Commit | Line | Data |
---|---|---|
328970de | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
fa60ce2c | 2 | /* |
ccd979bd MF |
3 | * namei.c |
4 | * | |
5 | * Create and rename file, directory, symlinks | |
6 | * | |
7 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
8 | * | |
9 | * Portions of this code from linux/fs/ext3/dir.c | |
10 | * | |
11 | * Copyright (C) 1992, 1993, 1994, 1995 | |
12 | * Remy Card (card@masi.ibp.fr) | |
13 | * Laboratoire MASI - Institut Blaise pascal | |
14 | * Universite Pierre et Marie Curie (Paris VI) | |
15 | * | |
16 | * from | |
17 | * | |
18 | * linux/fs/minix/dir.c | |
19 | * | |
20 | * Copyright (C) 1991, 1992 Linux Torvalds | |
ccd979bd MF |
21 | */ |
22 | ||
23 | #include <linux/fs.h> | |
24 | #include <linux/types.h> | |
25 | #include <linux/slab.h> | |
26 | #include <linux/highmem.h> | |
a90714c1 | 27 | #include <linux/quotaops.h> |
cc56c33e | 28 | #include <linux/iversion.h> |
ccd979bd | 29 | |
ccd979bd MF |
30 | #include <cluster/masklog.h> |
31 | ||
32 | #include "ocfs2.h" | |
33 | ||
34 | #include "alloc.h" | |
35 | #include "dcache.h" | |
36 | #include "dir.h" | |
37 | #include "dlmglue.h" | |
38 | #include "extent_map.h" | |
39 | #include "file.h" | |
40 | #include "inode.h" | |
41 | #include "journal.h" | |
42 | #include "namei.h" | |
43 | #include "suballoc.h" | |
aa958874 | 44 | #include "super.h" |
ccd979bd MF |
45 | #include "symlink.h" |
46 | #include "sysfile.h" | |
47 | #include "uptodate.h" | |
cf1d6c76 | 48 | #include "xattr.h" |
89c38bd0 | 49 | #include "acl.h" |
8990e44a | 50 | #include "ocfs2_trace.h" |
2b5f52c5 | 51 | #include "ioctl.h" |
ccd979bd MF |
52 | |
53 | #include "buffer_head_io.h" | |
54 | ||
ccd979bd MF |
55 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
56 | struct inode *dir, | |
f5d36202 | 57 | struct inode *inode, |
ccd979bd MF |
58 | dev_t dev, |
59 | struct buffer_head **new_fe_bh, | |
60 | struct buffer_head *parent_fe_bh, | |
1fabe148 | 61 | handle_t *handle, |
ccd979bd MF |
62 | struct ocfs2_alloc_context *inode_ac); |
63 | ||
ccd979bd | 64 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, |
5098c27b | 65 | struct inode **ret_orphan_dir, |
19bd341f | 66 | u64 blkno, |
ccd979bd | 67 | char *name, |
06ee5c75 JQ |
68 | struct ocfs2_dir_lookup_result *lookup, |
69 | bool dio); | |
ccd979bd MF |
70 | |
71 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 72 | handle_t *handle, |
ccd979bd | 73 | struct inode *inode, |
3939fda4 | 74 | struct buffer_head *fe_bh, |
ccd979bd | 75 | char *name, |
4a12ca3a | 76 | struct ocfs2_dir_lookup_result *lookup, |
06ee5c75 JQ |
77 | struct inode *orphan_dir_inode, |
78 | bool dio); | |
ccd979bd MF |
79 | |
80 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 81 | handle_t *handle, |
ccd979bd MF |
82 | struct inode *inode, |
83 | const char *symname); | |
84 | ||
53dc20b9 X |
85 | static int ocfs2_double_lock(struct ocfs2_super *osb, |
86 | struct buffer_head **bh1, | |
87 | struct inode *inode1, | |
88 | struct buffer_head **bh2, | |
89 | struct inode *inode2, | |
90 | int rename); | |
91 | ||
92 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2); | |
ccd979bd MF |
93 | /* An orphan dir name is an 8 byte value, printed as a hex string */ |
94 | #define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64))) | |
95 | ||
96 | static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry, | |
00cd8dd3 | 97 | unsigned int flags) |
ccd979bd MF |
98 | { |
99 | int status; | |
100 | u64 blkno; | |
ccd979bd MF |
101 | struct inode *inode = NULL; |
102 | struct dentry *ret; | |
ccd979bd MF |
103 | struct ocfs2_inode_info *oi; |
104 | ||
8990e44a TM |
105 | trace_ocfs2_lookup(dir, dentry, dentry->d_name.len, |
106 | dentry->d_name.name, | |
107 | (unsigned long long)OCFS2_I(dir)->ip_blkno, 0); | |
ccd979bd MF |
108 | |
109 | if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) { | |
110 | ret = ERR_PTR(-ENAMETOOLONG); | |
111 | goto bail; | |
112 | } | |
113 | ||
cb25797d | 114 | status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT); |
ccd979bd MF |
115 | if (status < 0) { |
116 | if (status != -ENOENT) | |
117 | mlog_errno(status); | |
118 | ret = ERR_PTR(status); | |
119 | goto bail; | |
120 | } | |
121 | ||
be94d117 MF |
122 | status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name, |
123 | dentry->d_name.len, &blkno); | |
ccd979bd MF |
124 | if (status < 0) |
125 | goto bail_add; | |
126 | ||
5fa0613e | 127 | inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0); |
ccd979bd | 128 | if (IS_ERR(inode)) { |
ccd979bd MF |
129 | ret = ERR_PTR(-EACCES); |
130 | goto bail_unlock; | |
131 | } | |
132 | ||
133 | oi = OCFS2_I(inode); | |
134 | /* Clear any orphaned state... If we were able to look up the | |
135 | * inode from a directory, it certainly can't be orphaned. We | |
136 | * might have the bad state from a node which intended to | |
137 | * orphan this inode but crashed before it could commit the | |
138 | * unlink. */ | |
139 | spin_lock(&oi->ip_lock); | |
140 | oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED; | |
ccd979bd MF |
141 | spin_unlock(&oi->ip_lock); |
142 | ||
143 | bail_add: | |
ccd979bd MF |
144 | ret = d_splice_alias(inode, dentry); |
145 | ||
379dfe9d MF |
146 | if (inode) { |
147 | /* | |
148 | * If d_splice_alias() finds a DCACHE_DISCONNECTED | |
149 | * dentry, it will d_move() it on top of ourse. The | |
150 | * return value will indicate this however, so in | |
151 | * those cases, we switch them around for the locking | |
152 | * code. | |
153 | * | |
154 | * NOTE: This dentry already has ->d_op set from | |
155 | * ocfs2_get_parent() and ocfs2_get_dentry() | |
156 | */ | |
d3556bab | 157 | if (!IS_ERR_OR_NULL(ret)) |
379dfe9d MF |
158 | dentry = ret; |
159 | ||
160 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
0027dd5b | 161 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
162 | if (status) { |
163 | mlog_errno(status); | |
164 | ret = ERR_PTR(status); | |
165 | goto bail_unlock; | |
166 | } | |
5e98d492 GR |
167 | } else |
168 | ocfs2_dentry_attach_gen(dentry); | |
379dfe9d | 169 | |
ccd979bd MF |
170 | bail_unlock: |
171 | /* Don't drop the cluster lock until *after* the d_add -- | |
172 | * unlink on another node will message us to remove that | |
173 | * dentry under this lock so otherwise we can race this with | |
34d024f8 | 174 | * the downconvert thread and have a stale dentry. */ |
e63aecb6 | 175 | ocfs2_inode_unlock(dir, 0); |
ccd979bd MF |
176 | |
177 | bail: | |
ccd979bd | 178 | |
8990e44a | 179 | trace_ocfs2_lookup_ret(ret); |
ccd979bd MF |
180 | |
181 | return ret; | |
182 | } | |
183 | ||
67697cbd | 184 | static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode) |
f5d36202 TY |
185 | { |
186 | struct inode *inode; | |
9c89fe0a | 187 | int status; |
f5d36202 TY |
188 | |
189 | inode = new_inode(dir->i_sb); | |
190 | if (!inode) { | |
191 | mlog(ML_ERROR, "new_inode failed!\n"); | |
9c89fe0a | 192 | return ERR_PTR(-ENOMEM); |
f5d36202 TY |
193 | } |
194 | ||
195 | /* populate as many fields early on as possible - many of | |
196 | * these are used by the support functions here and in | |
197 | * callers. */ | |
198 | if (S_ISDIR(mode)) | |
bfe86848 | 199 | set_nlink(inode, 2); |
9452e93e | 200 | mode = mode_strip_sgid(&nop_mnt_idmap, dir, mode); |
f2d40141 | 201 | inode_init_owner(&nop_mnt_idmap, 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 | ||
5ebb29be | 224 | static int ocfs2_mknod(struct mnt_idmap *idmap, |
549c7297 | 225 | struct inode *dir, |
ccd979bd | 226 | struct dentry *dentry, |
1a67aafb | 227 | umode_t mode, |
ccd979bd MF |
228 | dev_t dev) |
229 | { | |
230 | int status = 0; | |
231 | struct buffer_head *parent_fe_bh = NULL; | |
1fabe148 | 232 | handle_t *handle = NULL; |
ccd979bd MF |
233 | struct ocfs2_super *osb; |
234 | struct ocfs2_dinode *dirfe; | |
28f4821b | 235 | struct ocfs2_dinode *fe = NULL; |
ccd979bd | 236 | struct buffer_head *new_fe_bh = NULL; |
ccd979bd MF |
237 | struct inode *inode = NULL; |
238 | struct ocfs2_alloc_context *inode_ac = NULL; | |
239 | struct ocfs2_alloc_context *data_ac = NULL; | |
9b7895ef | 240 | struct ocfs2_alloc_context *meta_ac = NULL; |
534eaddd | 241 | int want_clusters = 0; |
9b7895ef | 242 | int want_meta = 0; |
534eaddd TY |
243 | int xattr_credits = 0; |
244 | struct ocfs2_security_xattr_info si = { | |
de3004c8 | 245 | .name = NULL, |
534eaddd TY |
246 | .enable = 1, |
247 | }; | |
a90714c1 | 248 | int did_quota_inode = 0; |
4a12ca3a | 249 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
250 | sigset_t oldset; |
251 | int did_block_signals = 0; | |
595297a8 | 252 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 253 | |
8990e44a TM |
254 | trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
255 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
256 | (unsigned long)dev, mode); | |
ccd979bd | 257 | |
9c89fe0a JK |
258 | status = dquot_initialize(dir); |
259 | if (status) { | |
260 | mlog_errno(status); | |
261 | return status; | |
262 | } | |
907f4554 | 263 | |
ccd979bd MF |
264 | /* get our super block */ |
265 | osb = OCFS2_SB(dir->i_sb); | |
266 | ||
e63aecb6 | 267 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
e3a82138 MF |
268 | if (status < 0) { |
269 | if (status != -ENOENT) | |
270 | mlog_errno(status); | |
271 | return status; | |
272 | } | |
273 | ||
198a1ca3 | 274 | if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) { |
a663e305 MF |
275 | status = -EMLINK; |
276 | goto leave; | |
277 | } | |
278 | ||
ccd979bd | 279 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
198a1ca3 | 280 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
281 | /* can't make a file in a deleted directory. */ |
282 | status = -ENOENT; | |
283 | goto leave; | |
284 | } | |
285 | ||
286 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
287 | dentry->d_name.len); | |
288 | if (status) | |
289 | goto leave; | |
290 | ||
291 | /* get a spot inside the dir. */ | |
292 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
293 | dentry->d_name.name, | |
4a12ca3a | 294 | dentry->d_name.len, &lookup); |
ccd979bd MF |
295 | if (status < 0) { |
296 | mlog_errno(status); | |
297 | goto leave; | |
298 | } | |
299 | ||
300 | /* reserve an inode spot */ | |
da5cbf2f | 301 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
302 | if (status < 0) { |
303 | if (status != -ENOSPC) | |
304 | mlog_errno(status); | |
305 | goto leave; | |
306 | } | |
307 | ||
f5d36202 | 308 | inode = ocfs2_get_init_inode(dir, mode); |
9c89fe0a JK |
309 | if (IS_ERR(inode)) { |
310 | status = PTR_ERR(inode); | |
311 | inode = NULL; | |
f5d36202 TY |
312 | mlog_errno(status); |
313 | goto leave; | |
314 | } | |
315 | ||
534eaddd | 316 | /* get security xattr */ |
2a7dba39 | 317 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
318 | if (status) { |
319 | if (status == -EOPNOTSUPP) | |
320 | si.enable = 0; | |
321 | else { | |
322 | mlog_errno(status); | |
323 | goto leave; | |
324 | } | |
325 | } | |
326 | ||
89c38bd0 TY |
327 | /* calculate meta data/clusters for setting security and acl xattr */ |
328 | status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode, | |
9b7895ef MF |
329 | &si, &want_clusters, |
330 | &xattr_credits, &want_meta); | |
89c38bd0 TY |
331 | if (status < 0) { |
332 | mlog_errno(status); | |
333 | goto leave; | |
ccd979bd MF |
334 | } |
335 | ||
534eaddd | 336 | /* Reserve a cluster if creating an extent based directory. */ |
9b7895ef | 337 | if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) { |
534eaddd TY |
338 | want_clusters += 1; |
339 | ||
9b7895ef | 340 | /* Dir indexing requires extra space as well */ |
4ed8a6bb | 341 | if (ocfs2_supports_indexed_dirs(osb)) |
9b7895ef | 342 | want_meta++; |
9b7895ef MF |
343 | } |
344 | ||
345 | status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac); | |
346 | if (status < 0) { | |
347 | if (status != -ENOSPC) | |
348 | mlog_errno(status); | |
349 | goto leave; | |
350 | } | |
351 | ||
534eaddd TY |
352 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); |
353 | if (status < 0) { | |
354 | if (status != -ENOSPC) | |
355 | mlog_errno(status); | |
356 | goto leave; | |
357 | } | |
358 | ||
9b7895ef MF |
359 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, |
360 | S_ISDIR(mode), | |
361 | xattr_credits)); | |
ccd979bd MF |
362 | if (IS_ERR(handle)) { |
363 | status = PTR_ERR(handle); | |
364 | handle = NULL; | |
365 | mlog_errno(status); | |
366 | goto leave; | |
367 | } | |
368 | ||
547ba7c8 JB |
369 | /* Starting to change things, restart is no longer possible. */ |
370 | ocfs2_block_signals(&oldset); | |
371 | did_block_signals = 1; | |
372 | ||
63936dda CH |
373 | status = dquot_alloc_inode(inode); |
374 | if (status) | |
a90714c1 | 375 | goto leave; |
a90714c1 JK |
376 | did_quota_inode = 1; |
377 | ||
ccd979bd | 378 | /* do the real work now. */ |
19bd341f | 379 | status = ocfs2_mknod_locked(osb, dir, inode, dev, |
ccd979bd | 380 | &new_fe_bh, parent_fe_bh, handle, |
f5d36202 | 381 | inode_ac); |
ccd979bd MF |
382 | if (status < 0) { |
383 | mlog_errno(status); | |
384 | goto leave; | |
385 | } | |
386 | ||
28f4821b | 387 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; |
ccd979bd MF |
388 | if (S_ISDIR(mode)) { |
389 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, | |
9b7895ef | 390 | new_fe_bh, data_ac, meta_ac); |
ccd979bd MF |
391 | if (status < 0) { |
392 | mlog_errno(status); | |
393 | goto leave; | |
394 | } | |
395 | ||
0cf2f763 JB |
396 | status = ocfs2_journal_access_di(handle, INODE_CACHE(dir), |
397 | parent_fe_bh, | |
13723d00 | 398 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
399 | if (status < 0) { |
400 | mlog_errno(status); | |
401 | goto leave; | |
402 | } | |
198a1ca3 | 403 | ocfs2_add_links_count(dirfe, 1); |
ec20cec7 | 404 | ocfs2_journal_dirty(handle, parent_fe_bh); |
d8c76e6f | 405 | inc_nlink(dir); |
ccd979bd MF |
406 | } |
407 | ||
c25a1e06 JB |
408 | status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh, |
409 | meta_ac, data_ac); | |
702e5bc6 | 410 | |
89c38bd0 TY |
411 | if (status < 0) { |
412 | mlog_errno(status); | |
0434c9f4 | 413 | goto roll_back; |
89c38bd0 TY |
414 | } |
415 | ||
534eaddd TY |
416 | if (si.enable) { |
417 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
9b7895ef | 418 | meta_ac, data_ac); |
534eaddd TY |
419 | if (status < 0) { |
420 | mlog_errno(status); | |
0434c9f4 | 421 | goto roll_back; |
534eaddd TY |
422 | } |
423 | } | |
424 | ||
a9743fcd MF |
425 | /* |
426 | * Do this before adding the entry to the directory. We add | |
427 | * also set d_op after success so that ->d_iput() will cleanup | |
428 | * the dentry lock even if ocfs2_add_entry() fails below. | |
429 | */ | |
430 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
431 | OCFS2_I(dir)->ip_blkno); | |
432 | if (status) { | |
ccd979bd | 433 | mlog_errno(status); |
0434c9f4 | 434 | goto roll_back; |
ccd979bd MF |
435 | } |
436 | ||
595297a8 | 437 | dl = dentry->d_fsdata; |
438 | ||
a9743fcd MF |
439 | status = ocfs2_add_entry(handle, dentry, inode, |
440 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
441 | &lookup); | |
442 | if (status < 0) { | |
379dfe9d | 443 | mlog_errno(status); |
0434c9f4 | 444 | goto roll_back; |
379dfe9d MF |
445 | } |
446 | ||
ccd979bd | 447 | insert_inode_hash(inode); |
ccd979bd MF |
448 | d_instantiate(dentry, inode); |
449 | status = 0; | |
0434c9f4 | 450 | |
451 | roll_back: | |
452 | if (status < 0 && S_ISDIR(mode)) { | |
453 | ocfs2_add_links_count(dirfe, -1); | |
454 | drop_nlink(dir); | |
455 | } | |
456 | ||
ccd979bd | 457 | leave: |
a90714c1 | 458 | if (status < 0 && did_quota_inode) |
63936dda | 459 | dquot_free_inode(inode); |
28f4821b JQ |
460 | if (handle) { |
461 | if (status < 0 && fe) | |
462 | ocfs2_set_links_count(fe, 0); | |
02dc1af4 | 463 | ocfs2_commit_trans(osb, handle); |
28f4821b | 464 | } |
ccd979bd | 465 | |
e63aecb6 | 466 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
467 | if (did_block_signals) |
468 | ocfs2_unblock_signals(&oldset); | |
e3a82138 | 469 | |
a81cb88b | 470 | brelse(new_fe_bh); |
a81cb88b | 471 | brelse(parent_fe_bh); |
534eaddd | 472 | kfree(si.value); |
ccd979bd | 473 | |
4a12ca3a MF |
474 | ocfs2_free_dir_lookup_result(&lookup); |
475 | ||
ccd979bd MF |
476 | if (inode_ac) |
477 | ocfs2_free_alloc_context(inode_ac); | |
478 | ||
479 | if (data_ac) | |
480 | ocfs2_free_alloc_context(data_ac); | |
481 | ||
9b7895ef MF |
482 | if (meta_ac) |
483 | ocfs2_free_alloc_context(meta_ac); | |
534eaddd | 484 | |
062d3403 | 485 | /* |
137cebf9 | 486 | * We should call iput after the i_rwsem of the bitmap been |
062d3403 LD |
487 | * unlocked in ocfs2_free_alloc_context, or the |
488 | * ocfs2_delete_inode will mutex_lock again. | |
489 | */ | |
490 | if ((status < 0) && inode) { | |
595297a8 | 491 | if (dl) |
492 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
493 | ||
062d3403 LD |
494 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
495 | clear_nlink(inode); | |
496 | iput(inode); | |
497 | } | |
498 | ||
c1e8d35e TM |
499 | if (status) |
500 | mlog_errno(status); | |
ccd979bd MF |
501 | |
502 | return status; | |
503 | } | |
504 | ||
021960ca MF |
505 | static int __ocfs2_mknod_locked(struct inode *dir, |
506 | struct inode *inode, | |
507 | dev_t dev, | |
508 | struct buffer_head **new_fe_bh, | |
509 | struct buffer_head *parent_fe_bh, | |
510 | handle_t *handle, | |
511 | struct ocfs2_alloc_context *inode_ac, | |
512 | u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit) | |
ccd979bd MF |
513 | { |
514 | int status = 0; | |
021960ca | 515 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
ccd979bd MF |
516 | struct ocfs2_dinode *fe = NULL; |
517 | struct ocfs2_extent_list *fel; | |
9b7895ef | 518 | u16 feat; |
2931cdcb | 519 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
c62c38f6 | 520 | struct timespec64 ts; |
ccd979bd | 521 | |
ccd979bd | 522 | *new_fe_bh = NULL; |
ccd979bd | 523 | |
ccd979bd MF |
524 | /* populate as many fields early on as possible - many of |
525 | * these are used by the support functions here and in | |
526 | * callers. */ | |
527 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
d324cd4c | 528 | oi->ip_blkno = fe_blkno; |
ccd979bd MF |
529 | spin_lock(&osb->osb_lock); |
530 | inode->i_generation = osb->s_next_generation++; | |
531 | spin_unlock(&osb->osb_lock); | |
532 | ||
533 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
534 | if (!*new_fe_bh) { | |
7391a294 | 535 | status = -ENOMEM; |
ccd979bd MF |
536 | mlog_errno(status); |
537 | goto leave; | |
538 | } | |
8cb471e8 | 539 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
ccd979bd | 540 | |
0cf2f763 JB |
541 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
542 | *new_fe_bh, | |
13723d00 | 543 | OCFS2_JOURNAL_ACCESS_CREATE); |
ccd979bd MF |
544 | if (status < 0) { |
545 | mlog_errno(status); | |
546 | goto leave; | |
547 | } | |
548 | ||
549 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
550 | memset(fe, 0, osb->sb->s_blocksize); | |
551 | ||
552 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
553 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
554 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
2b6cb576 | 555 | fe->i_suballoc_loc = cpu_to_le64(suballoc_loc); |
ccd979bd | 556 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); |
4d0ddb2c | 557 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
2c034176 EB |
558 | fe->i_uid = cpu_to_le32(i_uid_read(inode)); |
559 | fe->i_gid = cpu_to_le32(i_gid_read(inode)); | |
f5d36202 TY |
560 | fe->i_mode = cpu_to_le16(inode->i_mode); |
561 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 562 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
198a1ca3 MF |
563 | |
564 | ocfs2_set_links_count(fe, inode->i_nlink); | |
ccd979bd MF |
565 | |
566 | fe->i_last_eb_blk = 0; | |
567 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
13eb9887 | 568 | fe->i_flags |= cpu_to_le32(OCFS2_VALID_FL); |
b8cb3242 | 569 | ktime_get_coarse_real_ts64(&ts); |
ccd979bd | 570 | fe->i_atime = fe->i_ctime = fe->i_mtime = |
c62c38f6 | 571 | cpu_to_le64(ts.tv_sec); |
ccd979bd | 572 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = |
c62c38f6 | 573 | cpu_to_le32(ts.tv_nsec); |
ccd979bd MF |
574 | fe->i_dtime = 0; |
575 | ||
5b6a3a2b | 576 | /* |
9b7895ef MF |
577 | * If supported, directories start with inline data. If inline |
578 | * isn't supported, but indexing is, we start them as indexed. | |
5b6a3a2b | 579 | */ |
9b7895ef | 580 | feat = le16_to_cpu(fe->i_dyn_features); |
f5d36202 | 581 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
582 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
583 | ||
d9ae49d6 TY |
584 | fe->id2.i_data.id_count = cpu_to_le16( |
585 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); | |
5b6a3a2b MF |
586 | } else { |
587 | fel = &fe->id2.i_list; | |
588 | fel->l_tree_depth = 0; | |
589 | fel->l_next_free_rec = 0; | |
590 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
591 | } | |
ccd979bd | 592 | |
ec20cec7 | 593 | ocfs2_journal_dirty(handle, *new_fe_bh); |
ccd979bd | 594 | |
b657c95c | 595 | ocfs2_populate_inode(inode, fe, 1); |
0cf2f763 | 596 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
c271c5c2 SM |
597 | if (!ocfs2_mount_local(osb)) { |
598 | status = ocfs2_create_new_inode_locks(inode); | |
599 | if (status < 0) | |
600 | mlog_errno(status); | |
601 | } | |
ccd979bd | 602 | |
25b69918 | 603 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
2931cdcb | 604 | |
ccd979bd MF |
605 | leave: |
606 | if (status < 0) { | |
607 | if (*new_fe_bh) { | |
608 | brelse(*new_fe_bh); | |
609 | *new_fe_bh = NULL; | |
610 | } | |
ccd979bd MF |
611 | } |
612 | ||
c1e8d35e TM |
613 | if (status) |
614 | mlog_errno(status); | |
ccd979bd MF |
615 | return status; |
616 | } | |
617 | ||
021960ca MF |
618 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
619 | struct inode *dir, | |
620 | struct inode *inode, | |
621 | dev_t dev, | |
622 | struct buffer_head **new_fe_bh, | |
623 | struct buffer_head *parent_fe_bh, | |
624 | handle_t *handle, | |
625 | struct ocfs2_alloc_context *inode_ac) | |
626 | { | |
627 | int status = 0; | |
628 | u64 suballoc_loc, fe_blkno = 0; | |
629 | u16 suballoc_bit; | |
630 | ||
631 | *new_fe_bh = NULL; | |
632 | ||
633 | status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh, | |
634 | inode_ac, &suballoc_loc, | |
635 | &suballoc_bit, &fe_blkno); | |
636 | if (status < 0) { | |
637 | mlog_errno(status); | |
638 | return status; | |
639 | } | |
640 | ||
759a7c61 | 641 | return __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh, |
021960ca MF |
642 | parent_fe_bh, handle, inode_ac, |
643 | fe_blkno, suballoc_loc, suballoc_bit); | |
644 | } | |
645 | ||
c54bd91e | 646 | static int ocfs2_mkdir(struct mnt_idmap *idmap, |
549c7297 | 647 | struct inode *dir, |
ccd979bd | 648 | struct dentry *dentry, |
18bb1db3 | 649 | umode_t mode) |
ccd979bd MF |
650 | { |
651 | int ret; | |
652 | ||
8990e44a TM |
653 | trace_ocfs2_mkdir(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
654 | OCFS2_I(dir)->ip_blkno, mode); | |
5ebb29be | 655 | ret = ocfs2_mknod(&nop_mnt_idmap, dir, dentry, mode | S_IFDIR, 0); |
c1e8d35e TM |
656 | if (ret) |
657 | mlog_errno(ret); | |
ccd979bd MF |
658 | |
659 | return ret; | |
660 | } | |
661 | ||
6c960e68 | 662 | static int ocfs2_create(struct mnt_idmap *idmap, |
549c7297 | 663 | struct inode *dir, |
ccd979bd | 664 | struct dentry *dentry, |
4acdaf27 | 665 | umode_t mode, |
ebfc3b49 | 666 | bool excl) |
ccd979bd MF |
667 | { |
668 | int ret; | |
669 | ||
8990e44a TM |
670 | trace_ocfs2_create(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
671 | (unsigned long long)OCFS2_I(dir)->ip_blkno, mode); | |
5ebb29be | 672 | ret = ocfs2_mknod(&nop_mnt_idmap, dir, dentry, mode | S_IFREG, 0); |
c1e8d35e TM |
673 | if (ret) |
674 | mlog_errno(ret); | |
ccd979bd MF |
675 | |
676 | return ret; | |
677 | } | |
678 | ||
679 | static int ocfs2_link(struct dentry *old_dentry, | |
680 | struct inode *dir, | |
681 | struct dentry *dentry) | |
682 | { | |
1fabe148 | 683 | handle_t *handle; |
2b0143b5 DH |
684 | struct inode *inode = d_inode(old_dentry); |
685 | struct inode *old_dir = d_inode(old_dentry->d_parent); | |
ccd979bd MF |
686 | int err; |
687 | struct buffer_head *fe_bh = NULL; | |
53dc20b9 | 688 | struct buffer_head *old_dir_bh = NULL; |
ccd979bd | 689 | struct buffer_head *parent_fe_bh = NULL; |
ccd979bd MF |
690 | struct ocfs2_dinode *fe = NULL; |
691 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
4a12ca3a | 692 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 | 693 | sigset_t oldset; |
0e048316 | 694 | u64 old_de_ino; |
ccd979bd | 695 | |
8990e44a TM |
696 | trace_ocfs2_link((unsigned long long)OCFS2_I(inode)->ip_blkno, |
697 | old_dentry->d_name.len, old_dentry->d_name.name, | |
698 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 699 | |
123a9643 MF |
700 | if (S_ISDIR(inode->i_mode)) |
701 | return -EPERM; | |
ccd979bd | 702 | |
9c89fe0a JK |
703 | err = dquot_initialize(dir); |
704 | if (err) { | |
705 | mlog_errno(err); | |
706 | return err; | |
707 | } | |
907f4554 | 708 | |
53dc20b9 X |
709 | err = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
710 | &parent_fe_bh, dir, 0); | |
ccd979bd MF |
711 | if (err < 0) { |
712 | if (err != -ENOENT) | |
713 | mlog_errno(err); | |
123a9643 | 714 | return err; |
ccd979bd MF |
715 | } |
716 | ||
53dc20b9 X |
717 | /* make sure both dirs have bhs |
718 | * get an extra ref on old_dir_bh if old==new */ | |
719 | if (!parent_fe_bh) { | |
720 | if (old_dir_bh) { | |
721 | parent_fe_bh = old_dir_bh; | |
722 | get_bh(parent_fe_bh); | |
723 | } else { | |
724 | mlog(ML_ERROR, "%s: no old_dir_bh!\n", osb->uuid_str); | |
725 | err = -EIO; | |
726 | goto out; | |
727 | } | |
728 | } | |
729 | ||
0f62de2c TY |
730 | if (!dir->i_nlink) { |
731 | err = -ENOENT; | |
123a9643 | 732 | goto out; |
0f62de2c TY |
733 | } |
734 | ||
53dc20b9 | 735 | err = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
0e048316 X |
736 | old_dentry->d_name.len, &old_de_ino); |
737 | if (err) { | |
738 | err = -ENOENT; | |
739 | goto out; | |
740 | } | |
741 | ||
742 | /* | |
743 | * Check whether another node removed the source inode while we | |
744 | * were in the vfs. | |
745 | */ | |
746 | if (old_de_ino != OCFS2_I(inode)->ip_blkno) { | |
747 | err = -ENOENT; | |
748 | goto out; | |
749 | } | |
750 | ||
ccd979bd MF |
751 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
752 | dentry->d_name.len); | |
753 | if (err) | |
123a9643 | 754 | goto out; |
ccd979bd MF |
755 | |
756 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
757 | dentry->d_name.name, | |
4a12ca3a | 758 | dentry->d_name.len, &lookup); |
ccd979bd MF |
759 | if (err < 0) { |
760 | mlog_errno(err); | |
123a9643 | 761 | goto out; |
ccd979bd MF |
762 | } |
763 | ||
e63aecb6 | 764 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
765 | if (err < 0) { |
766 | if (err != -ENOENT) | |
767 | mlog_errno(err); | |
123a9643 | 768 | goto out; |
ccd979bd MF |
769 | } |
770 | ||
771 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
198a1ca3 | 772 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
ccd979bd | 773 | err = -EMLINK; |
123a9643 | 774 | goto out_unlock_inode; |
ccd979bd MF |
775 | } |
776 | ||
a90714c1 | 777 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
778 | if (IS_ERR(handle)) { |
779 | err = PTR_ERR(handle); | |
780 | handle = NULL; | |
781 | mlog_errno(err); | |
123a9643 | 782 | goto out_unlock_inode; |
ccd979bd MF |
783 | } |
784 | ||
547ba7c8 JB |
785 | /* Starting to change things, restart is no longer possible. */ |
786 | ocfs2_block_signals(&oldset); | |
787 | ||
0cf2f763 | 788 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 789 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
790 | if (err < 0) { |
791 | mlog_errno(err); | |
123a9643 | 792 | goto out_commit; |
ccd979bd MF |
793 | } |
794 | ||
d8c76e6f | 795 | inc_nlink(inode); |
6861de97 | 796 | inode_set_ctime_current(inode); |
198a1ca3 | 797 | ocfs2_set_links_count(fe, inode->i_nlink); |
fd6acbbc JL |
798 | fe->i_ctime = cpu_to_le64(inode_get_ctime_sec(inode)); |
799 | fe->i_ctime_nsec = cpu_to_le32(inode_get_ctime_nsec(inode)); | |
8c40984e | 800 | ocfs2_update_inode_fsync_trans(handle, inode, 0); |
ec20cec7 | 801 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd MF |
802 | |
803 | err = ocfs2_add_entry(handle, dentry, inode, | |
804 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 805 | parent_fe_bh, &lookup); |
ccd979bd | 806 | if (err) { |
198a1ca3 | 807 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 808 | drop_nlink(inode); |
ccd979bd | 809 | mlog_errno(err); |
123a9643 | 810 | goto out_commit; |
ccd979bd MF |
811 | } |
812 | ||
0027dd5b | 813 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
814 | if (err) { |
815 | mlog_errno(err); | |
123a9643 | 816 | goto out_commit; |
379dfe9d MF |
817 | } |
818 | ||
7de9c6ee | 819 | ihold(inode); |
ccd979bd | 820 | d_instantiate(dentry, inode); |
123a9643 MF |
821 | |
822 | out_commit: | |
02dc1af4 | 823 | ocfs2_commit_trans(osb, handle); |
547ba7c8 | 824 | ocfs2_unblock_signals(&oldset); |
123a9643 | 825 | out_unlock_inode: |
e63aecb6 | 826 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
827 | |
828 | out: | |
53dc20b9 | 829 | ocfs2_double_unlock(old_dir, dir); |
123a9643 | 830 | |
a81cb88b MF |
831 | brelse(fe_bh); |
832 | brelse(parent_fe_bh); | |
53dc20b9 | 833 | brelse(old_dir_bh); |
ccd979bd | 834 | |
4a12ca3a MF |
835 | ocfs2_free_dir_lookup_result(&lookup); |
836 | ||
c1e8d35e TM |
837 | if (err) |
838 | mlog_errno(err); | |
ccd979bd MF |
839 | |
840 | return err; | |
841 | } | |
842 | ||
379dfe9d MF |
843 | /* |
844 | * Takes and drops an exclusive lock on the given dentry. This will | |
845 | * force other nodes to drop it. | |
846 | */ | |
847 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
848 | { | |
849 | int ret; | |
850 | ||
851 | ret = ocfs2_dentry_lock(dentry, 1); | |
852 | if (ret) | |
853 | mlog_errno(ret); | |
854 | else | |
855 | ocfs2_dentry_unlock(dentry, 1); | |
856 | ||
857 | return ret; | |
858 | } | |
859 | ||
b5a8bb71 | 860 | static inline int ocfs2_inode_is_unlinkable(struct inode *inode) |
17ff7856 MF |
861 | { |
862 | if (S_ISDIR(inode->i_mode)) { | |
863 | if (inode->i_nlink == 2) | |
864 | return 1; | |
865 | return 0; | |
866 | } | |
867 | ||
868 | if (inode->i_nlink == 1) | |
869 | return 1; | |
870 | return 0; | |
871 | } | |
872 | ||
ccd979bd MF |
873 | static int ocfs2_unlink(struct inode *dir, |
874 | struct dentry *dentry) | |
875 | { | |
876 | int status; | |
30a4f5e8 | 877 | int child_locked = 0; |
b5a8bb71 | 878 | bool is_unlinkable = false; |
2b0143b5 | 879 | struct inode *inode = d_inode(dentry); |
5098c27b | 880 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
881 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
882 | u64 blkno; | |
883 | struct ocfs2_dinode *fe = NULL; | |
884 | struct buffer_head *fe_bh = NULL; | |
885 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 886 | handle_t *handle = NULL; |
ccd979bd | 887 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
888 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
889 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd | 890 | |
8990e44a TM |
891 | trace_ocfs2_unlink(dir, dentry, dentry->d_name.len, |
892 | dentry->d_name.name, | |
893 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
894 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 895 | |
9c89fe0a JK |
896 | status = dquot_initialize(dir); |
897 | if (status) { | |
898 | mlog_errno(status); | |
899 | return status; | |
900 | } | |
907f4554 | 901 | |
2b0143b5 | 902 | BUG_ON(d_inode(dentry->d_parent) != dir); |
ccd979bd | 903 | |
8990e44a | 904 | if (inode == osb->root_inode) |
30a4f5e8 | 905 | return -EPERM; |
ccd979bd | 906 | |
cb25797d JK |
907 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
908 | OI_LS_PARENT); | |
ccd979bd MF |
909 | if (status < 0) { |
910 | if (status != -ENOENT) | |
911 | mlog_errno(status); | |
30a4f5e8 | 912 | return status; |
ccd979bd MF |
913 | } |
914 | ||
915 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
916 | dentry->d_name.len, &blkno, dir, |
917 | &lookup); | |
ccd979bd MF |
918 | if (status < 0) { |
919 | if (status != -ENOENT) | |
920 | mlog_errno(status); | |
921 | goto leave; | |
922 | } | |
923 | ||
924 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
925 | status = -ENOENT; | |
926 | ||
8990e44a TM |
927 | trace_ocfs2_unlink_noent( |
928 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
929 | (unsigned long long)blkno, | |
930 | OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
931 | goto leave; |
932 | } | |
933 | ||
e63aecb6 | 934 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
935 | if (status < 0) { |
936 | if (status != -ENOENT) | |
937 | mlog_errno(status); | |
938 | goto leave; | |
939 | } | |
30a4f5e8 | 940 | child_locked = 1; |
ccd979bd MF |
941 | |
942 | if (S_ISDIR(inode->i_mode)) { | |
b80b549c | 943 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
ccd979bd MF |
944 | status = -ENOTEMPTY; |
945 | goto leave; | |
946 | } | |
947 | } | |
948 | ||
379dfe9d | 949 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 950 | if (status < 0) { |
34d024f8 | 951 | /* This remote delete should succeed under all normal |
ccd979bd MF |
952 | * circumstances. */ |
953 | mlog_errno(status); | |
954 | goto leave; | |
955 | } | |
956 | ||
b5a8bb71 | 957 | if (ocfs2_inode_is_unlinkable(inode)) { |
19bd341f TM |
958 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
959 | OCFS2_I(inode)->ip_blkno, | |
06ee5c75 JQ |
960 | orphan_name, &orphan_insert, |
961 | false); | |
ccd979bd MF |
962 | if (status < 0) { |
963 | mlog_errno(status); | |
964 | goto leave; | |
965 | } | |
b5a8bb71 | 966 | is_unlinkable = true; |
ccd979bd MF |
967 | } |
968 | ||
a90714c1 | 969 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
970 | if (IS_ERR(handle)) { |
971 | status = PTR_ERR(handle); | |
972 | handle = NULL; | |
973 | mlog_errno(status); | |
974 | goto leave; | |
975 | } | |
976 | ||
0cf2f763 | 977 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 978 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
979 | if (status < 0) { |
980 | mlog_errno(status); | |
981 | goto leave; | |
982 | } | |
983 | ||
984 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
985 | ||
ccd979bd | 986 | /* delete the name from the parent dir */ |
4a12ca3a | 987 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
988 | if (status < 0) { |
989 | mlog_errno(status); | |
990 | goto leave; | |
991 | } | |
992 | ||
17ff7856 MF |
993 | if (S_ISDIR(inode->i_mode)) |
994 | drop_nlink(inode); | |
995 | drop_nlink(inode); | |
198a1ca3 | 996 | ocfs2_set_links_count(fe, inode->i_nlink); |
8c40984e | 997 | ocfs2_update_inode_fsync_trans(handle, inode, 0); |
ec20cec7 | 998 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd | 999 | |
fd6acbbc | 1000 | inode_set_mtime_to_ts(dir, inode_set_ctime_current(dir)); |
592282cf | 1001 | if (S_ISDIR(inode->i_mode)) |
17ff7856 | 1002 | drop_nlink(dir); |
592282cf MF |
1003 | |
1004 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
1005 | if (status < 0) { | |
1006 | mlog_errno(status); | |
1007 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 1008 | inc_nlink(dir); |
b5a8bb71 YL |
1009 | goto leave; |
1010 | } | |
1011 | ||
1012 | if (is_unlinkable) { | |
1013 | status = ocfs2_orphan_add(osb, handle, inode, fe_bh, | |
06ee5c75 | 1014 | orphan_name, &orphan_insert, orphan_dir, false); |
b5a8bb71 YL |
1015 | if (status < 0) |
1016 | mlog_errno(status); | |
ccd979bd MF |
1017 | } |
1018 | ||
1019 | leave: | |
ccd979bd | 1020 | if (handle) |
02dc1af4 | 1021 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1022 | |
5098c27b MF |
1023 | if (orphan_dir) { |
1024 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1025 | ocfs2_inode_unlock(orphan_dir, 1); |
5955102c | 1026 | inode_unlock(orphan_dir); |
5098c27b MF |
1027 | iput(orphan_dir); |
1028 | } | |
1029 | ||
3cb2ec43 JQ |
1030 | if (child_locked) |
1031 | ocfs2_inode_unlock(inode, 1); | |
1032 | ||
1033 | ocfs2_inode_unlock(dir, 1); | |
1034 | ||
a81cb88b | 1035 | brelse(fe_bh); |
a81cb88b | 1036 | brelse(parent_node_bh); |
4a12ca3a MF |
1037 | |
1038 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1039 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd | 1040 | |
f5b25855 | 1041 | if (status && (status != -ENOTEMPTY) && (status != -ENOENT)) |
c1e8d35e | 1042 | mlog_errno(status); |
ccd979bd MF |
1043 | |
1044 | return status; | |
1045 | } | |
1046 | ||
f7a14f32 YJ |
1047 | static int ocfs2_check_if_ancestor(struct ocfs2_super *osb, |
1048 | u64 src_inode_no, u64 dest_inode_no) | |
1049 | { | |
1050 | int ret = 0, i = 0; | |
1051 | u64 parent_inode_no = 0; | |
1052 | u64 child_inode_no = src_inode_no; | |
1053 | struct inode *child_inode; | |
1054 | ||
1055 | #define MAX_LOOKUP_TIMES 32 | |
1056 | while (1) { | |
1057 | child_inode = ocfs2_iget(osb, child_inode_no, 0, 0); | |
1058 | if (IS_ERR(child_inode)) { | |
1059 | ret = PTR_ERR(child_inode); | |
1060 | break; | |
1061 | } | |
1062 | ||
1063 | ret = ocfs2_inode_lock(child_inode, NULL, 0); | |
1064 | if (ret < 0) { | |
1065 | iput(child_inode); | |
1066 | if (ret != -ENOENT) | |
1067 | mlog_errno(ret); | |
1068 | break; | |
1069 | } | |
1070 | ||
1071 | ret = ocfs2_lookup_ino_from_name(child_inode, "..", 2, | |
1072 | &parent_inode_no); | |
1073 | ocfs2_inode_unlock(child_inode, 0); | |
1074 | iput(child_inode); | |
1075 | if (ret < 0) { | |
1076 | ret = -ENOENT; | |
1077 | break; | |
1078 | } | |
1079 | ||
1080 | if (parent_inode_no == dest_inode_no) { | |
1081 | ret = 1; | |
1082 | break; | |
1083 | } | |
1084 | ||
1085 | if (parent_inode_no == osb->root_inode->i_ino) { | |
1086 | ret = 0; | |
1087 | break; | |
1088 | } | |
1089 | ||
1090 | child_inode_no = parent_inode_no; | |
1091 | ||
1092 | if (++i >= MAX_LOOKUP_TIMES) { | |
45680967 MFO |
1093 | mlog_ratelimited(ML_NOTICE, "max lookup times reached, " |
1094 | "filesystem may have nested directories, " | |
f7a14f32 YJ |
1095 | "src inode: %llu, dest inode: %llu.\n", |
1096 | (unsigned long long)src_inode_no, | |
1097 | (unsigned long long)dest_inode_no); | |
1098 | ret = 0; | |
1099 | break; | |
1100 | } | |
1101 | } | |
1102 | ||
1103 | return ret; | |
1104 | } | |
1105 | ||
ccd979bd | 1106 | /* |
53dc20b9 | 1107 | * The only place this should be used is rename and link! |
ccd979bd MF |
1108 | * if they have the same id, then the 1st one is the only one locked. |
1109 | */ | |
1110 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
1111 | struct buffer_head **bh1, |
1112 | struct inode *inode1, | |
1113 | struct buffer_head **bh2, | |
53dc20b9 X |
1114 | struct inode *inode2, |
1115 | int rename) | |
ccd979bd MF |
1116 | { |
1117 | int status; | |
f7a14f32 | 1118 | int inode1_is_ancestor, inode2_is_ancestor; |
ccd979bd MF |
1119 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); |
1120 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
ccd979bd | 1121 | |
8990e44a TM |
1122 | trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno, |
1123 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 1124 | |
ccd979bd MF |
1125 | if (*bh1) |
1126 | *bh1 = NULL; | |
1127 | if (*bh2) | |
1128 | *bh2 = NULL; | |
1129 | ||
f7a14f32 YJ |
1130 | /* we always want to lock the one with the lower lockid first. |
1131 | * and if they are nested, we lock ancestor first */ | |
ccd979bd | 1132 | if (oi1->ip_blkno != oi2->ip_blkno) { |
f7a14f32 YJ |
1133 | inode1_is_ancestor = ocfs2_check_if_ancestor(osb, oi2->ip_blkno, |
1134 | oi1->ip_blkno); | |
1135 | if (inode1_is_ancestor < 0) { | |
1136 | status = inode1_is_ancestor; | |
1137 | goto bail; | |
1138 | } | |
1139 | ||
1140 | inode2_is_ancestor = ocfs2_check_if_ancestor(osb, oi1->ip_blkno, | |
1141 | oi2->ip_blkno); | |
1142 | if (inode2_is_ancestor < 0) { | |
1143 | status = inode2_is_ancestor; | |
1144 | goto bail; | |
1145 | } | |
1146 | ||
1147 | if ((inode1_is_ancestor == 1) || | |
1148 | (oi1->ip_blkno < oi2->ip_blkno && | |
1149 | inode2_is_ancestor == 0)) { | |
ccd979bd | 1150 | /* switch id1 and id2 around */ |
ab1ba021 FF |
1151 | swap(bh2, bh1); |
1152 | swap(inode2, inode1); | |
ccd979bd MF |
1153 | } |
1154 | /* lock id2 */ | |
cb25797d | 1155 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
53dc20b9 | 1156 | rename == 1 ? OI_LS_RENAME1 : OI_LS_PARENT); |
ccd979bd MF |
1157 | if (status < 0) { |
1158 | if (status != -ENOENT) | |
1159 | mlog_errno(status); | |
1160 | goto bail; | |
1161 | } | |
1162 | } | |
8d5596c6 | 1163 | |
ccd979bd | 1164 | /* lock id1 */ |
53dc20b9 X |
1165 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, |
1166 | rename == 1 ? OI_LS_RENAME2 : OI_LS_PARENT); | |
ccd979bd | 1167 | if (status < 0) { |
8d5596c6 MF |
1168 | /* |
1169 | * An error return must mean that no cluster locks | |
1170 | * were held on function exit. | |
1171 | */ | |
1e6d9153 | 1172 | if (oi1->ip_blkno != oi2->ip_blkno) { |
e63aecb6 | 1173 | ocfs2_inode_unlock(inode2, 1); |
1e6d9153 TM |
1174 | brelse(*bh2); |
1175 | *bh2 = NULL; | |
1176 | } | |
8d5596c6 | 1177 | |
ccd979bd MF |
1178 | if (status != -ENOENT) |
1179 | mlog_errno(status); | |
ccd979bd | 1180 | } |
8d5596c6 | 1181 | |
8990e44a | 1182 | trace_ocfs2_double_lock_end( |
d324cd4c | 1183 | (unsigned long long)oi1->ip_blkno, |
1184 | (unsigned long long)oi2->ip_blkno); | |
8990e44a | 1185 | |
ccd979bd | 1186 | bail: |
c1e8d35e TM |
1187 | if (status) |
1188 | mlog_errno(status); | |
ccd979bd MF |
1189 | return status; |
1190 | } | |
1191 | ||
8d5596c6 MF |
1192 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
1193 | { | |
e63aecb6 | 1194 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
1195 | |
1196 | if (inode1 != inode2) | |
e63aecb6 | 1197 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1198 | } |
1199 | ||
e18275ae | 1200 | static int ocfs2_rename(struct mnt_idmap *idmap, |
549c7297 | 1201 | struct inode *old_dir, |
ccd979bd MF |
1202 | struct dentry *old_dentry, |
1203 | struct inode *new_dir, | |
1cd66c93 MS |
1204 | struct dentry *new_dentry, |
1205 | unsigned int flags) | |
ccd979bd | 1206 | { |
4a12ca3a MF |
1207 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1208 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
2b0143b5 DH |
1209 | struct inode *old_inode = d_inode(old_dentry); |
1210 | struct inode *new_inode = d_inode(new_dentry); | |
5098c27b | 1211 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1212 | struct ocfs2_dinode *newfe = NULL; |
1213 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
ccd979bd | 1214 | struct buffer_head *newfe_bh = NULL; |
592282cf | 1215 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd | 1216 | struct ocfs2_super *osb = NULL; |
5b6a3a2b | 1217 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1218 | handle_t *handle = NULL; |
ccd979bd MF |
1219 | struct buffer_head *old_dir_bh = NULL; |
1220 | struct buffer_head *new_dir_bh = NULL; | |
847c9db5 | 1221 | u32 old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1222 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1223 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1224 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1225 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1226 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1227 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
5fb1beb0 | 1228 | bool should_add_orphan = false; |
ccd979bd | 1229 | |
1cd66c93 MS |
1230 | if (flags) |
1231 | return -EINVAL; | |
1232 | ||
ccd979bd MF |
1233 | /* At some point it might be nice to break this function up a |
1234 | * bit. */ | |
1235 | ||
8990e44a TM |
1236 | trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry, |
1237 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1238 | new_dentry->d_name.len, new_dentry->d_name.name); | |
ccd979bd | 1239 | |
9c89fe0a JK |
1240 | status = dquot_initialize(old_dir); |
1241 | if (status) { | |
1242 | mlog_errno(status); | |
1243 | goto bail; | |
1244 | } | |
1245 | status = dquot_initialize(new_dir); | |
1246 | if (status) { | |
1247 | mlog_errno(status); | |
1248 | goto bail; | |
1249 | } | |
907f4554 | 1250 | |
ccd979bd MF |
1251 | osb = OCFS2_SB(old_dir->i_sb); |
1252 | ||
1253 | if (new_inode) { | |
1254 | if (!igrab(new_inode)) | |
1255 | BUG(); | |
1256 | } | |
1257 | ||
1b3c3714 | 1258 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1259 | * a/b/c |
1260 | * a/d | |
1261 | * a,b,c, and d are all directories. | |
1262 | * | |
1263 | * from cwd of 'a' on both nodes: | |
1264 | * node1: mv b/c d | |
1265 | * node2: mv d b/c | |
1266 | * | |
1267 | * And that's why, just like the VFS, we need a file system | |
1268 | * rename lock. */ | |
5dabd695 | 1269 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1270 | status = ocfs2_rename_lock(osb); |
1271 | if (status < 0) { | |
1272 | mlog_errno(status); | |
1273 | goto bail; | |
1274 | } | |
1275 | rename_lock = 1; | |
f7a14f32 YJ |
1276 | |
1277 | /* here we cannot guarantee the inodes haven't just been | |
1278 | * changed, so check if they are nested again */ | |
1279 | status = ocfs2_check_if_ancestor(osb, new_dir->i_ino, | |
1280 | old_inode->i_ino); | |
1281 | if (status < 0) { | |
1282 | mlog_errno(status); | |
1283 | goto bail; | |
1284 | } else if (status == 1) { | |
1285 | status = -EPERM; | |
1286 | trace_ocfs2_rename_not_permitted( | |
1287 | (unsigned long long)old_inode->i_ino, | |
1288 | (unsigned long long)new_dir->i_ino); | |
1289 | goto bail; | |
1290 | } | |
ccd979bd MF |
1291 | } |
1292 | ||
ccd979bd | 1293 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 | 1294 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
53dc20b9 | 1295 | &new_dir_bh, new_dir, 1); |
ccd979bd MF |
1296 | if (status < 0) { |
1297 | mlog_errno(status); | |
1298 | goto bail; | |
1299 | } | |
8d5596c6 | 1300 | parents_locked = 1; |
ccd979bd | 1301 | |
928dda1f YJ |
1302 | if (!new_dir->i_nlink) { |
1303 | status = -EACCES; | |
1304 | goto bail; | |
1305 | } | |
1306 | ||
ccd979bd MF |
1307 | /* make sure both dirs have bhs |
1308 | * get an extra ref on old_dir_bh if old==new */ | |
1309 | if (!new_dir_bh) { | |
1310 | if (old_dir_bh) { | |
1311 | new_dir_bh = old_dir_bh; | |
1312 | get_bh(new_dir_bh); | |
1313 | } else { | |
1314 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1315 | status = -EIO; | |
1316 | goto bail; | |
1317 | } | |
1318 | } | |
1319 | ||
379dfe9d | 1320 | /* |
592282cf | 1321 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1322 | * also ensures that the downconvert thread on other nodes |
1323 | * won't have to concurrently downconvert the inode and the | |
1324 | * dentry locks. | |
379dfe9d | 1325 | */ |
cb25797d JK |
1326 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
1327 | OI_LS_PARENT); | |
379dfe9d MF |
1328 | if (status < 0) { |
1329 | if (status != -ENOENT) | |
ccd979bd | 1330 | mlog_errno(status); |
379dfe9d MF |
1331 | goto bail; |
1332 | } | |
8d5596c6 | 1333 | old_child_locked = 1; |
ccd979bd | 1334 | |
379dfe9d MF |
1335 | status = ocfs2_remote_dentry_delete(old_dentry); |
1336 | if (status < 0) { | |
1337 | mlog_errno(status); | |
1338 | goto bail; | |
1339 | } | |
1340 | ||
9d618d19 | 1341 | if (S_ISDIR(old_inode->i_mode) && new_dir != old_dir) { |
38760e24 MF |
1342 | u64 old_inode_parent; |
1343 | ||
4a12ca3a | 1344 | update_dot_dot = 1; |
38760e24 | 1345 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1346 | old_inode, |
1347 | &old_inode_dot_dot_res); | |
38760e24 MF |
1348 | if (status) { |
1349 | status = -EIO; | |
ccd979bd | 1350 | goto bail; |
38760e24 | 1351 | } |
ccd979bd | 1352 | |
38760e24 MF |
1353 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1354 | status = -EIO; | |
ccd979bd | 1355 | goto bail; |
38760e24 MF |
1356 | } |
1357 | ||
9d618d19 | 1358 | if (!new_inode && new_dir->i_nlink >= ocfs2_link_max(osb)) { |
38760e24 | 1359 | status = -EMLINK; |
ccd979bd | 1360 | goto bail; |
38760e24 | 1361 | } |
ccd979bd MF |
1362 | } |
1363 | ||
5b6a3a2b MF |
1364 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1365 | old_dentry->d_name.len, | |
1366 | &old_de_ino); | |
1367 | if (status) { | |
1368 | status = -ENOENT; | |
ccd979bd | 1369 | goto bail; |
5b6a3a2b | 1370 | } |
ccd979bd MF |
1371 | |
1372 | /* | |
1373 | * Check for inode number is _not_ due to possible IO errors. | |
1374 | * We might rmdir the source, keep it as pwd of some process | |
1375 | * and merrily kill the link to whatever was created under the | |
1376 | * same name. Goodbye sticky bit ;-< | |
1377 | */ | |
5b6a3a2b MF |
1378 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1379 | status = -ENOENT; | |
ccd979bd | 1380 | goto bail; |
5b6a3a2b | 1381 | } |
ccd979bd MF |
1382 | |
1383 | /* check if the target already exists (in which case we need | |
1384 | * to delete it */ | |
1385 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1386 | new_dentry->d_name.len, | |
4a12ca3a MF |
1387 | &newfe_blkno, new_dir, |
1388 | &target_lookup_res); | |
ccd979bd MF |
1389 | /* The only error we allow here is -ENOENT because the new |
1390 | * file not existing is perfectly valid. */ | |
1391 | if ((status < 0) && (status != -ENOENT)) { | |
1392 | /* If we cannot find the file specified we should just */ | |
1393 | /* return the error... */ | |
1394 | mlog_errno(status); | |
1395 | goto bail; | |
1396 | } | |
4a12ca3a MF |
1397 | if (status == 0) |
1398 | target_exists = 1; | |
ccd979bd | 1399 | |
4a12ca3a | 1400 | if (!target_exists && new_inode) { |
e325a88f SE |
1401 | /* |
1402 | * Target was unlinked by another node while we were | |
1403 | * waiting to get to ocfs2_rename(). There isn't | |
1404 | * anything we can do here to help the situation, so | |
1405 | * bubble up the appropriate error. | |
1406 | */ | |
1407 | status = -ENOENT; | |
1408 | goto bail; | |
1409 | } | |
ccd979bd MF |
1410 | |
1411 | /* In case we need to overwrite an existing file, we blow it | |
1412 | * away first */ | |
4a12ca3a | 1413 | if (target_exists) { |
ccd979bd MF |
1414 | /* VFS didn't think there existed an inode here, but |
1415 | * someone else in the cluster must have raced our | |
1416 | * rename to create one. Today we error cleanly, in | |
1417 | * the future we should consider calling iget to build | |
1418 | * a new struct inode for this entry. */ | |
1419 | if (!new_inode) { | |
1420 | status = -EACCES; | |
1421 | ||
8990e44a TM |
1422 | trace_ocfs2_rename_target_exists(new_dentry->d_name.len, |
1423 | new_dentry->d_name.name); | |
ccd979bd MF |
1424 | goto bail; |
1425 | } | |
1426 | ||
1427 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1428 | status = -EACCES; | |
1429 | ||
8990e44a | 1430 | trace_ocfs2_rename_disagree( |
b0697053 MF |
1431 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, |
1432 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1433 | OCFS2_I(new_inode)->ip_flags); |
1434 | goto bail; | |
1435 | } | |
1436 | ||
e63aecb6 | 1437 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1438 | if (status < 0) { |
1439 | if (status != -ENOENT) | |
1440 | mlog_errno(status); | |
1441 | goto bail; | |
1442 | } | |
8d5596c6 | 1443 | new_child_locked = 1; |
ccd979bd | 1444 | |
379dfe9d | 1445 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1446 | if (status < 0) { |
1447 | mlog_errno(status); | |
1448 | goto bail; | |
1449 | } | |
1450 | ||
1451 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1452 | ||
8990e44a | 1453 | trace_ocfs2_rename_over_existing( |
b0697053 | 1454 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1455 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1456 | ||
1457 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1458 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
19bd341f | 1459 | OCFS2_I(new_inode)->ip_blkno, |
06ee5c75 JQ |
1460 | orphan_name, &orphan_insert, |
1461 | false); | |
ccd979bd MF |
1462 | if (status < 0) { |
1463 | mlog_errno(status); | |
1464 | goto bail; | |
1465 | } | |
5fb1beb0 | 1466 | should_add_orphan = true; |
ccd979bd MF |
1467 | } |
1468 | } else { | |
2b0143b5 | 1469 | BUG_ON(d_inode(new_dentry->d_parent) != new_dir); |
ccd979bd MF |
1470 | |
1471 | status = ocfs2_check_dir_for_entry(new_dir, | |
1472 | new_dentry->d_name.name, | |
1473 | new_dentry->d_name.len); | |
1474 | if (status) | |
1475 | goto bail; | |
1476 | ||
1477 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1478 | new_dentry->d_name.name, | |
1479 | new_dentry->d_name.len, | |
4a12ca3a | 1480 | &target_insert); |
ccd979bd MF |
1481 | if (status < 0) { |
1482 | mlog_errno(status); | |
1483 | goto bail; | |
1484 | } | |
1485 | } | |
1486 | ||
a90714c1 | 1487 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1488 | if (IS_ERR(handle)) { |
1489 | status = PTR_ERR(handle); | |
1490 | handle = NULL; | |
1491 | mlog_errno(status); | |
1492 | goto bail; | |
1493 | } | |
1494 | ||
4a12ca3a | 1495 | if (target_exists) { |
ccd979bd | 1496 | if (S_ISDIR(new_inode->i_mode)) { |
b80b549c MF |
1497 | if (new_inode->i_nlink != 2 || |
1498 | !ocfs2_empty_dir(new_inode)) { | |
ccd979bd MF |
1499 | status = -ENOTEMPTY; |
1500 | goto bail; | |
1501 | } | |
1502 | } | |
0cf2f763 JB |
1503 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
1504 | newfe_bh, | |
13723d00 | 1505 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1506 | if (status < 0) { |
1507 | mlog_errno(status); | |
1508 | goto bail; | |
1509 | } | |
1510 | ||
ccd979bd | 1511 | /* change the dirent to point to the correct inode */ |
4a12ca3a MF |
1512 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1513 | old_inode); | |
ccd979bd MF |
1514 | if (status < 0) { |
1515 | mlog_errno(status); | |
1516 | goto bail; | |
1517 | } | |
cc56c33e | 1518 | inode_inc_iversion(new_dir); |
ccd979bd MF |
1519 | |
1520 | if (S_ISDIR(new_inode->i_mode)) | |
198a1ca3 | 1521 | ocfs2_set_links_count(newfe, 0); |
ccd979bd | 1522 | else |
198a1ca3 | 1523 | ocfs2_add_links_count(newfe, -1); |
ec20cec7 | 1524 | ocfs2_journal_dirty(handle, newfe_bh); |
5fb1beb0 | 1525 | if (should_add_orphan) { |
1526 | status = ocfs2_orphan_add(osb, handle, new_inode, | |
1527 | newfe_bh, orphan_name, | |
06ee5c75 | 1528 | &orphan_insert, orphan_dir, false); |
5fb1beb0 | 1529 | if (status < 0) { |
1530 | mlog_errno(status); | |
1531 | goto bail; | |
1532 | } | |
1533 | } | |
ccd979bd MF |
1534 | } else { |
1535 | /* if the name was not found in new_dir, add it now */ | |
1536 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1537 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1538 | new_dir_bh, &target_insert); |
6b72e5f9 AC |
1539 | if (status < 0) { |
1540 | mlog_errno(status); | |
1541 | goto bail; | |
1542 | } | |
ccd979bd MF |
1543 | } |
1544 | ||
6861de97 | 1545 | inode_set_ctime_current(old_inode); |
ccd979bd | 1546 | mark_inode_dirty(old_inode); |
480214d7 | 1547 | |
0cf2f763 JB |
1548 | status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), |
1549 | old_inode_bh, | |
13723d00 | 1550 | OCFS2_JOURNAL_ACCESS_WRITE); |
480214d7 SM |
1551 | if (status >= 0) { |
1552 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1553 | ||
fd6acbbc JL |
1554 | old_di->i_ctime = cpu_to_le64(inode_get_ctime_sec(old_inode)); |
1555 | old_di->i_ctime_nsec = cpu_to_le32(inode_get_ctime_nsec(old_inode)); | |
ec20cec7 | 1556 | ocfs2_journal_dirty(handle, old_inode_bh); |
480214d7 SM |
1557 | } else |
1558 | mlog_errno(status); | |
ccd979bd | 1559 | |
5b6a3a2b MF |
1560 | /* |
1561 | * Now that the name has been added to new_dir, remove the old name. | |
1562 | * | |
1563 | * We don't keep any directory entry context around until now | |
1564 | * because the insert might have changed the type of directory | |
1565 | * we're dealing with. | |
1566 | */ | |
4a12ca3a MF |
1567 | status = ocfs2_find_entry(old_dentry->d_name.name, |
1568 | old_dentry->d_name.len, old_dir, | |
1569 | &old_entry_lookup); | |
807a7907 | 1570 | if (status) { |
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 | } | |
5b6a3a2b | 1577 | goto bail; |
807a7907 | 1578 | } |
5b6a3a2b | 1579 | |
4a12ca3a | 1580 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
ccd979bd MF |
1581 | if (status < 0) { |
1582 | mlog_errno(status); | |
807a7907 | 1583 | if (!is_journal_aborted(osb->journal->j_journal)) { |
1584 | ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " | |
1585 | "is not deleted.", | |
1586 | new_dentry->d_name.len, new_dentry->d_name.name, | |
1587 | old_dentry->d_name.len, old_dentry->d_name.name); | |
1588 | } | |
ccd979bd MF |
1589 | goto bail; |
1590 | } | |
1591 | ||
1592 | if (new_inode) { | |
6d6b77f1 | 1593 | drop_nlink(new_inode); |
6861de97 | 1594 | inode_set_ctime_current(new_inode); |
ccd979bd | 1595 | } |
fd6acbbc | 1596 | inode_set_mtime_to_ts(old_dir, inode_set_ctime_current(old_dir)); |
4a12ca3a MF |
1597 | |
1598 | if (update_dot_dot) { | |
1599 | status = ocfs2_update_entry(old_inode, handle, | |
1600 | &old_inode_dot_dot_res, new_dir); | |
1b13a703 AC |
1601 | if (status < 0) { |
1602 | mlog_errno(status); | |
1603 | goto bail; | |
1604 | } | |
9d618d19 JK |
1605 | } |
1606 | ||
1607 | if (S_ISDIR(old_inode->i_mode)) { | |
6d6b77f1 | 1608 | drop_nlink(old_dir); |
ccd979bd | 1609 | if (new_inode) { |
6d6b77f1 | 1610 | drop_nlink(new_inode); |
ccd979bd | 1611 | } else { |
d8c76e6f | 1612 | inc_nlink(new_dir); |
ccd979bd MF |
1613 | mark_inode_dirty(new_dir); |
1614 | } | |
1615 | } | |
1616 | mark_inode_dirty(old_dir); | |
592282cf MF |
1617 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1618 | if (new_inode) { | |
ccd979bd | 1619 | mark_inode_dirty(new_inode); |
592282cf MF |
1620 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1621 | } | |
ccd979bd | 1622 | |
592282cf MF |
1623 | if (old_dir != new_dir) { |
1624 | /* Keep the same times on both directories.*/ | |
fd6acbbc JL |
1625 | inode_set_mtime_to_ts(new_dir, |
1626 | inode_set_ctime_to_ts(new_dir, inode_get_ctime(old_dir))); | |
592282cf MF |
1627 | |
1628 | /* | |
1629 | * This will also pick up the i_nlink change from the | |
1630 | * block above. | |
1631 | */ | |
1632 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1633 | } | |
ccd979bd MF |
1634 | |
1635 | if (old_dir_nlink != old_dir->i_nlink) { | |
1636 | if (!old_dir_bh) { | |
1637 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1638 | "%llu from %d to %d but bh is NULL!\n", |
1639 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1640 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1641 | } else { |
1642 | struct ocfs2_dinode *fe; | |
0cf2f763 JB |
1643 | status = ocfs2_journal_access_di(handle, |
1644 | INODE_CACHE(old_dir), | |
1645 | old_dir_bh, | |
1646 | OCFS2_JOURNAL_ACCESS_WRITE); | |
1b13a703 AC |
1647 | if (status < 0) { |
1648 | mlog_errno(status); | |
1649 | goto bail; | |
1650 | } | |
ccd979bd | 1651 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
198a1ca3 | 1652 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
ec20cec7 | 1653 | ocfs2_journal_dirty(handle, old_dir_bh); |
ccd979bd MF |
1654 | } |
1655 | } | |
379dfe9d | 1656 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1657 | status = 0; |
1658 | bail: | |
ccd979bd | 1659 | if (handle) |
02dc1af4 | 1660 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1661 | |
5098c27b MF |
1662 | if (orphan_dir) { |
1663 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1664 | ocfs2_inode_unlock(orphan_dir, 1); |
5955102c | 1665 | inode_unlock(orphan_dir); |
5098c27b MF |
1666 | iput(orphan_dir); |
1667 | } | |
1668 | ||
3cb2ec43 JQ |
1669 | if (new_child_locked) |
1670 | ocfs2_inode_unlock(new_inode, 1); | |
1671 | ||
1672 | if (old_child_locked) | |
1673 | ocfs2_inode_unlock(old_inode, 1); | |
1674 | ||
1675 | if (parents_locked) | |
1676 | ocfs2_double_unlock(old_dir, new_dir); | |
1677 | ||
1678 | if (rename_lock) | |
1679 | ocfs2_rename_unlock(osb); | |
1680 | ||
ccd979bd MF |
1681 | if (new_inode) |
1682 | sync_mapping_buffers(old_inode->i_mapping); | |
1683 | ||
72865d92 | 1684 | iput(new_inode); |
4a12ca3a MF |
1685 | |
1686 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1687 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1688 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1689 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1690 | ocfs2_free_dir_lookup_result(&target_insert); | |
1691 | ||
a81cb88b MF |
1692 | brelse(newfe_bh); |
1693 | brelse(old_inode_bh); | |
1694 | brelse(old_dir_bh); | |
1695 | brelse(new_dir_bh); | |
ccd979bd | 1696 | |
c1e8d35e TM |
1697 | if (status) |
1698 | mlog_errno(status); | |
ccd979bd MF |
1699 | |
1700 | return status; | |
1701 | } | |
1702 | ||
1703 | /* | |
1704 | * we expect i_size = strlen(symname). Copy symname into the file | |
1705 | * data, including the null terminator. | |
1706 | */ | |
1707 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1708 | handle_t *handle, |
ccd979bd MF |
1709 | struct inode *inode, |
1710 | const char *symname) | |
1711 | { | |
1712 | struct buffer_head **bhs = NULL; | |
1713 | const char *c; | |
1714 | struct super_block *sb = osb->sb; | |
4f902c37 | 1715 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1716 | int virtual, blocks, status, i, bytes_left; |
1717 | ||
1718 | bytes_left = i_size_read(inode) + 1; | |
1719 | /* we can't trust i_blocks because we're actually going to | |
1720 | * write i_size + 1 bytes. */ | |
1721 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1722 | ||
8990e44a TM |
1723 | trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks, |
1724 | i_size_read(inode), blocks); | |
ccd979bd MF |
1725 | |
1726 | /* Sanity check -- make sure we're going to fit. */ | |
1727 | if (bytes_left > | |
1728 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1729 | status = -EIO; | |
1730 | mlog_errno(status); | |
1731 | goto bail; | |
1732 | } | |
1733 | ||
1734 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1735 | if (!bhs) { | |
1736 | status = -ENOMEM; | |
1737 | mlog_errno(status); | |
1738 | goto bail; | |
1739 | } | |
1740 | ||
49cb8d2d MF |
1741 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1742 | NULL); | |
ccd979bd MF |
1743 | if (status < 0) { |
1744 | mlog_errno(status); | |
1745 | goto bail; | |
1746 | } | |
1747 | ||
1748 | /* links can never be larger than one cluster so we know this | |
1749 | * is all going to be contiguous, but do a sanity check | |
1750 | * anyway. */ | |
1751 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1752 | status = -EIO; | |
1753 | mlog_errno(status); | |
1754 | goto bail; | |
1755 | } | |
1756 | ||
1757 | virtual = 0; | |
1758 | while(bytes_left > 0) { | |
1759 | c = &symname[virtual * sb->s_blocksize]; | |
1760 | ||
1761 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1762 | if (!bhs[virtual]) { | |
1763 | status = -ENOMEM; | |
1764 | mlog_errno(status); | |
1765 | goto bail; | |
1766 | } | |
8cb471e8 JB |
1767 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
1768 | bhs[virtual]); | |
ccd979bd | 1769 | |
0cf2f763 JB |
1770 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
1771 | bhs[virtual], | |
ccd979bd MF |
1772 | OCFS2_JOURNAL_ACCESS_CREATE); |
1773 | if (status < 0) { | |
1774 | mlog_errno(status); | |
1775 | goto bail; | |
1776 | } | |
1777 | ||
1778 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1779 | ||
1780 | memcpy(bhs[virtual]->b_data, c, | |
1781 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1782 | bytes_left); | |
1783 | ||
ec20cec7 | 1784 | ocfs2_journal_dirty(handle, bhs[virtual]); |
ccd979bd MF |
1785 | |
1786 | virtual++; | |
1787 | p_blkno++; | |
1788 | bytes_left -= sb->s_blocksize; | |
1789 | } | |
1790 | ||
1791 | status = 0; | |
1792 | bail: | |
1793 | ||
1794 | if (bhs) { | |
1795 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1796 | brelse(bhs[i]); |
ccd979bd MF |
1797 | kfree(bhs); |
1798 | } | |
1799 | ||
c1e8d35e TM |
1800 | if (status) |
1801 | mlog_errno(status); | |
ccd979bd MF |
1802 | return status; |
1803 | } | |
1804 | ||
7a77db95 | 1805 | static int ocfs2_symlink(struct mnt_idmap *idmap, |
549c7297 | 1806 | struct inode *dir, |
ccd979bd MF |
1807 | struct dentry *dentry, |
1808 | const char *symname) | |
1809 | { | |
1810 | int status, l, credits; | |
1811 | u64 newsize; | |
1812 | struct ocfs2_super *osb = NULL; | |
1813 | struct inode *inode = NULL; | |
1814 | struct super_block *sb; | |
1815 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1816 | struct buffer_head *parent_fe_bh = NULL; |
1817 | struct ocfs2_dinode *fe = NULL; | |
1818 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1819 | handle_t *handle = NULL; |
ccd979bd MF |
1820 | struct ocfs2_alloc_context *inode_ac = NULL; |
1821 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1822 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1823 | int want_clusters = 0; | |
1824 | int xattr_credits = 0; | |
1825 | struct ocfs2_security_xattr_info si = { | |
de3004c8 | 1826 | .name = NULL, |
534eaddd TY |
1827 | .enable = 1, |
1828 | }; | |
a90714c1 | 1829 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1830 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
1831 | sigset_t oldset; |
1832 | int did_block_signals = 0; | |
595297a8 | 1833 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 1834 | |
8990e44a TM |
1835 | trace_ocfs2_symlink_begin(dir, dentry, symname, |
1836 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 1837 | |
9c89fe0a JK |
1838 | status = dquot_initialize(dir); |
1839 | if (status) { | |
1840 | mlog_errno(status); | |
1841 | goto bail; | |
1842 | } | |
907f4554 | 1843 | |
ccd979bd MF |
1844 | sb = dir->i_sb; |
1845 | osb = OCFS2_SB(sb); | |
1846 | ||
1847 | l = strlen(symname) + 1; | |
1848 | ||
1849 | credits = ocfs2_calc_symlink_credits(sb); | |
1850 | ||
ccd979bd | 1851 | /* lock the parent directory */ |
e63aecb6 | 1852 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1853 | if (status < 0) { |
1854 | if (status != -ENOENT) | |
1855 | mlog_errno(status); | |
6d8fc40e | 1856 | return status; |
ccd979bd MF |
1857 | } |
1858 | ||
1859 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
198a1ca3 | 1860 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
1861 | /* can't make a file in a deleted directory. */ |
1862 | status = -ENOENT; | |
1863 | goto bail; | |
1864 | } | |
1865 | ||
1866 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1867 | dentry->d_name.len); | |
1868 | if (status) | |
1869 | goto bail; | |
1870 | ||
1871 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1872 | dentry->d_name.name, | |
4a12ca3a | 1873 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1874 | if (status < 0) { |
1875 | mlog_errno(status); | |
1876 | goto bail; | |
1877 | } | |
1878 | ||
da5cbf2f | 1879 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1880 | if (status < 0) { |
1881 | if (status != -ENOSPC) | |
1882 | mlog_errno(status); | |
1883 | goto bail; | |
1884 | } | |
1885 | ||
f5d36202 | 1886 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
9c89fe0a JK |
1887 | if (IS_ERR(inode)) { |
1888 | status = PTR_ERR(inode); | |
1889 | inode = NULL; | |
f5d36202 TY |
1890 | mlog_errno(status); |
1891 | goto bail; | |
1892 | } | |
1893 | ||
534eaddd | 1894 | /* get security xattr */ |
2a7dba39 | 1895 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
1896 | if (status) { |
1897 | if (status == -EOPNOTSUPP) | |
1898 | si.enable = 0; | |
1899 | else { | |
1900 | mlog_errno(status); | |
1901 | goto bail; | |
1902 | } | |
1903 | } | |
1904 | ||
1905 | /* calculate meta data/clusters for setting security xattr */ | |
1906 | if (si.enable) { | |
1907 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1908 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1909 | if (status < 0) { |
534eaddd | 1910 | mlog_errno(status); |
ccd979bd MF |
1911 | goto bail; |
1912 | } | |
1913 | } | |
1914 | ||
534eaddd TY |
1915 | /* don't reserve bitmap space for fast symlinks. */ |
1916 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1917 | want_clusters += 1; | |
1918 | ||
1919 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1920 | if (status < 0) { | |
1921 | if (status != -ENOSPC) | |
1922 | mlog_errno(status); | |
1923 | goto bail; | |
1924 | } | |
1925 | ||
1926 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1927 | if (IS_ERR(handle)) { |
1928 | status = PTR_ERR(handle); | |
1929 | handle = NULL; | |
1930 | mlog_errno(status); | |
1931 | goto bail; | |
1932 | } | |
1933 | ||
547ba7c8 JB |
1934 | /* Starting to change things, restart is no longer possible. */ |
1935 | ocfs2_block_signals(&oldset); | |
1936 | did_block_signals = 1; | |
1937 | ||
63936dda CH |
1938 | status = dquot_alloc_inode(inode); |
1939 | if (status) | |
a90714c1 | 1940 | goto bail; |
a90714c1 JK |
1941 | did_quota_inode = 1; |
1942 | ||
8990e44a TM |
1943 | trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len, |
1944 | dentry->d_name.name, | |
1945 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
1946 | inode->i_mode); | |
19bd341f TM |
1947 | |
1948 | status = ocfs2_mknod_locked(osb, dir, inode, | |
f5d36202 TY |
1949 | 0, &new_fe_bh, parent_fe_bh, handle, |
1950 | inode_ac); | |
ccd979bd MF |
1951 | if (status < 0) { |
1952 | mlog_errno(status); | |
1953 | goto bail; | |
1954 | } | |
1955 | ||
1956 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1957 | inode->i_rdev = 0; | |
1958 | newsize = l - 1; | |
ea022dfb | 1959 | inode->i_op = &ocfs2_symlink_inode_operations; |
21fc61c7 | 1960 | inode_nohighmem(inode); |
ccd979bd | 1961 | if (l > ocfs2_fast_symlink_chars(sb)) { |
dcd0538f MF |
1962 | u32 offset = 0; |
1963 | ||
5dd4056d CH |
1964 | status = dquot_alloc_space_nodirty(inode, |
1965 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1966 | if (status) | |
a90714c1 | 1967 | goto bail; |
a90714c1 | 1968 | did_quota = 1; |
ea022dfb | 1969 | inode->i_mapping->a_ops = &ocfs2_aops; |
0eb8d47e TM |
1970 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1971 | new_fe_bh, | |
1972 | handle, data_ac, NULL, | |
1973 | NULL); | |
ccd979bd MF |
1974 | if (status < 0) { |
1975 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1976 | mlog(ML_ERROR, |
1977 | "Failed to extend file to %llu\n", | |
1978 | (unsigned long long)newsize); | |
ccd979bd MF |
1979 | mlog_errno(status); |
1980 | status = -ENOSPC; | |
1981 | } | |
1982 | goto bail; | |
1983 | } | |
1984 | i_size_write(inode, newsize); | |
8110b073 | 1985 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd | 1986 | } else { |
ea022dfb | 1987 | inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops; |
ccd979bd MF |
1988 | memcpy((char *) fe->id2.i_symlink, symname, l); |
1989 | i_size_write(inode, newsize); | |
1990 | inode->i_blocks = 0; | |
1991 | } | |
1992 | ||
1993 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1994 | if (status < 0) { | |
1995 | mlog_errno(status); | |
1996 | goto bail; | |
1997 | } | |
1998 | ||
1999 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
2000 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
2001 | symname); | |
2002 | if (status < 0) { | |
2003 | mlog_errno(status); | |
2004 | goto bail; | |
2005 | } | |
2006 | } | |
2007 | ||
534eaddd TY |
2008 | if (si.enable) { |
2009 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
2010 | xattr_ac, data_ac); | |
2011 | if (status < 0) { | |
2012 | mlog_errno(status); | |
2013 | goto bail; | |
2014 | } | |
2015 | } | |
2016 | ||
a9743fcd MF |
2017 | /* |
2018 | * Do this before adding the entry to the directory. We add | |
2019 | * also set d_op after success so that ->d_iput() will cleanup | |
2020 | * the dentry lock even if ocfs2_add_entry() fails below. | |
2021 | */ | |
2022 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); | |
2023 | if (status) { | |
ccd979bd MF |
2024 | mlog_errno(status); |
2025 | goto bail; | |
2026 | } | |
2027 | ||
595297a8 | 2028 | dl = dentry->d_fsdata; |
2029 | ||
a9743fcd MF |
2030 | status = ocfs2_add_entry(handle, dentry, inode, |
2031 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
2032 | &lookup); | |
2033 | if (status < 0) { | |
379dfe9d MF |
2034 | mlog_errno(status); |
2035 | goto bail; | |
2036 | } | |
2037 | ||
ccd979bd | 2038 | insert_inode_hash(inode); |
ccd979bd MF |
2039 | d_instantiate(dentry, inode); |
2040 | bail: | |
a90714c1 | 2041 | if (status < 0 && did_quota) |
5dd4056d | 2042 | dquot_free_space_nodirty(inode, |
a90714c1 JK |
2043 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
2044 | if (status < 0 && did_quota_inode) | |
63936dda | 2045 | dquot_free_inode(inode); |
28f4821b JQ |
2046 | if (handle) { |
2047 | if (status < 0 && fe) | |
2048 | ocfs2_set_links_count(fe, 0); | |
02dc1af4 | 2049 | ocfs2_commit_trans(osb, handle); |
28f4821b | 2050 | } |
6d8fc40e | 2051 | |
e63aecb6 | 2052 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
2053 | if (did_block_signals) |
2054 | ocfs2_unblock_signals(&oldset); | |
6d8fc40e | 2055 | |
a81cb88b MF |
2056 | brelse(new_fe_bh); |
2057 | brelse(parent_fe_bh); | |
534eaddd | 2058 | kfree(si.value); |
4a12ca3a | 2059 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
2060 | if (inode_ac) |
2061 | ocfs2_free_alloc_context(inode_ac); | |
2062 | if (data_ac) | |
2063 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
2064 | if (xattr_ac) |
2065 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 | 2066 | if ((status < 0) && inode) { |
595297a8 | 2067 | if (dl) |
2068 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
2069 | ||
ab41fdc8 | 2070 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
f5d36202 | 2071 | clear_nlink(inode); |
ccd979bd | 2072 | iput(inode); |
f5d36202 | 2073 | } |
ccd979bd | 2074 | |
c1e8d35e TM |
2075 | if (status) |
2076 | mlog_errno(status); | |
ccd979bd MF |
2077 | |
2078 | return status; | |
2079 | } | |
2080 | ||
ccd979bd MF |
2081 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
2082 | { | |
2083 | int status, namelen; | |
2084 | ||
b0697053 MF |
2085 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
2086 | (long long)blkno); | |
ccd979bd MF |
2087 | if (namelen <= 0) { |
2088 | if (namelen) | |
2089 | status = namelen; | |
2090 | else | |
2091 | status = -EINVAL; | |
2092 | mlog_errno(status); | |
2093 | goto bail; | |
2094 | } | |
2095 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
2096 | status = -EINVAL; | |
2097 | mlog_errno(status); | |
2098 | goto bail; | |
2099 | } | |
2100 | ||
8990e44a | 2101 | trace_ocfs2_blkno_stringify(blkno, name, namelen); |
ccd979bd MF |
2102 | |
2103 | status = 0; | |
2104 | bail: | |
c1e8d35e TM |
2105 | if (status < 0) |
2106 | mlog_errno(status); | |
ccd979bd MF |
2107 | return status; |
2108 | } | |
2109 | ||
dd43bcde MF |
2110 | static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb, |
2111 | struct inode **ret_orphan_dir, | |
2112 | struct buffer_head **ret_orphan_dir_bh) | |
ccd979bd | 2113 | { |
5098c27b | 2114 | struct inode *orphan_dir_inode; |
ccd979bd | 2115 | struct buffer_head *orphan_dir_bh = NULL; |
dd43bcde | 2116 | int ret = 0; |
ccd979bd MF |
2117 | |
2118 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2119 | ORPHAN_DIR_SYSTEM_INODE, | |
2120 | osb->slot_num); | |
2121 | if (!orphan_dir_inode) { | |
dd43bcde MF |
2122 | ret = -ENOENT; |
2123 | mlog_errno(ret); | |
2124 | return ret; | |
ccd979bd MF |
2125 | } |
2126 | ||
5955102c | 2127 | inode_lock(orphan_dir_inode); |
5098c27b | 2128 | |
dd43bcde MF |
2129 | ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2130 | if (ret < 0) { | |
5955102c | 2131 | inode_unlock(orphan_dir_inode); |
dd43bcde MF |
2132 | iput(orphan_dir_inode); |
2133 | ||
2134 | mlog_errno(ret); | |
2135 | return ret; | |
ccd979bd MF |
2136 | } |
2137 | ||
dd43bcde MF |
2138 | *ret_orphan_dir = orphan_dir_inode; |
2139 | *ret_orphan_dir_bh = orphan_dir_bh; | |
5098c27b | 2140 | |
dd43bcde MF |
2141 | return 0; |
2142 | } | |
2143 | ||
2144 | static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode, | |
2145 | struct buffer_head *orphan_dir_bh, | |
2146 | u64 blkno, | |
2147 | char *name, | |
06ee5c75 JQ |
2148 | struct ocfs2_dir_lookup_result *lookup, |
2149 | bool dio) | |
dd43bcde MF |
2150 | { |
2151 | int ret; | |
2152 | struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb); | |
06ee5c75 JQ |
2153 | int namelen = dio ? |
2154 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2155 | OCFS2_ORPHAN_NAMELEN; | |
2156 | ||
2157 | if (dio) { | |
2158 | ret = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2159 | OCFS2_DIO_ORPHAN_PREFIX); | |
2160 | if (ret != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2161 | ret = -EINVAL; | |
2162 | mlog_errno(ret); | |
2163 | return ret; | |
2164 | } | |
dd43bcde | 2165 | |
06ee5c75 JQ |
2166 | ret = ocfs2_blkno_stringify(blkno, |
2167 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2168 | } else | |
2169 | ret = ocfs2_blkno_stringify(blkno, name); | |
dd43bcde MF |
2170 | if (ret < 0) { |
2171 | mlog_errno(ret); | |
2172 | return ret; | |
2173 | } | |
2174 | ||
2175 | ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
2176 | orphan_dir_bh, name, | |
06ee5c75 | 2177 | namelen, lookup); |
dd43bcde MF |
2178 | if (ret < 0) { |
2179 | mlog_errno(ret); | |
2180 | return ret; | |
2181 | } | |
2182 | ||
2183 | return 0; | |
2184 | } | |
2185 | ||
2186 | /** | |
2187 | * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for | |
2188 | * insertion of an orphan. | |
2189 | * @osb: ocfs2 file system | |
2190 | * @ret_orphan_dir: Orphan dir inode - returned locked! | |
2191 | * @blkno: Actual block number of the inode to be inserted into orphan dir. | |
2192 | * @lookup: dir lookup result, to be passed back into functions like | |
2193 | * ocfs2_orphan_add | |
2194 | * | |
2195 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2196 | * fields will be populated. | |
2197 | * | |
2198 | * Returns non-zero on failure. | |
2199 | */ | |
2200 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
2201 | struct inode **ret_orphan_dir, | |
2202 | u64 blkno, | |
2203 | char *name, | |
06ee5c75 JQ |
2204 | struct ocfs2_dir_lookup_result *lookup, |
2205 | bool dio) | |
dd43bcde MF |
2206 | { |
2207 | struct inode *orphan_dir_inode = NULL; | |
2208 | struct buffer_head *orphan_dir_bh = NULL; | |
2209 | int ret = 0; | |
2210 | ||
2211 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode, | |
2212 | &orphan_dir_bh); | |
2213 | if (ret < 0) { | |
2214 | mlog_errno(ret); | |
2215 | return ret; | |
2216 | } | |
2217 | ||
2218 | ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh, | |
06ee5c75 | 2219 | blkno, name, lookup, dio); |
dd43bcde MF |
2220 | if (ret < 0) { |
2221 | mlog_errno(ret); | |
2222 | goto out; | |
ccd979bd MF |
2223 | } |
2224 | ||
5098c27b MF |
2225 | *ret_orphan_dir = orphan_dir_inode; |
2226 | ||
dd43bcde MF |
2227 | out: |
2228 | brelse(orphan_dir_bh); | |
2229 | ||
2230 | if (ret) { | |
2231 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2232 | inode_unlock(orphan_dir_inode); |
ccd979bd | 2233 | iput(orphan_dir_inode); |
5098c27b | 2234 | } |
ccd979bd | 2235 | |
c1e8d35e TM |
2236 | if (ret) |
2237 | mlog_errno(ret); | |
dd43bcde | 2238 | return ret; |
ccd979bd MF |
2239 | } |
2240 | ||
2241 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 2242 | handle_t *handle, |
ccd979bd | 2243 | struct inode *inode, |
3939fda4 | 2244 | struct buffer_head *fe_bh, |
ccd979bd | 2245 | char *name, |
4a12ca3a | 2246 | struct ocfs2_dir_lookup_result *lookup, |
06ee5c75 JQ |
2247 | struct inode *orphan_dir_inode, |
2248 | bool dio) | |
ccd979bd | 2249 | { |
ccd979bd MF |
2250 | struct buffer_head *orphan_dir_bh = NULL; |
2251 | int status = 0; | |
2252 | struct ocfs2_dinode *orphan_fe; | |
3939fda4 | 2253 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; |
06ee5c75 JQ |
2254 | int namelen = dio ? |
2255 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2256 | OCFS2_ORPHAN_NAMELEN; | |
ccd979bd | 2257 | |
8990e44a TM |
2258 | trace_ocfs2_orphan_add_begin( |
2259 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 2260 | |
b657c95c | 2261 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
2262 | if (status < 0) { |
2263 | mlog_errno(status); | |
2264 | goto leave; | |
2265 | } | |
2266 | ||
0cf2f763 JB |
2267 | status = ocfs2_journal_access_di(handle, |
2268 | INODE_CACHE(orphan_dir_inode), | |
2269 | orphan_dir_bh, | |
13723d00 | 2270 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2271 | if (status < 0) { |
2272 | mlog_errno(status); | |
2273 | goto leave; | |
2274 | } | |
2275 | ||
ea45466a YL |
2276 | /* |
2277 | * We're going to journal the change of i_flags and i_orphaned_slot. | |
2278 | * It's safe anyway, though some callers may duplicate the journaling. | |
2279 | * Journaling within the func just make the logic look more | |
2280 | * straightforward. | |
2281 | */ | |
2282 | status = ocfs2_journal_access_di(handle, | |
2283 | INODE_CACHE(inode), | |
2284 | fe_bh, | |
2285 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2286 | if (status < 0) { | |
2287 | mlog_errno(status); | |
2288 | goto leave; | |
2289 | } | |
2290 | ||
ccd979bd MF |
2291 | /* we're a cluster, and nlink can change on disk from |
2292 | * underneath us... */ | |
2293 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2294 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2295 | ocfs2_add_links_count(orphan_fe, 1); |
bfe86848 | 2296 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2297 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2298 | |
2299 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
06ee5c75 | 2300 | namelen, inode, |
ccd979bd | 2301 | OCFS2_I(inode)->ip_blkno, |
4a12ca3a | 2302 | orphan_dir_bh, lookup); |
ccd979bd MF |
2303 | if (status < 0) { |
2304 | mlog_errno(status); | |
ea45466a | 2305 | goto rollback; |
3939fda4 TY |
2306 | } |
2307 | ||
06ee5c75 JQ |
2308 | if (dio) { |
2309 | /* Update flag OCFS2_DIO_ORPHANED_FL and record the orphan | |
2310 | * slot. | |
2311 | */ | |
2312 | fe->i_flags |= cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2313 | fe->i_dio_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2314 | } else { | |
2315 | fe->i_flags |= cpu_to_le32(OCFS2_ORPHANED_FL); | |
2316 | OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR; | |
ccd979bd | 2317 | |
06ee5c75 JQ |
2318 | /* Record which orphan dir our inode now resides |
2319 | * in. delete_inode will use this to determine which orphan | |
2320 | * dir to lock. */ | |
2321 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2322 | } | |
ccd979bd | 2323 | |
3939fda4 TY |
2324 | ocfs2_journal_dirty(handle, fe_bh); |
2325 | ||
8990e44a TM |
2326 | trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno, |
2327 | osb->slot_num); | |
ccd979bd | 2328 | |
ea45466a YL |
2329 | rollback: |
2330 | if (status < 0) { | |
2331 | if (S_ISDIR(inode->i_mode)) | |
2332 | ocfs2_add_links_count(orphan_fe, -1); | |
2333 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); | |
2334 | } | |
2335 | ||
ccd979bd | 2336 | leave: |
a81cb88b | 2337 | brelse(orphan_dir_bh); |
ccd979bd | 2338 | |
ccd979bd MF |
2339 | return status; |
2340 | } | |
2341 | ||
2342 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
2343 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 2344 | handle_t *handle, |
ccd979bd MF |
2345 | struct inode *orphan_dir_inode, |
2346 | struct inode *inode, | |
06ee5c75 JQ |
2347 | struct buffer_head *orphan_dir_bh, |
2348 | bool dio) | |
ccd979bd | 2349 | { |
64202a21 | 2350 | char name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1]; |
ccd979bd MF |
2351 | struct ocfs2_dinode *orphan_fe; |
2352 | int status = 0; | |
4a12ca3a | 2353 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd | 2354 | |
06ee5c75 JQ |
2355 | if (dio) { |
2356 | status = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2357 | OCFS2_DIO_ORPHAN_PREFIX); | |
2358 | if (status != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2359 | status = -EINVAL; | |
2360 | mlog_errno(status); | |
2361 | return status; | |
2362 | } | |
2363 | ||
2364 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, | |
2365 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2366 | } else | |
2367 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
ccd979bd MF |
2368 | if (status < 0) { |
2369 | mlog_errno(status); | |
2370 | goto leave; | |
2371 | } | |
2372 | ||
8990e44a TM |
2373 | trace_ocfs2_orphan_del( |
2374 | (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
e38a5739 | 2375 | name, strlen(name)); |
ccd979bd | 2376 | |
074a6c65 JQ |
2377 | status = ocfs2_journal_access_di(handle, |
2378 | INODE_CACHE(orphan_dir_inode), | |
2379 | orphan_dir_bh, | |
2380 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2381 | if (status < 0) { | |
2382 | mlog_errno(status); | |
2383 | goto leave; | |
2384 | } | |
2385 | ||
ccd979bd | 2386 | /* find it's spot in the orphan directory */ |
e38a5739 | 2387 | status = ocfs2_find_entry(name, strlen(name), orphan_dir_inode, |
4a12ca3a MF |
2388 | &lookup); |
2389 | if (status) { | |
ccd979bd MF |
2390 | mlog_errno(status); |
2391 | goto leave; | |
2392 | } | |
2393 | ||
2394 | /* remove it from the orphan directory */ | |
4a12ca3a | 2395 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
2396 | if (status < 0) { |
2397 | mlog_errno(status); | |
2398 | goto leave; | |
2399 | } | |
2400 | ||
ccd979bd MF |
2401 | /* do the i_nlink dance! :) */ |
2402 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2403 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2404 | ocfs2_add_links_count(orphan_fe, -1); |
bfe86848 | 2405 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2406 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2407 | |
2408 | leave: | |
4a12ca3a | 2409 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd | 2410 | |
c1e8d35e TM |
2411 | if (status) |
2412 | mlog_errno(status); | |
ccd979bd MF |
2413 | return status; |
2414 | } | |
2415 | ||
97b8f4a9 | 2416 | /** |
25985edc | 2417 | * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to receive a newly |
97b8f4a9 MF |
2418 | * allocated file. This is different from the typical 'add to orphan dir' |
2419 | * operation in that the inode does not yet exist. This is a problem because | |
2420 | * the orphan dir stringifies the inode block number to come up with it's | |
2421 | * dirent. Obviously if the inode does not yet exist we have a chicken and egg | |
2422 | * problem. This function works around it by calling deeper into the orphan | |
2423 | * and suballoc code than other callers. Use this only by necessity. | |
2424 | * @dir: The directory which this inode will ultimately wind up under - not the | |
2425 | * orphan dir! | |
2426 | * @dir_bh: buffer_head the @dir inode block | |
2427 | * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled | |
2428 | * with the string to be used for orphan dirent. Pass back to the orphan dir | |
2429 | * code. | |
2430 | * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan | |
2431 | * dir code. | |
2432 | * @ret_di_blkno: block number where the new inode will be allocated. | |
2433 | * @orphan_insert: Dir insert context to be passed back into orphan dir code. | |
2434 | * @ret_inode_ac: Inode alloc context to be passed back to the allocator. | |
2435 | * | |
2436 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2437 | * fields will be populated. | |
2438 | * | |
2439 | * Returns non-zero on failure. | |
2440 | */ | |
2441 | static int ocfs2_prep_new_orphaned_file(struct inode *dir, | |
2442 | struct buffer_head *dir_bh, | |
2443 | char *orphan_name, | |
2444 | struct inode **ret_orphan_dir, | |
2445 | u64 *ret_di_blkno, | |
2446 | struct ocfs2_dir_lookup_result *orphan_insert, | |
2447 | struct ocfs2_alloc_context **ret_inode_ac) | |
2448 | { | |
2449 | int ret; | |
2450 | u64 di_blkno; | |
2451 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2452 | struct inode *orphan_dir = NULL; | |
2453 | struct buffer_head *orphan_dir_bh = NULL; | |
2454 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2455 | ||
2456 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh); | |
2457 | if (ret < 0) { | |
2458 | mlog_errno(ret); | |
2459 | return ret; | |
2460 | } | |
2461 | ||
2462 | /* reserve an inode spot */ | |
2463 | ret = ocfs2_reserve_new_inode(osb, &inode_ac); | |
2464 | if (ret < 0) { | |
2465 | if (ret != -ENOSPC) | |
2466 | mlog_errno(ret); | |
2467 | goto out; | |
2468 | } | |
2469 | ||
2470 | ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac, | |
2471 | &di_blkno); | |
2472 | if (ret) { | |
2473 | mlog_errno(ret); | |
2474 | goto out; | |
2475 | } | |
2476 | ||
2477 | ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh, | |
06ee5c75 JQ |
2478 | di_blkno, orphan_name, orphan_insert, |
2479 | false); | |
97b8f4a9 MF |
2480 | if (ret < 0) { |
2481 | mlog_errno(ret); | |
2482 | goto out; | |
2483 | } | |
2484 | ||
2485 | out: | |
2486 | if (ret == 0) { | |
2487 | *ret_orphan_dir = orphan_dir; | |
2488 | *ret_di_blkno = di_blkno; | |
2489 | *ret_inode_ac = inode_ac; | |
2490 | /* | |
2491 | * orphan_name and orphan_insert are already up to | |
2492 | * date via prepare_orphan_dir | |
2493 | */ | |
2494 | } else { | |
2495 | /* Unroll reserve_new_inode* */ | |
2496 | if (inode_ac) | |
2497 | ocfs2_free_alloc_context(inode_ac); | |
2498 | ||
2499 | /* Unroll orphan dir locking */ | |
5955102c | 2500 | inode_unlock(orphan_dir); |
97b8f4a9 MF |
2501 | ocfs2_inode_unlock(orphan_dir, 1); |
2502 | iput(orphan_dir); | |
2503 | } | |
2504 | ||
2505 | brelse(orphan_dir_bh); | |
2506 | ||
7869e590 | 2507 | return ret; |
97b8f4a9 MF |
2508 | } |
2509 | ||
bc13d347 TM |
2510 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
2511 | int mode, | |
2512 | struct inode **new_inode) | |
2513 | { | |
2514 | int status, did_quota_inode = 0; | |
2515 | struct inode *inode = NULL; | |
2516 | struct inode *orphan_dir = NULL; | |
2517 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
bc13d347 TM |
2518 | handle_t *handle = NULL; |
2519 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2520 | struct buffer_head *parent_di_bh = NULL; | |
2521 | struct buffer_head *new_di_bh = NULL; | |
2522 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2523 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
3f649ab7 | 2524 | u64 di_blkno, suballoc_loc; |
97b8f4a9 | 2525 | u16 suballoc_bit; |
bc13d347 TM |
2526 | |
2527 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2528 | if (status < 0) { | |
2529 | if (status != -ENOENT) | |
2530 | mlog_errno(status); | |
2531 | return status; | |
2532 | } | |
2533 | ||
97b8f4a9 MF |
2534 | status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh, |
2535 | orphan_name, &orphan_dir, | |
2536 | &di_blkno, &orphan_insert, &inode_ac); | |
bc13d347 TM |
2537 | if (status < 0) { |
2538 | if (status != -ENOSPC) | |
2539 | mlog_errno(status); | |
2540 | goto leave; | |
2541 | } | |
2542 | ||
2543 | inode = ocfs2_get_init_inode(dir, mode); | |
9c89fe0a JK |
2544 | if (IS_ERR(inode)) { |
2545 | status = PTR_ERR(inode); | |
2546 | inode = NULL; | |
bc13d347 TM |
2547 | mlog_errno(status); |
2548 | goto leave; | |
2549 | } | |
2550 | ||
2551 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); | |
2552 | if (IS_ERR(handle)) { | |
2553 | status = PTR_ERR(handle); | |
2554 | handle = NULL; | |
2555 | mlog_errno(status); | |
2556 | goto leave; | |
2557 | } | |
2558 | ||
63936dda CH |
2559 | status = dquot_alloc_inode(inode); |
2560 | if (status) | |
bc13d347 | 2561 | goto leave; |
bc13d347 TM |
2562 | did_quota_inode = 1; |
2563 | ||
97b8f4a9 MF |
2564 | status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac, |
2565 | &suballoc_loc, | |
2566 | &suballoc_bit, di_blkno); | |
bc13d347 TM |
2567 | if (status < 0) { |
2568 | mlog_errno(status); | |
2569 | goto leave; | |
2570 | } | |
2571 | ||
6d6b77f1 | 2572 | clear_nlink(inode); |
97b8f4a9 MF |
2573 | /* do the real work now. */ |
2574 | status = __ocfs2_mknod_locked(dir, inode, | |
2575 | 0, &new_di_bh, parent_di_bh, handle, | |
2576 | inode_ac, di_blkno, suballoc_loc, | |
2577 | suballoc_bit); | |
bc13d347 TM |
2578 | if (status < 0) { |
2579 | mlog_errno(status); | |
2580 | goto leave; | |
2581 | } | |
2582 | ||
3939fda4 | 2583 | status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name, |
06ee5c75 | 2584 | &orphan_insert, orphan_dir, false); |
bc13d347 TM |
2585 | if (status < 0) { |
2586 | mlog_errno(status); | |
2587 | goto leave; | |
2588 | } | |
2589 | ||
2590 | /* get open lock so that only nodes can't remove it from orphan dir. */ | |
2591 | status = ocfs2_open_lock(inode); | |
2592 | if (status < 0) | |
2593 | mlog_errno(status); | |
2594 | ||
c7d260af | 2595 | insert_inode_hash(inode); |
bc13d347 TM |
2596 | leave: |
2597 | if (status < 0 && did_quota_inode) | |
63936dda | 2598 | dquot_free_inode(inode); |
bc13d347 TM |
2599 | if (handle) |
2600 | ocfs2_commit_trans(osb, handle); | |
2601 | ||
2602 | if (orphan_dir) { | |
2603 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
2604 | ocfs2_inode_unlock(orphan_dir, 1); | |
5955102c | 2605 | inode_unlock(orphan_dir); |
bc13d347 TM |
2606 | iput(orphan_dir); |
2607 | } | |
2608 | ||
bc13d347 TM |
2609 | if ((status < 0) && inode) { |
2610 | clear_nlink(inode); | |
2611 | iput(inode); | |
2612 | } | |
2613 | ||
2614 | if (inode_ac) | |
2615 | ocfs2_free_alloc_context(inode_ac); | |
2616 | ||
2617 | brelse(new_di_bh); | |
2618 | ||
2619 | if (!status) | |
2620 | *new_inode = inode; | |
2621 | ||
2622 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2623 | ||
2624 | ocfs2_inode_unlock(dir, 1); | |
2625 | brelse(parent_di_bh); | |
2626 | return status; | |
2627 | } | |
2628 | ||
06ee5c75 JQ |
2629 | int ocfs2_add_inode_to_orphan(struct ocfs2_super *osb, |
2630 | struct inode *inode) | |
2631 | { | |
2632 | char orphan_name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1]; | |
2633 | struct inode *orphan_dir_inode = NULL; | |
2634 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
2635 | struct buffer_head *di_bh = NULL; | |
2636 | int status = 0; | |
2637 | handle_t *handle = NULL; | |
4813962b | 2638 | struct ocfs2_dinode *di = NULL; |
06ee5c75 JQ |
2639 | |
2640 | status = ocfs2_inode_lock(inode, &di_bh, 1); | |
2641 | if (status < 0) { | |
2642 | mlog_errno(status); | |
2643 | goto bail; | |
2644 | } | |
2645 | ||
4813962b JQ |
2646 | di = (struct ocfs2_dinode *) di_bh->b_data; |
2647 | /* | |
2648 | * Another append dio crashed? | |
512f62ac | 2649 | * If so, manually recover it first. |
4813962b JQ |
2650 | */ |
2651 | if (unlikely(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))) { | |
512f62ac JQ |
2652 | status = ocfs2_truncate_file(inode, di_bh, i_size_read(inode)); |
2653 | if (status < 0) { | |
2654 | if (status != -ENOSPC) | |
2655 | mlog_errno(status); | |
2656 | goto bail_unlock_inode; | |
2657 | } | |
2658 | ||
2659 | status = ocfs2_del_inode_from_orphan(osb, inode, di_bh, 0, 0); | |
2660 | if (status < 0) { | |
2661 | mlog_errno(status); | |
2662 | goto bail_unlock_inode; | |
2663 | } | |
4813962b JQ |
2664 | } |
2665 | ||
06ee5c75 JQ |
2666 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir_inode, |
2667 | OCFS2_I(inode)->ip_blkno, | |
2668 | orphan_name, | |
2669 | &orphan_insert, | |
2670 | true); | |
2671 | if (status < 0) { | |
2672 | mlog_errno(status); | |
2673 | goto bail_unlock_inode; | |
2674 | } | |
2675 | ||
2676 | handle = ocfs2_start_trans(osb, | |
2677 | OCFS2_INODE_ADD_TO_ORPHAN_CREDITS); | |
2678 | if (IS_ERR(handle)) { | |
2679 | status = PTR_ERR(handle); | |
2680 | goto bail_unlock_orphan; | |
2681 | } | |
2682 | ||
2683 | status = ocfs2_orphan_add(osb, handle, inode, di_bh, orphan_name, | |
2684 | &orphan_insert, orphan_dir_inode, true); | |
2685 | if (status) | |
2686 | mlog_errno(status); | |
2687 | ||
2688 | ocfs2_commit_trans(osb, handle); | |
2689 | ||
2690 | bail_unlock_orphan: | |
2691 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2692 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2693 | iput(orphan_dir_inode); |
2694 | ||
2695 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2696 | ||
2697 | bail_unlock_inode: | |
2698 | ocfs2_inode_unlock(inode, 1); | |
2699 | brelse(di_bh); | |
2700 | ||
2701 | bail: | |
2702 | return status; | |
2703 | } | |
2704 | ||
2705 | int ocfs2_del_inode_from_orphan(struct ocfs2_super *osb, | |
cf1776a9 JQ |
2706 | struct inode *inode, struct buffer_head *di_bh, |
2707 | int update_isize, loff_t end) | |
06ee5c75 JQ |
2708 | { |
2709 | struct inode *orphan_dir_inode = NULL; | |
2710 | struct buffer_head *orphan_dir_bh = NULL; | |
cf1776a9 | 2711 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data; |
06ee5c75 JQ |
2712 | handle_t *handle = NULL; |
2713 | int status = 0; | |
2714 | ||
06ee5c75 JQ |
2715 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
2716 | ORPHAN_DIR_SYSTEM_INODE, | |
2717 | le16_to_cpu(di->i_dio_orphaned_slot)); | |
2718 | if (!orphan_dir_inode) { | |
2719 | status = -ENOENT; | |
2720 | mlog_errno(status); | |
cf1776a9 | 2721 | goto bail; |
06ee5c75 JQ |
2722 | } |
2723 | ||
5955102c | 2724 | inode_lock(orphan_dir_inode); |
06ee5c75 JQ |
2725 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2726 | if (status < 0) { | |
5955102c | 2727 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2728 | iput(orphan_dir_inode); |
2729 | mlog_errno(status); | |
cf1776a9 | 2730 | goto bail; |
06ee5c75 JQ |
2731 | } |
2732 | ||
2733 | handle = ocfs2_start_trans(osb, | |
2734 | OCFS2_INODE_DEL_FROM_ORPHAN_CREDITS); | |
2735 | if (IS_ERR(handle)) { | |
2736 | status = PTR_ERR(handle); | |
2737 | goto bail_unlock_orphan; | |
2738 | } | |
2739 | ||
2740 | BUG_ON(!(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))); | |
2741 | ||
2742 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, | |
2743 | inode, orphan_dir_bh, true); | |
2744 | if (status < 0) { | |
2745 | mlog_errno(status); | |
2746 | goto bail_commit; | |
2747 | } | |
2748 | ||
2749 | status = ocfs2_journal_access_di(handle, | |
2750 | INODE_CACHE(inode), | |
2751 | di_bh, | |
2752 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2753 | if (status < 0) { | |
2754 | mlog_errno(status); | |
2755 | goto bail_commit; | |
2756 | } | |
2757 | ||
2758 | di->i_flags &= ~cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2759 | di->i_dio_orphaned_slot = 0; | |
2760 | ||
2761 | if (update_isize) { | |
2762 | status = ocfs2_set_inode_size(handle, inode, di_bh, end); | |
2763 | if (status) | |
2764 | mlog_errno(status); | |
2765 | } else | |
2766 | ocfs2_journal_dirty(handle, di_bh); | |
2767 | ||
2768 | bail_commit: | |
2769 | ocfs2_commit_trans(osb, handle); | |
2770 | ||
2771 | bail_unlock_orphan: | |
2772 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2773 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2774 | brelse(orphan_dir_bh); |
2775 | iput(orphan_dir_inode); | |
2776 | ||
06ee5c75 JQ |
2777 | bail: |
2778 | return status; | |
2779 | } | |
2780 | ||
bc13d347 TM |
2781 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, |
2782 | struct inode *inode, | |
2783 | struct dentry *dentry) | |
2784 | { | |
2785 | int status = 0; | |
2786 | struct buffer_head *parent_di_bh = NULL; | |
2787 | handle_t *handle = NULL; | |
2788 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2789 | struct ocfs2_dinode *dir_di, *di; | |
2790 | struct inode *orphan_dir_inode = NULL; | |
2791 | struct buffer_head *orphan_dir_bh = NULL; | |
2792 | struct buffer_head *di_bh = NULL; | |
2793 | struct ocfs2_dir_lookup_result lookup = { NULL, }; | |
2794 | ||
8990e44a TM |
2795 | trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry, |
2796 | dentry->d_name.len, dentry->d_name.name, | |
2797 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
2798 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
bc13d347 TM |
2799 | |
2800 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2801 | if (status < 0) { | |
2802 | if (status != -ENOENT) | |
2803 | mlog_errno(status); | |
2804 | return status; | |
2805 | } | |
2806 | ||
2807 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; | |
2808 | if (!dir_di->i_links_count) { | |
2809 | /* can't make a file in a deleted directory. */ | |
2810 | status = -ENOENT; | |
2811 | goto leave; | |
2812 | } | |
2813 | ||
2814 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
2815 | dentry->d_name.len); | |
2816 | if (status) | |
2817 | goto leave; | |
2818 | ||
2819 | /* get a spot inside the dir. */ | |
2820 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, | |
2821 | dentry->d_name.name, | |
2822 | dentry->d_name.len, &lookup); | |
2823 | if (status < 0) { | |
2824 | mlog_errno(status); | |
2825 | goto leave; | |
2826 | } | |
2827 | ||
2828 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2829 | ORPHAN_DIR_SYSTEM_INODE, | |
2830 | osb->slot_num); | |
2831 | if (!orphan_dir_inode) { | |
62f8b1f0 | 2832 | status = -ENOENT; |
bc13d347 TM |
2833 | mlog_errno(status); |
2834 | goto leave; | |
2835 | } | |
2836 | ||
5955102c | 2837 | inode_lock(orphan_dir_inode); |
bc13d347 TM |
2838 | |
2839 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2840 | if (status < 0) { | |
2841 | mlog_errno(status); | |
5955102c | 2842 | inode_unlock(orphan_dir_inode); |
bc13d347 TM |
2843 | iput(orphan_dir_inode); |
2844 | goto leave; | |
2845 | } | |
2846 | ||
2847 | status = ocfs2_read_inode_block(inode, &di_bh); | |
2848 | if (status < 0) { | |
2849 | mlog_errno(status); | |
2850 | goto orphan_unlock; | |
2851 | } | |
2852 | ||
2853 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); | |
2854 | if (IS_ERR(handle)) { | |
2855 | status = PTR_ERR(handle); | |
2856 | handle = NULL; | |
2857 | mlog_errno(status); | |
2858 | goto orphan_unlock; | |
2859 | } | |
2860 | ||
2861 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), | |
2862 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2863 | if (status < 0) { | |
2864 | mlog_errno(status); | |
2865 | goto out_commit; | |
2866 | } | |
2867 | ||
2868 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
06ee5c75 | 2869 | orphan_dir_bh, false); |
bc13d347 TM |
2870 | if (status < 0) { |
2871 | mlog_errno(status); | |
2872 | goto out_commit; | |
2873 | } | |
2874 | ||
2875 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
13eb9887 | 2876 | di->i_flags &= ~cpu_to_le32(OCFS2_ORPHANED_FL); |
bc13d347 | 2877 | di->i_orphaned_slot = 0; |
bfe86848 | 2878 | set_nlink(inode, 1); |
10cf1a02 | 2879 | ocfs2_set_links_count(di, inode->i_nlink); |
6fdb702d | 2880 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
bc13d347 TM |
2881 | ocfs2_journal_dirty(handle, di_bh); |
2882 | ||
2883 | status = ocfs2_add_entry(handle, dentry, inode, | |
2884 | OCFS2_I(inode)->ip_blkno, parent_di_bh, | |
2885 | &lookup); | |
2886 | if (status < 0) { | |
2887 | mlog_errno(status); | |
2888 | goto out_commit; | |
2889 | } | |
2890 | ||
2891 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
2892 | OCFS2_I(dir)->ip_blkno); | |
2893 | if (status) { | |
2894 | mlog_errno(status); | |
2895 | goto out_commit; | |
2896 | } | |
2897 | ||
bc13d347 TM |
2898 | d_instantiate(dentry, inode); |
2899 | status = 0; | |
2900 | out_commit: | |
2901 | ocfs2_commit_trans(osb, handle); | |
2902 | orphan_unlock: | |
2903 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2904 | inode_unlock(orphan_dir_inode); |
bc13d347 TM |
2905 | iput(orphan_dir_inode); |
2906 | leave: | |
2907 | ||
2908 | ocfs2_inode_unlock(dir, 1); | |
2909 | ||
2910 | brelse(di_bh); | |
2911 | brelse(parent_di_bh); | |
2912 | brelse(orphan_dir_bh); | |
2913 | ||
2914 | ocfs2_free_dir_lookup_result(&lookup); | |
2915 | ||
c1e8d35e TM |
2916 | if (status) |
2917 | mlog_errno(status); | |
bc13d347 TM |
2918 | |
2919 | return status; | |
2920 | } | |
2921 | ||
92e1d5be | 2922 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2923 | .create = ocfs2_create, |
2924 | .lookup = ocfs2_lookup, | |
2925 | .link = ocfs2_link, | |
2926 | .unlink = ocfs2_unlink, | |
2927 | .rmdir = ocfs2_unlink, | |
2928 | .symlink = ocfs2_symlink, | |
2929 | .mkdir = ocfs2_mkdir, | |
2930 | .mknod = ocfs2_mknod, | |
2931 | .rename = ocfs2_rename, | |
2932 | .setattr = ocfs2_setattr, | |
2933 | .getattr = ocfs2_getattr, | |
d38eb8db | 2934 | .permission = ocfs2_permission, |
cf1d6c76 | 2935 | .listxattr = ocfs2_listxattr, |
55f4946e | 2936 | .fiemap = ocfs2_fiemap, |
cac2f8b8 | 2937 | .get_inode_acl = ocfs2_iop_get_acl, |
702e5bc6 | 2938 | .set_acl = ocfs2_iop_set_acl, |
2b5f52c5 MS |
2939 | .fileattr_get = ocfs2_fileattr_get, |
2940 | .fileattr_set = ocfs2_fileattr_set, | |
ccd979bd | 2941 | }; |