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/backing-dev.h>
12 #include <linux/writeback.h>
13
14 #include "f2fs.h"
15 #include "node.h"
16 #include "segment.h"
17 #include "xattr.h"
18
19 #include <trace/events/f2fs.h>
20
21 #ifdef CONFIG_F2FS_FS_COMPRESSION
22 extern const struct address_space_operations f2fs_compress_aops;
23 #endif
24
f2fs_mark_inode_dirty_sync(struct inode * inode,bool sync)25 void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync)
26 {
27 if (is_inode_flag_set(inode, FI_NEW_INODE))
28 return;
29
30 if (f2fs_inode_dirtied(inode, sync))
31 return;
32
33 mark_inode_dirty_sync(inode);
34 }
35
f2fs_set_inode_flags(struct inode * inode)36 void f2fs_set_inode_flags(struct inode *inode)
37 {
38 unsigned int flags = F2FS_I(inode)->i_flags;
39 unsigned int new_fl = 0;
40
41 if (flags & F2FS_SYNC_FL)
42 new_fl |= S_SYNC;
43 if (flags & F2FS_APPEND_FL)
44 new_fl |= S_APPEND;
45 if (flags & F2FS_IMMUTABLE_FL)
46 new_fl |= S_IMMUTABLE;
47 if (flags & F2FS_NOATIME_FL)
48 new_fl |= S_NOATIME;
49 if (flags & F2FS_DIRSYNC_FL)
50 new_fl |= S_DIRSYNC;
51 if (file_is_encrypt(inode))
52 new_fl |= S_ENCRYPTED;
53 if (file_is_verity(inode))
54 new_fl |= S_VERITY;
55 if (flags & F2FS_CASEFOLD_FL)
56 new_fl |= S_CASEFOLD;
57 inode_set_flags(inode, new_fl,
58 S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|
59 S_ENCRYPTED|S_VERITY|S_CASEFOLD);
60 }
61
__get_inode_rdev(struct inode * inode,struct f2fs_inode * ri)62 static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
63 {
64 int extra_size = get_extra_isize(inode);
65
66 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
67 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
68 if (ri->i_addr[extra_size])
69 inode->i_rdev = old_decode_dev(
70 le32_to_cpu(ri->i_addr[extra_size]));
71 else
72 inode->i_rdev = new_decode_dev(
73 le32_to_cpu(ri->i_addr[extra_size + 1]));
74 }
75 }
76
__written_first_block(struct f2fs_sb_info * sbi,struct f2fs_inode * ri)77 static int __written_first_block(struct f2fs_sb_info *sbi,
78 struct f2fs_inode *ri)
79 {
80 block_t addr = le32_to_cpu(ri->i_addr[offset_in_addr(ri)]);
81
82 if (!__is_valid_data_blkaddr(addr))
83 return 1;
84 if (!f2fs_is_valid_blkaddr(sbi, addr, DATA_GENERIC_ENHANCE)) {
85 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
86 return -EFSCORRUPTED;
87 }
88 return 0;
89 }
90
__set_inode_rdev(struct inode * inode,struct f2fs_inode * ri)91 static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
92 {
93 int extra_size = get_extra_isize(inode);
94
95 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
96 if (old_valid_dev(inode->i_rdev)) {
97 ri->i_addr[extra_size] =
98 cpu_to_le32(old_encode_dev(inode->i_rdev));
99 ri->i_addr[extra_size + 1] = 0;
100 } else {
101 ri->i_addr[extra_size] = 0;
102 ri->i_addr[extra_size + 1] =
103 cpu_to_le32(new_encode_dev(inode->i_rdev));
104 ri->i_addr[extra_size + 2] = 0;
105 }
106 }
107 }
108
__recover_inline_status(struct inode * inode,struct page * ipage)109 static void __recover_inline_status(struct inode *inode, struct page *ipage)
110 {
111 void *inline_data = inline_data_addr(inode, ipage);
112 __le32 *start = inline_data;
113 __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);
114
115 while (start < end) {
116 if (*start++) {
117 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
118
119 set_inode_flag(inode, FI_DATA_EXIST);
120 set_raw_inline(inode, F2FS_INODE(ipage));
121 set_page_dirty(ipage);
122 return;
123 }
124 }
125 return;
126 }
127
f2fs_enable_inode_chksum(struct f2fs_sb_info * sbi,struct page * page)128 static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
129 {
130 struct f2fs_inode *ri = &F2FS_NODE(page)->i;
131
132 if (!f2fs_sb_has_inode_chksum(sbi))
133 return false;
134
135 if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR))
136 return false;
137
138 if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize),
139 i_inode_checksum))
140 return false;
141
142 return true;
143 }
144
f2fs_inode_chksum(struct f2fs_sb_info * sbi,struct page * page)145 static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
146 {
147 struct f2fs_node *node = F2FS_NODE(page);
148 struct f2fs_inode *ri = &node->i;
149 __le32 ino = node->footer.ino;
150 __le32 gen = ri->i_generation;
151 __u32 chksum, chksum_seed;
152 __u32 dummy_cs = 0;
153 unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum);
154 unsigned int cs_size = sizeof(dummy_cs);
155
156 chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino,
157 sizeof(ino));
158 chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen));
159
160 chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset);
161 chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size);
162 offset += cs_size;
163 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset,
164 F2FS_BLKSIZE - offset);
165 return chksum;
166 }
167
f2fs_inode_chksum_verify(struct f2fs_sb_info * sbi,struct page * page)168 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)
169 {
170 struct f2fs_inode *ri;
171 __u32 provided, calculated;
172
173 if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)))
174 return true;
175
176 #ifdef CONFIG_F2FS_CHECK_FS
177 if (!f2fs_enable_inode_chksum(sbi, page))
178 #else
179 if (!f2fs_enable_inode_chksum(sbi, page) ||
180 PageDirty(page) || PageWriteback(page))
181 #endif
182 return true;
183
184 ri = &F2FS_NODE(page)->i;
185 provided = le32_to_cpu(ri->i_inode_checksum);
186 calculated = f2fs_inode_chksum(sbi, page);
187
188 if (provided != calculated)
189 f2fs_warn(sbi, "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x",
190 page->index, ino_of_node(page), provided, calculated);
191
192 return provided == calculated;
193 }
194
f2fs_inode_chksum_set(struct f2fs_sb_info * sbi,struct page * page)195 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page)
196 {
197 struct f2fs_inode *ri = &F2FS_NODE(page)->i;
198
199 if (!f2fs_enable_inode_chksum(sbi, page))
200 return;
201
202 ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page));
203 }
204
sanity_check_inode(struct inode * inode,struct page * node_page)205 static bool sanity_check_inode(struct inode *inode, struct page *node_page)
206 {
207 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
208 struct f2fs_inode_info *fi = F2FS_I(inode);
209 struct f2fs_inode *ri = F2FS_INODE(node_page);
210 unsigned long long iblocks;
211
212 iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks);
213 if (!iblocks) {
214 set_sbi_flag(sbi, SBI_NEED_FSCK);
215 f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.",
216 __func__, inode->i_ino, iblocks);
217 return false;
218 }
219
220 if (ino_of_node(node_page) != nid_of_node(node_page)) {
221 set_sbi_flag(sbi, SBI_NEED_FSCK);
222 f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.",
223 __func__, inode->i_ino,
224 ino_of_node(node_page), nid_of_node(node_page));
225 return false;
226 }
227
228 if (f2fs_sb_has_flexible_inline_xattr(sbi)
229 && !f2fs_has_extra_attr(inode)) {
230 set_sbi_flag(sbi, SBI_NEED_FSCK);
231 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, run fsck to fix.",
232 __func__, inode->i_ino);
233 return false;
234 }
235
236 if (f2fs_has_extra_attr(inode) &&
237 !f2fs_sb_has_extra_attr(sbi)) {
238 set_sbi_flag(sbi, SBI_NEED_FSCK);
239 f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off",
240 __func__, inode->i_ino);
241 return false;
242 }
243
244 if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE ||
245 fi->i_extra_isize % sizeof(__le32)) {
246 set_sbi_flag(sbi, SBI_NEED_FSCK);
247 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu",
248 __func__, inode->i_ino, fi->i_extra_isize,
249 F2FS_TOTAL_EXTRA_ATTR_SIZE);
250 return false;
251 }
252
253 if (f2fs_has_extra_attr(inode) &&
254 f2fs_sb_has_flexible_inline_xattr(sbi) &&
255 f2fs_has_inline_xattr(inode) &&
256 (!fi->i_inline_xattr_size ||
257 fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) {
258 set_sbi_flag(sbi, SBI_NEED_FSCK);
259 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %lu",
260 __func__, inode->i_ino, fi->i_inline_xattr_size,
261 MAX_INLINE_XATTR_SIZE);
262 return false;
263 }
264
265 if (f2fs_sanity_check_inline_data(inode)) {
266 set_sbi_flag(sbi, SBI_NEED_FSCK);
267 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix",
268 __func__, inode->i_ino, inode->i_mode);
269 return false;
270 }
271
272 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
273 set_sbi_flag(sbi, SBI_NEED_FSCK);
274 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix",
275 __func__, inode->i_ino, inode->i_mode);
276 return false;
277 }
278
279 if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) {
280 set_sbi_flag(sbi, SBI_NEED_FSCK);
281 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off",
282 __func__, inode->i_ino);
283 return false;
284 }
285
286 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
287 fi->i_flags & F2FS_COMPR_FL &&
288 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
289 i_log_cluster_size)) {
290 if (ri->i_compress_algorithm >= COMPRESS_MAX) {
291 set_sbi_flag(sbi, SBI_NEED_FSCK);
292 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
293 "compress algorithm: %u, run fsck to fix",
294 __func__, inode->i_ino,
295 ri->i_compress_algorithm);
296 return false;
297 }
298 if (le64_to_cpu(ri->i_compr_blocks) >
299 SECTOR_TO_BLOCK(inode->i_blocks)) {
300 set_sbi_flag(sbi, SBI_NEED_FSCK);
301 f2fs_warn(sbi, "%s: inode (ino=%lx) has inconsistent "
302 "i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix",
303 __func__, inode->i_ino,
304 le64_to_cpu(ri->i_compr_blocks),
305 SECTOR_TO_BLOCK(inode->i_blocks));
306 return false;
307 }
308 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
309 ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) {
310 set_sbi_flag(sbi, SBI_NEED_FSCK);
311 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
312 "log cluster size: %u, run fsck to fix",
313 __func__, inode->i_ino,
314 ri->i_log_cluster_size);
315 return false;
316 }
317 }
318
319 return true;
320 }
321
init_idisk_time(struct inode * inode)322 static void init_idisk_time(struct inode *inode)
323 {
324 struct f2fs_inode_info *fi = F2FS_I(inode);
325
326 fi->i_disk_time[0] = inode->i_atime;
327 fi->i_disk_time[1] = inode->i_ctime;
328 fi->i_disk_time[2] = inode->i_mtime;
329 }
330
do_read_inode(struct inode * inode)331 static int do_read_inode(struct inode *inode)
332 {
333 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
334 struct f2fs_inode_info *fi = F2FS_I(inode);
335 struct page *node_page;
336 struct f2fs_inode *ri;
337 projid_t i_projid;
338 int err;
339
340 /* Check if ino is within scope */
341 if (f2fs_check_nid_range(sbi, inode->i_ino))
342 return -EINVAL;
343
344 node_page = f2fs_get_node_page(sbi, inode->i_ino);
345 if (IS_ERR(node_page))
346 return PTR_ERR(node_page);
347
348 ri = F2FS_INODE(node_page);
349
350 inode->i_mode = le16_to_cpu(ri->i_mode);
351 i_uid_write(inode, le32_to_cpu(ri->i_uid));
352 i_gid_write(inode, le32_to_cpu(ri->i_gid));
353 set_nlink(inode, le32_to_cpu(ri->i_links));
354 inode->i_size = le64_to_cpu(ri->i_size);
355 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
356
357 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
358 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
359 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
360 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
361 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
362 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
363 inode->i_generation = le32_to_cpu(ri->i_generation);
364 if (S_ISDIR(inode->i_mode))
365 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
366 else if (S_ISREG(inode->i_mode))
367 fi->i_gc_failures[GC_FAILURE_PIN] =
368 le16_to_cpu(ri->i_gc_failures);
369 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
370 fi->i_flags = le32_to_cpu(ri->i_flags);
371 if (S_ISREG(inode->i_mode))
372 fi->i_flags &= ~F2FS_PROJINHERIT_FL;
373 bitmap_zero(fi->flags, FI_MAX);
374 fi->i_advise = ri->i_advise;
375 fi->i_pino = le32_to_cpu(ri->i_pino);
376 fi->i_dir_level = ri->i_dir_level;
377
378 get_inline_info(inode, ri);
379
380 fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
381 le16_to_cpu(ri->i_extra_isize) : 0;
382
383 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
384 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
385 } else if (f2fs_has_inline_xattr(inode) ||
386 f2fs_has_inline_dentry(inode)) {
387 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
388 } else {
389
390 /*
391 * Previous inline data or directory always reserved 200 bytes
392 * in inode layout, even if inline_xattr is disabled. In order
393 * to keep inline_dentry's structure for backward compatibility,
394 * we get the space back only from inline_data.
395 */
396 fi->i_inline_xattr_size = 0;
397 }
398
399 /* check data exist */
400 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
401 __recover_inline_status(inode, node_page);
402
403 /* try to recover cold bit for non-dir inode */
404 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) {
405 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
406 set_cold_node(node_page, false);
407 set_page_dirty(node_page);
408 }
409
410 /* get rdev by using inline_info */
411 __get_inode_rdev(inode, ri);
412
413 if (S_ISREG(inode->i_mode)) {
414 err = __written_first_block(sbi, ri);
415 if (err < 0) {
416 f2fs_put_page(node_page, 1);
417 return err;
418 }
419 if (!err)
420 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
421 }
422
423 if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
424 fi->last_disk_size = inode->i_size;
425
426 if (fi->i_flags & F2FS_PROJINHERIT_FL)
427 set_inode_flag(inode, FI_PROJ_INHERIT);
428
429 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) &&
430 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
431 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
432 else
433 i_projid = F2FS_DEF_PROJID;
434 fi->i_projid = make_kprojid(&init_user_ns, i_projid);
435
436 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) &&
437 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
438 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
439 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
440 }
441
442 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
443 (fi->i_flags & F2FS_COMPR_FL)) {
444 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
445 i_log_cluster_size)) {
446 unsigned short compress_flag;
447
448 atomic_set(&fi->i_compr_blocks,
449 le64_to_cpu(ri->i_compr_blocks));
450 fi->i_compress_algorithm = ri->i_compress_algorithm;
451 fi->i_log_cluster_size = ri->i_log_cluster_size;
452 compress_flag = le16_to_cpu(ri->i_compress_flag);
453 fi->i_compress_level = compress_flag >>
454 COMPRESS_LEVEL_OFFSET;
455 fi->i_compress_flag = compress_flag &
456 GENMASK(COMPRESS_LEVEL_OFFSET - 1, 0);
457 fi->i_cluster_size = BIT(fi->i_log_cluster_size);
458 set_inode_flag(inode, FI_COMPRESSED_FILE);
459 }
460 }
461
462 init_idisk_time(inode);
463
464 /* Need all the flag bits */
465 f2fs_init_read_extent_tree(inode, node_page);
466 f2fs_init_age_extent_tree(inode);
467
468 if (!sanity_check_inode(inode, node_page)) {
469 f2fs_put_page(node_page, 1);
470 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
471 return -EFSCORRUPTED;
472 }
473
474 if (!sanity_check_extent_cache(inode)) {
475 f2fs_put_page(node_page, 1);
476 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
477 return -EFSCORRUPTED;
478 }
479
480 f2fs_put_page(node_page, 1);
481
482 stat_inc_inline_xattr(inode);
483 stat_inc_inline_inode(inode);
484 stat_inc_inline_dir(inode);
485 stat_inc_compr_inode(inode);
486 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks));
487
488 return 0;
489 }
490
is_meta_ino(struct f2fs_sb_info * sbi,unsigned int ino)491 static bool is_meta_ino(struct f2fs_sb_info *sbi, unsigned int ino)
492 {
493 return ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi) ||
494 ino == F2FS_COMPRESS_INO(sbi);
495 }
496
f2fs_iget(struct super_block * sb,unsigned long ino)497 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
498 {
499 struct f2fs_sb_info *sbi = F2FS_SB(sb);
500 struct inode *inode;
501 int ret = 0;
502
503 inode = iget_locked(sb, ino);
504 if (!inode)
505 return ERR_PTR(-ENOMEM);
506
507 if (!(inode->i_state & I_NEW)) {
508 if (is_meta_ino(sbi, ino)) {
509 f2fs_err(sbi, "inaccessible inode: %lu, run fsck to repair", ino);
510 set_sbi_flag(sbi, SBI_NEED_FSCK);
511 ret = -EFSCORRUPTED;
512 trace_f2fs_iget_exit(inode, ret);
513 iput(inode);
514 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
515 return ERR_PTR(ret);
516 }
517
518 trace_f2fs_iget(inode);
519 return inode;
520 }
521
522 if (is_meta_ino(sbi, ino))
523 goto make_now;
524
525 ret = do_read_inode(inode);
526 if (ret)
527 goto bad_inode;
528 make_now:
529 if (ino == F2FS_NODE_INO(sbi)) {
530 inode->i_mapping->a_ops = &f2fs_node_aops;
531 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
532 } else if (ino == F2FS_META_INO(sbi)) {
533 inode->i_mapping->a_ops = &f2fs_meta_aops;
534 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
535 } else if (ino == F2FS_COMPRESS_INO(sbi)) {
536 #ifdef CONFIG_F2FS_FS_COMPRESSION
537 inode->i_mapping->a_ops = &f2fs_compress_aops;
538 /*
539 * generic_error_remove_page only truncates pages of regular
540 * inode
541 */
542 inode->i_mode |= S_IFREG;
543 #endif
544 mapping_set_gfp_mask(inode->i_mapping,
545 GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE);
546 } else if (S_ISREG(inode->i_mode)) {
547 inode->i_op = &f2fs_file_inode_operations;
548 inode->i_fop = &f2fs_file_operations;
549 inode->i_mapping->a_ops = &f2fs_dblock_aops;
550 } else if (S_ISDIR(inode->i_mode)) {
551 inode->i_op = &f2fs_dir_inode_operations;
552 inode->i_fop = &f2fs_dir_operations;
553 inode->i_mapping->a_ops = &f2fs_dblock_aops;
554 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
555 } else if (S_ISLNK(inode->i_mode)) {
556 if (file_is_encrypt(inode))
557 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
558 else
559 inode->i_op = &f2fs_symlink_inode_operations;
560 inode_nohighmem(inode);
561 inode->i_mapping->a_ops = &f2fs_dblock_aops;
562 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
563 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
564 inode->i_op = &f2fs_special_inode_operations;
565 init_special_inode(inode, inode->i_mode, inode->i_rdev);
566 } else {
567 ret = -EIO;
568 goto bad_inode;
569 }
570 f2fs_set_inode_flags(inode);
571
572 if (file_should_truncate(inode) &&
573 !is_sbi_flag_set(sbi, SBI_POR_DOING)) {
574 ret = f2fs_truncate(inode);
575 if (ret)
576 goto bad_inode;
577 file_dont_truncate(inode);
578 }
579
580 unlock_new_inode(inode);
581 trace_f2fs_iget(inode);
582 return inode;
583
584 bad_inode:
585 f2fs_inode_synced(inode);
586 iget_failed(inode);
587 trace_f2fs_iget_exit(inode, ret);
588 return ERR_PTR(ret);
589 }
590
f2fs_iget_retry(struct super_block * sb,unsigned long ino)591 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
592 {
593 struct inode *inode;
594 retry:
595 inode = f2fs_iget(sb, ino);
596 if (IS_ERR(inode)) {
597 if (PTR_ERR(inode) == -ENOMEM) {
598 congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
599 goto retry;
600 }
601 }
602 return inode;
603 }
604
f2fs_update_inode(struct inode * inode,struct page * node_page)605 void f2fs_update_inode(struct inode *inode, struct page *node_page)
606 {
607 struct f2fs_inode *ri;
608 struct extent_tree *et = F2FS_I(inode)->extent_tree[EX_READ];
609
610 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
611 set_page_dirty(node_page);
612
613 f2fs_inode_synced(inode);
614
615 ri = F2FS_INODE(node_page);
616
617 ri->i_mode = cpu_to_le16(inode->i_mode);
618 ri->i_advise = F2FS_I(inode)->i_advise;
619 ri->i_uid = cpu_to_le32(i_uid_read(inode));
620 ri->i_gid = cpu_to_le32(i_gid_read(inode));
621 ri->i_links = cpu_to_le32(inode->i_nlink);
622 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
623
624 if (!f2fs_is_atomic_file(inode) ||
625 is_inode_flag_set(inode, FI_ATOMIC_COMMITTED))
626 ri->i_size = cpu_to_le64(i_size_read(inode));
627
628 if (et) {
629 read_lock(&et->lock);
630 set_raw_read_extent(&et->largest, &ri->i_ext);
631 read_unlock(&et->lock);
632 } else {
633 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
634 }
635 set_raw_inline(inode, ri);
636
637 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
638 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
639 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
640 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
641 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
642 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
643 if (S_ISDIR(inode->i_mode))
644 ri->i_current_depth =
645 cpu_to_le32(F2FS_I(inode)->i_current_depth);
646 else if (S_ISREG(inode->i_mode))
647 ri->i_gc_failures =
648 cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]);
649 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
650 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
651 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
652 ri->i_generation = cpu_to_le32(inode->i_generation);
653 ri->i_dir_level = F2FS_I(inode)->i_dir_level;
654
655 if (f2fs_has_extra_attr(inode)) {
656 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
657
658 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)))
659 ri->i_inline_xattr_size =
660 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
661
662 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) &&
663 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
664 i_projid)) {
665 projid_t i_projid;
666
667 i_projid = from_kprojid(&init_user_ns,
668 F2FS_I(inode)->i_projid);
669 ri->i_projid = cpu_to_le32(i_projid);
670 }
671
672 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
673 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
674 i_crtime)) {
675 ri->i_crtime =
676 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
677 ri->i_crtime_nsec =
678 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
679 }
680
681 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) &&
682 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
683 i_log_cluster_size)) {
684 unsigned short compress_flag;
685
686 ri->i_compr_blocks =
687 cpu_to_le64(atomic_read(
688 &F2FS_I(inode)->i_compr_blocks));
689 ri->i_compress_algorithm =
690 F2FS_I(inode)->i_compress_algorithm;
691 compress_flag = F2FS_I(inode)->i_compress_flag |
692 F2FS_I(inode)->i_compress_level <<
693 COMPRESS_LEVEL_OFFSET;
694 ri->i_compress_flag = cpu_to_le16(compress_flag);
695 ri->i_log_cluster_size =
696 F2FS_I(inode)->i_log_cluster_size;
697 }
698 }
699
700 __set_inode_rdev(inode, ri);
701
702 /* deleted inode */
703 if (inode->i_nlink == 0)
704 clear_page_private_inline(node_page);
705
706 init_idisk_time(inode);
707 #ifdef CONFIG_F2FS_CHECK_FS
708 f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);
709 #endif
710 }
711
f2fs_update_inode_page(struct inode * inode)712 void f2fs_update_inode_page(struct inode *inode)
713 {
714 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
715 struct page *node_page;
716 int count = 0;
717 retry:
718 node_page = f2fs_get_node_page(sbi, inode->i_ino);
719 if (IS_ERR(node_page)) {
720 int err = PTR_ERR(node_page);
721
722 /* The node block was truncated. */
723 if (err == -ENOENT)
724 return;
725
726 if (err == -ENOMEM || ++count <= DEFAULT_RETRY_IO_COUNT)
727 goto retry;
728 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_UPDATE_INODE);
729 return;
730 }
731 f2fs_update_inode(inode, node_page);
732 f2fs_put_page(node_page, 1);
733 }
734
f2fs_write_inode(struct inode * inode,struct writeback_control * wbc)735 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
736 {
737 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
738
739 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
740 inode->i_ino == F2FS_META_INO(sbi))
741 return 0;
742
743 /*
744 * atime could be updated without dirtying f2fs inode in lazytime mode
745 */
746 if (f2fs_is_time_consistent(inode) &&
747 !is_inode_flag_set(inode, FI_DIRTY_INODE))
748 return 0;
749
750 if (!f2fs_is_checkpoint_ready(sbi))
751 return -ENOSPC;
752
753 /*
754 * We need to balance fs here to prevent from producing dirty node pages
755 * during the urgent cleaning time when running out of free sections.
756 */
757 f2fs_update_inode_page(inode);
758 if (wbc && wbc->nr_to_write)
759 f2fs_balance_fs(sbi, true);
760 return 0;
761 }
762
763 /*
764 * Called at the last iput() if i_nlink is zero
765 */
f2fs_evict_inode(struct inode * inode)766 void f2fs_evict_inode(struct inode *inode)
767 {
768 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
769 struct f2fs_inode_info *fi = F2FS_I(inode);
770 nid_t xnid = fi->i_xattr_nid;
771 int err = 0;
772
773 f2fs_abort_atomic_write(inode, true);
774
775 if (fi->cow_inode) {
776 clear_inode_flag(fi->cow_inode, FI_COW_FILE);
777 iput(fi->cow_inode);
778 fi->cow_inode = NULL;
779 }
780
781 trace_f2fs_evict_inode(inode);
782 truncate_inode_pages_final(&inode->i_data);
783
784 if ((inode->i_nlink || is_bad_inode(inode)) &&
785 test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode))
786 f2fs_invalidate_compress_pages(sbi, inode->i_ino);
787
788 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
789 inode->i_ino == F2FS_META_INO(sbi) ||
790 inode->i_ino == F2FS_COMPRESS_INO(sbi))
791 goto out_clear;
792
793 f2fs_bug_on(sbi, get_dirty_pages(inode));
794 f2fs_remove_dirty_inode(inode);
795
796 f2fs_destroy_extent_tree(inode);
797
798 if (inode->i_nlink || is_bad_inode(inode))
799 goto no_delete;
800
801 err = f2fs_dquot_initialize(inode);
802 if (err) {
803 err = 0;
804 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
805 }
806
807 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
808 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
809 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
810
811 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING))
812 sb_start_intwrite(inode->i_sb);
813 set_inode_flag(inode, FI_NO_ALLOC);
814 i_size_write(inode, 0);
815 retry:
816 if (F2FS_HAS_BLOCKS(inode))
817 err = f2fs_truncate(inode);
818
819 if (time_to_inject(sbi, FAULT_EVICT_INODE))
820 err = -EIO;
821
822 if (!err) {
823 f2fs_lock_op(sbi);
824 err = f2fs_remove_inode_page(inode);
825 f2fs_unlock_op(sbi);
826 if (err == -ENOENT) {
827 err = 0;
828
829 /*
830 * in fuzzed image, another node may has the same
831 * block address as inode's, if it was truncated
832 * previously, truncation of inode node will fail.
833 */
834 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
835 f2fs_warn(F2FS_I_SB(inode),
836 "f2fs_evict_inode: inconsistent node id, ino:%lu",
837 inode->i_ino);
838 f2fs_inode_synced(inode);
839 set_sbi_flag(sbi, SBI_NEED_FSCK);
840 }
841 }
842 }
843
844 /* give more chances, if ENOMEM case */
845 if (err == -ENOMEM) {
846 err = 0;
847 goto retry;
848 }
849
850 if (err) {
851 f2fs_update_inode_page(inode);
852 if (dquot_initialize_needed(inode))
853 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
854 }
855 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING))
856 sb_end_intwrite(inode->i_sb);
857 no_delete:
858 dquot_drop(inode);
859
860 stat_dec_inline_xattr(inode);
861 stat_dec_inline_dir(inode);
862 stat_dec_inline_inode(inode);
863 stat_dec_compr_inode(inode);
864 stat_sub_compr_blocks(inode,
865 atomic_read(&fi->i_compr_blocks));
866
867 if (likely(!f2fs_cp_error(sbi) &&
868 !is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
869 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
870 else
871 f2fs_inode_synced(inode);
872
873 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */
874 if (inode->i_ino)
875 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
876 inode->i_ino);
877 if (xnid)
878 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
879 if (inode->i_nlink) {
880 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
881 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);
882 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
883 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
884 }
885 if (is_inode_flag_set(inode, FI_FREE_NID)) {
886 f2fs_alloc_nid_failed(sbi, inode->i_ino);
887 clear_inode_flag(inode, FI_FREE_NID);
888 } else {
889 /*
890 * If xattr nid is corrupted, we can reach out error condition,
891 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).
892 * In that case, f2fs_check_nid_range() is enough to give a clue.
893 */
894 }
895 out_clear:
896 fscrypt_put_encryption_info(inode);
897 fsverity_cleanup_inode(inode);
898 clear_inode(inode);
899 }
900
901 /* caller should call f2fs_lock_op() */
f2fs_handle_failed_inode(struct inode * inode)902 void f2fs_handle_failed_inode(struct inode *inode)
903 {
904 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
905 struct node_info ni;
906 int err;
907
908 /*
909 * clear nlink of inode in order to release resource of inode
910 * immediately.
911 */
912 clear_nlink(inode);
913
914 /*
915 * we must call this to avoid inode being remained as dirty, resulting
916 * in a panic when flushing dirty inodes in gdirty_list.
917 */
918 f2fs_update_inode_page(inode);
919 f2fs_inode_synced(inode);
920
921 /* don't make bad inode, since it becomes a regular file. */
922 unlock_new_inode(inode);
923
924 /*
925 * Note: we should add inode to orphan list before f2fs_unlock_op()
926 * so we can prevent losing this orphan when encoutering checkpoint
927 * and following suddenly power-off.
928 */
929 err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false);
930 if (err) {
931 set_sbi_flag(sbi, SBI_NEED_FSCK);
932 set_inode_flag(inode, FI_FREE_NID);
933 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix.");
934 goto out;
935 }
936
937 if (ni.blk_addr != NULL_ADDR) {
938 err = f2fs_acquire_orphan_inode(sbi);
939 if (err) {
940 set_sbi_flag(sbi, SBI_NEED_FSCK);
941 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix.");
942 } else {
943 f2fs_add_orphan_inode(inode);
944 }
945 f2fs_alloc_nid_done(sbi, inode->i_ino);
946 } else {
947 set_inode_flag(inode, FI_FREE_NID);
948 }
949
950 out:
951 f2fs_unlock_op(sbi);
952
953 /* iput will drop the inode object */
954 iput(inode);
955 }
956