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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/writeback.h>
11#include <linux/sched/mm.h>
12#include <linux/lz4.h>
13#include <linux/zstd.h>
14
15#include "f2fs.h"
16#include "node.h"
17#include "segment.h"
18#include "xattr.h"
19
20#include <trace/events/f2fs.h>
21
22#ifdef CONFIG_F2FS_FS_COMPRESSION
23extern const struct address_space_operations f2fs_compress_aops;
24#endif
25
26void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync)
27{
28 if (is_inode_flag_set(inode, FI_NEW_INODE))
29 return;
30
31 if (f2fs_readonly(F2FS_I_SB(inode)->sb))
32 return;
33
34 if (f2fs_inode_dirtied(inode, sync))
35 return;
36
37 if (f2fs_is_atomic_file(inode)) {
38 set_inode_flag(inode, FI_ATOMIC_DIRTIED);
39 return;
40 }
41
42 mark_inode_dirty_sync(inode);
43}
44
45void f2fs_set_inode_flags(struct inode *inode)
46{
47 unsigned int flags = F2FS_I(inode)->i_flags;
48 unsigned int new_fl = 0;
49
50 if (flags & F2FS_SYNC_FL)
51 new_fl |= S_SYNC;
52 if (flags & F2FS_APPEND_FL)
53 new_fl |= S_APPEND;
54 if (flags & F2FS_IMMUTABLE_FL)
55 new_fl |= S_IMMUTABLE;
56 if (flags & F2FS_NOATIME_FL)
57 new_fl |= S_NOATIME;
58 if (flags & F2FS_DIRSYNC_FL)
59 new_fl |= S_DIRSYNC;
60 if (file_is_encrypt(inode))
61 new_fl |= S_ENCRYPTED;
62 if (file_is_verity(inode))
63 new_fl |= S_VERITY;
64 if (flags & F2FS_CASEFOLD_FL)
65 new_fl |= S_CASEFOLD;
66 inode_set_flags(inode, new_fl,
67 S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|
68 S_ENCRYPTED|S_VERITY|S_CASEFOLD);
69}
70
71static void __get_inode_rdev(struct inode *inode, struct page *node_page)
72{
73 __le32 *addr = get_dnode_addr(inode, node_page);
74
75 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
76 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
77 if (addr[0])
78 inode->i_rdev = old_decode_dev(le32_to_cpu(addr[0]));
79 else
80 inode->i_rdev = new_decode_dev(le32_to_cpu(addr[1]));
81 }
82}
83
84static void __set_inode_rdev(struct inode *inode, struct page *node_page)
85{
86 __le32 *addr = get_dnode_addr(inode, node_page);
87
88 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
89 if (old_valid_dev(inode->i_rdev)) {
90 addr[0] = cpu_to_le32(old_encode_dev(inode->i_rdev));
91 addr[1] = 0;
92 } else {
93 addr[0] = 0;
94 addr[1] = cpu_to_le32(new_encode_dev(inode->i_rdev));
95 addr[2] = 0;
96 }
97 }
98}
99
100static void __recover_inline_status(struct inode *inode, struct page *ipage)
101{
102 void *inline_data = inline_data_addr(inode, ipage);
103 __le32 *start = inline_data;
104 __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);
105
106 while (start < end) {
107 if (*start++) {
108 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
109
110 set_inode_flag(inode, FI_DATA_EXIST);
111 set_raw_inline(inode, F2FS_INODE(ipage));
112 set_page_dirty(ipage);
113 return;
114 }
115 }
116 return;
117}
118
119static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
120{
121 struct f2fs_inode *ri = &F2FS_NODE(page)->i;
122
123 if (!f2fs_sb_has_inode_chksum(sbi))
124 return false;
125
126 if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR))
127 return false;
128
129 if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize),
130 i_inode_checksum))
131 return false;
132
133 return true;
134}
135
136static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
137{
138 struct f2fs_node *node = F2FS_NODE(page);
139 struct f2fs_inode *ri = &node->i;
140 __le32 ino = node->footer.ino;
141 __le32 gen = ri->i_generation;
142 __u32 chksum, chksum_seed;
143 __u32 dummy_cs = 0;
144 unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum);
145 unsigned int cs_size = sizeof(dummy_cs);
146
147 chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino,
148 sizeof(ino));
149 chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen));
150
151 chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset);
152 chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size);
153 offset += cs_size;
154 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset,
155 F2FS_BLKSIZE - offset);
156 return chksum;
157}
158
159bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)
160{
161 struct f2fs_inode *ri;
162 __u32 provided, calculated;
163
164 if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)))
165 return true;
166
167#ifdef CONFIG_F2FS_CHECK_FS
168 if (!f2fs_enable_inode_chksum(sbi, page))
169#else
170 if (!f2fs_enable_inode_chksum(sbi, page) ||
171 PageDirty(page) ||
172 folio_test_writeback(page_folio(page)))
173#endif
174 return true;
175
176 ri = &F2FS_NODE(page)->i;
177 provided = le32_to_cpu(ri->i_inode_checksum);
178 calculated = f2fs_inode_chksum(sbi, page);
179
180 if (provided != calculated)
181 f2fs_warn(sbi, "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x",
182 page_folio(page)->index, ino_of_node(page),
183 provided, calculated);
184
185 return provided == calculated;
186}
187
188void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page)
189{
190 struct f2fs_inode *ri = &F2FS_NODE(page)->i;
191
192 if (!f2fs_enable_inode_chksum(sbi, page))
193 return;
194
195 ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page));
196}
197
198static bool sanity_check_compress_inode(struct inode *inode,
199 struct f2fs_inode *ri)
200{
201 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
202 unsigned char clevel;
203
204 if (ri->i_compress_algorithm >= COMPRESS_MAX) {
205 f2fs_warn(sbi,
206 "%s: inode (ino=%lx) has unsupported compress algorithm: %u, run fsck to fix",
207 __func__, inode->i_ino, ri->i_compress_algorithm);
208 return false;
209 }
210 if (le64_to_cpu(ri->i_compr_blocks) >
211 SECTOR_TO_BLOCK(inode->i_blocks)) {
212 f2fs_warn(sbi,
213 "%s: inode (ino=%lx) has inconsistent i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix",
214 __func__, inode->i_ino, le64_to_cpu(ri->i_compr_blocks),
215 SECTOR_TO_BLOCK(inode->i_blocks));
216 return false;
217 }
218 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
219 ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) {
220 f2fs_warn(sbi,
221 "%s: inode (ino=%lx) has unsupported log cluster size: %u, run fsck to fix",
222 __func__, inode->i_ino, ri->i_log_cluster_size);
223 return false;
224 }
225
226 clevel = le16_to_cpu(ri->i_compress_flag) >>
227 COMPRESS_LEVEL_OFFSET;
228 switch (ri->i_compress_algorithm) {
229 case COMPRESS_LZO:
230#ifdef CONFIG_F2FS_FS_LZO
231 if (clevel)
232 goto err_level;
233#endif
234 break;
235 case COMPRESS_LZORLE:
236#ifdef CONFIG_F2FS_FS_LZORLE
237 if (clevel)
238 goto err_level;
239#endif
240 break;
241 case COMPRESS_LZ4:
242#ifdef CONFIG_F2FS_FS_LZ4
243#ifdef CONFIG_F2FS_FS_LZ4HC
244 if (clevel &&
245 (clevel < LZ4HC_MIN_CLEVEL || clevel > LZ4HC_MAX_CLEVEL))
246 goto err_level;
247#else
248 if (clevel)
249 goto err_level;
250#endif
251#endif
252 break;
253 case COMPRESS_ZSTD:
254#ifdef CONFIG_F2FS_FS_ZSTD
255 if (clevel < zstd_min_clevel() || clevel > zstd_max_clevel())
256 goto err_level;
257#endif
258 break;
259 default:
260 goto err_level;
261 }
262
263 return true;
264err_level:
265 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported compress level: %u, run fsck to fix",
266 __func__, inode->i_ino, clevel);
267 return false;
268}
269
270static bool sanity_check_inode(struct inode *inode, struct page *node_page)
271{
272 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
273 struct f2fs_inode_info *fi = F2FS_I(inode);
274 struct f2fs_inode *ri = F2FS_INODE(node_page);
275 unsigned long long iblocks;
276
277 iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks);
278 if (!iblocks) {
279 f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.",
280 __func__, inode->i_ino, iblocks);
281 return false;
282 }
283
284 if (ino_of_node(node_page) != nid_of_node(node_page)) {
285 f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.",
286 __func__, inode->i_ino,
287 ino_of_node(node_page), nid_of_node(node_page));
288 return false;
289 }
290
291 if (f2fs_has_extra_attr(inode)) {
292 if (!f2fs_sb_has_extra_attr(sbi)) {
293 f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off",
294 __func__, inode->i_ino);
295 return false;
296 }
297 if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE ||
298 fi->i_extra_isize < F2FS_MIN_EXTRA_ATTR_SIZE ||
299 fi->i_extra_isize % sizeof(__le32)) {
300 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu",
301 __func__, inode->i_ino, fi->i_extra_isize,
302 F2FS_TOTAL_EXTRA_ATTR_SIZE);
303 return false;
304 }
305 if (f2fs_sb_has_flexible_inline_xattr(sbi) &&
306 f2fs_has_inline_xattr(inode) &&
307 (!fi->i_inline_xattr_size ||
308 fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) {
309 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %lu",
310 __func__, inode->i_ino, fi->i_inline_xattr_size,
311 MAX_INLINE_XATTR_SIZE);
312 return false;
313 }
314 if (f2fs_sb_has_compression(sbi) &&
315 fi->i_flags & F2FS_COMPR_FL &&
316 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
317 i_compress_flag)) {
318 if (!sanity_check_compress_inode(inode, ri))
319 return false;
320 }
321 }
322
323 if (!f2fs_sb_has_extra_attr(sbi)) {
324 if (f2fs_sb_has_project_quota(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_PRJQUOTA);
327 return false;
328 }
329 if (f2fs_sb_has_inode_chksum(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_INODE_CHKSUM);
332 return false;
333 }
334 if (f2fs_sb_has_flexible_inline_xattr(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_FLEXIBLE_INLINE_XATTR);
337 return false;
338 }
339 if (f2fs_sb_has_inode_crtime(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_INODE_CRTIME);
342 return false;
343 }
344 if (f2fs_sb_has_compression(sbi)) {
345 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",
346 __func__, inode->i_ino, F2FS_FEATURE_COMPRESSION);
347 return false;
348 }
349 }
350
351 if (f2fs_sanity_check_inline_data(inode, node_page)) {
352 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix",
353 __func__, inode->i_ino, inode->i_mode);
354 return false;
355 }
356
357 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
358 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix",
359 __func__, inode->i_ino, inode->i_mode);
360 return false;
361 }
362
363 if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) {
364 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off",
365 __func__, inode->i_ino);
366 return false;
367 }
368
369 if (fi->i_xattr_nid && f2fs_check_nid_range(sbi, fi->i_xattr_nid)) {
370 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_xattr_nid: %u, run fsck to fix.",
371 __func__, inode->i_ino, fi->i_xattr_nid);
372 return false;
373 }
374
375 if (IS_DEVICE_ALIASING(inode)) {
376 if (!f2fs_sb_has_device_alias(sbi)) {
377 f2fs_warn(sbi, "%s: inode (ino=%lx) has device alias flag, but the feature is off",
378 __func__, inode->i_ino);
379 return false;
380 }
381 if (!f2fs_is_pinned_file(inode)) {
382 f2fs_warn(sbi, "%s: inode (ino=%lx) has device alias flag, but is not pinned",
383 __func__, inode->i_ino);
384 return false;
385 }
386 }
387
388 return true;
389}
390
391static void init_idisk_time(struct inode *inode)
392{
393 struct f2fs_inode_info *fi = F2FS_I(inode);
394
395 fi->i_disk_time[0] = inode_get_atime(inode);
396 fi->i_disk_time[1] = inode_get_ctime(inode);
397 fi->i_disk_time[2] = inode_get_mtime(inode);
398}
399
400static int do_read_inode(struct inode *inode)
401{
402 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
403 struct f2fs_inode_info *fi = F2FS_I(inode);
404 struct page *node_page;
405 struct f2fs_inode *ri;
406 projid_t i_projid;
407
408 /* Check if ino is within scope */
409 if (f2fs_check_nid_range(sbi, inode->i_ino))
410 return -EINVAL;
411
412 node_page = f2fs_get_node_page(sbi, inode->i_ino);
413 if (IS_ERR(node_page))
414 return PTR_ERR(node_page);
415
416 ri = F2FS_INODE(node_page);
417
418 inode->i_mode = le16_to_cpu(ri->i_mode);
419 i_uid_write(inode, le32_to_cpu(ri->i_uid));
420 i_gid_write(inode, le32_to_cpu(ri->i_gid));
421 set_nlink(inode, le32_to_cpu(ri->i_links));
422 inode->i_size = le64_to_cpu(ri->i_size);
423 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
424
425 inode_set_atime(inode, le64_to_cpu(ri->i_atime),
426 le32_to_cpu(ri->i_atime_nsec));
427 inode_set_ctime(inode, le64_to_cpu(ri->i_ctime),
428 le32_to_cpu(ri->i_ctime_nsec));
429 inode_set_mtime(inode, le64_to_cpu(ri->i_mtime),
430 le32_to_cpu(ri->i_mtime_nsec));
431 inode->i_generation = le32_to_cpu(ri->i_generation);
432 if (S_ISDIR(inode->i_mode))
433 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
434 else if (S_ISREG(inode->i_mode))
435 fi->i_gc_failures = le16_to_cpu(ri->i_gc_failures);
436 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
437 fi->i_flags = le32_to_cpu(ri->i_flags);
438 if (S_ISREG(inode->i_mode))
439 fi->i_flags &= ~F2FS_PROJINHERIT_FL;
440 bitmap_zero(fi->flags, FI_MAX);
441 fi->i_advise = ri->i_advise;
442 fi->i_pino = le32_to_cpu(ri->i_pino);
443 fi->i_dir_level = ri->i_dir_level;
444
445 get_inline_info(inode, ri);
446
447 fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
448 le16_to_cpu(ri->i_extra_isize) : 0;
449
450 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
451 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
452 } else if (f2fs_has_inline_xattr(inode) ||
453 f2fs_has_inline_dentry(inode)) {
454 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
455 } else {
456
457 /*
458 * Previous inline data or directory always reserved 200 bytes
459 * in inode layout, even if inline_xattr is disabled. In order
460 * to keep inline_dentry's structure for backward compatibility,
461 * we get the space back only from inline_data.
462 */
463 fi->i_inline_xattr_size = 0;
464 }
465
466 if (!sanity_check_inode(inode, node_page)) {
467 f2fs_put_page(node_page, 1);
468 set_sbi_flag(sbi, SBI_NEED_FSCK);
469 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
470 return -EFSCORRUPTED;
471 }
472
473 /* check data exist */
474 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
475 __recover_inline_status(inode, node_page);
476
477 /* try to recover cold bit for non-dir inode */
478 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) {
479 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
480 set_cold_node(node_page, false);
481 set_page_dirty(node_page);
482 }
483
484 /* get rdev by using inline_info */
485 __get_inode_rdev(inode, node_page);
486
487 if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
488 fi->last_disk_size = inode->i_size;
489
490 if (fi->i_flags & F2FS_PROJINHERIT_FL)
491 set_inode_flag(inode, FI_PROJ_INHERIT);
492
493 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) &&
494 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
495 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
496 else
497 i_projid = F2FS_DEF_PROJID;
498 fi->i_projid = make_kprojid(&init_user_ns, i_projid);
499
500 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) &&
501 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
502 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
503 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
504 }
505
506 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
507 (fi->i_flags & F2FS_COMPR_FL)) {
508 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
509 i_compress_flag)) {
510 unsigned short compress_flag;
511
512 atomic_set(&fi->i_compr_blocks,
513 le64_to_cpu(ri->i_compr_blocks));
514 fi->i_compress_algorithm = ri->i_compress_algorithm;
515 fi->i_log_cluster_size = ri->i_log_cluster_size;
516 compress_flag = le16_to_cpu(ri->i_compress_flag);
517 fi->i_compress_level = compress_flag >>
518 COMPRESS_LEVEL_OFFSET;
519 fi->i_compress_flag = compress_flag &
520 GENMASK(COMPRESS_LEVEL_OFFSET - 1, 0);
521 fi->i_cluster_size = BIT(fi->i_log_cluster_size);
522 set_inode_flag(inode, FI_COMPRESSED_FILE);
523 }
524 }
525
526 init_idisk_time(inode);
527
528 if (!sanity_check_extent_cache(inode, node_page)) {
529 f2fs_put_page(node_page, 1);
530 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
531 return -EFSCORRUPTED;
532 }
533
534 /* Need all the flag bits */
535 f2fs_init_read_extent_tree(inode, node_page);
536 f2fs_init_age_extent_tree(inode);
537
538 f2fs_put_page(node_page, 1);
539
540 stat_inc_inline_xattr(inode);
541 stat_inc_inline_inode(inode);
542 stat_inc_inline_dir(inode);
543 stat_inc_compr_inode(inode);
544 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks));
545
546 return 0;
547}
548
549static bool is_meta_ino(struct f2fs_sb_info *sbi, unsigned int ino)
550{
551 return ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi) ||
552 ino == F2FS_COMPRESS_INO(sbi);
553}
554
555struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
556{
557 struct f2fs_sb_info *sbi = F2FS_SB(sb);
558 struct inode *inode;
559 int ret = 0;
560
561 inode = iget_locked(sb, ino);
562 if (!inode)
563 return ERR_PTR(-ENOMEM);
564
565 if (!(inode->i_state & I_NEW)) {
566 if (is_meta_ino(sbi, ino)) {
567 f2fs_err(sbi, "inaccessible inode: %lu, run fsck to repair", ino);
568 set_sbi_flag(sbi, SBI_NEED_FSCK);
569 ret = -EFSCORRUPTED;
570 trace_f2fs_iget_exit(inode, ret);
571 iput(inode);
572 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
573 return ERR_PTR(ret);
574 }
575
576 trace_f2fs_iget(inode);
577 return inode;
578 }
579
580 if (is_meta_ino(sbi, ino))
581 goto make_now;
582
583 ret = do_read_inode(inode);
584 if (ret)
585 goto bad_inode;
586make_now:
587 if (ino == F2FS_NODE_INO(sbi)) {
588 inode->i_mapping->a_ops = &f2fs_node_aops;
589 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
590 } else if (ino == F2FS_META_INO(sbi)) {
591 inode->i_mapping->a_ops = &f2fs_meta_aops;
592 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
593 } else if (ino == F2FS_COMPRESS_INO(sbi)) {
594#ifdef CONFIG_F2FS_FS_COMPRESSION
595 inode->i_mapping->a_ops = &f2fs_compress_aops;
596 /*
597 * generic_error_remove_folio only truncates pages of regular
598 * inode
599 */
600 inode->i_mode |= S_IFREG;
601#endif
602 mapping_set_gfp_mask(inode->i_mapping,
603 GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE);
604 } else if (S_ISREG(inode->i_mode)) {
605 inode->i_op = &f2fs_file_inode_operations;
606 inode->i_fop = &f2fs_file_operations;
607 inode->i_mapping->a_ops = &f2fs_dblock_aops;
608 } else if (S_ISDIR(inode->i_mode)) {
609 inode->i_op = &f2fs_dir_inode_operations;
610 inode->i_fop = &f2fs_dir_operations;
611 inode->i_mapping->a_ops = &f2fs_dblock_aops;
612 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
613 } else if (S_ISLNK(inode->i_mode)) {
614 if (file_is_encrypt(inode))
615 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
616 else
617 inode->i_op = &f2fs_symlink_inode_operations;
618 inode_nohighmem(inode);
619 inode->i_mapping->a_ops = &f2fs_dblock_aops;
620 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
621 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
622 inode->i_op = &f2fs_special_inode_operations;
623 init_special_inode(inode, inode->i_mode, inode->i_rdev);
624 } else {
625 ret = -EIO;
626 goto bad_inode;
627 }
628 f2fs_set_inode_flags(inode);
629
630 unlock_new_inode(inode);
631 trace_f2fs_iget(inode);
632 return inode;
633
634bad_inode:
635 f2fs_inode_synced(inode);
636 iget_failed(inode);
637 trace_f2fs_iget_exit(inode, ret);
638 return ERR_PTR(ret);
639}
640
641struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
642{
643 struct inode *inode;
644retry:
645 inode = f2fs_iget(sb, ino);
646 if (IS_ERR(inode)) {
647 if (PTR_ERR(inode) == -ENOMEM) {
648 memalloc_retry_wait(GFP_NOFS);
649 goto retry;
650 }
651 }
652 return inode;
653}
654
655void f2fs_update_inode(struct inode *inode, struct page *node_page)
656{
657 struct f2fs_inode_info *fi = F2FS_I(inode);
658 struct f2fs_inode *ri;
659 struct extent_tree *et = fi->extent_tree[EX_READ];
660
661 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
662 set_page_dirty(node_page);
663
664 f2fs_inode_synced(inode);
665
666 ri = F2FS_INODE(node_page);
667
668 ri->i_mode = cpu_to_le16(inode->i_mode);
669 ri->i_advise = fi->i_advise;
670 ri->i_uid = cpu_to_le32(i_uid_read(inode));
671 ri->i_gid = cpu_to_le32(i_gid_read(inode));
672 ri->i_links = cpu_to_le32(inode->i_nlink);
673 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
674
675 if (!f2fs_is_atomic_file(inode) ||
676 is_inode_flag_set(inode, FI_ATOMIC_COMMITTED))
677 ri->i_size = cpu_to_le64(i_size_read(inode));
678
679 if (et) {
680 read_lock(&et->lock);
681 set_raw_read_extent(&et->largest, &ri->i_ext);
682 read_unlock(&et->lock);
683 } else {
684 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
685 }
686 set_raw_inline(inode, ri);
687
688 ri->i_atime = cpu_to_le64(inode_get_atime_sec(inode));
689 ri->i_ctime = cpu_to_le64(inode_get_ctime_sec(inode));
690 ri->i_mtime = cpu_to_le64(inode_get_mtime_sec(inode));
691 ri->i_atime_nsec = cpu_to_le32(inode_get_atime_nsec(inode));
692 ri->i_ctime_nsec = cpu_to_le32(inode_get_ctime_nsec(inode));
693 ri->i_mtime_nsec = cpu_to_le32(inode_get_mtime_nsec(inode));
694 if (S_ISDIR(inode->i_mode))
695 ri->i_current_depth = cpu_to_le32(fi->i_current_depth);
696 else if (S_ISREG(inode->i_mode))
697 ri->i_gc_failures = cpu_to_le16(fi->i_gc_failures);
698 ri->i_xattr_nid = cpu_to_le32(fi->i_xattr_nid);
699 ri->i_flags = cpu_to_le32(fi->i_flags);
700 ri->i_pino = cpu_to_le32(fi->i_pino);
701 ri->i_generation = cpu_to_le32(inode->i_generation);
702 ri->i_dir_level = fi->i_dir_level;
703
704 if (f2fs_has_extra_attr(inode)) {
705 ri->i_extra_isize = cpu_to_le16(fi->i_extra_isize);
706
707 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)))
708 ri->i_inline_xattr_size =
709 cpu_to_le16(fi->i_inline_xattr_size);
710
711 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) &&
712 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid)) {
713 projid_t i_projid;
714
715 i_projid = from_kprojid(&init_user_ns, fi->i_projid);
716 ri->i_projid = cpu_to_le32(i_projid);
717 }
718
719 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
720 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
721 ri->i_crtime = cpu_to_le64(fi->i_crtime.tv_sec);
722 ri->i_crtime_nsec = cpu_to_le32(fi->i_crtime.tv_nsec);
723 }
724
725 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) &&
726 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
727 i_compress_flag)) {
728 unsigned short compress_flag;
729
730 ri->i_compr_blocks = cpu_to_le64(
731 atomic_read(&fi->i_compr_blocks));
732 ri->i_compress_algorithm = fi->i_compress_algorithm;
733 compress_flag = fi->i_compress_flag |
734 fi->i_compress_level <<
735 COMPRESS_LEVEL_OFFSET;
736 ri->i_compress_flag = cpu_to_le16(compress_flag);
737 ri->i_log_cluster_size = fi->i_log_cluster_size;
738 }
739 }
740
741 __set_inode_rdev(inode, node_page);
742
743 /* deleted inode */
744 if (inode->i_nlink == 0)
745 clear_page_private_inline(node_page);
746
747 init_idisk_time(inode);
748#ifdef CONFIG_F2FS_CHECK_FS
749 f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);
750#endif
751}
752
753void f2fs_update_inode_page(struct inode *inode)
754{
755 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
756 struct page *node_page;
757 int count = 0;
758retry:
759 node_page = f2fs_get_node_page(sbi, inode->i_ino);
760 if (IS_ERR(node_page)) {
761 int err = PTR_ERR(node_page);
762
763 /* The node block was truncated. */
764 if (err == -ENOENT)
765 return;
766
767 if (err == -ENOMEM || ++count <= DEFAULT_RETRY_IO_COUNT)
768 goto retry;
769 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_UPDATE_INODE);
770 return;
771 }
772 f2fs_update_inode(inode, node_page);
773 f2fs_put_page(node_page, 1);
774}
775
776int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
777{
778 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
779
780 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
781 inode->i_ino == F2FS_META_INO(sbi))
782 return 0;
783
784 /*
785 * atime could be updated without dirtying f2fs inode in lazytime mode
786 */
787 if (f2fs_is_time_consistent(inode) &&
788 !is_inode_flag_set(inode, FI_DIRTY_INODE))
789 return 0;
790
791 if (!f2fs_is_checkpoint_ready(sbi)) {
792 f2fs_mark_inode_dirty_sync(inode, true);
793 return -ENOSPC;
794 }
795
796 /*
797 * We need to balance fs here to prevent from producing dirty node pages
798 * during the urgent cleaning time when running out of free sections.
799 */
800 f2fs_update_inode_page(inode);
801 if (wbc && wbc->nr_to_write)
802 f2fs_balance_fs(sbi, true);
803 return 0;
804}
805
806/*
807 * Called at the last iput() if i_nlink is zero
808 */
809void f2fs_evict_inode(struct inode *inode)
810{
811 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
812 struct f2fs_inode_info *fi = F2FS_I(inode);
813 nid_t xnid = fi->i_xattr_nid;
814 int err = 0;
815 bool freeze_protected = false;
816
817 f2fs_abort_atomic_write(inode, true);
818
819 if (fi->cow_inode && f2fs_is_cow_file(fi->cow_inode)) {
820 clear_inode_flag(fi->cow_inode, FI_COW_FILE);
821 F2FS_I(fi->cow_inode)->atomic_inode = NULL;
822 iput(fi->cow_inode);
823 fi->cow_inode = NULL;
824 }
825
826 trace_f2fs_evict_inode(inode);
827 truncate_inode_pages_final(&inode->i_data);
828
829 if ((inode->i_nlink || is_bad_inode(inode)) &&
830 test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode))
831 f2fs_invalidate_compress_pages(sbi, inode->i_ino);
832
833 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
834 inode->i_ino == F2FS_META_INO(sbi) ||
835 inode->i_ino == F2FS_COMPRESS_INO(sbi))
836 goto out_clear;
837
838 f2fs_bug_on(sbi, get_dirty_pages(inode));
839 f2fs_remove_dirty_inode(inode);
840
841 if (!IS_DEVICE_ALIASING(inode))
842 f2fs_destroy_extent_tree(inode);
843
844 if (inode->i_nlink || is_bad_inode(inode))
845 goto no_delete;
846
847 err = f2fs_dquot_initialize(inode);
848 if (err) {
849 err = 0;
850 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
851 }
852
853 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
854 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
855 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
856
857 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING)) {
858 sb_start_intwrite(inode->i_sb);
859 freeze_protected = true;
860 }
861 set_inode_flag(inode, FI_NO_ALLOC);
862 i_size_write(inode, 0);
863retry:
864 if (F2FS_HAS_BLOCKS(inode))
865 err = f2fs_truncate(inode);
866
867 if (time_to_inject(sbi, FAULT_EVICT_INODE))
868 err = -EIO;
869
870 if (!err) {
871 f2fs_lock_op(sbi);
872 err = f2fs_remove_inode_page(inode);
873 f2fs_unlock_op(sbi);
874 if (err == -ENOENT) {
875 err = 0;
876
877 /*
878 * in fuzzed image, another node may has the same
879 * block address as inode's, if it was truncated
880 * previously, truncation of inode node will fail.
881 */
882 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
883 f2fs_warn(F2FS_I_SB(inode),
884 "f2fs_evict_inode: inconsistent node id, ino:%lu",
885 inode->i_ino);
886 f2fs_inode_synced(inode);
887 set_sbi_flag(sbi, SBI_NEED_FSCK);
888 }
889 }
890 }
891
892 /* give more chances, if ENOMEM case */
893 if (err == -ENOMEM) {
894 err = 0;
895 goto retry;
896 }
897
898 if (IS_DEVICE_ALIASING(inode))
899 f2fs_destroy_extent_tree(inode);
900
901 if (err) {
902 f2fs_update_inode_page(inode);
903 if (dquot_initialize_needed(inode))
904 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
905 }
906 if (freeze_protected)
907 sb_end_intwrite(inode->i_sb);
908no_delete:
909 dquot_drop(inode);
910
911 stat_dec_inline_xattr(inode);
912 stat_dec_inline_dir(inode);
913 stat_dec_inline_inode(inode);
914 stat_dec_compr_inode(inode);
915 stat_sub_compr_blocks(inode,
916 atomic_read(&fi->i_compr_blocks));
917
918 if (likely(!f2fs_cp_error(sbi) &&
919 !is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
920 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
921 else
922 f2fs_inode_synced(inode);
923
924 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */
925 if (inode->i_ino)
926 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
927 inode->i_ino);
928 if (xnid)
929 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
930 if (inode->i_nlink) {
931 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
932 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);
933 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
934 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
935 }
936 if (is_inode_flag_set(inode, FI_FREE_NID)) {
937 f2fs_alloc_nid_failed(sbi, inode->i_ino);
938 clear_inode_flag(inode, FI_FREE_NID);
939 } else {
940 /*
941 * If xattr nid is corrupted, we can reach out error condition,
942 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).
943 * In that case, f2fs_check_nid_range() is enough to give a clue.
944 */
945 }
946out_clear:
947 fscrypt_put_encryption_info(inode);
948 fsverity_cleanup_inode(inode);
949 clear_inode(inode);
950}
951
952/* caller should call f2fs_lock_op() */
953void f2fs_handle_failed_inode(struct inode *inode)
954{
955 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
956 struct node_info ni;
957 int err;
958
959 /*
960 * clear nlink of inode in order to release resource of inode
961 * immediately.
962 */
963 clear_nlink(inode);
964
965 /*
966 * we must call this to avoid inode being remained as dirty, resulting
967 * in a panic when flushing dirty inodes in gdirty_list.
968 */
969 f2fs_update_inode_page(inode);
970 f2fs_inode_synced(inode);
971
972 /* don't make bad inode, since it becomes a regular file. */
973 unlock_new_inode(inode);
974
975 /*
976 * Note: we should add inode to orphan list before f2fs_unlock_op()
977 * so we can prevent losing this orphan when encoutering checkpoint
978 * and following suddenly power-off.
979 */
980 err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false);
981 if (err) {
982 set_sbi_flag(sbi, SBI_NEED_FSCK);
983 set_inode_flag(inode, FI_FREE_NID);
984 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix.");
985 goto out;
986 }
987
988 if (ni.blk_addr != NULL_ADDR) {
989 err = f2fs_acquire_orphan_inode(sbi);
990 if (err) {
991 set_sbi_flag(sbi, SBI_NEED_FSCK);
992 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix.");
993 } else {
994 f2fs_add_orphan_inode(inode);
995 }
996 f2fs_alloc_nid_done(sbi, inode->i_ino);
997 } else {
998 set_inode_flag(inode, FI_FREE_NID);
999 }
1000
1001out:
1002 f2fs_unlock_op(sbi);
1003
1004 /* iput will drop the inode object */
1005 iput(inode);
1006}