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328970de | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
ccd979bd MF |
2 | /* -*- mode: c; c-basic-offset: 8; -*- |
3 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
4 | * | |
5 | * namei.c | |
6 | * | |
7 | * Create and rename file, directory, symlinks | |
8 | * | |
9 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
10 | * | |
11 | * Portions of this code from linux/fs/ext3/dir.c | |
12 | * | |
13 | * Copyright (C) 1992, 1993, 1994, 1995 | |
14 | * Remy Card (card@masi.ibp.fr) | |
15 | * Laboratoire MASI - Institut Blaise pascal | |
16 | * Universite Pierre et Marie Curie (Paris VI) | |
17 | * | |
18 | * from | |
19 | * | |
20 | * linux/fs/minix/dir.c | |
21 | * | |
22 | * Copyright (C) 1991, 1992 Linux Torvalds | |
ccd979bd MF |
23 | */ |
24 | ||
25 | #include <linux/fs.h> | |
26 | #include <linux/types.h> | |
27 | #include <linux/slab.h> | |
28 | #include <linux/highmem.h> | |
a90714c1 | 29 | #include <linux/quotaops.h> |
cc56c33e | 30 | #include <linux/iversion.h> |
ccd979bd | 31 | |
ccd979bd MF |
32 | #include <cluster/masklog.h> |
33 | ||
34 | #include "ocfs2.h" | |
35 | ||
36 | #include "alloc.h" | |
37 | #include "dcache.h" | |
38 | #include "dir.h" | |
39 | #include "dlmglue.h" | |
40 | #include "extent_map.h" | |
41 | #include "file.h" | |
42 | #include "inode.h" | |
43 | #include "journal.h" | |
44 | #include "namei.h" | |
45 | #include "suballoc.h" | |
aa958874 | 46 | #include "super.h" |
ccd979bd MF |
47 | #include "symlink.h" |
48 | #include "sysfile.h" | |
49 | #include "uptodate.h" | |
cf1d6c76 | 50 | #include "xattr.h" |
89c38bd0 | 51 | #include "acl.h" |
8990e44a | 52 | #include "ocfs2_trace.h" |
2b5f52c5 | 53 | #include "ioctl.h" |
ccd979bd MF |
54 | |
55 | #include "buffer_head_io.h" | |
56 | ||
ccd979bd MF |
57 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
58 | struct inode *dir, | |
f5d36202 | 59 | struct inode *inode, |
ccd979bd MF |
60 | dev_t dev, |
61 | struct buffer_head **new_fe_bh, | |
62 | struct buffer_head *parent_fe_bh, | |
1fabe148 | 63 | handle_t *handle, |
ccd979bd MF |
64 | struct ocfs2_alloc_context *inode_ac); |
65 | ||
ccd979bd | 66 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, |
5098c27b | 67 | struct inode **ret_orphan_dir, |
19bd341f | 68 | u64 blkno, |
ccd979bd | 69 | char *name, |
06ee5c75 JQ |
70 | struct ocfs2_dir_lookup_result *lookup, |
71 | bool dio); | |
ccd979bd MF |
72 | |
73 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 74 | handle_t *handle, |
ccd979bd | 75 | struct inode *inode, |
3939fda4 | 76 | struct buffer_head *fe_bh, |
ccd979bd | 77 | char *name, |
4a12ca3a | 78 | struct ocfs2_dir_lookup_result *lookup, |
06ee5c75 JQ |
79 | struct inode *orphan_dir_inode, |
80 | bool dio); | |
ccd979bd MF |
81 | |
82 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 83 | handle_t *handle, |
ccd979bd MF |
84 | struct inode *inode, |
85 | const char *symname); | |
86 | ||
53dc20b9 X |
87 | static int ocfs2_double_lock(struct ocfs2_super *osb, |
88 | struct buffer_head **bh1, | |
89 | struct inode *inode1, | |
90 | struct buffer_head **bh2, | |
91 | struct inode *inode2, | |
92 | int rename); | |
93 | ||
94 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2); | |
ccd979bd MF |
95 | /* An orphan dir name is an 8 byte value, printed as a hex string */ |
96 | #define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64))) | |
97 | ||
98 | static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry, | |
00cd8dd3 | 99 | unsigned int flags) |
ccd979bd MF |
100 | { |
101 | int status; | |
102 | u64 blkno; | |
ccd979bd MF |
103 | struct inode *inode = NULL; |
104 | struct dentry *ret; | |
ccd979bd MF |
105 | struct ocfs2_inode_info *oi; |
106 | ||
8990e44a TM |
107 | trace_ocfs2_lookup(dir, dentry, dentry->d_name.len, |
108 | dentry->d_name.name, | |
109 | (unsigned long long)OCFS2_I(dir)->ip_blkno, 0); | |
ccd979bd MF |
110 | |
111 | if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) { | |
112 | ret = ERR_PTR(-ENAMETOOLONG); | |
113 | goto bail; | |
114 | } | |
115 | ||
cb25797d | 116 | status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT); |
ccd979bd MF |
117 | if (status < 0) { |
118 | if (status != -ENOENT) | |
119 | mlog_errno(status); | |
120 | ret = ERR_PTR(status); | |
121 | goto bail; | |
122 | } | |
123 | ||
be94d117 MF |
124 | status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name, |
125 | dentry->d_name.len, &blkno); | |
ccd979bd MF |
126 | if (status < 0) |
127 | goto bail_add; | |
128 | ||
5fa0613e | 129 | inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0); |
ccd979bd | 130 | if (IS_ERR(inode)) { |
ccd979bd MF |
131 | ret = ERR_PTR(-EACCES); |
132 | goto bail_unlock; | |
133 | } | |
134 | ||
135 | oi = OCFS2_I(inode); | |
136 | /* Clear any orphaned state... If we were able to look up the | |
137 | * inode from a directory, it certainly can't be orphaned. We | |
138 | * might have the bad state from a node which intended to | |
139 | * orphan this inode but crashed before it could commit the | |
140 | * unlink. */ | |
141 | spin_lock(&oi->ip_lock); | |
142 | oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED; | |
ccd979bd MF |
143 | spin_unlock(&oi->ip_lock); |
144 | ||
145 | bail_add: | |
ccd979bd MF |
146 | ret = d_splice_alias(inode, dentry); |
147 | ||
379dfe9d MF |
148 | if (inode) { |
149 | /* | |
150 | * If d_splice_alias() finds a DCACHE_DISCONNECTED | |
151 | * dentry, it will d_move() it on top of ourse. The | |
152 | * return value will indicate this however, so in | |
153 | * those cases, we switch them around for the locking | |
154 | * code. | |
155 | * | |
156 | * NOTE: This dentry already has ->d_op set from | |
157 | * ocfs2_get_parent() and ocfs2_get_dentry() | |
158 | */ | |
d3556bab | 159 | if (!IS_ERR_OR_NULL(ret)) |
379dfe9d MF |
160 | dentry = ret; |
161 | ||
162 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
0027dd5b | 163 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
164 | if (status) { |
165 | mlog_errno(status); | |
166 | ret = ERR_PTR(status); | |
167 | goto bail_unlock; | |
168 | } | |
5e98d492 GR |
169 | } else |
170 | ocfs2_dentry_attach_gen(dentry); | |
379dfe9d | 171 | |
ccd979bd MF |
172 | bail_unlock: |
173 | /* Don't drop the cluster lock until *after* the d_add -- | |
174 | * unlink on another node will message us to remove that | |
175 | * dentry under this lock so otherwise we can race this with | |
34d024f8 | 176 | * the downconvert thread and have a stale dentry. */ |
e63aecb6 | 177 | ocfs2_inode_unlock(dir, 0); |
ccd979bd MF |
178 | |
179 | bail: | |
ccd979bd | 180 | |
8990e44a | 181 | trace_ocfs2_lookup_ret(ret); |
ccd979bd MF |
182 | |
183 | return ret; | |
184 | } | |
185 | ||
67697cbd | 186 | static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode) |
f5d36202 TY |
187 | { |
188 | struct inode *inode; | |
9c89fe0a | 189 | int status; |
f5d36202 TY |
190 | |
191 | inode = new_inode(dir->i_sb); | |
192 | if (!inode) { | |
193 | mlog(ML_ERROR, "new_inode failed!\n"); | |
9c89fe0a | 194 | return ERR_PTR(-ENOMEM); |
f5d36202 TY |
195 | } |
196 | ||
197 | /* populate as many fields early on as possible - many of | |
198 | * these are used by the support functions here and in | |
199 | * callers. */ | |
200 | if (S_ISDIR(mode)) | |
bfe86848 | 201 | set_nlink(inode, 2); |
21cb47be | 202 | inode_init_owner(&init_user_ns, inode, dir, mode); |
9c89fe0a JK |
203 | status = dquot_initialize(inode); |
204 | if (status) | |
205 | return ERR_PTR(status); | |
206 | ||
f5d36202 TY |
207 | return inode; |
208 | } | |
209 | ||
595297a8 | 210 | static void ocfs2_cleanup_add_entry_failure(struct ocfs2_super *osb, |
211 | struct dentry *dentry, struct inode *inode) | |
212 | { | |
213 | struct ocfs2_dentry_lock *dl = dentry->d_fsdata; | |
214 | ||
215 | ocfs2_simple_drop_lockres(osb, &dl->dl_lockres); | |
216 | ocfs2_lock_res_free(&dl->dl_lockres); | |
217 | BUG_ON(dl->dl_count != 1); | |
218 | spin_lock(&dentry_attach_lock); | |
219 | dentry->d_fsdata = NULL; | |
220 | spin_unlock(&dentry_attach_lock); | |
221 | kfree(dl); | |
222 | iput(inode); | |
223 | } | |
224 | ||
549c7297 CB |
225 | static int ocfs2_mknod(struct user_namespace *mnt_userns, |
226 | struct inode *dir, | |
ccd979bd | 227 | struct dentry *dentry, |
1a67aafb | 228 | umode_t mode, |
ccd979bd MF |
229 | dev_t dev) |
230 | { | |
231 | int status = 0; | |
232 | struct buffer_head *parent_fe_bh = NULL; | |
1fabe148 | 233 | handle_t *handle = NULL; |
ccd979bd MF |
234 | struct ocfs2_super *osb; |
235 | struct ocfs2_dinode *dirfe; | |
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 | ||
386 | if (S_ISDIR(mode)) { | |
387 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, | |
9b7895ef | 388 | new_fe_bh, data_ac, meta_ac); |
ccd979bd MF |
389 | if (status < 0) { |
390 | mlog_errno(status); | |
391 | goto leave; | |
392 | } | |
393 | ||
0cf2f763 JB |
394 | status = ocfs2_journal_access_di(handle, INODE_CACHE(dir), |
395 | parent_fe_bh, | |
13723d00 | 396 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
397 | if (status < 0) { |
398 | mlog_errno(status); | |
399 | goto leave; | |
400 | } | |
198a1ca3 | 401 | ocfs2_add_links_count(dirfe, 1); |
ec20cec7 | 402 | ocfs2_journal_dirty(handle, parent_fe_bh); |
d8c76e6f | 403 | inc_nlink(dir); |
ccd979bd MF |
404 | } |
405 | ||
c25a1e06 JB |
406 | status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh, |
407 | meta_ac, data_ac); | |
702e5bc6 | 408 | |
89c38bd0 TY |
409 | if (status < 0) { |
410 | mlog_errno(status); | |
0434c9f4 | 411 | goto roll_back; |
89c38bd0 TY |
412 | } |
413 | ||
534eaddd TY |
414 | if (si.enable) { |
415 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
9b7895ef | 416 | meta_ac, data_ac); |
534eaddd TY |
417 | if (status < 0) { |
418 | mlog_errno(status); | |
0434c9f4 | 419 | goto roll_back; |
534eaddd TY |
420 | } |
421 | } | |
422 | ||
a9743fcd MF |
423 | /* |
424 | * Do this before adding the entry to the directory. We add | |
425 | * also set d_op after success so that ->d_iput() will cleanup | |
426 | * the dentry lock even if ocfs2_add_entry() fails below. | |
427 | */ | |
428 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
429 | OCFS2_I(dir)->ip_blkno); | |
430 | if (status) { | |
ccd979bd | 431 | mlog_errno(status); |
0434c9f4 | 432 | goto roll_back; |
ccd979bd MF |
433 | } |
434 | ||
595297a8 | 435 | dl = dentry->d_fsdata; |
436 | ||
a9743fcd MF |
437 | status = ocfs2_add_entry(handle, dentry, inode, |
438 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
439 | &lookup); | |
440 | if (status < 0) { | |
379dfe9d | 441 | mlog_errno(status); |
0434c9f4 | 442 | goto roll_back; |
379dfe9d MF |
443 | } |
444 | ||
ccd979bd | 445 | insert_inode_hash(inode); |
ccd979bd MF |
446 | d_instantiate(dentry, inode); |
447 | status = 0; | |
0434c9f4 | 448 | |
449 | roll_back: | |
450 | if (status < 0 && S_ISDIR(mode)) { | |
451 | ocfs2_add_links_count(dirfe, -1); | |
452 | drop_nlink(dir); | |
453 | } | |
454 | ||
ccd979bd | 455 | leave: |
a90714c1 | 456 | if (status < 0 && did_quota_inode) |
63936dda | 457 | dquot_free_inode(inode); |
ccd979bd | 458 | if (handle) |
02dc1af4 | 459 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 460 | |
e63aecb6 | 461 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
462 | if (did_block_signals) |
463 | ocfs2_unblock_signals(&oldset); | |
e3a82138 | 464 | |
a81cb88b | 465 | brelse(new_fe_bh); |
a81cb88b | 466 | brelse(parent_fe_bh); |
534eaddd | 467 | kfree(si.value); |
ccd979bd | 468 | |
4a12ca3a MF |
469 | ocfs2_free_dir_lookup_result(&lookup); |
470 | ||
ccd979bd MF |
471 | if (inode_ac) |
472 | ocfs2_free_alloc_context(inode_ac); | |
473 | ||
474 | if (data_ac) | |
475 | ocfs2_free_alloc_context(data_ac); | |
476 | ||
9b7895ef MF |
477 | if (meta_ac) |
478 | ocfs2_free_alloc_context(meta_ac); | |
534eaddd | 479 | |
062d3403 LD |
480 | /* |
481 | * We should call iput after the i_mutex of the bitmap been | |
482 | * unlocked in ocfs2_free_alloc_context, or the | |
483 | * ocfs2_delete_inode will mutex_lock again. | |
484 | */ | |
485 | if ((status < 0) && inode) { | |
595297a8 | 486 | if (dl) |
487 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
488 | ||
062d3403 LD |
489 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
490 | clear_nlink(inode); | |
491 | iput(inode); | |
492 | } | |
493 | ||
c1e8d35e TM |
494 | if (status) |
495 | mlog_errno(status); | |
ccd979bd MF |
496 | |
497 | return status; | |
498 | } | |
499 | ||
021960ca MF |
500 | static int __ocfs2_mknod_locked(struct inode *dir, |
501 | struct inode *inode, | |
502 | dev_t dev, | |
503 | struct buffer_head **new_fe_bh, | |
504 | struct buffer_head *parent_fe_bh, | |
505 | handle_t *handle, | |
506 | struct ocfs2_alloc_context *inode_ac, | |
507 | u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit) | |
ccd979bd MF |
508 | { |
509 | int status = 0; | |
021960ca | 510 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
ccd979bd MF |
511 | struct ocfs2_dinode *fe = NULL; |
512 | struct ocfs2_extent_list *fel; | |
9b7895ef | 513 | u16 feat; |
2931cdcb | 514 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
c62c38f6 | 515 | struct timespec64 ts; |
ccd979bd | 516 | |
ccd979bd | 517 | *new_fe_bh = NULL; |
ccd979bd | 518 | |
ccd979bd MF |
519 | /* populate as many fields early on as possible - many of |
520 | * these are used by the support functions here and in | |
521 | * callers. */ | |
522 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
d324cd4c | 523 | oi->ip_blkno = fe_blkno; |
ccd979bd MF |
524 | spin_lock(&osb->osb_lock); |
525 | inode->i_generation = osb->s_next_generation++; | |
526 | spin_unlock(&osb->osb_lock); | |
527 | ||
528 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
529 | if (!*new_fe_bh) { | |
7391a294 | 530 | status = -ENOMEM; |
ccd979bd MF |
531 | mlog_errno(status); |
532 | goto leave; | |
533 | } | |
8cb471e8 | 534 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
ccd979bd | 535 | |
0cf2f763 JB |
536 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
537 | *new_fe_bh, | |
13723d00 | 538 | OCFS2_JOURNAL_ACCESS_CREATE); |
ccd979bd MF |
539 | if (status < 0) { |
540 | mlog_errno(status); | |
541 | goto leave; | |
542 | } | |
543 | ||
544 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
545 | memset(fe, 0, osb->sb->s_blocksize); | |
546 | ||
547 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
548 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
549 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
2b6cb576 | 550 | fe->i_suballoc_loc = cpu_to_le64(suballoc_loc); |
ccd979bd | 551 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); |
4d0ddb2c | 552 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
2c034176 EB |
553 | fe->i_uid = cpu_to_le32(i_uid_read(inode)); |
554 | fe->i_gid = cpu_to_le32(i_gid_read(inode)); | |
f5d36202 TY |
555 | fe->i_mode = cpu_to_le16(inode->i_mode); |
556 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 557 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
198a1ca3 MF |
558 | |
559 | ocfs2_set_links_count(fe, inode->i_nlink); | |
ccd979bd MF |
560 | |
561 | fe->i_last_eb_blk = 0; | |
562 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
13eb9887 | 563 | fe->i_flags |= cpu_to_le32(OCFS2_VALID_FL); |
c62c38f6 | 564 | ktime_get_real_ts64(&ts); |
ccd979bd | 565 | fe->i_atime = fe->i_ctime = fe->i_mtime = |
c62c38f6 | 566 | cpu_to_le64(ts.tv_sec); |
ccd979bd | 567 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = |
c62c38f6 | 568 | cpu_to_le32(ts.tv_nsec); |
ccd979bd MF |
569 | fe->i_dtime = 0; |
570 | ||
5b6a3a2b | 571 | /* |
9b7895ef MF |
572 | * If supported, directories start with inline data. If inline |
573 | * isn't supported, but indexing is, we start them as indexed. | |
5b6a3a2b | 574 | */ |
9b7895ef | 575 | feat = le16_to_cpu(fe->i_dyn_features); |
f5d36202 | 576 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
577 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
578 | ||
d9ae49d6 TY |
579 | fe->id2.i_data.id_count = cpu_to_le16( |
580 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); | |
5b6a3a2b MF |
581 | } else { |
582 | fel = &fe->id2.i_list; | |
583 | fel->l_tree_depth = 0; | |
584 | fel->l_next_free_rec = 0; | |
585 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
586 | } | |
ccd979bd | 587 | |
ec20cec7 | 588 | ocfs2_journal_dirty(handle, *new_fe_bh); |
ccd979bd | 589 | |
b657c95c | 590 | ocfs2_populate_inode(inode, fe, 1); |
0cf2f763 | 591 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
c271c5c2 SM |
592 | if (!ocfs2_mount_local(osb)) { |
593 | status = ocfs2_create_new_inode_locks(inode); | |
594 | if (status < 0) | |
595 | mlog_errno(status); | |
596 | } | |
ccd979bd | 597 | |
25b69918 | 598 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
2931cdcb | 599 | |
ccd979bd MF |
600 | leave: |
601 | if (status < 0) { | |
602 | if (*new_fe_bh) { | |
603 | brelse(*new_fe_bh); | |
604 | *new_fe_bh = NULL; | |
605 | } | |
ccd979bd MF |
606 | } |
607 | ||
c1e8d35e TM |
608 | if (status) |
609 | mlog_errno(status); | |
ccd979bd MF |
610 | return status; |
611 | } | |
612 | ||
021960ca MF |
613 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
614 | struct inode *dir, | |
615 | struct inode *inode, | |
616 | dev_t dev, | |
617 | struct buffer_head **new_fe_bh, | |
618 | struct buffer_head *parent_fe_bh, | |
619 | handle_t *handle, | |
620 | struct ocfs2_alloc_context *inode_ac) | |
621 | { | |
622 | int status = 0; | |
623 | u64 suballoc_loc, fe_blkno = 0; | |
624 | u16 suballoc_bit; | |
625 | ||
626 | *new_fe_bh = NULL; | |
627 | ||
628 | status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh, | |
629 | inode_ac, &suballoc_loc, | |
630 | &suballoc_bit, &fe_blkno); | |
631 | if (status < 0) { | |
632 | mlog_errno(status); | |
633 | return status; | |
634 | } | |
635 | ||
b1529a41 | 636 | status = __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh, |
021960ca MF |
637 | parent_fe_bh, handle, inode_ac, |
638 | fe_blkno, suballoc_loc, suballoc_bit); | |
b1529a41 | 639 | if (status < 0) { |
640 | u64 bg_blkno = ocfs2_which_suballoc_group(fe_blkno, suballoc_bit); | |
641 | int tmp = ocfs2_free_suballoc_bits(handle, inode_ac->ac_inode, | |
642 | inode_ac->ac_bh, suballoc_bit, bg_blkno, 1); | |
643 | if (tmp) | |
644 | mlog_errno(tmp); | |
645 | } | |
646 | ||
647 | return status; | |
021960ca MF |
648 | } |
649 | ||
549c7297 CB |
650 | static int ocfs2_mkdir(struct user_namespace *mnt_userns, |
651 | struct inode *dir, | |
ccd979bd | 652 | struct dentry *dentry, |
18bb1db3 | 653 | umode_t mode) |
ccd979bd MF |
654 | { |
655 | int ret; | |
656 | ||
8990e44a TM |
657 | trace_ocfs2_mkdir(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
658 | OCFS2_I(dir)->ip_blkno, mode); | |
549c7297 | 659 | ret = ocfs2_mknod(&init_user_ns, dir, dentry, mode | S_IFDIR, 0); |
c1e8d35e TM |
660 | if (ret) |
661 | mlog_errno(ret); | |
ccd979bd MF |
662 | |
663 | return ret; | |
664 | } | |
665 | ||
549c7297 CB |
666 | static int ocfs2_create(struct user_namespace *mnt_userns, |
667 | struct inode *dir, | |
ccd979bd | 668 | struct dentry *dentry, |
4acdaf27 | 669 | umode_t mode, |
ebfc3b49 | 670 | bool excl) |
ccd979bd MF |
671 | { |
672 | int ret; | |
673 | ||
8990e44a TM |
674 | trace_ocfs2_create(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
675 | (unsigned long long)OCFS2_I(dir)->ip_blkno, mode); | |
549c7297 | 676 | ret = ocfs2_mknod(&init_user_ns, dir, dentry, mode | S_IFREG, 0); |
c1e8d35e TM |
677 | if (ret) |
678 | mlog_errno(ret); | |
ccd979bd MF |
679 | |
680 | return ret; | |
681 | } | |
682 | ||
683 | static int ocfs2_link(struct dentry *old_dentry, | |
684 | struct inode *dir, | |
685 | struct dentry *dentry) | |
686 | { | |
1fabe148 | 687 | handle_t *handle; |
2b0143b5 DH |
688 | struct inode *inode = d_inode(old_dentry); |
689 | struct inode *old_dir = d_inode(old_dentry->d_parent); | |
ccd979bd MF |
690 | int err; |
691 | struct buffer_head *fe_bh = NULL; | |
53dc20b9 | 692 | struct buffer_head *old_dir_bh = NULL; |
ccd979bd | 693 | struct buffer_head *parent_fe_bh = NULL; |
ccd979bd MF |
694 | struct ocfs2_dinode *fe = NULL; |
695 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
4a12ca3a | 696 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 | 697 | sigset_t oldset; |
0e048316 | 698 | u64 old_de_ino; |
ccd979bd | 699 | |
8990e44a TM |
700 | trace_ocfs2_link((unsigned long long)OCFS2_I(inode)->ip_blkno, |
701 | old_dentry->d_name.len, old_dentry->d_name.name, | |
702 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 703 | |
123a9643 MF |
704 | if (S_ISDIR(inode->i_mode)) |
705 | return -EPERM; | |
ccd979bd | 706 | |
9c89fe0a JK |
707 | err = dquot_initialize(dir); |
708 | if (err) { | |
709 | mlog_errno(err); | |
710 | return err; | |
711 | } | |
907f4554 | 712 | |
53dc20b9 X |
713 | err = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
714 | &parent_fe_bh, dir, 0); | |
ccd979bd MF |
715 | if (err < 0) { |
716 | if (err != -ENOENT) | |
717 | mlog_errno(err); | |
123a9643 | 718 | return err; |
ccd979bd MF |
719 | } |
720 | ||
53dc20b9 X |
721 | /* make sure both dirs have bhs |
722 | * get an extra ref on old_dir_bh if old==new */ | |
723 | if (!parent_fe_bh) { | |
724 | if (old_dir_bh) { | |
725 | parent_fe_bh = old_dir_bh; | |
726 | get_bh(parent_fe_bh); | |
727 | } else { | |
728 | mlog(ML_ERROR, "%s: no old_dir_bh!\n", osb->uuid_str); | |
729 | err = -EIO; | |
730 | goto out; | |
731 | } | |
732 | } | |
733 | ||
0f62de2c TY |
734 | if (!dir->i_nlink) { |
735 | err = -ENOENT; | |
123a9643 | 736 | goto out; |
0f62de2c TY |
737 | } |
738 | ||
53dc20b9 | 739 | err = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
0e048316 X |
740 | old_dentry->d_name.len, &old_de_ino); |
741 | if (err) { | |
742 | err = -ENOENT; | |
743 | goto out; | |
744 | } | |
745 | ||
746 | /* | |
747 | * Check whether another node removed the source inode while we | |
748 | * were in the vfs. | |
749 | */ | |
750 | if (old_de_ino != OCFS2_I(inode)->ip_blkno) { | |
751 | err = -ENOENT; | |
752 | goto out; | |
753 | } | |
754 | ||
ccd979bd MF |
755 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
756 | dentry->d_name.len); | |
757 | if (err) | |
123a9643 | 758 | goto out; |
ccd979bd MF |
759 | |
760 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
761 | dentry->d_name.name, | |
4a12ca3a | 762 | dentry->d_name.len, &lookup); |
ccd979bd MF |
763 | if (err < 0) { |
764 | mlog_errno(err); | |
123a9643 | 765 | goto out; |
ccd979bd MF |
766 | } |
767 | ||
e63aecb6 | 768 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
769 | if (err < 0) { |
770 | if (err != -ENOENT) | |
771 | mlog_errno(err); | |
123a9643 | 772 | goto out; |
ccd979bd MF |
773 | } |
774 | ||
775 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
198a1ca3 | 776 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
ccd979bd | 777 | err = -EMLINK; |
123a9643 | 778 | goto out_unlock_inode; |
ccd979bd MF |
779 | } |
780 | ||
a90714c1 | 781 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
782 | if (IS_ERR(handle)) { |
783 | err = PTR_ERR(handle); | |
784 | handle = NULL; | |
785 | mlog_errno(err); | |
123a9643 | 786 | goto out_unlock_inode; |
ccd979bd MF |
787 | } |
788 | ||
547ba7c8 JB |
789 | /* Starting to change things, restart is no longer possible. */ |
790 | ocfs2_block_signals(&oldset); | |
791 | ||
0cf2f763 | 792 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 793 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
794 | if (err < 0) { |
795 | mlog_errno(err); | |
123a9643 | 796 | goto out_commit; |
ccd979bd MF |
797 | } |
798 | ||
d8c76e6f | 799 | inc_nlink(inode); |
078cd827 | 800 | inode->i_ctime = current_time(inode); |
198a1ca3 | 801 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
802 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
803 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
ec20cec7 | 804 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd MF |
805 | |
806 | err = ocfs2_add_entry(handle, dentry, inode, | |
807 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 808 | parent_fe_bh, &lookup); |
ccd979bd | 809 | if (err) { |
198a1ca3 | 810 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 811 | drop_nlink(inode); |
ccd979bd | 812 | mlog_errno(err); |
123a9643 | 813 | goto out_commit; |
ccd979bd MF |
814 | } |
815 | ||
0027dd5b | 816 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
817 | if (err) { |
818 | mlog_errno(err); | |
123a9643 | 819 | goto out_commit; |
379dfe9d MF |
820 | } |
821 | ||
7de9c6ee | 822 | ihold(inode); |
ccd979bd | 823 | d_instantiate(dentry, inode); |
123a9643 MF |
824 | |
825 | out_commit: | |
02dc1af4 | 826 | ocfs2_commit_trans(osb, handle); |
547ba7c8 | 827 | ocfs2_unblock_signals(&oldset); |
123a9643 | 828 | out_unlock_inode: |
e63aecb6 | 829 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
830 | |
831 | out: | |
53dc20b9 | 832 | ocfs2_double_unlock(old_dir, dir); |
123a9643 | 833 | |
a81cb88b MF |
834 | brelse(fe_bh); |
835 | brelse(parent_fe_bh); | |
53dc20b9 | 836 | brelse(old_dir_bh); |
ccd979bd | 837 | |
4a12ca3a MF |
838 | ocfs2_free_dir_lookup_result(&lookup); |
839 | ||
c1e8d35e TM |
840 | if (err) |
841 | mlog_errno(err); | |
ccd979bd MF |
842 | |
843 | return err; | |
844 | } | |
845 | ||
379dfe9d MF |
846 | /* |
847 | * Takes and drops an exclusive lock on the given dentry. This will | |
848 | * force other nodes to drop it. | |
849 | */ | |
850 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
851 | { | |
852 | int ret; | |
853 | ||
854 | ret = ocfs2_dentry_lock(dentry, 1); | |
855 | if (ret) | |
856 | mlog_errno(ret); | |
857 | else | |
858 | ocfs2_dentry_unlock(dentry, 1); | |
859 | ||
860 | return ret; | |
861 | } | |
862 | ||
b5a8bb71 | 863 | static inline int ocfs2_inode_is_unlinkable(struct inode *inode) |
17ff7856 MF |
864 | { |
865 | if (S_ISDIR(inode->i_mode)) { | |
866 | if (inode->i_nlink == 2) | |
867 | return 1; | |
868 | return 0; | |
869 | } | |
870 | ||
871 | if (inode->i_nlink == 1) | |
872 | return 1; | |
873 | return 0; | |
874 | } | |
875 | ||
ccd979bd MF |
876 | static int ocfs2_unlink(struct inode *dir, |
877 | struct dentry *dentry) | |
878 | { | |
879 | int status; | |
30a4f5e8 | 880 | int child_locked = 0; |
b5a8bb71 | 881 | bool is_unlinkable = false; |
2b0143b5 | 882 | struct inode *inode = d_inode(dentry); |
5098c27b | 883 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
884 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
885 | u64 blkno; | |
886 | struct ocfs2_dinode *fe = NULL; | |
887 | struct buffer_head *fe_bh = NULL; | |
888 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 889 | handle_t *handle = NULL; |
ccd979bd | 890 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
891 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
892 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd | 893 | |
8990e44a TM |
894 | trace_ocfs2_unlink(dir, dentry, dentry->d_name.len, |
895 | dentry->d_name.name, | |
896 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
897 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 898 | |
9c89fe0a JK |
899 | status = dquot_initialize(dir); |
900 | if (status) { | |
901 | mlog_errno(status); | |
902 | return status; | |
903 | } | |
907f4554 | 904 | |
2b0143b5 | 905 | BUG_ON(d_inode(dentry->d_parent) != dir); |
ccd979bd | 906 | |
8990e44a | 907 | if (inode == osb->root_inode) |
30a4f5e8 | 908 | return -EPERM; |
ccd979bd | 909 | |
cb25797d JK |
910 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
911 | OI_LS_PARENT); | |
ccd979bd MF |
912 | if (status < 0) { |
913 | if (status != -ENOENT) | |
914 | mlog_errno(status); | |
30a4f5e8 | 915 | return status; |
ccd979bd MF |
916 | } |
917 | ||
918 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
919 | dentry->d_name.len, &blkno, dir, |
920 | &lookup); | |
ccd979bd MF |
921 | if (status < 0) { |
922 | if (status != -ENOENT) | |
923 | mlog_errno(status); | |
924 | goto leave; | |
925 | } | |
926 | ||
927 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
928 | status = -ENOENT; | |
929 | ||
8990e44a TM |
930 | trace_ocfs2_unlink_noent( |
931 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
932 | (unsigned long long)blkno, | |
933 | OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
934 | goto leave; |
935 | } | |
936 | ||
e63aecb6 | 937 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
938 | if (status < 0) { |
939 | if (status != -ENOENT) | |
940 | mlog_errno(status); | |
941 | goto leave; | |
942 | } | |
30a4f5e8 | 943 | child_locked = 1; |
ccd979bd MF |
944 | |
945 | if (S_ISDIR(inode->i_mode)) { | |
b80b549c | 946 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
ccd979bd MF |
947 | status = -ENOTEMPTY; |
948 | goto leave; | |
949 | } | |
950 | } | |
951 | ||
379dfe9d | 952 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 953 | if (status < 0) { |
34d024f8 | 954 | /* This remote delete should succeed under all normal |
ccd979bd MF |
955 | * circumstances. */ |
956 | mlog_errno(status); | |
957 | goto leave; | |
958 | } | |
959 | ||
b5a8bb71 | 960 | if (ocfs2_inode_is_unlinkable(inode)) { |
19bd341f TM |
961 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
962 | OCFS2_I(inode)->ip_blkno, | |
06ee5c75 JQ |
963 | orphan_name, &orphan_insert, |
964 | false); | |
ccd979bd MF |
965 | if (status < 0) { |
966 | mlog_errno(status); | |
967 | goto leave; | |
968 | } | |
b5a8bb71 | 969 | is_unlinkable = true; |
ccd979bd MF |
970 | } |
971 | ||
a90714c1 | 972 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
973 | if (IS_ERR(handle)) { |
974 | status = PTR_ERR(handle); | |
975 | handle = NULL; | |
976 | mlog_errno(status); | |
977 | goto leave; | |
978 | } | |
979 | ||
0cf2f763 | 980 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 981 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
982 | if (status < 0) { |
983 | mlog_errno(status); | |
984 | goto leave; | |
985 | } | |
986 | ||
987 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
988 | ||
ccd979bd | 989 | /* delete the name from the parent dir */ |
4a12ca3a | 990 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
991 | if (status < 0) { |
992 | mlog_errno(status); | |
993 | goto leave; | |
994 | } | |
995 | ||
17ff7856 MF |
996 | if (S_ISDIR(inode->i_mode)) |
997 | drop_nlink(inode); | |
998 | drop_nlink(inode); | |
198a1ca3 | 999 | ocfs2_set_links_count(fe, inode->i_nlink); |
ec20cec7 | 1000 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd | 1001 | |
078cd827 | 1002 | dir->i_ctime = dir->i_mtime = current_time(dir); |
592282cf | 1003 | if (S_ISDIR(inode->i_mode)) |
17ff7856 | 1004 | drop_nlink(dir); |
592282cf MF |
1005 | |
1006 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
1007 | if (status < 0) { | |
1008 | mlog_errno(status); | |
1009 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 1010 | inc_nlink(dir); |
b5a8bb71 YL |
1011 | goto leave; |
1012 | } | |
1013 | ||
1014 | if (is_unlinkable) { | |
1015 | status = ocfs2_orphan_add(osb, handle, inode, fe_bh, | |
06ee5c75 | 1016 | orphan_name, &orphan_insert, orphan_dir, false); |
b5a8bb71 YL |
1017 | if (status < 0) |
1018 | mlog_errno(status); | |
ccd979bd MF |
1019 | } |
1020 | ||
1021 | leave: | |
ccd979bd | 1022 | if (handle) |
02dc1af4 | 1023 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1024 | |
5098c27b MF |
1025 | if (orphan_dir) { |
1026 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1027 | ocfs2_inode_unlock(orphan_dir, 1); |
5955102c | 1028 | inode_unlock(orphan_dir); |
5098c27b MF |
1029 | iput(orphan_dir); |
1030 | } | |
1031 | ||
3cb2ec43 JQ |
1032 | if (child_locked) |
1033 | ocfs2_inode_unlock(inode, 1); | |
1034 | ||
1035 | ocfs2_inode_unlock(dir, 1); | |
1036 | ||
a81cb88b | 1037 | brelse(fe_bh); |
a81cb88b | 1038 | brelse(parent_node_bh); |
4a12ca3a MF |
1039 | |
1040 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1041 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd | 1042 | |
f5b25855 | 1043 | if (status && (status != -ENOTEMPTY) && (status != -ENOENT)) |
c1e8d35e | 1044 | mlog_errno(status); |
ccd979bd MF |
1045 | |
1046 | return status; | |
1047 | } | |
1048 | ||
f7a14f32 YJ |
1049 | static int ocfs2_check_if_ancestor(struct ocfs2_super *osb, |
1050 | u64 src_inode_no, u64 dest_inode_no) | |
1051 | { | |
1052 | int ret = 0, i = 0; | |
1053 | u64 parent_inode_no = 0; | |
1054 | u64 child_inode_no = src_inode_no; | |
1055 | struct inode *child_inode; | |
1056 | ||
1057 | #define MAX_LOOKUP_TIMES 32 | |
1058 | while (1) { | |
1059 | child_inode = ocfs2_iget(osb, child_inode_no, 0, 0); | |
1060 | if (IS_ERR(child_inode)) { | |
1061 | ret = PTR_ERR(child_inode); | |
1062 | break; | |
1063 | } | |
1064 | ||
1065 | ret = ocfs2_inode_lock(child_inode, NULL, 0); | |
1066 | if (ret < 0) { | |
1067 | iput(child_inode); | |
1068 | if (ret != -ENOENT) | |
1069 | mlog_errno(ret); | |
1070 | break; | |
1071 | } | |
1072 | ||
1073 | ret = ocfs2_lookup_ino_from_name(child_inode, "..", 2, | |
1074 | &parent_inode_no); | |
1075 | ocfs2_inode_unlock(child_inode, 0); | |
1076 | iput(child_inode); | |
1077 | if (ret < 0) { | |
1078 | ret = -ENOENT; | |
1079 | break; | |
1080 | } | |
1081 | ||
1082 | if (parent_inode_no == dest_inode_no) { | |
1083 | ret = 1; | |
1084 | break; | |
1085 | } | |
1086 | ||
1087 | if (parent_inode_no == osb->root_inode->i_ino) { | |
1088 | ret = 0; | |
1089 | break; | |
1090 | } | |
1091 | ||
1092 | child_inode_no = parent_inode_no; | |
1093 | ||
1094 | if (++i >= MAX_LOOKUP_TIMES) { | |
45680967 MFO |
1095 | mlog_ratelimited(ML_NOTICE, "max lookup times reached, " |
1096 | "filesystem may have nested directories, " | |
f7a14f32 YJ |
1097 | "src inode: %llu, dest inode: %llu.\n", |
1098 | (unsigned long long)src_inode_no, | |
1099 | (unsigned long long)dest_inode_no); | |
1100 | ret = 0; | |
1101 | break; | |
1102 | } | |
1103 | } | |
1104 | ||
1105 | return ret; | |
1106 | } | |
1107 | ||
ccd979bd | 1108 | /* |
53dc20b9 | 1109 | * The only place this should be used is rename and link! |
ccd979bd MF |
1110 | * if they have the same id, then the 1st one is the only one locked. |
1111 | */ | |
1112 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
1113 | struct buffer_head **bh1, |
1114 | struct inode *inode1, | |
1115 | struct buffer_head **bh2, | |
53dc20b9 X |
1116 | struct inode *inode2, |
1117 | int rename) | |
ccd979bd MF |
1118 | { |
1119 | int status; | |
f7a14f32 | 1120 | int inode1_is_ancestor, inode2_is_ancestor; |
ccd979bd MF |
1121 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); |
1122 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
ccd979bd | 1123 | |
8990e44a TM |
1124 | trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno, |
1125 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 1126 | |
ccd979bd MF |
1127 | if (*bh1) |
1128 | *bh1 = NULL; | |
1129 | if (*bh2) | |
1130 | *bh2 = NULL; | |
1131 | ||
f7a14f32 YJ |
1132 | /* we always want to lock the one with the lower lockid first. |
1133 | * and if they are nested, we lock ancestor first */ | |
ccd979bd | 1134 | if (oi1->ip_blkno != oi2->ip_blkno) { |
f7a14f32 YJ |
1135 | inode1_is_ancestor = ocfs2_check_if_ancestor(osb, oi2->ip_blkno, |
1136 | oi1->ip_blkno); | |
1137 | if (inode1_is_ancestor < 0) { | |
1138 | status = inode1_is_ancestor; | |
1139 | goto bail; | |
1140 | } | |
1141 | ||
1142 | inode2_is_ancestor = ocfs2_check_if_ancestor(osb, oi1->ip_blkno, | |
1143 | oi2->ip_blkno); | |
1144 | if (inode2_is_ancestor < 0) { | |
1145 | status = inode2_is_ancestor; | |
1146 | goto bail; | |
1147 | } | |
1148 | ||
1149 | if ((inode1_is_ancestor == 1) || | |
1150 | (oi1->ip_blkno < oi2->ip_blkno && | |
1151 | inode2_is_ancestor == 0)) { | |
ccd979bd | 1152 | /* switch id1 and id2 around */ |
ab1ba021 FF |
1153 | swap(bh2, bh1); |
1154 | swap(inode2, inode1); | |
ccd979bd MF |
1155 | } |
1156 | /* lock id2 */ | |
cb25797d | 1157 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
53dc20b9 | 1158 | rename == 1 ? OI_LS_RENAME1 : OI_LS_PARENT); |
ccd979bd MF |
1159 | if (status < 0) { |
1160 | if (status != -ENOENT) | |
1161 | mlog_errno(status); | |
1162 | goto bail; | |
1163 | } | |
1164 | } | |
8d5596c6 | 1165 | |
ccd979bd | 1166 | /* lock id1 */ |
53dc20b9 X |
1167 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, |
1168 | rename == 1 ? OI_LS_RENAME2 : OI_LS_PARENT); | |
ccd979bd | 1169 | if (status < 0) { |
8d5596c6 MF |
1170 | /* |
1171 | * An error return must mean that no cluster locks | |
1172 | * were held on function exit. | |
1173 | */ | |
1e6d9153 | 1174 | if (oi1->ip_blkno != oi2->ip_blkno) { |
e63aecb6 | 1175 | ocfs2_inode_unlock(inode2, 1); |
1e6d9153 TM |
1176 | brelse(*bh2); |
1177 | *bh2 = NULL; | |
1178 | } | |
8d5596c6 | 1179 | |
ccd979bd MF |
1180 | if (status != -ENOENT) |
1181 | mlog_errno(status); | |
ccd979bd | 1182 | } |
8d5596c6 | 1183 | |
8990e44a | 1184 | trace_ocfs2_double_lock_end( |
d324cd4c | 1185 | (unsigned long long)oi1->ip_blkno, |
1186 | (unsigned long long)oi2->ip_blkno); | |
8990e44a | 1187 | |
ccd979bd | 1188 | bail: |
c1e8d35e TM |
1189 | if (status) |
1190 | mlog_errno(status); | |
ccd979bd MF |
1191 | return status; |
1192 | } | |
1193 | ||
8d5596c6 MF |
1194 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
1195 | { | |
e63aecb6 | 1196 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
1197 | |
1198 | if (inode1 != inode2) | |
e63aecb6 | 1199 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1200 | } |
1201 | ||
549c7297 CB |
1202 | static int ocfs2_rename(struct user_namespace *mnt_userns, |
1203 | struct inode *old_dir, | |
ccd979bd MF |
1204 | struct dentry *old_dentry, |
1205 | struct inode *new_dir, | |
1cd66c93 MS |
1206 | struct dentry *new_dentry, |
1207 | unsigned int flags) | |
ccd979bd | 1208 | { |
4a12ca3a MF |
1209 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1210 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
2b0143b5 DH |
1211 | struct inode *old_inode = d_inode(old_dentry); |
1212 | struct inode *new_inode = d_inode(new_dentry); | |
5098c27b | 1213 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1214 | struct ocfs2_dinode *newfe = NULL; |
1215 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
ccd979bd | 1216 | struct buffer_head *newfe_bh = NULL; |
592282cf | 1217 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd | 1218 | struct ocfs2_super *osb = NULL; |
5b6a3a2b | 1219 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1220 | handle_t *handle = NULL; |
ccd979bd MF |
1221 | struct buffer_head *old_dir_bh = NULL; |
1222 | struct buffer_head *new_dir_bh = NULL; | |
847c9db5 | 1223 | u32 old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1224 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1225 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1226 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1227 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1228 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1229 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
5fb1beb0 | 1230 | bool should_add_orphan = false; |
ccd979bd | 1231 | |
1cd66c93 MS |
1232 | if (flags) |
1233 | return -EINVAL; | |
1234 | ||
ccd979bd MF |
1235 | /* At some point it might be nice to break this function up a |
1236 | * bit. */ | |
1237 | ||
8990e44a TM |
1238 | trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry, |
1239 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1240 | new_dentry->d_name.len, new_dentry->d_name.name); | |
ccd979bd | 1241 | |
9c89fe0a JK |
1242 | status = dquot_initialize(old_dir); |
1243 | if (status) { | |
1244 | mlog_errno(status); | |
1245 | goto bail; | |
1246 | } | |
1247 | status = dquot_initialize(new_dir); | |
1248 | if (status) { | |
1249 | mlog_errno(status); | |
1250 | goto bail; | |
1251 | } | |
907f4554 | 1252 | |
ccd979bd MF |
1253 | osb = OCFS2_SB(old_dir->i_sb); |
1254 | ||
1255 | if (new_inode) { | |
1256 | if (!igrab(new_inode)) | |
1257 | BUG(); | |
1258 | } | |
1259 | ||
1b3c3714 | 1260 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1261 | * a/b/c |
1262 | * a/d | |
1263 | * a,b,c, and d are all directories. | |
1264 | * | |
1265 | * from cwd of 'a' on both nodes: | |
1266 | * node1: mv b/c d | |
1267 | * node2: mv d b/c | |
1268 | * | |
1269 | * And that's why, just like the VFS, we need a file system | |
1270 | * rename lock. */ | |
5dabd695 | 1271 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1272 | status = ocfs2_rename_lock(osb); |
1273 | if (status < 0) { | |
1274 | mlog_errno(status); | |
1275 | goto bail; | |
1276 | } | |
1277 | rename_lock = 1; | |
f7a14f32 YJ |
1278 | |
1279 | /* here we cannot guarantee the inodes haven't just been | |
1280 | * changed, so check if they are nested again */ | |
1281 | status = ocfs2_check_if_ancestor(osb, new_dir->i_ino, | |
1282 | old_inode->i_ino); | |
1283 | if (status < 0) { | |
1284 | mlog_errno(status); | |
1285 | goto bail; | |
1286 | } else if (status == 1) { | |
1287 | status = -EPERM; | |
1288 | trace_ocfs2_rename_not_permitted( | |
1289 | (unsigned long long)old_inode->i_ino, | |
1290 | (unsigned long long)new_dir->i_ino); | |
1291 | goto bail; | |
1292 | } | |
ccd979bd MF |
1293 | } |
1294 | ||
ccd979bd | 1295 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 | 1296 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
53dc20b9 | 1297 | &new_dir_bh, new_dir, 1); |
ccd979bd MF |
1298 | if (status < 0) { |
1299 | mlog_errno(status); | |
1300 | goto bail; | |
1301 | } | |
8d5596c6 | 1302 | parents_locked = 1; |
ccd979bd | 1303 | |
928dda1f YJ |
1304 | if (!new_dir->i_nlink) { |
1305 | status = -EACCES; | |
1306 | goto bail; | |
1307 | } | |
1308 | ||
ccd979bd MF |
1309 | /* make sure both dirs have bhs |
1310 | * get an extra ref on old_dir_bh if old==new */ | |
1311 | if (!new_dir_bh) { | |
1312 | if (old_dir_bh) { | |
1313 | new_dir_bh = old_dir_bh; | |
1314 | get_bh(new_dir_bh); | |
1315 | } else { | |
1316 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1317 | status = -EIO; | |
1318 | goto bail; | |
1319 | } | |
1320 | } | |
1321 | ||
379dfe9d | 1322 | /* |
592282cf | 1323 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1324 | * also ensures that the downconvert thread on other nodes |
1325 | * won't have to concurrently downconvert the inode and the | |
1326 | * dentry locks. | |
379dfe9d | 1327 | */ |
cb25797d JK |
1328 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
1329 | OI_LS_PARENT); | |
379dfe9d MF |
1330 | if (status < 0) { |
1331 | if (status != -ENOENT) | |
ccd979bd | 1332 | mlog_errno(status); |
379dfe9d MF |
1333 | goto bail; |
1334 | } | |
8d5596c6 | 1335 | old_child_locked = 1; |
ccd979bd | 1336 | |
379dfe9d MF |
1337 | status = ocfs2_remote_dentry_delete(old_dentry); |
1338 | if (status < 0) { | |
1339 | mlog_errno(status); | |
1340 | goto bail; | |
1341 | } | |
1342 | ||
1343 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1344 | u64 old_inode_parent; |
1345 | ||
4a12ca3a | 1346 | update_dot_dot = 1; |
38760e24 | 1347 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1348 | old_inode, |
1349 | &old_inode_dot_dot_res); | |
38760e24 MF |
1350 | if (status) { |
1351 | status = -EIO; | |
ccd979bd | 1352 | goto bail; |
38760e24 | 1353 | } |
ccd979bd | 1354 | |
38760e24 MF |
1355 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1356 | status = -EIO; | |
ccd979bd | 1357 | goto bail; |
38760e24 MF |
1358 | } |
1359 | ||
1360 | if (!new_inode && new_dir != old_dir && | |
198a1ca3 | 1361 | new_dir->i_nlink >= ocfs2_link_max(osb)) { |
38760e24 | 1362 | status = -EMLINK; |
ccd979bd | 1363 | goto bail; |
38760e24 | 1364 | } |
ccd979bd MF |
1365 | } |
1366 | ||
5b6a3a2b MF |
1367 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1368 | old_dentry->d_name.len, | |
1369 | &old_de_ino); | |
1370 | if (status) { | |
1371 | status = -ENOENT; | |
ccd979bd | 1372 | goto bail; |
5b6a3a2b | 1373 | } |
ccd979bd MF |
1374 | |
1375 | /* | |
1376 | * Check for inode number is _not_ due to possible IO errors. | |
1377 | * We might rmdir the source, keep it as pwd of some process | |
1378 | * and merrily kill the link to whatever was created under the | |
1379 | * same name. Goodbye sticky bit ;-< | |
1380 | */ | |
5b6a3a2b MF |
1381 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1382 | status = -ENOENT; | |
ccd979bd | 1383 | goto bail; |
5b6a3a2b | 1384 | } |
ccd979bd MF |
1385 | |
1386 | /* check if the target already exists (in which case we need | |
1387 | * to delete it */ | |
1388 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1389 | new_dentry->d_name.len, | |
4a12ca3a MF |
1390 | &newfe_blkno, new_dir, |
1391 | &target_lookup_res); | |
ccd979bd MF |
1392 | /* The only error we allow here is -ENOENT because the new |
1393 | * file not existing is perfectly valid. */ | |
1394 | if ((status < 0) && (status != -ENOENT)) { | |
1395 | /* If we cannot find the file specified we should just */ | |
1396 | /* return the error... */ | |
1397 | mlog_errno(status); | |
1398 | goto bail; | |
1399 | } | |
4a12ca3a MF |
1400 | if (status == 0) |
1401 | target_exists = 1; | |
ccd979bd | 1402 | |
4a12ca3a | 1403 | if (!target_exists && new_inode) { |
e325a88f SE |
1404 | /* |
1405 | * Target was unlinked by another node while we were | |
1406 | * waiting to get to ocfs2_rename(). There isn't | |
1407 | * anything we can do here to help the situation, so | |
1408 | * bubble up the appropriate error. | |
1409 | */ | |
1410 | status = -ENOENT; | |
1411 | goto bail; | |
1412 | } | |
ccd979bd MF |
1413 | |
1414 | /* In case we need to overwrite an existing file, we blow it | |
1415 | * away first */ | |
4a12ca3a | 1416 | if (target_exists) { |
ccd979bd MF |
1417 | /* VFS didn't think there existed an inode here, but |
1418 | * someone else in the cluster must have raced our | |
1419 | * rename to create one. Today we error cleanly, in | |
1420 | * the future we should consider calling iget to build | |
1421 | * a new struct inode for this entry. */ | |
1422 | if (!new_inode) { | |
1423 | status = -EACCES; | |
1424 | ||
8990e44a TM |
1425 | trace_ocfs2_rename_target_exists(new_dentry->d_name.len, |
1426 | new_dentry->d_name.name); | |
ccd979bd MF |
1427 | goto bail; |
1428 | } | |
1429 | ||
1430 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1431 | status = -EACCES; | |
1432 | ||
8990e44a | 1433 | trace_ocfs2_rename_disagree( |
b0697053 MF |
1434 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, |
1435 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1436 | OCFS2_I(new_inode)->ip_flags); |
1437 | goto bail; | |
1438 | } | |
1439 | ||
e63aecb6 | 1440 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1441 | if (status < 0) { |
1442 | if (status != -ENOENT) | |
1443 | mlog_errno(status); | |
1444 | goto bail; | |
1445 | } | |
8d5596c6 | 1446 | new_child_locked = 1; |
ccd979bd | 1447 | |
379dfe9d | 1448 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1449 | if (status < 0) { |
1450 | mlog_errno(status); | |
1451 | goto bail; | |
1452 | } | |
1453 | ||
1454 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1455 | ||
8990e44a | 1456 | trace_ocfs2_rename_over_existing( |
b0697053 | 1457 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1458 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1459 | ||
1460 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1461 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
19bd341f | 1462 | OCFS2_I(new_inode)->ip_blkno, |
06ee5c75 JQ |
1463 | orphan_name, &orphan_insert, |
1464 | false); | |
ccd979bd MF |
1465 | if (status < 0) { |
1466 | mlog_errno(status); | |
1467 | goto bail; | |
1468 | } | |
5fb1beb0 | 1469 | should_add_orphan = true; |
ccd979bd MF |
1470 | } |
1471 | } else { | |
2b0143b5 | 1472 | BUG_ON(d_inode(new_dentry->d_parent) != new_dir); |
ccd979bd MF |
1473 | |
1474 | status = ocfs2_check_dir_for_entry(new_dir, | |
1475 | new_dentry->d_name.name, | |
1476 | new_dentry->d_name.len); | |
1477 | if (status) | |
1478 | goto bail; | |
1479 | ||
1480 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1481 | new_dentry->d_name.name, | |
1482 | new_dentry->d_name.len, | |
4a12ca3a | 1483 | &target_insert); |
ccd979bd MF |
1484 | if (status < 0) { |
1485 | mlog_errno(status); | |
1486 | goto bail; | |
1487 | } | |
1488 | } | |
1489 | ||
a90714c1 | 1490 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1491 | if (IS_ERR(handle)) { |
1492 | status = PTR_ERR(handle); | |
1493 | handle = NULL; | |
1494 | mlog_errno(status); | |
1495 | goto bail; | |
1496 | } | |
1497 | ||
4a12ca3a | 1498 | if (target_exists) { |
ccd979bd | 1499 | if (S_ISDIR(new_inode->i_mode)) { |
b80b549c MF |
1500 | if (new_inode->i_nlink != 2 || |
1501 | !ocfs2_empty_dir(new_inode)) { | |
ccd979bd MF |
1502 | status = -ENOTEMPTY; |
1503 | goto bail; | |
1504 | } | |
1505 | } | |
0cf2f763 JB |
1506 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
1507 | newfe_bh, | |
13723d00 | 1508 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1509 | if (status < 0) { |
1510 | mlog_errno(status); | |
1511 | goto bail; | |
1512 | } | |
1513 | ||
ccd979bd | 1514 | /* change the dirent to point to the correct inode */ |
4a12ca3a MF |
1515 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1516 | old_inode); | |
ccd979bd MF |
1517 | if (status < 0) { |
1518 | mlog_errno(status); | |
1519 | goto bail; | |
1520 | } | |
cc56c33e | 1521 | inode_inc_iversion(new_dir); |
ccd979bd MF |
1522 | |
1523 | if (S_ISDIR(new_inode->i_mode)) | |
198a1ca3 | 1524 | ocfs2_set_links_count(newfe, 0); |
ccd979bd | 1525 | else |
198a1ca3 | 1526 | ocfs2_add_links_count(newfe, -1); |
ec20cec7 | 1527 | ocfs2_journal_dirty(handle, newfe_bh); |
5fb1beb0 | 1528 | if (should_add_orphan) { |
1529 | status = ocfs2_orphan_add(osb, handle, new_inode, | |
1530 | newfe_bh, orphan_name, | |
06ee5c75 | 1531 | &orphan_insert, orphan_dir, false); |
5fb1beb0 | 1532 | if (status < 0) { |
1533 | mlog_errno(status); | |
1534 | goto bail; | |
1535 | } | |
1536 | } | |
ccd979bd MF |
1537 | } else { |
1538 | /* if the name was not found in new_dir, add it now */ | |
1539 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1540 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1541 | new_dir_bh, &target_insert); |
ccd979bd MF |
1542 | } |
1543 | ||
078cd827 | 1544 | old_inode->i_ctime = current_time(old_inode); |
ccd979bd | 1545 | mark_inode_dirty(old_inode); |
480214d7 | 1546 | |
0cf2f763 JB |
1547 | status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), |
1548 | old_inode_bh, | |
13723d00 | 1549 | OCFS2_JOURNAL_ACCESS_WRITE); |
480214d7 SM |
1550 | if (status >= 0) { |
1551 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; | |
1552 | ||
1553 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); | |
1554 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); | |
ec20cec7 | 1555 | ocfs2_journal_dirty(handle, old_inode_bh); |
480214d7 SM |
1556 | } else |
1557 | mlog_errno(status); | |
ccd979bd | 1558 | |
5b6a3a2b MF |
1559 | /* |
1560 | * Now that the name has been added to new_dir, remove the old name. | |
1561 | * | |
1562 | * We don't keep any directory entry context around until now | |
1563 | * because the insert might have changed the type of directory | |
1564 | * we're dealing with. | |
1565 | */ | |
4a12ca3a MF |
1566 | status = ocfs2_find_entry(old_dentry->d_name.name, |
1567 | old_dentry->d_name.len, old_dir, | |
1568 | &old_entry_lookup); | |
807a7907 | 1569 | if (status) { |
1570 | if (!is_journal_aborted(osb->journal->j_journal)) { | |
1571 | ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " | |
1572 | "is not deleted.", | |
1573 | new_dentry->d_name.len, new_dentry->d_name.name, | |
1574 | old_dentry->d_name.len, old_dentry->d_name.name); | |
1575 | } | |
5b6a3a2b | 1576 | goto bail; |
807a7907 | 1577 | } |
5b6a3a2b | 1578 | |
4a12ca3a | 1579 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
ccd979bd MF |
1580 | if (status < 0) { |
1581 | mlog_errno(status); | |
807a7907 | 1582 | if (!is_journal_aborted(osb->journal->j_journal)) { |
1583 | ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " | |
1584 | "is not deleted.", | |
1585 | new_dentry->d_name.len, new_dentry->d_name.name, | |
1586 | old_dentry->d_name.len, old_dentry->d_name.name); | |
1587 | } | |
ccd979bd MF |
1588 | goto bail; |
1589 | } | |
1590 | ||
1591 | if (new_inode) { | |
6d6b77f1 | 1592 | drop_nlink(new_inode); |
078cd827 | 1593 | new_inode->i_ctime = current_time(new_inode); |
ccd979bd | 1594 | } |
078cd827 | 1595 | old_dir->i_ctime = old_dir->i_mtime = current_time(old_dir); |
4a12ca3a MF |
1596 | |
1597 | if (update_dot_dot) { | |
1598 | status = ocfs2_update_entry(old_inode, handle, | |
1599 | &old_inode_dot_dot_res, new_dir); | |
6d6b77f1 | 1600 | drop_nlink(old_dir); |
ccd979bd | 1601 | if (new_inode) { |
6d6b77f1 | 1602 | drop_nlink(new_inode); |
ccd979bd | 1603 | } else { |
d8c76e6f | 1604 | inc_nlink(new_dir); |
ccd979bd MF |
1605 | mark_inode_dirty(new_dir); |
1606 | } | |
1607 | } | |
1608 | mark_inode_dirty(old_dir); | |
592282cf MF |
1609 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
1610 | if (new_inode) { | |
ccd979bd | 1611 | mark_inode_dirty(new_inode); |
592282cf MF |
1612 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
1613 | } | |
ccd979bd | 1614 | |
592282cf MF |
1615 | if (old_dir != new_dir) { |
1616 | /* Keep the same times on both directories.*/ | |
1617 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; | |
1618 | ||
1619 | /* | |
1620 | * This will also pick up the i_nlink change from the | |
1621 | * block above. | |
1622 | */ | |
1623 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1624 | } | |
ccd979bd MF |
1625 | |
1626 | if (old_dir_nlink != old_dir->i_nlink) { | |
1627 | if (!old_dir_bh) { | |
1628 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1629 | "%llu from %d to %d but bh is NULL!\n", |
1630 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1631 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1632 | } else { |
1633 | struct ocfs2_dinode *fe; | |
0cf2f763 JB |
1634 | status = ocfs2_journal_access_di(handle, |
1635 | INODE_CACHE(old_dir), | |
1636 | old_dir_bh, | |
1637 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd | 1638 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
198a1ca3 | 1639 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
ec20cec7 | 1640 | ocfs2_journal_dirty(handle, old_dir_bh); |
ccd979bd MF |
1641 | } |
1642 | } | |
379dfe9d | 1643 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1644 | status = 0; |
1645 | bail: | |
ccd979bd | 1646 | if (handle) |
02dc1af4 | 1647 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1648 | |
5098c27b MF |
1649 | if (orphan_dir) { |
1650 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1651 | ocfs2_inode_unlock(orphan_dir, 1); |
5955102c | 1652 | inode_unlock(orphan_dir); |
5098c27b MF |
1653 | iput(orphan_dir); |
1654 | } | |
1655 | ||
3cb2ec43 JQ |
1656 | if (new_child_locked) |
1657 | ocfs2_inode_unlock(new_inode, 1); | |
1658 | ||
1659 | if (old_child_locked) | |
1660 | ocfs2_inode_unlock(old_inode, 1); | |
1661 | ||
1662 | if (parents_locked) | |
1663 | ocfs2_double_unlock(old_dir, new_dir); | |
1664 | ||
1665 | if (rename_lock) | |
1666 | ocfs2_rename_unlock(osb); | |
1667 | ||
ccd979bd MF |
1668 | if (new_inode) |
1669 | sync_mapping_buffers(old_inode->i_mapping); | |
1670 | ||
72865d92 | 1671 | iput(new_inode); |
4a12ca3a MF |
1672 | |
1673 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1674 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1675 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1676 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1677 | ocfs2_free_dir_lookup_result(&target_insert); | |
1678 | ||
a81cb88b MF |
1679 | brelse(newfe_bh); |
1680 | brelse(old_inode_bh); | |
1681 | brelse(old_dir_bh); | |
1682 | brelse(new_dir_bh); | |
ccd979bd | 1683 | |
c1e8d35e TM |
1684 | if (status) |
1685 | mlog_errno(status); | |
ccd979bd MF |
1686 | |
1687 | return status; | |
1688 | } | |
1689 | ||
1690 | /* | |
1691 | * we expect i_size = strlen(symname). Copy symname into the file | |
1692 | * data, including the null terminator. | |
1693 | */ | |
1694 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1695 | handle_t *handle, |
ccd979bd MF |
1696 | struct inode *inode, |
1697 | const char *symname) | |
1698 | { | |
1699 | struct buffer_head **bhs = NULL; | |
1700 | const char *c; | |
1701 | struct super_block *sb = osb->sb; | |
4f902c37 | 1702 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1703 | int virtual, blocks, status, i, bytes_left; |
1704 | ||
1705 | bytes_left = i_size_read(inode) + 1; | |
1706 | /* we can't trust i_blocks because we're actually going to | |
1707 | * write i_size + 1 bytes. */ | |
1708 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1709 | ||
8990e44a TM |
1710 | trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks, |
1711 | i_size_read(inode), blocks); | |
ccd979bd MF |
1712 | |
1713 | /* Sanity check -- make sure we're going to fit. */ | |
1714 | if (bytes_left > | |
1715 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1716 | status = -EIO; | |
1717 | mlog_errno(status); | |
1718 | goto bail; | |
1719 | } | |
1720 | ||
1721 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1722 | if (!bhs) { | |
1723 | status = -ENOMEM; | |
1724 | mlog_errno(status); | |
1725 | goto bail; | |
1726 | } | |
1727 | ||
49cb8d2d MF |
1728 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1729 | NULL); | |
ccd979bd MF |
1730 | if (status < 0) { |
1731 | mlog_errno(status); | |
1732 | goto bail; | |
1733 | } | |
1734 | ||
1735 | /* links can never be larger than one cluster so we know this | |
1736 | * is all going to be contiguous, but do a sanity check | |
1737 | * anyway. */ | |
1738 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1739 | status = -EIO; | |
1740 | mlog_errno(status); | |
1741 | goto bail; | |
1742 | } | |
1743 | ||
1744 | virtual = 0; | |
1745 | while(bytes_left > 0) { | |
1746 | c = &symname[virtual * sb->s_blocksize]; | |
1747 | ||
1748 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1749 | if (!bhs[virtual]) { | |
1750 | status = -ENOMEM; | |
1751 | mlog_errno(status); | |
1752 | goto bail; | |
1753 | } | |
8cb471e8 JB |
1754 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
1755 | bhs[virtual]); | |
ccd979bd | 1756 | |
0cf2f763 JB |
1757 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
1758 | bhs[virtual], | |
ccd979bd MF |
1759 | OCFS2_JOURNAL_ACCESS_CREATE); |
1760 | if (status < 0) { | |
1761 | mlog_errno(status); | |
1762 | goto bail; | |
1763 | } | |
1764 | ||
1765 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1766 | ||
1767 | memcpy(bhs[virtual]->b_data, c, | |
1768 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1769 | bytes_left); | |
1770 | ||
ec20cec7 | 1771 | ocfs2_journal_dirty(handle, bhs[virtual]); |
ccd979bd MF |
1772 | |
1773 | virtual++; | |
1774 | p_blkno++; | |
1775 | bytes_left -= sb->s_blocksize; | |
1776 | } | |
1777 | ||
1778 | status = 0; | |
1779 | bail: | |
1780 | ||
1781 | if (bhs) { | |
1782 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1783 | brelse(bhs[i]); |
ccd979bd MF |
1784 | kfree(bhs); |
1785 | } | |
1786 | ||
c1e8d35e TM |
1787 | if (status) |
1788 | mlog_errno(status); | |
ccd979bd MF |
1789 | return status; |
1790 | } | |
1791 | ||
549c7297 CB |
1792 | static int ocfs2_symlink(struct user_namespace *mnt_userns, |
1793 | struct inode *dir, | |
ccd979bd MF |
1794 | struct dentry *dentry, |
1795 | const char *symname) | |
1796 | { | |
1797 | int status, l, credits; | |
1798 | u64 newsize; | |
1799 | struct ocfs2_super *osb = NULL; | |
1800 | struct inode *inode = NULL; | |
1801 | struct super_block *sb; | |
1802 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1803 | struct buffer_head *parent_fe_bh = NULL; |
1804 | struct ocfs2_dinode *fe = NULL; | |
1805 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1806 | handle_t *handle = NULL; |
ccd979bd MF |
1807 | struct ocfs2_alloc_context *inode_ac = NULL; |
1808 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1809 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1810 | int want_clusters = 0; | |
1811 | int xattr_credits = 0; | |
1812 | struct ocfs2_security_xattr_info si = { | |
1813 | .enable = 1, | |
1814 | }; | |
a90714c1 | 1815 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1816 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
1817 | sigset_t oldset; |
1818 | int did_block_signals = 0; | |
595297a8 | 1819 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 1820 | |
8990e44a TM |
1821 | trace_ocfs2_symlink_begin(dir, dentry, symname, |
1822 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 1823 | |
9c89fe0a JK |
1824 | status = dquot_initialize(dir); |
1825 | if (status) { | |
1826 | mlog_errno(status); | |
1827 | goto bail; | |
1828 | } | |
907f4554 | 1829 | |
ccd979bd MF |
1830 | sb = dir->i_sb; |
1831 | osb = OCFS2_SB(sb); | |
1832 | ||
1833 | l = strlen(symname) + 1; | |
1834 | ||
1835 | credits = ocfs2_calc_symlink_credits(sb); | |
1836 | ||
ccd979bd | 1837 | /* lock the parent directory */ |
e63aecb6 | 1838 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1839 | if (status < 0) { |
1840 | if (status != -ENOENT) | |
1841 | mlog_errno(status); | |
6d8fc40e | 1842 | return status; |
ccd979bd MF |
1843 | } |
1844 | ||
1845 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
198a1ca3 | 1846 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
1847 | /* can't make a file in a deleted directory. */ |
1848 | status = -ENOENT; | |
1849 | goto bail; | |
1850 | } | |
1851 | ||
1852 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1853 | dentry->d_name.len); | |
1854 | if (status) | |
1855 | goto bail; | |
1856 | ||
1857 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1858 | dentry->d_name.name, | |
4a12ca3a | 1859 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1860 | if (status < 0) { |
1861 | mlog_errno(status); | |
1862 | goto bail; | |
1863 | } | |
1864 | ||
da5cbf2f | 1865 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1866 | if (status < 0) { |
1867 | if (status != -ENOSPC) | |
1868 | mlog_errno(status); | |
1869 | goto bail; | |
1870 | } | |
1871 | ||
f5d36202 | 1872 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
9c89fe0a JK |
1873 | if (IS_ERR(inode)) { |
1874 | status = PTR_ERR(inode); | |
1875 | inode = NULL; | |
f5d36202 TY |
1876 | mlog_errno(status); |
1877 | goto bail; | |
1878 | } | |
1879 | ||
534eaddd | 1880 | /* get security xattr */ |
2a7dba39 | 1881 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
1882 | if (status) { |
1883 | if (status == -EOPNOTSUPP) | |
1884 | si.enable = 0; | |
1885 | else { | |
1886 | mlog_errno(status); | |
1887 | goto bail; | |
1888 | } | |
1889 | } | |
1890 | ||
1891 | /* calculate meta data/clusters for setting security xattr */ | |
1892 | if (si.enable) { | |
1893 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1894 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1895 | if (status < 0) { |
534eaddd | 1896 | mlog_errno(status); |
ccd979bd MF |
1897 | goto bail; |
1898 | } | |
1899 | } | |
1900 | ||
534eaddd TY |
1901 | /* don't reserve bitmap space for fast symlinks. */ |
1902 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1903 | want_clusters += 1; | |
1904 | ||
1905 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1906 | if (status < 0) { | |
1907 | if (status != -ENOSPC) | |
1908 | mlog_errno(status); | |
1909 | goto bail; | |
1910 | } | |
1911 | ||
1912 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1913 | if (IS_ERR(handle)) { |
1914 | status = PTR_ERR(handle); | |
1915 | handle = NULL; | |
1916 | mlog_errno(status); | |
1917 | goto bail; | |
1918 | } | |
1919 | ||
547ba7c8 JB |
1920 | /* Starting to change things, restart is no longer possible. */ |
1921 | ocfs2_block_signals(&oldset); | |
1922 | did_block_signals = 1; | |
1923 | ||
63936dda CH |
1924 | status = dquot_alloc_inode(inode); |
1925 | if (status) | |
a90714c1 | 1926 | goto bail; |
a90714c1 JK |
1927 | did_quota_inode = 1; |
1928 | ||
8990e44a TM |
1929 | trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len, |
1930 | dentry->d_name.name, | |
1931 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
1932 | inode->i_mode); | |
19bd341f TM |
1933 | |
1934 | status = ocfs2_mknod_locked(osb, dir, inode, | |
f5d36202 TY |
1935 | 0, &new_fe_bh, parent_fe_bh, handle, |
1936 | inode_ac); | |
ccd979bd MF |
1937 | if (status < 0) { |
1938 | mlog_errno(status); | |
1939 | goto bail; | |
1940 | } | |
1941 | ||
1942 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1943 | inode->i_rdev = 0; | |
1944 | newsize = l - 1; | |
ea022dfb | 1945 | inode->i_op = &ocfs2_symlink_inode_operations; |
21fc61c7 | 1946 | inode_nohighmem(inode); |
ccd979bd | 1947 | if (l > ocfs2_fast_symlink_chars(sb)) { |
dcd0538f MF |
1948 | u32 offset = 0; |
1949 | ||
5dd4056d CH |
1950 | status = dquot_alloc_space_nodirty(inode, |
1951 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1952 | if (status) | |
a90714c1 | 1953 | goto bail; |
a90714c1 | 1954 | did_quota = 1; |
ea022dfb | 1955 | inode->i_mapping->a_ops = &ocfs2_aops; |
0eb8d47e TM |
1956 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1957 | new_fe_bh, | |
1958 | handle, data_ac, NULL, | |
1959 | NULL); | |
ccd979bd MF |
1960 | if (status < 0) { |
1961 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1962 | mlog(ML_ERROR, |
1963 | "Failed to extend file to %llu\n", | |
1964 | (unsigned long long)newsize); | |
ccd979bd MF |
1965 | mlog_errno(status); |
1966 | status = -ENOSPC; | |
1967 | } | |
1968 | goto bail; | |
1969 | } | |
1970 | i_size_write(inode, newsize); | |
8110b073 | 1971 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd | 1972 | } else { |
ea022dfb | 1973 | inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops; |
ccd979bd MF |
1974 | memcpy((char *) fe->id2.i_symlink, symname, l); |
1975 | i_size_write(inode, newsize); | |
1976 | inode->i_blocks = 0; | |
1977 | } | |
1978 | ||
1979 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1980 | if (status < 0) { | |
1981 | mlog_errno(status); | |
1982 | goto bail; | |
1983 | } | |
1984 | ||
1985 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
1986 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
1987 | symname); | |
1988 | if (status < 0) { | |
1989 | mlog_errno(status); | |
1990 | goto bail; | |
1991 | } | |
1992 | } | |
1993 | ||
534eaddd TY |
1994 | if (si.enable) { |
1995 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
1996 | xattr_ac, data_ac); | |
1997 | if (status < 0) { | |
1998 | mlog_errno(status); | |
1999 | goto bail; | |
2000 | } | |
2001 | } | |
2002 | ||
a9743fcd MF |
2003 | /* |
2004 | * Do this before adding the entry to the directory. We add | |
2005 | * also set d_op after success so that ->d_iput() will cleanup | |
2006 | * the dentry lock even if ocfs2_add_entry() fails below. | |
2007 | */ | |
2008 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); | |
2009 | if (status) { | |
ccd979bd MF |
2010 | mlog_errno(status); |
2011 | goto bail; | |
2012 | } | |
2013 | ||
595297a8 | 2014 | dl = dentry->d_fsdata; |
2015 | ||
a9743fcd MF |
2016 | status = ocfs2_add_entry(handle, dentry, inode, |
2017 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
2018 | &lookup); | |
2019 | if (status < 0) { | |
379dfe9d MF |
2020 | mlog_errno(status); |
2021 | goto bail; | |
2022 | } | |
2023 | ||
ccd979bd | 2024 | insert_inode_hash(inode); |
ccd979bd MF |
2025 | d_instantiate(dentry, inode); |
2026 | bail: | |
a90714c1 | 2027 | if (status < 0 && did_quota) |
5dd4056d | 2028 | dquot_free_space_nodirty(inode, |
a90714c1 JK |
2029 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
2030 | if (status < 0 && did_quota_inode) | |
63936dda | 2031 | dquot_free_inode(inode); |
ccd979bd | 2032 | if (handle) |
02dc1af4 | 2033 | ocfs2_commit_trans(osb, handle); |
6d8fc40e | 2034 | |
e63aecb6 | 2035 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
2036 | if (did_block_signals) |
2037 | ocfs2_unblock_signals(&oldset); | |
6d8fc40e | 2038 | |
a81cb88b MF |
2039 | brelse(new_fe_bh); |
2040 | brelse(parent_fe_bh); | |
534eaddd | 2041 | kfree(si.value); |
4a12ca3a | 2042 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
2043 | if (inode_ac) |
2044 | ocfs2_free_alloc_context(inode_ac); | |
2045 | if (data_ac) | |
2046 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
2047 | if (xattr_ac) |
2048 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 | 2049 | if ((status < 0) && inode) { |
595297a8 | 2050 | if (dl) |
2051 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
2052 | ||
ab41fdc8 | 2053 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
f5d36202 | 2054 | clear_nlink(inode); |
ccd979bd | 2055 | iput(inode); |
f5d36202 | 2056 | } |
ccd979bd | 2057 | |
c1e8d35e TM |
2058 | if (status) |
2059 | mlog_errno(status); | |
ccd979bd MF |
2060 | |
2061 | return status; | |
2062 | } | |
2063 | ||
ccd979bd MF |
2064 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
2065 | { | |
2066 | int status, namelen; | |
2067 | ||
b0697053 MF |
2068 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
2069 | (long long)blkno); | |
ccd979bd MF |
2070 | if (namelen <= 0) { |
2071 | if (namelen) | |
2072 | status = namelen; | |
2073 | else | |
2074 | status = -EINVAL; | |
2075 | mlog_errno(status); | |
2076 | goto bail; | |
2077 | } | |
2078 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
2079 | status = -EINVAL; | |
2080 | mlog_errno(status); | |
2081 | goto bail; | |
2082 | } | |
2083 | ||
8990e44a | 2084 | trace_ocfs2_blkno_stringify(blkno, name, namelen); |
ccd979bd MF |
2085 | |
2086 | status = 0; | |
2087 | bail: | |
c1e8d35e TM |
2088 | if (status < 0) |
2089 | mlog_errno(status); | |
ccd979bd MF |
2090 | return status; |
2091 | } | |
2092 | ||
dd43bcde MF |
2093 | static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb, |
2094 | struct inode **ret_orphan_dir, | |
2095 | struct buffer_head **ret_orphan_dir_bh) | |
ccd979bd | 2096 | { |
5098c27b | 2097 | struct inode *orphan_dir_inode; |
ccd979bd | 2098 | struct buffer_head *orphan_dir_bh = NULL; |
dd43bcde | 2099 | int ret = 0; |
ccd979bd MF |
2100 | |
2101 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2102 | ORPHAN_DIR_SYSTEM_INODE, | |
2103 | osb->slot_num); | |
2104 | if (!orphan_dir_inode) { | |
dd43bcde MF |
2105 | ret = -ENOENT; |
2106 | mlog_errno(ret); | |
2107 | return ret; | |
ccd979bd MF |
2108 | } |
2109 | ||
5955102c | 2110 | inode_lock(orphan_dir_inode); |
5098c27b | 2111 | |
dd43bcde MF |
2112 | ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2113 | if (ret < 0) { | |
5955102c | 2114 | inode_unlock(orphan_dir_inode); |
dd43bcde MF |
2115 | iput(orphan_dir_inode); |
2116 | ||
2117 | mlog_errno(ret); | |
2118 | return ret; | |
ccd979bd MF |
2119 | } |
2120 | ||
dd43bcde MF |
2121 | *ret_orphan_dir = orphan_dir_inode; |
2122 | *ret_orphan_dir_bh = orphan_dir_bh; | |
5098c27b | 2123 | |
dd43bcde MF |
2124 | return 0; |
2125 | } | |
2126 | ||
2127 | static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode, | |
2128 | struct buffer_head *orphan_dir_bh, | |
2129 | u64 blkno, | |
2130 | char *name, | |
06ee5c75 JQ |
2131 | struct ocfs2_dir_lookup_result *lookup, |
2132 | bool dio) | |
dd43bcde MF |
2133 | { |
2134 | int ret; | |
2135 | struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb); | |
06ee5c75 JQ |
2136 | int namelen = dio ? |
2137 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2138 | OCFS2_ORPHAN_NAMELEN; | |
2139 | ||
2140 | if (dio) { | |
2141 | ret = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2142 | OCFS2_DIO_ORPHAN_PREFIX); | |
2143 | if (ret != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2144 | ret = -EINVAL; | |
2145 | mlog_errno(ret); | |
2146 | return ret; | |
2147 | } | |
dd43bcde | 2148 | |
06ee5c75 JQ |
2149 | ret = ocfs2_blkno_stringify(blkno, |
2150 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2151 | } else | |
2152 | ret = ocfs2_blkno_stringify(blkno, name); | |
dd43bcde MF |
2153 | if (ret < 0) { |
2154 | mlog_errno(ret); | |
2155 | return ret; | |
2156 | } | |
2157 | ||
2158 | ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
2159 | orphan_dir_bh, name, | |
06ee5c75 | 2160 | namelen, lookup); |
dd43bcde MF |
2161 | if (ret < 0) { |
2162 | mlog_errno(ret); | |
2163 | return ret; | |
2164 | } | |
2165 | ||
2166 | return 0; | |
2167 | } | |
2168 | ||
2169 | /** | |
2170 | * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for | |
2171 | * insertion of an orphan. | |
2172 | * @osb: ocfs2 file system | |
2173 | * @ret_orphan_dir: Orphan dir inode - returned locked! | |
2174 | * @blkno: Actual block number of the inode to be inserted into orphan dir. | |
2175 | * @lookup: dir lookup result, to be passed back into functions like | |
2176 | * ocfs2_orphan_add | |
2177 | * | |
2178 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2179 | * fields will be populated. | |
2180 | * | |
2181 | * Returns non-zero on failure. | |
2182 | */ | |
2183 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
2184 | struct inode **ret_orphan_dir, | |
2185 | u64 blkno, | |
2186 | char *name, | |
06ee5c75 JQ |
2187 | struct ocfs2_dir_lookup_result *lookup, |
2188 | bool dio) | |
dd43bcde MF |
2189 | { |
2190 | struct inode *orphan_dir_inode = NULL; | |
2191 | struct buffer_head *orphan_dir_bh = NULL; | |
2192 | int ret = 0; | |
2193 | ||
2194 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode, | |
2195 | &orphan_dir_bh); | |
2196 | if (ret < 0) { | |
2197 | mlog_errno(ret); | |
2198 | return ret; | |
2199 | } | |
2200 | ||
2201 | ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh, | |
06ee5c75 | 2202 | blkno, name, lookup, dio); |
dd43bcde MF |
2203 | if (ret < 0) { |
2204 | mlog_errno(ret); | |
2205 | goto out; | |
ccd979bd MF |
2206 | } |
2207 | ||
5098c27b MF |
2208 | *ret_orphan_dir = orphan_dir_inode; |
2209 | ||
dd43bcde MF |
2210 | out: |
2211 | brelse(orphan_dir_bh); | |
2212 | ||
2213 | if (ret) { | |
2214 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2215 | inode_unlock(orphan_dir_inode); |
ccd979bd | 2216 | iput(orphan_dir_inode); |
5098c27b | 2217 | } |
ccd979bd | 2218 | |
c1e8d35e TM |
2219 | if (ret) |
2220 | mlog_errno(ret); | |
dd43bcde | 2221 | return ret; |
ccd979bd MF |
2222 | } |
2223 | ||
2224 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 2225 | handle_t *handle, |
ccd979bd | 2226 | struct inode *inode, |
3939fda4 | 2227 | struct buffer_head *fe_bh, |
ccd979bd | 2228 | char *name, |
4a12ca3a | 2229 | struct ocfs2_dir_lookup_result *lookup, |
06ee5c75 JQ |
2230 | struct inode *orphan_dir_inode, |
2231 | bool dio) | |
ccd979bd | 2232 | { |
ccd979bd MF |
2233 | struct buffer_head *orphan_dir_bh = NULL; |
2234 | int status = 0; | |
2235 | struct ocfs2_dinode *orphan_fe; | |
3939fda4 | 2236 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; |
06ee5c75 JQ |
2237 | int namelen = dio ? |
2238 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2239 | OCFS2_ORPHAN_NAMELEN; | |
ccd979bd | 2240 | |
8990e44a TM |
2241 | trace_ocfs2_orphan_add_begin( |
2242 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 2243 | |
b657c95c | 2244 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
2245 | if (status < 0) { |
2246 | mlog_errno(status); | |
2247 | goto leave; | |
2248 | } | |
2249 | ||
0cf2f763 JB |
2250 | status = ocfs2_journal_access_di(handle, |
2251 | INODE_CACHE(orphan_dir_inode), | |
2252 | orphan_dir_bh, | |
13723d00 | 2253 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2254 | if (status < 0) { |
2255 | mlog_errno(status); | |
2256 | goto leave; | |
2257 | } | |
2258 | ||
ea45466a YL |
2259 | /* |
2260 | * We're going to journal the change of i_flags and i_orphaned_slot. | |
2261 | * It's safe anyway, though some callers may duplicate the journaling. | |
2262 | * Journaling within the func just make the logic look more | |
2263 | * straightforward. | |
2264 | */ | |
2265 | status = ocfs2_journal_access_di(handle, | |
2266 | INODE_CACHE(inode), | |
2267 | fe_bh, | |
2268 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2269 | if (status < 0) { | |
2270 | mlog_errno(status); | |
2271 | goto leave; | |
2272 | } | |
2273 | ||
ccd979bd MF |
2274 | /* we're a cluster, and nlink can change on disk from |
2275 | * underneath us... */ | |
2276 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2277 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2278 | ocfs2_add_links_count(orphan_fe, 1); |
bfe86848 | 2279 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2280 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2281 | |
2282 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
06ee5c75 | 2283 | namelen, inode, |
ccd979bd | 2284 | OCFS2_I(inode)->ip_blkno, |
4a12ca3a | 2285 | orphan_dir_bh, lookup); |
ccd979bd MF |
2286 | if (status < 0) { |
2287 | mlog_errno(status); | |
ea45466a | 2288 | goto rollback; |
3939fda4 TY |
2289 | } |
2290 | ||
06ee5c75 JQ |
2291 | if (dio) { |
2292 | /* Update flag OCFS2_DIO_ORPHANED_FL and record the orphan | |
2293 | * slot. | |
2294 | */ | |
2295 | fe->i_flags |= cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2296 | fe->i_dio_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2297 | } else { | |
2298 | fe->i_flags |= cpu_to_le32(OCFS2_ORPHANED_FL); | |
2299 | OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR; | |
ccd979bd | 2300 | |
06ee5c75 JQ |
2301 | /* Record which orphan dir our inode now resides |
2302 | * in. delete_inode will use this to determine which orphan | |
2303 | * dir to lock. */ | |
2304 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2305 | } | |
ccd979bd | 2306 | |
3939fda4 TY |
2307 | ocfs2_journal_dirty(handle, fe_bh); |
2308 | ||
8990e44a TM |
2309 | trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno, |
2310 | osb->slot_num); | |
ccd979bd | 2311 | |
ea45466a YL |
2312 | rollback: |
2313 | if (status < 0) { | |
2314 | if (S_ISDIR(inode->i_mode)) | |
2315 | ocfs2_add_links_count(orphan_fe, -1); | |
2316 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); | |
2317 | } | |
2318 | ||
ccd979bd | 2319 | leave: |
a81cb88b | 2320 | brelse(orphan_dir_bh); |
ccd979bd | 2321 | |
ccd979bd MF |
2322 | return status; |
2323 | } | |
2324 | ||
2325 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
2326 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 2327 | handle_t *handle, |
ccd979bd MF |
2328 | struct inode *orphan_dir_inode, |
2329 | struct inode *inode, | |
06ee5c75 JQ |
2330 | struct buffer_head *orphan_dir_bh, |
2331 | bool dio) | |
ccd979bd | 2332 | { |
64202a21 | 2333 | char name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1]; |
ccd979bd MF |
2334 | struct ocfs2_dinode *orphan_fe; |
2335 | int status = 0; | |
4a12ca3a | 2336 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd | 2337 | |
06ee5c75 JQ |
2338 | if (dio) { |
2339 | status = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2340 | OCFS2_DIO_ORPHAN_PREFIX); | |
2341 | if (status != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2342 | status = -EINVAL; | |
2343 | mlog_errno(status); | |
2344 | return status; | |
2345 | } | |
2346 | ||
2347 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, | |
2348 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2349 | } else | |
2350 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
ccd979bd MF |
2351 | if (status < 0) { |
2352 | mlog_errno(status); | |
2353 | goto leave; | |
2354 | } | |
2355 | ||
8990e44a TM |
2356 | trace_ocfs2_orphan_del( |
2357 | (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
e38a5739 | 2358 | name, strlen(name)); |
ccd979bd | 2359 | |
074a6c65 JQ |
2360 | status = ocfs2_journal_access_di(handle, |
2361 | INODE_CACHE(orphan_dir_inode), | |
2362 | orphan_dir_bh, | |
2363 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2364 | if (status < 0) { | |
2365 | mlog_errno(status); | |
2366 | goto leave; | |
2367 | } | |
2368 | ||
ccd979bd | 2369 | /* find it's spot in the orphan directory */ |
e38a5739 | 2370 | status = ocfs2_find_entry(name, strlen(name), orphan_dir_inode, |
4a12ca3a MF |
2371 | &lookup); |
2372 | if (status) { | |
ccd979bd MF |
2373 | mlog_errno(status); |
2374 | goto leave; | |
2375 | } | |
2376 | ||
2377 | /* remove it from the orphan directory */ | |
4a12ca3a | 2378 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
2379 | if (status < 0) { |
2380 | mlog_errno(status); | |
2381 | goto leave; | |
2382 | } | |
2383 | ||
ccd979bd MF |
2384 | /* do the i_nlink dance! :) */ |
2385 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2386 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2387 | ocfs2_add_links_count(orphan_fe, -1); |
bfe86848 | 2388 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2389 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2390 | |
2391 | leave: | |
4a12ca3a | 2392 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd | 2393 | |
c1e8d35e TM |
2394 | if (status) |
2395 | mlog_errno(status); | |
ccd979bd MF |
2396 | return status; |
2397 | } | |
2398 | ||
97b8f4a9 | 2399 | /** |
25985edc | 2400 | * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to receive a newly |
97b8f4a9 MF |
2401 | * allocated file. This is different from the typical 'add to orphan dir' |
2402 | * operation in that the inode does not yet exist. This is a problem because | |
2403 | * the orphan dir stringifies the inode block number to come up with it's | |
2404 | * dirent. Obviously if the inode does not yet exist we have a chicken and egg | |
2405 | * problem. This function works around it by calling deeper into the orphan | |
2406 | * and suballoc code than other callers. Use this only by necessity. | |
2407 | * @dir: The directory which this inode will ultimately wind up under - not the | |
2408 | * orphan dir! | |
2409 | * @dir_bh: buffer_head the @dir inode block | |
2410 | * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled | |
2411 | * with the string to be used for orphan dirent. Pass back to the orphan dir | |
2412 | * code. | |
2413 | * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan | |
2414 | * dir code. | |
2415 | * @ret_di_blkno: block number where the new inode will be allocated. | |
2416 | * @orphan_insert: Dir insert context to be passed back into orphan dir code. | |
2417 | * @ret_inode_ac: Inode alloc context to be passed back to the allocator. | |
2418 | * | |
2419 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2420 | * fields will be populated. | |
2421 | * | |
2422 | * Returns non-zero on failure. | |
2423 | */ | |
2424 | static int ocfs2_prep_new_orphaned_file(struct inode *dir, | |
2425 | struct buffer_head *dir_bh, | |
2426 | char *orphan_name, | |
2427 | struct inode **ret_orphan_dir, | |
2428 | u64 *ret_di_blkno, | |
2429 | struct ocfs2_dir_lookup_result *orphan_insert, | |
2430 | struct ocfs2_alloc_context **ret_inode_ac) | |
2431 | { | |
2432 | int ret; | |
2433 | u64 di_blkno; | |
2434 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2435 | struct inode *orphan_dir = NULL; | |
2436 | struct buffer_head *orphan_dir_bh = NULL; | |
2437 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2438 | ||
2439 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh); | |
2440 | if (ret < 0) { | |
2441 | mlog_errno(ret); | |
2442 | return ret; | |
2443 | } | |
2444 | ||
2445 | /* reserve an inode spot */ | |
2446 | ret = ocfs2_reserve_new_inode(osb, &inode_ac); | |
2447 | if (ret < 0) { | |
2448 | if (ret != -ENOSPC) | |
2449 | mlog_errno(ret); | |
2450 | goto out; | |
2451 | } | |
2452 | ||
2453 | ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac, | |
2454 | &di_blkno); | |
2455 | if (ret) { | |
2456 | mlog_errno(ret); | |
2457 | goto out; | |
2458 | } | |
2459 | ||
2460 | ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh, | |
06ee5c75 JQ |
2461 | di_blkno, orphan_name, orphan_insert, |
2462 | false); | |
97b8f4a9 MF |
2463 | if (ret < 0) { |
2464 | mlog_errno(ret); | |
2465 | goto out; | |
2466 | } | |
2467 | ||
2468 | out: | |
2469 | if (ret == 0) { | |
2470 | *ret_orphan_dir = orphan_dir; | |
2471 | *ret_di_blkno = di_blkno; | |
2472 | *ret_inode_ac = inode_ac; | |
2473 | /* | |
2474 | * orphan_name and orphan_insert are already up to | |
2475 | * date via prepare_orphan_dir | |
2476 | */ | |
2477 | } else { | |
2478 | /* Unroll reserve_new_inode* */ | |
2479 | if (inode_ac) | |
2480 | ocfs2_free_alloc_context(inode_ac); | |
2481 | ||
2482 | /* Unroll orphan dir locking */ | |
5955102c | 2483 | inode_unlock(orphan_dir); |
97b8f4a9 MF |
2484 | ocfs2_inode_unlock(orphan_dir, 1); |
2485 | iput(orphan_dir); | |
2486 | } | |
2487 | ||
2488 | brelse(orphan_dir_bh); | |
2489 | ||
7869e590 | 2490 | return ret; |
97b8f4a9 MF |
2491 | } |
2492 | ||
bc13d347 TM |
2493 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
2494 | int mode, | |
2495 | struct inode **new_inode) | |
2496 | { | |
2497 | int status, did_quota_inode = 0; | |
2498 | struct inode *inode = NULL; | |
2499 | struct inode *orphan_dir = NULL; | |
2500 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
bc13d347 TM |
2501 | handle_t *handle = NULL; |
2502 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2503 | struct buffer_head *parent_di_bh = NULL; | |
2504 | struct buffer_head *new_di_bh = NULL; | |
2505 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2506 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
3f649ab7 | 2507 | u64 di_blkno, suballoc_loc; |
97b8f4a9 | 2508 | u16 suballoc_bit; |
bc13d347 TM |
2509 | |
2510 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2511 | if (status < 0) { | |
2512 | if (status != -ENOENT) | |
2513 | mlog_errno(status); | |
2514 | return status; | |
2515 | } | |
2516 | ||
97b8f4a9 MF |
2517 | status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh, |
2518 | orphan_name, &orphan_dir, | |
2519 | &di_blkno, &orphan_insert, &inode_ac); | |
bc13d347 TM |
2520 | if (status < 0) { |
2521 | if (status != -ENOSPC) | |
2522 | mlog_errno(status); | |
2523 | goto leave; | |
2524 | } | |
2525 | ||
2526 | inode = ocfs2_get_init_inode(dir, mode); | |
9c89fe0a JK |
2527 | if (IS_ERR(inode)) { |
2528 | status = PTR_ERR(inode); | |
2529 | inode = NULL; | |
bc13d347 TM |
2530 | mlog_errno(status); |
2531 | goto leave; | |
2532 | } | |
2533 | ||
2534 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); | |
2535 | if (IS_ERR(handle)) { | |
2536 | status = PTR_ERR(handle); | |
2537 | handle = NULL; | |
2538 | mlog_errno(status); | |
2539 | goto leave; | |
2540 | } | |
2541 | ||
63936dda CH |
2542 | status = dquot_alloc_inode(inode); |
2543 | if (status) | |
bc13d347 | 2544 | goto leave; |
bc13d347 TM |
2545 | did_quota_inode = 1; |
2546 | ||
97b8f4a9 MF |
2547 | status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac, |
2548 | &suballoc_loc, | |
2549 | &suballoc_bit, di_blkno); | |
bc13d347 TM |
2550 | if (status < 0) { |
2551 | mlog_errno(status); | |
2552 | goto leave; | |
2553 | } | |
2554 | ||
6d6b77f1 | 2555 | clear_nlink(inode); |
97b8f4a9 MF |
2556 | /* do the real work now. */ |
2557 | status = __ocfs2_mknod_locked(dir, inode, | |
2558 | 0, &new_di_bh, parent_di_bh, handle, | |
2559 | inode_ac, di_blkno, suballoc_loc, | |
2560 | suballoc_bit); | |
bc13d347 TM |
2561 | if (status < 0) { |
2562 | mlog_errno(status); | |
2563 | goto leave; | |
2564 | } | |
2565 | ||
3939fda4 | 2566 | status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name, |
06ee5c75 | 2567 | &orphan_insert, orphan_dir, false); |
bc13d347 TM |
2568 | if (status < 0) { |
2569 | mlog_errno(status); | |
2570 | goto leave; | |
2571 | } | |
2572 | ||
2573 | /* get open lock so that only nodes can't remove it from orphan dir. */ | |
2574 | status = ocfs2_open_lock(inode); | |
2575 | if (status < 0) | |
2576 | mlog_errno(status); | |
2577 | ||
c7d260af | 2578 | insert_inode_hash(inode); |
bc13d347 TM |
2579 | leave: |
2580 | if (status < 0 && did_quota_inode) | |
63936dda | 2581 | dquot_free_inode(inode); |
bc13d347 TM |
2582 | if (handle) |
2583 | ocfs2_commit_trans(osb, handle); | |
2584 | ||
2585 | if (orphan_dir) { | |
2586 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
2587 | ocfs2_inode_unlock(orphan_dir, 1); | |
5955102c | 2588 | inode_unlock(orphan_dir); |
bc13d347 TM |
2589 | iput(orphan_dir); |
2590 | } | |
2591 | ||
bc13d347 TM |
2592 | if ((status < 0) && inode) { |
2593 | clear_nlink(inode); | |
2594 | iput(inode); | |
2595 | } | |
2596 | ||
2597 | if (inode_ac) | |
2598 | ocfs2_free_alloc_context(inode_ac); | |
2599 | ||
2600 | brelse(new_di_bh); | |
2601 | ||
2602 | if (!status) | |
2603 | *new_inode = inode; | |
2604 | ||
2605 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2606 | ||
2607 | ocfs2_inode_unlock(dir, 1); | |
2608 | brelse(parent_di_bh); | |
2609 | return status; | |
2610 | } | |
2611 | ||
06ee5c75 JQ |
2612 | int ocfs2_add_inode_to_orphan(struct ocfs2_super *osb, |
2613 | struct inode *inode) | |
2614 | { | |
2615 | char orphan_name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1]; | |
2616 | struct inode *orphan_dir_inode = NULL; | |
2617 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
2618 | struct buffer_head *di_bh = NULL; | |
2619 | int status = 0; | |
2620 | handle_t *handle = NULL; | |
4813962b | 2621 | struct ocfs2_dinode *di = NULL; |
06ee5c75 JQ |
2622 | |
2623 | status = ocfs2_inode_lock(inode, &di_bh, 1); | |
2624 | if (status < 0) { | |
2625 | mlog_errno(status); | |
2626 | goto bail; | |
2627 | } | |
2628 | ||
4813962b JQ |
2629 | di = (struct ocfs2_dinode *) di_bh->b_data; |
2630 | /* | |
2631 | * Another append dio crashed? | |
512f62ac | 2632 | * If so, manually recover it first. |
4813962b JQ |
2633 | */ |
2634 | if (unlikely(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))) { | |
512f62ac JQ |
2635 | status = ocfs2_truncate_file(inode, di_bh, i_size_read(inode)); |
2636 | if (status < 0) { | |
2637 | if (status != -ENOSPC) | |
2638 | mlog_errno(status); | |
2639 | goto bail_unlock_inode; | |
2640 | } | |
2641 | ||
2642 | status = ocfs2_del_inode_from_orphan(osb, inode, di_bh, 0, 0); | |
2643 | if (status < 0) { | |
2644 | mlog_errno(status); | |
2645 | goto bail_unlock_inode; | |
2646 | } | |
4813962b JQ |
2647 | } |
2648 | ||
06ee5c75 JQ |
2649 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir_inode, |
2650 | OCFS2_I(inode)->ip_blkno, | |
2651 | orphan_name, | |
2652 | &orphan_insert, | |
2653 | true); | |
2654 | if (status < 0) { | |
2655 | mlog_errno(status); | |
2656 | goto bail_unlock_inode; | |
2657 | } | |
2658 | ||
2659 | handle = ocfs2_start_trans(osb, | |
2660 | OCFS2_INODE_ADD_TO_ORPHAN_CREDITS); | |
2661 | if (IS_ERR(handle)) { | |
2662 | status = PTR_ERR(handle); | |
2663 | goto bail_unlock_orphan; | |
2664 | } | |
2665 | ||
2666 | status = ocfs2_orphan_add(osb, handle, inode, di_bh, orphan_name, | |
2667 | &orphan_insert, orphan_dir_inode, true); | |
2668 | if (status) | |
2669 | mlog_errno(status); | |
2670 | ||
2671 | ocfs2_commit_trans(osb, handle); | |
2672 | ||
2673 | bail_unlock_orphan: | |
2674 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2675 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2676 | iput(orphan_dir_inode); |
2677 | ||
2678 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2679 | ||
2680 | bail_unlock_inode: | |
2681 | ocfs2_inode_unlock(inode, 1); | |
2682 | brelse(di_bh); | |
2683 | ||
2684 | bail: | |
2685 | return status; | |
2686 | } | |
2687 | ||
2688 | int ocfs2_del_inode_from_orphan(struct ocfs2_super *osb, | |
cf1776a9 JQ |
2689 | struct inode *inode, struct buffer_head *di_bh, |
2690 | int update_isize, loff_t end) | |
06ee5c75 JQ |
2691 | { |
2692 | struct inode *orphan_dir_inode = NULL; | |
2693 | struct buffer_head *orphan_dir_bh = NULL; | |
cf1776a9 | 2694 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data; |
06ee5c75 JQ |
2695 | handle_t *handle = NULL; |
2696 | int status = 0; | |
2697 | ||
06ee5c75 JQ |
2698 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
2699 | ORPHAN_DIR_SYSTEM_INODE, | |
2700 | le16_to_cpu(di->i_dio_orphaned_slot)); | |
2701 | if (!orphan_dir_inode) { | |
2702 | status = -ENOENT; | |
2703 | mlog_errno(status); | |
cf1776a9 | 2704 | goto bail; |
06ee5c75 JQ |
2705 | } |
2706 | ||
5955102c | 2707 | inode_lock(orphan_dir_inode); |
06ee5c75 JQ |
2708 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2709 | if (status < 0) { | |
5955102c | 2710 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2711 | iput(orphan_dir_inode); |
2712 | mlog_errno(status); | |
cf1776a9 | 2713 | goto bail; |
06ee5c75 JQ |
2714 | } |
2715 | ||
2716 | handle = ocfs2_start_trans(osb, | |
2717 | OCFS2_INODE_DEL_FROM_ORPHAN_CREDITS); | |
2718 | if (IS_ERR(handle)) { | |
2719 | status = PTR_ERR(handle); | |
2720 | goto bail_unlock_orphan; | |
2721 | } | |
2722 | ||
2723 | BUG_ON(!(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))); | |
2724 | ||
2725 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, | |
2726 | inode, orphan_dir_bh, true); | |
2727 | if (status < 0) { | |
2728 | mlog_errno(status); | |
2729 | goto bail_commit; | |
2730 | } | |
2731 | ||
2732 | status = ocfs2_journal_access_di(handle, | |
2733 | INODE_CACHE(inode), | |
2734 | di_bh, | |
2735 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2736 | if (status < 0) { | |
2737 | mlog_errno(status); | |
2738 | goto bail_commit; | |
2739 | } | |
2740 | ||
2741 | di->i_flags &= ~cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2742 | di->i_dio_orphaned_slot = 0; | |
2743 | ||
2744 | if (update_isize) { | |
2745 | status = ocfs2_set_inode_size(handle, inode, di_bh, end); | |
2746 | if (status) | |
2747 | mlog_errno(status); | |
2748 | } else | |
2749 | ocfs2_journal_dirty(handle, di_bh); | |
2750 | ||
2751 | bail_commit: | |
2752 | ocfs2_commit_trans(osb, handle); | |
2753 | ||
2754 | bail_unlock_orphan: | |
2755 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2756 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2757 | brelse(orphan_dir_bh); |
2758 | iput(orphan_dir_inode); | |
2759 | ||
06ee5c75 JQ |
2760 | bail: |
2761 | return status; | |
2762 | } | |
2763 | ||
bc13d347 TM |
2764 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, |
2765 | struct inode *inode, | |
2766 | struct dentry *dentry) | |
2767 | { | |
2768 | int status = 0; | |
2769 | struct buffer_head *parent_di_bh = NULL; | |
2770 | handle_t *handle = NULL; | |
2771 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2772 | struct ocfs2_dinode *dir_di, *di; | |
2773 | struct inode *orphan_dir_inode = NULL; | |
2774 | struct buffer_head *orphan_dir_bh = NULL; | |
2775 | struct buffer_head *di_bh = NULL; | |
2776 | struct ocfs2_dir_lookup_result lookup = { NULL, }; | |
2777 | ||
8990e44a TM |
2778 | trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry, |
2779 | dentry->d_name.len, dentry->d_name.name, | |
2780 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
2781 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
bc13d347 TM |
2782 | |
2783 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2784 | if (status < 0) { | |
2785 | if (status != -ENOENT) | |
2786 | mlog_errno(status); | |
2787 | return status; | |
2788 | } | |
2789 | ||
2790 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; | |
2791 | if (!dir_di->i_links_count) { | |
2792 | /* can't make a file in a deleted directory. */ | |
2793 | status = -ENOENT; | |
2794 | goto leave; | |
2795 | } | |
2796 | ||
2797 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
2798 | dentry->d_name.len); | |
2799 | if (status) | |
2800 | goto leave; | |
2801 | ||
2802 | /* get a spot inside the dir. */ | |
2803 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, | |
2804 | dentry->d_name.name, | |
2805 | dentry->d_name.len, &lookup); | |
2806 | if (status < 0) { | |
2807 | mlog_errno(status); | |
2808 | goto leave; | |
2809 | } | |
2810 | ||
2811 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2812 | ORPHAN_DIR_SYSTEM_INODE, | |
2813 | osb->slot_num); | |
2814 | if (!orphan_dir_inode) { | |
62f8b1f0 | 2815 | status = -ENOENT; |
bc13d347 TM |
2816 | mlog_errno(status); |
2817 | goto leave; | |
2818 | } | |
2819 | ||
5955102c | 2820 | inode_lock(orphan_dir_inode); |
bc13d347 TM |
2821 | |
2822 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2823 | if (status < 0) { | |
2824 | mlog_errno(status); | |
5955102c | 2825 | inode_unlock(orphan_dir_inode); |
bc13d347 TM |
2826 | iput(orphan_dir_inode); |
2827 | goto leave; | |
2828 | } | |
2829 | ||
2830 | status = ocfs2_read_inode_block(inode, &di_bh); | |
2831 | if (status < 0) { | |
2832 | mlog_errno(status); | |
2833 | goto orphan_unlock; | |
2834 | } | |
2835 | ||
2836 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); | |
2837 | if (IS_ERR(handle)) { | |
2838 | status = PTR_ERR(handle); | |
2839 | handle = NULL; | |
2840 | mlog_errno(status); | |
2841 | goto orphan_unlock; | |
2842 | } | |
2843 | ||
2844 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), | |
2845 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2846 | if (status < 0) { | |
2847 | mlog_errno(status); | |
2848 | goto out_commit; | |
2849 | } | |
2850 | ||
2851 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
06ee5c75 | 2852 | orphan_dir_bh, false); |
bc13d347 TM |
2853 | if (status < 0) { |
2854 | mlog_errno(status); | |
2855 | goto out_commit; | |
2856 | } | |
2857 | ||
2858 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
13eb9887 | 2859 | di->i_flags &= ~cpu_to_le32(OCFS2_ORPHANED_FL); |
bc13d347 | 2860 | di->i_orphaned_slot = 0; |
bfe86848 | 2861 | set_nlink(inode, 1); |
10cf1a02 | 2862 | ocfs2_set_links_count(di, inode->i_nlink); |
6fdb702d | 2863 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
bc13d347 TM |
2864 | ocfs2_journal_dirty(handle, di_bh); |
2865 | ||
2866 | status = ocfs2_add_entry(handle, dentry, inode, | |
2867 | OCFS2_I(inode)->ip_blkno, parent_di_bh, | |
2868 | &lookup); | |
2869 | if (status < 0) { | |
2870 | mlog_errno(status); | |
2871 | goto out_commit; | |
2872 | } | |
2873 | ||
2874 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
2875 | OCFS2_I(dir)->ip_blkno); | |
2876 | if (status) { | |
2877 | mlog_errno(status); | |
2878 | goto out_commit; | |
2879 | } | |
2880 | ||
bc13d347 TM |
2881 | d_instantiate(dentry, inode); |
2882 | status = 0; | |
2883 | out_commit: | |
2884 | ocfs2_commit_trans(osb, handle); | |
2885 | orphan_unlock: | |
2886 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2887 | inode_unlock(orphan_dir_inode); |
bc13d347 TM |
2888 | iput(orphan_dir_inode); |
2889 | leave: | |
2890 | ||
2891 | ocfs2_inode_unlock(dir, 1); | |
2892 | ||
2893 | brelse(di_bh); | |
2894 | brelse(parent_di_bh); | |
2895 | brelse(orphan_dir_bh); | |
2896 | ||
2897 | ocfs2_free_dir_lookup_result(&lookup); | |
2898 | ||
c1e8d35e TM |
2899 | if (status) |
2900 | mlog_errno(status); | |
bc13d347 TM |
2901 | |
2902 | return status; | |
2903 | } | |
2904 | ||
92e1d5be | 2905 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2906 | .create = ocfs2_create, |
2907 | .lookup = ocfs2_lookup, | |
2908 | .link = ocfs2_link, | |
2909 | .unlink = ocfs2_unlink, | |
2910 | .rmdir = ocfs2_unlink, | |
2911 | .symlink = ocfs2_symlink, | |
2912 | .mkdir = ocfs2_mkdir, | |
2913 | .mknod = ocfs2_mknod, | |
2914 | .rename = ocfs2_rename, | |
2915 | .setattr = ocfs2_setattr, | |
2916 | .getattr = ocfs2_getattr, | |
d38eb8db | 2917 | .permission = ocfs2_permission, |
cf1d6c76 | 2918 | .listxattr = ocfs2_listxattr, |
55f4946e | 2919 | .fiemap = ocfs2_fiemap, |
4e34e719 | 2920 | .get_acl = ocfs2_iop_get_acl, |
702e5bc6 | 2921 | .set_acl = ocfs2_iop_set_acl, |
2b5f52c5 MS |
2922 | .fileattr_get = ocfs2_fileattr_get, |
2923 | .fileattr_set = ocfs2_fileattr_set, | |
ccd979bd | 2924 | }; |