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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 | ||
53dc20b9 X |
97 | static int ocfs2_double_lock(struct ocfs2_super *osb, |
98 | struct buffer_head **bh1, | |
99 | struct inode *inode1, | |
100 | struct buffer_head **bh2, | |
101 | struct inode *inode2, | |
102 | int rename); | |
103 | ||
104 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2); | |
ccd979bd MF |
105 | /* An orphan dir name is an 8 byte value, printed as a hex string */ |
106 | #define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64))) | |
107 | ||
108 | static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry, | |
00cd8dd3 | 109 | unsigned int flags) |
ccd979bd MF |
110 | { |
111 | int status; | |
112 | u64 blkno; | |
ccd979bd MF |
113 | struct inode *inode = NULL; |
114 | struct dentry *ret; | |
ccd979bd MF |
115 | struct ocfs2_inode_info *oi; |
116 | ||
8990e44a TM |
117 | trace_ocfs2_lookup(dir, dentry, dentry->d_name.len, |
118 | dentry->d_name.name, | |
119 | (unsigned long long)OCFS2_I(dir)->ip_blkno, 0); | |
ccd979bd MF |
120 | |
121 | if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) { | |
122 | ret = ERR_PTR(-ENAMETOOLONG); | |
123 | goto bail; | |
124 | } | |
125 | ||
cb25797d | 126 | status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT); |
ccd979bd MF |
127 | if (status < 0) { |
128 | if (status != -ENOENT) | |
129 | mlog_errno(status); | |
130 | ret = ERR_PTR(status); | |
131 | goto bail; | |
132 | } | |
133 | ||
be94d117 MF |
134 | status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name, |
135 | dentry->d_name.len, &blkno); | |
ccd979bd MF |
136 | if (status < 0) |
137 | goto bail_add; | |
138 | ||
5fa0613e | 139 | inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0); |
ccd979bd | 140 | if (IS_ERR(inode)) { |
ccd979bd MF |
141 | ret = ERR_PTR(-EACCES); |
142 | goto bail_unlock; | |
143 | } | |
144 | ||
145 | oi = OCFS2_I(inode); | |
146 | /* Clear any orphaned state... If we were able to look up the | |
147 | * inode from a directory, it certainly can't be orphaned. We | |
148 | * might have the bad state from a node which intended to | |
149 | * orphan this inode but crashed before it could commit the | |
150 | * unlink. */ | |
151 | spin_lock(&oi->ip_lock); | |
152 | oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED; | |
ccd979bd MF |
153 | spin_unlock(&oi->ip_lock); |
154 | ||
155 | bail_add: | |
ccd979bd MF |
156 | ret = d_splice_alias(inode, dentry); |
157 | ||
379dfe9d MF |
158 | if (inode) { |
159 | /* | |
160 | * If d_splice_alias() finds a DCACHE_DISCONNECTED | |
161 | * dentry, it will d_move() it on top of ourse. The | |
162 | * return value will indicate this however, so in | |
163 | * those cases, we switch them around for the locking | |
164 | * code. | |
165 | * | |
166 | * NOTE: This dentry already has ->d_op set from | |
167 | * ocfs2_get_parent() and ocfs2_get_dentry() | |
168 | */ | |
d3556bab | 169 | if (!IS_ERR_OR_NULL(ret)) |
379dfe9d MF |
170 | dentry = ret; |
171 | ||
172 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
0027dd5b | 173 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
174 | if (status) { |
175 | mlog_errno(status); | |
176 | ret = ERR_PTR(status); | |
177 | goto bail_unlock; | |
178 | } | |
5e98d492 GR |
179 | } else |
180 | ocfs2_dentry_attach_gen(dentry); | |
379dfe9d | 181 | |
ccd979bd MF |
182 | bail_unlock: |
183 | /* Don't drop the cluster lock until *after* the d_add -- | |
184 | * unlink on another node will message us to remove that | |
185 | * dentry under this lock so otherwise we can race this with | |
34d024f8 | 186 | * the downconvert thread and have a stale dentry. */ |
e63aecb6 | 187 | ocfs2_inode_unlock(dir, 0); |
ccd979bd MF |
188 | |
189 | bail: | |
ccd979bd | 190 | |
8990e44a | 191 | trace_ocfs2_lookup_ret(ret); |
ccd979bd MF |
192 | |
193 | return ret; | |
194 | } | |
195 | ||
67697cbd | 196 | static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode) |
f5d36202 TY |
197 | { |
198 | struct inode *inode; | |
199 | ||
200 | inode = new_inode(dir->i_sb); | |
201 | if (!inode) { | |
202 | mlog(ML_ERROR, "new_inode failed!\n"); | |
203 | return NULL; | |
204 | } | |
205 | ||
206 | /* populate as many fields early on as possible - many of | |
207 | * these are used by the support functions here and in | |
208 | * callers. */ | |
209 | if (S_ISDIR(mode)) | |
bfe86848 | 210 | set_nlink(inode, 2); |
75fe0a24 | 211 | inode_init_owner(inode, dir, mode); |
871a2931 | 212 | dquot_initialize(inode); |
f5d36202 TY |
213 | return inode; |
214 | } | |
215 | ||
595297a8 | 216 | static void ocfs2_cleanup_add_entry_failure(struct ocfs2_super *osb, |
217 | struct dentry *dentry, struct inode *inode) | |
218 | { | |
219 | struct ocfs2_dentry_lock *dl = dentry->d_fsdata; | |
220 | ||
221 | ocfs2_simple_drop_lockres(osb, &dl->dl_lockres); | |
222 | ocfs2_lock_res_free(&dl->dl_lockres); | |
223 | BUG_ON(dl->dl_count != 1); | |
224 | spin_lock(&dentry_attach_lock); | |
225 | dentry->d_fsdata = NULL; | |
226 | spin_unlock(&dentry_attach_lock); | |
227 | kfree(dl); | |
228 | iput(inode); | |
229 | } | |
230 | ||
ccd979bd MF |
231 | static int ocfs2_mknod(struct inode *dir, |
232 | struct dentry *dentry, | |
1a67aafb | 233 | umode_t mode, |
ccd979bd MF |
234 | dev_t dev) |
235 | { | |
236 | int status = 0; | |
237 | struct buffer_head *parent_fe_bh = NULL; | |
1fabe148 | 238 | handle_t *handle = NULL; |
ccd979bd MF |
239 | struct ocfs2_super *osb; |
240 | struct ocfs2_dinode *dirfe; | |
241 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
242 | struct inode *inode = NULL; |
243 | struct ocfs2_alloc_context *inode_ac = NULL; | |
244 | struct ocfs2_alloc_context *data_ac = NULL; | |
9b7895ef | 245 | struct ocfs2_alloc_context *meta_ac = NULL; |
534eaddd | 246 | int want_clusters = 0; |
9b7895ef | 247 | int want_meta = 0; |
534eaddd TY |
248 | int xattr_credits = 0; |
249 | struct ocfs2_security_xattr_info si = { | |
250 | .enable = 1, | |
251 | }; | |
a90714c1 | 252 | int did_quota_inode = 0; |
4a12ca3a | 253 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
254 | sigset_t oldset; |
255 | int did_block_signals = 0; | |
702e5bc6 | 256 | struct posix_acl *default_acl = NULL, *acl = NULL; |
595297a8 | 257 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 258 | |
8990e44a TM |
259 | trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
260 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
261 | (unsigned long)dev, mode); | |
ccd979bd | 262 | |
871a2931 | 263 | dquot_initialize(dir); |
907f4554 | 264 | |
ccd979bd MF |
265 | /* get our super block */ |
266 | osb = OCFS2_SB(dir->i_sb); | |
267 | ||
e63aecb6 | 268 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
e3a82138 MF |
269 | if (status < 0) { |
270 | if (status != -ENOENT) | |
271 | mlog_errno(status); | |
272 | return status; | |
273 | } | |
274 | ||
198a1ca3 | 275 | if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) { |
a663e305 MF |
276 | status = -EMLINK; |
277 | goto leave; | |
278 | } | |
279 | ||
ccd979bd | 280 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
198a1ca3 | 281 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
282 | /* can't make a file in a deleted directory. */ |
283 | status = -ENOENT; | |
284 | goto leave; | |
285 | } | |
286 | ||
287 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
288 | dentry->d_name.len); | |
289 | if (status) | |
290 | goto leave; | |
291 | ||
292 | /* get a spot inside the dir. */ | |
293 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
294 | dentry->d_name.name, | |
4a12ca3a | 295 | dentry->d_name.len, &lookup); |
ccd979bd MF |
296 | if (status < 0) { |
297 | mlog_errno(status); | |
298 | goto leave; | |
299 | } | |
300 | ||
301 | /* reserve an inode spot */ | |
da5cbf2f | 302 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
303 | if (status < 0) { |
304 | if (status != -ENOSPC) | |
305 | mlog_errno(status); | |
306 | goto leave; | |
307 | } | |
308 | ||
f5d36202 TY |
309 | inode = ocfs2_get_init_inode(dir, mode); |
310 | if (!inode) { | |
311 | status = -ENOMEM; | |
312 | mlog_errno(status); | |
313 | goto leave; | |
314 | } | |
315 | ||
534eaddd | 316 | /* get security xattr */ |
2a7dba39 | 317 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
318 | if (status) { |
319 | if (status == -EOPNOTSUPP) | |
320 | si.enable = 0; | |
321 | else { | |
322 | mlog_errno(status); | |
323 | goto leave; | |
324 | } | |
325 | } | |
326 | ||
89c38bd0 TY |
327 | /* calculate meta data/clusters for setting security and acl xattr */ |
328 | status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode, | |
9b7895ef MF |
329 | &si, &want_clusters, |
330 | &xattr_credits, &want_meta); | |
89c38bd0 TY |
331 | if (status < 0) { |
332 | mlog_errno(status); | |
333 | goto leave; | |
ccd979bd MF |
334 | } |
335 | ||
534eaddd | 336 | /* Reserve a cluster if creating an extent based directory. */ |
9b7895ef | 337 | if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) { |
534eaddd TY |
338 | want_clusters += 1; |
339 | ||
9b7895ef | 340 | /* Dir indexing requires extra space as well */ |
4ed8a6bb | 341 | if (ocfs2_supports_indexed_dirs(osb)) |
9b7895ef | 342 | want_meta++; |
9b7895ef MF |
343 | } |
344 | ||
345 | status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac); | |
346 | if (status < 0) { | |
347 | if (status != -ENOSPC) | |
348 | mlog_errno(status); | |
349 | goto leave; | |
350 | } | |
351 | ||
534eaddd TY |
352 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); |
353 | if (status < 0) { | |
354 | if (status != -ENOSPC) | |
355 | mlog_errno(status); | |
356 | goto leave; | |
357 | } | |
358 | ||
702e5bc6 CH |
359 | status = posix_acl_create(dir, &mode, &default_acl, &acl); |
360 | if (status) { | |
361 | mlog_errno(status); | |
362 | goto leave; | |
363 | } | |
364 | ||
9b7895ef MF |
365 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, |
366 | S_ISDIR(mode), | |
367 | xattr_credits)); | |
ccd979bd MF |
368 | if (IS_ERR(handle)) { |
369 | status = PTR_ERR(handle); | |
370 | handle = NULL; | |
371 | mlog_errno(status); | |
372 | goto leave; | |
373 | } | |
374 | ||
547ba7c8 JB |
375 | /* Starting to change things, restart is no longer possible. */ |
376 | ocfs2_block_signals(&oldset); | |
377 | did_block_signals = 1; | |
378 | ||
63936dda CH |
379 | status = dquot_alloc_inode(inode); |
380 | if (status) | |
a90714c1 | 381 | goto leave; |
a90714c1 JK |
382 | did_quota_inode = 1; |
383 | ||
ccd979bd | 384 | /* do the real work now. */ |
19bd341f | 385 | status = ocfs2_mknod_locked(osb, dir, inode, dev, |
ccd979bd | 386 | &new_fe_bh, parent_fe_bh, handle, |
f5d36202 | 387 | inode_ac); |
ccd979bd MF |
388 | if (status < 0) { |
389 | mlog_errno(status); | |
390 | goto leave; | |
391 | } | |
392 | ||
393 | if (S_ISDIR(mode)) { | |
394 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, | |
9b7895ef | 395 | new_fe_bh, data_ac, meta_ac); |
ccd979bd MF |
396 | if (status < 0) { |
397 | mlog_errno(status); | |
398 | goto leave; | |
399 | } | |
400 | ||
0cf2f763 JB |
401 | status = ocfs2_journal_access_di(handle, INODE_CACHE(dir), |
402 | parent_fe_bh, | |
13723d00 | 403 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
404 | if (status < 0) { |
405 | mlog_errno(status); | |
406 | goto leave; | |
407 | } | |
198a1ca3 | 408 | ocfs2_add_links_count(dirfe, 1); |
ec20cec7 | 409 | ocfs2_journal_dirty(handle, parent_fe_bh); |
d8c76e6f | 410 | inc_nlink(dir); |
ccd979bd MF |
411 | } |
412 | ||
702e5bc6 CH |
413 | if (default_acl) { |
414 | status = ocfs2_set_acl(handle, inode, new_fe_bh, | |
415 | ACL_TYPE_DEFAULT, default_acl, | |
416 | meta_ac, data_ac); | |
417 | } | |
418 | if (!status && acl) { | |
419 | status = ocfs2_set_acl(handle, inode, new_fe_bh, | |
420 | ACL_TYPE_ACCESS, acl, | |
421 | meta_ac, data_ac); | |
422 | } | |
423 | ||
89c38bd0 TY |
424 | if (status < 0) { |
425 | mlog_errno(status); | |
426 | goto leave; | |
427 | } | |
428 | ||
534eaddd TY |
429 | if (si.enable) { |
430 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
9b7895ef | 431 | meta_ac, data_ac); |
534eaddd TY |
432 | if (status < 0) { |
433 | mlog_errno(status); | |
434 | goto leave; | |
435 | } | |
436 | } | |
437 | ||
a9743fcd MF |
438 | /* |
439 | * Do this before adding the entry to the directory. We add | |
440 | * also set d_op after success so that ->d_iput() will cleanup | |
441 | * the dentry lock even if ocfs2_add_entry() fails below. | |
442 | */ | |
443 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
444 | OCFS2_I(dir)->ip_blkno); | |
445 | if (status) { | |
ccd979bd MF |
446 | mlog_errno(status); |
447 | goto leave; | |
448 | } | |
449 | ||
595297a8 | 450 | dl = dentry->d_fsdata; |
451 | ||
a9743fcd MF |
452 | status = ocfs2_add_entry(handle, dentry, inode, |
453 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
454 | &lookup); | |
455 | if (status < 0) { | |
379dfe9d MF |
456 | mlog_errno(status); |
457 | goto leave; | |
458 | } | |
459 | ||
ccd979bd | 460 | insert_inode_hash(inode); |
ccd979bd MF |
461 | d_instantiate(dentry, inode); |
462 | status = 0; | |
463 | leave: | |
702e5bc6 CH |
464 | if (default_acl) |
465 | posix_acl_release(default_acl); | |
466 | if (acl) | |
467 | posix_acl_release(acl); | |
a90714c1 | 468 | if (status < 0 && did_quota_inode) |
63936dda | 469 | dquot_free_inode(inode); |
ccd979bd | 470 | if (handle) |
02dc1af4 | 471 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 472 | |
e63aecb6 | 473 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
474 | if (did_block_signals) |
475 | ocfs2_unblock_signals(&oldset); | |
e3a82138 | 476 | |
a81cb88b | 477 | brelse(new_fe_bh); |
a81cb88b | 478 | brelse(parent_fe_bh); |
534eaddd | 479 | kfree(si.value); |
ccd979bd | 480 | |
4a12ca3a MF |
481 | ocfs2_free_dir_lookup_result(&lookup); |
482 | ||
ccd979bd MF |
483 | if (inode_ac) |
484 | ocfs2_free_alloc_context(inode_ac); | |
485 | ||
486 | if (data_ac) | |
487 | ocfs2_free_alloc_context(data_ac); | |
488 | ||
9b7895ef MF |
489 | if (meta_ac) |
490 | ocfs2_free_alloc_context(meta_ac); | |
534eaddd | 491 | |
062d3403 LD |
492 | /* |
493 | * We should call iput after the i_mutex of the bitmap been | |
494 | * unlocked in ocfs2_free_alloc_context, or the | |
495 | * ocfs2_delete_inode will mutex_lock again. | |
496 | */ | |
497 | if ((status < 0) && inode) { | |
595297a8 | 498 | if (dl) |
499 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
500 | ||
062d3403 LD |
501 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
502 | clear_nlink(inode); | |
503 | iput(inode); | |
504 | } | |
505 | ||
c1e8d35e TM |
506 | if (status) |
507 | mlog_errno(status); | |
ccd979bd MF |
508 | |
509 | return status; | |
510 | } | |
511 | ||
021960ca MF |
512 | static int __ocfs2_mknod_locked(struct inode *dir, |
513 | struct inode *inode, | |
514 | dev_t dev, | |
515 | struct buffer_head **new_fe_bh, | |
516 | struct buffer_head *parent_fe_bh, | |
517 | handle_t *handle, | |
518 | struct ocfs2_alloc_context *inode_ac, | |
519 | u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit) | |
ccd979bd MF |
520 | { |
521 | int status = 0; | |
021960ca | 522 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
ccd979bd MF |
523 | struct ocfs2_dinode *fe = NULL; |
524 | struct ocfs2_extent_list *fel; | |
9b7895ef | 525 | u16 feat; |
2931cdcb | 526 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
ccd979bd | 527 | |
ccd979bd | 528 | *new_fe_bh = NULL; |
ccd979bd | 529 | |
ccd979bd MF |
530 | /* populate as many fields early on as possible - many of |
531 | * these are used by the support functions here and in | |
532 | * callers. */ | |
533 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
534 | OCFS2_I(inode)->ip_blkno = fe_blkno; | |
ccd979bd MF |
535 | spin_lock(&osb->osb_lock); |
536 | inode->i_generation = osb->s_next_generation++; | |
537 | spin_unlock(&osb->osb_lock); | |
538 | ||
539 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
540 | if (!*new_fe_bh) { | |
7391a294 | 541 | status = -ENOMEM; |
ccd979bd MF |
542 | mlog_errno(status); |
543 | goto leave; | |
544 | } | |
8cb471e8 | 545 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
ccd979bd | 546 | |
0cf2f763 JB |
547 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
548 | *new_fe_bh, | |
13723d00 | 549 | OCFS2_JOURNAL_ACCESS_CREATE); |
ccd979bd MF |
550 | if (status < 0) { |
551 | mlog_errno(status); | |
552 | goto leave; | |
553 | } | |
554 | ||
555 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
556 | memset(fe, 0, osb->sb->s_blocksize); | |
557 | ||
558 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
559 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
560 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
2b6cb576 | 561 | fe->i_suballoc_loc = cpu_to_le64(suballoc_loc); |
ccd979bd | 562 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); |
4d0ddb2c | 563 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
2c034176 EB |
564 | fe->i_uid = cpu_to_le32(i_uid_read(inode)); |
565 | fe->i_gid = cpu_to_le32(i_gid_read(inode)); | |
f5d36202 TY |
566 | fe->i_mode = cpu_to_le16(inode->i_mode); |
567 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 568 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
198a1ca3 MF |
569 | |
570 | ocfs2_set_links_count(fe, inode->i_nlink); | |
ccd979bd MF |
571 | |
572 | fe->i_last_eb_blk = 0; | |
573 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
13eb9887 | 574 | fe->i_flags |= cpu_to_le32(OCFS2_VALID_FL); |
ccd979bd MF |
575 | fe->i_atime = fe->i_ctime = fe->i_mtime = |
576 | cpu_to_le64(CURRENT_TIME.tv_sec); | |
577 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = | |
578 | cpu_to_le32(CURRENT_TIME.tv_nsec); | |
579 | fe->i_dtime = 0; | |
580 | ||
5b6a3a2b | 581 | /* |
9b7895ef MF |
582 | * If supported, directories start with inline data. If inline |
583 | * isn't supported, but indexing is, we start them as indexed. | |
5b6a3a2b | 584 | */ |
9b7895ef | 585 | feat = le16_to_cpu(fe->i_dyn_features); |
f5d36202 | 586 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
587 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
588 | ||
d9ae49d6 TY |
589 | fe->id2.i_data.id_count = cpu_to_le16( |
590 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); | |
5b6a3a2b MF |
591 | } else { |
592 | fel = &fe->id2.i_list; | |
593 | fel->l_tree_depth = 0; | |
594 | fel->l_next_free_rec = 0; | |
595 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
596 | } | |
ccd979bd | 597 | |
ec20cec7 | 598 | ocfs2_journal_dirty(handle, *new_fe_bh); |
ccd979bd | 599 | |
b657c95c | 600 | ocfs2_populate_inode(inode, fe, 1); |
0cf2f763 | 601 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
c271c5c2 SM |
602 | if (!ocfs2_mount_local(osb)) { |
603 | status = ocfs2_create_new_inode_locks(inode); | |
604 | if (status < 0) | |
605 | mlog_errno(status); | |
606 | } | |
ccd979bd | 607 | |
2931cdcb DW |
608 | oi->i_sync_tid = handle->h_transaction->t_tid; |
609 | oi->i_datasync_tid = handle->h_transaction->t_tid; | |
610 | ||
ccd979bd MF |
611 | leave: |
612 | if (status < 0) { | |
613 | if (*new_fe_bh) { | |
614 | brelse(*new_fe_bh); | |
615 | *new_fe_bh = NULL; | |
616 | } | |
ccd979bd MF |
617 | } |
618 | ||
c1e8d35e TM |
619 | if (status) |
620 | mlog_errno(status); | |
ccd979bd MF |
621 | return status; |
622 | } | |
623 | ||
021960ca MF |
624 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
625 | struct inode *dir, | |
626 | struct inode *inode, | |
627 | dev_t dev, | |
628 | struct buffer_head **new_fe_bh, | |
629 | struct buffer_head *parent_fe_bh, | |
630 | handle_t *handle, | |
631 | struct ocfs2_alloc_context *inode_ac) | |
632 | { | |
633 | int status = 0; | |
634 | u64 suballoc_loc, fe_blkno = 0; | |
635 | u16 suballoc_bit; | |
636 | ||
637 | *new_fe_bh = NULL; | |
638 | ||
639 | status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh, | |
640 | inode_ac, &suballoc_loc, | |
641 | &suballoc_bit, &fe_blkno); | |
642 | if (status < 0) { | |
643 | mlog_errno(status); | |
644 | return status; | |
645 | } | |
646 | ||
647 | return __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh, | |
648 | parent_fe_bh, handle, inode_ac, | |
649 | fe_blkno, suballoc_loc, suballoc_bit); | |
650 | } | |
651 | ||
ccd979bd MF |
652 | static int ocfs2_mkdir(struct inode *dir, |
653 | struct dentry *dentry, | |
18bb1db3 | 654 | umode_t mode) |
ccd979bd MF |
655 | { |
656 | int ret; | |
657 | ||
8990e44a TM |
658 | trace_ocfs2_mkdir(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
659 | OCFS2_I(dir)->ip_blkno, mode); | |
ccd979bd | 660 | ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0); |
c1e8d35e TM |
661 | if (ret) |
662 | mlog_errno(ret); | |
ccd979bd MF |
663 | |
664 | return ret; | |
665 | } | |
666 | ||
667 | static int ocfs2_create(struct inode *dir, | |
668 | struct dentry *dentry, | |
4acdaf27 | 669 | umode_t mode, |
ebfc3b49 | 670 | bool excl) |
ccd979bd MF |
671 | { |
672 | int ret; | |
673 | ||
8990e44a TM |
674 | trace_ocfs2_create(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
675 | (unsigned long long)OCFS2_I(dir)->ip_blkno, mode); | |
ccd979bd | 676 | ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0); |
c1e8d35e TM |
677 | if (ret) |
678 | mlog_errno(ret); | |
ccd979bd MF |
679 | |
680 | return ret; | |
681 | } | |
682 | ||
683 | static int ocfs2_link(struct dentry *old_dentry, | |
684 | struct inode *dir, | |
685 | struct dentry *dentry) | |
686 | { | |
1fabe148 | 687 | handle_t *handle; |
ccd979bd | 688 | struct inode *inode = old_dentry->d_inode; |
53dc20b9 | 689 | struct inode *old_dir = old_dentry->d_parent->d_inode; |
ccd979bd MF |
690 | int err; |
691 | struct buffer_head *fe_bh = NULL; | |
53dc20b9 | 692 | struct buffer_head *old_dir_bh = NULL; |
ccd979bd | 693 | struct buffer_head *parent_fe_bh = NULL; |
ccd979bd MF |
694 | struct ocfs2_dinode *fe = NULL; |
695 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
4a12ca3a | 696 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 | 697 | sigset_t oldset; |
0e048316 | 698 | u64 old_de_ino; |
ccd979bd | 699 | |
8990e44a TM |
700 | trace_ocfs2_link((unsigned long long)OCFS2_I(inode)->ip_blkno, |
701 | old_dentry->d_name.len, old_dentry->d_name.name, | |
702 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 703 | |
123a9643 MF |
704 | if (S_ISDIR(inode->i_mode)) |
705 | return -EPERM; | |
ccd979bd | 706 | |
871a2931 | 707 | dquot_initialize(dir); |
907f4554 | 708 | |
53dc20b9 X |
709 | err = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
710 | &parent_fe_bh, dir, 0); | |
ccd979bd MF |
711 | if (err < 0) { |
712 | if (err != -ENOENT) | |
713 | mlog_errno(err); | |
123a9643 | 714 | return err; |
ccd979bd MF |
715 | } |
716 | ||
53dc20b9 X |
717 | /* make sure both dirs have bhs |
718 | * get an extra ref on old_dir_bh if old==new */ | |
719 | if (!parent_fe_bh) { | |
720 | if (old_dir_bh) { | |
721 | parent_fe_bh = old_dir_bh; | |
722 | get_bh(parent_fe_bh); | |
723 | } else { | |
724 | mlog(ML_ERROR, "%s: no old_dir_bh!\n", osb->uuid_str); | |
725 | err = -EIO; | |
726 | goto out; | |
727 | } | |
728 | } | |
729 | ||
0f62de2c TY |
730 | if (!dir->i_nlink) { |
731 | err = -ENOENT; | |
123a9643 | 732 | goto out; |
0f62de2c TY |
733 | } |
734 | ||
53dc20b9 | 735 | err = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
0e048316 X |
736 | old_dentry->d_name.len, &old_de_ino); |
737 | if (err) { | |
738 | err = -ENOENT; | |
739 | goto out; | |
740 | } | |
741 | ||
742 | /* | |
743 | * Check whether another node removed the source inode while we | |
744 | * were in the vfs. | |
745 | */ | |
746 | if (old_de_ino != OCFS2_I(inode)->ip_blkno) { | |
747 | err = -ENOENT; | |
748 | goto out; | |
749 | } | |
750 | ||
ccd979bd MF |
751 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
752 | dentry->d_name.len); | |
753 | if (err) | |
123a9643 | 754 | goto out; |
ccd979bd MF |
755 | |
756 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
757 | dentry->d_name.name, | |
4a12ca3a | 758 | dentry->d_name.len, &lookup); |
ccd979bd MF |
759 | if (err < 0) { |
760 | mlog_errno(err); | |
123a9643 | 761 | goto out; |
ccd979bd MF |
762 | } |
763 | ||
e63aecb6 | 764 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
765 | if (err < 0) { |
766 | if (err != -ENOENT) | |
767 | mlog_errno(err); | |
123a9643 | 768 | goto out; |
ccd979bd MF |
769 | } |
770 | ||
771 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
198a1ca3 | 772 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
ccd979bd | 773 | err = -EMLINK; |
123a9643 | 774 | goto out_unlock_inode; |
ccd979bd MF |
775 | } |
776 | ||
a90714c1 | 777 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
778 | if (IS_ERR(handle)) { |
779 | err = PTR_ERR(handle); | |
780 | handle = NULL; | |
781 | mlog_errno(err); | |
123a9643 | 782 | goto out_unlock_inode; |
ccd979bd MF |
783 | } |
784 | ||
547ba7c8 JB |
785 | /* Starting to change things, restart is no longer possible. */ |
786 | ocfs2_block_signals(&oldset); | |
787 | ||
0cf2f763 | 788 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 789 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
790 | if (err < 0) { |
791 | mlog_errno(err); | |
123a9643 | 792 | goto out_commit; |
ccd979bd MF |
793 | } |
794 | ||
d8c76e6f | 795 | inc_nlink(inode); |
ccd979bd | 796 | inode->i_ctime = CURRENT_TIME; |
198a1ca3 | 797 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
798 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
799 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
ec20cec7 | 800 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd MF |
801 | |
802 | err = ocfs2_add_entry(handle, dentry, inode, | |
803 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 804 | parent_fe_bh, &lookup); |
ccd979bd | 805 | if (err) { |
198a1ca3 | 806 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 807 | drop_nlink(inode); |
ccd979bd | 808 | mlog_errno(err); |
123a9643 | 809 | goto out_commit; |
ccd979bd MF |
810 | } |
811 | ||
0027dd5b | 812 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
813 | if (err) { |
814 | mlog_errno(err); | |
123a9643 | 815 | goto out_commit; |
379dfe9d MF |
816 | } |
817 | ||
7de9c6ee | 818 | ihold(inode); |
ccd979bd | 819 | d_instantiate(dentry, inode); |
123a9643 MF |
820 | |
821 | out_commit: | |
02dc1af4 | 822 | ocfs2_commit_trans(osb, handle); |
547ba7c8 | 823 | ocfs2_unblock_signals(&oldset); |
123a9643 | 824 | out_unlock_inode: |
e63aecb6 | 825 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
826 | |
827 | out: | |
53dc20b9 | 828 | ocfs2_double_unlock(old_dir, dir); |
123a9643 | 829 | |
a81cb88b MF |
830 | brelse(fe_bh); |
831 | brelse(parent_fe_bh); | |
53dc20b9 | 832 | brelse(old_dir_bh); |
ccd979bd | 833 | |
4a12ca3a MF |
834 | ocfs2_free_dir_lookup_result(&lookup); |
835 | ||
c1e8d35e TM |
836 | if (err) |
837 | mlog_errno(err); | |
ccd979bd MF |
838 | |
839 | return err; | |
840 | } | |
841 | ||
379dfe9d MF |
842 | /* |
843 | * Takes and drops an exclusive lock on the given dentry. This will | |
844 | * force other nodes to drop it. | |
845 | */ | |
846 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
847 | { | |
848 | int ret; | |
849 | ||
850 | ret = ocfs2_dentry_lock(dentry, 1); | |
851 | if (ret) | |
852 | mlog_errno(ret); | |
853 | else | |
854 | ocfs2_dentry_unlock(dentry, 1); | |
855 | ||
856 | return ret; | |
857 | } | |
858 | ||
b5a8bb71 | 859 | static inline int ocfs2_inode_is_unlinkable(struct inode *inode) |
17ff7856 MF |
860 | { |
861 | if (S_ISDIR(inode->i_mode)) { | |
862 | if (inode->i_nlink == 2) | |
863 | return 1; | |
864 | return 0; | |
865 | } | |
866 | ||
867 | if (inode->i_nlink == 1) | |
868 | return 1; | |
869 | return 0; | |
870 | } | |
871 | ||
ccd979bd MF |
872 | static int ocfs2_unlink(struct inode *dir, |
873 | struct dentry *dentry) | |
874 | { | |
875 | int status; | |
30a4f5e8 | 876 | int child_locked = 0; |
b5a8bb71 | 877 | bool is_unlinkable = false; |
ccd979bd | 878 | struct inode *inode = dentry->d_inode; |
5098c27b | 879 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
880 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
881 | u64 blkno; | |
882 | struct ocfs2_dinode *fe = NULL; | |
883 | struct buffer_head *fe_bh = NULL; | |
884 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 885 | handle_t *handle = NULL; |
ccd979bd | 886 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
887 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
888 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd | 889 | |
8990e44a TM |
890 | trace_ocfs2_unlink(dir, dentry, dentry->d_name.len, |
891 | dentry->d_name.name, | |
892 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
893 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 894 | |
871a2931 | 895 | dquot_initialize(dir); |
907f4554 | 896 | |
ccd979bd MF |
897 | BUG_ON(dentry->d_parent->d_inode != dir); |
898 | ||
8990e44a | 899 | if (inode == osb->root_inode) |
30a4f5e8 | 900 | return -EPERM; |
ccd979bd | 901 | |
cb25797d JK |
902 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
903 | OI_LS_PARENT); | |
ccd979bd MF |
904 | if (status < 0) { |
905 | if (status != -ENOENT) | |
906 | mlog_errno(status); | |
30a4f5e8 | 907 | return status; |
ccd979bd MF |
908 | } |
909 | ||
910 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
911 | dentry->d_name.len, &blkno, dir, |
912 | &lookup); | |
ccd979bd MF |
913 | if (status < 0) { |
914 | if (status != -ENOENT) | |
915 | mlog_errno(status); | |
916 | goto leave; | |
917 | } | |
918 | ||
919 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
920 | status = -ENOENT; | |
921 | ||
8990e44a TM |
922 | trace_ocfs2_unlink_noent( |
923 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
924 | (unsigned long long)blkno, | |
925 | OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
926 | goto leave; |
927 | } | |
928 | ||
e63aecb6 | 929 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
930 | if (status < 0) { |
931 | if (status != -ENOENT) | |
932 | mlog_errno(status); | |
933 | goto leave; | |
934 | } | |
30a4f5e8 | 935 | child_locked = 1; |
ccd979bd MF |
936 | |
937 | if (S_ISDIR(inode->i_mode)) { | |
b80b549c | 938 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
ccd979bd MF |
939 | status = -ENOTEMPTY; |
940 | goto leave; | |
941 | } | |
942 | } | |
943 | ||
379dfe9d | 944 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 945 | if (status < 0) { |
34d024f8 | 946 | /* This remote delete should succeed under all normal |
ccd979bd MF |
947 | * circumstances. */ |
948 | mlog_errno(status); | |
949 | goto leave; | |
950 | } | |
951 | ||
b5a8bb71 | 952 | if (ocfs2_inode_is_unlinkable(inode)) { |
19bd341f TM |
953 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
954 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 955 | orphan_name, &orphan_insert); |
ccd979bd MF |
956 | if (status < 0) { |
957 | mlog_errno(status); | |
958 | goto leave; | |
959 | } | |
b5a8bb71 | 960 | is_unlinkable = true; |
ccd979bd MF |
961 | } |
962 | ||
a90714c1 | 963 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
964 | if (IS_ERR(handle)) { |
965 | status = PTR_ERR(handle); | |
966 | handle = NULL; | |
967 | mlog_errno(status); | |
968 | goto leave; | |
969 | } | |
970 | ||
0cf2f763 | 971 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 972 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
973 | if (status < 0) { |
974 | mlog_errno(status); | |
975 | goto leave; | |
976 | } | |
977 | ||
978 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
979 | ||
ccd979bd | 980 | /* delete the name from the parent dir */ |
4a12ca3a | 981 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
982 | if (status < 0) { |
983 | mlog_errno(status); | |
984 | goto leave; | |
985 | } | |
986 | ||
17ff7856 MF |
987 | if (S_ISDIR(inode->i_mode)) |
988 | drop_nlink(inode); | |
989 | drop_nlink(inode); | |
198a1ca3 | 990 | ocfs2_set_links_count(fe, inode->i_nlink); |
ec20cec7 | 991 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd | 992 | |
592282cf MF |
993 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; |
994 | if (S_ISDIR(inode->i_mode)) | |
17ff7856 | 995 | drop_nlink(dir); |
592282cf MF |
996 | |
997 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
998 | if (status < 0) { | |
999 | mlog_errno(status); | |
1000 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 1001 | inc_nlink(dir); |
b5a8bb71 YL |
1002 | goto leave; |
1003 | } | |
1004 | ||
1005 | if (is_unlinkable) { | |
1006 | status = ocfs2_orphan_add(osb, handle, inode, fe_bh, | |
1007 | orphan_name, &orphan_insert, orphan_dir); | |
1008 | if (status < 0) | |
1009 | mlog_errno(status); | |
ccd979bd MF |
1010 | } |
1011 | ||
1012 | leave: | |
ccd979bd | 1013 | if (handle) |
02dc1af4 | 1014 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1015 | |
30a4f5e8 | 1016 | if (child_locked) |
e63aecb6 | 1017 | ocfs2_inode_unlock(inode, 1); |
30a4f5e8 | 1018 | |
e63aecb6 | 1019 | ocfs2_inode_unlock(dir, 1); |
30a4f5e8 | 1020 | |
5098c27b MF |
1021 | if (orphan_dir) { |
1022 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1023 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
1024 | mutex_unlock(&orphan_dir->i_mutex); |
1025 | iput(orphan_dir); | |
1026 | } | |
1027 | ||
a81cb88b | 1028 | brelse(fe_bh); |
a81cb88b | 1029 | brelse(parent_node_bh); |
4a12ca3a MF |
1030 | |
1031 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1032 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd | 1033 | |
f5b25855 | 1034 | if (status && (status != -ENOTEMPTY) && (status != -ENOENT)) |
c1e8d35e | 1035 | mlog_errno(status); |
ccd979bd MF |
1036 | |
1037 | return status; | |
1038 | } | |
1039 | ||
f7a14f32 YJ |
1040 | static int ocfs2_check_if_ancestor(struct ocfs2_super *osb, |
1041 | u64 src_inode_no, u64 dest_inode_no) | |
1042 | { | |
1043 | int ret = 0, i = 0; | |
1044 | u64 parent_inode_no = 0; | |
1045 | u64 child_inode_no = src_inode_no; | |
1046 | struct inode *child_inode; | |
1047 | ||
1048 | #define MAX_LOOKUP_TIMES 32 | |
1049 | while (1) { | |
1050 | child_inode = ocfs2_iget(osb, child_inode_no, 0, 0); | |
1051 | if (IS_ERR(child_inode)) { | |
1052 | ret = PTR_ERR(child_inode); | |
1053 | break; | |
1054 | } | |
1055 | ||
1056 | ret = ocfs2_inode_lock(child_inode, NULL, 0); | |
1057 | if (ret < 0) { | |
1058 | iput(child_inode); | |
1059 | if (ret != -ENOENT) | |
1060 | mlog_errno(ret); | |
1061 | break; | |
1062 | } | |
1063 | ||
1064 | ret = ocfs2_lookup_ino_from_name(child_inode, "..", 2, | |
1065 | &parent_inode_no); | |
1066 | ocfs2_inode_unlock(child_inode, 0); | |
1067 | iput(child_inode); | |
1068 | if (ret < 0) { | |
1069 | ret = -ENOENT; | |
1070 | break; | |
1071 | } | |
1072 | ||
1073 | if (parent_inode_no == dest_inode_no) { | |
1074 | ret = 1; | |
1075 | break; | |
1076 | } | |
1077 | ||
1078 | if (parent_inode_no == osb->root_inode->i_ino) { | |
1079 | ret = 0; | |
1080 | break; | |
1081 | } | |
1082 | ||
1083 | child_inode_no = parent_inode_no; | |
1084 | ||
1085 | if (++i >= MAX_LOOKUP_TIMES) { | |
1086 | mlog(ML_NOTICE, "max lookup times reached, filesystem " | |
1087 | "may have nested directories, " | |
1088 | "src inode: %llu, dest inode: %llu.\n", | |
1089 | (unsigned long long)src_inode_no, | |
1090 | (unsigned long long)dest_inode_no); | |
1091 | ret = 0; | |
1092 | break; | |
1093 | } | |
1094 | } | |
1095 | ||
1096 | return ret; | |
1097 | } | |
1098 | ||
ccd979bd | 1099 | /* |
53dc20b9 | 1100 | * The only place this should be used is rename and link! |
ccd979bd MF |
1101 | * if they have the same id, then the 1st one is the only one locked. |
1102 | */ | |
1103 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
1104 | struct buffer_head **bh1, |
1105 | struct inode *inode1, | |
1106 | struct buffer_head **bh2, | |
53dc20b9 X |
1107 | struct inode *inode2, |
1108 | int rename) | |
ccd979bd MF |
1109 | { |
1110 | int status; | |
f7a14f32 | 1111 | int inode1_is_ancestor, inode2_is_ancestor; |
ccd979bd MF |
1112 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); |
1113 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
1114 | struct buffer_head **tmpbh; | |
1115 | struct inode *tmpinode; | |
1116 | ||
8990e44a TM |
1117 | trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno, |
1118 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 1119 | |
ccd979bd MF |
1120 | if (*bh1) |
1121 | *bh1 = NULL; | |
1122 | if (*bh2) | |
1123 | *bh2 = NULL; | |
1124 | ||
f7a14f32 YJ |
1125 | /* we always want to lock the one with the lower lockid first. |
1126 | * and if they are nested, we lock ancestor first */ | |
ccd979bd | 1127 | if (oi1->ip_blkno != oi2->ip_blkno) { |
f7a14f32 YJ |
1128 | inode1_is_ancestor = ocfs2_check_if_ancestor(osb, oi2->ip_blkno, |
1129 | oi1->ip_blkno); | |
1130 | if (inode1_is_ancestor < 0) { | |
1131 | status = inode1_is_ancestor; | |
1132 | goto bail; | |
1133 | } | |
1134 | ||
1135 | inode2_is_ancestor = ocfs2_check_if_ancestor(osb, oi1->ip_blkno, | |
1136 | oi2->ip_blkno); | |
1137 | if (inode2_is_ancestor < 0) { | |
1138 | status = inode2_is_ancestor; | |
1139 | goto bail; | |
1140 | } | |
1141 | ||
1142 | if ((inode1_is_ancestor == 1) || | |
1143 | (oi1->ip_blkno < oi2->ip_blkno && | |
1144 | inode2_is_ancestor == 0)) { | |
ccd979bd | 1145 | /* switch id1 and id2 around */ |
ccd979bd MF |
1146 | tmpbh = bh2; |
1147 | bh2 = bh1; | |
1148 | bh1 = tmpbh; | |
1149 | ||
1150 | tmpinode = inode2; | |
1151 | inode2 = inode1; | |
1152 | inode1 = tmpinode; | |
1153 | } | |
1154 | /* lock id2 */ | |
cb25797d | 1155 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
53dc20b9 | 1156 | rename == 1 ? OI_LS_RENAME1 : OI_LS_PARENT); |
ccd979bd MF |
1157 | if (status < 0) { |
1158 | if (status != -ENOENT) | |
1159 | mlog_errno(status); | |
1160 | goto bail; | |
1161 | } | |
1162 | } | |
8d5596c6 | 1163 | |
ccd979bd | 1164 | /* lock id1 */ |
53dc20b9 X |
1165 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, |
1166 | rename == 1 ? OI_LS_RENAME2 : OI_LS_PARENT); | |
ccd979bd | 1167 | if (status < 0) { |
8d5596c6 MF |
1168 | /* |
1169 | * An error return must mean that no cluster locks | |
1170 | * were held on function exit. | |
1171 | */ | |
1e6d9153 | 1172 | if (oi1->ip_blkno != oi2->ip_blkno) { |
e63aecb6 | 1173 | ocfs2_inode_unlock(inode2, 1); |
1e6d9153 TM |
1174 | brelse(*bh2); |
1175 | *bh2 = NULL; | |
1176 | } | |
8d5596c6 | 1177 | |
ccd979bd MF |
1178 | if (status != -ENOENT) |
1179 | mlog_errno(status); | |
ccd979bd | 1180 | } |
8d5596c6 | 1181 | |
8990e44a TM |
1182 | trace_ocfs2_double_lock_end( |
1183 | (unsigned long long)OCFS2_I(inode1)->ip_blkno, | |
1184 | (unsigned long long)OCFS2_I(inode2)->ip_blkno); | |
1185 | ||
ccd979bd | 1186 | bail: |
c1e8d35e TM |
1187 | if (status) |
1188 | mlog_errno(status); | |
ccd979bd MF |
1189 | return status; |
1190 | } | |
1191 | ||
8d5596c6 MF |
1192 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
1193 | { | |
e63aecb6 | 1194 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
1195 | |
1196 | if (inode1 != inode2) | |
e63aecb6 | 1197 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1198 | } |
1199 | ||
ccd979bd MF |
1200 | static int ocfs2_rename(struct inode *old_dir, |
1201 | struct dentry *old_dentry, | |
1202 | struct inode *new_dir, | |
1203 | struct dentry *new_dentry) | |
1204 | { | |
4a12ca3a MF |
1205 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1206 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
ccd979bd MF |
1207 | struct inode *old_inode = old_dentry->d_inode; |
1208 | struct inode *new_inode = new_dentry->d_inode; | |
5098c27b | 1209 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1210 | struct ocfs2_dinode *newfe = NULL; |
1211 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
ccd979bd | 1212 | struct buffer_head *newfe_bh = NULL; |
592282cf | 1213 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd | 1214 | struct ocfs2_super *osb = NULL; |
5b6a3a2b | 1215 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1216 | handle_t *handle = NULL; |
ccd979bd MF |
1217 | struct buffer_head *old_dir_bh = NULL; |
1218 | struct buffer_head *new_dir_bh = NULL; | |
847c9db5 | 1219 | u32 old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1220 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1221 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1222 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1223 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1224 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1225 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
5fb1beb0 | 1226 | bool should_add_orphan = false; |
ccd979bd MF |
1227 | |
1228 | /* At some point it might be nice to break this function up a | |
1229 | * bit. */ | |
1230 | ||
8990e44a TM |
1231 | trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry, |
1232 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1233 | new_dentry->d_name.len, new_dentry->d_name.name); | |
ccd979bd | 1234 | |
871a2931 CH |
1235 | dquot_initialize(old_dir); |
1236 | dquot_initialize(new_dir); | |
907f4554 | 1237 | |
ccd979bd MF |
1238 | osb = OCFS2_SB(old_dir->i_sb); |
1239 | ||
1240 | if (new_inode) { | |
1241 | if (!igrab(new_inode)) | |
1242 | BUG(); | |
1243 | } | |
1244 | ||
1b3c3714 | 1245 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1246 | * a/b/c |
1247 | * a/d | |
1248 | * a,b,c, and d are all directories. | |
1249 | * | |
1250 | * from cwd of 'a' on both nodes: | |
1251 | * node1: mv b/c d | |
1252 | * node2: mv d b/c | |
1253 | * | |
1254 | * And that's why, just like the VFS, we need a file system | |
1255 | * rename lock. */ | |
5dabd695 | 1256 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1257 | status = ocfs2_rename_lock(osb); |
1258 | if (status < 0) { | |
1259 | mlog_errno(status); | |
1260 | goto bail; | |
1261 | } | |
1262 | rename_lock = 1; | |
f7a14f32 YJ |
1263 | |
1264 | /* here we cannot guarantee the inodes haven't just been | |
1265 | * changed, so check if they are nested again */ | |
1266 | status = ocfs2_check_if_ancestor(osb, new_dir->i_ino, | |
1267 | old_inode->i_ino); | |
1268 | if (status < 0) { | |
1269 | mlog_errno(status); | |
1270 | goto bail; | |
1271 | } else if (status == 1) { | |
1272 | status = -EPERM; | |
1273 | trace_ocfs2_rename_not_permitted( | |
1274 | (unsigned long long)old_inode->i_ino, | |
1275 | (unsigned long long)new_dir->i_ino); | |
1276 | goto bail; | |
1277 | } | |
ccd979bd MF |
1278 | } |
1279 | ||
ccd979bd | 1280 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 | 1281 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
53dc20b9 | 1282 | &new_dir_bh, new_dir, 1); |
ccd979bd MF |
1283 | if (status < 0) { |
1284 | mlog_errno(status); | |
1285 | goto bail; | |
1286 | } | |
8d5596c6 | 1287 | parents_locked = 1; |
ccd979bd MF |
1288 | |
1289 | /* make sure both dirs have bhs | |
1290 | * get an extra ref on old_dir_bh if old==new */ | |
1291 | if (!new_dir_bh) { | |
1292 | if (old_dir_bh) { | |
1293 | new_dir_bh = old_dir_bh; | |
1294 | get_bh(new_dir_bh); | |
1295 | } else { | |
1296 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1297 | status = -EIO; | |
1298 | goto bail; | |
1299 | } | |
1300 | } | |
1301 | ||
379dfe9d | 1302 | /* |
592282cf | 1303 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1304 | * also ensures that the downconvert thread on other nodes |
1305 | * won't have to concurrently downconvert the inode and the | |
1306 | * dentry locks. | |
379dfe9d | 1307 | */ |
cb25797d JK |
1308 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
1309 | OI_LS_PARENT); | |
379dfe9d MF |
1310 | if (status < 0) { |
1311 | if (status != -ENOENT) | |
ccd979bd | 1312 | mlog_errno(status); |
379dfe9d MF |
1313 | goto bail; |
1314 | } | |
8d5596c6 | 1315 | old_child_locked = 1; |
ccd979bd | 1316 | |
379dfe9d MF |
1317 | status = ocfs2_remote_dentry_delete(old_dentry); |
1318 | if (status < 0) { | |
1319 | mlog_errno(status); | |
1320 | goto bail; | |
1321 | } | |
1322 | ||
1323 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1324 | u64 old_inode_parent; |
1325 | ||
4a12ca3a | 1326 | update_dot_dot = 1; |
38760e24 | 1327 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1328 | old_inode, |
1329 | &old_inode_dot_dot_res); | |
38760e24 MF |
1330 | if (status) { |
1331 | status = -EIO; | |
ccd979bd | 1332 | goto bail; |
38760e24 | 1333 | } |
ccd979bd | 1334 | |
38760e24 MF |
1335 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1336 | status = -EIO; | |
ccd979bd | 1337 | goto bail; |
38760e24 MF |
1338 | } |
1339 | ||
1340 | if (!new_inode && new_dir != old_dir && | |
198a1ca3 | 1341 | new_dir->i_nlink >= ocfs2_link_max(osb)) { |
38760e24 | 1342 | status = -EMLINK; |
ccd979bd | 1343 | goto bail; |
38760e24 | 1344 | } |
ccd979bd MF |
1345 | } |
1346 | ||
5b6a3a2b MF |
1347 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1348 | old_dentry->d_name.len, | |
1349 | &old_de_ino); | |
1350 | if (status) { | |
1351 | status = -ENOENT; | |
ccd979bd | 1352 | goto bail; |
5b6a3a2b | 1353 | } |
ccd979bd MF |
1354 | |
1355 | /* | |
1356 | * Check for inode number is _not_ due to possible IO errors. | |
1357 | * We might rmdir the source, keep it as pwd of some process | |
1358 | * and merrily kill the link to whatever was created under the | |
1359 | * same name. Goodbye sticky bit ;-< | |
1360 | */ | |
5b6a3a2b MF |
1361 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1362 | status = -ENOENT; | |
ccd979bd | 1363 | goto bail; |
5b6a3a2b | 1364 | } |
ccd979bd MF |
1365 | |
1366 | /* check if the target already exists (in which case we need | |
1367 | * to delete it */ | |
1368 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1369 | new_dentry->d_name.len, | |
4a12ca3a MF |
1370 | &newfe_blkno, new_dir, |
1371 | &target_lookup_res); | |
ccd979bd MF |
1372 | /* The only error we allow here is -ENOENT because the new |
1373 | * file not existing is perfectly valid. */ | |
1374 | if ((status < 0) && (status != -ENOENT)) { | |
1375 | /* If we cannot find the file specified we should just */ | |
1376 | /* return the error... */ | |
1377 | mlog_errno(status); | |
1378 | goto bail; | |
1379 | } | |
4a12ca3a MF |
1380 | if (status == 0) |
1381 | target_exists = 1; | |
ccd979bd | 1382 | |
4a12ca3a | 1383 | if (!target_exists && new_inode) { |
e325a88f SE |
1384 | /* |
1385 | * Target was unlinked by another node while we were | |
1386 | * waiting to get to ocfs2_rename(). There isn't | |
1387 | * anything we can do here to help the situation, so | |
1388 | * bubble up the appropriate error. | |
1389 | */ | |
1390 | status = -ENOENT; | |
1391 | goto bail; | |
1392 | } | |
ccd979bd MF |
1393 | |
1394 | /* In case we need to overwrite an existing file, we blow it | |
1395 | * away first */ | |
4a12ca3a | 1396 | if (target_exists) { |
ccd979bd MF |
1397 | /* VFS didn't think there existed an inode here, but |
1398 | * someone else in the cluster must have raced our | |
1399 | * rename to create one. Today we error cleanly, in | |
1400 | * the future we should consider calling iget to build | |
1401 | * a new struct inode for this entry. */ | |
1402 | if (!new_inode) { | |
1403 | status = -EACCES; | |
1404 | ||
8990e44a TM |
1405 | trace_ocfs2_rename_target_exists(new_dentry->d_name.len, |
1406 | new_dentry->d_name.name); | |
ccd979bd MF |
1407 | goto bail; |
1408 | } | |
1409 | ||
1410 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1411 | status = -EACCES; | |
1412 | ||
8990e44a | 1413 | trace_ocfs2_rename_disagree( |
b0697053 MF |
1414 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, |
1415 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1416 | OCFS2_I(new_inode)->ip_flags); |
1417 | goto bail; | |
1418 | } | |
1419 | ||
e63aecb6 | 1420 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1421 | if (status < 0) { |
1422 | if (status != -ENOENT) | |
1423 | mlog_errno(status); | |
1424 | goto bail; | |
1425 | } | |
8d5596c6 | 1426 | new_child_locked = 1; |
ccd979bd | 1427 | |
379dfe9d | 1428 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1429 | if (status < 0) { |
1430 | mlog_errno(status); | |
1431 | goto bail; | |
1432 | } | |
1433 | ||
1434 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1435 | ||
8990e44a | 1436 | trace_ocfs2_rename_over_existing( |
b0697053 | 1437 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1438 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1439 | ||
1440 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1441 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
19bd341f TM |
1442 | OCFS2_I(new_inode)->ip_blkno, |
1443 | orphan_name, &orphan_insert); | |
ccd979bd MF |
1444 | if (status < 0) { |
1445 | mlog_errno(status); | |
1446 | goto bail; | |
1447 | } | |
5fb1beb0 | 1448 | should_add_orphan = true; |
ccd979bd MF |
1449 | } |
1450 | } else { | |
1451 | BUG_ON(new_dentry->d_parent->d_inode != new_dir); | |
1452 | ||
1453 | status = ocfs2_check_dir_for_entry(new_dir, | |
1454 | new_dentry->d_name.name, | |
1455 | new_dentry->d_name.len); | |
1456 | if (status) | |
1457 | goto bail; | |
1458 | ||
1459 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1460 | new_dentry->d_name.name, | |
1461 | new_dentry->d_name.len, | |
4a12ca3a | 1462 | &target_insert); |
ccd979bd MF |
1463 | if (status < 0) { |
1464 | mlog_errno(status); | |
1465 | goto bail; | |
1466 | } | |
1467 | } | |
1468 | ||
a90714c1 | 1469 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1470 | if (IS_ERR(handle)) { |
1471 | status = PTR_ERR(handle); | |
1472 | handle = NULL; | |
1473 | mlog_errno(status); | |
1474 | goto bail; | |
1475 | } | |
1476 | ||
4a12ca3a | 1477 | if (target_exists) { |
ccd979bd | 1478 | if (S_ISDIR(new_inode->i_mode)) { |
b80b549c MF |
1479 | if (new_inode->i_nlink != 2 || |
1480 | !ocfs2_empty_dir(new_inode)) { | |
ccd979bd MF |
1481 | status = -ENOTEMPTY; |
1482 | goto bail; | |
1483 | } | |
1484 | } | |
0cf2f763 JB |
1485 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
1486 | newfe_bh, | |
13723d00 | 1487 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1488 | if (status < 0) { |
1489 | mlog_errno(status); | |
1490 | goto bail; | |
1491 | } | |
1492 | ||
ccd979bd | 1493 | /* change the dirent to point to the correct inode */ |
4a12ca3a MF |
1494 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1495 | old_inode); | |
ccd979bd MF |
1496 | if (status < 0) { |
1497 | mlog_errno(status); | |
1498 | goto bail; | |
1499 | } | |
ccd979bd | 1500 | new_dir->i_version++; |
ccd979bd MF |
1501 | |
1502 | if (S_ISDIR(new_inode->i_mode)) | |
198a1ca3 | 1503 | ocfs2_set_links_count(newfe, 0); |
ccd979bd | 1504 | else |
198a1ca3 | 1505 | ocfs2_add_links_count(newfe, -1); |
ec20cec7 | 1506 | ocfs2_journal_dirty(handle, newfe_bh); |
5fb1beb0 | 1507 | if (should_add_orphan) { |
1508 | status = ocfs2_orphan_add(osb, handle, new_inode, | |
1509 | newfe_bh, orphan_name, | |
1510 | &orphan_insert, orphan_dir); | |
1511 | if (status < 0) { | |
1512 | mlog_errno(status); | |
1513 | goto bail; | |
1514 | } | |
1515 | } | |
ccd979bd MF |
1516 | } else { |
1517 | /* if the name was not found in new_dir, add it now */ | |
1518 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1519 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1520 | new_dir_bh, &target_insert); |
ccd979bd MF |
1521 | } |
1522 | ||
1523 | old_inode->i_ctime = CURRENT_TIME; | |
1524 | mark_inode_dirty(old_inode); | |
480214d7 | 1525 | |
0cf2f763 JB |
1526 | status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), |
1527 | old_inode_bh, | |
13723d00 | 1528 | OCFS2_JOURNAL_ACCESS_WRITE); |
480214d7 SM |
1529 | if (status >= 0) { |
1530 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1531 | ||
1532 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); | |
1533 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); | |
ec20cec7 | 1534 | ocfs2_journal_dirty(handle, old_inode_bh); |
480214d7 SM |
1535 | } else |
1536 | mlog_errno(status); | |
ccd979bd | 1537 | |
5b6a3a2b MF |
1538 | /* |
1539 | * Now that the name has been added to new_dir, remove the old name. | |
1540 | * | |
1541 | * We don't keep any directory entry context around until now | |
1542 | * because the insert might have changed the type of directory | |
1543 | * we're dealing with. | |
1544 | */ | |
4a12ca3a MF |
1545 | status = ocfs2_find_entry(old_dentry->d_name.name, |
1546 | old_dentry->d_name.len, old_dir, | |
1547 | &old_entry_lookup); | |
1548 | if (status) | |
5b6a3a2b | 1549 | goto bail; |
5b6a3a2b | 1550 | |
4a12ca3a | 1551 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
ccd979bd MF |
1552 | if (status < 0) { |
1553 | mlog_errno(status); | |
1554 | goto bail; | |
1555 | } | |
1556 | ||
1557 | if (new_inode) { | |
6d6b77f1 | 1558 | drop_nlink(new_inode); |
ccd979bd MF |
1559 | new_inode->i_ctime = CURRENT_TIME; |
1560 | } | |
1561 | old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME; | |
4a12ca3a MF |
1562 | |
1563 | if (update_dot_dot) { | |
1564 | status = ocfs2_update_entry(old_inode, handle, | |
1565 | &old_inode_dot_dot_res, new_dir); | |
6d6b77f1 | 1566 | drop_nlink(old_dir); |
ccd979bd | 1567 | if (new_inode) { |
6d6b77f1 | 1568 | drop_nlink(new_inode); |
ccd979bd | 1569 | } else { |
d8c76e6f | 1570 | inc_nlink(new_dir); |
ccd979bd MF |
1571 | mark_inode_dirty(new_dir); |
1572 | } | |
1573 | } | |
1574 | mark_inode_dirty(old_dir); | |
592282cf MF |
1575 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1576 | if (new_inode) { | |
ccd979bd | 1577 | mark_inode_dirty(new_inode); |
592282cf MF |
1578 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1579 | } | |
ccd979bd | 1580 | |
592282cf MF |
1581 | if (old_dir != new_dir) { |
1582 | /* Keep the same times on both directories.*/ | |
1583 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; | |
1584 | ||
1585 | /* | |
1586 | * This will also pick up the i_nlink change from the | |
1587 | * block above. | |
1588 | */ | |
1589 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1590 | } | |
ccd979bd MF |
1591 | |
1592 | if (old_dir_nlink != old_dir->i_nlink) { | |
1593 | if (!old_dir_bh) { | |
1594 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1595 | "%llu from %d to %d but bh is NULL!\n", |
1596 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1597 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1598 | } else { |
1599 | struct ocfs2_dinode *fe; | |
0cf2f763 JB |
1600 | status = ocfs2_journal_access_di(handle, |
1601 | INODE_CACHE(old_dir), | |
1602 | old_dir_bh, | |
1603 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd | 1604 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
198a1ca3 | 1605 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
ec20cec7 | 1606 | ocfs2_journal_dirty(handle, old_dir_bh); |
ccd979bd MF |
1607 | } |
1608 | } | |
379dfe9d | 1609 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1610 | status = 0; |
1611 | bail: | |
1612 | if (rename_lock) | |
1613 | ocfs2_rename_unlock(osb); | |
1614 | ||
1615 | if (handle) | |
02dc1af4 | 1616 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1617 | |
8d5596c6 MF |
1618 | if (parents_locked) |
1619 | ocfs2_double_unlock(old_dir, new_dir); | |
1620 | ||
1621 | if (old_child_locked) | |
e63aecb6 | 1622 | ocfs2_inode_unlock(old_inode, 1); |
8d5596c6 MF |
1623 | |
1624 | if (new_child_locked) | |
e63aecb6 | 1625 | ocfs2_inode_unlock(new_inode, 1); |
8d5596c6 | 1626 | |
5098c27b MF |
1627 | if (orphan_dir) { |
1628 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1629 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
1630 | mutex_unlock(&orphan_dir->i_mutex); |
1631 | iput(orphan_dir); | |
1632 | } | |
1633 | ||
ccd979bd MF |
1634 | if (new_inode) |
1635 | sync_mapping_buffers(old_inode->i_mapping); | |
1636 | ||
1637 | if (new_inode) | |
1638 | iput(new_inode); | |
4a12ca3a MF |
1639 | |
1640 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1641 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1642 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1643 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1644 | ocfs2_free_dir_lookup_result(&target_insert); | |
1645 | ||
a81cb88b MF |
1646 | brelse(newfe_bh); |
1647 | brelse(old_inode_bh); | |
1648 | brelse(old_dir_bh); | |
1649 | brelse(new_dir_bh); | |
ccd979bd | 1650 | |
c1e8d35e TM |
1651 | if (status) |
1652 | mlog_errno(status); | |
ccd979bd MF |
1653 | |
1654 | return status; | |
1655 | } | |
1656 | ||
1657 | /* | |
1658 | * we expect i_size = strlen(symname). Copy symname into the file | |
1659 | * data, including the null terminator. | |
1660 | */ | |
1661 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1662 | handle_t *handle, |
ccd979bd MF |
1663 | struct inode *inode, |
1664 | const char *symname) | |
1665 | { | |
1666 | struct buffer_head **bhs = NULL; | |
1667 | const char *c; | |
1668 | struct super_block *sb = osb->sb; | |
4f902c37 | 1669 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1670 | int virtual, blocks, status, i, bytes_left; |
1671 | ||
1672 | bytes_left = i_size_read(inode) + 1; | |
1673 | /* we can't trust i_blocks because we're actually going to | |
1674 | * write i_size + 1 bytes. */ | |
1675 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1676 | ||
8990e44a TM |
1677 | trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks, |
1678 | i_size_read(inode), blocks); | |
ccd979bd MF |
1679 | |
1680 | /* Sanity check -- make sure we're going to fit. */ | |
1681 | if (bytes_left > | |
1682 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1683 | status = -EIO; | |
1684 | mlog_errno(status); | |
1685 | goto bail; | |
1686 | } | |
1687 | ||
1688 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1689 | if (!bhs) { | |
1690 | status = -ENOMEM; | |
1691 | mlog_errno(status); | |
1692 | goto bail; | |
1693 | } | |
1694 | ||
49cb8d2d MF |
1695 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1696 | NULL); | |
ccd979bd MF |
1697 | if (status < 0) { |
1698 | mlog_errno(status); | |
1699 | goto bail; | |
1700 | } | |
1701 | ||
1702 | /* links can never be larger than one cluster so we know this | |
1703 | * is all going to be contiguous, but do a sanity check | |
1704 | * anyway. */ | |
1705 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1706 | status = -EIO; | |
1707 | mlog_errno(status); | |
1708 | goto bail; | |
1709 | } | |
1710 | ||
1711 | virtual = 0; | |
1712 | while(bytes_left > 0) { | |
1713 | c = &symname[virtual * sb->s_blocksize]; | |
1714 | ||
1715 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1716 | if (!bhs[virtual]) { | |
1717 | status = -ENOMEM; | |
1718 | mlog_errno(status); | |
1719 | goto bail; | |
1720 | } | |
8cb471e8 JB |
1721 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
1722 | bhs[virtual]); | |
ccd979bd | 1723 | |
0cf2f763 JB |
1724 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
1725 | bhs[virtual], | |
ccd979bd MF |
1726 | OCFS2_JOURNAL_ACCESS_CREATE); |
1727 | if (status < 0) { | |
1728 | mlog_errno(status); | |
1729 | goto bail; | |
1730 | } | |
1731 | ||
1732 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1733 | ||
1734 | memcpy(bhs[virtual]->b_data, c, | |
1735 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1736 | bytes_left); | |
1737 | ||
ec20cec7 | 1738 | ocfs2_journal_dirty(handle, bhs[virtual]); |
ccd979bd MF |
1739 | |
1740 | virtual++; | |
1741 | p_blkno++; | |
1742 | bytes_left -= sb->s_blocksize; | |
1743 | } | |
1744 | ||
1745 | status = 0; | |
1746 | bail: | |
1747 | ||
1748 | if (bhs) { | |
1749 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1750 | brelse(bhs[i]); |
ccd979bd MF |
1751 | kfree(bhs); |
1752 | } | |
1753 | ||
c1e8d35e TM |
1754 | if (status) |
1755 | mlog_errno(status); | |
ccd979bd MF |
1756 | return status; |
1757 | } | |
1758 | ||
1759 | static int ocfs2_symlink(struct inode *dir, | |
1760 | struct dentry *dentry, | |
1761 | const char *symname) | |
1762 | { | |
1763 | int status, l, credits; | |
1764 | u64 newsize; | |
1765 | struct ocfs2_super *osb = NULL; | |
1766 | struct inode *inode = NULL; | |
1767 | struct super_block *sb; | |
1768 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1769 | struct buffer_head *parent_fe_bh = NULL; |
1770 | struct ocfs2_dinode *fe = NULL; | |
1771 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1772 | handle_t *handle = NULL; |
ccd979bd MF |
1773 | struct ocfs2_alloc_context *inode_ac = NULL; |
1774 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1775 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1776 | int want_clusters = 0; | |
1777 | int xattr_credits = 0; | |
1778 | struct ocfs2_security_xattr_info si = { | |
1779 | .enable = 1, | |
1780 | }; | |
a90714c1 | 1781 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1782 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
1783 | sigset_t oldset; |
1784 | int did_block_signals = 0; | |
595297a8 | 1785 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 1786 | |
8990e44a TM |
1787 | trace_ocfs2_symlink_begin(dir, dentry, symname, |
1788 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 1789 | |
871a2931 | 1790 | dquot_initialize(dir); |
907f4554 | 1791 | |
ccd979bd MF |
1792 | sb = dir->i_sb; |
1793 | osb = OCFS2_SB(sb); | |
1794 | ||
1795 | l = strlen(symname) + 1; | |
1796 | ||
1797 | credits = ocfs2_calc_symlink_credits(sb); | |
1798 | ||
ccd979bd | 1799 | /* lock the parent directory */ |
e63aecb6 | 1800 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1801 | if (status < 0) { |
1802 | if (status != -ENOENT) | |
1803 | mlog_errno(status); | |
6d8fc40e | 1804 | return status; |
ccd979bd MF |
1805 | } |
1806 | ||
1807 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
198a1ca3 | 1808 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
1809 | /* can't make a file in a deleted directory. */ |
1810 | status = -ENOENT; | |
1811 | goto bail; | |
1812 | } | |
1813 | ||
1814 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1815 | dentry->d_name.len); | |
1816 | if (status) | |
1817 | goto bail; | |
1818 | ||
1819 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1820 | dentry->d_name.name, | |
4a12ca3a | 1821 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1822 | if (status < 0) { |
1823 | mlog_errno(status); | |
1824 | goto bail; | |
1825 | } | |
1826 | ||
da5cbf2f | 1827 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1828 | if (status < 0) { |
1829 | if (status != -ENOSPC) | |
1830 | mlog_errno(status); | |
1831 | goto bail; | |
1832 | } | |
1833 | ||
f5d36202 TY |
1834 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
1835 | if (!inode) { | |
1836 | status = -ENOMEM; | |
1837 | mlog_errno(status); | |
1838 | goto bail; | |
1839 | } | |
1840 | ||
534eaddd | 1841 | /* get security xattr */ |
2a7dba39 | 1842 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
1843 | if (status) { |
1844 | if (status == -EOPNOTSUPP) | |
1845 | si.enable = 0; | |
1846 | else { | |
1847 | mlog_errno(status); | |
1848 | goto bail; | |
1849 | } | |
1850 | } | |
1851 | ||
1852 | /* calculate meta data/clusters for setting security xattr */ | |
1853 | if (si.enable) { | |
1854 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1855 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1856 | if (status < 0) { |
534eaddd | 1857 | mlog_errno(status); |
ccd979bd MF |
1858 | goto bail; |
1859 | } | |
1860 | } | |
1861 | ||
534eaddd TY |
1862 | /* don't reserve bitmap space for fast symlinks. */ |
1863 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1864 | want_clusters += 1; | |
1865 | ||
1866 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1867 | if (status < 0) { | |
1868 | if (status != -ENOSPC) | |
1869 | mlog_errno(status); | |
1870 | goto bail; | |
1871 | } | |
1872 | ||
1873 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1874 | if (IS_ERR(handle)) { |
1875 | status = PTR_ERR(handle); | |
1876 | handle = NULL; | |
1877 | mlog_errno(status); | |
1878 | goto bail; | |
1879 | } | |
1880 | ||
547ba7c8 JB |
1881 | /* Starting to change things, restart is no longer possible. */ |
1882 | ocfs2_block_signals(&oldset); | |
1883 | did_block_signals = 1; | |
1884 | ||
63936dda CH |
1885 | status = dquot_alloc_inode(inode); |
1886 | if (status) | |
a90714c1 | 1887 | goto bail; |
a90714c1 JK |
1888 | did_quota_inode = 1; |
1889 | ||
8990e44a TM |
1890 | trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len, |
1891 | dentry->d_name.name, | |
1892 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
1893 | inode->i_mode); | |
19bd341f TM |
1894 | |
1895 | status = ocfs2_mknod_locked(osb, dir, inode, | |
f5d36202 TY |
1896 | 0, &new_fe_bh, parent_fe_bh, handle, |
1897 | inode_ac); | |
ccd979bd MF |
1898 | if (status < 0) { |
1899 | mlog_errno(status); | |
1900 | goto bail; | |
1901 | } | |
1902 | ||
1903 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1904 | inode->i_rdev = 0; | |
1905 | newsize = l - 1; | |
ea022dfb | 1906 | inode->i_op = &ocfs2_symlink_inode_operations; |
ccd979bd | 1907 | if (l > ocfs2_fast_symlink_chars(sb)) { |
dcd0538f MF |
1908 | u32 offset = 0; |
1909 | ||
5dd4056d CH |
1910 | status = dquot_alloc_space_nodirty(inode, |
1911 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1912 | if (status) | |
a90714c1 | 1913 | goto bail; |
a90714c1 | 1914 | did_quota = 1; |
ea022dfb | 1915 | inode->i_mapping->a_ops = &ocfs2_aops; |
0eb8d47e TM |
1916 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1917 | new_fe_bh, | |
1918 | handle, data_ac, NULL, | |
1919 | NULL); | |
ccd979bd MF |
1920 | if (status < 0) { |
1921 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1922 | mlog(ML_ERROR, |
1923 | "Failed to extend file to %llu\n", | |
1924 | (unsigned long long)newsize); | |
ccd979bd MF |
1925 | mlog_errno(status); |
1926 | status = -ENOSPC; | |
1927 | } | |
1928 | goto bail; | |
1929 | } | |
1930 | i_size_write(inode, newsize); | |
8110b073 | 1931 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd | 1932 | } else { |
ea022dfb | 1933 | inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops; |
ccd979bd MF |
1934 | memcpy((char *) fe->id2.i_symlink, symname, l); |
1935 | i_size_write(inode, newsize); | |
1936 | inode->i_blocks = 0; | |
1937 | } | |
1938 | ||
1939 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1940 | if (status < 0) { | |
1941 | mlog_errno(status); | |
1942 | goto bail; | |
1943 | } | |
1944 | ||
1945 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
1946 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
1947 | symname); | |
1948 | if (status < 0) { | |
1949 | mlog_errno(status); | |
1950 | goto bail; | |
1951 | } | |
1952 | } | |
1953 | ||
534eaddd TY |
1954 | if (si.enable) { |
1955 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
1956 | xattr_ac, data_ac); | |
1957 | if (status < 0) { | |
1958 | mlog_errno(status); | |
1959 | goto bail; | |
1960 | } | |
1961 | } | |
1962 | ||
a9743fcd MF |
1963 | /* |
1964 | * Do this before adding the entry to the directory. We add | |
1965 | * also set d_op after success so that ->d_iput() will cleanup | |
1966 | * the dentry lock even if ocfs2_add_entry() fails below. | |
1967 | */ | |
1968 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); | |
1969 | if (status) { | |
ccd979bd MF |
1970 | mlog_errno(status); |
1971 | goto bail; | |
1972 | } | |
1973 | ||
595297a8 | 1974 | dl = dentry->d_fsdata; |
1975 | ||
a9743fcd MF |
1976 | status = ocfs2_add_entry(handle, dentry, inode, |
1977 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
1978 | &lookup); | |
1979 | if (status < 0) { | |
379dfe9d MF |
1980 | mlog_errno(status); |
1981 | goto bail; | |
1982 | } | |
1983 | ||
ccd979bd | 1984 | insert_inode_hash(inode); |
ccd979bd MF |
1985 | d_instantiate(dentry, inode); |
1986 | bail: | |
a90714c1 | 1987 | if (status < 0 && did_quota) |
5dd4056d | 1988 | dquot_free_space_nodirty(inode, |
a90714c1 JK |
1989 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
1990 | if (status < 0 && did_quota_inode) | |
63936dda | 1991 | dquot_free_inode(inode); |
ccd979bd | 1992 | if (handle) |
02dc1af4 | 1993 | ocfs2_commit_trans(osb, handle); |
6d8fc40e | 1994 | |
e63aecb6 | 1995 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
1996 | if (did_block_signals) |
1997 | ocfs2_unblock_signals(&oldset); | |
6d8fc40e | 1998 | |
a81cb88b MF |
1999 | brelse(new_fe_bh); |
2000 | brelse(parent_fe_bh); | |
534eaddd | 2001 | kfree(si.value); |
4a12ca3a | 2002 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
2003 | if (inode_ac) |
2004 | ocfs2_free_alloc_context(inode_ac); | |
2005 | if (data_ac) | |
2006 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
2007 | if (xattr_ac) |
2008 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 | 2009 | if ((status < 0) && inode) { |
595297a8 | 2010 | if (dl) |
2011 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
2012 | ||
ab41fdc8 | 2013 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
f5d36202 | 2014 | clear_nlink(inode); |
ccd979bd | 2015 | iput(inode); |
f5d36202 | 2016 | } |
ccd979bd | 2017 | |
c1e8d35e TM |
2018 | if (status) |
2019 | mlog_errno(status); | |
ccd979bd MF |
2020 | |
2021 | return status; | |
2022 | } | |
2023 | ||
ccd979bd MF |
2024 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
2025 | { | |
2026 | int status, namelen; | |
2027 | ||
b0697053 MF |
2028 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
2029 | (long long)blkno); | |
ccd979bd MF |
2030 | if (namelen <= 0) { |
2031 | if (namelen) | |
2032 | status = namelen; | |
2033 | else | |
2034 | status = -EINVAL; | |
2035 | mlog_errno(status); | |
2036 | goto bail; | |
2037 | } | |
2038 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
2039 | status = -EINVAL; | |
2040 | mlog_errno(status); | |
2041 | goto bail; | |
2042 | } | |
2043 | ||
8990e44a | 2044 | trace_ocfs2_blkno_stringify(blkno, name, namelen); |
ccd979bd MF |
2045 | |
2046 | status = 0; | |
2047 | bail: | |
c1e8d35e TM |
2048 | if (status < 0) |
2049 | mlog_errno(status); | |
ccd979bd MF |
2050 | return status; |
2051 | } | |
2052 | ||
dd43bcde MF |
2053 | static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb, |
2054 | struct inode **ret_orphan_dir, | |
2055 | struct buffer_head **ret_orphan_dir_bh) | |
ccd979bd | 2056 | { |
5098c27b | 2057 | struct inode *orphan_dir_inode; |
ccd979bd | 2058 | struct buffer_head *orphan_dir_bh = NULL; |
dd43bcde | 2059 | int ret = 0; |
ccd979bd MF |
2060 | |
2061 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2062 | ORPHAN_DIR_SYSTEM_INODE, | |
2063 | osb->slot_num); | |
2064 | if (!orphan_dir_inode) { | |
dd43bcde MF |
2065 | ret = -ENOENT; |
2066 | mlog_errno(ret); | |
2067 | return ret; | |
ccd979bd MF |
2068 | } |
2069 | ||
5098c27b MF |
2070 | mutex_lock(&orphan_dir_inode->i_mutex); |
2071 | ||
dd43bcde MF |
2072 | ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2073 | if (ret < 0) { | |
2074 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2075 | iput(orphan_dir_inode); | |
2076 | ||
2077 | mlog_errno(ret); | |
2078 | return ret; | |
ccd979bd MF |
2079 | } |
2080 | ||
dd43bcde MF |
2081 | *ret_orphan_dir = orphan_dir_inode; |
2082 | *ret_orphan_dir_bh = orphan_dir_bh; | |
5098c27b | 2083 | |
dd43bcde MF |
2084 | return 0; |
2085 | } | |
2086 | ||
2087 | static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode, | |
2088 | struct buffer_head *orphan_dir_bh, | |
2089 | u64 blkno, | |
2090 | char *name, | |
2091 | struct ocfs2_dir_lookup_result *lookup) | |
2092 | { | |
2093 | int ret; | |
2094 | struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb); | |
2095 | ||
2096 | ret = ocfs2_blkno_stringify(blkno, name); | |
2097 | if (ret < 0) { | |
2098 | mlog_errno(ret); | |
2099 | return ret; | |
2100 | } | |
2101 | ||
2102 | ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
2103 | orphan_dir_bh, name, | |
2104 | OCFS2_ORPHAN_NAMELEN, lookup); | |
2105 | if (ret < 0) { | |
2106 | mlog_errno(ret); | |
2107 | return ret; | |
2108 | } | |
2109 | ||
2110 | return 0; | |
2111 | } | |
2112 | ||
2113 | /** | |
2114 | * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for | |
2115 | * insertion of an orphan. | |
2116 | * @osb: ocfs2 file system | |
2117 | * @ret_orphan_dir: Orphan dir inode - returned locked! | |
2118 | * @blkno: Actual block number of the inode to be inserted into orphan dir. | |
2119 | * @lookup: dir lookup result, to be passed back into functions like | |
2120 | * ocfs2_orphan_add | |
2121 | * | |
2122 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2123 | * fields will be populated. | |
2124 | * | |
2125 | * Returns non-zero on failure. | |
2126 | */ | |
2127 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
2128 | struct inode **ret_orphan_dir, | |
2129 | u64 blkno, | |
2130 | char *name, | |
2131 | struct ocfs2_dir_lookup_result *lookup) | |
2132 | { | |
2133 | struct inode *orphan_dir_inode = NULL; | |
2134 | struct buffer_head *orphan_dir_bh = NULL; | |
2135 | int ret = 0; | |
2136 | ||
2137 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode, | |
2138 | &orphan_dir_bh); | |
2139 | if (ret < 0) { | |
2140 | mlog_errno(ret); | |
2141 | return ret; | |
2142 | } | |
2143 | ||
2144 | ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh, | |
2145 | blkno, name, lookup); | |
2146 | if (ret < 0) { | |
2147 | mlog_errno(ret); | |
2148 | goto out; | |
ccd979bd MF |
2149 | } |
2150 | ||
5098c27b MF |
2151 | *ret_orphan_dir = orphan_dir_inode; |
2152 | ||
dd43bcde MF |
2153 | out: |
2154 | brelse(orphan_dir_bh); | |
2155 | ||
2156 | if (ret) { | |
2157 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5098c27b | 2158 | mutex_unlock(&orphan_dir_inode->i_mutex); |
ccd979bd | 2159 | iput(orphan_dir_inode); |
5098c27b | 2160 | } |
ccd979bd | 2161 | |
c1e8d35e TM |
2162 | if (ret) |
2163 | mlog_errno(ret); | |
dd43bcde | 2164 | return ret; |
ccd979bd MF |
2165 | } |
2166 | ||
2167 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 2168 | handle_t *handle, |
ccd979bd | 2169 | struct inode *inode, |
3939fda4 | 2170 | struct buffer_head *fe_bh, |
ccd979bd | 2171 | char *name, |
4a12ca3a | 2172 | struct ocfs2_dir_lookup_result *lookup, |
5098c27b | 2173 | struct inode *orphan_dir_inode) |
ccd979bd | 2174 | { |
ccd979bd MF |
2175 | struct buffer_head *orphan_dir_bh = NULL; |
2176 | int status = 0; | |
2177 | struct ocfs2_dinode *orphan_fe; | |
3939fda4 | 2178 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; |
ccd979bd | 2179 | |
8990e44a TM |
2180 | trace_ocfs2_orphan_add_begin( |
2181 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 2182 | |
b657c95c | 2183 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
2184 | if (status < 0) { |
2185 | mlog_errno(status); | |
2186 | goto leave; | |
2187 | } | |
2188 | ||
0cf2f763 JB |
2189 | status = ocfs2_journal_access_di(handle, |
2190 | INODE_CACHE(orphan_dir_inode), | |
2191 | orphan_dir_bh, | |
13723d00 | 2192 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2193 | if (status < 0) { |
2194 | mlog_errno(status); | |
2195 | goto leave; | |
2196 | } | |
2197 | ||
ea45466a YL |
2198 | /* |
2199 | * We're going to journal the change of i_flags and i_orphaned_slot. | |
2200 | * It's safe anyway, though some callers may duplicate the journaling. | |
2201 | * Journaling within the func just make the logic look more | |
2202 | * straightforward. | |
2203 | */ | |
2204 | status = ocfs2_journal_access_di(handle, | |
2205 | INODE_CACHE(inode), | |
2206 | fe_bh, | |
2207 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2208 | if (status < 0) { | |
2209 | mlog_errno(status); | |
2210 | goto leave; | |
2211 | } | |
2212 | ||
ccd979bd MF |
2213 | /* we're a cluster, and nlink can change on disk from |
2214 | * underneath us... */ | |
2215 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2216 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2217 | ocfs2_add_links_count(orphan_fe, 1); |
bfe86848 | 2218 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2219 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2220 | |
2221 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
2222 | OCFS2_ORPHAN_NAMELEN, inode, | |
2223 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 2224 | orphan_dir_bh, lookup); |
ccd979bd MF |
2225 | if (status < 0) { |
2226 | mlog_errno(status); | |
ea45466a | 2227 | goto rollback; |
3939fda4 TY |
2228 | } |
2229 | ||
13eb9887 | 2230 | fe->i_flags |= cpu_to_le32(OCFS2_ORPHANED_FL); |
d4cd1871 | 2231 | OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR; |
ccd979bd MF |
2232 | |
2233 | /* Record which orphan dir our inode now resides | |
2234 | * in. delete_inode will use this to determine which orphan | |
2235 | * dir to lock. */ | |
50008630 | 2236 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); |
ccd979bd | 2237 | |
3939fda4 TY |
2238 | ocfs2_journal_dirty(handle, fe_bh); |
2239 | ||
8990e44a TM |
2240 | trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno, |
2241 | osb->slot_num); | |
ccd979bd | 2242 | |
ea45466a YL |
2243 | rollback: |
2244 | if (status < 0) { | |
2245 | if (S_ISDIR(inode->i_mode)) | |
2246 | ocfs2_add_links_count(orphan_fe, -1); | |
2247 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); | |
2248 | } | |
2249 | ||
ccd979bd | 2250 | leave: |
a81cb88b | 2251 | brelse(orphan_dir_bh); |
ccd979bd | 2252 | |
ccd979bd MF |
2253 | return status; |
2254 | } | |
2255 | ||
2256 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
2257 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 2258 | handle_t *handle, |
ccd979bd MF |
2259 | struct inode *orphan_dir_inode, |
2260 | struct inode *inode, | |
2261 | struct buffer_head *orphan_dir_bh) | |
2262 | { | |
2263 | char name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2264 | struct ocfs2_dinode *orphan_fe; | |
2265 | int status = 0; | |
4a12ca3a | 2266 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd | 2267 | |
ccd979bd MF |
2268 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); |
2269 | if (status < 0) { | |
2270 | mlog_errno(status); | |
2271 | goto leave; | |
2272 | } | |
2273 | ||
8990e44a TM |
2274 | trace_ocfs2_orphan_del( |
2275 | (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
2276 | name, OCFS2_ORPHAN_NAMELEN); | |
ccd979bd MF |
2277 | |
2278 | /* find it's spot in the orphan directory */ | |
4a12ca3a MF |
2279 | status = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, orphan_dir_inode, |
2280 | &lookup); | |
2281 | if (status) { | |
ccd979bd MF |
2282 | mlog_errno(status); |
2283 | goto leave; | |
2284 | } | |
2285 | ||
2286 | /* remove it from the orphan directory */ | |
4a12ca3a | 2287 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
2288 | if (status < 0) { |
2289 | mlog_errno(status); | |
2290 | goto leave; | |
2291 | } | |
2292 | ||
0cf2f763 JB |
2293 | status = ocfs2_journal_access_di(handle, |
2294 | INODE_CACHE(orphan_dir_inode), | |
2295 | orphan_dir_bh, | |
13723d00 | 2296 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2297 | if (status < 0) { |
2298 | mlog_errno(status); | |
2299 | goto leave; | |
2300 | } | |
2301 | ||
2302 | /* do the i_nlink dance! :) */ | |
2303 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2304 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2305 | ocfs2_add_links_count(orphan_fe, -1); |
bfe86848 | 2306 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2307 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2308 | |
2309 | leave: | |
4a12ca3a | 2310 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd | 2311 | |
c1e8d35e TM |
2312 | if (status) |
2313 | mlog_errno(status); | |
ccd979bd MF |
2314 | return status; |
2315 | } | |
2316 | ||
97b8f4a9 | 2317 | /** |
25985edc | 2318 | * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to receive a newly |
97b8f4a9 MF |
2319 | * allocated file. This is different from the typical 'add to orphan dir' |
2320 | * operation in that the inode does not yet exist. This is a problem because | |
2321 | * the orphan dir stringifies the inode block number to come up with it's | |
2322 | * dirent. Obviously if the inode does not yet exist we have a chicken and egg | |
2323 | * problem. This function works around it by calling deeper into the orphan | |
2324 | * and suballoc code than other callers. Use this only by necessity. | |
2325 | * @dir: The directory which this inode will ultimately wind up under - not the | |
2326 | * orphan dir! | |
2327 | * @dir_bh: buffer_head the @dir inode block | |
2328 | * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled | |
2329 | * with the string to be used for orphan dirent. Pass back to the orphan dir | |
2330 | * code. | |
2331 | * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan | |
2332 | * dir code. | |
2333 | * @ret_di_blkno: block number where the new inode will be allocated. | |
2334 | * @orphan_insert: Dir insert context to be passed back into orphan dir code. | |
2335 | * @ret_inode_ac: Inode alloc context to be passed back to the allocator. | |
2336 | * | |
2337 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2338 | * fields will be populated. | |
2339 | * | |
2340 | * Returns non-zero on failure. | |
2341 | */ | |
2342 | static int ocfs2_prep_new_orphaned_file(struct inode *dir, | |
2343 | struct buffer_head *dir_bh, | |
2344 | char *orphan_name, | |
2345 | struct inode **ret_orphan_dir, | |
2346 | u64 *ret_di_blkno, | |
2347 | struct ocfs2_dir_lookup_result *orphan_insert, | |
2348 | struct ocfs2_alloc_context **ret_inode_ac) | |
2349 | { | |
2350 | int ret; | |
2351 | u64 di_blkno; | |
2352 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2353 | struct inode *orphan_dir = NULL; | |
2354 | struct buffer_head *orphan_dir_bh = NULL; | |
2355 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2356 | ||
2357 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh); | |
2358 | if (ret < 0) { | |
2359 | mlog_errno(ret); | |
2360 | return ret; | |
2361 | } | |
2362 | ||
2363 | /* reserve an inode spot */ | |
2364 | ret = ocfs2_reserve_new_inode(osb, &inode_ac); | |
2365 | if (ret < 0) { | |
2366 | if (ret != -ENOSPC) | |
2367 | mlog_errno(ret); | |
2368 | goto out; | |
2369 | } | |
2370 | ||
2371 | ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac, | |
2372 | &di_blkno); | |
2373 | if (ret) { | |
2374 | mlog_errno(ret); | |
2375 | goto out; | |
2376 | } | |
2377 | ||
2378 | ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh, | |
2379 | di_blkno, orphan_name, orphan_insert); | |
2380 | if (ret < 0) { | |
2381 | mlog_errno(ret); | |
2382 | goto out; | |
2383 | } | |
2384 | ||
2385 | out: | |
2386 | if (ret == 0) { | |
2387 | *ret_orphan_dir = orphan_dir; | |
2388 | *ret_di_blkno = di_blkno; | |
2389 | *ret_inode_ac = inode_ac; | |
2390 | /* | |
2391 | * orphan_name and orphan_insert are already up to | |
2392 | * date via prepare_orphan_dir | |
2393 | */ | |
2394 | } else { | |
2395 | /* Unroll reserve_new_inode* */ | |
2396 | if (inode_ac) | |
2397 | ocfs2_free_alloc_context(inode_ac); | |
2398 | ||
2399 | /* Unroll orphan dir locking */ | |
2400 | mutex_unlock(&orphan_dir->i_mutex); | |
2401 | ocfs2_inode_unlock(orphan_dir, 1); | |
2402 | iput(orphan_dir); | |
2403 | } | |
2404 | ||
2405 | brelse(orphan_dir_bh); | |
2406 | ||
7869e590 | 2407 | return ret; |
97b8f4a9 MF |
2408 | } |
2409 | ||
bc13d347 TM |
2410 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
2411 | int mode, | |
2412 | struct inode **new_inode) | |
2413 | { | |
2414 | int status, did_quota_inode = 0; | |
2415 | struct inode *inode = NULL; | |
2416 | struct inode *orphan_dir = NULL; | |
2417 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2418 | struct ocfs2_dinode *di = NULL; | |
2419 | handle_t *handle = NULL; | |
2420 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2421 | struct buffer_head *parent_di_bh = NULL; | |
2422 | struct buffer_head *new_di_bh = NULL; | |
2423 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2424 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
97b8f4a9 MF |
2425 | u64 uninitialized_var(di_blkno), suballoc_loc; |
2426 | u16 suballoc_bit; | |
bc13d347 TM |
2427 | |
2428 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2429 | if (status < 0) { | |
2430 | if (status != -ENOENT) | |
2431 | mlog_errno(status); | |
2432 | return status; | |
2433 | } | |
2434 | ||
97b8f4a9 MF |
2435 | status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh, |
2436 | orphan_name, &orphan_dir, | |
2437 | &di_blkno, &orphan_insert, &inode_ac); | |
bc13d347 TM |
2438 | if (status < 0) { |
2439 | if (status != -ENOSPC) | |
2440 | mlog_errno(status); | |
2441 | goto leave; | |
2442 | } | |
2443 | ||
2444 | inode = ocfs2_get_init_inode(dir, mode); | |
2445 | if (!inode) { | |
2446 | status = -ENOMEM; | |
2447 | mlog_errno(status); | |
2448 | goto leave; | |
2449 | } | |
2450 | ||
2451 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); | |
2452 | if (IS_ERR(handle)) { | |
2453 | status = PTR_ERR(handle); | |
2454 | handle = NULL; | |
2455 | mlog_errno(status); | |
2456 | goto leave; | |
2457 | } | |
2458 | ||
63936dda CH |
2459 | status = dquot_alloc_inode(inode); |
2460 | if (status) | |
bc13d347 | 2461 | goto leave; |
bc13d347 TM |
2462 | did_quota_inode = 1; |
2463 | ||
97b8f4a9 MF |
2464 | status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac, |
2465 | &suballoc_loc, | |
2466 | &suballoc_bit, di_blkno); | |
bc13d347 TM |
2467 | if (status < 0) { |
2468 | mlog_errno(status); | |
2469 | goto leave; | |
2470 | } | |
2471 | ||
6d6b77f1 | 2472 | clear_nlink(inode); |
97b8f4a9 MF |
2473 | /* do the real work now. */ |
2474 | status = __ocfs2_mknod_locked(dir, inode, | |
2475 | 0, &new_di_bh, parent_di_bh, handle, | |
2476 | inode_ac, di_blkno, suballoc_loc, | |
2477 | suballoc_bit); | |
bc13d347 TM |
2478 | if (status < 0) { |
2479 | mlog_errno(status); | |
2480 | goto leave; | |
2481 | } | |
2482 | ||
2483 | di = (struct ocfs2_dinode *)new_di_bh->b_data; | |
3939fda4 | 2484 | status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name, |
bc13d347 TM |
2485 | &orphan_insert, orphan_dir); |
2486 | if (status < 0) { | |
2487 | mlog_errno(status); | |
2488 | goto leave; | |
2489 | } | |
2490 | ||
2491 | /* get open lock so that only nodes can't remove it from orphan dir. */ | |
2492 | status = ocfs2_open_lock(inode); | |
2493 | if (status < 0) | |
2494 | mlog_errno(status); | |
2495 | ||
c7d260af | 2496 | insert_inode_hash(inode); |
bc13d347 TM |
2497 | leave: |
2498 | if (status < 0 && did_quota_inode) | |
63936dda | 2499 | dquot_free_inode(inode); |
bc13d347 TM |
2500 | if (handle) |
2501 | ocfs2_commit_trans(osb, handle); | |
2502 | ||
2503 | if (orphan_dir) { | |
2504 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
2505 | ocfs2_inode_unlock(orphan_dir, 1); | |
2506 | mutex_unlock(&orphan_dir->i_mutex); | |
2507 | iput(orphan_dir); | |
2508 | } | |
2509 | ||
bc13d347 TM |
2510 | if ((status < 0) && inode) { |
2511 | clear_nlink(inode); | |
2512 | iput(inode); | |
2513 | } | |
2514 | ||
2515 | if (inode_ac) | |
2516 | ocfs2_free_alloc_context(inode_ac); | |
2517 | ||
2518 | brelse(new_di_bh); | |
2519 | ||
2520 | if (!status) | |
2521 | *new_inode = inode; | |
2522 | ||
2523 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2524 | ||
2525 | ocfs2_inode_unlock(dir, 1); | |
2526 | brelse(parent_di_bh); | |
2527 | return status; | |
2528 | } | |
2529 | ||
2530 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, | |
2531 | struct inode *inode, | |
2532 | struct dentry *dentry) | |
2533 | { | |
2534 | int status = 0; | |
2535 | struct buffer_head *parent_di_bh = NULL; | |
2536 | handle_t *handle = NULL; | |
2537 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2538 | struct ocfs2_dinode *dir_di, *di; | |
2539 | struct inode *orphan_dir_inode = NULL; | |
2540 | struct buffer_head *orphan_dir_bh = NULL; | |
2541 | struct buffer_head *di_bh = NULL; | |
2542 | struct ocfs2_dir_lookup_result lookup = { NULL, }; | |
2543 | ||
8990e44a TM |
2544 | trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry, |
2545 | dentry->d_name.len, dentry->d_name.name, | |
2546 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
2547 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
bc13d347 TM |
2548 | |
2549 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2550 | if (status < 0) { | |
2551 | if (status != -ENOENT) | |
2552 | mlog_errno(status); | |
2553 | return status; | |
2554 | } | |
2555 | ||
2556 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; | |
2557 | if (!dir_di->i_links_count) { | |
2558 | /* can't make a file in a deleted directory. */ | |
2559 | status = -ENOENT; | |
2560 | goto leave; | |
2561 | } | |
2562 | ||
2563 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
2564 | dentry->d_name.len); | |
2565 | if (status) | |
2566 | goto leave; | |
2567 | ||
2568 | /* get a spot inside the dir. */ | |
2569 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, | |
2570 | dentry->d_name.name, | |
2571 | dentry->d_name.len, &lookup); | |
2572 | if (status < 0) { | |
2573 | mlog_errno(status); | |
2574 | goto leave; | |
2575 | } | |
2576 | ||
2577 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2578 | ORPHAN_DIR_SYSTEM_INODE, | |
2579 | osb->slot_num); | |
2580 | if (!orphan_dir_inode) { | |
2581 | status = -EEXIST; | |
2582 | mlog_errno(status); | |
2583 | goto leave; | |
2584 | } | |
2585 | ||
2586 | mutex_lock(&orphan_dir_inode->i_mutex); | |
2587 | ||
2588 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2589 | if (status < 0) { | |
2590 | mlog_errno(status); | |
2591 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2592 | iput(orphan_dir_inode); | |
2593 | goto leave; | |
2594 | } | |
2595 | ||
2596 | status = ocfs2_read_inode_block(inode, &di_bh); | |
2597 | if (status < 0) { | |
2598 | mlog_errno(status); | |
2599 | goto orphan_unlock; | |
2600 | } | |
2601 | ||
2602 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); | |
2603 | if (IS_ERR(handle)) { | |
2604 | status = PTR_ERR(handle); | |
2605 | handle = NULL; | |
2606 | mlog_errno(status); | |
2607 | goto orphan_unlock; | |
2608 | } | |
2609 | ||
2610 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), | |
2611 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2612 | if (status < 0) { | |
2613 | mlog_errno(status); | |
2614 | goto out_commit; | |
2615 | } | |
2616 | ||
2617 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
2618 | orphan_dir_bh); | |
2619 | if (status < 0) { | |
2620 | mlog_errno(status); | |
2621 | goto out_commit; | |
2622 | } | |
2623 | ||
2624 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
13eb9887 | 2625 | di->i_flags &= ~cpu_to_le32(OCFS2_ORPHANED_FL); |
bc13d347 | 2626 | di->i_orphaned_slot = 0; |
bfe86848 | 2627 | set_nlink(inode, 1); |
10cf1a02 | 2628 | ocfs2_set_links_count(di, inode->i_nlink); |
6fdb702d | 2629 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
bc13d347 TM |
2630 | ocfs2_journal_dirty(handle, di_bh); |
2631 | ||
2632 | status = ocfs2_add_entry(handle, dentry, inode, | |
2633 | OCFS2_I(inode)->ip_blkno, parent_di_bh, | |
2634 | &lookup); | |
2635 | if (status < 0) { | |
2636 | mlog_errno(status); | |
2637 | goto out_commit; | |
2638 | } | |
2639 | ||
2640 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
2641 | OCFS2_I(dir)->ip_blkno); | |
2642 | if (status) { | |
2643 | mlog_errno(status); | |
2644 | goto out_commit; | |
2645 | } | |
2646 | ||
bc13d347 TM |
2647 | d_instantiate(dentry, inode); |
2648 | status = 0; | |
2649 | out_commit: | |
2650 | ocfs2_commit_trans(osb, handle); | |
2651 | orphan_unlock: | |
2652 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
2653 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2654 | iput(orphan_dir_inode); | |
2655 | leave: | |
2656 | ||
2657 | ocfs2_inode_unlock(dir, 1); | |
2658 | ||
2659 | brelse(di_bh); | |
2660 | brelse(parent_di_bh); | |
2661 | brelse(orphan_dir_bh); | |
2662 | ||
2663 | ocfs2_free_dir_lookup_result(&lookup); | |
2664 | ||
c1e8d35e TM |
2665 | if (status) |
2666 | mlog_errno(status); | |
bc13d347 TM |
2667 | |
2668 | return status; | |
2669 | } | |
2670 | ||
92e1d5be | 2671 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2672 | .create = ocfs2_create, |
2673 | .lookup = ocfs2_lookup, | |
2674 | .link = ocfs2_link, | |
2675 | .unlink = ocfs2_unlink, | |
2676 | .rmdir = ocfs2_unlink, | |
2677 | .symlink = ocfs2_symlink, | |
2678 | .mkdir = ocfs2_mkdir, | |
2679 | .mknod = ocfs2_mknod, | |
2680 | .rename = ocfs2_rename, | |
2681 | .setattr = ocfs2_setattr, | |
2682 | .getattr = ocfs2_getattr, | |
d38eb8db | 2683 | .permission = ocfs2_permission, |
cf1d6c76 TY |
2684 | .setxattr = generic_setxattr, |
2685 | .getxattr = generic_getxattr, | |
2686 | .listxattr = ocfs2_listxattr, | |
2687 | .removexattr = generic_removexattr, | |
55f4946e | 2688 | .fiemap = ocfs2_fiemap, |
4e34e719 | 2689 | .get_acl = ocfs2_iop_get_acl, |
702e5bc6 | 2690 | .set_acl = ocfs2_iop_set_acl, |
ccd979bd | 2691 | }; |