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ccd979bd MF |
1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * namei.c | |
5 | * | |
6 | * Create and rename file, directory, symlinks | |
7 | * | |
8 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
9 | * | |
10 | * Portions of this code from linux/fs/ext3/dir.c | |
11 | * | |
12 | * Copyright (C) 1992, 1993, 1994, 1995 | |
13 | * Remy Card (card@masi.ibp.fr) | |
14 | * Laboratoire MASI - Institut Blaise pascal | |
15 | * Universite Pierre et Marie Curie (Paris VI) | |
16 | * | |
17 | * from | |
18 | * | |
19 | * linux/fs/minix/dir.c | |
20 | * | |
21 | * Copyright (C) 1991, 1992 Linux Torvalds | |
22 | * | |
23 | * This program is free software; you can redistribute it and/or | |
24 | * modify it under the terms of the GNU General Public | |
25 | * License as published by the Free Software Foundation; either | |
26 | * version 2 of the License, or (at your option) any later version. | |
27 | * | |
28 | * This program is distributed in the hope that it will be useful, | |
29 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
30 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
31 | * General Public License for more details. | |
32 | * | |
33 | * You should have received a copy of the GNU General Public | |
34 | * License along with this program; if not, write to the | |
35 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
36 | * Boston, MA 021110-1307, USA. | |
37 | */ | |
38 | ||
39 | #include <linux/fs.h> | |
40 | #include <linux/types.h> | |
41 | #include <linux/slab.h> | |
42 | #include <linux/highmem.h> | |
a90714c1 | 43 | #include <linux/quotaops.h> |
ccd979bd | 44 | |
ccd979bd MF |
45 | #include <cluster/masklog.h> |
46 | ||
47 | #include "ocfs2.h" | |
48 | ||
49 | #include "alloc.h" | |
50 | #include "dcache.h" | |
51 | #include "dir.h" | |
52 | #include "dlmglue.h" | |
53 | #include "extent_map.h" | |
54 | #include "file.h" | |
55 | #include "inode.h" | |
56 | #include "journal.h" | |
57 | #include "namei.h" | |
58 | #include "suballoc.h" | |
aa958874 | 59 | #include "super.h" |
ccd979bd MF |
60 | #include "symlink.h" |
61 | #include "sysfile.h" | |
62 | #include "uptodate.h" | |
cf1d6c76 | 63 | #include "xattr.h" |
89c38bd0 | 64 | #include "acl.h" |
8990e44a | 65 | #include "ocfs2_trace.h" |
ccd979bd MF |
66 | |
67 | #include "buffer_head_io.h" | |
68 | ||
ccd979bd MF |
69 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
70 | struct inode *dir, | |
f5d36202 | 71 | struct inode *inode, |
ccd979bd MF |
72 | dev_t dev, |
73 | struct buffer_head **new_fe_bh, | |
74 | struct buffer_head *parent_fe_bh, | |
1fabe148 | 75 | handle_t *handle, |
ccd979bd MF |
76 | struct ocfs2_alloc_context *inode_ac); |
77 | ||
ccd979bd | 78 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, |
5098c27b | 79 | struct inode **ret_orphan_dir, |
19bd341f | 80 | u64 blkno, |
ccd979bd | 81 | char *name, |
06ee5c75 JQ |
82 | struct ocfs2_dir_lookup_result *lookup, |
83 | bool dio); | |
ccd979bd MF |
84 | |
85 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 86 | handle_t *handle, |
ccd979bd | 87 | struct inode *inode, |
3939fda4 | 88 | struct buffer_head *fe_bh, |
ccd979bd | 89 | char *name, |
4a12ca3a | 90 | struct ocfs2_dir_lookup_result *lookup, |
06ee5c75 JQ |
91 | struct inode *orphan_dir_inode, |
92 | bool dio); | |
ccd979bd MF |
93 | |
94 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 95 | handle_t *handle, |
ccd979bd MF |
96 | struct inode *inode, |
97 | const char *symname); | |
98 | ||
53dc20b9 X |
99 | static int ocfs2_double_lock(struct ocfs2_super *osb, |
100 | struct buffer_head **bh1, | |
101 | struct inode *inode1, | |
102 | struct buffer_head **bh2, | |
103 | struct inode *inode2, | |
104 | int rename); | |
105 | ||
106 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2); | |
ccd979bd MF |
107 | /* An orphan dir name is an 8 byte value, printed as a hex string */ |
108 | #define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64))) | |
06ee5c75 JQ |
109 | #define OCFS2_DIO_ORPHAN_PREFIX "dio-" |
110 | #define OCFS2_DIO_ORPHAN_PREFIX_LEN 4 | |
ccd979bd MF |
111 | |
112 | static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry, | |
00cd8dd3 | 113 | unsigned int flags) |
ccd979bd MF |
114 | { |
115 | int status; | |
116 | u64 blkno; | |
ccd979bd MF |
117 | struct inode *inode = NULL; |
118 | struct dentry *ret; | |
ccd979bd MF |
119 | struct ocfs2_inode_info *oi; |
120 | ||
8990e44a TM |
121 | trace_ocfs2_lookup(dir, dentry, dentry->d_name.len, |
122 | dentry->d_name.name, | |
123 | (unsigned long long)OCFS2_I(dir)->ip_blkno, 0); | |
ccd979bd MF |
124 | |
125 | if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) { | |
126 | ret = ERR_PTR(-ENAMETOOLONG); | |
127 | goto bail; | |
128 | } | |
129 | ||
cb25797d | 130 | status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT); |
ccd979bd MF |
131 | if (status < 0) { |
132 | if (status != -ENOENT) | |
133 | mlog_errno(status); | |
134 | ret = ERR_PTR(status); | |
135 | goto bail; | |
136 | } | |
137 | ||
be94d117 MF |
138 | status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name, |
139 | dentry->d_name.len, &blkno); | |
ccd979bd MF |
140 | if (status < 0) |
141 | goto bail_add; | |
142 | ||
5fa0613e | 143 | inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0); |
ccd979bd | 144 | if (IS_ERR(inode)) { |
ccd979bd MF |
145 | ret = ERR_PTR(-EACCES); |
146 | goto bail_unlock; | |
147 | } | |
148 | ||
149 | oi = OCFS2_I(inode); | |
150 | /* Clear any orphaned state... If we were able to look up the | |
151 | * inode from a directory, it certainly can't be orphaned. We | |
152 | * might have the bad state from a node which intended to | |
153 | * orphan this inode but crashed before it could commit the | |
154 | * unlink. */ | |
155 | spin_lock(&oi->ip_lock); | |
156 | oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED; | |
ccd979bd MF |
157 | spin_unlock(&oi->ip_lock); |
158 | ||
159 | bail_add: | |
ccd979bd MF |
160 | ret = d_splice_alias(inode, dentry); |
161 | ||
379dfe9d MF |
162 | if (inode) { |
163 | /* | |
164 | * If d_splice_alias() finds a DCACHE_DISCONNECTED | |
165 | * dentry, it will d_move() it on top of ourse. The | |
166 | * return value will indicate this however, so in | |
167 | * those cases, we switch them around for the locking | |
168 | * code. | |
169 | * | |
170 | * NOTE: This dentry already has ->d_op set from | |
171 | * ocfs2_get_parent() and ocfs2_get_dentry() | |
172 | */ | |
d3556bab | 173 | if (!IS_ERR_OR_NULL(ret)) |
379dfe9d MF |
174 | dentry = ret; |
175 | ||
176 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
0027dd5b | 177 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
178 | if (status) { |
179 | mlog_errno(status); | |
180 | ret = ERR_PTR(status); | |
181 | goto bail_unlock; | |
182 | } | |
5e98d492 GR |
183 | } else |
184 | ocfs2_dentry_attach_gen(dentry); | |
379dfe9d | 185 | |
ccd979bd MF |
186 | bail_unlock: |
187 | /* Don't drop the cluster lock until *after* the d_add -- | |
188 | * unlink on another node will message us to remove that | |
189 | * dentry under this lock so otherwise we can race this with | |
34d024f8 | 190 | * the downconvert thread and have a stale dentry. */ |
e63aecb6 | 191 | ocfs2_inode_unlock(dir, 0); |
ccd979bd MF |
192 | |
193 | bail: | |
ccd979bd | 194 | |
8990e44a | 195 | trace_ocfs2_lookup_ret(ret); |
ccd979bd MF |
196 | |
197 | return ret; | |
198 | } | |
199 | ||
67697cbd | 200 | static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode) |
f5d36202 TY |
201 | { |
202 | struct inode *inode; | |
9c89fe0a | 203 | int status; |
f5d36202 TY |
204 | |
205 | inode = new_inode(dir->i_sb); | |
206 | if (!inode) { | |
207 | mlog(ML_ERROR, "new_inode failed!\n"); | |
9c89fe0a | 208 | return ERR_PTR(-ENOMEM); |
f5d36202 TY |
209 | } |
210 | ||
211 | /* populate as many fields early on as possible - many of | |
212 | * these are used by the support functions here and in | |
213 | * callers. */ | |
214 | if (S_ISDIR(mode)) | |
bfe86848 | 215 | set_nlink(inode, 2); |
75fe0a24 | 216 | inode_init_owner(inode, dir, mode); |
9c89fe0a JK |
217 | status = dquot_initialize(inode); |
218 | if (status) | |
219 | return ERR_PTR(status); | |
220 | ||
f5d36202 TY |
221 | return inode; |
222 | } | |
223 | ||
595297a8 | 224 | static void ocfs2_cleanup_add_entry_failure(struct ocfs2_super *osb, |
225 | struct dentry *dentry, struct inode *inode) | |
226 | { | |
227 | struct ocfs2_dentry_lock *dl = dentry->d_fsdata; | |
228 | ||
229 | ocfs2_simple_drop_lockres(osb, &dl->dl_lockres); | |
230 | ocfs2_lock_res_free(&dl->dl_lockres); | |
231 | BUG_ON(dl->dl_count != 1); | |
232 | spin_lock(&dentry_attach_lock); | |
233 | dentry->d_fsdata = NULL; | |
234 | spin_unlock(&dentry_attach_lock); | |
235 | kfree(dl); | |
236 | iput(inode); | |
237 | } | |
238 | ||
ccd979bd MF |
239 | static int ocfs2_mknod(struct inode *dir, |
240 | struct dentry *dentry, | |
1a67aafb | 241 | umode_t mode, |
ccd979bd MF |
242 | dev_t dev) |
243 | { | |
244 | int status = 0; | |
245 | struct buffer_head *parent_fe_bh = NULL; | |
1fabe148 | 246 | handle_t *handle = NULL; |
ccd979bd MF |
247 | struct ocfs2_super *osb; |
248 | struct ocfs2_dinode *dirfe; | |
249 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
250 | struct inode *inode = NULL; |
251 | struct ocfs2_alloc_context *inode_ac = NULL; | |
252 | struct ocfs2_alloc_context *data_ac = NULL; | |
9b7895ef | 253 | struct ocfs2_alloc_context *meta_ac = NULL; |
534eaddd | 254 | int want_clusters = 0; |
9b7895ef | 255 | int want_meta = 0; |
534eaddd TY |
256 | int xattr_credits = 0; |
257 | struct ocfs2_security_xattr_info si = { | |
258 | .enable = 1, | |
259 | }; | |
a90714c1 | 260 | int did_quota_inode = 0; |
4a12ca3a | 261 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
262 | sigset_t oldset; |
263 | int did_block_signals = 0; | |
702e5bc6 | 264 | struct posix_acl *default_acl = NULL, *acl = NULL; |
595297a8 | 265 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 266 | |
8990e44a TM |
267 | trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
268 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
269 | (unsigned long)dev, mode); | |
ccd979bd | 270 | |
9c89fe0a JK |
271 | status = dquot_initialize(dir); |
272 | if (status) { | |
273 | mlog_errno(status); | |
274 | return status; | |
275 | } | |
907f4554 | 276 | |
ccd979bd MF |
277 | /* get our super block */ |
278 | osb = OCFS2_SB(dir->i_sb); | |
279 | ||
e63aecb6 | 280 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
e3a82138 MF |
281 | if (status < 0) { |
282 | if (status != -ENOENT) | |
283 | mlog_errno(status); | |
284 | return status; | |
285 | } | |
286 | ||
198a1ca3 | 287 | if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) { |
a663e305 MF |
288 | status = -EMLINK; |
289 | goto leave; | |
290 | } | |
291 | ||
ccd979bd | 292 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
198a1ca3 | 293 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
294 | /* can't make a file in a deleted directory. */ |
295 | status = -ENOENT; | |
296 | goto leave; | |
297 | } | |
298 | ||
299 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
300 | dentry->d_name.len); | |
301 | if (status) | |
302 | goto leave; | |
303 | ||
304 | /* get a spot inside the dir. */ | |
305 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
306 | dentry->d_name.name, | |
4a12ca3a | 307 | dentry->d_name.len, &lookup); |
ccd979bd MF |
308 | if (status < 0) { |
309 | mlog_errno(status); | |
310 | goto leave; | |
311 | } | |
312 | ||
313 | /* reserve an inode spot */ | |
da5cbf2f | 314 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
315 | if (status < 0) { |
316 | if (status != -ENOSPC) | |
317 | mlog_errno(status); | |
318 | goto leave; | |
319 | } | |
320 | ||
f5d36202 | 321 | inode = ocfs2_get_init_inode(dir, mode); |
9c89fe0a JK |
322 | if (IS_ERR(inode)) { |
323 | status = PTR_ERR(inode); | |
324 | inode = NULL; | |
f5d36202 TY |
325 | mlog_errno(status); |
326 | goto leave; | |
327 | } | |
328 | ||
534eaddd | 329 | /* get security xattr */ |
2a7dba39 | 330 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
331 | if (status) { |
332 | if (status == -EOPNOTSUPP) | |
333 | si.enable = 0; | |
334 | else { | |
335 | mlog_errno(status); | |
336 | goto leave; | |
337 | } | |
338 | } | |
339 | ||
89c38bd0 TY |
340 | /* calculate meta data/clusters for setting security and acl xattr */ |
341 | status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode, | |
9b7895ef MF |
342 | &si, &want_clusters, |
343 | &xattr_credits, &want_meta); | |
89c38bd0 TY |
344 | if (status < 0) { |
345 | mlog_errno(status); | |
346 | goto leave; | |
ccd979bd MF |
347 | } |
348 | ||
534eaddd | 349 | /* Reserve a cluster if creating an extent based directory. */ |
9b7895ef | 350 | if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) { |
534eaddd TY |
351 | want_clusters += 1; |
352 | ||
9b7895ef | 353 | /* Dir indexing requires extra space as well */ |
4ed8a6bb | 354 | if (ocfs2_supports_indexed_dirs(osb)) |
9b7895ef | 355 | want_meta++; |
9b7895ef MF |
356 | } |
357 | ||
358 | status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac); | |
359 | if (status < 0) { | |
360 | if (status != -ENOSPC) | |
361 | mlog_errno(status); | |
362 | goto leave; | |
363 | } | |
364 | ||
534eaddd TY |
365 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); |
366 | if (status < 0) { | |
367 | if (status != -ENOSPC) | |
368 | mlog_errno(status); | |
369 | goto leave; | |
370 | } | |
371 | ||
702e5bc6 CH |
372 | status = posix_acl_create(dir, &mode, &default_acl, &acl); |
373 | if (status) { | |
374 | mlog_errno(status); | |
375 | goto leave; | |
376 | } | |
377 | ||
9b7895ef MF |
378 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, |
379 | S_ISDIR(mode), | |
380 | xattr_credits)); | |
ccd979bd MF |
381 | if (IS_ERR(handle)) { |
382 | status = PTR_ERR(handle); | |
383 | handle = NULL; | |
384 | mlog_errno(status); | |
385 | goto leave; | |
386 | } | |
387 | ||
547ba7c8 JB |
388 | /* Starting to change things, restart is no longer possible. */ |
389 | ocfs2_block_signals(&oldset); | |
390 | did_block_signals = 1; | |
391 | ||
63936dda CH |
392 | status = dquot_alloc_inode(inode); |
393 | if (status) | |
a90714c1 | 394 | goto leave; |
a90714c1 JK |
395 | did_quota_inode = 1; |
396 | ||
ccd979bd | 397 | /* do the real work now. */ |
19bd341f | 398 | status = ocfs2_mknod_locked(osb, dir, inode, dev, |
ccd979bd | 399 | &new_fe_bh, parent_fe_bh, handle, |
f5d36202 | 400 | inode_ac); |
ccd979bd MF |
401 | if (status < 0) { |
402 | mlog_errno(status); | |
403 | goto leave; | |
404 | } | |
405 | ||
406 | if (S_ISDIR(mode)) { | |
407 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, | |
9b7895ef | 408 | new_fe_bh, data_ac, meta_ac); |
ccd979bd MF |
409 | if (status < 0) { |
410 | mlog_errno(status); | |
411 | goto leave; | |
412 | } | |
413 | ||
0cf2f763 JB |
414 | status = ocfs2_journal_access_di(handle, INODE_CACHE(dir), |
415 | parent_fe_bh, | |
13723d00 | 416 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
417 | if (status < 0) { |
418 | mlog_errno(status); | |
419 | goto leave; | |
420 | } | |
198a1ca3 | 421 | ocfs2_add_links_count(dirfe, 1); |
ec20cec7 | 422 | ocfs2_journal_dirty(handle, parent_fe_bh); |
d8c76e6f | 423 | inc_nlink(dir); |
ccd979bd MF |
424 | } |
425 | ||
702e5bc6 CH |
426 | if (default_acl) { |
427 | status = ocfs2_set_acl(handle, inode, new_fe_bh, | |
428 | ACL_TYPE_DEFAULT, default_acl, | |
429 | meta_ac, data_ac); | |
430 | } | |
431 | if (!status && acl) { | |
432 | status = ocfs2_set_acl(handle, inode, new_fe_bh, | |
433 | ACL_TYPE_ACCESS, acl, | |
434 | meta_ac, data_ac); | |
435 | } | |
436 | ||
89c38bd0 TY |
437 | if (status < 0) { |
438 | mlog_errno(status); | |
439 | goto leave; | |
440 | } | |
441 | ||
534eaddd TY |
442 | if (si.enable) { |
443 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
9b7895ef | 444 | meta_ac, data_ac); |
534eaddd TY |
445 | if (status < 0) { |
446 | mlog_errno(status); | |
447 | goto leave; | |
448 | } | |
449 | } | |
450 | ||
a9743fcd MF |
451 | /* |
452 | * Do this before adding the entry to the directory. We add | |
453 | * also set d_op after success so that ->d_iput() will cleanup | |
454 | * the dentry lock even if ocfs2_add_entry() fails below. | |
455 | */ | |
456 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
457 | OCFS2_I(dir)->ip_blkno); | |
458 | if (status) { | |
ccd979bd MF |
459 | mlog_errno(status); |
460 | goto leave; | |
461 | } | |
462 | ||
595297a8 | 463 | dl = dentry->d_fsdata; |
464 | ||
a9743fcd MF |
465 | status = ocfs2_add_entry(handle, dentry, inode, |
466 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
467 | &lookup); | |
468 | if (status < 0) { | |
379dfe9d MF |
469 | mlog_errno(status); |
470 | goto leave; | |
471 | } | |
472 | ||
ccd979bd | 473 | insert_inode_hash(inode); |
ccd979bd MF |
474 | d_instantiate(dentry, inode); |
475 | status = 0; | |
476 | leave: | |
702e5bc6 CH |
477 | if (default_acl) |
478 | posix_acl_release(default_acl); | |
479 | if (acl) | |
480 | posix_acl_release(acl); | |
a90714c1 | 481 | if (status < 0 && did_quota_inode) |
63936dda | 482 | dquot_free_inode(inode); |
ccd979bd | 483 | if (handle) |
02dc1af4 | 484 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 485 | |
e63aecb6 | 486 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
487 | if (did_block_signals) |
488 | ocfs2_unblock_signals(&oldset); | |
e3a82138 | 489 | |
a81cb88b | 490 | brelse(new_fe_bh); |
a81cb88b | 491 | brelse(parent_fe_bh); |
534eaddd | 492 | kfree(si.value); |
ccd979bd | 493 | |
4a12ca3a MF |
494 | ocfs2_free_dir_lookup_result(&lookup); |
495 | ||
ccd979bd MF |
496 | if (inode_ac) |
497 | ocfs2_free_alloc_context(inode_ac); | |
498 | ||
499 | if (data_ac) | |
500 | ocfs2_free_alloc_context(data_ac); | |
501 | ||
9b7895ef MF |
502 | if (meta_ac) |
503 | ocfs2_free_alloc_context(meta_ac); | |
534eaddd | 504 | |
062d3403 LD |
505 | /* |
506 | * We should call iput after the i_mutex of the bitmap been | |
507 | * unlocked in ocfs2_free_alloc_context, or the | |
508 | * ocfs2_delete_inode will mutex_lock again. | |
509 | */ | |
510 | if ((status < 0) && inode) { | |
595297a8 | 511 | if (dl) |
512 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
513 | ||
062d3403 LD |
514 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
515 | clear_nlink(inode); | |
516 | iput(inode); | |
517 | } | |
518 | ||
c1e8d35e TM |
519 | if (status) |
520 | mlog_errno(status); | |
ccd979bd MF |
521 | |
522 | return status; | |
523 | } | |
524 | ||
021960ca MF |
525 | static int __ocfs2_mknod_locked(struct inode *dir, |
526 | struct inode *inode, | |
527 | dev_t dev, | |
528 | struct buffer_head **new_fe_bh, | |
529 | struct buffer_head *parent_fe_bh, | |
530 | handle_t *handle, | |
531 | struct ocfs2_alloc_context *inode_ac, | |
532 | u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit) | |
ccd979bd MF |
533 | { |
534 | int status = 0; | |
021960ca | 535 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
ccd979bd MF |
536 | struct ocfs2_dinode *fe = NULL; |
537 | struct ocfs2_extent_list *fel; | |
9b7895ef | 538 | u16 feat; |
2931cdcb | 539 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
ccd979bd | 540 | |
ccd979bd | 541 | *new_fe_bh = NULL; |
ccd979bd | 542 | |
ccd979bd MF |
543 | /* populate as many fields early on as possible - many of |
544 | * these are used by the support functions here and in | |
545 | * callers. */ | |
546 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
547 | OCFS2_I(inode)->ip_blkno = fe_blkno; | |
ccd979bd MF |
548 | spin_lock(&osb->osb_lock); |
549 | inode->i_generation = osb->s_next_generation++; | |
550 | spin_unlock(&osb->osb_lock); | |
551 | ||
552 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
553 | if (!*new_fe_bh) { | |
7391a294 | 554 | status = -ENOMEM; |
ccd979bd MF |
555 | mlog_errno(status); |
556 | goto leave; | |
557 | } | |
8cb471e8 | 558 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
ccd979bd | 559 | |
0cf2f763 JB |
560 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
561 | *new_fe_bh, | |
13723d00 | 562 | OCFS2_JOURNAL_ACCESS_CREATE); |
ccd979bd MF |
563 | if (status < 0) { |
564 | mlog_errno(status); | |
565 | goto leave; | |
566 | } | |
567 | ||
568 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
569 | memset(fe, 0, osb->sb->s_blocksize); | |
570 | ||
571 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
572 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
573 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
2b6cb576 | 574 | fe->i_suballoc_loc = cpu_to_le64(suballoc_loc); |
ccd979bd | 575 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); |
4d0ddb2c | 576 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
2c034176 EB |
577 | fe->i_uid = cpu_to_le32(i_uid_read(inode)); |
578 | fe->i_gid = cpu_to_le32(i_gid_read(inode)); | |
f5d36202 TY |
579 | fe->i_mode = cpu_to_le16(inode->i_mode); |
580 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 581 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
198a1ca3 MF |
582 | |
583 | ocfs2_set_links_count(fe, inode->i_nlink); | |
ccd979bd MF |
584 | |
585 | fe->i_last_eb_blk = 0; | |
586 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
13eb9887 | 587 | fe->i_flags |= cpu_to_le32(OCFS2_VALID_FL); |
ccd979bd MF |
588 | fe->i_atime = fe->i_ctime = fe->i_mtime = |
589 | cpu_to_le64(CURRENT_TIME.tv_sec); | |
590 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = | |
591 | cpu_to_le32(CURRENT_TIME.tv_nsec); | |
592 | fe->i_dtime = 0; | |
593 | ||
5b6a3a2b | 594 | /* |
9b7895ef MF |
595 | * If supported, directories start with inline data. If inline |
596 | * isn't supported, but indexing is, we start them as indexed. | |
5b6a3a2b | 597 | */ |
9b7895ef | 598 | feat = le16_to_cpu(fe->i_dyn_features); |
f5d36202 | 599 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
600 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
601 | ||
d9ae49d6 TY |
602 | fe->id2.i_data.id_count = cpu_to_le16( |
603 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); | |
5b6a3a2b MF |
604 | } else { |
605 | fel = &fe->id2.i_list; | |
606 | fel->l_tree_depth = 0; | |
607 | fel->l_next_free_rec = 0; | |
608 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
609 | } | |
ccd979bd | 610 | |
ec20cec7 | 611 | ocfs2_journal_dirty(handle, *new_fe_bh); |
ccd979bd | 612 | |
b657c95c | 613 | ocfs2_populate_inode(inode, fe, 1); |
0cf2f763 | 614 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
c271c5c2 SM |
615 | if (!ocfs2_mount_local(osb)) { |
616 | status = ocfs2_create_new_inode_locks(inode); | |
617 | if (status < 0) | |
618 | mlog_errno(status); | |
619 | } | |
ccd979bd | 620 | |
2931cdcb DW |
621 | oi->i_sync_tid = handle->h_transaction->t_tid; |
622 | oi->i_datasync_tid = handle->h_transaction->t_tid; | |
623 | ||
ccd979bd MF |
624 | leave: |
625 | if (status < 0) { | |
626 | if (*new_fe_bh) { | |
627 | brelse(*new_fe_bh); | |
628 | *new_fe_bh = NULL; | |
629 | } | |
ccd979bd MF |
630 | } |
631 | ||
c1e8d35e TM |
632 | if (status) |
633 | mlog_errno(status); | |
ccd979bd MF |
634 | return status; |
635 | } | |
636 | ||
021960ca MF |
637 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
638 | struct inode *dir, | |
639 | struct inode *inode, | |
640 | dev_t dev, | |
641 | struct buffer_head **new_fe_bh, | |
642 | struct buffer_head *parent_fe_bh, | |
643 | handle_t *handle, | |
644 | struct ocfs2_alloc_context *inode_ac) | |
645 | { | |
646 | int status = 0; | |
647 | u64 suballoc_loc, fe_blkno = 0; | |
648 | u16 suballoc_bit; | |
649 | ||
650 | *new_fe_bh = NULL; | |
651 | ||
652 | status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh, | |
653 | inode_ac, &suballoc_loc, | |
654 | &suballoc_bit, &fe_blkno); | |
655 | if (status < 0) { | |
656 | mlog_errno(status); | |
657 | return status; | |
658 | } | |
659 | ||
660 | return __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh, | |
661 | parent_fe_bh, handle, inode_ac, | |
662 | fe_blkno, suballoc_loc, suballoc_bit); | |
663 | } | |
664 | ||
ccd979bd MF |
665 | static int ocfs2_mkdir(struct inode *dir, |
666 | struct dentry *dentry, | |
18bb1db3 | 667 | umode_t mode) |
ccd979bd MF |
668 | { |
669 | int ret; | |
670 | ||
8990e44a TM |
671 | trace_ocfs2_mkdir(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
672 | OCFS2_I(dir)->ip_blkno, mode); | |
ccd979bd | 673 | ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0); |
c1e8d35e TM |
674 | if (ret) |
675 | mlog_errno(ret); | |
ccd979bd MF |
676 | |
677 | return ret; | |
678 | } | |
679 | ||
680 | static int ocfs2_create(struct inode *dir, | |
681 | struct dentry *dentry, | |
4acdaf27 | 682 | umode_t mode, |
ebfc3b49 | 683 | bool excl) |
ccd979bd MF |
684 | { |
685 | int ret; | |
686 | ||
8990e44a TM |
687 | trace_ocfs2_create(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
688 | (unsigned long long)OCFS2_I(dir)->ip_blkno, mode); | |
ccd979bd | 689 | ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0); |
c1e8d35e TM |
690 | if (ret) |
691 | mlog_errno(ret); | |
ccd979bd MF |
692 | |
693 | return ret; | |
694 | } | |
695 | ||
696 | static int ocfs2_link(struct dentry *old_dentry, | |
697 | struct inode *dir, | |
698 | struct dentry *dentry) | |
699 | { | |
1fabe148 | 700 | handle_t *handle; |
2b0143b5 DH |
701 | struct inode *inode = d_inode(old_dentry); |
702 | struct inode *old_dir = d_inode(old_dentry->d_parent); | |
ccd979bd MF |
703 | int err; |
704 | struct buffer_head *fe_bh = NULL; | |
53dc20b9 | 705 | struct buffer_head *old_dir_bh = NULL; |
ccd979bd | 706 | struct buffer_head *parent_fe_bh = NULL; |
ccd979bd MF |
707 | struct ocfs2_dinode *fe = NULL; |
708 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
4a12ca3a | 709 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 | 710 | sigset_t oldset; |
0e048316 | 711 | u64 old_de_ino; |
ccd979bd | 712 | |
8990e44a TM |
713 | trace_ocfs2_link((unsigned long long)OCFS2_I(inode)->ip_blkno, |
714 | old_dentry->d_name.len, old_dentry->d_name.name, | |
715 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 716 | |
123a9643 MF |
717 | if (S_ISDIR(inode->i_mode)) |
718 | return -EPERM; | |
ccd979bd | 719 | |
9c89fe0a JK |
720 | err = dquot_initialize(dir); |
721 | if (err) { | |
722 | mlog_errno(err); | |
723 | return err; | |
724 | } | |
907f4554 | 725 | |
53dc20b9 X |
726 | err = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
727 | &parent_fe_bh, dir, 0); | |
ccd979bd MF |
728 | if (err < 0) { |
729 | if (err != -ENOENT) | |
730 | mlog_errno(err); | |
123a9643 | 731 | return err; |
ccd979bd MF |
732 | } |
733 | ||
53dc20b9 X |
734 | /* make sure both dirs have bhs |
735 | * get an extra ref on old_dir_bh if old==new */ | |
736 | if (!parent_fe_bh) { | |
737 | if (old_dir_bh) { | |
738 | parent_fe_bh = old_dir_bh; | |
739 | get_bh(parent_fe_bh); | |
740 | } else { | |
741 | mlog(ML_ERROR, "%s: no old_dir_bh!\n", osb->uuid_str); | |
742 | err = -EIO; | |
743 | goto out; | |
744 | } | |
745 | } | |
746 | ||
0f62de2c TY |
747 | if (!dir->i_nlink) { |
748 | err = -ENOENT; | |
123a9643 | 749 | goto out; |
0f62de2c TY |
750 | } |
751 | ||
53dc20b9 | 752 | err = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
0e048316 X |
753 | old_dentry->d_name.len, &old_de_ino); |
754 | if (err) { | |
755 | err = -ENOENT; | |
756 | goto out; | |
757 | } | |
758 | ||
759 | /* | |
760 | * Check whether another node removed the source inode while we | |
761 | * were in the vfs. | |
762 | */ | |
763 | if (old_de_ino != OCFS2_I(inode)->ip_blkno) { | |
764 | err = -ENOENT; | |
765 | goto out; | |
766 | } | |
767 | ||
ccd979bd MF |
768 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
769 | dentry->d_name.len); | |
770 | if (err) | |
123a9643 | 771 | goto out; |
ccd979bd MF |
772 | |
773 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
774 | dentry->d_name.name, | |
4a12ca3a | 775 | dentry->d_name.len, &lookup); |
ccd979bd MF |
776 | if (err < 0) { |
777 | mlog_errno(err); | |
123a9643 | 778 | goto out; |
ccd979bd MF |
779 | } |
780 | ||
e63aecb6 | 781 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
782 | if (err < 0) { |
783 | if (err != -ENOENT) | |
784 | mlog_errno(err); | |
123a9643 | 785 | goto out; |
ccd979bd MF |
786 | } |
787 | ||
788 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
198a1ca3 | 789 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
ccd979bd | 790 | err = -EMLINK; |
123a9643 | 791 | goto out_unlock_inode; |
ccd979bd MF |
792 | } |
793 | ||
a90714c1 | 794 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
795 | if (IS_ERR(handle)) { |
796 | err = PTR_ERR(handle); | |
797 | handle = NULL; | |
798 | mlog_errno(err); | |
123a9643 | 799 | goto out_unlock_inode; |
ccd979bd MF |
800 | } |
801 | ||
547ba7c8 JB |
802 | /* Starting to change things, restart is no longer possible. */ |
803 | ocfs2_block_signals(&oldset); | |
804 | ||
0cf2f763 | 805 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 806 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
807 | if (err < 0) { |
808 | mlog_errno(err); | |
123a9643 | 809 | goto out_commit; |
ccd979bd MF |
810 | } |
811 | ||
d8c76e6f | 812 | inc_nlink(inode); |
ccd979bd | 813 | inode->i_ctime = CURRENT_TIME; |
198a1ca3 | 814 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
815 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
816 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
ec20cec7 | 817 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd MF |
818 | |
819 | err = ocfs2_add_entry(handle, dentry, inode, | |
820 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 821 | parent_fe_bh, &lookup); |
ccd979bd | 822 | if (err) { |
198a1ca3 | 823 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 824 | drop_nlink(inode); |
ccd979bd | 825 | mlog_errno(err); |
123a9643 | 826 | goto out_commit; |
ccd979bd MF |
827 | } |
828 | ||
0027dd5b | 829 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
830 | if (err) { |
831 | mlog_errno(err); | |
123a9643 | 832 | goto out_commit; |
379dfe9d MF |
833 | } |
834 | ||
7de9c6ee | 835 | ihold(inode); |
ccd979bd | 836 | d_instantiate(dentry, inode); |
123a9643 MF |
837 | |
838 | out_commit: | |
02dc1af4 | 839 | ocfs2_commit_trans(osb, handle); |
547ba7c8 | 840 | ocfs2_unblock_signals(&oldset); |
123a9643 | 841 | out_unlock_inode: |
e63aecb6 | 842 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
843 | |
844 | out: | |
53dc20b9 | 845 | ocfs2_double_unlock(old_dir, dir); |
123a9643 | 846 | |
a81cb88b MF |
847 | brelse(fe_bh); |
848 | brelse(parent_fe_bh); | |
53dc20b9 | 849 | brelse(old_dir_bh); |
ccd979bd | 850 | |
4a12ca3a MF |
851 | ocfs2_free_dir_lookup_result(&lookup); |
852 | ||
c1e8d35e TM |
853 | if (err) |
854 | mlog_errno(err); | |
ccd979bd MF |
855 | |
856 | return err; | |
857 | } | |
858 | ||
379dfe9d MF |
859 | /* |
860 | * Takes and drops an exclusive lock on the given dentry. This will | |
861 | * force other nodes to drop it. | |
862 | */ | |
863 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
864 | { | |
865 | int ret; | |
866 | ||
867 | ret = ocfs2_dentry_lock(dentry, 1); | |
868 | if (ret) | |
869 | mlog_errno(ret); | |
870 | else | |
871 | ocfs2_dentry_unlock(dentry, 1); | |
872 | ||
873 | return ret; | |
874 | } | |
875 | ||
b5a8bb71 | 876 | static inline int ocfs2_inode_is_unlinkable(struct inode *inode) |
17ff7856 MF |
877 | { |
878 | if (S_ISDIR(inode->i_mode)) { | |
879 | if (inode->i_nlink == 2) | |
880 | return 1; | |
881 | return 0; | |
882 | } | |
883 | ||
884 | if (inode->i_nlink == 1) | |
885 | return 1; | |
886 | return 0; | |
887 | } | |
888 | ||
ccd979bd MF |
889 | static int ocfs2_unlink(struct inode *dir, |
890 | struct dentry *dentry) | |
891 | { | |
892 | int status; | |
30a4f5e8 | 893 | int child_locked = 0; |
b5a8bb71 | 894 | bool is_unlinkable = false; |
2b0143b5 | 895 | struct inode *inode = d_inode(dentry); |
5098c27b | 896 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
897 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
898 | u64 blkno; | |
899 | struct ocfs2_dinode *fe = NULL; | |
900 | struct buffer_head *fe_bh = NULL; | |
901 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 902 | handle_t *handle = NULL; |
ccd979bd | 903 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
904 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
905 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd | 906 | |
8990e44a TM |
907 | trace_ocfs2_unlink(dir, dentry, dentry->d_name.len, |
908 | dentry->d_name.name, | |
909 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
910 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 911 | |
9c89fe0a JK |
912 | status = dquot_initialize(dir); |
913 | if (status) { | |
914 | mlog_errno(status); | |
915 | return status; | |
916 | } | |
907f4554 | 917 | |
2b0143b5 | 918 | BUG_ON(d_inode(dentry->d_parent) != dir); |
ccd979bd | 919 | |
8990e44a | 920 | if (inode == osb->root_inode) |
30a4f5e8 | 921 | return -EPERM; |
ccd979bd | 922 | |
cb25797d JK |
923 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
924 | OI_LS_PARENT); | |
ccd979bd MF |
925 | if (status < 0) { |
926 | if (status != -ENOENT) | |
927 | mlog_errno(status); | |
30a4f5e8 | 928 | return status; |
ccd979bd MF |
929 | } |
930 | ||
931 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
932 | dentry->d_name.len, &blkno, dir, |
933 | &lookup); | |
ccd979bd MF |
934 | if (status < 0) { |
935 | if (status != -ENOENT) | |
936 | mlog_errno(status); | |
937 | goto leave; | |
938 | } | |
939 | ||
940 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
941 | status = -ENOENT; | |
942 | ||
8990e44a TM |
943 | trace_ocfs2_unlink_noent( |
944 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
945 | (unsigned long long)blkno, | |
946 | OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
947 | goto leave; |
948 | } | |
949 | ||
e63aecb6 | 950 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
951 | if (status < 0) { |
952 | if (status != -ENOENT) | |
953 | mlog_errno(status); | |
954 | goto leave; | |
955 | } | |
30a4f5e8 | 956 | child_locked = 1; |
ccd979bd MF |
957 | |
958 | if (S_ISDIR(inode->i_mode)) { | |
b80b549c | 959 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
ccd979bd MF |
960 | status = -ENOTEMPTY; |
961 | goto leave; | |
962 | } | |
963 | } | |
964 | ||
379dfe9d | 965 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 966 | if (status < 0) { |
34d024f8 | 967 | /* This remote delete should succeed under all normal |
ccd979bd MF |
968 | * circumstances. */ |
969 | mlog_errno(status); | |
970 | goto leave; | |
971 | } | |
972 | ||
b5a8bb71 | 973 | if (ocfs2_inode_is_unlinkable(inode)) { |
19bd341f TM |
974 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
975 | OCFS2_I(inode)->ip_blkno, | |
06ee5c75 JQ |
976 | orphan_name, &orphan_insert, |
977 | false); | |
ccd979bd MF |
978 | if (status < 0) { |
979 | mlog_errno(status); | |
980 | goto leave; | |
981 | } | |
b5a8bb71 | 982 | is_unlinkable = true; |
ccd979bd MF |
983 | } |
984 | ||
a90714c1 | 985 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
986 | if (IS_ERR(handle)) { |
987 | status = PTR_ERR(handle); | |
988 | handle = NULL; | |
989 | mlog_errno(status); | |
990 | goto leave; | |
991 | } | |
992 | ||
0cf2f763 | 993 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 994 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
995 | if (status < 0) { |
996 | mlog_errno(status); | |
997 | goto leave; | |
998 | } | |
999 | ||
1000 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
1001 | ||
ccd979bd | 1002 | /* delete the name from the parent dir */ |
4a12ca3a | 1003 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
1004 | if (status < 0) { |
1005 | mlog_errno(status); | |
1006 | goto leave; | |
1007 | } | |
1008 | ||
17ff7856 MF |
1009 | if (S_ISDIR(inode->i_mode)) |
1010 | drop_nlink(inode); | |
1011 | drop_nlink(inode); | |
198a1ca3 | 1012 | ocfs2_set_links_count(fe, inode->i_nlink); |
ec20cec7 | 1013 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd | 1014 | |
592282cf MF |
1015 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; |
1016 | if (S_ISDIR(inode->i_mode)) | |
17ff7856 | 1017 | drop_nlink(dir); |
592282cf MF |
1018 | |
1019 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
1020 | if (status < 0) { | |
1021 | mlog_errno(status); | |
1022 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 1023 | inc_nlink(dir); |
b5a8bb71 YL |
1024 | goto leave; |
1025 | } | |
1026 | ||
1027 | if (is_unlinkable) { | |
1028 | status = ocfs2_orphan_add(osb, handle, inode, fe_bh, | |
06ee5c75 | 1029 | orphan_name, &orphan_insert, orphan_dir, false); |
b5a8bb71 YL |
1030 | if (status < 0) |
1031 | mlog_errno(status); | |
ccd979bd MF |
1032 | } |
1033 | ||
1034 | leave: | |
ccd979bd | 1035 | if (handle) |
02dc1af4 | 1036 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1037 | |
5098c27b MF |
1038 | if (orphan_dir) { |
1039 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1040 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
1041 | mutex_unlock(&orphan_dir->i_mutex); |
1042 | iput(orphan_dir); | |
1043 | } | |
1044 | ||
3cb2ec43 JQ |
1045 | if (child_locked) |
1046 | ocfs2_inode_unlock(inode, 1); | |
1047 | ||
1048 | ocfs2_inode_unlock(dir, 1); | |
1049 | ||
a81cb88b | 1050 | brelse(fe_bh); |
a81cb88b | 1051 | brelse(parent_node_bh); |
4a12ca3a MF |
1052 | |
1053 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1054 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd | 1055 | |
f5b25855 | 1056 | if (status && (status != -ENOTEMPTY) && (status != -ENOENT)) |
c1e8d35e | 1057 | mlog_errno(status); |
ccd979bd MF |
1058 | |
1059 | return status; | |
1060 | } | |
1061 | ||
f7a14f32 YJ |
1062 | static int ocfs2_check_if_ancestor(struct ocfs2_super *osb, |
1063 | u64 src_inode_no, u64 dest_inode_no) | |
1064 | { | |
1065 | int ret = 0, i = 0; | |
1066 | u64 parent_inode_no = 0; | |
1067 | u64 child_inode_no = src_inode_no; | |
1068 | struct inode *child_inode; | |
1069 | ||
1070 | #define MAX_LOOKUP_TIMES 32 | |
1071 | while (1) { | |
1072 | child_inode = ocfs2_iget(osb, child_inode_no, 0, 0); | |
1073 | if (IS_ERR(child_inode)) { | |
1074 | ret = PTR_ERR(child_inode); | |
1075 | break; | |
1076 | } | |
1077 | ||
1078 | ret = ocfs2_inode_lock(child_inode, NULL, 0); | |
1079 | if (ret < 0) { | |
1080 | iput(child_inode); | |
1081 | if (ret != -ENOENT) | |
1082 | mlog_errno(ret); | |
1083 | break; | |
1084 | } | |
1085 | ||
1086 | ret = ocfs2_lookup_ino_from_name(child_inode, "..", 2, | |
1087 | &parent_inode_no); | |
1088 | ocfs2_inode_unlock(child_inode, 0); | |
1089 | iput(child_inode); | |
1090 | if (ret < 0) { | |
1091 | ret = -ENOENT; | |
1092 | break; | |
1093 | } | |
1094 | ||
1095 | if (parent_inode_no == dest_inode_no) { | |
1096 | ret = 1; | |
1097 | break; | |
1098 | } | |
1099 | ||
1100 | if (parent_inode_no == osb->root_inode->i_ino) { | |
1101 | ret = 0; | |
1102 | break; | |
1103 | } | |
1104 | ||
1105 | child_inode_no = parent_inode_no; | |
1106 | ||
1107 | if (++i >= MAX_LOOKUP_TIMES) { | |
1108 | mlog(ML_NOTICE, "max lookup times reached, filesystem " | |
1109 | "may have nested directories, " | |
1110 | "src inode: %llu, dest inode: %llu.\n", | |
1111 | (unsigned long long)src_inode_no, | |
1112 | (unsigned long long)dest_inode_no); | |
1113 | ret = 0; | |
1114 | break; | |
1115 | } | |
1116 | } | |
1117 | ||
1118 | return ret; | |
1119 | } | |
1120 | ||
ccd979bd | 1121 | /* |
53dc20b9 | 1122 | * The only place this should be used is rename and link! |
ccd979bd MF |
1123 | * if they have the same id, then the 1st one is the only one locked. |
1124 | */ | |
1125 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
1126 | struct buffer_head **bh1, |
1127 | struct inode *inode1, | |
1128 | struct buffer_head **bh2, | |
53dc20b9 X |
1129 | struct inode *inode2, |
1130 | int rename) | |
ccd979bd MF |
1131 | { |
1132 | int status; | |
f7a14f32 | 1133 | int inode1_is_ancestor, inode2_is_ancestor; |
ccd979bd MF |
1134 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); |
1135 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
ccd979bd | 1136 | |
8990e44a TM |
1137 | trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno, |
1138 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 1139 | |
ccd979bd MF |
1140 | if (*bh1) |
1141 | *bh1 = NULL; | |
1142 | if (*bh2) | |
1143 | *bh2 = NULL; | |
1144 | ||
f7a14f32 YJ |
1145 | /* we always want to lock the one with the lower lockid first. |
1146 | * and if they are nested, we lock ancestor first */ | |
ccd979bd | 1147 | if (oi1->ip_blkno != oi2->ip_blkno) { |
f7a14f32 YJ |
1148 | inode1_is_ancestor = ocfs2_check_if_ancestor(osb, oi2->ip_blkno, |
1149 | oi1->ip_blkno); | |
1150 | if (inode1_is_ancestor < 0) { | |
1151 | status = inode1_is_ancestor; | |
1152 | goto bail; | |
1153 | } | |
1154 | ||
1155 | inode2_is_ancestor = ocfs2_check_if_ancestor(osb, oi1->ip_blkno, | |
1156 | oi2->ip_blkno); | |
1157 | if (inode2_is_ancestor < 0) { | |
1158 | status = inode2_is_ancestor; | |
1159 | goto bail; | |
1160 | } | |
1161 | ||
1162 | if ((inode1_is_ancestor == 1) || | |
1163 | (oi1->ip_blkno < oi2->ip_blkno && | |
1164 | inode2_is_ancestor == 0)) { | |
ccd979bd | 1165 | /* switch id1 and id2 around */ |
ab1ba021 FF |
1166 | swap(bh2, bh1); |
1167 | swap(inode2, inode1); | |
ccd979bd MF |
1168 | } |
1169 | /* lock id2 */ | |
cb25797d | 1170 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
53dc20b9 | 1171 | rename == 1 ? OI_LS_RENAME1 : OI_LS_PARENT); |
ccd979bd MF |
1172 | if (status < 0) { |
1173 | if (status != -ENOENT) | |
1174 | mlog_errno(status); | |
1175 | goto bail; | |
1176 | } | |
1177 | } | |
8d5596c6 | 1178 | |
ccd979bd | 1179 | /* lock id1 */ |
53dc20b9 X |
1180 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, |
1181 | rename == 1 ? OI_LS_RENAME2 : OI_LS_PARENT); | |
ccd979bd | 1182 | if (status < 0) { |
8d5596c6 MF |
1183 | /* |
1184 | * An error return must mean that no cluster locks | |
1185 | * were held on function exit. | |
1186 | */ | |
1e6d9153 | 1187 | if (oi1->ip_blkno != oi2->ip_blkno) { |
e63aecb6 | 1188 | ocfs2_inode_unlock(inode2, 1); |
1e6d9153 TM |
1189 | brelse(*bh2); |
1190 | *bh2 = NULL; | |
1191 | } | |
8d5596c6 | 1192 | |
ccd979bd MF |
1193 | if (status != -ENOENT) |
1194 | mlog_errno(status); | |
ccd979bd | 1195 | } |
8d5596c6 | 1196 | |
8990e44a TM |
1197 | trace_ocfs2_double_lock_end( |
1198 | (unsigned long long)OCFS2_I(inode1)->ip_blkno, | |
1199 | (unsigned long long)OCFS2_I(inode2)->ip_blkno); | |
1200 | ||
ccd979bd | 1201 | bail: |
c1e8d35e TM |
1202 | if (status) |
1203 | mlog_errno(status); | |
ccd979bd MF |
1204 | return status; |
1205 | } | |
1206 | ||
8d5596c6 MF |
1207 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
1208 | { | |
e63aecb6 | 1209 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
1210 | |
1211 | if (inode1 != inode2) | |
e63aecb6 | 1212 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1213 | } |
1214 | ||
ccd979bd MF |
1215 | static int ocfs2_rename(struct inode *old_dir, |
1216 | struct dentry *old_dentry, | |
1217 | struct inode *new_dir, | |
1218 | struct dentry *new_dentry) | |
1219 | { | |
4a12ca3a MF |
1220 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1221 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
2b0143b5 DH |
1222 | struct inode *old_inode = d_inode(old_dentry); |
1223 | struct inode *new_inode = d_inode(new_dentry); | |
5098c27b | 1224 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1225 | struct ocfs2_dinode *newfe = NULL; |
1226 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
ccd979bd | 1227 | struct buffer_head *newfe_bh = NULL; |
592282cf | 1228 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd | 1229 | struct ocfs2_super *osb = NULL; |
5b6a3a2b | 1230 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1231 | handle_t *handle = NULL; |
ccd979bd MF |
1232 | struct buffer_head *old_dir_bh = NULL; |
1233 | struct buffer_head *new_dir_bh = NULL; | |
847c9db5 | 1234 | u32 old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1235 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1236 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1237 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1238 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1239 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1240 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
5fb1beb0 | 1241 | bool should_add_orphan = false; |
ccd979bd MF |
1242 | |
1243 | /* At some point it might be nice to break this function up a | |
1244 | * bit. */ | |
1245 | ||
8990e44a TM |
1246 | trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry, |
1247 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1248 | new_dentry->d_name.len, new_dentry->d_name.name); | |
ccd979bd | 1249 | |
9c89fe0a JK |
1250 | status = dquot_initialize(old_dir); |
1251 | if (status) { | |
1252 | mlog_errno(status); | |
1253 | goto bail; | |
1254 | } | |
1255 | status = dquot_initialize(new_dir); | |
1256 | if (status) { | |
1257 | mlog_errno(status); | |
1258 | goto bail; | |
1259 | } | |
907f4554 | 1260 | |
ccd979bd MF |
1261 | osb = OCFS2_SB(old_dir->i_sb); |
1262 | ||
1263 | if (new_inode) { | |
1264 | if (!igrab(new_inode)) | |
1265 | BUG(); | |
1266 | } | |
1267 | ||
1b3c3714 | 1268 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1269 | * a/b/c |
1270 | * a/d | |
1271 | * a,b,c, and d are all directories. | |
1272 | * | |
1273 | * from cwd of 'a' on both nodes: | |
1274 | * node1: mv b/c d | |
1275 | * node2: mv d b/c | |
1276 | * | |
1277 | * And that's why, just like the VFS, we need a file system | |
1278 | * rename lock. */ | |
5dabd695 | 1279 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1280 | status = ocfs2_rename_lock(osb); |
1281 | if (status < 0) { | |
1282 | mlog_errno(status); | |
1283 | goto bail; | |
1284 | } | |
1285 | rename_lock = 1; | |
f7a14f32 YJ |
1286 | |
1287 | /* here we cannot guarantee the inodes haven't just been | |
1288 | * changed, so check if they are nested again */ | |
1289 | status = ocfs2_check_if_ancestor(osb, new_dir->i_ino, | |
1290 | old_inode->i_ino); | |
1291 | if (status < 0) { | |
1292 | mlog_errno(status); | |
1293 | goto bail; | |
1294 | } else if (status == 1) { | |
1295 | status = -EPERM; | |
1296 | trace_ocfs2_rename_not_permitted( | |
1297 | (unsigned long long)old_inode->i_ino, | |
1298 | (unsigned long long)new_dir->i_ino); | |
1299 | goto bail; | |
1300 | } | |
ccd979bd MF |
1301 | } |
1302 | ||
ccd979bd | 1303 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 | 1304 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
53dc20b9 | 1305 | &new_dir_bh, new_dir, 1); |
ccd979bd MF |
1306 | if (status < 0) { |
1307 | mlog_errno(status); | |
1308 | goto bail; | |
1309 | } | |
8d5596c6 | 1310 | parents_locked = 1; |
ccd979bd | 1311 | |
928dda1f YJ |
1312 | if (!new_dir->i_nlink) { |
1313 | status = -EACCES; | |
1314 | goto bail; | |
1315 | } | |
1316 | ||
ccd979bd MF |
1317 | /* make sure both dirs have bhs |
1318 | * get an extra ref on old_dir_bh if old==new */ | |
1319 | if (!new_dir_bh) { | |
1320 | if (old_dir_bh) { | |
1321 | new_dir_bh = old_dir_bh; | |
1322 | get_bh(new_dir_bh); | |
1323 | } else { | |
1324 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1325 | status = -EIO; | |
1326 | goto bail; | |
1327 | } | |
1328 | } | |
1329 | ||
379dfe9d | 1330 | /* |
592282cf | 1331 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1332 | * also ensures that the downconvert thread on other nodes |
1333 | * won't have to concurrently downconvert the inode and the | |
1334 | * dentry locks. | |
379dfe9d | 1335 | */ |
cb25797d JK |
1336 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
1337 | OI_LS_PARENT); | |
379dfe9d MF |
1338 | if (status < 0) { |
1339 | if (status != -ENOENT) | |
ccd979bd | 1340 | mlog_errno(status); |
379dfe9d MF |
1341 | goto bail; |
1342 | } | |
8d5596c6 | 1343 | old_child_locked = 1; |
ccd979bd | 1344 | |
379dfe9d MF |
1345 | status = ocfs2_remote_dentry_delete(old_dentry); |
1346 | if (status < 0) { | |
1347 | mlog_errno(status); | |
1348 | goto bail; | |
1349 | } | |
1350 | ||
1351 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1352 | u64 old_inode_parent; |
1353 | ||
4a12ca3a | 1354 | update_dot_dot = 1; |
38760e24 | 1355 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1356 | old_inode, |
1357 | &old_inode_dot_dot_res); | |
38760e24 MF |
1358 | if (status) { |
1359 | status = -EIO; | |
ccd979bd | 1360 | goto bail; |
38760e24 | 1361 | } |
ccd979bd | 1362 | |
38760e24 MF |
1363 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1364 | status = -EIO; | |
ccd979bd | 1365 | goto bail; |
38760e24 MF |
1366 | } |
1367 | ||
1368 | if (!new_inode && new_dir != old_dir && | |
198a1ca3 | 1369 | new_dir->i_nlink >= ocfs2_link_max(osb)) { |
38760e24 | 1370 | status = -EMLINK; |
ccd979bd | 1371 | goto bail; |
38760e24 | 1372 | } |
ccd979bd MF |
1373 | } |
1374 | ||
5b6a3a2b MF |
1375 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1376 | old_dentry->d_name.len, | |
1377 | &old_de_ino); | |
1378 | if (status) { | |
1379 | status = -ENOENT; | |
ccd979bd | 1380 | goto bail; |
5b6a3a2b | 1381 | } |
ccd979bd MF |
1382 | |
1383 | /* | |
1384 | * Check for inode number is _not_ due to possible IO errors. | |
1385 | * We might rmdir the source, keep it as pwd of some process | |
1386 | * and merrily kill the link to whatever was created under the | |
1387 | * same name. Goodbye sticky bit ;-< | |
1388 | */ | |
5b6a3a2b MF |
1389 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1390 | status = -ENOENT; | |
ccd979bd | 1391 | goto bail; |
5b6a3a2b | 1392 | } |
ccd979bd MF |
1393 | |
1394 | /* check if the target already exists (in which case we need | |
1395 | * to delete it */ | |
1396 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1397 | new_dentry->d_name.len, | |
4a12ca3a MF |
1398 | &newfe_blkno, new_dir, |
1399 | &target_lookup_res); | |
ccd979bd MF |
1400 | /* The only error we allow here is -ENOENT because the new |
1401 | * file not existing is perfectly valid. */ | |
1402 | if ((status < 0) && (status != -ENOENT)) { | |
1403 | /* If we cannot find the file specified we should just */ | |
1404 | /* return the error... */ | |
1405 | mlog_errno(status); | |
1406 | goto bail; | |
1407 | } | |
4a12ca3a MF |
1408 | if (status == 0) |
1409 | target_exists = 1; | |
ccd979bd | 1410 | |
4a12ca3a | 1411 | if (!target_exists && new_inode) { |
e325a88f SE |
1412 | /* |
1413 | * Target was unlinked by another node while we were | |
1414 | * waiting to get to ocfs2_rename(). There isn't | |
1415 | * anything we can do here to help the situation, so | |
1416 | * bubble up the appropriate error. | |
1417 | */ | |
1418 | status = -ENOENT; | |
1419 | goto bail; | |
1420 | } | |
ccd979bd MF |
1421 | |
1422 | /* In case we need to overwrite an existing file, we blow it | |
1423 | * away first */ | |
4a12ca3a | 1424 | if (target_exists) { |
ccd979bd MF |
1425 | /* VFS didn't think there existed an inode here, but |
1426 | * someone else in the cluster must have raced our | |
1427 | * rename to create one. Today we error cleanly, in | |
1428 | * the future we should consider calling iget to build | |
1429 | * a new struct inode for this entry. */ | |
1430 | if (!new_inode) { | |
1431 | status = -EACCES; | |
1432 | ||
8990e44a TM |
1433 | trace_ocfs2_rename_target_exists(new_dentry->d_name.len, |
1434 | new_dentry->d_name.name); | |
ccd979bd MF |
1435 | goto bail; |
1436 | } | |
1437 | ||
1438 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1439 | status = -EACCES; | |
1440 | ||
8990e44a | 1441 | trace_ocfs2_rename_disagree( |
b0697053 MF |
1442 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, |
1443 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1444 | OCFS2_I(new_inode)->ip_flags); |
1445 | goto bail; | |
1446 | } | |
1447 | ||
e63aecb6 | 1448 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1449 | if (status < 0) { |
1450 | if (status != -ENOENT) | |
1451 | mlog_errno(status); | |
1452 | goto bail; | |
1453 | } | |
8d5596c6 | 1454 | new_child_locked = 1; |
ccd979bd | 1455 | |
379dfe9d | 1456 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1457 | if (status < 0) { |
1458 | mlog_errno(status); | |
1459 | goto bail; | |
1460 | } | |
1461 | ||
1462 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1463 | ||
8990e44a | 1464 | trace_ocfs2_rename_over_existing( |
b0697053 | 1465 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1466 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1467 | ||
1468 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1469 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
19bd341f | 1470 | OCFS2_I(new_inode)->ip_blkno, |
06ee5c75 JQ |
1471 | orphan_name, &orphan_insert, |
1472 | false); | |
ccd979bd MF |
1473 | if (status < 0) { |
1474 | mlog_errno(status); | |
1475 | goto bail; | |
1476 | } | |
5fb1beb0 | 1477 | should_add_orphan = true; |
ccd979bd MF |
1478 | } |
1479 | } else { | |
2b0143b5 | 1480 | BUG_ON(d_inode(new_dentry->d_parent) != new_dir); |
ccd979bd MF |
1481 | |
1482 | status = ocfs2_check_dir_for_entry(new_dir, | |
1483 | new_dentry->d_name.name, | |
1484 | new_dentry->d_name.len); | |
1485 | if (status) | |
1486 | goto bail; | |
1487 | ||
1488 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1489 | new_dentry->d_name.name, | |
1490 | new_dentry->d_name.len, | |
4a12ca3a | 1491 | &target_insert); |
ccd979bd MF |
1492 | if (status < 0) { |
1493 | mlog_errno(status); | |
1494 | goto bail; | |
1495 | } | |
1496 | } | |
1497 | ||
a90714c1 | 1498 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1499 | if (IS_ERR(handle)) { |
1500 | status = PTR_ERR(handle); | |
1501 | handle = NULL; | |
1502 | mlog_errno(status); | |
1503 | goto bail; | |
1504 | } | |
1505 | ||
4a12ca3a | 1506 | if (target_exists) { |
ccd979bd | 1507 | if (S_ISDIR(new_inode->i_mode)) { |
b80b549c MF |
1508 | if (new_inode->i_nlink != 2 || |
1509 | !ocfs2_empty_dir(new_inode)) { | |
ccd979bd MF |
1510 | status = -ENOTEMPTY; |
1511 | goto bail; | |
1512 | } | |
1513 | } | |
0cf2f763 JB |
1514 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
1515 | newfe_bh, | |
13723d00 | 1516 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1517 | if (status < 0) { |
1518 | mlog_errno(status); | |
1519 | goto bail; | |
1520 | } | |
1521 | ||
ccd979bd | 1522 | /* change the dirent to point to the correct inode */ |
4a12ca3a MF |
1523 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1524 | old_inode); | |
ccd979bd MF |
1525 | if (status < 0) { |
1526 | mlog_errno(status); | |
1527 | goto bail; | |
1528 | } | |
ccd979bd | 1529 | new_dir->i_version++; |
ccd979bd MF |
1530 | |
1531 | if (S_ISDIR(new_inode->i_mode)) | |
198a1ca3 | 1532 | ocfs2_set_links_count(newfe, 0); |
ccd979bd | 1533 | else |
198a1ca3 | 1534 | ocfs2_add_links_count(newfe, -1); |
ec20cec7 | 1535 | ocfs2_journal_dirty(handle, newfe_bh); |
5fb1beb0 | 1536 | if (should_add_orphan) { |
1537 | status = ocfs2_orphan_add(osb, handle, new_inode, | |
1538 | newfe_bh, orphan_name, | |
06ee5c75 | 1539 | &orphan_insert, orphan_dir, false); |
5fb1beb0 | 1540 | if (status < 0) { |
1541 | mlog_errno(status); | |
1542 | goto bail; | |
1543 | } | |
1544 | } | |
ccd979bd MF |
1545 | } else { |
1546 | /* if the name was not found in new_dir, add it now */ | |
1547 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1548 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1549 | new_dir_bh, &target_insert); |
ccd979bd MF |
1550 | } |
1551 | ||
1552 | old_inode->i_ctime = CURRENT_TIME; | |
1553 | mark_inode_dirty(old_inode); | |
480214d7 | 1554 | |
0cf2f763 JB |
1555 | status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), |
1556 | old_inode_bh, | |
13723d00 | 1557 | OCFS2_JOURNAL_ACCESS_WRITE); |
480214d7 SM |
1558 | if (status >= 0) { |
1559 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1560 | ||
1561 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); | |
1562 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); | |
ec20cec7 | 1563 | ocfs2_journal_dirty(handle, old_inode_bh); |
480214d7 SM |
1564 | } else |
1565 | mlog_errno(status); | |
ccd979bd | 1566 | |
5b6a3a2b MF |
1567 | /* |
1568 | * Now that the name has been added to new_dir, remove the old name. | |
1569 | * | |
1570 | * We don't keep any directory entry context around until now | |
1571 | * because the insert might have changed the type of directory | |
1572 | * we're dealing with. | |
1573 | */ | |
4a12ca3a MF |
1574 | status = ocfs2_find_entry(old_dentry->d_name.name, |
1575 | old_dentry->d_name.len, old_dir, | |
1576 | &old_entry_lookup); | |
807a7907 | 1577 | if (status) { |
1578 | if (!is_journal_aborted(osb->journal->j_journal)) { | |
1579 | ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " | |
1580 | "is not deleted.", | |
1581 | new_dentry->d_name.len, new_dentry->d_name.name, | |
1582 | old_dentry->d_name.len, old_dentry->d_name.name); | |
1583 | } | |
5b6a3a2b | 1584 | goto bail; |
807a7907 | 1585 | } |
5b6a3a2b | 1586 | |
4a12ca3a | 1587 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
ccd979bd MF |
1588 | if (status < 0) { |
1589 | mlog_errno(status); | |
807a7907 | 1590 | if (!is_journal_aborted(osb->journal->j_journal)) { |
1591 | ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " | |
1592 | "is not deleted.", | |
1593 | new_dentry->d_name.len, new_dentry->d_name.name, | |
1594 | old_dentry->d_name.len, old_dentry->d_name.name); | |
1595 | } | |
ccd979bd MF |
1596 | goto bail; |
1597 | } | |
1598 | ||
1599 | if (new_inode) { | |
6d6b77f1 | 1600 | drop_nlink(new_inode); |
ccd979bd MF |
1601 | new_inode->i_ctime = CURRENT_TIME; |
1602 | } | |
1603 | old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME; | |
4a12ca3a MF |
1604 | |
1605 | if (update_dot_dot) { | |
1606 | status = ocfs2_update_entry(old_inode, handle, | |
1607 | &old_inode_dot_dot_res, new_dir); | |
6d6b77f1 | 1608 | drop_nlink(old_dir); |
ccd979bd | 1609 | if (new_inode) { |
6d6b77f1 | 1610 | drop_nlink(new_inode); |
ccd979bd | 1611 | } else { |
d8c76e6f | 1612 | inc_nlink(new_dir); |
ccd979bd MF |
1613 | mark_inode_dirty(new_dir); |
1614 | } | |
1615 | } | |
1616 | mark_inode_dirty(old_dir); | |
592282cf MF |
1617 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1618 | if (new_inode) { | |
ccd979bd | 1619 | mark_inode_dirty(new_inode); |
592282cf MF |
1620 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1621 | } | |
ccd979bd | 1622 | |
592282cf MF |
1623 | if (old_dir != new_dir) { |
1624 | /* Keep the same times on both directories.*/ | |
1625 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; | |
1626 | ||
1627 | /* | |
1628 | * This will also pick up the i_nlink change from the | |
1629 | * block above. | |
1630 | */ | |
1631 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1632 | } | |
ccd979bd MF |
1633 | |
1634 | if (old_dir_nlink != old_dir->i_nlink) { | |
1635 | if (!old_dir_bh) { | |
1636 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1637 | "%llu from %d to %d but bh is NULL!\n", |
1638 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1639 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1640 | } else { |
1641 | struct ocfs2_dinode *fe; | |
0cf2f763 JB |
1642 | status = ocfs2_journal_access_di(handle, |
1643 | INODE_CACHE(old_dir), | |
1644 | old_dir_bh, | |
1645 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd | 1646 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
198a1ca3 | 1647 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
ec20cec7 | 1648 | ocfs2_journal_dirty(handle, old_dir_bh); |
ccd979bd MF |
1649 | } |
1650 | } | |
379dfe9d | 1651 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1652 | status = 0; |
1653 | bail: | |
ccd979bd | 1654 | if (handle) |
02dc1af4 | 1655 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1656 | |
5098c27b MF |
1657 | if (orphan_dir) { |
1658 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1659 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
1660 | mutex_unlock(&orphan_dir->i_mutex); |
1661 | iput(orphan_dir); | |
1662 | } | |
1663 | ||
3cb2ec43 JQ |
1664 | if (new_child_locked) |
1665 | ocfs2_inode_unlock(new_inode, 1); | |
1666 | ||
1667 | if (old_child_locked) | |
1668 | ocfs2_inode_unlock(old_inode, 1); | |
1669 | ||
1670 | if (parents_locked) | |
1671 | ocfs2_double_unlock(old_dir, new_dir); | |
1672 | ||
1673 | if (rename_lock) | |
1674 | ocfs2_rename_unlock(osb); | |
1675 | ||
ccd979bd MF |
1676 | if (new_inode) |
1677 | sync_mapping_buffers(old_inode->i_mapping); | |
1678 | ||
1679 | if (new_inode) | |
1680 | iput(new_inode); | |
4a12ca3a MF |
1681 | |
1682 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1683 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1684 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1685 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1686 | ocfs2_free_dir_lookup_result(&target_insert); | |
1687 | ||
a81cb88b MF |
1688 | brelse(newfe_bh); |
1689 | brelse(old_inode_bh); | |
1690 | brelse(old_dir_bh); | |
1691 | brelse(new_dir_bh); | |
ccd979bd | 1692 | |
c1e8d35e TM |
1693 | if (status) |
1694 | mlog_errno(status); | |
ccd979bd MF |
1695 | |
1696 | return status; | |
1697 | } | |
1698 | ||
1699 | /* | |
1700 | * we expect i_size = strlen(symname). Copy symname into the file | |
1701 | * data, including the null terminator. | |
1702 | */ | |
1703 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1704 | handle_t *handle, |
ccd979bd MF |
1705 | struct inode *inode, |
1706 | const char *symname) | |
1707 | { | |
1708 | struct buffer_head **bhs = NULL; | |
1709 | const char *c; | |
1710 | struct super_block *sb = osb->sb; | |
4f902c37 | 1711 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1712 | int virtual, blocks, status, i, bytes_left; |
1713 | ||
1714 | bytes_left = i_size_read(inode) + 1; | |
1715 | /* we can't trust i_blocks because we're actually going to | |
1716 | * write i_size + 1 bytes. */ | |
1717 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1718 | ||
8990e44a TM |
1719 | trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks, |
1720 | i_size_read(inode), blocks); | |
ccd979bd MF |
1721 | |
1722 | /* Sanity check -- make sure we're going to fit. */ | |
1723 | if (bytes_left > | |
1724 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1725 | status = -EIO; | |
1726 | mlog_errno(status); | |
1727 | goto bail; | |
1728 | } | |
1729 | ||
1730 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1731 | if (!bhs) { | |
1732 | status = -ENOMEM; | |
1733 | mlog_errno(status); | |
1734 | goto bail; | |
1735 | } | |
1736 | ||
49cb8d2d MF |
1737 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1738 | NULL); | |
ccd979bd MF |
1739 | if (status < 0) { |
1740 | mlog_errno(status); | |
1741 | goto bail; | |
1742 | } | |
1743 | ||
1744 | /* links can never be larger than one cluster so we know this | |
1745 | * is all going to be contiguous, but do a sanity check | |
1746 | * anyway. */ | |
1747 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1748 | status = -EIO; | |
1749 | mlog_errno(status); | |
1750 | goto bail; | |
1751 | } | |
1752 | ||
1753 | virtual = 0; | |
1754 | while(bytes_left > 0) { | |
1755 | c = &symname[virtual * sb->s_blocksize]; | |
1756 | ||
1757 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1758 | if (!bhs[virtual]) { | |
1759 | status = -ENOMEM; | |
1760 | mlog_errno(status); | |
1761 | goto bail; | |
1762 | } | |
8cb471e8 JB |
1763 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
1764 | bhs[virtual]); | |
ccd979bd | 1765 | |
0cf2f763 JB |
1766 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
1767 | bhs[virtual], | |
ccd979bd MF |
1768 | OCFS2_JOURNAL_ACCESS_CREATE); |
1769 | if (status < 0) { | |
1770 | mlog_errno(status); | |
1771 | goto bail; | |
1772 | } | |
1773 | ||
1774 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1775 | ||
1776 | memcpy(bhs[virtual]->b_data, c, | |
1777 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1778 | bytes_left); | |
1779 | ||
ec20cec7 | 1780 | ocfs2_journal_dirty(handle, bhs[virtual]); |
ccd979bd MF |
1781 | |
1782 | virtual++; | |
1783 | p_blkno++; | |
1784 | bytes_left -= sb->s_blocksize; | |
1785 | } | |
1786 | ||
1787 | status = 0; | |
1788 | bail: | |
1789 | ||
1790 | if (bhs) { | |
1791 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1792 | brelse(bhs[i]); |
ccd979bd MF |
1793 | kfree(bhs); |
1794 | } | |
1795 | ||
c1e8d35e TM |
1796 | if (status) |
1797 | mlog_errno(status); | |
ccd979bd MF |
1798 | return status; |
1799 | } | |
1800 | ||
1801 | static int ocfs2_symlink(struct inode *dir, | |
1802 | struct dentry *dentry, | |
1803 | const char *symname) | |
1804 | { | |
1805 | int status, l, credits; | |
1806 | u64 newsize; | |
1807 | struct ocfs2_super *osb = NULL; | |
1808 | struct inode *inode = NULL; | |
1809 | struct super_block *sb; | |
1810 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1811 | struct buffer_head *parent_fe_bh = NULL; |
1812 | struct ocfs2_dinode *fe = NULL; | |
1813 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1814 | handle_t *handle = NULL; |
ccd979bd MF |
1815 | struct ocfs2_alloc_context *inode_ac = NULL; |
1816 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1817 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1818 | int want_clusters = 0; | |
1819 | int xattr_credits = 0; | |
1820 | struct ocfs2_security_xattr_info si = { | |
1821 | .enable = 1, | |
1822 | }; | |
a90714c1 | 1823 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1824 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
1825 | sigset_t oldset; |
1826 | int did_block_signals = 0; | |
595297a8 | 1827 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 1828 | |
8990e44a TM |
1829 | trace_ocfs2_symlink_begin(dir, dentry, symname, |
1830 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 1831 | |
9c89fe0a JK |
1832 | status = dquot_initialize(dir); |
1833 | if (status) { | |
1834 | mlog_errno(status); | |
1835 | goto bail; | |
1836 | } | |
907f4554 | 1837 | |
ccd979bd MF |
1838 | sb = dir->i_sb; |
1839 | osb = OCFS2_SB(sb); | |
1840 | ||
1841 | l = strlen(symname) + 1; | |
1842 | ||
1843 | credits = ocfs2_calc_symlink_credits(sb); | |
1844 | ||
ccd979bd | 1845 | /* lock the parent directory */ |
e63aecb6 | 1846 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1847 | if (status < 0) { |
1848 | if (status != -ENOENT) | |
1849 | mlog_errno(status); | |
6d8fc40e | 1850 | return status; |
ccd979bd MF |
1851 | } |
1852 | ||
1853 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
198a1ca3 | 1854 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
1855 | /* can't make a file in a deleted directory. */ |
1856 | status = -ENOENT; | |
1857 | goto bail; | |
1858 | } | |
1859 | ||
1860 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1861 | dentry->d_name.len); | |
1862 | if (status) | |
1863 | goto bail; | |
1864 | ||
1865 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1866 | dentry->d_name.name, | |
4a12ca3a | 1867 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1868 | if (status < 0) { |
1869 | mlog_errno(status); | |
1870 | goto bail; | |
1871 | } | |
1872 | ||
da5cbf2f | 1873 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1874 | if (status < 0) { |
1875 | if (status != -ENOSPC) | |
1876 | mlog_errno(status); | |
1877 | goto bail; | |
1878 | } | |
1879 | ||
f5d36202 | 1880 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
9c89fe0a JK |
1881 | if (IS_ERR(inode)) { |
1882 | status = PTR_ERR(inode); | |
1883 | inode = NULL; | |
f5d36202 TY |
1884 | mlog_errno(status); |
1885 | goto bail; | |
1886 | } | |
1887 | ||
534eaddd | 1888 | /* get security xattr */ |
2a7dba39 | 1889 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
1890 | if (status) { |
1891 | if (status == -EOPNOTSUPP) | |
1892 | si.enable = 0; | |
1893 | else { | |
1894 | mlog_errno(status); | |
1895 | goto bail; | |
1896 | } | |
1897 | } | |
1898 | ||
1899 | /* calculate meta data/clusters for setting security xattr */ | |
1900 | if (si.enable) { | |
1901 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1902 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1903 | if (status < 0) { |
534eaddd | 1904 | mlog_errno(status); |
ccd979bd MF |
1905 | goto bail; |
1906 | } | |
1907 | } | |
1908 | ||
534eaddd TY |
1909 | /* don't reserve bitmap space for fast symlinks. */ |
1910 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1911 | want_clusters += 1; | |
1912 | ||
1913 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1914 | if (status < 0) { | |
1915 | if (status != -ENOSPC) | |
1916 | mlog_errno(status); | |
1917 | goto bail; | |
1918 | } | |
1919 | ||
1920 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1921 | if (IS_ERR(handle)) { |
1922 | status = PTR_ERR(handle); | |
1923 | handle = NULL; | |
1924 | mlog_errno(status); | |
1925 | goto bail; | |
1926 | } | |
1927 | ||
547ba7c8 JB |
1928 | /* Starting to change things, restart is no longer possible. */ |
1929 | ocfs2_block_signals(&oldset); | |
1930 | did_block_signals = 1; | |
1931 | ||
63936dda CH |
1932 | status = dquot_alloc_inode(inode); |
1933 | if (status) | |
a90714c1 | 1934 | goto bail; |
a90714c1 JK |
1935 | did_quota_inode = 1; |
1936 | ||
8990e44a TM |
1937 | trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len, |
1938 | dentry->d_name.name, | |
1939 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
1940 | inode->i_mode); | |
19bd341f TM |
1941 | |
1942 | status = ocfs2_mknod_locked(osb, dir, inode, | |
f5d36202 TY |
1943 | 0, &new_fe_bh, parent_fe_bh, handle, |
1944 | inode_ac); | |
ccd979bd MF |
1945 | if (status < 0) { |
1946 | mlog_errno(status); | |
1947 | goto bail; | |
1948 | } | |
1949 | ||
1950 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1951 | inode->i_rdev = 0; | |
1952 | newsize = l - 1; | |
ea022dfb | 1953 | inode->i_op = &ocfs2_symlink_inode_operations; |
ccd979bd | 1954 | if (l > ocfs2_fast_symlink_chars(sb)) { |
dcd0538f MF |
1955 | u32 offset = 0; |
1956 | ||
5dd4056d CH |
1957 | status = dquot_alloc_space_nodirty(inode, |
1958 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1959 | if (status) | |
a90714c1 | 1960 | goto bail; |
a90714c1 | 1961 | did_quota = 1; |
ea022dfb | 1962 | inode->i_mapping->a_ops = &ocfs2_aops; |
0eb8d47e TM |
1963 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1964 | new_fe_bh, | |
1965 | handle, data_ac, NULL, | |
1966 | NULL); | |
ccd979bd MF |
1967 | if (status < 0) { |
1968 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1969 | mlog(ML_ERROR, |
1970 | "Failed to extend file to %llu\n", | |
1971 | (unsigned long long)newsize); | |
ccd979bd MF |
1972 | mlog_errno(status); |
1973 | status = -ENOSPC; | |
1974 | } | |
1975 | goto bail; | |
1976 | } | |
1977 | i_size_write(inode, newsize); | |
8110b073 | 1978 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd | 1979 | } else { |
ea022dfb | 1980 | inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops; |
ccd979bd MF |
1981 | memcpy((char *) fe->id2.i_symlink, symname, l); |
1982 | i_size_write(inode, newsize); | |
1983 | inode->i_blocks = 0; | |
1984 | } | |
1985 | ||
1986 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1987 | if (status < 0) { | |
1988 | mlog_errno(status); | |
1989 | goto bail; | |
1990 | } | |
1991 | ||
1992 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
1993 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
1994 | symname); | |
1995 | if (status < 0) { | |
1996 | mlog_errno(status); | |
1997 | goto bail; | |
1998 | } | |
1999 | } | |
2000 | ||
534eaddd TY |
2001 | if (si.enable) { |
2002 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
2003 | xattr_ac, data_ac); | |
2004 | if (status < 0) { | |
2005 | mlog_errno(status); | |
2006 | goto bail; | |
2007 | } | |
2008 | } | |
2009 | ||
a9743fcd MF |
2010 | /* |
2011 | * Do this before adding the entry to the directory. We add | |
2012 | * also set d_op after success so that ->d_iput() will cleanup | |
2013 | * the dentry lock even if ocfs2_add_entry() fails below. | |
2014 | */ | |
2015 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); | |
2016 | if (status) { | |
ccd979bd MF |
2017 | mlog_errno(status); |
2018 | goto bail; | |
2019 | } | |
2020 | ||
595297a8 | 2021 | dl = dentry->d_fsdata; |
2022 | ||
a9743fcd MF |
2023 | status = ocfs2_add_entry(handle, dentry, inode, |
2024 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
2025 | &lookup); | |
2026 | if (status < 0) { | |
379dfe9d MF |
2027 | mlog_errno(status); |
2028 | goto bail; | |
2029 | } | |
2030 | ||
ccd979bd | 2031 | insert_inode_hash(inode); |
ccd979bd MF |
2032 | d_instantiate(dentry, inode); |
2033 | bail: | |
a90714c1 | 2034 | if (status < 0 && did_quota) |
5dd4056d | 2035 | dquot_free_space_nodirty(inode, |
a90714c1 JK |
2036 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
2037 | if (status < 0 && did_quota_inode) | |
63936dda | 2038 | dquot_free_inode(inode); |
ccd979bd | 2039 | if (handle) |
02dc1af4 | 2040 | ocfs2_commit_trans(osb, handle); |
6d8fc40e | 2041 | |
e63aecb6 | 2042 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
2043 | if (did_block_signals) |
2044 | ocfs2_unblock_signals(&oldset); | |
6d8fc40e | 2045 | |
a81cb88b MF |
2046 | brelse(new_fe_bh); |
2047 | brelse(parent_fe_bh); | |
534eaddd | 2048 | kfree(si.value); |
4a12ca3a | 2049 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
2050 | if (inode_ac) |
2051 | ocfs2_free_alloc_context(inode_ac); | |
2052 | if (data_ac) | |
2053 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
2054 | if (xattr_ac) |
2055 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 | 2056 | if ((status < 0) && inode) { |
595297a8 | 2057 | if (dl) |
2058 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
2059 | ||
ab41fdc8 | 2060 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
f5d36202 | 2061 | clear_nlink(inode); |
ccd979bd | 2062 | iput(inode); |
f5d36202 | 2063 | } |
ccd979bd | 2064 | |
c1e8d35e TM |
2065 | if (status) |
2066 | mlog_errno(status); | |
ccd979bd MF |
2067 | |
2068 | return status; | |
2069 | } | |
2070 | ||
ccd979bd MF |
2071 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
2072 | { | |
2073 | int status, namelen; | |
2074 | ||
b0697053 MF |
2075 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
2076 | (long long)blkno); | |
ccd979bd MF |
2077 | if (namelen <= 0) { |
2078 | if (namelen) | |
2079 | status = namelen; | |
2080 | else | |
2081 | status = -EINVAL; | |
2082 | mlog_errno(status); | |
2083 | goto bail; | |
2084 | } | |
2085 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
2086 | status = -EINVAL; | |
2087 | mlog_errno(status); | |
2088 | goto bail; | |
2089 | } | |
2090 | ||
8990e44a | 2091 | trace_ocfs2_blkno_stringify(blkno, name, namelen); |
ccd979bd MF |
2092 | |
2093 | status = 0; | |
2094 | bail: | |
c1e8d35e TM |
2095 | if (status < 0) |
2096 | mlog_errno(status); | |
ccd979bd MF |
2097 | return status; |
2098 | } | |
2099 | ||
dd43bcde MF |
2100 | static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb, |
2101 | struct inode **ret_orphan_dir, | |
2102 | struct buffer_head **ret_orphan_dir_bh) | |
ccd979bd | 2103 | { |
5098c27b | 2104 | struct inode *orphan_dir_inode; |
ccd979bd | 2105 | struct buffer_head *orphan_dir_bh = NULL; |
dd43bcde | 2106 | int ret = 0; |
ccd979bd MF |
2107 | |
2108 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2109 | ORPHAN_DIR_SYSTEM_INODE, | |
2110 | osb->slot_num); | |
2111 | if (!orphan_dir_inode) { | |
dd43bcde MF |
2112 | ret = -ENOENT; |
2113 | mlog_errno(ret); | |
2114 | return ret; | |
ccd979bd MF |
2115 | } |
2116 | ||
5098c27b MF |
2117 | mutex_lock(&orphan_dir_inode->i_mutex); |
2118 | ||
dd43bcde MF |
2119 | ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2120 | if (ret < 0) { | |
2121 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2122 | iput(orphan_dir_inode); | |
2123 | ||
2124 | mlog_errno(ret); | |
2125 | return ret; | |
ccd979bd MF |
2126 | } |
2127 | ||
dd43bcde MF |
2128 | *ret_orphan_dir = orphan_dir_inode; |
2129 | *ret_orphan_dir_bh = orphan_dir_bh; | |
5098c27b | 2130 | |
dd43bcde MF |
2131 | return 0; |
2132 | } | |
2133 | ||
2134 | static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode, | |
2135 | struct buffer_head *orphan_dir_bh, | |
2136 | u64 blkno, | |
2137 | char *name, | |
06ee5c75 JQ |
2138 | struct ocfs2_dir_lookup_result *lookup, |
2139 | bool dio) | |
dd43bcde MF |
2140 | { |
2141 | int ret; | |
2142 | struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb); | |
06ee5c75 JQ |
2143 | int namelen = dio ? |
2144 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2145 | OCFS2_ORPHAN_NAMELEN; | |
2146 | ||
2147 | if (dio) { | |
2148 | ret = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2149 | OCFS2_DIO_ORPHAN_PREFIX); | |
2150 | if (ret != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2151 | ret = -EINVAL; | |
2152 | mlog_errno(ret); | |
2153 | return ret; | |
2154 | } | |
dd43bcde | 2155 | |
06ee5c75 JQ |
2156 | ret = ocfs2_blkno_stringify(blkno, |
2157 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2158 | } else | |
2159 | ret = ocfs2_blkno_stringify(blkno, name); | |
dd43bcde MF |
2160 | if (ret < 0) { |
2161 | mlog_errno(ret); | |
2162 | return ret; | |
2163 | } | |
2164 | ||
2165 | ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
2166 | orphan_dir_bh, name, | |
06ee5c75 | 2167 | namelen, lookup); |
dd43bcde MF |
2168 | if (ret < 0) { |
2169 | mlog_errno(ret); | |
2170 | return ret; | |
2171 | } | |
2172 | ||
2173 | return 0; | |
2174 | } | |
2175 | ||
2176 | /** | |
2177 | * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for | |
2178 | * insertion of an orphan. | |
2179 | * @osb: ocfs2 file system | |
2180 | * @ret_orphan_dir: Orphan dir inode - returned locked! | |
2181 | * @blkno: Actual block number of the inode to be inserted into orphan dir. | |
2182 | * @lookup: dir lookup result, to be passed back into functions like | |
2183 | * ocfs2_orphan_add | |
2184 | * | |
2185 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2186 | * fields will be populated. | |
2187 | * | |
2188 | * Returns non-zero on failure. | |
2189 | */ | |
2190 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
2191 | struct inode **ret_orphan_dir, | |
2192 | u64 blkno, | |
2193 | char *name, | |
06ee5c75 JQ |
2194 | struct ocfs2_dir_lookup_result *lookup, |
2195 | bool dio) | |
dd43bcde MF |
2196 | { |
2197 | struct inode *orphan_dir_inode = NULL; | |
2198 | struct buffer_head *orphan_dir_bh = NULL; | |
2199 | int ret = 0; | |
2200 | ||
2201 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode, | |
2202 | &orphan_dir_bh); | |
2203 | if (ret < 0) { | |
2204 | mlog_errno(ret); | |
2205 | return ret; | |
2206 | } | |
2207 | ||
2208 | ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh, | |
06ee5c75 | 2209 | blkno, name, lookup, dio); |
dd43bcde MF |
2210 | if (ret < 0) { |
2211 | mlog_errno(ret); | |
2212 | goto out; | |
ccd979bd MF |
2213 | } |
2214 | ||
5098c27b MF |
2215 | *ret_orphan_dir = orphan_dir_inode; |
2216 | ||
dd43bcde MF |
2217 | out: |
2218 | brelse(orphan_dir_bh); | |
2219 | ||
2220 | if (ret) { | |
2221 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5098c27b | 2222 | mutex_unlock(&orphan_dir_inode->i_mutex); |
ccd979bd | 2223 | iput(orphan_dir_inode); |
5098c27b | 2224 | } |
ccd979bd | 2225 | |
c1e8d35e TM |
2226 | if (ret) |
2227 | mlog_errno(ret); | |
dd43bcde | 2228 | return ret; |
ccd979bd MF |
2229 | } |
2230 | ||
2231 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 2232 | handle_t *handle, |
ccd979bd | 2233 | struct inode *inode, |
3939fda4 | 2234 | struct buffer_head *fe_bh, |
ccd979bd | 2235 | char *name, |
4a12ca3a | 2236 | struct ocfs2_dir_lookup_result *lookup, |
06ee5c75 JQ |
2237 | struct inode *orphan_dir_inode, |
2238 | bool dio) | |
ccd979bd | 2239 | { |
ccd979bd MF |
2240 | struct buffer_head *orphan_dir_bh = NULL; |
2241 | int status = 0; | |
2242 | struct ocfs2_dinode *orphan_fe; | |
3939fda4 | 2243 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; |
06ee5c75 JQ |
2244 | int namelen = dio ? |
2245 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2246 | OCFS2_ORPHAN_NAMELEN; | |
ccd979bd | 2247 | |
8990e44a TM |
2248 | trace_ocfs2_orphan_add_begin( |
2249 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 2250 | |
b657c95c | 2251 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
2252 | if (status < 0) { |
2253 | mlog_errno(status); | |
2254 | goto leave; | |
2255 | } | |
2256 | ||
0cf2f763 JB |
2257 | status = ocfs2_journal_access_di(handle, |
2258 | INODE_CACHE(orphan_dir_inode), | |
2259 | orphan_dir_bh, | |
13723d00 | 2260 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2261 | if (status < 0) { |
2262 | mlog_errno(status); | |
2263 | goto leave; | |
2264 | } | |
2265 | ||
ea45466a YL |
2266 | /* |
2267 | * We're going to journal the change of i_flags and i_orphaned_slot. | |
2268 | * It's safe anyway, though some callers may duplicate the journaling. | |
2269 | * Journaling within the func just make the logic look more | |
2270 | * straightforward. | |
2271 | */ | |
2272 | status = ocfs2_journal_access_di(handle, | |
2273 | INODE_CACHE(inode), | |
2274 | fe_bh, | |
2275 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2276 | if (status < 0) { | |
2277 | mlog_errno(status); | |
2278 | goto leave; | |
2279 | } | |
2280 | ||
ccd979bd MF |
2281 | /* we're a cluster, and nlink can change on disk from |
2282 | * underneath us... */ | |
2283 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2284 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2285 | ocfs2_add_links_count(orphan_fe, 1); |
bfe86848 | 2286 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2287 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2288 | |
2289 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
06ee5c75 | 2290 | namelen, inode, |
ccd979bd | 2291 | OCFS2_I(inode)->ip_blkno, |
4a12ca3a | 2292 | orphan_dir_bh, lookup); |
ccd979bd MF |
2293 | if (status < 0) { |
2294 | mlog_errno(status); | |
ea45466a | 2295 | goto rollback; |
3939fda4 TY |
2296 | } |
2297 | ||
06ee5c75 JQ |
2298 | if (dio) { |
2299 | /* Update flag OCFS2_DIO_ORPHANED_FL and record the orphan | |
2300 | * slot. | |
2301 | */ | |
2302 | fe->i_flags |= cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2303 | fe->i_dio_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2304 | } else { | |
2305 | fe->i_flags |= cpu_to_le32(OCFS2_ORPHANED_FL); | |
2306 | OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR; | |
ccd979bd | 2307 | |
06ee5c75 JQ |
2308 | /* Record which orphan dir our inode now resides |
2309 | * in. delete_inode will use this to determine which orphan | |
2310 | * dir to lock. */ | |
2311 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2312 | } | |
ccd979bd | 2313 | |
3939fda4 TY |
2314 | ocfs2_journal_dirty(handle, fe_bh); |
2315 | ||
8990e44a TM |
2316 | trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno, |
2317 | osb->slot_num); | |
ccd979bd | 2318 | |
ea45466a YL |
2319 | rollback: |
2320 | if (status < 0) { | |
2321 | if (S_ISDIR(inode->i_mode)) | |
2322 | ocfs2_add_links_count(orphan_fe, -1); | |
2323 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); | |
2324 | } | |
2325 | ||
ccd979bd | 2326 | leave: |
a81cb88b | 2327 | brelse(orphan_dir_bh); |
ccd979bd | 2328 | |
ccd979bd MF |
2329 | return status; |
2330 | } | |
2331 | ||
2332 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
2333 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 2334 | handle_t *handle, |
ccd979bd MF |
2335 | struct inode *orphan_dir_inode, |
2336 | struct inode *inode, | |
06ee5c75 JQ |
2337 | struct buffer_head *orphan_dir_bh, |
2338 | bool dio) | |
ccd979bd | 2339 | { |
06ee5c75 JQ |
2340 | const int namelen = OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN; |
2341 | char name[namelen + 1]; | |
ccd979bd MF |
2342 | struct ocfs2_dinode *orphan_fe; |
2343 | int status = 0; | |
4a12ca3a | 2344 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd | 2345 | |
06ee5c75 JQ |
2346 | if (dio) { |
2347 | status = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2348 | OCFS2_DIO_ORPHAN_PREFIX); | |
2349 | if (status != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2350 | status = -EINVAL; | |
2351 | mlog_errno(status); | |
2352 | return status; | |
2353 | } | |
2354 | ||
2355 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, | |
2356 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2357 | } else | |
2358 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
ccd979bd MF |
2359 | if (status < 0) { |
2360 | mlog_errno(status); | |
2361 | goto leave; | |
2362 | } | |
2363 | ||
8990e44a TM |
2364 | trace_ocfs2_orphan_del( |
2365 | (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
e38a5739 | 2366 | name, strlen(name)); |
ccd979bd MF |
2367 | |
2368 | /* find it's spot in the orphan directory */ | |
e38a5739 | 2369 | status = ocfs2_find_entry(name, strlen(name), orphan_dir_inode, |
4a12ca3a MF |
2370 | &lookup); |
2371 | if (status) { | |
ccd979bd MF |
2372 | mlog_errno(status); |
2373 | goto leave; | |
2374 | } | |
2375 | ||
2376 | /* remove it from the orphan directory */ | |
4a12ca3a | 2377 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
2378 | if (status < 0) { |
2379 | mlog_errno(status); | |
2380 | goto leave; | |
2381 | } | |
2382 | ||
0cf2f763 JB |
2383 | status = ocfs2_journal_access_di(handle, |
2384 | INODE_CACHE(orphan_dir_inode), | |
2385 | orphan_dir_bh, | |
13723d00 | 2386 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2387 | if (status < 0) { |
2388 | mlog_errno(status); | |
2389 | goto leave; | |
2390 | } | |
2391 | ||
2392 | /* do the i_nlink dance! :) */ | |
2393 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2394 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2395 | ocfs2_add_links_count(orphan_fe, -1); |
bfe86848 | 2396 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2397 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2398 | |
2399 | leave: | |
4a12ca3a | 2400 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd | 2401 | |
c1e8d35e TM |
2402 | if (status) |
2403 | mlog_errno(status); | |
ccd979bd MF |
2404 | return status; |
2405 | } | |
2406 | ||
97b8f4a9 | 2407 | /** |
25985edc | 2408 | * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to receive a newly |
97b8f4a9 MF |
2409 | * allocated file. This is different from the typical 'add to orphan dir' |
2410 | * operation in that the inode does not yet exist. This is a problem because | |
2411 | * the orphan dir stringifies the inode block number to come up with it's | |
2412 | * dirent. Obviously if the inode does not yet exist we have a chicken and egg | |
2413 | * problem. This function works around it by calling deeper into the orphan | |
2414 | * and suballoc code than other callers. Use this only by necessity. | |
2415 | * @dir: The directory which this inode will ultimately wind up under - not the | |
2416 | * orphan dir! | |
2417 | * @dir_bh: buffer_head the @dir inode block | |
2418 | * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled | |
2419 | * with the string to be used for orphan dirent. Pass back to the orphan dir | |
2420 | * code. | |
2421 | * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan | |
2422 | * dir code. | |
2423 | * @ret_di_blkno: block number where the new inode will be allocated. | |
2424 | * @orphan_insert: Dir insert context to be passed back into orphan dir code. | |
2425 | * @ret_inode_ac: Inode alloc context to be passed back to the allocator. | |
2426 | * | |
2427 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2428 | * fields will be populated. | |
2429 | * | |
2430 | * Returns non-zero on failure. | |
2431 | */ | |
2432 | static int ocfs2_prep_new_orphaned_file(struct inode *dir, | |
2433 | struct buffer_head *dir_bh, | |
2434 | char *orphan_name, | |
2435 | struct inode **ret_orphan_dir, | |
2436 | u64 *ret_di_blkno, | |
2437 | struct ocfs2_dir_lookup_result *orphan_insert, | |
2438 | struct ocfs2_alloc_context **ret_inode_ac) | |
2439 | { | |
2440 | int ret; | |
2441 | u64 di_blkno; | |
2442 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2443 | struct inode *orphan_dir = NULL; | |
2444 | struct buffer_head *orphan_dir_bh = NULL; | |
2445 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2446 | ||
2447 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh); | |
2448 | if (ret < 0) { | |
2449 | mlog_errno(ret); | |
2450 | return ret; | |
2451 | } | |
2452 | ||
2453 | /* reserve an inode spot */ | |
2454 | ret = ocfs2_reserve_new_inode(osb, &inode_ac); | |
2455 | if (ret < 0) { | |
2456 | if (ret != -ENOSPC) | |
2457 | mlog_errno(ret); | |
2458 | goto out; | |
2459 | } | |
2460 | ||
2461 | ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac, | |
2462 | &di_blkno); | |
2463 | if (ret) { | |
2464 | mlog_errno(ret); | |
2465 | goto out; | |
2466 | } | |
2467 | ||
2468 | ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh, | |
06ee5c75 JQ |
2469 | di_blkno, orphan_name, orphan_insert, |
2470 | false); | |
97b8f4a9 MF |
2471 | if (ret < 0) { |
2472 | mlog_errno(ret); | |
2473 | goto out; | |
2474 | } | |
2475 | ||
2476 | out: | |
2477 | if (ret == 0) { | |
2478 | *ret_orphan_dir = orphan_dir; | |
2479 | *ret_di_blkno = di_blkno; | |
2480 | *ret_inode_ac = inode_ac; | |
2481 | /* | |
2482 | * orphan_name and orphan_insert are already up to | |
2483 | * date via prepare_orphan_dir | |
2484 | */ | |
2485 | } else { | |
2486 | /* Unroll reserve_new_inode* */ | |
2487 | if (inode_ac) | |
2488 | ocfs2_free_alloc_context(inode_ac); | |
2489 | ||
2490 | /* Unroll orphan dir locking */ | |
2491 | mutex_unlock(&orphan_dir->i_mutex); | |
2492 | ocfs2_inode_unlock(orphan_dir, 1); | |
2493 | iput(orphan_dir); | |
2494 | } | |
2495 | ||
2496 | brelse(orphan_dir_bh); | |
2497 | ||
7869e590 | 2498 | return ret; |
97b8f4a9 MF |
2499 | } |
2500 | ||
bc13d347 TM |
2501 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
2502 | int mode, | |
2503 | struct inode **new_inode) | |
2504 | { | |
2505 | int status, did_quota_inode = 0; | |
2506 | struct inode *inode = NULL; | |
2507 | struct inode *orphan_dir = NULL; | |
2508 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2509 | struct ocfs2_dinode *di = NULL; | |
2510 | handle_t *handle = NULL; | |
2511 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2512 | struct buffer_head *parent_di_bh = NULL; | |
2513 | struct buffer_head *new_di_bh = NULL; | |
2514 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2515 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
97b8f4a9 MF |
2516 | u64 uninitialized_var(di_blkno), suballoc_loc; |
2517 | u16 suballoc_bit; | |
bc13d347 TM |
2518 | |
2519 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2520 | if (status < 0) { | |
2521 | if (status != -ENOENT) | |
2522 | mlog_errno(status); | |
2523 | return status; | |
2524 | } | |
2525 | ||
97b8f4a9 MF |
2526 | status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh, |
2527 | orphan_name, &orphan_dir, | |
2528 | &di_blkno, &orphan_insert, &inode_ac); | |
bc13d347 TM |
2529 | if (status < 0) { |
2530 | if (status != -ENOSPC) | |
2531 | mlog_errno(status); | |
2532 | goto leave; | |
2533 | } | |
2534 | ||
2535 | inode = ocfs2_get_init_inode(dir, mode); | |
9c89fe0a JK |
2536 | if (IS_ERR(inode)) { |
2537 | status = PTR_ERR(inode); | |
2538 | inode = NULL; | |
bc13d347 TM |
2539 | mlog_errno(status); |
2540 | goto leave; | |
2541 | } | |
2542 | ||
2543 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); | |
2544 | if (IS_ERR(handle)) { | |
2545 | status = PTR_ERR(handle); | |
2546 | handle = NULL; | |
2547 | mlog_errno(status); | |
2548 | goto leave; | |
2549 | } | |
2550 | ||
63936dda CH |
2551 | status = dquot_alloc_inode(inode); |
2552 | if (status) | |
bc13d347 | 2553 | goto leave; |
bc13d347 TM |
2554 | did_quota_inode = 1; |
2555 | ||
97b8f4a9 MF |
2556 | status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac, |
2557 | &suballoc_loc, | |
2558 | &suballoc_bit, di_blkno); | |
bc13d347 TM |
2559 | if (status < 0) { |
2560 | mlog_errno(status); | |
2561 | goto leave; | |
2562 | } | |
2563 | ||
6d6b77f1 | 2564 | clear_nlink(inode); |
97b8f4a9 MF |
2565 | /* do the real work now. */ |
2566 | status = __ocfs2_mknod_locked(dir, inode, | |
2567 | 0, &new_di_bh, parent_di_bh, handle, | |
2568 | inode_ac, di_blkno, suballoc_loc, | |
2569 | suballoc_bit); | |
bc13d347 TM |
2570 | if (status < 0) { |
2571 | mlog_errno(status); | |
2572 | goto leave; | |
2573 | } | |
2574 | ||
2575 | di = (struct ocfs2_dinode *)new_di_bh->b_data; | |
3939fda4 | 2576 | status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name, |
06ee5c75 | 2577 | &orphan_insert, orphan_dir, false); |
bc13d347 TM |
2578 | if (status < 0) { |
2579 | mlog_errno(status); | |
2580 | goto leave; | |
2581 | } | |
2582 | ||
2583 | /* get open lock so that only nodes can't remove it from orphan dir. */ | |
2584 | status = ocfs2_open_lock(inode); | |
2585 | if (status < 0) | |
2586 | mlog_errno(status); | |
2587 | ||
c7d260af | 2588 | insert_inode_hash(inode); |
bc13d347 TM |
2589 | leave: |
2590 | if (status < 0 && did_quota_inode) | |
63936dda | 2591 | dquot_free_inode(inode); |
bc13d347 TM |
2592 | if (handle) |
2593 | ocfs2_commit_trans(osb, handle); | |
2594 | ||
2595 | if (orphan_dir) { | |
2596 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
2597 | ocfs2_inode_unlock(orphan_dir, 1); | |
2598 | mutex_unlock(&orphan_dir->i_mutex); | |
2599 | iput(orphan_dir); | |
2600 | } | |
2601 | ||
bc13d347 TM |
2602 | if ((status < 0) && inode) { |
2603 | clear_nlink(inode); | |
2604 | iput(inode); | |
2605 | } | |
2606 | ||
2607 | if (inode_ac) | |
2608 | ocfs2_free_alloc_context(inode_ac); | |
2609 | ||
2610 | brelse(new_di_bh); | |
2611 | ||
2612 | if (!status) | |
2613 | *new_inode = inode; | |
2614 | ||
2615 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2616 | ||
2617 | ocfs2_inode_unlock(dir, 1); | |
2618 | brelse(parent_di_bh); | |
2619 | return status; | |
2620 | } | |
2621 | ||
06ee5c75 JQ |
2622 | int ocfs2_add_inode_to_orphan(struct ocfs2_super *osb, |
2623 | struct inode *inode) | |
2624 | { | |
2625 | char orphan_name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1]; | |
2626 | struct inode *orphan_dir_inode = NULL; | |
2627 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
2628 | struct buffer_head *di_bh = NULL; | |
2629 | int status = 0; | |
2630 | handle_t *handle = NULL; | |
4813962b | 2631 | struct ocfs2_dinode *di = NULL; |
06ee5c75 JQ |
2632 | |
2633 | status = ocfs2_inode_lock(inode, &di_bh, 1); | |
2634 | if (status < 0) { | |
2635 | mlog_errno(status); | |
2636 | goto bail; | |
2637 | } | |
2638 | ||
4813962b JQ |
2639 | di = (struct ocfs2_dinode *) di_bh->b_data; |
2640 | /* | |
2641 | * Another append dio crashed? | |
512f62ac | 2642 | * If so, manually recover it first. |
4813962b JQ |
2643 | */ |
2644 | if (unlikely(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))) { | |
512f62ac JQ |
2645 | status = ocfs2_truncate_file(inode, di_bh, i_size_read(inode)); |
2646 | if (status < 0) { | |
2647 | if (status != -ENOSPC) | |
2648 | mlog_errno(status); | |
2649 | goto bail_unlock_inode; | |
2650 | } | |
2651 | ||
2652 | status = ocfs2_del_inode_from_orphan(osb, inode, di_bh, 0, 0); | |
2653 | if (status < 0) { | |
2654 | mlog_errno(status); | |
2655 | goto bail_unlock_inode; | |
2656 | } | |
4813962b JQ |
2657 | } |
2658 | ||
06ee5c75 JQ |
2659 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir_inode, |
2660 | OCFS2_I(inode)->ip_blkno, | |
2661 | orphan_name, | |
2662 | &orphan_insert, | |
2663 | true); | |
2664 | if (status < 0) { | |
2665 | mlog_errno(status); | |
2666 | goto bail_unlock_inode; | |
2667 | } | |
2668 | ||
2669 | handle = ocfs2_start_trans(osb, | |
2670 | OCFS2_INODE_ADD_TO_ORPHAN_CREDITS); | |
2671 | if (IS_ERR(handle)) { | |
2672 | status = PTR_ERR(handle); | |
2673 | goto bail_unlock_orphan; | |
2674 | } | |
2675 | ||
2676 | status = ocfs2_orphan_add(osb, handle, inode, di_bh, orphan_name, | |
2677 | &orphan_insert, orphan_dir_inode, true); | |
2678 | if (status) | |
2679 | mlog_errno(status); | |
2680 | ||
2681 | ocfs2_commit_trans(osb, handle); | |
2682 | ||
2683 | bail_unlock_orphan: | |
2684 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
2685 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2686 | iput(orphan_dir_inode); | |
2687 | ||
2688 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2689 | ||
2690 | bail_unlock_inode: | |
2691 | ocfs2_inode_unlock(inode, 1); | |
2692 | brelse(di_bh); | |
2693 | ||
2694 | bail: | |
2695 | return status; | |
2696 | } | |
2697 | ||
2698 | int ocfs2_del_inode_from_orphan(struct ocfs2_super *osb, | |
cf1776a9 JQ |
2699 | struct inode *inode, struct buffer_head *di_bh, |
2700 | int update_isize, loff_t end) | |
06ee5c75 JQ |
2701 | { |
2702 | struct inode *orphan_dir_inode = NULL; | |
2703 | struct buffer_head *orphan_dir_bh = NULL; | |
cf1776a9 | 2704 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data; |
06ee5c75 JQ |
2705 | handle_t *handle = NULL; |
2706 | int status = 0; | |
2707 | ||
06ee5c75 JQ |
2708 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
2709 | ORPHAN_DIR_SYSTEM_INODE, | |
2710 | le16_to_cpu(di->i_dio_orphaned_slot)); | |
2711 | if (!orphan_dir_inode) { | |
2712 | status = -ENOENT; | |
2713 | mlog_errno(status); | |
cf1776a9 | 2714 | goto bail; |
06ee5c75 JQ |
2715 | } |
2716 | ||
2717 | mutex_lock(&orphan_dir_inode->i_mutex); | |
2718 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2719 | if (status < 0) { | |
2720 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2721 | iput(orphan_dir_inode); | |
2722 | mlog_errno(status); | |
cf1776a9 | 2723 | goto bail; |
06ee5c75 JQ |
2724 | } |
2725 | ||
2726 | handle = ocfs2_start_trans(osb, | |
2727 | OCFS2_INODE_DEL_FROM_ORPHAN_CREDITS); | |
2728 | if (IS_ERR(handle)) { | |
2729 | status = PTR_ERR(handle); | |
2730 | goto bail_unlock_orphan; | |
2731 | } | |
2732 | ||
2733 | BUG_ON(!(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))); | |
2734 | ||
2735 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, | |
2736 | inode, orphan_dir_bh, true); | |
2737 | if (status < 0) { | |
2738 | mlog_errno(status); | |
2739 | goto bail_commit; | |
2740 | } | |
2741 | ||
2742 | status = ocfs2_journal_access_di(handle, | |
2743 | INODE_CACHE(inode), | |
2744 | di_bh, | |
2745 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2746 | if (status < 0) { | |
2747 | mlog_errno(status); | |
2748 | goto bail_commit; | |
2749 | } | |
2750 | ||
2751 | di->i_flags &= ~cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2752 | di->i_dio_orphaned_slot = 0; | |
2753 | ||
2754 | if (update_isize) { | |
2755 | status = ocfs2_set_inode_size(handle, inode, di_bh, end); | |
2756 | if (status) | |
2757 | mlog_errno(status); | |
2758 | } else | |
2759 | ocfs2_journal_dirty(handle, di_bh); | |
2760 | ||
2761 | bail_commit: | |
2762 | ocfs2_commit_trans(osb, handle); | |
2763 | ||
2764 | bail_unlock_orphan: | |
2765 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
2766 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2767 | brelse(orphan_dir_bh); | |
2768 | iput(orphan_dir_inode); | |
2769 | ||
06ee5c75 JQ |
2770 | bail: |
2771 | return status; | |
2772 | } | |
2773 | ||
bc13d347 TM |
2774 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, |
2775 | struct inode *inode, | |
2776 | struct dentry *dentry) | |
2777 | { | |
2778 | int status = 0; | |
2779 | struct buffer_head *parent_di_bh = NULL; | |
2780 | handle_t *handle = NULL; | |
2781 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2782 | struct ocfs2_dinode *dir_di, *di; | |
2783 | struct inode *orphan_dir_inode = NULL; | |
2784 | struct buffer_head *orphan_dir_bh = NULL; | |
2785 | struct buffer_head *di_bh = NULL; | |
2786 | struct ocfs2_dir_lookup_result lookup = { NULL, }; | |
2787 | ||
8990e44a TM |
2788 | trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry, |
2789 | dentry->d_name.len, dentry->d_name.name, | |
2790 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
2791 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
bc13d347 TM |
2792 | |
2793 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2794 | if (status < 0) { | |
2795 | if (status != -ENOENT) | |
2796 | mlog_errno(status); | |
2797 | return status; | |
2798 | } | |
2799 | ||
2800 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; | |
2801 | if (!dir_di->i_links_count) { | |
2802 | /* can't make a file in a deleted directory. */ | |
2803 | status = -ENOENT; | |
2804 | goto leave; | |
2805 | } | |
2806 | ||
2807 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
2808 | dentry->d_name.len); | |
2809 | if (status) | |
2810 | goto leave; | |
2811 | ||
2812 | /* get a spot inside the dir. */ | |
2813 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, | |
2814 | dentry->d_name.name, | |
2815 | dentry->d_name.len, &lookup); | |
2816 | if (status < 0) { | |
2817 | mlog_errno(status); | |
2818 | goto leave; | |
2819 | } | |
2820 | ||
2821 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2822 | ORPHAN_DIR_SYSTEM_INODE, | |
2823 | osb->slot_num); | |
2824 | if (!orphan_dir_inode) { | |
62f8b1f0 | 2825 | status = -ENOENT; |
bc13d347 TM |
2826 | mlog_errno(status); |
2827 | goto leave; | |
2828 | } | |
2829 | ||
2830 | mutex_lock(&orphan_dir_inode->i_mutex); | |
2831 | ||
2832 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2833 | if (status < 0) { | |
2834 | mlog_errno(status); | |
2835 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2836 | iput(orphan_dir_inode); | |
2837 | goto leave; | |
2838 | } | |
2839 | ||
2840 | status = ocfs2_read_inode_block(inode, &di_bh); | |
2841 | if (status < 0) { | |
2842 | mlog_errno(status); | |
2843 | goto orphan_unlock; | |
2844 | } | |
2845 | ||
2846 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); | |
2847 | if (IS_ERR(handle)) { | |
2848 | status = PTR_ERR(handle); | |
2849 | handle = NULL; | |
2850 | mlog_errno(status); | |
2851 | goto orphan_unlock; | |
2852 | } | |
2853 | ||
2854 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), | |
2855 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2856 | if (status < 0) { | |
2857 | mlog_errno(status); | |
2858 | goto out_commit; | |
2859 | } | |
2860 | ||
2861 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
06ee5c75 | 2862 | orphan_dir_bh, false); |
bc13d347 TM |
2863 | if (status < 0) { |
2864 | mlog_errno(status); | |
2865 | goto out_commit; | |
2866 | } | |
2867 | ||
2868 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
13eb9887 | 2869 | di->i_flags &= ~cpu_to_le32(OCFS2_ORPHANED_FL); |
bc13d347 | 2870 | di->i_orphaned_slot = 0; |
bfe86848 | 2871 | set_nlink(inode, 1); |
10cf1a02 | 2872 | ocfs2_set_links_count(di, inode->i_nlink); |
6fdb702d | 2873 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
bc13d347 TM |
2874 | ocfs2_journal_dirty(handle, di_bh); |
2875 | ||
2876 | status = ocfs2_add_entry(handle, dentry, inode, | |
2877 | OCFS2_I(inode)->ip_blkno, parent_di_bh, | |
2878 | &lookup); | |
2879 | if (status < 0) { | |
2880 | mlog_errno(status); | |
2881 | goto out_commit; | |
2882 | } | |
2883 | ||
2884 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
2885 | OCFS2_I(dir)->ip_blkno); | |
2886 | if (status) { | |
2887 | mlog_errno(status); | |
2888 | goto out_commit; | |
2889 | } | |
2890 | ||
bc13d347 TM |
2891 | d_instantiate(dentry, inode); |
2892 | status = 0; | |
2893 | out_commit: | |
2894 | ocfs2_commit_trans(osb, handle); | |
2895 | orphan_unlock: | |
2896 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
2897 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2898 | iput(orphan_dir_inode); | |
2899 | leave: | |
2900 | ||
2901 | ocfs2_inode_unlock(dir, 1); | |
2902 | ||
2903 | brelse(di_bh); | |
2904 | brelse(parent_di_bh); | |
2905 | brelse(orphan_dir_bh); | |
2906 | ||
2907 | ocfs2_free_dir_lookup_result(&lookup); | |
2908 | ||
c1e8d35e TM |
2909 | if (status) |
2910 | mlog_errno(status); | |
bc13d347 TM |
2911 | |
2912 | return status; | |
2913 | } | |
2914 | ||
92e1d5be | 2915 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2916 | .create = ocfs2_create, |
2917 | .lookup = ocfs2_lookup, | |
2918 | .link = ocfs2_link, | |
2919 | .unlink = ocfs2_unlink, | |
2920 | .rmdir = ocfs2_unlink, | |
2921 | .symlink = ocfs2_symlink, | |
2922 | .mkdir = ocfs2_mkdir, | |
2923 | .mknod = ocfs2_mknod, | |
2924 | .rename = ocfs2_rename, | |
2925 | .setattr = ocfs2_setattr, | |
2926 | .getattr = ocfs2_getattr, | |
d38eb8db | 2927 | .permission = ocfs2_permission, |
cf1d6c76 TY |
2928 | .setxattr = generic_setxattr, |
2929 | .getxattr = generic_getxattr, | |
2930 | .listxattr = ocfs2_listxattr, | |
2931 | .removexattr = generic_removexattr, | |
55f4946e | 2932 | .fiemap = ocfs2_fiemap, |
4e34e719 | 2933 | .get_acl = ocfs2_iop_get_acl, |
702e5bc6 | 2934 | .set_acl = ocfs2_iop_set_acl, |
ccd979bd | 2935 | }; |