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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: | |
ccd979bd MF |
150 | dentry->d_op = &ocfs2_dentry_ops; |
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 | } | |
174 | } | |
175 | ||
ccd979bd MF |
176 | bail_unlock: |
177 | /* Don't drop the cluster lock until *after* the d_add -- | |
178 | * unlink on another node will message us to remove that | |
179 | * dentry under this lock so otherwise we can race this with | |
34d024f8 | 180 | * the downconvert thread and have a stale dentry. */ |
e63aecb6 | 181 | ocfs2_inode_unlock(dir, 0); |
ccd979bd MF |
182 | |
183 | bail: | |
ccd979bd MF |
184 | |
185 | mlog_exit_ptr(ret); | |
186 | ||
187 | return ret; | |
188 | } | |
189 | ||
f5d36202 TY |
190 | static struct inode *ocfs2_get_init_inode(struct inode *dir, int mode) |
191 | { | |
192 | struct inode *inode; | |
193 | ||
194 | inode = new_inode(dir->i_sb); | |
195 | if (!inode) { | |
196 | mlog(ML_ERROR, "new_inode failed!\n"); | |
197 | return NULL; | |
198 | } | |
199 | ||
200 | /* populate as many fields early on as possible - many of | |
201 | * these are used by the support functions here and in | |
202 | * callers. */ | |
203 | if (S_ISDIR(mode)) | |
204 | inode->i_nlink = 2; | |
205 | else | |
206 | inode->i_nlink = 1; | |
207 | inode->i_uid = current_fsuid(); | |
208 | if (dir->i_mode & S_ISGID) { | |
209 | inode->i_gid = dir->i_gid; | |
210 | if (S_ISDIR(mode)) | |
211 | mode |= S_ISGID; | |
212 | } else | |
213 | inode->i_gid = current_fsgid(); | |
214 | inode->i_mode = mode; | |
871a2931 | 215 | dquot_initialize(inode); |
f5d36202 TY |
216 | return inode; |
217 | } | |
218 | ||
ccd979bd MF |
219 | static int ocfs2_mknod(struct inode *dir, |
220 | struct dentry *dentry, | |
221 | int mode, | |
222 | dev_t dev) | |
223 | { | |
224 | int status = 0; | |
225 | struct buffer_head *parent_fe_bh = NULL; | |
1fabe148 | 226 | handle_t *handle = NULL; |
ccd979bd MF |
227 | struct ocfs2_super *osb; |
228 | struct ocfs2_dinode *dirfe; | |
229 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
230 | struct inode *inode = NULL; |
231 | struct ocfs2_alloc_context *inode_ac = NULL; | |
232 | struct ocfs2_alloc_context *data_ac = NULL; | |
9b7895ef | 233 | struct ocfs2_alloc_context *meta_ac = NULL; |
534eaddd | 234 | int want_clusters = 0; |
9b7895ef | 235 | int want_meta = 0; |
534eaddd TY |
236 | int xattr_credits = 0; |
237 | struct ocfs2_security_xattr_info si = { | |
238 | .enable = 1, | |
239 | }; | |
a90714c1 | 240 | int did_quota_inode = 0; |
4a12ca3a | 241 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
242 | |
243 | mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, mode, | |
244 | (unsigned long)dev, dentry->d_name.len, | |
245 | dentry->d_name.name); | |
246 | ||
871a2931 | 247 | dquot_initialize(dir); |
907f4554 | 248 | |
ccd979bd MF |
249 | /* get our super block */ |
250 | osb = OCFS2_SB(dir->i_sb); | |
251 | ||
e63aecb6 | 252 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
e3a82138 MF |
253 | if (status < 0) { |
254 | if (status != -ENOENT) | |
255 | mlog_errno(status); | |
256 | return status; | |
257 | } | |
258 | ||
198a1ca3 | 259 | if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) { |
a663e305 MF |
260 | status = -EMLINK; |
261 | goto leave; | |
262 | } | |
263 | ||
ccd979bd | 264 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
198a1ca3 | 265 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
266 | /* can't make a file in a deleted directory. */ |
267 | status = -ENOENT; | |
268 | goto leave; | |
269 | } | |
270 | ||
271 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
272 | dentry->d_name.len); | |
273 | if (status) | |
274 | goto leave; | |
275 | ||
276 | /* get a spot inside the dir. */ | |
277 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
278 | dentry->d_name.name, | |
4a12ca3a | 279 | dentry->d_name.len, &lookup); |
ccd979bd MF |
280 | if (status < 0) { |
281 | mlog_errno(status); | |
282 | goto leave; | |
283 | } | |
284 | ||
285 | /* reserve an inode spot */ | |
da5cbf2f | 286 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
287 | if (status < 0) { |
288 | if (status != -ENOSPC) | |
289 | mlog_errno(status); | |
290 | goto leave; | |
291 | } | |
292 | ||
f5d36202 TY |
293 | inode = ocfs2_get_init_inode(dir, mode); |
294 | if (!inode) { | |
295 | status = -ENOMEM; | |
296 | mlog_errno(status); | |
297 | goto leave; | |
298 | } | |
299 | ||
534eaddd TY |
300 | /* get security xattr */ |
301 | status = ocfs2_init_security_get(inode, dir, &si); | |
302 | if (status) { | |
303 | if (status == -EOPNOTSUPP) | |
304 | si.enable = 0; | |
305 | else { | |
306 | mlog_errno(status); | |
307 | goto leave; | |
308 | } | |
309 | } | |
310 | ||
89c38bd0 TY |
311 | /* calculate meta data/clusters for setting security and acl xattr */ |
312 | status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode, | |
9b7895ef MF |
313 | &si, &want_clusters, |
314 | &xattr_credits, &want_meta); | |
89c38bd0 TY |
315 | if (status < 0) { |
316 | mlog_errno(status); | |
317 | goto leave; | |
ccd979bd MF |
318 | } |
319 | ||
534eaddd | 320 | /* Reserve a cluster if creating an extent based directory. */ |
9b7895ef | 321 | if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) { |
534eaddd TY |
322 | want_clusters += 1; |
323 | ||
9b7895ef | 324 | /* Dir indexing requires extra space as well */ |
4ed8a6bb | 325 | if (ocfs2_supports_indexed_dirs(osb)) |
9b7895ef | 326 | want_meta++; |
9b7895ef MF |
327 | } |
328 | ||
329 | status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac); | |
330 | if (status < 0) { | |
331 | if (status != -ENOSPC) | |
332 | mlog_errno(status); | |
333 | goto leave; | |
334 | } | |
335 | ||
534eaddd TY |
336 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); |
337 | if (status < 0) { | |
338 | if (status != -ENOSPC) | |
339 | mlog_errno(status); | |
340 | goto leave; | |
341 | } | |
342 | ||
9b7895ef MF |
343 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, |
344 | S_ISDIR(mode), | |
345 | xattr_credits)); | |
ccd979bd MF |
346 | if (IS_ERR(handle)) { |
347 | status = PTR_ERR(handle); | |
348 | handle = NULL; | |
349 | mlog_errno(status); | |
350 | goto leave; | |
351 | } | |
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); |
ccd979bd MF |
387 | status = ocfs2_journal_dirty(handle, parent_fe_bh); |
388 | if (status < 0) { | |
389 | mlog_errno(status); | |
390 | goto leave; | |
391 | } | |
d8c76e6f | 392 | inc_nlink(dir); |
ccd979bd MF |
393 | } |
394 | ||
89c38bd0 | 395 | status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh, |
9b7895ef | 396 | meta_ac, data_ac); |
89c38bd0 TY |
397 | if (status < 0) { |
398 | mlog_errno(status); | |
399 | goto leave; | |
400 | } | |
401 | ||
534eaddd TY |
402 | if (si.enable) { |
403 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
9b7895ef | 404 | meta_ac, data_ac); |
534eaddd TY |
405 | if (status < 0) { |
406 | mlog_errno(status); | |
407 | goto leave; | |
408 | } | |
409 | } | |
410 | ||
ccd979bd MF |
411 | status = ocfs2_add_entry(handle, dentry, inode, |
412 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
4a12ca3a | 413 | &lookup); |
ccd979bd MF |
414 | if (status < 0) { |
415 | mlog_errno(status); | |
416 | goto leave; | |
417 | } | |
418 | ||
379dfe9d | 419 | status = ocfs2_dentry_attach_lock(dentry, inode, |
0027dd5b | 420 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
421 | if (status) { |
422 | mlog_errno(status); | |
423 | goto leave; | |
424 | } | |
425 | ||
ccd979bd MF |
426 | insert_inode_hash(inode); |
427 | dentry->d_op = &ocfs2_dentry_ops; | |
428 | d_instantiate(dentry, inode); | |
429 | status = 0; | |
430 | leave: | |
a90714c1 | 431 | if (status < 0 && did_quota_inode) |
63936dda | 432 | dquot_free_inode(inode); |
ccd979bd | 433 | if (handle) |
02dc1af4 | 434 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 435 | |
e63aecb6 | 436 | ocfs2_inode_unlock(dir, 1); |
e3a82138 | 437 | |
ccd979bd MF |
438 | if (status == -ENOSPC) |
439 | mlog(0, "Disk is full\n"); | |
440 | ||
a81cb88b | 441 | brelse(new_fe_bh); |
a81cb88b | 442 | brelse(parent_fe_bh); |
534eaddd TY |
443 | kfree(si.name); |
444 | kfree(si.value); | |
ccd979bd | 445 | |
4a12ca3a MF |
446 | ocfs2_free_dir_lookup_result(&lookup); |
447 | ||
ccd979bd MF |
448 | if (inode_ac) |
449 | ocfs2_free_alloc_context(inode_ac); | |
450 | ||
451 | if (data_ac) | |
452 | ocfs2_free_alloc_context(data_ac); | |
453 | ||
9b7895ef MF |
454 | if (meta_ac) |
455 | ocfs2_free_alloc_context(meta_ac); | |
534eaddd | 456 | |
062d3403 LD |
457 | /* |
458 | * We should call iput after the i_mutex of the bitmap been | |
459 | * unlocked in ocfs2_free_alloc_context, or the | |
460 | * ocfs2_delete_inode will mutex_lock again. | |
461 | */ | |
462 | if ((status < 0) && inode) { | |
463 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; | |
464 | clear_nlink(inode); | |
465 | iput(inode); | |
466 | } | |
467 | ||
ccd979bd MF |
468 | mlog_exit(status); |
469 | ||
470 | return status; | |
471 | } | |
472 | ||
473 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, | |
474 | struct inode *dir, | |
f5d36202 | 475 | struct inode *inode, |
ccd979bd MF |
476 | dev_t dev, |
477 | struct buffer_head **new_fe_bh, | |
478 | struct buffer_head *parent_fe_bh, | |
1fabe148 | 479 | handle_t *handle, |
ccd979bd MF |
480 | struct ocfs2_alloc_context *inode_ac) |
481 | { | |
482 | int status = 0; | |
483 | struct ocfs2_dinode *fe = NULL; | |
484 | struct ocfs2_extent_list *fel; | |
485 | u64 fe_blkno = 0; | |
486 | u16 suballoc_bit; | |
9b7895ef | 487 | u16 feat; |
ccd979bd | 488 | |
ccd979bd | 489 | *new_fe_bh = NULL; |
ccd979bd | 490 | |
13821151 TM |
491 | status = ocfs2_claim_new_inode(osb, handle, dir, parent_fe_bh, |
492 | inode_ac, &suballoc_bit, &fe_blkno); | |
ccd979bd MF |
493 | if (status < 0) { |
494 | mlog_errno(status); | |
495 | goto leave; | |
496 | } | |
497 | ||
ccd979bd MF |
498 | /* populate as many fields early on as possible - many of |
499 | * these are used by the support functions here and in | |
500 | * callers. */ | |
501 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
502 | OCFS2_I(inode)->ip_blkno = fe_blkno; | |
ccd979bd MF |
503 | spin_lock(&osb->osb_lock); |
504 | inode->i_generation = osb->s_next_generation++; | |
505 | spin_unlock(&osb->osb_lock); | |
506 | ||
507 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
508 | if (!*new_fe_bh) { | |
509 | status = -EIO; | |
510 | mlog_errno(status); | |
511 | goto leave; | |
512 | } | |
8cb471e8 | 513 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
ccd979bd | 514 | |
0cf2f763 JB |
515 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
516 | *new_fe_bh, | |
13723d00 | 517 | OCFS2_JOURNAL_ACCESS_CREATE); |
ccd979bd MF |
518 | if (status < 0) { |
519 | mlog_errno(status); | |
520 | goto leave; | |
521 | } | |
522 | ||
523 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
524 | memset(fe, 0, osb->sb->s_blocksize); | |
525 | ||
526 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
527 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
528 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
529 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); | |
4d0ddb2c | 530 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
f5d36202 TY |
531 | fe->i_uid = cpu_to_le32(inode->i_uid); |
532 | fe->i_gid = cpu_to_le32(inode->i_gid); | |
533 | fe->i_mode = cpu_to_le16(inode->i_mode); | |
534 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 535 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
198a1ca3 MF |
536 | |
537 | ocfs2_set_links_count(fe, inode->i_nlink); | |
ccd979bd MF |
538 | |
539 | fe->i_last_eb_blk = 0; | |
540 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
541 | le32_add_cpu(&fe->i_flags, OCFS2_VALID_FL); | |
542 | fe->i_atime = fe->i_ctime = fe->i_mtime = | |
543 | cpu_to_le64(CURRENT_TIME.tv_sec); | |
544 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = | |
545 | cpu_to_le32(CURRENT_TIME.tv_nsec); | |
546 | fe->i_dtime = 0; | |
547 | ||
5b6a3a2b | 548 | /* |
9b7895ef MF |
549 | * If supported, directories start with inline data. If inline |
550 | * isn't supported, but indexing is, we start them as indexed. | |
5b6a3a2b | 551 | */ |
9b7895ef | 552 | feat = le16_to_cpu(fe->i_dyn_features); |
f5d36202 | 553 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
554 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
555 | ||
d9ae49d6 TY |
556 | fe->id2.i_data.id_count = cpu_to_le16( |
557 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); | |
5b6a3a2b MF |
558 | } else { |
559 | fel = &fe->id2.i_list; | |
560 | fel->l_tree_depth = 0; | |
561 | fel->l_next_free_rec = 0; | |
562 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
563 | } | |
ccd979bd MF |
564 | |
565 | status = ocfs2_journal_dirty(handle, *new_fe_bh); | |
566 | if (status < 0) { | |
567 | mlog_errno(status); | |
568 | goto leave; | |
569 | } | |
570 | ||
b657c95c | 571 | ocfs2_populate_inode(inode, fe, 1); |
0cf2f763 | 572 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
c271c5c2 SM |
573 | if (!ocfs2_mount_local(osb)) { |
574 | status = ocfs2_create_new_inode_locks(inode); | |
575 | if (status < 0) | |
576 | mlog_errno(status); | |
577 | } | |
ccd979bd MF |
578 | |
579 | status = 0; /* error in ocfs2_create_new_inode_locks is not | |
580 | * critical */ | |
581 | ||
ccd979bd MF |
582 | leave: |
583 | if (status < 0) { | |
584 | if (*new_fe_bh) { | |
585 | brelse(*new_fe_bh); | |
586 | *new_fe_bh = NULL; | |
587 | } | |
ccd979bd MF |
588 | } |
589 | ||
590 | mlog_exit(status); | |
591 | return status; | |
592 | } | |
593 | ||
594 | static int ocfs2_mkdir(struct inode *dir, | |
595 | struct dentry *dentry, | |
596 | int mode) | |
597 | { | |
598 | int ret; | |
599 | ||
600 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, | |
601 | dentry->d_name.len, dentry->d_name.name); | |
602 | ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0); | |
603 | mlog_exit(ret); | |
604 | ||
605 | return ret; | |
606 | } | |
607 | ||
608 | static int ocfs2_create(struct inode *dir, | |
609 | struct dentry *dentry, | |
610 | int mode, | |
611 | struct nameidata *nd) | |
612 | { | |
613 | int ret; | |
614 | ||
615 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, | |
616 | dentry->d_name.len, dentry->d_name.name); | |
617 | ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0); | |
618 | mlog_exit(ret); | |
619 | ||
620 | return ret; | |
621 | } | |
622 | ||
623 | static int ocfs2_link(struct dentry *old_dentry, | |
624 | struct inode *dir, | |
625 | struct dentry *dentry) | |
626 | { | |
1fabe148 | 627 | handle_t *handle; |
ccd979bd MF |
628 | struct inode *inode = old_dentry->d_inode; |
629 | int err; | |
630 | struct buffer_head *fe_bh = NULL; | |
631 | struct buffer_head *parent_fe_bh = NULL; | |
ccd979bd MF |
632 | struct ocfs2_dinode *fe = NULL; |
633 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
4a12ca3a | 634 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
635 | |
636 | mlog_entry("(inode=%lu, old='%.*s' new='%.*s')\n", inode->i_ino, | |
637 | old_dentry->d_name.len, old_dentry->d_name.name, | |
638 | dentry->d_name.len, dentry->d_name.name); | |
639 | ||
123a9643 MF |
640 | if (S_ISDIR(inode->i_mode)) |
641 | return -EPERM; | |
ccd979bd | 642 | |
871a2931 | 643 | dquot_initialize(dir); |
907f4554 | 644 | |
cb25797d | 645 | err = ocfs2_inode_lock_nested(dir, &parent_fe_bh, 1, OI_LS_PARENT); |
ccd979bd MF |
646 | if (err < 0) { |
647 | if (err != -ENOENT) | |
648 | mlog_errno(err); | |
123a9643 | 649 | return err; |
ccd979bd MF |
650 | } |
651 | ||
0f62de2c TY |
652 | if (!dir->i_nlink) { |
653 | err = -ENOENT; | |
123a9643 | 654 | goto out; |
0f62de2c TY |
655 | } |
656 | ||
ccd979bd MF |
657 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
658 | dentry->d_name.len); | |
659 | if (err) | |
123a9643 | 660 | goto out; |
ccd979bd MF |
661 | |
662 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
663 | dentry->d_name.name, | |
4a12ca3a | 664 | dentry->d_name.len, &lookup); |
ccd979bd MF |
665 | if (err < 0) { |
666 | mlog_errno(err); | |
123a9643 | 667 | goto out; |
ccd979bd MF |
668 | } |
669 | ||
e63aecb6 | 670 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
671 | if (err < 0) { |
672 | if (err != -ENOENT) | |
673 | mlog_errno(err); | |
123a9643 | 674 | goto out; |
ccd979bd MF |
675 | } |
676 | ||
677 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
198a1ca3 | 678 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
ccd979bd | 679 | err = -EMLINK; |
123a9643 | 680 | goto out_unlock_inode; |
ccd979bd MF |
681 | } |
682 | ||
a90714c1 | 683 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
684 | if (IS_ERR(handle)) { |
685 | err = PTR_ERR(handle); | |
686 | handle = NULL; | |
687 | mlog_errno(err); | |
123a9643 | 688 | goto out_unlock_inode; |
ccd979bd MF |
689 | } |
690 | ||
0cf2f763 | 691 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 692 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
693 | if (err < 0) { |
694 | mlog_errno(err); | |
123a9643 | 695 | goto out_commit; |
ccd979bd MF |
696 | } |
697 | ||
d8c76e6f | 698 | inc_nlink(inode); |
ccd979bd | 699 | inode->i_ctime = CURRENT_TIME; |
198a1ca3 | 700 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
701 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
702 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
703 | ||
704 | err = ocfs2_journal_dirty(handle, fe_bh); | |
705 | if (err < 0) { | |
198a1ca3 | 706 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 707 | drop_nlink(inode); |
ccd979bd | 708 | mlog_errno(err); |
123a9643 | 709 | goto out_commit; |
ccd979bd MF |
710 | } |
711 | ||
712 | err = ocfs2_add_entry(handle, dentry, inode, | |
713 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 714 | parent_fe_bh, &lookup); |
ccd979bd | 715 | if (err) { |
198a1ca3 | 716 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 717 | drop_nlink(inode); |
ccd979bd | 718 | mlog_errno(err); |
123a9643 | 719 | goto out_commit; |
ccd979bd MF |
720 | } |
721 | ||
0027dd5b | 722 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
723 | if (err) { |
724 | mlog_errno(err); | |
123a9643 | 725 | goto out_commit; |
379dfe9d MF |
726 | } |
727 | ||
ccd979bd MF |
728 | atomic_inc(&inode->i_count); |
729 | dentry->d_op = &ocfs2_dentry_ops; | |
730 | d_instantiate(dentry, inode); | |
123a9643 MF |
731 | |
732 | out_commit: | |
02dc1af4 | 733 | ocfs2_commit_trans(osb, handle); |
123a9643 | 734 | out_unlock_inode: |
e63aecb6 | 735 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
736 | |
737 | out: | |
e63aecb6 | 738 | ocfs2_inode_unlock(dir, 1); |
123a9643 | 739 | |
a81cb88b MF |
740 | brelse(fe_bh); |
741 | brelse(parent_fe_bh); | |
ccd979bd | 742 | |
4a12ca3a MF |
743 | ocfs2_free_dir_lookup_result(&lookup); |
744 | ||
ccd979bd MF |
745 | mlog_exit(err); |
746 | ||
747 | return err; | |
748 | } | |
749 | ||
379dfe9d MF |
750 | /* |
751 | * Takes and drops an exclusive lock on the given dentry. This will | |
752 | * force other nodes to drop it. | |
753 | */ | |
754 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
755 | { | |
756 | int ret; | |
757 | ||
758 | ret = ocfs2_dentry_lock(dentry, 1); | |
759 | if (ret) | |
760 | mlog_errno(ret); | |
761 | else | |
762 | ocfs2_dentry_unlock(dentry, 1); | |
763 | ||
764 | return ret; | |
765 | } | |
766 | ||
17ff7856 MF |
767 | static inline int inode_is_unlinkable(struct inode *inode) |
768 | { | |
769 | if (S_ISDIR(inode->i_mode)) { | |
770 | if (inode->i_nlink == 2) | |
771 | return 1; | |
772 | return 0; | |
773 | } | |
774 | ||
775 | if (inode->i_nlink == 1) | |
776 | return 1; | |
777 | return 0; | |
778 | } | |
779 | ||
ccd979bd MF |
780 | static int ocfs2_unlink(struct inode *dir, |
781 | struct dentry *dentry) | |
782 | { | |
783 | int status; | |
30a4f5e8 | 784 | int child_locked = 0; |
ccd979bd | 785 | struct inode *inode = dentry->d_inode; |
5098c27b | 786 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
787 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
788 | u64 blkno; | |
789 | struct ocfs2_dinode *fe = NULL; | |
790 | struct buffer_head *fe_bh = NULL; | |
791 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 792 | handle_t *handle = NULL; |
ccd979bd | 793 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
794 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
795 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd MF |
796 | |
797 | mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry, | |
798 | dentry->d_name.len, dentry->d_name.name); | |
799 | ||
871a2931 | 800 | dquot_initialize(dir); |
907f4554 | 801 | |
ccd979bd MF |
802 | BUG_ON(dentry->d_parent->d_inode != dir); |
803 | ||
b0697053 | 804 | mlog(0, "ino = %llu\n", (unsigned long long)OCFS2_I(inode)->ip_blkno); |
ccd979bd MF |
805 | |
806 | if (inode == osb->root_inode) { | |
807 | mlog(0, "Cannot delete the root directory\n"); | |
30a4f5e8 | 808 | return -EPERM; |
ccd979bd MF |
809 | } |
810 | ||
cb25797d JK |
811 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
812 | OI_LS_PARENT); | |
ccd979bd MF |
813 | if (status < 0) { |
814 | if (status != -ENOENT) | |
815 | mlog_errno(status); | |
30a4f5e8 | 816 | return status; |
ccd979bd MF |
817 | } |
818 | ||
819 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
820 | dentry->d_name.len, &blkno, dir, |
821 | &lookup); | |
ccd979bd MF |
822 | if (status < 0) { |
823 | if (status != -ENOENT) | |
824 | mlog_errno(status); | |
825 | goto leave; | |
826 | } | |
827 | ||
828 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
829 | status = -ENOENT; | |
830 | ||
b0697053 MF |
831 | mlog(0, "ip_blkno %llu != dirent blkno %llu ip_flags = %x\n", |
832 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
833 | (unsigned long long)blkno, OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
834 | goto leave; |
835 | } | |
836 | ||
e63aecb6 | 837 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
838 | if (status < 0) { |
839 | if (status != -ENOENT) | |
840 | mlog_errno(status); | |
841 | goto leave; | |
842 | } | |
30a4f5e8 | 843 | child_locked = 1; |
ccd979bd MF |
844 | |
845 | if (S_ISDIR(inode->i_mode)) { | |
b80b549c | 846 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
ccd979bd MF |
847 | status = -ENOTEMPTY; |
848 | goto leave; | |
849 | } | |
850 | } | |
851 | ||
379dfe9d | 852 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 853 | if (status < 0) { |
34d024f8 | 854 | /* This remote delete should succeed under all normal |
ccd979bd MF |
855 | * circumstances. */ |
856 | mlog_errno(status); | |
857 | goto leave; | |
858 | } | |
859 | ||
17ff7856 | 860 | if (inode_is_unlinkable(inode)) { |
19bd341f TM |
861 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
862 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 863 | orphan_name, &orphan_insert); |
ccd979bd MF |
864 | if (status < 0) { |
865 | mlog_errno(status); | |
866 | goto leave; | |
867 | } | |
868 | } | |
869 | ||
a90714c1 | 870 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
871 | if (IS_ERR(handle)) { |
872 | status = PTR_ERR(handle); | |
873 | handle = NULL; | |
874 | mlog_errno(status); | |
875 | goto leave; | |
876 | } | |
877 | ||
0cf2f763 | 878 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 879 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
880 | if (status < 0) { |
881 | mlog_errno(status); | |
882 | goto leave; | |
883 | } | |
884 | ||
885 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
886 | ||
17ff7856 | 887 | if (inode_is_unlinkable(inode)) { |
3939fda4 | 888 | status = ocfs2_orphan_add(osb, handle, inode, fe_bh, orphan_name, |
4a12ca3a | 889 | &orphan_insert, orphan_dir); |
ccd979bd MF |
890 | if (status < 0) { |
891 | mlog_errno(status); | |
892 | goto leave; | |
893 | } | |
894 | } | |
895 | ||
896 | /* delete the name from the parent dir */ | |
4a12ca3a | 897 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
898 | if (status < 0) { |
899 | mlog_errno(status); | |
900 | goto leave; | |
901 | } | |
902 | ||
17ff7856 MF |
903 | if (S_ISDIR(inode->i_mode)) |
904 | drop_nlink(inode); | |
905 | drop_nlink(inode); | |
198a1ca3 | 906 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
907 | |
908 | status = ocfs2_journal_dirty(handle, fe_bh); | |
909 | if (status < 0) { | |
910 | mlog_errno(status); | |
911 | goto leave; | |
912 | } | |
913 | ||
592282cf MF |
914 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; |
915 | if (S_ISDIR(inode->i_mode)) | |
17ff7856 | 916 | drop_nlink(dir); |
592282cf MF |
917 | |
918 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
919 | if (status < 0) { | |
920 | mlog_errno(status); | |
921 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 922 | inc_nlink(dir); |
ccd979bd MF |
923 | } |
924 | ||
925 | leave: | |
ccd979bd | 926 | if (handle) |
02dc1af4 | 927 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 928 | |
30a4f5e8 | 929 | if (child_locked) |
e63aecb6 | 930 | ocfs2_inode_unlock(inode, 1); |
30a4f5e8 | 931 | |
e63aecb6 | 932 | ocfs2_inode_unlock(dir, 1); |
30a4f5e8 | 933 | |
5098c27b MF |
934 | if (orphan_dir) { |
935 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 936 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
937 | mutex_unlock(&orphan_dir->i_mutex); |
938 | iput(orphan_dir); | |
939 | } | |
940 | ||
a81cb88b | 941 | brelse(fe_bh); |
a81cb88b | 942 | brelse(parent_node_bh); |
4a12ca3a MF |
943 | |
944 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
945 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd MF |
946 | |
947 | mlog_exit(status); | |
948 | ||
949 | return status; | |
950 | } | |
951 | ||
952 | /* | |
953 | * The only place this should be used is rename! | |
954 | * if they have the same id, then the 1st one is the only one locked. | |
955 | */ | |
956 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
957 | struct buffer_head **bh1, |
958 | struct inode *inode1, | |
959 | struct buffer_head **bh2, | |
960 | struct inode *inode2) | |
961 | { | |
962 | int status; | |
963 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); | |
964 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
965 | struct buffer_head **tmpbh; | |
966 | struct inode *tmpinode; | |
967 | ||
b0697053 MF |
968 | mlog_entry("(inode1 = %llu, inode2 = %llu)\n", |
969 | (unsigned long long)oi1->ip_blkno, | |
970 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 971 | |
ccd979bd MF |
972 | if (*bh1) |
973 | *bh1 = NULL; | |
974 | if (*bh2) | |
975 | *bh2 = NULL; | |
976 | ||
977 | /* we always want to lock the one with the lower lockid first. */ | |
978 | if (oi1->ip_blkno != oi2->ip_blkno) { | |
979 | if (oi1->ip_blkno < oi2->ip_blkno) { | |
980 | /* switch id1 and id2 around */ | |
981 | mlog(0, "switching them around...\n"); | |
982 | tmpbh = bh2; | |
983 | bh2 = bh1; | |
984 | bh1 = tmpbh; | |
985 | ||
986 | tmpinode = inode2; | |
987 | inode2 = inode1; | |
988 | inode1 = tmpinode; | |
989 | } | |
990 | /* lock id2 */ | |
cb25797d JK |
991 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
992 | OI_LS_RENAME1); | |
ccd979bd MF |
993 | if (status < 0) { |
994 | if (status != -ENOENT) | |
995 | mlog_errno(status); | |
996 | goto bail; | |
997 | } | |
998 | } | |
8d5596c6 | 999 | |
ccd979bd | 1000 | /* lock id1 */ |
cb25797d | 1001 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, OI_LS_RENAME2); |
ccd979bd | 1002 | if (status < 0) { |
8d5596c6 MF |
1003 | /* |
1004 | * An error return must mean that no cluster locks | |
1005 | * were held on function exit. | |
1006 | */ | |
1007 | if (oi1->ip_blkno != oi2->ip_blkno) | |
e63aecb6 | 1008 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 | 1009 | |
ccd979bd MF |
1010 | if (status != -ENOENT) |
1011 | mlog_errno(status); | |
ccd979bd | 1012 | } |
8d5596c6 | 1013 | |
ccd979bd MF |
1014 | bail: |
1015 | mlog_exit(status); | |
1016 | return status; | |
1017 | } | |
1018 | ||
8d5596c6 MF |
1019 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
1020 | { | |
e63aecb6 | 1021 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
1022 | |
1023 | if (inode1 != inode2) | |
e63aecb6 | 1024 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1025 | } |
1026 | ||
ccd979bd MF |
1027 | static int ocfs2_rename(struct inode *old_dir, |
1028 | struct dentry *old_dentry, | |
1029 | struct inode *new_dir, | |
1030 | struct dentry *new_dentry) | |
1031 | { | |
4a12ca3a MF |
1032 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1033 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
ccd979bd MF |
1034 | struct inode *old_inode = old_dentry->d_inode; |
1035 | struct inode *new_inode = new_dentry->d_inode; | |
5098c27b | 1036 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1037 | struct ocfs2_dinode *newfe = NULL; |
1038 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
ccd979bd | 1039 | struct buffer_head *newfe_bh = NULL; |
592282cf | 1040 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd | 1041 | struct ocfs2_super *osb = NULL; |
5b6a3a2b | 1042 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1043 | handle_t *handle = NULL; |
ccd979bd MF |
1044 | struct buffer_head *old_dir_bh = NULL; |
1045 | struct buffer_head *new_dir_bh = NULL; | |
592282cf | 1046 | nlink_t old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1047 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1048 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1049 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1050 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1051 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1052 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
ccd979bd MF |
1053 | |
1054 | /* At some point it might be nice to break this function up a | |
1055 | * bit. */ | |
1056 | ||
1057 | mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p, from='%.*s' to='%.*s')\n", | |
1058 | old_dir, old_dentry, new_dir, new_dentry, | |
1059 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1060 | new_dentry->d_name.len, new_dentry->d_name.name); | |
1061 | ||
871a2931 CH |
1062 | dquot_initialize(old_dir); |
1063 | dquot_initialize(new_dir); | |
907f4554 | 1064 | |
ccd979bd MF |
1065 | osb = OCFS2_SB(old_dir->i_sb); |
1066 | ||
1067 | if (new_inode) { | |
1068 | if (!igrab(new_inode)) | |
1069 | BUG(); | |
1070 | } | |
1071 | ||
1b3c3714 | 1072 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1073 | * a/b/c |
1074 | * a/d | |
1075 | * a,b,c, and d are all directories. | |
1076 | * | |
1077 | * from cwd of 'a' on both nodes: | |
1078 | * node1: mv b/c d | |
1079 | * node2: mv d b/c | |
1080 | * | |
1081 | * And that's why, just like the VFS, we need a file system | |
1082 | * rename lock. */ | |
5dabd695 | 1083 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1084 | status = ocfs2_rename_lock(osb); |
1085 | if (status < 0) { | |
1086 | mlog_errno(status); | |
1087 | goto bail; | |
1088 | } | |
1089 | rename_lock = 1; | |
1090 | } | |
1091 | ||
ccd979bd | 1092 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 MF |
1093 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
1094 | &new_dir_bh, new_dir); | |
ccd979bd MF |
1095 | if (status < 0) { |
1096 | mlog_errno(status); | |
1097 | goto bail; | |
1098 | } | |
8d5596c6 | 1099 | parents_locked = 1; |
ccd979bd MF |
1100 | |
1101 | /* make sure both dirs have bhs | |
1102 | * get an extra ref on old_dir_bh if old==new */ | |
1103 | if (!new_dir_bh) { | |
1104 | if (old_dir_bh) { | |
1105 | new_dir_bh = old_dir_bh; | |
1106 | get_bh(new_dir_bh); | |
1107 | } else { | |
1108 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1109 | status = -EIO; | |
1110 | goto bail; | |
1111 | } | |
1112 | } | |
1113 | ||
379dfe9d | 1114 | /* |
592282cf | 1115 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1116 | * also ensures that the downconvert thread on other nodes |
1117 | * won't have to concurrently downconvert the inode and the | |
1118 | * dentry locks. | |
379dfe9d | 1119 | */ |
cb25797d JK |
1120 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
1121 | OI_LS_PARENT); | |
379dfe9d MF |
1122 | if (status < 0) { |
1123 | if (status != -ENOENT) | |
ccd979bd | 1124 | mlog_errno(status); |
379dfe9d MF |
1125 | goto bail; |
1126 | } | |
8d5596c6 | 1127 | old_child_locked = 1; |
ccd979bd | 1128 | |
379dfe9d MF |
1129 | status = ocfs2_remote_dentry_delete(old_dentry); |
1130 | if (status < 0) { | |
1131 | mlog_errno(status); | |
1132 | goto bail; | |
1133 | } | |
1134 | ||
1135 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1136 | u64 old_inode_parent; |
1137 | ||
4a12ca3a | 1138 | update_dot_dot = 1; |
38760e24 | 1139 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1140 | old_inode, |
1141 | &old_inode_dot_dot_res); | |
38760e24 MF |
1142 | if (status) { |
1143 | status = -EIO; | |
ccd979bd | 1144 | goto bail; |
38760e24 | 1145 | } |
ccd979bd | 1146 | |
38760e24 MF |
1147 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1148 | status = -EIO; | |
ccd979bd | 1149 | goto bail; |
38760e24 MF |
1150 | } |
1151 | ||
1152 | if (!new_inode && new_dir != old_dir && | |
198a1ca3 | 1153 | new_dir->i_nlink >= ocfs2_link_max(osb)) { |
38760e24 | 1154 | status = -EMLINK; |
ccd979bd | 1155 | goto bail; |
38760e24 | 1156 | } |
ccd979bd MF |
1157 | } |
1158 | ||
5b6a3a2b MF |
1159 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1160 | old_dentry->d_name.len, | |
1161 | &old_de_ino); | |
1162 | if (status) { | |
1163 | status = -ENOENT; | |
ccd979bd | 1164 | goto bail; |
5b6a3a2b | 1165 | } |
ccd979bd MF |
1166 | |
1167 | /* | |
1168 | * Check for inode number is _not_ due to possible IO errors. | |
1169 | * We might rmdir the source, keep it as pwd of some process | |
1170 | * and merrily kill the link to whatever was created under the | |
1171 | * same name. Goodbye sticky bit ;-< | |
1172 | */ | |
5b6a3a2b MF |
1173 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1174 | status = -ENOENT; | |
ccd979bd | 1175 | goto bail; |
5b6a3a2b | 1176 | } |
ccd979bd MF |
1177 | |
1178 | /* check if the target already exists (in which case we need | |
1179 | * to delete it */ | |
1180 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1181 | new_dentry->d_name.len, | |
4a12ca3a MF |
1182 | &newfe_blkno, new_dir, |
1183 | &target_lookup_res); | |
ccd979bd MF |
1184 | /* The only error we allow here is -ENOENT because the new |
1185 | * file not existing is perfectly valid. */ | |
1186 | if ((status < 0) && (status != -ENOENT)) { | |
1187 | /* If we cannot find the file specified we should just */ | |
1188 | /* return the error... */ | |
1189 | mlog_errno(status); | |
1190 | goto bail; | |
1191 | } | |
4a12ca3a MF |
1192 | if (status == 0) |
1193 | target_exists = 1; | |
ccd979bd | 1194 | |
4a12ca3a | 1195 | if (!target_exists && new_inode) { |
e325a88f SE |
1196 | /* |
1197 | * Target was unlinked by another node while we were | |
1198 | * waiting to get to ocfs2_rename(). There isn't | |
1199 | * anything we can do here to help the situation, so | |
1200 | * bubble up the appropriate error. | |
1201 | */ | |
1202 | status = -ENOENT; | |
1203 | goto bail; | |
1204 | } | |
ccd979bd MF |
1205 | |
1206 | /* In case we need to overwrite an existing file, we blow it | |
1207 | * away first */ | |
4a12ca3a | 1208 | if (target_exists) { |
ccd979bd MF |
1209 | /* VFS didn't think there existed an inode here, but |
1210 | * someone else in the cluster must have raced our | |
1211 | * rename to create one. Today we error cleanly, in | |
1212 | * the future we should consider calling iget to build | |
1213 | * a new struct inode for this entry. */ | |
1214 | if (!new_inode) { | |
1215 | status = -EACCES; | |
1216 | ||
1217 | mlog(0, "We found an inode for name %.*s but VFS " | |
1218 | "didn't give us one.\n", new_dentry->d_name.len, | |
1219 | new_dentry->d_name.name); | |
1220 | goto bail; | |
1221 | } | |
1222 | ||
1223 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1224 | status = -EACCES; | |
1225 | ||
b0697053 MF |
1226 | mlog(0, "Inode %llu and dir %llu disagree. flags = %x\n", |
1227 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, | |
1228 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1229 | OCFS2_I(new_inode)->ip_flags); |
1230 | goto bail; | |
1231 | } | |
1232 | ||
e63aecb6 | 1233 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1234 | if (status < 0) { |
1235 | if (status != -ENOENT) | |
1236 | mlog_errno(status); | |
1237 | goto bail; | |
1238 | } | |
8d5596c6 | 1239 | new_child_locked = 1; |
ccd979bd | 1240 | |
379dfe9d | 1241 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1242 | if (status < 0) { |
1243 | mlog_errno(status); | |
1244 | goto bail; | |
1245 | } | |
1246 | ||
1247 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1248 | ||
4a12ca3a MF |
1249 | mlog(0, "aha rename over existing... new_blkno=%llu " |
1250 | "newfebh=%p bhblocknr=%llu\n", | |
b0697053 | 1251 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1252 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1253 | ||
1254 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1255 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
19bd341f TM |
1256 | OCFS2_I(new_inode)->ip_blkno, |
1257 | orphan_name, &orphan_insert); | |
ccd979bd MF |
1258 | if (status < 0) { |
1259 | mlog_errno(status); | |
1260 | goto bail; | |
1261 | } | |
1262 | } | |
1263 | } else { | |
1264 | BUG_ON(new_dentry->d_parent->d_inode != new_dir); | |
1265 | ||
1266 | status = ocfs2_check_dir_for_entry(new_dir, | |
1267 | new_dentry->d_name.name, | |
1268 | new_dentry->d_name.len); | |
1269 | if (status) | |
1270 | goto bail; | |
1271 | ||
1272 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1273 | new_dentry->d_name.name, | |
1274 | new_dentry->d_name.len, | |
4a12ca3a | 1275 | &target_insert); |
ccd979bd MF |
1276 | if (status < 0) { |
1277 | mlog_errno(status); | |
1278 | goto bail; | |
1279 | } | |
1280 | } | |
1281 | ||
a90714c1 | 1282 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1283 | if (IS_ERR(handle)) { |
1284 | status = PTR_ERR(handle); | |
1285 | handle = NULL; | |
1286 | mlog_errno(status); | |
1287 | goto bail; | |
1288 | } | |
1289 | ||
4a12ca3a | 1290 | if (target_exists) { |
ccd979bd | 1291 | if (S_ISDIR(new_inode->i_mode)) { |
b80b549c MF |
1292 | if (new_inode->i_nlink != 2 || |
1293 | !ocfs2_empty_dir(new_inode)) { | |
ccd979bd MF |
1294 | status = -ENOTEMPTY; |
1295 | goto bail; | |
1296 | } | |
1297 | } | |
0cf2f763 JB |
1298 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
1299 | newfe_bh, | |
13723d00 | 1300 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1301 | if (status < 0) { |
1302 | mlog_errno(status); | |
1303 | goto bail; | |
1304 | } | |
1305 | ||
1306 | if (S_ISDIR(new_inode->i_mode) || | |
198a1ca3 | 1307 | (ocfs2_read_links_count(newfe) == 1)) { |
ccd979bd | 1308 | status = ocfs2_orphan_add(osb, handle, new_inode, |
3939fda4 | 1309 | newfe_bh, orphan_name, |
4a12ca3a | 1310 | &orphan_insert, orphan_dir); |
ccd979bd MF |
1311 | if (status < 0) { |
1312 | mlog_errno(status); | |
1313 | goto bail; | |
1314 | } | |
1315 | } | |
1316 | ||
1317 | /* change the dirent to point to the correct inode */ | |
4a12ca3a MF |
1318 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1319 | old_inode); | |
ccd979bd MF |
1320 | if (status < 0) { |
1321 | mlog_errno(status); | |
1322 | goto bail; | |
1323 | } | |
ccd979bd | 1324 | new_dir->i_version++; |
ccd979bd MF |
1325 | |
1326 | if (S_ISDIR(new_inode->i_mode)) | |
198a1ca3 | 1327 | ocfs2_set_links_count(newfe, 0); |
ccd979bd | 1328 | else |
198a1ca3 | 1329 | ocfs2_add_links_count(newfe, -1); |
ccd979bd MF |
1330 | |
1331 | status = ocfs2_journal_dirty(handle, newfe_bh); | |
1332 | if (status < 0) { | |
1333 | mlog_errno(status); | |
1334 | goto bail; | |
1335 | } | |
1336 | } else { | |
1337 | /* if the name was not found in new_dir, add it now */ | |
1338 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1339 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1340 | new_dir_bh, &target_insert); |
ccd979bd MF |
1341 | } |
1342 | ||
1343 | old_inode->i_ctime = CURRENT_TIME; | |
1344 | mark_inode_dirty(old_inode); | |
480214d7 | 1345 | |
0cf2f763 JB |
1346 | status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), |
1347 | old_inode_bh, | |
13723d00 | 1348 | OCFS2_JOURNAL_ACCESS_WRITE); |
480214d7 SM |
1349 | if (status >= 0) { |
1350 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1351 | ||
1352 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); | |
1353 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); | |
1354 | ||
1355 | status = ocfs2_journal_dirty(handle, old_inode_bh); | |
1356 | if (status < 0) | |
1357 | mlog_errno(status); | |
1358 | } else | |
1359 | mlog_errno(status); | |
ccd979bd | 1360 | |
5b6a3a2b MF |
1361 | /* |
1362 | * Now that the name has been added to new_dir, remove the old name. | |
1363 | * | |
1364 | * We don't keep any directory entry context around until now | |
1365 | * because the insert might have changed the type of directory | |
1366 | * we're dealing with. | |
1367 | */ | |
4a12ca3a MF |
1368 | status = ocfs2_find_entry(old_dentry->d_name.name, |
1369 | old_dentry->d_name.len, old_dir, | |
1370 | &old_entry_lookup); | |
1371 | if (status) | |
5b6a3a2b | 1372 | goto bail; |
5b6a3a2b | 1373 | |
4a12ca3a | 1374 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
ccd979bd MF |
1375 | if (status < 0) { |
1376 | mlog_errno(status); | |
1377 | goto bail; | |
1378 | } | |
1379 | ||
1380 | if (new_inode) { | |
1381 | new_inode->i_nlink--; | |
1382 | new_inode->i_ctime = CURRENT_TIME; | |
1383 | } | |
1384 | old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME; | |
4a12ca3a MF |
1385 | |
1386 | if (update_dot_dot) { | |
1387 | status = ocfs2_update_entry(old_inode, handle, | |
1388 | &old_inode_dot_dot_res, new_dir); | |
ccd979bd MF |
1389 | old_dir->i_nlink--; |
1390 | if (new_inode) { | |
1391 | new_inode->i_nlink--; | |
1392 | } else { | |
d8c76e6f | 1393 | inc_nlink(new_dir); |
ccd979bd MF |
1394 | mark_inode_dirty(new_dir); |
1395 | } | |
1396 | } | |
1397 | mark_inode_dirty(old_dir); | |
592282cf MF |
1398 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1399 | if (new_inode) { | |
ccd979bd | 1400 | mark_inode_dirty(new_inode); |
592282cf MF |
1401 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1402 | } | |
ccd979bd | 1403 | |
592282cf MF |
1404 | if (old_dir != new_dir) { |
1405 | /* Keep the same times on both directories.*/ | |
1406 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; | |
1407 | ||
1408 | /* | |
1409 | * This will also pick up the i_nlink change from the | |
1410 | * block above. | |
1411 | */ | |
1412 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1413 | } | |
ccd979bd MF |
1414 | |
1415 | if (old_dir_nlink != old_dir->i_nlink) { | |
1416 | if (!old_dir_bh) { | |
1417 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1418 | "%llu from %d to %d but bh is NULL!\n", |
1419 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1420 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1421 | } else { |
1422 | struct ocfs2_dinode *fe; | |
0cf2f763 JB |
1423 | status = ocfs2_journal_access_di(handle, |
1424 | INODE_CACHE(old_dir), | |
1425 | old_dir_bh, | |
1426 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd | 1427 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
198a1ca3 | 1428 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
ccd979bd MF |
1429 | status = ocfs2_journal_dirty(handle, old_dir_bh); |
1430 | } | |
1431 | } | |
379dfe9d | 1432 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1433 | status = 0; |
1434 | bail: | |
1435 | if (rename_lock) | |
1436 | ocfs2_rename_unlock(osb); | |
1437 | ||
1438 | if (handle) | |
02dc1af4 | 1439 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1440 | |
8d5596c6 MF |
1441 | if (parents_locked) |
1442 | ocfs2_double_unlock(old_dir, new_dir); | |
1443 | ||
1444 | if (old_child_locked) | |
e63aecb6 | 1445 | ocfs2_inode_unlock(old_inode, 1); |
8d5596c6 MF |
1446 | |
1447 | if (new_child_locked) | |
e63aecb6 | 1448 | ocfs2_inode_unlock(new_inode, 1); |
8d5596c6 | 1449 | |
5098c27b MF |
1450 | if (orphan_dir) { |
1451 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1452 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
1453 | mutex_unlock(&orphan_dir->i_mutex); |
1454 | iput(orphan_dir); | |
1455 | } | |
1456 | ||
ccd979bd MF |
1457 | if (new_inode) |
1458 | sync_mapping_buffers(old_inode->i_mapping); | |
1459 | ||
1460 | if (new_inode) | |
1461 | iput(new_inode); | |
4a12ca3a MF |
1462 | |
1463 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1464 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1465 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1466 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1467 | ocfs2_free_dir_lookup_result(&target_insert); | |
1468 | ||
a81cb88b MF |
1469 | brelse(newfe_bh); |
1470 | brelse(old_inode_bh); | |
1471 | brelse(old_dir_bh); | |
1472 | brelse(new_dir_bh); | |
ccd979bd MF |
1473 | |
1474 | mlog_exit(status); | |
1475 | ||
1476 | return status; | |
1477 | } | |
1478 | ||
1479 | /* | |
1480 | * we expect i_size = strlen(symname). Copy symname into the file | |
1481 | * data, including the null terminator. | |
1482 | */ | |
1483 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1484 | handle_t *handle, |
ccd979bd MF |
1485 | struct inode *inode, |
1486 | const char *symname) | |
1487 | { | |
1488 | struct buffer_head **bhs = NULL; | |
1489 | const char *c; | |
1490 | struct super_block *sb = osb->sb; | |
4f902c37 | 1491 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1492 | int virtual, blocks, status, i, bytes_left; |
1493 | ||
1494 | bytes_left = i_size_read(inode) + 1; | |
1495 | /* we can't trust i_blocks because we're actually going to | |
1496 | * write i_size + 1 bytes. */ | |
1497 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1498 | ||
5515eff8 AM |
1499 | mlog_entry("i_blocks = %llu, i_size = %llu, blocks = %d\n", |
1500 | (unsigned long long)inode->i_blocks, | |
1501 | i_size_read(inode), blocks); | |
ccd979bd MF |
1502 | |
1503 | /* Sanity check -- make sure we're going to fit. */ | |
1504 | if (bytes_left > | |
1505 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1506 | status = -EIO; | |
1507 | mlog_errno(status); | |
1508 | goto bail; | |
1509 | } | |
1510 | ||
1511 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1512 | if (!bhs) { | |
1513 | status = -ENOMEM; | |
1514 | mlog_errno(status); | |
1515 | goto bail; | |
1516 | } | |
1517 | ||
49cb8d2d MF |
1518 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1519 | NULL); | |
ccd979bd MF |
1520 | if (status < 0) { |
1521 | mlog_errno(status); | |
1522 | goto bail; | |
1523 | } | |
1524 | ||
1525 | /* links can never be larger than one cluster so we know this | |
1526 | * is all going to be contiguous, but do a sanity check | |
1527 | * anyway. */ | |
1528 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1529 | status = -EIO; | |
1530 | mlog_errno(status); | |
1531 | goto bail; | |
1532 | } | |
1533 | ||
1534 | virtual = 0; | |
1535 | while(bytes_left > 0) { | |
1536 | c = &symname[virtual * sb->s_blocksize]; | |
1537 | ||
1538 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1539 | if (!bhs[virtual]) { | |
1540 | status = -ENOMEM; | |
1541 | mlog_errno(status); | |
1542 | goto bail; | |
1543 | } | |
8cb471e8 JB |
1544 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
1545 | bhs[virtual]); | |
ccd979bd | 1546 | |
0cf2f763 JB |
1547 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
1548 | bhs[virtual], | |
ccd979bd MF |
1549 | OCFS2_JOURNAL_ACCESS_CREATE); |
1550 | if (status < 0) { | |
1551 | mlog_errno(status); | |
1552 | goto bail; | |
1553 | } | |
1554 | ||
1555 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1556 | ||
1557 | memcpy(bhs[virtual]->b_data, c, | |
1558 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1559 | bytes_left); | |
1560 | ||
1561 | status = ocfs2_journal_dirty(handle, bhs[virtual]); | |
1562 | if (status < 0) { | |
1563 | mlog_errno(status); | |
1564 | goto bail; | |
1565 | } | |
1566 | ||
1567 | virtual++; | |
1568 | p_blkno++; | |
1569 | bytes_left -= sb->s_blocksize; | |
1570 | } | |
1571 | ||
1572 | status = 0; | |
1573 | bail: | |
1574 | ||
1575 | if (bhs) { | |
1576 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1577 | brelse(bhs[i]); |
ccd979bd MF |
1578 | kfree(bhs); |
1579 | } | |
1580 | ||
1581 | mlog_exit(status); | |
1582 | return status; | |
1583 | } | |
1584 | ||
1585 | static int ocfs2_symlink(struct inode *dir, | |
1586 | struct dentry *dentry, | |
1587 | const char *symname) | |
1588 | { | |
1589 | int status, l, credits; | |
1590 | u64 newsize; | |
1591 | struct ocfs2_super *osb = NULL; | |
1592 | struct inode *inode = NULL; | |
1593 | struct super_block *sb; | |
1594 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1595 | struct buffer_head *parent_fe_bh = NULL; |
1596 | struct ocfs2_dinode *fe = NULL; | |
1597 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1598 | handle_t *handle = NULL; |
ccd979bd MF |
1599 | struct ocfs2_alloc_context *inode_ac = NULL; |
1600 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1601 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1602 | int want_clusters = 0; | |
1603 | int xattr_credits = 0; | |
1604 | struct ocfs2_security_xattr_info si = { | |
1605 | .enable = 1, | |
1606 | }; | |
a90714c1 | 1607 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1608 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
1609 | |
1610 | mlog_entry("(0x%p, 0x%p, symname='%s' actual='%.*s')\n", dir, | |
1611 | dentry, symname, dentry->d_name.len, dentry->d_name.name); | |
1612 | ||
871a2931 | 1613 | dquot_initialize(dir); |
907f4554 | 1614 | |
ccd979bd MF |
1615 | sb = dir->i_sb; |
1616 | osb = OCFS2_SB(sb); | |
1617 | ||
1618 | l = strlen(symname) + 1; | |
1619 | ||
1620 | credits = ocfs2_calc_symlink_credits(sb); | |
1621 | ||
ccd979bd | 1622 | /* lock the parent directory */ |
e63aecb6 | 1623 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1624 | if (status < 0) { |
1625 | if (status != -ENOENT) | |
1626 | mlog_errno(status); | |
6d8fc40e | 1627 | return status; |
ccd979bd MF |
1628 | } |
1629 | ||
1630 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
198a1ca3 | 1631 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
1632 | /* can't make a file in a deleted directory. */ |
1633 | status = -ENOENT; | |
1634 | goto bail; | |
1635 | } | |
1636 | ||
1637 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1638 | dentry->d_name.len); | |
1639 | if (status) | |
1640 | goto bail; | |
1641 | ||
1642 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1643 | dentry->d_name.name, | |
4a12ca3a | 1644 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1645 | if (status < 0) { |
1646 | mlog_errno(status); | |
1647 | goto bail; | |
1648 | } | |
1649 | ||
da5cbf2f | 1650 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1651 | if (status < 0) { |
1652 | if (status != -ENOSPC) | |
1653 | mlog_errno(status); | |
1654 | goto bail; | |
1655 | } | |
1656 | ||
f5d36202 TY |
1657 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
1658 | if (!inode) { | |
1659 | status = -ENOMEM; | |
1660 | mlog_errno(status); | |
1661 | goto bail; | |
1662 | } | |
1663 | ||
534eaddd TY |
1664 | /* get security xattr */ |
1665 | status = ocfs2_init_security_get(inode, dir, &si); | |
1666 | if (status) { | |
1667 | if (status == -EOPNOTSUPP) | |
1668 | si.enable = 0; | |
1669 | else { | |
1670 | mlog_errno(status); | |
1671 | goto bail; | |
1672 | } | |
1673 | } | |
1674 | ||
1675 | /* calculate meta data/clusters for setting security xattr */ | |
1676 | if (si.enable) { | |
1677 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1678 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1679 | if (status < 0) { |
534eaddd | 1680 | mlog_errno(status); |
ccd979bd MF |
1681 | goto bail; |
1682 | } | |
1683 | } | |
1684 | ||
534eaddd TY |
1685 | /* don't reserve bitmap space for fast symlinks. */ |
1686 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1687 | want_clusters += 1; | |
1688 | ||
1689 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1690 | if (status < 0) { | |
1691 | if (status != -ENOSPC) | |
1692 | mlog_errno(status); | |
1693 | goto bail; | |
1694 | } | |
1695 | ||
1696 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1697 | if (IS_ERR(handle)) { |
1698 | status = PTR_ERR(handle); | |
1699 | handle = NULL; | |
1700 | mlog_errno(status); | |
1701 | goto bail; | |
1702 | } | |
1703 | ||
63936dda CH |
1704 | status = dquot_alloc_inode(inode); |
1705 | if (status) | |
a90714c1 | 1706 | goto bail; |
a90714c1 JK |
1707 | did_quota_inode = 1; |
1708 | ||
19bd341f TM |
1709 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, |
1710 | inode->i_mode, dentry->d_name.len, | |
1711 | dentry->d_name.name); | |
1712 | ||
1713 | status = ocfs2_mknod_locked(osb, dir, inode, | |
f5d36202 TY |
1714 | 0, &new_fe_bh, parent_fe_bh, handle, |
1715 | inode_ac); | |
ccd979bd MF |
1716 | if (status < 0) { |
1717 | mlog_errno(status); | |
1718 | goto bail; | |
1719 | } | |
1720 | ||
1721 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1722 | inode->i_rdev = 0; | |
1723 | newsize = l - 1; | |
1724 | if (l > ocfs2_fast_symlink_chars(sb)) { | |
dcd0538f MF |
1725 | u32 offset = 0; |
1726 | ||
ccd979bd | 1727 | inode->i_op = &ocfs2_symlink_inode_operations; |
5dd4056d CH |
1728 | status = dquot_alloc_space_nodirty(inode, |
1729 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1730 | if (status) | |
a90714c1 | 1731 | goto bail; |
a90714c1 | 1732 | did_quota = 1; |
0eb8d47e TM |
1733 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1734 | new_fe_bh, | |
1735 | handle, data_ac, NULL, | |
1736 | NULL); | |
ccd979bd MF |
1737 | if (status < 0) { |
1738 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1739 | mlog(ML_ERROR, |
1740 | "Failed to extend file to %llu\n", | |
1741 | (unsigned long long)newsize); | |
ccd979bd MF |
1742 | mlog_errno(status); |
1743 | status = -ENOSPC; | |
1744 | } | |
1745 | goto bail; | |
1746 | } | |
1747 | i_size_write(inode, newsize); | |
8110b073 | 1748 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd MF |
1749 | } else { |
1750 | inode->i_op = &ocfs2_fast_symlink_inode_operations; | |
1751 | memcpy((char *) fe->id2.i_symlink, symname, l); | |
1752 | i_size_write(inode, newsize); | |
1753 | inode->i_blocks = 0; | |
1754 | } | |
1755 | ||
1756 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1757 | if (status < 0) { | |
1758 | mlog_errno(status); | |
1759 | goto bail; | |
1760 | } | |
1761 | ||
1762 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
1763 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
1764 | symname); | |
1765 | if (status < 0) { | |
1766 | mlog_errno(status); | |
1767 | goto bail; | |
1768 | } | |
1769 | } | |
1770 | ||
534eaddd TY |
1771 | if (si.enable) { |
1772 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
1773 | xattr_ac, data_ac); | |
1774 | if (status < 0) { | |
1775 | mlog_errno(status); | |
1776 | goto bail; | |
1777 | } | |
1778 | } | |
1779 | ||
ccd979bd MF |
1780 | status = ocfs2_add_entry(handle, dentry, inode, |
1781 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
4a12ca3a | 1782 | &lookup); |
ccd979bd MF |
1783 | if (status < 0) { |
1784 | mlog_errno(status); | |
1785 | goto bail; | |
1786 | } | |
1787 | ||
0027dd5b | 1788 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
1789 | if (status) { |
1790 | mlog_errno(status); | |
1791 | goto bail; | |
1792 | } | |
1793 | ||
ccd979bd MF |
1794 | insert_inode_hash(inode); |
1795 | dentry->d_op = &ocfs2_dentry_ops; | |
1796 | d_instantiate(dentry, inode); | |
1797 | bail: | |
a90714c1 | 1798 | if (status < 0 && did_quota) |
5dd4056d | 1799 | dquot_free_space_nodirty(inode, |
a90714c1 JK |
1800 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
1801 | if (status < 0 && did_quota_inode) | |
63936dda | 1802 | dquot_free_inode(inode); |
ccd979bd | 1803 | if (handle) |
02dc1af4 | 1804 | ocfs2_commit_trans(osb, handle); |
6d8fc40e | 1805 | |
e63aecb6 | 1806 | ocfs2_inode_unlock(dir, 1); |
6d8fc40e | 1807 | |
a81cb88b MF |
1808 | brelse(new_fe_bh); |
1809 | brelse(parent_fe_bh); | |
534eaddd TY |
1810 | kfree(si.name); |
1811 | kfree(si.value); | |
4a12ca3a | 1812 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
1813 | if (inode_ac) |
1814 | ocfs2_free_alloc_context(inode_ac); | |
1815 | if (data_ac) | |
1816 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
1817 | if (xattr_ac) |
1818 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 | 1819 | if ((status < 0) && inode) { |
ab41fdc8 | 1820 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
f5d36202 | 1821 | clear_nlink(inode); |
ccd979bd | 1822 | iput(inode); |
f5d36202 | 1823 | } |
ccd979bd MF |
1824 | |
1825 | mlog_exit(status); | |
1826 | ||
1827 | return status; | |
1828 | } | |
1829 | ||
ccd979bd MF |
1830 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
1831 | { | |
1832 | int status, namelen; | |
1833 | ||
1834 | mlog_entry_void(); | |
1835 | ||
b0697053 MF |
1836 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
1837 | (long long)blkno); | |
ccd979bd MF |
1838 | if (namelen <= 0) { |
1839 | if (namelen) | |
1840 | status = namelen; | |
1841 | else | |
1842 | status = -EINVAL; | |
1843 | mlog_errno(status); | |
1844 | goto bail; | |
1845 | } | |
1846 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
1847 | status = -EINVAL; | |
1848 | mlog_errno(status); | |
1849 | goto bail; | |
1850 | } | |
1851 | ||
1852 | mlog(0, "built filename '%s' for orphan dir (len=%d)\n", name, | |
1853 | namelen); | |
1854 | ||
1855 | status = 0; | |
1856 | bail: | |
1857 | mlog_exit(status); | |
1858 | return status; | |
1859 | } | |
1860 | ||
1861 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
5098c27b | 1862 | struct inode **ret_orphan_dir, |
19bd341f | 1863 | u64 blkno, |
ccd979bd | 1864 | char *name, |
4a12ca3a | 1865 | struct ocfs2_dir_lookup_result *lookup) |
ccd979bd | 1866 | { |
5098c27b | 1867 | struct inode *orphan_dir_inode; |
ccd979bd MF |
1868 | struct buffer_head *orphan_dir_bh = NULL; |
1869 | int status = 0; | |
1870 | ||
19bd341f | 1871 | status = ocfs2_blkno_stringify(blkno, name); |
ccd979bd MF |
1872 | if (status < 0) { |
1873 | mlog_errno(status); | |
5098c27b | 1874 | return status; |
ccd979bd MF |
1875 | } |
1876 | ||
1877 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
1878 | ORPHAN_DIR_SYSTEM_INODE, | |
1879 | osb->slot_num); | |
1880 | if (!orphan_dir_inode) { | |
1881 | status = -ENOENT; | |
1882 | mlog_errno(status); | |
5098c27b | 1883 | return status; |
ccd979bd MF |
1884 | } |
1885 | ||
5098c27b MF |
1886 | mutex_lock(&orphan_dir_inode->i_mutex); |
1887 | ||
e63aecb6 | 1888 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
ccd979bd MF |
1889 | if (status < 0) { |
1890 | mlog_errno(status); | |
1891 | goto leave; | |
1892 | } | |
1893 | ||
1894 | status = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
1895 | orphan_dir_bh, name, | |
4a12ca3a | 1896 | OCFS2_ORPHAN_NAMELEN, lookup); |
ccd979bd | 1897 | if (status < 0) { |
e63aecb6 | 1898 | ocfs2_inode_unlock(orphan_dir_inode, 1); |
5098c27b | 1899 | |
ccd979bd MF |
1900 | mlog_errno(status); |
1901 | goto leave; | |
1902 | } | |
1903 | ||
5098c27b MF |
1904 | *ret_orphan_dir = orphan_dir_inode; |
1905 | ||
ccd979bd | 1906 | leave: |
5098c27b MF |
1907 | if (status) { |
1908 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
ccd979bd | 1909 | iput(orphan_dir_inode); |
5098c27b | 1910 | } |
ccd979bd | 1911 | |
a81cb88b | 1912 | brelse(orphan_dir_bh); |
ccd979bd MF |
1913 | |
1914 | mlog_exit(status); | |
1915 | return status; | |
1916 | } | |
1917 | ||
1918 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 1919 | handle_t *handle, |
ccd979bd | 1920 | struct inode *inode, |
3939fda4 | 1921 | struct buffer_head *fe_bh, |
ccd979bd | 1922 | char *name, |
4a12ca3a | 1923 | struct ocfs2_dir_lookup_result *lookup, |
5098c27b | 1924 | struct inode *orphan_dir_inode) |
ccd979bd | 1925 | { |
ccd979bd MF |
1926 | struct buffer_head *orphan_dir_bh = NULL; |
1927 | int status = 0; | |
1928 | struct ocfs2_dinode *orphan_fe; | |
3939fda4 | 1929 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; |
ccd979bd MF |
1930 | |
1931 | mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino); | |
1932 | ||
b657c95c | 1933 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
1934 | if (status < 0) { |
1935 | mlog_errno(status); | |
1936 | goto leave; | |
1937 | } | |
1938 | ||
0cf2f763 JB |
1939 | status = ocfs2_journal_access_di(handle, |
1940 | INODE_CACHE(orphan_dir_inode), | |
1941 | orphan_dir_bh, | |
13723d00 | 1942 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1943 | if (status < 0) { |
1944 | mlog_errno(status); | |
1945 | goto leave; | |
1946 | } | |
1947 | ||
1948 | /* we're a cluster, and nlink can change on disk from | |
1949 | * underneath us... */ | |
1950 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
1951 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 MF |
1952 | ocfs2_add_links_count(orphan_fe, 1); |
1953 | orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe); | |
ccd979bd MF |
1954 | |
1955 | status = ocfs2_journal_dirty(handle, orphan_dir_bh); | |
1956 | if (status < 0) { | |
1957 | mlog_errno(status); | |
1958 | goto leave; | |
1959 | } | |
1960 | ||
1961 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
1962 | OCFS2_ORPHAN_NAMELEN, inode, | |
1963 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 1964 | orphan_dir_bh, lookup); |
ccd979bd MF |
1965 | if (status < 0) { |
1966 | mlog_errno(status); | |
1967 | goto leave; | |
1968 | } | |
1969 | ||
3939fda4 TY |
1970 | /* |
1971 | * We're going to journal the change of i_flags and i_orphaned_slot. | |
1972 | * It's safe anyway, though some callers may duplicate the journaling. | |
1973 | * Journaling within the func just make the logic look more | |
1974 | * straightforward. | |
1975 | */ | |
1976 | status = ocfs2_journal_access_di(handle, | |
1977 | INODE_CACHE(inode), | |
1978 | fe_bh, | |
1979 | OCFS2_JOURNAL_ACCESS_WRITE); | |
1980 | if (status < 0) { | |
1981 | mlog_errno(status); | |
1982 | goto leave; | |
1983 | } | |
1984 | ||
ccd979bd | 1985 | le32_add_cpu(&fe->i_flags, OCFS2_ORPHANED_FL); |
d4cd1871 | 1986 | OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR; |
ccd979bd MF |
1987 | |
1988 | /* Record which orphan dir our inode now resides | |
1989 | * in. delete_inode will use this to determine which orphan | |
1990 | * dir to lock. */ | |
50008630 | 1991 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); |
ccd979bd | 1992 | |
3939fda4 TY |
1993 | ocfs2_journal_dirty(handle, fe_bh); |
1994 | ||
b0697053 MF |
1995 | mlog(0, "Inode %llu orphaned in slot %d\n", |
1996 | (unsigned long long)OCFS2_I(inode)->ip_blkno, osb->slot_num); | |
ccd979bd MF |
1997 | |
1998 | leave: | |
a81cb88b | 1999 | brelse(orphan_dir_bh); |
ccd979bd MF |
2000 | |
2001 | mlog_exit(status); | |
2002 | return status; | |
2003 | } | |
2004 | ||
2005 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
2006 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 2007 | handle_t *handle, |
ccd979bd MF |
2008 | struct inode *orphan_dir_inode, |
2009 | struct inode *inode, | |
2010 | struct buffer_head *orphan_dir_bh) | |
2011 | { | |
2012 | char name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2013 | struct ocfs2_dinode *orphan_fe; | |
2014 | int status = 0; | |
4a12ca3a | 2015 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
2016 | |
2017 | mlog_entry_void(); | |
2018 | ||
2019 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
2020 | if (status < 0) { | |
2021 | mlog_errno(status); | |
2022 | goto leave; | |
2023 | } | |
2024 | ||
b0697053 MF |
2025 | mlog(0, "removing '%s' from orphan dir %llu (namelen=%d)\n", |
2026 | name, (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
2027 | OCFS2_ORPHAN_NAMELEN); | |
ccd979bd MF |
2028 | |
2029 | /* find it's spot in the orphan directory */ | |
4a12ca3a MF |
2030 | status = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, orphan_dir_inode, |
2031 | &lookup); | |
2032 | if (status) { | |
ccd979bd MF |
2033 | mlog_errno(status); |
2034 | goto leave; | |
2035 | } | |
2036 | ||
2037 | /* remove it from the orphan directory */ | |
4a12ca3a | 2038 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
2039 | if (status < 0) { |
2040 | mlog_errno(status); | |
2041 | goto leave; | |
2042 | } | |
2043 | ||
0cf2f763 JB |
2044 | status = ocfs2_journal_access_di(handle, |
2045 | INODE_CACHE(orphan_dir_inode), | |
2046 | orphan_dir_bh, | |
13723d00 | 2047 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2048 | if (status < 0) { |
2049 | mlog_errno(status); | |
2050 | goto leave; | |
2051 | } | |
2052 | ||
2053 | /* do the i_nlink dance! :) */ | |
2054 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2055 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 MF |
2056 | ocfs2_add_links_count(orphan_fe, -1); |
2057 | orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe); | |
ccd979bd MF |
2058 | |
2059 | status = ocfs2_journal_dirty(handle, orphan_dir_bh); | |
2060 | if (status < 0) { | |
2061 | mlog_errno(status); | |
2062 | goto leave; | |
2063 | } | |
2064 | ||
2065 | leave: | |
4a12ca3a | 2066 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
2067 | |
2068 | mlog_exit(status); | |
2069 | return status; | |
2070 | } | |
2071 | ||
bc13d347 TM |
2072 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
2073 | int mode, | |
2074 | struct inode **new_inode) | |
2075 | { | |
2076 | int status, did_quota_inode = 0; | |
2077 | struct inode *inode = NULL; | |
2078 | struct inode *orphan_dir = NULL; | |
2079 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2080 | struct ocfs2_dinode *di = NULL; | |
2081 | handle_t *handle = NULL; | |
2082 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2083 | struct buffer_head *parent_di_bh = NULL; | |
2084 | struct buffer_head *new_di_bh = NULL; | |
2085 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2086 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
2087 | ||
2088 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2089 | if (status < 0) { | |
2090 | if (status != -ENOENT) | |
2091 | mlog_errno(status); | |
2092 | return status; | |
2093 | } | |
2094 | ||
2095 | /* | |
2096 | * We give the orphan dir the root blkno to fake an orphan name, | |
2097 | * and allocate enough space for our insertion. | |
2098 | */ | |
2099 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, | |
2100 | osb->root_blkno, | |
2101 | orphan_name, &orphan_insert); | |
2102 | if (status < 0) { | |
2103 | mlog_errno(status); | |
2104 | goto leave; | |
2105 | } | |
2106 | ||
2107 | /* reserve an inode spot */ | |
2108 | status = ocfs2_reserve_new_inode(osb, &inode_ac); | |
2109 | if (status < 0) { | |
2110 | if (status != -ENOSPC) | |
2111 | mlog_errno(status); | |
2112 | goto leave; | |
2113 | } | |
2114 | ||
2115 | inode = ocfs2_get_init_inode(dir, mode); | |
2116 | if (!inode) { | |
2117 | status = -ENOMEM; | |
2118 | mlog_errno(status); | |
2119 | goto leave; | |
2120 | } | |
2121 | ||
2122 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); | |
2123 | if (IS_ERR(handle)) { | |
2124 | status = PTR_ERR(handle); | |
2125 | handle = NULL; | |
2126 | mlog_errno(status); | |
2127 | goto leave; | |
2128 | } | |
2129 | ||
63936dda CH |
2130 | status = dquot_alloc_inode(inode); |
2131 | if (status) | |
bc13d347 | 2132 | goto leave; |
bc13d347 TM |
2133 | did_quota_inode = 1; |
2134 | ||
10cf1a02 | 2135 | inode->i_nlink = 0; |
bc13d347 TM |
2136 | /* do the real work now. */ |
2137 | status = ocfs2_mknod_locked(osb, dir, inode, | |
2138 | 0, &new_di_bh, parent_di_bh, handle, | |
2139 | inode_ac); | |
2140 | if (status < 0) { | |
2141 | mlog_errno(status); | |
2142 | goto leave; | |
2143 | } | |
2144 | ||
2145 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, orphan_name); | |
2146 | if (status < 0) { | |
2147 | mlog_errno(status); | |
2148 | goto leave; | |
2149 | } | |
2150 | ||
2151 | di = (struct ocfs2_dinode *)new_di_bh->b_data; | |
3939fda4 | 2152 | status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name, |
bc13d347 TM |
2153 | &orphan_insert, orphan_dir); |
2154 | if (status < 0) { | |
2155 | mlog_errno(status); | |
2156 | goto leave; | |
2157 | } | |
2158 | ||
2159 | /* get open lock so that only nodes can't remove it from orphan dir. */ | |
2160 | status = ocfs2_open_lock(inode); | |
2161 | if (status < 0) | |
2162 | mlog_errno(status); | |
2163 | ||
c7d260af | 2164 | insert_inode_hash(inode); |
bc13d347 TM |
2165 | leave: |
2166 | if (status < 0 && did_quota_inode) | |
63936dda | 2167 | dquot_free_inode(inode); |
bc13d347 TM |
2168 | if (handle) |
2169 | ocfs2_commit_trans(osb, handle); | |
2170 | ||
2171 | if (orphan_dir) { | |
2172 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
2173 | ocfs2_inode_unlock(orphan_dir, 1); | |
2174 | mutex_unlock(&orphan_dir->i_mutex); | |
2175 | iput(orphan_dir); | |
2176 | } | |
2177 | ||
2178 | if (status == -ENOSPC) | |
2179 | mlog(0, "Disk is full\n"); | |
2180 | ||
2181 | if ((status < 0) && inode) { | |
2182 | clear_nlink(inode); | |
2183 | iput(inode); | |
2184 | } | |
2185 | ||
2186 | if (inode_ac) | |
2187 | ocfs2_free_alloc_context(inode_ac); | |
2188 | ||
2189 | brelse(new_di_bh); | |
2190 | ||
2191 | if (!status) | |
2192 | *new_inode = inode; | |
2193 | ||
2194 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2195 | ||
2196 | ocfs2_inode_unlock(dir, 1); | |
2197 | brelse(parent_di_bh); | |
2198 | return status; | |
2199 | } | |
2200 | ||
2201 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, | |
2202 | struct inode *inode, | |
2203 | struct dentry *dentry) | |
2204 | { | |
2205 | int status = 0; | |
2206 | struct buffer_head *parent_di_bh = NULL; | |
2207 | handle_t *handle = NULL; | |
2208 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2209 | struct ocfs2_dinode *dir_di, *di; | |
2210 | struct inode *orphan_dir_inode = NULL; | |
2211 | struct buffer_head *orphan_dir_bh = NULL; | |
2212 | struct buffer_head *di_bh = NULL; | |
2213 | struct ocfs2_dir_lookup_result lookup = { NULL, }; | |
2214 | ||
2215 | mlog_entry("(0x%p, 0x%p, %.*s')\n", dir, dentry, | |
2216 | dentry->d_name.len, dentry->d_name.name); | |
2217 | ||
2218 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2219 | if (status < 0) { | |
2220 | if (status != -ENOENT) | |
2221 | mlog_errno(status); | |
2222 | return status; | |
2223 | } | |
2224 | ||
2225 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; | |
2226 | if (!dir_di->i_links_count) { | |
2227 | /* can't make a file in a deleted directory. */ | |
2228 | status = -ENOENT; | |
2229 | goto leave; | |
2230 | } | |
2231 | ||
2232 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
2233 | dentry->d_name.len); | |
2234 | if (status) | |
2235 | goto leave; | |
2236 | ||
2237 | /* get a spot inside the dir. */ | |
2238 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, | |
2239 | dentry->d_name.name, | |
2240 | dentry->d_name.len, &lookup); | |
2241 | if (status < 0) { | |
2242 | mlog_errno(status); | |
2243 | goto leave; | |
2244 | } | |
2245 | ||
2246 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2247 | ORPHAN_DIR_SYSTEM_INODE, | |
2248 | osb->slot_num); | |
2249 | if (!orphan_dir_inode) { | |
2250 | status = -EEXIST; | |
2251 | mlog_errno(status); | |
2252 | goto leave; | |
2253 | } | |
2254 | ||
2255 | mutex_lock(&orphan_dir_inode->i_mutex); | |
2256 | ||
2257 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2258 | if (status < 0) { | |
2259 | mlog_errno(status); | |
2260 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2261 | iput(orphan_dir_inode); | |
2262 | goto leave; | |
2263 | } | |
2264 | ||
2265 | status = ocfs2_read_inode_block(inode, &di_bh); | |
2266 | if (status < 0) { | |
2267 | mlog_errno(status); | |
2268 | goto orphan_unlock; | |
2269 | } | |
2270 | ||
2271 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); | |
2272 | if (IS_ERR(handle)) { | |
2273 | status = PTR_ERR(handle); | |
2274 | handle = NULL; | |
2275 | mlog_errno(status); | |
2276 | goto orphan_unlock; | |
2277 | } | |
2278 | ||
2279 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), | |
2280 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2281 | if (status < 0) { | |
2282 | mlog_errno(status); | |
2283 | goto out_commit; | |
2284 | } | |
2285 | ||
2286 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
2287 | orphan_dir_bh); | |
2288 | if (status < 0) { | |
2289 | mlog_errno(status); | |
2290 | goto out_commit; | |
2291 | } | |
2292 | ||
2293 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
2294 | le32_add_cpu(&di->i_flags, -OCFS2_ORPHANED_FL); | |
2295 | di->i_orphaned_slot = 0; | |
10cf1a02 TM |
2296 | inode->i_nlink = 1; |
2297 | ocfs2_set_links_count(di, inode->i_nlink); | |
bc13d347 TM |
2298 | ocfs2_journal_dirty(handle, di_bh); |
2299 | ||
2300 | status = ocfs2_add_entry(handle, dentry, inode, | |
2301 | OCFS2_I(inode)->ip_blkno, parent_di_bh, | |
2302 | &lookup); | |
2303 | if (status < 0) { | |
2304 | mlog_errno(status); | |
2305 | goto out_commit; | |
2306 | } | |
2307 | ||
2308 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
2309 | OCFS2_I(dir)->ip_blkno); | |
2310 | if (status) { | |
2311 | mlog_errno(status); | |
2312 | goto out_commit; | |
2313 | } | |
2314 | ||
bc13d347 TM |
2315 | dentry->d_op = &ocfs2_dentry_ops; |
2316 | d_instantiate(dentry, inode); | |
2317 | status = 0; | |
2318 | out_commit: | |
2319 | ocfs2_commit_trans(osb, handle); | |
2320 | orphan_unlock: | |
2321 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
2322 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2323 | iput(orphan_dir_inode); | |
2324 | leave: | |
2325 | ||
2326 | ocfs2_inode_unlock(dir, 1); | |
2327 | ||
2328 | brelse(di_bh); | |
2329 | brelse(parent_di_bh); | |
2330 | brelse(orphan_dir_bh); | |
2331 | ||
2332 | ocfs2_free_dir_lookup_result(&lookup); | |
2333 | ||
2334 | mlog_exit(status); | |
2335 | ||
2336 | return status; | |
2337 | } | |
2338 | ||
92e1d5be | 2339 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2340 | .create = ocfs2_create, |
2341 | .lookup = ocfs2_lookup, | |
2342 | .link = ocfs2_link, | |
2343 | .unlink = ocfs2_unlink, | |
2344 | .rmdir = ocfs2_unlink, | |
2345 | .symlink = ocfs2_symlink, | |
2346 | .mkdir = ocfs2_mkdir, | |
2347 | .mknod = ocfs2_mknod, | |
2348 | .rename = ocfs2_rename, | |
2349 | .setattr = ocfs2_setattr, | |
2350 | .getattr = ocfs2_getattr, | |
d38eb8db | 2351 | .permission = ocfs2_permission, |
cf1d6c76 TY |
2352 | .setxattr = generic_setxattr, |
2353 | .getxattr = generic_getxattr, | |
2354 | .listxattr = ocfs2_listxattr, | |
2355 | .removexattr = generic_removexattr, | |
55f4946e | 2356 | .fiemap = ocfs2_fiemap, |
ccd979bd | 2357 | }; |