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 | ||
21cb47be | 49 | inode_init_owner(&init_user_ns, 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 | ||
10a26878 | 77 | err = f2fs_dquot_initialize(inode); |
0abd675e CY |
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 | ||
4a67d9b0 CY |
156 | static inline int is_extension_exist(const unsigned char *s, const char *sub, |
157 | bool tmp_ext) | |
57397d86 | 158 | { |
9836b8b9 LR |
159 | size_t slen = strlen(s); |
160 | size_t sublen = strlen(sub); | |
7732c26a | 161 | int i; |
57397d86 | 162 | |
4c8ff709 CY |
163 | if (sublen == 1 && *sub == '*') |
164 | return 1; | |
165 | ||
741a7bea CY |
166 | /* |
167 | * filename format of multimedia file should be defined as: | |
7732c26a | 168 | * "filename + '.' + extension + (optional: '.' + temp extension)". |
741a7bea CY |
169 | */ |
170 | if (slen < sublen + 2) | |
171 | return 0; | |
172 | ||
4a67d9b0 CY |
173 | if (!tmp_ext) { |
174 | /* file has no temp extension */ | |
175 | if (s[slen - sublen - 1] != '.') | |
176 | return 0; | |
177 | return !strncasecmp(s + slen - sublen, sub, sublen); | |
178 | } | |
179 | ||
7732c26a CY |
180 | for (i = 1; i < slen - sublen; i++) { |
181 | if (s[i] != '.') | |
182 | continue; | |
183 | if (!strncasecmp(s + i + 1, sub, sublen)) | |
184 | return 1; | |
185 | } | |
57397d86 | 186 | |
7732c26a | 187 | return 0; |
57397d86 JK |
188 | } |
189 | ||
0a8165d7 | 190 | /* |
7a88ddb5 | 191 | * Set file's temperature for hot/cold data separation |
57397d86 | 192 | */ |
b6a06cbb | 193 | static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode, |
57397d86 JK |
194 | const unsigned char *name) |
195 | { | |
846ae671 | 196 | __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; |
b6a06cbb | 197 | int i, cold_count, hot_count; |
846ae671 CY |
198 | |
199 | down_read(&sbi->sb_lock); | |
200 | ||
b6a06cbb CY |
201 | cold_count = le32_to_cpu(sbi->raw_super->extension_count); |
202 | hot_count = sbi->raw_super->hot_ext_count; | |
57397d86 | 203 | |
b6a06cbb | 204 | for (i = 0; i < cold_count + hot_count; i++) { |
4a67d9b0 | 205 | if (is_extension_exist(name, extlist[i], true)) |
ed15ba14 | 206 | break; |
57397d86 | 207 | } |
846ae671 CY |
208 | |
209 | up_read(&sbi->sb_lock); | |
ed15ba14 CY |
210 | |
211 | if (i == cold_count + hot_count) | |
212 | return; | |
213 | ||
214 | if (i < cold_count) | |
215 | file_set_cold(inode); | |
216 | else | |
217 | file_set_hot(inode); | |
846ae671 CY |
218 | } |
219 | ||
4d57b86d | 220 | int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name, |
b6a06cbb | 221 | bool hot, bool set) |
846ae671 CY |
222 | { |
223 | __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; | |
b6a06cbb CY |
224 | int cold_count = le32_to_cpu(sbi->raw_super->extension_count); |
225 | int hot_count = sbi->raw_super->hot_ext_count; | |
226 | int total_count = cold_count + hot_count; | |
227 | int start, count; | |
846ae671 CY |
228 | int i; |
229 | ||
b6a06cbb CY |
230 | if (set) { |
231 | if (total_count == F2FS_MAX_EXTENSION) | |
232 | return -EINVAL; | |
233 | } else { | |
234 | if (!hot && !cold_count) | |
235 | return -EINVAL; | |
236 | if (hot && !hot_count) | |
237 | return -EINVAL; | |
238 | } | |
239 | ||
240 | if (hot) { | |
241 | start = cold_count; | |
242 | count = total_count; | |
243 | } else { | |
244 | start = 0; | |
245 | count = cold_count; | |
246 | } | |
247 | ||
248 | for (i = start; i < count; i++) { | |
846ae671 CY |
249 | if (strcmp(name, extlist[i])) |
250 | continue; | |
251 | ||
252 | if (set) | |
253 | return -EINVAL; | |
254 | ||
255 | memcpy(extlist[i], extlist[i + 1], | |
b6a06cbb CY |
256 | F2FS_EXTENSION_LEN * (total_count - i - 1)); |
257 | memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN); | |
258 | if (hot) | |
259 | sbi->raw_super->hot_ext_count = hot_count - 1; | |
260 | else | |
261 | sbi->raw_super->extension_count = | |
262 | cpu_to_le32(cold_count - 1); | |
846ae671 CY |
263 | return 0; |
264 | } | |
265 | ||
266 | if (!set) | |
267 | return -EINVAL; | |
268 | ||
b6a06cbb | 269 | if (hot) { |
b1385478 | 270 | memcpy(extlist[count], name, strlen(name)); |
b6a06cbb CY |
271 | sbi->raw_super->hot_ext_count = hot_count + 1; |
272 | } else { | |
273 | char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN]; | |
274 | ||
275 | memcpy(buf, &extlist[cold_count], | |
276 | F2FS_EXTENSION_LEN * hot_count); | |
277 | memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN); | |
b1385478 | 278 | memcpy(extlist[cold_count], name, strlen(name)); |
b6a06cbb CY |
279 | memcpy(&extlist[cold_count + 1], buf, |
280 | F2FS_EXTENSION_LEN * hot_count); | |
281 | sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1); | |
282 | } | |
846ae671 | 283 | return 0; |
57397d86 JK |
284 | } |
285 | ||
4c8ff709 CY |
286 | static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode, |
287 | const unsigned char *name) | |
288 | { | |
289 | __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list; | |
151b1982 FC |
290 | unsigned char (*noext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).noextensions; |
291 | unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions; | |
292 | unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt; | |
293 | unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt; | |
4c8ff709 CY |
294 | int i, cold_count, hot_count; |
295 | ||
296 | if (!f2fs_sb_has_compression(sbi) || | |
4c8ff709 | 297 | F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL || |
151b1982 FC |
298 | !f2fs_may_compress(inode) || |
299 | (!ext_cnt && !noext_cnt)) | |
4c8ff709 CY |
300 | return; |
301 | ||
302 | down_read(&sbi->sb_lock); | |
303 | ||
304 | cold_count = le32_to_cpu(sbi->raw_super->extension_count); | |
305 | hot_count = sbi->raw_super->hot_ext_count; | |
306 | ||
307 | for (i = cold_count; i < cold_count + hot_count; i++) { | |
4a67d9b0 | 308 | if (is_extension_exist(name, extlist[i], false)) { |
4c8ff709 CY |
309 | up_read(&sbi->sb_lock); |
310 | return; | |
311 | } | |
312 | } | |
313 | ||
314 | up_read(&sbi->sb_lock); | |
315 | ||
151b1982 FC |
316 | for (i = 0; i < noext_cnt; i++) { |
317 | if (is_extension_exist(name, noext[i], false)) { | |
318 | f2fs_disable_compressed_file(inode); | |
319 | return; | |
320 | } | |
321 | } | |
322 | ||
323 | if (is_inode_flag_set(inode, FI_COMPRESSED_FILE)) | |
324 | return; | |
4c8ff709 CY |
325 | |
326 | for (i = 0; i < ext_cnt; i++) { | |
4a67d9b0 | 327 | if (!is_extension_exist(name, ext[i], false)) |
4c8ff709 CY |
328 | continue; |
329 | ||
330 | set_compress_context(inode); | |
331 | return; | |
332 | } | |
333 | } | |
334 | ||
549c7297 CB |
335 | static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir, |
336 | struct dentry *dentry, umode_t mode, bool excl) | |
57397d86 | 337 | { |
4081363f | 338 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 JK |
339 | struct inode *inode; |
340 | nid_t ino = 0; | |
e479556b | 341 | int err; |
57397d86 | 342 | |
1f227a3e JK |
343 | if (unlikely(f2fs_cp_error(sbi))) |
344 | return -EIO; | |
00e09c0b CY |
345 | if (!f2fs_is_checkpoint_ready(sbi)) |
346 | return -ENOSPC; | |
1f227a3e | 347 | |
10a26878 | 348 | err = f2fs_dquot_initialize(dir); |
0abd675e CY |
349 | if (err) |
350 | return err; | |
351 | ||
57397d86 JK |
352 | inode = f2fs_new_inode(dir, mode); |
353 | if (IS_ERR(inode)) | |
354 | return PTR_ERR(inode); | |
355 | ||
356 | if (!test_opt(sbi, DISABLE_EXT_IDENTIFY)) | |
b6a06cbb | 357 | set_file_temperature(sbi, inode, dentry->d_name.name); |
57397d86 | 358 | |
4c8ff709 CY |
359 | set_compress_inode(sbi, inode, dentry->d_name.name); |
360 | ||
57397d86 JK |
361 | inode->i_op = &f2fs_file_inode_operations; |
362 | inode->i_fop = &f2fs_file_operations; | |
363 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
364 | ino = inode->i_ino; | |
365 | ||
e479556b | 366 | f2fs_lock_op(sbi); |
57397d86 JK |
367 | err = f2fs_add_link(dentry, inode); |
368 | if (err) | |
369 | goto out; | |
44c16156 | 370 | f2fs_unlock_op(sbi); |
57397d86 | 371 | |
4d57b86d | 372 | f2fs_alloc_nid_done(sbi, ino); |
57397d86 | 373 | |
1e2e547a | 374 | d_instantiate_new(dentry, inode); |
b7e1d800 JK |
375 | |
376 | if (IS_DIRSYNC(dir)) | |
377 | f2fs_sync_fs(sbi->sb, 1); | |
9bb02c36 JK |
378 | |
379 | f2fs_balance_fs(sbi, true); | |
57397d86 JK |
380 | return 0; |
381 | out: | |
4d57b86d | 382 | f2fs_handle_failed_inode(inode); |
57397d86 JK |
383 | return err; |
384 | } | |
385 | ||
386 | static int f2fs_link(struct dentry *old_dentry, struct inode *dir, | |
387 | struct dentry *dentry) | |
388 | { | |
2b0143b5 | 389 | struct inode *inode = d_inode(old_dentry); |
4081363f | 390 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
e479556b | 391 | int err; |
57397d86 | 392 | |
1f227a3e JK |
393 | if (unlikely(f2fs_cp_error(sbi))) |
394 | return -EIO; | |
00e09c0b CY |
395 | if (!f2fs_is_checkpoint_ready(sbi)) |
396 | return -ENOSPC; | |
1f227a3e | 397 | |
b05157e7 EB |
398 | err = fscrypt_prepare_link(old_dentry, dir, dentry); |
399 | if (err) | |
400 | return err; | |
fcc85a4d | 401 | |
5c57132e CY |
402 | if (is_inode_flag_set(dir, FI_PROJ_INHERIT) && |
403 | (!projid_eq(F2FS_I(dir)->i_projid, | |
404 | F2FS_I(old_dentry->d_inode)->i_projid))) | |
405 | return -EXDEV; | |
406 | ||
10a26878 | 407 | err = f2fs_dquot_initialize(dir); |
0abd675e CY |
408 | if (err) |
409 | return err; | |
410 | ||
2c4db1a6 | 411 | f2fs_balance_fs(sbi, true); |
1efef832 | 412 | |
078cd827 | 413 | inode->i_ctime = current_time(inode); |
6f6fd833 | 414 | ihold(inode); |
57397d86 | 415 | |
91942321 | 416 | set_inode_flag(inode, FI_INC_LINK); |
e479556b | 417 | f2fs_lock_op(sbi); |
57397d86 JK |
418 | err = f2fs_add_link(dentry, inode); |
419 | if (err) | |
420 | goto out; | |
44c16156 | 421 | f2fs_unlock_op(sbi); |
57397d86 JK |
422 | |
423 | d_instantiate(dentry, inode); | |
b7e1d800 JK |
424 | |
425 | if (IS_DIRSYNC(dir)) | |
426 | f2fs_sync_fs(sbi->sb, 1); | |
57397d86 JK |
427 | return 0; |
428 | out: | |
91942321 | 429 | clear_inode_flag(inode, FI_INC_LINK); |
57397d86 | 430 | iput(inode); |
44c16156 | 431 | f2fs_unlock_op(sbi); |
57397d86 JK |
432 | return err; |
433 | } | |
434 | ||
435 | struct dentry *f2fs_get_parent(struct dentry *child) | |
436 | { | |
91246c21 | 437 | struct page *page; |
80e5d1ff | 438 | unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot_name, &page); |
5f029c04 | 439 | |
91246c21 CY |
440 | if (!ino) { |
441 | if (IS_ERR(page)) | |
442 | return ERR_CAST(page); | |
57397d86 | 443 | return ERR_PTR(-ENOENT); |
91246c21 | 444 | } |
fc64005c | 445 | return d_obtain_alias(f2fs_iget(child->d_sb, ino)); |
57397d86 JK |
446 | } |
447 | ||
510022a8 JK |
448 | static int __recover_dot_dentries(struct inode *dir, nid_t pino) |
449 | { | |
450 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
451 | struct qstr dot = QSTR_INIT(".", 1); | |
452 | struct qstr dotdot = QSTR_INIT("..", 2); | |
453 | struct f2fs_dir_entry *de; | |
454 | struct page *page; | |
455 | int err = 0; | |
456 | ||
4e0d836d | 457 | if (f2fs_readonly(sbi->sb)) { |
dcbb4c10 JP |
458 | f2fs_info(sbi, "skip recovering inline_dots inode (ino:%lu, pino:%u) in readonly mountpoint", |
459 | dir->i_ino, pino); | |
4e0d836d CY |
460 | return 0; |
461 | } | |
462 | ||
10a26878 | 463 | err = f2fs_dquot_initialize(dir); |
a6d3a479 CY |
464 | if (err) |
465 | return err; | |
466 | ||
2c4db1a6 | 467 | f2fs_balance_fs(sbi, true); |
d5384174 | 468 | |
510022a8 JK |
469 | f2fs_lock_op(sbi); |
470 | ||
471 | de = f2fs_find_entry(dir, &dot, &page); | |
472 | if (de) { | |
510022a8 | 473 | f2fs_put_page(page, 0); |
42d96401 JK |
474 | } else if (IS_ERR(page)) { |
475 | err = PTR_ERR(page); | |
476 | goto out; | |
510022a8 | 477 | } else { |
4d57b86d | 478 | err = f2fs_do_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR); |
510022a8 JK |
479 | if (err) |
480 | goto out; | |
481 | } | |
482 | ||
483 | de = f2fs_find_entry(dir, &dotdot, &page); | |
bdbc90fa | 484 | if (de) |
510022a8 | 485 | f2fs_put_page(page, 0); |
bdbc90fa | 486 | else if (IS_ERR(page)) |
42d96401 | 487 | err = PTR_ERR(page); |
bdbc90fa | 488 | else |
4d57b86d | 489 | err = f2fs_do_add_link(dir, &dotdot, NULL, pino, S_IFDIR); |
510022a8 | 490 | out: |
205b9822 | 491 | if (!err) |
91942321 | 492 | clear_inode_flag(dir, FI_INLINE_DOTS); |
510022a8 JK |
493 | |
494 | f2fs_unlock_op(sbi); | |
495 | return err; | |
496 | } | |
497 | ||
57397d86 JK |
498 | static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry, |
499 | unsigned int flags) | |
500 | { | |
501 | struct inode *inode = NULL; | |
502 | struct f2fs_dir_entry *de; | |
503 | struct page *page; | |
0c5e36db CY |
504 | struct dentry *new; |
505 | nid_t ino = -1; | |
fcc85a4d | 506 | int err = 0; |
8c2b1435 | 507 | unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir)); |
43c780ba | 508 | struct f2fs_filename fname; |
57397d86 | 509 | |
0c5e36db CY |
510 | trace_f2fs_lookup_start(dir, dentry, flags); |
511 | ||
0c5e36db CY |
512 | if (dentry->d_name.len > F2FS_NAME_LEN) { |
513 | err = -ENAMETOOLONG; | |
514 | goto out; | |
515 | } | |
57397d86 | 516 | |
43c780ba | 517 | err = f2fs_prepare_lookup(dir, dentry, &fname); |
bb9cd910 | 518 | generic_set_encrypted_ci_d_ops(dentry); |
b01531db EB |
519 | if (err == -ENOENT) |
520 | goto out_splice; | |
521 | if (err) | |
522 | goto out; | |
523 | de = __f2fs_find_entry(dir, &fname, &page); | |
43c780ba | 524 | f2fs_free_filename(&fname); |
b01531db | 525 | |
eb4246dc | 526 | if (!de) { |
0c5e36db CY |
527 | if (IS_ERR(page)) { |
528 | err = PTR_ERR(page); | |
529 | goto out; | |
530 | } | |
84597b1f | 531 | err = -ENOENT; |
0c5e36db | 532 | goto out_splice; |
eb4246dc | 533 | } |
57397d86 | 534 | |
06957e8f | 535 | ino = le32_to_cpu(de->ino); |
06957e8f | 536 | f2fs_put_page(page, 0); |
510022a8 | 537 | |
06957e8f | 538 | inode = f2fs_iget(dir->i_sb, ino); |
0c5e36db CY |
539 | if (IS_ERR(inode)) { |
540 | err = PTR_ERR(inode); | |
541 | goto out; | |
542 | } | |
510022a8 | 543 | |
8c2b1435 LX |
544 | if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) { |
545 | err = __recover_dot_dentries(dir, root_ino); | |
546 | if (err) | |
0c5e36db | 547 | goto out_iput; |
8c2b1435 LX |
548 | } |
549 | ||
fcc85a4d | 550 | if (f2fs_has_inline_dots(inode)) { |
06957e8f | 551 | err = __recover_dot_dentries(inode, dir->i_ino); |
fcc85a4d | 552 | if (err) |
0c5e36db | 553 | goto out_iput; |
57397d86 | 554 | } |
62230e0d | 555 | if (IS_ENCRYPTED(dir) && |
07fe8d44 DC |
556 | (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) && |
557 | !fscrypt_has_permitted_context(dir, inode)) { | |
dcbb4c10 JP |
558 | f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu", |
559 | dir->i_ino, inode->i_ino); | |
faac7fd9 | 560 | err = -EPERM; |
0c5e36db | 561 | goto out_iput; |
8074bb51 | 562 | } |
0c5e36db | 563 | out_splice: |
2c2eb7a3 DR |
564 | #ifdef CONFIG_UNICODE |
565 | if (!inode && IS_CASEFOLDED(dir)) { | |
566 | /* Eventually we want to call d_add_ci(dentry, NULL) | |
567 | * for negative dentries in the encoding case as | |
568 | * well. For now, prevent the negative dentry | |
569 | * from being cached. | |
570 | */ | |
571 | trace_f2fs_lookup_end(dir, dentry, ino, err); | |
572 | return NULL; | |
573 | } | |
574 | #endif | |
0c5e36db | 575 | new = d_splice_alias(inode, dentry); |
b01531db | 576 | err = PTR_ERR_OR_ZERO(new); |
84597b1f | 577 | trace_f2fs_lookup_end(dir, dentry, ino, !new ? -ENOENT : err); |
0c5e36db CY |
578 | return new; |
579 | out_iput: | |
d726732c | 580 | iput(inode); |
0c5e36db CY |
581 | out: |
582 | trace_f2fs_lookup_end(dir, dentry, ino, err); | |
fcc85a4d | 583 | return ERR_PTR(err); |
57397d86 JK |
584 | } |
585 | ||
586 | static int f2fs_unlink(struct inode *dir, struct dentry *dentry) | |
587 | { | |
4081363f | 588 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
2b0143b5 | 589 | struct inode *inode = d_inode(dentry); |
57397d86 JK |
590 | struct f2fs_dir_entry *de; |
591 | struct page *page; | |
deaf160f | 592 | int err; |
57397d86 | 593 | |
a2a4a7e4 | 594 | trace_f2fs_unlink_enter(dir, dentry); |
1efef832 | 595 | |
9a99c17d LK |
596 | if (unlikely(f2fs_cp_error(sbi))) { |
597 | err = -EIO; | |
598 | goto fail; | |
599 | } | |
1f227a3e | 600 | |
10a26878 | 601 | err = f2fs_dquot_initialize(dir); |
d8d1389e | 602 | if (err) |
9a99c17d | 603 | goto fail; |
10a26878 | 604 | err = f2fs_dquot_initialize(inode); |
0abd675e | 605 | if (err) |
9a99c17d | 606 | goto fail; |
0abd675e | 607 | |
57397d86 | 608 | de = f2fs_find_entry(dir, &dentry->d_name, &page); |
91246c21 CY |
609 | if (!de) { |
610 | if (IS_ERR(page)) | |
611 | err = PTR_ERR(page); | |
57397d86 | 612 | goto fail; |
91246c21 | 613 | } |
57397d86 | 614 | |
2c4db1a6 | 615 | f2fs_balance_fs(sbi, true); |
00623e6b | 616 | |
ccaaca25 | 617 | f2fs_lock_op(sbi); |
4d57b86d | 618 | err = f2fs_acquire_orphan_inode(sbi); |
57397d86 | 619 | if (err) { |
ccaaca25 | 620 | f2fs_unlock_op(sbi); |
57397d86 JK |
621 | f2fs_put_page(page, 0); |
622 | goto fail; | |
623 | } | |
dbeacf02 | 624 | f2fs_delete_entry(de, page, dir, inode); |
2c2eb7a3 DR |
625 | #ifdef CONFIG_UNICODE |
626 | /* VFS negative dentries are incompatible with Encoding and | |
627 | * Case-insensitiveness. Eventually we'll want avoid | |
628 | * invalidating the dentries here, alongside with returning the | |
a87aff1d | 629 | * negative dentries at f2fs_lookup(), when it is better |
2c2eb7a3 DR |
630 | * supported by the VFS for the CI case. |
631 | */ | |
632 | if (IS_CASEFOLDED(dir)) | |
633 | d_invalidate(dentry); | |
634 | #endif | |
e479556b | 635 | f2fs_unlock_op(sbi); |
57397d86 | 636 | |
b7e1d800 JK |
637 | if (IS_DIRSYNC(dir)) |
638 | f2fs_sync_fs(sbi->sb, 1); | |
57397d86 | 639 | fail: |
a2a4a7e4 | 640 | trace_f2fs_unlink_exit(inode, err); |
57397d86 JK |
641 | return err; |
642 | } | |
643 | ||
6b255391 | 644 | static const char *f2fs_get_link(struct dentry *dentry, |
fceef393 AV |
645 | struct inode *inode, |
646 | struct delayed_call *done) | |
feb7cbb0 | 647 | { |
fceef393 | 648 | const char *link = page_get_link(dentry, inode, done); |
5f029c04 | 649 | |
680baacb AV |
650 | if (!IS_ERR(link) && !*link) { |
651 | /* this is broken symlink case */ | |
fceef393 AV |
652 | do_delayed_call(done); |
653 | clear_delayed_call(done); | |
680baacb | 654 | link = ERR_PTR(-ENOENT); |
feb7cbb0 | 655 | } |
680baacb | 656 | return link; |
feb7cbb0 JK |
657 | } |
658 | ||
549c7297 CB |
659 | static int f2fs_symlink(struct user_namespace *mnt_userns, struct inode *dir, |
660 | struct dentry *dentry, const char *symname) | |
57397d86 | 661 | { |
4081363f | 662 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 | 663 | struct inode *inode; |
cbaf042a | 664 | size_t len = strlen(symname); |
393c038f | 665 | struct fscrypt_str disk_link; |
e479556b | 666 | int err; |
57397d86 | 667 | |
1f227a3e JK |
668 | if (unlikely(f2fs_cp_error(sbi))) |
669 | return -EIO; | |
00e09c0b CY |
670 | if (!f2fs_is_checkpoint_ready(sbi)) |
671 | return -ENOSPC; | |
1f227a3e | 672 | |
393c038f EB |
673 | err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize, |
674 | &disk_link); | |
675 | if (err) | |
676 | return err; | |
cbaf042a | 677 | |
10a26878 | 678 | err = f2fs_dquot_initialize(dir); |
0abd675e CY |
679 | if (err) |
680 | return err; | |
681 | ||
57397d86 JK |
682 | inode = f2fs_new_inode(dir, S_IFLNK | S_IRWXUGO); |
683 | if (IS_ERR(inode)) | |
684 | return PTR_ERR(inode); | |
685 | ||
393c038f | 686 | if (IS_ENCRYPTED(inode)) |
cbaf042a JK |
687 | inode->i_op = &f2fs_encrypted_symlink_inode_operations; |
688 | else | |
689 | inode->i_op = &f2fs_symlink_inode_operations; | |
21fc61c7 | 690 | inode_nohighmem(inode); |
57397d86 JK |
691 | inode->i_mapping->a_ops = &f2fs_dblock_aops; |
692 | ||
e479556b | 693 | f2fs_lock_op(sbi); |
57397d86 JK |
694 | err = f2fs_add_link(dentry, inode); |
695 | if (err) | |
4d57b86d | 696 | goto out_f2fs_handle_failed_inode; |
44c16156 | 697 | f2fs_unlock_op(sbi); |
4d57b86d | 698 | f2fs_alloc_nid_done(sbi, inode->i_ino); |
57397d86 | 699 | |
393c038f EB |
700 | err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link); |
701 | if (err) | |
702 | goto err_out; | |
cbaf042a | 703 | |
922ec355 | 704 | err = page_symlink(inode, disk_link.name, disk_link.len); |
cbaf042a JK |
705 | |
706 | err_out: | |
1e2e547a | 707 | d_instantiate_new(dentry, inode); |
b7e1d800 | 708 | |
d0cae97c JK |
709 | /* |
710 | * Let's flush symlink data in order to avoid broken symlink as much as | |
711 | * possible. Nevertheless, fsyncing is the best way, but there is no | |
712 | * way to get a file descriptor in order to flush that. | |
713 | * | |
714 | * Note that, it needs to do dir->fsync to make this recoverable. | |
715 | * If the symlink path is stored into inline_data, there is no | |
716 | * performance regression. | |
717 | */ | |
a6be014e | 718 | if (!err) { |
922ec355 CY |
719 | filemap_write_and_wait_range(inode->i_mapping, 0, |
720 | disk_link.len - 1); | |
d0cae97c | 721 | |
a6be014e CY |
722 | if (IS_DIRSYNC(dir)) |
723 | f2fs_sync_fs(sbi->sb, 1); | |
724 | } else { | |
725 | f2fs_unlink(dir, dentry); | |
726 | } | |
cbaf042a | 727 | |
9bb02c36 | 728 | f2fs_balance_fs(sbi, true); |
393c038f EB |
729 | goto out_free_encrypted_link; |
730 | ||
4d57b86d CY |
731 | out_f2fs_handle_failed_inode: |
732 | f2fs_handle_failed_inode(inode); | |
393c038f EB |
733 | out_free_encrypted_link: |
734 | if (disk_link.name != (unsigned char *)symname) | |
c8eb7024 | 735 | kfree(disk_link.name); |
57397d86 JK |
736 | return err; |
737 | } | |
738 | ||
549c7297 CB |
739 | static int f2fs_mkdir(struct user_namespace *mnt_userns, struct inode *dir, |
740 | struct dentry *dentry, umode_t mode) | |
57397d86 | 741 | { |
4081363f | 742 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 | 743 | struct inode *inode; |
e479556b | 744 | int err; |
57397d86 | 745 | |
1f227a3e JK |
746 | if (unlikely(f2fs_cp_error(sbi))) |
747 | return -EIO; | |
748 | ||
10a26878 | 749 | err = f2fs_dquot_initialize(dir); |
0abd675e CY |
750 | if (err) |
751 | return err; | |
752 | ||
57397d86 | 753 | inode = f2fs_new_inode(dir, S_IFDIR | mode); |
57397d86 | 754 | if (IS_ERR(inode)) |
61412b64 | 755 | return PTR_ERR(inode); |
57397d86 JK |
756 | |
757 | inode->i_op = &f2fs_dir_inode_operations; | |
758 | inode->i_fop = &f2fs_dir_operations; | |
759 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
92d602bc | 760 | mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); |
57397d86 | 761 | |
91942321 | 762 | set_inode_flag(inode, FI_INC_LINK); |
e479556b | 763 | f2fs_lock_op(sbi); |
57397d86 JK |
764 | err = f2fs_add_link(dentry, inode); |
765 | if (err) | |
766 | goto out_fail; | |
44c16156 | 767 | f2fs_unlock_op(sbi); |
57397d86 | 768 | |
4d57b86d | 769 | f2fs_alloc_nid_done(sbi, inode->i_ino); |
57397d86 | 770 | |
1e2e547a | 771 | d_instantiate_new(dentry, inode); |
57397d86 | 772 | |
b7e1d800 JK |
773 | if (IS_DIRSYNC(dir)) |
774 | f2fs_sync_fs(sbi->sb, 1); | |
9bb02c36 JK |
775 | |
776 | f2fs_balance_fs(sbi, true); | |
57397d86 JK |
777 | return 0; |
778 | ||
779 | out_fail: | |
91942321 | 780 | clear_inode_flag(inode, FI_INC_LINK); |
4d57b86d | 781 | f2fs_handle_failed_inode(inode); |
57397d86 JK |
782 | return err; |
783 | } | |
784 | ||
785 | static int f2fs_rmdir(struct inode *dir, struct dentry *dentry) | |
786 | { | |
2b0143b5 | 787 | struct inode *inode = d_inode(dentry); |
5f029c04 | 788 | |
57397d86 JK |
789 | if (f2fs_empty_dir(inode)) |
790 | return f2fs_unlink(dir, dentry); | |
791 | return -ENOTEMPTY; | |
792 | } | |
793 | ||
549c7297 CB |
794 | static int f2fs_mknod(struct user_namespace *mnt_userns, struct inode *dir, |
795 | struct dentry *dentry, umode_t mode, dev_t rdev) | |
57397d86 | 796 | { |
4081363f | 797 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
57397d86 JK |
798 | struct inode *inode; |
799 | int err = 0; | |
800 | ||
1f227a3e JK |
801 | if (unlikely(f2fs_cp_error(sbi))) |
802 | return -EIO; | |
00e09c0b CY |
803 | if (!f2fs_is_checkpoint_ready(sbi)) |
804 | return -ENOSPC; | |
1f227a3e | 805 | |
10a26878 | 806 | err = f2fs_dquot_initialize(dir); |
0abd675e CY |
807 | if (err) |
808 | return err; | |
809 | ||
57397d86 JK |
810 | inode = f2fs_new_inode(dir, mode); |
811 | if (IS_ERR(inode)) | |
812 | return PTR_ERR(inode); | |
813 | ||
814 | init_special_inode(inode, inode->i_mode, rdev); | |
815 | inode->i_op = &f2fs_special_inode_operations; | |
816 | ||
e479556b | 817 | f2fs_lock_op(sbi); |
57397d86 JK |
818 | err = f2fs_add_link(dentry, inode); |
819 | if (err) | |
820 | goto out; | |
44c16156 | 821 | f2fs_unlock_op(sbi); |
57397d86 | 822 | |
4d57b86d | 823 | f2fs_alloc_nid_done(sbi, inode->i_ino); |
b7e1d800 | 824 | |
1e2e547a | 825 | d_instantiate_new(dentry, inode); |
b7e1d800 JK |
826 | |
827 | if (IS_DIRSYNC(dir)) | |
828 | f2fs_sync_fs(sbi->sb, 1); | |
9bb02c36 JK |
829 | |
830 | f2fs_balance_fs(sbi, true); | |
57397d86 JK |
831 | return 0; |
832 | out: | |
4d57b86d | 833 | f2fs_handle_failed_inode(inode); |
57397d86 JK |
834 | return err; |
835 | } | |
836 | ||
7e01e7ad CY |
837 | static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry, |
838 | umode_t mode, struct inode **whiteout) | |
839 | { | |
840 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); | |
841 | struct inode *inode; | |
842 | int err; | |
843 | ||
10a26878 | 844 | err = f2fs_dquot_initialize(dir); |
0abd675e CY |
845 | if (err) |
846 | return err; | |
847 | ||
7e01e7ad CY |
848 | inode = f2fs_new_inode(dir, mode); |
849 | if (IS_ERR(inode)) | |
850 | return PTR_ERR(inode); | |
851 | ||
852 | if (whiteout) { | |
853 | init_special_inode(inode, inode->i_mode, WHITEOUT_DEV); | |
854 | inode->i_op = &f2fs_special_inode_operations; | |
855 | } else { | |
856 | inode->i_op = &f2fs_file_inode_operations; | |
857 | inode->i_fop = &f2fs_file_operations; | |
858 | inode->i_mapping->a_ops = &f2fs_dblock_aops; | |
859 | } | |
860 | ||
861 | f2fs_lock_op(sbi); | |
4d57b86d | 862 | err = f2fs_acquire_orphan_inode(sbi); |
7e01e7ad CY |
863 | if (err) |
864 | goto out; | |
865 | ||
866 | err = f2fs_do_tmpfile(inode, dir); | |
867 | if (err) | |
868 | goto release_out; | |
869 | ||
870 | /* | |
871 | * add this non-linked tmpfile to orphan list, in this way we could | |
872 | * remove all unused data of tmpfile after abnormal power-off. | |
873 | */ | |
4d57b86d CY |
874 | f2fs_add_orphan_inode(inode); |
875 | f2fs_alloc_nid_done(sbi, inode->i_ino); | |
7e01e7ad CY |
876 | |
877 | if (whiteout) { | |
a1961246 | 878 | f2fs_i_links_write(inode, false); |
46085f37 CY |
879 | |
880 | spin_lock(&inode->i_lock); | |
5b1dbb08 | 881 | inode->i_state |= I_LINKABLE; |
46085f37 CY |
882 | spin_unlock(&inode->i_lock); |
883 | ||
7e01e7ad CY |
884 | *whiteout = inode; |
885 | } else { | |
886 | d_tmpfile(dentry, inode); | |
887 | } | |
a1961246 JK |
888 | /* link_count was changed by d_tmpfile as well. */ |
889 | f2fs_unlock_op(sbi); | |
7e01e7ad | 890 | unlock_new_inode(inode); |
9bb02c36 JK |
891 | |
892 | f2fs_balance_fs(sbi, true); | |
7e01e7ad CY |
893 | return 0; |
894 | ||
895 | release_out: | |
4d57b86d | 896 | f2fs_release_orphan_inode(sbi); |
7e01e7ad | 897 | out: |
4d57b86d | 898 | f2fs_handle_failed_inode(inode); |
7e01e7ad CY |
899 | return err; |
900 | } | |
901 | ||
549c7297 CB |
902 | static int f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir, |
903 | struct dentry *dentry, umode_t mode) | |
7e01e7ad | 904 | { |
ff62af20 SY |
905 | struct f2fs_sb_info *sbi = F2FS_I_SB(dir); |
906 | ||
907 | if (unlikely(f2fs_cp_error(sbi))) | |
1f227a3e | 908 | return -EIO; |
00e09c0b CY |
909 | if (!f2fs_is_checkpoint_ready(sbi)) |
910 | return -ENOSPC; | |
1f227a3e | 911 | |
7e01e7ad CY |
912 | return __f2fs_tmpfile(dir, dentry, mode, NULL); |
913 | } | |
914 | ||
915 | static int f2fs_create_whiteout(struct inode *dir, struct inode **whiteout) | |
916 | { | |
1f227a3e JK |
917 | if (unlikely(f2fs_cp_error(F2FS_I_SB(dir)))) |
918 | return -EIO; | |
919 | ||
7e01e7ad CY |
920 | return __f2fs_tmpfile(dir, NULL, S_IFCHR | WHITEOUT_MODE, whiteout); |
921 | } | |
922 | ||
57397d86 | 923 | static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, |
7e01e7ad CY |
924 | struct inode *new_dir, struct dentry *new_dentry, |
925 | unsigned int flags) | |
57397d86 | 926 | { |
4081363f | 927 | struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir); |
2b0143b5 DH |
928 | struct inode *old_inode = d_inode(old_dentry); |
929 | struct inode *new_inode = d_inode(new_dentry); | |
7e01e7ad | 930 | struct inode *whiteout = NULL; |
762e4db5 | 931 | struct page *old_dir_page = NULL; |
7e01e7ad | 932 | struct page *old_page, *new_page = NULL; |
57397d86 JK |
933 | struct f2fs_dir_entry *old_dir_entry = NULL; |
934 | struct f2fs_dir_entry *old_entry; | |
935 | struct f2fs_dir_entry *new_entry; | |
d83d0f5b | 936 | int err; |
57397d86 | 937 | |
1f227a3e JK |
938 | if (unlikely(f2fs_cp_error(sbi))) |
939 | return -EIO; | |
00e09c0b CY |
940 | if (!f2fs_is_checkpoint_ready(sbi)) |
941 | return -ENOSPC; | |
1f227a3e | 942 | |
5c57132e CY |
943 | if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && |
944 | (!projid_eq(F2FS_I(new_dir)->i_projid, | |
945 | F2FS_I(old_dentry->d_inode)->i_projid))) | |
946 | return -EXDEV; | |
947 | ||
b06af2af JK |
948 | /* |
949 | * If new_inode is null, the below renaming flow will | |
950 | * add a link in old_dir which can conver inline_dir. | |
951 | * After then, if we failed to get the entry due to other | |
952 | * reasons like ENOMEM, we had to remove the new entry. | |
953 | * Instead of adding such the error handling routine, let's | |
954 | * simply convert first here. | |
955 | */ | |
956 | if (old_dir == new_dir && !new_inode) { | |
957 | err = f2fs_try_convert_inline_dir(old_dir, new_dentry); | |
958 | if (err) | |
959 | return err; | |
960 | } | |
961 | ||
5b1dbb08 JK |
962 | if (flags & RENAME_WHITEOUT) { |
963 | err = f2fs_create_whiteout(old_dir, &whiteout); | |
964 | if (err) | |
965 | return err; | |
966 | } | |
967 | ||
10a26878 | 968 | err = f2fs_dquot_initialize(old_dir); |
0abd675e CY |
969 | if (err) |
970 | goto out; | |
971 | ||
10a26878 | 972 | err = f2fs_dquot_initialize(new_dir); |
0abd675e CY |
973 | if (err) |
974 | goto out; | |
975 | ||
d8d1389e | 976 | if (new_inode) { |
10a26878 | 977 | err = f2fs_dquot_initialize(new_inode); |
d8d1389e JK |
978 | if (err) |
979 | goto out; | |
980 | } | |
981 | ||
d83d0f5b | 982 | err = -ENOENT; |
57397d86 | 983 | old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page); |
91246c21 CY |
984 | if (!old_entry) { |
985 | if (IS_ERR(old_page)) | |
986 | err = PTR_ERR(old_page); | |
57397d86 | 987 | goto out; |
91246c21 | 988 | } |
57397d86 JK |
989 | |
990 | if (S_ISDIR(old_inode->i_mode)) { | |
57397d86 | 991 | old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page); |
3e19886e | 992 | if (!old_dir_entry) { |
91246c21 CY |
993 | if (IS_ERR(old_dir_page)) |
994 | err = PTR_ERR(old_dir_page); | |
57397d86 | 995 | goto out_old; |
3e19886e | 996 | } |
57397d86 JK |
997 | } |
998 | ||
57397d86 | 999 | if (new_inode) { |
57397d86 JK |
1000 | |
1001 | err = -ENOTEMPTY; | |
1002 | if (old_dir_entry && !f2fs_empty_dir(new_inode)) | |
5b1dbb08 | 1003 | goto out_dir; |
57397d86 JK |
1004 | |
1005 | err = -ENOENT; | |
1006 | new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, | |
1007 | &new_page); | |
91246c21 CY |
1008 | if (!new_entry) { |
1009 | if (IS_ERR(new_page)) | |
1010 | err = PTR_ERR(new_page); | |
5b1dbb08 | 1011 | goto out_dir; |
91246c21 | 1012 | } |
57397d86 | 1013 | |
2c4db1a6 | 1014 | f2fs_balance_fs(sbi, true); |
00623e6b | 1015 | |
1256010a CY |
1016 | f2fs_lock_op(sbi); |
1017 | ||
4d57b86d | 1018 | err = f2fs_acquire_orphan_inode(sbi); |
cbd56e7d JK |
1019 | if (err) |
1020 | goto put_out_dir; | |
1021 | ||
57397d86 | 1022 | f2fs_set_link(new_dir, new_entry, new_page, old_inode); |
762e4db5 | 1023 | new_page = NULL; |
57397d86 | 1024 | |
078cd827 | 1025 | new_inode->i_ctime = current_time(new_inode); |
d928bfbf | 1026 | down_write(&F2FS_I(new_inode)->i_sem); |
57397d86 | 1027 | if (old_dir_entry) |
a1961246 JK |
1028 | f2fs_i_links_write(new_inode, false); |
1029 | f2fs_i_links_write(new_inode, false); | |
d928bfbf JK |
1030 | up_write(&F2FS_I(new_inode)->i_sem); |
1031 | ||
57397d86 | 1032 | if (!new_inode->i_nlink) |
4d57b86d | 1033 | f2fs_add_orphan_inode(new_inode); |
cbd56e7d | 1034 | else |
4d57b86d | 1035 | f2fs_release_orphan_inode(sbi); |
57397d86 | 1036 | } else { |
2c4db1a6 | 1037 | f2fs_balance_fs(sbi, true); |
00623e6b | 1038 | |
1256010a CY |
1039 | f2fs_lock_op(sbi); |
1040 | ||
57397d86 | 1041 | err = f2fs_add_link(new_dentry, old_inode); |
1256010a CY |
1042 | if (err) { |
1043 | f2fs_unlock_op(sbi); | |
5b1dbb08 | 1044 | goto out_dir; |
1256010a | 1045 | } |
57397d86 | 1046 | |
ee6d182f | 1047 | if (old_dir_entry) |
a1961246 | 1048 | f2fs_i_links_write(new_dir, true); |
57397d86 JK |
1049 | } |
1050 | ||
b2c08299 | 1051 | down_write(&F2FS_I(old_inode)->i_sem); |
b855bf0e SY |
1052 | if (!old_dir_entry || whiteout) |
1053 | file_lost_pino(old_inode); | |
1054 | else | |
2a60637f CY |
1055 | /* adjust dir's i_pino to pass fsck check */ |
1056 | f2fs_i_pino_write(old_inode, new_dir->i_ino); | |
b2c08299 JK |
1057 | up_write(&F2FS_I(old_inode)->i_sem); |
1058 | ||
078cd827 | 1059 | old_inode->i_ctime = current_time(old_inode); |
7c45729a | 1060 | f2fs_mark_inode_dirty_sync(old_inode, false); |
57397d86 | 1061 | |
dbeacf02 | 1062 | f2fs_delete_entry(old_entry, old_page, old_dir, NULL); |
762e4db5 | 1063 | old_page = NULL; |
57397d86 | 1064 | |
7e01e7ad | 1065 | if (whiteout) { |
91942321 | 1066 | set_inode_flag(whiteout, FI_INC_LINK); |
7e01e7ad CY |
1067 | err = f2fs_add_link(old_dentry, whiteout); |
1068 | if (err) | |
1069 | goto put_out_dir; | |
46085f37 CY |
1070 | |
1071 | spin_lock(&whiteout->i_lock); | |
7e01e7ad | 1072 | whiteout->i_state &= ~I_LINKABLE; |
46085f37 CY |
1073 | spin_unlock(&whiteout->i_lock); |
1074 | ||
7e01e7ad CY |
1075 | iput(whiteout); |
1076 | } | |
1077 | ||
57397d86 | 1078 | if (old_dir_entry) { |
bdbc90fa | 1079 | if (old_dir != new_dir && !whiteout) |
57397d86 JK |
1080 | f2fs_set_link(old_inode, old_dir_entry, |
1081 | old_dir_page, new_dir); | |
bdbc90fa | 1082 | else |
57397d86 | 1083 | f2fs_put_page(old_dir_page, 0); |
a1961246 | 1084 | f2fs_i_links_write(old_dir, false); |
57397d86 | 1085 | } |
ade990f9 | 1086 | if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) { |
4d57b86d | 1087 | f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO); |
ade990f9 | 1088 | if (S_ISDIR(old_inode->i_mode)) |
4d57b86d CY |
1089 | f2fs_add_ino_entry(sbi, old_inode->i_ino, |
1090 | TRANS_DIR_INO); | |
ade990f9 | 1091 | } |
57397d86 | 1092 | |
e479556b | 1093 | f2fs_unlock_op(sbi); |
b7e1d800 JK |
1094 | |
1095 | if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) | |
1096 | f2fs_sync_fs(sbi->sb, 1); | |
6390398e ST |
1097 | |
1098 | f2fs_update_time(sbi, REQ_TIME); | |
57397d86 JK |
1099 | return 0; |
1100 | ||
cbd56e7d | 1101 | put_out_dir: |
1256010a | 1102 | f2fs_unlock_op(sbi); |
762e4db5 | 1103 | f2fs_put_page(new_page, 0); |
57397d86 | 1104 | out_dir: |
bdbc90fa | 1105 | if (old_dir_entry) |
57397d86 | 1106 | f2fs_put_page(old_dir_page, 0); |
57397d86 | 1107 | out_old: |
57397d86 JK |
1108 | f2fs_put_page(old_page, 0); |
1109 | out: | |
5b1dbb08 JK |
1110 | if (whiteout) |
1111 | iput(whiteout); | |
57397d86 JK |
1112 | return err; |
1113 | } | |
1114 | ||
32f9bc25 CY |
1115 | static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry, |
1116 | struct inode *new_dir, struct dentry *new_dentry) | |
1117 | { | |
4081363f | 1118 | struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir); |
2b0143b5 DH |
1119 | struct inode *old_inode = d_inode(old_dentry); |
1120 | struct inode *new_inode = d_inode(new_dentry); | |
32f9bc25 CY |
1121 | struct page *old_dir_page, *new_dir_page; |
1122 | struct page *old_page, *new_page; | |
1123 | struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL; | |
1124 | struct f2fs_dir_entry *old_entry, *new_entry; | |
1125 | int old_nlink = 0, new_nlink = 0; | |
d83d0f5b | 1126 | int err; |
363fa4e0 | 1127 | |
1f227a3e JK |
1128 | if (unlikely(f2fs_cp_error(sbi))) |
1129 | return -EIO; | |
00e09c0b CY |
1130 | if (!f2fs_is_checkpoint_ready(sbi)) |
1131 | return -ENOSPC; | |
1f227a3e | 1132 | |
5c57132e CY |
1133 | if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && |
1134 | !projid_eq(F2FS_I(new_dir)->i_projid, | |
1135 | F2FS_I(old_dentry->d_inode)->i_projid)) || | |
1136 | (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) && | |
1137 | !projid_eq(F2FS_I(old_dir)->i_projid, | |
1138 | F2FS_I(new_dentry->d_inode)->i_projid))) | |
1139 | return -EXDEV; | |
1140 | ||
10a26878 | 1141 | err = f2fs_dquot_initialize(old_dir); |
0abd675e CY |
1142 | if (err) |
1143 | goto out; | |
1144 | ||
10a26878 | 1145 | err = f2fs_dquot_initialize(new_dir); |
0abd675e CY |
1146 | if (err) |
1147 | goto out; | |
1148 | ||
d83d0f5b | 1149 | err = -ENOENT; |
32f9bc25 | 1150 | old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page); |
91246c21 CY |
1151 | if (!old_entry) { |
1152 | if (IS_ERR(old_page)) | |
1153 | err = PTR_ERR(old_page); | |
32f9bc25 | 1154 | goto out; |
91246c21 | 1155 | } |
32f9bc25 CY |
1156 | |
1157 | new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page); | |
91246c21 CY |
1158 | if (!new_entry) { |
1159 | if (IS_ERR(new_page)) | |
1160 | err = PTR_ERR(new_page); | |
32f9bc25 | 1161 | goto out_old; |
91246c21 | 1162 | } |
32f9bc25 CY |
1163 | |
1164 | /* prepare for updating ".." directory entry info later */ | |
1165 | if (old_dir != new_dir) { | |
1166 | if (S_ISDIR(old_inode->i_mode)) { | |
32f9bc25 CY |
1167 | old_dir_entry = f2fs_parent_dir(old_inode, |
1168 | &old_dir_page); | |
3e19886e | 1169 | if (!old_dir_entry) { |
91246c21 CY |
1170 | if (IS_ERR(old_dir_page)) |
1171 | err = PTR_ERR(old_dir_page); | |
32f9bc25 | 1172 | goto out_new; |
3e19886e | 1173 | } |
32f9bc25 CY |
1174 | } |
1175 | ||
1176 | if (S_ISDIR(new_inode->i_mode)) { | |
32f9bc25 CY |
1177 | new_dir_entry = f2fs_parent_dir(new_inode, |
1178 | &new_dir_page); | |
3e19886e | 1179 | if (!new_dir_entry) { |
91246c21 CY |
1180 | if (IS_ERR(new_dir_page)) |
1181 | err = PTR_ERR(new_dir_page); | |
32f9bc25 | 1182 | goto out_old_dir; |
3e19886e | 1183 | } |
32f9bc25 CY |
1184 | } |
1185 | } | |
1186 | ||
1187 | /* | |
1188 | * If cross rename between file and directory those are not | |
1189 | * in the same directory, we will inc nlink of file's parent | |
1190 | * later, so we should check upper boundary of its nlink. | |
1191 | */ | |
1192 | if ((!old_dir_entry || !new_dir_entry) && | |
1193 | old_dir_entry != new_dir_entry) { | |
1194 | old_nlink = old_dir_entry ? -1 : 1; | |
1195 | new_nlink = -old_nlink; | |
1196 | err = -EMLINK; | |
e2f0e962 KM |
1197 | if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) || |
1198 | (new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX)) | |
32f9bc25 CY |
1199 | goto out_new_dir; |
1200 | } | |
1201 | ||
2c4db1a6 | 1202 | f2fs_balance_fs(sbi, true); |
00623e6b | 1203 | |
32f9bc25 CY |
1204 | f2fs_lock_op(sbi); |
1205 | ||
32f9bc25 CY |
1206 | /* update ".." directory entry info of old dentry */ |
1207 | if (old_dir_entry) | |
1208 | f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir); | |
1209 | ||
1210 | /* update ".." directory entry info of new dentry */ | |
1211 | if (new_dir_entry) | |
1212 | f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir); | |
1213 | ||
1214 | /* update directory entry info of old dir inode */ | |
1215 | f2fs_set_link(old_dir, old_entry, old_page, new_inode); | |
1216 | ||
1217 | down_write(&F2FS_I(old_inode)->i_sem); | |
2a60637f CY |
1218 | if (!old_dir_entry) |
1219 | file_lost_pino(old_inode); | |
1220 | else | |
1221 | /* adjust dir's i_pino to pass fsck check */ | |
1222 | f2fs_i_pino_write(old_inode, new_dir->i_ino); | |
32f9bc25 CY |
1223 | up_write(&F2FS_I(old_inode)->i_sem); |
1224 | ||
078cd827 | 1225 | old_dir->i_ctime = current_time(old_dir); |
32f9bc25 CY |
1226 | if (old_nlink) { |
1227 | down_write(&F2FS_I(old_dir)->i_sem); | |
a1961246 | 1228 | f2fs_i_links_write(old_dir, old_nlink > 0); |
32f9bc25 CY |
1229 | up_write(&F2FS_I(old_dir)->i_sem); |
1230 | } | |
7c45729a | 1231 | f2fs_mark_inode_dirty_sync(old_dir, false); |
32f9bc25 CY |
1232 | |
1233 | /* update directory entry info of new dir inode */ | |
1234 | f2fs_set_link(new_dir, new_entry, new_page, old_inode); | |
1235 | ||
1236 | down_write(&F2FS_I(new_inode)->i_sem); | |
2a60637f CY |
1237 | if (!new_dir_entry) |
1238 | file_lost_pino(new_inode); | |
1239 | else | |
1240 | /* adjust dir's i_pino to pass fsck check */ | |
1241 | f2fs_i_pino_write(new_inode, old_dir->i_ino); | |
32f9bc25 CY |
1242 | up_write(&F2FS_I(new_inode)->i_sem); |
1243 | ||
078cd827 | 1244 | new_dir->i_ctime = current_time(new_dir); |
32f9bc25 CY |
1245 | if (new_nlink) { |
1246 | down_write(&F2FS_I(new_dir)->i_sem); | |
a1961246 | 1247 | f2fs_i_links_write(new_dir, new_nlink > 0); |
32f9bc25 CY |
1248 | up_write(&F2FS_I(new_dir)->i_sem); |
1249 | } | |
7c45729a | 1250 | f2fs_mark_inode_dirty_sync(new_dir, false); |
32f9bc25 | 1251 | |
63189b78 | 1252 | if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) { |
4d57b86d CY |
1253 | f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO); |
1254 | f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO); | |
93cf93f1 | 1255 | } |
0a007b97 | 1256 | |
32f9bc25 | 1257 | f2fs_unlock_op(sbi); |
b7e1d800 JK |
1258 | |
1259 | if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) | |
1260 | f2fs_sync_fs(sbi->sb, 1); | |
6390398e ST |
1261 | |
1262 | f2fs_update_time(sbi, REQ_TIME); | |
32f9bc25 | 1263 | return 0; |
32f9bc25 CY |
1264 | out_new_dir: |
1265 | if (new_dir_entry) { | |
32f9bc25 CY |
1266 | f2fs_put_page(new_dir_page, 0); |
1267 | } | |
1268 | out_old_dir: | |
1269 | if (old_dir_entry) { | |
32f9bc25 CY |
1270 | f2fs_put_page(old_dir_page, 0); |
1271 | } | |
1272 | out_new: | |
32f9bc25 CY |
1273 | f2fs_put_page(new_page, 0); |
1274 | out_old: | |
32f9bc25 CY |
1275 | f2fs_put_page(old_page, 0); |
1276 | out: | |
1277 | return err; | |
1278 | } | |
1279 | ||
549c7297 CB |
1280 | static int f2fs_rename2(struct user_namespace *mnt_userns, |
1281 | struct inode *old_dir, struct dentry *old_dentry, | |
32f9bc25 CY |
1282 | struct inode *new_dir, struct dentry *new_dentry, |
1283 | unsigned int flags) | |
1284 | { | |
2e45b07f EB |
1285 | int err; |
1286 | ||
7e01e7ad | 1287 | if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT)) |
32f9bc25 CY |
1288 | return -EINVAL; |
1289 | ||
2e45b07f EB |
1290 | err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry, |
1291 | flags); | |
1292 | if (err) | |
1293 | return err; | |
1294 | ||
32f9bc25 CY |
1295 | if (flags & RENAME_EXCHANGE) { |
1296 | return f2fs_cross_rename(old_dir, old_dentry, | |
1297 | new_dir, new_dentry); | |
1298 | } | |
1299 | /* | |
1300 | * VFS has already handled the new dentry existence case, | |
1301 | * here, we just deal with "RENAME_NOREPLACE" as regular rename. | |
1302 | */ | |
7e01e7ad | 1303 | return f2fs_rename(old_dir, old_dentry, new_dir, new_dentry, flags); |
32f9bc25 CY |
1304 | } |
1305 | ||
6b255391 | 1306 | static const char *f2fs_encrypted_get_link(struct dentry *dentry, |
fceef393 AV |
1307 | struct inode *inode, |
1308 | struct delayed_call *done) | |
50732df0 | 1309 | { |
f2329cb6 EB |
1310 | struct page *page; |
1311 | const char *target; | |
cbaf042a | 1312 | |
6b255391 AV |
1313 | if (!dentry) |
1314 | return ERR_PTR(-ECHILD); | |
1315 | ||
f2329cb6 EB |
1316 | page = read_mapping_page(inode->i_mapping, 0, NULL); |
1317 | if (IS_ERR(page)) | |
1318 | return ERR_CAST(page); | |
cbaf042a | 1319 | |
f2329cb6 EB |
1320 | target = fscrypt_get_symlink(inode, page_address(page), |
1321 | inode->i_sb->s_blocksize, done); | |
1322 | put_page(page); | |
1323 | return target; | |
50732df0 CY |
1324 | } |
1325 | ||
461b43a8 EB |
1326 | static int f2fs_encrypted_symlink_getattr(struct user_namespace *mnt_userns, |
1327 | const struct path *path, | |
1328 | struct kstat *stat, u32 request_mask, | |
1329 | unsigned int query_flags) | |
1330 | { | |
1331 | f2fs_getattr(mnt_userns, path, stat, request_mask, query_flags); | |
1332 | ||
1333 | return fscrypt_symlink_getattr(path, stat); | |
1334 | } | |
1335 | ||
cbaf042a | 1336 | const struct inode_operations f2fs_encrypted_symlink_inode_operations = { |
a87aff1d | 1337 | .get_link = f2fs_encrypted_get_link, |
461b43a8 | 1338 | .getattr = f2fs_encrypted_symlink_getattr, |
cbaf042a | 1339 | .setattr = f2fs_setattr, |
cbaf042a | 1340 | .listxattr = f2fs_listxattr, |
cbaf042a | 1341 | }; |
cbaf042a | 1342 | |
57397d86 JK |
1343 | const struct inode_operations f2fs_dir_inode_operations = { |
1344 | .create = f2fs_create, | |
1345 | .lookup = f2fs_lookup, | |
1346 | .link = f2fs_link, | |
1347 | .unlink = f2fs_unlink, | |
1348 | .symlink = f2fs_symlink, | |
1349 | .mkdir = f2fs_mkdir, | |
1350 | .rmdir = f2fs_rmdir, | |
1351 | .mknod = f2fs_mknod, | |
2773bf00 | 1352 | .rename = f2fs_rename2, |
50732df0 | 1353 | .tmpfile = f2fs_tmpfile, |
2d4d9fb5 | 1354 | .getattr = f2fs_getattr, |
57397d86 JK |
1355 | .setattr = f2fs_setattr, |
1356 | .get_acl = f2fs_get_acl, | |
a6dda0e6 | 1357 | .set_acl = f2fs_set_acl, |
57397d86 | 1358 | .listxattr = f2fs_listxattr, |
7975f349 | 1359 | .fiemap = f2fs_fiemap, |
9b1bb01c MS |
1360 | .fileattr_get = f2fs_fileattr_get, |
1361 | .fileattr_set = f2fs_fileattr_set, | |
57397d86 JK |
1362 | }; |
1363 | ||
1364 | const struct inode_operations f2fs_symlink_inode_operations = { | |
a87aff1d | 1365 | .get_link = f2fs_get_link, |
2d4d9fb5 | 1366 | .getattr = f2fs_getattr, |
57397d86 | 1367 | .setattr = f2fs_setattr, |
57397d86 | 1368 | .listxattr = f2fs_listxattr, |
57397d86 JK |
1369 | }; |
1370 | ||
1371 | const struct inode_operations f2fs_special_inode_operations = { | |
2d4d9fb5 | 1372 | .getattr = f2fs_getattr, |
a87aff1d | 1373 | .setattr = f2fs_setattr, |
57397d86 | 1374 | .get_acl = f2fs_get_acl, |
a6dda0e6 | 1375 | .set_acl = f2fs_set_acl, |
57397d86 | 1376 | .listxattr = f2fs_listxattr, |
57397d86 | 1377 | }; |