1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * fs/f2fs/inode.c
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
7 */
8 #include <linux/fs.h>
9 #include <linux/f2fs_fs.h>
10 #include <linux/buffer_head.h>
11 #include <linux/writeback.h>
12 #include <linux/sched/mm.h>
13 #include <linux/lz4.h>
14 #include <linux/zstd.h>
15
16 #include "f2fs.h"
17 #include "node.h"
18 #include "segment.h"
19 #include "xattr.h"
20
21 #include <trace/events/f2fs.h>
22
23 #ifdef CONFIG_F2FS_FS_COMPRESSION
24 extern const struct address_space_operations f2fs_compress_aops;
25 #endif
26
27 void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync)
28 {
29 if (is_inode_flag_set(inode, FI_NEW_INODE))
30 return;
31
32 if (f2fs_readonly(F2FS_I_SB(inode)->sb))
33 return;
34
35 if (f2fs_inode_dirtied(inode, sync))
36 return;
37
38 mark_inode_dirty_sync(inode);
39 }
40
41 void f2fs_set_inode_flags(struct inode *inode)
42 {
43 unsigned int flags = F2FS_I(inode)->i_flags;
44 unsigned int new_fl = 0;
45
46 if (flags & F2FS_SYNC_FL)
47 new_fl |= S_SYNC;
48 if (flags & F2FS_APPEND_FL)
49 new_fl |= S_APPEND;
50 if (flags & F2FS_IMMUTABLE_FL)
51 new_fl |= S_IMMUTABLE;
52 if (flags & F2FS_NOATIME_FL)
53 new_fl |= S_NOATIME;
54 if (flags & F2FS_DIRSYNC_FL)
55 new_fl |= S_DIRSYNC;
56 if (file_is_encrypt(inode))
57 new_fl |= S_ENCRYPTED;
58 if (file_is_verity(inode))
59 new_fl |= S_VERITY;
60 if (flags & F2FS_CASEFOLD_FL)
61 new_fl |= S_CASEFOLD;
62 inode_set_flags(inode, new_fl,
63 S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|
64 S_ENCRYPTED|S_VERITY|S_CASEFOLD);
65 }
66
67 static void __get_inode_rdev(struct inode *inode, struct page *node_page)
68 {
69 __le32 *addr = get_dnode_addr(inode, node_page);
70
71 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
72 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
73 if (addr[0])
74 inode->i_rdev = old_decode_dev(le32_to_cpu(addr[0]));
75 else
76 inode->i_rdev = new_decode_dev(le32_to_cpu(addr[1]));
77 }
78 }
79
80 static void __set_inode_rdev(struct inode *inode, struct page *node_page)
81 {
82 __le32 *addr = get_dnode_addr(inode, node_page);
83
84 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
85 if (old_valid_dev(inode->i_rdev)) {
86 addr[0] = cpu_to_le32(old_encode_dev(inode->i_rdev));
87 addr[1] = 0;
88 } else {
89 addr[0] = 0;
90 addr[1] = cpu_to_le32(new_encode_dev(inode->i_rdev));
91 addr[2] = 0;
92 }
93 }
94 }
95
96 static void __recover_inline_status(struct inode *inode, struct page *ipage)
97 {
98 void *inline_data = inline_data_addr(inode, ipage);
99 __le32 *start = inline_data;
100 __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);
101
102 while (start < end) {
103 if (*start++) {
104 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
105
106 set_inode_flag(inode, FI_DATA_EXIST);
107 set_raw_inline(inode, F2FS_INODE(ipage));
108 set_page_dirty(ipage);
109 return;
110 }
111 }
112 return;
113 }
114
115 static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
116 {
117 struct f2fs_inode *ri = &F2FS_NODE(page)->i;
118
119 if (!f2fs_sb_has_inode_chksum(sbi))
120 return false;
121
122 if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR))
123 return false;
124
125 if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize),
126 i_inode_checksum))
127 return false;
128
129 return true;
130 }
131
132 static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
133 {
134 struct f2fs_node *node = F2FS_NODE(page);
135 struct f2fs_inode *ri = &node->i;
136 __le32 ino = node->footer.ino;
137 __le32 gen = ri->i_generation;
138 __u32 chksum, chksum_seed;
139 __u32 dummy_cs = 0;
140 unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum);
141 unsigned int cs_size = sizeof(dummy_cs);
142
143 chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino,
144 sizeof(ino));
145 chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen));
146
147 chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset);
148 chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size);
149 offset += cs_size;
150 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset,
151 F2FS_BLKSIZE - offset);
152 return chksum;
153 }
154
155 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)
156 {
157 struct f2fs_inode *ri;
158 __u32 provided, calculated;
159
160 if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)))
161 return true;
162
163 #ifdef CONFIG_F2FS_CHECK_FS
164 if (!f2fs_enable_inode_chksum(sbi, page))
165 #else
166 if (!f2fs_enable_inode_chksum(sbi, page) ||
167 PageDirty(page) ||
168 folio_test_writeback(page_folio(page)))
169 #endif
170 return true;
171
172 ri = &F2FS_NODE(page)->i;
173 provided = le32_to_cpu(ri->i_inode_checksum);
174 calculated = f2fs_inode_chksum(sbi, page);
175
176 if (provided != calculated)
177 f2fs_warn(sbi, "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x",
178 page->index, ino_of_node(page), provided, calculated);
179
180 return provided == calculated;
181 }
182
183 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page)
184 {
185 struct f2fs_inode *ri = &F2FS_NODE(page)->i;
186
187 if (!f2fs_enable_inode_chksum(sbi, page))
188 return;
189
190 ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page));
191 }
192
193 static bool sanity_check_compress_inode(struct inode *inode,
194 struct f2fs_inode *ri)
195 {
196 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
197 unsigned char clevel;
198
199 if (ri->i_compress_algorithm >= COMPRESS_MAX) {
200 f2fs_warn(sbi,
201 "%s: inode (ino=%lx) has unsupported compress algorithm: %u, run fsck to fix",
202 __func__, inode->i_ino, ri->i_compress_algorithm);
203 return false;
204 }
205 if (le64_to_cpu(ri->i_compr_blocks) >
206 SECTOR_TO_BLOCK(inode->i_blocks)) {
207 f2fs_warn(sbi,
208 "%s: inode (ino=%lx) has inconsistent i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix",
209 __func__, inode->i_ino, le64_to_cpu(ri->i_compr_blocks),
210 SECTOR_TO_BLOCK(inode->i_blocks));
211 return false;
212 }
213 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
214 ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) {
215 f2fs_warn(sbi,
216 "%s: inode (ino=%lx) has unsupported log cluster size: %u, run fsck to fix",
217 __func__, inode->i_ino, ri->i_log_cluster_size);
218 return false;
219 }
220
221 clevel = le16_to_cpu(ri->i_compress_flag) >>
222 COMPRESS_LEVEL_OFFSET;
223 switch (ri->i_compress_algorithm) {
224 case COMPRESS_LZO:
225 #ifdef CONFIG_F2FS_FS_LZO
226 if (clevel)
227 goto err_level;
228 #endif
229 break;
230 case COMPRESS_LZORLE:
231 #ifdef CONFIG_F2FS_FS_LZORLE
232 if (clevel)
233 goto err_level;
234 #endif
235 break;
236 case COMPRESS_LZ4:
237 #ifdef CONFIG_F2FS_FS_LZ4
238 #ifdef CONFIG_F2FS_FS_LZ4HC
239 if (clevel &&
240 (clevel < LZ4HC_MIN_CLEVEL || clevel > LZ4HC_MAX_CLEVEL))
241 goto err_level;
242 #else
243 if (clevel)
244 goto err_level;
245 #endif
246 #endif
247 break;
248 case COMPRESS_ZSTD:
249 #ifdef CONFIG_F2FS_FS_ZSTD
250 if (clevel < zstd_min_clevel() || clevel > zstd_max_clevel())
251 goto err_level;
252 #endif
253 break;
254 default:
255 goto err_level;
256 }
257
258 return true;
259 err_level:
260 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported compress level: %u, run fsck to fix",
261 __func__, inode->i_ino, clevel);
262 return false;
263 }
264
265 static bool sanity_check_inode(struct inode *inode, struct page *node_page)
266 {
267 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
268 struct f2fs_inode_info *fi = F2FS_I(inode);
269 struct f2fs_inode *ri = F2FS_INODE(node_page);
270 unsigned long long iblocks;
271
272 iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks);
273 if (!iblocks) {
274 f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.",
275 __func__, inode->i_ino, iblocks);
276 return false;
277 }
278
279 if (ino_of_node(node_page) != nid_of_node(node_page)) {
280 f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.",
281 __func__, inode->i_ino,
282 ino_of_node(node_page), nid_of_node(node_page));
283 return false;
284 }
285
286 if (f2fs_has_extra_attr(inode)) {
287 if (!f2fs_sb_has_extra_attr(sbi)) {
288 f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off",
289 __func__, inode->i_ino);
290 return false;
291 }
292 if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE ||
293 fi->i_extra_isize < F2FS_MIN_EXTRA_ATTR_SIZE ||
294 fi->i_extra_isize % sizeof(__le32)) {
295 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu",
296 __func__, inode->i_ino, fi->i_extra_isize,
297 F2FS_TOTAL_EXTRA_ATTR_SIZE);
298 return false;
299 }
300 if (f2fs_sb_has_flexible_inline_xattr(sbi) &&
301 f2fs_has_inline_xattr(inode) &&
302 (!fi->i_inline_xattr_size ||
303 fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) {
304 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %lu",
305 __func__, inode->i_ino, fi->i_inline_xattr_size,
306 MAX_INLINE_XATTR_SIZE);
307 return false;
308 }
309 if (f2fs_sb_has_compression(sbi) &&
310 fi->i_flags & F2FS_COMPR_FL &&
311 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
312 i_compress_flag)) {
313 if (!sanity_check_compress_inode(inode, ri))
314 return false;
315 }
316 }
317
318 if (!f2fs_sb_has_extra_attr(sbi)) {
319 if (f2fs_sb_has_project_quota(sbi)) {
320 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",
321 __func__, inode->i_ino, F2FS_FEATURE_PRJQUOTA);
322 return false;
323 }
324 if (f2fs_sb_has_inode_chksum(sbi)) {
325 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",
326 __func__, inode->i_ino, F2FS_FEATURE_INODE_CHKSUM);
327 return false;
328 }
329 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
330 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",
331 __func__, inode->i_ino, F2FS_FEATURE_FLEXIBLE_INLINE_XATTR);
332 return false;
333 }
334 if (f2fs_sb_has_inode_crtime(sbi)) {
335 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",
336 __func__, inode->i_ino, F2FS_FEATURE_INODE_CRTIME);
337 return false;
338 }
339 if (f2fs_sb_has_compression(sbi)) {
340 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",
341 __func__, inode->i_ino, F2FS_FEATURE_COMPRESSION);
342 return false;
343 }
344 }
345
346 if (f2fs_sanity_check_inline_data(inode, node_page)) {
347 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix",
348 __func__, inode->i_ino, inode->i_mode);
349 return false;
350 }
351
352 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
353 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix",
354 __func__, inode->i_ino, inode->i_mode);
355 return false;
356 }
357
358 if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) {
359 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off",
360 __func__, inode->i_ino);
361 return false;
362 }
363
364 if (fi->i_xattr_nid && f2fs_check_nid_range(sbi, fi->i_xattr_nid)) {
365 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_xattr_nid: %u, run fsck to fix.",
366 __func__, inode->i_ino, fi->i_xattr_nid);
367 return false;
368 }
369
370 return true;
371 }
372
373 static void init_idisk_time(struct inode *inode)
374 {
375 struct f2fs_inode_info *fi = F2FS_I(inode);
376
377 fi->i_disk_time[0] = inode_get_atime(inode);
378 fi->i_disk_time[1] = inode_get_ctime(inode);
379 fi->i_disk_time[2] = inode_get_mtime(inode);
380 }
381
382 static int do_read_inode(struct inode *inode)
383 {
384 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
385 struct f2fs_inode_info *fi = F2FS_I(inode);
386 struct page *node_page;
387 struct f2fs_inode *ri;
388 projid_t i_projid;
389
390 /* Check if ino is within scope */
391 if (f2fs_check_nid_range(sbi, inode->i_ino))
392 return -EINVAL;
393
394 node_page = f2fs_get_node_page(sbi, inode->i_ino);
395 if (IS_ERR(node_page))
396 return PTR_ERR(node_page);
397
398 ri = F2FS_INODE(node_page);
399
400 inode->i_mode = le16_to_cpu(ri->i_mode);
401 i_uid_write(inode, le32_to_cpu(ri->i_uid));
402 i_gid_write(inode, le32_to_cpu(ri->i_gid));
403 set_nlink(inode, le32_to_cpu(ri->i_links));
404 inode->i_size = le64_to_cpu(ri->i_size);
405 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
406
407 inode_set_atime(inode, le64_to_cpu(ri->i_atime),
408 le32_to_cpu(ri->i_atime_nsec));
409 inode_set_ctime(inode, le64_to_cpu(ri->i_ctime),
410 le32_to_cpu(ri->i_ctime_nsec));
411 inode_set_mtime(inode, le64_to_cpu(ri->i_mtime),
412 le32_to_cpu(ri->i_mtime_nsec));
413 inode->i_generation = le32_to_cpu(ri->i_generation);
414 if (S_ISDIR(inode->i_mode))
415 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
416 else if (S_ISREG(inode->i_mode))
417 fi->i_gc_failures = le16_to_cpu(ri->i_gc_failures);
418 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
419 fi->i_flags = le32_to_cpu(ri->i_flags);
420 if (S_ISREG(inode->i_mode))
421 fi->i_flags &= ~F2FS_PROJINHERIT_FL;
422 bitmap_zero(fi->flags, FI_MAX);
423 fi->i_advise = ri->i_advise;
424 fi->i_pino = le32_to_cpu(ri->i_pino);
425 fi->i_dir_level = ri->i_dir_level;
426
427 get_inline_info(inode, ri);
428
429 fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
430 le16_to_cpu(ri->i_extra_isize) : 0;
431
432 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
433 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
434 } else if (f2fs_has_inline_xattr(inode) ||
435 f2fs_has_inline_dentry(inode)) {
436 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
437 } else {
438
439 /*
440 * Previous inline data or directory always reserved 200 bytes
441 * in inode layout, even if inline_xattr is disabled. In order
442 * to keep inline_dentry's structure for backward compatibility,
443 * we get the space back only from inline_data.
444 */
445 fi->i_inline_xattr_size = 0;
446 }
447
448 if (!sanity_check_inode(inode, node_page)) {
449 f2fs_put_page(node_page, 1);
450 set_sbi_flag(sbi, SBI_NEED_FSCK);
451 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
452 return -EFSCORRUPTED;
453 }
454
455 /* check data exist */
456 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
457 __recover_inline_status(inode, node_page);
458
459 /* try to recover cold bit for non-dir inode */
460 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) {
461 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
462 set_cold_node(node_page, false);
463 set_page_dirty(node_page);
464 }
465
466 /* get rdev by using inline_info */
467 __get_inode_rdev(inode, node_page);
468
469 if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
470 fi->last_disk_size = inode->i_size;
471
472 if (fi->i_flags & F2FS_PROJINHERIT_FL)
473 set_inode_flag(inode, FI_PROJ_INHERIT);
474
475 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) &&
476 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
477 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
478 else
479 i_projid = F2FS_DEF_PROJID;
480 fi->i_projid = make_kprojid(&init_user_ns, i_projid);
481
482 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) &&
483 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
484 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
485 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
486 }
487
488 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
489 (fi->i_flags & F2FS_COMPR_FL)) {
490 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
491 i_compress_flag)) {
492 unsigned short compress_flag;
493
494 atomic_set(&fi->i_compr_blocks,
495 le64_to_cpu(ri->i_compr_blocks));
496 fi->i_compress_algorithm = ri->i_compress_algorithm;
497 fi->i_log_cluster_size = ri->i_log_cluster_size;
498 compress_flag = le16_to_cpu(ri->i_compress_flag);
499 fi->i_compress_level = compress_flag >>
500 COMPRESS_LEVEL_OFFSET;
501 fi->i_compress_flag = compress_flag &
502 GENMASK(COMPRESS_LEVEL_OFFSET - 1, 0);
503 fi->i_cluster_size = BIT(fi->i_log_cluster_size);
504 set_inode_flag(inode, FI_COMPRESSED_FILE);
505 }
506 }
507
508 init_idisk_time(inode);
509
510 if (!sanity_check_extent_cache(inode, node_page)) {
511 f2fs_put_page(node_page, 1);
512 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
513 return -EFSCORRUPTED;
514 }
515
516 /* Need all the flag bits */
517 f2fs_init_read_extent_tree(inode, node_page);
518 f2fs_init_age_extent_tree(inode);
519
520 f2fs_put_page(node_page, 1);
521
522 stat_inc_inline_xattr(inode);
523 stat_inc_inline_inode(inode);
524 stat_inc_inline_dir(inode);
525 stat_inc_compr_inode(inode);
526 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks));
527
528 return 0;
529 }
530
531 static bool is_meta_ino(struct f2fs_sb_info *sbi, unsigned int ino)
532 {
533 return ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi) ||
534 ino == F2FS_COMPRESS_INO(sbi);
535 }
536
537 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
538 {
539 struct f2fs_sb_info *sbi = F2FS_SB(sb);
540 struct inode *inode;
541 int ret = 0;
542
543 inode = iget_locked(sb, ino);
544 if (!inode)
545 return ERR_PTR(-ENOMEM);
546
547 if (!(inode->i_state & I_NEW)) {
548 if (is_meta_ino(sbi, ino)) {
549 f2fs_err(sbi, "inaccessible inode: %lu, run fsck to repair", ino);
550 set_sbi_flag(sbi, SBI_NEED_FSCK);
551 ret = -EFSCORRUPTED;
552 trace_f2fs_iget_exit(inode, ret);
553 iput(inode);
554 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
555 return ERR_PTR(ret);
556 }
557
558 trace_f2fs_iget(inode);
559 return inode;
560 }
561
562 if (is_meta_ino(sbi, ino))
563 goto make_now;
564
565 ret = do_read_inode(inode);
566 if (ret)
567 goto bad_inode;
568 make_now:
569 if (ino == F2FS_NODE_INO(sbi)) {
570 inode->i_mapping->a_ops = &f2fs_node_aops;
571 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
572 } else if (ino == F2FS_META_INO(sbi)) {
573 inode->i_mapping->a_ops = &f2fs_meta_aops;
574 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
575 } else if (ino == F2FS_COMPRESS_INO(sbi)) {
576 #ifdef CONFIG_F2FS_FS_COMPRESSION
577 inode->i_mapping->a_ops = &f2fs_compress_aops;
578 /*
579 * generic_error_remove_folio only truncates pages of regular
580 * inode
581 */
582 inode->i_mode |= S_IFREG;
583 #endif
584 mapping_set_gfp_mask(inode->i_mapping,
585 GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE);
586 } else if (S_ISREG(inode->i_mode)) {
587 inode->i_op = &f2fs_file_inode_operations;
588 inode->i_fop = &f2fs_file_operations;
589 inode->i_mapping->a_ops = &f2fs_dblock_aops;
590 } else if (S_ISDIR(inode->i_mode)) {
591 inode->i_op = &f2fs_dir_inode_operations;
592 inode->i_fop = &f2fs_dir_operations;
593 inode->i_mapping->a_ops = &f2fs_dblock_aops;
594 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
595 } else if (S_ISLNK(inode->i_mode)) {
596 if (file_is_encrypt(inode))
597 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
598 else
599 inode->i_op = &f2fs_symlink_inode_operations;
600 inode_nohighmem(inode);
601 inode->i_mapping->a_ops = &f2fs_dblock_aops;
602 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
603 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
604 inode->i_op = &f2fs_special_inode_operations;
605 init_special_inode(inode, inode->i_mode, inode->i_rdev);
606 } else {
607 ret = -EIO;
608 goto bad_inode;
609 }
610 f2fs_set_inode_flags(inode);
611
612 unlock_new_inode(inode);
613 trace_f2fs_iget(inode);
614 return inode;
615
616 bad_inode:
617 f2fs_inode_synced(inode);
618 iget_failed(inode);
619 trace_f2fs_iget_exit(inode, ret);
620 return ERR_PTR(ret);
621 }
622
623 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
624 {
625 struct inode *inode;
626 retry:
627 inode = f2fs_iget(sb, ino);
628 if (IS_ERR(inode)) {
629 if (PTR_ERR(inode) == -ENOMEM) {
630 memalloc_retry_wait(GFP_NOFS);
631 goto retry;
632 }
633 }
634 return inode;
635 }
636
637 void f2fs_update_inode(struct inode *inode, struct page *node_page)
638 {
639 struct f2fs_inode_info *fi = F2FS_I(inode);
640 struct f2fs_inode *ri;
641 struct extent_tree *et = fi->extent_tree[EX_READ];
642
643 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
644 set_page_dirty(node_page);
645
646 f2fs_inode_synced(inode);
647
648 ri = F2FS_INODE(node_page);
649
650 ri->i_mode = cpu_to_le16(inode->i_mode);
651 ri->i_advise = fi->i_advise;
652 ri->i_uid = cpu_to_le32(i_uid_read(inode));
653 ri->i_gid = cpu_to_le32(i_gid_read(inode));
654 ri->i_links = cpu_to_le32(inode->i_nlink);
655 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
656
657 if (!f2fs_is_atomic_file(inode) ||
658 is_inode_flag_set(inode, FI_ATOMIC_COMMITTED))
659 ri->i_size = cpu_to_le64(i_size_read(inode));
660
661 if (et) {
662 read_lock(&et->lock);
663 set_raw_read_extent(&et->largest, &ri->i_ext);
664 read_unlock(&et->lock);
665 } else {
666 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
667 }
668 set_raw_inline(inode, ri);
669
670 ri->i_atime = cpu_to_le64(inode_get_atime_sec(inode));
671 ri->i_ctime = cpu_to_le64(inode_get_ctime_sec(inode));
672 ri->i_mtime = cpu_to_le64(inode_get_mtime_sec(inode));
673 ri->i_atime_nsec = cpu_to_le32(inode_get_atime_nsec(inode));
674 ri->i_ctime_nsec = cpu_to_le32(inode_get_ctime_nsec(inode));
675 ri->i_mtime_nsec = cpu_to_le32(inode_get_mtime_nsec(inode));
676 if (S_ISDIR(inode->i_mode))
677 ri->i_current_depth = cpu_to_le32(fi->i_current_depth);
678 else if (S_ISREG(inode->i_mode))
679 ri->i_gc_failures = cpu_to_le16(fi->i_gc_failures);
680 ri->i_xattr_nid = cpu_to_le32(fi->i_xattr_nid);
681 ri->i_flags = cpu_to_le32(fi->i_flags);
682 ri->i_pino = cpu_to_le32(fi->i_pino);
683 ri->i_generation = cpu_to_le32(inode->i_generation);
684 ri->i_dir_level = fi->i_dir_level;
685
686 if (f2fs_has_extra_attr(inode)) {
687 ri->i_extra_isize = cpu_to_le16(fi->i_extra_isize);
688
689 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)))
690 ri->i_inline_xattr_size =
691 cpu_to_le16(fi->i_inline_xattr_size);
692
693 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) &&
694 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid)) {
695 projid_t i_projid;
696
697 i_projid = from_kprojid(&init_user_ns, fi->i_projid);
698 ri->i_projid = cpu_to_le32(i_projid);
699 }
700
701 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
702 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
703 ri->i_crtime = cpu_to_le64(fi->i_crtime.tv_sec);
704 ri->i_crtime_nsec = cpu_to_le32(fi->i_crtime.tv_nsec);
705 }
706
707 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) &&
708 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
709 i_compress_flag)) {
710 unsigned short compress_flag;
711
712 ri->i_compr_blocks = cpu_to_le64(
713 atomic_read(&fi->i_compr_blocks));
714 ri->i_compress_algorithm = fi->i_compress_algorithm;
715 compress_flag = fi->i_compress_flag |
716 fi->i_compress_level <<
717 COMPRESS_LEVEL_OFFSET;
718 ri->i_compress_flag = cpu_to_le16(compress_flag);
719 ri->i_log_cluster_size = fi->i_log_cluster_size;
720 }
721 }
722
723 __set_inode_rdev(inode, node_page);
724
725 /* deleted inode */
726 if (inode->i_nlink == 0)
727 clear_page_private_inline(node_page);
728
729 init_idisk_time(inode);
730 #ifdef CONFIG_F2FS_CHECK_FS
731 f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);
732 #endif
733 }
734
735 void f2fs_update_inode_page(struct inode *inode)
736 {
737 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
738 struct page *node_page;
739 int count = 0;
740 retry:
741 node_page = f2fs_get_node_page(sbi, inode->i_ino);
742 if (IS_ERR(node_page)) {
743 int err = PTR_ERR(node_page);
744
745 /* The node block was truncated. */
746 if (err == -ENOENT)
747 return;
748
749 if (err == -ENOMEM || ++count <= DEFAULT_RETRY_IO_COUNT)
750 goto retry;
751 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_UPDATE_INODE);
752 return;
753 }
754 f2fs_update_inode(inode, node_page);
755 f2fs_put_page(node_page, 1);
756 }
757
758 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
759 {
760 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
761
762 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
763 inode->i_ino == F2FS_META_INO(sbi))
764 return 0;
765
766 /*
767 * atime could be updated without dirtying f2fs inode in lazytime mode
768 */
769 if (f2fs_is_time_consistent(inode) &&
770 !is_inode_flag_set(inode, FI_DIRTY_INODE))
771 return 0;
772
773 if (!f2fs_is_checkpoint_ready(sbi))
774 return -ENOSPC;
775
776 /*
777 * We need to balance fs here to prevent from producing dirty node pages
778 * during the urgent cleaning time when running out of free sections.
779 */
780 f2fs_update_inode_page(inode);
781 if (wbc && wbc->nr_to_write)
782 f2fs_balance_fs(sbi, true);
783 return 0;
784 }
785
786 /*
787 * Called at the last iput() if i_nlink is zero
788 */
789 void f2fs_evict_inode(struct inode *inode)
790 {
791 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
792 struct f2fs_inode_info *fi = F2FS_I(inode);
793 nid_t xnid = fi->i_xattr_nid;
794 int err = 0;
795 bool freeze_protected = false;
796
797 f2fs_abort_atomic_write(inode, true);
798
799 if (fi->cow_inode && f2fs_is_cow_file(fi->cow_inode)) {
800 clear_inode_flag(fi->cow_inode, FI_COW_FILE);
801 F2FS_I(fi->cow_inode)->atomic_inode = NULL;
802 iput(fi->cow_inode);
803 fi->cow_inode = NULL;
804 }
805
806 trace_f2fs_evict_inode(inode);
807 truncate_inode_pages_final(&inode->i_data);
808
809 if ((inode->i_nlink || is_bad_inode(inode)) &&
810 test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode))
811 f2fs_invalidate_compress_pages(sbi, inode->i_ino);
812
813 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
814 inode->i_ino == F2FS_META_INO(sbi) ||
815 inode->i_ino == F2FS_COMPRESS_INO(sbi))
816 goto out_clear;
817
818 f2fs_bug_on(sbi, get_dirty_pages(inode));
819 f2fs_remove_dirty_inode(inode);
820
821 f2fs_destroy_extent_tree(inode);
822
823 if (inode->i_nlink || is_bad_inode(inode))
824 goto no_delete;
825
826 err = f2fs_dquot_initialize(inode);
827 if (err) {
828 err = 0;
829 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
830 }
831
832 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
833 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
834 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
835
836 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING)) {
837 sb_start_intwrite(inode->i_sb);
838 freeze_protected = true;
839 }
840 set_inode_flag(inode, FI_NO_ALLOC);
841 i_size_write(inode, 0);
842 retry:
843 if (F2FS_HAS_BLOCKS(inode))
844 err = f2fs_truncate(inode);
845
846 if (time_to_inject(sbi, FAULT_EVICT_INODE))
847 err = -EIO;
848
849 if (!err) {
850 f2fs_lock_op(sbi);
851 err = f2fs_remove_inode_page(inode);
852 f2fs_unlock_op(sbi);
853 if (err == -ENOENT) {
854 err = 0;
855
856 /*
857 * in fuzzed image, another node may has the same
858 * block address as inode's, if it was truncated
859 * previously, truncation of inode node will fail.
860 */
861 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
862 f2fs_warn(F2FS_I_SB(inode),
863 "f2fs_evict_inode: inconsistent node id, ino:%lu",
864 inode->i_ino);
865 f2fs_inode_synced(inode);
866 set_sbi_flag(sbi, SBI_NEED_FSCK);
867 }
868 }
869 }
870
871 /* give more chances, if ENOMEM case */
872 if (err == -ENOMEM) {
873 err = 0;
874 goto retry;
875 }
876
877 if (err) {
878 f2fs_update_inode_page(inode);
879 if (dquot_initialize_needed(inode))
880 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
881 }
882 if (freeze_protected)
883 sb_end_intwrite(inode->i_sb);
884 no_delete:
885 dquot_drop(inode);
886
887 stat_dec_inline_xattr(inode);
888 stat_dec_inline_dir(inode);
889 stat_dec_inline_inode(inode);
890 stat_dec_compr_inode(inode);
891 stat_sub_compr_blocks(inode,
892 atomic_read(&fi->i_compr_blocks));
893
894 if (likely(!f2fs_cp_error(sbi) &&
895 !is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
896 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
897 else
898 f2fs_inode_synced(inode);
899
900 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */
901 if (inode->i_ino)
902 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
903 inode->i_ino);
904 if (xnid)
905 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
906 if (inode->i_nlink) {
907 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
908 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);
909 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
910 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
911 }
912 if (is_inode_flag_set(inode, FI_FREE_NID)) {
913 f2fs_alloc_nid_failed(sbi, inode->i_ino);
914 clear_inode_flag(inode, FI_FREE_NID);
915 } else {
916 /*
917 * If xattr nid is corrupted, we can reach out error condition,
918 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).
919 * In that case, f2fs_check_nid_range() is enough to give a clue.
920 */
921 }
922 out_clear:
923 fscrypt_put_encryption_info(inode);
924 fsverity_cleanup_inode(inode);
925 clear_inode(inode);
926 }
927
928 /* caller should call f2fs_lock_op() */
929 void f2fs_handle_failed_inode(struct inode *inode)
930 {
931 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
932 struct node_info ni;
933 int err;
934
935 /*
936 * clear nlink of inode in order to release resource of inode
937 * immediately.
938 */
939 clear_nlink(inode);
940
941 /*
942 * we must call this to avoid inode being remained as dirty, resulting
943 * in a panic when flushing dirty inodes in gdirty_list.
944 */
945 f2fs_update_inode_page(inode);
946 f2fs_inode_synced(inode);
947
948 /* don't make bad inode, since it becomes a regular file. */
949 unlock_new_inode(inode);
950
951 /*
952 * Note: we should add inode to orphan list before f2fs_unlock_op()
953 * so we can prevent losing this orphan when encoutering checkpoint
954 * and following suddenly power-off.
955 */
956 err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false);
957 if (err) {
958 set_sbi_flag(sbi, SBI_NEED_FSCK);
959 set_inode_flag(inode, FI_FREE_NID);
960 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix.");
961 goto out;
962 }
963
964 if (ni.blk_addr != NULL_ADDR) {
965 err = f2fs_acquire_orphan_inode(sbi);
966 if (err) {
967 set_sbi_flag(sbi, SBI_NEED_FSCK);
968 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix.");
969 } else {
970 f2fs_add_orphan_inode(inode);
971 }
972 f2fs_alloc_nid_done(sbi, inode->i_ino);
973 } else {
974 set_inode_flag(inode, FI_FREE_NID);
975 }
976
977 out:
978 f2fs_unlock_op(sbi);
979
980 /* iput will drop the inode object */
981 iput(inode);
982 }
983
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