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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, |
06ee5c75 JQ |
82 | struct ocfs2_dir_lookup_result *lookup, |
83 | bool dio); | |
ccd979bd MF |
84 | |
85 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 86 | handle_t *handle, |
ccd979bd | 87 | struct inode *inode, |
3939fda4 | 88 | struct buffer_head *fe_bh, |
ccd979bd | 89 | char *name, |
4a12ca3a | 90 | struct ocfs2_dir_lookup_result *lookup, |
06ee5c75 JQ |
91 | struct inode *orphan_dir_inode, |
92 | bool dio); | |
ccd979bd MF |
93 | |
94 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 95 | handle_t *handle, |
ccd979bd MF |
96 | struct inode *inode, |
97 | const char *symname); | |
98 | ||
53dc20b9 X |
99 | static int ocfs2_double_lock(struct ocfs2_super *osb, |
100 | struct buffer_head **bh1, | |
101 | struct inode *inode1, | |
102 | struct buffer_head **bh2, | |
103 | struct inode *inode2, | |
104 | int rename); | |
105 | ||
106 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2); | |
ccd979bd MF |
107 | /* An orphan dir name is an 8 byte value, printed as a hex string */ |
108 | #define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64))) | |
109 | ||
110 | static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry, | |
00cd8dd3 | 111 | unsigned int flags) |
ccd979bd MF |
112 | { |
113 | int status; | |
114 | u64 blkno; | |
ccd979bd MF |
115 | struct inode *inode = NULL; |
116 | struct dentry *ret; | |
ccd979bd MF |
117 | struct ocfs2_inode_info *oi; |
118 | ||
8990e44a TM |
119 | trace_ocfs2_lookup(dir, dentry, dentry->d_name.len, |
120 | dentry->d_name.name, | |
121 | (unsigned long long)OCFS2_I(dir)->ip_blkno, 0); | |
ccd979bd MF |
122 | |
123 | if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) { | |
124 | ret = ERR_PTR(-ENAMETOOLONG); | |
125 | goto bail; | |
126 | } | |
127 | ||
cb25797d | 128 | status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT); |
ccd979bd MF |
129 | if (status < 0) { |
130 | if (status != -ENOENT) | |
131 | mlog_errno(status); | |
132 | ret = ERR_PTR(status); | |
133 | goto bail; | |
134 | } | |
135 | ||
be94d117 MF |
136 | status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name, |
137 | dentry->d_name.len, &blkno); | |
ccd979bd MF |
138 | if (status < 0) |
139 | goto bail_add; | |
140 | ||
5fa0613e | 141 | inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0); |
ccd979bd | 142 | if (IS_ERR(inode)) { |
ccd979bd MF |
143 | ret = ERR_PTR(-EACCES); |
144 | goto bail_unlock; | |
145 | } | |
146 | ||
147 | oi = OCFS2_I(inode); | |
148 | /* Clear any orphaned state... If we were able to look up the | |
149 | * inode from a directory, it certainly can't be orphaned. We | |
150 | * might have the bad state from a node which intended to | |
151 | * orphan this inode but crashed before it could commit the | |
152 | * unlink. */ | |
153 | spin_lock(&oi->ip_lock); | |
154 | oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED; | |
ccd979bd MF |
155 | spin_unlock(&oi->ip_lock); |
156 | ||
157 | bail_add: | |
ccd979bd MF |
158 | ret = d_splice_alias(inode, dentry); |
159 | ||
379dfe9d MF |
160 | if (inode) { |
161 | /* | |
162 | * If d_splice_alias() finds a DCACHE_DISCONNECTED | |
163 | * dentry, it will d_move() it on top of ourse. The | |
164 | * return value will indicate this however, so in | |
165 | * those cases, we switch them around for the locking | |
166 | * code. | |
167 | * | |
168 | * NOTE: This dentry already has ->d_op set from | |
169 | * ocfs2_get_parent() and ocfs2_get_dentry() | |
170 | */ | |
d3556bab | 171 | if (!IS_ERR_OR_NULL(ret)) |
379dfe9d MF |
172 | dentry = ret; |
173 | ||
174 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
0027dd5b | 175 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
176 | if (status) { |
177 | mlog_errno(status); | |
178 | ret = ERR_PTR(status); | |
179 | goto bail_unlock; | |
180 | } | |
5e98d492 GR |
181 | } else |
182 | ocfs2_dentry_attach_gen(dentry); | |
379dfe9d | 183 | |
ccd979bd MF |
184 | bail_unlock: |
185 | /* Don't drop the cluster lock until *after* the d_add -- | |
186 | * unlink on another node will message us to remove that | |
187 | * dentry under this lock so otherwise we can race this with | |
34d024f8 | 188 | * the downconvert thread and have a stale dentry. */ |
e63aecb6 | 189 | ocfs2_inode_unlock(dir, 0); |
ccd979bd MF |
190 | |
191 | bail: | |
ccd979bd | 192 | |
8990e44a | 193 | trace_ocfs2_lookup_ret(ret); |
ccd979bd MF |
194 | |
195 | return ret; | |
196 | } | |
197 | ||
67697cbd | 198 | static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode) |
f5d36202 TY |
199 | { |
200 | struct inode *inode; | |
9c89fe0a | 201 | int status; |
f5d36202 TY |
202 | |
203 | inode = new_inode(dir->i_sb); | |
204 | if (!inode) { | |
205 | mlog(ML_ERROR, "new_inode failed!\n"); | |
9c89fe0a | 206 | return ERR_PTR(-ENOMEM); |
f5d36202 TY |
207 | } |
208 | ||
209 | /* populate as many fields early on as possible - many of | |
210 | * these are used by the support functions here and in | |
211 | * callers. */ | |
212 | if (S_ISDIR(mode)) | |
bfe86848 | 213 | set_nlink(inode, 2); |
75fe0a24 | 214 | inode_init_owner(inode, dir, mode); |
9c89fe0a JK |
215 | status = dquot_initialize(inode); |
216 | if (status) | |
217 | return ERR_PTR(status); | |
218 | ||
f5d36202 TY |
219 | return inode; |
220 | } | |
221 | ||
595297a8 | 222 | static void ocfs2_cleanup_add_entry_failure(struct ocfs2_super *osb, |
223 | struct dentry *dentry, struct inode *inode) | |
224 | { | |
225 | struct ocfs2_dentry_lock *dl = dentry->d_fsdata; | |
226 | ||
227 | ocfs2_simple_drop_lockres(osb, &dl->dl_lockres); | |
228 | ocfs2_lock_res_free(&dl->dl_lockres); | |
229 | BUG_ON(dl->dl_count != 1); | |
230 | spin_lock(&dentry_attach_lock); | |
231 | dentry->d_fsdata = NULL; | |
232 | spin_unlock(&dentry_attach_lock); | |
233 | kfree(dl); | |
234 | iput(inode); | |
235 | } | |
236 | ||
ccd979bd MF |
237 | static int ocfs2_mknod(struct inode *dir, |
238 | struct dentry *dentry, | |
1a67aafb | 239 | umode_t mode, |
ccd979bd MF |
240 | dev_t dev) |
241 | { | |
242 | int status = 0; | |
243 | struct buffer_head *parent_fe_bh = NULL; | |
1fabe148 | 244 | handle_t *handle = NULL; |
ccd979bd MF |
245 | struct ocfs2_super *osb; |
246 | struct ocfs2_dinode *dirfe; | |
247 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
248 | struct inode *inode = NULL; |
249 | struct ocfs2_alloc_context *inode_ac = NULL; | |
250 | struct ocfs2_alloc_context *data_ac = NULL; | |
9b7895ef | 251 | struct ocfs2_alloc_context *meta_ac = NULL; |
534eaddd | 252 | int want_clusters = 0; |
9b7895ef | 253 | int want_meta = 0; |
534eaddd TY |
254 | int xattr_credits = 0; |
255 | struct ocfs2_security_xattr_info si = { | |
256 | .enable = 1, | |
257 | }; | |
a90714c1 | 258 | int did_quota_inode = 0; |
4a12ca3a | 259 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
260 | sigset_t oldset; |
261 | int did_block_signals = 0; | |
595297a8 | 262 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 263 | |
8990e44a TM |
264 | trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
265 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
266 | (unsigned long)dev, mode); | |
ccd979bd | 267 | |
9c89fe0a JK |
268 | status = dquot_initialize(dir); |
269 | if (status) { | |
270 | mlog_errno(status); | |
271 | return status; | |
272 | } | |
907f4554 | 273 | |
ccd979bd MF |
274 | /* get our super block */ |
275 | osb = OCFS2_SB(dir->i_sb); | |
276 | ||
e63aecb6 | 277 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
e3a82138 MF |
278 | if (status < 0) { |
279 | if (status != -ENOENT) | |
280 | mlog_errno(status); | |
281 | return status; | |
282 | } | |
283 | ||
198a1ca3 | 284 | if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) { |
a663e305 MF |
285 | status = -EMLINK; |
286 | goto leave; | |
287 | } | |
288 | ||
ccd979bd | 289 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
198a1ca3 | 290 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
291 | /* can't make a file in a deleted directory. */ |
292 | status = -ENOENT; | |
293 | goto leave; | |
294 | } | |
295 | ||
296 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
297 | dentry->d_name.len); | |
298 | if (status) | |
299 | goto leave; | |
300 | ||
301 | /* get a spot inside the dir. */ | |
302 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
303 | dentry->d_name.name, | |
4a12ca3a | 304 | dentry->d_name.len, &lookup); |
ccd979bd MF |
305 | if (status < 0) { |
306 | mlog_errno(status); | |
307 | goto leave; | |
308 | } | |
309 | ||
310 | /* reserve an inode spot */ | |
da5cbf2f | 311 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
312 | if (status < 0) { |
313 | if (status != -ENOSPC) | |
314 | mlog_errno(status); | |
315 | goto leave; | |
316 | } | |
317 | ||
f5d36202 | 318 | inode = ocfs2_get_init_inode(dir, mode); |
9c89fe0a JK |
319 | if (IS_ERR(inode)) { |
320 | status = PTR_ERR(inode); | |
321 | inode = NULL; | |
f5d36202 TY |
322 | mlog_errno(status); |
323 | goto leave; | |
324 | } | |
325 | ||
534eaddd | 326 | /* get security xattr */ |
2a7dba39 | 327 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
328 | if (status) { |
329 | if (status == -EOPNOTSUPP) | |
330 | si.enable = 0; | |
331 | else { | |
332 | mlog_errno(status); | |
333 | goto leave; | |
334 | } | |
335 | } | |
336 | ||
89c38bd0 TY |
337 | /* calculate meta data/clusters for setting security and acl xattr */ |
338 | status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode, | |
9b7895ef MF |
339 | &si, &want_clusters, |
340 | &xattr_credits, &want_meta); | |
89c38bd0 TY |
341 | if (status < 0) { |
342 | mlog_errno(status); | |
343 | goto leave; | |
ccd979bd MF |
344 | } |
345 | ||
534eaddd | 346 | /* Reserve a cluster if creating an extent based directory. */ |
9b7895ef | 347 | if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) { |
534eaddd TY |
348 | want_clusters += 1; |
349 | ||
9b7895ef | 350 | /* Dir indexing requires extra space as well */ |
4ed8a6bb | 351 | if (ocfs2_supports_indexed_dirs(osb)) |
9b7895ef | 352 | want_meta++; |
9b7895ef MF |
353 | } |
354 | ||
355 | status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac); | |
356 | if (status < 0) { | |
357 | if (status != -ENOSPC) | |
358 | mlog_errno(status); | |
359 | goto leave; | |
360 | } | |
361 | ||
534eaddd TY |
362 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); |
363 | if (status < 0) { | |
364 | if (status != -ENOSPC) | |
365 | mlog_errno(status); | |
366 | goto leave; | |
367 | } | |
368 | ||
9b7895ef MF |
369 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, |
370 | S_ISDIR(mode), | |
371 | xattr_credits)); | |
ccd979bd MF |
372 | if (IS_ERR(handle)) { |
373 | status = PTR_ERR(handle); | |
374 | handle = NULL; | |
375 | mlog_errno(status); | |
376 | goto leave; | |
377 | } | |
378 | ||
547ba7c8 JB |
379 | /* Starting to change things, restart is no longer possible. */ |
380 | ocfs2_block_signals(&oldset); | |
381 | did_block_signals = 1; | |
382 | ||
63936dda CH |
383 | status = dquot_alloc_inode(inode); |
384 | if (status) | |
a90714c1 | 385 | goto leave; |
a90714c1 JK |
386 | did_quota_inode = 1; |
387 | ||
ccd979bd | 388 | /* do the real work now. */ |
19bd341f | 389 | status = ocfs2_mknod_locked(osb, dir, inode, dev, |
ccd979bd | 390 | &new_fe_bh, parent_fe_bh, handle, |
f5d36202 | 391 | inode_ac); |
ccd979bd MF |
392 | if (status < 0) { |
393 | mlog_errno(status); | |
394 | goto leave; | |
395 | } | |
396 | ||
397 | if (S_ISDIR(mode)) { | |
398 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, | |
9b7895ef | 399 | new_fe_bh, data_ac, meta_ac); |
ccd979bd MF |
400 | if (status < 0) { |
401 | mlog_errno(status); | |
402 | goto leave; | |
403 | } | |
404 | ||
0cf2f763 JB |
405 | status = ocfs2_journal_access_di(handle, INODE_CACHE(dir), |
406 | parent_fe_bh, | |
13723d00 | 407 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
408 | if (status < 0) { |
409 | mlog_errno(status); | |
410 | goto leave; | |
411 | } | |
198a1ca3 | 412 | ocfs2_add_links_count(dirfe, 1); |
ec20cec7 | 413 | ocfs2_journal_dirty(handle, parent_fe_bh); |
d8c76e6f | 414 | inc_nlink(dir); |
ccd979bd MF |
415 | } |
416 | ||
c25a1e06 JB |
417 | status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh, |
418 | meta_ac, data_ac); | |
702e5bc6 | 419 | |
89c38bd0 TY |
420 | if (status < 0) { |
421 | mlog_errno(status); | |
422 | goto leave; | |
423 | } | |
424 | ||
534eaddd TY |
425 | if (si.enable) { |
426 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
9b7895ef | 427 | meta_ac, data_ac); |
534eaddd TY |
428 | if (status < 0) { |
429 | mlog_errno(status); | |
430 | goto leave; | |
431 | } | |
432 | } | |
433 | ||
a9743fcd MF |
434 | /* |
435 | * Do this before adding the entry to the directory. We add | |
436 | * also set d_op after success so that ->d_iput() will cleanup | |
437 | * the dentry lock even if ocfs2_add_entry() fails below. | |
438 | */ | |
439 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
440 | OCFS2_I(dir)->ip_blkno); | |
441 | if (status) { | |
ccd979bd MF |
442 | mlog_errno(status); |
443 | goto leave; | |
444 | } | |
445 | ||
595297a8 | 446 | dl = dentry->d_fsdata; |
447 | ||
a9743fcd MF |
448 | status = ocfs2_add_entry(handle, dentry, inode, |
449 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
450 | &lookup); | |
451 | if (status < 0) { | |
379dfe9d MF |
452 | mlog_errno(status); |
453 | goto leave; | |
454 | } | |
455 | ||
ccd979bd | 456 | insert_inode_hash(inode); |
ccd979bd MF |
457 | d_instantiate(dentry, inode); |
458 | status = 0; | |
459 | leave: | |
a90714c1 | 460 | if (status < 0 && did_quota_inode) |
63936dda | 461 | dquot_free_inode(inode); |
ccd979bd | 462 | if (handle) |
02dc1af4 | 463 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 464 | |
e63aecb6 | 465 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
466 | if (did_block_signals) |
467 | ocfs2_unblock_signals(&oldset); | |
e3a82138 | 468 | |
a81cb88b | 469 | brelse(new_fe_bh); |
a81cb88b | 470 | brelse(parent_fe_bh); |
534eaddd | 471 | kfree(si.value); |
ccd979bd | 472 | |
4a12ca3a MF |
473 | ocfs2_free_dir_lookup_result(&lookup); |
474 | ||
ccd979bd MF |
475 | if (inode_ac) |
476 | ocfs2_free_alloc_context(inode_ac); | |
477 | ||
478 | if (data_ac) | |
479 | ocfs2_free_alloc_context(data_ac); | |
480 | ||
9b7895ef MF |
481 | if (meta_ac) |
482 | ocfs2_free_alloc_context(meta_ac); | |
534eaddd | 483 | |
062d3403 LD |
484 | /* |
485 | * We should call iput after the i_mutex of the bitmap been | |
486 | * unlocked in ocfs2_free_alloc_context, or the | |
487 | * ocfs2_delete_inode will mutex_lock again. | |
488 | */ | |
489 | if ((status < 0) && inode) { | |
595297a8 | 490 | if (dl) |
491 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
492 | ||
062d3403 LD |
493 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
494 | clear_nlink(inode); | |
495 | iput(inode); | |
496 | } | |
497 | ||
c1e8d35e TM |
498 | if (status) |
499 | mlog_errno(status); | |
ccd979bd MF |
500 | |
501 | return status; | |
502 | } | |
503 | ||
021960ca MF |
504 | static int __ocfs2_mknod_locked(struct inode *dir, |
505 | struct inode *inode, | |
506 | dev_t dev, | |
507 | struct buffer_head **new_fe_bh, | |
508 | struct buffer_head *parent_fe_bh, | |
509 | handle_t *handle, | |
510 | struct ocfs2_alloc_context *inode_ac, | |
511 | u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit) | |
ccd979bd MF |
512 | { |
513 | int status = 0; | |
021960ca | 514 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
ccd979bd MF |
515 | struct ocfs2_dinode *fe = NULL; |
516 | struct ocfs2_extent_list *fel; | |
9b7895ef | 517 | u16 feat; |
2931cdcb | 518 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
ccd979bd | 519 | |
ccd979bd | 520 | *new_fe_bh = NULL; |
ccd979bd | 521 | |
ccd979bd MF |
522 | /* populate as many fields early on as possible - many of |
523 | * these are used by the support functions here and in | |
524 | * callers. */ | |
525 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
526 | OCFS2_I(inode)->ip_blkno = fe_blkno; | |
ccd979bd MF |
527 | spin_lock(&osb->osb_lock); |
528 | inode->i_generation = osb->s_next_generation++; | |
529 | spin_unlock(&osb->osb_lock); | |
530 | ||
531 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
532 | if (!*new_fe_bh) { | |
7391a294 | 533 | status = -ENOMEM; |
ccd979bd MF |
534 | mlog_errno(status); |
535 | goto leave; | |
536 | } | |
8cb471e8 | 537 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
ccd979bd | 538 | |
0cf2f763 JB |
539 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
540 | *new_fe_bh, | |
13723d00 | 541 | OCFS2_JOURNAL_ACCESS_CREATE); |
ccd979bd MF |
542 | if (status < 0) { |
543 | mlog_errno(status); | |
544 | goto leave; | |
545 | } | |
546 | ||
547 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
548 | memset(fe, 0, osb->sb->s_blocksize); | |
549 | ||
550 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
551 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
552 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
2b6cb576 | 553 | fe->i_suballoc_loc = cpu_to_le64(suballoc_loc); |
ccd979bd | 554 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); |
4d0ddb2c | 555 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
2c034176 EB |
556 | fe->i_uid = cpu_to_le32(i_uid_read(inode)); |
557 | fe->i_gid = cpu_to_le32(i_gid_read(inode)); | |
f5d36202 TY |
558 | fe->i_mode = cpu_to_le16(inode->i_mode); |
559 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 560 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
198a1ca3 MF |
561 | |
562 | ocfs2_set_links_count(fe, inode->i_nlink); | |
ccd979bd MF |
563 | |
564 | fe->i_last_eb_blk = 0; | |
565 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
13eb9887 | 566 | fe->i_flags |= cpu_to_le32(OCFS2_VALID_FL); |
ccd979bd MF |
567 | fe->i_atime = fe->i_ctime = fe->i_mtime = |
568 | cpu_to_le64(CURRENT_TIME.tv_sec); | |
569 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = | |
570 | cpu_to_le32(CURRENT_TIME.tv_nsec); | |
571 | fe->i_dtime = 0; | |
572 | ||
5b6a3a2b | 573 | /* |
9b7895ef MF |
574 | * If supported, directories start with inline data. If inline |
575 | * isn't supported, but indexing is, we start them as indexed. | |
5b6a3a2b | 576 | */ |
9b7895ef | 577 | feat = le16_to_cpu(fe->i_dyn_features); |
f5d36202 | 578 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
579 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
580 | ||
d9ae49d6 TY |
581 | fe->id2.i_data.id_count = cpu_to_le16( |
582 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); | |
5b6a3a2b MF |
583 | } else { |
584 | fel = &fe->id2.i_list; | |
585 | fel->l_tree_depth = 0; | |
586 | fel->l_next_free_rec = 0; | |
587 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
588 | } | |
ccd979bd | 589 | |
ec20cec7 | 590 | ocfs2_journal_dirty(handle, *new_fe_bh); |
ccd979bd | 591 | |
b657c95c | 592 | ocfs2_populate_inode(inode, fe, 1); |
0cf2f763 | 593 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
c271c5c2 SM |
594 | if (!ocfs2_mount_local(osb)) { |
595 | status = ocfs2_create_new_inode_locks(inode); | |
596 | if (status < 0) | |
597 | mlog_errno(status); | |
598 | } | |
ccd979bd | 599 | |
2931cdcb DW |
600 | oi->i_sync_tid = handle->h_transaction->t_tid; |
601 | oi->i_datasync_tid = handle->h_transaction->t_tid; | |
602 | ||
ccd979bd MF |
603 | leave: |
604 | if (status < 0) { | |
605 | if (*new_fe_bh) { | |
606 | brelse(*new_fe_bh); | |
607 | *new_fe_bh = NULL; | |
608 | } | |
ccd979bd MF |
609 | } |
610 | ||
c1e8d35e TM |
611 | if (status) |
612 | mlog_errno(status); | |
ccd979bd MF |
613 | return status; |
614 | } | |
615 | ||
021960ca MF |
616 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
617 | struct inode *dir, | |
618 | struct inode *inode, | |
619 | dev_t dev, | |
620 | struct buffer_head **new_fe_bh, | |
621 | struct buffer_head *parent_fe_bh, | |
622 | handle_t *handle, | |
623 | struct ocfs2_alloc_context *inode_ac) | |
624 | { | |
625 | int status = 0; | |
626 | u64 suballoc_loc, fe_blkno = 0; | |
627 | u16 suballoc_bit; | |
628 | ||
629 | *new_fe_bh = NULL; | |
630 | ||
631 | status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh, | |
632 | inode_ac, &suballoc_loc, | |
633 | &suballoc_bit, &fe_blkno); | |
634 | if (status < 0) { | |
635 | mlog_errno(status); | |
636 | return status; | |
637 | } | |
638 | ||
b1529a41 | 639 | status = __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh, |
021960ca MF |
640 | parent_fe_bh, handle, inode_ac, |
641 | fe_blkno, suballoc_loc, suballoc_bit); | |
b1529a41 | 642 | if (status < 0) { |
643 | u64 bg_blkno = ocfs2_which_suballoc_group(fe_blkno, suballoc_bit); | |
644 | int tmp = ocfs2_free_suballoc_bits(handle, inode_ac->ac_inode, | |
645 | inode_ac->ac_bh, suballoc_bit, bg_blkno, 1); | |
646 | if (tmp) | |
647 | mlog_errno(tmp); | |
648 | } | |
649 | ||
650 | return status; | |
021960ca MF |
651 | } |
652 | ||
ccd979bd MF |
653 | static int ocfs2_mkdir(struct inode *dir, |
654 | struct dentry *dentry, | |
18bb1db3 | 655 | umode_t mode) |
ccd979bd MF |
656 | { |
657 | int ret; | |
658 | ||
8990e44a TM |
659 | trace_ocfs2_mkdir(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
660 | OCFS2_I(dir)->ip_blkno, mode); | |
ccd979bd | 661 | ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0); |
c1e8d35e TM |
662 | if (ret) |
663 | mlog_errno(ret); | |
ccd979bd MF |
664 | |
665 | return ret; | |
666 | } | |
667 | ||
668 | static int ocfs2_create(struct inode *dir, | |
669 | struct dentry *dentry, | |
4acdaf27 | 670 | umode_t mode, |
ebfc3b49 | 671 | bool excl) |
ccd979bd MF |
672 | { |
673 | int ret; | |
674 | ||
8990e44a TM |
675 | trace_ocfs2_create(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
676 | (unsigned long long)OCFS2_I(dir)->ip_blkno, mode); | |
ccd979bd | 677 | ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0); |
c1e8d35e TM |
678 | if (ret) |
679 | mlog_errno(ret); | |
ccd979bd MF |
680 | |
681 | return ret; | |
682 | } | |
683 | ||
684 | static int ocfs2_link(struct dentry *old_dentry, | |
685 | struct inode *dir, | |
686 | struct dentry *dentry) | |
687 | { | |
1fabe148 | 688 | handle_t *handle; |
2b0143b5 DH |
689 | struct inode *inode = d_inode(old_dentry); |
690 | struct inode *old_dir = d_inode(old_dentry->d_parent); | |
ccd979bd MF |
691 | int err; |
692 | struct buffer_head *fe_bh = NULL; | |
53dc20b9 | 693 | struct buffer_head *old_dir_bh = NULL; |
ccd979bd | 694 | struct buffer_head *parent_fe_bh = NULL; |
ccd979bd MF |
695 | struct ocfs2_dinode *fe = NULL; |
696 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
4a12ca3a | 697 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 | 698 | sigset_t oldset; |
0e048316 | 699 | u64 old_de_ino; |
ccd979bd | 700 | |
8990e44a TM |
701 | trace_ocfs2_link((unsigned long long)OCFS2_I(inode)->ip_blkno, |
702 | old_dentry->d_name.len, old_dentry->d_name.name, | |
703 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 704 | |
123a9643 MF |
705 | if (S_ISDIR(inode->i_mode)) |
706 | return -EPERM; | |
ccd979bd | 707 | |
9c89fe0a JK |
708 | err = dquot_initialize(dir); |
709 | if (err) { | |
710 | mlog_errno(err); | |
711 | return err; | |
712 | } | |
907f4554 | 713 | |
53dc20b9 X |
714 | err = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
715 | &parent_fe_bh, dir, 0); | |
ccd979bd MF |
716 | if (err < 0) { |
717 | if (err != -ENOENT) | |
718 | mlog_errno(err); | |
123a9643 | 719 | return err; |
ccd979bd MF |
720 | } |
721 | ||
53dc20b9 X |
722 | /* make sure both dirs have bhs |
723 | * get an extra ref on old_dir_bh if old==new */ | |
724 | if (!parent_fe_bh) { | |
725 | if (old_dir_bh) { | |
726 | parent_fe_bh = old_dir_bh; | |
727 | get_bh(parent_fe_bh); | |
728 | } else { | |
729 | mlog(ML_ERROR, "%s: no old_dir_bh!\n", osb->uuid_str); | |
730 | err = -EIO; | |
731 | goto out; | |
732 | } | |
733 | } | |
734 | ||
0f62de2c TY |
735 | if (!dir->i_nlink) { |
736 | err = -ENOENT; | |
123a9643 | 737 | goto out; |
0f62de2c TY |
738 | } |
739 | ||
53dc20b9 | 740 | err = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
0e048316 X |
741 | old_dentry->d_name.len, &old_de_ino); |
742 | if (err) { | |
743 | err = -ENOENT; | |
744 | goto out; | |
745 | } | |
746 | ||
747 | /* | |
748 | * Check whether another node removed the source inode while we | |
749 | * were in the vfs. | |
750 | */ | |
751 | if (old_de_ino != OCFS2_I(inode)->ip_blkno) { | |
752 | err = -ENOENT; | |
753 | goto out; | |
754 | } | |
755 | ||
ccd979bd MF |
756 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
757 | dentry->d_name.len); | |
758 | if (err) | |
123a9643 | 759 | goto out; |
ccd979bd MF |
760 | |
761 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
762 | dentry->d_name.name, | |
4a12ca3a | 763 | dentry->d_name.len, &lookup); |
ccd979bd MF |
764 | if (err < 0) { |
765 | mlog_errno(err); | |
123a9643 | 766 | goto out; |
ccd979bd MF |
767 | } |
768 | ||
e63aecb6 | 769 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
770 | if (err < 0) { |
771 | if (err != -ENOENT) | |
772 | mlog_errno(err); | |
123a9643 | 773 | goto out; |
ccd979bd MF |
774 | } |
775 | ||
776 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
198a1ca3 | 777 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
ccd979bd | 778 | err = -EMLINK; |
123a9643 | 779 | goto out_unlock_inode; |
ccd979bd MF |
780 | } |
781 | ||
a90714c1 | 782 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
783 | if (IS_ERR(handle)) { |
784 | err = PTR_ERR(handle); | |
785 | handle = NULL; | |
786 | mlog_errno(err); | |
123a9643 | 787 | goto out_unlock_inode; |
ccd979bd MF |
788 | } |
789 | ||
547ba7c8 JB |
790 | /* Starting to change things, restart is no longer possible. */ |
791 | ocfs2_block_signals(&oldset); | |
792 | ||
0cf2f763 | 793 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 794 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
795 | if (err < 0) { |
796 | mlog_errno(err); | |
123a9643 | 797 | goto out_commit; |
ccd979bd MF |
798 | } |
799 | ||
d8c76e6f | 800 | inc_nlink(inode); |
ccd979bd | 801 | inode->i_ctime = CURRENT_TIME; |
198a1ca3 | 802 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
803 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
804 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
ec20cec7 | 805 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd MF |
806 | |
807 | err = ocfs2_add_entry(handle, dentry, inode, | |
808 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 809 | parent_fe_bh, &lookup); |
ccd979bd | 810 | if (err) { |
198a1ca3 | 811 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 812 | drop_nlink(inode); |
ccd979bd | 813 | mlog_errno(err); |
123a9643 | 814 | goto out_commit; |
ccd979bd MF |
815 | } |
816 | ||
0027dd5b | 817 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
818 | if (err) { |
819 | mlog_errno(err); | |
123a9643 | 820 | goto out_commit; |
379dfe9d MF |
821 | } |
822 | ||
7de9c6ee | 823 | ihold(inode); |
ccd979bd | 824 | d_instantiate(dentry, inode); |
123a9643 MF |
825 | |
826 | out_commit: | |
02dc1af4 | 827 | ocfs2_commit_trans(osb, handle); |
547ba7c8 | 828 | ocfs2_unblock_signals(&oldset); |
123a9643 | 829 | out_unlock_inode: |
e63aecb6 | 830 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
831 | |
832 | out: | |
53dc20b9 | 833 | ocfs2_double_unlock(old_dir, dir); |
123a9643 | 834 | |
a81cb88b MF |
835 | brelse(fe_bh); |
836 | brelse(parent_fe_bh); | |
53dc20b9 | 837 | brelse(old_dir_bh); |
ccd979bd | 838 | |
4a12ca3a MF |
839 | ocfs2_free_dir_lookup_result(&lookup); |
840 | ||
c1e8d35e TM |
841 | if (err) |
842 | mlog_errno(err); | |
ccd979bd MF |
843 | |
844 | return err; | |
845 | } | |
846 | ||
379dfe9d MF |
847 | /* |
848 | * Takes and drops an exclusive lock on the given dentry. This will | |
849 | * force other nodes to drop it. | |
850 | */ | |
851 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
852 | { | |
853 | int ret; | |
854 | ||
855 | ret = ocfs2_dentry_lock(dentry, 1); | |
856 | if (ret) | |
857 | mlog_errno(ret); | |
858 | else | |
859 | ocfs2_dentry_unlock(dentry, 1); | |
860 | ||
861 | return ret; | |
862 | } | |
863 | ||
b5a8bb71 | 864 | static inline int ocfs2_inode_is_unlinkable(struct inode *inode) |
17ff7856 MF |
865 | { |
866 | if (S_ISDIR(inode->i_mode)) { | |
867 | if (inode->i_nlink == 2) | |
868 | return 1; | |
869 | return 0; | |
870 | } | |
871 | ||
872 | if (inode->i_nlink == 1) | |
873 | return 1; | |
874 | return 0; | |
875 | } | |
876 | ||
ccd979bd MF |
877 | static int ocfs2_unlink(struct inode *dir, |
878 | struct dentry *dentry) | |
879 | { | |
880 | int status; | |
30a4f5e8 | 881 | int child_locked = 0; |
b5a8bb71 | 882 | bool is_unlinkable = false; |
2b0143b5 | 883 | struct inode *inode = d_inode(dentry); |
5098c27b | 884 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
885 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
886 | u64 blkno; | |
887 | struct ocfs2_dinode *fe = NULL; | |
888 | struct buffer_head *fe_bh = NULL; | |
889 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 890 | handle_t *handle = NULL; |
ccd979bd | 891 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
892 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
893 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd | 894 | |
8990e44a TM |
895 | trace_ocfs2_unlink(dir, dentry, dentry->d_name.len, |
896 | dentry->d_name.name, | |
897 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
898 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 899 | |
9c89fe0a JK |
900 | status = dquot_initialize(dir); |
901 | if (status) { | |
902 | mlog_errno(status); | |
903 | return status; | |
904 | } | |
907f4554 | 905 | |
2b0143b5 | 906 | BUG_ON(d_inode(dentry->d_parent) != dir); |
ccd979bd | 907 | |
8990e44a | 908 | if (inode == osb->root_inode) |
30a4f5e8 | 909 | return -EPERM; |
ccd979bd | 910 | |
cb25797d JK |
911 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
912 | OI_LS_PARENT); | |
ccd979bd MF |
913 | if (status < 0) { |
914 | if (status != -ENOENT) | |
915 | mlog_errno(status); | |
30a4f5e8 | 916 | return status; |
ccd979bd MF |
917 | } |
918 | ||
919 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
920 | dentry->d_name.len, &blkno, dir, |
921 | &lookup); | |
ccd979bd MF |
922 | if (status < 0) { |
923 | if (status != -ENOENT) | |
924 | mlog_errno(status); | |
925 | goto leave; | |
926 | } | |
927 | ||
928 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
929 | status = -ENOENT; | |
930 | ||
8990e44a TM |
931 | trace_ocfs2_unlink_noent( |
932 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
933 | (unsigned long long)blkno, | |
934 | OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
935 | goto leave; |
936 | } | |
937 | ||
e63aecb6 | 938 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
939 | if (status < 0) { |
940 | if (status != -ENOENT) | |
941 | mlog_errno(status); | |
942 | goto leave; | |
943 | } | |
30a4f5e8 | 944 | child_locked = 1; |
ccd979bd MF |
945 | |
946 | if (S_ISDIR(inode->i_mode)) { | |
b80b549c | 947 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
ccd979bd MF |
948 | status = -ENOTEMPTY; |
949 | goto leave; | |
950 | } | |
951 | } | |
952 | ||
379dfe9d | 953 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 954 | if (status < 0) { |
34d024f8 | 955 | /* This remote delete should succeed under all normal |
ccd979bd MF |
956 | * circumstances. */ |
957 | mlog_errno(status); | |
958 | goto leave; | |
959 | } | |
960 | ||
b5a8bb71 | 961 | if (ocfs2_inode_is_unlinkable(inode)) { |
19bd341f TM |
962 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
963 | OCFS2_I(inode)->ip_blkno, | |
06ee5c75 JQ |
964 | orphan_name, &orphan_insert, |
965 | false); | |
ccd979bd MF |
966 | if (status < 0) { |
967 | mlog_errno(status); | |
968 | goto leave; | |
969 | } | |
b5a8bb71 | 970 | is_unlinkable = true; |
ccd979bd MF |
971 | } |
972 | ||
a90714c1 | 973 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
974 | if (IS_ERR(handle)) { |
975 | status = PTR_ERR(handle); | |
976 | handle = NULL; | |
977 | mlog_errno(status); | |
978 | goto leave; | |
979 | } | |
980 | ||
0cf2f763 | 981 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 982 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
983 | if (status < 0) { |
984 | mlog_errno(status); | |
985 | goto leave; | |
986 | } | |
987 | ||
988 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
989 | ||
ccd979bd | 990 | /* delete the name from the parent dir */ |
4a12ca3a | 991 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
992 | if (status < 0) { |
993 | mlog_errno(status); | |
994 | goto leave; | |
995 | } | |
996 | ||
17ff7856 MF |
997 | if (S_ISDIR(inode->i_mode)) |
998 | drop_nlink(inode); | |
999 | drop_nlink(inode); | |
198a1ca3 | 1000 | ocfs2_set_links_count(fe, inode->i_nlink); |
ec20cec7 | 1001 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd | 1002 | |
592282cf MF |
1003 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; |
1004 | if (S_ISDIR(inode->i_mode)) | |
17ff7856 | 1005 | drop_nlink(dir); |
592282cf MF |
1006 | |
1007 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
1008 | if (status < 0) { | |
1009 | mlog_errno(status); | |
1010 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 1011 | inc_nlink(dir); |
b5a8bb71 YL |
1012 | goto leave; |
1013 | } | |
1014 | ||
1015 | if (is_unlinkable) { | |
1016 | status = ocfs2_orphan_add(osb, handle, inode, fe_bh, | |
06ee5c75 | 1017 | orphan_name, &orphan_insert, orphan_dir, false); |
b5a8bb71 YL |
1018 | if (status < 0) |
1019 | mlog_errno(status); | |
ccd979bd MF |
1020 | } |
1021 | ||
1022 | leave: | |
ccd979bd | 1023 | if (handle) |
02dc1af4 | 1024 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1025 | |
5098c27b MF |
1026 | if (orphan_dir) { |
1027 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1028 | ocfs2_inode_unlock(orphan_dir, 1); |
5955102c | 1029 | inode_unlock(orphan_dir); |
5098c27b MF |
1030 | iput(orphan_dir); |
1031 | } | |
1032 | ||
3cb2ec43 JQ |
1033 | if (child_locked) |
1034 | ocfs2_inode_unlock(inode, 1); | |
1035 | ||
1036 | ocfs2_inode_unlock(dir, 1); | |
1037 | ||
a81cb88b | 1038 | brelse(fe_bh); |
a81cb88b | 1039 | brelse(parent_node_bh); |
4a12ca3a MF |
1040 | |
1041 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1042 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd | 1043 | |
f5b25855 | 1044 | if (status && (status != -ENOTEMPTY) && (status != -ENOENT)) |
c1e8d35e | 1045 | mlog_errno(status); |
ccd979bd MF |
1046 | |
1047 | return status; | |
1048 | } | |
1049 | ||
f7a14f32 YJ |
1050 | static int ocfs2_check_if_ancestor(struct ocfs2_super *osb, |
1051 | u64 src_inode_no, u64 dest_inode_no) | |
1052 | { | |
1053 | int ret = 0, i = 0; | |
1054 | u64 parent_inode_no = 0; | |
1055 | u64 child_inode_no = src_inode_no; | |
1056 | struct inode *child_inode; | |
1057 | ||
1058 | #define MAX_LOOKUP_TIMES 32 | |
1059 | while (1) { | |
1060 | child_inode = ocfs2_iget(osb, child_inode_no, 0, 0); | |
1061 | if (IS_ERR(child_inode)) { | |
1062 | ret = PTR_ERR(child_inode); | |
1063 | break; | |
1064 | } | |
1065 | ||
1066 | ret = ocfs2_inode_lock(child_inode, NULL, 0); | |
1067 | if (ret < 0) { | |
1068 | iput(child_inode); | |
1069 | if (ret != -ENOENT) | |
1070 | mlog_errno(ret); | |
1071 | break; | |
1072 | } | |
1073 | ||
1074 | ret = ocfs2_lookup_ino_from_name(child_inode, "..", 2, | |
1075 | &parent_inode_no); | |
1076 | ocfs2_inode_unlock(child_inode, 0); | |
1077 | iput(child_inode); | |
1078 | if (ret < 0) { | |
1079 | ret = -ENOENT; | |
1080 | break; | |
1081 | } | |
1082 | ||
1083 | if (parent_inode_no == dest_inode_no) { | |
1084 | ret = 1; | |
1085 | break; | |
1086 | } | |
1087 | ||
1088 | if (parent_inode_no == osb->root_inode->i_ino) { | |
1089 | ret = 0; | |
1090 | break; | |
1091 | } | |
1092 | ||
1093 | child_inode_no = parent_inode_no; | |
1094 | ||
1095 | if (++i >= MAX_LOOKUP_TIMES) { | |
1096 | mlog(ML_NOTICE, "max lookup times reached, filesystem " | |
1097 | "may have nested directories, " | |
1098 | "src inode: %llu, dest inode: %llu.\n", | |
1099 | (unsigned long long)src_inode_no, | |
1100 | (unsigned long long)dest_inode_no); | |
1101 | ret = 0; | |
1102 | break; | |
1103 | } | |
1104 | } | |
1105 | ||
1106 | return ret; | |
1107 | } | |
1108 | ||
ccd979bd | 1109 | /* |
53dc20b9 | 1110 | * The only place this should be used is rename and link! |
ccd979bd MF |
1111 | * if they have the same id, then the 1st one is the only one locked. |
1112 | */ | |
1113 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
1114 | struct buffer_head **bh1, |
1115 | struct inode *inode1, | |
1116 | struct buffer_head **bh2, | |
53dc20b9 X |
1117 | struct inode *inode2, |
1118 | int rename) | |
ccd979bd MF |
1119 | { |
1120 | int status; | |
f7a14f32 | 1121 | int inode1_is_ancestor, inode2_is_ancestor; |
ccd979bd MF |
1122 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); |
1123 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
ccd979bd | 1124 | |
8990e44a TM |
1125 | trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno, |
1126 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 1127 | |
ccd979bd MF |
1128 | if (*bh1) |
1129 | *bh1 = NULL; | |
1130 | if (*bh2) | |
1131 | *bh2 = NULL; | |
1132 | ||
f7a14f32 YJ |
1133 | /* we always want to lock the one with the lower lockid first. |
1134 | * and if they are nested, we lock ancestor first */ | |
ccd979bd | 1135 | if (oi1->ip_blkno != oi2->ip_blkno) { |
f7a14f32 YJ |
1136 | inode1_is_ancestor = ocfs2_check_if_ancestor(osb, oi2->ip_blkno, |
1137 | oi1->ip_blkno); | |
1138 | if (inode1_is_ancestor < 0) { | |
1139 | status = inode1_is_ancestor; | |
1140 | goto bail; | |
1141 | } | |
1142 | ||
1143 | inode2_is_ancestor = ocfs2_check_if_ancestor(osb, oi1->ip_blkno, | |
1144 | oi2->ip_blkno); | |
1145 | if (inode2_is_ancestor < 0) { | |
1146 | status = inode2_is_ancestor; | |
1147 | goto bail; | |
1148 | } | |
1149 | ||
1150 | if ((inode1_is_ancestor == 1) || | |
1151 | (oi1->ip_blkno < oi2->ip_blkno && | |
1152 | inode2_is_ancestor == 0)) { | |
ccd979bd | 1153 | /* switch id1 and id2 around */ |
ab1ba021 FF |
1154 | swap(bh2, bh1); |
1155 | swap(inode2, inode1); | |
ccd979bd MF |
1156 | } |
1157 | /* lock id2 */ | |
cb25797d | 1158 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
53dc20b9 | 1159 | rename == 1 ? OI_LS_RENAME1 : OI_LS_PARENT); |
ccd979bd MF |
1160 | if (status < 0) { |
1161 | if (status != -ENOENT) | |
1162 | mlog_errno(status); | |
1163 | goto bail; | |
1164 | } | |
1165 | } | |
8d5596c6 | 1166 | |
ccd979bd | 1167 | /* lock id1 */ |
53dc20b9 X |
1168 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, |
1169 | rename == 1 ? OI_LS_RENAME2 : OI_LS_PARENT); | |
ccd979bd | 1170 | if (status < 0) { |
8d5596c6 MF |
1171 | /* |
1172 | * An error return must mean that no cluster locks | |
1173 | * were held on function exit. | |
1174 | */ | |
1e6d9153 | 1175 | if (oi1->ip_blkno != oi2->ip_blkno) { |
e63aecb6 | 1176 | ocfs2_inode_unlock(inode2, 1); |
1e6d9153 TM |
1177 | brelse(*bh2); |
1178 | *bh2 = NULL; | |
1179 | } | |
8d5596c6 | 1180 | |
ccd979bd MF |
1181 | if (status != -ENOENT) |
1182 | mlog_errno(status); | |
ccd979bd | 1183 | } |
8d5596c6 | 1184 | |
8990e44a TM |
1185 | trace_ocfs2_double_lock_end( |
1186 | (unsigned long long)OCFS2_I(inode1)->ip_blkno, | |
1187 | (unsigned long long)OCFS2_I(inode2)->ip_blkno); | |
1188 | ||
ccd979bd | 1189 | bail: |
c1e8d35e TM |
1190 | if (status) |
1191 | mlog_errno(status); | |
ccd979bd MF |
1192 | return status; |
1193 | } | |
1194 | ||
8d5596c6 MF |
1195 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
1196 | { | |
e63aecb6 | 1197 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
1198 | |
1199 | if (inode1 != inode2) | |
e63aecb6 | 1200 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1201 | } |
1202 | ||
ccd979bd MF |
1203 | static int ocfs2_rename(struct inode *old_dir, |
1204 | struct dentry *old_dentry, | |
1205 | struct inode *new_dir, | |
1206 | struct dentry *new_dentry) | |
1207 | { | |
4a12ca3a MF |
1208 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1209 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
2b0143b5 DH |
1210 | struct inode *old_inode = d_inode(old_dentry); |
1211 | struct inode *new_inode = d_inode(new_dentry); | |
5098c27b | 1212 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1213 | struct ocfs2_dinode *newfe = NULL; |
1214 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
ccd979bd | 1215 | struct buffer_head *newfe_bh = NULL; |
592282cf | 1216 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd | 1217 | struct ocfs2_super *osb = NULL; |
5b6a3a2b | 1218 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1219 | handle_t *handle = NULL; |
ccd979bd MF |
1220 | struct buffer_head *old_dir_bh = NULL; |
1221 | struct buffer_head *new_dir_bh = NULL; | |
847c9db5 | 1222 | u32 old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1223 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1224 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1225 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1226 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1227 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1228 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
5fb1beb0 | 1229 | bool should_add_orphan = false; |
ccd979bd MF |
1230 | |
1231 | /* At some point it might be nice to break this function up a | |
1232 | * bit. */ | |
1233 | ||
8990e44a TM |
1234 | trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry, |
1235 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1236 | new_dentry->d_name.len, new_dentry->d_name.name); | |
ccd979bd | 1237 | |
9c89fe0a JK |
1238 | status = dquot_initialize(old_dir); |
1239 | if (status) { | |
1240 | mlog_errno(status); | |
1241 | goto bail; | |
1242 | } | |
1243 | status = dquot_initialize(new_dir); | |
1244 | if (status) { | |
1245 | mlog_errno(status); | |
1246 | goto bail; | |
1247 | } | |
907f4554 | 1248 | |
ccd979bd MF |
1249 | osb = OCFS2_SB(old_dir->i_sb); |
1250 | ||
1251 | if (new_inode) { | |
1252 | if (!igrab(new_inode)) | |
1253 | BUG(); | |
1254 | } | |
1255 | ||
1b3c3714 | 1256 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1257 | * a/b/c |
1258 | * a/d | |
1259 | * a,b,c, and d are all directories. | |
1260 | * | |
1261 | * from cwd of 'a' on both nodes: | |
1262 | * node1: mv b/c d | |
1263 | * node2: mv d b/c | |
1264 | * | |
1265 | * And that's why, just like the VFS, we need a file system | |
1266 | * rename lock. */ | |
5dabd695 | 1267 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1268 | status = ocfs2_rename_lock(osb); |
1269 | if (status < 0) { | |
1270 | mlog_errno(status); | |
1271 | goto bail; | |
1272 | } | |
1273 | rename_lock = 1; | |
f7a14f32 YJ |
1274 | |
1275 | /* here we cannot guarantee the inodes haven't just been | |
1276 | * changed, so check if they are nested again */ | |
1277 | status = ocfs2_check_if_ancestor(osb, new_dir->i_ino, | |
1278 | old_inode->i_ino); | |
1279 | if (status < 0) { | |
1280 | mlog_errno(status); | |
1281 | goto bail; | |
1282 | } else if (status == 1) { | |
1283 | status = -EPERM; | |
1284 | trace_ocfs2_rename_not_permitted( | |
1285 | (unsigned long long)old_inode->i_ino, | |
1286 | (unsigned long long)new_dir->i_ino); | |
1287 | goto bail; | |
1288 | } | |
ccd979bd MF |
1289 | } |
1290 | ||
ccd979bd | 1291 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 | 1292 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
53dc20b9 | 1293 | &new_dir_bh, new_dir, 1); |
ccd979bd MF |
1294 | if (status < 0) { |
1295 | mlog_errno(status); | |
1296 | goto bail; | |
1297 | } | |
8d5596c6 | 1298 | parents_locked = 1; |
ccd979bd | 1299 | |
928dda1f YJ |
1300 | if (!new_dir->i_nlink) { |
1301 | status = -EACCES; | |
1302 | goto bail; | |
1303 | } | |
1304 | ||
ccd979bd MF |
1305 | /* make sure both dirs have bhs |
1306 | * get an extra ref on old_dir_bh if old==new */ | |
1307 | if (!new_dir_bh) { | |
1308 | if (old_dir_bh) { | |
1309 | new_dir_bh = old_dir_bh; | |
1310 | get_bh(new_dir_bh); | |
1311 | } else { | |
1312 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1313 | status = -EIO; | |
1314 | goto bail; | |
1315 | } | |
1316 | } | |
1317 | ||
379dfe9d | 1318 | /* |
592282cf | 1319 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1320 | * also ensures that the downconvert thread on other nodes |
1321 | * won't have to concurrently downconvert the inode and the | |
1322 | * dentry locks. | |
379dfe9d | 1323 | */ |
cb25797d JK |
1324 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
1325 | OI_LS_PARENT); | |
379dfe9d MF |
1326 | if (status < 0) { |
1327 | if (status != -ENOENT) | |
ccd979bd | 1328 | mlog_errno(status); |
379dfe9d MF |
1329 | goto bail; |
1330 | } | |
8d5596c6 | 1331 | old_child_locked = 1; |
ccd979bd | 1332 | |
379dfe9d MF |
1333 | status = ocfs2_remote_dentry_delete(old_dentry); |
1334 | if (status < 0) { | |
1335 | mlog_errno(status); | |
1336 | goto bail; | |
1337 | } | |
1338 | ||
1339 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1340 | u64 old_inode_parent; |
1341 | ||
4a12ca3a | 1342 | update_dot_dot = 1; |
38760e24 | 1343 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1344 | old_inode, |
1345 | &old_inode_dot_dot_res); | |
38760e24 MF |
1346 | if (status) { |
1347 | status = -EIO; | |
ccd979bd | 1348 | goto bail; |
38760e24 | 1349 | } |
ccd979bd | 1350 | |
38760e24 MF |
1351 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1352 | status = -EIO; | |
ccd979bd | 1353 | goto bail; |
38760e24 MF |
1354 | } |
1355 | ||
1356 | if (!new_inode && new_dir != old_dir && | |
198a1ca3 | 1357 | new_dir->i_nlink >= ocfs2_link_max(osb)) { |
38760e24 | 1358 | status = -EMLINK; |
ccd979bd | 1359 | goto bail; |
38760e24 | 1360 | } |
ccd979bd MF |
1361 | } |
1362 | ||
5b6a3a2b MF |
1363 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1364 | old_dentry->d_name.len, | |
1365 | &old_de_ino); | |
1366 | if (status) { | |
1367 | status = -ENOENT; | |
ccd979bd | 1368 | goto bail; |
5b6a3a2b | 1369 | } |
ccd979bd MF |
1370 | |
1371 | /* | |
1372 | * Check for inode number is _not_ due to possible IO errors. | |
1373 | * We might rmdir the source, keep it as pwd of some process | |
1374 | * and merrily kill the link to whatever was created under the | |
1375 | * same name. Goodbye sticky bit ;-< | |
1376 | */ | |
5b6a3a2b MF |
1377 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1378 | status = -ENOENT; | |
ccd979bd | 1379 | goto bail; |
5b6a3a2b | 1380 | } |
ccd979bd MF |
1381 | |
1382 | /* check if the target already exists (in which case we need | |
1383 | * to delete it */ | |
1384 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1385 | new_dentry->d_name.len, | |
4a12ca3a MF |
1386 | &newfe_blkno, new_dir, |
1387 | &target_lookup_res); | |
ccd979bd MF |
1388 | /* The only error we allow here is -ENOENT because the new |
1389 | * file not existing is perfectly valid. */ | |
1390 | if ((status < 0) && (status != -ENOENT)) { | |
1391 | /* If we cannot find the file specified we should just */ | |
1392 | /* return the error... */ | |
1393 | mlog_errno(status); | |
1394 | goto bail; | |
1395 | } | |
4a12ca3a MF |
1396 | if (status == 0) |
1397 | target_exists = 1; | |
ccd979bd | 1398 | |
4a12ca3a | 1399 | if (!target_exists && new_inode) { |
e325a88f SE |
1400 | /* |
1401 | * Target was unlinked by another node while we were | |
1402 | * waiting to get to ocfs2_rename(). There isn't | |
1403 | * anything we can do here to help the situation, so | |
1404 | * bubble up the appropriate error. | |
1405 | */ | |
1406 | status = -ENOENT; | |
1407 | goto bail; | |
1408 | } | |
ccd979bd MF |
1409 | |
1410 | /* In case we need to overwrite an existing file, we blow it | |
1411 | * away first */ | |
4a12ca3a | 1412 | if (target_exists) { |
ccd979bd MF |
1413 | /* VFS didn't think there existed an inode here, but |
1414 | * someone else in the cluster must have raced our | |
1415 | * rename to create one. Today we error cleanly, in | |
1416 | * the future we should consider calling iget to build | |
1417 | * a new struct inode for this entry. */ | |
1418 | if (!new_inode) { | |
1419 | status = -EACCES; | |
1420 | ||
8990e44a TM |
1421 | trace_ocfs2_rename_target_exists(new_dentry->d_name.len, |
1422 | new_dentry->d_name.name); | |
ccd979bd MF |
1423 | goto bail; |
1424 | } | |
1425 | ||
1426 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1427 | status = -EACCES; | |
1428 | ||
8990e44a | 1429 | trace_ocfs2_rename_disagree( |
b0697053 MF |
1430 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, |
1431 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1432 | OCFS2_I(new_inode)->ip_flags); |
1433 | goto bail; | |
1434 | } | |
1435 | ||
e63aecb6 | 1436 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1437 | if (status < 0) { |
1438 | if (status != -ENOENT) | |
1439 | mlog_errno(status); | |
1440 | goto bail; | |
1441 | } | |
8d5596c6 | 1442 | new_child_locked = 1; |
ccd979bd | 1443 | |
379dfe9d | 1444 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1445 | if (status < 0) { |
1446 | mlog_errno(status); | |
1447 | goto bail; | |
1448 | } | |
1449 | ||
1450 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1451 | ||
8990e44a | 1452 | trace_ocfs2_rename_over_existing( |
b0697053 | 1453 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1454 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1455 | ||
1456 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1457 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
19bd341f | 1458 | OCFS2_I(new_inode)->ip_blkno, |
06ee5c75 JQ |
1459 | orphan_name, &orphan_insert, |
1460 | false); | |
ccd979bd MF |
1461 | if (status < 0) { |
1462 | mlog_errno(status); | |
1463 | goto bail; | |
1464 | } | |
5fb1beb0 | 1465 | should_add_orphan = true; |
ccd979bd MF |
1466 | } |
1467 | } else { | |
2b0143b5 | 1468 | BUG_ON(d_inode(new_dentry->d_parent) != new_dir); |
ccd979bd MF |
1469 | |
1470 | status = ocfs2_check_dir_for_entry(new_dir, | |
1471 | new_dentry->d_name.name, | |
1472 | new_dentry->d_name.len); | |
1473 | if (status) | |
1474 | goto bail; | |
1475 | ||
1476 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1477 | new_dentry->d_name.name, | |
1478 | new_dentry->d_name.len, | |
4a12ca3a | 1479 | &target_insert); |
ccd979bd MF |
1480 | if (status < 0) { |
1481 | mlog_errno(status); | |
1482 | goto bail; | |
1483 | } | |
1484 | } | |
1485 | ||
a90714c1 | 1486 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1487 | if (IS_ERR(handle)) { |
1488 | status = PTR_ERR(handle); | |
1489 | handle = NULL; | |
1490 | mlog_errno(status); | |
1491 | goto bail; | |
1492 | } | |
1493 | ||
4a12ca3a | 1494 | if (target_exists) { |
ccd979bd | 1495 | if (S_ISDIR(new_inode->i_mode)) { |
b80b549c MF |
1496 | if (new_inode->i_nlink != 2 || |
1497 | !ocfs2_empty_dir(new_inode)) { | |
ccd979bd MF |
1498 | status = -ENOTEMPTY; |
1499 | goto bail; | |
1500 | } | |
1501 | } | |
0cf2f763 JB |
1502 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
1503 | newfe_bh, | |
13723d00 | 1504 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1505 | if (status < 0) { |
1506 | mlog_errno(status); | |
1507 | goto bail; | |
1508 | } | |
1509 | ||
ccd979bd | 1510 | /* change the dirent to point to the correct inode */ |
4a12ca3a MF |
1511 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1512 | old_inode); | |
ccd979bd MF |
1513 | if (status < 0) { |
1514 | mlog_errno(status); | |
1515 | goto bail; | |
1516 | } | |
ccd979bd | 1517 | new_dir->i_version++; |
ccd979bd MF |
1518 | |
1519 | if (S_ISDIR(new_inode->i_mode)) | |
198a1ca3 | 1520 | ocfs2_set_links_count(newfe, 0); |
ccd979bd | 1521 | else |
198a1ca3 | 1522 | ocfs2_add_links_count(newfe, -1); |
ec20cec7 | 1523 | ocfs2_journal_dirty(handle, newfe_bh); |
5fb1beb0 | 1524 | if (should_add_orphan) { |
1525 | status = ocfs2_orphan_add(osb, handle, new_inode, | |
1526 | newfe_bh, orphan_name, | |
06ee5c75 | 1527 | &orphan_insert, orphan_dir, false); |
5fb1beb0 | 1528 | if (status < 0) { |
1529 | mlog_errno(status); | |
1530 | goto bail; | |
1531 | } | |
1532 | } | |
ccd979bd MF |
1533 | } else { |
1534 | /* if the name was not found in new_dir, add it now */ | |
1535 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1536 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1537 | new_dir_bh, &target_insert); |
ccd979bd MF |
1538 | } |
1539 | ||
1540 | old_inode->i_ctime = CURRENT_TIME; | |
1541 | mark_inode_dirty(old_inode); | |
480214d7 | 1542 | |
0cf2f763 JB |
1543 | status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), |
1544 | old_inode_bh, | |
13723d00 | 1545 | OCFS2_JOURNAL_ACCESS_WRITE); |
480214d7 SM |
1546 | if (status >= 0) { |
1547 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1548 | ||
1549 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); | |
1550 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); | |
ec20cec7 | 1551 | ocfs2_journal_dirty(handle, old_inode_bh); |
480214d7 SM |
1552 | } else |
1553 | mlog_errno(status); | |
ccd979bd | 1554 | |
5b6a3a2b MF |
1555 | /* |
1556 | * Now that the name has been added to new_dir, remove the old name. | |
1557 | * | |
1558 | * We don't keep any directory entry context around until now | |
1559 | * because the insert might have changed the type of directory | |
1560 | * we're dealing with. | |
1561 | */ | |
4a12ca3a MF |
1562 | status = ocfs2_find_entry(old_dentry->d_name.name, |
1563 | old_dentry->d_name.len, old_dir, | |
1564 | &old_entry_lookup); | |
807a7907 | 1565 | if (status) { |
1566 | if (!is_journal_aborted(osb->journal->j_journal)) { | |
1567 | ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " | |
1568 | "is not deleted.", | |
1569 | new_dentry->d_name.len, new_dentry->d_name.name, | |
1570 | old_dentry->d_name.len, old_dentry->d_name.name); | |
1571 | } | |
5b6a3a2b | 1572 | goto bail; |
807a7907 | 1573 | } |
5b6a3a2b | 1574 | |
4a12ca3a | 1575 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
ccd979bd MF |
1576 | if (status < 0) { |
1577 | mlog_errno(status); | |
807a7907 | 1578 | if (!is_journal_aborted(osb->journal->j_journal)) { |
1579 | ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " | |
1580 | "is not deleted.", | |
1581 | new_dentry->d_name.len, new_dentry->d_name.name, | |
1582 | old_dentry->d_name.len, old_dentry->d_name.name); | |
1583 | } | |
ccd979bd MF |
1584 | goto bail; |
1585 | } | |
1586 | ||
1587 | if (new_inode) { | |
6d6b77f1 | 1588 | drop_nlink(new_inode); |
ccd979bd MF |
1589 | new_inode->i_ctime = CURRENT_TIME; |
1590 | } | |
1591 | old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME; | |
4a12ca3a MF |
1592 | |
1593 | if (update_dot_dot) { | |
1594 | status = ocfs2_update_entry(old_inode, handle, | |
1595 | &old_inode_dot_dot_res, new_dir); | |
6d6b77f1 | 1596 | drop_nlink(old_dir); |
ccd979bd | 1597 | if (new_inode) { |
6d6b77f1 | 1598 | drop_nlink(new_inode); |
ccd979bd | 1599 | } else { |
d8c76e6f | 1600 | inc_nlink(new_dir); |
ccd979bd MF |
1601 | mark_inode_dirty(new_dir); |
1602 | } | |
1603 | } | |
1604 | mark_inode_dirty(old_dir); | |
592282cf MF |
1605 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1606 | if (new_inode) { | |
ccd979bd | 1607 | mark_inode_dirty(new_inode); |
592282cf MF |
1608 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1609 | } | |
ccd979bd | 1610 | |
592282cf MF |
1611 | if (old_dir != new_dir) { |
1612 | /* Keep the same times on both directories.*/ | |
1613 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; | |
1614 | ||
1615 | /* | |
1616 | * This will also pick up the i_nlink change from the | |
1617 | * block above. | |
1618 | */ | |
1619 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1620 | } | |
ccd979bd MF |
1621 | |
1622 | if (old_dir_nlink != old_dir->i_nlink) { | |
1623 | if (!old_dir_bh) { | |
1624 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1625 | "%llu from %d to %d but bh is NULL!\n", |
1626 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1627 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1628 | } else { |
1629 | struct ocfs2_dinode *fe; | |
0cf2f763 JB |
1630 | status = ocfs2_journal_access_di(handle, |
1631 | INODE_CACHE(old_dir), | |
1632 | old_dir_bh, | |
1633 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd | 1634 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
198a1ca3 | 1635 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
ec20cec7 | 1636 | ocfs2_journal_dirty(handle, old_dir_bh); |
ccd979bd MF |
1637 | } |
1638 | } | |
379dfe9d | 1639 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1640 | status = 0; |
1641 | bail: | |
ccd979bd | 1642 | if (handle) |
02dc1af4 | 1643 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1644 | |
5098c27b MF |
1645 | if (orphan_dir) { |
1646 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1647 | ocfs2_inode_unlock(orphan_dir, 1); |
5955102c | 1648 | inode_unlock(orphan_dir); |
5098c27b MF |
1649 | iput(orphan_dir); |
1650 | } | |
1651 | ||
3cb2ec43 JQ |
1652 | if (new_child_locked) |
1653 | ocfs2_inode_unlock(new_inode, 1); | |
1654 | ||
1655 | if (old_child_locked) | |
1656 | ocfs2_inode_unlock(old_inode, 1); | |
1657 | ||
1658 | if (parents_locked) | |
1659 | ocfs2_double_unlock(old_dir, new_dir); | |
1660 | ||
1661 | if (rename_lock) | |
1662 | ocfs2_rename_unlock(osb); | |
1663 | ||
ccd979bd MF |
1664 | if (new_inode) |
1665 | sync_mapping_buffers(old_inode->i_mapping); | |
1666 | ||
72865d92 | 1667 | iput(new_inode); |
4a12ca3a MF |
1668 | |
1669 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1670 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1671 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1672 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1673 | ocfs2_free_dir_lookup_result(&target_insert); | |
1674 | ||
a81cb88b MF |
1675 | brelse(newfe_bh); |
1676 | brelse(old_inode_bh); | |
1677 | brelse(old_dir_bh); | |
1678 | brelse(new_dir_bh); | |
ccd979bd | 1679 | |
c1e8d35e TM |
1680 | if (status) |
1681 | mlog_errno(status); | |
ccd979bd MF |
1682 | |
1683 | return status; | |
1684 | } | |
1685 | ||
1686 | /* | |
1687 | * we expect i_size = strlen(symname). Copy symname into the file | |
1688 | * data, including the null terminator. | |
1689 | */ | |
1690 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1691 | handle_t *handle, |
ccd979bd MF |
1692 | struct inode *inode, |
1693 | const char *symname) | |
1694 | { | |
1695 | struct buffer_head **bhs = NULL; | |
1696 | const char *c; | |
1697 | struct super_block *sb = osb->sb; | |
4f902c37 | 1698 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1699 | int virtual, blocks, status, i, bytes_left; |
1700 | ||
1701 | bytes_left = i_size_read(inode) + 1; | |
1702 | /* we can't trust i_blocks because we're actually going to | |
1703 | * write i_size + 1 bytes. */ | |
1704 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1705 | ||
8990e44a TM |
1706 | trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks, |
1707 | i_size_read(inode), blocks); | |
ccd979bd MF |
1708 | |
1709 | /* Sanity check -- make sure we're going to fit. */ | |
1710 | if (bytes_left > | |
1711 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1712 | status = -EIO; | |
1713 | mlog_errno(status); | |
1714 | goto bail; | |
1715 | } | |
1716 | ||
1717 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1718 | if (!bhs) { | |
1719 | status = -ENOMEM; | |
1720 | mlog_errno(status); | |
1721 | goto bail; | |
1722 | } | |
1723 | ||
49cb8d2d MF |
1724 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1725 | NULL); | |
ccd979bd MF |
1726 | if (status < 0) { |
1727 | mlog_errno(status); | |
1728 | goto bail; | |
1729 | } | |
1730 | ||
1731 | /* links can never be larger than one cluster so we know this | |
1732 | * is all going to be contiguous, but do a sanity check | |
1733 | * anyway. */ | |
1734 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1735 | status = -EIO; | |
1736 | mlog_errno(status); | |
1737 | goto bail; | |
1738 | } | |
1739 | ||
1740 | virtual = 0; | |
1741 | while(bytes_left > 0) { | |
1742 | c = &symname[virtual * sb->s_blocksize]; | |
1743 | ||
1744 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1745 | if (!bhs[virtual]) { | |
1746 | status = -ENOMEM; | |
1747 | mlog_errno(status); | |
1748 | goto bail; | |
1749 | } | |
8cb471e8 JB |
1750 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
1751 | bhs[virtual]); | |
ccd979bd | 1752 | |
0cf2f763 JB |
1753 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
1754 | bhs[virtual], | |
ccd979bd MF |
1755 | OCFS2_JOURNAL_ACCESS_CREATE); |
1756 | if (status < 0) { | |
1757 | mlog_errno(status); | |
1758 | goto bail; | |
1759 | } | |
1760 | ||
1761 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1762 | ||
1763 | memcpy(bhs[virtual]->b_data, c, | |
1764 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1765 | bytes_left); | |
1766 | ||
ec20cec7 | 1767 | ocfs2_journal_dirty(handle, bhs[virtual]); |
ccd979bd MF |
1768 | |
1769 | virtual++; | |
1770 | p_blkno++; | |
1771 | bytes_left -= sb->s_blocksize; | |
1772 | } | |
1773 | ||
1774 | status = 0; | |
1775 | bail: | |
1776 | ||
1777 | if (bhs) { | |
1778 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1779 | brelse(bhs[i]); |
ccd979bd MF |
1780 | kfree(bhs); |
1781 | } | |
1782 | ||
c1e8d35e TM |
1783 | if (status) |
1784 | mlog_errno(status); | |
ccd979bd MF |
1785 | return status; |
1786 | } | |
1787 | ||
1788 | static int ocfs2_symlink(struct inode *dir, | |
1789 | struct dentry *dentry, | |
1790 | const char *symname) | |
1791 | { | |
1792 | int status, l, credits; | |
1793 | u64 newsize; | |
1794 | struct ocfs2_super *osb = NULL; | |
1795 | struct inode *inode = NULL; | |
1796 | struct super_block *sb; | |
1797 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1798 | struct buffer_head *parent_fe_bh = NULL; |
1799 | struct ocfs2_dinode *fe = NULL; | |
1800 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1801 | handle_t *handle = NULL; |
ccd979bd MF |
1802 | struct ocfs2_alloc_context *inode_ac = NULL; |
1803 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1804 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1805 | int want_clusters = 0; | |
1806 | int xattr_credits = 0; | |
1807 | struct ocfs2_security_xattr_info si = { | |
1808 | .enable = 1, | |
1809 | }; | |
a90714c1 | 1810 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1811 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
1812 | sigset_t oldset; |
1813 | int did_block_signals = 0; | |
595297a8 | 1814 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 1815 | |
8990e44a TM |
1816 | trace_ocfs2_symlink_begin(dir, dentry, symname, |
1817 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 1818 | |
9c89fe0a JK |
1819 | status = dquot_initialize(dir); |
1820 | if (status) { | |
1821 | mlog_errno(status); | |
1822 | goto bail; | |
1823 | } | |
907f4554 | 1824 | |
ccd979bd MF |
1825 | sb = dir->i_sb; |
1826 | osb = OCFS2_SB(sb); | |
1827 | ||
1828 | l = strlen(symname) + 1; | |
1829 | ||
1830 | credits = ocfs2_calc_symlink_credits(sb); | |
1831 | ||
ccd979bd | 1832 | /* lock the parent directory */ |
e63aecb6 | 1833 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1834 | if (status < 0) { |
1835 | if (status != -ENOENT) | |
1836 | mlog_errno(status); | |
6d8fc40e | 1837 | return status; |
ccd979bd MF |
1838 | } |
1839 | ||
1840 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
198a1ca3 | 1841 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
1842 | /* can't make a file in a deleted directory. */ |
1843 | status = -ENOENT; | |
1844 | goto bail; | |
1845 | } | |
1846 | ||
1847 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1848 | dentry->d_name.len); | |
1849 | if (status) | |
1850 | goto bail; | |
1851 | ||
1852 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1853 | dentry->d_name.name, | |
4a12ca3a | 1854 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1855 | if (status < 0) { |
1856 | mlog_errno(status); | |
1857 | goto bail; | |
1858 | } | |
1859 | ||
da5cbf2f | 1860 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1861 | if (status < 0) { |
1862 | if (status != -ENOSPC) | |
1863 | mlog_errno(status); | |
1864 | goto bail; | |
1865 | } | |
1866 | ||
f5d36202 | 1867 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
9c89fe0a JK |
1868 | if (IS_ERR(inode)) { |
1869 | status = PTR_ERR(inode); | |
1870 | inode = NULL; | |
f5d36202 TY |
1871 | mlog_errno(status); |
1872 | goto bail; | |
1873 | } | |
1874 | ||
534eaddd | 1875 | /* get security xattr */ |
2a7dba39 | 1876 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
1877 | if (status) { |
1878 | if (status == -EOPNOTSUPP) | |
1879 | si.enable = 0; | |
1880 | else { | |
1881 | mlog_errno(status); | |
1882 | goto bail; | |
1883 | } | |
1884 | } | |
1885 | ||
1886 | /* calculate meta data/clusters for setting security xattr */ | |
1887 | if (si.enable) { | |
1888 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1889 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1890 | if (status < 0) { |
534eaddd | 1891 | mlog_errno(status); |
ccd979bd MF |
1892 | goto bail; |
1893 | } | |
1894 | } | |
1895 | ||
534eaddd TY |
1896 | /* don't reserve bitmap space for fast symlinks. */ |
1897 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1898 | want_clusters += 1; | |
1899 | ||
1900 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1901 | if (status < 0) { | |
1902 | if (status != -ENOSPC) | |
1903 | mlog_errno(status); | |
1904 | goto bail; | |
1905 | } | |
1906 | ||
1907 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1908 | if (IS_ERR(handle)) { |
1909 | status = PTR_ERR(handle); | |
1910 | handle = NULL; | |
1911 | mlog_errno(status); | |
1912 | goto bail; | |
1913 | } | |
1914 | ||
547ba7c8 JB |
1915 | /* Starting to change things, restart is no longer possible. */ |
1916 | ocfs2_block_signals(&oldset); | |
1917 | did_block_signals = 1; | |
1918 | ||
63936dda CH |
1919 | status = dquot_alloc_inode(inode); |
1920 | if (status) | |
a90714c1 | 1921 | goto bail; |
a90714c1 JK |
1922 | did_quota_inode = 1; |
1923 | ||
8990e44a TM |
1924 | trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len, |
1925 | dentry->d_name.name, | |
1926 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
1927 | inode->i_mode); | |
19bd341f TM |
1928 | |
1929 | status = ocfs2_mknod_locked(osb, dir, inode, | |
f5d36202 TY |
1930 | 0, &new_fe_bh, parent_fe_bh, handle, |
1931 | inode_ac); | |
ccd979bd MF |
1932 | if (status < 0) { |
1933 | mlog_errno(status); | |
1934 | goto bail; | |
1935 | } | |
1936 | ||
1937 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1938 | inode->i_rdev = 0; | |
1939 | newsize = l - 1; | |
ea022dfb | 1940 | inode->i_op = &ocfs2_symlink_inode_operations; |
21fc61c7 | 1941 | inode_nohighmem(inode); |
ccd979bd | 1942 | if (l > ocfs2_fast_symlink_chars(sb)) { |
dcd0538f MF |
1943 | u32 offset = 0; |
1944 | ||
5dd4056d CH |
1945 | status = dquot_alloc_space_nodirty(inode, |
1946 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1947 | if (status) | |
a90714c1 | 1948 | goto bail; |
a90714c1 | 1949 | did_quota = 1; |
ea022dfb | 1950 | inode->i_mapping->a_ops = &ocfs2_aops; |
0eb8d47e TM |
1951 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1952 | new_fe_bh, | |
1953 | handle, data_ac, NULL, | |
1954 | NULL); | |
ccd979bd MF |
1955 | if (status < 0) { |
1956 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1957 | mlog(ML_ERROR, |
1958 | "Failed to extend file to %llu\n", | |
1959 | (unsigned long long)newsize); | |
ccd979bd MF |
1960 | mlog_errno(status); |
1961 | status = -ENOSPC; | |
1962 | } | |
1963 | goto bail; | |
1964 | } | |
1965 | i_size_write(inode, newsize); | |
8110b073 | 1966 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd | 1967 | } else { |
ea022dfb | 1968 | inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops; |
ccd979bd MF |
1969 | memcpy((char *) fe->id2.i_symlink, symname, l); |
1970 | i_size_write(inode, newsize); | |
1971 | inode->i_blocks = 0; | |
1972 | } | |
1973 | ||
1974 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1975 | if (status < 0) { | |
1976 | mlog_errno(status); | |
1977 | goto bail; | |
1978 | } | |
1979 | ||
1980 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
1981 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
1982 | symname); | |
1983 | if (status < 0) { | |
1984 | mlog_errno(status); | |
1985 | goto bail; | |
1986 | } | |
1987 | } | |
1988 | ||
534eaddd TY |
1989 | if (si.enable) { |
1990 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
1991 | xattr_ac, data_ac); | |
1992 | if (status < 0) { | |
1993 | mlog_errno(status); | |
1994 | goto bail; | |
1995 | } | |
1996 | } | |
1997 | ||
a9743fcd MF |
1998 | /* |
1999 | * Do this before adding the entry to the directory. We add | |
2000 | * also set d_op after success so that ->d_iput() will cleanup | |
2001 | * the dentry lock even if ocfs2_add_entry() fails below. | |
2002 | */ | |
2003 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); | |
2004 | if (status) { | |
ccd979bd MF |
2005 | mlog_errno(status); |
2006 | goto bail; | |
2007 | } | |
2008 | ||
595297a8 | 2009 | dl = dentry->d_fsdata; |
2010 | ||
a9743fcd MF |
2011 | status = ocfs2_add_entry(handle, dentry, inode, |
2012 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
2013 | &lookup); | |
2014 | if (status < 0) { | |
379dfe9d MF |
2015 | mlog_errno(status); |
2016 | goto bail; | |
2017 | } | |
2018 | ||
ccd979bd | 2019 | insert_inode_hash(inode); |
ccd979bd MF |
2020 | d_instantiate(dentry, inode); |
2021 | bail: | |
a90714c1 | 2022 | if (status < 0 && did_quota) |
5dd4056d | 2023 | dquot_free_space_nodirty(inode, |
a90714c1 JK |
2024 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
2025 | if (status < 0 && did_quota_inode) | |
63936dda | 2026 | dquot_free_inode(inode); |
ccd979bd | 2027 | if (handle) |
02dc1af4 | 2028 | ocfs2_commit_trans(osb, handle); |
6d8fc40e | 2029 | |
e63aecb6 | 2030 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
2031 | if (did_block_signals) |
2032 | ocfs2_unblock_signals(&oldset); | |
6d8fc40e | 2033 | |
a81cb88b MF |
2034 | brelse(new_fe_bh); |
2035 | brelse(parent_fe_bh); | |
534eaddd | 2036 | kfree(si.value); |
4a12ca3a | 2037 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
2038 | if (inode_ac) |
2039 | ocfs2_free_alloc_context(inode_ac); | |
2040 | if (data_ac) | |
2041 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
2042 | if (xattr_ac) |
2043 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 | 2044 | if ((status < 0) && inode) { |
595297a8 | 2045 | if (dl) |
2046 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
2047 | ||
ab41fdc8 | 2048 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
f5d36202 | 2049 | clear_nlink(inode); |
ccd979bd | 2050 | iput(inode); |
f5d36202 | 2051 | } |
ccd979bd | 2052 | |
c1e8d35e TM |
2053 | if (status) |
2054 | mlog_errno(status); | |
ccd979bd MF |
2055 | |
2056 | return status; | |
2057 | } | |
2058 | ||
ccd979bd MF |
2059 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
2060 | { | |
2061 | int status, namelen; | |
2062 | ||
b0697053 MF |
2063 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
2064 | (long long)blkno); | |
ccd979bd MF |
2065 | if (namelen <= 0) { |
2066 | if (namelen) | |
2067 | status = namelen; | |
2068 | else | |
2069 | status = -EINVAL; | |
2070 | mlog_errno(status); | |
2071 | goto bail; | |
2072 | } | |
2073 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
2074 | status = -EINVAL; | |
2075 | mlog_errno(status); | |
2076 | goto bail; | |
2077 | } | |
2078 | ||
8990e44a | 2079 | trace_ocfs2_blkno_stringify(blkno, name, namelen); |
ccd979bd MF |
2080 | |
2081 | status = 0; | |
2082 | bail: | |
c1e8d35e TM |
2083 | if (status < 0) |
2084 | mlog_errno(status); | |
ccd979bd MF |
2085 | return status; |
2086 | } | |
2087 | ||
dd43bcde MF |
2088 | static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb, |
2089 | struct inode **ret_orphan_dir, | |
2090 | struct buffer_head **ret_orphan_dir_bh) | |
ccd979bd | 2091 | { |
5098c27b | 2092 | struct inode *orphan_dir_inode; |
ccd979bd | 2093 | struct buffer_head *orphan_dir_bh = NULL; |
dd43bcde | 2094 | int ret = 0; |
ccd979bd MF |
2095 | |
2096 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2097 | ORPHAN_DIR_SYSTEM_INODE, | |
2098 | osb->slot_num); | |
2099 | if (!orphan_dir_inode) { | |
dd43bcde MF |
2100 | ret = -ENOENT; |
2101 | mlog_errno(ret); | |
2102 | return ret; | |
ccd979bd MF |
2103 | } |
2104 | ||
5955102c | 2105 | inode_lock(orphan_dir_inode); |
5098c27b | 2106 | |
dd43bcde MF |
2107 | ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2108 | if (ret < 0) { | |
5955102c | 2109 | inode_unlock(orphan_dir_inode); |
dd43bcde MF |
2110 | iput(orphan_dir_inode); |
2111 | ||
2112 | mlog_errno(ret); | |
2113 | return ret; | |
ccd979bd MF |
2114 | } |
2115 | ||
dd43bcde MF |
2116 | *ret_orphan_dir = orphan_dir_inode; |
2117 | *ret_orphan_dir_bh = orphan_dir_bh; | |
5098c27b | 2118 | |
dd43bcde MF |
2119 | return 0; |
2120 | } | |
2121 | ||
2122 | static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode, | |
2123 | struct buffer_head *orphan_dir_bh, | |
2124 | u64 blkno, | |
2125 | char *name, | |
06ee5c75 JQ |
2126 | struct ocfs2_dir_lookup_result *lookup, |
2127 | bool dio) | |
dd43bcde MF |
2128 | { |
2129 | int ret; | |
2130 | struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb); | |
06ee5c75 JQ |
2131 | int namelen = dio ? |
2132 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2133 | OCFS2_ORPHAN_NAMELEN; | |
2134 | ||
2135 | if (dio) { | |
2136 | ret = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2137 | OCFS2_DIO_ORPHAN_PREFIX); | |
2138 | if (ret != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2139 | ret = -EINVAL; | |
2140 | mlog_errno(ret); | |
2141 | return ret; | |
2142 | } | |
dd43bcde | 2143 | |
06ee5c75 JQ |
2144 | ret = ocfs2_blkno_stringify(blkno, |
2145 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2146 | } else | |
2147 | ret = ocfs2_blkno_stringify(blkno, name); | |
dd43bcde MF |
2148 | if (ret < 0) { |
2149 | mlog_errno(ret); | |
2150 | return ret; | |
2151 | } | |
2152 | ||
2153 | ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
2154 | orphan_dir_bh, name, | |
06ee5c75 | 2155 | namelen, lookup); |
dd43bcde MF |
2156 | if (ret < 0) { |
2157 | mlog_errno(ret); | |
2158 | return ret; | |
2159 | } | |
2160 | ||
2161 | return 0; | |
2162 | } | |
2163 | ||
2164 | /** | |
2165 | * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for | |
2166 | * insertion of an orphan. | |
2167 | * @osb: ocfs2 file system | |
2168 | * @ret_orphan_dir: Orphan dir inode - returned locked! | |
2169 | * @blkno: Actual block number of the inode to be inserted into orphan dir. | |
2170 | * @lookup: dir lookup result, to be passed back into functions like | |
2171 | * ocfs2_orphan_add | |
2172 | * | |
2173 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2174 | * fields will be populated. | |
2175 | * | |
2176 | * Returns non-zero on failure. | |
2177 | */ | |
2178 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
2179 | struct inode **ret_orphan_dir, | |
2180 | u64 blkno, | |
2181 | char *name, | |
06ee5c75 JQ |
2182 | struct ocfs2_dir_lookup_result *lookup, |
2183 | bool dio) | |
dd43bcde MF |
2184 | { |
2185 | struct inode *orphan_dir_inode = NULL; | |
2186 | struct buffer_head *orphan_dir_bh = NULL; | |
2187 | int ret = 0; | |
2188 | ||
2189 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode, | |
2190 | &orphan_dir_bh); | |
2191 | if (ret < 0) { | |
2192 | mlog_errno(ret); | |
2193 | return ret; | |
2194 | } | |
2195 | ||
2196 | ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh, | |
06ee5c75 | 2197 | blkno, name, lookup, dio); |
dd43bcde MF |
2198 | if (ret < 0) { |
2199 | mlog_errno(ret); | |
2200 | goto out; | |
ccd979bd MF |
2201 | } |
2202 | ||
5098c27b MF |
2203 | *ret_orphan_dir = orphan_dir_inode; |
2204 | ||
dd43bcde MF |
2205 | out: |
2206 | brelse(orphan_dir_bh); | |
2207 | ||
2208 | if (ret) { | |
2209 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2210 | inode_unlock(orphan_dir_inode); |
ccd979bd | 2211 | iput(orphan_dir_inode); |
5098c27b | 2212 | } |
ccd979bd | 2213 | |
c1e8d35e TM |
2214 | if (ret) |
2215 | mlog_errno(ret); | |
dd43bcde | 2216 | return ret; |
ccd979bd MF |
2217 | } |
2218 | ||
2219 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 2220 | handle_t *handle, |
ccd979bd | 2221 | struct inode *inode, |
3939fda4 | 2222 | struct buffer_head *fe_bh, |
ccd979bd | 2223 | char *name, |
4a12ca3a | 2224 | struct ocfs2_dir_lookup_result *lookup, |
06ee5c75 JQ |
2225 | struct inode *orphan_dir_inode, |
2226 | bool dio) | |
ccd979bd | 2227 | { |
ccd979bd MF |
2228 | struct buffer_head *orphan_dir_bh = NULL; |
2229 | int status = 0; | |
2230 | struct ocfs2_dinode *orphan_fe; | |
3939fda4 | 2231 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; |
06ee5c75 JQ |
2232 | int namelen = dio ? |
2233 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2234 | OCFS2_ORPHAN_NAMELEN; | |
ccd979bd | 2235 | |
8990e44a TM |
2236 | trace_ocfs2_orphan_add_begin( |
2237 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 2238 | |
b657c95c | 2239 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
2240 | if (status < 0) { |
2241 | mlog_errno(status); | |
2242 | goto leave; | |
2243 | } | |
2244 | ||
0cf2f763 JB |
2245 | status = ocfs2_journal_access_di(handle, |
2246 | INODE_CACHE(orphan_dir_inode), | |
2247 | orphan_dir_bh, | |
13723d00 | 2248 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2249 | if (status < 0) { |
2250 | mlog_errno(status); | |
2251 | goto leave; | |
2252 | } | |
2253 | ||
ea45466a YL |
2254 | /* |
2255 | * We're going to journal the change of i_flags and i_orphaned_slot. | |
2256 | * It's safe anyway, though some callers may duplicate the journaling. | |
2257 | * Journaling within the func just make the logic look more | |
2258 | * straightforward. | |
2259 | */ | |
2260 | status = ocfs2_journal_access_di(handle, | |
2261 | INODE_CACHE(inode), | |
2262 | fe_bh, | |
2263 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2264 | if (status < 0) { | |
2265 | mlog_errno(status); | |
2266 | goto leave; | |
2267 | } | |
2268 | ||
ccd979bd MF |
2269 | /* we're a cluster, and nlink can change on disk from |
2270 | * underneath us... */ | |
2271 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2272 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2273 | ocfs2_add_links_count(orphan_fe, 1); |
bfe86848 | 2274 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2275 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2276 | |
2277 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
06ee5c75 | 2278 | namelen, inode, |
ccd979bd | 2279 | OCFS2_I(inode)->ip_blkno, |
4a12ca3a | 2280 | orphan_dir_bh, lookup); |
ccd979bd MF |
2281 | if (status < 0) { |
2282 | mlog_errno(status); | |
ea45466a | 2283 | goto rollback; |
3939fda4 TY |
2284 | } |
2285 | ||
06ee5c75 JQ |
2286 | if (dio) { |
2287 | /* Update flag OCFS2_DIO_ORPHANED_FL and record the orphan | |
2288 | * slot. | |
2289 | */ | |
2290 | fe->i_flags |= cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2291 | fe->i_dio_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2292 | } else { | |
2293 | fe->i_flags |= cpu_to_le32(OCFS2_ORPHANED_FL); | |
2294 | OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR; | |
ccd979bd | 2295 | |
06ee5c75 JQ |
2296 | /* Record which orphan dir our inode now resides |
2297 | * in. delete_inode will use this to determine which orphan | |
2298 | * dir to lock. */ | |
2299 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2300 | } | |
ccd979bd | 2301 | |
3939fda4 TY |
2302 | ocfs2_journal_dirty(handle, fe_bh); |
2303 | ||
8990e44a TM |
2304 | trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno, |
2305 | osb->slot_num); | |
ccd979bd | 2306 | |
ea45466a YL |
2307 | rollback: |
2308 | if (status < 0) { | |
2309 | if (S_ISDIR(inode->i_mode)) | |
2310 | ocfs2_add_links_count(orphan_fe, -1); | |
2311 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); | |
2312 | } | |
2313 | ||
ccd979bd | 2314 | leave: |
a81cb88b | 2315 | brelse(orphan_dir_bh); |
ccd979bd | 2316 | |
ccd979bd MF |
2317 | return status; |
2318 | } | |
2319 | ||
2320 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
2321 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 2322 | handle_t *handle, |
ccd979bd MF |
2323 | struct inode *orphan_dir_inode, |
2324 | struct inode *inode, | |
06ee5c75 JQ |
2325 | struct buffer_head *orphan_dir_bh, |
2326 | bool dio) | |
ccd979bd | 2327 | { |
06ee5c75 JQ |
2328 | const int namelen = OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN; |
2329 | char name[namelen + 1]; | |
ccd979bd MF |
2330 | struct ocfs2_dinode *orphan_fe; |
2331 | int status = 0; | |
4a12ca3a | 2332 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd | 2333 | |
06ee5c75 JQ |
2334 | if (dio) { |
2335 | status = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2336 | OCFS2_DIO_ORPHAN_PREFIX); | |
2337 | if (status != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2338 | status = -EINVAL; | |
2339 | mlog_errno(status); | |
2340 | return status; | |
2341 | } | |
2342 | ||
2343 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, | |
2344 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2345 | } else | |
2346 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
ccd979bd MF |
2347 | if (status < 0) { |
2348 | mlog_errno(status); | |
2349 | goto leave; | |
2350 | } | |
2351 | ||
8990e44a TM |
2352 | trace_ocfs2_orphan_del( |
2353 | (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
e38a5739 | 2354 | name, strlen(name)); |
ccd979bd | 2355 | |
074a6c65 JQ |
2356 | status = ocfs2_journal_access_di(handle, |
2357 | INODE_CACHE(orphan_dir_inode), | |
2358 | orphan_dir_bh, | |
2359 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2360 | if (status < 0) { | |
2361 | mlog_errno(status); | |
2362 | goto leave; | |
2363 | } | |
2364 | ||
ccd979bd | 2365 | /* find it's spot in the orphan directory */ |
e38a5739 | 2366 | status = ocfs2_find_entry(name, strlen(name), orphan_dir_inode, |
4a12ca3a MF |
2367 | &lookup); |
2368 | if (status) { | |
ccd979bd MF |
2369 | mlog_errno(status); |
2370 | goto leave; | |
2371 | } | |
2372 | ||
2373 | /* remove it from the orphan directory */ | |
4a12ca3a | 2374 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
2375 | if (status < 0) { |
2376 | mlog_errno(status); | |
2377 | goto leave; | |
2378 | } | |
2379 | ||
ccd979bd MF |
2380 | /* do the i_nlink dance! :) */ |
2381 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2382 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2383 | ocfs2_add_links_count(orphan_fe, -1); |
bfe86848 | 2384 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2385 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2386 | |
2387 | leave: | |
4a12ca3a | 2388 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd | 2389 | |
c1e8d35e TM |
2390 | if (status) |
2391 | mlog_errno(status); | |
ccd979bd MF |
2392 | return status; |
2393 | } | |
2394 | ||
97b8f4a9 | 2395 | /** |
25985edc | 2396 | * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to receive a newly |
97b8f4a9 MF |
2397 | * allocated file. This is different from the typical 'add to orphan dir' |
2398 | * operation in that the inode does not yet exist. This is a problem because | |
2399 | * the orphan dir stringifies the inode block number to come up with it's | |
2400 | * dirent. Obviously if the inode does not yet exist we have a chicken and egg | |
2401 | * problem. This function works around it by calling deeper into the orphan | |
2402 | * and suballoc code than other callers. Use this only by necessity. | |
2403 | * @dir: The directory which this inode will ultimately wind up under - not the | |
2404 | * orphan dir! | |
2405 | * @dir_bh: buffer_head the @dir inode block | |
2406 | * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled | |
2407 | * with the string to be used for orphan dirent. Pass back to the orphan dir | |
2408 | * code. | |
2409 | * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan | |
2410 | * dir code. | |
2411 | * @ret_di_blkno: block number where the new inode will be allocated. | |
2412 | * @orphan_insert: Dir insert context to be passed back into orphan dir code. | |
2413 | * @ret_inode_ac: Inode alloc context to be passed back to the allocator. | |
2414 | * | |
2415 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2416 | * fields will be populated. | |
2417 | * | |
2418 | * Returns non-zero on failure. | |
2419 | */ | |
2420 | static int ocfs2_prep_new_orphaned_file(struct inode *dir, | |
2421 | struct buffer_head *dir_bh, | |
2422 | char *orphan_name, | |
2423 | struct inode **ret_orphan_dir, | |
2424 | u64 *ret_di_blkno, | |
2425 | struct ocfs2_dir_lookup_result *orphan_insert, | |
2426 | struct ocfs2_alloc_context **ret_inode_ac) | |
2427 | { | |
2428 | int ret; | |
2429 | u64 di_blkno; | |
2430 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2431 | struct inode *orphan_dir = NULL; | |
2432 | struct buffer_head *orphan_dir_bh = NULL; | |
2433 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2434 | ||
2435 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh); | |
2436 | if (ret < 0) { | |
2437 | mlog_errno(ret); | |
2438 | return ret; | |
2439 | } | |
2440 | ||
2441 | /* reserve an inode spot */ | |
2442 | ret = ocfs2_reserve_new_inode(osb, &inode_ac); | |
2443 | if (ret < 0) { | |
2444 | if (ret != -ENOSPC) | |
2445 | mlog_errno(ret); | |
2446 | goto out; | |
2447 | } | |
2448 | ||
2449 | ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac, | |
2450 | &di_blkno); | |
2451 | if (ret) { | |
2452 | mlog_errno(ret); | |
2453 | goto out; | |
2454 | } | |
2455 | ||
2456 | ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh, | |
06ee5c75 JQ |
2457 | di_blkno, orphan_name, orphan_insert, |
2458 | false); | |
97b8f4a9 MF |
2459 | if (ret < 0) { |
2460 | mlog_errno(ret); | |
2461 | goto out; | |
2462 | } | |
2463 | ||
2464 | out: | |
2465 | if (ret == 0) { | |
2466 | *ret_orphan_dir = orphan_dir; | |
2467 | *ret_di_blkno = di_blkno; | |
2468 | *ret_inode_ac = inode_ac; | |
2469 | /* | |
2470 | * orphan_name and orphan_insert are already up to | |
2471 | * date via prepare_orphan_dir | |
2472 | */ | |
2473 | } else { | |
2474 | /* Unroll reserve_new_inode* */ | |
2475 | if (inode_ac) | |
2476 | ocfs2_free_alloc_context(inode_ac); | |
2477 | ||
2478 | /* Unroll orphan dir locking */ | |
5955102c | 2479 | inode_unlock(orphan_dir); |
97b8f4a9 MF |
2480 | ocfs2_inode_unlock(orphan_dir, 1); |
2481 | iput(orphan_dir); | |
2482 | } | |
2483 | ||
2484 | brelse(orphan_dir_bh); | |
2485 | ||
7869e590 | 2486 | return ret; |
97b8f4a9 MF |
2487 | } |
2488 | ||
bc13d347 TM |
2489 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
2490 | int mode, | |
2491 | struct inode **new_inode) | |
2492 | { | |
2493 | int status, did_quota_inode = 0; | |
2494 | struct inode *inode = NULL; | |
2495 | struct inode *orphan_dir = NULL; | |
2496 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2497 | struct ocfs2_dinode *di = NULL; | |
2498 | handle_t *handle = NULL; | |
2499 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2500 | struct buffer_head *parent_di_bh = NULL; | |
2501 | struct buffer_head *new_di_bh = NULL; | |
2502 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2503 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
97b8f4a9 MF |
2504 | u64 uninitialized_var(di_blkno), suballoc_loc; |
2505 | u16 suballoc_bit; | |
bc13d347 TM |
2506 | |
2507 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2508 | if (status < 0) { | |
2509 | if (status != -ENOENT) | |
2510 | mlog_errno(status); | |
2511 | return status; | |
2512 | } | |
2513 | ||
97b8f4a9 MF |
2514 | status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh, |
2515 | orphan_name, &orphan_dir, | |
2516 | &di_blkno, &orphan_insert, &inode_ac); | |
bc13d347 TM |
2517 | if (status < 0) { |
2518 | if (status != -ENOSPC) | |
2519 | mlog_errno(status); | |
2520 | goto leave; | |
2521 | } | |
2522 | ||
2523 | inode = ocfs2_get_init_inode(dir, mode); | |
9c89fe0a JK |
2524 | if (IS_ERR(inode)) { |
2525 | status = PTR_ERR(inode); | |
2526 | inode = NULL; | |
bc13d347 TM |
2527 | mlog_errno(status); |
2528 | goto leave; | |
2529 | } | |
2530 | ||
2531 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); | |
2532 | if (IS_ERR(handle)) { | |
2533 | status = PTR_ERR(handle); | |
2534 | handle = NULL; | |
2535 | mlog_errno(status); | |
2536 | goto leave; | |
2537 | } | |
2538 | ||
63936dda CH |
2539 | status = dquot_alloc_inode(inode); |
2540 | if (status) | |
bc13d347 | 2541 | goto leave; |
bc13d347 TM |
2542 | did_quota_inode = 1; |
2543 | ||
97b8f4a9 MF |
2544 | status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac, |
2545 | &suballoc_loc, | |
2546 | &suballoc_bit, di_blkno); | |
bc13d347 TM |
2547 | if (status < 0) { |
2548 | mlog_errno(status); | |
2549 | goto leave; | |
2550 | } | |
2551 | ||
6d6b77f1 | 2552 | clear_nlink(inode); |
97b8f4a9 MF |
2553 | /* do the real work now. */ |
2554 | status = __ocfs2_mknod_locked(dir, inode, | |
2555 | 0, &new_di_bh, parent_di_bh, handle, | |
2556 | inode_ac, di_blkno, suballoc_loc, | |
2557 | suballoc_bit); | |
bc13d347 TM |
2558 | if (status < 0) { |
2559 | mlog_errno(status); | |
2560 | goto leave; | |
2561 | } | |
2562 | ||
2563 | di = (struct ocfs2_dinode *)new_di_bh->b_data; | |
3939fda4 | 2564 | status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name, |
06ee5c75 | 2565 | &orphan_insert, orphan_dir, false); |
bc13d347 TM |
2566 | if (status < 0) { |
2567 | mlog_errno(status); | |
2568 | goto leave; | |
2569 | } | |
2570 | ||
2571 | /* get open lock so that only nodes can't remove it from orphan dir. */ | |
2572 | status = ocfs2_open_lock(inode); | |
2573 | if (status < 0) | |
2574 | mlog_errno(status); | |
2575 | ||
c7d260af | 2576 | insert_inode_hash(inode); |
bc13d347 TM |
2577 | leave: |
2578 | if (status < 0 && did_quota_inode) | |
63936dda | 2579 | dquot_free_inode(inode); |
bc13d347 TM |
2580 | if (handle) |
2581 | ocfs2_commit_trans(osb, handle); | |
2582 | ||
2583 | if (orphan_dir) { | |
2584 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
2585 | ocfs2_inode_unlock(orphan_dir, 1); | |
5955102c | 2586 | inode_unlock(orphan_dir); |
bc13d347 TM |
2587 | iput(orphan_dir); |
2588 | } | |
2589 | ||
bc13d347 TM |
2590 | if ((status < 0) && inode) { |
2591 | clear_nlink(inode); | |
2592 | iput(inode); | |
2593 | } | |
2594 | ||
2595 | if (inode_ac) | |
2596 | ocfs2_free_alloc_context(inode_ac); | |
2597 | ||
2598 | brelse(new_di_bh); | |
2599 | ||
2600 | if (!status) | |
2601 | *new_inode = inode; | |
2602 | ||
2603 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2604 | ||
2605 | ocfs2_inode_unlock(dir, 1); | |
2606 | brelse(parent_di_bh); | |
2607 | return status; | |
2608 | } | |
2609 | ||
06ee5c75 JQ |
2610 | int ocfs2_add_inode_to_orphan(struct ocfs2_super *osb, |
2611 | struct inode *inode) | |
2612 | { | |
2613 | char orphan_name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1]; | |
2614 | struct inode *orphan_dir_inode = NULL; | |
2615 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
2616 | struct buffer_head *di_bh = NULL; | |
2617 | int status = 0; | |
2618 | handle_t *handle = NULL; | |
4813962b | 2619 | struct ocfs2_dinode *di = NULL; |
06ee5c75 JQ |
2620 | |
2621 | status = ocfs2_inode_lock(inode, &di_bh, 1); | |
2622 | if (status < 0) { | |
2623 | mlog_errno(status); | |
2624 | goto bail; | |
2625 | } | |
2626 | ||
4813962b JQ |
2627 | di = (struct ocfs2_dinode *) di_bh->b_data; |
2628 | /* | |
2629 | * Another append dio crashed? | |
512f62ac | 2630 | * If so, manually recover it first. |
4813962b JQ |
2631 | */ |
2632 | if (unlikely(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))) { | |
512f62ac JQ |
2633 | status = ocfs2_truncate_file(inode, di_bh, i_size_read(inode)); |
2634 | if (status < 0) { | |
2635 | if (status != -ENOSPC) | |
2636 | mlog_errno(status); | |
2637 | goto bail_unlock_inode; | |
2638 | } | |
2639 | ||
2640 | status = ocfs2_del_inode_from_orphan(osb, inode, di_bh, 0, 0); | |
2641 | if (status < 0) { | |
2642 | mlog_errno(status); | |
2643 | goto bail_unlock_inode; | |
2644 | } | |
4813962b JQ |
2645 | } |
2646 | ||
06ee5c75 JQ |
2647 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir_inode, |
2648 | OCFS2_I(inode)->ip_blkno, | |
2649 | orphan_name, | |
2650 | &orphan_insert, | |
2651 | true); | |
2652 | if (status < 0) { | |
2653 | mlog_errno(status); | |
2654 | goto bail_unlock_inode; | |
2655 | } | |
2656 | ||
2657 | handle = ocfs2_start_trans(osb, | |
2658 | OCFS2_INODE_ADD_TO_ORPHAN_CREDITS); | |
2659 | if (IS_ERR(handle)) { | |
2660 | status = PTR_ERR(handle); | |
2661 | goto bail_unlock_orphan; | |
2662 | } | |
2663 | ||
2664 | status = ocfs2_orphan_add(osb, handle, inode, di_bh, orphan_name, | |
2665 | &orphan_insert, orphan_dir_inode, true); | |
2666 | if (status) | |
2667 | mlog_errno(status); | |
2668 | ||
2669 | ocfs2_commit_trans(osb, handle); | |
2670 | ||
2671 | bail_unlock_orphan: | |
2672 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2673 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2674 | iput(orphan_dir_inode); |
2675 | ||
2676 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2677 | ||
2678 | bail_unlock_inode: | |
2679 | ocfs2_inode_unlock(inode, 1); | |
2680 | brelse(di_bh); | |
2681 | ||
2682 | bail: | |
2683 | return status; | |
2684 | } | |
2685 | ||
2686 | int ocfs2_del_inode_from_orphan(struct ocfs2_super *osb, | |
cf1776a9 JQ |
2687 | struct inode *inode, struct buffer_head *di_bh, |
2688 | int update_isize, loff_t end) | |
06ee5c75 JQ |
2689 | { |
2690 | struct inode *orphan_dir_inode = NULL; | |
2691 | struct buffer_head *orphan_dir_bh = NULL; | |
cf1776a9 | 2692 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data; |
06ee5c75 JQ |
2693 | handle_t *handle = NULL; |
2694 | int status = 0; | |
2695 | ||
06ee5c75 JQ |
2696 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
2697 | ORPHAN_DIR_SYSTEM_INODE, | |
2698 | le16_to_cpu(di->i_dio_orphaned_slot)); | |
2699 | if (!orphan_dir_inode) { | |
2700 | status = -ENOENT; | |
2701 | mlog_errno(status); | |
cf1776a9 | 2702 | goto bail; |
06ee5c75 JQ |
2703 | } |
2704 | ||
5955102c | 2705 | inode_lock(orphan_dir_inode); |
06ee5c75 JQ |
2706 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2707 | if (status < 0) { | |
5955102c | 2708 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2709 | iput(orphan_dir_inode); |
2710 | mlog_errno(status); | |
cf1776a9 | 2711 | goto bail; |
06ee5c75 JQ |
2712 | } |
2713 | ||
2714 | handle = ocfs2_start_trans(osb, | |
2715 | OCFS2_INODE_DEL_FROM_ORPHAN_CREDITS); | |
2716 | if (IS_ERR(handle)) { | |
2717 | status = PTR_ERR(handle); | |
2718 | goto bail_unlock_orphan; | |
2719 | } | |
2720 | ||
2721 | BUG_ON(!(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))); | |
2722 | ||
2723 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, | |
2724 | inode, orphan_dir_bh, true); | |
2725 | if (status < 0) { | |
2726 | mlog_errno(status); | |
2727 | goto bail_commit; | |
2728 | } | |
2729 | ||
2730 | status = ocfs2_journal_access_di(handle, | |
2731 | INODE_CACHE(inode), | |
2732 | di_bh, | |
2733 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2734 | if (status < 0) { | |
2735 | mlog_errno(status); | |
2736 | goto bail_commit; | |
2737 | } | |
2738 | ||
2739 | di->i_flags &= ~cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2740 | di->i_dio_orphaned_slot = 0; | |
2741 | ||
2742 | if (update_isize) { | |
2743 | status = ocfs2_set_inode_size(handle, inode, di_bh, end); | |
2744 | if (status) | |
2745 | mlog_errno(status); | |
2746 | } else | |
2747 | ocfs2_journal_dirty(handle, di_bh); | |
2748 | ||
2749 | bail_commit: | |
2750 | ocfs2_commit_trans(osb, handle); | |
2751 | ||
2752 | bail_unlock_orphan: | |
2753 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2754 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2755 | brelse(orphan_dir_bh); |
2756 | iput(orphan_dir_inode); | |
2757 | ||
06ee5c75 JQ |
2758 | bail: |
2759 | return status; | |
2760 | } | |
2761 | ||
bc13d347 TM |
2762 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, |
2763 | struct inode *inode, | |
2764 | struct dentry *dentry) | |
2765 | { | |
2766 | int status = 0; | |
2767 | struct buffer_head *parent_di_bh = NULL; | |
2768 | handle_t *handle = NULL; | |
2769 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2770 | struct ocfs2_dinode *dir_di, *di; | |
2771 | struct inode *orphan_dir_inode = NULL; | |
2772 | struct buffer_head *orphan_dir_bh = NULL; | |
2773 | struct buffer_head *di_bh = NULL; | |
2774 | struct ocfs2_dir_lookup_result lookup = { NULL, }; | |
2775 | ||
8990e44a TM |
2776 | trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry, |
2777 | dentry->d_name.len, dentry->d_name.name, | |
2778 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
2779 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
bc13d347 TM |
2780 | |
2781 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2782 | if (status < 0) { | |
2783 | if (status != -ENOENT) | |
2784 | mlog_errno(status); | |
2785 | return status; | |
2786 | } | |
2787 | ||
2788 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; | |
2789 | if (!dir_di->i_links_count) { | |
2790 | /* can't make a file in a deleted directory. */ | |
2791 | status = -ENOENT; | |
2792 | goto leave; | |
2793 | } | |
2794 | ||
2795 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
2796 | dentry->d_name.len); | |
2797 | if (status) | |
2798 | goto leave; | |
2799 | ||
2800 | /* get a spot inside the dir. */ | |
2801 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, | |
2802 | dentry->d_name.name, | |
2803 | dentry->d_name.len, &lookup); | |
2804 | if (status < 0) { | |
2805 | mlog_errno(status); | |
2806 | goto leave; | |
2807 | } | |
2808 | ||
2809 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2810 | ORPHAN_DIR_SYSTEM_INODE, | |
2811 | osb->slot_num); | |
2812 | if (!orphan_dir_inode) { | |
62f8b1f0 | 2813 | status = -ENOENT; |
bc13d347 TM |
2814 | mlog_errno(status); |
2815 | goto leave; | |
2816 | } | |
2817 | ||
5955102c | 2818 | inode_lock(orphan_dir_inode); |
bc13d347 TM |
2819 | |
2820 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2821 | if (status < 0) { | |
2822 | mlog_errno(status); | |
5955102c | 2823 | inode_unlock(orphan_dir_inode); |
bc13d347 TM |
2824 | iput(orphan_dir_inode); |
2825 | goto leave; | |
2826 | } | |
2827 | ||
2828 | status = ocfs2_read_inode_block(inode, &di_bh); | |
2829 | if (status < 0) { | |
2830 | mlog_errno(status); | |
2831 | goto orphan_unlock; | |
2832 | } | |
2833 | ||
2834 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); | |
2835 | if (IS_ERR(handle)) { | |
2836 | status = PTR_ERR(handle); | |
2837 | handle = NULL; | |
2838 | mlog_errno(status); | |
2839 | goto orphan_unlock; | |
2840 | } | |
2841 | ||
2842 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), | |
2843 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2844 | if (status < 0) { | |
2845 | mlog_errno(status); | |
2846 | goto out_commit; | |
2847 | } | |
2848 | ||
2849 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
06ee5c75 | 2850 | orphan_dir_bh, false); |
bc13d347 TM |
2851 | if (status < 0) { |
2852 | mlog_errno(status); | |
2853 | goto out_commit; | |
2854 | } | |
2855 | ||
2856 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
13eb9887 | 2857 | di->i_flags &= ~cpu_to_le32(OCFS2_ORPHANED_FL); |
bc13d347 | 2858 | di->i_orphaned_slot = 0; |
bfe86848 | 2859 | set_nlink(inode, 1); |
10cf1a02 | 2860 | ocfs2_set_links_count(di, inode->i_nlink); |
6fdb702d | 2861 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
bc13d347 TM |
2862 | ocfs2_journal_dirty(handle, di_bh); |
2863 | ||
2864 | status = ocfs2_add_entry(handle, dentry, inode, | |
2865 | OCFS2_I(inode)->ip_blkno, parent_di_bh, | |
2866 | &lookup); | |
2867 | if (status < 0) { | |
2868 | mlog_errno(status); | |
2869 | goto out_commit; | |
2870 | } | |
2871 | ||
2872 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
2873 | OCFS2_I(dir)->ip_blkno); | |
2874 | if (status) { | |
2875 | mlog_errno(status); | |
2876 | goto out_commit; | |
2877 | } | |
2878 | ||
bc13d347 TM |
2879 | d_instantiate(dentry, inode); |
2880 | status = 0; | |
2881 | out_commit: | |
2882 | ocfs2_commit_trans(osb, handle); | |
2883 | orphan_unlock: | |
2884 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2885 | inode_unlock(orphan_dir_inode); |
bc13d347 TM |
2886 | iput(orphan_dir_inode); |
2887 | leave: | |
2888 | ||
2889 | ocfs2_inode_unlock(dir, 1); | |
2890 | ||
2891 | brelse(di_bh); | |
2892 | brelse(parent_di_bh); | |
2893 | brelse(orphan_dir_bh); | |
2894 | ||
2895 | ocfs2_free_dir_lookup_result(&lookup); | |
2896 | ||
c1e8d35e TM |
2897 | if (status) |
2898 | mlog_errno(status); | |
bc13d347 TM |
2899 | |
2900 | return status; | |
2901 | } | |
2902 | ||
92e1d5be | 2903 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2904 | .create = ocfs2_create, |
2905 | .lookup = ocfs2_lookup, | |
2906 | .link = ocfs2_link, | |
2907 | .unlink = ocfs2_unlink, | |
2908 | .rmdir = ocfs2_unlink, | |
2909 | .symlink = ocfs2_symlink, | |
2910 | .mkdir = ocfs2_mkdir, | |
2911 | .mknod = ocfs2_mknod, | |
2912 | .rename = ocfs2_rename, | |
2913 | .setattr = ocfs2_setattr, | |
2914 | .getattr = ocfs2_getattr, | |
d38eb8db | 2915 | .permission = ocfs2_permission, |
cf1d6c76 TY |
2916 | .setxattr = generic_setxattr, |
2917 | .getxattr = generic_getxattr, | |
2918 | .listxattr = ocfs2_listxattr, | |
2919 | .removexattr = generic_removexattr, | |
55f4946e | 2920 | .fiemap = ocfs2_fiemap, |
4e34e719 | 2921 | .get_acl = ocfs2_iop_get_acl, |
702e5bc6 | 2922 | .set_acl = ocfs2_iop_set_acl, |
ccd979bd | 2923 | }; |