1 /* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
6 * Create and rename file, directory, symlinks
8 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
10 * Portions of this code from linux/fs/ext3/dir.c
12 * Copyright (C) 1992, 1993, 1994, 1995
13 * Remy Card (card@masi.ibp.fr)
14 * Laboratoire MASI - Institut Blaise pascal
15 * Universite Pierre et Marie Curie (Paris VI)
19 * linux/fs/minix/dir.c
21 * Copyright (C) 1991, 1992 Linux Torvalds
23 * This program is free software; you can redistribute it and/or
24 * modify it under the terms of the GNU General Public
25 * License as published by the Free Software Foundation; either
26 * version 2 of the License, or (at your option) any later version.
28 * This program is distributed in the hope that it will be useful,
29 * but WITHOUT ANY WARRANTY; without even the implied warranty of
30 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
31 * General Public License for more details.
33 * You should have received a copy of the GNU General Public
34 * License along with this program; if not, write to the
35 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
36 * Boston, MA 021110-1307, USA.
40 #include <linux/types.h>
41 #include <linux/slab.h>
42 #include <linux/highmem.h>
43 #include <linux/quotaops.h>
45 #include <cluster/masklog.h>
53 #include "extent_map.h"
65 #include "ocfs2_trace.h"
67 #include "buffer_head_io.h"
69 static int ocfs2_mknod_locked(struct ocfs2_super *osb,
73 struct buffer_head **new_fe_bh,
74 struct buffer_head *parent_fe_bh,
76 struct ocfs2_alloc_context *inode_ac);
78 static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
79 struct inode **ret_orphan_dir,
82 struct ocfs2_dir_lookup_result *lookup,
85 static int ocfs2_orphan_add(struct ocfs2_super *osb,
88 struct buffer_head *fe_bh,
90 struct ocfs2_dir_lookup_result *lookup,
91 struct inode *orphan_dir_inode,
94 static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
99 static int ocfs2_double_lock(struct ocfs2_super *osb,
100 struct buffer_head **bh1,
101 struct inode *inode1,
102 struct buffer_head **bh2,
103 struct inode *inode2,
106 static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2);
107 /* An orphan dir name is an 8 byte value, printed as a hex string */
108 #define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64)))
110 static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry,
115 struct inode *inode = NULL;
117 struct ocfs2_inode_info *oi;
119 trace_ocfs2_lookup(dir, dentry, dentry->d_name.len,
121 (unsigned long long)OCFS2_I(dir)->ip_blkno, 0);
123 if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) {
124 ret = ERR_PTR(-ENAMETOOLONG);
128 status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT);
130 if (status != -ENOENT)
132 ret = ERR_PTR(status);
136 status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name,
137 dentry->d_name.len, &blkno);
141 inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0);
143 ret = ERR_PTR(-EACCES);
148 /* Clear any orphaned state... If we were able to look up the
149 * inode from a directory, it certainly can't be orphaned. We
150 * might have the bad state from a node which intended to
151 * orphan this inode but crashed before it could commit the
153 spin_lock(&oi->ip_lock);
154 oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED;
155 spin_unlock(&oi->ip_lock);
158 ret = d_splice_alias(inode, dentry);
162 * If d_splice_alias() finds a DCACHE_DISCONNECTED
163 * dentry, it will d_move() it on top of ourse. The
164 * return value will indicate this however, so in
165 * those cases, we switch them around for the locking
168 * NOTE: This dentry already has ->d_op set from
169 * ocfs2_get_parent() and ocfs2_get_dentry()
171 if (!IS_ERR_OR_NULL(ret))
174 status = ocfs2_dentry_attach_lock(dentry, inode,
175 OCFS2_I(dir)->ip_blkno);
178 ret = ERR_PTR(status);
182 ocfs2_dentry_attach_gen(dentry);
185 /* Don't drop the cluster lock until *after* the d_add --
186 * unlink on another node will message us to remove that
187 * dentry under this lock so otherwise we can race this with
188 * the downconvert thread and have a stale dentry. */
189 ocfs2_inode_unlock(dir, 0);
193 trace_ocfs2_lookup_ret(ret);
198 static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode)
203 inode = new_inode(dir->i_sb);
205 mlog(ML_ERROR, "new_inode failed!\n");
206 return ERR_PTR(-ENOMEM);
209 /* populate as many fields early on as possible - many of
210 * these are used by the support functions here and in
214 inode_init_owner(inode, dir, mode);
215 status = dquot_initialize(inode);
217 return ERR_PTR(status);
222 static void ocfs2_cleanup_add_entry_failure(struct ocfs2_super *osb,
223 struct dentry *dentry, struct inode *inode)
225 struct ocfs2_dentry_lock *dl = dentry->d_fsdata;
227 ocfs2_simple_drop_lockres(osb, &dl->dl_lockres);
228 ocfs2_lock_res_free(&dl->dl_lockres);
229 BUG_ON(dl->dl_count != 1);
230 spin_lock(&dentry_attach_lock);
231 dentry->d_fsdata = NULL;
232 spin_unlock(&dentry_attach_lock);
237 static int ocfs2_mknod(struct inode *dir,
238 struct dentry *dentry,
243 struct buffer_head *parent_fe_bh = NULL;
244 handle_t *handle = NULL;
245 struct ocfs2_super *osb;
246 struct ocfs2_dinode *dirfe;
247 struct ocfs2_dinode *fe = NULL;
248 struct buffer_head *new_fe_bh = NULL;
249 struct inode *inode = NULL;
250 struct ocfs2_alloc_context *inode_ac = NULL;
251 struct ocfs2_alloc_context *data_ac = NULL;
252 struct ocfs2_alloc_context *meta_ac = NULL;
253 int want_clusters = 0;
255 int xattr_credits = 0;
256 struct ocfs2_security_xattr_info si = {
259 int did_quota_inode = 0;
260 struct ocfs2_dir_lookup_result lookup = { NULL, };
262 int did_block_signals = 0;
263 struct ocfs2_dentry_lock *dl = NULL;
265 trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name,
266 (unsigned long long)OCFS2_I(dir)->ip_blkno,
267 (unsigned long)dev, mode);
269 status = dquot_initialize(dir);
275 /* get our super block */
276 osb = OCFS2_SB(dir->i_sb);
278 status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
280 if (status != -ENOENT)
285 if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) {
290 dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
291 if (!ocfs2_read_links_count(dirfe)) {
292 /* can't make a file in a deleted directory. */
297 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
302 /* get a spot inside the dir. */
303 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
305 dentry->d_name.len, &lookup);
311 /* reserve an inode spot */
312 status = ocfs2_reserve_new_inode(osb, &inode_ac);
314 if (status != -ENOSPC)
319 inode = ocfs2_get_init_inode(dir, mode);
321 status = PTR_ERR(inode);
327 /* get security xattr */
328 status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si);
330 if (status == -EOPNOTSUPP)
338 /* calculate meta data/clusters for setting security and acl xattr */
339 status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode,
341 &xattr_credits, &want_meta);
347 /* Reserve a cluster if creating an extent based directory. */
348 if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) {
351 /* Dir indexing requires extra space as well */
352 if (ocfs2_supports_indexed_dirs(osb))
356 status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac);
358 if (status != -ENOSPC)
363 status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
365 if (status != -ENOSPC)
370 handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb,
373 if (IS_ERR(handle)) {
374 status = PTR_ERR(handle);
380 /* Starting to change things, restart is no longer possible. */
381 ocfs2_block_signals(&oldset);
382 did_block_signals = 1;
384 status = dquot_alloc_inode(inode);
389 /* do the real work now. */
390 status = ocfs2_mknod_locked(osb, dir, inode, dev,
391 &new_fe_bh, parent_fe_bh, handle,
398 fe = (struct ocfs2_dinode *) new_fe_bh->b_data;
400 status = ocfs2_fill_new_dir(osb, handle, dir, inode,
401 new_fe_bh, data_ac, meta_ac);
407 status = ocfs2_journal_access_di(handle, INODE_CACHE(dir),
409 OCFS2_JOURNAL_ACCESS_WRITE);
414 ocfs2_add_links_count(dirfe, 1);
415 ocfs2_journal_dirty(handle, parent_fe_bh);
419 status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh,
428 status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
437 * Do this before adding the entry to the directory. We add
438 * also set d_op after success so that ->d_iput() will cleanup
439 * the dentry lock even if ocfs2_add_entry() fails below.
441 status = ocfs2_dentry_attach_lock(dentry, inode,
442 OCFS2_I(dir)->ip_blkno);
448 dl = dentry->d_fsdata;
450 status = ocfs2_add_entry(handle, dentry, inode,
451 OCFS2_I(inode)->ip_blkno, parent_fe_bh,
458 insert_inode_hash(inode);
459 d_instantiate(dentry, inode);
462 if (status < 0 && did_quota_inode)
463 dquot_free_inode(inode);
465 if (status < 0 && fe)
466 ocfs2_set_links_count(fe, 0);
467 ocfs2_commit_trans(osb, handle);
470 ocfs2_inode_unlock(dir, 1);
471 if (did_block_signals)
472 ocfs2_unblock_signals(&oldset);
475 brelse(parent_fe_bh);
478 ocfs2_free_dir_lookup_result(&lookup);
481 ocfs2_free_alloc_context(inode_ac);
484 ocfs2_free_alloc_context(data_ac);
487 ocfs2_free_alloc_context(meta_ac);
490 * We should call iput after the i_mutex of the bitmap been
491 * unlocked in ocfs2_free_alloc_context, or the
492 * ocfs2_delete_inode will mutex_lock again.
494 if ((status < 0) && inode) {
496 ocfs2_cleanup_add_entry_failure(osb, dentry, inode);
498 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR;
509 static int __ocfs2_mknod_locked(struct inode *dir,
512 struct buffer_head **new_fe_bh,
513 struct buffer_head *parent_fe_bh,
515 struct ocfs2_alloc_context *inode_ac,
516 u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit)
519 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
520 struct ocfs2_dinode *fe = NULL;
521 struct ocfs2_extent_list *fel;
523 struct ocfs2_inode_info *oi = OCFS2_I(inode);
524 struct timespec64 ts;
528 /* populate as many fields early on as possible - many of
529 * these are used by the support functions here and in
531 inode->i_ino = ino_from_blkno(osb->sb, fe_blkno);
532 OCFS2_I(inode)->ip_blkno = fe_blkno;
533 spin_lock(&osb->osb_lock);
534 inode->i_generation = osb->s_next_generation++;
535 spin_unlock(&osb->osb_lock);
537 *new_fe_bh = sb_getblk(osb->sb, fe_blkno);
543 ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh);
545 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
547 OCFS2_JOURNAL_ACCESS_CREATE);
553 fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data;
554 memset(fe, 0, osb->sb->s_blocksize);
556 fe->i_generation = cpu_to_le32(inode->i_generation);
557 fe->i_fs_generation = cpu_to_le32(osb->fs_generation);
558 fe->i_blkno = cpu_to_le64(fe_blkno);
559 fe->i_suballoc_loc = cpu_to_le64(suballoc_loc);
560 fe->i_suballoc_bit = cpu_to_le16(suballoc_bit);
561 fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot);
562 fe->i_uid = cpu_to_le32(i_uid_read(inode));
563 fe->i_gid = cpu_to_le32(i_gid_read(inode));
564 fe->i_mode = cpu_to_le16(inode->i_mode);
565 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
566 fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev));
568 ocfs2_set_links_count(fe, inode->i_nlink);
570 fe->i_last_eb_blk = 0;
571 strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE);
572 fe->i_flags |= cpu_to_le32(OCFS2_VALID_FL);
573 ktime_get_real_ts64(&ts);
574 fe->i_atime = fe->i_ctime = fe->i_mtime =
575 cpu_to_le64(ts.tv_sec);
576 fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec =
577 cpu_to_le32(ts.tv_nsec);
581 * If supported, directories start with inline data. If inline
582 * isn't supported, but indexing is, we start them as indexed.
584 feat = le16_to_cpu(fe->i_dyn_features);
585 if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) {
586 fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL);
588 fe->id2.i_data.id_count = cpu_to_le16(
589 ocfs2_max_inline_data_with_xattr(osb->sb, fe));
591 fel = &fe->id2.i_list;
592 fel->l_tree_depth = 0;
593 fel->l_next_free_rec = 0;
594 fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb));
597 ocfs2_journal_dirty(handle, *new_fe_bh);
599 ocfs2_populate_inode(inode, fe, 1);
600 ocfs2_ci_set_new(osb, INODE_CACHE(inode));
601 if (!ocfs2_mount_local(osb)) {
602 status = ocfs2_create_new_inode_locks(inode);
607 oi->i_sync_tid = handle->h_transaction->t_tid;
608 oi->i_datasync_tid = handle->h_transaction->t_tid;
623 static int ocfs2_mknod_locked(struct ocfs2_super *osb,
627 struct buffer_head **new_fe_bh,
628 struct buffer_head *parent_fe_bh,
630 struct ocfs2_alloc_context *inode_ac)
633 u64 suballoc_loc, fe_blkno = 0;
638 status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh,
639 inode_ac, &suballoc_loc,
640 &suballoc_bit, &fe_blkno);
646 return __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh,
647 parent_fe_bh, handle, inode_ac,
648 fe_blkno, suballoc_loc, suballoc_bit);
651 static int ocfs2_mkdir(struct inode *dir,
652 struct dentry *dentry,
657 trace_ocfs2_mkdir(dir, dentry, dentry->d_name.len, dentry->d_name.name,
658 OCFS2_I(dir)->ip_blkno, mode);
659 ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0);
666 static int ocfs2_create(struct inode *dir,
667 struct dentry *dentry,
673 trace_ocfs2_create(dir, dentry, dentry->d_name.len, dentry->d_name.name,
674 (unsigned long long)OCFS2_I(dir)->ip_blkno, mode);
675 ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0);
682 static int ocfs2_link(struct dentry *old_dentry,
684 struct dentry *dentry)
687 struct inode *inode = d_inode(old_dentry);
688 struct inode *old_dir = d_inode(old_dentry->d_parent);
690 struct buffer_head *fe_bh = NULL;
691 struct buffer_head *old_dir_bh = NULL;
692 struct buffer_head *parent_fe_bh = NULL;
693 struct ocfs2_dinode *fe = NULL;
694 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
695 struct ocfs2_dir_lookup_result lookup = { NULL, };
699 trace_ocfs2_link((unsigned long long)OCFS2_I(inode)->ip_blkno,
700 old_dentry->d_name.len, old_dentry->d_name.name,
701 dentry->d_name.len, dentry->d_name.name);
703 if (S_ISDIR(inode->i_mode))
706 err = dquot_initialize(dir);
712 err = ocfs2_double_lock(osb, &old_dir_bh, old_dir,
713 &parent_fe_bh, dir, 0);
720 /* make sure both dirs have bhs
721 * get an extra ref on old_dir_bh if old==new */
724 parent_fe_bh = old_dir_bh;
725 get_bh(parent_fe_bh);
727 mlog(ML_ERROR, "%s: no old_dir_bh!\n", osb->uuid_str);
738 err = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name,
739 old_dentry->d_name.len, &old_de_ino);
746 * Check whether another node removed the source inode while we
749 if (old_de_ino != OCFS2_I(inode)->ip_blkno) {
754 err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
759 err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
761 dentry->d_name.len, &lookup);
767 err = ocfs2_inode_lock(inode, &fe_bh, 1);
774 fe = (struct ocfs2_dinode *) fe_bh->b_data;
775 if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) {
777 goto out_unlock_inode;
780 handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb));
781 if (IS_ERR(handle)) {
782 err = PTR_ERR(handle);
785 goto out_unlock_inode;
788 /* Starting to change things, restart is no longer possible. */
789 ocfs2_block_signals(&oldset);
791 err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh,
792 OCFS2_JOURNAL_ACCESS_WRITE);
799 inode->i_ctime = current_time(inode);
800 ocfs2_set_links_count(fe, inode->i_nlink);
801 fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
802 fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
803 ocfs2_journal_dirty(handle, fe_bh);
805 err = ocfs2_add_entry(handle, dentry, inode,
806 OCFS2_I(inode)->ip_blkno,
807 parent_fe_bh, &lookup);
809 ocfs2_add_links_count(fe, -1);
815 err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
822 d_instantiate(dentry, inode);
825 ocfs2_commit_trans(osb, handle);
826 ocfs2_unblock_signals(&oldset);
828 ocfs2_inode_unlock(inode, 1);
831 ocfs2_double_unlock(old_dir, dir);
834 brelse(parent_fe_bh);
837 ocfs2_free_dir_lookup_result(&lookup);
846 * Takes and drops an exclusive lock on the given dentry. This will
847 * force other nodes to drop it.
849 static int ocfs2_remote_dentry_delete(struct dentry *dentry)
853 ret = ocfs2_dentry_lock(dentry, 1);
857 ocfs2_dentry_unlock(dentry, 1);
862 static inline int ocfs2_inode_is_unlinkable(struct inode *inode)
864 if (S_ISDIR(inode->i_mode)) {
865 if (inode->i_nlink == 2)
870 if (inode->i_nlink == 1)
875 static int ocfs2_unlink(struct inode *dir,
876 struct dentry *dentry)
879 int child_locked = 0;
880 bool is_unlinkable = false;
881 struct inode *inode = d_inode(dentry);
882 struct inode *orphan_dir = NULL;
883 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
885 struct ocfs2_dinode *fe = NULL;
886 struct buffer_head *fe_bh = NULL;
887 struct buffer_head *parent_node_bh = NULL;
888 handle_t *handle = NULL;
889 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
890 struct ocfs2_dir_lookup_result lookup = { NULL, };
891 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
893 trace_ocfs2_unlink(dir, dentry, dentry->d_name.len,
895 (unsigned long long)OCFS2_I(dir)->ip_blkno,
896 (unsigned long long)OCFS2_I(inode)->ip_blkno);
898 status = dquot_initialize(dir);
904 BUG_ON(d_inode(dentry->d_parent) != dir);
906 if (inode == osb->root_inode)
909 status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1,
912 if (status != -ENOENT)
917 status = ocfs2_find_files_on_disk(dentry->d_name.name,
918 dentry->d_name.len, &blkno, dir,
921 if (status != -ENOENT)
926 if (OCFS2_I(inode)->ip_blkno != blkno) {
929 trace_ocfs2_unlink_noent(
930 (unsigned long long)OCFS2_I(inode)->ip_blkno,
931 (unsigned long long)blkno,
932 OCFS2_I(inode)->ip_flags);
936 status = ocfs2_inode_lock(inode, &fe_bh, 1);
938 if (status != -ENOENT)
944 if (S_ISDIR(inode->i_mode)) {
945 if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) {
951 status = ocfs2_remote_dentry_delete(dentry);
953 /* This remote delete should succeed under all normal
959 if (ocfs2_inode_is_unlinkable(inode)) {
960 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
961 OCFS2_I(inode)->ip_blkno,
962 orphan_name, &orphan_insert,
968 is_unlinkable = true;
971 handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb));
972 if (IS_ERR(handle)) {
973 status = PTR_ERR(handle);
979 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh,
980 OCFS2_JOURNAL_ACCESS_WRITE);
986 fe = (struct ocfs2_dinode *) fe_bh->b_data;
988 /* delete the name from the parent dir */
989 status = ocfs2_delete_entry(handle, dir, &lookup);
995 if (S_ISDIR(inode->i_mode))
998 ocfs2_set_links_count(fe, inode->i_nlink);
999 ocfs2_journal_dirty(handle, fe_bh);
1001 dir->i_ctime = dir->i_mtime = current_time(dir);
1002 if (S_ISDIR(inode->i_mode))
1005 status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh);
1008 if (S_ISDIR(inode->i_mode))
1013 if (is_unlinkable) {
1014 status = ocfs2_orphan_add(osb, handle, inode, fe_bh,
1015 orphan_name, &orphan_insert, orphan_dir, false);
1022 ocfs2_commit_trans(osb, handle);
1025 /* This was locked for us in ocfs2_prepare_orphan_dir() */
1026 ocfs2_inode_unlock(orphan_dir, 1);
1027 inode_unlock(orphan_dir);
1032 ocfs2_inode_unlock(inode, 1);
1034 ocfs2_inode_unlock(dir, 1);
1037 brelse(parent_node_bh);
1039 ocfs2_free_dir_lookup_result(&orphan_insert);
1040 ocfs2_free_dir_lookup_result(&lookup);
1042 if (status && (status != -ENOTEMPTY) && (status != -ENOENT))
1048 static int ocfs2_check_if_ancestor(struct ocfs2_super *osb,
1049 u64 src_inode_no, u64 dest_inode_no)
1052 u64 parent_inode_no = 0;
1053 u64 child_inode_no = src_inode_no;
1054 struct inode *child_inode;
1056 #define MAX_LOOKUP_TIMES 32
1058 child_inode = ocfs2_iget(osb, child_inode_no, 0, 0);
1059 if (IS_ERR(child_inode)) {
1060 ret = PTR_ERR(child_inode);
1064 ret = ocfs2_inode_lock(child_inode, NULL, 0);
1072 ret = ocfs2_lookup_ino_from_name(child_inode, "..", 2,
1074 ocfs2_inode_unlock(child_inode, 0);
1081 if (parent_inode_no == dest_inode_no) {
1086 if (parent_inode_no == osb->root_inode->i_ino) {
1091 child_inode_no = parent_inode_no;
1093 if (++i >= MAX_LOOKUP_TIMES) {
1094 mlog(ML_NOTICE, "max lookup times reached, filesystem "
1095 "may have nested directories, "
1096 "src inode: %llu, dest inode: %llu.\n",
1097 (unsigned long long)src_inode_no,
1098 (unsigned long long)dest_inode_no);
1108 * The only place this should be used is rename and link!
1109 * if they have the same id, then the 1st one is the only one locked.
1111 static int ocfs2_double_lock(struct ocfs2_super *osb,
1112 struct buffer_head **bh1,
1113 struct inode *inode1,
1114 struct buffer_head **bh2,
1115 struct inode *inode2,
1119 int inode1_is_ancestor, inode2_is_ancestor;
1120 struct ocfs2_inode_info *oi1 = OCFS2_I(inode1);
1121 struct ocfs2_inode_info *oi2 = OCFS2_I(inode2);
1123 trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno,
1124 (unsigned long long)oi2->ip_blkno);
1131 /* we always want to lock the one with the lower lockid first.
1132 * and if they are nested, we lock ancestor first */
1133 if (oi1->ip_blkno != oi2->ip_blkno) {
1134 inode1_is_ancestor = ocfs2_check_if_ancestor(osb, oi2->ip_blkno,
1136 if (inode1_is_ancestor < 0) {
1137 status = inode1_is_ancestor;
1141 inode2_is_ancestor = ocfs2_check_if_ancestor(osb, oi1->ip_blkno,
1143 if (inode2_is_ancestor < 0) {
1144 status = inode2_is_ancestor;
1148 if ((inode1_is_ancestor == 1) ||
1149 (oi1->ip_blkno < oi2->ip_blkno &&
1150 inode2_is_ancestor == 0)) {
1151 /* switch id1 and id2 around */
1153 swap(inode2, inode1);
1156 status = ocfs2_inode_lock_nested(inode2, bh2, 1,
1157 rename == 1 ? OI_LS_RENAME1 : OI_LS_PARENT);
1159 if (status != -ENOENT)
1166 status = ocfs2_inode_lock_nested(inode1, bh1, 1,
1167 rename == 1 ? OI_LS_RENAME2 : OI_LS_PARENT);
1170 * An error return must mean that no cluster locks
1171 * were held on function exit.
1173 if (oi1->ip_blkno != oi2->ip_blkno) {
1174 ocfs2_inode_unlock(inode2, 1);
1179 if (status != -ENOENT)
1183 trace_ocfs2_double_lock_end(
1184 (unsigned long long)OCFS2_I(inode1)->ip_blkno,
1185 (unsigned long long)OCFS2_I(inode2)->ip_blkno);
1193 static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2)
1195 ocfs2_inode_unlock(inode1, 1);
1197 if (inode1 != inode2)
1198 ocfs2_inode_unlock(inode2, 1);
1201 static int ocfs2_rename(struct inode *old_dir,
1202 struct dentry *old_dentry,
1203 struct inode *new_dir,
1204 struct dentry *new_dentry,
1207 int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0;
1208 int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0;
1209 struct inode *old_inode = d_inode(old_dentry);
1210 struct inode *new_inode = d_inode(new_dentry);
1211 struct inode *orphan_dir = NULL;
1212 struct ocfs2_dinode *newfe = NULL;
1213 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
1214 struct buffer_head *newfe_bh = NULL;
1215 struct buffer_head *old_inode_bh = NULL;
1216 struct ocfs2_super *osb = NULL;
1217 u64 newfe_blkno, old_de_ino;
1218 handle_t *handle = NULL;
1219 struct buffer_head *old_dir_bh = NULL;
1220 struct buffer_head *new_dir_bh = NULL;
1221 u32 old_dir_nlink = old_dir->i_nlink;
1222 struct ocfs2_dinode *old_di;
1223 struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, };
1224 struct ocfs2_dir_lookup_result target_lookup_res = { NULL, };
1225 struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, };
1226 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
1227 struct ocfs2_dir_lookup_result target_insert = { NULL, };
1228 bool should_add_orphan = false;
1233 /* At some point it might be nice to break this function up a
1236 trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry,
1237 old_dentry->d_name.len, old_dentry->d_name.name,
1238 new_dentry->d_name.len, new_dentry->d_name.name);
1240 status = dquot_initialize(old_dir);
1245 status = dquot_initialize(new_dir);
1251 osb = OCFS2_SB(old_dir->i_sb);
1254 if (!igrab(new_inode))
1258 /* Assume a directory hierarchy thusly:
1261 * a,b,c, and d are all directories.
1263 * from cwd of 'a' on both nodes:
1267 * And that's why, just like the VFS, we need a file system
1269 if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) {
1270 status = ocfs2_rename_lock(osb);
1277 /* here we cannot guarantee the inodes haven't just been
1278 * changed, so check if they are nested again */
1279 status = ocfs2_check_if_ancestor(osb, new_dir->i_ino,
1284 } else if (status == 1) {
1286 trace_ocfs2_rename_not_permitted(
1287 (unsigned long long)old_inode->i_ino,
1288 (unsigned long long)new_dir->i_ino);
1293 /* if old and new are the same, this'll just do one lock. */
1294 status = ocfs2_double_lock(osb, &old_dir_bh, old_dir,
1295 &new_dir_bh, new_dir, 1);
1302 if (!new_dir->i_nlink) {
1307 /* make sure both dirs have bhs
1308 * get an extra ref on old_dir_bh if old==new */
1311 new_dir_bh = old_dir_bh;
1314 mlog(ML_ERROR, "no old_dir_bh!\n");
1321 * Aside from allowing a meta data update, the locking here
1322 * also ensures that the downconvert thread on other nodes
1323 * won't have to concurrently downconvert the inode and the
1326 status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1,
1329 if (status != -ENOENT)
1333 old_child_locked = 1;
1335 status = ocfs2_remote_dentry_delete(old_dentry);
1341 if (S_ISDIR(old_inode->i_mode)) {
1342 u64 old_inode_parent;
1345 status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent,
1347 &old_inode_dot_dot_res);
1353 if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) {
1358 if (!new_inode && new_dir != old_dir &&
1359 new_dir->i_nlink >= ocfs2_link_max(osb)) {
1365 status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name,
1366 old_dentry->d_name.len,
1374 * Check for inode number is _not_ due to possible IO errors.
1375 * We might rmdir the source, keep it as pwd of some process
1376 * and merrily kill the link to whatever was created under the
1377 * same name. Goodbye sticky bit ;-<
1379 if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) {
1384 /* check if the target already exists (in which case we need
1386 status = ocfs2_find_files_on_disk(new_dentry->d_name.name,
1387 new_dentry->d_name.len,
1388 &newfe_blkno, new_dir,
1389 &target_lookup_res);
1390 /* The only error we allow here is -ENOENT because the new
1391 * file not existing is perfectly valid. */
1392 if ((status < 0) && (status != -ENOENT)) {
1393 /* If we cannot find the file specified we should just */
1394 /* return the error... */
1401 if (!target_exists && new_inode) {
1403 * Target was unlinked by another node while we were
1404 * waiting to get to ocfs2_rename(). There isn't
1405 * anything we can do here to help the situation, so
1406 * bubble up the appropriate error.
1412 /* In case we need to overwrite an existing file, we blow it
1414 if (target_exists) {
1415 /* VFS didn't think there existed an inode here, but
1416 * someone else in the cluster must have raced our
1417 * rename to create one. Today we error cleanly, in
1418 * the future we should consider calling iget to build
1419 * a new struct inode for this entry. */
1423 trace_ocfs2_rename_target_exists(new_dentry->d_name.len,
1424 new_dentry->d_name.name);
1428 if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) {
1431 trace_ocfs2_rename_disagree(
1432 (unsigned long long)OCFS2_I(new_inode)->ip_blkno,
1433 (unsigned long long)newfe_blkno,
1434 OCFS2_I(new_inode)->ip_flags);
1438 status = ocfs2_inode_lock(new_inode, &newfe_bh, 1);
1440 if (status != -ENOENT)
1444 new_child_locked = 1;
1446 status = ocfs2_remote_dentry_delete(new_dentry);
1452 newfe = (struct ocfs2_dinode *) newfe_bh->b_data;
1454 trace_ocfs2_rename_over_existing(
1455 (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ?
1456 (unsigned long long)newfe_bh->b_blocknr : 0ULL);
1458 if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) {
1459 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
1460 OCFS2_I(new_inode)->ip_blkno,
1461 orphan_name, &orphan_insert,
1467 should_add_orphan = true;
1470 BUG_ON(d_inode(new_dentry->d_parent) != new_dir);
1472 status = ocfs2_check_dir_for_entry(new_dir,
1473 new_dentry->d_name.name,
1474 new_dentry->d_name.len);
1478 status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh,
1479 new_dentry->d_name.name,
1480 new_dentry->d_name.len,
1488 handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb));
1489 if (IS_ERR(handle)) {
1490 status = PTR_ERR(handle);
1496 if (target_exists) {
1497 if (S_ISDIR(new_inode->i_mode)) {
1498 if (new_inode->i_nlink != 2 ||
1499 !ocfs2_empty_dir(new_inode)) {
1500 status = -ENOTEMPTY;
1504 status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode),
1506 OCFS2_JOURNAL_ACCESS_WRITE);
1512 /* change the dirent to point to the correct inode */
1513 status = ocfs2_update_entry(new_dir, handle, &target_lookup_res,
1519 new_dir->i_version++;
1521 if (S_ISDIR(new_inode->i_mode))
1522 ocfs2_set_links_count(newfe, 0);
1524 ocfs2_add_links_count(newfe, -1);
1525 ocfs2_journal_dirty(handle, newfe_bh);
1526 if (should_add_orphan) {
1527 status = ocfs2_orphan_add(osb, handle, new_inode,
1528 newfe_bh, orphan_name,
1529 &orphan_insert, orphan_dir, false);
1536 /* if the name was not found in new_dir, add it now */
1537 status = ocfs2_add_entry(handle, new_dentry, old_inode,
1538 OCFS2_I(old_inode)->ip_blkno,
1539 new_dir_bh, &target_insert);
1542 old_inode->i_ctime = current_time(old_inode);
1543 mark_inode_dirty(old_inode);
1545 status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode),
1547 OCFS2_JOURNAL_ACCESS_WRITE);
1549 old_di = (struct ocfs2_dinode *) old_inode_bh->b_data;
1551 old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec);
1552 old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec);
1553 ocfs2_journal_dirty(handle, old_inode_bh);
1558 * Now that the name has been added to new_dir, remove the old name.
1560 * We don't keep any directory entry context around until now
1561 * because the insert might have changed the type of directory
1562 * we're dealing with.
1564 status = ocfs2_find_entry(old_dentry->d_name.name,
1565 old_dentry->d_name.len, old_dir,
1568 if (!is_journal_aborted(osb->journal->j_journal)) {
1569 ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s "
1571 new_dentry->d_name.len, new_dentry->d_name.name,
1572 old_dentry->d_name.len, old_dentry->d_name.name);
1577 status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup);
1580 if (!is_journal_aborted(osb->journal->j_journal)) {
1581 ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s "
1583 new_dentry->d_name.len, new_dentry->d_name.name,
1584 old_dentry->d_name.len, old_dentry->d_name.name);
1590 drop_nlink(new_inode);
1591 new_inode->i_ctime = current_time(new_inode);
1593 old_dir->i_ctime = old_dir->i_mtime = current_time(old_dir);
1595 if (update_dot_dot) {
1596 status = ocfs2_update_entry(old_inode, handle,
1597 &old_inode_dot_dot_res, new_dir);
1598 drop_nlink(old_dir);
1600 drop_nlink(new_inode);
1603 mark_inode_dirty(new_dir);
1606 mark_inode_dirty(old_dir);
1607 ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh);
1609 mark_inode_dirty(new_inode);
1610 ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh);
1613 if (old_dir != new_dir) {
1614 /* Keep the same times on both directories.*/
1615 new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime;
1618 * This will also pick up the i_nlink change from the
1621 ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh);
1624 if (old_dir_nlink != old_dir->i_nlink) {
1626 mlog(ML_ERROR, "need to change nlink for old dir "
1627 "%llu from %d to %d but bh is NULL!\n",
1628 (unsigned long long)OCFS2_I(old_dir)->ip_blkno,
1629 (int)old_dir_nlink, old_dir->i_nlink);
1631 struct ocfs2_dinode *fe;
1632 status = ocfs2_journal_access_di(handle,
1633 INODE_CACHE(old_dir),
1635 OCFS2_JOURNAL_ACCESS_WRITE);
1636 fe = (struct ocfs2_dinode *) old_dir_bh->b_data;
1637 ocfs2_set_links_count(fe, old_dir->i_nlink);
1638 ocfs2_journal_dirty(handle, old_dir_bh);
1641 ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir);
1645 ocfs2_commit_trans(osb, handle);
1648 /* This was locked for us in ocfs2_prepare_orphan_dir() */
1649 ocfs2_inode_unlock(orphan_dir, 1);
1650 inode_unlock(orphan_dir);
1654 if (new_child_locked)
1655 ocfs2_inode_unlock(new_inode, 1);
1657 if (old_child_locked)
1658 ocfs2_inode_unlock(old_inode, 1);
1661 ocfs2_double_unlock(old_dir, new_dir);
1664 ocfs2_rename_unlock(osb);
1667 sync_mapping_buffers(old_inode->i_mapping);
1671 ocfs2_free_dir_lookup_result(&target_lookup_res);
1672 ocfs2_free_dir_lookup_result(&old_entry_lookup);
1673 ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res);
1674 ocfs2_free_dir_lookup_result(&orphan_insert);
1675 ocfs2_free_dir_lookup_result(&target_insert);
1678 brelse(old_inode_bh);
1689 * we expect i_size = strlen(symname). Copy symname into the file
1690 * data, including the null terminator.
1692 static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
1694 struct inode *inode,
1695 const char *symname)
1697 struct buffer_head **bhs = NULL;
1699 struct super_block *sb = osb->sb;
1700 u64 p_blkno, p_blocks;
1701 int virtual, blocks, status, i, bytes_left;
1703 bytes_left = i_size_read(inode) + 1;
1704 /* we can't trust i_blocks because we're actually going to
1705 * write i_size + 1 bytes. */
1706 blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
1708 trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks,
1709 i_size_read(inode), blocks);
1711 /* Sanity check -- make sure we're going to fit. */
1713 ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) {
1719 bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL);
1726 status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks,
1733 /* links can never be larger than one cluster so we know this
1734 * is all going to be contiguous, but do a sanity check
1736 if ((p_blocks << sb->s_blocksize_bits) < bytes_left) {
1743 while(bytes_left > 0) {
1744 c = &symname[virtual * sb->s_blocksize];
1746 bhs[virtual] = sb_getblk(sb, p_blkno);
1747 if (!bhs[virtual]) {
1752 ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode),
1755 status = ocfs2_journal_access(handle, INODE_CACHE(inode),
1757 OCFS2_JOURNAL_ACCESS_CREATE);
1763 memset(bhs[virtual]->b_data, 0, sb->s_blocksize);
1765 memcpy(bhs[virtual]->b_data, c,
1766 (bytes_left > sb->s_blocksize) ? sb->s_blocksize :
1769 ocfs2_journal_dirty(handle, bhs[virtual]);
1773 bytes_left -= sb->s_blocksize;
1780 for(i = 0; i < blocks; i++)
1790 static int ocfs2_symlink(struct inode *dir,
1791 struct dentry *dentry,
1792 const char *symname)
1794 int status, l, credits;
1796 struct ocfs2_super *osb = NULL;
1797 struct inode *inode = NULL;
1798 struct super_block *sb;
1799 struct buffer_head *new_fe_bh = NULL;
1800 struct buffer_head *parent_fe_bh = NULL;
1801 struct ocfs2_dinode *fe = NULL;
1802 struct ocfs2_dinode *dirfe;
1803 handle_t *handle = NULL;
1804 struct ocfs2_alloc_context *inode_ac = NULL;
1805 struct ocfs2_alloc_context *data_ac = NULL;
1806 struct ocfs2_alloc_context *xattr_ac = NULL;
1807 int want_clusters = 0;
1808 int xattr_credits = 0;
1809 struct ocfs2_security_xattr_info si = {
1812 int did_quota = 0, did_quota_inode = 0;
1813 struct ocfs2_dir_lookup_result lookup = { NULL, };
1815 int did_block_signals = 0;
1816 struct ocfs2_dentry_lock *dl = NULL;
1818 trace_ocfs2_symlink_begin(dir, dentry, symname,
1819 dentry->d_name.len, dentry->d_name.name);
1821 status = dquot_initialize(dir);
1830 l = strlen(symname) + 1;
1832 credits = ocfs2_calc_symlink_credits(sb);
1834 /* lock the parent directory */
1835 status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
1837 if (status != -ENOENT)
1842 dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
1843 if (!ocfs2_read_links_count(dirfe)) {
1844 /* can't make a file in a deleted directory. */
1849 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
1850 dentry->d_name.len);
1854 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
1855 dentry->d_name.name,
1856 dentry->d_name.len, &lookup);
1862 status = ocfs2_reserve_new_inode(osb, &inode_ac);
1864 if (status != -ENOSPC)
1869 inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO);
1870 if (IS_ERR(inode)) {
1871 status = PTR_ERR(inode);
1877 /* get security xattr */
1878 status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si);
1880 if (status == -EOPNOTSUPP)
1888 /* calculate meta data/clusters for setting security xattr */
1890 status = ocfs2_calc_security_init(dir, &si, &want_clusters,
1891 &xattr_credits, &xattr_ac);
1898 /* don't reserve bitmap space for fast symlinks. */
1899 if (l > ocfs2_fast_symlink_chars(sb))
1902 status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
1904 if (status != -ENOSPC)
1909 handle = ocfs2_start_trans(osb, credits + xattr_credits);
1910 if (IS_ERR(handle)) {
1911 status = PTR_ERR(handle);
1917 /* Starting to change things, restart is no longer possible. */
1918 ocfs2_block_signals(&oldset);
1919 did_block_signals = 1;
1921 status = dquot_alloc_inode(inode);
1924 did_quota_inode = 1;
1926 trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len,
1927 dentry->d_name.name,
1928 (unsigned long long)OCFS2_I(dir)->ip_blkno,
1931 status = ocfs2_mknod_locked(osb, dir, inode,
1932 0, &new_fe_bh, parent_fe_bh, handle,
1939 fe = (struct ocfs2_dinode *) new_fe_bh->b_data;
1942 inode->i_op = &ocfs2_symlink_inode_operations;
1943 inode_nohighmem(inode);
1944 if (l > ocfs2_fast_symlink_chars(sb)) {
1947 status = dquot_alloc_space_nodirty(inode,
1948 ocfs2_clusters_to_bytes(osb->sb, 1));
1952 inode->i_mapping->a_ops = &ocfs2_aops;
1953 status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0,
1955 handle, data_ac, NULL,
1958 if (status != -ENOSPC && status != -EINTR) {
1960 "Failed to extend file to %llu\n",
1961 (unsigned long long)newsize);
1967 i_size_write(inode, newsize);
1968 inode->i_blocks = ocfs2_inode_sector_count(inode);
1970 inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops;
1971 memcpy((char *) fe->id2.i_symlink, symname, l);
1972 i_size_write(inode, newsize);
1973 inode->i_blocks = 0;
1976 status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh);
1982 if (!ocfs2_inode_is_fast_symlink(inode)) {
1983 status = ocfs2_create_symlink_data(osb, handle, inode,
1992 status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
2001 * Do this before adding the entry to the directory. We add
2002 * also set d_op after success so that ->d_iput() will cleanup
2003 * the dentry lock even if ocfs2_add_entry() fails below.
2005 status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
2011 dl = dentry->d_fsdata;
2013 status = ocfs2_add_entry(handle, dentry, inode,
2014 le64_to_cpu(fe->i_blkno), parent_fe_bh,
2021 insert_inode_hash(inode);
2022 d_instantiate(dentry, inode);
2024 if (status < 0 && did_quota)
2025 dquot_free_space_nodirty(inode,
2026 ocfs2_clusters_to_bytes(osb->sb, 1));
2027 if (status < 0 && did_quota_inode)
2028 dquot_free_inode(inode);
2030 if (status < 0 && fe)
2031 ocfs2_set_links_count(fe, 0);
2032 ocfs2_commit_trans(osb, handle);
2035 ocfs2_inode_unlock(dir, 1);
2036 if (did_block_signals)
2037 ocfs2_unblock_signals(&oldset);
2040 brelse(parent_fe_bh);
2042 ocfs2_free_dir_lookup_result(&lookup);
2044 ocfs2_free_alloc_context(inode_ac);
2046 ocfs2_free_alloc_context(data_ac);
2048 ocfs2_free_alloc_context(xattr_ac);
2049 if ((status < 0) && inode) {
2051 ocfs2_cleanup_add_entry_failure(osb, dentry, inode);
2053 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR;
2064 static int ocfs2_blkno_stringify(u64 blkno, char *name)
2066 int status, namelen;
2068 namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx",
2078 if (namelen != OCFS2_ORPHAN_NAMELEN) {
2084 trace_ocfs2_blkno_stringify(blkno, name, namelen);
2093 static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb,
2094 struct inode **ret_orphan_dir,
2095 struct buffer_head **ret_orphan_dir_bh)
2097 struct inode *orphan_dir_inode;
2098 struct buffer_head *orphan_dir_bh = NULL;
2101 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
2102 ORPHAN_DIR_SYSTEM_INODE,
2104 if (!orphan_dir_inode) {
2110 inode_lock(orphan_dir_inode);
2112 ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
2114 inode_unlock(orphan_dir_inode);
2115 iput(orphan_dir_inode);
2121 *ret_orphan_dir = orphan_dir_inode;
2122 *ret_orphan_dir_bh = orphan_dir_bh;
2127 static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode,
2128 struct buffer_head *orphan_dir_bh,
2131 struct ocfs2_dir_lookup_result *lookup,
2135 struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb);
2137 (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) :
2138 OCFS2_ORPHAN_NAMELEN;
2141 ret = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s",
2142 OCFS2_DIO_ORPHAN_PREFIX);
2143 if (ret != OCFS2_DIO_ORPHAN_PREFIX_LEN) {
2149 ret = ocfs2_blkno_stringify(blkno,
2150 name + OCFS2_DIO_ORPHAN_PREFIX_LEN);
2152 ret = ocfs2_blkno_stringify(blkno, name);
2158 ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode,
2159 orphan_dir_bh, name,
2170 * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for
2171 * insertion of an orphan.
2172 * @osb: ocfs2 file system
2173 * @ret_orphan_dir: Orphan dir inode - returned locked!
2174 * @blkno: Actual block number of the inode to be inserted into orphan dir.
2175 * @lookup: dir lookup result, to be passed back into functions like
2178 * Returns zero on success and the ret_orphan_dir, name and lookup
2179 * fields will be populated.
2181 * Returns non-zero on failure.
2183 static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
2184 struct inode **ret_orphan_dir,
2187 struct ocfs2_dir_lookup_result *lookup,
2190 struct inode *orphan_dir_inode = NULL;
2191 struct buffer_head *orphan_dir_bh = NULL;
2194 ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode,
2201 ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh,
2202 blkno, name, lookup, dio);
2208 *ret_orphan_dir = orphan_dir_inode;
2211 brelse(orphan_dir_bh);
2214 ocfs2_inode_unlock(orphan_dir_inode, 1);
2215 inode_unlock(orphan_dir_inode);
2216 iput(orphan_dir_inode);
2224 static int ocfs2_orphan_add(struct ocfs2_super *osb,
2226 struct inode *inode,
2227 struct buffer_head *fe_bh,
2229 struct ocfs2_dir_lookup_result *lookup,
2230 struct inode *orphan_dir_inode,
2233 struct buffer_head *orphan_dir_bh = NULL;
2235 struct ocfs2_dinode *orphan_fe;
2236 struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data;
2238 (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) :
2239 OCFS2_ORPHAN_NAMELEN;
2241 trace_ocfs2_orphan_add_begin(
2242 (unsigned long long)OCFS2_I(inode)->ip_blkno);
2244 status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh);
2250 status = ocfs2_journal_access_di(handle,
2251 INODE_CACHE(orphan_dir_inode),
2253 OCFS2_JOURNAL_ACCESS_WRITE);
2260 * We're going to journal the change of i_flags and i_orphaned_slot.
2261 * It's safe anyway, though some callers may duplicate the journaling.
2262 * Journaling within the func just make the logic look more
2265 status = ocfs2_journal_access_di(handle,
2268 OCFS2_JOURNAL_ACCESS_WRITE);
2274 /* we're a cluster, and nlink can change on disk from
2275 * underneath us... */
2276 orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
2277 if (S_ISDIR(inode->i_mode))
2278 ocfs2_add_links_count(orphan_fe, 1);
2279 set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe));
2280 ocfs2_journal_dirty(handle, orphan_dir_bh);
2282 status = __ocfs2_add_entry(handle, orphan_dir_inode, name,
2284 OCFS2_I(inode)->ip_blkno,
2285 orphan_dir_bh, lookup);
2292 /* Update flag OCFS2_DIO_ORPHANED_FL and record the orphan
2295 fe->i_flags |= cpu_to_le32(OCFS2_DIO_ORPHANED_FL);
2296 fe->i_dio_orphaned_slot = cpu_to_le16(osb->slot_num);
2298 fe->i_flags |= cpu_to_le32(OCFS2_ORPHANED_FL);
2299 OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR;
2301 /* Record which orphan dir our inode now resides
2302 * in. delete_inode will use this to determine which orphan
2304 fe->i_orphaned_slot = cpu_to_le16(osb->slot_num);
2307 ocfs2_journal_dirty(handle, fe_bh);
2309 trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno,
2314 if (S_ISDIR(inode->i_mode))
2315 ocfs2_add_links_count(orphan_fe, -1);
2316 set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe));
2320 brelse(orphan_dir_bh);
2325 /* unlike orphan_add, we expect the orphan dir to already be locked here. */
2326 int ocfs2_orphan_del(struct ocfs2_super *osb,
2328 struct inode *orphan_dir_inode,
2329 struct inode *inode,
2330 struct buffer_head *orphan_dir_bh,
2333 const int namelen = OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN;
2334 char name[namelen + 1];
2335 struct ocfs2_dinode *orphan_fe;
2337 struct ocfs2_dir_lookup_result lookup = { NULL, };
2340 status = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s",
2341 OCFS2_DIO_ORPHAN_PREFIX);
2342 if (status != OCFS2_DIO_ORPHAN_PREFIX_LEN) {
2348 status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno,
2349 name + OCFS2_DIO_ORPHAN_PREFIX_LEN);
2351 status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name);
2357 trace_ocfs2_orphan_del(
2358 (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno,
2359 name, strlen(name));
2361 status = ocfs2_journal_access_di(handle,
2362 INODE_CACHE(orphan_dir_inode),
2364 OCFS2_JOURNAL_ACCESS_WRITE);
2370 /* find it's spot in the orphan directory */
2371 status = ocfs2_find_entry(name, strlen(name), orphan_dir_inode,
2378 /* remove it from the orphan directory */
2379 status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup);
2385 /* do the i_nlink dance! :) */
2386 orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
2387 if (S_ISDIR(inode->i_mode))
2388 ocfs2_add_links_count(orphan_fe, -1);
2389 set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe));
2390 ocfs2_journal_dirty(handle, orphan_dir_bh);
2393 ocfs2_free_dir_lookup_result(&lookup);
2401 * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to receive a newly
2402 * allocated file. This is different from the typical 'add to orphan dir'
2403 * operation in that the inode does not yet exist. This is a problem because
2404 * the orphan dir stringifies the inode block number to come up with it's
2405 * dirent. Obviously if the inode does not yet exist we have a chicken and egg
2406 * problem. This function works around it by calling deeper into the orphan
2407 * and suballoc code than other callers. Use this only by necessity.
2408 * @dir: The directory which this inode will ultimately wind up under - not the
2410 * @dir_bh: buffer_head the @dir inode block
2411 * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled
2412 * with the string to be used for orphan dirent. Pass back to the orphan dir
2414 * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan
2416 * @ret_di_blkno: block number where the new inode will be allocated.
2417 * @orphan_insert: Dir insert context to be passed back into orphan dir code.
2418 * @ret_inode_ac: Inode alloc context to be passed back to the allocator.
2420 * Returns zero on success and the ret_orphan_dir, name and lookup
2421 * fields will be populated.
2423 * Returns non-zero on failure.
2425 static int ocfs2_prep_new_orphaned_file(struct inode *dir,
2426 struct buffer_head *dir_bh,
2428 struct inode **ret_orphan_dir,
2430 struct ocfs2_dir_lookup_result *orphan_insert,
2431 struct ocfs2_alloc_context **ret_inode_ac)
2435 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
2436 struct inode *orphan_dir = NULL;
2437 struct buffer_head *orphan_dir_bh = NULL;
2438 struct ocfs2_alloc_context *inode_ac = NULL;
2440 ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh);
2446 /* reserve an inode spot */
2447 ret = ocfs2_reserve_new_inode(osb, &inode_ac);
2454 ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac,
2461 ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh,
2462 di_blkno, orphan_name, orphan_insert,
2471 *ret_orphan_dir = orphan_dir;
2472 *ret_di_blkno = di_blkno;
2473 *ret_inode_ac = inode_ac;
2475 * orphan_name and orphan_insert are already up to
2476 * date via prepare_orphan_dir
2479 /* Unroll reserve_new_inode* */
2481 ocfs2_free_alloc_context(inode_ac);
2483 /* Unroll orphan dir locking */
2484 inode_unlock(orphan_dir);
2485 ocfs2_inode_unlock(orphan_dir, 1);
2489 brelse(orphan_dir_bh);
2494 int ocfs2_create_inode_in_orphan(struct inode *dir,
2496 struct inode **new_inode)
2498 int status, did_quota_inode = 0;
2499 struct inode *inode = NULL;
2500 struct inode *orphan_dir = NULL;
2501 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
2502 struct ocfs2_dinode *di = NULL;
2503 handle_t *handle = NULL;
2504 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
2505 struct buffer_head *parent_di_bh = NULL;
2506 struct buffer_head *new_di_bh = NULL;
2507 struct ocfs2_alloc_context *inode_ac = NULL;
2508 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
2509 u64 uninitialized_var(di_blkno), suballoc_loc;
2512 status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
2514 if (status != -ENOENT)
2519 status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh,
2520 orphan_name, &orphan_dir,
2521 &di_blkno, &orphan_insert, &inode_ac);
2523 if (status != -ENOSPC)
2528 inode = ocfs2_get_init_inode(dir, mode);
2529 if (IS_ERR(inode)) {
2530 status = PTR_ERR(inode);
2536 handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0));
2537 if (IS_ERR(handle)) {
2538 status = PTR_ERR(handle);
2544 status = dquot_alloc_inode(inode);
2547 did_quota_inode = 1;
2549 status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac,
2551 &suballoc_bit, di_blkno);
2558 /* do the real work now. */
2559 status = __ocfs2_mknod_locked(dir, inode,
2560 0, &new_di_bh, parent_di_bh, handle,
2561 inode_ac, di_blkno, suballoc_loc,
2568 di = (struct ocfs2_dinode *)new_di_bh->b_data;
2569 status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name,
2570 &orphan_insert, orphan_dir, false);
2576 /* get open lock so that only nodes can't remove it from orphan dir. */
2577 status = ocfs2_open_lock(inode);
2581 insert_inode_hash(inode);
2583 if (status < 0 && did_quota_inode)
2584 dquot_free_inode(inode);
2586 ocfs2_commit_trans(osb, handle);
2589 /* This was locked for us in ocfs2_prepare_orphan_dir() */
2590 ocfs2_inode_unlock(orphan_dir, 1);
2591 inode_unlock(orphan_dir);
2595 if ((status < 0) && inode) {
2601 ocfs2_free_alloc_context(inode_ac);
2608 ocfs2_free_dir_lookup_result(&orphan_insert);
2610 ocfs2_inode_unlock(dir, 1);
2611 brelse(parent_di_bh);
2615 int ocfs2_add_inode_to_orphan(struct ocfs2_super *osb,
2616 struct inode *inode)
2618 char orphan_name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1];
2619 struct inode *orphan_dir_inode = NULL;
2620 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
2621 struct buffer_head *di_bh = NULL;
2623 handle_t *handle = NULL;
2624 struct ocfs2_dinode *di = NULL;
2626 status = ocfs2_inode_lock(inode, &di_bh, 1);
2632 di = (struct ocfs2_dinode *) di_bh->b_data;
2634 * Another append dio crashed?
2635 * If so, manually recover it first.
2637 if (unlikely(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))) {
2638 status = ocfs2_truncate_file(inode, di_bh, i_size_read(inode));
2640 if (status != -ENOSPC)
2642 goto bail_unlock_inode;
2645 status = ocfs2_del_inode_from_orphan(osb, inode, di_bh, 0, 0);
2648 goto bail_unlock_inode;
2652 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir_inode,
2653 OCFS2_I(inode)->ip_blkno,
2659 goto bail_unlock_inode;
2662 handle = ocfs2_start_trans(osb,
2663 OCFS2_INODE_ADD_TO_ORPHAN_CREDITS);
2664 if (IS_ERR(handle)) {
2665 status = PTR_ERR(handle);
2666 goto bail_unlock_orphan;
2669 status = ocfs2_orphan_add(osb, handle, inode, di_bh, orphan_name,
2670 &orphan_insert, orphan_dir_inode, true);
2674 ocfs2_commit_trans(osb, handle);
2677 ocfs2_inode_unlock(orphan_dir_inode, 1);
2678 inode_unlock(orphan_dir_inode);
2679 iput(orphan_dir_inode);
2681 ocfs2_free_dir_lookup_result(&orphan_insert);
2684 ocfs2_inode_unlock(inode, 1);
2691 int ocfs2_del_inode_from_orphan(struct ocfs2_super *osb,
2692 struct inode *inode, struct buffer_head *di_bh,
2693 int update_isize, loff_t end)
2695 struct inode *orphan_dir_inode = NULL;
2696 struct buffer_head *orphan_dir_bh = NULL;
2697 struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
2698 handle_t *handle = NULL;
2701 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
2702 ORPHAN_DIR_SYSTEM_INODE,
2703 le16_to_cpu(di->i_dio_orphaned_slot));
2704 if (!orphan_dir_inode) {
2710 inode_lock(orphan_dir_inode);
2711 status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
2713 inode_unlock(orphan_dir_inode);
2714 iput(orphan_dir_inode);
2719 handle = ocfs2_start_trans(osb,
2720 OCFS2_INODE_DEL_FROM_ORPHAN_CREDITS);
2721 if (IS_ERR(handle)) {
2722 status = PTR_ERR(handle);
2723 goto bail_unlock_orphan;
2726 BUG_ON(!(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL)));
2728 status = ocfs2_orphan_del(osb, handle, orphan_dir_inode,
2729 inode, orphan_dir_bh, true);
2735 status = ocfs2_journal_access_di(handle,
2738 OCFS2_JOURNAL_ACCESS_WRITE);
2744 di->i_flags &= ~cpu_to_le32(OCFS2_DIO_ORPHANED_FL);
2745 di->i_dio_orphaned_slot = 0;
2748 status = ocfs2_set_inode_size(handle, inode, di_bh, end);
2752 ocfs2_journal_dirty(handle, di_bh);
2755 ocfs2_commit_trans(osb, handle);
2758 ocfs2_inode_unlock(orphan_dir_inode, 1);
2759 inode_unlock(orphan_dir_inode);
2760 brelse(orphan_dir_bh);
2761 iput(orphan_dir_inode);
2767 int ocfs2_mv_orphaned_inode_to_new(struct inode *dir,
2768 struct inode *inode,
2769 struct dentry *dentry)
2772 struct buffer_head *parent_di_bh = NULL;
2773 handle_t *handle = NULL;
2774 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
2775 struct ocfs2_dinode *dir_di, *di;
2776 struct inode *orphan_dir_inode = NULL;
2777 struct buffer_head *orphan_dir_bh = NULL;
2778 struct buffer_head *di_bh = NULL;
2779 struct ocfs2_dir_lookup_result lookup = { NULL, };
2781 trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry,
2782 dentry->d_name.len, dentry->d_name.name,
2783 (unsigned long long)OCFS2_I(dir)->ip_blkno,
2784 (unsigned long long)OCFS2_I(inode)->ip_blkno);
2786 status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
2788 if (status != -ENOENT)
2793 dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data;
2794 if (!dir_di->i_links_count) {
2795 /* can't make a file in a deleted directory. */
2800 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
2801 dentry->d_name.len);
2805 /* get a spot inside the dir. */
2806 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh,
2807 dentry->d_name.name,
2808 dentry->d_name.len, &lookup);
2814 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
2815 ORPHAN_DIR_SYSTEM_INODE,
2817 if (!orphan_dir_inode) {
2823 inode_lock(orphan_dir_inode);
2825 status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
2828 inode_unlock(orphan_dir_inode);
2829 iput(orphan_dir_inode);
2833 status = ocfs2_read_inode_block(inode, &di_bh);
2839 handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb));
2840 if (IS_ERR(handle)) {
2841 status = PTR_ERR(handle);
2847 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
2848 di_bh, OCFS2_JOURNAL_ACCESS_WRITE);
2854 status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode,
2855 orphan_dir_bh, false);
2861 di = (struct ocfs2_dinode *)di_bh->b_data;
2862 di->i_flags &= ~cpu_to_le32(OCFS2_ORPHANED_FL);
2863 di->i_orphaned_slot = 0;
2864 set_nlink(inode, 1);
2865 ocfs2_set_links_count(di, inode->i_nlink);
2866 ocfs2_update_inode_fsync_trans(handle, inode, 1);
2867 ocfs2_journal_dirty(handle, di_bh);
2869 status = ocfs2_add_entry(handle, dentry, inode,
2870 OCFS2_I(inode)->ip_blkno, parent_di_bh,
2877 status = ocfs2_dentry_attach_lock(dentry, inode,
2878 OCFS2_I(dir)->ip_blkno);
2884 d_instantiate(dentry, inode);
2887 ocfs2_commit_trans(osb, handle);
2889 ocfs2_inode_unlock(orphan_dir_inode, 1);
2890 inode_unlock(orphan_dir_inode);
2891 iput(orphan_dir_inode);
2894 ocfs2_inode_unlock(dir, 1);
2897 brelse(parent_di_bh);
2898 brelse(orphan_dir_bh);
2900 ocfs2_free_dir_lookup_result(&lookup);
2908 const struct inode_operations ocfs2_dir_iops = {
2909 .create = ocfs2_create,
2910 .lookup = ocfs2_lookup,
2912 .unlink = ocfs2_unlink,
2913 .rmdir = ocfs2_unlink,
2914 .symlink = ocfs2_symlink,
2915 .mkdir = ocfs2_mkdir,
2916 .mknod = ocfs2_mknod,
2917 .rename = ocfs2_rename,
2918 .setattr = ocfs2_setattr,
2919 .getattr = ocfs2_getattr,
2920 .permission = ocfs2_permission,
2921 .listxattr = ocfs2_listxattr,
2922 .fiemap = ocfs2_fiemap,
2923 .get_acl = ocfs2_iop_get_acl,
2924 .set_acl = ocfs2_iop_set_acl,