]>
Commit | Line | Data |
---|---|---|
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 MF |
86 | struct inode *inode, |
87 | struct ocfs2_dinode *fe, | |
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); |
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 | ||
ccd979bd MF |
407 | status = ocfs2_add_entry(handle, dentry, inode, |
408 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
4a12ca3a | 409 | &lookup); |
ccd979bd MF |
410 | if (status < 0) { |
411 | mlog_errno(status); | |
412 | goto leave; | |
413 | } | |
414 | ||
379dfe9d | 415 | status = ocfs2_dentry_attach_lock(dentry, inode, |
0027dd5b | 416 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
417 | if (status) { |
418 | mlog_errno(status); | |
419 | goto leave; | |
420 | } | |
421 | ||
ccd979bd MF |
422 | insert_inode_hash(inode); |
423 | dentry->d_op = &ocfs2_dentry_ops; | |
424 | d_instantiate(dentry, inode); | |
425 | status = 0; | |
426 | leave: | |
a90714c1 | 427 | if (status < 0 && did_quota_inode) |
63936dda | 428 | dquot_free_inode(inode); |
ccd979bd | 429 | if (handle) |
02dc1af4 | 430 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 431 | |
e63aecb6 | 432 | ocfs2_inode_unlock(dir, 1); |
e3a82138 | 433 | |
ccd979bd MF |
434 | if (status == -ENOSPC) |
435 | mlog(0, "Disk is full\n"); | |
436 | ||
a81cb88b | 437 | brelse(new_fe_bh); |
a81cb88b | 438 | brelse(parent_fe_bh); |
534eaddd TY |
439 | kfree(si.name); |
440 | kfree(si.value); | |
ccd979bd | 441 | |
4a12ca3a MF |
442 | ocfs2_free_dir_lookup_result(&lookup); |
443 | ||
f5d36202 TY |
444 | if ((status < 0) && inode) { |
445 | clear_nlink(inode); | |
ccd979bd | 446 | iput(inode); |
f5d36202 | 447 | } |
ccd979bd MF |
448 | |
449 | if (inode_ac) | |
450 | ocfs2_free_alloc_context(inode_ac); | |
451 | ||
452 | if (data_ac) | |
453 | ocfs2_free_alloc_context(data_ac); | |
454 | ||
9b7895ef MF |
455 | if (meta_ac) |
456 | ocfs2_free_alloc_context(meta_ac); | |
534eaddd | 457 | |
ccd979bd MF |
458 | mlog_exit(status); |
459 | ||
460 | return status; | |
461 | } | |
462 | ||
463 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, | |
464 | struct inode *dir, | |
f5d36202 | 465 | struct inode *inode, |
ccd979bd MF |
466 | dev_t dev, |
467 | struct buffer_head **new_fe_bh, | |
468 | struct buffer_head *parent_fe_bh, | |
1fabe148 | 469 | handle_t *handle, |
ccd979bd MF |
470 | struct ocfs2_alloc_context *inode_ac) |
471 | { | |
472 | int status = 0; | |
473 | struct ocfs2_dinode *fe = NULL; | |
474 | struct ocfs2_extent_list *fel; | |
2b6cb576 | 475 | u64 suballoc_loc, fe_blkno = 0; |
ccd979bd | 476 | u16 suballoc_bit; |
9b7895ef | 477 | u16 feat; |
ccd979bd | 478 | |
ccd979bd | 479 | *new_fe_bh = NULL; |
ccd979bd | 480 | |
1ed9b777 | 481 | status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh, |
2b6cb576 JB |
482 | inode_ac, &suballoc_loc, |
483 | &suballoc_bit, &fe_blkno); | |
ccd979bd MF |
484 | if (status < 0) { |
485 | mlog_errno(status); | |
486 | goto leave; | |
487 | } | |
488 | ||
ccd979bd MF |
489 | /* populate as many fields early on as possible - many of |
490 | * these are used by the support functions here and in | |
491 | * callers. */ | |
492 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
493 | OCFS2_I(inode)->ip_blkno = fe_blkno; | |
ccd979bd MF |
494 | spin_lock(&osb->osb_lock); |
495 | inode->i_generation = osb->s_next_generation++; | |
496 | spin_unlock(&osb->osb_lock); | |
497 | ||
498 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
499 | if (!*new_fe_bh) { | |
500 | status = -EIO; | |
501 | mlog_errno(status); | |
502 | goto leave; | |
503 | } | |
8cb471e8 | 504 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
ccd979bd | 505 | |
0cf2f763 JB |
506 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
507 | *new_fe_bh, | |
13723d00 | 508 | OCFS2_JOURNAL_ACCESS_CREATE); |
ccd979bd MF |
509 | if (status < 0) { |
510 | mlog_errno(status); | |
511 | goto leave; | |
512 | } | |
513 | ||
514 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
515 | memset(fe, 0, osb->sb->s_blocksize); | |
516 | ||
517 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
518 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
519 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
2b6cb576 | 520 | fe->i_suballoc_loc = cpu_to_le64(suballoc_loc); |
ccd979bd | 521 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); |
4d0ddb2c | 522 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
f5d36202 TY |
523 | fe->i_uid = cpu_to_le32(inode->i_uid); |
524 | fe->i_gid = cpu_to_le32(inode->i_gid); | |
525 | fe->i_mode = cpu_to_le16(inode->i_mode); | |
526 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 527 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
198a1ca3 MF |
528 | |
529 | ocfs2_set_links_count(fe, inode->i_nlink); | |
ccd979bd MF |
530 | |
531 | fe->i_last_eb_blk = 0; | |
532 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
533 | le32_add_cpu(&fe->i_flags, OCFS2_VALID_FL); | |
534 | fe->i_atime = fe->i_ctime = fe->i_mtime = | |
535 | cpu_to_le64(CURRENT_TIME.tv_sec); | |
536 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = | |
537 | cpu_to_le32(CURRENT_TIME.tv_nsec); | |
538 | fe->i_dtime = 0; | |
539 | ||
5b6a3a2b | 540 | /* |
9b7895ef MF |
541 | * If supported, directories start with inline data. If inline |
542 | * isn't supported, but indexing is, we start them as indexed. | |
5b6a3a2b | 543 | */ |
9b7895ef | 544 | feat = le16_to_cpu(fe->i_dyn_features); |
f5d36202 | 545 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
546 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
547 | ||
d9ae49d6 TY |
548 | fe->id2.i_data.id_count = cpu_to_le16( |
549 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); | |
5b6a3a2b MF |
550 | } else { |
551 | fel = &fe->id2.i_list; | |
552 | fel->l_tree_depth = 0; | |
553 | fel->l_next_free_rec = 0; | |
554 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
555 | } | |
ccd979bd | 556 | |
ec20cec7 | 557 | ocfs2_journal_dirty(handle, *new_fe_bh); |
ccd979bd | 558 | |
b657c95c | 559 | ocfs2_populate_inode(inode, fe, 1); |
0cf2f763 | 560 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
c271c5c2 SM |
561 | if (!ocfs2_mount_local(osb)) { |
562 | status = ocfs2_create_new_inode_locks(inode); | |
563 | if (status < 0) | |
564 | mlog_errno(status); | |
565 | } | |
ccd979bd MF |
566 | |
567 | status = 0; /* error in ocfs2_create_new_inode_locks is not | |
568 | * critical */ | |
569 | ||
ccd979bd MF |
570 | leave: |
571 | if (status < 0) { | |
572 | if (*new_fe_bh) { | |
573 | brelse(*new_fe_bh); | |
574 | *new_fe_bh = NULL; | |
575 | } | |
ccd979bd MF |
576 | } |
577 | ||
578 | mlog_exit(status); | |
579 | return status; | |
580 | } | |
581 | ||
582 | static int ocfs2_mkdir(struct inode *dir, | |
583 | struct dentry *dentry, | |
584 | int mode) | |
585 | { | |
586 | int ret; | |
587 | ||
588 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, | |
589 | dentry->d_name.len, dentry->d_name.name); | |
590 | ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0); | |
591 | mlog_exit(ret); | |
592 | ||
593 | return ret; | |
594 | } | |
595 | ||
596 | static int ocfs2_create(struct inode *dir, | |
597 | struct dentry *dentry, | |
598 | int mode, | |
599 | struct nameidata *nd) | |
600 | { | |
601 | int ret; | |
602 | ||
603 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, | |
604 | dentry->d_name.len, dentry->d_name.name); | |
605 | ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0); | |
606 | mlog_exit(ret); | |
607 | ||
608 | return ret; | |
609 | } | |
610 | ||
611 | static int ocfs2_link(struct dentry *old_dentry, | |
612 | struct inode *dir, | |
613 | struct dentry *dentry) | |
614 | { | |
1fabe148 | 615 | handle_t *handle; |
ccd979bd MF |
616 | struct inode *inode = old_dentry->d_inode; |
617 | int err; | |
618 | struct buffer_head *fe_bh = NULL; | |
619 | struct buffer_head *parent_fe_bh = NULL; | |
ccd979bd MF |
620 | struct ocfs2_dinode *fe = NULL; |
621 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
4a12ca3a | 622 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
623 | |
624 | mlog_entry("(inode=%lu, old='%.*s' new='%.*s')\n", inode->i_ino, | |
625 | old_dentry->d_name.len, old_dentry->d_name.name, | |
626 | dentry->d_name.len, dentry->d_name.name); | |
627 | ||
123a9643 MF |
628 | if (S_ISDIR(inode->i_mode)) |
629 | return -EPERM; | |
ccd979bd | 630 | |
871a2931 | 631 | dquot_initialize(dir); |
907f4554 | 632 | |
cb25797d | 633 | err = ocfs2_inode_lock_nested(dir, &parent_fe_bh, 1, OI_LS_PARENT); |
ccd979bd MF |
634 | if (err < 0) { |
635 | if (err != -ENOENT) | |
636 | mlog_errno(err); | |
123a9643 | 637 | return err; |
ccd979bd MF |
638 | } |
639 | ||
0f62de2c TY |
640 | if (!dir->i_nlink) { |
641 | err = -ENOENT; | |
123a9643 | 642 | goto out; |
0f62de2c TY |
643 | } |
644 | ||
ccd979bd MF |
645 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
646 | dentry->d_name.len); | |
647 | if (err) | |
123a9643 | 648 | goto out; |
ccd979bd MF |
649 | |
650 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
651 | dentry->d_name.name, | |
4a12ca3a | 652 | dentry->d_name.len, &lookup); |
ccd979bd MF |
653 | if (err < 0) { |
654 | mlog_errno(err); | |
123a9643 | 655 | goto out; |
ccd979bd MF |
656 | } |
657 | ||
e63aecb6 | 658 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
659 | if (err < 0) { |
660 | if (err != -ENOENT) | |
661 | mlog_errno(err); | |
123a9643 | 662 | goto out; |
ccd979bd MF |
663 | } |
664 | ||
665 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
198a1ca3 | 666 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
ccd979bd | 667 | err = -EMLINK; |
123a9643 | 668 | goto out_unlock_inode; |
ccd979bd MF |
669 | } |
670 | ||
a90714c1 | 671 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
672 | if (IS_ERR(handle)) { |
673 | err = PTR_ERR(handle); | |
674 | handle = NULL; | |
675 | mlog_errno(err); | |
123a9643 | 676 | goto out_unlock_inode; |
ccd979bd MF |
677 | } |
678 | ||
0cf2f763 | 679 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 680 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
681 | if (err < 0) { |
682 | mlog_errno(err); | |
123a9643 | 683 | goto out_commit; |
ccd979bd MF |
684 | } |
685 | ||
d8c76e6f | 686 | inc_nlink(inode); |
ccd979bd | 687 | inode->i_ctime = CURRENT_TIME; |
198a1ca3 | 688 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
689 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
690 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
ec20cec7 | 691 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd MF |
692 | |
693 | err = ocfs2_add_entry(handle, dentry, inode, | |
694 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 695 | parent_fe_bh, &lookup); |
ccd979bd | 696 | if (err) { |
198a1ca3 | 697 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 698 | drop_nlink(inode); |
ccd979bd | 699 | mlog_errno(err); |
123a9643 | 700 | goto out_commit; |
ccd979bd MF |
701 | } |
702 | ||
0027dd5b | 703 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
704 | if (err) { |
705 | mlog_errno(err); | |
123a9643 | 706 | goto out_commit; |
379dfe9d MF |
707 | } |
708 | ||
ccd979bd MF |
709 | atomic_inc(&inode->i_count); |
710 | dentry->d_op = &ocfs2_dentry_ops; | |
711 | d_instantiate(dentry, inode); | |
123a9643 MF |
712 | |
713 | out_commit: | |
02dc1af4 | 714 | ocfs2_commit_trans(osb, handle); |
123a9643 | 715 | out_unlock_inode: |
e63aecb6 | 716 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
717 | |
718 | out: | |
e63aecb6 | 719 | ocfs2_inode_unlock(dir, 1); |
123a9643 | 720 | |
a81cb88b MF |
721 | brelse(fe_bh); |
722 | brelse(parent_fe_bh); | |
ccd979bd | 723 | |
4a12ca3a MF |
724 | ocfs2_free_dir_lookup_result(&lookup); |
725 | ||
ccd979bd MF |
726 | mlog_exit(err); |
727 | ||
728 | return err; | |
729 | } | |
730 | ||
379dfe9d MF |
731 | /* |
732 | * Takes and drops an exclusive lock on the given dentry. This will | |
733 | * force other nodes to drop it. | |
734 | */ | |
735 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
736 | { | |
737 | int ret; | |
738 | ||
739 | ret = ocfs2_dentry_lock(dentry, 1); | |
740 | if (ret) | |
741 | mlog_errno(ret); | |
742 | else | |
743 | ocfs2_dentry_unlock(dentry, 1); | |
744 | ||
745 | return ret; | |
746 | } | |
747 | ||
17ff7856 MF |
748 | static inline int inode_is_unlinkable(struct inode *inode) |
749 | { | |
750 | if (S_ISDIR(inode->i_mode)) { | |
751 | if (inode->i_nlink == 2) | |
752 | return 1; | |
753 | return 0; | |
754 | } | |
755 | ||
756 | if (inode->i_nlink == 1) | |
757 | return 1; | |
758 | return 0; | |
759 | } | |
760 | ||
ccd979bd MF |
761 | static int ocfs2_unlink(struct inode *dir, |
762 | struct dentry *dentry) | |
763 | { | |
764 | int status; | |
30a4f5e8 | 765 | int child_locked = 0; |
ccd979bd | 766 | struct inode *inode = dentry->d_inode; |
5098c27b | 767 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
768 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
769 | u64 blkno; | |
770 | struct ocfs2_dinode *fe = NULL; | |
771 | struct buffer_head *fe_bh = NULL; | |
772 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 773 | handle_t *handle = NULL; |
ccd979bd | 774 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
775 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
776 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd MF |
777 | |
778 | mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry, | |
779 | dentry->d_name.len, dentry->d_name.name); | |
780 | ||
871a2931 | 781 | dquot_initialize(dir); |
907f4554 | 782 | |
ccd979bd MF |
783 | BUG_ON(dentry->d_parent->d_inode != dir); |
784 | ||
b0697053 | 785 | mlog(0, "ino = %llu\n", (unsigned long long)OCFS2_I(inode)->ip_blkno); |
ccd979bd MF |
786 | |
787 | if (inode == osb->root_inode) { | |
788 | mlog(0, "Cannot delete the root directory\n"); | |
30a4f5e8 | 789 | return -EPERM; |
ccd979bd MF |
790 | } |
791 | ||
cb25797d JK |
792 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
793 | OI_LS_PARENT); | |
ccd979bd MF |
794 | if (status < 0) { |
795 | if (status != -ENOENT) | |
796 | mlog_errno(status); | |
30a4f5e8 | 797 | return status; |
ccd979bd MF |
798 | } |
799 | ||
800 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
801 | dentry->d_name.len, &blkno, dir, |
802 | &lookup); | |
ccd979bd MF |
803 | if (status < 0) { |
804 | if (status != -ENOENT) | |
805 | mlog_errno(status); | |
806 | goto leave; | |
807 | } | |
808 | ||
809 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
810 | status = -ENOENT; | |
811 | ||
b0697053 MF |
812 | mlog(0, "ip_blkno %llu != dirent blkno %llu ip_flags = %x\n", |
813 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
814 | (unsigned long long)blkno, OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
815 | goto leave; |
816 | } | |
817 | ||
e63aecb6 | 818 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
819 | if (status < 0) { |
820 | if (status != -ENOENT) | |
821 | mlog_errno(status); | |
822 | goto leave; | |
823 | } | |
30a4f5e8 | 824 | child_locked = 1; |
ccd979bd MF |
825 | |
826 | if (S_ISDIR(inode->i_mode)) { | |
b80b549c | 827 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
ccd979bd MF |
828 | status = -ENOTEMPTY; |
829 | goto leave; | |
830 | } | |
831 | } | |
832 | ||
379dfe9d | 833 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 834 | if (status < 0) { |
34d024f8 | 835 | /* This remote delete should succeed under all normal |
ccd979bd MF |
836 | * circumstances. */ |
837 | mlog_errno(status); | |
838 | goto leave; | |
839 | } | |
840 | ||
17ff7856 | 841 | if (inode_is_unlinkable(inode)) { |
19bd341f TM |
842 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
843 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 844 | orphan_name, &orphan_insert); |
ccd979bd MF |
845 | if (status < 0) { |
846 | mlog_errno(status); | |
847 | goto leave; | |
848 | } | |
849 | } | |
850 | ||
a90714c1 | 851 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
852 | if (IS_ERR(handle)) { |
853 | status = PTR_ERR(handle); | |
854 | handle = NULL; | |
855 | mlog_errno(status); | |
856 | goto leave; | |
857 | } | |
858 | ||
0cf2f763 | 859 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 860 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
861 | if (status < 0) { |
862 | mlog_errno(status); | |
863 | goto leave; | |
864 | } | |
865 | ||
866 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
867 | ||
17ff7856 | 868 | if (inode_is_unlinkable(inode)) { |
ccd979bd | 869 | status = ocfs2_orphan_add(osb, handle, inode, fe, orphan_name, |
4a12ca3a | 870 | &orphan_insert, orphan_dir); |
ccd979bd MF |
871 | if (status < 0) { |
872 | mlog_errno(status); | |
873 | goto leave; | |
874 | } | |
875 | } | |
876 | ||
877 | /* delete the name from the parent dir */ | |
4a12ca3a | 878 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
879 | if (status < 0) { |
880 | mlog_errno(status); | |
881 | goto leave; | |
882 | } | |
883 | ||
17ff7856 MF |
884 | if (S_ISDIR(inode->i_mode)) |
885 | drop_nlink(inode); | |
886 | drop_nlink(inode); | |
198a1ca3 | 887 | ocfs2_set_links_count(fe, inode->i_nlink); |
ec20cec7 | 888 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd | 889 | |
592282cf MF |
890 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; |
891 | if (S_ISDIR(inode->i_mode)) | |
17ff7856 | 892 | drop_nlink(dir); |
592282cf MF |
893 | |
894 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
895 | if (status < 0) { | |
896 | mlog_errno(status); | |
897 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 898 | inc_nlink(dir); |
ccd979bd MF |
899 | } |
900 | ||
901 | leave: | |
ccd979bd | 902 | if (handle) |
02dc1af4 | 903 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 904 | |
30a4f5e8 | 905 | if (child_locked) |
e63aecb6 | 906 | ocfs2_inode_unlock(inode, 1); |
30a4f5e8 | 907 | |
e63aecb6 | 908 | ocfs2_inode_unlock(dir, 1); |
30a4f5e8 | 909 | |
5098c27b MF |
910 | if (orphan_dir) { |
911 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 912 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
913 | mutex_unlock(&orphan_dir->i_mutex); |
914 | iput(orphan_dir); | |
915 | } | |
916 | ||
a81cb88b | 917 | brelse(fe_bh); |
a81cb88b | 918 | brelse(parent_node_bh); |
4a12ca3a MF |
919 | |
920 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
921 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd MF |
922 | |
923 | mlog_exit(status); | |
924 | ||
925 | return status; | |
926 | } | |
927 | ||
928 | /* | |
929 | * The only place this should be used is rename! | |
930 | * if they have the same id, then the 1st one is the only one locked. | |
931 | */ | |
932 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
933 | struct buffer_head **bh1, |
934 | struct inode *inode1, | |
935 | struct buffer_head **bh2, | |
936 | struct inode *inode2) | |
937 | { | |
938 | int status; | |
939 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); | |
940 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
941 | struct buffer_head **tmpbh; | |
942 | struct inode *tmpinode; | |
943 | ||
b0697053 MF |
944 | mlog_entry("(inode1 = %llu, inode2 = %llu)\n", |
945 | (unsigned long long)oi1->ip_blkno, | |
946 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 947 | |
ccd979bd MF |
948 | if (*bh1) |
949 | *bh1 = NULL; | |
950 | if (*bh2) | |
951 | *bh2 = NULL; | |
952 | ||
953 | /* we always want to lock the one with the lower lockid first. */ | |
954 | if (oi1->ip_blkno != oi2->ip_blkno) { | |
955 | if (oi1->ip_blkno < oi2->ip_blkno) { | |
956 | /* switch id1 and id2 around */ | |
957 | mlog(0, "switching them around...\n"); | |
958 | tmpbh = bh2; | |
959 | bh2 = bh1; | |
960 | bh1 = tmpbh; | |
961 | ||
962 | tmpinode = inode2; | |
963 | inode2 = inode1; | |
964 | inode1 = tmpinode; | |
965 | } | |
966 | /* lock id2 */ | |
cb25797d JK |
967 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
968 | OI_LS_RENAME1); | |
ccd979bd MF |
969 | if (status < 0) { |
970 | if (status != -ENOENT) | |
971 | mlog_errno(status); | |
972 | goto bail; | |
973 | } | |
974 | } | |
8d5596c6 | 975 | |
ccd979bd | 976 | /* lock id1 */ |
cb25797d | 977 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, OI_LS_RENAME2); |
ccd979bd | 978 | if (status < 0) { |
8d5596c6 MF |
979 | /* |
980 | * An error return must mean that no cluster locks | |
981 | * were held on function exit. | |
982 | */ | |
983 | if (oi1->ip_blkno != oi2->ip_blkno) | |
e63aecb6 | 984 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 | 985 | |
ccd979bd MF |
986 | if (status != -ENOENT) |
987 | mlog_errno(status); | |
ccd979bd | 988 | } |
8d5596c6 | 989 | |
ccd979bd MF |
990 | bail: |
991 | mlog_exit(status); | |
992 | return status; | |
993 | } | |
994 | ||
8d5596c6 MF |
995 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
996 | { | |
e63aecb6 | 997 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
998 | |
999 | if (inode1 != inode2) | |
e63aecb6 | 1000 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1001 | } |
1002 | ||
ccd979bd MF |
1003 | static int ocfs2_rename(struct inode *old_dir, |
1004 | struct dentry *old_dentry, | |
1005 | struct inode *new_dir, | |
1006 | struct dentry *new_dentry) | |
1007 | { | |
4a12ca3a MF |
1008 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1009 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
ccd979bd MF |
1010 | struct inode *old_inode = old_dentry->d_inode; |
1011 | struct inode *new_inode = new_dentry->d_inode; | |
5098c27b | 1012 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1013 | struct ocfs2_dinode *newfe = NULL; |
1014 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
ccd979bd | 1015 | struct buffer_head *newfe_bh = NULL; |
592282cf | 1016 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd | 1017 | struct ocfs2_super *osb = NULL; |
5b6a3a2b | 1018 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1019 | handle_t *handle = NULL; |
ccd979bd MF |
1020 | struct buffer_head *old_dir_bh = NULL; |
1021 | struct buffer_head *new_dir_bh = NULL; | |
592282cf | 1022 | nlink_t old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1023 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1024 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1025 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1026 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1027 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1028 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
ccd979bd MF |
1029 | |
1030 | /* At some point it might be nice to break this function up a | |
1031 | * bit. */ | |
1032 | ||
1033 | mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p, from='%.*s' to='%.*s')\n", | |
1034 | old_dir, old_dentry, new_dir, new_dentry, | |
1035 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1036 | new_dentry->d_name.len, new_dentry->d_name.name); | |
1037 | ||
871a2931 CH |
1038 | dquot_initialize(old_dir); |
1039 | dquot_initialize(new_dir); | |
907f4554 | 1040 | |
ccd979bd MF |
1041 | osb = OCFS2_SB(old_dir->i_sb); |
1042 | ||
1043 | if (new_inode) { | |
1044 | if (!igrab(new_inode)) | |
1045 | BUG(); | |
1046 | } | |
1047 | ||
1b3c3714 | 1048 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1049 | * a/b/c |
1050 | * a/d | |
1051 | * a,b,c, and d are all directories. | |
1052 | * | |
1053 | * from cwd of 'a' on both nodes: | |
1054 | * node1: mv b/c d | |
1055 | * node2: mv d b/c | |
1056 | * | |
1057 | * And that's why, just like the VFS, we need a file system | |
1058 | * rename lock. */ | |
5dabd695 | 1059 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1060 | status = ocfs2_rename_lock(osb); |
1061 | if (status < 0) { | |
1062 | mlog_errno(status); | |
1063 | goto bail; | |
1064 | } | |
1065 | rename_lock = 1; | |
1066 | } | |
1067 | ||
ccd979bd | 1068 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 MF |
1069 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
1070 | &new_dir_bh, new_dir); | |
ccd979bd MF |
1071 | if (status < 0) { |
1072 | mlog_errno(status); | |
1073 | goto bail; | |
1074 | } | |
8d5596c6 | 1075 | parents_locked = 1; |
ccd979bd MF |
1076 | |
1077 | /* make sure both dirs have bhs | |
1078 | * get an extra ref on old_dir_bh if old==new */ | |
1079 | if (!new_dir_bh) { | |
1080 | if (old_dir_bh) { | |
1081 | new_dir_bh = old_dir_bh; | |
1082 | get_bh(new_dir_bh); | |
1083 | } else { | |
1084 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1085 | status = -EIO; | |
1086 | goto bail; | |
1087 | } | |
1088 | } | |
1089 | ||
379dfe9d | 1090 | /* |
592282cf | 1091 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1092 | * also ensures that the downconvert thread on other nodes |
1093 | * won't have to concurrently downconvert the inode and the | |
1094 | * dentry locks. | |
379dfe9d | 1095 | */ |
cb25797d JK |
1096 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
1097 | OI_LS_PARENT); | |
379dfe9d MF |
1098 | if (status < 0) { |
1099 | if (status != -ENOENT) | |
ccd979bd | 1100 | mlog_errno(status); |
379dfe9d MF |
1101 | goto bail; |
1102 | } | |
8d5596c6 | 1103 | old_child_locked = 1; |
ccd979bd | 1104 | |
379dfe9d MF |
1105 | status = ocfs2_remote_dentry_delete(old_dentry); |
1106 | if (status < 0) { | |
1107 | mlog_errno(status); | |
1108 | goto bail; | |
1109 | } | |
1110 | ||
1111 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1112 | u64 old_inode_parent; |
1113 | ||
4a12ca3a | 1114 | update_dot_dot = 1; |
38760e24 | 1115 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1116 | old_inode, |
1117 | &old_inode_dot_dot_res); | |
38760e24 MF |
1118 | if (status) { |
1119 | status = -EIO; | |
ccd979bd | 1120 | goto bail; |
38760e24 | 1121 | } |
ccd979bd | 1122 | |
38760e24 MF |
1123 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1124 | status = -EIO; | |
ccd979bd | 1125 | goto bail; |
38760e24 MF |
1126 | } |
1127 | ||
1128 | if (!new_inode && new_dir != old_dir && | |
198a1ca3 | 1129 | new_dir->i_nlink >= ocfs2_link_max(osb)) { |
38760e24 | 1130 | status = -EMLINK; |
ccd979bd | 1131 | goto bail; |
38760e24 | 1132 | } |
ccd979bd MF |
1133 | } |
1134 | ||
5b6a3a2b MF |
1135 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1136 | old_dentry->d_name.len, | |
1137 | &old_de_ino); | |
1138 | if (status) { | |
1139 | status = -ENOENT; | |
ccd979bd | 1140 | goto bail; |
5b6a3a2b | 1141 | } |
ccd979bd MF |
1142 | |
1143 | /* | |
1144 | * Check for inode number is _not_ due to possible IO errors. | |
1145 | * We might rmdir the source, keep it as pwd of some process | |
1146 | * and merrily kill the link to whatever was created under the | |
1147 | * same name. Goodbye sticky bit ;-< | |
1148 | */ | |
5b6a3a2b MF |
1149 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1150 | status = -ENOENT; | |
ccd979bd | 1151 | goto bail; |
5b6a3a2b | 1152 | } |
ccd979bd MF |
1153 | |
1154 | /* check if the target already exists (in which case we need | |
1155 | * to delete it */ | |
1156 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1157 | new_dentry->d_name.len, | |
4a12ca3a MF |
1158 | &newfe_blkno, new_dir, |
1159 | &target_lookup_res); | |
ccd979bd MF |
1160 | /* The only error we allow here is -ENOENT because the new |
1161 | * file not existing is perfectly valid. */ | |
1162 | if ((status < 0) && (status != -ENOENT)) { | |
1163 | /* If we cannot find the file specified we should just */ | |
1164 | /* return the error... */ | |
1165 | mlog_errno(status); | |
1166 | goto bail; | |
1167 | } | |
4a12ca3a MF |
1168 | if (status == 0) |
1169 | target_exists = 1; | |
ccd979bd | 1170 | |
4a12ca3a | 1171 | if (!target_exists && new_inode) { |
e325a88f SE |
1172 | /* |
1173 | * Target was unlinked by another node while we were | |
1174 | * waiting to get to ocfs2_rename(). There isn't | |
1175 | * anything we can do here to help the situation, so | |
1176 | * bubble up the appropriate error. | |
1177 | */ | |
1178 | status = -ENOENT; | |
1179 | goto bail; | |
1180 | } | |
ccd979bd MF |
1181 | |
1182 | /* In case we need to overwrite an existing file, we blow it | |
1183 | * away first */ | |
4a12ca3a | 1184 | if (target_exists) { |
ccd979bd MF |
1185 | /* VFS didn't think there existed an inode here, but |
1186 | * someone else in the cluster must have raced our | |
1187 | * rename to create one. Today we error cleanly, in | |
1188 | * the future we should consider calling iget to build | |
1189 | * a new struct inode for this entry. */ | |
1190 | if (!new_inode) { | |
1191 | status = -EACCES; | |
1192 | ||
1193 | mlog(0, "We found an inode for name %.*s but VFS " | |
1194 | "didn't give us one.\n", new_dentry->d_name.len, | |
1195 | new_dentry->d_name.name); | |
1196 | goto bail; | |
1197 | } | |
1198 | ||
1199 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1200 | status = -EACCES; | |
1201 | ||
b0697053 MF |
1202 | mlog(0, "Inode %llu and dir %llu disagree. flags = %x\n", |
1203 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, | |
1204 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1205 | OCFS2_I(new_inode)->ip_flags); |
1206 | goto bail; | |
1207 | } | |
1208 | ||
e63aecb6 | 1209 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1210 | if (status < 0) { |
1211 | if (status != -ENOENT) | |
1212 | mlog_errno(status); | |
1213 | goto bail; | |
1214 | } | |
8d5596c6 | 1215 | new_child_locked = 1; |
ccd979bd | 1216 | |
379dfe9d | 1217 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1218 | if (status < 0) { |
1219 | mlog_errno(status); | |
1220 | goto bail; | |
1221 | } | |
1222 | ||
1223 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1224 | ||
4a12ca3a MF |
1225 | mlog(0, "aha rename over existing... new_blkno=%llu " |
1226 | "newfebh=%p bhblocknr=%llu\n", | |
b0697053 | 1227 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1228 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1229 | ||
1230 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1231 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
19bd341f TM |
1232 | OCFS2_I(new_inode)->ip_blkno, |
1233 | orphan_name, &orphan_insert); | |
ccd979bd MF |
1234 | if (status < 0) { |
1235 | mlog_errno(status); | |
1236 | goto bail; | |
1237 | } | |
1238 | } | |
1239 | } else { | |
1240 | BUG_ON(new_dentry->d_parent->d_inode != new_dir); | |
1241 | ||
1242 | status = ocfs2_check_dir_for_entry(new_dir, | |
1243 | new_dentry->d_name.name, | |
1244 | new_dentry->d_name.len); | |
1245 | if (status) | |
1246 | goto bail; | |
1247 | ||
1248 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1249 | new_dentry->d_name.name, | |
1250 | new_dentry->d_name.len, | |
4a12ca3a | 1251 | &target_insert); |
ccd979bd MF |
1252 | if (status < 0) { |
1253 | mlog_errno(status); | |
1254 | goto bail; | |
1255 | } | |
1256 | } | |
1257 | ||
a90714c1 | 1258 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1259 | if (IS_ERR(handle)) { |
1260 | status = PTR_ERR(handle); | |
1261 | handle = NULL; | |
1262 | mlog_errno(status); | |
1263 | goto bail; | |
1264 | } | |
1265 | ||
4a12ca3a | 1266 | if (target_exists) { |
ccd979bd | 1267 | if (S_ISDIR(new_inode->i_mode)) { |
b80b549c MF |
1268 | if (new_inode->i_nlink != 2 || |
1269 | !ocfs2_empty_dir(new_inode)) { | |
ccd979bd MF |
1270 | status = -ENOTEMPTY; |
1271 | goto bail; | |
1272 | } | |
1273 | } | |
0cf2f763 JB |
1274 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
1275 | newfe_bh, | |
13723d00 | 1276 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1277 | if (status < 0) { |
1278 | mlog_errno(status); | |
1279 | goto bail; | |
1280 | } | |
1281 | ||
1282 | if (S_ISDIR(new_inode->i_mode) || | |
198a1ca3 | 1283 | (ocfs2_read_links_count(newfe) == 1)) { |
ccd979bd MF |
1284 | status = ocfs2_orphan_add(osb, handle, new_inode, |
1285 | newfe, orphan_name, | |
4a12ca3a | 1286 | &orphan_insert, orphan_dir); |
ccd979bd MF |
1287 | if (status < 0) { |
1288 | mlog_errno(status); | |
1289 | goto bail; | |
1290 | } | |
1291 | } | |
1292 | ||
1293 | /* change the dirent to point to the correct inode */ | |
4a12ca3a MF |
1294 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1295 | old_inode); | |
ccd979bd MF |
1296 | if (status < 0) { |
1297 | mlog_errno(status); | |
1298 | goto bail; | |
1299 | } | |
ccd979bd | 1300 | new_dir->i_version++; |
ccd979bd MF |
1301 | |
1302 | if (S_ISDIR(new_inode->i_mode)) | |
198a1ca3 | 1303 | ocfs2_set_links_count(newfe, 0); |
ccd979bd | 1304 | else |
198a1ca3 | 1305 | ocfs2_add_links_count(newfe, -1); |
ec20cec7 | 1306 | ocfs2_journal_dirty(handle, newfe_bh); |
ccd979bd MF |
1307 | } else { |
1308 | /* if the name was not found in new_dir, add it now */ | |
1309 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1310 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1311 | new_dir_bh, &target_insert); |
ccd979bd MF |
1312 | } |
1313 | ||
1314 | old_inode->i_ctime = CURRENT_TIME; | |
1315 | mark_inode_dirty(old_inode); | |
480214d7 | 1316 | |
0cf2f763 JB |
1317 | status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), |
1318 | old_inode_bh, | |
13723d00 | 1319 | OCFS2_JOURNAL_ACCESS_WRITE); |
480214d7 SM |
1320 | if (status >= 0) { |
1321 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1322 | ||
1323 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); | |
1324 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); | |
ec20cec7 | 1325 | ocfs2_journal_dirty(handle, old_inode_bh); |
480214d7 SM |
1326 | } else |
1327 | mlog_errno(status); | |
ccd979bd | 1328 | |
5b6a3a2b MF |
1329 | /* |
1330 | * Now that the name has been added to new_dir, remove the old name. | |
1331 | * | |
1332 | * We don't keep any directory entry context around until now | |
1333 | * because the insert might have changed the type of directory | |
1334 | * we're dealing with. | |
1335 | */ | |
4a12ca3a MF |
1336 | status = ocfs2_find_entry(old_dentry->d_name.name, |
1337 | old_dentry->d_name.len, old_dir, | |
1338 | &old_entry_lookup); | |
1339 | if (status) | |
5b6a3a2b | 1340 | goto bail; |
5b6a3a2b | 1341 | |
4a12ca3a | 1342 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
ccd979bd MF |
1343 | if (status < 0) { |
1344 | mlog_errno(status); | |
1345 | goto bail; | |
1346 | } | |
1347 | ||
1348 | if (new_inode) { | |
1349 | new_inode->i_nlink--; | |
1350 | new_inode->i_ctime = CURRENT_TIME; | |
1351 | } | |
1352 | old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME; | |
4a12ca3a MF |
1353 | |
1354 | if (update_dot_dot) { | |
1355 | status = ocfs2_update_entry(old_inode, handle, | |
1356 | &old_inode_dot_dot_res, new_dir); | |
ccd979bd MF |
1357 | old_dir->i_nlink--; |
1358 | if (new_inode) { | |
1359 | new_inode->i_nlink--; | |
1360 | } else { | |
d8c76e6f | 1361 | inc_nlink(new_dir); |
ccd979bd MF |
1362 | mark_inode_dirty(new_dir); |
1363 | } | |
1364 | } | |
1365 | mark_inode_dirty(old_dir); | |
592282cf MF |
1366 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1367 | if (new_inode) { | |
ccd979bd | 1368 | mark_inode_dirty(new_inode); |
592282cf MF |
1369 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1370 | } | |
ccd979bd | 1371 | |
592282cf MF |
1372 | if (old_dir != new_dir) { |
1373 | /* Keep the same times on both directories.*/ | |
1374 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; | |
1375 | ||
1376 | /* | |
1377 | * This will also pick up the i_nlink change from the | |
1378 | * block above. | |
1379 | */ | |
1380 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1381 | } | |
ccd979bd MF |
1382 | |
1383 | if (old_dir_nlink != old_dir->i_nlink) { | |
1384 | if (!old_dir_bh) { | |
1385 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1386 | "%llu from %d to %d but bh is NULL!\n", |
1387 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1388 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1389 | } else { |
1390 | struct ocfs2_dinode *fe; | |
0cf2f763 JB |
1391 | status = ocfs2_journal_access_di(handle, |
1392 | INODE_CACHE(old_dir), | |
1393 | old_dir_bh, | |
1394 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd | 1395 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
198a1ca3 | 1396 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
ec20cec7 | 1397 | ocfs2_journal_dirty(handle, old_dir_bh); |
ccd979bd MF |
1398 | } |
1399 | } | |
379dfe9d | 1400 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1401 | status = 0; |
1402 | bail: | |
1403 | if (rename_lock) | |
1404 | ocfs2_rename_unlock(osb); | |
1405 | ||
1406 | if (handle) | |
02dc1af4 | 1407 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1408 | |
8d5596c6 MF |
1409 | if (parents_locked) |
1410 | ocfs2_double_unlock(old_dir, new_dir); | |
1411 | ||
1412 | if (old_child_locked) | |
e63aecb6 | 1413 | ocfs2_inode_unlock(old_inode, 1); |
8d5596c6 MF |
1414 | |
1415 | if (new_child_locked) | |
e63aecb6 | 1416 | ocfs2_inode_unlock(new_inode, 1); |
8d5596c6 | 1417 | |
5098c27b MF |
1418 | if (orphan_dir) { |
1419 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1420 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
1421 | mutex_unlock(&orphan_dir->i_mutex); |
1422 | iput(orphan_dir); | |
1423 | } | |
1424 | ||
ccd979bd MF |
1425 | if (new_inode) |
1426 | sync_mapping_buffers(old_inode->i_mapping); | |
1427 | ||
1428 | if (new_inode) | |
1429 | iput(new_inode); | |
4a12ca3a MF |
1430 | |
1431 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1432 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1433 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1434 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1435 | ocfs2_free_dir_lookup_result(&target_insert); | |
1436 | ||
a81cb88b MF |
1437 | brelse(newfe_bh); |
1438 | brelse(old_inode_bh); | |
1439 | brelse(old_dir_bh); | |
1440 | brelse(new_dir_bh); | |
ccd979bd MF |
1441 | |
1442 | mlog_exit(status); | |
1443 | ||
1444 | return status; | |
1445 | } | |
1446 | ||
1447 | /* | |
1448 | * we expect i_size = strlen(symname). Copy symname into the file | |
1449 | * data, including the null terminator. | |
1450 | */ | |
1451 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1452 | handle_t *handle, |
ccd979bd MF |
1453 | struct inode *inode, |
1454 | const char *symname) | |
1455 | { | |
1456 | struct buffer_head **bhs = NULL; | |
1457 | const char *c; | |
1458 | struct super_block *sb = osb->sb; | |
4f902c37 | 1459 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1460 | int virtual, blocks, status, i, bytes_left; |
1461 | ||
1462 | bytes_left = i_size_read(inode) + 1; | |
1463 | /* we can't trust i_blocks because we're actually going to | |
1464 | * write i_size + 1 bytes. */ | |
1465 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1466 | ||
5515eff8 AM |
1467 | mlog_entry("i_blocks = %llu, i_size = %llu, blocks = %d\n", |
1468 | (unsigned long long)inode->i_blocks, | |
1469 | i_size_read(inode), blocks); | |
ccd979bd MF |
1470 | |
1471 | /* Sanity check -- make sure we're going to fit. */ | |
1472 | if (bytes_left > | |
1473 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1474 | status = -EIO; | |
1475 | mlog_errno(status); | |
1476 | goto bail; | |
1477 | } | |
1478 | ||
1479 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1480 | if (!bhs) { | |
1481 | status = -ENOMEM; | |
1482 | mlog_errno(status); | |
1483 | goto bail; | |
1484 | } | |
1485 | ||
49cb8d2d MF |
1486 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1487 | NULL); | |
ccd979bd MF |
1488 | if (status < 0) { |
1489 | mlog_errno(status); | |
1490 | goto bail; | |
1491 | } | |
1492 | ||
1493 | /* links can never be larger than one cluster so we know this | |
1494 | * is all going to be contiguous, but do a sanity check | |
1495 | * anyway. */ | |
1496 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1497 | status = -EIO; | |
1498 | mlog_errno(status); | |
1499 | goto bail; | |
1500 | } | |
1501 | ||
1502 | virtual = 0; | |
1503 | while(bytes_left > 0) { | |
1504 | c = &symname[virtual * sb->s_blocksize]; | |
1505 | ||
1506 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1507 | if (!bhs[virtual]) { | |
1508 | status = -ENOMEM; | |
1509 | mlog_errno(status); | |
1510 | goto bail; | |
1511 | } | |
8cb471e8 JB |
1512 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
1513 | bhs[virtual]); | |
ccd979bd | 1514 | |
0cf2f763 JB |
1515 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
1516 | bhs[virtual], | |
ccd979bd MF |
1517 | OCFS2_JOURNAL_ACCESS_CREATE); |
1518 | if (status < 0) { | |
1519 | mlog_errno(status); | |
1520 | goto bail; | |
1521 | } | |
1522 | ||
1523 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1524 | ||
1525 | memcpy(bhs[virtual]->b_data, c, | |
1526 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1527 | bytes_left); | |
1528 | ||
ec20cec7 | 1529 | ocfs2_journal_dirty(handle, bhs[virtual]); |
ccd979bd MF |
1530 | |
1531 | virtual++; | |
1532 | p_blkno++; | |
1533 | bytes_left -= sb->s_blocksize; | |
1534 | } | |
1535 | ||
1536 | status = 0; | |
1537 | bail: | |
1538 | ||
1539 | if (bhs) { | |
1540 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1541 | brelse(bhs[i]); |
ccd979bd MF |
1542 | kfree(bhs); |
1543 | } | |
1544 | ||
1545 | mlog_exit(status); | |
1546 | return status; | |
1547 | } | |
1548 | ||
1549 | static int ocfs2_symlink(struct inode *dir, | |
1550 | struct dentry *dentry, | |
1551 | const char *symname) | |
1552 | { | |
1553 | int status, l, credits; | |
1554 | u64 newsize; | |
1555 | struct ocfs2_super *osb = NULL; | |
1556 | struct inode *inode = NULL; | |
1557 | struct super_block *sb; | |
1558 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1559 | struct buffer_head *parent_fe_bh = NULL; |
1560 | struct ocfs2_dinode *fe = NULL; | |
1561 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1562 | handle_t *handle = NULL; |
ccd979bd MF |
1563 | struct ocfs2_alloc_context *inode_ac = NULL; |
1564 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1565 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1566 | int want_clusters = 0; | |
1567 | int xattr_credits = 0; | |
1568 | struct ocfs2_security_xattr_info si = { | |
1569 | .enable = 1, | |
1570 | }; | |
a90714c1 | 1571 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1572 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
1573 | |
1574 | mlog_entry("(0x%p, 0x%p, symname='%s' actual='%.*s')\n", dir, | |
1575 | dentry, symname, dentry->d_name.len, dentry->d_name.name); | |
1576 | ||
871a2931 | 1577 | dquot_initialize(dir); |
907f4554 | 1578 | |
ccd979bd MF |
1579 | sb = dir->i_sb; |
1580 | osb = OCFS2_SB(sb); | |
1581 | ||
1582 | l = strlen(symname) + 1; | |
1583 | ||
1584 | credits = ocfs2_calc_symlink_credits(sb); | |
1585 | ||
ccd979bd | 1586 | /* lock the parent directory */ |
e63aecb6 | 1587 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1588 | if (status < 0) { |
1589 | if (status != -ENOENT) | |
1590 | mlog_errno(status); | |
6d8fc40e | 1591 | return status; |
ccd979bd MF |
1592 | } |
1593 | ||
1594 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
198a1ca3 | 1595 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
1596 | /* can't make a file in a deleted directory. */ |
1597 | status = -ENOENT; | |
1598 | goto bail; | |
1599 | } | |
1600 | ||
1601 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1602 | dentry->d_name.len); | |
1603 | if (status) | |
1604 | goto bail; | |
1605 | ||
1606 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1607 | dentry->d_name.name, | |
4a12ca3a | 1608 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1609 | if (status < 0) { |
1610 | mlog_errno(status); | |
1611 | goto bail; | |
1612 | } | |
1613 | ||
da5cbf2f | 1614 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1615 | if (status < 0) { |
1616 | if (status != -ENOSPC) | |
1617 | mlog_errno(status); | |
1618 | goto bail; | |
1619 | } | |
1620 | ||
f5d36202 TY |
1621 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
1622 | if (!inode) { | |
1623 | status = -ENOMEM; | |
1624 | mlog_errno(status); | |
1625 | goto bail; | |
1626 | } | |
1627 | ||
534eaddd TY |
1628 | /* get security xattr */ |
1629 | status = ocfs2_init_security_get(inode, dir, &si); | |
1630 | if (status) { | |
1631 | if (status == -EOPNOTSUPP) | |
1632 | si.enable = 0; | |
1633 | else { | |
1634 | mlog_errno(status); | |
1635 | goto bail; | |
1636 | } | |
1637 | } | |
1638 | ||
1639 | /* calculate meta data/clusters for setting security xattr */ | |
1640 | if (si.enable) { | |
1641 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1642 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1643 | if (status < 0) { |
534eaddd | 1644 | mlog_errno(status); |
ccd979bd MF |
1645 | goto bail; |
1646 | } | |
1647 | } | |
1648 | ||
534eaddd TY |
1649 | /* don't reserve bitmap space for fast symlinks. */ |
1650 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1651 | want_clusters += 1; | |
1652 | ||
1653 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1654 | if (status < 0) { | |
1655 | if (status != -ENOSPC) | |
1656 | mlog_errno(status); | |
1657 | goto bail; | |
1658 | } | |
1659 | ||
1660 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1661 | if (IS_ERR(handle)) { |
1662 | status = PTR_ERR(handle); | |
1663 | handle = NULL; | |
1664 | mlog_errno(status); | |
1665 | goto bail; | |
1666 | } | |
1667 | ||
63936dda CH |
1668 | status = dquot_alloc_inode(inode); |
1669 | if (status) | |
a90714c1 | 1670 | goto bail; |
a90714c1 JK |
1671 | did_quota_inode = 1; |
1672 | ||
19bd341f TM |
1673 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, |
1674 | inode->i_mode, dentry->d_name.len, | |
1675 | dentry->d_name.name); | |
1676 | ||
1677 | status = ocfs2_mknod_locked(osb, dir, inode, | |
f5d36202 TY |
1678 | 0, &new_fe_bh, parent_fe_bh, handle, |
1679 | inode_ac); | |
ccd979bd MF |
1680 | if (status < 0) { |
1681 | mlog_errno(status); | |
1682 | goto bail; | |
1683 | } | |
1684 | ||
1685 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1686 | inode->i_rdev = 0; | |
1687 | newsize = l - 1; | |
1688 | if (l > ocfs2_fast_symlink_chars(sb)) { | |
dcd0538f MF |
1689 | u32 offset = 0; |
1690 | ||
ccd979bd | 1691 | inode->i_op = &ocfs2_symlink_inode_operations; |
5dd4056d CH |
1692 | status = dquot_alloc_space_nodirty(inode, |
1693 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1694 | if (status) | |
a90714c1 | 1695 | goto bail; |
a90714c1 | 1696 | did_quota = 1; |
0eb8d47e TM |
1697 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1698 | new_fe_bh, | |
1699 | handle, data_ac, NULL, | |
1700 | NULL); | |
ccd979bd MF |
1701 | if (status < 0) { |
1702 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1703 | mlog(ML_ERROR, |
1704 | "Failed to extend file to %llu\n", | |
1705 | (unsigned long long)newsize); | |
ccd979bd MF |
1706 | mlog_errno(status); |
1707 | status = -ENOSPC; | |
1708 | } | |
1709 | goto bail; | |
1710 | } | |
1711 | i_size_write(inode, newsize); | |
8110b073 | 1712 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd MF |
1713 | } else { |
1714 | inode->i_op = &ocfs2_fast_symlink_inode_operations; | |
1715 | memcpy((char *) fe->id2.i_symlink, symname, l); | |
1716 | i_size_write(inode, newsize); | |
1717 | inode->i_blocks = 0; | |
1718 | } | |
1719 | ||
1720 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1721 | if (status < 0) { | |
1722 | mlog_errno(status); | |
1723 | goto bail; | |
1724 | } | |
1725 | ||
1726 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
1727 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
1728 | symname); | |
1729 | if (status < 0) { | |
1730 | mlog_errno(status); | |
1731 | goto bail; | |
1732 | } | |
1733 | } | |
1734 | ||
534eaddd TY |
1735 | if (si.enable) { |
1736 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
1737 | xattr_ac, data_ac); | |
1738 | if (status < 0) { | |
1739 | mlog_errno(status); | |
1740 | goto bail; | |
1741 | } | |
1742 | } | |
1743 | ||
ccd979bd MF |
1744 | status = ocfs2_add_entry(handle, dentry, inode, |
1745 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
4a12ca3a | 1746 | &lookup); |
ccd979bd MF |
1747 | if (status < 0) { |
1748 | mlog_errno(status); | |
1749 | goto bail; | |
1750 | } | |
1751 | ||
0027dd5b | 1752 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
1753 | if (status) { |
1754 | mlog_errno(status); | |
1755 | goto bail; | |
1756 | } | |
1757 | ||
ccd979bd MF |
1758 | insert_inode_hash(inode); |
1759 | dentry->d_op = &ocfs2_dentry_ops; | |
1760 | d_instantiate(dentry, inode); | |
1761 | bail: | |
a90714c1 | 1762 | if (status < 0 && did_quota) |
5dd4056d | 1763 | dquot_free_space_nodirty(inode, |
a90714c1 JK |
1764 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
1765 | if (status < 0 && did_quota_inode) | |
63936dda | 1766 | dquot_free_inode(inode); |
ccd979bd | 1767 | if (handle) |
02dc1af4 | 1768 | ocfs2_commit_trans(osb, handle); |
6d8fc40e | 1769 | |
e63aecb6 | 1770 | ocfs2_inode_unlock(dir, 1); |
6d8fc40e | 1771 | |
a81cb88b MF |
1772 | brelse(new_fe_bh); |
1773 | brelse(parent_fe_bh); | |
534eaddd TY |
1774 | kfree(si.name); |
1775 | kfree(si.value); | |
4a12ca3a | 1776 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
1777 | if (inode_ac) |
1778 | ocfs2_free_alloc_context(inode_ac); | |
1779 | if (data_ac) | |
1780 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
1781 | if (xattr_ac) |
1782 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 TY |
1783 | if ((status < 0) && inode) { |
1784 | clear_nlink(inode); | |
ccd979bd | 1785 | iput(inode); |
f5d36202 | 1786 | } |
ccd979bd MF |
1787 | |
1788 | mlog_exit(status); | |
1789 | ||
1790 | return status; | |
1791 | } | |
1792 | ||
ccd979bd MF |
1793 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
1794 | { | |
1795 | int status, namelen; | |
1796 | ||
1797 | mlog_entry_void(); | |
1798 | ||
b0697053 MF |
1799 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
1800 | (long long)blkno); | |
ccd979bd MF |
1801 | if (namelen <= 0) { |
1802 | if (namelen) | |
1803 | status = namelen; | |
1804 | else | |
1805 | status = -EINVAL; | |
1806 | mlog_errno(status); | |
1807 | goto bail; | |
1808 | } | |
1809 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
1810 | status = -EINVAL; | |
1811 | mlog_errno(status); | |
1812 | goto bail; | |
1813 | } | |
1814 | ||
1815 | mlog(0, "built filename '%s' for orphan dir (len=%d)\n", name, | |
1816 | namelen); | |
1817 | ||
1818 | status = 0; | |
1819 | bail: | |
1820 | mlog_exit(status); | |
1821 | return status; | |
1822 | } | |
1823 | ||
1824 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
5098c27b | 1825 | struct inode **ret_orphan_dir, |
19bd341f | 1826 | u64 blkno, |
ccd979bd | 1827 | char *name, |
4a12ca3a | 1828 | struct ocfs2_dir_lookup_result *lookup) |
ccd979bd | 1829 | { |
5098c27b | 1830 | struct inode *orphan_dir_inode; |
ccd979bd MF |
1831 | struct buffer_head *orphan_dir_bh = NULL; |
1832 | int status = 0; | |
1833 | ||
19bd341f | 1834 | status = ocfs2_blkno_stringify(blkno, name); |
ccd979bd MF |
1835 | if (status < 0) { |
1836 | mlog_errno(status); | |
5098c27b | 1837 | return status; |
ccd979bd MF |
1838 | } |
1839 | ||
1840 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
1841 | ORPHAN_DIR_SYSTEM_INODE, | |
1842 | osb->slot_num); | |
1843 | if (!orphan_dir_inode) { | |
1844 | status = -ENOENT; | |
1845 | mlog_errno(status); | |
5098c27b | 1846 | return status; |
ccd979bd MF |
1847 | } |
1848 | ||
5098c27b MF |
1849 | mutex_lock(&orphan_dir_inode->i_mutex); |
1850 | ||
e63aecb6 | 1851 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
ccd979bd MF |
1852 | if (status < 0) { |
1853 | mlog_errno(status); | |
1854 | goto leave; | |
1855 | } | |
1856 | ||
1857 | status = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
1858 | orphan_dir_bh, name, | |
4a12ca3a | 1859 | OCFS2_ORPHAN_NAMELEN, lookup); |
ccd979bd | 1860 | if (status < 0) { |
e63aecb6 | 1861 | ocfs2_inode_unlock(orphan_dir_inode, 1); |
5098c27b | 1862 | |
ccd979bd MF |
1863 | mlog_errno(status); |
1864 | goto leave; | |
1865 | } | |
1866 | ||
5098c27b MF |
1867 | *ret_orphan_dir = orphan_dir_inode; |
1868 | ||
ccd979bd | 1869 | leave: |
5098c27b MF |
1870 | if (status) { |
1871 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
ccd979bd | 1872 | iput(orphan_dir_inode); |
5098c27b | 1873 | } |
ccd979bd | 1874 | |
a81cb88b | 1875 | brelse(orphan_dir_bh); |
ccd979bd MF |
1876 | |
1877 | mlog_exit(status); | |
1878 | return status; | |
1879 | } | |
1880 | ||
1881 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 1882 | handle_t *handle, |
ccd979bd MF |
1883 | struct inode *inode, |
1884 | struct ocfs2_dinode *fe, | |
1885 | char *name, | |
4a12ca3a | 1886 | struct ocfs2_dir_lookup_result *lookup, |
5098c27b | 1887 | struct inode *orphan_dir_inode) |
ccd979bd | 1888 | { |
ccd979bd MF |
1889 | struct buffer_head *orphan_dir_bh = NULL; |
1890 | int status = 0; | |
1891 | struct ocfs2_dinode *orphan_fe; | |
1892 | ||
1893 | mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino); | |
1894 | ||
b657c95c | 1895 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
1896 | if (status < 0) { |
1897 | mlog_errno(status); | |
1898 | goto leave; | |
1899 | } | |
1900 | ||
0cf2f763 JB |
1901 | status = ocfs2_journal_access_di(handle, |
1902 | INODE_CACHE(orphan_dir_inode), | |
1903 | orphan_dir_bh, | |
13723d00 | 1904 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1905 | if (status < 0) { |
1906 | mlog_errno(status); | |
1907 | goto leave; | |
1908 | } | |
1909 | ||
1910 | /* we're a cluster, and nlink can change on disk from | |
1911 | * underneath us... */ | |
1912 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
1913 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 MF |
1914 | ocfs2_add_links_count(orphan_fe, 1); |
1915 | orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe); | |
ec20cec7 | 1916 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
1917 | |
1918 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
1919 | OCFS2_ORPHAN_NAMELEN, inode, | |
1920 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 1921 | orphan_dir_bh, lookup); |
ccd979bd MF |
1922 | if (status < 0) { |
1923 | mlog_errno(status); | |
1924 | goto leave; | |
1925 | } | |
1926 | ||
1927 | le32_add_cpu(&fe->i_flags, OCFS2_ORPHANED_FL); | |
1928 | ||
1929 | /* Record which orphan dir our inode now resides | |
1930 | * in. delete_inode will use this to determine which orphan | |
1931 | * dir to lock. */ | |
50008630 | 1932 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); |
ccd979bd | 1933 | |
b0697053 MF |
1934 | mlog(0, "Inode %llu orphaned in slot %d\n", |
1935 | (unsigned long long)OCFS2_I(inode)->ip_blkno, osb->slot_num); | |
ccd979bd MF |
1936 | |
1937 | leave: | |
a81cb88b | 1938 | brelse(orphan_dir_bh); |
ccd979bd MF |
1939 | |
1940 | mlog_exit(status); | |
1941 | return status; | |
1942 | } | |
1943 | ||
1944 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
1945 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 1946 | handle_t *handle, |
ccd979bd MF |
1947 | struct inode *orphan_dir_inode, |
1948 | struct inode *inode, | |
1949 | struct buffer_head *orphan_dir_bh) | |
1950 | { | |
1951 | char name[OCFS2_ORPHAN_NAMELEN + 1]; | |
1952 | struct ocfs2_dinode *orphan_fe; | |
1953 | int status = 0; | |
4a12ca3a | 1954 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
1955 | |
1956 | mlog_entry_void(); | |
1957 | ||
1958 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
1959 | if (status < 0) { | |
1960 | mlog_errno(status); | |
1961 | goto leave; | |
1962 | } | |
1963 | ||
b0697053 MF |
1964 | mlog(0, "removing '%s' from orphan dir %llu (namelen=%d)\n", |
1965 | name, (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
1966 | OCFS2_ORPHAN_NAMELEN); | |
ccd979bd MF |
1967 | |
1968 | /* find it's spot in the orphan directory */ | |
4a12ca3a MF |
1969 | status = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, orphan_dir_inode, |
1970 | &lookup); | |
1971 | if (status) { | |
ccd979bd MF |
1972 | mlog_errno(status); |
1973 | goto leave; | |
1974 | } | |
1975 | ||
1976 | /* remove it from the orphan directory */ | |
4a12ca3a | 1977 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
1978 | if (status < 0) { |
1979 | mlog_errno(status); | |
1980 | goto leave; | |
1981 | } | |
1982 | ||
0cf2f763 JB |
1983 | status = ocfs2_journal_access_di(handle, |
1984 | INODE_CACHE(orphan_dir_inode), | |
1985 | orphan_dir_bh, | |
13723d00 | 1986 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1987 | if (status < 0) { |
1988 | mlog_errno(status); | |
1989 | goto leave; | |
1990 | } | |
1991 | ||
1992 | /* do the i_nlink dance! :) */ | |
1993 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
1994 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 MF |
1995 | ocfs2_add_links_count(orphan_fe, -1); |
1996 | orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe); | |
ec20cec7 | 1997 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
1998 | |
1999 | leave: | |
4a12ca3a | 2000 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
2001 | |
2002 | mlog_exit(status); | |
2003 | return status; | |
2004 | } | |
2005 | ||
bc13d347 TM |
2006 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
2007 | int mode, | |
2008 | struct inode **new_inode) | |
2009 | { | |
2010 | int status, did_quota_inode = 0; | |
2011 | struct inode *inode = NULL; | |
2012 | struct inode *orphan_dir = NULL; | |
2013 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2014 | struct ocfs2_dinode *di = NULL; | |
2015 | handle_t *handle = NULL; | |
2016 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2017 | struct buffer_head *parent_di_bh = NULL; | |
2018 | struct buffer_head *new_di_bh = NULL; | |
2019 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2020 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
2021 | ||
2022 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2023 | if (status < 0) { | |
2024 | if (status != -ENOENT) | |
2025 | mlog_errno(status); | |
2026 | return status; | |
2027 | } | |
2028 | ||
2029 | /* | |
2030 | * We give the orphan dir the root blkno to fake an orphan name, | |
2031 | * and allocate enough space for our insertion. | |
2032 | */ | |
2033 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, | |
2034 | osb->root_blkno, | |
2035 | orphan_name, &orphan_insert); | |
2036 | if (status < 0) { | |
2037 | mlog_errno(status); | |
2038 | goto leave; | |
2039 | } | |
2040 | ||
2041 | /* reserve an inode spot */ | |
2042 | status = ocfs2_reserve_new_inode(osb, &inode_ac); | |
2043 | if (status < 0) { | |
2044 | if (status != -ENOSPC) | |
2045 | mlog_errno(status); | |
2046 | goto leave; | |
2047 | } | |
2048 | ||
2049 | inode = ocfs2_get_init_inode(dir, mode); | |
2050 | if (!inode) { | |
2051 | status = -ENOMEM; | |
2052 | mlog_errno(status); | |
2053 | goto leave; | |
2054 | } | |
2055 | ||
2056 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); | |
2057 | if (IS_ERR(handle)) { | |
2058 | status = PTR_ERR(handle); | |
2059 | handle = NULL; | |
2060 | mlog_errno(status); | |
2061 | goto leave; | |
2062 | } | |
2063 | ||
63936dda CH |
2064 | status = dquot_alloc_inode(inode); |
2065 | if (status) | |
bc13d347 | 2066 | goto leave; |
bc13d347 TM |
2067 | did_quota_inode = 1; |
2068 | ||
10cf1a02 | 2069 | inode->i_nlink = 0; |
bc13d347 TM |
2070 | /* do the real work now. */ |
2071 | status = ocfs2_mknod_locked(osb, dir, inode, | |
2072 | 0, &new_di_bh, parent_di_bh, handle, | |
2073 | inode_ac); | |
2074 | if (status < 0) { | |
2075 | mlog_errno(status); | |
2076 | goto leave; | |
2077 | } | |
2078 | ||
2079 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, orphan_name); | |
2080 | if (status < 0) { | |
2081 | mlog_errno(status); | |
2082 | goto leave; | |
2083 | } | |
2084 | ||
2085 | di = (struct ocfs2_dinode *)new_di_bh->b_data; | |
2086 | status = ocfs2_orphan_add(osb, handle, inode, di, orphan_name, | |
2087 | &orphan_insert, orphan_dir); | |
2088 | if (status < 0) { | |
2089 | mlog_errno(status); | |
2090 | goto leave; | |
2091 | } | |
2092 | ||
2093 | /* get open lock so that only nodes can't remove it from orphan dir. */ | |
2094 | status = ocfs2_open_lock(inode); | |
2095 | if (status < 0) | |
2096 | mlog_errno(status); | |
2097 | ||
c7d260af | 2098 | insert_inode_hash(inode); |
bc13d347 TM |
2099 | leave: |
2100 | if (status < 0 && did_quota_inode) | |
63936dda | 2101 | dquot_free_inode(inode); |
bc13d347 TM |
2102 | if (handle) |
2103 | ocfs2_commit_trans(osb, handle); | |
2104 | ||
2105 | if (orphan_dir) { | |
2106 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
2107 | ocfs2_inode_unlock(orphan_dir, 1); | |
2108 | mutex_unlock(&orphan_dir->i_mutex); | |
2109 | iput(orphan_dir); | |
2110 | } | |
2111 | ||
2112 | if (status == -ENOSPC) | |
2113 | mlog(0, "Disk is full\n"); | |
2114 | ||
2115 | if ((status < 0) && inode) { | |
2116 | clear_nlink(inode); | |
2117 | iput(inode); | |
2118 | } | |
2119 | ||
2120 | if (inode_ac) | |
2121 | ocfs2_free_alloc_context(inode_ac); | |
2122 | ||
2123 | brelse(new_di_bh); | |
2124 | ||
2125 | if (!status) | |
2126 | *new_inode = inode; | |
2127 | ||
2128 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2129 | ||
2130 | ocfs2_inode_unlock(dir, 1); | |
2131 | brelse(parent_di_bh); | |
2132 | return status; | |
2133 | } | |
2134 | ||
2135 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, | |
2136 | struct inode *inode, | |
2137 | struct dentry *dentry) | |
2138 | { | |
2139 | int status = 0; | |
2140 | struct buffer_head *parent_di_bh = NULL; | |
2141 | handle_t *handle = NULL; | |
2142 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2143 | struct ocfs2_dinode *dir_di, *di; | |
2144 | struct inode *orphan_dir_inode = NULL; | |
2145 | struct buffer_head *orphan_dir_bh = NULL; | |
2146 | struct buffer_head *di_bh = NULL; | |
2147 | struct ocfs2_dir_lookup_result lookup = { NULL, }; | |
2148 | ||
2149 | mlog_entry("(0x%p, 0x%p, %.*s')\n", dir, dentry, | |
2150 | dentry->d_name.len, dentry->d_name.name); | |
2151 | ||
2152 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2153 | if (status < 0) { | |
2154 | if (status != -ENOENT) | |
2155 | mlog_errno(status); | |
2156 | return status; | |
2157 | } | |
2158 | ||
2159 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; | |
2160 | if (!dir_di->i_links_count) { | |
2161 | /* can't make a file in a deleted directory. */ | |
2162 | status = -ENOENT; | |
2163 | goto leave; | |
2164 | } | |
2165 | ||
2166 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
2167 | dentry->d_name.len); | |
2168 | if (status) | |
2169 | goto leave; | |
2170 | ||
2171 | /* get a spot inside the dir. */ | |
2172 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, | |
2173 | dentry->d_name.name, | |
2174 | dentry->d_name.len, &lookup); | |
2175 | if (status < 0) { | |
2176 | mlog_errno(status); | |
2177 | goto leave; | |
2178 | } | |
2179 | ||
2180 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2181 | ORPHAN_DIR_SYSTEM_INODE, | |
2182 | osb->slot_num); | |
2183 | if (!orphan_dir_inode) { | |
2184 | status = -EEXIST; | |
2185 | mlog_errno(status); | |
2186 | goto leave; | |
2187 | } | |
2188 | ||
2189 | mutex_lock(&orphan_dir_inode->i_mutex); | |
2190 | ||
2191 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2192 | if (status < 0) { | |
2193 | mlog_errno(status); | |
2194 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2195 | iput(orphan_dir_inode); | |
2196 | goto leave; | |
2197 | } | |
2198 | ||
2199 | status = ocfs2_read_inode_block(inode, &di_bh); | |
2200 | if (status < 0) { | |
2201 | mlog_errno(status); | |
2202 | goto orphan_unlock; | |
2203 | } | |
2204 | ||
2205 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); | |
2206 | if (IS_ERR(handle)) { | |
2207 | status = PTR_ERR(handle); | |
2208 | handle = NULL; | |
2209 | mlog_errno(status); | |
2210 | goto orphan_unlock; | |
2211 | } | |
2212 | ||
2213 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), | |
2214 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2215 | if (status < 0) { | |
2216 | mlog_errno(status); | |
2217 | goto out_commit; | |
2218 | } | |
2219 | ||
2220 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
2221 | orphan_dir_bh); | |
2222 | if (status < 0) { | |
2223 | mlog_errno(status); | |
2224 | goto out_commit; | |
2225 | } | |
2226 | ||
2227 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
2228 | le32_add_cpu(&di->i_flags, -OCFS2_ORPHANED_FL); | |
2229 | di->i_orphaned_slot = 0; | |
10cf1a02 TM |
2230 | inode->i_nlink = 1; |
2231 | ocfs2_set_links_count(di, inode->i_nlink); | |
bc13d347 TM |
2232 | ocfs2_journal_dirty(handle, di_bh); |
2233 | ||
2234 | status = ocfs2_add_entry(handle, dentry, inode, | |
2235 | OCFS2_I(inode)->ip_blkno, parent_di_bh, | |
2236 | &lookup); | |
2237 | if (status < 0) { | |
2238 | mlog_errno(status); | |
2239 | goto out_commit; | |
2240 | } | |
2241 | ||
2242 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
2243 | OCFS2_I(dir)->ip_blkno); | |
2244 | if (status) { | |
2245 | mlog_errno(status); | |
2246 | goto out_commit; | |
2247 | } | |
2248 | ||
bc13d347 TM |
2249 | dentry->d_op = &ocfs2_dentry_ops; |
2250 | d_instantiate(dentry, inode); | |
2251 | status = 0; | |
2252 | out_commit: | |
2253 | ocfs2_commit_trans(osb, handle); | |
2254 | orphan_unlock: | |
2255 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
2256 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2257 | iput(orphan_dir_inode); | |
2258 | leave: | |
2259 | ||
2260 | ocfs2_inode_unlock(dir, 1); | |
2261 | ||
2262 | brelse(di_bh); | |
2263 | brelse(parent_di_bh); | |
2264 | brelse(orphan_dir_bh); | |
2265 | ||
2266 | ocfs2_free_dir_lookup_result(&lookup); | |
2267 | ||
2268 | mlog_exit(status); | |
2269 | ||
2270 | return status; | |
2271 | } | |
2272 | ||
92e1d5be | 2273 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2274 | .create = ocfs2_create, |
2275 | .lookup = ocfs2_lookup, | |
2276 | .link = ocfs2_link, | |
2277 | .unlink = ocfs2_unlink, | |
2278 | .rmdir = ocfs2_unlink, | |
2279 | .symlink = ocfs2_symlink, | |
2280 | .mkdir = ocfs2_mkdir, | |
2281 | .mknod = ocfs2_mknod, | |
2282 | .rename = ocfs2_rename, | |
2283 | .setattr = ocfs2_setattr, | |
2284 | .getattr = ocfs2_getattr, | |
d38eb8db | 2285 | .permission = ocfs2_permission, |
cf1d6c76 TY |
2286 | .setxattr = generic_setxattr, |
2287 | .getxattr = generic_getxattr, | |
2288 | .listxattr = ocfs2_listxattr, | |
2289 | .removexattr = generic_removexattr, | |
55f4946e | 2290 | .fiemap = ocfs2_fiemap, |
ccd979bd | 2291 | }; |