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ccd979bd MF |
1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * namei.c | |
5 | * | |
6 | * Create and rename file, directory, symlinks | |
7 | * | |
8 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
9 | * | |
10 | * Portions of this code from linux/fs/ext3/dir.c | |
11 | * | |
12 | * Copyright (C) 1992, 1993, 1994, 1995 | |
13 | * Remy Card (card@masi.ibp.fr) | |
14 | * Laboratoire MASI - Institut Blaise pascal | |
15 | * Universite Pierre et Marie Curie (Paris VI) | |
16 | * | |
17 | * from | |
18 | * | |
19 | * linux/fs/minix/dir.c | |
20 | * | |
21 | * Copyright (C) 1991, 1992 Linux Torvalds | |
22 | * | |
23 | * This program is free software; you can redistribute it and/or | |
24 | * modify it under the terms of the GNU General Public | |
25 | * License as published by the Free Software Foundation; either | |
26 | * version 2 of the License, or (at your option) any later version. | |
27 | * | |
28 | * This program is distributed in the hope that it will be useful, | |
29 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
30 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
31 | * General Public License for more details. | |
32 | * | |
33 | * You should have received a copy of the GNU General Public | |
34 | * License along with this program; if not, write to the | |
35 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
36 | * Boston, MA 021110-1307, USA. | |
37 | */ | |
38 | ||
39 | #include <linux/fs.h> | |
40 | #include <linux/types.h> | |
41 | #include <linux/slab.h> | |
42 | #include <linux/highmem.h> | |
a90714c1 | 43 | #include <linux/quotaops.h> |
ccd979bd | 44 | |
ccd979bd MF |
45 | #include <cluster/masklog.h> |
46 | ||
47 | #include "ocfs2.h" | |
48 | ||
49 | #include "alloc.h" | |
50 | #include "dcache.h" | |
51 | #include "dir.h" | |
52 | #include "dlmglue.h" | |
53 | #include "extent_map.h" | |
54 | #include "file.h" | |
55 | #include "inode.h" | |
56 | #include "journal.h" | |
57 | #include "namei.h" | |
58 | #include "suballoc.h" | |
aa958874 | 59 | #include "super.h" |
ccd979bd MF |
60 | #include "symlink.h" |
61 | #include "sysfile.h" | |
62 | #include "uptodate.h" | |
cf1d6c76 | 63 | #include "xattr.h" |
89c38bd0 | 64 | #include "acl.h" |
8990e44a | 65 | #include "ocfs2_trace.h" |
ccd979bd MF |
66 | |
67 | #include "buffer_head_io.h" | |
68 | ||
ccd979bd MF |
69 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
70 | struct inode *dir, | |
f5d36202 | 71 | struct inode *inode, |
ccd979bd MF |
72 | dev_t dev, |
73 | struct buffer_head **new_fe_bh, | |
74 | struct buffer_head *parent_fe_bh, | |
1fabe148 | 75 | handle_t *handle, |
ccd979bd MF |
76 | struct ocfs2_alloc_context *inode_ac); |
77 | ||
ccd979bd | 78 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, |
5098c27b | 79 | struct inode **ret_orphan_dir, |
19bd341f | 80 | u64 blkno, |
ccd979bd | 81 | char *name, |
06ee5c75 JQ |
82 | struct ocfs2_dir_lookup_result *lookup, |
83 | bool dio); | |
ccd979bd MF |
84 | |
85 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 86 | handle_t *handle, |
ccd979bd | 87 | struct inode *inode, |
3939fda4 | 88 | struct buffer_head *fe_bh, |
ccd979bd | 89 | char *name, |
4a12ca3a | 90 | struct ocfs2_dir_lookup_result *lookup, |
06ee5c75 JQ |
91 | struct inode *orphan_dir_inode, |
92 | bool dio); | |
ccd979bd MF |
93 | |
94 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 95 | handle_t *handle, |
ccd979bd MF |
96 | struct inode *inode, |
97 | const char *symname); | |
98 | ||
53dc20b9 X |
99 | static int ocfs2_double_lock(struct ocfs2_super *osb, |
100 | struct buffer_head **bh1, | |
101 | struct inode *inode1, | |
102 | struct buffer_head **bh2, | |
103 | struct inode *inode2, | |
104 | int rename); | |
105 | ||
106 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2); | |
ccd979bd MF |
107 | /* An orphan dir name is an 8 byte value, printed as a hex string */ |
108 | #define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64))) | |
109 | ||
110 | static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry, | |
00cd8dd3 | 111 | unsigned int flags) |
ccd979bd MF |
112 | { |
113 | int status; | |
114 | u64 blkno; | |
ccd979bd MF |
115 | struct inode *inode = NULL; |
116 | struct dentry *ret; | |
ccd979bd MF |
117 | struct ocfs2_inode_info *oi; |
118 | ||
8990e44a TM |
119 | trace_ocfs2_lookup(dir, dentry, dentry->d_name.len, |
120 | dentry->d_name.name, | |
121 | (unsigned long long)OCFS2_I(dir)->ip_blkno, 0); | |
ccd979bd MF |
122 | |
123 | if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) { | |
124 | ret = ERR_PTR(-ENAMETOOLONG); | |
125 | goto bail; | |
126 | } | |
127 | ||
cb25797d | 128 | status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT); |
ccd979bd MF |
129 | if (status < 0) { |
130 | if (status != -ENOENT) | |
131 | mlog_errno(status); | |
132 | ret = ERR_PTR(status); | |
133 | goto bail; | |
134 | } | |
135 | ||
be94d117 MF |
136 | status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name, |
137 | dentry->d_name.len, &blkno); | |
ccd979bd MF |
138 | if (status < 0) |
139 | goto bail_add; | |
140 | ||
5fa0613e | 141 | inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0); |
ccd979bd | 142 | if (IS_ERR(inode)) { |
ccd979bd MF |
143 | ret = ERR_PTR(-EACCES); |
144 | goto bail_unlock; | |
145 | } | |
146 | ||
147 | oi = OCFS2_I(inode); | |
148 | /* Clear any orphaned state... If we were able to look up the | |
149 | * inode from a directory, it certainly can't be orphaned. We | |
150 | * might have the bad state from a node which intended to | |
151 | * orphan this inode but crashed before it could commit the | |
152 | * unlink. */ | |
153 | spin_lock(&oi->ip_lock); | |
154 | oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED; | |
ccd979bd MF |
155 | spin_unlock(&oi->ip_lock); |
156 | ||
157 | bail_add: | |
ccd979bd MF |
158 | ret = d_splice_alias(inode, dentry); |
159 | ||
379dfe9d MF |
160 | if (inode) { |
161 | /* | |
162 | * If d_splice_alias() finds a DCACHE_DISCONNECTED | |
163 | * dentry, it will d_move() it on top of ourse. The | |
164 | * return value will indicate this however, so in | |
165 | * those cases, we switch them around for the locking | |
166 | * code. | |
167 | * | |
168 | * NOTE: This dentry already has ->d_op set from | |
169 | * ocfs2_get_parent() and ocfs2_get_dentry() | |
170 | */ | |
d3556bab | 171 | if (!IS_ERR_OR_NULL(ret)) |
379dfe9d MF |
172 | dentry = ret; |
173 | ||
174 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
0027dd5b | 175 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
176 | if (status) { |
177 | mlog_errno(status); | |
178 | ret = ERR_PTR(status); | |
179 | goto bail_unlock; | |
180 | } | |
5e98d492 GR |
181 | } else |
182 | ocfs2_dentry_attach_gen(dentry); | |
379dfe9d | 183 | |
ccd979bd MF |
184 | bail_unlock: |
185 | /* Don't drop the cluster lock until *after* the d_add -- | |
186 | * unlink on another node will message us to remove that | |
187 | * dentry under this lock so otherwise we can race this with | |
34d024f8 | 188 | * the downconvert thread and have a stale dentry. */ |
e63aecb6 | 189 | ocfs2_inode_unlock(dir, 0); |
ccd979bd MF |
190 | |
191 | bail: | |
ccd979bd | 192 | |
8990e44a | 193 | trace_ocfs2_lookup_ret(ret); |
ccd979bd MF |
194 | |
195 | return ret; | |
196 | } | |
197 | ||
67697cbd | 198 | static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode) |
f5d36202 TY |
199 | { |
200 | struct inode *inode; | |
9c89fe0a | 201 | int status; |
f5d36202 TY |
202 | |
203 | inode = new_inode(dir->i_sb); | |
204 | if (!inode) { | |
205 | mlog(ML_ERROR, "new_inode failed!\n"); | |
9c89fe0a | 206 | return ERR_PTR(-ENOMEM); |
f5d36202 TY |
207 | } |
208 | ||
209 | /* populate as many fields early on as possible - many of | |
210 | * these are used by the support functions here and in | |
211 | * callers. */ | |
212 | if (S_ISDIR(mode)) | |
bfe86848 | 213 | set_nlink(inode, 2); |
75fe0a24 | 214 | inode_init_owner(inode, dir, mode); |
9c89fe0a JK |
215 | status = dquot_initialize(inode); |
216 | if (status) | |
217 | return ERR_PTR(status); | |
218 | ||
f5d36202 TY |
219 | return inode; |
220 | } | |
221 | ||
595297a8 | 222 | static void ocfs2_cleanup_add_entry_failure(struct ocfs2_super *osb, |
223 | struct dentry *dentry, struct inode *inode) | |
224 | { | |
225 | struct ocfs2_dentry_lock *dl = dentry->d_fsdata; | |
226 | ||
227 | ocfs2_simple_drop_lockres(osb, &dl->dl_lockres); | |
228 | ocfs2_lock_res_free(&dl->dl_lockres); | |
229 | BUG_ON(dl->dl_count != 1); | |
230 | spin_lock(&dentry_attach_lock); | |
231 | dentry->d_fsdata = NULL; | |
232 | spin_unlock(&dentry_attach_lock); | |
233 | kfree(dl); | |
234 | iput(inode); | |
235 | } | |
236 | ||
ccd979bd MF |
237 | static int ocfs2_mknod(struct inode *dir, |
238 | struct dentry *dentry, | |
1a67aafb | 239 | umode_t mode, |
ccd979bd MF |
240 | dev_t dev) |
241 | { | |
242 | int status = 0; | |
243 | struct buffer_head *parent_fe_bh = NULL; | |
1fabe148 | 244 | handle_t *handle = NULL; |
ccd979bd MF |
245 | struct ocfs2_super *osb; |
246 | struct ocfs2_dinode *dirfe; | |
247 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
248 | struct inode *inode = NULL; |
249 | struct ocfs2_alloc_context *inode_ac = NULL; | |
250 | struct ocfs2_alloc_context *data_ac = NULL; | |
9b7895ef | 251 | struct ocfs2_alloc_context *meta_ac = NULL; |
534eaddd | 252 | int want_clusters = 0; |
9b7895ef | 253 | int want_meta = 0; |
534eaddd TY |
254 | int xattr_credits = 0; |
255 | struct ocfs2_security_xattr_info si = { | |
256 | .enable = 1, | |
257 | }; | |
a90714c1 | 258 | int did_quota_inode = 0; |
4a12ca3a | 259 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
260 | sigset_t oldset; |
261 | int did_block_signals = 0; | |
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 | ||
702e5bc6 CH |
370 | status = posix_acl_create(dir, &mode, &default_acl, &acl); |
371 | if (status) { | |
372 | mlog_errno(status); | |
373 | goto leave; | |
374 | } | |
8f1eb487 JB |
375 | /* update inode->i_mode after mask with "umask". */ |
376 | inode->i_mode = mode; | |
702e5bc6 | 377 | |
9b7895ef MF |
378 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, |
379 | S_ISDIR(mode), | |
380 | xattr_credits)); | |
ccd979bd MF |
381 | if (IS_ERR(handle)) { |
382 | status = PTR_ERR(handle); | |
383 | handle = NULL; | |
384 | mlog_errno(status); | |
385 | goto leave; | |
386 | } | |
387 | ||
547ba7c8 JB |
388 | /* Starting to change things, restart is no longer possible. */ |
389 | ocfs2_block_signals(&oldset); | |
390 | did_block_signals = 1; | |
391 | ||
63936dda CH |
392 | status = dquot_alloc_inode(inode); |
393 | if (status) | |
a90714c1 | 394 | goto leave; |
a90714c1 JK |
395 | did_quota_inode = 1; |
396 | ||
ccd979bd | 397 | /* do the real work now. */ |
19bd341f | 398 | status = ocfs2_mknod_locked(osb, dir, inode, dev, |
ccd979bd | 399 | &new_fe_bh, parent_fe_bh, handle, |
f5d36202 | 400 | inode_ac); |
ccd979bd MF |
401 | if (status < 0) { |
402 | mlog_errno(status); | |
403 | goto leave; | |
404 | } | |
405 | ||
406 | if (S_ISDIR(mode)) { | |
407 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, | |
9b7895ef | 408 | new_fe_bh, data_ac, meta_ac); |
ccd979bd MF |
409 | if (status < 0) { |
410 | mlog_errno(status); | |
411 | goto leave; | |
412 | } | |
413 | ||
0cf2f763 JB |
414 | status = ocfs2_journal_access_di(handle, INODE_CACHE(dir), |
415 | parent_fe_bh, | |
13723d00 | 416 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
417 | if (status < 0) { |
418 | mlog_errno(status); | |
419 | goto leave; | |
420 | } | |
198a1ca3 | 421 | ocfs2_add_links_count(dirfe, 1); |
ec20cec7 | 422 | ocfs2_journal_dirty(handle, parent_fe_bh); |
d8c76e6f | 423 | inc_nlink(dir); |
ccd979bd MF |
424 | } |
425 | ||
702e5bc6 CH |
426 | if (default_acl) { |
427 | status = ocfs2_set_acl(handle, inode, new_fe_bh, | |
428 | ACL_TYPE_DEFAULT, default_acl, | |
429 | meta_ac, data_ac); | |
430 | } | |
431 | if (!status && acl) { | |
432 | status = ocfs2_set_acl(handle, inode, new_fe_bh, | |
433 | ACL_TYPE_ACCESS, acl, | |
434 | meta_ac, data_ac); | |
435 | } | |
436 | ||
89c38bd0 TY |
437 | if (status < 0) { |
438 | mlog_errno(status); | |
439 | goto leave; | |
440 | } | |
441 | ||
534eaddd TY |
442 | if (si.enable) { |
443 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
9b7895ef | 444 | meta_ac, data_ac); |
534eaddd TY |
445 | if (status < 0) { |
446 | mlog_errno(status); | |
447 | goto leave; | |
448 | } | |
449 | } | |
450 | ||
a9743fcd MF |
451 | /* |
452 | * Do this before adding the entry to the directory. We add | |
453 | * also set d_op after success so that ->d_iput() will cleanup | |
454 | * the dentry lock even if ocfs2_add_entry() fails below. | |
455 | */ | |
456 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
457 | OCFS2_I(dir)->ip_blkno); | |
458 | if (status) { | |
ccd979bd MF |
459 | mlog_errno(status); |
460 | goto leave; | |
461 | } | |
462 | ||
595297a8 | 463 | dl = dentry->d_fsdata; |
464 | ||
a9743fcd MF |
465 | status = ocfs2_add_entry(handle, dentry, inode, |
466 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
467 | &lookup); | |
468 | if (status < 0) { | |
379dfe9d MF |
469 | mlog_errno(status); |
470 | goto leave; | |
471 | } | |
472 | ||
ccd979bd | 473 | insert_inode_hash(inode); |
ccd979bd MF |
474 | d_instantiate(dentry, inode); |
475 | status = 0; | |
476 | leave: | |
702e5bc6 CH |
477 | if (default_acl) |
478 | posix_acl_release(default_acl); | |
479 | if (acl) | |
480 | posix_acl_release(acl); | |
a90714c1 | 481 | if (status < 0 && did_quota_inode) |
63936dda | 482 | dquot_free_inode(inode); |
ccd979bd | 483 | if (handle) |
02dc1af4 | 484 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 485 | |
e63aecb6 | 486 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
487 | if (did_block_signals) |
488 | ocfs2_unblock_signals(&oldset); | |
e3a82138 | 489 | |
a81cb88b | 490 | brelse(new_fe_bh); |
a81cb88b | 491 | brelse(parent_fe_bh); |
534eaddd | 492 | kfree(si.value); |
ccd979bd | 493 | |
4a12ca3a MF |
494 | ocfs2_free_dir_lookup_result(&lookup); |
495 | ||
ccd979bd MF |
496 | if (inode_ac) |
497 | ocfs2_free_alloc_context(inode_ac); | |
498 | ||
499 | if (data_ac) | |
500 | ocfs2_free_alloc_context(data_ac); | |
501 | ||
9b7895ef MF |
502 | if (meta_ac) |
503 | ocfs2_free_alloc_context(meta_ac); | |
534eaddd | 504 | |
062d3403 LD |
505 | /* |
506 | * We should call iput after the i_mutex of the bitmap been | |
507 | * unlocked in ocfs2_free_alloc_context, or the | |
508 | * ocfs2_delete_inode will mutex_lock again. | |
509 | */ | |
510 | if ((status < 0) && inode) { | |
595297a8 | 511 | if (dl) |
512 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
513 | ||
062d3403 LD |
514 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
515 | clear_nlink(inode); | |
516 | iput(inode); | |
517 | } | |
518 | ||
c1e8d35e TM |
519 | if (status) |
520 | mlog_errno(status); | |
ccd979bd MF |
521 | |
522 | return status; | |
523 | } | |
524 | ||
021960ca MF |
525 | static int __ocfs2_mknod_locked(struct inode *dir, |
526 | struct inode *inode, | |
527 | dev_t dev, | |
528 | struct buffer_head **new_fe_bh, | |
529 | struct buffer_head *parent_fe_bh, | |
530 | handle_t *handle, | |
531 | struct ocfs2_alloc_context *inode_ac, | |
532 | u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit) | |
ccd979bd MF |
533 | { |
534 | int status = 0; | |
021960ca | 535 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
ccd979bd MF |
536 | struct ocfs2_dinode *fe = NULL; |
537 | struct ocfs2_extent_list *fel; | |
9b7895ef | 538 | u16 feat; |
2931cdcb | 539 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
ccd979bd | 540 | |
ccd979bd | 541 | *new_fe_bh = NULL; |
ccd979bd | 542 | |
ccd979bd MF |
543 | /* populate as many fields early on as possible - many of |
544 | * these are used by the support functions here and in | |
545 | * callers. */ | |
546 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
547 | OCFS2_I(inode)->ip_blkno = fe_blkno; | |
ccd979bd MF |
548 | spin_lock(&osb->osb_lock); |
549 | inode->i_generation = osb->s_next_generation++; | |
550 | spin_unlock(&osb->osb_lock); | |
551 | ||
552 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
553 | if (!*new_fe_bh) { | |
7391a294 | 554 | status = -ENOMEM; |
ccd979bd MF |
555 | mlog_errno(status); |
556 | goto leave; | |
557 | } | |
8cb471e8 | 558 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
ccd979bd | 559 | |
0cf2f763 JB |
560 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
561 | *new_fe_bh, | |
13723d00 | 562 | OCFS2_JOURNAL_ACCESS_CREATE); |
ccd979bd MF |
563 | if (status < 0) { |
564 | mlog_errno(status); | |
565 | goto leave; | |
566 | } | |
567 | ||
568 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
569 | memset(fe, 0, osb->sb->s_blocksize); | |
570 | ||
571 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
572 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
573 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
2b6cb576 | 574 | fe->i_suballoc_loc = cpu_to_le64(suballoc_loc); |
ccd979bd | 575 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); |
4d0ddb2c | 576 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
2c034176 EB |
577 | fe->i_uid = cpu_to_le32(i_uid_read(inode)); |
578 | fe->i_gid = cpu_to_le32(i_gid_read(inode)); | |
f5d36202 TY |
579 | fe->i_mode = cpu_to_le16(inode->i_mode); |
580 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 581 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
198a1ca3 MF |
582 | |
583 | ocfs2_set_links_count(fe, inode->i_nlink); | |
ccd979bd MF |
584 | |
585 | fe->i_last_eb_blk = 0; | |
586 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
13eb9887 | 587 | fe->i_flags |= cpu_to_le32(OCFS2_VALID_FL); |
ccd979bd MF |
588 | fe->i_atime = fe->i_ctime = fe->i_mtime = |
589 | cpu_to_le64(CURRENT_TIME.tv_sec); | |
590 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = | |
591 | cpu_to_le32(CURRENT_TIME.tv_nsec); | |
592 | fe->i_dtime = 0; | |
593 | ||
5b6a3a2b | 594 | /* |
9b7895ef MF |
595 | * If supported, directories start with inline data. If inline |
596 | * isn't supported, but indexing is, we start them as indexed. | |
5b6a3a2b | 597 | */ |
9b7895ef | 598 | feat = le16_to_cpu(fe->i_dyn_features); |
f5d36202 | 599 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
600 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
601 | ||
d9ae49d6 TY |
602 | fe->id2.i_data.id_count = cpu_to_le16( |
603 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); | |
5b6a3a2b MF |
604 | } else { |
605 | fel = &fe->id2.i_list; | |
606 | fel->l_tree_depth = 0; | |
607 | fel->l_next_free_rec = 0; | |
608 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
609 | } | |
ccd979bd | 610 | |
ec20cec7 | 611 | ocfs2_journal_dirty(handle, *new_fe_bh); |
ccd979bd | 612 | |
b657c95c | 613 | ocfs2_populate_inode(inode, fe, 1); |
0cf2f763 | 614 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
c271c5c2 SM |
615 | if (!ocfs2_mount_local(osb)) { |
616 | status = ocfs2_create_new_inode_locks(inode); | |
617 | if (status < 0) | |
618 | mlog_errno(status); | |
619 | } | |
ccd979bd | 620 | |
2931cdcb DW |
621 | oi->i_sync_tid = handle->h_transaction->t_tid; |
622 | oi->i_datasync_tid = handle->h_transaction->t_tid; | |
623 | ||
ccd979bd MF |
624 | leave: |
625 | if (status < 0) { | |
626 | if (*new_fe_bh) { | |
627 | brelse(*new_fe_bh); | |
628 | *new_fe_bh = NULL; | |
629 | } | |
ccd979bd MF |
630 | } |
631 | ||
c1e8d35e TM |
632 | if (status) |
633 | mlog_errno(status); | |
ccd979bd MF |
634 | return status; |
635 | } | |
636 | ||
021960ca MF |
637 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
638 | struct inode *dir, | |
639 | struct inode *inode, | |
640 | dev_t dev, | |
641 | struct buffer_head **new_fe_bh, | |
642 | struct buffer_head *parent_fe_bh, | |
643 | handle_t *handle, | |
644 | struct ocfs2_alloc_context *inode_ac) | |
645 | { | |
646 | int status = 0; | |
647 | u64 suballoc_loc, fe_blkno = 0; | |
648 | u16 suballoc_bit; | |
649 | ||
650 | *new_fe_bh = NULL; | |
651 | ||
652 | status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh, | |
653 | inode_ac, &suballoc_loc, | |
654 | &suballoc_bit, &fe_blkno); | |
655 | if (status < 0) { | |
656 | mlog_errno(status); | |
657 | return status; | |
658 | } | |
659 | ||
b1529a41 | 660 | status = __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh, |
021960ca MF |
661 | parent_fe_bh, handle, inode_ac, |
662 | fe_blkno, suballoc_loc, suballoc_bit); | |
b1529a41 | 663 | if (status < 0) { |
664 | u64 bg_blkno = ocfs2_which_suballoc_group(fe_blkno, suballoc_bit); | |
665 | int tmp = ocfs2_free_suballoc_bits(handle, inode_ac->ac_inode, | |
666 | inode_ac->ac_bh, suballoc_bit, bg_blkno, 1); | |
667 | if (tmp) | |
668 | mlog_errno(tmp); | |
669 | } | |
670 | ||
671 | return status; | |
021960ca MF |
672 | } |
673 | ||
ccd979bd MF |
674 | static int ocfs2_mkdir(struct inode *dir, |
675 | struct dentry *dentry, | |
18bb1db3 | 676 | umode_t mode) |
ccd979bd MF |
677 | { |
678 | int ret; | |
679 | ||
8990e44a TM |
680 | trace_ocfs2_mkdir(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
681 | OCFS2_I(dir)->ip_blkno, mode); | |
ccd979bd | 682 | ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0); |
c1e8d35e TM |
683 | if (ret) |
684 | mlog_errno(ret); | |
ccd979bd MF |
685 | |
686 | return ret; | |
687 | } | |
688 | ||
689 | static int ocfs2_create(struct inode *dir, | |
690 | struct dentry *dentry, | |
4acdaf27 | 691 | umode_t mode, |
ebfc3b49 | 692 | bool excl) |
ccd979bd MF |
693 | { |
694 | int ret; | |
695 | ||
8990e44a TM |
696 | trace_ocfs2_create(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
697 | (unsigned long long)OCFS2_I(dir)->ip_blkno, mode); | |
ccd979bd | 698 | ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0); |
c1e8d35e TM |
699 | if (ret) |
700 | mlog_errno(ret); | |
ccd979bd MF |
701 | |
702 | return ret; | |
703 | } | |
704 | ||
705 | static int ocfs2_link(struct dentry *old_dentry, | |
706 | struct inode *dir, | |
707 | struct dentry *dentry) | |
708 | { | |
1fabe148 | 709 | handle_t *handle; |
2b0143b5 DH |
710 | struct inode *inode = d_inode(old_dentry); |
711 | struct inode *old_dir = d_inode(old_dentry->d_parent); | |
ccd979bd MF |
712 | int err; |
713 | struct buffer_head *fe_bh = NULL; | |
53dc20b9 | 714 | struct buffer_head *old_dir_bh = NULL; |
ccd979bd | 715 | struct buffer_head *parent_fe_bh = NULL; |
ccd979bd MF |
716 | struct ocfs2_dinode *fe = NULL; |
717 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
4a12ca3a | 718 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 | 719 | sigset_t oldset; |
0e048316 | 720 | u64 old_de_ino; |
ccd979bd | 721 | |
8990e44a TM |
722 | trace_ocfs2_link((unsigned long long)OCFS2_I(inode)->ip_blkno, |
723 | old_dentry->d_name.len, old_dentry->d_name.name, | |
724 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 725 | |
123a9643 MF |
726 | if (S_ISDIR(inode->i_mode)) |
727 | return -EPERM; | |
ccd979bd | 728 | |
9c89fe0a JK |
729 | err = dquot_initialize(dir); |
730 | if (err) { | |
731 | mlog_errno(err); | |
732 | return err; | |
733 | } | |
907f4554 | 734 | |
53dc20b9 X |
735 | err = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
736 | &parent_fe_bh, dir, 0); | |
ccd979bd MF |
737 | if (err < 0) { |
738 | if (err != -ENOENT) | |
739 | mlog_errno(err); | |
123a9643 | 740 | return err; |
ccd979bd MF |
741 | } |
742 | ||
53dc20b9 X |
743 | /* make sure both dirs have bhs |
744 | * get an extra ref on old_dir_bh if old==new */ | |
745 | if (!parent_fe_bh) { | |
746 | if (old_dir_bh) { | |
747 | parent_fe_bh = old_dir_bh; | |
748 | get_bh(parent_fe_bh); | |
749 | } else { | |
750 | mlog(ML_ERROR, "%s: no old_dir_bh!\n", osb->uuid_str); | |
751 | err = -EIO; | |
752 | goto out; | |
753 | } | |
754 | } | |
755 | ||
0f62de2c TY |
756 | if (!dir->i_nlink) { |
757 | err = -ENOENT; | |
123a9643 | 758 | goto out; |
0f62de2c TY |
759 | } |
760 | ||
53dc20b9 | 761 | err = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
0e048316 X |
762 | old_dentry->d_name.len, &old_de_ino); |
763 | if (err) { | |
764 | err = -ENOENT; | |
765 | goto out; | |
766 | } | |
767 | ||
768 | /* | |
769 | * Check whether another node removed the source inode while we | |
770 | * were in the vfs. | |
771 | */ | |
772 | if (old_de_ino != OCFS2_I(inode)->ip_blkno) { | |
773 | err = -ENOENT; | |
774 | goto out; | |
775 | } | |
776 | ||
ccd979bd MF |
777 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
778 | dentry->d_name.len); | |
779 | if (err) | |
123a9643 | 780 | goto out; |
ccd979bd MF |
781 | |
782 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
783 | dentry->d_name.name, | |
4a12ca3a | 784 | dentry->d_name.len, &lookup); |
ccd979bd MF |
785 | if (err < 0) { |
786 | mlog_errno(err); | |
123a9643 | 787 | goto out; |
ccd979bd MF |
788 | } |
789 | ||
e63aecb6 | 790 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
791 | if (err < 0) { |
792 | if (err != -ENOENT) | |
793 | mlog_errno(err); | |
123a9643 | 794 | goto out; |
ccd979bd MF |
795 | } |
796 | ||
797 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
198a1ca3 | 798 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
ccd979bd | 799 | err = -EMLINK; |
123a9643 | 800 | goto out_unlock_inode; |
ccd979bd MF |
801 | } |
802 | ||
a90714c1 | 803 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
804 | if (IS_ERR(handle)) { |
805 | err = PTR_ERR(handle); | |
806 | handle = NULL; | |
807 | mlog_errno(err); | |
123a9643 | 808 | goto out_unlock_inode; |
ccd979bd MF |
809 | } |
810 | ||
547ba7c8 JB |
811 | /* Starting to change things, restart is no longer possible. */ |
812 | ocfs2_block_signals(&oldset); | |
813 | ||
0cf2f763 | 814 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 815 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
816 | if (err < 0) { |
817 | mlog_errno(err); | |
123a9643 | 818 | goto out_commit; |
ccd979bd MF |
819 | } |
820 | ||
d8c76e6f | 821 | inc_nlink(inode); |
ccd979bd | 822 | inode->i_ctime = CURRENT_TIME; |
198a1ca3 | 823 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
824 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
825 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
ec20cec7 | 826 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd MF |
827 | |
828 | err = ocfs2_add_entry(handle, dentry, inode, | |
829 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 830 | parent_fe_bh, &lookup); |
ccd979bd | 831 | if (err) { |
198a1ca3 | 832 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 833 | drop_nlink(inode); |
ccd979bd | 834 | mlog_errno(err); |
123a9643 | 835 | goto out_commit; |
ccd979bd MF |
836 | } |
837 | ||
0027dd5b | 838 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
839 | if (err) { |
840 | mlog_errno(err); | |
123a9643 | 841 | goto out_commit; |
379dfe9d MF |
842 | } |
843 | ||
7de9c6ee | 844 | ihold(inode); |
ccd979bd | 845 | d_instantiate(dentry, inode); |
123a9643 MF |
846 | |
847 | out_commit: | |
02dc1af4 | 848 | ocfs2_commit_trans(osb, handle); |
547ba7c8 | 849 | ocfs2_unblock_signals(&oldset); |
123a9643 | 850 | out_unlock_inode: |
e63aecb6 | 851 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
852 | |
853 | out: | |
53dc20b9 | 854 | ocfs2_double_unlock(old_dir, dir); |
123a9643 | 855 | |
a81cb88b MF |
856 | brelse(fe_bh); |
857 | brelse(parent_fe_bh); | |
53dc20b9 | 858 | brelse(old_dir_bh); |
ccd979bd | 859 | |
4a12ca3a MF |
860 | ocfs2_free_dir_lookup_result(&lookup); |
861 | ||
c1e8d35e TM |
862 | if (err) |
863 | mlog_errno(err); | |
ccd979bd MF |
864 | |
865 | return err; | |
866 | } | |
867 | ||
379dfe9d MF |
868 | /* |
869 | * Takes and drops an exclusive lock on the given dentry. This will | |
870 | * force other nodes to drop it. | |
871 | */ | |
872 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
873 | { | |
874 | int ret; | |
875 | ||
876 | ret = ocfs2_dentry_lock(dentry, 1); | |
877 | if (ret) | |
878 | mlog_errno(ret); | |
879 | else | |
880 | ocfs2_dentry_unlock(dentry, 1); | |
881 | ||
882 | return ret; | |
883 | } | |
884 | ||
b5a8bb71 | 885 | static inline int ocfs2_inode_is_unlinkable(struct inode *inode) |
17ff7856 MF |
886 | { |
887 | if (S_ISDIR(inode->i_mode)) { | |
888 | if (inode->i_nlink == 2) | |
889 | return 1; | |
890 | return 0; | |
891 | } | |
892 | ||
893 | if (inode->i_nlink == 1) | |
894 | return 1; | |
895 | return 0; | |
896 | } | |
897 | ||
ccd979bd MF |
898 | static int ocfs2_unlink(struct inode *dir, |
899 | struct dentry *dentry) | |
900 | { | |
901 | int status; | |
30a4f5e8 | 902 | int child_locked = 0; |
b5a8bb71 | 903 | bool is_unlinkable = false; |
2b0143b5 | 904 | struct inode *inode = d_inode(dentry); |
5098c27b | 905 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
906 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
907 | u64 blkno; | |
908 | struct ocfs2_dinode *fe = NULL; | |
909 | struct buffer_head *fe_bh = NULL; | |
910 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 911 | handle_t *handle = NULL; |
ccd979bd | 912 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
913 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
914 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd | 915 | |
8990e44a TM |
916 | trace_ocfs2_unlink(dir, dentry, dentry->d_name.len, |
917 | dentry->d_name.name, | |
918 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
919 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 920 | |
9c89fe0a JK |
921 | status = dquot_initialize(dir); |
922 | if (status) { | |
923 | mlog_errno(status); | |
924 | return status; | |
925 | } | |
907f4554 | 926 | |
2b0143b5 | 927 | BUG_ON(d_inode(dentry->d_parent) != dir); |
ccd979bd | 928 | |
8990e44a | 929 | if (inode == osb->root_inode) |
30a4f5e8 | 930 | return -EPERM; |
ccd979bd | 931 | |
cb25797d JK |
932 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
933 | OI_LS_PARENT); | |
ccd979bd MF |
934 | if (status < 0) { |
935 | if (status != -ENOENT) | |
936 | mlog_errno(status); | |
30a4f5e8 | 937 | return status; |
ccd979bd MF |
938 | } |
939 | ||
940 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
941 | dentry->d_name.len, &blkno, dir, |
942 | &lookup); | |
ccd979bd MF |
943 | if (status < 0) { |
944 | if (status != -ENOENT) | |
945 | mlog_errno(status); | |
946 | goto leave; | |
947 | } | |
948 | ||
949 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
950 | status = -ENOENT; | |
951 | ||
8990e44a TM |
952 | trace_ocfs2_unlink_noent( |
953 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
954 | (unsigned long long)blkno, | |
955 | OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
956 | goto leave; |
957 | } | |
958 | ||
e63aecb6 | 959 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
960 | if (status < 0) { |
961 | if (status != -ENOENT) | |
962 | mlog_errno(status); | |
963 | goto leave; | |
964 | } | |
30a4f5e8 | 965 | child_locked = 1; |
ccd979bd MF |
966 | |
967 | if (S_ISDIR(inode->i_mode)) { | |
b80b549c | 968 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
ccd979bd MF |
969 | status = -ENOTEMPTY; |
970 | goto leave; | |
971 | } | |
972 | } | |
973 | ||
379dfe9d | 974 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 975 | if (status < 0) { |
34d024f8 | 976 | /* This remote delete should succeed under all normal |
ccd979bd MF |
977 | * circumstances. */ |
978 | mlog_errno(status); | |
979 | goto leave; | |
980 | } | |
981 | ||
b5a8bb71 | 982 | if (ocfs2_inode_is_unlinkable(inode)) { |
19bd341f TM |
983 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
984 | OCFS2_I(inode)->ip_blkno, | |
06ee5c75 JQ |
985 | orphan_name, &orphan_insert, |
986 | false); | |
ccd979bd MF |
987 | if (status < 0) { |
988 | mlog_errno(status); | |
989 | goto leave; | |
990 | } | |
b5a8bb71 | 991 | is_unlinkable = true; |
ccd979bd MF |
992 | } |
993 | ||
a90714c1 | 994 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
995 | if (IS_ERR(handle)) { |
996 | status = PTR_ERR(handle); | |
997 | handle = NULL; | |
998 | mlog_errno(status); | |
999 | goto leave; | |
1000 | } | |
1001 | ||
0cf2f763 | 1002 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 1003 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1004 | if (status < 0) { |
1005 | mlog_errno(status); | |
1006 | goto leave; | |
1007 | } | |
1008 | ||
1009 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
1010 | ||
ccd979bd | 1011 | /* delete the name from the parent dir */ |
4a12ca3a | 1012 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
1013 | if (status < 0) { |
1014 | mlog_errno(status); | |
1015 | goto leave; | |
1016 | } | |
1017 | ||
17ff7856 MF |
1018 | if (S_ISDIR(inode->i_mode)) |
1019 | drop_nlink(inode); | |
1020 | drop_nlink(inode); | |
198a1ca3 | 1021 | ocfs2_set_links_count(fe, inode->i_nlink); |
ec20cec7 | 1022 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd | 1023 | |
592282cf MF |
1024 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; |
1025 | if (S_ISDIR(inode->i_mode)) | |
17ff7856 | 1026 | drop_nlink(dir); |
592282cf MF |
1027 | |
1028 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
1029 | if (status < 0) { | |
1030 | mlog_errno(status); | |
1031 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 1032 | inc_nlink(dir); |
b5a8bb71 YL |
1033 | goto leave; |
1034 | } | |
1035 | ||
1036 | if (is_unlinkable) { | |
1037 | status = ocfs2_orphan_add(osb, handle, inode, fe_bh, | |
06ee5c75 | 1038 | orphan_name, &orphan_insert, orphan_dir, false); |
b5a8bb71 YL |
1039 | if (status < 0) |
1040 | mlog_errno(status); | |
ccd979bd MF |
1041 | } |
1042 | ||
1043 | leave: | |
ccd979bd | 1044 | if (handle) |
02dc1af4 | 1045 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1046 | |
5098c27b MF |
1047 | if (orphan_dir) { |
1048 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1049 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
1050 | mutex_unlock(&orphan_dir->i_mutex); |
1051 | iput(orphan_dir); | |
1052 | } | |
1053 | ||
3cb2ec43 JQ |
1054 | if (child_locked) |
1055 | ocfs2_inode_unlock(inode, 1); | |
1056 | ||
1057 | ocfs2_inode_unlock(dir, 1); | |
1058 | ||
a81cb88b | 1059 | brelse(fe_bh); |
a81cb88b | 1060 | brelse(parent_node_bh); |
4a12ca3a MF |
1061 | |
1062 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1063 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd | 1064 | |
f5b25855 | 1065 | if (status && (status != -ENOTEMPTY) && (status != -ENOENT)) |
c1e8d35e | 1066 | mlog_errno(status); |
ccd979bd MF |
1067 | |
1068 | return status; | |
1069 | } | |
1070 | ||
f7a14f32 YJ |
1071 | static int ocfs2_check_if_ancestor(struct ocfs2_super *osb, |
1072 | u64 src_inode_no, u64 dest_inode_no) | |
1073 | { | |
1074 | int ret = 0, i = 0; | |
1075 | u64 parent_inode_no = 0; | |
1076 | u64 child_inode_no = src_inode_no; | |
1077 | struct inode *child_inode; | |
1078 | ||
1079 | #define MAX_LOOKUP_TIMES 32 | |
1080 | while (1) { | |
1081 | child_inode = ocfs2_iget(osb, child_inode_no, 0, 0); | |
1082 | if (IS_ERR(child_inode)) { | |
1083 | ret = PTR_ERR(child_inode); | |
1084 | break; | |
1085 | } | |
1086 | ||
1087 | ret = ocfs2_inode_lock(child_inode, NULL, 0); | |
1088 | if (ret < 0) { | |
1089 | iput(child_inode); | |
1090 | if (ret != -ENOENT) | |
1091 | mlog_errno(ret); | |
1092 | break; | |
1093 | } | |
1094 | ||
1095 | ret = ocfs2_lookup_ino_from_name(child_inode, "..", 2, | |
1096 | &parent_inode_no); | |
1097 | ocfs2_inode_unlock(child_inode, 0); | |
1098 | iput(child_inode); | |
1099 | if (ret < 0) { | |
1100 | ret = -ENOENT; | |
1101 | break; | |
1102 | } | |
1103 | ||
1104 | if (parent_inode_no == dest_inode_no) { | |
1105 | ret = 1; | |
1106 | break; | |
1107 | } | |
1108 | ||
1109 | if (parent_inode_no == osb->root_inode->i_ino) { | |
1110 | ret = 0; | |
1111 | break; | |
1112 | } | |
1113 | ||
1114 | child_inode_no = parent_inode_no; | |
1115 | ||
1116 | if (++i >= MAX_LOOKUP_TIMES) { | |
1117 | mlog(ML_NOTICE, "max lookup times reached, filesystem " | |
1118 | "may have nested directories, " | |
1119 | "src inode: %llu, dest inode: %llu.\n", | |
1120 | (unsigned long long)src_inode_no, | |
1121 | (unsigned long long)dest_inode_no); | |
1122 | ret = 0; | |
1123 | break; | |
1124 | } | |
1125 | } | |
1126 | ||
1127 | return ret; | |
1128 | } | |
1129 | ||
ccd979bd | 1130 | /* |
53dc20b9 | 1131 | * The only place this should be used is rename and link! |
ccd979bd MF |
1132 | * if they have the same id, then the 1st one is the only one locked. |
1133 | */ | |
1134 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
1135 | struct buffer_head **bh1, |
1136 | struct inode *inode1, | |
1137 | struct buffer_head **bh2, | |
53dc20b9 X |
1138 | struct inode *inode2, |
1139 | int rename) | |
ccd979bd MF |
1140 | { |
1141 | int status; | |
f7a14f32 | 1142 | int inode1_is_ancestor, inode2_is_ancestor; |
ccd979bd MF |
1143 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); |
1144 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
ccd979bd | 1145 | |
8990e44a TM |
1146 | trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno, |
1147 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 1148 | |
ccd979bd MF |
1149 | if (*bh1) |
1150 | *bh1 = NULL; | |
1151 | if (*bh2) | |
1152 | *bh2 = NULL; | |
1153 | ||
f7a14f32 YJ |
1154 | /* we always want to lock the one with the lower lockid first. |
1155 | * and if they are nested, we lock ancestor first */ | |
ccd979bd | 1156 | if (oi1->ip_blkno != oi2->ip_blkno) { |
f7a14f32 YJ |
1157 | inode1_is_ancestor = ocfs2_check_if_ancestor(osb, oi2->ip_blkno, |
1158 | oi1->ip_blkno); | |
1159 | if (inode1_is_ancestor < 0) { | |
1160 | status = inode1_is_ancestor; | |
1161 | goto bail; | |
1162 | } | |
1163 | ||
1164 | inode2_is_ancestor = ocfs2_check_if_ancestor(osb, oi1->ip_blkno, | |
1165 | oi2->ip_blkno); | |
1166 | if (inode2_is_ancestor < 0) { | |
1167 | status = inode2_is_ancestor; | |
1168 | goto bail; | |
1169 | } | |
1170 | ||
1171 | if ((inode1_is_ancestor == 1) || | |
1172 | (oi1->ip_blkno < oi2->ip_blkno && | |
1173 | inode2_is_ancestor == 0)) { | |
ccd979bd | 1174 | /* switch id1 and id2 around */ |
ab1ba021 FF |
1175 | swap(bh2, bh1); |
1176 | swap(inode2, inode1); | |
ccd979bd MF |
1177 | } |
1178 | /* lock id2 */ | |
cb25797d | 1179 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
53dc20b9 | 1180 | rename == 1 ? OI_LS_RENAME1 : OI_LS_PARENT); |
ccd979bd MF |
1181 | if (status < 0) { |
1182 | if (status != -ENOENT) | |
1183 | mlog_errno(status); | |
1184 | goto bail; | |
1185 | } | |
1186 | } | |
8d5596c6 | 1187 | |
ccd979bd | 1188 | /* lock id1 */ |
53dc20b9 X |
1189 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, |
1190 | rename == 1 ? OI_LS_RENAME2 : OI_LS_PARENT); | |
ccd979bd | 1191 | if (status < 0) { |
8d5596c6 MF |
1192 | /* |
1193 | * An error return must mean that no cluster locks | |
1194 | * were held on function exit. | |
1195 | */ | |
1e6d9153 | 1196 | if (oi1->ip_blkno != oi2->ip_blkno) { |
e63aecb6 | 1197 | ocfs2_inode_unlock(inode2, 1); |
1e6d9153 TM |
1198 | brelse(*bh2); |
1199 | *bh2 = NULL; | |
1200 | } | |
8d5596c6 | 1201 | |
ccd979bd MF |
1202 | if (status != -ENOENT) |
1203 | mlog_errno(status); | |
ccd979bd | 1204 | } |
8d5596c6 | 1205 | |
8990e44a TM |
1206 | trace_ocfs2_double_lock_end( |
1207 | (unsigned long long)OCFS2_I(inode1)->ip_blkno, | |
1208 | (unsigned long long)OCFS2_I(inode2)->ip_blkno); | |
1209 | ||
ccd979bd | 1210 | bail: |
c1e8d35e TM |
1211 | if (status) |
1212 | mlog_errno(status); | |
ccd979bd MF |
1213 | return status; |
1214 | } | |
1215 | ||
8d5596c6 MF |
1216 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
1217 | { | |
e63aecb6 | 1218 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
1219 | |
1220 | if (inode1 != inode2) | |
e63aecb6 | 1221 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1222 | } |
1223 | ||
ccd979bd MF |
1224 | static int ocfs2_rename(struct inode *old_dir, |
1225 | struct dentry *old_dentry, | |
1226 | struct inode *new_dir, | |
1227 | struct dentry *new_dentry) | |
1228 | { | |
4a12ca3a MF |
1229 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1230 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
2b0143b5 DH |
1231 | struct inode *old_inode = d_inode(old_dentry); |
1232 | struct inode *new_inode = d_inode(new_dentry); | |
5098c27b | 1233 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1234 | struct ocfs2_dinode *newfe = NULL; |
1235 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
ccd979bd | 1236 | struct buffer_head *newfe_bh = NULL; |
592282cf | 1237 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd | 1238 | struct ocfs2_super *osb = NULL; |
5b6a3a2b | 1239 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1240 | handle_t *handle = NULL; |
ccd979bd MF |
1241 | struct buffer_head *old_dir_bh = NULL; |
1242 | struct buffer_head *new_dir_bh = NULL; | |
847c9db5 | 1243 | u32 old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1244 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1245 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1246 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1247 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1248 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1249 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
5fb1beb0 | 1250 | bool should_add_orphan = false; |
ccd979bd MF |
1251 | |
1252 | /* At some point it might be nice to break this function up a | |
1253 | * bit. */ | |
1254 | ||
8990e44a TM |
1255 | trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry, |
1256 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1257 | new_dentry->d_name.len, new_dentry->d_name.name); | |
ccd979bd | 1258 | |
9c89fe0a JK |
1259 | status = dquot_initialize(old_dir); |
1260 | if (status) { | |
1261 | mlog_errno(status); | |
1262 | goto bail; | |
1263 | } | |
1264 | status = dquot_initialize(new_dir); | |
1265 | if (status) { | |
1266 | mlog_errno(status); | |
1267 | goto bail; | |
1268 | } | |
907f4554 | 1269 | |
ccd979bd MF |
1270 | osb = OCFS2_SB(old_dir->i_sb); |
1271 | ||
1272 | if (new_inode) { | |
1273 | if (!igrab(new_inode)) | |
1274 | BUG(); | |
1275 | } | |
1276 | ||
1b3c3714 | 1277 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1278 | * a/b/c |
1279 | * a/d | |
1280 | * a,b,c, and d are all directories. | |
1281 | * | |
1282 | * from cwd of 'a' on both nodes: | |
1283 | * node1: mv b/c d | |
1284 | * node2: mv d b/c | |
1285 | * | |
1286 | * And that's why, just like the VFS, we need a file system | |
1287 | * rename lock. */ | |
5dabd695 | 1288 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1289 | status = ocfs2_rename_lock(osb); |
1290 | if (status < 0) { | |
1291 | mlog_errno(status); | |
1292 | goto bail; | |
1293 | } | |
1294 | rename_lock = 1; | |
f7a14f32 YJ |
1295 | |
1296 | /* here we cannot guarantee the inodes haven't just been | |
1297 | * changed, so check if they are nested again */ | |
1298 | status = ocfs2_check_if_ancestor(osb, new_dir->i_ino, | |
1299 | old_inode->i_ino); | |
1300 | if (status < 0) { | |
1301 | mlog_errno(status); | |
1302 | goto bail; | |
1303 | } else if (status == 1) { | |
1304 | status = -EPERM; | |
1305 | trace_ocfs2_rename_not_permitted( | |
1306 | (unsigned long long)old_inode->i_ino, | |
1307 | (unsigned long long)new_dir->i_ino); | |
1308 | goto bail; | |
1309 | } | |
ccd979bd MF |
1310 | } |
1311 | ||
ccd979bd | 1312 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 | 1313 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
53dc20b9 | 1314 | &new_dir_bh, new_dir, 1); |
ccd979bd MF |
1315 | if (status < 0) { |
1316 | mlog_errno(status); | |
1317 | goto bail; | |
1318 | } | |
8d5596c6 | 1319 | parents_locked = 1; |
ccd979bd | 1320 | |
928dda1f YJ |
1321 | if (!new_dir->i_nlink) { |
1322 | status = -EACCES; | |
1323 | goto bail; | |
1324 | } | |
1325 | ||
ccd979bd MF |
1326 | /* make sure both dirs have bhs |
1327 | * get an extra ref on old_dir_bh if old==new */ | |
1328 | if (!new_dir_bh) { | |
1329 | if (old_dir_bh) { | |
1330 | new_dir_bh = old_dir_bh; | |
1331 | get_bh(new_dir_bh); | |
1332 | } else { | |
1333 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1334 | status = -EIO; | |
1335 | goto bail; | |
1336 | } | |
1337 | } | |
1338 | ||
379dfe9d | 1339 | /* |
592282cf | 1340 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1341 | * also ensures that the downconvert thread on other nodes |
1342 | * won't have to concurrently downconvert the inode and the | |
1343 | * dentry locks. | |
379dfe9d | 1344 | */ |
cb25797d JK |
1345 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
1346 | OI_LS_PARENT); | |
379dfe9d MF |
1347 | if (status < 0) { |
1348 | if (status != -ENOENT) | |
ccd979bd | 1349 | mlog_errno(status); |
379dfe9d MF |
1350 | goto bail; |
1351 | } | |
8d5596c6 | 1352 | old_child_locked = 1; |
ccd979bd | 1353 | |
379dfe9d MF |
1354 | status = ocfs2_remote_dentry_delete(old_dentry); |
1355 | if (status < 0) { | |
1356 | mlog_errno(status); | |
1357 | goto bail; | |
1358 | } | |
1359 | ||
1360 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1361 | u64 old_inode_parent; |
1362 | ||
4a12ca3a | 1363 | update_dot_dot = 1; |
38760e24 | 1364 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1365 | old_inode, |
1366 | &old_inode_dot_dot_res); | |
38760e24 MF |
1367 | if (status) { |
1368 | status = -EIO; | |
ccd979bd | 1369 | goto bail; |
38760e24 | 1370 | } |
ccd979bd | 1371 | |
38760e24 MF |
1372 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1373 | status = -EIO; | |
ccd979bd | 1374 | goto bail; |
38760e24 MF |
1375 | } |
1376 | ||
1377 | if (!new_inode && new_dir != old_dir && | |
198a1ca3 | 1378 | new_dir->i_nlink >= ocfs2_link_max(osb)) { |
38760e24 | 1379 | status = -EMLINK; |
ccd979bd | 1380 | goto bail; |
38760e24 | 1381 | } |
ccd979bd MF |
1382 | } |
1383 | ||
5b6a3a2b MF |
1384 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1385 | old_dentry->d_name.len, | |
1386 | &old_de_ino); | |
1387 | if (status) { | |
1388 | status = -ENOENT; | |
ccd979bd | 1389 | goto bail; |
5b6a3a2b | 1390 | } |
ccd979bd MF |
1391 | |
1392 | /* | |
1393 | * Check for inode number is _not_ due to possible IO errors. | |
1394 | * We might rmdir the source, keep it as pwd of some process | |
1395 | * and merrily kill the link to whatever was created under the | |
1396 | * same name. Goodbye sticky bit ;-< | |
1397 | */ | |
5b6a3a2b MF |
1398 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1399 | status = -ENOENT; | |
ccd979bd | 1400 | goto bail; |
5b6a3a2b | 1401 | } |
ccd979bd MF |
1402 | |
1403 | /* check if the target already exists (in which case we need | |
1404 | * to delete it */ | |
1405 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1406 | new_dentry->d_name.len, | |
4a12ca3a MF |
1407 | &newfe_blkno, new_dir, |
1408 | &target_lookup_res); | |
ccd979bd MF |
1409 | /* The only error we allow here is -ENOENT because the new |
1410 | * file not existing is perfectly valid. */ | |
1411 | if ((status < 0) && (status != -ENOENT)) { | |
1412 | /* If we cannot find the file specified we should just */ | |
1413 | /* return the error... */ | |
1414 | mlog_errno(status); | |
1415 | goto bail; | |
1416 | } | |
4a12ca3a MF |
1417 | if (status == 0) |
1418 | target_exists = 1; | |
ccd979bd | 1419 | |
4a12ca3a | 1420 | if (!target_exists && new_inode) { |
e325a88f SE |
1421 | /* |
1422 | * Target was unlinked by another node while we were | |
1423 | * waiting to get to ocfs2_rename(). There isn't | |
1424 | * anything we can do here to help the situation, so | |
1425 | * bubble up the appropriate error. | |
1426 | */ | |
1427 | status = -ENOENT; | |
1428 | goto bail; | |
1429 | } | |
ccd979bd MF |
1430 | |
1431 | /* In case we need to overwrite an existing file, we blow it | |
1432 | * away first */ | |
4a12ca3a | 1433 | if (target_exists) { |
ccd979bd MF |
1434 | /* VFS didn't think there existed an inode here, but |
1435 | * someone else in the cluster must have raced our | |
1436 | * rename to create one. Today we error cleanly, in | |
1437 | * the future we should consider calling iget to build | |
1438 | * a new struct inode for this entry. */ | |
1439 | if (!new_inode) { | |
1440 | status = -EACCES; | |
1441 | ||
8990e44a TM |
1442 | trace_ocfs2_rename_target_exists(new_dentry->d_name.len, |
1443 | new_dentry->d_name.name); | |
ccd979bd MF |
1444 | goto bail; |
1445 | } | |
1446 | ||
1447 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1448 | status = -EACCES; | |
1449 | ||
8990e44a | 1450 | trace_ocfs2_rename_disagree( |
b0697053 MF |
1451 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, |
1452 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1453 | OCFS2_I(new_inode)->ip_flags); |
1454 | goto bail; | |
1455 | } | |
1456 | ||
e63aecb6 | 1457 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1458 | if (status < 0) { |
1459 | if (status != -ENOENT) | |
1460 | mlog_errno(status); | |
1461 | goto bail; | |
1462 | } | |
8d5596c6 | 1463 | new_child_locked = 1; |
ccd979bd | 1464 | |
379dfe9d | 1465 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1466 | if (status < 0) { |
1467 | mlog_errno(status); | |
1468 | goto bail; | |
1469 | } | |
1470 | ||
1471 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1472 | ||
8990e44a | 1473 | trace_ocfs2_rename_over_existing( |
b0697053 | 1474 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1475 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1476 | ||
1477 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1478 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
19bd341f | 1479 | OCFS2_I(new_inode)->ip_blkno, |
06ee5c75 JQ |
1480 | orphan_name, &orphan_insert, |
1481 | false); | |
ccd979bd MF |
1482 | if (status < 0) { |
1483 | mlog_errno(status); | |
1484 | goto bail; | |
1485 | } | |
5fb1beb0 | 1486 | should_add_orphan = true; |
ccd979bd MF |
1487 | } |
1488 | } else { | |
2b0143b5 | 1489 | BUG_ON(d_inode(new_dentry->d_parent) != new_dir); |
ccd979bd MF |
1490 | |
1491 | status = ocfs2_check_dir_for_entry(new_dir, | |
1492 | new_dentry->d_name.name, | |
1493 | new_dentry->d_name.len); | |
1494 | if (status) | |
1495 | goto bail; | |
1496 | ||
1497 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1498 | new_dentry->d_name.name, | |
1499 | new_dentry->d_name.len, | |
4a12ca3a | 1500 | &target_insert); |
ccd979bd MF |
1501 | if (status < 0) { |
1502 | mlog_errno(status); | |
1503 | goto bail; | |
1504 | } | |
1505 | } | |
1506 | ||
a90714c1 | 1507 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1508 | if (IS_ERR(handle)) { |
1509 | status = PTR_ERR(handle); | |
1510 | handle = NULL; | |
1511 | mlog_errno(status); | |
1512 | goto bail; | |
1513 | } | |
1514 | ||
4a12ca3a | 1515 | if (target_exists) { |
ccd979bd | 1516 | if (S_ISDIR(new_inode->i_mode)) { |
b80b549c MF |
1517 | if (new_inode->i_nlink != 2 || |
1518 | !ocfs2_empty_dir(new_inode)) { | |
ccd979bd MF |
1519 | status = -ENOTEMPTY; |
1520 | goto bail; | |
1521 | } | |
1522 | } | |
0cf2f763 JB |
1523 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
1524 | newfe_bh, | |
13723d00 | 1525 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1526 | if (status < 0) { |
1527 | mlog_errno(status); | |
1528 | goto bail; | |
1529 | } | |
1530 | ||
ccd979bd | 1531 | /* change the dirent to point to the correct inode */ |
4a12ca3a MF |
1532 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1533 | old_inode); | |
ccd979bd MF |
1534 | if (status < 0) { |
1535 | mlog_errno(status); | |
1536 | goto bail; | |
1537 | } | |
ccd979bd | 1538 | new_dir->i_version++; |
ccd979bd MF |
1539 | |
1540 | if (S_ISDIR(new_inode->i_mode)) | |
198a1ca3 | 1541 | ocfs2_set_links_count(newfe, 0); |
ccd979bd | 1542 | else |
198a1ca3 | 1543 | ocfs2_add_links_count(newfe, -1); |
ec20cec7 | 1544 | ocfs2_journal_dirty(handle, newfe_bh); |
5fb1beb0 | 1545 | if (should_add_orphan) { |
1546 | status = ocfs2_orphan_add(osb, handle, new_inode, | |
1547 | newfe_bh, orphan_name, | |
06ee5c75 | 1548 | &orphan_insert, orphan_dir, false); |
5fb1beb0 | 1549 | if (status < 0) { |
1550 | mlog_errno(status); | |
1551 | goto bail; | |
1552 | } | |
1553 | } | |
ccd979bd MF |
1554 | } else { |
1555 | /* if the name was not found in new_dir, add it now */ | |
1556 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1557 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1558 | new_dir_bh, &target_insert); |
ccd979bd MF |
1559 | } |
1560 | ||
1561 | old_inode->i_ctime = CURRENT_TIME; | |
1562 | mark_inode_dirty(old_inode); | |
480214d7 | 1563 | |
0cf2f763 JB |
1564 | status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), |
1565 | old_inode_bh, | |
13723d00 | 1566 | OCFS2_JOURNAL_ACCESS_WRITE); |
480214d7 SM |
1567 | if (status >= 0) { |
1568 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1569 | ||
1570 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); | |
1571 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); | |
ec20cec7 | 1572 | ocfs2_journal_dirty(handle, old_inode_bh); |
480214d7 SM |
1573 | } else |
1574 | mlog_errno(status); | |
ccd979bd | 1575 | |
5b6a3a2b MF |
1576 | /* |
1577 | * Now that the name has been added to new_dir, remove the old name. | |
1578 | * | |
1579 | * We don't keep any directory entry context around until now | |
1580 | * because the insert might have changed the type of directory | |
1581 | * we're dealing with. | |
1582 | */ | |
4a12ca3a MF |
1583 | status = ocfs2_find_entry(old_dentry->d_name.name, |
1584 | old_dentry->d_name.len, old_dir, | |
1585 | &old_entry_lookup); | |
807a7907 | 1586 | if (status) { |
1587 | if (!is_journal_aborted(osb->journal->j_journal)) { | |
1588 | ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " | |
1589 | "is not deleted.", | |
1590 | new_dentry->d_name.len, new_dentry->d_name.name, | |
1591 | old_dentry->d_name.len, old_dentry->d_name.name); | |
1592 | } | |
5b6a3a2b | 1593 | goto bail; |
807a7907 | 1594 | } |
5b6a3a2b | 1595 | |
4a12ca3a | 1596 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
ccd979bd MF |
1597 | if (status < 0) { |
1598 | mlog_errno(status); | |
807a7907 | 1599 | if (!is_journal_aborted(osb->journal->j_journal)) { |
1600 | ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " | |
1601 | "is not deleted.", | |
1602 | new_dentry->d_name.len, new_dentry->d_name.name, | |
1603 | old_dentry->d_name.len, old_dentry->d_name.name); | |
1604 | } | |
ccd979bd MF |
1605 | goto bail; |
1606 | } | |
1607 | ||
1608 | if (new_inode) { | |
6d6b77f1 | 1609 | drop_nlink(new_inode); |
ccd979bd MF |
1610 | new_inode->i_ctime = CURRENT_TIME; |
1611 | } | |
1612 | old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME; | |
4a12ca3a MF |
1613 | |
1614 | if (update_dot_dot) { | |
1615 | status = ocfs2_update_entry(old_inode, handle, | |
1616 | &old_inode_dot_dot_res, new_dir); | |
6d6b77f1 | 1617 | drop_nlink(old_dir); |
ccd979bd | 1618 | if (new_inode) { |
6d6b77f1 | 1619 | drop_nlink(new_inode); |
ccd979bd | 1620 | } else { |
d8c76e6f | 1621 | inc_nlink(new_dir); |
ccd979bd MF |
1622 | mark_inode_dirty(new_dir); |
1623 | } | |
1624 | } | |
1625 | mark_inode_dirty(old_dir); | |
592282cf MF |
1626 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1627 | if (new_inode) { | |
ccd979bd | 1628 | mark_inode_dirty(new_inode); |
592282cf MF |
1629 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1630 | } | |
ccd979bd | 1631 | |
592282cf MF |
1632 | if (old_dir != new_dir) { |
1633 | /* Keep the same times on both directories.*/ | |
1634 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; | |
1635 | ||
1636 | /* | |
1637 | * This will also pick up the i_nlink change from the | |
1638 | * block above. | |
1639 | */ | |
1640 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1641 | } | |
ccd979bd MF |
1642 | |
1643 | if (old_dir_nlink != old_dir->i_nlink) { | |
1644 | if (!old_dir_bh) { | |
1645 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1646 | "%llu from %d to %d but bh is NULL!\n", |
1647 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1648 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1649 | } else { |
1650 | struct ocfs2_dinode *fe; | |
0cf2f763 JB |
1651 | status = ocfs2_journal_access_di(handle, |
1652 | INODE_CACHE(old_dir), | |
1653 | old_dir_bh, | |
1654 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd | 1655 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
198a1ca3 | 1656 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
ec20cec7 | 1657 | ocfs2_journal_dirty(handle, old_dir_bh); |
ccd979bd MF |
1658 | } |
1659 | } | |
379dfe9d | 1660 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1661 | status = 0; |
1662 | bail: | |
ccd979bd | 1663 | if (handle) |
02dc1af4 | 1664 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1665 | |
5098c27b MF |
1666 | if (orphan_dir) { |
1667 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1668 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
1669 | mutex_unlock(&orphan_dir->i_mutex); |
1670 | iput(orphan_dir); | |
1671 | } | |
1672 | ||
3cb2ec43 JQ |
1673 | if (new_child_locked) |
1674 | ocfs2_inode_unlock(new_inode, 1); | |
1675 | ||
1676 | if (old_child_locked) | |
1677 | ocfs2_inode_unlock(old_inode, 1); | |
1678 | ||
1679 | if (parents_locked) | |
1680 | ocfs2_double_unlock(old_dir, new_dir); | |
1681 | ||
1682 | if (rename_lock) | |
1683 | ocfs2_rename_unlock(osb); | |
1684 | ||
ccd979bd MF |
1685 | if (new_inode) |
1686 | sync_mapping_buffers(old_inode->i_mapping); | |
1687 | ||
1688 | if (new_inode) | |
1689 | iput(new_inode); | |
4a12ca3a MF |
1690 | |
1691 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1692 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1693 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1694 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1695 | ocfs2_free_dir_lookup_result(&target_insert); | |
1696 | ||
a81cb88b MF |
1697 | brelse(newfe_bh); |
1698 | brelse(old_inode_bh); | |
1699 | brelse(old_dir_bh); | |
1700 | brelse(new_dir_bh); | |
ccd979bd | 1701 | |
c1e8d35e TM |
1702 | if (status) |
1703 | mlog_errno(status); | |
ccd979bd MF |
1704 | |
1705 | return status; | |
1706 | } | |
1707 | ||
1708 | /* | |
1709 | * we expect i_size = strlen(symname). Copy symname into the file | |
1710 | * data, including the null terminator. | |
1711 | */ | |
1712 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1713 | handle_t *handle, |
ccd979bd MF |
1714 | struct inode *inode, |
1715 | const char *symname) | |
1716 | { | |
1717 | struct buffer_head **bhs = NULL; | |
1718 | const char *c; | |
1719 | struct super_block *sb = osb->sb; | |
4f902c37 | 1720 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1721 | int virtual, blocks, status, i, bytes_left; |
1722 | ||
1723 | bytes_left = i_size_read(inode) + 1; | |
1724 | /* we can't trust i_blocks because we're actually going to | |
1725 | * write i_size + 1 bytes. */ | |
1726 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1727 | ||
8990e44a TM |
1728 | trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks, |
1729 | i_size_read(inode), blocks); | |
ccd979bd MF |
1730 | |
1731 | /* Sanity check -- make sure we're going to fit. */ | |
1732 | if (bytes_left > | |
1733 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1734 | status = -EIO; | |
1735 | mlog_errno(status); | |
1736 | goto bail; | |
1737 | } | |
1738 | ||
1739 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1740 | if (!bhs) { | |
1741 | status = -ENOMEM; | |
1742 | mlog_errno(status); | |
1743 | goto bail; | |
1744 | } | |
1745 | ||
49cb8d2d MF |
1746 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1747 | NULL); | |
ccd979bd MF |
1748 | if (status < 0) { |
1749 | mlog_errno(status); | |
1750 | goto bail; | |
1751 | } | |
1752 | ||
1753 | /* links can never be larger than one cluster so we know this | |
1754 | * is all going to be contiguous, but do a sanity check | |
1755 | * anyway. */ | |
1756 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1757 | status = -EIO; | |
1758 | mlog_errno(status); | |
1759 | goto bail; | |
1760 | } | |
1761 | ||
1762 | virtual = 0; | |
1763 | while(bytes_left > 0) { | |
1764 | c = &symname[virtual * sb->s_blocksize]; | |
1765 | ||
1766 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1767 | if (!bhs[virtual]) { | |
1768 | status = -ENOMEM; | |
1769 | mlog_errno(status); | |
1770 | goto bail; | |
1771 | } | |
8cb471e8 JB |
1772 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
1773 | bhs[virtual]); | |
ccd979bd | 1774 | |
0cf2f763 JB |
1775 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
1776 | bhs[virtual], | |
ccd979bd MF |
1777 | OCFS2_JOURNAL_ACCESS_CREATE); |
1778 | if (status < 0) { | |
1779 | mlog_errno(status); | |
1780 | goto bail; | |
1781 | } | |
1782 | ||
1783 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1784 | ||
1785 | memcpy(bhs[virtual]->b_data, c, | |
1786 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1787 | bytes_left); | |
1788 | ||
ec20cec7 | 1789 | ocfs2_journal_dirty(handle, bhs[virtual]); |
ccd979bd MF |
1790 | |
1791 | virtual++; | |
1792 | p_blkno++; | |
1793 | bytes_left -= sb->s_blocksize; | |
1794 | } | |
1795 | ||
1796 | status = 0; | |
1797 | bail: | |
1798 | ||
1799 | if (bhs) { | |
1800 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1801 | brelse(bhs[i]); |
ccd979bd MF |
1802 | kfree(bhs); |
1803 | } | |
1804 | ||
c1e8d35e TM |
1805 | if (status) |
1806 | mlog_errno(status); | |
ccd979bd MF |
1807 | return status; |
1808 | } | |
1809 | ||
1810 | static int ocfs2_symlink(struct inode *dir, | |
1811 | struct dentry *dentry, | |
1812 | const char *symname) | |
1813 | { | |
1814 | int status, l, credits; | |
1815 | u64 newsize; | |
1816 | struct ocfs2_super *osb = NULL; | |
1817 | struct inode *inode = NULL; | |
1818 | struct super_block *sb; | |
1819 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1820 | struct buffer_head *parent_fe_bh = NULL; |
1821 | struct ocfs2_dinode *fe = NULL; | |
1822 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1823 | handle_t *handle = NULL; |
ccd979bd MF |
1824 | struct ocfs2_alloc_context *inode_ac = NULL; |
1825 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1826 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1827 | int want_clusters = 0; | |
1828 | int xattr_credits = 0; | |
1829 | struct ocfs2_security_xattr_info si = { | |
1830 | .enable = 1, | |
1831 | }; | |
a90714c1 | 1832 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1833 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
1834 | sigset_t oldset; |
1835 | int did_block_signals = 0; | |
595297a8 | 1836 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 1837 | |
8990e44a TM |
1838 | trace_ocfs2_symlink_begin(dir, dentry, symname, |
1839 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 1840 | |
9c89fe0a JK |
1841 | status = dquot_initialize(dir); |
1842 | if (status) { | |
1843 | mlog_errno(status); | |
1844 | goto bail; | |
1845 | } | |
907f4554 | 1846 | |
ccd979bd MF |
1847 | sb = dir->i_sb; |
1848 | osb = OCFS2_SB(sb); | |
1849 | ||
1850 | l = strlen(symname) + 1; | |
1851 | ||
1852 | credits = ocfs2_calc_symlink_credits(sb); | |
1853 | ||
ccd979bd | 1854 | /* lock the parent directory */ |
e63aecb6 | 1855 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1856 | if (status < 0) { |
1857 | if (status != -ENOENT) | |
1858 | mlog_errno(status); | |
6d8fc40e | 1859 | return status; |
ccd979bd MF |
1860 | } |
1861 | ||
1862 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
198a1ca3 | 1863 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
1864 | /* can't make a file in a deleted directory. */ |
1865 | status = -ENOENT; | |
1866 | goto bail; | |
1867 | } | |
1868 | ||
1869 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1870 | dentry->d_name.len); | |
1871 | if (status) | |
1872 | goto bail; | |
1873 | ||
1874 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1875 | dentry->d_name.name, | |
4a12ca3a | 1876 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1877 | if (status < 0) { |
1878 | mlog_errno(status); | |
1879 | goto bail; | |
1880 | } | |
1881 | ||
da5cbf2f | 1882 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1883 | if (status < 0) { |
1884 | if (status != -ENOSPC) | |
1885 | mlog_errno(status); | |
1886 | goto bail; | |
1887 | } | |
1888 | ||
f5d36202 | 1889 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
9c89fe0a JK |
1890 | if (IS_ERR(inode)) { |
1891 | status = PTR_ERR(inode); | |
1892 | inode = NULL; | |
f5d36202 TY |
1893 | mlog_errno(status); |
1894 | goto bail; | |
1895 | } | |
1896 | ||
534eaddd | 1897 | /* get security xattr */ |
2a7dba39 | 1898 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
1899 | if (status) { |
1900 | if (status == -EOPNOTSUPP) | |
1901 | si.enable = 0; | |
1902 | else { | |
1903 | mlog_errno(status); | |
1904 | goto bail; | |
1905 | } | |
1906 | } | |
1907 | ||
1908 | /* calculate meta data/clusters for setting security xattr */ | |
1909 | if (si.enable) { | |
1910 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1911 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1912 | if (status < 0) { |
534eaddd | 1913 | mlog_errno(status); |
ccd979bd MF |
1914 | goto bail; |
1915 | } | |
1916 | } | |
1917 | ||
534eaddd TY |
1918 | /* don't reserve bitmap space for fast symlinks. */ |
1919 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1920 | want_clusters += 1; | |
1921 | ||
1922 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1923 | if (status < 0) { | |
1924 | if (status != -ENOSPC) | |
1925 | mlog_errno(status); | |
1926 | goto bail; | |
1927 | } | |
1928 | ||
1929 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1930 | if (IS_ERR(handle)) { |
1931 | status = PTR_ERR(handle); | |
1932 | handle = NULL; | |
1933 | mlog_errno(status); | |
1934 | goto bail; | |
1935 | } | |
1936 | ||
547ba7c8 JB |
1937 | /* Starting to change things, restart is no longer possible. */ |
1938 | ocfs2_block_signals(&oldset); | |
1939 | did_block_signals = 1; | |
1940 | ||
63936dda CH |
1941 | status = dquot_alloc_inode(inode); |
1942 | if (status) | |
a90714c1 | 1943 | goto bail; |
a90714c1 JK |
1944 | did_quota_inode = 1; |
1945 | ||
8990e44a TM |
1946 | trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len, |
1947 | dentry->d_name.name, | |
1948 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
1949 | inode->i_mode); | |
19bd341f TM |
1950 | |
1951 | status = ocfs2_mknod_locked(osb, dir, inode, | |
f5d36202 TY |
1952 | 0, &new_fe_bh, parent_fe_bh, handle, |
1953 | inode_ac); | |
ccd979bd MF |
1954 | if (status < 0) { |
1955 | mlog_errno(status); | |
1956 | goto bail; | |
1957 | } | |
1958 | ||
1959 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1960 | inode->i_rdev = 0; | |
1961 | newsize = l - 1; | |
ea022dfb | 1962 | inode->i_op = &ocfs2_symlink_inode_operations; |
ccd979bd | 1963 | if (l > ocfs2_fast_symlink_chars(sb)) { |
dcd0538f MF |
1964 | u32 offset = 0; |
1965 | ||
5dd4056d CH |
1966 | status = dquot_alloc_space_nodirty(inode, |
1967 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1968 | if (status) | |
a90714c1 | 1969 | goto bail; |
a90714c1 | 1970 | did_quota = 1; |
ea022dfb | 1971 | inode->i_mapping->a_ops = &ocfs2_aops; |
0eb8d47e TM |
1972 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1973 | new_fe_bh, | |
1974 | handle, data_ac, NULL, | |
1975 | NULL); | |
ccd979bd MF |
1976 | if (status < 0) { |
1977 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1978 | mlog(ML_ERROR, |
1979 | "Failed to extend file to %llu\n", | |
1980 | (unsigned long long)newsize); | |
ccd979bd MF |
1981 | mlog_errno(status); |
1982 | status = -ENOSPC; | |
1983 | } | |
1984 | goto bail; | |
1985 | } | |
1986 | i_size_write(inode, newsize); | |
8110b073 | 1987 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd | 1988 | } else { |
ea022dfb | 1989 | inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops; |
ccd979bd MF |
1990 | memcpy((char *) fe->id2.i_symlink, symname, l); |
1991 | i_size_write(inode, newsize); | |
1992 | inode->i_blocks = 0; | |
1993 | } | |
1994 | ||
1995 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1996 | if (status < 0) { | |
1997 | mlog_errno(status); | |
1998 | goto bail; | |
1999 | } | |
2000 | ||
2001 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
2002 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
2003 | symname); | |
2004 | if (status < 0) { | |
2005 | mlog_errno(status); | |
2006 | goto bail; | |
2007 | } | |
2008 | } | |
2009 | ||
534eaddd TY |
2010 | if (si.enable) { |
2011 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
2012 | xattr_ac, data_ac); | |
2013 | if (status < 0) { | |
2014 | mlog_errno(status); | |
2015 | goto bail; | |
2016 | } | |
2017 | } | |
2018 | ||
a9743fcd MF |
2019 | /* |
2020 | * Do this before adding the entry to the directory. We add | |
2021 | * also set d_op after success so that ->d_iput() will cleanup | |
2022 | * the dentry lock even if ocfs2_add_entry() fails below. | |
2023 | */ | |
2024 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); | |
2025 | if (status) { | |
ccd979bd MF |
2026 | mlog_errno(status); |
2027 | goto bail; | |
2028 | } | |
2029 | ||
595297a8 | 2030 | dl = dentry->d_fsdata; |
2031 | ||
a9743fcd MF |
2032 | status = ocfs2_add_entry(handle, dentry, inode, |
2033 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
2034 | &lookup); | |
2035 | if (status < 0) { | |
379dfe9d MF |
2036 | mlog_errno(status); |
2037 | goto bail; | |
2038 | } | |
2039 | ||
ccd979bd | 2040 | insert_inode_hash(inode); |
ccd979bd MF |
2041 | d_instantiate(dentry, inode); |
2042 | bail: | |
a90714c1 | 2043 | if (status < 0 && did_quota) |
5dd4056d | 2044 | dquot_free_space_nodirty(inode, |
a90714c1 JK |
2045 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
2046 | if (status < 0 && did_quota_inode) | |
63936dda | 2047 | dquot_free_inode(inode); |
ccd979bd | 2048 | if (handle) |
02dc1af4 | 2049 | ocfs2_commit_trans(osb, handle); |
6d8fc40e | 2050 | |
e63aecb6 | 2051 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
2052 | if (did_block_signals) |
2053 | ocfs2_unblock_signals(&oldset); | |
6d8fc40e | 2054 | |
a81cb88b MF |
2055 | brelse(new_fe_bh); |
2056 | brelse(parent_fe_bh); | |
534eaddd | 2057 | kfree(si.value); |
4a12ca3a | 2058 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
2059 | if (inode_ac) |
2060 | ocfs2_free_alloc_context(inode_ac); | |
2061 | if (data_ac) | |
2062 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
2063 | if (xattr_ac) |
2064 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 | 2065 | if ((status < 0) && inode) { |
595297a8 | 2066 | if (dl) |
2067 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
2068 | ||
ab41fdc8 | 2069 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
f5d36202 | 2070 | clear_nlink(inode); |
ccd979bd | 2071 | iput(inode); |
f5d36202 | 2072 | } |
ccd979bd | 2073 | |
c1e8d35e TM |
2074 | if (status) |
2075 | mlog_errno(status); | |
ccd979bd MF |
2076 | |
2077 | return status; | |
2078 | } | |
2079 | ||
ccd979bd MF |
2080 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
2081 | { | |
2082 | int status, namelen; | |
2083 | ||
b0697053 MF |
2084 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
2085 | (long long)blkno); | |
ccd979bd MF |
2086 | if (namelen <= 0) { |
2087 | if (namelen) | |
2088 | status = namelen; | |
2089 | else | |
2090 | status = -EINVAL; | |
2091 | mlog_errno(status); | |
2092 | goto bail; | |
2093 | } | |
2094 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
2095 | status = -EINVAL; | |
2096 | mlog_errno(status); | |
2097 | goto bail; | |
2098 | } | |
2099 | ||
8990e44a | 2100 | trace_ocfs2_blkno_stringify(blkno, name, namelen); |
ccd979bd MF |
2101 | |
2102 | status = 0; | |
2103 | bail: | |
c1e8d35e TM |
2104 | if (status < 0) |
2105 | mlog_errno(status); | |
ccd979bd MF |
2106 | return status; |
2107 | } | |
2108 | ||
dd43bcde MF |
2109 | static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb, |
2110 | struct inode **ret_orphan_dir, | |
2111 | struct buffer_head **ret_orphan_dir_bh) | |
ccd979bd | 2112 | { |
5098c27b | 2113 | struct inode *orphan_dir_inode; |
ccd979bd | 2114 | struct buffer_head *orphan_dir_bh = NULL; |
dd43bcde | 2115 | int ret = 0; |
ccd979bd MF |
2116 | |
2117 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2118 | ORPHAN_DIR_SYSTEM_INODE, | |
2119 | osb->slot_num); | |
2120 | if (!orphan_dir_inode) { | |
dd43bcde MF |
2121 | ret = -ENOENT; |
2122 | mlog_errno(ret); | |
2123 | return ret; | |
ccd979bd MF |
2124 | } |
2125 | ||
5098c27b MF |
2126 | mutex_lock(&orphan_dir_inode->i_mutex); |
2127 | ||
dd43bcde MF |
2128 | ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2129 | if (ret < 0) { | |
2130 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2131 | iput(orphan_dir_inode); | |
2132 | ||
2133 | mlog_errno(ret); | |
2134 | return ret; | |
ccd979bd MF |
2135 | } |
2136 | ||
dd43bcde MF |
2137 | *ret_orphan_dir = orphan_dir_inode; |
2138 | *ret_orphan_dir_bh = orphan_dir_bh; | |
5098c27b | 2139 | |
dd43bcde MF |
2140 | return 0; |
2141 | } | |
2142 | ||
2143 | static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode, | |
2144 | struct buffer_head *orphan_dir_bh, | |
2145 | u64 blkno, | |
2146 | char *name, | |
06ee5c75 JQ |
2147 | struct ocfs2_dir_lookup_result *lookup, |
2148 | bool dio) | |
dd43bcde MF |
2149 | { |
2150 | int ret; | |
2151 | struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb); | |
06ee5c75 JQ |
2152 | int namelen = dio ? |
2153 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2154 | OCFS2_ORPHAN_NAMELEN; | |
2155 | ||
2156 | if (dio) { | |
2157 | ret = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2158 | OCFS2_DIO_ORPHAN_PREFIX); | |
2159 | if (ret != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2160 | ret = -EINVAL; | |
2161 | mlog_errno(ret); | |
2162 | return ret; | |
2163 | } | |
dd43bcde | 2164 | |
06ee5c75 JQ |
2165 | ret = ocfs2_blkno_stringify(blkno, |
2166 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2167 | } else | |
2168 | ret = ocfs2_blkno_stringify(blkno, name); | |
dd43bcde MF |
2169 | if (ret < 0) { |
2170 | mlog_errno(ret); | |
2171 | return ret; | |
2172 | } | |
2173 | ||
2174 | ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
2175 | orphan_dir_bh, name, | |
06ee5c75 | 2176 | namelen, lookup); |
dd43bcde MF |
2177 | if (ret < 0) { |
2178 | mlog_errno(ret); | |
2179 | return ret; | |
2180 | } | |
2181 | ||
2182 | return 0; | |
2183 | } | |
2184 | ||
2185 | /** | |
2186 | * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for | |
2187 | * insertion of an orphan. | |
2188 | * @osb: ocfs2 file system | |
2189 | * @ret_orphan_dir: Orphan dir inode - returned locked! | |
2190 | * @blkno: Actual block number of the inode to be inserted into orphan dir. | |
2191 | * @lookup: dir lookup result, to be passed back into functions like | |
2192 | * ocfs2_orphan_add | |
2193 | * | |
2194 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2195 | * fields will be populated. | |
2196 | * | |
2197 | * Returns non-zero on failure. | |
2198 | */ | |
2199 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
2200 | struct inode **ret_orphan_dir, | |
2201 | u64 blkno, | |
2202 | char *name, | |
06ee5c75 JQ |
2203 | struct ocfs2_dir_lookup_result *lookup, |
2204 | bool dio) | |
dd43bcde MF |
2205 | { |
2206 | struct inode *orphan_dir_inode = NULL; | |
2207 | struct buffer_head *orphan_dir_bh = NULL; | |
2208 | int ret = 0; | |
2209 | ||
2210 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode, | |
2211 | &orphan_dir_bh); | |
2212 | if (ret < 0) { | |
2213 | mlog_errno(ret); | |
2214 | return ret; | |
2215 | } | |
2216 | ||
2217 | ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh, | |
06ee5c75 | 2218 | blkno, name, lookup, dio); |
dd43bcde MF |
2219 | if (ret < 0) { |
2220 | mlog_errno(ret); | |
2221 | goto out; | |
ccd979bd MF |
2222 | } |
2223 | ||
5098c27b MF |
2224 | *ret_orphan_dir = orphan_dir_inode; |
2225 | ||
dd43bcde MF |
2226 | out: |
2227 | brelse(orphan_dir_bh); | |
2228 | ||
2229 | if (ret) { | |
2230 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5098c27b | 2231 | mutex_unlock(&orphan_dir_inode->i_mutex); |
ccd979bd | 2232 | iput(orphan_dir_inode); |
5098c27b | 2233 | } |
ccd979bd | 2234 | |
c1e8d35e TM |
2235 | if (ret) |
2236 | mlog_errno(ret); | |
dd43bcde | 2237 | return ret; |
ccd979bd MF |
2238 | } |
2239 | ||
2240 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 2241 | handle_t *handle, |
ccd979bd | 2242 | struct inode *inode, |
3939fda4 | 2243 | struct buffer_head *fe_bh, |
ccd979bd | 2244 | char *name, |
4a12ca3a | 2245 | struct ocfs2_dir_lookup_result *lookup, |
06ee5c75 JQ |
2246 | struct inode *orphan_dir_inode, |
2247 | bool dio) | |
ccd979bd | 2248 | { |
ccd979bd MF |
2249 | struct buffer_head *orphan_dir_bh = NULL; |
2250 | int status = 0; | |
2251 | struct ocfs2_dinode *orphan_fe; | |
3939fda4 | 2252 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; |
06ee5c75 JQ |
2253 | int namelen = dio ? |
2254 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2255 | OCFS2_ORPHAN_NAMELEN; | |
ccd979bd | 2256 | |
8990e44a TM |
2257 | trace_ocfs2_orphan_add_begin( |
2258 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 2259 | |
b657c95c | 2260 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
2261 | if (status < 0) { |
2262 | mlog_errno(status); | |
2263 | goto leave; | |
2264 | } | |
2265 | ||
0cf2f763 JB |
2266 | status = ocfs2_journal_access_di(handle, |
2267 | INODE_CACHE(orphan_dir_inode), | |
2268 | orphan_dir_bh, | |
13723d00 | 2269 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2270 | if (status < 0) { |
2271 | mlog_errno(status); | |
2272 | goto leave; | |
2273 | } | |
2274 | ||
ea45466a YL |
2275 | /* |
2276 | * We're going to journal the change of i_flags and i_orphaned_slot. | |
2277 | * It's safe anyway, though some callers may duplicate the journaling. | |
2278 | * Journaling within the func just make the logic look more | |
2279 | * straightforward. | |
2280 | */ | |
2281 | status = ocfs2_journal_access_di(handle, | |
2282 | INODE_CACHE(inode), | |
2283 | fe_bh, | |
2284 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2285 | if (status < 0) { | |
2286 | mlog_errno(status); | |
2287 | goto leave; | |
2288 | } | |
2289 | ||
ccd979bd MF |
2290 | /* we're a cluster, and nlink can change on disk from |
2291 | * underneath us... */ | |
2292 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2293 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2294 | ocfs2_add_links_count(orphan_fe, 1); |
bfe86848 | 2295 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2296 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2297 | |
2298 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
06ee5c75 | 2299 | namelen, inode, |
ccd979bd | 2300 | OCFS2_I(inode)->ip_blkno, |
4a12ca3a | 2301 | orphan_dir_bh, lookup); |
ccd979bd MF |
2302 | if (status < 0) { |
2303 | mlog_errno(status); | |
ea45466a | 2304 | goto rollback; |
3939fda4 TY |
2305 | } |
2306 | ||
06ee5c75 JQ |
2307 | if (dio) { |
2308 | /* Update flag OCFS2_DIO_ORPHANED_FL and record the orphan | |
2309 | * slot. | |
2310 | */ | |
2311 | fe->i_flags |= cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2312 | fe->i_dio_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2313 | } else { | |
2314 | fe->i_flags |= cpu_to_le32(OCFS2_ORPHANED_FL); | |
2315 | OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR; | |
ccd979bd | 2316 | |
06ee5c75 JQ |
2317 | /* Record which orphan dir our inode now resides |
2318 | * in. delete_inode will use this to determine which orphan | |
2319 | * dir to lock. */ | |
2320 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2321 | } | |
ccd979bd | 2322 | |
3939fda4 TY |
2323 | ocfs2_journal_dirty(handle, fe_bh); |
2324 | ||
8990e44a TM |
2325 | trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno, |
2326 | osb->slot_num); | |
ccd979bd | 2327 | |
ea45466a YL |
2328 | rollback: |
2329 | if (status < 0) { | |
2330 | if (S_ISDIR(inode->i_mode)) | |
2331 | ocfs2_add_links_count(orphan_fe, -1); | |
2332 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); | |
2333 | } | |
2334 | ||
ccd979bd | 2335 | leave: |
a81cb88b | 2336 | brelse(orphan_dir_bh); |
ccd979bd | 2337 | |
ccd979bd MF |
2338 | return status; |
2339 | } | |
2340 | ||
2341 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
2342 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 2343 | handle_t *handle, |
ccd979bd MF |
2344 | struct inode *orphan_dir_inode, |
2345 | struct inode *inode, | |
06ee5c75 JQ |
2346 | struct buffer_head *orphan_dir_bh, |
2347 | bool dio) | |
ccd979bd | 2348 | { |
06ee5c75 JQ |
2349 | const int namelen = OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN; |
2350 | char name[namelen + 1]; | |
ccd979bd MF |
2351 | struct ocfs2_dinode *orphan_fe; |
2352 | int status = 0; | |
4a12ca3a | 2353 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd | 2354 | |
06ee5c75 JQ |
2355 | if (dio) { |
2356 | status = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2357 | OCFS2_DIO_ORPHAN_PREFIX); | |
2358 | if (status != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2359 | status = -EINVAL; | |
2360 | mlog_errno(status); | |
2361 | return status; | |
2362 | } | |
2363 | ||
2364 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, | |
2365 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2366 | } else | |
2367 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
ccd979bd MF |
2368 | if (status < 0) { |
2369 | mlog_errno(status); | |
2370 | goto leave; | |
2371 | } | |
2372 | ||
8990e44a TM |
2373 | trace_ocfs2_orphan_del( |
2374 | (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
e38a5739 | 2375 | name, strlen(name)); |
ccd979bd MF |
2376 | |
2377 | /* find it's spot in the orphan directory */ | |
e38a5739 | 2378 | status = ocfs2_find_entry(name, strlen(name), orphan_dir_inode, |
4a12ca3a MF |
2379 | &lookup); |
2380 | if (status) { | |
ccd979bd MF |
2381 | mlog_errno(status); |
2382 | goto leave; | |
2383 | } | |
2384 | ||
2385 | /* remove it from the orphan directory */ | |
4a12ca3a | 2386 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
2387 | if (status < 0) { |
2388 | mlog_errno(status); | |
2389 | goto leave; | |
2390 | } | |
2391 | ||
0cf2f763 JB |
2392 | status = ocfs2_journal_access_di(handle, |
2393 | INODE_CACHE(orphan_dir_inode), | |
2394 | orphan_dir_bh, | |
13723d00 | 2395 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2396 | if (status < 0) { |
2397 | mlog_errno(status); | |
2398 | goto leave; | |
2399 | } | |
2400 | ||
2401 | /* do the i_nlink dance! :) */ | |
2402 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2403 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2404 | ocfs2_add_links_count(orphan_fe, -1); |
bfe86848 | 2405 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2406 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2407 | |
2408 | leave: | |
4a12ca3a | 2409 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd | 2410 | |
c1e8d35e TM |
2411 | if (status) |
2412 | mlog_errno(status); | |
ccd979bd MF |
2413 | return status; |
2414 | } | |
2415 | ||
97b8f4a9 | 2416 | /** |
25985edc | 2417 | * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to receive a newly |
97b8f4a9 MF |
2418 | * allocated file. This is different from the typical 'add to orphan dir' |
2419 | * operation in that the inode does not yet exist. This is a problem because | |
2420 | * the orphan dir stringifies the inode block number to come up with it's | |
2421 | * dirent. Obviously if the inode does not yet exist we have a chicken and egg | |
2422 | * problem. This function works around it by calling deeper into the orphan | |
2423 | * and suballoc code than other callers. Use this only by necessity. | |
2424 | * @dir: The directory which this inode will ultimately wind up under - not the | |
2425 | * orphan dir! | |
2426 | * @dir_bh: buffer_head the @dir inode block | |
2427 | * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled | |
2428 | * with the string to be used for orphan dirent. Pass back to the orphan dir | |
2429 | * code. | |
2430 | * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan | |
2431 | * dir code. | |
2432 | * @ret_di_blkno: block number where the new inode will be allocated. | |
2433 | * @orphan_insert: Dir insert context to be passed back into orphan dir code. | |
2434 | * @ret_inode_ac: Inode alloc context to be passed back to the allocator. | |
2435 | * | |
2436 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2437 | * fields will be populated. | |
2438 | * | |
2439 | * Returns non-zero on failure. | |
2440 | */ | |
2441 | static int ocfs2_prep_new_orphaned_file(struct inode *dir, | |
2442 | struct buffer_head *dir_bh, | |
2443 | char *orphan_name, | |
2444 | struct inode **ret_orphan_dir, | |
2445 | u64 *ret_di_blkno, | |
2446 | struct ocfs2_dir_lookup_result *orphan_insert, | |
2447 | struct ocfs2_alloc_context **ret_inode_ac) | |
2448 | { | |
2449 | int ret; | |
2450 | u64 di_blkno; | |
2451 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2452 | struct inode *orphan_dir = NULL; | |
2453 | struct buffer_head *orphan_dir_bh = NULL; | |
2454 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2455 | ||
2456 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh); | |
2457 | if (ret < 0) { | |
2458 | mlog_errno(ret); | |
2459 | return ret; | |
2460 | } | |
2461 | ||
2462 | /* reserve an inode spot */ | |
2463 | ret = ocfs2_reserve_new_inode(osb, &inode_ac); | |
2464 | if (ret < 0) { | |
2465 | if (ret != -ENOSPC) | |
2466 | mlog_errno(ret); | |
2467 | goto out; | |
2468 | } | |
2469 | ||
2470 | ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac, | |
2471 | &di_blkno); | |
2472 | if (ret) { | |
2473 | mlog_errno(ret); | |
2474 | goto out; | |
2475 | } | |
2476 | ||
2477 | ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh, | |
06ee5c75 JQ |
2478 | di_blkno, orphan_name, orphan_insert, |
2479 | false); | |
97b8f4a9 MF |
2480 | if (ret < 0) { |
2481 | mlog_errno(ret); | |
2482 | goto out; | |
2483 | } | |
2484 | ||
2485 | out: | |
2486 | if (ret == 0) { | |
2487 | *ret_orphan_dir = orphan_dir; | |
2488 | *ret_di_blkno = di_blkno; | |
2489 | *ret_inode_ac = inode_ac; | |
2490 | /* | |
2491 | * orphan_name and orphan_insert are already up to | |
2492 | * date via prepare_orphan_dir | |
2493 | */ | |
2494 | } else { | |
2495 | /* Unroll reserve_new_inode* */ | |
2496 | if (inode_ac) | |
2497 | ocfs2_free_alloc_context(inode_ac); | |
2498 | ||
2499 | /* Unroll orphan dir locking */ | |
2500 | mutex_unlock(&orphan_dir->i_mutex); | |
2501 | ocfs2_inode_unlock(orphan_dir, 1); | |
2502 | iput(orphan_dir); | |
2503 | } | |
2504 | ||
2505 | brelse(orphan_dir_bh); | |
2506 | ||
7869e590 | 2507 | return ret; |
97b8f4a9 MF |
2508 | } |
2509 | ||
bc13d347 TM |
2510 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
2511 | int mode, | |
2512 | struct inode **new_inode) | |
2513 | { | |
2514 | int status, did_quota_inode = 0; | |
2515 | struct inode *inode = NULL; | |
2516 | struct inode *orphan_dir = NULL; | |
2517 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2518 | struct ocfs2_dinode *di = NULL; | |
2519 | handle_t *handle = NULL; | |
2520 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2521 | struct buffer_head *parent_di_bh = NULL; | |
2522 | struct buffer_head *new_di_bh = NULL; | |
2523 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2524 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
97b8f4a9 MF |
2525 | u64 uninitialized_var(di_blkno), suballoc_loc; |
2526 | u16 suballoc_bit; | |
bc13d347 TM |
2527 | |
2528 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2529 | if (status < 0) { | |
2530 | if (status != -ENOENT) | |
2531 | mlog_errno(status); | |
2532 | return status; | |
2533 | } | |
2534 | ||
97b8f4a9 MF |
2535 | status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh, |
2536 | orphan_name, &orphan_dir, | |
2537 | &di_blkno, &orphan_insert, &inode_ac); | |
bc13d347 TM |
2538 | if (status < 0) { |
2539 | if (status != -ENOSPC) | |
2540 | mlog_errno(status); | |
2541 | goto leave; | |
2542 | } | |
2543 | ||
2544 | inode = ocfs2_get_init_inode(dir, mode); | |
9c89fe0a JK |
2545 | if (IS_ERR(inode)) { |
2546 | status = PTR_ERR(inode); | |
2547 | inode = NULL; | |
bc13d347 TM |
2548 | mlog_errno(status); |
2549 | goto leave; | |
2550 | } | |
2551 | ||
2552 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); | |
2553 | if (IS_ERR(handle)) { | |
2554 | status = PTR_ERR(handle); | |
2555 | handle = NULL; | |
2556 | mlog_errno(status); | |
2557 | goto leave; | |
2558 | } | |
2559 | ||
63936dda CH |
2560 | status = dquot_alloc_inode(inode); |
2561 | if (status) | |
bc13d347 | 2562 | goto leave; |
bc13d347 TM |
2563 | did_quota_inode = 1; |
2564 | ||
97b8f4a9 MF |
2565 | status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac, |
2566 | &suballoc_loc, | |
2567 | &suballoc_bit, di_blkno); | |
bc13d347 TM |
2568 | if (status < 0) { |
2569 | mlog_errno(status); | |
2570 | goto leave; | |
2571 | } | |
2572 | ||
6d6b77f1 | 2573 | clear_nlink(inode); |
97b8f4a9 MF |
2574 | /* do the real work now. */ |
2575 | status = __ocfs2_mknod_locked(dir, inode, | |
2576 | 0, &new_di_bh, parent_di_bh, handle, | |
2577 | inode_ac, di_blkno, suballoc_loc, | |
2578 | suballoc_bit); | |
bc13d347 TM |
2579 | if (status < 0) { |
2580 | mlog_errno(status); | |
2581 | goto leave; | |
2582 | } | |
2583 | ||
2584 | di = (struct ocfs2_dinode *)new_di_bh->b_data; | |
3939fda4 | 2585 | status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name, |
06ee5c75 | 2586 | &orphan_insert, orphan_dir, false); |
bc13d347 TM |
2587 | if (status < 0) { |
2588 | mlog_errno(status); | |
2589 | goto leave; | |
2590 | } | |
2591 | ||
2592 | /* get open lock so that only nodes can't remove it from orphan dir. */ | |
2593 | status = ocfs2_open_lock(inode); | |
2594 | if (status < 0) | |
2595 | mlog_errno(status); | |
2596 | ||
c7d260af | 2597 | insert_inode_hash(inode); |
bc13d347 TM |
2598 | leave: |
2599 | if (status < 0 && did_quota_inode) | |
63936dda | 2600 | dquot_free_inode(inode); |
bc13d347 TM |
2601 | if (handle) |
2602 | ocfs2_commit_trans(osb, handle); | |
2603 | ||
2604 | if (orphan_dir) { | |
2605 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
2606 | ocfs2_inode_unlock(orphan_dir, 1); | |
2607 | mutex_unlock(&orphan_dir->i_mutex); | |
2608 | iput(orphan_dir); | |
2609 | } | |
2610 | ||
bc13d347 TM |
2611 | if ((status < 0) && inode) { |
2612 | clear_nlink(inode); | |
2613 | iput(inode); | |
2614 | } | |
2615 | ||
2616 | if (inode_ac) | |
2617 | ocfs2_free_alloc_context(inode_ac); | |
2618 | ||
2619 | brelse(new_di_bh); | |
2620 | ||
2621 | if (!status) | |
2622 | *new_inode = inode; | |
2623 | ||
2624 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2625 | ||
2626 | ocfs2_inode_unlock(dir, 1); | |
2627 | brelse(parent_di_bh); | |
2628 | return status; | |
2629 | } | |
2630 | ||
06ee5c75 JQ |
2631 | int ocfs2_add_inode_to_orphan(struct ocfs2_super *osb, |
2632 | struct inode *inode) | |
2633 | { | |
2634 | char orphan_name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1]; | |
2635 | struct inode *orphan_dir_inode = NULL; | |
2636 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
2637 | struct buffer_head *di_bh = NULL; | |
2638 | int status = 0; | |
2639 | handle_t *handle = NULL; | |
4813962b | 2640 | struct ocfs2_dinode *di = NULL; |
06ee5c75 JQ |
2641 | |
2642 | status = ocfs2_inode_lock(inode, &di_bh, 1); | |
2643 | if (status < 0) { | |
2644 | mlog_errno(status); | |
2645 | goto bail; | |
2646 | } | |
2647 | ||
4813962b JQ |
2648 | di = (struct ocfs2_dinode *) di_bh->b_data; |
2649 | /* | |
2650 | * Another append dio crashed? | |
512f62ac | 2651 | * If so, manually recover it first. |
4813962b JQ |
2652 | */ |
2653 | if (unlikely(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))) { | |
512f62ac JQ |
2654 | status = ocfs2_truncate_file(inode, di_bh, i_size_read(inode)); |
2655 | if (status < 0) { | |
2656 | if (status != -ENOSPC) | |
2657 | mlog_errno(status); | |
2658 | goto bail_unlock_inode; | |
2659 | } | |
2660 | ||
2661 | status = ocfs2_del_inode_from_orphan(osb, inode, di_bh, 0, 0); | |
2662 | if (status < 0) { | |
2663 | mlog_errno(status); | |
2664 | goto bail_unlock_inode; | |
2665 | } | |
4813962b JQ |
2666 | } |
2667 | ||
06ee5c75 JQ |
2668 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir_inode, |
2669 | OCFS2_I(inode)->ip_blkno, | |
2670 | orphan_name, | |
2671 | &orphan_insert, | |
2672 | true); | |
2673 | if (status < 0) { | |
2674 | mlog_errno(status); | |
2675 | goto bail_unlock_inode; | |
2676 | } | |
2677 | ||
2678 | handle = ocfs2_start_trans(osb, | |
2679 | OCFS2_INODE_ADD_TO_ORPHAN_CREDITS); | |
2680 | if (IS_ERR(handle)) { | |
2681 | status = PTR_ERR(handle); | |
2682 | goto bail_unlock_orphan; | |
2683 | } | |
2684 | ||
2685 | status = ocfs2_orphan_add(osb, handle, inode, di_bh, orphan_name, | |
2686 | &orphan_insert, orphan_dir_inode, true); | |
2687 | if (status) | |
2688 | mlog_errno(status); | |
2689 | ||
2690 | ocfs2_commit_trans(osb, handle); | |
2691 | ||
2692 | bail_unlock_orphan: | |
2693 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
2694 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2695 | iput(orphan_dir_inode); | |
2696 | ||
2697 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2698 | ||
2699 | bail_unlock_inode: | |
2700 | ocfs2_inode_unlock(inode, 1); | |
2701 | brelse(di_bh); | |
2702 | ||
2703 | bail: | |
2704 | return status; | |
2705 | } | |
2706 | ||
2707 | int ocfs2_del_inode_from_orphan(struct ocfs2_super *osb, | |
cf1776a9 JQ |
2708 | struct inode *inode, struct buffer_head *di_bh, |
2709 | int update_isize, loff_t end) | |
06ee5c75 JQ |
2710 | { |
2711 | struct inode *orphan_dir_inode = NULL; | |
2712 | struct buffer_head *orphan_dir_bh = NULL; | |
cf1776a9 | 2713 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data; |
06ee5c75 JQ |
2714 | handle_t *handle = NULL; |
2715 | int status = 0; | |
2716 | ||
06ee5c75 JQ |
2717 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
2718 | ORPHAN_DIR_SYSTEM_INODE, | |
2719 | le16_to_cpu(di->i_dio_orphaned_slot)); | |
2720 | if (!orphan_dir_inode) { | |
2721 | status = -ENOENT; | |
2722 | mlog_errno(status); | |
cf1776a9 | 2723 | goto bail; |
06ee5c75 JQ |
2724 | } |
2725 | ||
2726 | mutex_lock(&orphan_dir_inode->i_mutex); | |
2727 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2728 | if (status < 0) { | |
2729 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2730 | iput(orphan_dir_inode); | |
2731 | mlog_errno(status); | |
cf1776a9 | 2732 | goto bail; |
06ee5c75 JQ |
2733 | } |
2734 | ||
2735 | handle = ocfs2_start_trans(osb, | |
2736 | OCFS2_INODE_DEL_FROM_ORPHAN_CREDITS); | |
2737 | if (IS_ERR(handle)) { | |
2738 | status = PTR_ERR(handle); | |
2739 | goto bail_unlock_orphan; | |
2740 | } | |
2741 | ||
2742 | BUG_ON(!(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))); | |
2743 | ||
2744 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, | |
2745 | inode, orphan_dir_bh, true); | |
2746 | if (status < 0) { | |
2747 | mlog_errno(status); | |
2748 | goto bail_commit; | |
2749 | } | |
2750 | ||
2751 | status = ocfs2_journal_access_di(handle, | |
2752 | INODE_CACHE(inode), | |
2753 | di_bh, | |
2754 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2755 | if (status < 0) { | |
2756 | mlog_errno(status); | |
2757 | goto bail_commit; | |
2758 | } | |
2759 | ||
2760 | di->i_flags &= ~cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2761 | di->i_dio_orphaned_slot = 0; | |
2762 | ||
2763 | if (update_isize) { | |
2764 | status = ocfs2_set_inode_size(handle, inode, di_bh, end); | |
2765 | if (status) | |
2766 | mlog_errno(status); | |
2767 | } else | |
2768 | ocfs2_journal_dirty(handle, di_bh); | |
2769 | ||
2770 | bail_commit: | |
2771 | ocfs2_commit_trans(osb, handle); | |
2772 | ||
2773 | bail_unlock_orphan: | |
2774 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
2775 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2776 | brelse(orphan_dir_bh); | |
2777 | iput(orphan_dir_inode); | |
2778 | ||
06ee5c75 JQ |
2779 | bail: |
2780 | return status; | |
2781 | } | |
2782 | ||
bc13d347 TM |
2783 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, |
2784 | struct inode *inode, | |
2785 | struct dentry *dentry) | |
2786 | { | |
2787 | int status = 0; | |
2788 | struct buffer_head *parent_di_bh = NULL; | |
2789 | handle_t *handle = NULL; | |
2790 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2791 | struct ocfs2_dinode *dir_di, *di; | |
2792 | struct inode *orphan_dir_inode = NULL; | |
2793 | struct buffer_head *orphan_dir_bh = NULL; | |
2794 | struct buffer_head *di_bh = NULL; | |
2795 | struct ocfs2_dir_lookup_result lookup = { NULL, }; | |
2796 | ||
8990e44a TM |
2797 | trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry, |
2798 | dentry->d_name.len, dentry->d_name.name, | |
2799 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
2800 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
bc13d347 TM |
2801 | |
2802 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2803 | if (status < 0) { | |
2804 | if (status != -ENOENT) | |
2805 | mlog_errno(status); | |
2806 | return status; | |
2807 | } | |
2808 | ||
2809 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; | |
2810 | if (!dir_di->i_links_count) { | |
2811 | /* can't make a file in a deleted directory. */ | |
2812 | status = -ENOENT; | |
2813 | goto leave; | |
2814 | } | |
2815 | ||
2816 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
2817 | dentry->d_name.len); | |
2818 | if (status) | |
2819 | goto leave; | |
2820 | ||
2821 | /* get a spot inside the dir. */ | |
2822 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, | |
2823 | dentry->d_name.name, | |
2824 | dentry->d_name.len, &lookup); | |
2825 | if (status < 0) { | |
2826 | mlog_errno(status); | |
2827 | goto leave; | |
2828 | } | |
2829 | ||
2830 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2831 | ORPHAN_DIR_SYSTEM_INODE, | |
2832 | osb->slot_num); | |
2833 | if (!orphan_dir_inode) { | |
62f8b1f0 | 2834 | status = -ENOENT; |
bc13d347 TM |
2835 | mlog_errno(status); |
2836 | goto leave; | |
2837 | } | |
2838 | ||
2839 | mutex_lock(&orphan_dir_inode->i_mutex); | |
2840 | ||
2841 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2842 | if (status < 0) { | |
2843 | mlog_errno(status); | |
2844 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2845 | iput(orphan_dir_inode); | |
2846 | goto leave; | |
2847 | } | |
2848 | ||
2849 | status = ocfs2_read_inode_block(inode, &di_bh); | |
2850 | if (status < 0) { | |
2851 | mlog_errno(status); | |
2852 | goto orphan_unlock; | |
2853 | } | |
2854 | ||
2855 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); | |
2856 | if (IS_ERR(handle)) { | |
2857 | status = PTR_ERR(handle); | |
2858 | handle = NULL; | |
2859 | mlog_errno(status); | |
2860 | goto orphan_unlock; | |
2861 | } | |
2862 | ||
2863 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), | |
2864 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2865 | if (status < 0) { | |
2866 | mlog_errno(status); | |
2867 | goto out_commit; | |
2868 | } | |
2869 | ||
2870 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
06ee5c75 | 2871 | orphan_dir_bh, false); |
bc13d347 TM |
2872 | if (status < 0) { |
2873 | mlog_errno(status); | |
2874 | goto out_commit; | |
2875 | } | |
2876 | ||
2877 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
13eb9887 | 2878 | di->i_flags &= ~cpu_to_le32(OCFS2_ORPHANED_FL); |
bc13d347 | 2879 | di->i_orphaned_slot = 0; |
bfe86848 | 2880 | set_nlink(inode, 1); |
10cf1a02 | 2881 | ocfs2_set_links_count(di, inode->i_nlink); |
6fdb702d | 2882 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
bc13d347 TM |
2883 | ocfs2_journal_dirty(handle, di_bh); |
2884 | ||
2885 | status = ocfs2_add_entry(handle, dentry, inode, | |
2886 | OCFS2_I(inode)->ip_blkno, parent_di_bh, | |
2887 | &lookup); | |
2888 | if (status < 0) { | |
2889 | mlog_errno(status); | |
2890 | goto out_commit; | |
2891 | } | |
2892 | ||
2893 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
2894 | OCFS2_I(dir)->ip_blkno); | |
2895 | if (status) { | |
2896 | mlog_errno(status); | |
2897 | goto out_commit; | |
2898 | } | |
2899 | ||
bc13d347 TM |
2900 | d_instantiate(dentry, inode); |
2901 | status = 0; | |
2902 | out_commit: | |
2903 | ocfs2_commit_trans(osb, handle); | |
2904 | orphan_unlock: | |
2905 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
2906 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2907 | iput(orphan_dir_inode); | |
2908 | leave: | |
2909 | ||
2910 | ocfs2_inode_unlock(dir, 1); | |
2911 | ||
2912 | brelse(di_bh); | |
2913 | brelse(parent_di_bh); | |
2914 | brelse(orphan_dir_bh); | |
2915 | ||
2916 | ocfs2_free_dir_lookup_result(&lookup); | |
2917 | ||
c1e8d35e TM |
2918 | if (status) |
2919 | mlog_errno(status); | |
bc13d347 TM |
2920 | |
2921 | return status; | |
2922 | } | |
2923 | ||
92e1d5be | 2924 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2925 | .create = ocfs2_create, |
2926 | .lookup = ocfs2_lookup, | |
2927 | .link = ocfs2_link, | |
2928 | .unlink = ocfs2_unlink, | |
2929 | .rmdir = ocfs2_unlink, | |
2930 | .symlink = ocfs2_symlink, | |
2931 | .mkdir = ocfs2_mkdir, | |
2932 | .mknod = ocfs2_mknod, | |
2933 | .rename = ocfs2_rename, | |
2934 | .setattr = ocfs2_setattr, | |
2935 | .getattr = ocfs2_getattr, | |
d38eb8db | 2936 | .permission = ocfs2_permission, |
cf1d6c76 TY |
2937 | .setxattr = generic_setxattr, |
2938 | .getxattr = generic_getxattr, | |
2939 | .listxattr = ocfs2_listxattr, | |
2940 | .removexattr = generic_removexattr, | |
55f4946e | 2941 | .fiemap = ocfs2_fiemap, |
4e34e719 | 2942 | .get_acl = ocfs2_iop_get_acl, |
702e5bc6 | 2943 | .set_acl = ocfs2_iop_set_acl, |
ccd979bd | 2944 | }; |