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> | |
428e3bcf | 13 | #include <linux/random.h> |
50732df0 | 14 | #include <linux/dcache.h> |
feb7cbb0 | 15 | #include <linux/namei.h> |
0abd675e | 16 | #include <linux/quotaops.h> |
57397d86 JK |
17 | |
18 | #include "f2fs.h" | |
953a3e27 | 19 | #include "node.h" |
4354994f | 20 | #include "segment.h" |
57397d86 JK |
21 | #include "xattr.h" |
22 | #include "acl.h" | |
a2a4a7e4 | 23 | #include <trace/events/f2fs.h> |
57397d86 JK |
24 | |
25 | static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode) | |
26 | { | |
4081363f | 27 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 JK |
28 | nid_t ino; |
29 | struct inode *inode; | |
30 | bool nid_free = false; | |
6afc662e | 31 | int xattr_size = 0; |
e479556b | 32 | int err; |
57397d86 | 33 | |
a014e037 | 34 | inode = new_inode(dir->i_sb); |
57397d86 JK |
35 | if (!inode) |
36 | return ERR_PTR(-ENOMEM); | |
37 | ||
e479556b | 38 | f2fs_lock_op(sbi); |
4d57b86d | 39 | if (!f2fs_alloc_nid(sbi, &ino)) { |
e479556b | 40 | f2fs_unlock_op(sbi); |
57397d86 JK |
41 | err = -ENOSPC; |
42 | goto fail; | |
43 | } | |
e479556b | 44 | f2fs_unlock_op(sbi); |
57397d86 | 45 | |
0abd675e CY |
46 | nid_free = true; |
47 | ||
70ff5dfe | 48 | inode_init_owner(inode, dir, mode); |
57397d86 JK |
49 | |
50 | inode->i_ino = ino; | |
57397d86 | 51 | inode->i_blocks = 0; |
95582b00 | 52 | inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); |
24b81dfc | 53 | F2FS_I(inode)->i_crtime = inode->i_mtime; |
428e3bcf | 54 | inode->i_generation = prandom_u32(); |
57397d86 | 55 | |
1c41e680 CY |
56 | if (S_ISDIR(inode->i_mode)) |
57 | F2FS_I(inode)->i_current_depth = 1; | |
58 | ||
57397d86 JK |
59 | err = insert_inode_locked(inode); |
60 | if (err) { | |
61 | err = -EINVAL; | |
a21c20f0 | 62 | goto fail; |
57397d86 | 63 | } |
622f28ae | 64 | |
7beb01f7 | 65 | if (f2fs_sb_has_project_quota(sbi) && |
59c84408 | 66 | (F2FS_I(dir)->i_flags & F2FS_PROJINHERIT_FL)) |
5c57132e CY |
67 | F2FS_I(inode)->i_projid = F2FS_I(dir)->i_projid; |
68 | else | |
69 | F2FS_I(inode)->i_projid = make_kprojid(&init_user_ns, | |
70 | F2FS_DEF_PROJID); | |
71 | ||
0abd675e CY |
72 | err = dquot_initialize(inode); |
73 | if (err) | |
74 | goto fail_drop; | |
75 | ||
9ac1e2d8 DJ |
76 | set_inode_flag(inode, FI_NEW_INODE); |
77 | ||
8c7d4b57 | 78 | if (f2fs_may_encrypt(dir, inode)) |
fcc85a4d JK |
79 | f2fs_set_encrypted_inode(inode); |
80 | ||
7beb01f7 | 81 | if (f2fs_sb_has_extra_attr(sbi)) { |
7a2af766 CY |
82 | set_inode_flag(inode, FI_EXTRA_ATTR); |
83 | F2FS_I(inode)->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE; | |
84 | } | |
85 | ||
91942321 JK |
86 | if (test_opt(sbi, INLINE_XATTR)) |
87 | set_inode_flag(inode, FI_INLINE_XATTR); | |
6afc662e | 88 | |
fba48a8b | 89 | if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode)) |
91942321 | 90 | set_inode_flag(inode, FI_INLINE_DATA); |
01b960e9 | 91 | if (f2fs_may_inline_dentry(inode)) |
91942321 | 92 | set_inode_flag(inode, FI_INLINE_DENTRY); |
622f28ae | 93 | |
7beb01f7 | 94 | if (f2fs_sb_has_flexible_inline_xattr(sbi)) { |
6afc662e CY |
95 | f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode)); |
96 | if (f2fs_has_inline_xattr(inode)) | |
63189b78 | 97 | xattr_size = F2FS_OPTION(sbi).inline_xattr_size; |
6afc662e CY |
98 | /* Otherwise, will be 0 */ |
99 | } else if (f2fs_has_inline_xattr(inode) || | |
100 | f2fs_has_inline_dentry(inode)) { | |
101 | xattr_size = DEFAULT_INLINE_XATTR_ADDRS; | |
102 | } | |
103 | F2FS_I(inode)->i_inline_xattr_size = xattr_size; | |
104 | ||
3e72f721 JK |
105 | f2fs_init_extent_tree(inode, NULL); |
106 | ||
d5e8f6c9 | 107 | stat_inc_inline_xattr(inode); |
2fb2c954 JK |
108 | stat_inc_inline_inode(inode); |
109 | stat_inc_inline_dir(inode); | |
110 | ||
5c57132e CY |
111 | F2FS_I(inode)->i_flags = |
112 | f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED); | |
113 | ||
11f5020d | 114 | if (S_ISDIR(inode->i_mode)) |
59c84408 | 115 | F2FS_I(inode)->i_flags |= F2FS_INDEX_FL; |
11f5020d | 116 | |
59c84408 | 117 | if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL) |
5c57132e CY |
118 | set_inode_flag(inode, FI_PROJ_INHERIT); |
119 | ||
4c8ff709 CY |
120 | if (f2fs_sb_has_compression(sbi)) { |
121 | /* Inherit the compression flag in directory */ | |
122 | if ((F2FS_I(dir)->i_flags & F2FS_COMPR_FL) && | |
123 | f2fs_may_compress(inode)) | |
124 | set_compress_context(inode); | |
125 | } | |
126 | ||
9149a5eb CY |
127 | f2fs_set_inode_flags(inode); |
128 | ||
d70b4f53 | 129 | trace_f2fs_new_inode(inode, 0); |
57397d86 JK |
130 | return inode; |
131 | ||
57397d86 | 132 | fail: |
d70b4f53 | 133 | trace_f2fs_new_inode(inode, err); |
531ad7d5 | 134 | make_bad_inode(inode); |
57397d86 | 135 | if (nid_free) |
91942321 | 136 | set_inode_flag(inode, FI_FREE_NID); |
c9b63bd0 | 137 | iput(inode); |
57397d86 | 138 | return ERR_PTR(err); |
0abd675e CY |
139 | fail_drop: |
140 | trace_f2fs_new_inode(inode, err); | |
141 | dquot_drop(inode); | |
142 | inode->i_flags |= S_NOQUOTA; | |
143 | if (nid_free) | |
144 | set_inode_flag(inode, FI_FREE_NID); | |
145 | clear_nlink(inode); | |
146 | unlock_new_inode(inode); | |
147 | iput(inode); | |
148 | return ERR_PTR(err); | |
57397d86 JK |
149 | } |
150 | ||
5c533b19 | 151 | static inline int is_extension_exist(const unsigned char *s, const char *sub) |
57397d86 | 152 | { |
9836b8b9 LR |
153 | size_t slen = strlen(s); |
154 | size_t sublen = strlen(sub); | |
7732c26a | 155 | int i; |
57397d86 | 156 | |
4c8ff709 CY |
157 | if (sublen == 1 && *sub == '*') |
158 | return 1; | |
159 | ||
741a7bea CY |
160 | /* |
161 | * filename format of multimedia file should be defined as: | |
7732c26a | 162 | * "filename + '.' + extension + (optional: '.' + temp extension)". |
741a7bea CY |
163 | */ |
164 | if (slen < sublen + 2) | |
165 | return 0; | |
166 | ||
7732c26a CY |
167 | for (i = 1; i < slen - sublen; i++) { |
168 | if (s[i] != '.') | |
169 | continue; | |
170 | if (!strncasecmp(s + i + 1, sub, sublen)) | |
171 | return 1; | |
172 | } | |
57397d86 | 173 | |
7732c26a | 174 | return 0; |
57397d86 JK |
175 | } |
176 | ||
0a8165d7 | 177 | /* |
7a88ddb5 | 178 | * Set file's temperature for hot/cold data separation |
57397d86 | 179 | */ |
b6a06cbb | 180 | static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode, |
57397d86 JK |
181 | const unsigned char *name) |
182 | { | |
846ae671 | 183 | __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; |
b6a06cbb | 184 | int i, cold_count, hot_count; |
846ae671 CY |
185 | |
186 | down_read(&sbi->sb_lock); | |
187 | ||
b6a06cbb CY |
188 | cold_count = le32_to_cpu(sbi->raw_super->extension_count); |
189 | hot_count = sbi->raw_super->hot_ext_count; | |
57397d86 | 190 | |
b6a06cbb | 191 | for (i = 0; i < cold_count + hot_count; i++) { |
ed15ba14 CY |
192 | if (is_extension_exist(name, extlist[i])) |
193 | break; | |
57397d86 | 194 | } |
846ae671 CY |
195 | |
196 | up_read(&sbi->sb_lock); | |
ed15ba14 CY |
197 | |
198 | if (i == cold_count + hot_count) | |
199 | return; | |
200 | ||
201 | if (i < cold_count) | |
202 | file_set_cold(inode); | |
203 | else | |
204 | file_set_hot(inode); | |
846ae671 CY |
205 | } |
206 | ||
4d57b86d | 207 | int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name, |
b6a06cbb | 208 | bool hot, bool set) |
846ae671 CY |
209 | { |
210 | __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; | |
b6a06cbb CY |
211 | int cold_count = le32_to_cpu(sbi->raw_super->extension_count); |
212 | int hot_count = sbi->raw_super->hot_ext_count; | |
213 | int total_count = cold_count + hot_count; | |
214 | int start, count; | |
846ae671 CY |
215 | int i; |
216 | ||
b6a06cbb CY |
217 | if (set) { |
218 | if (total_count == F2FS_MAX_EXTENSION) | |
219 | return -EINVAL; | |
220 | } else { | |
221 | if (!hot && !cold_count) | |
222 | return -EINVAL; | |
223 | if (hot && !hot_count) | |
224 | return -EINVAL; | |
225 | } | |
226 | ||
227 | if (hot) { | |
228 | start = cold_count; | |
229 | count = total_count; | |
230 | } else { | |
231 | start = 0; | |
232 | count = cold_count; | |
233 | } | |
234 | ||
235 | for (i = start; i < count; i++) { | |
846ae671 CY |
236 | if (strcmp(name, extlist[i])) |
237 | continue; | |
238 | ||
239 | if (set) | |
240 | return -EINVAL; | |
241 | ||
242 | memcpy(extlist[i], extlist[i + 1], | |
b6a06cbb CY |
243 | F2FS_EXTENSION_LEN * (total_count - i - 1)); |
244 | memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN); | |
245 | if (hot) | |
246 | sbi->raw_super->hot_ext_count = hot_count - 1; | |
247 | else | |
248 | sbi->raw_super->extension_count = | |
249 | cpu_to_le32(cold_count - 1); | |
846ae671 CY |
250 | return 0; |
251 | } | |
252 | ||
253 | if (!set) | |
254 | return -EINVAL; | |
255 | ||
b6a06cbb | 256 | if (hot) { |
b1385478 | 257 | memcpy(extlist[count], name, strlen(name)); |
b6a06cbb CY |
258 | sbi->raw_super->hot_ext_count = hot_count + 1; |
259 | } else { | |
260 | char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN]; | |
261 | ||
262 | memcpy(buf, &extlist[cold_count], | |
263 | F2FS_EXTENSION_LEN * hot_count); | |
264 | memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN); | |
b1385478 | 265 | memcpy(extlist[cold_count], name, strlen(name)); |
b6a06cbb CY |
266 | memcpy(&extlist[cold_count + 1], buf, |
267 | F2FS_EXTENSION_LEN * hot_count); | |
268 | sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1); | |
269 | } | |
846ae671 | 270 | return 0; |
57397d86 JK |
271 | } |
272 | ||
4c8ff709 CY |
273 | static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode, |
274 | const unsigned char *name) | |
275 | { | |
276 | __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; | |
277 | unsigned char (*ext)[F2FS_EXTENSION_LEN]; | |
278 | unsigned int ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; | |
279 | int i, cold_count, hot_count; | |
280 | ||
281 | if (!f2fs_sb_has_compression(sbi) || | |
282 | is_inode_flag_set(inode, FI_COMPRESSED_FILE) || | |
283 | F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL || | |
284 | !f2fs_may_compress(inode)) | |
285 | return; | |
286 | ||
287 | down_read(&sbi->sb_lock); | |
288 | ||
289 | cold_count = le32_to_cpu(sbi->raw_super->extension_count); | |
290 | hot_count = sbi->raw_super->hot_ext_count; | |
291 | ||
292 | for (i = cold_count; i < cold_count + hot_count; i++) { | |
293 | if (is_extension_exist(name, extlist[i])) { | |
294 | up_read(&sbi->sb_lock); | |
295 | return; | |
296 | } | |
297 | } | |
298 | ||
299 | up_read(&sbi->sb_lock); | |
300 | ||
301 | ext = F2FS_OPTION(sbi).extensions; | |
302 | ||
303 | for (i = 0; i < ext_cnt; i++) { | |
304 | if (!is_extension_exist(name, ext[i])) | |
305 | continue; | |
306 | ||
307 | set_compress_context(inode); | |
308 | return; | |
309 | } | |
310 | } | |
311 | ||
57397d86 JK |
312 | static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode, |
313 | bool excl) | |
314 | { | |
4081363f | 315 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 JK |
316 | struct inode *inode; |
317 | nid_t ino = 0; | |
e479556b | 318 | int err; |
57397d86 | 319 | |
1f227a3e JK |
320 | if (unlikely(f2fs_cp_error(sbi))) |
321 | return -EIO; | |
00e09c0b CY |
322 | if (!f2fs_is_checkpoint_ready(sbi)) |
323 | return -ENOSPC; | |
1f227a3e | 324 | |
0abd675e CY |
325 | err = dquot_initialize(dir); |
326 | if (err) | |
327 | return err; | |
328 | ||
57397d86 JK |
329 | inode = f2fs_new_inode(dir, mode); |
330 | if (IS_ERR(inode)) | |
331 | return PTR_ERR(inode); | |
332 | ||
333 | if (!test_opt(sbi, DISABLE_EXT_IDENTIFY)) | |
b6a06cbb | 334 | set_file_temperature(sbi, inode, dentry->d_name.name); |
57397d86 | 335 | |
4c8ff709 CY |
336 | set_compress_inode(sbi, inode, dentry->d_name.name); |
337 | ||
57397d86 JK |
338 | inode->i_op = &f2fs_file_inode_operations; |
339 | inode->i_fop = &f2fs_file_operations; | |
340 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
341 | ino = inode->i_ino; | |
342 | ||
e479556b | 343 | f2fs_lock_op(sbi); |
57397d86 JK |
344 | err = f2fs_add_link(dentry, inode); |
345 | if (err) | |
346 | goto out; | |
44c16156 | 347 | f2fs_unlock_op(sbi); |
57397d86 | 348 | |
4d57b86d | 349 | f2fs_alloc_nid_done(sbi, ino); |
57397d86 | 350 | |
1e2e547a | 351 | d_instantiate_new(dentry, inode); |
b7e1d800 JK |
352 | |
353 | if (IS_DIRSYNC(dir)) | |
354 | f2fs_sync_fs(sbi->sb, 1); | |
9bb02c36 JK |
355 | |
356 | f2fs_balance_fs(sbi, true); | |
57397d86 JK |
357 | return 0; |
358 | out: | |
4d57b86d | 359 | f2fs_handle_failed_inode(inode); |
57397d86 JK |
360 | return err; |
361 | } | |
362 | ||
363 | static int f2fs_link(struct dentry *old_dentry, struct inode *dir, | |
364 | struct dentry *dentry) | |
365 | { | |
2b0143b5 | 366 | struct inode *inode = d_inode(old_dentry); |
4081363f | 367 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
e479556b | 368 | int err; |
57397d86 | 369 | |
1f227a3e JK |
370 | if (unlikely(f2fs_cp_error(sbi))) |
371 | return -EIO; | |
00e09c0b CY |
372 | if (!f2fs_is_checkpoint_ready(sbi)) |
373 | return -ENOSPC; | |
1f227a3e | 374 | |
b05157e7 EB |
375 | err = fscrypt_prepare_link(old_dentry, dir, dentry); |
376 | if (err) | |
377 | return err; | |
fcc85a4d | 378 | |
5c57132e CY |
379 | if (is_inode_flag_set(dir, FI_PROJ_INHERIT) && |
380 | (!projid_eq(F2FS_I(dir)->i_projid, | |
381 | F2FS_I(old_dentry->d_inode)->i_projid))) | |
382 | return -EXDEV; | |
383 | ||
0abd675e CY |
384 | err = dquot_initialize(dir); |
385 | if (err) | |
386 | return err; | |
387 | ||
2c4db1a6 | 388 | f2fs_balance_fs(sbi, true); |
1efef832 | 389 | |
078cd827 | 390 | inode->i_ctime = current_time(inode); |
6f6fd833 | 391 | ihold(inode); |
57397d86 | 392 | |
91942321 | 393 | set_inode_flag(inode, FI_INC_LINK); |
e479556b | 394 | f2fs_lock_op(sbi); |
57397d86 JK |
395 | err = f2fs_add_link(dentry, inode); |
396 | if (err) | |
397 | goto out; | |
44c16156 | 398 | f2fs_unlock_op(sbi); |
57397d86 JK |
399 | |
400 | d_instantiate(dentry, inode); | |
b7e1d800 JK |
401 | |
402 | if (IS_DIRSYNC(dir)) | |
403 | f2fs_sync_fs(sbi->sb, 1); | |
57397d86 JK |
404 | return 0; |
405 | out: | |
91942321 | 406 | clear_inode_flag(inode, FI_INC_LINK); |
57397d86 | 407 | iput(inode); |
44c16156 | 408 | f2fs_unlock_op(sbi); |
57397d86 JK |
409 | return err; |
410 | } | |
411 | ||
412 | struct dentry *f2fs_get_parent(struct dentry *child) | |
413 | { | |
414 | struct qstr dotdot = QSTR_INIT("..", 2); | |
91246c21 CY |
415 | struct page *page; |
416 | unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot, &page); | |
417 | if (!ino) { | |
418 | if (IS_ERR(page)) | |
419 | return ERR_CAST(page); | |
57397d86 | 420 | return ERR_PTR(-ENOENT); |
91246c21 | 421 | } |
fc64005c | 422 | return d_obtain_alias(f2fs_iget(child->d_sb, ino)); |
57397d86 JK |
423 | } |
424 | ||
510022a8 JK |
425 | static int __recover_dot_dentries(struct inode *dir, nid_t pino) |
426 | { | |
427 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
428 | struct qstr dot = QSTR_INIT(".", 1); | |
429 | struct qstr dotdot = QSTR_INIT("..", 2); | |
430 | struct f2fs_dir_entry *de; | |
431 | struct page *page; | |
432 | int err = 0; | |
433 | ||
4e0d836d | 434 | if (f2fs_readonly(sbi->sb)) { |
dcbb4c10 JP |
435 | f2fs_info(sbi, "skip recovering inline_dots inode (ino:%lu, pino:%u) in readonly mountpoint", |
436 | dir->i_ino, pino); | |
4e0d836d CY |
437 | return 0; |
438 | } | |
439 | ||
a6d3a479 CY |
440 | err = dquot_initialize(dir); |
441 | if (err) | |
442 | return err; | |
443 | ||
2c4db1a6 | 444 | f2fs_balance_fs(sbi, true); |
d5384174 | 445 | |
510022a8 JK |
446 | f2fs_lock_op(sbi); |
447 | ||
448 | de = f2fs_find_entry(dir, &dot, &page); | |
449 | if (de) { | |
510022a8 | 450 | f2fs_put_page(page, 0); |
42d96401 JK |
451 | } else if (IS_ERR(page)) { |
452 | err = PTR_ERR(page); | |
453 | goto out; | |
510022a8 | 454 | } else { |
4d57b86d | 455 | err = f2fs_do_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR); |
510022a8 JK |
456 | if (err) |
457 | goto out; | |
458 | } | |
459 | ||
460 | de = f2fs_find_entry(dir, &dotdot, &page); | |
bdbc90fa | 461 | if (de) |
510022a8 | 462 | f2fs_put_page(page, 0); |
bdbc90fa | 463 | else if (IS_ERR(page)) |
42d96401 | 464 | err = PTR_ERR(page); |
bdbc90fa | 465 | else |
4d57b86d | 466 | err = f2fs_do_add_link(dir, &dotdot, NULL, pino, S_IFDIR); |
510022a8 | 467 | out: |
205b9822 | 468 | if (!err) |
91942321 | 469 | clear_inode_flag(dir, FI_INLINE_DOTS); |
510022a8 JK |
470 | |
471 | f2fs_unlock_op(sbi); | |
472 | return err; | |
473 | } | |
474 | ||
57397d86 JK |
475 | static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry, |
476 | unsigned int flags) | |
477 | { | |
478 | struct inode *inode = NULL; | |
479 | struct f2fs_dir_entry *de; | |
480 | struct page *page; | |
0c5e36db CY |
481 | struct dentry *new; |
482 | nid_t ino = -1; | |
fcc85a4d | 483 | int err = 0; |
8c2b1435 | 484 | unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir)); |
b01531db | 485 | struct fscrypt_name fname; |
57397d86 | 486 | |
0c5e36db CY |
487 | trace_f2fs_lookup_start(dir, dentry, flags); |
488 | ||
0c5e36db CY |
489 | if (dentry->d_name.len > F2FS_NAME_LEN) { |
490 | err = -ENAMETOOLONG; | |
491 | goto out; | |
492 | } | |
57397d86 | 493 | |
b01531db EB |
494 | err = fscrypt_prepare_lookup(dir, dentry, &fname); |
495 | if (err == -ENOENT) | |
496 | goto out_splice; | |
497 | if (err) | |
498 | goto out; | |
499 | de = __f2fs_find_entry(dir, &fname, &page); | |
500 | fscrypt_free_filename(&fname); | |
501 | ||
eb4246dc | 502 | if (!de) { |
0c5e36db CY |
503 | if (IS_ERR(page)) { |
504 | err = PTR_ERR(page); | |
505 | goto out; | |
506 | } | |
507 | goto out_splice; | |
eb4246dc | 508 | } |
57397d86 | 509 | |
06957e8f | 510 | ino = le32_to_cpu(de->ino); |
06957e8f | 511 | f2fs_put_page(page, 0); |
510022a8 | 512 | |
06957e8f | 513 | inode = f2fs_iget(dir->i_sb, ino); |
0c5e36db CY |
514 | if (IS_ERR(inode)) { |
515 | err = PTR_ERR(inode); | |
516 | goto out; | |
517 | } | |
510022a8 | 518 | |
8c2b1435 LX |
519 | if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) { |
520 | err = __recover_dot_dentries(dir, root_ino); | |
521 | if (err) | |
0c5e36db | 522 | goto out_iput; |
8c2b1435 LX |
523 | } |
524 | ||
fcc85a4d | 525 | if (f2fs_has_inline_dots(inode)) { |
06957e8f | 526 | err = __recover_dot_dentries(inode, dir->i_ino); |
fcc85a4d | 527 | if (err) |
0c5e36db | 528 | goto out_iput; |
57397d86 | 529 | } |
62230e0d | 530 | if (IS_ENCRYPTED(dir) && |
07fe8d44 DC |
531 | (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) && |
532 | !fscrypt_has_permitted_context(dir, inode)) { | |
dcbb4c10 JP |
533 | f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu", |
534 | dir->i_ino, inode->i_ino); | |
faac7fd9 | 535 | err = -EPERM; |
0c5e36db | 536 | goto out_iput; |
8074bb51 | 537 | } |
0c5e36db | 538 | out_splice: |
2c2eb7a3 DR |
539 | #ifdef CONFIG_UNICODE |
540 | if (!inode && IS_CASEFOLDED(dir)) { | |
541 | /* Eventually we want to call d_add_ci(dentry, NULL) | |
542 | * for negative dentries in the encoding case as | |
543 | * well. For now, prevent the negative dentry | |
544 | * from being cached. | |
545 | */ | |
546 | trace_f2fs_lookup_end(dir, dentry, ino, err); | |
547 | return NULL; | |
548 | } | |
549 | #endif | |
0c5e36db | 550 | new = d_splice_alias(inode, dentry); |
b01531db | 551 | err = PTR_ERR_OR_ZERO(new); |
0c5e36db CY |
552 | trace_f2fs_lookup_end(dir, dentry, ino, err); |
553 | return new; | |
554 | out_iput: | |
d726732c | 555 | iput(inode); |
0c5e36db CY |
556 | out: |
557 | trace_f2fs_lookup_end(dir, dentry, ino, err); | |
fcc85a4d | 558 | return ERR_PTR(err); |
57397d86 JK |
559 | } |
560 | ||
561 | static int f2fs_unlink(struct inode *dir, struct dentry *dentry) | |
562 | { | |
4081363f | 563 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
2b0143b5 | 564 | struct inode *inode = d_inode(dentry); |
57397d86 JK |
565 | struct f2fs_dir_entry *de; |
566 | struct page *page; | |
567 | int err = -ENOENT; | |
568 | ||
a2a4a7e4 | 569 | trace_f2fs_unlink_enter(dir, dentry); |
1efef832 | 570 | |
1f227a3e JK |
571 | if (unlikely(f2fs_cp_error(sbi))) |
572 | return -EIO; | |
573 | ||
0abd675e | 574 | err = dquot_initialize(dir); |
d8d1389e JK |
575 | if (err) |
576 | return err; | |
577 | err = dquot_initialize(inode); | |
0abd675e CY |
578 | if (err) |
579 | return err; | |
580 | ||
57397d86 | 581 | de = f2fs_find_entry(dir, &dentry->d_name, &page); |
91246c21 CY |
582 | if (!de) { |
583 | if (IS_ERR(page)) | |
584 | err = PTR_ERR(page); | |
57397d86 | 585 | goto fail; |
91246c21 | 586 | } |
57397d86 | 587 | |
2c4db1a6 | 588 | f2fs_balance_fs(sbi, true); |
00623e6b | 589 | |
ccaaca25 | 590 | f2fs_lock_op(sbi); |
4d57b86d | 591 | err = f2fs_acquire_orphan_inode(sbi); |
57397d86 | 592 | if (err) { |
ccaaca25 | 593 | f2fs_unlock_op(sbi); |
57397d86 JK |
594 | f2fs_put_page(page, 0); |
595 | goto fail; | |
596 | } | |
dbeacf02 | 597 | f2fs_delete_entry(de, page, dir, inode); |
2c2eb7a3 DR |
598 | #ifdef CONFIG_UNICODE |
599 | /* VFS negative dentries are incompatible with Encoding and | |
600 | * Case-insensitiveness. Eventually we'll want avoid | |
601 | * invalidating the dentries here, alongside with returning the | |
602 | * negative dentries at f2fs_lookup(), when it is better | |
603 | * supported by the VFS for the CI case. | |
604 | */ | |
605 | if (IS_CASEFOLDED(dir)) | |
606 | d_invalidate(dentry); | |
607 | #endif | |
e479556b | 608 | f2fs_unlock_op(sbi); |
57397d86 | 609 | |
b7e1d800 JK |
610 | if (IS_DIRSYNC(dir)) |
611 | f2fs_sync_fs(sbi->sb, 1); | |
57397d86 | 612 | fail: |
a2a4a7e4 | 613 | trace_f2fs_unlink_exit(inode, err); |
57397d86 JK |
614 | return err; |
615 | } | |
616 | ||
6b255391 | 617 | static const char *f2fs_get_link(struct dentry *dentry, |
fceef393 AV |
618 | struct inode *inode, |
619 | struct delayed_call *done) | |
feb7cbb0 | 620 | { |
fceef393 | 621 | const char *link = page_get_link(dentry, inode, done); |
680baacb AV |
622 | if (!IS_ERR(link) && !*link) { |
623 | /* this is broken symlink case */ | |
fceef393 AV |
624 | do_delayed_call(done); |
625 | clear_delayed_call(done); | |
680baacb | 626 | link = ERR_PTR(-ENOENT); |
feb7cbb0 | 627 | } |
680baacb | 628 | return link; |
feb7cbb0 JK |
629 | } |
630 | ||
57397d86 JK |
631 | static int f2fs_symlink(struct inode *dir, struct dentry *dentry, |
632 | const char *symname) | |
633 | { | |
4081363f | 634 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 | 635 | struct inode *inode; |
cbaf042a | 636 | size_t len = strlen(symname); |
393c038f | 637 | struct fscrypt_str disk_link; |
e479556b | 638 | int err; |
57397d86 | 639 | |
1f227a3e JK |
640 | if (unlikely(f2fs_cp_error(sbi))) |
641 | return -EIO; | |
00e09c0b CY |
642 | if (!f2fs_is_checkpoint_ready(sbi)) |
643 | return -ENOSPC; | |
1f227a3e | 644 | |
393c038f EB |
645 | err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize, |
646 | &disk_link); | |
647 | if (err) | |
648 | return err; | |
cbaf042a | 649 | |
0abd675e CY |
650 | err = dquot_initialize(dir); |
651 | if (err) | |
652 | return err; | |
653 | ||
57397d86 JK |
654 | inode = f2fs_new_inode(dir, S_IFLNK | S_IRWXUGO); |
655 | if (IS_ERR(inode)) | |
656 | return PTR_ERR(inode); | |
657 | ||
393c038f | 658 | if (IS_ENCRYPTED(inode)) |
cbaf042a JK |
659 | inode->i_op = &f2fs_encrypted_symlink_inode_operations; |
660 | else | |
661 | inode->i_op = &f2fs_symlink_inode_operations; | |
21fc61c7 | 662 | inode_nohighmem(inode); |
57397d86 JK |
663 | inode->i_mapping->a_ops = &f2fs_dblock_aops; |
664 | ||
e479556b | 665 | f2fs_lock_op(sbi); |
57397d86 JK |
666 | err = f2fs_add_link(dentry, inode); |
667 | if (err) | |
4d57b86d | 668 | goto out_f2fs_handle_failed_inode; |
44c16156 | 669 | f2fs_unlock_op(sbi); |
4d57b86d | 670 | f2fs_alloc_nid_done(sbi, inode->i_ino); |
57397d86 | 671 | |
393c038f EB |
672 | err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link); |
673 | if (err) | |
674 | goto err_out; | |
cbaf042a | 675 | |
922ec355 | 676 | err = page_symlink(inode, disk_link.name, disk_link.len); |
cbaf042a JK |
677 | |
678 | err_out: | |
1e2e547a | 679 | d_instantiate_new(dentry, inode); |
b7e1d800 | 680 | |
d0cae97c JK |
681 | /* |
682 | * Let's flush symlink data in order to avoid broken symlink as much as | |
683 | * possible. Nevertheless, fsyncing is the best way, but there is no | |
684 | * way to get a file descriptor in order to flush that. | |
685 | * | |
686 | * Note that, it needs to do dir->fsync to make this recoverable. | |
687 | * If the symlink path is stored into inline_data, there is no | |
688 | * performance regression. | |
689 | */ | |
a6be014e | 690 | if (!err) { |
922ec355 CY |
691 | filemap_write_and_wait_range(inode->i_mapping, 0, |
692 | disk_link.len - 1); | |
d0cae97c | 693 | |
a6be014e CY |
694 | if (IS_DIRSYNC(dir)) |
695 | f2fs_sync_fs(sbi->sb, 1); | |
696 | } else { | |
697 | f2fs_unlink(dir, dentry); | |
698 | } | |
cbaf042a | 699 | |
9bb02c36 | 700 | f2fs_balance_fs(sbi, true); |
393c038f EB |
701 | goto out_free_encrypted_link; |
702 | ||
4d57b86d CY |
703 | out_f2fs_handle_failed_inode: |
704 | f2fs_handle_failed_inode(inode); | |
393c038f EB |
705 | out_free_encrypted_link: |
706 | if (disk_link.name != (unsigned char *)symname) | |
5222595d | 707 | kvfree(disk_link.name); |
57397d86 JK |
708 | return err; |
709 | } | |
710 | ||
711 | static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) | |
712 | { | |
4081363f | 713 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 | 714 | struct inode *inode; |
e479556b | 715 | int err; |
57397d86 | 716 | |
1f227a3e JK |
717 | if (unlikely(f2fs_cp_error(sbi))) |
718 | return -EIO; | |
719 | ||
0abd675e CY |
720 | err = dquot_initialize(dir); |
721 | if (err) | |
722 | return err; | |
723 | ||
57397d86 | 724 | inode = f2fs_new_inode(dir, S_IFDIR | mode); |
57397d86 | 725 | if (IS_ERR(inode)) |
61412b64 | 726 | return PTR_ERR(inode); |
57397d86 JK |
727 | |
728 | inode->i_op = &f2fs_dir_inode_operations; | |
729 | inode->i_fop = &f2fs_dir_operations; | |
730 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
bdbc90fa | 731 | inode_nohighmem(inode); |
57397d86 | 732 | |
91942321 | 733 | set_inode_flag(inode, FI_INC_LINK); |
e479556b | 734 | f2fs_lock_op(sbi); |
57397d86 JK |
735 | err = f2fs_add_link(dentry, inode); |
736 | if (err) | |
737 | goto out_fail; | |
44c16156 | 738 | f2fs_unlock_op(sbi); |
57397d86 | 739 | |
4d57b86d | 740 | f2fs_alloc_nid_done(sbi, inode->i_ino); |
57397d86 | 741 | |
1e2e547a | 742 | d_instantiate_new(dentry, inode); |
57397d86 | 743 | |
b7e1d800 JK |
744 | if (IS_DIRSYNC(dir)) |
745 | f2fs_sync_fs(sbi->sb, 1); | |
9bb02c36 JK |
746 | |
747 | f2fs_balance_fs(sbi, true); | |
57397d86 JK |
748 | return 0; |
749 | ||
750 | out_fail: | |
91942321 | 751 | clear_inode_flag(inode, FI_INC_LINK); |
4d57b86d | 752 | f2fs_handle_failed_inode(inode); |
57397d86 JK |
753 | return err; |
754 | } | |
755 | ||
756 | static int f2fs_rmdir(struct inode *dir, struct dentry *dentry) | |
757 | { | |
2b0143b5 | 758 | struct inode *inode = d_inode(dentry); |
57397d86 JK |
759 | if (f2fs_empty_dir(inode)) |
760 | return f2fs_unlink(dir, dentry); | |
761 | return -ENOTEMPTY; | |
762 | } | |
763 | ||
764 | static int f2fs_mknod(struct inode *dir, struct dentry *dentry, | |
765 | umode_t mode, dev_t rdev) | |
766 | { | |
4081363f | 767 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 JK |
768 | struct inode *inode; |
769 | int err = 0; | |
770 | ||
1f227a3e JK |
771 | if (unlikely(f2fs_cp_error(sbi))) |
772 | return -EIO; | |
00e09c0b CY |
773 | if (!f2fs_is_checkpoint_ready(sbi)) |
774 | return -ENOSPC; | |
1f227a3e | 775 | |
0abd675e CY |
776 | err = dquot_initialize(dir); |
777 | if (err) | |
778 | return err; | |
779 | ||
57397d86 JK |
780 | inode = f2fs_new_inode(dir, mode); |
781 | if (IS_ERR(inode)) | |
782 | return PTR_ERR(inode); | |
783 | ||
784 | init_special_inode(inode, inode->i_mode, rdev); | |
785 | inode->i_op = &f2fs_special_inode_operations; | |
786 | ||
e479556b | 787 | f2fs_lock_op(sbi); |
57397d86 JK |
788 | err = f2fs_add_link(dentry, inode); |
789 | if (err) | |
790 | goto out; | |
44c16156 | 791 | f2fs_unlock_op(sbi); |
57397d86 | 792 | |
4d57b86d | 793 | f2fs_alloc_nid_done(sbi, inode->i_ino); |
b7e1d800 | 794 | |
1e2e547a | 795 | d_instantiate_new(dentry, inode); |
b7e1d800 JK |
796 | |
797 | if (IS_DIRSYNC(dir)) | |
798 | f2fs_sync_fs(sbi->sb, 1); | |
9bb02c36 JK |
799 | |
800 | f2fs_balance_fs(sbi, true); | |
57397d86 JK |
801 | return 0; |
802 | out: | |
4d57b86d | 803 | f2fs_handle_failed_inode(inode); |
57397d86 JK |
804 | return err; |
805 | } | |
806 | ||
7e01e7ad CY |
807 | static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry, |
808 | umode_t mode, struct inode **whiteout) | |
809 | { | |
810 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
811 | struct inode *inode; | |
812 | int err; | |
813 | ||
0abd675e CY |
814 | err = dquot_initialize(dir); |
815 | if (err) | |
816 | return err; | |
817 | ||
7e01e7ad CY |
818 | inode = f2fs_new_inode(dir, mode); |
819 | if (IS_ERR(inode)) | |
820 | return PTR_ERR(inode); | |
821 | ||
822 | if (whiteout) { | |
823 | init_special_inode(inode, inode->i_mode, WHITEOUT_DEV); | |
824 | inode->i_op = &f2fs_special_inode_operations; | |
825 | } else { | |
826 | inode->i_op = &f2fs_file_inode_operations; | |
827 | inode->i_fop = &f2fs_file_operations; | |
828 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
829 | } | |
830 | ||
831 | f2fs_lock_op(sbi); | |
4d57b86d | 832 | err = f2fs_acquire_orphan_inode(sbi); |
7e01e7ad CY |
833 | if (err) |
834 | goto out; | |
835 | ||
836 | err = f2fs_do_tmpfile(inode, dir); | |
837 | if (err) | |
838 | goto release_out; | |
839 | ||
840 | /* | |
841 | * add this non-linked tmpfile to orphan list, in this way we could | |
842 | * remove all unused data of tmpfile after abnormal power-off. | |
843 | */ | |
4d57b86d CY |
844 | f2fs_add_orphan_inode(inode); |
845 | f2fs_alloc_nid_done(sbi, inode->i_ino); | |
7e01e7ad CY |
846 | |
847 | if (whiteout) { | |
a1961246 | 848 | f2fs_i_links_write(inode, false); |
5b1dbb08 | 849 | inode->i_state |= I_LINKABLE; |
7e01e7ad CY |
850 | *whiteout = inode; |
851 | } else { | |
852 | d_tmpfile(dentry, inode); | |
853 | } | |
a1961246 JK |
854 | /* link_count was changed by d_tmpfile as well. */ |
855 | f2fs_unlock_op(sbi); | |
7e01e7ad | 856 | unlock_new_inode(inode); |
9bb02c36 JK |
857 | |
858 | f2fs_balance_fs(sbi, true); | |
7e01e7ad CY |
859 | return 0; |
860 | ||
861 | release_out: | |
4d57b86d | 862 | f2fs_release_orphan_inode(sbi); |
7e01e7ad | 863 | out: |
4d57b86d | 864 | f2fs_handle_failed_inode(inode); |
7e01e7ad CY |
865 | return err; |
866 | } | |
867 | ||
868 | static int f2fs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) | |
869 | { | |
ff62af20 SY |
870 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
871 | ||
872 | if (unlikely(f2fs_cp_error(sbi))) | |
1f227a3e | 873 | return -EIO; |
00e09c0b CY |
874 | if (!f2fs_is_checkpoint_ready(sbi)) |
875 | return -ENOSPC; | |
1f227a3e | 876 | |
7e01e7ad CY |
877 | return __f2fs_tmpfile(dir, dentry, mode, NULL); |
878 | } | |
879 | ||
880 | static int f2fs_create_whiteout(struct inode *dir, struct inode **whiteout) | |
881 | { | |
1f227a3e JK |
882 | if (unlikely(f2fs_cp_error(F2FS_I_SB(dir)))) |
883 | return -EIO; | |
884 | ||
7e01e7ad CY |
885 | return __f2fs_tmpfile(dir, NULL, S_IFCHR | WHITEOUT_MODE, whiteout); |
886 | } | |
887 | ||
57397d86 | 888 | static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, |
7e01e7ad CY |
889 | struct inode *new_dir, struct dentry *new_dentry, |
890 | unsigned int flags) | |
57397d86 | 891 | { |
4081363f | 892 | struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir); |
2b0143b5 DH |
893 | struct inode *old_inode = d_inode(old_dentry); |
894 | struct inode *new_inode = d_inode(new_dentry); | |
7e01e7ad | 895 | struct inode *whiteout = NULL; |
762e4db5 | 896 | struct page *old_dir_page = NULL; |
7e01e7ad | 897 | struct page *old_page, *new_page = NULL; |
57397d86 JK |
898 | struct f2fs_dir_entry *old_dir_entry = NULL; |
899 | struct f2fs_dir_entry *old_entry; | |
900 | struct f2fs_dir_entry *new_entry; | |
d83d0f5b | 901 | int err; |
57397d86 | 902 | |
1f227a3e JK |
903 | if (unlikely(f2fs_cp_error(sbi))) |
904 | return -EIO; | |
00e09c0b CY |
905 | if (!f2fs_is_checkpoint_ready(sbi)) |
906 | return -ENOSPC; | |
1f227a3e | 907 | |
5c57132e CY |
908 | if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && |
909 | (!projid_eq(F2FS_I(new_dir)->i_projid, | |
910 | F2FS_I(old_dentry->d_inode)->i_projid))) | |
911 | return -EXDEV; | |
912 | ||
b06af2af JK |
913 | /* |
914 | * If new_inode is null, the below renaming flow will | |
915 | * add a link in old_dir which can conver inline_dir. | |
916 | * After then, if we failed to get the entry due to other | |
917 | * reasons like ENOMEM, we had to remove the new entry. | |
918 | * Instead of adding such the error handling routine, let's | |
919 | * simply convert first here. | |
920 | */ | |
921 | if (old_dir == new_dir && !new_inode) { | |
922 | err = f2fs_try_convert_inline_dir(old_dir, new_dentry); | |
923 | if (err) | |
924 | return err; | |
925 | } | |
926 | ||
5b1dbb08 JK |
927 | if (flags & RENAME_WHITEOUT) { |
928 | err = f2fs_create_whiteout(old_dir, &whiteout); | |
929 | if (err) | |
930 | return err; | |
931 | } | |
932 | ||
0abd675e CY |
933 | err = dquot_initialize(old_dir); |
934 | if (err) | |
935 | goto out; | |
936 | ||
937 | err = dquot_initialize(new_dir); | |
938 | if (err) | |
939 | goto out; | |
940 | ||
d8d1389e JK |
941 | if (new_inode) { |
942 | err = dquot_initialize(new_inode); | |
943 | if (err) | |
944 | goto out; | |
945 | } | |
946 | ||
d83d0f5b | 947 | err = -ENOENT; |
57397d86 | 948 | old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page); |
91246c21 CY |
949 | if (!old_entry) { |
950 | if (IS_ERR(old_page)) | |
951 | err = PTR_ERR(old_page); | |
57397d86 | 952 | goto out; |
91246c21 | 953 | } |
57397d86 JK |
954 | |
955 | if (S_ISDIR(old_inode->i_mode)) { | |
57397d86 | 956 | old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page); |
3e19886e | 957 | if (!old_dir_entry) { |
91246c21 CY |
958 | if (IS_ERR(old_dir_page)) |
959 | err = PTR_ERR(old_dir_page); | |
57397d86 | 960 | goto out_old; |
3e19886e | 961 | } |
57397d86 JK |
962 | } |
963 | ||
57397d86 | 964 | if (new_inode) { |
57397d86 JK |
965 | |
966 | err = -ENOTEMPTY; | |
967 | if (old_dir_entry && !f2fs_empty_dir(new_inode)) | |
5b1dbb08 | 968 | goto out_dir; |
57397d86 JK |
969 | |
970 | err = -ENOENT; | |
971 | new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, | |
972 | &new_page); | |
91246c21 CY |
973 | if (!new_entry) { |
974 | if (IS_ERR(new_page)) | |
975 | err = PTR_ERR(new_page); | |
5b1dbb08 | 976 | goto out_dir; |
91246c21 | 977 | } |
57397d86 | 978 | |
2c4db1a6 | 979 | f2fs_balance_fs(sbi, true); |
00623e6b | 980 | |
1256010a CY |
981 | f2fs_lock_op(sbi); |
982 | ||
4d57b86d | 983 | err = f2fs_acquire_orphan_inode(sbi); |
cbd56e7d JK |
984 | if (err) |
985 | goto put_out_dir; | |
986 | ||
57397d86 | 987 | f2fs_set_link(new_dir, new_entry, new_page, old_inode); |
762e4db5 | 988 | new_page = NULL; |
57397d86 | 989 | |
078cd827 | 990 | new_inode->i_ctime = current_time(new_inode); |
d928bfbf | 991 | down_write(&F2FS_I(new_inode)->i_sem); |
57397d86 | 992 | if (old_dir_entry) |
a1961246 JK |
993 | f2fs_i_links_write(new_inode, false); |
994 | f2fs_i_links_write(new_inode, false); | |
d928bfbf JK |
995 | up_write(&F2FS_I(new_inode)->i_sem); |
996 | ||
57397d86 | 997 | if (!new_inode->i_nlink) |
4d57b86d | 998 | f2fs_add_orphan_inode(new_inode); |
cbd56e7d | 999 | else |
4d57b86d | 1000 | f2fs_release_orphan_inode(sbi); |
57397d86 | 1001 | } else { |
2c4db1a6 | 1002 | f2fs_balance_fs(sbi, true); |
00623e6b | 1003 | |
1256010a CY |
1004 | f2fs_lock_op(sbi); |
1005 | ||
57397d86 | 1006 | err = f2fs_add_link(new_dentry, old_inode); |
1256010a CY |
1007 | if (err) { |
1008 | f2fs_unlock_op(sbi); | |
5b1dbb08 | 1009 | goto out_dir; |
1256010a | 1010 | } |
57397d86 | 1011 | |
ee6d182f | 1012 | if (old_dir_entry) |
a1961246 | 1013 | f2fs_i_links_write(new_dir, true); |
57397d86 JK |
1014 | } |
1015 | ||
b2c08299 | 1016 | down_write(&F2FS_I(old_inode)->i_sem); |
b855bf0e SY |
1017 | if (!old_dir_entry || whiteout) |
1018 | file_lost_pino(old_inode); | |
1019 | else | |
2a60637f CY |
1020 | /* adjust dir's i_pino to pass fsck check */ |
1021 | f2fs_i_pino_write(old_inode, new_dir->i_ino); | |
b2c08299 JK |
1022 | up_write(&F2FS_I(old_inode)->i_sem); |
1023 | ||
078cd827 | 1024 | old_inode->i_ctime = current_time(old_inode); |
7c45729a | 1025 | f2fs_mark_inode_dirty_sync(old_inode, false); |
57397d86 | 1026 | |
dbeacf02 | 1027 | f2fs_delete_entry(old_entry, old_page, old_dir, NULL); |
762e4db5 | 1028 | old_page = NULL; |
57397d86 | 1029 | |
7e01e7ad | 1030 | if (whiteout) { |
91942321 | 1031 | set_inode_flag(whiteout, FI_INC_LINK); |
7e01e7ad CY |
1032 | err = f2fs_add_link(old_dentry, whiteout); |
1033 | if (err) | |
1034 | goto put_out_dir; | |
1035 | whiteout->i_state &= ~I_LINKABLE; | |
1036 | iput(whiteout); | |
1037 | } | |
1038 | ||
57397d86 | 1039 | if (old_dir_entry) { |
bdbc90fa | 1040 | if (old_dir != new_dir && !whiteout) |
57397d86 JK |
1041 | f2fs_set_link(old_inode, old_dir_entry, |
1042 | old_dir_page, new_dir); | |
bdbc90fa | 1043 | else |
57397d86 | 1044 | f2fs_put_page(old_dir_page, 0); |
a1961246 | 1045 | f2fs_i_links_write(old_dir, false); |
57397d86 | 1046 | } |
ade990f9 | 1047 | if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) { |
4d57b86d | 1048 | f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO); |
ade990f9 | 1049 | if (S_ISDIR(old_inode->i_mode)) |
4d57b86d CY |
1050 | f2fs_add_ino_entry(sbi, old_inode->i_ino, |
1051 | TRANS_DIR_INO); | |
ade990f9 | 1052 | } |
57397d86 | 1053 | |
e479556b | 1054 | f2fs_unlock_op(sbi); |
b7e1d800 JK |
1055 | |
1056 | if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) | |
1057 | f2fs_sync_fs(sbi->sb, 1); | |
6390398e ST |
1058 | |
1059 | f2fs_update_time(sbi, REQ_TIME); | |
57397d86 JK |
1060 | return 0; |
1061 | ||
cbd56e7d | 1062 | put_out_dir: |
1256010a | 1063 | f2fs_unlock_op(sbi); |
762e4db5 | 1064 | f2fs_put_page(new_page, 0); |
57397d86 | 1065 | out_dir: |
bdbc90fa | 1066 | if (old_dir_entry) |
57397d86 | 1067 | f2fs_put_page(old_dir_page, 0); |
57397d86 | 1068 | out_old: |
57397d86 JK |
1069 | f2fs_put_page(old_page, 0); |
1070 | out: | |
5b1dbb08 JK |
1071 | if (whiteout) |
1072 | iput(whiteout); | |
57397d86 JK |
1073 | return err; |
1074 | } | |
1075 | ||
32f9bc25 CY |
1076 | static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry, |
1077 | struct inode *new_dir, struct dentry *new_dentry) | |
1078 | { | |
4081363f | 1079 | struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir); |
2b0143b5 DH |
1080 | struct inode *old_inode = d_inode(old_dentry); |
1081 | struct inode *new_inode = d_inode(new_dentry); | |
32f9bc25 CY |
1082 | struct page *old_dir_page, *new_dir_page; |
1083 | struct page *old_page, *new_page; | |
1084 | struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL; | |
1085 | struct f2fs_dir_entry *old_entry, *new_entry; | |
1086 | int old_nlink = 0, new_nlink = 0; | |
d83d0f5b | 1087 | int err; |
363fa4e0 | 1088 | |
1f227a3e JK |
1089 | if (unlikely(f2fs_cp_error(sbi))) |
1090 | return -EIO; | |
00e09c0b CY |
1091 | if (!f2fs_is_checkpoint_ready(sbi)) |
1092 | return -ENOSPC; | |
1f227a3e | 1093 | |
5c57132e CY |
1094 | if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && |
1095 | !projid_eq(F2FS_I(new_dir)->i_projid, | |
1096 | F2FS_I(old_dentry->d_inode)->i_projid)) || | |
1097 | (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && | |
1098 | !projid_eq(F2FS_I(old_dir)->i_projid, | |
1099 | F2FS_I(new_dentry->d_inode)->i_projid))) | |
1100 | return -EXDEV; | |
1101 | ||
0abd675e CY |
1102 | err = dquot_initialize(old_dir); |
1103 | if (err) | |
1104 | goto out; | |
1105 | ||
1106 | err = dquot_initialize(new_dir); | |
1107 | if (err) | |
1108 | goto out; | |
1109 | ||
d83d0f5b | 1110 | err = -ENOENT; |
32f9bc25 | 1111 | old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page); |
91246c21 CY |
1112 | if (!old_entry) { |
1113 | if (IS_ERR(old_page)) | |
1114 | err = PTR_ERR(old_page); | |
32f9bc25 | 1115 | goto out; |
91246c21 | 1116 | } |
32f9bc25 CY |
1117 | |
1118 | new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page); | |
91246c21 CY |
1119 | if (!new_entry) { |
1120 | if (IS_ERR(new_page)) | |
1121 | err = PTR_ERR(new_page); | |
32f9bc25 | 1122 | goto out_old; |
91246c21 | 1123 | } |
32f9bc25 CY |
1124 | |
1125 | /* prepare for updating ".." directory entry info later */ | |
1126 | if (old_dir != new_dir) { | |
1127 | if (S_ISDIR(old_inode->i_mode)) { | |
32f9bc25 CY |
1128 | old_dir_entry = f2fs_parent_dir(old_inode, |
1129 | &old_dir_page); | |
3e19886e | 1130 | if (!old_dir_entry) { |
91246c21 CY |
1131 | if (IS_ERR(old_dir_page)) |
1132 | err = PTR_ERR(old_dir_page); | |
32f9bc25 | 1133 | goto out_new; |
3e19886e | 1134 | } |
32f9bc25 CY |
1135 | } |
1136 | ||
1137 | if (S_ISDIR(new_inode->i_mode)) { | |
32f9bc25 CY |
1138 | new_dir_entry = f2fs_parent_dir(new_inode, |
1139 | &new_dir_page); | |
3e19886e | 1140 | if (!new_dir_entry) { |
91246c21 CY |
1141 | if (IS_ERR(new_dir_page)) |
1142 | err = PTR_ERR(new_dir_page); | |
32f9bc25 | 1143 | goto out_old_dir; |
3e19886e | 1144 | } |
32f9bc25 CY |
1145 | } |
1146 | } | |
1147 | ||
1148 | /* | |
1149 | * If cross rename between file and directory those are not | |
1150 | * in the same directory, we will inc nlink of file's parent | |
1151 | * later, so we should check upper boundary of its nlink. | |
1152 | */ | |
1153 | if ((!old_dir_entry || !new_dir_entry) && | |
1154 | old_dir_entry != new_dir_entry) { | |
1155 | old_nlink = old_dir_entry ? -1 : 1; | |
1156 | new_nlink = -old_nlink; | |
1157 | err = -EMLINK; | |
e2f0e962 KM |
1158 | if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) || |
1159 | (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX)) | |
32f9bc25 CY |
1160 | goto out_new_dir; |
1161 | } | |
1162 | ||
2c4db1a6 | 1163 | f2fs_balance_fs(sbi, true); |
00623e6b | 1164 | |
32f9bc25 CY |
1165 | f2fs_lock_op(sbi); |
1166 | ||
32f9bc25 CY |
1167 | /* update ".." directory entry info of old dentry */ |
1168 | if (old_dir_entry) | |
1169 | f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir); | |
1170 | ||
1171 | /* update ".." directory entry info of new dentry */ | |
1172 | if (new_dir_entry) | |
1173 | f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir); | |
1174 | ||
1175 | /* update directory entry info of old dir inode */ | |
1176 | f2fs_set_link(old_dir, old_entry, old_page, new_inode); | |
1177 | ||
1178 | down_write(&F2FS_I(old_inode)->i_sem); | |
2a60637f CY |
1179 | if (!old_dir_entry) |
1180 | file_lost_pino(old_inode); | |
1181 | else | |
1182 | /* adjust dir's i_pino to pass fsck check */ | |
1183 | f2fs_i_pino_write(old_inode, new_dir->i_ino); | |
32f9bc25 CY |
1184 | up_write(&F2FS_I(old_inode)->i_sem); |
1185 | ||
078cd827 | 1186 | old_dir->i_ctime = current_time(old_dir); |
32f9bc25 CY |
1187 | if (old_nlink) { |
1188 | down_write(&F2FS_I(old_dir)->i_sem); | |
a1961246 | 1189 | f2fs_i_links_write(old_dir, old_nlink > 0); |
32f9bc25 CY |
1190 | up_write(&F2FS_I(old_dir)->i_sem); |
1191 | } | |
7c45729a | 1192 | f2fs_mark_inode_dirty_sync(old_dir, false); |
32f9bc25 CY |
1193 | |
1194 | /* update directory entry info of new dir inode */ | |
1195 | f2fs_set_link(new_dir, new_entry, new_page, old_inode); | |
1196 | ||
1197 | down_write(&F2FS_I(new_inode)->i_sem); | |
2a60637f CY |
1198 | if (!new_dir_entry) |
1199 | file_lost_pino(new_inode); | |
1200 | else | |
1201 | /* adjust dir's i_pino to pass fsck check */ | |
1202 | f2fs_i_pino_write(new_inode, old_dir->i_ino); | |
32f9bc25 CY |
1203 | up_write(&F2FS_I(new_inode)->i_sem); |
1204 | ||
078cd827 | 1205 | new_dir->i_ctime = current_time(new_dir); |
32f9bc25 CY |
1206 | if (new_nlink) { |
1207 | down_write(&F2FS_I(new_dir)->i_sem); | |
a1961246 | 1208 | f2fs_i_links_write(new_dir, new_nlink > 0); |
32f9bc25 CY |
1209 | up_write(&F2FS_I(new_dir)->i_sem); |
1210 | } | |
7c45729a | 1211 | f2fs_mark_inode_dirty_sync(new_dir, false); |
32f9bc25 | 1212 | |
63189b78 | 1213 | if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) { |
4d57b86d CY |
1214 | f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO); |
1215 | f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO); | |
93cf93f1 | 1216 | } |
0a007b97 | 1217 | |
32f9bc25 | 1218 | f2fs_unlock_op(sbi); |
b7e1d800 JK |
1219 | |
1220 | if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) | |
1221 | f2fs_sync_fs(sbi->sb, 1); | |
6390398e ST |
1222 | |
1223 | f2fs_update_time(sbi, REQ_TIME); | |
32f9bc25 | 1224 | return 0; |
32f9bc25 CY |
1225 | out_new_dir: |
1226 | if (new_dir_entry) { | |
32f9bc25 CY |
1227 | f2fs_put_page(new_dir_page, 0); |
1228 | } | |
1229 | out_old_dir: | |
1230 | if (old_dir_entry) { | |
32f9bc25 CY |
1231 | f2fs_put_page(old_dir_page, 0); |
1232 | } | |
1233 | out_new: | |
32f9bc25 CY |
1234 | f2fs_put_page(new_page, 0); |
1235 | out_old: | |
32f9bc25 CY |
1236 | f2fs_put_page(old_page, 0); |
1237 | out: | |
1238 | return err; | |
1239 | } | |
1240 | ||
1241 | static int f2fs_rename2(struct inode *old_dir, struct dentry *old_dentry, | |
1242 | struct inode *new_dir, struct dentry *new_dentry, | |
1243 | unsigned int flags) | |
1244 | { | |
2e45b07f EB |
1245 | int err; |
1246 | ||
7e01e7ad | 1247 | if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT)) |
32f9bc25 CY |
1248 | return -EINVAL; |
1249 | ||
2e45b07f EB |
1250 | err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry, |
1251 | flags); | |
1252 | if (err) | |
1253 | return err; | |
1254 | ||
32f9bc25 CY |
1255 | if (flags & RENAME_EXCHANGE) { |
1256 | return f2fs_cross_rename(old_dir, old_dentry, | |
1257 | new_dir, new_dentry); | |
1258 | } | |
1259 | /* | |
1260 | * VFS has already handled the new dentry existence case, | |
1261 | * here, we just deal with "RENAME_NOREPLACE" as regular rename. | |
1262 | */ | |
7e01e7ad | 1263 | return f2fs_rename(old_dir, old_dentry, new_dir, new_dentry, flags); |
32f9bc25 CY |
1264 | } |
1265 | ||
6b255391 | 1266 | static const char *f2fs_encrypted_get_link(struct dentry *dentry, |
fceef393 AV |
1267 | struct inode *inode, |
1268 | struct delayed_call *done) | |
50732df0 | 1269 | { |
f2329cb6 EB |
1270 | struct page *page; |
1271 | const char *target; | |
cbaf042a | 1272 | |
6b255391 AV |
1273 | if (!dentry) |
1274 | return ERR_PTR(-ECHILD); | |
1275 | ||
f2329cb6 EB |
1276 | page = read_mapping_page(inode->i_mapping, 0, NULL); |
1277 | if (IS_ERR(page)) | |
1278 | return ERR_CAST(page); | |
cbaf042a | 1279 | |
f2329cb6 EB |
1280 | target = fscrypt_get_symlink(inode, page_address(page), |
1281 | inode->i_sb->s_blocksize, done); | |
1282 | put_page(page); | |
1283 | return target; | |
50732df0 CY |
1284 | } |
1285 | ||
cbaf042a | 1286 | const struct inode_operations f2fs_encrypted_symlink_inode_operations = { |
6b255391 | 1287 | .get_link = f2fs_encrypted_get_link, |
cbaf042a JK |
1288 | .getattr = f2fs_getattr, |
1289 | .setattr = f2fs_setattr, | |
3a9e6433 | 1290 | #ifdef CONFIG_F2FS_FS_XATTR |
cbaf042a | 1291 | .listxattr = f2fs_listxattr, |
3a9e6433 | 1292 | #endif |
cbaf042a | 1293 | }; |
cbaf042a | 1294 | |
57397d86 JK |
1295 | const struct inode_operations f2fs_dir_inode_operations = { |
1296 | .create = f2fs_create, | |
1297 | .lookup = f2fs_lookup, | |
1298 | .link = f2fs_link, | |
1299 | .unlink = f2fs_unlink, | |
1300 | .symlink = f2fs_symlink, | |
1301 | .mkdir = f2fs_mkdir, | |
1302 | .rmdir = f2fs_rmdir, | |
1303 | .mknod = f2fs_mknod, | |
2773bf00 | 1304 | .rename = f2fs_rename2, |
50732df0 | 1305 | .tmpfile = f2fs_tmpfile, |
2d4d9fb5 | 1306 | .getattr = f2fs_getattr, |
57397d86 JK |
1307 | .setattr = f2fs_setattr, |
1308 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 1309 | .set_acl = f2fs_set_acl, |
57397d86 | 1310 | #ifdef CONFIG_F2FS_FS_XATTR |
57397d86 | 1311 | .listxattr = f2fs_listxattr, |
57397d86 | 1312 | #endif |
7975f349 | 1313 | .fiemap = f2fs_fiemap, |
57397d86 JK |
1314 | }; |
1315 | ||
1316 | const struct inode_operations f2fs_symlink_inode_operations = { | |
6b255391 | 1317 | .get_link = f2fs_get_link, |
2d4d9fb5 | 1318 | .getattr = f2fs_getattr, |
57397d86 JK |
1319 | .setattr = f2fs_setattr, |
1320 | #ifdef CONFIG_F2FS_FS_XATTR | |
57397d86 | 1321 | .listxattr = f2fs_listxattr, |
57397d86 JK |
1322 | #endif |
1323 | }; | |
1324 | ||
1325 | const struct inode_operations f2fs_special_inode_operations = { | |
2d4d9fb5 | 1326 | .getattr = f2fs_getattr, |
57397d86 JK |
1327 | .setattr = f2fs_setattr, |
1328 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 1329 | .set_acl = f2fs_set_acl, |
57397d86 | 1330 | #ifdef CONFIG_F2FS_FS_XATTR |
57397d86 | 1331 | .listxattr = f2fs_listxattr, |
57397d86 JK |
1332 | #endif |
1333 | }; |