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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> | |
43 | ||
44 | #define MLOG_MASK_PREFIX ML_NAMEI | |
45 | #include <cluster/masklog.h> | |
46 | ||
47 | #include "ocfs2.h" | |
48 | ||
49 | #include "alloc.h" | |
50 | #include "dcache.h" | |
51 | #include "dir.h" | |
52 | #include "dlmglue.h" | |
53 | #include "extent_map.h" | |
54 | #include "file.h" | |
55 | #include "inode.h" | |
56 | #include "journal.h" | |
57 | #include "namei.h" | |
58 | #include "suballoc.h" | |
aa958874 | 59 | #include "super.h" |
ccd979bd MF |
60 | #include "symlink.h" |
61 | #include "sysfile.h" | |
62 | #include "uptodate.h" | |
cf1d6c76 | 63 | #include "xattr.h" |
89c38bd0 | 64 | #include "acl.h" |
ccd979bd MF |
65 | |
66 | #include "buffer_head_io.h" | |
67 | ||
ccd979bd MF |
68 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
69 | struct inode *dir, | |
f5d36202 TY |
70 | struct inode *inode, |
71 | struct dentry *dentry, | |
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, |
ccd979bd MF |
80 | struct inode *inode, |
81 | char *name, | |
82 | struct buffer_head **de_bh); | |
83 | ||
84 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 85 | handle_t *handle, |
ccd979bd MF |
86 | struct inode *inode, |
87 | struct ocfs2_dinode *fe, | |
88 | char *name, | |
5098c27b MF |
89 | struct buffer_head *de_bh, |
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 | |
e63aecb6 | 120 | status = ocfs2_inode_lock(dir, NULL, 0); |
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; | |
215 | return inode; | |
216 | } | |
217 | ||
ccd979bd MF |
218 | static int ocfs2_mknod(struct inode *dir, |
219 | struct dentry *dentry, | |
220 | int mode, | |
221 | dev_t dev) | |
222 | { | |
223 | int status = 0; | |
224 | struct buffer_head *parent_fe_bh = NULL; | |
1fabe148 | 225 | handle_t *handle = NULL; |
ccd979bd MF |
226 | struct ocfs2_super *osb; |
227 | struct ocfs2_dinode *dirfe; | |
228 | struct buffer_head *new_fe_bh = NULL; | |
229 | struct buffer_head *de_bh = NULL; | |
230 | struct inode *inode = NULL; | |
231 | struct ocfs2_alloc_context *inode_ac = NULL; | |
232 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
233 | struct ocfs2_alloc_context *xattr_ac = NULL; |
234 | int want_clusters = 0; | |
235 | int xattr_credits = 0; | |
236 | struct ocfs2_security_xattr_info si = { | |
237 | .enable = 1, | |
238 | }; | |
ccd979bd MF |
239 | |
240 | mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, mode, | |
241 | (unsigned long)dev, dentry->d_name.len, | |
242 | dentry->d_name.name); | |
243 | ||
244 | /* get our super block */ | |
245 | osb = OCFS2_SB(dir->i_sb); | |
246 | ||
e63aecb6 | 247 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
e3a82138 MF |
248 | if (status < 0) { |
249 | if (status != -ENOENT) | |
250 | mlog_errno(status); | |
251 | return status; | |
252 | } | |
253 | ||
a663e305 MF |
254 | if (S_ISDIR(mode) && (dir->i_nlink >= OCFS2_LINK_MAX)) { |
255 | status = -EMLINK; | |
256 | goto leave; | |
257 | } | |
258 | ||
ccd979bd MF |
259 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
260 | if (!dirfe->i_links_count) { | |
261 | /* can't make a file in a deleted directory. */ | |
262 | status = -ENOENT; | |
263 | goto leave; | |
264 | } | |
265 | ||
266 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
267 | dentry->d_name.len); | |
268 | if (status) | |
269 | goto leave; | |
270 | ||
271 | /* get a spot inside the dir. */ | |
272 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
273 | dentry->d_name.name, | |
274 | dentry->d_name.len, &de_bh); | |
275 | if (status < 0) { | |
276 | mlog_errno(status); | |
277 | goto leave; | |
278 | } | |
279 | ||
280 | /* reserve an inode spot */ | |
da5cbf2f | 281 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
282 | if (status < 0) { |
283 | if (status != -ENOSPC) | |
284 | mlog_errno(status); | |
285 | goto leave; | |
286 | } | |
287 | ||
f5d36202 TY |
288 | inode = ocfs2_get_init_inode(dir, mode); |
289 | if (!inode) { | |
290 | status = -ENOMEM; | |
291 | mlog_errno(status); | |
292 | goto leave; | |
293 | } | |
294 | ||
534eaddd TY |
295 | /* get security xattr */ |
296 | status = ocfs2_init_security_get(inode, dir, &si); | |
297 | if (status) { | |
298 | if (status == -EOPNOTSUPP) | |
299 | si.enable = 0; | |
300 | else { | |
301 | mlog_errno(status); | |
302 | goto leave; | |
303 | } | |
304 | } | |
305 | ||
89c38bd0 TY |
306 | /* calculate meta data/clusters for setting security and acl xattr */ |
307 | status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode, | |
308 | &si, &want_clusters, | |
309 | &xattr_credits, &xattr_ac); | |
310 | if (status < 0) { | |
311 | mlog_errno(status); | |
312 | goto leave; | |
ccd979bd MF |
313 | } |
314 | ||
534eaddd TY |
315 | /* Reserve a cluster if creating an extent based directory. */ |
316 | if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) | |
317 | want_clusters += 1; | |
318 | ||
319 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
320 | if (status < 0) { | |
321 | if (status != -ENOSPC) | |
322 | mlog_errno(status); | |
323 | goto leave; | |
324 | } | |
325 | ||
326 | handle = ocfs2_start_trans(osb, OCFS2_MKNOD_CREDITS + xattr_credits); | |
ccd979bd MF |
327 | if (IS_ERR(handle)) { |
328 | status = PTR_ERR(handle); | |
329 | handle = NULL; | |
330 | mlog_errno(status); | |
331 | goto leave; | |
332 | } | |
333 | ||
334 | /* do the real work now. */ | |
f5d36202 | 335 | status = ocfs2_mknod_locked(osb, dir, inode, dentry, dev, |
ccd979bd | 336 | &new_fe_bh, parent_fe_bh, handle, |
f5d36202 | 337 | inode_ac); |
ccd979bd MF |
338 | if (status < 0) { |
339 | mlog_errno(status); | |
340 | goto leave; | |
341 | } | |
342 | ||
343 | if (S_ISDIR(mode)) { | |
344 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, | |
345 | new_fe_bh, data_ac); | |
346 | if (status < 0) { | |
347 | mlog_errno(status); | |
348 | goto leave; | |
349 | } | |
350 | ||
351 | status = ocfs2_journal_access(handle, dir, parent_fe_bh, | |
352 | OCFS2_JOURNAL_ACCESS_WRITE); | |
353 | if (status < 0) { | |
354 | mlog_errno(status); | |
355 | goto leave; | |
356 | } | |
357 | le16_add_cpu(&dirfe->i_links_count, 1); | |
358 | status = ocfs2_journal_dirty(handle, parent_fe_bh); | |
359 | if (status < 0) { | |
360 | mlog_errno(status); | |
361 | goto leave; | |
362 | } | |
d8c76e6f | 363 | inc_nlink(dir); |
ccd979bd MF |
364 | } |
365 | ||
89c38bd0 TY |
366 | status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh, |
367 | xattr_ac, data_ac); | |
368 | if (status < 0) { | |
369 | mlog_errno(status); | |
370 | goto leave; | |
371 | } | |
372 | ||
534eaddd TY |
373 | if (si.enable) { |
374 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
375 | xattr_ac, data_ac); | |
376 | if (status < 0) { | |
377 | mlog_errno(status); | |
378 | goto leave; | |
379 | } | |
380 | } | |
381 | ||
ccd979bd MF |
382 | status = ocfs2_add_entry(handle, dentry, inode, |
383 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
384 | de_bh); | |
385 | if (status < 0) { | |
386 | mlog_errno(status); | |
387 | goto leave; | |
388 | } | |
389 | ||
379dfe9d | 390 | status = ocfs2_dentry_attach_lock(dentry, inode, |
0027dd5b | 391 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
392 | if (status) { |
393 | mlog_errno(status); | |
394 | goto leave; | |
395 | } | |
396 | ||
ccd979bd MF |
397 | insert_inode_hash(inode); |
398 | dentry->d_op = &ocfs2_dentry_ops; | |
399 | d_instantiate(dentry, inode); | |
400 | status = 0; | |
401 | leave: | |
402 | if (handle) | |
02dc1af4 | 403 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 404 | |
e63aecb6 | 405 | ocfs2_inode_unlock(dir, 1); |
e3a82138 | 406 | |
ccd979bd MF |
407 | if (status == -ENOSPC) |
408 | mlog(0, "Disk is full\n"); | |
409 | ||
a81cb88b MF |
410 | brelse(new_fe_bh); |
411 | brelse(de_bh); | |
412 | brelse(parent_fe_bh); | |
534eaddd TY |
413 | kfree(si.name); |
414 | kfree(si.value); | |
ccd979bd | 415 | |
f5d36202 TY |
416 | if ((status < 0) && inode) { |
417 | clear_nlink(inode); | |
ccd979bd | 418 | iput(inode); |
f5d36202 | 419 | } |
ccd979bd MF |
420 | |
421 | if (inode_ac) | |
422 | ocfs2_free_alloc_context(inode_ac); | |
423 | ||
424 | if (data_ac) | |
425 | ocfs2_free_alloc_context(data_ac); | |
426 | ||
534eaddd TY |
427 | if (xattr_ac) |
428 | ocfs2_free_alloc_context(xattr_ac); | |
429 | ||
ccd979bd MF |
430 | mlog_exit(status); |
431 | ||
432 | return status; | |
433 | } | |
434 | ||
435 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, | |
436 | struct inode *dir, | |
f5d36202 TY |
437 | struct inode *inode, |
438 | struct dentry *dentry, | |
ccd979bd MF |
439 | dev_t dev, |
440 | struct buffer_head **new_fe_bh, | |
441 | struct buffer_head *parent_fe_bh, | |
1fabe148 | 442 | handle_t *handle, |
ccd979bd MF |
443 | struct ocfs2_alloc_context *inode_ac) |
444 | { | |
445 | int status = 0; | |
446 | struct ocfs2_dinode *fe = NULL; | |
447 | struct ocfs2_extent_list *fel; | |
448 | u64 fe_blkno = 0; | |
449 | u16 suballoc_bit; | |
ccd979bd | 450 | |
f5d36202 TY |
451 | mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, |
452 | inode->i_mode, (unsigned long)dev, dentry->d_name.len, | |
ccd979bd MF |
453 | dentry->d_name.name); |
454 | ||
455 | *new_fe_bh = NULL; | |
ccd979bd MF |
456 | |
457 | status = ocfs2_claim_new_inode(osb, handle, inode_ac, &suballoc_bit, | |
458 | &fe_blkno); | |
459 | if (status < 0) { | |
460 | mlog_errno(status); | |
461 | goto leave; | |
462 | } | |
463 | ||
ccd979bd MF |
464 | /* populate as many fields early on as possible - many of |
465 | * these are used by the support functions here and in | |
466 | * callers. */ | |
467 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
468 | OCFS2_I(inode)->ip_blkno = fe_blkno; | |
ccd979bd MF |
469 | spin_lock(&osb->osb_lock); |
470 | inode->i_generation = osb->s_next_generation++; | |
471 | spin_unlock(&osb->osb_lock); | |
472 | ||
473 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
474 | if (!*new_fe_bh) { | |
475 | status = -EIO; | |
476 | mlog_errno(status); | |
477 | goto leave; | |
478 | } | |
479 | ocfs2_set_new_buffer_uptodate(inode, *new_fe_bh); | |
480 | ||
481 | status = ocfs2_journal_access(handle, inode, *new_fe_bh, | |
482 | OCFS2_JOURNAL_ACCESS_CREATE); | |
483 | if (status < 0) { | |
484 | mlog_errno(status); | |
485 | goto leave; | |
486 | } | |
487 | ||
488 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
489 | memset(fe, 0, osb->sb->s_blocksize); | |
490 | ||
491 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
492 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
493 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
494 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); | |
4d0ddb2c | 495 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
f5d36202 TY |
496 | fe->i_uid = cpu_to_le32(inode->i_uid); |
497 | fe->i_gid = cpu_to_le32(inode->i_gid); | |
498 | fe->i_mode = cpu_to_le16(inode->i_mode); | |
499 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 500 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
ccd979bd MF |
501 | fe->i_links_count = cpu_to_le16(inode->i_nlink); |
502 | ||
503 | fe->i_last_eb_blk = 0; | |
504 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
505 | le32_add_cpu(&fe->i_flags, OCFS2_VALID_FL); | |
506 | fe->i_atime = fe->i_ctime = fe->i_mtime = | |
507 | cpu_to_le64(CURRENT_TIME.tv_sec); | |
508 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = | |
509 | cpu_to_le32(CURRENT_TIME.tv_nsec); | |
510 | fe->i_dtime = 0; | |
511 | ||
5b6a3a2b MF |
512 | /* |
513 | * If supported, directories start with inline data. | |
514 | */ | |
f5d36202 | 515 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
516 | u16 feat = le16_to_cpu(fe->i_dyn_features); |
517 | ||
518 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); | |
519 | ||
520 | fe->id2.i_data.id_count = cpu_to_le16(ocfs2_max_inline_data(osb->sb)); | |
521 | } else { | |
522 | fel = &fe->id2.i_list; | |
523 | fel->l_tree_depth = 0; | |
524 | fel->l_next_free_rec = 0; | |
525 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
526 | } | |
ccd979bd MF |
527 | |
528 | status = ocfs2_journal_dirty(handle, *new_fe_bh); | |
529 | if (status < 0) { | |
530 | mlog_errno(status); | |
531 | goto leave; | |
532 | } | |
533 | ||
534 | if (ocfs2_populate_inode(inode, fe, 1) < 0) { | |
535 | mlog(ML_ERROR, "populate inode failed! bh->b_blocknr=%llu, " | |
b0697053 | 536 | "i_blkno=%llu, i_ino=%lu\n", |
1ca1a111 MF |
537 | (unsigned long long)(*new_fe_bh)->b_blocknr, |
538 | (unsigned long long)le64_to_cpu(fe->i_blkno), | |
539 | inode->i_ino); | |
ccd979bd MF |
540 | BUG(); |
541 | } | |
542 | ||
543 | ocfs2_inode_set_new(osb, inode); | |
c271c5c2 SM |
544 | if (!ocfs2_mount_local(osb)) { |
545 | status = ocfs2_create_new_inode_locks(inode); | |
546 | if (status < 0) | |
547 | mlog_errno(status); | |
548 | } | |
ccd979bd MF |
549 | |
550 | status = 0; /* error in ocfs2_create_new_inode_locks is not | |
551 | * critical */ | |
552 | ||
ccd979bd MF |
553 | leave: |
554 | if (status < 0) { | |
555 | if (*new_fe_bh) { | |
556 | brelse(*new_fe_bh); | |
557 | *new_fe_bh = NULL; | |
558 | } | |
ccd979bd MF |
559 | } |
560 | ||
561 | mlog_exit(status); | |
562 | return status; | |
563 | } | |
564 | ||
565 | static int ocfs2_mkdir(struct inode *dir, | |
566 | struct dentry *dentry, | |
567 | int mode) | |
568 | { | |
569 | int ret; | |
570 | ||
571 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, | |
572 | dentry->d_name.len, dentry->d_name.name); | |
573 | ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0); | |
574 | mlog_exit(ret); | |
575 | ||
576 | return ret; | |
577 | } | |
578 | ||
579 | static int ocfs2_create(struct inode *dir, | |
580 | struct dentry *dentry, | |
581 | int mode, | |
582 | struct nameidata *nd) | |
583 | { | |
584 | int ret; | |
585 | ||
586 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, | |
587 | dentry->d_name.len, dentry->d_name.name); | |
588 | ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0); | |
589 | mlog_exit(ret); | |
590 | ||
591 | return ret; | |
592 | } | |
593 | ||
594 | static int ocfs2_link(struct dentry *old_dentry, | |
595 | struct inode *dir, | |
596 | struct dentry *dentry) | |
597 | { | |
1fabe148 | 598 | handle_t *handle; |
ccd979bd MF |
599 | struct inode *inode = old_dentry->d_inode; |
600 | int err; | |
601 | struct buffer_head *fe_bh = NULL; | |
602 | struct buffer_head *parent_fe_bh = NULL; | |
603 | struct buffer_head *de_bh = NULL; | |
604 | struct ocfs2_dinode *fe = NULL; | |
605 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
606 | ||
607 | mlog_entry("(inode=%lu, old='%.*s' new='%.*s')\n", inode->i_ino, | |
608 | old_dentry->d_name.len, old_dentry->d_name.name, | |
609 | dentry->d_name.len, dentry->d_name.name); | |
610 | ||
123a9643 MF |
611 | if (S_ISDIR(inode->i_mode)) |
612 | return -EPERM; | |
ccd979bd | 613 | |
e63aecb6 | 614 | err = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
615 | if (err < 0) { |
616 | if (err != -ENOENT) | |
617 | mlog_errno(err); | |
123a9643 | 618 | return err; |
ccd979bd MF |
619 | } |
620 | ||
0f62de2c TY |
621 | if (!dir->i_nlink) { |
622 | err = -ENOENT; | |
123a9643 | 623 | goto out; |
0f62de2c TY |
624 | } |
625 | ||
ccd979bd MF |
626 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
627 | dentry->d_name.len); | |
628 | if (err) | |
123a9643 | 629 | goto out; |
ccd979bd MF |
630 | |
631 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
632 | dentry->d_name.name, | |
633 | dentry->d_name.len, &de_bh); | |
634 | if (err < 0) { | |
635 | mlog_errno(err); | |
123a9643 | 636 | goto out; |
ccd979bd MF |
637 | } |
638 | ||
e63aecb6 | 639 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
640 | if (err < 0) { |
641 | if (err != -ENOENT) | |
642 | mlog_errno(err); | |
123a9643 | 643 | goto out; |
ccd979bd MF |
644 | } |
645 | ||
646 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
647 | if (le16_to_cpu(fe->i_links_count) >= OCFS2_LINK_MAX) { | |
648 | err = -EMLINK; | |
123a9643 | 649 | goto out_unlock_inode; |
ccd979bd MF |
650 | } |
651 | ||
65eff9cc | 652 | handle = ocfs2_start_trans(osb, OCFS2_LINK_CREDITS); |
ccd979bd MF |
653 | if (IS_ERR(handle)) { |
654 | err = PTR_ERR(handle); | |
655 | handle = NULL; | |
656 | mlog_errno(err); | |
123a9643 | 657 | goto out_unlock_inode; |
ccd979bd MF |
658 | } |
659 | ||
660 | err = ocfs2_journal_access(handle, inode, fe_bh, | |
661 | OCFS2_JOURNAL_ACCESS_WRITE); | |
662 | if (err < 0) { | |
663 | mlog_errno(err); | |
123a9643 | 664 | goto out_commit; |
ccd979bd MF |
665 | } |
666 | ||
d8c76e6f | 667 | inc_nlink(inode); |
ccd979bd MF |
668 | inode->i_ctime = CURRENT_TIME; |
669 | fe->i_links_count = cpu_to_le16(inode->i_nlink); | |
670 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); | |
671 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
672 | ||
673 | err = ocfs2_journal_dirty(handle, fe_bh); | |
674 | if (err < 0) { | |
675 | le16_add_cpu(&fe->i_links_count, -1); | |
9a53c3a7 | 676 | drop_nlink(inode); |
ccd979bd | 677 | mlog_errno(err); |
123a9643 | 678 | goto out_commit; |
ccd979bd MF |
679 | } |
680 | ||
681 | err = ocfs2_add_entry(handle, dentry, inode, | |
682 | OCFS2_I(inode)->ip_blkno, | |
683 | parent_fe_bh, de_bh); | |
684 | if (err) { | |
685 | le16_add_cpu(&fe->i_links_count, -1); | |
9a53c3a7 | 686 | drop_nlink(inode); |
ccd979bd | 687 | mlog_errno(err); |
123a9643 | 688 | goto out_commit; |
ccd979bd MF |
689 | } |
690 | ||
0027dd5b | 691 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
692 | if (err) { |
693 | mlog_errno(err); | |
123a9643 | 694 | goto out_commit; |
379dfe9d MF |
695 | } |
696 | ||
ccd979bd MF |
697 | atomic_inc(&inode->i_count); |
698 | dentry->d_op = &ocfs2_dentry_ops; | |
699 | d_instantiate(dentry, inode); | |
123a9643 MF |
700 | |
701 | out_commit: | |
02dc1af4 | 702 | ocfs2_commit_trans(osb, handle); |
123a9643 | 703 | out_unlock_inode: |
e63aecb6 | 704 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
705 | |
706 | out: | |
e63aecb6 | 707 | ocfs2_inode_unlock(dir, 1); |
123a9643 | 708 | |
a81cb88b MF |
709 | brelse(de_bh); |
710 | brelse(fe_bh); | |
711 | brelse(parent_fe_bh); | |
ccd979bd MF |
712 | |
713 | mlog_exit(err); | |
714 | ||
715 | return err; | |
716 | } | |
717 | ||
379dfe9d MF |
718 | /* |
719 | * Takes and drops an exclusive lock on the given dentry. This will | |
720 | * force other nodes to drop it. | |
721 | */ | |
722 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
723 | { | |
724 | int ret; | |
725 | ||
726 | ret = ocfs2_dentry_lock(dentry, 1); | |
727 | if (ret) | |
728 | mlog_errno(ret); | |
729 | else | |
730 | ocfs2_dentry_unlock(dentry, 1); | |
731 | ||
732 | return ret; | |
733 | } | |
734 | ||
17ff7856 MF |
735 | static inline int inode_is_unlinkable(struct inode *inode) |
736 | { | |
737 | if (S_ISDIR(inode->i_mode)) { | |
738 | if (inode->i_nlink == 2) | |
739 | return 1; | |
740 | return 0; | |
741 | } | |
742 | ||
743 | if (inode->i_nlink == 1) | |
744 | return 1; | |
745 | return 0; | |
746 | } | |
747 | ||
ccd979bd MF |
748 | static int ocfs2_unlink(struct inode *dir, |
749 | struct dentry *dentry) | |
750 | { | |
751 | int status; | |
30a4f5e8 | 752 | int child_locked = 0; |
ccd979bd | 753 | struct inode *inode = dentry->d_inode; |
5098c27b | 754 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
755 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
756 | u64 blkno; | |
757 | struct ocfs2_dinode *fe = NULL; | |
758 | struct buffer_head *fe_bh = NULL; | |
759 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 760 | handle_t *handle = NULL; |
ccd979bd MF |
761 | struct ocfs2_dir_entry *dirent = NULL; |
762 | struct buffer_head *dirent_bh = NULL; | |
763 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
764 | struct buffer_head *orphan_entry_bh = NULL; | |
765 | ||
766 | mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry, | |
767 | dentry->d_name.len, dentry->d_name.name); | |
768 | ||
769 | BUG_ON(dentry->d_parent->d_inode != dir); | |
770 | ||
b0697053 | 771 | mlog(0, "ino = %llu\n", (unsigned long long)OCFS2_I(inode)->ip_blkno); |
ccd979bd MF |
772 | |
773 | if (inode == osb->root_inode) { | |
774 | mlog(0, "Cannot delete the root directory\n"); | |
30a4f5e8 | 775 | return -EPERM; |
ccd979bd MF |
776 | } |
777 | ||
e63aecb6 | 778 | status = ocfs2_inode_lock(dir, &parent_node_bh, 1); |
ccd979bd MF |
779 | if (status < 0) { |
780 | if (status != -ENOENT) | |
781 | mlog_errno(status); | |
30a4f5e8 | 782 | return status; |
ccd979bd MF |
783 | } |
784 | ||
785 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
786 | dentry->d_name.len, &blkno, | |
787 | dir, &dirent_bh, &dirent); | |
788 | if (status < 0) { | |
789 | if (status != -ENOENT) | |
790 | mlog_errno(status); | |
791 | goto leave; | |
792 | } | |
793 | ||
794 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
795 | status = -ENOENT; | |
796 | ||
b0697053 MF |
797 | mlog(0, "ip_blkno %llu != dirent blkno %llu ip_flags = %x\n", |
798 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
799 | (unsigned long long)blkno, OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
800 | goto leave; |
801 | } | |
802 | ||
e63aecb6 | 803 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
804 | if (status < 0) { |
805 | if (status != -ENOENT) | |
806 | mlog_errno(status); | |
807 | goto leave; | |
808 | } | |
30a4f5e8 | 809 | child_locked = 1; |
ccd979bd MF |
810 | |
811 | if (S_ISDIR(inode->i_mode)) { | |
812 | if (!ocfs2_empty_dir(inode)) { | |
813 | status = -ENOTEMPTY; | |
814 | goto leave; | |
815 | } else if (inode->i_nlink != 2) { | |
816 | status = -ENOTEMPTY; | |
817 | goto leave; | |
818 | } | |
819 | } | |
820 | ||
379dfe9d | 821 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 822 | if (status < 0) { |
34d024f8 | 823 | /* This remote delete should succeed under all normal |
ccd979bd MF |
824 | * circumstances. */ |
825 | mlog_errno(status); | |
826 | goto leave; | |
827 | } | |
828 | ||
17ff7856 | 829 | if (inode_is_unlinkable(inode)) { |
5098c27b | 830 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, inode, |
ccd979bd MF |
831 | orphan_name, |
832 | &orphan_entry_bh); | |
833 | if (status < 0) { | |
834 | mlog_errno(status); | |
835 | goto leave; | |
836 | } | |
837 | } | |
838 | ||
65eff9cc | 839 | handle = ocfs2_start_trans(osb, OCFS2_UNLINK_CREDITS); |
ccd979bd MF |
840 | if (IS_ERR(handle)) { |
841 | status = PTR_ERR(handle); | |
842 | handle = NULL; | |
843 | mlog_errno(status); | |
844 | goto leave; | |
845 | } | |
846 | ||
847 | status = ocfs2_journal_access(handle, inode, fe_bh, | |
848 | OCFS2_JOURNAL_ACCESS_WRITE); | |
849 | if (status < 0) { | |
850 | mlog_errno(status); | |
851 | goto leave; | |
852 | } | |
853 | ||
854 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
855 | ||
17ff7856 | 856 | if (inode_is_unlinkable(inode)) { |
ccd979bd | 857 | status = ocfs2_orphan_add(osb, handle, inode, fe, orphan_name, |
5098c27b | 858 | orphan_entry_bh, orphan_dir); |
ccd979bd MF |
859 | if (status < 0) { |
860 | mlog_errno(status); | |
861 | goto leave; | |
862 | } | |
863 | } | |
864 | ||
865 | /* delete the name from the parent dir */ | |
866 | status = ocfs2_delete_entry(handle, dir, dirent, dirent_bh); | |
867 | if (status < 0) { | |
868 | mlog_errno(status); | |
869 | goto leave; | |
870 | } | |
871 | ||
17ff7856 MF |
872 | if (S_ISDIR(inode->i_mode)) |
873 | drop_nlink(inode); | |
874 | drop_nlink(inode); | |
ccd979bd | 875 | fe->i_links_count = cpu_to_le16(inode->i_nlink); |
ccd979bd MF |
876 | |
877 | status = ocfs2_journal_dirty(handle, fe_bh); | |
878 | if (status < 0) { | |
879 | mlog_errno(status); | |
880 | goto leave; | |
881 | } | |
882 | ||
592282cf MF |
883 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; |
884 | if (S_ISDIR(inode->i_mode)) | |
17ff7856 | 885 | drop_nlink(dir); |
592282cf MF |
886 | |
887 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
888 | if (status < 0) { | |
889 | mlog_errno(status); | |
890 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 891 | inc_nlink(dir); |
ccd979bd MF |
892 | } |
893 | ||
894 | leave: | |
ccd979bd | 895 | if (handle) |
02dc1af4 | 896 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 897 | |
30a4f5e8 | 898 | if (child_locked) |
e63aecb6 | 899 | ocfs2_inode_unlock(inode, 1); |
30a4f5e8 | 900 | |
e63aecb6 | 901 | ocfs2_inode_unlock(dir, 1); |
30a4f5e8 | 902 | |
5098c27b MF |
903 | if (orphan_dir) { |
904 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 905 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
906 | mutex_unlock(&orphan_dir->i_mutex); |
907 | iput(orphan_dir); | |
908 | } | |
909 | ||
a81cb88b MF |
910 | brelse(fe_bh); |
911 | brelse(dirent_bh); | |
912 | brelse(parent_node_bh); | |
913 | brelse(orphan_entry_bh); | |
ccd979bd MF |
914 | |
915 | mlog_exit(status); | |
916 | ||
917 | return status; | |
918 | } | |
919 | ||
920 | /* | |
921 | * The only place this should be used is rename! | |
922 | * if they have the same id, then the 1st one is the only one locked. | |
923 | */ | |
924 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
925 | struct buffer_head **bh1, |
926 | struct inode *inode1, | |
927 | struct buffer_head **bh2, | |
928 | struct inode *inode2) | |
929 | { | |
930 | int status; | |
931 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); | |
932 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
933 | struct buffer_head **tmpbh; | |
934 | struct inode *tmpinode; | |
935 | ||
b0697053 MF |
936 | mlog_entry("(inode1 = %llu, inode2 = %llu)\n", |
937 | (unsigned long long)oi1->ip_blkno, | |
938 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 939 | |
ccd979bd MF |
940 | if (*bh1) |
941 | *bh1 = NULL; | |
942 | if (*bh2) | |
943 | *bh2 = NULL; | |
944 | ||
945 | /* we always want to lock the one with the lower lockid first. */ | |
946 | if (oi1->ip_blkno != oi2->ip_blkno) { | |
947 | if (oi1->ip_blkno < oi2->ip_blkno) { | |
948 | /* switch id1 and id2 around */ | |
949 | mlog(0, "switching them around...\n"); | |
950 | tmpbh = bh2; | |
951 | bh2 = bh1; | |
952 | bh1 = tmpbh; | |
953 | ||
954 | tmpinode = inode2; | |
955 | inode2 = inode1; | |
956 | inode1 = tmpinode; | |
957 | } | |
958 | /* lock id2 */ | |
e63aecb6 | 959 | status = ocfs2_inode_lock(inode2, bh2, 1); |
ccd979bd MF |
960 | if (status < 0) { |
961 | if (status != -ENOENT) | |
962 | mlog_errno(status); | |
963 | goto bail; | |
964 | } | |
965 | } | |
8d5596c6 | 966 | |
ccd979bd | 967 | /* lock id1 */ |
e63aecb6 | 968 | status = ocfs2_inode_lock(inode1, bh1, 1); |
ccd979bd | 969 | if (status < 0) { |
8d5596c6 MF |
970 | /* |
971 | * An error return must mean that no cluster locks | |
972 | * were held on function exit. | |
973 | */ | |
974 | if (oi1->ip_blkno != oi2->ip_blkno) | |
e63aecb6 | 975 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 | 976 | |
ccd979bd MF |
977 | if (status != -ENOENT) |
978 | mlog_errno(status); | |
ccd979bd | 979 | } |
8d5596c6 | 980 | |
ccd979bd MF |
981 | bail: |
982 | mlog_exit(status); | |
983 | return status; | |
984 | } | |
985 | ||
8d5596c6 MF |
986 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
987 | { | |
e63aecb6 | 988 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
989 | |
990 | if (inode1 != inode2) | |
e63aecb6 | 991 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
992 | } |
993 | ||
ccd979bd MF |
994 | static int ocfs2_rename(struct inode *old_dir, |
995 | struct dentry *old_dentry, | |
996 | struct inode *new_dir, | |
997 | struct dentry *new_dentry) | |
998 | { | |
8d5596c6 MF |
999 | int status = 0, rename_lock = 0, parents_locked = 0; |
1000 | int old_child_locked = 0, new_child_locked = 0; | |
ccd979bd MF |
1001 | struct inode *old_inode = old_dentry->d_inode; |
1002 | struct inode *new_inode = new_dentry->d_inode; | |
5098c27b | 1003 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1004 | struct ocfs2_dinode *newfe = NULL; |
1005 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
1006 | struct buffer_head *orphan_entry_bh = NULL; | |
1007 | struct buffer_head *newfe_bh = NULL; | |
592282cf | 1008 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd MF |
1009 | struct buffer_head *insert_entry_bh = NULL; |
1010 | struct ocfs2_super *osb = NULL; | |
5b6a3a2b | 1011 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1012 | handle_t *handle = NULL; |
ccd979bd MF |
1013 | struct buffer_head *old_dir_bh = NULL; |
1014 | struct buffer_head *new_dir_bh = NULL; | |
38760e24 MF |
1015 | struct ocfs2_dir_entry *old_inode_dot_dot_de = NULL, *old_de = NULL, |
1016 | *new_de = NULL; | |
ccd979bd MF |
1017 | struct buffer_head *new_de_bh = NULL, *old_de_bh = NULL; // bhs for above |
1018 | struct buffer_head *old_inode_de_bh = NULL; // if old_dentry is a dir, | |
1019 | // this is the 1st dirent bh | |
592282cf | 1020 | nlink_t old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1021 | struct ocfs2_dinode *old_di; |
ccd979bd MF |
1022 | |
1023 | /* At some point it might be nice to break this function up a | |
1024 | * bit. */ | |
1025 | ||
1026 | mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p, from='%.*s' to='%.*s')\n", | |
1027 | old_dir, old_dentry, new_dir, new_dentry, | |
1028 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1029 | new_dentry->d_name.len, new_dentry->d_name.name); | |
1030 | ||
1031 | osb = OCFS2_SB(old_dir->i_sb); | |
1032 | ||
1033 | if (new_inode) { | |
1034 | if (!igrab(new_inode)) | |
1035 | BUG(); | |
1036 | } | |
1037 | ||
1b3c3714 | 1038 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1039 | * a/b/c |
1040 | * a/d | |
1041 | * a,b,c, and d are all directories. | |
1042 | * | |
1043 | * from cwd of 'a' on both nodes: | |
1044 | * node1: mv b/c d | |
1045 | * node2: mv d b/c | |
1046 | * | |
1047 | * And that's why, just like the VFS, we need a file system | |
1048 | * rename lock. */ | |
5dabd695 | 1049 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1050 | status = ocfs2_rename_lock(osb); |
1051 | if (status < 0) { | |
1052 | mlog_errno(status); | |
1053 | goto bail; | |
1054 | } | |
1055 | rename_lock = 1; | |
1056 | } | |
1057 | ||
ccd979bd | 1058 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 MF |
1059 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
1060 | &new_dir_bh, new_dir); | |
ccd979bd MF |
1061 | if (status < 0) { |
1062 | mlog_errno(status); | |
1063 | goto bail; | |
1064 | } | |
8d5596c6 | 1065 | parents_locked = 1; |
ccd979bd MF |
1066 | |
1067 | /* make sure both dirs have bhs | |
1068 | * get an extra ref on old_dir_bh if old==new */ | |
1069 | if (!new_dir_bh) { | |
1070 | if (old_dir_bh) { | |
1071 | new_dir_bh = old_dir_bh; | |
1072 | get_bh(new_dir_bh); | |
1073 | } else { | |
1074 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1075 | status = -EIO; | |
1076 | goto bail; | |
1077 | } | |
1078 | } | |
1079 | ||
379dfe9d | 1080 | /* |
592282cf | 1081 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1082 | * also ensures that the downconvert thread on other nodes |
1083 | * won't have to concurrently downconvert the inode and the | |
1084 | * dentry locks. | |
379dfe9d | 1085 | */ |
e63aecb6 | 1086 | status = ocfs2_inode_lock(old_inode, &old_inode_bh, 1); |
379dfe9d MF |
1087 | if (status < 0) { |
1088 | if (status != -ENOENT) | |
ccd979bd | 1089 | mlog_errno(status); |
379dfe9d MF |
1090 | goto bail; |
1091 | } | |
8d5596c6 | 1092 | old_child_locked = 1; |
ccd979bd | 1093 | |
379dfe9d MF |
1094 | status = ocfs2_remote_dentry_delete(old_dentry); |
1095 | if (status < 0) { | |
1096 | mlog_errno(status); | |
1097 | goto bail; | |
1098 | } | |
1099 | ||
1100 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1101 | u64 old_inode_parent; |
1102 | ||
1103 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, | |
1104 | old_inode, &old_inode_de_bh, | |
1105 | &old_inode_dot_dot_de); | |
1106 | if (status) { | |
1107 | status = -EIO; | |
ccd979bd | 1108 | goto bail; |
38760e24 | 1109 | } |
ccd979bd | 1110 | |
38760e24 MF |
1111 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1112 | status = -EIO; | |
ccd979bd | 1113 | goto bail; |
38760e24 MF |
1114 | } |
1115 | ||
1116 | if (!new_inode && new_dir != old_dir && | |
1117 | new_dir->i_nlink >= OCFS2_LINK_MAX) { | |
1118 | status = -EMLINK; | |
ccd979bd | 1119 | goto bail; |
38760e24 | 1120 | } |
ccd979bd MF |
1121 | } |
1122 | ||
5b6a3a2b MF |
1123 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1124 | old_dentry->d_name.len, | |
1125 | &old_de_ino); | |
1126 | if (status) { | |
1127 | status = -ENOENT; | |
ccd979bd | 1128 | goto bail; |
5b6a3a2b | 1129 | } |
ccd979bd MF |
1130 | |
1131 | /* | |
1132 | * Check for inode number is _not_ due to possible IO errors. | |
1133 | * We might rmdir the source, keep it as pwd of some process | |
1134 | * and merrily kill the link to whatever was created under the | |
1135 | * same name. Goodbye sticky bit ;-< | |
1136 | */ | |
5b6a3a2b MF |
1137 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1138 | status = -ENOENT; | |
ccd979bd | 1139 | goto bail; |
5b6a3a2b | 1140 | } |
ccd979bd MF |
1141 | |
1142 | /* check if the target already exists (in which case we need | |
1143 | * to delete it */ | |
1144 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1145 | new_dentry->d_name.len, | |
1146 | &newfe_blkno, new_dir, &new_de_bh, | |
1147 | &new_de); | |
1148 | /* The only error we allow here is -ENOENT because the new | |
1149 | * file not existing is perfectly valid. */ | |
1150 | if ((status < 0) && (status != -ENOENT)) { | |
1151 | /* If we cannot find the file specified we should just */ | |
1152 | /* return the error... */ | |
1153 | mlog_errno(status); | |
1154 | goto bail; | |
1155 | } | |
1156 | ||
e325a88f SE |
1157 | if (!new_de && new_inode) { |
1158 | /* | |
1159 | * Target was unlinked by another node while we were | |
1160 | * waiting to get to ocfs2_rename(). There isn't | |
1161 | * anything we can do here to help the situation, so | |
1162 | * bubble up the appropriate error. | |
1163 | */ | |
1164 | status = -ENOENT; | |
1165 | goto bail; | |
1166 | } | |
ccd979bd MF |
1167 | |
1168 | /* In case we need to overwrite an existing file, we blow it | |
1169 | * away first */ | |
1170 | if (new_de) { | |
1171 | /* VFS didn't think there existed an inode here, but | |
1172 | * someone else in the cluster must have raced our | |
1173 | * rename to create one. Today we error cleanly, in | |
1174 | * the future we should consider calling iget to build | |
1175 | * a new struct inode for this entry. */ | |
1176 | if (!new_inode) { | |
1177 | status = -EACCES; | |
1178 | ||
1179 | mlog(0, "We found an inode for name %.*s but VFS " | |
1180 | "didn't give us one.\n", new_dentry->d_name.len, | |
1181 | new_dentry->d_name.name); | |
1182 | goto bail; | |
1183 | } | |
1184 | ||
1185 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1186 | status = -EACCES; | |
1187 | ||
b0697053 MF |
1188 | mlog(0, "Inode %llu and dir %llu disagree. flags = %x\n", |
1189 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, | |
1190 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1191 | OCFS2_I(new_inode)->ip_flags); |
1192 | goto bail; | |
1193 | } | |
1194 | ||
e63aecb6 | 1195 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1196 | if (status < 0) { |
1197 | if (status != -ENOENT) | |
1198 | mlog_errno(status); | |
1199 | goto bail; | |
1200 | } | |
8d5596c6 | 1201 | new_child_locked = 1; |
ccd979bd | 1202 | |
379dfe9d | 1203 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1204 | if (status < 0) { |
1205 | mlog_errno(status); | |
1206 | goto bail; | |
1207 | } | |
1208 | ||
1209 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1210 | ||
b0697053 MF |
1211 | mlog(0, "aha rename over existing... new_de=%p new_blkno=%llu " |
1212 | "newfebh=%p bhblocknr=%llu\n", new_de, | |
1213 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? | |
ccd979bd MF |
1214 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1215 | ||
1216 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1217 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
ccd979bd MF |
1218 | new_inode, |
1219 | orphan_name, | |
1220 | &orphan_entry_bh); | |
1221 | if (status < 0) { | |
1222 | mlog_errno(status); | |
1223 | goto bail; | |
1224 | } | |
1225 | } | |
1226 | } else { | |
1227 | BUG_ON(new_dentry->d_parent->d_inode != new_dir); | |
1228 | ||
1229 | status = ocfs2_check_dir_for_entry(new_dir, | |
1230 | new_dentry->d_name.name, | |
1231 | new_dentry->d_name.len); | |
1232 | if (status) | |
1233 | goto bail; | |
1234 | ||
1235 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1236 | new_dentry->d_name.name, | |
1237 | new_dentry->d_name.len, | |
1238 | &insert_entry_bh); | |
1239 | if (status < 0) { | |
1240 | mlog_errno(status); | |
1241 | goto bail; | |
1242 | } | |
1243 | } | |
1244 | ||
65eff9cc | 1245 | handle = ocfs2_start_trans(osb, OCFS2_RENAME_CREDITS); |
ccd979bd MF |
1246 | if (IS_ERR(handle)) { |
1247 | status = PTR_ERR(handle); | |
1248 | handle = NULL; | |
1249 | mlog_errno(status); | |
1250 | goto bail; | |
1251 | } | |
1252 | ||
1253 | if (new_de) { | |
1254 | if (S_ISDIR(new_inode->i_mode)) { | |
1255 | if (!ocfs2_empty_dir(new_inode) || | |
1256 | new_inode->i_nlink != 2) { | |
1257 | status = -ENOTEMPTY; | |
1258 | goto bail; | |
1259 | } | |
1260 | } | |
1261 | status = ocfs2_journal_access(handle, new_inode, newfe_bh, | |
1262 | OCFS2_JOURNAL_ACCESS_WRITE); | |
1263 | if (status < 0) { | |
1264 | mlog_errno(status); | |
1265 | goto bail; | |
1266 | } | |
1267 | ||
1268 | if (S_ISDIR(new_inode->i_mode) || | |
1269 | (newfe->i_links_count == cpu_to_le16(1))){ | |
1270 | status = ocfs2_orphan_add(osb, handle, new_inode, | |
1271 | newfe, orphan_name, | |
5098c27b | 1272 | orphan_entry_bh, orphan_dir); |
ccd979bd MF |
1273 | if (status < 0) { |
1274 | mlog_errno(status); | |
1275 | goto bail; | |
1276 | } | |
1277 | } | |
1278 | ||
1279 | /* change the dirent to point to the correct inode */ | |
38760e24 MF |
1280 | status = ocfs2_update_entry(new_dir, handle, new_de_bh, |
1281 | new_de, old_inode); | |
ccd979bd MF |
1282 | if (status < 0) { |
1283 | mlog_errno(status); | |
1284 | goto bail; | |
1285 | } | |
ccd979bd | 1286 | new_dir->i_version++; |
ccd979bd MF |
1287 | |
1288 | if (S_ISDIR(new_inode->i_mode)) | |
1289 | newfe->i_links_count = 0; | |
1290 | else | |
1291 | le16_add_cpu(&newfe->i_links_count, -1); | |
1292 | ||
1293 | status = ocfs2_journal_dirty(handle, newfe_bh); | |
1294 | if (status < 0) { | |
1295 | mlog_errno(status); | |
1296 | goto bail; | |
1297 | } | |
1298 | } else { | |
1299 | /* if the name was not found in new_dir, add it now */ | |
1300 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1301 | OCFS2_I(old_inode)->ip_blkno, | |
1302 | new_dir_bh, insert_entry_bh); | |
1303 | } | |
1304 | ||
1305 | old_inode->i_ctime = CURRENT_TIME; | |
1306 | mark_inode_dirty(old_inode); | |
480214d7 SM |
1307 | |
1308 | status = ocfs2_journal_access(handle, old_inode, old_inode_bh, | |
1309 | OCFS2_JOURNAL_ACCESS_WRITE); | |
1310 | if (status >= 0) { | |
1311 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1312 | ||
1313 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); | |
1314 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); | |
1315 | ||
1316 | status = ocfs2_journal_dirty(handle, old_inode_bh); | |
1317 | if (status < 0) | |
1318 | mlog_errno(status); | |
1319 | } else | |
1320 | mlog_errno(status); | |
ccd979bd | 1321 | |
5b6a3a2b MF |
1322 | /* |
1323 | * Now that the name has been added to new_dir, remove the old name. | |
1324 | * | |
1325 | * We don't keep any directory entry context around until now | |
1326 | * because the insert might have changed the type of directory | |
1327 | * we're dealing with. | |
1328 | */ | |
1329 | old_de_bh = ocfs2_find_entry(old_dentry->d_name.name, | |
1330 | old_dentry->d_name.len, | |
1331 | old_dir, &old_de); | |
1332 | if (!old_de_bh) { | |
1333 | status = -EIO; | |
1334 | goto bail; | |
1335 | } | |
1336 | ||
ccd979bd MF |
1337 | status = ocfs2_delete_entry(handle, old_dir, old_de, old_de_bh); |
1338 | if (status < 0) { | |
1339 | mlog_errno(status); | |
1340 | goto bail; | |
1341 | } | |
1342 | ||
1343 | if (new_inode) { | |
1344 | new_inode->i_nlink--; | |
1345 | new_inode->i_ctime = CURRENT_TIME; | |
1346 | } | |
1347 | old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME; | |
1348 | if (old_inode_de_bh) { | |
38760e24 MF |
1349 | status = ocfs2_update_entry(old_inode, handle, old_inode_de_bh, |
1350 | old_inode_dot_dot_de, new_dir); | |
ccd979bd MF |
1351 | old_dir->i_nlink--; |
1352 | if (new_inode) { | |
1353 | new_inode->i_nlink--; | |
1354 | } else { | |
d8c76e6f | 1355 | inc_nlink(new_dir); |
ccd979bd MF |
1356 | mark_inode_dirty(new_dir); |
1357 | } | |
1358 | } | |
1359 | mark_inode_dirty(old_dir); | |
592282cf MF |
1360 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1361 | if (new_inode) { | |
ccd979bd | 1362 | mark_inode_dirty(new_inode); |
592282cf MF |
1363 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1364 | } | |
ccd979bd | 1365 | |
592282cf MF |
1366 | if (old_dir != new_dir) { |
1367 | /* Keep the same times on both directories.*/ | |
1368 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; | |
1369 | ||
1370 | /* | |
1371 | * This will also pick up the i_nlink change from the | |
1372 | * block above. | |
1373 | */ | |
1374 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1375 | } | |
ccd979bd MF |
1376 | |
1377 | if (old_dir_nlink != old_dir->i_nlink) { | |
1378 | if (!old_dir_bh) { | |
1379 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1380 | "%llu from %d to %d but bh is NULL!\n", |
1381 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1382 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1383 | } else { |
1384 | struct ocfs2_dinode *fe; | |
1385 | status = ocfs2_journal_access(handle, old_dir, | |
1386 | old_dir_bh, | |
1387 | OCFS2_JOURNAL_ACCESS_WRITE); | |
1388 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; | |
1389 | fe->i_links_count = cpu_to_le16(old_dir->i_nlink); | |
1390 | status = ocfs2_journal_dirty(handle, old_dir_bh); | |
1391 | } | |
1392 | } | |
1393 | ||
379dfe9d | 1394 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1395 | status = 0; |
1396 | bail: | |
1397 | if (rename_lock) | |
1398 | ocfs2_rename_unlock(osb); | |
1399 | ||
1400 | if (handle) | |
02dc1af4 | 1401 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1402 | |
8d5596c6 MF |
1403 | if (parents_locked) |
1404 | ocfs2_double_unlock(old_dir, new_dir); | |
1405 | ||
1406 | if (old_child_locked) | |
e63aecb6 | 1407 | ocfs2_inode_unlock(old_inode, 1); |
8d5596c6 MF |
1408 | |
1409 | if (new_child_locked) | |
e63aecb6 | 1410 | ocfs2_inode_unlock(new_inode, 1); |
8d5596c6 | 1411 | |
5098c27b MF |
1412 | if (orphan_dir) { |
1413 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1414 | ocfs2_inode_unlock(orphan_dir, 1); |
5098c27b MF |
1415 | mutex_unlock(&orphan_dir->i_mutex); |
1416 | iput(orphan_dir); | |
1417 | } | |
1418 | ||
ccd979bd MF |
1419 | if (new_inode) |
1420 | sync_mapping_buffers(old_inode->i_mapping); | |
1421 | ||
1422 | if (new_inode) | |
1423 | iput(new_inode); | |
a81cb88b MF |
1424 | brelse(newfe_bh); |
1425 | brelse(old_inode_bh); | |
1426 | brelse(old_dir_bh); | |
1427 | brelse(new_dir_bh); | |
1428 | brelse(new_de_bh); | |
1429 | brelse(old_de_bh); | |
1430 | brelse(old_inode_de_bh); | |
1431 | brelse(orphan_entry_bh); | |
1432 | brelse(insert_entry_bh); | |
ccd979bd MF |
1433 | |
1434 | mlog_exit(status); | |
1435 | ||
1436 | return status; | |
1437 | } | |
1438 | ||
1439 | /* | |
1440 | * we expect i_size = strlen(symname). Copy symname into the file | |
1441 | * data, including the null terminator. | |
1442 | */ | |
1443 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1444 | handle_t *handle, |
ccd979bd MF |
1445 | struct inode *inode, |
1446 | const char *symname) | |
1447 | { | |
1448 | struct buffer_head **bhs = NULL; | |
1449 | const char *c; | |
1450 | struct super_block *sb = osb->sb; | |
4f902c37 | 1451 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1452 | int virtual, blocks, status, i, bytes_left; |
1453 | ||
1454 | bytes_left = i_size_read(inode) + 1; | |
1455 | /* we can't trust i_blocks because we're actually going to | |
1456 | * write i_size + 1 bytes. */ | |
1457 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1458 | ||
5515eff8 AM |
1459 | mlog_entry("i_blocks = %llu, i_size = %llu, blocks = %d\n", |
1460 | (unsigned long long)inode->i_blocks, | |
1461 | i_size_read(inode), blocks); | |
ccd979bd MF |
1462 | |
1463 | /* Sanity check -- make sure we're going to fit. */ | |
1464 | if (bytes_left > | |
1465 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1466 | status = -EIO; | |
1467 | mlog_errno(status); | |
1468 | goto bail; | |
1469 | } | |
1470 | ||
1471 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1472 | if (!bhs) { | |
1473 | status = -ENOMEM; | |
1474 | mlog_errno(status); | |
1475 | goto bail; | |
1476 | } | |
1477 | ||
49cb8d2d MF |
1478 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1479 | NULL); | |
ccd979bd MF |
1480 | if (status < 0) { |
1481 | mlog_errno(status); | |
1482 | goto bail; | |
1483 | } | |
1484 | ||
1485 | /* links can never be larger than one cluster so we know this | |
1486 | * is all going to be contiguous, but do a sanity check | |
1487 | * anyway. */ | |
1488 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1489 | status = -EIO; | |
1490 | mlog_errno(status); | |
1491 | goto bail; | |
1492 | } | |
1493 | ||
1494 | virtual = 0; | |
1495 | while(bytes_left > 0) { | |
1496 | c = &symname[virtual * sb->s_blocksize]; | |
1497 | ||
1498 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1499 | if (!bhs[virtual]) { | |
1500 | status = -ENOMEM; | |
1501 | mlog_errno(status); | |
1502 | goto bail; | |
1503 | } | |
1504 | ocfs2_set_new_buffer_uptodate(inode, bhs[virtual]); | |
1505 | ||
1506 | status = ocfs2_journal_access(handle, inode, bhs[virtual], | |
1507 | OCFS2_JOURNAL_ACCESS_CREATE); | |
1508 | if (status < 0) { | |
1509 | mlog_errno(status); | |
1510 | goto bail; | |
1511 | } | |
1512 | ||
1513 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1514 | ||
1515 | memcpy(bhs[virtual]->b_data, c, | |
1516 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1517 | bytes_left); | |
1518 | ||
1519 | status = ocfs2_journal_dirty(handle, bhs[virtual]); | |
1520 | if (status < 0) { | |
1521 | mlog_errno(status); | |
1522 | goto bail; | |
1523 | } | |
1524 | ||
1525 | virtual++; | |
1526 | p_blkno++; | |
1527 | bytes_left -= sb->s_blocksize; | |
1528 | } | |
1529 | ||
1530 | status = 0; | |
1531 | bail: | |
1532 | ||
1533 | if (bhs) { | |
1534 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1535 | brelse(bhs[i]); |
ccd979bd MF |
1536 | kfree(bhs); |
1537 | } | |
1538 | ||
1539 | mlog_exit(status); | |
1540 | return status; | |
1541 | } | |
1542 | ||
1543 | static int ocfs2_symlink(struct inode *dir, | |
1544 | struct dentry *dentry, | |
1545 | const char *symname) | |
1546 | { | |
1547 | int status, l, credits; | |
1548 | u64 newsize; | |
1549 | struct ocfs2_super *osb = NULL; | |
1550 | struct inode *inode = NULL; | |
1551 | struct super_block *sb; | |
1552 | struct buffer_head *new_fe_bh = NULL; | |
1553 | struct buffer_head *de_bh = NULL; | |
1554 | struct buffer_head *parent_fe_bh = NULL; | |
1555 | struct ocfs2_dinode *fe = NULL; | |
1556 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1557 | handle_t *handle = NULL; |
ccd979bd MF |
1558 | struct ocfs2_alloc_context *inode_ac = NULL; |
1559 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1560 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1561 | int want_clusters = 0; | |
1562 | int xattr_credits = 0; | |
1563 | struct ocfs2_security_xattr_info si = { | |
1564 | .enable = 1, | |
1565 | }; | |
ccd979bd MF |
1566 | |
1567 | mlog_entry("(0x%p, 0x%p, symname='%s' actual='%.*s')\n", dir, | |
1568 | dentry, symname, dentry->d_name.len, dentry->d_name.name); | |
1569 | ||
1570 | sb = dir->i_sb; | |
1571 | osb = OCFS2_SB(sb); | |
1572 | ||
1573 | l = strlen(symname) + 1; | |
1574 | ||
1575 | credits = ocfs2_calc_symlink_credits(sb); | |
1576 | ||
ccd979bd | 1577 | /* lock the parent directory */ |
e63aecb6 | 1578 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1579 | if (status < 0) { |
1580 | if (status != -ENOENT) | |
1581 | mlog_errno(status); | |
6d8fc40e | 1582 | return status; |
ccd979bd MF |
1583 | } |
1584 | ||
1585 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
1586 | if (!dirfe->i_links_count) { | |
1587 | /* can't make a file in a deleted directory. */ | |
1588 | status = -ENOENT; | |
1589 | goto bail; | |
1590 | } | |
1591 | ||
1592 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1593 | dentry->d_name.len); | |
1594 | if (status) | |
1595 | goto bail; | |
1596 | ||
1597 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1598 | dentry->d_name.name, | |
1599 | dentry->d_name.len, &de_bh); | |
1600 | if (status < 0) { | |
1601 | mlog_errno(status); | |
1602 | goto bail; | |
1603 | } | |
1604 | ||
da5cbf2f | 1605 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1606 | if (status < 0) { |
1607 | if (status != -ENOSPC) | |
1608 | mlog_errno(status); | |
1609 | goto bail; | |
1610 | } | |
1611 | ||
f5d36202 TY |
1612 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
1613 | if (!inode) { | |
1614 | status = -ENOMEM; | |
1615 | mlog_errno(status); | |
1616 | goto bail; | |
1617 | } | |
1618 | ||
534eaddd TY |
1619 | /* get security xattr */ |
1620 | status = ocfs2_init_security_get(inode, dir, &si); | |
1621 | if (status) { | |
1622 | if (status == -EOPNOTSUPP) | |
1623 | si.enable = 0; | |
1624 | else { | |
1625 | mlog_errno(status); | |
1626 | goto bail; | |
1627 | } | |
1628 | } | |
1629 | ||
1630 | /* calculate meta data/clusters for setting security xattr */ | |
1631 | if (si.enable) { | |
1632 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1633 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1634 | if (status < 0) { |
534eaddd | 1635 | mlog_errno(status); |
ccd979bd MF |
1636 | goto bail; |
1637 | } | |
1638 | } | |
1639 | ||
534eaddd TY |
1640 | /* don't reserve bitmap space for fast symlinks. */ |
1641 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1642 | want_clusters += 1; | |
1643 | ||
1644 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1645 | if (status < 0) { | |
1646 | if (status != -ENOSPC) | |
1647 | mlog_errno(status); | |
1648 | goto bail; | |
1649 | } | |
1650 | ||
1651 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1652 | if (IS_ERR(handle)) { |
1653 | status = PTR_ERR(handle); | |
1654 | handle = NULL; | |
1655 | mlog_errno(status); | |
1656 | goto bail; | |
1657 | } | |
1658 | ||
f5d36202 TY |
1659 | status = ocfs2_mknod_locked(osb, dir, inode, dentry, |
1660 | 0, &new_fe_bh, parent_fe_bh, handle, | |
1661 | inode_ac); | |
ccd979bd MF |
1662 | if (status < 0) { |
1663 | mlog_errno(status); | |
1664 | goto bail; | |
1665 | } | |
1666 | ||
1667 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1668 | inode->i_rdev = 0; | |
1669 | newsize = l - 1; | |
1670 | if (l > ocfs2_fast_symlink_chars(sb)) { | |
dcd0538f MF |
1671 | u32 offset = 0; |
1672 | ||
ccd979bd | 1673 | inode->i_op = &ocfs2_symlink_inode_operations; |
0eb8d47e TM |
1674 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1675 | new_fe_bh, | |
1676 | handle, data_ac, NULL, | |
1677 | NULL); | |
ccd979bd MF |
1678 | if (status < 0) { |
1679 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1680 | mlog(ML_ERROR, |
1681 | "Failed to extend file to %llu\n", | |
1682 | (unsigned long long)newsize); | |
ccd979bd MF |
1683 | mlog_errno(status); |
1684 | status = -ENOSPC; | |
1685 | } | |
1686 | goto bail; | |
1687 | } | |
1688 | i_size_write(inode, newsize); | |
8110b073 | 1689 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd MF |
1690 | } else { |
1691 | inode->i_op = &ocfs2_fast_symlink_inode_operations; | |
1692 | memcpy((char *) fe->id2.i_symlink, symname, l); | |
1693 | i_size_write(inode, newsize); | |
1694 | inode->i_blocks = 0; | |
1695 | } | |
1696 | ||
1697 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1698 | if (status < 0) { | |
1699 | mlog_errno(status); | |
1700 | goto bail; | |
1701 | } | |
1702 | ||
1703 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
1704 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
1705 | symname); | |
1706 | if (status < 0) { | |
1707 | mlog_errno(status); | |
1708 | goto bail; | |
1709 | } | |
1710 | } | |
1711 | ||
534eaddd TY |
1712 | if (si.enable) { |
1713 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
1714 | xattr_ac, data_ac); | |
1715 | if (status < 0) { | |
1716 | mlog_errno(status); | |
1717 | goto bail; | |
1718 | } | |
1719 | } | |
1720 | ||
ccd979bd MF |
1721 | status = ocfs2_add_entry(handle, dentry, inode, |
1722 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
1723 | de_bh); | |
1724 | if (status < 0) { | |
1725 | mlog_errno(status); | |
1726 | goto bail; | |
1727 | } | |
1728 | ||
0027dd5b | 1729 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
1730 | if (status) { |
1731 | mlog_errno(status); | |
1732 | goto bail; | |
1733 | } | |
1734 | ||
ccd979bd MF |
1735 | insert_inode_hash(inode); |
1736 | dentry->d_op = &ocfs2_dentry_ops; | |
1737 | d_instantiate(dentry, inode); | |
1738 | bail: | |
1739 | if (handle) | |
02dc1af4 | 1740 | ocfs2_commit_trans(osb, handle); |
6d8fc40e | 1741 | |
e63aecb6 | 1742 | ocfs2_inode_unlock(dir, 1); |
6d8fc40e | 1743 | |
a81cb88b MF |
1744 | brelse(new_fe_bh); |
1745 | brelse(parent_fe_bh); | |
1746 | brelse(de_bh); | |
534eaddd TY |
1747 | kfree(si.name); |
1748 | kfree(si.value); | |
ccd979bd MF |
1749 | if (inode_ac) |
1750 | ocfs2_free_alloc_context(inode_ac); | |
1751 | if (data_ac) | |
1752 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
1753 | if (xattr_ac) |
1754 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 TY |
1755 | if ((status < 0) && inode) { |
1756 | clear_nlink(inode); | |
ccd979bd | 1757 | iput(inode); |
f5d36202 | 1758 | } |
ccd979bd MF |
1759 | |
1760 | mlog_exit(status); | |
1761 | ||
1762 | return status; | |
1763 | } | |
1764 | ||
ccd979bd MF |
1765 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
1766 | { | |
1767 | int status, namelen; | |
1768 | ||
1769 | mlog_entry_void(); | |
1770 | ||
b0697053 MF |
1771 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
1772 | (long long)blkno); | |
ccd979bd MF |
1773 | if (namelen <= 0) { |
1774 | if (namelen) | |
1775 | status = namelen; | |
1776 | else | |
1777 | status = -EINVAL; | |
1778 | mlog_errno(status); | |
1779 | goto bail; | |
1780 | } | |
1781 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
1782 | status = -EINVAL; | |
1783 | mlog_errno(status); | |
1784 | goto bail; | |
1785 | } | |
1786 | ||
1787 | mlog(0, "built filename '%s' for orphan dir (len=%d)\n", name, | |
1788 | namelen); | |
1789 | ||
1790 | status = 0; | |
1791 | bail: | |
1792 | mlog_exit(status); | |
1793 | return status; | |
1794 | } | |
1795 | ||
1796 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
5098c27b | 1797 | struct inode **ret_orphan_dir, |
ccd979bd MF |
1798 | struct inode *inode, |
1799 | char *name, | |
1800 | struct buffer_head **de_bh) | |
1801 | { | |
5098c27b | 1802 | struct inode *orphan_dir_inode; |
ccd979bd MF |
1803 | struct buffer_head *orphan_dir_bh = NULL; |
1804 | int status = 0; | |
1805 | ||
1806 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
1807 | if (status < 0) { | |
1808 | mlog_errno(status); | |
5098c27b | 1809 | return status; |
ccd979bd MF |
1810 | } |
1811 | ||
1812 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
1813 | ORPHAN_DIR_SYSTEM_INODE, | |
1814 | osb->slot_num); | |
1815 | if (!orphan_dir_inode) { | |
1816 | status = -ENOENT; | |
1817 | mlog_errno(status); | |
5098c27b | 1818 | return status; |
ccd979bd MF |
1819 | } |
1820 | ||
5098c27b MF |
1821 | mutex_lock(&orphan_dir_inode->i_mutex); |
1822 | ||
e63aecb6 | 1823 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
ccd979bd MF |
1824 | if (status < 0) { |
1825 | mlog_errno(status); | |
1826 | goto leave; | |
1827 | } | |
1828 | ||
1829 | status = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
1830 | orphan_dir_bh, name, | |
1831 | OCFS2_ORPHAN_NAMELEN, de_bh); | |
1832 | if (status < 0) { | |
e63aecb6 | 1833 | ocfs2_inode_unlock(orphan_dir_inode, 1); |
5098c27b | 1834 | |
ccd979bd MF |
1835 | mlog_errno(status); |
1836 | goto leave; | |
1837 | } | |
1838 | ||
5098c27b MF |
1839 | *ret_orphan_dir = orphan_dir_inode; |
1840 | ||
ccd979bd | 1841 | leave: |
5098c27b MF |
1842 | if (status) { |
1843 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
ccd979bd | 1844 | iput(orphan_dir_inode); |
5098c27b | 1845 | } |
ccd979bd | 1846 | |
a81cb88b | 1847 | brelse(orphan_dir_bh); |
ccd979bd MF |
1848 | |
1849 | mlog_exit(status); | |
1850 | return status; | |
1851 | } | |
1852 | ||
1853 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 1854 | handle_t *handle, |
ccd979bd MF |
1855 | struct inode *inode, |
1856 | struct ocfs2_dinode *fe, | |
1857 | char *name, | |
5098c27b MF |
1858 | struct buffer_head *de_bh, |
1859 | struct inode *orphan_dir_inode) | |
ccd979bd | 1860 | { |
ccd979bd MF |
1861 | struct buffer_head *orphan_dir_bh = NULL; |
1862 | int status = 0; | |
1863 | struct ocfs2_dinode *orphan_fe; | |
1864 | ||
1865 | mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino); | |
1866 | ||
31d33073 | 1867 | status = ocfs2_read_block(orphan_dir_inode, |
ccd979bd | 1868 | OCFS2_I(orphan_dir_inode)->ip_blkno, |
0fcaa56a | 1869 | &orphan_dir_bh); |
ccd979bd MF |
1870 | if (status < 0) { |
1871 | mlog_errno(status); | |
1872 | goto leave; | |
1873 | } | |
1874 | ||
1875 | status = ocfs2_journal_access(handle, orphan_dir_inode, orphan_dir_bh, | |
1876 | OCFS2_JOURNAL_ACCESS_WRITE); | |
1877 | if (status < 0) { | |
1878 | mlog_errno(status); | |
1879 | goto leave; | |
1880 | } | |
1881 | ||
1882 | /* we're a cluster, and nlink can change on disk from | |
1883 | * underneath us... */ | |
1884 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
1885 | if (S_ISDIR(inode->i_mode)) | |
1886 | le16_add_cpu(&orphan_fe->i_links_count, 1); | |
1887 | orphan_dir_inode->i_nlink = le16_to_cpu(orphan_fe->i_links_count); | |
1888 | ||
1889 | status = ocfs2_journal_dirty(handle, orphan_dir_bh); | |
1890 | if (status < 0) { | |
1891 | mlog_errno(status); | |
1892 | goto leave; | |
1893 | } | |
1894 | ||
1895 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
1896 | OCFS2_ORPHAN_NAMELEN, inode, | |
1897 | OCFS2_I(inode)->ip_blkno, | |
1898 | orphan_dir_bh, de_bh); | |
1899 | if (status < 0) { | |
1900 | mlog_errno(status); | |
1901 | goto leave; | |
1902 | } | |
1903 | ||
1904 | le32_add_cpu(&fe->i_flags, OCFS2_ORPHANED_FL); | |
1905 | ||
1906 | /* Record which orphan dir our inode now resides | |
1907 | * in. delete_inode will use this to determine which orphan | |
1908 | * dir to lock. */ | |
50008630 | 1909 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); |
ccd979bd | 1910 | |
b0697053 MF |
1911 | mlog(0, "Inode %llu orphaned in slot %d\n", |
1912 | (unsigned long long)OCFS2_I(inode)->ip_blkno, osb->slot_num); | |
ccd979bd MF |
1913 | |
1914 | leave: | |
a81cb88b | 1915 | brelse(orphan_dir_bh); |
ccd979bd MF |
1916 | |
1917 | mlog_exit(status); | |
1918 | return status; | |
1919 | } | |
1920 | ||
1921 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
1922 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 1923 | handle_t *handle, |
ccd979bd MF |
1924 | struct inode *orphan_dir_inode, |
1925 | struct inode *inode, | |
1926 | struct buffer_head *orphan_dir_bh) | |
1927 | { | |
1928 | char name[OCFS2_ORPHAN_NAMELEN + 1]; | |
1929 | struct ocfs2_dinode *orphan_fe; | |
1930 | int status = 0; | |
1931 | struct buffer_head *target_de_bh = NULL; | |
1932 | struct ocfs2_dir_entry *target_de = NULL; | |
1933 | ||
1934 | mlog_entry_void(); | |
1935 | ||
1936 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
1937 | if (status < 0) { | |
1938 | mlog_errno(status); | |
1939 | goto leave; | |
1940 | } | |
1941 | ||
b0697053 MF |
1942 | mlog(0, "removing '%s' from orphan dir %llu (namelen=%d)\n", |
1943 | name, (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
1944 | OCFS2_ORPHAN_NAMELEN); | |
ccd979bd MF |
1945 | |
1946 | /* find it's spot in the orphan directory */ | |
1947 | target_de_bh = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, | |
1948 | orphan_dir_inode, &target_de); | |
1949 | if (!target_de_bh) { | |
1950 | status = -ENOENT; | |
1951 | mlog_errno(status); | |
1952 | goto leave; | |
1953 | } | |
1954 | ||
1955 | /* remove it from the orphan directory */ | |
1956 | status = ocfs2_delete_entry(handle, orphan_dir_inode, target_de, | |
1957 | target_de_bh); | |
1958 | if (status < 0) { | |
1959 | mlog_errno(status); | |
1960 | goto leave; | |
1961 | } | |
1962 | ||
1963 | status = ocfs2_journal_access(handle,orphan_dir_inode, orphan_dir_bh, | |
1964 | OCFS2_JOURNAL_ACCESS_WRITE); | |
1965 | if (status < 0) { | |
1966 | mlog_errno(status); | |
1967 | goto leave; | |
1968 | } | |
1969 | ||
1970 | /* do the i_nlink dance! :) */ | |
1971 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
1972 | if (S_ISDIR(inode->i_mode)) | |
1973 | le16_add_cpu(&orphan_fe->i_links_count, -1); | |
1974 | orphan_dir_inode->i_nlink = le16_to_cpu(orphan_fe->i_links_count); | |
1975 | ||
1976 | status = ocfs2_journal_dirty(handle, orphan_dir_bh); | |
1977 | if (status < 0) { | |
1978 | mlog_errno(status); | |
1979 | goto leave; | |
1980 | } | |
1981 | ||
1982 | leave: | |
a81cb88b | 1983 | brelse(target_de_bh); |
ccd979bd MF |
1984 | |
1985 | mlog_exit(status); | |
1986 | return status; | |
1987 | } | |
1988 | ||
92e1d5be | 1989 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
1990 | .create = ocfs2_create, |
1991 | .lookup = ocfs2_lookup, | |
1992 | .link = ocfs2_link, | |
1993 | .unlink = ocfs2_unlink, | |
1994 | .rmdir = ocfs2_unlink, | |
1995 | .symlink = ocfs2_symlink, | |
1996 | .mkdir = ocfs2_mkdir, | |
1997 | .mknod = ocfs2_mknod, | |
1998 | .rename = ocfs2_rename, | |
1999 | .setattr = ocfs2_setattr, | |
2000 | .getattr = ocfs2_getattr, | |
d38eb8db | 2001 | .permission = ocfs2_permission, |
cf1d6c76 TY |
2002 | .setxattr = generic_setxattr, |
2003 | .getxattr = generic_getxattr, | |
2004 | .listxattr = ocfs2_listxattr, | |
2005 | .removexattr = generic_removexattr, | |
ccd979bd | 2006 | }; |