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_readonly(F2FS_I_SB(inode)->sb))
33 return;
34
35 if (f2fs_inode_dirtied(inode, sync))
36 return;
37
38 if (f2fs_is_atomic_file(inode)) {
39 set_inode_flag(inode, FI_ATOMIC_DIRTIED);
40 return;
41 }
42
43 mark_inode_dirty_sync(inode);
44 }
45
f2fs_set_inode_flags(struct inode * inode)46 void f2fs_set_inode_flags(struct inode *inode)
47 {
48 unsigned int flags = F2FS_I(inode)->i_flags;
49 unsigned int new_fl = 0;
50
51 if (flags & F2FS_SYNC_FL)
52 new_fl |= S_SYNC;
53 if (flags & F2FS_APPEND_FL)
54 new_fl |= S_APPEND;
55 if (flags & F2FS_IMMUTABLE_FL)
56 new_fl |= S_IMMUTABLE;
57 if (flags & F2FS_NOATIME_FL)
58 new_fl |= S_NOATIME;
59 if (flags & F2FS_DIRSYNC_FL)
60 new_fl |= S_DIRSYNC;
61 if (file_is_encrypt(inode))
62 new_fl |= S_ENCRYPTED;
63 if (file_is_verity(inode))
64 new_fl |= S_VERITY;
65 if (flags & F2FS_CASEFOLD_FL)
66 new_fl |= S_CASEFOLD;
67 inode_set_flags(inode, new_fl,
68 S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|
69 S_ENCRYPTED|S_VERITY|S_CASEFOLD);
70 }
71
__get_inode_rdev(struct inode * inode,struct page * node_page)72 static void __get_inode_rdev(struct inode *inode, struct page *node_page)
73 {
74 __le32 *addr = get_dnode_addr(inode, node_page);
75
76 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
77 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
78 if (addr[0])
79 inode->i_rdev = old_decode_dev(le32_to_cpu(addr[0]));
80 else
81 inode->i_rdev = new_decode_dev(le32_to_cpu(addr[1]));
82 }
83 }
84
__set_inode_rdev(struct inode * inode,struct page * node_page)85 static void __set_inode_rdev(struct inode *inode, struct page *node_page)
86 {
87 __le32 *addr = get_dnode_addr(inode, node_page);
88
89 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
90 if (old_valid_dev(inode->i_rdev)) {
91 addr[0] = cpu_to_le32(old_encode_dev(inode->i_rdev));
92 addr[1] = 0;
93 } else {
94 addr[0] = 0;
95 addr[1] = cpu_to_le32(new_encode_dev(inode->i_rdev));
96 addr[2] = 0;
97 }
98 }
99 }
100
__recover_inline_status(struct inode * inode,struct page * ipage)101 static void __recover_inline_status(struct inode *inode, struct page *ipage)
102 {
103 void *inline_data = inline_data_addr(inode, ipage);
104 __le32 *start = inline_data;
105 __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);
106
107 while (start < end) {
108 if (*start++) {
109 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
110
111 set_inode_flag(inode, FI_DATA_EXIST);
112 set_raw_inline(inode, F2FS_INODE(ipage));
113 set_page_dirty(ipage);
114 return;
115 }
116 }
117 return;
118 }
119
f2fs_enable_inode_chksum(struct f2fs_sb_info * sbi,struct page * page)120 static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
121 {
122 struct f2fs_inode *ri = &F2FS_NODE(page)->i;
123
124 if (!f2fs_sb_has_inode_chksum(sbi))
125 return false;
126
127 if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR))
128 return false;
129
130 if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize),
131 i_inode_checksum))
132 return false;
133
134 return true;
135 }
136
f2fs_inode_chksum(struct f2fs_sb_info * sbi,struct page * page)137 static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
138 {
139 struct f2fs_node *node = F2FS_NODE(page);
140 struct f2fs_inode *ri = &node->i;
141 __le32 ino = node->footer.ino;
142 __le32 gen = ri->i_generation;
143 __u32 chksum, chksum_seed;
144 __u32 dummy_cs = 0;
145 unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum);
146 unsigned int cs_size = sizeof(dummy_cs);
147
148 chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino,
149 sizeof(ino));
150 chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen));
151
152 chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset);
153 chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size);
154 offset += cs_size;
155 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset,
156 F2FS_BLKSIZE - offset);
157 return chksum;
158 }
159
f2fs_inode_chksum_verify(struct f2fs_sb_info * sbi,struct page * page)160 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)
161 {
162 struct f2fs_inode *ri;
163 __u32 provided, calculated;
164
165 if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)))
166 return true;
167
168 #ifdef CONFIG_F2FS_CHECK_FS
169 if (!f2fs_enable_inode_chksum(sbi, page))
170 #else
171 if (!f2fs_enable_inode_chksum(sbi, page) ||
172 PageDirty(page) || PageWriteback(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->index, ino_of_node(page), provided, calculated);
183
184 return provided == calculated;
185 }
186
f2fs_inode_chksum_set(struct f2fs_sb_info * sbi,struct page * page)187 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page)
188 {
189 struct f2fs_inode *ri = &F2FS_NODE(page)->i;
190
191 if (!f2fs_enable_inode_chksum(sbi, page))
192 return;
193
194 ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page));
195 }
196
sanity_check_compress_inode(struct inode * inode,struct f2fs_inode * ri)197 static bool sanity_check_compress_inode(struct inode *inode,
198 struct f2fs_inode *ri)
199 {
200 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
201 unsigned char clevel;
202
203 if (ri->i_compress_algorithm >= COMPRESS_MAX) {
204 f2fs_warn(sbi,
205 "%s: inode (ino=%lx) has unsupported compress algorithm: %u, run fsck to fix",
206 __func__, inode->i_ino, ri->i_compress_algorithm);
207 return false;
208 }
209 if (le64_to_cpu(ri->i_compr_blocks) >
210 SECTOR_TO_BLOCK(inode->i_blocks)) {
211 f2fs_warn(sbi,
212 "%s: inode (ino=%lx) has inconsistent i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix",
213 __func__, inode->i_ino, le64_to_cpu(ri->i_compr_blocks),
214 SECTOR_TO_BLOCK(inode->i_blocks));
215 return false;
216 }
217 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
218 ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) {
219 f2fs_warn(sbi,
220 "%s: inode (ino=%lx) has unsupported log cluster size: %u, run fsck to fix",
221 __func__, inode->i_ino, ri->i_log_cluster_size);
222 return false;
223 }
224
225 clevel = le16_to_cpu(ri->i_compress_flag) >>
226 COMPRESS_LEVEL_OFFSET;
227 switch (ri->i_compress_algorithm) {
228 case COMPRESS_LZO:
229 #ifdef CONFIG_F2FS_FS_LZO
230 if (clevel)
231 goto err_level;
232 #endif
233 break;
234 case COMPRESS_LZORLE:
235 #ifdef CONFIG_F2FS_FS_LZORLE
236 if (clevel)
237 goto err_level;
238 #endif
239 break;
240 case COMPRESS_LZ4:
241 #ifdef CONFIG_F2FS_FS_LZ4
242 #ifdef CONFIG_F2FS_FS_LZ4HC
243 if (clevel &&
244 (clevel < LZ4HC_MIN_CLEVEL || clevel > LZ4HC_MAX_CLEVEL))
245 goto err_level;
246 #else
247 if (clevel)
248 goto err_level;
249 #endif
250 #endif
251 break;
252 case COMPRESS_ZSTD:
253 #ifdef CONFIG_F2FS_FS_ZSTD
254 if (clevel < zstd_min_clevel() || clevel > zstd_max_clevel())
255 goto err_level;
256 #endif
257 break;
258 default:
259 goto err_level;
260 }
261
262 return true;
263 err_level:
264 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported compress level: %u, run fsck to fix",
265 __func__, inode->i_ino, clevel);
266 return false;
267 }
268
sanity_check_inode(struct inode * inode,struct page * node_page)269 static bool sanity_check_inode(struct inode *inode, struct page *node_page)
270 {
271 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
272 struct f2fs_inode_info *fi = F2FS_I(inode);
273 struct f2fs_inode *ri = F2FS_INODE(node_page);
274 unsigned long long iblocks;
275
276 iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks);
277 if (!iblocks) {
278 f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.",
279 __func__, inode->i_ino, iblocks);
280 return false;
281 }
282
283 if (ino_of_node(node_page) != nid_of_node(node_page)) {
284 f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.",
285 __func__, inode->i_ino,
286 ino_of_node(node_page), nid_of_node(node_page));
287 return false;
288 }
289
290 if (f2fs_has_extra_attr(inode)) {
291 if (!f2fs_sb_has_extra_attr(sbi)) {
292 f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off",
293 __func__, inode->i_ino);
294 return false;
295 }
296 if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE ||
297 fi->i_extra_isize < F2FS_MIN_EXTRA_ATTR_SIZE ||
298 fi->i_extra_isize % sizeof(__le32)) {
299 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu",
300 __func__, inode->i_ino, fi->i_extra_isize,
301 F2FS_TOTAL_EXTRA_ATTR_SIZE);
302 return false;
303 }
304 if (f2fs_sb_has_flexible_inline_xattr(sbi) &&
305 f2fs_has_inline_xattr(inode) &&
306 (!fi->i_inline_xattr_size ||
307 fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) {
308 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %zu",
309 __func__, inode->i_ino, fi->i_inline_xattr_size,
310 MAX_INLINE_XATTR_SIZE);
311 return false;
312 }
313 if (f2fs_sb_has_compression(sbi) &&
314 fi->i_flags & F2FS_COMPR_FL &&
315 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
316 i_compress_flag)) {
317 if (!sanity_check_compress_inode(inode, ri))
318 return false;
319 }
320 } else if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
321 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, run fsck to fix.",
322 __func__, inode->i_ino);
323 return false;
324 }
325
326 if (!f2fs_sb_has_extra_attr(sbi)) {
327 if (f2fs_sb_has_project_quota(sbi)) {
328 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",
329 __func__, inode->i_ino, F2FS_FEATURE_PRJQUOTA);
330 return false;
331 }
332 if (f2fs_sb_has_inode_chksum(sbi)) {
333 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",
334 __func__, inode->i_ino, F2FS_FEATURE_INODE_CHKSUM);
335 return false;
336 }
337 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
338 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",
339 __func__, inode->i_ino, F2FS_FEATURE_FLEXIBLE_INLINE_XATTR);
340 return false;
341 }
342 if (f2fs_sb_has_inode_crtime(sbi)) {
343 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",
344 __func__, inode->i_ino, F2FS_FEATURE_INODE_CRTIME);
345 return false;
346 }
347 if (f2fs_sb_has_compression(sbi)) {
348 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",
349 __func__, inode->i_ino, F2FS_FEATURE_COMPRESSION);
350 return false;
351 }
352 }
353
354 if (f2fs_sanity_check_inline_data(inode, node_page)) {
355 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix",
356 __func__, inode->i_ino, inode->i_mode);
357 return false;
358 }
359
360 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
361 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix",
362 __func__, inode->i_ino, inode->i_mode);
363 return false;
364 }
365
366 if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) {
367 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off",
368 __func__, inode->i_ino);
369 return false;
370 }
371
372 if (fi->i_xattr_nid && f2fs_check_nid_range(sbi, fi->i_xattr_nid)) {
373 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_xattr_nid: %u, run fsck to fix.",
374 __func__, inode->i_ino, fi->i_xattr_nid);
375 return false;
376 }
377
378 return true;
379 }
380
init_idisk_time(struct inode * inode)381 static void init_idisk_time(struct inode *inode)
382 {
383 struct f2fs_inode_info *fi = F2FS_I(inode);
384
385 fi->i_disk_time[0] = inode->i_atime;
386 fi->i_disk_time[1] = inode_get_ctime(inode);
387 fi->i_disk_time[2] = inode->i_mtime;
388 }
389
do_read_inode(struct inode * inode)390 static int do_read_inode(struct inode *inode)
391 {
392 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
393 struct f2fs_inode_info *fi = F2FS_I(inode);
394 struct page *node_page;
395 struct f2fs_inode *ri;
396 projid_t i_projid;
397
398 /* Check if ino is within scope */
399 if (f2fs_check_nid_range(sbi, inode->i_ino))
400 return -EINVAL;
401
402 node_page = f2fs_get_node_page(sbi, inode->i_ino);
403 if (IS_ERR(node_page))
404 return PTR_ERR(node_page);
405
406 ri = F2FS_INODE(node_page);
407
408 inode->i_mode = le16_to_cpu(ri->i_mode);
409 i_uid_write(inode, le32_to_cpu(ri->i_uid));
410 i_gid_write(inode, le32_to_cpu(ri->i_gid));
411 set_nlink(inode, le32_to_cpu(ri->i_links));
412 inode->i_size = le64_to_cpu(ri->i_size);
413 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
414
415 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
416 inode_set_ctime(inode, le64_to_cpu(ri->i_ctime),
417 le32_to_cpu(ri->i_ctime_nsec));
418 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
419 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
420 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
421 inode->i_generation = le32_to_cpu(ri->i_generation);
422 if (S_ISDIR(inode->i_mode))
423 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
424 else if (S_ISREG(inode->i_mode))
425 fi->i_gc_failures[GC_FAILURE_PIN] =
426 le16_to_cpu(ri->i_gc_failures);
427 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
428 fi->i_flags = le32_to_cpu(ri->i_flags);
429 if (S_ISREG(inode->i_mode))
430 fi->i_flags &= ~F2FS_PROJINHERIT_FL;
431 bitmap_zero(fi->flags, FI_MAX);
432 fi->i_advise = ri->i_advise;
433 fi->i_pino = le32_to_cpu(ri->i_pino);
434 fi->i_dir_level = ri->i_dir_level;
435
436 get_inline_info(inode, ri);
437
438 fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
439 le16_to_cpu(ri->i_extra_isize) : 0;
440
441 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
442 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
443 } else if (f2fs_has_inline_xattr(inode) ||
444 f2fs_has_inline_dentry(inode)) {
445 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
446 } else {
447
448 /*
449 * Previous inline data or directory always reserved 200 bytes
450 * in inode layout, even if inline_xattr is disabled. In order
451 * to keep inline_dentry's structure for backward compatibility,
452 * we get the space back only from inline_data.
453 */
454 fi->i_inline_xattr_size = 0;
455 }
456
457 if (!sanity_check_inode(inode, node_page)) {
458 f2fs_put_page(node_page, 1);
459 set_sbi_flag(sbi, SBI_NEED_FSCK);
460 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
461 return -EFSCORRUPTED;
462 }
463
464 /* check data exist */
465 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
466 __recover_inline_status(inode, node_page);
467
468 /* try to recover cold bit for non-dir inode */
469 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) {
470 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
471 set_cold_node(node_page, false);
472 set_page_dirty(node_page);
473 }
474
475 /* get rdev by using inline_info */
476 __get_inode_rdev(inode, node_page);
477
478 if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
479 fi->last_disk_size = inode->i_size;
480
481 if (fi->i_flags & F2FS_PROJINHERIT_FL)
482 set_inode_flag(inode, FI_PROJ_INHERIT);
483
484 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) &&
485 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
486 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
487 else
488 i_projid = F2FS_DEF_PROJID;
489 fi->i_projid = make_kprojid(&init_user_ns, i_projid);
490
491 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) &&
492 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
493 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
494 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
495 }
496
497 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
498 (fi->i_flags & F2FS_COMPR_FL)) {
499 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
500 i_compress_flag)) {
501 unsigned short compress_flag;
502
503 atomic_set(&fi->i_compr_blocks,
504 le64_to_cpu(ri->i_compr_blocks));
505 fi->i_compress_algorithm = ri->i_compress_algorithm;
506 fi->i_log_cluster_size = ri->i_log_cluster_size;
507 compress_flag = le16_to_cpu(ri->i_compress_flag);
508 fi->i_compress_level = compress_flag >>
509 COMPRESS_LEVEL_OFFSET;
510 fi->i_compress_flag = compress_flag &
511 GENMASK(COMPRESS_LEVEL_OFFSET - 1, 0);
512 fi->i_cluster_size = BIT(fi->i_log_cluster_size);
513 set_inode_flag(inode, FI_COMPRESSED_FILE);
514 }
515 }
516
517 init_idisk_time(inode);
518
519 if (!sanity_check_extent_cache(inode, node_page)) {
520 f2fs_put_page(node_page, 1);
521 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
522 return -EFSCORRUPTED;
523 }
524
525 /* Need all the flag bits */
526 f2fs_init_read_extent_tree(inode, node_page);
527 f2fs_init_age_extent_tree(inode);
528
529 f2fs_put_page(node_page, 1);
530
531 stat_inc_inline_xattr(inode);
532 stat_inc_inline_inode(inode);
533 stat_inc_inline_dir(inode);
534 stat_inc_compr_inode(inode);
535 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks));
536
537 return 0;
538 }
539
is_meta_ino(struct f2fs_sb_info * sbi,unsigned int ino)540 static bool is_meta_ino(struct f2fs_sb_info *sbi, unsigned int ino)
541 {
542 return ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi) ||
543 ino == F2FS_COMPRESS_INO(sbi);
544 }
545
f2fs_iget(struct super_block * sb,unsigned long ino)546 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
547 {
548 struct f2fs_sb_info *sbi = F2FS_SB(sb);
549 struct inode *inode;
550 int ret = 0;
551
552 inode = iget_locked(sb, ino);
553 if (!inode)
554 return ERR_PTR(-ENOMEM);
555
556 if (!(inode->i_state & I_NEW)) {
557 if (is_meta_ino(sbi, ino)) {
558 f2fs_err(sbi, "inaccessible inode: %lu, run fsck to repair", ino);
559 set_sbi_flag(sbi, SBI_NEED_FSCK);
560 ret = -EFSCORRUPTED;
561 trace_f2fs_iget_exit(inode, ret);
562 iput(inode);
563 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
564 return ERR_PTR(ret);
565 }
566
567 trace_f2fs_iget(inode);
568 return inode;
569 }
570
571 if (is_meta_ino(sbi, ino))
572 goto make_now;
573
574 ret = do_read_inode(inode);
575 if (ret)
576 goto bad_inode;
577 make_now:
578 if (ino == F2FS_NODE_INO(sbi)) {
579 inode->i_mapping->a_ops = &f2fs_node_aops;
580 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
581 } else if (ino == F2FS_META_INO(sbi)) {
582 inode->i_mapping->a_ops = &f2fs_meta_aops;
583 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
584 } else if (ino == F2FS_COMPRESS_INO(sbi)) {
585 #ifdef CONFIG_F2FS_FS_COMPRESSION
586 inode->i_mapping->a_ops = &f2fs_compress_aops;
587 /*
588 * generic_error_remove_page only truncates pages of regular
589 * inode
590 */
591 inode->i_mode |= S_IFREG;
592 #endif
593 mapping_set_gfp_mask(inode->i_mapping,
594 GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE);
595 } else if (S_ISREG(inode->i_mode)) {
596 inode->i_op = &f2fs_file_inode_operations;
597 inode->i_fop = &f2fs_file_operations;
598 inode->i_mapping->a_ops = &f2fs_dblock_aops;
599 } else if (S_ISDIR(inode->i_mode)) {
600 inode->i_op = &f2fs_dir_inode_operations;
601 inode->i_fop = &f2fs_dir_operations;
602 inode->i_mapping->a_ops = &f2fs_dblock_aops;
603 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
604 } else if (S_ISLNK(inode->i_mode)) {
605 if (file_is_encrypt(inode))
606 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
607 else
608 inode->i_op = &f2fs_symlink_inode_operations;
609 inode_nohighmem(inode);
610 inode->i_mapping->a_ops = &f2fs_dblock_aops;
611 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
612 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
613 inode->i_op = &f2fs_special_inode_operations;
614 init_special_inode(inode, inode->i_mode, inode->i_rdev);
615 } else {
616 ret = -EIO;
617 goto bad_inode;
618 }
619 f2fs_set_inode_flags(inode);
620
621 unlock_new_inode(inode);
622 trace_f2fs_iget(inode);
623 return inode;
624
625 bad_inode:
626 f2fs_inode_synced(inode);
627 iget_failed(inode);
628 trace_f2fs_iget_exit(inode, ret);
629 return ERR_PTR(ret);
630 }
631
f2fs_iget_retry(struct super_block * sb,unsigned long ino)632 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
633 {
634 struct inode *inode;
635 retry:
636 inode = f2fs_iget(sb, ino);
637 if (IS_ERR(inode)) {
638 if (PTR_ERR(inode) == -ENOMEM) {
639 memalloc_retry_wait(GFP_NOFS);
640 goto retry;
641 }
642 }
643 return inode;
644 }
645
f2fs_update_inode(struct inode * inode,struct page * node_page)646 void f2fs_update_inode(struct inode *inode, struct page *node_page)
647 {
648 struct f2fs_inode *ri;
649 struct extent_tree *et = F2FS_I(inode)->extent_tree[EX_READ];
650
651 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
652 set_page_dirty(node_page);
653
654 f2fs_inode_synced(inode);
655
656 ri = F2FS_INODE(node_page);
657
658 ri->i_mode = cpu_to_le16(inode->i_mode);
659 ri->i_advise = F2FS_I(inode)->i_advise;
660 ri->i_uid = cpu_to_le32(i_uid_read(inode));
661 ri->i_gid = cpu_to_le32(i_gid_read(inode));
662 ri->i_links = cpu_to_le32(inode->i_nlink);
663 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
664
665 if (!f2fs_is_atomic_file(inode) ||
666 is_inode_flag_set(inode, FI_ATOMIC_COMMITTED))
667 ri->i_size = cpu_to_le64(i_size_read(inode));
668
669 if (et) {
670 read_lock(&et->lock);
671 set_raw_read_extent(&et->largest, &ri->i_ext);
672 read_unlock(&et->lock);
673 } else {
674 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
675 }
676 set_raw_inline(inode, ri);
677
678 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
679 ri->i_ctime = cpu_to_le64(inode_get_ctime(inode).tv_sec);
680 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
681 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
682 ri->i_ctime_nsec = cpu_to_le32(inode_get_ctime(inode).tv_nsec);
683 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
684 if (S_ISDIR(inode->i_mode))
685 ri->i_current_depth =
686 cpu_to_le32(F2FS_I(inode)->i_current_depth);
687 else if (S_ISREG(inode->i_mode))
688 ri->i_gc_failures =
689 cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]);
690 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
691 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
692 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
693 ri->i_generation = cpu_to_le32(inode->i_generation);
694 ri->i_dir_level = F2FS_I(inode)->i_dir_level;
695
696 if (f2fs_has_extra_attr(inode)) {
697 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
698
699 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)))
700 ri->i_inline_xattr_size =
701 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
702
703 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) &&
704 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
705 i_projid)) {
706 projid_t i_projid;
707
708 i_projid = from_kprojid(&init_user_ns,
709 F2FS_I(inode)->i_projid);
710 ri->i_projid = cpu_to_le32(i_projid);
711 }
712
713 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
714 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
715 i_crtime)) {
716 ri->i_crtime =
717 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
718 ri->i_crtime_nsec =
719 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
720 }
721
722 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) &&
723 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
724 i_compress_flag)) {
725 unsigned short compress_flag;
726
727 ri->i_compr_blocks =
728 cpu_to_le64(atomic_read(
729 &F2FS_I(inode)->i_compr_blocks));
730 ri->i_compress_algorithm =
731 F2FS_I(inode)->i_compress_algorithm;
732 compress_flag = F2FS_I(inode)->i_compress_flag |
733 F2FS_I(inode)->i_compress_level <<
734 COMPRESS_LEVEL_OFFSET;
735 ri->i_compress_flag = cpu_to_le16(compress_flag);
736 ri->i_log_cluster_size =
737 F2FS_I(inode)->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
f2fs_update_inode_page(struct inode * inode)753 void 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;
758 retry:
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
f2fs_write_inode(struct inode * inode,struct writeback_control * wbc)776 int 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 return -ENOSPC;
793
794 /*
795 * We need to balance fs here to prevent from producing dirty node pages
796 * during the urgent cleaning time when running out of free sections.
797 */
798 f2fs_update_inode_page(inode);
799 if (wbc && wbc->nr_to_write)
800 f2fs_balance_fs(sbi, true);
801 return 0;
802 }
803
804 /*
805 * Called at the last iput() if i_nlink is zero
806 */
f2fs_evict_inode(struct inode * inode)807 void f2fs_evict_inode(struct inode *inode)
808 {
809 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
810 struct f2fs_inode_info *fi = F2FS_I(inode);
811 nid_t xnid = fi->i_xattr_nid;
812 int err = 0;
813
814 f2fs_abort_atomic_write(inode, true);
815
816 if (fi->cow_inode && f2fs_is_cow_file(fi->cow_inode)) {
817 clear_inode_flag(fi->cow_inode, FI_COW_FILE);
818 F2FS_I(fi->cow_inode)->atomic_inode = NULL;
819 iput(fi->cow_inode);
820 fi->cow_inode = NULL;
821 }
822
823 trace_f2fs_evict_inode(inode);
824 truncate_inode_pages_final(&inode->i_data);
825
826 if ((inode->i_nlink || is_bad_inode(inode)) &&
827 test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode))
828 f2fs_invalidate_compress_pages(sbi, inode->i_ino);
829
830 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
831 inode->i_ino == F2FS_META_INO(sbi) ||
832 inode->i_ino == F2FS_COMPRESS_INO(sbi))
833 goto out_clear;
834
835 f2fs_bug_on(sbi, get_dirty_pages(inode));
836 f2fs_remove_dirty_inode(inode);
837
838 f2fs_destroy_extent_tree(inode);
839
840 if (inode->i_nlink || is_bad_inode(inode))
841 goto no_delete;
842
843 err = f2fs_dquot_initialize(inode);
844 if (err) {
845 err = 0;
846 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
847 }
848
849 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
850 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
851 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
852
853 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING))
854 sb_start_intwrite(inode->i_sb);
855 set_inode_flag(inode, FI_NO_ALLOC);
856 i_size_write(inode, 0);
857 retry:
858 if (F2FS_HAS_BLOCKS(inode))
859 err = f2fs_truncate(inode);
860
861 if (time_to_inject(sbi, FAULT_EVICT_INODE))
862 err = -EIO;
863
864 if (!err) {
865 f2fs_lock_op(sbi);
866 err = f2fs_remove_inode_page(inode);
867 f2fs_unlock_op(sbi);
868 if (err == -ENOENT) {
869 err = 0;
870
871 /*
872 * in fuzzed image, another node may has the same
873 * block address as inode's, if it was truncated
874 * previously, truncation of inode node will fail.
875 */
876 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
877 f2fs_warn(F2FS_I_SB(inode),
878 "f2fs_evict_inode: inconsistent node id, ino:%lu",
879 inode->i_ino);
880 f2fs_inode_synced(inode);
881 set_sbi_flag(sbi, SBI_NEED_FSCK);
882 }
883 }
884 }
885
886 /* give more chances, if ENOMEM case */
887 if (err == -ENOMEM) {
888 err = 0;
889 goto retry;
890 }
891
892 if (err) {
893 f2fs_update_inode_page(inode);
894 if (dquot_initialize_needed(inode))
895 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
896 }
897 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING))
898 sb_end_intwrite(inode->i_sb);
899 no_delete:
900 dquot_drop(inode);
901
902 stat_dec_inline_xattr(inode);
903 stat_dec_inline_dir(inode);
904 stat_dec_inline_inode(inode);
905 stat_dec_compr_inode(inode);
906 stat_sub_compr_blocks(inode,
907 atomic_read(&fi->i_compr_blocks));
908
909 if (likely(!f2fs_cp_error(sbi) &&
910 !is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
911 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
912 else
913 f2fs_inode_synced(inode);
914
915 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */
916 if (inode->i_ino)
917 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
918 inode->i_ino);
919 if (xnid)
920 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
921 if (inode->i_nlink) {
922 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
923 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);
924 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
925 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
926 }
927 if (is_inode_flag_set(inode, FI_FREE_NID)) {
928 f2fs_alloc_nid_failed(sbi, inode->i_ino);
929 clear_inode_flag(inode, FI_FREE_NID);
930 } else {
931 /*
932 * If xattr nid is corrupted, we can reach out error condition,
933 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).
934 * In that case, f2fs_check_nid_range() is enough to give a clue.
935 */
936 }
937 out_clear:
938 fscrypt_put_encryption_info(inode);
939 fsverity_cleanup_inode(inode);
940 clear_inode(inode);
941 }
942
943 /* caller should call f2fs_lock_op() */
f2fs_handle_failed_inode(struct inode * inode)944 void f2fs_handle_failed_inode(struct inode *inode)
945 {
946 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
947 struct node_info ni;
948 int err;
949
950 /*
951 * clear nlink of inode in order to release resource of inode
952 * immediately.
953 */
954 clear_nlink(inode);
955
956 /*
957 * we must call this to avoid inode being remained as dirty, resulting
958 * in a panic when flushing dirty inodes in gdirty_list.
959 */
960 f2fs_update_inode_page(inode);
961 f2fs_inode_synced(inode);
962
963 /* don't make bad inode, since it becomes a regular file. */
964 unlock_new_inode(inode);
965
966 /*
967 * Note: we should add inode to orphan list before f2fs_unlock_op()
968 * so we can prevent losing this orphan when encoutering checkpoint
969 * and following suddenly power-off.
970 */
971 err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false);
972 if (err) {
973 set_sbi_flag(sbi, SBI_NEED_FSCK);
974 set_inode_flag(inode, FI_FREE_NID);
975 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix.");
976 goto out;
977 }
978
979 if (ni.blk_addr != NULL_ADDR) {
980 err = f2fs_acquire_orphan_inode(sbi);
981 if (err) {
982 set_sbi_flag(sbi, SBI_NEED_FSCK);
983 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix.");
984 } else {
985 f2fs_add_orphan_inode(inode);
986 }
987 f2fs_alloc_nid_done(sbi, inode->i_ino);
988 } else {
989 set_inode_flag(inode, FI_FREE_NID);
990 }
991
992 out:
993 f2fs_unlock_op(sbi);
994
995 /* iput will drop the inode object */
996 iput(inode);
997 }
998