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 return -EFSCORRUPTED;
86 return 0;
87 }
88
__set_inode_rdev(struct inode * inode,struct f2fs_inode * ri)89 static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
90 {
91 int extra_size = get_extra_isize(inode);
92
93 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
94 if (old_valid_dev(inode->i_rdev)) {
95 ri->i_addr[extra_size] =
96 cpu_to_le32(old_encode_dev(inode->i_rdev));
97 ri->i_addr[extra_size + 1] = 0;
98 } else {
99 ri->i_addr[extra_size] = 0;
100 ri->i_addr[extra_size + 1] =
101 cpu_to_le32(new_encode_dev(inode->i_rdev));
102 ri->i_addr[extra_size + 2] = 0;
103 }
104 }
105 }
106
__recover_inline_status(struct inode * inode,struct page * ipage)107 static void __recover_inline_status(struct inode *inode, struct page *ipage)
108 {
109 void *inline_data = inline_data_addr(inode, ipage);
110 __le32 *start = inline_data;
111 __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);
112
113 while (start < end) {
114 if (*start++) {
115 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
116
117 set_inode_flag(inode, FI_DATA_EXIST);
118 set_raw_inline(inode, F2FS_INODE(ipage));
119 set_page_dirty(ipage);
120 return;
121 }
122 }
123 return;
124 }
125
f2fs_enable_inode_chksum(struct f2fs_sb_info * sbi,struct page * page)126 static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
127 {
128 struct f2fs_inode *ri = &F2FS_NODE(page)->i;
129
130 if (!f2fs_sb_has_inode_chksum(sbi))
131 return false;
132
133 if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR))
134 return false;
135
136 if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize),
137 i_inode_checksum))
138 return false;
139
140 return true;
141 }
142
f2fs_inode_chksum(struct f2fs_sb_info * sbi,struct page * page)143 static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
144 {
145 struct f2fs_node *node = F2FS_NODE(page);
146 struct f2fs_inode *ri = &node->i;
147 __le32 ino = node->footer.ino;
148 __le32 gen = ri->i_generation;
149 __u32 chksum, chksum_seed;
150 __u32 dummy_cs = 0;
151 unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum);
152 unsigned int cs_size = sizeof(dummy_cs);
153
154 chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino,
155 sizeof(ino));
156 chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen));
157
158 chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset);
159 chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size);
160 offset += cs_size;
161 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset,
162 F2FS_BLKSIZE - offset);
163 return chksum;
164 }
165
f2fs_inode_chksum_verify(struct f2fs_sb_info * sbi,struct page * page)166 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)
167 {
168 struct f2fs_inode *ri;
169 __u32 provided, calculated;
170
171 if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)))
172 return true;
173
174 #ifdef CONFIG_F2FS_CHECK_FS
175 if (!f2fs_enable_inode_chksum(sbi, page))
176 #else
177 if (!f2fs_enable_inode_chksum(sbi, page) ||
178 PageDirty(page) || PageWriteback(page))
179 #endif
180 return true;
181
182 ri = &F2FS_NODE(page)->i;
183 provided = le32_to_cpu(ri->i_inode_checksum);
184 calculated = f2fs_inode_chksum(sbi, page);
185
186 if (provided != calculated)
187 f2fs_warn(sbi, "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x",
188 page->index, ino_of_node(page), provided, calculated);
189
190 return provided == calculated;
191 }
192
f2fs_inode_chksum_set(struct f2fs_sb_info * sbi,struct page * page)193 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page)
194 {
195 struct f2fs_inode *ri = &F2FS_NODE(page)->i;
196
197 if (!f2fs_enable_inode_chksum(sbi, page))
198 return;
199
200 ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page));
201 }
202
sanity_check_inode(struct inode * inode,struct page * node_page)203 static bool sanity_check_inode(struct inode *inode, struct page *node_page)
204 {
205 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
206 struct f2fs_inode_info *fi = F2FS_I(inode);
207 struct f2fs_inode *ri = F2FS_INODE(node_page);
208 unsigned long long iblocks;
209
210 iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks);
211 if (!iblocks) {
212 set_sbi_flag(sbi, SBI_NEED_FSCK);
213 f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.",
214 __func__, inode->i_ino, iblocks);
215 return false;
216 }
217
218 if (ino_of_node(node_page) != nid_of_node(node_page)) {
219 set_sbi_flag(sbi, SBI_NEED_FSCK);
220 f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.",
221 __func__, inode->i_ino,
222 ino_of_node(node_page), nid_of_node(node_page));
223 return false;
224 }
225
226 if (f2fs_sb_has_flexible_inline_xattr(sbi)
227 && !f2fs_has_extra_attr(inode)) {
228 set_sbi_flag(sbi, SBI_NEED_FSCK);
229 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, run fsck to fix.",
230 __func__, inode->i_ino);
231 return false;
232 }
233
234 if (f2fs_has_extra_attr(inode) &&
235 !f2fs_sb_has_extra_attr(sbi)) {
236 set_sbi_flag(sbi, SBI_NEED_FSCK);
237 f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off",
238 __func__, inode->i_ino);
239 return false;
240 }
241
242 if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE ||
243 fi->i_extra_isize % sizeof(__le32)) {
244 set_sbi_flag(sbi, SBI_NEED_FSCK);
245 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu",
246 __func__, inode->i_ino, fi->i_extra_isize,
247 F2FS_TOTAL_EXTRA_ATTR_SIZE);
248 return false;
249 }
250
251 if (f2fs_has_extra_attr(inode) &&
252 f2fs_sb_has_flexible_inline_xattr(sbi) &&
253 f2fs_has_inline_xattr(inode) &&
254 (!fi->i_inline_xattr_size ||
255 fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) {
256 set_sbi_flag(sbi, SBI_NEED_FSCK);
257 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %zu",
258 __func__, inode->i_ino, fi->i_inline_xattr_size,
259 MAX_INLINE_XATTR_SIZE);
260 return false;
261 }
262
263 if (fi->extent_tree[EX_READ]) {
264 struct extent_info *ei = &fi->extent_tree[EX_READ]->largest;
265
266 if (ei->len &&
267 (!f2fs_is_valid_blkaddr(sbi, ei->blk,
268 DATA_GENERIC_ENHANCE) ||
269 !f2fs_is_valid_blkaddr(sbi, ei->blk + ei->len - 1,
270 DATA_GENERIC_ENHANCE))) {
271 set_sbi_flag(sbi, SBI_NEED_FSCK);
272 f2fs_warn(sbi, "%s: inode (ino=%lx) extent info [%u, %u, %u] is incorrect, run fsck to fix",
273 __func__, inode->i_ino,
274 ei->blk, ei->fofs, ei->len);
275 return false;
276 }
277 }
278
279 if (f2fs_sanity_check_inline_data(inode)) {
280 set_sbi_flag(sbi, SBI_NEED_FSCK);
281 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix",
282 __func__, inode->i_ino, inode->i_mode);
283 return false;
284 }
285
286 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
287 set_sbi_flag(sbi, SBI_NEED_FSCK);
288 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix",
289 __func__, inode->i_ino, inode->i_mode);
290 return false;
291 }
292
293 if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) {
294 set_sbi_flag(sbi, SBI_NEED_FSCK);
295 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off",
296 __func__, inode->i_ino);
297 return false;
298 }
299
300 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
301 fi->i_flags & F2FS_COMPR_FL &&
302 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
303 i_log_cluster_size)) {
304 if (ri->i_compress_algorithm >= COMPRESS_MAX) {
305 set_sbi_flag(sbi, SBI_NEED_FSCK);
306 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
307 "compress algorithm: %u, run fsck to fix",
308 __func__, inode->i_ino,
309 ri->i_compress_algorithm);
310 return false;
311 }
312 if (le64_to_cpu(ri->i_compr_blocks) >
313 SECTOR_TO_BLOCK(inode->i_blocks)) {
314 set_sbi_flag(sbi, SBI_NEED_FSCK);
315 f2fs_warn(sbi, "%s: inode (ino=%lx) has inconsistent "
316 "i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix",
317 __func__, inode->i_ino,
318 le64_to_cpu(ri->i_compr_blocks),
319 SECTOR_TO_BLOCK(inode->i_blocks));
320 return false;
321 }
322 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
323 ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) {
324 set_sbi_flag(sbi, SBI_NEED_FSCK);
325 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
326 "log cluster size: %u, run fsck to fix",
327 __func__, inode->i_ino,
328 ri->i_log_cluster_size);
329 return false;
330 }
331 }
332
333 return true;
334 }
335
do_read_inode(struct inode * inode)336 static int do_read_inode(struct inode *inode)
337 {
338 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
339 struct f2fs_inode_info *fi = F2FS_I(inode);
340 struct page *node_page;
341 struct f2fs_inode *ri;
342 projid_t i_projid;
343 int err;
344
345 /* Check if ino is within scope */
346 if (f2fs_check_nid_range(sbi, inode->i_ino))
347 return -EINVAL;
348
349 node_page = f2fs_get_node_page(sbi, inode->i_ino);
350 if (IS_ERR(node_page))
351 return PTR_ERR(node_page);
352
353 ri = F2FS_INODE(node_page);
354
355 inode->i_mode = le16_to_cpu(ri->i_mode);
356 i_uid_write(inode, le32_to_cpu(ri->i_uid));
357 i_gid_write(inode, le32_to_cpu(ri->i_gid));
358 set_nlink(inode, le32_to_cpu(ri->i_links));
359 inode->i_size = le64_to_cpu(ri->i_size);
360 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
361
362 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
363 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
364 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
365 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
366 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
367 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
368 inode->i_generation = le32_to_cpu(ri->i_generation);
369 if (S_ISDIR(inode->i_mode))
370 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
371 else if (S_ISREG(inode->i_mode))
372 fi->i_gc_failures[GC_FAILURE_PIN] =
373 le16_to_cpu(ri->i_gc_failures);
374 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
375 fi->i_flags = le32_to_cpu(ri->i_flags);
376 if (S_ISREG(inode->i_mode))
377 fi->i_flags &= ~F2FS_PROJINHERIT_FL;
378 bitmap_zero(fi->flags, FI_MAX);
379 fi->i_advise = ri->i_advise;
380 fi->i_pino = le32_to_cpu(ri->i_pino);
381 fi->i_dir_level = ri->i_dir_level;
382
383 get_inline_info(inode, ri);
384
385 fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
386 le16_to_cpu(ri->i_extra_isize) : 0;
387
388 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
389 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
390 } else if (f2fs_has_inline_xattr(inode) ||
391 f2fs_has_inline_dentry(inode)) {
392 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
393 } else {
394
395 /*
396 * Previous inline data or directory always reserved 200 bytes
397 * in inode layout, even if inline_xattr is disabled. In order
398 * to keep inline_dentry's structure for backward compatibility,
399 * we get the space back only from inline_data.
400 */
401 fi->i_inline_xattr_size = 0;
402 }
403
404 /* check data exist */
405 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
406 __recover_inline_status(inode, node_page);
407
408 /* try to recover cold bit for non-dir inode */
409 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) {
410 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
411 set_cold_node(node_page, false);
412 set_page_dirty(node_page);
413 }
414
415 /* get rdev by using inline_info */
416 __get_inode_rdev(inode, ri);
417
418 if (S_ISREG(inode->i_mode)) {
419 err = __written_first_block(sbi, ri);
420 if (err < 0) {
421 f2fs_put_page(node_page, 1);
422 return err;
423 }
424 if (!err)
425 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
426 }
427
428 if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
429 fi->last_disk_size = inode->i_size;
430
431 if (fi->i_flags & F2FS_PROJINHERIT_FL)
432 set_inode_flag(inode, FI_PROJ_INHERIT);
433
434 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) &&
435 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
436 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
437 else
438 i_projid = F2FS_DEF_PROJID;
439 fi->i_projid = make_kprojid(&init_user_ns, i_projid);
440
441 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) &&
442 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
443 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
444 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
445 }
446
447 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
448 (fi->i_flags & F2FS_COMPR_FL)) {
449 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
450 i_log_cluster_size)) {
451 atomic_set(&fi->i_compr_blocks,
452 le64_to_cpu(ri->i_compr_blocks));
453 fi->i_compress_algorithm = ri->i_compress_algorithm;
454 fi->i_log_cluster_size = ri->i_log_cluster_size;
455 fi->i_compress_flag = le16_to_cpu(ri->i_compress_flag);
456 fi->i_cluster_size = 1 << fi->i_log_cluster_size;
457 set_inode_flag(inode, FI_COMPRESSED_FILE);
458 }
459 }
460
461 F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
462 F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
463 F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
464 F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
465
466 /* Need all the flag bits */
467 f2fs_init_read_extent_tree(inode, node_page);
468 f2fs_init_age_extent_tree(inode);
469
470 if (!sanity_check_inode(inode, node_page)) {
471 f2fs_put_page(node_page, 1);
472 return -EFSCORRUPTED;
473 }
474
475 f2fs_put_page(node_page, 1);
476
477 stat_inc_inline_xattr(inode);
478 stat_inc_inline_inode(inode);
479 stat_inc_inline_dir(inode);
480 stat_inc_compr_inode(inode);
481 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks));
482
483 return 0;
484 }
485
f2fs_iget(struct super_block * sb,unsigned long ino)486 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
487 {
488 struct f2fs_sb_info *sbi = F2FS_SB(sb);
489 struct inode *inode;
490 int ret = 0;
491
492 inode = iget_locked(sb, ino);
493 if (!inode)
494 return ERR_PTR(-ENOMEM);
495
496 if (!(inode->i_state & I_NEW)) {
497 trace_f2fs_iget(inode);
498 return inode;
499 }
500 if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
501 goto make_now;
502
503 #ifdef CONFIG_F2FS_FS_COMPRESSION
504 if (ino == F2FS_COMPRESS_INO(sbi))
505 goto make_now;
506 #endif
507
508 ret = do_read_inode(inode);
509 if (ret)
510 goto bad_inode;
511 make_now:
512 if (ino == F2FS_NODE_INO(sbi)) {
513 inode->i_mapping->a_ops = &f2fs_node_aops;
514 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
515 } else if (ino == F2FS_META_INO(sbi)) {
516 inode->i_mapping->a_ops = &f2fs_meta_aops;
517 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
518 } else if (ino == F2FS_COMPRESS_INO(sbi)) {
519 #ifdef CONFIG_F2FS_FS_COMPRESSION
520 inode->i_mapping->a_ops = &f2fs_compress_aops;
521 #endif
522 mapping_set_gfp_mask(inode->i_mapping,
523 GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE);
524 } else if (S_ISREG(inode->i_mode)) {
525 inode->i_op = &f2fs_file_inode_operations;
526 inode->i_fop = &f2fs_file_operations;
527 inode->i_mapping->a_ops = &f2fs_dblock_aops;
528 } else if (S_ISDIR(inode->i_mode)) {
529 inode->i_op = &f2fs_dir_inode_operations;
530 inode->i_fop = &f2fs_dir_operations;
531 inode->i_mapping->a_ops = &f2fs_dblock_aops;
532 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
533 } else if (S_ISLNK(inode->i_mode)) {
534 if (file_is_encrypt(inode))
535 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
536 else
537 inode->i_op = &f2fs_symlink_inode_operations;
538 inode_nohighmem(inode);
539 inode->i_mapping->a_ops = &f2fs_dblock_aops;
540 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
541 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
542 inode->i_op = &f2fs_special_inode_operations;
543 init_special_inode(inode, inode->i_mode, inode->i_rdev);
544 } else {
545 ret = -EIO;
546 goto bad_inode;
547 }
548 f2fs_set_inode_flags(inode);
549 unlock_new_inode(inode);
550 trace_f2fs_iget(inode);
551 return inode;
552
553 bad_inode:
554 f2fs_inode_synced(inode);
555 iget_failed(inode);
556 trace_f2fs_iget_exit(inode, ret);
557 return ERR_PTR(ret);
558 }
559
f2fs_iget_retry(struct super_block * sb,unsigned long ino)560 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
561 {
562 struct inode *inode;
563 retry:
564 inode = f2fs_iget(sb, ino);
565 if (IS_ERR(inode)) {
566 if (PTR_ERR(inode) == -ENOMEM) {
567 congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
568 goto retry;
569 }
570 }
571 return inode;
572 }
573
f2fs_update_inode(struct inode * inode,struct page * node_page)574 void f2fs_update_inode(struct inode *inode, struct page *node_page)
575 {
576 struct f2fs_inode *ri;
577 struct extent_tree *et = F2FS_I(inode)->extent_tree[EX_READ];
578
579 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
580 set_page_dirty(node_page);
581
582 f2fs_inode_synced(inode);
583
584 ri = F2FS_INODE(node_page);
585
586 ri->i_mode = cpu_to_le16(inode->i_mode);
587 ri->i_advise = F2FS_I(inode)->i_advise;
588 ri->i_uid = cpu_to_le32(i_uid_read(inode));
589 ri->i_gid = cpu_to_le32(i_gid_read(inode));
590 ri->i_links = cpu_to_le32(inode->i_nlink);
591 ri->i_size = cpu_to_le64(i_size_read(inode));
592 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
593
594 if (et) {
595 read_lock(&et->lock);
596 set_raw_read_extent(&et->largest, &ri->i_ext);
597 read_unlock(&et->lock);
598 } else {
599 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
600 }
601 set_raw_inline(inode, ri);
602
603 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
604 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
605 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
606 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
607 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
608 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
609 if (S_ISDIR(inode->i_mode))
610 ri->i_current_depth =
611 cpu_to_le32(F2FS_I(inode)->i_current_depth);
612 else if (S_ISREG(inode->i_mode))
613 ri->i_gc_failures =
614 cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]);
615 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
616 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
617 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
618 ri->i_generation = cpu_to_le32(inode->i_generation);
619 ri->i_dir_level = F2FS_I(inode)->i_dir_level;
620
621 if (f2fs_has_extra_attr(inode)) {
622 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
623
624 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)))
625 ri->i_inline_xattr_size =
626 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
627
628 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) &&
629 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
630 i_projid)) {
631 projid_t i_projid;
632
633 i_projid = from_kprojid(&init_user_ns,
634 F2FS_I(inode)->i_projid);
635 ri->i_projid = cpu_to_le32(i_projid);
636 }
637
638 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
639 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
640 i_crtime)) {
641 ri->i_crtime =
642 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
643 ri->i_crtime_nsec =
644 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
645 }
646
647 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) &&
648 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
649 i_log_cluster_size)) {
650 ri->i_compr_blocks =
651 cpu_to_le64(atomic_read(
652 &F2FS_I(inode)->i_compr_blocks));
653 ri->i_compress_algorithm =
654 F2FS_I(inode)->i_compress_algorithm;
655 ri->i_compress_flag =
656 cpu_to_le16(F2FS_I(inode)->i_compress_flag);
657 ri->i_log_cluster_size =
658 F2FS_I(inode)->i_log_cluster_size;
659 }
660 }
661
662 __set_inode_rdev(inode, ri);
663
664 /* deleted inode */
665 if (inode->i_nlink == 0)
666 clear_page_private_inline(node_page);
667
668 F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
669 F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
670 F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
671 F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
672
673 #ifdef CONFIG_F2FS_CHECK_FS
674 f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);
675 #endif
676 }
677
f2fs_update_inode_page(struct inode * inode)678 void f2fs_update_inode_page(struct inode *inode)
679 {
680 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
681 struct page *node_page;
682 retry:
683 node_page = f2fs_get_node_page(sbi, inode->i_ino);
684 if (IS_ERR(node_page)) {
685 int err = PTR_ERR(node_page);
686
687 if (err == -ENOMEM) {
688 cond_resched();
689 goto retry;
690 } else if (err != -ENOENT) {
691 f2fs_stop_checkpoint(sbi, false,
692 STOP_CP_REASON_UPDATE_INODE);
693 }
694 return;
695 }
696 f2fs_update_inode(inode, node_page);
697 f2fs_put_page(node_page, 1);
698 }
699
f2fs_write_inode(struct inode * inode,struct writeback_control * wbc)700 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
701 {
702 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
703
704 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
705 inode->i_ino == F2FS_META_INO(sbi))
706 return 0;
707
708 /*
709 * atime could be updated without dirtying f2fs inode in lazytime mode
710 */
711 if (f2fs_is_time_consistent(inode) &&
712 !is_inode_flag_set(inode, FI_DIRTY_INODE))
713 return 0;
714
715 if (!f2fs_is_checkpoint_ready(sbi))
716 return -ENOSPC;
717
718 /*
719 * We need to balance fs here to prevent from producing dirty node pages
720 * during the urgent cleaning time when running out of free sections.
721 */
722 f2fs_update_inode_page(inode);
723 if (wbc && wbc->nr_to_write)
724 f2fs_balance_fs(sbi, true);
725 return 0;
726 }
727
728 /*
729 * Called at the last iput() if i_nlink is zero
730 */
f2fs_evict_inode(struct inode * inode)731 void f2fs_evict_inode(struct inode *inode)
732 {
733 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
734 nid_t xnid = F2FS_I(inode)->i_xattr_nid;
735 int err = 0;
736
737 /* some remained atomic pages should discarded */
738 if (f2fs_is_atomic_file(inode))
739 f2fs_drop_inmem_pages(inode);
740
741 trace_f2fs_evict_inode(inode);
742 truncate_inode_pages_final(&inode->i_data);
743
744 if (test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode))
745 f2fs_invalidate_compress_pages(sbi, inode->i_ino);
746
747 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
748 inode->i_ino == F2FS_META_INO(sbi) ||
749 inode->i_ino == F2FS_COMPRESS_INO(sbi))
750 goto out_clear;
751
752 f2fs_bug_on(sbi, get_dirty_pages(inode));
753 f2fs_remove_dirty_inode(inode);
754
755 f2fs_destroy_extent_tree(inode);
756
757 if (inode->i_nlink || is_bad_inode(inode))
758 goto no_delete;
759
760 err = dquot_initialize(inode);
761 if (err) {
762 err = 0;
763 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
764 }
765
766 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
767 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
768 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
769
770 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING))
771 sb_start_intwrite(inode->i_sb);
772 set_inode_flag(inode, FI_NO_ALLOC);
773 i_size_write(inode, 0);
774 retry:
775 if (F2FS_HAS_BLOCKS(inode))
776 err = f2fs_truncate(inode);
777
778 if (time_to_inject(sbi, FAULT_EVICT_INODE)) {
779 f2fs_show_injection_info(sbi, FAULT_EVICT_INODE);
780 err = -EIO;
781 }
782
783 if (!err) {
784 f2fs_lock_op(sbi);
785 err = f2fs_remove_inode_page(inode);
786 f2fs_unlock_op(sbi);
787 if (err == -ENOENT) {
788 err = 0;
789
790 /*
791 * in fuzzed image, another node may has the same
792 * block address as inode's, if it was truncated
793 * previously, truncation of inode node will fail.
794 */
795 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
796 f2fs_warn(F2FS_I_SB(inode),
797 "f2fs_evict_inode: inconsistent node id, ino:%lu",
798 inode->i_ino);
799 f2fs_inode_synced(inode);
800 set_sbi_flag(sbi, SBI_NEED_FSCK);
801 }
802 }
803 }
804
805 /* give more chances, if ENOMEM case */
806 if (err == -ENOMEM) {
807 err = 0;
808 goto retry;
809 }
810
811 if (err) {
812 f2fs_update_inode_page(inode);
813 if (dquot_initialize_needed(inode))
814 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
815 }
816 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING))
817 sb_end_intwrite(inode->i_sb);
818 no_delete:
819 dquot_drop(inode);
820
821 stat_dec_inline_xattr(inode);
822 stat_dec_inline_dir(inode);
823 stat_dec_inline_inode(inode);
824 stat_dec_compr_inode(inode);
825 stat_sub_compr_blocks(inode,
826 atomic_read(&F2FS_I(inode)->i_compr_blocks));
827
828 if (likely(!f2fs_cp_error(sbi) &&
829 !is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
830 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
831 else
832 f2fs_inode_synced(inode);
833
834 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */
835 if (inode->i_ino)
836 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
837 inode->i_ino);
838 if (xnid)
839 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
840 if (inode->i_nlink) {
841 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
842 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);
843 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
844 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
845 }
846 if (is_inode_flag_set(inode, FI_FREE_NID)) {
847 f2fs_alloc_nid_failed(sbi, inode->i_ino);
848 clear_inode_flag(inode, FI_FREE_NID);
849 } else {
850 /*
851 * If xattr nid is corrupted, we can reach out error condition,
852 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).
853 * In that case, f2fs_check_nid_range() is enough to give a clue.
854 */
855 }
856 out_clear:
857 fscrypt_put_encryption_info(inode);
858 fsverity_cleanup_inode(inode);
859 clear_inode(inode);
860 }
861
862 /* caller should call f2fs_lock_op() */
f2fs_handle_failed_inode(struct inode * inode)863 void f2fs_handle_failed_inode(struct inode *inode)
864 {
865 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
866 struct node_info ni;
867 int err;
868
869 /*
870 * clear nlink of inode in order to release resource of inode
871 * immediately.
872 */
873 clear_nlink(inode);
874
875 /*
876 * we must call this to avoid inode being remained as dirty, resulting
877 * in a panic when flushing dirty inodes in gdirty_list.
878 */
879 f2fs_update_inode_page(inode);
880 f2fs_inode_synced(inode);
881
882 /* don't make bad inode, since it becomes a regular file. */
883 unlock_new_inode(inode);
884
885 /*
886 * Note: we should add inode to orphan list before f2fs_unlock_op()
887 * so we can prevent losing this orphan when encoutering checkpoint
888 * and following suddenly power-off.
889 */
890 err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false);
891 if (err) {
892 set_sbi_flag(sbi, SBI_NEED_FSCK);
893 set_inode_flag(inode, FI_FREE_NID);
894 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix.");
895 goto out;
896 }
897
898 if (ni.blk_addr != NULL_ADDR) {
899 err = f2fs_acquire_orphan_inode(sbi);
900 if (err) {
901 set_sbi_flag(sbi, SBI_NEED_FSCK);
902 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix.");
903 } else {
904 f2fs_add_orphan_inode(inode);
905 }
906 f2fs_alloc_nid_done(sbi, inode->i_ino);
907 } else {
908 set_inode_flag(inode, FI_FREE_NID);
909 }
910
911 out:
912 f2fs_unlock_op(sbi);
913
914 /* iput will drop the inode object */
915 iput(inode);
916 }
917