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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 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; | |
a90714c1 | 215 | vfs_dq_init(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 | ||
247 | /* get our super block */ | |
248 | osb = OCFS2_SB(dir->i_sb); | |
249 | ||
e63aecb6 | 250 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
e3a82138 MF |
251 | if (status < 0) { |
252 | if (status != -ENOENT) | |
253 | mlog_errno(status); | |
254 | return status; | |
255 | } | |
256 | ||
198a1ca3 | 257 | if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) { |
a663e305 MF |
258 | status = -EMLINK; |
259 | goto leave; | |
260 | } | |
261 | ||
ccd979bd | 262 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
198a1ca3 | 263 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
264 | /* can't make a file in a deleted directory. */ |
265 | status = -ENOENT; | |
266 | goto leave; | |
267 | } | |
268 | ||
269 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
270 | dentry->d_name.len); | |
271 | if (status) | |
272 | goto leave; | |
273 | ||
274 | /* get a spot inside the dir. */ | |
275 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
276 | dentry->d_name.name, | |
4a12ca3a | 277 | dentry->d_name.len, &lookup); |
ccd979bd MF |
278 | if (status < 0) { |
279 | mlog_errno(status); | |
280 | goto leave; | |
281 | } | |
282 | ||
283 | /* reserve an inode spot */ | |
da5cbf2f | 284 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
285 | if (status < 0) { |
286 | if (status != -ENOSPC) | |
287 | mlog_errno(status); | |
288 | goto leave; | |
289 | } | |
290 | ||
f5d36202 TY |
291 | inode = ocfs2_get_init_inode(dir, mode); |
292 | if (!inode) { | |
293 | status = -ENOMEM; | |
294 | mlog_errno(status); | |
295 | goto leave; | |
296 | } | |
297 | ||
534eaddd TY |
298 | /* get security xattr */ |
299 | status = ocfs2_init_security_get(inode, dir, &si); | |
300 | if (status) { | |
301 | if (status == -EOPNOTSUPP) | |
302 | si.enable = 0; | |
303 | else { | |
304 | mlog_errno(status); | |
305 | goto leave; | |
306 | } | |
307 | } | |
308 | ||
89c38bd0 TY |
309 | /* calculate meta data/clusters for setting security and acl xattr */ |
310 | status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode, | |
9b7895ef MF |
311 | &si, &want_clusters, |
312 | &xattr_credits, &want_meta); | |
89c38bd0 TY |
313 | if (status < 0) { |
314 | mlog_errno(status); | |
315 | goto leave; | |
ccd979bd MF |
316 | } |
317 | ||
534eaddd | 318 | /* Reserve a cluster if creating an extent based directory. */ |
9b7895ef | 319 | if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) { |
534eaddd TY |
320 | want_clusters += 1; |
321 | ||
9b7895ef | 322 | /* Dir indexing requires extra space as well */ |
4ed8a6bb | 323 | if (ocfs2_supports_indexed_dirs(osb)) |
9b7895ef | 324 | want_meta++; |
9b7895ef MF |
325 | } |
326 | ||
327 | status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac); | |
328 | if (status < 0) { | |
329 | if (status != -ENOSPC) | |
330 | mlog_errno(status); | |
331 | goto leave; | |
332 | } | |
333 | ||
534eaddd TY |
334 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); |
335 | if (status < 0) { | |
336 | if (status != -ENOSPC) | |
337 | mlog_errno(status); | |
338 | goto leave; | |
339 | } | |
340 | ||
9b7895ef MF |
341 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, |
342 | S_ISDIR(mode), | |
343 | xattr_credits)); | |
ccd979bd MF |
344 | if (IS_ERR(handle)) { |
345 | status = PTR_ERR(handle); | |
346 | handle = NULL; | |
347 | mlog_errno(status); | |
348 | goto leave; | |
349 | } | |
350 | ||
a90714c1 JK |
351 | /* We don't use standard VFS wrapper because we don't want vfs_dq_init |
352 | * to be called. */ | |
353 | if (sb_any_quota_active(osb->sb) && | |
354 | osb->sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA) { | |
355 | status = -EDQUOT; | |
356 | goto leave; | |
357 | } | |
358 | did_quota_inode = 1; | |
359 | ||
19bd341f TM |
360 | mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, |
361 | inode->i_mode, (unsigned long)dev, dentry->d_name.len, | |
362 | dentry->d_name.name); | |
363 | ||
ccd979bd | 364 | /* do the real work now. */ |
19bd341f | 365 | status = ocfs2_mknod_locked(osb, dir, inode, dev, |
ccd979bd | 366 | &new_fe_bh, parent_fe_bh, handle, |
f5d36202 | 367 | inode_ac); |
ccd979bd MF |
368 | if (status < 0) { |
369 | mlog_errno(status); | |
370 | goto leave; | |
371 | } | |
372 | ||
373 | if (S_ISDIR(mode)) { | |
374 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, | |
9b7895ef | 375 | new_fe_bh, data_ac, meta_ac); |
ccd979bd MF |
376 | if (status < 0) { |
377 | mlog_errno(status); | |
378 | goto leave; | |
379 | } | |
380 | ||
0cf2f763 JB |
381 | status = ocfs2_journal_access_di(handle, INODE_CACHE(dir), |
382 | parent_fe_bh, | |
13723d00 | 383 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
384 | if (status < 0) { |
385 | mlog_errno(status); | |
386 | goto leave; | |
387 | } | |
198a1ca3 | 388 | ocfs2_add_links_count(dirfe, 1); |
ccd979bd MF |
389 | status = ocfs2_journal_dirty(handle, parent_fe_bh); |
390 | if (status < 0) { | |
391 | mlog_errno(status); | |
392 | goto leave; | |
393 | } | |
d8c76e6f | 394 | inc_nlink(dir); |
ccd979bd MF |
395 | } |
396 | ||
89c38bd0 | 397 | status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh, |
9b7895ef | 398 | meta_ac, data_ac); |
89c38bd0 TY |
399 | if (status < 0) { |
400 | mlog_errno(status); | |
401 | goto leave; | |
402 | } | |
403 | ||
534eaddd TY |
404 | if (si.enable) { |
405 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
9b7895ef | 406 | meta_ac, data_ac); |
534eaddd TY |
407 | if (status < 0) { |
408 | mlog_errno(status); | |
409 | goto leave; | |
410 | } | |
411 | } | |
412 | ||
ccd979bd MF |
413 | status = ocfs2_add_entry(handle, dentry, inode, |
414 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
4a12ca3a | 415 | &lookup); |
ccd979bd MF |
416 | if (status < 0) { |
417 | mlog_errno(status); | |
418 | goto leave; | |
419 | } | |
420 | ||
379dfe9d | 421 | status = ocfs2_dentry_attach_lock(dentry, inode, |
0027dd5b | 422 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
423 | if (status) { |
424 | mlog_errno(status); | |
425 | goto leave; | |
426 | } | |
427 | ||
ccd979bd MF |
428 | insert_inode_hash(inode); |
429 | dentry->d_op = &ocfs2_dentry_ops; | |
430 | d_instantiate(dentry, inode); | |
431 | status = 0; | |
432 | leave: | |
a90714c1 JK |
433 | if (status < 0 && did_quota_inode) |
434 | vfs_dq_free_inode(inode); | |
ccd979bd | 435 | if (handle) |
02dc1af4 | 436 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 437 | |
e63aecb6 | 438 | ocfs2_inode_unlock(dir, 1); |
e3a82138 | 439 | |
ccd979bd MF |
440 | if (status == -ENOSPC) |
441 | mlog(0, "Disk is full\n"); | |
442 | ||
a81cb88b | 443 | brelse(new_fe_bh); |
a81cb88b | 444 | brelse(parent_fe_bh); |
534eaddd TY |
445 | kfree(si.name); |
446 | kfree(si.value); | |
ccd979bd | 447 | |
4a12ca3a MF |
448 | ocfs2_free_dir_lookup_result(&lookup); |
449 | ||
f5d36202 TY |
450 | if ((status < 0) && inode) { |
451 | clear_nlink(inode); | |
ccd979bd | 452 | iput(inode); |
f5d36202 | 453 | } |
ccd979bd MF |
454 | |
455 | if (inode_ac) | |
456 | ocfs2_free_alloc_context(inode_ac); | |
457 | ||
458 | if (data_ac) | |
459 | ocfs2_free_alloc_context(data_ac); | |
460 | ||
9b7895ef MF |
461 | if (meta_ac) |
462 | ocfs2_free_alloc_context(meta_ac); | |
534eaddd | 463 | |
ccd979bd MF |
464 | mlog_exit(status); |
465 | ||
466 | return status; | |
467 | } | |
468 | ||
469 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, | |
470 | struct inode *dir, | |
f5d36202 | 471 | struct inode *inode, |
ccd979bd MF |
472 | dev_t dev, |
473 | struct buffer_head **new_fe_bh, | |
474 | struct buffer_head *parent_fe_bh, | |
1fabe148 | 475 | handle_t *handle, |
ccd979bd MF |
476 | struct ocfs2_alloc_context *inode_ac) |
477 | { | |
478 | int status = 0; | |
479 | struct ocfs2_dinode *fe = NULL; | |
480 | struct ocfs2_extent_list *fel; | |
481 | u64 fe_blkno = 0; | |
482 | u16 suballoc_bit; | |
9b7895ef | 483 | u16 feat; |
ccd979bd | 484 | |
ccd979bd | 485 | *new_fe_bh = NULL; |
ccd979bd | 486 | |
13821151 TM |
487 | status = ocfs2_claim_new_inode(osb, handle, dir, parent_fe_bh, |
488 | inode_ac, &suballoc_bit, &fe_blkno); | |
ccd979bd MF |
489 | if (status < 0) { |
490 | mlog_errno(status); | |
491 | goto leave; | |
492 | } | |
493 | ||
ccd979bd MF |
494 | /* populate as many fields early on as possible - many of |
495 | * these are used by the support functions here and in | |
496 | * callers. */ | |
497 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
498 | OCFS2_I(inode)->ip_blkno = fe_blkno; | |
ccd979bd MF |
499 | spin_lock(&osb->osb_lock); |
500 | inode->i_generation = osb->s_next_generation++; | |
501 | spin_unlock(&osb->osb_lock); | |
502 | ||
503 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
504 | if (!*new_fe_bh) { | |
505 | status = -EIO; | |
506 | mlog_errno(status); | |
507 | goto leave; | |
508 | } | |
8cb471e8 | 509 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
ccd979bd | 510 | |
0cf2f763 JB |
511 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
512 | *new_fe_bh, | |
13723d00 | 513 | OCFS2_JOURNAL_ACCESS_CREATE); |
ccd979bd MF |
514 | if (status < 0) { |
515 | mlog_errno(status); | |
516 | goto leave; | |
517 | } | |
518 | ||
519 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
520 | memset(fe, 0, osb->sb->s_blocksize); | |
521 | ||
522 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
523 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
524 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
525 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); | |
4d0ddb2c | 526 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
f5d36202 TY |
527 | fe->i_uid = cpu_to_le32(inode->i_uid); |
528 | fe->i_gid = cpu_to_le32(inode->i_gid); | |
529 | fe->i_mode = cpu_to_le16(inode->i_mode); | |
530 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 531 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
198a1ca3 MF |
532 | |
533 | ocfs2_set_links_count(fe, inode->i_nlink); | |
ccd979bd MF |
534 | |
535 | fe->i_last_eb_blk = 0; | |
536 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
537 | le32_add_cpu(&fe->i_flags, OCFS2_VALID_FL); | |
538 | fe->i_atime = fe->i_ctime = fe->i_mtime = | |
539 | cpu_to_le64(CURRENT_TIME.tv_sec); | |
540 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = | |
541 | cpu_to_le32(CURRENT_TIME.tv_nsec); | |
542 | fe->i_dtime = 0; | |
543 | ||
5b6a3a2b | 544 | /* |
9b7895ef MF |
545 | * If supported, directories start with inline data. If inline |
546 | * isn't supported, but indexing is, we start them as indexed. | |
5b6a3a2b | 547 | */ |
9b7895ef | 548 | feat = le16_to_cpu(fe->i_dyn_features); |
f5d36202 | 549 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
550 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
551 | ||
d9ae49d6 TY |
552 | fe->id2.i_data.id_count = cpu_to_le16( |
553 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); | |
5b6a3a2b MF |
554 | } else { |
555 | fel = &fe->id2.i_list; | |
556 | fel->l_tree_depth = 0; | |
557 | fel->l_next_free_rec = 0; | |
558 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
559 | } | |
ccd979bd MF |
560 | |
561 | status = ocfs2_journal_dirty(handle, *new_fe_bh); | |
562 | if (status < 0) { | |
563 | mlog_errno(status); | |
564 | goto leave; | |
565 | } | |
566 | ||
b657c95c | 567 | ocfs2_populate_inode(inode, fe, 1); |
0cf2f763 | 568 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
c271c5c2 SM |
569 | if (!ocfs2_mount_local(osb)) { |
570 | status = ocfs2_create_new_inode_locks(inode); | |
571 | if (status < 0) | |
572 | mlog_errno(status); | |
573 | } | |
ccd979bd MF |
574 | |
575 | status = 0; /* error in ocfs2_create_new_inode_locks is not | |
576 | * critical */ | |
577 | ||
ccd979bd MF |
578 | leave: |
579 | if (status < 0) { | |
580 | if (*new_fe_bh) { | |
581 | brelse(*new_fe_bh); | |
582 | *new_fe_bh = NULL; | |
583 | } | |
ccd979bd MF |
584 | } |
585 | ||
586 | mlog_exit(status); | |
587 | return status; | |
588 | } | |
589 | ||
590 | static int ocfs2_mkdir(struct inode *dir, | |
591 | struct dentry *dentry, | |
592 | int mode) | |
593 | { | |
594 | int ret; | |
595 | ||
596 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, | |
597 | dentry->d_name.len, dentry->d_name.name); | |
598 | ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0); | |
599 | mlog_exit(ret); | |
600 | ||
601 | return ret; | |
602 | } | |
603 | ||
604 | static int ocfs2_create(struct inode *dir, | |
605 | struct dentry *dentry, | |
606 | int mode, | |
607 | struct nameidata *nd) | |
608 | { | |
609 | int ret; | |
610 | ||
611 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, | |
612 | dentry->d_name.len, dentry->d_name.name); | |
613 | ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0); | |
614 | mlog_exit(ret); | |
615 | ||
616 | return ret; | |
617 | } | |
618 | ||
619 | static int ocfs2_link(struct dentry *old_dentry, | |
620 | struct inode *dir, | |
621 | struct dentry *dentry) | |
622 | { | |
1fabe148 | 623 | handle_t *handle; |
ccd979bd MF |
624 | struct inode *inode = old_dentry->d_inode; |
625 | int err; | |
626 | struct buffer_head *fe_bh = NULL; | |
627 | struct buffer_head *parent_fe_bh = NULL; | |
ccd979bd MF |
628 | struct ocfs2_dinode *fe = NULL; |
629 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
4a12ca3a | 630 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
631 | |
632 | mlog_entry("(inode=%lu, old='%.*s' new='%.*s')\n", inode->i_ino, | |
633 | old_dentry->d_name.len, old_dentry->d_name.name, | |
634 | dentry->d_name.len, dentry->d_name.name); | |
635 | ||
123a9643 MF |
636 | if (S_ISDIR(inode->i_mode)) |
637 | return -EPERM; | |
ccd979bd | 638 | |
cb25797d | 639 | err = ocfs2_inode_lock_nested(dir, &parent_fe_bh, 1, OI_LS_PARENT); |
ccd979bd MF |
640 | if (err < 0) { |
641 | if (err != -ENOENT) | |
642 | mlog_errno(err); | |
123a9643 | 643 | return err; |
ccd979bd MF |
644 | } |
645 | ||
0f62de2c TY |
646 | if (!dir->i_nlink) { |
647 | err = -ENOENT; | |
123a9643 | 648 | goto out; |
0f62de2c TY |
649 | } |
650 | ||
ccd979bd MF |
651 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
652 | dentry->d_name.len); | |
653 | if (err) | |
123a9643 | 654 | goto out; |
ccd979bd MF |
655 | |
656 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
657 | dentry->d_name.name, | |
4a12ca3a | 658 | dentry->d_name.len, &lookup); |
ccd979bd MF |
659 | if (err < 0) { |
660 | mlog_errno(err); | |
123a9643 | 661 | goto out; |
ccd979bd MF |
662 | } |
663 | ||
e63aecb6 | 664 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
665 | if (err < 0) { |
666 | if (err != -ENOENT) | |
667 | mlog_errno(err); | |
123a9643 | 668 | goto out; |
ccd979bd MF |
669 | } |
670 | ||
671 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
198a1ca3 | 672 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
ccd979bd | 673 | err = -EMLINK; |
123a9643 | 674 | goto out_unlock_inode; |
ccd979bd MF |
675 | } |
676 | ||
a90714c1 | 677 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
678 | if (IS_ERR(handle)) { |
679 | err = PTR_ERR(handle); | |
680 | handle = NULL; | |
681 | mlog_errno(err); | |
123a9643 | 682 | goto out_unlock_inode; |
ccd979bd MF |
683 | } |
684 | ||
0cf2f763 | 685 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 686 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
687 | if (err < 0) { |
688 | mlog_errno(err); | |
123a9643 | 689 | goto out_commit; |
ccd979bd MF |
690 | } |
691 | ||
d8c76e6f | 692 | inc_nlink(inode); |
ccd979bd | 693 | inode->i_ctime = CURRENT_TIME; |
198a1ca3 | 694 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
695 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
696 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
697 | ||
698 | err = ocfs2_journal_dirty(handle, fe_bh); | |
699 | if (err < 0) { | |
198a1ca3 | 700 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 701 | drop_nlink(inode); |
ccd979bd | 702 | mlog_errno(err); |
123a9643 | 703 | goto out_commit; |
ccd979bd MF |
704 | } |
705 | ||
706 | err = ocfs2_add_entry(handle, dentry, inode, | |
707 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 708 | parent_fe_bh, &lookup); |
ccd979bd | 709 | if (err) { |
198a1ca3 | 710 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 711 | drop_nlink(inode); |
ccd979bd | 712 | mlog_errno(err); |
123a9643 | 713 | goto out_commit; |
ccd979bd MF |
714 | } |
715 | ||
0027dd5b | 716 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
717 | if (err) { |
718 | mlog_errno(err); | |
123a9643 | 719 | goto out_commit; |
379dfe9d MF |
720 | } |
721 | ||
ccd979bd MF |
722 | atomic_inc(&inode->i_count); |
723 | dentry->d_op = &ocfs2_dentry_ops; | |
724 | d_instantiate(dentry, inode); | |
123a9643 MF |
725 | |
726 | out_commit: | |
02dc1af4 | 727 | ocfs2_commit_trans(osb, handle); |
123a9643 | 728 | out_unlock_inode: |
e63aecb6 | 729 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
730 | |
731 | out: | |
e63aecb6 | 732 | ocfs2_inode_unlock(dir, 1); |
123a9643 | 733 | |
a81cb88b MF |
734 | brelse(fe_bh); |
735 | brelse(parent_fe_bh); | |
ccd979bd | 736 | |
4a12ca3a MF |
737 | ocfs2_free_dir_lookup_result(&lookup); |
738 | ||
ccd979bd MF |
739 | mlog_exit(err); |
740 | ||
741 | return err; | |
742 | } | |
743 | ||
379dfe9d MF |
744 | /* |
745 | * Takes and drops an exclusive lock on the given dentry. This will | |
746 | * force other nodes to drop it. | |
747 | */ | |
748 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
749 | { | |
750 | int ret; | |
751 | ||
752 | ret = ocfs2_dentry_lock(dentry, 1); | |
753 | if (ret) | |
754 | mlog_errno(ret); | |
755 | else | |
756 | ocfs2_dentry_unlock(dentry, 1); | |
757 | ||
758 | return ret; | |
759 | } | |
760 | ||
17ff7856 MF |
761 | static inline int inode_is_unlinkable(struct inode *inode) |
762 | { | |
763 | if (S_ISDIR(inode->i_mode)) { | |
764 | if (inode->i_nlink == 2) | |
765 | return 1; | |
766 | return 0; | |
767 | } | |
768 | ||
769 | if (inode->i_nlink == 1) | |
770 | return 1; | |
771 | return 0; | |
772 | } | |
773 | ||
ccd979bd MF |
774 | static int ocfs2_unlink(struct inode *dir, |
775 | struct dentry *dentry) | |
776 | { | |
777 | int status; | |
30a4f5e8 | 778 | int child_locked = 0; |
ccd979bd | 779 | struct inode *inode = dentry->d_inode; |
5098c27b | 780 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
781 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
782 | u64 blkno; | |
783 | struct ocfs2_dinode *fe = NULL; | |
784 | struct buffer_head *fe_bh = NULL; | |
785 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 786 | handle_t *handle = NULL; |
ccd979bd | 787 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
788 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
789 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd MF |
790 | |
791 | mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry, | |
792 | dentry->d_name.len, dentry->d_name.name); | |
793 | ||
794 | BUG_ON(dentry->d_parent->d_inode != dir); | |
795 | ||
b0697053 | 796 | mlog(0, "ino = %llu\n", (unsigned long long)OCFS2_I(inode)->ip_blkno); |
ccd979bd MF |
797 | |
798 | if (inode == osb->root_inode) { | |
799 | mlog(0, "Cannot delete the root directory\n"); | |
30a4f5e8 | 800 | return -EPERM; |
ccd979bd MF |
801 | } |
802 | ||
cb25797d JK |
803 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
804 | OI_LS_PARENT); | |
ccd979bd MF |
805 | if (status < 0) { |
806 | if (status != -ENOENT) | |
807 | mlog_errno(status); | |
30a4f5e8 | 808 | return status; |
ccd979bd MF |
809 | } |
810 | ||
811 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
812 | dentry->d_name.len, &blkno, dir, |
813 | &lookup); | |
ccd979bd MF |
814 | if (status < 0) { |
815 | if (status != -ENOENT) | |
816 | mlog_errno(status); | |
817 | goto leave; | |
818 | } | |
819 | ||
820 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
821 | status = -ENOENT; | |
822 | ||
b0697053 MF |
823 | mlog(0, "ip_blkno %llu != dirent blkno %llu ip_flags = %x\n", |
824 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
825 | (unsigned long long)blkno, OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
826 | goto leave; |
827 | } | |
828 | ||
e63aecb6 | 829 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
830 | if (status < 0) { |
831 | if (status != -ENOENT) | |
832 | mlog_errno(status); | |
833 | goto leave; | |
834 | } | |
30a4f5e8 | 835 | child_locked = 1; |
ccd979bd MF |
836 | |
837 | if (S_ISDIR(inode->i_mode)) { | |
b80b549c | 838 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
ccd979bd MF |
839 | status = -ENOTEMPTY; |
840 | goto leave; | |
841 | } | |
842 | } | |
843 | ||
379dfe9d | 844 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 845 | if (status < 0) { |
34d024f8 | 846 | /* This remote delete should succeed under all normal |
ccd979bd MF |
847 | * circumstances. */ |
848 | mlog_errno(status); | |
849 | goto leave; | |
850 | } | |
851 | ||
17ff7856 | 852 | if (inode_is_unlinkable(inode)) { |
19bd341f TM |
853 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
854 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 855 | orphan_name, &orphan_insert); |
ccd979bd MF |
856 | if (status < 0) { |
857 | mlog_errno(status); | |
858 | goto leave; | |
859 | } | |
860 | } | |
861 | ||
a90714c1 | 862 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
863 | if (IS_ERR(handle)) { |
864 | status = PTR_ERR(handle); | |
865 | handle = NULL; | |
866 | mlog_errno(status); | |
867 | goto leave; | |
868 | } | |
869 | ||
0cf2f763 | 870 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 871 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
872 | if (status < 0) { |
873 | mlog_errno(status); | |
874 | goto leave; | |
875 | } | |
876 | ||
877 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
878 | ||
17ff7856 | 879 | if (inode_is_unlinkable(inode)) { |
ccd979bd | 880 | status = ocfs2_orphan_add(osb, handle, inode, fe, orphan_name, |
4a12ca3a | 881 | &orphan_insert, orphan_dir); |
ccd979bd MF |
882 | if (status < 0) { |
883 | mlog_errno(status); | |
884 | goto leave; | |
885 | } | |
886 | } | |
887 | ||
888 | /* delete the name from the parent dir */ | |
4a12ca3a | 889 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
890 | if (status < 0) { |
891 | mlog_errno(status); | |
892 | goto leave; | |
893 | } | |
894 | ||
17ff7856 MF |
895 | if (S_ISDIR(inode->i_mode)) |
896 | drop_nlink(inode); | |
897 | drop_nlink(inode); | |
198a1ca3 | 898 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
899 | |
900 | status = ocfs2_journal_dirty(handle, fe_bh); | |
901 | if (status < 0) { | |
902 | mlog_errno(status); | |
903 | goto leave; | |
904 | } | |
905 | ||
592282cf MF |
906 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; |
907 | if (S_ISDIR(inode->i_mode)) | |
17ff7856 | 908 | drop_nlink(dir); |
592282cf MF |
909 | |
910 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
911 | if (status < 0) { | |
912 | mlog_errno(status); | |
913 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 914 | inc_nlink(dir); |
ccd979bd MF |
915 | } |
916 | ||
917 | leave: | |
ccd979bd | 918 | if (handle) |
02dc1af4 | 919 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 920 | |
30a4f5e8 | 921 | if (child_locked) |
e63aecb6 | 922 | ocfs2_inode_unlock(inode, 1); |
30a4f5e8 | 923 | |
e63aecb6 | 924 | ocfs2_inode_unlock(dir, 1); |
30a4f5e8 | 925 | |
5098c27b MF |
926 | if (orphan_dir) { |
927 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 928 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
929 | mutex_unlock(&orphan_dir->i_mutex); |
930 | iput(orphan_dir); | |
931 | } | |
932 | ||
a81cb88b | 933 | brelse(fe_bh); |
a81cb88b | 934 | brelse(parent_node_bh); |
4a12ca3a MF |
935 | |
936 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
937 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd MF |
938 | |
939 | mlog_exit(status); | |
940 | ||
941 | return status; | |
942 | } | |
943 | ||
944 | /* | |
945 | * The only place this should be used is rename! | |
946 | * if they have the same id, then the 1st one is the only one locked. | |
947 | */ | |
948 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
949 | struct buffer_head **bh1, |
950 | struct inode *inode1, | |
951 | struct buffer_head **bh2, | |
952 | struct inode *inode2) | |
953 | { | |
954 | int status; | |
955 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); | |
956 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
957 | struct buffer_head **tmpbh; | |
958 | struct inode *tmpinode; | |
959 | ||
b0697053 MF |
960 | mlog_entry("(inode1 = %llu, inode2 = %llu)\n", |
961 | (unsigned long long)oi1->ip_blkno, | |
962 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 963 | |
ccd979bd MF |
964 | if (*bh1) |
965 | *bh1 = NULL; | |
966 | if (*bh2) | |
967 | *bh2 = NULL; | |
968 | ||
969 | /* we always want to lock the one with the lower lockid first. */ | |
970 | if (oi1->ip_blkno != oi2->ip_blkno) { | |
971 | if (oi1->ip_blkno < oi2->ip_blkno) { | |
972 | /* switch id1 and id2 around */ | |
973 | mlog(0, "switching them around...\n"); | |
974 | tmpbh = bh2; | |
975 | bh2 = bh1; | |
976 | bh1 = tmpbh; | |
977 | ||
978 | tmpinode = inode2; | |
979 | inode2 = inode1; | |
980 | inode1 = tmpinode; | |
981 | } | |
982 | /* lock id2 */ | |
cb25797d JK |
983 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
984 | OI_LS_RENAME1); | |
ccd979bd MF |
985 | if (status < 0) { |
986 | if (status != -ENOENT) | |
987 | mlog_errno(status); | |
988 | goto bail; | |
989 | } | |
990 | } | |
8d5596c6 | 991 | |
ccd979bd | 992 | /* lock id1 */ |
cb25797d | 993 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, OI_LS_RENAME2); |
ccd979bd | 994 | if (status < 0) { |
8d5596c6 MF |
995 | /* |
996 | * An error return must mean that no cluster locks | |
997 | * were held on function exit. | |
998 | */ | |
999 | if (oi1->ip_blkno != oi2->ip_blkno) | |
e63aecb6 | 1000 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 | 1001 | |
ccd979bd MF |
1002 | if (status != -ENOENT) |
1003 | mlog_errno(status); | |
ccd979bd | 1004 | } |
8d5596c6 | 1005 | |
ccd979bd MF |
1006 | bail: |
1007 | mlog_exit(status); | |
1008 | return status; | |
1009 | } | |
1010 | ||
8d5596c6 MF |
1011 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
1012 | { | |
e63aecb6 | 1013 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
1014 | |
1015 | if (inode1 != inode2) | |
e63aecb6 | 1016 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1017 | } |
1018 | ||
ccd979bd MF |
1019 | static int ocfs2_rename(struct inode *old_dir, |
1020 | struct dentry *old_dentry, | |
1021 | struct inode *new_dir, | |
1022 | struct dentry *new_dentry) | |
1023 | { | |
4a12ca3a MF |
1024 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1025 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
ccd979bd MF |
1026 | struct inode *old_inode = old_dentry->d_inode; |
1027 | struct inode *new_inode = new_dentry->d_inode; | |
5098c27b | 1028 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1029 | struct ocfs2_dinode *newfe = NULL; |
1030 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
ccd979bd | 1031 | struct buffer_head *newfe_bh = NULL; |
592282cf | 1032 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd | 1033 | struct ocfs2_super *osb = NULL; |
5b6a3a2b | 1034 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1035 | handle_t *handle = NULL; |
ccd979bd MF |
1036 | struct buffer_head *old_dir_bh = NULL; |
1037 | struct buffer_head *new_dir_bh = NULL; | |
592282cf | 1038 | nlink_t old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1039 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1040 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1041 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1042 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1043 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1044 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
ccd979bd MF |
1045 | |
1046 | /* At some point it might be nice to break this function up a | |
1047 | * bit. */ | |
1048 | ||
1049 | mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p, from='%.*s' to='%.*s')\n", | |
1050 | old_dir, old_dentry, new_dir, new_dentry, | |
1051 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1052 | new_dentry->d_name.len, new_dentry->d_name.name); | |
1053 | ||
1054 | osb = OCFS2_SB(old_dir->i_sb); | |
1055 | ||
1056 | if (new_inode) { | |
1057 | if (!igrab(new_inode)) | |
1058 | BUG(); | |
1059 | } | |
1060 | ||
1b3c3714 | 1061 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1062 | * a/b/c |
1063 | * a/d | |
1064 | * a,b,c, and d are all directories. | |
1065 | * | |
1066 | * from cwd of 'a' on both nodes: | |
1067 | * node1: mv b/c d | |
1068 | * node2: mv d b/c | |
1069 | * | |
1070 | * And that's why, just like the VFS, we need a file system | |
1071 | * rename lock. */ | |
5dabd695 | 1072 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1073 | status = ocfs2_rename_lock(osb); |
1074 | if (status < 0) { | |
1075 | mlog_errno(status); | |
1076 | goto bail; | |
1077 | } | |
1078 | rename_lock = 1; | |
1079 | } | |
1080 | ||
ccd979bd | 1081 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 MF |
1082 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
1083 | &new_dir_bh, new_dir); | |
ccd979bd MF |
1084 | if (status < 0) { |
1085 | mlog_errno(status); | |
1086 | goto bail; | |
1087 | } | |
8d5596c6 | 1088 | parents_locked = 1; |
ccd979bd MF |
1089 | |
1090 | /* make sure both dirs have bhs | |
1091 | * get an extra ref on old_dir_bh if old==new */ | |
1092 | if (!new_dir_bh) { | |
1093 | if (old_dir_bh) { | |
1094 | new_dir_bh = old_dir_bh; | |
1095 | get_bh(new_dir_bh); | |
1096 | } else { | |
1097 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1098 | status = -EIO; | |
1099 | goto bail; | |
1100 | } | |
1101 | } | |
1102 | ||
379dfe9d | 1103 | /* |
592282cf | 1104 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1105 | * also ensures that the downconvert thread on other nodes |
1106 | * won't have to concurrently downconvert the inode and the | |
1107 | * dentry locks. | |
379dfe9d | 1108 | */ |
cb25797d JK |
1109 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
1110 | OI_LS_PARENT); | |
379dfe9d MF |
1111 | if (status < 0) { |
1112 | if (status != -ENOENT) | |
ccd979bd | 1113 | mlog_errno(status); |
379dfe9d MF |
1114 | goto bail; |
1115 | } | |
8d5596c6 | 1116 | old_child_locked = 1; |
ccd979bd | 1117 | |
379dfe9d MF |
1118 | status = ocfs2_remote_dentry_delete(old_dentry); |
1119 | if (status < 0) { | |
1120 | mlog_errno(status); | |
1121 | goto bail; | |
1122 | } | |
1123 | ||
1124 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1125 | u64 old_inode_parent; |
1126 | ||
4a12ca3a | 1127 | update_dot_dot = 1; |
38760e24 | 1128 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1129 | old_inode, |
1130 | &old_inode_dot_dot_res); | |
38760e24 MF |
1131 | if (status) { |
1132 | status = -EIO; | |
ccd979bd | 1133 | goto bail; |
38760e24 | 1134 | } |
ccd979bd | 1135 | |
38760e24 MF |
1136 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1137 | status = -EIO; | |
ccd979bd | 1138 | goto bail; |
38760e24 MF |
1139 | } |
1140 | ||
1141 | if (!new_inode && new_dir != old_dir && | |
198a1ca3 | 1142 | new_dir->i_nlink >= ocfs2_link_max(osb)) { |
38760e24 | 1143 | status = -EMLINK; |
ccd979bd | 1144 | goto bail; |
38760e24 | 1145 | } |
ccd979bd MF |
1146 | } |
1147 | ||
5b6a3a2b MF |
1148 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1149 | old_dentry->d_name.len, | |
1150 | &old_de_ino); | |
1151 | if (status) { | |
1152 | status = -ENOENT; | |
ccd979bd | 1153 | goto bail; |
5b6a3a2b | 1154 | } |
ccd979bd MF |
1155 | |
1156 | /* | |
1157 | * Check for inode number is _not_ due to possible IO errors. | |
1158 | * We might rmdir the source, keep it as pwd of some process | |
1159 | * and merrily kill the link to whatever was created under the | |
1160 | * same name. Goodbye sticky bit ;-< | |
1161 | */ | |
5b6a3a2b MF |
1162 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1163 | status = -ENOENT; | |
ccd979bd | 1164 | goto bail; |
5b6a3a2b | 1165 | } |
ccd979bd MF |
1166 | |
1167 | /* check if the target already exists (in which case we need | |
1168 | * to delete it */ | |
1169 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1170 | new_dentry->d_name.len, | |
4a12ca3a MF |
1171 | &newfe_blkno, new_dir, |
1172 | &target_lookup_res); | |
ccd979bd MF |
1173 | /* The only error we allow here is -ENOENT because the new |
1174 | * file not existing is perfectly valid. */ | |
1175 | if ((status < 0) && (status != -ENOENT)) { | |
1176 | /* If we cannot find the file specified we should just */ | |
1177 | /* return the error... */ | |
1178 | mlog_errno(status); | |
1179 | goto bail; | |
1180 | } | |
4a12ca3a MF |
1181 | if (status == 0) |
1182 | target_exists = 1; | |
ccd979bd | 1183 | |
4a12ca3a | 1184 | if (!target_exists && new_inode) { |
e325a88f SE |
1185 | /* |
1186 | * Target was unlinked by another node while we were | |
1187 | * waiting to get to ocfs2_rename(). There isn't | |
1188 | * anything we can do here to help the situation, so | |
1189 | * bubble up the appropriate error. | |
1190 | */ | |
1191 | status = -ENOENT; | |
1192 | goto bail; | |
1193 | } | |
ccd979bd MF |
1194 | |
1195 | /* In case we need to overwrite an existing file, we blow it | |
1196 | * away first */ | |
4a12ca3a | 1197 | if (target_exists) { |
ccd979bd MF |
1198 | /* VFS didn't think there existed an inode here, but |
1199 | * someone else in the cluster must have raced our | |
1200 | * rename to create one. Today we error cleanly, in | |
1201 | * the future we should consider calling iget to build | |
1202 | * a new struct inode for this entry. */ | |
1203 | if (!new_inode) { | |
1204 | status = -EACCES; | |
1205 | ||
1206 | mlog(0, "We found an inode for name %.*s but VFS " | |
1207 | "didn't give us one.\n", new_dentry->d_name.len, | |
1208 | new_dentry->d_name.name); | |
1209 | goto bail; | |
1210 | } | |
1211 | ||
1212 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1213 | status = -EACCES; | |
1214 | ||
b0697053 MF |
1215 | mlog(0, "Inode %llu and dir %llu disagree. flags = %x\n", |
1216 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, | |
1217 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1218 | OCFS2_I(new_inode)->ip_flags); |
1219 | goto bail; | |
1220 | } | |
1221 | ||
e63aecb6 | 1222 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1223 | if (status < 0) { |
1224 | if (status != -ENOENT) | |
1225 | mlog_errno(status); | |
1226 | goto bail; | |
1227 | } | |
8d5596c6 | 1228 | new_child_locked = 1; |
ccd979bd | 1229 | |
379dfe9d | 1230 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1231 | if (status < 0) { |
1232 | mlog_errno(status); | |
1233 | goto bail; | |
1234 | } | |
1235 | ||
1236 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1237 | ||
4a12ca3a MF |
1238 | mlog(0, "aha rename over existing... new_blkno=%llu " |
1239 | "newfebh=%p bhblocknr=%llu\n", | |
b0697053 | 1240 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1241 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1242 | ||
1243 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1244 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
19bd341f TM |
1245 | OCFS2_I(new_inode)->ip_blkno, |
1246 | orphan_name, &orphan_insert); | |
ccd979bd MF |
1247 | if (status < 0) { |
1248 | mlog_errno(status); | |
1249 | goto bail; | |
1250 | } | |
1251 | } | |
1252 | } else { | |
1253 | BUG_ON(new_dentry->d_parent->d_inode != new_dir); | |
1254 | ||
1255 | status = ocfs2_check_dir_for_entry(new_dir, | |
1256 | new_dentry->d_name.name, | |
1257 | new_dentry->d_name.len); | |
1258 | if (status) | |
1259 | goto bail; | |
1260 | ||
1261 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1262 | new_dentry->d_name.name, | |
1263 | new_dentry->d_name.len, | |
4a12ca3a | 1264 | &target_insert); |
ccd979bd MF |
1265 | if (status < 0) { |
1266 | mlog_errno(status); | |
1267 | goto bail; | |
1268 | } | |
1269 | } | |
1270 | ||
a90714c1 | 1271 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1272 | if (IS_ERR(handle)) { |
1273 | status = PTR_ERR(handle); | |
1274 | handle = NULL; | |
1275 | mlog_errno(status); | |
1276 | goto bail; | |
1277 | } | |
1278 | ||
4a12ca3a | 1279 | if (target_exists) { |
ccd979bd | 1280 | if (S_ISDIR(new_inode->i_mode)) { |
b80b549c MF |
1281 | if (new_inode->i_nlink != 2 || |
1282 | !ocfs2_empty_dir(new_inode)) { | |
ccd979bd MF |
1283 | status = -ENOTEMPTY; |
1284 | goto bail; | |
1285 | } | |
1286 | } | |
0cf2f763 JB |
1287 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
1288 | newfe_bh, | |
13723d00 | 1289 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1290 | if (status < 0) { |
1291 | mlog_errno(status); | |
1292 | goto bail; | |
1293 | } | |
1294 | ||
1295 | if (S_ISDIR(new_inode->i_mode) || | |
198a1ca3 | 1296 | (ocfs2_read_links_count(newfe) == 1)) { |
ccd979bd MF |
1297 | status = ocfs2_orphan_add(osb, handle, new_inode, |
1298 | newfe, orphan_name, | |
4a12ca3a | 1299 | &orphan_insert, orphan_dir); |
ccd979bd MF |
1300 | if (status < 0) { |
1301 | mlog_errno(status); | |
1302 | goto bail; | |
1303 | } | |
1304 | } | |
1305 | ||
1306 | /* change the dirent to point to the correct inode */ | |
4a12ca3a MF |
1307 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1308 | old_inode); | |
ccd979bd MF |
1309 | if (status < 0) { |
1310 | mlog_errno(status); | |
1311 | goto bail; | |
1312 | } | |
ccd979bd | 1313 | new_dir->i_version++; |
ccd979bd MF |
1314 | |
1315 | if (S_ISDIR(new_inode->i_mode)) | |
198a1ca3 | 1316 | ocfs2_set_links_count(newfe, 0); |
ccd979bd | 1317 | else |
198a1ca3 | 1318 | ocfs2_add_links_count(newfe, -1); |
ccd979bd MF |
1319 | |
1320 | status = ocfs2_journal_dirty(handle, newfe_bh); | |
1321 | if (status < 0) { | |
1322 | mlog_errno(status); | |
1323 | goto bail; | |
1324 | } | |
1325 | } else { | |
1326 | /* if the name was not found in new_dir, add it now */ | |
1327 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1328 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1329 | new_dir_bh, &target_insert); |
ccd979bd MF |
1330 | } |
1331 | ||
1332 | old_inode->i_ctime = CURRENT_TIME; | |
1333 | mark_inode_dirty(old_inode); | |
480214d7 | 1334 | |
0cf2f763 JB |
1335 | status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), |
1336 | old_inode_bh, | |
13723d00 | 1337 | OCFS2_JOURNAL_ACCESS_WRITE); |
480214d7 SM |
1338 | if (status >= 0) { |
1339 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1340 | ||
1341 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); | |
1342 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); | |
1343 | ||
1344 | status = ocfs2_journal_dirty(handle, old_inode_bh); | |
1345 | if (status < 0) | |
1346 | mlog_errno(status); | |
1347 | } else | |
1348 | mlog_errno(status); | |
ccd979bd | 1349 | |
5b6a3a2b MF |
1350 | /* |
1351 | * Now that the name has been added to new_dir, remove the old name. | |
1352 | * | |
1353 | * We don't keep any directory entry context around until now | |
1354 | * because the insert might have changed the type of directory | |
1355 | * we're dealing with. | |
1356 | */ | |
4a12ca3a MF |
1357 | status = ocfs2_find_entry(old_dentry->d_name.name, |
1358 | old_dentry->d_name.len, old_dir, | |
1359 | &old_entry_lookup); | |
1360 | if (status) | |
5b6a3a2b | 1361 | goto bail; |
5b6a3a2b | 1362 | |
4a12ca3a | 1363 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
ccd979bd MF |
1364 | if (status < 0) { |
1365 | mlog_errno(status); | |
1366 | goto bail; | |
1367 | } | |
1368 | ||
1369 | if (new_inode) { | |
1370 | new_inode->i_nlink--; | |
1371 | new_inode->i_ctime = CURRENT_TIME; | |
1372 | } | |
1373 | old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME; | |
4a12ca3a MF |
1374 | |
1375 | if (update_dot_dot) { | |
1376 | status = ocfs2_update_entry(old_inode, handle, | |
1377 | &old_inode_dot_dot_res, new_dir); | |
ccd979bd MF |
1378 | old_dir->i_nlink--; |
1379 | if (new_inode) { | |
1380 | new_inode->i_nlink--; | |
1381 | } else { | |
d8c76e6f | 1382 | inc_nlink(new_dir); |
ccd979bd MF |
1383 | mark_inode_dirty(new_dir); |
1384 | } | |
1385 | } | |
1386 | mark_inode_dirty(old_dir); | |
592282cf MF |
1387 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1388 | if (new_inode) { | |
ccd979bd | 1389 | mark_inode_dirty(new_inode); |
592282cf MF |
1390 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1391 | } | |
ccd979bd | 1392 | |
592282cf MF |
1393 | if (old_dir != new_dir) { |
1394 | /* Keep the same times on both directories.*/ | |
1395 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; | |
1396 | ||
1397 | /* | |
1398 | * This will also pick up the i_nlink change from the | |
1399 | * block above. | |
1400 | */ | |
1401 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1402 | } | |
ccd979bd MF |
1403 | |
1404 | if (old_dir_nlink != old_dir->i_nlink) { | |
1405 | if (!old_dir_bh) { | |
1406 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1407 | "%llu from %d to %d but bh is NULL!\n", |
1408 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1409 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1410 | } else { |
1411 | struct ocfs2_dinode *fe; | |
0cf2f763 JB |
1412 | status = ocfs2_journal_access_di(handle, |
1413 | INODE_CACHE(old_dir), | |
1414 | old_dir_bh, | |
1415 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd | 1416 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
198a1ca3 | 1417 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
ccd979bd MF |
1418 | status = ocfs2_journal_dirty(handle, old_dir_bh); |
1419 | } | |
1420 | } | |
379dfe9d | 1421 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1422 | status = 0; |
1423 | bail: | |
1424 | if (rename_lock) | |
1425 | ocfs2_rename_unlock(osb); | |
1426 | ||
1427 | if (handle) | |
02dc1af4 | 1428 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1429 | |
8d5596c6 MF |
1430 | if (parents_locked) |
1431 | ocfs2_double_unlock(old_dir, new_dir); | |
1432 | ||
1433 | if (old_child_locked) | |
e63aecb6 | 1434 | ocfs2_inode_unlock(old_inode, 1); |
8d5596c6 MF |
1435 | |
1436 | if (new_child_locked) | |
e63aecb6 | 1437 | ocfs2_inode_unlock(new_inode, 1); |
8d5596c6 | 1438 | |
5098c27b MF |
1439 | if (orphan_dir) { |
1440 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1441 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
1442 | mutex_unlock(&orphan_dir->i_mutex); |
1443 | iput(orphan_dir); | |
1444 | } | |
1445 | ||
ccd979bd MF |
1446 | if (new_inode) |
1447 | sync_mapping_buffers(old_inode->i_mapping); | |
1448 | ||
1449 | if (new_inode) | |
1450 | iput(new_inode); | |
4a12ca3a MF |
1451 | |
1452 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1453 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1454 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1455 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1456 | ocfs2_free_dir_lookup_result(&target_insert); | |
1457 | ||
a81cb88b MF |
1458 | brelse(newfe_bh); |
1459 | brelse(old_inode_bh); | |
1460 | brelse(old_dir_bh); | |
1461 | brelse(new_dir_bh); | |
ccd979bd MF |
1462 | |
1463 | mlog_exit(status); | |
1464 | ||
1465 | return status; | |
1466 | } | |
1467 | ||
1468 | /* | |
1469 | * we expect i_size = strlen(symname). Copy symname into the file | |
1470 | * data, including the null terminator. | |
1471 | */ | |
1472 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1473 | handle_t *handle, |
ccd979bd MF |
1474 | struct inode *inode, |
1475 | const char *symname) | |
1476 | { | |
1477 | struct buffer_head **bhs = NULL; | |
1478 | const char *c; | |
1479 | struct super_block *sb = osb->sb; | |
4f902c37 | 1480 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1481 | int virtual, blocks, status, i, bytes_left; |
1482 | ||
1483 | bytes_left = i_size_read(inode) + 1; | |
1484 | /* we can't trust i_blocks because we're actually going to | |
1485 | * write i_size + 1 bytes. */ | |
1486 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1487 | ||
5515eff8 AM |
1488 | mlog_entry("i_blocks = %llu, i_size = %llu, blocks = %d\n", |
1489 | (unsigned long long)inode->i_blocks, | |
1490 | i_size_read(inode), blocks); | |
ccd979bd MF |
1491 | |
1492 | /* Sanity check -- make sure we're going to fit. */ | |
1493 | if (bytes_left > | |
1494 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1495 | status = -EIO; | |
1496 | mlog_errno(status); | |
1497 | goto bail; | |
1498 | } | |
1499 | ||
1500 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1501 | if (!bhs) { | |
1502 | status = -ENOMEM; | |
1503 | mlog_errno(status); | |
1504 | goto bail; | |
1505 | } | |
1506 | ||
49cb8d2d MF |
1507 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1508 | NULL); | |
ccd979bd MF |
1509 | if (status < 0) { |
1510 | mlog_errno(status); | |
1511 | goto bail; | |
1512 | } | |
1513 | ||
1514 | /* links can never be larger than one cluster so we know this | |
1515 | * is all going to be contiguous, but do a sanity check | |
1516 | * anyway. */ | |
1517 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1518 | status = -EIO; | |
1519 | mlog_errno(status); | |
1520 | goto bail; | |
1521 | } | |
1522 | ||
1523 | virtual = 0; | |
1524 | while(bytes_left > 0) { | |
1525 | c = &symname[virtual * sb->s_blocksize]; | |
1526 | ||
1527 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1528 | if (!bhs[virtual]) { | |
1529 | status = -ENOMEM; | |
1530 | mlog_errno(status); | |
1531 | goto bail; | |
1532 | } | |
8cb471e8 JB |
1533 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
1534 | bhs[virtual]); | |
ccd979bd | 1535 | |
0cf2f763 JB |
1536 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
1537 | bhs[virtual], | |
ccd979bd MF |
1538 | OCFS2_JOURNAL_ACCESS_CREATE); |
1539 | if (status < 0) { | |
1540 | mlog_errno(status); | |
1541 | goto bail; | |
1542 | } | |
1543 | ||
1544 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1545 | ||
1546 | memcpy(bhs[virtual]->b_data, c, | |
1547 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1548 | bytes_left); | |
1549 | ||
1550 | status = ocfs2_journal_dirty(handle, bhs[virtual]); | |
1551 | if (status < 0) { | |
1552 | mlog_errno(status); | |
1553 | goto bail; | |
1554 | } | |
1555 | ||
1556 | virtual++; | |
1557 | p_blkno++; | |
1558 | bytes_left -= sb->s_blocksize; | |
1559 | } | |
1560 | ||
1561 | status = 0; | |
1562 | bail: | |
1563 | ||
1564 | if (bhs) { | |
1565 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1566 | brelse(bhs[i]); |
ccd979bd MF |
1567 | kfree(bhs); |
1568 | } | |
1569 | ||
1570 | mlog_exit(status); | |
1571 | return status; | |
1572 | } | |
1573 | ||
1574 | static int ocfs2_symlink(struct inode *dir, | |
1575 | struct dentry *dentry, | |
1576 | const char *symname) | |
1577 | { | |
1578 | int status, l, credits; | |
1579 | u64 newsize; | |
1580 | struct ocfs2_super *osb = NULL; | |
1581 | struct inode *inode = NULL; | |
1582 | struct super_block *sb; | |
1583 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1584 | struct buffer_head *parent_fe_bh = NULL; |
1585 | struct ocfs2_dinode *fe = NULL; | |
1586 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1587 | handle_t *handle = NULL; |
ccd979bd MF |
1588 | struct ocfs2_alloc_context *inode_ac = NULL; |
1589 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1590 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1591 | int want_clusters = 0; | |
1592 | int xattr_credits = 0; | |
1593 | struct ocfs2_security_xattr_info si = { | |
1594 | .enable = 1, | |
1595 | }; | |
a90714c1 | 1596 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1597 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
1598 | |
1599 | mlog_entry("(0x%p, 0x%p, symname='%s' actual='%.*s')\n", dir, | |
1600 | dentry, symname, dentry->d_name.len, dentry->d_name.name); | |
1601 | ||
1602 | sb = dir->i_sb; | |
1603 | osb = OCFS2_SB(sb); | |
1604 | ||
1605 | l = strlen(symname) + 1; | |
1606 | ||
1607 | credits = ocfs2_calc_symlink_credits(sb); | |
1608 | ||
ccd979bd | 1609 | /* lock the parent directory */ |
e63aecb6 | 1610 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1611 | if (status < 0) { |
1612 | if (status != -ENOENT) | |
1613 | mlog_errno(status); | |
6d8fc40e | 1614 | return status; |
ccd979bd MF |
1615 | } |
1616 | ||
1617 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
198a1ca3 | 1618 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
1619 | /* can't make a file in a deleted directory. */ |
1620 | status = -ENOENT; | |
1621 | goto bail; | |
1622 | } | |
1623 | ||
1624 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1625 | dentry->d_name.len); | |
1626 | if (status) | |
1627 | goto bail; | |
1628 | ||
1629 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1630 | dentry->d_name.name, | |
4a12ca3a | 1631 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1632 | if (status < 0) { |
1633 | mlog_errno(status); | |
1634 | goto bail; | |
1635 | } | |
1636 | ||
da5cbf2f | 1637 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1638 | if (status < 0) { |
1639 | if (status != -ENOSPC) | |
1640 | mlog_errno(status); | |
1641 | goto bail; | |
1642 | } | |
1643 | ||
f5d36202 TY |
1644 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
1645 | if (!inode) { | |
1646 | status = -ENOMEM; | |
1647 | mlog_errno(status); | |
1648 | goto bail; | |
1649 | } | |
1650 | ||
534eaddd TY |
1651 | /* get security xattr */ |
1652 | status = ocfs2_init_security_get(inode, dir, &si); | |
1653 | if (status) { | |
1654 | if (status == -EOPNOTSUPP) | |
1655 | si.enable = 0; | |
1656 | else { | |
1657 | mlog_errno(status); | |
1658 | goto bail; | |
1659 | } | |
1660 | } | |
1661 | ||
1662 | /* calculate meta data/clusters for setting security xattr */ | |
1663 | if (si.enable) { | |
1664 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1665 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1666 | if (status < 0) { |
534eaddd | 1667 | mlog_errno(status); |
ccd979bd MF |
1668 | goto bail; |
1669 | } | |
1670 | } | |
1671 | ||
534eaddd TY |
1672 | /* don't reserve bitmap space for fast symlinks. */ |
1673 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1674 | want_clusters += 1; | |
1675 | ||
1676 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1677 | if (status < 0) { | |
1678 | if (status != -ENOSPC) | |
1679 | mlog_errno(status); | |
1680 | goto bail; | |
1681 | } | |
1682 | ||
1683 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1684 | if (IS_ERR(handle)) { |
1685 | status = PTR_ERR(handle); | |
1686 | handle = NULL; | |
1687 | mlog_errno(status); | |
1688 | goto bail; | |
1689 | } | |
1690 | ||
a90714c1 JK |
1691 | /* We don't use standard VFS wrapper because we don't want vfs_dq_init |
1692 | * to be called. */ | |
1693 | if (sb_any_quota_active(osb->sb) && | |
1694 | osb->sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA) { | |
1695 | status = -EDQUOT; | |
1696 | goto bail; | |
1697 | } | |
1698 | did_quota_inode = 1; | |
1699 | ||
19bd341f TM |
1700 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, |
1701 | inode->i_mode, dentry->d_name.len, | |
1702 | dentry->d_name.name); | |
1703 | ||
1704 | status = ocfs2_mknod_locked(osb, dir, inode, | |
f5d36202 TY |
1705 | 0, &new_fe_bh, parent_fe_bh, handle, |
1706 | inode_ac); | |
ccd979bd MF |
1707 | if (status < 0) { |
1708 | mlog_errno(status); | |
1709 | goto bail; | |
1710 | } | |
1711 | ||
1712 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1713 | inode->i_rdev = 0; | |
1714 | newsize = l - 1; | |
1715 | if (l > ocfs2_fast_symlink_chars(sb)) { | |
dcd0538f MF |
1716 | u32 offset = 0; |
1717 | ||
ccd979bd | 1718 | inode->i_op = &ocfs2_symlink_inode_operations; |
a90714c1 JK |
1719 | if (vfs_dq_alloc_space_nodirty(inode, |
1720 | ocfs2_clusters_to_bytes(osb->sb, 1))) { | |
1721 | status = -EDQUOT; | |
1722 | goto bail; | |
1723 | } | |
1724 | did_quota = 1; | |
0eb8d47e TM |
1725 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1726 | new_fe_bh, | |
1727 | handle, data_ac, NULL, | |
1728 | NULL); | |
ccd979bd MF |
1729 | if (status < 0) { |
1730 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1731 | mlog(ML_ERROR, |
1732 | "Failed to extend file to %llu\n", | |
1733 | (unsigned long long)newsize); | |
ccd979bd MF |
1734 | mlog_errno(status); |
1735 | status = -ENOSPC; | |
1736 | } | |
1737 | goto bail; | |
1738 | } | |
1739 | i_size_write(inode, newsize); | |
8110b073 | 1740 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd MF |
1741 | } else { |
1742 | inode->i_op = &ocfs2_fast_symlink_inode_operations; | |
1743 | memcpy((char *) fe->id2.i_symlink, symname, l); | |
1744 | i_size_write(inode, newsize); | |
1745 | inode->i_blocks = 0; | |
1746 | } | |
1747 | ||
1748 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1749 | if (status < 0) { | |
1750 | mlog_errno(status); | |
1751 | goto bail; | |
1752 | } | |
1753 | ||
1754 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
1755 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
1756 | symname); | |
1757 | if (status < 0) { | |
1758 | mlog_errno(status); | |
1759 | goto bail; | |
1760 | } | |
1761 | } | |
1762 | ||
534eaddd TY |
1763 | if (si.enable) { |
1764 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
1765 | xattr_ac, data_ac); | |
1766 | if (status < 0) { | |
1767 | mlog_errno(status); | |
1768 | goto bail; | |
1769 | } | |
1770 | } | |
1771 | ||
ccd979bd MF |
1772 | status = ocfs2_add_entry(handle, dentry, inode, |
1773 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
4a12ca3a | 1774 | &lookup); |
ccd979bd MF |
1775 | if (status < 0) { |
1776 | mlog_errno(status); | |
1777 | goto bail; | |
1778 | } | |
1779 | ||
0027dd5b | 1780 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
1781 | if (status) { |
1782 | mlog_errno(status); | |
1783 | goto bail; | |
1784 | } | |
1785 | ||
ccd979bd MF |
1786 | insert_inode_hash(inode); |
1787 | dentry->d_op = &ocfs2_dentry_ops; | |
1788 | d_instantiate(dentry, inode); | |
1789 | bail: | |
a90714c1 JK |
1790 | if (status < 0 && did_quota) |
1791 | vfs_dq_free_space_nodirty(inode, | |
1792 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1793 | if (status < 0 && did_quota_inode) | |
1794 | vfs_dq_free_inode(inode); | |
ccd979bd | 1795 | if (handle) |
02dc1af4 | 1796 | ocfs2_commit_trans(osb, handle); |
6d8fc40e | 1797 | |
e63aecb6 | 1798 | ocfs2_inode_unlock(dir, 1); |
6d8fc40e | 1799 | |
a81cb88b MF |
1800 | brelse(new_fe_bh); |
1801 | brelse(parent_fe_bh); | |
534eaddd TY |
1802 | kfree(si.name); |
1803 | kfree(si.value); | |
4a12ca3a | 1804 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
1805 | if (inode_ac) |
1806 | ocfs2_free_alloc_context(inode_ac); | |
1807 | if (data_ac) | |
1808 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
1809 | if (xattr_ac) |
1810 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 TY |
1811 | if ((status < 0) && inode) { |
1812 | clear_nlink(inode); | |
ccd979bd | 1813 | iput(inode); |
f5d36202 | 1814 | } |
ccd979bd MF |
1815 | |
1816 | mlog_exit(status); | |
1817 | ||
1818 | return status; | |
1819 | } | |
1820 | ||
ccd979bd MF |
1821 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
1822 | { | |
1823 | int status, namelen; | |
1824 | ||
1825 | mlog_entry_void(); | |
1826 | ||
b0697053 MF |
1827 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
1828 | (long long)blkno); | |
ccd979bd MF |
1829 | if (namelen <= 0) { |
1830 | if (namelen) | |
1831 | status = namelen; | |
1832 | else | |
1833 | status = -EINVAL; | |
1834 | mlog_errno(status); | |
1835 | goto bail; | |
1836 | } | |
1837 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
1838 | status = -EINVAL; | |
1839 | mlog_errno(status); | |
1840 | goto bail; | |
1841 | } | |
1842 | ||
1843 | mlog(0, "built filename '%s' for orphan dir (len=%d)\n", name, | |
1844 | namelen); | |
1845 | ||
1846 | status = 0; | |
1847 | bail: | |
1848 | mlog_exit(status); | |
1849 | return status; | |
1850 | } | |
1851 | ||
1852 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
5098c27b | 1853 | struct inode **ret_orphan_dir, |
19bd341f | 1854 | u64 blkno, |
ccd979bd | 1855 | char *name, |
4a12ca3a | 1856 | struct ocfs2_dir_lookup_result *lookup) |
ccd979bd | 1857 | { |
5098c27b | 1858 | struct inode *orphan_dir_inode; |
ccd979bd MF |
1859 | struct buffer_head *orphan_dir_bh = NULL; |
1860 | int status = 0; | |
1861 | ||
19bd341f | 1862 | status = ocfs2_blkno_stringify(blkno, name); |
ccd979bd MF |
1863 | if (status < 0) { |
1864 | mlog_errno(status); | |
5098c27b | 1865 | return status; |
ccd979bd MF |
1866 | } |
1867 | ||
1868 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
1869 | ORPHAN_DIR_SYSTEM_INODE, | |
1870 | osb->slot_num); | |
1871 | if (!orphan_dir_inode) { | |
1872 | status = -ENOENT; | |
1873 | mlog_errno(status); | |
5098c27b | 1874 | return status; |
ccd979bd MF |
1875 | } |
1876 | ||
5098c27b MF |
1877 | mutex_lock(&orphan_dir_inode->i_mutex); |
1878 | ||
e63aecb6 | 1879 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
ccd979bd MF |
1880 | if (status < 0) { |
1881 | mlog_errno(status); | |
1882 | goto leave; | |
1883 | } | |
1884 | ||
1885 | status = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
1886 | orphan_dir_bh, name, | |
4a12ca3a | 1887 | OCFS2_ORPHAN_NAMELEN, lookup); |
ccd979bd | 1888 | if (status < 0) { |
e63aecb6 | 1889 | ocfs2_inode_unlock(orphan_dir_inode, 1); |
5098c27b | 1890 | |
ccd979bd MF |
1891 | mlog_errno(status); |
1892 | goto leave; | |
1893 | } | |
1894 | ||
5098c27b MF |
1895 | *ret_orphan_dir = orphan_dir_inode; |
1896 | ||
ccd979bd | 1897 | leave: |
5098c27b MF |
1898 | if (status) { |
1899 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
ccd979bd | 1900 | iput(orphan_dir_inode); |
5098c27b | 1901 | } |
ccd979bd | 1902 | |
a81cb88b | 1903 | brelse(orphan_dir_bh); |
ccd979bd MF |
1904 | |
1905 | mlog_exit(status); | |
1906 | return status; | |
1907 | } | |
1908 | ||
1909 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 1910 | handle_t *handle, |
ccd979bd MF |
1911 | struct inode *inode, |
1912 | struct ocfs2_dinode *fe, | |
1913 | char *name, | |
4a12ca3a | 1914 | struct ocfs2_dir_lookup_result *lookup, |
5098c27b | 1915 | struct inode *orphan_dir_inode) |
ccd979bd | 1916 | { |
ccd979bd MF |
1917 | struct buffer_head *orphan_dir_bh = NULL; |
1918 | int status = 0; | |
1919 | struct ocfs2_dinode *orphan_fe; | |
1920 | ||
1921 | mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino); | |
1922 | ||
b657c95c | 1923 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
1924 | if (status < 0) { |
1925 | mlog_errno(status); | |
1926 | goto leave; | |
1927 | } | |
1928 | ||
0cf2f763 JB |
1929 | status = ocfs2_journal_access_di(handle, |
1930 | INODE_CACHE(orphan_dir_inode), | |
1931 | orphan_dir_bh, | |
13723d00 | 1932 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1933 | if (status < 0) { |
1934 | mlog_errno(status); | |
1935 | goto leave; | |
1936 | } | |
1937 | ||
1938 | /* we're a cluster, and nlink can change on disk from | |
1939 | * underneath us... */ | |
1940 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
1941 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 MF |
1942 | ocfs2_add_links_count(orphan_fe, 1); |
1943 | orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe); | |
ccd979bd MF |
1944 | |
1945 | status = ocfs2_journal_dirty(handle, orphan_dir_bh); | |
1946 | if (status < 0) { | |
1947 | mlog_errno(status); | |
1948 | goto leave; | |
1949 | } | |
1950 | ||
1951 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
1952 | OCFS2_ORPHAN_NAMELEN, inode, | |
1953 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 1954 | orphan_dir_bh, lookup); |
ccd979bd MF |
1955 | if (status < 0) { |
1956 | mlog_errno(status); | |
1957 | goto leave; | |
1958 | } | |
1959 | ||
1960 | le32_add_cpu(&fe->i_flags, OCFS2_ORPHANED_FL); | |
1961 | ||
1962 | /* Record which orphan dir our inode now resides | |
1963 | * in. delete_inode will use this to determine which orphan | |
1964 | * dir to lock. */ | |
50008630 | 1965 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); |
ccd979bd | 1966 | |
b0697053 MF |
1967 | mlog(0, "Inode %llu orphaned in slot %d\n", |
1968 | (unsigned long long)OCFS2_I(inode)->ip_blkno, osb->slot_num); | |
ccd979bd MF |
1969 | |
1970 | leave: | |
a81cb88b | 1971 | brelse(orphan_dir_bh); |
ccd979bd MF |
1972 | |
1973 | mlog_exit(status); | |
1974 | return status; | |
1975 | } | |
1976 | ||
1977 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
1978 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 1979 | handle_t *handle, |
ccd979bd MF |
1980 | struct inode *orphan_dir_inode, |
1981 | struct inode *inode, | |
1982 | struct buffer_head *orphan_dir_bh) | |
1983 | { | |
1984 | char name[OCFS2_ORPHAN_NAMELEN + 1]; | |
1985 | struct ocfs2_dinode *orphan_fe; | |
1986 | int status = 0; | |
4a12ca3a | 1987 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
1988 | |
1989 | mlog_entry_void(); | |
1990 | ||
1991 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
1992 | if (status < 0) { | |
1993 | mlog_errno(status); | |
1994 | goto leave; | |
1995 | } | |
1996 | ||
b0697053 MF |
1997 | mlog(0, "removing '%s' from orphan dir %llu (namelen=%d)\n", |
1998 | name, (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
1999 | OCFS2_ORPHAN_NAMELEN); | |
ccd979bd MF |
2000 | |
2001 | /* find it's spot in the orphan directory */ | |
4a12ca3a MF |
2002 | status = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, orphan_dir_inode, |
2003 | &lookup); | |
2004 | if (status) { | |
ccd979bd MF |
2005 | mlog_errno(status); |
2006 | goto leave; | |
2007 | } | |
2008 | ||
2009 | /* remove it from the orphan directory */ | |
4a12ca3a | 2010 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
2011 | if (status < 0) { |
2012 | mlog_errno(status); | |
2013 | goto leave; | |
2014 | } | |
2015 | ||
0cf2f763 JB |
2016 | status = ocfs2_journal_access_di(handle, |
2017 | INODE_CACHE(orphan_dir_inode), | |
2018 | orphan_dir_bh, | |
13723d00 | 2019 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2020 | if (status < 0) { |
2021 | mlog_errno(status); | |
2022 | goto leave; | |
2023 | } | |
2024 | ||
2025 | /* do the i_nlink dance! :) */ | |
2026 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2027 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 MF |
2028 | ocfs2_add_links_count(orphan_fe, -1); |
2029 | orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe); | |
ccd979bd MF |
2030 | |
2031 | status = ocfs2_journal_dirty(handle, orphan_dir_bh); | |
2032 | if (status < 0) { | |
2033 | mlog_errno(status); | |
2034 | goto leave; | |
2035 | } | |
2036 | ||
2037 | leave: | |
4a12ca3a | 2038 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
2039 | |
2040 | mlog_exit(status); | |
2041 | return status; | |
2042 | } | |
2043 | ||
bc13d347 TM |
2044 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
2045 | int mode, | |
2046 | struct inode **new_inode) | |
2047 | { | |
2048 | int status, did_quota_inode = 0; | |
2049 | struct inode *inode = NULL; | |
2050 | struct inode *orphan_dir = NULL; | |
2051 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2052 | struct ocfs2_dinode *di = NULL; | |
2053 | handle_t *handle = NULL; | |
2054 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2055 | struct buffer_head *parent_di_bh = NULL; | |
2056 | struct buffer_head *new_di_bh = NULL; | |
2057 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2058 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
2059 | ||
2060 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2061 | if (status < 0) { | |
2062 | if (status != -ENOENT) | |
2063 | mlog_errno(status); | |
2064 | return status; | |
2065 | } | |
2066 | ||
2067 | /* | |
2068 | * We give the orphan dir the root blkno to fake an orphan name, | |
2069 | * and allocate enough space for our insertion. | |
2070 | */ | |
2071 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, | |
2072 | osb->root_blkno, | |
2073 | orphan_name, &orphan_insert); | |
2074 | if (status < 0) { | |
2075 | mlog_errno(status); | |
2076 | goto leave; | |
2077 | } | |
2078 | ||
2079 | /* reserve an inode spot */ | |
2080 | status = ocfs2_reserve_new_inode(osb, &inode_ac); | |
2081 | if (status < 0) { | |
2082 | if (status != -ENOSPC) | |
2083 | mlog_errno(status); | |
2084 | goto leave; | |
2085 | } | |
2086 | ||
2087 | inode = ocfs2_get_init_inode(dir, mode); | |
2088 | if (!inode) { | |
2089 | status = -ENOMEM; | |
2090 | mlog_errno(status); | |
2091 | goto leave; | |
2092 | } | |
2093 | ||
2094 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); | |
2095 | if (IS_ERR(handle)) { | |
2096 | status = PTR_ERR(handle); | |
2097 | handle = NULL; | |
2098 | mlog_errno(status); | |
2099 | goto leave; | |
2100 | } | |
2101 | ||
2102 | /* We don't use standard VFS wrapper because we don't want vfs_dq_init | |
2103 | * to be called. */ | |
2104 | if (sb_any_quota_active(osb->sb) && | |
2105 | osb->sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA) { | |
2106 | status = -EDQUOT; | |
2107 | goto leave; | |
2108 | } | |
2109 | did_quota_inode = 1; | |
2110 | ||
10cf1a02 | 2111 | inode->i_nlink = 0; |
bc13d347 TM |
2112 | /* do the real work now. */ |
2113 | status = ocfs2_mknod_locked(osb, dir, inode, | |
2114 | 0, &new_di_bh, parent_di_bh, handle, | |
2115 | inode_ac); | |
2116 | if (status < 0) { | |
2117 | mlog_errno(status); | |
2118 | goto leave; | |
2119 | } | |
2120 | ||
2121 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, orphan_name); | |
2122 | if (status < 0) { | |
2123 | mlog_errno(status); | |
2124 | goto leave; | |
2125 | } | |
2126 | ||
2127 | di = (struct ocfs2_dinode *)new_di_bh->b_data; | |
2128 | status = ocfs2_orphan_add(osb, handle, inode, di, orphan_name, | |
2129 | &orphan_insert, orphan_dir); | |
2130 | if (status < 0) { | |
2131 | mlog_errno(status); | |
2132 | goto leave; | |
2133 | } | |
2134 | ||
2135 | /* get open lock so that only nodes can't remove it from orphan dir. */ | |
2136 | status = ocfs2_open_lock(inode); | |
2137 | if (status < 0) | |
2138 | mlog_errno(status); | |
2139 | ||
c7d260af | 2140 | insert_inode_hash(inode); |
bc13d347 TM |
2141 | leave: |
2142 | if (status < 0 && did_quota_inode) | |
2143 | vfs_dq_free_inode(inode); | |
2144 | if (handle) | |
2145 | ocfs2_commit_trans(osb, handle); | |
2146 | ||
2147 | if (orphan_dir) { | |
2148 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
2149 | ocfs2_inode_unlock(orphan_dir, 1); | |
2150 | mutex_unlock(&orphan_dir->i_mutex); | |
2151 | iput(orphan_dir); | |
2152 | } | |
2153 | ||
2154 | if (status == -ENOSPC) | |
2155 | mlog(0, "Disk is full\n"); | |
2156 | ||
2157 | if ((status < 0) && inode) { | |
2158 | clear_nlink(inode); | |
2159 | iput(inode); | |
2160 | } | |
2161 | ||
2162 | if (inode_ac) | |
2163 | ocfs2_free_alloc_context(inode_ac); | |
2164 | ||
2165 | brelse(new_di_bh); | |
2166 | ||
2167 | if (!status) | |
2168 | *new_inode = inode; | |
2169 | ||
2170 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2171 | ||
2172 | ocfs2_inode_unlock(dir, 1); | |
2173 | brelse(parent_di_bh); | |
2174 | return status; | |
2175 | } | |
2176 | ||
2177 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, | |
2178 | struct inode *inode, | |
2179 | struct dentry *dentry) | |
2180 | { | |
2181 | int status = 0; | |
2182 | struct buffer_head *parent_di_bh = NULL; | |
2183 | handle_t *handle = NULL; | |
2184 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2185 | struct ocfs2_dinode *dir_di, *di; | |
2186 | struct inode *orphan_dir_inode = NULL; | |
2187 | struct buffer_head *orphan_dir_bh = NULL; | |
2188 | struct buffer_head *di_bh = NULL; | |
2189 | struct ocfs2_dir_lookup_result lookup = { NULL, }; | |
2190 | ||
2191 | mlog_entry("(0x%p, 0x%p, %.*s')\n", dir, dentry, | |
2192 | dentry->d_name.len, dentry->d_name.name); | |
2193 | ||
2194 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2195 | if (status < 0) { | |
2196 | if (status != -ENOENT) | |
2197 | mlog_errno(status); | |
2198 | return status; | |
2199 | } | |
2200 | ||
2201 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; | |
2202 | if (!dir_di->i_links_count) { | |
2203 | /* can't make a file in a deleted directory. */ | |
2204 | status = -ENOENT; | |
2205 | goto leave; | |
2206 | } | |
2207 | ||
2208 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
2209 | dentry->d_name.len); | |
2210 | if (status) | |
2211 | goto leave; | |
2212 | ||
2213 | /* get a spot inside the dir. */ | |
2214 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, | |
2215 | dentry->d_name.name, | |
2216 | dentry->d_name.len, &lookup); | |
2217 | if (status < 0) { | |
2218 | mlog_errno(status); | |
2219 | goto leave; | |
2220 | } | |
2221 | ||
2222 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2223 | ORPHAN_DIR_SYSTEM_INODE, | |
2224 | osb->slot_num); | |
2225 | if (!orphan_dir_inode) { | |
2226 | status = -EEXIST; | |
2227 | mlog_errno(status); | |
2228 | goto leave; | |
2229 | } | |
2230 | ||
2231 | mutex_lock(&orphan_dir_inode->i_mutex); | |
2232 | ||
2233 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2234 | if (status < 0) { | |
2235 | mlog_errno(status); | |
2236 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2237 | iput(orphan_dir_inode); | |
2238 | goto leave; | |
2239 | } | |
2240 | ||
2241 | status = ocfs2_read_inode_block(inode, &di_bh); | |
2242 | if (status < 0) { | |
2243 | mlog_errno(status); | |
2244 | goto orphan_unlock; | |
2245 | } | |
2246 | ||
2247 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); | |
2248 | if (IS_ERR(handle)) { | |
2249 | status = PTR_ERR(handle); | |
2250 | handle = NULL; | |
2251 | mlog_errno(status); | |
2252 | goto orphan_unlock; | |
2253 | } | |
2254 | ||
2255 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), | |
2256 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2257 | if (status < 0) { | |
2258 | mlog_errno(status); | |
2259 | goto out_commit; | |
2260 | } | |
2261 | ||
2262 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
2263 | orphan_dir_bh); | |
2264 | if (status < 0) { | |
2265 | mlog_errno(status); | |
2266 | goto out_commit; | |
2267 | } | |
2268 | ||
2269 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
2270 | le32_add_cpu(&di->i_flags, -OCFS2_ORPHANED_FL); | |
2271 | di->i_orphaned_slot = 0; | |
10cf1a02 TM |
2272 | inode->i_nlink = 1; |
2273 | ocfs2_set_links_count(di, inode->i_nlink); | |
bc13d347 TM |
2274 | ocfs2_journal_dirty(handle, di_bh); |
2275 | ||
2276 | status = ocfs2_add_entry(handle, dentry, inode, | |
2277 | OCFS2_I(inode)->ip_blkno, parent_di_bh, | |
2278 | &lookup); | |
2279 | if (status < 0) { | |
2280 | mlog_errno(status); | |
2281 | goto out_commit; | |
2282 | } | |
2283 | ||
2284 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
2285 | OCFS2_I(dir)->ip_blkno); | |
2286 | if (status) { | |
2287 | mlog_errno(status); | |
2288 | goto out_commit; | |
2289 | } | |
2290 | ||
bc13d347 TM |
2291 | dentry->d_op = &ocfs2_dentry_ops; |
2292 | d_instantiate(dentry, inode); | |
2293 | status = 0; | |
2294 | out_commit: | |
2295 | ocfs2_commit_trans(osb, handle); | |
2296 | orphan_unlock: | |
2297 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
2298 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2299 | iput(orphan_dir_inode); | |
2300 | leave: | |
2301 | ||
2302 | ocfs2_inode_unlock(dir, 1); | |
2303 | ||
2304 | brelse(di_bh); | |
2305 | brelse(parent_di_bh); | |
2306 | brelse(orphan_dir_bh); | |
2307 | ||
2308 | ocfs2_free_dir_lookup_result(&lookup); | |
2309 | ||
2310 | mlog_exit(status); | |
2311 | ||
2312 | return status; | |
2313 | } | |
2314 | ||
92e1d5be | 2315 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2316 | .create = ocfs2_create, |
2317 | .lookup = ocfs2_lookup, | |
2318 | .link = ocfs2_link, | |
2319 | .unlink = ocfs2_unlink, | |
2320 | .rmdir = ocfs2_unlink, | |
2321 | .symlink = ocfs2_symlink, | |
2322 | .mkdir = ocfs2_mkdir, | |
2323 | .mknod = ocfs2_mknod, | |
2324 | .rename = ocfs2_rename, | |
2325 | .setattr = ocfs2_setattr, | |
2326 | .getattr = ocfs2_getattr, | |
d38eb8db | 2327 | .permission = ocfs2_permission, |
cf1d6c76 TY |
2328 | .setxattr = generic_setxattr, |
2329 | .getxattr = generic_getxattr, | |
2330 | .listxattr = ocfs2_listxattr, | |
2331 | .removexattr = generic_removexattr, | |
55f4946e | 2332 | .fiemap = ocfs2_fiemap, |
ccd979bd | 2333 | }; |