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 buffer_head *fe_bh,
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;
215 dquot_initialize(inode);
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 dquot_initialize(dir);
249 /* get our super block */
250 osb = OCFS2_SB(dir->i_sb);
252 status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
254 if (status != -ENOENT)
259 if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) {
264 dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
265 if (!ocfs2_read_links_count(dirfe)) {
266 /* can't make a file in a deleted directory. */
271 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
276 /* get a spot inside the dir. */
277 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
279 dentry->d_name.len, &lookup);
285 /* reserve an inode spot */
286 status = ocfs2_reserve_new_inode(osb, &inode_ac);
288 if (status != -ENOSPC)
293 inode = ocfs2_get_init_inode(dir, mode);
300 /* get security xattr */
301 status = ocfs2_init_security_get(inode, dir, &si);
303 if (status == -EOPNOTSUPP)
311 /* calculate meta data/clusters for setting security and acl xattr */
312 status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode,
314 &xattr_credits, &want_meta);
320 /* Reserve a cluster if creating an extent based directory. */
321 if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) {
324 /* Dir indexing requires extra space as well */
325 if (ocfs2_supports_indexed_dirs(osb))
329 status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac);
331 if (status != -ENOSPC)
336 status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
338 if (status != -ENOSPC)
343 handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb,
346 if (IS_ERR(handle)) {
347 status = PTR_ERR(handle);
353 status = dquot_alloc_inode(inode);
358 mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry,
359 inode->i_mode, (unsigned long)dev, dentry->d_name.len,
360 dentry->d_name.name);
362 /* do the real work now. */
363 status = ocfs2_mknod_locked(osb, dir, inode, dev,
364 &new_fe_bh, parent_fe_bh, handle,
372 status = ocfs2_fill_new_dir(osb, handle, dir, inode,
373 new_fe_bh, data_ac, meta_ac);
379 status = ocfs2_journal_access_di(handle, INODE_CACHE(dir),
381 OCFS2_JOURNAL_ACCESS_WRITE);
386 ocfs2_add_links_count(dirfe, 1);
387 status = ocfs2_journal_dirty(handle, parent_fe_bh);
395 status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh,
403 status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
411 status = ocfs2_add_entry(handle, dentry, inode,
412 OCFS2_I(inode)->ip_blkno, parent_fe_bh,
419 status = ocfs2_dentry_attach_lock(dentry, inode,
420 OCFS2_I(dir)->ip_blkno);
426 insert_inode_hash(inode);
427 dentry->d_op = &ocfs2_dentry_ops;
428 d_instantiate(dentry, inode);
431 if (status < 0 && did_quota_inode)
432 dquot_free_inode(inode);
434 ocfs2_commit_trans(osb, handle);
436 ocfs2_inode_unlock(dir, 1);
438 if (status == -ENOSPC)
439 mlog(0, "Disk is full\n");
442 brelse(parent_fe_bh);
446 ocfs2_free_dir_lookup_result(&lookup);
449 ocfs2_free_alloc_context(inode_ac);
452 ocfs2_free_alloc_context(data_ac);
455 ocfs2_free_alloc_context(meta_ac);
458 * We should call iput after the i_mutex of the bitmap been
459 * unlocked in ocfs2_free_alloc_context, or the
460 * ocfs2_delete_inode will mutex_lock again.
462 if ((status < 0) && inode) {
463 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR;
473 static int ocfs2_mknod_locked(struct ocfs2_super *osb,
477 struct buffer_head **new_fe_bh,
478 struct buffer_head *parent_fe_bh,
480 struct ocfs2_alloc_context *inode_ac)
483 struct ocfs2_dinode *fe = NULL;
484 struct ocfs2_extent_list *fel;
491 status = ocfs2_claim_new_inode(osb, handle, dir, parent_fe_bh,
492 inode_ac, &suballoc_bit, &fe_blkno);
498 /* populate as many fields early on as possible - many of
499 * these are used by the support functions here and in
501 inode->i_ino = ino_from_blkno(osb->sb, fe_blkno);
502 OCFS2_I(inode)->ip_blkno = fe_blkno;
503 spin_lock(&osb->osb_lock);
504 inode->i_generation = osb->s_next_generation++;
505 spin_unlock(&osb->osb_lock);
507 *new_fe_bh = sb_getblk(osb->sb, fe_blkno);
513 ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh);
515 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
517 OCFS2_JOURNAL_ACCESS_CREATE);
523 fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data;
524 memset(fe, 0, osb->sb->s_blocksize);
526 fe->i_generation = cpu_to_le32(inode->i_generation);
527 fe->i_fs_generation = cpu_to_le32(osb->fs_generation);
528 fe->i_blkno = cpu_to_le64(fe_blkno);
529 fe->i_suballoc_bit = cpu_to_le16(suballoc_bit);
530 fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot);
531 fe->i_uid = cpu_to_le32(inode->i_uid);
532 fe->i_gid = cpu_to_le32(inode->i_gid);
533 fe->i_mode = cpu_to_le16(inode->i_mode);
534 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
535 fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev));
537 ocfs2_set_links_count(fe, inode->i_nlink);
539 fe->i_last_eb_blk = 0;
540 strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE);
541 le32_add_cpu(&fe->i_flags, OCFS2_VALID_FL);
542 fe->i_atime = fe->i_ctime = fe->i_mtime =
543 cpu_to_le64(CURRENT_TIME.tv_sec);
544 fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec =
545 cpu_to_le32(CURRENT_TIME.tv_nsec);
549 * If supported, directories start with inline data. If inline
550 * isn't supported, but indexing is, we start them as indexed.
552 feat = le16_to_cpu(fe->i_dyn_features);
553 if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) {
554 fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL);
556 fe->id2.i_data.id_count = cpu_to_le16(
557 ocfs2_max_inline_data_with_xattr(osb->sb, fe));
559 fel = &fe->id2.i_list;
560 fel->l_tree_depth = 0;
561 fel->l_next_free_rec = 0;
562 fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb));
565 status = ocfs2_journal_dirty(handle, *new_fe_bh);
571 ocfs2_populate_inode(inode, fe, 1);
572 ocfs2_ci_set_new(osb, INODE_CACHE(inode));
573 if (!ocfs2_mount_local(osb)) {
574 status = ocfs2_create_new_inode_locks(inode);
579 status = 0; /* error in ocfs2_create_new_inode_locks is not
594 static int ocfs2_mkdir(struct inode *dir,
595 struct dentry *dentry,
600 mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode,
601 dentry->d_name.len, dentry->d_name.name);
602 ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0);
608 static int ocfs2_create(struct inode *dir,
609 struct dentry *dentry,
611 struct nameidata *nd)
615 mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode,
616 dentry->d_name.len, dentry->d_name.name);
617 ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0);
623 static int ocfs2_link(struct dentry *old_dentry,
625 struct dentry *dentry)
628 struct inode *inode = old_dentry->d_inode;
630 struct buffer_head *fe_bh = NULL;
631 struct buffer_head *parent_fe_bh = NULL;
632 struct ocfs2_dinode *fe = NULL;
633 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
634 struct ocfs2_dir_lookup_result lookup = { NULL, };
636 mlog_entry("(inode=%lu, old='%.*s' new='%.*s')\n", inode->i_ino,
637 old_dentry->d_name.len, old_dentry->d_name.name,
638 dentry->d_name.len, dentry->d_name.name);
640 if (S_ISDIR(inode->i_mode))
643 dquot_initialize(dir);
645 err = ocfs2_inode_lock_nested(dir, &parent_fe_bh, 1, OI_LS_PARENT);
657 err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
662 err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
664 dentry->d_name.len, &lookup);
670 err = ocfs2_inode_lock(inode, &fe_bh, 1);
677 fe = (struct ocfs2_dinode *) fe_bh->b_data;
678 if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) {
680 goto out_unlock_inode;
683 handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb));
684 if (IS_ERR(handle)) {
685 err = PTR_ERR(handle);
688 goto out_unlock_inode;
691 err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh,
692 OCFS2_JOURNAL_ACCESS_WRITE);
699 inode->i_ctime = CURRENT_TIME;
700 ocfs2_set_links_count(fe, inode->i_nlink);
701 fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
702 fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
704 err = ocfs2_journal_dirty(handle, fe_bh);
706 ocfs2_add_links_count(fe, -1);
712 err = ocfs2_add_entry(handle, dentry, inode,
713 OCFS2_I(inode)->ip_blkno,
714 parent_fe_bh, &lookup);
716 ocfs2_add_links_count(fe, -1);
722 err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
728 atomic_inc(&inode->i_count);
729 dentry->d_op = &ocfs2_dentry_ops;
730 d_instantiate(dentry, inode);
733 ocfs2_commit_trans(osb, handle);
735 ocfs2_inode_unlock(inode, 1);
738 ocfs2_inode_unlock(dir, 1);
741 brelse(parent_fe_bh);
743 ocfs2_free_dir_lookup_result(&lookup);
751 * Takes and drops an exclusive lock on the given dentry. This will
752 * force other nodes to drop it.
754 static int ocfs2_remote_dentry_delete(struct dentry *dentry)
758 ret = ocfs2_dentry_lock(dentry, 1);
762 ocfs2_dentry_unlock(dentry, 1);
767 static inline int inode_is_unlinkable(struct inode *inode)
769 if (S_ISDIR(inode->i_mode)) {
770 if (inode->i_nlink == 2)
775 if (inode->i_nlink == 1)
780 static int ocfs2_unlink(struct inode *dir,
781 struct dentry *dentry)
784 int child_locked = 0;
785 struct inode *inode = dentry->d_inode;
786 struct inode *orphan_dir = NULL;
787 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
789 struct ocfs2_dinode *fe = NULL;
790 struct buffer_head *fe_bh = NULL;
791 struct buffer_head *parent_node_bh = NULL;
792 handle_t *handle = NULL;
793 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
794 struct ocfs2_dir_lookup_result lookup = { NULL, };
795 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
797 mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry,
798 dentry->d_name.len, dentry->d_name.name);
800 dquot_initialize(dir);
802 BUG_ON(dentry->d_parent->d_inode != dir);
804 mlog(0, "ino = %llu\n", (unsigned long long)OCFS2_I(inode)->ip_blkno);
806 if (inode == osb->root_inode) {
807 mlog(0, "Cannot delete the root directory\n");
811 status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1,
814 if (status != -ENOENT)
819 status = ocfs2_find_files_on_disk(dentry->d_name.name,
820 dentry->d_name.len, &blkno, dir,
823 if (status != -ENOENT)
828 if (OCFS2_I(inode)->ip_blkno != blkno) {
831 mlog(0, "ip_blkno %llu != dirent blkno %llu ip_flags = %x\n",
832 (unsigned long long)OCFS2_I(inode)->ip_blkno,
833 (unsigned long long)blkno, OCFS2_I(inode)->ip_flags);
837 status = ocfs2_inode_lock(inode, &fe_bh, 1);
839 if (status != -ENOENT)
845 if (S_ISDIR(inode->i_mode)) {
846 if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) {
852 status = ocfs2_remote_dentry_delete(dentry);
854 /* This remote delete should succeed under all normal
860 if (inode_is_unlinkable(inode)) {
861 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
862 OCFS2_I(inode)->ip_blkno,
863 orphan_name, &orphan_insert);
870 handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb));
871 if (IS_ERR(handle)) {
872 status = PTR_ERR(handle);
878 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh,
879 OCFS2_JOURNAL_ACCESS_WRITE);
885 fe = (struct ocfs2_dinode *) fe_bh->b_data;
887 if (inode_is_unlinkable(inode)) {
888 status = ocfs2_orphan_add(osb, handle, inode, fe_bh, orphan_name,
889 &orphan_insert, orphan_dir);
896 /* delete the name from the parent dir */
897 status = ocfs2_delete_entry(handle, dir, &lookup);
903 if (S_ISDIR(inode->i_mode))
906 ocfs2_set_links_count(fe, inode->i_nlink);
908 status = ocfs2_journal_dirty(handle, fe_bh);
914 dir->i_ctime = dir->i_mtime = CURRENT_TIME;
915 if (S_ISDIR(inode->i_mode))
918 status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh);
921 if (S_ISDIR(inode->i_mode))
927 ocfs2_commit_trans(osb, handle);
930 ocfs2_inode_unlock(inode, 1);
932 ocfs2_inode_unlock(dir, 1);
935 /* This was locked for us in ocfs2_prepare_orphan_dir() */
936 ocfs2_inode_unlock(orphan_dir, 1);
937 mutex_unlock(&orphan_dir->i_mutex);
942 brelse(parent_node_bh);
944 ocfs2_free_dir_lookup_result(&orphan_insert);
945 ocfs2_free_dir_lookup_result(&lookup);
953 * The only place this should be used is rename!
954 * if they have the same id, then the 1st one is the only one locked.
956 static int ocfs2_double_lock(struct ocfs2_super *osb,
957 struct buffer_head **bh1,
958 struct inode *inode1,
959 struct buffer_head **bh2,
960 struct inode *inode2)
963 struct ocfs2_inode_info *oi1 = OCFS2_I(inode1);
964 struct ocfs2_inode_info *oi2 = OCFS2_I(inode2);
965 struct buffer_head **tmpbh;
966 struct inode *tmpinode;
968 mlog_entry("(inode1 = %llu, inode2 = %llu)\n",
969 (unsigned long long)oi1->ip_blkno,
970 (unsigned long long)oi2->ip_blkno);
977 /* we always want to lock the one with the lower lockid first. */
978 if (oi1->ip_blkno != oi2->ip_blkno) {
979 if (oi1->ip_blkno < oi2->ip_blkno) {
980 /* switch id1 and id2 around */
981 mlog(0, "switching them around...\n");
991 status = ocfs2_inode_lock_nested(inode2, bh2, 1,
994 if (status != -ENOENT)
1001 status = ocfs2_inode_lock_nested(inode1, bh1, 1, OI_LS_RENAME2);
1004 * An error return must mean that no cluster locks
1005 * were held on function exit.
1007 if (oi1->ip_blkno != oi2->ip_blkno)
1008 ocfs2_inode_unlock(inode2, 1);
1010 if (status != -ENOENT)
1019 static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2)
1021 ocfs2_inode_unlock(inode1, 1);
1023 if (inode1 != inode2)
1024 ocfs2_inode_unlock(inode2, 1);
1027 static int ocfs2_rename(struct inode *old_dir,
1028 struct dentry *old_dentry,
1029 struct inode *new_dir,
1030 struct dentry *new_dentry)
1032 int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0;
1033 int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0;
1034 struct inode *old_inode = old_dentry->d_inode;
1035 struct inode *new_inode = new_dentry->d_inode;
1036 struct inode *orphan_dir = NULL;
1037 struct ocfs2_dinode *newfe = NULL;
1038 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
1039 struct buffer_head *newfe_bh = NULL;
1040 struct buffer_head *old_inode_bh = NULL;
1041 struct ocfs2_super *osb = NULL;
1042 u64 newfe_blkno, old_de_ino;
1043 handle_t *handle = NULL;
1044 struct buffer_head *old_dir_bh = NULL;
1045 struct buffer_head *new_dir_bh = NULL;
1046 nlink_t old_dir_nlink = old_dir->i_nlink;
1047 struct ocfs2_dinode *old_di;
1048 struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, };
1049 struct ocfs2_dir_lookup_result target_lookup_res = { NULL, };
1050 struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, };
1051 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
1052 struct ocfs2_dir_lookup_result target_insert = { NULL, };
1054 /* At some point it might be nice to break this function up a
1057 mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p, from='%.*s' to='%.*s')\n",
1058 old_dir, old_dentry, new_dir, new_dentry,
1059 old_dentry->d_name.len, old_dentry->d_name.name,
1060 new_dentry->d_name.len, new_dentry->d_name.name);
1062 dquot_initialize(old_dir);
1063 dquot_initialize(new_dir);
1065 osb = OCFS2_SB(old_dir->i_sb);
1068 if (!igrab(new_inode))
1072 /* Assume a directory hierarchy thusly:
1075 * a,b,c, and d are all directories.
1077 * from cwd of 'a' on both nodes:
1081 * And that's why, just like the VFS, we need a file system
1083 if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) {
1084 status = ocfs2_rename_lock(osb);
1092 /* if old and new are the same, this'll just do one lock. */
1093 status = ocfs2_double_lock(osb, &old_dir_bh, old_dir,
1094 &new_dir_bh, new_dir);
1101 /* make sure both dirs have bhs
1102 * get an extra ref on old_dir_bh if old==new */
1105 new_dir_bh = old_dir_bh;
1108 mlog(ML_ERROR, "no old_dir_bh!\n");
1115 * Aside from allowing a meta data update, the locking here
1116 * also ensures that the downconvert thread on other nodes
1117 * won't have to concurrently downconvert the inode and the
1120 status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1,
1123 if (status != -ENOENT)
1127 old_child_locked = 1;
1129 status = ocfs2_remote_dentry_delete(old_dentry);
1135 if (S_ISDIR(old_inode->i_mode)) {
1136 u64 old_inode_parent;
1139 status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent,
1141 &old_inode_dot_dot_res);
1147 if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) {
1152 if (!new_inode && new_dir != old_dir &&
1153 new_dir->i_nlink >= ocfs2_link_max(osb)) {
1159 status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name,
1160 old_dentry->d_name.len,
1168 * Check for inode number is _not_ due to possible IO errors.
1169 * We might rmdir the source, keep it as pwd of some process
1170 * and merrily kill the link to whatever was created under the
1171 * same name. Goodbye sticky bit ;-<
1173 if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) {
1178 /* check if the target already exists (in which case we need
1180 status = ocfs2_find_files_on_disk(new_dentry->d_name.name,
1181 new_dentry->d_name.len,
1182 &newfe_blkno, new_dir,
1183 &target_lookup_res);
1184 /* The only error we allow here is -ENOENT because the new
1185 * file not existing is perfectly valid. */
1186 if ((status < 0) && (status != -ENOENT)) {
1187 /* If we cannot find the file specified we should just */
1188 /* return the error... */
1195 if (!target_exists && new_inode) {
1197 * Target was unlinked by another node while we were
1198 * waiting to get to ocfs2_rename(). There isn't
1199 * anything we can do here to help the situation, so
1200 * bubble up the appropriate error.
1206 /* In case we need to overwrite an existing file, we blow it
1208 if (target_exists) {
1209 /* VFS didn't think there existed an inode here, but
1210 * someone else in the cluster must have raced our
1211 * rename to create one. Today we error cleanly, in
1212 * the future we should consider calling iget to build
1213 * a new struct inode for this entry. */
1217 mlog(0, "We found an inode for name %.*s but VFS "
1218 "didn't give us one.\n", new_dentry->d_name.len,
1219 new_dentry->d_name.name);
1223 if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) {
1226 mlog(0, "Inode %llu and dir %llu disagree. flags = %x\n",
1227 (unsigned long long)OCFS2_I(new_inode)->ip_blkno,
1228 (unsigned long long)newfe_blkno,
1229 OCFS2_I(new_inode)->ip_flags);
1233 status = ocfs2_inode_lock(new_inode, &newfe_bh, 1);
1235 if (status != -ENOENT)
1239 new_child_locked = 1;
1241 status = ocfs2_remote_dentry_delete(new_dentry);
1247 newfe = (struct ocfs2_dinode *) newfe_bh->b_data;
1249 mlog(0, "aha rename over existing... new_blkno=%llu "
1250 "newfebh=%p bhblocknr=%llu\n",
1251 (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ?
1252 (unsigned long long)newfe_bh->b_blocknr : 0ULL);
1254 if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) {
1255 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
1256 OCFS2_I(new_inode)->ip_blkno,
1257 orphan_name, &orphan_insert);
1264 BUG_ON(new_dentry->d_parent->d_inode != new_dir);
1266 status = ocfs2_check_dir_for_entry(new_dir,
1267 new_dentry->d_name.name,
1268 new_dentry->d_name.len);
1272 status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh,
1273 new_dentry->d_name.name,
1274 new_dentry->d_name.len,
1282 handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb));
1283 if (IS_ERR(handle)) {
1284 status = PTR_ERR(handle);
1290 if (target_exists) {
1291 if (S_ISDIR(new_inode->i_mode)) {
1292 if (new_inode->i_nlink != 2 ||
1293 !ocfs2_empty_dir(new_inode)) {
1294 status = -ENOTEMPTY;
1298 status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode),
1300 OCFS2_JOURNAL_ACCESS_WRITE);
1306 if (S_ISDIR(new_inode->i_mode) ||
1307 (ocfs2_read_links_count(newfe) == 1)) {
1308 status = ocfs2_orphan_add(osb, handle, new_inode,
1309 newfe_bh, orphan_name,
1310 &orphan_insert, orphan_dir);
1317 /* change the dirent to point to the correct inode */
1318 status = ocfs2_update_entry(new_dir, handle, &target_lookup_res,
1324 new_dir->i_version++;
1326 if (S_ISDIR(new_inode->i_mode))
1327 ocfs2_set_links_count(newfe, 0);
1329 ocfs2_add_links_count(newfe, -1);
1331 status = ocfs2_journal_dirty(handle, newfe_bh);
1337 /* if the name was not found in new_dir, add it now */
1338 status = ocfs2_add_entry(handle, new_dentry, old_inode,
1339 OCFS2_I(old_inode)->ip_blkno,
1340 new_dir_bh, &target_insert);
1343 old_inode->i_ctime = CURRENT_TIME;
1344 mark_inode_dirty(old_inode);
1346 status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode),
1348 OCFS2_JOURNAL_ACCESS_WRITE);
1350 old_di = (struct ocfs2_dinode *) old_inode_bh->b_data;
1352 old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec);
1353 old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec);
1355 status = ocfs2_journal_dirty(handle, old_inode_bh);
1362 * Now that the name has been added to new_dir, remove the old name.
1364 * We don't keep any directory entry context around until now
1365 * because the insert might have changed the type of directory
1366 * we're dealing with.
1368 status = ocfs2_find_entry(old_dentry->d_name.name,
1369 old_dentry->d_name.len, old_dir,
1374 status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup);
1381 new_inode->i_nlink--;
1382 new_inode->i_ctime = CURRENT_TIME;
1384 old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME;
1386 if (update_dot_dot) {
1387 status = ocfs2_update_entry(old_inode, handle,
1388 &old_inode_dot_dot_res, new_dir);
1391 new_inode->i_nlink--;
1394 mark_inode_dirty(new_dir);
1397 mark_inode_dirty(old_dir);
1398 ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh);
1400 mark_inode_dirty(new_inode);
1401 ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh);
1404 if (old_dir != new_dir) {
1405 /* Keep the same times on both directories.*/
1406 new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime;
1409 * This will also pick up the i_nlink change from the
1412 ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh);
1415 if (old_dir_nlink != old_dir->i_nlink) {
1417 mlog(ML_ERROR, "need to change nlink for old dir "
1418 "%llu from %d to %d but bh is NULL!\n",
1419 (unsigned long long)OCFS2_I(old_dir)->ip_blkno,
1420 (int)old_dir_nlink, old_dir->i_nlink);
1422 struct ocfs2_dinode *fe;
1423 status = ocfs2_journal_access_di(handle,
1424 INODE_CACHE(old_dir),
1426 OCFS2_JOURNAL_ACCESS_WRITE);
1427 fe = (struct ocfs2_dinode *) old_dir_bh->b_data;
1428 ocfs2_set_links_count(fe, old_dir->i_nlink);
1429 status = ocfs2_journal_dirty(handle, old_dir_bh);
1432 ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir);
1436 ocfs2_rename_unlock(osb);
1439 ocfs2_commit_trans(osb, handle);
1442 ocfs2_double_unlock(old_dir, new_dir);
1444 if (old_child_locked)
1445 ocfs2_inode_unlock(old_inode, 1);
1447 if (new_child_locked)
1448 ocfs2_inode_unlock(new_inode, 1);
1451 /* This was locked for us in ocfs2_prepare_orphan_dir() */
1452 ocfs2_inode_unlock(orphan_dir, 1);
1453 mutex_unlock(&orphan_dir->i_mutex);
1458 sync_mapping_buffers(old_inode->i_mapping);
1463 ocfs2_free_dir_lookup_result(&target_lookup_res);
1464 ocfs2_free_dir_lookup_result(&old_entry_lookup);
1465 ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res);
1466 ocfs2_free_dir_lookup_result(&orphan_insert);
1467 ocfs2_free_dir_lookup_result(&target_insert);
1470 brelse(old_inode_bh);
1480 * we expect i_size = strlen(symname). Copy symname into the file
1481 * data, including the null terminator.
1483 static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
1485 struct inode *inode,
1486 const char *symname)
1488 struct buffer_head **bhs = NULL;
1490 struct super_block *sb = osb->sb;
1491 u64 p_blkno, p_blocks;
1492 int virtual, blocks, status, i, bytes_left;
1494 bytes_left = i_size_read(inode) + 1;
1495 /* we can't trust i_blocks because we're actually going to
1496 * write i_size + 1 bytes. */
1497 blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
1499 mlog_entry("i_blocks = %llu, i_size = %llu, blocks = %d\n",
1500 (unsigned long long)inode->i_blocks,
1501 i_size_read(inode), blocks);
1503 /* Sanity check -- make sure we're going to fit. */
1505 ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) {
1511 bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL);
1518 status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks,
1525 /* links can never be larger than one cluster so we know this
1526 * is all going to be contiguous, but do a sanity check
1528 if ((p_blocks << sb->s_blocksize_bits) < bytes_left) {
1535 while(bytes_left > 0) {
1536 c = &symname[virtual * sb->s_blocksize];
1538 bhs[virtual] = sb_getblk(sb, p_blkno);
1539 if (!bhs[virtual]) {
1544 ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode),
1547 status = ocfs2_journal_access(handle, INODE_CACHE(inode),
1549 OCFS2_JOURNAL_ACCESS_CREATE);
1555 memset(bhs[virtual]->b_data, 0, sb->s_blocksize);
1557 memcpy(bhs[virtual]->b_data, c,
1558 (bytes_left > sb->s_blocksize) ? sb->s_blocksize :
1561 status = ocfs2_journal_dirty(handle, bhs[virtual]);
1569 bytes_left -= sb->s_blocksize;
1576 for(i = 0; i < blocks; i++)
1585 static int ocfs2_symlink(struct inode *dir,
1586 struct dentry *dentry,
1587 const char *symname)
1589 int status, l, credits;
1591 struct ocfs2_super *osb = NULL;
1592 struct inode *inode = NULL;
1593 struct super_block *sb;
1594 struct buffer_head *new_fe_bh = NULL;
1595 struct buffer_head *parent_fe_bh = NULL;
1596 struct ocfs2_dinode *fe = NULL;
1597 struct ocfs2_dinode *dirfe;
1598 handle_t *handle = NULL;
1599 struct ocfs2_alloc_context *inode_ac = NULL;
1600 struct ocfs2_alloc_context *data_ac = NULL;
1601 struct ocfs2_alloc_context *xattr_ac = NULL;
1602 int want_clusters = 0;
1603 int xattr_credits = 0;
1604 struct ocfs2_security_xattr_info si = {
1607 int did_quota = 0, did_quota_inode = 0;
1608 struct ocfs2_dir_lookup_result lookup = { NULL, };
1610 mlog_entry("(0x%p, 0x%p, symname='%s' actual='%.*s')\n", dir,
1611 dentry, symname, dentry->d_name.len, dentry->d_name.name);
1613 dquot_initialize(dir);
1618 l = strlen(symname) + 1;
1620 credits = ocfs2_calc_symlink_credits(sb);
1622 /* lock the parent directory */
1623 status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
1625 if (status != -ENOENT)
1630 dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
1631 if (!ocfs2_read_links_count(dirfe)) {
1632 /* can't make a file in a deleted directory. */
1637 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
1638 dentry->d_name.len);
1642 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
1643 dentry->d_name.name,
1644 dentry->d_name.len, &lookup);
1650 status = ocfs2_reserve_new_inode(osb, &inode_ac);
1652 if (status != -ENOSPC)
1657 inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO);
1664 /* get security xattr */
1665 status = ocfs2_init_security_get(inode, dir, &si);
1667 if (status == -EOPNOTSUPP)
1675 /* calculate meta data/clusters for setting security xattr */
1677 status = ocfs2_calc_security_init(dir, &si, &want_clusters,
1678 &xattr_credits, &xattr_ac);
1685 /* don't reserve bitmap space for fast symlinks. */
1686 if (l > ocfs2_fast_symlink_chars(sb))
1689 status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
1691 if (status != -ENOSPC)
1696 handle = ocfs2_start_trans(osb, credits + xattr_credits);
1697 if (IS_ERR(handle)) {
1698 status = PTR_ERR(handle);
1704 status = dquot_alloc_inode(inode);
1707 did_quota_inode = 1;
1709 mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry,
1710 inode->i_mode, dentry->d_name.len,
1711 dentry->d_name.name);
1713 status = ocfs2_mknod_locked(osb, dir, inode,
1714 0, &new_fe_bh, parent_fe_bh, handle,
1721 fe = (struct ocfs2_dinode *) new_fe_bh->b_data;
1724 if (l > ocfs2_fast_symlink_chars(sb)) {
1727 inode->i_op = &ocfs2_symlink_inode_operations;
1728 status = dquot_alloc_space_nodirty(inode,
1729 ocfs2_clusters_to_bytes(osb->sb, 1));
1733 status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0,
1735 handle, data_ac, NULL,
1738 if (status != -ENOSPC && status != -EINTR) {
1740 "Failed to extend file to %llu\n",
1741 (unsigned long long)newsize);
1747 i_size_write(inode, newsize);
1748 inode->i_blocks = ocfs2_inode_sector_count(inode);
1750 inode->i_op = &ocfs2_fast_symlink_inode_operations;
1751 memcpy((char *) fe->id2.i_symlink, symname, l);
1752 i_size_write(inode, newsize);
1753 inode->i_blocks = 0;
1756 status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh);
1762 if (!ocfs2_inode_is_fast_symlink(inode)) {
1763 status = ocfs2_create_symlink_data(osb, handle, inode,
1772 status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
1780 status = ocfs2_add_entry(handle, dentry, inode,
1781 le64_to_cpu(fe->i_blkno), parent_fe_bh,
1788 status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
1794 insert_inode_hash(inode);
1795 dentry->d_op = &ocfs2_dentry_ops;
1796 d_instantiate(dentry, inode);
1798 if (status < 0 && did_quota)
1799 dquot_free_space_nodirty(inode,
1800 ocfs2_clusters_to_bytes(osb->sb, 1));
1801 if (status < 0 && did_quota_inode)
1802 dquot_free_inode(inode);
1804 ocfs2_commit_trans(osb, handle);
1806 ocfs2_inode_unlock(dir, 1);
1809 brelse(parent_fe_bh);
1812 ocfs2_free_dir_lookup_result(&lookup);
1814 ocfs2_free_alloc_context(inode_ac);
1816 ocfs2_free_alloc_context(data_ac);
1818 ocfs2_free_alloc_context(xattr_ac);
1819 if ((status < 0) && inode) {
1820 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR;
1830 static int ocfs2_blkno_stringify(u64 blkno, char *name)
1832 int status, namelen;
1836 namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx",
1846 if (namelen != OCFS2_ORPHAN_NAMELEN) {
1852 mlog(0, "built filename '%s' for orphan dir (len=%d)\n", name,
1861 static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
1862 struct inode **ret_orphan_dir,
1865 struct ocfs2_dir_lookup_result *lookup)
1867 struct inode *orphan_dir_inode;
1868 struct buffer_head *orphan_dir_bh = NULL;
1871 status = ocfs2_blkno_stringify(blkno, name);
1877 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
1878 ORPHAN_DIR_SYSTEM_INODE,
1880 if (!orphan_dir_inode) {
1886 mutex_lock(&orphan_dir_inode->i_mutex);
1888 status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
1894 status = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode,
1895 orphan_dir_bh, name,
1896 OCFS2_ORPHAN_NAMELEN, lookup);
1898 ocfs2_inode_unlock(orphan_dir_inode, 1);
1904 *ret_orphan_dir = orphan_dir_inode;
1908 mutex_unlock(&orphan_dir_inode->i_mutex);
1909 iput(orphan_dir_inode);
1912 brelse(orphan_dir_bh);
1918 static int ocfs2_orphan_add(struct ocfs2_super *osb,
1920 struct inode *inode,
1921 struct buffer_head *fe_bh,
1923 struct ocfs2_dir_lookup_result *lookup,
1924 struct inode *orphan_dir_inode)
1926 struct buffer_head *orphan_dir_bh = NULL;
1928 struct ocfs2_dinode *orphan_fe;
1929 struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data;
1931 mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino);
1933 status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh);
1939 status = ocfs2_journal_access_di(handle,
1940 INODE_CACHE(orphan_dir_inode),
1942 OCFS2_JOURNAL_ACCESS_WRITE);
1948 /* we're a cluster, and nlink can change on disk from
1949 * underneath us... */
1950 orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
1951 if (S_ISDIR(inode->i_mode))
1952 ocfs2_add_links_count(orphan_fe, 1);
1953 orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe);
1955 status = ocfs2_journal_dirty(handle, orphan_dir_bh);
1961 status = __ocfs2_add_entry(handle, orphan_dir_inode, name,
1962 OCFS2_ORPHAN_NAMELEN, inode,
1963 OCFS2_I(inode)->ip_blkno,
1964 orphan_dir_bh, lookup);
1971 * We're going to journal the change of i_flags and i_orphaned_slot.
1972 * It's safe anyway, though some callers may duplicate the journaling.
1973 * Journaling within the func just make the logic look more
1976 status = ocfs2_journal_access_di(handle,
1979 OCFS2_JOURNAL_ACCESS_WRITE);
1985 le32_add_cpu(&fe->i_flags, OCFS2_ORPHANED_FL);
1986 OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR;
1988 /* Record which orphan dir our inode now resides
1989 * in. delete_inode will use this to determine which orphan
1991 fe->i_orphaned_slot = cpu_to_le16(osb->slot_num);
1993 ocfs2_journal_dirty(handle, fe_bh);
1995 mlog(0, "Inode %llu orphaned in slot %d\n",
1996 (unsigned long long)OCFS2_I(inode)->ip_blkno, osb->slot_num);
1999 brelse(orphan_dir_bh);
2005 /* unlike orphan_add, we expect the orphan dir to already be locked here. */
2006 int ocfs2_orphan_del(struct ocfs2_super *osb,
2008 struct inode *orphan_dir_inode,
2009 struct inode *inode,
2010 struct buffer_head *orphan_dir_bh)
2012 char name[OCFS2_ORPHAN_NAMELEN + 1];
2013 struct ocfs2_dinode *orphan_fe;
2015 struct ocfs2_dir_lookup_result lookup = { NULL, };
2019 status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name);
2025 mlog(0, "removing '%s' from orphan dir %llu (namelen=%d)\n",
2026 name, (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno,
2027 OCFS2_ORPHAN_NAMELEN);
2029 /* find it's spot in the orphan directory */
2030 status = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, orphan_dir_inode,
2037 /* remove it from the orphan directory */
2038 status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup);
2044 status = ocfs2_journal_access_di(handle,
2045 INODE_CACHE(orphan_dir_inode),
2047 OCFS2_JOURNAL_ACCESS_WRITE);
2053 /* do the i_nlink dance! :) */
2054 orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
2055 if (S_ISDIR(inode->i_mode))
2056 ocfs2_add_links_count(orphan_fe, -1);
2057 orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe);
2059 status = ocfs2_journal_dirty(handle, orphan_dir_bh);
2066 ocfs2_free_dir_lookup_result(&lookup);
2072 int ocfs2_create_inode_in_orphan(struct inode *dir,
2074 struct inode **new_inode)
2076 int status, did_quota_inode = 0;
2077 struct inode *inode = NULL;
2078 struct inode *orphan_dir = NULL;
2079 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
2080 struct ocfs2_dinode *di = NULL;
2081 handle_t *handle = NULL;
2082 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
2083 struct buffer_head *parent_di_bh = NULL;
2084 struct buffer_head *new_di_bh = NULL;
2085 struct ocfs2_alloc_context *inode_ac = NULL;
2086 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
2088 status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
2090 if (status != -ENOENT)
2096 * We give the orphan dir the root blkno to fake an orphan name,
2097 * and allocate enough space for our insertion.
2099 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
2101 orphan_name, &orphan_insert);
2107 /* reserve an inode spot */
2108 status = ocfs2_reserve_new_inode(osb, &inode_ac);
2110 if (status != -ENOSPC)
2115 inode = ocfs2_get_init_inode(dir, mode);
2122 handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0));
2123 if (IS_ERR(handle)) {
2124 status = PTR_ERR(handle);
2130 status = dquot_alloc_inode(inode);
2133 did_quota_inode = 1;
2136 /* do the real work now. */
2137 status = ocfs2_mknod_locked(osb, dir, inode,
2138 0, &new_di_bh, parent_di_bh, handle,
2145 status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, orphan_name);
2151 di = (struct ocfs2_dinode *)new_di_bh->b_data;
2152 status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name,
2153 &orphan_insert, orphan_dir);
2159 /* get open lock so that only nodes can't remove it from orphan dir. */
2160 status = ocfs2_open_lock(inode);
2164 insert_inode_hash(inode);
2166 if (status < 0 && did_quota_inode)
2167 dquot_free_inode(inode);
2169 ocfs2_commit_trans(osb, handle);
2172 /* This was locked for us in ocfs2_prepare_orphan_dir() */
2173 ocfs2_inode_unlock(orphan_dir, 1);
2174 mutex_unlock(&orphan_dir->i_mutex);
2178 if (status == -ENOSPC)
2179 mlog(0, "Disk is full\n");
2181 if ((status < 0) && inode) {
2187 ocfs2_free_alloc_context(inode_ac);
2194 ocfs2_free_dir_lookup_result(&orphan_insert);
2196 ocfs2_inode_unlock(dir, 1);
2197 brelse(parent_di_bh);
2201 int ocfs2_mv_orphaned_inode_to_new(struct inode *dir,
2202 struct inode *inode,
2203 struct dentry *dentry)
2206 struct buffer_head *parent_di_bh = NULL;
2207 handle_t *handle = NULL;
2208 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
2209 struct ocfs2_dinode *dir_di, *di;
2210 struct inode *orphan_dir_inode = NULL;
2211 struct buffer_head *orphan_dir_bh = NULL;
2212 struct buffer_head *di_bh = NULL;
2213 struct ocfs2_dir_lookup_result lookup = { NULL, };
2215 mlog_entry("(0x%p, 0x%p, %.*s')\n", dir, dentry,
2216 dentry->d_name.len, dentry->d_name.name);
2218 status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
2220 if (status != -ENOENT)
2225 dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data;
2226 if (!dir_di->i_links_count) {
2227 /* can't make a file in a deleted directory. */
2232 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
2233 dentry->d_name.len);
2237 /* get a spot inside the dir. */
2238 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh,
2239 dentry->d_name.name,
2240 dentry->d_name.len, &lookup);
2246 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
2247 ORPHAN_DIR_SYSTEM_INODE,
2249 if (!orphan_dir_inode) {
2255 mutex_lock(&orphan_dir_inode->i_mutex);
2257 status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
2260 mutex_unlock(&orphan_dir_inode->i_mutex);
2261 iput(orphan_dir_inode);
2265 status = ocfs2_read_inode_block(inode, &di_bh);
2271 handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb));
2272 if (IS_ERR(handle)) {
2273 status = PTR_ERR(handle);
2279 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
2280 di_bh, OCFS2_JOURNAL_ACCESS_WRITE);
2286 status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode,
2293 di = (struct ocfs2_dinode *)di_bh->b_data;
2294 le32_add_cpu(&di->i_flags, -OCFS2_ORPHANED_FL);
2295 di->i_orphaned_slot = 0;
2297 ocfs2_set_links_count(di, inode->i_nlink);
2298 ocfs2_journal_dirty(handle, di_bh);
2300 status = ocfs2_add_entry(handle, dentry, inode,
2301 OCFS2_I(inode)->ip_blkno, parent_di_bh,
2308 status = ocfs2_dentry_attach_lock(dentry, inode,
2309 OCFS2_I(dir)->ip_blkno);
2315 dentry->d_op = &ocfs2_dentry_ops;
2316 d_instantiate(dentry, inode);
2319 ocfs2_commit_trans(osb, handle);
2321 ocfs2_inode_unlock(orphan_dir_inode, 1);
2322 mutex_unlock(&orphan_dir_inode->i_mutex);
2323 iput(orphan_dir_inode);
2326 ocfs2_inode_unlock(dir, 1);
2329 brelse(parent_di_bh);
2330 brelse(orphan_dir_bh);
2332 ocfs2_free_dir_lookup_result(&lookup);
2339 const struct inode_operations ocfs2_dir_iops = {
2340 .create = ocfs2_create,
2341 .lookup = ocfs2_lookup,
2343 .unlink = ocfs2_unlink,
2344 .rmdir = ocfs2_unlink,
2345 .symlink = ocfs2_symlink,
2346 .mkdir = ocfs2_mkdir,
2347 .mknod = ocfs2_mknod,
2348 .rename = ocfs2_rename,
2349 .setattr = ocfs2_setattr,
2350 .getattr = ocfs2_getattr,
2351 .permission = ocfs2_permission,
2352 .setxattr = generic_setxattr,
2353 .getxattr = generic_getxattr,
2354 .listxattr = ocfs2_listxattr,
2355 .removexattr = generic_removexattr,
2356 .fiemap = ocfs2_fiemap,