Commit | Line | Data |
---|---|---|
0a8165d7 | 1 | /* |
57397d86 JK |
2 | * fs/f2fs/namei.c |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #include <linux/fs.h> | |
12 | #include <linux/f2fs_fs.h> | |
13 | #include <linux/pagemap.h> | |
14 | #include <linux/sched.h> | |
15 | #include <linux/ctype.h> | |
50732df0 | 16 | #include <linux/dcache.h> |
feb7cbb0 | 17 | #include <linux/namei.h> |
0abd675e | 18 | #include <linux/quotaops.h> |
57397d86 JK |
19 | |
20 | #include "f2fs.h" | |
953a3e27 | 21 | #include "node.h" |
57397d86 JK |
22 | #include "xattr.h" |
23 | #include "acl.h" | |
a2a4a7e4 | 24 | #include <trace/events/f2fs.h> |
57397d86 JK |
25 | |
26 | static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode) | |
27 | { | |
4081363f | 28 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 JK |
29 | nid_t ino; |
30 | struct inode *inode; | |
31 | bool nid_free = false; | |
6afc662e | 32 | int xattr_size = 0; |
e479556b | 33 | int err; |
57397d86 | 34 | |
a014e037 | 35 | inode = new_inode(dir->i_sb); |
57397d86 JK |
36 | if (!inode) |
37 | return ERR_PTR(-ENOMEM); | |
38 | ||
e479556b | 39 | f2fs_lock_op(sbi); |
57397d86 | 40 | if (!alloc_nid(sbi, &ino)) { |
e479556b | 41 | f2fs_unlock_op(sbi); |
57397d86 JK |
42 | err = -ENOSPC; |
43 | goto fail; | |
44 | } | |
e479556b | 45 | f2fs_unlock_op(sbi); |
57397d86 | 46 | |
0abd675e CY |
47 | nid_free = true; |
48 | ||
70ff5dfe | 49 | inode_init_owner(inode, dir, mode); |
57397d86 JK |
50 | |
51 | inode->i_ino = ino; | |
57397d86 | 52 | inode->i_blocks = 0; |
1c1d35df CY |
53 | inode->i_mtime = inode->i_atime = inode->i_ctime = |
54 | F2FS_I(inode)->i_crtime = current_time(inode); | |
57397d86 JK |
55 | inode->i_generation = sbi->s_next_generation++; |
56 | ||
57 | err = insert_inode_locked(inode); | |
58 | if (err) { | |
59 | err = -EINVAL; | |
a21c20f0 | 60 | goto fail; |
57397d86 | 61 | } |
622f28ae | 62 | |
5c57132e CY |
63 | if (f2fs_sb_has_project_quota(sbi->sb) && |
64 | (F2FS_I(dir)->i_flags & FS_PROJINHERIT_FL)) | |
65 | F2FS_I(inode)->i_projid = F2FS_I(dir)->i_projid; | |
66 | else | |
67 | F2FS_I(inode)->i_projid = make_kprojid(&init_user_ns, | |
68 | F2FS_DEF_PROJID); | |
69 | ||
0abd675e CY |
70 | err = dquot_initialize(inode); |
71 | if (err) | |
72 | goto fail_drop; | |
73 | ||
74 | err = dquot_alloc_inode(inode); | |
75 | if (err) | |
76 | goto fail_drop; | |
77 | ||
9ac1e2d8 DJ |
78 | set_inode_flag(inode, FI_NEW_INODE); |
79 | ||
fcc85a4d JK |
80 | /* If the directory encrypted, then we should encrypt the inode. */ |
81 | if (f2fs_encrypted_inode(dir) && f2fs_may_encrypt(inode)) | |
82 | f2fs_set_encrypted_inode(inode); | |
83 | ||
7a2af766 CY |
84 | if (f2fs_sb_has_extra_attr(sbi->sb)) { |
85 | set_inode_flag(inode, FI_EXTRA_ATTR); | |
86 | F2FS_I(inode)->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE; | |
87 | } | |
88 | ||
91942321 JK |
89 | if (test_opt(sbi, INLINE_XATTR)) |
90 | set_inode_flag(inode, FI_INLINE_XATTR); | |
6afc662e | 91 | |
fba48a8b | 92 | if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode)) |
91942321 | 93 | set_inode_flag(inode, FI_INLINE_DATA); |
01b960e9 | 94 | if (f2fs_may_inline_dentry(inode)) |
91942321 | 95 | set_inode_flag(inode, FI_INLINE_DENTRY); |
622f28ae | 96 | |
6afc662e CY |
97 | if (f2fs_sb_has_flexible_inline_xattr(sbi->sb)) { |
98 | f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode)); | |
99 | if (f2fs_has_inline_xattr(inode)) | |
100 | xattr_size = sbi->inline_xattr_size; | |
101 | /* Otherwise, will be 0 */ | |
102 | } else if (f2fs_has_inline_xattr(inode) || | |
103 | f2fs_has_inline_dentry(inode)) { | |
104 | xattr_size = DEFAULT_INLINE_XATTR_ADDRS; | |
105 | } | |
106 | F2FS_I(inode)->i_inline_xattr_size = xattr_size; | |
107 | ||
3e72f721 JK |
108 | f2fs_init_extent_tree(inode, NULL); |
109 | ||
d5e8f6c9 | 110 | stat_inc_inline_xattr(inode); |
2fb2c954 JK |
111 | stat_inc_inline_inode(inode); |
112 | stat_inc_inline_dir(inode); | |
113 | ||
5c57132e CY |
114 | F2FS_I(inode)->i_flags = |
115 | f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED); | |
116 | ||
11f5020d CY |
117 | if (S_ISDIR(inode->i_mode)) |
118 | F2FS_I(inode)->i_flags |= FS_INDEX_FL; | |
119 | ||
5c57132e CY |
120 | if (F2FS_I(inode)->i_flags & FS_PROJINHERIT_FL) |
121 | set_inode_flag(inode, FI_PROJ_INHERIT); | |
122 | ||
d70b4f53 | 123 | trace_f2fs_new_inode(inode, 0); |
57397d86 JK |
124 | return inode; |
125 | ||
57397d86 | 126 | fail: |
d70b4f53 | 127 | trace_f2fs_new_inode(inode, err); |
531ad7d5 | 128 | make_bad_inode(inode); |
57397d86 | 129 | if (nid_free) |
91942321 | 130 | set_inode_flag(inode, FI_FREE_NID); |
c9b63bd0 | 131 | iput(inode); |
57397d86 | 132 | return ERR_PTR(err); |
0abd675e CY |
133 | fail_drop: |
134 | trace_f2fs_new_inode(inode, err); | |
135 | dquot_drop(inode); | |
136 | inode->i_flags |= S_NOQUOTA; | |
137 | if (nid_free) | |
138 | set_inode_flag(inode, FI_FREE_NID); | |
139 | clear_nlink(inode); | |
140 | unlock_new_inode(inode); | |
141 | iput(inode); | |
142 | return ERR_PTR(err); | |
57397d86 JK |
143 | } |
144 | ||
145 | static int is_multimedia_file(const unsigned char *s, const char *sub) | |
146 | { | |
9836b8b9 LR |
147 | size_t slen = strlen(s); |
148 | size_t sublen = strlen(sub); | |
7732c26a | 149 | int i; |
57397d86 | 150 | |
741a7bea CY |
151 | /* |
152 | * filename format of multimedia file should be defined as: | |
7732c26a | 153 | * "filename + '.' + extension + (optional: '.' + temp extension)". |
741a7bea CY |
154 | */ |
155 | if (slen < sublen + 2) | |
156 | return 0; | |
157 | ||
7732c26a CY |
158 | for (i = 1; i < slen - sublen; i++) { |
159 | if (s[i] != '.') | |
160 | continue; | |
161 | if (!strncasecmp(s + i + 1, sub, sublen)) | |
162 | return 1; | |
163 | } | |
57397d86 | 164 | |
7732c26a | 165 | return 0; |
57397d86 JK |
166 | } |
167 | ||
0a8165d7 | 168 | /* |
57397d86 JK |
169 | * Set multimedia files as cold files for hot/cold data separation |
170 | */ | |
953a3e27 | 171 | static inline void set_cold_files(struct f2fs_sb_info *sbi, struct inode *inode, |
57397d86 JK |
172 | const unsigned char *name) |
173 | { | |
174 | int i; | |
175 | __u8 (*extlist)[8] = sbi->raw_super->extension_list; | |
176 | ||
177 | int count = le32_to_cpu(sbi->raw_super->extension_count); | |
178 | for (i = 0; i < count; i++) { | |
e66509f0 | 179 | if (is_multimedia_file(name, extlist[i])) { |
354a3399 | 180 | file_set_cold(inode); |
57397d86 JK |
181 | break; |
182 | } | |
183 | } | |
184 | } | |
185 | ||
186 | static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode, | |
187 | bool excl) | |
188 | { | |
4081363f | 189 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 JK |
190 | struct inode *inode; |
191 | nid_t ino = 0; | |
e479556b | 192 | int err; |
57397d86 | 193 | |
1f227a3e JK |
194 | if (unlikely(f2fs_cp_error(sbi))) |
195 | return -EIO; | |
196 | ||
0abd675e CY |
197 | err = dquot_initialize(dir); |
198 | if (err) | |
199 | return err; | |
200 | ||
57397d86 JK |
201 | inode = f2fs_new_inode(dir, mode); |
202 | if (IS_ERR(inode)) | |
203 | return PTR_ERR(inode); | |
204 | ||
205 | if (!test_opt(sbi, DISABLE_EXT_IDENTIFY)) | |
953a3e27 | 206 | set_cold_files(sbi, inode, dentry->d_name.name); |
57397d86 JK |
207 | |
208 | inode->i_op = &f2fs_file_inode_operations; | |
209 | inode->i_fop = &f2fs_file_operations; | |
210 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
211 | ino = inode->i_ino; | |
212 | ||
e479556b | 213 | f2fs_lock_op(sbi); |
57397d86 JK |
214 | err = f2fs_add_link(dentry, inode); |
215 | if (err) | |
216 | goto out; | |
44c16156 | 217 | f2fs_unlock_op(sbi); |
57397d86 JK |
218 | |
219 | alloc_nid_done(sbi, ino); | |
220 | ||
0a364af1 | 221 | d_instantiate(dentry, inode); |
57397d86 | 222 | unlock_new_inode(inode); |
b7e1d800 JK |
223 | |
224 | if (IS_DIRSYNC(dir)) | |
225 | f2fs_sync_fs(sbi->sb, 1); | |
9bb02c36 JK |
226 | |
227 | f2fs_balance_fs(sbi, true); | |
57397d86 JK |
228 | return 0; |
229 | out: | |
44c16156 | 230 | handle_failed_inode(inode); |
57397d86 JK |
231 | return err; |
232 | } | |
233 | ||
234 | static int f2fs_link(struct dentry *old_dentry, struct inode *dir, | |
235 | struct dentry *dentry) | |
236 | { | |
2b0143b5 | 237 | struct inode *inode = d_inode(old_dentry); |
4081363f | 238 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
e479556b | 239 | int err; |
57397d86 | 240 | |
1f227a3e JK |
241 | if (unlikely(f2fs_cp_error(sbi))) |
242 | return -EIO; | |
243 | ||
b05157e7 EB |
244 | err = fscrypt_prepare_link(old_dentry, dir, dentry); |
245 | if (err) | |
246 | return err; | |
fcc85a4d | 247 | |
5c57132e CY |
248 | if (is_inode_flag_set(dir, FI_PROJ_INHERIT) && |
249 | (!projid_eq(F2FS_I(dir)->i_projid, | |
250 | F2FS_I(old_dentry->d_inode)->i_projid))) | |
251 | return -EXDEV; | |
252 | ||
0abd675e CY |
253 | err = dquot_initialize(dir); |
254 | if (err) | |
255 | return err; | |
256 | ||
2c4db1a6 | 257 | f2fs_balance_fs(sbi, true); |
1efef832 | 258 | |
078cd827 | 259 | inode->i_ctime = current_time(inode); |
6f6fd833 | 260 | ihold(inode); |
57397d86 | 261 | |
91942321 | 262 | set_inode_flag(inode, FI_INC_LINK); |
e479556b | 263 | f2fs_lock_op(sbi); |
57397d86 JK |
264 | err = f2fs_add_link(dentry, inode); |
265 | if (err) | |
266 | goto out; | |
44c16156 | 267 | f2fs_unlock_op(sbi); |
57397d86 JK |
268 | |
269 | d_instantiate(dentry, inode); | |
b7e1d800 JK |
270 | |
271 | if (IS_DIRSYNC(dir)) | |
272 | f2fs_sync_fs(sbi->sb, 1); | |
57397d86 JK |
273 | return 0; |
274 | out: | |
91942321 | 275 | clear_inode_flag(inode, FI_INC_LINK); |
57397d86 | 276 | iput(inode); |
44c16156 | 277 | f2fs_unlock_op(sbi); |
57397d86 JK |
278 | return err; |
279 | } | |
280 | ||
281 | struct dentry *f2fs_get_parent(struct dentry *child) | |
282 | { | |
283 | struct qstr dotdot = QSTR_INIT("..", 2); | |
91246c21 CY |
284 | struct page *page; |
285 | unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot, &page); | |
286 | if (!ino) { | |
287 | if (IS_ERR(page)) | |
288 | return ERR_CAST(page); | |
57397d86 | 289 | return ERR_PTR(-ENOENT); |
91246c21 | 290 | } |
fc64005c | 291 | return d_obtain_alias(f2fs_iget(child->d_sb, ino)); |
57397d86 JK |
292 | } |
293 | ||
510022a8 JK |
294 | static int __recover_dot_dentries(struct inode *dir, nid_t pino) |
295 | { | |
296 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
297 | struct qstr dot = QSTR_INIT(".", 1); | |
298 | struct qstr dotdot = QSTR_INIT("..", 2); | |
299 | struct f2fs_dir_entry *de; | |
300 | struct page *page; | |
301 | int err = 0; | |
302 | ||
4e0d836d CY |
303 | if (f2fs_readonly(sbi->sb)) { |
304 | f2fs_msg(sbi->sb, KERN_INFO, | |
305 | "skip recovering inline_dots inode (ino:%lu, pino:%u) " | |
306 | "in readonly mountpoint", dir->i_ino, pino); | |
307 | return 0; | |
308 | } | |
309 | ||
a6d3a479 CY |
310 | err = dquot_initialize(dir); |
311 | if (err) | |
312 | return err; | |
313 | ||
2c4db1a6 | 314 | f2fs_balance_fs(sbi, true); |
d5384174 | 315 | |
510022a8 JK |
316 | f2fs_lock_op(sbi); |
317 | ||
318 | de = f2fs_find_entry(dir, &dot, &page); | |
319 | if (de) { | |
320 | f2fs_dentry_kunmap(dir, page); | |
321 | f2fs_put_page(page, 0); | |
42d96401 JK |
322 | } else if (IS_ERR(page)) { |
323 | err = PTR_ERR(page); | |
324 | goto out; | |
510022a8 JK |
325 | } else { |
326 | err = __f2fs_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR); | |
327 | if (err) | |
328 | goto out; | |
329 | } | |
330 | ||
331 | de = f2fs_find_entry(dir, &dotdot, &page); | |
332 | if (de) { | |
333 | f2fs_dentry_kunmap(dir, page); | |
334 | f2fs_put_page(page, 0); | |
42d96401 JK |
335 | } else if (IS_ERR(page)) { |
336 | err = PTR_ERR(page); | |
510022a8 JK |
337 | } else { |
338 | err = __f2fs_add_link(dir, &dotdot, NULL, pino, S_IFDIR); | |
339 | } | |
340 | out: | |
205b9822 | 341 | if (!err) |
91942321 | 342 | clear_inode_flag(dir, FI_INLINE_DOTS); |
510022a8 JK |
343 | |
344 | f2fs_unlock_op(sbi); | |
345 | return err; | |
346 | } | |
347 | ||
57397d86 JK |
348 | static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry, |
349 | unsigned int flags) | |
350 | { | |
351 | struct inode *inode = NULL; | |
352 | struct f2fs_dir_entry *de; | |
353 | struct page *page; | |
0c5e36db CY |
354 | struct dentry *new; |
355 | nid_t ino = -1; | |
fcc85a4d | 356 | int err = 0; |
8c2b1435 | 357 | unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir)); |
57397d86 | 358 | |
0c5e36db CY |
359 | trace_f2fs_lookup_start(dir, dentry, flags); |
360 | ||
55899d7b EB |
361 | err = fscrypt_prepare_lookup(dir, dentry, flags); |
362 | if (err) | |
363 | goto out; | |
8074bb51 | 364 | |
0c5e36db CY |
365 | if (dentry->d_name.len > F2FS_NAME_LEN) { |
366 | err = -ENAMETOOLONG; | |
367 | goto out; | |
368 | } | |
57397d86 JK |
369 | |
370 | de = f2fs_find_entry(dir, &dentry->d_name, &page); | |
eb4246dc | 371 | if (!de) { |
0c5e36db CY |
372 | if (IS_ERR(page)) { |
373 | err = PTR_ERR(page); | |
374 | goto out; | |
375 | } | |
376 | goto out_splice; | |
eb4246dc | 377 | } |
57397d86 | 378 | |
06957e8f JK |
379 | ino = le32_to_cpu(de->ino); |
380 | f2fs_dentry_kunmap(dir, page); | |
381 | f2fs_put_page(page, 0); | |
510022a8 | 382 | |
06957e8f | 383 | inode = f2fs_iget(dir->i_sb, ino); |
0c5e36db CY |
384 | if (IS_ERR(inode)) { |
385 | err = PTR_ERR(inode); | |
386 | goto out; | |
387 | } | |
510022a8 | 388 | |
8c2b1435 LX |
389 | if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) { |
390 | err = __recover_dot_dentries(dir, root_ino); | |
391 | if (err) | |
0c5e36db | 392 | goto out_iput; |
8c2b1435 LX |
393 | } |
394 | ||
fcc85a4d | 395 | if (f2fs_has_inline_dots(inode)) { |
06957e8f | 396 | err = __recover_dot_dentries(inode, dir->i_ino); |
fcc85a4d | 397 | if (err) |
0c5e36db | 398 | goto out_iput; |
57397d86 | 399 | } |
07fe8d44 DC |
400 | if (f2fs_encrypted_inode(dir) && |
401 | (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) && | |
402 | !fscrypt_has_permitted_context(dir, inode)) { | |
faac7fd9 EB |
403 | f2fs_msg(inode->i_sb, KERN_WARNING, |
404 | "Inconsistent encryption contexts: %lu/%lu", | |
405 | dir->i_ino, inode->i_ino); | |
406 | err = -EPERM; | |
0c5e36db | 407 | goto out_iput; |
8074bb51 | 408 | } |
0c5e36db CY |
409 | out_splice: |
410 | new = d_splice_alias(inode, dentry); | |
411 | if (IS_ERR(new)) | |
412 | err = PTR_ERR(new); | |
413 | trace_f2fs_lookup_end(dir, dentry, ino, err); | |
414 | return new; | |
415 | out_iput: | |
d726732c | 416 | iput(inode); |
0c5e36db CY |
417 | out: |
418 | trace_f2fs_lookup_end(dir, dentry, ino, err); | |
fcc85a4d | 419 | return ERR_PTR(err); |
57397d86 JK |
420 | } |
421 | ||
422 | static int f2fs_unlink(struct inode *dir, struct dentry *dentry) | |
423 | { | |
4081363f | 424 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
2b0143b5 | 425 | struct inode *inode = d_inode(dentry); |
57397d86 JK |
426 | struct f2fs_dir_entry *de; |
427 | struct page *page; | |
428 | int err = -ENOENT; | |
429 | ||
a2a4a7e4 | 430 | trace_f2fs_unlink_enter(dir, dentry); |
1efef832 | 431 | |
1f227a3e JK |
432 | if (unlikely(f2fs_cp_error(sbi))) |
433 | return -EIO; | |
434 | ||
0abd675e | 435 | err = dquot_initialize(dir); |
d8d1389e JK |
436 | if (err) |
437 | return err; | |
438 | err = dquot_initialize(inode); | |
0abd675e CY |
439 | if (err) |
440 | return err; | |
441 | ||
57397d86 | 442 | de = f2fs_find_entry(dir, &dentry->d_name, &page); |
91246c21 CY |
443 | if (!de) { |
444 | if (IS_ERR(page)) | |
445 | err = PTR_ERR(page); | |
57397d86 | 446 | goto fail; |
91246c21 | 447 | } |
57397d86 | 448 | |
2c4db1a6 | 449 | f2fs_balance_fs(sbi, true); |
00623e6b | 450 | |
ccaaca25 | 451 | f2fs_lock_op(sbi); |
cbd56e7d | 452 | err = acquire_orphan_inode(sbi); |
57397d86 | 453 | if (err) { |
ccaaca25 | 454 | f2fs_unlock_op(sbi); |
9486ba44 | 455 | f2fs_dentry_kunmap(dir, page); |
57397d86 JK |
456 | f2fs_put_page(page, 0); |
457 | goto fail; | |
458 | } | |
dbeacf02 | 459 | f2fs_delete_entry(de, page, dir, inode); |
e479556b | 460 | f2fs_unlock_op(sbi); |
57397d86 | 461 | |
b7e1d800 JK |
462 | if (IS_DIRSYNC(dir)) |
463 | f2fs_sync_fs(sbi->sb, 1); | |
57397d86 | 464 | fail: |
a2a4a7e4 | 465 | trace_f2fs_unlink_exit(inode, err); |
57397d86 JK |
466 | return err; |
467 | } | |
468 | ||
6b255391 | 469 | static const char *f2fs_get_link(struct dentry *dentry, |
fceef393 AV |
470 | struct inode *inode, |
471 | struct delayed_call *done) | |
feb7cbb0 | 472 | { |
fceef393 | 473 | const char *link = page_get_link(dentry, inode, done); |
680baacb AV |
474 | if (!IS_ERR(link) && !*link) { |
475 | /* this is broken symlink case */ | |
fceef393 AV |
476 | do_delayed_call(done); |
477 | clear_delayed_call(done); | |
680baacb | 478 | link = ERR_PTR(-ENOENT); |
feb7cbb0 | 479 | } |
680baacb | 480 | return link; |
feb7cbb0 JK |
481 | } |
482 | ||
57397d86 JK |
483 | static int f2fs_symlink(struct inode *dir, struct dentry *dentry, |
484 | const char *symname) | |
485 | { | |
4081363f | 486 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 | 487 | struct inode *inode; |
cbaf042a | 488 | size_t len = strlen(symname); |
393c038f | 489 | struct fscrypt_str disk_link; |
e479556b | 490 | int err; |
57397d86 | 491 | |
1f227a3e JK |
492 | if (unlikely(f2fs_cp_error(sbi))) |
493 | return -EIO; | |
494 | ||
393c038f EB |
495 | err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize, |
496 | &disk_link); | |
497 | if (err) | |
498 | return err; | |
cbaf042a | 499 | |
0abd675e CY |
500 | err = dquot_initialize(dir); |
501 | if (err) | |
502 | return err; | |
503 | ||
57397d86 JK |
504 | inode = f2fs_new_inode(dir, S_IFLNK | S_IRWXUGO); |
505 | if (IS_ERR(inode)) | |
506 | return PTR_ERR(inode); | |
507 | ||
393c038f | 508 | if (IS_ENCRYPTED(inode)) |
cbaf042a JK |
509 | inode->i_op = &f2fs_encrypted_symlink_inode_operations; |
510 | else | |
511 | inode->i_op = &f2fs_symlink_inode_operations; | |
21fc61c7 | 512 | inode_nohighmem(inode); |
57397d86 JK |
513 | inode->i_mapping->a_ops = &f2fs_dblock_aops; |
514 | ||
e479556b | 515 | f2fs_lock_op(sbi); |
57397d86 JK |
516 | err = f2fs_add_link(dentry, inode); |
517 | if (err) | |
393c038f | 518 | goto out_handle_failed_inode; |
44c16156 | 519 | f2fs_unlock_op(sbi); |
57397d86 JK |
520 | alloc_nid_done(sbi, inode->i_ino); |
521 | ||
393c038f EB |
522 | err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link); |
523 | if (err) | |
524 | goto err_out; | |
cbaf042a | 525 | |
922ec355 | 526 | err = page_symlink(inode, disk_link.name, disk_link.len); |
cbaf042a JK |
527 | |
528 | err_out: | |
57397d86 JK |
529 | d_instantiate(dentry, inode); |
530 | unlock_new_inode(inode); | |
b7e1d800 | 531 | |
d0cae97c JK |
532 | /* |
533 | * Let's flush symlink data in order to avoid broken symlink as much as | |
534 | * possible. Nevertheless, fsyncing is the best way, but there is no | |
535 | * way to get a file descriptor in order to flush that. | |
536 | * | |
537 | * Note that, it needs to do dir->fsync to make this recoverable. | |
538 | * If the symlink path is stored into inline_data, there is no | |
539 | * performance regression. | |
540 | */ | |
a6be014e | 541 | if (!err) { |
922ec355 CY |
542 | filemap_write_and_wait_range(inode->i_mapping, 0, |
543 | disk_link.len - 1); | |
d0cae97c | 544 | |
a6be014e CY |
545 | if (IS_DIRSYNC(dir)) |
546 | f2fs_sync_fs(sbi->sb, 1); | |
547 | } else { | |
548 | f2fs_unlink(dir, dentry); | |
549 | } | |
cbaf042a | 550 | |
9bb02c36 | 551 | f2fs_balance_fs(sbi, true); |
393c038f EB |
552 | goto out_free_encrypted_link; |
553 | ||
554 | out_handle_failed_inode: | |
44c16156 | 555 | handle_failed_inode(inode); |
393c038f EB |
556 | out_free_encrypted_link: |
557 | if (disk_link.name != (unsigned char *)symname) | |
558 | kfree(disk_link.name); | |
57397d86 JK |
559 | return err; |
560 | } | |
561 | ||
562 | static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) | |
563 | { | |
4081363f | 564 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 | 565 | struct inode *inode; |
e479556b | 566 | int err; |
57397d86 | 567 | |
1f227a3e JK |
568 | if (unlikely(f2fs_cp_error(sbi))) |
569 | return -EIO; | |
570 | ||
0abd675e CY |
571 | err = dquot_initialize(dir); |
572 | if (err) | |
573 | return err; | |
574 | ||
57397d86 | 575 | inode = f2fs_new_inode(dir, S_IFDIR | mode); |
57397d86 | 576 | if (IS_ERR(inode)) |
61412b64 | 577 | return PTR_ERR(inode); |
57397d86 JK |
578 | |
579 | inode->i_op = &f2fs_dir_inode_operations; | |
580 | inode->i_fop = &f2fs_dir_operations; | |
581 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
560d4672 | 582 | mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_HIGH_ZERO); |
57397d86 | 583 | |
91942321 | 584 | set_inode_flag(inode, FI_INC_LINK); |
e479556b | 585 | f2fs_lock_op(sbi); |
57397d86 JK |
586 | err = f2fs_add_link(dentry, inode); |
587 | if (err) | |
588 | goto out_fail; | |
44c16156 | 589 | f2fs_unlock_op(sbi); |
57397d86 JK |
590 | |
591 | alloc_nid_done(sbi, inode->i_ino); | |
592 | ||
593 | d_instantiate(dentry, inode); | |
594 | unlock_new_inode(inode); | |
595 | ||
b7e1d800 JK |
596 | if (IS_DIRSYNC(dir)) |
597 | f2fs_sync_fs(sbi->sb, 1); | |
9bb02c36 JK |
598 | |
599 | f2fs_balance_fs(sbi, true); | |
57397d86 JK |
600 | return 0; |
601 | ||
602 | out_fail: | |
91942321 | 603 | clear_inode_flag(inode, FI_INC_LINK); |
44c16156 | 604 | handle_failed_inode(inode); |
57397d86 JK |
605 | return err; |
606 | } | |
607 | ||
608 | static int f2fs_rmdir(struct inode *dir, struct dentry *dentry) | |
609 | { | |
2b0143b5 | 610 | struct inode *inode = d_inode(dentry); |
57397d86 JK |
611 | if (f2fs_empty_dir(inode)) |
612 | return f2fs_unlink(dir, dentry); | |
613 | return -ENOTEMPTY; | |
614 | } | |
615 | ||
616 | static int f2fs_mknod(struct inode *dir, struct dentry *dentry, | |
617 | umode_t mode, dev_t rdev) | |
618 | { | |
4081363f | 619 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 JK |
620 | struct inode *inode; |
621 | int err = 0; | |
622 | ||
1f227a3e JK |
623 | if (unlikely(f2fs_cp_error(sbi))) |
624 | return -EIO; | |
625 | ||
0abd675e CY |
626 | err = dquot_initialize(dir); |
627 | if (err) | |
628 | return err; | |
629 | ||
57397d86 JK |
630 | inode = f2fs_new_inode(dir, mode); |
631 | if (IS_ERR(inode)) | |
632 | return PTR_ERR(inode); | |
633 | ||
634 | init_special_inode(inode, inode->i_mode, rdev); | |
635 | inode->i_op = &f2fs_special_inode_operations; | |
636 | ||
e479556b | 637 | f2fs_lock_op(sbi); |
57397d86 JK |
638 | err = f2fs_add_link(dentry, inode); |
639 | if (err) | |
640 | goto out; | |
44c16156 | 641 | f2fs_unlock_op(sbi); |
57397d86 JK |
642 | |
643 | alloc_nid_done(sbi, inode->i_ino); | |
b7e1d800 | 644 | |
57397d86 JK |
645 | d_instantiate(dentry, inode); |
646 | unlock_new_inode(inode); | |
b7e1d800 JK |
647 | |
648 | if (IS_DIRSYNC(dir)) | |
649 | f2fs_sync_fs(sbi->sb, 1); | |
9bb02c36 JK |
650 | |
651 | f2fs_balance_fs(sbi, true); | |
57397d86 JK |
652 | return 0; |
653 | out: | |
44c16156 | 654 | handle_failed_inode(inode); |
57397d86 JK |
655 | return err; |
656 | } | |
657 | ||
7e01e7ad CY |
658 | static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry, |
659 | umode_t mode, struct inode **whiteout) | |
660 | { | |
661 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
662 | struct inode *inode; | |
663 | int err; | |
664 | ||
0abd675e CY |
665 | err = dquot_initialize(dir); |
666 | if (err) | |
667 | return err; | |
668 | ||
7e01e7ad CY |
669 | inode = f2fs_new_inode(dir, mode); |
670 | if (IS_ERR(inode)) | |
671 | return PTR_ERR(inode); | |
672 | ||
673 | if (whiteout) { | |
674 | init_special_inode(inode, inode->i_mode, WHITEOUT_DEV); | |
675 | inode->i_op = &f2fs_special_inode_operations; | |
676 | } else { | |
677 | inode->i_op = &f2fs_file_inode_operations; | |
678 | inode->i_fop = &f2fs_file_operations; | |
679 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
680 | } | |
681 | ||
682 | f2fs_lock_op(sbi); | |
683 | err = acquire_orphan_inode(sbi); | |
684 | if (err) | |
685 | goto out; | |
686 | ||
687 | err = f2fs_do_tmpfile(inode, dir); | |
688 | if (err) | |
689 | goto release_out; | |
690 | ||
691 | /* | |
692 | * add this non-linked tmpfile to orphan list, in this way we could | |
693 | * remove all unused data of tmpfile after abnormal power-off. | |
694 | */ | |
67c3758d | 695 | add_orphan_inode(inode); |
7e01e7ad CY |
696 | alloc_nid_done(sbi, inode->i_ino); |
697 | ||
698 | if (whiteout) { | |
a1961246 | 699 | f2fs_i_links_write(inode, false); |
7e01e7ad CY |
700 | *whiteout = inode; |
701 | } else { | |
702 | d_tmpfile(dentry, inode); | |
703 | } | |
a1961246 JK |
704 | /* link_count was changed by d_tmpfile as well. */ |
705 | f2fs_unlock_op(sbi); | |
7e01e7ad | 706 | unlock_new_inode(inode); |
9bb02c36 JK |
707 | |
708 | f2fs_balance_fs(sbi, true); | |
7e01e7ad CY |
709 | return 0; |
710 | ||
711 | release_out: | |
712 | release_orphan_inode(sbi); | |
713 | out: | |
714 | handle_failed_inode(inode); | |
715 | return err; | |
716 | } | |
717 | ||
718 | static int f2fs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) | |
719 | { | |
1f227a3e JK |
720 | if (unlikely(f2fs_cp_error(F2FS_I_SB(dir)))) |
721 | return -EIO; | |
722 | ||
304eecc3 | 723 | if (f2fs_encrypted_inode(dir)) { |
0b81d077 | 724 | int err = fscrypt_get_encryption_info(dir); |
304eecc3 JK |
725 | if (err) |
726 | return err; | |
727 | } | |
728 | ||
7e01e7ad CY |
729 | return __f2fs_tmpfile(dir, dentry, mode, NULL); |
730 | } | |
731 | ||
732 | static int f2fs_create_whiteout(struct inode *dir, struct inode **whiteout) | |
733 | { | |
1f227a3e JK |
734 | if (unlikely(f2fs_cp_error(F2FS_I_SB(dir)))) |
735 | return -EIO; | |
736 | ||
7e01e7ad CY |
737 | return __f2fs_tmpfile(dir, NULL, S_IFCHR | WHITEOUT_MODE, whiteout); |
738 | } | |
739 | ||
57397d86 | 740 | static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, |
7e01e7ad CY |
741 | struct inode *new_dir, struct dentry *new_dentry, |
742 | unsigned int flags) | |
57397d86 | 743 | { |
4081363f | 744 | struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir); |
2b0143b5 DH |
745 | struct inode *old_inode = d_inode(old_dentry); |
746 | struct inode *new_inode = d_inode(new_dentry); | |
7e01e7ad | 747 | struct inode *whiteout = NULL; |
57397d86 | 748 | struct page *old_dir_page; |
7e01e7ad | 749 | struct page *old_page, *new_page = NULL; |
57397d86 JK |
750 | struct f2fs_dir_entry *old_dir_entry = NULL; |
751 | struct f2fs_dir_entry *old_entry; | |
752 | struct f2fs_dir_entry *new_entry; | |
993a0499 | 753 | bool is_old_inline = f2fs_has_inline_dentry(old_dir); |
e479556b | 754 | int err = -ENOENT; |
57397d86 | 755 | |
1f227a3e JK |
756 | if (unlikely(f2fs_cp_error(sbi))) |
757 | return -EIO; | |
758 | ||
5c57132e CY |
759 | if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && |
760 | (!projid_eq(F2FS_I(new_dir)->i_projid, | |
761 | F2FS_I(old_dentry->d_inode)->i_projid))) | |
762 | return -EXDEV; | |
763 | ||
0abd675e CY |
764 | err = dquot_initialize(old_dir); |
765 | if (err) | |
766 | goto out; | |
767 | ||
768 | err = dquot_initialize(new_dir); | |
769 | if (err) | |
770 | goto out; | |
771 | ||
d8d1389e JK |
772 | if (new_inode) { |
773 | err = dquot_initialize(new_inode); | |
774 | if (err) | |
775 | goto out; | |
776 | } | |
777 | ||
57397d86 | 778 | old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page); |
91246c21 CY |
779 | if (!old_entry) { |
780 | if (IS_ERR(old_page)) | |
781 | err = PTR_ERR(old_page); | |
57397d86 | 782 | goto out; |
91246c21 | 783 | } |
57397d86 JK |
784 | |
785 | if (S_ISDIR(old_inode->i_mode)) { | |
57397d86 | 786 | old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page); |
3e19886e | 787 | if (!old_dir_entry) { |
91246c21 CY |
788 | if (IS_ERR(old_dir_page)) |
789 | err = PTR_ERR(old_dir_page); | |
57397d86 | 790 | goto out_old; |
3e19886e | 791 | } |
57397d86 JK |
792 | } |
793 | ||
7e01e7ad CY |
794 | if (flags & RENAME_WHITEOUT) { |
795 | err = f2fs_create_whiteout(old_dir, &whiteout); | |
796 | if (err) | |
797 | goto out_dir; | |
798 | } | |
799 | ||
57397d86 | 800 | if (new_inode) { |
57397d86 JK |
801 | |
802 | err = -ENOTEMPTY; | |
803 | if (old_dir_entry && !f2fs_empty_dir(new_inode)) | |
7e01e7ad | 804 | goto out_whiteout; |
57397d86 JK |
805 | |
806 | err = -ENOENT; | |
807 | new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, | |
808 | &new_page); | |
91246c21 CY |
809 | if (!new_entry) { |
810 | if (IS_ERR(new_page)) | |
811 | err = PTR_ERR(new_page); | |
7e01e7ad | 812 | goto out_whiteout; |
91246c21 | 813 | } |
57397d86 | 814 | |
2c4db1a6 | 815 | f2fs_balance_fs(sbi, true); |
00623e6b | 816 | |
1256010a CY |
817 | f2fs_lock_op(sbi); |
818 | ||
cbd56e7d JK |
819 | err = acquire_orphan_inode(sbi); |
820 | if (err) | |
821 | goto put_out_dir; | |
822 | ||
57397d86 JK |
823 | f2fs_set_link(new_dir, new_entry, new_page, old_inode); |
824 | ||
078cd827 | 825 | new_inode->i_ctime = current_time(new_inode); |
d928bfbf | 826 | down_write(&F2FS_I(new_inode)->i_sem); |
57397d86 | 827 | if (old_dir_entry) |
a1961246 JK |
828 | f2fs_i_links_write(new_inode, false); |
829 | f2fs_i_links_write(new_inode, false); | |
d928bfbf JK |
830 | up_write(&F2FS_I(new_inode)->i_sem); |
831 | ||
57397d86 | 832 | if (!new_inode->i_nlink) |
67c3758d | 833 | add_orphan_inode(new_inode); |
cbd56e7d JK |
834 | else |
835 | release_orphan_inode(sbi); | |
57397d86 | 836 | } else { |
2c4db1a6 | 837 | f2fs_balance_fs(sbi, true); |
00623e6b | 838 | |
1256010a CY |
839 | f2fs_lock_op(sbi); |
840 | ||
57397d86 | 841 | err = f2fs_add_link(new_dentry, old_inode); |
1256010a CY |
842 | if (err) { |
843 | f2fs_unlock_op(sbi); | |
7e01e7ad | 844 | goto out_whiteout; |
1256010a | 845 | } |
57397d86 | 846 | |
ee6d182f | 847 | if (old_dir_entry) |
a1961246 | 848 | f2fs_i_links_write(new_dir, true); |
993a0499 CY |
849 | |
850 | /* | |
851 | * old entry and new entry can locate in the same inline | |
852 | * dentry in inode, when attaching new entry in inline dentry, | |
853 | * it could force inline dentry conversion, after that, | |
854 | * old_entry and old_page will point to wrong address, in | |
855 | * order to avoid this, let's do the check and update here. | |
856 | */ | |
857 | if (is_old_inline && !f2fs_has_inline_dentry(old_dir)) { | |
858 | f2fs_put_page(old_page, 0); | |
859 | old_page = NULL; | |
860 | ||
861 | old_entry = f2fs_find_entry(old_dir, | |
862 | &old_dentry->d_name, &old_page); | |
863 | if (!old_entry) { | |
91246c21 CY |
864 | err = -ENOENT; |
865 | if (IS_ERR(old_page)) | |
866 | err = PTR_ERR(old_page); | |
993a0499 CY |
867 | f2fs_unlock_op(sbi); |
868 | goto out_whiteout; | |
869 | } | |
870 | } | |
57397d86 JK |
871 | } |
872 | ||
b2c08299 | 873 | down_write(&F2FS_I(old_inode)->i_sem); |
b855bf0e SY |
874 | if (!old_dir_entry || whiteout) |
875 | file_lost_pino(old_inode); | |
876 | else | |
877 | F2FS_I(old_inode)->i_pino = new_dir->i_ino; | |
b2c08299 JK |
878 | up_write(&F2FS_I(old_inode)->i_sem); |
879 | ||
078cd827 | 880 | old_inode->i_ctime = current_time(old_inode); |
7c45729a | 881 | f2fs_mark_inode_dirty_sync(old_inode, false); |
57397d86 | 882 | |
dbeacf02 | 883 | f2fs_delete_entry(old_entry, old_page, old_dir, NULL); |
57397d86 | 884 | |
7e01e7ad CY |
885 | if (whiteout) { |
886 | whiteout->i_state |= I_LINKABLE; | |
91942321 | 887 | set_inode_flag(whiteout, FI_INC_LINK); |
7e01e7ad CY |
888 | err = f2fs_add_link(old_dentry, whiteout); |
889 | if (err) | |
890 | goto put_out_dir; | |
891 | whiteout->i_state &= ~I_LINKABLE; | |
892 | iput(whiteout); | |
893 | } | |
894 | ||
57397d86 | 895 | if (old_dir_entry) { |
7e01e7ad | 896 | if (old_dir != new_dir && !whiteout) { |
57397d86 JK |
897 | f2fs_set_link(old_inode, old_dir_entry, |
898 | old_dir_page, new_dir); | |
899 | } else { | |
9486ba44 | 900 | f2fs_dentry_kunmap(old_inode, old_dir_page); |
57397d86 JK |
901 | f2fs_put_page(old_dir_page, 0); |
902 | } | |
a1961246 | 903 | f2fs_i_links_write(old_dir, false); |
57397d86 | 904 | } |
0a007b97 | 905 | add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO); |
57397d86 | 906 | |
e479556b | 907 | f2fs_unlock_op(sbi); |
b7e1d800 JK |
908 | |
909 | if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) | |
910 | f2fs_sync_fs(sbi->sb, 1); | |
57397d86 JK |
911 | return 0; |
912 | ||
cbd56e7d | 913 | put_out_dir: |
1256010a | 914 | f2fs_unlock_op(sbi); |
7e01e7ad CY |
915 | if (new_page) { |
916 | f2fs_dentry_kunmap(new_dir, new_page); | |
917 | f2fs_put_page(new_page, 0); | |
918 | } | |
919 | out_whiteout: | |
920 | if (whiteout) | |
921 | iput(whiteout); | |
57397d86 JK |
922 | out_dir: |
923 | if (old_dir_entry) { | |
9486ba44 | 924 | f2fs_dentry_kunmap(old_inode, old_dir_page); |
57397d86 JK |
925 | f2fs_put_page(old_dir_page, 0); |
926 | } | |
57397d86 | 927 | out_old: |
9486ba44 | 928 | f2fs_dentry_kunmap(old_dir, old_page); |
57397d86 JK |
929 | f2fs_put_page(old_page, 0); |
930 | out: | |
931 | return err; | |
932 | } | |
933 | ||
32f9bc25 CY |
934 | static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry, |
935 | struct inode *new_dir, struct dentry *new_dentry) | |
936 | { | |
4081363f | 937 | struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir); |
2b0143b5 DH |
938 | struct inode *old_inode = d_inode(old_dentry); |
939 | struct inode *new_inode = d_inode(new_dentry); | |
32f9bc25 CY |
940 | struct page *old_dir_page, *new_dir_page; |
941 | struct page *old_page, *new_page; | |
942 | struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL; | |
943 | struct f2fs_dir_entry *old_entry, *new_entry; | |
944 | int old_nlink = 0, new_nlink = 0; | |
945 | int err = -ENOENT; | |
363fa4e0 | 946 | |
1f227a3e JK |
947 | if (unlikely(f2fs_cp_error(sbi))) |
948 | return -EIO; | |
949 | ||
5c57132e CY |
950 | if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && |
951 | !projid_eq(F2FS_I(new_dir)->i_projid, | |
952 | F2FS_I(old_dentry->d_inode)->i_projid)) || | |
953 | (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && | |
954 | !projid_eq(F2FS_I(old_dir)->i_projid, | |
955 | F2FS_I(new_dentry->d_inode)->i_projid))) | |
956 | return -EXDEV; | |
957 | ||
0abd675e CY |
958 | err = dquot_initialize(old_dir); |
959 | if (err) | |
960 | goto out; | |
961 | ||
962 | err = dquot_initialize(new_dir); | |
963 | if (err) | |
964 | goto out; | |
965 | ||
32f9bc25 | 966 | old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page); |
91246c21 CY |
967 | if (!old_entry) { |
968 | if (IS_ERR(old_page)) | |
969 | err = PTR_ERR(old_page); | |
32f9bc25 | 970 | goto out; |
91246c21 | 971 | } |
32f9bc25 CY |
972 | |
973 | new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page); | |
91246c21 CY |
974 | if (!new_entry) { |
975 | if (IS_ERR(new_page)) | |
976 | err = PTR_ERR(new_page); | |
32f9bc25 | 977 | goto out_old; |
91246c21 | 978 | } |
32f9bc25 CY |
979 | |
980 | /* prepare for updating ".." directory entry info later */ | |
981 | if (old_dir != new_dir) { | |
982 | if (S_ISDIR(old_inode->i_mode)) { | |
32f9bc25 CY |
983 | old_dir_entry = f2fs_parent_dir(old_inode, |
984 | &old_dir_page); | |
3e19886e | 985 | if (!old_dir_entry) { |
91246c21 CY |
986 | if (IS_ERR(old_dir_page)) |
987 | err = PTR_ERR(old_dir_page); | |
32f9bc25 | 988 | goto out_new; |
3e19886e | 989 | } |
32f9bc25 CY |
990 | } |
991 | ||
992 | if (S_ISDIR(new_inode->i_mode)) { | |
32f9bc25 CY |
993 | new_dir_entry = f2fs_parent_dir(new_inode, |
994 | &new_dir_page); | |
3e19886e | 995 | if (!new_dir_entry) { |
91246c21 CY |
996 | if (IS_ERR(new_dir_page)) |
997 | err = PTR_ERR(new_dir_page); | |
32f9bc25 | 998 | goto out_old_dir; |
3e19886e | 999 | } |
32f9bc25 CY |
1000 | } |
1001 | } | |
1002 | ||
1003 | /* | |
1004 | * If cross rename between file and directory those are not | |
1005 | * in the same directory, we will inc nlink of file's parent | |
1006 | * later, so we should check upper boundary of its nlink. | |
1007 | */ | |
1008 | if ((!old_dir_entry || !new_dir_entry) && | |
1009 | old_dir_entry != new_dir_entry) { | |
1010 | old_nlink = old_dir_entry ? -1 : 1; | |
1011 | new_nlink = -old_nlink; | |
1012 | err = -EMLINK; | |
e2f0e962 KM |
1013 | if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) || |
1014 | (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX)) | |
32f9bc25 CY |
1015 | goto out_new_dir; |
1016 | } | |
1017 | ||
2c4db1a6 | 1018 | f2fs_balance_fs(sbi, true); |
00623e6b | 1019 | |
32f9bc25 CY |
1020 | f2fs_lock_op(sbi); |
1021 | ||
32f9bc25 CY |
1022 | /* update ".." directory entry info of old dentry */ |
1023 | if (old_dir_entry) | |
1024 | f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir); | |
1025 | ||
1026 | /* update ".." directory entry info of new dentry */ | |
1027 | if (new_dir_entry) | |
1028 | f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir); | |
1029 | ||
1030 | /* update directory entry info of old dir inode */ | |
1031 | f2fs_set_link(old_dir, old_entry, old_page, new_inode); | |
1032 | ||
1033 | down_write(&F2FS_I(old_inode)->i_sem); | |
1034 | file_lost_pino(old_inode); | |
1035 | up_write(&F2FS_I(old_inode)->i_sem); | |
1036 | ||
078cd827 | 1037 | old_dir->i_ctime = current_time(old_dir); |
32f9bc25 CY |
1038 | if (old_nlink) { |
1039 | down_write(&F2FS_I(old_dir)->i_sem); | |
a1961246 | 1040 | f2fs_i_links_write(old_dir, old_nlink > 0); |
32f9bc25 CY |
1041 | up_write(&F2FS_I(old_dir)->i_sem); |
1042 | } | |
7c45729a | 1043 | f2fs_mark_inode_dirty_sync(old_dir, false); |
32f9bc25 CY |
1044 | |
1045 | /* update directory entry info of new dir inode */ | |
1046 | f2fs_set_link(new_dir, new_entry, new_page, old_inode); | |
1047 | ||
1048 | down_write(&F2FS_I(new_inode)->i_sem); | |
1049 | file_lost_pino(new_inode); | |
1050 | up_write(&F2FS_I(new_inode)->i_sem); | |
1051 | ||
078cd827 | 1052 | new_dir->i_ctime = current_time(new_dir); |
32f9bc25 CY |
1053 | if (new_nlink) { |
1054 | down_write(&F2FS_I(new_dir)->i_sem); | |
a1961246 | 1055 | f2fs_i_links_write(new_dir, new_nlink > 0); |
32f9bc25 CY |
1056 | up_write(&F2FS_I(new_dir)->i_sem); |
1057 | } | |
7c45729a | 1058 | f2fs_mark_inode_dirty_sync(new_dir, false); |
32f9bc25 | 1059 | |
0a007b97 JK |
1060 | add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO); |
1061 | add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO); | |
1062 | ||
32f9bc25 | 1063 | f2fs_unlock_op(sbi); |
b7e1d800 JK |
1064 | |
1065 | if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) | |
1066 | f2fs_sync_fs(sbi->sb, 1); | |
32f9bc25 | 1067 | return 0; |
32f9bc25 CY |
1068 | out_new_dir: |
1069 | if (new_dir_entry) { | |
9486ba44 | 1070 | f2fs_dentry_kunmap(new_inode, new_dir_page); |
32f9bc25 CY |
1071 | f2fs_put_page(new_dir_page, 0); |
1072 | } | |
1073 | out_old_dir: | |
1074 | if (old_dir_entry) { | |
9486ba44 | 1075 | f2fs_dentry_kunmap(old_inode, old_dir_page); |
32f9bc25 CY |
1076 | f2fs_put_page(old_dir_page, 0); |
1077 | } | |
1078 | out_new: | |
9486ba44 | 1079 | f2fs_dentry_kunmap(new_dir, new_page); |
32f9bc25 CY |
1080 | f2fs_put_page(new_page, 0); |
1081 | out_old: | |
9486ba44 | 1082 | f2fs_dentry_kunmap(old_dir, old_page); |
32f9bc25 CY |
1083 | f2fs_put_page(old_page, 0); |
1084 | out: | |
1085 | return err; | |
1086 | } | |
1087 | ||
1088 | static int f2fs_rename2(struct inode *old_dir, struct dentry *old_dentry, | |
1089 | struct inode *new_dir, struct dentry *new_dentry, | |
1090 | unsigned int flags) | |
1091 | { | |
2e45b07f EB |
1092 | int err; |
1093 | ||
7e01e7ad | 1094 | if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT)) |
32f9bc25 CY |
1095 | return -EINVAL; |
1096 | ||
2e45b07f EB |
1097 | err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry, |
1098 | flags); | |
1099 | if (err) | |
1100 | return err; | |
1101 | ||
32f9bc25 CY |
1102 | if (flags & RENAME_EXCHANGE) { |
1103 | return f2fs_cross_rename(old_dir, old_dentry, | |
1104 | new_dir, new_dentry); | |
1105 | } | |
1106 | /* | |
1107 | * VFS has already handled the new dentry existence case, | |
1108 | * here, we just deal with "RENAME_NOREPLACE" as regular rename. | |
1109 | */ | |
7e01e7ad | 1110 | return f2fs_rename(old_dir, old_dentry, new_dir, new_dentry, flags); |
32f9bc25 CY |
1111 | } |
1112 | ||
6b255391 | 1113 | static const char *f2fs_encrypted_get_link(struct dentry *dentry, |
fceef393 AV |
1114 | struct inode *inode, |
1115 | struct delayed_call *done) | |
50732df0 | 1116 | { |
f2329cb6 EB |
1117 | struct page *page; |
1118 | const char *target; | |
cbaf042a | 1119 | |
6b255391 AV |
1120 | if (!dentry) |
1121 | return ERR_PTR(-ECHILD); | |
1122 | ||
f2329cb6 EB |
1123 | page = read_mapping_page(inode->i_mapping, 0, NULL); |
1124 | if (IS_ERR(page)) | |
1125 | return ERR_CAST(page); | |
cbaf042a | 1126 | |
f2329cb6 EB |
1127 | target = fscrypt_get_symlink(inode, page_address(page), |
1128 | inode->i_sb->s_blocksize, done); | |
1129 | put_page(page); | |
1130 | return target; | |
50732df0 CY |
1131 | } |
1132 | ||
cbaf042a | 1133 | const struct inode_operations f2fs_encrypted_symlink_inode_operations = { |
6b255391 | 1134 | .get_link = f2fs_encrypted_get_link, |
cbaf042a JK |
1135 | .getattr = f2fs_getattr, |
1136 | .setattr = f2fs_setattr, | |
3a9e6433 | 1137 | #ifdef CONFIG_F2FS_FS_XATTR |
cbaf042a | 1138 | .listxattr = f2fs_listxattr, |
3a9e6433 | 1139 | #endif |
cbaf042a | 1140 | }; |
cbaf042a | 1141 | |
57397d86 JK |
1142 | const struct inode_operations f2fs_dir_inode_operations = { |
1143 | .create = f2fs_create, | |
1144 | .lookup = f2fs_lookup, | |
1145 | .link = f2fs_link, | |
1146 | .unlink = f2fs_unlink, | |
1147 | .symlink = f2fs_symlink, | |
1148 | .mkdir = f2fs_mkdir, | |
1149 | .rmdir = f2fs_rmdir, | |
1150 | .mknod = f2fs_mknod, | |
2773bf00 | 1151 | .rename = f2fs_rename2, |
50732df0 | 1152 | .tmpfile = f2fs_tmpfile, |
2d4d9fb5 | 1153 | .getattr = f2fs_getattr, |
57397d86 JK |
1154 | .setattr = f2fs_setattr, |
1155 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 1156 | .set_acl = f2fs_set_acl, |
57397d86 | 1157 | #ifdef CONFIG_F2FS_FS_XATTR |
57397d86 | 1158 | .listxattr = f2fs_listxattr, |
57397d86 JK |
1159 | #endif |
1160 | }; | |
1161 | ||
1162 | const struct inode_operations f2fs_symlink_inode_operations = { | |
6b255391 | 1163 | .get_link = f2fs_get_link, |
2d4d9fb5 | 1164 | .getattr = f2fs_getattr, |
57397d86 JK |
1165 | .setattr = f2fs_setattr, |
1166 | #ifdef CONFIG_F2FS_FS_XATTR | |
57397d86 | 1167 | .listxattr = f2fs_listxattr, |
57397d86 JK |
1168 | #endif |
1169 | }; | |
1170 | ||
1171 | const struct inode_operations f2fs_special_inode_operations = { | |
2d4d9fb5 | 1172 | .getattr = f2fs_getattr, |
57397d86 JK |
1173 | .setattr = f2fs_setattr, |
1174 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 1175 | .set_acl = f2fs_set_acl, |
57397d86 | 1176 | #ifdef CONFIG_F2FS_FS_XATTR |
57397d86 | 1177 | .listxattr = f2fs_listxattr, |
57397d86 JK |
1178 | #endif |
1179 | }; |