Commit | Line | Data |
---|---|---|
ccd979bd MF |
1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * namei.c | |
5 | * | |
6 | * Create and rename file, directory, symlinks | |
7 | * | |
8 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
9 | * | |
10 | * Portions of this code from linux/fs/ext3/dir.c | |
11 | * | |
12 | * Copyright (C) 1992, 1993, 1994, 1995 | |
13 | * Remy Card (card@masi.ibp.fr) | |
14 | * Laboratoire MASI - Institut Blaise pascal | |
15 | * Universite Pierre et Marie Curie (Paris VI) | |
16 | * | |
17 | * from | |
18 | * | |
19 | * linux/fs/minix/dir.c | |
20 | * | |
21 | * Copyright (C) 1991, 1992 Linux Torvalds | |
22 | * | |
23 | * This program is free software; you can redistribute it and/or | |
24 | * modify it under the terms of the GNU General Public | |
25 | * License as published by the Free Software Foundation; either | |
26 | * version 2 of the License, or (at your option) any later version. | |
27 | * | |
28 | * This program is distributed in the hope that it will be useful, | |
29 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
30 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
31 | * General Public License for more details. | |
32 | * | |
33 | * You should have received a copy of the GNU General Public | |
34 | * License along with this program; if not, write to the | |
35 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
36 | * Boston, MA 021110-1307, USA. | |
37 | */ | |
38 | ||
39 | #include <linux/fs.h> | |
40 | #include <linux/types.h> | |
41 | #include <linux/slab.h> | |
42 | #include <linux/highmem.h> | |
a90714c1 | 43 | #include <linux/quotaops.h> |
ccd979bd | 44 | |
ccd979bd MF |
45 | #include <cluster/masklog.h> |
46 | ||
47 | #include "ocfs2.h" | |
48 | ||
49 | #include "alloc.h" | |
50 | #include "dcache.h" | |
51 | #include "dir.h" | |
52 | #include "dlmglue.h" | |
53 | #include "extent_map.h" | |
54 | #include "file.h" | |
55 | #include "inode.h" | |
56 | #include "journal.h" | |
57 | #include "namei.h" | |
58 | #include "suballoc.h" | |
aa958874 | 59 | #include "super.h" |
ccd979bd MF |
60 | #include "symlink.h" |
61 | #include "sysfile.h" | |
62 | #include "uptodate.h" | |
cf1d6c76 | 63 | #include "xattr.h" |
89c38bd0 | 64 | #include "acl.h" |
8990e44a | 65 | #include "ocfs2_trace.h" |
ccd979bd MF |
66 | |
67 | #include "buffer_head_io.h" | |
68 | ||
ccd979bd MF |
69 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
70 | struct inode *dir, | |
f5d36202 | 71 | struct inode *inode, |
ccd979bd MF |
72 | dev_t dev, |
73 | struct buffer_head **new_fe_bh, | |
74 | struct buffer_head *parent_fe_bh, | |
1fabe148 | 75 | handle_t *handle, |
ccd979bd MF |
76 | struct ocfs2_alloc_context *inode_ac); |
77 | ||
ccd979bd | 78 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, |
5098c27b | 79 | struct inode **ret_orphan_dir, |
19bd341f | 80 | u64 blkno, |
ccd979bd | 81 | char *name, |
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; | |
702e5bc6 | 262 | struct posix_acl *default_acl = NULL, *acl = NULL; |
595297a8 | 263 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 264 | |
8990e44a TM |
265 | trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
266 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
267 | (unsigned long)dev, mode); | |
ccd979bd | 268 | |
9c89fe0a JK |
269 | status = dquot_initialize(dir); |
270 | if (status) { | |
271 | mlog_errno(status); | |
272 | return status; | |
273 | } | |
907f4554 | 274 | |
ccd979bd MF |
275 | /* get our super block */ |
276 | osb = OCFS2_SB(dir->i_sb); | |
277 | ||
e63aecb6 | 278 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
e3a82138 MF |
279 | if (status < 0) { |
280 | if (status != -ENOENT) | |
281 | mlog_errno(status); | |
282 | return status; | |
283 | } | |
284 | ||
198a1ca3 | 285 | if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) { |
a663e305 MF |
286 | status = -EMLINK; |
287 | goto leave; | |
288 | } | |
289 | ||
ccd979bd | 290 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
198a1ca3 | 291 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
292 | /* can't make a file in a deleted directory. */ |
293 | status = -ENOENT; | |
294 | goto leave; | |
295 | } | |
296 | ||
297 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
298 | dentry->d_name.len); | |
299 | if (status) | |
300 | goto leave; | |
301 | ||
302 | /* get a spot inside the dir. */ | |
303 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
304 | dentry->d_name.name, | |
4a12ca3a | 305 | dentry->d_name.len, &lookup); |
ccd979bd MF |
306 | if (status < 0) { |
307 | mlog_errno(status); | |
308 | goto leave; | |
309 | } | |
310 | ||
311 | /* reserve an inode spot */ | |
da5cbf2f | 312 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
313 | if (status < 0) { |
314 | if (status != -ENOSPC) | |
315 | mlog_errno(status); | |
316 | goto leave; | |
317 | } | |
318 | ||
f5d36202 | 319 | inode = ocfs2_get_init_inode(dir, mode); |
9c89fe0a JK |
320 | if (IS_ERR(inode)) { |
321 | status = PTR_ERR(inode); | |
322 | inode = NULL; | |
f5d36202 TY |
323 | mlog_errno(status); |
324 | goto leave; | |
325 | } | |
326 | ||
534eaddd | 327 | /* get security xattr */ |
2a7dba39 | 328 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
329 | if (status) { |
330 | if (status == -EOPNOTSUPP) | |
331 | si.enable = 0; | |
332 | else { | |
333 | mlog_errno(status); | |
334 | goto leave; | |
335 | } | |
336 | } | |
337 | ||
89c38bd0 TY |
338 | /* calculate meta data/clusters for setting security and acl xattr */ |
339 | status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode, | |
9b7895ef MF |
340 | &si, &want_clusters, |
341 | &xattr_credits, &want_meta); | |
89c38bd0 TY |
342 | if (status < 0) { |
343 | mlog_errno(status); | |
344 | goto leave; | |
ccd979bd MF |
345 | } |
346 | ||
534eaddd | 347 | /* Reserve a cluster if creating an extent based directory. */ |
9b7895ef | 348 | if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) { |
534eaddd TY |
349 | want_clusters += 1; |
350 | ||
9b7895ef | 351 | /* Dir indexing requires extra space as well */ |
4ed8a6bb | 352 | if (ocfs2_supports_indexed_dirs(osb)) |
9b7895ef | 353 | want_meta++; |
9b7895ef MF |
354 | } |
355 | ||
356 | status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac); | |
357 | if (status < 0) { | |
358 | if (status != -ENOSPC) | |
359 | mlog_errno(status); | |
360 | goto leave; | |
361 | } | |
362 | ||
534eaddd TY |
363 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); |
364 | if (status < 0) { | |
365 | if (status != -ENOSPC) | |
366 | mlog_errno(status); | |
367 | goto leave; | |
368 | } | |
369 | ||
854ee2e9 | 370 | status = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl); |
702e5bc6 CH |
371 | if (status) { |
372 | mlog_errno(status); | |
373 | goto leave; | |
374 | } | |
375 | ||
9b7895ef MF |
376 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, |
377 | S_ISDIR(mode), | |
378 | xattr_credits)); | |
ccd979bd MF |
379 | if (IS_ERR(handle)) { |
380 | status = PTR_ERR(handle); | |
381 | handle = NULL; | |
382 | mlog_errno(status); | |
383 | goto leave; | |
384 | } | |
385 | ||
547ba7c8 JB |
386 | /* Starting to change things, restart is no longer possible. */ |
387 | ocfs2_block_signals(&oldset); | |
388 | did_block_signals = 1; | |
389 | ||
63936dda CH |
390 | status = dquot_alloc_inode(inode); |
391 | if (status) | |
a90714c1 | 392 | goto leave; |
a90714c1 JK |
393 | did_quota_inode = 1; |
394 | ||
ccd979bd | 395 | /* do the real work now. */ |
19bd341f | 396 | status = ocfs2_mknod_locked(osb, dir, inode, dev, |
ccd979bd | 397 | &new_fe_bh, parent_fe_bh, handle, |
f5d36202 | 398 | inode_ac); |
ccd979bd MF |
399 | if (status < 0) { |
400 | mlog_errno(status); | |
401 | goto leave; | |
402 | } | |
403 | ||
404 | if (S_ISDIR(mode)) { | |
405 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, | |
9b7895ef | 406 | new_fe_bh, data_ac, meta_ac); |
ccd979bd MF |
407 | if (status < 0) { |
408 | mlog_errno(status); | |
409 | goto leave; | |
410 | } | |
411 | ||
0cf2f763 JB |
412 | status = ocfs2_journal_access_di(handle, INODE_CACHE(dir), |
413 | parent_fe_bh, | |
13723d00 | 414 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
415 | if (status < 0) { |
416 | mlog_errno(status); | |
417 | goto leave; | |
418 | } | |
198a1ca3 | 419 | ocfs2_add_links_count(dirfe, 1); |
ec20cec7 | 420 | ocfs2_journal_dirty(handle, parent_fe_bh); |
d8c76e6f | 421 | inc_nlink(dir); |
ccd979bd MF |
422 | } |
423 | ||
702e5bc6 CH |
424 | if (default_acl) { |
425 | status = ocfs2_set_acl(handle, inode, new_fe_bh, | |
426 | ACL_TYPE_DEFAULT, default_acl, | |
427 | meta_ac, data_ac); | |
428 | } | |
429 | if (!status && acl) { | |
430 | status = ocfs2_set_acl(handle, inode, new_fe_bh, | |
431 | ACL_TYPE_ACCESS, acl, | |
432 | meta_ac, data_ac); | |
433 | } | |
434 | ||
89c38bd0 TY |
435 | if (status < 0) { |
436 | mlog_errno(status); | |
437 | goto leave; | |
438 | } | |
439 | ||
534eaddd TY |
440 | if (si.enable) { |
441 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
9b7895ef | 442 | meta_ac, data_ac); |
534eaddd TY |
443 | if (status < 0) { |
444 | mlog_errno(status); | |
445 | goto leave; | |
446 | } | |
447 | } | |
448 | ||
a9743fcd MF |
449 | /* |
450 | * Do this before adding the entry to the directory. We add | |
451 | * also set d_op after success so that ->d_iput() will cleanup | |
452 | * the dentry lock even if ocfs2_add_entry() fails below. | |
453 | */ | |
454 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
455 | OCFS2_I(dir)->ip_blkno); | |
456 | if (status) { | |
ccd979bd MF |
457 | mlog_errno(status); |
458 | goto leave; | |
459 | } | |
460 | ||
595297a8 | 461 | dl = dentry->d_fsdata; |
462 | ||
a9743fcd MF |
463 | status = ocfs2_add_entry(handle, dentry, inode, |
464 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
465 | &lookup); | |
466 | if (status < 0) { | |
379dfe9d MF |
467 | mlog_errno(status); |
468 | goto leave; | |
469 | } | |
470 | ||
ccd979bd | 471 | insert_inode_hash(inode); |
ccd979bd MF |
472 | d_instantiate(dentry, inode); |
473 | status = 0; | |
474 | leave: | |
702e5bc6 CH |
475 | if (default_acl) |
476 | posix_acl_release(default_acl); | |
477 | if (acl) | |
478 | posix_acl_release(acl); | |
a90714c1 | 479 | if (status < 0 && did_quota_inode) |
63936dda | 480 | dquot_free_inode(inode); |
ccd979bd | 481 | if (handle) |
02dc1af4 | 482 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 483 | |
e63aecb6 | 484 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
485 | if (did_block_signals) |
486 | ocfs2_unblock_signals(&oldset); | |
e3a82138 | 487 | |
a81cb88b | 488 | brelse(new_fe_bh); |
a81cb88b | 489 | brelse(parent_fe_bh); |
534eaddd | 490 | kfree(si.value); |
ccd979bd | 491 | |
4a12ca3a MF |
492 | ocfs2_free_dir_lookup_result(&lookup); |
493 | ||
ccd979bd MF |
494 | if (inode_ac) |
495 | ocfs2_free_alloc_context(inode_ac); | |
496 | ||
497 | if (data_ac) | |
498 | ocfs2_free_alloc_context(data_ac); | |
499 | ||
9b7895ef MF |
500 | if (meta_ac) |
501 | ocfs2_free_alloc_context(meta_ac); | |
534eaddd | 502 | |
062d3403 LD |
503 | /* |
504 | * We should call iput after the i_mutex of the bitmap been | |
505 | * unlocked in ocfs2_free_alloc_context, or the | |
506 | * ocfs2_delete_inode will mutex_lock again. | |
507 | */ | |
508 | if ((status < 0) && inode) { | |
595297a8 | 509 | if (dl) |
510 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
511 | ||
062d3403 LD |
512 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
513 | clear_nlink(inode); | |
514 | iput(inode); | |
515 | } | |
516 | ||
c1e8d35e TM |
517 | if (status) |
518 | mlog_errno(status); | |
ccd979bd MF |
519 | |
520 | return status; | |
521 | } | |
522 | ||
021960ca MF |
523 | static int __ocfs2_mknod_locked(struct inode *dir, |
524 | struct inode *inode, | |
525 | dev_t dev, | |
526 | struct buffer_head **new_fe_bh, | |
527 | struct buffer_head *parent_fe_bh, | |
528 | handle_t *handle, | |
529 | struct ocfs2_alloc_context *inode_ac, | |
530 | u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit) | |
ccd979bd MF |
531 | { |
532 | int status = 0; | |
021960ca | 533 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
ccd979bd MF |
534 | struct ocfs2_dinode *fe = NULL; |
535 | struct ocfs2_extent_list *fel; | |
9b7895ef | 536 | u16 feat; |
2931cdcb | 537 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
ccd979bd | 538 | |
ccd979bd | 539 | *new_fe_bh = NULL; |
ccd979bd | 540 | |
ccd979bd MF |
541 | /* populate as many fields early on as possible - many of |
542 | * these are used by the support functions here and in | |
543 | * callers. */ | |
544 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
545 | OCFS2_I(inode)->ip_blkno = fe_blkno; | |
ccd979bd MF |
546 | spin_lock(&osb->osb_lock); |
547 | inode->i_generation = osb->s_next_generation++; | |
548 | spin_unlock(&osb->osb_lock); | |
549 | ||
550 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
551 | if (!*new_fe_bh) { | |
7391a294 | 552 | status = -ENOMEM; |
ccd979bd MF |
553 | mlog_errno(status); |
554 | goto leave; | |
555 | } | |
8cb471e8 | 556 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
ccd979bd | 557 | |
0cf2f763 JB |
558 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
559 | *new_fe_bh, | |
13723d00 | 560 | OCFS2_JOURNAL_ACCESS_CREATE); |
ccd979bd MF |
561 | if (status < 0) { |
562 | mlog_errno(status); | |
563 | goto leave; | |
564 | } | |
565 | ||
566 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
567 | memset(fe, 0, osb->sb->s_blocksize); | |
568 | ||
569 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
570 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
571 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
2b6cb576 | 572 | fe->i_suballoc_loc = cpu_to_le64(suballoc_loc); |
ccd979bd | 573 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); |
4d0ddb2c | 574 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
2c034176 EB |
575 | fe->i_uid = cpu_to_le32(i_uid_read(inode)); |
576 | fe->i_gid = cpu_to_le32(i_gid_read(inode)); | |
f5d36202 TY |
577 | fe->i_mode = cpu_to_le16(inode->i_mode); |
578 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 579 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
198a1ca3 MF |
580 | |
581 | ocfs2_set_links_count(fe, inode->i_nlink); | |
ccd979bd MF |
582 | |
583 | fe->i_last_eb_blk = 0; | |
584 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
13eb9887 | 585 | fe->i_flags |= cpu_to_le32(OCFS2_VALID_FL); |
ccd979bd MF |
586 | fe->i_atime = fe->i_ctime = fe->i_mtime = |
587 | cpu_to_le64(CURRENT_TIME.tv_sec); | |
588 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = | |
589 | cpu_to_le32(CURRENT_TIME.tv_nsec); | |
590 | fe->i_dtime = 0; | |
591 | ||
5b6a3a2b | 592 | /* |
9b7895ef MF |
593 | * If supported, directories start with inline data. If inline |
594 | * isn't supported, but indexing is, we start them as indexed. | |
5b6a3a2b | 595 | */ |
9b7895ef | 596 | feat = le16_to_cpu(fe->i_dyn_features); |
f5d36202 | 597 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
598 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
599 | ||
d9ae49d6 TY |
600 | fe->id2.i_data.id_count = cpu_to_le16( |
601 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); | |
5b6a3a2b MF |
602 | } else { |
603 | fel = &fe->id2.i_list; | |
604 | fel->l_tree_depth = 0; | |
605 | fel->l_next_free_rec = 0; | |
606 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
607 | } | |
ccd979bd | 608 | |
ec20cec7 | 609 | ocfs2_journal_dirty(handle, *new_fe_bh); |
ccd979bd | 610 | |
b657c95c | 611 | ocfs2_populate_inode(inode, fe, 1); |
0cf2f763 | 612 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
c271c5c2 SM |
613 | if (!ocfs2_mount_local(osb)) { |
614 | status = ocfs2_create_new_inode_locks(inode); | |
615 | if (status < 0) | |
616 | mlog_errno(status); | |
617 | } | |
ccd979bd | 618 | |
2931cdcb DW |
619 | oi->i_sync_tid = handle->h_transaction->t_tid; |
620 | oi->i_datasync_tid = handle->h_transaction->t_tid; | |
621 | ||
ccd979bd MF |
622 | leave: |
623 | if (status < 0) { | |
624 | if (*new_fe_bh) { | |
625 | brelse(*new_fe_bh); | |
626 | *new_fe_bh = NULL; | |
627 | } | |
ccd979bd MF |
628 | } |
629 | ||
c1e8d35e TM |
630 | if (status) |
631 | mlog_errno(status); | |
ccd979bd MF |
632 | return status; |
633 | } | |
634 | ||
021960ca MF |
635 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
636 | struct inode *dir, | |
637 | struct inode *inode, | |
638 | dev_t dev, | |
639 | struct buffer_head **new_fe_bh, | |
640 | struct buffer_head *parent_fe_bh, | |
641 | handle_t *handle, | |
642 | struct ocfs2_alloc_context *inode_ac) | |
643 | { | |
644 | int status = 0; | |
645 | u64 suballoc_loc, fe_blkno = 0; | |
646 | u16 suballoc_bit; | |
647 | ||
648 | *new_fe_bh = NULL; | |
649 | ||
650 | status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh, | |
651 | inode_ac, &suballoc_loc, | |
652 | &suballoc_bit, &fe_blkno); | |
653 | if (status < 0) { | |
654 | mlog_errno(status); | |
655 | return status; | |
656 | } | |
657 | ||
b1529a41 | 658 | status = __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh, |
021960ca MF |
659 | parent_fe_bh, handle, inode_ac, |
660 | fe_blkno, suballoc_loc, suballoc_bit); | |
b1529a41 | 661 | if (status < 0) { |
662 | u64 bg_blkno = ocfs2_which_suballoc_group(fe_blkno, suballoc_bit); | |
663 | int tmp = ocfs2_free_suballoc_bits(handle, inode_ac->ac_inode, | |
664 | inode_ac->ac_bh, suballoc_bit, bg_blkno, 1); | |
665 | if (tmp) | |
666 | mlog_errno(tmp); | |
667 | } | |
668 | ||
669 | return status; | |
021960ca MF |
670 | } |
671 | ||
ccd979bd MF |
672 | static int ocfs2_mkdir(struct inode *dir, |
673 | struct dentry *dentry, | |
18bb1db3 | 674 | umode_t mode) |
ccd979bd MF |
675 | { |
676 | int ret; | |
677 | ||
8990e44a TM |
678 | trace_ocfs2_mkdir(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
679 | OCFS2_I(dir)->ip_blkno, mode); | |
ccd979bd | 680 | ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0); |
c1e8d35e TM |
681 | if (ret) |
682 | mlog_errno(ret); | |
ccd979bd MF |
683 | |
684 | return ret; | |
685 | } | |
686 | ||
687 | static int ocfs2_create(struct inode *dir, | |
688 | struct dentry *dentry, | |
4acdaf27 | 689 | umode_t mode, |
ebfc3b49 | 690 | bool excl) |
ccd979bd MF |
691 | { |
692 | int ret; | |
693 | ||
8990e44a TM |
694 | trace_ocfs2_create(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
695 | (unsigned long long)OCFS2_I(dir)->ip_blkno, mode); | |
ccd979bd | 696 | ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0); |
c1e8d35e TM |
697 | if (ret) |
698 | mlog_errno(ret); | |
ccd979bd MF |
699 | |
700 | return ret; | |
701 | } | |
702 | ||
703 | static int ocfs2_link(struct dentry *old_dentry, | |
704 | struct inode *dir, | |
705 | struct dentry *dentry) | |
706 | { | |
1fabe148 | 707 | handle_t *handle; |
2b0143b5 DH |
708 | struct inode *inode = d_inode(old_dentry); |
709 | struct inode *old_dir = d_inode(old_dentry->d_parent); | |
ccd979bd MF |
710 | int err; |
711 | struct buffer_head *fe_bh = NULL; | |
53dc20b9 | 712 | struct buffer_head *old_dir_bh = NULL; |
ccd979bd | 713 | struct buffer_head *parent_fe_bh = NULL; |
ccd979bd MF |
714 | struct ocfs2_dinode *fe = NULL; |
715 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
4a12ca3a | 716 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 | 717 | sigset_t oldset; |
0e048316 | 718 | u64 old_de_ino; |
ccd979bd | 719 | |
8990e44a TM |
720 | trace_ocfs2_link((unsigned long long)OCFS2_I(inode)->ip_blkno, |
721 | old_dentry->d_name.len, old_dentry->d_name.name, | |
722 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 723 | |
123a9643 MF |
724 | if (S_ISDIR(inode->i_mode)) |
725 | return -EPERM; | |
ccd979bd | 726 | |
9c89fe0a JK |
727 | err = dquot_initialize(dir); |
728 | if (err) { | |
729 | mlog_errno(err); | |
730 | return err; | |
731 | } | |
907f4554 | 732 | |
53dc20b9 X |
733 | err = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
734 | &parent_fe_bh, dir, 0); | |
ccd979bd MF |
735 | if (err < 0) { |
736 | if (err != -ENOENT) | |
737 | mlog_errno(err); | |
123a9643 | 738 | return err; |
ccd979bd MF |
739 | } |
740 | ||
53dc20b9 X |
741 | /* make sure both dirs have bhs |
742 | * get an extra ref on old_dir_bh if old==new */ | |
743 | if (!parent_fe_bh) { | |
744 | if (old_dir_bh) { | |
745 | parent_fe_bh = old_dir_bh; | |
746 | get_bh(parent_fe_bh); | |
747 | } else { | |
748 | mlog(ML_ERROR, "%s: no old_dir_bh!\n", osb->uuid_str); | |
749 | err = -EIO; | |
750 | goto out; | |
751 | } | |
752 | } | |
753 | ||
0f62de2c TY |
754 | if (!dir->i_nlink) { |
755 | err = -ENOENT; | |
123a9643 | 756 | goto out; |
0f62de2c TY |
757 | } |
758 | ||
53dc20b9 | 759 | err = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
0e048316 X |
760 | old_dentry->d_name.len, &old_de_ino); |
761 | if (err) { | |
762 | err = -ENOENT; | |
763 | goto out; | |
764 | } | |
765 | ||
766 | /* | |
767 | * Check whether another node removed the source inode while we | |
768 | * were in the vfs. | |
769 | */ | |
770 | if (old_de_ino != OCFS2_I(inode)->ip_blkno) { | |
771 | err = -ENOENT; | |
772 | goto out; | |
773 | } | |
774 | ||
ccd979bd MF |
775 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
776 | dentry->d_name.len); | |
777 | if (err) | |
123a9643 | 778 | goto out; |
ccd979bd MF |
779 | |
780 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
781 | dentry->d_name.name, | |
4a12ca3a | 782 | dentry->d_name.len, &lookup); |
ccd979bd MF |
783 | if (err < 0) { |
784 | mlog_errno(err); | |
123a9643 | 785 | goto out; |
ccd979bd MF |
786 | } |
787 | ||
e63aecb6 | 788 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
789 | if (err < 0) { |
790 | if (err != -ENOENT) | |
791 | mlog_errno(err); | |
123a9643 | 792 | goto out; |
ccd979bd MF |
793 | } |
794 | ||
795 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
198a1ca3 | 796 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
ccd979bd | 797 | err = -EMLINK; |
123a9643 | 798 | goto out_unlock_inode; |
ccd979bd MF |
799 | } |
800 | ||
a90714c1 | 801 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
802 | if (IS_ERR(handle)) { |
803 | err = PTR_ERR(handle); | |
804 | handle = NULL; | |
805 | mlog_errno(err); | |
123a9643 | 806 | goto out_unlock_inode; |
ccd979bd MF |
807 | } |
808 | ||
547ba7c8 JB |
809 | /* Starting to change things, restart is no longer possible. */ |
810 | ocfs2_block_signals(&oldset); | |
811 | ||
0cf2f763 | 812 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 813 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
814 | if (err < 0) { |
815 | mlog_errno(err); | |
123a9643 | 816 | goto out_commit; |
ccd979bd MF |
817 | } |
818 | ||
d8c76e6f | 819 | inc_nlink(inode); |
ccd979bd | 820 | inode->i_ctime = CURRENT_TIME; |
198a1ca3 | 821 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
822 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
823 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
ec20cec7 | 824 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd MF |
825 | |
826 | err = ocfs2_add_entry(handle, dentry, inode, | |
827 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 828 | parent_fe_bh, &lookup); |
ccd979bd | 829 | if (err) { |
198a1ca3 | 830 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 831 | drop_nlink(inode); |
ccd979bd | 832 | mlog_errno(err); |
123a9643 | 833 | goto out_commit; |
ccd979bd MF |
834 | } |
835 | ||
0027dd5b | 836 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
837 | if (err) { |
838 | mlog_errno(err); | |
123a9643 | 839 | goto out_commit; |
379dfe9d MF |
840 | } |
841 | ||
7de9c6ee | 842 | ihold(inode); |
ccd979bd | 843 | d_instantiate(dentry, inode); |
123a9643 MF |
844 | |
845 | out_commit: | |
02dc1af4 | 846 | ocfs2_commit_trans(osb, handle); |
547ba7c8 | 847 | ocfs2_unblock_signals(&oldset); |
123a9643 | 848 | out_unlock_inode: |
e63aecb6 | 849 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
850 | |
851 | out: | |
53dc20b9 | 852 | ocfs2_double_unlock(old_dir, dir); |
123a9643 | 853 | |
a81cb88b MF |
854 | brelse(fe_bh); |
855 | brelse(parent_fe_bh); | |
53dc20b9 | 856 | brelse(old_dir_bh); |
ccd979bd | 857 | |
4a12ca3a MF |
858 | ocfs2_free_dir_lookup_result(&lookup); |
859 | ||
c1e8d35e TM |
860 | if (err) |
861 | mlog_errno(err); | |
ccd979bd MF |
862 | |
863 | return err; | |
864 | } | |
865 | ||
379dfe9d MF |
866 | /* |
867 | * Takes and drops an exclusive lock on the given dentry. This will | |
868 | * force other nodes to drop it. | |
869 | */ | |
870 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
871 | { | |
872 | int ret; | |
873 | ||
874 | ret = ocfs2_dentry_lock(dentry, 1); | |
875 | if (ret) | |
876 | mlog_errno(ret); | |
877 | else | |
878 | ocfs2_dentry_unlock(dentry, 1); | |
879 | ||
880 | return ret; | |
881 | } | |
882 | ||
b5a8bb71 | 883 | static inline int ocfs2_inode_is_unlinkable(struct inode *inode) |
17ff7856 MF |
884 | { |
885 | if (S_ISDIR(inode->i_mode)) { | |
886 | if (inode->i_nlink == 2) | |
887 | return 1; | |
888 | return 0; | |
889 | } | |
890 | ||
891 | if (inode->i_nlink == 1) | |
892 | return 1; | |
893 | return 0; | |
894 | } | |
895 | ||
ccd979bd MF |
896 | static int ocfs2_unlink(struct inode *dir, |
897 | struct dentry *dentry) | |
898 | { | |
899 | int status; | |
30a4f5e8 | 900 | int child_locked = 0; |
b5a8bb71 | 901 | bool is_unlinkable = false; |
2b0143b5 | 902 | struct inode *inode = d_inode(dentry); |
5098c27b | 903 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
904 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
905 | u64 blkno; | |
906 | struct ocfs2_dinode *fe = NULL; | |
907 | struct buffer_head *fe_bh = NULL; | |
908 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 909 | handle_t *handle = NULL; |
ccd979bd | 910 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
911 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
912 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd | 913 | |
8990e44a TM |
914 | trace_ocfs2_unlink(dir, dentry, dentry->d_name.len, |
915 | dentry->d_name.name, | |
916 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
917 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 918 | |
9c89fe0a JK |
919 | status = dquot_initialize(dir); |
920 | if (status) { | |
921 | mlog_errno(status); | |
922 | return status; | |
923 | } | |
907f4554 | 924 | |
2b0143b5 | 925 | BUG_ON(d_inode(dentry->d_parent) != dir); |
ccd979bd | 926 | |
8990e44a | 927 | if (inode == osb->root_inode) |
30a4f5e8 | 928 | return -EPERM; |
ccd979bd | 929 | |
cb25797d JK |
930 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
931 | OI_LS_PARENT); | |
ccd979bd MF |
932 | if (status < 0) { |
933 | if (status != -ENOENT) | |
934 | mlog_errno(status); | |
30a4f5e8 | 935 | return status; |
ccd979bd MF |
936 | } |
937 | ||
938 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
939 | dentry->d_name.len, &blkno, dir, |
940 | &lookup); | |
ccd979bd MF |
941 | if (status < 0) { |
942 | if (status != -ENOENT) | |
943 | mlog_errno(status); | |
944 | goto leave; | |
945 | } | |
946 | ||
947 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
948 | status = -ENOENT; | |
949 | ||
8990e44a TM |
950 | trace_ocfs2_unlink_noent( |
951 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
952 | (unsigned long long)blkno, | |
953 | OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
954 | goto leave; |
955 | } | |
956 | ||
e63aecb6 | 957 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
958 | if (status < 0) { |
959 | if (status != -ENOENT) | |
960 | mlog_errno(status); | |
961 | goto leave; | |
962 | } | |
30a4f5e8 | 963 | child_locked = 1; |
ccd979bd MF |
964 | |
965 | if (S_ISDIR(inode->i_mode)) { | |
b80b549c | 966 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
ccd979bd MF |
967 | status = -ENOTEMPTY; |
968 | goto leave; | |
969 | } | |
970 | } | |
971 | ||
379dfe9d | 972 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 973 | if (status < 0) { |
34d024f8 | 974 | /* This remote delete should succeed under all normal |
ccd979bd MF |
975 | * circumstances. */ |
976 | mlog_errno(status); | |
977 | goto leave; | |
978 | } | |
979 | ||
b5a8bb71 | 980 | if (ocfs2_inode_is_unlinkable(inode)) { |
19bd341f TM |
981 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
982 | OCFS2_I(inode)->ip_blkno, | |
06ee5c75 JQ |
983 | orphan_name, &orphan_insert, |
984 | false); | |
ccd979bd MF |
985 | if (status < 0) { |
986 | mlog_errno(status); | |
987 | goto leave; | |
988 | } | |
b5a8bb71 | 989 | is_unlinkable = true; |
ccd979bd MF |
990 | } |
991 | ||
a90714c1 | 992 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
993 | if (IS_ERR(handle)) { |
994 | status = PTR_ERR(handle); | |
995 | handle = NULL; | |
996 | mlog_errno(status); | |
997 | goto leave; | |
998 | } | |
999 | ||
0cf2f763 | 1000 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 1001 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1002 | if (status < 0) { |
1003 | mlog_errno(status); | |
1004 | goto leave; | |
1005 | } | |
1006 | ||
1007 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
1008 | ||
ccd979bd | 1009 | /* delete the name from the parent dir */ |
4a12ca3a | 1010 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
1011 | if (status < 0) { |
1012 | mlog_errno(status); | |
1013 | goto leave; | |
1014 | } | |
1015 | ||
17ff7856 MF |
1016 | if (S_ISDIR(inode->i_mode)) |
1017 | drop_nlink(inode); | |
1018 | drop_nlink(inode); | |
198a1ca3 | 1019 | ocfs2_set_links_count(fe, inode->i_nlink); |
ec20cec7 | 1020 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd | 1021 | |
592282cf MF |
1022 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; |
1023 | if (S_ISDIR(inode->i_mode)) | |
17ff7856 | 1024 | drop_nlink(dir); |
592282cf MF |
1025 | |
1026 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
1027 | if (status < 0) { | |
1028 | mlog_errno(status); | |
1029 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 1030 | inc_nlink(dir); |
b5a8bb71 YL |
1031 | goto leave; |
1032 | } | |
1033 | ||
1034 | if (is_unlinkable) { | |
1035 | status = ocfs2_orphan_add(osb, handle, inode, fe_bh, | |
06ee5c75 | 1036 | orphan_name, &orphan_insert, orphan_dir, false); |
b5a8bb71 YL |
1037 | if (status < 0) |
1038 | mlog_errno(status); | |
ccd979bd MF |
1039 | } |
1040 | ||
1041 | leave: | |
ccd979bd | 1042 | if (handle) |
02dc1af4 | 1043 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1044 | |
5098c27b MF |
1045 | if (orphan_dir) { |
1046 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1047 | ocfs2_inode_unlock(orphan_dir, 1); |
5955102c | 1048 | inode_unlock(orphan_dir); |
5098c27b MF |
1049 | iput(orphan_dir); |
1050 | } | |
1051 | ||
3cb2ec43 JQ |
1052 | if (child_locked) |
1053 | ocfs2_inode_unlock(inode, 1); | |
1054 | ||
1055 | ocfs2_inode_unlock(dir, 1); | |
1056 | ||
a81cb88b | 1057 | brelse(fe_bh); |
a81cb88b | 1058 | brelse(parent_node_bh); |
4a12ca3a MF |
1059 | |
1060 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1061 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd | 1062 | |
f5b25855 | 1063 | if (status && (status != -ENOTEMPTY) && (status != -ENOENT)) |
c1e8d35e | 1064 | mlog_errno(status); |
ccd979bd MF |
1065 | |
1066 | return status; | |
1067 | } | |
1068 | ||
f7a14f32 YJ |
1069 | static int ocfs2_check_if_ancestor(struct ocfs2_super *osb, |
1070 | u64 src_inode_no, u64 dest_inode_no) | |
1071 | { | |
1072 | int ret = 0, i = 0; | |
1073 | u64 parent_inode_no = 0; | |
1074 | u64 child_inode_no = src_inode_no; | |
1075 | struct inode *child_inode; | |
1076 | ||
1077 | #define MAX_LOOKUP_TIMES 32 | |
1078 | while (1) { | |
1079 | child_inode = ocfs2_iget(osb, child_inode_no, 0, 0); | |
1080 | if (IS_ERR(child_inode)) { | |
1081 | ret = PTR_ERR(child_inode); | |
1082 | break; | |
1083 | } | |
1084 | ||
1085 | ret = ocfs2_inode_lock(child_inode, NULL, 0); | |
1086 | if (ret < 0) { | |
1087 | iput(child_inode); | |
1088 | if (ret != -ENOENT) | |
1089 | mlog_errno(ret); | |
1090 | break; | |
1091 | } | |
1092 | ||
1093 | ret = ocfs2_lookup_ino_from_name(child_inode, "..", 2, | |
1094 | &parent_inode_no); | |
1095 | ocfs2_inode_unlock(child_inode, 0); | |
1096 | iput(child_inode); | |
1097 | if (ret < 0) { | |
1098 | ret = -ENOENT; | |
1099 | break; | |
1100 | } | |
1101 | ||
1102 | if (parent_inode_no == dest_inode_no) { | |
1103 | ret = 1; | |
1104 | break; | |
1105 | } | |
1106 | ||
1107 | if (parent_inode_no == osb->root_inode->i_ino) { | |
1108 | ret = 0; | |
1109 | break; | |
1110 | } | |
1111 | ||
1112 | child_inode_no = parent_inode_no; | |
1113 | ||
1114 | if (++i >= MAX_LOOKUP_TIMES) { | |
1115 | mlog(ML_NOTICE, "max lookup times reached, filesystem " | |
1116 | "may have nested directories, " | |
1117 | "src inode: %llu, dest inode: %llu.\n", | |
1118 | (unsigned long long)src_inode_no, | |
1119 | (unsigned long long)dest_inode_no); | |
1120 | ret = 0; | |
1121 | break; | |
1122 | } | |
1123 | } | |
1124 | ||
1125 | return ret; | |
1126 | } | |
1127 | ||
ccd979bd | 1128 | /* |
53dc20b9 | 1129 | * The only place this should be used is rename and link! |
ccd979bd MF |
1130 | * if they have the same id, then the 1st one is the only one locked. |
1131 | */ | |
1132 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
1133 | struct buffer_head **bh1, |
1134 | struct inode *inode1, | |
1135 | struct buffer_head **bh2, | |
53dc20b9 X |
1136 | struct inode *inode2, |
1137 | int rename) | |
ccd979bd MF |
1138 | { |
1139 | int status; | |
f7a14f32 | 1140 | int inode1_is_ancestor, inode2_is_ancestor; |
ccd979bd MF |
1141 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); |
1142 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
ccd979bd | 1143 | |
8990e44a TM |
1144 | trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno, |
1145 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 1146 | |
ccd979bd MF |
1147 | if (*bh1) |
1148 | *bh1 = NULL; | |
1149 | if (*bh2) | |
1150 | *bh2 = NULL; | |
1151 | ||
f7a14f32 YJ |
1152 | /* we always want to lock the one with the lower lockid first. |
1153 | * and if they are nested, we lock ancestor first */ | |
ccd979bd | 1154 | if (oi1->ip_blkno != oi2->ip_blkno) { |
f7a14f32 YJ |
1155 | inode1_is_ancestor = ocfs2_check_if_ancestor(osb, oi2->ip_blkno, |
1156 | oi1->ip_blkno); | |
1157 | if (inode1_is_ancestor < 0) { | |
1158 | status = inode1_is_ancestor; | |
1159 | goto bail; | |
1160 | } | |
1161 | ||
1162 | inode2_is_ancestor = ocfs2_check_if_ancestor(osb, oi1->ip_blkno, | |
1163 | oi2->ip_blkno); | |
1164 | if (inode2_is_ancestor < 0) { | |
1165 | status = inode2_is_ancestor; | |
1166 | goto bail; | |
1167 | } | |
1168 | ||
1169 | if ((inode1_is_ancestor == 1) || | |
1170 | (oi1->ip_blkno < oi2->ip_blkno && | |
1171 | inode2_is_ancestor == 0)) { | |
ccd979bd | 1172 | /* switch id1 and id2 around */ |
ab1ba021 FF |
1173 | swap(bh2, bh1); |
1174 | swap(inode2, inode1); | |
ccd979bd MF |
1175 | } |
1176 | /* lock id2 */ | |
cb25797d | 1177 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
53dc20b9 | 1178 | rename == 1 ? OI_LS_RENAME1 : OI_LS_PARENT); |
ccd979bd MF |
1179 | if (status < 0) { |
1180 | if (status != -ENOENT) | |
1181 | mlog_errno(status); | |
1182 | goto bail; | |
1183 | } | |
1184 | } | |
8d5596c6 | 1185 | |
ccd979bd | 1186 | /* lock id1 */ |
53dc20b9 X |
1187 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, |
1188 | rename == 1 ? OI_LS_RENAME2 : OI_LS_PARENT); | |
ccd979bd | 1189 | if (status < 0) { |
8d5596c6 MF |
1190 | /* |
1191 | * An error return must mean that no cluster locks | |
1192 | * were held on function exit. | |
1193 | */ | |
1e6d9153 | 1194 | if (oi1->ip_blkno != oi2->ip_blkno) { |
e63aecb6 | 1195 | ocfs2_inode_unlock(inode2, 1); |
1e6d9153 TM |
1196 | brelse(*bh2); |
1197 | *bh2 = NULL; | |
1198 | } | |
8d5596c6 | 1199 | |
ccd979bd MF |
1200 | if (status != -ENOENT) |
1201 | mlog_errno(status); | |
ccd979bd | 1202 | } |
8d5596c6 | 1203 | |
8990e44a TM |
1204 | trace_ocfs2_double_lock_end( |
1205 | (unsigned long long)OCFS2_I(inode1)->ip_blkno, | |
1206 | (unsigned long long)OCFS2_I(inode2)->ip_blkno); | |
1207 | ||
ccd979bd | 1208 | bail: |
c1e8d35e TM |
1209 | if (status) |
1210 | mlog_errno(status); | |
ccd979bd MF |
1211 | return status; |
1212 | } | |
1213 | ||
8d5596c6 MF |
1214 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
1215 | { | |
e63aecb6 | 1216 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
1217 | |
1218 | if (inode1 != inode2) | |
e63aecb6 | 1219 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1220 | } |
1221 | ||
ccd979bd MF |
1222 | static int ocfs2_rename(struct inode *old_dir, |
1223 | struct dentry *old_dentry, | |
1224 | struct inode *new_dir, | |
1225 | struct dentry *new_dentry) | |
1226 | { | |
4a12ca3a MF |
1227 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1228 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
2b0143b5 DH |
1229 | struct inode *old_inode = d_inode(old_dentry); |
1230 | struct inode *new_inode = d_inode(new_dentry); | |
5098c27b | 1231 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1232 | struct ocfs2_dinode *newfe = NULL; |
1233 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
ccd979bd | 1234 | struct buffer_head *newfe_bh = NULL; |
592282cf | 1235 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd | 1236 | struct ocfs2_super *osb = NULL; |
5b6a3a2b | 1237 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1238 | handle_t *handle = NULL; |
ccd979bd MF |
1239 | struct buffer_head *old_dir_bh = NULL; |
1240 | struct buffer_head *new_dir_bh = NULL; | |
847c9db5 | 1241 | u32 old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1242 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1243 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1244 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1245 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1246 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1247 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
5fb1beb0 | 1248 | bool should_add_orphan = false; |
ccd979bd MF |
1249 | |
1250 | /* At some point it might be nice to break this function up a | |
1251 | * bit. */ | |
1252 | ||
8990e44a TM |
1253 | trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry, |
1254 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1255 | new_dentry->d_name.len, new_dentry->d_name.name); | |
ccd979bd | 1256 | |
9c89fe0a JK |
1257 | status = dquot_initialize(old_dir); |
1258 | if (status) { | |
1259 | mlog_errno(status); | |
1260 | goto bail; | |
1261 | } | |
1262 | status = dquot_initialize(new_dir); | |
1263 | if (status) { | |
1264 | mlog_errno(status); | |
1265 | goto bail; | |
1266 | } | |
907f4554 | 1267 | |
ccd979bd MF |
1268 | osb = OCFS2_SB(old_dir->i_sb); |
1269 | ||
1270 | if (new_inode) { | |
1271 | if (!igrab(new_inode)) | |
1272 | BUG(); | |
1273 | } | |
1274 | ||
1b3c3714 | 1275 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1276 | * a/b/c |
1277 | * a/d | |
1278 | * a,b,c, and d are all directories. | |
1279 | * | |
1280 | * from cwd of 'a' on both nodes: | |
1281 | * node1: mv b/c d | |
1282 | * node2: mv d b/c | |
1283 | * | |
1284 | * And that's why, just like the VFS, we need a file system | |
1285 | * rename lock. */ | |
5dabd695 | 1286 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1287 | status = ocfs2_rename_lock(osb); |
1288 | if (status < 0) { | |
1289 | mlog_errno(status); | |
1290 | goto bail; | |
1291 | } | |
1292 | rename_lock = 1; | |
f7a14f32 YJ |
1293 | |
1294 | /* here we cannot guarantee the inodes haven't just been | |
1295 | * changed, so check if they are nested again */ | |
1296 | status = ocfs2_check_if_ancestor(osb, new_dir->i_ino, | |
1297 | old_inode->i_ino); | |
1298 | if (status < 0) { | |
1299 | mlog_errno(status); | |
1300 | goto bail; | |
1301 | } else if (status == 1) { | |
1302 | status = -EPERM; | |
1303 | trace_ocfs2_rename_not_permitted( | |
1304 | (unsigned long long)old_inode->i_ino, | |
1305 | (unsigned long long)new_dir->i_ino); | |
1306 | goto bail; | |
1307 | } | |
ccd979bd MF |
1308 | } |
1309 | ||
ccd979bd | 1310 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 | 1311 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
53dc20b9 | 1312 | &new_dir_bh, new_dir, 1); |
ccd979bd MF |
1313 | if (status < 0) { |
1314 | mlog_errno(status); | |
1315 | goto bail; | |
1316 | } | |
8d5596c6 | 1317 | parents_locked = 1; |
ccd979bd | 1318 | |
928dda1f YJ |
1319 | if (!new_dir->i_nlink) { |
1320 | status = -EACCES; | |
1321 | goto bail; | |
1322 | } | |
1323 | ||
ccd979bd MF |
1324 | /* make sure both dirs have bhs |
1325 | * get an extra ref on old_dir_bh if old==new */ | |
1326 | if (!new_dir_bh) { | |
1327 | if (old_dir_bh) { | |
1328 | new_dir_bh = old_dir_bh; | |
1329 | get_bh(new_dir_bh); | |
1330 | } else { | |
1331 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1332 | status = -EIO; | |
1333 | goto bail; | |
1334 | } | |
1335 | } | |
1336 | ||
379dfe9d | 1337 | /* |
592282cf | 1338 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1339 | * also ensures that the downconvert thread on other nodes |
1340 | * won't have to concurrently downconvert the inode and the | |
1341 | * dentry locks. | |
379dfe9d | 1342 | */ |
cb25797d JK |
1343 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
1344 | OI_LS_PARENT); | |
379dfe9d MF |
1345 | if (status < 0) { |
1346 | if (status != -ENOENT) | |
ccd979bd | 1347 | mlog_errno(status); |
379dfe9d MF |
1348 | goto bail; |
1349 | } | |
8d5596c6 | 1350 | old_child_locked = 1; |
ccd979bd | 1351 | |
379dfe9d MF |
1352 | status = ocfs2_remote_dentry_delete(old_dentry); |
1353 | if (status < 0) { | |
1354 | mlog_errno(status); | |
1355 | goto bail; | |
1356 | } | |
1357 | ||
1358 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1359 | u64 old_inode_parent; |
1360 | ||
4a12ca3a | 1361 | update_dot_dot = 1; |
38760e24 | 1362 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1363 | old_inode, |
1364 | &old_inode_dot_dot_res); | |
38760e24 MF |
1365 | if (status) { |
1366 | status = -EIO; | |
ccd979bd | 1367 | goto bail; |
38760e24 | 1368 | } |
ccd979bd | 1369 | |
38760e24 MF |
1370 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1371 | status = -EIO; | |
ccd979bd | 1372 | goto bail; |
38760e24 MF |
1373 | } |
1374 | ||
1375 | if (!new_inode && new_dir != old_dir && | |
198a1ca3 | 1376 | new_dir->i_nlink >= ocfs2_link_max(osb)) { |
38760e24 | 1377 | status = -EMLINK; |
ccd979bd | 1378 | goto bail; |
38760e24 | 1379 | } |
ccd979bd MF |
1380 | } |
1381 | ||
5b6a3a2b MF |
1382 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1383 | old_dentry->d_name.len, | |
1384 | &old_de_ino); | |
1385 | if (status) { | |
1386 | status = -ENOENT; | |
ccd979bd | 1387 | goto bail; |
5b6a3a2b | 1388 | } |
ccd979bd MF |
1389 | |
1390 | /* | |
1391 | * Check for inode number is _not_ due to possible IO errors. | |
1392 | * We might rmdir the source, keep it as pwd of some process | |
1393 | * and merrily kill the link to whatever was created under the | |
1394 | * same name. Goodbye sticky bit ;-< | |
1395 | */ | |
5b6a3a2b MF |
1396 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1397 | status = -ENOENT; | |
ccd979bd | 1398 | goto bail; |
5b6a3a2b | 1399 | } |
ccd979bd MF |
1400 | |
1401 | /* check if the target already exists (in which case we need | |
1402 | * to delete it */ | |
1403 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1404 | new_dentry->d_name.len, | |
4a12ca3a MF |
1405 | &newfe_blkno, new_dir, |
1406 | &target_lookup_res); | |
ccd979bd MF |
1407 | /* The only error we allow here is -ENOENT because the new |
1408 | * file not existing is perfectly valid. */ | |
1409 | if ((status < 0) && (status != -ENOENT)) { | |
1410 | /* If we cannot find the file specified we should just */ | |
1411 | /* return the error... */ | |
1412 | mlog_errno(status); | |
1413 | goto bail; | |
1414 | } | |
4a12ca3a MF |
1415 | if (status == 0) |
1416 | target_exists = 1; | |
ccd979bd | 1417 | |
4a12ca3a | 1418 | if (!target_exists && new_inode) { |
e325a88f SE |
1419 | /* |
1420 | * Target was unlinked by another node while we were | |
1421 | * waiting to get to ocfs2_rename(). There isn't | |
1422 | * anything we can do here to help the situation, so | |
1423 | * bubble up the appropriate error. | |
1424 | */ | |
1425 | status = -ENOENT; | |
1426 | goto bail; | |
1427 | } | |
ccd979bd MF |
1428 | |
1429 | /* In case we need to overwrite an existing file, we blow it | |
1430 | * away first */ | |
4a12ca3a | 1431 | if (target_exists) { |
ccd979bd MF |
1432 | /* VFS didn't think there existed an inode here, but |
1433 | * someone else in the cluster must have raced our | |
1434 | * rename to create one. Today we error cleanly, in | |
1435 | * the future we should consider calling iget to build | |
1436 | * a new struct inode for this entry. */ | |
1437 | if (!new_inode) { | |
1438 | status = -EACCES; | |
1439 | ||
8990e44a TM |
1440 | trace_ocfs2_rename_target_exists(new_dentry->d_name.len, |
1441 | new_dentry->d_name.name); | |
ccd979bd MF |
1442 | goto bail; |
1443 | } | |
1444 | ||
1445 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1446 | status = -EACCES; | |
1447 | ||
8990e44a | 1448 | trace_ocfs2_rename_disagree( |
b0697053 MF |
1449 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, |
1450 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1451 | OCFS2_I(new_inode)->ip_flags); |
1452 | goto bail; | |
1453 | } | |
1454 | ||
e63aecb6 | 1455 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1456 | if (status < 0) { |
1457 | if (status != -ENOENT) | |
1458 | mlog_errno(status); | |
1459 | goto bail; | |
1460 | } | |
8d5596c6 | 1461 | new_child_locked = 1; |
ccd979bd | 1462 | |
379dfe9d | 1463 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1464 | if (status < 0) { |
1465 | mlog_errno(status); | |
1466 | goto bail; | |
1467 | } | |
1468 | ||
1469 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1470 | ||
8990e44a | 1471 | trace_ocfs2_rename_over_existing( |
b0697053 | 1472 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1473 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1474 | ||
1475 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1476 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
19bd341f | 1477 | OCFS2_I(new_inode)->ip_blkno, |
06ee5c75 JQ |
1478 | orphan_name, &orphan_insert, |
1479 | false); | |
ccd979bd MF |
1480 | if (status < 0) { |
1481 | mlog_errno(status); | |
1482 | goto bail; | |
1483 | } | |
5fb1beb0 | 1484 | should_add_orphan = true; |
ccd979bd MF |
1485 | } |
1486 | } else { | |
2b0143b5 | 1487 | BUG_ON(d_inode(new_dentry->d_parent) != new_dir); |
ccd979bd MF |
1488 | |
1489 | status = ocfs2_check_dir_for_entry(new_dir, | |
1490 | new_dentry->d_name.name, | |
1491 | new_dentry->d_name.len); | |
1492 | if (status) | |
1493 | goto bail; | |
1494 | ||
1495 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1496 | new_dentry->d_name.name, | |
1497 | new_dentry->d_name.len, | |
4a12ca3a | 1498 | &target_insert); |
ccd979bd MF |
1499 | if (status < 0) { |
1500 | mlog_errno(status); | |
1501 | goto bail; | |
1502 | } | |
1503 | } | |
1504 | ||
a90714c1 | 1505 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1506 | if (IS_ERR(handle)) { |
1507 | status = PTR_ERR(handle); | |
1508 | handle = NULL; | |
1509 | mlog_errno(status); | |
1510 | goto bail; | |
1511 | } | |
1512 | ||
4a12ca3a | 1513 | if (target_exists) { |
ccd979bd | 1514 | if (S_ISDIR(new_inode->i_mode)) { |
b80b549c MF |
1515 | if (new_inode->i_nlink != 2 || |
1516 | !ocfs2_empty_dir(new_inode)) { | |
ccd979bd MF |
1517 | status = -ENOTEMPTY; |
1518 | goto bail; | |
1519 | } | |
1520 | } | |
0cf2f763 JB |
1521 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
1522 | newfe_bh, | |
13723d00 | 1523 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1524 | if (status < 0) { |
1525 | mlog_errno(status); | |
1526 | goto bail; | |
1527 | } | |
1528 | ||
ccd979bd | 1529 | /* change the dirent to point to the correct inode */ |
4a12ca3a MF |
1530 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1531 | old_inode); | |
ccd979bd MF |
1532 | if (status < 0) { |
1533 | mlog_errno(status); | |
1534 | goto bail; | |
1535 | } | |
ccd979bd | 1536 | new_dir->i_version++; |
ccd979bd MF |
1537 | |
1538 | if (S_ISDIR(new_inode->i_mode)) | |
198a1ca3 | 1539 | ocfs2_set_links_count(newfe, 0); |
ccd979bd | 1540 | else |
198a1ca3 | 1541 | ocfs2_add_links_count(newfe, -1); |
ec20cec7 | 1542 | ocfs2_journal_dirty(handle, newfe_bh); |
5fb1beb0 | 1543 | if (should_add_orphan) { |
1544 | status = ocfs2_orphan_add(osb, handle, new_inode, | |
1545 | newfe_bh, orphan_name, | |
06ee5c75 | 1546 | &orphan_insert, orphan_dir, false); |
5fb1beb0 | 1547 | if (status < 0) { |
1548 | mlog_errno(status); | |
1549 | goto bail; | |
1550 | } | |
1551 | } | |
ccd979bd MF |
1552 | } else { |
1553 | /* if the name was not found in new_dir, add it now */ | |
1554 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1555 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1556 | new_dir_bh, &target_insert); |
ccd979bd MF |
1557 | } |
1558 | ||
1559 | old_inode->i_ctime = CURRENT_TIME; | |
1560 | mark_inode_dirty(old_inode); | |
480214d7 | 1561 | |
0cf2f763 JB |
1562 | status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), |
1563 | old_inode_bh, | |
13723d00 | 1564 | OCFS2_JOURNAL_ACCESS_WRITE); |
480214d7 SM |
1565 | if (status >= 0) { |
1566 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1567 | ||
1568 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); | |
1569 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); | |
ec20cec7 | 1570 | ocfs2_journal_dirty(handle, old_inode_bh); |
480214d7 SM |
1571 | } else |
1572 | mlog_errno(status); | |
ccd979bd | 1573 | |
5b6a3a2b MF |
1574 | /* |
1575 | * Now that the name has been added to new_dir, remove the old name. | |
1576 | * | |
1577 | * We don't keep any directory entry context around until now | |
1578 | * because the insert might have changed the type of directory | |
1579 | * we're dealing with. | |
1580 | */ | |
4a12ca3a MF |
1581 | status = ocfs2_find_entry(old_dentry->d_name.name, |
1582 | old_dentry->d_name.len, old_dir, | |
1583 | &old_entry_lookup); | |
807a7907 | 1584 | if (status) { |
1585 | if (!is_journal_aborted(osb->journal->j_journal)) { | |
1586 | ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " | |
1587 | "is not deleted.", | |
1588 | new_dentry->d_name.len, new_dentry->d_name.name, | |
1589 | old_dentry->d_name.len, old_dentry->d_name.name); | |
1590 | } | |
5b6a3a2b | 1591 | goto bail; |
807a7907 | 1592 | } |
5b6a3a2b | 1593 | |
4a12ca3a | 1594 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
ccd979bd MF |
1595 | if (status < 0) { |
1596 | mlog_errno(status); | |
807a7907 | 1597 | if (!is_journal_aborted(osb->journal->j_journal)) { |
1598 | ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " | |
1599 | "is not deleted.", | |
1600 | new_dentry->d_name.len, new_dentry->d_name.name, | |
1601 | old_dentry->d_name.len, old_dentry->d_name.name); | |
1602 | } | |
ccd979bd MF |
1603 | goto bail; |
1604 | } | |
1605 | ||
1606 | if (new_inode) { | |
6d6b77f1 | 1607 | drop_nlink(new_inode); |
ccd979bd MF |
1608 | new_inode->i_ctime = CURRENT_TIME; |
1609 | } | |
1610 | old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME; | |
4a12ca3a MF |
1611 | |
1612 | if (update_dot_dot) { | |
1613 | status = ocfs2_update_entry(old_inode, handle, | |
1614 | &old_inode_dot_dot_res, new_dir); | |
6d6b77f1 | 1615 | drop_nlink(old_dir); |
ccd979bd | 1616 | if (new_inode) { |
6d6b77f1 | 1617 | drop_nlink(new_inode); |
ccd979bd | 1618 | } else { |
d8c76e6f | 1619 | inc_nlink(new_dir); |
ccd979bd MF |
1620 | mark_inode_dirty(new_dir); |
1621 | } | |
1622 | } | |
1623 | mark_inode_dirty(old_dir); | |
592282cf MF |
1624 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1625 | if (new_inode) { | |
ccd979bd | 1626 | mark_inode_dirty(new_inode); |
592282cf MF |
1627 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1628 | } | |
ccd979bd | 1629 | |
592282cf MF |
1630 | if (old_dir != new_dir) { |
1631 | /* Keep the same times on both directories.*/ | |
1632 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; | |
1633 | ||
1634 | /* | |
1635 | * This will also pick up the i_nlink change from the | |
1636 | * block above. | |
1637 | */ | |
1638 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1639 | } | |
ccd979bd MF |
1640 | |
1641 | if (old_dir_nlink != old_dir->i_nlink) { | |
1642 | if (!old_dir_bh) { | |
1643 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1644 | "%llu from %d to %d but bh is NULL!\n", |
1645 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1646 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1647 | } else { |
1648 | struct ocfs2_dinode *fe; | |
0cf2f763 JB |
1649 | status = ocfs2_journal_access_di(handle, |
1650 | INODE_CACHE(old_dir), | |
1651 | old_dir_bh, | |
1652 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd | 1653 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
198a1ca3 | 1654 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
ec20cec7 | 1655 | ocfs2_journal_dirty(handle, old_dir_bh); |
ccd979bd MF |
1656 | } |
1657 | } | |
379dfe9d | 1658 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1659 | status = 0; |
1660 | bail: | |
ccd979bd | 1661 | if (handle) |
02dc1af4 | 1662 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1663 | |
5098c27b MF |
1664 | if (orphan_dir) { |
1665 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1666 | ocfs2_inode_unlock(orphan_dir, 1); |
5955102c | 1667 | inode_unlock(orphan_dir); |
5098c27b MF |
1668 | iput(orphan_dir); |
1669 | } | |
1670 | ||
3cb2ec43 JQ |
1671 | if (new_child_locked) |
1672 | ocfs2_inode_unlock(new_inode, 1); | |
1673 | ||
1674 | if (old_child_locked) | |
1675 | ocfs2_inode_unlock(old_inode, 1); | |
1676 | ||
1677 | if (parents_locked) | |
1678 | ocfs2_double_unlock(old_dir, new_dir); | |
1679 | ||
1680 | if (rename_lock) | |
1681 | ocfs2_rename_unlock(osb); | |
1682 | ||
ccd979bd MF |
1683 | if (new_inode) |
1684 | sync_mapping_buffers(old_inode->i_mapping); | |
1685 | ||
72865d92 | 1686 | iput(new_inode); |
4a12ca3a MF |
1687 | |
1688 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1689 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1690 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1691 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1692 | ocfs2_free_dir_lookup_result(&target_insert); | |
1693 | ||
a81cb88b MF |
1694 | brelse(newfe_bh); |
1695 | brelse(old_inode_bh); | |
1696 | brelse(old_dir_bh); | |
1697 | brelse(new_dir_bh); | |
ccd979bd | 1698 | |
c1e8d35e TM |
1699 | if (status) |
1700 | mlog_errno(status); | |
ccd979bd MF |
1701 | |
1702 | return status; | |
1703 | } | |
1704 | ||
1705 | /* | |
1706 | * we expect i_size = strlen(symname). Copy symname into the file | |
1707 | * data, including the null terminator. | |
1708 | */ | |
1709 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1710 | handle_t *handle, |
ccd979bd MF |
1711 | struct inode *inode, |
1712 | const char *symname) | |
1713 | { | |
1714 | struct buffer_head **bhs = NULL; | |
1715 | const char *c; | |
1716 | struct super_block *sb = osb->sb; | |
4f902c37 | 1717 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1718 | int virtual, blocks, status, i, bytes_left; |
1719 | ||
1720 | bytes_left = i_size_read(inode) + 1; | |
1721 | /* we can't trust i_blocks because we're actually going to | |
1722 | * write i_size + 1 bytes. */ | |
1723 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1724 | ||
8990e44a TM |
1725 | trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks, |
1726 | i_size_read(inode), blocks); | |
ccd979bd MF |
1727 | |
1728 | /* Sanity check -- make sure we're going to fit. */ | |
1729 | if (bytes_left > | |
1730 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1731 | status = -EIO; | |
1732 | mlog_errno(status); | |
1733 | goto bail; | |
1734 | } | |
1735 | ||
1736 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1737 | if (!bhs) { | |
1738 | status = -ENOMEM; | |
1739 | mlog_errno(status); | |
1740 | goto bail; | |
1741 | } | |
1742 | ||
49cb8d2d MF |
1743 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1744 | NULL); | |
ccd979bd MF |
1745 | if (status < 0) { |
1746 | mlog_errno(status); | |
1747 | goto bail; | |
1748 | } | |
1749 | ||
1750 | /* links can never be larger than one cluster so we know this | |
1751 | * is all going to be contiguous, but do a sanity check | |
1752 | * anyway. */ | |
1753 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1754 | status = -EIO; | |
1755 | mlog_errno(status); | |
1756 | goto bail; | |
1757 | } | |
1758 | ||
1759 | virtual = 0; | |
1760 | while(bytes_left > 0) { | |
1761 | c = &symname[virtual * sb->s_blocksize]; | |
1762 | ||
1763 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1764 | if (!bhs[virtual]) { | |
1765 | status = -ENOMEM; | |
1766 | mlog_errno(status); | |
1767 | goto bail; | |
1768 | } | |
8cb471e8 JB |
1769 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
1770 | bhs[virtual]); | |
ccd979bd | 1771 | |
0cf2f763 JB |
1772 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
1773 | bhs[virtual], | |
ccd979bd MF |
1774 | OCFS2_JOURNAL_ACCESS_CREATE); |
1775 | if (status < 0) { | |
1776 | mlog_errno(status); | |
1777 | goto bail; | |
1778 | } | |
1779 | ||
1780 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1781 | ||
1782 | memcpy(bhs[virtual]->b_data, c, | |
1783 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1784 | bytes_left); | |
1785 | ||
ec20cec7 | 1786 | ocfs2_journal_dirty(handle, bhs[virtual]); |
ccd979bd MF |
1787 | |
1788 | virtual++; | |
1789 | p_blkno++; | |
1790 | bytes_left -= sb->s_blocksize; | |
1791 | } | |
1792 | ||
1793 | status = 0; | |
1794 | bail: | |
1795 | ||
1796 | if (bhs) { | |
1797 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1798 | brelse(bhs[i]); |
ccd979bd MF |
1799 | kfree(bhs); |
1800 | } | |
1801 | ||
c1e8d35e TM |
1802 | if (status) |
1803 | mlog_errno(status); | |
ccd979bd MF |
1804 | return status; |
1805 | } | |
1806 | ||
1807 | static int ocfs2_symlink(struct inode *dir, | |
1808 | struct dentry *dentry, | |
1809 | const char *symname) | |
1810 | { | |
1811 | int status, l, credits; | |
1812 | u64 newsize; | |
1813 | struct ocfs2_super *osb = NULL; | |
1814 | struct inode *inode = NULL; | |
1815 | struct super_block *sb; | |
1816 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1817 | struct buffer_head *parent_fe_bh = NULL; |
1818 | struct ocfs2_dinode *fe = NULL; | |
1819 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1820 | handle_t *handle = NULL; |
ccd979bd MF |
1821 | struct ocfs2_alloc_context *inode_ac = NULL; |
1822 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1823 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1824 | int want_clusters = 0; | |
1825 | int xattr_credits = 0; | |
1826 | struct ocfs2_security_xattr_info si = { | |
1827 | .enable = 1, | |
1828 | }; | |
a90714c1 | 1829 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1830 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
1831 | sigset_t oldset; |
1832 | int did_block_signals = 0; | |
595297a8 | 1833 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 1834 | |
8990e44a TM |
1835 | trace_ocfs2_symlink_begin(dir, dentry, symname, |
1836 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 1837 | |
9c89fe0a JK |
1838 | status = dquot_initialize(dir); |
1839 | if (status) { | |
1840 | mlog_errno(status); | |
1841 | goto bail; | |
1842 | } | |
907f4554 | 1843 | |
ccd979bd MF |
1844 | sb = dir->i_sb; |
1845 | osb = OCFS2_SB(sb); | |
1846 | ||
1847 | l = strlen(symname) + 1; | |
1848 | ||
1849 | credits = ocfs2_calc_symlink_credits(sb); | |
1850 | ||
ccd979bd | 1851 | /* lock the parent directory */ |
e63aecb6 | 1852 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1853 | if (status < 0) { |
1854 | if (status != -ENOENT) | |
1855 | mlog_errno(status); | |
6d8fc40e | 1856 | return status; |
ccd979bd MF |
1857 | } |
1858 | ||
1859 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
198a1ca3 | 1860 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
1861 | /* can't make a file in a deleted directory. */ |
1862 | status = -ENOENT; | |
1863 | goto bail; | |
1864 | } | |
1865 | ||
1866 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1867 | dentry->d_name.len); | |
1868 | if (status) | |
1869 | goto bail; | |
1870 | ||
1871 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1872 | dentry->d_name.name, | |
4a12ca3a | 1873 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1874 | if (status < 0) { |
1875 | mlog_errno(status); | |
1876 | goto bail; | |
1877 | } | |
1878 | ||
da5cbf2f | 1879 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1880 | if (status < 0) { |
1881 | if (status != -ENOSPC) | |
1882 | mlog_errno(status); | |
1883 | goto bail; | |
1884 | } | |
1885 | ||
f5d36202 | 1886 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
9c89fe0a JK |
1887 | if (IS_ERR(inode)) { |
1888 | status = PTR_ERR(inode); | |
1889 | inode = NULL; | |
f5d36202 TY |
1890 | mlog_errno(status); |
1891 | goto bail; | |
1892 | } | |
1893 | ||
534eaddd | 1894 | /* get security xattr */ |
2a7dba39 | 1895 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
1896 | if (status) { |
1897 | if (status == -EOPNOTSUPP) | |
1898 | si.enable = 0; | |
1899 | else { | |
1900 | mlog_errno(status); | |
1901 | goto bail; | |
1902 | } | |
1903 | } | |
1904 | ||
1905 | /* calculate meta data/clusters for setting security xattr */ | |
1906 | if (si.enable) { | |
1907 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1908 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1909 | if (status < 0) { |
534eaddd | 1910 | mlog_errno(status); |
ccd979bd MF |
1911 | goto bail; |
1912 | } | |
1913 | } | |
1914 | ||
534eaddd TY |
1915 | /* don't reserve bitmap space for fast symlinks. */ |
1916 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1917 | want_clusters += 1; | |
1918 | ||
1919 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1920 | if (status < 0) { | |
1921 | if (status != -ENOSPC) | |
1922 | mlog_errno(status); | |
1923 | goto bail; | |
1924 | } | |
1925 | ||
1926 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1927 | if (IS_ERR(handle)) { |
1928 | status = PTR_ERR(handle); | |
1929 | handle = NULL; | |
1930 | mlog_errno(status); | |
1931 | goto bail; | |
1932 | } | |
1933 | ||
547ba7c8 JB |
1934 | /* Starting to change things, restart is no longer possible. */ |
1935 | ocfs2_block_signals(&oldset); | |
1936 | did_block_signals = 1; | |
1937 | ||
63936dda CH |
1938 | status = dquot_alloc_inode(inode); |
1939 | if (status) | |
a90714c1 | 1940 | goto bail; |
a90714c1 JK |
1941 | did_quota_inode = 1; |
1942 | ||
8990e44a TM |
1943 | trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len, |
1944 | dentry->d_name.name, | |
1945 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
1946 | inode->i_mode); | |
19bd341f TM |
1947 | |
1948 | status = ocfs2_mknod_locked(osb, dir, inode, | |
f5d36202 TY |
1949 | 0, &new_fe_bh, parent_fe_bh, handle, |
1950 | inode_ac); | |
ccd979bd MF |
1951 | if (status < 0) { |
1952 | mlog_errno(status); | |
1953 | goto bail; | |
1954 | } | |
1955 | ||
1956 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1957 | inode->i_rdev = 0; | |
1958 | newsize = l - 1; | |
ea022dfb | 1959 | inode->i_op = &ocfs2_symlink_inode_operations; |
21fc61c7 | 1960 | inode_nohighmem(inode); |
ccd979bd | 1961 | if (l > ocfs2_fast_symlink_chars(sb)) { |
dcd0538f MF |
1962 | u32 offset = 0; |
1963 | ||
5dd4056d CH |
1964 | status = dquot_alloc_space_nodirty(inode, |
1965 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1966 | if (status) | |
a90714c1 | 1967 | goto bail; |
a90714c1 | 1968 | did_quota = 1; |
ea022dfb | 1969 | inode->i_mapping->a_ops = &ocfs2_aops; |
0eb8d47e TM |
1970 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1971 | new_fe_bh, | |
1972 | handle, data_ac, NULL, | |
1973 | NULL); | |
ccd979bd MF |
1974 | if (status < 0) { |
1975 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1976 | mlog(ML_ERROR, |
1977 | "Failed to extend file to %llu\n", | |
1978 | (unsigned long long)newsize); | |
ccd979bd MF |
1979 | mlog_errno(status); |
1980 | status = -ENOSPC; | |
1981 | } | |
1982 | goto bail; | |
1983 | } | |
1984 | i_size_write(inode, newsize); | |
8110b073 | 1985 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd | 1986 | } else { |
ea022dfb | 1987 | inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops; |
ccd979bd MF |
1988 | memcpy((char *) fe->id2.i_symlink, symname, l); |
1989 | i_size_write(inode, newsize); | |
1990 | inode->i_blocks = 0; | |
1991 | } | |
1992 | ||
1993 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1994 | if (status < 0) { | |
1995 | mlog_errno(status); | |
1996 | goto bail; | |
1997 | } | |
1998 | ||
1999 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
2000 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
2001 | symname); | |
2002 | if (status < 0) { | |
2003 | mlog_errno(status); | |
2004 | goto bail; | |
2005 | } | |
2006 | } | |
2007 | ||
534eaddd TY |
2008 | if (si.enable) { |
2009 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
2010 | xattr_ac, data_ac); | |
2011 | if (status < 0) { | |
2012 | mlog_errno(status); | |
2013 | goto bail; | |
2014 | } | |
2015 | } | |
2016 | ||
a9743fcd MF |
2017 | /* |
2018 | * Do this before adding the entry to the directory. We add | |
2019 | * also set d_op after success so that ->d_iput() will cleanup | |
2020 | * the dentry lock even if ocfs2_add_entry() fails below. | |
2021 | */ | |
2022 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); | |
2023 | if (status) { | |
ccd979bd MF |
2024 | mlog_errno(status); |
2025 | goto bail; | |
2026 | } | |
2027 | ||
595297a8 | 2028 | dl = dentry->d_fsdata; |
2029 | ||
a9743fcd MF |
2030 | status = ocfs2_add_entry(handle, dentry, inode, |
2031 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
2032 | &lookup); | |
2033 | if (status < 0) { | |
379dfe9d MF |
2034 | mlog_errno(status); |
2035 | goto bail; | |
2036 | } | |
2037 | ||
ccd979bd | 2038 | insert_inode_hash(inode); |
ccd979bd MF |
2039 | d_instantiate(dentry, inode); |
2040 | bail: | |
a90714c1 | 2041 | if (status < 0 && did_quota) |
5dd4056d | 2042 | dquot_free_space_nodirty(inode, |
a90714c1 JK |
2043 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
2044 | if (status < 0 && did_quota_inode) | |
63936dda | 2045 | dquot_free_inode(inode); |
ccd979bd | 2046 | if (handle) |
02dc1af4 | 2047 | ocfs2_commit_trans(osb, handle); |
6d8fc40e | 2048 | |
e63aecb6 | 2049 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
2050 | if (did_block_signals) |
2051 | ocfs2_unblock_signals(&oldset); | |
6d8fc40e | 2052 | |
a81cb88b MF |
2053 | brelse(new_fe_bh); |
2054 | brelse(parent_fe_bh); | |
534eaddd | 2055 | kfree(si.value); |
4a12ca3a | 2056 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
2057 | if (inode_ac) |
2058 | ocfs2_free_alloc_context(inode_ac); | |
2059 | if (data_ac) | |
2060 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
2061 | if (xattr_ac) |
2062 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 | 2063 | if ((status < 0) && inode) { |
595297a8 | 2064 | if (dl) |
2065 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
2066 | ||
ab41fdc8 | 2067 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
f5d36202 | 2068 | clear_nlink(inode); |
ccd979bd | 2069 | iput(inode); |
f5d36202 | 2070 | } |
ccd979bd | 2071 | |
c1e8d35e TM |
2072 | if (status) |
2073 | mlog_errno(status); | |
ccd979bd MF |
2074 | |
2075 | return status; | |
2076 | } | |
2077 | ||
ccd979bd MF |
2078 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
2079 | { | |
2080 | int status, namelen; | |
2081 | ||
b0697053 MF |
2082 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
2083 | (long long)blkno); | |
ccd979bd MF |
2084 | if (namelen <= 0) { |
2085 | if (namelen) | |
2086 | status = namelen; | |
2087 | else | |
2088 | status = -EINVAL; | |
2089 | mlog_errno(status); | |
2090 | goto bail; | |
2091 | } | |
2092 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
2093 | status = -EINVAL; | |
2094 | mlog_errno(status); | |
2095 | goto bail; | |
2096 | } | |
2097 | ||
8990e44a | 2098 | trace_ocfs2_blkno_stringify(blkno, name, namelen); |
ccd979bd MF |
2099 | |
2100 | status = 0; | |
2101 | bail: | |
c1e8d35e TM |
2102 | if (status < 0) |
2103 | mlog_errno(status); | |
ccd979bd MF |
2104 | return status; |
2105 | } | |
2106 | ||
dd43bcde MF |
2107 | static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb, |
2108 | struct inode **ret_orphan_dir, | |
2109 | struct buffer_head **ret_orphan_dir_bh) | |
ccd979bd | 2110 | { |
5098c27b | 2111 | struct inode *orphan_dir_inode; |
ccd979bd | 2112 | struct buffer_head *orphan_dir_bh = NULL; |
dd43bcde | 2113 | int ret = 0; |
ccd979bd MF |
2114 | |
2115 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2116 | ORPHAN_DIR_SYSTEM_INODE, | |
2117 | osb->slot_num); | |
2118 | if (!orphan_dir_inode) { | |
dd43bcde MF |
2119 | ret = -ENOENT; |
2120 | mlog_errno(ret); | |
2121 | return ret; | |
ccd979bd MF |
2122 | } |
2123 | ||
5955102c | 2124 | inode_lock(orphan_dir_inode); |
5098c27b | 2125 | |
dd43bcde MF |
2126 | ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2127 | if (ret < 0) { | |
5955102c | 2128 | inode_unlock(orphan_dir_inode); |
dd43bcde MF |
2129 | iput(orphan_dir_inode); |
2130 | ||
2131 | mlog_errno(ret); | |
2132 | return ret; | |
ccd979bd MF |
2133 | } |
2134 | ||
dd43bcde MF |
2135 | *ret_orphan_dir = orphan_dir_inode; |
2136 | *ret_orphan_dir_bh = orphan_dir_bh; | |
5098c27b | 2137 | |
dd43bcde MF |
2138 | return 0; |
2139 | } | |
2140 | ||
2141 | static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode, | |
2142 | struct buffer_head *orphan_dir_bh, | |
2143 | u64 blkno, | |
2144 | char *name, | |
06ee5c75 JQ |
2145 | struct ocfs2_dir_lookup_result *lookup, |
2146 | bool dio) | |
dd43bcde MF |
2147 | { |
2148 | int ret; | |
2149 | struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb); | |
06ee5c75 JQ |
2150 | int namelen = dio ? |
2151 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2152 | OCFS2_ORPHAN_NAMELEN; | |
2153 | ||
2154 | if (dio) { | |
2155 | ret = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2156 | OCFS2_DIO_ORPHAN_PREFIX); | |
2157 | if (ret != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2158 | ret = -EINVAL; | |
2159 | mlog_errno(ret); | |
2160 | return ret; | |
2161 | } | |
dd43bcde | 2162 | |
06ee5c75 JQ |
2163 | ret = ocfs2_blkno_stringify(blkno, |
2164 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2165 | } else | |
2166 | ret = ocfs2_blkno_stringify(blkno, name); | |
dd43bcde MF |
2167 | if (ret < 0) { |
2168 | mlog_errno(ret); | |
2169 | return ret; | |
2170 | } | |
2171 | ||
2172 | ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
2173 | orphan_dir_bh, name, | |
06ee5c75 | 2174 | namelen, lookup); |
dd43bcde MF |
2175 | if (ret < 0) { |
2176 | mlog_errno(ret); | |
2177 | return ret; | |
2178 | } | |
2179 | ||
2180 | return 0; | |
2181 | } | |
2182 | ||
2183 | /** | |
2184 | * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for | |
2185 | * insertion of an orphan. | |
2186 | * @osb: ocfs2 file system | |
2187 | * @ret_orphan_dir: Orphan dir inode - returned locked! | |
2188 | * @blkno: Actual block number of the inode to be inserted into orphan dir. | |
2189 | * @lookup: dir lookup result, to be passed back into functions like | |
2190 | * ocfs2_orphan_add | |
2191 | * | |
2192 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2193 | * fields will be populated. | |
2194 | * | |
2195 | * Returns non-zero on failure. | |
2196 | */ | |
2197 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
2198 | struct inode **ret_orphan_dir, | |
2199 | u64 blkno, | |
2200 | char *name, | |
06ee5c75 JQ |
2201 | struct ocfs2_dir_lookup_result *lookup, |
2202 | bool dio) | |
dd43bcde MF |
2203 | { |
2204 | struct inode *orphan_dir_inode = NULL; | |
2205 | struct buffer_head *orphan_dir_bh = NULL; | |
2206 | int ret = 0; | |
2207 | ||
2208 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode, | |
2209 | &orphan_dir_bh); | |
2210 | if (ret < 0) { | |
2211 | mlog_errno(ret); | |
2212 | return ret; | |
2213 | } | |
2214 | ||
2215 | ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh, | |
06ee5c75 | 2216 | blkno, name, lookup, dio); |
dd43bcde MF |
2217 | if (ret < 0) { |
2218 | mlog_errno(ret); | |
2219 | goto out; | |
ccd979bd MF |
2220 | } |
2221 | ||
5098c27b MF |
2222 | *ret_orphan_dir = orphan_dir_inode; |
2223 | ||
dd43bcde MF |
2224 | out: |
2225 | brelse(orphan_dir_bh); | |
2226 | ||
2227 | if (ret) { | |
2228 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2229 | inode_unlock(orphan_dir_inode); |
ccd979bd | 2230 | iput(orphan_dir_inode); |
5098c27b | 2231 | } |
ccd979bd | 2232 | |
c1e8d35e TM |
2233 | if (ret) |
2234 | mlog_errno(ret); | |
dd43bcde | 2235 | return ret; |
ccd979bd MF |
2236 | } |
2237 | ||
2238 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 2239 | handle_t *handle, |
ccd979bd | 2240 | struct inode *inode, |
3939fda4 | 2241 | struct buffer_head *fe_bh, |
ccd979bd | 2242 | char *name, |
4a12ca3a | 2243 | struct ocfs2_dir_lookup_result *lookup, |
06ee5c75 JQ |
2244 | struct inode *orphan_dir_inode, |
2245 | bool dio) | |
ccd979bd | 2246 | { |
ccd979bd MF |
2247 | struct buffer_head *orphan_dir_bh = NULL; |
2248 | int status = 0; | |
2249 | struct ocfs2_dinode *orphan_fe; | |
3939fda4 | 2250 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; |
06ee5c75 JQ |
2251 | int namelen = dio ? |
2252 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2253 | OCFS2_ORPHAN_NAMELEN; | |
ccd979bd | 2254 | |
8990e44a TM |
2255 | trace_ocfs2_orphan_add_begin( |
2256 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 2257 | |
b657c95c | 2258 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
2259 | if (status < 0) { |
2260 | mlog_errno(status); | |
2261 | goto leave; | |
2262 | } | |
2263 | ||
0cf2f763 JB |
2264 | status = ocfs2_journal_access_di(handle, |
2265 | INODE_CACHE(orphan_dir_inode), | |
2266 | orphan_dir_bh, | |
13723d00 | 2267 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2268 | if (status < 0) { |
2269 | mlog_errno(status); | |
2270 | goto leave; | |
2271 | } | |
2272 | ||
ea45466a YL |
2273 | /* |
2274 | * We're going to journal the change of i_flags and i_orphaned_slot. | |
2275 | * It's safe anyway, though some callers may duplicate the journaling. | |
2276 | * Journaling within the func just make the logic look more | |
2277 | * straightforward. | |
2278 | */ | |
2279 | status = ocfs2_journal_access_di(handle, | |
2280 | INODE_CACHE(inode), | |
2281 | fe_bh, | |
2282 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2283 | if (status < 0) { | |
2284 | mlog_errno(status); | |
2285 | goto leave; | |
2286 | } | |
2287 | ||
ccd979bd MF |
2288 | /* we're a cluster, and nlink can change on disk from |
2289 | * underneath us... */ | |
2290 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2291 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2292 | ocfs2_add_links_count(orphan_fe, 1); |
bfe86848 | 2293 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2294 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2295 | |
2296 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
06ee5c75 | 2297 | namelen, inode, |
ccd979bd | 2298 | OCFS2_I(inode)->ip_blkno, |
4a12ca3a | 2299 | orphan_dir_bh, lookup); |
ccd979bd MF |
2300 | if (status < 0) { |
2301 | mlog_errno(status); | |
ea45466a | 2302 | goto rollback; |
3939fda4 TY |
2303 | } |
2304 | ||
06ee5c75 JQ |
2305 | if (dio) { |
2306 | /* Update flag OCFS2_DIO_ORPHANED_FL and record the orphan | |
2307 | * slot. | |
2308 | */ | |
2309 | fe->i_flags |= cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2310 | fe->i_dio_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2311 | } else { | |
2312 | fe->i_flags |= cpu_to_le32(OCFS2_ORPHANED_FL); | |
2313 | OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR; | |
ccd979bd | 2314 | |
06ee5c75 JQ |
2315 | /* Record which orphan dir our inode now resides |
2316 | * in. delete_inode will use this to determine which orphan | |
2317 | * dir to lock. */ | |
2318 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2319 | } | |
ccd979bd | 2320 | |
3939fda4 TY |
2321 | ocfs2_journal_dirty(handle, fe_bh); |
2322 | ||
8990e44a TM |
2323 | trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno, |
2324 | osb->slot_num); | |
ccd979bd | 2325 | |
ea45466a YL |
2326 | rollback: |
2327 | if (status < 0) { | |
2328 | if (S_ISDIR(inode->i_mode)) | |
2329 | ocfs2_add_links_count(orphan_fe, -1); | |
2330 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); | |
2331 | } | |
2332 | ||
ccd979bd | 2333 | leave: |
a81cb88b | 2334 | brelse(orphan_dir_bh); |
ccd979bd | 2335 | |
ccd979bd MF |
2336 | return status; |
2337 | } | |
2338 | ||
2339 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
2340 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 2341 | handle_t *handle, |
ccd979bd MF |
2342 | struct inode *orphan_dir_inode, |
2343 | struct inode *inode, | |
06ee5c75 JQ |
2344 | struct buffer_head *orphan_dir_bh, |
2345 | bool dio) | |
ccd979bd | 2346 | { |
06ee5c75 JQ |
2347 | const int namelen = OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN; |
2348 | char name[namelen + 1]; | |
ccd979bd MF |
2349 | struct ocfs2_dinode *orphan_fe; |
2350 | int status = 0; | |
4a12ca3a | 2351 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd | 2352 | |
06ee5c75 JQ |
2353 | if (dio) { |
2354 | status = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2355 | OCFS2_DIO_ORPHAN_PREFIX); | |
2356 | if (status != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2357 | status = -EINVAL; | |
2358 | mlog_errno(status); | |
2359 | return status; | |
2360 | } | |
2361 | ||
2362 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, | |
2363 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2364 | } else | |
2365 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
ccd979bd MF |
2366 | if (status < 0) { |
2367 | mlog_errno(status); | |
2368 | goto leave; | |
2369 | } | |
2370 | ||
8990e44a TM |
2371 | trace_ocfs2_orphan_del( |
2372 | (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
e38a5739 | 2373 | name, strlen(name)); |
ccd979bd | 2374 | |
074a6c65 JQ |
2375 | status = ocfs2_journal_access_di(handle, |
2376 | INODE_CACHE(orphan_dir_inode), | |
2377 | orphan_dir_bh, | |
2378 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2379 | if (status < 0) { | |
2380 | mlog_errno(status); | |
2381 | goto leave; | |
2382 | } | |
2383 | ||
ccd979bd | 2384 | /* find it's spot in the orphan directory */ |
e38a5739 | 2385 | status = ocfs2_find_entry(name, strlen(name), orphan_dir_inode, |
4a12ca3a MF |
2386 | &lookup); |
2387 | if (status) { | |
ccd979bd MF |
2388 | mlog_errno(status); |
2389 | goto leave; | |
2390 | } | |
2391 | ||
2392 | /* remove it from the orphan directory */ | |
4a12ca3a | 2393 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
2394 | if (status < 0) { |
2395 | mlog_errno(status); | |
2396 | goto leave; | |
2397 | } | |
2398 | ||
ccd979bd MF |
2399 | /* do the i_nlink dance! :) */ |
2400 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2401 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2402 | ocfs2_add_links_count(orphan_fe, -1); |
bfe86848 | 2403 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2404 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2405 | |
2406 | leave: | |
4a12ca3a | 2407 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd | 2408 | |
c1e8d35e TM |
2409 | if (status) |
2410 | mlog_errno(status); | |
ccd979bd MF |
2411 | return status; |
2412 | } | |
2413 | ||
97b8f4a9 | 2414 | /** |
25985edc | 2415 | * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to receive a newly |
97b8f4a9 MF |
2416 | * allocated file. This is different from the typical 'add to orphan dir' |
2417 | * operation in that the inode does not yet exist. This is a problem because | |
2418 | * the orphan dir stringifies the inode block number to come up with it's | |
2419 | * dirent. Obviously if the inode does not yet exist we have a chicken and egg | |
2420 | * problem. This function works around it by calling deeper into the orphan | |
2421 | * and suballoc code than other callers. Use this only by necessity. | |
2422 | * @dir: The directory which this inode will ultimately wind up under - not the | |
2423 | * orphan dir! | |
2424 | * @dir_bh: buffer_head the @dir inode block | |
2425 | * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled | |
2426 | * with the string to be used for orphan dirent. Pass back to the orphan dir | |
2427 | * code. | |
2428 | * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan | |
2429 | * dir code. | |
2430 | * @ret_di_blkno: block number where the new inode will be allocated. | |
2431 | * @orphan_insert: Dir insert context to be passed back into orphan dir code. | |
2432 | * @ret_inode_ac: Inode alloc context to be passed back to the allocator. | |
2433 | * | |
2434 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2435 | * fields will be populated. | |
2436 | * | |
2437 | * Returns non-zero on failure. | |
2438 | */ | |
2439 | static int ocfs2_prep_new_orphaned_file(struct inode *dir, | |
2440 | struct buffer_head *dir_bh, | |
2441 | char *orphan_name, | |
2442 | struct inode **ret_orphan_dir, | |
2443 | u64 *ret_di_blkno, | |
2444 | struct ocfs2_dir_lookup_result *orphan_insert, | |
2445 | struct ocfs2_alloc_context **ret_inode_ac) | |
2446 | { | |
2447 | int ret; | |
2448 | u64 di_blkno; | |
2449 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2450 | struct inode *orphan_dir = NULL; | |
2451 | struct buffer_head *orphan_dir_bh = NULL; | |
2452 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2453 | ||
2454 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh); | |
2455 | if (ret < 0) { | |
2456 | mlog_errno(ret); | |
2457 | return ret; | |
2458 | } | |
2459 | ||
2460 | /* reserve an inode spot */ | |
2461 | ret = ocfs2_reserve_new_inode(osb, &inode_ac); | |
2462 | if (ret < 0) { | |
2463 | if (ret != -ENOSPC) | |
2464 | mlog_errno(ret); | |
2465 | goto out; | |
2466 | } | |
2467 | ||
2468 | ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac, | |
2469 | &di_blkno); | |
2470 | if (ret) { | |
2471 | mlog_errno(ret); | |
2472 | goto out; | |
2473 | } | |
2474 | ||
2475 | ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh, | |
06ee5c75 JQ |
2476 | di_blkno, orphan_name, orphan_insert, |
2477 | false); | |
97b8f4a9 MF |
2478 | if (ret < 0) { |
2479 | mlog_errno(ret); | |
2480 | goto out; | |
2481 | } | |
2482 | ||
2483 | out: | |
2484 | if (ret == 0) { | |
2485 | *ret_orphan_dir = orphan_dir; | |
2486 | *ret_di_blkno = di_blkno; | |
2487 | *ret_inode_ac = inode_ac; | |
2488 | /* | |
2489 | * orphan_name and orphan_insert are already up to | |
2490 | * date via prepare_orphan_dir | |
2491 | */ | |
2492 | } else { | |
2493 | /* Unroll reserve_new_inode* */ | |
2494 | if (inode_ac) | |
2495 | ocfs2_free_alloc_context(inode_ac); | |
2496 | ||
2497 | /* Unroll orphan dir locking */ | |
5955102c | 2498 | inode_unlock(orphan_dir); |
97b8f4a9 MF |
2499 | ocfs2_inode_unlock(orphan_dir, 1); |
2500 | iput(orphan_dir); | |
2501 | } | |
2502 | ||
2503 | brelse(orphan_dir_bh); | |
2504 | ||
7869e590 | 2505 | return ret; |
97b8f4a9 MF |
2506 | } |
2507 | ||
bc13d347 TM |
2508 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
2509 | int mode, | |
2510 | struct inode **new_inode) | |
2511 | { | |
2512 | int status, did_quota_inode = 0; | |
2513 | struct inode *inode = NULL; | |
2514 | struct inode *orphan_dir = NULL; | |
2515 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2516 | struct ocfs2_dinode *di = NULL; | |
2517 | handle_t *handle = NULL; | |
2518 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2519 | struct buffer_head *parent_di_bh = NULL; | |
2520 | struct buffer_head *new_di_bh = NULL; | |
2521 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2522 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
97b8f4a9 MF |
2523 | u64 uninitialized_var(di_blkno), suballoc_loc; |
2524 | u16 suballoc_bit; | |
bc13d347 TM |
2525 | |
2526 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2527 | if (status < 0) { | |
2528 | if (status != -ENOENT) | |
2529 | mlog_errno(status); | |
2530 | return status; | |
2531 | } | |
2532 | ||
97b8f4a9 MF |
2533 | status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh, |
2534 | orphan_name, &orphan_dir, | |
2535 | &di_blkno, &orphan_insert, &inode_ac); | |
bc13d347 TM |
2536 | if (status < 0) { |
2537 | if (status != -ENOSPC) | |
2538 | mlog_errno(status); | |
2539 | goto leave; | |
2540 | } | |
2541 | ||
2542 | inode = ocfs2_get_init_inode(dir, mode); | |
9c89fe0a JK |
2543 | if (IS_ERR(inode)) { |
2544 | status = PTR_ERR(inode); | |
2545 | inode = NULL; | |
bc13d347 TM |
2546 | mlog_errno(status); |
2547 | goto leave; | |
2548 | } | |
2549 | ||
2550 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); | |
2551 | if (IS_ERR(handle)) { | |
2552 | status = PTR_ERR(handle); | |
2553 | handle = NULL; | |
2554 | mlog_errno(status); | |
2555 | goto leave; | |
2556 | } | |
2557 | ||
63936dda CH |
2558 | status = dquot_alloc_inode(inode); |
2559 | if (status) | |
bc13d347 | 2560 | goto leave; |
bc13d347 TM |
2561 | did_quota_inode = 1; |
2562 | ||
97b8f4a9 MF |
2563 | status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac, |
2564 | &suballoc_loc, | |
2565 | &suballoc_bit, di_blkno); | |
bc13d347 TM |
2566 | if (status < 0) { |
2567 | mlog_errno(status); | |
2568 | goto leave; | |
2569 | } | |
2570 | ||
6d6b77f1 | 2571 | clear_nlink(inode); |
97b8f4a9 MF |
2572 | /* do the real work now. */ |
2573 | status = __ocfs2_mknod_locked(dir, inode, | |
2574 | 0, &new_di_bh, parent_di_bh, handle, | |
2575 | inode_ac, di_blkno, suballoc_loc, | |
2576 | suballoc_bit); | |
bc13d347 TM |
2577 | if (status < 0) { |
2578 | mlog_errno(status); | |
2579 | goto leave; | |
2580 | } | |
2581 | ||
2582 | di = (struct ocfs2_dinode *)new_di_bh->b_data; | |
3939fda4 | 2583 | status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name, |
06ee5c75 | 2584 | &orphan_insert, orphan_dir, false); |
bc13d347 TM |
2585 | if (status < 0) { |
2586 | mlog_errno(status); | |
2587 | goto leave; | |
2588 | } | |
2589 | ||
2590 | /* get open lock so that only nodes can't remove it from orphan dir. */ | |
2591 | status = ocfs2_open_lock(inode); | |
2592 | if (status < 0) | |
2593 | mlog_errno(status); | |
2594 | ||
c7d260af | 2595 | insert_inode_hash(inode); |
bc13d347 TM |
2596 | leave: |
2597 | if (status < 0 && did_quota_inode) | |
63936dda | 2598 | dquot_free_inode(inode); |
bc13d347 TM |
2599 | if (handle) |
2600 | ocfs2_commit_trans(osb, handle); | |
2601 | ||
2602 | if (orphan_dir) { | |
2603 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
2604 | ocfs2_inode_unlock(orphan_dir, 1); | |
5955102c | 2605 | inode_unlock(orphan_dir); |
bc13d347 TM |
2606 | iput(orphan_dir); |
2607 | } | |
2608 | ||
bc13d347 TM |
2609 | if ((status < 0) && inode) { |
2610 | clear_nlink(inode); | |
2611 | iput(inode); | |
2612 | } | |
2613 | ||
2614 | if (inode_ac) | |
2615 | ocfs2_free_alloc_context(inode_ac); | |
2616 | ||
2617 | brelse(new_di_bh); | |
2618 | ||
2619 | if (!status) | |
2620 | *new_inode = inode; | |
2621 | ||
2622 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2623 | ||
2624 | ocfs2_inode_unlock(dir, 1); | |
2625 | brelse(parent_di_bh); | |
2626 | return status; | |
2627 | } | |
2628 | ||
06ee5c75 JQ |
2629 | int ocfs2_add_inode_to_orphan(struct ocfs2_super *osb, |
2630 | struct inode *inode) | |
2631 | { | |
2632 | char orphan_name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1]; | |
2633 | struct inode *orphan_dir_inode = NULL; | |
2634 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
2635 | struct buffer_head *di_bh = NULL; | |
2636 | int status = 0; | |
2637 | handle_t *handle = NULL; | |
4813962b | 2638 | struct ocfs2_dinode *di = NULL; |
06ee5c75 JQ |
2639 | |
2640 | status = ocfs2_inode_lock(inode, &di_bh, 1); | |
2641 | if (status < 0) { | |
2642 | mlog_errno(status); | |
2643 | goto bail; | |
2644 | } | |
2645 | ||
4813962b JQ |
2646 | di = (struct ocfs2_dinode *) di_bh->b_data; |
2647 | /* | |
2648 | * Another append dio crashed? | |
512f62ac | 2649 | * If so, manually recover it first. |
4813962b JQ |
2650 | */ |
2651 | if (unlikely(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))) { | |
512f62ac JQ |
2652 | status = ocfs2_truncate_file(inode, di_bh, i_size_read(inode)); |
2653 | if (status < 0) { | |
2654 | if (status != -ENOSPC) | |
2655 | mlog_errno(status); | |
2656 | goto bail_unlock_inode; | |
2657 | } | |
2658 | ||
2659 | status = ocfs2_del_inode_from_orphan(osb, inode, di_bh, 0, 0); | |
2660 | if (status < 0) { | |
2661 | mlog_errno(status); | |
2662 | goto bail_unlock_inode; | |
2663 | } | |
4813962b JQ |
2664 | } |
2665 | ||
06ee5c75 JQ |
2666 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir_inode, |
2667 | OCFS2_I(inode)->ip_blkno, | |
2668 | orphan_name, | |
2669 | &orphan_insert, | |
2670 | true); | |
2671 | if (status < 0) { | |
2672 | mlog_errno(status); | |
2673 | goto bail_unlock_inode; | |
2674 | } | |
2675 | ||
2676 | handle = ocfs2_start_trans(osb, | |
2677 | OCFS2_INODE_ADD_TO_ORPHAN_CREDITS); | |
2678 | if (IS_ERR(handle)) { | |
2679 | status = PTR_ERR(handle); | |
2680 | goto bail_unlock_orphan; | |
2681 | } | |
2682 | ||
2683 | status = ocfs2_orphan_add(osb, handle, inode, di_bh, orphan_name, | |
2684 | &orphan_insert, orphan_dir_inode, true); | |
2685 | if (status) | |
2686 | mlog_errno(status); | |
2687 | ||
2688 | ocfs2_commit_trans(osb, handle); | |
2689 | ||
2690 | bail_unlock_orphan: | |
2691 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2692 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2693 | iput(orphan_dir_inode); |
2694 | ||
2695 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2696 | ||
2697 | bail_unlock_inode: | |
2698 | ocfs2_inode_unlock(inode, 1); | |
2699 | brelse(di_bh); | |
2700 | ||
2701 | bail: | |
2702 | return status; | |
2703 | } | |
2704 | ||
2705 | int ocfs2_del_inode_from_orphan(struct ocfs2_super *osb, | |
cf1776a9 JQ |
2706 | struct inode *inode, struct buffer_head *di_bh, |
2707 | int update_isize, loff_t end) | |
06ee5c75 JQ |
2708 | { |
2709 | struct inode *orphan_dir_inode = NULL; | |
2710 | struct buffer_head *orphan_dir_bh = NULL; | |
cf1776a9 | 2711 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data; |
06ee5c75 JQ |
2712 | handle_t *handle = NULL; |
2713 | int status = 0; | |
2714 | ||
06ee5c75 JQ |
2715 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
2716 | ORPHAN_DIR_SYSTEM_INODE, | |
2717 | le16_to_cpu(di->i_dio_orphaned_slot)); | |
2718 | if (!orphan_dir_inode) { | |
2719 | status = -ENOENT; | |
2720 | mlog_errno(status); | |
cf1776a9 | 2721 | goto bail; |
06ee5c75 JQ |
2722 | } |
2723 | ||
5955102c | 2724 | inode_lock(orphan_dir_inode); |
06ee5c75 JQ |
2725 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2726 | if (status < 0) { | |
5955102c | 2727 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2728 | iput(orphan_dir_inode); |
2729 | mlog_errno(status); | |
cf1776a9 | 2730 | goto bail; |
06ee5c75 JQ |
2731 | } |
2732 | ||
2733 | handle = ocfs2_start_trans(osb, | |
2734 | OCFS2_INODE_DEL_FROM_ORPHAN_CREDITS); | |
2735 | if (IS_ERR(handle)) { | |
2736 | status = PTR_ERR(handle); | |
2737 | goto bail_unlock_orphan; | |
2738 | } | |
2739 | ||
2740 | BUG_ON(!(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))); | |
2741 | ||
2742 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, | |
2743 | inode, orphan_dir_bh, true); | |
2744 | if (status < 0) { | |
2745 | mlog_errno(status); | |
2746 | goto bail_commit; | |
2747 | } | |
2748 | ||
2749 | status = ocfs2_journal_access_di(handle, | |
2750 | INODE_CACHE(inode), | |
2751 | di_bh, | |
2752 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2753 | if (status < 0) { | |
2754 | mlog_errno(status); | |
2755 | goto bail_commit; | |
2756 | } | |
2757 | ||
2758 | di->i_flags &= ~cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2759 | di->i_dio_orphaned_slot = 0; | |
2760 | ||
2761 | if (update_isize) { | |
2762 | status = ocfs2_set_inode_size(handle, inode, di_bh, end); | |
2763 | if (status) | |
2764 | mlog_errno(status); | |
2765 | } else | |
2766 | ocfs2_journal_dirty(handle, di_bh); | |
2767 | ||
2768 | bail_commit: | |
2769 | ocfs2_commit_trans(osb, handle); | |
2770 | ||
2771 | bail_unlock_orphan: | |
2772 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2773 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2774 | brelse(orphan_dir_bh); |
2775 | iput(orphan_dir_inode); | |
2776 | ||
06ee5c75 JQ |
2777 | bail: |
2778 | return status; | |
2779 | } | |
2780 | ||
bc13d347 TM |
2781 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, |
2782 | struct inode *inode, | |
2783 | struct dentry *dentry) | |
2784 | { | |
2785 | int status = 0; | |
2786 | struct buffer_head *parent_di_bh = NULL; | |
2787 | handle_t *handle = NULL; | |
2788 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2789 | struct ocfs2_dinode *dir_di, *di; | |
2790 | struct inode *orphan_dir_inode = NULL; | |
2791 | struct buffer_head *orphan_dir_bh = NULL; | |
2792 | struct buffer_head *di_bh = NULL; | |
2793 | struct ocfs2_dir_lookup_result lookup = { NULL, }; | |
2794 | ||
8990e44a TM |
2795 | trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry, |
2796 | dentry->d_name.len, dentry->d_name.name, | |
2797 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
2798 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
bc13d347 TM |
2799 | |
2800 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2801 | if (status < 0) { | |
2802 | if (status != -ENOENT) | |
2803 | mlog_errno(status); | |
2804 | return status; | |
2805 | } | |
2806 | ||
2807 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; | |
2808 | if (!dir_di->i_links_count) { | |
2809 | /* can't make a file in a deleted directory. */ | |
2810 | status = -ENOENT; | |
2811 | goto leave; | |
2812 | } | |
2813 | ||
2814 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
2815 | dentry->d_name.len); | |
2816 | if (status) | |
2817 | goto leave; | |
2818 | ||
2819 | /* get a spot inside the dir. */ | |
2820 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, | |
2821 | dentry->d_name.name, | |
2822 | dentry->d_name.len, &lookup); | |
2823 | if (status < 0) { | |
2824 | mlog_errno(status); | |
2825 | goto leave; | |
2826 | } | |
2827 | ||
2828 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2829 | ORPHAN_DIR_SYSTEM_INODE, | |
2830 | osb->slot_num); | |
2831 | if (!orphan_dir_inode) { | |
62f8b1f0 | 2832 | status = -ENOENT; |
bc13d347 TM |
2833 | mlog_errno(status); |
2834 | goto leave; | |
2835 | } | |
2836 | ||
5955102c | 2837 | inode_lock(orphan_dir_inode); |
bc13d347 TM |
2838 | |
2839 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2840 | if (status < 0) { | |
2841 | mlog_errno(status); | |
5955102c | 2842 | inode_unlock(orphan_dir_inode); |
bc13d347 TM |
2843 | iput(orphan_dir_inode); |
2844 | goto leave; | |
2845 | } | |
2846 | ||
2847 | status = ocfs2_read_inode_block(inode, &di_bh); | |
2848 | if (status < 0) { | |
2849 | mlog_errno(status); | |
2850 | goto orphan_unlock; | |
2851 | } | |
2852 | ||
2853 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); | |
2854 | if (IS_ERR(handle)) { | |
2855 | status = PTR_ERR(handle); | |
2856 | handle = NULL; | |
2857 | mlog_errno(status); | |
2858 | goto orphan_unlock; | |
2859 | } | |
2860 | ||
2861 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), | |
2862 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2863 | if (status < 0) { | |
2864 | mlog_errno(status); | |
2865 | goto out_commit; | |
2866 | } | |
2867 | ||
2868 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
06ee5c75 | 2869 | orphan_dir_bh, false); |
bc13d347 TM |
2870 | if (status < 0) { |
2871 | mlog_errno(status); | |
2872 | goto out_commit; | |
2873 | } | |
2874 | ||
2875 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
13eb9887 | 2876 | di->i_flags &= ~cpu_to_le32(OCFS2_ORPHANED_FL); |
bc13d347 | 2877 | di->i_orphaned_slot = 0; |
bfe86848 | 2878 | set_nlink(inode, 1); |
10cf1a02 | 2879 | ocfs2_set_links_count(di, inode->i_nlink); |
6fdb702d | 2880 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
bc13d347 TM |
2881 | ocfs2_journal_dirty(handle, di_bh); |
2882 | ||
2883 | status = ocfs2_add_entry(handle, dentry, inode, | |
2884 | OCFS2_I(inode)->ip_blkno, parent_di_bh, | |
2885 | &lookup); | |
2886 | if (status < 0) { | |
2887 | mlog_errno(status); | |
2888 | goto out_commit; | |
2889 | } | |
2890 | ||
2891 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
2892 | OCFS2_I(dir)->ip_blkno); | |
2893 | if (status) { | |
2894 | mlog_errno(status); | |
2895 | goto out_commit; | |
2896 | } | |
2897 | ||
bc13d347 TM |
2898 | d_instantiate(dentry, inode); |
2899 | status = 0; | |
2900 | out_commit: | |
2901 | ocfs2_commit_trans(osb, handle); | |
2902 | orphan_unlock: | |
2903 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2904 | inode_unlock(orphan_dir_inode); |
bc13d347 TM |
2905 | iput(orphan_dir_inode); |
2906 | leave: | |
2907 | ||
2908 | ocfs2_inode_unlock(dir, 1); | |
2909 | ||
2910 | brelse(di_bh); | |
2911 | brelse(parent_di_bh); | |
2912 | brelse(orphan_dir_bh); | |
2913 | ||
2914 | ocfs2_free_dir_lookup_result(&lookup); | |
2915 | ||
c1e8d35e TM |
2916 | if (status) |
2917 | mlog_errno(status); | |
bc13d347 TM |
2918 | |
2919 | return status; | |
2920 | } | |
2921 | ||
92e1d5be | 2922 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2923 | .create = ocfs2_create, |
2924 | .lookup = ocfs2_lookup, | |
2925 | .link = ocfs2_link, | |
2926 | .unlink = ocfs2_unlink, | |
2927 | .rmdir = ocfs2_unlink, | |
2928 | .symlink = ocfs2_symlink, | |
2929 | .mkdir = ocfs2_mkdir, | |
2930 | .mknod = ocfs2_mknod, | |
2931 | .rename = ocfs2_rename, | |
2932 | .setattr = ocfs2_setattr, | |
2933 | .getattr = ocfs2_getattr, | |
d38eb8db | 2934 | .permission = ocfs2_permission, |
cf1d6c76 TY |
2935 | .setxattr = generic_setxattr, |
2936 | .getxattr = generic_getxattr, | |
2937 | .listxattr = ocfs2_listxattr, | |
2938 | .removexattr = generic_removexattr, | |
55f4946e | 2939 | .fiemap = ocfs2_fiemap, |
4e34e719 | 2940 | .get_acl = ocfs2_iop_get_acl, |
702e5bc6 | 2941 | .set_acl = ocfs2_iop_set_acl, |
ccd979bd | 2942 | }; |