ref_del(env, mdd_sobj, handle);
1226 GOTO(out_unlock, rc);
1229 la->la_valid = LA_CTIME | LA_MTIME;
1230 rc = mdd_attr_check_set_internal(env, mdd_tobj, la, handle, 0);
1232 GOTO(out_unlock, rc);
1234 la->la_valid = LA_CTIME;
1235 rc = mdd_attr_check_set_internal(env, mdd_sobj, la, handle, 0);
1237 rc = mdd_linkea_prepare(env, mdd_sobj, NULL, NULL,
1238 mdo2fid(mdd_tobj), lname, 0, 0,
1241 mdd_links_add(env, mdd_sobj, mdo2fid(mdd_tobj),
1242 lname, handle, ldata, 0);
1243 /* The failure of links_add should not cause the link
1244 * failure, reset rc here */
1249 mdd_write_unlock(env, mdd_sobj);
1250 mdd_pdo_write_unlock(env, mdd_tobj, dlh);
1253 rc = mdd_changelog_ns_store(env, mdd, CL_HARDLINK, 0, mdd_sobj,
1254 mdd_tobj, lname, handle);
1256 mdd_trans_stop(env, mdd, rc, handle);
1258 if (ldata->ld_buf && ldata->ld_buf->lb_len > OBD_ALLOC_BIG)
1259 /* if we vmalloced a large buffer drop it */
1260 lu_buf_free(ldata->ld_buf);
1265 int mdd_declare_finish_unlink(const struct lu_env *env,
1266 struct mdd_object *obj,
1268 struct thandle *handle)
1272 rc = orph_declare_index_insert(env, obj, mdd_object_type(obj), handle);
1276 return mdo_declare_destroy(env, obj, handle);
1279 /* caller should take a lock before calling */
1280 int mdd_finish_unlink(const struct lu_env *env,
1281 struct mdd_object *obj, struct md_attr *ma,
1285 int is_dir = S_ISDIR(ma->ma_attr.la_mode);
1288 LASSERT(mdd_write_locked(env, obj) != 0);
1290 if (rc == 0 && (ma->ma_attr.la_nlink == 0 || is_dir)) {
1291 obj->mod_flags |= DEAD_OBJ;
1292 /* add new orphan and the object
1293 * will be deleted during mdd_close() */
1294 if (obj->mod_count) {
1295 rc = __mdd_orphan_add(env, obj, th);
1297 CDEBUG(D_HA, "Object "DFID" is inserted into "
1298 "orphan list, open count = %d\n",
1299 PFID(mdd_object_fid(obj)),
1302 CERROR("Object "DFID" fail to be an orphan, "
1303 "open count = %d, maybe cause failed "
1305 PFID(mdd_object_fid(obj)),
1308 rc = mdo_destroy(env, obj, th);
1317 * has mdd_write_lock on cobj already, but not on pobj yet
1319 int mdd_unlink_sanity_check(const struct lu_env *env, struct mdd_object *pobj,
1320 struct mdd_object *cobj, struct lu_attr *cattr)
1325 rc = mdd_may_delete(env, pobj, cobj, cattr, NULL, 1, 1);
1330 static int mdd_declare_unlink(const struct lu_env *env, struct mdd_device *mdd,
1331 struct mdd_object *p, struct mdd_object *c,
1332 const struct lu_name *name, struct md_attr *ma,
1333 struct thandle *handle, int no_name)
1335 struct lu_attr *la = &mdd_env_info(env)->mti_la_for_fix;
1338 if (likely(no_name == 0)) {
1339 rc = mdo_declare_index_delete(env, p, name->ln_name, handle);
1344 rc = mdo_declare_ref_del(env, p, handle);
1348 LASSERT(ma->ma_attr.la_valid & LA_CTIME);
1349 la->la_ctime = la->la_mtime = ma->ma_attr.la_ctime;
1350 la->la_valid = LA_CTIME | LA_MTIME;
1351 rc = mdo_declare_attr_set(env, p, la, handle);
1356 rc = mdo_declare_ref_del(env, c, handle);
1360 rc = mdo_declare_ref_del(env, c, handle);
1364 la->la_valid = LA_CTIME;
1365 rc = mdo_declare_attr_set(env, c, la, handle);
1369 rc = mdd_declare_finish_unlink(env, c, ma, handle);
1373 rc = mdd_declare_links_del(env, c, handle);
1377 /* FIXME: need changelog for remove entry */
1378 rc = mdd_declare_changelog_store(env, mdd, name, handle);
1385 * Delete name entry and the object.
1386 * Note: no_name == 1 means it only destory the object, i.e. name_entry
1387 * does not exist for this object, and it could only happen during resending
1388 * of remote unlink. see the comments in mdt_reint_unlink. Unfortunately, lname
1389 * is also needed in this case(needed by changelog), so we have to add another
1390 * parameter(no_name)here. XXX: this is only needed in DNE phase I, on Phase II,
1391 * the ENOENT failure should be able to be fixed by redo mechanism.
1393 static int mdd_unlink(const struct lu_env *env, struct md_object *pobj,
1394 struct md_object *cobj, const struct lu_name *lname,
1395 struct md_attr *ma, int no_name)
1397 const char *name = lname->ln_name;
1398 struct lu_attr *cattr = &mdd_env_info(env)->mti_cattr;
1399 struct lu_attr *la = &mdd_env_info(env)->mti_la_for_fix;
1400 struct mdd_object *mdd_pobj = md2mdd_obj(pobj);
1401 struct mdd_object *mdd_cobj = NULL;
1402 struct mdd_device *mdd = mdo2mdd(pobj);
1403 struct dynlock_handle *dlh;
1404 struct thandle *handle;
1408 /* cobj == NULL means only delete name entry */
1409 if (likely(cobj != NULL)) {
1410 mdd_cobj = md2mdd_obj(cobj);
1411 if (mdd_object_exists(mdd_cobj) == 0)
1413 /* currently it is assume, it could only delete
1414 * name entry of remote directory */
1418 handle = mdd_trans_create(env, mdd);
1420 RETURN(PTR_ERR(handle));
1422 rc = mdd_declare_unlink(env, mdd, mdd_pobj, mdd_cobj,
1423 lname, ma, handle, no_name);
1427 rc = mdd_trans_start(env, mdd, handle);
1431 dlh = mdd_pdo_write_lock(env, mdd_pobj, name, MOR_TGT_PARENT);
1433 GOTO(stop, rc = -ENOMEM);
1435 if (likely(mdd_cobj != NULL)) {
1436 mdd_write_lock(env, mdd_cobj, MOR_TGT_CHILD);
1439 rc = mdd_la_get(env, mdd_cobj, cattr,
1440 mdd_object_capa(env, mdd_cobj));
1444 is_dir = S_ISDIR(cattr->la_mode);
1448 rc = mdd_unlink_sanity_check(env, mdd_pobj, mdd_cobj, cattr);
1452 if (likely(no_name == 0)) {
1453 rc = __mdd_index_delete(env, mdd_pobj, name, is_dir, handle,
1454 mdd_object_capa(env, mdd_pobj));
1459 if (likely(mdd_cobj != NULL)) {
1460 rc = mdo_ref_del(env, mdd_cobj, handle);
1462 __mdd_index_insert_only(env, mdd_pobj,
1465 mdd_object_capa(env, mdd_pobj));
1471 mdo_ref_del(env, mdd_cobj, handle);
1473 /* fetch updated nlink */
1474 rc = mdd_la_get(env, mdd_cobj, cattr,
1475 mdd_object_capa(env, mdd_cobj));
1480 LASSERT(ma->ma_attr.la_valid & LA_CTIME);
1481 la->la_ctime = la->la_mtime = ma->ma_attr.la_ctime;
1483 la->la_valid = LA_CTIME | LA_MTIME;
1484 rc = mdd_attr_check_set_internal(env, mdd_pobj, la, handle, 0);
1488 /* Enough for only unlink the entry */
1489 if (unlikely(mdd_cobj == NULL)) {
1490 mdd_pdo_write_unlock(env, mdd_pobj, dlh);
1494 if (cattr->la_nlink > 0 || mdd_cobj->mod_count > 0) {
1495 /* update ctime of an unlinked file only if it is still
1496 * opened or a link still exists */
1497 la->la_valid = LA_CTIME;
1498 rc = mdd_attr_check_set_internal(env, mdd_cobj, la, handle, 0);
1503 /* XXX: this transfer to ma will be removed with LOD/OSP */
1504 ma->ma_attr = *cattr;
1505 ma->ma_valid |= MA_INODE;
1506 rc = mdd_finish_unlink(env, mdd_cobj, ma, handle);
1508 /* fetch updated nlink */
1510 rc = mdd_la_get(env, mdd_cobj, cattr,
1511 mdd_object_capa(env, mdd_cobj));
1514 /* old files may not have link ea; ignore errors */
1515 mdd_links_del(env, mdd_cobj, mdo2fid(mdd_pobj), lname, handle);
1517 /* if object is removed then we can't get its attrs, use last get */
1518 if (cattr->la_nlink == 0) {
1519 ma->ma_attr = *cattr;
1520 ma->ma_valid |= MA_INODE;
1524 mdd_write_unlock(env, mdd_cobj);
1525 mdd_pdo_write_unlock(env, mdd_pobj, dlh);
1529 cl_flags = (cattr->la_nlink == 0) ? CLF_UNLINK_LAST : 0;
1530 if ((ma->ma_valid & MA_HSM) &&
1531 (ma->ma_hsm.mh_flags & HS_EXISTS))
1532 cl_flags |= CLF_UNLINK_HSM_EXISTS;
1534 rc = mdd_changelog_ns_store(env, mdd,
1535 is_dir ? CL_RMDIR : CL_UNLINK, cl_flags,
1536 mdd_cobj, mdd_pobj, lname, handle);
1540 mdd_trans_stop(env, mdd, rc, handle);
1546 * The permission has been checked when obj created, no need check again.
1548 static int mdd_cd_sanity_check(const struct lu_env *env,
1549 struct mdd_object *obj)
1554 if (!obj || mdd_is_dead_obj(obj))
1561 static int mdd_create_data(const struct lu_env *env, struct md_object *pobj,
1562 struct md_object *cobj, const struct md_op_spec *spec,
1565 struct mdd_device *mdd = mdo2mdd(cobj);
1566 struct mdd_object *mdd_pobj = md2mdd_obj(pobj);
1567 struct mdd_object *son = md2mdd_obj(cobj);
1568 struct thandle *handle;
1569 const struct lu_buf *buf;
1570 struct lu_attr *attr = &mdd_env_info(env)->mti_cattr;
1574 rc = mdd_cd_sanity_check(env, son);
1578 if (!md_should_create(spec->sp_cr_flags))
1582 * there are following use cases for this function:
1583 * 1) late striping - file was created with MDS_OPEN_DELAY_CREATE
1584 * striping can be specified or not
1587 rc = mdd_la_get(env, son, attr, mdd_object_capa(env, son));
1591 /* calling ->ah_make_hint() is used to transfer information from parent */
1592 mdd_object_make_hint(env, mdd_pobj, son, attr);
1594 handle = mdd_trans_create(env, mdd);
1596 GOTO(out_free, rc = PTR_ERR(handle));
1599 * XXX: Setting the lov ea is not locked but setting the attr is locked?
1600 * Should this be fixed?
1602 CDEBUG(D_OTHER, "ea %p/%u, cr_flags %Lo, no_create %u\n",
1603 spec->u.sp_ea.eadata, spec->u.sp_ea.eadatalen,
1604 spec->sp_cr_flags, spec->no_create);
1606 if (spec->no_create || spec->sp_cr_flags & MDS_OPEN_HAS_EA) {
1607 /* replay case or lfs setstripe */
1608 buf = mdd_buf_get_const(env, spec->u.sp_ea.eadata,
1609 spec->u.sp_ea.eadatalen);
1614 rc = dt_declare_xattr_set(env, mdd_object_child(son), buf,
1615 XATTR_NAME_LOV, 0, handle);
1619 rc = mdd_declare_changelog_store(env, mdd, NULL, handle);
1623 rc = mdd_trans_start(env, mdd, handle);
1627 rc = dt_xattr_set(env, mdd_object_child(son), buf, XATTR_NAME_LOV,
1628 0, handle, mdd_object_capa(env, son));
1633 rc = mdd_changelog_data_store(env, mdd, CL_LAYOUT, 0, son, handle);
1636 mdd_trans_stop(env, mdd, rc, handle);
1641 /* Get fid from name and parent */
1643 __mdd_lookup(const struct lu_env *env, struct md_object *pobj,
1644 const struct lu_name *lname, struct lu_fid* fid, int mask)
1646 const char *name = lname->ln_name;
1647 const struct dt_key *key = (const struct dt_key *)name;
1648 struct mdd_object *mdd_obj = md2mdd_obj(pobj);
1649 struct mdd_device *m = mdo2mdd(pobj);
1650 struct dt_object *dir = mdd_object_child(mdd_obj);
1654 if (unlikely(mdd_is_dead_obj(mdd_obj)))
1657 if (mdd_object_remote(mdd_obj)) {
1658 CDEBUG(D_INFO, "%s: Object "DFID" locates on remote server\n",
1659 mdd2obd_dev(m)->obd_name, PFID(mdo2fid(mdd_obj)));
1660 } else if (!mdd_object_exists(mdd_obj)) {
1664 /* The common filename length check. */
1665 if (unlikely(lname->ln_namelen > m->mdd_dt_conf.ddp_max_name_len))
1666 RETURN(-ENAMETOOLONG);
1668 rc = mdd_permission_internal_locked(env, mdd_obj, NULL, mask,
1673 if (likely(S_ISDIR(mdd_object_type(mdd_obj)) &&
1674 dt_try_as_dir(env, dir))) {
1676 rc = dir->do_index_ops->dio_lookup(env, dir,
1677 (struct dt_rec *)fid, key,
1678 mdd_object_capa(env, mdd_obj));
1689 static int mdd_declare_object_initialize(const struct lu_env *env,
1690 struct mdd_object *parent,
1691 struct mdd_object *child,
1692 struct lu_attr *attr,
1693 struct thandle *handle,
1694 struct linkea_data *ldata)
1700 * inode mode has been set in creation time, and it's based on umask,
1701 * la_mode and acl, don't set here again! (which will go wrong
1702 * because below function doesn't consider umask).
1703 * I'd suggest set all object attributes in creation time, see above.
1705 LASSERT(attr->la_valid & (LA_MODE | LA_TYPE));
1706 attr->la_valid &= ~(LA_MODE | LA_TYPE);
1707 rc = mdo_declare_attr_set(env, child, attr, handle);
1708 attr->la_valid |= LA_MODE | LA_TYPE;
1709 if (rc == 0 && S_ISDIR(attr->la_mode)) {
1710 rc = mdo_declare_index_insert(env, child, mdo2fid(child),
1713 rc = mdo_declare_ref_add(env, child, handle);
1715 rc = mdo_declare_index_insert(env, child, mdo2fid(parent),
1720 mdd_declare_links_add(env, child, handle, ldata);
1725 static int mdd_object_initialize(const struct lu_env *env,
1726 const struct lu_fid *pfid,
1727 const struct lu_name *lname,
1728 struct mdd_object *child,
1729 struct lu_attr *attr, struct thandle *handle,
1730 const struct md_op_spec *spec,
1731 struct linkea_data *ldata)
1737 * Update attributes for child.
1740 * (1) the valid bits should be converted between Lustre and Linux;
1741 * (2) maybe, the child attributes should be set in OSD when creation.
1744 rc = mdd_attr_set_internal(env, child, attr, handle, 0);
1745 /* arguments are supposed to stay the same */
1746 if (S_ISDIR(attr->la_mode)) {
1747 /* Add "." and ".." for newly created dir */
1748 mdo_ref_add(env, child, handle);
1749 rc = __mdd_index_insert_only(env, child, mdo2fid(child),
1750 dot, handle, BYPASS_CAPA);
1752 rc = __mdd_index_insert_only(env, child, pfid,
1756 mdo_ref_del(env, child, handle);
1760 mdd_links_add(env, child, pfid, lname, handle, ldata, 1);
1765 /* has not lock on pobj yet */
1766 static int mdd_create_sanity_check(const struct lu_env *env,
1767 struct md_object *pobj,
1768 struct lu_attr *pattr,
1769 const struct lu_name *lname,
1770 struct lu_attr *cattr,
1771 struct md_op_spec *spec)
1773 struct mdd_thread_info *info = mdd_env_info(env);
1774 struct lu_fid *fid = &info->mti_fid;
1775 struct mdd_object *obj = md2mdd_obj(pobj);
1776 struct mdd_device *m = mdo2mdd(pobj);
1781 if (mdd_is_dead_obj(obj))
1785 * In some cases this lookup is not needed - we know before if name
1786 * exists or not because MDT performs lookup for it.
1787 * name length check is done in lookup.
1789 if (spec->sp_cr_lookup) {
1791 * Check if the name already exist, though it will be checked in
1792 * _index_insert also, for avoiding rolling back if exists
1795 rc = __mdd_lookup_locked(env, pobj, lname, fid,
1796 MAY_WRITE | MAY_EXEC);
1798 RETURN(rc ? : -EEXIST);
1801 * Check WRITE permission for the parent.
1802 * EXEC permission have been checked
1803 * when lookup before create already.
1805 rc = mdd_permission_internal_locked(env, obj, pattr, MAY_WRITE,
1812 if (pattr->la_mode & S_ISGID) {
1813 cattr->la_gid = pattr->la_gid;
1814 if (S_ISDIR(cattr->la_mode)) {
1815 cattr->la_mode |= S_ISGID;
1816 cattr->la_valid |= LA_MODE;
1820 switch (cattr->la_mode & S_IFMT) {
1822 unsigned int symlen = strlen(spec->u.sp_symname) + 1;
1824 if (symlen > (1 << m->mdd_dt_conf.ddp_block_shift))
1825 RETURN(-ENAMETOOLONG);
1844 static int mdd_declare_create(const struct lu_env *env, struct mdd_device *mdd,
1845 struct mdd_object *p, struct mdd_object *c,
1846 const struct lu_name *name,
1847 struct lu_attr *attr,
1849 struct thandle *handle,
1850 const struct md_op_spec *spec,
1851 struct linkea_data *ldata)
1855 rc = mdd_declare_object_create_internal(env, p, c, attr, handle, spec);
1859 #ifdef CONFIG_FS_POSIX_ACL
1860 if (got_def_acl > 0) {
1861 struct lu_buf *acl_buf;
1863 acl_buf = mdd_buf_get(env, NULL, got_def_acl);
1864 /* if dir, then can inherit default ACl */
1865 if (S_ISDIR(attr->la_mode)) {
1866 rc = mdo_declare_xattr_set(env, c, acl_buf,
1867 XATTR_NAME_ACL_DEFAULT,
1873 rc = mdo_declare_attr_set(env, c, attr, handle);
1877 rc = mdo_declare_xattr_set(env, c, acl_buf,
1878 XATTR_NAME_ACL_ACCESS, 0, handle);
1884 if (S_ISDIR(attr->la_mode)) {
1885 rc = mdo_declare_ref_add(env, p, handle);
1890 rc = mdd_declare_object_initialize(env, p, c, attr, handle, ldata);
1894 if (spec->sp_cr_flags & MDS_OPEN_VOLATILE)
1895 rc = orph_declare_index_insert(env, c, attr->la_mode, handle);
1897 rc = mdo_declare_index_insert(env, p, mdo2fid(c),
1898 name->ln_name, handle);
1902 /* replay case, create LOV EA from client data */
1903 if (spec->no_create || (spec->sp_cr_flags & MDS_OPEN_HAS_EA)) {
1904 const struct lu_buf *buf;
1906 buf = mdd_buf_get_const(env, spec->u.sp_ea.eadata,
1907 spec->u.sp_ea.eadatalen);
1908 rc = mdo_declare_xattr_set(env, c, buf, XATTR_NAME_LOV,
1914 if (S_ISLNK(attr->la_mode)) {
1915 rc = dt_declare_record_write(env, mdd_object_child(c),
1916 strlen(spec->u.sp_symname), 0,
1922 if (!(spec->sp_cr_flags & MDS_OPEN_VOLATILE)) {
1923 rc = mdo_declare_attr_set(env, p, attr, handle);
1928 rc = mdd_declare_changelog_store(env, mdd, name, handle);
1936 static int mdd_acl_init(const struct lu_env *env, struct mdd_object *pobj,
1937 struct lu_attr *la, struct lu_buf *acl_buf,
1938 int *got_def_acl, int *reset_acl)
1943 if (S_ISLNK(la->la_mode))
1946 mdd_read_lock(env, pobj, MOR_TGT_PARENT);
1947 rc = mdo_xattr_get(env, pobj, acl_buf,
1948 XATTR_NAME_ACL_DEFAULT, BYPASS_CAPA);
1949 mdd_read_unlock(env, pobj);
1951 /* If there are default ACL, fix mode by default ACL */
1953 acl_buf->lb_len = rc;
1954 rc = __mdd_fix_mode_acl(env, acl_buf, &la->la_mode);
1958 } else if (rc == -ENODATA || rc == -EOPNOTSUPP) {
1959 /* If there are no default ACL, fix mode by mask */
1960 struct lu_ucred *uc = lu_ucred(env);
1962 /* The create triggered by MDT internal events, such as
1963 * LFSCK reset, will not contain valid "uc". */
1964 if (unlikely(uc != NULL))
1965 la->la_mode &= ~uc->uc_umask;
1973 * Create object and insert it into namespace.
1975 static int mdd_create(const struct lu_env *env, struct md_object *pobj,
1976 const struct lu_name *lname, struct md_object *child,
1977 struct md_op_spec *spec, struct md_attr* ma)
1979 struct mdd_thread_info *info = mdd_env_info(env);
1980 struct lu_attr *la = &info->mti_la_for_fix;
1981 struct mdd_object *mdd_pobj = md2mdd_obj(pobj);
1982 struct mdd_object *son = md2mdd_obj(child);
1983 struct mdd_device *mdd = mdo2mdd(pobj);
1984 struct lu_attr *attr = &ma->ma_attr;
1985 struct thandle *handle;
1986 struct lu_attr *pattr = &info->mti_pattr;
1987 struct lu_buf acl_buf;
1988 struct linkea_data *ldata = &info->mti_link_data;
1989 struct dynlock_handle *dlh;
1990 const char *name = lname->ln_name;
1991 int rc, created = 0, initialized = 0, inserted = 0;
1992 int got_def_acl = 0;
1997 * Two operations have to be performed:
1999 * - an allocation of a new object (->do_create()), and
2001 * - an insertion into a parent index (->dio_insert()).
2003 * Due to locking, operation order is not important, when both are
2004 * successful, *but* error handling cases are quite different:
2006 * - if insertion is done first, and following object creation fails,
2007 * insertion has to be rolled back, but this operation might fail
2008 * also leaving us with dangling index entry.
2010 * - if creation is done first, is has to be undone if insertion
2011 * fails, leaving us with leaked space, which is neither good, nor
2014 * It seems that creation-first is simplest solution, but it is
2015 * sub-optimal in the frequent
2020 * case, because second mkdir is bound to create object, only to
2021 * destroy it immediately.
2023 * To avoid this follow local file systems that do double lookup:
2025 * 0. lookup -> -EEXIST (mdd_create_sanity_check())
2027 * 1. create (mdd_object_create_internal())
2029 * 2. insert (__mdd_index_insert(), lookup again)
2032 rc = mdd_la_get(env, mdd_pobj, pattr, BYPASS_CAPA);
2036 /* Sanity checks before big job. */
2037 rc = mdd_create_sanity_check(env, pobj, pattr, lname, attr, spec);
2041 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_DQACQ_NET))
2042 GOTO(out_free, rc = -EINPROGRESS);
2044 acl_buf.lb_buf = info->mti_xattr_buf;
2045 acl_buf.lb_len = sizeof(info->mti_xattr_buf);
2046 rc = mdd_acl_init(env, mdd_pobj, attr, &acl_buf, &got_def_acl,
2051 mdd_object_make_hint(env, mdd_pobj, son, attr);
2053 handle = mdd_trans_create(env, mdd);
2055 GOTO(out_free, rc = PTR_ERR(handle));
2057 memset(ldata, 0, sizeof(*ldata));
2058 mdd_linkea_prepare(env, son, NULL, NULL, mdd_object_fid(mdd_pobj),
2059 lname, 1, 0, ldata);
2060 rc = mdd_declare_create(env, mdd, mdd_pobj, son, lname, attr,
2061 got_def_acl, handle, spec, ldata);
2065 rc = mdd_trans_start(env, mdd, handle);
2069 dlh = mdd_pdo_write_lock(env, mdd_pobj, name, MOR_TGT_PARENT);
2071 GOTO(out_trans, rc = -ENOMEM);
2073 mdd_write_lock(env, son, MOR_TGT_CHILD);
2074 rc = mdd_object_create_internal(env, NULL, son, attr, handle, spec);
2076 mdd_write_unlock(env, son);
2082 #ifdef CONFIG_FS_POSIX_ACL
2084 /* set default acl */
2085 if (S_ISDIR(attr->la_mode)) {
2086 LASSERTF(acl_buf.lb_len == got_def_acl,
2087 "invalid acl_buf: %p:%d got_def %d\n",
2088 acl_buf.lb_buf, (int)acl_buf.lb_len,
2090 rc = mdo_xattr_set(env, son, &acl_buf,
2091 XATTR_NAME_ACL_DEFAULT, 0,
2092 handle, BYPASS_CAPA);
2094 mdd_write_unlock(env, son);
2099 /* set its own acl */
2101 LASSERTF(acl_buf.lb_buf != NULL && acl_buf.lb_len != 0,
2102 "invalid acl_buf %p:%d\n", acl_buf.lb_buf,
2103 (int)acl_buf.lb_len);
2104 rc = mdo_xattr_set(env, son, &acl_buf,
2105 XATTR_NAME_ACL_ACCESS,
2106 0, handle, BYPASS_CAPA);
2108 mdd_write_unlock(env, son);
2115 rc = mdd_object_initialize(env, mdo2fid(mdd_pobj), lname,
2116 son, attr, handle, spec, ldata);
2119 * in case of replay we just set LOVEA provided by the client
2120 * XXX: I think it would be interesting to try "old" way where
2121 * MDT calls this xattr_set(LOV) in a different transaction.
2122 * probably this way we code can be made better.
2124 if (rc == 0 && (spec->no_create ||
2125 (spec->sp_cr_flags & MDS_OPEN_HAS_EA))) {
2126 const struct lu_buf *buf;
2128 buf = mdd_buf_get_const(env, spec->u.sp_ea.eadata,
2129 spec->u.sp_ea.eadatalen);
2130 rc = mdo_xattr_set(env, son, buf, XATTR_NAME_LOV, 0, handle,
2134 if (rc == 0 && spec->sp_cr_flags & MDS_OPEN_VOLATILE)
2135 rc = __mdd_orphan_add(env, son, handle);
2137 mdd_write_unlock(env, son);
2141 * Object has no links, so it will be destroyed when last
2142 * reference is released. (XXX not now.)
2148 if (!(spec->sp_cr_flags & MDS_OPEN_VOLATILE))
2149 rc = __mdd_index_insert(env, mdd_pobj, mdo2fid(son),
2150 name, S_ISDIR(attr->la_mode), handle,
2151 mdd_object_capa(env, mdd_pobj));
2158 if (S_ISLNK(attr->la_mode)) {
2159 struct lu_ucred *uc = lu_ucred_assert(env);
2160 struct dt_object *dt = mdd_object_child(son);
2161 const char *target_name = spec->u.sp_symname;
2162 int sym_len = strlen(target_name);
2163 const struct lu_buf *buf;
2166 buf = mdd_buf_get_const(env, target_name, sym_len);
2167 rc = dt->do_body_ops->dbo_write(env, dt, buf, &pos, handle,
2168 mdd_object_capa(env, son),
2170 CFS_CAP_SYS_RESOURCE_MASK);
2175 GOTO(cleanup, rc = -EFAULT);
2178 /* volatile file creation does not update parent directory times */
2179 if (spec->sp_cr_flags & MDS_OPEN_VOLATILE)
2180 GOTO(cleanup, rc = 0);
2182 /* update parent directory mtime/ctime */
2184 la->la_valid = LA_CTIME | LA_MTIME;
2185 rc = mdd_attr_check_set_internal(env, mdd_pobj, la, handle, 0);
2191 if (rc != 0 && created != 0) {
2194 if (inserted != 0) {
2195 if (spec->sp_cr_flags & MDS_OPEN_VOLATILE)
2196 rc2 = __mdd_orphan_del(env, son, handle);
2198 rc2 = __mdd_index_delete(env, mdd_pobj, name,
2199 S_ISDIR(attr->la_mode),
2200 handle, BYPASS_CAPA);
2205 mdd_write_lock(env, son, MOR_TGT_CHILD);
2206 if (initialized != 0 && S_ISDIR(attr->la_mode)) {
2207 /* Drop the reference, no need to delete "."/"..",
2208 * because the object to be destroied directly. */
2209 rc2 = mdo_ref_del(env, son, handle);
2211 mdd_write_unlock(env, son);
2216 rc2 = mdo_ref_del(env, son, handle);
2218 mdd_write_unlock(env, son);
2222 mdo_destroy(env, son, handle);
2223 mdd_write_unlock(env, son);
2226 mdd_pdo_write_unlock(env, mdd_pobj, dlh);
2228 if (rc == 0 && fid_is_namespace_visible(mdo2fid(son)))
2229 rc = mdd_changelog_ns_store(env, mdd,
2230 S_ISDIR(attr->la_mode) ? CL_MKDIR :
2231 S_ISREG(attr->la_mode) ? CL_CREATE :
2232 S_ISLNK(attr->la_mode) ? CL_SOFTLINK : CL_MKNOD,
2233 0, son, mdd_pobj, lname, handle);
2235 mdd_trans_stop(env, mdd, rc, handle);
2237 if (ldata->ld_buf && ldata->ld_buf->lb_len > OBD_ALLOC_BIG)
2238 /* if we vmalloced a large buffer drop it */
2239 lu_buf_free(ldata->ld_buf);
2241 /* The child object shouldn't be cached anymore */
2243 set_bit(LU_OBJECT_HEARD_BANSHEE,
2244 &child->mo_lu.lo_header->loh_flags);
2249 * Get locks on parents in proper order
2250 * RETURN: < 0 - error, rename_order if successful
2258 static int mdd_rename_order(const struct lu_env *env,
2259 struct mdd_device *mdd,
2260 struct mdd_object *src_pobj,
2261 struct mdd_object *tgt_pobj)
2263 /* order of locking, 1 - tgt-src, 0 - src-tgt*/
2267 if (src_pobj == tgt_pobj)
2268 RETURN(MDD_RN_SAME);
2270 /* compared the parent child relationship of src_p&tgt_p */
2271 if (lu_fid_eq(&mdd->mdd_root_fid, mdo2fid(src_pobj))){
2273 } else if (lu_fid_eq(&mdd->mdd_root_fid, mdo2fid(tgt_pobj))) {
2276 rc = mdd_is_parent(env, mdd, src_pobj, mdo2fid(tgt_pobj), NULL);
2289 /* has not mdd_write{read}_lock on any obj yet. */
2290 static int mdd_rename_sanity_check(const struct lu_env *env,
2291 struct mdd_object *src_pobj,
2292 struct mdd_object *tgt_pobj,
2293 struct mdd_object *sobj,
2294 struct mdd_object *tobj,
2295 struct lu_attr *so_attr,
2296 struct lu_attr *tg_attr)
2301 /* XXX: when get here, sobj must NOT be NULL,
2302 * the other case has been processed in cld_rename
2303 * before mdd_rename and enable MDS_PERM_BYPASS. */
2306 rc = mdd_may_delete(env, src_pobj, sobj, so_attr, NULL, 1, 0);
2310 /* XXX: when get here, "tobj == NULL" means tobj must
2311 * NOT exist (neither on remote MDS, such case has been
2312 * processed in cld_rename before mdd_rename and enable
2314 * So check may_create, but not check may_unlink. */
2316 rc = mdd_may_create(env, tgt_pobj, NULL,
2317 (src_pobj != tgt_pobj), 0);
2319 rc = mdd_may_delete(env, tgt_pobj, tobj, tg_attr, so_attr,
2320 (src_pobj != tgt_pobj), 1);
2322 if (!rc && !tobj && (src_pobj != tgt_pobj) &&
2323 S_ISDIR(so_attr->la_mode))
2324 rc = __mdd_may_link(env, tgt_pobj);
2329 static int mdd_declare_rename(const struct lu_env *env,
2330 struct mdd_device *mdd,
2331 struct mdd_object *mdd_spobj,
2332 struct mdd_object *mdd_tpobj,
2333 struct mdd_object *mdd_sobj,
2334 struct mdd_object *mdd_tobj,
2335 const struct lu_name *tname,
2336 const struct lu_name *sname,
2338 struct linkea_data *ldata,
2339 struct thandle *handle)
2341 struct lu_attr *la = &mdd_env_info(env)->mti_la_for_fix;
2344 LASSERT(ma->ma_attr.la_valid & LA_CTIME);
2345 la->la_ctime = la->la_mtime = ma->ma_attr.la_ctime;
2351 /* name from source dir */
2352 rc = mdo_declare_index_delete(env, mdd_spobj, sname->ln_name, handle);
2356 /* .. from source child */
2357 if (S_ISDIR(mdd_object_type(mdd_sobj))) {
2358 /* source child can be directory,
2359 * counted by source dir's nlink */
2360 rc = mdo_declare_ref_del(env, mdd_spobj, handle);
2363 if (mdd_spobj != mdd_tpobj) {
2364 rc = mdo_declare_index_delete(env, mdd_sobj, dotdot,
2369 rc = mdo_declare_index_insert(env, mdd_sobj,
2375 /* new target child can be directory,
2376 * counted by target dir's nlink */
2377 rc = mdo_declare_ref_add(env, mdd_tpobj, handle);
2383 la->la_valid = LA_CTIME | LA_MTIME;
2384 rc = mdo_declare_attr_set(env, mdd_spobj, la, handle);
2388 rc = mdo_declare_attr_set(env, mdd_tpobj, la, handle);
2392 la->la_valid = LA_CTIME;
2393 rc = mdo_declare_attr_set(env, mdd_sobj, la, handle);
2397 rc = mdd_declare_links_add(env, mdd_sobj, handle, ldata);
2402 rc = mdo_declare_index_insert(env, mdd_tpobj, mdo2fid(mdd_sobj),
2403 tname->ln_name, handle);
2407 /* name from target dir (old name), we declare it unconditionally
2408 * as mdd_rename() calls delete unconditionally as well. so just
2409 * to balance declarations vs calls to change ... */
2410 rc = mdo_declare_index_delete(env, mdd_tpobj, tname->ln_name, handle);
2414 if (mdd_tobj && mdd_object_exists(mdd_tobj)) {
2415 /* delete target child in target parent directory */
2416 rc = mdo_declare_ref_del(env, mdd_tobj, handle);
2420 if (S_ISDIR(mdd_object_type(mdd_tobj))) {
2421 /* target child can be directory,
2422 * delete "." reference in target child directory */
2423 rc = mdo_declare_ref_del(env, mdd_tobj, handle);
2427 /* delete ".." reference in target parent directory */
2428 rc = mdo_declare_ref_del(env, mdd_tpobj, handle);
2433 la->la_valid = LA_CTIME;
2434 rc = mdo_declare_attr_set(env, mdd_tobj, la, handle);
2438 mdd_declare_links_del(env, mdd_tobj, handle);
2442 rc = mdd_declare_finish_unlink(env, mdd_tobj, ma, handle);
2447 rc = mdd_declare_changelog_ext_store(env, mdd, tname, sname, handle);
2454 /* src object can be remote that is why we use only fid and type of object */
2455 static int mdd_rename(const struct lu_env *env,
2456 struct md_object *src_pobj, struct md_object *tgt_pobj,
2457 const struct lu_fid *lf, const struct lu_name *lsname,
2458 struct md_object *tobj, const struct lu_name *ltname,
2461 const char *sname = lsname->ln_name;
2462 const char *tname = ltname->ln_name;
2463 struct lu_attr *la = &mdd_env_info(env)->mti_la_for_fix;
2464 struct lu_attr *so_attr = &mdd_env_info(env)->mti_cattr;
2465 struct lu_attr *tg_attr = &mdd_env_info(env)->mti_pattr;
2466 struct mdd_object *mdd_spobj = md2mdd_obj(src_pobj); /* source parent */
2467 struct mdd_object *mdd_tpobj = md2mdd_obj(tgt_pobj);
2468 struct mdd_device *mdd = mdo2mdd(src_pobj);
2469 struct mdd_object *mdd_sobj = NULL; /* source object */
2470 struct mdd_object *mdd_tobj = NULL;
2471 struct dynlock_handle *sdlh = NULL, *tdlh = NULL;
2472 struct thandle *handle;
2473 struct linkea_data *ldata = &mdd_env_info(env)->mti_link_data;
2474 const struct lu_fid *tpobj_fid = mdo2fid(mdd_tpobj);
2475 const struct lu_fid *spobj_fid = mdo2fid(mdd_spobj);
2478 bool tobj_locked = 0;
2479 unsigned cl_flags = 0;
2484 mdd_tobj = md2mdd_obj(tobj);
2486 mdd_sobj = mdd_object_find(env, mdd, lf);
2488 rc = mdd_la_get(env, mdd_sobj, so_attr,
2489 mdd_object_capa(env, mdd_sobj));
2491 GOTO(out_pending, rc);
2494 rc = mdd_la_get(env, mdd_tobj, tg_attr,
2495 mdd_object_capa(env, mdd_tobj));
2497 GOTO(out_pending, rc);
2500 rc = mdd_rename_sanity_check(env, mdd_spobj, mdd_tpobj, mdd_sobj,
2501 mdd_tobj, so_attr, tg_attr);
2503 GOTO(out_pending, rc);
2505 handle = mdd_trans_create(env, mdd);
2507 GOTO(out_pending, rc = PTR_ERR(handle));
2509 memset(ldata, 0, sizeof(*ldata));
2510 mdd_linkea_prepare(env, mdd_sobj, NULL, NULL, mdd_object_fid(mdd_tpobj),
2511 ltname, 1, 0, ldata);
2512 rc = mdd_declare_rename(env, mdd, mdd_spobj, mdd_tpobj, mdd_sobj,
2513 mdd_tobj, lsname, ltname, ma, ldata, handle);
2517 rc = mdd_trans_start(env, mdd, handle);
2521 /* FIXME: Should consider tobj and sobj too in rename_lock. */
2522 rc = mdd_rename_order(env, mdd, mdd_spobj, mdd_tpobj);
2524 GOTO(cleanup_unlocked, rc);
2526 /* Get locks in determined order */
2527 if (rc == MDD_RN_SAME) {
2528 sdlh = mdd_pdo_write_lock(env, mdd_spobj,
2529 sname, MOR_SRC_PARENT);
2530 /* check hashes to determine do we need one lock or two */
2531 if (mdd_name2hash(sname) != mdd_name2hash(tname))
2532 tdlh = mdd_pdo_write_lock(env, mdd_tpobj, tname,
2536 } else if (rc == MDD_RN_SRCTGT) {
2537 sdlh = mdd_pdo_write_lock(env, mdd_spobj, sname,MOR_SRC_PARENT);
2538 tdlh = mdd_pdo_write_lock(env, mdd_tpobj, tname,MOR_TGT_PARENT);
2540 tdlh = mdd_pdo_write_lock(env, mdd_tpobj, tname,MOR_SRC_PARENT);
2541 sdlh = mdd_pdo_write_lock(env, mdd_spobj, sname,MOR_TGT_PARENT);
2543 if (sdlh == NULL || tdlh == NULL)
2544 GOTO(cleanup, rc = -ENOMEM);
2546 is_dir = S_ISDIR(so_attr->la_mode);
2548 /* Remove source name from source directory */
2549 rc = __mdd_index_delete(env, mdd_spobj, sname, is_dir, handle,
2550 mdd_object_capa(env, mdd_spobj));
2554 /* "mv dir1 dir2" needs "dir1/.." link update */
2555 if (is_dir && mdd_sobj && !lu_fid_eq(spobj_fid, tpobj_fid)) {
2556 rc = __mdd_index_delete_only(env, mdd_sobj, dotdot, handle,
2557 mdd_object_capa(env, mdd_sobj));
2559 GOTO(fixup_spobj2, rc);
2561 rc = __mdd_index_insert_only(env, mdd_sobj, tpobj_fid, dotdot,
2562 handle, mdd_object_capa(env, mdd_sobj));
2564 GOTO(fixup_spobj, rc);
2567 /* Remove target name from target directory
2568 * Here tobj can be remote one, so we do index_delete unconditionally
2569 * and -ENOENT is allowed.
2571 rc = __mdd_index_delete(env, mdd_tpobj, tname, is_dir, handle,
2572 mdd_object_capa(env, mdd_tpobj));
2575 /* tname might been renamed to something else */
2576 GOTO(fixup_spobj, rc);
2579 GOTO(fixup_spobj, rc);
2582 /* Insert new fid with target name into target dir */
2583 rc = __mdd_index_insert(env, mdd_tpobj, lf, tname, is_dir, handle,
2584 mdd_object_capa(env, mdd_tpobj));
2586 GOTO(fixup_tpobj, rc);
2588 LASSERT(ma->ma_attr.la_valid & LA_CTIME);
2589 la->la_ctime = la->la_mtime = ma->ma_attr.la_ctime;
2591 /* XXX: mdd_sobj must be local one if it is NOT NULL. */
2593 la->la_valid = LA_CTIME;
2594 rc = mdd_attr_check_set_internal(env, mdd_sobj, la, handle, 0);
2596 GOTO(fixup_tpobj, rc);
2599 /* Remove old target object
2600 * For tobj is remote case cmm layer has processed
2601 * and set tobj to NULL then. So when tobj is NOT NULL,
2602 * it must be local one.
2604 if (tobj && mdd_object_exists(mdd_tobj)) {
2605 mdd_write_lock(env, mdd_tobj, MOR_TGT_CHILD);
2607 if (mdd_is_dead_obj(mdd_tobj)) {
2608 /* shld not be dead, something is wrong */
2609 CERROR("tobj is dead, something is wrong\n");
2613 mdo_ref_del(env, mdd_tobj, handle);
2615 /* Remove dot reference. */
2616 if (S_ISDIR(tg_attr->la_mode))
2617 mdo_ref_del(env, mdd_tobj, handle);
2620 /* fetch updated nlink */
2621 rc = mdd_la_get(env, mdd_tobj, tg_attr,
2622 mdd_object_capa(env, mdd_tobj));
2624 CERROR("%s: Failed to get nlink for tobj "
2626 mdd2obd_dev(mdd)->obd_name,
2627 PFID(tpobj_fid), rc);
2628 GOTO(fixup_tpobj, rc);
2631 la->la_valid = LA_CTIME;
2632 rc = mdd_attr_check_set_internal(env, mdd_tobj, la, handle, 0);
2634 CERROR("%s: Failed to set ctime for tobj "
2636 mdd2obd_dev(mdd)->obd_name,
2637 PFID(tpobj_fid), rc);
2638 GOTO(fixup_tpobj, rc);
2641 /* XXX: this transfer to ma will be removed with LOD/OSP */
2642 ma->ma_attr = *tg_attr;
2643 ma->ma_valid |= MA_INODE;
2644 rc = mdd_finish_unlink(env, mdd_tobj, ma, handle);
2646 CERROR("%s: Failed to unlink tobj "
2648 mdd2obd_dev(mdd)->obd_name,
2649 PFID(tpobj_fid), rc);
2650 GOTO(fixup_tpobj, rc);
2653 /* fetch updated nlink */
2654 rc = mdd_la_get(env, mdd_tobj, tg_attr,
2655 mdd_object_capa(env, mdd_tobj));
2657 CERROR("%s: Failed to get nlink for tobj "
2659 mdd2obd_dev(mdd)->obd_name,
2660 PFID(tpobj_fid), rc);
2661 GOTO(fixup_tpobj, rc);
2663 /* XXX: this transfer to ma will be removed with LOD/OSP */
2664 ma->ma_attr = *tg_attr;
2665 ma->ma_valid |= MA_INODE;
2667 if (so_attr->la_nlink == 0)
2668 cl_flags |= CLF_RENAME_LAST;
2671 la->la_valid = LA_CTIME | LA_MTIME;
2672 rc = mdd_attr_check_set_internal(env, mdd_spobj, la, handle, 0);
2674 GOTO(fixup_tpobj, rc);
2676 if (mdd_spobj != mdd_tpobj) {
2677 la->la_valid = LA_CTIME | LA_MTIME;
2678 rc = mdd_attr_check_set_internal(env, mdd_tpobj, la,
2682 if (rc == 0 && mdd_sobj) {
2683 mdd_write_lock(env, mdd_sobj, MOR_SRC_CHILD);
2684 rc = mdd_links_rename(env, mdd_sobj, mdo2fid(mdd_spobj), lsname,
2685 mdo2fid(mdd_tpobj), ltname, handle, NULL,
2688 /* Old files might not have EA entry */
2689 mdd_links_add(env, mdd_sobj, mdo2fid(mdd_spobj),
2690 lsname, handle, NULL, 0);
2691 mdd_write_unlock(env, mdd_sobj);
2692 /* We don't fail the transaction if the link ea can't be
2693 updated -- fid2path will use alternate lookup method. */
2701 rc2 = __mdd_index_delete(env, mdd_tpobj, tname, is_dir, handle,
2704 CWARN("tp obj fix error %d\n",rc2);
2706 if (mdd_tobj && mdd_object_exists(mdd_tobj) &&
2707 !mdd_is_dead_obj(mdd_tobj)) {
2709 mdo_ref_add(env, mdd_tobj, handle);
2711 mdo_ref_add(env, mdd_tobj, handle);
2714 rc2 = __mdd_index_insert(env, mdd_tpobj,
2715 mdo2fid(mdd_tobj), tname,
2720 CWARN("tp obj fix error %d\n",rc2);
2725 if (rc && is_dir && mdd_sobj && mdd_spobj != mdd_tpobj) {
2726 rc2 = __mdd_index_delete_only(env, mdd_sobj, dotdot, handle,
2730 CWARN("%s: sp obj dotdot delete error: rc = %d\n",
2731 mdd2obd_dev(mdd)->obd_name, rc2);
2734 rc2 = __mdd_index_insert_only(env, mdd_sobj, spobj_fid,
2735 dotdot, handle, BYPASS_CAPA);
2737 CWARN("%s: sp obj dotdot insert error: rc = %d\n",
2738 mdd2obd_dev(mdd)->obd_name, rc2);
2743 rc2 = __mdd_index_insert(env, mdd_spobj,
2744 lf, sname, is_dir, handle, BYPASS_CAPA);
2746 CWARN("sp obj fix error %d\n",rc2);
2750 mdd_write_unlock(env, mdd_tobj);
2751 if (likely(tdlh) && sdlh != tdlh)
2752 mdd_pdo_write_unlock(env, mdd_tpobj, tdlh);
2754 mdd_pdo_write_unlock(env, mdd_spobj, sdlh);
2757 rc = mdd_changelog_ext_ns_store(env, mdd, CL_RENAME, cl_flags,
2758 mdd_tobj, tpobj_fid, lf,
2759 spobj_fid, ltname, lsname,
2763 mdd_trans_stop(env, mdd, rc, handle);
2765 mdd_object_put(env, mdd_sobj);
2769 const struct md_dir_operations mdd_dir_ops = {
2770 .mdo_is_subdir = mdd_is_subdir,
2771 .mdo_lookup = mdd_lookup,
2772 .mdo_create = mdd_create,
2773 .mdo_rename = mdd_rename,
2774 .mdo_link = mdd_link,
2775 .mdo_unlink = mdd_unlink,
2776 .mdo_create_data = mdd_create_data,