blob: e9ea7f23da125dca99520d5680671c0c89e4ef0f [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,
Joseph Qi06ee5c72015-02-16 15:59:54 -080082 struct ocfs2_dir_lookup_result *lookup,
83 bool dio);
Mark Fashehccd979b2005-12-15 14:31:24 -080084
85static int ocfs2_orphan_add(struct ocfs2_super *osb,
Mark Fasheh1fabe142006-10-09 18:11:45 -070086 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -080087 struct inode *inode,
Tristan Ye3939fda2010-03-19 09:21:09 +080088 struct buffer_head *fe_bh,
Mark Fashehccd979b2005-12-15 14:31:24 -080089 char *name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -080090 struct ocfs2_dir_lookup_result *lookup,
Joseph Qi06ee5c72015-02-16 15:59:54 -080091 struct inode *orphan_dir_inode,
92 bool dio);
Mark Fashehccd979b2005-12-15 14:31:24 -080093
94static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
Mark Fasheh1fabe142006-10-09 18:11:45 -070095 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -080096 struct inode *inode,
97 const char *symname);
98
Xue jiufei53dc20b2015-01-08 14:32:23 -080099static int ocfs2_double_lock(struct ocfs2_super *osb,
100 struct buffer_head **bh1,
101 struct inode *inode1,
102 struct buffer_head **bh2,
103 struct inode *inode2,
104 int rename);
105
106static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2);
Mark Fashehccd979b2005-12-15 14:31:24 -0800107/* An orphan dir name is an 8 byte value, printed as a hex string */
108#define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64)))
Joseph Qi06ee5c72015-02-16 15:59:54 -0800109#define OCFS2_DIO_ORPHAN_PREFIX "dio-"
110#define OCFS2_DIO_ORPHAN_PREFIX_LEN 4
Mark Fashehccd979b2005-12-15 14:31:24 -0800111
112static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry,
Al Viro00cd8dd2012-06-10 17:13:09 -0400113 unsigned int flags)
Mark Fashehccd979b2005-12-15 14:31:24 -0800114{
115 int status;
116 u64 blkno;
Mark Fashehccd979b2005-12-15 14:31:24 -0800117 struct inode *inode = NULL;
118 struct dentry *ret;
Mark Fashehccd979b2005-12-15 14:31:24 -0800119 struct ocfs2_inode_info *oi;
120
Tao Ma8990e442011-02-23 22:45:26 +0800121 trace_ocfs2_lookup(dir, dentry, dentry->d_name.len,
122 dentry->d_name.name,
123 (unsigned long long)OCFS2_I(dir)->ip_blkno, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800124
125 if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) {
126 ret = ERR_PTR(-ENAMETOOLONG);
127 goto bail;
128 }
129
Jan Karacb257972009-06-04 15:26:50 +0200130 status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT);
Mark Fashehccd979b2005-12-15 14:31:24 -0800131 if (status < 0) {
132 if (status != -ENOENT)
133 mlog_errno(status);
134 ret = ERR_PTR(status);
135 goto bail;
136 }
137
Mark Fashehbe94d112007-09-11 15:22:06 -0700138 status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name,
139 dentry->d_name.len, &blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800140 if (status < 0)
141 goto bail_add;
142
Jan Kara5fa06132008-01-11 00:11:45 +0100143 inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800144 if (IS_ERR(inode)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800145 ret = ERR_PTR(-EACCES);
146 goto bail_unlock;
147 }
148
149 oi = OCFS2_I(inode);
150 /* Clear any orphaned state... If we were able to look up the
151 * inode from a directory, it certainly can't be orphaned. We
152 * might have the bad state from a node which intended to
153 * orphan this inode but crashed before it could commit the
154 * unlink. */
155 spin_lock(&oi->ip_lock);
156 oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED;
Mark Fashehccd979b2005-12-15 14:31:24 -0800157 spin_unlock(&oi->ip_lock);
158
159bail_add:
Mark Fashehccd979b2005-12-15 14:31:24 -0800160 ret = d_splice_alias(inode, dentry);
161
Mark Fasheh379dfe92006-09-08 14:21:03 -0700162 if (inode) {
163 /*
164 * If d_splice_alias() finds a DCACHE_DISCONNECTED
165 * dentry, it will d_move() it on top of ourse. The
166 * return value will indicate this however, so in
167 * those cases, we switch them around for the locking
168 * code.
169 *
170 * NOTE: This dentry already has ->d_op set from
171 * ocfs2_get_parent() and ocfs2_get_dentry()
172 */
Richard Weinbergerd3556ba2014-10-29 14:50:53 -0700173 if (!IS_ERR_OR_NULL(ret))
Mark Fasheh379dfe92006-09-08 14:21:03 -0700174 dentry = ret;
175
176 status = ocfs2_dentry_attach_lock(dentry, inode,
Mark Fasheh0027dd52006-09-21 16:51:28 -0700177 OCFS2_I(dir)->ip_blkno);
Mark Fasheh379dfe92006-09-08 14:21:03 -0700178 if (status) {
179 mlog_errno(status);
180 ret = ERR_PTR(status);
181 goto bail_unlock;
182 }
Goldwyn Rodrigues5e98d492010-06-28 10:04:32 -0500183 } else
184 ocfs2_dentry_attach_gen(dentry);
Mark Fasheh379dfe92006-09-08 14:21:03 -0700185
Mark Fashehccd979b2005-12-15 14:31:24 -0800186bail_unlock:
187 /* Don't drop the cluster lock until *after* the d_add --
188 * unlink on another node will message us to remove that
189 * dentry under this lock so otherwise we can race this with
Mark Fasheh34d024f2007-09-24 15:56:19 -0700190 * the downconvert thread and have a stale dentry. */
Mark Fashehe63aecb62007-10-18 15:30:42 -0700191 ocfs2_inode_unlock(dir, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800192
193bail:
Mark Fashehccd979b2005-12-15 14:31:24 -0800194
Tao Ma8990e442011-02-23 22:45:26 +0800195 trace_ocfs2_lookup_ret(ret);
Mark Fashehccd979b2005-12-15 14:31:24 -0800196
197 return ret;
198}
199
Al Viro67697cb2011-07-26 02:55:32 -0400200static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode)
Tiger Yangf5d36202008-11-14 11:15:44 +0800201{
202 struct inode *inode;
Jan Kara9c89fe02015-07-14 13:36:02 +0200203 int status;
Tiger Yangf5d36202008-11-14 11:15:44 +0800204
205 inode = new_inode(dir->i_sb);
206 if (!inode) {
207 mlog(ML_ERROR, "new_inode failed!\n");
Jan Kara9c89fe02015-07-14 13:36:02 +0200208 return ERR_PTR(-ENOMEM);
Tiger Yangf5d36202008-11-14 11:15:44 +0800209 }
210
211 /* populate as many fields early on as possible - many of
212 * these are used by the support functions here and in
213 * callers. */
214 if (S_ISDIR(mode))
Miklos Szeredibfe86842011-10-28 14:13:29 +0200215 set_nlink(inode, 2);
Dmitry Monakhov75fe0a22010-03-04 17:32:16 +0300216 inode_init_owner(inode, dir, mode);
Jan Kara9c89fe02015-07-14 13:36:02 +0200217 status = dquot_initialize(inode);
218 if (status)
219 return ERR_PTR(status);
220
Tiger Yangf5d36202008-11-14 11:15:44 +0800221 return inode;
222}
223
jiangyiwen595297a2014-06-23 13:22:09 -0700224static void ocfs2_cleanup_add_entry_failure(struct ocfs2_super *osb,
225 struct dentry *dentry, struct inode *inode)
226{
227 struct ocfs2_dentry_lock *dl = dentry->d_fsdata;
228
229 ocfs2_simple_drop_lockres(osb, &dl->dl_lockres);
230 ocfs2_lock_res_free(&dl->dl_lockres);
231 BUG_ON(dl->dl_count != 1);
232 spin_lock(&dentry_attach_lock);
233 dentry->d_fsdata = NULL;
234 spin_unlock(&dentry_attach_lock);
235 kfree(dl);
236 iput(inode);
237}
238
Mark Fashehccd979b2005-12-15 14:31:24 -0800239static int ocfs2_mknod(struct inode *dir,
240 struct dentry *dentry,
Al Viro1a67aaf2011-07-26 01:52:52 -0400241 umode_t mode,
Mark Fashehccd979b2005-12-15 14:31:24 -0800242 dev_t dev)
243{
244 int status = 0;
245 struct buffer_head *parent_fe_bh = NULL;
Mark Fasheh1fabe142006-10-09 18:11:45 -0700246 handle_t *handle = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800247 struct ocfs2_super *osb;
248 struct ocfs2_dinode *dirfe;
249 struct buffer_head *new_fe_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800250 struct inode *inode = NULL;
251 struct ocfs2_alloc_context *inode_ac = NULL;
252 struct ocfs2_alloc_context *data_ac = NULL;
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800253 struct ocfs2_alloc_context *meta_ac = NULL;
Tiger Yang534eadd2008-11-14 11:16:41 +0800254 int want_clusters = 0;
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800255 int want_meta = 0;
Tiger Yang534eadd2008-11-14 11:16:41 +0800256 int xattr_credits = 0;
257 struct ocfs2_security_xattr_info si = {
258 .enable = 1,
259 };
Jan Karaa90714c2008-10-09 19:38:40 +0200260 int did_quota_inode = 0;
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800261 struct ocfs2_dir_lookup_result lookup = { NULL, };
Joel Becker547ba7c2010-05-10 11:56:52 -0700262 sigset_t oldset;
263 int did_block_signals = 0;
Christoph Hellwig702e5bc2013-12-20 05:16:48 -0800264 struct posix_acl *default_acl = NULL, *acl = NULL;
jiangyiwen595297a2014-06-23 13:22:09 -0700265 struct ocfs2_dentry_lock *dl = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800266
Tao Ma8990e442011-02-23 22:45:26 +0800267 trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name,
268 (unsigned long long)OCFS2_I(dir)->ip_blkno,
269 (unsigned long)dev, mode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800270
Jan Kara9c89fe02015-07-14 13:36:02 +0200271 status = dquot_initialize(dir);
272 if (status) {
273 mlog_errno(status);
274 return status;
275 }
Christoph Hellwig907f4552010-03-03 09:05:06 -0500276
Mark Fashehccd979b2005-12-15 14:31:24 -0800277 /* get our super block */
278 osb = OCFS2_SB(dir->i_sb);
279
Mark Fashehe63aecb62007-10-18 15:30:42 -0700280 status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
Mark Fashehe3a82132006-10-05 16:04:17 -0700281 if (status < 0) {
282 if (status != -ENOENT)
283 mlog_errno(status);
284 return status;
285 }
286
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800287 if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) {
Mark Fasheha663e302006-08-09 11:45:07 -0700288 status = -EMLINK;
289 goto leave;
290 }
291
Mark Fashehccd979b2005-12-15 14:31:24 -0800292 dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800293 if (!ocfs2_read_links_count(dirfe)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800294 /* can't make a file in a deleted directory. */
295 status = -ENOENT;
296 goto leave;
297 }
298
299 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
300 dentry->d_name.len);
301 if (status)
302 goto leave;
303
304 /* get a spot inside the dir. */
305 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
306 dentry->d_name.name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800307 dentry->d_name.len, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800308 if (status < 0) {
309 mlog_errno(status);
310 goto leave;
311 }
312
313 /* reserve an inode spot */
Mark Fashehda5cbf22006-10-06 18:34:35 -0700314 status = ocfs2_reserve_new_inode(osb, &inode_ac);
Mark Fashehccd979b2005-12-15 14:31:24 -0800315 if (status < 0) {
316 if (status != -ENOSPC)
317 mlog_errno(status);
318 goto leave;
319 }
320
Tiger Yangf5d36202008-11-14 11:15:44 +0800321 inode = ocfs2_get_init_inode(dir, mode);
Jan Kara9c89fe02015-07-14 13:36:02 +0200322 if (IS_ERR(inode)) {
323 status = PTR_ERR(inode);
324 inode = NULL;
Tiger Yangf5d36202008-11-14 11:15:44 +0800325 mlog_errno(status);
326 goto leave;
327 }
328
Tiger Yang534eadd2008-11-14 11:16:41 +0800329 /* get security xattr */
Eric Paris2a7dba32011-02-01 11:05:39 -0500330 status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si);
Tiger Yang534eadd2008-11-14 11:16:41 +0800331 if (status) {
332 if (status == -EOPNOTSUPP)
333 si.enable = 0;
334 else {
335 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -0800336 goto leave;
337 }
338 }
339
Tiger Yang89c38bd2008-11-14 11:17:41 +0800340 /* calculate meta data/clusters for setting security and acl xattr */
341 status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800342 &si, &want_clusters,
343 &xattr_credits, &want_meta);
Tiger Yang89c38bd2008-11-14 11:17:41 +0800344 if (status < 0) {
345 mlog_errno(status);
346 goto leave;
Tiger Yang534eadd2008-11-14 11:16:41 +0800347 }
348
349 /* Reserve a cluster if creating an extent based directory. */
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800350 if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) {
Tiger Yang534eadd2008-11-14 11:16:41 +0800351 want_clusters += 1;
352
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800353 /* Dir indexing requires extra space as well */
Mark Fasheh4ed8a6b2008-11-24 17:02:08 -0800354 if (ocfs2_supports_indexed_dirs(osb))
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800355 want_meta++;
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800356 }
357
358 status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac);
359 if (status < 0) {
360 if (status != -ENOSPC)
361 mlog_errno(status);
362 goto leave;
363 }
364
Tiger Yang534eadd2008-11-14 11:16:41 +0800365 status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
366 if (status < 0) {
367 if (status != -ENOSPC)
368 mlog_errno(status);
369 goto leave;
370 }
371
Christoph Hellwig702e5bc2013-12-20 05:16:48 -0800372 status = posix_acl_create(dir, &mode, &default_acl, &acl);
373 if (status) {
374 mlog_errno(status);
375 goto leave;
376 }
377
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800378 handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb,
379 S_ISDIR(mode),
380 xattr_credits));
Mark Fashehccd979b2005-12-15 14:31:24 -0800381 if (IS_ERR(handle)) {
382 status = PTR_ERR(handle);
383 handle = NULL;
384 mlog_errno(status);
385 goto leave;
386 }
387
Joel Becker547ba7c2010-05-10 11:56:52 -0700388 /* Starting to change things, restart is no longer possible. */
389 ocfs2_block_signals(&oldset);
390 did_block_signals = 1;
391
Christoph Hellwig63936dd2010-03-03 09:05:01 -0500392 status = dquot_alloc_inode(inode);
393 if (status)
Jan Karaa90714c2008-10-09 19:38:40 +0200394 goto leave;
Jan Karaa90714c2008-10-09 19:38:40 +0200395 did_quota_inode = 1;
396
Mark Fashehccd979b2005-12-15 14:31:24 -0800397 /* do the real work now. */
Tao Ma19bd3412009-08-18 11:44:10 +0800398 status = ocfs2_mknod_locked(osb, dir, inode, dev,
Mark Fashehccd979b2005-12-15 14:31:24 -0800399 &new_fe_bh, parent_fe_bh, handle,
Tiger Yangf5d36202008-11-14 11:15:44 +0800400 inode_ac);
Mark Fashehccd979b2005-12-15 14:31:24 -0800401 if (status < 0) {
402 mlog_errno(status);
403 goto leave;
404 }
405
406 if (S_ISDIR(mode)) {
407 status = ocfs2_fill_new_dir(osb, handle, dir, inode,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800408 new_fe_bh, data_ac, meta_ac);
Mark Fashehccd979b2005-12-15 14:31:24 -0800409 if (status < 0) {
410 mlog_errno(status);
411 goto leave;
412 }
413
Joel Becker0cf2f762009-02-12 16:41:25 -0800414 status = ocfs2_journal_access_di(handle, INODE_CACHE(dir),
415 parent_fe_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700416 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800417 if (status < 0) {
418 mlog_errno(status);
419 goto leave;
420 }
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800421 ocfs2_add_links_count(dirfe, 1);
Joel Beckerec20cec2010-03-19 14:13:52 -0700422 ocfs2_journal_dirty(handle, parent_fe_bh);
Dave Hansend8c76e62006-09-30 23:29:04 -0700423 inc_nlink(dir);
Mark Fashehccd979b2005-12-15 14:31:24 -0800424 }
425
Christoph Hellwig702e5bc2013-12-20 05:16:48 -0800426 if (default_acl) {
427 status = ocfs2_set_acl(handle, inode, new_fe_bh,
428 ACL_TYPE_DEFAULT, default_acl,
429 meta_ac, data_ac);
430 }
431 if (!status && acl) {
432 status = ocfs2_set_acl(handle, inode, new_fe_bh,
433 ACL_TYPE_ACCESS, acl,
434 meta_ac, data_ac);
435 }
436
Tiger Yang89c38bd2008-11-14 11:17:41 +0800437 if (status < 0) {
438 mlog_errno(status);
439 goto leave;
440 }
441
Tiger Yang534eadd2008-11-14 11:16:41 +0800442 if (si.enable) {
443 status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800444 meta_ac, data_ac);
Tiger Yang534eadd2008-11-14 11:16:41 +0800445 if (status < 0) {
446 mlog_errno(status);
447 goto leave;
448 }
449 }
450
Mark Fasheha9743fc2010-04-23 11:42:22 -0700451 /*
452 * Do this before adding the entry to the directory. We add
453 * also set d_op after success so that ->d_iput() will cleanup
454 * the dentry lock even if ocfs2_add_entry() fails below.
455 */
456 status = ocfs2_dentry_attach_lock(dentry, inode,
457 OCFS2_I(dir)->ip_blkno);
458 if (status) {
459 mlog_errno(status);
460 goto leave;
461 }
Mark Fasheha9743fc2010-04-23 11:42:22 -0700462
jiangyiwen595297a2014-06-23 13:22:09 -0700463 dl = dentry->d_fsdata;
464
Mark Fashehccd979b2005-12-15 14:31:24 -0800465 status = ocfs2_add_entry(handle, dentry, inode,
466 OCFS2_I(inode)->ip_blkno, parent_fe_bh,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800467 &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800468 if (status < 0) {
469 mlog_errno(status);
470 goto leave;
471 }
472
473 insert_inode_hash(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800474 d_instantiate(dentry, inode);
475 status = 0;
476leave:
Christoph Hellwig702e5bc2013-12-20 05:16:48 -0800477 if (default_acl)
478 posix_acl_release(default_acl);
479 if (acl)
480 posix_acl_release(acl);
Jan Karaa90714c2008-10-09 19:38:40 +0200481 if (status < 0 && did_quota_inode)
Christoph Hellwig63936dd2010-03-03 09:05:01 -0500482 dquot_free_inode(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800483 if (handle)
Mark Fasheh02dc1af2006-10-09 16:48:10 -0700484 ocfs2_commit_trans(osb, handle);
Mark Fashehccd979b2005-12-15 14:31:24 -0800485
Mark Fashehe63aecb62007-10-18 15:30:42 -0700486 ocfs2_inode_unlock(dir, 1);
Joel Becker547ba7c2010-05-10 11:56:52 -0700487 if (did_block_signals)
488 ocfs2_unblock_signals(&oldset);
Mark Fashehe3a82132006-10-05 16:04:17 -0700489
Mark Fasheha81cb882008-10-07 14:25:16 -0700490 brelse(new_fe_bh);
Mark Fasheha81cb882008-10-07 14:25:16 -0700491 brelse(parent_fe_bh);
Tiger Yang534eadd2008-11-14 11:16:41 +0800492 kfree(si.value);
Mark Fashehccd979b2005-12-15 14:31:24 -0800493
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800494 ocfs2_free_dir_lookup_result(&lookup);
495
Mark Fashehccd979b2005-12-15 14:31:24 -0800496 if (inode_ac)
497 ocfs2_free_alloc_context(inode_ac);
498
499 if (data_ac)
500 ocfs2_free_alloc_context(data_ac);
501
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800502 if (meta_ac)
503 ocfs2_free_alloc_context(meta_ac);
Tiger Yang534eadd2008-11-14 11:16:41 +0800504
Li Dongyang062d3402010-04-22 16:11:29 +0800505 /*
506 * We should call iput after the i_mutex of the bitmap been
507 * unlocked in ocfs2_free_alloc_context, or the
508 * ocfs2_delete_inode will mutex_lock again.
509 */
510 if ((status < 0) && inode) {
jiangyiwen595297a2014-06-23 13:22:09 -0700511 if (dl)
512 ocfs2_cleanup_add_entry_failure(osb, dentry, inode);
513
Li Dongyang062d3402010-04-22 16:11:29 +0800514 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR;
515 clear_nlink(inode);
516 iput(inode);
517 }
518
Tao Mac1e8d352011-03-07 16:43:21 +0800519 if (status)
520 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -0800521
522 return status;
523}
524
Mark Fasheh021960c2010-08-13 15:15:15 -0700525static int __ocfs2_mknod_locked(struct inode *dir,
526 struct inode *inode,
527 dev_t dev,
528 struct buffer_head **new_fe_bh,
529 struct buffer_head *parent_fe_bh,
530 handle_t *handle,
531 struct ocfs2_alloc_context *inode_ac,
532 u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit)
Mark Fashehccd979b2005-12-15 14:31:24 -0800533{
534 int status = 0;
Mark Fasheh021960c2010-08-13 15:15:15 -0700535 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
Mark Fashehccd979b2005-12-15 14:31:24 -0800536 struct ocfs2_dinode *fe = NULL;
537 struct ocfs2_extent_list *fel;
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800538 u16 feat;
Darrick J. Wong2931cdc2014-04-03 14:46:48 -0700539 struct ocfs2_inode_info *oi = OCFS2_I(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800540
Mark Fashehccd979b2005-12-15 14:31:24 -0800541 *new_fe_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800542
Mark Fashehccd979b2005-12-15 14:31:24 -0800543 /* populate as many fields early on as possible - many of
544 * these are used by the support functions here and in
545 * callers. */
546 inode->i_ino = ino_from_blkno(osb->sb, fe_blkno);
547 OCFS2_I(inode)->ip_blkno = fe_blkno;
Mark Fashehccd979b2005-12-15 14:31:24 -0800548 spin_lock(&osb->osb_lock);
549 inode->i_generation = osb->s_next_generation++;
550 spin_unlock(&osb->osb_lock);
551
552 *new_fe_bh = sb_getblk(osb->sb, fe_blkno);
553 if (!*new_fe_bh) {
Rui Xiang7391a292013-11-12 15:06:54 -0800554 status = -ENOMEM;
Mark Fashehccd979b2005-12-15 14:31:24 -0800555 mlog_errno(status);
556 goto leave;
557 }
Joel Becker8cb471e2009-02-10 20:00:41 -0800558 ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800559
Joel Becker0cf2f762009-02-12 16:41:25 -0800560 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
561 *new_fe_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700562 OCFS2_JOURNAL_ACCESS_CREATE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800563 if (status < 0) {
564 mlog_errno(status);
565 goto leave;
566 }
567
568 fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data;
569 memset(fe, 0, osb->sb->s_blocksize);
570
571 fe->i_generation = cpu_to_le32(inode->i_generation);
572 fe->i_fs_generation = cpu_to_le32(osb->fs_generation);
573 fe->i_blkno = cpu_to_le64(fe_blkno);
Joel Becker2b6cb572010-03-26 10:09:15 +0800574 fe->i_suballoc_loc = cpu_to_le64(suballoc_loc);
Mark Fashehccd979b2005-12-15 14:31:24 -0800575 fe->i_suballoc_bit = cpu_to_le16(suballoc_bit);
Tao Ma4d0ddb22008-03-05 16:11:46 +0800576 fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot);
Eric W. Biederman2c034172013-01-31 17:27:11 -0800577 fe->i_uid = cpu_to_le32(i_uid_read(inode));
578 fe->i_gid = cpu_to_le32(i_gid_read(inode));
Tiger Yangf5d36202008-11-14 11:15:44 +0800579 fe->i_mode = cpu_to_le16(inode->i_mode);
580 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
Mark Fashehccd979b2005-12-15 14:31:24 -0800581 fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev));
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800582
583 ocfs2_set_links_count(fe, inode->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -0800584
585 fe->i_last_eb_blk = 0;
586 strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE);
Joseph Qi13eb9882013-07-03 15:00:48 -0700587 fe->i_flags |= cpu_to_le32(OCFS2_VALID_FL);
Mark Fashehccd979b2005-12-15 14:31:24 -0800588 fe->i_atime = fe->i_ctime = fe->i_mtime =
589 cpu_to_le64(CURRENT_TIME.tv_sec);
590 fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec =
591 cpu_to_le32(CURRENT_TIME.tv_nsec);
592 fe->i_dtime = 0;
593
Mark Fasheh5b6a3a22007-09-13 16:33:54 -0700594 /*
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800595 * If supported, directories start with inline data. If inline
596 * isn't supported, but indexing is, we start them as indexed.
Mark Fasheh5b6a3a22007-09-13 16:33:54 -0700597 */
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800598 feat = le16_to_cpu(fe->i_dyn_features);
Tiger Yangf5d36202008-11-14 11:15:44 +0800599 if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) {
Mark Fasheh5b6a3a22007-09-13 16:33:54 -0700600 fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL);
601
Tiger Yangd9ae49d2009-03-05 11:06:15 +0800602 fe->id2.i_data.id_count = cpu_to_le16(
603 ocfs2_max_inline_data_with_xattr(osb->sb, fe));
Mark Fasheh5b6a3a22007-09-13 16:33:54 -0700604 } else {
605 fel = &fe->id2.i_list;
606 fel->l_tree_depth = 0;
607 fel->l_next_free_rec = 0;
608 fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb));
609 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800610
Joel Beckerec20cec2010-03-19 14:13:52 -0700611 ocfs2_journal_dirty(handle, *new_fe_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800612
Joel Beckerb657c952008-11-13 14:49:11 -0800613 ocfs2_populate_inode(inode, fe, 1);
Joel Becker0cf2f762009-02-12 16:41:25 -0800614 ocfs2_ci_set_new(osb, INODE_CACHE(inode));
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800615 if (!ocfs2_mount_local(osb)) {
616 status = ocfs2_create_new_inode_locks(inode);
617 if (status < 0)
618 mlog_errno(status);
619 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800620
Darrick J. Wong2931cdc2014-04-03 14:46:48 -0700621 oi->i_sync_tid = handle->h_transaction->t_tid;
622 oi->i_datasync_tid = handle->h_transaction->t_tid;
623
Mark Fashehccd979b2005-12-15 14:31:24 -0800624leave:
625 if (status < 0) {
626 if (*new_fe_bh) {
627 brelse(*new_fe_bh);
628 *new_fe_bh = NULL;
629 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800630 }
631
Tao Mac1e8d352011-03-07 16:43:21 +0800632 if (status)
633 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -0800634 return status;
635}
636
Mark Fasheh021960c2010-08-13 15:15:15 -0700637static int ocfs2_mknod_locked(struct ocfs2_super *osb,
638 struct inode *dir,
639 struct inode *inode,
640 dev_t dev,
641 struct buffer_head **new_fe_bh,
642 struct buffer_head *parent_fe_bh,
643 handle_t *handle,
644 struct ocfs2_alloc_context *inode_ac)
645{
646 int status = 0;
647 u64 suballoc_loc, fe_blkno = 0;
648 u16 suballoc_bit;
649
650 *new_fe_bh = NULL;
651
652 status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh,
653 inode_ac, &suballoc_loc,
654 &suballoc_bit, &fe_blkno);
655 if (status < 0) {
656 mlog_errno(status);
657 return status;
658 }
659
660 return __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh,
661 parent_fe_bh, handle, inode_ac,
662 fe_blkno, suballoc_loc, suballoc_bit);
663}
664
Mark Fashehccd979b2005-12-15 14:31:24 -0800665static int ocfs2_mkdir(struct inode *dir,
666 struct dentry *dentry,
Al Viro18bb1db2011-07-26 01:41:39 -0400667 umode_t mode)
Mark Fashehccd979b2005-12-15 14:31:24 -0800668{
669 int ret;
670
Tao Ma8990e442011-02-23 22:45:26 +0800671 trace_ocfs2_mkdir(dir, dentry, dentry->d_name.len, dentry->d_name.name,
672 OCFS2_I(dir)->ip_blkno, mode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800673 ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0);
Tao Mac1e8d352011-03-07 16:43:21 +0800674 if (ret)
675 mlog_errno(ret);
Mark Fashehccd979b2005-12-15 14:31:24 -0800676
677 return ret;
678}
679
680static int ocfs2_create(struct inode *dir,
681 struct dentry *dentry,
Al Viro4acdaf22011-07-26 01:42:34 -0400682 umode_t mode,
Al Viroebfc3b42012-06-10 18:05:36 -0400683 bool excl)
Mark Fashehccd979b2005-12-15 14:31:24 -0800684{
685 int ret;
686
Tao Ma8990e442011-02-23 22:45:26 +0800687 trace_ocfs2_create(dir, dentry, dentry->d_name.len, dentry->d_name.name,
688 (unsigned long long)OCFS2_I(dir)->ip_blkno, mode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800689 ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0);
Tao Mac1e8d352011-03-07 16:43:21 +0800690 if (ret)
691 mlog_errno(ret);
Mark Fashehccd979b2005-12-15 14:31:24 -0800692
693 return ret;
694}
695
696static int ocfs2_link(struct dentry *old_dentry,
697 struct inode *dir,
698 struct dentry *dentry)
699{
Mark Fasheh1fabe142006-10-09 18:11:45 -0700700 handle_t *handle;
David Howells2b0143b2015-03-17 22:25:59 +0000701 struct inode *inode = d_inode(old_dentry);
702 struct inode *old_dir = d_inode(old_dentry->d_parent);
Mark Fashehccd979b2005-12-15 14:31:24 -0800703 int err;
704 struct buffer_head *fe_bh = NULL;
Xue jiufei53dc20b2015-01-08 14:32:23 -0800705 struct buffer_head *old_dir_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800706 struct buffer_head *parent_fe_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800707 struct ocfs2_dinode *fe = NULL;
708 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800709 struct ocfs2_dir_lookup_result lookup = { NULL, };
Joel Becker547ba7c2010-05-10 11:56:52 -0700710 sigset_t oldset;
Xue jiufei0e048312014-02-10 14:25:54 -0800711 u64 old_de_ino;
Mark Fashehccd979b2005-12-15 14:31:24 -0800712
Tao Ma8990e442011-02-23 22:45:26 +0800713 trace_ocfs2_link((unsigned long long)OCFS2_I(inode)->ip_blkno,
714 old_dentry->d_name.len, old_dentry->d_name.name,
715 dentry->d_name.len, dentry->d_name.name);
Mark Fashehccd979b2005-12-15 14:31:24 -0800716
Mark Fasheh123a9642006-10-05 16:48:23 -0700717 if (S_ISDIR(inode->i_mode))
718 return -EPERM;
Mark Fashehccd979b2005-12-15 14:31:24 -0800719
Jan Kara9c89fe02015-07-14 13:36:02 +0200720 err = dquot_initialize(dir);
721 if (err) {
722 mlog_errno(err);
723 return err;
724 }
Christoph Hellwig907f4552010-03-03 09:05:06 -0500725
Xue jiufei53dc20b2015-01-08 14:32:23 -0800726 err = ocfs2_double_lock(osb, &old_dir_bh, old_dir,
727 &parent_fe_bh, dir, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800728 if (err < 0) {
729 if (err != -ENOENT)
730 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700731 return err;
Mark Fashehccd979b2005-12-15 14:31:24 -0800732 }
733
Xue jiufei53dc20b2015-01-08 14:32:23 -0800734 /* make sure both dirs have bhs
735 * get an extra ref on old_dir_bh if old==new */
736 if (!parent_fe_bh) {
737 if (old_dir_bh) {
738 parent_fe_bh = old_dir_bh;
739 get_bh(parent_fe_bh);
740 } else {
741 mlog(ML_ERROR, "%s: no old_dir_bh!\n", osb->uuid_str);
742 err = -EIO;
743 goto out;
744 }
745 }
746
Tiger Yang0f62de22006-08-31 20:39:47 -0700747 if (!dir->i_nlink) {
748 err = -ENOENT;
Mark Fasheh123a9642006-10-05 16:48:23 -0700749 goto out;
Tiger Yang0f62de22006-08-31 20:39:47 -0700750 }
751
Xue jiufei53dc20b2015-01-08 14:32:23 -0800752 err = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name,
Xue jiufei0e048312014-02-10 14:25:54 -0800753 old_dentry->d_name.len, &old_de_ino);
754 if (err) {
755 err = -ENOENT;
756 goto out;
757 }
758
759 /*
760 * Check whether another node removed the source inode while we
761 * were in the vfs.
762 */
763 if (old_de_ino != OCFS2_I(inode)->ip_blkno) {
764 err = -ENOENT;
765 goto out;
766 }
767
Mark Fashehccd979b2005-12-15 14:31:24 -0800768 err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
769 dentry->d_name.len);
770 if (err)
Mark Fasheh123a9642006-10-05 16:48:23 -0700771 goto out;
Mark Fashehccd979b2005-12-15 14:31:24 -0800772
773 err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
774 dentry->d_name.name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800775 dentry->d_name.len, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800776 if (err < 0) {
777 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700778 goto out;
Mark Fashehccd979b2005-12-15 14:31:24 -0800779 }
780
Mark Fashehe63aecb62007-10-18 15:30:42 -0700781 err = ocfs2_inode_lock(inode, &fe_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -0800782 if (err < 0) {
783 if (err != -ENOENT)
784 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700785 goto out;
Mark Fashehccd979b2005-12-15 14:31:24 -0800786 }
787
788 fe = (struct ocfs2_dinode *) fe_bh->b_data;
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800789 if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800790 err = -EMLINK;
Mark Fasheh123a9642006-10-05 16:48:23 -0700791 goto out_unlock_inode;
Mark Fashehccd979b2005-12-15 14:31:24 -0800792 }
793
Jan Karaa90714c2008-10-09 19:38:40 +0200794 handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb));
Mark Fashehccd979b2005-12-15 14:31:24 -0800795 if (IS_ERR(handle)) {
796 err = PTR_ERR(handle);
797 handle = NULL;
798 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700799 goto out_unlock_inode;
Mark Fashehccd979b2005-12-15 14:31:24 -0800800 }
801
Joel Becker547ba7c2010-05-10 11:56:52 -0700802 /* Starting to change things, restart is no longer possible. */
803 ocfs2_block_signals(&oldset);
804
Joel Becker0cf2f762009-02-12 16:41:25 -0800805 err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700806 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800807 if (err < 0) {
808 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700809 goto out_commit;
Mark Fashehccd979b2005-12-15 14:31:24 -0800810 }
811
Dave Hansend8c76e62006-09-30 23:29:04 -0700812 inc_nlink(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800813 inode->i_ctime = CURRENT_TIME;
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800814 ocfs2_set_links_count(fe, inode->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -0800815 fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
816 fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
Joel Beckerec20cec2010-03-19 14:13:52 -0700817 ocfs2_journal_dirty(handle, fe_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800818
819 err = ocfs2_add_entry(handle, dentry, inode,
820 OCFS2_I(inode)->ip_blkno,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800821 parent_fe_bh, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800822 if (err) {
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800823 ocfs2_add_links_count(fe, -1);
Dave Hansen9a53c3a2006-09-30 23:29:03 -0700824 drop_nlink(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800825 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700826 goto out_commit;
Mark Fashehccd979b2005-12-15 14:31:24 -0800827 }
828
Mark Fasheh0027dd52006-09-21 16:51:28 -0700829 err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
Mark Fasheh379dfe92006-09-08 14:21:03 -0700830 if (err) {
831 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700832 goto out_commit;
Mark Fasheh379dfe92006-09-08 14:21:03 -0700833 }
834
Al Viro7de9c6ee2010-10-23 11:11:40 -0400835 ihold(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800836 d_instantiate(dentry, inode);
Mark Fasheh123a9642006-10-05 16:48:23 -0700837
838out_commit:
Mark Fasheh02dc1af2006-10-09 16:48:10 -0700839 ocfs2_commit_trans(osb, handle);
Joel Becker547ba7c2010-05-10 11:56:52 -0700840 ocfs2_unblock_signals(&oldset);
Mark Fasheh123a9642006-10-05 16:48:23 -0700841out_unlock_inode:
Mark Fashehe63aecb62007-10-18 15:30:42 -0700842 ocfs2_inode_unlock(inode, 1);
Mark Fasheh123a9642006-10-05 16:48:23 -0700843
844out:
Xue jiufei53dc20b2015-01-08 14:32:23 -0800845 ocfs2_double_unlock(old_dir, dir);
Mark Fasheh123a9642006-10-05 16:48:23 -0700846
Mark Fasheha81cb882008-10-07 14:25:16 -0700847 brelse(fe_bh);
848 brelse(parent_fe_bh);
Xue jiufei53dc20b2015-01-08 14:32:23 -0800849 brelse(old_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800850
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800851 ocfs2_free_dir_lookup_result(&lookup);
852
Tao Mac1e8d352011-03-07 16:43:21 +0800853 if (err)
854 mlog_errno(err);
Mark Fashehccd979b2005-12-15 14:31:24 -0800855
856 return err;
857}
858
Mark Fasheh379dfe92006-09-08 14:21:03 -0700859/*
860 * Takes and drops an exclusive lock on the given dentry. This will
861 * force other nodes to drop it.
862 */
863static int ocfs2_remote_dentry_delete(struct dentry *dentry)
864{
865 int ret;
866
867 ret = ocfs2_dentry_lock(dentry, 1);
868 if (ret)
869 mlog_errno(ret);
870 else
871 ocfs2_dentry_unlock(dentry, 1);
872
873 return ret;
874}
875
Younger Liub5a8bb72013-07-03 15:01:01 -0700876static inline int ocfs2_inode_is_unlinkable(struct inode *inode)
Mark Fasheh17ff7852006-09-30 23:29:05 -0700877{
878 if (S_ISDIR(inode->i_mode)) {
879 if (inode->i_nlink == 2)
880 return 1;
881 return 0;
882 }
883
884 if (inode->i_nlink == 1)
885 return 1;
886 return 0;
887}
888
Mark Fashehccd979b2005-12-15 14:31:24 -0800889static int ocfs2_unlink(struct inode *dir,
890 struct dentry *dentry)
891{
892 int status;
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700893 int child_locked = 0;
Younger Liub5a8bb72013-07-03 15:01:01 -0700894 bool is_unlinkable = false;
David Howells2b0143b2015-03-17 22:25:59 +0000895 struct inode *inode = d_inode(dentry);
Mark Fasheh5098c272006-10-05 18:12:57 -0700896 struct inode *orphan_dir = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800897 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
898 u64 blkno;
899 struct ocfs2_dinode *fe = NULL;
900 struct buffer_head *fe_bh = NULL;
901 struct buffer_head *parent_node_bh = NULL;
Mark Fasheh1fabe142006-10-09 18:11:45 -0700902 handle_t *handle = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800903 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800904 struct ocfs2_dir_lookup_result lookup = { NULL, };
905 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
Mark Fashehccd979b2005-12-15 14:31:24 -0800906
Tao Ma8990e442011-02-23 22:45:26 +0800907 trace_ocfs2_unlink(dir, dentry, dentry->d_name.len,
908 dentry->d_name.name,
909 (unsigned long long)OCFS2_I(dir)->ip_blkno,
910 (unsigned long long)OCFS2_I(inode)->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800911
Jan Kara9c89fe02015-07-14 13:36:02 +0200912 status = dquot_initialize(dir);
913 if (status) {
914 mlog_errno(status);
915 return status;
916 }
Christoph Hellwig907f4552010-03-03 09:05:06 -0500917
David Howells2b0143b2015-03-17 22:25:59 +0000918 BUG_ON(d_inode(dentry->d_parent) != dir);
Mark Fashehccd979b2005-12-15 14:31:24 -0800919
Tao Ma8990e442011-02-23 22:45:26 +0800920 if (inode == osb->root_inode)
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700921 return -EPERM;
Mark Fashehccd979b2005-12-15 14:31:24 -0800922
Jan Karacb257972009-06-04 15:26:50 +0200923 status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1,
924 OI_LS_PARENT);
Mark Fashehccd979b2005-12-15 14:31:24 -0800925 if (status < 0) {
926 if (status != -ENOENT)
927 mlog_errno(status);
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700928 return status;
Mark Fashehccd979b2005-12-15 14:31:24 -0800929 }
930
931 status = ocfs2_find_files_on_disk(dentry->d_name.name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800932 dentry->d_name.len, &blkno, dir,
933 &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800934 if (status < 0) {
935 if (status != -ENOENT)
936 mlog_errno(status);
937 goto leave;
938 }
939
940 if (OCFS2_I(inode)->ip_blkno != blkno) {
941 status = -ENOENT;
942
Tao Ma8990e442011-02-23 22:45:26 +0800943 trace_ocfs2_unlink_noent(
944 (unsigned long long)OCFS2_I(inode)->ip_blkno,
945 (unsigned long long)blkno,
946 OCFS2_I(inode)->ip_flags);
Mark Fashehccd979b2005-12-15 14:31:24 -0800947 goto leave;
948 }
949
Mark Fashehe63aecb62007-10-18 15:30:42 -0700950 status = ocfs2_inode_lock(inode, &fe_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -0800951 if (status < 0) {
952 if (status != -ENOENT)
953 mlog_errno(status);
954 goto leave;
955 }
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700956 child_locked = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -0800957
958 if (S_ISDIR(inode->i_mode)) {
Mark Fashehb80b5492009-02-18 11:41:38 -0800959 if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800960 status = -ENOTEMPTY;
961 goto leave;
962 }
963 }
964
Mark Fasheh379dfe92006-09-08 14:21:03 -0700965 status = ocfs2_remote_dentry_delete(dentry);
Mark Fashehccd979b2005-12-15 14:31:24 -0800966 if (status < 0) {
Mark Fasheh34d024f2007-09-24 15:56:19 -0700967 /* This remote delete should succeed under all normal
Mark Fashehccd979b2005-12-15 14:31:24 -0800968 * circumstances. */
969 mlog_errno(status);
970 goto leave;
971 }
972
Younger Liub5a8bb72013-07-03 15:01:01 -0700973 if (ocfs2_inode_is_unlinkable(inode)) {
Tao Ma19bd3412009-08-18 11:44:10 +0800974 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
975 OCFS2_I(inode)->ip_blkno,
Joseph Qi06ee5c72015-02-16 15:59:54 -0800976 orphan_name, &orphan_insert,
977 false);
Mark Fashehccd979b2005-12-15 14:31:24 -0800978 if (status < 0) {
979 mlog_errno(status);
980 goto leave;
981 }
Younger Liub5a8bb72013-07-03 15:01:01 -0700982 is_unlinkable = true;
Mark Fashehccd979b2005-12-15 14:31:24 -0800983 }
984
Jan Karaa90714c2008-10-09 19:38:40 +0200985 handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb));
Mark Fashehccd979b2005-12-15 14:31:24 -0800986 if (IS_ERR(handle)) {
987 status = PTR_ERR(handle);
988 handle = NULL;
989 mlog_errno(status);
990 goto leave;
991 }
992
Joel Becker0cf2f762009-02-12 16:41:25 -0800993 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700994 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800995 if (status < 0) {
996 mlog_errno(status);
997 goto leave;
998 }
999
1000 fe = (struct ocfs2_dinode *) fe_bh->b_data;
1001
Mark Fashehccd979b2005-12-15 14:31:24 -08001002 /* delete the name from the parent dir */
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001003 status = ocfs2_delete_entry(handle, dir, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08001004 if (status < 0) {
1005 mlog_errno(status);
1006 goto leave;
1007 }
1008
Mark Fasheh17ff7852006-09-30 23:29:05 -07001009 if (S_ISDIR(inode->i_mode))
1010 drop_nlink(inode);
1011 drop_nlink(inode);
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001012 ocfs2_set_links_count(fe, inode->i_nlink);
Joel Beckerec20cec2010-03-19 14:13:52 -07001013 ocfs2_journal_dirty(handle, fe_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08001014
Mark Fasheh592282c2007-01-02 17:59:40 -08001015 dir->i_ctime = dir->i_mtime = CURRENT_TIME;
1016 if (S_ISDIR(inode->i_mode))
Mark Fasheh17ff7852006-09-30 23:29:05 -07001017 drop_nlink(dir);
Mark Fasheh592282c2007-01-02 17:59:40 -08001018
1019 status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh);
1020 if (status < 0) {
1021 mlog_errno(status);
1022 if (S_ISDIR(inode->i_mode))
Dave Hansend8c76e62006-09-30 23:29:04 -07001023 inc_nlink(dir);
Younger Liub5a8bb72013-07-03 15:01:01 -07001024 goto leave;
1025 }
1026
1027 if (is_unlinkable) {
1028 status = ocfs2_orphan_add(osb, handle, inode, fe_bh,
Joseph Qi06ee5c72015-02-16 15:59:54 -08001029 orphan_name, &orphan_insert, orphan_dir, false);
Younger Liub5a8bb72013-07-03 15:01:01 -07001030 if (status < 0)
1031 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001032 }
1033
1034leave:
Mark Fashehccd979b2005-12-15 14:31:24 -08001035 if (handle)
Mark Fasheh02dc1af2006-10-09 16:48:10 -07001036 ocfs2_commit_trans(osb, handle);
Mark Fashehccd979b2005-12-15 14:31:24 -08001037
Mark Fasheh30a4f5e2006-10-06 11:49:45 -07001038 if (child_locked)
Mark Fashehe63aecb62007-10-18 15:30:42 -07001039 ocfs2_inode_unlock(inode, 1);
Mark Fasheh30a4f5e2006-10-06 11:49:45 -07001040
Mark Fashehe63aecb62007-10-18 15:30:42 -07001041 ocfs2_inode_unlock(dir, 1);
Mark Fasheh30a4f5e2006-10-06 11:49:45 -07001042
Mark Fasheh5098c272006-10-05 18:12:57 -07001043 if (orphan_dir) {
1044 /* This was locked for us in ocfs2_prepare_orphan_dir() */
Mark Fashehe63aecb62007-10-18 15:30:42 -07001045 ocfs2_inode_unlock(orphan_dir, 1);
Mark Fasheh5098c272006-10-05 18:12:57 -07001046 mutex_unlock(&orphan_dir->i_mutex);
1047 iput(orphan_dir);
1048 }
1049
Mark Fasheha81cb882008-10-07 14:25:16 -07001050 brelse(fe_bh);
Mark Fasheha81cb882008-10-07 14:25:16 -07001051 brelse(parent_node_bh);
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001052
1053 ocfs2_free_dir_lookup_result(&orphan_insert);
1054 ocfs2_free_dir_lookup_result(&lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08001055
Xiaowei.Huf5b25852014-01-27 17:06:56 -08001056 if (status && (status != -ENOTEMPTY) && (status != -ENOENT))
Tao Mac1e8d352011-03-07 16:43:21 +08001057 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001058
1059 return status;
1060}
1061
Yiwen Jiangf7a14f32014-06-23 13:22:09 -07001062static int ocfs2_check_if_ancestor(struct ocfs2_super *osb,
1063 u64 src_inode_no, u64 dest_inode_no)
1064{
1065 int ret = 0, i = 0;
1066 u64 parent_inode_no = 0;
1067 u64 child_inode_no = src_inode_no;
1068 struct inode *child_inode;
1069
1070#define MAX_LOOKUP_TIMES 32
1071 while (1) {
1072 child_inode = ocfs2_iget(osb, child_inode_no, 0, 0);
1073 if (IS_ERR(child_inode)) {
1074 ret = PTR_ERR(child_inode);
1075 break;
1076 }
1077
1078 ret = ocfs2_inode_lock(child_inode, NULL, 0);
1079 if (ret < 0) {
1080 iput(child_inode);
1081 if (ret != -ENOENT)
1082 mlog_errno(ret);
1083 break;
1084 }
1085
1086 ret = ocfs2_lookup_ino_from_name(child_inode, "..", 2,
1087 &parent_inode_no);
1088 ocfs2_inode_unlock(child_inode, 0);
1089 iput(child_inode);
1090 if (ret < 0) {
1091 ret = -ENOENT;
1092 break;
1093 }
1094
1095 if (parent_inode_no == dest_inode_no) {
1096 ret = 1;
1097 break;
1098 }
1099
1100 if (parent_inode_no == osb->root_inode->i_ino) {
1101 ret = 0;
1102 break;
1103 }
1104
1105 child_inode_no = parent_inode_no;
1106
1107 if (++i >= MAX_LOOKUP_TIMES) {
1108 mlog(ML_NOTICE, "max lookup times reached, filesystem "
1109 "may have nested directories, "
1110 "src inode: %llu, dest inode: %llu.\n",
1111 (unsigned long long)src_inode_no,
1112 (unsigned long long)dest_inode_no);
1113 ret = 0;
1114 break;
1115 }
1116 }
1117
1118 return ret;
1119}
1120
Mark Fashehccd979b2005-12-15 14:31:24 -08001121/*
Xue jiufei53dc20b2015-01-08 14:32:23 -08001122 * The only place this should be used is rename and link!
Mark Fashehccd979b2005-12-15 14:31:24 -08001123 * if they have the same id, then the 1st one is the only one locked.
1124 */
1125static int ocfs2_double_lock(struct ocfs2_super *osb,
Mark Fashehccd979b2005-12-15 14:31:24 -08001126 struct buffer_head **bh1,
1127 struct inode *inode1,
1128 struct buffer_head **bh2,
Xue jiufei53dc20b2015-01-08 14:32:23 -08001129 struct inode *inode2,
1130 int rename)
Mark Fashehccd979b2005-12-15 14:31:24 -08001131{
1132 int status;
Yiwen Jiangf7a14f32014-06-23 13:22:09 -07001133 int inode1_is_ancestor, inode2_is_ancestor;
Mark Fashehccd979b2005-12-15 14:31:24 -08001134 struct ocfs2_inode_info *oi1 = OCFS2_I(inode1);
1135 struct ocfs2_inode_info *oi2 = OCFS2_I(inode2);
Mark Fashehccd979b2005-12-15 14:31:24 -08001136
Tao Ma8990e442011-02-23 22:45:26 +08001137 trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno,
1138 (unsigned long long)oi2->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001139
Mark Fashehccd979b2005-12-15 14:31:24 -08001140 if (*bh1)
1141 *bh1 = NULL;
1142 if (*bh2)
1143 *bh2 = NULL;
1144
Yiwen Jiangf7a14f32014-06-23 13:22:09 -07001145 /* we always want to lock the one with the lower lockid first.
1146 * and if they are nested, we lock ancestor first */
Mark Fashehccd979b2005-12-15 14:31:24 -08001147 if (oi1->ip_blkno != oi2->ip_blkno) {
Yiwen Jiangf7a14f32014-06-23 13:22:09 -07001148 inode1_is_ancestor = ocfs2_check_if_ancestor(osb, oi2->ip_blkno,
1149 oi1->ip_blkno);
1150 if (inode1_is_ancestor < 0) {
1151 status = inode1_is_ancestor;
1152 goto bail;
1153 }
1154
1155 inode2_is_ancestor = ocfs2_check_if_ancestor(osb, oi1->ip_blkno,
1156 oi2->ip_blkno);
1157 if (inode2_is_ancestor < 0) {
1158 status = inode2_is_ancestor;
1159 goto bail;
1160 }
1161
1162 if ((inode1_is_ancestor == 1) ||
1163 (oi1->ip_blkno < oi2->ip_blkno &&
1164 inode2_is_ancestor == 0)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001165 /* switch id1 and id2 around */
Fabian Frederickab1ba022015-06-24 16:55:31 -07001166 swap(bh2, bh1);
1167 swap(inode2, inode1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001168 }
1169 /* lock id2 */
Jan Karacb257972009-06-04 15:26:50 +02001170 status = ocfs2_inode_lock_nested(inode2, bh2, 1,
Xue jiufei53dc20b2015-01-08 14:32:23 -08001171 rename == 1 ? OI_LS_RENAME1 : OI_LS_PARENT);
Mark Fashehccd979b2005-12-15 14:31:24 -08001172 if (status < 0) {
1173 if (status != -ENOENT)
1174 mlog_errno(status);
1175 goto bail;
1176 }
1177 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001178
Mark Fashehccd979b2005-12-15 14:31:24 -08001179 /* lock id1 */
Xue jiufei53dc20b2015-01-08 14:32:23 -08001180 status = ocfs2_inode_lock_nested(inode1, bh1, 1,
1181 rename == 1 ? OI_LS_RENAME2 : OI_LS_PARENT);
Mark Fashehccd979b2005-12-15 14:31:24 -08001182 if (status < 0) {
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001183 /*
1184 * An error return must mean that no cluster locks
1185 * were held on function exit.
1186 */
Tao Ma1e6d9152010-12-20 16:21:11 +08001187 if (oi1->ip_blkno != oi2->ip_blkno) {
Mark Fashehe63aecb62007-10-18 15:30:42 -07001188 ocfs2_inode_unlock(inode2, 1);
Tao Ma1e6d9152010-12-20 16:21:11 +08001189 brelse(*bh2);
1190 *bh2 = NULL;
1191 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001192
Mark Fashehccd979b2005-12-15 14:31:24 -08001193 if (status != -ENOENT)
1194 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001195 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001196
Tao Ma8990e442011-02-23 22:45:26 +08001197 trace_ocfs2_double_lock_end(
1198 (unsigned long long)OCFS2_I(inode1)->ip_blkno,
1199 (unsigned long long)OCFS2_I(inode2)->ip_blkno);
1200
Mark Fashehccd979b2005-12-15 14:31:24 -08001201bail:
Tao Mac1e8d352011-03-07 16:43:21 +08001202 if (status)
1203 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001204 return status;
1205}
1206
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001207static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2)
1208{
Mark Fashehe63aecb62007-10-18 15:30:42 -07001209 ocfs2_inode_unlock(inode1, 1);
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001210
1211 if (inode1 != inode2)
Mark Fashehe63aecb62007-10-18 15:30:42 -07001212 ocfs2_inode_unlock(inode2, 1);
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001213}
1214
Mark Fashehccd979b2005-12-15 14:31:24 -08001215static int ocfs2_rename(struct inode *old_dir,
1216 struct dentry *old_dentry,
1217 struct inode *new_dir,
1218 struct dentry *new_dentry)
1219{
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001220 int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0;
1221 int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0;
David Howells2b0143b2015-03-17 22:25:59 +00001222 struct inode *old_inode = d_inode(old_dentry);
1223 struct inode *new_inode = d_inode(new_dentry);
Mark Fasheh5098c272006-10-05 18:12:57 -07001224 struct inode *orphan_dir = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001225 struct ocfs2_dinode *newfe = NULL;
1226 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
Mark Fashehccd979b2005-12-15 14:31:24 -08001227 struct buffer_head *newfe_bh = NULL;
Mark Fasheh592282c2007-01-02 17:59:40 -08001228 struct buffer_head *old_inode_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001229 struct ocfs2_super *osb = NULL;
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001230 u64 newfe_blkno, old_de_ino;
Mark Fasheh1fabe142006-10-09 18:11:45 -07001231 handle_t *handle = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001232 struct buffer_head *old_dir_bh = NULL;
1233 struct buffer_head *new_dir_bh = NULL;
Al Viro847c9db2012-02-12 21:00:05 -05001234 u32 old_dir_nlink = old_dir->i_nlink;
Sunil Mushran480214d2007-08-06 15:11:56 -07001235 struct ocfs2_dinode *old_di;
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001236 struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, };
1237 struct ocfs2_dir_lookup_result target_lookup_res = { NULL, };
1238 struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, };
1239 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
1240 struct ocfs2_dir_lookup_result target_insert = { NULL, };
alex chen5fb1beb2014-06-23 13:22:07 -07001241 bool should_add_orphan = false;
Mark Fashehccd979b2005-12-15 14:31:24 -08001242
1243 /* At some point it might be nice to break this function up a
1244 * bit. */
1245
Tao Ma8990e442011-02-23 22:45:26 +08001246 trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry,
1247 old_dentry->d_name.len, old_dentry->d_name.name,
1248 new_dentry->d_name.len, new_dentry->d_name.name);
Mark Fashehccd979b2005-12-15 14:31:24 -08001249
Jan Kara9c89fe02015-07-14 13:36:02 +02001250 status = dquot_initialize(old_dir);
1251 if (status) {
1252 mlog_errno(status);
1253 goto bail;
1254 }
1255 status = dquot_initialize(new_dir);
1256 if (status) {
1257 mlog_errno(status);
1258 goto bail;
1259 }
Christoph Hellwig907f4552010-03-03 09:05:06 -05001260
Mark Fashehccd979b2005-12-15 14:31:24 -08001261 osb = OCFS2_SB(old_dir->i_sb);
1262
1263 if (new_inode) {
1264 if (!igrab(new_inode))
1265 BUG();
1266 }
1267
Uwe Kleine-König1b3c3712007-02-17 19:23:03 +01001268 /* Assume a directory hierarchy thusly:
Mark Fashehccd979b2005-12-15 14:31:24 -08001269 * a/b/c
1270 * a/d
1271 * a,b,c, and d are all directories.
1272 *
1273 * from cwd of 'a' on both nodes:
1274 * node1: mv b/c d
1275 * node2: mv d b/c
1276 *
1277 * And that's why, just like the VFS, we need a file system
1278 * rename lock. */
Jan Kara5dabd692008-02-21 18:00:00 +01001279 if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001280 status = ocfs2_rename_lock(osb);
1281 if (status < 0) {
1282 mlog_errno(status);
1283 goto bail;
1284 }
1285 rename_lock = 1;
Yiwen Jiangf7a14f32014-06-23 13:22:09 -07001286
1287 /* here we cannot guarantee the inodes haven't just been
1288 * changed, so check if they are nested again */
1289 status = ocfs2_check_if_ancestor(osb, new_dir->i_ino,
1290 old_inode->i_ino);
1291 if (status < 0) {
1292 mlog_errno(status);
1293 goto bail;
1294 } else if (status == 1) {
1295 status = -EPERM;
1296 trace_ocfs2_rename_not_permitted(
1297 (unsigned long long)old_inode->i_ino,
1298 (unsigned long long)new_dir->i_ino);
1299 goto bail;
1300 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001301 }
1302
Mark Fashehccd979b2005-12-15 14:31:24 -08001303 /* if old and new are the same, this'll just do one lock. */
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001304 status = ocfs2_double_lock(osb, &old_dir_bh, old_dir,
Xue jiufei53dc20b2015-01-08 14:32:23 -08001305 &new_dir_bh, new_dir, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001306 if (status < 0) {
1307 mlog_errno(status);
1308 goto bail;
1309 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001310 parents_locked = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001311
1312 /* make sure both dirs have bhs
1313 * get an extra ref on old_dir_bh if old==new */
1314 if (!new_dir_bh) {
1315 if (old_dir_bh) {
1316 new_dir_bh = old_dir_bh;
1317 get_bh(new_dir_bh);
1318 } else {
1319 mlog(ML_ERROR, "no old_dir_bh!\n");
1320 status = -EIO;
1321 goto bail;
1322 }
1323 }
1324
Mark Fasheh379dfe92006-09-08 14:21:03 -07001325 /*
Mark Fasheh592282c2007-01-02 17:59:40 -08001326 * Aside from allowing a meta data update, the locking here
Mark Fasheh34d024f2007-09-24 15:56:19 -07001327 * also ensures that the downconvert thread on other nodes
1328 * won't have to concurrently downconvert the inode and the
1329 * dentry locks.
Mark Fasheh379dfe92006-09-08 14:21:03 -07001330 */
Jan Karacb257972009-06-04 15:26:50 +02001331 status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1,
1332 OI_LS_PARENT);
Mark Fasheh379dfe92006-09-08 14:21:03 -07001333 if (status < 0) {
1334 if (status != -ENOENT)
Mark Fashehccd979b2005-12-15 14:31:24 -08001335 mlog_errno(status);
Mark Fasheh379dfe92006-09-08 14:21:03 -07001336 goto bail;
1337 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001338 old_child_locked = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001339
Mark Fasheh379dfe92006-09-08 14:21:03 -07001340 status = ocfs2_remote_dentry_delete(old_dentry);
1341 if (status < 0) {
1342 mlog_errno(status);
1343 goto bail;
1344 }
1345
1346 if (S_ISDIR(old_inode->i_mode)) {
Mark Fasheh38760e22007-09-11 17:21:56 -07001347 u64 old_inode_parent;
Mark Fashehccd979b2005-12-15 14:31:24 -08001348
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001349 update_dot_dot = 1;
Mark Fasheh38760e22007-09-11 17:21:56 -07001350 status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001351 old_inode,
1352 &old_inode_dot_dot_res);
Mark Fasheh38760e22007-09-11 17:21:56 -07001353 if (status) {
1354 status = -EIO;
Mark Fashehccd979b2005-12-15 14:31:24 -08001355 goto bail;
Mark Fasheh38760e22007-09-11 17:21:56 -07001356 }
1357
1358 if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) {
1359 status = -EIO;
Mark Fashehccd979b2005-12-15 14:31:24 -08001360 goto bail;
Mark Fasheh38760e22007-09-11 17:21:56 -07001361 }
1362
1363 if (!new_inode && new_dir != old_dir &&
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001364 new_dir->i_nlink >= ocfs2_link_max(osb)) {
Mark Fasheh38760e22007-09-11 17:21:56 -07001365 status = -EMLINK;
1366 goto bail;
1367 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001368 }
1369
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001370 status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name,
1371 old_dentry->d_name.len,
1372 &old_de_ino);
1373 if (status) {
1374 status = -ENOENT;
Mark Fashehccd979b2005-12-15 14:31:24 -08001375 goto bail;
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001376 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001377
1378 /*
1379 * Check for inode number is _not_ due to possible IO errors.
1380 * We might rmdir the source, keep it as pwd of some process
1381 * and merrily kill the link to whatever was created under the
1382 * same name. Goodbye sticky bit ;-<
1383 */
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001384 if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) {
1385 status = -ENOENT;
Mark Fashehccd979b2005-12-15 14:31:24 -08001386 goto bail;
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001387 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001388
1389 /* check if the target already exists (in which case we need
1390 * to delete it */
1391 status = ocfs2_find_files_on_disk(new_dentry->d_name.name,
1392 new_dentry->d_name.len,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001393 &newfe_blkno, new_dir,
1394 &target_lookup_res);
Mark Fashehccd979b2005-12-15 14:31:24 -08001395 /* The only error we allow here is -ENOENT because the new
1396 * file not existing is perfectly valid. */
1397 if ((status < 0) && (status != -ENOENT)) {
1398 /* If we cannot find the file specified we should just */
1399 /* return the error... */
1400 mlog_errno(status);
1401 goto bail;
1402 }
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001403 if (status == 0)
1404 target_exists = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001405
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001406 if (!target_exists && new_inode) {
Srinivas Eedae325a882007-10-31 16:49:43 -07001407 /*
1408 * Target was unlinked by another node while we were
1409 * waiting to get to ocfs2_rename(). There isn't
1410 * anything we can do here to help the situation, so
1411 * bubble up the appropriate error.
1412 */
1413 status = -ENOENT;
1414 goto bail;
1415 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001416
1417 /* In case we need to overwrite an existing file, we blow it
1418 * away first */
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001419 if (target_exists) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001420 /* VFS didn't think there existed an inode here, but
1421 * someone else in the cluster must have raced our
1422 * rename to create one. Today we error cleanly, in
1423 * the future we should consider calling iget to build
1424 * a new struct inode for this entry. */
1425 if (!new_inode) {
1426 status = -EACCES;
1427
Tao Ma8990e442011-02-23 22:45:26 +08001428 trace_ocfs2_rename_target_exists(new_dentry->d_name.len,
1429 new_dentry->d_name.name);
Mark Fashehccd979b2005-12-15 14:31:24 -08001430 goto bail;
1431 }
1432
1433 if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) {
1434 status = -EACCES;
1435
Tao Ma8990e442011-02-23 22:45:26 +08001436 trace_ocfs2_rename_disagree(
Mark Fashehb06970532006-03-03 10:24:33 -08001437 (unsigned long long)OCFS2_I(new_inode)->ip_blkno,
1438 (unsigned long long)newfe_blkno,
Mark Fashehccd979b2005-12-15 14:31:24 -08001439 OCFS2_I(new_inode)->ip_flags);
1440 goto bail;
1441 }
1442
Mark Fashehe63aecb62007-10-18 15:30:42 -07001443 status = ocfs2_inode_lock(new_inode, &newfe_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001444 if (status < 0) {
1445 if (status != -ENOENT)
1446 mlog_errno(status);
1447 goto bail;
1448 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001449 new_child_locked = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001450
Mark Fasheh379dfe92006-09-08 14:21:03 -07001451 status = ocfs2_remote_dentry_delete(new_dentry);
Mark Fashehccd979b2005-12-15 14:31:24 -08001452 if (status < 0) {
1453 mlog_errno(status);
1454 goto bail;
1455 }
1456
1457 newfe = (struct ocfs2_dinode *) newfe_bh->b_data;
1458
Tao Ma8990e442011-02-23 22:45:26 +08001459 trace_ocfs2_rename_over_existing(
Mark Fashehb06970532006-03-03 10:24:33 -08001460 (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ?
Mark Fashehccd979b2005-12-15 14:31:24 -08001461 (unsigned long long)newfe_bh->b_blocknr : 0ULL);
1462
1463 if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) {
Mark Fasheh5098c272006-10-05 18:12:57 -07001464 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
Tao Ma19bd3412009-08-18 11:44:10 +08001465 OCFS2_I(new_inode)->ip_blkno,
Joseph Qi06ee5c72015-02-16 15:59:54 -08001466 orphan_name, &orphan_insert,
1467 false);
Mark Fashehccd979b2005-12-15 14:31:24 -08001468 if (status < 0) {
1469 mlog_errno(status);
1470 goto bail;
1471 }
alex chen5fb1beb2014-06-23 13:22:07 -07001472 should_add_orphan = true;
Mark Fashehccd979b2005-12-15 14:31:24 -08001473 }
1474 } else {
David Howells2b0143b2015-03-17 22:25:59 +00001475 BUG_ON(d_inode(new_dentry->d_parent) != new_dir);
Mark Fashehccd979b2005-12-15 14:31:24 -08001476
1477 status = ocfs2_check_dir_for_entry(new_dir,
1478 new_dentry->d_name.name,
1479 new_dentry->d_name.len);
1480 if (status)
1481 goto bail;
1482
1483 status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh,
1484 new_dentry->d_name.name,
1485 new_dentry->d_name.len,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001486 &target_insert);
Mark Fashehccd979b2005-12-15 14:31:24 -08001487 if (status < 0) {
1488 mlog_errno(status);
1489 goto bail;
1490 }
1491 }
1492
Jan Karaa90714c2008-10-09 19:38:40 +02001493 handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb));
Mark Fashehccd979b2005-12-15 14:31:24 -08001494 if (IS_ERR(handle)) {
1495 status = PTR_ERR(handle);
1496 handle = NULL;
1497 mlog_errno(status);
1498 goto bail;
1499 }
1500
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001501 if (target_exists) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001502 if (S_ISDIR(new_inode->i_mode)) {
Mark Fashehb80b5492009-02-18 11:41:38 -08001503 if (new_inode->i_nlink != 2 ||
1504 !ocfs2_empty_dir(new_inode)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001505 status = -ENOTEMPTY;
1506 goto bail;
1507 }
1508 }
Joel Becker0cf2f762009-02-12 16:41:25 -08001509 status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode),
1510 newfe_bh,
Joel Becker13723d02008-10-17 19:25:01 -07001511 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -08001512 if (status < 0) {
1513 mlog_errno(status);
1514 goto bail;
1515 }
1516
Mark Fashehccd979b2005-12-15 14:31:24 -08001517 /* change the dirent to point to the correct inode */
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001518 status = ocfs2_update_entry(new_dir, handle, &target_lookup_res,
1519 old_inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001520 if (status < 0) {
1521 mlog_errno(status);
1522 goto bail;
1523 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001524 new_dir->i_version++;
Mark Fashehccd979b2005-12-15 14:31:24 -08001525
1526 if (S_ISDIR(new_inode->i_mode))
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001527 ocfs2_set_links_count(newfe, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001528 else
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001529 ocfs2_add_links_count(newfe, -1);
Joel Beckerec20cec2010-03-19 14:13:52 -07001530 ocfs2_journal_dirty(handle, newfe_bh);
alex chen5fb1beb2014-06-23 13:22:07 -07001531 if (should_add_orphan) {
1532 status = ocfs2_orphan_add(osb, handle, new_inode,
1533 newfe_bh, orphan_name,
Joseph Qi06ee5c72015-02-16 15:59:54 -08001534 &orphan_insert, orphan_dir, false);
alex chen5fb1beb2014-06-23 13:22:07 -07001535 if (status < 0) {
1536 mlog_errno(status);
1537 goto bail;
1538 }
1539 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001540 } else {
1541 /* if the name was not found in new_dir, add it now */
1542 status = ocfs2_add_entry(handle, new_dentry, old_inode,
1543 OCFS2_I(old_inode)->ip_blkno,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001544 new_dir_bh, &target_insert);
Mark Fashehccd979b2005-12-15 14:31:24 -08001545 }
1546
1547 old_inode->i_ctime = CURRENT_TIME;
1548 mark_inode_dirty(old_inode);
Sunil Mushran480214d2007-08-06 15:11:56 -07001549
Joel Becker0cf2f762009-02-12 16:41:25 -08001550 status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode),
1551 old_inode_bh,
Joel Becker13723d02008-10-17 19:25:01 -07001552 OCFS2_JOURNAL_ACCESS_WRITE);
Sunil Mushran480214d2007-08-06 15:11:56 -07001553 if (status >= 0) {
1554 old_di = (struct ocfs2_dinode *) old_inode_bh->b_data;
1555
1556 old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec);
1557 old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec);
Joel Beckerec20cec2010-03-19 14:13:52 -07001558 ocfs2_journal_dirty(handle, old_inode_bh);
Sunil Mushran480214d2007-08-06 15:11:56 -07001559 } else
1560 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001561
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001562 /*
1563 * Now that the name has been added to new_dir, remove the old name.
1564 *
1565 * We don't keep any directory entry context around until now
1566 * because the insert might have changed the type of directory
1567 * we're dealing with.
1568 */
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001569 status = ocfs2_find_entry(old_dentry->d_name.name,
1570 old_dentry->d_name.len, old_dir,
1571 &old_entry_lookup);
1572 if (status)
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001573 goto bail;
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001574
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001575 status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08001576 if (status < 0) {
1577 mlog_errno(status);
1578 goto bail;
1579 }
1580
1581 if (new_inode) {
Miklos Szeredi6d6b77f2011-10-28 14:13:28 +02001582 drop_nlink(new_inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001583 new_inode->i_ctime = CURRENT_TIME;
1584 }
1585 old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME;
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001586
1587 if (update_dot_dot) {
1588 status = ocfs2_update_entry(old_inode, handle,
1589 &old_inode_dot_dot_res, new_dir);
Miklos Szeredi6d6b77f2011-10-28 14:13:28 +02001590 drop_nlink(old_dir);
Mark Fashehccd979b2005-12-15 14:31:24 -08001591 if (new_inode) {
Miklos Szeredi6d6b77f2011-10-28 14:13:28 +02001592 drop_nlink(new_inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001593 } else {
Dave Hansend8c76e62006-09-30 23:29:04 -07001594 inc_nlink(new_dir);
Mark Fashehccd979b2005-12-15 14:31:24 -08001595 mark_inode_dirty(new_dir);
1596 }
1597 }
1598 mark_inode_dirty(old_dir);
Mark Fasheh592282c2007-01-02 17:59:40 -08001599 ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh);
1600 if (new_inode) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001601 mark_inode_dirty(new_inode);
Mark Fasheh592282c2007-01-02 17:59:40 -08001602 ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh);
1603 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001604
Mark Fasheh592282c2007-01-02 17:59:40 -08001605 if (old_dir != new_dir) {
1606 /* Keep the same times on both directories.*/
1607 new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime;
1608
1609 /*
1610 * This will also pick up the i_nlink change from the
1611 * block above.
1612 */
1613 ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh);
1614 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001615
1616 if (old_dir_nlink != old_dir->i_nlink) {
1617 if (!old_dir_bh) {
1618 mlog(ML_ERROR, "need to change nlink for old dir "
Mark Fashehb06970532006-03-03 10:24:33 -08001619 "%llu from %d to %d but bh is NULL!\n",
1620 (unsigned long long)OCFS2_I(old_dir)->ip_blkno,
1621 (int)old_dir_nlink, old_dir->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -08001622 } else {
1623 struct ocfs2_dinode *fe;
Joel Becker0cf2f762009-02-12 16:41:25 -08001624 status = ocfs2_journal_access_di(handle,
1625 INODE_CACHE(old_dir),
1626 old_dir_bh,
1627 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -08001628 fe = (struct ocfs2_dinode *) old_dir_bh->b_data;
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001629 ocfs2_set_links_count(fe, old_dir->i_nlink);
Joel Beckerec20cec2010-03-19 14:13:52 -07001630 ocfs2_journal_dirty(handle, old_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08001631 }
1632 }
Mark Fasheh379dfe92006-09-08 14:21:03 -07001633 ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir);
Mark Fashehccd979b2005-12-15 14:31:24 -08001634 status = 0;
1635bail:
1636 if (rename_lock)
1637 ocfs2_rename_unlock(osb);
1638
1639 if (handle)
Mark Fasheh02dc1af2006-10-09 16:48:10 -07001640 ocfs2_commit_trans(osb, handle);
Mark Fashehccd979b2005-12-15 14:31:24 -08001641
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001642 if (parents_locked)
1643 ocfs2_double_unlock(old_dir, new_dir);
1644
1645 if (old_child_locked)
Mark Fashehe63aecb62007-10-18 15:30:42 -07001646 ocfs2_inode_unlock(old_inode, 1);
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001647
1648 if (new_child_locked)
Mark Fashehe63aecb62007-10-18 15:30:42 -07001649 ocfs2_inode_unlock(new_inode, 1);
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001650
Mark Fasheh5098c272006-10-05 18:12:57 -07001651 if (orphan_dir) {
1652 /* This was locked for us in ocfs2_prepare_orphan_dir() */
Mark Fashehe63aecb62007-10-18 15:30:42 -07001653 ocfs2_inode_unlock(orphan_dir, 1);
Mark Fasheh5098c272006-10-05 18:12:57 -07001654 mutex_unlock(&orphan_dir->i_mutex);
1655 iput(orphan_dir);
1656 }
1657
Mark Fashehccd979b2005-12-15 14:31:24 -08001658 if (new_inode)
1659 sync_mapping_buffers(old_inode->i_mapping);
1660
1661 if (new_inode)
1662 iput(new_inode);
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001663
1664 ocfs2_free_dir_lookup_result(&target_lookup_res);
1665 ocfs2_free_dir_lookup_result(&old_entry_lookup);
1666 ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res);
1667 ocfs2_free_dir_lookup_result(&orphan_insert);
1668 ocfs2_free_dir_lookup_result(&target_insert);
1669
Mark Fasheha81cb882008-10-07 14:25:16 -07001670 brelse(newfe_bh);
1671 brelse(old_inode_bh);
1672 brelse(old_dir_bh);
1673 brelse(new_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08001674
Tao Mac1e8d352011-03-07 16:43:21 +08001675 if (status)
1676 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001677
1678 return status;
1679}
1680
1681/*
1682 * we expect i_size = strlen(symname). Copy symname into the file
1683 * data, including the null terminator.
1684 */
1685static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
Mark Fasheh1fabe142006-10-09 18:11:45 -07001686 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -08001687 struct inode *inode,
1688 const char *symname)
1689{
1690 struct buffer_head **bhs = NULL;
1691 const char *c;
1692 struct super_block *sb = osb->sb;
Mark Fasheh4f902c32007-03-09 16:26:50 -08001693 u64 p_blkno, p_blocks;
Mark Fashehccd979b2005-12-15 14:31:24 -08001694 int virtual, blocks, status, i, bytes_left;
1695
1696 bytes_left = i_size_read(inode) + 1;
1697 /* we can't trust i_blocks because we're actually going to
1698 * write i_size + 1 bytes. */
1699 blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
1700
Tao Ma8990e442011-02-23 22:45:26 +08001701 trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks,
1702 i_size_read(inode), blocks);
Mark Fashehccd979b2005-12-15 14:31:24 -08001703
1704 /* Sanity check -- make sure we're going to fit. */
1705 if (bytes_left >
1706 ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) {
1707 status = -EIO;
1708 mlog_errno(status);
1709 goto bail;
1710 }
1711
1712 bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL);
1713 if (!bhs) {
1714 status = -ENOMEM;
1715 mlog_errno(status);
1716 goto bail;
1717 }
1718
Mark Fasheh49cb8d22007-03-09 16:21:46 -08001719 status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks,
1720 NULL);
Mark Fashehccd979b2005-12-15 14:31:24 -08001721 if (status < 0) {
1722 mlog_errno(status);
1723 goto bail;
1724 }
1725
1726 /* links can never be larger than one cluster so we know this
1727 * is all going to be contiguous, but do a sanity check
1728 * anyway. */
1729 if ((p_blocks << sb->s_blocksize_bits) < bytes_left) {
1730 status = -EIO;
1731 mlog_errno(status);
1732 goto bail;
1733 }
1734
1735 virtual = 0;
1736 while(bytes_left > 0) {
1737 c = &symname[virtual * sb->s_blocksize];
1738
1739 bhs[virtual] = sb_getblk(sb, p_blkno);
1740 if (!bhs[virtual]) {
1741 status = -ENOMEM;
1742 mlog_errno(status);
1743 goto bail;
1744 }
Joel Becker8cb471e2009-02-10 20:00:41 -08001745 ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode),
1746 bhs[virtual]);
Mark Fashehccd979b2005-12-15 14:31:24 -08001747
Joel Becker0cf2f762009-02-12 16:41:25 -08001748 status = ocfs2_journal_access(handle, INODE_CACHE(inode),
1749 bhs[virtual],
Mark Fashehccd979b2005-12-15 14:31:24 -08001750 OCFS2_JOURNAL_ACCESS_CREATE);
1751 if (status < 0) {
1752 mlog_errno(status);
1753 goto bail;
1754 }
1755
1756 memset(bhs[virtual]->b_data, 0, sb->s_blocksize);
1757
1758 memcpy(bhs[virtual]->b_data, c,
1759 (bytes_left > sb->s_blocksize) ? sb->s_blocksize :
1760 bytes_left);
1761
Joel Beckerec20cec2010-03-19 14:13:52 -07001762 ocfs2_journal_dirty(handle, bhs[virtual]);
Mark Fashehccd979b2005-12-15 14:31:24 -08001763
1764 virtual++;
1765 p_blkno++;
1766 bytes_left -= sb->s_blocksize;
1767 }
1768
1769 status = 0;
1770bail:
1771
1772 if (bhs) {
1773 for(i = 0; i < blocks; i++)
Mark Fasheha81cb882008-10-07 14:25:16 -07001774 brelse(bhs[i]);
Mark Fashehccd979b2005-12-15 14:31:24 -08001775 kfree(bhs);
1776 }
1777
Tao Mac1e8d352011-03-07 16:43:21 +08001778 if (status)
1779 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001780 return status;
1781}
1782
1783static int ocfs2_symlink(struct inode *dir,
1784 struct dentry *dentry,
1785 const char *symname)
1786{
1787 int status, l, credits;
1788 u64 newsize;
1789 struct ocfs2_super *osb = NULL;
1790 struct inode *inode = NULL;
1791 struct super_block *sb;
1792 struct buffer_head *new_fe_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001793 struct buffer_head *parent_fe_bh = NULL;
1794 struct ocfs2_dinode *fe = NULL;
1795 struct ocfs2_dinode *dirfe;
Mark Fasheh1fabe142006-10-09 18:11:45 -07001796 handle_t *handle = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001797 struct ocfs2_alloc_context *inode_ac = NULL;
1798 struct ocfs2_alloc_context *data_ac = NULL;
Tiger Yang534eadd2008-11-14 11:16:41 +08001799 struct ocfs2_alloc_context *xattr_ac = NULL;
1800 int want_clusters = 0;
1801 int xattr_credits = 0;
1802 struct ocfs2_security_xattr_info si = {
1803 .enable = 1,
1804 };
Jan Karaa90714c2008-10-09 19:38:40 +02001805 int did_quota = 0, did_quota_inode = 0;
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001806 struct ocfs2_dir_lookup_result lookup = { NULL, };
Joel Becker547ba7c2010-05-10 11:56:52 -07001807 sigset_t oldset;
1808 int did_block_signals = 0;
jiangyiwen595297a2014-06-23 13:22:09 -07001809 struct ocfs2_dentry_lock *dl = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001810
Tao Ma8990e442011-02-23 22:45:26 +08001811 trace_ocfs2_symlink_begin(dir, dentry, symname,
1812 dentry->d_name.len, dentry->d_name.name);
Mark Fashehccd979b2005-12-15 14:31:24 -08001813
Jan Kara9c89fe02015-07-14 13:36:02 +02001814 status = dquot_initialize(dir);
1815 if (status) {
1816 mlog_errno(status);
1817 goto bail;
1818 }
Christoph Hellwig907f4552010-03-03 09:05:06 -05001819
Mark Fashehccd979b2005-12-15 14:31:24 -08001820 sb = dir->i_sb;
1821 osb = OCFS2_SB(sb);
1822
1823 l = strlen(symname) + 1;
1824
1825 credits = ocfs2_calc_symlink_credits(sb);
1826
Mark Fashehccd979b2005-12-15 14:31:24 -08001827 /* lock the parent directory */
Mark Fashehe63aecb62007-10-18 15:30:42 -07001828 status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001829 if (status < 0) {
1830 if (status != -ENOENT)
1831 mlog_errno(status);
Mark Fasheh6d8fc402006-10-06 11:54:33 -07001832 return status;
Mark Fashehccd979b2005-12-15 14:31:24 -08001833 }
1834
1835 dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001836 if (!ocfs2_read_links_count(dirfe)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001837 /* can't make a file in a deleted directory. */
1838 status = -ENOENT;
1839 goto bail;
1840 }
1841
1842 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
1843 dentry->d_name.len);
1844 if (status)
1845 goto bail;
1846
1847 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
1848 dentry->d_name.name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001849 dentry->d_name.len, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08001850 if (status < 0) {
1851 mlog_errno(status);
1852 goto bail;
1853 }
1854
Mark Fashehda5cbf22006-10-06 18:34:35 -07001855 status = ocfs2_reserve_new_inode(osb, &inode_ac);
Mark Fashehccd979b2005-12-15 14:31:24 -08001856 if (status < 0) {
1857 if (status != -ENOSPC)
1858 mlog_errno(status);
1859 goto bail;
1860 }
1861
Tiger Yangf5d36202008-11-14 11:15:44 +08001862 inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO);
Jan Kara9c89fe02015-07-14 13:36:02 +02001863 if (IS_ERR(inode)) {
1864 status = PTR_ERR(inode);
1865 inode = NULL;
Tiger Yangf5d36202008-11-14 11:15:44 +08001866 mlog_errno(status);
1867 goto bail;
1868 }
1869
Tiger Yang534eadd2008-11-14 11:16:41 +08001870 /* get security xattr */
Eric Paris2a7dba32011-02-01 11:05:39 -05001871 status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si);
Tiger Yang534eadd2008-11-14 11:16:41 +08001872 if (status) {
1873 if (status == -EOPNOTSUPP)
1874 si.enable = 0;
1875 else {
1876 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001877 goto bail;
1878 }
1879 }
1880
Tiger Yang534eadd2008-11-14 11:16:41 +08001881 /* calculate meta data/clusters for setting security xattr */
1882 if (si.enable) {
1883 status = ocfs2_calc_security_init(dir, &si, &want_clusters,
1884 &xattr_credits, &xattr_ac);
1885 if (status < 0) {
1886 mlog_errno(status);
1887 goto bail;
1888 }
1889 }
1890
1891 /* don't reserve bitmap space for fast symlinks. */
1892 if (l > ocfs2_fast_symlink_chars(sb))
1893 want_clusters += 1;
1894
1895 status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
1896 if (status < 0) {
1897 if (status != -ENOSPC)
1898 mlog_errno(status);
1899 goto bail;
1900 }
1901
1902 handle = ocfs2_start_trans(osb, credits + xattr_credits);
Mark Fashehccd979b2005-12-15 14:31:24 -08001903 if (IS_ERR(handle)) {
1904 status = PTR_ERR(handle);
1905 handle = NULL;
1906 mlog_errno(status);
1907 goto bail;
1908 }
1909
Joel Becker547ba7c2010-05-10 11:56:52 -07001910 /* Starting to change things, restart is no longer possible. */
1911 ocfs2_block_signals(&oldset);
1912 did_block_signals = 1;
1913
Christoph Hellwig63936dd2010-03-03 09:05:01 -05001914 status = dquot_alloc_inode(inode);
1915 if (status)
Jan Karaa90714c2008-10-09 19:38:40 +02001916 goto bail;
Jan Karaa90714c2008-10-09 19:38:40 +02001917 did_quota_inode = 1;
1918
Tao Ma8990e442011-02-23 22:45:26 +08001919 trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len,
1920 dentry->d_name.name,
1921 (unsigned long long)OCFS2_I(dir)->ip_blkno,
1922 inode->i_mode);
Tao Ma19bd3412009-08-18 11:44:10 +08001923
1924 status = ocfs2_mknod_locked(osb, dir, inode,
Tiger Yangf5d36202008-11-14 11:15:44 +08001925 0, &new_fe_bh, parent_fe_bh, handle,
1926 inode_ac);
Mark Fashehccd979b2005-12-15 14:31:24 -08001927 if (status < 0) {
1928 mlog_errno(status);
1929 goto bail;
1930 }
1931
1932 fe = (struct ocfs2_dinode *) new_fe_bh->b_data;
1933 inode->i_rdev = 0;
1934 newsize = l - 1;
Al Viroea022dfb2012-05-03 10:14:29 -04001935 inode->i_op = &ocfs2_symlink_inode_operations;
Mark Fashehccd979b2005-12-15 14:31:24 -08001936 if (l > ocfs2_fast_symlink_chars(sb)) {
Mark Fashehdcd05382007-01-16 11:32:23 -08001937 u32 offset = 0;
1938
Christoph Hellwig5dd40562010-03-03 09:05:00 -05001939 status = dquot_alloc_space_nodirty(inode,
1940 ocfs2_clusters_to_bytes(osb->sb, 1));
1941 if (status)
Jan Karaa90714c2008-10-09 19:38:40 +02001942 goto bail;
Jan Karaa90714c2008-10-09 19:38:40 +02001943 did_quota = 1;
Al Viroea022dfb2012-05-03 10:14:29 -04001944 inode->i_mapping->a_ops = &ocfs2_aops;
Tao Ma0eb8d472008-08-18 17:38:45 +08001945 status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0,
1946 new_fe_bh,
1947 handle, data_ac, NULL,
1948 NULL);
Mark Fashehccd979b2005-12-15 14:31:24 -08001949 if (status < 0) {
1950 if (status != -ENOSPC && status != -EINTR) {
Mark Fashehb06970532006-03-03 10:24:33 -08001951 mlog(ML_ERROR,
1952 "Failed to extend file to %llu\n",
1953 (unsigned long long)newsize);
Mark Fashehccd979b2005-12-15 14:31:24 -08001954 mlog_errno(status);
1955 status = -ENOSPC;
1956 }
1957 goto bail;
1958 }
1959 i_size_write(inode, newsize);
Mark Fasheh8110b072007-03-22 16:53:23 -07001960 inode->i_blocks = ocfs2_inode_sector_count(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001961 } else {
Al Viroea022dfb2012-05-03 10:14:29 -04001962 inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops;
Mark Fashehccd979b2005-12-15 14:31:24 -08001963 memcpy((char *) fe->id2.i_symlink, symname, l);
1964 i_size_write(inode, newsize);
1965 inode->i_blocks = 0;
1966 }
1967
1968 status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh);
1969 if (status < 0) {
1970 mlog_errno(status);
1971 goto bail;
1972 }
1973
1974 if (!ocfs2_inode_is_fast_symlink(inode)) {
1975 status = ocfs2_create_symlink_data(osb, handle, inode,
1976 symname);
1977 if (status < 0) {
1978 mlog_errno(status);
1979 goto bail;
1980 }
1981 }
1982
Tiger Yang534eadd2008-11-14 11:16:41 +08001983 if (si.enable) {
1984 status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
1985 xattr_ac, data_ac);
1986 if (status < 0) {
1987 mlog_errno(status);
1988 goto bail;
1989 }
1990 }
1991
Mark Fasheha9743fc2010-04-23 11:42:22 -07001992 /*
1993 * Do this before adding the entry to the directory. We add
1994 * also set d_op after success so that ->d_iput() will cleanup
1995 * the dentry lock even if ocfs2_add_entry() fails below.
1996 */
1997 status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
1998 if (status) {
1999 mlog_errno(status);
2000 goto bail;
2001 }
Mark Fasheha9743fc2010-04-23 11:42:22 -07002002
jiangyiwen595297a2014-06-23 13:22:09 -07002003 dl = dentry->d_fsdata;
2004
Mark Fashehccd979b2005-12-15 14:31:24 -08002005 status = ocfs2_add_entry(handle, dentry, inode,
2006 le64_to_cpu(fe->i_blkno), parent_fe_bh,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002007 &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08002008 if (status < 0) {
2009 mlog_errno(status);
2010 goto bail;
2011 }
2012
2013 insert_inode_hash(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08002014 d_instantiate(dentry, inode);
2015bail:
Jan Karaa90714c2008-10-09 19:38:40 +02002016 if (status < 0 && did_quota)
Christoph Hellwig5dd40562010-03-03 09:05:00 -05002017 dquot_free_space_nodirty(inode,
Jan Karaa90714c2008-10-09 19:38:40 +02002018 ocfs2_clusters_to_bytes(osb->sb, 1));
2019 if (status < 0 && did_quota_inode)
Christoph Hellwig63936dd2010-03-03 09:05:01 -05002020 dquot_free_inode(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08002021 if (handle)
Mark Fasheh02dc1af2006-10-09 16:48:10 -07002022 ocfs2_commit_trans(osb, handle);
Mark Fasheh6d8fc402006-10-06 11:54:33 -07002023
Mark Fashehe63aecb62007-10-18 15:30:42 -07002024 ocfs2_inode_unlock(dir, 1);
Joel Becker547ba7c2010-05-10 11:56:52 -07002025 if (did_block_signals)
2026 ocfs2_unblock_signals(&oldset);
Mark Fasheh6d8fc402006-10-06 11:54:33 -07002027
Mark Fasheha81cb882008-10-07 14:25:16 -07002028 brelse(new_fe_bh);
2029 brelse(parent_fe_bh);
Tiger Yang534eadd2008-11-14 11:16:41 +08002030 kfree(si.value);
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002031 ocfs2_free_dir_lookup_result(&lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08002032 if (inode_ac)
2033 ocfs2_free_alloc_context(inode_ac);
2034 if (data_ac)
2035 ocfs2_free_alloc_context(data_ac);
Tiger Yang534eadd2008-11-14 11:16:41 +08002036 if (xattr_ac)
2037 ocfs2_free_alloc_context(xattr_ac);
Tiger Yangf5d36202008-11-14 11:15:44 +08002038 if ((status < 0) && inode) {
jiangyiwen595297a2014-06-23 13:22:09 -07002039 if (dl)
2040 ocfs2_cleanup_add_entry_failure(osb, dentry, inode);
2041
Li Dongyangab41fdc2010-04-22 16:11:25 +08002042 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR;
Tiger Yangf5d36202008-11-14 11:15:44 +08002043 clear_nlink(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08002044 iput(inode);
Tiger Yangf5d36202008-11-14 11:15:44 +08002045 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002046
Tao Mac1e8d352011-03-07 16:43:21 +08002047 if (status)
2048 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08002049
2050 return status;
2051}
2052
Mark Fashehccd979b2005-12-15 14:31:24 -08002053static int ocfs2_blkno_stringify(u64 blkno, char *name)
2054{
2055 int status, namelen;
2056
Mark Fashehb06970532006-03-03 10:24:33 -08002057 namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx",
2058 (long long)blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08002059 if (namelen <= 0) {
2060 if (namelen)
2061 status = namelen;
2062 else
2063 status = -EINVAL;
2064 mlog_errno(status);
2065 goto bail;
2066 }
2067 if (namelen != OCFS2_ORPHAN_NAMELEN) {
2068 status = -EINVAL;
2069 mlog_errno(status);
2070 goto bail;
2071 }
2072
Tao Ma8990e442011-02-23 22:45:26 +08002073 trace_ocfs2_blkno_stringify(blkno, name, namelen);
Mark Fashehccd979b2005-12-15 14:31:24 -08002074
2075 status = 0;
2076bail:
Tao Mac1e8d352011-03-07 16:43:21 +08002077 if (status < 0)
2078 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08002079 return status;
2080}
2081
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002082static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb,
2083 struct inode **ret_orphan_dir,
2084 struct buffer_head **ret_orphan_dir_bh)
2085{
2086 struct inode *orphan_dir_inode;
2087 struct buffer_head *orphan_dir_bh = NULL;
2088 int ret = 0;
2089
2090 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
2091 ORPHAN_DIR_SYSTEM_INODE,
2092 osb->slot_num);
2093 if (!orphan_dir_inode) {
2094 ret = -ENOENT;
2095 mlog_errno(ret);
2096 return ret;
2097 }
2098
2099 mutex_lock(&orphan_dir_inode->i_mutex);
2100
2101 ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
2102 if (ret < 0) {
2103 mutex_unlock(&orphan_dir_inode->i_mutex);
2104 iput(orphan_dir_inode);
2105
2106 mlog_errno(ret);
2107 return ret;
2108 }
2109
2110 *ret_orphan_dir = orphan_dir_inode;
2111 *ret_orphan_dir_bh = orphan_dir_bh;
2112
2113 return 0;
2114}
2115
2116static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode,
2117 struct buffer_head *orphan_dir_bh,
2118 u64 blkno,
2119 char *name,
Joseph Qi06ee5c72015-02-16 15:59:54 -08002120 struct ocfs2_dir_lookup_result *lookup,
2121 bool dio)
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002122{
2123 int ret;
2124 struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb);
Joseph Qi06ee5c72015-02-16 15:59:54 -08002125 int namelen = dio ?
2126 (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) :
2127 OCFS2_ORPHAN_NAMELEN;
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002128
Joseph Qi06ee5c72015-02-16 15:59:54 -08002129 if (dio) {
2130 ret = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s",
2131 OCFS2_DIO_ORPHAN_PREFIX);
2132 if (ret != OCFS2_DIO_ORPHAN_PREFIX_LEN) {
2133 ret = -EINVAL;
2134 mlog_errno(ret);
2135 return ret;
2136 }
2137
2138 ret = ocfs2_blkno_stringify(blkno,
2139 name + OCFS2_DIO_ORPHAN_PREFIX_LEN);
2140 } else
2141 ret = ocfs2_blkno_stringify(blkno, name);
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002142 if (ret < 0) {
2143 mlog_errno(ret);
2144 return ret;
2145 }
2146
2147 ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode,
2148 orphan_dir_bh, name,
Joseph Qi06ee5c72015-02-16 15:59:54 -08002149 namelen, lookup);
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002150 if (ret < 0) {
2151 mlog_errno(ret);
2152 return ret;
2153 }
2154
2155 return 0;
2156}
2157
2158/**
2159 * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for
2160 * insertion of an orphan.
2161 * @osb: ocfs2 file system
2162 * @ret_orphan_dir: Orphan dir inode - returned locked!
2163 * @blkno: Actual block number of the inode to be inserted into orphan dir.
2164 * @lookup: dir lookup result, to be passed back into functions like
2165 * ocfs2_orphan_add
2166 *
2167 * Returns zero on success and the ret_orphan_dir, name and lookup
2168 * fields will be populated.
2169 *
2170 * Returns non-zero on failure.
2171 */
Mark Fashehccd979b2005-12-15 14:31:24 -08002172static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
Mark Fasheh5098c272006-10-05 18:12:57 -07002173 struct inode **ret_orphan_dir,
Tao Ma19bd3412009-08-18 11:44:10 +08002174 u64 blkno,
Mark Fashehccd979b2005-12-15 14:31:24 -08002175 char *name,
Joseph Qi06ee5c72015-02-16 15:59:54 -08002176 struct ocfs2_dir_lookup_result *lookup,
2177 bool dio)
Mark Fashehccd979b2005-12-15 14:31:24 -08002178{
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002179 struct inode *orphan_dir_inode = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08002180 struct buffer_head *orphan_dir_bh = NULL;
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002181 int ret = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08002182
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002183 ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode,
2184 &orphan_dir_bh);
2185 if (ret < 0) {
2186 mlog_errno(ret);
2187 return ret;
Mark Fashehccd979b2005-12-15 14:31:24 -08002188 }
2189
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002190 ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh,
Joseph Qi06ee5c72015-02-16 15:59:54 -08002191 blkno, name, lookup, dio);
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002192 if (ret < 0) {
2193 mlog_errno(ret);
2194 goto out;
Mark Fashehccd979b2005-12-15 14:31:24 -08002195 }
2196
Mark Fasheh5098c272006-10-05 18:12:57 -07002197 *ret_orphan_dir = orphan_dir_inode;
2198
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002199out:
2200 brelse(orphan_dir_bh);
2201
2202 if (ret) {
2203 ocfs2_inode_unlock(orphan_dir_inode, 1);
Mark Fasheh5098c272006-10-05 18:12:57 -07002204 mutex_unlock(&orphan_dir_inode->i_mutex);
Mark Fashehccd979b2005-12-15 14:31:24 -08002205 iput(orphan_dir_inode);
Mark Fasheh5098c272006-10-05 18:12:57 -07002206 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002207
Tao Mac1e8d352011-03-07 16:43:21 +08002208 if (ret)
2209 mlog_errno(ret);
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002210 return ret;
Mark Fashehccd979b2005-12-15 14:31:24 -08002211}
2212
2213static int ocfs2_orphan_add(struct ocfs2_super *osb,
Mark Fasheh1fabe142006-10-09 18:11:45 -07002214 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -08002215 struct inode *inode,
Tristan Ye3939fda2010-03-19 09:21:09 +08002216 struct buffer_head *fe_bh,
Mark Fashehccd979b2005-12-15 14:31:24 -08002217 char *name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002218 struct ocfs2_dir_lookup_result *lookup,
Joseph Qi06ee5c72015-02-16 15:59:54 -08002219 struct inode *orphan_dir_inode,
2220 bool dio)
Mark Fashehccd979b2005-12-15 14:31:24 -08002221{
Mark Fashehccd979b2005-12-15 14:31:24 -08002222 struct buffer_head *orphan_dir_bh = NULL;
2223 int status = 0;
2224 struct ocfs2_dinode *orphan_fe;
Tristan Ye3939fda2010-03-19 09:21:09 +08002225 struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data;
Joseph Qi06ee5c72015-02-16 15:59:54 -08002226 int namelen = dio ?
2227 (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) :
2228 OCFS2_ORPHAN_NAMELEN;
Mark Fashehccd979b2005-12-15 14:31:24 -08002229
Tao Ma8990e442011-02-23 22:45:26 +08002230 trace_ocfs2_orphan_add_begin(
2231 (unsigned long long)OCFS2_I(inode)->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08002232
Joel Beckerb657c952008-11-13 14:49:11 -08002233 status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08002234 if (status < 0) {
2235 mlog_errno(status);
2236 goto leave;
2237 }
2238
Joel Becker0cf2f762009-02-12 16:41:25 -08002239 status = ocfs2_journal_access_di(handle,
2240 INODE_CACHE(orphan_dir_inode),
2241 orphan_dir_bh,
Joel Becker13723d02008-10-17 19:25:01 -07002242 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -08002243 if (status < 0) {
2244 mlog_errno(status);
2245 goto leave;
2246 }
2247
Tristan Ye3939fda2010-03-19 09:21:09 +08002248 /*
2249 * We're going to journal the change of i_flags and i_orphaned_slot.
2250 * It's safe anyway, though some callers may duplicate the journaling.
2251 * Journaling within the func just make the logic look more
2252 * straightforward.
2253 */
2254 status = ocfs2_journal_access_di(handle,
2255 INODE_CACHE(inode),
2256 fe_bh,
2257 OCFS2_JOURNAL_ACCESS_WRITE);
2258 if (status < 0) {
2259 mlog_errno(status);
2260 goto leave;
2261 }
2262
Younger Liuea454662013-07-03 15:00:58 -07002263 /* we're a cluster, and nlink can change on disk from
2264 * underneath us... */
2265 orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
2266 if (S_ISDIR(inode->i_mode))
2267 ocfs2_add_links_count(orphan_fe, 1);
2268 set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe));
2269 ocfs2_journal_dirty(handle, orphan_dir_bh);
2270
2271 status = __ocfs2_add_entry(handle, orphan_dir_inode, name,
Joseph Qi06ee5c72015-02-16 15:59:54 -08002272 namelen, inode,
Younger Liuea454662013-07-03 15:00:58 -07002273 OCFS2_I(inode)->ip_blkno,
2274 orphan_dir_bh, lookup);
2275 if (status < 0) {
2276 mlog_errno(status);
2277 goto rollback;
2278 }
2279
Joseph Qi06ee5c72015-02-16 15:59:54 -08002280 if (dio) {
2281 /* Update flag OCFS2_DIO_ORPHANED_FL and record the orphan
2282 * slot.
2283 */
2284 fe->i_flags |= cpu_to_le32(OCFS2_DIO_ORPHANED_FL);
2285 fe->i_dio_orphaned_slot = cpu_to_le16(osb->slot_num);
2286 } else {
2287 fe->i_flags |= cpu_to_le32(OCFS2_ORPHANED_FL);
2288 OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR;
Mark Fashehccd979b2005-12-15 14:31:24 -08002289
Joseph Qi06ee5c72015-02-16 15:59:54 -08002290 /* Record which orphan dir our inode now resides
2291 * in. delete_inode will use this to determine which orphan
2292 * dir to lock. */
2293 fe->i_orphaned_slot = cpu_to_le16(osb->slot_num);
2294 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002295
Tristan Ye3939fda2010-03-19 09:21:09 +08002296 ocfs2_journal_dirty(handle, fe_bh);
2297
Tao Ma8990e442011-02-23 22:45:26 +08002298 trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno,
2299 osb->slot_num);
Mark Fashehccd979b2005-12-15 14:31:24 -08002300
Younger Liuea454662013-07-03 15:00:58 -07002301rollback:
2302 if (status < 0) {
2303 if (S_ISDIR(inode->i_mode))
2304 ocfs2_add_links_count(orphan_fe, -1);
2305 set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe));
2306 }
2307
Mark Fashehccd979b2005-12-15 14:31:24 -08002308leave:
Mark Fasheha81cb882008-10-07 14:25:16 -07002309 brelse(orphan_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08002310
Mark Fashehccd979b2005-12-15 14:31:24 -08002311 return status;
2312}
2313
2314/* unlike orphan_add, we expect the orphan dir to already be locked here. */
2315int ocfs2_orphan_del(struct ocfs2_super *osb,
Mark Fasheh1fabe142006-10-09 18:11:45 -07002316 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -08002317 struct inode *orphan_dir_inode,
2318 struct inode *inode,
Joseph Qi06ee5c72015-02-16 15:59:54 -08002319 struct buffer_head *orphan_dir_bh,
2320 bool dio)
Mark Fashehccd979b2005-12-15 14:31:24 -08002321{
Joseph Qi06ee5c72015-02-16 15:59:54 -08002322 const int namelen = OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN;
2323 char name[namelen + 1];
Mark Fashehccd979b2005-12-15 14:31:24 -08002324 struct ocfs2_dinode *orphan_fe;
2325 int status = 0;
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002326 struct ocfs2_dir_lookup_result lookup = { NULL, };
Mark Fashehccd979b2005-12-15 14:31:24 -08002327
Joseph Qi06ee5c72015-02-16 15:59:54 -08002328 if (dio) {
2329 status = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s",
2330 OCFS2_DIO_ORPHAN_PREFIX);
2331 if (status != OCFS2_DIO_ORPHAN_PREFIX_LEN) {
2332 status = -EINVAL;
2333 mlog_errno(status);
2334 return status;
2335 }
2336
2337 status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno,
2338 name + OCFS2_DIO_ORPHAN_PREFIX_LEN);
2339 } else
2340 status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name);
Mark Fashehccd979b2005-12-15 14:31:24 -08002341 if (status < 0) {
2342 mlog_errno(status);
2343 goto leave;
2344 }
2345
Tao Ma8990e442011-02-23 22:45:26 +08002346 trace_ocfs2_orphan_del(
2347 (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno,
Joseph Qie38a5732015-04-14 15:43:22 -07002348 name, strlen(name));
Mark Fashehccd979b2005-12-15 14:31:24 -08002349
2350 /* find it's spot in the orphan directory */
Joseph Qie38a5732015-04-14 15:43:22 -07002351 status = ocfs2_find_entry(name, strlen(name), orphan_dir_inode,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002352 &lookup);
2353 if (status) {
Mark Fashehccd979b2005-12-15 14:31:24 -08002354 mlog_errno(status);
2355 goto leave;
2356 }
2357
2358 /* remove it from the orphan directory */
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002359 status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08002360 if (status < 0) {
2361 mlog_errno(status);
2362 goto leave;
2363 }
2364
Joel Becker0cf2f762009-02-12 16:41:25 -08002365 status = ocfs2_journal_access_di(handle,
2366 INODE_CACHE(orphan_dir_inode),
2367 orphan_dir_bh,
Joel Becker13723d02008-10-17 19:25:01 -07002368 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -08002369 if (status < 0) {
2370 mlog_errno(status);
2371 goto leave;
2372 }
2373
2374 /* do the i_nlink dance! :) */
2375 orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
2376 if (S_ISDIR(inode->i_mode))
Mark Fasheh198a1ca2008-11-20 17:54:57 -08002377 ocfs2_add_links_count(orphan_fe, -1);
Miklos Szeredibfe86842011-10-28 14:13:29 +02002378 set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe));
Joel Beckerec20cec2010-03-19 14:13:52 -07002379 ocfs2_journal_dirty(handle, orphan_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08002380
2381leave:
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002382 ocfs2_free_dir_lookup_result(&lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08002383
Tao Mac1e8d352011-03-07 16:43:21 +08002384 if (status)
2385 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08002386 return status;
2387}
2388
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002389/**
Lucas De Marchi25985ed2011-03-30 22:57:33 -03002390 * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to receive a newly
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002391 * allocated file. This is different from the typical 'add to orphan dir'
2392 * operation in that the inode does not yet exist. This is a problem because
2393 * the orphan dir stringifies the inode block number to come up with it's
2394 * dirent. Obviously if the inode does not yet exist we have a chicken and egg
2395 * problem. This function works around it by calling deeper into the orphan
2396 * and suballoc code than other callers. Use this only by necessity.
2397 * @dir: The directory which this inode will ultimately wind up under - not the
2398 * orphan dir!
2399 * @dir_bh: buffer_head the @dir inode block
2400 * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled
2401 * with the string to be used for orphan dirent. Pass back to the orphan dir
2402 * code.
2403 * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan
2404 * dir code.
2405 * @ret_di_blkno: block number where the new inode will be allocated.
2406 * @orphan_insert: Dir insert context to be passed back into orphan dir code.
2407 * @ret_inode_ac: Inode alloc context to be passed back to the allocator.
2408 *
2409 * Returns zero on success and the ret_orphan_dir, name and lookup
2410 * fields will be populated.
2411 *
2412 * Returns non-zero on failure.
2413 */
2414static int ocfs2_prep_new_orphaned_file(struct inode *dir,
2415 struct buffer_head *dir_bh,
2416 char *orphan_name,
2417 struct inode **ret_orphan_dir,
2418 u64 *ret_di_blkno,
2419 struct ocfs2_dir_lookup_result *orphan_insert,
2420 struct ocfs2_alloc_context **ret_inode_ac)
2421{
2422 int ret;
2423 u64 di_blkno;
2424 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
2425 struct inode *orphan_dir = NULL;
2426 struct buffer_head *orphan_dir_bh = NULL;
2427 struct ocfs2_alloc_context *inode_ac = NULL;
2428
2429 ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh);
2430 if (ret < 0) {
2431 mlog_errno(ret);
2432 return ret;
2433 }
2434
2435 /* reserve an inode spot */
2436 ret = ocfs2_reserve_new_inode(osb, &inode_ac);
2437 if (ret < 0) {
2438 if (ret != -ENOSPC)
2439 mlog_errno(ret);
2440 goto out;
2441 }
2442
2443 ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac,
2444 &di_blkno);
2445 if (ret) {
2446 mlog_errno(ret);
2447 goto out;
2448 }
2449
2450 ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh,
Joseph Qi06ee5c72015-02-16 15:59:54 -08002451 di_blkno, orphan_name, orphan_insert,
2452 false);
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002453 if (ret < 0) {
2454 mlog_errno(ret);
2455 goto out;
2456 }
2457
2458out:
2459 if (ret == 0) {
2460 *ret_orphan_dir = orphan_dir;
2461 *ret_di_blkno = di_blkno;
2462 *ret_inode_ac = inode_ac;
2463 /*
2464 * orphan_name and orphan_insert are already up to
2465 * date via prepare_orphan_dir
2466 */
2467 } else {
2468 /* Unroll reserve_new_inode* */
2469 if (inode_ac)
2470 ocfs2_free_alloc_context(inode_ac);
2471
2472 /* Unroll orphan dir locking */
2473 mutex_unlock(&orphan_dir->i_mutex);
2474 ocfs2_inode_unlock(orphan_dir, 1);
2475 iput(orphan_dir);
2476 }
2477
2478 brelse(orphan_dir_bh);
2479
Xiaowei.Hu7869e592013-06-12 14:04:41 -07002480 return ret;
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002481}
2482
Tao Mabc13d342009-08-18 11:44:14 +08002483int ocfs2_create_inode_in_orphan(struct inode *dir,
2484 int mode,
2485 struct inode **new_inode)
2486{
2487 int status, did_quota_inode = 0;
2488 struct inode *inode = NULL;
2489 struct inode *orphan_dir = NULL;
2490 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
2491 struct ocfs2_dinode *di = NULL;
2492 handle_t *handle = NULL;
2493 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
2494 struct buffer_head *parent_di_bh = NULL;
2495 struct buffer_head *new_di_bh = NULL;
2496 struct ocfs2_alloc_context *inode_ac = NULL;
2497 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002498 u64 uninitialized_var(di_blkno), suballoc_loc;
2499 u16 suballoc_bit;
Tao Mabc13d342009-08-18 11:44:14 +08002500
2501 status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
2502 if (status < 0) {
2503 if (status != -ENOENT)
2504 mlog_errno(status);
2505 return status;
2506 }
2507
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002508 status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh,
2509 orphan_name, &orphan_dir,
2510 &di_blkno, &orphan_insert, &inode_ac);
Tao Mabc13d342009-08-18 11:44:14 +08002511 if (status < 0) {
2512 if (status != -ENOSPC)
2513 mlog_errno(status);
2514 goto leave;
2515 }
2516
2517 inode = ocfs2_get_init_inode(dir, mode);
Jan Kara9c89fe02015-07-14 13:36:02 +02002518 if (IS_ERR(inode)) {
2519 status = PTR_ERR(inode);
2520 inode = NULL;
Tao Mabc13d342009-08-18 11:44:14 +08002521 mlog_errno(status);
2522 goto leave;
2523 }
2524
2525 handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0));
2526 if (IS_ERR(handle)) {
2527 status = PTR_ERR(handle);
2528 handle = NULL;
2529 mlog_errno(status);
2530 goto leave;
2531 }
2532
Christoph Hellwig63936dd2010-03-03 09:05:01 -05002533 status = dquot_alloc_inode(inode);
2534 if (status)
Tao Mabc13d342009-08-18 11:44:14 +08002535 goto leave;
Tao Mabc13d342009-08-18 11:44:14 +08002536 did_quota_inode = 1;
2537
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002538 status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac,
2539 &suballoc_loc,
2540 &suballoc_bit, di_blkno);
Tao Mabc13d342009-08-18 11:44:14 +08002541 if (status < 0) {
2542 mlog_errno(status);
2543 goto leave;
2544 }
2545
Miklos Szeredi6d6b77f2011-10-28 14:13:28 +02002546 clear_nlink(inode);
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002547 /* do the real work now. */
2548 status = __ocfs2_mknod_locked(dir, inode,
2549 0, &new_di_bh, parent_di_bh, handle,
2550 inode_ac, di_blkno, suballoc_loc,
2551 suballoc_bit);
Tao Mabc13d342009-08-18 11:44:14 +08002552 if (status < 0) {
2553 mlog_errno(status);
2554 goto leave;
2555 }
2556
2557 di = (struct ocfs2_dinode *)new_di_bh->b_data;
Tristan Ye3939fda2010-03-19 09:21:09 +08002558 status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name,
Joseph Qi06ee5c72015-02-16 15:59:54 -08002559 &orphan_insert, orphan_dir, false);
Tao Mabc13d342009-08-18 11:44:14 +08002560 if (status < 0) {
2561 mlog_errno(status);
2562 goto leave;
2563 }
2564
2565 /* get open lock so that only nodes can't remove it from orphan dir. */
2566 status = ocfs2_open_lock(inode);
2567 if (status < 0)
2568 mlog_errno(status);
2569
Tao Mac7d260a2009-12-18 10:24:54 +08002570 insert_inode_hash(inode);
Tao Mabc13d342009-08-18 11:44:14 +08002571leave:
2572 if (status < 0 && did_quota_inode)
Christoph Hellwig63936dd2010-03-03 09:05:01 -05002573 dquot_free_inode(inode);
Tao Mabc13d342009-08-18 11:44:14 +08002574 if (handle)
2575 ocfs2_commit_trans(osb, handle);
2576
2577 if (orphan_dir) {
2578 /* This was locked for us in ocfs2_prepare_orphan_dir() */
2579 ocfs2_inode_unlock(orphan_dir, 1);
2580 mutex_unlock(&orphan_dir->i_mutex);
2581 iput(orphan_dir);
2582 }
2583
Tao Mabc13d342009-08-18 11:44:14 +08002584 if ((status < 0) && inode) {
2585 clear_nlink(inode);
2586 iput(inode);
2587 }
2588
2589 if (inode_ac)
2590 ocfs2_free_alloc_context(inode_ac);
2591
2592 brelse(new_di_bh);
2593
2594 if (!status)
2595 *new_inode = inode;
2596
2597 ocfs2_free_dir_lookup_result(&orphan_insert);
2598
2599 ocfs2_inode_unlock(dir, 1);
2600 brelse(parent_di_bh);
2601 return status;
2602}
2603
Joseph Qi06ee5c72015-02-16 15:59:54 -08002604int ocfs2_add_inode_to_orphan(struct ocfs2_super *osb,
2605 struct inode *inode)
2606{
2607 char orphan_name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1];
2608 struct inode *orphan_dir_inode = NULL;
2609 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
2610 struct buffer_head *di_bh = NULL;
2611 int status = 0;
2612 handle_t *handle = NULL;
Joseph Qi48139622015-02-16 16:00:12 -08002613 struct ocfs2_dinode *di = NULL;
Joseph Qi06ee5c72015-02-16 15:59:54 -08002614
2615 status = ocfs2_inode_lock(inode, &di_bh, 1);
2616 if (status < 0) {
2617 mlog_errno(status);
2618 goto bail;
2619 }
2620
Joseph Qi48139622015-02-16 16:00:12 -08002621 di = (struct ocfs2_dinode *) di_bh->b_data;
2622 /*
2623 * Another append dio crashed?
Joseph Qi512f62a2015-09-04 15:43:37 -07002624 * If so, manually recover it first.
Joseph Qi48139622015-02-16 16:00:12 -08002625 */
2626 if (unlikely(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))) {
Joseph Qi512f62a2015-09-04 15:43:37 -07002627 status = ocfs2_truncate_file(inode, di_bh, i_size_read(inode));
2628 if (status < 0) {
2629 if (status != -ENOSPC)
2630 mlog_errno(status);
2631 goto bail_unlock_inode;
2632 }
2633
2634 status = ocfs2_del_inode_from_orphan(osb, inode, di_bh, 0, 0);
2635 if (status < 0) {
2636 mlog_errno(status);
2637 goto bail_unlock_inode;
2638 }
Joseph Qi48139622015-02-16 16:00:12 -08002639 }
2640
Joseph Qi06ee5c72015-02-16 15:59:54 -08002641 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir_inode,
2642 OCFS2_I(inode)->ip_blkno,
2643 orphan_name,
2644 &orphan_insert,
2645 true);
2646 if (status < 0) {
2647 mlog_errno(status);
2648 goto bail_unlock_inode;
2649 }
2650
2651 handle = ocfs2_start_trans(osb,
2652 OCFS2_INODE_ADD_TO_ORPHAN_CREDITS);
2653 if (IS_ERR(handle)) {
2654 status = PTR_ERR(handle);
2655 goto bail_unlock_orphan;
2656 }
2657
2658 status = ocfs2_orphan_add(osb, handle, inode, di_bh, orphan_name,
2659 &orphan_insert, orphan_dir_inode, true);
2660 if (status)
2661 mlog_errno(status);
2662
2663 ocfs2_commit_trans(osb, handle);
2664
2665bail_unlock_orphan:
2666 ocfs2_inode_unlock(orphan_dir_inode, 1);
2667 mutex_unlock(&orphan_dir_inode->i_mutex);
2668 iput(orphan_dir_inode);
2669
2670 ocfs2_free_dir_lookup_result(&orphan_insert);
2671
2672bail_unlock_inode:
2673 ocfs2_inode_unlock(inode, 1);
2674 brelse(di_bh);
2675
2676bail:
2677 return status;
2678}
2679
2680int ocfs2_del_inode_from_orphan(struct ocfs2_super *osb,
Joseph Qicf1776a2015-06-24 16:54:59 -07002681 struct inode *inode, struct buffer_head *di_bh,
2682 int update_isize, loff_t end)
Joseph Qi06ee5c72015-02-16 15:59:54 -08002683{
2684 struct inode *orphan_dir_inode = NULL;
2685 struct buffer_head *orphan_dir_bh = NULL;
Joseph Qicf1776a2015-06-24 16:54:59 -07002686 struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
Joseph Qi06ee5c72015-02-16 15:59:54 -08002687 handle_t *handle = NULL;
2688 int status = 0;
2689
Joseph Qi06ee5c72015-02-16 15:59:54 -08002690 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
2691 ORPHAN_DIR_SYSTEM_INODE,
2692 le16_to_cpu(di->i_dio_orphaned_slot));
2693 if (!orphan_dir_inode) {
2694 status = -ENOENT;
2695 mlog_errno(status);
Joseph Qicf1776a2015-06-24 16:54:59 -07002696 goto bail;
Joseph Qi06ee5c72015-02-16 15:59:54 -08002697 }
2698
2699 mutex_lock(&orphan_dir_inode->i_mutex);
2700 status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
2701 if (status < 0) {
2702 mutex_unlock(&orphan_dir_inode->i_mutex);
2703 iput(orphan_dir_inode);
2704 mlog_errno(status);
Joseph Qicf1776a2015-06-24 16:54:59 -07002705 goto bail;
Joseph Qi06ee5c72015-02-16 15:59:54 -08002706 }
2707
2708 handle = ocfs2_start_trans(osb,
2709 OCFS2_INODE_DEL_FROM_ORPHAN_CREDITS);
2710 if (IS_ERR(handle)) {
2711 status = PTR_ERR(handle);
2712 goto bail_unlock_orphan;
2713 }
2714
2715 BUG_ON(!(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL)));
2716
2717 status = ocfs2_orphan_del(osb, handle, orphan_dir_inode,
2718 inode, orphan_dir_bh, true);
2719 if (status < 0) {
2720 mlog_errno(status);
2721 goto bail_commit;
2722 }
2723
2724 status = ocfs2_journal_access_di(handle,
2725 INODE_CACHE(inode),
2726 di_bh,
2727 OCFS2_JOURNAL_ACCESS_WRITE);
2728 if (status < 0) {
2729 mlog_errno(status);
2730 goto bail_commit;
2731 }
2732
2733 di->i_flags &= ~cpu_to_le32(OCFS2_DIO_ORPHANED_FL);
2734 di->i_dio_orphaned_slot = 0;
2735
2736 if (update_isize) {
2737 status = ocfs2_set_inode_size(handle, inode, di_bh, end);
2738 if (status)
2739 mlog_errno(status);
2740 } else
2741 ocfs2_journal_dirty(handle, di_bh);
2742
2743bail_commit:
2744 ocfs2_commit_trans(osb, handle);
2745
2746bail_unlock_orphan:
2747 ocfs2_inode_unlock(orphan_dir_inode, 1);
2748 mutex_unlock(&orphan_dir_inode->i_mutex);
2749 brelse(orphan_dir_bh);
2750 iput(orphan_dir_inode);
2751
Joseph Qi06ee5c72015-02-16 15:59:54 -08002752bail:
2753 return status;
2754}
2755
Tao Mabc13d342009-08-18 11:44:14 +08002756int ocfs2_mv_orphaned_inode_to_new(struct inode *dir,
2757 struct inode *inode,
2758 struct dentry *dentry)
2759{
2760 int status = 0;
2761 struct buffer_head *parent_di_bh = NULL;
2762 handle_t *handle = NULL;
2763 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
2764 struct ocfs2_dinode *dir_di, *di;
2765 struct inode *orphan_dir_inode = NULL;
2766 struct buffer_head *orphan_dir_bh = NULL;
2767 struct buffer_head *di_bh = NULL;
2768 struct ocfs2_dir_lookup_result lookup = { NULL, };
2769
Tao Ma8990e442011-02-23 22:45:26 +08002770 trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry,
2771 dentry->d_name.len, dentry->d_name.name,
2772 (unsigned long long)OCFS2_I(dir)->ip_blkno,
2773 (unsigned long long)OCFS2_I(inode)->ip_blkno);
Tao Mabc13d342009-08-18 11:44:14 +08002774
2775 status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
2776 if (status < 0) {
2777 if (status != -ENOENT)
2778 mlog_errno(status);
2779 return status;
2780 }
2781
2782 dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data;
2783 if (!dir_di->i_links_count) {
2784 /* can't make a file in a deleted directory. */
2785 status = -ENOENT;
2786 goto leave;
2787 }
2788
2789 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
2790 dentry->d_name.len);
2791 if (status)
2792 goto leave;
2793
2794 /* get a spot inside the dir. */
2795 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh,
2796 dentry->d_name.name,
2797 dentry->d_name.len, &lookup);
2798 if (status < 0) {
2799 mlog_errno(status);
2800 goto leave;
2801 }
2802
2803 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
2804 ORPHAN_DIR_SYSTEM_INODE,
2805 osb->slot_num);
2806 if (!orphan_dir_inode) {
Joseph Qi62f8b1f2015-04-14 15:43:24 -07002807 status = -ENOENT;
Tao Mabc13d342009-08-18 11:44:14 +08002808 mlog_errno(status);
2809 goto leave;
2810 }
2811
2812 mutex_lock(&orphan_dir_inode->i_mutex);
2813
2814 status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
2815 if (status < 0) {
2816 mlog_errno(status);
2817 mutex_unlock(&orphan_dir_inode->i_mutex);
2818 iput(orphan_dir_inode);
2819 goto leave;
2820 }
2821
2822 status = ocfs2_read_inode_block(inode, &di_bh);
2823 if (status < 0) {
2824 mlog_errno(status);
2825 goto orphan_unlock;
2826 }
2827
2828 handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb));
2829 if (IS_ERR(handle)) {
2830 status = PTR_ERR(handle);
2831 handle = NULL;
2832 mlog_errno(status);
2833 goto orphan_unlock;
2834 }
2835
2836 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
2837 di_bh, OCFS2_JOURNAL_ACCESS_WRITE);
2838 if (status < 0) {
2839 mlog_errno(status);
2840 goto out_commit;
2841 }
2842
2843 status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode,
Joseph Qi06ee5c72015-02-16 15:59:54 -08002844 orphan_dir_bh, false);
Tao Mabc13d342009-08-18 11:44:14 +08002845 if (status < 0) {
2846 mlog_errno(status);
2847 goto out_commit;
2848 }
2849
2850 di = (struct ocfs2_dinode *)di_bh->b_data;
Joseph Qi13eb9882013-07-03 15:00:48 -07002851 di->i_flags &= ~cpu_to_le32(OCFS2_ORPHANED_FL);
Tao Mabc13d342009-08-18 11:44:14 +08002852 di->i_orphaned_slot = 0;
Miklos Szeredibfe86842011-10-28 14:13:29 +02002853 set_nlink(inode, 1);
Tao Ma10cf1a02009-12-18 10:24:55 +08002854 ocfs2_set_links_count(di, inode->i_nlink);
Darrick J. Wong6fdb7022014-04-03 14:47:08 -07002855 ocfs2_update_inode_fsync_trans(handle, inode, 1);
Tao Mabc13d342009-08-18 11:44:14 +08002856 ocfs2_journal_dirty(handle, di_bh);
2857
2858 status = ocfs2_add_entry(handle, dentry, inode,
2859 OCFS2_I(inode)->ip_blkno, parent_di_bh,
2860 &lookup);
2861 if (status < 0) {
2862 mlog_errno(status);
2863 goto out_commit;
2864 }
2865
2866 status = ocfs2_dentry_attach_lock(dentry, inode,
2867 OCFS2_I(dir)->ip_blkno);
2868 if (status) {
2869 mlog_errno(status);
2870 goto out_commit;
2871 }
2872
Tao Mabc13d342009-08-18 11:44:14 +08002873 d_instantiate(dentry, inode);
2874 status = 0;
2875out_commit:
2876 ocfs2_commit_trans(osb, handle);
2877orphan_unlock:
2878 ocfs2_inode_unlock(orphan_dir_inode, 1);
2879 mutex_unlock(&orphan_dir_inode->i_mutex);
2880 iput(orphan_dir_inode);
2881leave:
2882
2883 ocfs2_inode_unlock(dir, 1);
2884
2885 brelse(di_bh);
2886 brelse(parent_di_bh);
2887 brelse(orphan_dir_bh);
2888
2889 ocfs2_free_dir_lookup_result(&lookup);
2890
Tao Mac1e8d352011-03-07 16:43:21 +08002891 if (status)
2892 mlog_errno(status);
Tao Mabc13d342009-08-18 11:44:14 +08002893
2894 return status;
2895}
2896
Arjan van de Ven92e1d5b2007-02-12 00:55:39 -08002897const struct inode_operations ocfs2_dir_iops = {
Mark Fashehccd979b2005-12-15 14:31:24 -08002898 .create = ocfs2_create,
2899 .lookup = ocfs2_lookup,
2900 .link = ocfs2_link,
2901 .unlink = ocfs2_unlink,
2902 .rmdir = ocfs2_unlink,
2903 .symlink = ocfs2_symlink,
2904 .mkdir = ocfs2_mkdir,
2905 .mknod = ocfs2_mknod,
2906 .rename = ocfs2_rename,
2907 .setattr = ocfs2_setattr,
2908 .getattr = ocfs2_getattr,
Tiger Yangd38eb8d2006-11-27 09:59:21 +08002909 .permission = ocfs2_permission,
Tiger Yangcf1d6c72008-08-18 17:11:00 +08002910 .setxattr = generic_setxattr,
2911 .getxattr = generic_getxattr,
2912 .listxattr = ocfs2_listxattr,
2913 .removexattr = generic_removexattr,
Tristan Ye55f49462009-12-17 18:42:16 +08002914 .fiemap = ocfs2_fiemap,
Christoph Hellwig4e34e712011-07-23 17:37:31 +02002915 .get_acl = ocfs2_iop_get_acl,
Christoph Hellwig702e5bc2013-12-20 05:16:48 -08002916 .set_acl = ocfs2_iop_set_acl,
Mark Fashehccd979b2005-12-15 14:31:24 -08002917};