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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 TY |
71 | struct inode *inode, |
72 | struct dentry *dentry, | |
ccd979bd MF |
73 | dev_t dev, |
74 | struct buffer_head **new_fe_bh, | |
75 | struct buffer_head *parent_fe_bh, | |
1fabe148 | 76 | handle_t *handle, |
ccd979bd MF |
77 | struct ocfs2_alloc_context *inode_ac); |
78 | ||
ccd979bd | 79 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, |
5098c27b | 80 | struct inode **ret_orphan_dir, |
ccd979bd MF |
81 | struct inode *inode, |
82 | char *name, | |
4a12ca3a | 83 | struct ocfs2_dir_lookup_result *lookup); |
ccd979bd MF |
84 | |
85 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 86 | handle_t *handle, |
ccd979bd MF |
87 | struct inode *inode, |
88 | struct ocfs2_dinode *fe, | |
89 | char *name, | |
4a12ca3a | 90 | struct ocfs2_dir_lookup_result *lookup, |
5098c27b | 91 | struct inode *orphan_dir_inode); |
ccd979bd MF |
92 | |
93 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 94 | handle_t *handle, |
ccd979bd MF |
95 | struct inode *inode, |
96 | const char *symname); | |
97 | ||
ccd979bd MF |
98 | /* An orphan dir name is an 8 byte value, printed as a hex string */ |
99 | #define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64))) | |
100 | ||
101 | static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry, | |
102 | struct nameidata *nd) | |
103 | { | |
104 | int status; | |
105 | u64 blkno; | |
ccd979bd MF |
106 | struct inode *inode = NULL; |
107 | struct dentry *ret; | |
ccd979bd MF |
108 | struct ocfs2_inode_info *oi; |
109 | ||
110 | mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry, | |
111 | dentry->d_name.len, dentry->d_name.name); | |
112 | ||
113 | if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) { | |
114 | ret = ERR_PTR(-ENAMETOOLONG); | |
115 | goto bail; | |
116 | } | |
117 | ||
b0697053 MF |
118 | mlog(0, "find name %.*s in directory %llu\n", dentry->d_name.len, |
119 | dentry->d_name.name, (unsigned long long)OCFS2_I(dir)->ip_blkno); | |
ccd979bd | 120 | |
e63aecb6 | 121 | status = ocfs2_inode_lock(dir, NULL, 0); |
ccd979bd MF |
122 | if (status < 0) { |
123 | if (status != -ENOENT) | |
124 | mlog_errno(status); | |
125 | ret = ERR_PTR(status); | |
126 | goto bail; | |
127 | } | |
128 | ||
be94d117 MF |
129 | status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name, |
130 | dentry->d_name.len, &blkno); | |
ccd979bd MF |
131 | if (status < 0) |
132 | goto bail_add; | |
133 | ||
5fa0613e | 134 | inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0); |
ccd979bd | 135 | if (IS_ERR(inode)) { |
ccd979bd MF |
136 | ret = ERR_PTR(-EACCES); |
137 | goto bail_unlock; | |
138 | } | |
139 | ||
140 | oi = OCFS2_I(inode); | |
141 | /* Clear any orphaned state... If we were able to look up the | |
142 | * inode from a directory, it certainly can't be orphaned. We | |
143 | * might have the bad state from a node which intended to | |
144 | * orphan this inode but crashed before it could commit the | |
145 | * unlink. */ | |
146 | spin_lock(&oi->ip_lock); | |
147 | oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED; | |
ccd979bd MF |
148 | spin_unlock(&oi->ip_lock); |
149 | ||
150 | bail_add: | |
ccd979bd MF |
151 | dentry->d_op = &ocfs2_dentry_ops; |
152 | ret = d_splice_alias(inode, dentry); | |
153 | ||
379dfe9d MF |
154 | if (inode) { |
155 | /* | |
156 | * If d_splice_alias() finds a DCACHE_DISCONNECTED | |
157 | * dentry, it will d_move() it on top of ourse. The | |
158 | * return value will indicate this however, so in | |
159 | * those cases, we switch them around for the locking | |
160 | * code. | |
161 | * | |
162 | * NOTE: This dentry already has ->d_op set from | |
163 | * ocfs2_get_parent() and ocfs2_get_dentry() | |
164 | */ | |
165 | if (ret) | |
166 | dentry = ret; | |
167 | ||
168 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
0027dd5b | 169 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
170 | if (status) { |
171 | mlog_errno(status); | |
172 | ret = ERR_PTR(status); | |
173 | goto bail_unlock; | |
174 | } | |
175 | } | |
176 | ||
ccd979bd MF |
177 | bail_unlock: |
178 | /* Don't drop the cluster lock until *after* the d_add -- | |
179 | * unlink on another node will message us to remove that | |
180 | * dentry under this lock so otherwise we can race this with | |
34d024f8 | 181 | * the downconvert thread and have a stale dentry. */ |
e63aecb6 | 182 | ocfs2_inode_unlock(dir, 0); |
ccd979bd MF |
183 | |
184 | bail: | |
ccd979bd MF |
185 | |
186 | mlog_exit_ptr(ret); | |
187 | ||
188 | return ret; | |
189 | } | |
190 | ||
f5d36202 TY |
191 | static struct inode *ocfs2_get_init_inode(struct inode *dir, int mode) |
192 | { | |
193 | struct inode *inode; | |
194 | ||
195 | inode = new_inode(dir->i_sb); | |
196 | if (!inode) { | |
197 | mlog(ML_ERROR, "new_inode failed!\n"); | |
198 | return NULL; | |
199 | } | |
200 | ||
201 | /* populate as many fields early on as possible - many of | |
202 | * these are used by the support functions here and in | |
203 | * callers. */ | |
204 | if (S_ISDIR(mode)) | |
205 | inode->i_nlink = 2; | |
206 | else | |
207 | inode->i_nlink = 1; | |
208 | inode->i_uid = current_fsuid(); | |
209 | if (dir->i_mode & S_ISGID) { | |
210 | inode->i_gid = dir->i_gid; | |
211 | if (S_ISDIR(mode)) | |
212 | mode |= S_ISGID; | |
213 | } else | |
214 | inode->i_gid = current_fsgid(); | |
215 | inode->i_mode = mode; | |
a90714c1 | 216 | vfs_dq_init(inode); |
f5d36202 TY |
217 | return inode; |
218 | } | |
219 | ||
ccd979bd MF |
220 | static int ocfs2_mknod(struct inode *dir, |
221 | struct dentry *dentry, | |
222 | int mode, | |
223 | dev_t dev) | |
224 | { | |
225 | int status = 0; | |
226 | struct buffer_head *parent_fe_bh = NULL; | |
1fabe148 | 227 | handle_t *handle = NULL; |
ccd979bd MF |
228 | struct ocfs2_super *osb; |
229 | struct ocfs2_dinode *dirfe; | |
230 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
231 | struct inode *inode = NULL; |
232 | struct ocfs2_alloc_context *inode_ac = NULL; | |
233 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
234 | struct ocfs2_alloc_context *xattr_ac = NULL; |
235 | int want_clusters = 0; | |
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 | ||
a663e305 MF |
257 | if (S_ISDIR(mode) && (dir->i_nlink >= OCFS2_LINK_MAX)) { |
258 | status = -EMLINK; | |
259 | goto leave; | |
260 | } | |
261 | ||
ccd979bd MF |
262 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
263 | if (!dirfe->i_links_count) { | |
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, | |
311 | &si, &want_clusters, | |
312 | &xattr_credits, &xattr_ac); | |
313 | if (status < 0) { | |
314 | mlog_errno(status); | |
315 | goto leave; | |
ccd979bd MF |
316 | } |
317 | ||
534eaddd TY |
318 | /* Reserve a cluster if creating an extent based directory. */ |
319 | if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) | |
320 | want_clusters += 1; | |
321 | ||
322 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
323 | if (status < 0) { | |
324 | if (status != -ENOSPC) | |
325 | mlog_errno(status); | |
326 | goto leave; | |
327 | } | |
328 | ||
a90714c1 JK |
329 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb) + |
330 | xattr_credits); | |
ccd979bd MF |
331 | if (IS_ERR(handle)) { |
332 | status = PTR_ERR(handle); | |
333 | handle = NULL; | |
334 | mlog_errno(status); | |
335 | goto leave; | |
336 | } | |
337 | ||
a90714c1 JK |
338 | /* We don't use standard VFS wrapper because we don't want vfs_dq_init |
339 | * to be called. */ | |
340 | if (sb_any_quota_active(osb->sb) && | |
341 | osb->sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA) { | |
342 | status = -EDQUOT; | |
343 | goto leave; | |
344 | } | |
345 | did_quota_inode = 1; | |
346 | ||
ccd979bd | 347 | /* do the real work now. */ |
f5d36202 | 348 | status = ocfs2_mknod_locked(osb, dir, inode, dentry, dev, |
ccd979bd | 349 | &new_fe_bh, parent_fe_bh, handle, |
f5d36202 | 350 | inode_ac); |
ccd979bd MF |
351 | if (status < 0) { |
352 | mlog_errno(status); | |
353 | goto leave; | |
354 | } | |
355 | ||
356 | if (S_ISDIR(mode)) { | |
357 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, | |
358 | new_fe_bh, data_ac); | |
359 | if (status < 0) { | |
360 | mlog_errno(status); | |
361 | goto leave; | |
362 | } | |
363 | ||
13723d00 JB |
364 | status = ocfs2_journal_access_di(handle, dir, parent_fe_bh, |
365 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd MF |
366 | if (status < 0) { |
367 | mlog_errno(status); | |
368 | goto leave; | |
369 | } | |
370 | le16_add_cpu(&dirfe->i_links_count, 1); | |
371 | status = ocfs2_journal_dirty(handle, parent_fe_bh); | |
372 | if (status < 0) { | |
373 | mlog_errno(status); | |
374 | goto leave; | |
375 | } | |
d8c76e6f | 376 | inc_nlink(dir); |
ccd979bd MF |
377 | } |
378 | ||
89c38bd0 TY |
379 | status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh, |
380 | xattr_ac, data_ac); | |
381 | if (status < 0) { | |
382 | mlog_errno(status); | |
383 | goto leave; | |
384 | } | |
385 | ||
534eaddd TY |
386 | if (si.enable) { |
387 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
388 | xattr_ac, data_ac); | |
389 | if (status < 0) { | |
390 | mlog_errno(status); | |
391 | goto leave; | |
392 | } | |
393 | } | |
394 | ||
ccd979bd MF |
395 | status = ocfs2_add_entry(handle, dentry, inode, |
396 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
4a12ca3a | 397 | &lookup); |
ccd979bd MF |
398 | if (status < 0) { |
399 | mlog_errno(status); | |
400 | goto leave; | |
401 | } | |
402 | ||
379dfe9d | 403 | status = ocfs2_dentry_attach_lock(dentry, inode, |
0027dd5b | 404 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
405 | if (status) { |
406 | mlog_errno(status); | |
407 | goto leave; | |
408 | } | |
409 | ||
ccd979bd MF |
410 | insert_inode_hash(inode); |
411 | dentry->d_op = &ocfs2_dentry_ops; | |
412 | d_instantiate(dentry, inode); | |
413 | status = 0; | |
414 | leave: | |
a90714c1 JK |
415 | if (status < 0 && did_quota_inode) |
416 | vfs_dq_free_inode(inode); | |
ccd979bd | 417 | if (handle) |
02dc1af4 | 418 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 419 | |
e63aecb6 | 420 | ocfs2_inode_unlock(dir, 1); |
e3a82138 | 421 | |
ccd979bd MF |
422 | if (status == -ENOSPC) |
423 | mlog(0, "Disk is full\n"); | |
424 | ||
a81cb88b | 425 | brelse(new_fe_bh); |
a81cb88b | 426 | brelse(parent_fe_bh); |
534eaddd TY |
427 | kfree(si.name); |
428 | kfree(si.value); | |
ccd979bd | 429 | |
4a12ca3a MF |
430 | ocfs2_free_dir_lookup_result(&lookup); |
431 | ||
f5d36202 TY |
432 | if ((status < 0) && inode) { |
433 | clear_nlink(inode); | |
ccd979bd | 434 | iput(inode); |
f5d36202 | 435 | } |
ccd979bd MF |
436 | |
437 | if (inode_ac) | |
438 | ocfs2_free_alloc_context(inode_ac); | |
439 | ||
440 | if (data_ac) | |
441 | ocfs2_free_alloc_context(data_ac); | |
442 | ||
534eaddd TY |
443 | if (xattr_ac) |
444 | ocfs2_free_alloc_context(xattr_ac); | |
445 | ||
ccd979bd MF |
446 | mlog_exit(status); |
447 | ||
448 | return status; | |
449 | } | |
450 | ||
451 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, | |
452 | struct inode *dir, | |
f5d36202 TY |
453 | struct inode *inode, |
454 | struct dentry *dentry, | |
ccd979bd MF |
455 | dev_t dev, |
456 | struct buffer_head **new_fe_bh, | |
457 | struct buffer_head *parent_fe_bh, | |
1fabe148 | 458 | handle_t *handle, |
ccd979bd MF |
459 | struct ocfs2_alloc_context *inode_ac) |
460 | { | |
461 | int status = 0; | |
462 | struct ocfs2_dinode *fe = NULL; | |
463 | struct ocfs2_extent_list *fel; | |
464 | u64 fe_blkno = 0; | |
465 | u16 suballoc_bit; | |
ccd979bd | 466 | |
f5d36202 TY |
467 | mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, |
468 | inode->i_mode, (unsigned long)dev, dentry->d_name.len, | |
ccd979bd MF |
469 | dentry->d_name.name); |
470 | ||
471 | *new_fe_bh = NULL; | |
ccd979bd MF |
472 | |
473 | status = ocfs2_claim_new_inode(osb, handle, inode_ac, &suballoc_bit, | |
474 | &fe_blkno); | |
475 | if (status < 0) { | |
476 | mlog_errno(status); | |
477 | goto leave; | |
478 | } | |
479 | ||
ccd979bd MF |
480 | /* populate as many fields early on as possible - many of |
481 | * these are used by the support functions here and in | |
482 | * callers. */ | |
483 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
484 | OCFS2_I(inode)->ip_blkno = fe_blkno; | |
ccd979bd MF |
485 | spin_lock(&osb->osb_lock); |
486 | inode->i_generation = osb->s_next_generation++; | |
487 | spin_unlock(&osb->osb_lock); | |
488 | ||
489 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
490 | if (!*new_fe_bh) { | |
491 | status = -EIO; | |
492 | mlog_errno(status); | |
493 | goto leave; | |
494 | } | |
495 | ocfs2_set_new_buffer_uptodate(inode, *new_fe_bh); | |
496 | ||
13723d00 JB |
497 | status = ocfs2_journal_access_di(handle, inode, *new_fe_bh, |
498 | OCFS2_JOURNAL_ACCESS_CREATE); | |
ccd979bd MF |
499 | if (status < 0) { |
500 | mlog_errno(status); | |
501 | goto leave; | |
502 | } | |
503 | ||
504 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
505 | memset(fe, 0, osb->sb->s_blocksize); | |
506 | ||
507 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
508 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
509 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
510 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); | |
4d0ddb2c | 511 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
f5d36202 TY |
512 | fe->i_uid = cpu_to_le32(inode->i_uid); |
513 | fe->i_gid = cpu_to_le32(inode->i_gid); | |
514 | fe->i_mode = cpu_to_le16(inode->i_mode); | |
515 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 516 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
ccd979bd MF |
517 | fe->i_links_count = cpu_to_le16(inode->i_nlink); |
518 | ||
519 | fe->i_last_eb_blk = 0; | |
520 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
521 | le32_add_cpu(&fe->i_flags, OCFS2_VALID_FL); | |
522 | fe->i_atime = fe->i_ctime = fe->i_mtime = | |
523 | cpu_to_le64(CURRENT_TIME.tv_sec); | |
524 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = | |
525 | cpu_to_le32(CURRENT_TIME.tv_nsec); | |
526 | fe->i_dtime = 0; | |
527 | ||
5b6a3a2b MF |
528 | /* |
529 | * If supported, directories start with inline data. | |
530 | */ | |
f5d36202 | 531 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
532 | u16 feat = le16_to_cpu(fe->i_dyn_features); |
533 | ||
534 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); | |
535 | ||
d9ae49d6 TY |
536 | fe->id2.i_data.id_count = cpu_to_le16( |
537 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); | |
5b6a3a2b MF |
538 | } else { |
539 | fel = &fe->id2.i_list; | |
540 | fel->l_tree_depth = 0; | |
541 | fel->l_next_free_rec = 0; | |
542 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
543 | } | |
ccd979bd MF |
544 | |
545 | status = ocfs2_journal_dirty(handle, *new_fe_bh); | |
546 | if (status < 0) { | |
547 | mlog_errno(status); | |
548 | goto leave; | |
549 | } | |
550 | ||
b657c95c | 551 | ocfs2_populate_inode(inode, fe, 1); |
ccd979bd | 552 | ocfs2_inode_set_new(osb, inode); |
c271c5c2 SM |
553 | if (!ocfs2_mount_local(osb)) { |
554 | status = ocfs2_create_new_inode_locks(inode); | |
555 | if (status < 0) | |
556 | mlog_errno(status); | |
557 | } | |
ccd979bd MF |
558 | |
559 | status = 0; /* error in ocfs2_create_new_inode_locks is not | |
560 | * critical */ | |
561 | ||
ccd979bd MF |
562 | leave: |
563 | if (status < 0) { | |
564 | if (*new_fe_bh) { | |
565 | brelse(*new_fe_bh); | |
566 | *new_fe_bh = NULL; | |
567 | } | |
ccd979bd MF |
568 | } |
569 | ||
570 | mlog_exit(status); | |
571 | return status; | |
572 | } | |
573 | ||
574 | static int ocfs2_mkdir(struct inode *dir, | |
575 | struct dentry *dentry, | |
576 | int mode) | |
577 | { | |
578 | int ret; | |
579 | ||
580 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, | |
581 | dentry->d_name.len, dentry->d_name.name); | |
582 | ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0); | |
583 | mlog_exit(ret); | |
584 | ||
585 | return ret; | |
586 | } | |
587 | ||
588 | static int ocfs2_create(struct inode *dir, | |
589 | struct dentry *dentry, | |
590 | int mode, | |
591 | struct nameidata *nd) | |
592 | { | |
593 | int ret; | |
594 | ||
595 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, | |
596 | dentry->d_name.len, dentry->d_name.name); | |
597 | ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0); | |
598 | mlog_exit(ret); | |
599 | ||
600 | return ret; | |
601 | } | |
602 | ||
603 | static int ocfs2_link(struct dentry *old_dentry, | |
604 | struct inode *dir, | |
605 | struct dentry *dentry) | |
606 | { | |
1fabe148 | 607 | handle_t *handle; |
ccd979bd MF |
608 | struct inode *inode = old_dentry->d_inode; |
609 | int err; | |
610 | struct buffer_head *fe_bh = NULL; | |
611 | struct buffer_head *parent_fe_bh = NULL; | |
ccd979bd MF |
612 | struct ocfs2_dinode *fe = NULL; |
613 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
4a12ca3a | 614 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
615 | |
616 | mlog_entry("(inode=%lu, old='%.*s' new='%.*s')\n", inode->i_ino, | |
617 | old_dentry->d_name.len, old_dentry->d_name.name, | |
618 | dentry->d_name.len, dentry->d_name.name); | |
619 | ||
123a9643 MF |
620 | if (S_ISDIR(inode->i_mode)) |
621 | return -EPERM; | |
ccd979bd | 622 | |
e63aecb6 | 623 | err = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
624 | if (err < 0) { |
625 | if (err != -ENOENT) | |
626 | mlog_errno(err); | |
123a9643 | 627 | return err; |
ccd979bd MF |
628 | } |
629 | ||
0f62de2c TY |
630 | if (!dir->i_nlink) { |
631 | err = -ENOENT; | |
123a9643 | 632 | goto out; |
0f62de2c TY |
633 | } |
634 | ||
ccd979bd MF |
635 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
636 | dentry->d_name.len); | |
637 | if (err) | |
123a9643 | 638 | goto out; |
ccd979bd MF |
639 | |
640 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
641 | dentry->d_name.name, | |
4a12ca3a | 642 | dentry->d_name.len, &lookup); |
ccd979bd MF |
643 | if (err < 0) { |
644 | mlog_errno(err); | |
123a9643 | 645 | goto out; |
ccd979bd MF |
646 | } |
647 | ||
e63aecb6 | 648 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
649 | if (err < 0) { |
650 | if (err != -ENOENT) | |
651 | mlog_errno(err); | |
123a9643 | 652 | goto out; |
ccd979bd MF |
653 | } |
654 | ||
655 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
656 | if (le16_to_cpu(fe->i_links_count) >= OCFS2_LINK_MAX) { | |
657 | err = -EMLINK; | |
123a9643 | 658 | goto out_unlock_inode; |
ccd979bd MF |
659 | } |
660 | ||
a90714c1 | 661 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
662 | if (IS_ERR(handle)) { |
663 | err = PTR_ERR(handle); | |
664 | handle = NULL; | |
665 | mlog_errno(err); | |
123a9643 | 666 | goto out_unlock_inode; |
ccd979bd MF |
667 | } |
668 | ||
13723d00 JB |
669 | err = ocfs2_journal_access_di(handle, inode, fe_bh, |
670 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd MF |
671 | if (err < 0) { |
672 | mlog_errno(err); | |
123a9643 | 673 | goto out_commit; |
ccd979bd MF |
674 | } |
675 | ||
d8c76e6f | 676 | inc_nlink(inode); |
ccd979bd MF |
677 | inode->i_ctime = CURRENT_TIME; |
678 | fe->i_links_count = cpu_to_le16(inode->i_nlink); | |
679 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); | |
680 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
681 | ||
682 | err = ocfs2_journal_dirty(handle, fe_bh); | |
683 | if (err < 0) { | |
684 | le16_add_cpu(&fe->i_links_count, -1); | |
9a53c3a7 | 685 | drop_nlink(inode); |
ccd979bd | 686 | mlog_errno(err); |
123a9643 | 687 | goto out_commit; |
ccd979bd MF |
688 | } |
689 | ||
690 | err = ocfs2_add_entry(handle, dentry, inode, | |
691 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 692 | parent_fe_bh, &lookup); |
ccd979bd MF |
693 | if (err) { |
694 | le16_add_cpu(&fe->i_links_count, -1); | |
9a53c3a7 | 695 | drop_nlink(inode); |
ccd979bd | 696 | mlog_errno(err); |
123a9643 | 697 | goto out_commit; |
ccd979bd MF |
698 | } |
699 | ||
0027dd5b | 700 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
701 | if (err) { |
702 | mlog_errno(err); | |
123a9643 | 703 | goto out_commit; |
379dfe9d MF |
704 | } |
705 | ||
ccd979bd MF |
706 | atomic_inc(&inode->i_count); |
707 | dentry->d_op = &ocfs2_dentry_ops; | |
708 | d_instantiate(dentry, inode); | |
123a9643 MF |
709 | |
710 | out_commit: | |
02dc1af4 | 711 | ocfs2_commit_trans(osb, handle); |
123a9643 | 712 | out_unlock_inode: |
e63aecb6 | 713 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
714 | |
715 | out: | |
e63aecb6 | 716 | ocfs2_inode_unlock(dir, 1); |
123a9643 | 717 | |
a81cb88b MF |
718 | brelse(fe_bh); |
719 | brelse(parent_fe_bh); | |
ccd979bd | 720 | |
4a12ca3a MF |
721 | ocfs2_free_dir_lookup_result(&lookup); |
722 | ||
ccd979bd MF |
723 | mlog_exit(err); |
724 | ||
725 | return err; | |
726 | } | |
727 | ||
379dfe9d MF |
728 | /* |
729 | * Takes and drops an exclusive lock on the given dentry. This will | |
730 | * force other nodes to drop it. | |
731 | */ | |
732 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
733 | { | |
734 | int ret; | |
735 | ||
736 | ret = ocfs2_dentry_lock(dentry, 1); | |
737 | if (ret) | |
738 | mlog_errno(ret); | |
739 | else | |
740 | ocfs2_dentry_unlock(dentry, 1); | |
741 | ||
742 | return ret; | |
743 | } | |
744 | ||
17ff7856 MF |
745 | static inline int inode_is_unlinkable(struct inode *inode) |
746 | { | |
747 | if (S_ISDIR(inode->i_mode)) { | |
748 | if (inode->i_nlink == 2) | |
749 | return 1; | |
750 | return 0; | |
751 | } | |
752 | ||
753 | if (inode->i_nlink == 1) | |
754 | return 1; | |
755 | return 0; | |
756 | } | |
757 | ||
ccd979bd MF |
758 | static int ocfs2_unlink(struct inode *dir, |
759 | struct dentry *dentry) | |
760 | { | |
761 | int status; | |
30a4f5e8 | 762 | int child_locked = 0; |
ccd979bd | 763 | struct inode *inode = dentry->d_inode; |
5098c27b | 764 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
765 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
766 | u64 blkno; | |
767 | struct ocfs2_dinode *fe = NULL; | |
768 | struct buffer_head *fe_bh = NULL; | |
769 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 770 | handle_t *handle = NULL; |
ccd979bd | 771 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
772 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
773 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd MF |
774 | |
775 | mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry, | |
776 | dentry->d_name.len, dentry->d_name.name); | |
777 | ||
778 | BUG_ON(dentry->d_parent->d_inode != dir); | |
779 | ||
b0697053 | 780 | mlog(0, "ino = %llu\n", (unsigned long long)OCFS2_I(inode)->ip_blkno); |
ccd979bd MF |
781 | |
782 | if (inode == osb->root_inode) { | |
783 | mlog(0, "Cannot delete the root directory\n"); | |
30a4f5e8 | 784 | return -EPERM; |
ccd979bd MF |
785 | } |
786 | ||
e63aecb6 | 787 | status = ocfs2_inode_lock(dir, &parent_node_bh, 1); |
ccd979bd MF |
788 | if (status < 0) { |
789 | if (status != -ENOENT) | |
790 | mlog_errno(status); | |
30a4f5e8 | 791 | return status; |
ccd979bd MF |
792 | } |
793 | ||
794 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
795 | dentry->d_name.len, &blkno, dir, |
796 | &lookup); | |
ccd979bd MF |
797 | if (status < 0) { |
798 | if (status != -ENOENT) | |
799 | mlog_errno(status); | |
800 | goto leave; | |
801 | } | |
802 | ||
803 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
804 | status = -ENOENT; | |
805 | ||
b0697053 MF |
806 | mlog(0, "ip_blkno %llu != dirent blkno %llu ip_flags = %x\n", |
807 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
808 | (unsigned long long)blkno, OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
809 | goto leave; |
810 | } | |
811 | ||
e63aecb6 | 812 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
813 | if (status < 0) { |
814 | if (status != -ENOENT) | |
815 | mlog_errno(status); | |
816 | goto leave; | |
817 | } | |
30a4f5e8 | 818 | child_locked = 1; |
ccd979bd MF |
819 | |
820 | if (S_ISDIR(inode->i_mode)) { | |
821 | if (!ocfs2_empty_dir(inode)) { | |
822 | status = -ENOTEMPTY; | |
823 | goto leave; | |
824 | } else if (inode->i_nlink != 2) { | |
825 | status = -ENOTEMPTY; | |
826 | goto leave; | |
827 | } | |
828 | } | |
829 | ||
379dfe9d | 830 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 831 | if (status < 0) { |
34d024f8 | 832 | /* This remote delete should succeed under all normal |
ccd979bd MF |
833 | * circumstances. */ |
834 | mlog_errno(status); | |
835 | goto leave; | |
836 | } | |
837 | ||
17ff7856 | 838 | if (inode_is_unlinkable(inode)) { |
5098c27b | 839 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, inode, |
4a12ca3a | 840 | orphan_name, &orphan_insert); |
ccd979bd MF |
841 | if (status < 0) { |
842 | mlog_errno(status); | |
843 | goto leave; | |
844 | } | |
845 | } | |
846 | ||
a90714c1 | 847 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
848 | if (IS_ERR(handle)) { |
849 | status = PTR_ERR(handle); | |
850 | handle = NULL; | |
851 | mlog_errno(status); | |
852 | goto leave; | |
853 | } | |
854 | ||
13723d00 JB |
855 | status = ocfs2_journal_access_di(handle, inode, fe_bh, |
856 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd MF |
857 | if (status < 0) { |
858 | mlog_errno(status); | |
859 | goto leave; | |
860 | } | |
861 | ||
862 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
863 | ||
17ff7856 | 864 | if (inode_is_unlinkable(inode)) { |
ccd979bd | 865 | status = ocfs2_orphan_add(osb, handle, inode, fe, orphan_name, |
4a12ca3a | 866 | &orphan_insert, orphan_dir); |
ccd979bd MF |
867 | if (status < 0) { |
868 | mlog_errno(status); | |
869 | goto leave; | |
870 | } | |
871 | } | |
872 | ||
873 | /* delete the name from the parent dir */ | |
4a12ca3a | 874 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
875 | if (status < 0) { |
876 | mlog_errno(status); | |
877 | goto leave; | |
878 | } | |
879 | ||
17ff7856 MF |
880 | if (S_ISDIR(inode->i_mode)) |
881 | drop_nlink(inode); | |
882 | drop_nlink(inode); | |
ccd979bd | 883 | fe->i_links_count = cpu_to_le16(inode->i_nlink); |
ccd979bd MF |
884 | |
885 | status = ocfs2_journal_dirty(handle, fe_bh); | |
886 | if (status < 0) { | |
887 | mlog_errno(status); | |
888 | goto leave; | |
889 | } | |
890 | ||
592282cf MF |
891 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; |
892 | if (S_ISDIR(inode->i_mode)) | |
17ff7856 | 893 | drop_nlink(dir); |
592282cf MF |
894 | |
895 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
896 | if (status < 0) { | |
897 | mlog_errno(status); | |
898 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 899 | inc_nlink(dir); |
ccd979bd MF |
900 | } |
901 | ||
902 | leave: | |
ccd979bd | 903 | if (handle) |
02dc1af4 | 904 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 905 | |
30a4f5e8 | 906 | if (child_locked) |
e63aecb6 | 907 | ocfs2_inode_unlock(inode, 1); |
30a4f5e8 | 908 | |
e63aecb6 | 909 | ocfs2_inode_unlock(dir, 1); |
30a4f5e8 | 910 | |
5098c27b MF |
911 | if (orphan_dir) { |
912 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 913 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
914 | mutex_unlock(&orphan_dir->i_mutex); |
915 | iput(orphan_dir); | |
916 | } | |
917 | ||
a81cb88b | 918 | brelse(fe_bh); |
a81cb88b | 919 | brelse(parent_node_bh); |
4a12ca3a MF |
920 | |
921 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
922 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd MF |
923 | |
924 | mlog_exit(status); | |
925 | ||
926 | return status; | |
927 | } | |
928 | ||
929 | /* | |
930 | * The only place this should be used is rename! | |
931 | * if they have the same id, then the 1st one is the only one locked. | |
932 | */ | |
933 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
934 | struct buffer_head **bh1, |
935 | struct inode *inode1, | |
936 | struct buffer_head **bh2, | |
937 | struct inode *inode2) | |
938 | { | |
939 | int status; | |
940 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); | |
941 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
942 | struct buffer_head **tmpbh; | |
943 | struct inode *tmpinode; | |
944 | ||
b0697053 MF |
945 | mlog_entry("(inode1 = %llu, inode2 = %llu)\n", |
946 | (unsigned long long)oi1->ip_blkno, | |
947 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 948 | |
ccd979bd MF |
949 | if (*bh1) |
950 | *bh1 = NULL; | |
951 | if (*bh2) | |
952 | *bh2 = NULL; | |
953 | ||
954 | /* we always want to lock the one with the lower lockid first. */ | |
955 | if (oi1->ip_blkno != oi2->ip_blkno) { | |
956 | if (oi1->ip_blkno < oi2->ip_blkno) { | |
957 | /* switch id1 and id2 around */ | |
958 | mlog(0, "switching them around...\n"); | |
959 | tmpbh = bh2; | |
960 | bh2 = bh1; | |
961 | bh1 = tmpbh; | |
962 | ||
963 | tmpinode = inode2; | |
964 | inode2 = inode1; | |
965 | inode1 = tmpinode; | |
966 | } | |
967 | /* lock id2 */ | |
e63aecb6 | 968 | status = ocfs2_inode_lock(inode2, bh2, 1); |
ccd979bd MF |
969 | if (status < 0) { |
970 | if (status != -ENOENT) | |
971 | mlog_errno(status); | |
972 | goto bail; | |
973 | } | |
974 | } | |
8d5596c6 | 975 | |
ccd979bd | 976 | /* lock id1 */ |
e63aecb6 | 977 | status = ocfs2_inode_lock(inode1, bh1, 1); |
ccd979bd | 978 | if (status < 0) { |
8d5596c6 MF |
979 | /* |
980 | * An error return must mean that no cluster locks | |
981 | * were held on function exit. | |
982 | */ | |
983 | if (oi1->ip_blkno != oi2->ip_blkno) | |
e63aecb6 | 984 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 | 985 | |
ccd979bd MF |
986 | if (status != -ENOENT) |
987 | mlog_errno(status); | |
ccd979bd | 988 | } |
8d5596c6 | 989 | |
ccd979bd MF |
990 | bail: |
991 | mlog_exit(status); | |
992 | return status; | |
993 | } | |
994 | ||
8d5596c6 MF |
995 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
996 | { | |
e63aecb6 | 997 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
998 | |
999 | if (inode1 != inode2) | |
e63aecb6 | 1000 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1001 | } |
1002 | ||
ccd979bd MF |
1003 | static int ocfs2_rename(struct inode *old_dir, |
1004 | struct dentry *old_dentry, | |
1005 | struct inode *new_dir, | |
1006 | struct dentry *new_dentry) | |
1007 | { | |
4a12ca3a MF |
1008 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1009 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
ccd979bd MF |
1010 | struct inode *old_inode = old_dentry->d_inode; |
1011 | struct inode *new_inode = new_dentry->d_inode; | |
5098c27b | 1012 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1013 | struct ocfs2_dinode *newfe = NULL; |
1014 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
1015 | struct buffer_head *orphan_entry_bh = NULL; | |
1016 | struct buffer_head *newfe_bh = NULL; | |
592282cf | 1017 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd MF |
1018 | struct buffer_head *insert_entry_bh = NULL; |
1019 | struct ocfs2_super *osb = NULL; | |
5b6a3a2b | 1020 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1021 | handle_t *handle = NULL; |
ccd979bd MF |
1022 | struct buffer_head *old_dir_bh = NULL; |
1023 | struct buffer_head *new_dir_bh = NULL; | |
592282cf | 1024 | nlink_t old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1025 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1026 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1027 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1028 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1029 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1030 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
ccd979bd MF |
1031 | |
1032 | /* At some point it might be nice to break this function up a | |
1033 | * bit. */ | |
1034 | ||
1035 | mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p, from='%.*s' to='%.*s')\n", | |
1036 | old_dir, old_dentry, new_dir, new_dentry, | |
1037 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1038 | new_dentry->d_name.len, new_dentry->d_name.name); | |
1039 | ||
1040 | osb = OCFS2_SB(old_dir->i_sb); | |
1041 | ||
1042 | if (new_inode) { | |
1043 | if (!igrab(new_inode)) | |
1044 | BUG(); | |
1045 | } | |
1046 | ||
1b3c3714 | 1047 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1048 | * a/b/c |
1049 | * a/d | |
1050 | * a,b,c, and d are all directories. | |
1051 | * | |
1052 | * from cwd of 'a' on both nodes: | |
1053 | * node1: mv b/c d | |
1054 | * node2: mv d b/c | |
1055 | * | |
1056 | * And that's why, just like the VFS, we need a file system | |
1057 | * rename lock. */ | |
5dabd695 | 1058 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1059 | status = ocfs2_rename_lock(osb); |
1060 | if (status < 0) { | |
1061 | mlog_errno(status); | |
1062 | goto bail; | |
1063 | } | |
1064 | rename_lock = 1; | |
1065 | } | |
1066 | ||
ccd979bd | 1067 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 MF |
1068 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
1069 | &new_dir_bh, new_dir); | |
ccd979bd MF |
1070 | if (status < 0) { |
1071 | mlog_errno(status); | |
1072 | goto bail; | |
1073 | } | |
8d5596c6 | 1074 | parents_locked = 1; |
ccd979bd MF |
1075 | |
1076 | /* make sure both dirs have bhs | |
1077 | * get an extra ref on old_dir_bh if old==new */ | |
1078 | if (!new_dir_bh) { | |
1079 | if (old_dir_bh) { | |
1080 | new_dir_bh = old_dir_bh; | |
1081 | get_bh(new_dir_bh); | |
1082 | } else { | |
1083 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1084 | status = -EIO; | |
1085 | goto bail; | |
1086 | } | |
1087 | } | |
1088 | ||
379dfe9d | 1089 | /* |
592282cf | 1090 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1091 | * also ensures that the downconvert thread on other nodes |
1092 | * won't have to concurrently downconvert the inode and the | |
1093 | * dentry locks. | |
379dfe9d | 1094 | */ |
e63aecb6 | 1095 | status = ocfs2_inode_lock(old_inode, &old_inode_bh, 1); |
379dfe9d MF |
1096 | if (status < 0) { |
1097 | if (status != -ENOENT) | |
ccd979bd | 1098 | mlog_errno(status); |
379dfe9d MF |
1099 | goto bail; |
1100 | } | |
8d5596c6 | 1101 | old_child_locked = 1; |
ccd979bd | 1102 | |
379dfe9d MF |
1103 | status = ocfs2_remote_dentry_delete(old_dentry); |
1104 | if (status < 0) { | |
1105 | mlog_errno(status); | |
1106 | goto bail; | |
1107 | } | |
1108 | ||
1109 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1110 | u64 old_inode_parent; |
1111 | ||
4a12ca3a | 1112 | update_dot_dot = 1; |
38760e24 | 1113 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1114 | old_inode, |
1115 | &old_inode_dot_dot_res); | |
38760e24 MF |
1116 | if (status) { |
1117 | status = -EIO; | |
ccd979bd | 1118 | goto bail; |
38760e24 | 1119 | } |
ccd979bd | 1120 | |
38760e24 MF |
1121 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1122 | status = -EIO; | |
ccd979bd | 1123 | goto bail; |
38760e24 MF |
1124 | } |
1125 | ||
1126 | if (!new_inode && new_dir != old_dir && | |
1127 | new_dir->i_nlink >= OCFS2_LINK_MAX) { | |
1128 | status = -EMLINK; | |
ccd979bd | 1129 | goto bail; |
38760e24 | 1130 | } |
ccd979bd MF |
1131 | } |
1132 | ||
5b6a3a2b MF |
1133 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1134 | old_dentry->d_name.len, | |
1135 | &old_de_ino); | |
1136 | if (status) { | |
1137 | status = -ENOENT; | |
ccd979bd | 1138 | goto bail; |
5b6a3a2b | 1139 | } |
ccd979bd MF |
1140 | |
1141 | /* | |
1142 | * Check for inode number is _not_ due to possible IO errors. | |
1143 | * We might rmdir the source, keep it as pwd of some process | |
1144 | * and merrily kill the link to whatever was created under the | |
1145 | * same name. Goodbye sticky bit ;-< | |
1146 | */ | |
5b6a3a2b MF |
1147 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1148 | status = -ENOENT; | |
ccd979bd | 1149 | goto bail; |
5b6a3a2b | 1150 | } |
ccd979bd MF |
1151 | |
1152 | /* check if the target already exists (in which case we need | |
1153 | * to delete it */ | |
1154 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1155 | new_dentry->d_name.len, | |
4a12ca3a MF |
1156 | &newfe_blkno, new_dir, |
1157 | &target_lookup_res); | |
ccd979bd MF |
1158 | /* The only error we allow here is -ENOENT because the new |
1159 | * file not existing is perfectly valid. */ | |
1160 | if ((status < 0) && (status != -ENOENT)) { | |
1161 | /* If we cannot find the file specified we should just */ | |
1162 | /* return the error... */ | |
1163 | mlog_errno(status); | |
1164 | goto bail; | |
1165 | } | |
4a12ca3a MF |
1166 | if (status == 0) |
1167 | target_exists = 1; | |
ccd979bd | 1168 | |
4a12ca3a | 1169 | if (!target_exists && new_inode) { |
e325a88f SE |
1170 | /* |
1171 | * Target was unlinked by another node while we were | |
1172 | * waiting to get to ocfs2_rename(). There isn't | |
1173 | * anything we can do here to help the situation, so | |
1174 | * bubble up the appropriate error. | |
1175 | */ | |
1176 | status = -ENOENT; | |
1177 | goto bail; | |
1178 | } | |
ccd979bd MF |
1179 | |
1180 | /* In case we need to overwrite an existing file, we blow it | |
1181 | * away first */ | |
4a12ca3a | 1182 | if (target_exists) { |
ccd979bd MF |
1183 | /* VFS didn't think there existed an inode here, but |
1184 | * someone else in the cluster must have raced our | |
1185 | * rename to create one. Today we error cleanly, in | |
1186 | * the future we should consider calling iget to build | |
1187 | * a new struct inode for this entry. */ | |
1188 | if (!new_inode) { | |
1189 | status = -EACCES; | |
1190 | ||
1191 | mlog(0, "We found an inode for name %.*s but VFS " | |
1192 | "didn't give us one.\n", new_dentry->d_name.len, | |
1193 | new_dentry->d_name.name); | |
1194 | goto bail; | |
1195 | } | |
1196 | ||
1197 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1198 | status = -EACCES; | |
1199 | ||
b0697053 MF |
1200 | mlog(0, "Inode %llu and dir %llu disagree. flags = %x\n", |
1201 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, | |
1202 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1203 | OCFS2_I(new_inode)->ip_flags); |
1204 | goto bail; | |
1205 | } | |
1206 | ||
e63aecb6 | 1207 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1208 | if (status < 0) { |
1209 | if (status != -ENOENT) | |
1210 | mlog_errno(status); | |
1211 | goto bail; | |
1212 | } | |
8d5596c6 | 1213 | new_child_locked = 1; |
ccd979bd | 1214 | |
379dfe9d | 1215 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1216 | if (status < 0) { |
1217 | mlog_errno(status); | |
1218 | goto bail; | |
1219 | } | |
1220 | ||
1221 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1222 | ||
4a12ca3a MF |
1223 | mlog(0, "aha rename over existing... new_blkno=%llu " |
1224 | "newfebh=%p bhblocknr=%llu\n", | |
b0697053 | 1225 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1226 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1227 | ||
1228 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1229 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
ccd979bd MF |
1230 | new_inode, |
1231 | orphan_name, | |
4a12ca3a | 1232 | &orphan_insert); |
ccd979bd MF |
1233 | if (status < 0) { |
1234 | mlog_errno(status); | |
1235 | goto bail; | |
1236 | } | |
1237 | } | |
1238 | } else { | |
1239 | BUG_ON(new_dentry->d_parent->d_inode != new_dir); | |
1240 | ||
1241 | status = ocfs2_check_dir_for_entry(new_dir, | |
1242 | new_dentry->d_name.name, | |
1243 | new_dentry->d_name.len); | |
1244 | if (status) | |
1245 | goto bail; | |
1246 | ||
1247 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1248 | new_dentry->d_name.name, | |
1249 | new_dentry->d_name.len, | |
4a12ca3a | 1250 | &target_insert); |
ccd979bd MF |
1251 | if (status < 0) { |
1252 | mlog_errno(status); | |
1253 | goto bail; | |
1254 | } | |
1255 | } | |
1256 | ||
a90714c1 | 1257 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1258 | if (IS_ERR(handle)) { |
1259 | status = PTR_ERR(handle); | |
1260 | handle = NULL; | |
1261 | mlog_errno(status); | |
1262 | goto bail; | |
1263 | } | |
1264 | ||
4a12ca3a | 1265 | if (target_exists) { |
ccd979bd MF |
1266 | if (S_ISDIR(new_inode->i_mode)) { |
1267 | if (!ocfs2_empty_dir(new_inode) || | |
1268 | new_inode->i_nlink != 2) { | |
1269 | status = -ENOTEMPTY; | |
1270 | goto bail; | |
1271 | } | |
1272 | } | |
13723d00 JB |
1273 | status = ocfs2_journal_access_di(handle, new_inode, newfe_bh, |
1274 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd MF |
1275 | if (status < 0) { |
1276 | mlog_errno(status); | |
1277 | goto bail; | |
1278 | } | |
1279 | ||
1280 | if (S_ISDIR(new_inode->i_mode) || | |
1281 | (newfe->i_links_count == cpu_to_le16(1))){ | |
1282 | status = ocfs2_orphan_add(osb, handle, new_inode, | |
1283 | newfe, orphan_name, | |
4a12ca3a | 1284 | &orphan_insert, orphan_dir); |
ccd979bd MF |
1285 | if (status < 0) { |
1286 | mlog_errno(status); | |
1287 | goto bail; | |
1288 | } | |
1289 | } | |
1290 | ||
1291 | /* change the dirent to point to the correct inode */ | |
4a12ca3a MF |
1292 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1293 | old_inode); | |
ccd979bd MF |
1294 | if (status < 0) { |
1295 | mlog_errno(status); | |
1296 | goto bail; | |
1297 | } | |
ccd979bd | 1298 | new_dir->i_version++; |
ccd979bd MF |
1299 | |
1300 | if (S_ISDIR(new_inode->i_mode)) | |
1301 | newfe->i_links_count = 0; | |
1302 | else | |
1303 | le16_add_cpu(&newfe->i_links_count, -1); | |
1304 | ||
1305 | status = ocfs2_journal_dirty(handle, newfe_bh); | |
1306 | if (status < 0) { | |
1307 | mlog_errno(status); | |
1308 | goto bail; | |
1309 | } | |
1310 | } else { | |
1311 | /* if the name was not found in new_dir, add it now */ | |
1312 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1313 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1314 | new_dir_bh, &target_insert); |
ccd979bd MF |
1315 | } |
1316 | ||
1317 | old_inode->i_ctime = CURRENT_TIME; | |
1318 | mark_inode_dirty(old_inode); | |
480214d7 | 1319 | |
13723d00 JB |
1320 | status = ocfs2_journal_access_di(handle, old_inode, old_inode_bh, |
1321 | OCFS2_JOURNAL_ACCESS_WRITE); | |
480214d7 SM |
1322 | if (status >= 0) { |
1323 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1324 | ||
1325 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); | |
1326 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); | |
1327 | ||
1328 | status = ocfs2_journal_dirty(handle, old_inode_bh); | |
1329 | if (status < 0) | |
1330 | mlog_errno(status); | |
1331 | } else | |
1332 | mlog_errno(status); | |
ccd979bd | 1333 | |
5b6a3a2b MF |
1334 | /* |
1335 | * Now that the name has been added to new_dir, remove the old name. | |
1336 | * | |
1337 | * We don't keep any directory entry context around until now | |
1338 | * because the insert might have changed the type of directory | |
1339 | * we're dealing with. | |
1340 | */ | |
4a12ca3a MF |
1341 | status = ocfs2_find_entry(old_dentry->d_name.name, |
1342 | old_dentry->d_name.len, old_dir, | |
1343 | &old_entry_lookup); | |
1344 | if (status) | |
5b6a3a2b | 1345 | goto bail; |
5b6a3a2b | 1346 | |
4a12ca3a | 1347 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
ccd979bd MF |
1348 | if (status < 0) { |
1349 | mlog_errno(status); | |
1350 | goto bail; | |
1351 | } | |
1352 | ||
1353 | if (new_inode) { | |
1354 | new_inode->i_nlink--; | |
1355 | new_inode->i_ctime = CURRENT_TIME; | |
1356 | } | |
1357 | old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME; | |
4a12ca3a MF |
1358 | |
1359 | if (update_dot_dot) { | |
1360 | status = ocfs2_update_entry(old_inode, handle, | |
1361 | &old_inode_dot_dot_res, new_dir); | |
ccd979bd MF |
1362 | old_dir->i_nlink--; |
1363 | if (new_inode) { | |
1364 | new_inode->i_nlink--; | |
1365 | } else { | |
d8c76e6f | 1366 | inc_nlink(new_dir); |
ccd979bd MF |
1367 | mark_inode_dirty(new_dir); |
1368 | } | |
1369 | } | |
1370 | mark_inode_dirty(old_dir); | |
592282cf MF |
1371 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1372 | if (new_inode) { | |
ccd979bd | 1373 | mark_inode_dirty(new_inode); |
592282cf MF |
1374 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1375 | } | |
ccd979bd | 1376 | |
592282cf MF |
1377 | if (old_dir != new_dir) { |
1378 | /* Keep the same times on both directories.*/ | |
1379 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; | |
1380 | ||
1381 | /* | |
1382 | * This will also pick up the i_nlink change from the | |
1383 | * block above. | |
1384 | */ | |
1385 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1386 | } | |
ccd979bd MF |
1387 | |
1388 | if (old_dir_nlink != old_dir->i_nlink) { | |
1389 | if (!old_dir_bh) { | |
1390 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1391 | "%llu from %d to %d but bh is NULL!\n", |
1392 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1393 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1394 | } else { |
1395 | struct ocfs2_dinode *fe; | |
13723d00 JB |
1396 | status = ocfs2_journal_access_di(handle, old_dir, |
1397 | old_dir_bh, | |
1398 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd MF |
1399 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
1400 | fe->i_links_count = cpu_to_le16(old_dir->i_nlink); | |
1401 | status = ocfs2_journal_dirty(handle, old_dir_bh); | |
1402 | } | |
1403 | } | |
1404 | ||
379dfe9d | 1405 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1406 | status = 0; |
1407 | bail: | |
1408 | if (rename_lock) | |
1409 | ocfs2_rename_unlock(osb); | |
1410 | ||
1411 | if (handle) | |
02dc1af4 | 1412 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1413 | |
8d5596c6 MF |
1414 | if (parents_locked) |
1415 | ocfs2_double_unlock(old_dir, new_dir); | |
1416 | ||
1417 | if (old_child_locked) | |
e63aecb6 | 1418 | ocfs2_inode_unlock(old_inode, 1); |
8d5596c6 MF |
1419 | |
1420 | if (new_child_locked) | |
e63aecb6 | 1421 | ocfs2_inode_unlock(new_inode, 1); |
8d5596c6 | 1422 | |
5098c27b MF |
1423 | if (orphan_dir) { |
1424 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1425 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
1426 | mutex_unlock(&orphan_dir->i_mutex); |
1427 | iput(orphan_dir); | |
1428 | } | |
1429 | ||
ccd979bd MF |
1430 | if (new_inode) |
1431 | sync_mapping_buffers(old_inode->i_mapping); | |
1432 | ||
1433 | if (new_inode) | |
1434 | iput(new_inode); | |
4a12ca3a MF |
1435 | |
1436 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1437 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1438 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1439 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1440 | ocfs2_free_dir_lookup_result(&target_insert); | |
1441 | ||
a81cb88b MF |
1442 | brelse(newfe_bh); |
1443 | brelse(old_inode_bh); | |
1444 | brelse(old_dir_bh); | |
1445 | brelse(new_dir_bh); | |
a81cb88b MF |
1446 | brelse(orphan_entry_bh); |
1447 | brelse(insert_entry_bh); | |
ccd979bd MF |
1448 | |
1449 | mlog_exit(status); | |
1450 | ||
1451 | return status; | |
1452 | } | |
1453 | ||
1454 | /* | |
1455 | * we expect i_size = strlen(symname). Copy symname into the file | |
1456 | * data, including the null terminator. | |
1457 | */ | |
1458 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1459 | handle_t *handle, |
ccd979bd MF |
1460 | struct inode *inode, |
1461 | const char *symname) | |
1462 | { | |
1463 | struct buffer_head **bhs = NULL; | |
1464 | const char *c; | |
1465 | struct super_block *sb = osb->sb; | |
4f902c37 | 1466 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1467 | int virtual, blocks, status, i, bytes_left; |
1468 | ||
1469 | bytes_left = i_size_read(inode) + 1; | |
1470 | /* we can't trust i_blocks because we're actually going to | |
1471 | * write i_size + 1 bytes. */ | |
1472 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1473 | ||
5515eff8 AM |
1474 | mlog_entry("i_blocks = %llu, i_size = %llu, blocks = %d\n", |
1475 | (unsigned long long)inode->i_blocks, | |
1476 | i_size_read(inode), blocks); | |
ccd979bd MF |
1477 | |
1478 | /* Sanity check -- make sure we're going to fit. */ | |
1479 | if (bytes_left > | |
1480 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1481 | status = -EIO; | |
1482 | mlog_errno(status); | |
1483 | goto bail; | |
1484 | } | |
1485 | ||
1486 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1487 | if (!bhs) { | |
1488 | status = -ENOMEM; | |
1489 | mlog_errno(status); | |
1490 | goto bail; | |
1491 | } | |
1492 | ||
49cb8d2d MF |
1493 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1494 | NULL); | |
ccd979bd MF |
1495 | if (status < 0) { |
1496 | mlog_errno(status); | |
1497 | goto bail; | |
1498 | } | |
1499 | ||
1500 | /* links can never be larger than one cluster so we know this | |
1501 | * is all going to be contiguous, but do a sanity check | |
1502 | * anyway. */ | |
1503 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1504 | status = -EIO; | |
1505 | mlog_errno(status); | |
1506 | goto bail; | |
1507 | } | |
1508 | ||
1509 | virtual = 0; | |
1510 | while(bytes_left > 0) { | |
1511 | c = &symname[virtual * sb->s_blocksize]; | |
1512 | ||
1513 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1514 | if (!bhs[virtual]) { | |
1515 | status = -ENOMEM; | |
1516 | mlog_errno(status); | |
1517 | goto bail; | |
1518 | } | |
1519 | ocfs2_set_new_buffer_uptodate(inode, bhs[virtual]); | |
1520 | ||
1521 | status = ocfs2_journal_access(handle, inode, bhs[virtual], | |
1522 | OCFS2_JOURNAL_ACCESS_CREATE); | |
1523 | if (status < 0) { | |
1524 | mlog_errno(status); | |
1525 | goto bail; | |
1526 | } | |
1527 | ||
1528 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1529 | ||
1530 | memcpy(bhs[virtual]->b_data, c, | |
1531 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1532 | bytes_left); | |
1533 | ||
1534 | status = ocfs2_journal_dirty(handle, bhs[virtual]); | |
1535 | if (status < 0) { | |
1536 | mlog_errno(status); | |
1537 | goto bail; | |
1538 | } | |
1539 | ||
1540 | virtual++; | |
1541 | p_blkno++; | |
1542 | bytes_left -= sb->s_blocksize; | |
1543 | } | |
1544 | ||
1545 | status = 0; | |
1546 | bail: | |
1547 | ||
1548 | if (bhs) { | |
1549 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1550 | brelse(bhs[i]); |
ccd979bd MF |
1551 | kfree(bhs); |
1552 | } | |
1553 | ||
1554 | mlog_exit(status); | |
1555 | return status; | |
1556 | } | |
1557 | ||
1558 | static int ocfs2_symlink(struct inode *dir, | |
1559 | struct dentry *dentry, | |
1560 | const char *symname) | |
1561 | { | |
1562 | int status, l, credits; | |
1563 | u64 newsize; | |
1564 | struct ocfs2_super *osb = NULL; | |
1565 | struct inode *inode = NULL; | |
1566 | struct super_block *sb; | |
1567 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1568 | struct buffer_head *parent_fe_bh = NULL; |
1569 | struct ocfs2_dinode *fe = NULL; | |
1570 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1571 | handle_t *handle = NULL; |
ccd979bd MF |
1572 | struct ocfs2_alloc_context *inode_ac = NULL; |
1573 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1574 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1575 | int want_clusters = 0; | |
1576 | int xattr_credits = 0; | |
1577 | struct ocfs2_security_xattr_info si = { | |
1578 | .enable = 1, | |
1579 | }; | |
a90714c1 | 1580 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1581 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
1582 | |
1583 | mlog_entry("(0x%p, 0x%p, symname='%s' actual='%.*s')\n", dir, | |
1584 | dentry, symname, dentry->d_name.len, dentry->d_name.name); | |
1585 | ||
1586 | sb = dir->i_sb; | |
1587 | osb = OCFS2_SB(sb); | |
1588 | ||
1589 | l = strlen(symname) + 1; | |
1590 | ||
1591 | credits = ocfs2_calc_symlink_credits(sb); | |
1592 | ||
ccd979bd | 1593 | /* lock the parent directory */ |
e63aecb6 | 1594 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1595 | if (status < 0) { |
1596 | if (status != -ENOENT) | |
1597 | mlog_errno(status); | |
6d8fc40e | 1598 | return status; |
ccd979bd MF |
1599 | } |
1600 | ||
1601 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
1602 | if (!dirfe->i_links_count) { | |
1603 | /* can't make a file in a deleted directory. */ | |
1604 | status = -ENOENT; | |
1605 | goto bail; | |
1606 | } | |
1607 | ||
1608 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1609 | dentry->d_name.len); | |
1610 | if (status) | |
1611 | goto bail; | |
1612 | ||
1613 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1614 | dentry->d_name.name, | |
4a12ca3a | 1615 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1616 | if (status < 0) { |
1617 | mlog_errno(status); | |
1618 | goto bail; | |
1619 | } | |
1620 | ||
da5cbf2f | 1621 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1622 | if (status < 0) { |
1623 | if (status != -ENOSPC) | |
1624 | mlog_errno(status); | |
1625 | goto bail; | |
1626 | } | |
1627 | ||
f5d36202 TY |
1628 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
1629 | if (!inode) { | |
1630 | status = -ENOMEM; | |
1631 | mlog_errno(status); | |
1632 | goto bail; | |
1633 | } | |
1634 | ||
534eaddd TY |
1635 | /* get security xattr */ |
1636 | status = ocfs2_init_security_get(inode, dir, &si); | |
1637 | if (status) { | |
1638 | if (status == -EOPNOTSUPP) | |
1639 | si.enable = 0; | |
1640 | else { | |
1641 | mlog_errno(status); | |
1642 | goto bail; | |
1643 | } | |
1644 | } | |
1645 | ||
1646 | /* calculate meta data/clusters for setting security xattr */ | |
1647 | if (si.enable) { | |
1648 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1649 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1650 | if (status < 0) { |
534eaddd | 1651 | mlog_errno(status); |
ccd979bd MF |
1652 | goto bail; |
1653 | } | |
1654 | } | |
1655 | ||
534eaddd TY |
1656 | /* don't reserve bitmap space for fast symlinks. */ |
1657 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1658 | want_clusters += 1; | |
1659 | ||
1660 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1661 | if (status < 0) { | |
1662 | if (status != -ENOSPC) | |
1663 | mlog_errno(status); | |
1664 | goto bail; | |
1665 | } | |
1666 | ||
1667 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1668 | if (IS_ERR(handle)) { |
1669 | status = PTR_ERR(handle); | |
1670 | handle = NULL; | |
1671 | mlog_errno(status); | |
1672 | goto bail; | |
1673 | } | |
1674 | ||
a90714c1 JK |
1675 | /* We don't use standard VFS wrapper because we don't want vfs_dq_init |
1676 | * to be called. */ | |
1677 | if (sb_any_quota_active(osb->sb) && | |
1678 | osb->sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA) { | |
1679 | status = -EDQUOT; | |
1680 | goto bail; | |
1681 | } | |
1682 | did_quota_inode = 1; | |
1683 | ||
f5d36202 TY |
1684 | status = ocfs2_mknod_locked(osb, dir, inode, dentry, |
1685 | 0, &new_fe_bh, parent_fe_bh, handle, | |
1686 | inode_ac); | |
ccd979bd MF |
1687 | if (status < 0) { |
1688 | mlog_errno(status); | |
1689 | goto bail; | |
1690 | } | |
1691 | ||
1692 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1693 | inode->i_rdev = 0; | |
1694 | newsize = l - 1; | |
1695 | if (l > ocfs2_fast_symlink_chars(sb)) { | |
dcd0538f MF |
1696 | u32 offset = 0; |
1697 | ||
ccd979bd | 1698 | inode->i_op = &ocfs2_symlink_inode_operations; |
a90714c1 JK |
1699 | if (vfs_dq_alloc_space_nodirty(inode, |
1700 | ocfs2_clusters_to_bytes(osb->sb, 1))) { | |
1701 | status = -EDQUOT; | |
1702 | goto bail; | |
1703 | } | |
1704 | did_quota = 1; | |
0eb8d47e TM |
1705 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1706 | new_fe_bh, | |
1707 | handle, data_ac, NULL, | |
1708 | NULL); | |
ccd979bd MF |
1709 | if (status < 0) { |
1710 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1711 | mlog(ML_ERROR, |
1712 | "Failed to extend file to %llu\n", | |
1713 | (unsigned long long)newsize); | |
ccd979bd MF |
1714 | mlog_errno(status); |
1715 | status = -ENOSPC; | |
1716 | } | |
1717 | goto bail; | |
1718 | } | |
1719 | i_size_write(inode, newsize); | |
8110b073 | 1720 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd MF |
1721 | } else { |
1722 | inode->i_op = &ocfs2_fast_symlink_inode_operations; | |
1723 | memcpy((char *) fe->id2.i_symlink, symname, l); | |
1724 | i_size_write(inode, newsize); | |
1725 | inode->i_blocks = 0; | |
1726 | } | |
1727 | ||
1728 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1729 | if (status < 0) { | |
1730 | mlog_errno(status); | |
1731 | goto bail; | |
1732 | } | |
1733 | ||
1734 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
1735 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
1736 | symname); | |
1737 | if (status < 0) { | |
1738 | mlog_errno(status); | |
1739 | goto bail; | |
1740 | } | |
1741 | } | |
1742 | ||
534eaddd TY |
1743 | if (si.enable) { |
1744 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
1745 | xattr_ac, data_ac); | |
1746 | if (status < 0) { | |
1747 | mlog_errno(status); | |
1748 | goto bail; | |
1749 | } | |
1750 | } | |
1751 | ||
ccd979bd MF |
1752 | status = ocfs2_add_entry(handle, dentry, inode, |
1753 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
4a12ca3a | 1754 | &lookup); |
ccd979bd MF |
1755 | if (status < 0) { |
1756 | mlog_errno(status); | |
1757 | goto bail; | |
1758 | } | |
1759 | ||
0027dd5b | 1760 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
1761 | if (status) { |
1762 | mlog_errno(status); | |
1763 | goto bail; | |
1764 | } | |
1765 | ||
ccd979bd MF |
1766 | insert_inode_hash(inode); |
1767 | dentry->d_op = &ocfs2_dentry_ops; | |
1768 | d_instantiate(dentry, inode); | |
1769 | bail: | |
a90714c1 JK |
1770 | if (status < 0 && did_quota) |
1771 | vfs_dq_free_space_nodirty(inode, | |
1772 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1773 | if (status < 0 && did_quota_inode) | |
1774 | vfs_dq_free_inode(inode); | |
ccd979bd | 1775 | if (handle) |
02dc1af4 | 1776 | ocfs2_commit_trans(osb, handle); |
6d8fc40e | 1777 | |
e63aecb6 | 1778 | ocfs2_inode_unlock(dir, 1); |
6d8fc40e | 1779 | |
a81cb88b MF |
1780 | brelse(new_fe_bh); |
1781 | brelse(parent_fe_bh); | |
534eaddd TY |
1782 | kfree(si.name); |
1783 | kfree(si.value); | |
4a12ca3a | 1784 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
1785 | if (inode_ac) |
1786 | ocfs2_free_alloc_context(inode_ac); | |
1787 | if (data_ac) | |
1788 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
1789 | if (xattr_ac) |
1790 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 TY |
1791 | if ((status < 0) && inode) { |
1792 | clear_nlink(inode); | |
ccd979bd | 1793 | iput(inode); |
f5d36202 | 1794 | } |
ccd979bd MF |
1795 | |
1796 | mlog_exit(status); | |
1797 | ||
1798 | return status; | |
1799 | } | |
1800 | ||
ccd979bd MF |
1801 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
1802 | { | |
1803 | int status, namelen; | |
1804 | ||
1805 | mlog_entry_void(); | |
1806 | ||
b0697053 MF |
1807 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
1808 | (long long)blkno); | |
ccd979bd MF |
1809 | if (namelen <= 0) { |
1810 | if (namelen) | |
1811 | status = namelen; | |
1812 | else | |
1813 | status = -EINVAL; | |
1814 | mlog_errno(status); | |
1815 | goto bail; | |
1816 | } | |
1817 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
1818 | status = -EINVAL; | |
1819 | mlog_errno(status); | |
1820 | goto bail; | |
1821 | } | |
1822 | ||
1823 | mlog(0, "built filename '%s' for orphan dir (len=%d)\n", name, | |
1824 | namelen); | |
1825 | ||
1826 | status = 0; | |
1827 | bail: | |
1828 | mlog_exit(status); | |
1829 | return status; | |
1830 | } | |
1831 | ||
1832 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
5098c27b | 1833 | struct inode **ret_orphan_dir, |
ccd979bd MF |
1834 | struct inode *inode, |
1835 | char *name, | |
4a12ca3a | 1836 | struct ocfs2_dir_lookup_result *lookup) |
ccd979bd | 1837 | { |
5098c27b | 1838 | struct inode *orphan_dir_inode; |
ccd979bd MF |
1839 | struct buffer_head *orphan_dir_bh = NULL; |
1840 | int status = 0; | |
1841 | ||
1842 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
1843 | if (status < 0) { | |
1844 | mlog_errno(status); | |
5098c27b | 1845 | return status; |
ccd979bd MF |
1846 | } |
1847 | ||
1848 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
1849 | ORPHAN_DIR_SYSTEM_INODE, | |
1850 | osb->slot_num); | |
1851 | if (!orphan_dir_inode) { | |
1852 | status = -ENOENT; | |
1853 | mlog_errno(status); | |
5098c27b | 1854 | return status; |
ccd979bd MF |
1855 | } |
1856 | ||
5098c27b MF |
1857 | mutex_lock(&orphan_dir_inode->i_mutex); |
1858 | ||
e63aecb6 | 1859 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
ccd979bd MF |
1860 | if (status < 0) { |
1861 | mlog_errno(status); | |
1862 | goto leave; | |
1863 | } | |
1864 | ||
1865 | status = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
1866 | orphan_dir_bh, name, | |
4a12ca3a | 1867 | OCFS2_ORPHAN_NAMELEN, lookup); |
ccd979bd | 1868 | if (status < 0) { |
e63aecb6 | 1869 | ocfs2_inode_unlock(orphan_dir_inode, 1); |
5098c27b | 1870 | |
ccd979bd MF |
1871 | mlog_errno(status); |
1872 | goto leave; | |
1873 | } | |
1874 | ||
5098c27b MF |
1875 | *ret_orphan_dir = orphan_dir_inode; |
1876 | ||
ccd979bd | 1877 | leave: |
5098c27b MF |
1878 | if (status) { |
1879 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
ccd979bd | 1880 | iput(orphan_dir_inode); |
5098c27b | 1881 | } |
ccd979bd | 1882 | |
a81cb88b | 1883 | brelse(orphan_dir_bh); |
ccd979bd MF |
1884 | |
1885 | mlog_exit(status); | |
1886 | return status; | |
1887 | } | |
1888 | ||
1889 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 1890 | handle_t *handle, |
ccd979bd MF |
1891 | struct inode *inode, |
1892 | struct ocfs2_dinode *fe, | |
1893 | char *name, | |
4a12ca3a | 1894 | struct ocfs2_dir_lookup_result *lookup, |
5098c27b | 1895 | struct inode *orphan_dir_inode) |
ccd979bd | 1896 | { |
ccd979bd MF |
1897 | struct buffer_head *orphan_dir_bh = NULL; |
1898 | int status = 0; | |
1899 | struct ocfs2_dinode *orphan_fe; | |
1900 | ||
1901 | mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino); | |
1902 | ||
b657c95c | 1903 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
1904 | if (status < 0) { |
1905 | mlog_errno(status); | |
1906 | goto leave; | |
1907 | } | |
1908 | ||
13723d00 JB |
1909 | status = ocfs2_journal_access_di(handle, orphan_dir_inode, orphan_dir_bh, |
1910 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd MF |
1911 | if (status < 0) { |
1912 | mlog_errno(status); | |
1913 | goto leave; | |
1914 | } | |
1915 | ||
1916 | /* we're a cluster, and nlink can change on disk from | |
1917 | * underneath us... */ | |
1918 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
1919 | if (S_ISDIR(inode->i_mode)) | |
1920 | le16_add_cpu(&orphan_fe->i_links_count, 1); | |
1921 | orphan_dir_inode->i_nlink = le16_to_cpu(orphan_fe->i_links_count); | |
1922 | ||
1923 | status = ocfs2_journal_dirty(handle, orphan_dir_bh); | |
1924 | if (status < 0) { | |
1925 | mlog_errno(status); | |
1926 | goto leave; | |
1927 | } | |
1928 | ||
1929 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
1930 | OCFS2_ORPHAN_NAMELEN, inode, | |
1931 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 1932 | orphan_dir_bh, lookup); |
ccd979bd MF |
1933 | if (status < 0) { |
1934 | mlog_errno(status); | |
1935 | goto leave; | |
1936 | } | |
1937 | ||
1938 | le32_add_cpu(&fe->i_flags, OCFS2_ORPHANED_FL); | |
1939 | ||
1940 | /* Record which orphan dir our inode now resides | |
1941 | * in. delete_inode will use this to determine which orphan | |
1942 | * dir to lock. */ | |
50008630 | 1943 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); |
ccd979bd | 1944 | |
b0697053 MF |
1945 | mlog(0, "Inode %llu orphaned in slot %d\n", |
1946 | (unsigned long long)OCFS2_I(inode)->ip_blkno, osb->slot_num); | |
ccd979bd MF |
1947 | |
1948 | leave: | |
a81cb88b | 1949 | brelse(orphan_dir_bh); |
ccd979bd MF |
1950 | |
1951 | mlog_exit(status); | |
1952 | return status; | |
1953 | } | |
1954 | ||
1955 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
1956 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 1957 | handle_t *handle, |
ccd979bd MF |
1958 | struct inode *orphan_dir_inode, |
1959 | struct inode *inode, | |
1960 | struct buffer_head *orphan_dir_bh) | |
1961 | { | |
1962 | char name[OCFS2_ORPHAN_NAMELEN + 1]; | |
1963 | struct ocfs2_dinode *orphan_fe; | |
1964 | int status = 0; | |
4a12ca3a | 1965 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd MF |
1966 | |
1967 | mlog_entry_void(); | |
1968 | ||
1969 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
1970 | if (status < 0) { | |
1971 | mlog_errno(status); | |
1972 | goto leave; | |
1973 | } | |
1974 | ||
b0697053 MF |
1975 | mlog(0, "removing '%s' from orphan dir %llu (namelen=%d)\n", |
1976 | name, (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
1977 | OCFS2_ORPHAN_NAMELEN); | |
ccd979bd MF |
1978 | |
1979 | /* find it's spot in the orphan directory */ | |
4a12ca3a MF |
1980 | status = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, orphan_dir_inode, |
1981 | &lookup); | |
1982 | if (status) { | |
ccd979bd MF |
1983 | mlog_errno(status); |
1984 | goto leave; | |
1985 | } | |
1986 | ||
1987 | /* remove it from the orphan directory */ | |
4a12ca3a | 1988 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
1989 | if (status < 0) { |
1990 | mlog_errno(status); | |
1991 | goto leave; | |
1992 | } | |
1993 | ||
13723d00 JB |
1994 | status = ocfs2_journal_access_di(handle,orphan_dir_inode, orphan_dir_bh, |
1995 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd MF |
1996 | if (status < 0) { |
1997 | mlog_errno(status); | |
1998 | goto leave; | |
1999 | } | |
2000 | ||
2001 | /* do the i_nlink dance! :) */ | |
2002 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2003 | if (S_ISDIR(inode->i_mode)) | |
2004 | le16_add_cpu(&orphan_fe->i_links_count, -1); | |
2005 | orphan_dir_inode->i_nlink = le16_to_cpu(orphan_fe->i_links_count); | |
2006 | ||
2007 | status = ocfs2_journal_dirty(handle, orphan_dir_bh); | |
2008 | if (status < 0) { | |
2009 | mlog_errno(status); | |
2010 | goto leave; | |
2011 | } | |
2012 | ||
2013 | leave: | |
4a12ca3a | 2014 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
2015 | |
2016 | mlog_exit(status); | |
2017 | return status; | |
2018 | } | |
2019 | ||
92e1d5be | 2020 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2021 | .create = ocfs2_create, |
2022 | .lookup = ocfs2_lookup, | |
2023 | .link = ocfs2_link, | |
2024 | .unlink = ocfs2_unlink, | |
2025 | .rmdir = ocfs2_unlink, | |
2026 | .symlink = ocfs2_symlink, | |
2027 | .mkdir = ocfs2_mkdir, | |
2028 | .mknod = ocfs2_mknod, | |
2029 | .rename = ocfs2_rename, | |
2030 | .setattr = ocfs2_setattr, | |
2031 | .getattr = ocfs2_getattr, | |
d38eb8db | 2032 | .permission = ocfs2_permission, |
cf1d6c76 TY |
2033 | .setxattr = generic_setxattr, |
2034 | .getxattr = generic_getxattr, | |
2035 | .listxattr = ocfs2_listxattr, | |
2036 | .removexattr = generic_removexattr, | |
ccd979bd | 2037 | }; |