blob: b1eb50ae40979a6451cbc5db003313a013868d54 [file] [log] [blame]
Mark Fashehccd979b2005-12-15 14:31:24 -08001/* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
3 *
4 * namei.c
5 *
6 * Create and rename file, directory, symlinks
7 *
8 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
9 *
10 * Portions of this code from linux/fs/ext3/dir.c
11 *
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)
16 *
17 * from
18 *
19 * linux/fs/minix/dir.c
20 *
21 * Copyright (C) 1991, 1992 Linux Torvalds
22 *
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.
27 *
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.
32 *
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.
37 */
38
39#include <linux/fs.h>
40#include <linux/types.h>
41#include <linux/slab.h>
42#include <linux/highmem.h>
Jan Karaa90714c2008-10-09 19:38:40 +020043#include <linux/quotaops.h>
Mark Fashehccd979b2005-12-15 14:31:24 -080044
45#define MLOG_MASK_PREFIX ML_NAMEI
46#include <cluster/masklog.h>
47
48#include "ocfs2.h"
49
50#include "alloc.h"
51#include "dcache.h"
52#include "dir.h"
53#include "dlmglue.h"
54#include "extent_map.h"
55#include "file.h"
56#include "inode.h"
57#include "journal.h"
58#include "namei.h"
59#include "suballoc.h"
Mark Fashehaa958872006-04-21 13:49:02 -070060#include "super.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080061#include "symlink.h"
62#include "sysfile.h"
63#include "uptodate.h"
Tiger Yangcf1d6c72008-08-18 17:11:00 +080064#include "xattr.h"
Tiger Yang89c38bd2008-11-14 11:17:41 +080065#include "acl.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080066
67#include "buffer_head_io.h"
68
Mark Fashehccd979b2005-12-15 14:31:24 -080069static int ocfs2_mknod_locked(struct ocfs2_super *osb,
70 struct inode *dir,
Tiger Yangf5d36202008-11-14 11:15:44 +080071 struct inode *inode,
Mark Fashehccd979b2005-12-15 14:31:24 -080072 dev_t dev,
73 struct buffer_head **new_fe_bh,
74 struct buffer_head *parent_fe_bh,
Mark Fasheh1fabe142006-10-09 18:11:45 -070075 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -080076 struct ocfs2_alloc_context *inode_ac);
77
Mark Fashehccd979b2005-12-15 14:31:24 -080078static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
Mark Fasheh5098c272006-10-05 18:12:57 -070079 struct inode **ret_orphan_dir,
Tao Ma19bd3412009-08-18 11:44:10 +080080 u64 blkno,
Mark Fashehccd979b2005-12-15 14:31:24 -080081 char *name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -080082 struct ocfs2_dir_lookup_result *lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -080083
84static int ocfs2_orphan_add(struct ocfs2_super *osb,
Mark Fasheh1fabe142006-10-09 18:11:45 -070085 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -080086 struct inode *inode,
Tristan Ye3939fda2010-03-19 09:21:09 +080087 struct buffer_head *fe_bh,
Mark Fashehccd979b2005-12-15 14:31:24 -080088 char *name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -080089 struct ocfs2_dir_lookup_result *lookup,
Mark Fasheh5098c272006-10-05 18:12:57 -070090 struct inode *orphan_dir_inode);
Mark Fashehccd979b2005-12-15 14:31:24 -080091
92static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
Mark Fasheh1fabe142006-10-09 18:11:45 -070093 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -080094 struct inode *inode,
95 const char *symname);
96
Mark Fashehccd979b2005-12-15 14:31:24 -080097/* An orphan dir name is an 8 byte value, printed as a hex string */
98#define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64)))
99
100static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry,
101 struct nameidata *nd)
102{
103 int status;
104 u64 blkno;
Mark Fashehccd979b2005-12-15 14:31:24 -0800105 struct inode *inode = NULL;
106 struct dentry *ret;
Mark Fashehccd979b2005-12-15 14:31:24 -0800107 struct ocfs2_inode_info *oi;
108
109 mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry,
110 dentry->d_name.len, dentry->d_name.name);
111
112 if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) {
113 ret = ERR_PTR(-ENAMETOOLONG);
114 goto bail;
115 }
116
Mark Fashehb06970532006-03-03 10:24:33 -0800117 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);
Mark Fashehccd979b2005-12-15 14:31:24 -0800119
Jan Karacb257972009-06-04 15:26:50 +0200120 status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT);
Mark Fashehccd979b2005-12-15 14:31:24 -0800121 if (status < 0) {
122 if (status != -ENOENT)
123 mlog_errno(status);
124 ret = ERR_PTR(status);
125 goto bail;
126 }
127
Mark Fashehbe94d112007-09-11 15:22:06 -0700128 status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name,
129 dentry->d_name.len, &blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800130 if (status < 0)
131 goto bail_add;
132
Jan Kara5fa06132008-01-11 00:11:45 +0100133 inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800134 if (IS_ERR(inode)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800135 ret = ERR_PTR(-EACCES);
136 goto bail_unlock;
137 }
138
139 oi = OCFS2_I(inode);
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
144 * unlink. */
145 spin_lock(&oi->ip_lock);
146 oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED;
Mark Fashehccd979b2005-12-15 14:31:24 -0800147 spin_unlock(&oi->ip_lock);
148
149bail_add:
Mark Fashehccd979b2005-12-15 14:31:24 -0800150 dentry->d_op = &ocfs2_dentry_ops;
151 ret = d_splice_alias(inode, dentry);
152
Mark Fasheh379dfe92006-09-08 14:21:03 -0700153 if (inode) {
154 /*
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
159 * code.
160 *
161 * NOTE: This dentry already has ->d_op set from
162 * ocfs2_get_parent() and ocfs2_get_dentry()
163 */
164 if (ret)
165 dentry = ret;
166
167 status = ocfs2_dentry_attach_lock(dentry, inode,
Mark Fasheh0027dd52006-09-21 16:51:28 -0700168 OCFS2_I(dir)->ip_blkno);
Mark Fasheh379dfe92006-09-08 14:21:03 -0700169 if (status) {
170 mlog_errno(status);
171 ret = ERR_PTR(status);
172 goto bail_unlock;
173 }
174 }
175
Mark Fashehccd979b2005-12-15 14:31:24 -0800176bail_unlock:
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
Mark Fasheh34d024f2007-09-24 15:56:19 -0700180 * the downconvert thread and have a stale dentry. */
Mark Fashehe63aecb62007-10-18 15:30:42 -0700181 ocfs2_inode_unlock(dir, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800182
183bail:
Mark Fashehccd979b2005-12-15 14:31:24 -0800184
185 mlog_exit_ptr(ret);
186
187 return ret;
188}
189
Tiger Yangf5d36202008-11-14 11:15:44 +0800190static struct inode *ocfs2_get_init_inode(struct inode *dir, int mode)
191{
192 struct inode *inode;
193
194 inode = new_inode(dir->i_sb);
195 if (!inode) {
196 mlog(ML_ERROR, "new_inode failed!\n");
197 return NULL;
198 }
199
200 /* populate as many fields early on as possible - many of
201 * these are used by the support functions here and in
202 * callers. */
203 if (S_ISDIR(mode))
204 inode->i_nlink = 2;
205 else
206 inode->i_nlink = 1;
207 inode->i_uid = current_fsuid();
208 if (dir->i_mode & S_ISGID) {
209 inode->i_gid = dir->i_gid;
210 if (S_ISDIR(mode))
211 mode |= S_ISGID;
212 } else
213 inode->i_gid = current_fsgid();
214 inode->i_mode = mode;
Christoph Hellwig871a2932010-03-03 09:05:07 -0500215 dquot_initialize(inode);
Tiger Yangf5d36202008-11-14 11:15:44 +0800216 return inode;
217}
218
Mark Fashehccd979b2005-12-15 14:31:24 -0800219static int ocfs2_mknod(struct inode *dir,
220 struct dentry *dentry,
221 int mode,
222 dev_t dev)
223{
224 int status = 0;
225 struct buffer_head *parent_fe_bh = NULL;
Mark Fasheh1fabe142006-10-09 18:11:45 -0700226 handle_t *handle = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800227 struct ocfs2_super *osb;
228 struct ocfs2_dinode *dirfe;
229 struct buffer_head *new_fe_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800230 struct inode *inode = NULL;
231 struct ocfs2_alloc_context *inode_ac = NULL;
232 struct ocfs2_alloc_context *data_ac = NULL;
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800233 struct ocfs2_alloc_context *meta_ac = NULL;
Tiger Yang534eadd2008-11-14 11:16:41 +0800234 int want_clusters = 0;
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800235 int want_meta = 0;
Tiger Yang534eadd2008-11-14 11:16:41 +0800236 int xattr_credits = 0;
237 struct ocfs2_security_xattr_info si = {
238 .enable = 1,
239 };
Jan Karaa90714c2008-10-09 19:38:40 +0200240 int did_quota_inode = 0;
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800241 struct ocfs2_dir_lookup_result lookup = { NULL, };
Mark Fashehccd979b2005-12-15 14:31:24 -0800242
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);
246
Christoph Hellwig871a2932010-03-03 09:05:07 -0500247 dquot_initialize(dir);
Christoph Hellwig907f4552010-03-03 09:05:06 -0500248
Mark Fashehccd979b2005-12-15 14:31:24 -0800249 /* get our super block */
250 osb = OCFS2_SB(dir->i_sb);
251
Mark Fashehe63aecb62007-10-18 15:30:42 -0700252 status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
Mark Fashehe3a82132006-10-05 16:04:17 -0700253 if (status < 0) {
254 if (status != -ENOENT)
255 mlog_errno(status);
256 return status;
257 }
258
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800259 if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) {
Mark Fasheha663e302006-08-09 11:45:07 -0700260 status = -EMLINK;
261 goto leave;
262 }
263
Mark Fashehccd979b2005-12-15 14:31:24 -0800264 dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800265 if (!ocfs2_read_links_count(dirfe)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800266 /* can't make a file in a deleted directory. */
267 status = -ENOENT;
268 goto leave;
269 }
270
271 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
272 dentry->d_name.len);
273 if (status)
274 goto leave;
275
276 /* get a spot inside the dir. */
277 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
278 dentry->d_name.name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800279 dentry->d_name.len, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800280 if (status < 0) {
281 mlog_errno(status);
282 goto leave;
283 }
284
285 /* reserve an inode spot */
Mark Fashehda5cbf22006-10-06 18:34:35 -0700286 status = ocfs2_reserve_new_inode(osb, &inode_ac);
Mark Fashehccd979b2005-12-15 14:31:24 -0800287 if (status < 0) {
288 if (status != -ENOSPC)
289 mlog_errno(status);
290 goto leave;
291 }
292
Tiger Yangf5d36202008-11-14 11:15:44 +0800293 inode = ocfs2_get_init_inode(dir, mode);
294 if (!inode) {
295 status = -ENOMEM;
296 mlog_errno(status);
297 goto leave;
298 }
299
Tiger Yang534eadd2008-11-14 11:16:41 +0800300 /* get security xattr */
301 status = ocfs2_init_security_get(inode, dir, &si);
302 if (status) {
303 if (status == -EOPNOTSUPP)
304 si.enable = 0;
305 else {
306 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -0800307 goto leave;
308 }
309 }
310
Tiger Yang89c38bd2008-11-14 11:17:41 +0800311 /* calculate meta data/clusters for setting security and acl xattr */
312 status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800313 &si, &want_clusters,
314 &xattr_credits, &want_meta);
Tiger Yang89c38bd2008-11-14 11:17:41 +0800315 if (status < 0) {
316 mlog_errno(status);
317 goto leave;
Tiger Yang534eadd2008-11-14 11:16:41 +0800318 }
319
320 /* Reserve a cluster if creating an extent based directory. */
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800321 if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) {
Tiger Yang534eadd2008-11-14 11:16:41 +0800322 want_clusters += 1;
323
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800324 /* Dir indexing requires extra space as well */
Mark Fasheh4ed8a6b2008-11-24 17:02:08 -0800325 if (ocfs2_supports_indexed_dirs(osb))
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800326 want_meta++;
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800327 }
328
329 status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac);
330 if (status < 0) {
331 if (status != -ENOSPC)
332 mlog_errno(status);
333 goto leave;
334 }
335
Tiger Yang534eadd2008-11-14 11:16:41 +0800336 status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
337 if (status < 0) {
338 if (status != -ENOSPC)
339 mlog_errno(status);
340 goto leave;
341 }
342
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800343 handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb,
344 S_ISDIR(mode),
345 xattr_credits));
Mark Fashehccd979b2005-12-15 14:31:24 -0800346 if (IS_ERR(handle)) {
347 status = PTR_ERR(handle);
348 handle = NULL;
349 mlog_errno(status);
350 goto leave;
351 }
352
Christoph Hellwig63936dd2010-03-03 09:05:01 -0500353 status = dquot_alloc_inode(inode);
354 if (status)
Jan Karaa90714c2008-10-09 19:38:40 +0200355 goto leave;
Jan Karaa90714c2008-10-09 19:38:40 +0200356 did_quota_inode = 1;
357
Tao Ma19bd3412009-08-18 11:44:10 +0800358 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);
361
Mark Fashehccd979b2005-12-15 14:31:24 -0800362 /* do the real work now. */
Tao Ma19bd3412009-08-18 11:44:10 +0800363 status = ocfs2_mknod_locked(osb, dir, inode, dev,
Mark Fashehccd979b2005-12-15 14:31:24 -0800364 &new_fe_bh, parent_fe_bh, handle,
Tiger Yangf5d36202008-11-14 11:15:44 +0800365 inode_ac);
Mark Fashehccd979b2005-12-15 14:31:24 -0800366 if (status < 0) {
367 mlog_errno(status);
368 goto leave;
369 }
370
371 if (S_ISDIR(mode)) {
372 status = ocfs2_fill_new_dir(osb, handle, dir, inode,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800373 new_fe_bh, data_ac, meta_ac);
Mark Fashehccd979b2005-12-15 14:31:24 -0800374 if (status < 0) {
375 mlog_errno(status);
376 goto leave;
377 }
378
Joel Becker0cf2f762009-02-12 16:41:25 -0800379 status = ocfs2_journal_access_di(handle, INODE_CACHE(dir),
380 parent_fe_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700381 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800382 if (status < 0) {
383 mlog_errno(status);
384 goto leave;
385 }
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800386 ocfs2_add_links_count(dirfe, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -0800387 status = ocfs2_journal_dirty(handle, parent_fe_bh);
388 if (status < 0) {
389 mlog_errno(status);
390 goto leave;
391 }
Dave Hansend8c76e62006-09-30 23:29:04 -0700392 inc_nlink(dir);
Mark Fashehccd979b2005-12-15 14:31:24 -0800393 }
394
Tiger Yang89c38bd2008-11-14 11:17:41 +0800395 status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800396 meta_ac, data_ac);
Tiger Yang89c38bd2008-11-14 11:17:41 +0800397 if (status < 0) {
398 mlog_errno(status);
399 goto leave;
400 }
401
Tiger Yang534eadd2008-11-14 11:16:41 +0800402 if (si.enable) {
403 status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800404 meta_ac, data_ac);
Tiger Yang534eadd2008-11-14 11:16:41 +0800405 if (status < 0) {
406 mlog_errno(status);
407 goto leave;
408 }
409 }
410
Mark Fashehccd979b2005-12-15 14:31:24 -0800411 status = ocfs2_add_entry(handle, dentry, inode,
412 OCFS2_I(inode)->ip_blkno, parent_fe_bh,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800413 &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800414 if (status < 0) {
415 mlog_errno(status);
416 goto leave;
417 }
418
Mark Fasheh379dfe92006-09-08 14:21:03 -0700419 status = ocfs2_dentry_attach_lock(dentry, inode,
Mark Fasheh0027dd52006-09-21 16:51:28 -0700420 OCFS2_I(dir)->ip_blkno);
Mark Fasheh379dfe92006-09-08 14:21:03 -0700421 if (status) {
422 mlog_errno(status);
423 goto leave;
424 }
425
Mark Fashehccd979b2005-12-15 14:31:24 -0800426 insert_inode_hash(inode);
427 dentry->d_op = &ocfs2_dentry_ops;
428 d_instantiate(dentry, inode);
429 status = 0;
430leave:
Jan Karaa90714c2008-10-09 19:38:40 +0200431 if (status < 0 && did_quota_inode)
Christoph Hellwig63936dd2010-03-03 09:05:01 -0500432 dquot_free_inode(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800433 if (handle)
Mark Fasheh02dc1af2006-10-09 16:48:10 -0700434 ocfs2_commit_trans(osb, handle);
Mark Fashehccd979b2005-12-15 14:31:24 -0800435
Mark Fashehe63aecb62007-10-18 15:30:42 -0700436 ocfs2_inode_unlock(dir, 1);
Mark Fashehe3a82132006-10-05 16:04:17 -0700437
Mark Fashehccd979b2005-12-15 14:31:24 -0800438 if (status == -ENOSPC)
439 mlog(0, "Disk is full\n");
440
Mark Fasheha81cb882008-10-07 14:25:16 -0700441 brelse(new_fe_bh);
Mark Fasheha81cb882008-10-07 14:25:16 -0700442 brelse(parent_fe_bh);
Tiger Yang534eadd2008-11-14 11:16:41 +0800443 kfree(si.name);
444 kfree(si.value);
Mark Fashehccd979b2005-12-15 14:31:24 -0800445
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800446 ocfs2_free_dir_lookup_result(&lookup);
447
Tiger Yangf5d36202008-11-14 11:15:44 +0800448 if ((status < 0) && inode) {
449 clear_nlink(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800450 iput(inode);
Tiger Yangf5d36202008-11-14 11:15:44 +0800451 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800452
453 if (inode_ac)
454 ocfs2_free_alloc_context(inode_ac);
455
456 if (data_ac)
457 ocfs2_free_alloc_context(data_ac);
458
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800459 if (meta_ac)
460 ocfs2_free_alloc_context(meta_ac);
Tiger Yang534eadd2008-11-14 11:16:41 +0800461
Mark Fashehccd979b2005-12-15 14:31:24 -0800462 mlog_exit(status);
463
464 return status;
465}
466
467static int ocfs2_mknod_locked(struct ocfs2_super *osb,
468 struct inode *dir,
Tiger Yangf5d36202008-11-14 11:15:44 +0800469 struct inode *inode,
Mark Fashehccd979b2005-12-15 14:31:24 -0800470 dev_t dev,
471 struct buffer_head **new_fe_bh,
472 struct buffer_head *parent_fe_bh,
Mark Fasheh1fabe142006-10-09 18:11:45 -0700473 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -0800474 struct ocfs2_alloc_context *inode_ac)
475{
476 int status = 0;
477 struct ocfs2_dinode *fe = NULL;
478 struct ocfs2_extent_list *fel;
479 u64 fe_blkno = 0;
480 u16 suballoc_bit;
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800481 u16 feat;
Mark Fashehccd979b2005-12-15 14:31:24 -0800482
Mark Fashehccd979b2005-12-15 14:31:24 -0800483 *new_fe_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800484
Tao Ma13821152009-02-25 00:53:23 +0800485 status = ocfs2_claim_new_inode(osb, handle, dir, parent_fe_bh,
486 inode_ac, &suballoc_bit, &fe_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800487 if (status < 0) {
488 mlog_errno(status);
489 goto leave;
490 }
491
Mark Fashehccd979b2005-12-15 14:31:24 -0800492 /* populate as many fields early on as possible - many of
493 * these are used by the support functions here and in
494 * callers. */
495 inode->i_ino = ino_from_blkno(osb->sb, fe_blkno);
496 OCFS2_I(inode)->ip_blkno = fe_blkno;
Mark Fashehccd979b2005-12-15 14:31:24 -0800497 spin_lock(&osb->osb_lock);
498 inode->i_generation = osb->s_next_generation++;
499 spin_unlock(&osb->osb_lock);
500
501 *new_fe_bh = sb_getblk(osb->sb, fe_blkno);
502 if (!*new_fe_bh) {
503 status = -EIO;
504 mlog_errno(status);
505 goto leave;
506 }
Joel Becker8cb471e2009-02-10 20:00:41 -0800507 ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800508
Joel Becker0cf2f762009-02-12 16:41:25 -0800509 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
510 *new_fe_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700511 OCFS2_JOURNAL_ACCESS_CREATE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800512 if (status < 0) {
513 mlog_errno(status);
514 goto leave;
515 }
516
517 fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data;
518 memset(fe, 0, osb->sb->s_blocksize);
519
520 fe->i_generation = cpu_to_le32(inode->i_generation);
521 fe->i_fs_generation = cpu_to_le32(osb->fs_generation);
522 fe->i_blkno = cpu_to_le64(fe_blkno);
523 fe->i_suballoc_bit = cpu_to_le16(suballoc_bit);
Tao Ma4d0ddb22008-03-05 16:11:46 +0800524 fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot);
Tiger Yangf5d36202008-11-14 11:15:44 +0800525 fe->i_uid = cpu_to_le32(inode->i_uid);
526 fe->i_gid = cpu_to_le32(inode->i_gid);
527 fe->i_mode = cpu_to_le16(inode->i_mode);
528 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
Mark Fashehccd979b2005-12-15 14:31:24 -0800529 fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev));
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800530
531 ocfs2_set_links_count(fe, inode->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -0800532
533 fe->i_last_eb_blk = 0;
534 strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE);
535 le32_add_cpu(&fe->i_flags, OCFS2_VALID_FL);
536 fe->i_atime = fe->i_ctime = fe->i_mtime =
537 cpu_to_le64(CURRENT_TIME.tv_sec);
538 fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec =
539 cpu_to_le32(CURRENT_TIME.tv_nsec);
540 fe->i_dtime = 0;
541
Mark Fasheh5b6a3a22007-09-13 16:33:54 -0700542 /*
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800543 * If supported, directories start with inline data. If inline
544 * isn't supported, but indexing is, we start them as indexed.
Mark Fasheh5b6a3a22007-09-13 16:33:54 -0700545 */
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800546 feat = le16_to_cpu(fe->i_dyn_features);
Tiger Yangf5d36202008-11-14 11:15:44 +0800547 if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) {
Mark Fasheh5b6a3a22007-09-13 16:33:54 -0700548 fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL);
549
Tiger Yangd9ae49d2009-03-05 11:06:15 +0800550 fe->id2.i_data.id_count = cpu_to_le16(
551 ocfs2_max_inline_data_with_xattr(osb->sb, fe));
Mark Fasheh5b6a3a22007-09-13 16:33:54 -0700552 } else {
553 fel = &fe->id2.i_list;
554 fel->l_tree_depth = 0;
555 fel->l_next_free_rec = 0;
556 fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb));
557 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800558
559 status = ocfs2_journal_dirty(handle, *new_fe_bh);
560 if (status < 0) {
561 mlog_errno(status);
562 goto leave;
563 }
564
Joel Beckerb657c952008-11-13 14:49:11 -0800565 ocfs2_populate_inode(inode, fe, 1);
Joel Becker0cf2f762009-02-12 16:41:25 -0800566 ocfs2_ci_set_new(osb, INODE_CACHE(inode));
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800567 if (!ocfs2_mount_local(osb)) {
568 status = ocfs2_create_new_inode_locks(inode);
569 if (status < 0)
570 mlog_errno(status);
571 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800572
573 status = 0; /* error in ocfs2_create_new_inode_locks is not
574 * critical */
575
Mark Fashehccd979b2005-12-15 14:31:24 -0800576leave:
577 if (status < 0) {
578 if (*new_fe_bh) {
579 brelse(*new_fe_bh);
580 *new_fe_bh = NULL;
581 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800582 }
583
584 mlog_exit(status);
585 return status;
586}
587
588static int ocfs2_mkdir(struct inode *dir,
589 struct dentry *dentry,
590 int mode)
591{
592 int ret;
593
594 mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode,
595 dentry->d_name.len, dentry->d_name.name);
596 ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0);
597 mlog_exit(ret);
598
599 return ret;
600}
601
602static int ocfs2_create(struct inode *dir,
603 struct dentry *dentry,
604 int mode,
605 struct nameidata *nd)
606{
607 int ret;
608
609 mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode,
610 dentry->d_name.len, dentry->d_name.name);
611 ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0);
612 mlog_exit(ret);
613
614 return ret;
615}
616
617static int ocfs2_link(struct dentry *old_dentry,
618 struct inode *dir,
619 struct dentry *dentry)
620{
Mark Fasheh1fabe142006-10-09 18:11:45 -0700621 handle_t *handle;
Mark Fashehccd979b2005-12-15 14:31:24 -0800622 struct inode *inode = old_dentry->d_inode;
623 int err;
624 struct buffer_head *fe_bh = NULL;
625 struct buffer_head *parent_fe_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800626 struct ocfs2_dinode *fe = NULL;
627 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800628 struct ocfs2_dir_lookup_result lookup = { NULL, };
Mark Fashehccd979b2005-12-15 14:31:24 -0800629
630 mlog_entry("(inode=%lu, old='%.*s' new='%.*s')\n", inode->i_ino,
631 old_dentry->d_name.len, old_dentry->d_name.name,
632 dentry->d_name.len, dentry->d_name.name);
633
Mark Fasheh123a9642006-10-05 16:48:23 -0700634 if (S_ISDIR(inode->i_mode))
635 return -EPERM;
Mark Fashehccd979b2005-12-15 14:31:24 -0800636
Christoph Hellwig871a2932010-03-03 09:05:07 -0500637 dquot_initialize(dir);
Christoph Hellwig907f4552010-03-03 09:05:06 -0500638
Jan Karacb257972009-06-04 15:26:50 +0200639 err = ocfs2_inode_lock_nested(dir, &parent_fe_bh, 1, OI_LS_PARENT);
Mark Fashehccd979b2005-12-15 14:31:24 -0800640 if (err < 0) {
641 if (err != -ENOENT)
642 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700643 return err;
Mark Fashehccd979b2005-12-15 14:31:24 -0800644 }
645
Tiger Yang0f62de22006-08-31 20:39:47 -0700646 if (!dir->i_nlink) {
647 err = -ENOENT;
Mark Fasheh123a9642006-10-05 16:48:23 -0700648 goto out;
Tiger Yang0f62de22006-08-31 20:39:47 -0700649 }
650
Mark Fashehccd979b2005-12-15 14:31:24 -0800651 err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
652 dentry->d_name.len);
653 if (err)
Mark Fasheh123a9642006-10-05 16:48:23 -0700654 goto out;
Mark Fashehccd979b2005-12-15 14:31:24 -0800655
656 err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
657 dentry->d_name.name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800658 dentry->d_name.len, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800659 if (err < 0) {
660 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700661 goto out;
Mark Fashehccd979b2005-12-15 14:31:24 -0800662 }
663
Mark Fashehe63aecb62007-10-18 15:30:42 -0700664 err = ocfs2_inode_lock(inode, &fe_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -0800665 if (err < 0) {
666 if (err != -ENOENT)
667 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700668 goto out;
Mark Fashehccd979b2005-12-15 14:31:24 -0800669 }
670
671 fe = (struct ocfs2_dinode *) fe_bh->b_data;
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800672 if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800673 err = -EMLINK;
Mark Fasheh123a9642006-10-05 16:48:23 -0700674 goto out_unlock_inode;
Mark Fashehccd979b2005-12-15 14:31:24 -0800675 }
676
Jan Karaa90714c2008-10-09 19:38:40 +0200677 handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb));
Mark Fashehccd979b2005-12-15 14:31:24 -0800678 if (IS_ERR(handle)) {
679 err = PTR_ERR(handle);
680 handle = NULL;
681 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700682 goto out_unlock_inode;
Mark Fashehccd979b2005-12-15 14:31:24 -0800683 }
684
Joel Becker0cf2f762009-02-12 16:41:25 -0800685 err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700686 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800687 if (err < 0) {
688 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700689 goto out_commit;
Mark Fashehccd979b2005-12-15 14:31:24 -0800690 }
691
Dave Hansend8c76e62006-09-30 23:29:04 -0700692 inc_nlink(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800693 inode->i_ctime = CURRENT_TIME;
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800694 ocfs2_set_links_count(fe, inode->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -0800695 fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
696 fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
697
698 err = ocfs2_journal_dirty(handle, fe_bh);
699 if (err < 0) {
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800700 ocfs2_add_links_count(fe, -1);
Dave Hansen9a53c3a2006-09-30 23:29:03 -0700701 drop_nlink(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800702 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700703 goto out_commit;
Mark Fashehccd979b2005-12-15 14:31:24 -0800704 }
705
706 err = ocfs2_add_entry(handle, dentry, inode,
707 OCFS2_I(inode)->ip_blkno,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800708 parent_fe_bh, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800709 if (err) {
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800710 ocfs2_add_links_count(fe, -1);
Dave Hansen9a53c3a2006-09-30 23:29:03 -0700711 drop_nlink(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800712 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700713 goto out_commit;
Mark Fashehccd979b2005-12-15 14:31:24 -0800714 }
715
Mark Fasheh0027dd52006-09-21 16:51:28 -0700716 err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
Mark Fasheh379dfe92006-09-08 14:21:03 -0700717 if (err) {
718 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700719 goto out_commit;
Mark Fasheh379dfe92006-09-08 14:21:03 -0700720 }
721
Mark Fashehccd979b2005-12-15 14:31:24 -0800722 atomic_inc(&inode->i_count);
723 dentry->d_op = &ocfs2_dentry_ops;
724 d_instantiate(dentry, inode);
Mark Fasheh123a9642006-10-05 16:48:23 -0700725
726out_commit:
Mark Fasheh02dc1af2006-10-09 16:48:10 -0700727 ocfs2_commit_trans(osb, handle);
Mark Fasheh123a9642006-10-05 16:48:23 -0700728out_unlock_inode:
Mark Fashehe63aecb62007-10-18 15:30:42 -0700729 ocfs2_inode_unlock(inode, 1);
Mark Fasheh123a9642006-10-05 16:48:23 -0700730
731out:
Mark Fashehe63aecb62007-10-18 15:30:42 -0700732 ocfs2_inode_unlock(dir, 1);
Mark Fasheh123a9642006-10-05 16:48:23 -0700733
Mark Fasheha81cb882008-10-07 14:25:16 -0700734 brelse(fe_bh);
735 brelse(parent_fe_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800736
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800737 ocfs2_free_dir_lookup_result(&lookup);
738
Mark Fashehccd979b2005-12-15 14:31:24 -0800739 mlog_exit(err);
740
741 return err;
742}
743
Mark Fasheh379dfe92006-09-08 14:21:03 -0700744/*
745 * Takes and drops an exclusive lock on the given dentry. This will
746 * force other nodes to drop it.
747 */
748static int ocfs2_remote_dentry_delete(struct dentry *dentry)
749{
750 int ret;
751
752 ret = ocfs2_dentry_lock(dentry, 1);
753 if (ret)
754 mlog_errno(ret);
755 else
756 ocfs2_dentry_unlock(dentry, 1);
757
758 return ret;
759}
760
Mark Fasheh17ff7852006-09-30 23:29:05 -0700761static inline int inode_is_unlinkable(struct inode *inode)
762{
763 if (S_ISDIR(inode->i_mode)) {
764 if (inode->i_nlink == 2)
765 return 1;
766 return 0;
767 }
768
769 if (inode->i_nlink == 1)
770 return 1;
771 return 0;
772}
773
Mark Fashehccd979b2005-12-15 14:31:24 -0800774static int ocfs2_unlink(struct inode *dir,
775 struct dentry *dentry)
776{
777 int status;
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700778 int child_locked = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -0800779 struct inode *inode = dentry->d_inode;
Mark Fasheh5098c272006-10-05 18:12:57 -0700780 struct inode *orphan_dir = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800781 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
782 u64 blkno;
783 struct ocfs2_dinode *fe = NULL;
784 struct buffer_head *fe_bh = NULL;
785 struct buffer_head *parent_node_bh = NULL;
Mark Fasheh1fabe142006-10-09 18:11:45 -0700786 handle_t *handle = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800787 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800788 struct ocfs2_dir_lookup_result lookup = { NULL, };
789 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
Mark Fashehccd979b2005-12-15 14:31:24 -0800790
791 mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry,
792 dentry->d_name.len, dentry->d_name.name);
793
Christoph Hellwig871a2932010-03-03 09:05:07 -0500794 dquot_initialize(dir);
Christoph Hellwig907f4552010-03-03 09:05:06 -0500795
Mark Fashehccd979b2005-12-15 14:31:24 -0800796 BUG_ON(dentry->d_parent->d_inode != dir);
797
Mark Fashehb06970532006-03-03 10:24:33 -0800798 mlog(0, "ino = %llu\n", (unsigned long long)OCFS2_I(inode)->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800799
800 if (inode == osb->root_inode) {
801 mlog(0, "Cannot delete the root directory\n");
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700802 return -EPERM;
Mark Fashehccd979b2005-12-15 14:31:24 -0800803 }
804
Jan Karacb257972009-06-04 15:26:50 +0200805 status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1,
806 OI_LS_PARENT);
Mark Fashehccd979b2005-12-15 14:31:24 -0800807 if (status < 0) {
808 if (status != -ENOENT)
809 mlog_errno(status);
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700810 return status;
Mark Fashehccd979b2005-12-15 14:31:24 -0800811 }
812
813 status = ocfs2_find_files_on_disk(dentry->d_name.name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800814 dentry->d_name.len, &blkno, dir,
815 &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800816 if (status < 0) {
817 if (status != -ENOENT)
818 mlog_errno(status);
819 goto leave;
820 }
821
822 if (OCFS2_I(inode)->ip_blkno != blkno) {
823 status = -ENOENT;
824
Mark Fashehb06970532006-03-03 10:24:33 -0800825 mlog(0, "ip_blkno %llu != dirent blkno %llu ip_flags = %x\n",
826 (unsigned long long)OCFS2_I(inode)->ip_blkno,
827 (unsigned long long)blkno, OCFS2_I(inode)->ip_flags);
Mark Fashehccd979b2005-12-15 14:31:24 -0800828 goto leave;
829 }
830
Mark Fashehe63aecb62007-10-18 15:30:42 -0700831 status = ocfs2_inode_lock(inode, &fe_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -0800832 if (status < 0) {
833 if (status != -ENOENT)
834 mlog_errno(status);
835 goto leave;
836 }
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700837 child_locked = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -0800838
839 if (S_ISDIR(inode->i_mode)) {
Mark Fashehb80b5492009-02-18 11:41:38 -0800840 if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800841 status = -ENOTEMPTY;
842 goto leave;
843 }
844 }
845
Mark Fasheh379dfe92006-09-08 14:21:03 -0700846 status = ocfs2_remote_dentry_delete(dentry);
Mark Fashehccd979b2005-12-15 14:31:24 -0800847 if (status < 0) {
Mark Fasheh34d024f2007-09-24 15:56:19 -0700848 /* This remote delete should succeed under all normal
Mark Fashehccd979b2005-12-15 14:31:24 -0800849 * circumstances. */
850 mlog_errno(status);
851 goto leave;
852 }
853
Mark Fasheh17ff7852006-09-30 23:29:05 -0700854 if (inode_is_unlinkable(inode)) {
Tao Ma19bd3412009-08-18 11:44:10 +0800855 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
856 OCFS2_I(inode)->ip_blkno,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800857 orphan_name, &orphan_insert);
Mark Fashehccd979b2005-12-15 14:31:24 -0800858 if (status < 0) {
859 mlog_errno(status);
860 goto leave;
861 }
862 }
863
Jan Karaa90714c2008-10-09 19:38:40 +0200864 handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb));
Mark Fashehccd979b2005-12-15 14:31:24 -0800865 if (IS_ERR(handle)) {
866 status = PTR_ERR(handle);
867 handle = NULL;
868 mlog_errno(status);
869 goto leave;
870 }
871
Joel Becker0cf2f762009-02-12 16:41:25 -0800872 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700873 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800874 if (status < 0) {
875 mlog_errno(status);
876 goto leave;
877 }
878
879 fe = (struct ocfs2_dinode *) fe_bh->b_data;
880
Mark Fasheh17ff7852006-09-30 23:29:05 -0700881 if (inode_is_unlinkable(inode)) {
Tristan Ye3939fda2010-03-19 09:21:09 +0800882 status = ocfs2_orphan_add(osb, handle, inode, fe_bh, orphan_name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800883 &orphan_insert, orphan_dir);
Mark Fashehccd979b2005-12-15 14:31:24 -0800884 if (status < 0) {
885 mlog_errno(status);
886 goto leave;
887 }
888 }
889
890 /* delete the name from the parent dir */
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800891 status = ocfs2_delete_entry(handle, dir, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800892 if (status < 0) {
893 mlog_errno(status);
894 goto leave;
895 }
896
Mark Fasheh17ff7852006-09-30 23:29:05 -0700897 if (S_ISDIR(inode->i_mode))
898 drop_nlink(inode);
899 drop_nlink(inode);
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800900 ocfs2_set_links_count(fe, inode->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -0800901
902 status = ocfs2_journal_dirty(handle, fe_bh);
903 if (status < 0) {
904 mlog_errno(status);
905 goto leave;
906 }
907
Mark Fasheh592282c2007-01-02 17:59:40 -0800908 dir->i_ctime = dir->i_mtime = CURRENT_TIME;
909 if (S_ISDIR(inode->i_mode))
Mark Fasheh17ff7852006-09-30 23:29:05 -0700910 drop_nlink(dir);
Mark Fasheh592282c2007-01-02 17:59:40 -0800911
912 status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh);
913 if (status < 0) {
914 mlog_errno(status);
915 if (S_ISDIR(inode->i_mode))
Dave Hansend8c76e62006-09-30 23:29:04 -0700916 inc_nlink(dir);
Mark Fashehccd979b2005-12-15 14:31:24 -0800917 }
918
919leave:
Mark Fashehccd979b2005-12-15 14:31:24 -0800920 if (handle)
Mark Fasheh02dc1af2006-10-09 16:48:10 -0700921 ocfs2_commit_trans(osb, handle);
Mark Fashehccd979b2005-12-15 14:31:24 -0800922
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700923 if (child_locked)
Mark Fashehe63aecb62007-10-18 15:30:42 -0700924 ocfs2_inode_unlock(inode, 1);
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700925
Mark Fashehe63aecb62007-10-18 15:30:42 -0700926 ocfs2_inode_unlock(dir, 1);
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700927
Mark Fasheh5098c272006-10-05 18:12:57 -0700928 if (orphan_dir) {
929 /* This was locked for us in ocfs2_prepare_orphan_dir() */
Mark Fashehe63aecb62007-10-18 15:30:42 -0700930 ocfs2_inode_unlock(orphan_dir, 1);
Mark Fasheh5098c272006-10-05 18:12:57 -0700931 mutex_unlock(&orphan_dir->i_mutex);
932 iput(orphan_dir);
933 }
934
Mark Fasheha81cb882008-10-07 14:25:16 -0700935 brelse(fe_bh);
Mark Fasheha81cb882008-10-07 14:25:16 -0700936 brelse(parent_node_bh);
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800937
938 ocfs2_free_dir_lookup_result(&orphan_insert);
939 ocfs2_free_dir_lookup_result(&lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800940
941 mlog_exit(status);
942
943 return status;
944}
945
946/*
947 * The only place this should be used is rename!
948 * if they have the same id, then the 1st one is the only one locked.
949 */
950static int ocfs2_double_lock(struct ocfs2_super *osb,
Mark Fashehccd979b2005-12-15 14:31:24 -0800951 struct buffer_head **bh1,
952 struct inode *inode1,
953 struct buffer_head **bh2,
954 struct inode *inode2)
955{
956 int status;
957 struct ocfs2_inode_info *oi1 = OCFS2_I(inode1);
958 struct ocfs2_inode_info *oi2 = OCFS2_I(inode2);
959 struct buffer_head **tmpbh;
960 struct inode *tmpinode;
961
Mark Fashehb06970532006-03-03 10:24:33 -0800962 mlog_entry("(inode1 = %llu, inode2 = %llu)\n",
963 (unsigned long long)oi1->ip_blkno,
964 (unsigned long long)oi2->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800965
Mark Fashehccd979b2005-12-15 14:31:24 -0800966 if (*bh1)
967 *bh1 = NULL;
968 if (*bh2)
969 *bh2 = NULL;
970
971 /* we always want to lock the one with the lower lockid first. */
972 if (oi1->ip_blkno != oi2->ip_blkno) {
973 if (oi1->ip_blkno < oi2->ip_blkno) {
974 /* switch id1 and id2 around */
975 mlog(0, "switching them around...\n");
976 tmpbh = bh2;
977 bh2 = bh1;
978 bh1 = tmpbh;
979
980 tmpinode = inode2;
981 inode2 = inode1;
982 inode1 = tmpinode;
983 }
984 /* lock id2 */
Jan Karacb257972009-06-04 15:26:50 +0200985 status = ocfs2_inode_lock_nested(inode2, bh2, 1,
986 OI_LS_RENAME1);
Mark Fashehccd979b2005-12-15 14:31:24 -0800987 if (status < 0) {
988 if (status != -ENOENT)
989 mlog_errno(status);
990 goto bail;
991 }
992 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -0700993
Mark Fashehccd979b2005-12-15 14:31:24 -0800994 /* lock id1 */
Jan Karacb257972009-06-04 15:26:50 +0200995 status = ocfs2_inode_lock_nested(inode1, bh1, 1, OI_LS_RENAME2);
Mark Fashehccd979b2005-12-15 14:31:24 -0800996 if (status < 0) {
Mark Fasheh8d5596c2006-10-06 15:04:51 -0700997 /*
998 * An error return must mean that no cluster locks
999 * were held on function exit.
1000 */
1001 if (oi1->ip_blkno != oi2->ip_blkno)
Mark Fashehe63aecb62007-10-18 15:30:42 -07001002 ocfs2_inode_unlock(inode2, 1);
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001003
Mark Fashehccd979b2005-12-15 14:31:24 -08001004 if (status != -ENOENT)
1005 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001006 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001007
Mark Fashehccd979b2005-12-15 14:31:24 -08001008bail:
1009 mlog_exit(status);
1010 return status;
1011}
1012
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001013static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2)
1014{
Mark Fashehe63aecb62007-10-18 15:30:42 -07001015 ocfs2_inode_unlock(inode1, 1);
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001016
1017 if (inode1 != inode2)
Mark Fashehe63aecb62007-10-18 15:30:42 -07001018 ocfs2_inode_unlock(inode2, 1);
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001019}
1020
Mark Fashehccd979b2005-12-15 14:31:24 -08001021static int ocfs2_rename(struct inode *old_dir,
1022 struct dentry *old_dentry,
1023 struct inode *new_dir,
1024 struct dentry *new_dentry)
1025{
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001026 int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0;
1027 int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08001028 struct inode *old_inode = old_dentry->d_inode;
1029 struct inode *new_inode = new_dentry->d_inode;
Mark Fasheh5098c272006-10-05 18:12:57 -07001030 struct inode *orphan_dir = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001031 struct ocfs2_dinode *newfe = NULL;
1032 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
Mark Fashehccd979b2005-12-15 14:31:24 -08001033 struct buffer_head *newfe_bh = NULL;
Mark Fasheh592282c2007-01-02 17:59:40 -08001034 struct buffer_head *old_inode_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001035 struct ocfs2_super *osb = NULL;
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001036 u64 newfe_blkno, old_de_ino;
Mark Fasheh1fabe142006-10-09 18:11:45 -07001037 handle_t *handle = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001038 struct buffer_head *old_dir_bh = NULL;
1039 struct buffer_head *new_dir_bh = NULL;
Mark Fasheh592282c2007-01-02 17:59:40 -08001040 nlink_t old_dir_nlink = old_dir->i_nlink;
Sunil Mushran480214d2007-08-06 15:11:56 -07001041 struct ocfs2_dinode *old_di;
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001042 struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, };
1043 struct ocfs2_dir_lookup_result target_lookup_res = { NULL, };
1044 struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, };
1045 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
1046 struct ocfs2_dir_lookup_result target_insert = { NULL, };
Mark Fashehccd979b2005-12-15 14:31:24 -08001047
1048 /* At some point it might be nice to break this function up a
1049 * bit. */
1050
1051 mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p, from='%.*s' to='%.*s')\n",
1052 old_dir, old_dentry, new_dir, new_dentry,
1053 old_dentry->d_name.len, old_dentry->d_name.name,
1054 new_dentry->d_name.len, new_dentry->d_name.name);
1055
Christoph Hellwig871a2932010-03-03 09:05:07 -05001056 dquot_initialize(old_dir);
1057 dquot_initialize(new_dir);
Christoph Hellwig907f4552010-03-03 09:05:06 -05001058
Mark Fashehccd979b2005-12-15 14:31:24 -08001059 osb = OCFS2_SB(old_dir->i_sb);
1060
1061 if (new_inode) {
1062 if (!igrab(new_inode))
1063 BUG();
1064 }
1065
Uwe Kleine-König1b3c3712007-02-17 19:23:03 +01001066 /* Assume a directory hierarchy thusly:
Mark Fashehccd979b2005-12-15 14:31:24 -08001067 * a/b/c
1068 * a/d
1069 * a,b,c, and d are all directories.
1070 *
1071 * from cwd of 'a' on both nodes:
1072 * node1: mv b/c d
1073 * node2: mv d b/c
1074 *
1075 * And that's why, just like the VFS, we need a file system
1076 * rename lock. */
Jan Kara5dabd692008-02-21 18:00:00 +01001077 if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001078 status = ocfs2_rename_lock(osb);
1079 if (status < 0) {
1080 mlog_errno(status);
1081 goto bail;
1082 }
1083 rename_lock = 1;
1084 }
1085
Mark Fashehccd979b2005-12-15 14:31:24 -08001086 /* if old and new are the same, this'll just do one lock. */
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001087 status = ocfs2_double_lock(osb, &old_dir_bh, old_dir,
1088 &new_dir_bh, new_dir);
Mark Fashehccd979b2005-12-15 14:31:24 -08001089 if (status < 0) {
1090 mlog_errno(status);
1091 goto bail;
1092 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001093 parents_locked = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001094
1095 /* make sure both dirs have bhs
1096 * get an extra ref on old_dir_bh if old==new */
1097 if (!new_dir_bh) {
1098 if (old_dir_bh) {
1099 new_dir_bh = old_dir_bh;
1100 get_bh(new_dir_bh);
1101 } else {
1102 mlog(ML_ERROR, "no old_dir_bh!\n");
1103 status = -EIO;
1104 goto bail;
1105 }
1106 }
1107
Mark Fasheh379dfe92006-09-08 14:21:03 -07001108 /*
Mark Fasheh592282c2007-01-02 17:59:40 -08001109 * Aside from allowing a meta data update, the locking here
Mark Fasheh34d024f2007-09-24 15:56:19 -07001110 * also ensures that the downconvert thread on other nodes
1111 * won't have to concurrently downconvert the inode and the
1112 * dentry locks.
Mark Fasheh379dfe92006-09-08 14:21:03 -07001113 */
Jan Karacb257972009-06-04 15:26:50 +02001114 status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1,
1115 OI_LS_PARENT);
Mark Fasheh379dfe92006-09-08 14:21:03 -07001116 if (status < 0) {
1117 if (status != -ENOENT)
Mark Fashehccd979b2005-12-15 14:31:24 -08001118 mlog_errno(status);
Mark Fasheh379dfe92006-09-08 14:21:03 -07001119 goto bail;
1120 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001121 old_child_locked = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001122
Mark Fasheh379dfe92006-09-08 14:21:03 -07001123 status = ocfs2_remote_dentry_delete(old_dentry);
1124 if (status < 0) {
1125 mlog_errno(status);
1126 goto bail;
1127 }
1128
1129 if (S_ISDIR(old_inode->i_mode)) {
Mark Fasheh38760e22007-09-11 17:21:56 -07001130 u64 old_inode_parent;
Mark Fashehccd979b2005-12-15 14:31:24 -08001131
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001132 update_dot_dot = 1;
Mark Fasheh38760e22007-09-11 17:21:56 -07001133 status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001134 old_inode,
1135 &old_inode_dot_dot_res);
Mark Fasheh38760e22007-09-11 17:21:56 -07001136 if (status) {
1137 status = -EIO;
Mark Fashehccd979b2005-12-15 14:31:24 -08001138 goto bail;
Mark Fasheh38760e22007-09-11 17:21:56 -07001139 }
1140
1141 if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) {
1142 status = -EIO;
Mark Fashehccd979b2005-12-15 14:31:24 -08001143 goto bail;
Mark Fasheh38760e22007-09-11 17:21:56 -07001144 }
1145
1146 if (!new_inode && new_dir != old_dir &&
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001147 new_dir->i_nlink >= ocfs2_link_max(osb)) {
Mark Fasheh38760e22007-09-11 17:21:56 -07001148 status = -EMLINK;
1149 goto bail;
1150 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001151 }
1152
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001153 status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name,
1154 old_dentry->d_name.len,
1155 &old_de_ino);
1156 if (status) {
1157 status = -ENOENT;
Mark Fashehccd979b2005-12-15 14:31:24 -08001158 goto bail;
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001159 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001160
1161 /*
1162 * Check for inode number is _not_ due to possible IO errors.
1163 * We might rmdir the source, keep it as pwd of some process
1164 * and merrily kill the link to whatever was created under the
1165 * same name. Goodbye sticky bit ;-<
1166 */
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001167 if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) {
1168 status = -ENOENT;
Mark Fashehccd979b2005-12-15 14:31:24 -08001169 goto bail;
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001170 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001171
1172 /* check if the target already exists (in which case we need
1173 * to delete it */
1174 status = ocfs2_find_files_on_disk(new_dentry->d_name.name,
1175 new_dentry->d_name.len,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001176 &newfe_blkno, new_dir,
1177 &target_lookup_res);
Mark Fashehccd979b2005-12-15 14:31:24 -08001178 /* The only error we allow here is -ENOENT because the new
1179 * file not existing is perfectly valid. */
1180 if ((status < 0) && (status != -ENOENT)) {
1181 /* If we cannot find the file specified we should just */
1182 /* return the error... */
1183 mlog_errno(status);
1184 goto bail;
1185 }
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001186 if (status == 0)
1187 target_exists = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001188
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001189 if (!target_exists && new_inode) {
Srinivas Eedae325a882007-10-31 16:49:43 -07001190 /*
1191 * Target was unlinked by another node while we were
1192 * waiting to get to ocfs2_rename(). There isn't
1193 * anything we can do here to help the situation, so
1194 * bubble up the appropriate error.
1195 */
1196 status = -ENOENT;
1197 goto bail;
1198 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001199
1200 /* In case we need to overwrite an existing file, we blow it
1201 * away first */
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001202 if (target_exists) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001203 /* VFS didn't think there existed an inode here, but
1204 * someone else in the cluster must have raced our
1205 * rename to create one. Today we error cleanly, in
1206 * the future we should consider calling iget to build
1207 * a new struct inode for this entry. */
1208 if (!new_inode) {
1209 status = -EACCES;
1210
1211 mlog(0, "We found an inode for name %.*s but VFS "
1212 "didn't give us one.\n", new_dentry->d_name.len,
1213 new_dentry->d_name.name);
1214 goto bail;
1215 }
1216
1217 if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) {
1218 status = -EACCES;
1219
Mark Fashehb06970532006-03-03 10:24:33 -08001220 mlog(0, "Inode %llu and dir %llu disagree. flags = %x\n",
1221 (unsigned long long)OCFS2_I(new_inode)->ip_blkno,
1222 (unsigned long long)newfe_blkno,
Mark Fashehccd979b2005-12-15 14:31:24 -08001223 OCFS2_I(new_inode)->ip_flags);
1224 goto bail;
1225 }
1226
Mark Fashehe63aecb62007-10-18 15:30:42 -07001227 status = ocfs2_inode_lock(new_inode, &newfe_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001228 if (status < 0) {
1229 if (status != -ENOENT)
1230 mlog_errno(status);
1231 goto bail;
1232 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001233 new_child_locked = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001234
Mark Fasheh379dfe92006-09-08 14:21:03 -07001235 status = ocfs2_remote_dentry_delete(new_dentry);
Mark Fashehccd979b2005-12-15 14:31:24 -08001236 if (status < 0) {
1237 mlog_errno(status);
1238 goto bail;
1239 }
1240
1241 newfe = (struct ocfs2_dinode *) newfe_bh->b_data;
1242
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001243 mlog(0, "aha rename over existing... new_blkno=%llu "
1244 "newfebh=%p bhblocknr=%llu\n",
Mark Fashehb06970532006-03-03 10:24:33 -08001245 (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ?
Mark Fashehccd979b2005-12-15 14:31:24 -08001246 (unsigned long long)newfe_bh->b_blocknr : 0ULL);
1247
1248 if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) {
Mark Fasheh5098c272006-10-05 18:12:57 -07001249 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
Tao Ma19bd3412009-08-18 11:44:10 +08001250 OCFS2_I(new_inode)->ip_blkno,
1251 orphan_name, &orphan_insert);
Mark Fashehccd979b2005-12-15 14:31:24 -08001252 if (status < 0) {
1253 mlog_errno(status);
1254 goto bail;
1255 }
1256 }
1257 } else {
1258 BUG_ON(new_dentry->d_parent->d_inode != new_dir);
1259
1260 status = ocfs2_check_dir_for_entry(new_dir,
1261 new_dentry->d_name.name,
1262 new_dentry->d_name.len);
1263 if (status)
1264 goto bail;
1265
1266 status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh,
1267 new_dentry->d_name.name,
1268 new_dentry->d_name.len,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001269 &target_insert);
Mark Fashehccd979b2005-12-15 14:31:24 -08001270 if (status < 0) {
1271 mlog_errno(status);
1272 goto bail;
1273 }
1274 }
1275
Jan Karaa90714c2008-10-09 19:38:40 +02001276 handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb));
Mark Fashehccd979b2005-12-15 14:31:24 -08001277 if (IS_ERR(handle)) {
1278 status = PTR_ERR(handle);
1279 handle = NULL;
1280 mlog_errno(status);
1281 goto bail;
1282 }
1283
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001284 if (target_exists) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001285 if (S_ISDIR(new_inode->i_mode)) {
Mark Fashehb80b5492009-02-18 11:41:38 -08001286 if (new_inode->i_nlink != 2 ||
1287 !ocfs2_empty_dir(new_inode)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001288 status = -ENOTEMPTY;
1289 goto bail;
1290 }
1291 }
Joel Becker0cf2f762009-02-12 16:41:25 -08001292 status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode),
1293 newfe_bh,
Joel Becker13723d02008-10-17 19:25:01 -07001294 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -08001295 if (status < 0) {
1296 mlog_errno(status);
1297 goto bail;
1298 }
1299
1300 if (S_ISDIR(new_inode->i_mode) ||
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001301 (ocfs2_read_links_count(newfe) == 1)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001302 status = ocfs2_orphan_add(osb, handle, new_inode,
Tristan Ye3939fda2010-03-19 09:21:09 +08001303 newfe_bh, orphan_name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001304 &orphan_insert, orphan_dir);
Mark Fashehccd979b2005-12-15 14:31:24 -08001305 if (status < 0) {
1306 mlog_errno(status);
1307 goto bail;
1308 }
1309 }
1310
1311 /* change the dirent to point to the correct inode */
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001312 status = ocfs2_update_entry(new_dir, handle, &target_lookup_res,
1313 old_inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001314 if (status < 0) {
1315 mlog_errno(status);
1316 goto bail;
1317 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001318 new_dir->i_version++;
Mark Fashehccd979b2005-12-15 14:31:24 -08001319
1320 if (S_ISDIR(new_inode->i_mode))
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001321 ocfs2_set_links_count(newfe, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001322 else
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001323 ocfs2_add_links_count(newfe, -1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001324
1325 status = ocfs2_journal_dirty(handle, newfe_bh);
1326 if (status < 0) {
1327 mlog_errno(status);
1328 goto bail;
1329 }
1330 } else {
1331 /* if the name was not found in new_dir, add it now */
1332 status = ocfs2_add_entry(handle, new_dentry, old_inode,
1333 OCFS2_I(old_inode)->ip_blkno,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001334 new_dir_bh, &target_insert);
Mark Fashehccd979b2005-12-15 14:31:24 -08001335 }
1336
1337 old_inode->i_ctime = CURRENT_TIME;
1338 mark_inode_dirty(old_inode);
Sunil Mushran480214d2007-08-06 15:11:56 -07001339
Joel Becker0cf2f762009-02-12 16:41:25 -08001340 status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode),
1341 old_inode_bh,
Joel Becker13723d02008-10-17 19:25:01 -07001342 OCFS2_JOURNAL_ACCESS_WRITE);
Sunil Mushran480214d2007-08-06 15:11:56 -07001343 if (status >= 0) {
1344 old_di = (struct ocfs2_dinode *) old_inode_bh->b_data;
1345
1346 old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec);
1347 old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec);
1348
1349 status = ocfs2_journal_dirty(handle, old_inode_bh);
1350 if (status < 0)
1351 mlog_errno(status);
1352 } else
1353 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001354
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001355 /*
1356 * Now that the name has been added to new_dir, remove the old name.
1357 *
1358 * We don't keep any directory entry context around until now
1359 * because the insert might have changed the type of directory
1360 * we're dealing with.
1361 */
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001362 status = ocfs2_find_entry(old_dentry->d_name.name,
1363 old_dentry->d_name.len, old_dir,
1364 &old_entry_lookup);
1365 if (status)
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001366 goto bail;
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001367
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001368 status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08001369 if (status < 0) {
1370 mlog_errno(status);
1371 goto bail;
1372 }
1373
1374 if (new_inode) {
1375 new_inode->i_nlink--;
1376 new_inode->i_ctime = CURRENT_TIME;
1377 }
1378 old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME;
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001379
1380 if (update_dot_dot) {
1381 status = ocfs2_update_entry(old_inode, handle,
1382 &old_inode_dot_dot_res, new_dir);
Mark Fashehccd979b2005-12-15 14:31:24 -08001383 old_dir->i_nlink--;
1384 if (new_inode) {
1385 new_inode->i_nlink--;
1386 } else {
Dave Hansend8c76e62006-09-30 23:29:04 -07001387 inc_nlink(new_dir);
Mark Fashehccd979b2005-12-15 14:31:24 -08001388 mark_inode_dirty(new_dir);
1389 }
1390 }
1391 mark_inode_dirty(old_dir);
Mark Fasheh592282c2007-01-02 17:59:40 -08001392 ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh);
1393 if (new_inode) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001394 mark_inode_dirty(new_inode);
Mark Fasheh592282c2007-01-02 17:59:40 -08001395 ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh);
1396 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001397
Mark Fasheh592282c2007-01-02 17:59:40 -08001398 if (old_dir != new_dir) {
1399 /* Keep the same times on both directories.*/
1400 new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime;
1401
1402 /*
1403 * This will also pick up the i_nlink change from the
1404 * block above.
1405 */
1406 ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh);
1407 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001408
1409 if (old_dir_nlink != old_dir->i_nlink) {
1410 if (!old_dir_bh) {
1411 mlog(ML_ERROR, "need to change nlink for old dir "
Mark Fashehb06970532006-03-03 10:24:33 -08001412 "%llu from %d to %d but bh is NULL!\n",
1413 (unsigned long long)OCFS2_I(old_dir)->ip_blkno,
1414 (int)old_dir_nlink, old_dir->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -08001415 } else {
1416 struct ocfs2_dinode *fe;
Joel Becker0cf2f762009-02-12 16:41:25 -08001417 status = ocfs2_journal_access_di(handle,
1418 INODE_CACHE(old_dir),
1419 old_dir_bh,
1420 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -08001421 fe = (struct ocfs2_dinode *) old_dir_bh->b_data;
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001422 ocfs2_set_links_count(fe, old_dir->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -08001423 status = ocfs2_journal_dirty(handle, old_dir_bh);
1424 }
1425 }
Mark Fasheh379dfe92006-09-08 14:21:03 -07001426 ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir);
Mark Fashehccd979b2005-12-15 14:31:24 -08001427 status = 0;
1428bail:
1429 if (rename_lock)
1430 ocfs2_rename_unlock(osb);
1431
1432 if (handle)
Mark Fasheh02dc1af2006-10-09 16:48:10 -07001433 ocfs2_commit_trans(osb, handle);
Mark Fashehccd979b2005-12-15 14:31:24 -08001434
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001435 if (parents_locked)
1436 ocfs2_double_unlock(old_dir, new_dir);
1437
1438 if (old_child_locked)
Mark Fashehe63aecb62007-10-18 15:30:42 -07001439 ocfs2_inode_unlock(old_inode, 1);
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001440
1441 if (new_child_locked)
Mark Fashehe63aecb62007-10-18 15:30:42 -07001442 ocfs2_inode_unlock(new_inode, 1);
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001443
Mark Fasheh5098c272006-10-05 18:12:57 -07001444 if (orphan_dir) {
1445 /* This was locked for us in ocfs2_prepare_orphan_dir() */
Mark Fashehe63aecb62007-10-18 15:30:42 -07001446 ocfs2_inode_unlock(orphan_dir, 1);
Mark Fasheh5098c272006-10-05 18:12:57 -07001447 mutex_unlock(&orphan_dir->i_mutex);
1448 iput(orphan_dir);
1449 }
1450
Mark Fashehccd979b2005-12-15 14:31:24 -08001451 if (new_inode)
1452 sync_mapping_buffers(old_inode->i_mapping);
1453
1454 if (new_inode)
1455 iput(new_inode);
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001456
1457 ocfs2_free_dir_lookup_result(&target_lookup_res);
1458 ocfs2_free_dir_lookup_result(&old_entry_lookup);
1459 ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res);
1460 ocfs2_free_dir_lookup_result(&orphan_insert);
1461 ocfs2_free_dir_lookup_result(&target_insert);
1462
Mark Fasheha81cb882008-10-07 14:25:16 -07001463 brelse(newfe_bh);
1464 brelse(old_inode_bh);
1465 brelse(old_dir_bh);
1466 brelse(new_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08001467
1468 mlog_exit(status);
1469
1470 return status;
1471}
1472
1473/*
1474 * we expect i_size = strlen(symname). Copy symname into the file
1475 * data, including the null terminator.
1476 */
1477static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
Mark Fasheh1fabe142006-10-09 18:11:45 -07001478 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -08001479 struct inode *inode,
1480 const char *symname)
1481{
1482 struct buffer_head **bhs = NULL;
1483 const char *c;
1484 struct super_block *sb = osb->sb;
Mark Fasheh4f902c32007-03-09 16:26:50 -08001485 u64 p_blkno, p_blocks;
Mark Fashehccd979b2005-12-15 14:31:24 -08001486 int virtual, blocks, status, i, bytes_left;
1487
1488 bytes_left = i_size_read(inode) + 1;
1489 /* we can't trust i_blocks because we're actually going to
1490 * write i_size + 1 bytes. */
1491 blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
1492
Andrew Morton5515eff2006-03-26 01:37:53 -08001493 mlog_entry("i_blocks = %llu, i_size = %llu, blocks = %d\n",
1494 (unsigned long long)inode->i_blocks,
1495 i_size_read(inode), blocks);
Mark Fashehccd979b2005-12-15 14:31:24 -08001496
1497 /* Sanity check -- make sure we're going to fit. */
1498 if (bytes_left >
1499 ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) {
1500 status = -EIO;
1501 mlog_errno(status);
1502 goto bail;
1503 }
1504
1505 bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL);
1506 if (!bhs) {
1507 status = -ENOMEM;
1508 mlog_errno(status);
1509 goto bail;
1510 }
1511
Mark Fasheh49cb8d22007-03-09 16:21:46 -08001512 status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks,
1513 NULL);
Mark Fashehccd979b2005-12-15 14:31:24 -08001514 if (status < 0) {
1515 mlog_errno(status);
1516 goto bail;
1517 }
1518
1519 /* links can never be larger than one cluster so we know this
1520 * is all going to be contiguous, but do a sanity check
1521 * anyway. */
1522 if ((p_blocks << sb->s_blocksize_bits) < bytes_left) {
1523 status = -EIO;
1524 mlog_errno(status);
1525 goto bail;
1526 }
1527
1528 virtual = 0;
1529 while(bytes_left > 0) {
1530 c = &symname[virtual * sb->s_blocksize];
1531
1532 bhs[virtual] = sb_getblk(sb, p_blkno);
1533 if (!bhs[virtual]) {
1534 status = -ENOMEM;
1535 mlog_errno(status);
1536 goto bail;
1537 }
Joel Becker8cb471e2009-02-10 20:00:41 -08001538 ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode),
1539 bhs[virtual]);
Mark Fashehccd979b2005-12-15 14:31:24 -08001540
Joel Becker0cf2f762009-02-12 16:41:25 -08001541 status = ocfs2_journal_access(handle, INODE_CACHE(inode),
1542 bhs[virtual],
Mark Fashehccd979b2005-12-15 14:31:24 -08001543 OCFS2_JOURNAL_ACCESS_CREATE);
1544 if (status < 0) {
1545 mlog_errno(status);
1546 goto bail;
1547 }
1548
1549 memset(bhs[virtual]->b_data, 0, sb->s_blocksize);
1550
1551 memcpy(bhs[virtual]->b_data, c,
1552 (bytes_left > sb->s_blocksize) ? sb->s_blocksize :
1553 bytes_left);
1554
1555 status = ocfs2_journal_dirty(handle, bhs[virtual]);
1556 if (status < 0) {
1557 mlog_errno(status);
1558 goto bail;
1559 }
1560
1561 virtual++;
1562 p_blkno++;
1563 bytes_left -= sb->s_blocksize;
1564 }
1565
1566 status = 0;
1567bail:
1568
1569 if (bhs) {
1570 for(i = 0; i < blocks; i++)
Mark Fasheha81cb882008-10-07 14:25:16 -07001571 brelse(bhs[i]);
Mark Fashehccd979b2005-12-15 14:31:24 -08001572 kfree(bhs);
1573 }
1574
1575 mlog_exit(status);
1576 return status;
1577}
1578
1579static int ocfs2_symlink(struct inode *dir,
1580 struct dentry *dentry,
1581 const char *symname)
1582{
1583 int status, l, credits;
1584 u64 newsize;
1585 struct ocfs2_super *osb = NULL;
1586 struct inode *inode = NULL;
1587 struct super_block *sb;
1588 struct buffer_head *new_fe_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001589 struct buffer_head *parent_fe_bh = NULL;
1590 struct ocfs2_dinode *fe = NULL;
1591 struct ocfs2_dinode *dirfe;
Mark Fasheh1fabe142006-10-09 18:11:45 -07001592 handle_t *handle = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001593 struct ocfs2_alloc_context *inode_ac = NULL;
1594 struct ocfs2_alloc_context *data_ac = NULL;
Tiger Yang534eadd2008-11-14 11:16:41 +08001595 struct ocfs2_alloc_context *xattr_ac = NULL;
1596 int want_clusters = 0;
1597 int xattr_credits = 0;
1598 struct ocfs2_security_xattr_info si = {
1599 .enable = 1,
1600 };
Jan Karaa90714c2008-10-09 19:38:40 +02001601 int did_quota = 0, did_quota_inode = 0;
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001602 struct ocfs2_dir_lookup_result lookup = { NULL, };
Mark Fashehccd979b2005-12-15 14:31:24 -08001603
1604 mlog_entry("(0x%p, 0x%p, symname='%s' actual='%.*s')\n", dir,
1605 dentry, symname, dentry->d_name.len, dentry->d_name.name);
1606
Christoph Hellwig871a2932010-03-03 09:05:07 -05001607 dquot_initialize(dir);
Christoph Hellwig907f4552010-03-03 09:05:06 -05001608
Mark Fashehccd979b2005-12-15 14:31:24 -08001609 sb = dir->i_sb;
1610 osb = OCFS2_SB(sb);
1611
1612 l = strlen(symname) + 1;
1613
1614 credits = ocfs2_calc_symlink_credits(sb);
1615
Mark Fashehccd979b2005-12-15 14:31:24 -08001616 /* lock the parent directory */
Mark Fashehe63aecb62007-10-18 15:30:42 -07001617 status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001618 if (status < 0) {
1619 if (status != -ENOENT)
1620 mlog_errno(status);
Mark Fasheh6d8fc402006-10-06 11:54:33 -07001621 return status;
Mark Fashehccd979b2005-12-15 14:31:24 -08001622 }
1623
1624 dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001625 if (!ocfs2_read_links_count(dirfe)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001626 /* can't make a file in a deleted directory. */
1627 status = -ENOENT;
1628 goto bail;
1629 }
1630
1631 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
1632 dentry->d_name.len);
1633 if (status)
1634 goto bail;
1635
1636 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
1637 dentry->d_name.name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001638 dentry->d_name.len, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08001639 if (status < 0) {
1640 mlog_errno(status);
1641 goto bail;
1642 }
1643
Mark Fashehda5cbf22006-10-06 18:34:35 -07001644 status = ocfs2_reserve_new_inode(osb, &inode_ac);
Mark Fashehccd979b2005-12-15 14:31:24 -08001645 if (status < 0) {
1646 if (status != -ENOSPC)
1647 mlog_errno(status);
1648 goto bail;
1649 }
1650
Tiger Yangf5d36202008-11-14 11:15:44 +08001651 inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO);
1652 if (!inode) {
1653 status = -ENOMEM;
1654 mlog_errno(status);
1655 goto bail;
1656 }
1657
Tiger Yang534eadd2008-11-14 11:16:41 +08001658 /* get security xattr */
1659 status = ocfs2_init_security_get(inode, dir, &si);
1660 if (status) {
1661 if (status == -EOPNOTSUPP)
1662 si.enable = 0;
1663 else {
1664 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001665 goto bail;
1666 }
1667 }
1668
Tiger Yang534eadd2008-11-14 11:16:41 +08001669 /* calculate meta data/clusters for setting security xattr */
1670 if (si.enable) {
1671 status = ocfs2_calc_security_init(dir, &si, &want_clusters,
1672 &xattr_credits, &xattr_ac);
1673 if (status < 0) {
1674 mlog_errno(status);
1675 goto bail;
1676 }
1677 }
1678
1679 /* don't reserve bitmap space for fast symlinks. */
1680 if (l > ocfs2_fast_symlink_chars(sb))
1681 want_clusters += 1;
1682
1683 status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
1684 if (status < 0) {
1685 if (status != -ENOSPC)
1686 mlog_errno(status);
1687 goto bail;
1688 }
1689
1690 handle = ocfs2_start_trans(osb, credits + xattr_credits);
Mark Fashehccd979b2005-12-15 14:31:24 -08001691 if (IS_ERR(handle)) {
1692 status = PTR_ERR(handle);
1693 handle = NULL;
1694 mlog_errno(status);
1695 goto bail;
1696 }
1697
Christoph Hellwig63936dd2010-03-03 09:05:01 -05001698 status = dquot_alloc_inode(inode);
1699 if (status)
Jan Karaa90714c2008-10-09 19:38:40 +02001700 goto bail;
Jan Karaa90714c2008-10-09 19:38:40 +02001701 did_quota_inode = 1;
1702
Tao Ma19bd3412009-08-18 11:44:10 +08001703 mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry,
1704 inode->i_mode, dentry->d_name.len,
1705 dentry->d_name.name);
1706
1707 status = ocfs2_mknod_locked(osb, dir, inode,
Tiger Yangf5d36202008-11-14 11:15:44 +08001708 0, &new_fe_bh, parent_fe_bh, handle,
1709 inode_ac);
Mark Fashehccd979b2005-12-15 14:31:24 -08001710 if (status < 0) {
1711 mlog_errno(status);
1712 goto bail;
1713 }
1714
1715 fe = (struct ocfs2_dinode *) new_fe_bh->b_data;
1716 inode->i_rdev = 0;
1717 newsize = l - 1;
1718 if (l > ocfs2_fast_symlink_chars(sb)) {
Mark Fashehdcd05382007-01-16 11:32:23 -08001719 u32 offset = 0;
1720
Mark Fashehccd979b2005-12-15 14:31:24 -08001721 inode->i_op = &ocfs2_symlink_inode_operations;
Christoph Hellwig5dd40562010-03-03 09:05:00 -05001722 status = dquot_alloc_space_nodirty(inode,
1723 ocfs2_clusters_to_bytes(osb->sb, 1));
1724 if (status)
Jan Karaa90714c2008-10-09 19:38:40 +02001725 goto bail;
Jan Karaa90714c2008-10-09 19:38:40 +02001726 did_quota = 1;
Tao Ma0eb8d472008-08-18 17:38:45 +08001727 status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0,
1728 new_fe_bh,
1729 handle, data_ac, NULL,
1730 NULL);
Mark Fashehccd979b2005-12-15 14:31:24 -08001731 if (status < 0) {
1732 if (status != -ENOSPC && status != -EINTR) {
Mark Fashehb06970532006-03-03 10:24:33 -08001733 mlog(ML_ERROR,
1734 "Failed to extend file to %llu\n",
1735 (unsigned long long)newsize);
Mark Fashehccd979b2005-12-15 14:31:24 -08001736 mlog_errno(status);
1737 status = -ENOSPC;
1738 }
1739 goto bail;
1740 }
1741 i_size_write(inode, newsize);
Mark Fasheh8110b072007-03-22 16:53:23 -07001742 inode->i_blocks = ocfs2_inode_sector_count(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001743 } else {
1744 inode->i_op = &ocfs2_fast_symlink_inode_operations;
1745 memcpy((char *) fe->id2.i_symlink, symname, l);
1746 i_size_write(inode, newsize);
1747 inode->i_blocks = 0;
1748 }
1749
1750 status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh);
1751 if (status < 0) {
1752 mlog_errno(status);
1753 goto bail;
1754 }
1755
1756 if (!ocfs2_inode_is_fast_symlink(inode)) {
1757 status = ocfs2_create_symlink_data(osb, handle, inode,
1758 symname);
1759 if (status < 0) {
1760 mlog_errno(status);
1761 goto bail;
1762 }
1763 }
1764
Tiger Yang534eadd2008-11-14 11:16:41 +08001765 if (si.enable) {
1766 status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
1767 xattr_ac, data_ac);
1768 if (status < 0) {
1769 mlog_errno(status);
1770 goto bail;
1771 }
1772 }
1773
Mark Fashehccd979b2005-12-15 14:31:24 -08001774 status = ocfs2_add_entry(handle, dentry, inode,
1775 le64_to_cpu(fe->i_blkno), parent_fe_bh,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001776 &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08001777 if (status < 0) {
1778 mlog_errno(status);
1779 goto bail;
1780 }
1781
Mark Fasheh0027dd52006-09-21 16:51:28 -07001782 status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
Mark Fasheh379dfe92006-09-08 14:21:03 -07001783 if (status) {
1784 mlog_errno(status);
1785 goto bail;
1786 }
1787
Mark Fashehccd979b2005-12-15 14:31:24 -08001788 insert_inode_hash(inode);
1789 dentry->d_op = &ocfs2_dentry_ops;
1790 d_instantiate(dentry, inode);
1791bail:
Jan Karaa90714c2008-10-09 19:38:40 +02001792 if (status < 0 && did_quota)
Christoph Hellwig5dd40562010-03-03 09:05:00 -05001793 dquot_free_space_nodirty(inode,
Jan Karaa90714c2008-10-09 19:38:40 +02001794 ocfs2_clusters_to_bytes(osb->sb, 1));
1795 if (status < 0 && did_quota_inode)
Christoph Hellwig63936dd2010-03-03 09:05:01 -05001796 dquot_free_inode(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001797 if (handle)
Mark Fasheh02dc1af2006-10-09 16:48:10 -07001798 ocfs2_commit_trans(osb, handle);
Mark Fasheh6d8fc402006-10-06 11:54:33 -07001799
Mark Fashehe63aecb62007-10-18 15:30:42 -07001800 ocfs2_inode_unlock(dir, 1);
Mark Fasheh6d8fc402006-10-06 11:54:33 -07001801
Mark Fasheha81cb882008-10-07 14:25:16 -07001802 brelse(new_fe_bh);
1803 brelse(parent_fe_bh);
Tiger Yang534eadd2008-11-14 11:16:41 +08001804 kfree(si.name);
1805 kfree(si.value);
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001806 ocfs2_free_dir_lookup_result(&lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08001807 if (inode_ac)
1808 ocfs2_free_alloc_context(inode_ac);
1809 if (data_ac)
1810 ocfs2_free_alloc_context(data_ac);
Tiger Yang534eadd2008-11-14 11:16:41 +08001811 if (xattr_ac)
1812 ocfs2_free_alloc_context(xattr_ac);
Tiger Yangf5d36202008-11-14 11:15:44 +08001813 if ((status < 0) && inode) {
1814 clear_nlink(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001815 iput(inode);
Tiger Yangf5d36202008-11-14 11:15:44 +08001816 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001817
1818 mlog_exit(status);
1819
1820 return status;
1821}
1822
Mark Fashehccd979b2005-12-15 14:31:24 -08001823static int ocfs2_blkno_stringify(u64 blkno, char *name)
1824{
1825 int status, namelen;
1826
1827 mlog_entry_void();
1828
Mark Fashehb06970532006-03-03 10:24:33 -08001829 namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx",
1830 (long long)blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001831 if (namelen <= 0) {
1832 if (namelen)
1833 status = namelen;
1834 else
1835 status = -EINVAL;
1836 mlog_errno(status);
1837 goto bail;
1838 }
1839 if (namelen != OCFS2_ORPHAN_NAMELEN) {
1840 status = -EINVAL;
1841 mlog_errno(status);
1842 goto bail;
1843 }
1844
1845 mlog(0, "built filename '%s' for orphan dir (len=%d)\n", name,
1846 namelen);
1847
1848 status = 0;
1849bail:
1850 mlog_exit(status);
1851 return status;
1852}
1853
1854static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
Mark Fasheh5098c272006-10-05 18:12:57 -07001855 struct inode **ret_orphan_dir,
Tao Ma19bd3412009-08-18 11:44:10 +08001856 u64 blkno,
Mark Fashehccd979b2005-12-15 14:31:24 -08001857 char *name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001858 struct ocfs2_dir_lookup_result *lookup)
Mark Fashehccd979b2005-12-15 14:31:24 -08001859{
Mark Fasheh5098c272006-10-05 18:12:57 -07001860 struct inode *orphan_dir_inode;
Mark Fashehccd979b2005-12-15 14:31:24 -08001861 struct buffer_head *orphan_dir_bh = NULL;
1862 int status = 0;
1863
Tao Ma19bd3412009-08-18 11:44:10 +08001864 status = ocfs2_blkno_stringify(blkno, name);
Mark Fashehccd979b2005-12-15 14:31:24 -08001865 if (status < 0) {
1866 mlog_errno(status);
Mark Fasheh5098c272006-10-05 18:12:57 -07001867 return status;
Mark Fashehccd979b2005-12-15 14:31:24 -08001868 }
1869
1870 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
1871 ORPHAN_DIR_SYSTEM_INODE,
1872 osb->slot_num);
1873 if (!orphan_dir_inode) {
1874 status = -ENOENT;
1875 mlog_errno(status);
Mark Fasheh5098c272006-10-05 18:12:57 -07001876 return status;
Mark Fashehccd979b2005-12-15 14:31:24 -08001877 }
1878
Mark Fasheh5098c272006-10-05 18:12:57 -07001879 mutex_lock(&orphan_dir_inode->i_mutex);
1880
Mark Fashehe63aecb62007-10-18 15:30:42 -07001881 status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001882 if (status < 0) {
1883 mlog_errno(status);
1884 goto leave;
1885 }
1886
1887 status = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode,
1888 orphan_dir_bh, name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001889 OCFS2_ORPHAN_NAMELEN, lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08001890 if (status < 0) {
Mark Fashehe63aecb62007-10-18 15:30:42 -07001891 ocfs2_inode_unlock(orphan_dir_inode, 1);
Mark Fasheh5098c272006-10-05 18:12:57 -07001892
Mark Fashehccd979b2005-12-15 14:31:24 -08001893 mlog_errno(status);
1894 goto leave;
1895 }
1896
Mark Fasheh5098c272006-10-05 18:12:57 -07001897 *ret_orphan_dir = orphan_dir_inode;
1898
Mark Fashehccd979b2005-12-15 14:31:24 -08001899leave:
Mark Fasheh5098c272006-10-05 18:12:57 -07001900 if (status) {
1901 mutex_unlock(&orphan_dir_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -08001902 iput(orphan_dir_inode);
Mark Fasheh5098c272006-10-05 18:12:57 -07001903 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001904
Mark Fasheha81cb882008-10-07 14:25:16 -07001905 brelse(orphan_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08001906
1907 mlog_exit(status);
1908 return status;
1909}
1910
1911static int ocfs2_orphan_add(struct ocfs2_super *osb,
Mark Fasheh1fabe142006-10-09 18:11:45 -07001912 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -08001913 struct inode *inode,
Tristan Ye3939fda2010-03-19 09:21:09 +08001914 struct buffer_head *fe_bh,
Mark Fashehccd979b2005-12-15 14:31:24 -08001915 char *name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001916 struct ocfs2_dir_lookup_result *lookup,
Mark Fasheh5098c272006-10-05 18:12:57 -07001917 struct inode *orphan_dir_inode)
Mark Fashehccd979b2005-12-15 14:31:24 -08001918{
Mark Fashehccd979b2005-12-15 14:31:24 -08001919 struct buffer_head *orphan_dir_bh = NULL;
1920 int status = 0;
1921 struct ocfs2_dinode *orphan_fe;
Tristan Ye3939fda2010-03-19 09:21:09 +08001922 struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data;
Mark Fashehccd979b2005-12-15 14:31:24 -08001923
1924 mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino);
1925
Joel Beckerb657c952008-11-13 14:49:11 -08001926 status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08001927 if (status < 0) {
1928 mlog_errno(status);
1929 goto leave;
1930 }
1931
Joel Becker0cf2f762009-02-12 16:41:25 -08001932 status = ocfs2_journal_access_di(handle,
1933 INODE_CACHE(orphan_dir_inode),
1934 orphan_dir_bh,
Joel Becker13723d02008-10-17 19:25:01 -07001935 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -08001936 if (status < 0) {
1937 mlog_errno(status);
1938 goto leave;
1939 }
1940
1941 /* we're a cluster, and nlink can change on disk from
1942 * underneath us... */
1943 orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
1944 if (S_ISDIR(inode->i_mode))
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001945 ocfs2_add_links_count(orphan_fe, 1);
1946 orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe);
Mark Fashehccd979b2005-12-15 14:31:24 -08001947
1948 status = ocfs2_journal_dirty(handle, orphan_dir_bh);
1949 if (status < 0) {
1950 mlog_errno(status);
1951 goto leave;
1952 }
1953
1954 status = __ocfs2_add_entry(handle, orphan_dir_inode, name,
1955 OCFS2_ORPHAN_NAMELEN, inode,
1956 OCFS2_I(inode)->ip_blkno,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001957 orphan_dir_bh, lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08001958 if (status < 0) {
1959 mlog_errno(status);
1960 goto leave;
1961 }
1962
Tristan Ye3939fda2010-03-19 09:21:09 +08001963 /*
1964 * We're going to journal the change of i_flags and i_orphaned_slot.
1965 * It's safe anyway, though some callers may duplicate the journaling.
1966 * Journaling within the func just make the logic look more
1967 * straightforward.
1968 */
1969 status = ocfs2_journal_access_di(handle,
1970 INODE_CACHE(inode),
1971 fe_bh,
1972 OCFS2_JOURNAL_ACCESS_WRITE);
1973 if (status < 0) {
1974 mlog_errno(status);
1975 goto leave;
1976 }
1977
Mark Fashehccd979b2005-12-15 14:31:24 -08001978 le32_add_cpu(&fe->i_flags, OCFS2_ORPHANED_FL);
1979
1980 /* Record which orphan dir our inode now resides
1981 * in. delete_inode will use this to determine which orphan
1982 * dir to lock. */
Tiger Yang50008632007-03-20 16:01:38 -07001983 fe->i_orphaned_slot = cpu_to_le16(osb->slot_num);
Mark Fashehccd979b2005-12-15 14:31:24 -08001984
Tristan Ye3939fda2010-03-19 09:21:09 +08001985 ocfs2_journal_dirty(handle, fe_bh);
1986
Mark Fashehb06970532006-03-03 10:24:33 -08001987 mlog(0, "Inode %llu orphaned in slot %d\n",
1988 (unsigned long long)OCFS2_I(inode)->ip_blkno, osb->slot_num);
Mark Fashehccd979b2005-12-15 14:31:24 -08001989
1990leave:
Mark Fasheha81cb882008-10-07 14:25:16 -07001991 brelse(orphan_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08001992
1993 mlog_exit(status);
1994 return status;
1995}
1996
1997/* unlike orphan_add, we expect the orphan dir to already be locked here. */
1998int ocfs2_orphan_del(struct ocfs2_super *osb,
Mark Fasheh1fabe142006-10-09 18:11:45 -07001999 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -08002000 struct inode *orphan_dir_inode,
2001 struct inode *inode,
2002 struct buffer_head *orphan_dir_bh)
2003{
2004 char name[OCFS2_ORPHAN_NAMELEN + 1];
2005 struct ocfs2_dinode *orphan_fe;
2006 int status = 0;
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002007 struct ocfs2_dir_lookup_result lookup = { NULL, };
Mark Fashehccd979b2005-12-15 14:31:24 -08002008
2009 mlog_entry_void();
2010
2011 status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name);
2012 if (status < 0) {
2013 mlog_errno(status);
2014 goto leave;
2015 }
2016
Mark Fashehb06970532006-03-03 10:24:33 -08002017 mlog(0, "removing '%s' from orphan dir %llu (namelen=%d)\n",
2018 name, (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno,
2019 OCFS2_ORPHAN_NAMELEN);
Mark Fashehccd979b2005-12-15 14:31:24 -08002020
2021 /* find it's spot in the orphan directory */
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002022 status = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, orphan_dir_inode,
2023 &lookup);
2024 if (status) {
Mark Fashehccd979b2005-12-15 14:31:24 -08002025 mlog_errno(status);
2026 goto leave;
2027 }
2028
2029 /* remove it from the orphan directory */
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002030 status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08002031 if (status < 0) {
2032 mlog_errno(status);
2033 goto leave;
2034 }
2035
Joel Becker0cf2f762009-02-12 16:41:25 -08002036 status = ocfs2_journal_access_di(handle,
2037 INODE_CACHE(orphan_dir_inode),
2038 orphan_dir_bh,
Joel Becker13723d02008-10-17 19:25:01 -07002039 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -08002040 if (status < 0) {
2041 mlog_errno(status);
2042 goto leave;
2043 }
2044
2045 /* do the i_nlink dance! :) */
2046 orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
2047 if (S_ISDIR(inode->i_mode))
Mark Fasheh198a1ca2008-11-20 17:54:57 -08002048 ocfs2_add_links_count(orphan_fe, -1);
2049 orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe);
Mark Fashehccd979b2005-12-15 14:31:24 -08002050
2051 status = ocfs2_journal_dirty(handle, orphan_dir_bh);
2052 if (status < 0) {
2053 mlog_errno(status);
2054 goto leave;
2055 }
2056
2057leave:
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002058 ocfs2_free_dir_lookup_result(&lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08002059
2060 mlog_exit(status);
2061 return status;
2062}
2063
Tao Mabc13d342009-08-18 11:44:14 +08002064int ocfs2_create_inode_in_orphan(struct inode *dir,
2065 int mode,
2066 struct inode **new_inode)
2067{
2068 int status, did_quota_inode = 0;
2069 struct inode *inode = NULL;
2070 struct inode *orphan_dir = NULL;
2071 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
2072 struct ocfs2_dinode *di = NULL;
2073 handle_t *handle = NULL;
2074 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
2075 struct buffer_head *parent_di_bh = NULL;
2076 struct buffer_head *new_di_bh = NULL;
2077 struct ocfs2_alloc_context *inode_ac = NULL;
2078 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
2079
2080 status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
2081 if (status < 0) {
2082 if (status != -ENOENT)
2083 mlog_errno(status);
2084 return status;
2085 }
2086
2087 /*
2088 * We give the orphan dir the root blkno to fake an orphan name,
2089 * and allocate enough space for our insertion.
2090 */
2091 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
2092 osb->root_blkno,
2093 orphan_name, &orphan_insert);
2094 if (status < 0) {
2095 mlog_errno(status);
2096 goto leave;
2097 }
2098
2099 /* reserve an inode spot */
2100 status = ocfs2_reserve_new_inode(osb, &inode_ac);
2101 if (status < 0) {
2102 if (status != -ENOSPC)
2103 mlog_errno(status);
2104 goto leave;
2105 }
2106
2107 inode = ocfs2_get_init_inode(dir, mode);
2108 if (!inode) {
2109 status = -ENOMEM;
2110 mlog_errno(status);
2111 goto leave;
2112 }
2113
2114 handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0));
2115 if (IS_ERR(handle)) {
2116 status = PTR_ERR(handle);
2117 handle = NULL;
2118 mlog_errno(status);
2119 goto leave;
2120 }
2121
Christoph Hellwig63936dd2010-03-03 09:05:01 -05002122 status = dquot_alloc_inode(inode);
2123 if (status)
Tao Mabc13d342009-08-18 11:44:14 +08002124 goto leave;
Tao Mabc13d342009-08-18 11:44:14 +08002125 did_quota_inode = 1;
2126
Tao Ma10cf1a02009-12-18 10:24:55 +08002127 inode->i_nlink = 0;
Tao Mabc13d342009-08-18 11:44:14 +08002128 /* do the real work now. */
2129 status = ocfs2_mknod_locked(osb, dir, inode,
2130 0, &new_di_bh, parent_di_bh, handle,
2131 inode_ac);
2132 if (status < 0) {
2133 mlog_errno(status);
2134 goto leave;
2135 }
2136
2137 status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, orphan_name);
2138 if (status < 0) {
2139 mlog_errno(status);
2140 goto leave;
2141 }
2142
2143 di = (struct ocfs2_dinode *)new_di_bh->b_data;
Tristan Ye3939fda2010-03-19 09:21:09 +08002144 status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name,
Tao Mabc13d342009-08-18 11:44:14 +08002145 &orphan_insert, orphan_dir);
2146 if (status < 0) {
2147 mlog_errno(status);
2148 goto leave;
2149 }
2150
2151 /* get open lock so that only nodes can't remove it from orphan dir. */
2152 status = ocfs2_open_lock(inode);
2153 if (status < 0)
2154 mlog_errno(status);
2155
Tao Mac7d260a2009-12-18 10:24:54 +08002156 insert_inode_hash(inode);
Tao Mabc13d342009-08-18 11:44:14 +08002157leave:
2158 if (status < 0 && did_quota_inode)
Christoph Hellwig63936dd2010-03-03 09:05:01 -05002159 dquot_free_inode(inode);
Tao Mabc13d342009-08-18 11:44:14 +08002160 if (handle)
2161 ocfs2_commit_trans(osb, handle);
2162
2163 if (orphan_dir) {
2164 /* This was locked for us in ocfs2_prepare_orphan_dir() */
2165 ocfs2_inode_unlock(orphan_dir, 1);
2166 mutex_unlock(&orphan_dir->i_mutex);
2167 iput(orphan_dir);
2168 }
2169
2170 if (status == -ENOSPC)
2171 mlog(0, "Disk is full\n");
2172
2173 if ((status < 0) && inode) {
2174 clear_nlink(inode);
2175 iput(inode);
2176 }
2177
2178 if (inode_ac)
2179 ocfs2_free_alloc_context(inode_ac);
2180
2181 brelse(new_di_bh);
2182
2183 if (!status)
2184 *new_inode = inode;
2185
2186 ocfs2_free_dir_lookup_result(&orphan_insert);
2187
2188 ocfs2_inode_unlock(dir, 1);
2189 brelse(parent_di_bh);
2190 return status;
2191}
2192
2193int ocfs2_mv_orphaned_inode_to_new(struct inode *dir,
2194 struct inode *inode,
2195 struct dentry *dentry)
2196{
2197 int status = 0;
2198 struct buffer_head *parent_di_bh = NULL;
2199 handle_t *handle = NULL;
2200 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
2201 struct ocfs2_dinode *dir_di, *di;
2202 struct inode *orphan_dir_inode = NULL;
2203 struct buffer_head *orphan_dir_bh = NULL;
2204 struct buffer_head *di_bh = NULL;
2205 struct ocfs2_dir_lookup_result lookup = { NULL, };
2206
2207 mlog_entry("(0x%p, 0x%p, %.*s')\n", dir, dentry,
2208 dentry->d_name.len, dentry->d_name.name);
2209
2210 status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
2211 if (status < 0) {
2212 if (status != -ENOENT)
2213 mlog_errno(status);
2214 return status;
2215 }
2216
2217 dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data;
2218 if (!dir_di->i_links_count) {
2219 /* can't make a file in a deleted directory. */
2220 status = -ENOENT;
2221 goto leave;
2222 }
2223
2224 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
2225 dentry->d_name.len);
2226 if (status)
2227 goto leave;
2228
2229 /* get a spot inside the dir. */
2230 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh,
2231 dentry->d_name.name,
2232 dentry->d_name.len, &lookup);
2233 if (status < 0) {
2234 mlog_errno(status);
2235 goto leave;
2236 }
2237
2238 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
2239 ORPHAN_DIR_SYSTEM_INODE,
2240 osb->slot_num);
2241 if (!orphan_dir_inode) {
2242 status = -EEXIST;
2243 mlog_errno(status);
2244 goto leave;
2245 }
2246
2247 mutex_lock(&orphan_dir_inode->i_mutex);
2248
2249 status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
2250 if (status < 0) {
2251 mlog_errno(status);
2252 mutex_unlock(&orphan_dir_inode->i_mutex);
2253 iput(orphan_dir_inode);
2254 goto leave;
2255 }
2256
2257 status = ocfs2_read_inode_block(inode, &di_bh);
2258 if (status < 0) {
2259 mlog_errno(status);
2260 goto orphan_unlock;
2261 }
2262
2263 handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb));
2264 if (IS_ERR(handle)) {
2265 status = PTR_ERR(handle);
2266 handle = NULL;
2267 mlog_errno(status);
2268 goto orphan_unlock;
2269 }
2270
2271 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
2272 di_bh, OCFS2_JOURNAL_ACCESS_WRITE);
2273 if (status < 0) {
2274 mlog_errno(status);
2275 goto out_commit;
2276 }
2277
2278 status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode,
2279 orphan_dir_bh);
2280 if (status < 0) {
2281 mlog_errno(status);
2282 goto out_commit;
2283 }
2284
2285 di = (struct ocfs2_dinode *)di_bh->b_data;
2286 le32_add_cpu(&di->i_flags, -OCFS2_ORPHANED_FL);
2287 di->i_orphaned_slot = 0;
Tao Ma10cf1a02009-12-18 10:24:55 +08002288 inode->i_nlink = 1;
2289 ocfs2_set_links_count(di, inode->i_nlink);
Tao Mabc13d342009-08-18 11:44:14 +08002290 ocfs2_journal_dirty(handle, di_bh);
2291
2292 status = ocfs2_add_entry(handle, dentry, inode,
2293 OCFS2_I(inode)->ip_blkno, parent_di_bh,
2294 &lookup);
2295 if (status < 0) {
2296 mlog_errno(status);
2297 goto out_commit;
2298 }
2299
2300 status = ocfs2_dentry_attach_lock(dentry, inode,
2301 OCFS2_I(dir)->ip_blkno);
2302 if (status) {
2303 mlog_errno(status);
2304 goto out_commit;
2305 }
2306
Tao Mabc13d342009-08-18 11:44:14 +08002307 dentry->d_op = &ocfs2_dentry_ops;
2308 d_instantiate(dentry, inode);
2309 status = 0;
2310out_commit:
2311 ocfs2_commit_trans(osb, handle);
2312orphan_unlock:
2313 ocfs2_inode_unlock(orphan_dir_inode, 1);
2314 mutex_unlock(&orphan_dir_inode->i_mutex);
2315 iput(orphan_dir_inode);
2316leave:
2317
2318 ocfs2_inode_unlock(dir, 1);
2319
2320 brelse(di_bh);
2321 brelse(parent_di_bh);
2322 brelse(orphan_dir_bh);
2323
2324 ocfs2_free_dir_lookup_result(&lookup);
2325
2326 mlog_exit(status);
2327
2328 return status;
2329}
2330
Arjan van de Ven92e1d5b2007-02-12 00:55:39 -08002331const struct inode_operations ocfs2_dir_iops = {
Mark Fashehccd979b2005-12-15 14:31:24 -08002332 .create = ocfs2_create,
2333 .lookup = ocfs2_lookup,
2334 .link = ocfs2_link,
2335 .unlink = ocfs2_unlink,
2336 .rmdir = ocfs2_unlink,
2337 .symlink = ocfs2_symlink,
2338 .mkdir = ocfs2_mkdir,
2339 .mknod = ocfs2_mknod,
2340 .rename = ocfs2_rename,
2341 .setattr = ocfs2_setattr,
2342 .getattr = ocfs2_getattr,
Tiger Yangd38eb8d2006-11-27 09:59:21 +08002343 .permission = ocfs2_permission,
Tiger Yangcf1d6c72008-08-18 17:11:00 +08002344 .setxattr = generic_setxattr,
2345 .getxattr = generic_getxattr,
2346 .listxattr = ocfs2_listxattr,
2347 .removexattr = generic_removexattr,
Tristan Ye55f49462009-12-17 18:42:16 +08002348 .fiemap = ocfs2_fiemap,
Mark Fashehccd979b2005-12-15 14:31:24 -08002349};