blob: 8ea51cf27b9707a25468fdf7a96029f666d52197 [file] [log] [blame]
Thomas Gleixner328970d2019-05-24 12:04:05 +02001// SPDX-License-Identifier: GPL-2.0-or-later
Mark Fashehccd979b2005-12-15 14:31:24 -08002/* -*- mode: c; c-basic-offset: 8; -*-
3 * vim: noexpandtab sw=8 ts=8 sts=0:
4 *
5 * namei.c
6 *
7 * Create and rename file, directory, symlinks
8 *
9 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
10 *
11 * Portions of this code from linux/fs/ext3/dir.c
12 *
13 * Copyright (C) 1992, 1993, 1994, 1995
14 * Remy Card (card@masi.ibp.fr)
15 * Laboratoire MASI - Institut Blaise pascal
16 * Universite Pierre et Marie Curie (Paris VI)
17 *
18 * from
19 *
20 * linux/fs/minix/dir.c
21 *
22 * Copyright (C) 1991, 1992 Linux Torvalds
Mark Fashehccd979b2005-12-15 14:31:24 -080023 */
24
25#include <linux/fs.h>
26#include <linux/types.h>
27#include <linux/slab.h>
28#include <linux/highmem.h>
Jan Karaa90714c2008-10-09 19:38:40 +020029#include <linux/quotaops.h>
Jeff Laytoncc56c332017-12-11 06:35:17 -050030#include <linux/iversion.h>
Mark Fashehccd979b2005-12-15 14:31:24 -080031
Mark Fashehccd979b2005-12-15 14:31:24 -080032#include <cluster/masklog.h>
33
34#include "ocfs2.h"
35
36#include "alloc.h"
37#include "dcache.h"
38#include "dir.h"
39#include "dlmglue.h"
40#include "extent_map.h"
41#include "file.h"
42#include "inode.h"
43#include "journal.h"
44#include "namei.h"
45#include "suballoc.h"
Mark Fashehaa958872006-04-21 13:49:02 -070046#include "super.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080047#include "symlink.h"
48#include "sysfile.h"
49#include "uptodate.h"
Tiger Yangcf1d6c72008-08-18 17:11:00 +080050#include "xattr.h"
Tiger Yang89c38bd2008-11-14 11:17:41 +080051#include "acl.h"
Tao Ma8990e442011-02-23 22:45:26 +080052#include "ocfs2_trace.h"
Mark Fashehccd979b2005-12-15 14:31:24 -080053
54#include "buffer_head_io.h"
55
Mark Fashehccd979b2005-12-15 14:31:24 -080056static int ocfs2_mknod_locked(struct ocfs2_super *osb,
57 struct inode *dir,
Tiger Yangf5d36202008-11-14 11:15:44 +080058 struct inode *inode,
Mark Fashehccd979b2005-12-15 14:31:24 -080059 dev_t dev,
60 struct buffer_head **new_fe_bh,
61 struct buffer_head *parent_fe_bh,
Mark Fasheh1fabe142006-10-09 18:11:45 -070062 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -080063 struct ocfs2_alloc_context *inode_ac);
64
Mark Fashehccd979b2005-12-15 14:31:24 -080065static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
Mark Fasheh5098c272006-10-05 18:12:57 -070066 struct inode **ret_orphan_dir,
Tao Ma19bd3412009-08-18 11:44:10 +080067 u64 blkno,
Mark Fashehccd979b2005-12-15 14:31:24 -080068 char *name,
Joseph Qi06ee5c72015-02-16 15:59:54 -080069 struct ocfs2_dir_lookup_result *lookup,
70 bool dio);
Mark Fashehccd979b2005-12-15 14:31:24 -080071
72static int ocfs2_orphan_add(struct ocfs2_super *osb,
Mark Fasheh1fabe142006-10-09 18:11:45 -070073 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -080074 struct inode *inode,
Tristan Ye3939fda2010-03-19 09:21:09 +080075 struct buffer_head *fe_bh,
Mark Fashehccd979b2005-12-15 14:31:24 -080076 char *name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -080077 struct ocfs2_dir_lookup_result *lookup,
Joseph Qi06ee5c72015-02-16 15:59:54 -080078 struct inode *orphan_dir_inode,
79 bool dio);
Mark Fashehccd979b2005-12-15 14:31:24 -080080
81static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
Mark Fasheh1fabe142006-10-09 18:11:45 -070082 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -080083 struct inode *inode,
84 const char *symname);
85
Xue jiufei53dc20b2015-01-08 14:32:23 -080086static int ocfs2_double_lock(struct ocfs2_super *osb,
87 struct buffer_head **bh1,
88 struct inode *inode1,
89 struct buffer_head **bh2,
90 struct inode *inode2,
91 int rename);
92
93static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2);
Mark Fashehccd979b2005-12-15 14:31:24 -080094/* An orphan dir name is an 8 byte value, printed as a hex string */
95#define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64)))
96
97static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry,
Al Viro00cd8dd2012-06-10 17:13:09 -040098 unsigned int flags)
Mark Fashehccd979b2005-12-15 14:31:24 -080099{
100 int status;
101 u64 blkno;
Mark Fashehccd979b2005-12-15 14:31:24 -0800102 struct inode *inode = NULL;
103 struct dentry *ret;
Mark Fashehccd979b2005-12-15 14:31:24 -0800104 struct ocfs2_inode_info *oi;
105
Tao Ma8990e442011-02-23 22:45:26 +0800106 trace_ocfs2_lookup(dir, dentry, dentry->d_name.len,
107 dentry->d_name.name,
108 (unsigned long long)OCFS2_I(dir)->ip_blkno, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800109
110 if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) {
111 ret = ERR_PTR(-ENAMETOOLONG);
112 goto bail;
113 }
114
Jan Karacb257972009-06-04 15:26:50 +0200115 status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT);
Mark Fashehccd979b2005-12-15 14:31:24 -0800116 if (status < 0) {
117 if (status != -ENOENT)
118 mlog_errno(status);
119 ret = ERR_PTR(status);
120 goto bail;
121 }
122
Mark Fashehbe94d112007-09-11 15:22:06 -0700123 status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name,
124 dentry->d_name.len, &blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800125 if (status < 0)
126 goto bail_add;
127
Jan Kara5fa06132008-01-11 00:11:45 +0100128 inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800129 if (IS_ERR(inode)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800130 ret = ERR_PTR(-EACCES);
131 goto bail_unlock;
132 }
133
134 oi = OCFS2_I(inode);
135 /* Clear any orphaned state... If we were able to look up the
136 * inode from a directory, it certainly can't be orphaned. We
137 * might have the bad state from a node which intended to
138 * orphan this inode but crashed before it could commit the
139 * unlink. */
140 spin_lock(&oi->ip_lock);
141 oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED;
Mark Fashehccd979b2005-12-15 14:31:24 -0800142 spin_unlock(&oi->ip_lock);
143
144bail_add:
Mark Fashehccd979b2005-12-15 14:31:24 -0800145 ret = d_splice_alias(inode, dentry);
146
Mark Fasheh379dfe92006-09-08 14:21:03 -0700147 if (inode) {
148 /*
149 * If d_splice_alias() finds a DCACHE_DISCONNECTED
150 * dentry, it will d_move() it on top of ourse. The
151 * return value will indicate this however, so in
152 * those cases, we switch them around for the locking
153 * code.
154 *
155 * NOTE: This dentry already has ->d_op set from
156 * ocfs2_get_parent() and ocfs2_get_dentry()
157 */
Richard Weinbergerd3556ba2014-10-29 14:50:53 -0700158 if (!IS_ERR_OR_NULL(ret))
Mark Fasheh379dfe92006-09-08 14:21:03 -0700159 dentry = ret;
160
161 status = ocfs2_dentry_attach_lock(dentry, inode,
Mark Fasheh0027dd52006-09-21 16:51:28 -0700162 OCFS2_I(dir)->ip_blkno);
Mark Fasheh379dfe92006-09-08 14:21:03 -0700163 if (status) {
164 mlog_errno(status);
165 ret = ERR_PTR(status);
166 goto bail_unlock;
167 }
Goldwyn Rodrigues5e98d492010-06-28 10:04:32 -0500168 } else
169 ocfs2_dentry_attach_gen(dentry);
Mark Fasheh379dfe92006-09-08 14:21:03 -0700170
Mark Fashehccd979b2005-12-15 14:31:24 -0800171bail_unlock:
172 /* Don't drop the cluster lock until *after* the d_add --
173 * unlink on another node will message us to remove that
174 * dentry under this lock so otherwise we can race this with
Mark Fasheh34d024f2007-09-24 15:56:19 -0700175 * the downconvert thread and have a stale dentry. */
Mark Fashehe63aecb62007-10-18 15:30:42 -0700176 ocfs2_inode_unlock(dir, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800177
178bail:
Mark Fashehccd979b2005-12-15 14:31:24 -0800179
Tao Ma8990e442011-02-23 22:45:26 +0800180 trace_ocfs2_lookup_ret(ret);
Mark Fashehccd979b2005-12-15 14:31:24 -0800181
182 return ret;
183}
184
Al Viro67697cb2011-07-26 02:55:32 -0400185static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode)
Tiger Yangf5d36202008-11-14 11:15:44 +0800186{
187 struct inode *inode;
Jan Kara9c89fe02015-07-14 13:36:02 +0200188 int status;
Tiger Yangf5d36202008-11-14 11:15:44 +0800189
190 inode = new_inode(dir->i_sb);
191 if (!inode) {
192 mlog(ML_ERROR, "new_inode failed!\n");
Jan Kara9c89fe02015-07-14 13:36:02 +0200193 return ERR_PTR(-ENOMEM);
Tiger Yangf5d36202008-11-14 11:15:44 +0800194 }
195
196 /* populate as many fields early on as possible - many of
197 * these are used by the support functions here and in
198 * callers. */
199 if (S_ISDIR(mode))
Miklos Szeredibfe86842011-10-28 14:13:29 +0200200 set_nlink(inode, 2);
Dmitry Monakhov75fe0a22010-03-04 17:32:16 +0300201 inode_init_owner(inode, dir, mode);
Jan Kara9c89fe02015-07-14 13:36:02 +0200202 status = dquot_initialize(inode);
203 if (status)
204 return ERR_PTR(status);
205
Tiger Yangf5d36202008-11-14 11:15:44 +0800206 return inode;
207}
208
jiangyiwen595297a2014-06-23 13:22:09 -0700209static void ocfs2_cleanup_add_entry_failure(struct ocfs2_super *osb,
210 struct dentry *dentry, struct inode *inode)
211{
212 struct ocfs2_dentry_lock *dl = dentry->d_fsdata;
213
214 ocfs2_simple_drop_lockres(osb, &dl->dl_lockres);
215 ocfs2_lock_res_free(&dl->dl_lockres);
216 BUG_ON(dl->dl_count != 1);
217 spin_lock(&dentry_attach_lock);
218 dentry->d_fsdata = NULL;
219 spin_unlock(&dentry_attach_lock);
220 kfree(dl);
221 iput(inode);
222}
223
Mark Fashehccd979b2005-12-15 14:31:24 -0800224static int ocfs2_mknod(struct inode *dir,
225 struct dentry *dentry,
Al Viro1a67aaf2011-07-26 01:52:52 -0400226 umode_t mode,
Mark Fashehccd979b2005-12-15 14:31:24 -0800227 dev_t dev)
228{
229 int status = 0;
230 struct buffer_head *parent_fe_bh = NULL;
Mark Fasheh1fabe142006-10-09 18:11:45 -0700231 handle_t *handle = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800232 struct ocfs2_super *osb;
233 struct ocfs2_dinode *dirfe;
234 struct buffer_head *new_fe_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800235 struct inode *inode = NULL;
236 struct ocfs2_alloc_context *inode_ac = NULL;
237 struct ocfs2_alloc_context *data_ac = NULL;
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800238 struct ocfs2_alloc_context *meta_ac = NULL;
Tiger Yang534eadd2008-11-14 11:16:41 +0800239 int want_clusters = 0;
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800240 int want_meta = 0;
Tiger Yang534eadd2008-11-14 11:16:41 +0800241 int xattr_credits = 0;
242 struct ocfs2_security_xattr_info si = {
243 .enable = 1,
244 };
Jan Karaa90714c2008-10-09 19:38:40 +0200245 int did_quota_inode = 0;
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800246 struct ocfs2_dir_lookup_result lookup = { NULL, };
Joel Becker547ba7c2010-05-10 11:56:52 -0700247 sigset_t oldset;
248 int did_block_signals = 0;
jiangyiwen595297a2014-06-23 13:22:09 -0700249 struct ocfs2_dentry_lock *dl = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800250
Tao Ma8990e442011-02-23 22:45:26 +0800251 trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name,
252 (unsigned long long)OCFS2_I(dir)->ip_blkno,
253 (unsigned long)dev, mode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800254
Jan Kara9c89fe02015-07-14 13:36:02 +0200255 status = dquot_initialize(dir);
256 if (status) {
257 mlog_errno(status);
258 return status;
259 }
Christoph Hellwig907f4552010-03-03 09:05:06 -0500260
Mark Fashehccd979b2005-12-15 14:31:24 -0800261 /* get our super block */
262 osb = OCFS2_SB(dir->i_sb);
263
Mark Fashehe63aecb62007-10-18 15:30:42 -0700264 status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
Mark Fashehe3a82132006-10-05 16:04:17 -0700265 if (status < 0) {
266 if (status != -ENOENT)
267 mlog_errno(status);
268 return status;
269 }
270
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800271 if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) {
Mark Fasheha663e302006-08-09 11:45:07 -0700272 status = -EMLINK;
273 goto leave;
274 }
275
Mark Fashehccd979b2005-12-15 14:31:24 -0800276 dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800277 if (!ocfs2_read_links_count(dirfe)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800278 /* can't make a file in a deleted directory. */
279 status = -ENOENT;
280 goto leave;
281 }
282
283 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
284 dentry->d_name.len);
285 if (status)
286 goto leave;
287
288 /* get a spot inside the dir. */
289 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
290 dentry->d_name.name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800291 dentry->d_name.len, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800292 if (status < 0) {
293 mlog_errno(status);
294 goto leave;
295 }
296
297 /* reserve an inode spot */
Mark Fashehda5cbf22006-10-06 18:34:35 -0700298 status = ocfs2_reserve_new_inode(osb, &inode_ac);
Mark Fashehccd979b2005-12-15 14:31:24 -0800299 if (status < 0) {
300 if (status != -ENOSPC)
301 mlog_errno(status);
302 goto leave;
303 }
304
Tiger Yangf5d36202008-11-14 11:15:44 +0800305 inode = ocfs2_get_init_inode(dir, mode);
Jan Kara9c89fe02015-07-14 13:36:02 +0200306 if (IS_ERR(inode)) {
307 status = PTR_ERR(inode);
308 inode = NULL;
Tiger Yangf5d36202008-11-14 11:15:44 +0800309 mlog_errno(status);
310 goto leave;
311 }
312
Tiger Yang534eadd2008-11-14 11:16:41 +0800313 /* get security xattr */
Eric Paris2a7dba32011-02-01 11:05:39 -0500314 status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si);
Tiger Yang534eadd2008-11-14 11:16:41 +0800315 if (status) {
316 if (status == -EOPNOTSUPP)
317 si.enable = 0;
318 else {
319 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -0800320 goto leave;
321 }
322 }
323
Tiger Yang89c38bd2008-11-14 11:17:41 +0800324 /* calculate meta data/clusters for setting security and acl xattr */
325 status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800326 &si, &want_clusters,
327 &xattr_credits, &want_meta);
Tiger Yang89c38bd2008-11-14 11:17:41 +0800328 if (status < 0) {
329 mlog_errno(status);
330 goto leave;
Tiger Yang534eadd2008-11-14 11:16:41 +0800331 }
332
333 /* Reserve a cluster if creating an extent based directory. */
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800334 if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) {
Tiger Yang534eadd2008-11-14 11:16:41 +0800335 want_clusters += 1;
336
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800337 /* Dir indexing requires extra space as well */
Mark Fasheh4ed8a6b2008-11-24 17:02:08 -0800338 if (ocfs2_supports_indexed_dirs(osb))
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800339 want_meta++;
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800340 }
341
342 status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac);
343 if (status < 0) {
344 if (status != -ENOSPC)
345 mlog_errno(status);
346 goto leave;
347 }
348
Tiger Yang534eadd2008-11-14 11:16:41 +0800349 status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
350 if (status < 0) {
351 if (status != -ENOSPC)
352 mlog_errno(status);
353 goto leave;
354 }
355
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800356 handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb,
357 S_ISDIR(mode),
358 xattr_credits));
Mark Fashehccd979b2005-12-15 14:31:24 -0800359 if (IS_ERR(handle)) {
360 status = PTR_ERR(handle);
361 handle = NULL;
362 mlog_errno(status);
363 goto leave;
364 }
365
Joel Becker547ba7c2010-05-10 11:56:52 -0700366 /* Starting to change things, restart is no longer possible. */
367 ocfs2_block_signals(&oldset);
368 did_block_signals = 1;
369
Christoph Hellwig63936dd2010-03-03 09:05:01 -0500370 status = dquot_alloc_inode(inode);
371 if (status)
Jan Karaa90714c2008-10-09 19:38:40 +0200372 goto leave;
Jan Karaa90714c2008-10-09 19:38:40 +0200373 did_quota_inode = 1;
374
Mark Fashehccd979b2005-12-15 14:31:24 -0800375 /* do the real work now. */
Tao Ma19bd3412009-08-18 11:44:10 +0800376 status = ocfs2_mknod_locked(osb, dir, inode, dev,
Mark Fashehccd979b2005-12-15 14:31:24 -0800377 &new_fe_bh, parent_fe_bh, handle,
Tiger Yangf5d36202008-11-14 11:15:44 +0800378 inode_ac);
Mark Fashehccd979b2005-12-15 14:31:24 -0800379 if (status < 0) {
380 mlog_errno(status);
381 goto leave;
382 }
383
384 if (S_ISDIR(mode)) {
385 status = ocfs2_fill_new_dir(osb, handle, dir, inode,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800386 new_fe_bh, data_ac, meta_ac);
Mark Fashehccd979b2005-12-15 14:31:24 -0800387 if (status < 0) {
388 mlog_errno(status);
389 goto leave;
390 }
391
Joel Becker0cf2f762009-02-12 16:41:25 -0800392 status = ocfs2_journal_access_di(handle, INODE_CACHE(dir),
393 parent_fe_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700394 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800395 if (status < 0) {
396 mlog_errno(status);
397 goto leave;
398 }
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800399 ocfs2_add_links_count(dirfe, 1);
Joel Beckerec20cec2010-03-19 14:13:52 -0700400 ocfs2_journal_dirty(handle, parent_fe_bh);
Dave Hansend8c76e62006-09-30 23:29:04 -0700401 inc_nlink(dir);
Mark Fashehccd979b2005-12-15 14:31:24 -0800402 }
403
Junxiao Bic25a1e02016-05-12 15:42:18 -0700404 status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh,
405 meta_ac, data_ac);
Christoph Hellwig702e5bc2013-12-20 05:16:48 -0800406
Tiger Yang89c38bd2008-11-14 11:17:41 +0800407 if (status < 0) {
408 mlog_errno(status);
409 goto leave;
410 }
411
Tiger Yang534eadd2008-11-14 11:16:41 +0800412 if (si.enable) {
413 status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800414 meta_ac, data_ac);
Tiger Yang534eadd2008-11-14 11:16:41 +0800415 if (status < 0) {
416 mlog_errno(status);
417 goto leave;
418 }
419 }
420
Mark Fasheha9743fc2010-04-23 11:42:22 -0700421 /*
422 * Do this before adding the entry to the directory. We add
423 * also set d_op after success so that ->d_iput() will cleanup
424 * the dentry lock even if ocfs2_add_entry() fails below.
425 */
426 status = ocfs2_dentry_attach_lock(dentry, inode,
427 OCFS2_I(dir)->ip_blkno);
428 if (status) {
429 mlog_errno(status);
430 goto leave;
431 }
Mark Fasheha9743fc2010-04-23 11:42:22 -0700432
jiangyiwen595297a2014-06-23 13:22:09 -0700433 dl = dentry->d_fsdata;
434
Mark Fashehccd979b2005-12-15 14:31:24 -0800435 status = ocfs2_add_entry(handle, dentry, inode,
436 OCFS2_I(inode)->ip_blkno, parent_fe_bh,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800437 &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800438 if (status < 0) {
439 mlog_errno(status);
440 goto leave;
441 }
442
443 insert_inode_hash(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800444 d_instantiate(dentry, inode);
445 status = 0;
446leave:
Jan Karaa90714c2008-10-09 19:38:40 +0200447 if (status < 0 && did_quota_inode)
Christoph Hellwig63936dd2010-03-03 09:05:01 -0500448 dquot_free_inode(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800449 if (handle)
Mark Fasheh02dc1af2006-10-09 16:48:10 -0700450 ocfs2_commit_trans(osb, handle);
Mark Fashehccd979b2005-12-15 14:31:24 -0800451
Mark Fashehe63aecb62007-10-18 15:30:42 -0700452 ocfs2_inode_unlock(dir, 1);
Joel Becker547ba7c2010-05-10 11:56:52 -0700453 if (did_block_signals)
454 ocfs2_unblock_signals(&oldset);
Mark Fashehe3a82132006-10-05 16:04:17 -0700455
Mark Fasheha81cb882008-10-07 14:25:16 -0700456 brelse(new_fe_bh);
Mark Fasheha81cb882008-10-07 14:25:16 -0700457 brelse(parent_fe_bh);
Tiger Yang534eadd2008-11-14 11:16:41 +0800458 kfree(si.value);
Mark Fashehccd979b2005-12-15 14:31:24 -0800459
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800460 ocfs2_free_dir_lookup_result(&lookup);
461
Mark Fashehccd979b2005-12-15 14:31:24 -0800462 if (inode_ac)
463 ocfs2_free_alloc_context(inode_ac);
464
465 if (data_ac)
466 ocfs2_free_alloc_context(data_ac);
467
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800468 if (meta_ac)
469 ocfs2_free_alloc_context(meta_ac);
Tiger Yang534eadd2008-11-14 11:16:41 +0800470
Li Dongyang062d3402010-04-22 16:11:29 +0800471 /*
472 * We should call iput after the i_mutex of the bitmap been
473 * unlocked in ocfs2_free_alloc_context, or the
474 * ocfs2_delete_inode will mutex_lock again.
475 */
476 if ((status < 0) && inode) {
jiangyiwen595297a2014-06-23 13:22:09 -0700477 if (dl)
478 ocfs2_cleanup_add_entry_failure(osb, dentry, inode);
479
Li Dongyang062d3402010-04-22 16:11:29 +0800480 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR;
481 clear_nlink(inode);
482 iput(inode);
483 }
484
Tao Mac1e8d352011-03-07 16:43:21 +0800485 if (status)
486 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -0800487
488 return status;
489}
490
Mark Fasheh021960c2010-08-13 15:15:15 -0700491static int __ocfs2_mknod_locked(struct inode *dir,
492 struct inode *inode,
493 dev_t dev,
494 struct buffer_head **new_fe_bh,
495 struct buffer_head *parent_fe_bh,
496 handle_t *handle,
497 struct ocfs2_alloc_context *inode_ac,
498 u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit)
Mark Fashehccd979b2005-12-15 14:31:24 -0800499{
500 int status = 0;
Mark Fasheh021960c2010-08-13 15:15:15 -0700501 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
Mark Fashehccd979b2005-12-15 14:31:24 -0800502 struct ocfs2_dinode *fe = NULL;
503 struct ocfs2_extent_list *fel;
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800504 u16 feat;
Darrick J. Wong2931cdc2014-04-03 14:46:48 -0700505 struct ocfs2_inode_info *oi = OCFS2_I(inode);
Deepa Dinamanic62c38f2016-12-12 16:41:26 -0800506 struct timespec64 ts;
Mark Fashehccd979b2005-12-15 14:31:24 -0800507
Mark Fashehccd979b2005-12-15 14:31:24 -0800508 *new_fe_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800509
Mark Fashehccd979b2005-12-15 14:31:24 -0800510 /* populate as many fields early on as possible - many of
511 * these are used by the support functions here and in
512 * callers. */
513 inode->i_ino = ino_from_blkno(osb->sb, fe_blkno);
piaojund324cd42018-04-05 16:18:37 -0700514 oi->ip_blkno = fe_blkno;
Mark Fashehccd979b2005-12-15 14:31:24 -0800515 spin_lock(&osb->osb_lock);
516 inode->i_generation = osb->s_next_generation++;
517 spin_unlock(&osb->osb_lock);
518
519 *new_fe_bh = sb_getblk(osb->sb, fe_blkno);
520 if (!*new_fe_bh) {
Rui Xiang7391a292013-11-12 15:06:54 -0800521 status = -ENOMEM;
Mark Fashehccd979b2005-12-15 14:31:24 -0800522 mlog_errno(status);
523 goto leave;
524 }
Joel Becker8cb471e2009-02-10 20:00:41 -0800525 ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800526
Joel Becker0cf2f762009-02-12 16:41:25 -0800527 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
528 *new_fe_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700529 OCFS2_JOURNAL_ACCESS_CREATE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800530 if (status < 0) {
531 mlog_errno(status);
532 goto leave;
533 }
534
535 fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data;
536 memset(fe, 0, osb->sb->s_blocksize);
537
538 fe->i_generation = cpu_to_le32(inode->i_generation);
539 fe->i_fs_generation = cpu_to_le32(osb->fs_generation);
540 fe->i_blkno = cpu_to_le64(fe_blkno);
Joel Becker2b6cb572010-03-26 10:09:15 +0800541 fe->i_suballoc_loc = cpu_to_le64(suballoc_loc);
Mark Fashehccd979b2005-12-15 14:31:24 -0800542 fe->i_suballoc_bit = cpu_to_le16(suballoc_bit);
Tao Ma4d0ddb22008-03-05 16:11:46 +0800543 fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot);
Eric W. Biederman2c034172013-01-31 17:27:11 -0800544 fe->i_uid = cpu_to_le32(i_uid_read(inode));
545 fe->i_gid = cpu_to_le32(i_gid_read(inode));
Tiger Yangf5d36202008-11-14 11:15:44 +0800546 fe->i_mode = cpu_to_le16(inode->i_mode);
547 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
Mark Fashehccd979b2005-12-15 14:31:24 -0800548 fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev));
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800549
550 ocfs2_set_links_count(fe, inode->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -0800551
552 fe->i_last_eb_blk = 0;
553 strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE);
Joseph Qi13eb9882013-07-03 15:00:48 -0700554 fe->i_flags |= cpu_to_le32(OCFS2_VALID_FL);
Deepa Dinamanic62c38f2016-12-12 16:41:26 -0800555 ktime_get_real_ts64(&ts);
Mark Fashehccd979b2005-12-15 14:31:24 -0800556 fe->i_atime = fe->i_ctime = fe->i_mtime =
Deepa Dinamanic62c38f2016-12-12 16:41:26 -0800557 cpu_to_le64(ts.tv_sec);
Mark Fashehccd979b2005-12-15 14:31:24 -0800558 fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec =
Deepa Dinamanic62c38f2016-12-12 16:41:26 -0800559 cpu_to_le32(ts.tv_nsec);
Mark Fashehccd979b2005-12-15 14:31:24 -0800560 fe->i_dtime = 0;
561
Mark Fasheh5b6a3a22007-09-13 16:33:54 -0700562 /*
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800563 * If supported, directories start with inline data. If inline
564 * isn't supported, but indexing is, we start them as indexed.
Mark Fasheh5b6a3a22007-09-13 16:33:54 -0700565 */
Mark Fasheh9b7895e2008-11-12 16:27:44 -0800566 feat = le16_to_cpu(fe->i_dyn_features);
Tiger Yangf5d36202008-11-14 11:15:44 +0800567 if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) {
Mark Fasheh5b6a3a22007-09-13 16:33:54 -0700568 fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL);
569
Tiger Yangd9ae49d2009-03-05 11:06:15 +0800570 fe->id2.i_data.id_count = cpu_to_le16(
571 ocfs2_max_inline_data_with_xattr(osb->sb, fe));
Mark Fasheh5b6a3a22007-09-13 16:33:54 -0700572 } else {
573 fel = &fe->id2.i_list;
574 fel->l_tree_depth = 0;
575 fel->l_next_free_rec = 0;
576 fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb));
577 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800578
Joel Beckerec20cec2010-03-19 14:13:52 -0700579 ocfs2_journal_dirty(handle, *new_fe_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800580
Joel Beckerb657c952008-11-13 14:49:11 -0800581 ocfs2_populate_inode(inode, fe, 1);
Joel Becker0cf2f762009-02-12 16:41:25 -0800582 ocfs2_ci_set_new(osb, INODE_CACHE(inode));
Sunil Mushranc271c5c2006-12-05 17:56:35 -0800583 if (!ocfs2_mount_local(osb)) {
584 status = ocfs2_create_new_inode_locks(inode);
585 if (status < 0)
586 mlog_errno(status);
587 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800588
Darrick J. Wong2931cdc2014-04-03 14:46:48 -0700589 oi->i_sync_tid = handle->h_transaction->t_tid;
590 oi->i_datasync_tid = handle->h_transaction->t_tid;
591
Mark Fashehccd979b2005-12-15 14:31:24 -0800592leave:
593 if (status < 0) {
594 if (*new_fe_bh) {
595 brelse(*new_fe_bh);
596 *new_fe_bh = NULL;
597 }
Mark Fashehccd979b2005-12-15 14:31:24 -0800598 }
599
Tao Mac1e8d352011-03-07 16:43:21 +0800600 if (status)
601 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -0800602 return status;
603}
604
Mark Fasheh021960c2010-08-13 15:15:15 -0700605static int ocfs2_mknod_locked(struct ocfs2_super *osb,
606 struct inode *dir,
607 struct inode *inode,
608 dev_t dev,
609 struct buffer_head **new_fe_bh,
610 struct buffer_head *parent_fe_bh,
611 handle_t *handle,
612 struct ocfs2_alloc_context *inode_ac)
613{
614 int status = 0;
615 u64 suballoc_loc, fe_blkno = 0;
616 u16 suballoc_bit;
617
618 *new_fe_bh = NULL;
619
620 status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh,
621 inode_ac, &suballoc_loc,
622 &suballoc_bit, &fe_blkno);
623 if (status < 0) {
624 mlog_errno(status);
625 return status;
626 }
627
alex chenb1529a42015-11-05 18:44:10 -0800628 status = __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh,
Mark Fasheh021960c2010-08-13 15:15:15 -0700629 parent_fe_bh, handle, inode_ac,
630 fe_blkno, suballoc_loc, suballoc_bit);
alex chenb1529a42015-11-05 18:44:10 -0800631 if (status < 0) {
632 u64 bg_blkno = ocfs2_which_suballoc_group(fe_blkno, suballoc_bit);
633 int tmp = ocfs2_free_suballoc_bits(handle, inode_ac->ac_inode,
634 inode_ac->ac_bh, suballoc_bit, bg_blkno, 1);
635 if (tmp)
636 mlog_errno(tmp);
637 }
638
639 return status;
Mark Fasheh021960c2010-08-13 15:15:15 -0700640}
641
Mark Fashehccd979b2005-12-15 14:31:24 -0800642static int ocfs2_mkdir(struct inode *dir,
643 struct dentry *dentry,
Al Viro18bb1db2011-07-26 01:41:39 -0400644 umode_t mode)
Mark Fashehccd979b2005-12-15 14:31:24 -0800645{
646 int ret;
647
Tao Ma8990e442011-02-23 22:45:26 +0800648 trace_ocfs2_mkdir(dir, dentry, dentry->d_name.len, dentry->d_name.name,
649 OCFS2_I(dir)->ip_blkno, mode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800650 ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0);
Tao Mac1e8d352011-03-07 16:43:21 +0800651 if (ret)
652 mlog_errno(ret);
Mark Fashehccd979b2005-12-15 14:31:24 -0800653
654 return ret;
655}
656
657static int ocfs2_create(struct inode *dir,
658 struct dentry *dentry,
Al Viro4acdaf22011-07-26 01:42:34 -0400659 umode_t mode,
Al Viroebfc3b42012-06-10 18:05:36 -0400660 bool excl)
Mark Fashehccd979b2005-12-15 14:31:24 -0800661{
662 int ret;
663
Tao Ma8990e442011-02-23 22:45:26 +0800664 trace_ocfs2_create(dir, dentry, dentry->d_name.len, dentry->d_name.name,
665 (unsigned long long)OCFS2_I(dir)->ip_blkno, mode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800666 ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0);
Tao Mac1e8d352011-03-07 16:43:21 +0800667 if (ret)
668 mlog_errno(ret);
Mark Fashehccd979b2005-12-15 14:31:24 -0800669
670 return ret;
671}
672
673static int ocfs2_link(struct dentry *old_dentry,
674 struct inode *dir,
675 struct dentry *dentry)
676{
Mark Fasheh1fabe142006-10-09 18:11:45 -0700677 handle_t *handle;
David Howells2b0143b2015-03-17 22:25:59 +0000678 struct inode *inode = d_inode(old_dentry);
679 struct inode *old_dir = d_inode(old_dentry->d_parent);
Mark Fashehccd979b2005-12-15 14:31:24 -0800680 int err;
681 struct buffer_head *fe_bh = NULL;
Xue jiufei53dc20b2015-01-08 14:32:23 -0800682 struct buffer_head *old_dir_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800683 struct buffer_head *parent_fe_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800684 struct ocfs2_dinode *fe = NULL;
685 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800686 struct ocfs2_dir_lookup_result lookup = { NULL, };
Joel Becker547ba7c2010-05-10 11:56:52 -0700687 sigset_t oldset;
Xue jiufei0e048312014-02-10 14:25:54 -0800688 u64 old_de_ino;
Mark Fashehccd979b2005-12-15 14:31:24 -0800689
Tao Ma8990e442011-02-23 22:45:26 +0800690 trace_ocfs2_link((unsigned long long)OCFS2_I(inode)->ip_blkno,
691 old_dentry->d_name.len, old_dentry->d_name.name,
692 dentry->d_name.len, dentry->d_name.name);
Mark Fashehccd979b2005-12-15 14:31:24 -0800693
Mark Fasheh123a9642006-10-05 16:48:23 -0700694 if (S_ISDIR(inode->i_mode))
695 return -EPERM;
Mark Fashehccd979b2005-12-15 14:31:24 -0800696
Jan Kara9c89fe02015-07-14 13:36:02 +0200697 err = dquot_initialize(dir);
698 if (err) {
699 mlog_errno(err);
700 return err;
701 }
Christoph Hellwig907f4552010-03-03 09:05:06 -0500702
Xue jiufei53dc20b2015-01-08 14:32:23 -0800703 err = ocfs2_double_lock(osb, &old_dir_bh, old_dir,
704 &parent_fe_bh, dir, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -0800705 if (err < 0) {
706 if (err != -ENOENT)
707 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700708 return err;
Mark Fashehccd979b2005-12-15 14:31:24 -0800709 }
710
Xue jiufei53dc20b2015-01-08 14:32:23 -0800711 /* make sure both dirs have bhs
712 * get an extra ref on old_dir_bh if old==new */
713 if (!parent_fe_bh) {
714 if (old_dir_bh) {
715 parent_fe_bh = old_dir_bh;
716 get_bh(parent_fe_bh);
717 } else {
718 mlog(ML_ERROR, "%s: no old_dir_bh!\n", osb->uuid_str);
719 err = -EIO;
720 goto out;
721 }
722 }
723
Tiger Yang0f62de22006-08-31 20:39:47 -0700724 if (!dir->i_nlink) {
725 err = -ENOENT;
Mark Fasheh123a9642006-10-05 16:48:23 -0700726 goto out;
Tiger Yang0f62de22006-08-31 20:39:47 -0700727 }
728
Xue jiufei53dc20b2015-01-08 14:32:23 -0800729 err = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name,
Xue jiufei0e048312014-02-10 14:25:54 -0800730 old_dentry->d_name.len, &old_de_ino);
731 if (err) {
732 err = -ENOENT;
733 goto out;
734 }
735
736 /*
737 * Check whether another node removed the source inode while we
738 * were in the vfs.
739 */
740 if (old_de_ino != OCFS2_I(inode)->ip_blkno) {
741 err = -ENOENT;
742 goto out;
743 }
744
Mark Fashehccd979b2005-12-15 14:31:24 -0800745 err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
746 dentry->d_name.len);
747 if (err)
Mark Fasheh123a9642006-10-05 16:48:23 -0700748 goto out;
Mark Fashehccd979b2005-12-15 14:31:24 -0800749
750 err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
751 dentry->d_name.name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800752 dentry->d_name.len, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800753 if (err < 0) {
754 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700755 goto out;
Mark Fashehccd979b2005-12-15 14:31:24 -0800756 }
757
Mark Fashehe63aecb62007-10-18 15:30:42 -0700758 err = ocfs2_inode_lock(inode, &fe_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -0800759 if (err < 0) {
760 if (err != -ENOENT)
761 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700762 goto out;
Mark Fashehccd979b2005-12-15 14:31:24 -0800763 }
764
765 fe = (struct ocfs2_dinode *) fe_bh->b_data;
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800766 if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800767 err = -EMLINK;
Mark Fasheh123a9642006-10-05 16:48:23 -0700768 goto out_unlock_inode;
Mark Fashehccd979b2005-12-15 14:31:24 -0800769 }
770
Jan Karaa90714c2008-10-09 19:38:40 +0200771 handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb));
Mark Fashehccd979b2005-12-15 14:31:24 -0800772 if (IS_ERR(handle)) {
773 err = PTR_ERR(handle);
774 handle = NULL;
775 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700776 goto out_unlock_inode;
Mark Fashehccd979b2005-12-15 14:31:24 -0800777 }
778
Joel Becker547ba7c2010-05-10 11:56:52 -0700779 /* Starting to change things, restart is no longer possible. */
780 ocfs2_block_signals(&oldset);
781
Joel Becker0cf2f762009-02-12 16:41:25 -0800782 err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700783 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800784 if (err < 0) {
785 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700786 goto out_commit;
Mark Fashehccd979b2005-12-15 14:31:24 -0800787 }
788
Dave Hansend8c76e62006-09-30 23:29:04 -0700789 inc_nlink(inode);
Deepa Dinamani078cd822016-09-14 07:48:04 -0700790 inode->i_ctime = current_time(inode);
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800791 ocfs2_set_links_count(fe, inode->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -0800792 fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
793 fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
Joel Beckerec20cec2010-03-19 14:13:52 -0700794 ocfs2_journal_dirty(handle, fe_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800795
796 err = ocfs2_add_entry(handle, dentry, inode,
797 OCFS2_I(inode)->ip_blkno,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800798 parent_fe_bh, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800799 if (err) {
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800800 ocfs2_add_links_count(fe, -1);
Dave Hansen9a53c3a2006-09-30 23:29:03 -0700801 drop_nlink(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800802 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700803 goto out_commit;
Mark Fashehccd979b2005-12-15 14:31:24 -0800804 }
805
Mark Fasheh0027dd52006-09-21 16:51:28 -0700806 err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
Mark Fasheh379dfe92006-09-08 14:21:03 -0700807 if (err) {
808 mlog_errno(err);
Mark Fasheh123a9642006-10-05 16:48:23 -0700809 goto out_commit;
Mark Fasheh379dfe92006-09-08 14:21:03 -0700810 }
811
Al Viro7de9c6ee2010-10-23 11:11:40 -0400812 ihold(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -0800813 d_instantiate(dentry, inode);
Mark Fasheh123a9642006-10-05 16:48:23 -0700814
815out_commit:
Mark Fasheh02dc1af2006-10-09 16:48:10 -0700816 ocfs2_commit_trans(osb, handle);
Joel Becker547ba7c2010-05-10 11:56:52 -0700817 ocfs2_unblock_signals(&oldset);
Mark Fasheh123a9642006-10-05 16:48:23 -0700818out_unlock_inode:
Mark Fashehe63aecb62007-10-18 15:30:42 -0700819 ocfs2_inode_unlock(inode, 1);
Mark Fasheh123a9642006-10-05 16:48:23 -0700820
821out:
Xue jiufei53dc20b2015-01-08 14:32:23 -0800822 ocfs2_double_unlock(old_dir, dir);
Mark Fasheh123a9642006-10-05 16:48:23 -0700823
Mark Fasheha81cb882008-10-07 14:25:16 -0700824 brelse(fe_bh);
825 brelse(parent_fe_bh);
Xue jiufei53dc20b2015-01-08 14:32:23 -0800826 brelse(old_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800827
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800828 ocfs2_free_dir_lookup_result(&lookup);
829
Tao Mac1e8d352011-03-07 16:43:21 +0800830 if (err)
831 mlog_errno(err);
Mark Fashehccd979b2005-12-15 14:31:24 -0800832
833 return err;
834}
835
Mark Fasheh379dfe92006-09-08 14:21:03 -0700836/*
837 * Takes and drops an exclusive lock on the given dentry. This will
838 * force other nodes to drop it.
839 */
840static int ocfs2_remote_dentry_delete(struct dentry *dentry)
841{
842 int ret;
843
844 ret = ocfs2_dentry_lock(dentry, 1);
845 if (ret)
846 mlog_errno(ret);
847 else
848 ocfs2_dentry_unlock(dentry, 1);
849
850 return ret;
851}
852
Younger Liub5a8bb72013-07-03 15:01:01 -0700853static inline int ocfs2_inode_is_unlinkable(struct inode *inode)
Mark Fasheh17ff7852006-09-30 23:29:05 -0700854{
855 if (S_ISDIR(inode->i_mode)) {
856 if (inode->i_nlink == 2)
857 return 1;
858 return 0;
859 }
860
861 if (inode->i_nlink == 1)
862 return 1;
863 return 0;
864}
865
Mark Fashehccd979b2005-12-15 14:31:24 -0800866static int ocfs2_unlink(struct inode *dir,
867 struct dentry *dentry)
868{
869 int status;
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700870 int child_locked = 0;
Younger Liub5a8bb72013-07-03 15:01:01 -0700871 bool is_unlinkable = false;
David Howells2b0143b2015-03-17 22:25:59 +0000872 struct inode *inode = d_inode(dentry);
Mark Fasheh5098c272006-10-05 18:12:57 -0700873 struct inode *orphan_dir = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800874 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
875 u64 blkno;
876 struct ocfs2_dinode *fe = NULL;
877 struct buffer_head *fe_bh = NULL;
878 struct buffer_head *parent_node_bh = NULL;
Mark Fasheh1fabe142006-10-09 18:11:45 -0700879 handle_t *handle = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -0800880 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800881 struct ocfs2_dir_lookup_result lookup = { NULL, };
882 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
Mark Fashehccd979b2005-12-15 14:31:24 -0800883
Tao Ma8990e442011-02-23 22:45:26 +0800884 trace_ocfs2_unlink(dir, dentry, dentry->d_name.len,
885 dentry->d_name.name,
886 (unsigned long long)OCFS2_I(dir)->ip_blkno,
887 (unsigned long long)OCFS2_I(inode)->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -0800888
Jan Kara9c89fe02015-07-14 13:36:02 +0200889 status = dquot_initialize(dir);
890 if (status) {
891 mlog_errno(status);
892 return status;
893 }
Christoph Hellwig907f4552010-03-03 09:05:06 -0500894
David Howells2b0143b2015-03-17 22:25:59 +0000895 BUG_ON(d_inode(dentry->d_parent) != dir);
Mark Fashehccd979b2005-12-15 14:31:24 -0800896
Tao Ma8990e442011-02-23 22:45:26 +0800897 if (inode == osb->root_inode)
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700898 return -EPERM;
Mark Fashehccd979b2005-12-15 14:31:24 -0800899
Jan Karacb257972009-06-04 15:26:50 +0200900 status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1,
901 OI_LS_PARENT);
Mark Fashehccd979b2005-12-15 14:31:24 -0800902 if (status < 0) {
903 if (status != -ENOENT)
904 mlog_errno(status);
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700905 return status;
Mark Fashehccd979b2005-12-15 14:31:24 -0800906 }
907
908 status = ocfs2_find_files_on_disk(dentry->d_name.name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800909 dentry->d_name.len, &blkno, dir,
910 &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800911 if (status < 0) {
912 if (status != -ENOENT)
913 mlog_errno(status);
914 goto leave;
915 }
916
917 if (OCFS2_I(inode)->ip_blkno != blkno) {
918 status = -ENOENT;
919
Tao Ma8990e442011-02-23 22:45:26 +0800920 trace_ocfs2_unlink_noent(
921 (unsigned long long)OCFS2_I(inode)->ip_blkno,
922 (unsigned long long)blkno,
923 OCFS2_I(inode)->ip_flags);
Mark Fashehccd979b2005-12-15 14:31:24 -0800924 goto leave;
925 }
926
Mark Fashehe63aecb62007-10-18 15:30:42 -0700927 status = ocfs2_inode_lock(inode, &fe_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -0800928 if (status < 0) {
929 if (status != -ENOENT)
930 mlog_errno(status);
931 goto leave;
932 }
Mark Fasheh30a4f5e2006-10-06 11:49:45 -0700933 child_locked = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -0800934
935 if (S_ISDIR(inode->i_mode)) {
Mark Fashehb80b5492009-02-18 11:41:38 -0800936 if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) {
Mark Fashehccd979b2005-12-15 14:31:24 -0800937 status = -ENOTEMPTY;
938 goto leave;
939 }
940 }
941
Mark Fasheh379dfe92006-09-08 14:21:03 -0700942 status = ocfs2_remote_dentry_delete(dentry);
Mark Fashehccd979b2005-12-15 14:31:24 -0800943 if (status < 0) {
Mark Fasheh34d024f2007-09-24 15:56:19 -0700944 /* This remote delete should succeed under all normal
Mark Fashehccd979b2005-12-15 14:31:24 -0800945 * circumstances. */
946 mlog_errno(status);
947 goto leave;
948 }
949
Younger Liub5a8bb72013-07-03 15:01:01 -0700950 if (ocfs2_inode_is_unlinkable(inode)) {
Tao Ma19bd3412009-08-18 11:44:10 +0800951 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
952 OCFS2_I(inode)->ip_blkno,
Joseph Qi06ee5c72015-02-16 15:59:54 -0800953 orphan_name, &orphan_insert,
954 false);
Mark Fashehccd979b2005-12-15 14:31:24 -0800955 if (status < 0) {
956 mlog_errno(status);
957 goto leave;
958 }
Younger Liub5a8bb72013-07-03 15:01:01 -0700959 is_unlinkable = true;
Mark Fashehccd979b2005-12-15 14:31:24 -0800960 }
961
Jan Karaa90714c2008-10-09 19:38:40 +0200962 handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb));
Mark Fashehccd979b2005-12-15 14:31:24 -0800963 if (IS_ERR(handle)) {
964 status = PTR_ERR(handle);
965 handle = NULL;
966 mlog_errno(status);
967 goto leave;
968 }
969
Joel Becker0cf2f762009-02-12 16:41:25 -0800970 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700971 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -0800972 if (status < 0) {
973 mlog_errno(status);
974 goto leave;
975 }
976
977 fe = (struct ocfs2_dinode *) fe_bh->b_data;
978
Mark Fashehccd979b2005-12-15 14:31:24 -0800979 /* delete the name from the parent dir */
Mark Fasheh4a12ca32008-11-12 15:43:34 -0800980 status = ocfs2_delete_entry(handle, dir, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -0800981 if (status < 0) {
982 mlog_errno(status);
983 goto leave;
984 }
985
Mark Fasheh17ff7852006-09-30 23:29:05 -0700986 if (S_ISDIR(inode->i_mode))
987 drop_nlink(inode);
988 drop_nlink(inode);
Mark Fasheh198a1ca2008-11-20 17:54:57 -0800989 ocfs2_set_links_count(fe, inode->i_nlink);
Joel Beckerec20cec2010-03-19 14:13:52 -0700990 ocfs2_journal_dirty(handle, fe_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -0800991
Deepa Dinamani078cd822016-09-14 07:48:04 -0700992 dir->i_ctime = dir->i_mtime = current_time(dir);
Mark Fasheh592282c2007-01-02 17:59:40 -0800993 if (S_ISDIR(inode->i_mode))
Mark Fasheh17ff7852006-09-30 23:29:05 -0700994 drop_nlink(dir);
Mark Fasheh592282c2007-01-02 17:59:40 -0800995
996 status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh);
997 if (status < 0) {
998 mlog_errno(status);
999 if (S_ISDIR(inode->i_mode))
Dave Hansend8c76e62006-09-30 23:29:04 -07001000 inc_nlink(dir);
Younger Liub5a8bb72013-07-03 15:01:01 -07001001 goto leave;
1002 }
1003
1004 if (is_unlinkable) {
1005 status = ocfs2_orphan_add(osb, handle, inode, fe_bh,
Joseph Qi06ee5c72015-02-16 15:59:54 -08001006 orphan_name, &orphan_insert, orphan_dir, false);
Younger Liub5a8bb72013-07-03 15:01:01 -07001007 if (status < 0)
1008 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001009 }
1010
1011leave:
Mark Fashehccd979b2005-12-15 14:31:24 -08001012 if (handle)
Mark Fasheh02dc1af2006-10-09 16:48:10 -07001013 ocfs2_commit_trans(osb, handle);
Mark Fashehccd979b2005-12-15 14:31:24 -08001014
Mark Fasheh5098c272006-10-05 18:12:57 -07001015 if (orphan_dir) {
1016 /* This was locked for us in ocfs2_prepare_orphan_dir() */
Mark Fashehe63aecb62007-10-18 15:30:42 -07001017 ocfs2_inode_unlock(orphan_dir, 1);
Al Viro59551022016-01-22 15:40:57 -05001018 inode_unlock(orphan_dir);
Mark Fasheh5098c272006-10-05 18:12:57 -07001019 iput(orphan_dir);
1020 }
1021
Joseph Qi3cb2ec42015-09-04 15:43:52 -07001022 if (child_locked)
1023 ocfs2_inode_unlock(inode, 1);
1024
1025 ocfs2_inode_unlock(dir, 1);
1026
Mark Fasheha81cb882008-10-07 14:25:16 -07001027 brelse(fe_bh);
Mark Fasheha81cb882008-10-07 14:25:16 -07001028 brelse(parent_node_bh);
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001029
1030 ocfs2_free_dir_lookup_result(&orphan_insert);
1031 ocfs2_free_dir_lookup_result(&lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08001032
Xiaowei.Huf5b25852014-01-27 17:06:56 -08001033 if (status && (status != -ENOTEMPTY) && (status != -ENOENT))
Tao Mac1e8d352011-03-07 16:43:21 +08001034 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001035
1036 return status;
1037}
1038
Yiwen Jiangf7a14f32014-06-23 13:22:09 -07001039static int ocfs2_check_if_ancestor(struct ocfs2_super *osb,
1040 u64 src_inode_no, u64 dest_inode_no)
1041{
1042 int ret = 0, i = 0;
1043 u64 parent_inode_no = 0;
1044 u64 child_inode_no = src_inode_no;
1045 struct inode *child_inode;
1046
1047#define MAX_LOOKUP_TIMES 32
1048 while (1) {
1049 child_inode = ocfs2_iget(osb, child_inode_no, 0, 0);
1050 if (IS_ERR(child_inode)) {
1051 ret = PTR_ERR(child_inode);
1052 break;
1053 }
1054
1055 ret = ocfs2_inode_lock(child_inode, NULL, 0);
1056 if (ret < 0) {
1057 iput(child_inode);
1058 if (ret != -ENOENT)
1059 mlog_errno(ret);
1060 break;
1061 }
1062
1063 ret = ocfs2_lookup_ino_from_name(child_inode, "..", 2,
1064 &parent_inode_no);
1065 ocfs2_inode_unlock(child_inode, 0);
1066 iput(child_inode);
1067 if (ret < 0) {
1068 ret = -ENOENT;
1069 break;
1070 }
1071
1072 if (parent_inode_no == dest_inode_no) {
1073 ret = 1;
1074 break;
1075 }
1076
1077 if (parent_inode_no == osb->root_inode->i_ino) {
1078 ret = 0;
1079 break;
1080 }
1081
1082 child_inode_no = parent_inode_no;
1083
1084 if (++i >= MAX_LOOKUP_TIMES) {
1085 mlog(ML_NOTICE, "max lookup times reached, filesystem "
1086 "may have nested directories, "
1087 "src inode: %llu, dest inode: %llu.\n",
1088 (unsigned long long)src_inode_no,
1089 (unsigned long long)dest_inode_no);
1090 ret = 0;
1091 break;
1092 }
1093 }
1094
1095 return ret;
1096}
1097
Mark Fashehccd979b2005-12-15 14:31:24 -08001098/*
Xue jiufei53dc20b2015-01-08 14:32:23 -08001099 * The only place this should be used is rename and link!
Mark Fashehccd979b2005-12-15 14:31:24 -08001100 * if they have the same id, then the 1st one is the only one locked.
1101 */
1102static int ocfs2_double_lock(struct ocfs2_super *osb,
Mark Fashehccd979b2005-12-15 14:31:24 -08001103 struct buffer_head **bh1,
1104 struct inode *inode1,
1105 struct buffer_head **bh2,
Xue jiufei53dc20b2015-01-08 14:32:23 -08001106 struct inode *inode2,
1107 int rename)
Mark Fashehccd979b2005-12-15 14:31:24 -08001108{
1109 int status;
Yiwen Jiangf7a14f32014-06-23 13:22:09 -07001110 int inode1_is_ancestor, inode2_is_ancestor;
Mark Fashehccd979b2005-12-15 14:31:24 -08001111 struct ocfs2_inode_info *oi1 = OCFS2_I(inode1);
1112 struct ocfs2_inode_info *oi2 = OCFS2_I(inode2);
Mark Fashehccd979b2005-12-15 14:31:24 -08001113
Tao Ma8990e442011-02-23 22:45:26 +08001114 trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno,
1115 (unsigned long long)oi2->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08001116
Mark Fashehccd979b2005-12-15 14:31:24 -08001117 if (*bh1)
1118 *bh1 = NULL;
1119 if (*bh2)
1120 *bh2 = NULL;
1121
Yiwen Jiangf7a14f32014-06-23 13:22:09 -07001122 /* we always want to lock the one with the lower lockid first.
1123 * and if they are nested, we lock ancestor first */
Mark Fashehccd979b2005-12-15 14:31:24 -08001124 if (oi1->ip_blkno != oi2->ip_blkno) {
Yiwen Jiangf7a14f32014-06-23 13:22:09 -07001125 inode1_is_ancestor = ocfs2_check_if_ancestor(osb, oi2->ip_blkno,
1126 oi1->ip_blkno);
1127 if (inode1_is_ancestor < 0) {
1128 status = inode1_is_ancestor;
1129 goto bail;
1130 }
1131
1132 inode2_is_ancestor = ocfs2_check_if_ancestor(osb, oi1->ip_blkno,
1133 oi2->ip_blkno);
1134 if (inode2_is_ancestor < 0) {
1135 status = inode2_is_ancestor;
1136 goto bail;
1137 }
1138
1139 if ((inode1_is_ancestor == 1) ||
1140 (oi1->ip_blkno < oi2->ip_blkno &&
1141 inode2_is_ancestor == 0)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001142 /* switch id1 and id2 around */
Fabian Frederickab1ba022015-06-24 16:55:31 -07001143 swap(bh2, bh1);
1144 swap(inode2, inode1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001145 }
1146 /* lock id2 */
Jan Karacb257972009-06-04 15:26:50 +02001147 status = ocfs2_inode_lock_nested(inode2, bh2, 1,
Xue jiufei53dc20b2015-01-08 14:32:23 -08001148 rename == 1 ? OI_LS_RENAME1 : OI_LS_PARENT);
Mark Fashehccd979b2005-12-15 14:31:24 -08001149 if (status < 0) {
1150 if (status != -ENOENT)
1151 mlog_errno(status);
1152 goto bail;
1153 }
1154 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001155
Mark Fashehccd979b2005-12-15 14:31:24 -08001156 /* lock id1 */
Xue jiufei53dc20b2015-01-08 14:32:23 -08001157 status = ocfs2_inode_lock_nested(inode1, bh1, 1,
1158 rename == 1 ? OI_LS_RENAME2 : OI_LS_PARENT);
Mark Fashehccd979b2005-12-15 14:31:24 -08001159 if (status < 0) {
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001160 /*
1161 * An error return must mean that no cluster locks
1162 * were held on function exit.
1163 */
Tao Ma1e6d9152010-12-20 16:21:11 +08001164 if (oi1->ip_blkno != oi2->ip_blkno) {
Mark Fashehe63aecb62007-10-18 15:30:42 -07001165 ocfs2_inode_unlock(inode2, 1);
Tao Ma1e6d9152010-12-20 16:21:11 +08001166 brelse(*bh2);
1167 *bh2 = NULL;
1168 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001169
Mark Fashehccd979b2005-12-15 14:31:24 -08001170 if (status != -ENOENT)
1171 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001172 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001173
Tao Ma8990e442011-02-23 22:45:26 +08001174 trace_ocfs2_double_lock_end(
piaojund324cd42018-04-05 16:18:37 -07001175 (unsigned long long)oi1->ip_blkno,
1176 (unsigned long long)oi2->ip_blkno);
Tao Ma8990e442011-02-23 22:45:26 +08001177
Mark Fashehccd979b2005-12-15 14:31:24 -08001178bail:
Tao Mac1e8d352011-03-07 16:43:21 +08001179 if (status)
1180 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001181 return status;
1182}
1183
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001184static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2)
1185{
Mark Fashehe63aecb62007-10-18 15:30:42 -07001186 ocfs2_inode_unlock(inode1, 1);
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001187
1188 if (inode1 != inode2)
Mark Fashehe63aecb62007-10-18 15:30:42 -07001189 ocfs2_inode_unlock(inode2, 1);
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001190}
1191
Mark Fashehccd979b2005-12-15 14:31:24 -08001192static int ocfs2_rename(struct inode *old_dir,
1193 struct dentry *old_dentry,
1194 struct inode *new_dir,
Miklos Szeredi1cd66c92016-09-27 11:03:58 +02001195 struct dentry *new_dentry,
1196 unsigned int flags)
Mark Fashehccd979b2005-12-15 14:31:24 -08001197{
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001198 int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0;
1199 int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0;
David Howells2b0143b2015-03-17 22:25:59 +00001200 struct inode *old_inode = d_inode(old_dentry);
1201 struct inode *new_inode = d_inode(new_dentry);
Mark Fasheh5098c272006-10-05 18:12:57 -07001202 struct inode *orphan_dir = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001203 struct ocfs2_dinode *newfe = NULL;
1204 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
Mark Fashehccd979b2005-12-15 14:31:24 -08001205 struct buffer_head *newfe_bh = NULL;
Mark Fasheh592282c2007-01-02 17:59:40 -08001206 struct buffer_head *old_inode_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001207 struct ocfs2_super *osb = NULL;
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001208 u64 newfe_blkno, old_de_ino;
Mark Fasheh1fabe142006-10-09 18:11:45 -07001209 handle_t *handle = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001210 struct buffer_head *old_dir_bh = NULL;
1211 struct buffer_head *new_dir_bh = NULL;
Al Viro847c9db2012-02-12 21:00:05 -05001212 u32 old_dir_nlink = old_dir->i_nlink;
Sunil Mushran480214d2007-08-06 15:11:56 -07001213 struct ocfs2_dinode *old_di;
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001214 struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, };
1215 struct ocfs2_dir_lookup_result target_lookup_res = { NULL, };
1216 struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, };
1217 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
1218 struct ocfs2_dir_lookup_result target_insert = { NULL, };
alex chen5fb1beb2014-06-23 13:22:07 -07001219 bool should_add_orphan = false;
Mark Fashehccd979b2005-12-15 14:31:24 -08001220
Miklos Szeredi1cd66c92016-09-27 11:03:58 +02001221 if (flags)
1222 return -EINVAL;
1223
Mark Fashehccd979b2005-12-15 14:31:24 -08001224 /* At some point it might be nice to break this function up a
1225 * bit. */
1226
Tao Ma8990e442011-02-23 22:45:26 +08001227 trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry,
1228 old_dentry->d_name.len, old_dentry->d_name.name,
1229 new_dentry->d_name.len, new_dentry->d_name.name);
Mark Fashehccd979b2005-12-15 14:31:24 -08001230
Jan Kara9c89fe02015-07-14 13:36:02 +02001231 status = dquot_initialize(old_dir);
1232 if (status) {
1233 mlog_errno(status);
1234 goto bail;
1235 }
1236 status = dquot_initialize(new_dir);
1237 if (status) {
1238 mlog_errno(status);
1239 goto bail;
1240 }
Christoph Hellwig907f4552010-03-03 09:05:06 -05001241
Mark Fashehccd979b2005-12-15 14:31:24 -08001242 osb = OCFS2_SB(old_dir->i_sb);
1243
1244 if (new_inode) {
1245 if (!igrab(new_inode))
1246 BUG();
1247 }
1248
Uwe Kleine-König1b3c3712007-02-17 19:23:03 +01001249 /* Assume a directory hierarchy thusly:
Mark Fashehccd979b2005-12-15 14:31:24 -08001250 * a/b/c
1251 * a/d
1252 * a,b,c, and d are all directories.
1253 *
1254 * from cwd of 'a' on both nodes:
1255 * node1: mv b/c d
1256 * node2: mv d b/c
1257 *
1258 * And that's why, just like the VFS, we need a file system
1259 * rename lock. */
Jan Kara5dabd692008-02-21 18:00:00 +01001260 if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001261 status = ocfs2_rename_lock(osb);
1262 if (status < 0) {
1263 mlog_errno(status);
1264 goto bail;
1265 }
1266 rename_lock = 1;
Yiwen Jiangf7a14f32014-06-23 13:22:09 -07001267
1268 /* here we cannot guarantee the inodes haven't just been
1269 * changed, so check if they are nested again */
1270 status = ocfs2_check_if_ancestor(osb, new_dir->i_ino,
1271 old_inode->i_ino);
1272 if (status < 0) {
1273 mlog_errno(status);
1274 goto bail;
1275 } else if (status == 1) {
1276 status = -EPERM;
1277 trace_ocfs2_rename_not_permitted(
1278 (unsigned long long)old_inode->i_ino,
1279 (unsigned long long)new_dir->i_ino);
1280 goto bail;
1281 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001282 }
1283
Mark Fashehccd979b2005-12-15 14:31:24 -08001284 /* if old and new are the same, this'll just do one lock. */
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001285 status = ocfs2_double_lock(osb, &old_dir_bh, old_dir,
Xue jiufei53dc20b2015-01-08 14:32:23 -08001286 &new_dir_bh, new_dir, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001287 if (status < 0) {
1288 mlog_errno(status);
1289 goto bail;
1290 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001291 parents_locked = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001292
Yiwen Jiang928dda12015-09-04 15:44:25 -07001293 if (!new_dir->i_nlink) {
1294 status = -EACCES;
1295 goto bail;
1296 }
1297
Mark Fashehccd979b2005-12-15 14:31:24 -08001298 /* make sure both dirs have bhs
1299 * get an extra ref on old_dir_bh if old==new */
1300 if (!new_dir_bh) {
1301 if (old_dir_bh) {
1302 new_dir_bh = old_dir_bh;
1303 get_bh(new_dir_bh);
1304 } else {
1305 mlog(ML_ERROR, "no old_dir_bh!\n");
1306 status = -EIO;
1307 goto bail;
1308 }
1309 }
1310
Mark Fasheh379dfe92006-09-08 14:21:03 -07001311 /*
Mark Fasheh592282c2007-01-02 17:59:40 -08001312 * Aside from allowing a meta data update, the locking here
Mark Fasheh34d024f2007-09-24 15:56:19 -07001313 * also ensures that the downconvert thread on other nodes
1314 * won't have to concurrently downconvert the inode and the
1315 * dentry locks.
Mark Fasheh379dfe92006-09-08 14:21:03 -07001316 */
Jan Karacb257972009-06-04 15:26:50 +02001317 status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1,
1318 OI_LS_PARENT);
Mark Fasheh379dfe92006-09-08 14:21:03 -07001319 if (status < 0) {
1320 if (status != -ENOENT)
Mark Fashehccd979b2005-12-15 14:31:24 -08001321 mlog_errno(status);
Mark Fasheh379dfe92006-09-08 14:21:03 -07001322 goto bail;
1323 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001324 old_child_locked = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001325
Mark Fasheh379dfe92006-09-08 14:21:03 -07001326 status = ocfs2_remote_dentry_delete(old_dentry);
1327 if (status < 0) {
1328 mlog_errno(status);
1329 goto bail;
1330 }
1331
1332 if (S_ISDIR(old_inode->i_mode)) {
Mark Fasheh38760e22007-09-11 17:21:56 -07001333 u64 old_inode_parent;
Mark Fashehccd979b2005-12-15 14:31:24 -08001334
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001335 update_dot_dot = 1;
Mark Fasheh38760e22007-09-11 17:21:56 -07001336 status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001337 old_inode,
1338 &old_inode_dot_dot_res);
Mark Fasheh38760e22007-09-11 17:21:56 -07001339 if (status) {
1340 status = -EIO;
Mark Fashehccd979b2005-12-15 14:31:24 -08001341 goto bail;
Mark Fasheh38760e22007-09-11 17:21:56 -07001342 }
1343
1344 if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) {
1345 status = -EIO;
Mark Fashehccd979b2005-12-15 14:31:24 -08001346 goto bail;
Mark Fasheh38760e22007-09-11 17:21:56 -07001347 }
1348
1349 if (!new_inode && new_dir != old_dir &&
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001350 new_dir->i_nlink >= ocfs2_link_max(osb)) {
Mark Fasheh38760e22007-09-11 17:21:56 -07001351 status = -EMLINK;
1352 goto bail;
1353 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001354 }
1355
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001356 status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name,
1357 old_dentry->d_name.len,
1358 &old_de_ino);
1359 if (status) {
1360 status = -ENOENT;
Mark Fashehccd979b2005-12-15 14:31:24 -08001361 goto bail;
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001362 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001363
1364 /*
1365 * Check for inode number is _not_ due to possible IO errors.
1366 * We might rmdir the source, keep it as pwd of some process
1367 * and merrily kill the link to whatever was created under the
1368 * same name. Goodbye sticky bit ;-<
1369 */
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001370 if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) {
1371 status = -ENOENT;
Mark Fashehccd979b2005-12-15 14:31:24 -08001372 goto bail;
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001373 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001374
1375 /* check if the target already exists (in which case we need
1376 * to delete it */
1377 status = ocfs2_find_files_on_disk(new_dentry->d_name.name,
1378 new_dentry->d_name.len,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001379 &newfe_blkno, new_dir,
1380 &target_lookup_res);
Mark Fashehccd979b2005-12-15 14:31:24 -08001381 /* The only error we allow here is -ENOENT because the new
1382 * file not existing is perfectly valid. */
1383 if ((status < 0) && (status != -ENOENT)) {
1384 /* If we cannot find the file specified we should just */
1385 /* return the error... */
1386 mlog_errno(status);
1387 goto bail;
1388 }
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001389 if (status == 0)
1390 target_exists = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001391
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001392 if (!target_exists && new_inode) {
Srinivas Eedae325a882007-10-31 16:49:43 -07001393 /*
1394 * Target was unlinked by another node while we were
1395 * waiting to get to ocfs2_rename(). There isn't
1396 * anything we can do here to help the situation, so
1397 * bubble up the appropriate error.
1398 */
1399 status = -ENOENT;
1400 goto bail;
1401 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001402
1403 /* In case we need to overwrite an existing file, we blow it
1404 * away first */
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001405 if (target_exists) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001406 /* VFS didn't think there existed an inode here, but
1407 * someone else in the cluster must have raced our
1408 * rename to create one. Today we error cleanly, in
1409 * the future we should consider calling iget to build
1410 * a new struct inode for this entry. */
1411 if (!new_inode) {
1412 status = -EACCES;
1413
Tao Ma8990e442011-02-23 22:45:26 +08001414 trace_ocfs2_rename_target_exists(new_dentry->d_name.len,
1415 new_dentry->d_name.name);
Mark Fashehccd979b2005-12-15 14:31:24 -08001416 goto bail;
1417 }
1418
1419 if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) {
1420 status = -EACCES;
1421
Tao Ma8990e442011-02-23 22:45:26 +08001422 trace_ocfs2_rename_disagree(
Mark Fashehb06970532006-03-03 10:24:33 -08001423 (unsigned long long)OCFS2_I(new_inode)->ip_blkno,
1424 (unsigned long long)newfe_blkno,
Mark Fashehccd979b2005-12-15 14:31:24 -08001425 OCFS2_I(new_inode)->ip_flags);
1426 goto bail;
1427 }
1428
Mark Fashehe63aecb62007-10-18 15:30:42 -07001429 status = ocfs2_inode_lock(new_inode, &newfe_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001430 if (status < 0) {
1431 if (status != -ENOENT)
1432 mlog_errno(status);
1433 goto bail;
1434 }
Mark Fasheh8d5596c2006-10-06 15:04:51 -07001435 new_child_locked = 1;
Mark Fashehccd979b2005-12-15 14:31:24 -08001436
Mark Fasheh379dfe92006-09-08 14:21:03 -07001437 status = ocfs2_remote_dentry_delete(new_dentry);
Mark Fashehccd979b2005-12-15 14:31:24 -08001438 if (status < 0) {
1439 mlog_errno(status);
1440 goto bail;
1441 }
1442
1443 newfe = (struct ocfs2_dinode *) newfe_bh->b_data;
1444
Tao Ma8990e442011-02-23 22:45:26 +08001445 trace_ocfs2_rename_over_existing(
Mark Fashehb06970532006-03-03 10:24:33 -08001446 (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ?
Mark Fashehccd979b2005-12-15 14:31:24 -08001447 (unsigned long long)newfe_bh->b_blocknr : 0ULL);
1448
1449 if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) {
Mark Fasheh5098c272006-10-05 18:12:57 -07001450 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir,
Tao Ma19bd3412009-08-18 11:44:10 +08001451 OCFS2_I(new_inode)->ip_blkno,
Joseph Qi06ee5c72015-02-16 15:59:54 -08001452 orphan_name, &orphan_insert,
1453 false);
Mark Fashehccd979b2005-12-15 14:31:24 -08001454 if (status < 0) {
1455 mlog_errno(status);
1456 goto bail;
1457 }
alex chen5fb1beb2014-06-23 13:22:07 -07001458 should_add_orphan = true;
Mark Fashehccd979b2005-12-15 14:31:24 -08001459 }
1460 } else {
David Howells2b0143b2015-03-17 22:25:59 +00001461 BUG_ON(d_inode(new_dentry->d_parent) != new_dir);
Mark Fashehccd979b2005-12-15 14:31:24 -08001462
1463 status = ocfs2_check_dir_for_entry(new_dir,
1464 new_dentry->d_name.name,
1465 new_dentry->d_name.len);
1466 if (status)
1467 goto bail;
1468
1469 status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh,
1470 new_dentry->d_name.name,
1471 new_dentry->d_name.len,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001472 &target_insert);
Mark Fashehccd979b2005-12-15 14:31:24 -08001473 if (status < 0) {
1474 mlog_errno(status);
1475 goto bail;
1476 }
1477 }
1478
Jan Karaa90714c2008-10-09 19:38:40 +02001479 handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb));
Mark Fashehccd979b2005-12-15 14:31:24 -08001480 if (IS_ERR(handle)) {
1481 status = PTR_ERR(handle);
1482 handle = NULL;
1483 mlog_errno(status);
1484 goto bail;
1485 }
1486
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001487 if (target_exists) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001488 if (S_ISDIR(new_inode->i_mode)) {
Mark Fashehb80b5492009-02-18 11:41:38 -08001489 if (new_inode->i_nlink != 2 ||
1490 !ocfs2_empty_dir(new_inode)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001491 status = -ENOTEMPTY;
1492 goto bail;
1493 }
1494 }
Joel Becker0cf2f762009-02-12 16:41:25 -08001495 status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode),
1496 newfe_bh,
Joel Becker13723d02008-10-17 19:25:01 -07001497 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -08001498 if (status < 0) {
1499 mlog_errno(status);
1500 goto bail;
1501 }
1502
Mark Fashehccd979b2005-12-15 14:31:24 -08001503 /* change the dirent to point to the correct inode */
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001504 status = ocfs2_update_entry(new_dir, handle, &target_lookup_res,
1505 old_inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001506 if (status < 0) {
1507 mlog_errno(status);
1508 goto bail;
1509 }
Jeff Laytoncc56c332017-12-11 06:35:17 -05001510 inode_inc_iversion(new_dir);
Mark Fashehccd979b2005-12-15 14:31:24 -08001511
1512 if (S_ISDIR(new_inode->i_mode))
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001513 ocfs2_set_links_count(newfe, 0);
Mark Fashehccd979b2005-12-15 14:31:24 -08001514 else
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001515 ocfs2_add_links_count(newfe, -1);
Joel Beckerec20cec2010-03-19 14:13:52 -07001516 ocfs2_journal_dirty(handle, newfe_bh);
alex chen5fb1beb2014-06-23 13:22:07 -07001517 if (should_add_orphan) {
1518 status = ocfs2_orphan_add(osb, handle, new_inode,
1519 newfe_bh, orphan_name,
Joseph Qi06ee5c72015-02-16 15:59:54 -08001520 &orphan_insert, orphan_dir, false);
alex chen5fb1beb2014-06-23 13:22:07 -07001521 if (status < 0) {
1522 mlog_errno(status);
1523 goto bail;
1524 }
1525 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001526 } else {
1527 /* if the name was not found in new_dir, add it now */
1528 status = ocfs2_add_entry(handle, new_dentry, old_inode,
1529 OCFS2_I(old_inode)->ip_blkno,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001530 new_dir_bh, &target_insert);
Mark Fashehccd979b2005-12-15 14:31:24 -08001531 }
1532
Deepa Dinamani078cd822016-09-14 07:48:04 -07001533 old_inode->i_ctime = current_time(old_inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001534 mark_inode_dirty(old_inode);
Sunil Mushran480214d2007-08-06 15:11:56 -07001535
Joel Becker0cf2f762009-02-12 16:41:25 -08001536 status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode),
1537 old_inode_bh,
Joel Becker13723d02008-10-17 19:25:01 -07001538 OCFS2_JOURNAL_ACCESS_WRITE);
Sunil Mushran480214d2007-08-06 15:11:56 -07001539 if (status >= 0) {
1540 old_di = (struct ocfs2_dinode *) old_inode_bh->b_data;
1541
1542 old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec);
1543 old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec);
Joel Beckerec20cec2010-03-19 14:13:52 -07001544 ocfs2_journal_dirty(handle, old_inode_bh);
Sunil Mushran480214d2007-08-06 15:11:56 -07001545 } else
1546 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001547
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001548 /*
1549 * Now that the name has been added to new_dir, remove the old name.
1550 *
1551 * We don't keep any directory entry context around until now
1552 * because the insert might have changed the type of directory
1553 * we're dealing with.
1554 */
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001555 status = ocfs2_find_entry(old_dentry->d_name.name,
1556 old_dentry->d_name.len, old_dir,
1557 &old_entry_lookup);
jiangyiwen807a7902015-09-04 15:44:06 -07001558 if (status) {
1559 if (!is_journal_aborted(osb->journal->j_journal)) {
1560 ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s "
1561 "is not deleted.",
1562 new_dentry->d_name.len, new_dentry->d_name.name,
1563 old_dentry->d_name.len, old_dentry->d_name.name);
1564 }
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001565 goto bail;
jiangyiwen807a7902015-09-04 15:44:06 -07001566 }
Mark Fasheh5b6a3a22007-09-13 16:33:54 -07001567
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001568 status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08001569 if (status < 0) {
1570 mlog_errno(status);
jiangyiwen807a7902015-09-04 15:44:06 -07001571 if (!is_journal_aborted(osb->journal->j_journal)) {
1572 ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s "
1573 "is not deleted.",
1574 new_dentry->d_name.len, new_dentry->d_name.name,
1575 old_dentry->d_name.len, old_dentry->d_name.name);
1576 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001577 goto bail;
1578 }
1579
1580 if (new_inode) {
Miklos Szeredi6d6b77f2011-10-28 14:13:28 +02001581 drop_nlink(new_inode);
Deepa Dinamani078cd822016-09-14 07:48:04 -07001582 new_inode->i_ctime = current_time(new_inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001583 }
Deepa Dinamani078cd822016-09-14 07:48:04 -07001584 old_dir->i_ctime = old_dir->i_mtime = current_time(old_dir);
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001585
1586 if (update_dot_dot) {
1587 status = ocfs2_update_entry(old_inode, handle,
1588 &old_inode_dot_dot_res, new_dir);
Miklos Szeredi6d6b77f2011-10-28 14:13:28 +02001589 drop_nlink(old_dir);
Mark Fashehccd979b2005-12-15 14:31:24 -08001590 if (new_inode) {
Miklos Szeredi6d6b77f2011-10-28 14:13:28 +02001591 drop_nlink(new_inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001592 } else {
Dave Hansend8c76e62006-09-30 23:29:04 -07001593 inc_nlink(new_dir);
Mark Fashehccd979b2005-12-15 14:31:24 -08001594 mark_inode_dirty(new_dir);
1595 }
1596 }
1597 mark_inode_dirty(old_dir);
Mark Fasheh592282c2007-01-02 17:59:40 -08001598 ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh);
1599 if (new_inode) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001600 mark_inode_dirty(new_inode);
Mark Fasheh592282c2007-01-02 17:59:40 -08001601 ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh);
1602 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001603
Mark Fasheh592282c2007-01-02 17:59:40 -08001604 if (old_dir != new_dir) {
1605 /* Keep the same times on both directories.*/
1606 new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime;
1607
1608 /*
1609 * This will also pick up the i_nlink change from the
1610 * block above.
1611 */
1612 ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh);
1613 }
Mark Fashehccd979b2005-12-15 14:31:24 -08001614
1615 if (old_dir_nlink != old_dir->i_nlink) {
1616 if (!old_dir_bh) {
1617 mlog(ML_ERROR, "need to change nlink for old dir "
Mark Fashehb06970532006-03-03 10:24:33 -08001618 "%llu from %d to %d but bh is NULL!\n",
1619 (unsigned long long)OCFS2_I(old_dir)->ip_blkno,
1620 (int)old_dir_nlink, old_dir->i_nlink);
Mark Fashehccd979b2005-12-15 14:31:24 -08001621 } else {
1622 struct ocfs2_dinode *fe;
Joel Becker0cf2f762009-02-12 16:41:25 -08001623 status = ocfs2_journal_access_di(handle,
1624 INODE_CACHE(old_dir),
1625 old_dir_bh,
1626 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -08001627 fe = (struct ocfs2_dinode *) old_dir_bh->b_data;
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001628 ocfs2_set_links_count(fe, old_dir->i_nlink);
Joel Beckerec20cec2010-03-19 14:13:52 -07001629 ocfs2_journal_dirty(handle, old_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08001630 }
1631 }
Mark Fasheh379dfe92006-09-08 14:21:03 -07001632 ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir);
Mark Fashehccd979b2005-12-15 14:31:24 -08001633 status = 0;
1634bail:
Mark Fashehccd979b2005-12-15 14:31:24 -08001635 if (handle)
Mark Fasheh02dc1af2006-10-09 16:48:10 -07001636 ocfs2_commit_trans(osb, handle);
Mark Fashehccd979b2005-12-15 14:31:24 -08001637
Mark Fasheh5098c272006-10-05 18:12:57 -07001638 if (orphan_dir) {
1639 /* This was locked for us in ocfs2_prepare_orphan_dir() */
Mark Fashehe63aecb62007-10-18 15:30:42 -07001640 ocfs2_inode_unlock(orphan_dir, 1);
Al Viro59551022016-01-22 15:40:57 -05001641 inode_unlock(orphan_dir);
Mark Fasheh5098c272006-10-05 18:12:57 -07001642 iput(orphan_dir);
1643 }
1644
Joseph Qi3cb2ec42015-09-04 15:43:52 -07001645 if (new_child_locked)
1646 ocfs2_inode_unlock(new_inode, 1);
1647
1648 if (old_child_locked)
1649 ocfs2_inode_unlock(old_inode, 1);
1650
1651 if (parents_locked)
1652 ocfs2_double_unlock(old_dir, new_dir);
1653
1654 if (rename_lock)
1655 ocfs2_rename_unlock(osb);
1656
Mark Fashehccd979b2005-12-15 14:31:24 -08001657 if (new_inode)
1658 sync_mapping_buffers(old_inode->i_mapping);
1659
Joseph Qi72865d92016-01-14 15:17:27 -08001660 iput(new_inode);
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001661
1662 ocfs2_free_dir_lookup_result(&target_lookup_res);
1663 ocfs2_free_dir_lookup_result(&old_entry_lookup);
1664 ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res);
1665 ocfs2_free_dir_lookup_result(&orphan_insert);
1666 ocfs2_free_dir_lookup_result(&target_insert);
1667
Mark Fasheha81cb882008-10-07 14:25:16 -07001668 brelse(newfe_bh);
1669 brelse(old_inode_bh);
1670 brelse(old_dir_bh);
1671 brelse(new_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08001672
Tao Mac1e8d352011-03-07 16:43:21 +08001673 if (status)
1674 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001675
1676 return status;
1677}
1678
1679/*
1680 * we expect i_size = strlen(symname). Copy symname into the file
1681 * data, including the null terminator.
1682 */
1683static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
Mark Fasheh1fabe142006-10-09 18:11:45 -07001684 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -08001685 struct inode *inode,
1686 const char *symname)
1687{
1688 struct buffer_head **bhs = NULL;
1689 const char *c;
1690 struct super_block *sb = osb->sb;
Mark Fasheh4f902c32007-03-09 16:26:50 -08001691 u64 p_blkno, p_blocks;
Mark Fashehccd979b2005-12-15 14:31:24 -08001692 int virtual, blocks, status, i, bytes_left;
1693
1694 bytes_left = i_size_read(inode) + 1;
1695 /* we can't trust i_blocks because we're actually going to
1696 * write i_size + 1 bytes. */
1697 blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
1698
Tao Ma8990e442011-02-23 22:45:26 +08001699 trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks,
1700 i_size_read(inode), blocks);
Mark Fashehccd979b2005-12-15 14:31:24 -08001701
1702 /* Sanity check -- make sure we're going to fit. */
1703 if (bytes_left >
1704 ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) {
1705 status = -EIO;
1706 mlog_errno(status);
1707 goto bail;
1708 }
1709
1710 bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL);
1711 if (!bhs) {
1712 status = -ENOMEM;
1713 mlog_errno(status);
1714 goto bail;
1715 }
1716
Mark Fasheh49cb8d22007-03-09 16:21:46 -08001717 status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks,
1718 NULL);
Mark Fashehccd979b2005-12-15 14:31:24 -08001719 if (status < 0) {
1720 mlog_errno(status);
1721 goto bail;
1722 }
1723
1724 /* links can never be larger than one cluster so we know this
1725 * is all going to be contiguous, but do a sanity check
1726 * anyway. */
1727 if ((p_blocks << sb->s_blocksize_bits) < bytes_left) {
1728 status = -EIO;
1729 mlog_errno(status);
1730 goto bail;
1731 }
1732
1733 virtual = 0;
1734 while(bytes_left > 0) {
1735 c = &symname[virtual * sb->s_blocksize];
1736
1737 bhs[virtual] = sb_getblk(sb, p_blkno);
1738 if (!bhs[virtual]) {
1739 status = -ENOMEM;
1740 mlog_errno(status);
1741 goto bail;
1742 }
Joel Becker8cb471e2009-02-10 20:00:41 -08001743 ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode),
1744 bhs[virtual]);
Mark Fashehccd979b2005-12-15 14:31:24 -08001745
Joel Becker0cf2f762009-02-12 16:41:25 -08001746 status = ocfs2_journal_access(handle, INODE_CACHE(inode),
1747 bhs[virtual],
Mark Fashehccd979b2005-12-15 14:31:24 -08001748 OCFS2_JOURNAL_ACCESS_CREATE);
1749 if (status < 0) {
1750 mlog_errno(status);
1751 goto bail;
1752 }
1753
1754 memset(bhs[virtual]->b_data, 0, sb->s_blocksize);
1755
1756 memcpy(bhs[virtual]->b_data, c,
1757 (bytes_left > sb->s_blocksize) ? sb->s_blocksize :
1758 bytes_left);
1759
Joel Beckerec20cec2010-03-19 14:13:52 -07001760 ocfs2_journal_dirty(handle, bhs[virtual]);
Mark Fashehccd979b2005-12-15 14:31:24 -08001761
1762 virtual++;
1763 p_blkno++;
1764 bytes_left -= sb->s_blocksize;
1765 }
1766
1767 status = 0;
1768bail:
1769
1770 if (bhs) {
1771 for(i = 0; i < blocks; i++)
Mark Fasheha81cb882008-10-07 14:25:16 -07001772 brelse(bhs[i]);
Mark Fashehccd979b2005-12-15 14:31:24 -08001773 kfree(bhs);
1774 }
1775
Tao Mac1e8d352011-03-07 16:43:21 +08001776 if (status)
1777 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001778 return status;
1779}
1780
1781static int ocfs2_symlink(struct inode *dir,
1782 struct dentry *dentry,
1783 const char *symname)
1784{
1785 int status, l, credits;
1786 u64 newsize;
1787 struct ocfs2_super *osb = NULL;
1788 struct inode *inode = NULL;
1789 struct super_block *sb;
1790 struct buffer_head *new_fe_bh = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001791 struct buffer_head *parent_fe_bh = NULL;
1792 struct ocfs2_dinode *fe = NULL;
1793 struct ocfs2_dinode *dirfe;
Mark Fasheh1fabe142006-10-09 18:11:45 -07001794 handle_t *handle = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001795 struct ocfs2_alloc_context *inode_ac = NULL;
1796 struct ocfs2_alloc_context *data_ac = NULL;
Tiger Yang534eadd2008-11-14 11:16:41 +08001797 struct ocfs2_alloc_context *xattr_ac = NULL;
1798 int want_clusters = 0;
1799 int xattr_credits = 0;
1800 struct ocfs2_security_xattr_info si = {
1801 .enable = 1,
1802 };
Jan Karaa90714c2008-10-09 19:38:40 +02001803 int did_quota = 0, did_quota_inode = 0;
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001804 struct ocfs2_dir_lookup_result lookup = { NULL, };
Joel Becker547ba7c2010-05-10 11:56:52 -07001805 sigset_t oldset;
1806 int did_block_signals = 0;
jiangyiwen595297a2014-06-23 13:22:09 -07001807 struct ocfs2_dentry_lock *dl = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08001808
Tao Ma8990e442011-02-23 22:45:26 +08001809 trace_ocfs2_symlink_begin(dir, dentry, symname,
1810 dentry->d_name.len, dentry->d_name.name);
Mark Fashehccd979b2005-12-15 14:31:24 -08001811
Jan Kara9c89fe02015-07-14 13:36:02 +02001812 status = dquot_initialize(dir);
1813 if (status) {
1814 mlog_errno(status);
1815 goto bail;
1816 }
Christoph Hellwig907f4552010-03-03 09:05:06 -05001817
Mark Fashehccd979b2005-12-15 14:31:24 -08001818 sb = dir->i_sb;
1819 osb = OCFS2_SB(sb);
1820
1821 l = strlen(symname) + 1;
1822
1823 credits = ocfs2_calc_symlink_credits(sb);
1824
Mark Fashehccd979b2005-12-15 14:31:24 -08001825 /* lock the parent directory */
Mark Fashehe63aecb62007-10-18 15:30:42 -07001826 status = ocfs2_inode_lock(dir, &parent_fe_bh, 1);
Mark Fashehccd979b2005-12-15 14:31:24 -08001827 if (status < 0) {
1828 if (status != -ENOENT)
1829 mlog_errno(status);
Mark Fasheh6d8fc402006-10-06 11:54:33 -07001830 return status;
Mark Fashehccd979b2005-12-15 14:31:24 -08001831 }
1832
1833 dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
Mark Fasheh198a1ca2008-11-20 17:54:57 -08001834 if (!ocfs2_read_links_count(dirfe)) {
Mark Fashehccd979b2005-12-15 14:31:24 -08001835 /* can't make a file in a deleted directory. */
1836 status = -ENOENT;
1837 goto bail;
1838 }
1839
1840 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
1841 dentry->d_name.len);
1842 if (status)
1843 goto bail;
1844
1845 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh,
1846 dentry->d_name.name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08001847 dentry->d_name.len, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08001848 if (status < 0) {
1849 mlog_errno(status);
1850 goto bail;
1851 }
1852
Mark Fashehda5cbf22006-10-06 18:34:35 -07001853 status = ocfs2_reserve_new_inode(osb, &inode_ac);
Mark Fashehccd979b2005-12-15 14:31:24 -08001854 if (status < 0) {
1855 if (status != -ENOSPC)
1856 mlog_errno(status);
1857 goto bail;
1858 }
1859
Tiger Yangf5d36202008-11-14 11:15:44 +08001860 inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO);
Jan Kara9c89fe02015-07-14 13:36:02 +02001861 if (IS_ERR(inode)) {
1862 status = PTR_ERR(inode);
1863 inode = NULL;
Tiger Yangf5d36202008-11-14 11:15:44 +08001864 mlog_errno(status);
1865 goto bail;
1866 }
1867
Tiger Yang534eadd2008-11-14 11:16:41 +08001868 /* get security xattr */
Eric Paris2a7dba32011-02-01 11:05:39 -05001869 status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si);
Tiger Yang534eadd2008-11-14 11:16:41 +08001870 if (status) {
1871 if (status == -EOPNOTSUPP)
1872 si.enable = 0;
1873 else {
1874 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08001875 goto bail;
1876 }
1877 }
1878
Tiger Yang534eadd2008-11-14 11:16:41 +08001879 /* calculate meta data/clusters for setting security xattr */
1880 if (si.enable) {
1881 status = ocfs2_calc_security_init(dir, &si, &want_clusters,
1882 &xattr_credits, &xattr_ac);
1883 if (status < 0) {
1884 mlog_errno(status);
1885 goto bail;
1886 }
1887 }
1888
1889 /* don't reserve bitmap space for fast symlinks. */
1890 if (l > ocfs2_fast_symlink_chars(sb))
1891 want_clusters += 1;
1892
1893 status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac);
1894 if (status < 0) {
1895 if (status != -ENOSPC)
1896 mlog_errno(status);
1897 goto bail;
1898 }
1899
1900 handle = ocfs2_start_trans(osb, credits + xattr_credits);
Mark Fashehccd979b2005-12-15 14:31:24 -08001901 if (IS_ERR(handle)) {
1902 status = PTR_ERR(handle);
1903 handle = NULL;
1904 mlog_errno(status);
1905 goto bail;
1906 }
1907
Joel Becker547ba7c2010-05-10 11:56:52 -07001908 /* Starting to change things, restart is no longer possible. */
1909 ocfs2_block_signals(&oldset);
1910 did_block_signals = 1;
1911
Christoph Hellwig63936dd2010-03-03 09:05:01 -05001912 status = dquot_alloc_inode(inode);
1913 if (status)
Jan Karaa90714c2008-10-09 19:38:40 +02001914 goto bail;
Jan Karaa90714c2008-10-09 19:38:40 +02001915 did_quota_inode = 1;
1916
Tao Ma8990e442011-02-23 22:45:26 +08001917 trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len,
1918 dentry->d_name.name,
1919 (unsigned long long)OCFS2_I(dir)->ip_blkno,
1920 inode->i_mode);
Tao Ma19bd3412009-08-18 11:44:10 +08001921
1922 status = ocfs2_mknod_locked(osb, dir, inode,
Tiger Yangf5d36202008-11-14 11:15:44 +08001923 0, &new_fe_bh, parent_fe_bh, handle,
1924 inode_ac);
Mark Fashehccd979b2005-12-15 14:31:24 -08001925 if (status < 0) {
1926 mlog_errno(status);
1927 goto bail;
1928 }
1929
1930 fe = (struct ocfs2_dinode *) new_fe_bh->b_data;
1931 inode->i_rdev = 0;
1932 newsize = l - 1;
Al Viroea022dfb2012-05-03 10:14:29 -04001933 inode->i_op = &ocfs2_symlink_inode_operations;
Al Viro21fc61c2015-11-17 01:07:57 -05001934 inode_nohighmem(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001935 if (l > ocfs2_fast_symlink_chars(sb)) {
Mark Fashehdcd05382007-01-16 11:32:23 -08001936 u32 offset = 0;
1937
Christoph Hellwig5dd40562010-03-03 09:05:00 -05001938 status = dquot_alloc_space_nodirty(inode,
1939 ocfs2_clusters_to_bytes(osb->sb, 1));
1940 if (status)
Jan Karaa90714c2008-10-09 19:38:40 +02001941 goto bail;
Jan Karaa90714c2008-10-09 19:38:40 +02001942 did_quota = 1;
Al Viroea022dfb2012-05-03 10:14:29 -04001943 inode->i_mapping->a_ops = &ocfs2_aops;
Tao Ma0eb8d47e2008-08-18 17:38:45 +08001944 status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0,
1945 new_fe_bh,
1946 handle, data_ac, NULL,
1947 NULL);
Mark Fashehccd979b2005-12-15 14:31:24 -08001948 if (status < 0) {
1949 if (status != -ENOSPC && status != -EINTR) {
Mark Fashehb06970532006-03-03 10:24:33 -08001950 mlog(ML_ERROR,
1951 "Failed to extend file to %llu\n",
1952 (unsigned long long)newsize);
Mark Fashehccd979b2005-12-15 14:31:24 -08001953 mlog_errno(status);
1954 status = -ENOSPC;
1955 }
1956 goto bail;
1957 }
1958 i_size_write(inode, newsize);
Mark Fasheh8110b072007-03-22 16:53:23 -07001959 inode->i_blocks = ocfs2_inode_sector_count(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08001960 } else {
Al Viroea022dfb2012-05-03 10:14:29 -04001961 inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops;
Mark Fashehccd979b2005-12-15 14:31:24 -08001962 memcpy((char *) fe->id2.i_symlink, symname, l);
1963 i_size_write(inode, newsize);
1964 inode->i_blocks = 0;
1965 }
1966
1967 status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh);
1968 if (status < 0) {
1969 mlog_errno(status);
1970 goto bail;
1971 }
1972
1973 if (!ocfs2_inode_is_fast_symlink(inode)) {
1974 status = ocfs2_create_symlink_data(osb, handle, inode,
1975 symname);
1976 if (status < 0) {
1977 mlog_errno(status);
1978 goto bail;
1979 }
1980 }
1981
Tiger Yang534eadd2008-11-14 11:16:41 +08001982 if (si.enable) {
1983 status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si,
1984 xattr_ac, data_ac);
1985 if (status < 0) {
1986 mlog_errno(status);
1987 goto bail;
1988 }
1989 }
1990
Mark Fasheha9743fc2010-04-23 11:42:22 -07001991 /*
1992 * Do this before adding the entry to the directory. We add
1993 * also set d_op after success so that ->d_iput() will cleanup
1994 * the dentry lock even if ocfs2_add_entry() fails below.
1995 */
1996 status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno);
1997 if (status) {
1998 mlog_errno(status);
1999 goto bail;
2000 }
Mark Fasheha9743fc2010-04-23 11:42:22 -07002001
jiangyiwen595297a2014-06-23 13:22:09 -07002002 dl = dentry->d_fsdata;
2003
Mark Fashehccd979b2005-12-15 14:31:24 -08002004 status = ocfs2_add_entry(handle, dentry, inode,
2005 le64_to_cpu(fe->i_blkno), parent_fe_bh,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002006 &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08002007 if (status < 0) {
2008 mlog_errno(status);
2009 goto bail;
2010 }
2011
2012 insert_inode_hash(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08002013 d_instantiate(dentry, inode);
2014bail:
Jan Karaa90714c2008-10-09 19:38:40 +02002015 if (status < 0 && did_quota)
Christoph Hellwig5dd40562010-03-03 09:05:00 -05002016 dquot_free_space_nodirty(inode,
Jan Karaa90714c2008-10-09 19:38:40 +02002017 ocfs2_clusters_to_bytes(osb->sb, 1));
2018 if (status < 0 && did_quota_inode)
Christoph Hellwig63936dd2010-03-03 09:05:01 -05002019 dquot_free_inode(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08002020 if (handle)
Mark Fasheh02dc1af2006-10-09 16:48:10 -07002021 ocfs2_commit_trans(osb, handle);
Mark Fasheh6d8fc402006-10-06 11:54:33 -07002022
Mark Fashehe63aecb62007-10-18 15:30:42 -07002023 ocfs2_inode_unlock(dir, 1);
Joel Becker547ba7c2010-05-10 11:56:52 -07002024 if (did_block_signals)
2025 ocfs2_unblock_signals(&oldset);
Mark Fasheh6d8fc402006-10-06 11:54:33 -07002026
Mark Fasheha81cb882008-10-07 14:25:16 -07002027 brelse(new_fe_bh);
2028 brelse(parent_fe_bh);
Tiger Yang534eadd2008-11-14 11:16:41 +08002029 kfree(si.value);
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002030 ocfs2_free_dir_lookup_result(&lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08002031 if (inode_ac)
2032 ocfs2_free_alloc_context(inode_ac);
2033 if (data_ac)
2034 ocfs2_free_alloc_context(data_ac);
Tiger Yang534eadd2008-11-14 11:16:41 +08002035 if (xattr_ac)
2036 ocfs2_free_alloc_context(xattr_ac);
Tiger Yangf5d36202008-11-14 11:15:44 +08002037 if ((status < 0) && inode) {
jiangyiwen595297a2014-06-23 13:22:09 -07002038 if (dl)
2039 ocfs2_cleanup_add_entry_failure(osb, dentry, inode);
2040
Li Dongyangab41fdc2010-04-22 16:11:25 +08002041 OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR;
Tiger Yangf5d36202008-11-14 11:15:44 +08002042 clear_nlink(inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08002043 iput(inode);
Tiger Yangf5d36202008-11-14 11:15:44 +08002044 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002045
Tao Mac1e8d352011-03-07 16:43:21 +08002046 if (status)
2047 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08002048
2049 return status;
2050}
2051
Mark Fashehccd979b2005-12-15 14:31:24 -08002052static int ocfs2_blkno_stringify(u64 blkno, char *name)
2053{
2054 int status, namelen;
2055
Mark Fashehb06970532006-03-03 10:24:33 -08002056 namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx",
2057 (long long)blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08002058 if (namelen <= 0) {
2059 if (namelen)
2060 status = namelen;
2061 else
2062 status = -EINVAL;
2063 mlog_errno(status);
2064 goto bail;
2065 }
2066 if (namelen != OCFS2_ORPHAN_NAMELEN) {
2067 status = -EINVAL;
2068 mlog_errno(status);
2069 goto bail;
2070 }
2071
Tao Ma8990e442011-02-23 22:45:26 +08002072 trace_ocfs2_blkno_stringify(blkno, name, namelen);
Mark Fashehccd979b2005-12-15 14:31:24 -08002073
2074 status = 0;
2075bail:
Tao Mac1e8d352011-03-07 16:43:21 +08002076 if (status < 0)
2077 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08002078 return status;
2079}
2080
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002081static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb,
2082 struct inode **ret_orphan_dir,
2083 struct buffer_head **ret_orphan_dir_bh)
2084{
2085 struct inode *orphan_dir_inode;
2086 struct buffer_head *orphan_dir_bh = NULL;
2087 int ret = 0;
2088
2089 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
2090 ORPHAN_DIR_SYSTEM_INODE,
2091 osb->slot_num);
2092 if (!orphan_dir_inode) {
2093 ret = -ENOENT;
2094 mlog_errno(ret);
2095 return ret;
2096 }
2097
Al Viro59551022016-01-22 15:40:57 -05002098 inode_lock(orphan_dir_inode);
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002099
2100 ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
2101 if (ret < 0) {
Al Viro59551022016-01-22 15:40:57 -05002102 inode_unlock(orphan_dir_inode);
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002103 iput(orphan_dir_inode);
2104
2105 mlog_errno(ret);
2106 return ret;
2107 }
2108
2109 *ret_orphan_dir = orphan_dir_inode;
2110 *ret_orphan_dir_bh = orphan_dir_bh;
2111
2112 return 0;
2113}
2114
2115static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode,
2116 struct buffer_head *orphan_dir_bh,
2117 u64 blkno,
2118 char *name,
Joseph Qi06ee5c72015-02-16 15:59:54 -08002119 struct ocfs2_dir_lookup_result *lookup,
2120 bool dio)
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002121{
2122 int ret;
2123 struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb);
Joseph Qi06ee5c72015-02-16 15:59:54 -08002124 int namelen = dio ?
2125 (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) :
2126 OCFS2_ORPHAN_NAMELEN;
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002127
Joseph Qi06ee5c72015-02-16 15:59:54 -08002128 if (dio) {
2129 ret = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s",
2130 OCFS2_DIO_ORPHAN_PREFIX);
2131 if (ret != OCFS2_DIO_ORPHAN_PREFIX_LEN) {
2132 ret = -EINVAL;
2133 mlog_errno(ret);
2134 return ret;
2135 }
2136
2137 ret = ocfs2_blkno_stringify(blkno,
2138 name + OCFS2_DIO_ORPHAN_PREFIX_LEN);
2139 } else
2140 ret = ocfs2_blkno_stringify(blkno, name);
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002141 if (ret < 0) {
2142 mlog_errno(ret);
2143 return ret;
2144 }
2145
2146 ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode,
2147 orphan_dir_bh, name,
Joseph Qi06ee5c72015-02-16 15:59:54 -08002148 namelen, lookup);
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002149 if (ret < 0) {
2150 mlog_errno(ret);
2151 return ret;
2152 }
2153
2154 return 0;
2155}
2156
2157/**
2158 * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for
2159 * insertion of an orphan.
2160 * @osb: ocfs2 file system
2161 * @ret_orphan_dir: Orphan dir inode - returned locked!
2162 * @blkno: Actual block number of the inode to be inserted into orphan dir.
2163 * @lookup: dir lookup result, to be passed back into functions like
2164 * ocfs2_orphan_add
2165 *
2166 * Returns zero on success and the ret_orphan_dir, name and lookup
2167 * fields will be populated.
2168 *
2169 * Returns non-zero on failure.
2170 */
Mark Fashehccd979b2005-12-15 14:31:24 -08002171static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb,
Mark Fasheh5098c272006-10-05 18:12:57 -07002172 struct inode **ret_orphan_dir,
Tao Ma19bd3412009-08-18 11:44:10 +08002173 u64 blkno,
Mark Fashehccd979b2005-12-15 14:31:24 -08002174 char *name,
Joseph Qi06ee5c72015-02-16 15:59:54 -08002175 struct ocfs2_dir_lookup_result *lookup,
2176 bool dio)
Mark Fashehccd979b2005-12-15 14:31:24 -08002177{
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002178 struct inode *orphan_dir_inode = NULL;
Mark Fashehccd979b2005-12-15 14:31:24 -08002179 struct buffer_head *orphan_dir_bh = NULL;
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002180 int ret = 0;
Mark Fashehccd979b2005-12-15 14:31:24 -08002181
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002182 ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode,
2183 &orphan_dir_bh);
2184 if (ret < 0) {
2185 mlog_errno(ret);
2186 return ret;
Mark Fashehccd979b2005-12-15 14:31:24 -08002187 }
2188
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002189 ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh,
Joseph Qi06ee5c72015-02-16 15:59:54 -08002190 blkno, name, lookup, dio);
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002191 if (ret < 0) {
2192 mlog_errno(ret);
2193 goto out;
Mark Fashehccd979b2005-12-15 14:31:24 -08002194 }
2195
Mark Fasheh5098c272006-10-05 18:12:57 -07002196 *ret_orphan_dir = orphan_dir_inode;
2197
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002198out:
2199 brelse(orphan_dir_bh);
2200
2201 if (ret) {
2202 ocfs2_inode_unlock(orphan_dir_inode, 1);
Al Viro59551022016-01-22 15:40:57 -05002203 inode_unlock(orphan_dir_inode);
Mark Fashehccd979b2005-12-15 14:31:24 -08002204 iput(orphan_dir_inode);
Mark Fasheh5098c272006-10-05 18:12:57 -07002205 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002206
Tao Mac1e8d352011-03-07 16:43:21 +08002207 if (ret)
2208 mlog_errno(ret);
Mark Fashehdd43bcd2010-08-13 15:15:18 -07002209 return ret;
Mark Fashehccd979b2005-12-15 14:31:24 -08002210}
2211
2212static int ocfs2_orphan_add(struct ocfs2_super *osb,
Mark Fasheh1fabe142006-10-09 18:11:45 -07002213 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -08002214 struct inode *inode,
Tristan Ye3939fda2010-03-19 09:21:09 +08002215 struct buffer_head *fe_bh,
Mark Fashehccd979b2005-12-15 14:31:24 -08002216 char *name,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002217 struct ocfs2_dir_lookup_result *lookup,
Joseph Qi06ee5c72015-02-16 15:59:54 -08002218 struct inode *orphan_dir_inode,
2219 bool dio)
Mark Fashehccd979b2005-12-15 14:31:24 -08002220{
Mark Fashehccd979b2005-12-15 14:31:24 -08002221 struct buffer_head *orphan_dir_bh = NULL;
2222 int status = 0;
2223 struct ocfs2_dinode *orphan_fe;
Tristan Ye3939fda2010-03-19 09:21:09 +08002224 struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data;
Joseph Qi06ee5c72015-02-16 15:59:54 -08002225 int namelen = dio ?
2226 (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) :
2227 OCFS2_ORPHAN_NAMELEN;
Mark Fashehccd979b2005-12-15 14:31:24 -08002228
Tao Ma8990e442011-02-23 22:45:26 +08002229 trace_ocfs2_orphan_add_begin(
2230 (unsigned long long)OCFS2_I(inode)->ip_blkno);
Mark Fashehccd979b2005-12-15 14:31:24 -08002231
Joel Beckerb657c952008-11-13 14:49:11 -08002232 status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08002233 if (status < 0) {
2234 mlog_errno(status);
2235 goto leave;
2236 }
2237
Joel Becker0cf2f762009-02-12 16:41:25 -08002238 status = ocfs2_journal_access_di(handle,
2239 INODE_CACHE(orphan_dir_inode),
2240 orphan_dir_bh,
Joel Becker13723d02008-10-17 19:25:01 -07002241 OCFS2_JOURNAL_ACCESS_WRITE);
Mark Fashehccd979b2005-12-15 14:31:24 -08002242 if (status < 0) {
2243 mlog_errno(status);
2244 goto leave;
2245 }
2246
Tristan Ye3939fda2010-03-19 09:21:09 +08002247 /*
2248 * We're going to journal the change of i_flags and i_orphaned_slot.
2249 * It's safe anyway, though some callers may duplicate the journaling.
2250 * Journaling within the func just make the logic look more
2251 * straightforward.
2252 */
2253 status = ocfs2_journal_access_di(handle,
2254 INODE_CACHE(inode),
2255 fe_bh,
2256 OCFS2_JOURNAL_ACCESS_WRITE);
2257 if (status < 0) {
2258 mlog_errno(status);
2259 goto leave;
2260 }
2261
Younger Liuea454662013-07-03 15:00:58 -07002262 /* we're a cluster, and nlink can change on disk from
2263 * underneath us... */
2264 orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
2265 if (S_ISDIR(inode->i_mode))
2266 ocfs2_add_links_count(orphan_fe, 1);
2267 set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe));
2268 ocfs2_journal_dirty(handle, orphan_dir_bh);
2269
2270 status = __ocfs2_add_entry(handle, orphan_dir_inode, name,
Joseph Qi06ee5c72015-02-16 15:59:54 -08002271 namelen, inode,
Younger Liuea454662013-07-03 15:00:58 -07002272 OCFS2_I(inode)->ip_blkno,
2273 orphan_dir_bh, lookup);
2274 if (status < 0) {
2275 mlog_errno(status);
2276 goto rollback;
2277 }
2278
Joseph Qi06ee5c72015-02-16 15:59:54 -08002279 if (dio) {
2280 /* Update flag OCFS2_DIO_ORPHANED_FL and record the orphan
2281 * slot.
2282 */
2283 fe->i_flags |= cpu_to_le32(OCFS2_DIO_ORPHANED_FL);
2284 fe->i_dio_orphaned_slot = cpu_to_le16(osb->slot_num);
2285 } else {
2286 fe->i_flags |= cpu_to_le32(OCFS2_ORPHANED_FL);
2287 OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR;
Mark Fashehccd979b2005-12-15 14:31:24 -08002288
Joseph Qi06ee5c72015-02-16 15:59:54 -08002289 /* Record which orphan dir our inode now resides
2290 * in. delete_inode will use this to determine which orphan
2291 * dir to lock. */
2292 fe->i_orphaned_slot = cpu_to_le16(osb->slot_num);
2293 }
Mark Fashehccd979b2005-12-15 14:31:24 -08002294
Tristan Ye3939fda2010-03-19 09:21:09 +08002295 ocfs2_journal_dirty(handle, fe_bh);
2296
Tao Ma8990e442011-02-23 22:45:26 +08002297 trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno,
2298 osb->slot_num);
Mark Fashehccd979b2005-12-15 14:31:24 -08002299
Younger Liuea454662013-07-03 15:00:58 -07002300rollback:
2301 if (status < 0) {
2302 if (S_ISDIR(inode->i_mode))
2303 ocfs2_add_links_count(orphan_fe, -1);
2304 set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe));
2305 }
2306
Mark Fashehccd979b2005-12-15 14:31:24 -08002307leave:
Mark Fasheha81cb882008-10-07 14:25:16 -07002308 brelse(orphan_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08002309
Mark Fashehccd979b2005-12-15 14:31:24 -08002310 return status;
2311}
2312
2313/* unlike orphan_add, we expect the orphan dir to already be locked here. */
2314int ocfs2_orphan_del(struct ocfs2_super *osb,
Mark Fasheh1fabe142006-10-09 18:11:45 -07002315 handle_t *handle,
Mark Fashehccd979b2005-12-15 14:31:24 -08002316 struct inode *orphan_dir_inode,
2317 struct inode *inode,
Joseph Qi06ee5c72015-02-16 15:59:54 -08002318 struct buffer_head *orphan_dir_bh,
2319 bool dio)
Mark Fashehccd979b2005-12-15 14:31:24 -08002320{
Salvatore Mesoraca64202a22018-06-07 17:04:55 -07002321 char name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1];
Mark Fashehccd979b2005-12-15 14:31:24 -08002322 struct ocfs2_dinode *orphan_fe;
2323 int status = 0;
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002324 struct ocfs2_dir_lookup_result lookup = { NULL, };
Mark Fashehccd979b2005-12-15 14:31:24 -08002325
Joseph Qi06ee5c72015-02-16 15:59:54 -08002326 if (dio) {
2327 status = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s",
2328 OCFS2_DIO_ORPHAN_PREFIX);
2329 if (status != OCFS2_DIO_ORPHAN_PREFIX_LEN) {
2330 status = -EINVAL;
2331 mlog_errno(status);
2332 return status;
2333 }
2334
2335 status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno,
2336 name + OCFS2_DIO_ORPHAN_PREFIX_LEN);
2337 } else
2338 status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name);
Mark Fashehccd979b2005-12-15 14:31:24 -08002339 if (status < 0) {
2340 mlog_errno(status);
2341 goto leave;
2342 }
2343
Tao Ma8990e442011-02-23 22:45:26 +08002344 trace_ocfs2_orphan_del(
2345 (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno,
Joseph Qie38a5732015-04-14 15:43:22 -07002346 name, strlen(name));
Mark Fashehccd979b2005-12-15 14:31:24 -08002347
Joseph Qi074a6c62016-01-14 15:17:44 -08002348 status = ocfs2_journal_access_di(handle,
2349 INODE_CACHE(orphan_dir_inode),
2350 orphan_dir_bh,
2351 OCFS2_JOURNAL_ACCESS_WRITE);
2352 if (status < 0) {
2353 mlog_errno(status);
2354 goto leave;
2355 }
2356
Mark Fashehccd979b2005-12-15 14:31:24 -08002357 /* find it's spot in the orphan directory */
Joseph Qie38a5732015-04-14 15:43:22 -07002358 status = ocfs2_find_entry(name, strlen(name), orphan_dir_inode,
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002359 &lookup);
2360 if (status) {
Mark Fashehccd979b2005-12-15 14:31:24 -08002361 mlog_errno(status);
2362 goto leave;
2363 }
2364
2365 /* remove it from the orphan directory */
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002366 status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08002367 if (status < 0) {
2368 mlog_errno(status);
2369 goto leave;
2370 }
2371
Mark Fashehccd979b2005-12-15 14:31:24 -08002372 /* do the i_nlink dance! :) */
2373 orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
2374 if (S_ISDIR(inode->i_mode))
Mark Fasheh198a1ca2008-11-20 17:54:57 -08002375 ocfs2_add_links_count(orphan_fe, -1);
Miklos Szeredibfe86842011-10-28 14:13:29 +02002376 set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe));
Joel Beckerec20cec2010-03-19 14:13:52 -07002377 ocfs2_journal_dirty(handle, orphan_dir_bh);
Mark Fashehccd979b2005-12-15 14:31:24 -08002378
2379leave:
Mark Fasheh4a12ca32008-11-12 15:43:34 -08002380 ocfs2_free_dir_lookup_result(&lookup);
Mark Fashehccd979b2005-12-15 14:31:24 -08002381
Tao Mac1e8d352011-03-07 16:43:21 +08002382 if (status)
2383 mlog_errno(status);
Mark Fashehccd979b2005-12-15 14:31:24 -08002384 return status;
2385}
2386
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002387/**
Lucas De Marchi25985ed2011-03-30 22:57:33 -03002388 * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to receive a newly
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002389 * allocated file. This is different from the typical 'add to orphan dir'
2390 * operation in that the inode does not yet exist. This is a problem because
2391 * the orphan dir stringifies the inode block number to come up with it's
2392 * dirent. Obviously if the inode does not yet exist we have a chicken and egg
2393 * problem. This function works around it by calling deeper into the orphan
2394 * and suballoc code than other callers. Use this only by necessity.
2395 * @dir: The directory which this inode will ultimately wind up under - not the
2396 * orphan dir!
2397 * @dir_bh: buffer_head the @dir inode block
2398 * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled
2399 * with the string to be used for orphan dirent. Pass back to the orphan dir
2400 * code.
2401 * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan
2402 * dir code.
2403 * @ret_di_blkno: block number where the new inode will be allocated.
2404 * @orphan_insert: Dir insert context to be passed back into orphan dir code.
2405 * @ret_inode_ac: Inode alloc context to be passed back to the allocator.
2406 *
2407 * Returns zero on success and the ret_orphan_dir, name and lookup
2408 * fields will be populated.
2409 *
2410 * Returns non-zero on failure.
2411 */
2412static int ocfs2_prep_new_orphaned_file(struct inode *dir,
2413 struct buffer_head *dir_bh,
2414 char *orphan_name,
2415 struct inode **ret_orphan_dir,
2416 u64 *ret_di_blkno,
2417 struct ocfs2_dir_lookup_result *orphan_insert,
2418 struct ocfs2_alloc_context **ret_inode_ac)
2419{
2420 int ret;
2421 u64 di_blkno;
2422 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
2423 struct inode *orphan_dir = NULL;
2424 struct buffer_head *orphan_dir_bh = NULL;
2425 struct ocfs2_alloc_context *inode_ac = NULL;
2426
2427 ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh);
2428 if (ret < 0) {
2429 mlog_errno(ret);
2430 return ret;
2431 }
2432
2433 /* reserve an inode spot */
2434 ret = ocfs2_reserve_new_inode(osb, &inode_ac);
2435 if (ret < 0) {
2436 if (ret != -ENOSPC)
2437 mlog_errno(ret);
2438 goto out;
2439 }
2440
2441 ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac,
2442 &di_blkno);
2443 if (ret) {
2444 mlog_errno(ret);
2445 goto out;
2446 }
2447
2448 ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh,
Joseph Qi06ee5c72015-02-16 15:59:54 -08002449 di_blkno, orphan_name, orphan_insert,
2450 false);
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002451 if (ret < 0) {
2452 mlog_errno(ret);
2453 goto out;
2454 }
2455
2456out:
2457 if (ret == 0) {
2458 *ret_orphan_dir = orphan_dir;
2459 *ret_di_blkno = di_blkno;
2460 *ret_inode_ac = inode_ac;
2461 /*
2462 * orphan_name and orphan_insert are already up to
2463 * date via prepare_orphan_dir
2464 */
2465 } else {
2466 /* Unroll reserve_new_inode* */
2467 if (inode_ac)
2468 ocfs2_free_alloc_context(inode_ac);
2469
2470 /* Unroll orphan dir locking */
Al Viro59551022016-01-22 15:40:57 -05002471 inode_unlock(orphan_dir);
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002472 ocfs2_inode_unlock(orphan_dir, 1);
2473 iput(orphan_dir);
2474 }
2475
2476 brelse(orphan_dir_bh);
2477
Xiaowei.Hu7869e592013-06-12 14:04:41 -07002478 return ret;
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002479}
2480
Tao Mabc13d342009-08-18 11:44:14 +08002481int ocfs2_create_inode_in_orphan(struct inode *dir,
2482 int mode,
2483 struct inode **new_inode)
2484{
2485 int status, did_quota_inode = 0;
2486 struct inode *inode = NULL;
2487 struct inode *orphan_dir = NULL;
2488 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
Tao Mabc13d342009-08-18 11:44:14 +08002489 handle_t *handle = NULL;
2490 char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
2491 struct buffer_head *parent_di_bh = NULL;
2492 struct buffer_head *new_di_bh = NULL;
2493 struct ocfs2_alloc_context *inode_ac = NULL;
2494 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002495 u64 uninitialized_var(di_blkno), suballoc_loc;
2496 u16 suballoc_bit;
Tao Mabc13d342009-08-18 11:44:14 +08002497
2498 status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
2499 if (status < 0) {
2500 if (status != -ENOENT)
2501 mlog_errno(status);
2502 return status;
2503 }
2504
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002505 status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh,
2506 orphan_name, &orphan_dir,
2507 &di_blkno, &orphan_insert, &inode_ac);
Tao Mabc13d342009-08-18 11:44:14 +08002508 if (status < 0) {
2509 if (status != -ENOSPC)
2510 mlog_errno(status);
2511 goto leave;
2512 }
2513
2514 inode = ocfs2_get_init_inode(dir, mode);
Jan Kara9c89fe02015-07-14 13:36:02 +02002515 if (IS_ERR(inode)) {
2516 status = PTR_ERR(inode);
2517 inode = NULL;
Tao Mabc13d342009-08-18 11:44:14 +08002518 mlog_errno(status);
2519 goto leave;
2520 }
2521
2522 handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0));
2523 if (IS_ERR(handle)) {
2524 status = PTR_ERR(handle);
2525 handle = NULL;
2526 mlog_errno(status);
2527 goto leave;
2528 }
2529
Christoph Hellwig63936dd2010-03-03 09:05:01 -05002530 status = dquot_alloc_inode(inode);
2531 if (status)
Tao Mabc13d342009-08-18 11:44:14 +08002532 goto leave;
Tao Mabc13d342009-08-18 11:44:14 +08002533 did_quota_inode = 1;
2534
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002535 status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac,
2536 &suballoc_loc,
2537 &suballoc_bit, di_blkno);
Tao Mabc13d342009-08-18 11:44:14 +08002538 if (status < 0) {
2539 mlog_errno(status);
2540 goto leave;
2541 }
2542
Miklos Szeredi6d6b77f2011-10-28 14:13:28 +02002543 clear_nlink(inode);
Mark Fasheh97b8f4a2010-08-13 15:15:19 -07002544 /* do the real work now. */
2545 status = __ocfs2_mknod_locked(dir, inode,
2546 0, &new_di_bh, parent_di_bh, handle,
2547 inode_ac, di_blkno, suballoc_loc,
2548 suballoc_bit);
Tao Mabc13d342009-08-18 11:44:14 +08002549 if (status < 0) {
2550 mlog_errno(status);
2551 goto leave;
2552 }
2553
Tristan Ye3939fda2010-03-19 09:21:09 +08002554 status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name,
Joseph Qi06ee5c72015-02-16 15:59:54 -08002555 &orphan_insert, orphan_dir, false);
Tao Mabc13d342009-08-18 11:44:14 +08002556 if (status < 0) {
2557 mlog_errno(status);
2558 goto leave;
2559 }
2560
2561 /* get open lock so that only nodes can't remove it from orphan dir. */
2562 status = ocfs2_open_lock(inode);
2563 if (status < 0)
2564 mlog_errno(status);
2565
Tao Mac7d260a2009-12-18 10:24:54 +08002566 insert_inode_hash(inode);
Tao Mabc13d342009-08-18 11:44:14 +08002567leave:
2568 if (status < 0 && did_quota_inode)
Christoph Hellwig63936dd2010-03-03 09:05:01 -05002569 dquot_free_inode(inode);
Tao Mabc13d342009-08-18 11:44:14 +08002570 if (handle)
2571 ocfs2_commit_trans(osb, handle);
2572
2573 if (orphan_dir) {
2574 /* This was locked for us in ocfs2_prepare_orphan_dir() */
2575 ocfs2_inode_unlock(orphan_dir, 1);
Al Viro59551022016-01-22 15:40:57 -05002576 inode_unlock(orphan_dir);
Tao Mabc13d342009-08-18 11:44:14 +08002577 iput(orphan_dir);
2578 }
2579
Tao Mabc13d342009-08-18 11:44:14 +08002580 if ((status < 0) && inode) {
2581 clear_nlink(inode);
2582 iput(inode);
2583 }
2584
2585 if (inode_ac)
2586 ocfs2_free_alloc_context(inode_ac);
2587
2588 brelse(new_di_bh);
2589
2590 if (!status)
2591 *new_inode = inode;
2592
2593 ocfs2_free_dir_lookup_result(&orphan_insert);
2594
2595 ocfs2_inode_unlock(dir, 1);
2596 brelse(parent_di_bh);
2597 return status;
2598}
2599
Joseph Qi06ee5c72015-02-16 15:59:54 -08002600int ocfs2_add_inode_to_orphan(struct ocfs2_super *osb,
2601 struct inode *inode)
2602{
2603 char orphan_name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1];
2604 struct inode *orphan_dir_inode = NULL;
2605 struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
2606 struct buffer_head *di_bh = NULL;
2607 int status = 0;
2608 handle_t *handle = NULL;
Joseph Qi48139622015-02-16 16:00:12 -08002609 struct ocfs2_dinode *di = NULL;
Joseph Qi06ee5c72015-02-16 15:59:54 -08002610
2611 status = ocfs2_inode_lock(inode, &di_bh, 1);
2612 if (status < 0) {
2613 mlog_errno(status);
2614 goto bail;
2615 }
2616
Joseph Qi48139622015-02-16 16:00:12 -08002617 di = (struct ocfs2_dinode *) di_bh->b_data;
2618 /*
2619 * Another append dio crashed?
Joseph Qi512f62a2015-09-04 15:43:37 -07002620 * If so, manually recover it first.
Joseph Qi48139622015-02-16 16:00:12 -08002621 */
2622 if (unlikely(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))) {
Joseph Qi512f62a2015-09-04 15:43:37 -07002623 status = ocfs2_truncate_file(inode, di_bh, i_size_read(inode));
2624 if (status < 0) {
2625 if (status != -ENOSPC)
2626 mlog_errno(status);
2627 goto bail_unlock_inode;
2628 }
2629
2630 status = ocfs2_del_inode_from_orphan(osb, inode, di_bh, 0, 0);
2631 if (status < 0) {
2632 mlog_errno(status);
2633 goto bail_unlock_inode;
2634 }
Joseph Qi48139622015-02-16 16:00:12 -08002635 }
2636
Joseph Qi06ee5c72015-02-16 15:59:54 -08002637 status = ocfs2_prepare_orphan_dir(osb, &orphan_dir_inode,
2638 OCFS2_I(inode)->ip_blkno,
2639 orphan_name,
2640 &orphan_insert,
2641 true);
2642 if (status < 0) {
2643 mlog_errno(status);
2644 goto bail_unlock_inode;
2645 }
2646
2647 handle = ocfs2_start_trans(osb,
2648 OCFS2_INODE_ADD_TO_ORPHAN_CREDITS);
2649 if (IS_ERR(handle)) {
2650 status = PTR_ERR(handle);
2651 goto bail_unlock_orphan;
2652 }
2653
2654 status = ocfs2_orphan_add(osb, handle, inode, di_bh, orphan_name,
2655 &orphan_insert, orphan_dir_inode, true);
2656 if (status)
2657 mlog_errno(status);
2658
2659 ocfs2_commit_trans(osb, handle);
2660
2661bail_unlock_orphan:
2662 ocfs2_inode_unlock(orphan_dir_inode, 1);
Al Viro59551022016-01-22 15:40:57 -05002663 inode_unlock(orphan_dir_inode);
Joseph Qi06ee5c72015-02-16 15:59:54 -08002664 iput(orphan_dir_inode);
2665
2666 ocfs2_free_dir_lookup_result(&orphan_insert);
2667
2668bail_unlock_inode:
2669 ocfs2_inode_unlock(inode, 1);
2670 brelse(di_bh);
2671
2672bail:
2673 return status;
2674}
2675
2676int ocfs2_del_inode_from_orphan(struct ocfs2_super *osb,
Joseph Qicf1776a2015-06-24 16:54:59 -07002677 struct inode *inode, struct buffer_head *di_bh,
2678 int update_isize, loff_t end)
Joseph Qi06ee5c72015-02-16 15:59:54 -08002679{
2680 struct inode *orphan_dir_inode = NULL;
2681 struct buffer_head *orphan_dir_bh = NULL;
Joseph Qicf1776a2015-06-24 16:54:59 -07002682 struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
Joseph Qi06ee5c72015-02-16 15:59:54 -08002683 handle_t *handle = NULL;
2684 int status = 0;
2685
Joseph Qi06ee5c72015-02-16 15:59:54 -08002686 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
2687 ORPHAN_DIR_SYSTEM_INODE,
2688 le16_to_cpu(di->i_dio_orphaned_slot));
2689 if (!orphan_dir_inode) {
2690 status = -ENOENT;
2691 mlog_errno(status);
Joseph Qicf1776a2015-06-24 16:54:59 -07002692 goto bail;
Joseph Qi06ee5c72015-02-16 15:59:54 -08002693 }
2694
Al Viro59551022016-01-22 15:40:57 -05002695 inode_lock(orphan_dir_inode);
Joseph Qi06ee5c72015-02-16 15:59:54 -08002696 status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
2697 if (status < 0) {
Al Viro59551022016-01-22 15:40:57 -05002698 inode_unlock(orphan_dir_inode);
Joseph Qi06ee5c72015-02-16 15:59:54 -08002699 iput(orphan_dir_inode);
2700 mlog_errno(status);
Joseph Qicf1776a2015-06-24 16:54:59 -07002701 goto bail;
Joseph Qi06ee5c72015-02-16 15:59:54 -08002702 }
2703
2704 handle = ocfs2_start_trans(osb,
2705 OCFS2_INODE_DEL_FROM_ORPHAN_CREDITS);
2706 if (IS_ERR(handle)) {
2707 status = PTR_ERR(handle);
2708 goto bail_unlock_orphan;
2709 }
2710
2711 BUG_ON(!(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL)));
2712
2713 status = ocfs2_orphan_del(osb, handle, orphan_dir_inode,
2714 inode, orphan_dir_bh, true);
2715 if (status < 0) {
2716 mlog_errno(status);
2717 goto bail_commit;
2718 }
2719
2720 status = ocfs2_journal_access_di(handle,
2721 INODE_CACHE(inode),
2722 di_bh,
2723 OCFS2_JOURNAL_ACCESS_WRITE);
2724 if (status < 0) {
2725 mlog_errno(status);
2726 goto bail_commit;
2727 }
2728
2729 di->i_flags &= ~cpu_to_le32(OCFS2_DIO_ORPHANED_FL);
2730 di->i_dio_orphaned_slot = 0;
2731
2732 if (update_isize) {
2733 status = ocfs2_set_inode_size(handle, inode, di_bh, end);
2734 if (status)
2735 mlog_errno(status);
2736 } else
2737 ocfs2_journal_dirty(handle, di_bh);
2738
2739bail_commit:
2740 ocfs2_commit_trans(osb, handle);
2741
2742bail_unlock_orphan:
2743 ocfs2_inode_unlock(orphan_dir_inode, 1);
Al Viro59551022016-01-22 15:40:57 -05002744 inode_unlock(orphan_dir_inode);
Joseph Qi06ee5c72015-02-16 15:59:54 -08002745 brelse(orphan_dir_bh);
2746 iput(orphan_dir_inode);
2747
Joseph Qi06ee5c72015-02-16 15:59:54 -08002748bail:
2749 return status;
2750}
2751
Tao Mabc13d342009-08-18 11:44:14 +08002752int ocfs2_mv_orphaned_inode_to_new(struct inode *dir,
2753 struct inode *inode,
2754 struct dentry *dentry)
2755{
2756 int status = 0;
2757 struct buffer_head *parent_di_bh = NULL;
2758 handle_t *handle = NULL;
2759 struct ocfs2_super *osb = OCFS2_SB(dir->i_sb);
2760 struct ocfs2_dinode *dir_di, *di;
2761 struct inode *orphan_dir_inode = NULL;
2762 struct buffer_head *orphan_dir_bh = NULL;
2763 struct buffer_head *di_bh = NULL;
2764 struct ocfs2_dir_lookup_result lookup = { NULL, };
2765
Tao Ma8990e442011-02-23 22:45:26 +08002766 trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry,
2767 dentry->d_name.len, dentry->d_name.name,
2768 (unsigned long long)OCFS2_I(dir)->ip_blkno,
2769 (unsigned long long)OCFS2_I(inode)->ip_blkno);
Tao Mabc13d342009-08-18 11:44:14 +08002770
2771 status = ocfs2_inode_lock(dir, &parent_di_bh, 1);
2772 if (status < 0) {
2773 if (status != -ENOENT)
2774 mlog_errno(status);
2775 return status;
2776 }
2777
2778 dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data;
2779 if (!dir_di->i_links_count) {
2780 /* can't make a file in a deleted directory. */
2781 status = -ENOENT;
2782 goto leave;
2783 }
2784
2785 status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name,
2786 dentry->d_name.len);
2787 if (status)
2788 goto leave;
2789
2790 /* get a spot inside the dir. */
2791 status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh,
2792 dentry->d_name.name,
2793 dentry->d_name.len, &lookup);
2794 if (status < 0) {
2795 mlog_errno(status);
2796 goto leave;
2797 }
2798
2799 orphan_dir_inode = ocfs2_get_system_file_inode(osb,
2800 ORPHAN_DIR_SYSTEM_INODE,
2801 osb->slot_num);
2802 if (!orphan_dir_inode) {
Joseph Qi62f8b1f2015-04-14 15:43:24 -07002803 status = -ENOENT;
Tao Mabc13d342009-08-18 11:44:14 +08002804 mlog_errno(status);
2805 goto leave;
2806 }
2807
Al Viro59551022016-01-22 15:40:57 -05002808 inode_lock(orphan_dir_inode);
Tao Mabc13d342009-08-18 11:44:14 +08002809
2810 status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1);
2811 if (status < 0) {
2812 mlog_errno(status);
Al Viro59551022016-01-22 15:40:57 -05002813 inode_unlock(orphan_dir_inode);
Tao Mabc13d342009-08-18 11:44:14 +08002814 iput(orphan_dir_inode);
2815 goto leave;
2816 }
2817
2818 status = ocfs2_read_inode_block(inode, &di_bh);
2819 if (status < 0) {
2820 mlog_errno(status);
2821 goto orphan_unlock;
2822 }
2823
2824 handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb));
2825 if (IS_ERR(handle)) {
2826 status = PTR_ERR(handle);
2827 handle = NULL;
2828 mlog_errno(status);
2829 goto orphan_unlock;
2830 }
2831
2832 status = ocfs2_journal_access_di(handle, INODE_CACHE(inode),
2833 di_bh, OCFS2_JOURNAL_ACCESS_WRITE);
2834 if (status < 0) {
2835 mlog_errno(status);
2836 goto out_commit;
2837 }
2838
2839 status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode,
Joseph Qi06ee5c72015-02-16 15:59:54 -08002840 orphan_dir_bh, false);
Tao Mabc13d342009-08-18 11:44:14 +08002841 if (status < 0) {
2842 mlog_errno(status);
2843 goto out_commit;
2844 }
2845
2846 di = (struct ocfs2_dinode *)di_bh->b_data;
Joseph Qi13eb9882013-07-03 15:00:48 -07002847 di->i_flags &= ~cpu_to_le32(OCFS2_ORPHANED_FL);
Tao Mabc13d342009-08-18 11:44:14 +08002848 di->i_orphaned_slot = 0;
Miklos Szeredibfe86842011-10-28 14:13:29 +02002849 set_nlink(inode, 1);
Tao Ma10cf1a02009-12-18 10:24:55 +08002850 ocfs2_set_links_count(di, inode->i_nlink);
Darrick J. Wong6fdb7022014-04-03 14:47:08 -07002851 ocfs2_update_inode_fsync_trans(handle, inode, 1);
Tao Mabc13d342009-08-18 11:44:14 +08002852 ocfs2_journal_dirty(handle, di_bh);
2853
2854 status = ocfs2_add_entry(handle, dentry, inode,
2855 OCFS2_I(inode)->ip_blkno, parent_di_bh,
2856 &lookup);
2857 if (status < 0) {
2858 mlog_errno(status);
2859 goto out_commit;
2860 }
2861
2862 status = ocfs2_dentry_attach_lock(dentry, inode,
2863 OCFS2_I(dir)->ip_blkno);
2864 if (status) {
2865 mlog_errno(status);
2866 goto out_commit;
2867 }
2868
Tao Mabc13d342009-08-18 11:44:14 +08002869 d_instantiate(dentry, inode);
2870 status = 0;
2871out_commit:
2872 ocfs2_commit_trans(osb, handle);
2873orphan_unlock:
2874 ocfs2_inode_unlock(orphan_dir_inode, 1);
Al Viro59551022016-01-22 15:40:57 -05002875 inode_unlock(orphan_dir_inode);
Tao Mabc13d342009-08-18 11:44:14 +08002876 iput(orphan_dir_inode);
2877leave:
2878
2879 ocfs2_inode_unlock(dir, 1);
2880
2881 brelse(di_bh);
2882 brelse(parent_di_bh);
2883 brelse(orphan_dir_bh);
2884
2885 ocfs2_free_dir_lookup_result(&lookup);
2886
Tao Mac1e8d352011-03-07 16:43:21 +08002887 if (status)
2888 mlog_errno(status);
Tao Mabc13d342009-08-18 11:44:14 +08002889
2890 return status;
2891}
2892
Arjan van de Ven92e1d5b2007-02-12 00:55:39 -08002893const struct inode_operations ocfs2_dir_iops = {
Mark Fashehccd979b2005-12-15 14:31:24 -08002894 .create = ocfs2_create,
2895 .lookup = ocfs2_lookup,
2896 .link = ocfs2_link,
2897 .unlink = ocfs2_unlink,
2898 .rmdir = ocfs2_unlink,
2899 .symlink = ocfs2_symlink,
2900 .mkdir = ocfs2_mkdir,
2901 .mknod = ocfs2_mknod,
2902 .rename = ocfs2_rename,
2903 .setattr = ocfs2_setattr,
2904 .getattr = ocfs2_getattr,
Tiger Yangd38eb8d2006-11-27 09:59:21 +08002905 .permission = ocfs2_permission,
Tiger Yangcf1d6c72008-08-18 17:11:00 +08002906 .listxattr = ocfs2_listxattr,
Tristan Ye55f49462009-12-17 18:42:16 +08002907 .fiemap = ocfs2_fiemap,
Christoph Hellwig4e34e712011-07-23 17:37:31 +02002908 .get_acl = ocfs2_iop_get_acl,
Christoph Hellwig702e5bc2013-12-20 05:16:48 -08002909 .set_acl = ocfs2_iop_set_acl,
Mark Fashehccd979b2005-12-15 14:31:24 -08002910};