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ccd979bd MF |
1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * namei.c | |
5 | * | |
6 | * Create and rename file, directory, symlinks | |
7 | * | |
8 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
9 | * | |
10 | * Portions of this code from linux/fs/ext3/dir.c | |
11 | * | |
12 | * Copyright (C) 1992, 1993, 1994, 1995 | |
13 | * Remy Card (card@masi.ibp.fr) | |
14 | * Laboratoire MASI - Institut Blaise pascal | |
15 | * Universite Pierre et Marie Curie (Paris VI) | |
16 | * | |
17 | * from | |
18 | * | |
19 | * linux/fs/minix/dir.c | |
20 | * | |
21 | * Copyright (C) 1991, 1992 Linux Torvalds | |
22 | * | |
23 | * This program is free software; you can redistribute it and/or | |
24 | * modify it under the terms of the GNU General Public | |
25 | * License as published by the Free Software Foundation; either | |
26 | * version 2 of the License, or (at your option) any later version. | |
27 | * | |
28 | * This program is distributed in the hope that it will be useful, | |
29 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
30 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
31 | * General Public License for more details. | |
32 | * | |
33 | * You should have received a copy of the GNU General Public | |
34 | * License along with this program; if not, write to the | |
35 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
36 | * Boston, MA 021110-1307, USA. | |
37 | */ | |
38 | ||
39 | #include <linux/fs.h> | |
40 | #include <linux/types.h> | |
41 | #include <linux/slab.h> | |
42 | #include <linux/highmem.h> | |
a90714c1 | 43 | #include <linux/quotaops.h> |
ccd979bd MF |
44 | |
45 | #define MLOG_MASK_PREFIX ML_NAMEI | |
46 | #include <cluster/masklog.h> | |
47 | ||
48 | #include "ocfs2.h" | |
49 | ||
50 | #include "alloc.h" | |
51 | #include "dcache.h" | |
52 | #include "dir.h" | |
53 | #include "dlmglue.h" | |
54 | #include "extent_map.h" | |
55 | #include "file.h" | |
56 | #include "inode.h" | |
57 | #include "journal.h" | |
58 | #include "namei.h" | |
59 | #include "suballoc.h" | |
aa958874 | 60 | #include "super.h" |
ccd979bd MF |
61 | #include "symlink.h" |
62 | #include "sysfile.h" | |
63 | #include "uptodate.h" | |
cf1d6c76 | 64 | #include "xattr.h" |
89c38bd0 | 65 | #include "acl.h" |
ccd979bd MF |
66 | |
67 | #include "buffer_head_io.h" | |
68 | ||
ccd979bd MF |
69 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
70 | struct inode *dir, | |
f5d36202 | 71 | struct inode *inode, |
ccd979bd MF |
72 | dev_t dev, |
73 | struct buffer_head **new_fe_bh, | |
74 | struct buffer_head *parent_fe_bh, | |
1fabe148 | 75 | handle_t *handle, |
ccd979bd MF |
76 | struct ocfs2_alloc_context *inode_ac); |
77 | ||
ccd979bd | 78 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, |
5098c27b | 79 | struct inode **ret_orphan_dir, |
19bd341f | 80 | u64 blkno, |
ccd979bd | 81 | char *name, |
4a12ca3a | 82 | struct ocfs2_dir_lookup_result *lookup); |
ccd979bd MF |
83 | |
84 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 85 | handle_t *handle, |
ccd979bd | 86 | struct inode *inode, |
3939fda4 | 87 | struct buffer_head *fe_bh, |
ccd979bd | 88 | char *name, |
4a12ca3a | 89 | struct ocfs2_dir_lookup_result *lookup, |
5098c27b | 90 | struct inode *orphan_dir_inode); |
ccd979bd MF |
91 | |
92 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 93 | handle_t *handle, |
ccd979bd MF |
94 | struct inode *inode, |
95 | const char *symname); | |
96 | ||
ccd979bd MF |
97 | /* An orphan dir name is an 8 byte value, printed as a hex string */ |
98 | #define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64))) | |
99 | ||
100 | static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry, | |
101 | struct nameidata *nd) | |
102 | { | |
103 | int status; | |
104 | u64 blkno; | |
ccd979bd MF |
105 | struct inode *inode = NULL; |
106 | struct dentry *ret; | |
ccd979bd MF |
107 | struct ocfs2_inode_info *oi; |
108 | ||
109 | mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry, | |
110 | dentry->d_name.len, dentry->d_name.name); | |
111 | ||
112 | if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) { | |
113 | ret = ERR_PTR(-ENAMETOOLONG); | |
114 | goto bail; | |
115 | } | |
116 | ||
b0697053 MF |
117 | mlog(0, "find name %.*s in directory %llu\n", dentry->d_name.len, |
118 | dentry->d_name.name, (unsigned long long)OCFS2_I(dir)->ip_blkno); | |
ccd979bd | 119 | |
cb25797d | 120 | status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT); |
ccd979bd MF |
121 | if (status < 0) { |
122 | if (status != -ENOENT) | |
123 | mlog_errno(status); | |
124 | ret = ERR_PTR(status); | |
125 | goto bail; | |
126 | } | |
127 | ||
be94d117 MF |
128 | status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name, |
129 | dentry->d_name.len, &blkno); | |
ccd979bd MF |
130 | if (status < 0) |
131 | goto bail_add; | |
132 | ||
5fa0613e | 133 | inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0); |
ccd979bd | 134 | if (IS_ERR(inode)) { |
ccd979bd MF |
135 | ret = ERR_PTR(-EACCES); |
136 | goto bail_unlock; | |
137 | } | |
138 | ||
139 | oi = OCFS2_I(inode); | |
140 | /* Clear any orphaned state... If we were able to look up the | |
141 | * inode from a directory, it certainly can't be orphaned. We | |
142 | * might have the bad state from a node which intended to | |
143 | * orphan this inode but crashed before it could commit the | |
144 | * unlink. */ | |
145 | spin_lock(&oi->ip_lock); | |
146 | oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED; | |
ccd979bd MF |
147 | spin_unlock(&oi->ip_lock); |
148 | ||
149 | bail_add: | |
ccd979bd MF |
150 | dentry->d_op = &ocfs2_dentry_ops; |
151 | ret = d_splice_alias(inode, dentry); | |
152 | ||
379dfe9d MF |
153 | if (inode) { |
154 | /* | |
155 | * If d_splice_alias() finds a DCACHE_DISCONNECTED | |
156 | * dentry, it will d_move() it on top of ourse. The | |
157 | * return value will indicate this however, so in | |
158 | * those cases, we switch them around for the locking | |
159 | * code. | |
160 | * | |
161 | * NOTE: This dentry already has ->d_op set from | |
162 | * ocfs2_get_parent() and ocfs2_get_dentry() | |
163 | */ | |
164 | if (ret) | |
165 | dentry = ret; | |
166 | ||
167 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
0027dd5b | 168 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
169 | if (status) { |
170 | mlog_errno(status); | |
171 | ret = ERR_PTR(status); | |
172 | goto bail_unlock; | |
173 | } | |
174 | } | |
175 | ||
ccd979bd MF |
176 | bail_unlock: |
177 | /* Don't drop the cluster lock until *after* the d_add -- | |
178 | * unlink on another node will message us to remove that | |
179 | * dentry under this lock so otherwise we can race this with | |
34d024f8 | 180 | * the downconvert thread and have a stale dentry. */ |
e63aecb6 | 181 | ocfs2_inode_unlock(dir, 0); |
ccd979bd MF |
182 | |
183 | bail: | |
ccd979bd MF |
184 | |
185 | mlog_exit_ptr(ret); | |
186 | ||
187 | return ret; | |
188 | } | |
189 | ||
f5d36202 TY |
190 | static struct inode *ocfs2_get_init_inode(struct inode *dir, int mode) |
191 | { | |
192 | struct inode *inode; | |
193 | ||
194 | inode = new_inode(dir->i_sb); | |
195 | if (!inode) { | |
196 | mlog(ML_ERROR, "new_inode failed!\n"); | |
197 | return NULL; | |
198 | } | |
199 | ||
200 | /* populate as many fields early on as possible - many of | |
201 | * these are used by the support functions here and in | |
202 | * callers. */ | |
203 | if (S_ISDIR(mode)) | |
204 | inode->i_nlink = 2; | |
205 | else | |
206 | inode->i_nlink = 1; | |
207 | inode->i_uid = current_fsuid(); | |
208 | if (dir->i_mode & S_ISGID) { | |
209 | inode->i_gid = dir->i_gid; | |
210 | if (S_ISDIR(mode)) | |
211 | mode |= S_ISGID; | |
212 | } else | |
213 | inode->i_gid = current_fsgid(); | |
214 | inode->i_mode = mode; | |
871a2931 | 215 | dquot_initialize(inode); |
f5d36202 TY |
216 | return inode; |
217 | } | |
218 | ||
ccd979bd MF |
219 | static int ocfs2_mknod(struct inode *dir, |
220 | struct dentry *dentry, | |
221 | int mode, | |
222 | dev_t dev) | |
223 | { | |
224 | int status = 0; | |
225 | struct buffer_head *parent_fe_bh = NULL; | |
1fabe148 | 226 | handle_t *handle = NULL; |
ccd979bd MF |
227 | struct ocfs2_super *osb; |
228 | struct ocfs2_dinode *dirfe; | |
229 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
230 | struct inode *inode = NULL; |
231 | struct ocfs2_alloc_context *inode_ac = NULL; | |
232 | struct ocfs2_alloc_context *data_ac = NULL; | |
9b7895ef | 233 | struct ocfs2_alloc_context *meta_ac = NULL; |
534eaddd | 234 | int want_clusters = 0; |
9b7895ef | 235 | int want_meta = 0; |
534eaddd TY |
236 | int xattr_credits = 0; |
237 | struct ocfs2_security_xattr_info si = { | |
238 | .enable = 1, | |
239 | }; | |
a90714c1 | 240 | int did_quota_inode = 0; |
4a12ca3a | 241 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
242 | |
243 | mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, mode, | |
244 | (unsigned long)dev, dentry->d_name.len, | |
245 | dentry->d_name.name); | |
246 | ||
871a2931 | 247 | dquot_initialize(dir); |
907f4554 | 248 | |
ccd979bd MF |
249 | /* get our super block */ |
250 | osb = OCFS2_SB(dir->i_sb); | |
251 | ||
e63aecb6 | 252 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
e3a82138 MF |
253 | if (status < 0) { |
254 | if (status != -ENOENT) | |
255 | mlog_errno(status); | |
256 | return status; | |
257 | } | |
258 | ||
198a1ca3 | 259 | if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) { |
a663e305 MF |
260 | status = -EMLINK; |
261 | goto leave; | |
262 | } | |
263 | ||
ccd979bd | 264 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
198a1ca3 | 265 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
266 | /* can't make a file in a deleted directory. */ |
267 | status = -ENOENT; | |
268 | goto leave; | |
269 | } | |
270 | ||
271 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
272 | dentry->d_name.len); | |
273 | if (status) | |
274 | goto leave; | |
275 | ||
276 | /* get a spot inside the dir. */ | |
277 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
278 | dentry->d_name.name, | |
4a12ca3a | 279 | dentry->d_name.len, &lookup); |
ccd979bd MF |
280 | if (status < 0) { |
281 | mlog_errno(status); | |
282 | goto leave; | |
283 | } | |
284 | ||
285 | /* reserve an inode spot */ | |
da5cbf2f | 286 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
287 | if (status < 0) { |
288 | if (status != -ENOSPC) | |
289 | mlog_errno(status); | |
290 | goto leave; | |
291 | } | |
292 | ||
f5d36202 TY |
293 | inode = ocfs2_get_init_inode(dir, mode); |
294 | if (!inode) { | |
295 | status = -ENOMEM; | |
296 | mlog_errno(status); | |
297 | goto leave; | |
298 | } | |
299 | ||
534eaddd TY |
300 | /* get security xattr */ |
301 | status = ocfs2_init_security_get(inode, dir, &si); | |
302 | if (status) { | |
303 | if (status == -EOPNOTSUPP) | |
304 | si.enable = 0; | |
305 | else { | |
306 | mlog_errno(status); | |
307 | goto leave; | |
308 | } | |
309 | } | |
310 | ||
89c38bd0 TY |
311 | /* calculate meta data/clusters for setting security and acl xattr */ |
312 | status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode, | |
9b7895ef MF |
313 | &si, &want_clusters, |
314 | &xattr_credits, &want_meta); | |
89c38bd0 TY |
315 | if (status < 0) { |
316 | mlog_errno(status); | |
317 | goto leave; | |
ccd979bd MF |
318 | } |
319 | ||
534eaddd | 320 | /* Reserve a cluster if creating an extent based directory. */ |
9b7895ef | 321 | if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) { |
534eaddd TY |
322 | want_clusters += 1; |
323 | ||
9b7895ef | 324 | /* Dir indexing requires extra space as well */ |
4ed8a6bb | 325 | if (ocfs2_supports_indexed_dirs(osb)) |
9b7895ef | 326 | want_meta++; |
9b7895ef MF |
327 | } |
328 | ||
329 | status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac); | |
330 | if (status < 0) { | |
331 | if (status != -ENOSPC) | |
332 | mlog_errno(status); | |
333 | goto leave; | |
334 | } | |
335 | ||
534eaddd TY |
336 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); |
337 | if (status < 0) { | |
338 | if (status != -ENOSPC) | |
339 | mlog_errno(status); | |
340 | goto leave; | |
341 | } | |
342 | ||
9b7895ef MF |
343 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, |
344 | S_ISDIR(mode), | |
345 | xattr_credits)); | |
ccd979bd MF |
346 | if (IS_ERR(handle)) { |
347 | status = PTR_ERR(handle); | |
348 | handle = NULL; | |
349 | mlog_errno(status); | |
350 | goto leave; | |
351 | } | |
352 | ||
63936dda CH |
353 | status = dquot_alloc_inode(inode); |
354 | if (status) | |
a90714c1 | 355 | goto leave; |
a90714c1 JK |
356 | did_quota_inode = 1; |
357 | ||
19bd341f TM |
358 | mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, |
359 | inode->i_mode, (unsigned long)dev, dentry->d_name.len, | |
360 | dentry->d_name.name); | |
361 | ||
ccd979bd | 362 | /* do the real work now. */ |
19bd341f | 363 | status = ocfs2_mknod_locked(osb, dir, inode, dev, |
ccd979bd | 364 | &new_fe_bh, parent_fe_bh, handle, |
f5d36202 | 365 | inode_ac); |
ccd979bd MF |
366 | if (status < 0) { |
367 | mlog_errno(status); | |
368 | goto leave; | |
369 | } | |
370 | ||
371 | if (S_ISDIR(mode)) { | |
372 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, | |
9b7895ef | 373 | new_fe_bh, data_ac, meta_ac); |
ccd979bd MF |
374 | if (status < 0) { |
375 | mlog_errno(status); | |
376 | goto leave; | |
377 | } | |
378 | ||
0cf2f763 JB |
379 | status = ocfs2_journal_access_di(handle, INODE_CACHE(dir), |
380 | parent_fe_bh, | |
13723d00 | 381 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
382 | if (status < 0) { |
383 | mlog_errno(status); | |
384 | goto leave; | |
385 | } | |
198a1ca3 | 386 | ocfs2_add_links_count(dirfe, 1); |
ccd979bd MF |
387 | status = ocfs2_journal_dirty(handle, parent_fe_bh); |
388 | if (status < 0) { | |
389 | mlog_errno(status); | |
390 | goto leave; | |
391 | } | |
d8c76e6f | 392 | inc_nlink(dir); |
ccd979bd MF |
393 | } |
394 | ||
89c38bd0 | 395 | status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh, |
9b7895ef | 396 | meta_ac, data_ac); |
89c38bd0 TY |
397 | if (status < 0) { |
398 | mlog_errno(status); | |
399 | goto leave; | |
400 | } | |
401 | ||
534eaddd TY |
402 | if (si.enable) { |
403 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
9b7895ef | 404 | meta_ac, data_ac); |
534eaddd TY |
405 | if (status < 0) { |
406 | mlog_errno(status); | |
407 | goto leave; | |
408 | } | |
409 | } | |
410 | ||
a9743fcd MF |
411 | /* |
412 | * Do this before adding the entry to the directory. We add | |
413 | * also set d_op after success so that ->d_iput() will cleanup | |
414 | * the dentry lock even if ocfs2_add_entry() fails below. | |
415 | */ | |
416 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
417 | OCFS2_I(dir)->ip_blkno); | |
418 | if (status) { | |
ccd979bd MF |
419 | mlog_errno(status); |
420 | goto leave; | |
421 | } | |
a9743fcd | 422 | dentry->d_op = &ocfs2_dentry_ops; |
ccd979bd | 423 | |
a9743fcd MF |
424 | status = ocfs2_add_entry(handle, dentry, inode, |
425 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
426 | &lookup); | |
427 | if (status < 0) { | |
379dfe9d MF |
428 | mlog_errno(status); |
429 | goto leave; | |
430 | } | |
431 | ||
ccd979bd | 432 | insert_inode_hash(inode); |
ccd979bd MF |
433 | d_instantiate(dentry, inode); |
434 | status = 0; | |
435 | leave: | |
a90714c1 | 436 | if (status < 0 && did_quota_inode) |
63936dda | 437 | dquot_free_inode(inode); |
ccd979bd | 438 | if (handle) |
02dc1af4 | 439 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 440 | |
e63aecb6 | 441 | ocfs2_inode_unlock(dir, 1); |
e3a82138 | 442 | |
ccd979bd MF |
443 | if (status == -ENOSPC) |
444 | mlog(0, "Disk is full\n"); | |
445 | ||
a81cb88b | 446 | brelse(new_fe_bh); |
a81cb88b | 447 | brelse(parent_fe_bh); |
534eaddd TY |
448 | kfree(si.name); |
449 | kfree(si.value); | |
ccd979bd | 450 | |
4a12ca3a MF |
451 | ocfs2_free_dir_lookup_result(&lookup); |
452 | ||
ccd979bd MF |
453 | if (inode_ac) |
454 | ocfs2_free_alloc_context(inode_ac); | |
455 | ||
456 | if (data_ac) | |
457 | ocfs2_free_alloc_context(data_ac); | |
458 | ||
9b7895ef MF |
459 | if (meta_ac) |
460 | ocfs2_free_alloc_context(meta_ac); | |
534eaddd | 461 | |
062d3403 LD |
462 | /* |
463 | * We should call iput after the i_mutex of the bitmap been | |
464 | * unlocked in ocfs2_free_alloc_context, or the | |
465 | * ocfs2_delete_inode will mutex_lock again. | |
466 | */ | |
467 | if ((status < 0) && inode) { | |
468 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; | |
469 | clear_nlink(inode); | |
470 | iput(inode); | |
471 | } | |
472 | ||
ccd979bd MF |
473 | mlog_exit(status); |
474 | ||
475 | return status; | |
476 | } | |
477 | ||
478 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, | |
479 | struct inode *dir, | |
f5d36202 | 480 | struct inode *inode, |
ccd979bd MF |
481 | dev_t dev, |
482 | struct buffer_head **new_fe_bh, | |
483 | struct buffer_head *parent_fe_bh, | |
1fabe148 | 484 | handle_t *handle, |
ccd979bd MF |
485 | struct ocfs2_alloc_context *inode_ac) |
486 | { | |
487 | int status = 0; | |
488 | struct ocfs2_dinode *fe = NULL; | |
489 | struct ocfs2_extent_list *fel; | |
490 | u64 fe_blkno = 0; | |
491 | u16 suballoc_bit; | |
9b7895ef | 492 | u16 feat; |
ccd979bd | 493 | |
ccd979bd | 494 | *new_fe_bh = NULL; |
ccd979bd | 495 | |
13821151 TM |
496 | status = ocfs2_claim_new_inode(osb, handle, dir, parent_fe_bh, |
497 | inode_ac, &suballoc_bit, &fe_blkno); | |
ccd979bd MF |
498 | if (status < 0) { |
499 | mlog_errno(status); | |
500 | goto leave; | |
501 | } | |
502 | ||
ccd979bd MF |
503 | /* populate as many fields early on as possible - many of |
504 | * these are used by the support functions here and in | |
505 | * callers. */ | |
506 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
507 | OCFS2_I(inode)->ip_blkno = fe_blkno; | |
ccd979bd MF |
508 | spin_lock(&osb->osb_lock); |
509 | inode->i_generation = osb->s_next_generation++; | |
510 | spin_unlock(&osb->osb_lock); | |
511 | ||
512 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
513 | if (!*new_fe_bh) { | |
514 | status = -EIO; | |
515 | mlog_errno(status); | |
516 | goto leave; | |
517 | } | |
8cb471e8 | 518 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
ccd979bd | 519 | |
0cf2f763 JB |
520 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
521 | *new_fe_bh, | |
13723d00 | 522 | OCFS2_JOURNAL_ACCESS_CREATE); |
ccd979bd MF |
523 | if (status < 0) { |
524 | mlog_errno(status); | |
525 | goto leave; | |
526 | } | |
527 | ||
528 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
529 | memset(fe, 0, osb->sb->s_blocksize); | |
530 | ||
531 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
532 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
533 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
534 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); | |
4d0ddb2c | 535 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
f5d36202 TY |
536 | fe->i_uid = cpu_to_le32(inode->i_uid); |
537 | fe->i_gid = cpu_to_le32(inode->i_gid); | |
538 | fe->i_mode = cpu_to_le16(inode->i_mode); | |
539 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 540 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
198a1ca3 MF |
541 | |
542 | ocfs2_set_links_count(fe, inode->i_nlink); | |
ccd979bd MF |
543 | |
544 | fe->i_last_eb_blk = 0; | |
545 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
546 | le32_add_cpu(&fe->i_flags, OCFS2_VALID_FL); | |
547 | fe->i_atime = fe->i_ctime = fe->i_mtime = | |
548 | cpu_to_le64(CURRENT_TIME.tv_sec); | |
549 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = | |
550 | cpu_to_le32(CURRENT_TIME.tv_nsec); | |
551 | fe->i_dtime = 0; | |
552 | ||
5b6a3a2b | 553 | /* |
9b7895ef MF |
554 | * If supported, directories start with inline data. If inline |
555 | * isn't supported, but indexing is, we start them as indexed. | |
5b6a3a2b | 556 | */ |
9b7895ef | 557 | feat = le16_to_cpu(fe->i_dyn_features); |
f5d36202 | 558 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
559 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
560 | ||
d9ae49d6 TY |
561 | fe->id2.i_data.id_count = cpu_to_le16( |
562 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); | |
5b6a3a2b MF |
563 | } else { |
564 | fel = &fe->id2.i_list; | |
565 | fel->l_tree_depth = 0; | |
566 | fel->l_next_free_rec = 0; | |
567 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
568 | } | |
ccd979bd MF |
569 | |
570 | status = ocfs2_journal_dirty(handle, *new_fe_bh); | |
571 | if (status < 0) { | |
572 | mlog_errno(status); | |
573 | goto leave; | |
574 | } | |
575 | ||
b657c95c | 576 | ocfs2_populate_inode(inode, fe, 1); |
0cf2f763 | 577 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
c271c5c2 SM |
578 | if (!ocfs2_mount_local(osb)) { |
579 | status = ocfs2_create_new_inode_locks(inode); | |
580 | if (status < 0) | |
581 | mlog_errno(status); | |
582 | } | |
ccd979bd MF |
583 | |
584 | status = 0; /* error in ocfs2_create_new_inode_locks is not | |
585 | * critical */ | |
586 | ||
ccd979bd MF |
587 | leave: |
588 | if (status < 0) { | |
589 | if (*new_fe_bh) { | |
590 | brelse(*new_fe_bh); | |
591 | *new_fe_bh = NULL; | |
592 | } | |
ccd979bd MF |
593 | } |
594 | ||
595 | mlog_exit(status); | |
596 | return status; | |
597 | } | |
598 | ||
599 | static int ocfs2_mkdir(struct inode *dir, | |
600 | struct dentry *dentry, | |
601 | int mode) | |
602 | { | |
603 | int ret; | |
604 | ||
605 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, | |
606 | dentry->d_name.len, dentry->d_name.name); | |
607 | ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0); | |
608 | mlog_exit(ret); | |
609 | ||
610 | return ret; | |
611 | } | |
612 | ||
613 | static int ocfs2_create(struct inode *dir, | |
614 | struct dentry *dentry, | |
615 | int mode, | |
616 | struct nameidata *nd) | |
617 | { | |
618 | int ret; | |
619 | ||
620 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, | |
621 | dentry->d_name.len, dentry->d_name.name); | |
622 | ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0); | |
623 | mlog_exit(ret); | |
624 | ||
625 | return ret; | |
626 | } | |
627 | ||
628 | static int ocfs2_link(struct dentry *old_dentry, | |
629 | struct inode *dir, | |
630 | struct dentry *dentry) | |
631 | { | |
1fabe148 | 632 | handle_t *handle; |
ccd979bd MF |
633 | struct inode *inode = old_dentry->d_inode; |
634 | int err; | |
635 | struct buffer_head *fe_bh = NULL; | |
636 | struct buffer_head *parent_fe_bh = NULL; | |
ccd979bd MF |
637 | struct ocfs2_dinode *fe = NULL; |
638 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
4a12ca3a | 639 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
640 | |
641 | mlog_entry("(inode=%lu, old='%.*s' new='%.*s')\n", inode->i_ino, | |
642 | old_dentry->d_name.len, old_dentry->d_name.name, | |
643 | dentry->d_name.len, dentry->d_name.name); | |
644 | ||
123a9643 MF |
645 | if (S_ISDIR(inode->i_mode)) |
646 | return -EPERM; | |
ccd979bd | 647 | |
871a2931 | 648 | dquot_initialize(dir); |
907f4554 | 649 | |
cb25797d | 650 | err = ocfs2_inode_lock_nested(dir, &parent_fe_bh, 1, OI_LS_PARENT); |
ccd979bd MF |
651 | if (err < 0) { |
652 | if (err != -ENOENT) | |
653 | mlog_errno(err); | |
123a9643 | 654 | return err; |
ccd979bd MF |
655 | } |
656 | ||
0f62de2c TY |
657 | if (!dir->i_nlink) { |
658 | err = -ENOENT; | |
123a9643 | 659 | goto out; |
0f62de2c TY |
660 | } |
661 | ||
ccd979bd MF |
662 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
663 | dentry->d_name.len); | |
664 | if (err) | |
123a9643 | 665 | goto out; |
ccd979bd MF |
666 | |
667 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
668 | dentry->d_name.name, | |
4a12ca3a | 669 | dentry->d_name.len, &lookup); |
ccd979bd MF |
670 | if (err < 0) { |
671 | mlog_errno(err); | |
123a9643 | 672 | goto out; |
ccd979bd MF |
673 | } |
674 | ||
e63aecb6 | 675 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
676 | if (err < 0) { |
677 | if (err != -ENOENT) | |
678 | mlog_errno(err); | |
123a9643 | 679 | goto out; |
ccd979bd MF |
680 | } |
681 | ||
682 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
198a1ca3 | 683 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
ccd979bd | 684 | err = -EMLINK; |
123a9643 | 685 | goto out_unlock_inode; |
ccd979bd MF |
686 | } |
687 | ||
a90714c1 | 688 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
689 | if (IS_ERR(handle)) { |
690 | err = PTR_ERR(handle); | |
691 | handle = NULL; | |
692 | mlog_errno(err); | |
123a9643 | 693 | goto out_unlock_inode; |
ccd979bd MF |
694 | } |
695 | ||
0cf2f763 | 696 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 697 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
698 | if (err < 0) { |
699 | mlog_errno(err); | |
123a9643 | 700 | goto out_commit; |
ccd979bd MF |
701 | } |
702 | ||
d8c76e6f | 703 | inc_nlink(inode); |
ccd979bd | 704 | inode->i_ctime = CURRENT_TIME; |
198a1ca3 | 705 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
706 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
707 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
708 | ||
709 | err = ocfs2_journal_dirty(handle, fe_bh); | |
710 | if (err < 0) { | |
198a1ca3 | 711 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 712 | drop_nlink(inode); |
ccd979bd | 713 | mlog_errno(err); |
123a9643 | 714 | goto out_commit; |
ccd979bd MF |
715 | } |
716 | ||
717 | err = ocfs2_add_entry(handle, dentry, inode, | |
718 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 719 | parent_fe_bh, &lookup); |
ccd979bd | 720 | if (err) { |
198a1ca3 | 721 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 722 | drop_nlink(inode); |
ccd979bd | 723 | mlog_errno(err); |
123a9643 | 724 | goto out_commit; |
ccd979bd MF |
725 | } |
726 | ||
0027dd5b | 727 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
728 | if (err) { |
729 | mlog_errno(err); | |
123a9643 | 730 | goto out_commit; |
379dfe9d MF |
731 | } |
732 | ||
ccd979bd MF |
733 | atomic_inc(&inode->i_count); |
734 | dentry->d_op = &ocfs2_dentry_ops; | |
735 | d_instantiate(dentry, inode); | |
123a9643 MF |
736 | |
737 | out_commit: | |
02dc1af4 | 738 | ocfs2_commit_trans(osb, handle); |
123a9643 | 739 | out_unlock_inode: |
e63aecb6 | 740 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
741 | |
742 | out: | |
e63aecb6 | 743 | ocfs2_inode_unlock(dir, 1); |
123a9643 | 744 | |
a81cb88b MF |
745 | brelse(fe_bh); |
746 | brelse(parent_fe_bh); | |
ccd979bd | 747 | |
4a12ca3a MF |
748 | ocfs2_free_dir_lookup_result(&lookup); |
749 | ||
ccd979bd MF |
750 | mlog_exit(err); |
751 | ||
752 | return err; | |
753 | } | |
754 | ||
379dfe9d MF |
755 | /* |
756 | * Takes and drops an exclusive lock on the given dentry. This will | |
757 | * force other nodes to drop it. | |
758 | */ | |
759 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
760 | { | |
761 | int ret; | |
762 | ||
763 | ret = ocfs2_dentry_lock(dentry, 1); | |
764 | if (ret) | |
765 | mlog_errno(ret); | |
766 | else | |
767 | ocfs2_dentry_unlock(dentry, 1); | |
768 | ||
769 | return ret; | |
770 | } | |
771 | ||
17ff7856 MF |
772 | static inline int inode_is_unlinkable(struct inode *inode) |
773 | { | |
774 | if (S_ISDIR(inode->i_mode)) { | |
775 | if (inode->i_nlink == 2) | |
776 | return 1; | |
777 | return 0; | |
778 | } | |
779 | ||
780 | if (inode->i_nlink == 1) | |
781 | return 1; | |
782 | return 0; | |
783 | } | |
784 | ||
ccd979bd MF |
785 | static int ocfs2_unlink(struct inode *dir, |
786 | struct dentry *dentry) | |
787 | { | |
788 | int status; | |
30a4f5e8 | 789 | int child_locked = 0; |
ccd979bd | 790 | struct inode *inode = dentry->d_inode; |
5098c27b | 791 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
792 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
793 | u64 blkno; | |
794 | struct ocfs2_dinode *fe = NULL; | |
795 | struct buffer_head *fe_bh = NULL; | |
796 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 797 | handle_t *handle = NULL; |
ccd979bd | 798 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
799 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
800 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd MF |
801 | |
802 | mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry, | |
803 | dentry->d_name.len, dentry->d_name.name); | |
804 | ||
871a2931 | 805 | dquot_initialize(dir); |
907f4554 | 806 | |
ccd979bd MF |
807 | BUG_ON(dentry->d_parent->d_inode != dir); |
808 | ||
b0697053 | 809 | mlog(0, "ino = %llu\n", (unsigned long long)OCFS2_I(inode)->ip_blkno); |
ccd979bd MF |
810 | |
811 | if (inode == osb->root_inode) { | |
812 | mlog(0, "Cannot delete the root directory\n"); | |
30a4f5e8 | 813 | return -EPERM; |
ccd979bd MF |
814 | } |
815 | ||
cb25797d JK |
816 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
817 | OI_LS_PARENT); | |
ccd979bd MF |
818 | if (status < 0) { |
819 | if (status != -ENOENT) | |
820 | mlog_errno(status); | |
30a4f5e8 | 821 | return status; |
ccd979bd MF |
822 | } |
823 | ||
824 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
825 | dentry->d_name.len, &blkno, dir, |
826 | &lookup); | |
ccd979bd MF |
827 | if (status < 0) { |
828 | if (status != -ENOENT) | |
829 | mlog_errno(status); | |
830 | goto leave; | |
831 | } | |
832 | ||
833 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
834 | status = -ENOENT; | |
835 | ||
b0697053 MF |
836 | mlog(0, "ip_blkno %llu != dirent blkno %llu ip_flags = %x\n", |
837 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
838 | (unsigned long long)blkno, OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
839 | goto leave; |
840 | } | |
841 | ||
e63aecb6 | 842 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
843 | if (status < 0) { |
844 | if (status != -ENOENT) | |
845 | mlog_errno(status); | |
846 | goto leave; | |
847 | } | |
30a4f5e8 | 848 | child_locked = 1; |
ccd979bd MF |
849 | |
850 | if (S_ISDIR(inode->i_mode)) { | |
b80b549c | 851 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
ccd979bd MF |
852 | status = -ENOTEMPTY; |
853 | goto leave; | |
854 | } | |
855 | } | |
856 | ||
379dfe9d | 857 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 858 | if (status < 0) { |
34d024f8 | 859 | /* This remote delete should succeed under all normal |
ccd979bd MF |
860 | * circumstances. */ |
861 | mlog_errno(status); | |
862 | goto leave; | |
863 | } | |
864 | ||
17ff7856 | 865 | if (inode_is_unlinkable(inode)) { |
19bd341f TM |
866 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
867 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 868 | orphan_name, &orphan_insert); |
ccd979bd MF |
869 | if (status < 0) { |
870 | mlog_errno(status); | |
871 | goto leave; | |
872 | } | |
873 | } | |
874 | ||
a90714c1 | 875 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
876 | if (IS_ERR(handle)) { |
877 | status = PTR_ERR(handle); | |
878 | handle = NULL; | |
879 | mlog_errno(status); | |
880 | goto leave; | |
881 | } | |
882 | ||
0cf2f763 | 883 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 884 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
885 | if (status < 0) { |
886 | mlog_errno(status); | |
887 | goto leave; | |
888 | } | |
889 | ||
890 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
891 | ||
17ff7856 | 892 | if (inode_is_unlinkable(inode)) { |
3939fda4 | 893 | status = ocfs2_orphan_add(osb, handle, inode, fe_bh, orphan_name, |
4a12ca3a | 894 | &orphan_insert, orphan_dir); |
ccd979bd MF |
895 | if (status < 0) { |
896 | mlog_errno(status); | |
897 | goto leave; | |
898 | } | |
899 | } | |
900 | ||
901 | /* delete the name from the parent dir */ | |
4a12ca3a | 902 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
903 | if (status < 0) { |
904 | mlog_errno(status); | |
905 | goto leave; | |
906 | } | |
907 | ||
17ff7856 MF |
908 | if (S_ISDIR(inode->i_mode)) |
909 | drop_nlink(inode); | |
910 | drop_nlink(inode); | |
198a1ca3 | 911 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
912 | |
913 | status = ocfs2_journal_dirty(handle, fe_bh); | |
914 | if (status < 0) { | |
915 | mlog_errno(status); | |
916 | goto leave; | |
917 | } | |
918 | ||
592282cf MF |
919 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; |
920 | if (S_ISDIR(inode->i_mode)) | |
17ff7856 | 921 | drop_nlink(dir); |
592282cf MF |
922 | |
923 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
924 | if (status < 0) { | |
925 | mlog_errno(status); | |
926 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 927 | inc_nlink(dir); |
ccd979bd MF |
928 | } |
929 | ||
930 | leave: | |
ccd979bd | 931 | if (handle) |
02dc1af4 | 932 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 933 | |
30a4f5e8 | 934 | if (child_locked) |
e63aecb6 | 935 | ocfs2_inode_unlock(inode, 1); |
30a4f5e8 | 936 | |
e63aecb6 | 937 | ocfs2_inode_unlock(dir, 1); |
30a4f5e8 | 938 | |
5098c27b MF |
939 | if (orphan_dir) { |
940 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 941 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
942 | mutex_unlock(&orphan_dir->i_mutex); |
943 | iput(orphan_dir); | |
944 | } | |
945 | ||
a81cb88b | 946 | brelse(fe_bh); |
a81cb88b | 947 | brelse(parent_node_bh); |
4a12ca3a MF |
948 | |
949 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
950 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd MF |
951 | |
952 | mlog_exit(status); | |
953 | ||
954 | return status; | |
955 | } | |
956 | ||
957 | /* | |
958 | * The only place this should be used is rename! | |
959 | * if they have the same id, then the 1st one is the only one locked. | |
960 | */ | |
961 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
962 | struct buffer_head **bh1, |
963 | struct inode *inode1, | |
964 | struct buffer_head **bh2, | |
965 | struct inode *inode2) | |
966 | { | |
967 | int status; | |
968 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); | |
969 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
970 | struct buffer_head **tmpbh; | |
971 | struct inode *tmpinode; | |
972 | ||
b0697053 MF |
973 | mlog_entry("(inode1 = %llu, inode2 = %llu)\n", |
974 | (unsigned long long)oi1->ip_blkno, | |
975 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 976 | |
ccd979bd MF |
977 | if (*bh1) |
978 | *bh1 = NULL; | |
979 | if (*bh2) | |
980 | *bh2 = NULL; | |
981 | ||
982 | /* we always want to lock the one with the lower lockid first. */ | |
983 | if (oi1->ip_blkno != oi2->ip_blkno) { | |
984 | if (oi1->ip_blkno < oi2->ip_blkno) { | |
985 | /* switch id1 and id2 around */ | |
986 | mlog(0, "switching them around...\n"); | |
987 | tmpbh = bh2; | |
988 | bh2 = bh1; | |
989 | bh1 = tmpbh; | |
990 | ||
991 | tmpinode = inode2; | |
992 | inode2 = inode1; | |
993 | inode1 = tmpinode; | |
994 | } | |
995 | /* lock id2 */ | |
cb25797d JK |
996 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
997 | OI_LS_RENAME1); | |
ccd979bd MF |
998 | if (status < 0) { |
999 | if (status != -ENOENT) | |
1000 | mlog_errno(status); | |
1001 | goto bail; | |
1002 | } | |
1003 | } | |
8d5596c6 | 1004 | |
ccd979bd | 1005 | /* lock id1 */ |
cb25797d | 1006 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, OI_LS_RENAME2); |
ccd979bd | 1007 | if (status < 0) { |
8d5596c6 MF |
1008 | /* |
1009 | * An error return must mean that no cluster locks | |
1010 | * were held on function exit. | |
1011 | */ | |
1012 | if (oi1->ip_blkno != oi2->ip_blkno) | |
e63aecb6 | 1013 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 | 1014 | |
ccd979bd MF |
1015 | if (status != -ENOENT) |
1016 | mlog_errno(status); | |
ccd979bd | 1017 | } |
8d5596c6 | 1018 | |
ccd979bd MF |
1019 | bail: |
1020 | mlog_exit(status); | |
1021 | return status; | |
1022 | } | |
1023 | ||
8d5596c6 MF |
1024 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
1025 | { | |
e63aecb6 | 1026 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
1027 | |
1028 | if (inode1 != inode2) | |
e63aecb6 | 1029 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1030 | } |
1031 | ||
ccd979bd MF |
1032 | static int ocfs2_rename(struct inode *old_dir, |
1033 | struct dentry *old_dentry, | |
1034 | struct inode *new_dir, | |
1035 | struct dentry *new_dentry) | |
1036 | { | |
4a12ca3a MF |
1037 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1038 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
ccd979bd MF |
1039 | struct inode *old_inode = old_dentry->d_inode; |
1040 | struct inode *new_inode = new_dentry->d_inode; | |
5098c27b | 1041 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1042 | struct ocfs2_dinode *newfe = NULL; |
1043 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
ccd979bd | 1044 | struct buffer_head *newfe_bh = NULL; |
592282cf | 1045 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd | 1046 | struct ocfs2_super *osb = NULL; |
5b6a3a2b | 1047 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1048 | handle_t *handle = NULL; |
ccd979bd MF |
1049 | struct buffer_head *old_dir_bh = NULL; |
1050 | struct buffer_head *new_dir_bh = NULL; | |
592282cf | 1051 | nlink_t old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1052 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1053 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1054 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1055 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1056 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1057 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
ccd979bd MF |
1058 | |
1059 | /* At some point it might be nice to break this function up a | |
1060 | * bit. */ | |
1061 | ||
1062 | mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p, from='%.*s' to='%.*s')\n", | |
1063 | old_dir, old_dentry, new_dir, new_dentry, | |
1064 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1065 | new_dentry->d_name.len, new_dentry->d_name.name); | |
1066 | ||
871a2931 CH |
1067 | dquot_initialize(old_dir); |
1068 | dquot_initialize(new_dir); | |
907f4554 | 1069 | |
ccd979bd MF |
1070 | osb = OCFS2_SB(old_dir->i_sb); |
1071 | ||
1072 | if (new_inode) { | |
1073 | if (!igrab(new_inode)) | |
1074 | BUG(); | |
1075 | } | |
1076 | ||
1b3c3714 | 1077 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1078 | * a/b/c |
1079 | * a/d | |
1080 | * a,b,c, and d are all directories. | |
1081 | * | |
1082 | * from cwd of 'a' on both nodes: | |
1083 | * node1: mv b/c d | |
1084 | * node2: mv d b/c | |
1085 | * | |
1086 | * And that's why, just like the VFS, we need a file system | |
1087 | * rename lock. */ | |
5dabd695 | 1088 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1089 | status = ocfs2_rename_lock(osb); |
1090 | if (status < 0) { | |
1091 | mlog_errno(status); | |
1092 | goto bail; | |
1093 | } | |
1094 | rename_lock = 1; | |
1095 | } | |
1096 | ||
ccd979bd | 1097 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 MF |
1098 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
1099 | &new_dir_bh, new_dir); | |
ccd979bd MF |
1100 | if (status < 0) { |
1101 | mlog_errno(status); | |
1102 | goto bail; | |
1103 | } | |
8d5596c6 | 1104 | parents_locked = 1; |
ccd979bd MF |
1105 | |
1106 | /* make sure both dirs have bhs | |
1107 | * get an extra ref on old_dir_bh if old==new */ | |
1108 | if (!new_dir_bh) { | |
1109 | if (old_dir_bh) { | |
1110 | new_dir_bh = old_dir_bh; | |
1111 | get_bh(new_dir_bh); | |
1112 | } else { | |
1113 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1114 | status = -EIO; | |
1115 | goto bail; | |
1116 | } | |
1117 | } | |
1118 | ||
379dfe9d | 1119 | /* |
592282cf | 1120 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1121 | * also ensures that the downconvert thread on other nodes |
1122 | * won't have to concurrently downconvert the inode and the | |
1123 | * dentry locks. | |
379dfe9d | 1124 | */ |
cb25797d JK |
1125 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
1126 | OI_LS_PARENT); | |
379dfe9d MF |
1127 | if (status < 0) { |
1128 | if (status != -ENOENT) | |
ccd979bd | 1129 | mlog_errno(status); |
379dfe9d MF |
1130 | goto bail; |
1131 | } | |
8d5596c6 | 1132 | old_child_locked = 1; |
ccd979bd | 1133 | |
379dfe9d MF |
1134 | status = ocfs2_remote_dentry_delete(old_dentry); |
1135 | if (status < 0) { | |
1136 | mlog_errno(status); | |
1137 | goto bail; | |
1138 | } | |
1139 | ||
1140 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1141 | u64 old_inode_parent; |
1142 | ||
4a12ca3a | 1143 | update_dot_dot = 1; |
38760e24 | 1144 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1145 | old_inode, |
1146 | &old_inode_dot_dot_res); | |
38760e24 MF |
1147 | if (status) { |
1148 | status = -EIO; | |
ccd979bd | 1149 | goto bail; |
38760e24 | 1150 | } |
ccd979bd | 1151 | |
38760e24 MF |
1152 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1153 | status = -EIO; | |
ccd979bd | 1154 | goto bail; |
38760e24 MF |
1155 | } |
1156 | ||
1157 | if (!new_inode && new_dir != old_dir && | |
198a1ca3 | 1158 | new_dir->i_nlink >= ocfs2_link_max(osb)) { |
38760e24 | 1159 | status = -EMLINK; |
ccd979bd | 1160 | goto bail; |
38760e24 | 1161 | } |
ccd979bd MF |
1162 | } |
1163 | ||
5b6a3a2b MF |
1164 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1165 | old_dentry->d_name.len, | |
1166 | &old_de_ino); | |
1167 | if (status) { | |
1168 | status = -ENOENT; | |
ccd979bd | 1169 | goto bail; |
5b6a3a2b | 1170 | } |
ccd979bd MF |
1171 | |
1172 | /* | |
1173 | * Check for inode number is _not_ due to possible IO errors. | |
1174 | * We might rmdir the source, keep it as pwd of some process | |
1175 | * and merrily kill the link to whatever was created under the | |
1176 | * same name. Goodbye sticky bit ;-< | |
1177 | */ | |
5b6a3a2b MF |
1178 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1179 | status = -ENOENT; | |
ccd979bd | 1180 | goto bail; |
5b6a3a2b | 1181 | } |
ccd979bd MF |
1182 | |
1183 | /* check if the target already exists (in which case we need | |
1184 | * to delete it */ | |
1185 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1186 | new_dentry->d_name.len, | |
4a12ca3a MF |
1187 | &newfe_blkno, new_dir, |
1188 | &target_lookup_res); | |
ccd979bd MF |
1189 | /* The only error we allow here is -ENOENT because the new |
1190 | * file not existing is perfectly valid. */ | |
1191 | if ((status < 0) && (status != -ENOENT)) { | |
1192 | /* If we cannot find the file specified we should just */ | |
1193 | /* return the error... */ | |
1194 | mlog_errno(status); | |
1195 | goto bail; | |
1196 | } | |
4a12ca3a MF |
1197 | if (status == 0) |
1198 | target_exists = 1; | |
ccd979bd | 1199 | |
4a12ca3a | 1200 | if (!target_exists && new_inode) { |
e325a88f SE |
1201 | /* |
1202 | * Target was unlinked by another node while we were | |
1203 | * waiting to get to ocfs2_rename(). There isn't | |
1204 | * anything we can do here to help the situation, so | |
1205 | * bubble up the appropriate error. | |
1206 | */ | |
1207 | status = -ENOENT; | |
1208 | goto bail; | |
1209 | } | |
ccd979bd MF |
1210 | |
1211 | /* In case we need to overwrite an existing file, we blow it | |
1212 | * away first */ | |
4a12ca3a | 1213 | if (target_exists) { |
ccd979bd MF |
1214 | /* VFS didn't think there existed an inode here, but |
1215 | * someone else in the cluster must have raced our | |
1216 | * rename to create one. Today we error cleanly, in | |
1217 | * the future we should consider calling iget to build | |
1218 | * a new struct inode for this entry. */ | |
1219 | if (!new_inode) { | |
1220 | status = -EACCES; | |
1221 | ||
1222 | mlog(0, "We found an inode for name %.*s but VFS " | |
1223 | "didn't give us one.\n", new_dentry->d_name.len, | |
1224 | new_dentry->d_name.name); | |
1225 | goto bail; | |
1226 | } | |
1227 | ||
1228 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1229 | status = -EACCES; | |
1230 | ||
b0697053 MF |
1231 | mlog(0, "Inode %llu and dir %llu disagree. flags = %x\n", |
1232 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, | |
1233 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1234 | OCFS2_I(new_inode)->ip_flags); |
1235 | goto bail; | |
1236 | } | |
1237 | ||
e63aecb6 | 1238 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1239 | if (status < 0) { |
1240 | if (status != -ENOENT) | |
1241 | mlog_errno(status); | |
1242 | goto bail; | |
1243 | } | |
8d5596c6 | 1244 | new_child_locked = 1; |
ccd979bd | 1245 | |
379dfe9d | 1246 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1247 | if (status < 0) { |
1248 | mlog_errno(status); | |
1249 | goto bail; | |
1250 | } | |
1251 | ||
1252 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1253 | ||
4a12ca3a MF |
1254 | mlog(0, "aha rename over existing... new_blkno=%llu " |
1255 | "newfebh=%p bhblocknr=%llu\n", | |
b0697053 | 1256 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1257 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1258 | ||
1259 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1260 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
19bd341f TM |
1261 | OCFS2_I(new_inode)->ip_blkno, |
1262 | orphan_name, &orphan_insert); | |
ccd979bd MF |
1263 | if (status < 0) { |
1264 | mlog_errno(status); | |
1265 | goto bail; | |
1266 | } | |
1267 | } | |
1268 | } else { | |
1269 | BUG_ON(new_dentry->d_parent->d_inode != new_dir); | |
1270 | ||
1271 | status = ocfs2_check_dir_for_entry(new_dir, | |
1272 | new_dentry->d_name.name, | |
1273 | new_dentry->d_name.len); | |
1274 | if (status) | |
1275 | goto bail; | |
1276 | ||
1277 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1278 | new_dentry->d_name.name, | |
1279 | new_dentry->d_name.len, | |
4a12ca3a | 1280 | &target_insert); |
ccd979bd MF |
1281 | if (status < 0) { |
1282 | mlog_errno(status); | |
1283 | goto bail; | |
1284 | } | |
1285 | } | |
1286 | ||
a90714c1 | 1287 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1288 | if (IS_ERR(handle)) { |
1289 | status = PTR_ERR(handle); | |
1290 | handle = NULL; | |
1291 | mlog_errno(status); | |
1292 | goto bail; | |
1293 | } | |
1294 | ||
4a12ca3a | 1295 | if (target_exists) { |
ccd979bd | 1296 | if (S_ISDIR(new_inode->i_mode)) { |
b80b549c MF |
1297 | if (new_inode->i_nlink != 2 || |
1298 | !ocfs2_empty_dir(new_inode)) { | |
ccd979bd MF |
1299 | status = -ENOTEMPTY; |
1300 | goto bail; | |
1301 | } | |
1302 | } | |
0cf2f763 JB |
1303 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
1304 | newfe_bh, | |
13723d00 | 1305 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1306 | if (status < 0) { |
1307 | mlog_errno(status); | |
1308 | goto bail; | |
1309 | } | |
1310 | ||
1311 | if (S_ISDIR(new_inode->i_mode) || | |
198a1ca3 | 1312 | (ocfs2_read_links_count(newfe) == 1)) { |
ccd979bd | 1313 | status = ocfs2_orphan_add(osb, handle, new_inode, |
3939fda4 | 1314 | newfe_bh, orphan_name, |
4a12ca3a | 1315 | &orphan_insert, orphan_dir); |
ccd979bd MF |
1316 | if (status < 0) { |
1317 | mlog_errno(status); | |
1318 | goto bail; | |
1319 | } | |
1320 | } | |
1321 | ||
1322 | /* change the dirent to point to the correct inode */ | |
4a12ca3a MF |
1323 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1324 | old_inode); | |
ccd979bd MF |
1325 | if (status < 0) { |
1326 | mlog_errno(status); | |
1327 | goto bail; | |
1328 | } | |
ccd979bd | 1329 | new_dir->i_version++; |
ccd979bd MF |
1330 | |
1331 | if (S_ISDIR(new_inode->i_mode)) | |
198a1ca3 | 1332 | ocfs2_set_links_count(newfe, 0); |
ccd979bd | 1333 | else |
198a1ca3 | 1334 | ocfs2_add_links_count(newfe, -1); |
ccd979bd MF |
1335 | |
1336 | status = ocfs2_journal_dirty(handle, newfe_bh); | |
1337 | if (status < 0) { | |
1338 | mlog_errno(status); | |
1339 | goto bail; | |
1340 | } | |
1341 | } else { | |
1342 | /* if the name was not found in new_dir, add it now */ | |
1343 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1344 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1345 | new_dir_bh, &target_insert); |
ccd979bd MF |
1346 | } |
1347 | ||
1348 | old_inode->i_ctime = CURRENT_TIME; | |
1349 | mark_inode_dirty(old_inode); | |
480214d7 | 1350 | |
0cf2f763 JB |
1351 | status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), |
1352 | old_inode_bh, | |
13723d00 | 1353 | OCFS2_JOURNAL_ACCESS_WRITE); |
480214d7 SM |
1354 | if (status >= 0) { |
1355 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1356 | ||
1357 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); | |
1358 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); | |
1359 | ||
1360 | status = ocfs2_journal_dirty(handle, old_inode_bh); | |
1361 | if (status < 0) | |
1362 | mlog_errno(status); | |
1363 | } else | |
1364 | mlog_errno(status); | |
ccd979bd | 1365 | |
5b6a3a2b MF |
1366 | /* |
1367 | * Now that the name has been added to new_dir, remove the old name. | |
1368 | * | |
1369 | * We don't keep any directory entry context around until now | |
1370 | * because the insert might have changed the type of directory | |
1371 | * we're dealing with. | |
1372 | */ | |
4a12ca3a MF |
1373 | status = ocfs2_find_entry(old_dentry->d_name.name, |
1374 | old_dentry->d_name.len, old_dir, | |
1375 | &old_entry_lookup); | |
1376 | if (status) | |
5b6a3a2b | 1377 | goto bail; |
5b6a3a2b | 1378 | |
4a12ca3a | 1379 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
ccd979bd MF |
1380 | if (status < 0) { |
1381 | mlog_errno(status); | |
1382 | goto bail; | |
1383 | } | |
1384 | ||
1385 | if (new_inode) { | |
1386 | new_inode->i_nlink--; | |
1387 | new_inode->i_ctime = CURRENT_TIME; | |
1388 | } | |
1389 | old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME; | |
4a12ca3a MF |
1390 | |
1391 | if (update_dot_dot) { | |
1392 | status = ocfs2_update_entry(old_inode, handle, | |
1393 | &old_inode_dot_dot_res, new_dir); | |
ccd979bd MF |
1394 | old_dir->i_nlink--; |
1395 | if (new_inode) { | |
1396 | new_inode->i_nlink--; | |
1397 | } else { | |
d8c76e6f | 1398 | inc_nlink(new_dir); |
ccd979bd MF |
1399 | mark_inode_dirty(new_dir); |
1400 | } | |
1401 | } | |
1402 | mark_inode_dirty(old_dir); | |
592282cf MF |
1403 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1404 | if (new_inode) { | |
ccd979bd | 1405 | mark_inode_dirty(new_inode); |
592282cf MF |
1406 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1407 | } | |
ccd979bd | 1408 | |
592282cf MF |
1409 | if (old_dir != new_dir) { |
1410 | /* Keep the same times on both directories.*/ | |
1411 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; | |
1412 | ||
1413 | /* | |
1414 | * This will also pick up the i_nlink change from the | |
1415 | * block above. | |
1416 | */ | |
1417 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1418 | } | |
ccd979bd MF |
1419 | |
1420 | if (old_dir_nlink != old_dir->i_nlink) { | |
1421 | if (!old_dir_bh) { | |
1422 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1423 | "%llu from %d to %d but bh is NULL!\n", |
1424 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1425 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1426 | } else { |
1427 | struct ocfs2_dinode *fe; | |
0cf2f763 JB |
1428 | status = ocfs2_journal_access_di(handle, |
1429 | INODE_CACHE(old_dir), | |
1430 | old_dir_bh, | |
1431 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd | 1432 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
198a1ca3 | 1433 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
ccd979bd MF |
1434 | status = ocfs2_journal_dirty(handle, old_dir_bh); |
1435 | } | |
1436 | } | |
379dfe9d | 1437 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1438 | status = 0; |
1439 | bail: | |
1440 | if (rename_lock) | |
1441 | ocfs2_rename_unlock(osb); | |
1442 | ||
1443 | if (handle) | |
02dc1af4 | 1444 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1445 | |
8d5596c6 MF |
1446 | if (parents_locked) |
1447 | ocfs2_double_unlock(old_dir, new_dir); | |
1448 | ||
1449 | if (old_child_locked) | |
e63aecb6 | 1450 | ocfs2_inode_unlock(old_inode, 1); |
8d5596c6 MF |
1451 | |
1452 | if (new_child_locked) | |
e63aecb6 | 1453 | ocfs2_inode_unlock(new_inode, 1); |
8d5596c6 | 1454 | |
5098c27b MF |
1455 | if (orphan_dir) { |
1456 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1457 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
1458 | mutex_unlock(&orphan_dir->i_mutex); |
1459 | iput(orphan_dir); | |
1460 | } | |
1461 | ||
ccd979bd MF |
1462 | if (new_inode) |
1463 | sync_mapping_buffers(old_inode->i_mapping); | |
1464 | ||
1465 | if (new_inode) | |
1466 | iput(new_inode); | |
4a12ca3a MF |
1467 | |
1468 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1469 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1470 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1471 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1472 | ocfs2_free_dir_lookup_result(&target_insert); | |
1473 | ||
a81cb88b MF |
1474 | brelse(newfe_bh); |
1475 | brelse(old_inode_bh); | |
1476 | brelse(old_dir_bh); | |
1477 | brelse(new_dir_bh); | |
ccd979bd MF |
1478 | |
1479 | mlog_exit(status); | |
1480 | ||
1481 | return status; | |
1482 | } | |
1483 | ||
1484 | /* | |
1485 | * we expect i_size = strlen(symname). Copy symname into the file | |
1486 | * data, including the null terminator. | |
1487 | */ | |
1488 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1489 | handle_t *handle, |
ccd979bd MF |
1490 | struct inode *inode, |
1491 | const char *symname) | |
1492 | { | |
1493 | struct buffer_head **bhs = NULL; | |
1494 | const char *c; | |
1495 | struct super_block *sb = osb->sb; | |
4f902c37 | 1496 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1497 | int virtual, blocks, status, i, bytes_left; |
1498 | ||
1499 | bytes_left = i_size_read(inode) + 1; | |
1500 | /* we can't trust i_blocks because we're actually going to | |
1501 | * write i_size + 1 bytes. */ | |
1502 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1503 | ||
5515eff8 AM |
1504 | mlog_entry("i_blocks = %llu, i_size = %llu, blocks = %d\n", |
1505 | (unsigned long long)inode->i_blocks, | |
1506 | i_size_read(inode), blocks); | |
ccd979bd MF |
1507 | |
1508 | /* Sanity check -- make sure we're going to fit. */ | |
1509 | if (bytes_left > | |
1510 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1511 | status = -EIO; | |
1512 | mlog_errno(status); | |
1513 | goto bail; | |
1514 | } | |
1515 | ||
1516 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1517 | if (!bhs) { | |
1518 | status = -ENOMEM; | |
1519 | mlog_errno(status); | |
1520 | goto bail; | |
1521 | } | |
1522 | ||
49cb8d2d MF |
1523 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1524 | NULL); | |
ccd979bd MF |
1525 | if (status < 0) { |
1526 | mlog_errno(status); | |
1527 | goto bail; | |
1528 | } | |
1529 | ||
1530 | /* links can never be larger than one cluster so we know this | |
1531 | * is all going to be contiguous, but do a sanity check | |
1532 | * anyway. */ | |
1533 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1534 | status = -EIO; | |
1535 | mlog_errno(status); | |
1536 | goto bail; | |
1537 | } | |
1538 | ||
1539 | virtual = 0; | |
1540 | while(bytes_left > 0) { | |
1541 | c = &symname[virtual * sb->s_blocksize]; | |
1542 | ||
1543 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1544 | if (!bhs[virtual]) { | |
1545 | status = -ENOMEM; | |
1546 | mlog_errno(status); | |
1547 | goto bail; | |
1548 | } | |
8cb471e8 JB |
1549 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
1550 | bhs[virtual]); | |
ccd979bd | 1551 | |
0cf2f763 JB |
1552 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
1553 | bhs[virtual], | |
ccd979bd MF |
1554 | OCFS2_JOURNAL_ACCESS_CREATE); |
1555 | if (status < 0) { | |
1556 | mlog_errno(status); | |
1557 | goto bail; | |
1558 | } | |
1559 | ||
1560 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1561 | ||
1562 | memcpy(bhs[virtual]->b_data, c, | |
1563 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1564 | bytes_left); | |
1565 | ||
1566 | status = ocfs2_journal_dirty(handle, bhs[virtual]); | |
1567 | if (status < 0) { | |
1568 | mlog_errno(status); | |
1569 | goto bail; | |
1570 | } | |
1571 | ||
1572 | virtual++; | |
1573 | p_blkno++; | |
1574 | bytes_left -= sb->s_blocksize; | |
1575 | } | |
1576 | ||
1577 | status = 0; | |
1578 | bail: | |
1579 | ||
1580 | if (bhs) { | |
1581 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1582 | brelse(bhs[i]); |
ccd979bd MF |
1583 | kfree(bhs); |
1584 | } | |
1585 | ||
1586 | mlog_exit(status); | |
1587 | return status; | |
1588 | } | |
1589 | ||
1590 | static int ocfs2_symlink(struct inode *dir, | |
1591 | struct dentry *dentry, | |
1592 | const char *symname) | |
1593 | { | |
1594 | int status, l, credits; | |
1595 | u64 newsize; | |
1596 | struct ocfs2_super *osb = NULL; | |
1597 | struct inode *inode = NULL; | |
1598 | struct super_block *sb; | |
1599 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1600 | struct buffer_head *parent_fe_bh = NULL; |
1601 | struct ocfs2_dinode *fe = NULL; | |
1602 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1603 | handle_t *handle = NULL; |
ccd979bd MF |
1604 | struct ocfs2_alloc_context *inode_ac = NULL; |
1605 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1606 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1607 | int want_clusters = 0; | |
1608 | int xattr_credits = 0; | |
1609 | struct ocfs2_security_xattr_info si = { | |
1610 | .enable = 1, | |
1611 | }; | |
a90714c1 | 1612 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1613 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
1614 | |
1615 | mlog_entry("(0x%p, 0x%p, symname='%s' actual='%.*s')\n", dir, | |
1616 | dentry, symname, dentry->d_name.len, dentry->d_name.name); | |
1617 | ||
871a2931 | 1618 | dquot_initialize(dir); |
907f4554 | 1619 | |
ccd979bd MF |
1620 | sb = dir->i_sb; |
1621 | osb = OCFS2_SB(sb); | |
1622 | ||
1623 | l = strlen(symname) + 1; | |
1624 | ||
1625 | credits = ocfs2_calc_symlink_credits(sb); | |
1626 | ||
ccd979bd | 1627 | /* lock the parent directory */ |
e63aecb6 | 1628 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1629 | if (status < 0) { |
1630 | if (status != -ENOENT) | |
1631 | mlog_errno(status); | |
6d8fc40e | 1632 | return status; |
ccd979bd MF |
1633 | } |
1634 | ||
1635 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
198a1ca3 | 1636 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
1637 | /* can't make a file in a deleted directory. */ |
1638 | status = -ENOENT; | |
1639 | goto bail; | |
1640 | } | |
1641 | ||
1642 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1643 | dentry->d_name.len); | |
1644 | if (status) | |
1645 | goto bail; | |
1646 | ||
1647 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1648 | dentry->d_name.name, | |
4a12ca3a | 1649 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1650 | if (status < 0) { |
1651 | mlog_errno(status); | |
1652 | goto bail; | |
1653 | } | |
1654 | ||
da5cbf2f | 1655 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1656 | if (status < 0) { |
1657 | if (status != -ENOSPC) | |
1658 | mlog_errno(status); | |
1659 | goto bail; | |
1660 | } | |
1661 | ||
f5d36202 TY |
1662 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
1663 | if (!inode) { | |
1664 | status = -ENOMEM; | |
1665 | mlog_errno(status); | |
1666 | goto bail; | |
1667 | } | |
1668 | ||
534eaddd TY |
1669 | /* get security xattr */ |
1670 | status = ocfs2_init_security_get(inode, dir, &si); | |
1671 | if (status) { | |
1672 | if (status == -EOPNOTSUPP) | |
1673 | si.enable = 0; | |
1674 | else { | |
1675 | mlog_errno(status); | |
1676 | goto bail; | |
1677 | } | |
1678 | } | |
1679 | ||
1680 | /* calculate meta data/clusters for setting security xattr */ | |
1681 | if (si.enable) { | |
1682 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1683 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1684 | if (status < 0) { |
534eaddd | 1685 | mlog_errno(status); |
ccd979bd MF |
1686 | goto bail; |
1687 | } | |
1688 | } | |
1689 | ||
534eaddd TY |
1690 | /* don't reserve bitmap space for fast symlinks. */ |
1691 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1692 | want_clusters += 1; | |
1693 | ||
1694 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1695 | if (status < 0) { | |
1696 | if (status != -ENOSPC) | |
1697 | mlog_errno(status); | |
1698 | goto bail; | |
1699 | } | |
1700 | ||
1701 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1702 | if (IS_ERR(handle)) { |
1703 | status = PTR_ERR(handle); | |
1704 | handle = NULL; | |
1705 | mlog_errno(status); | |
1706 | goto bail; | |
1707 | } | |
1708 | ||
63936dda CH |
1709 | status = dquot_alloc_inode(inode); |
1710 | if (status) | |
a90714c1 | 1711 | goto bail; |
a90714c1 JK |
1712 | did_quota_inode = 1; |
1713 | ||
19bd341f TM |
1714 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, |
1715 | inode->i_mode, dentry->d_name.len, | |
1716 | dentry->d_name.name); | |
1717 | ||
1718 | status = ocfs2_mknod_locked(osb, dir, inode, | |
f5d36202 TY |
1719 | 0, &new_fe_bh, parent_fe_bh, handle, |
1720 | inode_ac); | |
ccd979bd MF |
1721 | if (status < 0) { |
1722 | mlog_errno(status); | |
1723 | goto bail; | |
1724 | } | |
1725 | ||
1726 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1727 | inode->i_rdev = 0; | |
1728 | newsize = l - 1; | |
1729 | if (l > ocfs2_fast_symlink_chars(sb)) { | |
dcd0538f MF |
1730 | u32 offset = 0; |
1731 | ||
ccd979bd | 1732 | inode->i_op = &ocfs2_symlink_inode_operations; |
5dd4056d CH |
1733 | status = dquot_alloc_space_nodirty(inode, |
1734 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1735 | if (status) | |
a90714c1 | 1736 | goto bail; |
a90714c1 | 1737 | did_quota = 1; |
0eb8d47e TM |
1738 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1739 | new_fe_bh, | |
1740 | handle, data_ac, NULL, | |
1741 | NULL); | |
ccd979bd MF |
1742 | if (status < 0) { |
1743 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1744 | mlog(ML_ERROR, |
1745 | "Failed to extend file to %llu\n", | |
1746 | (unsigned long long)newsize); | |
ccd979bd MF |
1747 | mlog_errno(status); |
1748 | status = -ENOSPC; | |
1749 | } | |
1750 | goto bail; | |
1751 | } | |
1752 | i_size_write(inode, newsize); | |
8110b073 | 1753 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd MF |
1754 | } else { |
1755 | inode->i_op = &ocfs2_fast_symlink_inode_operations; | |
1756 | memcpy((char *) fe->id2.i_symlink, symname, l); | |
1757 | i_size_write(inode, newsize); | |
1758 | inode->i_blocks = 0; | |
1759 | } | |
1760 | ||
1761 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1762 | if (status < 0) { | |
1763 | mlog_errno(status); | |
1764 | goto bail; | |
1765 | } | |
1766 | ||
1767 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
1768 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
1769 | symname); | |
1770 | if (status < 0) { | |
1771 | mlog_errno(status); | |
1772 | goto bail; | |
1773 | } | |
1774 | } | |
1775 | ||
534eaddd TY |
1776 | if (si.enable) { |
1777 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
1778 | xattr_ac, data_ac); | |
1779 | if (status < 0) { | |
1780 | mlog_errno(status); | |
1781 | goto bail; | |
1782 | } | |
1783 | } | |
1784 | ||
a9743fcd MF |
1785 | /* |
1786 | * Do this before adding the entry to the directory. We add | |
1787 | * also set d_op after success so that ->d_iput() will cleanup | |
1788 | * the dentry lock even if ocfs2_add_entry() fails below. | |
1789 | */ | |
1790 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); | |
1791 | if (status) { | |
ccd979bd MF |
1792 | mlog_errno(status); |
1793 | goto bail; | |
1794 | } | |
a9743fcd | 1795 | dentry->d_op = &ocfs2_dentry_ops; |
ccd979bd | 1796 | |
a9743fcd MF |
1797 | status = ocfs2_add_entry(handle, dentry, inode, |
1798 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
1799 | &lookup); | |
1800 | if (status < 0) { | |
379dfe9d MF |
1801 | mlog_errno(status); |
1802 | goto bail; | |
1803 | } | |
1804 | ||
ccd979bd | 1805 | insert_inode_hash(inode); |
ccd979bd MF |
1806 | d_instantiate(dentry, inode); |
1807 | bail: | |
a90714c1 | 1808 | if (status < 0 && did_quota) |
5dd4056d | 1809 | dquot_free_space_nodirty(inode, |
a90714c1 JK |
1810 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
1811 | if (status < 0 && did_quota_inode) | |
63936dda | 1812 | dquot_free_inode(inode); |
ccd979bd | 1813 | if (handle) |
02dc1af4 | 1814 | ocfs2_commit_trans(osb, handle); |
6d8fc40e | 1815 | |
e63aecb6 | 1816 | ocfs2_inode_unlock(dir, 1); |
6d8fc40e | 1817 | |
a81cb88b MF |
1818 | brelse(new_fe_bh); |
1819 | brelse(parent_fe_bh); | |
534eaddd TY |
1820 | kfree(si.name); |
1821 | kfree(si.value); | |
4a12ca3a | 1822 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
1823 | if (inode_ac) |
1824 | ocfs2_free_alloc_context(inode_ac); | |
1825 | if (data_ac) | |
1826 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
1827 | if (xattr_ac) |
1828 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 | 1829 | if ((status < 0) && inode) { |
ab41fdc8 | 1830 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
f5d36202 | 1831 | clear_nlink(inode); |
ccd979bd | 1832 | iput(inode); |
f5d36202 | 1833 | } |
ccd979bd MF |
1834 | |
1835 | mlog_exit(status); | |
1836 | ||
1837 | return status; | |
1838 | } | |
1839 | ||
ccd979bd MF |
1840 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
1841 | { | |
1842 | int status, namelen; | |
1843 | ||
1844 | mlog_entry_void(); | |
1845 | ||
b0697053 MF |
1846 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
1847 | (long long)blkno); | |
ccd979bd MF |
1848 | if (namelen <= 0) { |
1849 | if (namelen) | |
1850 | status = namelen; | |
1851 | else | |
1852 | status = -EINVAL; | |
1853 | mlog_errno(status); | |
1854 | goto bail; | |
1855 | } | |
1856 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
1857 | status = -EINVAL; | |
1858 | mlog_errno(status); | |
1859 | goto bail; | |
1860 | } | |
1861 | ||
1862 | mlog(0, "built filename '%s' for orphan dir (len=%d)\n", name, | |
1863 | namelen); | |
1864 | ||
1865 | status = 0; | |
1866 | bail: | |
1867 | mlog_exit(status); | |
1868 | return status; | |
1869 | } | |
1870 | ||
1871 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
5098c27b | 1872 | struct inode **ret_orphan_dir, |
19bd341f | 1873 | u64 blkno, |
ccd979bd | 1874 | char *name, |
4a12ca3a | 1875 | struct ocfs2_dir_lookup_result *lookup) |
ccd979bd | 1876 | { |
5098c27b | 1877 | struct inode *orphan_dir_inode; |
ccd979bd MF |
1878 | struct buffer_head *orphan_dir_bh = NULL; |
1879 | int status = 0; | |
1880 | ||
19bd341f | 1881 | status = ocfs2_blkno_stringify(blkno, name); |
ccd979bd MF |
1882 | if (status < 0) { |
1883 | mlog_errno(status); | |
5098c27b | 1884 | return status; |
ccd979bd MF |
1885 | } |
1886 | ||
1887 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
1888 | ORPHAN_DIR_SYSTEM_INODE, | |
1889 | osb->slot_num); | |
1890 | if (!orphan_dir_inode) { | |
1891 | status = -ENOENT; | |
1892 | mlog_errno(status); | |
5098c27b | 1893 | return status; |
ccd979bd MF |
1894 | } |
1895 | ||
5098c27b MF |
1896 | mutex_lock(&orphan_dir_inode->i_mutex); |
1897 | ||
e63aecb6 | 1898 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
ccd979bd MF |
1899 | if (status < 0) { |
1900 | mlog_errno(status); | |
1901 | goto leave; | |
1902 | } | |
1903 | ||
1904 | status = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
1905 | orphan_dir_bh, name, | |
4a12ca3a | 1906 | OCFS2_ORPHAN_NAMELEN, lookup); |
ccd979bd | 1907 | if (status < 0) { |
e63aecb6 | 1908 | ocfs2_inode_unlock(orphan_dir_inode, 1); |
5098c27b | 1909 | |
ccd979bd MF |
1910 | mlog_errno(status); |
1911 | goto leave; | |
1912 | } | |
1913 | ||
5098c27b MF |
1914 | *ret_orphan_dir = orphan_dir_inode; |
1915 | ||
ccd979bd | 1916 | leave: |
5098c27b MF |
1917 | if (status) { |
1918 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
ccd979bd | 1919 | iput(orphan_dir_inode); |
5098c27b | 1920 | } |
ccd979bd | 1921 | |
a81cb88b | 1922 | brelse(orphan_dir_bh); |
ccd979bd MF |
1923 | |
1924 | mlog_exit(status); | |
1925 | return status; | |
1926 | } | |
1927 | ||
1928 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 1929 | handle_t *handle, |
ccd979bd | 1930 | struct inode *inode, |
3939fda4 | 1931 | struct buffer_head *fe_bh, |
ccd979bd | 1932 | char *name, |
4a12ca3a | 1933 | struct ocfs2_dir_lookup_result *lookup, |
5098c27b | 1934 | struct inode *orphan_dir_inode) |
ccd979bd | 1935 | { |
ccd979bd MF |
1936 | struct buffer_head *orphan_dir_bh = NULL; |
1937 | int status = 0; | |
1938 | struct ocfs2_dinode *orphan_fe; | |
3939fda4 | 1939 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; |
ccd979bd MF |
1940 | |
1941 | mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino); | |
1942 | ||
b657c95c | 1943 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
1944 | if (status < 0) { |
1945 | mlog_errno(status); | |
1946 | goto leave; | |
1947 | } | |
1948 | ||
0cf2f763 JB |
1949 | status = ocfs2_journal_access_di(handle, |
1950 | INODE_CACHE(orphan_dir_inode), | |
1951 | orphan_dir_bh, | |
13723d00 | 1952 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1953 | if (status < 0) { |
1954 | mlog_errno(status); | |
1955 | goto leave; | |
1956 | } | |
1957 | ||
1958 | /* we're a cluster, and nlink can change on disk from | |
1959 | * underneath us... */ | |
1960 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
1961 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 MF |
1962 | ocfs2_add_links_count(orphan_fe, 1); |
1963 | orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe); | |
ccd979bd MF |
1964 | |
1965 | status = ocfs2_journal_dirty(handle, orphan_dir_bh); | |
1966 | if (status < 0) { | |
1967 | mlog_errno(status); | |
1968 | goto leave; | |
1969 | } | |
1970 | ||
1971 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
1972 | OCFS2_ORPHAN_NAMELEN, inode, | |
1973 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 1974 | orphan_dir_bh, lookup); |
ccd979bd MF |
1975 | if (status < 0) { |
1976 | mlog_errno(status); | |
1977 | goto leave; | |
1978 | } | |
1979 | ||
3939fda4 TY |
1980 | /* |
1981 | * We're going to journal the change of i_flags and i_orphaned_slot. | |
1982 | * It's safe anyway, though some callers may duplicate the journaling. | |
1983 | * Journaling within the func just make the logic look more | |
1984 | * straightforward. | |
1985 | */ | |
1986 | status = ocfs2_journal_access_di(handle, | |
1987 | INODE_CACHE(inode), | |
1988 | fe_bh, | |
1989 | OCFS2_JOURNAL_ACCESS_WRITE); | |
1990 | if (status < 0) { | |
1991 | mlog_errno(status); | |
1992 | goto leave; | |
1993 | } | |
1994 | ||
ccd979bd | 1995 | le32_add_cpu(&fe->i_flags, OCFS2_ORPHANED_FL); |
d4cd1871 | 1996 | OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR; |
ccd979bd MF |
1997 | |
1998 | /* Record which orphan dir our inode now resides | |
1999 | * in. delete_inode will use this to determine which orphan | |
2000 | * dir to lock. */ | |
50008630 | 2001 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); |
ccd979bd | 2002 | |
3939fda4 TY |
2003 | ocfs2_journal_dirty(handle, fe_bh); |
2004 | ||
b0697053 MF |
2005 | mlog(0, "Inode %llu orphaned in slot %d\n", |
2006 | (unsigned long long)OCFS2_I(inode)->ip_blkno, osb->slot_num); | |
ccd979bd MF |
2007 | |
2008 | leave: | |
a81cb88b | 2009 | brelse(orphan_dir_bh); |
ccd979bd MF |
2010 | |
2011 | mlog_exit(status); | |
2012 | return status; | |
2013 | } | |
2014 | ||
2015 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
2016 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 2017 | handle_t *handle, |
ccd979bd MF |
2018 | struct inode *orphan_dir_inode, |
2019 | struct inode *inode, | |
2020 | struct buffer_head *orphan_dir_bh) | |
2021 | { | |
2022 | char name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2023 | struct ocfs2_dinode *orphan_fe; | |
2024 | int status = 0; | |
4a12ca3a | 2025 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
2026 | |
2027 | mlog_entry_void(); | |
2028 | ||
2029 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
2030 | if (status < 0) { | |
2031 | mlog_errno(status); | |
2032 | goto leave; | |
2033 | } | |
2034 | ||
b0697053 MF |
2035 | mlog(0, "removing '%s' from orphan dir %llu (namelen=%d)\n", |
2036 | name, (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
2037 | OCFS2_ORPHAN_NAMELEN); | |
ccd979bd MF |
2038 | |
2039 | /* find it's spot in the orphan directory */ | |
4a12ca3a MF |
2040 | status = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, orphan_dir_inode, |
2041 | &lookup); | |
2042 | if (status) { | |
ccd979bd MF |
2043 | mlog_errno(status); |
2044 | goto leave; | |
2045 | } | |
2046 | ||
2047 | /* remove it from the orphan directory */ | |
4a12ca3a | 2048 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
2049 | if (status < 0) { |
2050 | mlog_errno(status); | |
2051 | goto leave; | |
2052 | } | |
2053 | ||
0cf2f763 JB |
2054 | status = ocfs2_journal_access_di(handle, |
2055 | INODE_CACHE(orphan_dir_inode), | |
2056 | orphan_dir_bh, | |
13723d00 | 2057 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2058 | if (status < 0) { |
2059 | mlog_errno(status); | |
2060 | goto leave; | |
2061 | } | |
2062 | ||
2063 | /* do the i_nlink dance! :) */ | |
2064 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2065 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 MF |
2066 | ocfs2_add_links_count(orphan_fe, -1); |
2067 | orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe); | |
ccd979bd MF |
2068 | |
2069 | status = ocfs2_journal_dirty(handle, orphan_dir_bh); | |
2070 | if (status < 0) { | |
2071 | mlog_errno(status); | |
2072 | goto leave; | |
2073 | } | |
2074 | ||
2075 | leave: | |
4a12ca3a | 2076 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
2077 | |
2078 | mlog_exit(status); | |
2079 | return status; | |
2080 | } | |
2081 | ||
bc13d347 TM |
2082 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
2083 | int mode, | |
2084 | struct inode **new_inode) | |
2085 | { | |
2086 | int status, did_quota_inode = 0; | |
2087 | struct inode *inode = NULL; | |
2088 | struct inode *orphan_dir = NULL; | |
2089 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2090 | struct ocfs2_dinode *di = NULL; | |
2091 | handle_t *handle = NULL; | |
2092 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2093 | struct buffer_head *parent_di_bh = NULL; | |
2094 | struct buffer_head *new_di_bh = NULL; | |
2095 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2096 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
2097 | ||
2098 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2099 | if (status < 0) { | |
2100 | if (status != -ENOENT) | |
2101 | mlog_errno(status); | |
2102 | return status; | |
2103 | } | |
2104 | ||
2105 | /* | |
2106 | * We give the orphan dir the root blkno to fake an orphan name, | |
2107 | * and allocate enough space for our insertion. | |
2108 | */ | |
2109 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, | |
2110 | osb->root_blkno, | |
2111 | orphan_name, &orphan_insert); | |
2112 | if (status < 0) { | |
2113 | mlog_errno(status); | |
2114 | goto leave; | |
2115 | } | |
2116 | ||
2117 | /* reserve an inode spot */ | |
2118 | status = ocfs2_reserve_new_inode(osb, &inode_ac); | |
2119 | if (status < 0) { | |
2120 | if (status != -ENOSPC) | |
2121 | mlog_errno(status); | |
2122 | goto leave; | |
2123 | } | |
2124 | ||
2125 | inode = ocfs2_get_init_inode(dir, mode); | |
2126 | if (!inode) { | |
2127 | status = -ENOMEM; | |
2128 | mlog_errno(status); | |
2129 | goto leave; | |
2130 | } | |
2131 | ||
2132 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); | |
2133 | if (IS_ERR(handle)) { | |
2134 | status = PTR_ERR(handle); | |
2135 | handle = NULL; | |
2136 | mlog_errno(status); | |
2137 | goto leave; | |
2138 | } | |
2139 | ||
63936dda CH |
2140 | status = dquot_alloc_inode(inode); |
2141 | if (status) | |
bc13d347 | 2142 | goto leave; |
bc13d347 TM |
2143 | did_quota_inode = 1; |
2144 | ||
10cf1a02 | 2145 | inode->i_nlink = 0; |
bc13d347 TM |
2146 | /* do the real work now. */ |
2147 | status = ocfs2_mknod_locked(osb, dir, inode, | |
2148 | 0, &new_di_bh, parent_di_bh, handle, | |
2149 | inode_ac); | |
2150 | if (status < 0) { | |
2151 | mlog_errno(status); | |
2152 | goto leave; | |
2153 | } | |
2154 | ||
2155 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, orphan_name); | |
2156 | if (status < 0) { | |
2157 | mlog_errno(status); | |
2158 | goto leave; | |
2159 | } | |
2160 | ||
2161 | di = (struct ocfs2_dinode *)new_di_bh->b_data; | |
3939fda4 | 2162 | status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name, |
bc13d347 TM |
2163 | &orphan_insert, orphan_dir); |
2164 | if (status < 0) { | |
2165 | mlog_errno(status); | |
2166 | goto leave; | |
2167 | } | |
2168 | ||
2169 | /* get open lock so that only nodes can't remove it from orphan dir. */ | |
2170 | status = ocfs2_open_lock(inode); | |
2171 | if (status < 0) | |
2172 | mlog_errno(status); | |
2173 | ||
c7d260af | 2174 | insert_inode_hash(inode); |
bc13d347 TM |
2175 | leave: |
2176 | if (status < 0 && did_quota_inode) | |
63936dda | 2177 | dquot_free_inode(inode); |
bc13d347 TM |
2178 | if (handle) |
2179 | ocfs2_commit_trans(osb, handle); | |
2180 | ||
2181 | if (orphan_dir) { | |
2182 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
2183 | ocfs2_inode_unlock(orphan_dir, 1); | |
2184 | mutex_unlock(&orphan_dir->i_mutex); | |
2185 | iput(orphan_dir); | |
2186 | } | |
2187 | ||
2188 | if (status == -ENOSPC) | |
2189 | mlog(0, "Disk is full\n"); | |
2190 | ||
2191 | if ((status < 0) && inode) { | |
2192 | clear_nlink(inode); | |
2193 | iput(inode); | |
2194 | } | |
2195 | ||
2196 | if (inode_ac) | |
2197 | ocfs2_free_alloc_context(inode_ac); | |
2198 | ||
2199 | brelse(new_di_bh); | |
2200 | ||
2201 | if (!status) | |
2202 | *new_inode = inode; | |
2203 | ||
2204 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2205 | ||
2206 | ocfs2_inode_unlock(dir, 1); | |
2207 | brelse(parent_di_bh); | |
2208 | return status; | |
2209 | } | |
2210 | ||
2211 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, | |
2212 | struct inode *inode, | |
2213 | struct dentry *dentry) | |
2214 | { | |
2215 | int status = 0; | |
2216 | struct buffer_head *parent_di_bh = NULL; | |
2217 | handle_t *handle = NULL; | |
2218 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2219 | struct ocfs2_dinode *dir_di, *di; | |
2220 | struct inode *orphan_dir_inode = NULL; | |
2221 | struct buffer_head *orphan_dir_bh = NULL; | |
2222 | struct buffer_head *di_bh = NULL; | |
2223 | struct ocfs2_dir_lookup_result lookup = { NULL, }; | |
2224 | ||
2225 | mlog_entry("(0x%p, 0x%p, %.*s')\n", dir, dentry, | |
2226 | dentry->d_name.len, dentry->d_name.name); | |
2227 | ||
2228 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2229 | if (status < 0) { | |
2230 | if (status != -ENOENT) | |
2231 | mlog_errno(status); | |
2232 | return status; | |
2233 | } | |
2234 | ||
2235 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; | |
2236 | if (!dir_di->i_links_count) { | |
2237 | /* can't make a file in a deleted directory. */ | |
2238 | status = -ENOENT; | |
2239 | goto leave; | |
2240 | } | |
2241 | ||
2242 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
2243 | dentry->d_name.len); | |
2244 | if (status) | |
2245 | goto leave; | |
2246 | ||
2247 | /* get a spot inside the dir. */ | |
2248 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, | |
2249 | dentry->d_name.name, | |
2250 | dentry->d_name.len, &lookup); | |
2251 | if (status < 0) { | |
2252 | mlog_errno(status); | |
2253 | goto leave; | |
2254 | } | |
2255 | ||
2256 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2257 | ORPHAN_DIR_SYSTEM_INODE, | |
2258 | osb->slot_num); | |
2259 | if (!orphan_dir_inode) { | |
2260 | status = -EEXIST; | |
2261 | mlog_errno(status); | |
2262 | goto leave; | |
2263 | } | |
2264 | ||
2265 | mutex_lock(&orphan_dir_inode->i_mutex); | |
2266 | ||
2267 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2268 | if (status < 0) { | |
2269 | mlog_errno(status); | |
2270 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2271 | iput(orphan_dir_inode); | |
2272 | goto leave; | |
2273 | } | |
2274 | ||
2275 | status = ocfs2_read_inode_block(inode, &di_bh); | |
2276 | if (status < 0) { | |
2277 | mlog_errno(status); | |
2278 | goto orphan_unlock; | |
2279 | } | |
2280 | ||
2281 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); | |
2282 | if (IS_ERR(handle)) { | |
2283 | status = PTR_ERR(handle); | |
2284 | handle = NULL; | |
2285 | mlog_errno(status); | |
2286 | goto orphan_unlock; | |
2287 | } | |
2288 | ||
2289 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), | |
2290 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2291 | if (status < 0) { | |
2292 | mlog_errno(status); | |
2293 | goto out_commit; | |
2294 | } | |
2295 | ||
2296 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
2297 | orphan_dir_bh); | |
2298 | if (status < 0) { | |
2299 | mlog_errno(status); | |
2300 | goto out_commit; | |
2301 | } | |
2302 | ||
2303 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
2304 | le32_add_cpu(&di->i_flags, -OCFS2_ORPHANED_FL); | |
2305 | di->i_orphaned_slot = 0; | |
10cf1a02 TM |
2306 | inode->i_nlink = 1; |
2307 | ocfs2_set_links_count(di, inode->i_nlink); | |
bc13d347 TM |
2308 | ocfs2_journal_dirty(handle, di_bh); |
2309 | ||
2310 | status = ocfs2_add_entry(handle, dentry, inode, | |
2311 | OCFS2_I(inode)->ip_blkno, parent_di_bh, | |
2312 | &lookup); | |
2313 | if (status < 0) { | |
2314 | mlog_errno(status); | |
2315 | goto out_commit; | |
2316 | } | |
2317 | ||
2318 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
2319 | OCFS2_I(dir)->ip_blkno); | |
2320 | if (status) { | |
2321 | mlog_errno(status); | |
2322 | goto out_commit; | |
2323 | } | |
2324 | ||
bc13d347 TM |
2325 | dentry->d_op = &ocfs2_dentry_ops; |
2326 | d_instantiate(dentry, inode); | |
2327 | status = 0; | |
2328 | out_commit: | |
2329 | ocfs2_commit_trans(osb, handle); | |
2330 | orphan_unlock: | |
2331 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
2332 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
2333 | iput(orphan_dir_inode); | |
2334 | leave: | |
2335 | ||
2336 | ocfs2_inode_unlock(dir, 1); | |
2337 | ||
2338 | brelse(di_bh); | |
2339 | brelse(parent_di_bh); | |
2340 | brelse(orphan_dir_bh); | |
2341 | ||
2342 | ocfs2_free_dir_lookup_result(&lookup); | |
2343 | ||
2344 | mlog_exit(status); | |
2345 | ||
2346 | return status; | |
2347 | } | |
2348 | ||
92e1d5be | 2349 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2350 | .create = ocfs2_create, |
2351 | .lookup = ocfs2_lookup, | |
2352 | .link = ocfs2_link, | |
2353 | .unlink = ocfs2_unlink, | |
2354 | .rmdir = ocfs2_unlink, | |
2355 | .symlink = ocfs2_symlink, | |
2356 | .mkdir = ocfs2_mkdir, | |
2357 | .mknod = ocfs2_mknod, | |
2358 | .rename = ocfs2_rename, | |
2359 | .setattr = ocfs2_setattr, | |
2360 | .getattr = ocfs2_getattr, | |
d38eb8db | 2361 | .permission = ocfs2_permission, |
cf1d6c76 TY |
2362 | .setxattr = generic_setxattr, |
2363 | .getxattr = generic_getxattr, | |
2364 | .listxattr = ocfs2_listxattr, | |
2365 | .removexattr = generic_removexattr, | |
55f4946e | 2366 | .fiemap = ocfs2_fiemap, |
ccd979bd | 2367 | }; |