]>
Commit | Line | Data |
---|---|---|
ccd979bd MF |
1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * namei.c | |
5 | * | |
6 | * Create and rename file, directory, symlinks | |
7 | * | |
8 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
9 | * | |
10 | * Portions of this code from linux/fs/ext3/dir.c | |
11 | * | |
12 | * Copyright (C) 1992, 1993, 1994, 1995 | |
13 | * Remy Card (card@masi.ibp.fr) | |
14 | * Laboratoire MASI - Institut Blaise pascal | |
15 | * Universite Pierre et Marie Curie (Paris VI) | |
16 | * | |
17 | * from | |
18 | * | |
19 | * linux/fs/minix/dir.c | |
20 | * | |
21 | * Copyright (C) 1991, 1992 Linux Torvalds | |
22 | * | |
23 | * This program is free software; you can redistribute it and/or | |
24 | * modify it under the terms of the GNU General Public | |
25 | * License as published by the Free Software Foundation; either | |
26 | * version 2 of the License, or (at your option) any later version. | |
27 | * | |
28 | * This program is distributed in the hope that it will be useful, | |
29 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
30 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
31 | * General Public License for more details. | |
32 | * | |
33 | * You should have received a copy of the GNU General Public | |
34 | * License along with this program; if not, write to the | |
35 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
36 | * Boston, MA 021110-1307, USA. | |
37 | */ | |
38 | ||
39 | #include <linux/fs.h> | |
40 | #include <linux/types.h> | |
41 | #include <linux/slab.h> | |
42 | #include <linux/highmem.h> | |
a90714c1 | 43 | #include <linux/quotaops.h> |
ccd979bd | 44 | |
ccd979bd MF |
45 | #include <cluster/masklog.h> |
46 | ||
47 | #include "ocfs2.h" | |
48 | ||
49 | #include "alloc.h" | |
50 | #include "dcache.h" | |
51 | #include "dir.h" | |
52 | #include "dlmglue.h" | |
53 | #include "extent_map.h" | |
54 | #include "file.h" | |
55 | #include "inode.h" | |
56 | #include "journal.h" | |
57 | #include "namei.h" | |
58 | #include "suballoc.h" | |
aa958874 | 59 | #include "super.h" |
ccd979bd MF |
60 | #include "symlink.h" |
61 | #include "sysfile.h" | |
62 | #include "uptodate.h" | |
cf1d6c76 | 63 | #include "xattr.h" |
89c38bd0 | 64 | #include "acl.h" |
8990e44a | 65 | #include "ocfs2_trace.h" |
ccd979bd MF |
66 | |
67 | #include "buffer_head_io.h" | |
68 | ||
ccd979bd MF |
69 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
70 | struct inode *dir, | |
f5d36202 | 71 | struct inode *inode, |
ccd979bd MF |
72 | dev_t dev, |
73 | struct buffer_head **new_fe_bh, | |
74 | struct buffer_head *parent_fe_bh, | |
1fabe148 | 75 | handle_t *handle, |
ccd979bd MF |
76 | struct ocfs2_alloc_context *inode_ac); |
77 | ||
ccd979bd | 78 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, |
5098c27b | 79 | struct inode **ret_orphan_dir, |
19bd341f | 80 | u64 blkno, |
ccd979bd | 81 | char *name, |
4a12ca3a | 82 | struct ocfs2_dir_lookup_result *lookup); |
ccd979bd MF |
83 | |
84 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 85 | handle_t *handle, |
ccd979bd | 86 | struct inode *inode, |
3939fda4 | 87 | struct buffer_head *fe_bh, |
ccd979bd | 88 | char *name, |
4a12ca3a | 89 | struct ocfs2_dir_lookup_result *lookup, |
5098c27b | 90 | struct inode *orphan_dir_inode); |
ccd979bd MF |
91 | |
92 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 93 | handle_t *handle, |
ccd979bd MF |
94 | struct inode *inode, |
95 | const char *symname); | |
96 | ||
ccd979bd MF |
97 | /* An orphan dir name is an 8 byte value, printed as a hex string */ |
98 | #define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64))) | |
99 | ||
100 | static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry, | |
00cd8dd3 | 101 | unsigned int flags) |
ccd979bd MF |
102 | { |
103 | int status; | |
104 | u64 blkno; | |
ccd979bd MF |
105 | struct inode *inode = NULL; |
106 | struct dentry *ret; | |
ccd979bd MF |
107 | struct ocfs2_inode_info *oi; |
108 | ||
8990e44a TM |
109 | trace_ocfs2_lookup(dir, dentry, dentry->d_name.len, |
110 | dentry->d_name.name, | |
111 | (unsigned long long)OCFS2_I(dir)->ip_blkno, 0); | |
ccd979bd MF |
112 | |
113 | if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) { | |
114 | ret = ERR_PTR(-ENAMETOOLONG); | |
115 | goto bail; | |
116 | } | |
117 | ||
cb25797d | 118 | status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT); |
ccd979bd MF |
119 | if (status < 0) { |
120 | if (status != -ENOENT) | |
121 | mlog_errno(status); | |
122 | ret = ERR_PTR(status); | |
123 | goto bail; | |
124 | } | |
125 | ||
be94d117 MF |
126 | status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name, |
127 | dentry->d_name.len, &blkno); | |
ccd979bd MF |
128 | if (status < 0) |
129 | goto bail_add; | |
130 | ||
5fa0613e | 131 | inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0); |
ccd979bd | 132 | if (IS_ERR(inode)) { |
ccd979bd MF |
133 | ret = ERR_PTR(-EACCES); |
134 | goto bail_unlock; | |
135 | } | |
136 | ||
137 | oi = OCFS2_I(inode); | |
138 | /* Clear any orphaned state... If we were able to look up the | |
139 | * inode from a directory, it certainly can't be orphaned. We | |
140 | * might have the bad state from a node which intended to | |
141 | * orphan this inode but crashed before it could commit the | |
142 | * unlink. */ | |
143 | spin_lock(&oi->ip_lock); | |
144 | oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED; | |
ccd979bd MF |
145 | spin_unlock(&oi->ip_lock); |
146 | ||
147 | bail_add: | |
ccd979bd MF |
148 | ret = d_splice_alias(inode, dentry); |
149 | ||
379dfe9d MF |
150 | if (inode) { |
151 | /* | |
152 | * If d_splice_alias() finds a DCACHE_DISCONNECTED | |
153 | * dentry, it will d_move() it on top of ourse. The | |
154 | * return value will indicate this however, so in | |
155 | * those cases, we switch them around for the locking | |
156 | * code. | |
157 | * | |
158 | * NOTE: This dentry already has ->d_op set from | |
159 | * ocfs2_get_parent() and ocfs2_get_dentry() | |
160 | */ | |
d3556bab | 161 | if (!IS_ERR_OR_NULL(ret)) |
379dfe9d MF |
162 | dentry = ret; |
163 | ||
164 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
0027dd5b | 165 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
166 | if (status) { |
167 | mlog_errno(status); | |
168 | ret = ERR_PTR(status); | |
169 | goto bail_unlock; | |
170 | } | |
5e98d492 GR |
171 | } else |
172 | ocfs2_dentry_attach_gen(dentry); | |
379dfe9d | 173 | |
ccd979bd MF |
174 | bail_unlock: |
175 | /* Don't drop the cluster lock until *after* the d_add -- | |
176 | * unlink on another node will message us to remove that | |
177 | * dentry under this lock so otherwise we can race this with | |
34d024f8 | 178 | * the downconvert thread and have a stale dentry. */ |
e63aecb6 | 179 | ocfs2_inode_unlock(dir, 0); |
ccd979bd MF |
180 | |
181 | bail: | |
ccd979bd | 182 | |
8990e44a | 183 | trace_ocfs2_lookup_ret(ret); |
ccd979bd MF |
184 | |
185 | return ret; | |
186 | } | |
187 | ||
67697cbd | 188 | static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode) |
f5d36202 TY |
189 | { |
190 | struct inode *inode; | |
191 | ||
192 | inode = new_inode(dir->i_sb); | |
193 | if (!inode) { | |
194 | mlog(ML_ERROR, "new_inode failed!\n"); | |
195 | return NULL; | |
196 | } | |
197 | ||
198 | /* populate as many fields early on as possible - many of | |
199 | * these are used by the support functions here and in | |
200 | * callers. */ | |
201 | if (S_ISDIR(mode)) | |
bfe86848 | 202 | set_nlink(inode, 2); |
75fe0a24 | 203 | inode_init_owner(inode, dir, mode); |
871a2931 | 204 | dquot_initialize(inode); |
f5d36202 TY |
205 | return inode; |
206 | } | |
207 | ||
595297a8 | 208 | static void ocfs2_cleanup_add_entry_failure(struct ocfs2_super *osb, |
209 | struct dentry *dentry, struct inode *inode) | |
210 | { | |
211 | struct ocfs2_dentry_lock *dl = dentry->d_fsdata; | |
212 | ||
213 | ocfs2_simple_drop_lockres(osb, &dl->dl_lockres); | |
214 | ocfs2_lock_res_free(&dl->dl_lockres); | |
215 | BUG_ON(dl->dl_count != 1); | |
216 | spin_lock(&dentry_attach_lock); | |
217 | dentry->d_fsdata = NULL; | |
218 | spin_unlock(&dentry_attach_lock); | |
219 | kfree(dl); | |
220 | iput(inode); | |
221 | } | |
222 | ||
ccd979bd MF |
223 | static int ocfs2_mknod(struct inode *dir, |
224 | struct dentry *dentry, | |
1a67aafb | 225 | umode_t mode, |
ccd979bd MF |
226 | dev_t dev) |
227 | { | |
228 | int status = 0; | |
229 | struct buffer_head *parent_fe_bh = NULL; | |
1fabe148 | 230 | handle_t *handle = NULL; |
ccd979bd MF |
231 | struct ocfs2_super *osb; |
232 | struct ocfs2_dinode *dirfe; | |
233 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
234 | struct inode *inode = NULL; |
235 | struct ocfs2_alloc_context *inode_ac = NULL; | |
236 | struct ocfs2_alloc_context *data_ac = NULL; | |
9b7895ef | 237 | struct ocfs2_alloc_context *meta_ac = NULL; |
534eaddd | 238 | int want_clusters = 0; |
9b7895ef | 239 | int want_meta = 0; |
534eaddd TY |
240 | int xattr_credits = 0; |
241 | struct ocfs2_security_xattr_info si = { | |
242 | .enable = 1, | |
243 | }; | |
a90714c1 | 244 | int did_quota_inode = 0; |
4a12ca3a | 245 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
246 | sigset_t oldset; |
247 | int did_block_signals = 0; | |
702e5bc6 | 248 | struct posix_acl *default_acl = NULL, *acl = NULL; |
595297a8 | 249 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 250 | |
8990e44a TM |
251 | 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); | |
ccd979bd | 254 | |
871a2931 | 255 | dquot_initialize(dir); |
907f4554 | 256 | |
ccd979bd MF |
257 | /* get our super block */ |
258 | osb = OCFS2_SB(dir->i_sb); | |
259 | ||
e63aecb6 | 260 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
e3a82138 MF |
261 | if (status < 0) { |
262 | if (status != -ENOENT) | |
263 | mlog_errno(status); | |
264 | return status; | |
265 | } | |
266 | ||
198a1ca3 | 267 | if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) { |
a663e305 MF |
268 | status = -EMLINK; |
269 | goto leave; | |
270 | } | |
271 | ||
ccd979bd | 272 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
198a1ca3 | 273 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
274 | /* can't make a file in a deleted directory. */ |
275 | status = -ENOENT; | |
276 | goto leave; | |
277 | } | |
278 | ||
279 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
280 | dentry->d_name.len); | |
281 | if (status) | |
282 | goto leave; | |
283 | ||
284 | /* get a spot inside the dir. */ | |
285 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
286 | dentry->d_name.name, | |
4a12ca3a | 287 | dentry->d_name.len, &lookup); |
ccd979bd MF |
288 | if (status < 0) { |
289 | mlog_errno(status); | |
290 | goto leave; | |
291 | } | |
292 | ||
293 | /* reserve an inode spot */ | |
da5cbf2f | 294 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
295 | if (status < 0) { |
296 | if (status != -ENOSPC) | |
297 | mlog_errno(status); | |
298 | goto leave; | |
299 | } | |
300 | ||
f5d36202 TY |
301 | inode = ocfs2_get_init_inode(dir, mode); |
302 | if (!inode) { | |
303 | status = -ENOMEM; | |
304 | mlog_errno(status); | |
305 | goto leave; | |
306 | } | |
307 | ||
534eaddd | 308 | /* get security xattr */ |
2a7dba39 | 309 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
310 | if (status) { |
311 | if (status == -EOPNOTSUPP) | |
312 | si.enable = 0; | |
313 | else { | |
314 | mlog_errno(status); | |
315 | goto leave; | |
316 | } | |
317 | } | |
318 | ||
89c38bd0 TY |
319 | /* calculate meta data/clusters for setting security and acl xattr */ |
320 | status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode, | |
9b7895ef MF |
321 | &si, &want_clusters, |
322 | &xattr_credits, &want_meta); | |
89c38bd0 TY |
323 | if (status < 0) { |
324 | mlog_errno(status); | |
325 | goto leave; | |
ccd979bd MF |
326 | } |
327 | ||
534eaddd | 328 | /* Reserve a cluster if creating an extent based directory. */ |
9b7895ef | 329 | if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) { |
534eaddd TY |
330 | want_clusters += 1; |
331 | ||
9b7895ef | 332 | /* Dir indexing requires extra space as well */ |
4ed8a6bb | 333 | if (ocfs2_supports_indexed_dirs(osb)) |
9b7895ef | 334 | want_meta++; |
9b7895ef MF |
335 | } |
336 | ||
337 | status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac); | |
338 | if (status < 0) { | |
339 | if (status != -ENOSPC) | |
340 | mlog_errno(status); | |
341 | goto leave; | |
342 | } | |
343 | ||
534eaddd TY |
344 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); |
345 | if (status < 0) { | |
346 | if (status != -ENOSPC) | |
347 | mlog_errno(status); | |
348 | goto leave; | |
349 | } | |
350 | ||
702e5bc6 CH |
351 | status = posix_acl_create(dir, &mode, &default_acl, &acl); |
352 | if (status) { | |
353 | mlog_errno(status); | |
354 | goto leave; | |
355 | } | |
356 | ||
9b7895ef MF |
357 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, |
358 | S_ISDIR(mode), | |
359 | xattr_credits)); | |
ccd979bd MF |
360 | if (IS_ERR(handle)) { |
361 | status = PTR_ERR(handle); | |
362 | handle = NULL; | |
363 | mlog_errno(status); | |
364 | goto leave; | |
365 | } | |
366 | ||
547ba7c8 JB |
367 | /* Starting to change things, restart is no longer possible. */ |
368 | ocfs2_block_signals(&oldset); | |
369 | did_block_signals = 1; | |
370 | ||
63936dda CH |
371 | status = dquot_alloc_inode(inode); |
372 | if (status) | |
a90714c1 | 373 | goto leave; |
a90714c1 JK |
374 | did_quota_inode = 1; |
375 | ||
ccd979bd | 376 | /* do the real work now. */ |
19bd341f | 377 | status = ocfs2_mknod_locked(osb, dir, inode, dev, |
ccd979bd | 378 | &new_fe_bh, parent_fe_bh, handle, |
f5d36202 | 379 | inode_ac); |
ccd979bd MF |
380 | if (status < 0) { |
381 | mlog_errno(status); | |
382 | goto leave; | |
383 | } | |
384 | ||
385 | if (S_ISDIR(mode)) { | |
386 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, | |
9b7895ef | 387 | new_fe_bh, data_ac, meta_ac); |
ccd979bd MF |
388 | if (status < 0) { |
389 | mlog_errno(status); | |
390 | goto leave; | |
391 | } | |
392 | ||
0cf2f763 JB |
393 | status = ocfs2_journal_access_di(handle, INODE_CACHE(dir), |
394 | parent_fe_bh, | |
13723d00 | 395 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
396 | if (status < 0) { |
397 | mlog_errno(status); | |
398 | goto leave; | |
399 | } | |
198a1ca3 | 400 | ocfs2_add_links_count(dirfe, 1); |
ec20cec7 | 401 | ocfs2_journal_dirty(handle, parent_fe_bh); |
d8c76e6f | 402 | inc_nlink(dir); |
ccd979bd MF |
403 | } |
404 | ||
702e5bc6 CH |
405 | if (default_acl) { |
406 | status = ocfs2_set_acl(handle, inode, new_fe_bh, | |
407 | ACL_TYPE_DEFAULT, default_acl, | |
408 | meta_ac, data_ac); | |
409 | } | |
410 | if (!status && acl) { | |
411 | status = ocfs2_set_acl(handle, inode, new_fe_bh, | |
412 | ACL_TYPE_ACCESS, acl, | |
413 | meta_ac, data_ac); | |
414 | } | |
415 | ||
89c38bd0 TY |
416 | if (status < 0) { |
417 | mlog_errno(status); | |
418 | goto leave; | |
419 | } | |
420 | ||
534eaddd TY |
421 | if (si.enable) { |
422 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
9b7895ef | 423 | meta_ac, data_ac); |
534eaddd TY |
424 | if (status < 0) { |
425 | mlog_errno(status); | |
426 | goto leave; | |
427 | } | |
428 | } | |
429 | ||
a9743fcd MF |
430 | /* |
431 | * Do this before adding the entry to the directory. We add | |
432 | * also set d_op after success so that ->d_iput() will cleanup | |
433 | * the dentry lock even if ocfs2_add_entry() fails below. | |
434 | */ | |
435 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
436 | OCFS2_I(dir)->ip_blkno); | |
437 | if (status) { | |
ccd979bd MF |
438 | mlog_errno(status); |
439 | goto leave; | |
440 | } | |
441 | ||
595297a8 | 442 | dl = dentry->d_fsdata; |
443 | ||
a9743fcd MF |
444 | status = ocfs2_add_entry(handle, dentry, inode, |
445 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
446 | &lookup); | |
447 | if (status < 0) { | |
379dfe9d MF |
448 | mlog_errno(status); |
449 | goto leave; | |
450 | } | |
451 | ||
ccd979bd | 452 | insert_inode_hash(inode); |
ccd979bd MF |
453 | d_instantiate(dentry, inode); |
454 | status = 0; | |
455 | leave: | |
702e5bc6 CH |
456 | if (default_acl) |
457 | posix_acl_release(default_acl); | |
458 | if (acl) | |
459 | posix_acl_release(acl); | |
a90714c1 | 460 | if (status < 0 && did_quota_inode) |
63936dda | 461 | dquot_free_inode(inode); |
ccd979bd | 462 | if (handle) |
02dc1af4 | 463 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 464 | |
e63aecb6 | 465 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
466 | if (did_block_signals) |
467 | ocfs2_unblock_signals(&oldset); | |
e3a82138 | 468 | |
a81cb88b | 469 | brelse(new_fe_bh); |
a81cb88b | 470 | brelse(parent_fe_bh); |
534eaddd | 471 | kfree(si.value); |
ccd979bd | 472 | |
4a12ca3a MF |
473 | ocfs2_free_dir_lookup_result(&lookup); |
474 | ||
ccd979bd MF |
475 | if (inode_ac) |
476 | ocfs2_free_alloc_context(inode_ac); | |
477 | ||
478 | if (data_ac) | |
479 | ocfs2_free_alloc_context(data_ac); | |
480 | ||
9b7895ef MF |
481 | if (meta_ac) |
482 | ocfs2_free_alloc_context(meta_ac); | |
534eaddd | 483 | |
062d3403 LD |
484 | /* |
485 | * We should call iput after the i_mutex of the bitmap been | |
486 | * unlocked in ocfs2_free_alloc_context, or the | |
487 | * ocfs2_delete_inode will mutex_lock again. | |
488 | */ | |
489 | if ((status < 0) && inode) { | |
595297a8 | 490 | if (dl) |
491 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
492 | ||
062d3403 LD |
493 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
494 | clear_nlink(inode); | |
495 | iput(inode); | |
496 | } | |
497 | ||
c1e8d35e TM |
498 | if (status) |
499 | mlog_errno(status); | |
ccd979bd MF |
500 | |
501 | return status; | |
502 | } | |
503 | ||
021960ca MF |
504 | static int __ocfs2_mknod_locked(struct inode *dir, |
505 | struct inode *inode, | |
506 | dev_t dev, | |
507 | struct buffer_head **new_fe_bh, | |
508 | struct buffer_head *parent_fe_bh, | |
509 | handle_t *handle, | |
510 | struct ocfs2_alloc_context *inode_ac, | |
511 | u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit) | |
ccd979bd MF |
512 | { |
513 | int status = 0; | |
021960ca | 514 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
ccd979bd MF |
515 | struct ocfs2_dinode *fe = NULL; |
516 | struct ocfs2_extent_list *fel; | |
9b7895ef | 517 | u16 feat; |
2931cdcb | 518 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
ccd979bd | 519 | |
ccd979bd | 520 | *new_fe_bh = NULL; |
ccd979bd | 521 | |
ccd979bd MF |
522 | /* populate as many fields early on as possible - many of |
523 | * these are used by the support functions here and in | |
524 | * callers. */ | |
525 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
526 | OCFS2_I(inode)->ip_blkno = fe_blkno; | |
ccd979bd MF |
527 | spin_lock(&osb->osb_lock); |
528 | inode->i_generation = osb->s_next_generation++; | |
529 | spin_unlock(&osb->osb_lock); | |
530 | ||
531 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
532 | if (!*new_fe_bh) { | |
7391a294 | 533 | status = -ENOMEM; |
ccd979bd MF |
534 | mlog_errno(status); |
535 | goto leave; | |
536 | } | |
8cb471e8 | 537 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
ccd979bd | 538 | |
0cf2f763 JB |
539 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
540 | *new_fe_bh, | |
13723d00 | 541 | OCFS2_JOURNAL_ACCESS_CREATE); |
ccd979bd MF |
542 | if (status < 0) { |
543 | mlog_errno(status); | |
544 | goto leave; | |
545 | } | |
546 | ||
547 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
548 | memset(fe, 0, osb->sb->s_blocksize); | |
549 | ||
550 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
551 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
552 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
2b6cb576 | 553 | fe->i_suballoc_loc = cpu_to_le64(suballoc_loc); |
ccd979bd | 554 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); |
4d0ddb2c | 555 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
2c034176 EB |
556 | fe->i_uid = cpu_to_le32(i_uid_read(inode)); |
557 | fe->i_gid = cpu_to_le32(i_gid_read(inode)); | |
f5d36202 TY |
558 | fe->i_mode = cpu_to_le16(inode->i_mode); |
559 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 560 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
198a1ca3 MF |
561 | |
562 | ocfs2_set_links_count(fe, inode->i_nlink); | |
ccd979bd MF |
563 | |
564 | fe->i_last_eb_blk = 0; | |
565 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
13eb9887 | 566 | fe->i_flags |= cpu_to_le32(OCFS2_VALID_FL); |
ccd979bd MF |
567 | fe->i_atime = fe->i_ctime = fe->i_mtime = |
568 | cpu_to_le64(CURRENT_TIME.tv_sec); | |
569 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = | |
570 | cpu_to_le32(CURRENT_TIME.tv_nsec); | |
571 | fe->i_dtime = 0; | |
572 | ||
5b6a3a2b | 573 | /* |
9b7895ef MF |
574 | * If supported, directories start with inline data. If inline |
575 | * isn't supported, but indexing is, we start them as indexed. | |
5b6a3a2b | 576 | */ |
9b7895ef | 577 | feat = le16_to_cpu(fe->i_dyn_features); |
f5d36202 | 578 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
579 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
580 | ||
d9ae49d6 TY |
581 | fe->id2.i_data.id_count = cpu_to_le16( |
582 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); | |
5b6a3a2b MF |
583 | } else { |
584 | fel = &fe->id2.i_list; | |
585 | fel->l_tree_depth = 0; | |
586 | fel->l_next_free_rec = 0; | |
587 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
588 | } | |
ccd979bd | 589 | |
ec20cec7 | 590 | ocfs2_journal_dirty(handle, *new_fe_bh); |
ccd979bd | 591 | |
b657c95c | 592 | ocfs2_populate_inode(inode, fe, 1); |
0cf2f763 | 593 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
c271c5c2 SM |
594 | if (!ocfs2_mount_local(osb)) { |
595 | status = ocfs2_create_new_inode_locks(inode); | |
596 | if (status < 0) | |
597 | mlog_errno(status); | |
598 | } | |
ccd979bd | 599 | |
2931cdcb DW |
600 | oi->i_sync_tid = handle->h_transaction->t_tid; |
601 | oi->i_datasync_tid = handle->h_transaction->t_tid; | |
602 | ||
ccd979bd MF |
603 | leave: |
604 | if (status < 0) { | |
605 | if (*new_fe_bh) { | |
606 | brelse(*new_fe_bh); | |
607 | *new_fe_bh = NULL; | |
608 | } | |
ccd979bd MF |
609 | } |
610 | ||
c1e8d35e TM |
611 | if (status) |
612 | mlog_errno(status); | |
ccd979bd MF |
613 | return status; |
614 | } | |
615 | ||
021960ca MF |
616 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
617 | struct inode *dir, | |
618 | struct inode *inode, | |
619 | dev_t dev, | |
620 | struct buffer_head **new_fe_bh, | |
621 | struct buffer_head *parent_fe_bh, | |
622 | handle_t *handle, | |
623 | struct ocfs2_alloc_context *inode_ac) | |
624 | { | |
625 | int status = 0; | |
626 | u64 suballoc_loc, fe_blkno = 0; | |
627 | u16 suballoc_bit; | |
628 | ||
629 | *new_fe_bh = NULL; | |
630 | ||
631 | status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh, | |
632 | inode_ac, &suballoc_loc, | |
633 | &suballoc_bit, &fe_blkno); | |
634 | if (status < 0) { | |
635 | mlog_errno(status); | |
636 | return status; | |
637 | } | |
638 | ||
639 | return __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh, | |
640 | parent_fe_bh, handle, inode_ac, | |
641 | fe_blkno, suballoc_loc, suballoc_bit); | |
642 | } | |
643 | ||
ccd979bd MF |
644 | static int ocfs2_mkdir(struct inode *dir, |
645 | struct dentry *dentry, | |
18bb1db3 | 646 | umode_t mode) |
ccd979bd MF |
647 | { |
648 | int ret; | |
649 | ||
8990e44a TM |
650 | trace_ocfs2_mkdir(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
651 | OCFS2_I(dir)->ip_blkno, mode); | |
ccd979bd | 652 | ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0); |
c1e8d35e TM |
653 | if (ret) |
654 | mlog_errno(ret); | |
ccd979bd MF |
655 | |
656 | return ret; | |
657 | } | |
658 | ||
659 | static int ocfs2_create(struct inode *dir, | |
660 | struct dentry *dentry, | |
4acdaf27 | 661 | umode_t mode, |
ebfc3b49 | 662 | bool excl) |
ccd979bd MF |
663 | { |
664 | int ret; | |
665 | ||
8990e44a TM |
666 | trace_ocfs2_create(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
667 | (unsigned long long)OCFS2_I(dir)->ip_blkno, mode); | |
ccd979bd | 668 | ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0); |
c1e8d35e TM |
669 | if (ret) |
670 | mlog_errno(ret); | |
ccd979bd MF |
671 | |
672 | return ret; | |
673 | } | |
674 | ||
675 | static int ocfs2_link(struct dentry *old_dentry, | |
676 | struct inode *dir, | |
677 | struct dentry *dentry) | |
678 | { | |
1fabe148 | 679 | handle_t *handle; |
ccd979bd MF |
680 | struct inode *inode = old_dentry->d_inode; |
681 | int err; | |
682 | struct buffer_head *fe_bh = NULL; | |
683 | struct buffer_head *parent_fe_bh = NULL; | |
ccd979bd MF |
684 | struct ocfs2_dinode *fe = NULL; |
685 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
4a12ca3a | 686 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 | 687 | sigset_t oldset; |
0e048316 | 688 | u64 old_de_ino; |
ccd979bd | 689 | |
8990e44a TM |
690 | 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); | |
ccd979bd | 693 | |
123a9643 MF |
694 | if (S_ISDIR(inode->i_mode)) |
695 | return -EPERM; | |
ccd979bd | 696 | |
871a2931 | 697 | dquot_initialize(dir); |
907f4554 | 698 | |
cb25797d | 699 | err = ocfs2_inode_lock_nested(dir, &parent_fe_bh, 1, OI_LS_PARENT); |
ccd979bd MF |
700 | if (err < 0) { |
701 | if (err != -ENOENT) | |
702 | mlog_errno(err); | |
123a9643 | 703 | return err; |
ccd979bd MF |
704 | } |
705 | ||
0f62de2c TY |
706 | if (!dir->i_nlink) { |
707 | err = -ENOENT; | |
123a9643 | 708 | goto out; |
0f62de2c TY |
709 | } |
710 | ||
0e048316 X |
711 | err = ocfs2_lookup_ino_from_name(dir, old_dentry->d_name.name, |
712 | old_dentry->d_name.len, &old_de_ino); | |
713 | if (err) { | |
714 | err = -ENOENT; | |
715 | goto out; | |
716 | } | |
717 | ||
718 | /* | |
719 | * Check whether another node removed the source inode while we | |
720 | * were in the vfs. | |
721 | */ | |
722 | if (old_de_ino != OCFS2_I(inode)->ip_blkno) { | |
723 | err = -ENOENT; | |
724 | goto out; | |
725 | } | |
726 | ||
ccd979bd MF |
727 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
728 | dentry->d_name.len); | |
729 | if (err) | |
123a9643 | 730 | goto out; |
ccd979bd MF |
731 | |
732 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
733 | dentry->d_name.name, | |
4a12ca3a | 734 | dentry->d_name.len, &lookup); |
ccd979bd MF |
735 | if (err < 0) { |
736 | mlog_errno(err); | |
123a9643 | 737 | goto out; |
ccd979bd MF |
738 | } |
739 | ||
e63aecb6 | 740 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
741 | if (err < 0) { |
742 | if (err != -ENOENT) | |
743 | mlog_errno(err); | |
123a9643 | 744 | goto out; |
ccd979bd MF |
745 | } |
746 | ||
747 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
198a1ca3 | 748 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
ccd979bd | 749 | err = -EMLINK; |
123a9643 | 750 | goto out_unlock_inode; |
ccd979bd MF |
751 | } |
752 | ||
a90714c1 | 753 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
754 | if (IS_ERR(handle)) { |
755 | err = PTR_ERR(handle); | |
756 | handle = NULL; | |
757 | mlog_errno(err); | |
123a9643 | 758 | goto out_unlock_inode; |
ccd979bd MF |
759 | } |
760 | ||
547ba7c8 JB |
761 | /* Starting to change things, restart is no longer possible. */ |
762 | ocfs2_block_signals(&oldset); | |
763 | ||
0cf2f763 | 764 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 765 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
766 | if (err < 0) { |
767 | mlog_errno(err); | |
123a9643 | 768 | goto out_commit; |
ccd979bd MF |
769 | } |
770 | ||
d8c76e6f | 771 | inc_nlink(inode); |
ccd979bd | 772 | inode->i_ctime = CURRENT_TIME; |
198a1ca3 | 773 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
774 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
775 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
ec20cec7 | 776 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd MF |
777 | |
778 | err = ocfs2_add_entry(handle, dentry, inode, | |
779 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 780 | parent_fe_bh, &lookup); |
ccd979bd | 781 | if (err) { |
198a1ca3 | 782 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 783 | drop_nlink(inode); |
ccd979bd | 784 | mlog_errno(err); |
123a9643 | 785 | goto out_commit; |
ccd979bd MF |
786 | } |
787 | ||
0027dd5b | 788 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
789 | if (err) { |
790 | mlog_errno(err); | |
123a9643 | 791 | goto out_commit; |
379dfe9d MF |
792 | } |
793 | ||
7de9c6ee | 794 | ihold(inode); |
ccd979bd | 795 | d_instantiate(dentry, inode); |
123a9643 MF |
796 | |
797 | out_commit: | |
02dc1af4 | 798 | ocfs2_commit_trans(osb, handle); |
547ba7c8 | 799 | ocfs2_unblock_signals(&oldset); |
123a9643 | 800 | out_unlock_inode: |
e63aecb6 | 801 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
802 | |
803 | out: | |
e63aecb6 | 804 | ocfs2_inode_unlock(dir, 1); |
123a9643 | 805 | |
a81cb88b MF |
806 | brelse(fe_bh); |
807 | brelse(parent_fe_bh); | |
ccd979bd | 808 | |
4a12ca3a MF |
809 | ocfs2_free_dir_lookup_result(&lookup); |
810 | ||
c1e8d35e TM |
811 | if (err) |
812 | mlog_errno(err); | |
ccd979bd MF |
813 | |
814 | return err; | |
815 | } | |
816 | ||
379dfe9d MF |
817 | /* |
818 | * Takes and drops an exclusive lock on the given dentry. This will | |
819 | * force other nodes to drop it. | |
820 | */ | |
821 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
822 | { | |
823 | int ret; | |
824 | ||
825 | ret = ocfs2_dentry_lock(dentry, 1); | |
826 | if (ret) | |
827 | mlog_errno(ret); | |
828 | else | |
829 | ocfs2_dentry_unlock(dentry, 1); | |
830 | ||
831 | return ret; | |
832 | } | |
833 | ||
b5a8bb71 | 834 | static inline int ocfs2_inode_is_unlinkable(struct inode *inode) |
17ff7856 MF |
835 | { |
836 | if (S_ISDIR(inode->i_mode)) { | |
837 | if (inode->i_nlink == 2) | |
838 | return 1; | |
839 | return 0; | |
840 | } | |
841 | ||
842 | if (inode->i_nlink == 1) | |
843 | return 1; | |
844 | return 0; | |
845 | } | |
846 | ||
ccd979bd MF |
847 | static int ocfs2_unlink(struct inode *dir, |
848 | struct dentry *dentry) | |
849 | { | |
850 | int status; | |
30a4f5e8 | 851 | int child_locked = 0; |
b5a8bb71 | 852 | bool is_unlinkable = false; |
ccd979bd | 853 | struct inode *inode = dentry->d_inode; |
5098c27b | 854 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
855 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
856 | u64 blkno; | |
857 | struct ocfs2_dinode *fe = NULL; | |
858 | struct buffer_head *fe_bh = NULL; | |
859 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 860 | handle_t *handle = NULL; |
ccd979bd | 861 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
862 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
863 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd | 864 | |
8990e44a TM |
865 | trace_ocfs2_unlink(dir, dentry, dentry->d_name.len, |
866 | dentry->d_name.name, | |
867 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
868 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 869 | |
871a2931 | 870 | dquot_initialize(dir); |
907f4554 | 871 | |
ccd979bd MF |
872 | BUG_ON(dentry->d_parent->d_inode != dir); |
873 | ||
8990e44a | 874 | if (inode == osb->root_inode) |
30a4f5e8 | 875 | return -EPERM; |
ccd979bd | 876 | |
cb25797d JK |
877 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
878 | OI_LS_PARENT); | |
ccd979bd MF |
879 | if (status < 0) { |
880 | if (status != -ENOENT) | |
881 | mlog_errno(status); | |
30a4f5e8 | 882 | return status; |
ccd979bd MF |
883 | } |
884 | ||
885 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
886 | dentry->d_name.len, &blkno, dir, |
887 | &lookup); | |
ccd979bd MF |
888 | if (status < 0) { |
889 | if (status != -ENOENT) | |
890 | mlog_errno(status); | |
891 | goto leave; | |
892 | } | |
893 | ||
894 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
895 | status = -ENOENT; | |
896 | ||
8990e44a TM |
897 | trace_ocfs2_unlink_noent( |
898 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
899 | (unsigned long long)blkno, | |
900 | OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
901 | goto leave; |
902 | } | |
903 | ||
e63aecb6 | 904 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
905 | if (status < 0) { |
906 | if (status != -ENOENT) | |
907 | mlog_errno(status); | |
908 | goto leave; | |
909 | } | |
30a4f5e8 | 910 | child_locked = 1; |
ccd979bd MF |
911 | |
912 | if (S_ISDIR(inode->i_mode)) { | |
b80b549c | 913 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
ccd979bd MF |
914 | status = -ENOTEMPTY; |
915 | goto leave; | |
916 | } | |
917 | } | |
918 | ||
379dfe9d | 919 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 920 | if (status < 0) { |
34d024f8 | 921 | /* This remote delete should succeed under all normal |
ccd979bd MF |
922 | * circumstances. */ |
923 | mlog_errno(status); | |
924 | goto leave; | |
925 | } | |
926 | ||
b5a8bb71 | 927 | if (ocfs2_inode_is_unlinkable(inode)) { |
19bd341f TM |
928 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
929 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 930 | orphan_name, &orphan_insert); |
ccd979bd MF |
931 | if (status < 0) { |
932 | mlog_errno(status); | |
933 | goto leave; | |
934 | } | |
b5a8bb71 | 935 | is_unlinkable = true; |
ccd979bd MF |
936 | } |
937 | ||
a90714c1 | 938 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
939 | if (IS_ERR(handle)) { |
940 | status = PTR_ERR(handle); | |
941 | handle = NULL; | |
942 | mlog_errno(status); | |
943 | goto leave; | |
944 | } | |
945 | ||
0cf2f763 | 946 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 947 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
948 | if (status < 0) { |
949 | mlog_errno(status); | |
950 | goto leave; | |
951 | } | |
952 | ||
953 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
954 | ||
ccd979bd | 955 | /* delete the name from the parent dir */ |
4a12ca3a | 956 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
957 | if (status < 0) { |
958 | mlog_errno(status); | |
959 | goto leave; | |
960 | } | |
961 | ||
17ff7856 MF |
962 | if (S_ISDIR(inode->i_mode)) |
963 | drop_nlink(inode); | |
964 | drop_nlink(inode); | |
198a1ca3 | 965 | ocfs2_set_links_count(fe, inode->i_nlink); |
ec20cec7 | 966 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd | 967 | |
592282cf MF |
968 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; |
969 | if (S_ISDIR(inode->i_mode)) | |
17ff7856 | 970 | drop_nlink(dir); |
592282cf MF |
971 | |
972 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
973 | if (status < 0) { | |
974 | mlog_errno(status); | |
975 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 976 | inc_nlink(dir); |
b5a8bb71 YL |
977 | goto leave; |
978 | } | |
979 | ||
980 | if (is_unlinkable) { | |
981 | status = ocfs2_orphan_add(osb, handle, inode, fe_bh, | |
982 | orphan_name, &orphan_insert, orphan_dir); | |
983 | if (status < 0) | |
984 | mlog_errno(status); | |
ccd979bd MF |
985 | } |
986 | ||
987 | leave: | |
ccd979bd | 988 | if (handle) |
02dc1af4 | 989 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 990 | |
30a4f5e8 | 991 | if (child_locked) |
e63aecb6 | 992 | ocfs2_inode_unlock(inode, 1); |
30a4f5e8 | 993 | |
e63aecb6 | 994 | ocfs2_inode_unlock(dir, 1); |
30a4f5e8 | 995 | |
5098c27b MF |
996 | if (orphan_dir) { |
997 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 998 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
999 | mutex_unlock(&orphan_dir->i_mutex); |
1000 | iput(orphan_dir); | |
1001 | } | |
1002 | ||
a81cb88b | 1003 | brelse(fe_bh); |
a81cb88b | 1004 | brelse(parent_node_bh); |
4a12ca3a MF |
1005 | |
1006 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1007 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd | 1008 | |
f5b25855 | 1009 | if (status && (status != -ENOTEMPTY) && (status != -ENOENT)) |
c1e8d35e | 1010 | mlog_errno(status); |
ccd979bd MF |
1011 | |
1012 | return status; | |
1013 | } | |
1014 | ||
f7a14f32 YJ |
1015 | static int ocfs2_check_if_ancestor(struct ocfs2_super *osb, |
1016 | u64 src_inode_no, u64 dest_inode_no) | |
1017 | { | |
1018 | int ret = 0, i = 0; | |
1019 | u64 parent_inode_no = 0; | |
1020 | u64 child_inode_no = src_inode_no; | |
1021 | struct inode *child_inode; | |
1022 | ||
1023 | #define MAX_LOOKUP_TIMES 32 | |
1024 | while (1) { | |
1025 | child_inode = ocfs2_iget(osb, child_inode_no, 0, 0); | |
1026 | if (IS_ERR(child_inode)) { | |
1027 | ret = PTR_ERR(child_inode); | |
1028 | break; | |
1029 | } | |
1030 | ||
1031 | ret = ocfs2_inode_lock(child_inode, NULL, 0); | |
1032 | if (ret < 0) { | |
1033 | iput(child_inode); | |
1034 | if (ret != -ENOENT) | |
1035 | mlog_errno(ret); | |
1036 | break; | |
1037 | } | |
1038 | ||
1039 | ret = ocfs2_lookup_ino_from_name(child_inode, "..", 2, | |
1040 | &parent_inode_no); | |
1041 | ocfs2_inode_unlock(child_inode, 0); | |
1042 | iput(child_inode); | |
1043 | if (ret < 0) { | |
1044 | ret = -ENOENT; | |
1045 | break; | |
1046 | } | |
1047 | ||
1048 | if (parent_inode_no == dest_inode_no) { | |
1049 | ret = 1; | |
1050 | break; | |
1051 | } | |
1052 | ||
1053 | if (parent_inode_no == osb->root_inode->i_ino) { | |
1054 | ret = 0; | |
1055 | break; | |
1056 | } | |
1057 | ||
1058 | child_inode_no = parent_inode_no; | |
1059 | ||
1060 | if (++i >= MAX_LOOKUP_TIMES) { | |
1061 | mlog(ML_NOTICE, "max lookup times reached, filesystem " | |
1062 | "may have nested directories, " | |
1063 | "src inode: %llu, dest inode: %llu.\n", | |
1064 | (unsigned long long)src_inode_no, | |
1065 | (unsigned long long)dest_inode_no); | |
1066 | ret = 0; | |
1067 | break; | |
1068 | } | |
1069 | } | |
1070 | ||
1071 | return ret; | |
1072 | } | |
1073 | ||
ccd979bd MF |
1074 | /* |
1075 | * The only place this should be used is rename! | |
1076 | * if they have the same id, then the 1st one is the only one locked. | |
1077 | */ | |
1078 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
1079 | struct buffer_head **bh1, |
1080 | struct inode *inode1, | |
1081 | struct buffer_head **bh2, | |
1082 | struct inode *inode2) | |
1083 | { | |
1084 | int status; | |
f7a14f32 | 1085 | int inode1_is_ancestor, inode2_is_ancestor; |
ccd979bd MF |
1086 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); |
1087 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
1088 | struct buffer_head **tmpbh; | |
1089 | struct inode *tmpinode; | |
1090 | ||
8990e44a TM |
1091 | trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno, |
1092 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 1093 | |
ccd979bd MF |
1094 | if (*bh1) |
1095 | *bh1 = NULL; | |
1096 | if (*bh2) | |
1097 | *bh2 = NULL; | |
1098 | ||
f7a14f32 YJ |
1099 | /* we always want to lock the one with the lower lockid first. |
1100 | * and if they are nested, we lock ancestor first */ | |
ccd979bd | 1101 | if (oi1->ip_blkno != oi2->ip_blkno) { |
f7a14f32 YJ |
1102 | inode1_is_ancestor = ocfs2_check_if_ancestor(osb, oi2->ip_blkno, |
1103 | oi1->ip_blkno); | |
1104 | if (inode1_is_ancestor < 0) { | |
1105 | status = inode1_is_ancestor; | |
1106 | goto bail; | |
1107 | } | |
1108 | ||
1109 | inode2_is_ancestor = ocfs2_check_if_ancestor(osb, oi1->ip_blkno, | |
1110 | oi2->ip_blkno); | |
1111 | if (inode2_is_ancestor < 0) { | |
1112 | status = inode2_is_ancestor; | |
1113 | goto bail; | |
1114 | } | |
1115 | ||
1116 | if ((inode1_is_ancestor == 1) || | |
1117 | (oi1->ip_blkno < oi2->ip_blkno && | |
1118 | inode2_is_ancestor == 0)) { | |
ccd979bd | 1119 | /* switch id1 and id2 around */ |
ccd979bd MF |
1120 | tmpbh = bh2; |
1121 | bh2 = bh1; | |
1122 | bh1 = tmpbh; | |
1123 | ||
1124 | tmpinode = inode2; | |
1125 | inode2 = inode1; | |
1126 | inode1 = tmpinode; | |
1127 | } | |
1128 | /* lock id2 */ | |
cb25797d JK |
1129 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
1130 | OI_LS_RENAME1); | |
ccd979bd MF |
1131 | if (status < 0) { |
1132 | if (status != -ENOENT) | |
1133 | mlog_errno(status); | |
1134 | goto bail; | |
1135 | } | |
1136 | } | |
8d5596c6 | 1137 | |
ccd979bd | 1138 | /* lock id1 */ |
cb25797d | 1139 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, OI_LS_RENAME2); |
ccd979bd | 1140 | if (status < 0) { |
8d5596c6 MF |
1141 | /* |
1142 | * An error return must mean that no cluster locks | |
1143 | * were held on function exit. | |
1144 | */ | |
1e6d9153 | 1145 | if (oi1->ip_blkno != oi2->ip_blkno) { |
e63aecb6 | 1146 | ocfs2_inode_unlock(inode2, 1); |
1e6d9153 TM |
1147 | brelse(*bh2); |
1148 | *bh2 = NULL; | |
1149 | } | |
8d5596c6 | 1150 | |
ccd979bd MF |
1151 | if (status != -ENOENT) |
1152 | mlog_errno(status); | |
ccd979bd | 1153 | } |
8d5596c6 | 1154 | |
8990e44a TM |
1155 | trace_ocfs2_double_lock_end( |
1156 | (unsigned long long)OCFS2_I(inode1)->ip_blkno, | |
1157 | (unsigned long long)OCFS2_I(inode2)->ip_blkno); | |
1158 | ||
ccd979bd | 1159 | bail: |
c1e8d35e TM |
1160 | if (status) |
1161 | mlog_errno(status); | |
ccd979bd MF |
1162 | return status; |
1163 | } | |
1164 | ||
8d5596c6 MF |
1165 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
1166 | { | |
e63aecb6 | 1167 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
1168 | |
1169 | if (inode1 != inode2) | |
e63aecb6 | 1170 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1171 | } |
1172 | ||
ccd979bd MF |
1173 | static int ocfs2_rename(struct inode *old_dir, |
1174 | struct dentry *old_dentry, | |
1175 | struct inode *new_dir, | |
1176 | struct dentry *new_dentry) | |
1177 | { | |
4a12ca3a MF |
1178 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1179 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
ccd979bd MF |
1180 | struct inode *old_inode = old_dentry->d_inode; |
1181 | struct inode *new_inode = new_dentry->d_inode; | |
5098c27b | 1182 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1183 | struct ocfs2_dinode *newfe = NULL; |
1184 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
ccd979bd | 1185 | struct buffer_head *newfe_bh = NULL; |
592282cf | 1186 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd | 1187 | struct ocfs2_super *osb = NULL; |
5b6a3a2b | 1188 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1189 | handle_t *handle = NULL; |
ccd979bd MF |
1190 | struct buffer_head *old_dir_bh = NULL; |
1191 | struct buffer_head *new_dir_bh = NULL; | |
847c9db5 | 1192 | u32 old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1193 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1194 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1195 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1196 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1197 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1198 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
5fb1beb0 | 1199 | bool should_add_orphan = false; |
ccd979bd MF |
1200 | |
1201 | /* At some point it might be nice to break this function up a | |
1202 | * bit. */ | |
1203 | ||
8990e44a TM |
1204 | trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry, |
1205 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1206 | new_dentry->d_name.len, new_dentry->d_name.name); | |
ccd979bd | 1207 | |
871a2931 CH |
1208 | dquot_initialize(old_dir); |
1209 | dquot_initialize(new_dir); | |
907f4554 | 1210 | |
ccd979bd MF |
1211 | osb = OCFS2_SB(old_dir->i_sb); |
1212 | ||
1213 | if (new_inode) { | |
1214 | if (!igrab(new_inode)) | |
1215 | BUG(); | |
1216 | } | |
1217 | ||
1b3c3714 | 1218 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1219 | * a/b/c |
1220 | * a/d | |
1221 | * a,b,c, and d are all directories. | |
1222 | * | |
1223 | * from cwd of 'a' on both nodes: | |
1224 | * node1: mv b/c d | |
1225 | * node2: mv d b/c | |
1226 | * | |
1227 | * And that's why, just like the VFS, we need a file system | |
1228 | * rename lock. */ | |
5dabd695 | 1229 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1230 | status = ocfs2_rename_lock(osb); |
1231 | if (status < 0) { | |
1232 | mlog_errno(status); | |
1233 | goto bail; | |
1234 | } | |
1235 | rename_lock = 1; | |
f7a14f32 YJ |
1236 | |
1237 | /* here we cannot guarantee the inodes haven't just been | |
1238 | * changed, so check if they are nested again */ | |
1239 | status = ocfs2_check_if_ancestor(osb, new_dir->i_ino, | |
1240 | old_inode->i_ino); | |
1241 | if (status < 0) { | |
1242 | mlog_errno(status); | |
1243 | goto bail; | |
1244 | } else if (status == 1) { | |
1245 | status = -EPERM; | |
1246 | trace_ocfs2_rename_not_permitted( | |
1247 | (unsigned long long)old_inode->i_ino, | |
1248 | (unsigned long long)new_dir->i_ino); | |
1249 | goto bail; | |
1250 | } | |
ccd979bd MF |
1251 | } |
1252 | ||
ccd979bd | 1253 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 MF |
1254 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
1255 | &new_dir_bh, new_dir); | |
ccd979bd MF |
1256 | if (status < 0) { |
1257 | mlog_errno(status); | |
1258 | goto bail; | |
1259 | } | |
8d5596c6 | 1260 | parents_locked = 1; |
ccd979bd MF |
1261 | |
1262 | /* make sure both dirs have bhs | |
1263 | * get an extra ref on old_dir_bh if old==new */ | |
1264 | if (!new_dir_bh) { | |
1265 | if (old_dir_bh) { | |
1266 | new_dir_bh = old_dir_bh; | |
1267 | get_bh(new_dir_bh); | |
1268 | } else { | |
1269 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1270 | status = -EIO; | |
1271 | goto bail; | |
1272 | } | |
1273 | } | |
1274 | ||
379dfe9d | 1275 | /* |
592282cf | 1276 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1277 | * also ensures that the downconvert thread on other nodes |
1278 | * won't have to concurrently downconvert the inode and the | |
1279 | * dentry locks. | |
379dfe9d | 1280 | */ |
cb25797d JK |
1281 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
1282 | OI_LS_PARENT); | |
379dfe9d MF |
1283 | if (status < 0) { |
1284 | if (status != -ENOENT) | |
ccd979bd | 1285 | mlog_errno(status); |
379dfe9d MF |
1286 | goto bail; |
1287 | } | |
8d5596c6 | 1288 | old_child_locked = 1; |
ccd979bd | 1289 | |
379dfe9d MF |
1290 | status = ocfs2_remote_dentry_delete(old_dentry); |
1291 | if (status < 0) { | |
1292 | mlog_errno(status); | |
1293 | goto bail; | |
1294 | } | |
1295 | ||
1296 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1297 | u64 old_inode_parent; |
1298 | ||
4a12ca3a | 1299 | update_dot_dot = 1; |
38760e24 | 1300 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1301 | old_inode, |
1302 | &old_inode_dot_dot_res); | |
38760e24 MF |
1303 | if (status) { |
1304 | status = -EIO; | |
ccd979bd | 1305 | goto bail; |
38760e24 | 1306 | } |
ccd979bd | 1307 | |
38760e24 MF |
1308 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1309 | status = -EIO; | |
ccd979bd | 1310 | goto bail; |
38760e24 MF |
1311 | } |
1312 | ||
1313 | if (!new_inode && new_dir != old_dir && | |
198a1ca3 | 1314 | new_dir->i_nlink >= ocfs2_link_max(osb)) { |
38760e24 | 1315 | status = -EMLINK; |
ccd979bd | 1316 | goto bail; |
38760e24 | 1317 | } |
ccd979bd MF |
1318 | } |
1319 | ||
5b6a3a2b MF |
1320 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1321 | old_dentry->d_name.len, | |
1322 | &old_de_ino); | |
1323 | if (status) { | |
1324 | status = -ENOENT; | |
ccd979bd | 1325 | goto bail; |
5b6a3a2b | 1326 | } |
ccd979bd MF |
1327 | |
1328 | /* | |
1329 | * Check for inode number is _not_ due to possible IO errors. | |
1330 | * We might rmdir the source, keep it as pwd of some process | |
1331 | * and merrily kill the link to whatever was created under the | |
1332 | * same name. Goodbye sticky bit ;-< | |
1333 | */ | |
5b6a3a2b MF |
1334 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1335 | status = -ENOENT; | |
ccd979bd | 1336 | goto bail; |
5b6a3a2b | 1337 | } |
ccd979bd MF |
1338 | |
1339 | /* check if the target already exists (in which case we need | |
1340 | * to delete it */ | |
1341 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1342 | new_dentry->d_name.len, | |
4a12ca3a MF |
1343 | &newfe_blkno, new_dir, |
1344 | &target_lookup_res); | |
ccd979bd MF |
1345 | /* The only error we allow here is -ENOENT because the new |
1346 | * file not existing is perfectly valid. */ | |
1347 | if ((status < 0) && (status != -ENOENT)) { | |
1348 | /* If we cannot find the file specified we should just */ | |
1349 | /* return the error... */ | |
1350 | mlog_errno(status); | |
1351 | goto bail; | |
1352 | } | |
4a12ca3a MF |
1353 | if (status == 0) |
1354 | target_exists = 1; | |
ccd979bd | 1355 | |
4a12ca3a | 1356 | if (!target_exists && new_inode) { |
e325a88f SE |
1357 | /* |
1358 | * Target was unlinked by another node while we were | |
1359 | * waiting to get to ocfs2_rename(). There isn't | |
1360 | * anything we can do here to help the situation, so | |
1361 | * bubble up the appropriate error. | |
1362 | */ | |
1363 | status = -ENOENT; | |
1364 | goto bail; | |
1365 | } | |
ccd979bd MF |
1366 | |
1367 | /* In case we need to overwrite an existing file, we blow it | |
1368 | * away first */ | |
4a12ca3a | 1369 | if (target_exists) { |
ccd979bd MF |
1370 | /* VFS didn't think there existed an inode here, but |
1371 | * someone else in the cluster must have raced our | |
1372 | * rename to create one. Today we error cleanly, in | |
1373 | * the future we should consider calling iget to build | |
1374 | * a new struct inode for this entry. */ | |
1375 | if (!new_inode) { | |
1376 | status = -EACCES; | |
1377 | ||
8990e44a TM |
1378 | trace_ocfs2_rename_target_exists(new_dentry->d_name.len, |
1379 | new_dentry->d_name.name); | |
ccd979bd MF |
1380 | goto bail; |
1381 | } | |
1382 | ||
1383 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1384 | status = -EACCES; | |
1385 | ||
8990e44a | 1386 | trace_ocfs2_rename_disagree( |
b0697053 MF |
1387 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, |
1388 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1389 | OCFS2_I(new_inode)->ip_flags); |
1390 | goto bail; | |
1391 | } | |
1392 | ||
e63aecb6 | 1393 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1394 | if (status < 0) { |
1395 | if (status != -ENOENT) | |
1396 | mlog_errno(status); | |
1397 | goto bail; | |
1398 | } | |
8d5596c6 | 1399 | new_child_locked = 1; |
ccd979bd | 1400 | |
379dfe9d | 1401 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1402 | if (status < 0) { |
1403 | mlog_errno(status); | |
1404 | goto bail; | |
1405 | } | |
1406 | ||
1407 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1408 | ||
8990e44a | 1409 | trace_ocfs2_rename_over_existing( |
b0697053 | 1410 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1411 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1412 | ||
1413 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1414 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
19bd341f TM |
1415 | OCFS2_I(new_inode)->ip_blkno, |
1416 | orphan_name, &orphan_insert); | |
ccd979bd MF |
1417 | if (status < 0) { |
1418 | mlog_errno(status); | |
1419 | goto bail; | |
1420 | } | |
5fb1beb0 | 1421 | should_add_orphan = true; |
ccd979bd MF |
1422 | } |
1423 | } else { | |
1424 | BUG_ON(new_dentry->d_parent->d_inode != new_dir); | |
1425 | ||
1426 | status = ocfs2_check_dir_for_entry(new_dir, | |
1427 | new_dentry->d_name.name, | |
1428 | new_dentry->d_name.len); | |
1429 | if (status) | |
1430 | goto bail; | |
1431 | ||
1432 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1433 | new_dentry->d_name.name, | |
1434 | new_dentry->d_name.len, | |
4a12ca3a | 1435 | &target_insert); |
ccd979bd MF |
1436 | if (status < 0) { |
1437 | mlog_errno(status); | |
1438 | goto bail; | |
1439 | } | |
1440 | } | |
1441 | ||
a90714c1 | 1442 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1443 | if (IS_ERR(handle)) { |
1444 | status = PTR_ERR(handle); | |
1445 | handle = NULL; | |
1446 | mlog_errno(status); | |
1447 | goto bail; | |
1448 | } | |
1449 | ||
4a12ca3a | 1450 | if (target_exists) { |
ccd979bd | 1451 | if (S_ISDIR(new_inode->i_mode)) { |
b80b549c MF |
1452 | if (new_inode->i_nlink != 2 || |
1453 | !ocfs2_empty_dir(new_inode)) { | |
ccd979bd MF |
1454 | status = -ENOTEMPTY; |
1455 | goto bail; | |
1456 | } | |
1457 | } | |
0cf2f763 JB |
1458 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
1459 | newfe_bh, | |
13723d00 | 1460 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1461 | if (status < 0) { |
1462 | mlog_errno(status); | |
1463 | goto bail; | |
1464 | } | |
1465 | ||
ccd979bd | 1466 | /* change the dirent to point to the correct inode */ |
4a12ca3a MF |
1467 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1468 | old_inode); | |
ccd979bd MF |
1469 | if (status < 0) { |
1470 | mlog_errno(status); | |
1471 | goto bail; | |
1472 | } | |
ccd979bd | 1473 | new_dir->i_version++; |
ccd979bd MF |
1474 | |
1475 | if (S_ISDIR(new_inode->i_mode)) | |
198a1ca3 | 1476 | ocfs2_set_links_count(newfe, 0); |
ccd979bd | 1477 | else |
198a1ca3 | 1478 | ocfs2_add_links_count(newfe, -1); |
ec20cec7 | 1479 | ocfs2_journal_dirty(handle, newfe_bh); |
5fb1beb0 | 1480 | if (should_add_orphan) { |
1481 | status = ocfs2_orphan_add(osb, handle, new_inode, | |
1482 | newfe_bh, orphan_name, | |
1483 | &orphan_insert, orphan_dir); | |
1484 | if (status < 0) { | |
1485 | mlog_errno(status); | |
1486 | goto bail; | |
1487 | } | |
1488 | } | |
ccd979bd MF |
1489 | } else { |
1490 | /* if the name was not found in new_dir, add it now */ | |
1491 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1492 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1493 | new_dir_bh, &target_insert); |
ccd979bd MF |
1494 | } |
1495 | ||
1496 | old_inode->i_ctime = CURRENT_TIME; | |
1497 | mark_inode_dirty(old_inode); | |
480214d7 | 1498 | |
0cf2f763 JB |
1499 | status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), |
1500 | old_inode_bh, | |
13723d00 | 1501 | OCFS2_JOURNAL_ACCESS_WRITE); |
480214d7 SM |
1502 | if (status >= 0) { |
1503 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1504 | ||
1505 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); | |
1506 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); | |
ec20cec7 | 1507 | ocfs2_journal_dirty(handle, old_inode_bh); |
480214d7 SM |
1508 | } else |
1509 | mlog_errno(status); | |
ccd979bd | 1510 | |
5b6a3a2b MF |
1511 | /* |
1512 | * Now that the name has been added to new_dir, remove the old name. | |
1513 | * | |
1514 | * We don't keep any directory entry context around until now | |
1515 | * because the insert might have changed the type of directory | |
1516 | * we're dealing with. | |
1517 | */ | |
4a12ca3a MF |
1518 | status = ocfs2_find_entry(old_dentry->d_name.name, |
1519 | old_dentry->d_name.len, old_dir, | |
1520 | &old_entry_lookup); | |
1521 | if (status) | |
5b6a3a2b | 1522 | goto bail; |
5b6a3a2b | 1523 | |
4a12ca3a | 1524 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
ccd979bd MF |
1525 | if (status < 0) { |
1526 | mlog_errno(status); | |
1527 | goto bail; | |
1528 | } | |
1529 | ||
1530 | if (new_inode) { | |
6d6b77f1 | 1531 | drop_nlink(new_inode); |
ccd979bd MF |
1532 | new_inode->i_ctime = CURRENT_TIME; |
1533 | } | |
1534 | old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME; | |
4a12ca3a MF |
1535 | |
1536 | if (update_dot_dot) { | |
1537 | status = ocfs2_update_entry(old_inode, handle, | |
1538 | &old_inode_dot_dot_res, new_dir); | |
6d6b77f1 | 1539 | drop_nlink(old_dir); |
ccd979bd | 1540 | if (new_inode) { |
6d6b77f1 | 1541 | drop_nlink(new_inode); |
ccd979bd | 1542 | } else { |
d8c76e6f | 1543 | inc_nlink(new_dir); |
ccd979bd MF |
1544 | mark_inode_dirty(new_dir); |
1545 | } | |
1546 | } | |
1547 | mark_inode_dirty(old_dir); | |
592282cf MF |
1548 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1549 | if (new_inode) { | |
ccd979bd | 1550 | mark_inode_dirty(new_inode); |
592282cf MF |
1551 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1552 | } | |
ccd979bd | 1553 | |
592282cf MF |
1554 | if (old_dir != new_dir) { |
1555 | /* Keep the same times on both directories.*/ | |
1556 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; | |
1557 | ||
1558 | /* | |
1559 | * This will also pick up the i_nlink change from the | |
1560 | * block above. | |
1561 | */ | |
1562 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1563 | } | |
ccd979bd MF |
1564 | |
1565 | if (old_dir_nlink != old_dir->i_nlink) { | |
1566 | if (!old_dir_bh) { | |
1567 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1568 | "%llu from %d to %d but bh is NULL!\n", |
1569 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1570 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1571 | } else { |
1572 | struct ocfs2_dinode *fe; | |
0cf2f763 JB |
1573 | status = ocfs2_journal_access_di(handle, |
1574 | INODE_CACHE(old_dir), | |
1575 | old_dir_bh, | |
1576 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd | 1577 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
198a1ca3 | 1578 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
ec20cec7 | 1579 | ocfs2_journal_dirty(handle, old_dir_bh); |
ccd979bd MF |
1580 | } |
1581 | } | |
379dfe9d | 1582 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1583 | status = 0; |
1584 | bail: | |
1585 | if (rename_lock) | |
1586 | ocfs2_rename_unlock(osb); | |
1587 | ||
1588 | if (handle) | |
02dc1af4 | 1589 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1590 | |
8d5596c6 MF |
1591 | if (parents_locked) |
1592 | ocfs2_double_unlock(old_dir, new_dir); | |
1593 | ||
1594 | if (old_child_locked) | |
e63aecb6 | 1595 | ocfs2_inode_unlock(old_inode, 1); |
8d5596c6 MF |
1596 | |
1597 | if (new_child_locked) | |
e63aecb6 | 1598 | ocfs2_inode_unlock(new_inode, 1); |
8d5596c6 | 1599 | |
5098c27b MF |
1600 | if (orphan_dir) { |
1601 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1602 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
1603 | mutex_unlock(&orphan_dir->i_mutex); |
1604 | iput(orphan_dir); | |
1605 | } | |
1606 | ||
ccd979bd MF |
1607 | if (new_inode) |
1608 | sync_mapping_buffers(old_inode->i_mapping); | |
1609 | ||
1610 | if (new_inode) | |
1611 | iput(new_inode); | |
4a12ca3a MF |
1612 | |
1613 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1614 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1615 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1616 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1617 | ocfs2_free_dir_lookup_result(&target_insert); | |
1618 | ||
a81cb88b MF |
1619 | brelse(newfe_bh); |
1620 | brelse(old_inode_bh); | |
1621 | brelse(old_dir_bh); | |
1622 | brelse(new_dir_bh); | |
ccd979bd | 1623 | |
c1e8d35e TM |
1624 | if (status) |
1625 | mlog_errno(status); | |
ccd979bd MF |
1626 | |
1627 | return status; | |
1628 | } | |
1629 | ||
1630 | /* | |
1631 | * we expect i_size = strlen(symname). Copy symname into the file | |
1632 | * data, including the null terminator. | |
1633 | */ | |
1634 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1635 | handle_t *handle, |
ccd979bd MF |
1636 | struct inode *inode, |
1637 | const char *symname) | |
1638 | { | |
1639 | struct buffer_head **bhs = NULL; | |
1640 | const char *c; | |
1641 | struct super_block *sb = osb->sb; | |
4f902c37 | 1642 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1643 | int virtual, blocks, status, i, bytes_left; |
1644 | ||
1645 | bytes_left = i_size_read(inode) + 1; | |
1646 | /* we can't trust i_blocks because we're actually going to | |
1647 | * write i_size + 1 bytes. */ | |
1648 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1649 | ||
8990e44a TM |
1650 | trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks, |
1651 | i_size_read(inode), blocks); | |
ccd979bd MF |
1652 | |
1653 | /* Sanity check -- make sure we're going to fit. */ | |
1654 | if (bytes_left > | |
1655 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1656 | status = -EIO; | |
1657 | mlog_errno(status); | |
1658 | goto bail; | |
1659 | } | |
1660 | ||
1661 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1662 | if (!bhs) { | |
1663 | status = -ENOMEM; | |
1664 | mlog_errno(status); | |
1665 | goto bail; | |
1666 | } | |
1667 | ||
49cb8d2d MF |
1668 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1669 | NULL); | |
ccd979bd MF |
1670 | if (status < 0) { |
1671 | mlog_errno(status); | |
1672 | goto bail; | |
1673 | } | |
1674 | ||
1675 | /* links can never be larger than one cluster so we know this | |
1676 | * is all going to be contiguous, but do a sanity check | |
1677 | * anyway. */ | |
1678 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1679 | status = -EIO; | |
1680 | mlog_errno(status); | |
1681 | goto bail; | |
1682 | } | |
1683 | ||
1684 | virtual = 0; | |
1685 | while(bytes_left > 0) { | |
1686 | c = &symname[virtual * sb->s_blocksize]; | |
1687 | ||
1688 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1689 | if (!bhs[virtual]) { | |
1690 | status = -ENOMEM; | |
1691 | mlog_errno(status); | |
1692 | goto bail; | |
1693 | } | |
8cb471e8 JB |
1694 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
1695 | bhs[virtual]); | |
ccd979bd | 1696 | |
0cf2f763 JB |
1697 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
1698 | bhs[virtual], | |
ccd979bd MF |
1699 | OCFS2_JOURNAL_ACCESS_CREATE); |
1700 | if (status < 0) { | |
1701 | mlog_errno(status); | |
1702 | goto bail; | |
1703 | } | |
1704 | ||
1705 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1706 | ||
1707 | memcpy(bhs[virtual]->b_data, c, | |
1708 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1709 | bytes_left); | |
1710 | ||
ec20cec7 | 1711 | ocfs2_journal_dirty(handle, bhs[virtual]); |
ccd979bd MF |
1712 | |
1713 | virtual++; | |
1714 | p_blkno++; | |
1715 | bytes_left -= sb->s_blocksize; | |
1716 | } | |
1717 | ||
1718 | status = 0; | |
1719 | bail: | |
1720 | ||
1721 | if (bhs) { | |
1722 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1723 | brelse(bhs[i]); |
ccd979bd MF |
1724 | kfree(bhs); |
1725 | } | |
1726 | ||
c1e8d35e TM |
1727 | if (status) |
1728 | mlog_errno(status); | |
ccd979bd MF |
1729 | return status; |
1730 | } | |
1731 | ||
1732 | static int ocfs2_symlink(struct inode *dir, | |
1733 | struct dentry *dentry, | |
1734 | const char *symname) | |
1735 | { | |
1736 | int status, l, credits; | |
1737 | u64 newsize; | |
1738 | struct ocfs2_super *osb = NULL; | |
1739 | struct inode *inode = NULL; | |
1740 | struct super_block *sb; | |
1741 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1742 | struct buffer_head *parent_fe_bh = NULL; |
1743 | struct ocfs2_dinode *fe = NULL; | |
1744 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1745 | handle_t *handle = NULL; |
ccd979bd MF |
1746 | struct ocfs2_alloc_context *inode_ac = NULL; |
1747 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1748 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1749 | int want_clusters = 0; | |
1750 | int xattr_credits = 0; | |
1751 | struct ocfs2_security_xattr_info si = { | |
1752 | .enable = 1, | |
1753 | }; | |
a90714c1 | 1754 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1755 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
1756 | sigset_t oldset; |
1757 | int did_block_signals = 0; | |
595297a8 | 1758 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 1759 | |
8990e44a TM |
1760 | trace_ocfs2_symlink_begin(dir, dentry, symname, |
1761 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 1762 | |
871a2931 | 1763 | dquot_initialize(dir); |
907f4554 | 1764 | |
ccd979bd MF |
1765 | sb = dir->i_sb; |
1766 | osb = OCFS2_SB(sb); | |
1767 | ||
1768 | l = strlen(symname) + 1; | |
1769 | ||
1770 | credits = ocfs2_calc_symlink_credits(sb); | |
1771 | ||
ccd979bd | 1772 | /* lock the parent directory */ |
e63aecb6 | 1773 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1774 | if (status < 0) { |
1775 | if (status != -ENOENT) | |
1776 | mlog_errno(status); | |
6d8fc40e | 1777 | return status; |
ccd979bd MF |
1778 | } |
1779 | ||
1780 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
198a1ca3 | 1781 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
1782 | /* can't make a file in a deleted directory. */ |
1783 | status = -ENOENT; | |
1784 | goto bail; | |
1785 | } | |
1786 | ||
1787 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1788 | dentry->d_name.len); | |
1789 | if (status) | |
1790 | goto bail; | |
1791 | ||
1792 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1793 | dentry->d_name.name, | |
4a12ca3a | 1794 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1795 | if (status < 0) { |
1796 | mlog_errno(status); | |
1797 | goto bail; | |
1798 | } | |
1799 | ||
da5cbf2f | 1800 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1801 | if (status < 0) { |
1802 | if (status != -ENOSPC) | |
1803 | mlog_errno(status); | |
1804 | goto bail; | |
1805 | } | |
1806 | ||
f5d36202 TY |
1807 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
1808 | if (!inode) { | |
1809 | status = -ENOMEM; | |
1810 | mlog_errno(status); | |
1811 | goto bail; | |
1812 | } | |
1813 | ||
534eaddd | 1814 | /* get security xattr */ |
2a7dba39 | 1815 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
1816 | if (status) { |
1817 | if (status == -EOPNOTSUPP) | |
1818 | si.enable = 0; | |
1819 | else { | |
1820 | mlog_errno(status); | |
1821 | goto bail; | |
1822 | } | |
1823 | } | |
1824 | ||
1825 | /* calculate meta data/clusters for setting security xattr */ | |
1826 | if (si.enable) { | |
1827 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1828 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1829 | if (status < 0) { |
534eaddd | 1830 | mlog_errno(status); |
ccd979bd MF |
1831 | goto bail; |
1832 | } | |
1833 | } | |
1834 | ||
534eaddd TY |
1835 | /* don't reserve bitmap space for fast symlinks. */ |
1836 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1837 | want_clusters += 1; | |
1838 | ||
1839 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1840 | if (status < 0) { | |
1841 | if (status != -ENOSPC) | |
1842 | mlog_errno(status); | |
1843 | goto bail; | |
1844 | } | |
1845 | ||
1846 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1847 | if (IS_ERR(handle)) { |
1848 | status = PTR_ERR(handle); | |
1849 | handle = NULL; | |
1850 | mlog_errno(status); | |
1851 | goto bail; | |
1852 | } | |
1853 | ||
547ba7c8 JB |
1854 | /* Starting to change things, restart is no longer possible. */ |
1855 | ocfs2_block_signals(&oldset); | |
1856 | did_block_signals = 1; | |
1857 | ||
63936dda CH |
1858 | status = dquot_alloc_inode(inode); |
1859 | if (status) | |
a90714c1 | 1860 | goto bail; |
a90714c1 JK |
1861 | did_quota_inode = 1; |
1862 | ||
8990e44a TM |
1863 | trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len, |
1864 | dentry->d_name.name, | |
1865 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
1866 | inode->i_mode); | |
19bd341f TM |
1867 | |
1868 | status = ocfs2_mknod_locked(osb, dir, inode, | |
f5d36202 TY |
1869 | 0, &new_fe_bh, parent_fe_bh, handle, |
1870 | inode_ac); | |
ccd979bd MF |
1871 | if (status < 0) { |
1872 | mlog_errno(status); | |
1873 | goto bail; | |
1874 | } | |
1875 | ||
1876 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1877 | inode->i_rdev = 0; | |
1878 | newsize = l - 1; | |
ea022dfb | 1879 | inode->i_op = &ocfs2_symlink_inode_operations; |
ccd979bd | 1880 | if (l > ocfs2_fast_symlink_chars(sb)) { |
dcd0538f MF |
1881 | u32 offset = 0; |
1882 | ||
5dd4056d CH |
1883 | status = dquot_alloc_space_nodirty(inode, |
1884 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1885 | if (status) | |
a90714c1 | 1886 | goto bail; |
a90714c1 | 1887 | did_quota = 1; |
ea022dfb | 1888 | inode->i_mapping->a_ops = &ocfs2_aops; |
0eb8d47e TM |
1889 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1890 | new_fe_bh, | |
1891 | handle, data_ac, NULL, | |
1892 | NULL); | |
ccd979bd MF |
1893 | if (status < 0) { |
1894 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1895 | mlog(ML_ERROR, |
1896 | "Failed to extend file to %llu\n", | |
1897 | (unsigned long long)newsize); | |
ccd979bd MF |
1898 | mlog_errno(status); |
1899 | status = -ENOSPC; | |
1900 | } | |
1901 | goto bail; | |
1902 | } | |
1903 | i_size_write(inode, newsize); | |
8110b073 | 1904 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd | 1905 | } else { |
ea022dfb | 1906 | inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops; |
ccd979bd MF |
1907 | memcpy((char *) fe->id2.i_symlink, symname, l); |
1908 | i_size_write(inode, newsize); | |
1909 | inode->i_blocks = 0; | |
1910 | } | |
1911 | ||
1912 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1913 | if (status < 0) { | |
1914 | mlog_errno(status); | |
1915 | goto bail; | |
1916 | } | |
1917 | ||
1918 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
1919 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
1920 | symname); | |
1921 | if (status < 0) { | |
1922 | mlog_errno(status); | |
1923 | goto bail; | |
1924 | } | |
1925 | } | |
1926 | ||
534eaddd TY |
1927 | if (si.enable) { |
1928 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
1929 | xattr_ac, data_ac); | |
1930 | if (status < 0) { | |
1931 | mlog_errno(status); | |
1932 | goto bail; | |
1933 | } | |
1934 | } | |
1935 | ||
a9743fcd MF |
1936 | /* |
1937 | * Do this before adding the entry to the directory. We add | |
1938 | * also set d_op after success so that ->d_iput() will cleanup | |
1939 | * the dentry lock even if ocfs2_add_entry() fails below. | |
1940 | */ | |
1941 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); | |
1942 | if (status) { | |
ccd979bd MF |
1943 | mlog_errno(status); |
1944 | goto bail; | |
1945 | } | |
1946 | ||
595297a8 | 1947 | dl = dentry->d_fsdata; |
1948 | ||
a9743fcd MF |
1949 | status = ocfs2_add_entry(handle, dentry, inode, |
1950 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
1951 | &lookup); | |
1952 | if (status < 0) { | |
379dfe9d MF |
1953 | mlog_errno(status); |
1954 | goto bail; | |
1955 | } | |
1956 | ||
ccd979bd | 1957 | insert_inode_hash(inode); |
ccd979bd MF |
1958 | d_instantiate(dentry, inode); |
1959 | bail: | |
a90714c1 | 1960 | if (status < 0 && did_quota) |
5dd4056d | 1961 | dquot_free_space_nodirty(inode, |
a90714c1 JK |
1962 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
1963 | if (status < 0 && did_quota_inode) | |
63936dda | 1964 | dquot_free_inode(inode); |
ccd979bd | 1965 | if (handle) |
02dc1af4 | 1966 | ocfs2_commit_trans(osb, handle); |
6d8fc40e | 1967 | |
e63aecb6 | 1968 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
1969 | if (did_block_signals) |
1970 | ocfs2_unblock_signals(&oldset); | |
6d8fc40e | 1971 | |
a81cb88b MF |
1972 | brelse(new_fe_bh); |
1973 | brelse(parent_fe_bh); | |
534eaddd | 1974 | kfree(si.value); |
4a12ca3a | 1975 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
1976 | if (inode_ac) |
1977 | ocfs2_free_alloc_context(inode_ac); | |
1978 | if (data_ac) | |
1979 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
1980 | if (xattr_ac) |
1981 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 | 1982 | if ((status < 0) && inode) { |
595297a8 | 1983 | if (dl) |
1984 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
1985 | ||
ab41fdc8 | 1986 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
f5d36202 | 1987 | clear_nlink(inode); |
ccd979bd | 1988 | iput(inode); |
f5d36202 | 1989 | } |
ccd979bd | 1990 | |
c1e8d35e TM |
1991 | if (status) |
1992 | mlog_errno(status); | |
ccd979bd MF |
1993 | |
1994 | return status; | |
1995 | } | |
1996 | ||
ccd979bd MF |
1997 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
1998 | { | |
1999 | int status, namelen; | |
2000 | ||
b0697053 MF |
2001 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
2002 | (long long)blkno); | |
ccd979bd MF |
2003 | if (namelen <= 0) { |
2004 | if (namelen) | |
2005 | status = namelen; | |
2006 | else | |
2007 | status = -EINVAL; | |
2008 | mlog_errno(status); | |
2009 | goto bail; | |
2010 | } | |
2011 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
2012 | status = -EINVAL; | |
2013 | mlog_errno(status); | |
2014 | goto bail; | |
2015 | } | |
2016 | ||
8990e44a | 2017 | trace_ocfs2_blkno_stringify(blkno, name, namelen); |
ccd979bd MF |
2018 | |
2019 | status = 0; | |
2020 | bail: | |
c1e8d35e TM |
2021 | if (status < 0) |
2022 | mlog_errno(status); | |
ccd979bd MF |
2023 | return status; |
2024 | } | |
2025 | ||
dd43bcde MF |
2026 | static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb, |
2027 | struct inode **ret_orphan_dir, | |
2028 | struct buffer_head **ret_orphan_dir_bh) | |
ccd979bd | 2029 | { |
5098c27b | 2030 | struct inode *orphan_dir_inode; |
ccd979bd | 2031 | struct buffer_head *orphan_dir_bh = NULL; |
dd43bcde | 2032 | int ret = 0; |
ccd979bd MF |
2033 | |
2034 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2035 | ORPHAN_DIR_SYSTEM_INODE, | |
2036 | osb->slot_num); | |
2037 | if (!orphan_dir_inode) { | |
dd43bcde MF |
2038 | ret = -ENOENT; |
2039 | mlog_errno(ret); | |
2040 | return ret; | |
ccd979bd MF |
2041 | } |
2042 | ||
5098c27b MF |
2043 | mutex_lock(&orphan_dir_inode->i_mutex); |
2044 | ||
dd43bcde MF |
2045 | ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2046 | if (ret < 0) { | |
2047 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2048 | iput(orphan_dir_inode); | |
2049 | ||
2050 | mlog_errno(ret); | |
2051 | return ret; | |
ccd979bd MF |
2052 | } |
2053 | ||
dd43bcde MF |
2054 | *ret_orphan_dir = orphan_dir_inode; |
2055 | *ret_orphan_dir_bh = orphan_dir_bh; | |
5098c27b | 2056 | |
dd43bcde MF |
2057 | return 0; |
2058 | } | |
2059 | ||
2060 | static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode, | |
2061 | struct buffer_head *orphan_dir_bh, | |
2062 | u64 blkno, | |
2063 | char *name, | |
2064 | struct ocfs2_dir_lookup_result *lookup) | |
2065 | { | |
2066 | int ret; | |
2067 | struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb); | |
2068 | ||
2069 | ret = ocfs2_blkno_stringify(blkno, name); | |
2070 | if (ret < 0) { | |
2071 | mlog_errno(ret); | |
2072 | return ret; | |
2073 | } | |
2074 | ||
2075 | ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
2076 | orphan_dir_bh, name, | |
2077 | OCFS2_ORPHAN_NAMELEN, lookup); | |
2078 | if (ret < 0) { | |
2079 | mlog_errno(ret); | |
2080 | return ret; | |
2081 | } | |
2082 | ||
2083 | return 0; | |
2084 | } | |
2085 | ||
2086 | /** | |
2087 | * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for | |
2088 | * insertion of an orphan. | |
2089 | * @osb: ocfs2 file system | |
2090 | * @ret_orphan_dir: Orphan dir inode - returned locked! | |
2091 | * @blkno: Actual block number of the inode to be inserted into orphan dir. | |
2092 | * @lookup: dir lookup result, to be passed back into functions like | |
2093 | * ocfs2_orphan_add | |
2094 | * | |
2095 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2096 | * fields will be populated. | |
2097 | * | |
2098 | * Returns non-zero on failure. | |
2099 | */ | |
2100 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
2101 | struct inode **ret_orphan_dir, | |
2102 | u64 blkno, | |
2103 | char *name, | |
2104 | struct ocfs2_dir_lookup_result *lookup) | |
2105 | { | |
2106 | struct inode *orphan_dir_inode = NULL; | |
2107 | struct buffer_head *orphan_dir_bh = NULL; | |
2108 | int ret = 0; | |
2109 | ||
2110 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode, | |
2111 | &orphan_dir_bh); | |
2112 | if (ret < 0) { | |
2113 | mlog_errno(ret); | |
2114 | return ret; | |
2115 | } | |
2116 | ||
2117 | ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh, | |
2118 | blkno, name, lookup); | |
2119 | if (ret < 0) { | |
2120 | mlog_errno(ret); | |
2121 | goto out; | |
ccd979bd MF |
2122 | } |
2123 | ||
5098c27b MF |
2124 | *ret_orphan_dir = orphan_dir_inode; |
2125 | ||
dd43bcde MF |
2126 | out: |
2127 | brelse(orphan_dir_bh); | |
2128 | ||
2129 | if (ret) { | |
2130 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5098c27b | 2131 | mutex_unlock(&orphan_dir_inode->i_mutex); |
ccd979bd | 2132 | iput(orphan_dir_inode); |
5098c27b | 2133 | } |
ccd979bd | 2134 | |
c1e8d35e TM |
2135 | if (ret) |
2136 | mlog_errno(ret); | |
dd43bcde | 2137 | return ret; |
ccd979bd MF |
2138 | } |
2139 | ||
2140 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 2141 | handle_t *handle, |
ccd979bd | 2142 | struct inode *inode, |
3939fda4 | 2143 | struct buffer_head *fe_bh, |
ccd979bd | 2144 | char *name, |
4a12ca3a | 2145 | struct ocfs2_dir_lookup_result *lookup, |
5098c27b | 2146 | struct inode *orphan_dir_inode) |
ccd979bd | 2147 | { |
ccd979bd MF |
2148 | struct buffer_head *orphan_dir_bh = NULL; |
2149 | int status = 0; | |
2150 | struct ocfs2_dinode *orphan_fe; | |
3939fda4 | 2151 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; |
ccd979bd | 2152 | |
8990e44a TM |
2153 | trace_ocfs2_orphan_add_begin( |
2154 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 2155 | |
b657c95c | 2156 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
2157 | if (status < 0) { |
2158 | mlog_errno(status); | |
2159 | goto leave; | |
2160 | } | |
2161 | ||
0cf2f763 JB |
2162 | status = ocfs2_journal_access_di(handle, |
2163 | INODE_CACHE(orphan_dir_inode), | |
2164 | orphan_dir_bh, | |
13723d00 | 2165 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2166 | if (status < 0) { |
2167 | mlog_errno(status); | |
2168 | goto leave; | |
2169 | } | |
2170 | ||
ea45466a YL |
2171 | /* |
2172 | * We're going to journal the change of i_flags and i_orphaned_slot. | |
2173 | * It's safe anyway, though some callers may duplicate the journaling. | |
2174 | * Journaling within the func just make the logic look more | |
2175 | * straightforward. | |
2176 | */ | |
2177 | status = ocfs2_journal_access_di(handle, | |
2178 | INODE_CACHE(inode), | |
2179 | fe_bh, | |
2180 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2181 | if (status < 0) { | |
2182 | mlog_errno(status); | |
2183 | goto leave; | |
2184 | } | |
2185 | ||
ccd979bd MF |
2186 | /* we're a cluster, and nlink can change on disk from |
2187 | * underneath us... */ | |
2188 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2189 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2190 | ocfs2_add_links_count(orphan_fe, 1); |
bfe86848 | 2191 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2192 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2193 | |
2194 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
2195 | OCFS2_ORPHAN_NAMELEN, inode, | |
2196 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 2197 | orphan_dir_bh, lookup); |
ccd979bd MF |
2198 | if (status < 0) { |
2199 | mlog_errno(status); | |
ea45466a | 2200 | goto rollback; |
3939fda4 TY |
2201 | } |
2202 | ||
13eb9887 | 2203 | fe->i_flags |= cpu_to_le32(OCFS2_ORPHANED_FL); |
d4cd1871 | 2204 | OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR; |
ccd979bd MF |
2205 | |
2206 | /* Record which orphan dir our inode now resides | |
2207 | * in. delete_inode will use this to determine which orphan | |
2208 | * dir to lock. */ | |
50008630 | 2209 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); |
ccd979bd | 2210 | |
3939fda4 TY |
2211 | ocfs2_journal_dirty(handle, fe_bh); |
2212 | ||
8990e44a TM |
2213 | trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno, |
2214 | osb->slot_num); | |
ccd979bd | 2215 | |
ea45466a YL |
2216 | rollback: |
2217 | if (status < 0) { | |
2218 | if (S_ISDIR(inode->i_mode)) | |
2219 | ocfs2_add_links_count(orphan_fe, -1); | |
2220 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); | |
2221 | } | |
2222 | ||
ccd979bd | 2223 | leave: |
a81cb88b | 2224 | brelse(orphan_dir_bh); |
ccd979bd | 2225 | |
ccd979bd MF |
2226 | return status; |
2227 | } | |
2228 | ||
2229 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
2230 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 2231 | handle_t *handle, |
ccd979bd MF |
2232 | struct inode *orphan_dir_inode, |
2233 | struct inode *inode, | |
2234 | struct buffer_head *orphan_dir_bh) | |
2235 | { | |
2236 | char name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2237 | struct ocfs2_dinode *orphan_fe; | |
2238 | int status = 0; | |
4a12ca3a | 2239 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd | 2240 | |
ccd979bd MF |
2241 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); |
2242 | if (status < 0) { | |
2243 | mlog_errno(status); | |
2244 | goto leave; | |
2245 | } | |
2246 | ||
8990e44a TM |
2247 | trace_ocfs2_orphan_del( |
2248 | (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
2249 | name, OCFS2_ORPHAN_NAMELEN); | |
ccd979bd MF |
2250 | |
2251 | /* find it's spot in the orphan directory */ | |
4a12ca3a MF |
2252 | status = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, orphan_dir_inode, |
2253 | &lookup); | |
2254 | if (status) { | |
ccd979bd MF |
2255 | mlog_errno(status); |
2256 | goto leave; | |
2257 | } | |
2258 | ||
2259 | /* remove it from the orphan directory */ | |
4a12ca3a | 2260 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
2261 | if (status < 0) { |
2262 | mlog_errno(status); | |
2263 | goto leave; | |
2264 | } | |
2265 | ||
0cf2f763 JB |
2266 | status = ocfs2_journal_access_di(handle, |
2267 | INODE_CACHE(orphan_dir_inode), | |
2268 | orphan_dir_bh, | |
13723d00 | 2269 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2270 | if (status < 0) { |
2271 | mlog_errno(status); | |
2272 | goto leave; | |
2273 | } | |
2274 | ||
2275 | /* do the i_nlink dance! :) */ | |
2276 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2277 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2278 | ocfs2_add_links_count(orphan_fe, -1); |
bfe86848 | 2279 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2280 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2281 | |
2282 | leave: | |
4a12ca3a | 2283 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd | 2284 | |
c1e8d35e TM |
2285 | if (status) |
2286 | mlog_errno(status); | |
ccd979bd MF |
2287 | return status; |
2288 | } | |
2289 | ||
97b8f4a9 | 2290 | /** |
25985edc | 2291 | * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to receive a newly |
97b8f4a9 MF |
2292 | * allocated file. This is different from the typical 'add to orphan dir' |
2293 | * operation in that the inode does not yet exist. This is a problem because | |
2294 | * the orphan dir stringifies the inode block number to come up with it's | |
2295 | * dirent. Obviously if the inode does not yet exist we have a chicken and egg | |
2296 | * problem. This function works around it by calling deeper into the orphan | |
2297 | * and suballoc code than other callers. Use this only by necessity. | |
2298 | * @dir: The directory which this inode will ultimately wind up under - not the | |
2299 | * orphan dir! | |
2300 | * @dir_bh: buffer_head the @dir inode block | |
2301 | * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled | |
2302 | * with the string to be used for orphan dirent. Pass back to the orphan dir | |
2303 | * code. | |
2304 | * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan | |
2305 | * dir code. | |
2306 | * @ret_di_blkno: block number where the new inode will be allocated. | |
2307 | * @orphan_insert: Dir insert context to be passed back into orphan dir code. | |
2308 | * @ret_inode_ac: Inode alloc context to be passed back to the allocator. | |
2309 | * | |
2310 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2311 | * fields will be populated. | |
2312 | * | |
2313 | * Returns non-zero on failure. | |
2314 | */ | |
2315 | static int ocfs2_prep_new_orphaned_file(struct inode *dir, | |
2316 | struct buffer_head *dir_bh, | |
2317 | char *orphan_name, | |
2318 | struct inode **ret_orphan_dir, | |
2319 | u64 *ret_di_blkno, | |
2320 | struct ocfs2_dir_lookup_result *orphan_insert, | |
2321 | struct ocfs2_alloc_context **ret_inode_ac) | |
2322 | { | |
2323 | int ret; | |
2324 | u64 di_blkno; | |
2325 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2326 | struct inode *orphan_dir = NULL; | |
2327 | struct buffer_head *orphan_dir_bh = NULL; | |
2328 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2329 | ||
2330 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh); | |
2331 | if (ret < 0) { | |
2332 | mlog_errno(ret); | |
2333 | return ret; | |
2334 | } | |
2335 | ||
2336 | /* reserve an inode spot */ | |
2337 | ret = ocfs2_reserve_new_inode(osb, &inode_ac); | |
2338 | if (ret < 0) { | |
2339 | if (ret != -ENOSPC) | |
2340 | mlog_errno(ret); | |
2341 | goto out; | |
2342 | } | |
2343 | ||
2344 | ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac, | |
2345 | &di_blkno); | |
2346 | if (ret) { | |
2347 | mlog_errno(ret); | |
2348 | goto out; | |
2349 | } | |
2350 | ||
2351 | ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh, | |
2352 | di_blkno, orphan_name, orphan_insert); | |
2353 | if (ret < 0) { | |
2354 | mlog_errno(ret); | |
2355 | goto out; | |
2356 | } | |
2357 | ||
2358 | out: | |
2359 | if (ret == 0) { | |
2360 | *ret_orphan_dir = orphan_dir; | |
2361 | *ret_di_blkno = di_blkno; | |
2362 | *ret_inode_ac = inode_ac; | |
2363 | /* | |
2364 | * orphan_name and orphan_insert are already up to | |
2365 | * date via prepare_orphan_dir | |
2366 | */ | |
2367 | } else { | |
2368 | /* Unroll reserve_new_inode* */ | |
2369 | if (inode_ac) | |
2370 | ocfs2_free_alloc_context(inode_ac); | |
2371 | ||
2372 | /* Unroll orphan dir locking */ | |
2373 | mutex_unlock(&orphan_dir->i_mutex); | |
2374 | ocfs2_inode_unlock(orphan_dir, 1); | |
2375 | iput(orphan_dir); | |
2376 | } | |
2377 | ||
2378 | brelse(orphan_dir_bh); | |
2379 | ||
7869e590 | 2380 | return ret; |
97b8f4a9 MF |
2381 | } |
2382 | ||
bc13d347 TM |
2383 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
2384 | int mode, | |
2385 | struct inode **new_inode) | |
2386 | { | |
2387 | int status, did_quota_inode = 0; | |
2388 | struct inode *inode = NULL; | |
2389 | struct inode *orphan_dir = NULL; | |
2390 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2391 | struct ocfs2_dinode *di = NULL; | |
2392 | handle_t *handle = NULL; | |
2393 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2394 | struct buffer_head *parent_di_bh = NULL; | |
2395 | struct buffer_head *new_di_bh = NULL; | |
2396 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2397 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
97b8f4a9 MF |
2398 | u64 uninitialized_var(di_blkno), suballoc_loc; |
2399 | u16 suballoc_bit; | |
bc13d347 TM |
2400 | |
2401 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2402 | if (status < 0) { | |
2403 | if (status != -ENOENT) | |
2404 | mlog_errno(status); | |
2405 | return status; | |
2406 | } | |
2407 | ||
97b8f4a9 MF |
2408 | status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh, |
2409 | orphan_name, &orphan_dir, | |
2410 | &di_blkno, &orphan_insert, &inode_ac); | |
bc13d347 TM |
2411 | if (status < 0) { |
2412 | if (status != -ENOSPC) | |
2413 | mlog_errno(status); | |
2414 | goto leave; | |
2415 | } | |
2416 | ||
2417 | inode = ocfs2_get_init_inode(dir, mode); | |
2418 | if (!inode) { | |
2419 | status = -ENOMEM; | |
2420 | mlog_errno(status); | |
2421 | goto leave; | |
2422 | } | |
2423 | ||
2424 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); | |
2425 | if (IS_ERR(handle)) { | |
2426 | status = PTR_ERR(handle); | |
2427 | handle = NULL; | |
2428 | mlog_errno(status); | |
2429 | goto leave; | |
2430 | } | |
2431 | ||
63936dda CH |
2432 | status = dquot_alloc_inode(inode); |
2433 | if (status) | |
bc13d347 | 2434 | goto leave; |
bc13d347 TM |
2435 | did_quota_inode = 1; |
2436 | ||
97b8f4a9 MF |
2437 | status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac, |
2438 | &suballoc_loc, | |
2439 | &suballoc_bit, di_blkno); | |
bc13d347 TM |
2440 | if (status < 0) { |
2441 | mlog_errno(status); | |
2442 | goto leave; | |
2443 | } | |
2444 | ||
6d6b77f1 | 2445 | clear_nlink(inode); |
97b8f4a9 MF |
2446 | /* do the real work now. */ |
2447 | status = __ocfs2_mknod_locked(dir, inode, | |
2448 | 0, &new_di_bh, parent_di_bh, handle, | |
2449 | inode_ac, di_blkno, suballoc_loc, | |
2450 | suballoc_bit); | |
bc13d347 TM |
2451 | if (status < 0) { |
2452 | mlog_errno(status); | |
2453 | goto leave; | |
2454 | } | |
2455 | ||
2456 | di = (struct ocfs2_dinode *)new_di_bh->b_data; | |
3939fda4 | 2457 | status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name, |
bc13d347 TM |
2458 | &orphan_insert, orphan_dir); |
2459 | if (status < 0) { | |
2460 | mlog_errno(status); | |
2461 | goto leave; | |
2462 | } | |
2463 | ||
2464 | /* get open lock so that only nodes can't remove it from orphan dir. */ | |
2465 | status = ocfs2_open_lock(inode); | |
2466 | if (status < 0) | |
2467 | mlog_errno(status); | |
2468 | ||
c7d260af | 2469 | insert_inode_hash(inode); |
bc13d347 TM |
2470 | leave: |
2471 | if (status < 0 && did_quota_inode) | |
63936dda | 2472 | dquot_free_inode(inode); |
bc13d347 TM |
2473 | if (handle) |
2474 | ocfs2_commit_trans(osb, handle); | |
2475 | ||
2476 | if (orphan_dir) { | |
2477 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
2478 | ocfs2_inode_unlock(orphan_dir, 1); | |
2479 | mutex_unlock(&orphan_dir->i_mutex); | |
2480 | iput(orphan_dir); | |
2481 | } | |
2482 | ||
bc13d347 TM |
2483 | if ((status < 0) && inode) { |
2484 | clear_nlink(inode); | |
2485 | iput(inode); | |
2486 | } | |
2487 | ||
2488 | if (inode_ac) | |
2489 | ocfs2_free_alloc_context(inode_ac); | |
2490 | ||
2491 | brelse(new_di_bh); | |
2492 | ||
2493 | if (!status) | |
2494 | *new_inode = inode; | |
2495 | ||
2496 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2497 | ||
2498 | ocfs2_inode_unlock(dir, 1); | |
2499 | brelse(parent_di_bh); | |
2500 | return status; | |
2501 | } | |
2502 | ||
2503 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, | |
2504 | struct inode *inode, | |
2505 | struct dentry *dentry) | |
2506 | { | |
2507 | int status = 0; | |
2508 | struct buffer_head *parent_di_bh = NULL; | |
2509 | handle_t *handle = NULL; | |
2510 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2511 | struct ocfs2_dinode *dir_di, *di; | |
2512 | struct inode *orphan_dir_inode = NULL; | |
2513 | struct buffer_head *orphan_dir_bh = NULL; | |
2514 | struct buffer_head *di_bh = NULL; | |
2515 | struct ocfs2_dir_lookup_result lookup = { NULL, }; | |
2516 | ||
8990e44a TM |
2517 | trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry, |
2518 | dentry->d_name.len, dentry->d_name.name, | |
2519 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
2520 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
bc13d347 TM |
2521 | |
2522 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2523 | if (status < 0) { | |
2524 | if (status != -ENOENT) | |
2525 | mlog_errno(status); | |
2526 | return status; | |
2527 | } | |
2528 | ||
2529 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; | |
2530 | if (!dir_di->i_links_count) { | |
2531 | /* can't make a file in a deleted directory. */ | |
2532 | status = -ENOENT; | |
2533 | goto leave; | |
2534 | } | |
2535 | ||
2536 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
2537 | dentry->d_name.len); | |
2538 | if (status) | |
2539 | goto leave; | |
2540 | ||
2541 | /* get a spot inside the dir. */ | |
2542 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, | |
2543 | dentry->d_name.name, | |
2544 | dentry->d_name.len, &lookup); | |
2545 | if (status < 0) { | |
2546 | mlog_errno(status); | |
2547 | goto leave; | |
2548 | } | |
2549 | ||
2550 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2551 | ORPHAN_DIR_SYSTEM_INODE, | |
2552 | osb->slot_num); | |
2553 | if (!orphan_dir_inode) { | |
2554 | status = -EEXIST; | |
2555 | mlog_errno(status); | |
2556 | goto leave; | |
2557 | } | |
2558 | ||
2559 | mutex_lock(&orphan_dir_inode->i_mutex); | |
2560 | ||
2561 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2562 | if (status < 0) { | |
2563 | mlog_errno(status); | |
2564 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2565 | iput(orphan_dir_inode); | |
2566 | goto leave; | |
2567 | } | |
2568 | ||
2569 | status = ocfs2_read_inode_block(inode, &di_bh); | |
2570 | if (status < 0) { | |
2571 | mlog_errno(status); | |
2572 | goto orphan_unlock; | |
2573 | } | |
2574 | ||
2575 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); | |
2576 | if (IS_ERR(handle)) { | |
2577 | status = PTR_ERR(handle); | |
2578 | handle = NULL; | |
2579 | mlog_errno(status); | |
2580 | goto orphan_unlock; | |
2581 | } | |
2582 | ||
2583 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), | |
2584 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2585 | if (status < 0) { | |
2586 | mlog_errno(status); | |
2587 | goto out_commit; | |
2588 | } | |
2589 | ||
2590 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
2591 | orphan_dir_bh); | |
2592 | if (status < 0) { | |
2593 | mlog_errno(status); | |
2594 | goto out_commit; | |
2595 | } | |
2596 | ||
2597 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
13eb9887 | 2598 | di->i_flags &= ~cpu_to_le32(OCFS2_ORPHANED_FL); |
bc13d347 | 2599 | di->i_orphaned_slot = 0; |
bfe86848 | 2600 | set_nlink(inode, 1); |
10cf1a02 | 2601 | ocfs2_set_links_count(di, inode->i_nlink); |
6fdb702d | 2602 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
bc13d347 TM |
2603 | ocfs2_journal_dirty(handle, di_bh); |
2604 | ||
2605 | status = ocfs2_add_entry(handle, dentry, inode, | |
2606 | OCFS2_I(inode)->ip_blkno, parent_di_bh, | |
2607 | &lookup); | |
2608 | if (status < 0) { | |
2609 | mlog_errno(status); | |
2610 | goto out_commit; | |
2611 | } | |
2612 | ||
2613 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
2614 | OCFS2_I(dir)->ip_blkno); | |
2615 | if (status) { | |
2616 | mlog_errno(status); | |
2617 | goto out_commit; | |
2618 | } | |
2619 | ||
bc13d347 TM |
2620 | d_instantiate(dentry, inode); |
2621 | status = 0; | |
2622 | out_commit: | |
2623 | ocfs2_commit_trans(osb, handle); | |
2624 | orphan_unlock: | |
2625 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
2626 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2627 | iput(orphan_dir_inode); | |
2628 | leave: | |
2629 | ||
2630 | ocfs2_inode_unlock(dir, 1); | |
2631 | ||
2632 | brelse(di_bh); | |
2633 | brelse(parent_di_bh); | |
2634 | brelse(orphan_dir_bh); | |
2635 | ||
2636 | ocfs2_free_dir_lookup_result(&lookup); | |
2637 | ||
c1e8d35e TM |
2638 | if (status) |
2639 | mlog_errno(status); | |
bc13d347 TM |
2640 | |
2641 | return status; | |
2642 | } | |
2643 | ||
92e1d5be | 2644 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2645 | .create = ocfs2_create, |
2646 | .lookup = ocfs2_lookup, | |
2647 | .link = ocfs2_link, | |
2648 | .unlink = ocfs2_unlink, | |
2649 | .rmdir = ocfs2_unlink, | |
2650 | .symlink = ocfs2_symlink, | |
2651 | .mkdir = ocfs2_mkdir, | |
2652 | .mknod = ocfs2_mknod, | |
2653 | .rename = ocfs2_rename, | |
2654 | .setattr = ocfs2_setattr, | |
2655 | .getattr = ocfs2_getattr, | |
d38eb8db | 2656 | .permission = ocfs2_permission, |
cf1d6c76 TY |
2657 | .setxattr = generic_setxattr, |
2658 | .getxattr = generic_getxattr, | |
2659 | .listxattr = ocfs2_listxattr, | |
2660 | .removexattr = generic_removexattr, | |
55f4946e | 2661 | .fiemap = ocfs2_fiemap, |
4e34e719 | 2662 | .get_acl = ocfs2_iop_get_acl, |
702e5bc6 | 2663 | .set_acl = ocfs2_iop_set_acl, |
ccd979bd | 2664 | }; |