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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))) | |
06ee5c75 JQ |
109 | #define OCFS2_DIO_ORPHAN_PREFIX "dio-" |
110 | #define OCFS2_DIO_ORPHAN_PREFIX_LEN 4 | |
ccd979bd MF |
111 | |
112 | static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry, | |
00cd8dd3 | 113 | unsigned int flags) |
ccd979bd MF |
114 | { |
115 | int status; | |
116 | u64 blkno; | |
ccd979bd MF |
117 | struct inode *inode = NULL; |
118 | struct dentry *ret; | |
ccd979bd MF |
119 | struct ocfs2_inode_info *oi; |
120 | ||
8990e44a TM |
121 | trace_ocfs2_lookup(dir, dentry, dentry->d_name.len, |
122 | dentry->d_name.name, | |
123 | (unsigned long long)OCFS2_I(dir)->ip_blkno, 0); | |
ccd979bd MF |
124 | |
125 | if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) { | |
126 | ret = ERR_PTR(-ENAMETOOLONG); | |
127 | goto bail; | |
128 | } | |
129 | ||
cb25797d | 130 | status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT); |
ccd979bd MF |
131 | if (status < 0) { |
132 | if (status != -ENOENT) | |
133 | mlog_errno(status); | |
134 | ret = ERR_PTR(status); | |
135 | goto bail; | |
136 | } | |
137 | ||
be94d117 MF |
138 | status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name, |
139 | dentry->d_name.len, &blkno); | |
ccd979bd MF |
140 | if (status < 0) |
141 | goto bail_add; | |
142 | ||
5fa0613e | 143 | inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0); |
ccd979bd | 144 | if (IS_ERR(inode)) { |
ccd979bd MF |
145 | ret = ERR_PTR(-EACCES); |
146 | goto bail_unlock; | |
147 | } | |
148 | ||
149 | oi = OCFS2_I(inode); | |
150 | /* Clear any orphaned state... If we were able to look up the | |
151 | * inode from a directory, it certainly can't be orphaned. We | |
152 | * might have the bad state from a node which intended to | |
153 | * orphan this inode but crashed before it could commit the | |
154 | * unlink. */ | |
155 | spin_lock(&oi->ip_lock); | |
156 | oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED; | |
ccd979bd MF |
157 | spin_unlock(&oi->ip_lock); |
158 | ||
159 | bail_add: | |
ccd979bd MF |
160 | ret = d_splice_alias(inode, dentry); |
161 | ||
379dfe9d MF |
162 | if (inode) { |
163 | /* | |
164 | * If d_splice_alias() finds a DCACHE_DISCONNECTED | |
165 | * dentry, it will d_move() it on top of ourse. The | |
166 | * return value will indicate this however, so in | |
167 | * those cases, we switch them around for the locking | |
168 | * code. | |
169 | * | |
170 | * NOTE: This dentry already has ->d_op set from | |
171 | * ocfs2_get_parent() and ocfs2_get_dentry() | |
172 | */ | |
d3556bab | 173 | if (!IS_ERR_OR_NULL(ret)) |
379dfe9d MF |
174 | dentry = ret; |
175 | ||
176 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
0027dd5b | 177 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
178 | if (status) { |
179 | mlog_errno(status); | |
180 | ret = ERR_PTR(status); | |
181 | goto bail_unlock; | |
182 | } | |
5e98d492 GR |
183 | } else |
184 | ocfs2_dentry_attach_gen(dentry); | |
379dfe9d | 185 | |
ccd979bd MF |
186 | bail_unlock: |
187 | /* Don't drop the cluster lock until *after* the d_add -- | |
188 | * unlink on another node will message us to remove that | |
189 | * dentry under this lock so otherwise we can race this with | |
34d024f8 | 190 | * the downconvert thread and have a stale dentry. */ |
e63aecb6 | 191 | ocfs2_inode_unlock(dir, 0); |
ccd979bd MF |
192 | |
193 | bail: | |
ccd979bd | 194 | |
8990e44a | 195 | trace_ocfs2_lookup_ret(ret); |
ccd979bd MF |
196 | |
197 | return ret; | |
198 | } | |
199 | ||
67697cbd | 200 | static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode) |
f5d36202 TY |
201 | { |
202 | struct inode *inode; | |
203 | ||
204 | inode = new_inode(dir->i_sb); | |
205 | if (!inode) { | |
206 | mlog(ML_ERROR, "new_inode failed!\n"); | |
207 | return NULL; | |
208 | } | |
209 | ||
210 | /* populate as many fields early on as possible - many of | |
211 | * these are used by the support functions here and in | |
212 | * callers. */ | |
213 | if (S_ISDIR(mode)) | |
bfe86848 | 214 | set_nlink(inode, 2); |
75fe0a24 | 215 | inode_init_owner(inode, dir, mode); |
871a2931 | 216 | dquot_initialize(inode); |
f5d36202 TY |
217 | return inode; |
218 | } | |
219 | ||
595297a8 | 220 | static void ocfs2_cleanup_add_entry_failure(struct ocfs2_super *osb, |
221 | struct dentry *dentry, struct inode *inode) | |
222 | { | |
223 | struct ocfs2_dentry_lock *dl = dentry->d_fsdata; | |
224 | ||
225 | ocfs2_simple_drop_lockres(osb, &dl->dl_lockres); | |
226 | ocfs2_lock_res_free(&dl->dl_lockres); | |
227 | BUG_ON(dl->dl_count != 1); | |
228 | spin_lock(&dentry_attach_lock); | |
229 | dentry->d_fsdata = NULL; | |
230 | spin_unlock(&dentry_attach_lock); | |
231 | kfree(dl); | |
232 | iput(inode); | |
233 | } | |
234 | ||
ccd979bd MF |
235 | static int ocfs2_mknod(struct inode *dir, |
236 | struct dentry *dentry, | |
1a67aafb | 237 | umode_t mode, |
ccd979bd MF |
238 | dev_t dev) |
239 | { | |
240 | int status = 0; | |
241 | struct buffer_head *parent_fe_bh = NULL; | |
1fabe148 | 242 | handle_t *handle = NULL; |
ccd979bd MF |
243 | struct ocfs2_super *osb; |
244 | struct ocfs2_dinode *dirfe; | |
245 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
246 | struct inode *inode = NULL; |
247 | struct ocfs2_alloc_context *inode_ac = NULL; | |
248 | struct ocfs2_alloc_context *data_ac = NULL; | |
9b7895ef | 249 | struct ocfs2_alloc_context *meta_ac = NULL; |
534eaddd | 250 | int want_clusters = 0; |
9b7895ef | 251 | int want_meta = 0; |
534eaddd TY |
252 | int xattr_credits = 0; |
253 | struct ocfs2_security_xattr_info si = { | |
254 | .enable = 1, | |
255 | }; | |
a90714c1 | 256 | int did_quota_inode = 0; |
4a12ca3a | 257 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
258 | sigset_t oldset; |
259 | int did_block_signals = 0; | |
702e5bc6 | 260 | struct posix_acl *default_acl = NULL, *acl = NULL; |
595297a8 | 261 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 262 | |
8990e44a TM |
263 | trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
264 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
265 | (unsigned long)dev, mode); | |
ccd979bd | 266 | |
871a2931 | 267 | dquot_initialize(dir); |
907f4554 | 268 | |
ccd979bd MF |
269 | /* get our super block */ |
270 | osb = OCFS2_SB(dir->i_sb); | |
271 | ||
e63aecb6 | 272 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
e3a82138 MF |
273 | if (status < 0) { |
274 | if (status != -ENOENT) | |
275 | mlog_errno(status); | |
276 | return status; | |
277 | } | |
278 | ||
198a1ca3 | 279 | if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) { |
a663e305 MF |
280 | status = -EMLINK; |
281 | goto leave; | |
282 | } | |
283 | ||
ccd979bd | 284 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
198a1ca3 | 285 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
286 | /* can't make a file in a deleted directory. */ |
287 | status = -ENOENT; | |
288 | goto leave; | |
289 | } | |
290 | ||
291 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
292 | dentry->d_name.len); | |
293 | if (status) | |
294 | goto leave; | |
295 | ||
296 | /* get a spot inside the dir. */ | |
297 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
298 | dentry->d_name.name, | |
4a12ca3a | 299 | dentry->d_name.len, &lookup); |
ccd979bd MF |
300 | if (status < 0) { |
301 | mlog_errno(status); | |
302 | goto leave; | |
303 | } | |
304 | ||
305 | /* reserve an inode spot */ | |
da5cbf2f | 306 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
307 | if (status < 0) { |
308 | if (status != -ENOSPC) | |
309 | mlog_errno(status); | |
310 | goto leave; | |
311 | } | |
312 | ||
f5d36202 TY |
313 | inode = ocfs2_get_init_inode(dir, mode); |
314 | if (!inode) { | |
315 | status = -ENOMEM; | |
316 | mlog_errno(status); | |
317 | goto leave; | |
318 | } | |
319 | ||
534eaddd | 320 | /* get security xattr */ |
2a7dba39 | 321 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
322 | if (status) { |
323 | if (status == -EOPNOTSUPP) | |
324 | si.enable = 0; | |
325 | else { | |
326 | mlog_errno(status); | |
327 | goto leave; | |
328 | } | |
329 | } | |
330 | ||
89c38bd0 TY |
331 | /* calculate meta data/clusters for setting security and acl xattr */ |
332 | status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode, | |
9b7895ef MF |
333 | &si, &want_clusters, |
334 | &xattr_credits, &want_meta); | |
89c38bd0 TY |
335 | if (status < 0) { |
336 | mlog_errno(status); | |
337 | goto leave; | |
ccd979bd MF |
338 | } |
339 | ||
534eaddd | 340 | /* Reserve a cluster if creating an extent based directory. */ |
9b7895ef | 341 | if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) { |
534eaddd TY |
342 | want_clusters += 1; |
343 | ||
9b7895ef | 344 | /* Dir indexing requires extra space as well */ |
4ed8a6bb | 345 | if (ocfs2_supports_indexed_dirs(osb)) |
9b7895ef | 346 | want_meta++; |
9b7895ef MF |
347 | } |
348 | ||
349 | status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac); | |
350 | if (status < 0) { | |
351 | if (status != -ENOSPC) | |
352 | mlog_errno(status); | |
353 | goto leave; | |
354 | } | |
355 | ||
534eaddd TY |
356 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); |
357 | if (status < 0) { | |
358 | if (status != -ENOSPC) | |
359 | mlog_errno(status); | |
360 | goto leave; | |
361 | } | |
362 | ||
702e5bc6 CH |
363 | status = posix_acl_create(dir, &mode, &default_acl, &acl); |
364 | if (status) { | |
365 | mlog_errno(status); | |
366 | goto leave; | |
367 | } | |
368 | ||
9b7895ef MF |
369 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, |
370 | S_ISDIR(mode), | |
371 | xattr_credits)); | |
ccd979bd MF |
372 | if (IS_ERR(handle)) { |
373 | status = PTR_ERR(handle); | |
374 | handle = NULL; | |
375 | mlog_errno(status); | |
376 | goto leave; | |
377 | } | |
378 | ||
547ba7c8 JB |
379 | /* Starting to change things, restart is no longer possible. */ |
380 | ocfs2_block_signals(&oldset); | |
381 | did_block_signals = 1; | |
382 | ||
63936dda CH |
383 | status = dquot_alloc_inode(inode); |
384 | if (status) | |
a90714c1 | 385 | goto leave; |
a90714c1 JK |
386 | did_quota_inode = 1; |
387 | ||
ccd979bd | 388 | /* do the real work now. */ |
19bd341f | 389 | status = ocfs2_mknod_locked(osb, dir, inode, dev, |
ccd979bd | 390 | &new_fe_bh, parent_fe_bh, handle, |
f5d36202 | 391 | inode_ac); |
ccd979bd MF |
392 | if (status < 0) { |
393 | mlog_errno(status); | |
394 | goto leave; | |
395 | } | |
396 | ||
397 | if (S_ISDIR(mode)) { | |
398 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, | |
9b7895ef | 399 | new_fe_bh, data_ac, meta_ac); |
ccd979bd MF |
400 | if (status < 0) { |
401 | mlog_errno(status); | |
402 | goto leave; | |
403 | } | |
404 | ||
0cf2f763 JB |
405 | status = ocfs2_journal_access_di(handle, INODE_CACHE(dir), |
406 | parent_fe_bh, | |
13723d00 | 407 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
408 | if (status < 0) { |
409 | mlog_errno(status); | |
410 | goto leave; | |
411 | } | |
198a1ca3 | 412 | ocfs2_add_links_count(dirfe, 1); |
ec20cec7 | 413 | ocfs2_journal_dirty(handle, parent_fe_bh); |
d8c76e6f | 414 | inc_nlink(dir); |
ccd979bd MF |
415 | } |
416 | ||
702e5bc6 CH |
417 | if (default_acl) { |
418 | status = ocfs2_set_acl(handle, inode, new_fe_bh, | |
419 | ACL_TYPE_DEFAULT, default_acl, | |
420 | meta_ac, data_ac); | |
421 | } | |
422 | if (!status && acl) { | |
423 | status = ocfs2_set_acl(handle, inode, new_fe_bh, | |
424 | ACL_TYPE_ACCESS, acl, | |
425 | meta_ac, data_ac); | |
426 | } | |
427 | ||
89c38bd0 TY |
428 | if (status < 0) { |
429 | mlog_errno(status); | |
430 | goto leave; | |
431 | } | |
432 | ||
534eaddd TY |
433 | if (si.enable) { |
434 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
9b7895ef | 435 | meta_ac, data_ac); |
534eaddd TY |
436 | if (status < 0) { |
437 | mlog_errno(status); | |
438 | goto leave; | |
439 | } | |
440 | } | |
441 | ||
a9743fcd MF |
442 | /* |
443 | * Do this before adding the entry to the directory. We add | |
444 | * also set d_op after success so that ->d_iput() will cleanup | |
445 | * the dentry lock even if ocfs2_add_entry() fails below. | |
446 | */ | |
447 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
448 | OCFS2_I(dir)->ip_blkno); | |
449 | if (status) { | |
ccd979bd MF |
450 | mlog_errno(status); |
451 | goto leave; | |
452 | } | |
453 | ||
595297a8 | 454 | dl = dentry->d_fsdata; |
455 | ||
a9743fcd MF |
456 | status = ocfs2_add_entry(handle, dentry, inode, |
457 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
458 | &lookup); | |
459 | if (status < 0) { | |
379dfe9d MF |
460 | mlog_errno(status); |
461 | goto leave; | |
462 | } | |
463 | ||
ccd979bd | 464 | insert_inode_hash(inode); |
ccd979bd MF |
465 | d_instantiate(dentry, inode); |
466 | status = 0; | |
467 | leave: | |
702e5bc6 CH |
468 | if (default_acl) |
469 | posix_acl_release(default_acl); | |
470 | if (acl) | |
471 | posix_acl_release(acl); | |
a90714c1 | 472 | if (status < 0 && did_quota_inode) |
63936dda | 473 | dquot_free_inode(inode); |
ccd979bd | 474 | if (handle) |
02dc1af4 | 475 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 476 | |
e63aecb6 | 477 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
478 | if (did_block_signals) |
479 | ocfs2_unblock_signals(&oldset); | |
e3a82138 | 480 | |
a81cb88b | 481 | brelse(new_fe_bh); |
a81cb88b | 482 | brelse(parent_fe_bh); |
534eaddd | 483 | kfree(si.value); |
ccd979bd | 484 | |
4a12ca3a MF |
485 | ocfs2_free_dir_lookup_result(&lookup); |
486 | ||
ccd979bd MF |
487 | if (inode_ac) |
488 | ocfs2_free_alloc_context(inode_ac); | |
489 | ||
490 | if (data_ac) | |
491 | ocfs2_free_alloc_context(data_ac); | |
492 | ||
9b7895ef MF |
493 | if (meta_ac) |
494 | ocfs2_free_alloc_context(meta_ac); | |
534eaddd | 495 | |
062d3403 LD |
496 | /* |
497 | * We should call iput after the i_mutex of the bitmap been | |
498 | * unlocked in ocfs2_free_alloc_context, or the | |
499 | * ocfs2_delete_inode will mutex_lock again. | |
500 | */ | |
501 | if ((status < 0) && inode) { | |
595297a8 | 502 | if (dl) |
503 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
504 | ||
062d3403 LD |
505 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
506 | clear_nlink(inode); | |
507 | iput(inode); | |
508 | } | |
509 | ||
c1e8d35e TM |
510 | if (status) |
511 | mlog_errno(status); | |
ccd979bd MF |
512 | |
513 | return status; | |
514 | } | |
515 | ||
021960ca MF |
516 | static int __ocfs2_mknod_locked(struct inode *dir, |
517 | struct inode *inode, | |
518 | dev_t dev, | |
519 | struct buffer_head **new_fe_bh, | |
520 | struct buffer_head *parent_fe_bh, | |
521 | handle_t *handle, | |
522 | struct ocfs2_alloc_context *inode_ac, | |
523 | u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit) | |
ccd979bd MF |
524 | { |
525 | int status = 0; | |
021960ca | 526 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
ccd979bd MF |
527 | struct ocfs2_dinode *fe = NULL; |
528 | struct ocfs2_extent_list *fel; | |
9b7895ef | 529 | u16 feat; |
2931cdcb | 530 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
ccd979bd | 531 | |
ccd979bd | 532 | *new_fe_bh = NULL; |
ccd979bd | 533 | |
ccd979bd MF |
534 | /* populate as many fields early on as possible - many of |
535 | * these are used by the support functions here and in | |
536 | * callers. */ | |
537 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
538 | OCFS2_I(inode)->ip_blkno = fe_blkno; | |
ccd979bd MF |
539 | spin_lock(&osb->osb_lock); |
540 | inode->i_generation = osb->s_next_generation++; | |
541 | spin_unlock(&osb->osb_lock); | |
542 | ||
543 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
544 | if (!*new_fe_bh) { | |
7391a294 | 545 | status = -ENOMEM; |
ccd979bd MF |
546 | mlog_errno(status); |
547 | goto leave; | |
548 | } | |
8cb471e8 | 549 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
ccd979bd | 550 | |
0cf2f763 JB |
551 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
552 | *new_fe_bh, | |
13723d00 | 553 | OCFS2_JOURNAL_ACCESS_CREATE); |
ccd979bd MF |
554 | if (status < 0) { |
555 | mlog_errno(status); | |
556 | goto leave; | |
557 | } | |
558 | ||
559 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
560 | memset(fe, 0, osb->sb->s_blocksize); | |
561 | ||
562 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
563 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
564 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
2b6cb576 | 565 | fe->i_suballoc_loc = cpu_to_le64(suballoc_loc); |
ccd979bd | 566 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); |
4d0ddb2c | 567 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
2c034176 EB |
568 | fe->i_uid = cpu_to_le32(i_uid_read(inode)); |
569 | fe->i_gid = cpu_to_le32(i_gid_read(inode)); | |
f5d36202 TY |
570 | fe->i_mode = cpu_to_le16(inode->i_mode); |
571 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 572 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
198a1ca3 MF |
573 | |
574 | ocfs2_set_links_count(fe, inode->i_nlink); | |
ccd979bd MF |
575 | |
576 | fe->i_last_eb_blk = 0; | |
577 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
13eb9887 | 578 | fe->i_flags |= cpu_to_le32(OCFS2_VALID_FL); |
ccd979bd MF |
579 | fe->i_atime = fe->i_ctime = fe->i_mtime = |
580 | cpu_to_le64(CURRENT_TIME.tv_sec); | |
581 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = | |
582 | cpu_to_le32(CURRENT_TIME.tv_nsec); | |
583 | fe->i_dtime = 0; | |
584 | ||
5b6a3a2b | 585 | /* |
9b7895ef MF |
586 | * If supported, directories start with inline data. If inline |
587 | * isn't supported, but indexing is, we start them as indexed. | |
5b6a3a2b | 588 | */ |
9b7895ef | 589 | feat = le16_to_cpu(fe->i_dyn_features); |
f5d36202 | 590 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
591 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
592 | ||
d9ae49d6 TY |
593 | fe->id2.i_data.id_count = cpu_to_le16( |
594 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); | |
5b6a3a2b MF |
595 | } else { |
596 | fel = &fe->id2.i_list; | |
597 | fel->l_tree_depth = 0; | |
598 | fel->l_next_free_rec = 0; | |
599 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
600 | } | |
ccd979bd | 601 | |
ec20cec7 | 602 | ocfs2_journal_dirty(handle, *new_fe_bh); |
ccd979bd | 603 | |
b657c95c | 604 | ocfs2_populate_inode(inode, fe, 1); |
0cf2f763 | 605 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
c271c5c2 SM |
606 | if (!ocfs2_mount_local(osb)) { |
607 | status = ocfs2_create_new_inode_locks(inode); | |
608 | if (status < 0) | |
609 | mlog_errno(status); | |
610 | } | |
ccd979bd | 611 | |
2931cdcb DW |
612 | oi->i_sync_tid = handle->h_transaction->t_tid; |
613 | oi->i_datasync_tid = handle->h_transaction->t_tid; | |
614 | ||
ccd979bd MF |
615 | leave: |
616 | if (status < 0) { | |
617 | if (*new_fe_bh) { | |
618 | brelse(*new_fe_bh); | |
619 | *new_fe_bh = NULL; | |
620 | } | |
ccd979bd MF |
621 | } |
622 | ||
c1e8d35e TM |
623 | if (status) |
624 | mlog_errno(status); | |
ccd979bd MF |
625 | return status; |
626 | } | |
627 | ||
021960ca MF |
628 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
629 | struct inode *dir, | |
630 | struct inode *inode, | |
631 | dev_t dev, | |
632 | struct buffer_head **new_fe_bh, | |
633 | struct buffer_head *parent_fe_bh, | |
634 | handle_t *handle, | |
635 | struct ocfs2_alloc_context *inode_ac) | |
636 | { | |
637 | int status = 0; | |
638 | u64 suballoc_loc, fe_blkno = 0; | |
639 | u16 suballoc_bit; | |
640 | ||
641 | *new_fe_bh = NULL; | |
642 | ||
643 | status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh, | |
644 | inode_ac, &suballoc_loc, | |
645 | &suballoc_bit, &fe_blkno); | |
646 | if (status < 0) { | |
647 | mlog_errno(status); | |
648 | return status; | |
649 | } | |
650 | ||
651 | return __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh, | |
652 | parent_fe_bh, handle, inode_ac, | |
653 | fe_blkno, suballoc_loc, suballoc_bit); | |
654 | } | |
655 | ||
ccd979bd MF |
656 | static int ocfs2_mkdir(struct inode *dir, |
657 | struct dentry *dentry, | |
18bb1db3 | 658 | umode_t mode) |
ccd979bd MF |
659 | { |
660 | int ret; | |
661 | ||
8990e44a TM |
662 | trace_ocfs2_mkdir(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
663 | OCFS2_I(dir)->ip_blkno, mode); | |
ccd979bd | 664 | ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0); |
c1e8d35e TM |
665 | if (ret) |
666 | mlog_errno(ret); | |
ccd979bd MF |
667 | |
668 | return ret; | |
669 | } | |
670 | ||
671 | static int ocfs2_create(struct inode *dir, | |
672 | struct dentry *dentry, | |
4acdaf27 | 673 | umode_t mode, |
ebfc3b49 | 674 | bool excl) |
ccd979bd MF |
675 | { |
676 | int ret; | |
677 | ||
8990e44a TM |
678 | trace_ocfs2_create(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
679 | (unsigned long long)OCFS2_I(dir)->ip_blkno, mode); | |
ccd979bd | 680 | ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0); |
c1e8d35e TM |
681 | if (ret) |
682 | mlog_errno(ret); | |
ccd979bd MF |
683 | |
684 | return ret; | |
685 | } | |
686 | ||
687 | static int ocfs2_link(struct dentry *old_dentry, | |
688 | struct inode *dir, | |
689 | struct dentry *dentry) | |
690 | { | |
1fabe148 | 691 | handle_t *handle; |
2b0143b5 DH |
692 | struct inode *inode = d_inode(old_dentry); |
693 | struct inode *old_dir = d_inode(old_dentry->d_parent); | |
ccd979bd MF |
694 | int err; |
695 | struct buffer_head *fe_bh = NULL; | |
53dc20b9 | 696 | struct buffer_head *old_dir_bh = NULL; |
ccd979bd | 697 | struct buffer_head *parent_fe_bh = NULL; |
ccd979bd MF |
698 | struct ocfs2_dinode *fe = NULL; |
699 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
4a12ca3a | 700 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 | 701 | sigset_t oldset; |
0e048316 | 702 | u64 old_de_ino; |
ccd979bd | 703 | |
8990e44a TM |
704 | trace_ocfs2_link((unsigned long long)OCFS2_I(inode)->ip_blkno, |
705 | old_dentry->d_name.len, old_dentry->d_name.name, | |
706 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 707 | |
123a9643 MF |
708 | if (S_ISDIR(inode->i_mode)) |
709 | return -EPERM; | |
ccd979bd | 710 | |
871a2931 | 711 | dquot_initialize(dir); |
907f4554 | 712 | |
53dc20b9 X |
713 | err = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
714 | &parent_fe_bh, dir, 0); | |
ccd979bd MF |
715 | if (err < 0) { |
716 | if (err != -ENOENT) | |
717 | mlog_errno(err); | |
123a9643 | 718 | return err; |
ccd979bd MF |
719 | } |
720 | ||
53dc20b9 X |
721 | /* make sure both dirs have bhs |
722 | * get an extra ref on old_dir_bh if old==new */ | |
723 | if (!parent_fe_bh) { | |
724 | if (old_dir_bh) { | |
725 | parent_fe_bh = old_dir_bh; | |
726 | get_bh(parent_fe_bh); | |
727 | } else { | |
728 | mlog(ML_ERROR, "%s: no old_dir_bh!\n", osb->uuid_str); | |
729 | err = -EIO; | |
730 | goto out; | |
731 | } | |
732 | } | |
733 | ||
0f62de2c TY |
734 | if (!dir->i_nlink) { |
735 | err = -ENOENT; | |
123a9643 | 736 | goto out; |
0f62de2c TY |
737 | } |
738 | ||
53dc20b9 | 739 | err = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
0e048316 X |
740 | old_dentry->d_name.len, &old_de_ino); |
741 | if (err) { | |
742 | err = -ENOENT; | |
743 | goto out; | |
744 | } | |
745 | ||
746 | /* | |
747 | * Check whether another node removed the source inode while we | |
748 | * were in the vfs. | |
749 | */ | |
750 | if (old_de_ino != OCFS2_I(inode)->ip_blkno) { | |
751 | err = -ENOENT; | |
752 | goto out; | |
753 | } | |
754 | ||
ccd979bd MF |
755 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
756 | dentry->d_name.len); | |
757 | if (err) | |
123a9643 | 758 | goto out; |
ccd979bd MF |
759 | |
760 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
761 | dentry->d_name.name, | |
4a12ca3a | 762 | dentry->d_name.len, &lookup); |
ccd979bd MF |
763 | if (err < 0) { |
764 | mlog_errno(err); | |
123a9643 | 765 | goto out; |
ccd979bd MF |
766 | } |
767 | ||
e63aecb6 | 768 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
769 | if (err < 0) { |
770 | if (err != -ENOENT) | |
771 | mlog_errno(err); | |
123a9643 | 772 | goto out; |
ccd979bd MF |
773 | } |
774 | ||
775 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
198a1ca3 | 776 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
ccd979bd | 777 | err = -EMLINK; |
123a9643 | 778 | goto out_unlock_inode; |
ccd979bd MF |
779 | } |
780 | ||
a90714c1 | 781 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
782 | if (IS_ERR(handle)) { |
783 | err = PTR_ERR(handle); | |
784 | handle = NULL; | |
785 | mlog_errno(err); | |
123a9643 | 786 | goto out_unlock_inode; |
ccd979bd MF |
787 | } |
788 | ||
547ba7c8 JB |
789 | /* Starting to change things, restart is no longer possible. */ |
790 | ocfs2_block_signals(&oldset); | |
791 | ||
0cf2f763 | 792 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 793 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
794 | if (err < 0) { |
795 | mlog_errno(err); | |
123a9643 | 796 | goto out_commit; |
ccd979bd MF |
797 | } |
798 | ||
d8c76e6f | 799 | inc_nlink(inode); |
ccd979bd | 800 | inode->i_ctime = CURRENT_TIME; |
198a1ca3 | 801 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
802 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
803 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
ec20cec7 | 804 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd MF |
805 | |
806 | err = ocfs2_add_entry(handle, dentry, inode, | |
807 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 808 | parent_fe_bh, &lookup); |
ccd979bd | 809 | if (err) { |
198a1ca3 | 810 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 811 | drop_nlink(inode); |
ccd979bd | 812 | mlog_errno(err); |
123a9643 | 813 | goto out_commit; |
ccd979bd MF |
814 | } |
815 | ||
0027dd5b | 816 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
817 | if (err) { |
818 | mlog_errno(err); | |
123a9643 | 819 | goto out_commit; |
379dfe9d MF |
820 | } |
821 | ||
7de9c6ee | 822 | ihold(inode); |
ccd979bd | 823 | d_instantiate(dentry, inode); |
123a9643 MF |
824 | |
825 | out_commit: | |
02dc1af4 | 826 | ocfs2_commit_trans(osb, handle); |
547ba7c8 | 827 | ocfs2_unblock_signals(&oldset); |
123a9643 | 828 | out_unlock_inode: |
e63aecb6 | 829 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
830 | |
831 | out: | |
53dc20b9 | 832 | ocfs2_double_unlock(old_dir, dir); |
123a9643 | 833 | |
a81cb88b MF |
834 | brelse(fe_bh); |
835 | brelse(parent_fe_bh); | |
53dc20b9 | 836 | brelse(old_dir_bh); |
ccd979bd | 837 | |
4a12ca3a MF |
838 | ocfs2_free_dir_lookup_result(&lookup); |
839 | ||
c1e8d35e TM |
840 | if (err) |
841 | mlog_errno(err); | |
ccd979bd MF |
842 | |
843 | return err; | |
844 | } | |
845 | ||
379dfe9d MF |
846 | /* |
847 | * Takes and drops an exclusive lock on the given dentry. This will | |
848 | * force other nodes to drop it. | |
849 | */ | |
850 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
851 | { | |
852 | int ret; | |
853 | ||
854 | ret = ocfs2_dentry_lock(dentry, 1); | |
855 | if (ret) | |
856 | mlog_errno(ret); | |
857 | else | |
858 | ocfs2_dentry_unlock(dentry, 1); | |
859 | ||
860 | return ret; | |
861 | } | |
862 | ||
b5a8bb71 | 863 | static inline int ocfs2_inode_is_unlinkable(struct inode *inode) |
17ff7856 MF |
864 | { |
865 | if (S_ISDIR(inode->i_mode)) { | |
866 | if (inode->i_nlink == 2) | |
867 | return 1; | |
868 | return 0; | |
869 | } | |
870 | ||
871 | if (inode->i_nlink == 1) | |
872 | return 1; | |
873 | return 0; | |
874 | } | |
875 | ||
ccd979bd MF |
876 | static int ocfs2_unlink(struct inode *dir, |
877 | struct dentry *dentry) | |
878 | { | |
879 | int status; | |
30a4f5e8 | 880 | int child_locked = 0; |
b5a8bb71 | 881 | bool is_unlinkable = false; |
2b0143b5 | 882 | struct inode *inode = d_inode(dentry); |
5098c27b | 883 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
884 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
885 | u64 blkno; | |
886 | struct ocfs2_dinode *fe = NULL; | |
887 | struct buffer_head *fe_bh = NULL; | |
888 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 889 | handle_t *handle = NULL; |
ccd979bd | 890 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
891 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
892 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd | 893 | |
8990e44a TM |
894 | trace_ocfs2_unlink(dir, dentry, dentry->d_name.len, |
895 | dentry->d_name.name, | |
896 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
897 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 898 | |
871a2931 | 899 | dquot_initialize(dir); |
907f4554 | 900 | |
2b0143b5 | 901 | BUG_ON(d_inode(dentry->d_parent) != dir); |
ccd979bd | 902 | |
8990e44a | 903 | if (inode == osb->root_inode) |
30a4f5e8 | 904 | return -EPERM; |
ccd979bd | 905 | |
cb25797d JK |
906 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
907 | OI_LS_PARENT); | |
ccd979bd MF |
908 | if (status < 0) { |
909 | if (status != -ENOENT) | |
910 | mlog_errno(status); | |
30a4f5e8 | 911 | return status; |
ccd979bd MF |
912 | } |
913 | ||
914 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
915 | dentry->d_name.len, &blkno, dir, |
916 | &lookup); | |
ccd979bd MF |
917 | if (status < 0) { |
918 | if (status != -ENOENT) | |
919 | mlog_errno(status); | |
920 | goto leave; | |
921 | } | |
922 | ||
923 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
924 | status = -ENOENT; | |
925 | ||
8990e44a TM |
926 | trace_ocfs2_unlink_noent( |
927 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
928 | (unsigned long long)blkno, | |
929 | OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
930 | goto leave; |
931 | } | |
932 | ||
e63aecb6 | 933 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
934 | if (status < 0) { |
935 | if (status != -ENOENT) | |
936 | mlog_errno(status); | |
937 | goto leave; | |
938 | } | |
30a4f5e8 | 939 | child_locked = 1; |
ccd979bd MF |
940 | |
941 | if (S_ISDIR(inode->i_mode)) { | |
b80b549c | 942 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
ccd979bd MF |
943 | status = -ENOTEMPTY; |
944 | goto leave; | |
945 | } | |
946 | } | |
947 | ||
379dfe9d | 948 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 949 | if (status < 0) { |
34d024f8 | 950 | /* This remote delete should succeed under all normal |
ccd979bd MF |
951 | * circumstances. */ |
952 | mlog_errno(status); | |
953 | goto leave; | |
954 | } | |
955 | ||
b5a8bb71 | 956 | if (ocfs2_inode_is_unlinkable(inode)) { |
19bd341f TM |
957 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
958 | OCFS2_I(inode)->ip_blkno, | |
06ee5c75 JQ |
959 | orphan_name, &orphan_insert, |
960 | false); | |
ccd979bd MF |
961 | if (status < 0) { |
962 | mlog_errno(status); | |
963 | goto leave; | |
964 | } | |
b5a8bb71 | 965 | is_unlinkable = true; |
ccd979bd MF |
966 | } |
967 | ||
a90714c1 | 968 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
969 | if (IS_ERR(handle)) { |
970 | status = PTR_ERR(handle); | |
971 | handle = NULL; | |
972 | mlog_errno(status); | |
973 | goto leave; | |
974 | } | |
975 | ||
0cf2f763 | 976 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 977 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
978 | if (status < 0) { |
979 | mlog_errno(status); | |
980 | goto leave; | |
981 | } | |
982 | ||
983 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
984 | ||
ccd979bd | 985 | /* delete the name from the parent dir */ |
4a12ca3a | 986 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
987 | if (status < 0) { |
988 | mlog_errno(status); | |
989 | goto leave; | |
990 | } | |
991 | ||
17ff7856 MF |
992 | if (S_ISDIR(inode->i_mode)) |
993 | drop_nlink(inode); | |
994 | drop_nlink(inode); | |
198a1ca3 | 995 | ocfs2_set_links_count(fe, inode->i_nlink); |
ec20cec7 | 996 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd | 997 | |
592282cf MF |
998 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; |
999 | if (S_ISDIR(inode->i_mode)) | |
17ff7856 | 1000 | drop_nlink(dir); |
592282cf MF |
1001 | |
1002 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
1003 | if (status < 0) { | |
1004 | mlog_errno(status); | |
1005 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 1006 | inc_nlink(dir); |
b5a8bb71 YL |
1007 | goto leave; |
1008 | } | |
1009 | ||
1010 | if (is_unlinkable) { | |
1011 | status = ocfs2_orphan_add(osb, handle, inode, fe_bh, | |
06ee5c75 | 1012 | orphan_name, &orphan_insert, orphan_dir, false); |
b5a8bb71 YL |
1013 | if (status < 0) |
1014 | mlog_errno(status); | |
ccd979bd MF |
1015 | } |
1016 | ||
1017 | leave: | |
ccd979bd | 1018 | if (handle) |
02dc1af4 | 1019 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1020 | |
30a4f5e8 | 1021 | if (child_locked) |
e63aecb6 | 1022 | ocfs2_inode_unlock(inode, 1); |
30a4f5e8 | 1023 | |
e63aecb6 | 1024 | ocfs2_inode_unlock(dir, 1); |
30a4f5e8 | 1025 | |
5098c27b MF |
1026 | if (orphan_dir) { |
1027 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1028 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
1029 | mutex_unlock(&orphan_dir->i_mutex); |
1030 | iput(orphan_dir); | |
1031 | } | |
1032 | ||
a81cb88b | 1033 | brelse(fe_bh); |
a81cb88b | 1034 | brelse(parent_node_bh); |
4a12ca3a MF |
1035 | |
1036 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1037 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd | 1038 | |
f5b25855 | 1039 | if (status && (status != -ENOTEMPTY) && (status != -ENOENT)) |
c1e8d35e | 1040 | mlog_errno(status); |
ccd979bd MF |
1041 | |
1042 | return status; | |
1043 | } | |
1044 | ||
f7a14f32 YJ |
1045 | static int ocfs2_check_if_ancestor(struct ocfs2_super *osb, |
1046 | u64 src_inode_no, u64 dest_inode_no) | |
1047 | { | |
1048 | int ret = 0, i = 0; | |
1049 | u64 parent_inode_no = 0; | |
1050 | u64 child_inode_no = src_inode_no; | |
1051 | struct inode *child_inode; | |
1052 | ||
1053 | #define MAX_LOOKUP_TIMES 32 | |
1054 | while (1) { | |
1055 | child_inode = ocfs2_iget(osb, child_inode_no, 0, 0); | |
1056 | if (IS_ERR(child_inode)) { | |
1057 | ret = PTR_ERR(child_inode); | |
1058 | break; | |
1059 | } | |
1060 | ||
1061 | ret = ocfs2_inode_lock(child_inode, NULL, 0); | |
1062 | if (ret < 0) { | |
1063 | iput(child_inode); | |
1064 | if (ret != -ENOENT) | |
1065 | mlog_errno(ret); | |
1066 | break; | |
1067 | } | |
1068 | ||
1069 | ret = ocfs2_lookup_ino_from_name(child_inode, "..", 2, | |
1070 | &parent_inode_no); | |
1071 | ocfs2_inode_unlock(child_inode, 0); | |
1072 | iput(child_inode); | |
1073 | if (ret < 0) { | |
1074 | ret = -ENOENT; | |
1075 | break; | |
1076 | } | |
1077 | ||
1078 | if (parent_inode_no == dest_inode_no) { | |
1079 | ret = 1; | |
1080 | break; | |
1081 | } | |
1082 | ||
1083 | if (parent_inode_no == osb->root_inode->i_ino) { | |
1084 | ret = 0; | |
1085 | break; | |
1086 | } | |
1087 | ||
1088 | child_inode_no = parent_inode_no; | |
1089 | ||
1090 | if (++i >= MAX_LOOKUP_TIMES) { | |
1091 | mlog(ML_NOTICE, "max lookup times reached, filesystem " | |
1092 | "may have nested directories, " | |
1093 | "src inode: %llu, dest inode: %llu.\n", | |
1094 | (unsigned long long)src_inode_no, | |
1095 | (unsigned long long)dest_inode_no); | |
1096 | ret = 0; | |
1097 | break; | |
1098 | } | |
1099 | } | |
1100 | ||
1101 | return ret; | |
1102 | } | |
1103 | ||
ccd979bd | 1104 | /* |
53dc20b9 | 1105 | * The only place this should be used is rename and link! |
ccd979bd MF |
1106 | * if they have the same id, then the 1st one is the only one locked. |
1107 | */ | |
1108 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
1109 | struct buffer_head **bh1, |
1110 | struct inode *inode1, | |
1111 | struct buffer_head **bh2, | |
53dc20b9 X |
1112 | struct inode *inode2, |
1113 | int rename) | |
ccd979bd MF |
1114 | { |
1115 | int status; | |
f7a14f32 | 1116 | int inode1_is_ancestor, inode2_is_ancestor; |
ccd979bd MF |
1117 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); |
1118 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
ccd979bd | 1119 | |
8990e44a TM |
1120 | trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno, |
1121 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 1122 | |
ccd979bd MF |
1123 | if (*bh1) |
1124 | *bh1 = NULL; | |
1125 | if (*bh2) | |
1126 | *bh2 = NULL; | |
1127 | ||
f7a14f32 YJ |
1128 | /* we always want to lock the one with the lower lockid first. |
1129 | * and if they are nested, we lock ancestor first */ | |
ccd979bd | 1130 | if (oi1->ip_blkno != oi2->ip_blkno) { |
f7a14f32 YJ |
1131 | inode1_is_ancestor = ocfs2_check_if_ancestor(osb, oi2->ip_blkno, |
1132 | oi1->ip_blkno); | |
1133 | if (inode1_is_ancestor < 0) { | |
1134 | status = inode1_is_ancestor; | |
1135 | goto bail; | |
1136 | } | |
1137 | ||
1138 | inode2_is_ancestor = ocfs2_check_if_ancestor(osb, oi1->ip_blkno, | |
1139 | oi2->ip_blkno); | |
1140 | if (inode2_is_ancestor < 0) { | |
1141 | status = inode2_is_ancestor; | |
1142 | goto bail; | |
1143 | } | |
1144 | ||
1145 | if ((inode1_is_ancestor == 1) || | |
1146 | (oi1->ip_blkno < oi2->ip_blkno && | |
1147 | inode2_is_ancestor == 0)) { | |
ccd979bd | 1148 | /* switch id1 and id2 around */ |
ab1ba021 FF |
1149 | swap(bh2, bh1); |
1150 | swap(inode2, inode1); | |
ccd979bd MF |
1151 | } |
1152 | /* lock id2 */ | |
cb25797d | 1153 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
53dc20b9 | 1154 | rename == 1 ? OI_LS_RENAME1 : OI_LS_PARENT); |
ccd979bd MF |
1155 | if (status < 0) { |
1156 | if (status != -ENOENT) | |
1157 | mlog_errno(status); | |
1158 | goto bail; | |
1159 | } | |
1160 | } | |
8d5596c6 | 1161 | |
ccd979bd | 1162 | /* lock id1 */ |
53dc20b9 X |
1163 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, |
1164 | rename == 1 ? OI_LS_RENAME2 : OI_LS_PARENT); | |
ccd979bd | 1165 | if (status < 0) { |
8d5596c6 MF |
1166 | /* |
1167 | * An error return must mean that no cluster locks | |
1168 | * were held on function exit. | |
1169 | */ | |
1e6d9153 | 1170 | if (oi1->ip_blkno != oi2->ip_blkno) { |
e63aecb6 | 1171 | ocfs2_inode_unlock(inode2, 1); |
1e6d9153 TM |
1172 | brelse(*bh2); |
1173 | *bh2 = NULL; | |
1174 | } | |
8d5596c6 | 1175 | |
ccd979bd MF |
1176 | if (status != -ENOENT) |
1177 | mlog_errno(status); | |
ccd979bd | 1178 | } |
8d5596c6 | 1179 | |
8990e44a TM |
1180 | trace_ocfs2_double_lock_end( |
1181 | (unsigned long long)OCFS2_I(inode1)->ip_blkno, | |
1182 | (unsigned long long)OCFS2_I(inode2)->ip_blkno); | |
1183 | ||
ccd979bd | 1184 | bail: |
c1e8d35e TM |
1185 | if (status) |
1186 | mlog_errno(status); | |
ccd979bd MF |
1187 | return status; |
1188 | } | |
1189 | ||
8d5596c6 MF |
1190 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
1191 | { | |
e63aecb6 | 1192 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
1193 | |
1194 | if (inode1 != inode2) | |
e63aecb6 | 1195 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1196 | } |
1197 | ||
ccd979bd MF |
1198 | static int ocfs2_rename(struct inode *old_dir, |
1199 | struct dentry *old_dentry, | |
1200 | struct inode *new_dir, | |
1201 | struct dentry *new_dentry) | |
1202 | { | |
4a12ca3a MF |
1203 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1204 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
2b0143b5 DH |
1205 | struct inode *old_inode = d_inode(old_dentry); |
1206 | struct inode *new_inode = d_inode(new_dentry); | |
5098c27b | 1207 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1208 | struct ocfs2_dinode *newfe = NULL; |
1209 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
ccd979bd | 1210 | struct buffer_head *newfe_bh = NULL; |
592282cf | 1211 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd | 1212 | struct ocfs2_super *osb = NULL; |
5b6a3a2b | 1213 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1214 | handle_t *handle = NULL; |
ccd979bd MF |
1215 | struct buffer_head *old_dir_bh = NULL; |
1216 | struct buffer_head *new_dir_bh = NULL; | |
847c9db5 | 1217 | u32 old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1218 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1219 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1220 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1221 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1222 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1223 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
5fb1beb0 | 1224 | bool should_add_orphan = false; |
ccd979bd MF |
1225 | |
1226 | /* At some point it might be nice to break this function up a | |
1227 | * bit. */ | |
1228 | ||
8990e44a TM |
1229 | trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry, |
1230 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1231 | new_dentry->d_name.len, new_dentry->d_name.name); | |
ccd979bd | 1232 | |
871a2931 CH |
1233 | dquot_initialize(old_dir); |
1234 | dquot_initialize(new_dir); | |
907f4554 | 1235 | |
ccd979bd MF |
1236 | osb = OCFS2_SB(old_dir->i_sb); |
1237 | ||
1238 | if (new_inode) { | |
1239 | if (!igrab(new_inode)) | |
1240 | BUG(); | |
1241 | } | |
1242 | ||
1b3c3714 | 1243 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1244 | * a/b/c |
1245 | * a/d | |
1246 | * a,b,c, and d are all directories. | |
1247 | * | |
1248 | * from cwd of 'a' on both nodes: | |
1249 | * node1: mv b/c d | |
1250 | * node2: mv d b/c | |
1251 | * | |
1252 | * And that's why, just like the VFS, we need a file system | |
1253 | * rename lock. */ | |
5dabd695 | 1254 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1255 | status = ocfs2_rename_lock(osb); |
1256 | if (status < 0) { | |
1257 | mlog_errno(status); | |
1258 | goto bail; | |
1259 | } | |
1260 | rename_lock = 1; | |
f7a14f32 YJ |
1261 | |
1262 | /* here we cannot guarantee the inodes haven't just been | |
1263 | * changed, so check if they are nested again */ | |
1264 | status = ocfs2_check_if_ancestor(osb, new_dir->i_ino, | |
1265 | old_inode->i_ino); | |
1266 | if (status < 0) { | |
1267 | mlog_errno(status); | |
1268 | goto bail; | |
1269 | } else if (status == 1) { | |
1270 | status = -EPERM; | |
1271 | trace_ocfs2_rename_not_permitted( | |
1272 | (unsigned long long)old_inode->i_ino, | |
1273 | (unsigned long long)new_dir->i_ino); | |
1274 | goto bail; | |
1275 | } | |
ccd979bd MF |
1276 | } |
1277 | ||
ccd979bd | 1278 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 | 1279 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
53dc20b9 | 1280 | &new_dir_bh, new_dir, 1); |
ccd979bd MF |
1281 | if (status < 0) { |
1282 | mlog_errno(status); | |
1283 | goto bail; | |
1284 | } | |
8d5596c6 | 1285 | parents_locked = 1; |
ccd979bd MF |
1286 | |
1287 | /* make sure both dirs have bhs | |
1288 | * get an extra ref on old_dir_bh if old==new */ | |
1289 | if (!new_dir_bh) { | |
1290 | if (old_dir_bh) { | |
1291 | new_dir_bh = old_dir_bh; | |
1292 | get_bh(new_dir_bh); | |
1293 | } else { | |
1294 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1295 | status = -EIO; | |
1296 | goto bail; | |
1297 | } | |
1298 | } | |
1299 | ||
379dfe9d | 1300 | /* |
592282cf | 1301 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1302 | * also ensures that the downconvert thread on other nodes |
1303 | * won't have to concurrently downconvert the inode and the | |
1304 | * dentry locks. | |
379dfe9d | 1305 | */ |
cb25797d JK |
1306 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
1307 | OI_LS_PARENT); | |
379dfe9d MF |
1308 | if (status < 0) { |
1309 | if (status != -ENOENT) | |
ccd979bd | 1310 | mlog_errno(status); |
379dfe9d MF |
1311 | goto bail; |
1312 | } | |
8d5596c6 | 1313 | old_child_locked = 1; |
ccd979bd | 1314 | |
379dfe9d MF |
1315 | status = ocfs2_remote_dentry_delete(old_dentry); |
1316 | if (status < 0) { | |
1317 | mlog_errno(status); | |
1318 | goto bail; | |
1319 | } | |
1320 | ||
1321 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1322 | u64 old_inode_parent; |
1323 | ||
4a12ca3a | 1324 | update_dot_dot = 1; |
38760e24 | 1325 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1326 | old_inode, |
1327 | &old_inode_dot_dot_res); | |
38760e24 MF |
1328 | if (status) { |
1329 | status = -EIO; | |
ccd979bd | 1330 | goto bail; |
38760e24 | 1331 | } |
ccd979bd | 1332 | |
38760e24 MF |
1333 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1334 | status = -EIO; | |
ccd979bd | 1335 | goto bail; |
38760e24 MF |
1336 | } |
1337 | ||
1338 | if (!new_inode && new_dir != old_dir && | |
198a1ca3 | 1339 | new_dir->i_nlink >= ocfs2_link_max(osb)) { |
38760e24 | 1340 | status = -EMLINK; |
ccd979bd | 1341 | goto bail; |
38760e24 | 1342 | } |
ccd979bd MF |
1343 | } |
1344 | ||
5b6a3a2b MF |
1345 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1346 | old_dentry->d_name.len, | |
1347 | &old_de_ino); | |
1348 | if (status) { | |
1349 | status = -ENOENT; | |
ccd979bd | 1350 | goto bail; |
5b6a3a2b | 1351 | } |
ccd979bd MF |
1352 | |
1353 | /* | |
1354 | * Check for inode number is _not_ due to possible IO errors. | |
1355 | * We might rmdir the source, keep it as pwd of some process | |
1356 | * and merrily kill the link to whatever was created under the | |
1357 | * same name. Goodbye sticky bit ;-< | |
1358 | */ | |
5b6a3a2b MF |
1359 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1360 | status = -ENOENT; | |
ccd979bd | 1361 | goto bail; |
5b6a3a2b | 1362 | } |
ccd979bd MF |
1363 | |
1364 | /* check if the target already exists (in which case we need | |
1365 | * to delete it */ | |
1366 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1367 | new_dentry->d_name.len, | |
4a12ca3a MF |
1368 | &newfe_blkno, new_dir, |
1369 | &target_lookup_res); | |
ccd979bd MF |
1370 | /* The only error we allow here is -ENOENT because the new |
1371 | * file not existing is perfectly valid. */ | |
1372 | if ((status < 0) && (status != -ENOENT)) { | |
1373 | /* If we cannot find the file specified we should just */ | |
1374 | /* return the error... */ | |
1375 | mlog_errno(status); | |
1376 | goto bail; | |
1377 | } | |
4a12ca3a MF |
1378 | if (status == 0) |
1379 | target_exists = 1; | |
ccd979bd | 1380 | |
4a12ca3a | 1381 | if (!target_exists && new_inode) { |
e325a88f SE |
1382 | /* |
1383 | * Target was unlinked by another node while we were | |
1384 | * waiting to get to ocfs2_rename(). There isn't | |
1385 | * anything we can do here to help the situation, so | |
1386 | * bubble up the appropriate error. | |
1387 | */ | |
1388 | status = -ENOENT; | |
1389 | goto bail; | |
1390 | } | |
ccd979bd MF |
1391 | |
1392 | /* In case we need to overwrite an existing file, we blow it | |
1393 | * away first */ | |
4a12ca3a | 1394 | if (target_exists) { |
ccd979bd MF |
1395 | /* VFS didn't think there existed an inode here, but |
1396 | * someone else in the cluster must have raced our | |
1397 | * rename to create one. Today we error cleanly, in | |
1398 | * the future we should consider calling iget to build | |
1399 | * a new struct inode for this entry. */ | |
1400 | if (!new_inode) { | |
1401 | status = -EACCES; | |
1402 | ||
8990e44a TM |
1403 | trace_ocfs2_rename_target_exists(new_dentry->d_name.len, |
1404 | new_dentry->d_name.name); | |
ccd979bd MF |
1405 | goto bail; |
1406 | } | |
1407 | ||
1408 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1409 | status = -EACCES; | |
1410 | ||
8990e44a | 1411 | trace_ocfs2_rename_disagree( |
b0697053 MF |
1412 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, |
1413 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1414 | OCFS2_I(new_inode)->ip_flags); |
1415 | goto bail; | |
1416 | } | |
1417 | ||
e63aecb6 | 1418 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1419 | if (status < 0) { |
1420 | if (status != -ENOENT) | |
1421 | mlog_errno(status); | |
1422 | goto bail; | |
1423 | } | |
8d5596c6 | 1424 | new_child_locked = 1; |
ccd979bd | 1425 | |
379dfe9d | 1426 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1427 | if (status < 0) { |
1428 | mlog_errno(status); | |
1429 | goto bail; | |
1430 | } | |
1431 | ||
1432 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1433 | ||
8990e44a | 1434 | trace_ocfs2_rename_over_existing( |
b0697053 | 1435 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1436 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1437 | ||
1438 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1439 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
19bd341f | 1440 | OCFS2_I(new_inode)->ip_blkno, |
06ee5c75 JQ |
1441 | orphan_name, &orphan_insert, |
1442 | false); | |
ccd979bd MF |
1443 | if (status < 0) { |
1444 | mlog_errno(status); | |
1445 | goto bail; | |
1446 | } | |
5fb1beb0 | 1447 | should_add_orphan = true; |
ccd979bd MF |
1448 | } |
1449 | } else { | |
2b0143b5 | 1450 | BUG_ON(d_inode(new_dentry->d_parent) != new_dir); |
ccd979bd MF |
1451 | |
1452 | status = ocfs2_check_dir_for_entry(new_dir, | |
1453 | new_dentry->d_name.name, | |
1454 | new_dentry->d_name.len); | |
1455 | if (status) | |
1456 | goto bail; | |
1457 | ||
1458 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1459 | new_dentry->d_name.name, | |
1460 | new_dentry->d_name.len, | |
4a12ca3a | 1461 | &target_insert); |
ccd979bd MF |
1462 | if (status < 0) { |
1463 | mlog_errno(status); | |
1464 | goto bail; | |
1465 | } | |
1466 | } | |
1467 | ||
a90714c1 | 1468 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1469 | if (IS_ERR(handle)) { |
1470 | status = PTR_ERR(handle); | |
1471 | handle = NULL; | |
1472 | mlog_errno(status); | |
1473 | goto bail; | |
1474 | } | |
1475 | ||
4a12ca3a | 1476 | if (target_exists) { |
ccd979bd | 1477 | if (S_ISDIR(new_inode->i_mode)) { |
b80b549c MF |
1478 | if (new_inode->i_nlink != 2 || |
1479 | !ocfs2_empty_dir(new_inode)) { | |
ccd979bd MF |
1480 | status = -ENOTEMPTY; |
1481 | goto bail; | |
1482 | } | |
1483 | } | |
0cf2f763 JB |
1484 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
1485 | newfe_bh, | |
13723d00 | 1486 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1487 | if (status < 0) { |
1488 | mlog_errno(status); | |
1489 | goto bail; | |
1490 | } | |
1491 | ||
ccd979bd | 1492 | /* change the dirent to point to the correct inode */ |
4a12ca3a MF |
1493 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1494 | old_inode); | |
ccd979bd MF |
1495 | if (status < 0) { |
1496 | mlog_errno(status); | |
1497 | goto bail; | |
1498 | } | |
ccd979bd | 1499 | new_dir->i_version++; |
ccd979bd MF |
1500 | |
1501 | if (S_ISDIR(new_inode->i_mode)) | |
198a1ca3 | 1502 | ocfs2_set_links_count(newfe, 0); |
ccd979bd | 1503 | else |
198a1ca3 | 1504 | ocfs2_add_links_count(newfe, -1); |
ec20cec7 | 1505 | ocfs2_journal_dirty(handle, newfe_bh); |
5fb1beb0 | 1506 | if (should_add_orphan) { |
1507 | status = ocfs2_orphan_add(osb, handle, new_inode, | |
1508 | newfe_bh, orphan_name, | |
06ee5c75 | 1509 | &orphan_insert, orphan_dir, false); |
5fb1beb0 | 1510 | if (status < 0) { |
1511 | mlog_errno(status); | |
1512 | goto bail; | |
1513 | } | |
1514 | } | |
ccd979bd MF |
1515 | } else { |
1516 | /* if the name was not found in new_dir, add it now */ | |
1517 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1518 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1519 | new_dir_bh, &target_insert); |
ccd979bd MF |
1520 | } |
1521 | ||
1522 | old_inode->i_ctime = CURRENT_TIME; | |
1523 | mark_inode_dirty(old_inode); | |
480214d7 | 1524 | |
0cf2f763 JB |
1525 | status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), |
1526 | old_inode_bh, | |
13723d00 | 1527 | OCFS2_JOURNAL_ACCESS_WRITE); |
480214d7 SM |
1528 | if (status >= 0) { |
1529 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1530 | ||
1531 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); | |
1532 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); | |
ec20cec7 | 1533 | ocfs2_journal_dirty(handle, old_inode_bh); |
480214d7 SM |
1534 | } else |
1535 | mlog_errno(status); | |
ccd979bd | 1536 | |
5b6a3a2b MF |
1537 | /* |
1538 | * Now that the name has been added to new_dir, remove the old name. | |
1539 | * | |
1540 | * We don't keep any directory entry context around until now | |
1541 | * because the insert might have changed the type of directory | |
1542 | * we're dealing with. | |
1543 | */ | |
4a12ca3a MF |
1544 | status = ocfs2_find_entry(old_dentry->d_name.name, |
1545 | old_dentry->d_name.len, old_dir, | |
1546 | &old_entry_lookup); | |
1547 | if (status) | |
5b6a3a2b | 1548 | goto bail; |
5b6a3a2b | 1549 | |
4a12ca3a | 1550 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
ccd979bd MF |
1551 | if (status < 0) { |
1552 | mlog_errno(status); | |
1553 | goto bail; | |
1554 | } | |
1555 | ||
1556 | if (new_inode) { | |
6d6b77f1 | 1557 | drop_nlink(new_inode); |
ccd979bd MF |
1558 | new_inode->i_ctime = CURRENT_TIME; |
1559 | } | |
1560 | old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME; | |
4a12ca3a MF |
1561 | |
1562 | if (update_dot_dot) { | |
1563 | status = ocfs2_update_entry(old_inode, handle, | |
1564 | &old_inode_dot_dot_res, new_dir); | |
6d6b77f1 | 1565 | drop_nlink(old_dir); |
ccd979bd | 1566 | if (new_inode) { |
6d6b77f1 | 1567 | drop_nlink(new_inode); |
ccd979bd | 1568 | } else { |
d8c76e6f | 1569 | inc_nlink(new_dir); |
ccd979bd MF |
1570 | mark_inode_dirty(new_dir); |
1571 | } | |
1572 | } | |
1573 | mark_inode_dirty(old_dir); | |
592282cf MF |
1574 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1575 | if (new_inode) { | |
ccd979bd | 1576 | mark_inode_dirty(new_inode); |
592282cf MF |
1577 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1578 | } | |
ccd979bd | 1579 | |
592282cf MF |
1580 | if (old_dir != new_dir) { |
1581 | /* Keep the same times on both directories.*/ | |
1582 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; | |
1583 | ||
1584 | /* | |
1585 | * This will also pick up the i_nlink change from the | |
1586 | * block above. | |
1587 | */ | |
1588 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1589 | } | |
ccd979bd MF |
1590 | |
1591 | if (old_dir_nlink != old_dir->i_nlink) { | |
1592 | if (!old_dir_bh) { | |
1593 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1594 | "%llu from %d to %d but bh is NULL!\n", |
1595 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1596 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1597 | } else { |
1598 | struct ocfs2_dinode *fe; | |
0cf2f763 JB |
1599 | status = ocfs2_journal_access_di(handle, |
1600 | INODE_CACHE(old_dir), | |
1601 | old_dir_bh, | |
1602 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd | 1603 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
198a1ca3 | 1604 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
ec20cec7 | 1605 | ocfs2_journal_dirty(handle, old_dir_bh); |
ccd979bd MF |
1606 | } |
1607 | } | |
379dfe9d | 1608 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1609 | status = 0; |
1610 | bail: | |
1611 | if (rename_lock) | |
1612 | ocfs2_rename_unlock(osb); | |
1613 | ||
1614 | if (handle) | |
02dc1af4 | 1615 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1616 | |
8d5596c6 MF |
1617 | if (parents_locked) |
1618 | ocfs2_double_unlock(old_dir, new_dir); | |
1619 | ||
1620 | if (old_child_locked) | |
e63aecb6 | 1621 | ocfs2_inode_unlock(old_inode, 1); |
8d5596c6 MF |
1622 | |
1623 | if (new_child_locked) | |
e63aecb6 | 1624 | ocfs2_inode_unlock(new_inode, 1); |
8d5596c6 | 1625 | |
5098c27b MF |
1626 | if (orphan_dir) { |
1627 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1628 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
1629 | mutex_unlock(&orphan_dir->i_mutex); |
1630 | iput(orphan_dir); | |
1631 | } | |
1632 | ||
ccd979bd MF |
1633 | if (new_inode) |
1634 | sync_mapping_buffers(old_inode->i_mapping); | |
1635 | ||
1636 | if (new_inode) | |
1637 | iput(new_inode); | |
4a12ca3a MF |
1638 | |
1639 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1640 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1641 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1642 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1643 | ocfs2_free_dir_lookup_result(&target_insert); | |
1644 | ||
a81cb88b MF |
1645 | brelse(newfe_bh); |
1646 | brelse(old_inode_bh); | |
1647 | brelse(old_dir_bh); | |
1648 | brelse(new_dir_bh); | |
ccd979bd | 1649 | |
c1e8d35e TM |
1650 | if (status) |
1651 | mlog_errno(status); | |
ccd979bd MF |
1652 | |
1653 | return status; | |
1654 | } | |
1655 | ||
1656 | /* | |
1657 | * we expect i_size = strlen(symname). Copy symname into the file | |
1658 | * data, including the null terminator. | |
1659 | */ | |
1660 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1661 | handle_t *handle, |
ccd979bd MF |
1662 | struct inode *inode, |
1663 | const char *symname) | |
1664 | { | |
1665 | struct buffer_head **bhs = NULL; | |
1666 | const char *c; | |
1667 | struct super_block *sb = osb->sb; | |
4f902c37 | 1668 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1669 | int virtual, blocks, status, i, bytes_left; |
1670 | ||
1671 | bytes_left = i_size_read(inode) + 1; | |
1672 | /* we can't trust i_blocks because we're actually going to | |
1673 | * write i_size + 1 bytes. */ | |
1674 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1675 | ||
8990e44a TM |
1676 | trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks, |
1677 | i_size_read(inode), blocks); | |
ccd979bd MF |
1678 | |
1679 | /* Sanity check -- make sure we're going to fit. */ | |
1680 | if (bytes_left > | |
1681 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1682 | status = -EIO; | |
1683 | mlog_errno(status); | |
1684 | goto bail; | |
1685 | } | |
1686 | ||
1687 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1688 | if (!bhs) { | |
1689 | status = -ENOMEM; | |
1690 | mlog_errno(status); | |
1691 | goto bail; | |
1692 | } | |
1693 | ||
49cb8d2d MF |
1694 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1695 | NULL); | |
ccd979bd MF |
1696 | if (status < 0) { |
1697 | mlog_errno(status); | |
1698 | goto bail; | |
1699 | } | |
1700 | ||
1701 | /* links can never be larger than one cluster so we know this | |
1702 | * is all going to be contiguous, but do a sanity check | |
1703 | * anyway. */ | |
1704 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1705 | status = -EIO; | |
1706 | mlog_errno(status); | |
1707 | goto bail; | |
1708 | } | |
1709 | ||
1710 | virtual = 0; | |
1711 | while(bytes_left > 0) { | |
1712 | c = &symname[virtual * sb->s_blocksize]; | |
1713 | ||
1714 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1715 | if (!bhs[virtual]) { | |
1716 | status = -ENOMEM; | |
1717 | mlog_errno(status); | |
1718 | goto bail; | |
1719 | } | |
8cb471e8 JB |
1720 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
1721 | bhs[virtual]); | |
ccd979bd | 1722 | |
0cf2f763 JB |
1723 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
1724 | bhs[virtual], | |
ccd979bd MF |
1725 | OCFS2_JOURNAL_ACCESS_CREATE); |
1726 | if (status < 0) { | |
1727 | mlog_errno(status); | |
1728 | goto bail; | |
1729 | } | |
1730 | ||
1731 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1732 | ||
1733 | memcpy(bhs[virtual]->b_data, c, | |
1734 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1735 | bytes_left); | |
1736 | ||
ec20cec7 | 1737 | ocfs2_journal_dirty(handle, bhs[virtual]); |
ccd979bd MF |
1738 | |
1739 | virtual++; | |
1740 | p_blkno++; | |
1741 | bytes_left -= sb->s_blocksize; | |
1742 | } | |
1743 | ||
1744 | status = 0; | |
1745 | bail: | |
1746 | ||
1747 | if (bhs) { | |
1748 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1749 | brelse(bhs[i]); |
ccd979bd MF |
1750 | kfree(bhs); |
1751 | } | |
1752 | ||
c1e8d35e TM |
1753 | if (status) |
1754 | mlog_errno(status); | |
ccd979bd MF |
1755 | return status; |
1756 | } | |
1757 | ||
1758 | static int ocfs2_symlink(struct inode *dir, | |
1759 | struct dentry *dentry, | |
1760 | const char *symname) | |
1761 | { | |
1762 | int status, l, credits; | |
1763 | u64 newsize; | |
1764 | struct ocfs2_super *osb = NULL; | |
1765 | struct inode *inode = NULL; | |
1766 | struct super_block *sb; | |
1767 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1768 | struct buffer_head *parent_fe_bh = NULL; |
1769 | struct ocfs2_dinode *fe = NULL; | |
1770 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1771 | handle_t *handle = NULL; |
ccd979bd MF |
1772 | struct ocfs2_alloc_context *inode_ac = NULL; |
1773 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1774 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1775 | int want_clusters = 0; | |
1776 | int xattr_credits = 0; | |
1777 | struct ocfs2_security_xattr_info si = { | |
1778 | .enable = 1, | |
1779 | }; | |
a90714c1 | 1780 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1781 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
1782 | sigset_t oldset; |
1783 | int did_block_signals = 0; | |
595297a8 | 1784 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 1785 | |
8990e44a TM |
1786 | trace_ocfs2_symlink_begin(dir, dentry, symname, |
1787 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 1788 | |
871a2931 | 1789 | dquot_initialize(dir); |
907f4554 | 1790 | |
ccd979bd MF |
1791 | sb = dir->i_sb; |
1792 | osb = OCFS2_SB(sb); | |
1793 | ||
1794 | l = strlen(symname) + 1; | |
1795 | ||
1796 | credits = ocfs2_calc_symlink_credits(sb); | |
1797 | ||
ccd979bd | 1798 | /* lock the parent directory */ |
e63aecb6 | 1799 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1800 | if (status < 0) { |
1801 | if (status != -ENOENT) | |
1802 | mlog_errno(status); | |
6d8fc40e | 1803 | return status; |
ccd979bd MF |
1804 | } |
1805 | ||
1806 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
198a1ca3 | 1807 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
1808 | /* can't make a file in a deleted directory. */ |
1809 | status = -ENOENT; | |
1810 | goto bail; | |
1811 | } | |
1812 | ||
1813 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1814 | dentry->d_name.len); | |
1815 | if (status) | |
1816 | goto bail; | |
1817 | ||
1818 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1819 | dentry->d_name.name, | |
4a12ca3a | 1820 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1821 | if (status < 0) { |
1822 | mlog_errno(status); | |
1823 | goto bail; | |
1824 | } | |
1825 | ||
da5cbf2f | 1826 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1827 | if (status < 0) { |
1828 | if (status != -ENOSPC) | |
1829 | mlog_errno(status); | |
1830 | goto bail; | |
1831 | } | |
1832 | ||
f5d36202 TY |
1833 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
1834 | if (!inode) { | |
1835 | status = -ENOMEM; | |
1836 | mlog_errno(status); | |
1837 | goto bail; | |
1838 | } | |
1839 | ||
534eaddd | 1840 | /* get security xattr */ |
2a7dba39 | 1841 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
1842 | if (status) { |
1843 | if (status == -EOPNOTSUPP) | |
1844 | si.enable = 0; | |
1845 | else { | |
1846 | mlog_errno(status); | |
1847 | goto bail; | |
1848 | } | |
1849 | } | |
1850 | ||
1851 | /* calculate meta data/clusters for setting security xattr */ | |
1852 | if (si.enable) { | |
1853 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1854 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1855 | if (status < 0) { |
534eaddd | 1856 | mlog_errno(status); |
ccd979bd MF |
1857 | goto bail; |
1858 | } | |
1859 | } | |
1860 | ||
534eaddd TY |
1861 | /* don't reserve bitmap space for fast symlinks. */ |
1862 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1863 | want_clusters += 1; | |
1864 | ||
1865 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1866 | if (status < 0) { | |
1867 | if (status != -ENOSPC) | |
1868 | mlog_errno(status); | |
1869 | goto bail; | |
1870 | } | |
1871 | ||
1872 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1873 | if (IS_ERR(handle)) { |
1874 | status = PTR_ERR(handle); | |
1875 | handle = NULL; | |
1876 | mlog_errno(status); | |
1877 | goto bail; | |
1878 | } | |
1879 | ||
547ba7c8 JB |
1880 | /* Starting to change things, restart is no longer possible. */ |
1881 | ocfs2_block_signals(&oldset); | |
1882 | did_block_signals = 1; | |
1883 | ||
63936dda CH |
1884 | status = dquot_alloc_inode(inode); |
1885 | if (status) | |
a90714c1 | 1886 | goto bail; |
a90714c1 JK |
1887 | did_quota_inode = 1; |
1888 | ||
8990e44a TM |
1889 | trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len, |
1890 | dentry->d_name.name, | |
1891 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
1892 | inode->i_mode); | |
19bd341f TM |
1893 | |
1894 | status = ocfs2_mknod_locked(osb, dir, inode, | |
f5d36202 TY |
1895 | 0, &new_fe_bh, parent_fe_bh, handle, |
1896 | inode_ac); | |
ccd979bd MF |
1897 | if (status < 0) { |
1898 | mlog_errno(status); | |
1899 | goto bail; | |
1900 | } | |
1901 | ||
1902 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1903 | inode->i_rdev = 0; | |
1904 | newsize = l - 1; | |
ea022dfb | 1905 | inode->i_op = &ocfs2_symlink_inode_operations; |
ccd979bd | 1906 | if (l > ocfs2_fast_symlink_chars(sb)) { |
dcd0538f MF |
1907 | u32 offset = 0; |
1908 | ||
5dd4056d CH |
1909 | status = dquot_alloc_space_nodirty(inode, |
1910 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1911 | if (status) | |
a90714c1 | 1912 | goto bail; |
a90714c1 | 1913 | did_quota = 1; |
ea022dfb | 1914 | inode->i_mapping->a_ops = &ocfs2_aops; |
0eb8d47e TM |
1915 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1916 | new_fe_bh, | |
1917 | handle, data_ac, NULL, | |
1918 | NULL); | |
ccd979bd MF |
1919 | if (status < 0) { |
1920 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1921 | mlog(ML_ERROR, |
1922 | "Failed to extend file to %llu\n", | |
1923 | (unsigned long long)newsize); | |
ccd979bd MF |
1924 | mlog_errno(status); |
1925 | status = -ENOSPC; | |
1926 | } | |
1927 | goto bail; | |
1928 | } | |
1929 | i_size_write(inode, newsize); | |
8110b073 | 1930 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd | 1931 | } else { |
ea022dfb | 1932 | inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops; |
ccd979bd MF |
1933 | memcpy((char *) fe->id2.i_symlink, symname, l); |
1934 | i_size_write(inode, newsize); | |
1935 | inode->i_blocks = 0; | |
1936 | } | |
1937 | ||
1938 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1939 | if (status < 0) { | |
1940 | mlog_errno(status); | |
1941 | goto bail; | |
1942 | } | |
1943 | ||
1944 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
1945 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
1946 | symname); | |
1947 | if (status < 0) { | |
1948 | mlog_errno(status); | |
1949 | goto bail; | |
1950 | } | |
1951 | } | |
1952 | ||
534eaddd TY |
1953 | if (si.enable) { |
1954 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
1955 | xattr_ac, data_ac); | |
1956 | if (status < 0) { | |
1957 | mlog_errno(status); | |
1958 | goto bail; | |
1959 | } | |
1960 | } | |
1961 | ||
a9743fcd MF |
1962 | /* |
1963 | * Do this before adding the entry to the directory. We add | |
1964 | * also set d_op after success so that ->d_iput() will cleanup | |
1965 | * the dentry lock even if ocfs2_add_entry() fails below. | |
1966 | */ | |
1967 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); | |
1968 | if (status) { | |
ccd979bd MF |
1969 | mlog_errno(status); |
1970 | goto bail; | |
1971 | } | |
1972 | ||
595297a8 | 1973 | dl = dentry->d_fsdata; |
1974 | ||
a9743fcd MF |
1975 | status = ocfs2_add_entry(handle, dentry, inode, |
1976 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
1977 | &lookup); | |
1978 | if (status < 0) { | |
379dfe9d MF |
1979 | mlog_errno(status); |
1980 | goto bail; | |
1981 | } | |
1982 | ||
ccd979bd | 1983 | insert_inode_hash(inode); |
ccd979bd MF |
1984 | d_instantiate(dentry, inode); |
1985 | bail: | |
a90714c1 | 1986 | if (status < 0 && did_quota) |
5dd4056d | 1987 | dquot_free_space_nodirty(inode, |
a90714c1 JK |
1988 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
1989 | if (status < 0 && did_quota_inode) | |
63936dda | 1990 | dquot_free_inode(inode); |
ccd979bd | 1991 | if (handle) |
02dc1af4 | 1992 | ocfs2_commit_trans(osb, handle); |
6d8fc40e | 1993 | |
e63aecb6 | 1994 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
1995 | if (did_block_signals) |
1996 | ocfs2_unblock_signals(&oldset); | |
6d8fc40e | 1997 | |
a81cb88b MF |
1998 | brelse(new_fe_bh); |
1999 | brelse(parent_fe_bh); | |
534eaddd | 2000 | kfree(si.value); |
4a12ca3a | 2001 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
2002 | if (inode_ac) |
2003 | ocfs2_free_alloc_context(inode_ac); | |
2004 | if (data_ac) | |
2005 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
2006 | if (xattr_ac) |
2007 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 | 2008 | if ((status < 0) && inode) { |
595297a8 | 2009 | if (dl) |
2010 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
2011 | ||
ab41fdc8 | 2012 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
f5d36202 | 2013 | clear_nlink(inode); |
ccd979bd | 2014 | iput(inode); |
f5d36202 | 2015 | } |
ccd979bd | 2016 | |
c1e8d35e TM |
2017 | if (status) |
2018 | mlog_errno(status); | |
ccd979bd MF |
2019 | |
2020 | return status; | |
2021 | } | |
2022 | ||
ccd979bd MF |
2023 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
2024 | { | |
2025 | int status, namelen; | |
2026 | ||
b0697053 MF |
2027 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
2028 | (long long)blkno); | |
ccd979bd MF |
2029 | if (namelen <= 0) { |
2030 | if (namelen) | |
2031 | status = namelen; | |
2032 | else | |
2033 | status = -EINVAL; | |
2034 | mlog_errno(status); | |
2035 | goto bail; | |
2036 | } | |
2037 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
2038 | status = -EINVAL; | |
2039 | mlog_errno(status); | |
2040 | goto bail; | |
2041 | } | |
2042 | ||
8990e44a | 2043 | trace_ocfs2_blkno_stringify(blkno, name, namelen); |
ccd979bd MF |
2044 | |
2045 | status = 0; | |
2046 | bail: | |
c1e8d35e TM |
2047 | if (status < 0) |
2048 | mlog_errno(status); | |
ccd979bd MF |
2049 | return status; |
2050 | } | |
2051 | ||
dd43bcde MF |
2052 | static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb, |
2053 | struct inode **ret_orphan_dir, | |
2054 | struct buffer_head **ret_orphan_dir_bh) | |
ccd979bd | 2055 | { |
5098c27b | 2056 | struct inode *orphan_dir_inode; |
ccd979bd | 2057 | struct buffer_head *orphan_dir_bh = NULL; |
dd43bcde | 2058 | int ret = 0; |
ccd979bd MF |
2059 | |
2060 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2061 | ORPHAN_DIR_SYSTEM_INODE, | |
2062 | osb->slot_num); | |
2063 | if (!orphan_dir_inode) { | |
dd43bcde MF |
2064 | ret = -ENOENT; |
2065 | mlog_errno(ret); | |
2066 | return ret; | |
ccd979bd MF |
2067 | } |
2068 | ||
5098c27b MF |
2069 | mutex_lock(&orphan_dir_inode->i_mutex); |
2070 | ||
dd43bcde MF |
2071 | ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2072 | if (ret < 0) { | |
2073 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2074 | iput(orphan_dir_inode); | |
2075 | ||
2076 | mlog_errno(ret); | |
2077 | return ret; | |
ccd979bd MF |
2078 | } |
2079 | ||
dd43bcde MF |
2080 | *ret_orphan_dir = orphan_dir_inode; |
2081 | *ret_orphan_dir_bh = orphan_dir_bh; | |
5098c27b | 2082 | |
dd43bcde MF |
2083 | return 0; |
2084 | } | |
2085 | ||
2086 | static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode, | |
2087 | struct buffer_head *orphan_dir_bh, | |
2088 | u64 blkno, | |
2089 | char *name, | |
06ee5c75 JQ |
2090 | struct ocfs2_dir_lookup_result *lookup, |
2091 | bool dio) | |
dd43bcde MF |
2092 | { |
2093 | int ret; | |
2094 | struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb); | |
06ee5c75 JQ |
2095 | int namelen = dio ? |
2096 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2097 | OCFS2_ORPHAN_NAMELEN; | |
2098 | ||
2099 | if (dio) { | |
2100 | ret = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2101 | OCFS2_DIO_ORPHAN_PREFIX); | |
2102 | if (ret != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2103 | ret = -EINVAL; | |
2104 | mlog_errno(ret); | |
2105 | return ret; | |
2106 | } | |
dd43bcde | 2107 | |
06ee5c75 JQ |
2108 | ret = ocfs2_blkno_stringify(blkno, |
2109 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2110 | } else | |
2111 | ret = ocfs2_blkno_stringify(blkno, name); | |
dd43bcde MF |
2112 | if (ret < 0) { |
2113 | mlog_errno(ret); | |
2114 | return ret; | |
2115 | } | |
2116 | ||
2117 | ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
2118 | orphan_dir_bh, name, | |
06ee5c75 | 2119 | namelen, lookup); |
dd43bcde MF |
2120 | if (ret < 0) { |
2121 | mlog_errno(ret); | |
2122 | return ret; | |
2123 | } | |
2124 | ||
2125 | return 0; | |
2126 | } | |
2127 | ||
2128 | /** | |
2129 | * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for | |
2130 | * insertion of an orphan. | |
2131 | * @osb: ocfs2 file system | |
2132 | * @ret_orphan_dir: Orphan dir inode - returned locked! | |
2133 | * @blkno: Actual block number of the inode to be inserted into orphan dir. | |
2134 | * @lookup: dir lookup result, to be passed back into functions like | |
2135 | * ocfs2_orphan_add | |
2136 | * | |
2137 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2138 | * fields will be populated. | |
2139 | * | |
2140 | * Returns non-zero on failure. | |
2141 | */ | |
2142 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
2143 | struct inode **ret_orphan_dir, | |
2144 | u64 blkno, | |
2145 | char *name, | |
06ee5c75 JQ |
2146 | struct ocfs2_dir_lookup_result *lookup, |
2147 | bool dio) | |
dd43bcde MF |
2148 | { |
2149 | struct inode *orphan_dir_inode = NULL; | |
2150 | struct buffer_head *orphan_dir_bh = NULL; | |
2151 | int ret = 0; | |
2152 | ||
2153 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode, | |
2154 | &orphan_dir_bh); | |
2155 | if (ret < 0) { | |
2156 | mlog_errno(ret); | |
2157 | return ret; | |
2158 | } | |
2159 | ||
2160 | ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh, | |
06ee5c75 | 2161 | blkno, name, lookup, dio); |
dd43bcde MF |
2162 | if (ret < 0) { |
2163 | mlog_errno(ret); | |
2164 | goto out; | |
ccd979bd MF |
2165 | } |
2166 | ||
5098c27b MF |
2167 | *ret_orphan_dir = orphan_dir_inode; |
2168 | ||
dd43bcde MF |
2169 | out: |
2170 | brelse(orphan_dir_bh); | |
2171 | ||
2172 | if (ret) { | |
2173 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5098c27b | 2174 | mutex_unlock(&orphan_dir_inode->i_mutex); |
ccd979bd | 2175 | iput(orphan_dir_inode); |
5098c27b | 2176 | } |
ccd979bd | 2177 | |
c1e8d35e TM |
2178 | if (ret) |
2179 | mlog_errno(ret); | |
dd43bcde | 2180 | return ret; |
ccd979bd MF |
2181 | } |
2182 | ||
2183 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 2184 | handle_t *handle, |
ccd979bd | 2185 | struct inode *inode, |
3939fda4 | 2186 | struct buffer_head *fe_bh, |
ccd979bd | 2187 | char *name, |
4a12ca3a | 2188 | struct ocfs2_dir_lookup_result *lookup, |
06ee5c75 JQ |
2189 | struct inode *orphan_dir_inode, |
2190 | bool dio) | |
ccd979bd | 2191 | { |
ccd979bd MF |
2192 | struct buffer_head *orphan_dir_bh = NULL; |
2193 | int status = 0; | |
2194 | struct ocfs2_dinode *orphan_fe; | |
3939fda4 | 2195 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; |
06ee5c75 JQ |
2196 | int namelen = dio ? |
2197 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2198 | OCFS2_ORPHAN_NAMELEN; | |
ccd979bd | 2199 | |
8990e44a TM |
2200 | trace_ocfs2_orphan_add_begin( |
2201 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 2202 | |
b657c95c | 2203 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
2204 | if (status < 0) { |
2205 | mlog_errno(status); | |
2206 | goto leave; | |
2207 | } | |
2208 | ||
0cf2f763 JB |
2209 | status = ocfs2_journal_access_di(handle, |
2210 | INODE_CACHE(orphan_dir_inode), | |
2211 | orphan_dir_bh, | |
13723d00 | 2212 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2213 | if (status < 0) { |
2214 | mlog_errno(status); | |
2215 | goto leave; | |
2216 | } | |
2217 | ||
ea45466a YL |
2218 | /* |
2219 | * We're going to journal the change of i_flags and i_orphaned_slot. | |
2220 | * It's safe anyway, though some callers may duplicate the journaling. | |
2221 | * Journaling within the func just make the logic look more | |
2222 | * straightforward. | |
2223 | */ | |
2224 | status = ocfs2_journal_access_di(handle, | |
2225 | INODE_CACHE(inode), | |
2226 | fe_bh, | |
2227 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2228 | if (status < 0) { | |
2229 | mlog_errno(status); | |
2230 | goto leave; | |
2231 | } | |
2232 | ||
ccd979bd MF |
2233 | /* we're a cluster, and nlink can change on disk from |
2234 | * underneath us... */ | |
2235 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2236 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2237 | ocfs2_add_links_count(orphan_fe, 1); |
bfe86848 | 2238 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2239 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2240 | |
2241 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
06ee5c75 | 2242 | namelen, inode, |
ccd979bd | 2243 | OCFS2_I(inode)->ip_blkno, |
4a12ca3a | 2244 | orphan_dir_bh, lookup); |
ccd979bd MF |
2245 | if (status < 0) { |
2246 | mlog_errno(status); | |
ea45466a | 2247 | goto rollback; |
3939fda4 TY |
2248 | } |
2249 | ||
06ee5c75 JQ |
2250 | if (dio) { |
2251 | /* Update flag OCFS2_DIO_ORPHANED_FL and record the orphan | |
2252 | * slot. | |
2253 | */ | |
2254 | fe->i_flags |= cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2255 | fe->i_dio_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2256 | } else { | |
2257 | fe->i_flags |= cpu_to_le32(OCFS2_ORPHANED_FL); | |
2258 | OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR; | |
ccd979bd | 2259 | |
06ee5c75 JQ |
2260 | /* Record which orphan dir our inode now resides |
2261 | * in. delete_inode will use this to determine which orphan | |
2262 | * dir to lock. */ | |
2263 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2264 | } | |
ccd979bd | 2265 | |
3939fda4 TY |
2266 | ocfs2_journal_dirty(handle, fe_bh); |
2267 | ||
8990e44a TM |
2268 | trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno, |
2269 | osb->slot_num); | |
ccd979bd | 2270 | |
ea45466a YL |
2271 | rollback: |
2272 | if (status < 0) { | |
2273 | if (S_ISDIR(inode->i_mode)) | |
2274 | ocfs2_add_links_count(orphan_fe, -1); | |
2275 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); | |
2276 | } | |
2277 | ||
ccd979bd | 2278 | leave: |
a81cb88b | 2279 | brelse(orphan_dir_bh); |
ccd979bd | 2280 | |
ccd979bd MF |
2281 | return status; |
2282 | } | |
2283 | ||
2284 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
2285 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 2286 | handle_t *handle, |
ccd979bd MF |
2287 | struct inode *orphan_dir_inode, |
2288 | struct inode *inode, | |
06ee5c75 JQ |
2289 | struct buffer_head *orphan_dir_bh, |
2290 | bool dio) | |
ccd979bd | 2291 | { |
06ee5c75 JQ |
2292 | const int namelen = OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN; |
2293 | char name[namelen + 1]; | |
ccd979bd MF |
2294 | struct ocfs2_dinode *orphan_fe; |
2295 | int status = 0; | |
4a12ca3a | 2296 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd | 2297 | |
06ee5c75 JQ |
2298 | if (dio) { |
2299 | status = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2300 | OCFS2_DIO_ORPHAN_PREFIX); | |
2301 | if (status != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2302 | status = -EINVAL; | |
2303 | mlog_errno(status); | |
2304 | return status; | |
2305 | } | |
2306 | ||
2307 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, | |
2308 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2309 | } else | |
2310 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
ccd979bd MF |
2311 | if (status < 0) { |
2312 | mlog_errno(status); | |
2313 | goto leave; | |
2314 | } | |
2315 | ||
8990e44a TM |
2316 | trace_ocfs2_orphan_del( |
2317 | (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
e38a5739 | 2318 | name, strlen(name)); |
ccd979bd MF |
2319 | |
2320 | /* find it's spot in the orphan directory */ | |
e38a5739 | 2321 | status = ocfs2_find_entry(name, strlen(name), orphan_dir_inode, |
4a12ca3a MF |
2322 | &lookup); |
2323 | if (status) { | |
ccd979bd MF |
2324 | mlog_errno(status); |
2325 | goto leave; | |
2326 | } | |
2327 | ||
2328 | /* remove it from the orphan directory */ | |
4a12ca3a | 2329 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
2330 | if (status < 0) { |
2331 | mlog_errno(status); | |
2332 | goto leave; | |
2333 | } | |
2334 | ||
0cf2f763 JB |
2335 | status = ocfs2_journal_access_di(handle, |
2336 | INODE_CACHE(orphan_dir_inode), | |
2337 | orphan_dir_bh, | |
13723d00 | 2338 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2339 | if (status < 0) { |
2340 | mlog_errno(status); | |
2341 | goto leave; | |
2342 | } | |
2343 | ||
2344 | /* do the i_nlink dance! :) */ | |
2345 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2346 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2347 | ocfs2_add_links_count(orphan_fe, -1); |
bfe86848 | 2348 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2349 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2350 | |
2351 | leave: | |
4a12ca3a | 2352 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd | 2353 | |
c1e8d35e TM |
2354 | if (status) |
2355 | mlog_errno(status); | |
ccd979bd MF |
2356 | return status; |
2357 | } | |
2358 | ||
97b8f4a9 | 2359 | /** |
25985edc | 2360 | * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to receive a newly |
97b8f4a9 MF |
2361 | * allocated file. This is different from the typical 'add to orphan dir' |
2362 | * operation in that the inode does not yet exist. This is a problem because | |
2363 | * the orphan dir stringifies the inode block number to come up with it's | |
2364 | * dirent. Obviously if the inode does not yet exist we have a chicken and egg | |
2365 | * problem. This function works around it by calling deeper into the orphan | |
2366 | * and suballoc code than other callers. Use this only by necessity. | |
2367 | * @dir: The directory which this inode will ultimately wind up under - not the | |
2368 | * orphan dir! | |
2369 | * @dir_bh: buffer_head the @dir inode block | |
2370 | * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled | |
2371 | * with the string to be used for orphan dirent. Pass back to the orphan dir | |
2372 | * code. | |
2373 | * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan | |
2374 | * dir code. | |
2375 | * @ret_di_blkno: block number where the new inode will be allocated. | |
2376 | * @orphan_insert: Dir insert context to be passed back into orphan dir code. | |
2377 | * @ret_inode_ac: Inode alloc context to be passed back to the allocator. | |
2378 | * | |
2379 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2380 | * fields will be populated. | |
2381 | * | |
2382 | * Returns non-zero on failure. | |
2383 | */ | |
2384 | static int ocfs2_prep_new_orphaned_file(struct inode *dir, | |
2385 | struct buffer_head *dir_bh, | |
2386 | char *orphan_name, | |
2387 | struct inode **ret_orphan_dir, | |
2388 | u64 *ret_di_blkno, | |
2389 | struct ocfs2_dir_lookup_result *orphan_insert, | |
2390 | struct ocfs2_alloc_context **ret_inode_ac) | |
2391 | { | |
2392 | int ret; | |
2393 | u64 di_blkno; | |
2394 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2395 | struct inode *orphan_dir = NULL; | |
2396 | struct buffer_head *orphan_dir_bh = NULL; | |
2397 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2398 | ||
2399 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh); | |
2400 | if (ret < 0) { | |
2401 | mlog_errno(ret); | |
2402 | return ret; | |
2403 | } | |
2404 | ||
2405 | /* reserve an inode spot */ | |
2406 | ret = ocfs2_reserve_new_inode(osb, &inode_ac); | |
2407 | if (ret < 0) { | |
2408 | if (ret != -ENOSPC) | |
2409 | mlog_errno(ret); | |
2410 | goto out; | |
2411 | } | |
2412 | ||
2413 | ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac, | |
2414 | &di_blkno); | |
2415 | if (ret) { | |
2416 | mlog_errno(ret); | |
2417 | goto out; | |
2418 | } | |
2419 | ||
2420 | ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh, | |
06ee5c75 JQ |
2421 | di_blkno, orphan_name, orphan_insert, |
2422 | false); | |
97b8f4a9 MF |
2423 | if (ret < 0) { |
2424 | mlog_errno(ret); | |
2425 | goto out; | |
2426 | } | |
2427 | ||
2428 | out: | |
2429 | if (ret == 0) { | |
2430 | *ret_orphan_dir = orphan_dir; | |
2431 | *ret_di_blkno = di_blkno; | |
2432 | *ret_inode_ac = inode_ac; | |
2433 | /* | |
2434 | * orphan_name and orphan_insert are already up to | |
2435 | * date via prepare_orphan_dir | |
2436 | */ | |
2437 | } else { | |
2438 | /* Unroll reserve_new_inode* */ | |
2439 | if (inode_ac) | |
2440 | ocfs2_free_alloc_context(inode_ac); | |
2441 | ||
2442 | /* Unroll orphan dir locking */ | |
2443 | mutex_unlock(&orphan_dir->i_mutex); | |
2444 | ocfs2_inode_unlock(orphan_dir, 1); | |
2445 | iput(orphan_dir); | |
2446 | } | |
2447 | ||
2448 | brelse(orphan_dir_bh); | |
2449 | ||
7869e590 | 2450 | return ret; |
97b8f4a9 MF |
2451 | } |
2452 | ||
bc13d347 TM |
2453 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
2454 | int mode, | |
2455 | struct inode **new_inode) | |
2456 | { | |
2457 | int status, did_quota_inode = 0; | |
2458 | struct inode *inode = NULL; | |
2459 | struct inode *orphan_dir = NULL; | |
2460 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2461 | struct ocfs2_dinode *di = NULL; | |
2462 | handle_t *handle = NULL; | |
2463 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2464 | struct buffer_head *parent_di_bh = NULL; | |
2465 | struct buffer_head *new_di_bh = NULL; | |
2466 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2467 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
97b8f4a9 MF |
2468 | u64 uninitialized_var(di_blkno), suballoc_loc; |
2469 | u16 suballoc_bit; | |
bc13d347 TM |
2470 | |
2471 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2472 | if (status < 0) { | |
2473 | if (status != -ENOENT) | |
2474 | mlog_errno(status); | |
2475 | return status; | |
2476 | } | |
2477 | ||
97b8f4a9 MF |
2478 | status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh, |
2479 | orphan_name, &orphan_dir, | |
2480 | &di_blkno, &orphan_insert, &inode_ac); | |
bc13d347 TM |
2481 | if (status < 0) { |
2482 | if (status != -ENOSPC) | |
2483 | mlog_errno(status); | |
2484 | goto leave; | |
2485 | } | |
2486 | ||
2487 | inode = ocfs2_get_init_inode(dir, mode); | |
2488 | if (!inode) { | |
2489 | status = -ENOMEM; | |
2490 | mlog_errno(status); | |
2491 | goto leave; | |
2492 | } | |
2493 | ||
2494 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); | |
2495 | if (IS_ERR(handle)) { | |
2496 | status = PTR_ERR(handle); | |
2497 | handle = NULL; | |
2498 | mlog_errno(status); | |
2499 | goto leave; | |
2500 | } | |
2501 | ||
63936dda CH |
2502 | status = dquot_alloc_inode(inode); |
2503 | if (status) | |
bc13d347 | 2504 | goto leave; |
bc13d347 TM |
2505 | did_quota_inode = 1; |
2506 | ||
97b8f4a9 MF |
2507 | status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac, |
2508 | &suballoc_loc, | |
2509 | &suballoc_bit, di_blkno); | |
bc13d347 TM |
2510 | if (status < 0) { |
2511 | mlog_errno(status); | |
2512 | goto leave; | |
2513 | } | |
2514 | ||
6d6b77f1 | 2515 | clear_nlink(inode); |
97b8f4a9 MF |
2516 | /* do the real work now. */ |
2517 | status = __ocfs2_mknod_locked(dir, inode, | |
2518 | 0, &new_di_bh, parent_di_bh, handle, | |
2519 | inode_ac, di_blkno, suballoc_loc, | |
2520 | suballoc_bit); | |
bc13d347 TM |
2521 | if (status < 0) { |
2522 | mlog_errno(status); | |
2523 | goto leave; | |
2524 | } | |
2525 | ||
2526 | di = (struct ocfs2_dinode *)new_di_bh->b_data; | |
3939fda4 | 2527 | status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name, |
06ee5c75 | 2528 | &orphan_insert, orphan_dir, false); |
bc13d347 TM |
2529 | if (status < 0) { |
2530 | mlog_errno(status); | |
2531 | goto leave; | |
2532 | } | |
2533 | ||
2534 | /* get open lock so that only nodes can't remove it from orphan dir. */ | |
2535 | status = ocfs2_open_lock(inode); | |
2536 | if (status < 0) | |
2537 | mlog_errno(status); | |
2538 | ||
c7d260af | 2539 | insert_inode_hash(inode); |
bc13d347 TM |
2540 | leave: |
2541 | if (status < 0 && did_quota_inode) | |
63936dda | 2542 | dquot_free_inode(inode); |
bc13d347 TM |
2543 | if (handle) |
2544 | ocfs2_commit_trans(osb, handle); | |
2545 | ||
2546 | if (orphan_dir) { | |
2547 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
2548 | ocfs2_inode_unlock(orphan_dir, 1); | |
2549 | mutex_unlock(&orphan_dir->i_mutex); | |
2550 | iput(orphan_dir); | |
2551 | } | |
2552 | ||
bc13d347 TM |
2553 | if ((status < 0) && inode) { |
2554 | clear_nlink(inode); | |
2555 | iput(inode); | |
2556 | } | |
2557 | ||
2558 | if (inode_ac) | |
2559 | ocfs2_free_alloc_context(inode_ac); | |
2560 | ||
2561 | brelse(new_di_bh); | |
2562 | ||
2563 | if (!status) | |
2564 | *new_inode = inode; | |
2565 | ||
2566 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2567 | ||
2568 | ocfs2_inode_unlock(dir, 1); | |
2569 | brelse(parent_di_bh); | |
2570 | return status; | |
2571 | } | |
2572 | ||
4813962b JQ |
2573 | static int ocfs2_dio_orphan_recovered(struct inode *inode) |
2574 | { | |
2575 | int ret; | |
2576 | struct buffer_head *di_bh = NULL; | |
2577 | struct ocfs2_dinode *di = NULL; | |
2578 | ||
2579 | ret = ocfs2_inode_lock(inode, &di_bh, 1); | |
2580 | if (ret < 0) { | |
2581 | mlog_errno(ret); | |
2582 | return 0; | |
2583 | } | |
2584 | ||
2585 | di = (struct ocfs2_dinode *) di_bh->b_data; | |
2586 | ret = !(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL)); | |
2587 | ocfs2_inode_unlock(inode, 1); | |
2588 | brelse(di_bh); | |
2589 | ||
2590 | return ret; | |
2591 | } | |
2592 | ||
2593 | #define OCFS2_DIO_ORPHANED_FL_CHECK_INTERVAL 10000 | |
06ee5c75 JQ |
2594 | int ocfs2_add_inode_to_orphan(struct ocfs2_super *osb, |
2595 | struct inode *inode) | |
2596 | { | |
2597 | char orphan_name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1]; | |
2598 | struct inode *orphan_dir_inode = NULL; | |
2599 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
2600 | struct buffer_head *di_bh = NULL; | |
2601 | int status = 0; | |
2602 | handle_t *handle = NULL; | |
4813962b | 2603 | struct ocfs2_dinode *di = NULL; |
06ee5c75 | 2604 | |
4813962b | 2605 | restart: |
06ee5c75 JQ |
2606 | status = ocfs2_inode_lock(inode, &di_bh, 1); |
2607 | if (status < 0) { | |
2608 | mlog_errno(status); | |
2609 | goto bail; | |
2610 | } | |
2611 | ||
4813962b JQ |
2612 | di = (struct ocfs2_dinode *) di_bh->b_data; |
2613 | /* | |
2614 | * Another append dio crashed? | |
2615 | * If so, wait for recovery first. | |
2616 | */ | |
2617 | if (unlikely(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))) { | |
2618 | ocfs2_inode_unlock(inode, 1); | |
2619 | brelse(di_bh); | |
2620 | wait_event_interruptible_timeout(OCFS2_I(inode)->append_dio_wq, | |
2621 | ocfs2_dio_orphan_recovered(inode), | |
2622 | msecs_to_jiffies(OCFS2_DIO_ORPHANED_FL_CHECK_INTERVAL)); | |
2623 | goto restart; | |
2624 | } | |
2625 | ||
06ee5c75 JQ |
2626 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir_inode, |
2627 | OCFS2_I(inode)->ip_blkno, | |
2628 | orphan_name, | |
2629 | &orphan_insert, | |
2630 | true); | |
2631 | if (status < 0) { | |
2632 | mlog_errno(status); | |
2633 | goto bail_unlock_inode; | |
2634 | } | |
2635 | ||
2636 | handle = ocfs2_start_trans(osb, | |
2637 | OCFS2_INODE_ADD_TO_ORPHAN_CREDITS); | |
2638 | if (IS_ERR(handle)) { | |
2639 | status = PTR_ERR(handle); | |
2640 | goto bail_unlock_orphan; | |
2641 | } | |
2642 | ||
2643 | status = ocfs2_orphan_add(osb, handle, inode, di_bh, orphan_name, | |
2644 | &orphan_insert, orphan_dir_inode, true); | |
2645 | if (status) | |
2646 | mlog_errno(status); | |
2647 | ||
2648 | ocfs2_commit_trans(osb, handle); | |
2649 | ||
2650 | bail_unlock_orphan: | |
2651 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
2652 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2653 | iput(orphan_dir_inode); | |
2654 | ||
2655 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2656 | ||
2657 | bail_unlock_inode: | |
2658 | ocfs2_inode_unlock(inode, 1); | |
2659 | brelse(di_bh); | |
2660 | ||
2661 | bail: | |
2662 | return status; | |
2663 | } | |
2664 | ||
2665 | int ocfs2_del_inode_from_orphan(struct ocfs2_super *osb, | |
cf1776a9 JQ |
2666 | struct inode *inode, struct buffer_head *di_bh, |
2667 | int update_isize, loff_t end) | |
06ee5c75 JQ |
2668 | { |
2669 | struct inode *orphan_dir_inode = NULL; | |
2670 | struct buffer_head *orphan_dir_bh = NULL; | |
cf1776a9 | 2671 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data; |
06ee5c75 JQ |
2672 | handle_t *handle = NULL; |
2673 | int status = 0; | |
2674 | ||
06ee5c75 JQ |
2675 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
2676 | ORPHAN_DIR_SYSTEM_INODE, | |
2677 | le16_to_cpu(di->i_dio_orphaned_slot)); | |
2678 | if (!orphan_dir_inode) { | |
2679 | status = -ENOENT; | |
2680 | mlog_errno(status); | |
cf1776a9 | 2681 | goto bail; |
06ee5c75 JQ |
2682 | } |
2683 | ||
2684 | mutex_lock(&orphan_dir_inode->i_mutex); | |
2685 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2686 | if (status < 0) { | |
2687 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2688 | iput(orphan_dir_inode); | |
2689 | mlog_errno(status); | |
cf1776a9 | 2690 | goto bail; |
06ee5c75 JQ |
2691 | } |
2692 | ||
2693 | handle = ocfs2_start_trans(osb, | |
2694 | OCFS2_INODE_DEL_FROM_ORPHAN_CREDITS); | |
2695 | if (IS_ERR(handle)) { | |
2696 | status = PTR_ERR(handle); | |
2697 | goto bail_unlock_orphan; | |
2698 | } | |
2699 | ||
2700 | BUG_ON(!(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))); | |
2701 | ||
2702 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, | |
2703 | inode, orphan_dir_bh, true); | |
2704 | if (status < 0) { | |
2705 | mlog_errno(status); | |
2706 | goto bail_commit; | |
2707 | } | |
2708 | ||
2709 | status = ocfs2_journal_access_di(handle, | |
2710 | INODE_CACHE(inode), | |
2711 | di_bh, | |
2712 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2713 | if (status < 0) { | |
2714 | mlog_errno(status); | |
2715 | goto bail_commit; | |
2716 | } | |
2717 | ||
2718 | di->i_flags &= ~cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2719 | di->i_dio_orphaned_slot = 0; | |
2720 | ||
2721 | if (update_isize) { | |
2722 | status = ocfs2_set_inode_size(handle, inode, di_bh, end); | |
2723 | if (status) | |
2724 | mlog_errno(status); | |
2725 | } else | |
2726 | ocfs2_journal_dirty(handle, di_bh); | |
2727 | ||
2728 | bail_commit: | |
2729 | ocfs2_commit_trans(osb, handle); | |
2730 | ||
2731 | bail_unlock_orphan: | |
2732 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
2733 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2734 | brelse(orphan_dir_bh); | |
2735 | iput(orphan_dir_inode); | |
2736 | ||
06ee5c75 JQ |
2737 | bail: |
2738 | return status; | |
2739 | } | |
2740 | ||
bc13d347 TM |
2741 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, |
2742 | struct inode *inode, | |
2743 | struct dentry *dentry) | |
2744 | { | |
2745 | int status = 0; | |
2746 | struct buffer_head *parent_di_bh = NULL; | |
2747 | handle_t *handle = NULL; | |
2748 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2749 | struct ocfs2_dinode *dir_di, *di; | |
2750 | struct inode *orphan_dir_inode = NULL; | |
2751 | struct buffer_head *orphan_dir_bh = NULL; | |
2752 | struct buffer_head *di_bh = NULL; | |
2753 | struct ocfs2_dir_lookup_result lookup = { NULL, }; | |
2754 | ||
8990e44a TM |
2755 | trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry, |
2756 | dentry->d_name.len, dentry->d_name.name, | |
2757 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
2758 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
bc13d347 TM |
2759 | |
2760 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2761 | if (status < 0) { | |
2762 | if (status != -ENOENT) | |
2763 | mlog_errno(status); | |
2764 | return status; | |
2765 | } | |
2766 | ||
2767 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; | |
2768 | if (!dir_di->i_links_count) { | |
2769 | /* can't make a file in a deleted directory. */ | |
2770 | status = -ENOENT; | |
2771 | goto leave; | |
2772 | } | |
2773 | ||
2774 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
2775 | dentry->d_name.len); | |
2776 | if (status) | |
2777 | goto leave; | |
2778 | ||
2779 | /* get a spot inside the dir. */ | |
2780 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, | |
2781 | dentry->d_name.name, | |
2782 | dentry->d_name.len, &lookup); | |
2783 | if (status < 0) { | |
2784 | mlog_errno(status); | |
2785 | goto leave; | |
2786 | } | |
2787 | ||
2788 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2789 | ORPHAN_DIR_SYSTEM_INODE, | |
2790 | osb->slot_num); | |
2791 | if (!orphan_dir_inode) { | |
62f8b1f0 | 2792 | status = -ENOENT; |
bc13d347 TM |
2793 | mlog_errno(status); |
2794 | goto leave; | |
2795 | } | |
2796 | ||
2797 | mutex_lock(&orphan_dir_inode->i_mutex); | |
2798 | ||
2799 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2800 | if (status < 0) { | |
2801 | mlog_errno(status); | |
2802 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2803 | iput(orphan_dir_inode); | |
2804 | goto leave; | |
2805 | } | |
2806 | ||
2807 | status = ocfs2_read_inode_block(inode, &di_bh); | |
2808 | if (status < 0) { | |
2809 | mlog_errno(status); | |
2810 | goto orphan_unlock; | |
2811 | } | |
2812 | ||
2813 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); | |
2814 | if (IS_ERR(handle)) { | |
2815 | status = PTR_ERR(handle); | |
2816 | handle = NULL; | |
2817 | mlog_errno(status); | |
2818 | goto orphan_unlock; | |
2819 | } | |
2820 | ||
2821 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), | |
2822 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2823 | if (status < 0) { | |
2824 | mlog_errno(status); | |
2825 | goto out_commit; | |
2826 | } | |
2827 | ||
2828 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
06ee5c75 | 2829 | orphan_dir_bh, false); |
bc13d347 TM |
2830 | if (status < 0) { |
2831 | mlog_errno(status); | |
2832 | goto out_commit; | |
2833 | } | |
2834 | ||
2835 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
13eb9887 | 2836 | di->i_flags &= ~cpu_to_le32(OCFS2_ORPHANED_FL); |
bc13d347 | 2837 | di->i_orphaned_slot = 0; |
bfe86848 | 2838 | set_nlink(inode, 1); |
10cf1a02 | 2839 | ocfs2_set_links_count(di, inode->i_nlink); |
6fdb702d | 2840 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
bc13d347 TM |
2841 | ocfs2_journal_dirty(handle, di_bh); |
2842 | ||
2843 | status = ocfs2_add_entry(handle, dentry, inode, | |
2844 | OCFS2_I(inode)->ip_blkno, parent_di_bh, | |
2845 | &lookup); | |
2846 | if (status < 0) { | |
2847 | mlog_errno(status); | |
2848 | goto out_commit; | |
2849 | } | |
2850 | ||
2851 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
2852 | OCFS2_I(dir)->ip_blkno); | |
2853 | if (status) { | |
2854 | mlog_errno(status); | |
2855 | goto out_commit; | |
2856 | } | |
2857 | ||
bc13d347 TM |
2858 | d_instantiate(dentry, inode); |
2859 | status = 0; | |
2860 | out_commit: | |
2861 | ocfs2_commit_trans(osb, handle); | |
2862 | orphan_unlock: | |
2863 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
2864 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2865 | iput(orphan_dir_inode); | |
2866 | leave: | |
2867 | ||
2868 | ocfs2_inode_unlock(dir, 1); | |
2869 | ||
2870 | brelse(di_bh); | |
2871 | brelse(parent_di_bh); | |
2872 | brelse(orphan_dir_bh); | |
2873 | ||
2874 | ocfs2_free_dir_lookup_result(&lookup); | |
2875 | ||
c1e8d35e TM |
2876 | if (status) |
2877 | mlog_errno(status); | |
bc13d347 TM |
2878 | |
2879 | return status; | |
2880 | } | |
2881 | ||
92e1d5be | 2882 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2883 | .create = ocfs2_create, |
2884 | .lookup = ocfs2_lookup, | |
2885 | .link = ocfs2_link, | |
2886 | .unlink = ocfs2_unlink, | |
2887 | .rmdir = ocfs2_unlink, | |
2888 | .symlink = ocfs2_symlink, | |
2889 | .mkdir = ocfs2_mkdir, | |
2890 | .mknod = ocfs2_mknod, | |
2891 | .rename = ocfs2_rename, | |
2892 | .setattr = ocfs2_setattr, | |
2893 | .getattr = ocfs2_getattr, | |
d38eb8db | 2894 | .permission = ocfs2_permission, |
cf1d6c76 TY |
2895 | .setxattr = generic_setxattr, |
2896 | .getxattr = generic_getxattr, | |
2897 | .listxattr = ocfs2_listxattr, | |
2898 | .removexattr = generic_removexattr, | |
55f4946e | 2899 | .fiemap = ocfs2_fiemap, |
4e34e719 | 2900 | .get_acl = ocfs2_iop_get_acl, |
702e5bc6 | 2901 | .set_acl = ocfs2_iop_set_acl, |
ccd979bd | 2902 | }; |