blob: b931e04e33889742a6192255b3bd95d8779203ea [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
Mark Fashehccd979b2005-12-15 14:31:24 -080045#include <cluster/masklog.h>
46
47#include "ocfs2.h"
48
49#include "alloc.h"
50#include "dcache.h"
51#include "dir.h"
52#include "dlmglue.h"
53#include "extent_map.h"
54#include "file.h"
55#include "inode.h"
56#include "journal.h"
57#include "namei.h"
58#include "suballoc.h"
Mark Fashehaa958872006-04-21 13:49:02 -070059#include "super.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080060#include "symlink.h"
61#include "sysfile.h"
62#include "uptodate.h"
Tiger Yangcf1d6c72008-08-18 17:11:00 +080063#include "xattr.h"
Tiger Yang89c38bd2008-11-14 11:17:41 +080064#include "acl.h"
Tao Ma8990e442011-02-23 22:45:26 +080065#include "ocfs2_trace.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,
Al Viro00cd8dd2012-06-10 17:13:09 -0400101 unsigned int flags)
Mark Fashehccd979b2005-12-15 14:31:24 -0800102{
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
Tao Ma8990e442011-02-23 22:45:26 +0800109 trace_ocfs2_lookup(dir, dentry, dentry->d_name.len,
110 dentry->d_name.name,
111 (unsigned long long)OCFS2_I(dir)->ip_blkno, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800112
113 if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) {
114 ret = ERR_PTR(-ENAMETOOLONG);
115 goto bail;
116 }
117
Jan Karacb257972009-06-04 15:26:50 +0200118 status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT);
Mark Fashehccd979b2005-12-15 14:31:24 -0800119 if (status < 0) {
120 if (status != -ENOENT)
121 mlog_errno(status);
122 ret = ERR_PTR(status);
123 goto bail;
124 }
125
Mark Fashehbe94d112007-09-11 15:22:06 -0700126 status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name,
127 dentry->d_name.len, &blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800128 if (status < 0)
129 goto bail_add;
130
Jan Kara5fa06132008-01-11 00:11:45 +0100131 inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800132 if (IS_ERR(inode)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800133 ret = ERR_PTR(-EACCES);
134 goto bail_unlock;
135 }
136
137 oi = OCFS2_I(inode);
138 /* Clear any orphaned state... If we were able to look up the
139 * inode from a directory, it certainly can't be orphaned. We
140 * might have the bad state from a node which intended to
141 * orphan this inode but crashed before it could commit the
142 * unlink. */
143 spin_lock(&oi->ip_lock);
144 oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED;
Mark Fashehccd979b2005-12-15 14:31:24 -0800145 spin_unlock(&oi->ip_lock);
146
147bail_add:
Mark Fashehccd979b2005-12-15 14:31:24 -0800148 ret = d_splice_alias(inode, dentry);
149
Mark Fasheh379dfe92006-09-08 14:21:03 -0700150 if (inode) {
151 /*
152 * If d_splice_alias() finds a DCACHE_DISCONNECTED
153 * dentry, it will d_move() it on top of ourse. The
154 * return value will indicate this however, so in
155 * those cases, we switch them around for the locking
156 * code.
157 *
158 * NOTE: This dentry already has ->d_op set from
159 * ocfs2_get_parent() and ocfs2_get_dentry()
160 */
Richard Weinbergerd3556ba2014-10-29 14:50:53 -0700161 if (!IS_ERR_OR_NULL(ret))
Mark Fasheh379dfe92006-09-08 14:21:03 -0700162 dentry = ret;
163
164 status = ocfs2_dentry_attach_lock(dentry, inode,
Mark Fasheh0027dd52006-09-21 16:51:28 -0700165 OCFS2_I(dir)->ip_blkno);
Mark Fasheh379dfe92006-09-08 14:21:03 -0700166 if (status) {
167 mlog_errno(status);
168 ret = ERR_PTR(status);
169 goto bail_unlock;
170 }
Goldwyn Rodrigues5e98d492010-06-28 10:04:32 -0500171 } else
172 ocfs2_dentry_attach_gen(dentry);
Mark Fasheh379dfe92006-09-08 14:21:03 -0700173
Mark Fashehccd979b2005-12-15 14:31:24 -0800174bail_unlock:
175 /* Don't drop the cluster lock until *after* the d_add --
176 * unlink on another node will message us to remove that
177 * dentry under this lock so otherwise we can race this with
Mark Fasheh34d024f2007-09-24 15:56:19 -0700178 * the downconvert thread and have a stale dentry. */
Mark Fashehe63aecb62007-10-18 15:30:42 -0700179 ocfs2_inode_unlock(dir, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800180
181bail:
Mark Fashehccd979b2005-12-15 14:31:24 -0800182
Tao Ma8990e442011-02-23 22:45:26 +0800183 trace_ocfs2_lookup_ret(ret);
Mark Fashehccd979b2005-12-15 14:31:24 -0800184
185 return ret;
186}
187
Al Viro67697cb2011-07-26 02:55:32 -0400188static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode)
Tiger Yangf5d36202008-11-14 11:15:44 +0800189{
190 struct inode *inode;
191
192 inode = new_inode(dir->i_sb);
193 if (!inode) {
194 mlog(ML_ERROR, "new_inode failed!\n");
195 return NULL;
196 }
197
198 /* populate as many fields early on as possible - many of
199 * these are used by the support functions here and in
200 * callers. */
201 if (S_ISDIR(mode))
Miklos Szeredibfe86842011-10-28 14:13:29 +0200202 set_nlink(inode, 2);
Dmitry Monakhov75fe0a22010-03-04 17:32:16 +0300203 inode_init_owner(inode, dir, mode);
Christoph Hellwig871a2932010-03-03 09:05:07 -0500204 dquot_initialize(inode);
Tiger Yangf5d36202008-11-14 11:15:44 +0800205 return inode;
206}
207
jiangyiwen595297a2014-06-23 13:22:09 -0700208static void ocfs2_cleanup_add_entry_failure(struct ocfs2_super *osb,
209 struct dentry *dentry, struct inode *inode)
210{
211 struct ocfs2_dentry_lock *dl = dentry->d_fsdata;
212
213 ocfs2_simple_drop_lockres(osb, &dl->dl_lockres);
214 ocfs2_lock_res_free(&dl->dl_lockres);
215 BUG_ON(dl->dl_count != 1);
216 spin_lock(&dentry_attach_lock);
217 dentry->d_fsdata = NULL;
218 spin_unlock(&dentry_attach_lock);
219 kfree(dl);
220 iput(inode);
221}
222
Mark Fashehccd979b2005-12-15 14:31:24 -0800223static int ocfs2_mknod(struct inode *dir,
224 struct dentry *dentry,
Al Viro1a67aaf2011-07-26 01:52:52 -0400225 umode_t mode,
Mark Fashehccd979b2005-12-15 14:31:24 -0800226 dev_t dev)
227{
228 int status = 0;
229 struct buffer_head *parent_fe_bh = NULL;
Mark Fasheh1fabe142006-10-09 18:11:45 -0700230 handle_t *handle = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800231 struct ocfs2_super *osb;
232 struct ocfs2_dinode *dirfe;
233 struct buffer_head *new_fe_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800234 struct inode *inode = NULL;
235 struct ocfs2_alloc_context *inode_ac = NULL;
236 struct ocfs2_alloc_context *data_ac = NULL;
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800237 struct ocfs2_alloc_context *meta_ac = NULL;
Tiger Yang534eadd2008-11-14 11:16:41 +0800238 int want_clusters = 0;
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800239 int want_meta = 0;
Tiger Yang534eadd2008-11-14 11:16:41 +0800240 int xattr_credits = 0;
241 struct ocfs2_security_xattr_info si = {
242 .enable = 1,
243 };
Jan Karaa90714c2008-10-09 19:38:40 +0200244 int did_quota_inode = 0;
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800245 struct ocfs2_dir_lookup_result lookup = { NULL, };
Joel Becker547ba7c2010-05-10 11:56:52 -0700246 sigset_t oldset;
247 int did_block_signals = 0;
Christoph Hellwig702e5bc2013-12-20 05:16:48 -0800248 struct posix_acl *default_acl = NULL, *acl = NULL;
jiangyiwen595297a2014-06-23 13:22:09 -0700249 struct ocfs2_dentry_lock *dl = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800250
Tao Ma8990e442011-02-23 22:45:26 +0800251 trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name,
252 (unsigned long long)OCFS2_I(dir)->ip_blkno,
253 (unsigned long)dev, mode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800254
Christoph Hellwig871a2932010-03-03 09:05:07 -0500255 dquot_initialize(dir);
Christoph Hellwig907f4552010-03-03 09:05:06 -0500256
Mark Fashehccd979b2005-12-15 14:31:24 -0800257 /* get our super block */
258 osb = OCFS2_SB(dir->i_sb);
259
Mark Fashehe63aecb62007-10-18 15:30:42 -0700260 status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
Mark Fashehe3a82132006-10-05 16:04:17 -0700261 if (status < 0) {
262 if (status != -ENOENT)
263 mlog_errno(status);
264 return status;
265 }
266
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800267 if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) {
Mark Fasheha663e302006-08-09 11:45:07 -0700268 status = -EMLINK;
269 goto leave;
270 }
271
Mark Fashehccd979b2005-12-15 14:31:24 -0800272 dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800273 if (!ocfs2_read_links_count(dirfe)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800274 /* can't make a file in a deleted directory. */
275 status = -ENOENT;
276 goto leave;
277 }
278
279 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
280 dentry->d_name.len);
281 if (status)
282 goto leave;
283
284 /* get a spot inside the dir. */
285 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
286 dentry->d_name.name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800287 dentry->d_name.len, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800288 if (status < 0) {
289 mlog_errno(status);
290 goto leave;
291 }
292
293 /* reserve an inode spot */
Mark Fashehda5cbf22006-10-06 18:34:35 -0700294 status = ocfs2_reserve_new_inode(osb, &inode_ac);
Mark Fashehccd979b2005-12-15 14:31:24 -0800295 if (status < 0) {
296 if (status != -ENOSPC)
297 mlog_errno(status);
298 goto leave;
299 }
300
Tiger Yangf5d36202008-11-14 11:15:44 +0800301 inode = ocfs2_get_init_inode(dir, mode);
302 if (!inode) {
303 status = -ENOMEM;
304 mlog_errno(status);
305 goto leave;
306 }
307
Tiger Yang534eadd2008-11-14 11:16:41 +0800308 /* get security xattr */
Eric Paris2a7dba32011-02-01 11:05:39 -0500309 status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si);
Tiger Yang534eadd2008-11-14 11:16:41 +0800310 if (status) {
311 if (status == -EOPNOTSUPP)
312 si.enable = 0;
313 else {
314 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -0800315 goto leave;
316 }
317 }
318
Tiger Yang89c38bd2008-11-14 11:17:41 +0800319 /* calculate meta data/clusters for setting security and acl xattr */
320 status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800321 &si, &want_clusters,
322 &xattr_credits, &want_meta);
Tiger Yang89c38bd2008-11-14 11:17:41 +0800323 if (status < 0) {
324 mlog_errno(status);
325 goto leave;
Tiger Yang534eadd2008-11-14 11:16:41 +0800326 }
327
328 /* Reserve a cluster if creating an extent based directory. */
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800329 if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) {
Tiger Yang534eadd2008-11-14 11:16:41 +0800330 want_clusters += 1;
331
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800332 /* Dir indexing requires extra space as well */
Mark Fasheh4ed8a6b2008-11-24 17:02:08 -0800333 if (ocfs2_supports_indexed_dirs(osb))
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800334 want_meta++;
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800335 }
336
337 status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac);
338 if (status < 0) {
339 if (status != -ENOSPC)
340 mlog_errno(status);
341 goto leave;
342 }
343
Tiger Yang534eadd2008-11-14 11:16:41 +0800344 status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
345 if (status < 0) {
346 if (status != -ENOSPC)
347 mlog_errno(status);
348 goto leave;
349 }
350
Christoph Hellwig702e5bc2013-12-20 05:16:48 -0800351 status = posix_acl_create(dir, &mode, &default_acl, &acl);
352 if (status) {
353 mlog_errno(status);
354 goto leave;
355 }
356
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800357 handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb,
358 S_ISDIR(mode),
359 xattr_credits));
Mark Fashehccd979b2005-12-15 14:31:24 -0800360 if (IS_ERR(handle)) {
361 status = PTR_ERR(handle);
362 handle = NULL;
363 mlog_errno(status);
364 goto leave;
365 }
366
Joel Becker547ba7c2010-05-10 11:56:52 -0700367 /* Starting to change things, restart is no longer possible. */
368 ocfs2_block_signals(&oldset);
369 did_block_signals = 1;
370
Christoph Hellwig63936dd2010-03-03 09:05:01 -0500371 status = dquot_alloc_inode(inode);
372 if (status)
Jan Karaa90714c2008-10-09 19:38:40 +0200373 goto leave;
Jan Karaa90714c2008-10-09 19:38:40 +0200374 did_quota_inode = 1;
375
Mark Fashehccd979b2005-12-15 14:31:24 -0800376 /* do the real work now. */
Tao Ma19bd3412009-08-18 11:44:10 +0800377 status = ocfs2_mknod_locked(osb, dir, inode, dev,
Mark Fashehccd979b2005-12-15 14:31:24 -0800378 &new_fe_bh, parent_fe_bh, handle,
Tiger Yangf5d36202008-11-14 11:15:44 +0800379 inode_ac);
Mark Fashehccd979b2005-12-15 14:31:24 -0800380 if (status < 0) {
381 mlog_errno(status);
382 goto leave;
383 }
384
385 if (S_ISDIR(mode)) {
386 status = ocfs2_fill_new_dir(osb, handle, dir, inode,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800387 new_fe_bh, data_ac, meta_ac);
Mark Fashehccd979b2005-12-15 14:31:24 -0800388 if (status < 0) {
389 mlog_errno(status);
390 goto leave;
391 }
392
Joel Becker0cf2f762009-02-12 16:41:25 -0800393 status = ocfs2_journal_access_di(handle, INODE_CACHE(dir),
394 parent_fe_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700395 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800396 if (status < 0) {
397 mlog_errno(status);
398 goto leave;
399 }
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800400 ocfs2_add_links_count(dirfe, 1);
Joel Beckerec20cec2010-03-19 14:13:52 -0700401 ocfs2_journal_dirty(handle, parent_fe_bh);
Dave Hansend8c76e62006-09-30 23:29:04 -0700402 inc_nlink(dir);
Mark Fashehccd979b2005-12-15 14:31:24 -0800403 }
404
Christoph Hellwig702e5bc2013-12-20 05:16:48 -0800405 if (default_acl) {
406 status = ocfs2_set_acl(handle, inode, new_fe_bh,
407 ACL_TYPE_DEFAULT, default_acl,
408 meta_ac, data_ac);
409 }
410 if (!status && acl) {
411 status = ocfs2_set_acl(handle, inode, new_fe_bh,
412 ACL_TYPE_ACCESS, acl,
413 meta_ac, data_ac);
414 }
415
Tiger Yang89c38bd2008-11-14 11:17:41 +0800416 if (status < 0) {
417 mlog_errno(status);
418 goto leave;
419 }
420
Tiger Yang534eadd2008-11-14 11:16:41 +0800421 if (si.enable) {
422 status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800423 meta_ac, data_ac);
Tiger Yang534eadd2008-11-14 11:16:41 +0800424 if (status < 0) {
425 mlog_errno(status);
426 goto leave;
427 }
428 }
429
Mark Fasheha9743fc2010-04-23 11:42:22 -0700430 /*
431 * Do this before adding the entry to the directory. We add
432 * also set d_op after success so that ->d_iput() will cleanup
433 * the dentry lock even if ocfs2_add_entry() fails below.
434 */
435 status = ocfs2_dentry_attach_lock(dentry, inode,
436 OCFS2_I(dir)->ip_blkno);
437 if (status) {
438 mlog_errno(status);
439 goto leave;
440 }
Mark Fasheha9743fc2010-04-23 11:42:22 -0700441
jiangyiwen595297a2014-06-23 13:22:09 -0700442 dl = dentry->d_fsdata;
443
Mark Fashehccd979b2005-12-15 14:31:24 -0800444 status = ocfs2_add_entry(handle, dentry, inode,
445 OCFS2_I(inode)->ip_blkno, parent_fe_bh,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800446 &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800447 if (status < 0) {
448 mlog_errno(status);
449 goto leave;
450 }
451
452 insert_inode_hash(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800453 d_instantiate(dentry, inode);
454 status = 0;
455leave:
Christoph Hellwig702e5bc2013-12-20 05:16:48 -0800456 if (default_acl)
457 posix_acl_release(default_acl);
458 if (acl)
459 posix_acl_release(acl);
Jan Karaa90714c2008-10-09 19:38:40 +0200460 if (status < 0 && did_quota_inode)
Christoph Hellwig63936dd2010-03-03 09:05:01 -0500461 dquot_free_inode(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800462 if (handle)
Mark Fasheh02dc1af2006-10-09 16:48:10 -0700463 ocfs2_commit_trans(osb, handle);
Mark Fashehccd979b2005-12-15 14:31:24 -0800464
Mark Fashehe63aecb62007-10-18 15:30:42 -0700465 ocfs2_inode_unlock(dir, 1);
Joel Becker547ba7c2010-05-10 11:56:52 -0700466 if (did_block_signals)
467 ocfs2_unblock_signals(&oldset);
Mark Fashehe3a82132006-10-05 16:04:17 -0700468
Mark Fasheha81cb882008-10-07 14:25:16 -0700469 brelse(new_fe_bh);
Mark Fasheha81cb882008-10-07 14:25:16 -0700470 brelse(parent_fe_bh);
Tiger Yang534eadd2008-11-14 11:16:41 +0800471 kfree(si.value);
Mark Fashehccd979b2005-12-15 14:31:24 -0800472
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800473 ocfs2_free_dir_lookup_result(&lookup);
474
Mark Fashehccd979b2005-12-15 14:31:24 -0800475 if (inode_ac)
476 ocfs2_free_alloc_context(inode_ac);
477
478 if (data_ac)
479 ocfs2_free_alloc_context(data_ac);
480
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800481 if (meta_ac)
482 ocfs2_free_alloc_context(meta_ac);
Tiger Yang534eadd2008-11-14 11:16:41 +0800483
Li Dongyang062d3402010-04-22 16:11:29 +0800484 /*
485 * We should call iput after the i_mutex of the bitmap been
486 * unlocked in ocfs2_free_alloc_context, or the
487 * ocfs2_delete_inode will mutex_lock again.
488 */
489 if ((status < 0) && inode) {
jiangyiwen595297a2014-06-23 13:22:09 -0700490 if (dl)
491 ocfs2_cleanup_add_entry_failure(osb, dentry, inode);
492
Li Dongyang062d3402010-04-22 16:11:29 +0800493 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR;
494 clear_nlink(inode);
495 iput(inode);
496 }
497
Tao Mac1e8d352011-03-07 16:43:21 +0800498 if (status)
499 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -0800500
501 return status;
502}
503
Mark Fasheh021960c2010-08-13 15:15:15 -0700504static int __ocfs2_mknod_locked(struct inode *dir,
505 struct inode *inode,
506 dev_t dev,
507 struct buffer_head **new_fe_bh,
508 struct buffer_head *parent_fe_bh,
509 handle_t *handle,
510 struct ocfs2_alloc_context *inode_ac,
511 u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit)
Mark Fashehccd979b2005-12-15 14:31:24 -0800512{
513 int status = 0;
Mark Fasheh021960c2010-08-13 15:15:15 -0700514 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
Mark Fashehccd979b2005-12-15 14:31:24 -0800515 struct ocfs2_dinode *fe = NULL;
516 struct ocfs2_extent_list *fel;
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800517 u16 feat;
Darrick J. Wong2931cdc2014-04-03 14:46:48 -0700518 struct ocfs2_inode_info *oi = OCFS2_I(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800519
Mark Fashehccd979b2005-12-15 14:31:24 -0800520 *new_fe_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800521
Mark Fashehccd979b2005-12-15 14:31:24 -0800522 /* populate as many fields early on as possible - many of
523 * these are used by the support functions here and in
524 * callers. */
525 inode->i_ino = ino_from_blkno(osb->sb, fe_blkno);
526 OCFS2_I(inode)->ip_blkno = fe_blkno;
Mark Fashehccd979b2005-12-15 14:31:24 -0800527 spin_lock(&osb->osb_lock);
528 inode->i_generation = osb->s_next_generation++;
529 spin_unlock(&osb->osb_lock);
530
531 *new_fe_bh = sb_getblk(osb->sb, fe_blkno);
532 if (!*new_fe_bh) {
Rui Xiang7391a292013-11-12 15:06:54 -0800533 status = -ENOMEM;
Mark Fashehccd979b2005-12-15 14:31:24 -0800534 mlog_errno(status);
535 goto leave;
536 }
Joel Becker8cb471e2009-02-10 20:00:41 -0800537 ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800538
Joel Becker0cf2f762009-02-12 16:41:25 -0800539 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
540 *new_fe_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700541 OCFS2_JOURNAL_ACCESS_CREATE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800542 if (status < 0) {
543 mlog_errno(status);
544 goto leave;
545 }
546
547 fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data;
548 memset(fe, 0, osb->sb->s_blocksize);
549
550 fe->i_generation = cpu_to_le32(inode->i_generation);
551 fe->i_fs_generation = cpu_to_le32(osb->fs_generation);
552 fe->i_blkno = cpu_to_le64(fe_blkno);
Joel Becker2b6cb572010-03-26 10:09:15 +0800553 fe->i_suballoc_loc = cpu_to_le64(suballoc_loc);
Mark Fashehccd979b2005-12-15 14:31:24 -0800554 fe->i_suballoc_bit = cpu_to_le16(suballoc_bit);
Tao Ma4d0ddb22008-03-05 16:11:46 +0800555 fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot);
Eric W. Biederman2c034172013-01-31 17:27:11 -0800556 fe->i_uid = cpu_to_le32(i_uid_read(inode));
557 fe->i_gid = cpu_to_le32(i_gid_read(inode));
Tiger Yangf5d36202008-11-14 11:15:44 +0800558 fe->i_mode = cpu_to_le16(inode->i_mode);
559 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
Mark Fashehccd979b2005-12-15 14:31:24 -0800560 fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev));
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800561
562 ocfs2_set_links_count(fe, inode->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -0800563
564 fe->i_last_eb_blk = 0;
565 strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE);
Joseph Qi13eb9882013-07-03 15:00:48 -0700566 fe->i_flags |= cpu_to_le32(OCFS2_VALID_FL);
Mark Fashehccd979b2005-12-15 14:31:24 -0800567 fe->i_atime = fe->i_ctime = fe->i_mtime =
568 cpu_to_le64(CURRENT_TIME.tv_sec);
569 fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec =
570 cpu_to_le32(CURRENT_TIME.tv_nsec);
571 fe->i_dtime = 0;
572
Mark Fasheh5b6a3a22007-09-13 16:33:54 -0700573 /*
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800574 * If supported, directories start with inline data. If inline
575 * isn't supported, but indexing is, we start them as indexed.
Mark Fasheh5b6a3a22007-09-13 16:33:54 -0700576 */
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800577 feat = le16_to_cpu(fe->i_dyn_features);
Tiger Yangf5d36202008-11-14 11:15:44 +0800578 if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) {
Mark Fasheh5b6a3a22007-09-13 16:33:54 -0700579 fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL);
580
Tiger Yangd9ae49d2009-03-05 11:06:15 +0800581 fe->id2.i_data.id_count = cpu_to_le16(
582 ocfs2_max_inline_data_with_xattr(osb->sb, fe));
Mark Fasheh5b6a3a22007-09-13 16:33:54 -0700583 } else {
584 fel = &fe->id2.i_list;
585 fel->l_tree_depth = 0;
586 fel->l_next_free_rec = 0;
587 fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb));
588 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800589
Joel Beckerec20cec2010-03-19 14:13:52 -0700590 ocfs2_journal_dirty(handle, *new_fe_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800591
Joel Beckerb657c952008-11-13 14:49:11 -0800592 ocfs2_populate_inode(inode, fe, 1);
Joel Becker0cf2f762009-02-12 16:41:25 -0800593 ocfs2_ci_set_new(osb, INODE_CACHE(inode));
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800594 if (!ocfs2_mount_local(osb)) {
595 status = ocfs2_create_new_inode_locks(inode);
596 if (status < 0)
597 mlog_errno(status);
598 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800599
Darrick J. Wong2931cdc2014-04-03 14:46:48 -0700600 oi->i_sync_tid = handle->h_transaction->t_tid;
601 oi->i_datasync_tid = handle->h_transaction->t_tid;
602
Mark Fashehccd979b2005-12-15 14:31:24 -0800603leave:
604 if (status < 0) {
605 if (*new_fe_bh) {
606 brelse(*new_fe_bh);
607 *new_fe_bh = NULL;
608 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800609 }
610
Tao Mac1e8d352011-03-07 16:43:21 +0800611 if (status)
612 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -0800613 return status;
614}
615
Mark Fasheh021960c2010-08-13 15:15:15 -0700616static int ocfs2_mknod_locked(struct ocfs2_super *osb,
617 struct inode *dir,
618 struct inode *inode,
619 dev_t dev,
620 struct buffer_head **new_fe_bh,
621 struct buffer_head *parent_fe_bh,
622 handle_t *handle,
623 struct ocfs2_alloc_context *inode_ac)
624{
625 int status = 0;
626 u64 suballoc_loc, fe_blkno = 0;
627 u16 suballoc_bit;
628
629 *new_fe_bh = NULL;
630
631 status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh,
632 inode_ac, &suballoc_loc,
633 &suballoc_bit, &fe_blkno);
634 if (status < 0) {
635 mlog_errno(status);
636 return status;
637 }
638
639 return __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh,
640 parent_fe_bh, handle, inode_ac,
641 fe_blkno, suballoc_loc, suballoc_bit);
642}
643
Mark Fashehccd979b2005-12-15 14:31:24 -0800644static int ocfs2_mkdir(struct inode *dir,
645 struct dentry *dentry,
Al Viro18bb1db2011-07-26 01:41:39 -0400646 umode_t mode)
Mark Fashehccd979b2005-12-15 14:31:24 -0800647{
648 int ret;
649
Tao Ma8990e442011-02-23 22:45:26 +0800650 trace_ocfs2_mkdir(dir, dentry, dentry->d_name.len, dentry->d_name.name,
651 OCFS2_I(dir)->ip_blkno, mode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800652 ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0);
Tao Mac1e8d352011-03-07 16:43:21 +0800653 if (ret)
654 mlog_errno(ret);
Mark Fashehccd979b2005-12-15 14:31:24 -0800655
656 return ret;
657}
658
659static int ocfs2_create(struct inode *dir,
660 struct dentry *dentry,
Al Viro4acdaf22011-07-26 01:42:34 -0400661 umode_t mode,
Al Viroebfc3b42012-06-10 18:05:36 -0400662 bool excl)
Mark Fashehccd979b2005-12-15 14:31:24 -0800663{
664 int ret;
665
Tao Ma8990e442011-02-23 22:45:26 +0800666 trace_ocfs2_create(dir, dentry, dentry->d_name.len, dentry->d_name.name,
667 (unsigned long long)OCFS2_I(dir)->ip_blkno, mode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800668 ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0);
Tao Mac1e8d352011-03-07 16:43:21 +0800669 if (ret)
670 mlog_errno(ret);
Mark Fashehccd979b2005-12-15 14:31:24 -0800671
672 return ret;
673}
674
675static int ocfs2_link(struct dentry *old_dentry,
676 struct inode *dir,
677 struct dentry *dentry)
678{
Mark Fasheh1fabe142006-10-09 18:11:45 -0700679 handle_t *handle;
Mark Fashehccd979b2005-12-15 14:31:24 -0800680 struct inode *inode = old_dentry->d_inode;
681 int err;
682 struct buffer_head *fe_bh = NULL;
683 struct buffer_head *parent_fe_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800684 struct ocfs2_dinode *fe = NULL;
685 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800686 struct ocfs2_dir_lookup_result lookup = { NULL, };
Joel Becker547ba7c2010-05-10 11:56:52 -0700687 sigset_t oldset;
Xue jiufei0e048312014-02-10 14:25:54 -0800688 u64 old_de_ino;
Mark Fashehccd979b2005-12-15 14:31:24 -0800689
Tao Ma8990e442011-02-23 22:45:26 +0800690 trace_ocfs2_link((unsigned long long)OCFS2_I(inode)->ip_blkno,
691 old_dentry->d_name.len, old_dentry->d_name.name,
692 dentry->d_name.len, dentry->d_name.name);
Mark Fashehccd979b2005-12-15 14:31:24 -0800693
Mark Fasheh123a9642006-10-05 16:48:23 -0700694 if (S_ISDIR(inode->i_mode))
695 return -EPERM;
Mark Fashehccd979b2005-12-15 14:31:24 -0800696
Christoph Hellwig871a2932010-03-03 09:05:07 -0500697 dquot_initialize(dir);
Christoph Hellwig907f4552010-03-03 09:05:06 -0500698
Jan Karacb257972009-06-04 15:26:50 +0200699 err = ocfs2_inode_lock_nested(dir, &parent_fe_bh, 1, OI_LS_PARENT);
Mark Fashehccd979b2005-12-15 14:31:24 -0800700 if (err < 0) {
701 if (err != -ENOENT)
702 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700703 return err;
Mark Fashehccd979b2005-12-15 14:31:24 -0800704 }
705
Tiger Yang0f62de22006-08-31 20:39:47 -0700706 if (!dir->i_nlink) {
707 err = -ENOENT;
Mark Fasheh123a9642006-10-05 16:48:23 -0700708 goto out;
Tiger Yang0f62de22006-08-31 20:39:47 -0700709 }
710
Xue jiufei0e048312014-02-10 14:25:54 -0800711 err = ocfs2_lookup_ino_from_name(dir, old_dentry->d_name.name,
712 old_dentry->d_name.len, &old_de_ino);
713 if (err) {
714 err = -ENOENT;
715 goto out;
716 }
717
718 /*
719 * Check whether another node removed the source inode while we
720 * were in the vfs.
721 */
722 if (old_de_ino != OCFS2_I(inode)->ip_blkno) {
723 err = -ENOENT;
724 goto out;
725 }
726
Mark Fashehccd979b2005-12-15 14:31:24 -0800727 err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
728 dentry->d_name.len);
729 if (err)
Mark Fasheh123a9642006-10-05 16:48:23 -0700730 goto out;
Mark Fashehccd979b2005-12-15 14:31:24 -0800731
732 err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
733 dentry->d_name.name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800734 dentry->d_name.len, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800735 if (err < 0) {
736 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700737 goto out;
Mark Fashehccd979b2005-12-15 14:31:24 -0800738 }
739
Mark Fashehe63aecb62007-10-18 15:30:42 -0700740 err = ocfs2_inode_lock(inode, &fe_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -0800741 if (err < 0) {
742 if (err != -ENOENT)
743 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700744 goto out;
Mark Fashehccd979b2005-12-15 14:31:24 -0800745 }
746
747 fe = (struct ocfs2_dinode *) fe_bh->b_data;
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800748 if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800749 err = -EMLINK;
Mark Fasheh123a9642006-10-05 16:48:23 -0700750 goto out_unlock_inode;
Mark Fashehccd979b2005-12-15 14:31:24 -0800751 }
752
Jan Karaa90714c2008-10-09 19:38:40 +0200753 handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb));
Mark Fashehccd979b2005-12-15 14:31:24 -0800754 if (IS_ERR(handle)) {
755 err = PTR_ERR(handle);
756 handle = NULL;
757 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700758 goto out_unlock_inode;
Mark Fashehccd979b2005-12-15 14:31:24 -0800759 }
760
Joel Becker547ba7c2010-05-10 11:56:52 -0700761 /* Starting to change things, restart is no longer possible. */
762 ocfs2_block_signals(&oldset);
763
Joel Becker0cf2f762009-02-12 16:41:25 -0800764 err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700765 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800766 if (err < 0) {
767 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700768 goto out_commit;
Mark Fashehccd979b2005-12-15 14:31:24 -0800769 }
770
Dave Hansend8c76e62006-09-30 23:29:04 -0700771 inc_nlink(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800772 inode->i_ctime = CURRENT_TIME;
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800773 ocfs2_set_links_count(fe, inode->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -0800774 fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
775 fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
Joel Beckerec20cec2010-03-19 14:13:52 -0700776 ocfs2_journal_dirty(handle, fe_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800777
778 err = ocfs2_add_entry(handle, dentry, inode,
779 OCFS2_I(inode)->ip_blkno,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800780 parent_fe_bh, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800781 if (err) {
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800782 ocfs2_add_links_count(fe, -1);
Dave Hansen9a53c3a2006-09-30 23:29:03 -0700783 drop_nlink(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800784 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700785 goto out_commit;
Mark Fashehccd979b2005-12-15 14:31:24 -0800786 }
787
Mark Fasheh0027dd52006-09-21 16:51:28 -0700788 err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
Mark Fasheh379dfe92006-09-08 14:21:03 -0700789 if (err) {
790 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700791 goto out_commit;
Mark Fasheh379dfe92006-09-08 14:21:03 -0700792 }
793
Al Viro7de9c6ee2010-10-23 11:11:40 -0400794 ihold(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800795 d_instantiate(dentry, inode);
Mark Fasheh123a9642006-10-05 16:48:23 -0700796
797out_commit:
Mark Fasheh02dc1af2006-10-09 16:48:10 -0700798 ocfs2_commit_trans(osb, handle);
Joel Becker547ba7c2010-05-10 11:56:52 -0700799 ocfs2_unblock_signals(&oldset);
Mark Fasheh123a9642006-10-05 16:48:23 -0700800out_unlock_inode:
Mark Fashehe63aecb62007-10-18 15:30:42 -0700801 ocfs2_inode_unlock(inode, 1);
Mark Fasheh123a9642006-10-05 16:48:23 -0700802
803out:
Mark Fashehe63aecb62007-10-18 15:30:42 -0700804 ocfs2_inode_unlock(dir, 1);
Mark Fasheh123a9642006-10-05 16:48:23 -0700805
Mark Fasheha81cb882008-10-07 14:25:16 -0700806 brelse(fe_bh);
807 brelse(parent_fe_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800808
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800809 ocfs2_free_dir_lookup_result(&lookup);
810
Tao Mac1e8d352011-03-07 16:43:21 +0800811 if (err)
812 mlog_errno(err);
Mark Fashehccd979b2005-12-15 14:31:24 -0800813
814 return err;
815}
816
Mark Fasheh379dfe92006-09-08 14:21:03 -0700817/*
818 * Takes and drops an exclusive lock on the given dentry. This will
819 * force other nodes to drop it.
820 */
821static int ocfs2_remote_dentry_delete(struct dentry *dentry)
822{
823 int ret;
824
825 ret = ocfs2_dentry_lock(dentry, 1);
826 if (ret)
827 mlog_errno(ret);
828 else
829 ocfs2_dentry_unlock(dentry, 1);
830
831 return ret;
832}
833
Younger Liub5a8bb72013-07-03 15:01:01 -0700834static inline int ocfs2_inode_is_unlinkable(struct inode *inode)
Mark Fasheh17ff7852006-09-30 23:29:05 -0700835{
836 if (S_ISDIR(inode->i_mode)) {
837 if (inode->i_nlink == 2)
838 return 1;
839 return 0;
840 }
841
842 if (inode->i_nlink == 1)
843 return 1;
844 return 0;
845}
846
Mark Fashehccd979b2005-12-15 14:31:24 -0800847static int ocfs2_unlink(struct inode *dir,
848 struct dentry *dentry)
849{
850 int status;
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700851 int child_locked = 0;
Younger Liub5a8bb72013-07-03 15:01:01 -0700852 bool is_unlinkable = false;
Mark Fashehccd979b2005-12-15 14:31:24 -0800853 struct inode *inode = dentry->d_inode;
Mark Fasheh5098c272006-10-05 18:12:57 -0700854 struct inode *orphan_dir = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800855 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
856 u64 blkno;
857 struct ocfs2_dinode *fe = NULL;
858 struct buffer_head *fe_bh = NULL;
859 struct buffer_head *parent_node_bh = NULL;
Mark Fasheh1fabe142006-10-09 18:11:45 -0700860 handle_t *handle = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800861 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800862 struct ocfs2_dir_lookup_result lookup = { NULL, };
863 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
Mark Fashehccd979b2005-12-15 14:31:24 -0800864
Tao Ma8990e442011-02-23 22:45:26 +0800865 trace_ocfs2_unlink(dir, dentry, dentry->d_name.len,
866 dentry->d_name.name,
867 (unsigned long long)OCFS2_I(dir)->ip_blkno,
868 (unsigned long long)OCFS2_I(inode)->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800869
Christoph Hellwig871a2932010-03-03 09:05:07 -0500870 dquot_initialize(dir);
Christoph Hellwig907f4552010-03-03 09:05:06 -0500871
Mark Fashehccd979b2005-12-15 14:31:24 -0800872 BUG_ON(dentry->d_parent->d_inode != dir);
873
Tao Ma8990e442011-02-23 22:45:26 +0800874 if (inode == osb->root_inode)
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700875 return -EPERM;
Mark Fashehccd979b2005-12-15 14:31:24 -0800876
Jan Karacb257972009-06-04 15:26:50 +0200877 status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1,
878 OI_LS_PARENT);
Mark Fashehccd979b2005-12-15 14:31:24 -0800879 if (status < 0) {
880 if (status != -ENOENT)
881 mlog_errno(status);
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700882 return status;
Mark Fashehccd979b2005-12-15 14:31:24 -0800883 }
884
885 status = ocfs2_find_files_on_disk(dentry->d_name.name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800886 dentry->d_name.len, &blkno, dir,
887 &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800888 if (status < 0) {
889 if (status != -ENOENT)
890 mlog_errno(status);
891 goto leave;
892 }
893
894 if (OCFS2_I(inode)->ip_blkno != blkno) {
895 status = -ENOENT;
896
Tao Ma8990e442011-02-23 22:45:26 +0800897 trace_ocfs2_unlink_noent(
898 (unsigned long long)OCFS2_I(inode)->ip_blkno,
899 (unsigned long long)blkno,
900 OCFS2_I(inode)->ip_flags);
Mark Fashehccd979b2005-12-15 14:31:24 -0800901 goto leave;
902 }
903
Mark Fashehe63aecb62007-10-18 15:30:42 -0700904 status = ocfs2_inode_lock(inode, &fe_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -0800905 if (status < 0) {
906 if (status != -ENOENT)
907 mlog_errno(status);
908 goto leave;
909 }
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700910 child_locked = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -0800911
912 if (S_ISDIR(inode->i_mode)) {
Mark Fashehb80b5492009-02-18 11:41:38 -0800913 if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800914 status = -ENOTEMPTY;
915 goto leave;
916 }
917 }
918
Mark Fasheh379dfe92006-09-08 14:21:03 -0700919 status = ocfs2_remote_dentry_delete(dentry);
Mark Fashehccd979b2005-12-15 14:31:24 -0800920 if (status < 0) {
Mark Fasheh34d024f2007-09-24 15:56:19 -0700921 /* This remote delete should succeed under all normal
Mark Fashehccd979b2005-12-15 14:31:24 -0800922 * circumstances. */
923 mlog_errno(status);
924 goto leave;
925 }
926
Younger Liub5a8bb72013-07-03 15:01:01 -0700927 if (ocfs2_inode_is_unlinkable(inode)) {
Tao Ma19bd3412009-08-18 11:44:10 +0800928 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
929 OCFS2_I(inode)->ip_blkno,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800930 orphan_name, &orphan_insert);
Mark Fashehccd979b2005-12-15 14:31:24 -0800931 if (status < 0) {
932 mlog_errno(status);
933 goto leave;
934 }
Younger Liub5a8bb72013-07-03 15:01:01 -0700935 is_unlinkable = true;
Mark Fashehccd979b2005-12-15 14:31:24 -0800936 }
937
Jan Karaa90714c2008-10-09 19:38:40 +0200938 handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb));
Mark Fashehccd979b2005-12-15 14:31:24 -0800939 if (IS_ERR(handle)) {
940 status = PTR_ERR(handle);
941 handle = NULL;
942 mlog_errno(status);
943 goto leave;
944 }
945
Joel Becker0cf2f762009-02-12 16:41:25 -0800946 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700947 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800948 if (status < 0) {
949 mlog_errno(status);
950 goto leave;
951 }
952
953 fe = (struct ocfs2_dinode *) fe_bh->b_data;
954
Mark Fashehccd979b2005-12-15 14:31:24 -0800955 /* delete the name from the parent dir */
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800956 status = ocfs2_delete_entry(handle, dir, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800957 if (status < 0) {
958 mlog_errno(status);
959 goto leave;
960 }
961
Mark Fasheh17ff7852006-09-30 23:29:05 -0700962 if (S_ISDIR(inode->i_mode))
963 drop_nlink(inode);
964 drop_nlink(inode);
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800965 ocfs2_set_links_count(fe, inode->i_nlink);
Joel Beckerec20cec2010-03-19 14:13:52 -0700966 ocfs2_journal_dirty(handle, fe_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800967
Mark Fasheh592282c2007-01-02 17:59:40 -0800968 dir->i_ctime = dir->i_mtime = CURRENT_TIME;
969 if (S_ISDIR(inode->i_mode))
Mark Fasheh17ff7852006-09-30 23:29:05 -0700970 drop_nlink(dir);
Mark Fasheh592282c2007-01-02 17:59:40 -0800971
972 status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh);
973 if (status < 0) {
974 mlog_errno(status);
975 if (S_ISDIR(inode->i_mode))
Dave Hansend8c76e62006-09-30 23:29:04 -0700976 inc_nlink(dir);
Younger Liub5a8bb72013-07-03 15:01:01 -0700977 goto leave;
978 }
979
980 if (is_unlinkable) {
981 status = ocfs2_orphan_add(osb, handle, inode, fe_bh,
982 orphan_name, &orphan_insert, orphan_dir);
983 if (status < 0)
984 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -0800985 }
986
987leave:
Mark Fashehccd979b2005-12-15 14:31:24 -0800988 if (handle)
Mark Fasheh02dc1af2006-10-09 16:48:10 -0700989 ocfs2_commit_trans(osb, handle);
Mark Fashehccd979b2005-12-15 14:31:24 -0800990
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700991 if (child_locked)
Mark Fashehe63aecb62007-10-18 15:30:42 -0700992 ocfs2_inode_unlock(inode, 1);
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700993
Mark Fashehe63aecb62007-10-18 15:30:42 -0700994 ocfs2_inode_unlock(dir, 1);
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700995
Mark Fasheh5098c272006-10-05 18:12:57 -0700996 if (orphan_dir) {
997 /* This was locked for us in ocfs2_prepare_orphan_dir() */
Mark Fashehe63aecb62007-10-18 15:30:42 -0700998 ocfs2_inode_unlock(orphan_dir, 1);
Mark Fasheh5098c272006-10-05 18:12:57 -0700999 mutex_unlock(&orphan_dir->i_mutex);
1000 iput(orphan_dir);
1001 }
1002
Mark Fasheha81cb882008-10-07 14:25:16 -07001003 brelse(fe_bh);
Mark Fasheha81cb882008-10-07 14:25:16 -07001004 brelse(parent_node_bh);
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001005
1006 ocfs2_free_dir_lookup_result(&orphan_insert);
1007 ocfs2_free_dir_lookup_result(&lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08001008
Xiaowei.Huf5b25852014-01-27 17:06:56 -08001009 if (status && (status != -ENOTEMPTY) && (status != -ENOENT))
Tao Mac1e8d352011-03-07 16:43:21 +08001010 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001011
1012 return status;
1013}
1014
Yiwen Jiangf7a14f32014-06-23 13:22:09 -07001015static int ocfs2_check_if_ancestor(struct ocfs2_super *osb,
1016 u64 src_inode_no, u64 dest_inode_no)
1017{
1018 int ret = 0, i = 0;
1019 u64 parent_inode_no = 0;
1020 u64 child_inode_no = src_inode_no;
1021 struct inode *child_inode;
1022
1023#define MAX_LOOKUP_TIMES 32
1024 while (1) {
1025 child_inode = ocfs2_iget(osb, child_inode_no, 0, 0);
1026 if (IS_ERR(child_inode)) {
1027 ret = PTR_ERR(child_inode);
1028 break;
1029 }
1030
1031 ret = ocfs2_inode_lock(child_inode, NULL, 0);
1032 if (ret < 0) {
1033 iput(child_inode);
1034 if (ret != -ENOENT)
1035 mlog_errno(ret);
1036 break;
1037 }
1038
1039 ret = ocfs2_lookup_ino_from_name(child_inode, "..", 2,
1040 &parent_inode_no);
1041 ocfs2_inode_unlock(child_inode, 0);
1042 iput(child_inode);
1043 if (ret < 0) {
1044 ret = -ENOENT;
1045 break;
1046 }
1047
1048 if (parent_inode_no == dest_inode_no) {
1049 ret = 1;
1050 break;
1051 }
1052
1053 if (parent_inode_no == osb->root_inode->i_ino) {
1054 ret = 0;
1055 break;
1056 }
1057
1058 child_inode_no = parent_inode_no;
1059
1060 if (++i >= MAX_LOOKUP_TIMES) {
1061 mlog(ML_NOTICE, "max lookup times reached, filesystem "
1062 "may have nested directories, "
1063 "src inode: %llu, dest inode: %llu.\n",
1064 (unsigned long long)src_inode_no,
1065 (unsigned long long)dest_inode_no);
1066 ret = 0;
1067 break;
1068 }
1069 }
1070
1071 return ret;
1072}
1073
Mark Fashehccd979b2005-12-15 14:31:24 -08001074/*
1075 * The only place this should be used is rename!
1076 * if they have the same id, then the 1st one is the only one locked.
1077 */
1078static int ocfs2_double_lock(struct ocfs2_super *osb,
Mark Fashehccd979b2005-12-15 14:31:24 -08001079 struct buffer_head **bh1,
1080 struct inode *inode1,
1081 struct buffer_head **bh2,
1082 struct inode *inode2)
1083{
1084 int status;
Yiwen Jiangf7a14f32014-06-23 13:22:09 -07001085 int inode1_is_ancestor, inode2_is_ancestor;
Mark Fashehccd979b2005-12-15 14:31:24 -08001086 struct ocfs2_inode_info *oi1 = OCFS2_I(inode1);
1087 struct ocfs2_inode_info *oi2 = OCFS2_I(inode2);
1088 struct buffer_head **tmpbh;
1089 struct inode *tmpinode;
1090
Tao Ma8990e442011-02-23 22:45:26 +08001091 trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno,
1092 (unsigned long long)oi2->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001093
Mark Fashehccd979b2005-12-15 14:31:24 -08001094 if (*bh1)
1095 *bh1 = NULL;
1096 if (*bh2)
1097 *bh2 = NULL;
1098
Yiwen Jiangf7a14f32014-06-23 13:22:09 -07001099 /* we always want to lock the one with the lower lockid first.
1100 * and if they are nested, we lock ancestor first */
Mark Fashehccd979b2005-12-15 14:31:24 -08001101 if (oi1->ip_blkno != oi2->ip_blkno) {
Yiwen Jiangf7a14f32014-06-23 13:22:09 -07001102 inode1_is_ancestor = ocfs2_check_if_ancestor(osb, oi2->ip_blkno,
1103 oi1->ip_blkno);
1104 if (inode1_is_ancestor < 0) {
1105 status = inode1_is_ancestor;
1106 goto bail;
1107 }
1108
1109 inode2_is_ancestor = ocfs2_check_if_ancestor(osb, oi1->ip_blkno,
1110 oi2->ip_blkno);
1111 if (inode2_is_ancestor < 0) {
1112 status = inode2_is_ancestor;
1113 goto bail;
1114 }
1115
1116 if ((inode1_is_ancestor == 1) ||
1117 (oi1->ip_blkno < oi2->ip_blkno &&
1118 inode2_is_ancestor == 0)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001119 /* switch id1 and id2 around */
Mark Fashehccd979b2005-12-15 14:31:24 -08001120 tmpbh = bh2;
1121 bh2 = bh1;
1122 bh1 = tmpbh;
1123
1124 tmpinode = inode2;
1125 inode2 = inode1;
1126 inode1 = tmpinode;
1127 }
1128 /* lock id2 */
Jan Karacb257972009-06-04 15:26:50 +02001129 status = ocfs2_inode_lock_nested(inode2, bh2, 1,
1130 OI_LS_RENAME1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001131 if (status < 0) {
1132 if (status != -ENOENT)
1133 mlog_errno(status);
1134 goto bail;
1135 }
1136 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001137
Mark Fashehccd979b2005-12-15 14:31:24 -08001138 /* lock id1 */
Jan Karacb257972009-06-04 15:26:50 +02001139 status = ocfs2_inode_lock_nested(inode1, bh1, 1, OI_LS_RENAME2);
Mark Fashehccd979b2005-12-15 14:31:24 -08001140 if (status < 0) {
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001141 /*
1142 * An error return must mean that no cluster locks
1143 * were held on function exit.
1144 */
Tao Ma1e6d9152010-12-20 16:21:11 +08001145 if (oi1->ip_blkno != oi2->ip_blkno) {
Mark Fashehe63aecb62007-10-18 15:30:42 -07001146 ocfs2_inode_unlock(inode2, 1);
Tao Ma1e6d9152010-12-20 16:21:11 +08001147 brelse(*bh2);
1148 *bh2 = NULL;
1149 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001150
Mark Fashehccd979b2005-12-15 14:31:24 -08001151 if (status != -ENOENT)
1152 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001153 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001154
Tao Ma8990e442011-02-23 22:45:26 +08001155 trace_ocfs2_double_lock_end(
1156 (unsigned long long)OCFS2_I(inode1)->ip_blkno,
1157 (unsigned long long)OCFS2_I(inode2)->ip_blkno);
1158
Mark Fashehccd979b2005-12-15 14:31:24 -08001159bail:
Tao Mac1e8d352011-03-07 16:43:21 +08001160 if (status)
1161 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001162 return status;
1163}
1164
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001165static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2)
1166{
Mark Fashehe63aecb62007-10-18 15:30:42 -07001167 ocfs2_inode_unlock(inode1, 1);
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001168
1169 if (inode1 != inode2)
Mark Fashehe63aecb62007-10-18 15:30:42 -07001170 ocfs2_inode_unlock(inode2, 1);
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001171}
1172
Mark Fashehccd979b2005-12-15 14:31:24 -08001173static int ocfs2_rename(struct inode *old_dir,
1174 struct dentry *old_dentry,
1175 struct inode *new_dir,
1176 struct dentry *new_dentry)
1177{
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001178 int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0;
1179 int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08001180 struct inode *old_inode = old_dentry->d_inode;
1181 struct inode *new_inode = new_dentry->d_inode;
Mark Fasheh5098c272006-10-05 18:12:57 -07001182 struct inode *orphan_dir = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001183 struct ocfs2_dinode *newfe = NULL;
1184 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
Mark Fashehccd979b2005-12-15 14:31:24 -08001185 struct buffer_head *newfe_bh = NULL;
Mark Fasheh592282c2007-01-02 17:59:40 -08001186 struct buffer_head *old_inode_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001187 struct ocfs2_super *osb = NULL;
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001188 u64 newfe_blkno, old_de_ino;
Mark Fasheh1fabe142006-10-09 18:11:45 -07001189 handle_t *handle = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001190 struct buffer_head *old_dir_bh = NULL;
1191 struct buffer_head *new_dir_bh = NULL;
Al Viro847c9db2012-02-12 21:00:05 -05001192 u32 old_dir_nlink = old_dir->i_nlink;
Sunil Mushran480214d2007-08-06 15:11:56 -07001193 struct ocfs2_dinode *old_di;
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001194 struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, };
1195 struct ocfs2_dir_lookup_result target_lookup_res = { NULL, };
1196 struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, };
1197 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
1198 struct ocfs2_dir_lookup_result target_insert = { NULL, };
alex chen5fb1beb2014-06-23 13:22:07 -07001199 bool should_add_orphan = false;
Mark Fashehccd979b2005-12-15 14:31:24 -08001200
1201 /* At some point it might be nice to break this function up a
1202 * bit. */
1203
Tao Ma8990e442011-02-23 22:45:26 +08001204 trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry,
1205 old_dentry->d_name.len, old_dentry->d_name.name,
1206 new_dentry->d_name.len, new_dentry->d_name.name);
Mark Fashehccd979b2005-12-15 14:31:24 -08001207
Christoph Hellwig871a2932010-03-03 09:05:07 -05001208 dquot_initialize(old_dir);
1209 dquot_initialize(new_dir);
Christoph Hellwig907f4552010-03-03 09:05:06 -05001210
Mark Fashehccd979b2005-12-15 14:31:24 -08001211 osb = OCFS2_SB(old_dir->i_sb);
1212
1213 if (new_inode) {
1214 if (!igrab(new_inode))
1215 BUG();
1216 }
1217
Uwe Kleine-König1b3c3712007-02-17 19:23:03 +01001218 /* Assume a directory hierarchy thusly:
Mark Fashehccd979b2005-12-15 14:31:24 -08001219 * a/b/c
1220 * a/d
1221 * a,b,c, and d are all directories.
1222 *
1223 * from cwd of 'a' on both nodes:
1224 * node1: mv b/c d
1225 * node2: mv d b/c
1226 *
1227 * And that's why, just like the VFS, we need a file system
1228 * rename lock. */
Jan Kara5dabd692008-02-21 18:00:00 +01001229 if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001230 status = ocfs2_rename_lock(osb);
1231 if (status < 0) {
1232 mlog_errno(status);
1233 goto bail;
1234 }
1235 rename_lock = 1;
Yiwen Jiangf7a14f32014-06-23 13:22:09 -07001236
1237 /* here we cannot guarantee the inodes haven't just been
1238 * changed, so check if they are nested again */
1239 status = ocfs2_check_if_ancestor(osb, new_dir->i_ino,
1240 old_inode->i_ino);
1241 if (status < 0) {
1242 mlog_errno(status);
1243 goto bail;
1244 } else if (status == 1) {
1245 status = -EPERM;
1246 trace_ocfs2_rename_not_permitted(
1247 (unsigned long long)old_inode->i_ino,
1248 (unsigned long long)new_dir->i_ino);
1249 goto bail;
1250 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001251 }
1252
Mark Fashehccd979b2005-12-15 14:31:24 -08001253 /* if old and new are the same, this'll just do one lock. */
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001254 status = ocfs2_double_lock(osb, &old_dir_bh, old_dir,
1255 &new_dir_bh, new_dir);
Mark Fashehccd979b2005-12-15 14:31:24 -08001256 if (status < 0) {
1257 mlog_errno(status);
1258 goto bail;
1259 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001260 parents_locked = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001261
1262 /* make sure both dirs have bhs
1263 * get an extra ref on old_dir_bh if old==new */
1264 if (!new_dir_bh) {
1265 if (old_dir_bh) {
1266 new_dir_bh = old_dir_bh;
1267 get_bh(new_dir_bh);
1268 } else {
1269 mlog(ML_ERROR, "no old_dir_bh!\n");
1270 status = -EIO;
1271 goto bail;
1272 }
1273 }
1274
Mark Fasheh379dfe92006-09-08 14:21:03 -07001275 /*
Mark Fasheh592282c2007-01-02 17:59:40 -08001276 * Aside from allowing a meta data update, the locking here
Mark Fasheh34d024f2007-09-24 15:56:19 -07001277 * also ensures that the downconvert thread on other nodes
1278 * won't have to concurrently downconvert the inode and the
1279 * dentry locks.
Mark Fasheh379dfe92006-09-08 14:21:03 -07001280 */
Jan Karacb257972009-06-04 15:26:50 +02001281 status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1,
1282 OI_LS_PARENT);
Mark Fasheh379dfe92006-09-08 14:21:03 -07001283 if (status < 0) {
1284 if (status != -ENOENT)
Mark Fashehccd979b2005-12-15 14:31:24 -08001285 mlog_errno(status);
Mark Fasheh379dfe92006-09-08 14:21:03 -07001286 goto bail;
1287 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001288 old_child_locked = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001289
Mark Fasheh379dfe92006-09-08 14:21:03 -07001290 status = ocfs2_remote_dentry_delete(old_dentry);
1291 if (status < 0) {
1292 mlog_errno(status);
1293 goto bail;
1294 }
1295
1296 if (S_ISDIR(old_inode->i_mode)) {
Mark Fasheh38760e22007-09-11 17:21:56 -07001297 u64 old_inode_parent;
Mark Fashehccd979b2005-12-15 14:31:24 -08001298
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001299 update_dot_dot = 1;
Mark Fasheh38760e22007-09-11 17:21:56 -07001300 status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001301 old_inode,
1302 &old_inode_dot_dot_res);
Mark Fasheh38760e22007-09-11 17:21:56 -07001303 if (status) {
1304 status = -EIO;
Mark Fashehccd979b2005-12-15 14:31:24 -08001305 goto bail;
Mark Fasheh38760e22007-09-11 17:21:56 -07001306 }
1307
1308 if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) {
1309 status = -EIO;
Mark Fashehccd979b2005-12-15 14:31:24 -08001310 goto bail;
Mark Fasheh38760e22007-09-11 17:21:56 -07001311 }
1312
1313 if (!new_inode && new_dir != old_dir &&
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001314 new_dir->i_nlink >= ocfs2_link_max(osb)) {
Mark Fasheh38760e22007-09-11 17:21:56 -07001315 status = -EMLINK;
1316 goto bail;
1317 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001318 }
1319
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001320 status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name,
1321 old_dentry->d_name.len,
1322 &old_de_ino);
1323 if (status) {
1324 status = -ENOENT;
Mark Fashehccd979b2005-12-15 14:31:24 -08001325 goto bail;
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001326 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001327
1328 /*
1329 * Check for inode number is _not_ due to possible IO errors.
1330 * We might rmdir the source, keep it as pwd of some process
1331 * and merrily kill the link to whatever was created under the
1332 * same name. Goodbye sticky bit ;-<
1333 */
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001334 if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) {
1335 status = -ENOENT;
Mark Fashehccd979b2005-12-15 14:31:24 -08001336 goto bail;
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001337 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001338
1339 /* check if the target already exists (in which case we need
1340 * to delete it */
1341 status = ocfs2_find_files_on_disk(new_dentry->d_name.name,
1342 new_dentry->d_name.len,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001343 &newfe_blkno, new_dir,
1344 &target_lookup_res);
Mark Fashehccd979b2005-12-15 14:31:24 -08001345 /* The only error we allow here is -ENOENT because the new
1346 * file not existing is perfectly valid. */
1347 if ((status < 0) && (status != -ENOENT)) {
1348 /* If we cannot find the file specified we should just */
1349 /* return the error... */
1350 mlog_errno(status);
1351 goto bail;
1352 }
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001353 if (status == 0)
1354 target_exists = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001355
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001356 if (!target_exists && new_inode) {
Srinivas Eedae325a882007-10-31 16:49:43 -07001357 /*
1358 * Target was unlinked by another node while we were
1359 * waiting to get to ocfs2_rename(). There isn't
1360 * anything we can do here to help the situation, so
1361 * bubble up the appropriate error.
1362 */
1363 status = -ENOENT;
1364 goto bail;
1365 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001366
1367 /* In case we need to overwrite an existing file, we blow it
1368 * away first */
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001369 if (target_exists) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001370 /* VFS didn't think there existed an inode here, but
1371 * someone else in the cluster must have raced our
1372 * rename to create one. Today we error cleanly, in
1373 * the future we should consider calling iget to build
1374 * a new struct inode for this entry. */
1375 if (!new_inode) {
1376 status = -EACCES;
1377
Tao Ma8990e442011-02-23 22:45:26 +08001378 trace_ocfs2_rename_target_exists(new_dentry->d_name.len,
1379 new_dentry->d_name.name);
Mark Fashehccd979b2005-12-15 14:31:24 -08001380 goto bail;
1381 }
1382
1383 if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) {
1384 status = -EACCES;
1385
Tao Ma8990e442011-02-23 22:45:26 +08001386 trace_ocfs2_rename_disagree(
Mark Fashehb06970532006-03-03 10:24:33 -08001387 (unsigned long long)OCFS2_I(new_inode)->ip_blkno,
1388 (unsigned long long)newfe_blkno,
Mark Fashehccd979b2005-12-15 14:31:24 -08001389 OCFS2_I(new_inode)->ip_flags);
1390 goto bail;
1391 }
1392
Mark Fashehe63aecb62007-10-18 15:30:42 -07001393 status = ocfs2_inode_lock(new_inode, &newfe_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001394 if (status < 0) {
1395 if (status != -ENOENT)
1396 mlog_errno(status);
1397 goto bail;
1398 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001399 new_child_locked = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001400
Mark Fasheh379dfe92006-09-08 14:21:03 -07001401 status = ocfs2_remote_dentry_delete(new_dentry);
Mark Fashehccd979b2005-12-15 14:31:24 -08001402 if (status < 0) {
1403 mlog_errno(status);
1404 goto bail;
1405 }
1406
1407 newfe = (struct ocfs2_dinode *) newfe_bh->b_data;
1408
Tao Ma8990e442011-02-23 22:45:26 +08001409 trace_ocfs2_rename_over_existing(
Mark Fashehb06970532006-03-03 10:24:33 -08001410 (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ?
Mark Fashehccd979b2005-12-15 14:31:24 -08001411 (unsigned long long)newfe_bh->b_blocknr : 0ULL);
1412
1413 if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) {
Mark Fasheh5098c272006-10-05 18:12:57 -07001414 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
Tao Ma19bd3412009-08-18 11:44:10 +08001415 OCFS2_I(new_inode)->ip_blkno,
1416 orphan_name, &orphan_insert);
Mark Fashehccd979b2005-12-15 14:31:24 -08001417 if (status < 0) {
1418 mlog_errno(status);
1419 goto bail;
1420 }
alex chen5fb1beb2014-06-23 13:22:07 -07001421 should_add_orphan = true;
Mark Fashehccd979b2005-12-15 14:31:24 -08001422 }
1423 } else {
1424 BUG_ON(new_dentry->d_parent->d_inode != new_dir);
1425
1426 status = ocfs2_check_dir_for_entry(new_dir,
1427 new_dentry->d_name.name,
1428 new_dentry->d_name.len);
1429 if (status)
1430 goto bail;
1431
1432 status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh,
1433 new_dentry->d_name.name,
1434 new_dentry->d_name.len,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001435 &target_insert);
Mark Fashehccd979b2005-12-15 14:31:24 -08001436 if (status < 0) {
1437 mlog_errno(status);
1438 goto bail;
1439 }
1440 }
1441
Jan Karaa90714c2008-10-09 19:38:40 +02001442 handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb));
Mark Fashehccd979b2005-12-15 14:31:24 -08001443 if (IS_ERR(handle)) {
1444 status = PTR_ERR(handle);
1445 handle = NULL;
1446 mlog_errno(status);
1447 goto bail;
1448 }
1449
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001450 if (target_exists) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001451 if (S_ISDIR(new_inode->i_mode)) {
Mark Fashehb80b5492009-02-18 11:41:38 -08001452 if (new_inode->i_nlink != 2 ||
1453 !ocfs2_empty_dir(new_inode)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001454 status = -ENOTEMPTY;
1455 goto bail;
1456 }
1457 }
Joel Becker0cf2f762009-02-12 16:41:25 -08001458 status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode),
1459 newfe_bh,
Joel Becker13723d02008-10-17 19:25:01 -07001460 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -08001461 if (status < 0) {
1462 mlog_errno(status);
1463 goto bail;
1464 }
1465
Mark Fashehccd979b2005-12-15 14:31:24 -08001466 /* change the dirent to point to the correct inode */
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001467 status = ocfs2_update_entry(new_dir, handle, &target_lookup_res,
1468 old_inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001469 if (status < 0) {
1470 mlog_errno(status);
1471 goto bail;
1472 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001473 new_dir->i_version++;
Mark Fashehccd979b2005-12-15 14:31:24 -08001474
1475 if (S_ISDIR(new_inode->i_mode))
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001476 ocfs2_set_links_count(newfe, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001477 else
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001478 ocfs2_add_links_count(newfe, -1);
Joel Beckerec20cec2010-03-19 14:13:52 -07001479 ocfs2_journal_dirty(handle, newfe_bh);
alex chen5fb1beb2014-06-23 13:22:07 -07001480 if (should_add_orphan) {
1481 status = ocfs2_orphan_add(osb, handle, new_inode,
1482 newfe_bh, orphan_name,
1483 &orphan_insert, orphan_dir);
1484 if (status < 0) {
1485 mlog_errno(status);
1486 goto bail;
1487 }
1488 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001489 } else {
1490 /* if the name was not found in new_dir, add it now */
1491 status = ocfs2_add_entry(handle, new_dentry, old_inode,
1492 OCFS2_I(old_inode)->ip_blkno,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001493 new_dir_bh, &target_insert);
Mark Fashehccd979b2005-12-15 14:31:24 -08001494 }
1495
1496 old_inode->i_ctime = CURRENT_TIME;
1497 mark_inode_dirty(old_inode);
Sunil Mushran480214d2007-08-06 15:11:56 -07001498
Joel Becker0cf2f762009-02-12 16:41:25 -08001499 status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode),
1500 old_inode_bh,
Joel Becker13723d02008-10-17 19:25:01 -07001501 OCFS2_JOURNAL_ACCESS_WRITE);
Sunil Mushran480214d2007-08-06 15:11:56 -07001502 if (status >= 0) {
1503 old_di = (struct ocfs2_dinode *) old_inode_bh->b_data;
1504
1505 old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec);
1506 old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec);
Joel Beckerec20cec2010-03-19 14:13:52 -07001507 ocfs2_journal_dirty(handle, old_inode_bh);
Sunil Mushran480214d2007-08-06 15:11:56 -07001508 } else
1509 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001510
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001511 /*
1512 * Now that the name has been added to new_dir, remove the old name.
1513 *
1514 * We don't keep any directory entry context around until now
1515 * because the insert might have changed the type of directory
1516 * we're dealing with.
1517 */
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001518 status = ocfs2_find_entry(old_dentry->d_name.name,
1519 old_dentry->d_name.len, old_dir,
1520 &old_entry_lookup);
1521 if (status)
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001522 goto bail;
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001523
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001524 status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08001525 if (status < 0) {
1526 mlog_errno(status);
1527 goto bail;
1528 }
1529
1530 if (new_inode) {
Miklos Szeredi6d6b77f2011-10-28 14:13:28 +02001531 drop_nlink(new_inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001532 new_inode->i_ctime = CURRENT_TIME;
1533 }
1534 old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME;
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001535
1536 if (update_dot_dot) {
1537 status = ocfs2_update_entry(old_inode, handle,
1538 &old_inode_dot_dot_res, new_dir);
Miklos Szeredi6d6b77f2011-10-28 14:13:28 +02001539 drop_nlink(old_dir);
Mark Fashehccd979b2005-12-15 14:31:24 -08001540 if (new_inode) {
Miklos Szeredi6d6b77f2011-10-28 14:13:28 +02001541 drop_nlink(new_inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001542 } else {
Dave Hansend8c76e62006-09-30 23:29:04 -07001543 inc_nlink(new_dir);
Mark Fashehccd979b2005-12-15 14:31:24 -08001544 mark_inode_dirty(new_dir);
1545 }
1546 }
1547 mark_inode_dirty(old_dir);
Mark Fasheh592282c2007-01-02 17:59:40 -08001548 ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh);
1549 if (new_inode) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001550 mark_inode_dirty(new_inode);
Mark Fasheh592282c2007-01-02 17:59:40 -08001551 ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh);
1552 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001553
Mark Fasheh592282c2007-01-02 17:59:40 -08001554 if (old_dir != new_dir) {
1555 /* Keep the same times on both directories.*/
1556 new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime;
1557
1558 /*
1559 * This will also pick up the i_nlink change from the
1560 * block above.
1561 */
1562 ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh);
1563 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001564
1565 if (old_dir_nlink != old_dir->i_nlink) {
1566 if (!old_dir_bh) {
1567 mlog(ML_ERROR, "need to change nlink for old dir "
Mark Fashehb06970532006-03-03 10:24:33 -08001568 "%llu from %d to %d but bh is NULL!\n",
1569 (unsigned long long)OCFS2_I(old_dir)->ip_blkno,
1570 (int)old_dir_nlink, old_dir->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -08001571 } else {
1572 struct ocfs2_dinode *fe;
Joel Becker0cf2f762009-02-12 16:41:25 -08001573 status = ocfs2_journal_access_di(handle,
1574 INODE_CACHE(old_dir),
1575 old_dir_bh,
1576 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -08001577 fe = (struct ocfs2_dinode *) old_dir_bh->b_data;
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001578 ocfs2_set_links_count(fe, old_dir->i_nlink);
Joel Beckerec20cec2010-03-19 14:13:52 -07001579 ocfs2_journal_dirty(handle, old_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08001580 }
1581 }
Mark Fasheh379dfe92006-09-08 14:21:03 -07001582 ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir);
Mark Fashehccd979b2005-12-15 14:31:24 -08001583 status = 0;
1584bail:
1585 if (rename_lock)
1586 ocfs2_rename_unlock(osb);
1587
1588 if (handle)
Mark Fasheh02dc1af2006-10-09 16:48:10 -07001589 ocfs2_commit_trans(osb, handle);
Mark Fashehccd979b2005-12-15 14:31:24 -08001590
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001591 if (parents_locked)
1592 ocfs2_double_unlock(old_dir, new_dir);
1593
1594 if (old_child_locked)
Mark Fashehe63aecb62007-10-18 15:30:42 -07001595 ocfs2_inode_unlock(old_inode, 1);
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001596
1597 if (new_child_locked)
Mark Fashehe63aecb62007-10-18 15:30:42 -07001598 ocfs2_inode_unlock(new_inode, 1);
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001599
Mark Fasheh5098c272006-10-05 18:12:57 -07001600 if (orphan_dir) {
1601 /* This was locked for us in ocfs2_prepare_orphan_dir() */
Mark Fashehe63aecb62007-10-18 15:30:42 -07001602 ocfs2_inode_unlock(orphan_dir, 1);
Mark Fasheh5098c272006-10-05 18:12:57 -07001603 mutex_unlock(&orphan_dir->i_mutex);
1604 iput(orphan_dir);
1605 }
1606
Mark Fashehccd979b2005-12-15 14:31:24 -08001607 if (new_inode)
1608 sync_mapping_buffers(old_inode->i_mapping);
1609
1610 if (new_inode)
1611 iput(new_inode);
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001612
1613 ocfs2_free_dir_lookup_result(&target_lookup_res);
1614 ocfs2_free_dir_lookup_result(&old_entry_lookup);
1615 ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res);
1616 ocfs2_free_dir_lookup_result(&orphan_insert);
1617 ocfs2_free_dir_lookup_result(&target_insert);
1618
Mark Fasheha81cb882008-10-07 14:25:16 -07001619 brelse(newfe_bh);
1620 brelse(old_inode_bh);
1621 brelse(old_dir_bh);
1622 brelse(new_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08001623
Tao Mac1e8d352011-03-07 16:43:21 +08001624 if (status)
1625 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001626
1627 return status;
1628}
1629
1630/*
1631 * we expect i_size = strlen(symname). Copy symname into the file
1632 * data, including the null terminator.
1633 */
1634static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
Mark Fasheh1fabe142006-10-09 18:11:45 -07001635 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -08001636 struct inode *inode,
1637 const char *symname)
1638{
1639 struct buffer_head **bhs = NULL;
1640 const char *c;
1641 struct super_block *sb = osb->sb;
Mark Fasheh4f902c32007-03-09 16:26:50 -08001642 u64 p_blkno, p_blocks;
Mark Fashehccd979b2005-12-15 14:31:24 -08001643 int virtual, blocks, status, i, bytes_left;
1644
1645 bytes_left = i_size_read(inode) + 1;
1646 /* we can't trust i_blocks because we're actually going to
1647 * write i_size + 1 bytes. */
1648 blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
1649
Tao Ma8990e442011-02-23 22:45:26 +08001650 trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks,
1651 i_size_read(inode), blocks);
Mark Fashehccd979b2005-12-15 14:31:24 -08001652
1653 /* Sanity check -- make sure we're going to fit. */
1654 if (bytes_left >
1655 ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) {
1656 status = -EIO;
1657 mlog_errno(status);
1658 goto bail;
1659 }
1660
1661 bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL);
1662 if (!bhs) {
1663 status = -ENOMEM;
1664 mlog_errno(status);
1665 goto bail;
1666 }
1667
Mark Fasheh49cb8d22007-03-09 16:21:46 -08001668 status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks,
1669 NULL);
Mark Fashehccd979b2005-12-15 14:31:24 -08001670 if (status < 0) {
1671 mlog_errno(status);
1672 goto bail;
1673 }
1674
1675 /* links can never be larger than one cluster so we know this
1676 * is all going to be contiguous, but do a sanity check
1677 * anyway. */
1678 if ((p_blocks << sb->s_blocksize_bits) < bytes_left) {
1679 status = -EIO;
1680 mlog_errno(status);
1681 goto bail;
1682 }
1683
1684 virtual = 0;
1685 while(bytes_left > 0) {
1686 c = &symname[virtual * sb->s_blocksize];
1687
1688 bhs[virtual] = sb_getblk(sb, p_blkno);
1689 if (!bhs[virtual]) {
1690 status = -ENOMEM;
1691 mlog_errno(status);
1692 goto bail;
1693 }
Joel Becker8cb471e2009-02-10 20:00:41 -08001694 ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode),
1695 bhs[virtual]);
Mark Fashehccd979b2005-12-15 14:31:24 -08001696
Joel Becker0cf2f762009-02-12 16:41:25 -08001697 status = ocfs2_journal_access(handle, INODE_CACHE(inode),
1698 bhs[virtual],
Mark Fashehccd979b2005-12-15 14:31:24 -08001699 OCFS2_JOURNAL_ACCESS_CREATE);
1700 if (status < 0) {
1701 mlog_errno(status);
1702 goto bail;
1703 }
1704
1705 memset(bhs[virtual]->b_data, 0, sb->s_blocksize);
1706
1707 memcpy(bhs[virtual]->b_data, c,
1708 (bytes_left > sb->s_blocksize) ? sb->s_blocksize :
1709 bytes_left);
1710
Joel Beckerec20cec2010-03-19 14:13:52 -07001711 ocfs2_journal_dirty(handle, bhs[virtual]);
Mark Fashehccd979b2005-12-15 14:31:24 -08001712
1713 virtual++;
1714 p_blkno++;
1715 bytes_left -= sb->s_blocksize;
1716 }
1717
1718 status = 0;
1719bail:
1720
1721 if (bhs) {
1722 for(i = 0; i < blocks; i++)
Mark Fasheha81cb882008-10-07 14:25:16 -07001723 brelse(bhs[i]);
Mark Fashehccd979b2005-12-15 14:31:24 -08001724 kfree(bhs);
1725 }
1726
Tao Mac1e8d352011-03-07 16:43:21 +08001727 if (status)
1728 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001729 return status;
1730}
1731
1732static int ocfs2_symlink(struct inode *dir,
1733 struct dentry *dentry,
1734 const char *symname)
1735{
1736 int status, l, credits;
1737 u64 newsize;
1738 struct ocfs2_super *osb = NULL;
1739 struct inode *inode = NULL;
1740 struct super_block *sb;
1741 struct buffer_head *new_fe_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001742 struct buffer_head *parent_fe_bh = NULL;
1743 struct ocfs2_dinode *fe = NULL;
1744 struct ocfs2_dinode *dirfe;
Mark Fasheh1fabe142006-10-09 18:11:45 -07001745 handle_t *handle = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001746 struct ocfs2_alloc_context *inode_ac = NULL;
1747 struct ocfs2_alloc_context *data_ac = NULL;
Tiger Yang534eadd2008-11-14 11:16:41 +08001748 struct ocfs2_alloc_context *xattr_ac = NULL;
1749 int want_clusters = 0;
1750 int xattr_credits = 0;
1751 struct ocfs2_security_xattr_info si = {
1752 .enable = 1,
1753 };
Jan Karaa90714c2008-10-09 19:38:40 +02001754 int did_quota = 0, did_quota_inode = 0;
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001755 struct ocfs2_dir_lookup_result lookup = { NULL, };
Joel Becker547ba7c2010-05-10 11:56:52 -07001756 sigset_t oldset;
1757 int did_block_signals = 0;
jiangyiwen595297a2014-06-23 13:22:09 -07001758 struct ocfs2_dentry_lock *dl = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001759
Tao Ma8990e442011-02-23 22:45:26 +08001760 trace_ocfs2_symlink_begin(dir, dentry, symname,
1761 dentry->d_name.len, dentry->d_name.name);
Mark Fashehccd979b2005-12-15 14:31:24 -08001762
Christoph Hellwig871a2932010-03-03 09:05:07 -05001763 dquot_initialize(dir);
Christoph Hellwig907f4552010-03-03 09:05:06 -05001764
Mark Fashehccd979b2005-12-15 14:31:24 -08001765 sb = dir->i_sb;
1766 osb = OCFS2_SB(sb);
1767
1768 l = strlen(symname) + 1;
1769
1770 credits = ocfs2_calc_symlink_credits(sb);
1771
Mark Fashehccd979b2005-12-15 14:31:24 -08001772 /* lock the parent directory */
Mark Fashehe63aecb62007-10-18 15:30:42 -07001773 status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001774 if (status < 0) {
1775 if (status != -ENOENT)
1776 mlog_errno(status);
Mark Fasheh6d8fc402006-10-06 11:54:33 -07001777 return status;
Mark Fashehccd979b2005-12-15 14:31:24 -08001778 }
1779
1780 dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001781 if (!ocfs2_read_links_count(dirfe)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001782 /* can't make a file in a deleted directory. */
1783 status = -ENOENT;
1784 goto bail;
1785 }
1786
1787 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
1788 dentry->d_name.len);
1789 if (status)
1790 goto bail;
1791
1792 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
1793 dentry->d_name.name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001794 dentry->d_name.len, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08001795 if (status < 0) {
1796 mlog_errno(status);
1797 goto bail;
1798 }
1799
Mark Fashehda5cbf22006-10-06 18:34:35 -07001800 status = ocfs2_reserve_new_inode(osb, &inode_ac);
Mark Fashehccd979b2005-12-15 14:31:24 -08001801 if (status < 0) {
1802 if (status != -ENOSPC)
1803 mlog_errno(status);
1804 goto bail;
1805 }
1806
Tiger Yangf5d36202008-11-14 11:15:44 +08001807 inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO);
1808 if (!inode) {
1809 status = -ENOMEM;
1810 mlog_errno(status);
1811 goto bail;
1812 }
1813
Tiger Yang534eadd2008-11-14 11:16:41 +08001814 /* get security xattr */
Eric Paris2a7dba32011-02-01 11:05:39 -05001815 status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si);
Tiger Yang534eadd2008-11-14 11:16:41 +08001816 if (status) {
1817 if (status == -EOPNOTSUPP)
1818 si.enable = 0;
1819 else {
1820 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001821 goto bail;
1822 }
1823 }
1824
Tiger Yang534eadd2008-11-14 11:16:41 +08001825 /* calculate meta data/clusters for setting security xattr */
1826 if (si.enable) {
1827 status = ocfs2_calc_security_init(dir, &si, &want_clusters,
1828 &xattr_credits, &xattr_ac);
1829 if (status < 0) {
1830 mlog_errno(status);
1831 goto bail;
1832 }
1833 }
1834
1835 /* don't reserve bitmap space for fast symlinks. */
1836 if (l > ocfs2_fast_symlink_chars(sb))
1837 want_clusters += 1;
1838
1839 status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
1840 if (status < 0) {
1841 if (status != -ENOSPC)
1842 mlog_errno(status);
1843 goto bail;
1844 }
1845
1846 handle = ocfs2_start_trans(osb, credits + xattr_credits);
Mark Fashehccd979b2005-12-15 14:31:24 -08001847 if (IS_ERR(handle)) {
1848 status = PTR_ERR(handle);
1849 handle = NULL;
1850 mlog_errno(status);
1851 goto bail;
1852 }
1853
Joel Becker547ba7c2010-05-10 11:56:52 -07001854 /* Starting to change things, restart is no longer possible. */
1855 ocfs2_block_signals(&oldset);
1856 did_block_signals = 1;
1857
Christoph Hellwig63936dd2010-03-03 09:05:01 -05001858 status = dquot_alloc_inode(inode);
1859 if (status)
Jan Karaa90714c2008-10-09 19:38:40 +02001860 goto bail;
Jan Karaa90714c2008-10-09 19:38:40 +02001861 did_quota_inode = 1;
1862
Tao Ma8990e442011-02-23 22:45:26 +08001863 trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len,
1864 dentry->d_name.name,
1865 (unsigned long long)OCFS2_I(dir)->ip_blkno,
1866 inode->i_mode);
Tao Ma19bd3412009-08-18 11:44:10 +08001867
1868 status = ocfs2_mknod_locked(osb, dir, inode,
Tiger Yangf5d36202008-11-14 11:15:44 +08001869 0, &new_fe_bh, parent_fe_bh, handle,
1870 inode_ac);
Mark Fashehccd979b2005-12-15 14:31:24 -08001871 if (status < 0) {
1872 mlog_errno(status);
1873 goto bail;
1874 }
1875
1876 fe = (struct ocfs2_dinode *) new_fe_bh->b_data;
1877 inode->i_rdev = 0;
1878 newsize = l - 1;
Al Viroea022dfb2012-05-03 10:14:29 -04001879 inode->i_op = &ocfs2_symlink_inode_operations;
Mark Fashehccd979b2005-12-15 14:31:24 -08001880 if (l > ocfs2_fast_symlink_chars(sb)) {
Mark Fashehdcd05382007-01-16 11:32:23 -08001881 u32 offset = 0;
1882
Christoph Hellwig5dd40562010-03-03 09:05:00 -05001883 status = dquot_alloc_space_nodirty(inode,
1884 ocfs2_clusters_to_bytes(osb->sb, 1));
1885 if (status)
Jan Karaa90714c2008-10-09 19:38:40 +02001886 goto bail;
Jan Karaa90714c2008-10-09 19:38:40 +02001887 did_quota = 1;
Al Viroea022dfb2012-05-03 10:14:29 -04001888 inode->i_mapping->a_ops = &ocfs2_aops;
Tao Ma0eb8d472008-08-18 17:38:45 +08001889 status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0,
1890 new_fe_bh,
1891 handle, data_ac, NULL,
1892 NULL);
Mark Fashehccd979b2005-12-15 14:31:24 -08001893 if (status < 0) {
1894 if (status != -ENOSPC && status != -EINTR) {
Mark Fashehb06970532006-03-03 10:24:33 -08001895 mlog(ML_ERROR,
1896 "Failed to extend file to %llu\n",
1897 (unsigned long long)newsize);
Mark Fashehccd979b2005-12-15 14:31:24 -08001898 mlog_errno(status);
1899 status = -ENOSPC;
1900 }
1901 goto bail;
1902 }
1903 i_size_write(inode, newsize);
Mark Fasheh8110b072007-03-22 16:53:23 -07001904 inode->i_blocks = ocfs2_inode_sector_count(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001905 } else {
Al Viroea022dfb2012-05-03 10:14:29 -04001906 inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops;
Mark Fashehccd979b2005-12-15 14:31:24 -08001907 memcpy((char *) fe->id2.i_symlink, symname, l);
1908 i_size_write(inode, newsize);
1909 inode->i_blocks = 0;
1910 }
1911
1912 status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh);
1913 if (status < 0) {
1914 mlog_errno(status);
1915 goto bail;
1916 }
1917
1918 if (!ocfs2_inode_is_fast_symlink(inode)) {
1919 status = ocfs2_create_symlink_data(osb, handle, inode,
1920 symname);
1921 if (status < 0) {
1922 mlog_errno(status);
1923 goto bail;
1924 }
1925 }
1926
Tiger Yang534eadd2008-11-14 11:16:41 +08001927 if (si.enable) {
1928 status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
1929 xattr_ac, data_ac);
1930 if (status < 0) {
1931 mlog_errno(status);
1932 goto bail;
1933 }
1934 }
1935
Mark Fasheha9743fc2010-04-23 11:42:22 -07001936 /*
1937 * Do this before adding the entry to the directory. We add
1938 * also set d_op after success so that ->d_iput() will cleanup
1939 * the dentry lock even if ocfs2_add_entry() fails below.
1940 */
1941 status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
1942 if (status) {
1943 mlog_errno(status);
1944 goto bail;
1945 }
Mark Fasheha9743fc2010-04-23 11:42:22 -07001946
jiangyiwen595297a2014-06-23 13:22:09 -07001947 dl = dentry->d_fsdata;
1948
Mark Fashehccd979b2005-12-15 14:31:24 -08001949 status = ocfs2_add_entry(handle, dentry, inode,
1950 le64_to_cpu(fe->i_blkno), parent_fe_bh,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001951 &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08001952 if (status < 0) {
1953 mlog_errno(status);
1954 goto bail;
1955 }
1956
1957 insert_inode_hash(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001958 d_instantiate(dentry, inode);
1959bail:
Jan Karaa90714c2008-10-09 19:38:40 +02001960 if (status < 0 && did_quota)
Christoph Hellwig5dd40562010-03-03 09:05:00 -05001961 dquot_free_space_nodirty(inode,
Jan Karaa90714c2008-10-09 19:38:40 +02001962 ocfs2_clusters_to_bytes(osb->sb, 1));
1963 if (status < 0 && did_quota_inode)
Christoph Hellwig63936dd2010-03-03 09:05:01 -05001964 dquot_free_inode(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001965 if (handle)
Mark Fasheh02dc1af2006-10-09 16:48:10 -07001966 ocfs2_commit_trans(osb, handle);
Mark Fasheh6d8fc402006-10-06 11:54:33 -07001967
Mark Fashehe63aecb62007-10-18 15:30:42 -07001968 ocfs2_inode_unlock(dir, 1);
Joel Becker547ba7c2010-05-10 11:56:52 -07001969 if (did_block_signals)
1970 ocfs2_unblock_signals(&oldset);
Mark Fasheh6d8fc402006-10-06 11:54:33 -07001971
Mark Fasheha81cb882008-10-07 14:25:16 -07001972 brelse(new_fe_bh);
1973 brelse(parent_fe_bh);
Tiger Yang534eadd2008-11-14 11:16:41 +08001974 kfree(si.value);
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001975 ocfs2_free_dir_lookup_result(&lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08001976 if (inode_ac)
1977 ocfs2_free_alloc_context(inode_ac);
1978 if (data_ac)
1979 ocfs2_free_alloc_context(data_ac);
Tiger Yang534eadd2008-11-14 11:16:41 +08001980 if (xattr_ac)
1981 ocfs2_free_alloc_context(xattr_ac);
Tiger Yangf5d36202008-11-14 11:15:44 +08001982 if ((status < 0) && inode) {
jiangyiwen595297a2014-06-23 13:22:09 -07001983 if (dl)
1984 ocfs2_cleanup_add_entry_failure(osb, dentry, inode);
1985
Li Dongyangab41fdc2010-04-22 16:11:25 +08001986 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR;
Tiger Yangf5d36202008-11-14 11:15:44 +08001987 clear_nlink(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001988 iput(inode);
Tiger Yangf5d36202008-11-14 11:15:44 +08001989 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001990
Tao Mac1e8d352011-03-07 16:43:21 +08001991 if (status)
1992 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001993
1994 return status;
1995}
1996
Mark Fashehccd979b2005-12-15 14:31:24 -08001997static int ocfs2_blkno_stringify(u64 blkno, char *name)
1998{
1999 int status, namelen;
2000
Mark Fashehb06970532006-03-03 10:24:33 -08002001 namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx",
2002 (long long)blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08002003 if (namelen <= 0) {
2004 if (namelen)
2005 status = namelen;
2006 else
2007 status = -EINVAL;
2008 mlog_errno(status);
2009 goto bail;
2010 }
2011 if (namelen != OCFS2_ORPHAN_NAMELEN) {
2012 status = -EINVAL;
2013 mlog_errno(status);
2014 goto bail;
2015 }
2016
Tao Ma8990e442011-02-23 22:45:26 +08002017 trace_ocfs2_blkno_stringify(blkno, name, namelen);
Mark Fashehccd979b2005-12-15 14:31:24 -08002018
2019 status = 0;
2020bail:
Tao Mac1e8d352011-03-07 16:43:21 +08002021 if (status < 0)
2022 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08002023 return status;
2024}
2025
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002026static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb,
2027 struct inode **ret_orphan_dir,
2028 struct buffer_head **ret_orphan_dir_bh)
2029{
2030 struct inode *orphan_dir_inode;
2031 struct buffer_head *orphan_dir_bh = NULL;
2032 int ret = 0;
2033
2034 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
2035 ORPHAN_DIR_SYSTEM_INODE,
2036 osb->slot_num);
2037 if (!orphan_dir_inode) {
2038 ret = -ENOENT;
2039 mlog_errno(ret);
2040 return ret;
2041 }
2042
2043 mutex_lock(&orphan_dir_inode->i_mutex);
2044
2045 ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
2046 if (ret < 0) {
2047 mutex_unlock(&orphan_dir_inode->i_mutex);
2048 iput(orphan_dir_inode);
2049
2050 mlog_errno(ret);
2051 return ret;
2052 }
2053
2054 *ret_orphan_dir = orphan_dir_inode;
2055 *ret_orphan_dir_bh = orphan_dir_bh;
2056
2057 return 0;
2058}
2059
2060static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode,
2061 struct buffer_head *orphan_dir_bh,
2062 u64 blkno,
2063 char *name,
2064 struct ocfs2_dir_lookup_result *lookup)
2065{
2066 int ret;
2067 struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb);
2068
2069 ret = ocfs2_blkno_stringify(blkno, name);
2070 if (ret < 0) {
2071 mlog_errno(ret);
2072 return ret;
2073 }
2074
2075 ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode,
2076 orphan_dir_bh, name,
2077 OCFS2_ORPHAN_NAMELEN, lookup);
2078 if (ret < 0) {
2079 mlog_errno(ret);
2080 return ret;
2081 }
2082
2083 return 0;
2084}
2085
2086/**
2087 * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for
2088 * insertion of an orphan.
2089 * @osb: ocfs2 file system
2090 * @ret_orphan_dir: Orphan dir inode - returned locked!
2091 * @blkno: Actual block number of the inode to be inserted into orphan dir.
2092 * @lookup: dir lookup result, to be passed back into functions like
2093 * ocfs2_orphan_add
2094 *
2095 * Returns zero on success and the ret_orphan_dir, name and lookup
2096 * fields will be populated.
2097 *
2098 * Returns non-zero on failure.
2099 */
Mark Fashehccd979b2005-12-15 14:31:24 -08002100static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
Mark Fasheh5098c272006-10-05 18:12:57 -07002101 struct inode **ret_orphan_dir,
Tao Ma19bd3412009-08-18 11:44:10 +08002102 u64 blkno,
Mark Fashehccd979b2005-12-15 14:31:24 -08002103 char *name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002104 struct ocfs2_dir_lookup_result *lookup)
Mark Fashehccd979b2005-12-15 14:31:24 -08002105{
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002106 struct inode *orphan_dir_inode = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08002107 struct buffer_head *orphan_dir_bh = NULL;
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002108 int ret = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08002109
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002110 ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode,
2111 &orphan_dir_bh);
2112 if (ret < 0) {
2113 mlog_errno(ret);
2114 return ret;
Mark Fashehccd979b2005-12-15 14:31:24 -08002115 }
2116
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002117 ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh,
2118 blkno, name, lookup);
2119 if (ret < 0) {
2120 mlog_errno(ret);
2121 goto out;
Mark Fashehccd979b2005-12-15 14:31:24 -08002122 }
2123
Mark Fasheh5098c272006-10-05 18:12:57 -07002124 *ret_orphan_dir = orphan_dir_inode;
2125
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002126out:
2127 brelse(orphan_dir_bh);
2128
2129 if (ret) {
2130 ocfs2_inode_unlock(orphan_dir_inode, 1);
Mark Fasheh5098c272006-10-05 18:12:57 -07002131 mutex_unlock(&orphan_dir_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -08002132 iput(orphan_dir_inode);
Mark Fasheh5098c272006-10-05 18:12:57 -07002133 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002134
Tao Mac1e8d352011-03-07 16:43:21 +08002135 if (ret)
2136 mlog_errno(ret);
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002137 return ret;
Mark Fashehccd979b2005-12-15 14:31:24 -08002138}
2139
2140static int ocfs2_orphan_add(struct ocfs2_super *osb,
Mark Fasheh1fabe142006-10-09 18:11:45 -07002141 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -08002142 struct inode *inode,
Tristan Ye3939fda2010-03-19 09:21:09 +08002143 struct buffer_head *fe_bh,
Mark Fashehccd979b2005-12-15 14:31:24 -08002144 char *name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002145 struct ocfs2_dir_lookup_result *lookup,
Mark Fasheh5098c272006-10-05 18:12:57 -07002146 struct inode *orphan_dir_inode)
Mark Fashehccd979b2005-12-15 14:31:24 -08002147{
Mark Fashehccd979b2005-12-15 14:31:24 -08002148 struct buffer_head *orphan_dir_bh = NULL;
2149 int status = 0;
2150 struct ocfs2_dinode *orphan_fe;
Tristan Ye3939fda2010-03-19 09:21:09 +08002151 struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data;
Mark Fashehccd979b2005-12-15 14:31:24 -08002152
Tao Ma8990e442011-02-23 22:45:26 +08002153 trace_ocfs2_orphan_add_begin(
2154 (unsigned long long)OCFS2_I(inode)->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08002155
Joel Beckerb657c952008-11-13 14:49:11 -08002156 status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08002157 if (status < 0) {
2158 mlog_errno(status);
2159 goto leave;
2160 }
2161
Joel Becker0cf2f762009-02-12 16:41:25 -08002162 status = ocfs2_journal_access_di(handle,
2163 INODE_CACHE(orphan_dir_inode),
2164 orphan_dir_bh,
Joel Becker13723d02008-10-17 19:25:01 -07002165 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -08002166 if (status < 0) {
2167 mlog_errno(status);
2168 goto leave;
2169 }
2170
Tristan Ye3939fda2010-03-19 09:21:09 +08002171 /*
2172 * We're going to journal the change of i_flags and i_orphaned_slot.
2173 * It's safe anyway, though some callers may duplicate the journaling.
2174 * Journaling within the func just make the logic look more
2175 * straightforward.
2176 */
2177 status = ocfs2_journal_access_di(handle,
2178 INODE_CACHE(inode),
2179 fe_bh,
2180 OCFS2_JOURNAL_ACCESS_WRITE);
2181 if (status < 0) {
2182 mlog_errno(status);
2183 goto leave;
2184 }
2185
Younger Liuea454662013-07-03 15:00:58 -07002186 /* we're a cluster, and nlink can change on disk from
2187 * underneath us... */
2188 orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
2189 if (S_ISDIR(inode->i_mode))
2190 ocfs2_add_links_count(orphan_fe, 1);
2191 set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe));
2192 ocfs2_journal_dirty(handle, orphan_dir_bh);
2193
2194 status = __ocfs2_add_entry(handle, orphan_dir_inode, name,
2195 OCFS2_ORPHAN_NAMELEN, inode,
2196 OCFS2_I(inode)->ip_blkno,
2197 orphan_dir_bh, lookup);
2198 if (status < 0) {
2199 mlog_errno(status);
2200 goto rollback;
2201 }
2202
Joseph Qi13eb9882013-07-03 15:00:48 -07002203 fe->i_flags |= cpu_to_le32(OCFS2_ORPHANED_FL);
Li Dongyangd4cd1872010-04-22 16:11:19 +08002204 OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR;
Mark Fashehccd979b2005-12-15 14:31:24 -08002205
2206 /* Record which orphan dir our inode now resides
2207 * in. delete_inode will use this to determine which orphan
2208 * dir to lock. */
Tiger Yang50008632007-03-20 16:01:38 -07002209 fe->i_orphaned_slot = cpu_to_le16(osb->slot_num);
Mark Fashehccd979b2005-12-15 14:31:24 -08002210
Tristan Ye3939fda2010-03-19 09:21:09 +08002211 ocfs2_journal_dirty(handle, fe_bh);
2212
Tao Ma8990e442011-02-23 22:45:26 +08002213 trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno,
2214 osb->slot_num);
Mark Fashehccd979b2005-12-15 14:31:24 -08002215
Younger Liuea454662013-07-03 15:00:58 -07002216rollback:
2217 if (status < 0) {
2218 if (S_ISDIR(inode->i_mode))
2219 ocfs2_add_links_count(orphan_fe, -1);
2220 set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe));
2221 }
2222
Mark Fashehccd979b2005-12-15 14:31:24 -08002223leave:
Mark Fasheha81cb882008-10-07 14:25:16 -07002224 brelse(orphan_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08002225
Mark Fashehccd979b2005-12-15 14:31:24 -08002226 return status;
2227}
2228
2229/* unlike orphan_add, we expect the orphan dir to already be locked here. */
2230int ocfs2_orphan_del(struct ocfs2_super *osb,
Mark Fasheh1fabe142006-10-09 18:11:45 -07002231 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -08002232 struct inode *orphan_dir_inode,
2233 struct inode *inode,
2234 struct buffer_head *orphan_dir_bh)
2235{
2236 char name[OCFS2_ORPHAN_NAMELEN + 1];
2237 struct ocfs2_dinode *orphan_fe;
2238 int status = 0;
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002239 struct ocfs2_dir_lookup_result lookup = { NULL, };
Mark Fashehccd979b2005-12-15 14:31:24 -08002240
Mark Fashehccd979b2005-12-15 14:31:24 -08002241 status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name);
2242 if (status < 0) {
2243 mlog_errno(status);
2244 goto leave;
2245 }
2246
Tao Ma8990e442011-02-23 22:45:26 +08002247 trace_ocfs2_orphan_del(
2248 (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno,
2249 name, OCFS2_ORPHAN_NAMELEN);
Mark Fashehccd979b2005-12-15 14:31:24 -08002250
2251 /* find it's spot in the orphan directory */
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002252 status = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, orphan_dir_inode,
2253 &lookup);
2254 if (status) {
Mark Fashehccd979b2005-12-15 14:31:24 -08002255 mlog_errno(status);
2256 goto leave;
2257 }
2258
2259 /* remove it from the orphan directory */
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002260 status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08002261 if (status < 0) {
2262 mlog_errno(status);
2263 goto leave;
2264 }
2265
Joel Becker0cf2f762009-02-12 16:41:25 -08002266 status = ocfs2_journal_access_di(handle,
2267 INODE_CACHE(orphan_dir_inode),
2268 orphan_dir_bh,
Joel Becker13723d02008-10-17 19:25:01 -07002269 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -08002270 if (status < 0) {
2271 mlog_errno(status);
2272 goto leave;
2273 }
2274
2275 /* do the i_nlink dance! :) */
2276 orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
2277 if (S_ISDIR(inode->i_mode))
Mark Fasheh198a1ca2008-11-20 17:54:57 -08002278 ocfs2_add_links_count(orphan_fe, -1);
Miklos Szeredibfe86842011-10-28 14:13:29 +02002279 set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe));
Joel Beckerec20cec2010-03-19 14:13:52 -07002280 ocfs2_journal_dirty(handle, orphan_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08002281
2282leave:
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002283 ocfs2_free_dir_lookup_result(&lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08002284
Tao Mac1e8d352011-03-07 16:43:21 +08002285 if (status)
2286 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08002287 return status;
2288}
2289
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002290/**
Lucas De Marchi25985ed2011-03-30 22:57:33 -03002291 * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to receive a newly
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002292 * allocated file. This is different from the typical 'add to orphan dir'
2293 * operation in that the inode does not yet exist. This is a problem because
2294 * the orphan dir stringifies the inode block number to come up with it's
2295 * dirent. Obviously if the inode does not yet exist we have a chicken and egg
2296 * problem. This function works around it by calling deeper into the orphan
2297 * and suballoc code than other callers. Use this only by necessity.
2298 * @dir: The directory which this inode will ultimately wind up under - not the
2299 * orphan dir!
2300 * @dir_bh: buffer_head the @dir inode block
2301 * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled
2302 * with the string to be used for orphan dirent. Pass back to the orphan dir
2303 * code.
2304 * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan
2305 * dir code.
2306 * @ret_di_blkno: block number where the new inode will be allocated.
2307 * @orphan_insert: Dir insert context to be passed back into orphan dir code.
2308 * @ret_inode_ac: Inode alloc context to be passed back to the allocator.
2309 *
2310 * Returns zero on success and the ret_orphan_dir, name and lookup
2311 * fields will be populated.
2312 *
2313 * Returns non-zero on failure.
2314 */
2315static int ocfs2_prep_new_orphaned_file(struct inode *dir,
2316 struct buffer_head *dir_bh,
2317 char *orphan_name,
2318 struct inode **ret_orphan_dir,
2319 u64 *ret_di_blkno,
2320 struct ocfs2_dir_lookup_result *orphan_insert,
2321 struct ocfs2_alloc_context **ret_inode_ac)
2322{
2323 int ret;
2324 u64 di_blkno;
2325 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
2326 struct inode *orphan_dir = NULL;
2327 struct buffer_head *orphan_dir_bh = NULL;
2328 struct ocfs2_alloc_context *inode_ac = NULL;
2329
2330 ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh);
2331 if (ret < 0) {
2332 mlog_errno(ret);
2333 return ret;
2334 }
2335
2336 /* reserve an inode spot */
2337 ret = ocfs2_reserve_new_inode(osb, &inode_ac);
2338 if (ret < 0) {
2339 if (ret != -ENOSPC)
2340 mlog_errno(ret);
2341 goto out;
2342 }
2343
2344 ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac,
2345 &di_blkno);
2346 if (ret) {
2347 mlog_errno(ret);
2348 goto out;
2349 }
2350
2351 ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh,
2352 di_blkno, orphan_name, orphan_insert);
2353 if (ret < 0) {
2354 mlog_errno(ret);
2355 goto out;
2356 }
2357
2358out:
2359 if (ret == 0) {
2360 *ret_orphan_dir = orphan_dir;
2361 *ret_di_blkno = di_blkno;
2362 *ret_inode_ac = inode_ac;
2363 /*
2364 * orphan_name and orphan_insert are already up to
2365 * date via prepare_orphan_dir
2366 */
2367 } else {
2368 /* Unroll reserve_new_inode* */
2369 if (inode_ac)
2370 ocfs2_free_alloc_context(inode_ac);
2371
2372 /* Unroll orphan dir locking */
2373 mutex_unlock(&orphan_dir->i_mutex);
2374 ocfs2_inode_unlock(orphan_dir, 1);
2375 iput(orphan_dir);
2376 }
2377
2378 brelse(orphan_dir_bh);
2379
Xiaowei.Hu7869e592013-06-12 14:04:41 -07002380 return ret;
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002381}
2382
Tao Mabc13d342009-08-18 11:44:14 +08002383int ocfs2_create_inode_in_orphan(struct inode *dir,
2384 int mode,
2385 struct inode **new_inode)
2386{
2387 int status, did_quota_inode = 0;
2388 struct inode *inode = NULL;
2389 struct inode *orphan_dir = NULL;
2390 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
2391 struct ocfs2_dinode *di = NULL;
2392 handle_t *handle = NULL;
2393 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
2394 struct buffer_head *parent_di_bh = NULL;
2395 struct buffer_head *new_di_bh = NULL;
2396 struct ocfs2_alloc_context *inode_ac = NULL;
2397 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002398 u64 uninitialized_var(di_blkno), suballoc_loc;
2399 u16 suballoc_bit;
Tao Mabc13d342009-08-18 11:44:14 +08002400
2401 status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
2402 if (status < 0) {
2403 if (status != -ENOENT)
2404 mlog_errno(status);
2405 return status;
2406 }
2407
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002408 status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh,
2409 orphan_name, &orphan_dir,
2410 &di_blkno, &orphan_insert, &inode_ac);
Tao Mabc13d342009-08-18 11:44:14 +08002411 if (status < 0) {
2412 if (status != -ENOSPC)
2413 mlog_errno(status);
2414 goto leave;
2415 }
2416
2417 inode = ocfs2_get_init_inode(dir, mode);
2418 if (!inode) {
2419 status = -ENOMEM;
2420 mlog_errno(status);
2421 goto leave;
2422 }
2423
2424 handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0));
2425 if (IS_ERR(handle)) {
2426 status = PTR_ERR(handle);
2427 handle = NULL;
2428 mlog_errno(status);
2429 goto leave;
2430 }
2431
Christoph Hellwig63936dd2010-03-03 09:05:01 -05002432 status = dquot_alloc_inode(inode);
2433 if (status)
Tao Mabc13d342009-08-18 11:44:14 +08002434 goto leave;
Tao Mabc13d342009-08-18 11:44:14 +08002435 did_quota_inode = 1;
2436
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002437 status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac,
2438 &suballoc_loc,
2439 &suballoc_bit, di_blkno);
Tao Mabc13d342009-08-18 11:44:14 +08002440 if (status < 0) {
2441 mlog_errno(status);
2442 goto leave;
2443 }
2444
Miklos Szeredi6d6b77f2011-10-28 14:13:28 +02002445 clear_nlink(inode);
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002446 /* do the real work now. */
2447 status = __ocfs2_mknod_locked(dir, inode,
2448 0, &new_di_bh, parent_di_bh, handle,
2449 inode_ac, di_blkno, suballoc_loc,
2450 suballoc_bit);
Tao Mabc13d342009-08-18 11:44:14 +08002451 if (status < 0) {
2452 mlog_errno(status);
2453 goto leave;
2454 }
2455
2456 di = (struct ocfs2_dinode *)new_di_bh->b_data;
Tristan Ye3939fda2010-03-19 09:21:09 +08002457 status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name,
Tao Mabc13d342009-08-18 11:44:14 +08002458 &orphan_insert, orphan_dir);
2459 if (status < 0) {
2460 mlog_errno(status);
2461 goto leave;
2462 }
2463
2464 /* get open lock so that only nodes can't remove it from orphan dir. */
2465 status = ocfs2_open_lock(inode);
2466 if (status < 0)
2467 mlog_errno(status);
2468
Tao Mac7d260a2009-12-18 10:24:54 +08002469 insert_inode_hash(inode);
Tao Mabc13d342009-08-18 11:44:14 +08002470leave:
2471 if (status < 0 && did_quota_inode)
Christoph Hellwig63936dd2010-03-03 09:05:01 -05002472 dquot_free_inode(inode);
Tao Mabc13d342009-08-18 11:44:14 +08002473 if (handle)
2474 ocfs2_commit_trans(osb, handle);
2475
2476 if (orphan_dir) {
2477 /* This was locked for us in ocfs2_prepare_orphan_dir() */
2478 ocfs2_inode_unlock(orphan_dir, 1);
2479 mutex_unlock(&orphan_dir->i_mutex);
2480 iput(orphan_dir);
2481 }
2482
Tao Mabc13d342009-08-18 11:44:14 +08002483 if ((status < 0) && inode) {
2484 clear_nlink(inode);
2485 iput(inode);
2486 }
2487
2488 if (inode_ac)
2489 ocfs2_free_alloc_context(inode_ac);
2490
2491 brelse(new_di_bh);
2492
2493 if (!status)
2494 *new_inode = inode;
2495
2496 ocfs2_free_dir_lookup_result(&orphan_insert);
2497
2498 ocfs2_inode_unlock(dir, 1);
2499 brelse(parent_di_bh);
2500 return status;
2501}
2502
2503int ocfs2_mv_orphaned_inode_to_new(struct inode *dir,
2504 struct inode *inode,
2505 struct dentry *dentry)
2506{
2507 int status = 0;
2508 struct buffer_head *parent_di_bh = NULL;
2509 handle_t *handle = NULL;
2510 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
2511 struct ocfs2_dinode *dir_di, *di;
2512 struct inode *orphan_dir_inode = NULL;
2513 struct buffer_head *orphan_dir_bh = NULL;
2514 struct buffer_head *di_bh = NULL;
2515 struct ocfs2_dir_lookup_result lookup = { NULL, };
2516
Tao Ma8990e442011-02-23 22:45:26 +08002517 trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry,
2518 dentry->d_name.len, dentry->d_name.name,
2519 (unsigned long long)OCFS2_I(dir)->ip_blkno,
2520 (unsigned long long)OCFS2_I(inode)->ip_blkno);
Tao Mabc13d342009-08-18 11:44:14 +08002521
2522 status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
2523 if (status < 0) {
2524 if (status != -ENOENT)
2525 mlog_errno(status);
2526 return status;
2527 }
2528
2529 dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data;
2530 if (!dir_di->i_links_count) {
2531 /* can't make a file in a deleted directory. */
2532 status = -ENOENT;
2533 goto leave;
2534 }
2535
2536 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
2537 dentry->d_name.len);
2538 if (status)
2539 goto leave;
2540
2541 /* get a spot inside the dir. */
2542 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh,
2543 dentry->d_name.name,
2544 dentry->d_name.len, &lookup);
2545 if (status < 0) {
2546 mlog_errno(status);
2547 goto leave;
2548 }
2549
2550 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
2551 ORPHAN_DIR_SYSTEM_INODE,
2552 osb->slot_num);
2553 if (!orphan_dir_inode) {
2554 status = -EEXIST;
2555 mlog_errno(status);
2556 goto leave;
2557 }
2558
2559 mutex_lock(&orphan_dir_inode->i_mutex);
2560
2561 status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
2562 if (status < 0) {
2563 mlog_errno(status);
2564 mutex_unlock(&orphan_dir_inode->i_mutex);
2565 iput(orphan_dir_inode);
2566 goto leave;
2567 }
2568
2569 status = ocfs2_read_inode_block(inode, &di_bh);
2570 if (status < 0) {
2571 mlog_errno(status);
2572 goto orphan_unlock;
2573 }
2574
2575 handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb));
2576 if (IS_ERR(handle)) {
2577 status = PTR_ERR(handle);
2578 handle = NULL;
2579 mlog_errno(status);
2580 goto orphan_unlock;
2581 }
2582
2583 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
2584 di_bh, OCFS2_JOURNAL_ACCESS_WRITE);
2585 if (status < 0) {
2586 mlog_errno(status);
2587 goto out_commit;
2588 }
2589
2590 status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode,
2591 orphan_dir_bh);
2592 if (status < 0) {
2593 mlog_errno(status);
2594 goto out_commit;
2595 }
2596
2597 di = (struct ocfs2_dinode *)di_bh->b_data;
Joseph Qi13eb9882013-07-03 15:00:48 -07002598 di->i_flags &= ~cpu_to_le32(OCFS2_ORPHANED_FL);
Tao Mabc13d342009-08-18 11:44:14 +08002599 di->i_orphaned_slot = 0;
Miklos Szeredibfe86842011-10-28 14:13:29 +02002600 set_nlink(inode, 1);
Tao Ma10cf1a02009-12-18 10:24:55 +08002601 ocfs2_set_links_count(di, inode->i_nlink);
Darrick J. Wong6fdb7022014-04-03 14:47:08 -07002602 ocfs2_update_inode_fsync_trans(handle, inode, 1);
Tao Mabc13d342009-08-18 11:44:14 +08002603 ocfs2_journal_dirty(handle, di_bh);
2604
2605 status = ocfs2_add_entry(handle, dentry, inode,
2606 OCFS2_I(inode)->ip_blkno, parent_di_bh,
2607 &lookup);
2608 if (status < 0) {
2609 mlog_errno(status);
2610 goto out_commit;
2611 }
2612
2613 status = ocfs2_dentry_attach_lock(dentry, inode,
2614 OCFS2_I(dir)->ip_blkno);
2615 if (status) {
2616 mlog_errno(status);
2617 goto out_commit;
2618 }
2619
Tao Mabc13d342009-08-18 11:44:14 +08002620 d_instantiate(dentry, inode);
2621 status = 0;
2622out_commit:
2623 ocfs2_commit_trans(osb, handle);
2624orphan_unlock:
2625 ocfs2_inode_unlock(orphan_dir_inode, 1);
2626 mutex_unlock(&orphan_dir_inode->i_mutex);
2627 iput(orphan_dir_inode);
2628leave:
2629
2630 ocfs2_inode_unlock(dir, 1);
2631
2632 brelse(di_bh);
2633 brelse(parent_di_bh);
2634 brelse(orphan_dir_bh);
2635
2636 ocfs2_free_dir_lookup_result(&lookup);
2637
Tao Mac1e8d352011-03-07 16:43:21 +08002638 if (status)
2639 mlog_errno(status);
Tao Mabc13d342009-08-18 11:44:14 +08002640
2641 return status;
2642}
2643
Arjan van de Ven92e1d5b2007-02-12 00:55:39 -08002644const struct inode_operations ocfs2_dir_iops = {
Mark Fashehccd979b2005-12-15 14:31:24 -08002645 .create = ocfs2_create,
2646 .lookup = ocfs2_lookup,
2647 .link = ocfs2_link,
2648 .unlink = ocfs2_unlink,
2649 .rmdir = ocfs2_unlink,
2650 .symlink = ocfs2_symlink,
2651 .mkdir = ocfs2_mkdir,
2652 .mknod = ocfs2_mknod,
2653 .rename = ocfs2_rename,
2654 .setattr = ocfs2_setattr,
2655 .getattr = ocfs2_getattr,
Tiger Yangd38eb8d2006-11-27 09:59:21 +08002656 .permission = ocfs2_permission,
Tiger Yangcf1d6c72008-08-18 17:11:00 +08002657 .setxattr = generic_setxattr,
2658 .getxattr = generic_getxattr,
2659 .listxattr = ocfs2_listxattr,
2660 .removexattr = generic_removexattr,
Tristan Ye55f49462009-12-17 18:42:16 +08002661 .fiemap = ocfs2_fiemap,
Christoph Hellwig4e34e712011-07-23 17:37:31 +02002662 .get_acl = ocfs2_iop_get_acl,
Christoph Hellwig702e5bc2013-12-20 05:16:48 -08002663 .set_acl = ocfs2_iop_set_acl,
Mark Fashehccd979b2005-12-15 14:31:24 -08002664};