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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; | |
e075b690 | 31 | bool encrypt = false; |
6afc662e | 32 | int xattr_size = 0; |
e479556b | 33 | int err; |
57397d86 | 34 | |
a014e037 | 35 | inode = new_inode(dir->i_sb); |
57397d86 JK |
36 | if (!inode) |
37 | return ERR_PTR(-ENOMEM); | |
38 | ||
e479556b | 39 | f2fs_lock_op(sbi); |
4d57b86d | 40 | if (!f2fs_alloc_nid(sbi, &ino)) { |
e479556b | 41 | f2fs_unlock_op(sbi); |
57397d86 JK |
42 | err = -ENOSPC; |
43 | goto fail; | |
44 | } | |
e479556b | 45 | f2fs_unlock_op(sbi); |
57397d86 | 46 | |
0abd675e CY |
47 | nid_free = true; |
48 | ||
70ff5dfe | 49 | inode_init_owner(inode, dir, mode); |
57397d86 JK |
50 | |
51 | inode->i_ino = ino; | |
57397d86 | 52 | inode->i_blocks = 0; |
95582b00 | 53 | inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); |
24b81dfc | 54 | F2FS_I(inode)->i_crtime = inode->i_mtime; |
428e3bcf | 55 | inode->i_generation = prandom_u32(); |
57397d86 | 56 | |
1c41e680 CY |
57 | if (S_ISDIR(inode->i_mode)) |
58 | F2FS_I(inode)->i_current_depth = 1; | |
59 | ||
57397d86 JK |
60 | err = insert_inode_locked(inode); |
61 | if (err) { | |
62 | err = -EINVAL; | |
a21c20f0 | 63 | goto fail; |
57397d86 | 64 | } |
622f28ae | 65 | |
7beb01f7 | 66 | if (f2fs_sb_has_project_quota(sbi) && |
59c84408 | 67 | (F2FS_I(dir)->i_flags & F2FS_PROJINHERIT_FL)) |
5c57132e CY |
68 | F2FS_I(inode)->i_projid = F2FS_I(dir)->i_projid; |
69 | else | |
70 | F2FS_I(inode)->i_projid = make_kprojid(&init_user_ns, | |
71 | F2FS_DEF_PROJID); | |
72 | ||
e075b690 EB |
73 | err = fscrypt_prepare_new_inode(dir, inode, &encrypt); |
74 | if (err) | |
75 | goto fail_drop; | |
76 | ||
0abd675e CY |
77 | err = dquot_initialize(inode); |
78 | if (err) | |
79 | goto fail_drop; | |
80 | ||
9ac1e2d8 DJ |
81 | set_inode_flag(inode, FI_NEW_INODE); |
82 | ||
e075b690 | 83 | if (encrypt) |
fcc85a4d JK |
84 | f2fs_set_encrypted_inode(inode); |
85 | ||
7beb01f7 | 86 | if (f2fs_sb_has_extra_attr(sbi)) { |
7a2af766 CY |
87 | set_inode_flag(inode, FI_EXTRA_ATTR); |
88 | F2FS_I(inode)->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE; | |
89 | } | |
90 | ||
91942321 JK |
91 | if (test_opt(sbi, INLINE_XATTR)) |
92 | set_inode_flag(inode, FI_INLINE_XATTR); | |
6afc662e | 93 | |
fba48a8b | 94 | if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode)) |
91942321 | 95 | set_inode_flag(inode, FI_INLINE_DATA); |
01b960e9 | 96 | if (f2fs_may_inline_dentry(inode)) |
91942321 | 97 | set_inode_flag(inode, FI_INLINE_DENTRY); |
622f28ae | 98 | |
7beb01f7 | 99 | if (f2fs_sb_has_flexible_inline_xattr(sbi)) { |
6afc662e CY |
100 | f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode)); |
101 | if (f2fs_has_inline_xattr(inode)) | |
63189b78 | 102 | xattr_size = F2FS_OPTION(sbi).inline_xattr_size; |
6afc662e CY |
103 | /* Otherwise, will be 0 */ |
104 | } else if (f2fs_has_inline_xattr(inode) || | |
105 | f2fs_has_inline_dentry(inode)) { | |
106 | xattr_size = DEFAULT_INLINE_XATTR_ADDRS; | |
107 | } | |
108 | F2FS_I(inode)->i_inline_xattr_size = xattr_size; | |
109 | ||
3e72f721 JK |
110 | f2fs_init_extent_tree(inode, NULL); |
111 | ||
d5e8f6c9 | 112 | stat_inc_inline_xattr(inode); |
2fb2c954 JK |
113 | stat_inc_inline_inode(inode); |
114 | stat_inc_inline_dir(inode); | |
115 | ||
5c57132e CY |
116 | F2FS_I(inode)->i_flags = |
117 | f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED); | |
118 | ||
11f5020d | 119 | if (S_ISDIR(inode->i_mode)) |
59c84408 | 120 | F2FS_I(inode)->i_flags |= F2FS_INDEX_FL; |
11f5020d | 121 | |
59c84408 | 122 | if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL) |
5c57132e CY |
123 | set_inode_flag(inode, FI_PROJ_INHERIT); |
124 | ||
4c8ff709 CY |
125 | if (f2fs_sb_has_compression(sbi)) { |
126 | /* Inherit the compression flag in directory */ | |
127 | if ((F2FS_I(dir)->i_flags & F2FS_COMPR_FL) && | |
128 | f2fs_may_compress(inode)) | |
129 | set_compress_context(inode); | |
130 | } | |
131 | ||
9149a5eb CY |
132 | f2fs_set_inode_flags(inode); |
133 | ||
d70b4f53 | 134 | trace_f2fs_new_inode(inode, 0); |
57397d86 JK |
135 | return inode; |
136 | ||
57397d86 | 137 | fail: |
d70b4f53 | 138 | trace_f2fs_new_inode(inode, err); |
531ad7d5 | 139 | make_bad_inode(inode); |
57397d86 | 140 | if (nid_free) |
91942321 | 141 | set_inode_flag(inode, FI_FREE_NID); |
c9b63bd0 | 142 | iput(inode); |
57397d86 | 143 | return ERR_PTR(err); |
0abd675e CY |
144 | fail_drop: |
145 | trace_f2fs_new_inode(inode, err); | |
146 | dquot_drop(inode); | |
147 | inode->i_flags |= S_NOQUOTA; | |
148 | if (nid_free) | |
149 | set_inode_flag(inode, FI_FREE_NID); | |
150 | clear_nlink(inode); | |
151 | unlock_new_inode(inode); | |
152 | iput(inode); | |
153 | return ERR_PTR(err); | |
57397d86 JK |
154 | } |
155 | ||
5c533b19 | 156 | static inline int is_extension_exist(const unsigned char *s, const char *sub) |
57397d86 | 157 | { |
9836b8b9 LR |
158 | size_t slen = strlen(s); |
159 | size_t sublen = strlen(sub); | |
7732c26a | 160 | int i; |
57397d86 | 161 | |
4c8ff709 CY |
162 | if (sublen == 1 && *sub == '*') |
163 | return 1; | |
164 | ||
741a7bea CY |
165 | /* |
166 | * filename format of multimedia file should be defined as: | |
7732c26a | 167 | * "filename + '.' + extension + (optional: '.' + temp extension)". |
741a7bea CY |
168 | */ |
169 | if (slen < sublen + 2) | |
170 | return 0; | |
171 | ||
7732c26a CY |
172 | for (i = 1; i < slen - sublen; i++) { |
173 | if (s[i] != '.') | |
174 | continue; | |
175 | if (!strncasecmp(s + i + 1, sub, sublen)) | |
176 | return 1; | |
177 | } | |
57397d86 | 178 | |
7732c26a | 179 | return 0; |
57397d86 JK |
180 | } |
181 | ||
0a8165d7 | 182 | /* |
7a88ddb5 | 183 | * Set file's temperature for hot/cold data separation |
57397d86 | 184 | */ |
b6a06cbb | 185 | static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode, |
57397d86 JK |
186 | const unsigned char *name) |
187 | { | |
846ae671 | 188 | __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; |
b6a06cbb | 189 | int i, cold_count, hot_count; |
846ae671 CY |
190 | |
191 | down_read(&sbi->sb_lock); | |
192 | ||
b6a06cbb CY |
193 | cold_count = le32_to_cpu(sbi->raw_super->extension_count); |
194 | hot_count = sbi->raw_super->hot_ext_count; | |
57397d86 | 195 | |
b6a06cbb | 196 | for (i = 0; i < cold_count + hot_count; i++) { |
ed15ba14 CY |
197 | if (is_extension_exist(name, extlist[i])) |
198 | break; | |
57397d86 | 199 | } |
846ae671 CY |
200 | |
201 | up_read(&sbi->sb_lock); | |
ed15ba14 CY |
202 | |
203 | if (i == cold_count + hot_count) | |
204 | return; | |
205 | ||
206 | if (i < cold_count) | |
207 | file_set_cold(inode); | |
208 | else | |
209 | file_set_hot(inode); | |
846ae671 CY |
210 | } |
211 | ||
4d57b86d | 212 | int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name, |
b6a06cbb | 213 | bool hot, bool set) |
846ae671 CY |
214 | { |
215 | __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; | |
b6a06cbb CY |
216 | int cold_count = le32_to_cpu(sbi->raw_super->extension_count); |
217 | int hot_count = sbi->raw_super->hot_ext_count; | |
218 | int total_count = cold_count + hot_count; | |
219 | int start, count; | |
846ae671 CY |
220 | int i; |
221 | ||
b6a06cbb CY |
222 | if (set) { |
223 | if (total_count == F2FS_MAX_EXTENSION) | |
224 | return -EINVAL; | |
225 | } else { | |
226 | if (!hot && !cold_count) | |
227 | return -EINVAL; | |
228 | if (hot && !hot_count) | |
229 | return -EINVAL; | |
230 | } | |
231 | ||
232 | if (hot) { | |
233 | start = cold_count; | |
234 | count = total_count; | |
235 | } else { | |
236 | start = 0; | |
237 | count = cold_count; | |
238 | } | |
239 | ||
240 | for (i = start; i < count; i++) { | |
846ae671 CY |
241 | if (strcmp(name, extlist[i])) |
242 | continue; | |
243 | ||
244 | if (set) | |
245 | return -EINVAL; | |
246 | ||
247 | memcpy(extlist[i], extlist[i + 1], | |
b6a06cbb CY |
248 | F2FS_EXTENSION_LEN * (total_count - i - 1)); |
249 | memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN); | |
250 | if (hot) | |
251 | sbi->raw_super->hot_ext_count = hot_count - 1; | |
252 | else | |
253 | sbi->raw_super->extension_count = | |
254 | cpu_to_le32(cold_count - 1); | |
846ae671 CY |
255 | return 0; |
256 | } | |
257 | ||
258 | if (!set) | |
259 | return -EINVAL; | |
260 | ||
b6a06cbb | 261 | if (hot) { |
b1385478 | 262 | memcpy(extlist[count], name, strlen(name)); |
b6a06cbb CY |
263 | sbi->raw_super->hot_ext_count = hot_count + 1; |
264 | } else { | |
265 | char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN]; | |
266 | ||
267 | memcpy(buf, &extlist[cold_count], | |
268 | F2FS_EXTENSION_LEN * hot_count); | |
269 | memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN); | |
b1385478 | 270 | memcpy(extlist[cold_count], name, strlen(name)); |
b6a06cbb CY |
271 | memcpy(&extlist[cold_count + 1], buf, |
272 | F2FS_EXTENSION_LEN * hot_count); | |
273 | sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1); | |
274 | } | |
846ae671 | 275 | return 0; |
57397d86 JK |
276 | } |
277 | ||
4c8ff709 CY |
278 | static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode, |
279 | const unsigned char *name) | |
280 | { | |
281 | __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; | |
282 | unsigned char (*ext)[F2FS_EXTENSION_LEN]; | |
283 | unsigned int ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; | |
284 | int i, cold_count, hot_count; | |
285 | ||
286 | if (!f2fs_sb_has_compression(sbi) || | |
287 | is_inode_flag_set(inode, FI_COMPRESSED_FILE) || | |
288 | F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL || | |
289 | !f2fs_may_compress(inode)) | |
290 | return; | |
291 | ||
292 | down_read(&sbi->sb_lock); | |
293 | ||
294 | cold_count = le32_to_cpu(sbi->raw_super->extension_count); | |
295 | hot_count = sbi->raw_super->hot_ext_count; | |
296 | ||
297 | for (i = cold_count; i < cold_count + hot_count; i++) { | |
298 | if (is_extension_exist(name, extlist[i])) { | |
299 | up_read(&sbi->sb_lock); | |
300 | return; | |
301 | } | |
302 | } | |
303 | ||
304 | up_read(&sbi->sb_lock); | |
305 | ||
306 | ext = F2FS_OPTION(sbi).extensions; | |
307 | ||
308 | for (i = 0; i < ext_cnt; i++) { | |
309 | if (!is_extension_exist(name, ext[i])) | |
310 | continue; | |
311 | ||
312 | set_compress_context(inode); | |
313 | return; | |
314 | } | |
315 | } | |
316 | ||
57397d86 JK |
317 | static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode, |
318 | bool excl) | |
319 | { | |
4081363f | 320 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 JK |
321 | struct inode *inode; |
322 | nid_t ino = 0; | |
e479556b | 323 | int err; |
57397d86 | 324 | |
1f227a3e JK |
325 | if (unlikely(f2fs_cp_error(sbi))) |
326 | return -EIO; | |
00e09c0b CY |
327 | if (!f2fs_is_checkpoint_ready(sbi)) |
328 | return -ENOSPC; | |
1f227a3e | 329 | |
0abd675e CY |
330 | err = dquot_initialize(dir); |
331 | if (err) | |
332 | return err; | |
333 | ||
57397d86 JK |
334 | inode = f2fs_new_inode(dir, mode); |
335 | if (IS_ERR(inode)) | |
336 | return PTR_ERR(inode); | |
337 | ||
338 | if (!test_opt(sbi, DISABLE_EXT_IDENTIFY)) | |
b6a06cbb | 339 | set_file_temperature(sbi, inode, dentry->d_name.name); |
57397d86 | 340 | |
4c8ff709 CY |
341 | set_compress_inode(sbi, inode, dentry->d_name.name); |
342 | ||
57397d86 JK |
343 | inode->i_op = &f2fs_file_inode_operations; |
344 | inode->i_fop = &f2fs_file_operations; | |
345 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
346 | ino = inode->i_ino; | |
347 | ||
e479556b | 348 | f2fs_lock_op(sbi); |
57397d86 JK |
349 | err = f2fs_add_link(dentry, inode); |
350 | if (err) | |
351 | goto out; | |
44c16156 | 352 | f2fs_unlock_op(sbi); |
57397d86 | 353 | |
4d57b86d | 354 | f2fs_alloc_nid_done(sbi, ino); |
57397d86 | 355 | |
1e2e547a | 356 | d_instantiate_new(dentry, inode); |
b7e1d800 JK |
357 | |
358 | if (IS_DIRSYNC(dir)) | |
359 | f2fs_sync_fs(sbi->sb, 1); | |
9bb02c36 JK |
360 | |
361 | f2fs_balance_fs(sbi, true); | |
57397d86 JK |
362 | return 0; |
363 | out: | |
4d57b86d | 364 | f2fs_handle_failed_inode(inode); |
57397d86 JK |
365 | return err; |
366 | } | |
367 | ||
368 | static int f2fs_link(struct dentry *old_dentry, struct inode *dir, | |
369 | struct dentry *dentry) | |
370 | { | |
2b0143b5 | 371 | struct inode *inode = d_inode(old_dentry); |
4081363f | 372 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
e479556b | 373 | int err; |
57397d86 | 374 | |
1f227a3e JK |
375 | if (unlikely(f2fs_cp_error(sbi))) |
376 | return -EIO; | |
00e09c0b CY |
377 | if (!f2fs_is_checkpoint_ready(sbi)) |
378 | return -ENOSPC; | |
1f227a3e | 379 | |
b05157e7 EB |
380 | err = fscrypt_prepare_link(old_dentry, dir, dentry); |
381 | if (err) | |
382 | return err; | |
fcc85a4d | 383 | |
5c57132e CY |
384 | if (is_inode_flag_set(dir, FI_PROJ_INHERIT) && |
385 | (!projid_eq(F2FS_I(dir)->i_projid, | |
386 | F2FS_I(old_dentry->d_inode)->i_projid))) | |
387 | return -EXDEV; | |
388 | ||
0abd675e CY |
389 | err = dquot_initialize(dir); |
390 | if (err) | |
391 | return err; | |
392 | ||
2c4db1a6 | 393 | f2fs_balance_fs(sbi, true); |
1efef832 | 394 | |
078cd827 | 395 | inode->i_ctime = current_time(inode); |
6f6fd833 | 396 | ihold(inode); |
57397d86 | 397 | |
91942321 | 398 | set_inode_flag(inode, FI_INC_LINK); |
e479556b | 399 | f2fs_lock_op(sbi); |
57397d86 JK |
400 | err = f2fs_add_link(dentry, inode); |
401 | if (err) | |
402 | goto out; | |
44c16156 | 403 | f2fs_unlock_op(sbi); |
57397d86 JK |
404 | |
405 | d_instantiate(dentry, inode); | |
b7e1d800 JK |
406 | |
407 | if (IS_DIRSYNC(dir)) | |
408 | f2fs_sync_fs(sbi->sb, 1); | |
57397d86 JK |
409 | return 0; |
410 | out: | |
91942321 | 411 | clear_inode_flag(inode, FI_INC_LINK); |
57397d86 | 412 | iput(inode); |
44c16156 | 413 | f2fs_unlock_op(sbi); |
57397d86 JK |
414 | return err; |
415 | } | |
416 | ||
417 | struct dentry *f2fs_get_parent(struct dentry *child) | |
418 | { | |
419 | struct qstr dotdot = QSTR_INIT("..", 2); | |
91246c21 CY |
420 | struct page *page; |
421 | unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot, &page); | |
422 | if (!ino) { | |
423 | if (IS_ERR(page)) | |
424 | return ERR_CAST(page); | |
57397d86 | 425 | return ERR_PTR(-ENOENT); |
91246c21 | 426 | } |
fc64005c | 427 | return d_obtain_alias(f2fs_iget(child->d_sb, ino)); |
57397d86 JK |
428 | } |
429 | ||
510022a8 JK |
430 | static int __recover_dot_dentries(struct inode *dir, nid_t pino) |
431 | { | |
432 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
433 | struct qstr dot = QSTR_INIT(".", 1); | |
434 | struct qstr dotdot = QSTR_INIT("..", 2); | |
435 | struct f2fs_dir_entry *de; | |
436 | struct page *page; | |
437 | int err = 0; | |
438 | ||
4e0d836d | 439 | if (f2fs_readonly(sbi->sb)) { |
dcbb4c10 JP |
440 | f2fs_info(sbi, "skip recovering inline_dots inode (ino:%lu, pino:%u) in readonly mountpoint", |
441 | dir->i_ino, pino); | |
4e0d836d CY |
442 | return 0; |
443 | } | |
444 | ||
a6d3a479 CY |
445 | err = dquot_initialize(dir); |
446 | if (err) | |
447 | return err; | |
448 | ||
2c4db1a6 | 449 | f2fs_balance_fs(sbi, true); |
d5384174 | 450 | |
510022a8 JK |
451 | f2fs_lock_op(sbi); |
452 | ||
453 | de = f2fs_find_entry(dir, &dot, &page); | |
454 | if (de) { | |
510022a8 | 455 | f2fs_put_page(page, 0); |
42d96401 JK |
456 | } else if (IS_ERR(page)) { |
457 | err = PTR_ERR(page); | |
458 | goto out; | |
510022a8 | 459 | } else { |
4d57b86d | 460 | err = f2fs_do_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR); |
510022a8 JK |
461 | if (err) |
462 | goto out; | |
463 | } | |
464 | ||
465 | de = f2fs_find_entry(dir, &dotdot, &page); | |
bdbc90fa | 466 | if (de) |
510022a8 | 467 | f2fs_put_page(page, 0); |
bdbc90fa | 468 | else if (IS_ERR(page)) |
42d96401 | 469 | err = PTR_ERR(page); |
bdbc90fa | 470 | else |
4d57b86d | 471 | err = f2fs_do_add_link(dir, &dotdot, NULL, pino, S_IFDIR); |
510022a8 | 472 | out: |
205b9822 | 473 | if (!err) |
91942321 | 474 | clear_inode_flag(dir, FI_INLINE_DOTS); |
510022a8 JK |
475 | |
476 | f2fs_unlock_op(sbi); | |
477 | return err; | |
478 | } | |
479 | ||
57397d86 JK |
480 | static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry, |
481 | unsigned int flags) | |
482 | { | |
483 | struct inode *inode = NULL; | |
484 | struct f2fs_dir_entry *de; | |
485 | struct page *page; | |
0c5e36db CY |
486 | struct dentry *new; |
487 | nid_t ino = -1; | |
fcc85a4d | 488 | int err = 0; |
8c2b1435 | 489 | unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir)); |
43c780ba | 490 | struct f2fs_filename fname; |
57397d86 | 491 | |
0c5e36db CY |
492 | trace_f2fs_lookup_start(dir, dentry, flags); |
493 | ||
0c5e36db CY |
494 | if (dentry->d_name.len > F2FS_NAME_LEN) { |
495 | err = -ENAMETOOLONG; | |
496 | goto out; | |
497 | } | |
57397d86 | 498 | |
43c780ba | 499 | err = f2fs_prepare_lookup(dir, dentry, &fname); |
bb9cd910 | 500 | generic_set_encrypted_ci_d_ops(dentry); |
b01531db EB |
501 | if (err == -ENOENT) |
502 | goto out_splice; | |
503 | if (err) | |
504 | goto out; | |
505 | de = __f2fs_find_entry(dir, &fname, &page); | |
43c780ba | 506 | f2fs_free_filename(&fname); |
b01531db | 507 | |
eb4246dc | 508 | if (!de) { |
0c5e36db CY |
509 | if (IS_ERR(page)) { |
510 | err = PTR_ERR(page); | |
511 | goto out; | |
512 | } | |
84597b1f | 513 | err = -ENOENT; |
0c5e36db | 514 | goto out_splice; |
eb4246dc | 515 | } |
57397d86 | 516 | |
06957e8f | 517 | ino = le32_to_cpu(de->ino); |
06957e8f | 518 | f2fs_put_page(page, 0); |
510022a8 | 519 | |
06957e8f | 520 | inode = f2fs_iget(dir->i_sb, ino); |
0c5e36db CY |
521 | if (IS_ERR(inode)) { |
522 | err = PTR_ERR(inode); | |
523 | goto out; | |
524 | } | |
510022a8 | 525 | |
8c2b1435 LX |
526 | if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) { |
527 | err = __recover_dot_dentries(dir, root_ino); | |
528 | if (err) | |
0c5e36db | 529 | goto out_iput; |
8c2b1435 LX |
530 | } |
531 | ||
fcc85a4d | 532 | if (f2fs_has_inline_dots(inode)) { |
06957e8f | 533 | err = __recover_dot_dentries(inode, dir->i_ino); |
fcc85a4d | 534 | if (err) |
0c5e36db | 535 | goto out_iput; |
57397d86 | 536 | } |
62230e0d | 537 | if (IS_ENCRYPTED(dir) && |
07fe8d44 DC |
538 | (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) && |
539 | !fscrypt_has_permitted_context(dir, inode)) { | |
dcbb4c10 JP |
540 | f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu", |
541 | dir->i_ino, inode->i_ino); | |
faac7fd9 | 542 | err = -EPERM; |
0c5e36db | 543 | goto out_iput; |
8074bb51 | 544 | } |
0c5e36db | 545 | out_splice: |
2c2eb7a3 DR |
546 | #ifdef CONFIG_UNICODE |
547 | if (!inode && IS_CASEFOLDED(dir)) { | |
548 | /* Eventually we want to call d_add_ci(dentry, NULL) | |
549 | * for negative dentries in the encoding case as | |
550 | * well. For now, prevent the negative dentry | |
551 | * from being cached. | |
552 | */ | |
553 | trace_f2fs_lookup_end(dir, dentry, ino, err); | |
554 | return NULL; | |
555 | } | |
556 | #endif | |
0c5e36db | 557 | new = d_splice_alias(inode, dentry); |
b01531db | 558 | err = PTR_ERR_OR_ZERO(new); |
84597b1f | 559 | trace_f2fs_lookup_end(dir, dentry, ino, !new ? -ENOENT : err); |
0c5e36db CY |
560 | return new; |
561 | out_iput: | |
d726732c | 562 | iput(inode); |
0c5e36db CY |
563 | out: |
564 | trace_f2fs_lookup_end(dir, dentry, ino, err); | |
fcc85a4d | 565 | return ERR_PTR(err); |
57397d86 JK |
566 | } |
567 | ||
568 | static int f2fs_unlink(struct inode *dir, struct dentry *dentry) | |
569 | { | |
4081363f | 570 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
2b0143b5 | 571 | struct inode *inode = d_inode(dentry); |
57397d86 JK |
572 | struct f2fs_dir_entry *de; |
573 | struct page *page; | |
deaf160f | 574 | int err; |
57397d86 | 575 | |
a2a4a7e4 | 576 | trace_f2fs_unlink_enter(dir, dentry); |
1efef832 | 577 | |
9a99c17d LK |
578 | if (unlikely(f2fs_cp_error(sbi))) { |
579 | err = -EIO; | |
580 | goto fail; | |
581 | } | |
1f227a3e | 582 | |
0abd675e | 583 | err = dquot_initialize(dir); |
d8d1389e | 584 | if (err) |
9a99c17d | 585 | goto fail; |
d8d1389e | 586 | err = dquot_initialize(inode); |
0abd675e | 587 | if (err) |
9a99c17d | 588 | goto fail; |
0abd675e | 589 | |
57397d86 | 590 | de = f2fs_find_entry(dir, &dentry->d_name, &page); |
91246c21 CY |
591 | if (!de) { |
592 | if (IS_ERR(page)) | |
593 | err = PTR_ERR(page); | |
57397d86 | 594 | goto fail; |
91246c21 | 595 | } |
57397d86 | 596 | |
2c4db1a6 | 597 | f2fs_balance_fs(sbi, true); |
00623e6b | 598 | |
ccaaca25 | 599 | f2fs_lock_op(sbi); |
4d57b86d | 600 | err = f2fs_acquire_orphan_inode(sbi); |
57397d86 | 601 | if (err) { |
ccaaca25 | 602 | f2fs_unlock_op(sbi); |
57397d86 JK |
603 | f2fs_put_page(page, 0); |
604 | goto fail; | |
605 | } | |
dbeacf02 | 606 | f2fs_delete_entry(de, page, dir, inode); |
2c2eb7a3 DR |
607 | #ifdef CONFIG_UNICODE |
608 | /* VFS negative dentries are incompatible with Encoding and | |
609 | * Case-insensitiveness. Eventually we'll want avoid | |
610 | * invalidating the dentries here, alongside with returning the | |
a87aff1d | 611 | * negative dentries at f2fs_lookup(), when it is better |
2c2eb7a3 DR |
612 | * supported by the VFS for the CI case. |
613 | */ | |
614 | if (IS_CASEFOLDED(dir)) | |
615 | d_invalidate(dentry); | |
616 | #endif | |
e479556b | 617 | f2fs_unlock_op(sbi); |
57397d86 | 618 | |
b7e1d800 JK |
619 | if (IS_DIRSYNC(dir)) |
620 | f2fs_sync_fs(sbi->sb, 1); | |
57397d86 | 621 | fail: |
a2a4a7e4 | 622 | trace_f2fs_unlink_exit(inode, err); |
57397d86 JK |
623 | return err; |
624 | } | |
625 | ||
6b255391 | 626 | static const char *f2fs_get_link(struct dentry *dentry, |
fceef393 AV |
627 | struct inode *inode, |
628 | struct delayed_call *done) | |
feb7cbb0 | 629 | { |
fceef393 | 630 | const char *link = page_get_link(dentry, inode, done); |
680baacb AV |
631 | if (!IS_ERR(link) && !*link) { |
632 | /* this is broken symlink case */ | |
fceef393 AV |
633 | do_delayed_call(done); |
634 | clear_delayed_call(done); | |
680baacb | 635 | link = ERR_PTR(-ENOENT); |
feb7cbb0 | 636 | } |
680baacb | 637 | return link; |
feb7cbb0 JK |
638 | } |
639 | ||
57397d86 JK |
640 | static int f2fs_symlink(struct inode *dir, struct dentry *dentry, |
641 | const char *symname) | |
642 | { | |
4081363f | 643 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 | 644 | struct inode *inode; |
cbaf042a | 645 | size_t len = strlen(symname); |
393c038f | 646 | struct fscrypt_str disk_link; |
e479556b | 647 | int err; |
57397d86 | 648 | |
1f227a3e JK |
649 | if (unlikely(f2fs_cp_error(sbi))) |
650 | return -EIO; | |
00e09c0b CY |
651 | if (!f2fs_is_checkpoint_ready(sbi)) |
652 | return -ENOSPC; | |
1f227a3e | 653 | |
393c038f EB |
654 | err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize, |
655 | &disk_link); | |
656 | if (err) | |
657 | return err; | |
cbaf042a | 658 | |
0abd675e CY |
659 | err = dquot_initialize(dir); |
660 | if (err) | |
661 | return err; | |
662 | ||
57397d86 JK |
663 | inode = f2fs_new_inode(dir, S_IFLNK | S_IRWXUGO); |
664 | if (IS_ERR(inode)) | |
665 | return PTR_ERR(inode); | |
666 | ||
393c038f | 667 | if (IS_ENCRYPTED(inode)) |
cbaf042a JK |
668 | inode->i_op = &f2fs_encrypted_symlink_inode_operations; |
669 | else | |
670 | inode->i_op = &f2fs_symlink_inode_operations; | |
21fc61c7 | 671 | inode_nohighmem(inode); |
57397d86 JK |
672 | inode->i_mapping->a_ops = &f2fs_dblock_aops; |
673 | ||
e479556b | 674 | f2fs_lock_op(sbi); |
57397d86 JK |
675 | err = f2fs_add_link(dentry, inode); |
676 | if (err) | |
4d57b86d | 677 | goto out_f2fs_handle_failed_inode; |
44c16156 | 678 | f2fs_unlock_op(sbi); |
4d57b86d | 679 | f2fs_alloc_nid_done(sbi, inode->i_ino); |
57397d86 | 680 | |
393c038f EB |
681 | err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link); |
682 | if (err) | |
683 | goto err_out; | |
cbaf042a | 684 | |
922ec355 | 685 | err = page_symlink(inode, disk_link.name, disk_link.len); |
cbaf042a JK |
686 | |
687 | err_out: | |
1e2e547a | 688 | d_instantiate_new(dentry, inode); |
b7e1d800 | 689 | |
d0cae97c JK |
690 | /* |
691 | * Let's flush symlink data in order to avoid broken symlink as much as | |
692 | * possible. Nevertheless, fsyncing is the best way, but there is no | |
693 | * way to get a file descriptor in order to flush that. | |
694 | * | |
695 | * Note that, it needs to do dir->fsync to make this recoverable. | |
696 | * If the symlink path is stored into inline_data, there is no | |
697 | * performance regression. | |
698 | */ | |
a6be014e | 699 | if (!err) { |
922ec355 CY |
700 | filemap_write_and_wait_range(inode->i_mapping, 0, |
701 | disk_link.len - 1); | |
d0cae97c | 702 | |
a6be014e CY |
703 | if (IS_DIRSYNC(dir)) |
704 | f2fs_sync_fs(sbi->sb, 1); | |
705 | } else { | |
706 | f2fs_unlink(dir, dentry); | |
707 | } | |
cbaf042a | 708 | |
9bb02c36 | 709 | f2fs_balance_fs(sbi, true); |
393c038f EB |
710 | goto out_free_encrypted_link; |
711 | ||
4d57b86d CY |
712 | out_f2fs_handle_failed_inode: |
713 | f2fs_handle_failed_inode(inode); | |
393c038f EB |
714 | out_free_encrypted_link: |
715 | if (disk_link.name != (unsigned char *)symname) | |
c8eb7024 | 716 | kfree(disk_link.name); |
57397d86 JK |
717 | return err; |
718 | } | |
719 | ||
720 | static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) | |
721 | { | |
4081363f | 722 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 | 723 | struct inode *inode; |
e479556b | 724 | int err; |
57397d86 | 725 | |
1f227a3e JK |
726 | if (unlikely(f2fs_cp_error(sbi))) |
727 | return -EIO; | |
728 | ||
0abd675e CY |
729 | err = dquot_initialize(dir); |
730 | if (err) | |
731 | return err; | |
732 | ||
57397d86 | 733 | inode = f2fs_new_inode(dir, S_IFDIR | mode); |
57397d86 | 734 | if (IS_ERR(inode)) |
61412b64 | 735 | return PTR_ERR(inode); |
57397d86 JK |
736 | |
737 | inode->i_op = &f2fs_dir_inode_operations; | |
738 | inode->i_fop = &f2fs_dir_operations; | |
739 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
bdbc90fa | 740 | inode_nohighmem(inode); |
57397d86 | 741 | |
91942321 | 742 | set_inode_flag(inode, FI_INC_LINK); |
e479556b | 743 | f2fs_lock_op(sbi); |
57397d86 JK |
744 | err = f2fs_add_link(dentry, inode); |
745 | if (err) | |
746 | goto out_fail; | |
44c16156 | 747 | f2fs_unlock_op(sbi); |
57397d86 | 748 | |
4d57b86d | 749 | f2fs_alloc_nid_done(sbi, inode->i_ino); |
57397d86 | 750 | |
1e2e547a | 751 | d_instantiate_new(dentry, inode); |
57397d86 | 752 | |
b7e1d800 JK |
753 | if (IS_DIRSYNC(dir)) |
754 | f2fs_sync_fs(sbi->sb, 1); | |
9bb02c36 JK |
755 | |
756 | f2fs_balance_fs(sbi, true); | |
57397d86 JK |
757 | return 0; |
758 | ||
759 | out_fail: | |
91942321 | 760 | clear_inode_flag(inode, FI_INC_LINK); |
4d57b86d | 761 | f2fs_handle_failed_inode(inode); |
57397d86 JK |
762 | return err; |
763 | } | |
764 | ||
765 | static int f2fs_rmdir(struct inode *dir, struct dentry *dentry) | |
766 | { | |
2b0143b5 | 767 | struct inode *inode = d_inode(dentry); |
57397d86 JK |
768 | if (f2fs_empty_dir(inode)) |
769 | return f2fs_unlink(dir, dentry); | |
770 | return -ENOTEMPTY; | |
771 | } | |
772 | ||
773 | static int f2fs_mknod(struct inode *dir, struct dentry *dentry, | |
774 | umode_t mode, dev_t rdev) | |
775 | { | |
4081363f | 776 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 JK |
777 | struct inode *inode; |
778 | int err = 0; | |
779 | ||
1f227a3e JK |
780 | if (unlikely(f2fs_cp_error(sbi))) |
781 | return -EIO; | |
00e09c0b CY |
782 | if (!f2fs_is_checkpoint_ready(sbi)) |
783 | return -ENOSPC; | |
1f227a3e | 784 | |
0abd675e CY |
785 | err = dquot_initialize(dir); |
786 | if (err) | |
787 | return err; | |
788 | ||
57397d86 JK |
789 | inode = f2fs_new_inode(dir, mode); |
790 | if (IS_ERR(inode)) | |
791 | return PTR_ERR(inode); | |
792 | ||
793 | init_special_inode(inode, inode->i_mode, rdev); | |
794 | inode->i_op = &f2fs_special_inode_operations; | |
795 | ||
e479556b | 796 | f2fs_lock_op(sbi); |
57397d86 JK |
797 | err = f2fs_add_link(dentry, inode); |
798 | if (err) | |
799 | goto out; | |
44c16156 | 800 | f2fs_unlock_op(sbi); |
57397d86 | 801 | |
4d57b86d | 802 | f2fs_alloc_nid_done(sbi, inode->i_ino); |
b7e1d800 | 803 | |
1e2e547a | 804 | d_instantiate_new(dentry, inode); |
b7e1d800 JK |
805 | |
806 | if (IS_DIRSYNC(dir)) | |
807 | f2fs_sync_fs(sbi->sb, 1); | |
9bb02c36 JK |
808 | |
809 | f2fs_balance_fs(sbi, true); | |
57397d86 JK |
810 | return 0; |
811 | out: | |
4d57b86d | 812 | f2fs_handle_failed_inode(inode); |
57397d86 JK |
813 | return err; |
814 | } | |
815 | ||
7e01e7ad CY |
816 | static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry, |
817 | umode_t mode, struct inode **whiteout) | |
818 | { | |
819 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
820 | struct inode *inode; | |
821 | int err; | |
822 | ||
0abd675e CY |
823 | err = dquot_initialize(dir); |
824 | if (err) | |
825 | return err; | |
826 | ||
7e01e7ad CY |
827 | inode = f2fs_new_inode(dir, mode); |
828 | if (IS_ERR(inode)) | |
829 | return PTR_ERR(inode); | |
830 | ||
831 | if (whiteout) { | |
832 | init_special_inode(inode, inode->i_mode, WHITEOUT_DEV); | |
833 | inode->i_op = &f2fs_special_inode_operations; | |
834 | } else { | |
835 | inode->i_op = &f2fs_file_inode_operations; | |
836 | inode->i_fop = &f2fs_file_operations; | |
837 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
838 | } | |
839 | ||
840 | f2fs_lock_op(sbi); | |
4d57b86d | 841 | err = f2fs_acquire_orphan_inode(sbi); |
7e01e7ad CY |
842 | if (err) |
843 | goto out; | |
844 | ||
845 | err = f2fs_do_tmpfile(inode, dir); | |
846 | if (err) | |
847 | goto release_out; | |
848 | ||
849 | /* | |
850 | * add this non-linked tmpfile to orphan list, in this way we could | |
851 | * remove all unused data of tmpfile after abnormal power-off. | |
852 | */ | |
4d57b86d CY |
853 | f2fs_add_orphan_inode(inode); |
854 | f2fs_alloc_nid_done(sbi, inode->i_ino); | |
7e01e7ad CY |
855 | |
856 | if (whiteout) { | |
a1961246 | 857 | f2fs_i_links_write(inode, false); |
cb652303 CY |
858 | |
859 | spin_lock(&inode->i_lock); | |
5b1dbb08 | 860 | inode->i_state |= I_LINKABLE; |
cb652303 CY |
861 | spin_unlock(&inode->i_lock); |
862 | ||
7e01e7ad CY |
863 | *whiteout = inode; |
864 | } else { | |
865 | d_tmpfile(dentry, inode); | |
866 | } | |
a1961246 JK |
867 | /* link_count was changed by d_tmpfile as well. */ |
868 | f2fs_unlock_op(sbi); | |
7e01e7ad | 869 | unlock_new_inode(inode); |
9bb02c36 JK |
870 | |
871 | f2fs_balance_fs(sbi, true); | |
7e01e7ad CY |
872 | return 0; |
873 | ||
874 | release_out: | |
4d57b86d | 875 | f2fs_release_orphan_inode(sbi); |
7e01e7ad | 876 | out: |
4d57b86d | 877 | f2fs_handle_failed_inode(inode); |
7e01e7ad CY |
878 | return err; |
879 | } | |
880 | ||
881 | static int f2fs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) | |
882 | { | |
ff62af20 SY |
883 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
884 | ||
885 | if (unlikely(f2fs_cp_error(sbi))) | |
1f227a3e | 886 | return -EIO; |
00e09c0b CY |
887 | if (!f2fs_is_checkpoint_ready(sbi)) |
888 | return -ENOSPC; | |
1f227a3e | 889 | |
7e01e7ad CY |
890 | return __f2fs_tmpfile(dir, dentry, mode, NULL); |
891 | } | |
892 | ||
893 | static int f2fs_create_whiteout(struct inode *dir, struct inode **whiteout) | |
894 | { | |
1f227a3e JK |
895 | if (unlikely(f2fs_cp_error(F2FS_I_SB(dir)))) |
896 | return -EIO; | |
897 | ||
7e01e7ad CY |
898 | return __f2fs_tmpfile(dir, NULL, S_IFCHR | WHITEOUT_MODE, whiteout); |
899 | } | |
900 | ||
57397d86 | 901 | static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, |
7e01e7ad CY |
902 | struct inode *new_dir, struct dentry *new_dentry, |
903 | unsigned int flags) | |
57397d86 | 904 | { |
4081363f | 905 | struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir); |
2b0143b5 DH |
906 | struct inode *old_inode = d_inode(old_dentry); |
907 | struct inode *new_inode = d_inode(new_dentry); | |
7e01e7ad | 908 | struct inode *whiteout = NULL; |
762e4db5 | 909 | struct page *old_dir_page = NULL; |
7e01e7ad | 910 | struct page *old_page, *new_page = NULL; |
57397d86 JK |
911 | struct f2fs_dir_entry *old_dir_entry = NULL; |
912 | struct f2fs_dir_entry *old_entry; | |
913 | struct f2fs_dir_entry *new_entry; | |
d83d0f5b | 914 | int err; |
57397d86 | 915 | |
1f227a3e JK |
916 | if (unlikely(f2fs_cp_error(sbi))) |
917 | return -EIO; | |
00e09c0b CY |
918 | if (!f2fs_is_checkpoint_ready(sbi)) |
919 | return -ENOSPC; | |
1f227a3e | 920 | |
5c57132e CY |
921 | if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && |
922 | (!projid_eq(F2FS_I(new_dir)->i_projid, | |
923 | F2FS_I(old_dentry->d_inode)->i_projid))) | |
924 | return -EXDEV; | |
925 | ||
b06af2af JK |
926 | /* |
927 | * If new_inode is null, the below renaming flow will | |
928 | * add a link in old_dir which can conver inline_dir. | |
929 | * After then, if we failed to get the entry due to other | |
930 | * reasons like ENOMEM, we had to remove the new entry. | |
931 | * Instead of adding such the error handling routine, let's | |
932 | * simply convert first here. | |
933 | */ | |
934 | if (old_dir == new_dir && !new_inode) { | |
935 | err = f2fs_try_convert_inline_dir(old_dir, new_dentry); | |
936 | if (err) | |
937 | return err; | |
938 | } | |
939 | ||
5b1dbb08 JK |
940 | if (flags & RENAME_WHITEOUT) { |
941 | err = f2fs_create_whiteout(old_dir, &whiteout); | |
942 | if (err) | |
943 | return err; | |
944 | } | |
945 | ||
0abd675e CY |
946 | err = dquot_initialize(old_dir); |
947 | if (err) | |
948 | goto out; | |
949 | ||
950 | err = dquot_initialize(new_dir); | |
951 | if (err) | |
952 | goto out; | |
953 | ||
d8d1389e JK |
954 | if (new_inode) { |
955 | err = dquot_initialize(new_inode); | |
956 | if (err) | |
957 | goto out; | |
958 | } | |
959 | ||
d83d0f5b | 960 | err = -ENOENT; |
57397d86 | 961 | old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page); |
91246c21 CY |
962 | if (!old_entry) { |
963 | if (IS_ERR(old_page)) | |
964 | err = PTR_ERR(old_page); | |
57397d86 | 965 | goto out; |
91246c21 | 966 | } |
57397d86 JK |
967 | |
968 | if (S_ISDIR(old_inode->i_mode)) { | |
57397d86 | 969 | old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page); |
3e19886e | 970 | if (!old_dir_entry) { |
91246c21 CY |
971 | if (IS_ERR(old_dir_page)) |
972 | err = PTR_ERR(old_dir_page); | |
57397d86 | 973 | goto out_old; |
3e19886e | 974 | } |
57397d86 JK |
975 | } |
976 | ||
57397d86 | 977 | if (new_inode) { |
57397d86 JK |
978 | |
979 | err = -ENOTEMPTY; | |
980 | if (old_dir_entry && !f2fs_empty_dir(new_inode)) | |
5b1dbb08 | 981 | goto out_dir; |
57397d86 JK |
982 | |
983 | err = -ENOENT; | |
984 | new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, | |
985 | &new_page); | |
91246c21 CY |
986 | if (!new_entry) { |
987 | if (IS_ERR(new_page)) | |
988 | err = PTR_ERR(new_page); | |
5b1dbb08 | 989 | goto out_dir; |
91246c21 | 990 | } |
57397d86 | 991 | |
2c4db1a6 | 992 | f2fs_balance_fs(sbi, true); |
00623e6b | 993 | |
1256010a CY |
994 | f2fs_lock_op(sbi); |
995 | ||
4d57b86d | 996 | err = f2fs_acquire_orphan_inode(sbi); |
cbd56e7d JK |
997 | if (err) |
998 | goto put_out_dir; | |
999 | ||
57397d86 | 1000 | f2fs_set_link(new_dir, new_entry, new_page, old_inode); |
762e4db5 | 1001 | new_page = NULL; |
57397d86 | 1002 | |
078cd827 | 1003 | new_inode->i_ctime = current_time(new_inode); |
d928bfbf | 1004 | down_write(&F2FS_I(new_inode)->i_sem); |
57397d86 | 1005 | if (old_dir_entry) |
a1961246 JK |
1006 | f2fs_i_links_write(new_inode, false); |
1007 | f2fs_i_links_write(new_inode, false); | |
d928bfbf JK |
1008 | up_write(&F2FS_I(new_inode)->i_sem); |
1009 | ||
57397d86 | 1010 | if (!new_inode->i_nlink) |
4d57b86d | 1011 | f2fs_add_orphan_inode(new_inode); |
cbd56e7d | 1012 | else |
4d57b86d | 1013 | f2fs_release_orphan_inode(sbi); |
57397d86 | 1014 | } else { |
2c4db1a6 | 1015 | f2fs_balance_fs(sbi, true); |
00623e6b | 1016 | |
1256010a CY |
1017 | f2fs_lock_op(sbi); |
1018 | ||
57397d86 | 1019 | err = f2fs_add_link(new_dentry, old_inode); |
1256010a CY |
1020 | if (err) { |
1021 | f2fs_unlock_op(sbi); | |
5b1dbb08 | 1022 | goto out_dir; |
1256010a | 1023 | } |
57397d86 | 1024 | |
ee6d182f | 1025 | if (old_dir_entry) |
a1961246 | 1026 | f2fs_i_links_write(new_dir, true); |
57397d86 JK |
1027 | } |
1028 | ||
b2c08299 | 1029 | down_write(&F2FS_I(old_inode)->i_sem); |
b855bf0e SY |
1030 | if (!old_dir_entry || whiteout) |
1031 | file_lost_pino(old_inode); | |
1032 | else | |
2a60637f CY |
1033 | /* adjust dir's i_pino to pass fsck check */ |
1034 | f2fs_i_pino_write(old_inode, new_dir->i_ino); | |
b2c08299 JK |
1035 | up_write(&F2FS_I(old_inode)->i_sem); |
1036 | ||
078cd827 | 1037 | old_inode->i_ctime = current_time(old_inode); |
7c45729a | 1038 | f2fs_mark_inode_dirty_sync(old_inode, false); |
57397d86 | 1039 | |
dbeacf02 | 1040 | f2fs_delete_entry(old_entry, old_page, old_dir, NULL); |
762e4db5 | 1041 | old_page = NULL; |
57397d86 | 1042 | |
7e01e7ad | 1043 | if (whiteout) { |
91942321 | 1044 | set_inode_flag(whiteout, FI_INC_LINK); |
7e01e7ad CY |
1045 | err = f2fs_add_link(old_dentry, whiteout); |
1046 | if (err) | |
1047 | goto put_out_dir; | |
cb652303 CY |
1048 | |
1049 | spin_lock(&whiteout->i_lock); | |
7e01e7ad | 1050 | whiteout->i_state &= ~I_LINKABLE; |
cb652303 CY |
1051 | spin_unlock(&whiteout->i_lock); |
1052 | ||
7e01e7ad CY |
1053 | iput(whiteout); |
1054 | } | |
1055 | ||
57397d86 | 1056 | if (old_dir_entry) { |
bdbc90fa | 1057 | if (old_dir != new_dir && !whiteout) |
57397d86 JK |
1058 | f2fs_set_link(old_inode, old_dir_entry, |
1059 | old_dir_page, new_dir); | |
bdbc90fa | 1060 | else |
57397d86 | 1061 | f2fs_put_page(old_dir_page, 0); |
a1961246 | 1062 | f2fs_i_links_write(old_dir, false); |
57397d86 | 1063 | } |
ade990f9 | 1064 | if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) { |
4d57b86d | 1065 | f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO); |
ade990f9 | 1066 | if (S_ISDIR(old_inode->i_mode)) |
4d57b86d CY |
1067 | f2fs_add_ino_entry(sbi, old_inode->i_ino, |
1068 | TRANS_DIR_INO); | |
ade990f9 | 1069 | } |
57397d86 | 1070 | |
e479556b | 1071 | f2fs_unlock_op(sbi); |
b7e1d800 JK |
1072 | |
1073 | if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) | |
1074 | f2fs_sync_fs(sbi->sb, 1); | |
6390398e ST |
1075 | |
1076 | f2fs_update_time(sbi, REQ_TIME); | |
57397d86 JK |
1077 | return 0; |
1078 | ||
cbd56e7d | 1079 | put_out_dir: |
1256010a | 1080 | f2fs_unlock_op(sbi); |
762e4db5 | 1081 | f2fs_put_page(new_page, 0); |
57397d86 | 1082 | out_dir: |
bdbc90fa | 1083 | if (old_dir_entry) |
57397d86 | 1084 | f2fs_put_page(old_dir_page, 0); |
57397d86 | 1085 | out_old: |
57397d86 JK |
1086 | f2fs_put_page(old_page, 0); |
1087 | out: | |
5b1dbb08 JK |
1088 | if (whiteout) |
1089 | iput(whiteout); | |
57397d86 JK |
1090 | return err; |
1091 | } | |
1092 | ||
32f9bc25 CY |
1093 | static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry, |
1094 | struct inode *new_dir, struct dentry *new_dentry) | |
1095 | { | |
4081363f | 1096 | struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir); |
2b0143b5 DH |
1097 | struct inode *old_inode = d_inode(old_dentry); |
1098 | struct inode *new_inode = d_inode(new_dentry); | |
32f9bc25 CY |
1099 | struct page *old_dir_page, *new_dir_page; |
1100 | struct page *old_page, *new_page; | |
1101 | struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL; | |
1102 | struct f2fs_dir_entry *old_entry, *new_entry; | |
1103 | int old_nlink = 0, new_nlink = 0; | |
d83d0f5b | 1104 | int err; |
363fa4e0 | 1105 | |
1f227a3e JK |
1106 | if (unlikely(f2fs_cp_error(sbi))) |
1107 | return -EIO; | |
00e09c0b CY |
1108 | if (!f2fs_is_checkpoint_ready(sbi)) |
1109 | return -ENOSPC; | |
1f227a3e | 1110 | |
5c57132e CY |
1111 | if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && |
1112 | !projid_eq(F2FS_I(new_dir)->i_projid, | |
1113 | F2FS_I(old_dentry->d_inode)->i_projid)) || | |
1114 | (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && | |
1115 | !projid_eq(F2FS_I(old_dir)->i_projid, | |
1116 | F2FS_I(new_dentry->d_inode)->i_projid))) | |
1117 | return -EXDEV; | |
1118 | ||
0abd675e CY |
1119 | err = dquot_initialize(old_dir); |
1120 | if (err) | |
1121 | goto out; | |
1122 | ||
1123 | err = dquot_initialize(new_dir); | |
1124 | if (err) | |
1125 | goto out; | |
1126 | ||
d83d0f5b | 1127 | err = -ENOENT; |
32f9bc25 | 1128 | old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page); |
91246c21 CY |
1129 | if (!old_entry) { |
1130 | if (IS_ERR(old_page)) | |
1131 | err = PTR_ERR(old_page); | |
32f9bc25 | 1132 | goto out; |
91246c21 | 1133 | } |
32f9bc25 CY |
1134 | |
1135 | new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page); | |
91246c21 CY |
1136 | if (!new_entry) { |
1137 | if (IS_ERR(new_page)) | |
1138 | err = PTR_ERR(new_page); | |
32f9bc25 | 1139 | goto out_old; |
91246c21 | 1140 | } |
32f9bc25 CY |
1141 | |
1142 | /* prepare for updating ".." directory entry info later */ | |
1143 | if (old_dir != new_dir) { | |
1144 | if (S_ISDIR(old_inode->i_mode)) { | |
32f9bc25 CY |
1145 | old_dir_entry = f2fs_parent_dir(old_inode, |
1146 | &old_dir_page); | |
3e19886e | 1147 | if (!old_dir_entry) { |
91246c21 CY |
1148 | if (IS_ERR(old_dir_page)) |
1149 | err = PTR_ERR(old_dir_page); | |
32f9bc25 | 1150 | goto out_new; |
3e19886e | 1151 | } |
32f9bc25 CY |
1152 | } |
1153 | ||
1154 | if (S_ISDIR(new_inode->i_mode)) { | |
32f9bc25 CY |
1155 | new_dir_entry = f2fs_parent_dir(new_inode, |
1156 | &new_dir_page); | |
3e19886e | 1157 | if (!new_dir_entry) { |
91246c21 CY |
1158 | if (IS_ERR(new_dir_page)) |
1159 | err = PTR_ERR(new_dir_page); | |
32f9bc25 | 1160 | goto out_old_dir; |
3e19886e | 1161 | } |
32f9bc25 CY |
1162 | } |
1163 | } | |
1164 | ||
1165 | /* | |
1166 | * If cross rename between file and directory those are not | |
1167 | * in the same directory, we will inc nlink of file's parent | |
1168 | * later, so we should check upper boundary of its nlink. | |
1169 | */ | |
1170 | if ((!old_dir_entry || !new_dir_entry) && | |
1171 | old_dir_entry != new_dir_entry) { | |
1172 | old_nlink = old_dir_entry ? -1 : 1; | |
1173 | new_nlink = -old_nlink; | |
1174 | err = -EMLINK; | |
e2f0e962 KM |
1175 | if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) || |
1176 | (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX)) | |
32f9bc25 CY |
1177 | goto out_new_dir; |
1178 | } | |
1179 | ||
2c4db1a6 | 1180 | f2fs_balance_fs(sbi, true); |
00623e6b | 1181 | |
32f9bc25 CY |
1182 | f2fs_lock_op(sbi); |
1183 | ||
32f9bc25 CY |
1184 | /* update ".." directory entry info of old dentry */ |
1185 | if (old_dir_entry) | |
1186 | f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir); | |
1187 | ||
1188 | /* update ".." directory entry info of new dentry */ | |
1189 | if (new_dir_entry) | |
1190 | f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir); | |
1191 | ||
1192 | /* update directory entry info of old dir inode */ | |
1193 | f2fs_set_link(old_dir, old_entry, old_page, new_inode); | |
1194 | ||
1195 | down_write(&F2FS_I(old_inode)->i_sem); | |
2a60637f CY |
1196 | if (!old_dir_entry) |
1197 | file_lost_pino(old_inode); | |
1198 | else | |
1199 | /* adjust dir's i_pino to pass fsck check */ | |
1200 | f2fs_i_pino_write(old_inode, new_dir->i_ino); | |
32f9bc25 CY |
1201 | up_write(&F2FS_I(old_inode)->i_sem); |
1202 | ||
078cd827 | 1203 | old_dir->i_ctime = current_time(old_dir); |
32f9bc25 CY |
1204 | if (old_nlink) { |
1205 | down_write(&F2FS_I(old_dir)->i_sem); | |
a1961246 | 1206 | f2fs_i_links_write(old_dir, old_nlink > 0); |
32f9bc25 CY |
1207 | up_write(&F2FS_I(old_dir)->i_sem); |
1208 | } | |
7c45729a | 1209 | f2fs_mark_inode_dirty_sync(old_dir, false); |
32f9bc25 CY |
1210 | |
1211 | /* update directory entry info of new dir inode */ | |
1212 | f2fs_set_link(new_dir, new_entry, new_page, old_inode); | |
1213 | ||
1214 | down_write(&F2FS_I(new_inode)->i_sem); | |
2a60637f CY |
1215 | if (!new_dir_entry) |
1216 | file_lost_pino(new_inode); | |
1217 | else | |
1218 | /* adjust dir's i_pino to pass fsck check */ | |
1219 | f2fs_i_pino_write(new_inode, old_dir->i_ino); | |
32f9bc25 CY |
1220 | up_write(&F2FS_I(new_inode)->i_sem); |
1221 | ||
078cd827 | 1222 | new_dir->i_ctime = current_time(new_dir); |
32f9bc25 CY |
1223 | if (new_nlink) { |
1224 | down_write(&F2FS_I(new_dir)->i_sem); | |
a1961246 | 1225 | f2fs_i_links_write(new_dir, new_nlink > 0); |
32f9bc25 CY |
1226 | up_write(&F2FS_I(new_dir)->i_sem); |
1227 | } | |
7c45729a | 1228 | f2fs_mark_inode_dirty_sync(new_dir, false); |
32f9bc25 | 1229 | |
63189b78 | 1230 | if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) { |
4d57b86d CY |
1231 | f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO); |
1232 | f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO); | |
93cf93f1 | 1233 | } |
0a007b97 | 1234 | |
32f9bc25 | 1235 | f2fs_unlock_op(sbi); |
b7e1d800 JK |
1236 | |
1237 | if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) | |
1238 | f2fs_sync_fs(sbi->sb, 1); | |
6390398e ST |
1239 | |
1240 | f2fs_update_time(sbi, REQ_TIME); | |
32f9bc25 | 1241 | return 0; |
32f9bc25 CY |
1242 | out_new_dir: |
1243 | if (new_dir_entry) { | |
32f9bc25 CY |
1244 | f2fs_put_page(new_dir_page, 0); |
1245 | } | |
1246 | out_old_dir: | |
1247 | if (old_dir_entry) { | |
32f9bc25 CY |
1248 | f2fs_put_page(old_dir_page, 0); |
1249 | } | |
1250 | out_new: | |
32f9bc25 CY |
1251 | f2fs_put_page(new_page, 0); |
1252 | out_old: | |
32f9bc25 CY |
1253 | f2fs_put_page(old_page, 0); |
1254 | out: | |
1255 | return err; | |
1256 | } | |
1257 | ||
1258 | static int f2fs_rename2(struct inode *old_dir, struct dentry *old_dentry, | |
1259 | struct inode *new_dir, struct dentry *new_dentry, | |
1260 | unsigned int flags) | |
1261 | { | |
2e45b07f EB |
1262 | int err; |
1263 | ||
7e01e7ad | 1264 | if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT)) |
32f9bc25 CY |
1265 | return -EINVAL; |
1266 | ||
2e45b07f EB |
1267 | err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry, |
1268 | flags); | |
1269 | if (err) | |
1270 | return err; | |
1271 | ||
32f9bc25 CY |
1272 | if (flags & RENAME_EXCHANGE) { |
1273 | return f2fs_cross_rename(old_dir, old_dentry, | |
1274 | new_dir, new_dentry); | |
1275 | } | |
1276 | /* | |
1277 | * VFS has already handled the new dentry existence case, | |
1278 | * here, we just deal with "RENAME_NOREPLACE" as regular rename. | |
1279 | */ | |
7e01e7ad | 1280 | return f2fs_rename(old_dir, old_dentry, new_dir, new_dentry, flags); |
32f9bc25 CY |
1281 | } |
1282 | ||
6b255391 | 1283 | static const char *f2fs_encrypted_get_link(struct dentry *dentry, |
fceef393 AV |
1284 | struct inode *inode, |
1285 | struct delayed_call *done) | |
50732df0 | 1286 | { |
f2329cb6 EB |
1287 | struct page *page; |
1288 | const char *target; | |
cbaf042a | 1289 | |
6b255391 AV |
1290 | if (!dentry) |
1291 | return ERR_PTR(-ECHILD); | |
1292 | ||
f2329cb6 EB |
1293 | page = read_mapping_page(inode->i_mapping, 0, NULL); |
1294 | if (IS_ERR(page)) | |
1295 | return ERR_CAST(page); | |
cbaf042a | 1296 | |
f2329cb6 EB |
1297 | target = fscrypt_get_symlink(inode, page_address(page), |
1298 | inode->i_sb->s_blocksize, done); | |
1299 | put_page(page); | |
1300 | return target; | |
50732df0 CY |
1301 | } |
1302 | ||
cbaf042a | 1303 | const struct inode_operations f2fs_encrypted_symlink_inode_operations = { |
a87aff1d | 1304 | .get_link = f2fs_encrypted_get_link, |
cbaf042a JK |
1305 | .getattr = f2fs_getattr, |
1306 | .setattr = f2fs_setattr, | |
cbaf042a | 1307 | .listxattr = f2fs_listxattr, |
cbaf042a | 1308 | }; |
cbaf042a | 1309 | |
57397d86 JK |
1310 | const struct inode_operations f2fs_dir_inode_operations = { |
1311 | .create = f2fs_create, | |
1312 | .lookup = f2fs_lookup, | |
1313 | .link = f2fs_link, | |
1314 | .unlink = f2fs_unlink, | |
1315 | .symlink = f2fs_symlink, | |
1316 | .mkdir = f2fs_mkdir, | |
1317 | .rmdir = f2fs_rmdir, | |
1318 | .mknod = f2fs_mknod, | |
2773bf00 | 1319 | .rename = f2fs_rename2, |
50732df0 | 1320 | .tmpfile = f2fs_tmpfile, |
2d4d9fb5 | 1321 | .getattr = f2fs_getattr, |
57397d86 JK |
1322 | .setattr = f2fs_setattr, |
1323 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 1324 | .set_acl = f2fs_set_acl, |
57397d86 | 1325 | .listxattr = f2fs_listxattr, |
7975f349 | 1326 | .fiemap = f2fs_fiemap, |
57397d86 JK |
1327 | }; |
1328 | ||
1329 | const struct inode_operations f2fs_symlink_inode_operations = { | |
a87aff1d | 1330 | .get_link = f2fs_get_link, |
2d4d9fb5 | 1331 | .getattr = f2fs_getattr, |
57397d86 | 1332 | .setattr = f2fs_setattr, |
57397d86 | 1333 | .listxattr = f2fs_listxattr, |
57397d86 JK |
1334 | }; |
1335 | ||
1336 | const struct inode_operations f2fs_special_inode_operations = { | |
2d4d9fb5 | 1337 | .getattr = f2fs_getattr, |
a87aff1d | 1338 | .setattr = f2fs_setattr, |
57397d86 | 1339 | .get_acl = f2fs_get_acl, |
a6dda0e6 | 1340 | .set_acl = f2fs_set_acl, |
57397d86 | 1341 | .listxattr = f2fs_listxattr, |
57397d86 | 1342 | }; |