Commit | Line | Data |
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328970de | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
fa60ce2c | 2 | /* |
ccd979bd MF |
3 | * namei.c |
4 | * | |
5 | * Create and rename file, directory, symlinks | |
6 | * | |
7 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
8 | * | |
9 | * Portions of this code from linux/fs/ext3/dir.c | |
10 | * | |
11 | * Copyright (C) 1992, 1993, 1994, 1995 | |
12 | * Remy Card (card@masi.ibp.fr) | |
13 | * Laboratoire MASI - Institut Blaise pascal | |
14 | * Universite Pierre et Marie Curie (Paris VI) | |
15 | * | |
16 | * from | |
17 | * | |
18 | * linux/fs/minix/dir.c | |
19 | * | |
20 | * Copyright (C) 1991, 1992 Linux Torvalds | |
ccd979bd MF |
21 | */ |
22 | ||
23 | #include <linux/fs.h> | |
24 | #include <linux/types.h> | |
25 | #include <linux/slab.h> | |
26 | #include <linux/highmem.h> | |
a90714c1 | 27 | #include <linux/quotaops.h> |
cc56c33e | 28 | #include <linux/iversion.h> |
ccd979bd | 29 | |
ccd979bd MF |
30 | #include <cluster/masklog.h> |
31 | ||
32 | #include "ocfs2.h" | |
33 | ||
34 | #include "alloc.h" | |
35 | #include "dcache.h" | |
36 | #include "dir.h" | |
37 | #include "dlmglue.h" | |
38 | #include "extent_map.h" | |
39 | #include "file.h" | |
40 | #include "inode.h" | |
41 | #include "journal.h" | |
42 | #include "namei.h" | |
43 | #include "suballoc.h" | |
aa958874 | 44 | #include "super.h" |
ccd979bd MF |
45 | #include "symlink.h" |
46 | #include "sysfile.h" | |
47 | #include "uptodate.h" | |
cf1d6c76 | 48 | #include "xattr.h" |
89c38bd0 | 49 | #include "acl.h" |
8990e44a | 50 | #include "ocfs2_trace.h" |
2b5f52c5 | 51 | #include "ioctl.h" |
ccd979bd MF |
52 | |
53 | #include "buffer_head_io.h" | |
54 | ||
ccd979bd MF |
55 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
56 | struct inode *dir, | |
f5d36202 | 57 | struct inode *inode, |
ccd979bd MF |
58 | dev_t dev, |
59 | struct buffer_head **new_fe_bh, | |
60 | struct buffer_head *parent_fe_bh, | |
1fabe148 | 61 | handle_t *handle, |
ccd979bd MF |
62 | struct ocfs2_alloc_context *inode_ac); |
63 | ||
ccd979bd | 64 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, |
5098c27b | 65 | struct inode **ret_orphan_dir, |
19bd341f | 66 | u64 blkno, |
ccd979bd | 67 | char *name, |
06ee5c75 JQ |
68 | struct ocfs2_dir_lookup_result *lookup, |
69 | bool dio); | |
ccd979bd MF |
70 | |
71 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 72 | handle_t *handle, |
ccd979bd | 73 | struct inode *inode, |
3939fda4 | 74 | struct buffer_head *fe_bh, |
ccd979bd | 75 | char *name, |
4a12ca3a | 76 | struct ocfs2_dir_lookup_result *lookup, |
06ee5c75 JQ |
77 | struct inode *orphan_dir_inode, |
78 | bool dio); | |
ccd979bd MF |
79 | |
80 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 81 | handle_t *handle, |
ccd979bd MF |
82 | struct inode *inode, |
83 | const char *symname); | |
84 | ||
53dc20b9 X |
85 | static int ocfs2_double_lock(struct ocfs2_super *osb, |
86 | struct buffer_head **bh1, | |
87 | struct inode *inode1, | |
88 | struct buffer_head **bh2, | |
89 | struct inode *inode2, | |
90 | int rename); | |
91 | ||
92 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2); | |
ccd979bd MF |
93 | /* An orphan dir name is an 8 byte value, printed as a hex string */ |
94 | #define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64))) | |
95 | ||
96 | static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry, | |
00cd8dd3 | 97 | unsigned int flags) |
ccd979bd MF |
98 | { |
99 | int status; | |
100 | u64 blkno; | |
ccd979bd MF |
101 | struct inode *inode = NULL; |
102 | struct dentry *ret; | |
ccd979bd MF |
103 | struct ocfs2_inode_info *oi; |
104 | ||
8990e44a TM |
105 | trace_ocfs2_lookup(dir, dentry, dentry->d_name.len, |
106 | dentry->d_name.name, | |
107 | (unsigned long long)OCFS2_I(dir)->ip_blkno, 0); | |
ccd979bd MF |
108 | |
109 | if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) { | |
110 | ret = ERR_PTR(-ENAMETOOLONG); | |
111 | goto bail; | |
112 | } | |
113 | ||
cb25797d | 114 | status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT); |
ccd979bd MF |
115 | if (status < 0) { |
116 | if (status != -ENOENT) | |
117 | mlog_errno(status); | |
118 | ret = ERR_PTR(status); | |
119 | goto bail; | |
120 | } | |
121 | ||
be94d117 MF |
122 | status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name, |
123 | dentry->d_name.len, &blkno); | |
ccd979bd MF |
124 | if (status < 0) |
125 | goto bail_add; | |
126 | ||
5fa0613e | 127 | inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0); |
ccd979bd | 128 | if (IS_ERR(inode)) { |
ccd979bd MF |
129 | ret = ERR_PTR(-EACCES); |
130 | goto bail_unlock; | |
131 | } | |
132 | ||
133 | oi = OCFS2_I(inode); | |
134 | /* Clear any orphaned state... If we were able to look up the | |
135 | * inode from a directory, it certainly can't be orphaned. We | |
136 | * might have the bad state from a node which intended to | |
137 | * orphan this inode but crashed before it could commit the | |
138 | * unlink. */ | |
139 | spin_lock(&oi->ip_lock); | |
140 | oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED; | |
ccd979bd MF |
141 | spin_unlock(&oi->ip_lock); |
142 | ||
143 | bail_add: | |
ccd979bd MF |
144 | ret = d_splice_alias(inode, dentry); |
145 | ||
379dfe9d MF |
146 | if (inode) { |
147 | /* | |
148 | * If d_splice_alias() finds a DCACHE_DISCONNECTED | |
149 | * dentry, it will d_move() it on top of ourse. The | |
150 | * return value will indicate this however, so in | |
151 | * those cases, we switch them around for the locking | |
152 | * code. | |
153 | * | |
154 | * NOTE: This dentry already has ->d_op set from | |
155 | * ocfs2_get_parent() and ocfs2_get_dentry() | |
156 | */ | |
d3556bab | 157 | if (!IS_ERR_OR_NULL(ret)) |
379dfe9d MF |
158 | dentry = ret; |
159 | ||
160 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
0027dd5b | 161 | OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
162 | if (status) { |
163 | mlog_errno(status); | |
164 | ret = ERR_PTR(status); | |
165 | goto bail_unlock; | |
166 | } | |
5e98d492 GR |
167 | } else |
168 | ocfs2_dentry_attach_gen(dentry); | |
379dfe9d | 169 | |
ccd979bd MF |
170 | bail_unlock: |
171 | /* Don't drop the cluster lock until *after* the d_add -- | |
172 | * unlink on another node will message us to remove that | |
173 | * dentry under this lock so otherwise we can race this with | |
34d024f8 | 174 | * the downconvert thread and have a stale dentry. */ |
e63aecb6 | 175 | ocfs2_inode_unlock(dir, 0); |
ccd979bd MF |
176 | |
177 | bail: | |
ccd979bd | 178 | |
8990e44a | 179 | trace_ocfs2_lookup_ret(ret); |
ccd979bd MF |
180 | |
181 | return ret; | |
182 | } | |
183 | ||
67697cbd | 184 | static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode) |
f5d36202 TY |
185 | { |
186 | struct inode *inode; | |
9c89fe0a | 187 | int status; |
f5d36202 TY |
188 | |
189 | inode = new_inode(dir->i_sb); | |
190 | if (!inode) { | |
191 | mlog(ML_ERROR, "new_inode failed!\n"); | |
9c89fe0a | 192 | return ERR_PTR(-ENOMEM); |
f5d36202 TY |
193 | } |
194 | ||
195 | /* populate as many fields early on as possible - many of | |
196 | * these are used by the support functions here and in | |
197 | * callers. */ | |
198 | if (S_ISDIR(mode)) | |
bfe86848 | 199 | set_nlink(inode, 2); |
9452e93e | 200 | mode = mode_strip_sgid(&nop_mnt_idmap, dir, mode); |
f2d40141 | 201 | inode_init_owner(&nop_mnt_idmap, inode, dir, mode); |
9c89fe0a JK |
202 | status = dquot_initialize(inode); |
203 | if (status) | |
204 | return ERR_PTR(status); | |
205 | ||
f5d36202 TY |
206 | return inode; |
207 | } | |
208 | ||
595297a8 | 209 | static void ocfs2_cleanup_add_entry_failure(struct ocfs2_super *osb, |
210 | struct dentry *dentry, struct inode *inode) | |
211 | { | |
212 | struct ocfs2_dentry_lock *dl = dentry->d_fsdata; | |
213 | ||
214 | ocfs2_simple_drop_lockres(osb, &dl->dl_lockres); | |
215 | ocfs2_lock_res_free(&dl->dl_lockres); | |
216 | BUG_ON(dl->dl_count != 1); | |
217 | spin_lock(&dentry_attach_lock); | |
218 | dentry->d_fsdata = NULL; | |
219 | spin_unlock(&dentry_attach_lock); | |
220 | kfree(dl); | |
221 | iput(inode); | |
222 | } | |
223 | ||
5ebb29be | 224 | static int ocfs2_mknod(struct mnt_idmap *idmap, |
549c7297 | 225 | struct inode *dir, |
ccd979bd | 226 | struct dentry *dentry, |
1a67aafb | 227 | umode_t mode, |
ccd979bd MF |
228 | dev_t dev) |
229 | { | |
230 | int status = 0; | |
231 | struct buffer_head *parent_fe_bh = NULL; | |
1fabe148 | 232 | handle_t *handle = NULL; |
ccd979bd MF |
233 | struct ocfs2_super *osb; |
234 | struct ocfs2_dinode *dirfe; | |
28f4821b | 235 | struct ocfs2_dinode *fe = NULL; |
ccd979bd | 236 | struct buffer_head *new_fe_bh = NULL; |
ccd979bd MF |
237 | struct inode *inode = NULL; |
238 | struct ocfs2_alloc_context *inode_ac = NULL; | |
239 | struct ocfs2_alloc_context *data_ac = NULL; | |
9b7895ef | 240 | struct ocfs2_alloc_context *meta_ac = NULL; |
534eaddd | 241 | int want_clusters = 0; |
9b7895ef | 242 | int want_meta = 0; |
534eaddd TY |
243 | int xattr_credits = 0; |
244 | struct ocfs2_security_xattr_info si = { | |
de3004c8 | 245 | .name = NULL, |
534eaddd TY |
246 | .enable = 1, |
247 | }; | |
a90714c1 | 248 | int did_quota_inode = 0; |
4a12ca3a | 249 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
250 | sigset_t oldset; |
251 | int did_block_signals = 0; | |
595297a8 | 252 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 253 | |
8990e44a TM |
254 | trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
255 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
256 | (unsigned long)dev, mode); | |
ccd979bd | 257 | |
9c89fe0a JK |
258 | status = dquot_initialize(dir); |
259 | if (status) { | |
260 | mlog_errno(status); | |
261 | return status; | |
262 | } | |
907f4554 | 263 | |
ccd979bd MF |
264 | /* get our super block */ |
265 | osb = OCFS2_SB(dir->i_sb); | |
266 | ||
e63aecb6 | 267 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
e3a82138 MF |
268 | if (status < 0) { |
269 | if (status != -ENOENT) | |
270 | mlog_errno(status); | |
271 | return status; | |
272 | } | |
273 | ||
198a1ca3 | 274 | if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) { |
a663e305 MF |
275 | status = -EMLINK; |
276 | goto leave; | |
277 | } | |
278 | ||
ccd979bd | 279 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
198a1ca3 | 280 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
281 | /* can't make a file in a deleted directory. */ |
282 | status = -ENOENT; | |
283 | goto leave; | |
284 | } | |
285 | ||
286 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
287 | dentry->d_name.len); | |
288 | if (status) | |
289 | goto leave; | |
290 | ||
291 | /* get a spot inside the dir. */ | |
292 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
293 | dentry->d_name.name, | |
4a12ca3a | 294 | dentry->d_name.len, &lookup); |
ccd979bd MF |
295 | if (status < 0) { |
296 | mlog_errno(status); | |
297 | goto leave; | |
298 | } | |
299 | ||
300 | /* reserve an inode spot */ | |
da5cbf2f | 301 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
302 | if (status < 0) { |
303 | if (status != -ENOSPC) | |
304 | mlog_errno(status); | |
305 | goto leave; | |
306 | } | |
307 | ||
f5d36202 | 308 | inode = ocfs2_get_init_inode(dir, mode); |
9c89fe0a JK |
309 | if (IS_ERR(inode)) { |
310 | status = PTR_ERR(inode); | |
311 | inode = NULL; | |
f5d36202 TY |
312 | mlog_errno(status); |
313 | goto leave; | |
314 | } | |
315 | ||
534eaddd | 316 | /* get security xattr */ |
2a7dba39 | 317 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
318 | if (status) { |
319 | if (status == -EOPNOTSUPP) | |
320 | si.enable = 0; | |
321 | else { | |
322 | mlog_errno(status); | |
323 | goto leave; | |
324 | } | |
325 | } | |
326 | ||
89c38bd0 TY |
327 | /* calculate meta data/clusters for setting security and acl xattr */ |
328 | status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode, | |
9b7895ef MF |
329 | &si, &want_clusters, |
330 | &xattr_credits, &want_meta); | |
89c38bd0 TY |
331 | if (status < 0) { |
332 | mlog_errno(status); | |
333 | goto leave; | |
ccd979bd MF |
334 | } |
335 | ||
534eaddd | 336 | /* Reserve a cluster if creating an extent based directory. */ |
9b7895ef | 337 | if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) { |
534eaddd TY |
338 | want_clusters += 1; |
339 | ||
9b7895ef | 340 | /* Dir indexing requires extra space as well */ |
4ed8a6bb | 341 | if (ocfs2_supports_indexed_dirs(osb)) |
9b7895ef | 342 | want_meta++; |
9b7895ef MF |
343 | } |
344 | ||
345 | status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac); | |
346 | if (status < 0) { | |
347 | if (status != -ENOSPC) | |
348 | mlog_errno(status); | |
349 | goto leave; | |
350 | } | |
351 | ||
534eaddd TY |
352 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); |
353 | if (status < 0) { | |
354 | if (status != -ENOSPC) | |
355 | mlog_errno(status); | |
356 | goto leave; | |
357 | } | |
358 | ||
9b7895ef MF |
359 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, |
360 | S_ISDIR(mode), | |
361 | xattr_credits)); | |
ccd979bd MF |
362 | if (IS_ERR(handle)) { |
363 | status = PTR_ERR(handle); | |
364 | handle = NULL; | |
365 | mlog_errno(status); | |
366 | goto leave; | |
367 | } | |
368 | ||
547ba7c8 JB |
369 | /* Starting to change things, restart is no longer possible. */ |
370 | ocfs2_block_signals(&oldset); | |
371 | did_block_signals = 1; | |
372 | ||
63936dda CH |
373 | status = dquot_alloc_inode(inode); |
374 | if (status) | |
a90714c1 | 375 | goto leave; |
a90714c1 JK |
376 | did_quota_inode = 1; |
377 | ||
ccd979bd | 378 | /* do the real work now. */ |
19bd341f | 379 | status = ocfs2_mknod_locked(osb, dir, inode, dev, |
ccd979bd | 380 | &new_fe_bh, parent_fe_bh, handle, |
f5d36202 | 381 | inode_ac); |
ccd979bd MF |
382 | if (status < 0) { |
383 | mlog_errno(status); | |
384 | goto leave; | |
385 | } | |
386 | ||
28f4821b | 387 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; |
ccd979bd MF |
388 | if (S_ISDIR(mode)) { |
389 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, | |
9b7895ef | 390 | new_fe_bh, data_ac, meta_ac); |
ccd979bd MF |
391 | if (status < 0) { |
392 | mlog_errno(status); | |
393 | goto leave; | |
394 | } | |
395 | ||
0cf2f763 JB |
396 | status = ocfs2_journal_access_di(handle, INODE_CACHE(dir), |
397 | parent_fe_bh, | |
13723d00 | 398 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
399 | if (status < 0) { |
400 | mlog_errno(status); | |
401 | goto leave; | |
402 | } | |
198a1ca3 | 403 | ocfs2_add_links_count(dirfe, 1); |
ec20cec7 | 404 | ocfs2_journal_dirty(handle, parent_fe_bh); |
d8c76e6f | 405 | inc_nlink(dir); |
ccd979bd MF |
406 | } |
407 | ||
c25a1e06 JB |
408 | status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh, |
409 | meta_ac, data_ac); | |
702e5bc6 | 410 | |
89c38bd0 TY |
411 | if (status < 0) { |
412 | mlog_errno(status); | |
0434c9f4 | 413 | goto roll_back; |
89c38bd0 TY |
414 | } |
415 | ||
534eaddd TY |
416 | if (si.enable) { |
417 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
9b7895ef | 418 | meta_ac, data_ac); |
534eaddd TY |
419 | if (status < 0) { |
420 | mlog_errno(status); | |
0434c9f4 | 421 | goto roll_back; |
534eaddd TY |
422 | } |
423 | } | |
424 | ||
a9743fcd MF |
425 | /* |
426 | * Do this before adding the entry to the directory. We add | |
427 | * also set d_op after success so that ->d_iput() will cleanup | |
428 | * the dentry lock even if ocfs2_add_entry() fails below. | |
429 | */ | |
430 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
431 | OCFS2_I(dir)->ip_blkno); | |
432 | if (status) { | |
ccd979bd | 433 | mlog_errno(status); |
0434c9f4 | 434 | goto roll_back; |
ccd979bd MF |
435 | } |
436 | ||
595297a8 | 437 | dl = dentry->d_fsdata; |
438 | ||
a9743fcd MF |
439 | status = ocfs2_add_entry(handle, dentry, inode, |
440 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, | |
441 | &lookup); | |
442 | if (status < 0) { | |
379dfe9d | 443 | mlog_errno(status); |
0434c9f4 | 444 | goto roll_back; |
379dfe9d MF |
445 | } |
446 | ||
ccd979bd | 447 | insert_inode_hash(inode); |
ccd979bd MF |
448 | d_instantiate(dentry, inode); |
449 | status = 0; | |
0434c9f4 | 450 | |
451 | roll_back: | |
452 | if (status < 0 && S_ISDIR(mode)) { | |
453 | ocfs2_add_links_count(dirfe, -1); | |
454 | drop_nlink(dir); | |
455 | } | |
456 | ||
ccd979bd | 457 | leave: |
a90714c1 | 458 | if (status < 0 && did_quota_inode) |
63936dda | 459 | dquot_free_inode(inode); |
28f4821b JQ |
460 | if (handle) { |
461 | if (status < 0 && fe) | |
462 | ocfs2_set_links_count(fe, 0); | |
02dc1af4 | 463 | ocfs2_commit_trans(osb, handle); |
28f4821b | 464 | } |
ccd979bd | 465 | |
e63aecb6 | 466 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
467 | if (did_block_signals) |
468 | ocfs2_unblock_signals(&oldset); | |
e3a82138 | 469 | |
a81cb88b | 470 | brelse(new_fe_bh); |
a81cb88b | 471 | brelse(parent_fe_bh); |
534eaddd | 472 | kfree(si.value); |
ccd979bd | 473 | |
4a12ca3a MF |
474 | ocfs2_free_dir_lookup_result(&lookup); |
475 | ||
ccd979bd MF |
476 | if (inode_ac) |
477 | ocfs2_free_alloc_context(inode_ac); | |
478 | ||
479 | if (data_ac) | |
480 | ocfs2_free_alloc_context(data_ac); | |
481 | ||
9b7895ef MF |
482 | if (meta_ac) |
483 | ocfs2_free_alloc_context(meta_ac); | |
534eaddd | 484 | |
062d3403 | 485 | /* |
137cebf9 | 486 | * We should call iput after the i_rwsem of the bitmap been |
062d3403 LD |
487 | * unlocked in ocfs2_free_alloc_context, or the |
488 | * ocfs2_delete_inode will mutex_lock again. | |
489 | */ | |
490 | if ((status < 0) && inode) { | |
595297a8 | 491 | if (dl) |
492 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
493 | ||
062d3403 LD |
494 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
495 | clear_nlink(inode); | |
496 | iput(inode); | |
497 | } | |
498 | ||
c1e8d35e TM |
499 | if (status) |
500 | mlog_errno(status); | |
ccd979bd MF |
501 | |
502 | return status; | |
503 | } | |
504 | ||
021960ca MF |
505 | static int __ocfs2_mknod_locked(struct inode *dir, |
506 | struct inode *inode, | |
507 | dev_t dev, | |
508 | struct buffer_head **new_fe_bh, | |
509 | struct buffer_head *parent_fe_bh, | |
510 | handle_t *handle, | |
511 | struct ocfs2_alloc_context *inode_ac, | |
512 | u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit) | |
ccd979bd MF |
513 | { |
514 | int status = 0; | |
021960ca | 515 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
ccd979bd MF |
516 | struct ocfs2_dinode *fe = NULL; |
517 | struct ocfs2_extent_list *fel; | |
9b7895ef | 518 | u16 feat; |
2931cdcb | 519 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
c62c38f6 | 520 | struct timespec64 ts; |
ccd979bd | 521 | |
ccd979bd | 522 | *new_fe_bh = NULL; |
ccd979bd | 523 | |
ccd979bd MF |
524 | /* populate as many fields early on as possible - many of |
525 | * these are used by the support functions here and in | |
526 | * callers. */ | |
527 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); | |
d324cd4c | 528 | oi->ip_blkno = fe_blkno; |
ccd979bd MF |
529 | spin_lock(&osb->osb_lock); |
530 | inode->i_generation = osb->s_next_generation++; | |
531 | spin_unlock(&osb->osb_lock); | |
532 | ||
533 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); | |
534 | if (!*new_fe_bh) { | |
7391a294 | 535 | status = -ENOMEM; |
ccd979bd MF |
536 | mlog_errno(status); |
537 | goto leave; | |
538 | } | |
8cb471e8 | 539 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
ccd979bd | 540 | |
0cf2f763 JB |
541 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
542 | *new_fe_bh, | |
13723d00 | 543 | OCFS2_JOURNAL_ACCESS_CREATE); |
ccd979bd MF |
544 | if (status < 0) { |
545 | mlog_errno(status); | |
546 | goto leave; | |
547 | } | |
548 | ||
549 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; | |
550 | memset(fe, 0, osb->sb->s_blocksize); | |
551 | ||
552 | fe->i_generation = cpu_to_le32(inode->i_generation); | |
553 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); | |
554 | fe->i_blkno = cpu_to_le64(fe_blkno); | |
2b6cb576 | 555 | fe->i_suballoc_loc = cpu_to_le64(suballoc_loc); |
ccd979bd | 556 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); |
4d0ddb2c | 557 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
2c034176 EB |
558 | fe->i_uid = cpu_to_le32(i_uid_read(inode)); |
559 | fe->i_gid = cpu_to_le32(i_gid_read(inode)); | |
f5d36202 TY |
560 | fe->i_mode = cpu_to_le16(inode->i_mode); |
561 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) | |
ccd979bd | 562 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
198a1ca3 MF |
563 | |
564 | ocfs2_set_links_count(fe, inode->i_nlink); | |
ccd979bd MF |
565 | |
566 | fe->i_last_eb_blk = 0; | |
567 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); | |
13eb9887 | 568 | fe->i_flags |= cpu_to_le32(OCFS2_VALID_FL); |
c62c38f6 | 569 | ktime_get_real_ts64(&ts); |
ccd979bd | 570 | fe->i_atime = fe->i_ctime = fe->i_mtime = |
c62c38f6 | 571 | cpu_to_le64(ts.tv_sec); |
ccd979bd | 572 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = |
c62c38f6 | 573 | cpu_to_le32(ts.tv_nsec); |
ccd979bd MF |
574 | fe->i_dtime = 0; |
575 | ||
5b6a3a2b | 576 | /* |
9b7895ef MF |
577 | * If supported, directories start with inline data. If inline |
578 | * isn't supported, but indexing is, we start them as indexed. | |
5b6a3a2b | 579 | */ |
9b7895ef | 580 | feat = le16_to_cpu(fe->i_dyn_features); |
f5d36202 | 581 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
5b6a3a2b MF |
582 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
583 | ||
d9ae49d6 TY |
584 | fe->id2.i_data.id_count = cpu_to_le16( |
585 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); | |
5b6a3a2b MF |
586 | } else { |
587 | fel = &fe->id2.i_list; | |
588 | fel->l_tree_depth = 0; | |
589 | fel->l_next_free_rec = 0; | |
590 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); | |
591 | } | |
ccd979bd | 592 | |
ec20cec7 | 593 | ocfs2_journal_dirty(handle, *new_fe_bh); |
ccd979bd | 594 | |
b657c95c | 595 | ocfs2_populate_inode(inode, fe, 1); |
0cf2f763 | 596 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
c271c5c2 SM |
597 | if (!ocfs2_mount_local(osb)) { |
598 | status = ocfs2_create_new_inode_locks(inode); | |
599 | if (status < 0) | |
600 | mlog_errno(status); | |
601 | } | |
ccd979bd | 602 | |
25b69918 | 603 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
2931cdcb | 604 | |
ccd979bd MF |
605 | leave: |
606 | if (status < 0) { | |
607 | if (*new_fe_bh) { | |
608 | brelse(*new_fe_bh); | |
609 | *new_fe_bh = NULL; | |
610 | } | |
ccd979bd MF |
611 | } |
612 | ||
c1e8d35e TM |
613 | if (status) |
614 | mlog_errno(status); | |
ccd979bd MF |
615 | return status; |
616 | } | |
617 | ||
021960ca MF |
618 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
619 | struct inode *dir, | |
620 | struct inode *inode, | |
621 | dev_t dev, | |
622 | struct buffer_head **new_fe_bh, | |
623 | struct buffer_head *parent_fe_bh, | |
624 | handle_t *handle, | |
625 | struct ocfs2_alloc_context *inode_ac) | |
626 | { | |
627 | int status = 0; | |
628 | u64 suballoc_loc, fe_blkno = 0; | |
629 | u16 suballoc_bit; | |
630 | ||
631 | *new_fe_bh = NULL; | |
632 | ||
633 | status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh, | |
634 | inode_ac, &suballoc_loc, | |
635 | &suballoc_bit, &fe_blkno); | |
636 | if (status < 0) { | |
637 | mlog_errno(status); | |
638 | return status; | |
639 | } | |
640 | ||
759a7c61 | 641 | return __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh, |
021960ca MF |
642 | parent_fe_bh, handle, inode_ac, |
643 | fe_blkno, suballoc_loc, suballoc_bit); | |
644 | } | |
645 | ||
c54bd91e | 646 | static int ocfs2_mkdir(struct mnt_idmap *idmap, |
549c7297 | 647 | struct inode *dir, |
ccd979bd | 648 | struct dentry *dentry, |
18bb1db3 | 649 | umode_t mode) |
ccd979bd MF |
650 | { |
651 | int ret; | |
652 | ||
8990e44a TM |
653 | trace_ocfs2_mkdir(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
654 | OCFS2_I(dir)->ip_blkno, mode); | |
5ebb29be | 655 | ret = ocfs2_mknod(&nop_mnt_idmap, dir, dentry, mode | S_IFDIR, 0); |
c1e8d35e TM |
656 | if (ret) |
657 | mlog_errno(ret); | |
ccd979bd MF |
658 | |
659 | return ret; | |
660 | } | |
661 | ||
6c960e68 | 662 | static int ocfs2_create(struct mnt_idmap *idmap, |
549c7297 | 663 | struct inode *dir, |
ccd979bd | 664 | struct dentry *dentry, |
4acdaf27 | 665 | umode_t mode, |
ebfc3b49 | 666 | bool excl) |
ccd979bd MF |
667 | { |
668 | int ret; | |
669 | ||
8990e44a TM |
670 | trace_ocfs2_create(dir, dentry, dentry->d_name.len, dentry->d_name.name, |
671 | (unsigned long long)OCFS2_I(dir)->ip_blkno, mode); | |
5ebb29be | 672 | ret = ocfs2_mknod(&nop_mnt_idmap, dir, dentry, mode | S_IFREG, 0); |
c1e8d35e TM |
673 | if (ret) |
674 | mlog_errno(ret); | |
ccd979bd MF |
675 | |
676 | return ret; | |
677 | } | |
678 | ||
679 | static int ocfs2_link(struct dentry *old_dentry, | |
680 | struct inode *dir, | |
681 | struct dentry *dentry) | |
682 | { | |
1fabe148 | 683 | handle_t *handle; |
2b0143b5 DH |
684 | struct inode *inode = d_inode(old_dentry); |
685 | struct inode *old_dir = d_inode(old_dentry->d_parent); | |
ccd979bd MF |
686 | int err; |
687 | struct buffer_head *fe_bh = NULL; | |
53dc20b9 | 688 | struct buffer_head *old_dir_bh = NULL; |
ccd979bd | 689 | struct buffer_head *parent_fe_bh = NULL; |
ccd979bd MF |
690 | struct ocfs2_dinode *fe = NULL; |
691 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
4a12ca3a | 692 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 | 693 | sigset_t oldset; |
0e048316 | 694 | u64 old_de_ino; |
ccd979bd | 695 | |
8990e44a TM |
696 | trace_ocfs2_link((unsigned long long)OCFS2_I(inode)->ip_blkno, |
697 | old_dentry->d_name.len, old_dentry->d_name.name, | |
698 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 699 | |
123a9643 MF |
700 | if (S_ISDIR(inode->i_mode)) |
701 | return -EPERM; | |
ccd979bd | 702 | |
9c89fe0a JK |
703 | err = dquot_initialize(dir); |
704 | if (err) { | |
705 | mlog_errno(err); | |
706 | return err; | |
707 | } | |
907f4554 | 708 | |
53dc20b9 X |
709 | err = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
710 | &parent_fe_bh, dir, 0); | |
ccd979bd MF |
711 | if (err < 0) { |
712 | if (err != -ENOENT) | |
713 | mlog_errno(err); | |
123a9643 | 714 | return err; |
ccd979bd MF |
715 | } |
716 | ||
53dc20b9 X |
717 | /* make sure both dirs have bhs |
718 | * get an extra ref on old_dir_bh if old==new */ | |
719 | if (!parent_fe_bh) { | |
720 | if (old_dir_bh) { | |
721 | parent_fe_bh = old_dir_bh; | |
722 | get_bh(parent_fe_bh); | |
723 | } else { | |
724 | mlog(ML_ERROR, "%s: no old_dir_bh!\n", osb->uuid_str); | |
725 | err = -EIO; | |
726 | goto out; | |
727 | } | |
728 | } | |
729 | ||
0f62de2c TY |
730 | if (!dir->i_nlink) { |
731 | err = -ENOENT; | |
123a9643 | 732 | goto out; |
0f62de2c TY |
733 | } |
734 | ||
53dc20b9 | 735 | err = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
0e048316 X |
736 | old_dentry->d_name.len, &old_de_ino); |
737 | if (err) { | |
738 | err = -ENOENT; | |
739 | goto out; | |
740 | } | |
741 | ||
742 | /* | |
743 | * Check whether another node removed the source inode while we | |
744 | * were in the vfs. | |
745 | */ | |
746 | if (old_de_ino != OCFS2_I(inode)->ip_blkno) { | |
747 | err = -ENOENT; | |
748 | goto out; | |
749 | } | |
750 | ||
ccd979bd MF |
751 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
752 | dentry->d_name.len); | |
753 | if (err) | |
123a9643 | 754 | goto out; |
ccd979bd MF |
755 | |
756 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
757 | dentry->d_name.name, | |
4a12ca3a | 758 | dentry->d_name.len, &lookup); |
ccd979bd MF |
759 | if (err < 0) { |
760 | mlog_errno(err); | |
123a9643 | 761 | goto out; |
ccd979bd MF |
762 | } |
763 | ||
e63aecb6 | 764 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
765 | if (err < 0) { |
766 | if (err != -ENOENT) | |
767 | mlog_errno(err); | |
123a9643 | 768 | goto out; |
ccd979bd MF |
769 | } |
770 | ||
771 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
198a1ca3 | 772 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
ccd979bd | 773 | err = -EMLINK; |
123a9643 | 774 | goto out_unlock_inode; |
ccd979bd MF |
775 | } |
776 | ||
a90714c1 | 777 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
ccd979bd MF |
778 | if (IS_ERR(handle)) { |
779 | err = PTR_ERR(handle); | |
780 | handle = NULL; | |
781 | mlog_errno(err); | |
123a9643 | 782 | goto out_unlock_inode; |
ccd979bd MF |
783 | } |
784 | ||
547ba7c8 JB |
785 | /* Starting to change things, restart is no longer possible. */ |
786 | ocfs2_block_signals(&oldset); | |
787 | ||
0cf2f763 | 788 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 789 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
790 | if (err < 0) { |
791 | mlog_errno(err); | |
123a9643 | 792 | goto out_commit; |
ccd979bd MF |
793 | } |
794 | ||
d8c76e6f | 795 | inc_nlink(inode); |
6861de97 | 796 | inode_set_ctime_current(inode); |
198a1ca3 | 797 | ocfs2_set_links_count(fe, inode->i_nlink); |
6861de97 JL |
798 | fe->i_ctime = cpu_to_le64(inode_get_ctime(inode).tv_sec); |
799 | fe->i_ctime_nsec = cpu_to_le32(inode_get_ctime(inode).tv_nsec); | |
ec20cec7 | 800 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd MF |
801 | |
802 | err = ocfs2_add_entry(handle, dentry, inode, | |
803 | OCFS2_I(inode)->ip_blkno, | |
4a12ca3a | 804 | parent_fe_bh, &lookup); |
ccd979bd | 805 | if (err) { |
198a1ca3 | 806 | ocfs2_add_links_count(fe, -1); |
9a53c3a7 | 807 | drop_nlink(inode); |
ccd979bd | 808 | mlog_errno(err); |
123a9643 | 809 | goto out_commit; |
ccd979bd MF |
810 | } |
811 | ||
0027dd5b | 812 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
379dfe9d MF |
813 | if (err) { |
814 | mlog_errno(err); | |
123a9643 | 815 | goto out_commit; |
379dfe9d MF |
816 | } |
817 | ||
7de9c6ee | 818 | ihold(inode); |
ccd979bd | 819 | d_instantiate(dentry, inode); |
123a9643 MF |
820 | |
821 | out_commit: | |
02dc1af4 | 822 | ocfs2_commit_trans(osb, handle); |
547ba7c8 | 823 | ocfs2_unblock_signals(&oldset); |
123a9643 | 824 | out_unlock_inode: |
e63aecb6 | 825 | ocfs2_inode_unlock(inode, 1); |
123a9643 MF |
826 | |
827 | out: | |
53dc20b9 | 828 | ocfs2_double_unlock(old_dir, dir); |
123a9643 | 829 | |
a81cb88b MF |
830 | brelse(fe_bh); |
831 | brelse(parent_fe_bh); | |
53dc20b9 | 832 | brelse(old_dir_bh); |
ccd979bd | 833 | |
4a12ca3a MF |
834 | ocfs2_free_dir_lookup_result(&lookup); |
835 | ||
c1e8d35e TM |
836 | if (err) |
837 | mlog_errno(err); | |
ccd979bd MF |
838 | |
839 | return err; | |
840 | } | |
841 | ||
379dfe9d MF |
842 | /* |
843 | * Takes and drops an exclusive lock on the given dentry. This will | |
844 | * force other nodes to drop it. | |
845 | */ | |
846 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) | |
847 | { | |
848 | int ret; | |
849 | ||
850 | ret = ocfs2_dentry_lock(dentry, 1); | |
851 | if (ret) | |
852 | mlog_errno(ret); | |
853 | else | |
854 | ocfs2_dentry_unlock(dentry, 1); | |
855 | ||
856 | return ret; | |
857 | } | |
858 | ||
b5a8bb71 | 859 | static inline int ocfs2_inode_is_unlinkable(struct inode *inode) |
17ff7856 MF |
860 | { |
861 | if (S_ISDIR(inode->i_mode)) { | |
862 | if (inode->i_nlink == 2) | |
863 | return 1; | |
864 | return 0; | |
865 | } | |
866 | ||
867 | if (inode->i_nlink == 1) | |
868 | return 1; | |
869 | return 0; | |
870 | } | |
871 | ||
ccd979bd MF |
872 | static int ocfs2_unlink(struct inode *dir, |
873 | struct dentry *dentry) | |
874 | { | |
875 | int status; | |
30a4f5e8 | 876 | int child_locked = 0; |
b5a8bb71 | 877 | bool is_unlinkable = false; |
2b0143b5 | 878 | struct inode *inode = d_inode(dentry); |
5098c27b | 879 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
880 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
881 | u64 blkno; | |
882 | struct ocfs2_dinode *fe = NULL; | |
883 | struct buffer_head *fe_bh = NULL; | |
884 | struct buffer_head *parent_node_bh = NULL; | |
1fabe148 | 885 | handle_t *handle = NULL; |
ccd979bd | 886 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
4a12ca3a MF |
887 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
888 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
ccd979bd | 889 | |
8990e44a TM |
890 | trace_ocfs2_unlink(dir, dentry, dentry->d_name.len, |
891 | dentry->d_name.name, | |
892 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
893 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 894 | |
9c89fe0a JK |
895 | status = dquot_initialize(dir); |
896 | if (status) { | |
897 | mlog_errno(status); | |
898 | return status; | |
899 | } | |
907f4554 | 900 | |
2b0143b5 | 901 | BUG_ON(d_inode(dentry->d_parent) != dir); |
ccd979bd | 902 | |
8990e44a | 903 | if (inode == osb->root_inode) |
30a4f5e8 | 904 | return -EPERM; |
ccd979bd | 905 | |
cb25797d JK |
906 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
907 | OI_LS_PARENT); | |
ccd979bd MF |
908 | if (status < 0) { |
909 | if (status != -ENOENT) | |
910 | mlog_errno(status); | |
30a4f5e8 | 911 | return status; |
ccd979bd MF |
912 | } |
913 | ||
914 | status = ocfs2_find_files_on_disk(dentry->d_name.name, | |
4a12ca3a MF |
915 | dentry->d_name.len, &blkno, dir, |
916 | &lookup); | |
ccd979bd MF |
917 | if (status < 0) { |
918 | if (status != -ENOENT) | |
919 | mlog_errno(status); | |
920 | goto leave; | |
921 | } | |
922 | ||
923 | if (OCFS2_I(inode)->ip_blkno != blkno) { | |
924 | status = -ENOENT; | |
925 | ||
8990e44a TM |
926 | trace_ocfs2_unlink_noent( |
927 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
928 | (unsigned long long)blkno, | |
929 | OCFS2_I(inode)->ip_flags); | |
ccd979bd MF |
930 | goto leave; |
931 | } | |
932 | ||
e63aecb6 | 933 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
ccd979bd MF |
934 | if (status < 0) { |
935 | if (status != -ENOENT) | |
936 | mlog_errno(status); | |
937 | goto leave; | |
938 | } | |
30a4f5e8 | 939 | child_locked = 1; |
ccd979bd MF |
940 | |
941 | if (S_ISDIR(inode->i_mode)) { | |
b80b549c | 942 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
ccd979bd MF |
943 | status = -ENOTEMPTY; |
944 | goto leave; | |
945 | } | |
946 | } | |
947 | ||
379dfe9d | 948 | status = ocfs2_remote_dentry_delete(dentry); |
ccd979bd | 949 | if (status < 0) { |
34d024f8 | 950 | /* This remote delete should succeed under all normal |
ccd979bd MF |
951 | * circumstances. */ |
952 | mlog_errno(status); | |
953 | goto leave; | |
954 | } | |
955 | ||
b5a8bb71 | 956 | if (ocfs2_inode_is_unlinkable(inode)) { |
19bd341f TM |
957 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
958 | OCFS2_I(inode)->ip_blkno, | |
06ee5c75 JQ |
959 | orphan_name, &orphan_insert, |
960 | false); | |
ccd979bd MF |
961 | if (status < 0) { |
962 | mlog_errno(status); | |
963 | goto leave; | |
964 | } | |
b5a8bb71 | 965 | is_unlinkable = true; |
ccd979bd MF |
966 | } |
967 | ||
a90714c1 | 968 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
ccd979bd MF |
969 | if (IS_ERR(handle)) { |
970 | status = PTR_ERR(handle); | |
971 | handle = NULL; | |
972 | mlog_errno(status); | |
973 | goto leave; | |
974 | } | |
975 | ||
0cf2f763 | 976 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
13723d00 | 977 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
978 | if (status < 0) { |
979 | mlog_errno(status); | |
980 | goto leave; | |
981 | } | |
982 | ||
983 | fe = (struct ocfs2_dinode *) fe_bh->b_data; | |
984 | ||
ccd979bd | 985 | /* delete the name from the parent dir */ |
4a12ca3a | 986 | status = ocfs2_delete_entry(handle, dir, &lookup); |
ccd979bd MF |
987 | if (status < 0) { |
988 | mlog_errno(status); | |
989 | goto leave; | |
990 | } | |
991 | ||
17ff7856 MF |
992 | if (S_ISDIR(inode->i_mode)) |
993 | drop_nlink(inode); | |
994 | drop_nlink(inode); | |
198a1ca3 | 995 | ocfs2_set_links_count(fe, inode->i_nlink); |
ec20cec7 | 996 | ocfs2_journal_dirty(handle, fe_bh); |
ccd979bd | 997 | |
6861de97 | 998 | dir->i_mtime = inode_set_ctime_current(dir); |
592282cf | 999 | if (S_ISDIR(inode->i_mode)) |
17ff7856 | 1000 | drop_nlink(dir); |
592282cf MF |
1001 | |
1002 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); | |
1003 | if (status < 0) { | |
1004 | mlog_errno(status); | |
1005 | if (S_ISDIR(inode->i_mode)) | |
d8c76e6f | 1006 | inc_nlink(dir); |
b5a8bb71 YL |
1007 | goto leave; |
1008 | } | |
1009 | ||
1010 | if (is_unlinkable) { | |
1011 | status = ocfs2_orphan_add(osb, handle, inode, fe_bh, | |
06ee5c75 | 1012 | orphan_name, &orphan_insert, orphan_dir, false); |
b5a8bb71 YL |
1013 | if (status < 0) |
1014 | mlog_errno(status); | |
ccd979bd MF |
1015 | } |
1016 | ||
1017 | leave: | |
ccd979bd | 1018 | if (handle) |
02dc1af4 | 1019 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1020 | |
5098c27b MF |
1021 | if (orphan_dir) { |
1022 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1023 | ocfs2_inode_unlock(orphan_dir, 1); |
5955102c | 1024 | inode_unlock(orphan_dir); |
5098c27b MF |
1025 | iput(orphan_dir); |
1026 | } | |
1027 | ||
3cb2ec43 JQ |
1028 | if (child_locked) |
1029 | ocfs2_inode_unlock(inode, 1); | |
1030 | ||
1031 | ocfs2_inode_unlock(dir, 1); | |
1032 | ||
a81cb88b | 1033 | brelse(fe_bh); |
a81cb88b | 1034 | brelse(parent_node_bh); |
4a12ca3a MF |
1035 | |
1036 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1037 | ocfs2_free_dir_lookup_result(&lookup); | |
ccd979bd | 1038 | |
f5b25855 | 1039 | if (status && (status != -ENOTEMPTY) && (status != -ENOENT)) |
c1e8d35e | 1040 | mlog_errno(status); |
ccd979bd MF |
1041 | |
1042 | return status; | |
1043 | } | |
1044 | ||
f7a14f32 YJ |
1045 | static int ocfs2_check_if_ancestor(struct ocfs2_super *osb, |
1046 | u64 src_inode_no, u64 dest_inode_no) | |
1047 | { | |
1048 | int ret = 0, i = 0; | |
1049 | u64 parent_inode_no = 0; | |
1050 | u64 child_inode_no = src_inode_no; | |
1051 | struct inode *child_inode; | |
1052 | ||
1053 | #define MAX_LOOKUP_TIMES 32 | |
1054 | while (1) { | |
1055 | child_inode = ocfs2_iget(osb, child_inode_no, 0, 0); | |
1056 | if (IS_ERR(child_inode)) { | |
1057 | ret = PTR_ERR(child_inode); | |
1058 | break; | |
1059 | } | |
1060 | ||
1061 | ret = ocfs2_inode_lock(child_inode, NULL, 0); | |
1062 | if (ret < 0) { | |
1063 | iput(child_inode); | |
1064 | if (ret != -ENOENT) | |
1065 | mlog_errno(ret); | |
1066 | break; | |
1067 | } | |
1068 | ||
1069 | ret = ocfs2_lookup_ino_from_name(child_inode, "..", 2, | |
1070 | &parent_inode_no); | |
1071 | ocfs2_inode_unlock(child_inode, 0); | |
1072 | iput(child_inode); | |
1073 | if (ret < 0) { | |
1074 | ret = -ENOENT; | |
1075 | break; | |
1076 | } | |
1077 | ||
1078 | if (parent_inode_no == dest_inode_no) { | |
1079 | ret = 1; | |
1080 | break; | |
1081 | } | |
1082 | ||
1083 | if (parent_inode_no == osb->root_inode->i_ino) { | |
1084 | ret = 0; | |
1085 | break; | |
1086 | } | |
1087 | ||
1088 | child_inode_no = parent_inode_no; | |
1089 | ||
1090 | if (++i >= MAX_LOOKUP_TIMES) { | |
45680967 MFO |
1091 | mlog_ratelimited(ML_NOTICE, "max lookup times reached, " |
1092 | "filesystem may have nested directories, " | |
f7a14f32 YJ |
1093 | "src inode: %llu, dest inode: %llu.\n", |
1094 | (unsigned long long)src_inode_no, | |
1095 | (unsigned long long)dest_inode_no); | |
1096 | ret = 0; | |
1097 | break; | |
1098 | } | |
1099 | } | |
1100 | ||
1101 | return ret; | |
1102 | } | |
1103 | ||
ccd979bd | 1104 | /* |
53dc20b9 | 1105 | * The only place this should be used is rename and link! |
ccd979bd MF |
1106 | * if they have the same id, then the 1st one is the only one locked. |
1107 | */ | |
1108 | static int ocfs2_double_lock(struct ocfs2_super *osb, | |
ccd979bd MF |
1109 | struct buffer_head **bh1, |
1110 | struct inode *inode1, | |
1111 | struct buffer_head **bh2, | |
53dc20b9 X |
1112 | struct inode *inode2, |
1113 | int rename) | |
ccd979bd MF |
1114 | { |
1115 | int status; | |
f7a14f32 | 1116 | int inode1_is_ancestor, inode2_is_ancestor; |
ccd979bd MF |
1117 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); |
1118 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); | |
ccd979bd | 1119 | |
8990e44a TM |
1120 | trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno, |
1121 | (unsigned long long)oi2->ip_blkno); | |
ccd979bd | 1122 | |
ccd979bd MF |
1123 | if (*bh1) |
1124 | *bh1 = NULL; | |
1125 | if (*bh2) | |
1126 | *bh2 = NULL; | |
1127 | ||
f7a14f32 YJ |
1128 | /* we always want to lock the one with the lower lockid first. |
1129 | * and if they are nested, we lock ancestor first */ | |
ccd979bd | 1130 | if (oi1->ip_blkno != oi2->ip_blkno) { |
f7a14f32 YJ |
1131 | inode1_is_ancestor = ocfs2_check_if_ancestor(osb, oi2->ip_blkno, |
1132 | oi1->ip_blkno); | |
1133 | if (inode1_is_ancestor < 0) { | |
1134 | status = inode1_is_ancestor; | |
1135 | goto bail; | |
1136 | } | |
1137 | ||
1138 | inode2_is_ancestor = ocfs2_check_if_ancestor(osb, oi1->ip_blkno, | |
1139 | oi2->ip_blkno); | |
1140 | if (inode2_is_ancestor < 0) { | |
1141 | status = inode2_is_ancestor; | |
1142 | goto bail; | |
1143 | } | |
1144 | ||
1145 | if ((inode1_is_ancestor == 1) || | |
1146 | (oi1->ip_blkno < oi2->ip_blkno && | |
1147 | inode2_is_ancestor == 0)) { | |
ccd979bd | 1148 | /* switch id1 and id2 around */ |
ab1ba021 FF |
1149 | swap(bh2, bh1); |
1150 | swap(inode2, inode1); | |
ccd979bd MF |
1151 | } |
1152 | /* lock id2 */ | |
cb25797d | 1153 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
53dc20b9 | 1154 | rename == 1 ? OI_LS_RENAME1 : OI_LS_PARENT); |
ccd979bd MF |
1155 | if (status < 0) { |
1156 | if (status != -ENOENT) | |
1157 | mlog_errno(status); | |
1158 | goto bail; | |
1159 | } | |
1160 | } | |
8d5596c6 | 1161 | |
ccd979bd | 1162 | /* lock id1 */ |
53dc20b9 X |
1163 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, |
1164 | rename == 1 ? OI_LS_RENAME2 : OI_LS_PARENT); | |
ccd979bd | 1165 | if (status < 0) { |
8d5596c6 MF |
1166 | /* |
1167 | * An error return must mean that no cluster locks | |
1168 | * were held on function exit. | |
1169 | */ | |
1e6d9153 | 1170 | if (oi1->ip_blkno != oi2->ip_blkno) { |
e63aecb6 | 1171 | ocfs2_inode_unlock(inode2, 1); |
1e6d9153 TM |
1172 | brelse(*bh2); |
1173 | *bh2 = NULL; | |
1174 | } | |
8d5596c6 | 1175 | |
ccd979bd MF |
1176 | if (status != -ENOENT) |
1177 | mlog_errno(status); | |
ccd979bd | 1178 | } |
8d5596c6 | 1179 | |
8990e44a | 1180 | trace_ocfs2_double_lock_end( |
d324cd4c | 1181 | (unsigned long long)oi1->ip_blkno, |
1182 | (unsigned long long)oi2->ip_blkno); | |
8990e44a | 1183 | |
ccd979bd | 1184 | bail: |
c1e8d35e TM |
1185 | if (status) |
1186 | mlog_errno(status); | |
ccd979bd MF |
1187 | return status; |
1188 | } | |
1189 | ||
8d5596c6 MF |
1190 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
1191 | { | |
e63aecb6 | 1192 | ocfs2_inode_unlock(inode1, 1); |
8d5596c6 MF |
1193 | |
1194 | if (inode1 != inode2) | |
e63aecb6 | 1195 | ocfs2_inode_unlock(inode2, 1); |
8d5596c6 MF |
1196 | } |
1197 | ||
e18275ae | 1198 | static int ocfs2_rename(struct mnt_idmap *idmap, |
549c7297 | 1199 | struct inode *old_dir, |
ccd979bd MF |
1200 | struct dentry *old_dentry, |
1201 | struct inode *new_dir, | |
1cd66c93 MS |
1202 | struct dentry *new_dentry, |
1203 | unsigned int flags) | |
ccd979bd | 1204 | { |
4a12ca3a MF |
1205 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
1206 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; | |
2b0143b5 DH |
1207 | struct inode *old_inode = d_inode(old_dentry); |
1208 | struct inode *new_inode = d_inode(new_dentry); | |
5098c27b | 1209 | struct inode *orphan_dir = NULL; |
ccd979bd MF |
1210 | struct ocfs2_dinode *newfe = NULL; |
1211 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
ccd979bd | 1212 | struct buffer_head *newfe_bh = NULL; |
592282cf | 1213 | struct buffer_head *old_inode_bh = NULL; |
ccd979bd | 1214 | struct ocfs2_super *osb = NULL; |
5b6a3a2b | 1215 | u64 newfe_blkno, old_de_ino; |
1fabe148 | 1216 | handle_t *handle = NULL; |
ccd979bd MF |
1217 | struct buffer_head *old_dir_bh = NULL; |
1218 | struct buffer_head *new_dir_bh = NULL; | |
847c9db5 | 1219 | u32 old_dir_nlink = old_dir->i_nlink; |
480214d7 | 1220 | struct ocfs2_dinode *old_di; |
4a12ca3a MF |
1221 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
1222 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; | |
1223 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; | |
1224 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
1225 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; | |
5fb1beb0 | 1226 | bool should_add_orphan = false; |
ccd979bd | 1227 | |
1cd66c93 MS |
1228 | if (flags) |
1229 | return -EINVAL; | |
1230 | ||
ccd979bd MF |
1231 | /* At some point it might be nice to break this function up a |
1232 | * bit. */ | |
1233 | ||
8990e44a TM |
1234 | trace_ocfs2_rename(old_dir, old_dentry, new_dir, new_dentry, |
1235 | old_dentry->d_name.len, old_dentry->d_name.name, | |
1236 | new_dentry->d_name.len, new_dentry->d_name.name); | |
ccd979bd | 1237 | |
9c89fe0a JK |
1238 | status = dquot_initialize(old_dir); |
1239 | if (status) { | |
1240 | mlog_errno(status); | |
1241 | goto bail; | |
1242 | } | |
1243 | status = dquot_initialize(new_dir); | |
1244 | if (status) { | |
1245 | mlog_errno(status); | |
1246 | goto bail; | |
1247 | } | |
907f4554 | 1248 | |
ccd979bd MF |
1249 | osb = OCFS2_SB(old_dir->i_sb); |
1250 | ||
1251 | if (new_inode) { | |
1252 | if (!igrab(new_inode)) | |
1253 | BUG(); | |
1254 | } | |
1255 | ||
1b3c3714 | 1256 | /* Assume a directory hierarchy thusly: |
ccd979bd MF |
1257 | * a/b/c |
1258 | * a/d | |
1259 | * a,b,c, and d are all directories. | |
1260 | * | |
1261 | * from cwd of 'a' on both nodes: | |
1262 | * node1: mv b/c d | |
1263 | * node2: mv d b/c | |
1264 | * | |
1265 | * And that's why, just like the VFS, we need a file system | |
1266 | * rename lock. */ | |
5dabd695 | 1267 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
ccd979bd MF |
1268 | status = ocfs2_rename_lock(osb); |
1269 | if (status < 0) { | |
1270 | mlog_errno(status); | |
1271 | goto bail; | |
1272 | } | |
1273 | rename_lock = 1; | |
f7a14f32 YJ |
1274 | |
1275 | /* here we cannot guarantee the inodes haven't just been | |
1276 | * changed, so check if they are nested again */ | |
1277 | status = ocfs2_check_if_ancestor(osb, new_dir->i_ino, | |
1278 | old_inode->i_ino); | |
1279 | if (status < 0) { | |
1280 | mlog_errno(status); | |
1281 | goto bail; | |
1282 | } else if (status == 1) { | |
1283 | status = -EPERM; | |
1284 | trace_ocfs2_rename_not_permitted( | |
1285 | (unsigned long long)old_inode->i_ino, | |
1286 | (unsigned long long)new_dir->i_ino); | |
1287 | goto bail; | |
1288 | } | |
ccd979bd MF |
1289 | } |
1290 | ||
ccd979bd | 1291 | /* if old and new are the same, this'll just do one lock. */ |
8d5596c6 | 1292 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
53dc20b9 | 1293 | &new_dir_bh, new_dir, 1); |
ccd979bd MF |
1294 | if (status < 0) { |
1295 | mlog_errno(status); | |
1296 | goto bail; | |
1297 | } | |
8d5596c6 | 1298 | parents_locked = 1; |
ccd979bd | 1299 | |
928dda1f YJ |
1300 | if (!new_dir->i_nlink) { |
1301 | status = -EACCES; | |
1302 | goto bail; | |
1303 | } | |
1304 | ||
ccd979bd MF |
1305 | /* make sure both dirs have bhs |
1306 | * get an extra ref on old_dir_bh if old==new */ | |
1307 | if (!new_dir_bh) { | |
1308 | if (old_dir_bh) { | |
1309 | new_dir_bh = old_dir_bh; | |
1310 | get_bh(new_dir_bh); | |
1311 | } else { | |
1312 | mlog(ML_ERROR, "no old_dir_bh!\n"); | |
1313 | status = -EIO; | |
1314 | goto bail; | |
1315 | } | |
1316 | } | |
1317 | ||
379dfe9d | 1318 | /* |
592282cf | 1319 | * Aside from allowing a meta data update, the locking here |
34d024f8 MF |
1320 | * also ensures that the downconvert thread on other nodes |
1321 | * won't have to concurrently downconvert the inode and the | |
1322 | * dentry locks. | |
379dfe9d | 1323 | */ |
cb25797d JK |
1324 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
1325 | OI_LS_PARENT); | |
379dfe9d MF |
1326 | if (status < 0) { |
1327 | if (status != -ENOENT) | |
ccd979bd | 1328 | mlog_errno(status); |
379dfe9d MF |
1329 | goto bail; |
1330 | } | |
8d5596c6 | 1331 | old_child_locked = 1; |
ccd979bd | 1332 | |
379dfe9d MF |
1333 | status = ocfs2_remote_dentry_delete(old_dentry); |
1334 | if (status < 0) { | |
1335 | mlog_errno(status); | |
1336 | goto bail; | |
1337 | } | |
1338 | ||
1339 | if (S_ISDIR(old_inode->i_mode)) { | |
38760e24 MF |
1340 | u64 old_inode_parent; |
1341 | ||
4a12ca3a | 1342 | update_dot_dot = 1; |
38760e24 | 1343 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
4a12ca3a MF |
1344 | old_inode, |
1345 | &old_inode_dot_dot_res); | |
38760e24 MF |
1346 | if (status) { |
1347 | status = -EIO; | |
ccd979bd | 1348 | goto bail; |
38760e24 | 1349 | } |
ccd979bd | 1350 | |
38760e24 MF |
1351 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
1352 | status = -EIO; | |
ccd979bd | 1353 | goto bail; |
38760e24 MF |
1354 | } |
1355 | ||
1356 | if (!new_inode && new_dir != old_dir && | |
198a1ca3 | 1357 | new_dir->i_nlink >= ocfs2_link_max(osb)) { |
38760e24 | 1358 | status = -EMLINK; |
ccd979bd | 1359 | goto bail; |
38760e24 | 1360 | } |
ccd979bd MF |
1361 | } |
1362 | ||
5b6a3a2b MF |
1363 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
1364 | old_dentry->d_name.len, | |
1365 | &old_de_ino); | |
1366 | if (status) { | |
1367 | status = -ENOENT; | |
ccd979bd | 1368 | goto bail; |
5b6a3a2b | 1369 | } |
ccd979bd MF |
1370 | |
1371 | /* | |
1372 | * Check for inode number is _not_ due to possible IO errors. | |
1373 | * We might rmdir the source, keep it as pwd of some process | |
1374 | * and merrily kill the link to whatever was created under the | |
1375 | * same name. Goodbye sticky bit ;-< | |
1376 | */ | |
5b6a3a2b MF |
1377 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
1378 | status = -ENOENT; | |
ccd979bd | 1379 | goto bail; |
5b6a3a2b | 1380 | } |
ccd979bd MF |
1381 | |
1382 | /* check if the target already exists (in which case we need | |
1383 | * to delete it */ | |
1384 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, | |
1385 | new_dentry->d_name.len, | |
4a12ca3a MF |
1386 | &newfe_blkno, new_dir, |
1387 | &target_lookup_res); | |
ccd979bd MF |
1388 | /* The only error we allow here is -ENOENT because the new |
1389 | * file not existing is perfectly valid. */ | |
1390 | if ((status < 0) && (status != -ENOENT)) { | |
1391 | /* If we cannot find the file specified we should just */ | |
1392 | /* return the error... */ | |
1393 | mlog_errno(status); | |
1394 | goto bail; | |
1395 | } | |
4a12ca3a MF |
1396 | if (status == 0) |
1397 | target_exists = 1; | |
ccd979bd | 1398 | |
4a12ca3a | 1399 | if (!target_exists && new_inode) { |
e325a88f SE |
1400 | /* |
1401 | * Target was unlinked by another node while we were | |
1402 | * waiting to get to ocfs2_rename(). There isn't | |
1403 | * anything we can do here to help the situation, so | |
1404 | * bubble up the appropriate error. | |
1405 | */ | |
1406 | status = -ENOENT; | |
1407 | goto bail; | |
1408 | } | |
ccd979bd MF |
1409 | |
1410 | /* In case we need to overwrite an existing file, we blow it | |
1411 | * away first */ | |
4a12ca3a | 1412 | if (target_exists) { |
ccd979bd MF |
1413 | /* VFS didn't think there existed an inode here, but |
1414 | * someone else in the cluster must have raced our | |
1415 | * rename to create one. Today we error cleanly, in | |
1416 | * the future we should consider calling iget to build | |
1417 | * a new struct inode for this entry. */ | |
1418 | if (!new_inode) { | |
1419 | status = -EACCES; | |
1420 | ||
8990e44a TM |
1421 | trace_ocfs2_rename_target_exists(new_dentry->d_name.len, |
1422 | new_dentry->d_name.name); | |
ccd979bd MF |
1423 | goto bail; |
1424 | } | |
1425 | ||
1426 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { | |
1427 | status = -EACCES; | |
1428 | ||
8990e44a | 1429 | trace_ocfs2_rename_disagree( |
b0697053 MF |
1430 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, |
1431 | (unsigned long long)newfe_blkno, | |
ccd979bd MF |
1432 | OCFS2_I(new_inode)->ip_flags); |
1433 | goto bail; | |
1434 | } | |
1435 | ||
e63aecb6 | 1436 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
ccd979bd MF |
1437 | if (status < 0) { |
1438 | if (status != -ENOENT) | |
1439 | mlog_errno(status); | |
1440 | goto bail; | |
1441 | } | |
8d5596c6 | 1442 | new_child_locked = 1; |
ccd979bd | 1443 | |
379dfe9d | 1444 | status = ocfs2_remote_dentry_delete(new_dentry); |
ccd979bd MF |
1445 | if (status < 0) { |
1446 | mlog_errno(status); | |
1447 | goto bail; | |
1448 | } | |
1449 | ||
1450 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; | |
1451 | ||
8990e44a | 1452 | trace_ocfs2_rename_over_existing( |
b0697053 | 1453 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
ccd979bd MF |
1454 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
1455 | ||
1456 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { | |
5098c27b | 1457 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
19bd341f | 1458 | OCFS2_I(new_inode)->ip_blkno, |
06ee5c75 JQ |
1459 | orphan_name, &orphan_insert, |
1460 | false); | |
ccd979bd MF |
1461 | if (status < 0) { |
1462 | mlog_errno(status); | |
1463 | goto bail; | |
1464 | } | |
5fb1beb0 | 1465 | should_add_orphan = true; |
ccd979bd MF |
1466 | } |
1467 | } else { | |
2b0143b5 | 1468 | BUG_ON(d_inode(new_dentry->d_parent) != new_dir); |
ccd979bd MF |
1469 | |
1470 | status = ocfs2_check_dir_for_entry(new_dir, | |
1471 | new_dentry->d_name.name, | |
1472 | new_dentry->d_name.len); | |
1473 | if (status) | |
1474 | goto bail; | |
1475 | ||
1476 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, | |
1477 | new_dentry->d_name.name, | |
1478 | new_dentry->d_name.len, | |
4a12ca3a | 1479 | &target_insert); |
ccd979bd MF |
1480 | if (status < 0) { |
1481 | mlog_errno(status); | |
1482 | goto bail; | |
1483 | } | |
1484 | } | |
1485 | ||
a90714c1 | 1486 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
ccd979bd MF |
1487 | if (IS_ERR(handle)) { |
1488 | status = PTR_ERR(handle); | |
1489 | handle = NULL; | |
1490 | mlog_errno(status); | |
1491 | goto bail; | |
1492 | } | |
1493 | ||
4a12ca3a | 1494 | if (target_exists) { |
ccd979bd | 1495 | if (S_ISDIR(new_inode->i_mode)) { |
b80b549c MF |
1496 | if (new_inode->i_nlink != 2 || |
1497 | !ocfs2_empty_dir(new_inode)) { | |
ccd979bd MF |
1498 | status = -ENOTEMPTY; |
1499 | goto bail; | |
1500 | } | |
1501 | } | |
0cf2f763 JB |
1502 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
1503 | newfe_bh, | |
13723d00 | 1504 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1505 | if (status < 0) { |
1506 | mlog_errno(status); | |
1507 | goto bail; | |
1508 | } | |
1509 | ||
ccd979bd | 1510 | /* change the dirent to point to the correct inode */ |
4a12ca3a MF |
1511 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
1512 | old_inode); | |
ccd979bd MF |
1513 | if (status < 0) { |
1514 | mlog_errno(status); | |
1515 | goto bail; | |
1516 | } | |
cc56c33e | 1517 | inode_inc_iversion(new_dir); |
ccd979bd MF |
1518 | |
1519 | if (S_ISDIR(new_inode->i_mode)) | |
198a1ca3 | 1520 | ocfs2_set_links_count(newfe, 0); |
ccd979bd | 1521 | else |
198a1ca3 | 1522 | ocfs2_add_links_count(newfe, -1); |
ec20cec7 | 1523 | ocfs2_journal_dirty(handle, newfe_bh); |
5fb1beb0 | 1524 | if (should_add_orphan) { |
1525 | status = ocfs2_orphan_add(osb, handle, new_inode, | |
1526 | newfe_bh, orphan_name, | |
06ee5c75 | 1527 | &orphan_insert, orphan_dir, false); |
5fb1beb0 | 1528 | if (status < 0) { |
1529 | mlog_errno(status); | |
1530 | goto bail; | |
1531 | } | |
1532 | } | |
ccd979bd MF |
1533 | } else { |
1534 | /* if the name was not found in new_dir, add it now */ | |
1535 | status = ocfs2_add_entry(handle, new_dentry, old_inode, | |
1536 | OCFS2_I(old_inode)->ip_blkno, | |
4a12ca3a | 1537 | new_dir_bh, &target_insert); |
6b72e5f9 AC |
1538 | if (status < 0) { |
1539 | mlog_errno(status); | |
1540 | goto bail; | |
1541 | } | |
ccd979bd MF |
1542 | } |
1543 | ||
6861de97 | 1544 | inode_set_ctime_current(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 | ||
6861de97 JL |
1553 | old_di->i_ctime = cpu_to_le64(inode_get_ctime(old_inode).tv_sec); |
1554 | old_di->i_ctime_nsec = cpu_to_le32(inode_get_ctime(old_inode).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); |
6861de97 | 1593 | inode_set_ctime_current(new_inode); |
ccd979bd | 1594 | } |
6861de97 | 1595 | old_dir->i_mtime = inode_set_ctime_current(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.*/ | |
6861de97 JL |
1617 | new_dir->i_mtime = inode_set_ctime_to_ts(new_dir, |
1618 | inode_get_ctime(old_dir)); | |
592282cf MF |
1619 | |
1620 | /* | |
1621 | * This will also pick up the i_nlink change from the | |
1622 | * block above. | |
1623 | */ | |
1624 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); | |
1625 | } | |
ccd979bd MF |
1626 | |
1627 | if (old_dir_nlink != old_dir->i_nlink) { | |
1628 | if (!old_dir_bh) { | |
1629 | mlog(ML_ERROR, "need to change nlink for old dir " | |
b0697053 MF |
1630 | "%llu from %d to %d but bh is NULL!\n", |
1631 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, | |
1632 | (int)old_dir_nlink, old_dir->i_nlink); | |
ccd979bd MF |
1633 | } else { |
1634 | struct ocfs2_dinode *fe; | |
0cf2f763 JB |
1635 | status = ocfs2_journal_access_di(handle, |
1636 | INODE_CACHE(old_dir), | |
1637 | old_dir_bh, | |
1638 | OCFS2_JOURNAL_ACCESS_WRITE); | |
ccd979bd | 1639 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
198a1ca3 | 1640 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
ec20cec7 | 1641 | ocfs2_journal_dirty(handle, old_dir_bh); |
ccd979bd MF |
1642 | } |
1643 | } | |
379dfe9d | 1644 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
ccd979bd MF |
1645 | status = 0; |
1646 | bail: | |
ccd979bd | 1647 | if (handle) |
02dc1af4 | 1648 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 1649 | |
5098c27b MF |
1650 | if (orphan_dir) { |
1651 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
e63aecb6 | 1652 | ocfs2_inode_unlock(orphan_dir, 1); |
5955102c | 1653 | inode_unlock(orphan_dir); |
5098c27b MF |
1654 | iput(orphan_dir); |
1655 | } | |
1656 | ||
3cb2ec43 JQ |
1657 | if (new_child_locked) |
1658 | ocfs2_inode_unlock(new_inode, 1); | |
1659 | ||
1660 | if (old_child_locked) | |
1661 | ocfs2_inode_unlock(old_inode, 1); | |
1662 | ||
1663 | if (parents_locked) | |
1664 | ocfs2_double_unlock(old_dir, new_dir); | |
1665 | ||
1666 | if (rename_lock) | |
1667 | ocfs2_rename_unlock(osb); | |
1668 | ||
ccd979bd MF |
1669 | if (new_inode) |
1670 | sync_mapping_buffers(old_inode->i_mapping); | |
1671 | ||
72865d92 | 1672 | iput(new_inode); |
4a12ca3a MF |
1673 | |
1674 | ocfs2_free_dir_lookup_result(&target_lookup_res); | |
1675 | ocfs2_free_dir_lookup_result(&old_entry_lookup); | |
1676 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); | |
1677 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
1678 | ocfs2_free_dir_lookup_result(&target_insert); | |
1679 | ||
a81cb88b MF |
1680 | brelse(newfe_bh); |
1681 | brelse(old_inode_bh); | |
1682 | brelse(old_dir_bh); | |
1683 | brelse(new_dir_bh); | |
ccd979bd | 1684 | |
c1e8d35e TM |
1685 | if (status) |
1686 | mlog_errno(status); | |
ccd979bd MF |
1687 | |
1688 | return status; | |
1689 | } | |
1690 | ||
1691 | /* | |
1692 | * we expect i_size = strlen(symname). Copy symname into the file | |
1693 | * data, including the null terminator. | |
1694 | */ | |
1695 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, | |
1fabe148 | 1696 | handle_t *handle, |
ccd979bd MF |
1697 | struct inode *inode, |
1698 | const char *symname) | |
1699 | { | |
1700 | struct buffer_head **bhs = NULL; | |
1701 | const char *c; | |
1702 | struct super_block *sb = osb->sb; | |
4f902c37 | 1703 | u64 p_blkno, p_blocks; |
ccd979bd MF |
1704 | int virtual, blocks, status, i, bytes_left; |
1705 | ||
1706 | bytes_left = i_size_read(inode) + 1; | |
1707 | /* we can't trust i_blocks because we're actually going to | |
1708 | * write i_size + 1 bytes. */ | |
1709 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; | |
1710 | ||
8990e44a TM |
1711 | trace_ocfs2_create_symlink_data((unsigned long long)inode->i_blocks, |
1712 | i_size_read(inode), blocks); | |
ccd979bd MF |
1713 | |
1714 | /* Sanity check -- make sure we're going to fit. */ | |
1715 | if (bytes_left > | |
1716 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { | |
1717 | status = -EIO; | |
1718 | mlog_errno(status); | |
1719 | goto bail; | |
1720 | } | |
1721 | ||
1722 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); | |
1723 | if (!bhs) { | |
1724 | status = -ENOMEM; | |
1725 | mlog_errno(status); | |
1726 | goto bail; | |
1727 | } | |
1728 | ||
49cb8d2d MF |
1729 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
1730 | NULL); | |
ccd979bd MF |
1731 | if (status < 0) { |
1732 | mlog_errno(status); | |
1733 | goto bail; | |
1734 | } | |
1735 | ||
1736 | /* links can never be larger than one cluster so we know this | |
1737 | * is all going to be contiguous, but do a sanity check | |
1738 | * anyway. */ | |
1739 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { | |
1740 | status = -EIO; | |
1741 | mlog_errno(status); | |
1742 | goto bail; | |
1743 | } | |
1744 | ||
1745 | virtual = 0; | |
1746 | while(bytes_left > 0) { | |
1747 | c = &symname[virtual * sb->s_blocksize]; | |
1748 | ||
1749 | bhs[virtual] = sb_getblk(sb, p_blkno); | |
1750 | if (!bhs[virtual]) { | |
1751 | status = -ENOMEM; | |
1752 | mlog_errno(status); | |
1753 | goto bail; | |
1754 | } | |
8cb471e8 JB |
1755 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
1756 | bhs[virtual]); | |
ccd979bd | 1757 | |
0cf2f763 JB |
1758 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
1759 | bhs[virtual], | |
ccd979bd MF |
1760 | OCFS2_JOURNAL_ACCESS_CREATE); |
1761 | if (status < 0) { | |
1762 | mlog_errno(status); | |
1763 | goto bail; | |
1764 | } | |
1765 | ||
1766 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); | |
1767 | ||
1768 | memcpy(bhs[virtual]->b_data, c, | |
1769 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : | |
1770 | bytes_left); | |
1771 | ||
ec20cec7 | 1772 | ocfs2_journal_dirty(handle, bhs[virtual]); |
ccd979bd MF |
1773 | |
1774 | virtual++; | |
1775 | p_blkno++; | |
1776 | bytes_left -= sb->s_blocksize; | |
1777 | } | |
1778 | ||
1779 | status = 0; | |
1780 | bail: | |
1781 | ||
1782 | if (bhs) { | |
1783 | for(i = 0; i < blocks; i++) | |
a81cb88b | 1784 | brelse(bhs[i]); |
ccd979bd MF |
1785 | kfree(bhs); |
1786 | } | |
1787 | ||
c1e8d35e TM |
1788 | if (status) |
1789 | mlog_errno(status); | |
ccd979bd MF |
1790 | return status; |
1791 | } | |
1792 | ||
7a77db95 | 1793 | static int ocfs2_symlink(struct mnt_idmap *idmap, |
549c7297 | 1794 | struct inode *dir, |
ccd979bd MF |
1795 | struct dentry *dentry, |
1796 | const char *symname) | |
1797 | { | |
1798 | int status, l, credits; | |
1799 | u64 newsize; | |
1800 | struct ocfs2_super *osb = NULL; | |
1801 | struct inode *inode = NULL; | |
1802 | struct super_block *sb; | |
1803 | struct buffer_head *new_fe_bh = NULL; | |
ccd979bd MF |
1804 | struct buffer_head *parent_fe_bh = NULL; |
1805 | struct ocfs2_dinode *fe = NULL; | |
1806 | struct ocfs2_dinode *dirfe; | |
1fabe148 | 1807 | handle_t *handle = NULL; |
ccd979bd MF |
1808 | struct ocfs2_alloc_context *inode_ac = NULL; |
1809 | struct ocfs2_alloc_context *data_ac = NULL; | |
534eaddd TY |
1810 | struct ocfs2_alloc_context *xattr_ac = NULL; |
1811 | int want_clusters = 0; | |
1812 | int xattr_credits = 0; | |
1813 | struct ocfs2_security_xattr_info si = { | |
de3004c8 | 1814 | .name = NULL, |
534eaddd TY |
1815 | .enable = 1, |
1816 | }; | |
a90714c1 | 1817 | int did_quota = 0, did_quota_inode = 0; |
4a12ca3a | 1818 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
547ba7c8 JB |
1819 | sigset_t oldset; |
1820 | int did_block_signals = 0; | |
595297a8 | 1821 | struct ocfs2_dentry_lock *dl = NULL; |
ccd979bd | 1822 | |
8990e44a TM |
1823 | trace_ocfs2_symlink_begin(dir, dentry, symname, |
1824 | dentry->d_name.len, dentry->d_name.name); | |
ccd979bd | 1825 | |
9c89fe0a JK |
1826 | status = dquot_initialize(dir); |
1827 | if (status) { | |
1828 | mlog_errno(status); | |
1829 | goto bail; | |
1830 | } | |
907f4554 | 1831 | |
ccd979bd MF |
1832 | sb = dir->i_sb; |
1833 | osb = OCFS2_SB(sb); | |
1834 | ||
1835 | l = strlen(symname) + 1; | |
1836 | ||
1837 | credits = ocfs2_calc_symlink_credits(sb); | |
1838 | ||
ccd979bd | 1839 | /* lock the parent directory */ |
e63aecb6 | 1840 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
ccd979bd MF |
1841 | if (status < 0) { |
1842 | if (status != -ENOENT) | |
1843 | mlog_errno(status); | |
6d8fc40e | 1844 | return status; |
ccd979bd MF |
1845 | } |
1846 | ||
1847 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; | |
198a1ca3 | 1848 | if (!ocfs2_read_links_count(dirfe)) { |
ccd979bd MF |
1849 | /* can't make a file in a deleted directory. */ |
1850 | status = -ENOENT; | |
1851 | goto bail; | |
1852 | } | |
1853 | ||
1854 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
1855 | dentry->d_name.len); | |
1856 | if (status) | |
1857 | goto bail; | |
1858 | ||
1859 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, | |
1860 | dentry->d_name.name, | |
4a12ca3a | 1861 | dentry->d_name.len, &lookup); |
ccd979bd MF |
1862 | if (status < 0) { |
1863 | mlog_errno(status); | |
1864 | goto bail; | |
1865 | } | |
1866 | ||
da5cbf2f | 1867 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
ccd979bd MF |
1868 | if (status < 0) { |
1869 | if (status != -ENOSPC) | |
1870 | mlog_errno(status); | |
1871 | goto bail; | |
1872 | } | |
1873 | ||
f5d36202 | 1874 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
9c89fe0a JK |
1875 | if (IS_ERR(inode)) { |
1876 | status = PTR_ERR(inode); | |
1877 | inode = NULL; | |
f5d36202 TY |
1878 | mlog_errno(status); |
1879 | goto bail; | |
1880 | } | |
1881 | ||
534eaddd | 1882 | /* get security xattr */ |
2a7dba39 | 1883 | status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si); |
534eaddd TY |
1884 | if (status) { |
1885 | if (status == -EOPNOTSUPP) | |
1886 | si.enable = 0; | |
1887 | else { | |
1888 | mlog_errno(status); | |
1889 | goto bail; | |
1890 | } | |
1891 | } | |
1892 | ||
1893 | /* calculate meta data/clusters for setting security xattr */ | |
1894 | if (si.enable) { | |
1895 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, | |
1896 | &xattr_credits, &xattr_ac); | |
ccd979bd | 1897 | if (status < 0) { |
534eaddd | 1898 | mlog_errno(status); |
ccd979bd MF |
1899 | goto bail; |
1900 | } | |
1901 | } | |
1902 | ||
534eaddd TY |
1903 | /* don't reserve bitmap space for fast symlinks. */ |
1904 | if (l > ocfs2_fast_symlink_chars(sb)) | |
1905 | want_clusters += 1; | |
1906 | ||
1907 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); | |
1908 | if (status < 0) { | |
1909 | if (status != -ENOSPC) | |
1910 | mlog_errno(status); | |
1911 | goto bail; | |
1912 | } | |
1913 | ||
1914 | handle = ocfs2_start_trans(osb, credits + xattr_credits); | |
ccd979bd MF |
1915 | if (IS_ERR(handle)) { |
1916 | status = PTR_ERR(handle); | |
1917 | handle = NULL; | |
1918 | mlog_errno(status); | |
1919 | goto bail; | |
1920 | } | |
1921 | ||
547ba7c8 JB |
1922 | /* Starting to change things, restart is no longer possible. */ |
1923 | ocfs2_block_signals(&oldset); | |
1924 | did_block_signals = 1; | |
1925 | ||
63936dda CH |
1926 | status = dquot_alloc_inode(inode); |
1927 | if (status) | |
a90714c1 | 1928 | goto bail; |
a90714c1 JK |
1929 | did_quota_inode = 1; |
1930 | ||
8990e44a TM |
1931 | trace_ocfs2_symlink_create(dir, dentry, dentry->d_name.len, |
1932 | dentry->d_name.name, | |
1933 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
1934 | inode->i_mode); | |
19bd341f TM |
1935 | |
1936 | status = ocfs2_mknod_locked(osb, dir, inode, | |
f5d36202 TY |
1937 | 0, &new_fe_bh, parent_fe_bh, handle, |
1938 | inode_ac); | |
ccd979bd MF |
1939 | if (status < 0) { |
1940 | mlog_errno(status); | |
1941 | goto bail; | |
1942 | } | |
1943 | ||
1944 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; | |
1945 | inode->i_rdev = 0; | |
1946 | newsize = l - 1; | |
ea022dfb | 1947 | inode->i_op = &ocfs2_symlink_inode_operations; |
21fc61c7 | 1948 | inode_nohighmem(inode); |
ccd979bd | 1949 | if (l > ocfs2_fast_symlink_chars(sb)) { |
dcd0538f MF |
1950 | u32 offset = 0; |
1951 | ||
5dd4056d CH |
1952 | status = dquot_alloc_space_nodirty(inode, |
1953 | ocfs2_clusters_to_bytes(osb->sb, 1)); | |
1954 | if (status) | |
a90714c1 | 1955 | goto bail; |
a90714c1 | 1956 | did_quota = 1; |
ea022dfb | 1957 | inode->i_mapping->a_ops = &ocfs2_aops; |
0eb8d47e TM |
1958 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
1959 | new_fe_bh, | |
1960 | handle, data_ac, NULL, | |
1961 | NULL); | |
ccd979bd MF |
1962 | if (status < 0) { |
1963 | if (status != -ENOSPC && status != -EINTR) { | |
b0697053 MF |
1964 | mlog(ML_ERROR, |
1965 | "Failed to extend file to %llu\n", | |
1966 | (unsigned long long)newsize); | |
ccd979bd MF |
1967 | mlog_errno(status); |
1968 | status = -ENOSPC; | |
1969 | } | |
1970 | goto bail; | |
1971 | } | |
1972 | i_size_write(inode, newsize); | |
8110b073 | 1973 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd | 1974 | } else { |
ea022dfb | 1975 | inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops; |
ccd979bd MF |
1976 | memcpy((char *) fe->id2.i_symlink, symname, l); |
1977 | i_size_write(inode, newsize); | |
1978 | inode->i_blocks = 0; | |
1979 | } | |
1980 | ||
1981 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); | |
1982 | if (status < 0) { | |
1983 | mlog_errno(status); | |
1984 | goto bail; | |
1985 | } | |
1986 | ||
1987 | if (!ocfs2_inode_is_fast_symlink(inode)) { | |
1988 | status = ocfs2_create_symlink_data(osb, handle, inode, | |
1989 | symname); | |
1990 | if (status < 0) { | |
1991 | mlog_errno(status); | |
1992 | goto bail; | |
1993 | } | |
1994 | } | |
1995 | ||
534eaddd TY |
1996 | if (si.enable) { |
1997 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, | |
1998 | xattr_ac, data_ac); | |
1999 | if (status < 0) { | |
2000 | mlog_errno(status); | |
2001 | goto bail; | |
2002 | } | |
2003 | } | |
2004 | ||
a9743fcd MF |
2005 | /* |
2006 | * Do this before adding the entry to the directory. We add | |
2007 | * also set d_op after success so that ->d_iput() will cleanup | |
2008 | * the dentry lock even if ocfs2_add_entry() fails below. | |
2009 | */ | |
2010 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); | |
2011 | if (status) { | |
ccd979bd MF |
2012 | mlog_errno(status); |
2013 | goto bail; | |
2014 | } | |
2015 | ||
595297a8 | 2016 | dl = dentry->d_fsdata; |
2017 | ||
a9743fcd MF |
2018 | status = ocfs2_add_entry(handle, dentry, inode, |
2019 | le64_to_cpu(fe->i_blkno), parent_fe_bh, | |
2020 | &lookup); | |
2021 | if (status < 0) { | |
379dfe9d MF |
2022 | mlog_errno(status); |
2023 | goto bail; | |
2024 | } | |
2025 | ||
ccd979bd | 2026 | insert_inode_hash(inode); |
ccd979bd MF |
2027 | d_instantiate(dentry, inode); |
2028 | bail: | |
a90714c1 | 2029 | if (status < 0 && did_quota) |
5dd4056d | 2030 | dquot_free_space_nodirty(inode, |
a90714c1 JK |
2031 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
2032 | if (status < 0 && did_quota_inode) | |
63936dda | 2033 | dquot_free_inode(inode); |
28f4821b JQ |
2034 | if (handle) { |
2035 | if (status < 0 && fe) | |
2036 | ocfs2_set_links_count(fe, 0); | |
02dc1af4 | 2037 | ocfs2_commit_trans(osb, handle); |
28f4821b | 2038 | } |
6d8fc40e | 2039 | |
e63aecb6 | 2040 | ocfs2_inode_unlock(dir, 1); |
547ba7c8 JB |
2041 | if (did_block_signals) |
2042 | ocfs2_unblock_signals(&oldset); | |
6d8fc40e | 2043 | |
a81cb88b MF |
2044 | brelse(new_fe_bh); |
2045 | brelse(parent_fe_bh); | |
534eaddd | 2046 | kfree(si.value); |
4a12ca3a | 2047 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd MF |
2048 | if (inode_ac) |
2049 | ocfs2_free_alloc_context(inode_ac); | |
2050 | if (data_ac) | |
2051 | ocfs2_free_alloc_context(data_ac); | |
534eaddd TY |
2052 | if (xattr_ac) |
2053 | ocfs2_free_alloc_context(xattr_ac); | |
f5d36202 | 2054 | if ((status < 0) && inode) { |
595297a8 | 2055 | if (dl) |
2056 | ocfs2_cleanup_add_entry_failure(osb, dentry, inode); | |
2057 | ||
ab41fdc8 | 2058 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
f5d36202 | 2059 | clear_nlink(inode); |
ccd979bd | 2060 | iput(inode); |
f5d36202 | 2061 | } |
ccd979bd | 2062 | |
c1e8d35e TM |
2063 | if (status) |
2064 | mlog_errno(status); | |
ccd979bd MF |
2065 | |
2066 | return status; | |
2067 | } | |
2068 | ||
ccd979bd MF |
2069 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
2070 | { | |
2071 | int status, namelen; | |
2072 | ||
b0697053 MF |
2073 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
2074 | (long long)blkno); | |
ccd979bd MF |
2075 | if (namelen <= 0) { |
2076 | if (namelen) | |
2077 | status = namelen; | |
2078 | else | |
2079 | status = -EINVAL; | |
2080 | mlog_errno(status); | |
2081 | goto bail; | |
2082 | } | |
2083 | if (namelen != OCFS2_ORPHAN_NAMELEN) { | |
2084 | status = -EINVAL; | |
2085 | mlog_errno(status); | |
2086 | goto bail; | |
2087 | } | |
2088 | ||
8990e44a | 2089 | trace_ocfs2_blkno_stringify(blkno, name, namelen); |
ccd979bd MF |
2090 | |
2091 | status = 0; | |
2092 | bail: | |
c1e8d35e TM |
2093 | if (status < 0) |
2094 | mlog_errno(status); | |
ccd979bd MF |
2095 | return status; |
2096 | } | |
2097 | ||
dd43bcde MF |
2098 | static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb, |
2099 | struct inode **ret_orphan_dir, | |
2100 | struct buffer_head **ret_orphan_dir_bh) | |
ccd979bd | 2101 | { |
5098c27b | 2102 | struct inode *orphan_dir_inode; |
ccd979bd | 2103 | struct buffer_head *orphan_dir_bh = NULL; |
dd43bcde | 2104 | int ret = 0; |
ccd979bd MF |
2105 | |
2106 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2107 | ORPHAN_DIR_SYSTEM_INODE, | |
2108 | osb->slot_num); | |
2109 | if (!orphan_dir_inode) { | |
dd43bcde MF |
2110 | ret = -ENOENT; |
2111 | mlog_errno(ret); | |
2112 | return ret; | |
ccd979bd MF |
2113 | } |
2114 | ||
5955102c | 2115 | inode_lock(orphan_dir_inode); |
5098c27b | 2116 | |
dd43bcde MF |
2117 | ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2118 | if (ret < 0) { | |
5955102c | 2119 | inode_unlock(orphan_dir_inode); |
dd43bcde MF |
2120 | iput(orphan_dir_inode); |
2121 | ||
2122 | mlog_errno(ret); | |
2123 | return ret; | |
ccd979bd MF |
2124 | } |
2125 | ||
dd43bcde MF |
2126 | *ret_orphan_dir = orphan_dir_inode; |
2127 | *ret_orphan_dir_bh = orphan_dir_bh; | |
5098c27b | 2128 | |
dd43bcde MF |
2129 | return 0; |
2130 | } | |
2131 | ||
2132 | static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode, | |
2133 | struct buffer_head *orphan_dir_bh, | |
2134 | u64 blkno, | |
2135 | char *name, | |
06ee5c75 JQ |
2136 | struct ocfs2_dir_lookup_result *lookup, |
2137 | bool dio) | |
dd43bcde MF |
2138 | { |
2139 | int ret; | |
2140 | struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb); | |
06ee5c75 JQ |
2141 | int namelen = dio ? |
2142 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2143 | OCFS2_ORPHAN_NAMELEN; | |
2144 | ||
2145 | if (dio) { | |
2146 | ret = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2147 | OCFS2_DIO_ORPHAN_PREFIX); | |
2148 | if (ret != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2149 | ret = -EINVAL; | |
2150 | mlog_errno(ret); | |
2151 | return ret; | |
2152 | } | |
dd43bcde | 2153 | |
06ee5c75 JQ |
2154 | ret = ocfs2_blkno_stringify(blkno, |
2155 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2156 | } else | |
2157 | ret = ocfs2_blkno_stringify(blkno, name); | |
dd43bcde MF |
2158 | if (ret < 0) { |
2159 | mlog_errno(ret); | |
2160 | return ret; | |
2161 | } | |
2162 | ||
2163 | ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, | |
2164 | orphan_dir_bh, name, | |
06ee5c75 | 2165 | namelen, lookup); |
dd43bcde MF |
2166 | if (ret < 0) { |
2167 | mlog_errno(ret); | |
2168 | return ret; | |
2169 | } | |
2170 | ||
2171 | return 0; | |
2172 | } | |
2173 | ||
2174 | /** | |
2175 | * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for | |
2176 | * insertion of an orphan. | |
2177 | * @osb: ocfs2 file system | |
2178 | * @ret_orphan_dir: Orphan dir inode - returned locked! | |
2179 | * @blkno: Actual block number of the inode to be inserted into orphan dir. | |
2180 | * @lookup: dir lookup result, to be passed back into functions like | |
2181 | * ocfs2_orphan_add | |
2182 | * | |
2183 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2184 | * fields will be populated. | |
2185 | * | |
2186 | * Returns non-zero on failure. | |
2187 | */ | |
2188 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, | |
2189 | struct inode **ret_orphan_dir, | |
2190 | u64 blkno, | |
2191 | char *name, | |
06ee5c75 JQ |
2192 | struct ocfs2_dir_lookup_result *lookup, |
2193 | bool dio) | |
dd43bcde MF |
2194 | { |
2195 | struct inode *orphan_dir_inode = NULL; | |
2196 | struct buffer_head *orphan_dir_bh = NULL; | |
2197 | int ret = 0; | |
2198 | ||
2199 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode, | |
2200 | &orphan_dir_bh); | |
2201 | if (ret < 0) { | |
2202 | mlog_errno(ret); | |
2203 | return ret; | |
2204 | } | |
2205 | ||
2206 | ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh, | |
06ee5c75 | 2207 | blkno, name, lookup, dio); |
dd43bcde MF |
2208 | if (ret < 0) { |
2209 | mlog_errno(ret); | |
2210 | goto out; | |
ccd979bd MF |
2211 | } |
2212 | ||
5098c27b MF |
2213 | *ret_orphan_dir = orphan_dir_inode; |
2214 | ||
dd43bcde MF |
2215 | out: |
2216 | brelse(orphan_dir_bh); | |
2217 | ||
2218 | if (ret) { | |
2219 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2220 | inode_unlock(orphan_dir_inode); |
ccd979bd | 2221 | iput(orphan_dir_inode); |
5098c27b | 2222 | } |
ccd979bd | 2223 | |
c1e8d35e TM |
2224 | if (ret) |
2225 | mlog_errno(ret); | |
dd43bcde | 2226 | return ret; |
ccd979bd MF |
2227 | } |
2228 | ||
2229 | static int ocfs2_orphan_add(struct ocfs2_super *osb, | |
1fabe148 | 2230 | handle_t *handle, |
ccd979bd | 2231 | struct inode *inode, |
3939fda4 | 2232 | struct buffer_head *fe_bh, |
ccd979bd | 2233 | char *name, |
4a12ca3a | 2234 | struct ocfs2_dir_lookup_result *lookup, |
06ee5c75 JQ |
2235 | struct inode *orphan_dir_inode, |
2236 | bool dio) | |
ccd979bd | 2237 | { |
ccd979bd MF |
2238 | struct buffer_head *orphan_dir_bh = NULL; |
2239 | int status = 0; | |
2240 | struct ocfs2_dinode *orphan_fe; | |
3939fda4 | 2241 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; |
06ee5c75 JQ |
2242 | int namelen = dio ? |
2243 | (OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN) : | |
2244 | OCFS2_ORPHAN_NAMELEN; | |
ccd979bd | 2245 | |
8990e44a TM |
2246 | trace_ocfs2_orphan_add_begin( |
2247 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 2248 | |
b657c95c | 2249 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
ccd979bd MF |
2250 | if (status < 0) { |
2251 | mlog_errno(status); | |
2252 | goto leave; | |
2253 | } | |
2254 | ||
0cf2f763 JB |
2255 | status = ocfs2_journal_access_di(handle, |
2256 | INODE_CACHE(orphan_dir_inode), | |
2257 | orphan_dir_bh, | |
13723d00 | 2258 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
2259 | if (status < 0) { |
2260 | mlog_errno(status); | |
2261 | goto leave; | |
2262 | } | |
2263 | ||
ea45466a YL |
2264 | /* |
2265 | * We're going to journal the change of i_flags and i_orphaned_slot. | |
2266 | * It's safe anyway, though some callers may duplicate the journaling. | |
2267 | * Journaling within the func just make the logic look more | |
2268 | * straightforward. | |
2269 | */ | |
2270 | status = ocfs2_journal_access_di(handle, | |
2271 | INODE_CACHE(inode), | |
2272 | fe_bh, | |
2273 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2274 | if (status < 0) { | |
2275 | mlog_errno(status); | |
2276 | goto leave; | |
2277 | } | |
2278 | ||
ccd979bd MF |
2279 | /* we're a cluster, and nlink can change on disk from |
2280 | * underneath us... */ | |
2281 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2282 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2283 | ocfs2_add_links_count(orphan_fe, 1); |
bfe86848 | 2284 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2285 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2286 | |
2287 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, | |
06ee5c75 | 2288 | namelen, inode, |
ccd979bd | 2289 | OCFS2_I(inode)->ip_blkno, |
4a12ca3a | 2290 | orphan_dir_bh, lookup); |
ccd979bd MF |
2291 | if (status < 0) { |
2292 | mlog_errno(status); | |
ea45466a | 2293 | goto rollback; |
3939fda4 TY |
2294 | } |
2295 | ||
06ee5c75 JQ |
2296 | if (dio) { |
2297 | /* Update flag OCFS2_DIO_ORPHANED_FL and record the orphan | |
2298 | * slot. | |
2299 | */ | |
2300 | fe->i_flags |= cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2301 | fe->i_dio_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2302 | } else { | |
2303 | fe->i_flags |= cpu_to_le32(OCFS2_ORPHANED_FL); | |
2304 | OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR; | |
ccd979bd | 2305 | |
06ee5c75 JQ |
2306 | /* Record which orphan dir our inode now resides |
2307 | * in. delete_inode will use this to determine which orphan | |
2308 | * dir to lock. */ | |
2309 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); | |
2310 | } | |
ccd979bd | 2311 | |
3939fda4 TY |
2312 | ocfs2_journal_dirty(handle, fe_bh); |
2313 | ||
8990e44a TM |
2314 | trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno, |
2315 | osb->slot_num); | |
ccd979bd | 2316 | |
ea45466a YL |
2317 | rollback: |
2318 | if (status < 0) { | |
2319 | if (S_ISDIR(inode->i_mode)) | |
2320 | ocfs2_add_links_count(orphan_fe, -1); | |
2321 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); | |
2322 | } | |
2323 | ||
ccd979bd | 2324 | leave: |
a81cb88b | 2325 | brelse(orphan_dir_bh); |
ccd979bd | 2326 | |
ccd979bd MF |
2327 | return status; |
2328 | } | |
2329 | ||
2330 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ | |
2331 | int ocfs2_orphan_del(struct ocfs2_super *osb, | |
1fabe148 | 2332 | handle_t *handle, |
ccd979bd MF |
2333 | struct inode *orphan_dir_inode, |
2334 | struct inode *inode, | |
06ee5c75 JQ |
2335 | struct buffer_head *orphan_dir_bh, |
2336 | bool dio) | |
ccd979bd | 2337 | { |
64202a21 | 2338 | char name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1]; |
ccd979bd MF |
2339 | struct ocfs2_dinode *orphan_fe; |
2340 | int status = 0; | |
4a12ca3a | 2341 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
ccd979bd | 2342 | |
06ee5c75 JQ |
2343 | if (dio) { |
2344 | status = snprintf(name, OCFS2_DIO_ORPHAN_PREFIX_LEN + 1, "%s", | |
2345 | OCFS2_DIO_ORPHAN_PREFIX); | |
2346 | if (status != OCFS2_DIO_ORPHAN_PREFIX_LEN) { | |
2347 | status = -EINVAL; | |
2348 | mlog_errno(status); | |
2349 | return status; | |
2350 | } | |
2351 | ||
2352 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, | |
2353 | name + OCFS2_DIO_ORPHAN_PREFIX_LEN); | |
2354 | } else | |
2355 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); | |
ccd979bd MF |
2356 | if (status < 0) { |
2357 | mlog_errno(status); | |
2358 | goto leave; | |
2359 | } | |
2360 | ||
8990e44a TM |
2361 | trace_ocfs2_orphan_del( |
2362 | (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, | |
e38a5739 | 2363 | name, strlen(name)); |
ccd979bd | 2364 | |
074a6c65 JQ |
2365 | status = ocfs2_journal_access_di(handle, |
2366 | INODE_CACHE(orphan_dir_inode), | |
2367 | orphan_dir_bh, | |
2368 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2369 | if (status < 0) { | |
2370 | mlog_errno(status); | |
2371 | goto leave; | |
2372 | } | |
2373 | ||
ccd979bd | 2374 | /* find it's spot in the orphan directory */ |
e38a5739 | 2375 | status = ocfs2_find_entry(name, strlen(name), orphan_dir_inode, |
4a12ca3a MF |
2376 | &lookup); |
2377 | if (status) { | |
ccd979bd MF |
2378 | mlog_errno(status); |
2379 | goto leave; | |
2380 | } | |
2381 | ||
2382 | /* remove it from the orphan directory */ | |
4a12ca3a | 2383 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
ccd979bd MF |
2384 | if (status < 0) { |
2385 | mlog_errno(status); | |
2386 | goto leave; | |
2387 | } | |
2388 | ||
ccd979bd MF |
2389 | /* do the i_nlink dance! :) */ |
2390 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; | |
2391 | if (S_ISDIR(inode->i_mode)) | |
198a1ca3 | 2392 | ocfs2_add_links_count(orphan_fe, -1); |
bfe86848 | 2393 | set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe)); |
ec20cec7 | 2394 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
ccd979bd MF |
2395 | |
2396 | leave: | |
4a12ca3a | 2397 | ocfs2_free_dir_lookup_result(&lookup); |
ccd979bd | 2398 | |
c1e8d35e TM |
2399 | if (status) |
2400 | mlog_errno(status); | |
ccd979bd MF |
2401 | return status; |
2402 | } | |
2403 | ||
97b8f4a9 | 2404 | /** |
25985edc | 2405 | * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to receive a newly |
97b8f4a9 MF |
2406 | * allocated file. This is different from the typical 'add to orphan dir' |
2407 | * operation in that the inode does not yet exist. This is a problem because | |
2408 | * the orphan dir stringifies the inode block number to come up with it's | |
2409 | * dirent. Obviously if the inode does not yet exist we have a chicken and egg | |
2410 | * problem. This function works around it by calling deeper into the orphan | |
2411 | * and suballoc code than other callers. Use this only by necessity. | |
2412 | * @dir: The directory which this inode will ultimately wind up under - not the | |
2413 | * orphan dir! | |
2414 | * @dir_bh: buffer_head the @dir inode block | |
2415 | * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled | |
2416 | * with the string to be used for orphan dirent. Pass back to the orphan dir | |
2417 | * code. | |
2418 | * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan | |
2419 | * dir code. | |
2420 | * @ret_di_blkno: block number where the new inode will be allocated. | |
2421 | * @orphan_insert: Dir insert context to be passed back into orphan dir code. | |
2422 | * @ret_inode_ac: Inode alloc context to be passed back to the allocator. | |
2423 | * | |
2424 | * Returns zero on success and the ret_orphan_dir, name and lookup | |
2425 | * fields will be populated. | |
2426 | * | |
2427 | * Returns non-zero on failure. | |
2428 | */ | |
2429 | static int ocfs2_prep_new_orphaned_file(struct inode *dir, | |
2430 | struct buffer_head *dir_bh, | |
2431 | char *orphan_name, | |
2432 | struct inode **ret_orphan_dir, | |
2433 | u64 *ret_di_blkno, | |
2434 | struct ocfs2_dir_lookup_result *orphan_insert, | |
2435 | struct ocfs2_alloc_context **ret_inode_ac) | |
2436 | { | |
2437 | int ret; | |
2438 | u64 di_blkno; | |
2439 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2440 | struct inode *orphan_dir = NULL; | |
2441 | struct buffer_head *orphan_dir_bh = NULL; | |
2442 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2443 | ||
2444 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh); | |
2445 | if (ret < 0) { | |
2446 | mlog_errno(ret); | |
2447 | return ret; | |
2448 | } | |
2449 | ||
2450 | /* reserve an inode spot */ | |
2451 | ret = ocfs2_reserve_new_inode(osb, &inode_ac); | |
2452 | if (ret < 0) { | |
2453 | if (ret != -ENOSPC) | |
2454 | mlog_errno(ret); | |
2455 | goto out; | |
2456 | } | |
2457 | ||
2458 | ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac, | |
2459 | &di_blkno); | |
2460 | if (ret) { | |
2461 | mlog_errno(ret); | |
2462 | goto out; | |
2463 | } | |
2464 | ||
2465 | ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh, | |
06ee5c75 JQ |
2466 | di_blkno, orphan_name, orphan_insert, |
2467 | false); | |
97b8f4a9 MF |
2468 | if (ret < 0) { |
2469 | mlog_errno(ret); | |
2470 | goto out; | |
2471 | } | |
2472 | ||
2473 | out: | |
2474 | if (ret == 0) { | |
2475 | *ret_orphan_dir = orphan_dir; | |
2476 | *ret_di_blkno = di_blkno; | |
2477 | *ret_inode_ac = inode_ac; | |
2478 | /* | |
2479 | * orphan_name and orphan_insert are already up to | |
2480 | * date via prepare_orphan_dir | |
2481 | */ | |
2482 | } else { | |
2483 | /* Unroll reserve_new_inode* */ | |
2484 | if (inode_ac) | |
2485 | ocfs2_free_alloc_context(inode_ac); | |
2486 | ||
2487 | /* Unroll orphan dir locking */ | |
5955102c | 2488 | inode_unlock(orphan_dir); |
97b8f4a9 MF |
2489 | ocfs2_inode_unlock(orphan_dir, 1); |
2490 | iput(orphan_dir); | |
2491 | } | |
2492 | ||
2493 | brelse(orphan_dir_bh); | |
2494 | ||
7869e590 | 2495 | return ret; |
97b8f4a9 MF |
2496 | } |
2497 | ||
bc13d347 TM |
2498 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
2499 | int mode, | |
2500 | struct inode **new_inode) | |
2501 | { | |
2502 | int status, did_quota_inode = 0; | |
2503 | struct inode *inode = NULL; | |
2504 | struct inode *orphan_dir = NULL; | |
2505 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
bc13d347 TM |
2506 | handle_t *handle = NULL; |
2507 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; | |
2508 | struct buffer_head *parent_di_bh = NULL; | |
2509 | struct buffer_head *new_di_bh = NULL; | |
2510 | struct ocfs2_alloc_context *inode_ac = NULL; | |
2511 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
3f649ab7 | 2512 | u64 di_blkno, suballoc_loc; |
97b8f4a9 | 2513 | u16 suballoc_bit; |
bc13d347 TM |
2514 | |
2515 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2516 | if (status < 0) { | |
2517 | if (status != -ENOENT) | |
2518 | mlog_errno(status); | |
2519 | return status; | |
2520 | } | |
2521 | ||
97b8f4a9 MF |
2522 | status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh, |
2523 | orphan_name, &orphan_dir, | |
2524 | &di_blkno, &orphan_insert, &inode_ac); | |
bc13d347 TM |
2525 | if (status < 0) { |
2526 | if (status != -ENOSPC) | |
2527 | mlog_errno(status); | |
2528 | goto leave; | |
2529 | } | |
2530 | ||
2531 | inode = ocfs2_get_init_inode(dir, mode); | |
9c89fe0a JK |
2532 | if (IS_ERR(inode)) { |
2533 | status = PTR_ERR(inode); | |
2534 | inode = NULL; | |
bc13d347 TM |
2535 | mlog_errno(status); |
2536 | goto leave; | |
2537 | } | |
2538 | ||
2539 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); | |
2540 | if (IS_ERR(handle)) { | |
2541 | status = PTR_ERR(handle); | |
2542 | handle = NULL; | |
2543 | mlog_errno(status); | |
2544 | goto leave; | |
2545 | } | |
2546 | ||
63936dda CH |
2547 | status = dquot_alloc_inode(inode); |
2548 | if (status) | |
bc13d347 | 2549 | goto leave; |
bc13d347 TM |
2550 | did_quota_inode = 1; |
2551 | ||
97b8f4a9 MF |
2552 | status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac, |
2553 | &suballoc_loc, | |
2554 | &suballoc_bit, di_blkno); | |
bc13d347 TM |
2555 | if (status < 0) { |
2556 | mlog_errno(status); | |
2557 | goto leave; | |
2558 | } | |
2559 | ||
6d6b77f1 | 2560 | clear_nlink(inode); |
97b8f4a9 MF |
2561 | /* do the real work now. */ |
2562 | status = __ocfs2_mknod_locked(dir, inode, | |
2563 | 0, &new_di_bh, parent_di_bh, handle, | |
2564 | inode_ac, di_blkno, suballoc_loc, | |
2565 | suballoc_bit); | |
bc13d347 TM |
2566 | if (status < 0) { |
2567 | mlog_errno(status); | |
2568 | goto leave; | |
2569 | } | |
2570 | ||
3939fda4 | 2571 | status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name, |
06ee5c75 | 2572 | &orphan_insert, orphan_dir, false); |
bc13d347 TM |
2573 | if (status < 0) { |
2574 | mlog_errno(status); | |
2575 | goto leave; | |
2576 | } | |
2577 | ||
2578 | /* get open lock so that only nodes can't remove it from orphan dir. */ | |
2579 | status = ocfs2_open_lock(inode); | |
2580 | if (status < 0) | |
2581 | mlog_errno(status); | |
2582 | ||
c7d260af | 2583 | insert_inode_hash(inode); |
bc13d347 TM |
2584 | leave: |
2585 | if (status < 0 && did_quota_inode) | |
63936dda | 2586 | dquot_free_inode(inode); |
bc13d347 TM |
2587 | if (handle) |
2588 | ocfs2_commit_trans(osb, handle); | |
2589 | ||
2590 | if (orphan_dir) { | |
2591 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ | |
2592 | ocfs2_inode_unlock(orphan_dir, 1); | |
5955102c | 2593 | inode_unlock(orphan_dir); |
bc13d347 TM |
2594 | iput(orphan_dir); |
2595 | } | |
2596 | ||
bc13d347 TM |
2597 | if ((status < 0) && inode) { |
2598 | clear_nlink(inode); | |
2599 | iput(inode); | |
2600 | } | |
2601 | ||
2602 | if (inode_ac) | |
2603 | ocfs2_free_alloc_context(inode_ac); | |
2604 | ||
2605 | brelse(new_di_bh); | |
2606 | ||
2607 | if (!status) | |
2608 | *new_inode = inode; | |
2609 | ||
2610 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2611 | ||
2612 | ocfs2_inode_unlock(dir, 1); | |
2613 | brelse(parent_di_bh); | |
2614 | return status; | |
2615 | } | |
2616 | ||
06ee5c75 JQ |
2617 | int ocfs2_add_inode_to_orphan(struct ocfs2_super *osb, |
2618 | struct inode *inode) | |
2619 | { | |
2620 | char orphan_name[OCFS2_DIO_ORPHAN_PREFIX_LEN + OCFS2_ORPHAN_NAMELEN + 1]; | |
2621 | struct inode *orphan_dir_inode = NULL; | |
2622 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; | |
2623 | struct buffer_head *di_bh = NULL; | |
2624 | int status = 0; | |
2625 | handle_t *handle = NULL; | |
4813962b | 2626 | struct ocfs2_dinode *di = NULL; |
06ee5c75 JQ |
2627 | |
2628 | status = ocfs2_inode_lock(inode, &di_bh, 1); | |
2629 | if (status < 0) { | |
2630 | mlog_errno(status); | |
2631 | goto bail; | |
2632 | } | |
2633 | ||
4813962b JQ |
2634 | di = (struct ocfs2_dinode *) di_bh->b_data; |
2635 | /* | |
2636 | * Another append dio crashed? | |
512f62ac | 2637 | * If so, manually recover it first. |
4813962b JQ |
2638 | */ |
2639 | if (unlikely(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))) { | |
512f62ac JQ |
2640 | status = ocfs2_truncate_file(inode, di_bh, i_size_read(inode)); |
2641 | if (status < 0) { | |
2642 | if (status != -ENOSPC) | |
2643 | mlog_errno(status); | |
2644 | goto bail_unlock_inode; | |
2645 | } | |
2646 | ||
2647 | status = ocfs2_del_inode_from_orphan(osb, inode, di_bh, 0, 0); | |
2648 | if (status < 0) { | |
2649 | mlog_errno(status); | |
2650 | goto bail_unlock_inode; | |
2651 | } | |
4813962b JQ |
2652 | } |
2653 | ||
06ee5c75 JQ |
2654 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir_inode, |
2655 | OCFS2_I(inode)->ip_blkno, | |
2656 | orphan_name, | |
2657 | &orphan_insert, | |
2658 | true); | |
2659 | if (status < 0) { | |
2660 | mlog_errno(status); | |
2661 | goto bail_unlock_inode; | |
2662 | } | |
2663 | ||
2664 | handle = ocfs2_start_trans(osb, | |
2665 | OCFS2_INODE_ADD_TO_ORPHAN_CREDITS); | |
2666 | if (IS_ERR(handle)) { | |
2667 | status = PTR_ERR(handle); | |
2668 | goto bail_unlock_orphan; | |
2669 | } | |
2670 | ||
2671 | status = ocfs2_orphan_add(osb, handle, inode, di_bh, orphan_name, | |
2672 | &orphan_insert, orphan_dir_inode, true); | |
2673 | if (status) | |
2674 | mlog_errno(status); | |
2675 | ||
2676 | ocfs2_commit_trans(osb, handle); | |
2677 | ||
2678 | bail_unlock_orphan: | |
2679 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2680 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2681 | iput(orphan_dir_inode); |
2682 | ||
2683 | ocfs2_free_dir_lookup_result(&orphan_insert); | |
2684 | ||
2685 | bail_unlock_inode: | |
2686 | ocfs2_inode_unlock(inode, 1); | |
2687 | brelse(di_bh); | |
2688 | ||
2689 | bail: | |
2690 | return status; | |
2691 | } | |
2692 | ||
2693 | int ocfs2_del_inode_from_orphan(struct ocfs2_super *osb, | |
cf1776a9 JQ |
2694 | struct inode *inode, struct buffer_head *di_bh, |
2695 | int update_isize, loff_t end) | |
06ee5c75 JQ |
2696 | { |
2697 | struct inode *orphan_dir_inode = NULL; | |
2698 | struct buffer_head *orphan_dir_bh = NULL; | |
cf1776a9 | 2699 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data; |
06ee5c75 JQ |
2700 | handle_t *handle = NULL; |
2701 | int status = 0; | |
2702 | ||
06ee5c75 JQ |
2703 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
2704 | ORPHAN_DIR_SYSTEM_INODE, | |
2705 | le16_to_cpu(di->i_dio_orphaned_slot)); | |
2706 | if (!orphan_dir_inode) { | |
2707 | status = -ENOENT; | |
2708 | mlog_errno(status); | |
cf1776a9 | 2709 | goto bail; |
06ee5c75 JQ |
2710 | } |
2711 | ||
5955102c | 2712 | inode_lock(orphan_dir_inode); |
06ee5c75 JQ |
2713 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
2714 | if (status < 0) { | |
5955102c | 2715 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2716 | iput(orphan_dir_inode); |
2717 | mlog_errno(status); | |
cf1776a9 | 2718 | goto bail; |
06ee5c75 JQ |
2719 | } |
2720 | ||
2721 | handle = ocfs2_start_trans(osb, | |
2722 | OCFS2_INODE_DEL_FROM_ORPHAN_CREDITS); | |
2723 | if (IS_ERR(handle)) { | |
2724 | status = PTR_ERR(handle); | |
2725 | goto bail_unlock_orphan; | |
2726 | } | |
2727 | ||
2728 | BUG_ON(!(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))); | |
2729 | ||
2730 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, | |
2731 | inode, orphan_dir_bh, true); | |
2732 | if (status < 0) { | |
2733 | mlog_errno(status); | |
2734 | goto bail_commit; | |
2735 | } | |
2736 | ||
2737 | status = ocfs2_journal_access_di(handle, | |
2738 | INODE_CACHE(inode), | |
2739 | di_bh, | |
2740 | OCFS2_JOURNAL_ACCESS_WRITE); | |
2741 | if (status < 0) { | |
2742 | mlog_errno(status); | |
2743 | goto bail_commit; | |
2744 | } | |
2745 | ||
2746 | di->i_flags &= ~cpu_to_le32(OCFS2_DIO_ORPHANED_FL); | |
2747 | di->i_dio_orphaned_slot = 0; | |
2748 | ||
2749 | if (update_isize) { | |
2750 | status = ocfs2_set_inode_size(handle, inode, di_bh, end); | |
2751 | if (status) | |
2752 | mlog_errno(status); | |
2753 | } else | |
2754 | ocfs2_journal_dirty(handle, di_bh); | |
2755 | ||
2756 | bail_commit: | |
2757 | ocfs2_commit_trans(osb, handle); | |
2758 | ||
2759 | bail_unlock_orphan: | |
2760 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2761 | inode_unlock(orphan_dir_inode); |
06ee5c75 JQ |
2762 | brelse(orphan_dir_bh); |
2763 | iput(orphan_dir_inode); | |
2764 | ||
06ee5c75 JQ |
2765 | bail: |
2766 | return status; | |
2767 | } | |
2768 | ||
bc13d347 TM |
2769 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, |
2770 | struct inode *inode, | |
2771 | struct dentry *dentry) | |
2772 | { | |
2773 | int status = 0; | |
2774 | struct buffer_head *parent_di_bh = NULL; | |
2775 | handle_t *handle = NULL; | |
2776 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); | |
2777 | struct ocfs2_dinode *dir_di, *di; | |
2778 | struct inode *orphan_dir_inode = NULL; | |
2779 | struct buffer_head *orphan_dir_bh = NULL; | |
2780 | struct buffer_head *di_bh = NULL; | |
2781 | struct ocfs2_dir_lookup_result lookup = { NULL, }; | |
2782 | ||
8990e44a TM |
2783 | trace_ocfs2_mv_orphaned_inode_to_new(dir, dentry, |
2784 | dentry->d_name.len, dentry->d_name.name, | |
2785 | (unsigned long long)OCFS2_I(dir)->ip_blkno, | |
2786 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
bc13d347 TM |
2787 | |
2788 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); | |
2789 | if (status < 0) { | |
2790 | if (status != -ENOENT) | |
2791 | mlog_errno(status); | |
2792 | return status; | |
2793 | } | |
2794 | ||
2795 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; | |
2796 | if (!dir_di->i_links_count) { | |
2797 | /* can't make a file in a deleted directory. */ | |
2798 | status = -ENOENT; | |
2799 | goto leave; | |
2800 | } | |
2801 | ||
2802 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, | |
2803 | dentry->d_name.len); | |
2804 | if (status) | |
2805 | goto leave; | |
2806 | ||
2807 | /* get a spot inside the dir. */ | |
2808 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, | |
2809 | dentry->d_name.name, | |
2810 | dentry->d_name.len, &lookup); | |
2811 | if (status < 0) { | |
2812 | mlog_errno(status); | |
2813 | goto leave; | |
2814 | } | |
2815 | ||
2816 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, | |
2817 | ORPHAN_DIR_SYSTEM_INODE, | |
2818 | osb->slot_num); | |
2819 | if (!orphan_dir_inode) { | |
62f8b1f0 | 2820 | status = -ENOENT; |
bc13d347 TM |
2821 | mlog_errno(status); |
2822 | goto leave; | |
2823 | } | |
2824 | ||
5955102c | 2825 | inode_lock(orphan_dir_inode); |
bc13d347 TM |
2826 | |
2827 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
2828 | if (status < 0) { | |
2829 | mlog_errno(status); | |
5955102c | 2830 | inode_unlock(orphan_dir_inode); |
bc13d347 TM |
2831 | iput(orphan_dir_inode); |
2832 | goto leave; | |
2833 | } | |
2834 | ||
2835 | status = ocfs2_read_inode_block(inode, &di_bh); | |
2836 | if (status < 0) { | |
2837 | mlog_errno(status); | |
2838 | goto orphan_unlock; | |
2839 | } | |
2840 | ||
2841 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); | |
2842 | if (IS_ERR(handle)) { | |
2843 | status = PTR_ERR(handle); | |
2844 | handle = NULL; | |
2845 | mlog_errno(status); | |
2846 | goto orphan_unlock; | |
2847 | } | |
2848 | ||
2849 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), | |
2850 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); | |
2851 | if (status < 0) { | |
2852 | mlog_errno(status); | |
2853 | goto out_commit; | |
2854 | } | |
2855 | ||
2856 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
06ee5c75 | 2857 | orphan_dir_bh, false); |
bc13d347 TM |
2858 | if (status < 0) { |
2859 | mlog_errno(status); | |
2860 | goto out_commit; | |
2861 | } | |
2862 | ||
2863 | di = (struct ocfs2_dinode *)di_bh->b_data; | |
13eb9887 | 2864 | di->i_flags &= ~cpu_to_le32(OCFS2_ORPHANED_FL); |
bc13d347 | 2865 | di->i_orphaned_slot = 0; |
bfe86848 | 2866 | set_nlink(inode, 1); |
10cf1a02 | 2867 | ocfs2_set_links_count(di, inode->i_nlink); |
6fdb702d | 2868 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
bc13d347 TM |
2869 | ocfs2_journal_dirty(handle, di_bh); |
2870 | ||
2871 | status = ocfs2_add_entry(handle, dentry, inode, | |
2872 | OCFS2_I(inode)->ip_blkno, parent_di_bh, | |
2873 | &lookup); | |
2874 | if (status < 0) { | |
2875 | mlog_errno(status); | |
2876 | goto out_commit; | |
2877 | } | |
2878 | ||
2879 | status = ocfs2_dentry_attach_lock(dentry, inode, | |
2880 | OCFS2_I(dir)->ip_blkno); | |
2881 | if (status) { | |
2882 | mlog_errno(status); | |
2883 | goto out_commit; | |
2884 | } | |
2885 | ||
bc13d347 TM |
2886 | d_instantiate(dentry, inode); |
2887 | status = 0; | |
2888 | out_commit: | |
2889 | ocfs2_commit_trans(osb, handle); | |
2890 | orphan_unlock: | |
2891 | ocfs2_inode_unlock(orphan_dir_inode, 1); | |
5955102c | 2892 | inode_unlock(orphan_dir_inode); |
bc13d347 TM |
2893 | iput(orphan_dir_inode); |
2894 | leave: | |
2895 | ||
2896 | ocfs2_inode_unlock(dir, 1); | |
2897 | ||
2898 | brelse(di_bh); | |
2899 | brelse(parent_di_bh); | |
2900 | brelse(orphan_dir_bh); | |
2901 | ||
2902 | ocfs2_free_dir_lookup_result(&lookup); | |
2903 | ||
c1e8d35e TM |
2904 | if (status) |
2905 | mlog_errno(status); | |
bc13d347 TM |
2906 | |
2907 | return status; | |
2908 | } | |
2909 | ||
92e1d5be | 2910 | const struct inode_operations ocfs2_dir_iops = { |
ccd979bd MF |
2911 | .create = ocfs2_create, |
2912 | .lookup = ocfs2_lookup, | |
2913 | .link = ocfs2_link, | |
2914 | .unlink = ocfs2_unlink, | |
2915 | .rmdir = ocfs2_unlink, | |
2916 | .symlink = ocfs2_symlink, | |
2917 | .mkdir = ocfs2_mkdir, | |
2918 | .mknod = ocfs2_mknod, | |
2919 | .rename = ocfs2_rename, | |
2920 | .setattr = ocfs2_setattr, | |
2921 | .getattr = ocfs2_getattr, | |
d38eb8db | 2922 | .permission = ocfs2_permission, |
cf1d6c76 | 2923 | .listxattr = ocfs2_listxattr, |
55f4946e | 2924 | .fiemap = ocfs2_fiemap, |
cac2f8b8 | 2925 | .get_inode_acl = ocfs2_iop_get_acl, |
702e5bc6 | 2926 | .set_acl = ocfs2_iop_set_acl, |
2b5f52c5 MS |
2927 | .fileattr_get = ocfs2_fileattr_get, |
2928 | .fileattr_set = ocfs2_fileattr_set, | |
ccd979bd | 2929 | }; |