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328970de | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
ccd979bd MF |
2 | /* -*- mode: c; c-basic-offset: 8; -*- |
3 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
4 | * | |
5 | * namei.c | |
6 | * | |
7 | * Create and rename file, directory, symlinks | |
8 | * | |
9 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
10 | * | |
11 | * Portions of this code from linux/fs/ext3/dir.c | |
12 | * | |
13 | * Copyright (C) 1992, 1993, 1994, 1995 | |
14 | * Remy Card (card@masi.ibp.fr) | |
15 | * Laboratoire MASI - Institut Blaise pascal | |
16 | * Universite Pierre et Marie Curie (Paris VI) | |
17 | * | |
18 | * from | |
19 | * | |
20 | * linux/fs/minix/dir.c | |
21 | * | |
22 | * Copyright (C) 1991, 1992 Linux Torvalds | |
ccd979bd MF |
23 | */ |
24 | ||
25 | #include <linux/fs.h> | |
26 | #include <linux/types.h> | |
27 | #include <linux/slab.h> | |
28 | #include <linux/highmem.h> | |
a90714c1 | 29 | #include <linux/quotaops.h> |
cc56c33e | 30 | #include <linux/iversion.h> |
ccd979bd | 31 | |
ccd979bd MF |
32 | #include <cluster/masklog.h> |
33 | ||
34 | #include "ocfs2.h" | |
35 | ||
36 | #include "alloc.h" | |
37 | #include "dcache.h" | |
38 | #include "dir.h" | |
39 | #include "dlmglue.h" | |
40 | #include "extent_map.h" | |
41 | #include "file.h" | |
42 | #include "inode.h" | |
43 | #include "journal.h" | |
44 | #include "namei.h" | |
45 | #include "suballoc.h" | |
aa958874 | 46 | #include "super.h" |
ccd979bd MF |
47 | #include "symlink.h" |
48 | #include "sysfile.h" | |
49 | #include "uptodate.h" | |
cf1d6c76 | 50 | #include "xattr.h" |
89c38bd0 | 51 | #include "acl.h" |
8990e44a | 52 | #include "ocfs2_trace.h" |
ccd979bd MF |
53 | |
54 | #include "buffer_head_io.h" | |
55 | ||
ccd979bd MF |
56 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
57 | struct inode *dir, | |
f5d36202 | 58 | struct inode *inode, |
ccd979bd MF |
59 | dev_t dev, |
60 | struct buffer_head **new_fe_bh, | |
61 | struct buffer_head *parent_fe_bh, | |
1fabe148 | 62 | handle_t *handle, |
ccd979bd MF |
63 | struct ocfs2_alloc_context *inode_ac); |
64 | ||
ccd979bd | 65 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, |
5098c27b | 66 | struct inode **ret_orphan_dir, |
19bd341f | 67 | u64 blkno, |
ccd979bd | 68 | char *name, |
06ee5c75 JQ |
69 | struct ocfs2_dir_lookup_result *lookup, |
70 | bool dio); | |
ccd979bd MF |
71 | |
72 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 73 | handle_t *handle, |
ccd979bd | 74 | struct inode *inode, |
3939fda4 | 75 | struct buffer_head *fe_bh, |
ccd979bd | 76 | char *name, |
4a12ca3a | 77 | struct ocfs2_dir_lookup_result *lookup, |
06ee5c75 JQ |
78 | struct inode *orphan_dir_inode, |
79 | bool dio); | |
ccd979bd MF |
80 | |
81 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 82 | handle_t *handle, |
ccd979bd MF |
83 | struct inode *inode, |
84 | const char *symname); | |
85 | ||
53dc20b9 X |
86 | static int ocfs2_double_lock(struct ocfs2_super *osb, |
87 | struct buffer_head **bh1, | |
88 | struct inode *inode1, | |
89 | struct buffer_head **bh2, | |
90 | struct inode *inode2, | |
91 | int rename); | |
92 | ||
93 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2); | |
ccd979bd MF |
94 | /* An orphan dir name is an 8 byte value, printed as a hex string */ |
95 | #define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64))) | |
96 | ||
97 | static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry, | |
00cd8dd3 | 98 | unsigned int flags) |
ccd979bd MF |
99 | { |
100 | int status; | |
101 | u64 blkno; | |
ccd979bd MF |
102 | struct inode *inode = NULL; |
103 | struct dentry *ret; | |
ccd979bd MF |
104 | struct ocfs2_inode_info *oi; |
105 | ||
8990e44a TM |
106 | trace_ocfs2_lookup(dir, dentry, dentry->d_name.len, |
107 | dentry->d_name.name, | |
108 | (unsigned long long)OCFS2_I(dir)->ip_blkno, 0); | |
ccd979bd MF |
109 | |
110 | if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) { | |
111 | ret = ERR_PTR(-ENAMETOOLONG); | |
112 | goto bail; | |
113 | } | |
114 | ||
cb25797d | 115 | status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT); |
ccd979bd MF |
116 | if (status < 0) { |
117 | if (status != -ENOENT) | |
118 | mlog_errno(status); | |
119 | ret = ERR_PTR(status); | |
120 | goto bail; | |
121 | } | |
122 | ||
be94d117 MF |
123 | status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name, |
124 | dentry->d_name.len, &blkno); | |
ccd979bd MF |
125 | if (status < 0) |
126 | goto bail_add; | |
127 | ||
5fa0613e | 128 | inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0); |
ccd979bd | 129 | if (IS_ERR(inode)) { |
ccd979bd MF |
130 | ret = ERR_PTR(-EACCES); |
131 | goto bail_unlock; | |
132 | } | |
133 | ||
134 | oi = OCFS2_I(inode); | |
135 | /* Clear any orphaned state... If we were able to look up the | |
136 | * inode from a directory, it certainly can't be orphaned. We | |
137 | * might have the bad state from a node which intended to | |
138 | * orphan this inode but crashed before it could commit the | |
139 | * unlink. */ | |
140 | spin_lock(&oi->ip_lock); | |
141 | oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED; | |
ccd979bd MF |
142 | spin_unlock(&oi->ip_lock); |
143 | ||
144 | bail_add: | |
ccd979bd MF |
145 | ret = d_splice_alias(inode, dentry); |
146 | ||
379dfe9d MF |
147 | if (inode) { |
148 | /* | |
149 | * If d_splice_alias() finds a DCACHE_DISCONNECTED | |
150 | * dentry, it will d_move() it on top of ourse. The | |
151 | * return value will indicate this however, so in | |
152 | * those cases, we switch them around for the locking | |
153 | * code. | |
154 | * | |
155 | * NOTE: This dentry already has ->d_op set from | |
156 | * ocfs2_get_parent() and ocfs2_get_dentry() | |
157 | */ | |
d3556bab | 158 | if (!IS_ERR_OR_NULL(ret)) |
379dfe9d MF |
159 | dentry = ret; |
160 | ||
161 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
0027dd5b | 162 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
163 | if (status) { |
164 | mlog_errno(status); | |
165 | ret = ERR_PTR(status); | |
166 | goto bail_unlock; | |
167 | } | |
5e98d492 GR |
168 | } else |
169 | ocfs2_dentry_attach_gen(dentry); | |
379dfe9d | 170 | |
ccd979bd MF |
171 | bail_unlock: |
172 | /* Don't drop the cluster lock until *after* the d_add -- | |
173 | * unlink on another node will message us to remove that | |
174 | * dentry under this lock so otherwise we can race this with | |
34d024f8 | 175 | * the downconvert thread and have a stale dentry. */ |
e63aecb6 | 176 | ocfs2_inode_unlock(dir, 0); |
ccd979bd MF |
177 | |
178 | bail: | |
ccd979bd | 179 | |
8990e44a | 180 | trace_ocfs2_lookup_ret(ret); |
ccd979bd MF |
181 | |
182 | return ret; | |
183 | } | |
184 | ||
67697cbd | 185 | static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode) |
f5d36202 TY |
186 | { |
187 | struct inode *inode; | |
9c89fe0a | 188 | int status; |
f5d36202 TY |
189 | |
190 | inode = new_inode(dir->i_sb); | |
191 | if (!inode) { | |
192 | mlog(ML_ERROR, "new_inode failed!\n"); | |
9c89fe0a | 193 | return ERR_PTR(-ENOMEM); |
f5d36202 TY |
194 | } |
195 | ||
196 | /* populate as many fields early on as possible - many of | |
197 | * these are used by the support functions here and in | |
198 | * callers. */ | |
199 | if (S_ISDIR(mode)) | |
bfe86848 | 200 | set_nlink(inode, 2); |
75fe0a24 | 201 | inode_init_owner(inode, dir, mode); |
9c89fe0a JK |
202 | status = dquot_initialize(inode); |
203 | if (status) | |
204 | return ERR_PTR(status); | |
205 | ||
f5d36202 TY |
206 | return inode; |
207 | } | |
208 | ||
595297a8 | 209 | static void ocfs2_cleanup_add_entry_failure(struct ocfs2_super *osb, |
210 | struct dentry *dentry, struct inode *inode) | |
211 | { | |
212 | struct ocfs2_dentry_lock *dl = dentry->d_fsdata; | |
213 | ||
214 | ocfs2_simple_drop_lockres(osb, &dl->dl_lockres); | |
215 | ocfs2_lock_res_free(&dl->dl_lockres); | |
216 | BUG_ON(dl->dl_count != 1); | |
217 | spin_lock(&dentry_attach_lock); | |
218 | dentry->d_fsdata = NULL; | |
219 | spin_unlock(&dentry_attach_lock); | |
220 | kfree(dl); | |
221 | iput(inode); | |
222 | } | |
223 | ||
ccd979bd MF |
224 | static int ocfs2_mknod(struct inode *dir, |
225 | struct dentry *dentry, | |
1a67aafb | 226 | umode_t mode, |
ccd979bd MF |
227 | dev_t dev) |
228 | { | |
229 | int status = 0; | |
230 | struct buffer_head *parent_fe_bh = NULL; | |
1fabe148 | 231 | handle_t *handle = NULL; |
ccd979bd MF |
232 | struct ocfs2_super *osb; |
233 | struct ocfs2_dinode *dirfe; | |
234 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
235 | struct inode *inode = NULL; |
236 | struct ocfs2_alloc_context *inode_ac = NULL; | |
237 | struct ocfs2_alloc_context *data_ac = NULL; | |
9b7895ef | 238 | struct ocfs2_alloc_context *meta_ac = NULL; |
534eaddd | 239 | int want_clusters = 0; |
9b7895ef | 240 | int want_meta = 0; |
534eaddd TY |
241 | int xattr_credits = 0; |
242 | struct ocfs2_security_xattr_info si = { | |
243 | .enable = 1, | |
244 | }; | |
a90714c1 | 245 | int did_quota_inode = 0; |
4a12ca3a | 246 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
247 | sigset_t oldset; |
248 | int did_block_signals = 0; | |
595297a8 | 249 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 250 | |
8990e44a TM |
251 | trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
252 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
253 | (unsigned long)dev, mode); | |
ccd979bd | 254 | |
9c89fe0a JK |
255 | status = dquot_initialize(dir); |
256 | if (status) { | |
257 | mlog_errno(status); | |
258 | return status; | |
259 | } | |
907f4554 | 260 | |
ccd979bd MF |
261 | /* get our super block */ |
262 | osb = OCFS2_SB(dir->i_sb); | |
263 | ||
e63aecb6 | 264 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
e3a82138 MF |
265 | if (status < 0) { |
266 | if (status != -ENOENT) | |
267 | mlog_errno(status); | |
268 | return status; | |
269 | } | |
270 | ||
198a1ca3 | 271 | if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) { |
a663e305 MF |
272 | status = -EMLINK; |
273 | goto leave; | |
274 | } | |
275 | ||
ccd979bd | 276 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
198a1ca3 | 277 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
278 | /* can't make a file in a deleted directory. */ |
279 | status = -ENOENT; | |
280 | goto leave; | |
281 | } | |
282 | ||
283 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
284 | dentry->d_name.len); | |
285 | if (status) | |
286 | goto leave; | |
287 | ||
288 | /* get a spot inside the dir. */ | |
289 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
290 | dentry->d_name.name, | |
4a12ca3a | 291 | dentry->d_name.len, &lookup); |
ccd979bd MF |
292 | if (status < 0) { |
293 | mlog_errno(status); | |
294 | goto leave; | |
295 | } | |
296 | ||
297 | /* reserve an inode spot */ | |
da5cbf2f | 298 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
299 | if (status < 0) { |
300 | if (status != -ENOSPC) | |
301 | mlog_errno(status); | |
302 | goto leave; | |
303 | } | |
304 | ||
f5d36202 | 305 | inode = ocfs2_get_init_inode(dir, mode); |
9c89fe0a JK |
306 | if (IS_ERR(inode)) { |
307 | status = PTR_ERR(inode); | |
308 | inode = NULL; | |
f5d36202 TY |
309 | mlog_errno(status); |
310 | goto leave; | |
311 | } | |
312 | ||
534eaddd | 313 | /* get security xattr */ |
2a7dba39 | 314 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
315 | if (status) { |
316 | if (status == -EOPNOTSUPP) | |
317 | si.enable = 0; | |
318 | else { | |
319 | mlog_errno(status); | |
320 | goto leave; | |
321 | } | |
322 | } | |
323 | ||
89c38bd0 TY |
324 | /* calculate meta data/clusters for setting security and acl xattr */ |
325 | status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode, | |
9b7895ef MF |
326 | &si, &want_clusters, |
327 | &xattr_credits, &want_meta); | |
89c38bd0 TY |
328 | if (status < 0) { |
329 | mlog_errno(status); | |
330 | goto leave; | |
ccd979bd MF |
331 | } |
332 | ||
534eaddd | 333 | /* Reserve a cluster if creating an extent based directory. */ |
9b7895ef | 334 | if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) { |
534eaddd TY |
335 | want_clusters += 1; |
336 | ||
9b7895ef | 337 | /* Dir indexing requires extra space as well */ |
4ed8a6bb | 338 | if (ocfs2_supports_indexed_dirs(osb)) |
9b7895ef | 339 | want_meta++; |
9b7895ef MF |
340 | } |
341 | ||
342 | status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac); | |
343 | if (status < 0) { | |
344 | if (status != -ENOSPC) | |
345 | mlog_errno(status); | |
346 | goto leave; | |
347 | } | |
348 | ||
534eaddd TY |
349 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); |
350 | if (status < 0) { | |
351 | if (status != -ENOSPC) | |
352 | mlog_errno(status); | |
353 | goto leave; | |
354 | } | |
355 | ||
9b7895ef MF |
356 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, |
357 | S_ISDIR(mode), | |
358 | xattr_credits)); | |
ccd979bd MF |
359 | if (IS_ERR(handle)) { |
360 | status = PTR_ERR(handle); | |
361 | handle = NULL; | |
362 | mlog_errno(status); | |
363 | goto leave; | |
364 | } | |
365 | ||
547ba7c8 JB |
366 | /* Starting to change things, restart is no longer possible. */ |
367 | ocfs2_block_signals(&oldset); | |
368 | did_block_signals = 1; | |
369 | ||
63936dda CH |
370 | status = dquot_alloc_inode(inode); |
371 | if (status) | |
a90714c1 | 372 | goto leave; |
a90714c1 JK |
373 | did_quota_inode = 1; |
374 | ||
ccd979bd | 375 | /* do the real work now. */ |
19bd341f | 376 | status = ocfs2_mknod_locked(osb, dir, inode, dev, |
ccd979bd | 377 | &new_fe_bh, parent_fe_bh, handle, |
f5d36202 | 378 | inode_ac); |
ccd979bd MF |
379 | if (status < 0) { |
380 | mlog_errno(status); | |
381 | goto leave; | |
382 | } | |
383 | ||
384 | if (S_ISDIR(mode)) { | |
385 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, | |
9b7895ef | 386 | new_fe_bh, data_ac, meta_ac); |
ccd979bd MF |
387 | if (status < 0) { |
388 | mlog_errno(status); | |
389 | goto leave; | |
390 | } | |
391 | ||
0cf2f763 JB |
392 | status = ocfs2_journal_access_di(handle, INODE_CACHE(dir), |
393 | parent_fe_bh, | |
13723d00 | 394 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
395 | if (status < 0) { |
396 | mlog_errno(status); | |
397 | goto leave; | |
398 | } | |
198a1ca3 | 399 | ocfs2_add_links_count(dirfe, 1); |
ec20cec7 | 400 | ocfs2_journal_dirty(handle, parent_fe_bh); |
d8c76e6f | 401 | inc_nlink(dir); |
ccd979bd MF |
402 | } |
403 | ||
c25a1e06 JB |
404 | status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh, |
405 | meta_ac, data_ac); | |
702e5bc6 | 406 | |
89c38bd0 TY |
407 | if (status < 0) { |
408 | mlog_errno(status); | |
409 | goto leave; | |
410 | } | |
411 | ||
534eaddd TY |
412 | if (si.enable) { |
413 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
9b7895ef | 414 | meta_ac, data_ac); |
534eaddd TY |
415 | if (status < 0) { |
416 | mlog_errno(status); | |
417 | goto leave; | |
418 | } | |
419 | } | |
420 | ||
a9743fcd MF |
421 | /* |
422 | * Do this before adding the entry to the directory. We add | |
423 | * also set d_op after success so that ->d_iput() will cleanup | |
424 | * the dentry lock even if ocfs2_add_entry() fails below. | |
425 | */ | |
426 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
427 | OCFS2_I(dir)->ip_blkno); | |
428 | if (status) { | |
ccd979bd MF |
429 | mlog_errno(status); |
430 | goto leave; | |
431 | } | |
432 | ||
595297a8 | 433 | dl = dentry->d_fsdata; |
434 | ||
a9743fcd MF |
435 | status = ocfs2_add_entry(handle, dentry, inode, |
436 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
437 | &lookup); | |
438 | if (status < 0) { | |
379dfe9d MF |
439 | mlog_errno(status); |
440 | goto leave; | |
441 | } | |
442 | ||
ccd979bd | 443 | insert_inode_hash(inode); |
ccd979bd MF |
444 | d_instantiate(dentry, inode); |
445 | status = 0; | |
446 | leave: | |
a90714c1 | 447 | if (status < 0 && did_quota_inode) |
63936dda | 448 | dquot_free_inode(inode); |
ccd979bd | 449 | if (handle) |
02dc1af4 | 450 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 451 | |
e63aecb6 | 452 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
453 | if (did_block_signals) |
454 | ocfs2_unblock_signals(&oldset); | |
e3a82138 | 455 | |
a81cb88b | 456 | brelse(new_fe_bh); |
a81cb88b | 457 | brelse(parent_fe_bh); |
534eaddd | 458 | kfree(si.value); |
ccd979bd | 459 | |
4a12ca3a MF |
460 | ocfs2_free_dir_lookup_result(&lookup); |
461 | ||
ccd979bd MF |
462 | if (inode_ac) |
463 | ocfs2_free_alloc_context(inode_ac); | |
464 | ||
465 | if (data_ac) | |
466 | ocfs2_free_alloc_context(data_ac); | |
467 | ||
9b7895ef MF |
468 | if (meta_ac) |
469 | ocfs2_free_alloc_context(meta_ac); | |
534eaddd | 470 | |
062d3403 LD |
471 | /* |
472 | * We should call iput after the i_mutex of the bitmap been | |
473 | * unlocked in ocfs2_free_alloc_context, or the | |
474 | * ocfs2_delete_inode will mutex_lock again. | |
475 | */ | |
476 | if ((status < 0) && inode) { | |
595297a8 | 477 | if (dl) |
478 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
479 | ||
062d3403 LD |
480 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
481 | clear_nlink(inode); | |
482 | iput(inode); | |
483 | } | |
484 | ||
c1e8d35e TM |
485 | if (status) |
486 | mlog_errno(status); | |
ccd979bd MF |
487 | |
488 | return status; | |
489 | } | |
490 | ||
021960ca MF |
491 | static int __ocfs2_mknod_locked(struct inode *dir, |
492 | struct inode *inode, | |
493 | dev_t dev, | |
494 | struct buffer_head **new_fe_bh, | |
495 | struct buffer_head *parent_fe_bh, | |
496 | handle_t *handle, | |
497 | struct ocfs2_alloc_context *inode_ac, | |
498 | u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit) | |
ccd979bd MF |
499 | { |
500 | int status = 0; | |
021960ca | 501 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
ccd979bd MF |
502 | struct ocfs2_dinode *fe = NULL; |
503 | struct ocfs2_extent_list *fel; | |
9b7895ef | 504 | u16 feat; |
2931cdcb | 505 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
c62c38f6 | 506 | struct timespec64 ts; |
ccd979bd | 507 | |
ccd979bd | 508 | *new_fe_bh = NULL; |
ccd979bd | 509 | |
ccd979bd MF |
510 | /* populate as many fields early on as possible - many of |
511 | * these are used by the support functions here and in | |
512 | * callers. */ | |
513 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
d324cd4c | 514 | oi->ip_blkno = fe_blkno; |
ccd979bd MF |
515 | spin_lock(&osb->osb_lock); |
516 | inode->i_generation = osb->s_next_generation++; | |
517 | spin_unlock(&osb->osb_lock); | |
518 | ||
519 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
520 | if (!*new_fe_bh) { | |
7391a294 | 521 | status = -ENOMEM; |
ccd979bd MF |
522 | mlog_errno(status); |
523 | goto leave; | |
524 | } | |
8cb471e8 | 525 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
ccd979bd | 526 | |
0cf2f763 JB |
527 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
528 | *new_fe_bh, | |
13723d00 | 529 | OCFS2_JOURNAL_ACCESS_CREATE); |
ccd979bd MF |
530 | if (status < 0) { |
531 | mlog_errno(status); | |
532 | goto leave; | |
533 | } | |
534 | ||
535 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
536 | memset(fe, 0, osb->sb->s_blocksize); | |
537 | ||
538 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
539 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
540 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
2b6cb576 | 541 | fe->i_suballoc_loc = cpu_to_le64(suballoc_loc); |
ccd979bd | 542 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); |
4d0ddb2c | 543 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
2c034176 EB |
544 | fe->i_uid = cpu_to_le32(i_uid_read(inode)); |
545 | fe->i_gid = cpu_to_le32(i_gid_read(inode)); | |
f5d36202 TY |
546 | fe->i_mode = cpu_to_le16(inode->i_mode); |
547 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 548 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
198a1ca3 MF |
549 | |
550 | ocfs2_set_links_count(fe, inode->i_nlink); | |
ccd979bd MF |
551 | |
552 | fe->i_last_eb_blk = 0; | |
553 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
13eb9887 | 554 | fe->i_flags |= cpu_to_le32(OCFS2_VALID_FL); |
c62c38f6 | 555 | ktime_get_real_ts64(&ts); |
ccd979bd | 556 | fe->i_atime = fe->i_ctime = fe->i_mtime = |
c62c38f6 | 557 | cpu_to_le64(ts.tv_sec); |
ccd979bd | 558 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = |
c62c38f6 | 559 | cpu_to_le32(ts.tv_nsec); |
ccd979bd MF |
560 | fe->i_dtime = 0; |
561 | ||
5b6a3a2b | 562 | /* |
9b7895ef MF |
563 | * If supported, directories start with inline data. If inline |
564 | * isn't supported, but indexing is, we start them as indexed. | |
5b6a3a2b | 565 | */ |
9b7895ef | 566 | feat = le16_to_cpu(fe->i_dyn_features); |
f5d36202 | 567 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
568 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
569 | ||
d9ae49d6 TY |
570 | fe->id2.i_data.id_count = cpu_to_le16( |
571 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); | |
5b6a3a2b MF |
572 | } else { |
573 | fel = &fe->id2.i_list; | |
574 | fel->l_tree_depth = 0; | |
575 | fel->l_next_free_rec = 0; | |
576 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
577 | } | |
ccd979bd | 578 | |
ec20cec7 | 579 | ocfs2_journal_dirty(handle, *new_fe_bh); |
ccd979bd | 580 | |
b657c95c | 581 | ocfs2_populate_inode(inode, fe, 1); |
0cf2f763 | 582 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
c271c5c2 SM |
583 | if (!ocfs2_mount_local(osb)) { |
584 | status = ocfs2_create_new_inode_locks(inode); | |
585 | if (status < 0) | |
586 | mlog_errno(status); | |
587 | } | |
ccd979bd | 588 | |
2931cdcb DW |
589 | oi->i_sync_tid = handle->h_transaction->t_tid; |
590 | oi->i_datasync_tid = handle->h_transaction->t_tid; | |
591 | ||
ccd979bd MF |
592 | leave: |
593 | if (status < 0) { | |
594 | if (*new_fe_bh) { | |
595 | brelse(*new_fe_bh); | |
596 | *new_fe_bh = NULL; | |
597 | } | |
ccd979bd MF |
598 | } |
599 | ||
c1e8d35e TM |
600 | if (status) |
601 | mlog_errno(status); | |
ccd979bd MF |
602 | return status; |
603 | } | |
604 | ||
021960ca MF |
605 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
606 | struct inode *dir, | |
607 | struct inode *inode, | |
608 | dev_t dev, | |
609 | struct buffer_head **new_fe_bh, | |
610 | struct buffer_head *parent_fe_bh, | |
611 | handle_t *handle, | |
612 | struct ocfs2_alloc_context *inode_ac) | |
613 | { | |
614 | int status = 0; | |
615 | u64 suballoc_loc, fe_blkno = 0; | |
616 | u16 suballoc_bit; | |
617 | ||
618 | *new_fe_bh = NULL; | |
619 | ||
620 | status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh, | |
621 | inode_ac, &suballoc_loc, | |
622 | &suballoc_bit, &fe_blkno); | |
623 | if (status < 0) { | |
624 | mlog_errno(status); | |
625 | return status; | |
626 | } | |
627 | ||
b1529a41 | 628 | status = __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh, |
021960ca MF |
629 | parent_fe_bh, handle, inode_ac, |
630 | fe_blkno, suballoc_loc, suballoc_bit); | |
b1529a41 | 631 | if (status < 0) { |
632 | u64 bg_blkno = ocfs2_which_suballoc_group(fe_blkno, suballoc_bit); | |
633 | int tmp = ocfs2_free_suballoc_bits(handle, inode_ac->ac_inode, | |
634 | inode_ac->ac_bh, suballoc_bit, bg_blkno, 1); | |
635 | if (tmp) | |
636 | mlog_errno(tmp); | |
637 | } | |
638 | ||
639 | return status; | |
021960ca MF |
640 | } |
641 | ||
ccd979bd MF |
642 | static int ocfs2_mkdir(struct inode *dir, |
643 | struct dentry *dentry, | |
18bb1db3 | 644 | umode_t mode) |
ccd979bd MF |
645 | { |
646 | int ret; | |
647 | ||
8990e44a TM |
648 | trace_ocfs2_mkdir(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
649 | OCFS2_I(dir)->ip_blkno, mode); | |
ccd979bd | 650 | ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0); |
c1e8d35e TM |
651 | if (ret) |
652 | mlog_errno(ret); | |
ccd979bd MF |
653 | |
654 | return ret; | |
655 | } | |
656 | ||
657 | static int ocfs2_create(struct inode *dir, | |
658 | struct dentry *dentry, | |
4acdaf27 | 659 | umode_t mode, |
ebfc3b49 | 660 | bool excl) |
ccd979bd MF |
661 | { |
662 | int ret; | |
663 | ||
8990e44a TM |
664 | trace_ocfs2_create(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
665 | (unsigned long long)OCFS2_I(dir)->ip_blkno, mode); | |
ccd979bd | 666 | ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0); |
c1e8d35e TM |
667 | if (ret) |
668 | mlog_errno(ret); | |
ccd979bd MF |
669 | |
670 | return ret; | |
671 | } | |
672 | ||
673 | static int ocfs2_link(struct dentry *old_dentry, | |
674 | struct inode *dir, | |
675 | struct dentry *dentry) | |
676 | { | |
1fabe148 | 677 | handle_t *handle; |
2b0143b5 DH |
678 | struct inode *inode = d_inode(old_dentry); |
679 | struct inode *old_dir = d_inode(old_dentry->d_parent); | |
ccd979bd MF |
680 | int err; |
681 | struct buffer_head *fe_bh = NULL; | |
53dc20b9 | 682 | struct buffer_head *old_dir_bh = NULL; |
ccd979bd | 683 | struct buffer_head *parent_fe_bh = NULL; |
ccd979bd MF |
684 | struct ocfs2_dinode *fe = NULL; |
685 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
4a12ca3a | 686 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 | 687 | sigset_t oldset; |
0e048316 | 688 | u64 old_de_ino; |
ccd979bd | 689 | |
8990e44a TM |
690 | trace_ocfs2_link((unsigned long long)OCFS2_I(inode)->ip_blkno, |
691 | old_dentry->d_name.len, old_dentry->d_name.name, | |
692 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 693 | |
123a9643 MF |
694 | if (S_ISDIR(inode->i_mode)) |
695 | return -EPERM; | |
ccd979bd | 696 | |
9c89fe0a JK |
697 | err = dquot_initialize(dir); |
698 | if (err) { | |
699 | mlog_errno(err); | |
700 | return err; | |
701 | } | |
907f4554 | 702 | |
53dc20b9 X |
703 | err = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
704 | &parent_fe_bh, dir, 0); | |
ccd979bd MF |
705 | if (err < 0) { |
706 | if (err != -ENOENT) | |
707 | mlog_errno(err); | |
123a9643 | 708 | return err; |
ccd979bd MF |
709 | } |
710 | ||
53dc20b9 X |
711 | /* make sure both dirs have bhs |
712 | * get an extra ref on old_dir_bh if old==new */ | |
713 | if (!parent_fe_bh) { | |
714 | if (old_dir_bh) { | |
715 | parent_fe_bh = old_dir_bh; | |
716 | get_bh(parent_fe_bh); | |
717 | } else { | |
718 | mlog(ML_ERROR, "%s: no old_dir_bh!\n", osb->uuid_str); | |
719 | err = -EIO; | |
720 | goto out; | |
721 | } | |
722 | } | |
723 | ||
0f62de2c TY |
724 | if (!dir->i_nlink) { |
725 | err = -ENOENT; | |
123a9643 | 726 | goto out; |
0f62de2c TY |
727 | } |
728 | ||
53dc20b9 | 729 | err = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
0e048316 X |
730 | old_dentry->d_name.len, &old_de_ino); |
731 | if (err) { | |
732 | err = -ENOENT; | |
733 | goto out; | |
734 | } | |
735 | ||
736 | /* | |
737 | * Check whether another node removed the source inode while we | |
738 | * were in the vfs. | |
739 | */ | |
740 | if (old_de_ino != OCFS2_I(inode)->ip_blkno) { | |
741 | err = -ENOENT; | |
742 | goto out; | |
743 | } | |
744 | ||
ccd979bd MF |
745 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
746 | dentry->d_name.len); | |
747 | if (err) | |
123a9643 | 748 | goto out; |
ccd979bd MF |
749 | |
750 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
751 | dentry->d_name.name, | |
4a12ca3a | 752 | dentry->d_name.len, &lookup); |
ccd979bd MF |
753 | if (err < 0) { |
754 | mlog_errno(err); | |
123a9643 | 755 | goto out; |
ccd979bd MF |
756 | } |
757 | ||
e63aecb6 | 758 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
759 | if (err < 0) { |
760 | if (err != -ENOENT) | |
761 | mlog_errno(err); | |
123a9643 | 762 | goto out; |
ccd979bd MF |
763 | } |
764 | ||
765 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
198a1ca3 | 766 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
ccd979bd | 767 | err = -EMLINK; |
123a9643 | 768 | goto out_unlock_inode; |
ccd979bd MF |
769 | } |
770 | ||
a90714c1 | 771 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
772 | if (IS_ERR(handle)) { |
773 | err = PTR_ERR(handle); | |
774 | handle = NULL; | |
775 | mlog_errno(err); | |
123a9643 | 776 | goto out_unlock_inode; |
ccd979bd MF |
777 | } |
778 | ||
547ba7c8 JB |
779 | /* Starting to change things, restart is no longer possible. */ |
780 | ocfs2_block_signals(&oldset); | |
781 | ||
0cf2f763 | 782 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 783 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
784 | if (err < 0) { |
785 | mlog_errno(err); | |
123a9643 | 786 | goto out_commit; |
ccd979bd MF |
787 | } |
788 | ||
d8c76e6f | 789 | inc_nlink(inode); |
078cd827 | 790 | inode->i_ctime = current_time(inode); |
198a1ca3 | 791 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
792 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
793 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
ec20cec7 | 794 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd MF |
795 | |
796 | err = ocfs2_add_entry(handle, dentry, inode, | |
797 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 798 | parent_fe_bh, &lookup); |
ccd979bd | 799 | if (err) { |
198a1ca3 | 800 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 801 | drop_nlink(inode); |
ccd979bd | 802 | mlog_errno(err); |
123a9643 | 803 | goto out_commit; |
ccd979bd MF |
804 | } |
805 | ||
0027dd5b | 806 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
807 | if (err) { |
808 | mlog_errno(err); | |
123a9643 | 809 | goto out_commit; |
379dfe9d MF |
810 | } |
811 | ||
7de9c6ee | 812 | ihold(inode); |
ccd979bd | 813 | d_instantiate(dentry, inode); |
123a9643 MF |
814 | |
815 | out_commit: | |
02dc1af4 | 816 | ocfs2_commit_trans(osb, handle); |
547ba7c8 | 817 | ocfs2_unblock_signals(&oldset); |
123a9643 | 818 | out_unlock_inode: |
e63aecb6 | 819 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
820 | |
821 | out: | |
53dc20b9 | 822 | ocfs2_double_unlock(old_dir, dir); |
123a9643 | 823 | |
a81cb88b MF |
824 | brelse(fe_bh); |
825 | brelse(parent_fe_bh); | |
53dc20b9 | 826 | brelse(old_dir_bh); |
ccd979bd | 827 | |
4a12ca3a MF |
828 | ocfs2_free_dir_lookup_result(&lookup); |
829 | ||
c1e8d35e TM |
830 | if (err) |
831 | mlog_errno(err); | |
ccd979bd MF |
832 | |
833 | return err; | |
834 | } | |
835 | ||
379dfe9d MF |
836 | /* |
837 | * Takes and drops an exclusive lock on the given dentry. This will | |
838 | * force other nodes to drop it. | |
839 | */ | |
840 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
841 | { | |
842 | int ret; | |
843 | ||
844 | ret = ocfs2_dentry_lock(dentry, 1); | |
845 | if (ret) | |
846 | mlog_errno(ret); | |
847 | else | |
848 | ocfs2_dentry_unlock(dentry, 1); | |
849 | ||
850 | return ret; | |
851 | } | |
852 | ||
b5a8bb71 | 853 | static inline int ocfs2_inode_is_unlinkable(struct inode *inode) |
17ff7856 MF |
854 | { |
855 | if (S_ISDIR(inode->i_mode)) { | |
856 | if (inode->i_nlink == 2) | |
857 | return 1; | |
858 | return 0; | |
859 | } | |
860 | ||
861 | if (inode->i_nlink == 1) | |
862 | return 1; | |
863 | return 0; | |
864 | } | |
865 | ||
ccd979bd MF |
866 | static int ocfs2_unlink(struct inode *dir, |
867 | struct dentry *dentry) | |
868 | { | |
869 | int status; | |
30a4f5e8 | 870 | int child_locked = 0; |
b5a8bb71 | 871 | bool is_unlinkable = false; |
2b0143b5 | 872 | struct inode *inode = d_inode(dentry); |
5098c27b | 873 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
874 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
875 | u64 blkno; | |
876 | struct ocfs2_dinode *fe = NULL; | |
877 | struct buffer_head *fe_bh = NULL; | |
878 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 879 | handle_t *handle = NULL; |
ccd979bd | 880 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
881 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
882 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd | 883 | |
8990e44a TM |
884 | trace_ocfs2_unlink(dir, dentry, dentry->d_name.len, |
885 | dentry->d_name.name, | |
886 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
887 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 888 | |
9c89fe0a JK |
889 | status = dquot_initialize(dir); |
890 | if (status) { | |
891 | mlog_errno(status); | |
892 | return status; | |
893 | } | |
907f4554 | 894 | |
2b0143b5 | 895 | BUG_ON(d_inode(dentry->d_parent) != dir); |
ccd979bd | 896 | |
8990e44a | 897 | if (inode == osb->root_inode) |
30a4f5e8 | 898 | return -EPERM; |
ccd979bd | 899 | |
cb25797d JK |
900 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
901 | OI_LS_PARENT); | |
ccd979bd MF |
902 | if (status < 0) { |
903 | if (status != -ENOENT) | |
904 | mlog_errno(status); | |
30a4f5e8 | 905 | return status; |
ccd979bd MF |
906 | } |
907 | ||
908 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
909 | dentry->d_name.len, &blkno, dir, |
910 | &lookup); | |
ccd979bd MF |
911 | if (status < 0) { |
912 | if (status != -ENOENT) | |
913 | mlog_errno(status); | |
914 | goto leave; | |
915 | } | |
916 | ||
917 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
918 | status = -ENOENT; | |
919 | ||
8990e44a TM |
920 | trace_ocfs2_unlink_noent( |
921 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
922 | (unsigned long long)blkno, | |
923 | OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
924 | goto leave; |
925 | } | |
926 | ||
e63aecb6 | 927 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
928 | if (status < 0) { |
929 | if (status != -ENOENT) | |
930 | mlog_errno(status); | |
931 | goto leave; | |
932 | } | |
30a4f5e8 | 933 | child_locked = 1; |
ccd979bd MF |
934 | |
935 | if (S_ISDIR(inode->i_mode)) { | |
b80b549c | 936 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
ccd979bd MF |
937 | status = -ENOTEMPTY; |
938 | goto leave; | |
939 | } | |
940 | } | |
941 | ||
379dfe9d | 942 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 943 | if (status < 0) { |
34d024f8 | 944 | /* This remote delete should succeed under all normal |
ccd979bd MF |
945 | * circumstances. */ |
946 | mlog_errno(status); | |
947 | goto leave; | |
948 | } | |
949 | ||
b5a8bb71 | 950 | if (ocfs2_inode_is_unlinkable(inode)) { |
19bd341f TM |
951 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
952 | OCFS2_I(inode)->ip_blkno, | |
06ee5c75 JQ |
953 | orphan_name, &orphan_insert, |
954 | false); | |
ccd979bd MF |
955 | if (status < 0) { |
956 | mlog_errno(status); | |
957 | goto leave; | |
958 | } | |
b5a8bb71 | 959 | is_unlinkable = true; |
ccd979bd MF |
960 | } |
961 | ||
a90714c1 | 962 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
963 | if (IS_ERR(handle)) { |
964 | status = PTR_ERR(handle); | |
965 | handle = NULL; | |
966 | mlog_errno(status); | |
967 | goto leave; | |
968 | } | |
969 | ||
0cf2f763 | 970 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 971 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
972 | if (status < 0) { |
973 | mlog_errno(status); | |
974 | goto leave; | |
975 | } | |
976 | ||
977 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
978 | ||
ccd979bd | 979 | /* delete the name from the parent dir */ |
4a12ca3a | 980 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
981 | if (status < 0) { |
982 | mlog_errno(status); | |
983 | goto leave; | |
984 | } | |
985 | ||
17ff7856 MF |
986 | if (S_ISDIR(inode->i_mode)) |
987 | drop_nlink(inode); | |
988 | drop_nlink(inode); | |
198a1ca3 | 989 | ocfs2_set_links_count(fe, inode->i_nlink); |
ec20cec7 | 990 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd | 991 | |
078cd827 | 992 | dir->i_ctime = dir->i_mtime = current_time(dir); |
592282cf | 993 | if (S_ISDIR(inode->i_mode)) |
17ff7856 | 994 | drop_nlink(dir); |
592282cf MF |
995 | |
996 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
997 | if (status < 0) { | |
998 | mlog_errno(status); | |
999 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 1000 | inc_nlink(dir); |
b5a8bb71 YL |
1001 | goto leave; |
1002 | } | |
1003 | ||
1004 | if (is_unlinkable) { | |
1005 | status = ocfs2_orphan_add(osb, handle, inode, fe_bh, | |
06ee5c75 | 1006 | orphan_name, &orphan_insert, orphan_dir, false); |
b5a8bb71 YL |
1007 | if (status < 0) |
1008 | mlog_errno(status); | |
ccd979bd MF |
1009 | } |
1010 | ||
1011 | leave: | |
ccd979bd | 1012 | if (handle) |
02dc1af4 | 1013 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1014 | |
5098c27b MF |
1015 | if (orphan_dir) { |
1016 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1017 | ocfs2_inode_unlock(orphan_dir, 1); |
5955102c | 1018 | inode_unlock(orphan_dir); |
5098c27b MF |
1019 | iput(orphan_dir); |
1020 | } | |
1021 | ||
3cb2ec43 JQ |
1022 | if (child_locked) |
1023 | ocfs2_inode_unlock(inode, 1); | |
1024 | ||
1025 | ocfs2_inode_unlock(dir, 1); | |
1026 | ||
a81cb88b | 1027 | brelse(fe_bh); |
a81cb88b | 1028 | brelse(parent_node_bh); |
4a12ca3a MF |
1029 | |
1030 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1031 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd | 1032 | |
f5b25855 | 1033 | if (status && (status != -ENOTEMPTY) && (status != -ENOENT)) |
c1e8d35e | 1034 | mlog_errno(status); |
ccd979bd MF |
1035 | |
1036 | return status; | |
1037 | } | |
1038 | ||
f7a14f32 YJ |
1039 | static int ocfs2_check_if_ancestor(struct ocfs2_super *osb, |
1040 | u64 src_inode_no, u64 dest_inode_no) | |
1041 | { | |
1042 | int ret = 0, i = 0; | |
1043 | u64 parent_inode_no = 0; | |
1044 | u64 child_inode_no = src_inode_no; | |
1045 | struct inode *child_inode; | |
1046 | ||
1047 | #define MAX_LOOKUP_TIMES 32 | |
1048 | while (1) { | |
1049 | child_inode = ocfs2_iget(osb, child_inode_no, 0, 0); | |
1050 | if (IS_ERR(child_inode)) { | |
1051 | ret = PTR_ERR(child_inode); | |
1052 | break; | |
1053 | } | |
1054 | ||
1055 | ret = ocfs2_inode_lock(child_inode, NULL, 0); | |
1056 | if (ret < 0) { | |
1057 | iput(child_inode); | |
1058 | if (ret != -ENOENT) | |
1059 | mlog_errno(ret); | |
1060 | break; | |
1061 | } | |
1062 | ||
1063 | ret = ocfs2_lookup_ino_from_name(child_inode, "..", 2, | |
1064 | &parent_inode_no); | |
1065 | ocfs2_inode_unlock(child_inode, 0); | |
1066 | iput(child_inode); | |
1067 | if (ret < 0) { | |
1068 | ret = -ENOENT; | |
1069 | break; | |
1070 | } | |
1071 | ||
1072 | if (parent_inode_no == dest_inode_no) { | |
1073 | ret = 1; | |
1074 | break; | |
1075 | } | |
1076 | ||
1077 | if (parent_inode_no == osb->root_inode->i_ino) { | |
1078 | ret = 0; | |
1079 | break; | |
1080 | } | |
1081 | ||
1082 | child_inode_no = parent_inode_no; | |
1083 | ||
1084 | if (++i >= MAX_LOOKUP_TIMES) { | |
1085 | mlog(ML_NOTICE, "max lookup times reached, filesystem " | |
1086 | "may have nested directories, " | |
1087 | "src inode: %llu, dest inode: %llu.\n", | |
1088 | (unsigned long long)src_inode_no, | |
1089 | (unsigned long long)dest_inode_no); | |
1090 | ret = 0; | |
1091 | break; | |
1092 | } | |
1093 | } | |
1094 | ||
1095 | return ret; | |
1096 | } | |
1097 | ||
ccd979bd | 1098 | /* |
53dc20b9 | 1099 | * The only place this should be used is rename and link! |
ccd979bd MF |
1100 | * if they have the same id, then the 1st one is the only one locked. |
1101 | */ | |
1102 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
1103 | struct buffer_head **bh1, |
1104 | struct inode *inode1, | |
1105 | struct buffer_head **bh2, | |
53dc20b9 X |
1106 | struct inode *inode2, |
1107 | int rename) | |
ccd979bd MF |
1108 | { |
1109 | int status; | |
f7a14f32 | 1110 | int inode1_is_ancestor, inode2_is_ancestor; |
ccd979bd MF |
1111 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); |
1112 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
ccd979bd | 1113 | |
8990e44a TM |
1114 | trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno, |
1115 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 1116 | |
ccd979bd MF |
1117 | if (*bh1) |
1118 | *bh1 = NULL; | |
1119 | if (*bh2) | |
1120 | *bh2 = NULL; | |
1121 | ||
f7a14f32 YJ |
1122 | /* we always want to lock the one with the lower lockid first. |
1123 | * and if they are nested, we lock ancestor first */ | |
ccd979bd | 1124 | if (oi1->ip_blkno != oi2->ip_blkno) { |
f7a14f32 YJ |
1125 | inode1_is_ancestor = ocfs2_check_if_ancestor(osb, oi2->ip_blkno, |
1126 | oi1->ip_blkno); | |
1127 | if (inode1_is_ancestor < 0) { | |
1128 | status = inode1_is_ancestor; | |
1129 | goto bail; | |
1130 | } | |
1131 | ||
1132 | inode2_is_ancestor = ocfs2_check_if_ancestor(osb, oi1->ip_blkno, | |
1133 | oi2->ip_blkno); | |
1134 | if (inode2_is_ancestor < 0) { | |
1135 | status = inode2_is_ancestor; | |
1136 | goto bail; | |
1137 | } | |
1138 | ||
1139 | if ((inode1_is_ancestor == 1) || | |
1140 | (oi1->ip_blkno < oi2->ip_blkno && | |
1141 | inode2_is_ancestor == 0)) { | |
ccd979bd | 1142 | /* switch id1 and id2 around */ |
ab1ba021 FF |
1143 | swap(bh2, bh1); |
1144 | swap(inode2, inode1); | |
ccd979bd MF |
1145 | } |
1146 | /* lock id2 */ | |
cb25797d | 1147 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
53dc20b9 | 1148 | rename == 1 ? OI_LS_RENAME1 : OI_LS_PARENT); |
ccd979bd MF |
1149 | if (status < 0) { |
1150 | if (status != -ENOENT) | |
1151 | mlog_errno(status); | |
1152 | goto bail; | |
1153 | } | |
1154 | } | |
8d5596c6 | 1155 | |
ccd979bd | 1156 | /* lock id1 */ |
53dc20b9 X |
1157 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, |
1158 | rename == 1 ? OI_LS_RENAME2 : OI_LS_PARENT); | |
ccd979bd | 1159 | if (status < 0) { |
8d5596c6 MF |
1160 | /* |
1161 | * An error return must mean that no cluster locks | |
1162 | * were held on function exit. | |
1163 | */ | |
1e6d9153 | 1164 | if (oi1->ip_blkno != oi2->ip_blkno) { |
e63aecb6 | 1165 | ocfs2_inode_unlock(inode2, 1); |
1e6d9153 TM |
1166 | brelse(*bh2); |
1167 | *bh2 = NULL; | |
1168 | } | |
8d5596c6 | 1169 | |
ccd979bd MF |
1170 | if (status != -ENOENT) |
1171 | mlog_errno(status); | |
ccd979bd | 1172 | } |
8d5596c6 | 1173 | |
8990e44a | 1174 | trace_ocfs2_double_lock_end( |
d324cd4c | 1175 | (unsigned long long)oi1->ip_blkno, |
1176 | (unsigned long long)oi2->ip_blkno); | |
8990e44a | 1177 | |
ccd979bd | 1178 | bail: |
c1e8d35e TM |
1179 | if (status) |
1180 | mlog_errno(status); | |
ccd979bd MF |
1181 | return status; |
1182 | } | |
1183 | ||
8d5596c6 MF |
1184 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
1185 | { | |
e63aecb6 | 1186 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
1187 | |
1188 | if (inode1 != inode2) | |
e63aecb6 | 1189 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1190 | } |
1191 | ||
ccd979bd MF |
1192 | static int ocfs2_rename(struct inode *old_dir, |
1193 | struct dentry *old_dentry, | |
1194 | struct inode *new_dir, | |
1cd66c93 MS |
1195 | struct dentry *new_dentry, |
1196 | unsigned int flags) | |
ccd979bd | 1197 | { |
4a12ca3a MF |
1198 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1199 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
2b0143b5 DH |
1200 | struct inode *old_inode = d_inode(old_dentry); |
1201 | struct inode *new_inode = d_inode(new_dentry); | |
5098c27b | 1202 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1203 | struct ocfs2_dinode *newfe = NULL; |
1204 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
ccd979bd | 1205 | struct buffer_head *newfe_bh = NULL; |
592282cf | 1206 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd | 1207 | struct ocfs2_super *osb = NULL; |
5b6a3a2b | 1208 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1209 | handle_t *handle = NULL; |
ccd979bd MF |
1210 | struct buffer_head *old_dir_bh = NULL; |
1211 | struct buffer_head *new_dir_bh = NULL; | |
847c9db5 | 1212 | u32 old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1213 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1214 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1215 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1216 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1217 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1218 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
5fb1beb0 | 1219 | bool should_add_orphan = false; |
ccd979bd | 1220 | |
1cd66c93 MS |
1221 | if (flags) |
1222 | return -EINVAL; | |
1223 | ||
ccd979bd MF |
1224 | /* At some point it might be nice to break this function up a |
1225 | * bit. */ | |
1226 | ||
8990e44a TM |
1227 | trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry, |
1228 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1229 | new_dentry->d_name.len, new_dentry->d_name.name); | |
ccd979bd | 1230 | |
9c89fe0a JK |
1231 | status = dquot_initialize(old_dir); |
1232 | if (status) { | |
1233 | mlog_errno(status); | |
1234 | goto bail; | |
1235 | } | |
1236 | status = dquot_initialize(new_dir); | |
1237 | if (status) { | |
1238 | mlog_errno(status); | |
1239 | goto bail; | |
1240 | } | |
907f4554 | 1241 | |
ccd979bd MF |
1242 | osb = OCFS2_SB(old_dir->i_sb); |
1243 | ||
1244 | if (new_inode) { | |
1245 | if (!igrab(new_inode)) | |
1246 | BUG(); | |
1247 | } | |
1248 | ||
1b3c3714 | 1249 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1250 | * a/b/c |
1251 | * a/d | |
1252 | * a,b,c, and d are all directories. | |
1253 | * | |
1254 | * from cwd of 'a' on both nodes: | |
1255 | * node1: mv b/c d | |
1256 | * node2: mv d b/c | |
1257 | * | |
1258 | * And that's why, just like the VFS, we need a file system | |
1259 | * rename lock. */ | |
5dabd695 | 1260 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1261 | status = ocfs2_rename_lock(osb); |
1262 | if (status < 0) { | |
1263 | mlog_errno(status); | |
1264 | goto bail; | |
1265 | } | |
1266 | rename_lock = 1; | |
f7a14f32 YJ |
1267 | |
1268 | /* here we cannot guarantee the inodes haven't just been | |
1269 | * changed, so check if they are nested again */ | |
1270 | status = ocfs2_check_if_ancestor(osb, new_dir->i_ino, | |
1271 | old_inode->i_ino); | |
1272 | if (status < 0) { | |
1273 | mlog_errno(status); | |
1274 | goto bail; | |
1275 | } else if (status == 1) { | |
1276 | status = -EPERM; | |
1277 | trace_ocfs2_rename_not_permitted( | |
1278 | (unsigned long long)old_inode->i_ino, | |
1279 | (unsigned long long)new_dir->i_ino); | |
1280 | goto bail; | |
1281 | } | |
ccd979bd MF |
1282 | } |
1283 | ||
ccd979bd | 1284 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 | 1285 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
53dc20b9 | 1286 | &new_dir_bh, new_dir, 1); |
ccd979bd MF |
1287 | if (status < 0) { |
1288 | mlog_errno(status); | |
1289 | goto bail; | |
1290 | } | |
8d5596c6 | 1291 | parents_locked = 1; |
ccd979bd | 1292 | |
928dda1f YJ |
1293 | if (!new_dir->i_nlink) { |
1294 | status = -EACCES; | |
1295 | goto bail; | |
1296 | } | |
1297 | ||
ccd979bd MF |
1298 | /* make sure both dirs have bhs |
1299 | * get an extra ref on old_dir_bh if old==new */ | |
1300 | if (!new_dir_bh) { | |
1301 | if (old_dir_bh) { | |
1302 | new_dir_bh = old_dir_bh; | |
1303 | get_bh(new_dir_bh); | |
1304 | } else { | |
1305 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1306 | status = -EIO; | |
1307 | goto bail; | |
1308 | } | |
1309 | } | |
1310 | ||
379dfe9d | 1311 | /* |
592282cf | 1312 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1313 | * also ensures that the downconvert thread on other nodes |
1314 | * won't have to concurrently downconvert the inode and the | |
1315 | * dentry locks. | |
379dfe9d | 1316 | */ |
cb25797d JK |
1317 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
1318 | OI_LS_PARENT); | |
379dfe9d MF |
1319 | if (status < 0) { |
1320 | if (status != -ENOENT) | |
ccd979bd | 1321 | mlog_errno(status); |
379dfe9d MF |
1322 | goto bail; |
1323 | } | |
8d5596c6 | 1324 | old_child_locked = 1; |
ccd979bd | 1325 | |
379dfe9d MF |
1326 | status = ocfs2_remote_dentry_delete(old_dentry); |
1327 | if (status < 0) { | |
1328 | mlog_errno(status); | |
1329 | goto bail; | |
1330 | } | |
1331 | ||
1332 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1333 | u64 old_inode_parent; |
1334 | ||
4a12ca3a | 1335 | update_dot_dot = 1; |
38760e24 | 1336 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1337 | old_inode, |
1338 | &old_inode_dot_dot_res); | |
38760e24 MF |
1339 | if (status) { |
1340 | status = -EIO; | |
ccd979bd | 1341 | goto bail; |
38760e24 | 1342 | } |
ccd979bd | 1343 | |
38760e24 MF |
1344 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1345 | status = -EIO; | |
ccd979bd | 1346 | goto bail; |
38760e24 MF |
1347 | } |
1348 | ||
1349 | if (!new_inode && new_dir != old_dir && | |
198a1ca3 | 1350 | new_dir->i_nlink >= ocfs2_link_max(osb)) { |
38760e24 | 1351 | status = -EMLINK; |
ccd979bd | 1352 | goto bail; |
38760e24 | 1353 | } |
ccd979bd MF |
1354 | } |
1355 | ||
5b6a3a2b MF |
1356 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1357 | old_dentry->d_name.len, | |
1358 | &old_de_ino); | |
1359 | if (status) { | |
1360 | status = -ENOENT; | |
ccd979bd | 1361 | goto bail; |
5b6a3a2b | 1362 | } |
ccd979bd MF |
1363 | |
1364 | /* | |
1365 | * Check for inode number is _not_ due to possible IO errors. | |
1366 | * We might rmdir the source, keep it as pwd of some process | |
1367 | * and merrily kill the link to whatever was created under the | |
1368 | * same name. Goodbye sticky bit ;-< | |
1369 | */ | |
5b6a3a2b MF |
1370 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1371 | status = -ENOENT; | |
ccd979bd | 1372 | goto bail; |
5b6a3a2b | 1373 | } |
ccd979bd MF |
1374 | |
1375 | /* check if the target already exists (in which case we need | |
1376 | * to delete it */ | |
1377 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1378 | new_dentry->d_name.len, | |
4a12ca3a MF |
1379 | &newfe_blkno, new_dir, |
1380 | &target_lookup_res); | |
ccd979bd MF |
1381 | /* The only error we allow here is -ENOENT because the new |
1382 | * file not existing is perfectly valid. */ | |
1383 | if ((status < 0) && (status != -ENOENT)) { | |
1384 | /* If we cannot find the file specified we should just */ | |
1385 | /* return the error... */ | |
1386 | mlog_errno(status); | |
1387 | goto bail; | |
1388 | } | |
4a12ca3a MF |
1389 | if (status == 0) |
1390 | target_exists = 1; | |
ccd979bd | 1391 | |
4a12ca3a | 1392 | if (!target_exists && new_inode) { |
e325a88f SE |
1393 | /* |
1394 | * Target was unlinked by another node while we were | |
1395 | * waiting to get to ocfs2_rename(). There isn't | |
1396 | * anything we can do here to help the situation, so | |
1397 | * bubble up the appropriate error. | |
1398 | */ | |
1399 | status = -ENOENT; | |
1400 | goto bail; | |
1401 | } | |
ccd979bd MF |
1402 | |
1403 | /* In case we need to overwrite an existing file, we blow it | |
1404 | * away first */ | |
4a12ca3a | 1405 | if (target_exists) { |
ccd979bd MF |
1406 | /* VFS didn't think there existed an inode here, but |
1407 | * someone else in the cluster must have raced our | |
1408 | * rename to create one. Today we error cleanly, in | |
1409 | * the future we should consider calling iget to build | |
1410 | * a new struct inode for this entry. */ | |
1411 | if (!new_inode) { | |
1412 | status = -EACCES; | |
1413 | ||
8990e44a TM |
1414 | trace_ocfs2_rename_target_exists(new_dentry->d_name.len, |
1415 | new_dentry->d_name.name); | |
ccd979bd MF |
1416 | goto bail; |
1417 | } | |
1418 | ||
1419 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1420 | status = -EACCES; | |
1421 | ||
8990e44a | 1422 | trace_ocfs2_rename_disagree( |
b0697053 MF |
1423 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, |
1424 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1425 | OCFS2_I(new_inode)->ip_flags); |
1426 | goto bail; | |
1427 | } | |
1428 | ||
e63aecb6 | 1429 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1430 | if (status < 0) { |
1431 | if (status != -ENOENT) | |
1432 | mlog_errno(status); | |
1433 | goto bail; | |
1434 | } | |
8d5596c6 | 1435 | new_child_locked = 1; |
ccd979bd | 1436 | |
379dfe9d | 1437 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1438 | if (status < 0) { |
1439 | mlog_errno(status); | |
1440 | goto bail; | |
1441 | } | |
1442 | ||
1443 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1444 | ||
8990e44a | 1445 | trace_ocfs2_rename_over_existing( |
b0697053 | 1446 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1447 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1448 | ||
1449 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1450 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
19bd341f | 1451 | OCFS2_I(new_inode)->ip_blkno, |
06ee5c75 JQ |
1452 | orphan_name, &orphan_insert, |
1453 | false); | |
ccd979bd MF |
1454 | if (status < 0) { |
1455 | mlog_errno(status); | |
1456 | goto bail; | |
1457 | } | |
5fb1beb0 | 1458 | should_add_orphan = true; |
ccd979bd MF |
1459 | } |
1460 | } else { | |
2b0143b5 | 1461 | BUG_ON(d_inode(new_dentry->d_parent) != new_dir); |
ccd979bd MF |
1462 | |
1463 | status = ocfs2_check_dir_for_entry(new_dir, | |
1464 | new_dentry->d_name.name, | |
1465 | new_dentry->d_name.len); | |
1466 | if (status) | |
1467 | goto bail; | |
1468 | ||
1469 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1470 | new_dentry->d_name.name, | |
1471 | new_dentry->d_name.len, | |
4a12ca3a | 1472 | &target_insert); |
ccd979bd MF |
1473 | if (status < 0) { |
1474 | mlog_errno(status); | |
1475 | goto bail; | |
1476 | } | |
1477 | } | |
1478 | ||
a90714c1 | 1479 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1480 | if (IS_ERR(handle)) { |
1481 | status = PTR_ERR(handle); | |
1482 | handle = NULL; | |
1483 | mlog_errno(status); | |
1484 | goto bail; | |
1485 | } | |
1486 | ||
4a12ca3a | 1487 | if (target_exists) { |
ccd979bd | 1488 | if (S_ISDIR(new_inode->i_mode)) { |
b80b549c MF |
1489 | if (new_inode->i_nlink != 2 || |
1490 | !ocfs2_empty_dir(new_inode)) { | |
ccd979bd MF |
1491 | status = -ENOTEMPTY; |
1492 | goto bail; | |
1493 | } | |
1494 | } | |
0cf2f763 JB |
1495 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
1496 | newfe_bh, | |
13723d00 | 1497 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1498 | if (status < 0) { |
1499 | mlog_errno(status); | |
1500 | goto bail; | |
1501 | } | |
1502 | ||
ccd979bd | 1503 | /* change the dirent to point to the correct inode */ |
4a12ca3a MF |
1504 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1505 | old_inode); | |
ccd979bd MF |
1506 | if (status < 0) { |
1507 | mlog_errno(status); | |
1508 | goto bail; | |
1509 | } | |
cc56c33e | 1510 | inode_inc_iversion(new_dir); |
ccd979bd MF |
1511 | |
1512 | if (S_ISDIR(new_inode->i_mode)) | |
198a1ca3 | 1513 | ocfs2_set_links_count(newfe, 0); |
ccd979bd | 1514 | else |
198a1ca3 | 1515 | ocfs2_add_links_count(newfe, -1); |
ec20cec7 | 1516 | ocfs2_journal_dirty(handle, newfe_bh); |
5fb1beb0 | 1517 | if (should_add_orphan) { |
1518 | status = ocfs2_orphan_add(osb, handle, new_inode, | |
1519 | newfe_bh, orphan_name, | |
06ee5c75 | 1520 | &orphan_insert, orphan_dir, false); |
5fb1beb0 | 1521 | if (status < 0) { |
1522 | mlog_errno(status); | |
1523 | goto bail; | |
1524 | } | |
1525 | } | |
ccd979bd MF |
1526 | } else { |
1527 | /* if the name was not found in new_dir, add it now */ | |
1528 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1529 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1530 | new_dir_bh, &target_insert); |
ccd979bd MF |
1531 | } |
1532 | ||
078cd827 | 1533 | old_inode->i_ctime = current_time(old_inode); |
ccd979bd | 1534 | mark_inode_dirty(old_inode); |
480214d7 | 1535 | |
0cf2f763 JB |
1536 | status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), |
1537 | old_inode_bh, | |
13723d00 | 1538 | OCFS2_JOURNAL_ACCESS_WRITE); |
480214d7 SM |
1539 | if (status >= 0) { |
1540 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1541 | ||
1542 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); | |
1543 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); | |
ec20cec7 | 1544 | ocfs2_journal_dirty(handle, old_inode_bh); |
480214d7 SM |
1545 | } else |
1546 | mlog_errno(status); | |
ccd979bd | 1547 | |
5b6a3a2b MF |
1548 | /* |
1549 | * Now that the name has been added to new_dir, remove the old name. | |
1550 | * | |
1551 | * We don't keep any directory entry context around until now | |
1552 | * because the insert might have changed the type of directory | |
1553 | * we're dealing with. | |
1554 | */ | |
4a12ca3a MF |
1555 | status = ocfs2_find_entry(old_dentry->d_name.name, |
1556 | old_dentry->d_name.len, old_dir, | |
1557 | &old_entry_lookup); | |
807a7907 | 1558 | if (status) { |
1559 | if (!is_journal_aborted(osb->journal->j_journal)) { | |
1560 | ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " | |
1561 | "is not deleted.", | |
1562 | new_dentry->d_name.len, new_dentry->d_name.name, | |
1563 | old_dentry->d_name.len, old_dentry->d_name.name); | |
1564 | } | |
5b6a3a2b | 1565 | goto bail; |
807a7907 | 1566 | } |
5b6a3a2b | 1567 | |
4a12ca3a | 1568 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
ccd979bd MF |
1569 | if (status < 0) { |
1570 | mlog_errno(status); | |
807a7907 | 1571 | if (!is_journal_aborted(osb->journal->j_journal)) { |
1572 | ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " | |
1573 | "is not deleted.", | |
1574 | new_dentry->d_name.len, new_dentry->d_name.name, | |
1575 | old_dentry->d_name.len, old_dentry->d_name.name); | |
1576 | } | |
ccd979bd MF |
1577 | goto bail; |
1578 | } | |
1579 | ||
1580 | if (new_inode) { | |
6d6b77f1 | 1581 | drop_nlink(new_inode); |
078cd827 | 1582 | new_inode->i_ctime = current_time(new_inode); |
ccd979bd | 1583 | } |
078cd827 | 1584 | old_dir->i_ctime = old_dir->i_mtime = current_time(old_dir); |
4a12ca3a MF |
1585 | |
1586 | if (update_dot_dot) { | |
1587 | status = ocfs2_update_entry(old_inode, handle, | |
1588 | &old_inode_dot_dot_res, new_dir); | |
6d6b77f1 | 1589 | drop_nlink(old_dir); |
ccd979bd | 1590 | if (new_inode) { |
6d6b77f1 | 1591 | drop_nlink(new_inode); |
ccd979bd | 1592 | } else { |
d8c76e6f | 1593 | inc_nlink(new_dir); |
ccd979bd MF |
1594 | mark_inode_dirty(new_dir); |
1595 | } | |
1596 | } | |
1597 | mark_inode_dirty(old_dir); | |
592282cf MF |
1598 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1599 | if (new_inode) { | |
ccd979bd | 1600 | mark_inode_dirty(new_inode); |
592282cf MF |
1601 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1602 | } | |
ccd979bd | 1603 | |
592282cf MF |
1604 | if (old_dir != new_dir) { |
1605 | /* Keep the same times on both directories.*/ | |
1606 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; | |
1607 | ||
1608 | /* | |
1609 | * This will also pick up the i_nlink change from the | |
1610 | * block above. | |
1611 | */ | |
1612 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1613 | } | |
ccd979bd MF |
1614 | |
1615 | if (old_dir_nlink != old_dir->i_nlink) { | |
1616 | if (!old_dir_bh) { | |
1617 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1618 | "%llu from %d to %d but bh is NULL!\n", |
1619 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1620 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1621 | } else { |
1622 | struct ocfs2_dinode *fe; | |
0cf2f763 JB |
1623 | status = ocfs2_journal_access_di(handle, |
1624 | INODE_CACHE(old_dir), | |
1625 | old_dir_bh, | |
1626 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd | 1627 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
198a1ca3 | 1628 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
ec20cec7 | 1629 | ocfs2_journal_dirty(handle, old_dir_bh); |
ccd979bd MF |
1630 | } |
1631 | } | |
379dfe9d | 1632 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1633 | status = 0; |
1634 | bail: | |
ccd979bd | 1635 | if (handle) |
02dc1af4 | 1636 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1637 | |
5098c27b MF |
1638 | if (orphan_dir) { |
1639 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1640 | ocfs2_inode_unlock(orphan_dir, 1); |
5955102c | 1641 | inode_unlock(orphan_dir); |
5098c27b MF |
1642 | iput(orphan_dir); |
1643 | } | |
1644 | ||
3cb2ec43 JQ |
1645 | if (new_child_locked) |
1646 | ocfs2_inode_unlock(new_inode, 1); | |
1647 | ||
1648 | if (old_child_locked) | |
1649 | ocfs2_inode_unlock(old_inode, 1); | |
1650 | ||
1651 | if (parents_locked) | |
1652 | ocfs2_double_unlock(old_dir, new_dir); | |
1653 | ||
1654 | if (rename_lock) | |
1655 | ocfs2_rename_unlock(osb); | |
1656 | ||
ccd979bd MF |
1657 | if (new_inode) |
1658 | sync_mapping_buffers(old_inode->i_mapping); | |
1659 | ||
72865d92 | 1660 | iput(new_inode); |
4a12ca3a MF |
1661 | |
1662 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1663 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1664 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1665 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1666 | ocfs2_free_dir_lookup_result(&target_insert); | |
1667 | ||
a81cb88b MF |
1668 | brelse(newfe_bh); |
1669 | brelse(old_inode_bh); | |
1670 | brelse(old_dir_bh); | |
1671 | brelse(new_dir_bh); | |
ccd979bd | 1672 | |
c1e8d35e TM |
1673 | if (status) |
1674 | mlog_errno(status); | |
ccd979bd MF |
1675 | |
1676 | return status; | |
1677 | } | |
1678 | ||
1679 | /* | |
1680 | * we expect i_size = strlen(symname). Copy symname into the file | |
1681 | * data, including the null terminator. | |
1682 | */ | |
1683 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1684 | handle_t *handle, |
ccd979bd MF |
1685 | struct inode *inode, |
1686 | const char *symname) | |
1687 | { | |
1688 | struct buffer_head **bhs = NULL; | |
1689 | const char *c; | |
1690 | struct super_block *sb = osb->sb; | |
4f902c37 | 1691 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1692 | int virtual, blocks, status, i, bytes_left; |
1693 | ||
1694 | bytes_left = i_size_read(inode) + 1; | |
1695 | /* we can't trust i_blocks because we're actually going to | |
1696 | * write i_size + 1 bytes. */ | |
1697 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1698 | ||
8990e44a TM |
1699 | trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks, |
1700 | i_size_read(inode), blocks); | |
ccd979bd MF |
1701 | |
1702 | /* Sanity check -- make sure we're going to fit. */ | |
1703 | if (bytes_left > | |
1704 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1705 | status = -EIO; | |
1706 | mlog_errno(status); | |
1707 | goto bail; | |
1708 | } | |
1709 | ||
1710 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1711 | if (!bhs) { | |
1712 | status = -ENOMEM; | |
1713 | mlog_errno(status); | |
1714 | goto bail; | |
1715 | } | |
1716 | ||
49cb8d2d MF |
1717 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1718 | NULL); | |
ccd979bd MF |
1719 | if (status < 0) { |
1720 | mlog_errno(status); | |
1721 | goto bail; | |
1722 | } | |
1723 | ||
1724 | /* links can never be larger than one cluster so we know this | |
1725 | * is all going to be contiguous, but do a sanity check | |
1726 | * anyway. */ | |
1727 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1728 | status = -EIO; | |
1729 | mlog_errno(status); | |
1730 | goto bail; | |
1731 | } | |
1732 | ||
1733 | virtual = 0; | |
1734 | while(bytes_left > 0) { | |
1735 | c = &symname[virtual * sb->s_blocksize]; | |
1736 | ||
1737 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1738 | if (!bhs[virtual]) { | |
1739 | status = -ENOMEM; | |
1740 | mlog_errno(status); | |
1741 | goto bail; | |
1742 | } | |
8cb471e8 JB |
1743 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
1744 | bhs[virtual]); | |
ccd979bd | 1745 | |
0cf2f763 JB |
1746 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
1747 | bhs[virtual], | |
ccd979bd MF |
1748 | OCFS2_JOURNAL_ACCESS_CREATE); |
1749 | if (status < 0) { | |
1750 | mlog_errno(status); | |
1751 | goto bail; | |
1752 | } | |
1753 | ||
1754 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1755 | ||
1756 | memcpy(bhs[virtual]->b_data, c, | |
1757 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1758 | bytes_left); | |
1759 | ||
ec20cec7 | 1760 | ocfs2_journal_dirty(handle, bhs[virtual]); |
ccd979bd MF |
1761 | |
1762 | virtual++; | |
1763 | p_blkno++; | |
1764 | bytes_left -= sb->s_blocksize; | |
1765 | } | |
1766 | ||
1767 | status = 0; | |
1768 | bail: | |
1769 | ||
1770 | if (bhs) { | |
1771 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1772 | brelse(bhs[i]); |
ccd979bd MF |
1773 | kfree(bhs); |
1774 | } | |
1775 | ||
c1e8d35e TM |
1776 | if (status) |
1777 | mlog_errno(status); | |
ccd979bd MF |
1778 | return status; |
1779 | } | |
1780 | ||
1781 | static int ocfs2_symlink(struct inode *dir, | |
1782 | struct dentry *dentry, | |
1783 | const char *symname) | |
1784 | { | |
1785 | int status, l, credits; | |
1786 | u64 newsize; | |
1787 | struct ocfs2_super *osb = NULL; | |
1788 | struct inode *inode = NULL; | |
1789 | struct super_block *sb; | |
1790 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1791 | struct buffer_head *parent_fe_bh = NULL; |
1792 | struct ocfs2_dinode *fe = NULL; | |
1793 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1794 | handle_t *handle = NULL; |
ccd979bd MF |
1795 | struct ocfs2_alloc_context *inode_ac = NULL; |
1796 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1797 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1798 | int want_clusters = 0; | |
1799 | int xattr_credits = 0; | |
1800 | struct ocfs2_security_xattr_info si = { | |
1801 | .enable = 1, | |
1802 | }; | |
a90714c1 | 1803 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1804 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
1805 | sigset_t oldset; |
1806 | int did_block_signals = 0; | |
595297a8 | 1807 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 1808 | |
8990e44a TM |
1809 | trace_ocfs2_symlink_begin(dir, dentry, symname, |
1810 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 1811 | |
9c89fe0a JK |
1812 | status = dquot_initialize(dir); |
1813 | if (status) { | |
1814 | mlog_errno(status); | |
1815 | goto bail; | |
1816 | } | |
907f4554 | 1817 | |
ccd979bd MF |
1818 | sb = dir->i_sb; |
1819 | osb = OCFS2_SB(sb); | |
1820 | ||
1821 | l = strlen(symname) + 1; | |
1822 | ||
1823 | credits = ocfs2_calc_symlink_credits(sb); | |
1824 | ||
ccd979bd | 1825 | /* lock the parent directory */ |
e63aecb6 | 1826 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1827 | if (status < 0) { |
1828 | if (status != -ENOENT) | |
1829 | mlog_errno(status); | |
6d8fc40e | 1830 | return status; |
ccd979bd MF |
1831 | } |
1832 | ||
1833 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
198a1ca3 | 1834 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
1835 | /* can't make a file in a deleted directory. */ |
1836 | status = -ENOENT; | |
1837 | goto bail; | |
1838 | } | |
1839 | ||
1840 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1841 | dentry->d_name.len); | |
1842 | if (status) | |
1843 | goto bail; | |
1844 | ||
1845 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1846 | dentry->d_name.name, | |
4a12ca3a | 1847 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1848 | if (status < 0) { |
1849 | mlog_errno(status); | |
1850 | goto bail; | |
1851 | } | |
1852 | ||
da5cbf2f | 1853 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1854 | if (status < 0) { |
1855 | if (status != -ENOSPC) | |
1856 | mlog_errno(status); | |
1857 | goto bail; | |
1858 | } | |
1859 | ||
f5d36202 | 1860 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
9c89fe0a JK |
1861 | if (IS_ERR(inode)) { |
1862 | status = PTR_ERR(inode); | |
1863 | inode = NULL; | |
f5d36202 TY |
1864 | mlog_errno(status); |
1865 | goto bail; | |
1866 | } | |
1867 | ||
534eaddd | 1868 | /* get security xattr */ |
2a7dba39 | 1869 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
1870 | if (status) { |
1871 | if (status == -EOPNOTSUPP) | |
1872 | si.enable = 0; | |
1873 | else { | |
1874 | mlog_errno(status); | |
1875 | goto bail; | |
1876 | } | |
1877 | } | |
1878 | ||
1879 | /* calculate meta data/clusters for setting security xattr */ | |
1880 | if (si.enable) { | |
1881 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1882 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1883 | if (status < 0) { |
534eaddd | 1884 | mlog_errno(status); |
ccd979bd MF |
1885 | goto bail; |
1886 | } | |
1887 | } | |
1888 | ||
534eaddd TY |
1889 | /* don't reserve bitmap space for fast symlinks. */ |
1890 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1891 | want_clusters += 1; | |
1892 | ||
1893 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1894 | if (status < 0) { | |
1895 | if (status != -ENOSPC) | |
1896 | mlog_errno(status); | |
1897 | goto bail; | |
1898 | } | |
1899 | ||
1900 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1901 | if (IS_ERR(handle)) { |
1902 | status = PTR_ERR(handle); | |
1903 | handle = NULL; | |
1904 | mlog_errno(status); | |
1905 | goto bail; | |
1906 | } | |
1907 | ||
547ba7c8 JB |
1908 | /* Starting to change things, restart is no longer possible. */ |
1909 | ocfs2_block_signals(&oldset); | |
1910 | did_block_signals = 1; | |
1911 | ||
63936dda CH |
1912 | status = dquot_alloc_inode(inode); |
1913 | if (status) | |
a90714c1 | 1914 | goto bail; |
a90714c1 JK |
1915 | did_quota_inode = 1; |
1916 | ||
8990e44a TM |
1917 | trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len, |
1918 | dentry->d_name.name, | |
1919 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
1920 | inode->i_mode); | |
19bd341f TM |
1921 | |
1922 | status = ocfs2_mknod_locked(osb, dir, inode, | |
f5d36202 TY |
1923 | 0, &new_fe_bh, parent_fe_bh, handle, |
1924 | inode_ac); | |
ccd979bd MF |
1925 | if (status < 0) { |
1926 | mlog_errno(status); | |
1927 | goto bail; | |
1928 | } | |
1929 | ||
1930 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1931 | inode->i_rdev = 0; | |
1932 | newsize = l - 1; | |
ea022dfb | 1933 | inode->i_op = &ocfs2_symlink_inode_operations; |
21fc61c7 | 1934 | inode_nohighmem(inode); |
ccd979bd | 1935 | if (l > ocfs2_fast_symlink_chars(sb)) { |
dcd0538f MF |
1936 | u32 offset = 0; |
1937 | ||
5dd4056d CH |
1938 | status = dquot_alloc_space_nodirty(inode, |
1939 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1940 | if (status) | |
a90714c1 | 1941 | goto bail; |
a90714c1 | 1942 | did_quota = 1; |
ea022dfb | 1943 | inode->i_mapping->a_ops = &ocfs2_aops; |
0eb8d47e TM |
1944 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1945 | new_fe_bh, | |
1946 | handle, data_ac, NULL, | |
1947 | NULL); | |
ccd979bd MF |
1948 | if (status < 0) { |
1949 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1950 | mlog(ML_ERROR, |
1951 | "Failed to extend file to %llu\n", | |
1952 | (unsigned long long)newsize); | |
ccd979bd MF |
1953 | mlog_errno(status); |
1954 | status = -ENOSPC; | |
1955 | } | |
1956 | goto bail; | |
1957 | } | |
1958 | i_size_write(inode, newsize); | |
8110b073 | 1959 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd | 1960 | } else { |
ea022dfb | 1961 | inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops; |
ccd979bd MF |
1962 | memcpy((char *) fe->id2.i_symlink, symname, l); |
1963 | i_size_write(inode, newsize); | |
1964 | inode->i_blocks = 0; | |
1965 | } | |
1966 | ||
1967 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1968 | if (status < 0) { | |
1969 | mlog_errno(status); | |
1970 | goto bail; | |
1971 | } | |
1972 | ||
1973 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
1974 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
1975 | symname); | |
1976 | if (status < 0) { | |
1977 | mlog_errno(status); | |
1978 | goto bail; | |
1979 | } | |
1980 | } | |
1981 | ||
534eaddd TY |
1982 | if (si.enable) { |
1983 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
1984 | xattr_ac, data_ac); | |
1985 | if (status < 0) { | |
1986 | mlog_errno(status); | |
1987 | goto bail; | |
1988 | } | |
1989 | } | |
1990 | ||
a9743fcd MF |
1991 | /* |
1992 | * Do this before adding the entry to the directory. We add | |
1993 | * also set d_op after success so that ->d_iput() will cleanup | |
1994 | * the dentry lock even if ocfs2_add_entry() fails below. | |
1995 | */ | |
1996 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); | |
1997 | if (status) { | |
ccd979bd MF |
1998 | mlog_errno(status); |
1999 | goto bail; | |
2000 | } | |
2001 | ||
595297a8 | 2002 | dl = dentry->d_fsdata; |
2003 | ||
a9743fcd MF |
2004 | status = ocfs2_add_entry(handle, dentry, inode, |
2005 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
2006 | &lookup); | |
2007 | if (status < 0) { | |
379dfe9d MF |
2008 | mlog_errno(status); |
2009 | goto bail; | |
2010 | } | |
2011 | ||
ccd979bd | 2012 | insert_inode_hash(inode); |
ccd979bd MF |
2013 | d_instantiate(dentry, inode); |
2014 | bail: | |
a90714c1 | 2015 | if (status < 0 && did_quota) |
5dd4056d | 2016 | dquot_free_space_nodirty(inode, |
a90714c1 JK |
2017 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
2018 | if (status < 0 && did_quota_inode) | |
63936dda | 2019 | dquot_free_inode(inode); |
ccd979bd | 2020 | if (handle) |
02dc1af4 | 2021 | ocfs2_commit_trans(osb, handle); |
6d8fc40e | 2022 | |
e63aecb6 | 2023 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
2024 | if (did_block_signals) |
2025 | ocfs2_unblock_signals(&oldset); | |
6d8fc40e | 2026 | |
a81cb88b MF |
2027 | brelse(new_fe_bh); |
2028 | brelse(parent_fe_bh); | |
534eaddd | 2029 | kfree(si.value); |
4a12ca3a | 2030 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
2031 | if (inode_ac) |
2032 | ocfs2_free_alloc_context(inode_ac); | |
2033 | if (data_ac) | |
2034 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
2035 | if (xattr_ac) |
2036 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 | 2037 | if ((status < 0) && inode) { |
595297a8 | 2038 | if (dl) |
2039 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
2040 | ||
ab41fdc8 | 2041 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
f5d36202 | 2042 | clear_nlink(inode); |
ccd979bd | 2043 | iput(inode); |
f5d36202 | 2044 | } |
ccd979bd | 2045 | |
c1e8d35e TM |
2046 | if (status) |
2047 | mlog_errno(status); | |
ccd979bd MF |
2048 | |
2049 | return status; | |
2050 | } | |
2051 | ||
ccd979bd MF |
2052 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
2053 | { | |
2054 | int status, namelen; | |
2055 | ||
b0697053 MF |
2056 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
2057 | (long long)blkno); | |
ccd979bd MF |
2058 | if (namelen <= 0) { |
2059 | if (namelen) | |
2060 | status = namelen; | |
2061 | else | |
2062 | status = -EINVAL; | |
2063 | mlog_errno(status); | |
2064 | goto bail; | |
2065 | } | |
2066 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
2067 | status = -EINVAL; | |
2068 | mlog_errno(status); | |
2069 | goto bail; | |
2070 | } | |
2071 | ||
8990e44a | 2072 | trace_ocfs2_blkno_stringify(blkno, name, namelen); |
ccd979bd MF |
2073 | |
2074 | status = 0; | |
2075 | bail: | |
c1e8d35e TM |
2076 | if (status < 0) |
2077 | mlog_errno(status); | |
ccd979bd MF |
2078 | return status; |
2079 | } | |
2080 | ||
dd43bcde MF |
2081 | static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb, |
2082 | struct inode **ret_orphan_dir, | |
2083 | struct buffer_head **ret_orphan_dir_bh) | |
ccd979bd | 2084 | { |
5098c27b | 2085 | struct inode *orphan_dir_inode; |
ccd979bd | 2086 | struct buffer_head *orphan_dir_bh = NULL; |
dd43bcde | 2087 | int ret = 0; |
ccd979bd MF |
2088 | |
2089 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2090 | ORPHAN_DIR_SYSTEM_INODE, | |
2091 | osb->slot_num); | |
2092 | if (!orphan_dir_inode) { | |
dd43bcde MF |
2093 | ret = -ENOENT; |
2094 | mlog_errno(ret); | |
2095 | return ret; | |
ccd979bd MF |
2096 | } |
2097 | ||
5955102c | 2098 | inode_lock(orphan_dir_inode); |
5098c27b | 2099 | |
dd43bcde MF |
2100 | ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2101 | if (ret < 0) { | |
5955102c | 2102 | inode_unlock(orphan_dir_inode); |
dd43bcde MF |
2103 | iput(orphan_dir_inode); |
2104 | ||
2105 | mlog_errno(ret); | |
2106 | return ret; | |
ccd979bd MF |
2107 | } |
2108 | ||
dd43bcde MF |
2109 | *ret_orphan_dir = orphan_dir_inode; |
2110 | *ret_orphan_dir_bh = orphan_dir_bh; | |
5098c27b | 2111 | |
dd43bcde MF |
2112 | return 0; |
2113 | } | |
2114 | ||
2115 | static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode, | |
2116 | struct buffer_head *orphan_dir_bh, | |
2117 | u64 blkno, | |
2118 | char *name, | |
06ee5c75 JQ |
2119 | struct ocfs2_dir_lookup_result *lookup, |
2120 | bool dio) | |
dd43bcde MF |
2121 | { |
2122 | int ret; | |
2123 | struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb); | |
06ee5c75 JQ |
2124 | int namelen = dio ? |
2125 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2126 | OCFS2_ORPHAN_NAMELEN; | |
2127 | ||
2128 | if (dio) { | |
2129 | ret = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2130 | OCFS2_DIO_ORPHAN_PREFIX); | |
2131 | if (ret != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2132 | ret = -EINVAL; | |
2133 | mlog_errno(ret); | |
2134 | return ret; | |
2135 | } | |
dd43bcde | 2136 | |
06ee5c75 JQ |
2137 | ret = ocfs2_blkno_stringify(blkno, |
2138 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2139 | } else | |
2140 | ret = ocfs2_blkno_stringify(blkno, name); | |
dd43bcde MF |
2141 | if (ret < 0) { |
2142 | mlog_errno(ret); | |
2143 | return ret; | |
2144 | } | |
2145 | ||
2146 | ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
2147 | orphan_dir_bh, name, | |
06ee5c75 | 2148 | namelen, lookup); |
dd43bcde MF |
2149 | if (ret < 0) { |
2150 | mlog_errno(ret); | |
2151 | return ret; | |
2152 | } | |
2153 | ||
2154 | return 0; | |
2155 | } | |
2156 | ||
2157 | /** | |
2158 | * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for | |
2159 | * insertion of an orphan. | |
2160 | * @osb: ocfs2 file system | |
2161 | * @ret_orphan_dir: Orphan dir inode - returned locked! | |
2162 | * @blkno: Actual block number of the inode to be inserted into orphan dir. | |
2163 | * @lookup: dir lookup result, to be passed back into functions like | |
2164 | * ocfs2_orphan_add | |
2165 | * | |
2166 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2167 | * fields will be populated. | |
2168 | * | |
2169 | * Returns non-zero on failure. | |
2170 | */ | |
2171 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
2172 | struct inode **ret_orphan_dir, | |
2173 | u64 blkno, | |
2174 | char *name, | |
06ee5c75 JQ |
2175 | struct ocfs2_dir_lookup_result *lookup, |
2176 | bool dio) | |
dd43bcde MF |
2177 | { |
2178 | struct inode *orphan_dir_inode = NULL; | |
2179 | struct buffer_head *orphan_dir_bh = NULL; | |
2180 | int ret = 0; | |
2181 | ||
2182 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode, | |
2183 | &orphan_dir_bh); | |
2184 | if (ret < 0) { | |
2185 | mlog_errno(ret); | |
2186 | return ret; | |
2187 | } | |
2188 | ||
2189 | ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh, | |
06ee5c75 | 2190 | blkno, name, lookup, dio); |
dd43bcde MF |
2191 | if (ret < 0) { |
2192 | mlog_errno(ret); | |
2193 | goto out; | |
ccd979bd MF |
2194 | } |
2195 | ||
5098c27b MF |
2196 | *ret_orphan_dir = orphan_dir_inode; |
2197 | ||
dd43bcde MF |
2198 | out: |
2199 | brelse(orphan_dir_bh); | |
2200 | ||
2201 | if (ret) { | |
2202 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2203 | inode_unlock(orphan_dir_inode); |
ccd979bd | 2204 | iput(orphan_dir_inode); |
5098c27b | 2205 | } |
ccd979bd | 2206 | |
c1e8d35e TM |
2207 | if (ret) |
2208 | mlog_errno(ret); | |
dd43bcde | 2209 | return ret; |
ccd979bd MF |
2210 | } |
2211 | ||
2212 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 2213 | handle_t *handle, |
ccd979bd | 2214 | struct inode *inode, |
3939fda4 | 2215 | struct buffer_head *fe_bh, |
ccd979bd | 2216 | char *name, |
4a12ca3a | 2217 | struct ocfs2_dir_lookup_result *lookup, |
06ee5c75 JQ |
2218 | struct inode *orphan_dir_inode, |
2219 | bool dio) | |
ccd979bd | 2220 | { |
ccd979bd MF |
2221 | struct buffer_head *orphan_dir_bh = NULL; |
2222 | int status = 0; | |
2223 | struct ocfs2_dinode *orphan_fe; | |
3939fda4 | 2224 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; |
06ee5c75 JQ |
2225 | int namelen = dio ? |
2226 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2227 | OCFS2_ORPHAN_NAMELEN; | |
ccd979bd | 2228 | |
8990e44a TM |
2229 | trace_ocfs2_orphan_add_begin( |
2230 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 2231 | |
b657c95c | 2232 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
2233 | if (status < 0) { |
2234 | mlog_errno(status); | |
2235 | goto leave; | |
2236 | } | |
2237 | ||
0cf2f763 JB |
2238 | status = ocfs2_journal_access_di(handle, |
2239 | INODE_CACHE(orphan_dir_inode), | |
2240 | orphan_dir_bh, | |
13723d00 | 2241 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2242 | if (status < 0) { |
2243 | mlog_errno(status); | |
2244 | goto leave; | |
2245 | } | |
2246 | ||
ea45466a YL |
2247 | /* |
2248 | * We're going to journal the change of i_flags and i_orphaned_slot. | |
2249 | * It's safe anyway, though some callers may duplicate the journaling. | |
2250 | * Journaling within the func just make the logic look more | |
2251 | * straightforward. | |
2252 | */ | |
2253 | status = ocfs2_journal_access_di(handle, | |
2254 | INODE_CACHE(inode), | |
2255 | fe_bh, | |
2256 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2257 | if (status < 0) { | |
2258 | mlog_errno(status); | |
2259 | goto leave; | |
2260 | } | |
2261 | ||
ccd979bd MF |
2262 | /* we're a cluster, and nlink can change on disk from |
2263 | * underneath us... */ | |
2264 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2265 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2266 | ocfs2_add_links_count(orphan_fe, 1); |
bfe86848 | 2267 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2268 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2269 | |
2270 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
06ee5c75 | 2271 | namelen, inode, |
ccd979bd | 2272 | OCFS2_I(inode)->ip_blkno, |
4a12ca3a | 2273 | orphan_dir_bh, lookup); |
ccd979bd MF |
2274 | if (status < 0) { |
2275 | mlog_errno(status); | |
ea45466a | 2276 | goto rollback; |
3939fda4 TY |
2277 | } |
2278 | ||
06ee5c75 JQ |
2279 | if (dio) { |
2280 | /* Update flag OCFS2_DIO_ORPHANED_FL and record the orphan | |
2281 | * slot. | |
2282 | */ | |
2283 | fe->i_flags |= cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2284 | fe->i_dio_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2285 | } else { | |
2286 | fe->i_flags |= cpu_to_le32(OCFS2_ORPHANED_FL); | |
2287 | OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR; | |
ccd979bd | 2288 | |
06ee5c75 JQ |
2289 | /* Record which orphan dir our inode now resides |
2290 | * in. delete_inode will use this to determine which orphan | |
2291 | * dir to lock. */ | |
2292 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2293 | } | |
ccd979bd | 2294 | |
3939fda4 TY |
2295 | ocfs2_journal_dirty(handle, fe_bh); |
2296 | ||
8990e44a TM |
2297 | trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno, |
2298 | osb->slot_num); | |
ccd979bd | 2299 | |
ea45466a YL |
2300 | rollback: |
2301 | if (status < 0) { | |
2302 | if (S_ISDIR(inode->i_mode)) | |
2303 | ocfs2_add_links_count(orphan_fe, -1); | |
2304 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); | |
2305 | } | |
2306 | ||
ccd979bd | 2307 | leave: |
a81cb88b | 2308 | brelse(orphan_dir_bh); |
ccd979bd | 2309 | |
ccd979bd MF |
2310 | return status; |
2311 | } | |
2312 | ||
2313 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
2314 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 2315 | handle_t *handle, |
ccd979bd MF |
2316 | struct inode *orphan_dir_inode, |
2317 | struct inode *inode, | |
06ee5c75 JQ |
2318 | struct buffer_head *orphan_dir_bh, |
2319 | bool dio) | |
ccd979bd | 2320 | { |
64202a21 | 2321 | char name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1]; |
ccd979bd MF |
2322 | struct ocfs2_dinode *orphan_fe; |
2323 | int status = 0; | |
4a12ca3a | 2324 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd | 2325 | |
06ee5c75 JQ |
2326 | if (dio) { |
2327 | status = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2328 | OCFS2_DIO_ORPHAN_PREFIX); | |
2329 | if (status != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2330 | status = -EINVAL; | |
2331 | mlog_errno(status); | |
2332 | return status; | |
2333 | } | |
2334 | ||
2335 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, | |
2336 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2337 | } else | |
2338 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
ccd979bd MF |
2339 | if (status < 0) { |
2340 | mlog_errno(status); | |
2341 | goto leave; | |
2342 | } | |
2343 | ||
8990e44a TM |
2344 | trace_ocfs2_orphan_del( |
2345 | (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
e38a5739 | 2346 | name, strlen(name)); |
ccd979bd | 2347 | |
074a6c65 JQ |
2348 | status = ocfs2_journal_access_di(handle, |
2349 | INODE_CACHE(orphan_dir_inode), | |
2350 | orphan_dir_bh, | |
2351 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2352 | if (status < 0) { | |
2353 | mlog_errno(status); | |
2354 | goto leave; | |
2355 | } | |
2356 | ||
ccd979bd | 2357 | /* find it's spot in the orphan directory */ |
e38a5739 | 2358 | status = ocfs2_find_entry(name, strlen(name), orphan_dir_inode, |
4a12ca3a MF |
2359 | &lookup); |
2360 | if (status) { | |
ccd979bd MF |
2361 | mlog_errno(status); |
2362 | goto leave; | |
2363 | } | |
2364 | ||
2365 | /* remove it from the orphan directory */ | |
4a12ca3a | 2366 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
2367 | if (status < 0) { |
2368 | mlog_errno(status); | |
2369 | goto leave; | |
2370 | } | |
2371 | ||
ccd979bd MF |
2372 | /* do the i_nlink dance! :) */ |
2373 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2374 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2375 | ocfs2_add_links_count(orphan_fe, -1); |
bfe86848 | 2376 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2377 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2378 | |
2379 | leave: | |
4a12ca3a | 2380 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd | 2381 | |
c1e8d35e TM |
2382 | if (status) |
2383 | mlog_errno(status); | |
ccd979bd MF |
2384 | return status; |
2385 | } | |
2386 | ||
97b8f4a9 | 2387 | /** |
25985edc | 2388 | * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to receive a newly |
97b8f4a9 MF |
2389 | * allocated file. This is different from the typical 'add to orphan dir' |
2390 | * operation in that the inode does not yet exist. This is a problem because | |
2391 | * the orphan dir stringifies the inode block number to come up with it's | |
2392 | * dirent. Obviously if the inode does not yet exist we have a chicken and egg | |
2393 | * problem. This function works around it by calling deeper into the orphan | |
2394 | * and suballoc code than other callers. Use this only by necessity. | |
2395 | * @dir: The directory which this inode will ultimately wind up under - not the | |
2396 | * orphan dir! | |
2397 | * @dir_bh: buffer_head the @dir inode block | |
2398 | * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled | |
2399 | * with the string to be used for orphan dirent. Pass back to the orphan dir | |
2400 | * code. | |
2401 | * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan | |
2402 | * dir code. | |
2403 | * @ret_di_blkno: block number where the new inode will be allocated. | |
2404 | * @orphan_insert: Dir insert context to be passed back into orphan dir code. | |
2405 | * @ret_inode_ac: Inode alloc context to be passed back to the allocator. | |
2406 | * | |
2407 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2408 | * fields will be populated. | |
2409 | * | |
2410 | * Returns non-zero on failure. | |
2411 | */ | |
2412 | static int ocfs2_prep_new_orphaned_file(struct inode *dir, | |
2413 | struct buffer_head *dir_bh, | |
2414 | char *orphan_name, | |
2415 | struct inode **ret_orphan_dir, | |
2416 | u64 *ret_di_blkno, | |
2417 | struct ocfs2_dir_lookup_result *orphan_insert, | |
2418 | struct ocfs2_alloc_context **ret_inode_ac) | |
2419 | { | |
2420 | int ret; | |
2421 | u64 di_blkno; | |
2422 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2423 | struct inode *orphan_dir = NULL; | |
2424 | struct buffer_head *orphan_dir_bh = NULL; | |
2425 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2426 | ||
2427 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh); | |
2428 | if (ret < 0) { | |
2429 | mlog_errno(ret); | |
2430 | return ret; | |
2431 | } | |
2432 | ||
2433 | /* reserve an inode spot */ | |
2434 | ret = ocfs2_reserve_new_inode(osb, &inode_ac); | |
2435 | if (ret < 0) { | |
2436 | if (ret != -ENOSPC) | |
2437 | mlog_errno(ret); | |
2438 | goto out; | |
2439 | } | |
2440 | ||
2441 | ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac, | |
2442 | &di_blkno); | |
2443 | if (ret) { | |
2444 | mlog_errno(ret); | |
2445 | goto out; | |
2446 | } | |
2447 | ||
2448 | ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh, | |
06ee5c75 JQ |
2449 | di_blkno, orphan_name, orphan_insert, |
2450 | false); | |
97b8f4a9 MF |
2451 | if (ret < 0) { |
2452 | mlog_errno(ret); | |
2453 | goto out; | |
2454 | } | |
2455 | ||
2456 | out: | |
2457 | if (ret == 0) { | |
2458 | *ret_orphan_dir = orphan_dir; | |
2459 | *ret_di_blkno = di_blkno; | |
2460 | *ret_inode_ac = inode_ac; | |
2461 | /* | |
2462 | * orphan_name and orphan_insert are already up to | |
2463 | * date via prepare_orphan_dir | |
2464 | */ | |
2465 | } else { | |
2466 | /* Unroll reserve_new_inode* */ | |
2467 | if (inode_ac) | |
2468 | ocfs2_free_alloc_context(inode_ac); | |
2469 | ||
2470 | /* Unroll orphan dir locking */ | |
5955102c | 2471 | inode_unlock(orphan_dir); |
97b8f4a9 MF |
2472 | ocfs2_inode_unlock(orphan_dir, 1); |
2473 | iput(orphan_dir); | |
2474 | } | |
2475 | ||
2476 | brelse(orphan_dir_bh); | |
2477 | ||
7869e590 | 2478 | return ret; |
97b8f4a9 MF |
2479 | } |
2480 | ||
bc13d347 TM |
2481 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
2482 | int mode, | |
2483 | struct inode **new_inode) | |
2484 | { | |
2485 | int status, did_quota_inode = 0; | |
2486 | struct inode *inode = NULL; | |
2487 | struct inode *orphan_dir = NULL; | |
2488 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
bc13d347 TM |
2489 | handle_t *handle = NULL; |
2490 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2491 | struct buffer_head *parent_di_bh = NULL; | |
2492 | struct buffer_head *new_di_bh = NULL; | |
2493 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2494 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
97b8f4a9 MF |
2495 | u64 uninitialized_var(di_blkno), suballoc_loc; |
2496 | u16 suballoc_bit; | |
bc13d347 TM |
2497 | |
2498 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2499 | if (status < 0) { | |
2500 | if (status != -ENOENT) | |
2501 | mlog_errno(status); | |
2502 | return status; | |
2503 | } | |
2504 | ||
97b8f4a9 MF |
2505 | status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh, |
2506 | orphan_name, &orphan_dir, | |
2507 | &di_blkno, &orphan_insert, &inode_ac); | |
bc13d347 TM |
2508 | if (status < 0) { |
2509 | if (status != -ENOSPC) | |
2510 | mlog_errno(status); | |
2511 | goto leave; | |
2512 | } | |
2513 | ||
2514 | inode = ocfs2_get_init_inode(dir, mode); | |
9c89fe0a JK |
2515 | if (IS_ERR(inode)) { |
2516 | status = PTR_ERR(inode); | |
2517 | inode = NULL; | |
bc13d347 TM |
2518 | mlog_errno(status); |
2519 | goto leave; | |
2520 | } | |
2521 | ||
2522 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); | |
2523 | if (IS_ERR(handle)) { | |
2524 | status = PTR_ERR(handle); | |
2525 | handle = NULL; | |
2526 | mlog_errno(status); | |
2527 | goto leave; | |
2528 | } | |
2529 | ||
63936dda CH |
2530 | status = dquot_alloc_inode(inode); |
2531 | if (status) | |
bc13d347 | 2532 | goto leave; |
bc13d347 TM |
2533 | did_quota_inode = 1; |
2534 | ||
97b8f4a9 MF |
2535 | status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac, |
2536 | &suballoc_loc, | |
2537 | &suballoc_bit, di_blkno); | |
bc13d347 TM |
2538 | if (status < 0) { |
2539 | mlog_errno(status); | |
2540 | goto leave; | |
2541 | } | |
2542 | ||
6d6b77f1 | 2543 | clear_nlink(inode); |
97b8f4a9 MF |
2544 | /* do the real work now. */ |
2545 | status = __ocfs2_mknod_locked(dir, inode, | |
2546 | 0, &new_di_bh, parent_di_bh, handle, | |
2547 | inode_ac, di_blkno, suballoc_loc, | |
2548 | suballoc_bit); | |
bc13d347 TM |
2549 | if (status < 0) { |
2550 | mlog_errno(status); | |
2551 | goto leave; | |
2552 | } | |
2553 | ||
3939fda4 | 2554 | status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name, |
06ee5c75 | 2555 | &orphan_insert, orphan_dir, false); |
bc13d347 TM |
2556 | if (status < 0) { |
2557 | mlog_errno(status); | |
2558 | goto leave; | |
2559 | } | |
2560 | ||
2561 | /* get open lock so that only nodes can't remove it from orphan dir. */ | |
2562 | status = ocfs2_open_lock(inode); | |
2563 | if (status < 0) | |
2564 | mlog_errno(status); | |
2565 | ||
c7d260af | 2566 | insert_inode_hash(inode); |
bc13d347 TM |
2567 | leave: |
2568 | if (status < 0 && did_quota_inode) | |
63936dda | 2569 | dquot_free_inode(inode); |
bc13d347 TM |
2570 | if (handle) |
2571 | ocfs2_commit_trans(osb, handle); | |
2572 | ||
2573 | if (orphan_dir) { | |
2574 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
2575 | ocfs2_inode_unlock(orphan_dir, 1); | |
5955102c | 2576 | inode_unlock(orphan_dir); |
bc13d347 TM |
2577 | iput(orphan_dir); |
2578 | } | |
2579 | ||
bc13d347 TM |
2580 | if ((status < 0) && inode) { |
2581 | clear_nlink(inode); | |
2582 | iput(inode); | |
2583 | } | |
2584 | ||
2585 | if (inode_ac) | |
2586 | ocfs2_free_alloc_context(inode_ac); | |
2587 | ||
2588 | brelse(new_di_bh); | |
2589 | ||
2590 | if (!status) | |
2591 | *new_inode = inode; | |
2592 | ||
2593 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2594 | ||
2595 | ocfs2_inode_unlock(dir, 1); | |
2596 | brelse(parent_di_bh); | |
2597 | return status; | |
2598 | } | |
2599 | ||
06ee5c75 JQ |
2600 | int ocfs2_add_inode_to_orphan(struct ocfs2_super *osb, |
2601 | struct inode *inode) | |
2602 | { | |
2603 | char orphan_name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1]; | |
2604 | struct inode *orphan_dir_inode = NULL; | |
2605 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
2606 | struct buffer_head *di_bh = NULL; | |
2607 | int status = 0; | |
2608 | handle_t *handle = NULL; | |
4813962b | 2609 | struct ocfs2_dinode *di = NULL; |
06ee5c75 JQ |
2610 | |
2611 | status = ocfs2_inode_lock(inode, &di_bh, 1); | |
2612 | if (status < 0) { | |
2613 | mlog_errno(status); | |
2614 | goto bail; | |
2615 | } | |
2616 | ||
4813962b JQ |
2617 | di = (struct ocfs2_dinode *) di_bh->b_data; |
2618 | /* | |
2619 | * Another append dio crashed? | |
512f62ac | 2620 | * If so, manually recover it first. |
4813962b JQ |
2621 | */ |
2622 | if (unlikely(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))) { | |
512f62ac JQ |
2623 | status = ocfs2_truncate_file(inode, di_bh, i_size_read(inode)); |
2624 | if (status < 0) { | |
2625 | if (status != -ENOSPC) | |
2626 | mlog_errno(status); | |
2627 | goto bail_unlock_inode; | |
2628 | } | |
2629 | ||
2630 | status = ocfs2_del_inode_from_orphan(osb, inode, di_bh, 0, 0); | |
2631 | if (status < 0) { | |
2632 | mlog_errno(status); | |
2633 | goto bail_unlock_inode; | |
2634 | } | |
4813962b JQ |
2635 | } |
2636 | ||
06ee5c75 JQ |
2637 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir_inode, |
2638 | OCFS2_I(inode)->ip_blkno, | |
2639 | orphan_name, | |
2640 | &orphan_insert, | |
2641 | true); | |
2642 | if (status < 0) { | |
2643 | mlog_errno(status); | |
2644 | goto bail_unlock_inode; | |
2645 | } | |
2646 | ||
2647 | handle = ocfs2_start_trans(osb, | |
2648 | OCFS2_INODE_ADD_TO_ORPHAN_CREDITS); | |
2649 | if (IS_ERR(handle)) { | |
2650 | status = PTR_ERR(handle); | |
2651 | goto bail_unlock_orphan; | |
2652 | } | |
2653 | ||
2654 | status = ocfs2_orphan_add(osb, handle, inode, di_bh, orphan_name, | |
2655 | &orphan_insert, orphan_dir_inode, true); | |
2656 | if (status) | |
2657 | mlog_errno(status); | |
2658 | ||
2659 | ocfs2_commit_trans(osb, handle); | |
2660 | ||
2661 | bail_unlock_orphan: | |
2662 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2663 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2664 | iput(orphan_dir_inode); |
2665 | ||
2666 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2667 | ||
2668 | bail_unlock_inode: | |
2669 | ocfs2_inode_unlock(inode, 1); | |
2670 | brelse(di_bh); | |
2671 | ||
2672 | bail: | |
2673 | return status; | |
2674 | } | |
2675 | ||
2676 | int ocfs2_del_inode_from_orphan(struct ocfs2_super *osb, | |
cf1776a9 JQ |
2677 | struct inode *inode, struct buffer_head *di_bh, |
2678 | int update_isize, loff_t end) | |
06ee5c75 JQ |
2679 | { |
2680 | struct inode *orphan_dir_inode = NULL; | |
2681 | struct buffer_head *orphan_dir_bh = NULL; | |
cf1776a9 | 2682 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data; |
06ee5c75 JQ |
2683 | handle_t *handle = NULL; |
2684 | int status = 0; | |
2685 | ||
06ee5c75 JQ |
2686 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
2687 | ORPHAN_DIR_SYSTEM_INODE, | |
2688 | le16_to_cpu(di->i_dio_orphaned_slot)); | |
2689 | if (!orphan_dir_inode) { | |
2690 | status = -ENOENT; | |
2691 | mlog_errno(status); | |
cf1776a9 | 2692 | goto bail; |
06ee5c75 JQ |
2693 | } |
2694 | ||
5955102c | 2695 | inode_lock(orphan_dir_inode); |
06ee5c75 JQ |
2696 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2697 | if (status < 0) { | |
5955102c | 2698 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2699 | iput(orphan_dir_inode); |
2700 | mlog_errno(status); | |
cf1776a9 | 2701 | goto bail; |
06ee5c75 JQ |
2702 | } |
2703 | ||
2704 | handle = ocfs2_start_trans(osb, | |
2705 | OCFS2_INODE_DEL_FROM_ORPHAN_CREDITS); | |
2706 | if (IS_ERR(handle)) { | |
2707 | status = PTR_ERR(handle); | |
2708 | goto bail_unlock_orphan; | |
2709 | } | |
2710 | ||
2711 | BUG_ON(!(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))); | |
2712 | ||
2713 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, | |
2714 | inode, orphan_dir_bh, true); | |
2715 | if (status < 0) { | |
2716 | mlog_errno(status); | |
2717 | goto bail_commit; | |
2718 | } | |
2719 | ||
2720 | status = ocfs2_journal_access_di(handle, | |
2721 | INODE_CACHE(inode), | |
2722 | di_bh, | |
2723 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2724 | if (status < 0) { | |
2725 | mlog_errno(status); | |
2726 | goto bail_commit; | |
2727 | } | |
2728 | ||
2729 | di->i_flags &= ~cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2730 | di->i_dio_orphaned_slot = 0; | |
2731 | ||
2732 | if (update_isize) { | |
2733 | status = ocfs2_set_inode_size(handle, inode, di_bh, end); | |
2734 | if (status) | |
2735 | mlog_errno(status); | |
2736 | } else | |
2737 | ocfs2_journal_dirty(handle, di_bh); | |
2738 | ||
2739 | bail_commit: | |
2740 | ocfs2_commit_trans(osb, handle); | |
2741 | ||
2742 | bail_unlock_orphan: | |
2743 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2744 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2745 | brelse(orphan_dir_bh); |
2746 | iput(orphan_dir_inode); | |
2747 | ||
06ee5c75 JQ |
2748 | bail: |
2749 | return status; | |
2750 | } | |
2751 | ||
bc13d347 TM |
2752 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, |
2753 | struct inode *inode, | |
2754 | struct dentry *dentry) | |
2755 | { | |
2756 | int status = 0; | |
2757 | struct buffer_head *parent_di_bh = NULL; | |
2758 | handle_t *handle = NULL; | |
2759 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2760 | struct ocfs2_dinode *dir_di, *di; | |
2761 | struct inode *orphan_dir_inode = NULL; | |
2762 | struct buffer_head *orphan_dir_bh = NULL; | |
2763 | struct buffer_head *di_bh = NULL; | |
2764 | struct ocfs2_dir_lookup_result lookup = { NULL, }; | |
2765 | ||
8990e44a TM |
2766 | trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry, |
2767 | dentry->d_name.len, dentry->d_name.name, | |
2768 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
2769 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
bc13d347 TM |
2770 | |
2771 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2772 | if (status < 0) { | |
2773 | if (status != -ENOENT) | |
2774 | mlog_errno(status); | |
2775 | return status; | |
2776 | } | |
2777 | ||
2778 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; | |
2779 | if (!dir_di->i_links_count) { | |
2780 | /* can't make a file in a deleted directory. */ | |
2781 | status = -ENOENT; | |
2782 | goto leave; | |
2783 | } | |
2784 | ||
2785 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
2786 | dentry->d_name.len); | |
2787 | if (status) | |
2788 | goto leave; | |
2789 | ||
2790 | /* get a spot inside the dir. */ | |
2791 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, | |
2792 | dentry->d_name.name, | |
2793 | dentry->d_name.len, &lookup); | |
2794 | if (status < 0) { | |
2795 | mlog_errno(status); | |
2796 | goto leave; | |
2797 | } | |
2798 | ||
2799 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2800 | ORPHAN_DIR_SYSTEM_INODE, | |
2801 | osb->slot_num); | |
2802 | if (!orphan_dir_inode) { | |
62f8b1f0 | 2803 | status = -ENOENT; |
bc13d347 TM |
2804 | mlog_errno(status); |
2805 | goto leave; | |
2806 | } | |
2807 | ||
5955102c | 2808 | inode_lock(orphan_dir_inode); |
bc13d347 TM |
2809 | |
2810 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2811 | if (status < 0) { | |
2812 | mlog_errno(status); | |
5955102c | 2813 | inode_unlock(orphan_dir_inode); |
bc13d347 TM |
2814 | iput(orphan_dir_inode); |
2815 | goto leave; | |
2816 | } | |
2817 | ||
2818 | status = ocfs2_read_inode_block(inode, &di_bh); | |
2819 | if (status < 0) { | |
2820 | mlog_errno(status); | |
2821 | goto orphan_unlock; | |
2822 | } | |
2823 | ||
2824 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); | |
2825 | if (IS_ERR(handle)) { | |
2826 | status = PTR_ERR(handle); | |
2827 | handle = NULL; | |
2828 | mlog_errno(status); | |
2829 | goto orphan_unlock; | |
2830 | } | |
2831 | ||
2832 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), | |
2833 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2834 | if (status < 0) { | |
2835 | mlog_errno(status); | |
2836 | goto out_commit; | |
2837 | } | |
2838 | ||
2839 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
06ee5c75 | 2840 | orphan_dir_bh, false); |
bc13d347 TM |
2841 | if (status < 0) { |
2842 | mlog_errno(status); | |
2843 | goto out_commit; | |
2844 | } | |
2845 | ||
2846 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
13eb9887 | 2847 | di->i_flags &= ~cpu_to_le32(OCFS2_ORPHANED_FL); |
bc13d347 | 2848 | di->i_orphaned_slot = 0; |
bfe86848 | 2849 | set_nlink(inode, 1); |
10cf1a02 | 2850 | ocfs2_set_links_count(di, inode->i_nlink); |
6fdb702d | 2851 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
bc13d347 TM |
2852 | ocfs2_journal_dirty(handle, di_bh); |
2853 | ||
2854 | status = ocfs2_add_entry(handle, dentry, inode, | |
2855 | OCFS2_I(inode)->ip_blkno, parent_di_bh, | |
2856 | &lookup); | |
2857 | if (status < 0) { | |
2858 | mlog_errno(status); | |
2859 | goto out_commit; | |
2860 | } | |
2861 | ||
2862 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
2863 | OCFS2_I(dir)->ip_blkno); | |
2864 | if (status) { | |
2865 | mlog_errno(status); | |
2866 | goto out_commit; | |
2867 | } | |
2868 | ||
bc13d347 TM |
2869 | d_instantiate(dentry, inode); |
2870 | status = 0; | |
2871 | out_commit: | |
2872 | ocfs2_commit_trans(osb, handle); | |
2873 | orphan_unlock: | |
2874 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2875 | inode_unlock(orphan_dir_inode); |
bc13d347 TM |
2876 | iput(orphan_dir_inode); |
2877 | leave: | |
2878 | ||
2879 | ocfs2_inode_unlock(dir, 1); | |
2880 | ||
2881 | brelse(di_bh); | |
2882 | brelse(parent_di_bh); | |
2883 | brelse(orphan_dir_bh); | |
2884 | ||
2885 | ocfs2_free_dir_lookup_result(&lookup); | |
2886 | ||
c1e8d35e TM |
2887 | if (status) |
2888 | mlog_errno(status); | |
bc13d347 TM |
2889 | |
2890 | return status; | |
2891 | } | |
2892 | ||
92e1d5be | 2893 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2894 | .create = ocfs2_create, |
2895 | .lookup = ocfs2_lookup, | |
2896 | .link = ocfs2_link, | |
2897 | .unlink = ocfs2_unlink, | |
2898 | .rmdir = ocfs2_unlink, | |
2899 | .symlink = ocfs2_symlink, | |
2900 | .mkdir = ocfs2_mkdir, | |
2901 | .mknod = ocfs2_mknod, | |
2902 | .rename = ocfs2_rename, | |
2903 | .setattr = ocfs2_setattr, | |
2904 | .getattr = ocfs2_getattr, | |
d38eb8db | 2905 | .permission = ocfs2_permission, |
cf1d6c76 | 2906 | .listxattr = ocfs2_listxattr, |
55f4946e | 2907 | .fiemap = ocfs2_fiemap, |
4e34e719 | 2908 | .get_acl = ocfs2_iop_get_acl, |
702e5bc6 | 2909 | .set_acl = ocfs2_iop_set_acl, |
ccd979bd | 2910 | }; |