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ccd979bd MF |
1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * namei.c | |
5 | * | |
6 | * Create and rename file, directory, symlinks | |
7 | * | |
8 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
9 | * | |
10 | * Portions of this code from linux/fs/ext3/dir.c | |
11 | * | |
12 | * Copyright (C) 1992, 1993, 1994, 1995 | |
13 | * Remy Card (card@masi.ibp.fr) | |
14 | * Laboratoire MASI - Institut Blaise pascal | |
15 | * Universite Pierre et Marie Curie (Paris VI) | |
16 | * | |
17 | * from | |
18 | * | |
19 | * linux/fs/minix/dir.c | |
20 | * | |
21 | * Copyright (C) 1991, 1992 Linux Torvalds | |
22 | * | |
23 | * This program is free software; you can redistribute it and/or | |
24 | * modify it under the terms of the GNU General Public | |
25 | * License as published by the Free Software Foundation; either | |
26 | * version 2 of the License, or (at your option) any later version. | |
27 | * | |
28 | * This program is distributed in the hope that it will be useful, | |
29 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
30 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
31 | * General Public License for more details. | |
32 | * | |
33 | * You should have received a copy of the GNU General Public | |
34 | * License along with this program; if not, write to the | |
35 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
36 | * Boston, MA 021110-1307, USA. | |
37 | */ | |
38 | ||
39 | #include <linux/fs.h> | |
40 | #include <linux/types.h> | |
41 | #include <linux/slab.h> | |
42 | #include <linux/highmem.h> | |
a90714c1 | 43 | #include <linux/quotaops.h> |
ccd979bd | 44 | |
ccd979bd MF |
45 | #include <cluster/masklog.h> |
46 | ||
47 | #include "ocfs2.h" | |
48 | ||
49 | #include "alloc.h" | |
50 | #include "dcache.h" | |
51 | #include "dir.h" | |
52 | #include "dlmglue.h" | |
53 | #include "extent_map.h" | |
54 | #include "file.h" | |
55 | #include "inode.h" | |
56 | #include "journal.h" | |
57 | #include "namei.h" | |
58 | #include "suballoc.h" | |
aa958874 | 59 | #include "super.h" |
ccd979bd MF |
60 | #include "symlink.h" |
61 | #include "sysfile.h" | |
62 | #include "uptodate.h" | |
cf1d6c76 | 63 | #include "xattr.h" |
89c38bd0 | 64 | #include "acl.h" |
8990e44a | 65 | #include "ocfs2_trace.h" |
ccd979bd MF |
66 | |
67 | #include "buffer_head_io.h" | |
68 | ||
ccd979bd MF |
69 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
70 | struct inode *dir, | |
f5d36202 | 71 | struct inode *inode, |
ccd979bd MF |
72 | dev_t dev, |
73 | struct buffer_head **new_fe_bh, | |
74 | struct buffer_head *parent_fe_bh, | |
1fabe148 | 75 | handle_t *handle, |
ccd979bd MF |
76 | struct ocfs2_alloc_context *inode_ac); |
77 | ||
ccd979bd | 78 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, |
5098c27b | 79 | struct inode **ret_orphan_dir, |
19bd341f | 80 | u64 blkno, |
ccd979bd | 81 | char *name, |
4a12ca3a | 82 | struct ocfs2_dir_lookup_result *lookup); |
ccd979bd MF |
83 | |
84 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 85 | handle_t *handle, |
ccd979bd | 86 | struct inode *inode, |
3939fda4 | 87 | struct buffer_head *fe_bh, |
ccd979bd | 88 | char *name, |
4a12ca3a | 89 | struct ocfs2_dir_lookup_result *lookup, |
5098c27b | 90 | struct inode *orphan_dir_inode); |
ccd979bd MF |
91 | |
92 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 93 | handle_t *handle, |
ccd979bd MF |
94 | struct inode *inode, |
95 | const char *symname); | |
96 | ||
ccd979bd MF |
97 | /* An orphan dir name is an 8 byte value, printed as a hex string */ |
98 | #define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64))) | |
99 | ||
100 | static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry, | |
101 | struct nameidata *nd) | |
102 | { | |
103 | int status; | |
104 | u64 blkno; | |
ccd979bd MF |
105 | struct inode *inode = NULL; |
106 | struct dentry *ret; | |
ccd979bd MF |
107 | struct ocfs2_inode_info *oi; |
108 | ||
8990e44a TM |
109 | trace_ocfs2_lookup(dir, dentry, dentry->d_name.len, |
110 | dentry->d_name.name, | |
111 | (unsigned long long)OCFS2_I(dir)->ip_blkno, 0); | |
ccd979bd MF |
112 | |
113 | if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) { | |
114 | ret = ERR_PTR(-ENAMETOOLONG); | |
115 | goto bail; | |
116 | } | |
117 | ||
cb25797d | 118 | status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT); |
ccd979bd MF |
119 | if (status < 0) { |
120 | if (status != -ENOENT) | |
121 | mlog_errno(status); | |
122 | ret = ERR_PTR(status); | |
123 | goto bail; | |
124 | } | |
125 | ||
be94d117 MF |
126 | status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name, |
127 | dentry->d_name.len, &blkno); | |
ccd979bd MF |
128 | if (status < 0) |
129 | goto bail_add; | |
130 | ||
5fa0613e | 131 | inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0); |
ccd979bd | 132 | if (IS_ERR(inode)) { |
ccd979bd MF |
133 | ret = ERR_PTR(-EACCES); |
134 | goto bail_unlock; | |
135 | } | |
136 | ||
137 | oi = OCFS2_I(inode); | |
138 | /* Clear any orphaned state... If we were able to look up the | |
139 | * inode from a directory, it certainly can't be orphaned. We | |
140 | * might have the bad state from a node which intended to | |
141 | * orphan this inode but crashed before it could commit the | |
142 | * unlink. */ | |
143 | spin_lock(&oi->ip_lock); | |
144 | oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED; | |
ccd979bd MF |
145 | spin_unlock(&oi->ip_lock); |
146 | ||
147 | bail_add: | |
ccd979bd MF |
148 | ret = d_splice_alias(inode, dentry); |
149 | ||
379dfe9d MF |
150 | if (inode) { |
151 | /* | |
152 | * If d_splice_alias() finds a DCACHE_DISCONNECTED | |
153 | * dentry, it will d_move() it on top of ourse. The | |
154 | * return value will indicate this however, so in | |
155 | * those cases, we switch them around for the locking | |
156 | * code. | |
157 | * | |
158 | * NOTE: This dentry already has ->d_op set from | |
159 | * ocfs2_get_parent() and ocfs2_get_dentry() | |
160 | */ | |
161 | if (ret) | |
162 | dentry = ret; | |
163 | ||
164 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
0027dd5b | 165 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
166 | if (status) { |
167 | mlog_errno(status); | |
168 | ret = ERR_PTR(status); | |
169 | goto bail_unlock; | |
170 | } | |
5e98d492 GR |
171 | } else |
172 | ocfs2_dentry_attach_gen(dentry); | |
379dfe9d | 173 | |
ccd979bd MF |
174 | bail_unlock: |
175 | /* Don't drop the cluster lock until *after* the d_add -- | |
176 | * unlink on another node will message us to remove that | |
177 | * dentry under this lock so otherwise we can race this with | |
34d024f8 | 178 | * the downconvert thread and have a stale dentry. */ |
e63aecb6 | 179 | ocfs2_inode_unlock(dir, 0); |
ccd979bd MF |
180 | |
181 | bail: | |
ccd979bd | 182 | |
8990e44a | 183 | trace_ocfs2_lookup_ret(ret); |
ccd979bd MF |
184 | |
185 | return ret; | |
186 | } | |
187 | ||
67697cbd | 188 | static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode) |
f5d36202 TY |
189 | { |
190 | struct inode *inode; | |
191 | ||
192 | inode = new_inode(dir->i_sb); | |
193 | if (!inode) { | |
194 | mlog(ML_ERROR, "new_inode failed!\n"); | |
195 | return NULL; | |
196 | } | |
197 | ||
198 | /* populate as many fields early on as possible - many of | |
199 | * these are used by the support functions here and in | |
200 | * callers. */ | |
201 | if (S_ISDIR(mode)) | |
bfe86848 | 202 | set_nlink(inode, 2); |
75fe0a24 | 203 | inode_init_owner(inode, dir, mode); |
871a2931 | 204 | dquot_initialize(inode); |
f5d36202 TY |
205 | return inode; |
206 | } | |
207 | ||
ccd979bd MF |
208 | static int ocfs2_mknod(struct inode *dir, |
209 | struct dentry *dentry, | |
1a67aafb | 210 | umode_t mode, |
ccd979bd MF |
211 | dev_t dev) |
212 | { | |
213 | int status = 0; | |
214 | struct buffer_head *parent_fe_bh = NULL; | |
1fabe148 | 215 | handle_t *handle = NULL; |
ccd979bd MF |
216 | struct ocfs2_super *osb; |
217 | struct ocfs2_dinode *dirfe; | |
218 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
219 | struct inode *inode = NULL; |
220 | struct ocfs2_alloc_context *inode_ac = NULL; | |
221 | struct ocfs2_alloc_context *data_ac = NULL; | |
9b7895ef | 222 | struct ocfs2_alloc_context *meta_ac = NULL; |
534eaddd | 223 | int want_clusters = 0; |
9b7895ef | 224 | int want_meta = 0; |
534eaddd TY |
225 | int xattr_credits = 0; |
226 | struct ocfs2_security_xattr_info si = { | |
227 | .enable = 1, | |
228 | }; | |
a90714c1 | 229 | int did_quota_inode = 0; |
4a12ca3a | 230 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
231 | sigset_t oldset; |
232 | int did_block_signals = 0; | |
ccd979bd | 233 | |
8990e44a TM |
234 | trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
235 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
236 | (unsigned long)dev, mode); | |
ccd979bd | 237 | |
871a2931 | 238 | dquot_initialize(dir); |
907f4554 | 239 | |
ccd979bd MF |
240 | /* get our super block */ |
241 | osb = OCFS2_SB(dir->i_sb); | |
242 | ||
e63aecb6 | 243 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
e3a82138 MF |
244 | if (status < 0) { |
245 | if (status != -ENOENT) | |
246 | mlog_errno(status); | |
247 | return status; | |
248 | } | |
249 | ||
198a1ca3 | 250 | if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) { |
a663e305 MF |
251 | status = -EMLINK; |
252 | goto leave; | |
253 | } | |
254 | ||
ccd979bd | 255 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
198a1ca3 | 256 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
257 | /* can't make a file in a deleted directory. */ |
258 | status = -ENOENT; | |
259 | goto leave; | |
260 | } | |
261 | ||
262 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
263 | dentry->d_name.len); | |
264 | if (status) | |
265 | goto leave; | |
266 | ||
267 | /* get a spot inside the dir. */ | |
268 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
269 | dentry->d_name.name, | |
4a12ca3a | 270 | dentry->d_name.len, &lookup); |
ccd979bd MF |
271 | if (status < 0) { |
272 | mlog_errno(status); | |
273 | goto leave; | |
274 | } | |
275 | ||
276 | /* reserve an inode spot */ | |
da5cbf2f | 277 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
278 | if (status < 0) { |
279 | if (status != -ENOSPC) | |
280 | mlog_errno(status); | |
281 | goto leave; | |
282 | } | |
283 | ||
f5d36202 TY |
284 | inode = ocfs2_get_init_inode(dir, mode); |
285 | if (!inode) { | |
286 | status = -ENOMEM; | |
287 | mlog_errno(status); | |
288 | goto leave; | |
289 | } | |
290 | ||
534eaddd | 291 | /* get security xattr */ |
2a7dba39 | 292 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
293 | if (status) { |
294 | if (status == -EOPNOTSUPP) | |
295 | si.enable = 0; | |
296 | else { | |
297 | mlog_errno(status); | |
298 | goto leave; | |
299 | } | |
300 | } | |
301 | ||
89c38bd0 TY |
302 | /* calculate meta data/clusters for setting security and acl xattr */ |
303 | status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode, | |
9b7895ef MF |
304 | &si, &want_clusters, |
305 | &xattr_credits, &want_meta); | |
89c38bd0 TY |
306 | if (status < 0) { |
307 | mlog_errno(status); | |
308 | goto leave; | |
ccd979bd MF |
309 | } |
310 | ||
534eaddd | 311 | /* Reserve a cluster if creating an extent based directory. */ |
9b7895ef | 312 | if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) { |
534eaddd TY |
313 | want_clusters += 1; |
314 | ||
9b7895ef | 315 | /* Dir indexing requires extra space as well */ |
4ed8a6bb | 316 | if (ocfs2_supports_indexed_dirs(osb)) |
9b7895ef | 317 | want_meta++; |
9b7895ef MF |
318 | } |
319 | ||
320 | status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac); | |
321 | if (status < 0) { | |
322 | if (status != -ENOSPC) | |
323 | mlog_errno(status); | |
324 | goto leave; | |
325 | } | |
326 | ||
534eaddd TY |
327 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); |
328 | if (status < 0) { | |
329 | if (status != -ENOSPC) | |
330 | mlog_errno(status); | |
331 | goto leave; | |
332 | } | |
333 | ||
9b7895ef MF |
334 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, |
335 | S_ISDIR(mode), | |
336 | xattr_credits)); | |
ccd979bd MF |
337 | if (IS_ERR(handle)) { |
338 | status = PTR_ERR(handle); | |
339 | handle = NULL; | |
340 | mlog_errno(status); | |
341 | goto leave; | |
342 | } | |
343 | ||
547ba7c8 JB |
344 | /* Starting to change things, restart is no longer possible. */ |
345 | ocfs2_block_signals(&oldset); | |
346 | did_block_signals = 1; | |
347 | ||
63936dda CH |
348 | status = dquot_alloc_inode(inode); |
349 | if (status) | |
a90714c1 | 350 | goto leave; |
a90714c1 JK |
351 | did_quota_inode = 1; |
352 | ||
ccd979bd | 353 | /* do the real work now. */ |
19bd341f | 354 | status = ocfs2_mknod_locked(osb, dir, inode, dev, |
ccd979bd | 355 | &new_fe_bh, parent_fe_bh, handle, |
f5d36202 | 356 | inode_ac); |
ccd979bd MF |
357 | if (status < 0) { |
358 | mlog_errno(status); | |
359 | goto leave; | |
360 | } | |
361 | ||
362 | if (S_ISDIR(mode)) { | |
363 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, | |
9b7895ef | 364 | new_fe_bh, data_ac, meta_ac); |
ccd979bd MF |
365 | if (status < 0) { |
366 | mlog_errno(status); | |
367 | goto leave; | |
368 | } | |
369 | ||
0cf2f763 JB |
370 | status = ocfs2_journal_access_di(handle, INODE_CACHE(dir), |
371 | parent_fe_bh, | |
13723d00 | 372 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
373 | if (status < 0) { |
374 | mlog_errno(status); | |
375 | goto leave; | |
376 | } | |
198a1ca3 | 377 | ocfs2_add_links_count(dirfe, 1); |
ec20cec7 | 378 | ocfs2_journal_dirty(handle, parent_fe_bh); |
d8c76e6f | 379 | inc_nlink(dir); |
ccd979bd MF |
380 | } |
381 | ||
89c38bd0 | 382 | status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh, |
9b7895ef | 383 | meta_ac, data_ac); |
89c38bd0 TY |
384 | if (status < 0) { |
385 | mlog_errno(status); | |
386 | goto leave; | |
387 | } | |
388 | ||
534eaddd TY |
389 | if (si.enable) { |
390 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
9b7895ef | 391 | meta_ac, data_ac); |
534eaddd TY |
392 | if (status < 0) { |
393 | mlog_errno(status); | |
394 | goto leave; | |
395 | } | |
396 | } | |
397 | ||
a9743fcd MF |
398 | /* |
399 | * Do this before adding the entry to the directory. We add | |
400 | * also set d_op after success so that ->d_iput() will cleanup | |
401 | * the dentry lock even if ocfs2_add_entry() fails below. | |
402 | */ | |
403 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
404 | OCFS2_I(dir)->ip_blkno); | |
405 | if (status) { | |
ccd979bd MF |
406 | mlog_errno(status); |
407 | goto leave; | |
408 | } | |
409 | ||
a9743fcd MF |
410 | status = ocfs2_add_entry(handle, dentry, inode, |
411 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
412 | &lookup); | |
413 | if (status < 0) { | |
379dfe9d MF |
414 | mlog_errno(status); |
415 | goto leave; | |
416 | } | |
417 | ||
ccd979bd | 418 | insert_inode_hash(inode); |
ccd979bd MF |
419 | d_instantiate(dentry, inode); |
420 | status = 0; | |
421 | leave: | |
a90714c1 | 422 | if (status < 0 && did_quota_inode) |
63936dda | 423 | dquot_free_inode(inode); |
ccd979bd | 424 | if (handle) |
02dc1af4 | 425 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 426 | |
e63aecb6 | 427 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
428 | if (did_block_signals) |
429 | ocfs2_unblock_signals(&oldset); | |
e3a82138 | 430 | |
a81cb88b | 431 | brelse(new_fe_bh); |
a81cb88b | 432 | brelse(parent_fe_bh); |
534eaddd TY |
433 | kfree(si.name); |
434 | kfree(si.value); | |
ccd979bd | 435 | |
4a12ca3a MF |
436 | ocfs2_free_dir_lookup_result(&lookup); |
437 | ||
ccd979bd MF |
438 | if (inode_ac) |
439 | ocfs2_free_alloc_context(inode_ac); | |
440 | ||
441 | if (data_ac) | |
442 | ocfs2_free_alloc_context(data_ac); | |
443 | ||
9b7895ef MF |
444 | if (meta_ac) |
445 | ocfs2_free_alloc_context(meta_ac); | |
534eaddd | 446 | |
062d3403 LD |
447 | /* |
448 | * We should call iput after the i_mutex of the bitmap been | |
449 | * unlocked in ocfs2_free_alloc_context, or the | |
450 | * ocfs2_delete_inode will mutex_lock again. | |
451 | */ | |
452 | if ((status < 0) && inode) { | |
453 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; | |
454 | clear_nlink(inode); | |
455 | iput(inode); | |
456 | } | |
457 | ||
c1e8d35e TM |
458 | if (status) |
459 | mlog_errno(status); | |
ccd979bd MF |
460 | |
461 | return status; | |
462 | } | |
463 | ||
021960ca MF |
464 | static int __ocfs2_mknod_locked(struct inode *dir, |
465 | struct inode *inode, | |
466 | dev_t dev, | |
467 | struct buffer_head **new_fe_bh, | |
468 | struct buffer_head *parent_fe_bh, | |
469 | handle_t *handle, | |
470 | struct ocfs2_alloc_context *inode_ac, | |
471 | u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit) | |
ccd979bd MF |
472 | { |
473 | int status = 0; | |
021960ca | 474 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
ccd979bd MF |
475 | struct ocfs2_dinode *fe = NULL; |
476 | struct ocfs2_extent_list *fel; | |
9b7895ef | 477 | u16 feat; |
ccd979bd | 478 | |
ccd979bd | 479 | *new_fe_bh = NULL; |
ccd979bd | 480 | |
ccd979bd MF |
481 | /* populate as many fields early on as possible - many of |
482 | * these are used by the support functions here and in | |
483 | * callers. */ | |
484 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
485 | OCFS2_I(inode)->ip_blkno = fe_blkno; | |
ccd979bd MF |
486 | spin_lock(&osb->osb_lock); |
487 | inode->i_generation = osb->s_next_generation++; | |
488 | spin_unlock(&osb->osb_lock); | |
489 | ||
490 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
491 | if (!*new_fe_bh) { | |
492 | status = -EIO; | |
493 | mlog_errno(status); | |
494 | goto leave; | |
495 | } | |
8cb471e8 | 496 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
ccd979bd | 497 | |
0cf2f763 JB |
498 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
499 | *new_fe_bh, | |
13723d00 | 500 | OCFS2_JOURNAL_ACCESS_CREATE); |
ccd979bd MF |
501 | if (status < 0) { |
502 | mlog_errno(status); | |
503 | goto leave; | |
504 | } | |
505 | ||
506 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
507 | memset(fe, 0, osb->sb->s_blocksize); | |
508 | ||
509 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
510 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
511 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
2b6cb576 | 512 | fe->i_suballoc_loc = cpu_to_le64(suballoc_loc); |
ccd979bd | 513 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); |
4d0ddb2c | 514 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
f5d36202 TY |
515 | fe->i_uid = cpu_to_le32(inode->i_uid); |
516 | fe->i_gid = cpu_to_le32(inode->i_gid); | |
517 | fe->i_mode = cpu_to_le16(inode->i_mode); | |
518 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 519 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
198a1ca3 MF |
520 | |
521 | ocfs2_set_links_count(fe, inode->i_nlink); | |
ccd979bd MF |
522 | |
523 | fe->i_last_eb_blk = 0; | |
524 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
525 | le32_add_cpu(&fe->i_flags, OCFS2_VALID_FL); | |
526 | fe->i_atime = fe->i_ctime = fe->i_mtime = | |
527 | cpu_to_le64(CURRENT_TIME.tv_sec); | |
528 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = | |
529 | cpu_to_le32(CURRENT_TIME.tv_nsec); | |
530 | fe->i_dtime = 0; | |
531 | ||
5b6a3a2b | 532 | /* |
9b7895ef MF |
533 | * If supported, directories start with inline data. If inline |
534 | * isn't supported, but indexing is, we start them as indexed. | |
5b6a3a2b | 535 | */ |
9b7895ef | 536 | feat = le16_to_cpu(fe->i_dyn_features); |
f5d36202 | 537 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
538 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
539 | ||
d9ae49d6 TY |
540 | fe->id2.i_data.id_count = cpu_to_le16( |
541 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); | |
5b6a3a2b MF |
542 | } else { |
543 | fel = &fe->id2.i_list; | |
544 | fel->l_tree_depth = 0; | |
545 | fel->l_next_free_rec = 0; | |
546 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
547 | } | |
ccd979bd | 548 | |
ec20cec7 | 549 | ocfs2_journal_dirty(handle, *new_fe_bh); |
ccd979bd | 550 | |
b657c95c | 551 | ocfs2_populate_inode(inode, fe, 1); |
0cf2f763 | 552 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
c271c5c2 SM |
553 | if (!ocfs2_mount_local(osb)) { |
554 | status = ocfs2_create_new_inode_locks(inode); | |
555 | if (status < 0) | |
556 | mlog_errno(status); | |
557 | } | |
ccd979bd MF |
558 | |
559 | status = 0; /* error in ocfs2_create_new_inode_locks is not | |
560 | * critical */ | |
561 | ||
ccd979bd MF |
562 | leave: |
563 | if (status < 0) { | |
564 | if (*new_fe_bh) { | |
565 | brelse(*new_fe_bh); | |
566 | *new_fe_bh = NULL; | |
567 | } | |
ccd979bd MF |
568 | } |
569 | ||
c1e8d35e TM |
570 | if (status) |
571 | mlog_errno(status); | |
ccd979bd MF |
572 | return status; |
573 | } | |
574 | ||
021960ca MF |
575 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
576 | struct inode *dir, | |
577 | struct inode *inode, | |
578 | dev_t dev, | |
579 | struct buffer_head **new_fe_bh, | |
580 | struct buffer_head *parent_fe_bh, | |
581 | handle_t *handle, | |
582 | struct ocfs2_alloc_context *inode_ac) | |
583 | { | |
584 | int status = 0; | |
585 | u64 suballoc_loc, fe_blkno = 0; | |
586 | u16 suballoc_bit; | |
587 | ||
588 | *new_fe_bh = NULL; | |
589 | ||
590 | status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh, | |
591 | inode_ac, &suballoc_loc, | |
592 | &suballoc_bit, &fe_blkno); | |
593 | if (status < 0) { | |
594 | mlog_errno(status); | |
595 | return status; | |
596 | } | |
597 | ||
598 | return __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh, | |
599 | parent_fe_bh, handle, inode_ac, | |
600 | fe_blkno, suballoc_loc, suballoc_bit); | |
601 | } | |
602 | ||
ccd979bd MF |
603 | static int ocfs2_mkdir(struct inode *dir, |
604 | struct dentry *dentry, | |
18bb1db3 | 605 | umode_t mode) |
ccd979bd MF |
606 | { |
607 | int ret; | |
608 | ||
8990e44a TM |
609 | trace_ocfs2_mkdir(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
610 | OCFS2_I(dir)->ip_blkno, mode); | |
ccd979bd | 611 | ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0); |
c1e8d35e TM |
612 | if (ret) |
613 | mlog_errno(ret); | |
ccd979bd MF |
614 | |
615 | return ret; | |
616 | } | |
617 | ||
618 | static int ocfs2_create(struct inode *dir, | |
619 | struct dentry *dentry, | |
4acdaf27 | 620 | umode_t mode, |
ccd979bd MF |
621 | struct nameidata *nd) |
622 | { | |
623 | int ret; | |
624 | ||
8990e44a TM |
625 | trace_ocfs2_create(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
626 | (unsigned long long)OCFS2_I(dir)->ip_blkno, mode); | |
ccd979bd | 627 | ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0); |
c1e8d35e TM |
628 | if (ret) |
629 | mlog_errno(ret); | |
ccd979bd MF |
630 | |
631 | return ret; | |
632 | } | |
633 | ||
634 | static int ocfs2_link(struct dentry *old_dentry, | |
635 | struct inode *dir, | |
636 | struct dentry *dentry) | |
637 | { | |
1fabe148 | 638 | handle_t *handle; |
ccd979bd MF |
639 | struct inode *inode = old_dentry->d_inode; |
640 | int err; | |
641 | struct buffer_head *fe_bh = NULL; | |
642 | struct buffer_head *parent_fe_bh = NULL; | |
ccd979bd MF |
643 | struct ocfs2_dinode *fe = NULL; |
644 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
4a12ca3a | 645 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 | 646 | sigset_t oldset; |
ccd979bd | 647 | |
8990e44a TM |
648 | trace_ocfs2_link((unsigned long long)OCFS2_I(inode)->ip_blkno, |
649 | old_dentry->d_name.len, old_dentry->d_name.name, | |
650 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 651 | |
123a9643 MF |
652 | if (S_ISDIR(inode->i_mode)) |
653 | return -EPERM; | |
ccd979bd | 654 | |
871a2931 | 655 | dquot_initialize(dir); |
907f4554 | 656 | |
cb25797d | 657 | err = ocfs2_inode_lock_nested(dir, &parent_fe_bh, 1, OI_LS_PARENT); |
ccd979bd MF |
658 | if (err < 0) { |
659 | if (err != -ENOENT) | |
660 | mlog_errno(err); | |
123a9643 | 661 | return err; |
ccd979bd MF |
662 | } |
663 | ||
0f62de2c TY |
664 | if (!dir->i_nlink) { |
665 | err = -ENOENT; | |
123a9643 | 666 | goto out; |
0f62de2c TY |
667 | } |
668 | ||
ccd979bd MF |
669 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
670 | dentry->d_name.len); | |
671 | if (err) | |
123a9643 | 672 | goto out; |
ccd979bd MF |
673 | |
674 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
675 | dentry->d_name.name, | |
4a12ca3a | 676 | dentry->d_name.len, &lookup); |
ccd979bd MF |
677 | if (err < 0) { |
678 | mlog_errno(err); | |
123a9643 | 679 | goto out; |
ccd979bd MF |
680 | } |
681 | ||
e63aecb6 | 682 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
683 | if (err < 0) { |
684 | if (err != -ENOENT) | |
685 | mlog_errno(err); | |
123a9643 | 686 | goto out; |
ccd979bd MF |
687 | } |
688 | ||
689 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
198a1ca3 | 690 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
ccd979bd | 691 | err = -EMLINK; |
123a9643 | 692 | goto out_unlock_inode; |
ccd979bd MF |
693 | } |
694 | ||
a90714c1 | 695 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
696 | if (IS_ERR(handle)) { |
697 | err = PTR_ERR(handle); | |
698 | handle = NULL; | |
699 | mlog_errno(err); | |
123a9643 | 700 | goto out_unlock_inode; |
ccd979bd MF |
701 | } |
702 | ||
547ba7c8 JB |
703 | /* Starting to change things, restart is no longer possible. */ |
704 | ocfs2_block_signals(&oldset); | |
705 | ||
0cf2f763 | 706 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 707 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
708 | if (err < 0) { |
709 | mlog_errno(err); | |
123a9643 | 710 | goto out_commit; |
ccd979bd MF |
711 | } |
712 | ||
d8c76e6f | 713 | inc_nlink(inode); |
ccd979bd | 714 | inode->i_ctime = CURRENT_TIME; |
198a1ca3 | 715 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
716 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
717 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
ec20cec7 | 718 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd MF |
719 | |
720 | err = ocfs2_add_entry(handle, dentry, inode, | |
721 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 722 | parent_fe_bh, &lookup); |
ccd979bd | 723 | if (err) { |
198a1ca3 | 724 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 725 | drop_nlink(inode); |
ccd979bd | 726 | mlog_errno(err); |
123a9643 | 727 | goto out_commit; |
ccd979bd MF |
728 | } |
729 | ||
0027dd5b | 730 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
731 | if (err) { |
732 | mlog_errno(err); | |
123a9643 | 733 | goto out_commit; |
379dfe9d MF |
734 | } |
735 | ||
7de9c6ee | 736 | ihold(inode); |
ccd979bd | 737 | d_instantiate(dentry, inode); |
123a9643 MF |
738 | |
739 | out_commit: | |
02dc1af4 | 740 | ocfs2_commit_trans(osb, handle); |
547ba7c8 | 741 | ocfs2_unblock_signals(&oldset); |
123a9643 | 742 | out_unlock_inode: |
e63aecb6 | 743 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
744 | |
745 | out: | |
e63aecb6 | 746 | ocfs2_inode_unlock(dir, 1); |
123a9643 | 747 | |
a81cb88b MF |
748 | brelse(fe_bh); |
749 | brelse(parent_fe_bh); | |
ccd979bd | 750 | |
4a12ca3a MF |
751 | ocfs2_free_dir_lookup_result(&lookup); |
752 | ||
c1e8d35e TM |
753 | if (err) |
754 | mlog_errno(err); | |
ccd979bd MF |
755 | |
756 | return err; | |
757 | } | |
758 | ||
379dfe9d MF |
759 | /* |
760 | * Takes and drops an exclusive lock on the given dentry. This will | |
761 | * force other nodes to drop it. | |
762 | */ | |
763 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
764 | { | |
765 | int ret; | |
766 | ||
767 | ret = ocfs2_dentry_lock(dentry, 1); | |
768 | if (ret) | |
769 | mlog_errno(ret); | |
770 | else | |
771 | ocfs2_dentry_unlock(dentry, 1); | |
772 | ||
773 | return ret; | |
774 | } | |
775 | ||
17ff7856 MF |
776 | static inline int inode_is_unlinkable(struct inode *inode) |
777 | { | |
778 | if (S_ISDIR(inode->i_mode)) { | |
779 | if (inode->i_nlink == 2) | |
780 | return 1; | |
781 | return 0; | |
782 | } | |
783 | ||
784 | if (inode->i_nlink == 1) | |
785 | return 1; | |
786 | return 0; | |
787 | } | |
788 | ||
ccd979bd MF |
789 | static int ocfs2_unlink(struct inode *dir, |
790 | struct dentry *dentry) | |
791 | { | |
792 | int status; | |
30a4f5e8 | 793 | int child_locked = 0; |
ccd979bd | 794 | struct inode *inode = dentry->d_inode; |
5098c27b | 795 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
796 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
797 | u64 blkno; | |
798 | struct ocfs2_dinode *fe = NULL; | |
799 | struct buffer_head *fe_bh = NULL; | |
800 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 801 | handle_t *handle = NULL; |
ccd979bd | 802 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
803 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
804 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd | 805 | |
8990e44a TM |
806 | trace_ocfs2_unlink(dir, dentry, dentry->d_name.len, |
807 | dentry->d_name.name, | |
808 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
809 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 810 | |
871a2931 | 811 | dquot_initialize(dir); |
907f4554 | 812 | |
ccd979bd MF |
813 | BUG_ON(dentry->d_parent->d_inode != dir); |
814 | ||
8990e44a | 815 | if (inode == osb->root_inode) |
30a4f5e8 | 816 | return -EPERM; |
ccd979bd | 817 | |
cb25797d JK |
818 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
819 | OI_LS_PARENT); | |
ccd979bd MF |
820 | if (status < 0) { |
821 | if (status != -ENOENT) | |
822 | mlog_errno(status); | |
30a4f5e8 | 823 | return status; |
ccd979bd MF |
824 | } |
825 | ||
826 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
827 | dentry->d_name.len, &blkno, dir, |
828 | &lookup); | |
ccd979bd MF |
829 | if (status < 0) { |
830 | if (status != -ENOENT) | |
831 | mlog_errno(status); | |
832 | goto leave; | |
833 | } | |
834 | ||
835 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
836 | status = -ENOENT; | |
837 | ||
8990e44a TM |
838 | trace_ocfs2_unlink_noent( |
839 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
840 | (unsigned long long)blkno, | |
841 | OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
842 | goto leave; |
843 | } | |
844 | ||
e63aecb6 | 845 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
846 | if (status < 0) { |
847 | if (status != -ENOENT) | |
848 | mlog_errno(status); | |
849 | goto leave; | |
850 | } | |
30a4f5e8 | 851 | child_locked = 1; |
ccd979bd MF |
852 | |
853 | if (S_ISDIR(inode->i_mode)) { | |
b80b549c | 854 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
ccd979bd MF |
855 | status = -ENOTEMPTY; |
856 | goto leave; | |
857 | } | |
858 | } | |
859 | ||
379dfe9d | 860 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 861 | if (status < 0) { |
34d024f8 | 862 | /* This remote delete should succeed under all normal |
ccd979bd MF |
863 | * circumstances. */ |
864 | mlog_errno(status); | |
865 | goto leave; | |
866 | } | |
867 | ||
17ff7856 | 868 | if (inode_is_unlinkable(inode)) { |
19bd341f TM |
869 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
870 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 871 | orphan_name, &orphan_insert); |
ccd979bd MF |
872 | if (status < 0) { |
873 | mlog_errno(status); | |
874 | goto leave; | |
875 | } | |
876 | } | |
877 | ||
a90714c1 | 878 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
879 | if (IS_ERR(handle)) { |
880 | status = PTR_ERR(handle); | |
881 | handle = NULL; | |
882 | mlog_errno(status); | |
883 | goto leave; | |
884 | } | |
885 | ||
0cf2f763 | 886 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 887 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
888 | if (status < 0) { |
889 | mlog_errno(status); | |
890 | goto leave; | |
891 | } | |
892 | ||
893 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
894 | ||
17ff7856 | 895 | if (inode_is_unlinkable(inode)) { |
3939fda4 | 896 | status = ocfs2_orphan_add(osb, handle, inode, fe_bh, orphan_name, |
4a12ca3a | 897 | &orphan_insert, orphan_dir); |
ccd979bd MF |
898 | if (status < 0) { |
899 | mlog_errno(status); | |
900 | goto leave; | |
901 | } | |
902 | } | |
903 | ||
904 | /* delete the name from the parent dir */ | |
4a12ca3a | 905 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
906 | if (status < 0) { |
907 | mlog_errno(status); | |
908 | goto leave; | |
909 | } | |
910 | ||
17ff7856 MF |
911 | if (S_ISDIR(inode->i_mode)) |
912 | drop_nlink(inode); | |
913 | drop_nlink(inode); | |
198a1ca3 | 914 | ocfs2_set_links_count(fe, inode->i_nlink); |
ec20cec7 | 915 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd | 916 | |
592282cf MF |
917 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; |
918 | if (S_ISDIR(inode->i_mode)) | |
17ff7856 | 919 | drop_nlink(dir); |
592282cf MF |
920 | |
921 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
922 | if (status < 0) { | |
923 | mlog_errno(status); | |
924 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 925 | inc_nlink(dir); |
ccd979bd MF |
926 | } |
927 | ||
928 | leave: | |
ccd979bd | 929 | if (handle) |
02dc1af4 | 930 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 931 | |
30a4f5e8 | 932 | if (child_locked) |
e63aecb6 | 933 | ocfs2_inode_unlock(inode, 1); |
30a4f5e8 | 934 | |
e63aecb6 | 935 | ocfs2_inode_unlock(dir, 1); |
30a4f5e8 | 936 | |
5098c27b MF |
937 | if (orphan_dir) { |
938 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 939 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
940 | mutex_unlock(&orphan_dir->i_mutex); |
941 | iput(orphan_dir); | |
942 | } | |
943 | ||
a81cb88b | 944 | brelse(fe_bh); |
a81cb88b | 945 | brelse(parent_node_bh); |
4a12ca3a MF |
946 | |
947 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
948 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd | 949 | |
c1e8d35e TM |
950 | if (status) |
951 | mlog_errno(status); | |
ccd979bd MF |
952 | |
953 | return status; | |
954 | } | |
955 | ||
956 | /* | |
957 | * The only place this should be used is rename! | |
958 | * if they have the same id, then the 1st one is the only one locked. | |
959 | */ | |
960 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
961 | struct buffer_head **bh1, |
962 | struct inode *inode1, | |
963 | struct buffer_head **bh2, | |
964 | struct inode *inode2) | |
965 | { | |
966 | int status; | |
967 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); | |
968 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
969 | struct buffer_head **tmpbh; | |
970 | struct inode *tmpinode; | |
971 | ||
8990e44a TM |
972 | trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno, |
973 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 974 | |
ccd979bd MF |
975 | if (*bh1) |
976 | *bh1 = NULL; | |
977 | if (*bh2) | |
978 | *bh2 = NULL; | |
979 | ||
980 | /* we always want to lock the one with the lower lockid first. */ | |
981 | if (oi1->ip_blkno != oi2->ip_blkno) { | |
982 | if (oi1->ip_blkno < oi2->ip_blkno) { | |
983 | /* switch id1 and id2 around */ | |
ccd979bd MF |
984 | tmpbh = bh2; |
985 | bh2 = bh1; | |
986 | bh1 = tmpbh; | |
987 | ||
988 | tmpinode = inode2; | |
989 | inode2 = inode1; | |
990 | inode1 = tmpinode; | |
991 | } | |
992 | /* lock id2 */ | |
cb25797d JK |
993 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
994 | OI_LS_RENAME1); | |
ccd979bd MF |
995 | if (status < 0) { |
996 | if (status != -ENOENT) | |
997 | mlog_errno(status); | |
998 | goto bail; | |
999 | } | |
1000 | } | |
8d5596c6 | 1001 | |
ccd979bd | 1002 | /* lock id1 */ |
cb25797d | 1003 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, OI_LS_RENAME2); |
ccd979bd | 1004 | if (status < 0) { |
8d5596c6 MF |
1005 | /* |
1006 | * An error return must mean that no cluster locks | |
1007 | * were held on function exit. | |
1008 | */ | |
1e6d9153 | 1009 | if (oi1->ip_blkno != oi2->ip_blkno) { |
e63aecb6 | 1010 | ocfs2_inode_unlock(inode2, 1); |
1e6d9153 TM |
1011 | brelse(*bh2); |
1012 | *bh2 = NULL; | |
1013 | } | |
8d5596c6 | 1014 | |
ccd979bd MF |
1015 | if (status != -ENOENT) |
1016 | mlog_errno(status); | |
ccd979bd | 1017 | } |
8d5596c6 | 1018 | |
8990e44a TM |
1019 | trace_ocfs2_double_lock_end( |
1020 | (unsigned long long)OCFS2_I(inode1)->ip_blkno, | |
1021 | (unsigned long long)OCFS2_I(inode2)->ip_blkno); | |
1022 | ||
ccd979bd | 1023 | bail: |
c1e8d35e TM |
1024 | if (status) |
1025 | mlog_errno(status); | |
ccd979bd MF |
1026 | return status; |
1027 | } | |
1028 | ||
8d5596c6 MF |
1029 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
1030 | { | |
e63aecb6 | 1031 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
1032 | |
1033 | if (inode1 != inode2) | |
e63aecb6 | 1034 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1035 | } |
1036 | ||
ccd979bd MF |
1037 | static int ocfs2_rename(struct inode *old_dir, |
1038 | struct dentry *old_dentry, | |
1039 | struct inode *new_dir, | |
1040 | struct dentry *new_dentry) | |
1041 | { | |
4a12ca3a MF |
1042 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1043 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
ccd979bd MF |
1044 | struct inode *old_inode = old_dentry->d_inode; |
1045 | struct inode *new_inode = new_dentry->d_inode; | |
5098c27b | 1046 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1047 | struct ocfs2_dinode *newfe = NULL; |
1048 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
ccd979bd | 1049 | struct buffer_head *newfe_bh = NULL; |
592282cf | 1050 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd | 1051 | struct ocfs2_super *osb = NULL; |
5b6a3a2b | 1052 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1053 | handle_t *handle = NULL; |
ccd979bd MF |
1054 | struct buffer_head *old_dir_bh = NULL; |
1055 | struct buffer_head *new_dir_bh = NULL; | |
847c9db5 | 1056 | u32 old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1057 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1058 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1059 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1060 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1061 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1062 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
ccd979bd MF |
1063 | |
1064 | /* At some point it might be nice to break this function up a | |
1065 | * bit. */ | |
1066 | ||
8990e44a TM |
1067 | trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry, |
1068 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1069 | new_dentry->d_name.len, new_dentry->d_name.name); | |
ccd979bd | 1070 | |
871a2931 CH |
1071 | dquot_initialize(old_dir); |
1072 | dquot_initialize(new_dir); | |
907f4554 | 1073 | |
ccd979bd MF |
1074 | osb = OCFS2_SB(old_dir->i_sb); |
1075 | ||
1076 | if (new_inode) { | |
1077 | if (!igrab(new_inode)) | |
1078 | BUG(); | |
1079 | } | |
1080 | ||
1b3c3714 | 1081 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1082 | * a/b/c |
1083 | * a/d | |
1084 | * a,b,c, and d are all directories. | |
1085 | * | |
1086 | * from cwd of 'a' on both nodes: | |
1087 | * node1: mv b/c d | |
1088 | * node2: mv d b/c | |
1089 | * | |
1090 | * And that's why, just like the VFS, we need a file system | |
1091 | * rename lock. */ | |
5dabd695 | 1092 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1093 | status = ocfs2_rename_lock(osb); |
1094 | if (status < 0) { | |
1095 | mlog_errno(status); | |
1096 | goto bail; | |
1097 | } | |
1098 | rename_lock = 1; | |
1099 | } | |
1100 | ||
ccd979bd | 1101 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 MF |
1102 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
1103 | &new_dir_bh, new_dir); | |
ccd979bd MF |
1104 | if (status < 0) { |
1105 | mlog_errno(status); | |
1106 | goto bail; | |
1107 | } | |
8d5596c6 | 1108 | parents_locked = 1; |
ccd979bd MF |
1109 | |
1110 | /* make sure both dirs have bhs | |
1111 | * get an extra ref on old_dir_bh if old==new */ | |
1112 | if (!new_dir_bh) { | |
1113 | if (old_dir_bh) { | |
1114 | new_dir_bh = old_dir_bh; | |
1115 | get_bh(new_dir_bh); | |
1116 | } else { | |
1117 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1118 | status = -EIO; | |
1119 | goto bail; | |
1120 | } | |
1121 | } | |
1122 | ||
379dfe9d | 1123 | /* |
592282cf | 1124 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1125 | * also ensures that the downconvert thread on other nodes |
1126 | * won't have to concurrently downconvert the inode and the | |
1127 | * dentry locks. | |
379dfe9d | 1128 | */ |
cb25797d JK |
1129 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
1130 | OI_LS_PARENT); | |
379dfe9d MF |
1131 | if (status < 0) { |
1132 | if (status != -ENOENT) | |
ccd979bd | 1133 | mlog_errno(status); |
379dfe9d MF |
1134 | goto bail; |
1135 | } | |
8d5596c6 | 1136 | old_child_locked = 1; |
ccd979bd | 1137 | |
379dfe9d MF |
1138 | status = ocfs2_remote_dentry_delete(old_dentry); |
1139 | if (status < 0) { | |
1140 | mlog_errno(status); | |
1141 | goto bail; | |
1142 | } | |
1143 | ||
1144 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1145 | u64 old_inode_parent; |
1146 | ||
4a12ca3a | 1147 | update_dot_dot = 1; |
38760e24 | 1148 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1149 | old_inode, |
1150 | &old_inode_dot_dot_res); | |
38760e24 MF |
1151 | if (status) { |
1152 | status = -EIO; | |
ccd979bd | 1153 | goto bail; |
38760e24 | 1154 | } |
ccd979bd | 1155 | |
38760e24 MF |
1156 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1157 | status = -EIO; | |
ccd979bd | 1158 | goto bail; |
38760e24 MF |
1159 | } |
1160 | ||
1161 | if (!new_inode && new_dir != old_dir && | |
198a1ca3 | 1162 | new_dir->i_nlink >= ocfs2_link_max(osb)) { |
38760e24 | 1163 | status = -EMLINK; |
ccd979bd | 1164 | goto bail; |
38760e24 | 1165 | } |
ccd979bd MF |
1166 | } |
1167 | ||
5b6a3a2b MF |
1168 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1169 | old_dentry->d_name.len, | |
1170 | &old_de_ino); | |
1171 | if (status) { | |
1172 | status = -ENOENT; | |
ccd979bd | 1173 | goto bail; |
5b6a3a2b | 1174 | } |
ccd979bd MF |
1175 | |
1176 | /* | |
1177 | * Check for inode number is _not_ due to possible IO errors. | |
1178 | * We might rmdir the source, keep it as pwd of some process | |
1179 | * and merrily kill the link to whatever was created under the | |
1180 | * same name. Goodbye sticky bit ;-< | |
1181 | */ | |
5b6a3a2b MF |
1182 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1183 | status = -ENOENT; | |
ccd979bd | 1184 | goto bail; |
5b6a3a2b | 1185 | } |
ccd979bd MF |
1186 | |
1187 | /* check if the target already exists (in which case we need | |
1188 | * to delete it */ | |
1189 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1190 | new_dentry->d_name.len, | |
4a12ca3a MF |
1191 | &newfe_blkno, new_dir, |
1192 | &target_lookup_res); | |
ccd979bd MF |
1193 | /* The only error we allow here is -ENOENT because the new |
1194 | * file not existing is perfectly valid. */ | |
1195 | if ((status < 0) && (status != -ENOENT)) { | |
1196 | /* If we cannot find the file specified we should just */ | |
1197 | /* return the error... */ | |
1198 | mlog_errno(status); | |
1199 | goto bail; | |
1200 | } | |
4a12ca3a MF |
1201 | if (status == 0) |
1202 | target_exists = 1; | |
ccd979bd | 1203 | |
4a12ca3a | 1204 | if (!target_exists && new_inode) { |
e325a88f SE |
1205 | /* |
1206 | * Target was unlinked by another node while we were | |
1207 | * waiting to get to ocfs2_rename(). There isn't | |
1208 | * anything we can do here to help the situation, so | |
1209 | * bubble up the appropriate error. | |
1210 | */ | |
1211 | status = -ENOENT; | |
1212 | goto bail; | |
1213 | } | |
ccd979bd MF |
1214 | |
1215 | /* In case we need to overwrite an existing file, we blow it | |
1216 | * away first */ | |
4a12ca3a | 1217 | if (target_exists) { |
ccd979bd MF |
1218 | /* VFS didn't think there existed an inode here, but |
1219 | * someone else in the cluster must have raced our | |
1220 | * rename to create one. Today we error cleanly, in | |
1221 | * the future we should consider calling iget to build | |
1222 | * a new struct inode for this entry. */ | |
1223 | if (!new_inode) { | |
1224 | status = -EACCES; | |
1225 | ||
8990e44a TM |
1226 | trace_ocfs2_rename_target_exists(new_dentry->d_name.len, |
1227 | new_dentry->d_name.name); | |
ccd979bd MF |
1228 | goto bail; |
1229 | } | |
1230 | ||
1231 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1232 | status = -EACCES; | |
1233 | ||
8990e44a | 1234 | trace_ocfs2_rename_disagree( |
b0697053 MF |
1235 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, |
1236 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1237 | OCFS2_I(new_inode)->ip_flags); |
1238 | goto bail; | |
1239 | } | |
1240 | ||
e63aecb6 | 1241 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1242 | if (status < 0) { |
1243 | if (status != -ENOENT) | |
1244 | mlog_errno(status); | |
1245 | goto bail; | |
1246 | } | |
8d5596c6 | 1247 | new_child_locked = 1; |
ccd979bd | 1248 | |
379dfe9d | 1249 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1250 | if (status < 0) { |
1251 | mlog_errno(status); | |
1252 | goto bail; | |
1253 | } | |
1254 | ||
1255 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1256 | ||
8990e44a | 1257 | trace_ocfs2_rename_over_existing( |
b0697053 | 1258 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1259 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1260 | ||
1261 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1262 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
19bd341f TM |
1263 | OCFS2_I(new_inode)->ip_blkno, |
1264 | orphan_name, &orphan_insert); | |
ccd979bd MF |
1265 | if (status < 0) { |
1266 | mlog_errno(status); | |
1267 | goto bail; | |
1268 | } | |
1269 | } | |
1270 | } else { | |
1271 | BUG_ON(new_dentry->d_parent->d_inode != new_dir); | |
1272 | ||
1273 | status = ocfs2_check_dir_for_entry(new_dir, | |
1274 | new_dentry->d_name.name, | |
1275 | new_dentry->d_name.len); | |
1276 | if (status) | |
1277 | goto bail; | |
1278 | ||
1279 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1280 | new_dentry->d_name.name, | |
1281 | new_dentry->d_name.len, | |
4a12ca3a | 1282 | &target_insert); |
ccd979bd MF |
1283 | if (status < 0) { |
1284 | mlog_errno(status); | |
1285 | goto bail; | |
1286 | } | |
1287 | } | |
1288 | ||
a90714c1 | 1289 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1290 | if (IS_ERR(handle)) { |
1291 | status = PTR_ERR(handle); | |
1292 | handle = NULL; | |
1293 | mlog_errno(status); | |
1294 | goto bail; | |
1295 | } | |
1296 | ||
4a12ca3a | 1297 | if (target_exists) { |
ccd979bd | 1298 | if (S_ISDIR(new_inode->i_mode)) { |
b80b549c MF |
1299 | if (new_inode->i_nlink != 2 || |
1300 | !ocfs2_empty_dir(new_inode)) { | |
ccd979bd MF |
1301 | status = -ENOTEMPTY; |
1302 | goto bail; | |
1303 | } | |
1304 | } | |
0cf2f763 JB |
1305 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
1306 | newfe_bh, | |
13723d00 | 1307 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1308 | if (status < 0) { |
1309 | mlog_errno(status); | |
1310 | goto bail; | |
1311 | } | |
1312 | ||
1313 | if (S_ISDIR(new_inode->i_mode) || | |
198a1ca3 | 1314 | (ocfs2_read_links_count(newfe) == 1)) { |
ccd979bd | 1315 | status = ocfs2_orphan_add(osb, handle, new_inode, |
3939fda4 | 1316 | newfe_bh, orphan_name, |
4a12ca3a | 1317 | &orphan_insert, orphan_dir); |
ccd979bd MF |
1318 | if (status < 0) { |
1319 | mlog_errno(status); | |
1320 | goto bail; | |
1321 | } | |
1322 | } | |
1323 | ||
1324 | /* change the dirent to point to the correct inode */ | |
4a12ca3a MF |
1325 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1326 | old_inode); | |
ccd979bd MF |
1327 | if (status < 0) { |
1328 | mlog_errno(status); | |
1329 | goto bail; | |
1330 | } | |
ccd979bd | 1331 | new_dir->i_version++; |
ccd979bd MF |
1332 | |
1333 | if (S_ISDIR(new_inode->i_mode)) | |
198a1ca3 | 1334 | ocfs2_set_links_count(newfe, 0); |
ccd979bd | 1335 | else |
198a1ca3 | 1336 | ocfs2_add_links_count(newfe, -1); |
ec20cec7 | 1337 | ocfs2_journal_dirty(handle, newfe_bh); |
ccd979bd MF |
1338 | } else { |
1339 | /* if the name was not found in new_dir, add it now */ | |
1340 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1341 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1342 | new_dir_bh, &target_insert); |
ccd979bd MF |
1343 | } |
1344 | ||
1345 | old_inode->i_ctime = CURRENT_TIME; | |
1346 | mark_inode_dirty(old_inode); | |
480214d7 | 1347 | |
0cf2f763 JB |
1348 | status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), |
1349 | old_inode_bh, | |
13723d00 | 1350 | OCFS2_JOURNAL_ACCESS_WRITE); |
480214d7 SM |
1351 | if (status >= 0) { |
1352 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1353 | ||
1354 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); | |
1355 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); | |
ec20cec7 | 1356 | ocfs2_journal_dirty(handle, old_inode_bh); |
480214d7 SM |
1357 | } else |
1358 | mlog_errno(status); | |
ccd979bd | 1359 | |
5b6a3a2b MF |
1360 | /* |
1361 | * Now that the name has been added to new_dir, remove the old name. | |
1362 | * | |
1363 | * We don't keep any directory entry context around until now | |
1364 | * because the insert might have changed the type of directory | |
1365 | * we're dealing with. | |
1366 | */ | |
4a12ca3a MF |
1367 | status = ocfs2_find_entry(old_dentry->d_name.name, |
1368 | old_dentry->d_name.len, old_dir, | |
1369 | &old_entry_lookup); | |
1370 | if (status) | |
5b6a3a2b | 1371 | goto bail; |
5b6a3a2b | 1372 | |
4a12ca3a | 1373 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
ccd979bd MF |
1374 | if (status < 0) { |
1375 | mlog_errno(status); | |
1376 | goto bail; | |
1377 | } | |
1378 | ||
1379 | if (new_inode) { | |
6d6b77f1 | 1380 | drop_nlink(new_inode); |
ccd979bd MF |
1381 | new_inode->i_ctime = CURRENT_TIME; |
1382 | } | |
1383 | old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME; | |
4a12ca3a MF |
1384 | |
1385 | if (update_dot_dot) { | |
1386 | status = ocfs2_update_entry(old_inode, handle, | |
1387 | &old_inode_dot_dot_res, new_dir); | |
6d6b77f1 | 1388 | drop_nlink(old_dir); |
ccd979bd | 1389 | if (new_inode) { |
6d6b77f1 | 1390 | drop_nlink(new_inode); |
ccd979bd | 1391 | } else { |
d8c76e6f | 1392 | inc_nlink(new_dir); |
ccd979bd MF |
1393 | mark_inode_dirty(new_dir); |
1394 | } | |
1395 | } | |
1396 | mark_inode_dirty(old_dir); | |
592282cf MF |
1397 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1398 | if (new_inode) { | |
ccd979bd | 1399 | mark_inode_dirty(new_inode); |
592282cf MF |
1400 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1401 | } | |
ccd979bd | 1402 | |
592282cf MF |
1403 | if (old_dir != new_dir) { |
1404 | /* Keep the same times on both directories.*/ | |
1405 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; | |
1406 | ||
1407 | /* | |
1408 | * This will also pick up the i_nlink change from the | |
1409 | * block above. | |
1410 | */ | |
1411 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1412 | } | |
ccd979bd MF |
1413 | |
1414 | if (old_dir_nlink != old_dir->i_nlink) { | |
1415 | if (!old_dir_bh) { | |
1416 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1417 | "%llu from %d to %d but bh is NULL!\n", |
1418 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1419 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1420 | } else { |
1421 | struct ocfs2_dinode *fe; | |
0cf2f763 JB |
1422 | status = ocfs2_journal_access_di(handle, |
1423 | INODE_CACHE(old_dir), | |
1424 | old_dir_bh, | |
1425 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd | 1426 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
198a1ca3 | 1427 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
ec20cec7 | 1428 | ocfs2_journal_dirty(handle, old_dir_bh); |
ccd979bd MF |
1429 | } |
1430 | } | |
379dfe9d | 1431 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1432 | status = 0; |
1433 | bail: | |
1434 | if (rename_lock) | |
1435 | ocfs2_rename_unlock(osb); | |
1436 | ||
1437 | if (handle) | |
02dc1af4 | 1438 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1439 | |
8d5596c6 MF |
1440 | if (parents_locked) |
1441 | ocfs2_double_unlock(old_dir, new_dir); | |
1442 | ||
1443 | if (old_child_locked) | |
e63aecb6 | 1444 | ocfs2_inode_unlock(old_inode, 1); |
8d5596c6 MF |
1445 | |
1446 | if (new_child_locked) | |
e63aecb6 | 1447 | ocfs2_inode_unlock(new_inode, 1); |
8d5596c6 | 1448 | |
5098c27b MF |
1449 | if (orphan_dir) { |
1450 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1451 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
1452 | mutex_unlock(&orphan_dir->i_mutex); |
1453 | iput(orphan_dir); | |
1454 | } | |
1455 | ||
ccd979bd MF |
1456 | if (new_inode) |
1457 | sync_mapping_buffers(old_inode->i_mapping); | |
1458 | ||
1459 | if (new_inode) | |
1460 | iput(new_inode); | |
4a12ca3a MF |
1461 | |
1462 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1463 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1464 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1465 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1466 | ocfs2_free_dir_lookup_result(&target_insert); | |
1467 | ||
a81cb88b MF |
1468 | brelse(newfe_bh); |
1469 | brelse(old_inode_bh); | |
1470 | brelse(old_dir_bh); | |
1471 | brelse(new_dir_bh); | |
ccd979bd | 1472 | |
c1e8d35e TM |
1473 | if (status) |
1474 | mlog_errno(status); | |
ccd979bd MF |
1475 | |
1476 | return status; | |
1477 | } | |
1478 | ||
1479 | /* | |
1480 | * we expect i_size = strlen(symname). Copy symname into the file | |
1481 | * data, including the null terminator. | |
1482 | */ | |
1483 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1484 | handle_t *handle, |
ccd979bd MF |
1485 | struct inode *inode, |
1486 | const char *symname) | |
1487 | { | |
1488 | struct buffer_head **bhs = NULL; | |
1489 | const char *c; | |
1490 | struct super_block *sb = osb->sb; | |
4f902c37 | 1491 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1492 | int virtual, blocks, status, i, bytes_left; |
1493 | ||
1494 | bytes_left = i_size_read(inode) + 1; | |
1495 | /* we can't trust i_blocks because we're actually going to | |
1496 | * write i_size + 1 bytes. */ | |
1497 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1498 | ||
8990e44a TM |
1499 | trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks, |
1500 | i_size_read(inode), blocks); | |
ccd979bd MF |
1501 | |
1502 | /* Sanity check -- make sure we're going to fit. */ | |
1503 | if (bytes_left > | |
1504 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1505 | status = -EIO; | |
1506 | mlog_errno(status); | |
1507 | goto bail; | |
1508 | } | |
1509 | ||
1510 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1511 | if (!bhs) { | |
1512 | status = -ENOMEM; | |
1513 | mlog_errno(status); | |
1514 | goto bail; | |
1515 | } | |
1516 | ||
49cb8d2d MF |
1517 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1518 | NULL); | |
ccd979bd MF |
1519 | if (status < 0) { |
1520 | mlog_errno(status); | |
1521 | goto bail; | |
1522 | } | |
1523 | ||
1524 | /* links can never be larger than one cluster so we know this | |
1525 | * is all going to be contiguous, but do a sanity check | |
1526 | * anyway. */ | |
1527 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1528 | status = -EIO; | |
1529 | mlog_errno(status); | |
1530 | goto bail; | |
1531 | } | |
1532 | ||
1533 | virtual = 0; | |
1534 | while(bytes_left > 0) { | |
1535 | c = &symname[virtual * sb->s_blocksize]; | |
1536 | ||
1537 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1538 | if (!bhs[virtual]) { | |
1539 | status = -ENOMEM; | |
1540 | mlog_errno(status); | |
1541 | goto bail; | |
1542 | } | |
8cb471e8 JB |
1543 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
1544 | bhs[virtual]); | |
ccd979bd | 1545 | |
0cf2f763 JB |
1546 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
1547 | bhs[virtual], | |
ccd979bd MF |
1548 | OCFS2_JOURNAL_ACCESS_CREATE); |
1549 | if (status < 0) { | |
1550 | mlog_errno(status); | |
1551 | goto bail; | |
1552 | } | |
1553 | ||
1554 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1555 | ||
1556 | memcpy(bhs[virtual]->b_data, c, | |
1557 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1558 | bytes_left); | |
1559 | ||
ec20cec7 | 1560 | ocfs2_journal_dirty(handle, bhs[virtual]); |
ccd979bd MF |
1561 | |
1562 | virtual++; | |
1563 | p_blkno++; | |
1564 | bytes_left -= sb->s_blocksize; | |
1565 | } | |
1566 | ||
1567 | status = 0; | |
1568 | bail: | |
1569 | ||
1570 | if (bhs) { | |
1571 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1572 | brelse(bhs[i]); |
ccd979bd MF |
1573 | kfree(bhs); |
1574 | } | |
1575 | ||
c1e8d35e TM |
1576 | if (status) |
1577 | mlog_errno(status); | |
ccd979bd MF |
1578 | return status; |
1579 | } | |
1580 | ||
1581 | static int ocfs2_symlink(struct inode *dir, | |
1582 | struct dentry *dentry, | |
1583 | const char *symname) | |
1584 | { | |
1585 | int status, l, credits; | |
1586 | u64 newsize; | |
1587 | struct ocfs2_super *osb = NULL; | |
1588 | struct inode *inode = NULL; | |
1589 | struct super_block *sb; | |
1590 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1591 | struct buffer_head *parent_fe_bh = NULL; |
1592 | struct ocfs2_dinode *fe = NULL; | |
1593 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1594 | handle_t *handle = NULL; |
ccd979bd MF |
1595 | struct ocfs2_alloc_context *inode_ac = NULL; |
1596 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1597 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1598 | int want_clusters = 0; | |
1599 | int xattr_credits = 0; | |
1600 | struct ocfs2_security_xattr_info si = { | |
1601 | .enable = 1, | |
1602 | }; | |
a90714c1 | 1603 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1604 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
1605 | sigset_t oldset; |
1606 | int did_block_signals = 0; | |
ccd979bd | 1607 | |
8990e44a TM |
1608 | trace_ocfs2_symlink_begin(dir, dentry, symname, |
1609 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 1610 | |
871a2931 | 1611 | dquot_initialize(dir); |
907f4554 | 1612 | |
ccd979bd MF |
1613 | sb = dir->i_sb; |
1614 | osb = OCFS2_SB(sb); | |
1615 | ||
1616 | l = strlen(symname) + 1; | |
1617 | ||
1618 | credits = ocfs2_calc_symlink_credits(sb); | |
1619 | ||
ccd979bd | 1620 | /* lock the parent directory */ |
e63aecb6 | 1621 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1622 | if (status < 0) { |
1623 | if (status != -ENOENT) | |
1624 | mlog_errno(status); | |
6d8fc40e | 1625 | return status; |
ccd979bd MF |
1626 | } |
1627 | ||
1628 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
198a1ca3 | 1629 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
1630 | /* can't make a file in a deleted directory. */ |
1631 | status = -ENOENT; | |
1632 | goto bail; | |
1633 | } | |
1634 | ||
1635 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1636 | dentry->d_name.len); | |
1637 | if (status) | |
1638 | goto bail; | |
1639 | ||
1640 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1641 | dentry->d_name.name, | |
4a12ca3a | 1642 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1643 | if (status < 0) { |
1644 | mlog_errno(status); | |
1645 | goto bail; | |
1646 | } | |
1647 | ||
da5cbf2f | 1648 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1649 | if (status < 0) { |
1650 | if (status != -ENOSPC) | |
1651 | mlog_errno(status); | |
1652 | goto bail; | |
1653 | } | |
1654 | ||
f5d36202 TY |
1655 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
1656 | if (!inode) { | |
1657 | status = -ENOMEM; | |
1658 | mlog_errno(status); | |
1659 | goto bail; | |
1660 | } | |
1661 | ||
534eaddd | 1662 | /* get security xattr */ |
2a7dba39 | 1663 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
1664 | if (status) { |
1665 | if (status == -EOPNOTSUPP) | |
1666 | si.enable = 0; | |
1667 | else { | |
1668 | mlog_errno(status); | |
1669 | goto bail; | |
1670 | } | |
1671 | } | |
1672 | ||
1673 | /* calculate meta data/clusters for setting security xattr */ | |
1674 | if (si.enable) { | |
1675 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1676 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1677 | if (status < 0) { |
534eaddd | 1678 | mlog_errno(status); |
ccd979bd MF |
1679 | goto bail; |
1680 | } | |
1681 | } | |
1682 | ||
534eaddd TY |
1683 | /* don't reserve bitmap space for fast symlinks. */ |
1684 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1685 | want_clusters += 1; | |
1686 | ||
1687 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1688 | if (status < 0) { | |
1689 | if (status != -ENOSPC) | |
1690 | mlog_errno(status); | |
1691 | goto bail; | |
1692 | } | |
1693 | ||
1694 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1695 | if (IS_ERR(handle)) { |
1696 | status = PTR_ERR(handle); | |
1697 | handle = NULL; | |
1698 | mlog_errno(status); | |
1699 | goto bail; | |
1700 | } | |
1701 | ||
547ba7c8 JB |
1702 | /* Starting to change things, restart is no longer possible. */ |
1703 | ocfs2_block_signals(&oldset); | |
1704 | did_block_signals = 1; | |
1705 | ||
63936dda CH |
1706 | status = dquot_alloc_inode(inode); |
1707 | if (status) | |
a90714c1 | 1708 | goto bail; |
a90714c1 JK |
1709 | did_quota_inode = 1; |
1710 | ||
8990e44a TM |
1711 | trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len, |
1712 | dentry->d_name.name, | |
1713 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
1714 | inode->i_mode); | |
19bd341f TM |
1715 | |
1716 | status = ocfs2_mknod_locked(osb, dir, inode, | |
f5d36202 TY |
1717 | 0, &new_fe_bh, parent_fe_bh, handle, |
1718 | inode_ac); | |
ccd979bd MF |
1719 | if (status < 0) { |
1720 | mlog_errno(status); | |
1721 | goto bail; | |
1722 | } | |
1723 | ||
1724 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1725 | inode->i_rdev = 0; | |
1726 | newsize = l - 1; | |
1727 | if (l > ocfs2_fast_symlink_chars(sb)) { | |
dcd0538f MF |
1728 | u32 offset = 0; |
1729 | ||
ccd979bd | 1730 | inode->i_op = &ocfs2_symlink_inode_operations; |
5dd4056d CH |
1731 | status = dquot_alloc_space_nodirty(inode, |
1732 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1733 | if (status) | |
a90714c1 | 1734 | goto bail; |
a90714c1 | 1735 | did_quota = 1; |
0eb8d47e TM |
1736 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1737 | new_fe_bh, | |
1738 | handle, data_ac, NULL, | |
1739 | NULL); | |
ccd979bd MF |
1740 | if (status < 0) { |
1741 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1742 | mlog(ML_ERROR, |
1743 | "Failed to extend file to %llu\n", | |
1744 | (unsigned long long)newsize); | |
ccd979bd MF |
1745 | mlog_errno(status); |
1746 | status = -ENOSPC; | |
1747 | } | |
1748 | goto bail; | |
1749 | } | |
1750 | i_size_write(inode, newsize); | |
8110b073 | 1751 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd MF |
1752 | } else { |
1753 | inode->i_op = &ocfs2_fast_symlink_inode_operations; | |
1754 | memcpy((char *) fe->id2.i_symlink, symname, l); | |
1755 | i_size_write(inode, newsize); | |
1756 | inode->i_blocks = 0; | |
1757 | } | |
1758 | ||
1759 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1760 | if (status < 0) { | |
1761 | mlog_errno(status); | |
1762 | goto bail; | |
1763 | } | |
1764 | ||
1765 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
1766 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
1767 | symname); | |
1768 | if (status < 0) { | |
1769 | mlog_errno(status); | |
1770 | goto bail; | |
1771 | } | |
1772 | } | |
1773 | ||
534eaddd TY |
1774 | if (si.enable) { |
1775 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
1776 | xattr_ac, data_ac); | |
1777 | if (status < 0) { | |
1778 | mlog_errno(status); | |
1779 | goto bail; | |
1780 | } | |
1781 | } | |
1782 | ||
a9743fcd MF |
1783 | /* |
1784 | * Do this before adding the entry to the directory. We add | |
1785 | * also set d_op after success so that ->d_iput() will cleanup | |
1786 | * the dentry lock even if ocfs2_add_entry() fails below. | |
1787 | */ | |
1788 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); | |
1789 | if (status) { | |
ccd979bd MF |
1790 | mlog_errno(status); |
1791 | goto bail; | |
1792 | } | |
1793 | ||
a9743fcd MF |
1794 | status = ocfs2_add_entry(handle, dentry, inode, |
1795 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
1796 | &lookup); | |
1797 | if (status < 0) { | |
379dfe9d MF |
1798 | mlog_errno(status); |
1799 | goto bail; | |
1800 | } | |
1801 | ||
ccd979bd | 1802 | insert_inode_hash(inode); |
ccd979bd MF |
1803 | d_instantiate(dentry, inode); |
1804 | bail: | |
a90714c1 | 1805 | if (status < 0 && did_quota) |
5dd4056d | 1806 | dquot_free_space_nodirty(inode, |
a90714c1 JK |
1807 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
1808 | if (status < 0 && did_quota_inode) | |
63936dda | 1809 | dquot_free_inode(inode); |
ccd979bd | 1810 | if (handle) |
02dc1af4 | 1811 | ocfs2_commit_trans(osb, handle); |
6d8fc40e | 1812 | |
e63aecb6 | 1813 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
1814 | if (did_block_signals) |
1815 | ocfs2_unblock_signals(&oldset); | |
6d8fc40e | 1816 | |
a81cb88b MF |
1817 | brelse(new_fe_bh); |
1818 | brelse(parent_fe_bh); | |
534eaddd TY |
1819 | kfree(si.name); |
1820 | kfree(si.value); | |
4a12ca3a | 1821 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
1822 | if (inode_ac) |
1823 | ocfs2_free_alloc_context(inode_ac); | |
1824 | if (data_ac) | |
1825 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
1826 | if (xattr_ac) |
1827 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 | 1828 | if ((status < 0) && inode) { |
ab41fdc8 | 1829 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
f5d36202 | 1830 | clear_nlink(inode); |
ccd979bd | 1831 | iput(inode); |
f5d36202 | 1832 | } |
ccd979bd | 1833 | |
c1e8d35e TM |
1834 | if (status) |
1835 | mlog_errno(status); | |
ccd979bd MF |
1836 | |
1837 | return status; | |
1838 | } | |
1839 | ||
ccd979bd MF |
1840 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
1841 | { | |
1842 | int status, namelen; | |
1843 | ||
b0697053 MF |
1844 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
1845 | (long long)blkno); | |
ccd979bd MF |
1846 | if (namelen <= 0) { |
1847 | if (namelen) | |
1848 | status = namelen; | |
1849 | else | |
1850 | status = -EINVAL; | |
1851 | mlog_errno(status); | |
1852 | goto bail; | |
1853 | } | |
1854 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
1855 | status = -EINVAL; | |
1856 | mlog_errno(status); | |
1857 | goto bail; | |
1858 | } | |
1859 | ||
8990e44a | 1860 | trace_ocfs2_blkno_stringify(blkno, name, namelen); |
ccd979bd MF |
1861 | |
1862 | status = 0; | |
1863 | bail: | |
c1e8d35e TM |
1864 | if (status < 0) |
1865 | mlog_errno(status); | |
ccd979bd MF |
1866 | return status; |
1867 | } | |
1868 | ||
dd43bcde MF |
1869 | static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb, |
1870 | struct inode **ret_orphan_dir, | |
1871 | struct buffer_head **ret_orphan_dir_bh) | |
ccd979bd | 1872 | { |
5098c27b | 1873 | struct inode *orphan_dir_inode; |
ccd979bd | 1874 | struct buffer_head *orphan_dir_bh = NULL; |
dd43bcde | 1875 | int ret = 0; |
ccd979bd MF |
1876 | |
1877 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
1878 | ORPHAN_DIR_SYSTEM_INODE, | |
1879 | osb->slot_num); | |
1880 | if (!orphan_dir_inode) { | |
dd43bcde MF |
1881 | ret = -ENOENT; |
1882 | mlog_errno(ret); | |
1883 | return ret; | |
ccd979bd MF |
1884 | } |
1885 | ||
5098c27b MF |
1886 | mutex_lock(&orphan_dir_inode->i_mutex); |
1887 | ||
dd43bcde MF |
1888 | ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
1889 | if (ret < 0) { | |
1890 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
1891 | iput(orphan_dir_inode); | |
1892 | ||
1893 | mlog_errno(ret); | |
1894 | return ret; | |
ccd979bd MF |
1895 | } |
1896 | ||
dd43bcde MF |
1897 | *ret_orphan_dir = orphan_dir_inode; |
1898 | *ret_orphan_dir_bh = orphan_dir_bh; | |
5098c27b | 1899 | |
dd43bcde MF |
1900 | return 0; |
1901 | } | |
1902 | ||
1903 | static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode, | |
1904 | struct buffer_head *orphan_dir_bh, | |
1905 | u64 blkno, | |
1906 | char *name, | |
1907 | struct ocfs2_dir_lookup_result *lookup) | |
1908 | { | |
1909 | int ret; | |
1910 | struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb); | |
1911 | ||
1912 | ret = ocfs2_blkno_stringify(blkno, name); | |
1913 | if (ret < 0) { | |
1914 | mlog_errno(ret); | |
1915 | return ret; | |
1916 | } | |
1917 | ||
1918 | ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
1919 | orphan_dir_bh, name, | |
1920 | OCFS2_ORPHAN_NAMELEN, lookup); | |
1921 | if (ret < 0) { | |
1922 | mlog_errno(ret); | |
1923 | return ret; | |
1924 | } | |
1925 | ||
1926 | return 0; | |
1927 | } | |
1928 | ||
1929 | /** | |
1930 | * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for | |
1931 | * insertion of an orphan. | |
1932 | * @osb: ocfs2 file system | |
1933 | * @ret_orphan_dir: Orphan dir inode - returned locked! | |
1934 | * @blkno: Actual block number of the inode to be inserted into orphan dir. | |
1935 | * @lookup: dir lookup result, to be passed back into functions like | |
1936 | * ocfs2_orphan_add | |
1937 | * | |
1938 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
1939 | * fields will be populated. | |
1940 | * | |
1941 | * Returns non-zero on failure. | |
1942 | */ | |
1943 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
1944 | struct inode **ret_orphan_dir, | |
1945 | u64 blkno, | |
1946 | char *name, | |
1947 | struct ocfs2_dir_lookup_result *lookup) | |
1948 | { | |
1949 | struct inode *orphan_dir_inode = NULL; | |
1950 | struct buffer_head *orphan_dir_bh = NULL; | |
1951 | int ret = 0; | |
1952 | ||
1953 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode, | |
1954 | &orphan_dir_bh); | |
1955 | if (ret < 0) { | |
1956 | mlog_errno(ret); | |
1957 | return ret; | |
1958 | } | |
1959 | ||
1960 | ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh, | |
1961 | blkno, name, lookup); | |
1962 | if (ret < 0) { | |
1963 | mlog_errno(ret); | |
1964 | goto out; | |
ccd979bd MF |
1965 | } |
1966 | ||
5098c27b MF |
1967 | *ret_orphan_dir = orphan_dir_inode; |
1968 | ||
dd43bcde MF |
1969 | out: |
1970 | brelse(orphan_dir_bh); | |
1971 | ||
1972 | if (ret) { | |
1973 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5098c27b | 1974 | mutex_unlock(&orphan_dir_inode->i_mutex); |
ccd979bd | 1975 | iput(orphan_dir_inode); |
5098c27b | 1976 | } |
ccd979bd | 1977 | |
c1e8d35e TM |
1978 | if (ret) |
1979 | mlog_errno(ret); | |
dd43bcde | 1980 | return ret; |
ccd979bd MF |
1981 | } |
1982 | ||
1983 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 1984 | handle_t *handle, |
ccd979bd | 1985 | struct inode *inode, |
3939fda4 | 1986 | struct buffer_head *fe_bh, |
ccd979bd | 1987 | char *name, |
4a12ca3a | 1988 | struct ocfs2_dir_lookup_result *lookup, |
5098c27b | 1989 | struct inode *orphan_dir_inode) |
ccd979bd | 1990 | { |
ccd979bd MF |
1991 | struct buffer_head *orphan_dir_bh = NULL; |
1992 | int status = 0; | |
1993 | struct ocfs2_dinode *orphan_fe; | |
3939fda4 | 1994 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; |
ccd979bd | 1995 | |
8990e44a TM |
1996 | trace_ocfs2_orphan_add_begin( |
1997 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 1998 | |
b657c95c | 1999 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
2000 | if (status < 0) { |
2001 | mlog_errno(status); | |
2002 | goto leave; | |
2003 | } | |
2004 | ||
0cf2f763 JB |
2005 | status = ocfs2_journal_access_di(handle, |
2006 | INODE_CACHE(orphan_dir_inode), | |
2007 | orphan_dir_bh, | |
13723d00 | 2008 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2009 | if (status < 0) { |
2010 | mlog_errno(status); | |
2011 | goto leave; | |
2012 | } | |
2013 | ||
2014 | /* we're a cluster, and nlink can change on disk from | |
2015 | * underneath us... */ | |
2016 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2017 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2018 | ocfs2_add_links_count(orphan_fe, 1); |
bfe86848 | 2019 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2020 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2021 | |
2022 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
2023 | OCFS2_ORPHAN_NAMELEN, inode, | |
2024 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 2025 | orphan_dir_bh, lookup); |
ccd979bd MF |
2026 | if (status < 0) { |
2027 | mlog_errno(status); | |
2028 | goto leave; | |
2029 | } | |
2030 | ||
3939fda4 TY |
2031 | /* |
2032 | * We're going to journal the change of i_flags and i_orphaned_slot. | |
2033 | * It's safe anyway, though some callers may duplicate the journaling. | |
2034 | * Journaling within the func just make the logic look more | |
2035 | * straightforward. | |
2036 | */ | |
2037 | status = ocfs2_journal_access_di(handle, | |
2038 | INODE_CACHE(inode), | |
2039 | fe_bh, | |
2040 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2041 | if (status < 0) { | |
2042 | mlog_errno(status); | |
2043 | goto leave; | |
2044 | } | |
2045 | ||
ccd979bd | 2046 | le32_add_cpu(&fe->i_flags, OCFS2_ORPHANED_FL); |
d4cd1871 | 2047 | OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR; |
ccd979bd MF |
2048 | |
2049 | /* Record which orphan dir our inode now resides | |
2050 | * in. delete_inode will use this to determine which orphan | |
2051 | * dir to lock. */ | |
50008630 | 2052 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); |
ccd979bd | 2053 | |
3939fda4 TY |
2054 | ocfs2_journal_dirty(handle, fe_bh); |
2055 | ||
8990e44a TM |
2056 | trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno, |
2057 | osb->slot_num); | |
ccd979bd MF |
2058 | |
2059 | leave: | |
a81cb88b | 2060 | brelse(orphan_dir_bh); |
ccd979bd | 2061 | |
c1e8d35e TM |
2062 | if (status) |
2063 | mlog_errno(status); | |
ccd979bd MF |
2064 | return status; |
2065 | } | |
2066 | ||
2067 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
2068 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 2069 | handle_t *handle, |
ccd979bd MF |
2070 | struct inode *orphan_dir_inode, |
2071 | struct inode *inode, | |
2072 | struct buffer_head *orphan_dir_bh) | |
2073 | { | |
2074 | char name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2075 | struct ocfs2_dinode *orphan_fe; | |
2076 | int status = 0; | |
4a12ca3a | 2077 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd | 2078 | |
ccd979bd MF |
2079 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); |
2080 | if (status < 0) { | |
2081 | mlog_errno(status); | |
2082 | goto leave; | |
2083 | } | |
2084 | ||
8990e44a TM |
2085 | trace_ocfs2_orphan_del( |
2086 | (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
2087 | name, OCFS2_ORPHAN_NAMELEN); | |
ccd979bd MF |
2088 | |
2089 | /* find it's spot in the orphan directory */ | |
4a12ca3a MF |
2090 | status = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, orphan_dir_inode, |
2091 | &lookup); | |
2092 | if (status) { | |
ccd979bd MF |
2093 | mlog_errno(status); |
2094 | goto leave; | |
2095 | } | |
2096 | ||
2097 | /* remove it from the orphan directory */ | |
4a12ca3a | 2098 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
2099 | if (status < 0) { |
2100 | mlog_errno(status); | |
2101 | goto leave; | |
2102 | } | |
2103 | ||
0cf2f763 JB |
2104 | status = ocfs2_journal_access_di(handle, |
2105 | INODE_CACHE(orphan_dir_inode), | |
2106 | orphan_dir_bh, | |
13723d00 | 2107 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2108 | if (status < 0) { |
2109 | mlog_errno(status); | |
2110 | goto leave; | |
2111 | } | |
2112 | ||
2113 | /* do the i_nlink dance! :) */ | |
2114 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2115 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2116 | ocfs2_add_links_count(orphan_fe, -1); |
bfe86848 | 2117 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2118 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2119 | |
2120 | leave: | |
4a12ca3a | 2121 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd | 2122 | |
c1e8d35e TM |
2123 | if (status) |
2124 | mlog_errno(status); | |
ccd979bd MF |
2125 | return status; |
2126 | } | |
2127 | ||
97b8f4a9 | 2128 | /** |
25985edc | 2129 | * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to receive a newly |
97b8f4a9 MF |
2130 | * allocated file. This is different from the typical 'add to orphan dir' |
2131 | * operation in that the inode does not yet exist. This is a problem because | |
2132 | * the orphan dir stringifies the inode block number to come up with it's | |
2133 | * dirent. Obviously if the inode does not yet exist we have a chicken and egg | |
2134 | * problem. This function works around it by calling deeper into the orphan | |
2135 | * and suballoc code than other callers. Use this only by necessity. | |
2136 | * @dir: The directory which this inode will ultimately wind up under - not the | |
2137 | * orphan dir! | |
2138 | * @dir_bh: buffer_head the @dir inode block | |
2139 | * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled | |
2140 | * with the string to be used for orphan dirent. Pass back to the orphan dir | |
2141 | * code. | |
2142 | * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan | |
2143 | * dir code. | |
2144 | * @ret_di_blkno: block number where the new inode will be allocated. | |
2145 | * @orphan_insert: Dir insert context to be passed back into orphan dir code. | |
2146 | * @ret_inode_ac: Inode alloc context to be passed back to the allocator. | |
2147 | * | |
2148 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2149 | * fields will be populated. | |
2150 | * | |
2151 | * Returns non-zero on failure. | |
2152 | */ | |
2153 | static int ocfs2_prep_new_orphaned_file(struct inode *dir, | |
2154 | struct buffer_head *dir_bh, | |
2155 | char *orphan_name, | |
2156 | struct inode **ret_orphan_dir, | |
2157 | u64 *ret_di_blkno, | |
2158 | struct ocfs2_dir_lookup_result *orphan_insert, | |
2159 | struct ocfs2_alloc_context **ret_inode_ac) | |
2160 | { | |
2161 | int ret; | |
2162 | u64 di_blkno; | |
2163 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2164 | struct inode *orphan_dir = NULL; | |
2165 | struct buffer_head *orphan_dir_bh = NULL; | |
2166 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2167 | ||
2168 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh); | |
2169 | if (ret < 0) { | |
2170 | mlog_errno(ret); | |
2171 | return ret; | |
2172 | } | |
2173 | ||
2174 | /* reserve an inode spot */ | |
2175 | ret = ocfs2_reserve_new_inode(osb, &inode_ac); | |
2176 | if (ret < 0) { | |
2177 | if (ret != -ENOSPC) | |
2178 | mlog_errno(ret); | |
2179 | goto out; | |
2180 | } | |
2181 | ||
2182 | ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac, | |
2183 | &di_blkno); | |
2184 | if (ret) { | |
2185 | mlog_errno(ret); | |
2186 | goto out; | |
2187 | } | |
2188 | ||
2189 | ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh, | |
2190 | di_blkno, orphan_name, orphan_insert); | |
2191 | if (ret < 0) { | |
2192 | mlog_errno(ret); | |
2193 | goto out; | |
2194 | } | |
2195 | ||
2196 | out: | |
2197 | if (ret == 0) { | |
2198 | *ret_orphan_dir = orphan_dir; | |
2199 | *ret_di_blkno = di_blkno; | |
2200 | *ret_inode_ac = inode_ac; | |
2201 | /* | |
2202 | * orphan_name and orphan_insert are already up to | |
2203 | * date via prepare_orphan_dir | |
2204 | */ | |
2205 | } else { | |
2206 | /* Unroll reserve_new_inode* */ | |
2207 | if (inode_ac) | |
2208 | ocfs2_free_alloc_context(inode_ac); | |
2209 | ||
2210 | /* Unroll orphan dir locking */ | |
2211 | mutex_unlock(&orphan_dir->i_mutex); | |
2212 | ocfs2_inode_unlock(orphan_dir, 1); | |
2213 | iput(orphan_dir); | |
2214 | } | |
2215 | ||
2216 | brelse(orphan_dir_bh); | |
2217 | ||
2218 | return 0; | |
2219 | } | |
2220 | ||
bc13d347 TM |
2221 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
2222 | int mode, | |
2223 | struct inode **new_inode) | |
2224 | { | |
2225 | int status, did_quota_inode = 0; | |
2226 | struct inode *inode = NULL; | |
2227 | struct inode *orphan_dir = NULL; | |
2228 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2229 | struct ocfs2_dinode *di = NULL; | |
2230 | handle_t *handle = NULL; | |
2231 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2232 | struct buffer_head *parent_di_bh = NULL; | |
2233 | struct buffer_head *new_di_bh = NULL; | |
2234 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2235 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
97b8f4a9 MF |
2236 | u64 uninitialized_var(di_blkno), suballoc_loc; |
2237 | u16 suballoc_bit; | |
bc13d347 TM |
2238 | |
2239 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2240 | if (status < 0) { | |
2241 | if (status != -ENOENT) | |
2242 | mlog_errno(status); | |
2243 | return status; | |
2244 | } | |
2245 | ||
97b8f4a9 MF |
2246 | status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh, |
2247 | orphan_name, &orphan_dir, | |
2248 | &di_blkno, &orphan_insert, &inode_ac); | |
bc13d347 TM |
2249 | if (status < 0) { |
2250 | if (status != -ENOSPC) | |
2251 | mlog_errno(status); | |
2252 | goto leave; | |
2253 | } | |
2254 | ||
2255 | inode = ocfs2_get_init_inode(dir, mode); | |
2256 | if (!inode) { | |
2257 | status = -ENOMEM; | |
2258 | mlog_errno(status); | |
2259 | goto leave; | |
2260 | } | |
2261 | ||
2262 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); | |
2263 | if (IS_ERR(handle)) { | |
2264 | status = PTR_ERR(handle); | |
2265 | handle = NULL; | |
2266 | mlog_errno(status); | |
2267 | goto leave; | |
2268 | } | |
2269 | ||
63936dda CH |
2270 | status = dquot_alloc_inode(inode); |
2271 | if (status) | |
bc13d347 | 2272 | goto leave; |
bc13d347 TM |
2273 | did_quota_inode = 1; |
2274 | ||
97b8f4a9 MF |
2275 | status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac, |
2276 | &suballoc_loc, | |
2277 | &suballoc_bit, di_blkno); | |
bc13d347 TM |
2278 | if (status < 0) { |
2279 | mlog_errno(status); | |
2280 | goto leave; | |
2281 | } | |
2282 | ||
6d6b77f1 | 2283 | clear_nlink(inode); |
97b8f4a9 MF |
2284 | /* do the real work now. */ |
2285 | status = __ocfs2_mknod_locked(dir, inode, | |
2286 | 0, &new_di_bh, parent_di_bh, handle, | |
2287 | inode_ac, di_blkno, suballoc_loc, | |
2288 | suballoc_bit); | |
bc13d347 TM |
2289 | if (status < 0) { |
2290 | mlog_errno(status); | |
2291 | goto leave; | |
2292 | } | |
2293 | ||
2294 | di = (struct ocfs2_dinode *)new_di_bh->b_data; | |
3939fda4 | 2295 | status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name, |
bc13d347 TM |
2296 | &orphan_insert, orphan_dir); |
2297 | if (status < 0) { | |
2298 | mlog_errno(status); | |
2299 | goto leave; | |
2300 | } | |
2301 | ||
2302 | /* get open lock so that only nodes can't remove it from orphan dir. */ | |
2303 | status = ocfs2_open_lock(inode); | |
2304 | if (status < 0) | |
2305 | mlog_errno(status); | |
2306 | ||
c7d260af | 2307 | insert_inode_hash(inode); |
bc13d347 TM |
2308 | leave: |
2309 | if (status < 0 && did_quota_inode) | |
63936dda | 2310 | dquot_free_inode(inode); |
bc13d347 TM |
2311 | if (handle) |
2312 | ocfs2_commit_trans(osb, handle); | |
2313 | ||
2314 | if (orphan_dir) { | |
2315 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
2316 | ocfs2_inode_unlock(orphan_dir, 1); | |
2317 | mutex_unlock(&orphan_dir->i_mutex); | |
2318 | iput(orphan_dir); | |
2319 | } | |
2320 | ||
bc13d347 TM |
2321 | if ((status < 0) && inode) { |
2322 | clear_nlink(inode); | |
2323 | iput(inode); | |
2324 | } | |
2325 | ||
2326 | if (inode_ac) | |
2327 | ocfs2_free_alloc_context(inode_ac); | |
2328 | ||
2329 | brelse(new_di_bh); | |
2330 | ||
2331 | if (!status) | |
2332 | *new_inode = inode; | |
2333 | ||
2334 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2335 | ||
2336 | ocfs2_inode_unlock(dir, 1); | |
2337 | brelse(parent_di_bh); | |
2338 | return status; | |
2339 | } | |
2340 | ||
2341 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, | |
2342 | struct inode *inode, | |
2343 | struct dentry *dentry) | |
2344 | { | |
2345 | int status = 0; | |
2346 | struct buffer_head *parent_di_bh = NULL; | |
2347 | handle_t *handle = NULL; | |
2348 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2349 | struct ocfs2_dinode *dir_di, *di; | |
2350 | struct inode *orphan_dir_inode = NULL; | |
2351 | struct buffer_head *orphan_dir_bh = NULL; | |
2352 | struct buffer_head *di_bh = NULL; | |
2353 | struct ocfs2_dir_lookup_result lookup = { NULL, }; | |
2354 | ||
8990e44a TM |
2355 | trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry, |
2356 | dentry->d_name.len, dentry->d_name.name, | |
2357 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
2358 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
bc13d347 TM |
2359 | |
2360 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2361 | if (status < 0) { | |
2362 | if (status != -ENOENT) | |
2363 | mlog_errno(status); | |
2364 | return status; | |
2365 | } | |
2366 | ||
2367 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; | |
2368 | if (!dir_di->i_links_count) { | |
2369 | /* can't make a file in a deleted directory. */ | |
2370 | status = -ENOENT; | |
2371 | goto leave; | |
2372 | } | |
2373 | ||
2374 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
2375 | dentry->d_name.len); | |
2376 | if (status) | |
2377 | goto leave; | |
2378 | ||
2379 | /* get a spot inside the dir. */ | |
2380 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, | |
2381 | dentry->d_name.name, | |
2382 | dentry->d_name.len, &lookup); | |
2383 | if (status < 0) { | |
2384 | mlog_errno(status); | |
2385 | goto leave; | |
2386 | } | |
2387 | ||
2388 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2389 | ORPHAN_DIR_SYSTEM_INODE, | |
2390 | osb->slot_num); | |
2391 | if (!orphan_dir_inode) { | |
2392 | status = -EEXIST; | |
2393 | mlog_errno(status); | |
2394 | goto leave; | |
2395 | } | |
2396 | ||
2397 | mutex_lock(&orphan_dir_inode->i_mutex); | |
2398 | ||
2399 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2400 | if (status < 0) { | |
2401 | mlog_errno(status); | |
2402 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2403 | iput(orphan_dir_inode); | |
2404 | goto leave; | |
2405 | } | |
2406 | ||
2407 | status = ocfs2_read_inode_block(inode, &di_bh); | |
2408 | if (status < 0) { | |
2409 | mlog_errno(status); | |
2410 | goto orphan_unlock; | |
2411 | } | |
2412 | ||
2413 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); | |
2414 | if (IS_ERR(handle)) { | |
2415 | status = PTR_ERR(handle); | |
2416 | handle = NULL; | |
2417 | mlog_errno(status); | |
2418 | goto orphan_unlock; | |
2419 | } | |
2420 | ||
2421 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), | |
2422 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2423 | if (status < 0) { | |
2424 | mlog_errno(status); | |
2425 | goto out_commit; | |
2426 | } | |
2427 | ||
2428 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
2429 | orphan_dir_bh); | |
2430 | if (status < 0) { | |
2431 | mlog_errno(status); | |
2432 | goto out_commit; | |
2433 | } | |
2434 | ||
2435 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
2436 | le32_add_cpu(&di->i_flags, -OCFS2_ORPHANED_FL); | |
2437 | di->i_orphaned_slot = 0; | |
bfe86848 | 2438 | set_nlink(inode, 1); |
10cf1a02 | 2439 | ocfs2_set_links_count(di, inode->i_nlink); |
bc13d347 TM |
2440 | ocfs2_journal_dirty(handle, di_bh); |
2441 | ||
2442 | status = ocfs2_add_entry(handle, dentry, inode, | |
2443 | OCFS2_I(inode)->ip_blkno, parent_di_bh, | |
2444 | &lookup); | |
2445 | if (status < 0) { | |
2446 | mlog_errno(status); | |
2447 | goto out_commit; | |
2448 | } | |
2449 | ||
2450 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
2451 | OCFS2_I(dir)->ip_blkno); | |
2452 | if (status) { | |
2453 | mlog_errno(status); | |
2454 | goto out_commit; | |
2455 | } | |
2456 | ||
bc13d347 TM |
2457 | d_instantiate(dentry, inode); |
2458 | status = 0; | |
2459 | out_commit: | |
2460 | ocfs2_commit_trans(osb, handle); | |
2461 | orphan_unlock: | |
2462 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
2463 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2464 | iput(orphan_dir_inode); | |
2465 | leave: | |
2466 | ||
2467 | ocfs2_inode_unlock(dir, 1); | |
2468 | ||
2469 | brelse(di_bh); | |
2470 | brelse(parent_di_bh); | |
2471 | brelse(orphan_dir_bh); | |
2472 | ||
2473 | ocfs2_free_dir_lookup_result(&lookup); | |
2474 | ||
c1e8d35e TM |
2475 | if (status) |
2476 | mlog_errno(status); | |
bc13d347 TM |
2477 | |
2478 | return status; | |
2479 | } | |
2480 | ||
92e1d5be | 2481 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2482 | .create = ocfs2_create, |
2483 | .lookup = ocfs2_lookup, | |
2484 | .link = ocfs2_link, | |
2485 | .unlink = ocfs2_unlink, | |
2486 | .rmdir = ocfs2_unlink, | |
2487 | .symlink = ocfs2_symlink, | |
2488 | .mkdir = ocfs2_mkdir, | |
2489 | .mknod = ocfs2_mknod, | |
2490 | .rename = ocfs2_rename, | |
2491 | .setattr = ocfs2_setattr, | |
2492 | .getattr = ocfs2_getattr, | |
d38eb8db | 2493 | .permission = ocfs2_permission, |
cf1d6c76 TY |
2494 | .setxattr = generic_setxattr, |
2495 | .getxattr = generic_getxattr, | |
2496 | .listxattr = ocfs2_listxattr, | |
2497 | .removexattr = generic_removexattr, | |
55f4946e | 2498 | .fiemap = ocfs2_fiemap, |
4e34e719 | 2499 | .get_acl = ocfs2_iop_get_acl, |
ccd979bd | 2500 | }; |