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 buffer_head *new_fe_bh = NULL;
248 struct inode *inode = NULL;
249 struct ocfs2_alloc_context *inode_ac = NULL;
250 struct ocfs2_alloc_context *data_ac = NULL;
251 struct ocfs2_alloc_context *meta_ac = NULL;
252 int want_clusters = 0;
254 int xattr_credits = 0;
255 struct ocfs2_security_xattr_info si = {
258 int did_quota_inode = 0;
259 struct ocfs2_dir_lookup_result lookup = { NULL, };
261 int did_block_signals = 0;
262 struct posix_acl *default_acl = NULL, *acl = NULL;
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 status = posix_acl_create(dir, &mode, &default_acl, &acl);
376 handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb,
379 if (IS_ERR(handle)) {
380 status = PTR_ERR(handle);
386 /* Starting to change things, restart is no longer possible. */
387 ocfs2_block_signals(&oldset);
388 did_block_signals = 1;
390 status = dquot_alloc_inode(inode);
395 /* do the real work now. */
396 status = ocfs2_mknod_locked(osb, dir, inode, dev,
397 &new_fe_bh, parent_fe_bh, handle,
405 status = ocfs2_fill_new_dir(osb, handle, dir, inode,
406 new_fe_bh, data_ac, meta_ac);
412 status = ocfs2_journal_access_di(handle, INODE_CACHE(dir),
414 OCFS2_JOURNAL_ACCESS_WRITE);
419 ocfs2_add_links_count(dirfe, 1);
420 ocfs2_journal_dirty(handle, parent_fe_bh);
425 status = ocfs2_set_acl(handle, inode, new_fe_bh,
426 ACL_TYPE_DEFAULT, default_acl,
429 if (!status && acl) {
430 status = ocfs2_set_acl(handle, inode, new_fe_bh,
431 ACL_TYPE_ACCESS, acl,
441 status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
450 * Do this before adding the entry to the directory. We add
451 * also set d_op after success so that ->d_iput() will cleanup
452 * the dentry lock even if ocfs2_add_entry() fails below.
454 status = ocfs2_dentry_attach_lock(dentry, inode,
455 OCFS2_I(dir)->ip_blkno);
461 dl = dentry->d_fsdata;
463 status = ocfs2_add_entry(handle, dentry, inode,
464 OCFS2_I(inode)->ip_blkno, parent_fe_bh,
471 insert_inode_hash(inode);
472 d_instantiate(dentry, inode);
476 posix_acl_release(default_acl);
478 posix_acl_release(acl);
479 if (status < 0 && did_quota_inode)
480 dquot_free_inode(inode);
482 ocfs2_commit_trans(osb, handle);
484 ocfs2_inode_unlock(dir, 1);
485 if (did_block_signals)
486 ocfs2_unblock_signals(&oldset);
489 brelse(parent_fe_bh);
492 ocfs2_free_dir_lookup_result(&lookup);
495 ocfs2_free_alloc_context(inode_ac);
498 ocfs2_free_alloc_context(data_ac);
501 ocfs2_free_alloc_context(meta_ac);
504 * We should call iput after the i_mutex of the bitmap been
505 * unlocked in ocfs2_free_alloc_context, or the
506 * ocfs2_delete_inode will mutex_lock again.
508 if ((status < 0) && inode) {
510 ocfs2_cleanup_add_entry_failure(osb, dentry, inode);
512 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR;
523 static int __ocfs2_mknod_locked(struct inode *dir,
526 struct buffer_head **new_fe_bh,
527 struct buffer_head *parent_fe_bh,
529 struct ocfs2_alloc_context *inode_ac,
530 u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit)
533 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
534 struct ocfs2_dinode *fe = NULL;
535 struct ocfs2_extent_list *fel;
537 struct ocfs2_inode_info *oi = OCFS2_I(inode);
541 /* populate as many fields early on as possible - many of
542 * these are used by the support functions here and in
544 inode->i_ino = ino_from_blkno(osb->sb, fe_blkno);
545 OCFS2_I(inode)->ip_blkno = fe_blkno;
546 spin_lock(&osb->osb_lock);
547 inode->i_generation = osb->s_next_generation++;
548 spin_unlock(&osb->osb_lock);
550 *new_fe_bh = sb_getblk(osb->sb, fe_blkno);
556 ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh);
558 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
560 OCFS2_JOURNAL_ACCESS_CREATE);
566 fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data;
567 memset(fe, 0, osb->sb->s_blocksize);
569 fe->i_generation = cpu_to_le32(inode->i_generation);
570 fe->i_fs_generation = cpu_to_le32(osb->fs_generation);
571 fe->i_blkno = cpu_to_le64(fe_blkno);
572 fe->i_suballoc_loc = cpu_to_le64(suballoc_loc);
573 fe->i_suballoc_bit = cpu_to_le16(suballoc_bit);
574 fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot);
575 fe->i_uid = cpu_to_le32(i_uid_read(inode));
576 fe->i_gid = cpu_to_le32(i_gid_read(inode));
577 fe->i_mode = cpu_to_le16(inode->i_mode);
578 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
579 fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev));
581 ocfs2_set_links_count(fe, inode->i_nlink);
583 fe->i_last_eb_blk = 0;
584 strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE);
585 fe->i_flags |= cpu_to_le32(OCFS2_VALID_FL);
586 fe->i_atime = fe->i_ctime = fe->i_mtime =
587 cpu_to_le64(CURRENT_TIME.tv_sec);
588 fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec =
589 cpu_to_le32(CURRENT_TIME.tv_nsec);
593 * If supported, directories start with inline data. If inline
594 * isn't supported, but indexing is, we start them as indexed.
596 feat = le16_to_cpu(fe->i_dyn_features);
597 if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) {
598 fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL);
600 fe->id2.i_data.id_count = cpu_to_le16(
601 ocfs2_max_inline_data_with_xattr(osb->sb, fe));
603 fel = &fe->id2.i_list;
604 fel->l_tree_depth = 0;
605 fel->l_next_free_rec = 0;
606 fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb));
609 ocfs2_journal_dirty(handle, *new_fe_bh);
611 ocfs2_populate_inode(inode, fe, 1);
612 ocfs2_ci_set_new(osb, INODE_CACHE(inode));
613 if (!ocfs2_mount_local(osb)) {
614 status = ocfs2_create_new_inode_locks(inode);
619 oi->i_sync_tid = handle->h_transaction->t_tid;
620 oi->i_datasync_tid = handle->h_transaction->t_tid;
635 static int ocfs2_mknod_locked(struct ocfs2_super *osb,
639 struct buffer_head **new_fe_bh,
640 struct buffer_head *parent_fe_bh,
642 struct ocfs2_alloc_context *inode_ac)
645 u64 suballoc_loc, fe_blkno = 0;
650 status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh,
651 inode_ac, &suballoc_loc,
652 &suballoc_bit, &fe_blkno);
658 return __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh,
659 parent_fe_bh, handle, inode_ac,
660 fe_blkno, suballoc_loc, suballoc_bit);
663 static int ocfs2_mkdir(struct inode *dir,
664 struct dentry *dentry,
669 trace_ocfs2_mkdir(dir, dentry, dentry->d_name.len, dentry->d_name.name,
670 OCFS2_I(dir)->ip_blkno, mode);
671 ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0);
678 static int ocfs2_create(struct inode *dir,
679 struct dentry *dentry,
685 trace_ocfs2_create(dir, dentry, dentry->d_name.len, dentry->d_name.name,
686 (unsigned long long)OCFS2_I(dir)->ip_blkno, mode);
687 ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0);
694 static int ocfs2_link(struct dentry *old_dentry,
696 struct dentry *dentry)
699 struct inode *inode = d_inode(old_dentry);
700 struct inode *old_dir = d_inode(old_dentry->d_parent);
702 struct buffer_head *fe_bh = NULL;
703 struct buffer_head *old_dir_bh = NULL;
704 struct buffer_head *parent_fe_bh = NULL;
705 struct ocfs2_dinode *fe = NULL;
706 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
707 struct ocfs2_dir_lookup_result lookup = { NULL, };
711 trace_ocfs2_link((unsigned long long)OCFS2_I(inode)->ip_blkno,
712 old_dentry->d_name.len, old_dentry->d_name.name,
713 dentry->d_name.len, dentry->d_name.name);
715 if (S_ISDIR(inode->i_mode))
718 err = dquot_initialize(dir);
724 err = ocfs2_double_lock(osb, &old_dir_bh, old_dir,
725 &parent_fe_bh, dir, 0);
732 /* make sure both dirs have bhs
733 * get an extra ref on old_dir_bh if old==new */
736 parent_fe_bh = old_dir_bh;
737 get_bh(parent_fe_bh);
739 mlog(ML_ERROR, "%s: no old_dir_bh!\n", osb->uuid_str);
750 err = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name,
751 old_dentry->d_name.len, &old_de_ino);
758 * Check whether another node removed the source inode while we
761 if (old_de_ino != OCFS2_I(inode)->ip_blkno) {
766 err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
771 err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
773 dentry->d_name.len, &lookup);
779 err = ocfs2_inode_lock(inode, &fe_bh, 1);
786 fe = (struct ocfs2_dinode *) fe_bh->b_data;
787 if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) {
789 goto out_unlock_inode;
792 handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb));
793 if (IS_ERR(handle)) {
794 err = PTR_ERR(handle);
797 goto out_unlock_inode;
800 /* Starting to change things, restart is no longer possible. */
801 ocfs2_block_signals(&oldset);
803 err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh,
804 OCFS2_JOURNAL_ACCESS_WRITE);
811 inode->i_ctime = CURRENT_TIME;
812 ocfs2_set_links_count(fe, inode->i_nlink);
813 fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
814 fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
815 ocfs2_journal_dirty(handle, fe_bh);
817 err = ocfs2_add_entry(handle, dentry, inode,
818 OCFS2_I(inode)->ip_blkno,
819 parent_fe_bh, &lookup);
821 ocfs2_add_links_count(fe, -1);
827 err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
834 d_instantiate(dentry, inode);
837 ocfs2_commit_trans(osb, handle);
838 ocfs2_unblock_signals(&oldset);
840 ocfs2_inode_unlock(inode, 1);
843 ocfs2_double_unlock(old_dir, dir);
846 brelse(parent_fe_bh);
849 ocfs2_free_dir_lookup_result(&lookup);
858 * Takes and drops an exclusive lock on the given dentry. This will
859 * force other nodes to drop it.
861 static int ocfs2_remote_dentry_delete(struct dentry *dentry)
865 ret = ocfs2_dentry_lock(dentry, 1);
869 ocfs2_dentry_unlock(dentry, 1);
874 static inline int ocfs2_inode_is_unlinkable(struct inode *inode)
876 if (S_ISDIR(inode->i_mode)) {
877 if (inode->i_nlink == 2)
882 if (inode->i_nlink == 1)
887 static int ocfs2_unlink(struct inode *dir,
888 struct dentry *dentry)
891 int child_locked = 0;
892 bool is_unlinkable = false;
893 struct inode *inode = d_inode(dentry);
894 struct inode *orphan_dir = NULL;
895 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
897 struct ocfs2_dinode *fe = NULL;
898 struct buffer_head *fe_bh = NULL;
899 struct buffer_head *parent_node_bh = NULL;
900 handle_t *handle = NULL;
901 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
902 struct ocfs2_dir_lookup_result lookup = { NULL, };
903 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
905 trace_ocfs2_unlink(dir, dentry, dentry->d_name.len,
907 (unsigned long long)OCFS2_I(dir)->ip_blkno,
908 (unsigned long long)OCFS2_I(inode)->ip_blkno);
910 status = dquot_initialize(dir);
916 BUG_ON(d_inode(dentry->d_parent) != dir);
918 if (inode == osb->root_inode)
921 status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1,
924 if (status != -ENOENT)
929 status = ocfs2_find_files_on_disk(dentry->d_name.name,
930 dentry->d_name.len, &blkno, dir,
933 if (status != -ENOENT)
938 if (OCFS2_I(inode)->ip_blkno != blkno) {
941 trace_ocfs2_unlink_noent(
942 (unsigned long long)OCFS2_I(inode)->ip_blkno,
943 (unsigned long long)blkno,
944 OCFS2_I(inode)->ip_flags);
948 status = ocfs2_inode_lock(inode, &fe_bh, 1);
950 if (status != -ENOENT)
956 if (S_ISDIR(inode->i_mode)) {
957 if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) {
963 status = ocfs2_remote_dentry_delete(dentry);
965 /* This remote delete should succeed under all normal
971 if (ocfs2_inode_is_unlinkable(inode)) {
972 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
973 OCFS2_I(inode)->ip_blkno,
974 orphan_name, &orphan_insert,
980 is_unlinkable = true;
983 handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb));
984 if (IS_ERR(handle)) {
985 status = PTR_ERR(handle);
991 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh,
992 OCFS2_JOURNAL_ACCESS_WRITE);
998 fe = (struct ocfs2_dinode *) fe_bh->b_data;
1000 /* delete the name from the parent dir */
1001 status = ocfs2_delete_entry(handle, dir, &lookup);
1007 if (S_ISDIR(inode->i_mode))
1010 ocfs2_set_links_count(fe, inode->i_nlink);
1011 ocfs2_journal_dirty(handle, fe_bh);
1013 dir->i_ctime = dir->i_mtime = CURRENT_TIME;
1014 if (S_ISDIR(inode->i_mode))
1017 status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh);
1020 if (S_ISDIR(inode->i_mode))
1025 if (is_unlinkable) {
1026 status = ocfs2_orphan_add(osb, handle, inode, fe_bh,
1027 orphan_name, &orphan_insert, orphan_dir, false);
1034 ocfs2_commit_trans(osb, handle);
1037 /* This was locked for us in ocfs2_prepare_orphan_dir() */
1038 ocfs2_inode_unlock(orphan_dir, 1);
1039 mutex_unlock(&orphan_dir->i_mutex);
1044 ocfs2_inode_unlock(inode, 1);
1046 ocfs2_inode_unlock(dir, 1);
1049 brelse(parent_node_bh);
1051 ocfs2_free_dir_lookup_result(&orphan_insert);
1052 ocfs2_free_dir_lookup_result(&lookup);
1054 if (status && (status != -ENOTEMPTY) && (status != -ENOENT))
1060 static int ocfs2_check_if_ancestor(struct ocfs2_super *osb,
1061 u64 src_inode_no, u64 dest_inode_no)
1064 u64 parent_inode_no = 0;
1065 u64 child_inode_no = src_inode_no;
1066 struct inode *child_inode;
1068 #define MAX_LOOKUP_TIMES 32
1070 child_inode = ocfs2_iget(osb, child_inode_no, 0, 0);
1071 if (IS_ERR(child_inode)) {
1072 ret = PTR_ERR(child_inode);
1076 ret = ocfs2_inode_lock(child_inode, NULL, 0);
1084 ret = ocfs2_lookup_ino_from_name(child_inode, "..", 2,
1086 ocfs2_inode_unlock(child_inode, 0);
1093 if (parent_inode_no == dest_inode_no) {
1098 if (parent_inode_no == osb->root_inode->i_ino) {
1103 child_inode_no = parent_inode_no;
1105 if (++i >= MAX_LOOKUP_TIMES) {
1106 mlog(ML_NOTICE, "max lookup times reached, filesystem "
1107 "may have nested directories, "
1108 "src inode: %llu, dest inode: %llu.\n",
1109 (unsigned long long)src_inode_no,
1110 (unsigned long long)dest_inode_no);
1120 * The only place this should be used is rename and link!
1121 * if they have the same id, then the 1st one is the only one locked.
1123 static int ocfs2_double_lock(struct ocfs2_super *osb,
1124 struct buffer_head **bh1,
1125 struct inode *inode1,
1126 struct buffer_head **bh2,
1127 struct inode *inode2,
1131 int inode1_is_ancestor, inode2_is_ancestor;
1132 struct ocfs2_inode_info *oi1 = OCFS2_I(inode1);
1133 struct ocfs2_inode_info *oi2 = OCFS2_I(inode2);
1135 trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno,
1136 (unsigned long long)oi2->ip_blkno);
1143 /* we always want to lock the one with the lower lockid first.
1144 * and if they are nested, we lock ancestor first */
1145 if (oi1->ip_blkno != oi2->ip_blkno) {
1146 inode1_is_ancestor = ocfs2_check_if_ancestor(osb, oi2->ip_blkno,
1148 if (inode1_is_ancestor < 0) {
1149 status = inode1_is_ancestor;
1153 inode2_is_ancestor = ocfs2_check_if_ancestor(osb, oi1->ip_blkno,
1155 if (inode2_is_ancestor < 0) {
1156 status = inode2_is_ancestor;
1160 if ((inode1_is_ancestor == 1) ||
1161 (oi1->ip_blkno < oi2->ip_blkno &&
1162 inode2_is_ancestor == 0)) {
1163 /* switch id1 and id2 around */
1165 swap(inode2, inode1);
1168 status = ocfs2_inode_lock_nested(inode2, bh2, 1,
1169 rename == 1 ? OI_LS_RENAME1 : OI_LS_PARENT);
1171 if (status != -ENOENT)
1178 status = ocfs2_inode_lock_nested(inode1, bh1, 1,
1179 rename == 1 ? OI_LS_RENAME2 : OI_LS_PARENT);
1182 * An error return must mean that no cluster locks
1183 * were held on function exit.
1185 if (oi1->ip_blkno != oi2->ip_blkno) {
1186 ocfs2_inode_unlock(inode2, 1);
1191 if (status != -ENOENT)
1195 trace_ocfs2_double_lock_end(
1196 (unsigned long long)OCFS2_I(inode1)->ip_blkno,
1197 (unsigned long long)OCFS2_I(inode2)->ip_blkno);
1205 static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2)
1207 ocfs2_inode_unlock(inode1, 1);
1209 if (inode1 != inode2)
1210 ocfs2_inode_unlock(inode2, 1);
1213 static int ocfs2_rename(struct inode *old_dir,
1214 struct dentry *old_dentry,
1215 struct inode *new_dir,
1216 struct dentry *new_dentry)
1218 int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0;
1219 int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0;
1220 struct inode *old_inode = d_inode(old_dentry);
1221 struct inode *new_inode = d_inode(new_dentry);
1222 struct inode *orphan_dir = NULL;
1223 struct ocfs2_dinode *newfe = NULL;
1224 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
1225 struct buffer_head *newfe_bh = NULL;
1226 struct buffer_head *old_inode_bh = NULL;
1227 struct ocfs2_super *osb = NULL;
1228 u64 newfe_blkno, old_de_ino;
1229 handle_t *handle = NULL;
1230 struct buffer_head *old_dir_bh = NULL;
1231 struct buffer_head *new_dir_bh = NULL;
1232 u32 old_dir_nlink = old_dir->i_nlink;
1233 struct ocfs2_dinode *old_di;
1234 struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, };
1235 struct ocfs2_dir_lookup_result target_lookup_res = { NULL, };
1236 struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, };
1237 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
1238 struct ocfs2_dir_lookup_result target_insert = { NULL, };
1239 bool should_add_orphan = false;
1241 /* At some point it might be nice to break this function up a
1244 trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry,
1245 old_dentry->d_name.len, old_dentry->d_name.name,
1246 new_dentry->d_name.len, new_dentry->d_name.name);
1248 status = dquot_initialize(old_dir);
1253 status = dquot_initialize(new_dir);
1259 osb = OCFS2_SB(old_dir->i_sb);
1262 if (!igrab(new_inode))
1266 /* Assume a directory hierarchy thusly:
1269 * a,b,c, and d are all directories.
1271 * from cwd of 'a' on both nodes:
1275 * And that's why, just like the VFS, we need a file system
1277 if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) {
1278 status = ocfs2_rename_lock(osb);
1285 /* here we cannot guarantee the inodes haven't just been
1286 * changed, so check if they are nested again */
1287 status = ocfs2_check_if_ancestor(osb, new_dir->i_ino,
1292 } else if (status == 1) {
1294 trace_ocfs2_rename_not_permitted(
1295 (unsigned long long)old_inode->i_ino,
1296 (unsigned long long)new_dir->i_ino);
1301 /* if old and new are the same, this'll just do one lock. */
1302 status = ocfs2_double_lock(osb, &old_dir_bh, old_dir,
1303 &new_dir_bh, new_dir, 1);
1310 if (!new_dir->i_nlink) {
1315 /* make sure both dirs have bhs
1316 * get an extra ref on old_dir_bh if old==new */
1319 new_dir_bh = old_dir_bh;
1322 mlog(ML_ERROR, "no old_dir_bh!\n");
1329 * Aside from allowing a meta data update, the locking here
1330 * also ensures that the downconvert thread on other nodes
1331 * won't have to concurrently downconvert the inode and the
1334 status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1,
1337 if (status != -ENOENT)
1341 old_child_locked = 1;
1343 status = ocfs2_remote_dentry_delete(old_dentry);
1349 if (S_ISDIR(old_inode->i_mode)) {
1350 u64 old_inode_parent;
1353 status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent,
1355 &old_inode_dot_dot_res);
1361 if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) {
1366 if (!new_inode && new_dir != old_dir &&
1367 new_dir->i_nlink >= ocfs2_link_max(osb)) {
1373 status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name,
1374 old_dentry->d_name.len,
1382 * Check for inode number is _not_ due to possible IO errors.
1383 * We might rmdir the source, keep it as pwd of some process
1384 * and merrily kill the link to whatever was created under the
1385 * same name. Goodbye sticky bit ;-<
1387 if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) {
1392 /* check if the target already exists (in which case we need
1394 status = ocfs2_find_files_on_disk(new_dentry->d_name.name,
1395 new_dentry->d_name.len,
1396 &newfe_blkno, new_dir,
1397 &target_lookup_res);
1398 /* The only error we allow here is -ENOENT because the new
1399 * file not existing is perfectly valid. */
1400 if ((status < 0) && (status != -ENOENT)) {
1401 /* If we cannot find the file specified we should just */
1402 /* return the error... */
1409 if (!target_exists && new_inode) {
1411 * Target was unlinked by another node while we were
1412 * waiting to get to ocfs2_rename(). There isn't
1413 * anything we can do here to help the situation, so
1414 * bubble up the appropriate error.
1420 /* In case we need to overwrite an existing file, we blow it
1422 if (target_exists) {
1423 /* VFS didn't think there existed an inode here, but
1424 * someone else in the cluster must have raced our
1425 * rename to create one. Today we error cleanly, in
1426 * the future we should consider calling iget to build
1427 * a new struct inode for this entry. */
1431 trace_ocfs2_rename_target_exists(new_dentry->d_name.len,
1432 new_dentry->d_name.name);
1436 if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) {
1439 trace_ocfs2_rename_disagree(
1440 (unsigned long long)OCFS2_I(new_inode)->ip_blkno,
1441 (unsigned long long)newfe_blkno,
1442 OCFS2_I(new_inode)->ip_flags);
1446 status = ocfs2_inode_lock(new_inode, &newfe_bh, 1);
1448 if (status != -ENOENT)
1452 new_child_locked = 1;
1454 status = ocfs2_remote_dentry_delete(new_dentry);
1460 newfe = (struct ocfs2_dinode *) newfe_bh->b_data;
1462 trace_ocfs2_rename_over_existing(
1463 (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ?
1464 (unsigned long long)newfe_bh->b_blocknr : 0ULL);
1466 if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) {
1467 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
1468 OCFS2_I(new_inode)->ip_blkno,
1469 orphan_name, &orphan_insert,
1475 should_add_orphan = true;
1478 BUG_ON(d_inode(new_dentry->d_parent) != new_dir);
1480 status = ocfs2_check_dir_for_entry(new_dir,
1481 new_dentry->d_name.name,
1482 new_dentry->d_name.len);
1486 status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh,
1487 new_dentry->d_name.name,
1488 new_dentry->d_name.len,
1496 handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb));
1497 if (IS_ERR(handle)) {
1498 status = PTR_ERR(handle);
1504 if (target_exists) {
1505 if (S_ISDIR(new_inode->i_mode)) {
1506 if (new_inode->i_nlink != 2 ||
1507 !ocfs2_empty_dir(new_inode)) {
1508 status = -ENOTEMPTY;
1512 status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode),
1514 OCFS2_JOURNAL_ACCESS_WRITE);
1520 /* change the dirent to point to the correct inode */
1521 status = ocfs2_update_entry(new_dir, handle, &target_lookup_res,
1527 new_dir->i_version++;
1529 if (S_ISDIR(new_inode->i_mode))
1530 ocfs2_set_links_count(newfe, 0);
1532 ocfs2_add_links_count(newfe, -1);
1533 ocfs2_journal_dirty(handle, newfe_bh);
1534 if (should_add_orphan) {
1535 status = ocfs2_orphan_add(osb, handle, new_inode,
1536 newfe_bh, orphan_name,
1537 &orphan_insert, orphan_dir, false);
1544 /* if the name was not found in new_dir, add it now */
1545 status = ocfs2_add_entry(handle, new_dentry, old_inode,
1546 OCFS2_I(old_inode)->ip_blkno,
1547 new_dir_bh, &target_insert);
1550 old_inode->i_ctime = CURRENT_TIME;
1551 mark_inode_dirty(old_inode);
1553 status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode),
1555 OCFS2_JOURNAL_ACCESS_WRITE);
1557 old_di = (struct ocfs2_dinode *) old_inode_bh->b_data;
1559 old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec);
1560 old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec);
1561 ocfs2_journal_dirty(handle, old_inode_bh);
1566 * Now that the name has been added to new_dir, remove the old name.
1568 * We don't keep any directory entry context around until now
1569 * because the insert might have changed the type of directory
1570 * we're dealing with.
1572 status = ocfs2_find_entry(old_dentry->d_name.name,
1573 old_dentry->d_name.len, old_dir,
1576 if (!is_journal_aborted(osb->journal->j_journal)) {
1577 ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s "
1579 new_dentry->d_name.len, new_dentry->d_name.name,
1580 old_dentry->d_name.len, old_dentry->d_name.name);
1585 status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup);
1588 if (!is_journal_aborted(osb->journal->j_journal)) {
1589 ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s "
1591 new_dentry->d_name.len, new_dentry->d_name.name,
1592 old_dentry->d_name.len, old_dentry->d_name.name);
1598 drop_nlink(new_inode);
1599 new_inode->i_ctime = CURRENT_TIME;
1601 old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME;
1603 if (update_dot_dot) {
1604 status = ocfs2_update_entry(old_inode, handle,
1605 &old_inode_dot_dot_res, new_dir);
1606 drop_nlink(old_dir);
1608 drop_nlink(new_inode);
1611 mark_inode_dirty(new_dir);
1614 mark_inode_dirty(old_dir);
1615 ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh);
1617 mark_inode_dirty(new_inode);
1618 ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh);
1621 if (old_dir != new_dir) {
1622 /* Keep the same times on both directories.*/
1623 new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime;
1626 * This will also pick up the i_nlink change from the
1629 ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh);
1632 if (old_dir_nlink != old_dir->i_nlink) {
1634 mlog(ML_ERROR, "need to change nlink for old dir "
1635 "%llu from %d to %d but bh is NULL!\n",
1636 (unsigned long long)OCFS2_I(old_dir)->ip_blkno,
1637 (int)old_dir_nlink, old_dir->i_nlink);
1639 struct ocfs2_dinode *fe;
1640 status = ocfs2_journal_access_di(handle,
1641 INODE_CACHE(old_dir),
1643 OCFS2_JOURNAL_ACCESS_WRITE);
1644 fe = (struct ocfs2_dinode *) old_dir_bh->b_data;
1645 ocfs2_set_links_count(fe, old_dir->i_nlink);
1646 ocfs2_journal_dirty(handle, old_dir_bh);
1649 ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir);
1653 ocfs2_commit_trans(osb, handle);
1656 /* This was locked for us in ocfs2_prepare_orphan_dir() */
1657 ocfs2_inode_unlock(orphan_dir, 1);
1658 mutex_unlock(&orphan_dir->i_mutex);
1662 if (new_child_locked)
1663 ocfs2_inode_unlock(new_inode, 1);
1665 if (old_child_locked)
1666 ocfs2_inode_unlock(old_inode, 1);
1669 ocfs2_double_unlock(old_dir, new_dir);
1672 ocfs2_rename_unlock(osb);
1675 sync_mapping_buffers(old_inode->i_mapping);
1680 ocfs2_free_dir_lookup_result(&target_lookup_res);
1681 ocfs2_free_dir_lookup_result(&old_entry_lookup);
1682 ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res);
1683 ocfs2_free_dir_lookup_result(&orphan_insert);
1684 ocfs2_free_dir_lookup_result(&target_insert);
1687 brelse(old_inode_bh);
1698 * we expect i_size = strlen(symname). Copy symname into the file
1699 * data, including the null terminator.
1701 static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
1703 struct inode *inode,
1704 const char *symname)
1706 struct buffer_head **bhs = NULL;
1708 struct super_block *sb = osb->sb;
1709 u64 p_blkno, p_blocks;
1710 int virtual, blocks, status, i, bytes_left;
1712 bytes_left = i_size_read(inode) + 1;
1713 /* we can't trust i_blocks because we're actually going to
1714 * write i_size + 1 bytes. */
1715 blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
1717 trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks,
1718 i_size_read(inode), blocks);
1720 /* Sanity check -- make sure we're going to fit. */
1722 ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) {
1728 bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL);
1735 status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks,
1742 /* links can never be larger than one cluster so we know this
1743 * is all going to be contiguous, but do a sanity check
1745 if ((p_blocks << sb->s_blocksize_bits) < bytes_left) {
1752 while(bytes_left > 0) {
1753 c = &symname[virtual * sb->s_blocksize];
1755 bhs[virtual] = sb_getblk(sb, p_blkno);
1756 if (!bhs[virtual]) {
1761 ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode),
1764 status = ocfs2_journal_access(handle, INODE_CACHE(inode),
1766 OCFS2_JOURNAL_ACCESS_CREATE);
1772 memset(bhs[virtual]->b_data, 0, sb->s_blocksize);
1774 memcpy(bhs[virtual]->b_data, c,
1775 (bytes_left > sb->s_blocksize) ? sb->s_blocksize :
1778 ocfs2_journal_dirty(handle, bhs[virtual]);
1782 bytes_left -= sb->s_blocksize;
1789 for(i = 0; i < blocks; i++)
1799 static int ocfs2_symlink(struct inode *dir,
1800 struct dentry *dentry,
1801 const char *symname)
1803 int status, l, credits;
1805 struct ocfs2_super *osb = NULL;
1806 struct inode *inode = NULL;
1807 struct super_block *sb;
1808 struct buffer_head *new_fe_bh = NULL;
1809 struct buffer_head *parent_fe_bh = NULL;
1810 struct ocfs2_dinode *fe = NULL;
1811 struct ocfs2_dinode *dirfe;
1812 handle_t *handle = NULL;
1813 struct ocfs2_alloc_context *inode_ac = NULL;
1814 struct ocfs2_alloc_context *data_ac = NULL;
1815 struct ocfs2_alloc_context *xattr_ac = NULL;
1816 int want_clusters = 0;
1817 int xattr_credits = 0;
1818 struct ocfs2_security_xattr_info si = {
1821 int did_quota = 0, did_quota_inode = 0;
1822 struct ocfs2_dir_lookup_result lookup = { NULL, };
1824 int did_block_signals = 0;
1825 struct ocfs2_dentry_lock *dl = NULL;
1827 trace_ocfs2_symlink_begin(dir, dentry, symname,
1828 dentry->d_name.len, dentry->d_name.name);
1830 status = dquot_initialize(dir);
1839 l = strlen(symname) + 1;
1841 credits = ocfs2_calc_symlink_credits(sb);
1843 /* lock the parent directory */
1844 status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
1846 if (status != -ENOENT)
1851 dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
1852 if (!ocfs2_read_links_count(dirfe)) {
1853 /* can't make a file in a deleted directory. */
1858 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
1859 dentry->d_name.len);
1863 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
1864 dentry->d_name.name,
1865 dentry->d_name.len, &lookup);
1871 status = ocfs2_reserve_new_inode(osb, &inode_ac);
1873 if (status != -ENOSPC)
1878 inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO);
1879 if (IS_ERR(inode)) {
1880 status = PTR_ERR(inode);
1886 /* get security xattr */
1887 status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si);
1889 if (status == -EOPNOTSUPP)
1897 /* calculate meta data/clusters for setting security xattr */
1899 status = ocfs2_calc_security_init(dir, &si, &want_clusters,
1900 &xattr_credits, &xattr_ac);
1907 /* don't reserve bitmap space for fast symlinks. */
1908 if (l > ocfs2_fast_symlink_chars(sb))
1911 status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
1913 if (status != -ENOSPC)
1918 handle = ocfs2_start_trans(osb, credits + xattr_credits);
1919 if (IS_ERR(handle)) {
1920 status = PTR_ERR(handle);
1926 /* Starting to change things, restart is no longer possible. */
1927 ocfs2_block_signals(&oldset);
1928 did_block_signals = 1;
1930 status = dquot_alloc_inode(inode);
1933 did_quota_inode = 1;
1935 trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len,
1936 dentry->d_name.name,
1937 (unsigned long long)OCFS2_I(dir)->ip_blkno,
1940 status = ocfs2_mknod_locked(osb, dir, inode,
1941 0, &new_fe_bh, parent_fe_bh, handle,
1948 fe = (struct ocfs2_dinode *) new_fe_bh->b_data;
1951 inode->i_op = &ocfs2_symlink_inode_operations;
1952 if (l > ocfs2_fast_symlink_chars(sb)) {
1955 status = dquot_alloc_space_nodirty(inode,
1956 ocfs2_clusters_to_bytes(osb->sb, 1));
1960 inode->i_mapping->a_ops = &ocfs2_aops;
1961 status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0,
1963 handle, data_ac, NULL,
1966 if (status != -ENOSPC && status != -EINTR) {
1968 "Failed to extend file to %llu\n",
1969 (unsigned long long)newsize);
1975 i_size_write(inode, newsize);
1976 inode->i_blocks = ocfs2_inode_sector_count(inode);
1978 inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops;
1979 memcpy((char *) fe->id2.i_symlink, symname, l);
1980 i_size_write(inode, newsize);
1981 inode->i_blocks = 0;
1984 status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh);
1990 if (!ocfs2_inode_is_fast_symlink(inode)) {
1991 status = ocfs2_create_symlink_data(osb, handle, inode,
2000 status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
2009 * Do this before adding the entry to the directory. We add
2010 * also set d_op after success so that ->d_iput() will cleanup
2011 * the dentry lock even if ocfs2_add_entry() fails below.
2013 status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
2019 dl = dentry->d_fsdata;
2021 status = ocfs2_add_entry(handle, dentry, inode,
2022 le64_to_cpu(fe->i_blkno), parent_fe_bh,
2029 insert_inode_hash(inode);
2030 d_instantiate(dentry, inode);
2032 if (status < 0 && did_quota)
2033 dquot_free_space_nodirty(inode,
2034 ocfs2_clusters_to_bytes(osb->sb, 1));
2035 if (status < 0 && did_quota_inode)
2036 dquot_free_inode(inode);
2038 ocfs2_commit_trans(osb, handle);
2040 ocfs2_inode_unlock(dir, 1);
2041 if (did_block_signals)
2042 ocfs2_unblock_signals(&oldset);
2045 brelse(parent_fe_bh);
2047 ocfs2_free_dir_lookup_result(&lookup);
2049 ocfs2_free_alloc_context(inode_ac);
2051 ocfs2_free_alloc_context(data_ac);
2053 ocfs2_free_alloc_context(xattr_ac);
2054 if ((status < 0) && inode) {
2056 ocfs2_cleanup_add_entry_failure(osb, dentry, inode);
2058 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR;
2069 static int ocfs2_blkno_stringify(u64 blkno, char *name)
2071 int status, namelen;
2073 namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx",
2083 if (namelen != OCFS2_ORPHAN_NAMELEN) {
2089 trace_ocfs2_blkno_stringify(blkno, name, namelen);
2098 static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb,
2099 struct inode **ret_orphan_dir,
2100 struct buffer_head **ret_orphan_dir_bh)
2102 struct inode *orphan_dir_inode;
2103 struct buffer_head *orphan_dir_bh = NULL;
2106 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
2107 ORPHAN_DIR_SYSTEM_INODE,
2109 if (!orphan_dir_inode) {
2115 mutex_lock(&orphan_dir_inode->i_mutex);
2117 ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
2119 mutex_unlock(&orphan_dir_inode->i_mutex);
2120 iput(orphan_dir_inode);
2126 *ret_orphan_dir = orphan_dir_inode;
2127 *ret_orphan_dir_bh = orphan_dir_bh;
2132 static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode,
2133 struct buffer_head *orphan_dir_bh,
2136 struct ocfs2_dir_lookup_result *lookup,
2140 struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb);
2142 (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) :
2143 OCFS2_ORPHAN_NAMELEN;
2146 ret = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s",
2147 OCFS2_DIO_ORPHAN_PREFIX);
2148 if (ret != OCFS2_DIO_ORPHAN_PREFIX_LEN) {
2154 ret = ocfs2_blkno_stringify(blkno,
2155 name + OCFS2_DIO_ORPHAN_PREFIX_LEN);
2157 ret = ocfs2_blkno_stringify(blkno, name);
2163 ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode,
2164 orphan_dir_bh, name,
2175 * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for
2176 * insertion of an orphan.
2177 * @osb: ocfs2 file system
2178 * @ret_orphan_dir: Orphan dir inode - returned locked!
2179 * @blkno: Actual block number of the inode to be inserted into orphan dir.
2180 * @lookup: dir lookup result, to be passed back into functions like
2183 * Returns zero on success and the ret_orphan_dir, name and lookup
2184 * fields will be populated.
2186 * Returns non-zero on failure.
2188 static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
2189 struct inode **ret_orphan_dir,
2192 struct ocfs2_dir_lookup_result *lookup,
2195 struct inode *orphan_dir_inode = NULL;
2196 struct buffer_head *orphan_dir_bh = NULL;
2199 ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode,
2206 ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh,
2207 blkno, name, lookup, dio);
2213 *ret_orphan_dir = orphan_dir_inode;
2216 brelse(orphan_dir_bh);
2219 ocfs2_inode_unlock(orphan_dir_inode, 1);
2220 mutex_unlock(&orphan_dir_inode->i_mutex);
2221 iput(orphan_dir_inode);
2229 static int ocfs2_orphan_add(struct ocfs2_super *osb,
2231 struct inode *inode,
2232 struct buffer_head *fe_bh,
2234 struct ocfs2_dir_lookup_result *lookup,
2235 struct inode *orphan_dir_inode,
2238 struct buffer_head *orphan_dir_bh = NULL;
2240 struct ocfs2_dinode *orphan_fe;
2241 struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data;
2243 (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) :
2244 OCFS2_ORPHAN_NAMELEN;
2246 trace_ocfs2_orphan_add_begin(
2247 (unsigned long long)OCFS2_I(inode)->ip_blkno);
2249 status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh);
2255 status = ocfs2_journal_access_di(handle,
2256 INODE_CACHE(orphan_dir_inode),
2258 OCFS2_JOURNAL_ACCESS_WRITE);
2265 * We're going to journal the change of i_flags and i_orphaned_slot.
2266 * It's safe anyway, though some callers may duplicate the journaling.
2267 * Journaling within the func just make the logic look more
2270 status = ocfs2_journal_access_di(handle,
2273 OCFS2_JOURNAL_ACCESS_WRITE);
2279 /* we're a cluster, and nlink can change on disk from
2280 * underneath us... */
2281 orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
2282 if (S_ISDIR(inode->i_mode))
2283 ocfs2_add_links_count(orphan_fe, 1);
2284 set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe));
2285 ocfs2_journal_dirty(handle, orphan_dir_bh);
2287 status = __ocfs2_add_entry(handle, orphan_dir_inode, name,
2289 OCFS2_I(inode)->ip_blkno,
2290 orphan_dir_bh, lookup);
2297 /* Update flag OCFS2_DIO_ORPHANED_FL and record the orphan
2300 fe->i_flags |= cpu_to_le32(OCFS2_DIO_ORPHANED_FL);
2301 fe->i_dio_orphaned_slot = cpu_to_le16(osb->slot_num);
2303 fe->i_flags |= cpu_to_le32(OCFS2_ORPHANED_FL);
2304 OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR;
2306 /* Record which orphan dir our inode now resides
2307 * in. delete_inode will use this to determine which orphan
2309 fe->i_orphaned_slot = cpu_to_le16(osb->slot_num);
2312 ocfs2_journal_dirty(handle, fe_bh);
2314 trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno,
2319 if (S_ISDIR(inode->i_mode))
2320 ocfs2_add_links_count(orphan_fe, -1);
2321 set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe));
2325 brelse(orphan_dir_bh);
2330 /* unlike orphan_add, we expect the orphan dir to already be locked here. */
2331 int ocfs2_orphan_del(struct ocfs2_super *osb,
2333 struct inode *orphan_dir_inode,
2334 struct inode *inode,
2335 struct buffer_head *orphan_dir_bh,
2338 const int namelen = OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN;
2339 char name[namelen + 1];
2340 struct ocfs2_dinode *orphan_fe;
2342 struct ocfs2_dir_lookup_result lookup = { NULL, };
2345 status = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s",
2346 OCFS2_DIO_ORPHAN_PREFIX);
2347 if (status != OCFS2_DIO_ORPHAN_PREFIX_LEN) {
2353 status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno,
2354 name + OCFS2_DIO_ORPHAN_PREFIX_LEN);
2356 status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name);
2362 trace_ocfs2_orphan_del(
2363 (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno,
2364 name, strlen(name));
2366 /* find it's spot in the orphan directory */
2367 status = ocfs2_find_entry(name, strlen(name), orphan_dir_inode,
2374 /* remove it from the orphan directory */
2375 status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup);
2381 status = ocfs2_journal_access_di(handle,
2382 INODE_CACHE(orphan_dir_inode),
2384 OCFS2_JOURNAL_ACCESS_WRITE);
2390 /* do the i_nlink dance! :) */
2391 orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
2392 if (S_ISDIR(inode->i_mode))
2393 ocfs2_add_links_count(orphan_fe, -1);
2394 set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe));
2395 ocfs2_journal_dirty(handle, orphan_dir_bh);
2398 ocfs2_free_dir_lookup_result(&lookup);
2406 * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to receive a newly
2407 * allocated file. This is different from the typical 'add to orphan dir'
2408 * operation in that the inode does not yet exist. This is a problem because
2409 * the orphan dir stringifies the inode block number to come up with it's
2410 * dirent. Obviously if the inode does not yet exist we have a chicken and egg
2411 * problem. This function works around it by calling deeper into the orphan
2412 * and suballoc code than other callers. Use this only by necessity.
2413 * @dir: The directory which this inode will ultimately wind up under - not the
2415 * @dir_bh: buffer_head the @dir inode block
2416 * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled
2417 * with the string to be used for orphan dirent. Pass back to the orphan dir
2419 * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan
2421 * @ret_di_blkno: block number where the new inode will be allocated.
2422 * @orphan_insert: Dir insert context to be passed back into orphan dir code.
2423 * @ret_inode_ac: Inode alloc context to be passed back to the allocator.
2425 * Returns zero on success and the ret_orphan_dir, name and lookup
2426 * fields will be populated.
2428 * Returns non-zero on failure.
2430 static int ocfs2_prep_new_orphaned_file(struct inode *dir,
2431 struct buffer_head *dir_bh,
2433 struct inode **ret_orphan_dir,
2435 struct ocfs2_dir_lookup_result *orphan_insert,
2436 struct ocfs2_alloc_context **ret_inode_ac)
2440 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
2441 struct inode *orphan_dir = NULL;
2442 struct buffer_head *orphan_dir_bh = NULL;
2443 struct ocfs2_alloc_context *inode_ac = NULL;
2445 ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh);
2451 /* reserve an inode spot */
2452 ret = ocfs2_reserve_new_inode(osb, &inode_ac);
2459 ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac,
2466 ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh,
2467 di_blkno, orphan_name, orphan_insert,
2476 *ret_orphan_dir = orphan_dir;
2477 *ret_di_blkno = di_blkno;
2478 *ret_inode_ac = inode_ac;
2480 * orphan_name and orphan_insert are already up to
2481 * date via prepare_orphan_dir
2484 /* Unroll reserve_new_inode* */
2486 ocfs2_free_alloc_context(inode_ac);
2488 /* Unroll orphan dir locking */
2489 mutex_unlock(&orphan_dir->i_mutex);
2490 ocfs2_inode_unlock(orphan_dir, 1);
2494 brelse(orphan_dir_bh);
2499 int ocfs2_create_inode_in_orphan(struct inode *dir,
2501 struct inode **new_inode)
2503 int status, did_quota_inode = 0;
2504 struct inode *inode = NULL;
2505 struct inode *orphan_dir = NULL;
2506 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
2507 struct ocfs2_dinode *di = NULL;
2508 handle_t *handle = NULL;
2509 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
2510 struct buffer_head *parent_di_bh = NULL;
2511 struct buffer_head *new_di_bh = NULL;
2512 struct ocfs2_alloc_context *inode_ac = NULL;
2513 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
2514 u64 uninitialized_var(di_blkno), suballoc_loc;
2517 status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
2519 if (status != -ENOENT)
2524 status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh,
2525 orphan_name, &orphan_dir,
2526 &di_blkno, &orphan_insert, &inode_ac);
2528 if (status != -ENOSPC)
2533 inode = ocfs2_get_init_inode(dir, mode);
2534 if (IS_ERR(inode)) {
2535 status = PTR_ERR(inode);
2541 handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0));
2542 if (IS_ERR(handle)) {
2543 status = PTR_ERR(handle);
2549 status = dquot_alloc_inode(inode);
2552 did_quota_inode = 1;
2554 status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac,
2556 &suballoc_bit, di_blkno);
2563 /* do the real work now. */
2564 status = __ocfs2_mknod_locked(dir, inode,
2565 0, &new_di_bh, parent_di_bh, handle,
2566 inode_ac, di_blkno, suballoc_loc,
2573 di = (struct ocfs2_dinode *)new_di_bh->b_data;
2574 status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name,
2575 &orphan_insert, orphan_dir, false);
2581 /* get open lock so that only nodes can't remove it from orphan dir. */
2582 status = ocfs2_open_lock(inode);
2586 insert_inode_hash(inode);
2588 if (status < 0 && did_quota_inode)
2589 dquot_free_inode(inode);
2591 ocfs2_commit_trans(osb, handle);
2594 /* This was locked for us in ocfs2_prepare_orphan_dir() */
2595 ocfs2_inode_unlock(orphan_dir, 1);
2596 mutex_unlock(&orphan_dir->i_mutex);
2600 if ((status < 0) && inode) {
2606 ocfs2_free_alloc_context(inode_ac);
2613 ocfs2_free_dir_lookup_result(&orphan_insert);
2615 ocfs2_inode_unlock(dir, 1);
2616 brelse(parent_di_bh);
2620 int ocfs2_add_inode_to_orphan(struct ocfs2_super *osb,
2621 struct inode *inode)
2623 char orphan_name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1];
2624 struct inode *orphan_dir_inode = NULL;
2625 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
2626 struct buffer_head *di_bh = NULL;
2628 handle_t *handle = NULL;
2629 struct ocfs2_dinode *di = NULL;
2631 status = ocfs2_inode_lock(inode, &di_bh, 1);
2637 di = (struct ocfs2_dinode *) di_bh->b_data;
2639 * Another append dio crashed?
2640 * If so, manually recover it first.
2642 if (unlikely(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))) {
2643 status = ocfs2_truncate_file(inode, di_bh, i_size_read(inode));
2645 if (status != -ENOSPC)
2647 goto bail_unlock_inode;
2650 status = ocfs2_del_inode_from_orphan(osb, inode, di_bh, 0, 0);
2653 goto bail_unlock_inode;
2657 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir_inode,
2658 OCFS2_I(inode)->ip_blkno,
2664 goto bail_unlock_inode;
2667 handle = ocfs2_start_trans(osb,
2668 OCFS2_INODE_ADD_TO_ORPHAN_CREDITS);
2669 if (IS_ERR(handle)) {
2670 status = PTR_ERR(handle);
2671 goto bail_unlock_orphan;
2674 status = ocfs2_orphan_add(osb, handle, inode, di_bh, orphan_name,
2675 &orphan_insert, orphan_dir_inode, true);
2679 ocfs2_commit_trans(osb, handle);
2682 ocfs2_inode_unlock(orphan_dir_inode, 1);
2683 mutex_unlock(&orphan_dir_inode->i_mutex);
2684 iput(orphan_dir_inode);
2686 ocfs2_free_dir_lookup_result(&orphan_insert);
2689 ocfs2_inode_unlock(inode, 1);
2696 int ocfs2_del_inode_from_orphan(struct ocfs2_super *osb,
2697 struct inode *inode, struct buffer_head *di_bh,
2698 int update_isize, loff_t end)
2700 struct inode *orphan_dir_inode = NULL;
2701 struct buffer_head *orphan_dir_bh = NULL;
2702 struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
2703 handle_t *handle = NULL;
2706 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
2707 ORPHAN_DIR_SYSTEM_INODE,
2708 le16_to_cpu(di->i_dio_orphaned_slot));
2709 if (!orphan_dir_inode) {
2715 mutex_lock(&orphan_dir_inode->i_mutex);
2716 status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
2718 mutex_unlock(&orphan_dir_inode->i_mutex);
2719 iput(orphan_dir_inode);
2724 handle = ocfs2_start_trans(osb,
2725 OCFS2_INODE_DEL_FROM_ORPHAN_CREDITS);
2726 if (IS_ERR(handle)) {
2727 status = PTR_ERR(handle);
2728 goto bail_unlock_orphan;
2731 BUG_ON(!(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL)));
2733 status = ocfs2_orphan_del(osb, handle, orphan_dir_inode,
2734 inode, orphan_dir_bh, true);
2740 status = ocfs2_journal_access_di(handle,
2743 OCFS2_JOURNAL_ACCESS_WRITE);
2749 di->i_flags &= ~cpu_to_le32(OCFS2_DIO_ORPHANED_FL);
2750 di->i_dio_orphaned_slot = 0;
2753 status = ocfs2_set_inode_size(handle, inode, di_bh, end);
2757 ocfs2_journal_dirty(handle, di_bh);
2760 ocfs2_commit_trans(osb, handle);
2763 ocfs2_inode_unlock(orphan_dir_inode, 1);
2764 mutex_unlock(&orphan_dir_inode->i_mutex);
2765 brelse(orphan_dir_bh);
2766 iput(orphan_dir_inode);
2772 int ocfs2_mv_orphaned_inode_to_new(struct inode *dir,
2773 struct inode *inode,
2774 struct dentry *dentry)
2777 struct buffer_head *parent_di_bh = NULL;
2778 handle_t *handle = NULL;
2779 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
2780 struct ocfs2_dinode *dir_di, *di;
2781 struct inode *orphan_dir_inode = NULL;
2782 struct buffer_head *orphan_dir_bh = NULL;
2783 struct buffer_head *di_bh = NULL;
2784 struct ocfs2_dir_lookup_result lookup = { NULL, };
2786 trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry,
2787 dentry->d_name.len, dentry->d_name.name,
2788 (unsigned long long)OCFS2_I(dir)->ip_blkno,
2789 (unsigned long long)OCFS2_I(inode)->ip_blkno);
2791 status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
2793 if (status != -ENOENT)
2798 dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data;
2799 if (!dir_di->i_links_count) {
2800 /* can't make a file in a deleted directory. */
2805 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
2806 dentry->d_name.len);
2810 /* get a spot inside the dir. */
2811 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh,
2812 dentry->d_name.name,
2813 dentry->d_name.len, &lookup);
2819 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
2820 ORPHAN_DIR_SYSTEM_INODE,
2822 if (!orphan_dir_inode) {
2828 mutex_lock(&orphan_dir_inode->i_mutex);
2830 status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
2833 mutex_unlock(&orphan_dir_inode->i_mutex);
2834 iput(orphan_dir_inode);
2838 status = ocfs2_read_inode_block(inode, &di_bh);
2844 handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb));
2845 if (IS_ERR(handle)) {
2846 status = PTR_ERR(handle);
2852 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
2853 di_bh, OCFS2_JOURNAL_ACCESS_WRITE);
2859 status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode,
2860 orphan_dir_bh, false);
2866 di = (struct ocfs2_dinode *)di_bh->b_data;
2867 di->i_flags &= ~cpu_to_le32(OCFS2_ORPHANED_FL);
2868 di->i_orphaned_slot = 0;
2869 set_nlink(inode, 1);
2870 ocfs2_set_links_count(di, inode->i_nlink);
2871 ocfs2_update_inode_fsync_trans(handle, inode, 1);
2872 ocfs2_journal_dirty(handle, di_bh);
2874 status = ocfs2_add_entry(handle, dentry, inode,
2875 OCFS2_I(inode)->ip_blkno, parent_di_bh,
2882 status = ocfs2_dentry_attach_lock(dentry, inode,
2883 OCFS2_I(dir)->ip_blkno);
2889 d_instantiate(dentry, inode);
2892 ocfs2_commit_trans(osb, handle);
2894 ocfs2_inode_unlock(orphan_dir_inode, 1);
2895 mutex_unlock(&orphan_dir_inode->i_mutex);
2896 iput(orphan_dir_inode);
2899 ocfs2_inode_unlock(dir, 1);
2902 brelse(parent_di_bh);
2903 brelse(orphan_dir_bh);
2905 ocfs2_free_dir_lookup_result(&lookup);
2913 const struct inode_operations ocfs2_dir_iops = {
2914 .create = ocfs2_create,
2915 .lookup = ocfs2_lookup,
2917 .unlink = ocfs2_unlink,
2918 .rmdir = ocfs2_unlink,
2919 .symlink = ocfs2_symlink,
2920 .mkdir = ocfs2_mkdir,
2921 .mknod = ocfs2_mknod,
2922 .rename = ocfs2_rename,
2923 .setattr = ocfs2_setattr,
2924 .getattr = ocfs2_getattr,
2925 .permission = ocfs2_permission,
2926 .setxattr = generic_setxattr,
2927 .getxattr = generic_getxattr,
2928 .listxattr = ocfs2_listxattr,
2929 .removexattr = generic_removexattr,
2930 .fiemap = ocfs2_fiemap,
2931 .get_acl = ocfs2_iop_get_acl,
2932 .set_acl = ocfs2_iop_set_acl,