Commit | Line | Data |
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7c1a000d | 1 | // SPDX-License-Identifier: GPL-2.0 |
0a8165d7 | 2 | /* |
57397d86 JK |
3 | * fs/f2fs/namei.c |
4 | * | |
5 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
6 | * http://www.samsung.com/ | |
57397d86 JK |
7 | */ |
8 | #include <linux/fs.h> | |
9 | #include <linux/f2fs_fs.h> | |
10 | #include <linux/pagemap.h> | |
11 | #include <linux/sched.h> | |
12 | #include <linux/ctype.h> | |
50732df0 | 13 | #include <linux/dcache.h> |
feb7cbb0 | 14 | #include <linux/namei.h> |
0abd675e | 15 | #include <linux/quotaops.h> |
57397d86 JK |
16 | |
17 | #include "f2fs.h" | |
953a3e27 | 18 | #include "node.h" |
4354994f | 19 | #include "segment.h" |
57397d86 JK |
20 | #include "xattr.h" |
21 | #include "acl.h" | |
a2a4a7e4 | 22 | #include <trace/events/f2fs.h> |
57397d86 JK |
23 | |
24 | static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode) | |
25 | { | |
4081363f | 26 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 JK |
27 | nid_t ino; |
28 | struct inode *inode; | |
29 | bool nid_free = false; | |
6afc662e | 30 | int xattr_size = 0; |
e479556b | 31 | int err; |
57397d86 | 32 | |
a014e037 | 33 | inode = new_inode(dir->i_sb); |
57397d86 JK |
34 | if (!inode) |
35 | return ERR_PTR(-ENOMEM); | |
36 | ||
e479556b | 37 | f2fs_lock_op(sbi); |
4d57b86d | 38 | if (!f2fs_alloc_nid(sbi, &ino)) { |
e479556b | 39 | f2fs_unlock_op(sbi); |
57397d86 JK |
40 | err = -ENOSPC; |
41 | goto fail; | |
42 | } | |
e479556b | 43 | f2fs_unlock_op(sbi); |
57397d86 | 44 | |
0abd675e CY |
45 | nid_free = true; |
46 | ||
70ff5dfe | 47 | inode_init_owner(inode, dir, mode); |
57397d86 JK |
48 | |
49 | inode->i_ino = ino; | |
57397d86 | 50 | inode->i_blocks = 0; |
95582b00 | 51 | inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); |
24b81dfc | 52 | F2FS_I(inode)->i_crtime = inode->i_mtime; |
57397d86 JK |
53 | inode->i_generation = sbi->s_next_generation++; |
54 | ||
1c41e680 CY |
55 | if (S_ISDIR(inode->i_mode)) |
56 | F2FS_I(inode)->i_current_depth = 1; | |
57 | ||
57397d86 JK |
58 | err = insert_inode_locked(inode); |
59 | if (err) { | |
60 | err = -EINVAL; | |
a21c20f0 | 61 | goto fail; |
57397d86 | 62 | } |
622f28ae | 63 | |
5c57132e | 64 | if (f2fs_sb_has_project_quota(sbi->sb) && |
59c84408 | 65 | (F2FS_I(dir)->i_flags & F2FS_PROJINHERIT_FL)) |
5c57132e CY |
66 | F2FS_I(inode)->i_projid = F2FS_I(dir)->i_projid; |
67 | else | |
68 | F2FS_I(inode)->i_projid = make_kprojid(&init_user_ns, | |
69 | F2FS_DEF_PROJID); | |
70 | ||
0abd675e CY |
71 | err = dquot_initialize(inode); |
72 | if (err) | |
73 | goto fail_drop; | |
74 | ||
9ac1e2d8 DJ |
75 | set_inode_flag(inode, FI_NEW_INODE); |
76 | ||
fcc85a4d | 77 | /* If the directory encrypted, then we should encrypt the inode. */ |
ff62af20 SY |
78 | if ((f2fs_encrypted_inode(dir) || DUMMY_ENCRYPTION_ENABLED(sbi)) && |
79 | f2fs_may_encrypt(inode)) | |
fcc85a4d JK |
80 | f2fs_set_encrypted_inode(inode); |
81 | ||
7a2af766 CY |
82 | if (f2fs_sb_has_extra_attr(sbi->sb)) { |
83 | set_inode_flag(inode, FI_EXTRA_ATTR); | |
84 | F2FS_I(inode)->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE; | |
85 | } | |
86 | ||
91942321 JK |
87 | if (test_opt(sbi, INLINE_XATTR)) |
88 | set_inode_flag(inode, FI_INLINE_XATTR); | |
6afc662e | 89 | |
fba48a8b | 90 | if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode)) |
91942321 | 91 | set_inode_flag(inode, FI_INLINE_DATA); |
01b960e9 | 92 | if (f2fs_may_inline_dentry(inode)) |
91942321 | 93 | set_inode_flag(inode, FI_INLINE_DENTRY); |
622f28ae | 94 | |
6afc662e CY |
95 | if (f2fs_sb_has_flexible_inline_xattr(sbi->sb)) { |
96 | f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode)); | |
97 | if (f2fs_has_inline_xattr(inode)) | |
63189b78 | 98 | xattr_size = F2FS_OPTION(sbi).inline_xattr_size; |
6afc662e CY |
99 | /* Otherwise, will be 0 */ |
100 | } else if (f2fs_has_inline_xattr(inode) || | |
101 | f2fs_has_inline_dentry(inode)) { | |
102 | xattr_size = DEFAULT_INLINE_XATTR_ADDRS; | |
103 | } | |
104 | F2FS_I(inode)->i_inline_xattr_size = xattr_size; | |
105 | ||
3e72f721 JK |
106 | f2fs_init_extent_tree(inode, NULL); |
107 | ||
d5e8f6c9 | 108 | stat_inc_inline_xattr(inode); |
2fb2c954 JK |
109 | stat_inc_inline_inode(inode); |
110 | stat_inc_inline_dir(inode); | |
111 | ||
5c57132e CY |
112 | F2FS_I(inode)->i_flags = |
113 | f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED); | |
114 | ||
11f5020d | 115 | if (S_ISDIR(inode->i_mode)) |
59c84408 | 116 | F2FS_I(inode)->i_flags |= F2FS_INDEX_FL; |
11f5020d | 117 | |
59c84408 | 118 | if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL) |
5c57132e CY |
119 | set_inode_flag(inode, FI_PROJ_INHERIT); |
120 | ||
9149a5eb CY |
121 | f2fs_set_inode_flags(inode); |
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 | ||
b6a06cbb | 145 | static int is_extension_exist(const unsigned char *s, const char *sub) |
57397d86 | 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 | */ | |
b6a06cbb | 171 | static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode, |
57397d86 JK |
172 | const unsigned char *name) |
173 | { | |
846ae671 | 174 | __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; |
b6a06cbb | 175 | int i, cold_count, hot_count; |
846ae671 CY |
176 | |
177 | down_read(&sbi->sb_lock); | |
178 | ||
b6a06cbb CY |
179 | cold_count = le32_to_cpu(sbi->raw_super->extension_count); |
180 | hot_count = sbi->raw_super->hot_ext_count; | |
57397d86 | 181 | |
b6a06cbb | 182 | for (i = 0; i < cold_count + hot_count; i++) { |
ed15ba14 CY |
183 | if (is_extension_exist(name, extlist[i])) |
184 | break; | |
57397d86 | 185 | } |
846ae671 CY |
186 | |
187 | up_read(&sbi->sb_lock); | |
ed15ba14 CY |
188 | |
189 | if (i == cold_count + hot_count) | |
190 | return; | |
191 | ||
192 | if (i < cold_count) | |
193 | file_set_cold(inode); | |
194 | else | |
195 | file_set_hot(inode); | |
846ae671 CY |
196 | } |
197 | ||
4d57b86d | 198 | int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name, |
b6a06cbb | 199 | bool hot, bool set) |
846ae671 CY |
200 | { |
201 | __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; | |
b6a06cbb CY |
202 | int cold_count = le32_to_cpu(sbi->raw_super->extension_count); |
203 | int hot_count = sbi->raw_super->hot_ext_count; | |
204 | int total_count = cold_count + hot_count; | |
205 | int start, count; | |
846ae671 CY |
206 | int i; |
207 | ||
b6a06cbb CY |
208 | if (set) { |
209 | if (total_count == F2FS_MAX_EXTENSION) | |
210 | return -EINVAL; | |
211 | } else { | |
212 | if (!hot && !cold_count) | |
213 | return -EINVAL; | |
214 | if (hot && !hot_count) | |
215 | return -EINVAL; | |
216 | } | |
217 | ||
218 | if (hot) { | |
219 | start = cold_count; | |
220 | count = total_count; | |
221 | } else { | |
222 | start = 0; | |
223 | count = cold_count; | |
224 | } | |
225 | ||
226 | for (i = start; i < count; i++) { | |
846ae671 CY |
227 | if (strcmp(name, extlist[i])) |
228 | continue; | |
229 | ||
230 | if (set) | |
231 | return -EINVAL; | |
232 | ||
233 | memcpy(extlist[i], extlist[i + 1], | |
b6a06cbb CY |
234 | F2FS_EXTENSION_LEN * (total_count - i - 1)); |
235 | memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN); | |
236 | if (hot) | |
237 | sbi->raw_super->hot_ext_count = hot_count - 1; | |
238 | else | |
239 | sbi->raw_super->extension_count = | |
240 | cpu_to_le32(cold_count - 1); | |
846ae671 CY |
241 | return 0; |
242 | } | |
243 | ||
244 | if (!set) | |
245 | return -EINVAL; | |
246 | ||
b6a06cbb | 247 | if (hot) { |
b1385478 | 248 | memcpy(extlist[count], name, strlen(name)); |
b6a06cbb CY |
249 | sbi->raw_super->hot_ext_count = hot_count + 1; |
250 | } else { | |
251 | char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN]; | |
252 | ||
253 | memcpy(buf, &extlist[cold_count], | |
254 | F2FS_EXTENSION_LEN * hot_count); | |
255 | memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN); | |
b1385478 | 256 | memcpy(extlist[cold_count], name, strlen(name)); |
b6a06cbb CY |
257 | memcpy(&extlist[cold_count + 1], buf, |
258 | F2FS_EXTENSION_LEN * hot_count); | |
259 | sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1); | |
260 | } | |
846ae671 | 261 | return 0; |
57397d86 JK |
262 | } |
263 | ||
264 | static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode, | |
265 | bool excl) | |
266 | { | |
4081363f | 267 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 JK |
268 | struct inode *inode; |
269 | nid_t ino = 0; | |
e479556b | 270 | int err; |
57397d86 | 271 | |
1f227a3e JK |
272 | if (unlikely(f2fs_cp_error(sbi))) |
273 | return -EIO; | |
4354994f DR |
274 | err = f2fs_is_checkpoint_ready(sbi); |
275 | if (err) | |
276 | return err; | |
1f227a3e | 277 | |
0abd675e CY |
278 | err = dquot_initialize(dir); |
279 | if (err) | |
280 | return err; | |
281 | ||
57397d86 JK |
282 | inode = f2fs_new_inode(dir, mode); |
283 | if (IS_ERR(inode)) | |
284 | return PTR_ERR(inode); | |
285 | ||
286 | if (!test_opt(sbi, DISABLE_EXT_IDENTIFY)) | |
b6a06cbb | 287 | set_file_temperature(sbi, inode, dentry->d_name.name); |
57397d86 JK |
288 | |
289 | inode->i_op = &f2fs_file_inode_operations; | |
290 | inode->i_fop = &f2fs_file_operations; | |
291 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
292 | ino = inode->i_ino; | |
293 | ||
e479556b | 294 | f2fs_lock_op(sbi); |
57397d86 JK |
295 | err = f2fs_add_link(dentry, inode); |
296 | if (err) | |
297 | goto out; | |
44c16156 | 298 | f2fs_unlock_op(sbi); |
57397d86 | 299 | |
4d57b86d | 300 | f2fs_alloc_nid_done(sbi, ino); |
57397d86 | 301 | |
1e2e547a | 302 | d_instantiate_new(dentry, inode); |
b7e1d800 JK |
303 | |
304 | if (IS_DIRSYNC(dir)) | |
305 | f2fs_sync_fs(sbi->sb, 1); | |
9bb02c36 JK |
306 | |
307 | f2fs_balance_fs(sbi, true); | |
57397d86 JK |
308 | return 0; |
309 | out: | |
4d57b86d | 310 | f2fs_handle_failed_inode(inode); |
57397d86 JK |
311 | return err; |
312 | } | |
313 | ||
314 | static int f2fs_link(struct dentry *old_dentry, struct inode *dir, | |
315 | struct dentry *dentry) | |
316 | { | |
2b0143b5 | 317 | struct inode *inode = d_inode(old_dentry); |
4081363f | 318 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
e479556b | 319 | int err; |
57397d86 | 320 | |
1f227a3e JK |
321 | if (unlikely(f2fs_cp_error(sbi))) |
322 | return -EIO; | |
4354994f DR |
323 | err = f2fs_is_checkpoint_ready(sbi); |
324 | if (err) | |
325 | return err; | |
1f227a3e | 326 | |
b05157e7 EB |
327 | err = fscrypt_prepare_link(old_dentry, dir, dentry); |
328 | if (err) | |
329 | return err; | |
fcc85a4d | 330 | |
5c57132e CY |
331 | if (is_inode_flag_set(dir, FI_PROJ_INHERIT) && |
332 | (!projid_eq(F2FS_I(dir)->i_projid, | |
333 | F2FS_I(old_dentry->d_inode)->i_projid))) | |
334 | return -EXDEV; | |
335 | ||
0abd675e CY |
336 | err = dquot_initialize(dir); |
337 | if (err) | |
338 | return err; | |
339 | ||
2c4db1a6 | 340 | f2fs_balance_fs(sbi, true); |
1efef832 | 341 | |
078cd827 | 342 | inode->i_ctime = current_time(inode); |
6f6fd833 | 343 | ihold(inode); |
57397d86 | 344 | |
91942321 | 345 | set_inode_flag(inode, FI_INC_LINK); |
e479556b | 346 | f2fs_lock_op(sbi); |
57397d86 JK |
347 | err = f2fs_add_link(dentry, inode); |
348 | if (err) | |
349 | goto out; | |
44c16156 | 350 | f2fs_unlock_op(sbi); |
57397d86 JK |
351 | |
352 | d_instantiate(dentry, inode); | |
b7e1d800 JK |
353 | |
354 | if (IS_DIRSYNC(dir)) | |
355 | f2fs_sync_fs(sbi->sb, 1); | |
57397d86 JK |
356 | return 0; |
357 | out: | |
91942321 | 358 | clear_inode_flag(inode, FI_INC_LINK); |
57397d86 | 359 | iput(inode); |
44c16156 | 360 | f2fs_unlock_op(sbi); |
57397d86 JK |
361 | return err; |
362 | } | |
363 | ||
364 | struct dentry *f2fs_get_parent(struct dentry *child) | |
365 | { | |
366 | struct qstr dotdot = QSTR_INIT("..", 2); | |
91246c21 CY |
367 | struct page *page; |
368 | unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot, &page); | |
369 | if (!ino) { | |
370 | if (IS_ERR(page)) | |
371 | return ERR_CAST(page); | |
57397d86 | 372 | return ERR_PTR(-ENOENT); |
91246c21 | 373 | } |
fc64005c | 374 | return d_obtain_alias(f2fs_iget(child->d_sb, ino)); |
57397d86 JK |
375 | } |
376 | ||
510022a8 JK |
377 | static int __recover_dot_dentries(struct inode *dir, nid_t pino) |
378 | { | |
379 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
380 | struct qstr dot = QSTR_INIT(".", 1); | |
381 | struct qstr dotdot = QSTR_INIT("..", 2); | |
382 | struct f2fs_dir_entry *de; | |
383 | struct page *page; | |
384 | int err = 0; | |
385 | ||
4e0d836d CY |
386 | if (f2fs_readonly(sbi->sb)) { |
387 | f2fs_msg(sbi->sb, KERN_INFO, | |
388 | "skip recovering inline_dots inode (ino:%lu, pino:%u) " | |
389 | "in readonly mountpoint", dir->i_ino, pino); | |
390 | return 0; | |
391 | } | |
392 | ||
a6d3a479 CY |
393 | err = dquot_initialize(dir); |
394 | if (err) | |
395 | return err; | |
396 | ||
2c4db1a6 | 397 | f2fs_balance_fs(sbi, true); |
d5384174 | 398 | |
510022a8 JK |
399 | f2fs_lock_op(sbi); |
400 | ||
401 | de = f2fs_find_entry(dir, &dot, &page); | |
402 | if (de) { | |
510022a8 | 403 | f2fs_put_page(page, 0); |
42d96401 JK |
404 | } else if (IS_ERR(page)) { |
405 | err = PTR_ERR(page); | |
406 | goto out; | |
510022a8 | 407 | } else { |
4d57b86d | 408 | err = f2fs_do_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR); |
510022a8 JK |
409 | if (err) |
410 | goto out; | |
411 | } | |
412 | ||
413 | de = f2fs_find_entry(dir, &dotdot, &page); | |
bdbc90fa | 414 | if (de) |
510022a8 | 415 | f2fs_put_page(page, 0); |
bdbc90fa | 416 | else if (IS_ERR(page)) |
42d96401 | 417 | err = PTR_ERR(page); |
bdbc90fa | 418 | else |
4d57b86d | 419 | err = f2fs_do_add_link(dir, &dotdot, NULL, pino, S_IFDIR); |
510022a8 | 420 | out: |
205b9822 | 421 | if (!err) |
91942321 | 422 | clear_inode_flag(dir, FI_INLINE_DOTS); |
510022a8 JK |
423 | |
424 | f2fs_unlock_op(sbi); | |
425 | return err; | |
426 | } | |
427 | ||
57397d86 JK |
428 | static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry, |
429 | unsigned int flags) | |
430 | { | |
431 | struct inode *inode = NULL; | |
432 | struct f2fs_dir_entry *de; | |
433 | struct page *page; | |
0c5e36db CY |
434 | struct dentry *new; |
435 | nid_t ino = -1; | |
fcc85a4d | 436 | int err = 0; |
8c2b1435 | 437 | unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir)); |
57397d86 | 438 | |
0c5e36db CY |
439 | trace_f2fs_lookup_start(dir, dentry, flags); |
440 | ||
55899d7b EB |
441 | err = fscrypt_prepare_lookup(dir, dentry, flags); |
442 | if (err) | |
443 | goto out; | |
8074bb51 | 444 | |
0c5e36db CY |
445 | if (dentry->d_name.len > F2FS_NAME_LEN) { |
446 | err = -ENAMETOOLONG; | |
447 | goto out; | |
448 | } | |
57397d86 JK |
449 | |
450 | de = f2fs_find_entry(dir, &dentry->d_name, &page); | |
eb4246dc | 451 | if (!de) { |
0c5e36db CY |
452 | if (IS_ERR(page)) { |
453 | err = PTR_ERR(page); | |
454 | goto out; | |
455 | } | |
456 | goto out_splice; | |
eb4246dc | 457 | } |
57397d86 | 458 | |
06957e8f | 459 | ino = le32_to_cpu(de->ino); |
06957e8f | 460 | f2fs_put_page(page, 0); |
510022a8 | 461 | |
06957e8f | 462 | inode = f2fs_iget(dir->i_sb, ino); |
0c5e36db CY |
463 | if (IS_ERR(inode)) { |
464 | err = PTR_ERR(inode); | |
465 | goto out; | |
466 | } | |
510022a8 | 467 | |
8c2b1435 LX |
468 | if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) { |
469 | err = __recover_dot_dentries(dir, root_ino); | |
470 | if (err) | |
0c5e36db | 471 | goto out_iput; |
8c2b1435 LX |
472 | } |
473 | ||
fcc85a4d | 474 | if (f2fs_has_inline_dots(inode)) { |
06957e8f | 475 | err = __recover_dot_dentries(inode, dir->i_ino); |
fcc85a4d | 476 | if (err) |
0c5e36db | 477 | goto out_iput; |
57397d86 | 478 | } |
07fe8d44 DC |
479 | if (f2fs_encrypted_inode(dir) && |
480 | (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) && | |
481 | !fscrypt_has_permitted_context(dir, inode)) { | |
faac7fd9 EB |
482 | f2fs_msg(inode->i_sb, KERN_WARNING, |
483 | "Inconsistent encryption contexts: %lu/%lu", | |
484 | dir->i_ino, inode->i_ino); | |
485 | err = -EPERM; | |
0c5e36db | 486 | goto out_iput; |
8074bb51 | 487 | } |
0c5e36db CY |
488 | out_splice: |
489 | new = d_splice_alias(inode, dentry); | |
490 | if (IS_ERR(new)) | |
491 | err = PTR_ERR(new); | |
492 | trace_f2fs_lookup_end(dir, dentry, ino, err); | |
493 | return new; | |
494 | out_iput: | |
d726732c | 495 | iput(inode); |
0c5e36db CY |
496 | out: |
497 | trace_f2fs_lookup_end(dir, dentry, ino, err); | |
fcc85a4d | 498 | return ERR_PTR(err); |
57397d86 JK |
499 | } |
500 | ||
501 | static int f2fs_unlink(struct inode *dir, struct dentry *dentry) | |
502 | { | |
4081363f | 503 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
2b0143b5 | 504 | struct inode *inode = d_inode(dentry); |
57397d86 JK |
505 | struct f2fs_dir_entry *de; |
506 | struct page *page; | |
507 | int err = -ENOENT; | |
508 | ||
a2a4a7e4 | 509 | trace_f2fs_unlink_enter(dir, dentry); |
1efef832 | 510 | |
1f227a3e JK |
511 | if (unlikely(f2fs_cp_error(sbi))) |
512 | return -EIO; | |
513 | ||
0abd675e | 514 | err = dquot_initialize(dir); |
d8d1389e JK |
515 | if (err) |
516 | return err; | |
517 | err = dquot_initialize(inode); | |
0abd675e CY |
518 | if (err) |
519 | return err; | |
520 | ||
57397d86 | 521 | de = f2fs_find_entry(dir, &dentry->d_name, &page); |
91246c21 CY |
522 | if (!de) { |
523 | if (IS_ERR(page)) | |
524 | err = PTR_ERR(page); | |
57397d86 | 525 | goto fail; |
91246c21 | 526 | } |
57397d86 | 527 | |
2c4db1a6 | 528 | f2fs_balance_fs(sbi, true); |
00623e6b | 529 | |
ccaaca25 | 530 | f2fs_lock_op(sbi); |
4d57b86d | 531 | err = f2fs_acquire_orphan_inode(sbi); |
57397d86 | 532 | if (err) { |
ccaaca25 | 533 | f2fs_unlock_op(sbi); |
57397d86 JK |
534 | f2fs_put_page(page, 0); |
535 | goto fail; | |
536 | } | |
dbeacf02 | 537 | f2fs_delete_entry(de, page, dir, inode); |
e479556b | 538 | f2fs_unlock_op(sbi); |
57397d86 | 539 | |
b7e1d800 JK |
540 | if (IS_DIRSYNC(dir)) |
541 | f2fs_sync_fs(sbi->sb, 1); | |
57397d86 | 542 | fail: |
a2a4a7e4 | 543 | trace_f2fs_unlink_exit(inode, err); |
57397d86 JK |
544 | return err; |
545 | } | |
546 | ||
6b255391 | 547 | static const char *f2fs_get_link(struct dentry *dentry, |
fceef393 AV |
548 | struct inode *inode, |
549 | struct delayed_call *done) | |
feb7cbb0 | 550 | { |
fceef393 | 551 | const char *link = page_get_link(dentry, inode, done); |
680baacb AV |
552 | if (!IS_ERR(link) && !*link) { |
553 | /* this is broken symlink case */ | |
fceef393 AV |
554 | do_delayed_call(done); |
555 | clear_delayed_call(done); | |
680baacb | 556 | link = ERR_PTR(-ENOENT); |
feb7cbb0 | 557 | } |
680baacb | 558 | return link; |
feb7cbb0 JK |
559 | } |
560 | ||
57397d86 JK |
561 | static int f2fs_symlink(struct inode *dir, struct dentry *dentry, |
562 | const char *symname) | |
563 | { | |
4081363f | 564 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 | 565 | struct inode *inode; |
cbaf042a | 566 | size_t len = strlen(symname); |
393c038f | 567 | struct fscrypt_str disk_link; |
e479556b | 568 | int err; |
57397d86 | 569 | |
1f227a3e JK |
570 | if (unlikely(f2fs_cp_error(sbi))) |
571 | return -EIO; | |
4354994f DR |
572 | err = f2fs_is_checkpoint_ready(sbi); |
573 | if (err) | |
574 | return err; | |
1f227a3e | 575 | |
393c038f EB |
576 | err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize, |
577 | &disk_link); | |
578 | if (err) | |
579 | return err; | |
cbaf042a | 580 | |
0abd675e CY |
581 | err = dquot_initialize(dir); |
582 | if (err) | |
583 | return err; | |
584 | ||
57397d86 JK |
585 | inode = f2fs_new_inode(dir, S_IFLNK | S_IRWXUGO); |
586 | if (IS_ERR(inode)) | |
587 | return PTR_ERR(inode); | |
588 | ||
393c038f | 589 | if (IS_ENCRYPTED(inode)) |
cbaf042a JK |
590 | inode->i_op = &f2fs_encrypted_symlink_inode_operations; |
591 | else | |
592 | inode->i_op = &f2fs_symlink_inode_operations; | |
21fc61c7 | 593 | inode_nohighmem(inode); |
57397d86 JK |
594 | inode->i_mapping->a_ops = &f2fs_dblock_aops; |
595 | ||
e479556b | 596 | f2fs_lock_op(sbi); |
57397d86 JK |
597 | err = f2fs_add_link(dentry, inode); |
598 | if (err) | |
4d57b86d | 599 | goto out_f2fs_handle_failed_inode; |
44c16156 | 600 | f2fs_unlock_op(sbi); |
4d57b86d | 601 | f2fs_alloc_nid_done(sbi, inode->i_ino); |
57397d86 | 602 | |
393c038f EB |
603 | err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link); |
604 | if (err) | |
605 | goto err_out; | |
cbaf042a | 606 | |
922ec355 | 607 | err = page_symlink(inode, disk_link.name, disk_link.len); |
cbaf042a JK |
608 | |
609 | err_out: | |
1e2e547a | 610 | d_instantiate_new(dentry, inode); |
b7e1d800 | 611 | |
d0cae97c JK |
612 | /* |
613 | * Let's flush symlink data in order to avoid broken symlink as much as | |
614 | * possible. Nevertheless, fsyncing is the best way, but there is no | |
615 | * way to get a file descriptor in order to flush that. | |
616 | * | |
617 | * Note that, it needs to do dir->fsync to make this recoverable. | |
618 | * If the symlink path is stored into inline_data, there is no | |
619 | * performance regression. | |
620 | */ | |
a6be014e | 621 | if (!err) { |
922ec355 CY |
622 | filemap_write_and_wait_range(inode->i_mapping, 0, |
623 | disk_link.len - 1); | |
d0cae97c | 624 | |
a6be014e CY |
625 | if (IS_DIRSYNC(dir)) |
626 | f2fs_sync_fs(sbi->sb, 1); | |
627 | } else { | |
628 | f2fs_unlink(dir, dentry); | |
629 | } | |
cbaf042a | 630 | |
9bb02c36 | 631 | f2fs_balance_fs(sbi, true); |
393c038f EB |
632 | goto out_free_encrypted_link; |
633 | ||
4d57b86d CY |
634 | out_f2fs_handle_failed_inode: |
635 | f2fs_handle_failed_inode(inode); | |
393c038f EB |
636 | out_free_encrypted_link: |
637 | if (disk_link.name != (unsigned char *)symname) | |
638 | kfree(disk_link.name); | |
57397d86 JK |
639 | return err; |
640 | } | |
641 | ||
642 | static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) | |
643 | { | |
4081363f | 644 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 | 645 | struct inode *inode; |
e479556b | 646 | int err; |
57397d86 | 647 | |
1f227a3e JK |
648 | if (unlikely(f2fs_cp_error(sbi))) |
649 | return -EIO; | |
650 | ||
0abd675e CY |
651 | err = dquot_initialize(dir); |
652 | if (err) | |
653 | return err; | |
654 | ||
57397d86 | 655 | inode = f2fs_new_inode(dir, S_IFDIR | mode); |
57397d86 | 656 | if (IS_ERR(inode)) |
61412b64 | 657 | return PTR_ERR(inode); |
57397d86 JK |
658 | |
659 | inode->i_op = &f2fs_dir_inode_operations; | |
660 | inode->i_fop = &f2fs_dir_operations; | |
661 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
bdbc90fa | 662 | inode_nohighmem(inode); |
57397d86 | 663 | |
91942321 | 664 | set_inode_flag(inode, FI_INC_LINK); |
e479556b | 665 | f2fs_lock_op(sbi); |
57397d86 JK |
666 | err = f2fs_add_link(dentry, inode); |
667 | if (err) | |
668 | goto out_fail; | |
44c16156 | 669 | f2fs_unlock_op(sbi); |
57397d86 | 670 | |
4d57b86d | 671 | f2fs_alloc_nid_done(sbi, inode->i_ino); |
57397d86 | 672 | |
1e2e547a | 673 | d_instantiate_new(dentry, inode); |
57397d86 | 674 | |
b7e1d800 JK |
675 | if (IS_DIRSYNC(dir)) |
676 | f2fs_sync_fs(sbi->sb, 1); | |
9bb02c36 JK |
677 | |
678 | f2fs_balance_fs(sbi, true); | |
57397d86 JK |
679 | return 0; |
680 | ||
681 | out_fail: | |
91942321 | 682 | clear_inode_flag(inode, FI_INC_LINK); |
4d57b86d | 683 | f2fs_handle_failed_inode(inode); |
57397d86 JK |
684 | return err; |
685 | } | |
686 | ||
687 | static int f2fs_rmdir(struct inode *dir, struct dentry *dentry) | |
688 | { | |
2b0143b5 | 689 | struct inode *inode = d_inode(dentry); |
57397d86 JK |
690 | if (f2fs_empty_dir(inode)) |
691 | return f2fs_unlink(dir, dentry); | |
692 | return -ENOTEMPTY; | |
693 | } | |
694 | ||
695 | static int f2fs_mknod(struct inode *dir, struct dentry *dentry, | |
696 | umode_t mode, dev_t rdev) | |
697 | { | |
4081363f | 698 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 JK |
699 | struct inode *inode; |
700 | int err = 0; | |
701 | ||
1f227a3e JK |
702 | if (unlikely(f2fs_cp_error(sbi))) |
703 | return -EIO; | |
4354994f DR |
704 | err = f2fs_is_checkpoint_ready(sbi); |
705 | if (err) | |
706 | return err; | |
1f227a3e | 707 | |
0abd675e CY |
708 | err = dquot_initialize(dir); |
709 | if (err) | |
710 | return err; | |
711 | ||
57397d86 JK |
712 | inode = f2fs_new_inode(dir, mode); |
713 | if (IS_ERR(inode)) | |
714 | return PTR_ERR(inode); | |
715 | ||
716 | init_special_inode(inode, inode->i_mode, rdev); | |
717 | inode->i_op = &f2fs_special_inode_operations; | |
718 | ||
e479556b | 719 | f2fs_lock_op(sbi); |
57397d86 JK |
720 | err = f2fs_add_link(dentry, inode); |
721 | if (err) | |
722 | goto out; | |
44c16156 | 723 | f2fs_unlock_op(sbi); |
57397d86 | 724 | |
4d57b86d | 725 | f2fs_alloc_nid_done(sbi, inode->i_ino); |
b7e1d800 | 726 | |
1e2e547a | 727 | d_instantiate_new(dentry, inode); |
b7e1d800 JK |
728 | |
729 | if (IS_DIRSYNC(dir)) | |
730 | f2fs_sync_fs(sbi->sb, 1); | |
9bb02c36 JK |
731 | |
732 | f2fs_balance_fs(sbi, true); | |
57397d86 JK |
733 | return 0; |
734 | out: | |
4d57b86d | 735 | f2fs_handle_failed_inode(inode); |
57397d86 JK |
736 | return err; |
737 | } | |
738 | ||
7e01e7ad CY |
739 | static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry, |
740 | umode_t mode, struct inode **whiteout) | |
741 | { | |
742 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
743 | struct inode *inode; | |
744 | int err; | |
745 | ||
0abd675e CY |
746 | err = dquot_initialize(dir); |
747 | if (err) | |
748 | return err; | |
749 | ||
7e01e7ad CY |
750 | inode = f2fs_new_inode(dir, mode); |
751 | if (IS_ERR(inode)) | |
752 | return PTR_ERR(inode); | |
753 | ||
754 | if (whiteout) { | |
755 | init_special_inode(inode, inode->i_mode, WHITEOUT_DEV); | |
756 | inode->i_op = &f2fs_special_inode_operations; | |
757 | } else { | |
758 | inode->i_op = &f2fs_file_inode_operations; | |
759 | inode->i_fop = &f2fs_file_operations; | |
760 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
761 | } | |
762 | ||
763 | f2fs_lock_op(sbi); | |
4d57b86d | 764 | err = f2fs_acquire_orphan_inode(sbi); |
7e01e7ad CY |
765 | if (err) |
766 | goto out; | |
767 | ||
768 | err = f2fs_do_tmpfile(inode, dir); | |
769 | if (err) | |
770 | goto release_out; | |
771 | ||
772 | /* | |
773 | * add this non-linked tmpfile to orphan list, in this way we could | |
774 | * remove all unused data of tmpfile after abnormal power-off. | |
775 | */ | |
4d57b86d CY |
776 | f2fs_add_orphan_inode(inode); |
777 | f2fs_alloc_nid_done(sbi, inode->i_ino); | |
7e01e7ad CY |
778 | |
779 | if (whiteout) { | |
a1961246 | 780 | f2fs_i_links_write(inode, false); |
7e01e7ad CY |
781 | *whiteout = inode; |
782 | } else { | |
783 | d_tmpfile(dentry, inode); | |
784 | } | |
a1961246 JK |
785 | /* link_count was changed by d_tmpfile as well. */ |
786 | f2fs_unlock_op(sbi); | |
7e01e7ad | 787 | unlock_new_inode(inode); |
9bb02c36 JK |
788 | |
789 | f2fs_balance_fs(sbi, true); | |
7e01e7ad CY |
790 | return 0; |
791 | ||
792 | release_out: | |
4d57b86d | 793 | f2fs_release_orphan_inode(sbi); |
7e01e7ad | 794 | out: |
4d57b86d | 795 | f2fs_handle_failed_inode(inode); |
7e01e7ad CY |
796 | return err; |
797 | } | |
798 | ||
799 | static int f2fs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) | |
800 | { | |
ff62af20 SY |
801 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
802 | ||
803 | if (unlikely(f2fs_cp_error(sbi))) | |
1f227a3e JK |
804 | return -EIO; |
805 | ||
ff62af20 | 806 | if (f2fs_encrypted_inode(dir) || DUMMY_ENCRYPTION_ENABLED(sbi)) { |
0b81d077 | 807 | int err = fscrypt_get_encryption_info(dir); |
304eecc3 JK |
808 | if (err) |
809 | return err; | |
810 | } | |
811 | ||
7e01e7ad CY |
812 | return __f2fs_tmpfile(dir, dentry, mode, NULL); |
813 | } | |
814 | ||
815 | static int f2fs_create_whiteout(struct inode *dir, struct inode **whiteout) | |
816 | { | |
1f227a3e JK |
817 | if (unlikely(f2fs_cp_error(F2FS_I_SB(dir)))) |
818 | return -EIO; | |
819 | ||
7e01e7ad CY |
820 | return __f2fs_tmpfile(dir, NULL, S_IFCHR | WHITEOUT_MODE, whiteout); |
821 | } | |
822 | ||
57397d86 | 823 | static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, |
7e01e7ad CY |
824 | struct inode *new_dir, struct dentry *new_dentry, |
825 | unsigned int flags) | |
57397d86 | 826 | { |
4081363f | 827 | struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir); |
2b0143b5 DH |
828 | struct inode *old_inode = d_inode(old_dentry); |
829 | struct inode *new_inode = d_inode(new_dentry); | |
7e01e7ad | 830 | struct inode *whiteout = NULL; |
57397d86 | 831 | struct page *old_dir_page; |
7e01e7ad | 832 | struct page *old_page, *new_page = NULL; |
57397d86 JK |
833 | struct f2fs_dir_entry *old_dir_entry = NULL; |
834 | struct f2fs_dir_entry *old_entry; | |
835 | struct f2fs_dir_entry *new_entry; | |
993a0499 | 836 | bool is_old_inline = f2fs_has_inline_dentry(old_dir); |
d83d0f5b | 837 | int err; |
57397d86 | 838 | |
1f227a3e JK |
839 | if (unlikely(f2fs_cp_error(sbi))) |
840 | return -EIO; | |
4354994f DR |
841 | err = f2fs_is_checkpoint_ready(sbi); |
842 | if (err) | |
843 | return err; | |
1f227a3e | 844 | |
5c57132e CY |
845 | if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && |
846 | (!projid_eq(F2FS_I(new_dir)->i_projid, | |
847 | F2FS_I(old_dentry->d_inode)->i_projid))) | |
848 | return -EXDEV; | |
849 | ||
0abd675e CY |
850 | err = dquot_initialize(old_dir); |
851 | if (err) | |
852 | goto out; | |
853 | ||
854 | err = dquot_initialize(new_dir); | |
855 | if (err) | |
856 | goto out; | |
857 | ||
d8d1389e JK |
858 | if (new_inode) { |
859 | err = dquot_initialize(new_inode); | |
860 | if (err) | |
861 | goto out; | |
862 | } | |
863 | ||
d83d0f5b | 864 | err = -ENOENT; |
57397d86 | 865 | old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page); |
91246c21 CY |
866 | if (!old_entry) { |
867 | if (IS_ERR(old_page)) | |
868 | err = PTR_ERR(old_page); | |
57397d86 | 869 | goto out; |
91246c21 | 870 | } |
57397d86 JK |
871 | |
872 | if (S_ISDIR(old_inode->i_mode)) { | |
57397d86 | 873 | old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page); |
3e19886e | 874 | if (!old_dir_entry) { |
91246c21 CY |
875 | if (IS_ERR(old_dir_page)) |
876 | err = PTR_ERR(old_dir_page); | |
57397d86 | 877 | goto out_old; |
3e19886e | 878 | } |
57397d86 JK |
879 | } |
880 | ||
7e01e7ad CY |
881 | if (flags & RENAME_WHITEOUT) { |
882 | err = f2fs_create_whiteout(old_dir, &whiteout); | |
883 | if (err) | |
884 | goto out_dir; | |
885 | } | |
886 | ||
57397d86 | 887 | if (new_inode) { |
57397d86 JK |
888 | |
889 | err = -ENOTEMPTY; | |
890 | if (old_dir_entry && !f2fs_empty_dir(new_inode)) | |
7e01e7ad | 891 | goto out_whiteout; |
57397d86 JK |
892 | |
893 | err = -ENOENT; | |
894 | new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, | |
895 | &new_page); | |
91246c21 CY |
896 | if (!new_entry) { |
897 | if (IS_ERR(new_page)) | |
898 | err = PTR_ERR(new_page); | |
7e01e7ad | 899 | goto out_whiteout; |
91246c21 | 900 | } |
57397d86 | 901 | |
2c4db1a6 | 902 | f2fs_balance_fs(sbi, true); |
00623e6b | 903 | |
1256010a CY |
904 | f2fs_lock_op(sbi); |
905 | ||
4d57b86d | 906 | err = f2fs_acquire_orphan_inode(sbi); |
cbd56e7d JK |
907 | if (err) |
908 | goto put_out_dir; | |
909 | ||
57397d86 JK |
910 | f2fs_set_link(new_dir, new_entry, new_page, old_inode); |
911 | ||
078cd827 | 912 | new_inode->i_ctime = current_time(new_inode); |
d928bfbf | 913 | down_write(&F2FS_I(new_inode)->i_sem); |
57397d86 | 914 | if (old_dir_entry) |
a1961246 JK |
915 | f2fs_i_links_write(new_inode, false); |
916 | f2fs_i_links_write(new_inode, false); | |
d928bfbf JK |
917 | up_write(&F2FS_I(new_inode)->i_sem); |
918 | ||
57397d86 | 919 | if (!new_inode->i_nlink) |
4d57b86d | 920 | f2fs_add_orphan_inode(new_inode); |
cbd56e7d | 921 | else |
4d57b86d | 922 | f2fs_release_orphan_inode(sbi); |
57397d86 | 923 | } else { |
2c4db1a6 | 924 | f2fs_balance_fs(sbi, true); |
00623e6b | 925 | |
1256010a CY |
926 | f2fs_lock_op(sbi); |
927 | ||
57397d86 | 928 | err = f2fs_add_link(new_dentry, old_inode); |
1256010a CY |
929 | if (err) { |
930 | f2fs_unlock_op(sbi); | |
7e01e7ad | 931 | goto out_whiteout; |
1256010a | 932 | } |
57397d86 | 933 | |
ee6d182f | 934 | if (old_dir_entry) |
a1961246 | 935 | f2fs_i_links_write(new_dir, true); |
993a0499 CY |
936 | |
937 | /* | |
938 | * old entry and new entry can locate in the same inline | |
939 | * dentry in inode, when attaching new entry in inline dentry, | |
940 | * it could force inline dentry conversion, after that, | |
941 | * old_entry and old_page will point to wrong address, in | |
942 | * order to avoid this, let's do the check and update here. | |
943 | */ | |
944 | if (is_old_inline && !f2fs_has_inline_dentry(old_dir)) { | |
945 | f2fs_put_page(old_page, 0); | |
946 | old_page = NULL; | |
947 | ||
948 | old_entry = f2fs_find_entry(old_dir, | |
949 | &old_dentry->d_name, &old_page); | |
950 | if (!old_entry) { | |
91246c21 CY |
951 | err = -ENOENT; |
952 | if (IS_ERR(old_page)) | |
953 | err = PTR_ERR(old_page); | |
993a0499 CY |
954 | f2fs_unlock_op(sbi); |
955 | goto out_whiteout; | |
956 | } | |
957 | } | |
57397d86 JK |
958 | } |
959 | ||
b2c08299 | 960 | down_write(&F2FS_I(old_inode)->i_sem); |
b855bf0e SY |
961 | if (!old_dir_entry || whiteout) |
962 | file_lost_pino(old_inode); | |
963 | else | |
964 | F2FS_I(old_inode)->i_pino = new_dir->i_ino; | |
b2c08299 JK |
965 | up_write(&F2FS_I(old_inode)->i_sem); |
966 | ||
078cd827 | 967 | old_inode->i_ctime = current_time(old_inode); |
7c45729a | 968 | f2fs_mark_inode_dirty_sync(old_inode, false); |
57397d86 | 969 | |
dbeacf02 | 970 | f2fs_delete_entry(old_entry, old_page, old_dir, NULL); |
57397d86 | 971 | |
7e01e7ad CY |
972 | if (whiteout) { |
973 | whiteout->i_state |= I_LINKABLE; | |
91942321 | 974 | set_inode_flag(whiteout, FI_INC_LINK); |
7e01e7ad CY |
975 | err = f2fs_add_link(old_dentry, whiteout); |
976 | if (err) | |
977 | goto put_out_dir; | |
978 | whiteout->i_state &= ~I_LINKABLE; | |
979 | iput(whiteout); | |
980 | } | |
981 | ||
57397d86 | 982 | if (old_dir_entry) { |
bdbc90fa | 983 | if (old_dir != new_dir && !whiteout) |
57397d86 JK |
984 | f2fs_set_link(old_inode, old_dir_entry, |
985 | old_dir_page, new_dir); | |
bdbc90fa | 986 | else |
57397d86 | 987 | f2fs_put_page(old_dir_page, 0); |
a1961246 | 988 | f2fs_i_links_write(old_dir, false); |
57397d86 | 989 | } |
ade990f9 | 990 | if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) { |
4d57b86d | 991 | f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO); |
ade990f9 | 992 | if (S_ISDIR(old_inode->i_mode)) |
4d57b86d CY |
993 | f2fs_add_ino_entry(sbi, old_inode->i_ino, |
994 | TRANS_DIR_INO); | |
ade990f9 | 995 | } |
57397d86 | 996 | |
e479556b | 997 | f2fs_unlock_op(sbi); |
b7e1d800 JK |
998 | |
999 | if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) | |
1000 | f2fs_sync_fs(sbi->sb, 1); | |
6390398e ST |
1001 | |
1002 | f2fs_update_time(sbi, REQ_TIME); | |
57397d86 JK |
1003 | return 0; |
1004 | ||
cbd56e7d | 1005 | put_out_dir: |
1256010a | 1006 | f2fs_unlock_op(sbi); |
bdbc90fa | 1007 | if (new_page) |
7e01e7ad | 1008 | f2fs_put_page(new_page, 0); |
7e01e7ad CY |
1009 | out_whiteout: |
1010 | if (whiteout) | |
1011 | iput(whiteout); | |
57397d86 | 1012 | out_dir: |
bdbc90fa | 1013 | if (old_dir_entry) |
57397d86 | 1014 | f2fs_put_page(old_dir_page, 0); |
57397d86 | 1015 | out_old: |
57397d86 JK |
1016 | f2fs_put_page(old_page, 0); |
1017 | out: | |
1018 | return err; | |
1019 | } | |
1020 | ||
32f9bc25 CY |
1021 | static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry, |
1022 | struct inode *new_dir, struct dentry *new_dentry) | |
1023 | { | |
4081363f | 1024 | struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir); |
2b0143b5 DH |
1025 | struct inode *old_inode = d_inode(old_dentry); |
1026 | struct inode *new_inode = d_inode(new_dentry); | |
32f9bc25 CY |
1027 | struct page *old_dir_page, *new_dir_page; |
1028 | struct page *old_page, *new_page; | |
1029 | struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL; | |
1030 | struct f2fs_dir_entry *old_entry, *new_entry; | |
1031 | int old_nlink = 0, new_nlink = 0; | |
d83d0f5b | 1032 | int err; |
363fa4e0 | 1033 | |
1f227a3e JK |
1034 | if (unlikely(f2fs_cp_error(sbi))) |
1035 | return -EIO; | |
4354994f DR |
1036 | err = f2fs_is_checkpoint_ready(sbi); |
1037 | if (err) | |
1038 | return err; | |
1f227a3e | 1039 | |
5c57132e CY |
1040 | if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && |
1041 | !projid_eq(F2FS_I(new_dir)->i_projid, | |
1042 | F2FS_I(old_dentry->d_inode)->i_projid)) || | |
1043 | (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && | |
1044 | !projid_eq(F2FS_I(old_dir)->i_projid, | |
1045 | F2FS_I(new_dentry->d_inode)->i_projid))) | |
1046 | return -EXDEV; | |
1047 | ||
0abd675e CY |
1048 | err = dquot_initialize(old_dir); |
1049 | if (err) | |
1050 | goto out; | |
1051 | ||
1052 | err = dquot_initialize(new_dir); | |
1053 | if (err) | |
1054 | goto out; | |
1055 | ||
d83d0f5b | 1056 | err = -ENOENT; |
32f9bc25 | 1057 | old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page); |
91246c21 CY |
1058 | if (!old_entry) { |
1059 | if (IS_ERR(old_page)) | |
1060 | err = PTR_ERR(old_page); | |
32f9bc25 | 1061 | goto out; |
91246c21 | 1062 | } |
32f9bc25 CY |
1063 | |
1064 | new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page); | |
91246c21 CY |
1065 | if (!new_entry) { |
1066 | if (IS_ERR(new_page)) | |
1067 | err = PTR_ERR(new_page); | |
32f9bc25 | 1068 | goto out_old; |
91246c21 | 1069 | } |
32f9bc25 CY |
1070 | |
1071 | /* prepare for updating ".." directory entry info later */ | |
1072 | if (old_dir != new_dir) { | |
1073 | if (S_ISDIR(old_inode->i_mode)) { | |
32f9bc25 CY |
1074 | old_dir_entry = f2fs_parent_dir(old_inode, |
1075 | &old_dir_page); | |
3e19886e | 1076 | if (!old_dir_entry) { |
91246c21 CY |
1077 | if (IS_ERR(old_dir_page)) |
1078 | err = PTR_ERR(old_dir_page); | |
32f9bc25 | 1079 | goto out_new; |
3e19886e | 1080 | } |
32f9bc25 CY |
1081 | } |
1082 | ||
1083 | if (S_ISDIR(new_inode->i_mode)) { | |
32f9bc25 CY |
1084 | new_dir_entry = f2fs_parent_dir(new_inode, |
1085 | &new_dir_page); | |
3e19886e | 1086 | if (!new_dir_entry) { |
91246c21 CY |
1087 | if (IS_ERR(new_dir_page)) |
1088 | err = PTR_ERR(new_dir_page); | |
32f9bc25 | 1089 | goto out_old_dir; |
3e19886e | 1090 | } |
32f9bc25 CY |
1091 | } |
1092 | } | |
1093 | ||
1094 | /* | |
1095 | * If cross rename between file and directory those are not | |
1096 | * in the same directory, we will inc nlink of file's parent | |
1097 | * later, so we should check upper boundary of its nlink. | |
1098 | */ | |
1099 | if ((!old_dir_entry || !new_dir_entry) && | |
1100 | old_dir_entry != new_dir_entry) { | |
1101 | old_nlink = old_dir_entry ? -1 : 1; | |
1102 | new_nlink = -old_nlink; | |
1103 | err = -EMLINK; | |
e2f0e962 KM |
1104 | if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) || |
1105 | (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX)) | |
32f9bc25 CY |
1106 | goto out_new_dir; |
1107 | } | |
1108 | ||
2c4db1a6 | 1109 | f2fs_balance_fs(sbi, true); |
00623e6b | 1110 | |
32f9bc25 CY |
1111 | f2fs_lock_op(sbi); |
1112 | ||
32f9bc25 CY |
1113 | /* update ".." directory entry info of old dentry */ |
1114 | if (old_dir_entry) | |
1115 | f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir); | |
1116 | ||
1117 | /* update ".." directory entry info of new dentry */ | |
1118 | if (new_dir_entry) | |
1119 | f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir); | |
1120 | ||
1121 | /* update directory entry info of old dir inode */ | |
1122 | f2fs_set_link(old_dir, old_entry, old_page, new_inode); | |
1123 | ||
1124 | down_write(&F2FS_I(old_inode)->i_sem); | |
1125 | file_lost_pino(old_inode); | |
1126 | up_write(&F2FS_I(old_inode)->i_sem); | |
1127 | ||
078cd827 | 1128 | old_dir->i_ctime = current_time(old_dir); |
32f9bc25 CY |
1129 | if (old_nlink) { |
1130 | down_write(&F2FS_I(old_dir)->i_sem); | |
a1961246 | 1131 | f2fs_i_links_write(old_dir, old_nlink > 0); |
32f9bc25 CY |
1132 | up_write(&F2FS_I(old_dir)->i_sem); |
1133 | } | |
7c45729a | 1134 | f2fs_mark_inode_dirty_sync(old_dir, false); |
32f9bc25 CY |
1135 | |
1136 | /* update directory entry info of new dir inode */ | |
1137 | f2fs_set_link(new_dir, new_entry, new_page, old_inode); | |
1138 | ||
1139 | down_write(&F2FS_I(new_inode)->i_sem); | |
1140 | file_lost_pino(new_inode); | |
1141 | up_write(&F2FS_I(new_inode)->i_sem); | |
1142 | ||
078cd827 | 1143 | new_dir->i_ctime = current_time(new_dir); |
32f9bc25 CY |
1144 | if (new_nlink) { |
1145 | down_write(&F2FS_I(new_dir)->i_sem); | |
a1961246 | 1146 | f2fs_i_links_write(new_dir, new_nlink > 0); |
32f9bc25 CY |
1147 | up_write(&F2FS_I(new_dir)->i_sem); |
1148 | } | |
7c45729a | 1149 | f2fs_mark_inode_dirty_sync(new_dir, false); |
32f9bc25 | 1150 | |
63189b78 | 1151 | if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) { |
4d57b86d CY |
1152 | f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO); |
1153 | f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO); | |
93cf93f1 | 1154 | } |
0a007b97 | 1155 | |
32f9bc25 | 1156 | f2fs_unlock_op(sbi); |
b7e1d800 JK |
1157 | |
1158 | if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) | |
1159 | f2fs_sync_fs(sbi->sb, 1); | |
6390398e ST |
1160 | |
1161 | f2fs_update_time(sbi, REQ_TIME); | |
32f9bc25 | 1162 | return 0; |
32f9bc25 CY |
1163 | out_new_dir: |
1164 | if (new_dir_entry) { | |
32f9bc25 CY |
1165 | f2fs_put_page(new_dir_page, 0); |
1166 | } | |
1167 | out_old_dir: | |
1168 | if (old_dir_entry) { | |
32f9bc25 CY |
1169 | f2fs_put_page(old_dir_page, 0); |
1170 | } | |
1171 | out_new: | |
32f9bc25 CY |
1172 | f2fs_put_page(new_page, 0); |
1173 | out_old: | |
32f9bc25 CY |
1174 | f2fs_put_page(old_page, 0); |
1175 | out: | |
1176 | return err; | |
1177 | } | |
1178 | ||
1179 | static int f2fs_rename2(struct inode *old_dir, struct dentry *old_dentry, | |
1180 | struct inode *new_dir, struct dentry *new_dentry, | |
1181 | unsigned int flags) | |
1182 | { | |
2e45b07f EB |
1183 | int err; |
1184 | ||
7e01e7ad | 1185 | if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT)) |
32f9bc25 CY |
1186 | return -EINVAL; |
1187 | ||
2e45b07f EB |
1188 | err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry, |
1189 | flags); | |
1190 | if (err) | |
1191 | return err; | |
1192 | ||
32f9bc25 CY |
1193 | if (flags & RENAME_EXCHANGE) { |
1194 | return f2fs_cross_rename(old_dir, old_dentry, | |
1195 | new_dir, new_dentry); | |
1196 | } | |
1197 | /* | |
1198 | * VFS has already handled the new dentry existence case, | |
1199 | * here, we just deal with "RENAME_NOREPLACE" as regular rename. | |
1200 | */ | |
7e01e7ad | 1201 | return f2fs_rename(old_dir, old_dentry, new_dir, new_dentry, flags); |
32f9bc25 CY |
1202 | } |
1203 | ||
6b255391 | 1204 | static const char *f2fs_encrypted_get_link(struct dentry *dentry, |
fceef393 AV |
1205 | struct inode *inode, |
1206 | struct delayed_call *done) | |
50732df0 | 1207 | { |
f2329cb6 EB |
1208 | struct page *page; |
1209 | const char *target; | |
cbaf042a | 1210 | |
6b255391 AV |
1211 | if (!dentry) |
1212 | return ERR_PTR(-ECHILD); | |
1213 | ||
f2329cb6 EB |
1214 | page = read_mapping_page(inode->i_mapping, 0, NULL); |
1215 | if (IS_ERR(page)) | |
1216 | return ERR_CAST(page); | |
cbaf042a | 1217 | |
f2329cb6 EB |
1218 | target = fscrypt_get_symlink(inode, page_address(page), |
1219 | inode->i_sb->s_blocksize, done); | |
1220 | put_page(page); | |
1221 | return target; | |
50732df0 CY |
1222 | } |
1223 | ||
cbaf042a | 1224 | const struct inode_operations f2fs_encrypted_symlink_inode_operations = { |
6b255391 | 1225 | .get_link = f2fs_encrypted_get_link, |
cbaf042a JK |
1226 | .getattr = f2fs_getattr, |
1227 | .setattr = f2fs_setattr, | |
3a9e6433 | 1228 | #ifdef CONFIG_F2FS_FS_XATTR |
cbaf042a | 1229 | .listxattr = f2fs_listxattr, |
3a9e6433 | 1230 | #endif |
cbaf042a | 1231 | }; |
cbaf042a | 1232 | |
57397d86 JK |
1233 | const struct inode_operations f2fs_dir_inode_operations = { |
1234 | .create = f2fs_create, | |
1235 | .lookup = f2fs_lookup, | |
1236 | .link = f2fs_link, | |
1237 | .unlink = f2fs_unlink, | |
1238 | .symlink = f2fs_symlink, | |
1239 | .mkdir = f2fs_mkdir, | |
1240 | .rmdir = f2fs_rmdir, | |
1241 | .mknod = f2fs_mknod, | |
2773bf00 | 1242 | .rename = f2fs_rename2, |
50732df0 | 1243 | .tmpfile = f2fs_tmpfile, |
2d4d9fb5 | 1244 | .getattr = f2fs_getattr, |
57397d86 JK |
1245 | .setattr = f2fs_setattr, |
1246 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 1247 | .set_acl = f2fs_set_acl, |
57397d86 | 1248 | #ifdef CONFIG_F2FS_FS_XATTR |
57397d86 | 1249 | .listxattr = f2fs_listxattr, |
57397d86 JK |
1250 | #endif |
1251 | }; | |
1252 | ||
1253 | const struct inode_operations f2fs_symlink_inode_operations = { | |
6b255391 | 1254 | .get_link = f2fs_get_link, |
2d4d9fb5 | 1255 | .getattr = f2fs_getattr, |
57397d86 JK |
1256 | .setattr = f2fs_setattr, |
1257 | #ifdef CONFIG_F2FS_FS_XATTR | |
57397d86 | 1258 | .listxattr = f2fs_listxattr, |
57397d86 JK |
1259 | #endif |
1260 | }; | |
1261 | ||
1262 | const struct inode_operations f2fs_special_inode_operations = { | |
2d4d9fb5 | 1263 | .getattr = f2fs_getattr, |
57397d86 JK |
1264 | .setattr = f2fs_setattr, |
1265 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 1266 | .set_acl = f2fs_set_acl, |
57397d86 | 1267 | #ifdef CONFIG_F2FS_FS_XATTR |
57397d86 | 1268 | .listxattr = f2fs_listxattr, |
57397d86 JK |
1269 | #endif |
1270 | }; |