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 #define MLOG_MASK_PREFIX ML_NAMEI
46 #include <cluster/masklog.h>
54 #include "extent_map.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);
84 static int ocfs2_orphan_add(struct ocfs2_super *osb,
87 struct ocfs2_dinode *fe,
89 struct ocfs2_dir_lookup_result *lookup,
90 struct inode *orphan_dir_inode);
92 static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
97 /* An orphan dir name is an 8 byte value, printed as a hex string */
98 #define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64)))
100 static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry,
101 struct nameidata *nd)
105 struct inode *inode = NULL;
107 struct ocfs2_inode_info *oi;
109 mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry,
110 dentry->d_name.len, dentry->d_name.name);
112 if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) {
113 ret = ERR_PTR(-ENAMETOOLONG);
117 mlog(0, "find name %.*s in directory %llu\n", dentry->d_name.len,
118 dentry->d_name.name, (unsigned long long)OCFS2_I(dir)->ip_blkno);
120 status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT);
122 if (status != -ENOENT)
124 ret = ERR_PTR(status);
128 status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name,
129 dentry->d_name.len, &blkno);
133 inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0);
135 ret = ERR_PTR(-EACCES);
140 /* Clear any orphaned state... If we were able to look up the
141 * inode from a directory, it certainly can't be orphaned. We
142 * might have the bad state from a node which intended to
143 * orphan this inode but crashed before it could commit the
145 spin_lock(&oi->ip_lock);
146 oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED;
147 spin_unlock(&oi->ip_lock);
150 dentry->d_op = &ocfs2_dentry_ops;
151 ret = d_splice_alias(inode, dentry);
155 * If d_splice_alias() finds a DCACHE_DISCONNECTED
156 * dentry, it will d_move() it on top of ourse. The
157 * return value will indicate this however, so in
158 * those cases, we switch them around for the locking
161 * NOTE: This dentry already has ->d_op set from
162 * ocfs2_get_parent() and ocfs2_get_dentry()
167 status = ocfs2_dentry_attach_lock(dentry, inode,
168 OCFS2_I(dir)->ip_blkno);
171 ret = ERR_PTR(status);
177 /* Don't drop the cluster lock until *after* the d_add --
178 * unlink on another node will message us to remove that
179 * dentry under this lock so otherwise we can race this with
180 * the downconvert thread and have a stale dentry. */
181 ocfs2_inode_unlock(dir, 0);
190 static struct inode *ocfs2_get_init_inode(struct inode *dir, int mode)
194 inode = new_inode(dir->i_sb);
196 mlog(ML_ERROR, "new_inode failed!\n");
200 /* populate as many fields early on as possible - many of
201 * these are used by the support functions here and in
207 inode->i_uid = current_fsuid();
208 if (dir->i_mode & S_ISGID) {
209 inode->i_gid = dir->i_gid;
213 inode->i_gid = current_fsgid();
214 inode->i_mode = mode;
219 static int ocfs2_mknod(struct inode *dir,
220 struct dentry *dentry,
225 struct buffer_head *parent_fe_bh = NULL;
226 handle_t *handle = NULL;
227 struct ocfs2_super *osb;
228 struct ocfs2_dinode *dirfe;
229 struct buffer_head *new_fe_bh = NULL;
230 struct inode *inode = NULL;
231 struct ocfs2_alloc_context *inode_ac = NULL;
232 struct ocfs2_alloc_context *data_ac = NULL;
233 struct ocfs2_alloc_context *meta_ac = NULL;
234 int want_clusters = 0;
236 int xattr_credits = 0;
237 struct ocfs2_security_xattr_info si = {
240 int did_quota_inode = 0;
241 struct ocfs2_dir_lookup_result lookup = { NULL, };
243 mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, mode,
244 (unsigned long)dev, dentry->d_name.len,
245 dentry->d_name.name);
247 /* get our super block */
248 osb = OCFS2_SB(dir->i_sb);
250 status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
252 if (status != -ENOENT)
257 if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) {
262 dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
263 if (!ocfs2_read_links_count(dirfe)) {
264 /* can't make a file in a deleted directory. */
269 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
274 /* get a spot inside the dir. */
275 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
277 dentry->d_name.len, &lookup);
283 /* reserve an inode spot */
284 status = ocfs2_reserve_new_inode(osb, &inode_ac);
286 if (status != -ENOSPC)
291 inode = ocfs2_get_init_inode(dir, mode);
298 /* get security xattr */
299 status = ocfs2_init_security_get(inode, dir, &si);
301 if (status == -EOPNOTSUPP)
309 /* calculate meta data/clusters for setting security and acl xattr */
310 status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode,
312 &xattr_credits, &want_meta);
318 /* Reserve a cluster if creating an extent based directory. */
319 if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) {
322 /* Dir indexing requires extra space as well */
323 if (ocfs2_supports_indexed_dirs(osb))
327 status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac);
329 if (status != -ENOSPC)
334 status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
336 if (status != -ENOSPC)
341 handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb,
344 if (IS_ERR(handle)) {
345 status = PTR_ERR(handle);
351 /* We don't use standard VFS wrapper because we don't want vfs_dq_init
353 if (sb_any_quota_active(osb->sb) &&
354 osb->sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA) {
360 mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry,
361 inode->i_mode, (unsigned long)dev, dentry->d_name.len,
362 dentry->d_name.name);
364 /* do the real work now. */
365 status = ocfs2_mknod_locked(osb, dir, inode, dev,
366 &new_fe_bh, parent_fe_bh, handle,
374 status = ocfs2_fill_new_dir(osb, handle, dir, inode,
375 new_fe_bh, data_ac, meta_ac);
381 status = ocfs2_journal_access_di(handle, INODE_CACHE(dir),
383 OCFS2_JOURNAL_ACCESS_WRITE);
388 ocfs2_add_links_count(dirfe, 1);
389 status = ocfs2_journal_dirty(handle, parent_fe_bh);
397 status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh,
405 status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
413 status = ocfs2_add_entry(handle, dentry, inode,
414 OCFS2_I(inode)->ip_blkno, parent_fe_bh,
421 status = ocfs2_dentry_attach_lock(dentry, inode,
422 OCFS2_I(dir)->ip_blkno);
428 insert_inode_hash(inode);
429 dentry->d_op = &ocfs2_dentry_ops;
430 d_instantiate(dentry, inode);
433 if (status < 0 && did_quota_inode)
434 vfs_dq_free_inode(inode);
436 ocfs2_commit_trans(osb, handle);
438 ocfs2_inode_unlock(dir, 1);
440 if (status == -ENOSPC)
441 mlog(0, "Disk is full\n");
444 brelse(parent_fe_bh);
448 ocfs2_free_dir_lookup_result(&lookup);
450 if ((status < 0) && inode) {
456 ocfs2_free_alloc_context(inode_ac);
459 ocfs2_free_alloc_context(data_ac);
462 ocfs2_free_alloc_context(meta_ac);
469 static int ocfs2_mknod_locked(struct ocfs2_super *osb,
473 struct buffer_head **new_fe_bh,
474 struct buffer_head *parent_fe_bh,
476 struct ocfs2_alloc_context *inode_ac)
479 struct ocfs2_dinode *fe = NULL;
480 struct ocfs2_extent_list *fel;
487 status = ocfs2_claim_new_inode(osb, handle, dir, parent_fe_bh,
488 inode_ac, &suballoc_bit, &fe_blkno);
494 /* populate as many fields early on as possible - many of
495 * these are used by the support functions here and in
497 inode->i_ino = ino_from_blkno(osb->sb, fe_blkno);
498 OCFS2_I(inode)->ip_blkno = fe_blkno;
499 spin_lock(&osb->osb_lock);
500 inode->i_generation = osb->s_next_generation++;
501 spin_unlock(&osb->osb_lock);
503 *new_fe_bh = sb_getblk(osb->sb, fe_blkno);
509 ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh);
511 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
513 OCFS2_JOURNAL_ACCESS_CREATE);
519 fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data;
520 memset(fe, 0, osb->sb->s_blocksize);
522 fe->i_generation = cpu_to_le32(inode->i_generation);
523 fe->i_fs_generation = cpu_to_le32(osb->fs_generation);
524 fe->i_blkno = cpu_to_le64(fe_blkno);
525 fe->i_suballoc_bit = cpu_to_le16(suballoc_bit);
526 fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot);
527 fe->i_uid = cpu_to_le32(inode->i_uid);
528 fe->i_gid = cpu_to_le32(inode->i_gid);
529 fe->i_mode = cpu_to_le16(inode->i_mode);
530 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
531 fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev));
533 ocfs2_set_links_count(fe, inode->i_nlink);
535 fe->i_last_eb_blk = 0;
536 strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE);
537 le32_add_cpu(&fe->i_flags, OCFS2_VALID_FL);
538 fe->i_atime = fe->i_ctime = fe->i_mtime =
539 cpu_to_le64(CURRENT_TIME.tv_sec);
540 fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec =
541 cpu_to_le32(CURRENT_TIME.tv_nsec);
545 * If supported, directories start with inline data. If inline
546 * isn't supported, but indexing is, we start them as indexed.
548 feat = le16_to_cpu(fe->i_dyn_features);
549 if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) {
550 fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL);
552 fe->id2.i_data.id_count = cpu_to_le16(
553 ocfs2_max_inline_data_with_xattr(osb->sb, fe));
555 fel = &fe->id2.i_list;
556 fel->l_tree_depth = 0;
557 fel->l_next_free_rec = 0;
558 fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb));
561 status = ocfs2_journal_dirty(handle, *new_fe_bh);
567 ocfs2_populate_inode(inode, fe, 1);
568 ocfs2_ci_set_new(osb, INODE_CACHE(inode));
569 if (!ocfs2_mount_local(osb)) {
570 status = ocfs2_create_new_inode_locks(inode);
575 status = 0; /* error in ocfs2_create_new_inode_locks is not
590 static int ocfs2_mkdir(struct inode *dir,
591 struct dentry *dentry,
596 mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode,
597 dentry->d_name.len, dentry->d_name.name);
598 ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0);
604 static int ocfs2_create(struct inode *dir,
605 struct dentry *dentry,
607 struct nameidata *nd)
611 mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode,
612 dentry->d_name.len, dentry->d_name.name);
613 ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0);
619 static int ocfs2_link(struct dentry *old_dentry,
621 struct dentry *dentry)
624 struct inode *inode = old_dentry->d_inode;
626 struct buffer_head *fe_bh = NULL;
627 struct buffer_head *parent_fe_bh = NULL;
628 struct ocfs2_dinode *fe = NULL;
629 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
630 struct ocfs2_dir_lookup_result lookup = { NULL, };
632 mlog_entry("(inode=%lu, old='%.*s' new='%.*s')\n", inode->i_ino,
633 old_dentry->d_name.len, old_dentry->d_name.name,
634 dentry->d_name.len, dentry->d_name.name);
636 if (S_ISDIR(inode->i_mode))
639 err = ocfs2_inode_lock_nested(dir, &parent_fe_bh, 1, OI_LS_PARENT);
651 err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
656 err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
658 dentry->d_name.len, &lookup);
664 err = ocfs2_inode_lock(inode, &fe_bh, 1);
671 fe = (struct ocfs2_dinode *) fe_bh->b_data;
672 if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) {
674 goto out_unlock_inode;
677 handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb));
678 if (IS_ERR(handle)) {
679 err = PTR_ERR(handle);
682 goto out_unlock_inode;
685 err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh,
686 OCFS2_JOURNAL_ACCESS_WRITE);
693 inode->i_ctime = CURRENT_TIME;
694 ocfs2_set_links_count(fe, inode->i_nlink);
695 fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
696 fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
698 err = ocfs2_journal_dirty(handle, fe_bh);
700 ocfs2_add_links_count(fe, -1);
706 err = ocfs2_add_entry(handle, dentry, inode,
707 OCFS2_I(inode)->ip_blkno,
708 parent_fe_bh, &lookup);
710 ocfs2_add_links_count(fe, -1);
716 err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
722 atomic_inc(&inode->i_count);
723 dentry->d_op = &ocfs2_dentry_ops;
724 d_instantiate(dentry, inode);
727 ocfs2_commit_trans(osb, handle);
729 ocfs2_inode_unlock(inode, 1);
732 ocfs2_inode_unlock(dir, 1);
735 brelse(parent_fe_bh);
737 ocfs2_free_dir_lookup_result(&lookup);
745 * Takes and drops an exclusive lock on the given dentry. This will
746 * force other nodes to drop it.
748 static int ocfs2_remote_dentry_delete(struct dentry *dentry)
752 ret = ocfs2_dentry_lock(dentry, 1);
756 ocfs2_dentry_unlock(dentry, 1);
761 static inline int inode_is_unlinkable(struct inode *inode)
763 if (S_ISDIR(inode->i_mode)) {
764 if (inode->i_nlink == 2)
769 if (inode->i_nlink == 1)
774 static int ocfs2_unlink(struct inode *dir,
775 struct dentry *dentry)
778 int child_locked = 0;
779 struct inode *inode = dentry->d_inode;
780 struct inode *orphan_dir = NULL;
781 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
783 struct ocfs2_dinode *fe = NULL;
784 struct buffer_head *fe_bh = NULL;
785 struct buffer_head *parent_node_bh = NULL;
786 handle_t *handle = NULL;
787 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
788 struct ocfs2_dir_lookup_result lookup = { NULL, };
789 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
791 mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry,
792 dentry->d_name.len, dentry->d_name.name);
794 BUG_ON(dentry->d_parent->d_inode != dir);
796 mlog(0, "ino = %llu\n", (unsigned long long)OCFS2_I(inode)->ip_blkno);
798 if (inode == osb->root_inode) {
799 mlog(0, "Cannot delete the root directory\n");
803 status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1,
806 if (status != -ENOENT)
811 status = ocfs2_find_files_on_disk(dentry->d_name.name,
812 dentry->d_name.len, &blkno, dir,
815 if (status != -ENOENT)
820 if (OCFS2_I(inode)->ip_blkno != blkno) {
823 mlog(0, "ip_blkno %llu != dirent blkno %llu ip_flags = %x\n",
824 (unsigned long long)OCFS2_I(inode)->ip_blkno,
825 (unsigned long long)blkno, OCFS2_I(inode)->ip_flags);
829 status = ocfs2_inode_lock(inode, &fe_bh, 1);
831 if (status != -ENOENT)
837 if (S_ISDIR(inode->i_mode)) {
838 if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) {
844 status = ocfs2_remote_dentry_delete(dentry);
846 /* This remote delete should succeed under all normal
852 if (inode_is_unlinkable(inode)) {
853 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
854 OCFS2_I(inode)->ip_blkno,
855 orphan_name, &orphan_insert);
862 handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb));
863 if (IS_ERR(handle)) {
864 status = PTR_ERR(handle);
870 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh,
871 OCFS2_JOURNAL_ACCESS_WRITE);
877 fe = (struct ocfs2_dinode *) fe_bh->b_data;
879 if (inode_is_unlinkable(inode)) {
880 status = ocfs2_orphan_add(osb, handle, inode, fe, orphan_name,
881 &orphan_insert, orphan_dir);
888 /* delete the name from the parent dir */
889 status = ocfs2_delete_entry(handle, dir, &lookup);
895 if (S_ISDIR(inode->i_mode))
898 ocfs2_set_links_count(fe, inode->i_nlink);
900 status = ocfs2_journal_dirty(handle, fe_bh);
906 dir->i_ctime = dir->i_mtime = CURRENT_TIME;
907 if (S_ISDIR(inode->i_mode))
910 status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh);
913 if (S_ISDIR(inode->i_mode))
919 ocfs2_commit_trans(osb, handle);
922 ocfs2_inode_unlock(inode, 1);
924 ocfs2_inode_unlock(dir, 1);
927 /* This was locked for us in ocfs2_prepare_orphan_dir() */
928 ocfs2_inode_unlock(orphan_dir, 1);
929 mutex_unlock(&orphan_dir->i_mutex);
934 brelse(parent_node_bh);
936 ocfs2_free_dir_lookup_result(&orphan_insert);
937 ocfs2_free_dir_lookup_result(&lookup);
945 * The only place this should be used is rename!
946 * if they have the same id, then the 1st one is the only one locked.
948 static int ocfs2_double_lock(struct ocfs2_super *osb,
949 struct buffer_head **bh1,
950 struct inode *inode1,
951 struct buffer_head **bh2,
952 struct inode *inode2)
955 struct ocfs2_inode_info *oi1 = OCFS2_I(inode1);
956 struct ocfs2_inode_info *oi2 = OCFS2_I(inode2);
957 struct buffer_head **tmpbh;
958 struct inode *tmpinode;
960 mlog_entry("(inode1 = %llu, inode2 = %llu)\n",
961 (unsigned long long)oi1->ip_blkno,
962 (unsigned long long)oi2->ip_blkno);
969 /* we always want to lock the one with the lower lockid first. */
970 if (oi1->ip_blkno != oi2->ip_blkno) {
971 if (oi1->ip_blkno < oi2->ip_blkno) {
972 /* switch id1 and id2 around */
973 mlog(0, "switching them around...\n");
983 status = ocfs2_inode_lock_nested(inode2, bh2, 1,
986 if (status != -ENOENT)
993 status = ocfs2_inode_lock_nested(inode1, bh1, 1, OI_LS_RENAME2);
996 * An error return must mean that no cluster locks
997 * were held on function exit.
999 if (oi1->ip_blkno != oi2->ip_blkno)
1000 ocfs2_inode_unlock(inode2, 1);
1002 if (status != -ENOENT)
1011 static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2)
1013 ocfs2_inode_unlock(inode1, 1);
1015 if (inode1 != inode2)
1016 ocfs2_inode_unlock(inode2, 1);
1019 static int ocfs2_rename(struct inode *old_dir,
1020 struct dentry *old_dentry,
1021 struct inode *new_dir,
1022 struct dentry *new_dentry)
1024 int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0;
1025 int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0;
1026 struct inode *old_inode = old_dentry->d_inode;
1027 struct inode *new_inode = new_dentry->d_inode;
1028 struct inode *orphan_dir = NULL;
1029 struct ocfs2_dinode *newfe = NULL;
1030 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
1031 struct buffer_head *newfe_bh = NULL;
1032 struct buffer_head *old_inode_bh = NULL;
1033 struct ocfs2_super *osb = NULL;
1034 u64 newfe_blkno, old_de_ino;
1035 handle_t *handle = NULL;
1036 struct buffer_head *old_dir_bh = NULL;
1037 struct buffer_head *new_dir_bh = NULL;
1038 nlink_t old_dir_nlink = old_dir->i_nlink;
1039 struct ocfs2_dinode *old_di;
1040 struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, };
1041 struct ocfs2_dir_lookup_result target_lookup_res = { NULL, };
1042 struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, };
1043 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
1044 struct ocfs2_dir_lookup_result target_insert = { NULL, };
1046 /* At some point it might be nice to break this function up a
1049 mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p, from='%.*s' to='%.*s')\n",
1050 old_dir, old_dentry, new_dir, new_dentry,
1051 old_dentry->d_name.len, old_dentry->d_name.name,
1052 new_dentry->d_name.len, new_dentry->d_name.name);
1054 osb = OCFS2_SB(old_dir->i_sb);
1057 if (!igrab(new_inode))
1061 /* Assume a directory hierarchy thusly:
1064 * a,b,c, and d are all directories.
1066 * from cwd of 'a' on both nodes:
1070 * And that's why, just like the VFS, we need a file system
1072 if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) {
1073 status = ocfs2_rename_lock(osb);
1081 /* if old and new are the same, this'll just do one lock. */
1082 status = ocfs2_double_lock(osb, &old_dir_bh, old_dir,
1083 &new_dir_bh, new_dir);
1090 /* make sure both dirs have bhs
1091 * get an extra ref on old_dir_bh if old==new */
1094 new_dir_bh = old_dir_bh;
1097 mlog(ML_ERROR, "no old_dir_bh!\n");
1104 * Aside from allowing a meta data update, the locking here
1105 * also ensures that the downconvert thread on other nodes
1106 * won't have to concurrently downconvert the inode and the
1109 status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1,
1112 if (status != -ENOENT)
1116 old_child_locked = 1;
1118 status = ocfs2_remote_dentry_delete(old_dentry);
1124 if (S_ISDIR(old_inode->i_mode)) {
1125 u64 old_inode_parent;
1128 status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent,
1130 &old_inode_dot_dot_res);
1136 if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) {
1141 if (!new_inode && new_dir != old_dir &&
1142 new_dir->i_nlink >= ocfs2_link_max(osb)) {
1148 status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name,
1149 old_dentry->d_name.len,
1157 * Check for inode number is _not_ due to possible IO errors.
1158 * We might rmdir the source, keep it as pwd of some process
1159 * and merrily kill the link to whatever was created under the
1160 * same name. Goodbye sticky bit ;-<
1162 if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) {
1167 /* check if the target already exists (in which case we need
1169 status = ocfs2_find_files_on_disk(new_dentry->d_name.name,
1170 new_dentry->d_name.len,
1171 &newfe_blkno, new_dir,
1172 &target_lookup_res);
1173 /* The only error we allow here is -ENOENT because the new
1174 * file not existing is perfectly valid. */
1175 if ((status < 0) && (status != -ENOENT)) {
1176 /* If we cannot find the file specified we should just */
1177 /* return the error... */
1184 if (!target_exists && new_inode) {
1186 * Target was unlinked by another node while we were
1187 * waiting to get to ocfs2_rename(). There isn't
1188 * anything we can do here to help the situation, so
1189 * bubble up the appropriate error.
1195 /* In case we need to overwrite an existing file, we blow it
1197 if (target_exists) {
1198 /* VFS didn't think there existed an inode here, but
1199 * someone else in the cluster must have raced our
1200 * rename to create one. Today we error cleanly, in
1201 * the future we should consider calling iget to build
1202 * a new struct inode for this entry. */
1206 mlog(0, "We found an inode for name %.*s but VFS "
1207 "didn't give us one.\n", new_dentry->d_name.len,
1208 new_dentry->d_name.name);
1212 if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) {
1215 mlog(0, "Inode %llu and dir %llu disagree. flags = %x\n",
1216 (unsigned long long)OCFS2_I(new_inode)->ip_blkno,
1217 (unsigned long long)newfe_blkno,
1218 OCFS2_I(new_inode)->ip_flags);
1222 status = ocfs2_inode_lock(new_inode, &newfe_bh, 1);
1224 if (status != -ENOENT)
1228 new_child_locked = 1;
1230 status = ocfs2_remote_dentry_delete(new_dentry);
1236 newfe = (struct ocfs2_dinode *) newfe_bh->b_data;
1238 mlog(0, "aha rename over existing... new_blkno=%llu "
1239 "newfebh=%p bhblocknr=%llu\n",
1240 (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ?
1241 (unsigned long long)newfe_bh->b_blocknr : 0ULL);
1243 if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) {
1244 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
1245 OCFS2_I(new_inode)->ip_blkno,
1246 orphan_name, &orphan_insert);
1253 BUG_ON(new_dentry->d_parent->d_inode != new_dir);
1255 status = ocfs2_check_dir_for_entry(new_dir,
1256 new_dentry->d_name.name,
1257 new_dentry->d_name.len);
1261 status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh,
1262 new_dentry->d_name.name,
1263 new_dentry->d_name.len,
1271 handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb));
1272 if (IS_ERR(handle)) {
1273 status = PTR_ERR(handle);
1279 if (target_exists) {
1280 if (S_ISDIR(new_inode->i_mode)) {
1281 if (new_inode->i_nlink != 2 ||
1282 !ocfs2_empty_dir(new_inode)) {
1283 status = -ENOTEMPTY;
1287 status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode),
1289 OCFS2_JOURNAL_ACCESS_WRITE);
1295 if (S_ISDIR(new_inode->i_mode) ||
1296 (ocfs2_read_links_count(newfe) == 1)) {
1297 status = ocfs2_orphan_add(osb, handle, new_inode,
1299 &orphan_insert, orphan_dir);
1306 /* change the dirent to point to the correct inode */
1307 status = ocfs2_update_entry(new_dir, handle, &target_lookup_res,
1313 new_dir->i_version++;
1315 if (S_ISDIR(new_inode->i_mode))
1316 ocfs2_set_links_count(newfe, 0);
1318 ocfs2_add_links_count(newfe, -1);
1320 status = ocfs2_journal_dirty(handle, newfe_bh);
1326 /* if the name was not found in new_dir, add it now */
1327 status = ocfs2_add_entry(handle, new_dentry, old_inode,
1328 OCFS2_I(old_inode)->ip_blkno,
1329 new_dir_bh, &target_insert);
1332 old_inode->i_ctime = CURRENT_TIME;
1333 mark_inode_dirty(old_inode);
1335 status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode),
1337 OCFS2_JOURNAL_ACCESS_WRITE);
1339 old_di = (struct ocfs2_dinode *) old_inode_bh->b_data;
1341 old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec);
1342 old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec);
1344 status = ocfs2_journal_dirty(handle, old_inode_bh);
1351 * Now that the name has been added to new_dir, remove the old name.
1353 * We don't keep any directory entry context around until now
1354 * because the insert might have changed the type of directory
1355 * we're dealing with.
1357 status = ocfs2_find_entry(old_dentry->d_name.name,
1358 old_dentry->d_name.len, old_dir,
1363 status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup);
1370 new_inode->i_nlink--;
1371 new_inode->i_ctime = CURRENT_TIME;
1373 old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME;
1375 if (update_dot_dot) {
1376 status = ocfs2_update_entry(old_inode, handle,
1377 &old_inode_dot_dot_res, new_dir);
1380 new_inode->i_nlink--;
1383 mark_inode_dirty(new_dir);
1386 mark_inode_dirty(old_dir);
1387 ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh);
1389 mark_inode_dirty(new_inode);
1390 ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh);
1393 if (old_dir != new_dir) {
1394 /* Keep the same times on both directories.*/
1395 new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime;
1398 * This will also pick up the i_nlink change from the
1401 ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh);
1404 if (old_dir_nlink != old_dir->i_nlink) {
1406 mlog(ML_ERROR, "need to change nlink for old dir "
1407 "%llu from %d to %d but bh is NULL!\n",
1408 (unsigned long long)OCFS2_I(old_dir)->ip_blkno,
1409 (int)old_dir_nlink, old_dir->i_nlink);
1411 struct ocfs2_dinode *fe;
1412 status = ocfs2_journal_access_di(handle,
1413 INODE_CACHE(old_dir),
1415 OCFS2_JOURNAL_ACCESS_WRITE);
1416 fe = (struct ocfs2_dinode *) old_dir_bh->b_data;
1417 ocfs2_set_links_count(fe, old_dir->i_nlink);
1418 status = ocfs2_journal_dirty(handle, old_dir_bh);
1421 ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir);
1425 ocfs2_rename_unlock(osb);
1428 ocfs2_commit_trans(osb, handle);
1431 ocfs2_double_unlock(old_dir, new_dir);
1433 if (old_child_locked)
1434 ocfs2_inode_unlock(old_inode, 1);
1436 if (new_child_locked)
1437 ocfs2_inode_unlock(new_inode, 1);
1440 /* This was locked for us in ocfs2_prepare_orphan_dir() */
1441 ocfs2_inode_unlock(orphan_dir, 1);
1442 mutex_unlock(&orphan_dir->i_mutex);
1447 sync_mapping_buffers(old_inode->i_mapping);
1452 ocfs2_free_dir_lookup_result(&target_lookup_res);
1453 ocfs2_free_dir_lookup_result(&old_entry_lookup);
1454 ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res);
1455 ocfs2_free_dir_lookup_result(&orphan_insert);
1456 ocfs2_free_dir_lookup_result(&target_insert);
1459 brelse(old_inode_bh);
1469 * we expect i_size = strlen(symname). Copy symname into the file
1470 * data, including the null terminator.
1472 static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
1474 struct inode *inode,
1475 const char *symname)
1477 struct buffer_head **bhs = NULL;
1479 struct super_block *sb = osb->sb;
1480 u64 p_blkno, p_blocks;
1481 int virtual, blocks, status, i, bytes_left;
1483 bytes_left = i_size_read(inode) + 1;
1484 /* we can't trust i_blocks because we're actually going to
1485 * write i_size + 1 bytes. */
1486 blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
1488 mlog_entry("i_blocks = %llu, i_size = %llu, blocks = %d\n",
1489 (unsigned long long)inode->i_blocks,
1490 i_size_read(inode), blocks);
1492 /* Sanity check -- make sure we're going to fit. */
1494 ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) {
1500 bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL);
1507 status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks,
1514 /* links can never be larger than one cluster so we know this
1515 * is all going to be contiguous, but do a sanity check
1517 if ((p_blocks << sb->s_blocksize_bits) < bytes_left) {
1524 while(bytes_left > 0) {
1525 c = &symname[virtual * sb->s_blocksize];
1527 bhs[virtual] = sb_getblk(sb, p_blkno);
1528 if (!bhs[virtual]) {
1533 ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode),
1536 status = ocfs2_journal_access(handle, INODE_CACHE(inode),
1538 OCFS2_JOURNAL_ACCESS_CREATE);
1544 memset(bhs[virtual]->b_data, 0, sb->s_blocksize);
1546 memcpy(bhs[virtual]->b_data, c,
1547 (bytes_left > sb->s_blocksize) ? sb->s_blocksize :
1550 status = ocfs2_journal_dirty(handle, bhs[virtual]);
1558 bytes_left -= sb->s_blocksize;
1565 for(i = 0; i < blocks; i++)
1574 static int ocfs2_symlink(struct inode *dir,
1575 struct dentry *dentry,
1576 const char *symname)
1578 int status, l, credits;
1580 struct ocfs2_super *osb = NULL;
1581 struct inode *inode = NULL;
1582 struct super_block *sb;
1583 struct buffer_head *new_fe_bh = NULL;
1584 struct buffer_head *parent_fe_bh = NULL;
1585 struct ocfs2_dinode *fe = NULL;
1586 struct ocfs2_dinode *dirfe;
1587 handle_t *handle = NULL;
1588 struct ocfs2_alloc_context *inode_ac = NULL;
1589 struct ocfs2_alloc_context *data_ac = NULL;
1590 struct ocfs2_alloc_context *xattr_ac = NULL;
1591 int want_clusters = 0;
1592 int xattr_credits = 0;
1593 struct ocfs2_security_xattr_info si = {
1596 int did_quota = 0, did_quota_inode = 0;
1597 struct ocfs2_dir_lookup_result lookup = { NULL, };
1599 mlog_entry("(0x%p, 0x%p, symname='%s' actual='%.*s')\n", dir,
1600 dentry, symname, dentry->d_name.len, dentry->d_name.name);
1605 l = strlen(symname) + 1;
1607 credits = ocfs2_calc_symlink_credits(sb);
1609 /* lock the parent directory */
1610 status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
1612 if (status != -ENOENT)
1617 dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
1618 if (!ocfs2_read_links_count(dirfe)) {
1619 /* can't make a file in a deleted directory. */
1624 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
1625 dentry->d_name.len);
1629 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
1630 dentry->d_name.name,
1631 dentry->d_name.len, &lookup);
1637 status = ocfs2_reserve_new_inode(osb, &inode_ac);
1639 if (status != -ENOSPC)
1644 inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO);
1651 /* get security xattr */
1652 status = ocfs2_init_security_get(inode, dir, &si);
1654 if (status == -EOPNOTSUPP)
1662 /* calculate meta data/clusters for setting security xattr */
1664 status = ocfs2_calc_security_init(dir, &si, &want_clusters,
1665 &xattr_credits, &xattr_ac);
1672 /* don't reserve bitmap space for fast symlinks. */
1673 if (l > ocfs2_fast_symlink_chars(sb))
1676 status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
1678 if (status != -ENOSPC)
1683 handle = ocfs2_start_trans(osb, credits + xattr_credits);
1684 if (IS_ERR(handle)) {
1685 status = PTR_ERR(handle);
1691 /* We don't use standard VFS wrapper because we don't want vfs_dq_init
1693 if (sb_any_quota_active(osb->sb) &&
1694 osb->sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA) {
1698 did_quota_inode = 1;
1700 mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry,
1701 inode->i_mode, dentry->d_name.len,
1702 dentry->d_name.name);
1704 status = ocfs2_mknod_locked(osb, dir, inode,
1705 0, &new_fe_bh, parent_fe_bh, handle,
1712 fe = (struct ocfs2_dinode *) new_fe_bh->b_data;
1715 if (l > ocfs2_fast_symlink_chars(sb)) {
1718 inode->i_op = &ocfs2_symlink_inode_operations;
1719 if (vfs_dq_alloc_space_nodirty(inode,
1720 ocfs2_clusters_to_bytes(osb->sb, 1))) {
1725 status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0,
1727 handle, data_ac, NULL,
1730 if (status != -ENOSPC && status != -EINTR) {
1732 "Failed to extend file to %llu\n",
1733 (unsigned long long)newsize);
1739 i_size_write(inode, newsize);
1740 inode->i_blocks = ocfs2_inode_sector_count(inode);
1742 inode->i_op = &ocfs2_fast_symlink_inode_operations;
1743 memcpy((char *) fe->id2.i_symlink, symname, l);
1744 i_size_write(inode, newsize);
1745 inode->i_blocks = 0;
1748 status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh);
1754 if (!ocfs2_inode_is_fast_symlink(inode)) {
1755 status = ocfs2_create_symlink_data(osb, handle, inode,
1764 status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
1772 status = ocfs2_add_entry(handle, dentry, inode,
1773 le64_to_cpu(fe->i_blkno), parent_fe_bh,
1780 status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
1786 insert_inode_hash(inode);
1787 dentry->d_op = &ocfs2_dentry_ops;
1788 d_instantiate(dentry, inode);
1790 if (status < 0 && did_quota)
1791 vfs_dq_free_space_nodirty(inode,
1792 ocfs2_clusters_to_bytes(osb->sb, 1));
1793 if (status < 0 && did_quota_inode)
1794 vfs_dq_free_inode(inode);
1796 ocfs2_commit_trans(osb, handle);
1798 ocfs2_inode_unlock(dir, 1);
1801 brelse(parent_fe_bh);
1804 ocfs2_free_dir_lookup_result(&lookup);
1806 ocfs2_free_alloc_context(inode_ac);
1808 ocfs2_free_alloc_context(data_ac);
1810 ocfs2_free_alloc_context(xattr_ac);
1811 if ((status < 0) && inode) {
1821 static int ocfs2_blkno_stringify(u64 blkno, char *name)
1823 int status, namelen;
1827 namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx",
1837 if (namelen != OCFS2_ORPHAN_NAMELEN) {
1843 mlog(0, "built filename '%s' for orphan dir (len=%d)\n", name,
1852 static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
1853 struct inode **ret_orphan_dir,
1856 struct ocfs2_dir_lookup_result *lookup)
1858 struct inode *orphan_dir_inode;
1859 struct buffer_head *orphan_dir_bh = NULL;
1862 status = ocfs2_blkno_stringify(blkno, name);
1868 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
1869 ORPHAN_DIR_SYSTEM_INODE,
1871 if (!orphan_dir_inode) {
1877 mutex_lock(&orphan_dir_inode->i_mutex);
1879 status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
1885 status = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode,
1886 orphan_dir_bh, name,
1887 OCFS2_ORPHAN_NAMELEN, lookup);
1889 ocfs2_inode_unlock(orphan_dir_inode, 1);
1895 *ret_orphan_dir = orphan_dir_inode;
1899 mutex_unlock(&orphan_dir_inode->i_mutex);
1900 iput(orphan_dir_inode);
1903 brelse(orphan_dir_bh);
1909 static int ocfs2_orphan_add(struct ocfs2_super *osb,
1911 struct inode *inode,
1912 struct ocfs2_dinode *fe,
1914 struct ocfs2_dir_lookup_result *lookup,
1915 struct inode *orphan_dir_inode)
1917 struct buffer_head *orphan_dir_bh = NULL;
1919 struct ocfs2_dinode *orphan_fe;
1921 mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino);
1923 status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh);
1929 status = ocfs2_journal_access_di(handle,
1930 INODE_CACHE(orphan_dir_inode),
1932 OCFS2_JOURNAL_ACCESS_WRITE);
1938 /* we're a cluster, and nlink can change on disk from
1939 * underneath us... */
1940 orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
1941 if (S_ISDIR(inode->i_mode))
1942 ocfs2_add_links_count(orphan_fe, 1);
1943 orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe);
1945 status = ocfs2_journal_dirty(handle, orphan_dir_bh);
1951 status = __ocfs2_add_entry(handle, orphan_dir_inode, name,
1952 OCFS2_ORPHAN_NAMELEN, inode,
1953 OCFS2_I(inode)->ip_blkno,
1954 orphan_dir_bh, lookup);
1960 le32_add_cpu(&fe->i_flags, OCFS2_ORPHANED_FL);
1962 /* Record which orphan dir our inode now resides
1963 * in. delete_inode will use this to determine which orphan
1965 fe->i_orphaned_slot = cpu_to_le16(osb->slot_num);
1967 mlog(0, "Inode %llu orphaned in slot %d\n",
1968 (unsigned long long)OCFS2_I(inode)->ip_blkno, osb->slot_num);
1971 brelse(orphan_dir_bh);
1977 /* unlike orphan_add, we expect the orphan dir to already be locked here. */
1978 int ocfs2_orphan_del(struct ocfs2_super *osb,
1980 struct inode *orphan_dir_inode,
1981 struct inode *inode,
1982 struct buffer_head *orphan_dir_bh)
1984 char name[OCFS2_ORPHAN_NAMELEN + 1];
1985 struct ocfs2_dinode *orphan_fe;
1987 struct ocfs2_dir_lookup_result lookup = { NULL, };
1991 status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name);
1997 mlog(0, "removing '%s' from orphan dir %llu (namelen=%d)\n",
1998 name, (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno,
1999 OCFS2_ORPHAN_NAMELEN);
2001 /* find it's spot in the orphan directory */
2002 status = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, orphan_dir_inode,
2009 /* remove it from the orphan directory */
2010 status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup);
2016 status = ocfs2_journal_access_di(handle,
2017 INODE_CACHE(orphan_dir_inode),
2019 OCFS2_JOURNAL_ACCESS_WRITE);
2025 /* do the i_nlink dance! :) */
2026 orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
2027 if (S_ISDIR(inode->i_mode))
2028 ocfs2_add_links_count(orphan_fe, -1);
2029 orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe);
2031 status = ocfs2_journal_dirty(handle, orphan_dir_bh);
2038 ocfs2_free_dir_lookup_result(&lookup);
2044 int ocfs2_create_inode_in_orphan(struct inode *dir,
2046 struct inode **new_inode)
2048 int status, did_quota_inode = 0;
2049 struct inode *inode = NULL;
2050 struct inode *orphan_dir = NULL;
2051 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
2052 struct ocfs2_dinode *di = NULL;
2053 handle_t *handle = NULL;
2054 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
2055 struct buffer_head *parent_di_bh = NULL;
2056 struct buffer_head *new_di_bh = NULL;
2057 struct ocfs2_alloc_context *inode_ac = NULL;
2058 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
2060 status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
2062 if (status != -ENOENT)
2068 * We give the orphan dir the root blkno to fake an orphan name,
2069 * and allocate enough space for our insertion.
2071 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
2073 orphan_name, &orphan_insert);
2079 /* reserve an inode spot */
2080 status = ocfs2_reserve_new_inode(osb, &inode_ac);
2082 if (status != -ENOSPC)
2087 inode = ocfs2_get_init_inode(dir, mode);
2094 handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0));
2095 if (IS_ERR(handle)) {
2096 status = PTR_ERR(handle);
2102 /* We don't use standard VFS wrapper because we don't want vfs_dq_init
2104 if (sb_any_quota_active(osb->sb) &&
2105 osb->sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA) {
2109 did_quota_inode = 1;
2112 /* do the real work now. */
2113 status = ocfs2_mknod_locked(osb, dir, inode,
2114 0, &new_di_bh, parent_di_bh, handle,
2121 status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, orphan_name);
2127 di = (struct ocfs2_dinode *)new_di_bh->b_data;
2128 status = ocfs2_orphan_add(osb, handle, inode, di, orphan_name,
2129 &orphan_insert, orphan_dir);
2135 /* get open lock so that only nodes can't remove it from orphan dir. */
2136 status = ocfs2_open_lock(inode);
2140 insert_inode_hash(inode);
2142 if (status < 0 && did_quota_inode)
2143 vfs_dq_free_inode(inode);
2145 ocfs2_commit_trans(osb, handle);
2148 /* This was locked for us in ocfs2_prepare_orphan_dir() */
2149 ocfs2_inode_unlock(orphan_dir, 1);
2150 mutex_unlock(&orphan_dir->i_mutex);
2154 if (status == -ENOSPC)
2155 mlog(0, "Disk is full\n");
2157 if ((status < 0) && inode) {
2163 ocfs2_free_alloc_context(inode_ac);
2170 ocfs2_free_dir_lookup_result(&orphan_insert);
2172 ocfs2_inode_unlock(dir, 1);
2173 brelse(parent_di_bh);
2177 int ocfs2_mv_orphaned_inode_to_new(struct inode *dir,
2178 struct inode *inode,
2179 struct dentry *dentry)
2182 struct buffer_head *parent_di_bh = NULL;
2183 handle_t *handle = NULL;
2184 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
2185 struct ocfs2_dinode *dir_di, *di;
2186 struct inode *orphan_dir_inode = NULL;
2187 struct buffer_head *orphan_dir_bh = NULL;
2188 struct buffer_head *di_bh = NULL;
2189 struct ocfs2_dir_lookup_result lookup = { NULL, };
2191 mlog_entry("(0x%p, 0x%p, %.*s')\n", dir, dentry,
2192 dentry->d_name.len, dentry->d_name.name);
2194 status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
2196 if (status != -ENOENT)
2201 dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data;
2202 if (!dir_di->i_links_count) {
2203 /* can't make a file in a deleted directory. */
2208 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
2209 dentry->d_name.len);
2213 /* get a spot inside the dir. */
2214 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh,
2215 dentry->d_name.name,
2216 dentry->d_name.len, &lookup);
2222 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
2223 ORPHAN_DIR_SYSTEM_INODE,
2225 if (!orphan_dir_inode) {
2231 mutex_lock(&orphan_dir_inode->i_mutex);
2233 status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
2236 mutex_unlock(&orphan_dir_inode->i_mutex);
2237 iput(orphan_dir_inode);
2241 status = ocfs2_read_inode_block(inode, &di_bh);
2247 handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb));
2248 if (IS_ERR(handle)) {
2249 status = PTR_ERR(handle);
2255 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
2256 di_bh, OCFS2_JOURNAL_ACCESS_WRITE);
2262 status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode,
2269 di = (struct ocfs2_dinode *)di_bh->b_data;
2270 le32_add_cpu(&di->i_flags, -OCFS2_ORPHANED_FL);
2271 di->i_orphaned_slot = 0;
2273 ocfs2_set_links_count(di, inode->i_nlink);
2274 ocfs2_journal_dirty(handle, di_bh);
2276 status = ocfs2_add_entry(handle, dentry, inode,
2277 OCFS2_I(inode)->ip_blkno, parent_di_bh,
2284 status = ocfs2_dentry_attach_lock(dentry, inode,
2285 OCFS2_I(dir)->ip_blkno);
2291 dentry->d_op = &ocfs2_dentry_ops;
2292 d_instantiate(dentry, inode);
2295 ocfs2_commit_trans(osb, handle);
2297 ocfs2_inode_unlock(orphan_dir_inode, 1);
2298 mutex_unlock(&orphan_dir_inode->i_mutex);
2299 iput(orphan_dir_inode);
2302 ocfs2_inode_unlock(dir, 1);
2305 brelse(parent_di_bh);
2306 brelse(orphan_dir_bh);
2308 ocfs2_free_dir_lookup_result(&lookup);
2315 const struct inode_operations ocfs2_dir_iops = {
2316 .create = ocfs2_create,
2317 .lookup = ocfs2_lookup,
2319 .unlink = ocfs2_unlink,
2320 .rmdir = ocfs2_unlink,
2321 .symlink = ocfs2_symlink,
2322 .mkdir = ocfs2_mkdir,
2323 .mknod = ocfs2_mknod,
2324 .rename = ocfs2_rename,
2325 .setattr = ocfs2_setattr,
2326 .getattr = ocfs2_getattr,
2327 .permission = ocfs2_permission,
2328 .setxattr = generic_setxattr,
2329 .getxattr = generic_getxattr,
2330 .listxattr = ocfs2_listxattr,
2331 .removexattr = generic_removexattr,
2332 .fiemap = ocfs2_fiemap,