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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> |
cc56c33e | 44 | #include <linux/iversion.h> |
ccd979bd | 45 | |
ccd979bd MF |
46 | #include <cluster/masklog.h> |
47 | ||
48 | #include "ocfs2.h" | |
49 | ||
50 | #include "alloc.h" | |
51 | #include "dcache.h" | |
52 | #include "dir.h" | |
53 | #include "dlmglue.h" | |
54 | #include "extent_map.h" | |
55 | #include "file.h" | |
56 | #include "inode.h" | |
57 | #include "journal.h" | |
58 | #include "namei.h" | |
59 | #include "suballoc.h" | |
aa958874 | 60 | #include "super.h" |
ccd979bd MF |
61 | #include "symlink.h" |
62 | #include "sysfile.h" | |
63 | #include "uptodate.h" | |
cf1d6c76 | 64 | #include "xattr.h" |
89c38bd0 | 65 | #include "acl.h" |
8990e44a | 66 | #include "ocfs2_trace.h" |
ccd979bd MF |
67 | |
68 | #include "buffer_head_io.h" | |
69 | ||
ccd979bd MF |
70 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
71 | struct inode *dir, | |
f5d36202 | 72 | struct inode *inode, |
ccd979bd MF |
73 | dev_t dev, |
74 | struct buffer_head **new_fe_bh, | |
75 | struct buffer_head *parent_fe_bh, | |
1fabe148 | 76 | handle_t *handle, |
ccd979bd MF |
77 | struct ocfs2_alloc_context *inode_ac); |
78 | ||
ccd979bd | 79 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, |
5098c27b | 80 | struct inode **ret_orphan_dir, |
19bd341f | 81 | u64 blkno, |
ccd979bd | 82 | char *name, |
06ee5c75 JQ |
83 | struct ocfs2_dir_lookup_result *lookup, |
84 | bool dio); | |
ccd979bd MF |
85 | |
86 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 87 | handle_t *handle, |
ccd979bd | 88 | struct inode *inode, |
3939fda4 | 89 | struct buffer_head *fe_bh, |
ccd979bd | 90 | char *name, |
4a12ca3a | 91 | struct ocfs2_dir_lookup_result *lookup, |
06ee5c75 JQ |
92 | struct inode *orphan_dir_inode, |
93 | bool dio); | |
ccd979bd MF |
94 | |
95 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 96 | handle_t *handle, |
ccd979bd MF |
97 | struct inode *inode, |
98 | const char *symname); | |
99 | ||
53dc20b9 X |
100 | static int ocfs2_double_lock(struct ocfs2_super *osb, |
101 | struct buffer_head **bh1, | |
102 | struct inode *inode1, | |
103 | struct buffer_head **bh2, | |
104 | struct inode *inode2, | |
105 | int rename); | |
106 | ||
107 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2); | |
ccd979bd MF |
108 | /* An orphan dir name is an 8 byte value, printed as a hex string */ |
109 | #define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64))) | |
110 | ||
111 | static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry, | |
00cd8dd3 | 112 | unsigned int flags) |
ccd979bd MF |
113 | { |
114 | int status; | |
115 | u64 blkno; | |
ccd979bd MF |
116 | struct inode *inode = NULL; |
117 | struct dentry *ret; | |
ccd979bd MF |
118 | struct ocfs2_inode_info *oi; |
119 | ||
8990e44a TM |
120 | trace_ocfs2_lookup(dir, dentry, dentry->d_name.len, |
121 | dentry->d_name.name, | |
122 | (unsigned long long)OCFS2_I(dir)->ip_blkno, 0); | |
ccd979bd MF |
123 | |
124 | if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) { | |
125 | ret = ERR_PTR(-ENAMETOOLONG); | |
126 | goto bail; | |
127 | } | |
128 | ||
cb25797d | 129 | status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT); |
ccd979bd MF |
130 | if (status < 0) { |
131 | if (status != -ENOENT) | |
132 | mlog_errno(status); | |
133 | ret = ERR_PTR(status); | |
134 | goto bail; | |
135 | } | |
136 | ||
be94d117 MF |
137 | status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name, |
138 | dentry->d_name.len, &blkno); | |
ccd979bd MF |
139 | if (status < 0) |
140 | goto bail_add; | |
141 | ||
5fa0613e | 142 | inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0); |
ccd979bd | 143 | if (IS_ERR(inode)) { |
ccd979bd MF |
144 | ret = ERR_PTR(-EACCES); |
145 | goto bail_unlock; | |
146 | } | |
147 | ||
148 | oi = OCFS2_I(inode); | |
149 | /* Clear any orphaned state... If we were able to look up the | |
150 | * inode from a directory, it certainly can't be orphaned. We | |
151 | * might have the bad state from a node which intended to | |
152 | * orphan this inode but crashed before it could commit the | |
153 | * unlink. */ | |
154 | spin_lock(&oi->ip_lock); | |
155 | oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED; | |
ccd979bd MF |
156 | spin_unlock(&oi->ip_lock); |
157 | ||
158 | bail_add: | |
ccd979bd MF |
159 | ret = d_splice_alias(inode, dentry); |
160 | ||
379dfe9d MF |
161 | if (inode) { |
162 | /* | |
163 | * If d_splice_alias() finds a DCACHE_DISCONNECTED | |
164 | * dentry, it will d_move() it on top of ourse. The | |
165 | * return value will indicate this however, so in | |
166 | * those cases, we switch them around for the locking | |
167 | * code. | |
168 | * | |
169 | * NOTE: This dentry already has ->d_op set from | |
170 | * ocfs2_get_parent() and ocfs2_get_dentry() | |
171 | */ | |
d3556bab | 172 | if (!IS_ERR_OR_NULL(ret)) |
379dfe9d MF |
173 | dentry = ret; |
174 | ||
175 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
0027dd5b | 176 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
177 | if (status) { |
178 | mlog_errno(status); | |
179 | ret = ERR_PTR(status); | |
180 | goto bail_unlock; | |
181 | } | |
5e98d492 GR |
182 | } else |
183 | ocfs2_dentry_attach_gen(dentry); | |
379dfe9d | 184 | |
ccd979bd MF |
185 | bail_unlock: |
186 | /* Don't drop the cluster lock until *after* the d_add -- | |
187 | * unlink on another node will message us to remove that | |
188 | * dentry under this lock so otherwise we can race this with | |
34d024f8 | 189 | * the downconvert thread and have a stale dentry. */ |
e63aecb6 | 190 | ocfs2_inode_unlock(dir, 0); |
ccd979bd MF |
191 | |
192 | bail: | |
ccd979bd | 193 | |
8990e44a | 194 | trace_ocfs2_lookup_ret(ret); |
ccd979bd MF |
195 | |
196 | return ret; | |
197 | } | |
198 | ||
67697cbd | 199 | static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode) |
f5d36202 TY |
200 | { |
201 | struct inode *inode; | |
9c89fe0a | 202 | int status; |
f5d36202 TY |
203 | |
204 | inode = new_inode(dir->i_sb); | |
205 | if (!inode) { | |
206 | mlog(ML_ERROR, "new_inode failed!\n"); | |
9c89fe0a | 207 | return ERR_PTR(-ENOMEM); |
f5d36202 TY |
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); |
9c89fe0a JK |
216 | status = dquot_initialize(inode); |
217 | if (status) | |
218 | return ERR_PTR(status); | |
219 | ||
f5d36202 TY |
220 | return inode; |
221 | } | |
222 | ||
595297a8 | 223 | static void ocfs2_cleanup_add_entry_failure(struct ocfs2_super *osb, |
224 | struct dentry *dentry, struct inode *inode) | |
225 | { | |
226 | struct ocfs2_dentry_lock *dl = dentry->d_fsdata; | |
227 | ||
228 | ocfs2_simple_drop_lockres(osb, &dl->dl_lockres); | |
229 | ocfs2_lock_res_free(&dl->dl_lockres); | |
230 | BUG_ON(dl->dl_count != 1); | |
231 | spin_lock(&dentry_attach_lock); | |
232 | dentry->d_fsdata = NULL; | |
233 | spin_unlock(&dentry_attach_lock); | |
234 | kfree(dl); | |
235 | iput(inode); | |
236 | } | |
237 | ||
ccd979bd MF |
238 | static int ocfs2_mknod(struct inode *dir, |
239 | struct dentry *dentry, | |
1a67aafb | 240 | umode_t mode, |
ccd979bd MF |
241 | dev_t dev) |
242 | { | |
243 | int status = 0; | |
244 | struct buffer_head *parent_fe_bh = NULL; | |
1fabe148 | 245 | handle_t *handle = NULL; |
ccd979bd MF |
246 | struct ocfs2_super *osb; |
247 | struct ocfs2_dinode *dirfe; | |
248 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
249 | struct inode *inode = NULL; |
250 | struct ocfs2_alloc_context *inode_ac = NULL; | |
251 | struct ocfs2_alloc_context *data_ac = NULL; | |
9b7895ef | 252 | struct ocfs2_alloc_context *meta_ac = NULL; |
534eaddd | 253 | int want_clusters = 0; |
9b7895ef | 254 | int want_meta = 0; |
534eaddd TY |
255 | int xattr_credits = 0; |
256 | struct ocfs2_security_xattr_info si = { | |
257 | .enable = 1, | |
258 | }; | |
a90714c1 | 259 | int did_quota_inode = 0; |
4a12ca3a | 260 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
261 | sigset_t oldset; |
262 | int did_block_signals = 0; | |
595297a8 | 263 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 264 | |
8990e44a TM |
265 | trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
266 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
267 | (unsigned long)dev, mode); | |
ccd979bd | 268 | |
9c89fe0a JK |
269 | status = dquot_initialize(dir); |
270 | if (status) { | |
271 | mlog_errno(status); | |
272 | return status; | |
273 | } | |
907f4554 | 274 | |
ccd979bd MF |
275 | /* get our super block */ |
276 | osb = OCFS2_SB(dir->i_sb); | |
277 | ||
e63aecb6 | 278 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
e3a82138 MF |
279 | if (status < 0) { |
280 | if (status != -ENOENT) | |
281 | mlog_errno(status); | |
282 | return status; | |
283 | } | |
284 | ||
198a1ca3 | 285 | if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) { |
a663e305 MF |
286 | status = -EMLINK; |
287 | goto leave; | |
288 | } | |
289 | ||
ccd979bd | 290 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
198a1ca3 | 291 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
292 | /* can't make a file in a deleted directory. */ |
293 | status = -ENOENT; | |
294 | goto leave; | |
295 | } | |
296 | ||
297 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
298 | dentry->d_name.len); | |
299 | if (status) | |
300 | goto leave; | |
301 | ||
302 | /* get a spot inside the dir. */ | |
303 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
304 | dentry->d_name.name, | |
4a12ca3a | 305 | dentry->d_name.len, &lookup); |
ccd979bd MF |
306 | if (status < 0) { |
307 | mlog_errno(status); | |
308 | goto leave; | |
309 | } | |
310 | ||
311 | /* reserve an inode spot */ | |
da5cbf2f | 312 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
313 | if (status < 0) { |
314 | if (status != -ENOSPC) | |
315 | mlog_errno(status); | |
316 | goto leave; | |
317 | } | |
318 | ||
f5d36202 | 319 | inode = ocfs2_get_init_inode(dir, mode); |
9c89fe0a JK |
320 | if (IS_ERR(inode)) { |
321 | status = PTR_ERR(inode); | |
322 | inode = NULL; | |
f5d36202 TY |
323 | mlog_errno(status); |
324 | goto leave; | |
325 | } | |
326 | ||
534eaddd | 327 | /* get security xattr */ |
2a7dba39 | 328 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
329 | if (status) { |
330 | if (status == -EOPNOTSUPP) | |
331 | si.enable = 0; | |
332 | else { | |
333 | mlog_errno(status); | |
334 | goto leave; | |
335 | } | |
336 | } | |
337 | ||
89c38bd0 TY |
338 | /* calculate meta data/clusters for setting security and acl xattr */ |
339 | status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode, | |
9b7895ef MF |
340 | &si, &want_clusters, |
341 | &xattr_credits, &want_meta); | |
89c38bd0 TY |
342 | if (status < 0) { |
343 | mlog_errno(status); | |
344 | goto leave; | |
ccd979bd MF |
345 | } |
346 | ||
534eaddd | 347 | /* Reserve a cluster if creating an extent based directory. */ |
9b7895ef | 348 | if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) { |
534eaddd TY |
349 | want_clusters += 1; |
350 | ||
9b7895ef | 351 | /* Dir indexing requires extra space as well */ |
4ed8a6bb | 352 | if (ocfs2_supports_indexed_dirs(osb)) |
9b7895ef | 353 | want_meta++; |
9b7895ef MF |
354 | } |
355 | ||
356 | status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac); | |
357 | if (status < 0) { | |
358 | if (status != -ENOSPC) | |
359 | mlog_errno(status); | |
360 | goto leave; | |
361 | } | |
362 | ||
534eaddd TY |
363 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); |
364 | if (status < 0) { | |
365 | if (status != -ENOSPC) | |
366 | mlog_errno(status); | |
367 | goto leave; | |
368 | } | |
369 | ||
9b7895ef MF |
370 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, |
371 | S_ISDIR(mode), | |
372 | xattr_credits)); | |
ccd979bd MF |
373 | if (IS_ERR(handle)) { |
374 | status = PTR_ERR(handle); | |
375 | handle = NULL; | |
376 | mlog_errno(status); | |
377 | goto leave; | |
378 | } | |
379 | ||
547ba7c8 JB |
380 | /* Starting to change things, restart is no longer possible. */ |
381 | ocfs2_block_signals(&oldset); | |
382 | did_block_signals = 1; | |
383 | ||
63936dda CH |
384 | status = dquot_alloc_inode(inode); |
385 | if (status) | |
a90714c1 | 386 | goto leave; |
a90714c1 JK |
387 | did_quota_inode = 1; |
388 | ||
ccd979bd | 389 | /* do the real work now. */ |
19bd341f | 390 | status = ocfs2_mknod_locked(osb, dir, inode, dev, |
ccd979bd | 391 | &new_fe_bh, parent_fe_bh, handle, |
f5d36202 | 392 | inode_ac); |
ccd979bd MF |
393 | if (status < 0) { |
394 | mlog_errno(status); | |
395 | goto leave; | |
396 | } | |
397 | ||
398 | if (S_ISDIR(mode)) { | |
399 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, | |
9b7895ef | 400 | new_fe_bh, data_ac, meta_ac); |
ccd979bd MF |
401 | if (status < 0) { |
402 | mlog_errno(status); | |
403 | goto leave; | |
404 | } | |
405 | ||
0cf2f763 JB |
406 | status = ocfs2_journal_access_di(handle, INODE_CACHE(dir), |
407 | parent_fe_bh, | |
13723d00 | 408 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
409 | if (status < 0) { |
410 | mlog_errno(status); | |
411 | goto leave; | |
412 | } | |
198a1ca3 | 413 | ocfs2_add_links_count(dirfe, 1); |
ec20cec7 | 414 | ocfs2_journal_dirty(handle, parent_fe_bh); |
d8c76e6f | 415 | inc_nlink(dir); |
ccd979bd MF |
416 | } |
417 | ||
c25a1e06 JB |
418 | status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh, |
419 | meta_ac, data_ac); | |
702e5bc6 | 420 | |
89c38bd0 TY |
421 | if (status < 0) { |
422 | mlog_errno(status); | |
423 | goto leave; | |
424 | } | |
425 | ||
534eaddd TY |
426 | if (si.enable) { |
427 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
9b7895ef | 428 | meta_ac, data_ac); |
534eaddd TY |
429 | if (status < 0) { |
430 | mlog_errno(status); | |
431 | goto leave; | |
432 | } | |
433 | } | |
434 | ||
a9743fcd MF |
435 | /* |
436 | * Do this before adding the entry to the directory. We add | |
437 | * also set d_op after success so that ->d_iput() will cleanup | |
438 | * the dentry lock even if ocfs2_add_entry() fails below. | |
439 | */ | |
440 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
441 | OCFS2_I(dir)->ip_blkno); | |
442 | if (status) { | |
ccd979bd MF |
443 | mlog_errno(status); |
444 | goto leave; | |
445 | } | |
446 | ||
595297a8 | 447 | dl = dentry->d_fsdata; |
448 | ||
a9743fcd MF |
449 | status = ocfs2_add_entry(handle, dentry, inode, |
450 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
451 | &lookup); | |
452 | if (status < 0) { | |
379dfe9d MF |
453 | mlog_errno(status); |
454 | goto leave; | |
455 | } | |
456 | ||
ccd979bd | 457 | insert_inode_hash(inode); |
ccd979bd MF |
458 | d_instantiate(dentry, inode); |
459 | status = 0; | |
460 | leave: | |
a90714c1 | 461 | if (status < 0 && did_quota_inode) |
63936dda | 462 | dquot_free_inode(inode); |
ccd979bd | 463 | if (handle) |
02dc1af4 | 464 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 465 | |
e63aecb6 | 466 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
467 | if (did_block_signals) |
468 | ocfs2_unblock_signals(&oldset); | |
e3a82138 | 469 | |
a81cb88b | 470 | brelse(new_fe_bh); |
a81cb88b | 471 | brelse(parent_fe_bh); |
534eaddd | 472 | kfree(si.value); |
ccd979bd | 473 | |
4a12ca3a MF |
474 | ocfs2_free_dir_lookup_result(&lookup); |
475 | ||
ccd979bd MF |
476 | if (inode_ac) |
477 | ocfs2_free_alloc_context(inode_ac); | |
478 | ||
479 | if (data_ac) | |
480 | ocfs2_free_alloc_context(data_ac); | |
481 | ||
9b7895ef MF |
482 | if (meta_ac) |
483 | ocfs2_free_alloc_context(meta_ac); | |
534eaddd | 484 | |
062d3403 LD |
485 | /* |
486 | * We should call iput after the i_mutex of the bitmap been | |
487 | * unlocked in ocfs2_free_alloc_context, or the | |
488 | * ocfs2_delete_inode will mutex_lock again. | |
489 | */ | |
490 | if ((status < 0) && inode) { | |
595297a8 | 491 | if (dl) |
492 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
493 | ||
062d3403 LD |
494 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
495 | clear_nlink(inode); | |
496 | iput(inode); | |
497 | } | |
498 | ||
c1e8d35e TM |
499 | if (status) |
500 | mlog_errno(status); | |
ccd979bd MF |
501 | |
502 | return status; | |
503 | } | |
504 | ||
021960ca MF |
505 | static int __ocfs2_mknod_locked(struct inode *dir, |
506 | struct inode *inode, | |
507 | dev_t dev, | |
508 | struct buffer_head **new_fe_bh, | |
509 | struct buffer_head *parent_fe_bh, | |
510 | handle_t *handle, | |
511 | struct ocfs2_alloc_context *inode_ac, | |
512 | u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit) | |
ccd979bd MF |
513 | { |
514 | int status = 0; | |
021960ca | 515 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
ccd979bd MF |
516 | struct ocfs2_dinode *fe = NULL; |
517 | struct ocfs2_extent_list *fel; | |
9b7895ef | 518 | u16 feat; |
2931cdcb | 519 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
c62c38f6 | 520 | struct timespec64 ts; |
ccd979bd | 521 | |
ccd979bd | 522 | *new_fe_bh = NULL; |
ccd979bd | 523 | |
ccd979bd MF |
524 | /* populate as many fields early on as possible - many of |
525 | * these are used by the support functions here and in | |
526 | * callers. */ | |
527 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
d324cd4c | 528 | oi->ip_blkno = fe_blkno; |
ccd979bd MF |
529 | spin_lock(&osb->osb_lock); |
530 | inode->i_generation = osb->s_next_generation++; | |
531 | spin_unlock(&osb->osb_lock); | |
532 | ||
533 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
534 | if (!*new_fe_bh) { | |
7391a294 | 535 | status = -ENOMEM; |
ccd979bd MF |
536 | mlog_errno(status); |
537 | goto leave; | |
538 | } | |
8cb471e8 | 539 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
ccd979bd | 540 | |
0cf2f763 JB |
541 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
542 | *new_fe_bh, | |
13723d00 | 543 | OCFS2_JOURNAL_ACCESS_CREATE); |
ccd979bd MF |
544 | if (status < 0) { |
545 | mlog_errno(status); | |
546 | goto leave; | |
547 | } | |
548 | ||
549 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
550 | memset(fe, 0, osb->sb->s_blocksize); | |
551 | ||
552 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
553 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
554 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
2b6cb576 | 555 | fe->i_suballoc_loc = cpu_to_le64(suballoc_loc); |
ccd979bd | 556 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); |
4d0ddb2c | 557 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
2c034176 EB |
558 | fe->i_uid = cpu_to_le32(i_uid_read(inode)); |
559 | fe->i_gid = cpu_to_le32(i_gid_read(inode)); | |
f5d36202 TY |
560 | fe->i_mode = cpu_to_le16(inode->i_mode); |
561 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 562 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
198a1ca3 MF |
563 | |
564 | ocfs2_set_links_count(fe, inode->i_nlink); | |
ccd979bd MF |
565 | |
566 | fe->i_last_eb_blk = 0; | |
567 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
13eb9887 | 568 | fe->i_flags |= cpu_to_le32(OCFS2_VALID_FL); |
c62c38f6 | 569 | ktime_get_real_ts64(&ts); |
ccd979bd | 570 | fe->i_atime = fe->i_ctime = fe->i_mtime = |
c62c38f6 | 571 | cpu_to_le64(ts.tv_sec); |
ccd979bd | 572 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = |
c62c38f6 | 573 | cpu_to_le32(ts.tv_nsec); |
ccd979bd MF |
574 | fe->i_dtime = 0; |
575 | ||
5b6a3a2b | 576 | /* |
9b7895ef MF |
577 | * If supported, directories start with inline data. If inline |
578 | * isn't supported, but indexing is, we start them as indexed. | |
5b6a3a2b | 579 | */ |
9b7895ef | 580 | feat = le16_to_cpu(fe->i_dyn_features); |
f5d36202 | 581 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
582 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
583 | ||
d9ae49d6 TY |
584 | fe->id2.i_data.id_count = cpu_to_le16( |
585 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); | |
5b6a3a2b MF |
586 | } else { |
587 | fel = &fe->id2.i_list; | |
588 | fel->l_tree_depth = 0; | |
589 | fel->l_next_free_rec = 0; | |
590 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
591 | } | |
ccd979bd | 592 | |
ec20cec7 | 593 | ocfs2_journal_dirty(handle, *new_fe_bh); |
ccd979bd | 594 | |
b657c95c | 595 | ocfs2_populate_inode(inode, fe, 1); |
0cf2f763 | 596 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
c271c5c2 SM |
597 | if (!ocfs2_mount_local(osb)) { |
598 | status = ocfs2_create_new_inode_locks(inode); | |
599 | if (status < 0) | |
600 | mlog_errno(status); | |
601 | } | |
ccd979bd | 602 | |
2931cdcb DW |
603 | oi->i_sync_tid = handle->h_transaction->t_tid; |
604 | oi->i_datasync_tid = handle->h_transaction->t_tid; | |
605 | ||
ccd979bd MF |
606 | leave: |
607 | if (status < 0) { | |
608 | if (*new_fe_bh) { | |
609 | brelse(*new_fe_bh); | |
610 | *new_fe_bh = NULL; | |
611 | } | |
ccd979bd MF |
612 | } |
613 | ||
c1e8d35e TM |
614 | if (status) |
615 | mlog_errno(status); | |
ccd979bd MF |
616 | return status; |
617 | } | |
618 | ||
021960ca MF |
619 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
620 | struct inode *dir, | |
621 | struct inode *inode, | |
622 | dev_t dev, | |
623 | struct buffer_head **new_fe_bh, | |
624 | struct buffer_head *parent_fe_bh, | |
625 | handle_t *handle, | |
626 | struct ocfs2_alloc_context *inode_ac) | |
627 | { | |
628 | int status = 0; | |
629 | u64 suballoc_loc, fe_blkno = 0; | |
630 | u16 suballoc_bit; | |
631 | ||
632 | *new_fe_bh = NULL; | |
633 | ||
634 | status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh, | |
635 | inode_ac, &suballoc_loc, | |
636 | &suballoc_bit, &fe_blkno); | |
637 | if (status < 0) { | |
638 | mlog_errno(status); | |
639 | return status; | |
640 | } | |
641 | ||
b1529a41 | 642 | status = __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh, |
021960ca MF |
643 | parent_fe_bh, handle, inode_ac, |
644 | fe_blkno, suballoc_loc, suballoc_bit); | |
b1529a41 | 645 | if (status < 0) { |
646 | u64 bg_blkno = ocfs2_which_suballoc_group(fe_blkno, suballoc_bit); | |
647 | int tmp = ocfs2_free_suballoc_bits(handle, inode_ac->ac_inode, | |
648 | inode_ac->ac_bh, suballoc_bit, bg_blkno, 1); | |
649 | if (tmp) | |
650 | mlog_errno(tmp); | |
651 | } | |
652 | ||
653 | return status; | |
021960ca MF |
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 | |
9c89fe0a JK |
711 | err = dquot_initialize(dir); |
712 | if (err) { | |
713 | mlog_errno(err); | |
714 | return err; | |
715 | } | |
907f4554 | 716 | |
53dc20b9 X |
717 | err = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
718 | &parent_fe_bh, dir, 0); | |
ccd979bd MF |
719 | if (err < 0) { |
720 | if (err != -ENOENT) | |
721 | mlog_errno(err); | |
123a9643 | 722 | return err; |
ccd979bd MF |
723 | } |
724 | ||
53dc20b9 X |
725 | /* make sure both dirs have bhs |
726 | * get an extra ref on old_dir_bh if old==new */ | |
727 | if (!parent_fe_bh) { | |
728 | if (old_dir_bh) { | |
729 | parent_fe_bh = old_dir_bh; | |
730 | get_bh(parent_fe_bh); | |
731 | } else { | |
732 | mlog(ML_ERROR, "%s: no old_dir_bh!\n", osb->uuid_str); | |
733 | err = -EIO; | |
734 | goto out; | |
735 | } | |
736 | } | |
737 | ||
0f62de2c TY |
738 | if (!dir->i_nlink) { |
739 | err = -ENOENT; | |
123a9643 | 740 | goto out; |
0f62de2c TY |
741 | } |
742 | ||
53dc20b9 | 743 | err = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
0e048316 X |
744 | old_dentry->d_name.len, &old_de_ino); |
745 | if (err) { | |
746 | err = -ENOENT; | |
747 | goto out; | |
748 | } | |
749 | ||
750 | /* | |
751 | * Check whether another node removed the source inode while we | |
752 | * were in the vfs. | |
753 | */ | |
754 | if (old_de_ino != OCFS2_I(inode)->ip_blkno) { | |
755 | err = -ENOENT; | |
756 | goto out; | |
757 | } | |
758 | ||
ccd979bd MF |
759 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
760 | dentry->d_name.len); | |
761 | if (err) | |
123a9643 | 762 | goto out; |
ccd979bd MF |
763 | |
764 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
765 | dentry->d_name.name, | |
4a12ca3a | 766 | dentry->d_name.len, &lookup); |
ccd979bd MF |
767 | if (err < 0) { |
768 | mlog_errno(err); | |
123a9643 | 769 | goto out; |
ccd979bd MF |
770 | } |
771 | ||
e63aecb6 | 772 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
773 | if (err < 0) { |
774 | if (err != -ENOENT) | |
775 | mlog_errno(err); | |
123a9643 | 776 | goto out; |
ccd979bd MF |
777 | } |
778 | ||
779 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
198a1ca3 | 780 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
ccd979bd | 781 | err = -EMLINK; |
123a9643 | 782 | goto out_unlock_inode; |
ccd979bd MF |
783 | } |
784 | ||
a90714c1 | 785 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
786 | if (IS_ERR(handle)) { |
787 | err = PTR_ERR(handle); | |
788 | handle = NULL; | |
789 | mlog_errno(err); | |
123a9643 | 790 | goto out_unlock_inode; |
ccd979bd MF |
791 | } |
792 | ||
547ba7c8 JB |
793 | /* Starting to change things, restart is no longer possible. */ |
794 | ocfs2_block_signals(&oldset); | |
795 | ||
0cf2f763 | 796 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 797 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
798 | if (err < 0) { |
799 | mlog_errno(err); | |
123a9643 | 800 | goto out_commit; |
ccd979bd MF |
801 | } |
802 | ||
d8c76e6f | 803 | inc_nlink(inode); |
078cd827 | 804 | inode->i_ctime = current_time(inode); |
198a1ca3 | 805 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
806 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
807 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
ec20cec7 | 808 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd MF |
809 | |
810 | err = ocfs2_add_entry(handle, dentry, inode, | |
811 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 812 | parent_fe_bh, &lookup); |
ccd979bd | 813 | if (err) { |
198a1ca3 | 814 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 815 | drop_nlink(inode); |
ccd979bd | 816 | mlog_errno(err); |
123a9643 | 817 | goto out_commit; |
ccd979bd MF |
818 | } |
819 | ||
0027dd5b | 820 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
821 | if (err) { |
822 | mlog_errno(err); | |
123a9643 | 823 | goto out_commit; |
379dfe9d MF |
824 | } |
825 | ||
7de9c6ee | 826 | ihold(inode); |
ccd979bd | 827 | d_instantiate(dentry, inode); |
123a9643 MF |
828 | |
829 | out_commit: | |
02dc1af4 | 830 | ocfs2_commit_trans(osb, handle); |
547ba7c8 | 831 | ocfs2_unblock_signals(&oldset); |
123a9643 | 832 | out_unlock_inode: |
e63aecb6 | 833 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
834 | |
835 | out: | |
53dc20b9 | 836 | ocfs2_double_unlock(old_dir, dir); |
123a9643 | 837 | |
a81cb88b MF |
838 | brelse(fe_bh); |
839 | brelse(parent_fe_bh); | |
53dc20b9 | 840 | brelse(old_dir_bh); |
ccd979bd | 841 | |
4a12ca3a MF |
842 | ocfs2_free_dir_lookup_result(&lookup); |
843 | ||
c1e8d35e TM |
844 | if (err) |
845 | mlog_errno(err); | |
ccd979bd MF |
846 | |
847 | return err; | |
848 | } | |
849 | ||
379dfe9d MF |
850 | /* |
851 | * Takes and drops an exclusive lock on the given dentry. This will | |
852 | * force other nodes to drop it. | |
853 | */ | |
854 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
855 | { | |
856 | int ret; | |
857 | ||
858 | ret = ocfs2_dentry_lock(dentry, 1); | |
859 | if (ret) | |
860 | mlog_errno(ret); | |
861 | else | |
862 | ocfs2_dentry_unlock(dentry, 1); | |
863 | ||
864 | return ret; | |
865 | } | |
866 | ||
b5a8bb71 | 867 | static inline int ocfs2_inode_is_unlinkable(struct inode *inode) |
17ff7856 MF |
868 | { |
869 | if (S_ISDIR(inode->i_mode)) { | |
870 | if (inode->i_nlink == 2) | |
871 | return 1; | |
872 | return 0; | |
873 | } | |
874 | ||
875 | if (inode->i_nlink == 1) | |
876 | return 1; | |
877 | return 0; | |
878 | } | |
879 | ||
ccd979bd MF |
880 | static int ocfs2_unlink(struct inode *dir, |
881 | struct dentry *dentry) | |
882 | { | |
883 | int status; | |
30a4f5e8 | 884 | int child_locked = 0; |
b5a8bb71 | 885 | bool is_unlinkable = false; |
2b0143b5 | 886 | struct inode *inode = d_inode(dentry); |
5098c27b | 887 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
888 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
889 | u64 blkno; | |
890 | struct ocfs2_dinode *fe = NULL; | |
891 | struct buffer_head *fe_bh = NULL; | |
892 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 893 | handle_t *handle = NULL; |
ccd979bd | 894 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
895 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
896 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd | 897 | |
8990e44a TM |
898 | trace_ocfs2_unlink(dir, dentry, dentry->d_name.len, |
899 | dentry->d_name.name, | |
900 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
901 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 902 | |
9c89fe0a JK |
903 | status = dquot_initialize(dir); |
904 | if (status) { | |
905 | mlog_errno(status); | |
906 | return status; | |
907 | } | |
907f4554 | 908 | |
2b0143b5 | 909 | BUG_ON(d_inode(dentry->d_parent) != dir); |
ccd979bd | 910 | |
8990e44a | 911 | if (inode == osb->root_inode) |
30a4f5e8 | 912 | return -EPERM; |
ccd979bd | 913 | |
cb25797d JK |
914 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
915 | OI_LS_PARENT); | |
ccd979bd MF |
916 | if (status < 0) { |
917 | if (status != -ENOENT) | |
918 | mlog_errno(status); | |
30a4f5e8 | 919 | return status; |
ccd979bd MF |
920 | } |
921 | ||
922 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
923 | dentry->d_name.len, &blkno, dir, |
924 | &lookup); | |
ccd979bd MF |
925 | if (status < 0) { |
926 | if (status != -ENOENT) | |
927 | mlog_errno(status); | |
928 | goto leave; | |
929 | } | |
930 | ||
931 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
932 | status = -ENOENT; | |
933 | ||
8990e44a TM |
934 | trace_ocfs2_unlink_noent( |
935 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
936 | (unsigned long long)blkno, | |
937 | OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
938 | goto leave; |
939 | } | |
940 | ||
e63aecb6 | 941 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
942 | if (status < 0) { |
943 | if (status != -ENOENT) | |
944 | mlog_errno(status); | |
945 | goto leave; | |
946 | } | |
30a4f5e8 | 947 | child_locked = 1; |
ccd979bd MF |
948 | |
949 | if (S_ISDIR(inode->i_mode)) { | |
b80b549c | 950 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
ccd979bd MF |
951 | status = -ENOTEMPTY; |
952 | goto leave; | |
953 | } | |
954 | } | |
955 | ||
379dfe9d | 956 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 957 | if (status < 0) { |
34d024f8 | 958 | /* This remote delete should succeed under all normal |
ccd979bd MF |
959 | * circumstances. */ |
960 | mlog_errno(status); | |
961 | goto leave; | |
962 | } | |
963 | ||
b5a8bb71 | 964 | if (ocfs2_inode_is_unlinkable(inode)) { |
19bd341f TM |
965 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
966 | OCFS2_I(inode)->ip_blkno, | |
06ee5c75 JQ |
967 | orphan_name, &orphan_insert, |
968 | false); | |
ccd979bd MF |
969 | if (status < 0) { |
970 | mlog_errno(status); | |
971 | goto leave; | |
972 | } | |
b5a8bb71 | 973 | is_unlinkable = true; |
ccd979bd MF |
974 | } |
975 | ||
a90714c1 | 976 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
977 | if (IS_ERR(handle)) { |
978 | status = PTR_ERR(handle); | |
979 | handle = NULL; | |
980 | mlog_errno(status); | |
981 | goto leave; | |
982 | } | |
983 | ||
0cf2f763 | 984 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 985 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
986 | if (status < 0) { |
987 | mlog_errno(status); | |
988 | goto leave; | |
989 | } | |
990 | ||
991 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
992 | ||
ccd979bd | 993 | /* delete the name from the parent dir */ |
4a12ca3a | 994 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
995 | if (status < 0) { |
996 | mlog_errno(status); | |
997 | goto leave; | |
998 | } | |
999 | ||
17ff7856 MF |
1000 | if (S_ISDIR(inode->i_mode)) |
1001 | drop_nlink(inode); | |
1002 | drop_nlink(inode); | |
198a1ca3 | 1003 | ocfs2_set_links_count(fe, inode->i_nlink); |
ec20cec7 | 1004 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd | 1005 | |
078cd827 | 1006 | dir->i_ctime = dir->i_mtime = current_time(dir); |
592282cf | 1007 | if (S_ISDIR(inode->i_mode)) |
17ff7856 | 1008 | drop_nlink(dir); |
592282cf MF |
1009 | |
1010 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
1011 | if (status < 0) { | |
1012 | mlog_errno(status); | |
1013 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 1014 | inc_nlink(dir); |
b5a8bb71 YL |
1015 | goto leave; |
1016 | } | |
1017 | ||
1018 | if (is_unlinkable) { | |
1019 | status = ocfs2_orphan_add(osb, handle, inode, fe_bh, | |
06ee5c75 | 1020 | orphan_name, &orphan_insert, orphan_dir, false); |
b5a8bb71 YL |
1021 | if (status < 0) |
1022 | mlog_errno(status); | |
ccd979bd MF |
1023 | } |
1024 | ||
1025 | leave: | |
ccd979bd | 1026 | if (handle) |
02dc1af4 | 1027 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1028 | |
5098c27b MF |
1029 | if (orphan_dir) { |
1030 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1031 | ocfs2_inode_unlock(orphan_dir, 1); |
5955102c | 1032 | inode_unlock(orphan_dir); |
5098c27b MF |
1033 | iput(orphan_dir); |
1034 | } | |
1035 | ||
3cb2ec43 JQ |
1036 | if (child_locked) |
1037 | ocfs2_inode_unlock(inode, 1); | |
1038 | ||
1039 | ocfs2_inode_unlock(dir, 1); | |
1040 | ||
a81cb88b | 1041 | brelse(fe_bh); |
a81cb88b | 1042 | brelse(parent_node_bh); |
4a12ca3a MF |
1043 | |
1044 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1045 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd | 1046 | |
f5b25855 | 1047 | if (status && (status != -ENOTEMPTY) && (status != -ENOENT)) |
c1e8d35e | 1048 | mlog_errno(status); |
ccd979bd MF |
1049 | |
1050 | return status; | |
1051 | } | |
1052 | ||
f7a14f32 YJ |
1053 | static int ocfs2_check_if_ancestor(struct ocfs2_super *osb, |
1054 | u64 src_inode_no, u64 dest_inode_no) | |
1055 | { | |
1056 | int ret = 0, i = 0; | |
1057 | u64 parent_inode_no = 0; | |
1058 | u64 child_inode_no = src_inode_no; | |
1059 | struct inode *child_inode; | |
1060 | ||
1061 | #define MAX_LOOKUP_TIMES 32 | |
1062 | while (1) { | |
1063 | child_inode = ocfs2_iget(osb, child_inode_no, 0, 0); | |
1064 | if (IS_ERR(child_inode)) { | |
1065 | ret = PTR_ERR(child_inode); | |
1066 | break; | |
1067 | } | |
1068 | ||
1069 | ret = ocfs2_inode_lock(child_inode, NULL, 0); | |
1070 | if (ret < 0) { | |
1071 | iput(child_inode); | |
1072 | if (ret != -ENOENT) | |
1073 | mlog_errno(ret); | |
1074 | break; | |
1075 | } | |
1076 | ||
1077 | ret = ocfs2_lookup_ino_from_name(child_inode, "..", 2, | |
1078 | &parent_inode_no); | |
1079 | ocfs2_inode_unlock(child_inode, 0); | |
1080 | iput(child_inode); | |
1081 | if (ret < 0) { | |
1082 | ret = -ENOENT; | |
1083 | break; | |
1084 | } | |
1085 | ||
1086 | if (parent_inode_no == dest_inode_no) { | |
1087 | ret = 1; | |
1088 | break; | |
1089 | } | |
1090 | ||
1091 | if (parent_inode_no == osb->root_inode->i_ino) { | |
1092 | ret = 0; | |
1093 | break; | |
1094 | } | |
1095 | ||
1096 | child_inode_no = parent_inode_no; | |
1097 | ||
1098 | if (++i >= MAX_LOOKUP_TIMES) { | |
1099 | mlog(ML_NOTICE, "max lookup times reached, filesystem " | |
1100 | "may have nested directories, " | |
1101 | "src inode: %llu, dest inode: %llu.\n", | |
1102 | (unsigned long long)src_inode_no, | |
1103 | (unsigned long long)dest_inode_no); | |
1104 | ret = 0; | |
1105 | break; | |
1106 | } | |
1107 | } | |
1108 | ||
1109 | return ret; | |
1110 | } | |
1111 | ||
ccd979bd | 1112 | /* |
53dc20b9 | 1113 | * The only place this should be used is rename and link! |
ccd979bd MF |
1114 | * if they have the same id, then the 1st one is the only one locked. |
1115 | */ | |
1116 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
1117 | struct buffer_head **bh1, |
1118 | struct inode *inode1, | |
1119 | struct buffer_head **bh2, | |
53dc20b9 X |
1120 | struct inode *inode2, |
1121 | int rename) | |
ccd979bd MF |
1122 | { |
1123 | int status; | |
f7a14f32 | 1124 | int inode1_is_ancestor, inode2_is_ancestor; |
ccd979bd MF |
1125 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); |
1126 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
ccd979bd | 1127 | |
8990e44a TM |
1128 | trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno, |
1129 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 1130 | |
ccd979bd MF |
1131 | if (*bh1) |
1132 | *bh1 = NULL; | |
1133 | if (*bh2) | |
1134 | *bh2 = NULL; | |
1135 | ||
f7a14f32 YJ |
1136 | /* we always want to lock the one with the lower lockid first. |
1137 | * and if they are nested, we lock ancestor first */ | |
ccd979bd | 1138 | if (oi1->ip_blkno != oi2->ip_blkno) { |
f7a14f32 YJ |
1139 | inode1_is_ancestor = ocfs2_check_if_ancestor(osb, oi2->ip_blkno, |
1140 | oi1->ip_blkno); | |
1141 | if (inode1_is_ancestor < 0) { | |
1142 | status = inode1_is_ancestor; | |
1143 | goto bail; | |
1144 | } | |
1145 | ||
1146 | inode2_is_ancestor = ocfs2_check_if_ancestor(osb, oi1->ip_blkno, | |
1147 | oi2->ip_blkno); | |
1148 | if (inode2_is_ancestor < 0) { | |
1149 | status = inode2_is_ancestor; | |
1150 | goto bail; | |
1151 | } | |
1152 | ||
1153 | if ((inode1_is_ancestor == 1) || | |
1154 | (oi1->ip_blkno < oi2->ip_blkno && | |
1155 | inode2_is_ancestor == 0)) { | |
ccd979bd | 1156 | /* switch id1 and id2 around */ |
ab1ba021 FF |
1157 | swap(bh2, bh1); |
1158 | swap(inode2, inode1); | |
ccd979bd MF |
1159 | } |
1160 | /* lock id2 */ | |
cb25797d | 1161 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
53dc20b9 | 1162 | rename == 1 ? OI_LS_RENAME1 : OI_LS_PARENT); |
ccd979bd MF |
1163 | if (status < 0) { |
1164 | if (status != -ENOENT) | |
1165 | mlog_errno(status); | |
1166 | goto bail; | |
1167 | } | |
1168 | } | |
8d5596c6 | 1169 | |
ccd979bd | 1170 | /* lock id1 */ |
53dc20b9 X |
1171 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, |
1172 | rename == 1 ? OI_LS_RENAME2 : OI_LS_PARENT); | |
ccd979bd | 1173 | if (status < 0) { |
8d5596c6 MF |
1174 | /* |
1175 | * An error return must mean that no cluster locks | |
1176 | * were held on function exit. | |
1177 | */ | |
1e6d9153 | 1178 | if (oi1->ip_blkno != oi2->ip_blkno) { |
e63aecb6 | 1179 | ocfs2_inode_unlock(inode2, 1); |
1e6d9153 TM |
1180 | brelse(*bh2); |
1181 | *bh2 = NULL; | |
1182 | } | |
8d5596c6 | 1183 | |
ccd979bd MF |
1184 | if (status != -ENOENT) |
1185 | mlog_errno(status); | |
ccd979bd | 1186 | } |
8d5596c6 | 1187 | |
8990e44a | 1188 | trace_ocfs2_double_lock_end( |
d324cd4c | 1189 | (unsigned long long)oi1->ip_blkno, |
1190 | (unsigned long long)oi2->ip_blkno); | |
8990e44a | 1191 | |
ccd979bd | 1192 | bail: |
c1e8d35e TM |
1193 | if (status) |
1194 | mlog_errno(status); | |
ccd979bd MF |
1195 | return status; |
1196 | } | |
1197 | ||
8d5596c6 MF |
1198 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
1199 | { | |
e63aecb6 | 1200 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
1201 | |
1202 | if (inode1 != inode2) | |
e63aecb6 | 1203 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1204 | } |
1205 | ||
ccd979bd MF |
1206 | static int ocfs2_rename(struct inode *old_dir, |
1207 | struct dentry *old_dentry, | |
1208 | struct inode *new_dir, | |
1cd66c93 MS |
1209 | struct dentry *new_dentry, |
1210 | unsigned int flags) | |
ccd979bd | 1211 | { |
4a12ca3a MF |
1212 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1213 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
2b0143b5 DH |
1214 | struct inode *old_inode = d_inode(old_dentry); |
1215 | struct inode *new_inode = d_inode(new_dentry); | |
5098c27b | 1216 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1217 | struct ocfs2_dinode *newfe = NULL; |
1218 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
ccd979bd | 1219 | struct buffer_head *newfe_bh = NULL; |
592282cf | 1220 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd | 1221 | struct ocfs2_super *osb = NULL; |
5b6a3a2b | 1222 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1223 | handle_t *handle = NULL; |
ccd979bd MF |
1224 | struct buffer_head *old_dir_bh = NULL; |
1225 | struct buffer_head *new_dir_bh = NULL; | |
847c9db5 | 1226 | u32 old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1227 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1228 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1229 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1230 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1231 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1232 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
5fb1beb0 | 1233 | bool should_add_orphan = false; |
ccd979bd | 1234 | |
1cd66c93 MS |
1235 | if (flags) |
1236 | return -EINVAL; | |
1237 | ||
ccd979bd MF |
1238 | /* At some point it might be nice to break this function up a |
1239 | * bit. */ | |
1240 | ||
8990e44a TM |
1241 | trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry, |
1242 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1243 | new_dentry->d_name.len, new_dentry->d_name.name); | |
ccd979bd | 1244 | |
9c89fe0a JK |
1245 | status = dquot_initialize(old_dir); |
1246 | if (status) { | |
1247 | mlog_errno(status); | |
1248 | goto bail; | |
1249 | } | |
1250 | status = dquot_initialize(new_dir); | |
1251 | if (status) { | |
1252 | mlog_errno(status); | |
1253 | goto bail; | |
1254 | } | |
907f4554 | 1255 | |
ccd979bd MF |
1256 | osb = OCFS2_SB(old_dir->i_sb); |
1257 | ||
1258 | if (new_inode) { | |
1259 | if (!igrab(new_inode)) | |
1260 | BUG(); | |
1261 | } | |
1262 | ||
1b3c3714 | 1263 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1264 | * a/b/c |
1265 | * a/d | |
1266 | * a,b,c, and d are all directories. | |
1267 | * | |
1268 | * from cwd of 'a' on both nodes: | |
1269 | * node1: mv b/c d | |
1270 | * node2: mv d b/c | |
1271 | * | |
1272 | * And that's why, just like the VFS, we need a file system | |
1273 | * rename lock. */ | |
5dabd695 | 1274 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1275 | status = ocfs2_rename_lock(osb); |
1276 | if (status < 0) { | |
1277 | mlog_errno(status); | |
1278 | goto bail; | |
1279 | } | |
1280 | rename_lock = 1; | |
f7a14f32 YJ |
1281 | |
1282 | /* here we cannot guarantee the inodes haven't just been | |
1283 | * changed, so check if they are nested again */ | |
1284 | status = ocfs2_check_if_ancestor(osb, new_dir->i_ino, | |
1285 | old_inode->i_ino); | |
1286 | if (status < 0) { | |
1287 | mlog_errno(status); | |
1288 | goto bail; | |
1289 | } else if (status == 1) { | |
1290 | status = -EPERM; | |
1291 | trace_ocfs2_rename_not_permitted( | |
1292 | (unsigned long long)old_inode->i_ino, | |
1293 | (unsigned long long)new_dir->i_ino); | |
1294 | goto bail; | |
1295 | } | |
ccd979bd MF |
1296 | } |
1297 | ||
ccd979bd | 1298 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 | 1299 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
53dc20b9 | 1300 | &new_dir_bh, new_dir, 1); |
ccd979bd MF |
1301 | if (status < 0) { |
1302 | mlog_errno(status); | |
1303 | goto bail; | |
1304 | } | |
8d5596c6 | 1305 | parents_locked = 1; |
ccd979bd | 1306 | |
928dda1f YJ |
1307 | if (!new_dir->i_nlink) { |
1308 | status = -EACCES; | |
1309 | goto bail; | |
1310 | } | |
1311 | ||
ccd979bd MF |
1312 | /* make sure both dirs have bhs |
1313 | * get an extra ref on old_dir_bh if old==new */ | |
1314 | if (!new_dir_bh) { | |
1315 | if (old_dir_bh) { | |
1316 | new_dir_bh = old_dir_bh; | |
1317 | get_bh(new_dir_bh); | |
1318 | } else { | |
1319 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1320 | status = -EIO; | |
1321 | goto bail; | |
1322 | } | |
1323 | } | |
1324 | ||
379dfe9d | 1325 | /* |
592282cf | 1326 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1327 | * also ensures that the downconvert thread on other nodes |
1328 | * won't have to concurrently downconvert the inode and the | |
1329 | * dentry locks. | |
379dfe9d | 1330 | */ |
cb25797d JK |
1331 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
1332 | OI_LS_PARENT); | |
379dfe9d MF |
1333 | if (status < 0) { |
1334 | if (status != -ENOENT) | |
ccd979bd | 1335 | mlog_errno(status); |
379dfe9d MF |
1336 | goto bail; |
1337 | } | |
8d5596c6 | 1338 | old_child_locked = 1; |
ccd979bd | 1339 | |
379dfe9d MF |
1340 | status = ocfs2_remote_dentry_delete(old_dentry); |
1341 | if (status < 0) { | |
1342 | mlog_errno(status); | |
1343 | goto bail; | |
1344 | } | |
1345 | ||
1346 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1347 | u64 old_inode_parent; |
1348 | ||
4a12ca3a | 1349 | update_dot_dot = 1; |
38760e24 | 1350 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1351 | old_inode, |
1352 | &old_inode_dot_dot_res); | |
38760e24 MF |
1353 | if (status) { |
1354 | status = -EIO; | |
ccd979bd | 1355 | goto bail; |
38760e24 | 1356 | } |
ccd979bd | 1357 | |
38760e24 MF |
1358 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1359 | status = -EIO; | |
ccd979bd | 1360 | goto bail; |
38760e24 MF |
1361 | } |
1362 | ||
1363 | if (!new_inode && new_dir != old_dir && | |
198a1ca3 | 1364 | new_dir->i_nlink >= ocfs2_link_max(osb)) { |
38760e24 | 1365 | status = -EMLINK; |
ccd979bd | 1366 | goto bail; |
38760e24 | 1367 | } |
ccd979bd MF |
1368 | } |
1369 | ||
5b6a3a2b MF |
1370 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1371 | old_dentry->d_name.len, | |
1372 | &old_de_ino); | |
1373 | if (status) { | |
1374 | status = -ENOENT; | |
ccd979bd | 1375 | goto bail; |
5b6a3a2b | 1376 | } |
ccd979bd MF |
1377 | |
1378 | /* | |
1379 | * Check for inode number is _not_ due to possible IO errors. | |
1380 | * We might rmdir the source, keep it as pwd of some process | |
1381 | * and merrily kill the link to whatever was created under the | |
1382 | * same name. Goodbye sticky bit ;-< | |
1383 | */ | |
5b6a3a2b MF |
1384 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1385 | status = -ENOENT; | |
ccd979bd | 1386 | goto bail; |
5b6a3a2b | 1387 | } |
ccd979bd MF |
1388 | |
1389 | /* check if the target already exists (in which case we need | |
1390 | * to delete it */ | |
1391 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1392 | new_dentry->d_name.len, | |
4a12ca3a MF |
1393 | &newfe_blkno, new_dir, |
1394 | &target_lookup_res); | |
ccd979bd MF |
1395 | /* The only error we allow here is -ENOENT because the new |
1396 | * file not existing is perfectly valid. */ | |
1397 | if ((status < 0) && (status != -ENOENT)) { | |
1398 | /* If we cannot find the file specified we should just */ | |
1399 | /* return the error... */ | |
1400 | mlog_errno(status); | |
1401 | goto bail; | |
1402 | } | |
4a12ca3a MF |
1403 | if (status == 0) |
1404 | target_exists = 1; | |
ccd979bd | 1405 | |
4a12ca3a | 1406 | if (!target_exists && new_inode) { |
e325a88f SE |
1407 | /* |
1408 | * Target was unlinked by another node while we were | |
1409 | * waiting to get to ocfs2_rename(). There isn't | |
1410 | * anything we can do here to help the situation, so | |
1411 | * bubble up the appropriate error. | |
1412 | */ | |
1413 | status = -ENOENT; | |
1414 | goto bail; | |
1415 | } | |
ccd979bd MF |
1416 | |
1417 | /* In case we need to overwrite an existing file, we blow it | |
1418 | * away first */ | |
4a12ca3a | 1419 | if (target_exists) { |
ccd979bd MF |
1420 | /* VFS didn't think there existed an inode here, but |
1421 | * someone else in the cluster must have raced our | |
1422 | * rename to create one. Today we error cleanly, in | |
1423 | * the future we should consider calling iget to build | |
1424 | * a new struct inode for this entry. */ | |
1425 | if (!new_inode) { | |
1426 | status = -EACCES; | |
1427 | ||
8990e44a TM |
1428 | trace_ocfs2_rename_target_exists(new_dentry->d_name.len, |
1429 | new_dentry->d_name.name); | |
ccd979bd MF |
1430 | goto bail; |
1431 | } | |
1432 | ||
1433 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1434 | status = -EACCES; | |
1435 | ||
8990e44a | 1436 | trace_ocfs2_rename_disagree( |
b0697053 MF |
1437 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, |
1438 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1439 | OCFS2_I(new_inode)->ip_flags); |
1440 | goto bail; | |
1441 | } | |
1442 | ||
e63aecb6 | 1443 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1444 | if (status < 0) { |
1445 | if (status != -ENOENT) | |
1446 | mlog_errno(status); | |
1447 | goto bail; | |
1448 | } | |
8d5596c6 | 1449 | new_child_locked = 1; |
ccd979bd | 1450 | |
379dfe9d | 1451 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1452 | if (status < 0) { |
1453 | mlog_errno(status); | |
1454 | goto bail; | |
1455 | } | |
1456 | ||
1457 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1458 | ||
8990e44a | 1459 | trace_ocfs2_rename_over_existing( |
b0697053 | 1460 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1461 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1462 | ||
1463 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1464 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
19bd341f | 1465 | OCFS2_I(new_inode)->ip_blkno, |
06ee5c75 JQ |
1466 | orphan_name, &orphan_insert, |
1467 | false); | |
ccd979bd MF |
1468 | if (status < 0) { |
1469 | mlog_errno(status); | |
1470 | goto bail; | |
1471 | } | |
5fb1beb0 | 1472 | should_add_orphan = true; |
ccd979bd MF |
1473 | } |
1474 | } else { | |
2b0143b5 | 1475 | BUG_ON(d_inode(new_dentry->d_parent) != new_dir); |
ccd979bd MF |
1476 | |
1477 | status = ocfs2_check_dir_for_entry(new_dir, | |
1478 | new_dentry->d_name.name, | |
1479 | new_dentry->d_name.len); | |
1480 | if (status) | |
1481 | goto bail; | |
1482 | ||
1483 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1484 | new_dentry->d_name.name, | |
1485 | new_dentry->d_name.len, | |
4a12ca3a | 1486 | &target_insert); |
ccd979bd MF |
1487 | if (status < 0) { |
1488 | mlog_errno(status); | |
1489 | goto bail; | |
1490 | } | |
1491 | } | |
1492 | ||
a90714c1 | 1493 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1494 | if (IS_ERR(handle)) { |
1495 | status = PTR_ERR(handle); | |
1496 | handle = NULL; | |
1497 | mlog_errno(status); | |
1498 | goto bail; | |
1499 | } | |
1500 | ||
4a12ca3a | 1501 | if (target_exists) { |
ccd979bd | 1502 | if (S_ISDIR(new_inode->i_mode)) { |
b80b549c MF |
1503 | if (new_inode->i_nlink != 2 || |
1504 | !ocfs2_empty_dir(new_inode)) { | |
ccd979bd MF |
1505 | status = -ENOTEMPTY; |
1506 | goto bail; | |
1507 | } | |
1508 | } | |
0cf2f763 JB |
1509 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
1510 | newfe_bh, | |
13723d00 | 1511 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1512 | if (status < 0) { |
1513 | mlog_errno(status); | |
1514 | goto bail; | |
1515 | } | |
1516 | ||
ccd979bd | 1517 | /* change the dirent to point to the correct inode */ |
4a12ca3a MF |
1518 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1519 | old_inode); | |
ccd979bd MF |
1520 | if (status < 0) { |
1521 | mlog_errno(status); | |
1522 | goto bail; | |
1523 | } | |
cc56c33e | 1524 | inode_inc_iversion(new_dir); |
ccd979bd MF |
1525 | |
1526 | if (S_ISDIR(new_inode->i_mode)) | |
198a1ca3 | 1527 | ocfs2_set_links_count(newfe, 0); |
ccd979bd | 1528 | else |
198a1ca3 | 1529 | ocfs2_add_links_count(newfe, -1); |
ec20cec7 | 1530 | ocfs2_journal_dirty(handle, newfe_bh); |
5fb1beb0 | 1531 | if (should_add_orphan) { |
1532 | status = ocfs2_orphan_add(osb, handle, new_inode, | |
1533 | newfe_bh, orphan_name, | |
06ee5c75 | 1534 | &orphan_insert, orphan_dir, false); |
5fb1beb0 | 1535 | if (status < 0) { |
1536 | mlog_errno(status); | |
1537 | goto bail; | |
1538 | } | |
1539 | } | |
ccd979bd MF |
1540 | } else { |
1541 | /* if the name was not found in new_dir, add it now */ | |
1542 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1543 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1544 | new_dir_bh, &target_insert); |
ccd979bd MF |
1545 | } |
1546 | ||
078cd827 | 1547 | old_inode->i_ctime = current_time(old_inode); |
ccd979bd | 1548 | mark_inode_dirty(old_inode); |
480214d7 | 1549 | |
0cf2f763 JB |
1550 | status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), |
1551 | old_inode_bh, | |
13723d00 | 1552 | OCFS2_JOURNAL_ACCESS_WRITE); |
480214d7 SM |
1553 | if (status >= 0) { |
1554 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1555 | ||
1556 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); | |
1557 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); | |
ec20cec7 | 1558 | ocfs2_journal_dirty(handle, old_inode_bh); |
480214d7 SM |
1559 | } else |
1560 | mlog_errno(status); | |
ccd979bd | 1561 | |
5b6a3a2b MF |
1562 | /* |
1563 | * Now that the name has been added to new_dir, remove the old name. | |
1564 | * | |
1565 | * We don't keep any directory entry context around until now | |
1566 | * because the insert might have changed the type of directory | |
1567 | * we're dealing with. | |
1568 | */ | |
4a12ca3a MF |
1569 | status = ocfs2_find_entry(old_dentry->d_name.name, |
1570 | old_dentry->d_name.len, old_dir, | |
1571 | &old_entry_lookup); | |
807a7907 | 1572 | if (status) { |
1573 | if (!is_journal_aborted(osb->journal->j_journal)) { | |
1574 | ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " | |
1575 | "is not deleted.", | |
1576 | new_dentry->d_name.len, new_dentry->d_name.name, | |
1577 | old_dentry->d_name.len, old_dentry->d_name.name); | |
1578 | } | |
5b6a3a2b | 1579 | goto bail; |
807a7907 | 1580 | } |
5b6a3a2b | 1581 | |
4a12ca3a | 1582 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
ccd979bd MF |
1583 | if (status < 0) { |
1584 | mlog_errno(status); | |
807a7907 | 1585 | if (!is_journal_aborted(osb->journal->j_journal)) { |
1586 | ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " | |
1587 | "is not deleted.", | |
1588 | new_dentry->d_name.len, new_dentry->d_name.name, | |
1589 | old_dentry->d_name.len, old_dentry->d_name.name); | |
1590 | } | |
ccd979bd MF |
1591 | goto bail; |
1592 | } | |
1593 | ||
1594 | if (new_inode) { | |
6d6b77f1 | 1595 | drop_nlink(new_inode); |
078cd827 | 1596 | new_inode->i_ctime = current_time(new_inode); |
ccd979bd | 1597 | } |
078cd827 | 1598 | old_dir->i_ctime = old_dir->i_mtime = current_time(old_dir); |
4a12ca3a MF |
1599 | |
1600 | if (update_dot_dot) { | |
1601 | status = ocfs2_update_entry(old_inode, handle, | |
1602 | &old_inode_dot_dot_res, new_dir); | |
6d6b77f1 | 1603 | drop_nlink(old_dir); |
ccd979bd | 1604 | if (new_inode) { |
6d6b77f1 | 1605 | drop_nlink(new_inode); |
ccd979bd | 1606 | } else { |
d8c76e6f | 1607 | inc_nlink(new_dir); |
ccd979bd MF |
1608 | mark_inode_dirty(new_dir); |
1609 | } | |
1610 | } | |
1611 | mark_inode_dirty(old_dir); | |
592282cf MF |
1612 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1613 | if (new_inode) { | |
ccd979bd | 1614 | mark_inode_dirty(new_inode); |
592282cf MF |
1615 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1616 | } | |
ccd979bd | 1617 | |
592282cf MF |
1618 | if (old_dir != new_dir) { |
1619 | /* Keep the same times on both directories.*/ | |
1620 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; | |
1621 | ||
1622 | /* | |
1623 | * This will also pick up the i_nlink change from the | |
1624 | * block above. | |
1625 | */ | |
1626 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1627 | } | |
ccd979bd MF |
1628 | |
1629 | if (old_dir_nlink != old_dir->i_nlink) { | |
1630 | if (!old_dir_bh) { | |
1631 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1632 | "%llu from %d to %d but bh is NULL!\n", |
1633 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1634 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1635 | } else { |
1636 | struct ocfs2_dinode *fe; | |
0cf2f763 JB |
1637 | status = ocfs2_journal_access_di(handle, |
1638 | INODE_CACHE(old_dir), | |
1639 | old_dir_bh, | |
1640 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd | 1641 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
198a1ca3 | 1642 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
ec20cec7 | 1643 | ocfs2_journal_dirty(handle, old_dir_bh); |
ccd979bd MF |
1644 | } |
1645 | } | |
379dfe9d | 1646 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1647 | status = 0; |
1648 | bail: | |
ccd979bd | 1649 | if (handle) |
02dc1af4 | 1650 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1651 | |
5098c27b MF |
1652 | if (orphan_dir) { |
1653 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1654 | ocfs2_inode_unlock(orphan_dir, 1); |
5955102c | 1655 | inode_unlock(orphan_dir); |
5098c27b MF |
1656 | iput(orphan_dir); |
1657 | } | |
1658 | ||
3cb2ec43 JQ |
1659 | if (new_child_locked) |
1660 | ocfs2_inode_unlock(new_inode, 1); | |
1661 | ||
1662 | if (old_child_locked) | |
1663 | ocfs2_inode_unlock(old_inode, 1); | |
1664 | ||
1665 | if (parents_locked) | |
1666 | ocfs2_double_unlock(old_dir, new_dir); | |
1667 | ||
1668 | if (rename_lock) | |
1669 | ocfs2_rename_unlock(osb); | |
1670 | ||
ccd979bd MF |
1671 | if (new_inode) |
1672 | sync_mapping_buffers(old_inode->i_mapping); | |
1673 | ||
72865d92 | 1674 | iput(new_inode); |
4a12ca3a MF |
1675 | |
1676 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1677 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1678 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1679 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1680 | ocfs2_free_dir_lookup_result(&target_insert); | |
1681 | ||
a81cb88b MF |
1682 | brelse(newfe_bh); |
1683 | brelse(old_inode_bh); | |
1684 | brelse(old_dir_bh); | |
1685 | brelse(new_dir_bh); | |
ccd979bd | 1686 | |
c1e8d35e TM |
1687 | if (status) |
1688 | mlog_errno(status); | |
ccd979bd MF |
1689 | |
1690 | return status; | |
1691 | } | |
1692 | ||
1693 | /* | |
1694 | * we expect i_size = strlen(symname). Copy symname into the file | |
1695 | * data, including the null terminator. | |
1696 | */ | |
1697 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1698 | handle_t *handle, |
ccd979bd MF |
1699 | struct inode *inode, |
1700 | const char *symname) | |
1701 | { | |
1702 | struct buffer_head **bhs = NULL; | |
1703 | const char *c; | |
1704 | struct super_block *sb = osb->sb; | |
4f902c37 | 1705 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1706 | int virtual, blocks, status, i, bytes_left; |
1707 | ||
1708 | bytes_left = i_size_read(inode) + 1; | |
1709 | /* we can't trust i_blocks because we're actually going to | |
1710 | * write i_size + 1 bytes. */ | |
1711 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1712 | ||
8990e44a TM |
1713 | trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks, |
1714 | i_size_read(inode), blocks); | |
ccd979bd MF |
1715 | |
1716 | /* Sanity check -- make sure we're going to fit. */ | |
1717 | if (bytes_left > | |
1718 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1719 | status = -EIO; | |
1720 | mlog_errno(status); | |
1721 | goto bail; | |
1722 | } | |
1723 | ||
1724 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1725 | if (!bhs) { | |
1726 | status = -ENOMEM; | |
1727 | mlog_errno(status); | |
1728 | goto bail; | |
1729 | } | |
1730 | ||
49cb8d2d MF |
1731 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1732 | NULL); | |
ccd979bd MF |
1733 | if (status < 0) { |
1734 | mlog_errno(status); | |
1735 | goto bail; | |
1736 | } | |
1737 | ||
1738 | /* links can never be larger than one cluster so we know this | |
1739 | * is all going to be contiguous, but do a sanity check | |
1740 | * anyway. */ | |
1741 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1742 | status = -EIO; | |
1743 | mlog_errno(status); | |
1744 | goto bail; | |
1745 | } | |
1746 | ||
1747 | virtual = 0; | |
1748 | while(bytes_left > 0) { | |
1749 | c = &symname[virtual * sb->s_blocksize]; | |
1750 | ||
1751 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1752 | if (!bhs[virtual]) { | |
1753 | status = -ENOMEM; | |
1754 | mlog_errno(status); | |
1755 | goto bail; | |
1756 | } | |
8cb471e8 JB |
1757 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
1758 | bhs[virtual]); | |
ccd979bd | 1759 | |
0cf2f763 JB |
1760 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
1761 | bhs[virtual], | |
ccd979bd MF |
1762 | OCFS2_JOURNAL_ACCESS_CREATE); |
1763 | if (status < 0) { | |
1764 | mlog_errno(status); | |
1765 | goto bail; | |
1766 | } | |
1767 | ||
1768 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1769 | ||
1770 | memcpy(bhs[virtual]->b_data, c, | |
1771 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1772 | bytes_left); | |
1773 | ||
ec20cec7 | 1774 | ocfs2_journal_dirty(handle, bhs[virtual]); |
ccd979bd MF |
1775 | |
1776 | virtual++; | |
1777 | p_blkno++; | |
1778 | bytes_left -= sb->s_blocksize; | |
1779 | } | |
1780 | ||
1781 | status = 0; | |
1782 | bail: | |
1783 | ||
1784 | if (bhs) { | |
1785 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1786 | brelse(bhs[i]); |
ccd979bd MF |
1787 | kfree(bhs); |
1788 | } | |
1789 | ||
c1e8d35e TM |
1790 | if (status) |
1791 | mlog_errno(status); | |
ccd979bd MF |
1792 | return status; |
1793 | } | |
1794 | ||
1795 | static int ocfs2_symlink(struct inode *dir, | |
1796 | struct dentry *dentry, | |
1797 | const char *symname) | |
1798 | { | |
1799 | int status, l, credits; | |
1800 | u64 newsize; | |
1801 | struct ocfs2_super *osb = NULL; | |
1802 | struct inode *inode = NULL; | |
1803 | struct super_block *sb; | |
1804 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1805 | struct buffer_head *parent_fe_bh = NULL; |
1806 | struct ocfs2_dinode *fe = NULL; | |
1807 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1808 | handle_t *handle = NULL; |
ccd979bd MF |
1809 | struct ocfs2_alloc_context *inode_ac = NULL; |
1810 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1811 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1812 | int want_clusters = 0; | |
1813 | int xattr_credits = 0; | |
1814 | struct ocfs2_security_xattr_info si = { | |
1815 | .enable = 1, | |
1816 | }; | |
a90714c1 | 1817 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1818 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
1819 | sigset_t oldset; |
1820 | int did_block_signals = 0; | |
595297a8 | 1821 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 1822 | |
8990e44a TM |
1823 | trace_ocfs2_symlink_begin(dir, dentry, symname, |
1824 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 1825 | |
9c89fe0a JK |
1826 | status = dquot_initialize(dir); |
1827 | if (status) { | |
1828 | mlog_errno(status); | |
1829 | goto bail; | |
1830 | } | |
907f4554 | 1831 | |
ccd979bd MF |
1832 | sb = dir->i_sb; |
1833 | osb = OCFS2_SB(sb); | |
1834 | ||
1835 | l = strlen(symname) + 1; | |
1836 | ||
1837 | credits = ocfs2_calc_symlink_credits(sb); | |
1838 | ||
ccd979bd | 1839 | /* lock the parent directory */ |
e63aecb6 | 1840 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1841 | if (status < 0) { |
1842 | if (status != -ENOENT) | |
1843 | mlog_errno(status); | |
6d8fc40e | 1844 | return status; |
ccd979bd MF |
1845 | } |
1846 | ||
1847 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
198a1ca3 | 1848 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
1849 | /* can't make a file in a deleted directory. */ |
1850 | status = -ENOENT; | |
1851 | goto bail; | |
1852 | } | |
1853 | ||
1854 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1855 | dentry->d_name.len); | |
1856 | if (status) | |
1857 | goto bail; | |
1858 | ||
1859 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1860 | dentry->d_name.name, | |
4a12ca3a | 1861 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1862 | if (status < 0) { |
1863 | mlog_errno(status); | |
1864 | goto bail; | |
1865 | } | |
1866 | ||
da5cbf2f | 1867 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1868 | if (status < 0) { |
1869 | if (status != -ENOSPC) | |
1870 | mlog_errno(status); | |
1871 | goto bail; | |
1872 | } | |
1873 | ||
f5d36202 | 1874 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
9c89fe0a JK |
1875 | if (IS_ERR(inode)) { |
1876 | status = PTR_ERR(inode); | |
1877 | inode = NULL; | |
f5d36202 TY |
1878 | mlog_errno(status); |
1879 | goto bail; | |
1880 | } | |
1881 | ||
534eaddd | 1882 | /* get security xattr */ |
2a7dba39 | 1883 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
1884 | if (status) { |
1885 | if (status == -EOPNOTSUPP) | |
1886 | si.enable = 0; | |
1887 | else { | |
1888 | mlog_errno(status); | |
1889 | goto bail; | |
1890 | } | |
1891 | } | |
1892 | ||
1893 | /* calculate meta data/clusters for setting security xattr */ | |
1894 | if (si.enable) { | |
1895 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1896 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1897 | if (status < 0) { |
534eaddd | 1898 | mlog_errno(status); |
ccd979bd MF |
1899 | goto bail; |
1900 | } | |
1901 | } | |
1902 | ||
534eaddd TY |
1903 | /* don't reserve bitmap space for fast symlinks. */ |
1904 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1905 | want_clusters += 1; | |
1906 | ||
1907 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1908 | if (status < 0) { | |
1909 | if (status != -ENOSPC) | |
1910 | mlog_errno(status); | |
1911 | goto bail; | |
1912 | } | |
1913 | ||
1914 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1915 | if (IS_ERR(handle)) { |
1916 | status = PTR_ERR(handle); | |
1917 | handle = NULL; | |
1918 | mlog_errno(status); | |
1919 | goto bail; | |
1920 | } | |
1921 | ||
547ba7c8 JB |
1922 | /* Starting to change things, restart is no longer possible. */ |
1923 | ocfs2_block_signals(&oldset); | |
1924 | did_block_signals = 1; | |
1925 | ||
63936dda CH |
1926 | status = dquot_alloc_inode(inode); |
1927 | if (status) | |
a90714c1 | 1928 | goto bail; |
a90714c1 JK |
1929 | did_quota_inode = 1; |
1930 | ||
8990e44a TM |
1931 | trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len, |
1932 | dentry->d_name.name, | |
1933 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
1934 | inode->i_mode); | |
19bd341f TM |
1935 | |
1936 | status = ocfs2_mknod_locked(osb, dir, inode, | |
f5d36202 TY |
1937 | 0, &new_fe_bh, parent_fe_bh, handle, |
1938 | inode_ac); | |
ccd979bd MF |
1939 | if (status < 0) { |
1940 | mlog_errno(status); | |
1941 | goto bail; | |
1942 | } | |
1943 | ||
1944 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1945 | inode->i_rdev = 0; | |
1946 | newsize = l - 1; | |
ea022dfb | 1947 | inode->i_op = &ocfs2_symlink_inode_operations; |
21fc61c7 | 1948 | inode_nohighmem(inode); |
ccd979bd | 1949 | if (l > ocfs2_fast_symlink_chars(sb)) { |
dcd0538f MF |
1950 | u32 offset = 0; |
1951 | ||
5dd4056d CH |
1952 | status = dquot_alloc_space_nodirty(inode, |
1953 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1954 | if (status) | |
a90714c1 | 1955 | goto bail; |
a90714c1 | 1956 | did_quota = 1; |
ea022dfb | 1957 | inode->i_mapping->a_ops = &ocfs2_aops; |
0eb8d47e TM |
1958 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1959 | new_fe_bh, | |
1960 | handle, data_ac, NULL, | |
1961 | NULL); | |
ccd979bd MF |
1962 | if (status < 0) { |
1963 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1964 | mlog(ML_ERROR, |
1965 | "Failed to extend file to %llu\n", | |
1966 | (unsigned long long)newsize); | |
ccd979bd MF |
1967 | mlog_errno(status); |
1968 | status = -ENOSPC; | |
1969 | } | |
1970 | goto bail; | |
1971 | } | |
1972 | i_size_write(inode, newsize); | |
8110b073 | 1973 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd | 1974 | } else { |
ea022dfb | 1975 | inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops; |
ccd979bd MF |
1976 | memcpy((char *) fe->id2.i_symlink, symname, l); |
1977 | i_size_write(inode, newsize); | |
1978 | inode->i_blocks = 0; | |
1979 | } | |
1980 | ||
1981 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1982 | if (status < 0) { | |
1983 | mlog_errno(status); | |
1984 | goto bail; | |
1985 | } | |
1986 | ||
1987 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
1988 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
1989 | symname); | |
1990 | if (status < 0) { | |
1991 | mlog_errno(status); | |
1992 | goto bail; | |
1993 | } | |
1994 | } | |
1995 | ||
534eaddd TY |
1996 | if (si.enable) { |
1997 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
1998 | xattr_ac, data_ac); | |
1999 | if (status < 0) { | |
2000 | mlog_errno(status); | |
2001 | goto bail; | |
2002 | } | |
2003 | } | |
2004 | ||
a9743fcd MF |
2005 | /* |
2006 | * Do this before adding the entry to the directory. We add | |
2007 | * also set d_op after success so that ->d_iput() will cleanup | |
2008 | * the dentry lock even if ocfs2_add_entry() fails below. | |
2009 | */ | |
2010 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); | |
2011 | if (status) { | |
ccd979bd MF |
2012 | mlog_errno(status); |
2013 | goto bail; | |
2014 | } | |
2015 | ||
595297a8 | 2016 | dl = dentry->d_fsdata; |
2017 | ||
a9743fcd MF |
2018 | status = ocfs2_add_entry(handle, dentry, inode, |
2019 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
2020 | &lookup); | |
2021 | if (status < 0) { | |
379dfe9d MF |
2022 | mlog_errno(status); |
2023 | goto bail; | |
2024 | } | |
2025 | ||
ccd979bd | 2026 | insert_inode_hash(inode); |
ccd979bd MF |
2027 | d_instantiate(dentry, inode); |
2028 | bail: | |
a90714c1 | 2029 | if (status < 0 && did_quota) |
5dd4056d | 2030 | dquot_free_space_nodirty(inode, |
a90714c1 JK |
2031 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
2032 | if (status < 0 && did_quota_inode) | |
63936dda | 2033 | dquot_free_inode(inode); |
ccd979bd | 2034 | if (handle) |
02dc1af4 | 2035 | ocfs2_commit_trans(osb, handle); |
6d8fc40e | 2036 | |
e63aecb6 | 2037 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
2038 | if (did_block_signals) |
2039 | ocfs2_unblock_signals(&oldset); | |
6d8fc40e | 2040 | |
a81cb88b MF |
2041 | brelse(new_fe_bh); |
2042 | brelse(parent_fe_bh); | |
534eaddd | 2043 | kfree(si.value); |
4a12ca3a | 2044 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
2045 | if (inode_ac) |
2046 | ocfs2_free_alloc_context(inode_ac); | |
2047 | if (data_ac) | |
2048 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
2049 | if (xattr_ac) |
2050 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 | 2051 | if ((status < 0) && inode) { |
595297a8 | 2052 | if (dl) |
2053 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
2054 | ||
ab41fdc8 | 2055 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
f5d36202 | 2056 | clear_nlink(inode); |
ccd979bd | 2057 | iput(inode); |
f5d36202 | 2058 | } |
ccd979bd | 2059 | |
c1e8d35e TM |
2060 | if (status) |
2061 | mlog_errno(status); | |
ccd979bd MF |
2062 | |
2063 | return status; | |
2064 | } | |
2065 | ||
ccd979bd MF |
2066 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
2067 | { | |
2068 | int status, namelen; | |
2069 | ||
b0697053 MF |
2070 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
2071 | (long long)blkno); | |
ccd979bd MF |
2072 | if (namelen <= 0) { |
2073 | if (namelen) | |
2074 | status = namelen; | |
2075 | else | |
2076 | status = -EINVAL; | |
2077 | mlog_errno(status); | |
2078 | goto bail; | |
2079 | } | |
2080 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
2081 | status = -EINVAL; | |
2082 | mlog_errno(status); | |
2083 | goto bail; | |
2084 | } | |
2085 | ||
8990e44a | 2086 | trace_ocfs2_blkno_stringify(blkno, name, namelen); |
ccd979bd MF |
2087 | |
2088 | status = 0; | |
2089 | bail: | |
c1e8d35e TM |
2090 | if (status < 0) |
2091 | mlog_errno(status); | |
ccd979bd MF |
2092 | return status; |
2093 | } | |
2094 | ||
dd43bcde MF |
2095 | static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb, |
2096 | struct inode **ret_orphan_dir, | |
2097 | struct buffer_head **ret_orphan_dir_bh) | |
ccd979bd | 2098 | { |
5098c27b | 2099 | struct inode *orphan_dir_inode; |
ccd979bd | 2100 | struct buffer_head *orphan_dir_bh = NULL; |
dd43bcde | 2101 | int ret = 0; |
ccd979bd MF |
2102 | |
2103 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2104 | ORPHAN_DIR_SYSTEM_INODE, | |
2105 | osb->slot_num); | |
2106 | if (!orphan_dir_inode) { | |
dd43bcde MF |
2107 | ret = -ENOENT; |
2108 | mlog_errno(ret); | |
2109 | return ret; | |
ccd979bd MF |
2110 | } |
2111 | ||
5955102c | 2112 | inode_lock(orphan_dir_inode); |
5098c27b | 2113 | |
dd43bcde MF |
2114 | ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2115 | if (ret < 0) { | |
5955102c | 2116 | inode_unlock(orphan_dir_inode); |
dd43bcde MF |
2117 | iput(orphan_dir_inode); |
2118 | ||
2119 | mlog_errno(ret); | |
2120 | return ret; | |
ccd979bd MF |
2121 | } |
2122 | ||
dd43bcde MF |
2123 | *ret_orphan_dir = orphan_dir_inode; |
2124 | *ret_orphan_dir_bh = orphan_dir_bh; | |
5098c27b | 2125 | |
dd43bcde MF |
2126 | return 0; |
2127 | } | |
2128 | ||
2129 | static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode, | |
2130 | struct buffer_head *orphan_dir_bh, | |
2131 | u64 blkno, | |
2132 | char *name, | |
06ee5c75 JQ |
2133 | struct ocfs2_dir_lookup_result *lookup, |
2134 | bool dio) | |
dd43bcde MF |
2135 | { |
2136 | int ret; | |
2137 | struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb); | |
06ee5c75 JQ |
2138 | int namelen = dio ? |
2139 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2140 | OCFS2_ORPHAN_NAMELEN; | |
2141 | ||
2142 | if (dio) { | |
2143 | ret = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2144 | OCFS2_DIO_ORPHAN_PREFIX); | |
2145 | if (ret != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2146 | ret = -EINVAL; | |
2147 | mlog_errno(ret); | |
2148 | return ret; | |
2149 | } | |
dd43bcde | 2150 | |
06ee5c75 JQ |
2151 | ret = ocfs2_blkno_stringify(blkno, |
2152 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2153 | } else | |
2154 | ret = ocfs2_blkno_stringify(blkno, name); | |
dd43bcde MF |
2155 | if (ret < 0) { |
2156 | mlog_errno(ret); | |
2157 | return ret; | |
2158 | } | |
2159 | ||
2160 | ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
2161 | orphan_dir_bh, name, | |
06ee5c75 | 2162 | namelen, lookup); |
dd43bcde MF |
2163 | if (ret < 0) { |
2164 | mlog_errno(ret); | |
2165 | return ret; | |
2166 | } | |
2167 | ||
2168 | return 0; | |
2169 | } | |
2170 | ||
2171 | /** | |
2172 | * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for | |
2173 | * insertion of an orphan. | |
2174 | * @osb: ocfs2 file system | |
2175 | * @ret_orphan_dir: Orphan dir inode - returned locked! | |
2176 | * @blkno: Actual block number of the inode to be inserted into orphan dir. | |
2177 | * @lookup: dir lookup result, to be passed back into functions like | |
2178 | * ocfs2_orphan_add | |
2179 | * | |
2180 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2181 | * fields will be populated. | |
2182 | * | |
2183 | * Returns non-zero on failure. | |
2184 | */ | |
2185 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
2186 | struct inode **ret_orphan_dir, | |
2187 | u64 blkno, | |
2188 | char *name, | |
06ee5c75 JQ |
2189 | struct ocfs2_dir_lookup_result *lookup, |
2190 | bool dio) | |
dd43bcde MF |
2191 | { |
2192 | struct inode *orphan_dir_inode = NULL; | |
2193 | struct buffer_head *orphan_dir_bh = NULL; | |
2194 | int ret = 0; | |
2195 | ||
2196 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode, | |
2197 | &orphan_dir_bh); | |
2198 | if (ret < 0) { | |
2199 | mlog_errno(ret); | |
2200 | return ret; | |
2201 | } | |
2202 | ||
2203 | ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh, | |
06ee5c75 | 2204 | blkno, name, lookup, dio); |
dd43bcde MF |
2205 | if (ret < 0) { |
2206 | mlog_errno(ret); | |
2207 | goto out; | |
ccd979bd MF |
2208 | } |
2209 | ||
5098c27b MF |
2210 | *ret_orphan_dir = orphan_dir_inode; |
2211 | ||
dd43bcde MF |
2212 | out: |
2213 | brelse(orphan_dir_bh); | |
2214 | ||
2215 | if (ret) { | |
2216 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2217 | inode_unlock(orphan_dir_inode); |
ccd979bd | 2218 | iput(orphan_dir_inode); |
5098c27b | 2219 | } |
ccd979bd | 2220 | |
c1e8d35e TM |
2221 | if (ret) |
2222 | mlog_errno(ret); | |
dd43bcde | 2223 | return ret; |
ccd979bd MF |
2224 | } |
2225 | ||
2226 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 2227 | handle_t *handle, |
ccd979bd | 2228 | struct inode *inode, |
3939fda4 | 2229 | struct buffer_head *fe_bh, |
ccd979bd | 2230 | char *name, |
4a12ca3a | 2231 | struct ocfs2_dir_lookup_result *lookup, |
06ee5c75 JQ |
2232 | struct inode *orphan_dir_inode, |
2233 | bool dio) | |
ccd979bd | 2234 | { |
ccd979bd MF |
2235 | struct buffer_head *orphan_dir_bh = NULL; |
2236 | int status = 0; | |
2237 | struct ocfs2_dinode *orphan_fe; | |
3939fda4 | 2238 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; |
06ee5c75 JQ |
2239 | int namelen = dio ? |
2240 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2241 | OCFS2_ORPHAN_NAMELEN; | |
ccd979bd | 2242 | |
8990e44a TM |
2243 | trace_ocfs2_orphan_add_begin( |
2244 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 2245 | |
b657c95c | 2246 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
2247 | if (status < 0) { |
2248 | mlog_errno(status); | |
2249 | goto leave; | |
2250 | } | |
2251 | ||
0cf2f763 JB |
2252 | status = ocfs2_journal_access_di(handle, |
2253 | INODE_CACHE(orphan_dir_inode), | |
2254 | orphan_dir_bh, | |
13723d00 | 2255 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2256 | if (status < 0) { |
2257 | mlog_errno(status); | |
2258 | goto leave; | |
2259 | } | |
2260 | ||
ea45466a YL |
2261 | /* |
2262 | * We're going to journal the change of i_flags and i_orphaned_slot. | |
2263 | * It's safe anyway, though some callers may duplicate the journaling. | |
2264 | * Journaling within the func just make the logic look more | |
2265 | * straightforward. | |
2266 | */ | |
2267 | status = ocfs2_journal_access_di(handle, | |
2268 | INODE_CACHE(inode), | |
2269 | fe_bh, | |
2270 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2271 | if (status < 0) { | |
2272 | mlog_errno(status); | |
2273 | goto leave; | |
2274 | } | |
2275 | ||
ccd979bd MF |
2276 | /* we're a cluster, and nlink can change on disk from |
2277 | * underneath us... */ | |
2278 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2279 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2280 | ocfs2_add_links_count(orphan_fe, 1); |
bfe86848 | 2281 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2282 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2283 | |
2284 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
06ee5c75 | 2285 | namelen, inode, |
ccd979bd | 2286 | OCFS2_I(inode)->ip_blkno, |
4a12ca3a | 2287 | orphan_dir_bh, lookup); |
ccd979bd MF |
2288 | if (status < 0) { |
2289 | mlog_errno(status); | |
ea45466a | 2290 | goto rollback; |
3939fda4 TY |
2291 | } |
2292 | ||
06ee5c75 JQ |
2293 | if (dio) { |
2294 | /* Update flag OCFS2_DIO_ORPHANED_FL and record the orphan | |
2295 | * slot. | |
2296 | */ | |
2297 | fe->i_flags |= cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2298 | fe->i_dio_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2299 | } else { | |
2300 | fe->i_flags |= cpu_to_le32(OCFS2_ORPHANED_FL); | |
2301 | OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR; | |
ccd979bd | 2302 | |
06ee5c75 JQ |
2303 | /* Record which orphan dir our inode now resides |
2304 | * in. delete_inode will use this to determine which orphan | |
2305 | * dir to lock. */ | |
2306 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2307 | } | |
ccd979bd | 2308 | |
3939fda4 TY |
2309 | ocfs2_journal_dirty(handle, fe_bh); |
2310 | ||
8990e44a TM |
2311 | trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno, |
2312 | osb->slot_num); | |
ccd979bd | 2313 | |
ea45466a YL |
2314 | rollback: |
2315 | if (status < 0) { | |
2316 | if (S_ISDIR(inode->i_mode)) | |
2317 | ocfs2_add_links_count(orphan_fe, -1); | |
2318 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); | |
2319 | } | |
2320 | ||
ccd979bd | 2321 | leave: |
a81cb88b | 2322 | brelse(orphan_dir_bh); |
ccd979bd | 2323 | |
ccd979bd MF |
2324 | return status; |
2325 | } | |
2326 | ||
2327 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
2328 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 2329 | handle_t *handle, |
ccd979bd MF |
2330 | struct inode *orphan_dir_inode, |
2331 | struct inode *inode, | |
06ee5c75 JQ |
2332 | struct buffer_head *orphan_dir_bh, |
2333 | bool dio) | |
ccd979bd | 2334 | { |
64202a21 | 2335 | char name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1]; |
ccd979bd MF |
2336 | struct ocfs2_dinode *orphan_fe; |
2337 | int status = 0; | |
4a12ca3a | 2338 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd | 2339 | |
06ee5c75 JQ |
2340 | if (dio) { |
2341 | status = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2342 | OCFS2_DIO_ORPHAN_PREFIX); | |
2343 | if (status != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2344 | status = -EINVAL; | |
2345 | mlog_errno(status); | |
2346 | return status; | |
2347 | } | |
2348 | ||
2349 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, | |
2350 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2351 | } else | |
2352 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
ccd979bd MF |
2353 | if (status < 0) { |
2354 | mlog_errno(status); | |
2355 | goto leave; | |
2356 | } | |
2357 | ||
8990e44a TM |
2358 | trace_ocfs2_orphan_del( |
2359 | (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
e38a5739 | 2360 | name, strlen(name)); |
ccd979bd | 2361 | |
074a6c65 JQ |
2362 | status = ocfs2_journal_access_di(handle, |
2363 | INODE_CACHE(orphan_dir_inode), | |
2364 | orphan_dir_bh, | |
2365 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2366 | if (status < 0) { | |
2367 | mlog_errno(status); | |
2368 | goto leave; | |
2369 | } | |
2370 | ||
ccd979bd | 2371 | /* find it's spot in the orphan directory */ |
e38a5739 | 2372 | status = ocfs2_find_entry(name, strlen(name), orphan_dir_inode, |
4a12ca3a MF |
2373 | &lookup); |
2374 | if (status) { | |
ccd979bd MF |
2375 | mlog_errno(status); |
2376 | goto leave; | |
2377 | } | |
2378 | ||
2379 | /* remove it from the orphan directory */ | |
4a12ca3a | 2380 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
2381 | if (status < 0) { |
2382 | mlog_errno(status); | |
2383 | goto leave; | |
2384 | } | |
2385 | ||
ccd979bd MF |
2386 | /* do the i_nlink dance! :) */ |
2387 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2388 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2389 | ocfs2_add_links_count(orphan_fe, -1); |
bfe86848 | 2390 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2391 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2392 | |
2393 | leave: | |
4a12ca3a | 2394 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd | 2395 | |
c1e8d35e TM |
2396 | if (status) |
2397 | mlog_errno(status); | |
ccd979bd MF |
2398 | return status; |
2399 | } | |
2400 | ||
97b8f4a9 | 2401 | /** |
25985edc | 2402 | * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to receive a newly |
97b8f4a9 MF |
2403 | * allocated file. This is different from the typical 'add to orphan dir' |
2404 | * operation in that the inode does not yet exist. This is a problem because | |
2405 | * the orphan dir stringifies the inode block number to come up with it's | |
2406 | * dirent. Obviously if the inode does not yet exist we have a chicken and egg | |
2407 | * problem. This function works around it by calling deeper into the orphan | |
2408 | * and suballoc code than other callers. Use this only by necessity. | |
2409 | * @dir: The directory which this inode will ultimately wind up under - not the | |
2410 | * orphan dir! | |
2411 | * @dir_bh: buffer_head the @dir inode block | |
2412 | * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled | |
2413 | * with the string to be used for orphan dirent. Pass back to the orphan dir | |
2414 | * code. | |
2415 | * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan | |
2416 | * dir code. | |
2417 | * @ret_di_blkno: block number where the new inode will be allocated. | |
2418 | * @orphan_insert: Dir insert context to be passed back into orphan dir code. | |
2419 | * @ret_inode_ac: Inode alloc context to be passed back to the allocator. | |
2420 | * | |
2421 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2422 | * fields will be populated. | |
2423 | * | |
2424 | * Returns non-zero on failure. | |
2425 | */ | |
2426 | static int ocfs2_prep_new_orphaned_file(struct inode *dir, | |
2427 | struct buffer_head *dir_bh, | |
2428 | char *orphan_name, | |
2429 | struct inode **ret_orphan_dir, | |
2430 | u64 *ret_di_blkno, | |
2431 | struct ocfs2_dir_lookup_result *orphan_insert, | |
2432 | struct ocfs2_alloc_context **ret_inode_ac) | |
2433 | { | |
2434 | int ret; | |
2435 | u64 di_blkno; | |
2436 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2437 | struct inode *orphan_dir = NULL; | |
2438 | struct buffer_head *orphan_dir_bh = NULL; | |
2439 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2440 | ||
2441 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh); | |
2442 | if (ret < 0) { | |
2443 | mlog_errno(ret); | |
2444 | return ret; | |
2445 | } | |
2446 | ||
2447 | /* reserve an inode spot */ | |
2448 | ret = ocfs2_reserve_new_inode(osb, &inode_ac); | |
2449 | if (ret < 0) { | |
2450 | if (ret != -ENOSPC) | |
2451 | mlog_errno(ret); | |
2452 | goto out; | |
2453 | } | |
2454 | ||
2455 | ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac, | |
2456 | &di_blkno); | |
2457 | if (ret) { | |
2458 | mlog_errno(ret); | |
2459 | goto out; | |
2460 | } | |
2461 | ||
2462 | ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh, | |
06ee5c75 JQ |
2463 | di_blkno, orphan_name, orphan_insert, |
2464 | false); | |
97b8f4a9 MF |
2465 | if (ret < 0) { |
2466 | mlog_errno(ret); | |
2467 | goto out; | |
2468 | } | |
2469 | ||
2470 | out: | |
2471 | if (ret == 0) { | |
2472 | *ret_orphan_dir = orphan_dir; | |
2473 | *ret_di_blkno = di_blkno; | |
2474 | *ret_inode_ac = inode_ac; | |
2475 | /* | |
2476 | * orphan_name and orphan_insert are already up to | |
2477 | * date via prepare_orphan_dir | |
2478 | */ | |
2479 | } else { | |
2480 | /* Unroll reserve_new_inode* */ | |
2481 | if (inode_ac) | |
2482 | ocfs2_free_alloc_context(inode_ac); | |
2483 | ||
2484 | /* Unroll orphan dir locking */ | |
5955102c | 2485 | inode_unlock(orphan_dir); |
97b8f4a9 MF |
2486 | ocfs2_inode_unlock(orphan_dir, 1); |
2487 | iput(orphan_dir); | |
2488 | } | |
2489 | ||
2490 | brelse(orphan_dir_bh); | |
2491 | ||
7869e590 | 2492 | return ret; |
97b8f4a9 MF |
2493 | } |
2494 | ||
bc13d347 TM |
2495 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
2496 | int mode, | |
2497 | struct inode **new_inode) | |
2498 | { | |
2499 | int status, did_quota_inode = 0; | |
2500 | struct inode *inode = NULL; | |
2501 | struct inode *orphan_dir = NULL; | |
2502 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2503 | struct ocfs2_dinode *di = NULL; | |
2504 | handle_t *handle = NULL; | |
2505 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2506 | struct buffer_head *parent_di_bh = NULL; | |
2507 | struct buffer_head *new_di_bh = NULL; | |
2508 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2509 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
97b8f4a9 MF |
2510 | u64 uninitialized_var(di_blkno), suballoc_loc; |
2511 | u16 suballoc_bit; | |
bc13d347 TM |
2512 | |
2513 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2514 | if (status < 0) { | |
2515 | if (status != -ENOENT) | |
2516 | mlog_errno(status); | |
2517 | return status; | |
2518 | } | |
2519 | ||
97b8f4a9 MF |
2520 | status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh, |
2521 | orphan_name, &orphan_dir, | |
2522 | &di_blkno, &orphan_insert, &inode_ac); | |
bc13d347 TM |
2523 | if (status < 0) { |
2524 | if (status != -ENOSPC) | |
2525 | mlog_errno(status); | |
2526 | goto leave; | |
2527 | } | |
2528 | ||
2529 | inode = ocfs2_get_init_inode(dir, mode); | |
9c89fe0a JK |
2530 | if (IS_ERR(inode)) { |
2531 | status = PTR_ERR(inode); | |
2532 | inode = NULL; | |
bc13d347 TM |
2533 | mlog_errno(status); |
2534 | goto leave; | |
2535 | } | |
2536 | ||
2537 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); | |
2538 | if (IS_ERR(handle)) { | |
2539 | status = PTR_ERR(handle); | |
2540 | handle = NULL; | |
2541 | mlog_errno(status); | |
2542 | goto leave; | |
2543 | } | |
2544 | ||
63936dda CH |
2545 | status = dquot_alloc_inode(inode); |
2546 | if (status) | |
bc13d347 | 2547 | goto leave; |
bc13d347 TM |
2548 | did_quota_inode = 1; |
2549 | ||
97b8f4a9 MF |
2550 | status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac, |
2551 | &suballoc_loc, | |
2552 | &suballoc_bit, di_blkno); | |
bc13d347 TM |
2553 | if (status < 0) { |
2554 | mlog_errno(status); | |
2555 | goto leave; | |
2556 | } | |
2557 | ||
6d6b77f1 | 2558 | clear_nlink(inode); |
97b8f4a9 MF |
2559 | /* do the real work now. */ |
2560 | status = __ocfs2_mknod_locked(dir, inode, | |
2561 | 0, &new_di_bh, parent_di_bh, handle, | |
2562 | inode_ac, di_blkno, suballoc_loc, | |
2563 | suballoc_bit); | |
bc13d347 TM |
2564 | if (status < 0) { |
2565 | mlog_errno(status); | |
2566 | goto leave; | |
2567 | } | |
2568 | ||
2569 | di = (struct ocfs2_dinode *)new_di_bh->b_data; | |
3939fda4 | 2570 | status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name, |
06ee5c75 | 2571 | &orphan_insert, orphan_dir, false); |
bc13d347 TM |
2572 | if (status < 0) { |
2573 | mlog_errno(status); | |
2574 | goto leave; | |
2575 | } | |
2576 | ||
2577 | /* get open lock so that only nodes can't remove it from orphan dir. */ | |
2578 | status = ocfs2_open_lock(inode); | |
2579 | if (status < 0) | |
2580 | mlog_errno(status); | |
2581 | ||
c7d260af | 2582 | insert_inode_hash(inode); |
bc13d347 TM |
2583 | leave: |
2584 | if (status < 0 && did_quota_inode) | |
63936dda | 2585 | dquot_free_inode(inode); |
bc13d347 TM |
2586 | if (handle) |
2587 | ocfs2_commit_trans(osb, handle); | |
2588 | ||
2589 | if (orphan_dir) { | |
2590 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
2591 | ocfs2_inode_unlock(orphan_dir, 1); | |
5955102c | 2592 | inode_unlock(orphan_dir); |
bc13d347 TM |
2593 | iput(orphan_dir); |
2594 | } | |
2595 | ||
bc13d347 TM |
2596 | if ((status < 0) && inode) { |
2597 | clear_nlink(inode); | |
2598 | iput(inode); | |
2599 | } | |
2600 | ||
2601 | if (inode_ac) | |
2602 | ocfs2_free_alloc_context(inode_ac); | |
2603 | ||
2604 | brelse(new_di_bh); | |
2605 | ||
2606 | if (!status) | |
2607 | *new_inode = inode; | |
2608 | ||
2609 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2610 | ||
2611 | ocfs2_inode_unlock(dir, 1); | |
2612 | brelse(parent_di_bh); | |
2613 | return status; | |
2614 | } | |
2615 | ||
06ee5c75 JQ |
2616 | int ocfs2_add_inode_to_orphan(struct ocfs2_super *osb, |
2617 | struct inode *inode) | |
2618 | { | |
2619 | char orphan_name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1]; | |
2620 | struct inode *orphan_dir_inode = NULL; | |
2621 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
2622 | struct buffer_head *di_bh = NULL; | |
2623 | int status = 0; | |
2624 | handle_t *handle = NULL; | |
4813962b | 2625 | struct ocfs2_dinode *di = NULL; |
06ee5c75 JQ |
2626 | |
2627 | status = ocfs2_inode_lock(inode, &di_bh, 1); | |
2628 | if (status < 0) { | |
2629 | mlog_errno(status); | |
2630 | goto bail; | |
2631 | } | |
2632 | ||
4813962b JQ |
2633 | di = (struct ocfs2_dinode *) di_bh->b_data; |
2634 | /* | |
2635 | * Another append dio crashed? | |
512f62ac | 2636 | * If so, manually recover it first. |
4813962b JQ |
2637 | */ |
2638 | if (unlikely(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))) { | |
512f62ac JQ |
2639 | status = ocfs2_truncate_file(inode, di_bh, i_size_read(inode)); |
2640 | if (status < 0) { | |
2641 | if (status != -ENOSPC) | |
2642 | mlog_errno(status); | |
2643 | goto bail_unlock_inode; | |
2644 | } | |
2645 | ||
2646 | status = ocfs2_del_inode_from_orphan(osb, inode, di_bh, 0, 0); | |
2647 | if (status < 0) { | |
2648 | mlog_errno(status); | |
2649 | goto bail_unlock_inode; | |
2650 | } | |
4813962b JQ |
2651 | } |
2652 | ||
06ee5c75 JQ |
2653 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir_inode, |
2654 | OCFS2_I(inode)->ip_blkno, | |
2655 | orphan_name, | |
2656 | &orphan_insert, | |
2657 | true); | |
2658 | if (status < 0) { | |
2659 | mlog_errno(status); | |
2660 | goto bail_unlock_inode; | |
2661 | } | |
2662 | ||
2663 | handle = ocfs2_start_trans(osb, | |
2664 | OCFS2_INODE_ADD_TO_ORPHAN_CREDITS); | |
2665 | if (IS_ERR(handle)) { | |
2666 | status = PTR_ERR(handle); | |
2667 | goto bail_unlock_orphan; | |
2668 | } | |
2669 | ||
2670 | status = ocfs2_orphan_add(osb, handle, inode, di_bh, orphan_name, | |
2671 | &orphan_insert, orphan_dir_inode, true); | |
2672 | if (status) | |
2673 | mlog_errno(status); | |
2674 | ||
2675 | ocfs2_commit_trans(osb, handle); | |
2676 | ||
2677 | bail_unlock_orphan: | |
2678 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2679 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2680 | iput(orphan_dir_inode); |
2681 | ||
2682 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2683 | ||
2684 | bail_unlock_inode: | |
2685 | ocfs2_inode_unlock(inode, 1); | |
2686 | brelse(di_bh); | |
2687 | ||
2688 | bail: | |
2689 | return status; | |
2690 | } | |
2691 | ||
2692 | int ocfs2_del_inode_from_orphan(struct ocfs2_super *osb, | |
cf1776a9 JQ |
2693 | struct inode *inode, struct buffer_head *di_bh, |
2694 | int update_isize, loff_t end) | |
06ee5c75 JQ |
2695 | { |
2696 | struct inode *orphan_dir_inode = NULL; | |
2697 | struct buffer_head *orphan_dir_bh = NULL; | |
cf1776a9 | 2698 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data; |
06ee5c75 JQ |
2699 | handle_t *handle = NULL; |
2700 | int status = 0; | |
2701 | ||
06ee5c75 JQ |
2702 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
2703 | ORPHAN_DIR_SYSTEM_INODE, | |
2704 | le16_to_cpu(di->i_dio_orphaned_slot)); | |
2705 | if (!orphan_dir_inode) { | |
2706 | status = -ENOENT; | |
2707 | mlog_errno(status); | |
cf1776a9 | 2708 | goto bail; |
06ee5c75 JQ |
2709 | } |
2710 | ||
5955102c | 2711 | inode_lock(orphan_dir_inode); |
06ee5c75 JQ |
2712 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2713 | if (status < 0) { | |
5955102c | 2714 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2715 | iput(orphan_dir_inode); |
2716 | mlog_errno(status); | |
cf1776a9 | 2717 | goto bail; |
06ee5c75 JQ |
2718 | } |
2719 | ||
2720 | handle = ocfs2_start_trans(osb, | |
2721 | OCFS2_INODE_DEL_FROM_ORPHAN_CREDITS); | |
2722 | if (IS_ERR(handle)) { | |
2723 | status = PTR_ERR(handle); | |
2724 | goto bail_unlock_orphan; | |
2725 | } | |
2726 | ||
2727 | BUG_ON(!(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))); | |
2728 | ||
2729 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, | |
2730 | inode, orphan_dir_bh, true); | |
2731 | if (status < 0) { | |
2732 | mlog_errno(status); | |
2733 | goto bail_commit; | |
2734 | } | |
2735 | ||
2736 | status = ocfs2_journal_access_di(handle, | |
2737 | INODE_CACHE(inode), | |
2738 | di_bh, | |
2739 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2740 | if (status < 0) { | |
2741 | mlog_errno(status); | |
2742 | goto bail_commit; | |
2743 | } | |
2744 | ||
2745 | di->i_flags &= ~cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2746 | di->i_dio_orphaned_slot = 0; | |
2747 | ||
2748 | if (update_isize) { | |
2749 | status = ocfs2_set_inode_size(handle, inode, di_bh, end); | |
2750 | if (status) | |
2751 | mlog_errno(status); | |
2752 | } else | |
2753 | ocfs2_journal_dirty(handle, di_bh); | |
2754 | ||
2755 | bail_commit: | |
2756 | ocfs2_commit_trans(osb, handle); | |
2757 | ||
2758 | bail_unlock_orphan: | |
2759 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2760 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2761 | brelse(orphan_dir_bh); |
2762 | iput(orphan_dir_inode); | |
2763 | ||
06ee5c75 JQ |
2764 | bail: |
2765 | return status; | |
2766 | } | |
2767 | ||
bc13d347 TM |
2768 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, |
2769 | struct inode *inode, | |
2770 | struct dentry *dentry) | |
2771 | { | |
2772 | int status = 0; | |
2773 | struct buffer_head *parent_di_bh = NULL; | |
2774 | handle_t *handle = NULL; | |
2775 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2776 | struct ocfs2_dinode *dir_di, *di; | |
2777 | struct inode *orphan_dir_inode = NULL; | |
2778 | struct buffer_head *orphan_dir_bh = NULL; | |
2779 | struct buffer_head *di_bh = NULL; | |
2780 | struct ocfs2_dir_lookup_result lookup = { NULL, }; | |
2781 | ||
8990e44a TM |
2782 | trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry, |
2783 | dentry->d_name.len, dentry->d_name.name, | |
2784 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
2785 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
bc13d347 TM |
2786 | |
2787 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2788 | if (status < 0) { | |
2789 | if (status != -ENOENT) | |
2790 | mlog_errno(status); | |
2791 | return status; | |
2792 | } | |
2793 | ||
2794 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; | |
2795 | if (!dir_di->i_links_count) { | |
2796 | /* can't make a file in a deleted directory. */ | |
2797 | status = -ENOENT; | |
2798 | goto leave; | |
2799 | } | |
2800 | ||
2801 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
2802 | dentry->d_name.len); | |
2803 | if (status) | |
2804 | goto leave; | |
2805 | ||
2806 | /* get a spot inside the dir. */ | |
2807 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, | |
2808 | dentry->d_name.name, | |
2809 | dentry->d_name.len, &lookup); | |
2810 | if (status < 0) { | |
2811 | mlog_errno(status); | |
2812 | goto leave; | |
2813 | } | |
2814 | ||
2815 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2816 | ORPHAN_DIR_SYSTEM_INODE, | |
2817 | osb->slot_num); | |
2818 | if (!orphan_dir_inode) { | |
62f8b1f0 | 2819 | status = -ENOENT; |
bc13d347 TM |
2820 | mlog_errno(status); |
2821 | goto leave; | |
2822 | } | |
2823 | ||
5955102c | 2824 | inode_lock(orphan_dir_inode); |
bc13d347 TM |
2825 | |
2826 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2827 | if (status < 0) { | |
2828 | mlog_errno(status); | |
5955102c | 2829 | inode_unlock(orphan_dir_inode); |
bc13d347 TM |
2830 | iput(orphan_dir_inode); |
2831 | goto leave; | |
2832 | } | |
2833 | ||
2834 | status = ocfs2_read_inode_block(inode, &di_bh); | |
2835 | if (status < 0) { | |
2836 | mlog_errno(status); | |
2837 | goto orphan_unlock; | |
2838 | } | |
2839 | ||
2840 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); | |
2841 | if (IS_ERR(handle)) { | |
2842 | status = PTR_ERR(handle); | |
2843 | handle = NULL; | |
2844 | mlog_errno(status); | |
2845 | goto orphan_unlock; | |
2846 | } | |
2847 | ||
2848 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), | |
2849 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2850 | if (status < 0) { | |
2851 | mlog_errno(status); | |
2852 | goto out_commit; | |
2853 | } | |
2854 | ||
2855 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
06ee5c75 | 2856 | orphan_dir_bh, false); |
bc13d347 TM |
2857 | if (status < 0) { |
2858 | mlog_errno(status); | |
2859 | goto out_commit; | |
2860 | } | |
2861 | ||
2862 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
13eb9887 | 2863 | di->i_flags &= ~cpu_to_le32(OCFS2_ORPHANED_FL); |
bc13d347 | 2864 | di->i_orphaned_slot = 0; |
bfe86848 | 2865 | set_nlink(inode, 1); |
10cf1a02 | 2866 | ocfs2_set_links_count(di, inode->i_nlink); |
6fdb702d | 2867 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
bc13d347 TM |
2868 | ocfs2_journal_dirty(handle, di_bh); |
2869 | ||
2870 | status = ocfs2_add_entry(handle, dentry, inode, | |
2871 | OCFS2_I(inode)->ip_blkno, parent_di_bh, | |
2872 | &lookup); | |
2873 | if (status < 0) { | |
2874 | mlog_errno(status); | |
2875 | goto out_commit; | |
2876 | } | |
2877 | ||
2878 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
2879 | OCFS2_I(dir)->ip_blkno); | |
2880 | if (status) { | |
2881 | mlog_errno(status); | |
2882 | goto out_commit; | |
2883 | } | |
2884 | ||
bc13d347 TM |
2885 | d_instantiate(dentry, inode); |
2886 | status = 0; | |
2887 | out_commit: | |
2888 | ocfs2_commit_trans(osb, handle); | |
2889 | orphan_unlock: | |
2890 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2891 | inode_unlock(orphan_dir_inode); |
bc13d347 TM |
2892 | iput(orphan_dir_inode); |
2893 | leave: | |
2894 | ||
2895 | ocfs2_inode_unlock(dir, 1); | |
2896 | ||
2897 | brelse(di_bh); | |
2898 | brelse(parent_di_bh); | |
2899 | brelse(orphan_dir_bh); | |
2900 | ||
2901 | ocfs2_free_dir_lookup_result(&lookup); | |
2902 | ||
c1e8d35e TM |
2903 | if (status) |
2904 | mlog_errno(status); | |
bc13d347 TM |
2905 | |
2906 | return status; | |
2907 | } | |
2908 | ||
92e1d5be | 2909 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2910 | .create = ocfs2_create, |
2911 | .lookup = ocfs2_lookup, | |
2912 | .link = ocfs2_link, | |
2913 | .unlink = ocfs2_unlink, | |
2914 | .rmdir = ocfs2_unlink, | |
2915 | .symlink = ocfs2_symlink, | |
2916 | .mkdir = ocfs2_mkdir, | |
2917 | .mknod = ocfs2_mknod, | |
2918 | .rename = ocfs2_rename, | |
2919 | .setattr = ocfs2_setattr, | |
2920 | .getattr = ocfs2_getattr, | |
d38eb8db | 2921 | .permission = ocfs2_permission, |
cf1d6c76 | 2922 | .listxattr = ocfs2_listxattr, |
55f4946e | 2923 | .fiemap = ocfs2_fiemap, |
4e34e719 | 2924 | .get_acl = ocfs2_iop_get_acl, |
702e5bc6 | 2925 | .set_acl = ocfs2_iop_set_acl, |
ccd979bd | 2926 | }; |