Commit | Line | Data |
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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); |
1639a49c | 200 | mode = mode_strip_sgid(&init_user_ns, dir, mode); |
21cb47be | 201 | inode_init_owner(&init_user_ns, 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 | ||
549c7297 CB |
224 | static int ocfs2_mknod(struct user_namespace *mnt_userns, |
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 = { | |
245 | .enable = 1, | |
246 | }; | |
a90714c1 | 247 | int did_quota_inode = 0; |
4a12ca3a | 248 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
249 | sigset_t oldset; |
250 | int did_block_signals = 0; | |
595297a8 | 251 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 252 | |
8990e44a TM |
253 | trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
254 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
255 | (unsigned long)dev, mode); | |
ccd979bd | 256 | |
9c89fe0a JK |
257 | status = dquot_initialize(dir); |
258 | if (status) { | |
259 | mlog_errno(status); | |
260 | return status; | |
261 | } | |
907f4554 | 262 | |
ccd979bd MF |
263 | /* get our super block */ |
264 | osb = OCFS2_SB(dir->i_sb); | |
265 | ||
e63aecb6 | 266 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
e3a82138 MF |
267 | if (status < 0) { |
268 | if (status != -ENOENT) | |
269 | mlog_errno(status); | |
270 | return status; | |
271 | } | |
272 | ||
198a1ca3 | 273 | if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) { |
a663e305 MF |
274 | status = -EMLINK; |
275 | goto leave; | |
276 | } | |
277 | ||
ccd979bd | 278 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
198a1ca3 | 279 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
280 | /* can't make a file in a deleted directory. */ |
281 | status = -ENOENT; | |
282 | goto leave; | |
283 | } | |
284 | ||
285 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
286 | dentry->d_name.len); | |
287 | if (status) | |
288 | goto leave; | |
289 | ||
290 | /* get a spot inside the dir. */ | |
291 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
292 | dentry->d_name.name, | |
4a12ca3a | 293 | dentry->d_name.len, &lookup); |
ccd979bd MF |
294 | if (status < 0) { |
295 | mlog_errno(status); | |
296 | goto leave; | |
297 | } | |
298 | ||
299 | /* reserve an inode spot */ | |
da5cbf2f | 300 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
301 | if (status < 0) { |
302 | if (status != -ENOSPC) | |
303 | mlog_errno(status); | |
304 | goto leave; | |
305 | } | |
306 | ||
f5d36202 | 307 | inode = ocfs2_get_init_inode(dir, mode); |
9c89fe0a JK |
308 | if (IS_ERR(inode)) { |
309 | status = PTR_ERR(inode); | |
310 | inode = NULL; | |
f5d36202 TY |
311 | mlog_errno(status); |
312 | goto leave; | |
313 | } | |
314 | ||
534eaddd | 315 | /* get security xattr */ |
2a7dba39 | 316 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
317 | if (status) { |
318 | if (status == -EOPNOTSUPP) | |
319 | si.enable = 0; | |
320 | else { | |
321 | mlog_errno(status); | |
322 | goto leave; | |
323 | } | |
324 | } | |
325 | ||
89c38bd0 TY |
326 | /* calculate meta data/clusters for setting security and acl xattr */ |
327 | status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode, | |
9b7895ef MF |
328 | &si, &want_clusters, |
329 | &xattr_credits, &want_meta); | |
89c38bd0 TY |
330 | if (status < 0) { |
331 | mlog_errno(status); | |
332 | goto leave; | |
ccd979bd MF |
333 | } |
334 | ||
534eaddd | 335 | /* Reserve a cluster if creating an extent based directory. */ |
9b7895ef | 336 | if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) { |
534eaddd TY |
337 | want_clusters += 1; |
338 | ||
9b7895ef | 339 | /* Dir indexing requires extra space as well */ |
4ed8a6bb | 340 | if (ocfs2_supports_indexed_dirs(osb)) |
9b7895ef | 341 | want_meta++; |
9b7895ef MF |
342 | } |
343 | ||
344 | status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac); | |
345 | if (status < 0) { | |
346 | if (status != -ENOSPC) | |
347 | mlog_errno(status); | |
348 | goto leave; | |
349 | } | |
350 | ||
534eaddd TY |
351 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); |
352 | if (status < 0) { | |
353 | if (status != -ENOSPC) | |
354 | mlog_errno(status); | |
355 | goto leave; | |
356 | } | |
357 | ||
9b7895ef MF |
358 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, |
359 | S_ISDIR(mode), | |
360 | xattr_credits)); | |
ccd979bd MF |
361 | if (IS_ERR(handle)) { |
362 | status = PTR_ERR(handle); | |
363 | handle = NULL; | |
364 | mlog_errno(status); | |
365 | goto leave; | |
366 | } | |
367 | ||
547ba7c8 JB |
368 | /* Starting to change things, restart is no longer possible. */ |
369 | ocfs2_block_signals(&oldset); | |
370 | did_block_signals = 1; | |
371 | ||
63936dda CH |
372 | status = dquot_alloc_inode(inode); |
373 | if (status) | |
a90714c1 | 374 | goto leave; |
a90714c1 JK |
375 | did_quota_inode = 1; |
376 | ||
ccd979bd | 377 | /* do the real work now. */ |
19bd341f | 378 | status = ocfs2_mknod_locked(osb, dir, inode, dev, |
ccd979bd | 379 | &new_fe_bh, parent_fe_bh, handle, |
f5d36202 | 380 | inode_ac); |
ccd979bd MF |
381 | if (status < 0) { |
382 | mlog_errno(status); | |
383 | goto leave; | |
384 | } | |
385 | ||
28f4821b | 386 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; |
ccd979bd MF |
387 | if (S_ISDIR(mode)) { |
388 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, | |
9b7895ef | 389 | new_fe_bh, data_ac, meta_ac); |
ccd979bd MF |
390 | if (status < 0) { |
391 | mlog_errno(status); | |
392 | goto leave; | |
393 | } | |
394 | ||
0cf2f763 JB |
395 | status = ocfs2_journal_access_di(handle, INODE_CACHE(dir), |
396 | parent_fe_bh, | |
13723d00 | 397 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
398 | if (status < 0) { |
399 | mlog_errno(status); | |
400 | goto leave; | |
401 | } | |
198a1ca3 | 402 | ocfs2_add_links_count(dirfe, 1); |
ec20cec7 | 403 | ocfs2_journal_dirty(handle, parent_fe_bh); |
d8c76e6f | 404 | inc_nlink(dir); |
ccd979bd MF |
405 | } |
406 | ||
c25a1e06 JB |
407 | status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh, |
408 | meta_ac, data_ac); | |
702e5bc6 | 409 | |
89c38bd0 TY |
410 | if (status < 0) { |
411 | mlog_errno(status); | |
0434c9f4 | 412 | goto roll_back; |
89c38bd0 TY |
413 | } |
414 | ||
534eaddd TY |
415 | if (si.enable) { |
416 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
9b7895ef | 417 | meta_ac, data_ac); |
534eaddd TY |
418 | if (status < 0) { |
419 | mlog_errno(status); | |
0434c9f4 | 420 | goto roll_back; |
534eaddd TY |
421 | } |
422 | } | |
423 | ||
a9743fcd MF |
424 | /* |
425 | * Do this before adding the entry to the directory. We add | |
426 | * also set d_op after success so that ->d_iput() will cleanup | |
427 | * the dentry lock even if ocfs2_add_entry() fails below. | |
428 | */ | |
429 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
430 | OCFS2_I(dir)->ip_blkno); | |
431 | if (status) { | |
ccd979bd | 432 | mlog_errno(status); |
0434c9f4 | 433 | goto roll_back; |
ccd979bd MF |
434 | } |
435 | ||
595297a8 | 436 | dl = dentry->d_fsdata; |
437 | ||
a9743fcd MF |
438 | status = ocfs2_add_entry(handle, dentry, inode, |
439 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
440 | &lookup); | |
441 | if (status < 0) { | |
379dfe9d | 442 | mlog_errno(status); |
0434c9f4 | 443 | goto roll_back; |
379dfe9d MF |
444 | } |
445 | ||
ccd979bd | 446 | insert_inode_hash(inode); |
ccd979bd MF |
447 | d_instantiate(dentry, inode); |
448 | status = 0; | |
0434c9f4 | 449 | |
450 | roll_back: | |
451 | if (status < 0 && S_ISDIR(mode)) { | |
452 | ocfs2_add_links_count(dirfe, -1); | |
453 | drop_nlink(dir); | |
454 | } | |
455 | ||
ccd979bd | 456 | leave: |
a90714c1 | 457 | if (status < 0 && did_quota_inode) |
63936dda | 458 | dquot_free_inode(inode); |
28f4821b JQ |
459 | if (handle) { |
460 | if (status < 0 && fe) | |
461 | ocfs2_set_links_count(fe, 0); | |
02dc1af4 | 462 | ocfs2_commit_trans(osb, handle); |
28f4821b | 463 | } |
ccd979bd | 464 | |
e63aecb6 | 465 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
466 | if (did_block_signals) |
467 | ocfs2_unblock_signals(&oldset); | |
e3a82138 | 468 | |
a81cb88b | 469 | brelse(new_fe_bh); |
a81cb88b | 470 | brelse(parent_fe_bh); |
534eaddd | 471 | kfree(si.value); |
ccd979bd | 472 | |
4a12ca3a MF |
473 | ocfs2_free_dir_lookup_result(&lookup); |
474 | ||
ccd979bd MF |
475 | if (inode_ac) |
476 | ocfs2_free_alloc_context(inode_ac); | |
477 | ||
478 | if (data_ac) | |
479 | ocfs2_free_alloc_context(data_ac); | |
480 | ||
9b7895ef MF |
481 | if (meta_ac) |
482 | ocfs2_free_alloc_context(meta_ac); | |
534eaddd | 483 | |
062d3403 | 484 | /* |
137cebf9 | 485 | * We should call iput after the i_rwsem of the bitmap been |
062d3403 LD |
486 | * unlocked in ocfs2_free_alloc_context, or the |
487 | * ocfs2_delete_inode will mutex_lock again. | |
488 | */ | |
489 | if ((status < 0) && inode) { | |
595297a8 | 490 | if (dl) |
491 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
492 | ||
062d3403 LD |
493 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
494 | clear_nlink(inode); | |
495 | iput(inode); | |
496 | } | |
497 | ||
c1e8d35e TM |
498 | if (status) |
499 | mlog_errno(status); | |
ccd979bd MF |
500 | |
501 | return status; | |
502 | } | |
503 | ||
021960ca MF |
504 | static int __ocfs2_mknod_locked(struct inode *dir, |
505 | struct inode *inode, | |
506 | dev_t dev, | |
507 | struct buffer_head **new_fe_bh, | |
508 | struct buffer_head *parent_fe_bh, | |
509 | handle_t *handle, | |
510 | struct ocfs2_alloc_context *inode_ac, | |
511 | u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit) | |
ccd979bd MF |
512 | { |
513 | int status = 0; | |
021960ca | 514 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
ccd979bd MF |
515 | struct ocfs2_dinode *fe = NULL; |
516 | struct ocfs2_extent_list *fel; | |
9b7895ef | 517 | u16 feat; |
2931cdcb | 518 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
c62c38f6 | 519 | struct timespec64 ts; |
ccd979bd | 520 | |
ccd979bd | 521 | *new_fe_bh = NULL; |
ccd979bd | 522 | |
ccd979bd MF |
523 | /* populate as many fields early on as possible - many of |
524 | * these are used by the support functions here and in | |
525 | * callers. */ | |
526 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
d324cd4c | 527 | oi->ip_blkno = fe_blkno; |
ccd979bd MF |
528 | spin_lock(&osb->osb_lock); |
529 | inode->i_generation = osb->s_next_generation++; | |
530 | spin_unlock(&osb->osb_lock); | |
531 | ||
532 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
533 | if (!*new_fe_bh) { | |
7391a294 | 534 | status = -ENOMEM; |
ccd979bd MF |
535 | mlog_errno(status); |
536 | goto leave; | |
537 | } | |
8cb471e8 | 538 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
ccd979bd | 539 | |
0cf2f763 JB |
540 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
541 | *new_fe_bh, | |
13723d00 | 542 | OCFS2_JOURNAL_ACCESS_CREATE); |
ccd979bd MF |
543 | if (status < 0) { |
544 | mlog_errno(status); | |
545 | goto leave; | |
546 | } | |
547 | ||
548 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
549 | memset(fe, 0, osb->sb->s_blocksize); | |
550 | ||
551 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
552 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
553 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
2b6cb576 | 554 | fe->i_suballoc_loc = cpu_to_le64(suballoc_loc); |
ccd979bd | 555 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); |
4d0ddb2c | 556 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
2c034176 EB |
557 | fe->i_uid = cpu_to_le32(i_uid_read(inode)); |
558 | fe->i_gid = cpu_to_le32(i_gid_read(inode)); | |
f5d36202 TY |
559 | fe->i_mode = cpu_to_le16(inode->i_mode); |
560 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 561 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
198a1ca3 MF |
562 | |
563 | ocfs2_set_links_count(fe, inode->i_nlink); | |
ccd979bd MF |
564 | |
565 | fe->i_last_eb_blk = 0; | |
566 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
13eb9887 | 567 | fe->i_flags |= cpu_to_le32(OCFS2_VALID_FL); |
c62c38f6 | 568 | ktime_get_real_ts64(&ts); |
ccd979bd | 569 | fe->i_atime = fe->i_ctime = fe->i_mtime = |
c62c38f6 | 570 | cpu_to_le64(ts.tv_sec); |
ccd979bd | 571 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = |
c62c38f6 | 572 | cpu_to_le32(ts.tv_nsec); |
ccd979bd MF |
573 | fe->i_dtime = 0; |
574 | ||
5b6a3a2b | 575 | /* |
9b7895ef MF |
576 | * If supported, directories start with inline data. If inline |
577 | * isn't supported, but indexing is, we start them as indexed. | |
5b6a3a2b | 578 | */ |
9b7895ef | 579 | feat = le16_to_cpu(fe->i_dyn_features); |
f5d36202 | 580 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
581 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
582 | ||
d9ae49d6 TY |
583 | fe->id2.i_data.id_count = cpu_to_le16( |
584 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); | |
5b6a3a2b MF |
585 | } else { |
586 | fel = &fe->id2.i_list; | |
587 | fel->l_tree_depth = 0; | |
588 | fel->l_next_free_rec = 0; | |
589 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
590 | } | |
ccd979bd | 591 | |
ec20cec7 | 592 | ocfs2_journal_dirty(handle, *new_fe_bh); |
ccd979bd | 593 | |
b657c95c | 594 | ocfs2_populate_inode(inode, fe, 1); |
0cf2f763 | 595 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
c271c5c2 SM |
596 | if (!ocfs2_mount_local(osb)) { |
597 | status = ocfs2_create_new_inode_locks(inode); | |
598 | if (status < 0) | |
599 | mlog_errno(status); | |
600 | } | |
ccd979bd | 601 | |
25b69918 | 602 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
2931cdcb | 603 | |
ccd979bd MF |
604 | leave: |
605 | if (status < 0) { | |
606 | if (*new_fe_bh) { | |
607 | brelse(*new_fe_bh); | |
608 | *new_fe_bh = NULL; | |
609 | } | |
ccd979bd MF |
610 | } |
611 | ||
c1e8d35e TM |
612 | if (status) |
613 | mlog_errno(status); | |
ccd979bd MF |
614 | return status; |
615 | } | |
616 | ||
021960ca MF |
617 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
618 | struct inode *dir, | |
619 | struct inode *inode, | |
620 | dev_t dev, | |
621 | struct buffer_head **new_fe_bh, | |
622 | struct buffer_head *parent_fe_bh, | |
623 | handle_t *handle, | |
624 | struct ocfs2_alloc_context *inode_ac) | |
625 | { | |
626 | int status = 0; | |
627 | u64 suballoc_loc, fe_blkno = 0; | |
628 | u16 suballoc_bit; | |
629 | ||
630 | *new_fe_bh = NULL; | |
631 | ||
632 | status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh, | |
633 | inode_ac, &suballoc_loc, | |
634 | &suballoc_bit, &fe_blkno); | |
635 | if (status < 0) { | |
636 | mlog_errno(status); | |
637 | return status; | |
638 | } | |
639 | ||
759a7c61 | 640 | return __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh, |
021960ca MF |
641 | parent_fe_bh, handle, inode_ac, |
642 | fe_blkno, suballoc_loc, suballoc_bit); | |
643 | } | |
644 | ||
549c7297 CB |
645 | static int ocfs2_mkdir(struct user_namespace *mnt_userns, |
646 | struct inode *dir, | |
ccd979bd | 647 | struct dentry *dentry, |
18bb1db3 | 648 | umode_t mode) |
ccd979bd MF |
649 | { |
650 | int ret; | |
651 | ||
8990e44a TM |
652 | trace_ocfs2_mkdir(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
653 | OCFS2_I(dir)->ip_blkno, mode); | |
549c7297 | 654 | ret = ocfs2_mknod(&init_user_ns, dir, dentry, mode | S_IFDIR, 0); |
c1e8d35e TM |
655 | if (ret) |
656 | mlog_errno(ret); | |
ccd979bd MF |
657 | |
658 | return ret; | |
659 | } | |
660 | ||
549c7297 CB |
661 | static int ocfs2_create(struct user_namespace *mnt_userns, |
662 | struct inode *dir, | |
ccd979bd | 663 | struct dentry *dentry, |
4acdaf27 | 664 | umode_t mode, |
ebfc3b49 | 665 | bool excl) |
ccd979bd MF |
666 | { |
667 | int ret; | |
668 | ||
8990e44a TM |
669 | trace_ocfs2_create(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
670 | (unsigned long long)OCFS2_I(dir)->ip_blkno, mode); | |
549c7297 | 671 | ret = ocfs2_mknod(&init_user_ns, dir, dentry, mode | S_IFREG, 0); |
c1e8d35e TM |
672 | if (ret) |
673 | mlog_errno(ret); | |
ccd979bd MF |
674 | |
675 | return ret; | |
676 | } | |
677 | ||
678 | static int ocfs2_link(struct dentry *old_dentry, | |
679 | struct inode *dir, | |
680 | struct dentry *dentry) | |
681 | { | |
1fabe148 | 682 | handle_t *handle; |
2b0143b5 DH |
683 | struct inode *inode = d_inode(old_dentry); |
684 | struct inode *old_dir = d_inode(old_dentry->d_parent); | |
ccd979bd MF |
685 | int err; |
686 | struct buffer_head *fe_bh = NULL; | |
53dc20b9 | 687 | struct buffer_head *old_dir_bh = NULL; |
ccd979bd | 688 | struct buffer_head *parent_fe_bh = NULL; |
ccd979bd MF |
689 | struct ocfs2_dinode *fe = NULL; |
690 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
4a12ca3a | 691 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 | 692 | sigset_t oldset; |
0e048316 | 693 | u64 old_de_ino; |
ccd979bd | 694 | |
8990e44a TM |
695 | trace_ocfs2_link((unsigned long long)OCFS2_I(inode)->ip_blkno, |
696 | old_dentry->d_name.len, old_dentry->d_name.name, | |
697 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 698 | |
123a9643 MF |
699 | if (S_ISDIR(inode->i_mode)) |
700 | return -EPERM; | |
ccd979bd | 701 | |
9c89fe0a JK |
702 | err = dquot_initialize(dir); |
703 | if (err) { | |
704 | mlog_errno(err); | |
705 | return err; | |
706 | } | |
907f4554 | 707 | |
53dc20b9 X |
708 | err = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
709 | &parent_fe_bh, dir, 0); | |
ccd979bd MF |
710 | if (err < 0) { |
711 | if (err != -ENOENT) | |
712 | mlog_errno(err); | |
123a9643 | 713 | return err; |
ccd979bd MF |
714 | } |
715 | ||
53dc20b9 X |
716 | /* make sure both dirs have bhs |
717 | * get an extra ref on old_dir_bh if old==new */ | |
718 | if (!parent_fe_bh) { | |
719 | if (old_dir_bh) { | |
720 | parent_fe_bh = old_dir_bh; | |
721 | get_bh(parent_fe_bh); | |
722 | } else { | |
723 | mlog(ML_ERROR, "%s: no old_dir_bh!\n", osb->uuid_str); | |
724 | err = -EIO; | |
725 | goto out; | |
726 | } | |
727 | } | |
728 | ||
0f62de2c TY |
729 | if (!dir->i_nlink) { |
730 | err = -ENOENT; | |
123a9643 | 731 | goto out; |
0f62de2c TY |
732 | } |
733 | ||
53dc20b9 | 734 | err = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
0e048316 X |
735 | old_dentry->d_name.len, &old_de_ino); |
736 | if (err) { | |
737 | err = -ENOENT; | |
738 | goto out; | |
739 | } | |
740 | ||
741 | /* | |
742 | * Check whether another node removed the source inode while we | |
743 | * were in the vfs. | |
744 | */ | |
745 | if (old_de_ino != OCFS2_I(inode)->ip_blkno) { | |
746 | err = -ENOENT; | |
747 | goto out; | |
748 | } | |
749 | ||
ccd979bd MF |
750 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
751 | dentry->d_name.len); | |
752 | if (err) | |
123a9643 | 753 | goto out; |
ccd979bd MF |
754 | |
755 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
756 | dentry->d_name.name, | |
4a12ca3a | 757 | dentry->d_name.len, &lookup); |
ccd979bd MF |
758 | if (err < 0) { |
759 | mlog_errno(err); | |
123a9643 | 760 | goto out; |
ccd979bd MF |
761 | } |
762 | ||
e63aecb6 | 763 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
764 | if (err < 0) { |
765 | if (err != -ENOENT) | |
766 | mlog_errno(err); | |
123a9643 | 767 | goto out; |
ccd979bd MF |
768 | } |
769 | ||
770 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
198a1ca3 | 771 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
ccd979bd | 772 | err = -EMLINK; |
123a9643 | 773 | goto out_unlock_inode; |
ccd979bd MF |
774 | } |
775 | ||
a90714c1 | 776 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
777 | if (IS_ERR(handle)) { |
778 | err = PTR_ERR(handle); | |
779 | handle = NULL; | |
780 | mlog_errno(err); | |
123a9643 | 781 | goto out_unlock_inode; |
ccd979bd MF |
782 | } |
783 | ||
547ba7c8 JB |
784 | /* Starting to change things, restart is no longer possible. */ |
785 | ocfs2_block_signals(&oldset); | |
786 | ||
0cf2f763 | 787 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 788 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
789 | if (err < 0) { |
790 | mlog_errno(err); | |
123a9643 | 791 | goto out_commit; |
ccd979bd MF |
792 | } |
793 | ||
d8c76e6f | 794 | inc_nlink(inode); |
078cd827 | 795 | inode->i_ctime = current_time(inode); |
198a1ca3 | 796 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
797 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
798 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
ec20cec7 | 799 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd MF |
800 | |
801 | err = ocfs2_add_entry(handle, dentry, inode, | |
802 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 803 | parent_fe_bh, &lookup); |
ccd979bd | 804 | if (err) { |
198a1ca3 | 805 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 806 | drop_nlink(inode); |
ccd979bd | 807 | mlog_errno(err); |
123a9643 | 808 | goto out_commit; |
ccd979bd MF |
809 | } |
810 | ||
0027dd5b | 811 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
812 | if (err) { |
813 | mlog_errno(err); | |
123a9643 | 814 | goto out_commit; |
379dfe9d MF |
815 | } |
816 | ||
7de9c6ee | 817 | ihold(inode); |
ccd979bd | 818 | d_instantiate(dentry, inode); |
123a9643 MF |
819 | |
820 | out_commit: | |
02dc1af4 | 821 | ocfs2_commit_trans(osb, handle); |
547ba7c8 | 822 | ocfs2_unblock_signals(&oldset); |
123a9643 | 823 | out_unlock_inode: |
e63aecb6 | 824 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
825 | |
826 | out: | |
53dc20b9 | 827 | ocfs2_double_unlock(old_dir, dir); |
123a9643 | 828 | |
a81cb88b MF |
829 | brelse(fe_bh); |
830 | brelse(parent_fe_bh); | |
53dc20b9 | 831 | brelse(old_dir_bh); |
ccd979bd | 832 | |
4a12ca3a MF |
833 | ocfs2_free_dir_lookup_result(&lookup); |
834 | ||
c1e8d35e TM |
835 | if (err) |
836 | mlog_errno(err); | |
ccd979bd MF |
837 | |
838 | return err; | |
839 | } | |
840 | ||
379dfe9d MF |
841 | /* |
842 | * Takes and drops an exclusive lock on the given dentry. This will | |
843 | * force other nodes to drop it. | |
844 | */ | |
845 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
846 | { | |
847 | int ret; | |
848 | ||
849 | ret = ocfs2_dentry_lock(dentry, 1); | |
850 | if (ret) | |
851 | mlog_errno(ret); | |
852 | else | |
853 | ocfs2_dentry_unlock(dentry, 1); | |
854 | ||
855 | return ret; | |
856 | } | |
857 | ||
b5a8bb71 | 858 | static inline int ocfs2_inode_is_unlinkable(struct inode *inode) |
17ff7856 MF |
859 | { |
860 | if (S_ISDIR(inode->i_mode)) { | |
861 | if (inode->i_nlink == 2) | |
862 | return 1; | |
863 | return 0; | |
864 | } | |
865 | ||
866 | if (inode->i_nlink == 1) | |
867 | return 1; | |
868 | return 0; | |
869 | } | |
870 | ||
ccd979bd MF |
871 | static int ocfs2_unlink(struct inode *dir, |
872 | struct dentry *dentry) | |
873 | { | |
874 | int status; | |
30a4f5e8 | 875 | int child_locked = 0; |
b5a8bb71 | 876 | bool is_unlinkable = false; |
2b0143b5 | 877 | struct inode *inode = d_inode(dentry); |
5098c27b | 878 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
879 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
880 | u64 blkno; | |
881 | struct ocfs2_dinode *fe = NULL; | |
882 | struct buffer_head *fe_bh = NULL; | |
883 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 884 | handle_t *handle = NULL; |
ccd979bd | 885 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
886 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
887 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd | 888 | |
8990e44a TM |
889 | trace_ocfs2_unlink(dir, dentry, dentry->d_name.len, |
890 | dentry->d_name.name, | |
891 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
892 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 893 | |
9c89fe0a JK |
894 | status = dquot_initialize(dir); |
895 | if (status) { | |
896 | mlog_errno(status); | |
897 | return status; | |
898 | } | |
907f4554 | 899 | |
2b0143b5 | 900 | BUG_ON(d_inode(dentry->d_parent) != dir); |
ccd979bd | 901 | |
8990e44a | 902 | if (inode == osb->root_inode) |
30a4f5e8 | 903 | return -EPERM; |
ccd979bd | 904 | |
cb25797d JK |
905 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
906 | OI_LS_PARENT); | |
ccd979bd MF |
907 | if (status < 0) { |
908 | if (status != -ENOENT) | |
909 | mlog_errno(status); | |
30a4f5e8 | 910 | return status; |
ccd979bd MF |
911 | } |
912 | ||
913 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
914 | dentry->d_name.len, &blkno, dir, |
915 | &lookup); | |
ccd979bd MF |
916 | if (status < 0) { |
917 | if (status != -ENOENT) | |
918 | mlog_errno(status); | |
919 | goto leave; | |
920 | } | |
921 | ||
922 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
923 | status = -ENOENT; | |
924 | ||
8990e44a TM |
925 | trace_ocfs2_unlink_noent( |
926 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
927 | (unsigned long long)blkno, | |
928 | OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
929 | goto leave; |
930 | } | |
931 | ||
e63aecb6 | 932 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
933 | if (status < 0) { |
934 | if (status != -ENOENT) | |
935 | mlog_errno(status); | |
936 | goto leave; | |
937 | } | |
30a4f5e8 | 938 | child_locked = 1; |
ccd979bd MF |
939 | |
940 | if (S_ISDIR(inode->i_mode)) { | |
b80b549c | 941 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
ccd979bd MF |
942 | status = -ENOTEMPTY; |
943 | goto leave; | |
944 | } | |
945 | } | |
946 | ||
379dfe9d | 947 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 948 | if (status < 0) { |
34d024f8 | 949 | /* This remote delete should succeed under all normal |
ccd979bd MF |
950 | * circumstances. */ |
951 | mlog_errno(status); | |
952 | goto leave; | |
953 | } | |
954 | ||
b5a8bb71 | 955 | if (ocfs2_inode_is_unlinkable(inode)) { |
19bd341f TM |
956 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
957 | OCFS2_I(inode)->ip_blkno, | |
06ee5c75 JQ |
958 | orphan_name, &orphan_insert, |
959 | false); | |
ccd979bd MF |
960 | if (status < 0) { |
961 | mlog_errno(status); | |
962 | goto leave; | |
963 | } | |
b5a8bb71 | 964 | is_unlinkable = true; |
ccd979bd MF |
965 | } |
966 | ||
a90714c1 | 967 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
968 | if (IS_ERR(handle)) { |
969 | status = PTR_ERR(handle); | |
970 | handle = NULL; | |
971 | mlog_errno(status); | |
972 | goto leave; | |
973 | } | |
974 | ||
0cf2f763 | 975 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 976 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
977 | if (status < 0) { |
978 | mlog_errno(status); | |
979 | goto leave; | |
980 | } | |
981 | ||
982 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
983 | ||
ccd979bd | 984 | /* delete the name from the parent dir */ |
4a12ca3a | 985 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
986 | if (status < 0) { |
987 | mlog_errno(status); | |
988 | goto leave; | |
989 | } | |
990 | ||
17ff7856 MF |
991 | if (S_ISDIR(inode->i_mode)) |
992 | drop_nlink(inode); | |
993 | drop_nlink(inode); | |
198a1ca3 | 994 | ocfs2_set_links_count(fe, inode->i_nlink); |
ec20cec7 | 995 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd | 996 | |
078cd827 | 997 | dir->i_ctime = dir->i_mtime = current_time(dir); |
592282cf | 998 | if (S_ISDIR(inode->i_mode)) |
17ff7856 | 999 | drop_nlink(dir); |
592282cf MF |
1000 | |
1001 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
1002 | if (status < 0) { | |
1003 | mlog_errno(status); | |
1004 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 1005 | inc_nlink(dir); |
b5a8bb71 YL |
1006 | goto leave; |
1007 | } | |
1008 | ||
1009 | if (is_unlinkable) { | |
1010 | status = ocfs2_orphan_add(osb, handle, inode, fe_bh, | |
06ee5c75 | 1011 | orphan_name, &orphan_insert, orphan_dir, false); |
b5a8bb71 YL |
1012 | if (status < 0) |
1013 | mlog_errno(status); | |
ccd979bd MF |
1014 | } |
1015 | ||
1016 | leave: | |
ccd979bd | 1017 | if (handle) |
02dc1af4 | 1018 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1019 | |
5098c27b MF |
1020 | if (orphan_dir) { |
1021 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1022 | ocfs2_inode_unlock(orphan_dir, 1); |
5955102c | 1023 | inode_unlock(orphan_dir); |
5098c27b MF |
1024 | iput(orphan_dir); |
1025 | } | |
1026 | ||
3cb2ec43 JQ |
1027 | if (child_locked) |
1028 | ocfs2_inode_unlock(inode, 1); | |
1029 | ||
1030 | ocfs2_inode_unlock(dir, 1); | |
1031 | ||
a81cb88b | 1032 | brelse(fe_bh); |
a81cb88b | 1033 | brelse(parent_node_bh); |
4a12ca3a MF |
1034 | |
1035 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1036 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd | 1037 | |
f5b25855 | 1038 | if (status && (status != -ENOTEMPTY) && (status != -ENOENT)) |
c1e8d35e | 1039 | mlog_errno(status); |
ccd979bd MF |
1040 | |
1041 | return status; | |
1042 | } | |
1043 | ||
f7a14f32 YJ |
1044 | static int ocfs2_check_if_ancestor(struct ocfs2_super *osb, |
1045 | u64 src_inode_no, u64 dest_inode_no) | |
1046 | { | |
1047 | int ret = 0, i = 0; | |
1048 | u64 parent_inode_no = 0; | |
1049 | u64 child_inode_no = src_inode_no; | |
1050 | struct inode *child_inode; | |
1051 | ||
1052 | #define MAX_LOOKUP_TIMES 32 | |
1053 | while (1) { | |
1054 | child_inode = ocfs2_iget(osb, child_inode_no, 0, 0); | |
1055 | if (IS_ERR(child_inode)) { | |
1056 | ret = PTR_ERR(child_inode); | |
1057 | break; | |
1058 | } | |
1059 | ||
1060 | ret = ocfs2_inode_lock(child_inode, NULL, 0); | |
1061 | if (ret < 0) { | |
1062 | iput(child_inode); | |
1063 | if (ret != -ENOENT) | |
1064 | mlog_errno(ret); | |
1065 | break; | |
1066 | } | |
1067 | ||
1068 | ret = ocfs2_lookup_ino_from_name(child_inode, "..", 2, | |
1069 | &parent_inode_no); | |
1070 | ocfs2_inode_unlock(child_inode, 0); | |
1071 | iput(child_inode); | |
1072 | if (ret < 0) { | |
1073 | ret = -ENOENT; | |
1074 | break; | |
1075 | } | |
1076 | ||
1077 | if (parent_inode_no == dest_inode_no) { | |
1078 | ret = 1; | |
1079 | break; | |
1080 | } | |
1081 | ||
1082 | if (parent_inode_no == osb->root_inode->i_ino) { | |
1083 | ret = 0; | |
1084 | break; | |
1085 | } | |
1086 | ||
1087 | child_inode_no = parent_inode_no; | |
1088 | ||
1089 | if (++i >= MAX_LOOKUP_TIMES) { | |
45680967 MFO |
1090 | mlog_ratelimited(ML_NOTICE, "max lookup times reached, " |
1091 | "filesystem may have nested directories, " | |
f7a14f32 YJ |
1092 | "src inode: %llu, dest inode: %llu.\n", |
1093 | (unsigned long long)src_inode_no, | |
1094 | (unsigned long long)dest_inode_no); | |
1095 | ret = 0; | |
1096 | break; | |
1097 | } | |
1098 | } | |
1099 | ||
1100 | return ret; | |
1101 | } | |
1102 | ||
ccd979bd | 1103 | /* |
53dc20b9 | 1104 | * The only place this should be used is rename and link! |
ccd979bd MF |
1105 | * if they have the same id, then the 1st one is the only one locked. |
1106 | */ | |
1107 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
1108 | struct buffer_head **bh1, |
1109 | struct inode *inode1, | |
1110 | struct buffer_head **bh2, | |
53dc20b9 X |
1111 | struct inode *inode2, |
1112 | int rename) | |
ccd979bd MF |
1113 | { |
1114 | int status; | |
f7a14f32 | 1115 | int inode1_is_ancestor, inode2_is_ancestor; |
ccd979bd MF |
1116 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); |
1117 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
ccd979bd | 1118 | |
8990e44a TM |
1119 | trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno, |
1120 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 1121 | |
ccd979bd MF |
1122 | if (*bh1) |
1123 | *bh1 = NULL; | |
1124 | if (*bh2) | |
1125 | *bh2 = NULL; | |
1126 | ||
f7a14f32 YJ |
1127 | /* we always want to lock the one with the lower lockid first. |
1128 | * and if they are nested, we lock ancestor first */ | |
ccd979bd | 1129 | if (oi1->ip_blkno != oi2->ip_blkno) { |
f7a14f32 YJ |
1130 | inode1_is_ancestor = ocfs2_check_if_ancestor(osb, oi2->ip_blkno, |
1131 | oi1->ip_blkno); | |
1132 | if (inode1_is_ancestor < 0) { | |
1133 | status = inode1_is_ancestor; | |
1134 | goto bail; | |
1135 | } | |
1136 | ||
1137 | inode2_is_ancestor = ocfs2_check_if_ancestor(osb, oi1->ip_blkno, | |
1138 | oi2->ip_blkno); | |
1139 | if (inode2_is_ancestor < 0) { | |
1140 | status = inode2_is_ancestor; | |
1141 | goto bail; | |
1142 | } | |
1143 | ||
1144 | if ((inode1_is_ancestor == 1) || | |
1145 | (oi1->ip_blkno < oi2->ip_blkno && | |
1146 | inode2_is_ancestor == 0)) { | |
ccd979bd | 1147 | /* switch id1 and id2 around */ |
ab1ba021 FF |
1148 | swap(bh2, bh1); |
1149 | swap(inode2, inode1); | |
ccd979bd MF |
1150 | } |
1151 | /* lock id2 */ | |
cb25797d | 1152 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
53dc20b9 | 1153 | rename == 1 ? OI_LS_RENAME1 : OI_LS_PARENT); |
ccd979bd MF |
1154 | if (status < 0) { |
1155 | if (status != -ENOENT) | |
1156 | mlog_errno(status); | |
1157 | goto bail; | |
1158 | } | |
1159 | } | |
8d5596c6 | 1160 | |
ccd979bd | 1161 | /* lock id1 */ |
53dc20b9 X |
1162 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, |
1163 | rename == 1 ? OI_LS_RENAME2 : OI_LS_PARENT); | |
ccd979bd | 1164 | if (status < 0) { |
8d5596c6 MF |
1165 | /* |
1166 | * An error return must mean that no cluster locks | |
1167 | * were held on function exit. | |
1168 | */ | |
1e6d9153 | 1169 | if (oi1->ip_blkno != oi2->ip_blkno) { |
e63aecb6 | 1170 | ocfs2_inode_unlock(inode2, 1); |
1e6d9153 TM |
1171 | brelse(*bh2); |
1172 | *bh2 = NULL; | |
1173 | } | |
8d5596c6 | 1174 | |
ccd979bd MF |
1175 | if (status != -ENOENT) |
1176 | mlog_errno(status); | |
ccd979bd | 1177 | } |
8d5596c6 | 1178 | |
8990e44a | 1179 | trace_ocfs2_double_lock_end( |
d324cd4c | 1180 | (unsigned long long)oi1->ip_blkno, |
1181 | (unsigned long long)oi2->ip_blkno); | |
8990e44a | 1182 | |
ccd979bd | 1183 | bail: |
c1e8d35e TM |
1184 | if (status) |
1185 | mlog_errno(status); | |
ccd979bd MF |
1186 | return status; |
1187 | } | |
1188 | ||
8d5596c6 MF |
1189 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
1190 | { | |
e63aecb6 | 1191 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
1192 | |
1193 | if (inode1 != inode2) | |
e63aecb6 | 1194 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1195 | } |
1196 | ||
549c7297 CB |
1197 | static int ocfs2_rename(struct user_namespace *mnt_userns, |
1198 | struct inode *old_dir, | |
ccd979bd MF |
1199 | struct dentry *old_dentry, |
1200 | struct inode *new_dir, | |
1cd66c93 MS |
1201 | struct dentry *new_dentry, |
1202 | unsigned int flags) | |
ccd979bd | 1203 | { |
4a12ca3a MF |
1204 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1205 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
2b0143b5 DH |
1206 | struct inode *old_inode = d_inode(old_dentry); |
1207 | struct inode *new_inode = d_inode(new_dentry); | |
5098c27b | 1208 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1209 | struct ocfs2_dinode *newfe = NULL; |
1210 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
ccd979bd | 1211 | struct buffer_head *newfe_bh = NULL; |
592282cf | 1212 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd | 1213 | struct ocfs2_super *osb = NULL; |
5b6a3a2b | 1214 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1215 | handle_t *handle = NULL; |
ccd979bd MF |
1216 | struct buffer_head *old_dir_bh = NULL; |
1217 | struct buffer_head *new_dir_bh = NULL; | |
847c9db5 | 1218 | u32 old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1219 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1220 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1221 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1222 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1223 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1224 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
5fb1beb0 | 1225 | bool should_add_orphan = false; |
ccd979bd | 1226 | |
1cd66c93 MS |
1227 | if (flags) |
1228 | return -EINVAL; | |
1229 | ||
ccd979bd MF |
1230 | /* At some point it might be nice to break this function up a |
1231 | * bit. */ | |
1232 | ||
8990e44a TM |
1233 | trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry, |
1234 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1235 | new_dentry->d_name.len, new_dentry->d_name.name); | |
ccd979bd | 1236 | |
9c89fe0a JK |
1237 | status = dquot_initialize(old_dir); |
1238 | if (status) { | |
1239 | mlog_errno(status); | |
1240 | goto bail; | |
1241 | } | |
1242 | status = dquot_initialize(new_dir); | |
1243 | if (status) { | |
1244 | mlog_errno(status); | |
1245 | goto bail; | |
1246 | } | |
907f4554 | 1247 | |
ccd979bd MF |
1248 | osb = OCFS2_SB(old_dir->i_sb); |
1249 | ||
1250 | if (new_inode) { | |
1251 | if (!igrab(new_inode)) | |
1252 | BUG(); | |
1253 | } | |
1254 | ||
1b3c3714 | 1255 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1256 | * a/b/c |
1257 | * a/d | |
1258 | * a,b,c, and d are all directories. | |
1259 | * | |
1260 | * from cwd of 'a' on both nodes: | |
1261 | * node1: mv b/c d | |
1262 | * node2: mv d b/c | |
1263 | * | |
1264 | * And that's why, just like the VFS, we need a file system | |
1265 | * rename lock. */ | |
5dabd695 | 1266 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1267 | status = ocfs2_rename_lock(osb); |
1268 | if (status < 0) { | |
1269 | mlog_errno(status); | |
1270 | goto bail; | |
1271 | } | |
1272 | rename_lock = 1; | |
f7a14f32 YJ |
1273 | |
1274 | /* here we cannot guarantee the inodes haven't just been | |
1275 | * changed, so check if they are nested again */ | |
1276 | status = ocfs2_check_if_ancestor(osb, new_dir->i_ino, | |
1277 | old_inode->i_ino); | |
1278 | if (status < 0) { | |
1279 | mlog_errno(status); | |
1280 | goto bail; | |
1281 | } else if (status == 1) { | |
1282 | status = -EPERM; | |
1283 | trace_ocfs2_rename_not_permitted( | |
1284 | (unsigned long long)old_inode->i_ino, | |
1285 | (unsigned long long)new_dir->i_ino); | |
1286 | goto bail; | |
1287 | } | |
ccd979bd MF |
1288 | } |
1289 | ||
ccd979bd | 1290 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 | 1291 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
53dc20b9 | 1292 | &new_dir_bh, new_dir, 1); |
ccd979bd MF |
1293 | if (status < 0) { |
1294 | mlog_errno(status); | |
1295 | goto bail; | |
1296 | } | |
8d5596c6 | 1297 | parents_locked = 1; |
ccd979bd | 1298 | |
928dda1f YJ |
1299 | if (!new_dir->i_nlink) { |
1300 | status = -EACCES; | |
1301 | goto bail; | |
1302 | } | |
1303 | ||
ccd979bd MF |
1304 | /* make sure both dirs have bhs |
1305 | * get an extra ref on old_dir_bh if old==new */ | |
1306 | if (!new_dir_bh) { | |
1307 | if (old_dir_bh) { | |
1308 | new_dir_bh = old_dir_bh; | |
1309 | get_bh(new_dir_bh); | |
1310 | } else { | |
1311 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1312 | status = -EIO; | |
1313 | goto bail; | |
1314 | } | |
1315 | } | |
1316 | ||
379dfe9d | 1317 | /* |
592282cf | 1318 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1319 | * also ensures that the downconvert thread on other nodes |
1320 | * won't have to concurrently downconvert the inode and the | |
1321 | * dentry locks. | |
379dfe9d | 1322 | */ |
cb25797d JK |
1323 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
1324 | OI_LS_PARENT); | |
379dfe9d MF |
1325 | if (status < 0) { |
1326 | if (status != -ENOENT) | |
ccd979bd | 1327 | mlog_errno(status); |
379dfe9d MF |
1328 | goto bail; |
1329 | } | |
8d5596c6 | 1330 | old_child_locked = 1; |
ccd979bd | 1331 | |
379dfe9d MF |
1332 | status = ocfs2_remote_dentry_delete(old_dentry); |
1333 | if (status < 0) { | |
1334 | mlog_errno(status); | |
1335 | goto bail; | |
1336 | } | |
1337 | ||
1338 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1339 | u64 old_inode_parent; |
1340 | ||
4a12ca3a | 1341 | update_dot_dot = 1; |
38760e24 | 1342 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1343 | old_inode, |
1344 | &old_inode_dot_dot_res); | |
38760e24 MF |
1345 | if (status) { |
1346 | status = -EIO; | |
ccd979bd | 1347 | goto bail; |
38760e24 | 1348 | } |
ccd979bd | 1349 | |
38760e24 MF |
1350 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1351 | status = -EIO; | |
ccd979bd | 1352 | goto bail; |
38760e24 MF |
1353 | } |
1354 | ||
1355 | if (!new_inode && new_dir != old_dir && | |
198a1ca3 | 1356 | new_dir->i_nlink >= ocfs2_link_max(osb)) { |
38760e24 | 1357 | status = -EMLINK; |
ccd979bd | 1358 | goto bail; |
38760e24 | 1359 | } |
ccd979bd MF |
1360 | } |
1361 | ||
5b6a3a2b MF |
1362 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1363 | old_dentry->d_name.len, | |
1364 | &old_de_ino); | |
1365 | if (status) { | |
1366 | status = -ENOENT; | |
ccd979bd | 1367 | goto bail; |
5b6a3a2b | 1368 | } |
ccd979bd MF |
1369 | |
1370 | /* | |
1371 | * Check for inode number is _not_ due to possible IO errors. | |
1372 | * We might rmdir the source, keep it as pwd of some process | |
1373 | * and merrily kill the link to whatever was created under the | |
1374 | * same name. Goodbye sticky bit ;-< | |
1375 | */ | |
5b6a3a2b MF |
1376 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1377 | status = -ENOENT; | |
ccd979bd | 1378 | goto bail; |
5b6a3a2b | 1379 | } |
ccd979bd MF |
1380 | |
1381 | /* check if the target already exists (in which case we need | |
1382 | * to delete it */ | |
1383 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1384 | new_dentry->d_name.len, | |
4a12ca3a MF |
1385 | &newfe_blkno, new_dir, |
1386 | &target_lookup_res); | |
ccd979bd MF |
1387 | /* The only error we allow here is -ENOENT because the new |
1388 | * file not existing is perfectly valid. */ | |
1389 | if ((status < 0) && (status != -ENOENT)) { | |
1390 | /* If we cannot find the file specified we should just */ | |
1391 | /* return the error... */ | |
1392 | mlog_errno(status); | |
1393 | goto bail; | |
1394 | } | |
4a12ca3a MF |
1395 | if (status == 0) |
1396 | target_exists = 1; | |
ccd979bd | 1397 | |
4a12ca3a | 1398 | if (!target_exists && new_inode) { |
e325a88f SE |
1399 | /* |
1400 | * Target was unlinked by another node while we were | |
1401 | * waiting to get to ocfs2_rename(). There isn't | |
1402 | * anything we can do here to help the situation, so | |
1403 | * bubble up the appropriate error. | |
1404 | */ | |
1405 | status = -ENOENT; | |
1406 | goto bail; | |
1407 | } | |
ccd979bd MF |
1408 | |
1409 | /* In case we need to overwrite an existing file, we blow it | |
1410 | * away first */ | |
4a12ca3a | 1411 | if (target_exists) { |
ccd979bd MF |
1412 | /* VFS didn't think there existed an inode here, but |
1413 | * someone else in the cluster must have raced our | |
1414 | * rename to create one. Today we error cleanly, in | |
1415 | * the future we should consider calling iget to build | |
1416 | * a new struct inode for this entry. */ | |
1417 | if (!new_inode) { | |
1418 | status = -EACCES; | |
1419 | ||
8990e44a TM |
1420 | trace_ocfs2_rename_target_exists(new_dentry->d_name.len, |
1421 | new_dentry->d_name.name); | |
ccd979bd MF |
1422 | goto bail; |
1423 | } | |
1424 | ||
1425 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1426 | status = -EACCES; | |
1427 | ||
8990e44a | 1428 | trace_ocfs2_rename_disagree( |
b0697053 MF |
1429 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, |
1430 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1431 | OCFS2_I(new_inode)->ip_flags); |
1432 | goto bail; | |
1433 | } | |
1434 | ||
e63aecb6 | 1435 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1436 | if (status < 0) { |
1437 | if (status != -ENOENT) | |
1438 | mlog_errno(status); | |
1439 | goto bail; | |
1440 | } | |
8d5596c6 | 1441 | new_child_locked = 1; |
ccd979bd | 1442 | |
379dfe9d | 1443 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1444 | if (status < 0) { |
1445 | mlog_errno(status); | |
1446 | goto bail; | |
1447 | } | |
1448 | ||
1449 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1450 | ||
8990e44a | 1451 | trace_ocfs2_rename_over_existing( |
b0697053 | 1452 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1453 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1454 | ||
1455 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1456 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
19bd341f | 1457 | OCFS2_I(new_inode)->ip_blkno, |
06ee5c75 JQ |
1458 | orphan_name, &orphan_insert, |
1459 | false); | |
ccd979bd MF |
1460 | if (status < 0) { |
1461 | mlog_errno(status); | |
1462 | goto bail; | |
1463 | } | |
5fb1beb0 | 1464 | should_add_orphan = true; |
ccd979bd MF |
1465 | } |
1466 | } else { | |
2b0143b5 | 1467 | BUG_ON(d_inode(new_dentry->d_parent) != new_dir); |
ccd979bd MF |
1468 | |
1469 | status = ocfs2_check_dir_for_entry(new_dir, | |
1470 | new_dentry->d_name.name, | |
1471 | new_dentry->d_name.len); | |
1472 | if (status) | |
1473 | goto bail; | |
1474 | ||
1475 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1476 | new_dentry->d_name.name, | |
1477 | new_dentry->d_name.len, | |
4a12ca3a | 1478 | &target_insert); |
ccd979bd MF |
1479 | if (status < 0) { |
1480 | mlog_errno(status); | |
1481 | goto bail; | |
1482 | } | |
1483 | } | |
1484 | ||
a90714c1 | 1485 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1486 | if (IS_ERR(handle)) { |
1487 | status = PTR_ERR(handle); | |
1488 | handle = NULL; | |
1489 | mlog_errno(status); | |
1490 | goto bail; | |
1491 | } | |
1492 | ||
4a12ca3a | 1493 | if (target_exists) { |
ccd979bd | 1494 | if (S_ISDIR(new_inode->i_mode)) { |
b80b549c MF |
1495 | if (new_inode->i_nlink != 2 || |
1496 | !ocfs2_empty_dir(new_inode)) { | |
ccd979bd MF |
1497 | status = -ENOTEMPTY; |
1498 | goto bail; | |
1499 | } | |
1500 | } | |
0cf2f763 JB |
1501 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
1502 | newfe_bh, | |
13723d00 | 1503 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1504 | if (status < 0) { |
1505 | mlog_errno(status); | |
1506 | goto bail; | |
1507 | } | |
1508 | ||
ccd979bd | 1509 | /* change the dirent to point to the correct inode */ |
4a12ca3a MF |
1510 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1511 | old_inode); | |
ccd979bd MF |
1512 | if (status < 0) { |
1513 | mlog_errno(status); | |
1514 | goto bail; | |
1515 | } | |
cc56c33e | 1516 | inode_inc_iversion(new_dir); |
ccd979bd MF |
1517 | |
1518 | if (S_ISDIR(new_inode->i_mode)) | |
198a1ca3 | 1519 | ocfs2_set_links_count(newfe, 0); |
ccd979bd | 1520 | else |
198a1ca3 | 1521 | ocfs2_add_links_count(newfe, -1); |
ec20cec7 | 1522 | ocfs2_journal_dirty(handle, newfe_bh); |
5fb1beb0 | 1523 | if (should_add_orphan) { |
1524 | status = ocfs2_orphan_add(osb, handle, new_inode, | |
1525 | newfe_bh, orphan_name, | |
06ee5c75 | 1526 | &orphan_insert, orphan_dir, false); |
5fb1beb0 | 1527 | if (status < 0) { |
1528 | mlog_errno(status); | |
1529 | goto bail; | |
1530 | } | |
1531 | } | |
ccd979bd MF |
1532 | } else { |
1533 | /* if the name was not found in new_dir, add it now */ | |
1534 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1535 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1536 | new_dir_bh, &target_insert); |
ccd979bd MF |
1537 | } |
1538 | ||
078cd827 | 1539 | old_inode->i_ctime = current_time(old_inode); |
ccd979bd | 1540 | mark_inode_dirty(old_inode); |
480214d7 | 1541 | |
0cf2f763 JB |
1542 | status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), |
1543 | old_inode_bh, | |
13723d00 | 1544 | OCFS2_JOURNAL_ACCESS_WRITE); |
480214d7 SM |
1545 | if (status >= 0) { |
1546 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1547 | ||
1548 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); | |
1549 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); | |
ec20cec7 | 1550 | ocfs2_journal_dirty(handle, old_inode_bh); |
480214d7 SM |
1551 | } else |
1552 | mlog_errno(status); | |
ccd979bd | 1553 | |
5b6a3a2b MF |
1554 | /* |
1555 | * Now that the name has been added to new_dir, remove the old name. | |
1556 | * | |
1557 | * We don't keep any directory entry context around until now | |
1558 | * because the insert might have changed the type of directory | |
1559 | * we're dealing with. | |
1560 | */ | |
4a12ca3a MF |
1561 | status = ocfs2_find_entry(old_dentry->d_name.name, |
1562 | old_dentry->d_name.len, old_dir, | |
1563 | &old_entry_lookup); | |
807a7907 | 1564 | if (status) { |
1565 | if (!is_journal_aborted(osb->journal->j_journal)) { | |
1566 | ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " | |
1567 | "is not deleted.", | |
1568 | new_dentry->d_name.len, new_dentry->d_name.name, | |
1569 | old_dentry->d_name.len, old_dentry->d_name.name); | |
1570 | } | |
5b6a3a2b | 1571 | goto bail; |
807a7907 | 1572 | } |
5b6a3a2b | 1573 | |
4a12ca3a | 1574 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
ccd979bd MF |
1575 | if (status < 0) { |
1576 | mlog_errno(status); | |
807a7907 | 1577 | if (!is_journal_aborted(osb->journal->j_journal)) { |
1578 | ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " | |
1579 | "is not deleted.", | |
1580 | new_dentry->d_name.len, new_dentry->d_name.name, | |
1581 | old_dentry->d_name.len, old_dentry->d_name.name); | |
1582 | } | |
ccd979bd MF |
1583 | goto bail; |
1584 | } | |
1585 | ||
1586 | if (new_inode) { | |
6d6b77f1 | 1587 | drop_nlink(new_inode); |
078cd827 | 1588 | new_inode->i_ctime = current_time(new_inode); |
ccd979bd | 1589 | } |
078cd827 | 1590 | old_dir->i_ctime = old_dir->i_mtime = current_time(old_dir); |
4a12ca3a MF |
1591 | |
1592 | if (update_dot_dot) { | |
1593 | status = ocfs2_update_entry(old_inode, handle, | |
1594 | &old_inode_dot_dot_res, new_dir); | |
6d6b77f1 | 1595 | drop_nlink(old_dir); |
ccd979bd | 1596 | if (new_inode) { |
6d6b77f1 | 1597 | drop_nlink(new_inode); |
ccd979bd | 1598 | } else { |
d8c76e6f | 1599 | inc_nlink(new_dir); |
ccd979bd MF |
1600 | mark_inode_dirty(new_dir); |
1601 | } | |
1602 | } | |
1603 | mark_inode_dirty(old_dir); | |
592282cf MF |
1604 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1605 | if (new_inode) { | |
ccd979bd | 1606 | mark_inode_dirty(new_inode); |
592282cf MF |
1607 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1608 | } | |
ccd979bd | 1609 | |
592282cf MF |
1610 | if (old_dir != new_dir) { |
1611 | /* Keep the same times on both directories.*/ | |
1612 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; | |
1613 | ||
1614 | /* | |
1615 | * This will also pick up the i_nlink change from the | |
1616 | * block above. | |
1617 | */ | |
1618 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1619 | } | |
ccd979bd MF |
1620 | |
1621 | if (old_dir_nlink != old_dir->i_nlink) { | |
1622 | if (!old_dir_bh) { | |
1623 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1624 | "%llu from %d to %d but bh is NULL!\n", |
1625 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1626 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1627 | } else { |
1628 | struct ocfs2_dinode *fe; | |
0cf2f763 JB |
1629 | status = ocfs2_journal_access_di(handle, |
1630 | INODE_CACHE(old_dir), | |
1631 | old_dir_bh, | |
1632 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd | 1633 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
198a1ca3 | 1634 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
ec20cec7 | 1635 | ocfs2_journal_dirty(handle, old_dir_bh); |
ccd979bd MF |
1636 | } |
1637 | } | |
379dfe9d | 1638 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1639 | status = 0; |
1640 | bail: | |
ccd979bd | 1641 | if (handle) |
02dc1af4 | 1642 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1643 | |
5098c27b MF |
1644 | if (orphan_dir) { |
1645 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1646 | ocfs2_inode_unlock(orphan_dir, 1); |
5955102c | 1647 | inode_unlock(orphan_dir); |
5098c27b MF |
1648 | iput(orphan_dir); |
1649 | } | |
1650 | ||
3cb2ec43 JQ |
1651 | if (new_child_locked) |
1652 | ocfs2_inode_unlock(new_inode, 1); | |
1653 | ||
1654 | if (old_child_locked) | |
1655 | ocfs2_inode_unlock(old_inode, 1); | |
1656 | ||
1657 | if (parents_locked) | |
1658 | ocfs2_double_unlock(old_dir, new_dir); | |
1659 | ||
1660 | if (rename_lock) | |
1661 | ocfs2_rename_unlock(osb); | |
1662 | ||
ccd979bd MF |
1663 | if (new_inode) |
1664 | sync_mapping_buffers(old_inode->i_mapping); | |
1665 | ||
72865d92 | 1666 | iput(new_inode); |
4a12ca3a MF |
1667 | |
1668 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1669 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1670 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1671 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1672 | ocfs2_free_dir_lookup_result(&target_insert); | |
1673 | ||
a81cb88b MF |
1674 | brelse(newfe_bh); |
1675 | brelse(old_inode_bh); | |
1676 | brelse(old_dir_bh); | |
1677 | brelse(new_dir_bh); | |
ccd979bd | 1678 | |
c1e8d35e TM |
1679 | if (status) |
1680 | mlog_errno(status); | |
ccd979bd MF |
1681 | |
1682 | return status; | |
1683 | } | |
1684 | ||
1685 | /* | |
1686 | * we expect i_size = strlen(symname). Copy symname into the file | |
1687 | * data, including the null terminator. | |
1688 | */ | |
1689 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1690 | handle_t *handle, |
ccd979bd MF |
1691 | struct inode *inode, |
1692 | const char *symname) | |
1693 | { | |
1694 | struct buffer_head **bhs = NULL; | |
1695 | const char *c; | |
1696 | struct super_block *sb = osb->sb; | |
4f902c37 | 1697 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1698 | int virtual, blocks, status, i, bytes_left; |
1699 | ||
1700 | bytes_left = i_size_read(inode) + 1; | |
1701 | /* we can't trust i_blocks because we're actually going to | |
1702 | * write i_size + 1 bytes. */ | |
1703 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1704 | ||
8990e44a TM |
1705 | trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks, |
1706 | i_size_read(inode), blocks); | |
ccd979bd MF |
1707 | |
1708 | /* Sanity check -- make sure we're going to fit. */ | |
1709 | if (bytes_left > | |
1710 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1711 | status = -EIO; | |
1712 | mlog_errno(status); | |
1713 | goto bail; | |
1714 | } | |
1715 | ||
1716 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1717 | if (!bhs) { | |
1718 | status = -ENOMEM; | |
1719 | mlog_errno(status); | |
1720 | goto bail; | |
1721 | } | |
1722 | ||
49cb8d2d MF |
1723 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1724 | NULL); | |
ccd979bd MF |
1725 | if (status < 0) { |
1726 | mlog_errno(status); | |
1727 | goto bail; | |
1728 | } | |
1729 | ||
1730 | /* links can never be larger than one cluster so we know this | |
1731 | * is all going to be contiguous, but do a sanity check | |
1732 | * anyway. */ | |
1733 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1734 | status = -EIO; | |
1735 | mlog_errno(status); | |
1736 | goto bail; | |
1737 | } | |
1738 | ||
1739 | virtual = 0; | |
1740 | while(bytes_left > 0) { | |
1741 | c = &symname[virtual * sb->s_blocksize]; | |
1742 | ||
1743 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1744 | if (!bhs[virtual]) { | |
1745 | status = -ENOMEM; | |
1746 | mlog_errno(status); | |
1747 | goto bail; | |
1748 | } | |
8cb471e8 JB |
1749 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
1750 | bhs[virtual]); | |
ccd979bd | 1751 | |
0cf2f763 JB |
1752 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
1753 | bhs[virtual], | |
ccd979bd MF |
1754 | OCFS2_JOURNAL_ACCESS_CREATE); |
1755 | if (status < 0) { | |
1756 | mlog_errno(status); | |
1757 | goto bail; | |
1758 | } | |
1759 | ||
1760 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1761 | ||
1762 | memcpy(bhs[virtual]->b_data, c, | |
1763 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1764 | bytes_left); | |
1765 | ||
ec20cec7 | 1766 | ocfs2_journal_dirty(handle, bhs[virtual]); |
ccd979bd MF |
1767 | |
1768 | virtual++; | |
1769 | p_blkno++; | |
1770 | bytes_left -= sb->s_blocksize; | |
1771 | } | |
1772 | ||
1773 | status = 0; | |
1774 | bail: | |
1775 | ||
1776 | if (bhs) { | |
1777 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1778 | brelse(bhs[i]); |
ccd979bd MF |
1779 | kfree(bhs); |
1780 | } | |
1781 | ||
c1e8d35e TM |
1782 | if (status) |
1783 | mlog_errno(status); | |
ccd979bd MF |
1784 | return status; |
1785 | } | |
1786 | ||
549c7297 CB |
1787 | static int ocfs2_symlink(struct user_namespace *mnt_userns, |
1788 | struct inode *dir, | |
ccd979bd MF |
1789 | struct dentry *dentry, |
1790 | const char *symname) | |
1791 | { | |
1792 | int status, l, credits; | |
1793 | u64 newsize; | |
1794 | struct ocfs2_super *osb = NULL; | |
1795 | struct inode *inode = NULL; | |
1796 | struct super_block *sb; | |
1797 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1798 | struct buffer_head *parent_fe_bh = NULL; |
1799 | struct ocfs2_dinode *fe = NULL; | |
1800 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1801 | handle_t *handle = NULL; |
ccd979bd MF |
1802 | struct ocfs2_alloc_context *inode_ac = NULL; |
1803 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1804 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1805 | int want_clusters = 0; | |
1806 | int xattr_credits = 0; | |
1807 | struct ocfs2_security_xattr_info si = { | |
1808 | .enable = 1, | |
1809 | }; | |
a90714c1 | 1810 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1811 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
1812 | sigset_t oldset; |
1813 | int did_block_signals = 0; | |
595297a8 | 1814 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 1815 | |
8990e44a TM |
1816 | trace_ocfs2_symlink_begin(dir, dentry, symname, |
1817 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 1818 | |
9c89fe0a JK |
1819 | status = dquot_initialize(dir); |
1820 | if (status) { | |
1821 | mlog_errno(status); | |
1822 | goto bail; | |
1823 | } | |
907f4554 | 1824 | |
ccd979bd MF |
1825 | sb = dir->i_sb; |
1826 | osb = OCFS2_SB(sb); | |
1827 | ||
1828 | l = strlen(symname) + 1; | |
1829 | ||
1830 | credits = ocfs2_calc_symlink_credits(sb); | |
1831 | ||
ccd979bd | 1832 | /* lock the parent directory */ |
e63aecb6 | 1833 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1834 | if (status < 0) { |
1835 | if (status != -ENOENT) | |
1836 | mlog_errno(status); | |
6d8fc40e | 1837 | return status; |
ccd979bd MF |
1838 | } |
1839 | ||
1840 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
198a1ca3 | 1841 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
1842 | /* can't make a file in a deleted directory. */ |
1843 | status = -ENOENT; | |
1844 | goto bail; | |
1845 | } | |
1846 | ||
1847 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1848 | dentry->d_name.len); | |
1849 | if (status) | |
1850 | goto bail; | |
1851 | ||
1852 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1853 | dentry->d_name.name, | |
4a12ca3a | 1854 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1855 | if (status < 0) { |
1856 | mlog_errno(status); | |
1857 | goto bail; | |
1858 | } | |
1859 | ||
da5cbf2f | 1860 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1861 | if (status < 0) { |
1862 | if (status != -ENOSPC) | |
1863 | mlog_errno(status); | |
1864 | goto bail; | |
1865 | } | |
1866 | ||
f5d36202 | 1867 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
9c89fe0a JK |
1868 | if (IS_ERR(inode)) { |
1869 | status = PTR_ERR(inode); | |
1870 | inode = NULL; | |
f5d36202 TY |
1871 | mlog_errno(status); |
1872 | goto bail; | |
1873 | } | |
1874 | ||
534eaddd | 1875 | /* get security xattr */ |
2a7dba39 | 1876 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
1877 | if (status) { |
1878 | if (status == -EOPNOTSUPP) | |
1879 | si.enable = 0; | |
1880 | else { | |
1881 | mlog_errno(status); | |
1882 | goto bail; | |
1883 | } | |
1884 | } | |
1885 | ||
1886 | /* calculate meta data/clusters for setting security xattr */ | |
1887 | if (si.enable) { | |
1888 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1889 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1890 | if (status < 0) { |
534eaddd | 1891 | mlog_errno(status); |
ccd979bd MF |
1892 | goto bail; |
1893 | } | |
1894 | } | |
1895 | ||
534eaddd TY |
1896 | /* don't reserve bitmap space for fast symlinks. */ |
1897 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1898 | want_clusters += 1; | |
1899 | ||
1900 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1901 | if (status < 0) { | |
1902 | if (status != -ENOSPC) | |
1903 | mlog_errno(status); | |
1904 | goto bail; | |
1905 | } | |
1906 | ||
1907 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1908 | if (IS_ERR(handle)) { |
1909 | status = PTR_ERR(handle); | |
1910 | handle = NULL; | |
1911 | mlog_errno(status); | |
1912 | goto bail; | |
1913 | } | |
1914 | ||
547ba7c8 JB |
1915 | /* Starting to change things, restart is no longer possible. */ |
1916 | ocfs2_block_signals(&oldset); | |
1917 | did_block_signals = 1; | |
1918 | ||
63936dda CH |
1919 | status = dquot_alloc_inode(inode); |
1920 | if (status) | |
a90714c1 | 1921 | goto bail; |
a90714c1 JK |
1922 | did_quota_inode = 1; |
1923 | ||
8990e44a TM |
1924 | trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len, |
1925 | dentry->d_name.name, | |
1926 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
1927 | inode->i_mode); | |
19bd341f TM |
1928 | |
1929 | status = ocfs2_mknod_locked(osb, dir, inode, | |
f5d36202 TY |
1930 | 0, &new_fe_bh, parent_fe_bh, handle, |
1931 | inode_ac); | |
ccd979bd MF |
1932 | if (status < 0) { |
1933 | mlog_errno(status); | |
1934 | goto bail; | |
1935 | } | |
1936 | ||
1937 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1938 | inode->i_rdev = 0; | |
1939 | newsize = l - 1; | |
ea022dfb | 1940 | inode->i_op = &ocfs2_symlink_inode_operations; |
21fc61c7 | 1941 | inode_nohighmem(inode); |
ccd979bd | 1942 | if (l > ocfs2_fast_symlink_chars(sb)) { |
dcd0538f MF |
1943 | u32 offset = 0; |
1944 | ||
5dd4056d CH |
1945 | status = dquot_alloc_space_nodirty(inode, |
1946 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1947 | if (status) | |
a90714c1 | 1948 | goto bail; |
a90714c1 | 1949 | did_quota = 1; |
ea022dfb | 1950 | inode->i_mapping->a_ops = &ocfs2_aops; |
0eb8d47e TM |
1951 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1952 | new_fe_bh, | |
1953 | handle, data_ac, NULL, | |
1954 | NULL); | |
ccd979bd MF |
1955 | if (status < 0) { |
1956 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1957 | mlog(ML_ERROR, |
1958 | "Failed to extend file to %llu\n", | |
1959 | (unsigned long long)newsize); | |
ccd979bd MF |
1960 | mlog_errno(status); |
1961 | status = -ENOSPC; | |
1962 | } | |
1963 | goto bail; | |
1964 | } | |
1965 | i_size_write(inode, newsize); | |
8110b073 | 1966 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd | 1967 | } else { |
ea022dfb | 1968 | inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops; |
ccd979bd MF |
1969 | memcpy((char *) fe->id2.i_symlink, symname, l); |
1970 | i_size_write(inode, newsize); | |
1971 | inode->i_blocks = 0; | |
1972 | } | |
1973 | ||
1974 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1975 | if (status < 0) { | |
1976 | mlog_errno(status); | |
1977 | goto bail; | |
1978 | } | |
1979 | ||
1980 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
1981 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
1982 | symname); | |
1983 | if (status < 0) { | |
1984 | mlog_errno(status); | |
1985 | goto bail; | |
1986 | } | |
1987 | } | |
1988 | ||
534eaddd TY |
1989 | if (si.enable) { |
1990 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
1991 | xattr_ac, data_ac); | |
1992 | if (status < 0) { | |
1993 | mlog_errno(status); | |
1994 | goto bail; | |
1995 | } | |
1996 | } | |
1997 | ||
a9743fcd MF |
1998 | /* |
1999 | * Do this before adding the entry to the directory. We add | |
2000 | * also set d_op after success so that ->d_iput() will cleanup | |
2001 | * the dentry lock even if ocfs2_add_entry() fails below. | |
2002 | */ | |
2003 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); | |
2004 | if (status) { | |
ccd979bd MF |
2005 | mlog_errno(status); |
2006 | goto bail; | |
2007 | } | |
2008 | ||
595297a8 | 2009 | dl = dentry->d_fsdata; |
2010 | ||
a9743fcd MF |
2011 | status = ocfs2_add_entry(handle, dentry, inode, |
2012 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
2013 | &lookup); | |
2014 | if (status < 0) { | |
379dfe9d MF |
2015 | mlog_errno(status); |
2016 | goto bail; | |
2017 | } | |
2018 | ||
ccd979bd | 2019 | insert_inode_hash(inode); |
ccd979bd MF |
2020 | d_instantiate(dentry, inode); |
2021 | bail: | |
a90714c1 | 2022 | if (status < 0 && did_quota) |
5dd4056d | 2023 | dquot_free_space_nodirty(inode, |
a90714c1 JK |
2024 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
2025 | if (status < 0 && did_quota_inode) | |
63936dda | 2026 | dquot_free_inode(inode); |
28f4821b JQ |
2027 | if (handle) { |
2028 | if (status < 0 && fe) | |
2029 | ocfs2_set_links_count(fe, 0); | |
02dc1af4 | 2030 | ocfs2_commit_trans(osb, handle); |
28f4821b | 2031 | } |
6d8fc40e | 2032 | |
e63aecb6 | 2033 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
2034 | if (did_block_signals) |
2035 | ocfs2_unblock_signals(&oldset); | |
6d8fc40e | 2036 | |
a81cb88b MF |
2037 | brelse(new_fe_bh); |
2038 | brelse(parent_fe_bh); | |
534eaddd | 2039 | kfree(si.value); |
4a12ca3a | 2040 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
2041 | if (inode_ac) |
2042 | ocfs2_free_alloc_context(inode_ac); | |
2043 | if (data_ac) | |
2044 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
2045 | if (xattr_ac) |
2046 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 | 2047 | if ((status < 0) && inode) { |
595297a8 | 2048 | if (dl) |
2049 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
2050 | ||
ab41fdc8 | 2051 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
f5d36202 | 2052 | clear_nlink(inode); |
ccd979bd | 2053 | iput(inode); |
f5d36202 | 2054 | } |
ccd979bd | 2055 | |
c1e8d35e TM |
2056 | if (status) |
2057 | mlog_errno(status); | |
ccd979bd MF |
2058 | |
2059 | return status; | |
2060 | } | |
2061 | ||
ccd979bd MF |
2062 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
2063 | { | |
2064 | int status, namelen; | |
2065 | ||
b0697053 MF |
2066 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
2067 | (long long)blkno); | |
ccd979bd MF |
2068 | if (namelen <= 0) { |
2069 | if (namelen) | |
2070 | status = namelen; | |
2071 | else | |
2072 | status = -EINVAL; | |
2073 | mlog_errno(status); | |
2074 | goto bail; | |
2075 | } | |
2076 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
2077 | status = -EINVAL; | |
2078 | mlog_errno(status); | |
2079 | goto bail; | |
2080 | } | |
2081 | ||
8990e44a | 2082 | trace_ocfs2_blkno_stringify(blkno, name, namelen); |
ccd979bd MF |
2083 | |
2084 | status = 0; | |
2085 | bail: | |
c1e8d35e TM |
2086 | if (status < 0) |
2087 | mlog_errno(status); | |
ccd979bd MF |
2088 | return status; |
2089 | } | |
2090 | ||
dd43bcde MF |
2091 | static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb, |
2092 | struct inode **ret_orphan_dir, | |
2093 | struct buffer_head **ret_orphan_dir_bh) | |
ccd979bd | 2094 | { |
5098c27b | 2095 | struct inode *orphan_dir_inode; |
ccd979bd | 2096 | struct buffer_head *orphan_dir_bh = NULL; |
dd43bcde | 2097 | int ret = 0; |
ccd979bd MF |
2098 | |
2099 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2100 | ORPHAN_DIR_SYSTEM_INODE, | |
2101 | osb->slot_num); | |
2102 | if (!orphan_dir_inode) { | |
dd43bcde MF |
2103 | ret = -ENOENT; |
2104 | mlog_errno(ret); | |
2105 | return ret; | |
ccd979bd MF |
2106 | } |
2107 | ||
5955102c | 2108 | inode_lock(orphan_dir_inode); |
5098c27b | 2109 | |
dd43bcde MF |
2110 | ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2111 | if (ret < 0) { | |
5955102c | 2112 | inode_unlock(orphan_dir_inode); |
dd43bcde MF |
2113 | iput(orphan_dir_inode); |
2114 | ||
2115 | mlog_errno(ret); | |
2116 | return ret; | |
ccd979bd MF |
2117 | } |
2118 | ||
dd43bcde MF |
2119 | *ret_orphan_dir = orphan_dir_inode; |
2120 | *ret_orphan_dir_bh = orphan_dir_bh; | |
5098c27b | 2121 | |
dd43bcde MF |
2122 | return 0; |
2123 | } | |
2124 | ||
2125 | static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode, | |
2126 | struct buffer_head *orphan_dir_bh, | |
2127 | u64 blkno, | |
2128 | char *name, | |
06ee5c75 JQ |
2129 | struct ocfs2_dir_lookup_result *lookup, |
2130 | bool dio) | |
dd43bcde MF |
2131 | { |
2132 | int ret; | |
2133 | struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb); | |
06ee5c75 JQ |
2134 | int namelen = dio ? |
2135 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2136 | OCFS2_ORPHAN_NAMELEN; | |
2137 | ||
2138 | if (dio) { | |
2139 | ret = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2140 | OCFS2_DIO_ORPHAN_PREFIX); | |
2141 | if (ret != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2142 | ret = -EINVAL; | |
2143 | mlog_errno(ret); | |
2144 | return ret; | |
2145 | } | |
dd43bcde | 2146 | |
06ee5c75 JQ |
2147 | ret = ocfs2_blkno_stringify(blkno, |
2148 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2149 | } else | |
2150 | ret = ocfs2_blkno_stringify(blkno, name); | |
dd43bcde MF |
2151 | if (ret < 0) { |
2152 | mlog_errno(ret); | |
2153 | return ret; | |
2154 | } | |
2155 | ||
2156 | ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
2157 | orphan_dir_bh, name, | |
06ee5c75 | 2158 | namelen, lookup); |
dd43bcde MF |
2159 | if (ret < 0) { |
2160 | mlog_errno(ret); | |
2161 | return ret; | |
2162 | } | |
2163 | ||
2164 | return 0; | |
2165 | } | |
2166 | ||
2167 | /** | |
2168 | * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for | |
2169 | * insertion of an orphan. | |
2170 | * @osb: ocfs2 file system | |
2171 | * @ret_orphan_dir: Orphan dir inode - returned locked! | |
2172 | * @blkno: Actual block number of the inode to be inserted into orphan dir. | |
2173 | * @lookup: dir lookup result, to be passed back into functions like | |
2174 | * ocfs2_orphan_add | |
2175 | * | |
2176 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2177 | * fields will be populated. | |
2178 | * | |
2179 | * Returns non-zero on failure. | |
2180 | */ | |
2181 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
2182 | struct inode **ret_orphan_dir, | |
2183 | u64 blkno, | |
2184 | char *name, | |
06ee5c75 JQ |
2185 | struct ocfs2_dir_lookup_result *lookup, |
2186 | bool dio) | |
dd43bcde MF |
2187 | { |
2188 | struct inode *orphan_dir_inode = NULL; | |
2189 | struct buffer_head *orphan_dir_bh = NULL; | |
2190 | int ret = 0; | |
2191 | ||
2192 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode, | |
2193 | &orphan_dir_bh); | |
2194 | if (ret < 0) { | |
2195 | mlog_errno(ret); | |
2196 | return ret; | |
2197 | } | |
2198 | ||
2199 | ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh, | |
06ee5c75 | 2200 | blkno, name, lookup, dio); |
dd43bcde MF |
2201 | if (ret < 0) { |
2202 | mlog_errno(ret); | |
2203 | goto out; | |
ccd979bd MF |
2204 | } |
2205 | ||
5098c27b MF |
2206 | *ret_orphan_dir = orphan_dir_inode; |
2207 | ||
dd43bcde MF |
2208 | out: |
2209 | brelse(orphan_dir_bh); | |
2210 | ||
2211 | if (ret) { | |
2212 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2213 | inode_unlock(orphan_dir_inode); |
ccd979bd | 2214 | iput(orphan_dir_inode); |
5098c27b | 2215 | } |
ccd979bd | 2216 | |
c1e8d35e TM |
2217 | if (ret) |
2218 | mlog_errno(ret); | |
dd43bcde | 2219 | return ret; |
ccd979bd MF |
2220 | } |
2221 | ||
2222 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 2223 | handle_t *handle, |
ccd979bd | 2224 | struct inode *inode, |
3939fda4 | 2225 | struct buffer_head *fe_bh, |
ccd979bd | 2226 | char *name, |
4a12ca3a | 2227 | struct ocfs2_dir_lookup_result *lookup, |
06ee5c75 JQ |
2228 | struct inode *orphan_dir_inode, |
2229 | bool dio) | |
ccd979bd | 2230 | { |
ccd979bd MF |
2231 | struct buffer_head *orphan_dir_bh = NULL; |
2232 | int status = 0; | |
2233 | struct ocfs2_dinode *orphan_fe; | |
3939fda4 | 2234 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; |
06ee5c75 JQ |
2235 | int namelen = dio ? |
2236 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2237 | OCFS2_ORPHAN_NAMELEN; | |
ccd979bd | 2238 | |
8990e44a TM |
2239 | trace_ocfs2_orphan_add_begin( |
2240 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 2241 | |
b657c95c | 2242 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
2243 | if (status < 0) { |
2244 | mlog_errno(status); | |
2245 | goto leave; | |
2246 | } | |
2247 | ||
0cf2f763 JB |
2248 | status = ocfs2_journal_access_di(handle, |
2249 | INODE_CACHE(orphan_dir_inode), | |
2250 | orphan_dir_bh, | |
13723d00 | 2251 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2252 | if (status < 0) { |
2253 | mlog_errno(status); | |
2254 | goto leave; | |
2255 | } | |
2256 | ||
ea45466a YL |
2257 | /* |
2258 | * We're going to journal the change of i_flags and i_orphaned_slot. | |
2259 | * It's safe anyway, though some callers may duplicate the journaling. | |
2260 | * Journaling within the func just make the logic look more | |
2261 | * straightforward. | |
2262 | */ | |
2263 | status = ocfs2_journal_access_di(handle, | |
2264 | INODE_CACHE(inode), | |
2265 | fe_bh, | |
2266 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2267 | if (status < 0) { | |
2268 | mlog_errno(status); | |
2269 | goto leave; | |
2270 | } | |
2271 | ||
ccd979bd MF |
2272 | /* we're a cluster, and nlink can change on disk from |
2273 | * underneath us... */ | |
2274 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2275 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2276 | ocfs2_add_links_count(orphan_fe, 1); |
bfe86848 | 2277 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2278 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2279 | |
2280 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
06ee5c75 | 2281 | namelen, inode, |
ccd979bd | 2282 | OCFS2_I(inode)->ip_blkno, |
4a12ca3a | 2283 | orphan_dir_bh, lookup); |
ccd979bd MF |
2284 | if (status < 0) { |
2285 | mlog_errno(status); | |
ea45466a | 2286 | goto rollback; |
3939fda4 TY |
2287 | } |
2288 | ||
06ee5c75 JQ |
2289 | if (dio) { |
2290 | /* Update flag OCFS2_DIO_ORPHANED_FL and record the orphan | |
2291 | * slot. | |
2292 | */ | |
2293 | fe->i_flags |= cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2294 | fe->i_dio_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2295 | } else { | |
2296 | fe->i_flags |= cpu_to_le32(OCFS2_ORPHANED_FL); | |
2297 | OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR; | |
ccd979bd | 2298 | |
06ee5c75 JQ |
2299 | /* Record which orphan dir our inode now resides |
2300 | * in. delete_inode will use this to determine which orphan | |
2301 | * dir to lock. */ | |
2302 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2303 | } | |
ccd979bd | 2304 | |
3939fda4 TY |
2305 | ocfs2_journal_dirty(handle, fe_bh); |
2306 | ||
8990e44a TM |
2307 | trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno, |
2308 | osb->slot_num); | |
ccd979bd | 2309 | |
ea45466a YL |
2310 | rollback: |
2311 | if (status < 0) { | |
2312 | if (S_ISDIR(inode->i_mode)) | |
2313 | ocfs2_add_links_count(orphan_fe, -1); | |
2314 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); | |
2315 | } | |
2316 | ||
ccd979bd | 2317 | leave: |
a81cb88b | 2318 | brelse(orphan_dir_bh); |
ccd979bd | 2319 | |
ccd979bd MF |
2320 | return status; |
2321 | } | |
2322 | ||
2323 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
2324 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 2325 | handle_t *handle, |
ccd979bd MF |
2326 | struct inode *orphan_dir_inode, |
2327 | struct inode *inode, | |
06ee5c75 JQ |
2328 | struct buffer_head *orphan_dir_bh, |
2329 | bool dio) | |
ccd979bd | 2330 | { |
64202a21 | 2331 | char name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1]; |
ccd979bd MF |
2332 | struct ocfs2_dinode *orphan_fe; |
2333 | int status = 0; | |
4a12ca3a | 2334 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd | 2335 | |
06ee5c75 JQ |
2336 | if (dio) { |
2337 | status = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2338 | OCFS2_DIO_ORPHAN_PREFIX); | |
2339 | if (status != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2340 | status = -EINVAL; | |
2341 | mlog_errno(status); | |
2342 | return status; | |
2343 | } | |
2344 | ||
2345 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, | |
2346 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2347 | } else | |
2348 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
ccd979bd MF |
2349 | if (status < 0) { |
2350 | mlog_errno(status); | |
2351 | goto leave; | |
2352 | } | |
2353 | ||
8990e44a TM |
2354 | trace_ocfs2_orphan_del( |
2355 | (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
e38a5739 | 2356 | name, strlen(name)); |
ccd979bd | 2357 | |
074a6c65 JQ |
2358 | status = ocfs2_journal_access_di(handle, |
2359 | INODE_CACHE(orphan_dir_inode), | |
2360 | orphan_dir_bh, | |
2361 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2362 | if (status < 0) { | |
2363 | mlog_errno(status); | |
2364 | goto leave; | |
2365 | } | |
2366 | ||
ccd979bd | 2367 | /* find it's spot in the orphan directory */ |
e38a5739 | 2368 | status = ocfs2_find_entry(name, strlen(name), orphan_dir_inode, |
4a12ca3a MF |
2369 | &lookup); |
2370 | if (status) { | |
ccd979bd MF |
2371 | mlog_errno(status); |
2372 | goto leave; | |
2373 | } | |
2374 | ||
2375 | /* remove it from the orphan directory */ | |
4a12ca3a | 2376 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
2377 | if (status < 0) { |
2378 | mlog_errno(status); | |
2379 | goto leave; | |
2380 | } | |
2381 | ||
ccd979bd MF |
2382 | /* do the i_nlink dance! :) */ |
2383 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2384 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2385 | ocfs2_add_links_count(orphan_fe, -1); |
bfe86848 | 2386 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2387 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2388 | |
2389 | leave: | |
4a12ca3a | 2390 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd | 2391 | |
c1e8d35e TM |
2392 | if (status) |
2393 | mlog_errno(status); | |
ccd979bd MF |
2394 | return status; |
2395 | } | |
2396 | ||
97b8f4a9 | 2397 | /** |
25985edc | 2398 | * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to receive a newly |
97b8f4a9 MF |
2399 | * allocated file. This is different from the typical 'add to orphan dir' |
2400 | * operation in that the inode does not yet exist. This is a problem because | |
2401 | * the orphan dir stringifies the inode block number to come up with it's | |
2402 | * dirent. Obviously if the inode does not yet exist we have a chicken and egg | |
2403 | * problem. This function works around it by calling deeper into the orphan | |
2404 | * and suballoc code than other callers. Use this only by necessity. | |
2405 | * @dir: The directory which this inode will ultimately wind up under - not the | |
2406 | * orphan dir! | |
2407 | * @dir_bh: buffer_head the @dir inode block | |
2408 | * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled | |
2409 | * with the string to be used for orphan dirent. Pass back to the orphan dir | |
2410 | * code. | |
2411 | * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan | |
2412 | * dir code. | |
2413 | * @ret_di_blkno: block number where the new inode will be allocated. | |
2414 | * @orphan_insert: Dir insert context to be passed back into orphan dir code. | |
2415 | * @ret_inode_ac: Inode alloc context to be passed back to the allocator. | |
2416 | * | |
2417 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2418 | * fields will be populated. | |
2419 | * | |
2420 | * Returns non-zero on failure. | |
2421 | */ | |
2422 | static int ocfs2_prep_new_orphaned_file(struct inode *dir, | |
2423 | struct buffer_head *dir_bh, | |
2424 | char *orphan_name, | |
2425 | struct inode **ret_orphan_dir, | |
2426 | u64 *ret_di_blkno, | |
2427 | struct ocfs2_dir_lookup_result *orphan_insert, | |
2428 | struct ocfs2_alloc_context **ret_inode_ac) | |
2429 | { | |
2430 | int ret; | |
2431 | u64 di_blkno; | |
2432 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2433 | struct inode *orphan_dir = NULL; | |
2434 | struct buffer_head *orphan_dir_bh = NULL; | |
2435 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2436 | ||
2437 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh); | |
2438 | if (ret < 0) { | |
2439 | mlog_errno(ret); | |
2440 | return ret; | |
2441 | } | |
2442 | ||
2443 | /* reserve an inode spot */ | |
2444 | ret = ocfs2_reserve_new_inode(osb, &inode_ac); | |
2445 | if (ret < 0) { | |
2446 | if (ret != -ENOSPC) | |
2447 | mlog_errno(ret); | |
2448 | goto out; | |
2449 | } | |
2450 | ||
2451 | ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac, | |
2452 | &di_blkno); | |
2453 | if (ret) { | |
2454 | mlog_errno(ret); | |
2455 | goto out; | |
2456 | } | |
2457 | ||
2458 | ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh, | |
06ee5c75 JQ |
2459 | di_blkno, orphan_name, orphan_insert, |
2460 | false); | |
97b8f4a9 MF |
2461 | if (ret < 0) { |
2462 | mlog_errno(ret); | |
2463 | goto out; | |
2464 | } | |
2465 | ||
2466 | out: | |
2467 | if (ret == 0) { | |
2468 | *ret_orphan_dir = orphan_dir; | |
2469 | *ret_di_blkno = di_blkno; | |
2470 | *ret_inode_ac = inode_ac; | |
2471 | /* | |
2472 | * orphan_name and orphan_insert are already up to | |
2473 | * date via prepare_orphan_dir | |
2474 | */ | |
2475 | } else { | |
2476 | /* Unroll reserve_new_inode* */ | |
2477 | if (inode_ac) | |
2478 | ocfs2_free_alloc_context(inode_ac); | |
2479 | ||
2480 | /* Unroll orphan dir locking */ | |
5955102c | 2481 | inode_unlock(orphan_dir); |
97b8f4a9 MF |
2482 | ocfs2_inode_unlock(orphan_dir, 1); |
2483 | iput(orphan_dir); | |
2484 | } | |
2485 | ||
2486 | brelse(orphan_dir_bh); | |
2487 | ||
7869e590 | 2488 | return ret; |
97b8f4a9 MF |
2489 | } |
2490 | ||
bc13d347 TM |
2491 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
2492 | int mode, | |
2493 | struct inode **new_inode) | |
2494 | { | |
2495 | int status, did_quota_inode = 0; | |
2496 | struct inode *inode = NULL; | |
2497 | struct inode *orphan_dir = NULL; | |
2498 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
bc13d347 TM |
2499 | handle_t *handle = NULL; |
2500 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2501 | struct buffer_head *parent_di_bh = NULL; | |
2502 | struct buffer_head *new_di_bh = NULL; | |
2503 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2504 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
3f649ab7 | 2505 | u64 di_blkno, suballoc_loc; |
97b8f4a9 | 2506 | u16 suballoc_bit; |
bc13d347 TM |
2507 | |
2508 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2509 | if (status < 0) { | |
2510 | if (status != -ENOENT) | |
2511 | mlog_errno(status); | |
2512 | return status; | |
2513 | } | |
2514 | ||
97b8f4a9 MF |
2515 | status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh, |
2516 | orphan_name, &orphan_dir, | |
2517 | &di_blkno, &orphan_insert, &inode_ac); | |
bc13d347 TM |
2518 | if (status < 0) { |
2519 | if (status != -ENOSPC) | |
2520 | mlog_errno(status); | |
2521 | goto leave; | |
2522 | } | |
2523 | ||
2524 | inode = ocfs2_get_init_inode(dir, mode); | |
9c89fe0a JK |
2525 | if (IS_ERR(inode)) { |
2526 | status = PTR_ERR(inode); | |
2527 | inode = NULL; | |
bc13d347 TM |
2528 | mlog_errno(status); |
2529 | goto leave; | |
2530 | } | |
2531 | ||
2532 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); | |
2533 | if (IS_ERR(handle)) { | |
2534 | status = PTR_ERR(handle); | |
2535 | handle = NULL; | |
2536 | mlog_errno(status); | |
2537 | goto leave; | |
2538 | } | |
2539 | ||
63936dda CH |
2540 | status = dquot_alloc_inode(inode); |
2541 | if (status) | |
bc13d347 | 2542 | goto leave; |
bc13d347 TM |
2543 | did_quota_inode = 1; |
2544 | ||
97b8f4a9 MF |
2545 | status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac, |
2546 | &suballoc_loc, | |
2547 | &suballoc_bit, di_blkno); | |
bc13d347 TM |
2548 | if (status < 0) { |
2549 | mlog_errno(status); | |
2550 | goto leave; | |
2551 | } | |
2552 | ||
6d6b77f1 | 2553 | clear_nlink(inode); |
97b8f4a9 MF |
2554 | /* do the real work now. */ |
2555 | status = __ocfs2_mknod_locked(dir, inode, | |
2556 | 0, &new_di_bh, parent_di_bh, handle, | |
2557 | inode_ac, di_blkno, suballoc_loc, | |
2558 | suballoc_bit); | |
bc13d347 TM |
2559 | if (status < 0) { |
2560 | mlog_errno(status); | |
2561 | goto leave; | |
2562 | } | |
2563 | ||
3939fda4 | 2564 | status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name, |
06ee5c75 | 2565 | &orphan_insert, orphan_dir, false); |
bc13d347 TM |
2566 | if (status < 0) { |
2567 | mlog_errno(status); | |
2568 | goto leave; | |
2569 | } | |
2570 | ||
2571 | /* get open lock so that only nodes can't remove it from orphan dir. */ | |
2572 | status = ocfs2_open_lock(inode); | |
2573 | if (status < 0) | |
2574 | mlog_errno(status); | |
2575 | ||
c7d260af | 2576 | insert_inode_hash(inode); |
bc13d347 TM |
2577 | leave: |
2578 | if (status < 0 && did_quota_inode) | |
63936dda | 2579 | dquot_free_inode(inode); |
bc13d347 TM |
2580 | if (handle) |
2581 | ocfs2_commit_trans(osb, handle); | |
2582 | ||
2583 | if (orphan_dir) { | |
2584 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
2585 | ocfs2_inode_unlock(orphan_dir, 1); | |
5955102c | 2586 | inode_unlock(orphan_dir); |
bc13d347 TM |
2587 | iput(orphan_dir); |
2588 | } | |
2589 | ||
bc13d347 TM |
2590 | if ((status < 0) && inode) { |
2591 | clear_nlink(inode); | |
2592 | iput(inode); | |
2593 | } | |
2594 | ||
2595 | if (inode_ac) | |
2596 | ocfs2_free_alloc_context(inode_ac); | |
2597 | ||
2598 | brelse(new_di_bh); | |
2599 | ||
2600 | if (!status) | |
2601 | *new_inode = inode; | |
2602 | ||
2603 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2604 | ||
2605 | ocfs2_inode_unlock(dir, 1); | |
2606 | brelse(parent_di_bh); | |
2607 | return status; | |
2608 | } | |
2609 | ||
06ee5c75 JQ |
2610 | int ocfs2_add_inode_to_orphan(struct ocfs2_super *osb, |
2611 | struct inode *inode) | |
2612 | { | |
2613 | char orphan_name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1]; | |
2614 | struct inode *orphan_dir_inode = NULL; | |
2615 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
2616 | struct buffer_head *di_bh = NULL; | |
2617 | int status = 0; | |
2618 | handle_t *handle = NULL; | |
4813962b | 2619 | struct ocfs2_dinode *di = NULL; |
06ee5c75 JQ |
2620 | |
2621 | status = ocfs2_inode_lock(inode, &di_bh, 1); | |
2622 | if (status < 0) { | |
2623 | mlog_errno(status); | |
2624 | goto bail; | |
2625 | } | |
2626 | ||
4813962b JQ |
2627 | di = (struct ocfs2_dinode *) di_bh->b_data; |
2628 | /* | |
2629 | * Another append dio crashed? | |
512f62ac | 2630 | * If so, manually recover it first. |
4813962b JQ |
2631 | */ |
2632 | if (unlikely(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))) { | |
512f62ac JQ |
2633 | status = ocfs2_truncate_file(inode, di_bh, i_size_read(inode)); |
2634 | if (status < 0) { | |
2635 | if (status != -ENOSPC) | |
2636 | mlog_errno(status); | |
2637 | goto bail_unlock_inode; | |
2638 | } | |
2639 | ||
2640 | status = ocfs2_del_inode_from_orphan(osb, inode, di_bh, 0, 0); | |
2641 | if (status < 0) { | |
2642 | mlog_errno(status); | |
2643 | goto bail_unlock_inode; | |
2644 | } | |
4813962b JQ |
2645 | } |
2646 | ||
06ee5c75 JQ |
2647 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir_inode, |
2648 | OCFS2_I(inode)->ip_blkno, | |
2649 | orphan_name, | |
2650 | &orphan_insert, | |
2651 | true); | |
2652 | if (status < 0) { | |
2653 | mlog_errno(status); | |
2654 | goto bail_unlock_inode; | |
2655 | } | |
2656 | ||
2657 | handle = ocfs2_start_trans(osb, | |
2658 | OCFS2_INODE_ADD_TO_ORPHAN_CREDITS); | |
2659 | if (IS_ERR(handle)) { | |
2660 | status = PTR_ERR(handle); | |
2661 | goto bail_unlock_orphan; | |
2662 | } | |
2663 | ||
2664 | status = ocfs2_orphan_add(osb, handle, inode, di_bh, orphan_name, | |
2665 | &orphan_insert, orphan_dir_inode, true); | |
2666 | if (status) | |
2667 | mlog_errno(status); | |
2668 | ||
2669 | ocfs2_commit_trans(osb, handle); | |
2670 | ||
2671 | bail_unlock_orphan: | |
2672 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2673 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2674 | iput(orphan_dir_inode); |
2675 | ||
2676 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2677 | ||
2678 | bail_unlock_inode: | |
2679 | ocfs2_inode_unlock(inode, 1); | |
2680 | brelse(di_bh); | |
2681 | ||
2682 | bail: | |
2683 | return status; | |
2684 | } | |
2685 | ||
2686 | int ocfs2_del_inode_from_orphan(struct ocfs2_super *osb, | |
cf1776a9 JQ |
2687 | struct inode *inode, struct buffer_head *di_bh, |
2688 | int update_isize, loff_t end) | |
06ee5c75 JQ |
2689 | { |
2690 | struct inode *orphan_dir_inode = NULL; | |
2691 | struct buffer_head *orphan_dir_bh = NULL; | |
cf1776a9 | 2692 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data; |
06ee5c75 JQ |
2693 | handle_t *handle = NULL; |
2694 | int status = 0; | |
2695 | ||
06ee5c75 JQ |
2696 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
2697 | ORPHAN_DIR_SYSTEM_INODE, | |
2698 | le16_to_cpu(di->i_dio_orphaned_slot)); | |
2699 | if (!orphan_dir_inode) { | |
2700 | status = -ENOENT; | |
2701 | mlog_errno(status); | |
cf1776a9 | 2702 | goto bail; |
06ee5c75 JQ |
2703 | } |
2704 | ||
5955102c | 2705 | inode_lock(orphan_dir_inode); |
06ee5c75 JQ |
2706 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2707 | if (status < 0) { | |
5955102c | 2708 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2709 | iput(orphan_dir_inode); |
2710 | mlog_errno(status); | |
cf1776a9 | 2711 | goto bail; |
06ee5c75 JQ |
2712 | } |
2713 | ||
2714 | handle = ocfs2_start_trans(osb, | |
2715 | OCFS2_INODE_DEL_FROM_ORPHAN_CREDITS); | |
2716 | if (IS_ERR(handle)) { | |
2717 | status = PTR_ERR(handle); | |
2718 | goto bail_unlock_orphan; | |
2719 | } | |
2720 | ||
2721 | BUG_ON(!(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))); | |
2722 | ||
2723 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, | |
2724 | inode, orphan_dir_bh, true); | |
2725 | if (status < 0) { | |
2726 | mlog_errno(status); | |
2727 | goto bail_commit; | |
2728 | } | |
2729 | ||
2730 | status = ocfs2_journal_access_di(handle, | |
2731 | INODE_CACHE(inode), | |
2732 | di_bh, | |
2733 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2734 | if (status < 0) { | |
2735 | mlog_errno(status); | |
2736 | goto bail_commit; | |
2737 | } | |
2738 | ||
2739 | di->i_flags &= ~cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2740 | di->i_dio_orphaned_slot = 0; | |
2741 | ||
2742 | if (update_isize) { | |
2743 | status = ocfs2_set_inode_size(handle, inode, di_bh, end); | |
2744 | if (status) | |
2745 | mlog_errno(status); | |
2746 | } else | |
2747 | ocfs2_journal_dirty(handle, di_bh); | |
2748 | ||
2749 | bail_commit: | |
2750 | ocfs2_commit_trans(osb, handle); | |
2751 | ||
2752 | bail_unlock_orphan: | |
2753 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2754 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2755 | brelse(orphan_dir_bh); |
2756 | iput(orphan_dir_inode); | |
2757 | ||
06ee5c75 JQ |
2758 | bail: |
2759 | return status; | |
2760 | } | |
2761 | ||
bc13d347 TM |
2762 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, |
2763 | struct inode *inode, | |
2764 | struct dentry *dentry) | |
2765 | { | |
2766 | int status = 0; | |
2767 | struct buffer_head *parent_di_bh = NULL; | |
2768 | handle_t *handle = NULL; | |
2769 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2770 | struct ocfs2_dinode *dir_di, *di; | |
2771 | struct inode *orphan_dir_inode = NULL; | |
2772 | struct buffer_head *orphan_dir_bh = NULL; | |
2773 | struct buffer_head *di_bh = NULL; | |
2774 | struct ocfs2_dir_lookup_result lookup = { NULL, }; | |
2775 | ||
8990e44a TM |
2776 | trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry, |
2777 | dentry->d_name.len, dentry->d_name.name, | |
2778 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
2779 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
bc13d347 TM |
2780 | |
2781 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2782 | if (status < 0) { | |
2783 | if (status != -ENOENT) | |
2784 | mlog_errno(status); | |
2785 | return status; | |
2786 | } | |
2787 | ||
2788 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; | |
2789 | if (!dir_di->i_links_count) { | |
2790 | /* can't make a file in a deleted directory. */ | |
2791 | status = -ENOENT; | |
2792 | goto leave; | |
2793 | } | |
2794 | ||
2795 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
2796 | dentry->d_name.len); | |
2797 | if (status) | |
2798 | goto leave; | |
2799 | ||
2800 | /* get a spot inside the dir. */ | |
2801 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, | |
2802 | dentry->d_name.name, | |
2803 | dentry->d_name.len, &lookup); | |
2804 | if (status < 0) { | |
2805 | mlog_errno(status); | |
2806 | goto leave; | |
2807 | } | |
2808 | ||
2809 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2810 | ORPHAN_DIR_SYSTEM_INODE, | |
2811 | osb->slot_num); | |
2812 | if (!orphan_dir_inode) { | |
62f8b1f0 | 2813 | status = -ENOENT; |
bc13d347 TM |
2814 | mlog_errno(status); |
2815 | goto leave; | |
2816 | } | |
2817 | ||
5955102c | 2818 | inode_lock(orphan_dir_inode); |
bc13d347 TM |
2819 | |
2820 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2821 | if (status < 0) { | |
2822 | mlog_errno(status); | |
5955102c | 2823 | inode_unlock(orphan_dir_inode); |
bc13d347 TM |
2824 | iput(orphan_dir_inode); |
2825 | goto leave; | |
2826 | } | |
2827 | ||
2828 | status = ocfs2_read_inode_block(inode, &di_bh); | |
2829 | if (status < 0) { | |
2830 | mlog_errno(status); | |
2831 | goto orphan_unlock; | |
2832 | } | |
2833 | ||
2834 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); | |
2835 | if (IS_ERR(handle)) { | |
2836 | status = PTR_ERR(handle); | |
2837 | handle = NULL; | |
2838 | mlog_errno(status); | |
2839 | goto orphan_unlock; | |
2840 | } | |
2841 | ||
2842 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), | |
2843 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2844 | if (status < 0) { | |
2845 | mlog_errno(status); | |
2846 | goto out_commit; | |
2847 | } | |
2848 | ||
2849 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
06ee5c75 | 2850 | orphan_dir_bh, false); |
bc13d347 TM |
2851 | if (status < 0) { |
2852 | mlog_errno(status); | |
2853 | goto out_commit; | |
2854 | } | |
2855 | ||
2856 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
13eb9887 | 2857 | di->i_flags &= ~cpu_to_le32(OCFS2_ORPHANED_FL); |
bc13d347 | 2858 | di->i_orphaned_slot = 0; |
bfe86848 | 2859 | set_nlink(inode, 1); |
10cf1a02 | 2860 | ocfs2_set_links_count(di, inode->i_nlink); |
6fdb702d | 2861 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
bc13d347 TM |
2862 | ocfs2_journal_dirty(handle, di_bh); |
2863 | ||
2864 | status = ocfs2_add_entry(handle, dentry, inode, | |
2865 | OCFS2_I(inode)->ip_blkno, parent_di_bh, | |
2866 | &lookup); | |
2867 | if (status < 0) { | |
2868 | mlog_errno(status); | |
2869 | goto out_commit; | |
2870 | } | |
2871 | ||
2872 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
2873 | OCFS2_I(dir)->ip_blkno); | |
2874 | if (status) { | |
2875 | mlog_errno(status); | |
2876 | goto out_commit; | |
2877 | } | |
2878 | ||
bc13d347 TM |
2879 | d_instantiate(dentry, inode); |
2880 | status = 0; | |
2881 | out_commit: | |
2882 | ocfs2_commit_trans(osb, handle); | |
2883 | orphan_unlock: | |
2884 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2885 | inode_unlock(orphan_dir_inode); |
bc13d347 TM |
2886 | iput(orphan_dir_inode); |
2887 | leave: | |
2888 | ||
2889 | ocfs2_inode_unlock(dir, 1); | |
2890 | ||
2891 | brelse(di_bh); | |
2892 | brelse(parent_di_bh); | |
2893 | brelse(orphan_dir_bh); | |
2894 | ||
2895 | ocfs2_free_dir_lookup_result(&lookup); | |
2896 | ||
c1e8d35e TM |
2897 | if (status) |
2898 | mlog_errno(status); | |
bc13d347 TM |
2899 | |
2900 | return status; | |
2901 | } | |
2902 | ||
92e1d5be | 2903 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2904 | .create = ocfs2_create, |
2905 | .lookup = ocfs2_lookup, | |
2906 | .link = ocfs2_link, | |
2907 | .unlink = ocfs2_unlink, | |
2908 | .rmdir = ocfs2_unlink, | |
2909 | .symlink = ocfs2_symlink, | |
2910 | .mkdir = ocfs2_mkdir, | |
2911 | .mknod = ocfs2_mknod, | |
2912 | .rename = ocfs2_rename, | |
2913 | .setattr = ocfs2_setattr, | |
2914 | .getattr = ocfs2_getattr, | |
d38eb8db | 2915 | .permission = ocfs2_permission, |
cf1d6c76 | 2916 | .listxattr = ocfs2_listxattr, |
55f4946e | 2917 | .fiemap = ocfs2_fiemap, |
cac2f8b8 | 2918 | .get_inode_acl = ocfs2_iop_get_acl, |
702e5bc6 | 2919 | .set_acl = ocfs2_iop_set_acl, |
2b5f52c5 MS |
2920 | .fileattr_get = ocfs2_fileattr_get, |
2921 | .fileattr_set = ocfs2_fileattr_set, | |
ccd979bd | 2922 | }; |