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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 MF |
44 | |
45 | #define MLOG_MASK_PREFIX ML_NAMEI | |
46 | #include <cluster/masklog.h> | |
47 | ||
48 | #include "ocfs2.h" | |
49 | ||
50 | #include "alloc.h" | |
51 | #include "dcache.h" | |
52 | #include "dir.h" | |
53 | #include "dlmglue.h" | |
54 | #include "extent_map.h" | |
55 | #include "file.h" | |
56 | #include "inode.h" | |
57 | #include "journal.h" | |
58 | #include "namei.h" | |
59 | #include "suballoc.h" | |
aa958874 | 60 | #include "super.h" |
ccd979bd MF |
61 | #include "symlink.h" |
62 | #include "sysfile.h" | |
63 | #include "uptodate.h" | |
cf1d6c76 | 64 | #include "xattr.h" |
89c38bd0 | 65 | #include "acl.h" |
ccd979bd MF |
66 | |
67 | #include "buffer_head_io.h" | |
68 | ||
ccd979bd MF |
69 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
70 | struct inode *dir, | |
f5d36202 | 71 | struct inode *inode, |
ccd979bd MF |
72 | dev_t dev, |
73 | struct buffer_head **new_fe_bh, | |
74 | struct buffer_head *parent_fe_bh, | |
1fabe148 | 75 | handle_t *handle, |
ccd979bd MF |
76 | struct ocfs2_alloc_context *inode_ac); |
77 | ||
ccd979bd | 78 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, |
5098c27b | 79 | struct inode **ret_orphan_dir, |
19bd341f | 80 | u64 blkno, |
ccd979bd | 81 | char *name, |
4a12ca3a | 82 | struct ocfs2_dir_lookup_result *lookup); |
ccd979bd MF |
83 | |
84 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 85 | handle_t *handle, |
ccd979bd | 86 | struct inode *inode, |
3939fda4 | 87 | struct buffer_head *fe_bh, |
ccd979bd | 88 | char *name, |
4a12ca3a | 89 | struct ocfs2_dir_lookup_result *lookup, |
5098c27b | 90 | struct inode *orphan_dir_inode); |
ccd979bd MF |
91 | |
92 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 93 | handle_t *handle, |
ccd979bd MF |
94 | struct inode *inode, |
95 | const char *symname); | |
96 | ||
ccd979bd MF |
97 | /* An orphan dir name is an 8 byte value, printed as a hex string */ |
98 | #define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64))) | |
99 | ||
100 | static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry, | |
101 | struct nameidata *nd) | |
102 | { | |
103 | int status; | |
104 | u64 blkno; | |
ccd979bd MF |
105 | struct inode *inode = NULL; |
106 | struct dentry *ret; | |
ccd979bd MF |
107 | struct ocfs2_inode_info *oi; |
108 | ||
109 | mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry, | |
110 | dentry->d_name.len, dentry->d_name.name); | |
111 | ||
112 | if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) { | |
113 | ret = ERR_PTR(-ENAMETOOLONG); | |
114 | goto bail; | |
115 | } | |
116 | ||
b0697053 MF |
117 | mlog(0, "find name %.*s in directory %llu\n", dentry->d_name.len, |
118 | dentry->d_name.name, (unsigned long long)OCFS2_I(dir)->ip_blkno); | |
ccd979bd | 119 | |
cb25797d | 120 | status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT); |
ccd979bd MF |
121 | if (status < 0) { |
122 | if (status != -ENOENT) | |
123 | mlog_errno(status); | |
124 | ret = ERR_PTR(status); | |
125 | goto bail; | |
126 | } | |
127 | ||
be94d117 MF |
128 | status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name, |
129 | dentry->d_name.len, &blkno); | |
ccd979bd MF |
130 | if (status < 0) |
131 | goto bail_add; | |
132 | ||
5fa0613e | 133 | inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0); |
ccd979bd | 134 | if (IS_ERR(inode)) { |
ccd979bd MF |
135 | ret = ERR_PTR(-EACCES); |
136 | goto bail_unlock; | |
137 | } | |
138 | ||
139 | oi = OCFS2_I(inode); | |
140 | /* Clear any orphaned state... If we were able to look up the | |
141 | * inode from a directory, it certainly can't be orphaned. We | |
142 | * might have the bad state from a node which intended to | |
143 | * orphan this inode but crashed before it could commit the | |
144 | * unlink. */ | |
145 | spin_lock(&oi->ip_lock); | |
146 | oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED; | |
ccd979bd MF |
147 | spin_unlock(&oi->ip_lock); |
148 | ||
149 | bail_add: | |
fb045adb | 150 | d_set_d_op(dentry, &ocfs2_dentry_ops); |
ccd979bd MF |
151 | ret = d_splice_alias(inode, dentry); |
152 | ||
379dfe9d MF |
153 | if (inode) { |
154 | /* | |
155 | * If d_splice_alias() finds a DCACHE_DISCONNECTED | |
156 | * dentry, it will d_move() it on top of ourse. The | |
157 | * return value will indicate this however, so in | |
158 | * those cases, we switch them around for the locking | |
159 | * code. | |
160 | * | |
161 | * NOTE: This dentry already has ->d_op set from | |
162 | * ocfs2_get_parent() and ocfs2_get_dentry() | |
163 | */ | |
164 | if (ret) | |
165 | dentry = ret; | |
166 | ||
167 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
0027dd5b | 168 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
169 | if (status) { |
170 | mlog_errno(status); | |
171 | ret = ERR_PTR(status); | |
172 | goto bail_unlock; | |
173 | } | |
5e98d492 GR |
174 | } else |
175 | ocfs2_dentry_attach_gen(dentry); | |
379dfe9d | 176 | |
ccd979bd MF |
177 | bail_unlock: |
178 | /* Don't drop the cluster lock until *after* the d_add -- | |
179 | * unlink on another node will message us to remove that | |
180 | * dentry under this lock so otherwise we can race this with | |
34d024f8 | 181 | * the downconvert thread and have a stale dentry. */ |
e63aecb6 | 182 | ocfs2_inode_unlock(dir, 0); |
ccd979bd MF |
183 | |
184 | bail: | |
ccd979bd MF |
185 | |
186 | mlog_exit_ptr(ret); | |
187 | ||
188 | return ret; | |
189 | } | |
190 | ||
f5d36202 TY |
191 | static struct inode *ocfs2_get_init_inode(struct inode *dir, int mode) |
192 | { | |
193 | struct inode *inode; | |
194 | ||
195 | inode = new_inode(dir->i_sb); | |
196 | if (!inode) { | |
197 | mlog(ML_ERROR, "new_inode failed!\n"); | |
198 | return NULL; | |
199 | } | |
200 | ||
201 | /* populate as many fields early on as possible - many of | |
202 | * these are used by the support functions here and in | |
203 | * callers. */ | |
204 | if (S_ISDIR(mode)) | |
205 | inode->i_nlink = 2; | |
206 | else | |
207 | inode->i_nlink = 1; | |
75fe0a24 | 208 | inode_init_owner(inode, dir, mode); |
871a2931 | 209 | dquot_initialize(inode); |
f5d36202 TY |
210 | return inode; |
211 | } | |
212 | ||
ccd979bd MF |
213 | static int ocfs2_mknod(struct inode *dir, |
214 | struct dentry *dentry, | |
215 | int mode, | |
216 | dev_t dev) | |
217 | { | |
218 | int status = 0; | |
219 | struct buffer_head *parent_fe_bh = NULL; | |
1fabe148 | 220 | handle_t *handle = NULL; |
ccd979bd MF |
221 | struct ocfs2_super *osb; |
222 | struct ocfs2_dinode *dirfe; | |
223 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
224 | struct inode *inode = NULL; |
225 | struct ocfs2_alloc_context *inode_ac = NULL; | |
226 | struct ocfs2_alloc_context *data_ac = NULL; | |
9b7895ef | 227 | struct ocfs2_alloc_context *meta_ac = NULL; |
534eaddd | 228 | int want_clusters = 0; |
9b7895ef | 229 | int want_meta = 0; |
534eaddd TY |
230 | int xattr_credits = 0; |
231 | struct ocfs2_security_xattr_info si = { | |
232 | .enable = 1, | |
233 | }; | |
a90714c1 | 234 | int did_quota_inode = 0; |
4a12ca3a | 235 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
236 | sigset_t oldset; |
237 | int did_block_signals = 0; | |
ccd979bd MF |
238 | |
239 | mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, mode, | |
240 | (unsigned long)dev, dentry->d_name.len, | |
241 | dentry->d_name.name); | |
242 | ||
871a2931 | 243 | dquot_initialize(dir); |
907f4554 | 244 | |
ccd979bd MF |
245 | /* get our super block */ |
246 | osb = OCFS2_SB(dir->i_sb); | |
247 | ||
e63aecb6 | 248 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
e3a82138 MF |
249 | if (status < 0) { |
250 | if (status != -ENOENT) | |
251 | mlog_errno(status); | |
252 | return status; | |
253 | } | |
254 | ||
198a1ca3 | 255 | if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) { |
a663e305 MF |
256 | status = -EMLINK; |
257 | goto leave; | |
258 | } | |
259 | ||
ccd979bd | 260 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
198a1ca3 | 261 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
262 | /* can't make a file in a deleted directory. */ |
263 | status = -ENOENT; | |
264 | goto leave; | |
265 | } | |
266 | ||
267 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
268 | dentry->d_name.len); | |
269 | if (status) | |
270 | goto leave; | |
271 | ||
272 | /* get a spot inside the dir. */ | |
273 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
274 | dentry->d_name.name, | |
4a12ca3a | 275 | dentry->d_name.len, &lookup); |
ccd979bd MF |
276 | if (status < 0) { |
277 | mlog_errno(status); | |
278 | goto leave; | |
279 | } | |
280 | ||
281 | /* reserve an inode spot */ | |
da5cbf2f | 282 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
283 | if (status < 0) { |
284 | if (status != -ENOSPC) | |
285 | mlog_errno(status); | |
286 | goto leave; | |
287 | } | |
288 | ||
f5d36202 TY |
289 | inode = ocfs2_get_init_inode(dir, mode); |
290 | if (!inode) { | |
291 | status = -ENOMEM; | |
292 | mlog_errno(status); | |
293 | goto leave; | |
294 | } | |
295 | ||
534eaddd | 296 | /* get security xattr */ |
2a7dba39 | 297 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
298 | if (status) { |
299 | if (status == -EOPNOTSUPP) | |
300 | si.enable = 0; | |
301 | else { | |
302 | mlog_errno(status); | |
303 | goto leave; | |
304 | } | |
305 | } | |
306 | ||
89c38bd0 TY |
307 | /* calculate meta data/clusters for setting security and acl xattr */ |
308 | status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode, | |
9b7895ef MF |
309 | &si, &want_clusters, |
310 | &xattr_credits, &want_meta); | |
89c38bd0 TY |
311 | if (status < 0) { |
312 | mlog_errno(status); | |
313 | goto leave; | |
ccd979bd MF |
314 | } |
315 | ||
534eaddd | 316 | /* Reserve a cluster if creating an extent based directory. */ |
9b7895ef | 317 | if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) { |
534eaddd TY |
318 | want_clusters += 1; |
319 | ||
9b7895ef | 320 | /* Dir indexing requires extra space as well */ |
4ed8a6bb | 321 | if (ocfs2_supports_indexed_dirs(osb)) |
9b7895ef | 322 | want_meta++; |
9b7895ef MF |
323 | } |
324 | ||
325 | status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac); | |
326 | if (status < 0) { | |
327 | if (status != -ENOSPC) | |
328 | mlog_errno(status); | |
329 | goto leave; | |
330 | } | |
331 | ||
534eaddd TY |
332 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); |
333 | if (status < 0) { | |
334 | if (status != -ENOSPC) | |
335 | mlog_errno(status); | |
336 | goto leave; | |
337 | } | |
338 | ||
9b7895ef MF |
339 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, |
340 | S_ISDIR(mode), | |
341 | xattr_credits)); | |
ccd979bd MF |
342 | if (IS_ERR(handle)) { |
343 | status = PTR_ERR(handle); | |
344 | handle = NULL; | |
345 | mlog_errno(status); | |
346 | goto leave; | |
347 | } | |
348 | ||
547ba7c8 JB |
349 | /* Starting to change things, restart is no longer possible. */ |
350 | ocfs2_block_signals(&oldset); | |
351 | did_block_signals = 1; | |
352 | ||
63936dda CH |
353 | status = dquot_alloc_inode(inode); |
354 | if (status) | |
a90714c1 | 355 | goto leave; |
a90714c1 JK |
356 | did_quota_inode = 1; |
357 | ||
19bd341f TM |
358 | mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, |
359 | inode->i_mode, (unsigned long)dev, dentry->d_name.len, | |
360 | dentry->d_name.name); | |
361 | ||
ccd979bd | 362 | /* do the real work now. */ |
19bd341f | 363 | status = ocfs2_mknod_locked(osb, dir, inode, dev, |
ccd979bd | 364 | &new_fe_bh, parent_fe_bh, handle, |
f5d36202 | 365 | inode_ac); |
ccd979bd MF |
366 | if (status < 0) { |
367 | mlog_errno(status); | |
368 | goto leave; | |
369 | } | |
370 | ||
371 | if (S_ISDIR(mode)) { | |
372 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, | |
9b7895ef | 373 | new_fe_bh, data_ac, meta_ac); |
ccd979bd MF |
374 | if (status < 0) { |
375 | mlog_errno(status); | |
376 | goto leave; | |
377 | } | |
378 | ||
0cf2f763 JB |
379 | status = ocfs2_journal_access_di(handle, INODE_CACHE(dir), |
380 | parent_fe_bh, | |
13723d00 | 381 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
382 | if (status < 0) { |
383 | mlog_errno(status); | |
384 | goto leave; | |
385 | } | |
198a1ca3 | 386 | ocfs2_add_links_count(dirfe, 1); |
ec20cec7 | 387 | ocfs2_journal_dirty(handle, parent_fe_bh); |
d8c76e6f | 388 | inc_nlink(dir); |
ccd979bd MF |
389 | } |
390 | ||
89c38bd0 | 391 | status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh, |
9b7895ef | 392 | meta_ac, data_ac); |
89c38bd0 TY |
393 | if (status < 0) { |
394 | mlog_errno(status); | |
395 | goto leave; | |
396 | } | |
397 | ||
534eaddd TY |
398 | if (si.enable) { |
399 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
9b7895ef | 400 | meta_ac, data_ac); |
534eaddd TY |
401 | if (status < 0) { |
402 | mlog_errno(status); | |
403 | goto leave; | |
404 | } | |
405 | } | |
406 | ||
a9743fcd MF |
407 | /* |
408 | * Do this before adding the entry to the directory. We add | |
409 | * also set d_op after success so that ->d_iput() will cleanup | |
410 | * the dentry lock even if ocfs2_add_entry() fails below. | |
411 | */ | |
412 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
413 | OCFS2_I(dir)->ip_blkno); | |
414 | if (status) { | |
ccd979bd MF |
415 | mlog_errno(status); |
416 | goto leave; | |
417 | } | |
fb045adb | 418 | d_set_d_op(dentry, &ocfs2_dentry_ops); |
ccd979bd | 419 | |
a9743fcd MF |
420 | status = ocfs2_add_entry(handle, dentry, inode, |
421 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
422 | &lookup); | |
423 | if (status < 0) { | |
379dfe9d MF |
424 | mlog_errno(status); |
425 | goto leave; | |
426 | } | |
427 | ||
ccd979bd | 428 | insert_inode_hash(inode); |
ccd979bd MF |
429 | d_instantiate(dentry, inode); |
430 | status = 0; | |
431 | leave: | |
a90714c1 | 432 | if (status < 0 && did_quota_inode) |
63936dda | 433 | dquot_free_inode(inode); |
ccd979bd | 434 | if (handle) |
02dc1af4 | 435 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 436 | |
e63aecb6 | 437 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
438 | if (did_block_signals) |
439 | ocfs2_unblock_signals(&oldset); | |
e3a82138 | 440 | |
ccd979bd MF |
441 | if (status == -ENOSPC) |
442 | mlog(0, "Disk is full\n"); | |
443 | ||
a81cb88b | 444 | brelse(new_fe_bh); |
a81cb88b | 445 | brelse(parent_fe_bh); |
534eaddd TY |
446 | kfree(si.name); |
447 | kfree(si.value); | |
ccd979bd | 448 | |
4a12ca3a MF |
449 | ocfs2_free_dir_lookup_result(&lookup); |
450 | ||
ccd979bd MF |
451 | if (inode_ac) |
452 | ocfs2_free_alloc_context(inode_ac); | |
453 | ||
454 | if (data_ac) | |
455 | ocfs2_free_alloc_context(data_ac); | |
456 | ||
9b7895ef MF |
457 | if (meta_ac) |
458 | ocfs2_free_alloc_context(meta_ac); | |
534eaddd | 459 | |
062d3403 LD |
460 | /* |
461 | * We should call iput after the i_mutex of the bitmap been | |
462 | * unlocked in ocfs2_free_alloc_context, or the | |
463 | * ocfs2_delete_inode will mutex_lock again. | |
464 | */ | |
465 | if ((status < 0) && inode) { | |
466 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; | |
467 | clear_nlink(inode); | |
468 | iput(inode); | |
469 | } | |
470 | ||
ccd979bd MF |
471 | mlog_exit(status); |
472 | ||
473 | return status; | |
474 | } | |
475 | ||
021960ca MF |
476 | static int __ocfs2_mknod_locked(struct inode *dir, |
477 | struct inode *inode, | |
478 | dev_t dev, | |
479 | struct buffer_head **new_fe_bh, | |
480 | struct buffer_head *parent_fe_bh, | |
481 | handle_t *handle, | |
482 | struct ocfs2_alloc_context *inode_ac, | |
483 | u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit) | |
ccd979bd MF |
484 | { |
485 | int status = 0; | |
021960ca | 486 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
ccd979bd MF |
487 | struct ocfs2_dinode *fe = NULL; |
488 | struct ocfs2_extent_list *fel; | |
9b7895ef | 489 | u16 feat; |
ccd979bd | 490 | |
ccd979bd | 491 | *new_fe_bh = NULL; |
ccd979bd | 492 | |
ccd979bd MF |
493 | /* populate as many fields early on as possible - many of |
494 | * these are used by the support functions here and in | |
495 | * callers. */ | |
496 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
497 | OCFS2_I(inode)->ip_blkno = fe_blkno; | |
ccd979bd MF |
498 | spin_lock(&osb->osb_lock); |
499 | inode->i_generation = osb->s_next_generation++; | |
500 | spin_unlock(&osb->osb_lock); | |
501 | ||
502 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
503 | if (!*new_fe_bh) { | |
504 | status = -EIO; | |
505 | mlog_errno(status); | |
506 | goto leave; | |
507 | } | |
8cb471e8 | 508 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
ccd979bd | 509 | |
0cf2f763 JB |
510 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
511 | *new_fe_bh, | |
13723d00 | 512 | OCFS2_JOURNAL_ACCESS_CREATE); |
ccd979bd MF |
513 | if (status < 0) { |
514 | mlog_errno(status); | |
515 | goto leave; | |
516 | } | |
517 | ||
518 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
519 | memset(fe, 0, osb->sb->s_blocksize); | |
520 | ||
521 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
522 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
523 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
2b6cb576 | 524 | fe->i_suballoc_loc = cpu_to_le64(suballoc_loc); |
ccd979bd | 525 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); |
4d0ddb2c | 526 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
f5d36202 TY |
527 | fe->i_uid = cpu_to_le32(inode->i_uid); |
528 | fe->i_gid = cpu_to_le32(inode->i_gid); | |
529 | fe->i_mode = cpu_to_le16(inode->i_mode); | |
530 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 531 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
198a1ca3 MF |
532 | |
533 | ocfs2_set_links_count(fe, inode->i_nlink); | |
ccd979bd MF |
534 | |
535 | fe->i_last_eb_blk = 0; | |
536 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
537 | le32_add_cpu(&fe->i_flags, OCFS2_VALID_FL); | |
538 | fe->i_atime = fe->i_ctime = fe->i_mtime = | |
539 | cpu_to_le64(CURRENT_TIME.tv_sec); | |
540 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = | |
541 | cpu_to_le32(CURRENT_TIME.tv_nsec); | |
542 | fe->i_dtime = 0; | |
543 | ||
5b6a3a2b | 544 | /* |
9b7895ef MF |
545 | * If supported, directories start with inline data. If inline |
546 | * isn't supported, but indexing is, we start them as indexed. | |
5b6a3a2b | 547 | */ |
9b7895ef | 548 | feat = le16_to_cpu(fe->i_dyn_features); |
f5d36202 | 549 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
550 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
551 | ||
d9ae49d6 TY |
552 | fe->id2.i_data.id_count = cpu_to_le16( |
553 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); | |
5b6a3a2b MF |
554 | } else { |
555 | fel = &fe->id2.i_list; | |
556 | fel->l_tree_depth = 0; | |
557 | fel->l_next_free_rec = 0; | |
558 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
559 | } | |
ccd979bd | 560 | |
ec20cec7 | 561 | ocfs2_journal_dirty(handle, *new_fe_bh); |
ccd979bd | 562 | |
b657c95c | 563 | ocfs2_populate_inode(inode, fe, 1); |
0cf2f763 | 564 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
c271c5c2 SM |
565 | if (!ocfs2_mount_local(osb)) { |
566 | status = ocfs2_create_new_inode_locks(inode); | |
567 | if (status < 0) | |
568 | mlog_errno(status); | |
569 | } | |
ccd979bd MF |
570 | |
571 | status = 0; /* error in ocfs2_create_new_inode_locks is not | |
572 | * critical */ | |
573 | ||
ccd979bd MF |
574 | leave: |
575 | if (status < 0) { | |
576 | if (*new_fe_bh) { | |
577 | brelse(*new_fe_bh); | |
578 | *new_fe_bh = NULL; | |
579 | } | |
ccd979bd MF |
580 | } |
581 | ||
582 | mlog_exit(status); | |
583 | return status; | |
584 | } | |
585 | ||
021960ca MF |
586 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
587 | struct inode *dir, | |
588 | struct inode *inode, | |
589 | dev_t dev, | |
590 | struct buffer_head **new_fe_bh, | |
591 | struct buffer_head *parent_fe_bh, | |
592 | handle_t *handle, | |
593 | struct ocfs2_alloc_context *inode_ac) | |
594 | { | |
595 | int status = 0; | |
596 | u64 suballoc_loc, fe_blkno = 0; | |
597 | u16 suballoc_bit; | |
598 | ||
599 | *new_fe_bh = NULL; | |
600 | ||
601 | status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh, | |
602 | inode_ac, &suballoc_loc, | |
603 | &suballoc_bit, &fe_blkno); | |
604 | if (status < 0) { | |
605 | mlog_errno(status); | |
606 | return status; | |
607 | } | |
608 | ||
609 | return __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh, | |
610 | parent_fe_bh, handle, inode_ac, | |
611 | fe_blkno, suballoc_loc, suballoc_bit); | |
612 | } | |
613 | ||
ccd979bd MF |
614 | static int ocfs2_mkdir(struct inode *dir, |
615 | struct dentry *dentry, | |
616 | int mode) | |
617 | { | |
618 | int ret; | |
619 | ||
620 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, | |
621 | dentry->d_name.len, dentry->d_name.name); | |
622 | ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0); | |
623 | mlog_exit(ret); | |
624 | ||
625 | return ret; | |
626 | } | |
627 | ||
628 | static int ocfs2_create(struct inode *dir, | |
629 | struct dentry *dentry, | |
630 | int mode, | |
631 | struct nameidata *nd) | |
632 | { | |
633 | int ret; | |
634 | ||
635 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, | |
636 | dentry->d_name.len, dentry->d_name.name); | |
637 | ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0); | |
638 | mlog_exit(ret); | |
639 | ||
640 | return ret; | |
641 | } | |
642 | ||
643 | static int ocfs2_link(struct dentry *old_dentry, | |
644 | struct inode *dir, | |
645 | struct dentry *dentry) | |
646 | { | |
1fabe148 | 647 | handle_t *handle; |
ccd979bd MF |
648 | struct inode *inode = old_dentry->d_inode; |
649 | int err; | |
650 | struct buffer_head *fe_bh = NULL; | |
651 | struct buffer_head *parent_fe_bh = NULL; | |
ccd979bd MF |
652 | struct ocfs2_dinode *fe = NULL; |
653 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
4a12ca3a | 654 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 | 655 | sigset_t oldset; |
ccd979bd MF |
656 | |
657 | mlog_entry("(inode=%lu, old='%.*s' new='%.*s')\n", inode->i_ino, | |
658 | old_dentry->d_name.len, old_dentry->d_name.name, | |
659 | dentry->d_name.len, dentry->d_name.name); | |
660 | ||
123a9643 MF |
661 | if (S_ISDIR(inode->i_mode)) |
662 | return -EPERM; | |
ccd979bd | 663 | |
871a2931 | 664 | dquot_initialize(dir); |
907f4554 | 665 | |
cb25797d | 666 | err = ocfs2_inode_lock_nested(dir, &parent_fe_bh, 1, OI_LS_PARENT); |
ccd979bd MF |
667 | if (err < 0) { |
668 | if (err != -ENOENT) | |
669 | mlog_errno(err); | |
123a9643 | 670 | return err; |
ccd979bd MF |
671 | } |
672 | ||
0f62de2c TY |
673 | if (!dir->i_nlink) { |
674 | err = -ENOENT; | |
123a9643 | 675 | goto out; |
0f62de2c TY |
676 | } |
677 | ||
ccd979bd MF |
678 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
679 | dentry->d_name.len); | |
680 | if (err) | |
123a9643 | 681 | goto out; |
ccd979bd MF |
682 | |
683 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
684 | dentry->d_name.name, | |
4a12ca3a | 685 | dentry->d_name.len, &lookup); |
ccd979bd MF |
686 | if (err < 0) { |
687 | mlog_errno(err); | |
123a9643 | 688 | goto out; |
ccd979bd MF |
689 | } |
690 | ||
e63aecb6 | 691 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
692 | if (err < 0) { |
693 | if (err != -ENOENT) | |
694 | mlog_errno(err); | |
123a9643 | 695 | goto out; |
ccd979bd MF |
696 | } |
697 | ||
698 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
198a1ca3 | 699 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
ccd979bd | 700 | err = -EMLINK; |
123a9643 | 701 | goto out_unlock_inode; |
ccd979bd MF |
702 | } |
703 | ||
a90714c1 | 704 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
705 | if (IS_ERR(handle)) { |
706 | err = PTR_ERR(handle); | |
707 | handle = NULL; | |
708 | mlog_errno(err); | |
123a9643 | 709 | goto out_unlock_inode; |
ccd979bd MF |
710 | } |
711 | ||
547ba7c8 JB |
712 | /* Starting to change things, restart is no longer possible. */ |
713 | ocfs2_block_signals(&oldset); | |
714 | ||
0cf2f763 | 715 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 716 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
717 | if (err < 0) { |
718 | mlog_errno(err); | |
123a9643 | 719 | goto out_commit; |
ccd979bd MF |
720 | } |
721 | ||
d8c76e6f | 722 | inc_nlink(inode); |
ccd979bd | 723 | inode->i_ctime = CURRENT_TIME; |
198a1ca3 | 724 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
725 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
726 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
ec20cec7 | 727 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd MF |
728 | |
729 | err = ocfs2_add_entry(handle, dentry, inode, | |
730 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 731 | parent_fe_bh, &lookup); |
ccd979bd | 732 | if (err) { |
198a1ca3 | 733 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 734 | drop_nlink(inode); |
ccd979bd | 735 | mlog_errno(err); |
123a9643 | 736 | goto out_commit; |
ccd979bd MF |
737 | } |
738 | ||
0027dd5b | 739 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
740 | if (err) { |
741 | mlog_errno(err); | |
123a9643 | 742 | goto out_commit; |
379dfe9d MF |
743 | } |
744 | ||
7de9c6ee | 745 | ihold(inode); |
fb045adb | 746 | d_set_d_op(dentry, &ocfs2_dentry_ops); |
ccd979bd | 747 | d_instantiate(dentry, inode); |
123a9643 MF |
748 | |
749 | out_commit: | |
02dc1af4 | 750 | ocfs2_commit_trans(osb, handle); |
547ba7c8 | 751 | ocfs2_unblock_signals(&oldset); |
123a9643 | 752 | out_unlock_inode: |
e63aecb6 | 753 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
754 | |
755 | out: | |
e63aecb6 | 756 | ocfs2_inode_unlock(dir, 1); |
123a9643 | 757 | |
a81cb88b MF |
758 | brelse(fe_bh); |
759 | brelse(parent_fe_bh); | |
ccd979bd | 760 | |
4a12ca3a MF |
761 | ocfs2_free_dir_lookup_result(&lookup); |
762 | ||
ccd979bd MF |
763 | mlog_exit(err); |
764 | ||
765 | return err; | |
766 | } | |
767 | ||
379dfe9d MF |
768 | /* |
769 | * Takes and drops an exclusive lock on the given dentry. This will | |
770 | * force other nodes to drop it. | |
771 | */ | |
772 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
773 | { | |
774 | int ret; | |
775 | ||
776 | ret = ocfs2_dentry_lock(dentry, 1); | |
777 | if (ret) | |
778 | mlog_errno(ret); | |
779 | else | |
780 | ocfs2_dentry_unlock(dentry, 1); | |
781 | ||
782 | return ret; | |
783 | } | |
784 | ||
17ff7856 MF |
785 | static inline int inode_is_unlinkable(struct inode *inode) |
786 | { | |
787 | if (S_ISDIR(inode->i_mode)) { | |
788 | if (inode->i_nlink == 2) | |
789 | return 1; | |
790 | return 0; | |
791 | } | |
792 | ||
793 | if (inode->i_nlink == 1) | |
794 | return 1; | |
795 | return 0; | |
796 | } | |
797 | ||
ccd979bd MF |
798 | static int ocfs2_unlink(struct inode *dir, |
799 | struct dentry *dentry) | |
800 | { | |
801 | int status; | |
30a4f5e8 | 802 | int child_locked = 0; |
ccd979bd | 803 | struct inode *inode = dentry->d_inode; |
5098c27b | 804 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
805 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
806 | u64 blkno; | |
807 | struct ocfs2_dinode *fe = NULL; | |
808 | struct buffer_head *fe_bh = NULL; | |
809 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 810 | handle_t *handle = NULL; |
ccd979bd | 811 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
812 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
813 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd MF |
814 | |
815 | mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry, | |
816 | dentry->d_name.len, dentry->d_name.name); | |
817 | ||
871a2931 | 818 | dquot_initialize(dir); |
907f4554 | 819 | |
ccd979bd MF |
820 | BUG_ON(dentry->d_parent->d_inode != dir); |
821 | ||
b0697053 | 822 | mlog(0, "ino = %llu\n", (unsigned long long)OCFS2_I(inode)->ip_blkno); |
ccd979bd MF |
823 | |
824 | if (inode == osb->root_inode) { | |
825 | mlog(0, "Cannot delete the root directory\n"); | |
30a4f5e8 | 826 | return -EPERM; |
ccd979bd MF |
827 | } |
828 | ||
cb25797d JK |
829 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
830 | OI_LS_PARENT); | |
ccd979bd MF |
831 | if (status < 0) { |
832 | if (status != -ENOENT) | |
833 | mlog_errno(status); | |
30a4f5e8 | 834 | return status; |
ccd979bd MF |
835 | } |
836 | ||
837 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
838 | dentry->d_name.len, &blkno, dir, |
839 | &lookup); | |
ccd979bd MF |
840 | if (status < 0) { |
841 | if (status != -ENOENT) | |
842 | mlog_errno(status); | |
843 | goto leave; | |
844 | } | |
845 | ||
846 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
847 | status = -ENOENT; | |
848 | ||
b0697053 MF |
849 | mlog(0, "ip_blkno %llu != dirent blkno %llu ip_flags = %x\n", |
850 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
851 | (unsigned long long)blkno, OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
852 | goto leave; |
853 | } | |
854 | ||
e63aecb6 | 855 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
856 | if (status < 0) { |
857 | if (status != -ENOENT) | |
858 | mlog_errno(status); | |
859 | goto leave; | |
860 | } | |
30a4f5e8 | 861 | child_locked = 1; |
ccd979bd MF |
862 | |
863 | if (S_ISDIR(inode->i_mode)) { | |
b80b549c | 864 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
ccd979bd MF |
865 | status = -ENOTEMPTY; |
866 | goto leave; | |
867 | } | |
868 | } | |
869 | ||
379dfe9d | 870 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 871 | if (status < 0) { |
34d024f8 | 872 | /* This remote delete should succeed under all normal |
ccd979bd MF |
873 | * circumstances. */ |
874 | mlog_errno(status); | |
875 | goto leave; | |
876 | } | |
877 | ||
17ff7856 | 878 | if (inode_is_unlinkable(inode)) { |
19bd341f TM |
879 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
880 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 881 | orphan_name, &orphan_insert); |
ccd979bd MF |
882 | if (status < 0) { |
883 | mlog_errno(status); | |
884 | goto leave; | |
885 | } | |
886 | } | |
887 | ||
a90714c1 | 888 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
889 | if (IS_ERR(handle)) { |
890 | status = PTR_ERR(handle); | |
891 | handle = NULL; | |
892 | mlog_errno(status); | |
893 | goto leave; | |
894 | } | |
895 | ||
0cf2f763 | 896 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 897 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
898 | if (status < 0) { |
899 | mlog_errno(status); | |
900 | goto leave; | |
901 | } | |
902 | ||
903 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
904 | ||
17ff7856 | 905 | if (inode_is_unlinkable(inode)) { |
3939fda4 | 906 | status = ocfs2_orphan_add(osb, handle, inode, fe_bh, orphan_name, |
4a12ca3a | 907 | &orphan_insert, orphan_dir); |
ccd979bd MF |
908 | if (status < 0) { |
909 | mlog_errno(status); | |
910 | goto leave; | |
911 | } | |
912 | } | |
913 | ||
914 | /* delete the name from the parent dir */ | |
4a12ca3a | 915 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
916 | if (status < 0) { |
917 | mlog_errno(status); | |
918 | goto leave; | |
919 | } | |
920 | ||
17ff7856 MF |
921 | if (S_ISDIR(inode->i_mode)) |
922 | drop_nlink(inode); | |
923 | drop_nlink(inode); | |
198a1ca3 | 924 | ocfs2_set_links_count(fe, inode->i_nlink); |
ec20cec7 | 925 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd | 926 | |
592282cf MF |
927 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; |
928 | if (S_ISDIR(inode->i_mode)) | |
17ff7856 | 929 | drop_nlink(dir); |
592282cf MF |
930 | |
931 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
932 | if (status < 0) { | |
933 | mlog_errno(status); | |
934 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 935 | inc_nlink(dir); |
ccd979bd MF |
936 | } |
937 | ||
938 | leave: | |
ccd979bd | 939 | if (handle) |
02dc1af4 | 940 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 941 | |
30a4f5e8 | 942 | if (child_locked) |
e63aecb6 | 943 | ocfs2_inode_unlock(inode, 1); |
30a4f5e8 | 944 | |
e63aecb6 | 945 | ocfs2_inode_unlock(dir, 1); |
30a4f5e8 | 946 | |
5098c27b MF |
947 | if (orphan_dir) { |
948 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 949 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
950 | mutex_unlock(&orphan_dir->i_mutex); |
951 | iput(orphan_dir); | |
952 | } | |
953 | ||
a81cb88b | 954 | brelse(fe_bh); |
a81cb88b | 955 | brelse(parent_node_bh); |
4a12ca3a MF |
956 | |
957 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
958 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd MF |
959 | |
960 | mlog_exit(status); | |
961 | ||
962 | return status; | |
963 | } | |
964 | ||
965 | /* | |
966 | * The only place this should be used is rename! | |
967 | * if they have the same id, then the 1st one is the only one locked. | |
968 | */ | |
969 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
970 | struct buffer_head **bh1, |
971 | struct inode *inode1, | |
972 | struct buffer_head **bh2, | |
973 | struct inode *inode2) | |
974 | { | |
975 | int status; | |
976 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); | |
977 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
978 | struct buffer_head **tmpbh; | |
979 | struct inode *tmpinode; | |
980 | ||
b0697053 MF |
981 | mlog_entry("(inode1 = %llu, inode2 = %llu)\n", |
982 | (unsigned long long)oi1->ip_blkno, | |
983 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 984 | |
ccd979bd MF |
985 | if (*bh1) |
986 | *bh1 = NULL; | |
987 | if (*bh2) | |
988 | *bh2 = NULL; | |
989 | ||
990 | /* we always want to lock the one with the lower lockid first. */ | |
991 | if (oi1->ip_blkno != oi2->ip_blkno) { | |
992 | if (oi1->ip_blkno < oi2->ip_blkno) { | |
993 | /* switch id1 and id2 around */ | |
994 | mlog(0, "switching them around...\n"); | |
995 | tmpbh = bh2; | |
996 | bh2 = bh1; | |
997 | bh1 = tmpbh; | |
998 | ||
999 | tmpinode = inode2; | |
1000 | inode2 = inode1; | |
1001 | inode1 = tmpinode; | |
1002 | } | |
1003 | /* lock id2 */ | |
cb25797d JK |
1004 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
1005 | OI_LS_RENAME1); | |
ccd979bd MF |
1006 | if (status < 0) { |
1007 | if (status != -ENOENT) | |
1008 | mlog_errno(status); | |
1009 | goto bail; | |
1010 | } | |
1011 | } | |
8d5596c6 | 1012 | |
ccd979bd | 1013 | /* lock id1 */ |
cb25797d | 1014 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, OI_LS_RENAME2); |
ccd979bd | 1015 | if (status < 0) { |
8d5596c6 MF |
1016 | /* |
1017 | * An error return must mean that no cluster locks | |
1018 | * were held on function exit. | |
1019 | */ | |
1020 | if (oi1->ip_blkno != oi2->ip_blkno) | |
e63aecb6 | 1021 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 | 1022 | |
ccd979bd MF |
1023 | if (status != -ENOENT) |
1024 | mlog_errno(status); | |
ccd979bd | 1025 | } |
8d5596c6 | 1026 | |
ccd979bd MF |
1027 | bail: |
1028 | mlog_exit(status); | |
1029 | return status; | |
1030 | } | |
1031 | ||
8d5596c6 MF |
1032 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
1033 | { | |
e63aecb6 | 1034 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
1035 | |
1036 | if (inode1 != inode2) | |
e63aecb6 | 1037 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1038 | } |
1039 | ||
ccd979bd MF |
1040 | static int ocfs2_rename(struct inode *old_dir, |
1041 | struct dentry *old_dentry, | |
1042 | struct inode *new_dir, | |
1043 | struct dentry *new_dentry) | |
1044 | { | |
4a12ca3a MF |
1045 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1046 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
ccd979bd MF |
1047 | struct inode *old_inode = old_dentry->d_inode; |
1048 | struct inode *new_inode = new_dentry->d_inode; | |
5098c27b | 1049 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1050 | struct ocfs2_dinode *newfe = NULL; |
1051 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
ccd979bd | 1052 | struct buffer_head *newfe_bh = NULL; |
592282cf | 1053 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd | 1054 | struct ocfs2_super *osb = NULL; |
5b6a3a2b | 1055 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1056 | handle_t *handle = NULL; |
ccd979bd MF |
1057 | struct buffer_head *old_dir_bh = NULL; |
1058 | struct buffer_head *new_dir_bh = NULL; | |
592282cf | 1059 | nlink_t old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1060 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1061 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1062 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1063 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1064 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1065 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
ccd979bd MF |
1066 | |
1067 | /* At some point it might be nice to break this function up a | |
1068 | * bit. */ | |
1069 | ||
1070 | mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p, from='%.*s' to='%.*s')\n", | |
1071 | old_dir, old_dentry, new_dir, new_dentry, | |
1072 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1073 | new_dentry->d_name.len, new_dentry->d_name.name); | |
1074 | ||
871a2931 CH |
1075 | dquot_initialize(old_dir); |
1076 | dquot_initialize(new_dir); | |
907f4554 | 1077 | |
ccd979bd MF |
1078 | osb = OCFS2_SB(old_dir->i_sb); |
1079 | ||
1080 | if (new_inode) { | |
1081 | if (!igrab(new_inode)) | |
1082 | BUG(); | |
1083 | } | |
1084 | ||
1b3c3714 | 1085 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1086 | * a/b/c |
1087 | * a/d | |
1088 | * a,b,c, and d are all directories. | |
1089 | * | |
1090 | * from cwd of 'a' on both nodes: | |
1091 | * node1: mv b/c d | |
1092 | * node2: mv d b/c | |
1093 | * | |
1094 | * And that's why, just like the VFS, we need a file system | |
1095 | * rename lock. */ | |
5dabd695 | 1096 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1097 | status = ocfs2_rename_lock(osb); |
1098 | if (status < 0) { | |
1099 | mlog_errno(status); | |
1100 | goto bail; | |
1101 | } | |
1102 | rename_lock = 1; | |
1103 | } | |
1104 | ||
ccd979bd | 1105 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 MF |
1106 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
1107 | &new_dir_bh, new_dir); | |
ccd979bd MF |
1108 | if (status < 0) { |
1109 | mlog_errno(status); | |
1110 | goto bail; | |
1111 | } | |
8d5596c6 | 1112 | parents_locked = 1; |
ccd979bd MF |
1113 | |
1114 | /* make sure both dirs have bhs | |
1115 | * get an extra ref on old_dir_bh if old==new */ | |
1116 | if (!new_dir_bh) { | |
1117 | if (old_dir_bh) { | |
1118 | new_dir_bh = old_dir_bh; | |
1119 | get_bh(new_dir_bh); | |
1120 | } else { | |
1121 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1122 | status = -EIO; | |
1123 | goto bail; | |
1124 | } | |
1125 | } | |
1126 | ||
379dfe9d | 1127 | /* |
592282cf | 1128 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1129 | * also ensures that the downconvert thread on other nodes |
1130 | * won't have to concurrently downconvert the inode and the | |
1131 | * dentry locks. | |
379dfe9d | 1132 | */ |
cb25797d JK |
1133 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
1134 | OI_LS_PARENT); | |
379dfe9d MF |
1135 | if (status < 0) { |
1136 | if (status != -ENOENT) | |
ccd979bd | 1137 | mlog_errno(status); |
379dfe9d MF |
1138 | goto bail; |
1139 | } | |
8d5596c6 | 1140 | old_child_locked = 1; |
ccd979bd | 1141 | |
379dfe9d MF |
1142 | status = ocfs2_remote_dentry_delete(old_dentry); |
1143 | if (status < 0) { | |
1144 | mlog_errno(status); | |
1145 | goto bail; | |
1146 | } | |
1147 | ||
1148 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1149 | u64 old_inode_parent; |
1150 | ||
4a12ca3a | 1151 | update_dot_dot = 1; |
38760e24 | 1152 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1153 | old_inode, |
1154 | &old_inode_dot_dot_res); | |
38760e24 MF |
1155 | if (status) { |
1156 | status = -EIO; | |
ccd979bd | 1157 | goto bail; |
38760e24 | 1158 | } |
ccd979bd | 1159 | |
38760e24 MF |
1160 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1161 | status = -EIO; | |
ccd979bd | 1162 | goto bail; |
38760e24 MF |
1163 | } |
1164 | ||
1165 | if (!new_inode && new_dir != old_dir && | |
198a1ca3 | 1166 | new_dir->i_nlink >= ocfs2_link_max(osb)) { |
38760e24 | 1167 | status = -EMLINK; |
ccd979bd | 1168 | goto bail; |
38760e24 | 1169 | } |
ccd979bd MF |
1170 | } |
1171 | ||
5b6a3a2b MF |
1172 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1173 | old_dentry->d_name.len, | |
1174 | &old_de_ino); | |
1175 | if (status) { | |
1176 | status = -ENOENT; | |
ccd979bd | 1177 | goto bail; |
5b6a3a2b | 1178 | } |
ccd979bd MF |
1179 | |
1180 | /* | |
1181 | * Check for inode number is _not_ due to possible IO errors. | |
1182 | * We might rmdir the source, keep it as pwd of some process | |
1183 | * and merrily kill the link to whatever was created under the | |
1184 | * same name. Goodbye sticky bit ;-< | |
1185 | */ | |
5b6a3a2b MF |
1186 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1187 | status = -ENOENT; | |
ccd979bd | 1188 | goto bail; |
5b6a3a2b | 1189 | } |
ccd979bd MF |
1190 | |
1191 | /* check if the target already exists (in which case we need | |
1192 | * to delete it */ | |
1193 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1194 | new_dentry->d_name.len, | |
4a12ca3a MF |
1195 | &newfe_blkno, new_dir, |
1196 | &target_lookup_res); | |
ccd979bd MF |
1197 | /* The only error we allow here is -ENOENT because the new |
1198 | * file not existing is perfectly valid. */ | |
1199 | if ((status < 0) && (status != -ENOENT)) { | |
1200 | /* If we cannot find the file specified we should just */ | |
1201 | /* return the error... */ | |
1202 | mlog_errno(status); | |
1203 | goto bail; | |
1204 | } | |
4a12ca3a MF |
1205 | if (status == 0) |
1206 | target_exists = 1; | |
ccd979bd | 1207 | |
4a12ca3a | 1208 | if (!target_exists && new_inode) { |
e325a88f SE |
1209 | /* |
1210 | * Target was unlinked by another node while we were | |
1211 | * waiting to get to ocfs2_rename(). There isn't | |
1212 | * anything we can do here to help the situation, so | |
1213 | * bubble up the appropriate error. | |
1214 | */ | |
1215 | status = -ENOENT; | |
1216 | goto bail; | |
1217 | } | |
ccd979bd MF |
1218 | |
1219 | /* In case we need to overwrite an existing file, we blow it | |
1220 | * away first */ | |
4a12ca3a | 1221 | if (target_exists) { |
ccd979bd MF |
1222 | /* VFS didn't think there existed an inode here, but |
1223 | * someone else in the cluster must have raced our | |
1224 | * rename to create one. Today we error cleanly, in | |
1225 | * the future we should consider calling iget to build | |
1226 | * a new struct inode for this entry. */ | |
1227 | if (!new_inode) { | |
1228 | status = -EACCES; | |
1229 | ||
1230 | mlog(0, "We found an inode for name %.*s but VFS " | |
1231 | "didn't give us one.\n", new_dentry->d_name.len, | |
1232 | new_dentry->d_name.name); | |
1233 | goto bail; | |
1234 | } | |
1235 | ||
1236 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1237 | status = -EACCES; | |
1238 | ||
b0697053 MF |
1239 | mlog(0, "Inode %llu and dir %llu disagree. flags = %x\n", |
1240 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, | |
1241 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1242 | OCFS2_I(new_inode)->ip_flags); |
1243 | goto bail; | |
1244 | } | |
1245 | ||
e63aecb6 | 1246 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1247 | if (status < 0) { |
1248 | if (status != -ENOENT) | |
1249 | mlog_errno(status); | |
1250 | goto bail; | |
1251 | } | |
8d5596c6 | 1252 | new_child_locked = 1; |
ccd979bd | 1253 | |
379dfe9d | 1254 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1255 | if (status < 0) { |
1256 | mlog_errno(status); | |
1257 | goto bail; | |
1258 | } | |
1259 | ||
1260 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1261 | ||
4a12ca3a MF |
1262 | mlog(0, "aha rename over existing... new_blkno=%llu " |
1263 | "newfebh=%p bhblocknr=%llu\n", | |
b0697053 | 1264 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1265 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1266 | ||
1267 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1268 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
19bd341f TM |
1269 | OCFS2_I(new_inode)->ip_blkno, |
1270 | orphan_name, &orphan_insert); | |
ccd979bd MF |
1271 | if (status < 0) { |
1272 | mlog_errno(status); | |
1273 | goto bail; | |
1274 | } | |
1275 | } | |
1276 | } else { | |
1277 | BUG_ON(new_dentry->d_parent->d_inode != new_dir); | |
1278 | ||
1279 | status = ocfs2_check_dir_for_entry(new_dir, | |
1280 | new_dentry->d_name.name, | |
1281 | new_dentry->d_name.len); | |
1282 | if (status) | |
1283 | goto bail; | |
1284 | ||
1285 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1286 | new_dentry->d_name.name, | |
1287 | new_dentry->d_name.len, | |
4a12ca3a | 1288 | &target_insert); |
ccd979bd MF |
1289 | if (status < 0) { |
1290 | mlog_errno(status); | |
1291 | goto bail; | |
1292 | } | |
1293 | } | |
1294 | ||
a90714c1 | 1295 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1296 | if (IS_ERR(handle)) { |
1297 | status = PTR_ERR(handle); | |
1298 | handle = NULL; | |
1299 | mlog_errno(status); | |
1300 | goto bail; | |
1301 | } | |
1302 | ||
4a12ca3a | 1303 | if (target_exists) { |
ccd979bd | 1304 | if (S_ISDIR(new_inode->i_mode)) { |
b80b549c MF |
1305 | if (new_inode->i_nlink != 2 || |
1306 | !ocfs2_empty_dir(new_inode)) { | |
ccd979bd MF |
1307 | status = -ENOTEMPTY; |
1308 | goto bail; | |
1309 | } | |
1310 | } | |
0cf2f763 JB |
1311 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
1312 | newfe_bh, | |
13723d00 | 1313 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1314 | if (status < 0) { |
1315 | mlog_errno(status); | |
1316 | goto bail; | |
1317 | } | |
1318 | ||
1319 | if (S_ISDIR(new_inode->i_mode) || | |
198a1ca3 | 1320 | (ocfs2_read_links_count(newfe) == 1)) { |
ccd979bd | 1321 | status = ocfs2_orphan_add(osb, handle, new_inode, |
3939fda4 | 1322 | newfe_bh, orphan_name, |
4a12ca3a | 1323 | &orphan_insert, orphan_dir); |
ccd979bd MF |
1324 | if (status < 0) { |
1325 | mlog_errno(status); | |
1326 | goto bail; | |
1327 | } | |
1328 | } | |
1329 | ||
1330 | /* change the dirent to point to the correct inode */ | |
4a12ca3a MF |
1331 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1332 | old_inode); | |
ccd979bd MF |
1333 | if (status < 0) { |
1334 | mlog_errno(status); | |
1335 | goto bail; | |
1336 | } | |
ccd979bd | 1337 | new_dir->i_version++; |
ccd979bd MF |
1338 | |
1339 | if (S_ISDIR(new_inode->i_mode)) | |
198a1ca3 | 1340 | ocfs2_set_links_count(newfe, 0); |
ccd979bd | 1341 | else |
198a1ca3 | 1342 | ocfs2_add_links_count(newfe, -1); |
ec20cec7 | 1343 | ocfs2_journal_dirty(handle, newfe_bh); |
ccd979bd MF |
1344 | } else { |
1345 | /* if the name was not found in new_dir, add it now */ | |
1346 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1347 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1348 | new_dir_bh, &target_insert); |
ccd979bd MF |
1349 | } |
1350 | ||
1351 | old_inode->i_ctime = CURRENT_TIME; | |
1352 | mark_inode_dirty(old_inode); | |
480214d7 | 1353 | |
0cf2f763 JB |
1354 | status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), |
1355 | old_inode_bh, | |
13723d00 | 1356 | OCFS2_JOURNAL_ACCESS_WRITE); |
480214d7 SM |
1357 | if (status >= 0) { |
1358 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1359 | ||
1360 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); | |
1361 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); | |
ec20cec7 | 1362 | ocfs2_journal_dirty(handle, old_inode_bh); |
480214d7 SM |
1363 | } else |
1364 | mlog_errno(status); | |
ccd979bd | 1365 | |
5b6a3a2b MF |
1366 | /* |
1367 | * Now that the name has been added to new_dir, remove the old name. | |
1368 | * | |
1369 | * We don't keep any directory entry context around until now | |
1370 | * because the insert might have changed the type of directory | |
1371 | * we're dealing with. | |
1372 | */ | |
4a12ca3a MF |
1373 | status = ocfs2_find_entry(old_dentry->d_name.name, |
1374 | old_dentry->d_name.len, old_dir, | |
1375 | &old_entry_lookup); | |
1376 | if (status) | |
5b6a3a2b | 1377 | goto bail; |
5b6a3a2b | 1378 | |
4a12ca3a | 1379 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
ccd979bd MF |
1380 | if (status < 0) { |
1381 | mlog_errno(status); | |
1382 | goto bail; | |
1383 | } | |
1384 | ||
1385 | if (new_inode) { | |
1386 | new_inode->i_nlink--; | |
1387 | new_inode->i_ctime = CURRENT_TIME; | |
1388 | } | |
1389 | old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME; | |
4a12ca3a MF |
1390 | |
1391 | if (update_dot_dot) { | |
1392 | status = ocfs2_update_entry(old_inode, handle, | |
1393 | &old_inode_dot_dot_res, new_dir); | |
ccd979bd MF |
1394 | old_dir->i_nlink--; |
1395 | if (new_inode) { | |
1396 | new_inode->i_nlink--; | |
1397 | } else { | |
d8c76e6f | 1398 | inc_nlink(new_dir); |
ccd979bd MF |
1399 | mark_inode_dirty(new_dir); |
1400 | } | |
1401 | } | |
1402 | mark_inode_dirty(old_dir); | |
592282cf MF |
1403 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1404 | if (new_inode) { | |
ccd979bd | 1405 | mark_inode_dirty(new_inode); |
592282cf MF |
1406 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1407 | } | |
ccd979bd | 1408 | |
592282cf MF |
1409 | if (old_dir != new_dir) { |
1410 | /* Keep the same times on both directories.*/ | |
1411 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; | |
1412 | ||
1413 | /* | |
1414 | * This will also pick up the i_nlink change from the | |
1415 | * block above. | |
1416 | */ | |
1417 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1418 | } | |
ccd979bd MF |
1419 | |
1420 | if (old_dir_nlink != old_dir->i_nlink) { | |
1421 | if (!old_dir_bh) { | |
1422 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1423 | "%llu from %d to %d but bh is NULL!\n", |
1424 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1425 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1426 | } else { |
1427 | struct ocfs2_dinode *fe; | |
0cf2f763 JB |
1428 | status = ocfs2_journal_access_di(handle, |
1429 | INODE_CACHE(old_dir), | |
1430 | old_dir_bh, | |
1431 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd | 1432 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
198a1ca3 | 1433 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
ec20cec7 | 1434 | ocfs2_journal_dirty(handle, old_dir_bh); |
ccd979bd MF |
1435 | } |
1436 | } | |
379dfe9d | 1437 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1438 | status = 0; |
1439 | bail: | |
1440 | if (rename_lock) | |
1441 | ocfs2_rename_unlock(osb); | |
1442 | ||
1443 | if (handle) | |
02dc1af4 | 1444 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1445 | |
8d5596c6 MF |
1446 | if (parents_locked) |
1447 | ocfs2_double_unlock(old_dir, new_dir); | |
1448 | ||
1449 | if (old_child_locked) | |
e63aecb6 | 1450 | ocfs2_inode_unlock(old_inode, 1); |
8d5596c6 MF |
1451 | |
1452 | if (new_child_locked) | |
e63aecb6 | 1453 | ocfs2_inode_unlock(new_inode, 1); |
8d5596c6 | 1454 | |
5098c27b MF |
1455 | if (orphan_dir) { |
1456 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1457 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
1458 | mutex_unlock(&orphan_dir->i_mutex); |
1459 | iput(orphan_dir); | |
1460 | } | |
1461 | ||
ccd979bd MF |
1462 | if (new_inode) |
1463 | sync_mapping_buffers(old_inode->i_mapping); | |
1464 | ||
1465 | if (new_inode) | |
1466 | iput(new_inode); | |
4a12ca3a MF |
1467 | |
1468 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1469 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1470 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1471 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1472 | ocfs2_free_dir_lookup_result(&target_insert); | |
1473 | ||
a81cb88b MF |
1474 | brelse(newfe_bh); |
1475 | brelse(old_inode_bh); | |
1476 | brelse(old_dir_bh); | |
1477 | brelse(new_dir_bh); | |
ccd979bd MF |
1478 | |
1479 | mlog_exit(status); | |
1480 | ||
1481 | return status; | |
1482 | } | |
1483 | ||
1484 | /* | |
1485 | * we expect i_size = strlen(symname). Copy symname into the file | |
1486 | * data, including the null terminator. | |
1487 | */ | |
1488 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1489 | handle_t *handle, |
ccd979bd MF |
1490 | struct inode *inode, |
1491 | const char *symname) | |
1492 | { | |
1493 | struct buffer_head **bhs = NULL; | |
1494 | const char *c; | |
1495 | struct super_block *sb = osb->sb; | |
4f902c37 | 1496 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1497 | int virtual, blocks, status, i, bytes_left; |
1498 | ||
1499 | bytes_left = i_size_read(inode) + 1; | |
1500 | /* we can't trust i_blocks because we're actually going to | |
1501 | * write i_size + 1 bytes. */ | |
1502 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1503 | ||
5515eff8 AM |
1504 | mlog_entry("i_blocks = %llu, i_size = %llu, blocks = %d\n", |
1505 | (unsigned long long)inode->i_blocks, | |
1506 | i_size_read(inode), blocks); | |
ccd979bd MF |
1507 | |
1508 | /* Sanity check -- make sure we're going to fit. */ | |
1509 | if (bytes_left > | |
1510 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1511 | status = -EIO; | |
1512 | mlog_errno(status); | |
1513 | goto bail; | |
1514 | } | |
1515 | ||
1516 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1517 | if (!bhs) { | |
1518 | status = -ENOMEM; | |
1519 | mlog_errno(status); | |
1520 | goto bail; | |
1521 | } | |
1522 | ||
49cb8d2d MF |
1523 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1524 | NULL); | |
ccd979bd MF |
1525 | if (status < 0) { |
1526 | mlog_errno(status); | |
1527 | goto bail; | |
1528 | } | |
1529 | ||
1530 | /* links can never be larger than one cluster so we know this | |
1531 | * is all going to be contiguous, but do a sanity check | |
1532 | * anyway. */ | |
1533 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1534 | status = -EIO; | |
1535 | mlog_errno(status); | |
1536 | goto bail; | |
1537 | } | |
1538 | ||
1539 | virtual = 0; | |
1540 | while(bytes_left > 0) { | |
1541 | c = &symname[virtual * sb->s_blocksize]; | |
1542 | ||
1543 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1544 | if (!bhs[virtual]) { | |
1545 | status = -ENOMEM; | |
1546 | mlog_errno(status); | |
1547 | goto bail; | |
1548 | } | |
8cb471e8 JB |
1549 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
1550 | bhs[virtual]); | |
ccd979bd | 1551 | |
0cf2f763 JB |
1552 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
1553 | bhs[virtual], | |
ccd979bd MF |
1554 | OCFS2_JOURNAL_ACCESS_CREATE); |
1555 | if (status < 0) { | |
1556 | mlog_errno(status); | |
1557 | goto bail; | |
1558 | } | |
1559 | ||
1560 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1561 | ||
1562 | memcpy(bhs[virtual]->b_data, c, | |
1563 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1564 | bytes_left); | |
1565 | ||
ec20cec7 | 1566 | ocfs2_journal_dirty(handle, bhs[virtual]); |
ccd979bd MF |
1567 | |
1568 | virtual++; | |
1569 | p_blkno++; | |
1570 | bytes_left -= sb->s_blocksize; | |
1571 | } | |
1572 | ||
1573 | status = 0; | |
1574 | bail: | |
1575 | ||
1576 | if (bhs) { | |
1577 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1578 | brelse(bhs[i]); |
ccd979bd MF |
1579 | kfree(bhs); |
1580 | } | |
1581 | ||
1582 | mlog_exit(status); | |
1583 | return status; | |
1584 | } | |
1585 | ||
1586 | static int ocfs2_symlink(struct inode *dir, | |
1587 | struct dentry *dentry, | |
1588 | const char *symname) | |
1589 | { | |
1590 | int status, l, credits; | |
1591 | u64 newsize; | |
1592 | struct ocfs2_super *osb = NULL; | |
1593 | struct inode *inode = NULL; | |
1594 | struct super_block *sb; | |
1595 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1596 | struct buffer_head *parent_fe_bh = NULL; |
1597 | struct ocfs2_dinode *fe = NULL; | |
1598 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1599 | handle_t *handle = NULL; |
ccd979bd MF |
1600 | struct ocfs2_alloc_context *inode_ac = NULL; |
1601 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1602 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1603 | int want_clusters = 0; | |
1604 | int xattr_credits = 0; | |
1605 | struct ocfs2_security_xattr_info si = { | |
1606 | .enable = 1, | |
1607 | }; | |
a90714c1 | 1608 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1609 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
1610 | sigset_t oldset; |
1611 | int did_block_signals = 0; | |
ccd979bd MF |
1612 | |
1613 | mlog_entry("(0x%p, 0x%p, symname='%s' actual='%.*s')\n", dir, | |
1614 | dentry, symname, dentry->d_name.len, dentry->d_name.name); | |
1615 | ||
871a2931 | 1616 | dquot_initialize(dir); |
907f4554 | 1617 | |
ccd979bd MF |
1618 | sb = dir->i_sb; |
1619 | osb = OCFS2_SB(sb); | |
1620 | ||
1621 | l = strlen(symname) + 1; | |
1622 | ||
1623 | credits = ocfs2_calc_symlink_credits(sb); | |
1624 | ||
ccd979bd | 1625 | /* lock the parent directory */ |
e63aecb6 | 1626 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1627 | if (status < 0) { |
1628 | if (status != -ENOENT) | |
1629 | mlog_errno(status); | |
6d8fc40e | 1630 | return status; |
ccd979bd MF |
1631 | } |
1632 | ||
1633 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
198a1ca3 | 1634 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
1635 | /* can't make a file in a deleted directory. */ |
1636 | status = -ENOENT; | |
1637 | goto bail; | |
1638 | } | |
1639 | ||
1640 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1641 | dentry->d_name.len); | |
1642 | if (status) | |
1643 | goto bail; | |
1644 | ||
1645 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1646 | dentry->d_name.name, | |
4a12ca3a | 1647 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1648 | if (status < 0) { |
1649 | mlog_errno(status); | |
1650 | goto bail; | |
1651 | } | |
1652 | ||
da5cbf2f | 1653 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1654 | if (status < 0) { |
1655 | if (status != -ENOSPC) | |
1656 | mlog_errno(status); | |
1657 | goto bail; | |
1658 | } | |
1659 | ||
f5d36202 TY |
1660 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
1661 | if (!inode) { | |
1662 | status = -ENOMEM; | |
1663 | mlog_errno(status); | |
1664 | goto bail; | |
1665 | } | |
1666 | ||
534eaddd | 1667 | /* get security xattr */ |
2a7dba39 | 1668 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
1669 | if (status) { |
1670 | if (status == -EOPNOTSUPP) | |
1671 | si.enable = 0; | |
1672 | else { | |
1673 | mlog_errno(status); | |
1674 | goto bail; | |
1675 | } | |
1676 | } | |
1677 | ||
1678 | /* calculate meta data/clusters for setting security xattr */ | |
1679 | if (si.enable) { | |
1680 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1681 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1682 | if (status < 0) { |
534eaddd | 1683 | mlog_errno(status); |
ccd979bd MF |
1684 | goto bail; |
1685 | } | |
1686 | } | |
1687 | ||
534eaddd TY |
1688 | /* don't reserve bitmap space for fast symlinks. */ |
1689 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1690 | want_clusters += 1; | |
1691 | ||
1692 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1693 | if (status < 0) { | |
1694 | if (status != -ENOSPC) | |
1695 | mlog_errno(status); | |
1696 | goto bail; | |
1697 | } | |
1698 | ||
1699 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1700 | if (IS_ERR(handle)) { |
1701 | status = PTR_ERR(handle); | |
1702 | handle = NULL; | |
1703 | mlog_errno(status); | |
1704 | goto bail; | |
1705 | } | |
1706 | ||
547ba7c8 JB |
1707 | /* Starting to change things, restart is no longer possible. */ |
1708 | ocfs2_block_signals(&oldset); | |
1709 | did_block_signals = 1; | |
1710 | ||
63936dda CH |
1711 | status = dquot_alloc_inode(inode); |
1712 | if (status) | |
a90714c1 | 1713 | goto bail; |
a90714c1 JK |
1714 | did_quota_inode = 1; |
1715 | ||
19bd341f TM |
1716 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, |
1717 | inode->i_mode, dentry->d_name.len, | |
1718 | dentry->d_name.name); | |
1719 | ||
1720 | status = ocfs2_mknod_locked(osb, dir, inode, | |
f5d36202 TY |
1721 | 0, &new_fe_bh, parent_fe_bh, handle, |
1722 | inode_ac); | |
ccd979bd MF |
1723 | if (status < 0) { |
1724 | mlog_errno(status); | |
1725 | goto bail; | |
1726 | } | |
1727 | ||
1728 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1729 | inode->i_rdev = 0; | |
1730 | newsize = l - 1; | |
1731 | if (l > ocfs2_fast_symlink_chars(sb)) { | |
dcd0538f MF |
1732 | u32 offset = 0; |
1733 | ||
ccd979bd | 1734 | inode->i_op = &ocfs2_symlink_inode_operations; |
5dd4056d CH |
1735 | status = dquot_alloc_space_nodirty(inode, |
1736 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1737 | if (status) | |
a90714c1 | 1738 | goto bail; |
a90714c1 | 1739 | did_quota = 1; |
0eb8d47e TM |
1740 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1741 | new_fe_bh, | |
1742 | handle, data_ac, NULL, | |
1743 | NULL); | |
ccd979bd MF |
1744 | if (status < 0) { |
1745 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1746 | mlog(ML_ERROR, |
1747 | "Failed to extend file to %llu\n", | |
1748 | (unsigned long long)newsize); | |
ccd979bd MF |
1749 | mlog_errno(status); |
1750 | status = -ENOSPC; | |
1751 | } | |
1752 | goto bail; | |
1753 | } | |
1754 | i_size_write(inode, newsize); | |
8110b073 | 1755 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd MF |
1756 | } else { |
1757 | inode->i_op = &ocfs2_fast_symlink_inode_operations; | |
1758 | memcpy((char *) fe->id2.i_symlink, symname, l); | |
1759 | i_size_write(inode, newsize); | |
1760 | inode->i_blocks = 0; | |
1761 | } | |
1762 | ||
1763 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1764 | if (status < 0) { | |
1765 | mlog_errno(status); | |
1766 | goto bail; | |
1767 | } | |
1768 | ||
1769 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
1770 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
1771 | symname); | |
1772 | if (status < 0) { | |
1773 | mlog_errno(status); | |
1774 | goto bail; | |
1775 | } | |
1776 | } | |
1777 | ||
534eaddd TY |
1778 | if (si.enable) { |
1779 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
1780 | xattr_ac, data_ac); | |
1781 | if (status < 0) { | |
1782 | mlog_errno(status); | |
1783 | goto bail; | |
1784 | } | |
1785 | } | |
1786 | ||
a9743fcd MF |
1787 | /* |
1788 | * Do this before adding the entry to the directory. We add | |
1789 | * also set d_op after success so that ->d_iput() will cleanup | |
1790 | * the dentry lock even if ocfs2_add_entry() fails below. | |
1791 | */ | |
1792 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); | |
1793 | if (status) { | |
ccd979bd MF |
1794 | mlog_errno(status); |
1795 | goto bail; | |
1796 | } | |
fb045adb | 1797 | d_set_d_op(dentry, &ocfs2_dentry_ops); |
ccd979bd | 1798 | |
a9743fcd MF |
1799 | status = ocfs2_add_entry(handle, dentry, inode, |
1800 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
1801 | &lookup); | |
1802 | if (status < 0) { | |
379dfe9d MF |
1803 | mlog_errno(status); |
1804 | goto bail; | |
1805 | } | |
1806 | ||
ccd979bd | 1807 | insert_inode_hash(inode); |
ccd979bd MF |
1808 | d_instantiate(dentry, inode); |
1809 | bail: | |
a90714c1 | 1810 | if (status < 0 && did_quota) |
5dd4056d | 1811 | dquot_free_space_nodirty(inode, |
a90714c1 JK |
1812 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
1813 | if (status < 0 && did_quota_inode) | |
63936dda | 1814 | dquot_free_inode(inode); |
ccd979bd | 1815 | if (handle) |
02dc1af4 | 1816 | ocfs2_commit_trans(osb, handle); |
6d8fc40e | 1817 | |
e63aecb6 | 1818 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
1819 | if (did_block_signals) |
1820 | ocfs2_unblock_signals(&oldset); | |
6d8fc40e | 1821 | |
a81cb88b MF |
1822 | brelse(new_fe_bh); |
1823 | brelse(parent_fe_bh); | |
534eaddd TY |
1824 | kfree(si.name); |
1825 | kfree(si.value); | |
4a12ca3a | 1826 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
1827 | if (inode_ac) |
1828 | ocfs2_free_alloc_context(inode_ac); | |
1829 | if (data_ac) | |
1830 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
1831 | if (xattr_ac) |
1832 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 | 1833 | if ((status < 0) && inode) { |
ab41fdc8 | 1834 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
f5d36202 | 1835 | clear_nlink(inode); |
ccd979bd | 1836 | iput(inode); |
f5d36202 | 1837 | } |
ccd979bd MF |
1838 | |
1839 | mlog_exit(status); | |
1840 | ||
1841 | return status; | |
1842 | } | |
1843 | ||
ccd979bd MF |
1844 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
1845 | { | |
1846 | int status, namelen; | |
1847 | ||
1848 | mlog_entry_void(); | |
1849 | ||
b0697053 MF |
1850 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
1851 | (long long)blkno); | |
ccd979bd MF |
1852 | if (namelen <= 0) { |
1853 | if (namelen) | |
1854 | status = namelen; | |
1855 | else | |
1856 | status = -EINVAL; | |
1857 | mlog_errno(status); | |
1858 | goto bail; | |
1859 | } | |
1860 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
1861 | status = -EINVAL; | |
1862 | mlog_errno(status); | |
1863 | goto bail; | |
1864 | } | |
1865 | ||
1866 | mlog(0, "built filename '%s' for orphan dir (len=%d)\n", name, | |
1867 | namelen); | |
1868 | ||
1869 | status = 0; | |
1870 | bail: | |
1871 | mlog_exit(status); | |
1872 | return status; | |
1873 | } | |
1874 | ||
dd43bcde MF |
1875 | static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb, |
1876 | struct inode **ret_orphan_dir, | |
1877 | struct buffer_head **ret_orphan_dir_bh) | |
ccd979bd | 1878 | { |
5098c27b | 1879 | struct inode *orphan_dir_inode; |
ccd979bd | 1880 | struct buffer_head *orphan_dir_bh = NULL; |
dd43bcde | 1881 | int ret = 0; |
ccd979bd MF |
1882 | |
1883 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
1884 | ORPHAN_DIR_SYSTEM_INODE, | |
1885 | osb->slot_num); | |
1886 | if (!orphan_dir_inode) { | |
dd43bcde MF |
1887 | ret = -ENOENT; |
1888 | mlog_errno(ret); | |
1889 | return ret; | |
ccd979bd MF |
1890 | } |
1891 | ||
5098c27b MF |
1892 | mutex_lock(&orphan_dir_inode->i_mutex); |
1893 | ||
dd43bcde MF |
1894 | ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
1895 | if (ret < 0) { | |
1896 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
1897 | iput(orphan_dir_inode); | |
1898 | ||
1899 | mlog_errno(ret); | |
1900 | return ret; | |
ccd979bd MF |
1901 | } |
1902 | ||
dd43bcde MF |
1903 | *ret_orphan_dir = orphan_dir_inode; |
1904 | *ret_orphan_dir_bh = orphan_dir_bh; | |
5098c27b | 1905 | |
dd43bcde MF |
1906 | return 0; |
1907 | } | |
1908 | ||
1909 | static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode, | |
1910 | struct buffer_head *orphan_dir_bh, | |
1911 | u64 blkno, | |
1912 | char *name, | |
1913 | struct ocfs2_dir_lookup_result *lookup) | |
1914 | { | |
1915 | int ret; | |
1916 | struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb); | |
1917 | ||
1918 | ret = ocfs2_blkno_stringify(blkno, name); | |
1919 | if (ret < 0) { | |
1920 | mlog_errno(ret); | |
1921 | return ret; | |
1922 | } | |
1923 | ||
1924 | ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
1925 | orphan_dir_bh, name, | |
1926 | OCFS2_ORPHAN_NAMELEN, lookup); | |
1927 | if (ret < 0) { | |
1928 | mlog_errno(ret); | |
1929 | return ret; | |
1930 | } | |
1931 | ||
1932 | return 0; | |
1933 | } | |
1934 | ||
1935 | /** | |
1936 | * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for | |
1937 | * insertion of an orphan. | |
1938 | * @osb: ocfs2 file system | |
1939 | * @ret_orphan_dir: Orphan dir inode - returned locked! | |
1940 | * @blkno: Actual block number of the inode to be inserted into orphan dir. | |
1941 | * @lookup: dir lookup result, to be passed back into functions like | |
1942 | * ocfs2_orphan_add | |
1943 | * | |
1944 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
1945 | * fields will be populated. | |
1946 | * | |
1947 | * Returns non-zero on failure. | |
1948 | */ | |
1949 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
1950 | struct inode **ret_orphan_dir, | |
1951 | u64 blkno, | |
1952 | char *name, | |
1953 | struct ocfs2_dir_lookup_result *lookup) | |
1954 | { | |
1955 | struct inode *orphan_dir_inode = NULL; | |
1956 | struct buffer_head *orphan_dir_bh = NULL; | |
1957 | int ret = 0; | |
1958 | ||
1959 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode, | |
1960 | &orphan_dir_bh); | |
1961 | if (ret < 0) { | |
1962 | mlog_errno(ret); | |
1963 | return ret; | |
1964 | } | |
1965 | ||
1966 | ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh, | |
1967 | blkno, name, lookup); | |
1968 | if (ret < 0) { | |
1969 | mlog_errno(ret); | |
1970 | goto out; | |
ccd979bd MF |
1971 | } |
1972 | ||
5098c27b MF |
1973 | *ret_orphan_dir = orphan_dir_inode; |
1974 | ||
dd43bcde MF |
1975 | out: |
1976 | brelse(orphan_dir_bh); | |
1977 | ||
1978 | if (ret) { | |
1979 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5098c27b | 1980 | mutex_unlock(&orphan_dir_inode->i_mutex); |
ccd979bd | 1981 | iput(orphan_dir_inode); |
5098c27b | 1982 | } |
ccd979bd | 1983 | |
dd43bcde MF |
1984 | mlog_exit(ret); |
1985 | return ret; | |
ccd979bd MF |
1986 | } |
1987 | ||
1988 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 1989 | handle_t *handle, |
ccd979bd | 1990 | struct inode *inode, |
3939fda4 | 1991 | struct buffer_head *fe_bh, |
ccd979bd | 1992 | char *name, |
4a12ca3a | 1993 | struct ocfs2_dir_lookup_result *lookup, |
5098c27b | 1994 | struct inode *orphan_dir_inode) |
ccd979bd | 1995 | { |
ccd979bd MF |
1996 | struct buffer_head *orphan_dir_bh = NULL; |
1997 | int status = 0; | |
1998 | struct ocfs2_dinode *orphan_fe; | |
3939fda4 | 1999 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; |
ccd979bd MF |
2000 | |
2001 | mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino); | |
2002 | ||
b657c95c | 2003 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
2004 | if (status < 0) { |
2005 | mlog_errno(status); | |
2006 | goto leave; | |
2007 | } | |
2008 | ||
0cf2f763 JB |
2009 | status = ocfs2_journal_access_di(handle, |
2010 | INODE_CACHE(orphan_dir_inode), | |
2011 | orphan_dir_bh, | |
13723d00 | 2012 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2013 | if (status < 0) { |
2014 | mlog_errno(status); | |
2015 | goto leave; | |
2016 | } | |
2017 | ||
2018 | /* we're a cluster, and nlink can change on disk from | |
2019 | * underneath us... */ | |
2020 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2021 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 MF |
2022 | ocfs2_add_links_count(orphan_fe, 1); |
2023 | orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe); | |
ec20cec7 | 2024 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2025 | |
2026 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
2027 | OCFS2_ORPHAN_NAMELEN, inode, | |
2028 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 2029 | orphan_dir_bh, lookup); |
ccd979bd MF |
2030 | if (status < 0) { |
2031 | mlog_errno(status); | |
2032 | goto leave; | |
2033 | } | |
2034 | ||
3939fda4 TY |
2035 | /* |
2036 | * We're going to journal the change of i_flags and i_orphaned_slot. | |
2037 | * It's safe anyway, though some callers may duplicate the journaling. | |
2038 | * Journaling within the func just make the logic look more | |
2039 | * straightforward. | |
2040 | */ | |
2041 | status = ocfs2_journal_access_di(handle, | |
2042 | INODE_CACHE(inode), | |
2043 | fe_bh, | |
2044 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2045 | if (status < 0) { | |
2046 | mlog_errno(status); | |
2047 | goto leave; | |
2048 | } | |
2049 | ||
ccd979bd | 2050 | le32_add_cpu(&fe->i_flags, OCFS2_ORPHANED_FL); |
d4cd1871 | 2051 | OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR; |
ccd979bd MF |
2052 | |
2053 | /* Record which orphan dir our inode now resides | |
2054 | * in. delete_inode will use this to determine which orphan | |
2055 | * dir to lock. */ | |
50008630 | 2056 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); |
ccd979bd | 2057 | |
3939fda4 TY |
2058 | ocfs2_journal_dirty(handle, fe_bh); |
2059 | ||
b0697053 MF |
2060 | mlog(0, "Inode %llu orphaned in slot %d\n", |
2061 | (unsigned long long)OCFS2_I(inode)->ip_blkno, osb->slot_num); | |
ccd979bd MF |
2062 | |
2063 | leave: | |
a81cb88b | 2064 | brelse(orphan_dir_bh); |
ccd979bd MF |
2065 | |
2066 | mlog_exit(status); | |
2067 | return status; | |
2068 | } | |
2069 | ||
2070 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
2071 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 2072 | handle_t *handle, |
ccd979bd MF |
2073 | struct inode *orphan_dir_inode, |
2074 | struct inode *inode, | |
2075 | struct buffer_head *orphan_dir_bh) | |
2076 | { | |
2077 | char name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2078 | struct ocfs2_dinode *orphan_fe; | |
2079 | int status = 0; | |
4a12ca3a | 2080 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
2081 | |
2082 | mlog_entry_void(); | |
2083 | ||
2084 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
2085 | if (status < 0) { | |
2086 | mlog_errno(status); | |
2087 | goto leave; | |
2088 | } | |
2089 | ||
b0697053 MF |
2090 | mlog(0, "removing '%s' from orphan dir %llu (namelen=%d)\n", |
2091 | name, (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
2092 | OCFS2_ORPHAN_NAMELEN); | |
ccd979bd MF |
2093 | |
2094 | /* find it's spot in the orphan directory */ | |
4a12ca3a MF |
2095 | status = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, orphan_dir_inode, |
2096 | &lookup); | |
2097 | if (status) { | |
ccd979bd MF |
2098 | mlog_errno(status); |
2099 | goto leave; | |
2100 | } | |
2101 | ||
2102 | /* remove it from the orphan directory */ | |
4a12ca3a | 2103 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
2104 | if (status < 0) { |
2105 | mlog_errno(status); | |
2106 | goto leave; | |
2107 | } | |
2108 | ||
0cf2f763 JB |
2109 | status = ocfs2_journal_access_di(handle, |
2110 | INODE_CACHE(orphan_dir_inode), | |
2111 | orphan_dir_bh, | |
13723d00 | 2112 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2113 | if (status < 0) { |
2114 | mlog_errno(status); | |
2115 | goto leave; | |
2116 | } | |
2117 | ||
2118 | /* do the i_nlink dance! :) */ | |
2119 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2120 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 MF |
2121 | ocfs2_add_links_count(orphan_fe, -1); |
2122 | orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe); | |
ec20cec7 | 2123 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2124 | |
2125 | leave: | |
4a12ca3a | 2126 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
2127 | |
2128 | mlog_exit(status); | |
2129 | return status; | |
2130 | } | |
2131 | ||
97b8f4a9 MF |
2132 | /** |
2133 | * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to recieve a newly | |
2134 | * allocated file. This is different from the typical 'add to orphan dir' | |
2135 | * operation in that the inode does not yet exist. This is a problem because | |
2136 | * the orphan dir stringifies the inode block number to come up with it's | |
2137 | * dirent. Obviously if the inode does not yet exist we have a chicken and egg | |
2138 | * problem. This function works around it by calling deeper into the orphan | |
2139 | * and suballoc code than other callers. Use this only by necessity. | |
2140 | * @dir: The directory which this inode will ultimately wind up under - not the | |
2141 | * orphan dir! | |
2142 | * @dir_bh: buffer_head the @dir inode block | |
2143 | * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled | |
2144 | * with the string to be used for orphan dirent. Pass back to the orphan dir | |
2145 | * code. | |
2146 | * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan | |
2147 | * dir code. | |
2148 | * @ret_di_blkno: block number where the new inode will be allocated. | |
2149 | * @orphan_insert: Dir insert context to be passed back into orphan dir code. | |
2150 | * @ret_inode_ac: Inode alloc context to be passed back to the allocator. | |
2151 | * | |
2152 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2153 | * fields will be populated. | |
2154 | * | |
2155 | * Returns non-zero on failure. | |
2156 | */ | |
2157 | static int ocfs2_prep_new_orphaned_file(struct inode *dir, | |
2158 | struct buffer_head *dir_bh, | |
2159 | char *orphan_name, | |
2160 | struct inode **ret_orphan_dir, | |
2161 | u64 *ret_di_blkno, | |
2162 | struct ocfs2_dir_lookup_result *orphan_insert, | |
2163 | struct ocfs2_alloc_context **ret_inode_ac) | |
2164 | { | |
2165 | int ret; | |
2166 | u64 di_blkno; | |
2167 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2168 | struct inode *orphan_dir = NULL; | |
2169 | struct buffer_head *orphan_dir_bh = NULL; | |
2170 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2171 | ||
2172 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh); | |
2173 | if (ret < 0) { | |
2174 | mlog_errno(ret); | |
2175 | return ret; | |
2176 | } | |
2177 | ||
2178 | /* reserve an inode spot */ | |
2179 | ret = ocfs2_reserve_new_inode(osb, &inode_ac); | |
2180 | if (ret < 0) { | |
2181 | if (ret != -ENOSPC) | |
2182 | mlog_errno(ret); | |
2183 | goto out; | |
2184 | } | |
2185 | ||
2186 | ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac, | |
2187 | &di_blkno); | |
2188 | if (ret) { | |
2189 | mlog_errno(ret); | |
2190 | goto out; | |
2191 | } | |
2192 | ||
2193 | ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh, | |
2194 | di_blkno, orphan_name, orphan_insert); | |
2195 | if (ret < 0) { | |
2196 | mlog_errno(ret); | |
2197 | goto out; | |
2198 | } | |
2199 | ||
2200 | out: | |
2201 | if (ret == 0) { | |
2202 | *ret_orphan_dir = orphan_dir; | |
2203 | *ret_di_blkno = di_blkno; | |
2204 | *ret_inode_ac = inode_ac; | |
2205 | /* | |
2206 | * orphan_name and orphan_insert are already up to | |
2207 | * date via prepare_orphan_dir | |
2208 | */ | |
2209 | } else { | |
2210 | /* Unroll reserve_new_inode* */ | |
2211 | if (inode_ac) | |
2212 | ocfs2_free_alloc_context(inode_ac); | |
2213 | ||
2214 | /* Unroll orphan dir locking */ | |
2215 | mutex_unlock(&orphan_dir->i_mutex); | |
2216 | ocfs2_inode_unlock(orphan_dir, 1); | |
2217 | iput(orphan_dir); | |
2218 | } | |
2219 | ||
2220 | brelse(orphan_dir_bh); | |
2221 | ||
2222 | return 0; | |
2223 | } | |
2224 | ||
bc13d347 TM |
2225 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
2226 | int mode, | |
2227 | struct inode **new_inode) | |
2228 | { | |
2229 | int status, did_quota_inode = 0; | |
2230 | struct inode *inode = NULL; | |
2231 | struct inode *orphan_dir = NULL; | |
2232 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2233 | struct ocfs2_dinode *di = NULL; | |
2234 | handle_t *handle = NULL; | |
2235 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2236 | struct buffer_head *parent_di_bh = NULL; | |
2237 | struct buffer_head *new_di_bh = NULL; | |
2238 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2239 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
97b8f4a9 MF |
2240 | u64 uninitialized_var(di_blkno), suballoc_loc; |
2241 | u16 suballoc_bit; | |
bc13d347 TM |
2242 | |
2243 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2244 | if (status < 0) { | |
2245 | if (status != -ENOENT) | |
2246 | mlog_errno(status); | |
2247 | return status; | |
2248 | } | |
2249 | ||
97b8f4a9 MF |
2250 | status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh, |
2251 | orphan_name, &orphan_dir, | |
2252 | &di_blkno, &orphan_insert, &inode_ac); | |
bc13d347 TM |
2253 | if (status < 0) { |
2254 | if (status != -ENOSPC) | |
2255 | mlog_errno(status); | |
2256 | goto leave; | |
2257 | } | |
2258 | ||
2259 | inode = ocfs2_get_init_inode(dir, mode); | |
2260 | if (!inode) { | |
2261 | status = -ENOMEM; | |
2262 | mlog_errno(status); | |
2263 | goto leave; | |
2264 | } | |
2265 | ||
2266 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); | |
2267 | if (IS_ERR(handle)) { | |
2268 | status = PTR_ERR(handle); | |
2269 | handle = NULL; | |
2270 | mlog_errno(status); | |
2271 | goto leave; | |
2272 | } | |
2273 | ||
63936dda CH |
2274 | status = dquot_alloc_inode(inode); |
2275 | if (status) | |
bc13d347 | 2276 | goto leave; |
bc13d347 TM |
2277 | did_quota_inode = 1; |
2278 | ||
97b8f4a9 MF |
2279 | status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac, |
2280 | &suballoc_loc, | |
2281 | &suballoc_bit, di_blkno); | |
bc13d347 TM |
2282 | if (status < 0) { |
2283 | mlog_errno(status); | |
2284 | goto leave; | |
2285 | } | |
2286 | ||
97b8f4a9 MF |
2287 | inode->i_nlink = 0; |
2288 | /* do the real work now. */ | |
2289 | status = __ocfs2_mknod_locked(dir, inode, | |
2290 | 0, &new_di_bh, parent_di_bh, handle, | |
2291 | inode_ac, di_blkno, suballoc_loc, | |
2292 | suballoc_bit); | |
bc13d347 TM |
2293 | if (status < 0) { |
2294 | mlog_errno(status); | |
2295 | goto leave; | |
2296 | } | |
2297 | ||
2298 | di = (struct ocfs2_dinode *)new_di_bh->b_data; | |
3939fda4 | 2299 | status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name, |
bc13d347 TM |
2300 | &orphan_insert, orphan_dir); |
2301 | if (status < 0) { | |
2302 | mlog_errno(status); | |
2303 | goto leave; | |
2304 | } | |
2305 | ||
2306 | /* get open lock so that only nodes can't remove it from orphan dir. */ | |
2307 | status = ocfs2_open_lock(inode); | |
2308 | if (status < 0) | |
2309 | mlog_errno(status); | |
2310 | ||
c7d260af | 2311 | insert_inode_hash(inode); |
bc13d347 TM |
2312 | leave: |
2313 | if (status < 0 && did_quota_inode) | |
63936dda | 2314 | dquot_free_inode(inode); |
bc13d347 TM |
2315 | if (handle) |
2316 | ocfs2_commit_trans(osb, handle); | |
2317 | ||
2318 | if (orphan_dir) { | |
2319 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
2320 | ocfs2_inode_unlock(orphan_dir, 1); | |
2321 | mutex_unlock(&orphan_dir->i_mutex); | |
2322 | iput(orphan_dir); | |
2323 | } | |
2324 | ||
2325 | if (status == -ENOSPC) | |
2326 | mlog(0, "Disk is full\n"); | |
2327 | ||
2328 | if ((status < 0) && inode) { | |
2329 | clear_nlink(inode); | |
2330 | iput(inode); | |
2331 | } | |
2332 | ||
2333 | if (inode_ac) | |
2334 | ocfs2_free_alloc_context(inode_ac); | |
2335 | ||
2336 | brelse(new_di_bh); | |
2337 | ||
2338 | if (!status) | |
2339 | *new_inode = inode; | |
2340 | ||
2341 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2342 | ||
2343 | ocfs2_inode_unlock(dir, 1); | |
2344 | brelse(parent_di_bh); | |
2345 | return status; | |
2346 | } | |
2347 | ||
2348 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, | |
2349 | struct inode *inode, | |
2350 | struct dentry *dentry) | |
2351 | { | |
2352 | int status = 0; | |
2353 | struct buffer_head *parent_di_bh = NULL; | |
2354 | handle_t *handle = NULL; | |
2355 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2356 | struct ocfs2_dinode *dir_di, *di; | |
2357 | struct inode *orphan_dir_inode = NULL; | |
2358 | struct buffer_head *orphan_dir_bh = NULL; | |
2359 | struct buffer_head *di_bh = NULL; | |
2360 | struct ocfs2_dir_lookup_result lookup = { NULL, }; | |
2361 | ||
2362 | mlog_entry("(0x%p, 0x%p, %.*s')\n", dir, dentry, | |
2363 | dentry->d_name.len, dentry->d_name.name); | |
2364 | ||
2365 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2366 | if (status < 0) { | |
2367 | if (status != -ENOENT) | |
2368 | mlog_errno(status); | |
2369 | return status; | |
2370 | } | |
2371 | ||
2372 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; | |
2373 | if (!dir_di->i_links_count) { | |
2374 | /* can't make a file in a deleted directory. */ | |
2375 | status = -ENOENT; | |
2376 | goto leave; | |
2377 | } | |
2378 | ||
2379 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
2380 | dentry->d_name.len); | |
2381 | if (status) | |
2382 | goto leave; | |
2383 | ||
2384 | /* get a spot inside the dir. */ | |
2385 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, | |
2386 | dentry->d_name.name, | |
2387 | dentry->d_name.len, &lookup); | |
2388 | if (status < 0) { | |
2389 | mlog_errno(status); | |
2390 | goto leave; | |
2391 | } | |
2392 | ||
2393 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2394 | ORPHAN_DIR_SYSTEM_INODE, | |
2395 | osb->slot_num); | |
2396 | if (!orphan_dir_inode) { | |
2397 | status = -EEXIST; | |
2398 | mlog_errno(status); | |
2399 | goto leave; | |
2400 | } | |
2401 | ||
2402 | mutex_lock(&orphan_dir_inode->i_mutex); | |
2403 | ||
2404 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2405 | if (status < 0) { | |
2406 | mlog_errno(status); | |
2407 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2408 | iput(orphan_dir_inode); | |
2409 | goto leave; | |
2410 | } | |
2411 | ||
2412 | status = ocfs2_read_inode_block(inode, &di_bh); | |
2413 | if (status < 0) { | |
2414 | mlog_errno(status); | |
2415 | goto orphan_unlock; | |
2416 | } | |
2417 | ||
2418 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); | |
2419 | if (IS_ERR(handle)) { | |
2420 | status = PTR_ERR(handle); | |
2421 | handle = NULL; | |
2422 | mlog_errno(status); | |
2423 | goto orphan_unlock; | |
2424 | } | |
2425 | ||
2426 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), | |
2427 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2428 | if (status < 0) { | |
2429 | mlog_errno(status); | |
2430 | goto out_commit; | |
2431 | } | |
2432 | ||
2433 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
2434 | orphan_dir_bh); | |
2435 | if (status < 0) { | |
2436 | mlog_errno(status); | |
2437 | goto out_commit; | |
2438 | } | |
2439 | ||
2440 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
2441 | le32_add_cpu(&di->i_flags, -OCFS2_ORPHANED_FL); | |
2442 | di->i_orphaned_slot = 0; | |
10cf1a02 TM |
2443 | inode->i_nlink = 1; |
2444 | ocfs2_set_links_count(di, inode->i_nlink); | |
bc13d347 TM |
2445 | ocfs2_journal_dirty(handle, di_bh); |
2446 | ||
2447 | status = ocfs2_add_entry(handle, dentry, inode, | |
2448 | OCFS2_I(inode)->ip_blkno, parent_di_bh, | |
2449 | &lookup); | |
2450 | if (status < 0) { | |
2451 | mlog_errno(status); | |
2452 | goto out_commit; | |
2453 | } | |
2454 | ||
2455 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
2456 | OCFS2_I(dir)->ip_blkno); | |
2457 | if (status) { | |
2458 | mlog_errno(status); | |
2459 | goto out_commit; | |
2460 | } | |
2461 | ||
fb045adb | 2462 | d_set_d_op(dentry, &ocfs2_dentry_ops); |
bc13d347 TM |
2463 | d_instantiate(dentry, inode); |
2464 | status = 0; | |
2465 | out_commit: | |
2466 | ocfs2_commit_trans(osb, handle); | |
2467 | orphan_unlock: | |
2468 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
2469 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2470 | iput(orphan_dir_inode); | |
2471 | leave: | |
2472 | ||
2473 | ocfs2_inode_unlock(dir, 1); | |
2474 | ||
2475 | brelse(di_bh); | |
2476 | brelse(parent_di_bh); | |
2477 | brelse(orphan_dir_bh); | |
2478 | ||
2479 | ocfs2_free_dir_lookup_result(&lookup); | |
2480 | ||
2481 | mlog_exit(status); | |
2482 | ||
2483 | return status; | |
2484 | } | |
2485 | ||
92e1d5be | 2486 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2487 | .create = ocfs2_create, |
2488 | .lookup = ocfs2_lookup, | |
2489 | .link = ocfs2_link, | |
2490 | .unlink = ocfs2_unlink, | |
2491 | .rmdir = ocfs2_unlink, | |
2492 | .symlink = ocfs2_symlink, | |
2493 | .mkdir = ocfs2_mkdir, | |
2494 | .mknod = ocfs2_mknod, | |
2495 | .rename = ocfs2_rename, | |
2496 | .setattr = ocfs2_setattr, | |
2497 | .getattr = ocfs2_getattr, | |
d38eb8db | 2498 | .permission = ocfs2_permission, |
cf1d6c76 TY |
2499 | .setxattr = generic_setxattr, |
2500 | .getxattr = generic_getxattr, | |
2501 | .listxattr = ocfs2_listxattr, | |
2502 | .removexattr = generic_removexattr, | |
55f4946e | 2503 | .fiemap = ocfs2_fiemap, |
ccd979bd | 2504 | }; |