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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 | ||
63936dda CH |
351 | status = dquot_alloc_inode(inode); |
352 | if (status) | |
a90714c1 | 353 | goto leave; |
a90714c1 JK |
354 | did_quota_inode = 1; |
355 | ||
19bd341f TM |
356 | mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, |
357 | inode->i_mode, (unsigned long)dev, dentry->d_name.len, | |
358 | dentry->d_name.name); | |
359 | ||
ccd979bd | 360 | /* do the real work now. */ |
19bd341f | 361 | status = ocfs2_mknod_locked(osb, dir, inode, dev, |
ccd979bd | 362 | &new_fe_bh, parent_fe_bh, handle, |
f5d36202 | 363 | inode_ac); |
ccd979bd MF |
364 | if (status < 0) { |
365 | mlog_errno(status); | |
366 | goto leave; | |
367 | } | |
368 | ||
369 | if (S_ISDIR(mode)) { | |
370 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, | |
9b7895ef | 371 | new_fe_bh, data_ac, meta_ac); |
ccd979bd MF |
372 | if (status < 0) { |
373 | mlog_errno(status); | |
374 | goto leave; | |
375 | } | |
376 | ||
0cf2f763 JB |
377 | status = ocfs2_journal_access_di(handle, INODE_CACHE(dir), |
378 | parent_fe_bh, | |
13723d00 | 379 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
380 | if (status < 0) { |
381 | mlog_errno(status); | |
382 | goto leave; | |
383 | } | |
198a1ca3 | 384 | ocfs2_add_links_count(dirfe, 1); |
ccd979bd MF |
385 | status = ocfs2_journal_dirty(handle, parent_fe_bh); |
386 | if (status < 0) { | |
387 | mlog_errno(status); | |
388 | goto leave; | |
389 | } | |
d8c76e6f | 390 | inc_nlink(dir); |
ccd979bd MF |
391 | } |
392 | ||
89c38bd0 | 393 | status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh, |
9b7895ef | 394 | meta_ac, data_ac); |
89c38bd0 TY |
395 | if (status < 0) { |
396 | mlog_errno(status); | |
397 | goto leave; | |
398 | } | |
399 | ||
534eaddd TY |
400 | if (si.enable) { |
401 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
9b7895ef | 402 | meta_ac, data_ac); |
534eaddd TY |
403 | if (status < 0) { |
404 | mlog_errno(status); | |
405 | goto leave; | |
406 | } | |
407 | } | |
408 | ||
ccd979bd MF |
409 | status = ocfs2_add_entry(handle, dentry, inode, |
410 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
4a12ca3a | 411 | &lookup); |
ccd979bd MF |
412 | if (status < 0) { |
413 | mlog_errno(status); | |
414 | goto leave; | |
415 | } | |
416 | ||
379dfe9d | 417 | status = ocfs2_dentry_attach_lock(dentry, inode, |
0027dd5b | 418 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
419 | if (status) { |
420 | mlog_errno(status); | |
421 | goto leave; | |
422 | } | |
423 | ||
ccd979bd MF |
424 | insert_inode_hash(inode); |
425 | dentry->d_op = &ocfs2_dentry_ops; | |
426 | d_instantiate(dentry, inode); | |
427 | status = 0; | |
428 | leave: | |
a90714c1 | 429 | if (status < 0 && did_quota_inode) |
63936dda | 430 | dquot_free_inode(inode); |
ccd979bd | 431 | if (handle) |
02dc1af4 | 432 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 433 | |
e63aecb6 | 434 | ocfs2_inode_unlock(dir, 1); |
e3a82138 | 435 | |
ccd979bd MF |
436 | if (status == -ENOSPC) |
437 | mlog(0, "Disk is full\n"); | |
438 | ||
a81cb88b | 439 | brelse(new_fe_bh); |
a81cb88b | 440 | brelse(parent_fe_bh); |
534eaddd TY |
441 | kfree(si.name); |
442 | kfree(si.value); | |
ccd979bd | 443 | |
4a12ca3a MF |
444 | ocfs2_free_dir_lookup_result(&lookup); |
445 | ||
f5d36202 TY |
446 | if ((status < 0) && inode) { |
447 | clear_nlink(inode); | |
ccd979bd | 448 | iput(inode); |
f5d36202 | 449 | } |
ccd979bd MF |
450 | |
451 | if (inode_ac) | |
452 | ocfs2_free_alloc_context(inode_ac); | |
453 | ||
454 | if (data_ac) | |
455 | ocfs2_free_alloc_context(data_ac); | |
456 | ||
9b7895ef MF |
457 | if (meta_ac) |
458 | ocfs2_free_alloc_context(meta_ac); | |
534eaddd | 459 | |
ccd979bd MF |
460 | mlog_exit(status); |
461 | ||
462 | return status; | |
463 | } | |
464 | ||
465 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, | |
466 | struct inode *dir, | |
f5d36202 | 467 | struct inode *inode, |
ccd979bd MF |
468 | dev_t dev, |
469 | struct buffer_head **new_fe_bh, | |
470 | struct buffer_head *parent_fe_bh, | |
1fabe148 | 471 | handle_t *handle, |
ccd979bd MF |
472 | struct ocfs2_alloc_context *inode_ac) |
473 | { | |
474 | int status = 0; | |
475 | struct ocfs2_dinode *fe = NULL; | |
476 | struct ocfs2_extent_list *fel; | |
477 | u64 fe_blkno = 0; | |
478 | u16 suballoc_bit; | |
9b7895ef | 479 | u16 feat; |
ccd979bd | 480 | |
ccd979bd | 481 | *new_fe_bh = NULL; |
ccd979bd | 482 | |
13821151 TM |
483 | status = ocfs2_claim_new_inode(osb, handle, dir, parent_fe_bh, |
484 | inode_ac, &suballoc_bit, &fe_blkno); | |
ccd979bd MF |
485 | if (status < 0) { |
486 | mlog_errno(status); | |
487 | goto leave; | |
488 | } | |
489 | ||
ccd979bd MF |
490 | /* populate as many fields early on as possible - many of |
491 | * these are used by the support functions here and in | |
492 | * callers. */ | |
493 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
494 | OCFS2_I(inode)->ip_blkno = fe_blkno; | |
ccd979bd MF |
495 | spin_lock(&osb->osb_lock); |
496 | inode->i_generation = osb->s_next_generation++; | |
497 | spin_unlock(&osb->osb_lock); | |
498 | ||
499 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
500 | if (!*new_fe_bh) { | |
501 | status = -EIO; | |
502 | mlog_errno(status); | |
503 | goto leave; | |
504 | } | |
8cb471e8 | 505 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
ccd979bd | 506 | |
0cf2f763 JB |
507 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
508 | *new_fe_bh, | |
13723d00 | 509 | OCFS2_JOURNAL_ACCESS_CREATE); |
ccd979bd MF |
510 | if (status < 0) { |
511 | mlog_errno(status); | |
512 | goto leave; | |
513 | } | |
514 | ||
515 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
516 | memset(fe, 0, osb->sb->s_blocksize); | |
517 | ||
518 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
519 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
520 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
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 MF |
556 | |
557 | status = ocfs2_journal_dirty(handle, *new_fe_bh); | |
558 | if (status < 0) { | |
559 | mlog_errno(status); | |
560 | goto leave; | |
561 | } | |
562 | ||
b657c95c | 563 | ocfs2_populate_inode(inode, fe, 1); |
0cf2f763 | 564 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
c271c5c2 SM |
565 | if (!ocfs2_mount_local(osb)) { |
566 | status = ocfs2_create_new_inode_locks(inode); | |
567 | if (status < 0) | |
568 | mlog_errno(status); | |
569 | } | |
ccd979bd MF |
570 | |
571 | status = 0; /* error in ocfs2_create_new_inode_locks is not | |
572 | * critical */ | |
573 | ||
ccd979bd MF |
574 | leave: |
575 | if (status < 0) { | |
576 | if (*new_fe_bh) { | |
577 | brelse(*new_fe_bh); | |
578 | *new_fe_bh = NULL; | |
579 | } | |
ccd979bd MF |
580 | } |
581 | ||
582 | mlog_exit(status); | |
583 | return status; | |
584 | } | |
585 | ||
586 | static int ocfs2_mkdir(struct inode *dir, | |
587 | struct dentry *dentry, | |
588 | int mode) | |
589 | { | |
590 | int ret; | |
591 | ||
592 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, | |
593 | dentry->d_name.len, dentry->d_name.name); | |
594 | ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0); | |
595 | mlog_exit(ret); | |
596 | ||
597 | return ret; | |
598 | } | |
599 | ||
600 | static int ocfs2_create(struct inode *dir, | |
601 | struct dentry *dentry, | |
602 | int mode, | |
603 | struct nameidata *nd) | |
604 | { | |
605 | int ret; | |
606 | ||
607 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, | |
608 | dentry->d_name.len, dentry->d_name.name); | |
609 | ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0); | |
610 | mlog_exit(ret); | |
611 | ||
612 | return ret; | |
613 | } | |
614 | ||
615 | static int ocfs2_link(struct dentry *old_dentry, | |
616 | struct inode *dir, | |
617 | struct dentry *dentry) | |
618 | { | |
1fabe148 | 619 | handle_t *handle; |
ccd979bd MF |
620 | struct inode *inode = old_dentry->d_inode; |
621 | int err; | |
622 | struct buffer_head *fe_bh = NULL; | |
623 | struct buffer_head *parent_fe_bh = NULL; | |
ccd979bd MF |
624 | struct ocfs2_dinode *fe = NULL; |
625 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
4a12ca3a | 626 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
627 | |
628 | mlog_entry("(inode=%lu, old='%.*s' new='%.*s')\n", inode->i_ino, | |
629 | old_dentry->d_name.len, old_dentry->d_name.name, | |
630 | dentry->d_name.len, dentry->d_name.name); | |
631 | ||
123a9643 MF |
632 | if (S_ISDIR(inode->i_mode)) |
633 | return -EPERM; | |
ccd979bd | 634 | |
cb25797d | 635 | err = ocfs2_inode_lock_nested(dir, &parent_fe_bh, 1, OI_LS_PARENT); |
ccd979bd MF |
636 | if (err < 0) { |
637 | if (err != -ENOENT) | |
638 | mlog_errno(err); | |
123a9643 | 639 | return err; |
ccd979bd MF |
640 | } |
641 | ||
0f62de2c TY |
642 | if (!dir->i_nlink) { |
643 | err = -ENOENT; | |
123a9643 | 644 | goto out; |
0f62de2c TY |
645 | } |
646 | ||
ccd979bd MF |
647 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
648 | dentry->d_name.len); | |
649 | if (err) | |
123a9643 | 650 | goto out; |
ccd979bd MF |
651 | |
652 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
653 | dentry->d_name.name, | |
4a12ca3a | 654 | dentry->d_name.len, &lookup); |
ccd979bd MF |
655 | if (err < 0) { |
656 | mlog_errno(err); | |
123a9643 | 657 | goto out; |
ccd979bd MF |
658 | } |
659 | ||
e63aecb6 | 660 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
661 | if (err < 0) { |
662 | if (err != -ENOENT) | |
663 | mlog_errno(err); | |
123a9643 | 664 | goto out; |
ccd979bd MF |
665 | } |
666 | ||
667 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
198a1ca3 | 668 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
ccd979bd | 669 | err = -EMLINK; |
123a9643 | 670 | goto out_unlock_inode; |
ccd979bd MF |
671 | } |
672 | ||
a90714c1 | 673 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
674 | if (IS_ERR(handle)) { |
675 | err = PTR_ERR(handle); | |
676 | handle = NULL; | |
677 | mlog_errno(err); | |
123a9643 | 678 | goto out_unlock_inode; |
ccd979bd MF |
679 | } |
680 | ||
0cf2f763 | 681 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 682 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
683 | if (err < 0) { |
684 | mlog_errno(err); | |
123a9643 | 685 | goto out_commit; |
ccd979bd MF |
686 | } |
687 | ||
d8c76e6f | 688 | inc_nlink(inode); |
ccd979bd | 689 | inode->i_ctime = CURRENT_TIME; |
198a1ca3 | 690 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
691 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
692 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
693 | ||
694 | err = ocfs2_journal_dirty(handle, fe_bh); | |
695 | if (err < 0) { | |
198a1ca3 | 696 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 697 | drop_nlink(inode); |
ccd979bd | 698 | mlog_errno(err); |
123a9643 | 699 | goto out_commit; |
ccd979bd MF |
700 | } |
701 | ||
702 | err = ocfs2_add_entry(handle, dentry, inode, | |
703 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 704 | parent_fe_bh, &lookup); |
ccd979bd | 705 | if (err) { |
198a1ca3 | 706 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 707 | drop_nlink(inode); |
ccd979bd | 708 | mlog_errno(err); |
123a9643 | 709 | goto out_commit; |
ccd979bd MF |
710 | } |
711 | ||
0027dd5b | 712 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
713 | if (err) { |
714 | mlog_errno(err); | |
123a9643 | 715 | goto out_commit; |
379dfe9d MF |
716 | } |
717 | ||
ccd979bd MF |
718 | atomic_inc(&inode->i_count); |
719 | dentry->d_op = &ocfs2_dentry_ops; | |
720 | d_instantiate(dentry, inode); | |
123a9643 MF |
721 | |
722 | out_commit: | |
02dc1af4 | 723 | ocfs2_commit_trans(osb, handle); |
123a9643 | 724 | out_unlock_inode: |
e63aecb6 | 725 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
726 | |
727 | out: | |
e63aecb6 | 728 | ocfs2_inode_unlock(dir, 1); |
123a9643 | 729 | |
a81cb88b MF |
730 | brelse(fe_bh); |
731 | brelse(parent_fe_bh); | |
ccd979bd | 732 | |
4a12ca3a MF |
733 | ocfs2_free_dir_lookup_result(&lookup); |
734 | ||
ccd979bd MF |
735 | mlog_exit(err); |
736 | ||
737 | return err; | |
738 | } | |
739 | ||
379dfe9d MF |
740 | /* |
741 | * Takes and drops an exclusive lock on the given dentry. This will | |
742 | * force other nodes to drop it. | |
743 | */ | |
744 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
745 | { | |
746 | int ret; | |
747 | ||
748 | ret = ocfs2_dentry_lock(dentry, 1); | |
749 | if (ret) | |
750 | mlog_errno(ret); | |
751 | else | |
752 | ocfs2_dentry_unlock(dentry, 1); | |
753 | ||
754 | return ret; | |
755 | } | |
756 | ||
17ff7856 MF |
757 | static inline int inode_is_unlinkable(struct inode *inode) |
758 | { | |
759 | if (S_ISDIR(inode->i_mode)) { | |
760 | if (inode->i_nlink == 2) | |
761 | return 1; | |
762 | return 0; | |
763 | } | |
764 | ||
765 | if (inode->i_nlink == 1) | |
766 | return 1; | |
767 | return 0; | |
768 | } | |
769 | ||
ccd979bd MF |
770 | static int ocfs2_unlink(struct inode *dir, |
771 | struct dentry *dentry) | |
772 | { | |
773 | int status; | |
30a4f5e8 | 774 | int child_locked = 0; |
ccd979bd | 775 | struct inode *inode = dentry->d_inode; |
5098c27b | 776 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
777 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
778 | u64 blkno; | |
779 | struct ocfs2_dinode *fe = NULL; | |
780 | struct buffer_head *fe_bh = NULL; | |
781 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 782 | handle_t *handle = NULL; |
ccd979bd | 783 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
784 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
785 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd MF |
786 | |
787 | mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry, | |
788 | dentry->d_name.len, dentry->d_name.name); | |
789 | ||
790 | BUG_ON(dentry->d_parent->d_inode != dir); | |
791 | ||
b0697053 | 792 | mlog(0, "ino = %llu\n", (unsigned long long)OCFS2_I(inode)->ip_blkno); |
ccd979bd MF |
793 | |
794 | if (inode == osb->root_inode) { | |
795 | mlog(0, "Cannot delete the root directory\n"); | |
30a4f5e8 | 796 | return -EPERM; |
ccd979bd MF |
797 | } |
798 | ||
cb25797d JK |
799 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
800 | OI_LS_PARENT); | |
ccd979bd MF |
801 | if (status < 0) { |
802 | if (status != -ENOENT) | |
803 | mlog_errno(status); | |
30a4f5e8 | 804 | return status; |
ccd979bd MF |
805 | } |
806 | ||
807 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
808 | dentry->d_name.len, &blkno, dir, |
809 | &lookup); | |
ccd979bd MF |
810 | if (status < 0) { |
811 | if (status != -ENOENT) | |
812 | mlog_errno(status); | |
813 | goto leave; | |
814 | } | |
815 | ||
816 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
817 | status = -ENOENT; | |
818 | ||
b0697053 MF |
819 | mlog(0, "ip_blkno %llu != dirent blkno %llu ip_flags = %x\n", |
820 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
821 | (unsigned long long)blkno, OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
822 | goto leave; |
823 | } | |
824 | ||
e63aecb6 | 825 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
826 | if (status < 0) { |
827 | if (status != -ENOENT) | |
828 | mlog_errno(status); | |
829 | goto leave; | |
830 | } | |
30a4f5e8 | 831 | child_locked = 1; |
ccd979bd MF |
832 | |
833 | if (S_ISDIR(inode->i_mode)) { | |
b80b549c | 834 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
ccd979bd MF |
835 | status = -ENOTEMPTY; |
836 | goto leave; | |
837 | } | |
838 | } | |
839 | ||
379dfe9d | 840 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 841 | if (status < 0) { |
34d024f8 | 842 | /* This remote delete should succeed under all normal |
ccd979bd MF |
843 | * circumstances. */ |
844 | mlog_errno(status); | |
845 | goto leave; | |
846 | } | |
847 | ||
17ff7856 | 848 | if (inode_is_unlinkable(inode)) { |
19bd341f TM |
849 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
850 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 851 | orphan_name, &orphan_insert); |
ccd979bd MF |
852 | if (status < 0) { |
853 | mlog_errno(status); | |
854 | goto leave; | |
855 | } | |
856 | } | |
857 | ||
a90714c1 | 858 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
859 | if (IS_ERR(handle)) { |
860 | status = PTR_ERR(handle); | |
861 | handle = NULL; | |
862 | mlog_errno(status); | |
863 | goto leave; | |
864 | } | |
865 | ||
0cf2f763 | 866 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 867 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
868 | if (status < 0) { |
869 | mlog_errno(status); | |
870 | goto leave; | |
871 | } | |
872 | ||
873 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
874 | ||
17ff7856 | 875 | if (inode_is_unlinkable(inode)) { |
ccd979bd | 876 | status = ocfs2_orphan_add(osb, handle, inode, fe, orphan_name, |
4a12ca3a | 877 | &orphan_insert, orphan_dir); |
ccd979bd MF |
878 | if (status < 0) { |
879 | mlog_errno(status); | |
880 | goto leave; | |
881 | } | |
882 | } | |
883 | ||
884 | /* delete the name from the parent dir */ | |
4a12ca3a | 885 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
886 | if (status < 0) { |
887 | mlog_errno(status); | |
888 | goto leave; | |
889 | } | |
890 | ||
17ff7856 MF |
891 | if (S_ISDIR(inode->i_mode)) |
892 | drop_nlink(inode); | |
893 | drop_nlink(inode); | |
198a1ca3 | 894 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
895 | |
896 | status = ocfs2_journal_dirty(handle, fe_bh); | |
897 | if (status < 0) { | |
898 | mlog_errno(status); | |
899 | goto leave; | |
900 | } | |
901 | ||
592282cf MF |
902 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; |
903 | if (S_ISDIR(inode->i_mode)) | |
17ff7856 | 904 | drop_nlink(dir); |
592282cf MF |
905 | |
906 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
907 | if (status < 0) { | |
908 | mlog_errno(status); | |
909 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 910 | inc_nlink(dir); |
ccd979bd MF |
911 | } |
912 | ||
913 | leave: | |
ccd979bd | 914 | if (handle) |
02dc1af4 | 915 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 916 | |
30a4f5e8 | 917 | if (child_locked) |
e63aecb6 | 918 | ocfs2_inode_unlock(inode, 1); |
30a4f5e8 | 919 | |
e63aecb6 | 920 | ocfs2_inode_unlock(dir, 1); |
30a4f5e8 | 921 | |
5098c27b MF |
922 | if (orphan_dir) { |
923 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 924 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
925 | mutex_unlock(&orphan_dir->i_mutex); |
926 | iput(orphan_dir); | |
927 | } | |
928 | ||
a81cb88b | 929 | brelse(fe_bh); |
a81cb88b | 930 | brelse(parent_node_bh); |
4a12ca3a MF |
931 | |
932 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
933 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd MF |
934 | |
935 | mlog_exit(status); | |
936 | ||
937 | return status; | |
938 | } | |
939 | ||
940 | /* | |
941 | * The only place this should be used is rename! | |
942 | * if they have the same id, then the 1st one is the only one locked. | |
943 | */ | |
944 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
945 | struct buffer_head **bh1, |
946 | struct inode *inode1, | |
947 | struct buffer_head **bh2, | |
948 | struct inode *inode2) | |
949 | { | |
950 | int status; | |
951 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); | |
952 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
953 | struct buffer_head **tmpbh; | |
954 | struct inode *tmpinode; | |
955 | ||
b0697053 MF |
956 | mlog_entry("(inode1 = %llu, inode2 = %llu)\n", |
957 | (unsigned long long)oi1->ip_blkno, | |
958 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 959 | |
ccd979bd MF |
960 | if (*bh1) |
961 | *bh1 = NULL; | |
962 | if (*bh2) | |
963 | *bh2 = NULL; | |
964 | ||
965 | /* we always want to lock the one with the lower lockid first. */ | |
966 | if (oi1->ip_blkno != oi2->ip_blkno) { | |
967 | if (oi1->ip_blkno < oi2->ip_blkno) { | |
968 | /* switch id1 and id2 around */ | |
969 | mlog(0, "switching them around...\n"); | |
970 | tmpbh = bh2; | |
971 | bh2 = bh1; | |
972 | bh1 = tmpbh; | |
973 | ||
974 | tmpinode = inode2; | |
975 | inode2 = inode1; | |
976 | inode1 = tmpinode; | |
977 | } | |
978 | /* lock id2 */ | |
cb25797d JK |
979 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
980 | OI_LS_RENAME1); | |
ccd979bd MF |
981 | if (status < 0) { |
982 | if (status != -ENOENT) | |
983 | mlog_errno(status); | |
984 | goto bail; | |
985 | } | |
986 | } | |
8d5596c6 | 987 | |
ccd979bd | 988 | /* lock id1 */ |
cb25797d | 989 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, OI_LS_RENAME2); |
ccd979bd | 990 | if (status < 0) { |
8d5596c6 MF |
991 | /* |
992 | * An error return must mean that no cluster locks | |
993 | * were held on function exit. | |
994 | */ | |
995 | if (oi1->ip_blkno != oi2->ip_blkno) | |
e63aecb6 | 996 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 | 997 | |
ccd979bd MF |
998 | if (status != -ENOENT) |
999 | mlog_errno(status); | |
ccd979bd | 1000 | } |
8d5596c6 | 1001 | |
ccd979bd MF |
1002 | bail: |
1003 | mlog_exit(status); | |
1004 | return status; | |
1005 | } | |
1006 | ||
8d5596c6 MF |
1007 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
1008 | { | |
e63aecb6 | 1009 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
1010 | |
1011 | if (inode1 != inode2) | |
e63aecb6 | 1012 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1013 | } |
1014 | ||
ccd979bd MF |
1015 | static int ocfs2_rename(struct inode *old_dir, |
1016 | struct dentry *old_dentry, | |
1017 | struct inode *new_dir, | |
1018 | struct dentry *new_dentry) | |
1019 | { | |
4a12ca3a MF |
1020 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1021 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
ccd979bd MF |
1022 | struct inode *old_inode = old_dentry->d_inode; |
1023 | struct inode *new_inode = new_dentry->d_inode; | |
5098c27b | 1024 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1025 | struct ocfs2_dinode *newfe = NULL; |
1026 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
ccd979bd | 1027 | struct buffer_head *newfe_bh = NULL; |
592282cf | 1028 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd | 1029 | struct ocfs2_super *osb = NULL; |
5b6a3a2b | 1030 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1031 | handle_t *handle = NULL; |
ccd979bd MF |
1032 | struct buffer_head *old_dir_bh = NULL; |
1033 | struct buffer_head *new_dir_bh = NULL; | |
592282cf | 1034 | nlink_t old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1035 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1036 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1037 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1038 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1039 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1040 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
ccd979bd MF |
1041 | |
1042 | /* At some point it might be nice to break this function up a | |
1043 | * bit. */ | |
1044 | ||
1045 | mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p, from='%.*s' to='%.*s')\n", | |
1046 | old_dir, old_dentry, new_dir, new_dentry, | |
1047 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1048 | new_dentry->d_name.len, new_dentry->d_name.name); | |
1049 | ||
1050 | osb = OCFS2_SB(old_dir->i_sb); | |
1051 | ||
1052 | if (new_inode) { | |
1053 | if (!igrab(new_inode)) | |
1054 | BUG(); | |
1055 | } | |
1056 | ||
1b3c3714 | 1057 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1058 | * a/b/c |
1059 | * a/d | |
1060 | * a,b,c, and d are all directories. | |
1061 | * | |
1062 | * from cwd of 'a' on both nodes: | |
1063 | * node1: mv b/c d | |
1064 | * node2: mv d b/c | |
1065 | * | |
1066 | * And that's why, just like the VFS, we need a file system | |
1067 | * rename lock. */ | |
5dabd695 | 1068 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1069 | status = ocfs2_rename_lock(osb); |
1070 | if (status < 0) { | |
1071 | mlog_errno(status); | |
1072 | goto bail; | |
1073 | } | |
1074 | rename_lock = 1; | |
1075 | } | |
1076 | ||
ccd979bd | 1077 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 MF |
1078 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
1079 | &new_dir_bh, new_dir); | |
ccd979bd MF |
1080 | if (status < 0) { |
1081 | mlog_errno(status); | |
1082 | goto bail; | |
1083 | } | |
8d5596c6 | 1084 | parents_locked = 1; |
ccd979bd MF |
1085 | |
1086 | /* make sure both dirs have bhs | |
1087 | * get an extra ref on old_dir_bh if old==new */ | |
1088 | if (!new_dir_bh) { | |
1089 | if (old_dir_bh) { | |
1090 | new_dir_bh = old_dir_bh; | |
1091 | get_bh(new_dir_bh); | |
1092 | } else { | |
1093 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1094 | status = -EIO; | |
1095 | goto bail; | |
1096 | } | |
1097 | } | |
1098 | ||
379dfe9d | 1099 | /* |
592282cf | 1100 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1101 | * also ensures that the downconvert thread on other nodes |
1102 | * won't have to concurrently downconvert the inode and the | |
1103 | * dentry locks. | |
379dfe9d | 1104 | */ |
cb25797d JK |
1105 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
1106 | OI_LS_PARENT); | |
379dfe9d MF |
1107 | if (status < 0) { |
1108 | if (status != -ENOENT) | |
ccd979bd | 1109 | mlog_errno(status); |
379dfe9d MF |
1110 | goto bail; |
1111 | } | |
8d5596c6 | 1112 | old_child_locked = 1; |
ccd979bd | 1113 | |
379dfe9d MF |
1114 | status = ocfs2_remote_dentry_delete(old_dentry); |
1115 | if (status < 0) { | |
1116 | mlog_errno(status); | |
1117 | goto bail; | |
1118 | } | |
1119 | ||
1120 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1121 | u64 old_inode_parent; |
1122 | ||
4a12ca3a | 1123 | update_dot_dot = 1; |
38760e24 | 1124 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1125 | old_inode, |
1126 | &old_inode_dot_dot_res); | |
38760e24 MF |
1127 | if (status) { |
1128 | status = -EIO; | |
ccd979bd | 1129 | goto bail; |
38760e24 | 1130 | } |
ccd979bd | 1131 | |
38760e24 MF |
1132 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1133 | status = -EIO; | |
ccd979bd | 1134 | goto bail; |
38760e24 MF |
1135 | } |
1136 | ||
1137 | if (!new_inode && new_dir != old_dir && | |
198a1ca3 | 1138 | new_dir->i_nlink >= ocfs2_link_max(osb)) { |
38760e24 | 1139 | status = -EMLINK; |
ccd979bd | 1140 | goto bail; |
38760e24 | 1141 | } |
ccd979bd MF |
1142 | } |
1143 | ||
5b6a3a2b MF |
1144 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1145 | old_dentry->d_name.len, | |
1146 | &old_de_ino); | |
1147 | if (status) { | |
1148 | status = -ENOENT; | |
ccd979bd | 1149 | goto bail; |
5b6a3a2b | 1150 | } |
ccd979bd MF |
1151 | |
1152 | /* | |
1153 | * Check for inode number is _not_ due to possible IO errors. | |
1154 | * We might rmdir the source, keep it as pwd of some process | |
1155 | * and merrily kill the link to whatever was created under the | |
1156 | * same name. Goodbye sticky bit ;-< | |
1157 | */ | |
5b6a3a2b MF |
1158 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1159 | status = -ENOENT; | |
ccd979bd | 1160 | goto bail; |
5b6a3a2b | 1161 | } |
ccd979bd MF |
1162 | |
1163 | /* check if the target already exists (in which case we need | |
1164 | * to delete it */ | |
1165 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1166 | new_dentry->d_name.len, | |
4a12ca3a MF |
1167 | &newfe_blkno, new_dir, |
1168 | &target_lookup_res); | |
ccd979bd MF |
1169 | /* The only error we allow here is -ENOENT because the new |
1170 | * file not existing is perfectly valid. */ | |
1171 | if ((status < 0) && (status != -ENOENT)) { | |
1172 | /* If we cannot find the file specified we should just */ | |
1173 | /* return the error... */ | |
1174 | mlog_errno(status); | |
1175 | goto bail; | |
1176 | } | |
4a12ca3a MF |
1177 | if (status == 0) |
1178 | target_exists = 1; | |
ccd979bd | 1179 | |
4a12ca3a | 1180 | if (!target_exists && new_inode) { |
e325a88f SE |
1181 | /* |
1182 | * Target was unlinked by another node while we were | |
1183 | * waiting to get to ocfs2_rename(). There isn't | |
1184 | * anything we can do here to help the situation, so | |
1185 | * bubble up the appropriate error. | |
1186 | */ | |
1187 | status = -ENOENT; | |
1188 | goto bail; | |
1189 | } | |
ccd979bd MF |
1190 | |
1191 | /* In case we need to overwrite an existing file, we blow it | |
1192 | * away first */ | |
4a12ca3a | 1193 | if (target_exists) { |
ccd979bd MF |
1194 | /* VFS didn't think there existed an inode here, but |
1195 | * someone else in the cluster must have raced our | |
1196 | * rename to create one. Today we error cleanly, in | |
1197 | * the future we should consider calling iget to build | |
1198 | * a new struct inode for this entry. */ | |
1199 | if (!new_inode) { | |
1200 | status = -EACCES; | |
1201 | ||
1202 | mlog(0, "We found an inode for name %.*s but VFS " | |
1203 | "didn't give us one.\n", new_dentry->d_name.len, | |
1204 | new_dentry->d_name.name); | |
1205 | goto bail; | |
1206 | } | |
1207 | ||
1208 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1209 | status = -EACCES; | |
1210 | ||
b0697053 MF |
1211 | mlog(0, "Inode %llu and dir %llu disagree. flags = %x\n", |
1212 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, | |
1213 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1214 | OCFS2_I(new_inode)->ip_flags); |
1215 | goto bail; | |
1216 | } | |
1217 | ||
e63aecb6 | 1218 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1219 | if (status < 0) { |
1220 | if (status != -ENOENT) | |
1221 | mlog_errno(status); | |
1222 | goto bail; | |
1223 | } | |
8d5596c6 | 1224 | new_child_locked = 1; |
ccd979bd | 1225 | |
379dfe9d | 1226 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1227 | if (status < 0) { |
1228 | mlog_errno(status); | |
1229 | goto bail; | |
1230 | } | |
1231 | ||
1232 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1233 | ||
4a12ca3a MF |
1234 | mlog(0, "aha rename over existing... new_blkno=%llu " |
1235 | "newfebh=%p bhblocknr=%llu\n", | |
b0697053 | 1236 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1237 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1238 | ||
1239 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1240 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
19bd341f TM |
1241 | OCFS2_I(new_inode)->ip_blkno, |
1242 | orphan_name, &orphan_insert); | |
ccd979bd MF |
1243 | if (status < 0) { |
1244 | mlog_errno(status); | |
1245 | goto bail; | |
1246 | } | |
1247 | } | |
1248 | } else { | |
1249 | BUG_ON(new_dentry->d_parent->d_inode != new_dir); | |
1250 | ||
1251 | status = ocfs2_check_dir_for_entry(new_dir, | |
1252 | new_dentry->d_name.name, | |
1253 | new_dentry->d_name.len); | |
1254 | if (status) | |
1255 | goto bail; | |
1256 | ||
1257 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1258 | new_dentry->d_name.name, | |
1259 | new_dentry->d_name.len, | |
4a12ca3a | 1260 | &target_insert); |
ccd979bd MF |
1261 | if (status < 0) { |
1262 | mlog_errno(status); | |
1263 | goto bail; | |
1264 | } | |
1265 | } | |
1266 | ||
a90714c1 | 1267 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1268 | if (IS_ERR(handle)) { |
1269 | status = PTR_ERR(handle); | |
1270 | handle = NULL; | |
1271 | mlog_errno(status); | |
1272 | goto bail; | |
1273 | } | |
1274 | ||
4a12ca3a | 1275 | if (target_exists) { |
ccd979bd | 1276 | if (S_ISDIR(new_inode->i_mode)) { |
b80b549c MF |
1277 | if (new_inode->i_nlink != 2 || |
1278 | !ocfs2_empty_dir(new_inode)) { | |
ccd979bd MF |
1279 | status = -ENOTEMPTY; |
1280 | goto bail; | |
1281 | } | |
1282 | } | |
0cf2f763 JB |
1283 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
1284 | newfe_bh, | |
13723d00 | 1285 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1286 | if (status < 0) { |
1287 | mlog_errno(status); | |
1288 | goto bail; | |
1289 | } | |
1290 | ||
1291 | if (S_ISDIR(new_inode->i_mode) || | |
198a1ca3 | 1292 | (ocfs2_read_links_count(newfe) == 1)) { |
ccd979bd MF |
1293 | status = ocfs2_orphan_add(osb, handle, new_inode, |
1294 | newfe, orphan_name, | |
4a12ca3a | 1295 | &orphan_insert, orphan_dir); |
ccd979bd MF |
1296 | if (status < 0) { |
1297 | mlog_errno(status); | |
1298 | goto bail; | |
1299 | } | |
1300 | } | |
1301 | ||
1302 | /* change the dirent to point to the correct inode */ | |
4a12ca3a MF |
1303 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1304 | old_inode); | |
ccd979bd MF |
1305 | if (status < 0) { |
1306 | mlog_errno(status); | |
1307 | goto bail; | |
1308 | } | |
ccd979bd | 1309 | new_dir->i_version++; |
ccd979bd MF |
1310 | |
1311 | if (S_ISDIR(new_inode->i_mode)) | |
198a1ca3 | 1312 | ocfs2_set_links_count(newfe, 0); |
ccd979bd | 1313 | else |
198a1ca3 | 1314 | ocfs2_add_links_count(newfe, -1); |
ccd979bd MF |
1315 | |
1316 | status = ocfs2_journal_dirty(handle, newfe_bh); | |
1317 | if (status < 0) { | |
1318 | mlog_errno(status); | |
1319 | goto bail; | |
1320 | } | |
1321 | } else { | |
1322 | /* if the name was not found in new_dir, add it now */ | |
1323 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1324 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1325 | new_dir_bh, &target_insert); |
ccd979bd MF |
1326 | } |
1327 | ||
1328 | old_inode->i_ctime = CURRENT_TIME; | |
1329 | mark_inode_dirty(old_inode); | |
480214d7 | 1330 | |
0cf2f763 JB |
1331 | status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), |
1332 | old_inode_bh, | |
13723d00 | 1333 | OCFS2_JOURNAL_ACCESS_WRITE); |
480214d7 SM |
1334 | if (status >= 0) { |
1335 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1336 | ||
1337 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); | |
1338 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); | |
1339 | ||
1340 | status = ocfs2_journal_dirty(handle, old_inode_bh); | |
1341 | if (status < 0) | |
1342 | mlog_errno(status); | |
1343 | } else | |
1344 | mlog_errno(status); | |
ccd979bd | 1345 | |
5b6a3a2b MF |
1346 | /* |
1347 | * Now that the name has been added to new_dir, remove the old name. | |
1348 | * | |
1349 | * We don't keep any directory entry context around until now | |
1350 | * because the insert might have changed the type of directory | |
1351 | * we're dealing with. | |
1352 | */ | |
4a12ca3a MF |
1353 | status = ocfs2_find_entry(old_dentry->d_name.name, |
1354 | old_dentry->d_name.len, old_dir, | |
1355 | &old_entry_lookup); | |
1356 | if (status) | |
5b6a3a2b | 1357 | goto bail; |
5b6a3a2b | 1358 | |
4a12ca3a | 1359 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
ccd979bd MF |
1360 | if (status < 0) { |
1361 | mlog_errno(status); | |
1362 | goto bail; | |
1363 | } | |
1364 | ||
1365 | if (new_inode) { | |
1366 | new_inode->i_nlink--; | |
1367 | new_inode->i_ctime = CURRENT_TIME; | |
1368 | } | |
1369 | old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME; | |
4a12ca3a MF |
1370 | |
1371 | if (update_dot_dot) { | |
1372 | status = ocfs2_update_entry(old_inode, handle, | |
1373 | &old_inode_dot_dot_res, new_dir); | |
ccd979bd MF |
1374 | old_dir->i_nlink--; |
1375 | if (new_inode) { | |
1376 | new_inode->i_nlink--; | |
1377 | } else { | |
d8c76e6f | 1378 | inc_nlink(new_dir); |
ccd979bd MF |
1379 | mark_inode_dirty(new_dir); |
1380 | } | |
1381 | } | |
1382 | mark_inode_dirty(old_dir); | |
592282cf MF |
1383 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1384 | if (new_inode) { | |
ccd979bd | 1385 | mark_inode_dirty(new_inode); |
592282cf MF |
1386 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1387 | } | |
ccd979bd | 1388 | |
592282cf MF |
1389 | if (old_dir != new_dir) { |
1390 | /* Keep the same times on both directories.*/ | |
1391 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; | |
1392 | ||
1393 | /* | |
1394 | * This will also pick up the i_nlink change from the | |
1395 | * block above. | |
1396 | */ | |
1397 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1398 | } | |
ccd979bd MF |
1399 | |
1400 | if (old_dir_nlink != old_dir->i_nlink) { | |
1401 | if (!old_dir_bh) { | |
1402 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1403 | "%llu from %d to %d but bh is NULL!\n", |
1404 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1405 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1406 | } else { |
1407 | struct ocfs2_dinode *fe; | |
0cf2f763 JB |
1408 | status = ocfs2_journal_access_di(handle, |
1409 | INODE_CACHE(old_dir), | |
1410 | old_dir_bh, | |
1411 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd | 1412 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
198a1ca3 | 1413 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
ccd979bd MF |
1414 | status = ocfs2_journal_dirty(handle, old_dir_bh); |
1415 | } | |
1416 | } | |
379dfe9d | 1417 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1418 | status = 0; |
1419 | bail: | |
1420 | if (rename_lock) | |
1421 | ocfs2_rename_unlock(osb); | |
1422 | ||
1423 | if (handle) | |
02dc1af4 | 1424 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1425 | |
8d5596c6 MF |
1426 | if (parents_locked) |
1427 | ocfs2_double_unlock(old_dir, new_dir); | |
1428 | ||
1429 | if (old_child_locked) | |
e63aecb6 | 1430 | ocfs2_inode_unlock(old_inode, 1); |
8d5596c6 MF |
1431 | |
1432 | if (new_child_locked) | |
e63aecb6 | 1433 | ocfs2_inode_unlock(new_inode, 1); |
8d5596c6 | 1434 | |
5098c27b MF |
1435 | if (orphan_dir) { |
1436 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1437 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
1438 | mutex_unlock(&orphan_dir->i_mutex); |
1439 | iput(orphan_dir); | |
1440 | } | |
1441 | ||
ccd979bd MF |
1442 | if (new_inode) |
1443 | sync_mapping_buffers(old_inode->i_mapping); | |
1444 | ||
1445 | if (new_inode) | |
1446 | iput(new_inode); | |
4a12ca3a MF |
1447 | |
1448 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1449 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1450 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1451 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1452 | ocfs2_free_dir_lookup_result(&target_insert); | |
1453 | ||
a81cb88b MF |
1454 | brelse(newfe_bh); |
1455 | brelse(old_inode_bh); | |
1456 | brelse(old_dir_bh); | |
1457 | brelse(new_dir_bh); | |
ccd979bd MF |
1458 | |
1459 | mlog_exit(status); | |
1460 | ||
1461 | return status; | |
1462 | } | |
1463 | ||
1464 | /* | |
1465 | * we expect i_size = strlen(symname). Copy symname into the file | |
1466 | * data, including the null terminator. | |
1467 | */ | |
1468 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1469 | handle_t *handle, |
ccd979bd MF |
1470 | struct inode *inode, |
1471 | const char *symname) | |
1472 | { | |
1473 | struct buffer_head **bhs = NULL; | |
1474 | const char *c; | |
1475 | struct super_block *sb = osb->sb; | |
4f902c37 | 1476 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1477 | int virtual, blocks, status, i, bytes_left; |
1478 | ||
1479 | bytes_left = i_size_read(inode) + 1; | |
1480 | /* we can't trust i_blocks because we're actually going to | |
1481 | * write i_size + 1 bytes. */ | |
1482 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1483 | ||
5515eff8 AM |
1484 | mlog_entry("i_blocks = %llu, i_size = %llu, blocks = %d\n", |
1485 | (unsigned long long)inode->i_blocks, | |
1486 | i_size_read(inode), blocks); | |
ccd979bd MF |
1487 | |
1488 | /* Sanity check -- make sure we're going to fit. */ | |
1489 | if (bytes_left > | |
1490 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1491 | status = -EIO; | |
1492 | mlog_errno(status); | |
1493 | goto bail; | |
1494 | } | |
1495 | ||
1496 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1497 | if (!bhs) { | |
1498 | status = -ENOMEM; | |
1499 | mlog_errno(status); | |
1500 | goto bail; | |
1501 | } | |
1502 | ||
49cb8d2d MF |
1503 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1504 | NULL); | |
ccd979bd MF |
1505 | if (status < 0) { |
1506 | mlog_errno(status); | |
1507 | goto bail; | |
1508 | } | |
1509 | ||
1510 | /* links can never be larger than one cluster so we know this | |
1511 | * is all going to be contiguous, but do a sanity check | |
1512 | * anyway. */ | |
1513 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1514 | status = -EIO; | |
1515 | mlog_errno(status); | |
1516 | goto bail; | |
1517 | } | |
1518 | ||
1519 | virtual = 0; | |
1520 | while(bytes_left > 0) { | |
1521 | c = &symname[virtual * sb->s_blocksize]; | |
1522 | ||
1523 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1524 | if (!bhs[virtual]) { | |
1525 | status = -ENOMEM; | |
1526 | mlog_errno(status); | |
1527 | goto bail; | |
1528 | } | |
8cb471e8 JB |
1529 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
1530 | bhs[virtual]); | |
ccd979bd | 1531 | |
0cf2f763 JB |
1532 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
1533 | bhs[virtual], | |
ccd979bd MF |
1534 | OCFS2_JOURNAL_ACCESS_CREATE); |
1535 | if (status < 0) { | |
1536 | mlog_errno(status); | |
1537 | goto bail; | |
1538 | } | |
1539 | ||
1540 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1541 | ||
1542 | memcpy(bhs[virtual]->b_data, c, | |
1543 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1544 | bytes_left); | |
1545 | ||
1546 | status = ocfs2_journal_dirty(handle, bhs[virtual]); | |
1547 | if (status < 0) { | |
1548 | mlog_errno(status); | |
1549 | goto bail; | |
1550 | } | |
1551 | ||
1552 | virtual++; | |
1553 | p_blkno++; | |
1554 | bytes_left -= sb->s_blocksize; | |
1555 | } | |
1556 | ||
1557 | status = 0; | |
1558 | bail: | |
1559 | ||
1560 | if (bhs) { | |
1561 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1562 | brelse(bhs[i]); |
ccd979bd MF |
1563 | kfree(bhs); |
1564 | } | |
1565 | ||
1566 | mlog_exit(status); | |
1567 | return status; | |
1568 | } | |
1569 | ||
1570 | static int ocfs2_symlink(struct inode *dir, | |
1571 | struct dentry *dentry, | |
1572 | const char *symname) | |
1573 | { | |
1574 | int status, l, credits; | |
1575 | u64 newsize; | |
1576 | struct ocfs2_super *osb = NULL; | |
1577 | struct inode *inode = NULL; | |
1578 | struct super_block *sb; | |
1579 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1580 | struct buffer_head *parent_fe_bh = NULL; |
1581 | struct ocfs2_dinode *fe = NULL; | |
1582 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1583 | handle_t *handle = NULL; |
ccd979bd MF |
1584 | struct ocfs2_alloc_context *inode_ac = NULL; |
1585 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1586 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1587 | int want_clusters = 0; | |
1588 | int xattr_credits = 0; | |
1589 | struct ocfs2_security_xattr_info si = { | |
1590 | .enable = 1, | |
1591 | }; | |
a90714c1 | 1592 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1593 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
1594 | |
1595 | mlog_entry("(0x%p, 0x%p, symname='%s' actual='%.*s')\n", dir, | |
1596 | dentry, symname, dentry->d_name.len, dentry->d_name.name); | |
1597 | ||
1598 | sb = dir->i_sb; | |
1599 | osb = OCFS2_SB(sb); | |
1600 | ||
1601 | l = strlen(symname) + 1; | |
1602 | ||
1603 | credits = ocfs2_calc_symlink_credits(sb); | |
1604 | ||
ccd979bd | 1605 | /* lock the parent directory */ |
e63aecb6 | 1606 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1607 | if (status < 0) { |
1608 | if (status != -ENOENT) | |
1609 | mlog_errno(status); | |
6d8fc40e | 1610 | return status; |
ccd979bd MF |
1611 | } |
1612 | ||
1613 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
198a1ca3 | 1614 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
1615 | /* can't make a file in a deleted directory. */ |
1616 | status = -ENOENT; | |
1617 | goto bail; | |
1618 | } | |
1619 | ||
1620 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1621 | dentry->d_name.len); | |
1622 | if (status) | |
1623 | goto bail; | |
1624 | ||
1625 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1626 | dentry->d_name.name, | |
4a12ca3a | 1627 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1628 | if (status < 0) { |
1629 | mlog_errno(status); | |
1630 | goto bail; | |
1631 | } | |
1632 | ||
da5cbf2f | 1633 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1634 | if (status < 0) { |
1635 | if (status != -ENOSPC) | |
1636 | mlog_errno(status); | |
1637 | goto bail; | |
1638 | } | |
1639 | ||
f5d36202 TY |
1640 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
1641 | if (!inode) { | |
1642 | status = -ENOMEM; | |
1643 | mlog_errno(status); | |
1644 | goto bail; | |
1645 | } | |
1646 | ||
534eaddd TY |
1647 | /* get security xattr */ |
1648 | status = ocfs2_init_security_get(inode, dir, &si); | |
1649 | if (status) { | |
1650 | if (status == -EOPNOTSUPP) | |
1651 | si.enable = 0; | |
1652 | else { | |
1653 | mlog_errno(status); | |
1654 | goto bail; | |
1655 | } | |
1656 | } | |
1657 | ||
1658 | /* calculate meta data/clusters for setting security xattr */ | |
1659 | if (si.enable) { | |
1660 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1661 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1662 | if (status < 0) { |
534eaddd | 1663 | mlog_errno(status); |
ccd979bd MF |
1664 | goto bail; |
1665 | } | |
1666 | } | |
1667 | ||
534eaddd TY |
1668 | /* don't reserve bitmap space for fast symlinks. */ |
1669 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1670 | want_clusters += 1; | |
1671 | ||
1672 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1673 | if (status < 0) { | |
1674 | if (status != -ENOSPC) | |
1675 | mlog_errno(status); | |
1676 | goto bail; | |
1677 | } | |
1678 | ||
1679 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1680 | if (IS_ERR(handle)) { |
1681 | status = PTR_ERR(handle); | |
1682 | handle = NULL; | |
1683 | mlog_errno(status); | |
1684 | goto bail; | |
1685 | } | |
1686 | ||
63936dda CH |
1687 | status = dquot_alloc_inode(inode); |
1688 | if (status) | |
a90714c1 | 1689 | goto bail; |
a90714c1 JK |
1690 | did_quota_inode = 1; |
1691 | ||
19bd341f TM |
1692 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, |
1693 | inode->i_mode, dentry->d_name.len, | |
1694 | dentry->d_name.name); | |
1695 | ||
1696 | status = ocfs2_mknod_locked(osb, dir, inode, | |
f5d36202 TY |
1697 | 0, &new_fe_bh, parent_fe_bh, handle, |
1698 | inode_ac); | |
ccd979bd MF |
1699 | if (status < 0) { |
1700 | mlog_errno(status); | |
1701 | goto bail; | |
1702 | } | |
1703 | ||
1704 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1705 | inode->i_rdev = 0; | |
1706 | newsize = l - 1; | |
1707 | if (l > ocfs2_fast_symlink_chars(sb)) { | |
dcd0538f MF |
1708 | u32 offset = 0; |
1709 | ||
ccd979bd | 1710 | inode->i_op = &ocfs2_symlink_inode_operations; |
5dd4056d CH |
1711 | status = dquot_alloc_space_nodirty(inode, |
1712 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1713 | if (status) | |
a90714c1 | 1714 | goto bail; |
a90714c1 | 1715 | did_quota = 1; |
0eb8d47e TM |
1716 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1717 | new_fe_bh, | |
1718 | handle, data_ac, NULL, | |
1719 | NULL); | |
ccd979bd MF |
1720 | if (status < 0) { |
1721 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1722 | mlog(ML_ERROR, |
1723 | "Failed to extend file to %llu\n", | |
1724 | (unsigned long long)newsize); | |
ccd979bd MF |
1725 | mlog_errno(status); |
1726 | status = -ENOSPC; | |
1727 | } | |
1728 | goto bail; | |
1729 | } | |
1730 | i_size_write(inode, newsize); | |
8110b073 | 1731 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd MF |
1732 | } else { |
1733 | inode->i_op = &ocfs2_fast_symlink_inode_operations; | |
1734 | memcpy((char *) fe->id2.i_symlink, symname, l); | |
1735 | i_size_write(inode, newsize); | |
1736 | inode->i_blocks = 0; | |
1737 | } | |
1738 | ||
1739 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1740 | if (status < 0) { | |
1741 | mlog_errno(status); | |
1742 | goto bail; | |
1743 | } | |
1744 | ||
1745 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
1746 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
1747 | symname); | |
1748 | if (status < 0) { | |
1749 | mlog_errno(status); | |
1750 | goto bail; | |
1751 | } | |
1752 | } | |
1753 | ||
534eaddd TY |
1754 | if (si.enable) { |
1755 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
1756 | xattr_ac, data_ac); | |
1757 | if (status < 0) { | |
1758 | mlog_errno(status); | |
1759 | goto bail; | |
1760 | } | |
1761 | } | |
1762 | ||
ccd979bd MF |
1763 | status = ocfs2_add_entry(handle, dentry, inode, |
1764 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
4a12ca3a | 1765 | &lookup); |
ccd979bd MF |
1766 | if (status < 0) { |
1767 | mlog_errno(status); | |
1768 | goto bail; | |
1769 | } | |
1770 | ||
0027dd5b | 1771 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
1772 | if (status) { |
1773 | mlog_errno(status); | |
1774 | goto bail; | |
1775 | } | |
1776 | ||
ccd979bd MF |
1777 | insert_inode_hash(inode); |
1778 | dentry->d_op = &ocfs2_dentry_ops; | |
1779 | d_instantiate(dentry, inode); | |
1780 | bail: | |
a90714c1 | 1781 | if (status < 0 && did_quota) |
5dd4056d | 1782 | dquot_free_space_nodirty(inode, |
a90714c1 JK |
1783 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
1784 | if (status < 0 && did_quota_inode) | |
63936dda | 1785 | dquot_free_inode(inode); |
ccd979bd | 1786 | if (handle) |
02dc1af4 | 1787 | ocfs2_commit_trans(osb, handle); |
6d8fc40e | 1788 | |
e63aecb6 | 1789 | ocfs2_inode_unlock(dir, 1); |
6d8fc40e | 1790 | |
a81cb88b MF |
1791 | brelse(new_fe_bh); |
1792 | brelse(parent_fe_bh); | |
534eaddd TY |
1793 | kfree(si.name); |
1794 | kfree(si.value); | |
4a12ca3a | 1795 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
1796 | if (inode_ac) |
1797 | ocfs2_free_alloc_context(inode_ac); | |
1798 | if (data_ac) | |
1799 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
1800 | if (xattr_ac) |
1801 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 TY |
1802 | if ((status < 0) && inode) { |
1803 | clear_nlink(inode); | |
ccd979bd | 1804 | iput(inode); |
f5d36202 | 1805 | } |
ccd979bd MF |
1806 | |
1807 | mlog_exit(status); | |
1808 | ||
1809 | return status; | |
1810 | } | |
1811 | ||
ccd979bd MF |
1812 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
1813 | { | |
1814 | int status, namelen; | |
1815 | ||
1816 | mlog_entry_void(); | |
1817 | ||
b0697053 MF |
1818 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
1819 | (long long)blkno); | |
ccd979bd MF |
1820 | if (namelen <= 0) { |
1821 | if (namelen) | |
1822 | status = namelen; | |
1823 | else | |
1824 | status = -EINVAL; | |
1825 | mlog_errno(status); | |
1826 | goto bail; | |
1827 | } | |
1828 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
1829 | status = -EINVAL; | |
1830 | mlog_errno(status); | |
1831 | goto bail; | |
1832 | } | |
1833 | ||
1834 | mlog(0, "built filename '%s' for orphan dir (len=%d)\n", name, | |
1835 | namelen); | |
1836 | ||
1837 | status = 0; | |
1838 | bail: | |
1839 | mlog_exit(status); | |
1840 | return status; | |
1841 | } | |
1842 | ||
1843 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
5098c27b | 1844 | struct inode **ret_orphan_dir, |
19bd341f | 1845 | u64 blkno, |
ccd979bd | 1846 | char *name, |
4a12ca3a | 1847 | struct ocfs2_dir_lookup_result *lookup) |
ccd979bd | 1848 | { |
5098c27b | 1849 | struct inode *orphan_dir_inode; |
ccd979bd MF |
1850 | struct buffer_head *orphan_dir_bh = NULL; |
1851 | int status = 0; | |
1852 | ||
19bd341f | 1853 | status = ocfs2_blkno_stringify(blkno, name); |
ccd979bd MF |
1854 | if (status < 0) { |
1855 | mlog_errno(status); | |
5098c27b | 1856 | return status; |
ccd979bd MF |
1857 | } |
1858 | ||
1859 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
1860 | ORPHAN_DIR_SYSTEM_INODE, | |
1861 | osb->slot_num); | |
1862 | if (!orphan_dir_inode) { | |
1863 | status = -ENOENT; | |
1864 | mlog_errno(status); | |
5098c27b | 1865 | return status; |
ccd979bd MF |
1866 | } |
1867 | ||
5098c27b MF |
1868 | mutex_lock(&orphan_dir_inode->i_mutex); |
1869 | ||
e63aecb6 | 1870 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
ccd979bd MF |
1871 | if (status < 0) { |
1872 | mlog_errno(status); | |
1873 | goto leave; | |
1874 | } | |
1875 | ||
1876 | status = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
1877 | orphan_dir_bh, name, | |
4a12ca3a | 1878 | OCFS2_ORPHAN_NAMELEN, lookup); |
ccd979bd | 1879 | if (status < 0) { |
e63aecb6 | 1880 | ocfs2_inode_unlock(orphan_dir_inode, 1); |
5098c27b | 1881 | |
ccd979bd MF |
1882 | mlog_errno(status); |
1883 | goto leave; | |
1884 | } | |
1885 | ||
5098c27b MF |
1886 | *ret_orphan_dir = orphan_dir_inode; |
1887 | ||
ccd979bd | 1888 | leave: |
5098c27b MF |
1889 | if (status) { |
1890 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
ccd979bd | 1891 | iput(orphan_dir_inode); |
5098c27b | 1892 | } |
ccd979bd | 1893 | |
a81cb88b | 1894 | brelse(orphan_dir_bh); |
ccd979bd MF |
1895 | |
1896 | mlog_exit(status); | |
1897 | return status; | |
1898 | } | |
1899 | ||
1900 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 1901 | handle_t *handle, |
ccd979bd MF |
1902 | struct inode *inode, |
1903 | struct ocfs2_dinode *fe, | |
1904 | char *name, | |
4a12ca3a | 1905 | struct ocfs2_dir_lookup_result *lookup, |
5098c27b | 1906 | struct inode *orphan_dir_inode) |
ccd979bd | 1907 | { |
ccd979bd MF |
1908 | struct buffer_head *orphan_dir_bh = NULL; |
1909 | int status = 0; | |
1910 | struct ocfs2_dinode *orphan_fe; | |
1911 | ||
1912 | mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino); | |
1913 | ||
b657c95c | 1914 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
1915 | if (status < 0) { |
1916 | mlog_errno(status); | |
1917 | goto leave; | |
1918 | } | |
1919 | ||
0cf2f763 JB |
1920 | status = ocfs2_journal_access_di(handle, |
1921 | INODE_CACHE(orphan_dir_inode), | |
1922 | orphan_dir_bh, | |
13723d00 | 1923 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1924 | if (status < 0) { |
1925 | mlog_errno(status); | |
1926 | goto leave; | |
1927 | } | |
1928 | ||
1929 | /* we're a cluster, and nlink can change on disk from | |
1930 | * underneath us... */ | |
1931 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
1932 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 MF |
1933 | ocfs2_add_links_count(orphan_fe, 1); |
1934 | orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe); | |
ccd979bd MF |
1935 | |
1936 | status = ocfs2_journal_dirty(handle, orphan_dir_bh); | |
1937 | if (status < 0) { | |
1938 | mlog_errno(status); | |
1939 | goto leave; | |
1940 | } | |
1941 | ||
1942 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
1943 | OCFS2_ORPHAN_NAMELEN, inode, | |
1944 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 1945 | orphan_dir_bh, lookup); |
ccd979bd MF |
1946 | if (status < 0) { |
1947 | mlog_errno(status); | |
1948 | goto leave; | |
1949 | } | |
1950 | ||
1951 | le32_add_cpu(&fe->i_flags, OCFS2_ORPHANED_FL); | |
1952 | ||
1953 | /* Record which orphan dir our inode now resides | |
1954 | * in. delete_inode will use this to determine which orphan | |
1955 | * dir to lock. */ | |
50008630 | 1956 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); |
ccd979bd | 1957 | |
b0697053 MF |
1958 | mlog(0, "Inode %llu orphaned in slot %d\n", |
1959 | (unsigned long long)OCFS2_I(inode)->ip_blkno, osb->slot_num); | |
ccd979bd MF |
1960 | |
1961 | leave: | |
a81cb88b | 1962 | brelse(orphan_dir_bh); |
ccd979bd MF |
1963 | |
1964 | mlog_exit(status); | |
1965 | return status; | |
1966 | } | |
1967 | ||
1968 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
1969 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 1970 | handle_t *handle, |
ccd979bd MF |
1971 | struct inode *orphan_dir_inode, |
1972 | struct inode *inode, | |
1973 | struct buffer_head *orphan_dir_bh) | |
1974 | { | |
1975 | char name[OCFS2_ORPHAN_NAMELEN + 1]; | |
1976 | struct ocfs2_dinode *orphan_fe; | |
1977 | int status = 0; | |
4a12ca3a | 1978 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
1979 | |
1980 | mlog_entry_void(); | |
1981 | ||
1982 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
1983 | if (status < 0) { | |
1984 | mlog_errno(status); | |
1985 | goto leave; | |
1986 | } | |
1987 | ||
b0697053 MF |
1988 | mlog(0, "removing '%s' from orphan dir %llu (namelen=%d)\n", |
1989 | name, (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
1990 | OCFS2_ORPHAN_NAMELEN); | |
ccd979bd MF |
1991 | |
1992 | /* find it's spot in the orphan directory */ | |
4a12ca3a MF |
1993 | status = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, orphan_dir_inode, |
1994 | &lookup); | |
1995 | if (status) { | |
ccd979bd MF |
1996 | mlog_errno(status); |
1997 | goto leave; | |
1998 | } | |
1999 | ||
2000 | /* remove it from the orphan directory */ | |
4a12ca3a | 2001 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
2002 | if (status < 0) { |
2003 | mlog_errno(status); | |
2004 | goto leave; | |
2005 | } | |
2006 | ||
0cf2f763 JB |
2007 | status = ocfs2_journal_access_di(handle, |
2008 | INODE_CACHE(orphan_dir_inode), | |
2009 | orphan_dir_bh, | |
13723d00 | 2010 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2011 | if (status < 0) { |
2012 | mlog_errno(status); | |
2013 | goto leave; | |
2014 | } | |
2015 | ||
2016 | /* do the i_nlink dance! :) */ | |
2017 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2018 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 MF |
2019 | ocfs2_add_links_count(orphan_fe, -1); |
2020 | orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe); | |
ccd979bd MF |
2021 | |
2022 | status = ocfs2_journal_dirty(handle, orphan_dir_bh); | |
2023 | if (status < 0) { | |
2024 | mlog_errno(status); | |
2025 | goto leave; | |
2026 | } | |
2027 | ||
2028 | leave: | |
4a12ca3a | 2029 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
2030 | |
2031 | mlog_exit(status); | |
2032 | return status; | |
2033 | } | |
2034 | ||
bc13d347 TM |
2035 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
2036 | int mode, | |
2037 | struct inode **new_inode) | |
2038 | { | |
2039 | int status, did_quota_inode = 0; | |
2040 | struct inode *inode = NULL; | |
2041 | struct inode *orphan_dir = NULL; | |
2042 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2043 | struct ocfs2_dinode *di = NULL; | |
2044 | handle_t *handle = NULL; | |
2045 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2046 | struct buffer_head *parent_di_bh = NULL; | |
2047 | struct buffer_head *new_di_bh = NULL; | |
2048 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2049 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
2050 | ||
2051 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2052 | if (status < 0) { | |
2053 | if (status != -ENOENT) | |
2054 | mlog_errno(status); | |
2055 | return status; | |
2056 | } | |
2057 | ||
2058 | /* | |
2059 | * We give the orphan dir the root blkno to fake an orphan name, | |
2060 | * and allocate enough space for our insertion. | |
2061 | */ | |
2062 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, | |
2063 | osb->root_blkno, | |
2064 | orphan_name, &orphan_insert); | |
2065 | if (status < 0) { | |
2066 | mlog_errno(status); | |
2067 | goto leave; | |
2068 | } | |
2069 | ||
2070 | /* reserve an inode spot */ | |
2071 | status = ocfs2_reserve_new_inode(osb, &inode_ac); | |
2072 | if (status < 0) { | |
2073 | if (status != -ENOSPC) | |
2074 | mlog_errno(status); | |
2075 | goto leave; | |
2076 | } | |
2077 | ||
2078 | inode = ocfs2_get_init_inode(dir, mode); | |
2079 | if (!inode) { | |
2080 | status = -ENOMEM; | |
2081 | mlog_errno(status); | |
2082 | goto leave; | |
2083 | } | |
2084 | ||
2085 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); | |
2086 | if (IS_ERR(handle)) { | |
2087 | status = PTR_ERR(handle); | |
2088 | handle = NULL; | |
2089 | mlog_errno(status); | |
2090 | goto leave; | |
2091 | } | |
2092 | ||
63936dda CH |
2093 | status = dquot_alloc_inode(inode); |
2094 | if (status) | |
bc13d347 | 2095 | goto leave; |
bc13d347 TM |
2096 | did_quota_inode = 1; |
2097 | ||
10cf1a02 | 2098 | inode->i_nlink = 0; |
bc13d347 TM |
2099 | /* do the real work now. */ |
2100 | status = ocfs2_mknod_locked(osb, dir, inode, | |
2101 | 0, &new_di_bh, parent_di_bh, handle, | |
2102 | inode_ac); | |
2103 | if (status < 0) { | |
2104 | mlog_errno(status); | |
2105 | goto leave; | |
2106 | } | |
2107 | ||
2108 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, orphan_name); | |
2109 | if (status < 0) { | |
2110 | mlog_errno(status); | |
2111 | goto leave; | |
2112 | } | |
2113 | ||
2114 | di = (struct ocfs2_dinode *)new_di_bh->b_data; | |
2115 | status = ocfs2_orphan_add(osb, handle, inode, di, orphan_name, | |
2116 | &orphan_insert, orphan_dir); | |
2117 | if (status < 0) { | |
2118 | mlog_errno(status); | |
2119 | goto leave; | |
2120 | } | |
2121 | ||
2122 | /* get open lock so that only nodes can't remove it from orphan dir. */ | |
2123 | status = ocfs2_open_lock(inode); | |
2124 | if (status < 0) | |
2125 | mlog_errno(status); | |
2126 | ||
c7d260af | 2127 | insert_inode_hash(inode); |
bc13d347 TM |
2128 | leave: |
2129 | if (status < 0 && did_quota_inode) | |
63936dda | 2130 | dquot_free_inode(inode); |
bc13d347 TM |
2131 | if (handle) |
2132 | ocfs2_commit_trans(osb, handle); | |
2133 | ||
2134 | if (orphan_dir) { | |
2135 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
2136 | ocfs2_inode_unlock(orphan_dir, 1); | |
2137 | mutex_unlock(&orphan_dir->i_mutex); | |
2138 | iput(orphan_dir); | |
2139 | } | |
2140 | ||
2141 | if (status == -ENOSPC) | |
2142 | mlog(0, "Disk is full\n"); | |
2143 | ||
2144 | if ((status < 0) && inode) { | |
2145 | clear_nlink(inode); | |
2146 | iput(inode); | |
2147 | } | |
2148 | ||
2149 | if (inode_ac) | |
2150 | ocfs2_free_alloc_context(inode_ac); | |
2151 | ||
2152 | brelse(new_di_bh); | |
2153 | ||
2154 | if (!status) | |
2155 | *new_inode = inode; | |
2156 | ||
2157 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2158 | ||
2159 | ocfs2_inode_unlock(dir, 1); | |
2160 | brelse(parent_di_bh); | |
2161 | return status; | |
2162 | } | |
2163 | ||
2164 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, | |
2165 | struct inode *inode, | |
2166 | struct dentry *dentry) | |
2167 | { | |
2168 | int status = 0; | |
2169 | struct buffer_head *parent_di_bh = NULL; | |
2170 | handle_t *handle = NULL; | |
2171 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2172 | struct ocfs2_dinode *dir_di, *di; | |
2173 | struct inode *orphan_dir_inode = NULL; | |
2174 | struct buffer_head *orphan_dir_bh = NULL; | |
2175 | struct buffer_head *di_bh = NULL; | |
2176 | struct ocfs2_dir_lookup_result lookup = { NULL, }; | |
2177 | ||
2178 | mlog_entry("(0x%p, 0x%p, %.*s')\n", dir, dentry, | |
2179 | dentry->d_name.len, dentry->d_name.name); | |
2180 | ||
2181 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2182 | if (status < 0) { | |
2183 | if (status != -ENOENT) | |
2184 | mlog_errno(status); | |
2185 | return status; | |
2186 | } | |
2187 | ||
2188 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; | |
2189 | if (!dir_di->i_links_count) { | |
2190 | /* can't make a file in a deleted directory. */ | |
2191 | status = -ENOENT; | |
2192 | goto leave; | |
2193 | } | |
2194 | ||
2195 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
2196 | dentry->d_name.len); | |
2197 | if (status) | |
2198 | goto leave; | |
2199 | ||
2200 | /* get a spot inside the dir. */ | |
2201 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, | |
2202 | dentry->d_name.name, | |
2203 | dentry->d_name.len, &lookup); | |
2204 | if (status < 0) { | |
2205 | mlog_errno(status); | |
2206 | goto leave; | |
2207 | } | |
2208 | ||
2209 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2210 | ORPHAN_DIR_SYSTEM_INODE, | |
2211 | osb->slot_num); | |
2212 | if (!orphan_dir_inode) { | |
2213 | status = -EEXIST; | |
2214 | mlog_errno(status); | |
2215 | goto leave; | |
2216 | } | |
2217 | ||
2218 | mutex_lock(&orphan_dir_inode->i_mutex); | |
2219 | ||
2220 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2221 | if (status < 0) { | |
2222 | mlog_errno(status); | |
2223 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2224 | iput(orphan_dir_inode); | |
2225 | goto leave; | |
2226 | } | |
2227 | ||
2228 | status = ocfs2_read_inode_block(inode, &di_bh); | |
2229 | if (status < 0) { | |
2230 | mlog_errno(status); | |
2231 | goto orphan_unlock; | |
2232 | } | |
2233 | ||
2234 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); | |
2235 | if (IS_ERR(handle)) { | |
2236 | status = PTR_ERR(handle); | |
2237 | handle = NULL; | |
2238 | mlog_errno(status); | |
2239 | goto orphan_unlock; | |
2240 | } | |
2241 | ||
2242 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), | |
2243 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2244 | if (status < 0) { | |
2245 | mlog_errno(status); | |
2246 | goto out_commit; | |
2247 | } | |
2248 | ||
2249 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
2250 | orphan_dir_bh); | |
2251 | if (status < 0) { | |
2252 | mlog_errno(status); | |
2253 | goto out_commit; | |
2254 | } | |
2255 | ||
2256 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
2257 | le32_add_cpu(&di->i_flags, -OCFS2_ORPHANED_FL); | |
2258 | di->i_orphaned_slot = 0; | |
10cf1a02 TM |
2259 | inode->i_nlink = 1; |
2260 | ocfs2_set_links_count(di, inode->i_nlink); | |
bc13d347 TM |
2261 | ocfs2_journal_dirty(handle, di_bh); |
2262 | ||
2263 | status = ocfs2_add_entry(handle, dentry, inode, | |
2264 | OCFS2_I(inode)->ip_blkno, parent_di_bh, | |
2265 | &lookup); | |
2266 | if (status < 0) { | |
2267 | mlog_errno(status); | |
2268 | goto out_commit; | |
2269 | } | |
2270 | ||
2271 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
2272 | OCFS2_I(dir)->ip_blkno); | |
2273 | if (status) { | |
2274 | mlog_errno(status); | |
2275 | goto out_commit; | |
2276 | } | |
2277 | ||
bc13d347 TM |
2278 | dentry->d_op = &ocfs2_dentry_ops; |
2279 | d_instantiate(dentry, inode); | |
2280 | status = 0; | |
2281 | out_commit: | |
2282 | ocfs2_commit_trans(osb, handle); | |
2283 | orphan_unlock: | |
2284 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
2285 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2286 | iput(orphan_dir_inode); | |
2287 | leave: | |
2288 | ||
2289 | ocfs2_inode_unlock(dir, 1); | |
2290 | ||
2291 | brelse(di_bh); | |
2292 | brelse(parent_di_bh); | |
2293 | brelse(orphan_dir_bh); | |
2294 | ||
2295 | ocfs2_free_dir_lookup_result(&lookup); | |
2296 | ||
2297 | mlog_exit(status); | |
2298 | ||
2299 | return status; | |
2300 | } | |
2301 | ||
92e1d5be | 2302 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2303 | .create = ocfs2_create, |
2304 | .lookup = ocfs2_lookup, | |
2305 | .link = ocfs2_link, | |
2306 | .unlink = ocfs2_unlink, | |
2307 | .rmdir = ocfs2_unlink, | |
2308 | .symlink = ocfs2_symlink, | |
2309 | .mkdir = ocfs2_mkdir, | |
2310 | .mknod = ocfs2_mknod, | |
2311 | .rename = ocfs2_rename, | |
2312 | .setattr = ocfs2_setattr, | |
2313 | .getattr = ocfs2_getattr, | |
d38eb8db | 2314 | .permission = ocfs2_permission, |
cf1d6c76 TY |
2315 | .setxattr = generic_setxattr, |
2316 | .getxattr = generic_getxattr, | |
2317 | .listxattr = ocfs2_listxattr, | |
2318 | .removexattr = generic_removexattr, | |
55f4946e | 2319 | .fiemap = ocfs2_fiemap, |
ccd979bd | 2320 | }; |