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