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
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: %zu",
260 __func__, inode->i_ino, fi->i_inline_xattr_size,
261 MAX_INLINE_XATTR_SIZE);
262 return false;
263 }
264
265 if (fi->extent_tree) {
266 struct extent_info *ei = &fi->extent_tree->largest;
267
268 if (ei->len &&
269 (!f2fs_is_valid_blkaddr(sbi, ei->blk,
270 DATA_GENERIC_ENHANCE) ||
271 !f2fs_is_valid_blkaddr(sbi, ei->blk + ei->len - 1,
272 DATA_GENERIC_ENHANCE))) {
273 set_sbi_flag(sbi, SBI_NEED_FSCK);
274 f2fs_warn(sbi, "%s: inode (ino=%lx) extent info [%u, %u, %u] is incorrect, run fsck to fix",
275 __func__, inode->i_ino,
276 ei->blk, ei->fofs, ei->len);
277 return false;
278 }
279 }
280
281 if (f2fs_sanity_check_inline_data(inode)) {
282 set_sbi_flag(sbi, SBI_NEED_FSCK);
283 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix",
284 __func__, inode->i_ino, inode->i_mode);
285 return false;
286 }
287
288 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
289 set_sbi_flag(sbi, SBI_NEED_FSCK);
290 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix",
291 __func__, inode->i_ino, inode->i_mode);
292 return false;
293 }
294
295 if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) {
296 set_sbi_flag(sbi, SBI_NEED_FSCK);
297 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off",
298 __func__, inode->i_ino);
299 return false;
300 }
301
302 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
303 fi->i_flags & F2FS_COMPR_FL &&
304 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
305 i_log_cluster_size)) {
306 if (ri->i_compress_algorithm >= COMPRESS_MAX) {
307 set_sbi_flag(sbi, SBI_NEED_FSCK);
308 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
309 "compress algorithm: %u, run fsck to fix",
310 __func__, inode->i_ino,
311 ri->i_compress_algorithm);
312 return false;
313 }
314 if (le64_to_cpu(ri->i_compr_blocks) >
315 SECTOR_TO_BLOCK(inode->i_blocks)) {
316 set_sbi_flag(sbi, SBI_NEED_FSCK);
317 f2fs_warn(sbi, "%s: inode (ino=%lx) has inconsistent "
318 "i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix",
319 __func__, inode->i_ino,
320 le64_to_cpu(ri->i_compr_blocks),
321 SECTOR_TO_BLOCK(inode->i_blocks));
322 return false;
323 }
324 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
325 ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) {
326 set_sbi_flag(sbi, SBI_NEED_FSCK);
327 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
328 "log cluster size: %u, run fsck to fix",
329 __func__, inode->i_ino,
330 ri->i_log_cluster_size);
331 return false;
332 }
333 }
334
335 return true;
336 }
337
init_idisk_time(struct inode * inode)338 static void init_idisk_time(struct inode *inode)
339 {
340 struct f2fs_inode_info *fi = F2FS_I(inode);
341
342 fi->i_disk_time[0] = inode->i_atime;
343 fi->i_disk_time[1] = inode->i_ctime;
344 fi->i_disk_time[2] = inode->i_mtime;
345 fi->i_disk_time[3] = fi->i_crtime;
346 }
347
do_read_inode(struct inode * inode)348 static int do_read_inode(struct inode *inode)
349 {
350 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
351 struct f2fs_inode_info *fi = F2FS_I(inode);
352 struct page *node_page;
353 struct f2fs_inode *ri;
354 projid_t i_projid;
355 int err;
356
357 /* Check if ino is within scope */
358 if (f2fs_check_nid_range(sbi, inode->i_ino))
359 return -EINVAL;
360
361 node_page = f2fs_get_node_page(sbi, inode->i_ino);
362 if (IS_ERR(node_page))
363 return PTR_ERR(node_page);
364
365 ri = F2FS_INODE(node_page);
366
367 inode->i_mode = le16_to_cpu(ri->i_mode);
368 i_uid_write(inode, le32_to_cpu(ri->i_uid));
369 i_gid_write(inode, le32_to_cpu(ri->i_gid));
370 set_nlink(inode, le32_to_cpu(ri->i_links));
371 inode->i_size = le64_to_cpu(ri->i_size);
372 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
373
374 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
375 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
376 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
377 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
378 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
379 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
380 inode->i_generation = le32_to_cpu(ri->i_generation);
381 if (S_ISDIR(inode->i_mode))
382 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
383 else if (S_ISREG(inode->i_mode))
384 fi->i_gc_failures[GC_FAILURE_PIN] =
385 le16_to_cpu(ri->i_gc_failures);
386 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
387 fi->i_flags = le32_to_cpu(ri->i_flags);
388 if (S_ISREG(inode->i_mode))
389 fi->i_flags &= ~F2FS_PROJINHERIT_FL;
390 bitmap_zero(fi->flags, FI_MAX);
391 fi->i_advise = ri->i_advise;
392 fi->i_pino = le32_to_cpu(ri->i_pino);
393 fi->i_dir_level = ri->i_dir_level;
394
395 f2fs_init_extent_tree(inode, node_page);
396
397 get_inline_info(inode, ri);
398
399 fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
400 le16_to_cpu(ri->i_extra_isize) : 0;
401
402 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
403 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
404 } else if (f2fs_has_inline_xattr(inode) ||
405 f2fs_has_inline_dentry(inode)) {
406 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
407 } else {
408
409 /*
410 * Previous inline data or directory always reserved 200 bytes
411 * in inode layout, even if inline_xattr is disabled. In order
412 * to keep inline_dentry's structure for backward compatibility,
413 * we get the space back only from inline_data.
414 */
415 fi->i_inline_xattr_size = 0;
416 }
417
418 if (!sanity_check_inode(inode, node_page)) {
419 f2fs_put_page(node_page, 1);
420 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
421 return -EFSCORRUPTED;
422 }
423
424 /* check data exist */
425 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
426 __recover_inline_status(inode, node_page);
427
428 /* try to recover cold bit for non-dir inode */
429 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) {
430 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
431 set_cold_node(node_page, false);
432 set_page_dirty(node_page);
433 }
434
435 /* get rdev by using inline_info */
436 __get_inode_rdev(inode, ri);
437
438 if (S_ISREG(inode->i_mode)) {
439 err = __written_first_block(sbi, ri);
440 if (err < 0) {
441 f2fs_put_page(node_page, 1);
442 return err;
443 }
444 if (!err)
445 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
446 }
447
448 if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
449 fi->last_disk_size = inode->i_size;
450
451 if (fi->i_flags & F2FS_PROJINHERIT_FL)
452 set_inode_flag(inode, FI_PROJ_INHERIT);
453
454 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) &&
455 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
456 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
457 else
458 i_projid = F2FS_DEF_PROJID;
459 fi->i_projid = make_kprojid(&init_user_ns, i_projid);
460
461 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) &&
462 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
463 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
464 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
465 }
466
467 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
468 (fi->i_flags & F2FS_COMPR_FL)) {
469 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
470 i_log_cluster_size)) {
471 atomic_set(&fi->i_compr_blocks,
472 le64_to_cpu(ri->i_compr_blocks));
473 fi->i_compress_algorithm = ri->i_compress_algorithm;
474 fi->i_log_cluster_size = ri->i_log_cluster_size;
475 fi->i_compress_flag = le16_to_cpu(ri->i_compress_flag);
476 fi->i_cluster_size = 1 << fi->i_log_cluster_size;
477 set_inode_flag(inode, FI_COMPRESSED_FILE);
478 }
479 }
480
481 init_idisk_time(inode);
482 f2fs_put_page(node_page, 1);
483
484 stat_inc_inline_xattr(inode);
485 stat_inc_inline_inode(inode);
486 stat_inc_inline_dir(inode);
487 stat_inc_compr_inode(inode);
488 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks));
489
490 return 0;
491 }
492
is_meta_ino(struct f2fs_sb_info * sbi,unsigned int ino)493 static bool is_meta_ino(struct f2fs_sb_info *sbi, unsigned int ino)
494 {
495 return ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi) ||
496 ino == F2FS_COMPRESS_INO(sbi);
497 }
498
f2fs_iget(struct super_block * sb,unsigned long ino)499 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
500 {
501 struct f2fs_sb_info *sbi = F2FS_SB(sb);
502 struct inode *inode;
503 int ret = 0;
504
505 inode = iget_locked(sb, ino);
506 if (!inode)
507 return ERR_PTR(-ENOMEM);
508
509 if (!(inode->i_state & I_NEW)) {
510 if (is_meta_ino(sbi, ino)) {
511 f2fs_err(sbi, "inaccessible inode: %lu, run fsck to repair", ino);
512 set_sbi_flag(sbi, SBI_NEED_FSCK);
513 ret = -EFSCORRUPTED;
514 trace_f2fs_iget_exit(inode, ret);
515 iput(inode);
516 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
517 return ERR_PTR(ret);
518 }
519
520 trace_f2fs_iget(inode);
521 return inode;
522 }
523
524 if (is_meta_ino(sbi, ino))
525 goto make_now;
526
527 ret = do_read_inode(inode);
528 if (ret)
529 goto bad_inode;
530 make_now:
531 if (ino == F2FS_NODE_INO(sbi)) {
532 inode->i_mapping->a_ops = &f2fs_node_aops;
533 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
534 } else if (ino == F2FS_META_INO(sbi)) {
535 inode->i_mapping->a_ops = &f2fs_meta_aops;
536 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
537 } else if (ino == F2FS_COMPRESS_INO(sbi)) {
538 #ifdef CONFIG_F2FS_FS_COMPRESSION
539 inode->i_mapping->a_ops = &f2fs_compress_aops;
540 /*
541 * generic_error_remove_page only truncates pages of regular
542 * inode
543 */
544 inode->i_mode |= S_IFREG;
545 #endif
546 mapping_set_gfp_mask(inode->i_mapping,
547 GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE);
548 } else if (S_ISREG(inode->i_mode)) {
549 inode->i_op = &f2fs_file_inode_operations;
550 inode->i_fop = &f2fs_file_operations;
551 inode->i_mapping->a_ops = &f2fs_dblock_aops;
552 } else if (S_ISDIR(inode->i_mode)) {
553 inode->i_op = &f2fs_dir_inode_operations;
554 inode->i_fop = &f2fs_dir_operations;
555 inode->i_mapping->a_ops = &f2fs_dblock_aops;
556 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
557 } else if (S_ISLNK(inode->i_mode)) {
558 if (file_is_encrypt(inode))
559 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
560 else
561 inode->i_op = &f2fs_symlink_inode_operations;
562 inode_nohighmem(inode);
563 inode->i_mapping->a_ops = &f2fs_dblock_aops;
564 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
565 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
566 inode->i_op = &f2fs_special_inode_operations;
567 init_special_inode(inode, inode->i_mode, inode->i_rdev);
568 } else {
569 ret = -EIO;
570 goto bad_inode;
571 }
572 f2fs_set_inode_flags(inode);
573
574 if (file_should_truncate(inode) &&
575 !is_sbi_flag_set(sbi, SBI_POR_DOING)) {
576 ret = f2fs_truncate(inode);
577 if (ret)
578 goto bad_inode;
579 file_dont_truncate(inode);
580 }
581
582 unlock_new_inode(inode);
583 trace_f2fs_iget(inode);
584 return inode;
585
586 bad_inode:
587 f2fs_inode_synced(inode);
588 iget_failed(inode);
589 trace_f2fs_iget_exit(inode, ret);
590 return ERR_PTR(ret);
591 }
592
f2fs_iget_retry(struct super_block * sb,unsigned long ino)593 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
594 {
595 struct inode *inode;
596 retry:
597 inode = f2fs_iget(sb, ino);
598 if (IS_ERR(inode)) {
599 if (PTR_ERR(inode) == -ENOMEM) {
600 memalloc_retry_wait(GFP_NOFS);
601 goto retry;
602 }
603 }
604 return inode;
605 }
606
f2fs_update_inode(struct inode * inode,struct page * node_page)607 void f2fs_update_inode(struct inode *inode, struct page *node_page)
608 {
609 struct f2fs_inode *ri;
610 struct extent_tree *et = F2FS_I(inode)->extent_tree;
611
612 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
613 set_page_dirty(node_page);
614
615 f2fs_inode_synced(inode);
616
617 ri = F2FS_INODE(node_page);
618
619 ri->i_mode = cpu_to_le16(inode->i_mode);
620 ri->i_advise = F2FS_I(inode)->i_advise;
621 ri->i_uid = cpu_to_le32(i_uid_read(inode));
622 ri->i_gid = cpu_to_le32(i_gid_read(inode));
623 ri->i_links = cpu_to_le32(inode->i_nlink);
624 ri->i_size = cpu_to_le64(i_size_read(inode));
625 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
626
627 if (et) {
628 read_lock(&et->lock);
629 set_raw_extent(&et->largest, &ri->i_ext);
630 read_unlock(&et->lock);
631 } else {
632 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
633 }
634 set_raw_inline(inode, ri);
635
636 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
637 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
638 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
639 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
640 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
641 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
642 if (S_ISDIR(inode->i_mode))
643 ri->i_current_depth =
644 cpu_to_le32(F2FS_I(inode)->i_current_depth);
645 else if (S_ISREG(inode->i_mode))
646 ri->i_gc_failures =
647 cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]);
648 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
649 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
650 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
651 ri->i_generation = cpu_to_le32(inode->i_generation);
652 ri->i_dir_level = F2FS_I(inode)->i_dir_level;
653
654 if (f2fs_has_extra_attr(inode)) {
655 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
656
657 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)))
658 ri->i_inline_xattr_size =
659 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
660
661 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) &&
662 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
663 i_projid)) {
664 projid_t i_projid;
665
666 i_projid = from_kprojid(&init_user_ns,
667 F2FS_I(inode)->i_projid);
668 ri->i_projid = cpu_to_le32(i_projid);
669 }
670
671 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
672 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
673 i_crtime)) {
674 ri->i_crtime =
675 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
676 ri->i_crtime_nsec =
677 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
678 }
679
680 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) &&
681 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
682 i_log_cluster_size)) {
683 ri->i_compr_blocks =
684 cpu_to_le64(atomic_read(
685 &F2FS_I(inode)->i_compr_blocks));
686 ri->i_compress_algorithm =
687 F2FS_I(inode)->i_compress_algorithm;
688 ri->i_compress_flag =
689 cpu_to_le16(F2FS_I(inode)->i_compress_flag);
690 ri->i_log_cluster_size =
691 F2FS_I(inode)->i_log_cluster_size;
692 }
693 }
694
695 __set_inode_rdev(inode, ri);
696
697 /* deleted inode */
698 if (inode->i_nlink == 0)
699 clear_page_private_inline(node_page);
700
701 init_idisk_time(inode);
702 #ifdef CONFIG_F2FS_CHECK_FS
703 f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);
704 #endif
705 }
706
f2fs_update_inode_page(struct inode * inode)707 void f2fs_update_inode_page(struct inode *inode)
708 {
709 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
710 struct page *node_page;
711 retry:
712 node_page = f2fs_get_node_page(sbi, inode->i_ino);
713 if (IS_ERR(node_page)) {
714 int err = PTR_ERR(node_page);
715
716 if (err == -ENOMEM) {
717 cond_resched();
718 goto retry;
719 } else if (err != -ENOENT) {
720 f2fs_stop_checkpoint(sbi, false,
721 STOP_CP_REASON_UPDATE_INODE);
722 }
723 return;
724 }
725 f2fs_update_inode(inode, node_page);
726 f2fs_put_page(node_page, 1);
727 }
728
f2fs_write_inode(struct inode * inode,struct writeback_control * wbc)729 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
730 {
731 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
732
733 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
734 inode->i_ino == F2FS_META_INO(sbi))
735 return 0;
736
737 /*
738 * atime could be updated without dirtying f2fs inode in lazytime mode
739 */
740 if (f2fs_is_time_consistent(inode) &&
741 !is_inode_flag_set(inode, FI_DIRTY_INODE))
742 return 0;
743
744 if (!f2fs_is_checkpoint_ready(sbi))
745 return -ENOSPC;
746
747 /*
748 * We need to balance fs here to prevent from producing dirty node pages
749 * during the urgent cleaning time when running out of free sections.
750 */
751 f2fs_update_inode_page(inode);
752 if (wbc && wbc->nr_to_write)
753 f2fs_balance_fs(sbi, true);
754 return 0;
755 }
756
757 /*
758 * Called at the last iput() if i_nlink is zero
759 */
f2fs_evict_inode(struct inode * inode)760 void f2fs_evict_inode(struct inode *inode)
761 {
762 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
763 nid_t xnid = F2FS_I(inode)->i_xattr_nid;
764 int err = 0;
765
766 f2fs_abort_atomic_write(inode, true);
767
768 trace_f2fs_evict_inode(inode);
769 truncate_inode_pages_final(&inode->i_data);
770
771 if ((inode->i_nlink || is_bad_inode(inode)) &&
772 test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode))
773 f2fs_invalidate_compress_pages(sbi, inode->i_ino);
774
775 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
776 inode->i_ino == F2FS_META_INO(sbi) ||
777 inode->i_ino == F2FS_COMPRESS_INO(sbi))
778 goto out_clear;
779
780 f2fs_bug_on(sbi, get_dirty_pages(inode));
781 f2fs_remove_dirty_inode(inode);
782
783 f2fs_destroy_extent_tree(inode);
784
785 if (inode->i_nlink || is_bad_inode(inode))
786 goto no_delete;
787
788 err = f2fs_dquot_initialize(inode);
789 if (err) {
790 err = 0;
791 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
792 }
793
794 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
795 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
796 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
797
798 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING))
799 sb_start_intwrite(inode->i_sb);
800 set_inode_flag(inode, FI_NO_ALLOC);
801 i_size_write(inode, 0);
802 retry:
803 if (F2FS_HAS_BLOCKS(inode))
804 err = f2fs_truncate(inode);
805
806 if (time_to_inject(sbi, FAULT_EVICT_INODE)) {
807 f2fs_show_injection_info(sbi, FAULT_EVICT_INODE);
808 err = -EIO;
809 }
810
811 if (!err) {
812 f2fs_lock_op(sbi);
813 err = f2fs_remove_inode_page(inode);
814 f2fs_unlock_op(sbi);
815 if (err == -ENOENT) {
816 err = 0;
817
818 /*
819 * in fuzzed image, another node may has the same
820 * block address as inode's, if it was truncated
821 * previously, truncation of inode node will fail.
822 */
823 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
824 f2fs_warn(F2FS_I_SB(inode),
825 "f2fs_evict_inode: inconsistent node id, ino:%lu",
826 inode->i_ino);
827 f2fs_inode_synced(inode);
828 set_sbi_flag(sbi, SBI_NEED_FSCK);
829 }
830 }
831 }
832
833 /* give more chances, if ENOMEM case */
834 if (err == -ENOMEM) {
835 err = 0;
836 goto retry;
837 }
838
839 if (err) {
840 f2fs_update_inode_page(inode);
841 if (dquot_initialize_needed(inode))
842 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
843 }
844 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING))
845 sb_end_intwrite(inode->i_sb);
846 no_delete:
847 dquot_drop(inode);
848
849 stat_dec_inline_xattr(inode);
850 stat_dec_inline_dir(inode);
851 stat_dec_inline_inode(inode);
852 stat_dec_compr_inode(inode);
853 stat_sub_compr_blocks(inode,
854 atomic_read(&F2FS_I(inode)->i_compr_blocks));
855
856 if (likely(!f2fs_cp_error(sbi) &&
857 !is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
858 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
859 else
860 f2fs_inode_synced(inode);
861
862 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */
863 if (inode->i_ino)
864 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
865 inode->i_ino);
866 if (xnid)
867 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
868 if (inode->i_nlink) {
869 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
870 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);
871 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
872 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
873 }
874 if (is_inode_flag_set(inode, FI_FREE_NID)) {
875 f2fs_alloc_nid_failed(sbi, inode->i_ino);
876 clear_inode_flag(inode, FI_FREE_NID);
877 } else {
878 /*
879 * If xattr nid is corrupted, we can reach out error condition,
880 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).
881 * In that case, f2fs_check_nid_range() is enough to give a clue.
882 */
883 }
884 out_clear:
885 fscrypt_put_encryption_info(inode);
886 fsverity_cleanup_inode(inode);
887 clear_inode(inode);
888 }
889
890 /* caller should call f2fs_lock_op() */
f2fs_handle_failed_inode(struct inode * inode)891 void f2fs_handle_failed_inode(struct inode *inode)
892 {
893 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
894 struct node_info ni;
895 int err;
896
897 /*
898 * clear nlink of inode in order to release resource of inode
899 * immediately.
900 */
901 clear_nlink(inode);
902
903 /*
904 * we must call this to avoid inode being remained as dirty, resulting
905 * in a panic when flushing dirty inodes in gdirty_list.
906 */
907 f2fs_update_inode_page(inode);
908 f2fs_inode_synced(inode);
909
910 /* don't make bad inode, since it becomes a regular file. */
911 unlock_new_inode(inode);
912
913 /*
914 * Note: we should add inode to orphan list before f2fs_unlock_op()
915 * so we can prevent losing this orphan when encoutering checkpoint
916 * and following suddenly power-off.
917 */
918 err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false);
919 if (err) {
920 set_sbi_flag(sbi, SBI_NEED_FSCK);
921 set_inode_flag(inode, FI_FREE_NID);
922 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix.");
923 goto out;
924 }
925
926 if (ni.blk_addr != NULL_ADDR) {
927 err = f2fs_acquire_orphan_inode(sbi);
928 if (err) {
929 set_sbi_flag(sbi, SBI_NEED_FSCK);
930 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix.");
931 } else {
932 f2fs_add_orphan_inode(inode);
933 }
934 f2fs_alloc_nid_done(sbi, inode->i_ino);
935 } else {
936 set_inode_flag(inode, FI_FREE_NID);
937 }
938
939 out:
940 f2fs_unlock_op(sbi);
941
942 /* iput will drop the inode object */
943 iput(inode);
944 }
945