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
f2fs_mark_inode_dirty_sync(struct inode * inode,bool sync)21 void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync)
22 {
23 if (is_inode_flag_set(inode, FI_NEW_INODE))
24 return;
25
26 if (f2fs_inode_dirtied(inode, sync))
27 return;
28
29 mark_inode_dirty_sync(inode);
30 }
31
f2fs_set_inode_flags(struct inode * inode)32 void f2fs_set_inode_flags(struct inode *inode)
33 {
34 unsigned int flags = F2FS_I(inode)->i_flags;
35 unsigned int new_fl = 0;
36
37 if (flags & F2FS_SYNC_FL)
38 new_fl |= S_SYNC;
39 if (flags & F2FS_APPEND_FL)
40 new_fl |= S_APPEND;
41 if (flags & F2FS_IMMUTABLE_FL)
42 new_fl |= S_IMMUTABLE;
43 if (flags & F2FS_NOATIME_FL)
44 new_fl |= S_NOATIME;
45 if (flags & F2FS_DIRSYNC_FL)
46 new_fl |= S_DIRSYNC;
47 if (file_is_encrypt(inode))
48 new_fl |= S_ENCRYPTED;
49 if (file_is_verity(inode))
50 new_fl |= S_VERITY;
51 if (flags & F2FS_CASEFOLD_FL)
52 new_fl |= S_CASEFOLD;
53 inode_set_flags(inode, new_fl,
54 S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|
55 S_ENCRYPTED|S_VERITY|S_CASEFOLD);
56 }
57
__get_inode_rdev(struct inode * inode,struct f2fs_inode * ri)58 static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
59 {
60 int extra_size = get_extra_isize(inode);
61
62 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
63 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
64 if (ri->i_addr[extra_size])
65 inode->i_rdev = old_decode_dev(
66 le32_to_cpu(ri->i_addr[extra_size]));
67 else
68 inode->i_rdev = new_decode_dev(
69 le32_to_cpu(ri->i_addr[extra_size + 1]));
70 }
71 }
72
__written_first_block(struct f2fs_sb_info * sbi,struct f2fs_inode * ri)73 static int __written_first_block(struct f2fs_sb_info *sbi,
74 struct f2fs_inode *ri)
75 {
76 block_t addr = le32_to_cpu(ri->i_addr[offset_in_addr(ri)]);
77
78 if (!__is_valid_data_blkaddr(addr))
79 return 1;
80 if (!f2fs_is_valid_blkaddr(sbi, addr, DATA_GENERIC_ENHANCE))
81 return -EFSCORRUPTED;
82 return 0;
83 }
84
__set_inode_rdev(struct inode * inode,struct f2fs_inode * ri)85 static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
86 {
87 int extra_size = get_extra_isize(inode);
88
89 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
90 if (old_valid_dev(inode->i_rdev)) {
91 ri->i_addr[extra_size] =
92 cpu_to_le32(old_encode_dev(inode->i_rdev));
93 ri->i_addr[extra_size + 1] = 0;
94 } else {
95 ri->i_addr[extra_size] = 0;
96 ri->i_addr[extra_size + 1] =
97 cpu_to_le32(new_encode_dev(inode->i_rdev));
98 ri->i_addr[extra_size + 2] = 0;
99 }
100 }
101 }
102
__recover_inline_status(struct inode * inode,struct page * ipage)103 static void __recover_inline_status(struct inode *inode, struct page *ipage)
104 {
105 void *inline_data = inline_data_addr(inode, ipage);
106 __le32 *start = inline_data;
107 __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);
108
109 while (start < end) {
110 if (*start++) {
111 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
112
113 set_inode_flag(inode, FI_DATA_EXIST);
114 set_raw_inline(inode, F2FS_INODE(ipage));
115 set_page_dirty(ipage);
116 return;
117 }
118 }
119 return;
120 }
121
f2fs_enable_inode_chksum(struct f2fs_sb_info * sbi,struct page * page)122 static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
123 {
124 struct f2fs_inode *ri = &F2FS_NODE(page)->i;
125
126 if (!f2fs_sb_has_inode_chksum(sbi))
127 return false;
128
129 if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR))
130 return false;
131
132 if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize),
133 i_inode_checksum))
134 return false;
135
136 return true;
137 }
138
f2fs_inode_chksum(struct f2fs_sb_info * sbi,struct page * page)139 static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
140 {
141 struct f2fs_node *node = F2FS_NODE(page);
142 struct f2fs_inode *ri = &node->i;
143 __le32 ino = node->footer.ino;
144 __le32 gen = ri->i_generation;
145 __u32 chksum, chksum_seed;
146 __u32 dummy_cs = 0;
147 unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum);
148 unsigned int cs_size = sizeof(dummy_cs);
149
150 chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino,
151 sizeof(ino));
152 chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen));
153
154 chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset);
155 chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size);
156 offset += cs_size;
157 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset,
158 F2FS_BLKSIZE - offset);
159 return chksum;
160 }
161
f2fs_inode_chksum_verify(struct f2fs_sb_info * sbi,struct page * page)162 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)
163 {
164 struct f2fs_inode *ri;
165 __u32 provided, calculated;
166
167 if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)))
168 return true;
169
170 #ifdef CONFIG_F2FS_CHECK_FS
171 if (!f2fs_enable_inode_chksum(sbi, page))
172 #else
173 if (!f2fs_enable_inode_chksum(sbi, page) ||
174 PageDirty(page) || PageWriteback(page))
175 #endif
176 return true;
177
178 ri = &F2FS_NODE(page)->i;
179 provided = le32_to_cpu(ri->i_inode_checksum);
180 calculated = f2fs_inode_chksum(sbi, page);
181
182 if (provided != calculated)
183 f2fs_warn(sbi, "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x",
184 page->index, ino_of_node(page), provided, calculated);
185
186 return provided == calculated;
187 }
188
f2fs_inode_chksum_set(struct f2fs_sb_info * sbi,struct page * page)189 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page)
190 {
191 struct f2fs_inode *ri = &F2FS_NODE(page)->i;
192
193 if (!f2fs_enable_inode_chksum(sbi, page))
194 return;
195
196 ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page));
197 }
198
sanity_check_inode(struct inode * inode,struct page * node_page)199 static bool sanity_check_inode(struct inode *inode, struct page *node_page)
200 {
201 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
202 struct f2fs_inode_info *fi = F2FS_I(inode);
203 struct f2fs_inode *ri = F2FS_INODE(node_page);
204 unsigned long long iblocks;
205
206 iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks);
207 if (!iblocks) {
208 set_sbi_flag(sbi, SBI_NEED_FSCK);
209 f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.",
210 __func__, inode->i_ino, iblocks);
211 return false;
212 }
213
214 if (ino_of_node(node_page) != nid_of_node(node_page)) {
215 set_sbi_flag(sbi, SBI_NEED_FSCK);
216 f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.",
217 __func__, inode->i_ino,
218 ino_of_node(node_page), nid_of_node(node_page));
219 return false;
220 }
221
222 if (f2fs_sb_has_flexible_inline_xattr(sbi)
223 && !f2fs_has_extra_attr(inode)) {
224 set_sbi_flag(sbi, SBI_NEED_FSCK);
225 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, run fsck to fix.",
226 __func__, inode->i_ino);
227 return false;
228 }
229
230 if (f2fs_has_extra_attr(inode) &&
231 !f2fs_sb_has_extra_attr(sbi)) {
232 set_sbi_flag(sbi, SBI_NEED_FSCK);
233 f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off",
234 __func__, inode->i_ino);
235 return false;
236 }
237
238 if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE ||
239 fi->i_extra_isize % sizeof(__le32)) {
240 set_sbi_flag(sbi, SBI_NEED_FSCK);
241 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu",
242 __func__, inode->i_ino, fi->i_extra_isize,
243 F2FS_TOTAL_EXTRA_ATTR_SIZE);
244 return false;
245 }
246
247 if (f2fs_has_extra_attr(inode) &&
248 f2fs_sb_has_flexible_inline_xattr(sbi) &&
249 f2fs_has_inline_xattr(inode) &&
250 (!fi->i_inline_xattr_size ||
251 fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) {
252 set_sbi_flag(sbi, SBI_NEED_FSCK);
253 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %zu",
254 __func__, inode->i_ino, fi->i_inline_xattr_size,
255 MAX_INLINE_XATTR_SIZE);
256 return false;
257 }
258
259 if (F2FS_I(inode)->extent_tree) {
260 struct extent_info *ei = &F2FS_I(inode)->extent_tree->largest;
261
262 if (ei->len &&
263 (!f2fs_is_valid_blkaddr(sbi, ei->blk,
264 DATA_GENERIC_ENHANCE) ||
265 !f2fs_is_valid_blkaddr(sbi, ei->blk + ei->len - 1,
266 DATA_GENERIC_ENHANCE))) {
267 set_sbi_flag(sbi, SBI_NEED_FSCK);
268 f2fs_warn(sbi, "%s: inode (ino=%lx) extent info [%u, %u, %u] is incorrect, run fsck to fix",
269 __func__, inode->i_ino,
270 ei->blk, ei->fofs, ei->len);
271 return false;
272 }
273 }
274
275 if (f2fs_sanity_check_inline_data(inode)) {
276 set_sbi_flag(sbi, SBI_NEED_FSCK);
277 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix",
278 __func__, inode->i_ino, inode->i_mode);
279 return false;
280 }
281
282 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
283 set_sbi_flag(sbi, SBI_NEED_FSCK);
284 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix",
285 __func__, inode->i_ino, inode->i_mode);
286 return false;
287 }
288
289 if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) {
290 set_sbi_flag(sbi, SBI_NEED_FSCK);
291 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off",
292 __func__, inode->i_ino);
293 return false;
294 }
295
296 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
297 fi->i_flags & F2FS_COMPR_FL &&
298 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
299 i_log_cluster_size)) {
300 if (ri->i_compress_algorithm >= COMPRESS_MAX) {
301 set_sbi_flag(sbi, SBI_NEED_FSCK);
302 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
303 "compress algorithm: %u, run fsck to fix",
304 __func__, inode->i_ino,
305 ri->i_compress_algorithm);
306 return false;
307 }
308 if (le64_to_cpu(ri->i_compr_blocks) >
309 SECTOR_TO_BLOCK(inode->i_blocks)) {
310 set_sbi_flag(sbi, SBI_NEED_FSCK);
311 f2fs_warn(sbi, "%s: inode (ino=%lx) has inconsistent "
312 "i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix",
313 __func__, inode->i_ino,
314 le64_to_cpu(ri->i_compr_blocks),
315 SECTOR_TO_BLOCK(inode->i_blocks));
316 return false;
317 }
318 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
319 ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) {
320 set_sbi_flag(sbi, SBI_NEED_FSCK);
321 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
322 "log cluster size: %u, run fsck to fix",
323 __func__, inode->i_ino,
324 ri->i_log_cluster_size);
325 return false;
326 }
327 }
328
329 if (fi->i_xattr_nid && f2fs_check_nid_range(sbi, fi->i_xattr_nid)) {
330 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_xattr_nid: %u, run fsck to fix.",
331 __func__, inode->i_ino, fi->i_xattr_nid);
332 return false;
333 }
334
335 return true;
336 }
337
do_read_inode(struct inode * inode)338 static int do_read_inode(struct inode *inode)
339 {
340 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
341 struct f2fs_inode_info *fi = F2FS_I(inode);
342 struct page *node_page;
343 struct f2fs_inode *ri;
344 projid_t i_projid;
345 int err;
346
347 /* Check if ino is within scope */
348 if (f2fs_check_nid_range(sbi, inode->i_ino))
349 return -EINVAL;
350
351 node_page = f2fs_get_node_page(sbi, inode->i_ino);
352 if (IS_ERR(node_page))
353 return PTR_ERR(node_page);
354
355 ri = F2FS_INODE(node_page);
356
357 inode->i_mode = le16_to_cpu(ri->i_mode);
358 i_uid_write(inode, le32_to_cpu(ri->i_uid));
359 i_gid_write(inode, le32_to_cpu(ri->i_gid));
360 set_nlink(inode, le32_to_cpu(ri->i_links));
361 inode->i_size = le64_to_cpu(ri->i_size);
362 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
363
364 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
365 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
366 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
367 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
368 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
369 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
370 inode->i_generation = le32_to_cpu(ri->i_generation);
371 if (S_ISDIR(inode->i_mode))
372 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
373 else if (S_ISREG(inode->i_mode))
374 fi->i_gc_failures[GC_FAILURE_PIN] =
375 le16_to_cpu(ri->i_gc_failures);
376 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
377 fi->i_flags = le32_to_cpu(ri->i_flags);
378 if (S_ISREG(inode->i_mode))
379 fi->i_flags &= ~F2FS_PROJINHERIT_FL;
380 bitmap_zero(fi->flags, FI_MAX);
381 fi->i_advise = ri->i_advise;
382 fi->i_pino = le32_to_cpu(ri->i_pino);
383 fi->i_dir_level = ri->i_dir_level;
384
385 f2fs_init_extent_tree(inode, node_page);
386
387 get_inline_info(inode, ri);
388
389 fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
390 le16_to_cpu(ri->i_extra_isize) : 0;
391
392 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
393 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
394 } else if (f2fs_has_inline_xattr(inode) ||
395 f2fs_has_inline_dentry(inode)) {
396 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
397 } else {
398
399 /*
400 * Previous inline data or directory always reserved 200 bytes
401 * in inode layout, even if inline_xattr is disabled. In order
402 * to keep inline_dentry's structure for backward compatibility,
403 * we get the space back only from inline_data.
404 */
405 fi->i_inline_xattr_size = 0;
406 }
407
408 if (!sanity_check_inode(inode, node_page)) {
409 f2fs_put_page(node_page, 1);
410 return -EFSCORRUPTED;
411 }
412
413 /* check data exist */
414 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
415 __recover_inline_status(inode, node_page);
416
417 /* try to recover cold bit for non-dir inode */
418 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) {
419 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
420 set_cold_node(node_page, false);
421 set_page_dirty(node_page);
422 }
423
424 /* get rdev by using inline_info */
425 __get_inode_rdev(inode, ri);
426
427 if (S_ISREG(inode->i_mode)) {
428 err = __written_first_block(sbi, ri);
429 if (err < 0) {
430 f2fs_put_page(node_page, 1);
431 return err;
432 }
433 if (!err)
434 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
435 }
436
437 if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
438 fi->last_disk_size = inode->i_size;
439
440 if (fi->i_flags & F2FS_PROJINHERIT_FL)
441 set_inode_flag(inode, FI_PROJ_INHERIT);
442
443 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) &&
444 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
445 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
446 else
447 i_projid = F2FS_DEF_PROJID;
448 fi->i_projid = make_kprojid(&init_user_ns, i_projid);
449
450 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) &&
451 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
452 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
453 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
454 }
455
456 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
457 (fi->i_flags & F2FS_COMPR_FL)) {
458 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
459 i_log_cluster_size)) {
460 atomic_set(&fi->i_compr_blocks,
461 le64_to_cpu(ri->i_compr_blocks));
462 fi->i_compress_algorithm = ri->i_compress_algorithm;
463 fi->i_log_cluster_size = ri->i_log_cluster_size;
464 fi->i_cluster_size = 1 << fi->i_log_cluster_size;
465 set_inode_flag(inode, FI_COMPRESSED_FILE);
466 }
467 }
468
469 F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
470 F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
471 F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
472 F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
473 f2fs_put_page(node_page, 1);
474
475 stat_inc_inline_xattr(inode);
476 stat_inc_inline_inode(inode);
477 stat_inc_inline_dir(inode);
478 stat_inc_compr_inode(inode);
479 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks));
480
481 return 0;
482 }
483
f2fs_iget(struct super_block * sb,unsigned long ino)484 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
485 {
486 struct f2fs_sb_info *sbi = F2FS_SB(sb);
487 struct inode *inode;
488 int ret = 0;
489
490 inode = iget_locked(sb, ino);
491 if (!inode)
492 return ERR_PTR(-ENOMEM);
493
494 if (!(inode->i_state & I_NEW)) {
495 trace_f2fs_iget(inode);
496 return inode;
497 }
498 if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
499 goto make_now;
500
501 ret = do_read_inode(inode);
502 if (ret)
503 goto bad_inode;
504 make_now:
505 if (ino == F2FS_NODE_INO(sbi)) {
506 inode->i_mapping->a_ops = &f2fs_node_aops;
507 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
508 } else if (ino == F2FS_META_INO(sbi)) {
509 inode->i_mapping->a_ops = &f2fs_meta_aops;
510 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
511 } else if (S_ISREG(inode->i_mode)) {
512 inode->i_op = &f2fs_file_inode_operations;
513 inode->i_fop = &f2fs_file_operations;
514 inode->i_mapping->a_ops = &f2fs_dblock_aops;
515 } else if (S_ISDIR(inode->i_mode)) {
516 inode->i_op = &f2fs_dir_inode_operations;
517 inode->i_fop = &f2fs_dir_operations;
518 inode->i_mapping->a_ops = &f2fs_dblock_aops;
519 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
520 } else if (S_ISLNK(inode->i_mode)) {
521 if (file_is_encrypt(inode))
522 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
523 else
524 inode->i_op = &f2fs_symlink_inode_operations;
525 inode_nohighmem(inode);
526 inode->i_mapping->a_ops = &f2fs_dblock_aops;
527 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
528 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
529 inode->i_op = &f2fs_special_inode_operations;
530 init_special_inode(inode, inode->i_mode, inode->i_rdev);
531 } else {
532 ret = -EIO;
533 goto bad_inode;
534 }
535 f2fs_set_inode_flags(inode);
536 unlock_new_inode(inode);
537 trace_f2fs_iget(inode);
538 return inode;
539
540 bad_inode:
541 f2fs_inode_synced(inode);
542 iget_failed(inode);
543 trace_f2fs_iget_exit(inode, ret);
544 return ERR_PTR(ret);
545 }
546
f2fs_iget_retry(struct super_block * sb,unsigned long ino)547 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
548 {
549 struct inode *inode;
550 retry:
551 inode = f2fs_iget(sb, ino);
552 if (IS_ERR(inode)) {
553 if (PTR_ERR(inode) == -ENOMEM) {
554 congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
555 goto retry;
556 }
557 }
558 return inode;
559 }
560
f2fs_update_inode(struct inode * inode,struct page * node_page)561 void f2fs_update_inode(struct inode *inode, struct page *node_page)
562 {
563 struct f2fs_inode *ri;
564 struct extent_tree *et = F2FS_I(inode)->extent_tree;
565
566 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
567 set_page_dirty(node_page);
568
569 f2fs_inode_synced(inode);
570
571 ri = F2FS_INODE(node_page);
572
573 ri->i_mode = cpu_to_le16(inode->i_mode);
574 ri->i_advise = F2FS_I(inode)->i_advise;
575 ri->i_uid = cpu_to_le32(i_uid_read(inode));
576 ri->i_gid = cpu_to_le32(i_gid_read(inode));
577 ri->i_links = cpu_to_le32(inode->i_nlink);
578 ri->i_size = cpu_to_le64(i_size_read(inode));
579 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
580
581 if (et) {
582 read_lock(&et->lock);
583 set_raw_extent(&et->largest, &ri->i_ext);
584 read_unlock(&et->lock);
585 } else {
586 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
587 }
588 set_raw_inline(inode, ri);
589
590 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
591 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
592 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
593 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
594 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
595 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
596 if (S_ISDIR(inode->i_mode))
597 ri->i_current_depth =
598 cpu_to_le32(F2FS_I(inode)->i_current_depth);
599 else if (S_ISREG(inode->i_mode))
600 ri->i_gc_failures =
601 cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]);
602 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
603 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
604 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
605 ri->i_generation = cpu_to_le32(inode->i_generation);
606 ri->i_dir_level = F2FS_I(inode)->i_dir_level;
607
608 if (f2fs_has_extra_attr(inode)) {
609 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
610
611 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)))
612 ri->i_inline_xattr_size =
613 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
614
615 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) &&
616 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
617 i_projid)) {
618 projid_t i_projid;
619
620 i_projid = from_kprojid(&init_user_ns,
621 F2FS_I(inode)->i_projid);
622 ri->i_projid = cpu_to_le32(i_projid);
623 }
624
625 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
626 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
627 i_crtime)) {
628 ri->i_crtime =
629 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
630 ri->i_crtime_nsec =
631 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
632 }
633
634 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) &&
635 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
636 i_log_cluster_size)) {
637 ri->i_compr_blocks =
638 cpu_to_le64(atomic_read(
639 &F2FS_I(inode)->i_compr_blocks));
640 ri->i_compress_algorithm =
641 F2FS_I(inode)->i_compress_algorithm;
642 ri->i_log_cluster_size =
643 F2FS_I(inode)->i_log_cluster_size;
644 }
645 }
646
647 __set_inode_rdev(inode, ri);
648
649 /* deleted inode */
650 if (inode->i_nlink == 0)
651 clear_inline_node(node_page);
652
653 F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
654 F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
655 F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
656 F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
657
658 #ifdef CONFIG_F2FS_CHECK_FS
659 f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);
660 #endif
661 }
662
f2fs_update_inode_page(struct inode * inode)663 void f2fs_update_inode_page(struct inode *inode)
664 {
665 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
666 struct page *node_page;
667 retry:
668 node_page = f2fs_get_node_page(sbi, inode->i_ino);
669 if (IS_ERR(node_page)) {
670 int err = PTR_ERR(node_page);
671 if (err == -ENOMEM) {
672 cond_resched();
673 goto retry;
674 } else if (err != -ENOENT) {
675 f2fs_stop_checkpoint(sbi, false);
676 }
677 return;
678 }
679 f2fs_update_inode(inode, node_page);
680 f2fs_put_page(node_page, 1);
681 }
682
f2fs_write_inode(struct inode * inode,struct writeback_control * wbc)683 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
684 {
685 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
686
687 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
688 inode->i_ino == F2FS_META_INO(sbi))
689 return 0;
690
691 /*
692 * atime could be updated without dirtying f2fs inode in lazytime mode
693 */
694 if (f2fs_is_time_consistent(inode) &&
695 !is_inode_flag_set(inode, FI_DIRTY_INODE))
696 return 0;
697
698 if (!f2fs_is_checkpoint_ready(sbi))
699 return -ENOSPC;
700
701 /*
702 * We need to balance fs here to prevent from producing dirty node pages
703 * during the urgent cleaning time when runing out of free sections.
704 */
705 f2fs_update_inode_page(inode);
706 if (wbc && wbc->nr_to_write)
707 f2fs_balance_fs(sbi, true);
708 return 0;
709 }
710
711 /*
712 * Called at the last iput() if i_nlink is zero
713 */
f2fs_evict_inode(struct inode * inode)714 void f2fs_evict_inode(struct inode *inode)
715 {
716 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
717 nid_t xnid = F2FS_I(inode)->i_xattr_nid;
718 int err = 0;
719
720 /* some remained atomic pages should discarded */
721 if (f2fs_is_atomic_file(inode))
722 f2fs_drop_inmem_pages(inode);
723
724 trace_f2fs_evict_inode(inode);
725 truncate_inode_pages_final(&inode->i_data);
726
727 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
728 inode->i_ino == F2FS_META_INO(sbi))
729 goto out_clear;
730
731 f2fs_bug_on(sbi, get_dirty_pages(inode));
732 f2fs_remove_dirty_inode(inode);
733
734 f2fs_destroy_extent_tree(inode);
735
736 if (inode->i_nlink || is_bad_inode(inode))
737 goto no_delete;
738
739 err = dquot_initialize(inode);
740 if (err) {
741 err = 0;
742 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
743 }
744
745 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
746 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
747 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
748
749 sb_start_intwrite(inode->i_sb);
750 set_inode_flag(inode, FI_NO_ALLOC);
751 i_size_write(inode, 0);
752 retry:
753 if (F2FS_HAS_BLOCKS(inode))
754 err = f2fs_truncate(inode);
755
756 if (time_to_inject(sbi, FAULT_EVICT_INODE)) {
757 f2fs_show_injection_info(sbi, FAULT_EVICT_INODE);
758 err = -EIO;
759 }
760
761 if (!err) {
762 f2fs_lock_op(sbi);
763 err = f2fs_remove_inode_page(inode);
764 f2fs_unlock_op(sbi);
765 if (err == -ENOENT) {
766 err = 0;
767
768 /*
769 * in fuzzed image, another node may has the same
770 * block address as inode's, if it was truncated
771 * previously, truncation of inode node will fail.
772 */
773 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
774 f2fs_warn(F2FS_I_SB(inode),
775 "f2fs_evict_inode: inconsistent node id, ino:%lu",
776 inode->i_ino);
777 f2fs_inode_synced(inode);
778 set_sbi_flag(sbi, SBI_NEED_FSCK);
779 }
780 }
781 }
782
783 /* give more chances, if ENOMEM case */
784 if (err == -ENOMEM) {
785 err = 0;
786 goto retry;
787 }
788
789 if (err) {
790 f2fs_update_inode_page(inode);
791 if (dquot_initialize_needed(inode))
792 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
793 }
794 sb_end_intwrite(inode->i_sb);
795 no_delete:
796 dquot_drop(inode);
797
798 stat_dec_inline_xattr(inode);
799 stat_dec_inline_dir(inode);
800 stat_dec_inline_inode(inode);
801 stat_dec_compr_inode(inode);
802 stat_sub_compr_blocks(inode,
803 atomic_read(&F2FS_I(inode)->i_compr_blocks));
804
805 if (likely(!f2fs_cp_error(sbi) &&
806 !is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
807 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
808 else
809 f2fs_inode_synced(inode);
810
811 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */
812 if (inode->i_ino)
813 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
814 inode->i_ino);
815 if (xnid)
816 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
817 if (inode->i_nlink) {
818 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
819 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);
820 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
821 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
822 }
823 if (is_inode_flag_set(inode, FI_FREE_NID)) {
824 f2fs_alloc_nid_failed(sbi, inode->i_ino);
825 clear_inode_flag(inode, FI_FREE_NID);
826 } else {
827 /*
828 * If xattr nid is corrupted, we can reach out error condition,
829 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).
830 * In that case, f2fs_check_nid_range() is enough to give a clue.
831 */
832 }
833 out_clear:
834 fscrypt_put_encryption_info(inode);
835 fsverity_cleanup_inode(inode);
836 clear_inode(inode);
837 }
838
839 /* caller should call f2fs_lock_op() */
f2fs_handle_failed_inode(struct inode * inode)840 void f2fs_handle_failed_inode(struct inode *inode)
841 {
842 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
843 struct node_info ni;
844 int err;
845
846 /*
847 * clear nlink of inode in order to release resource of inode
848 * immediately.
849 */
850 clear_nlink(inode);
851
852 /*
853 * we must call this to avoid inode being remained as dirty, resulting
854 * in a panic when flushing dirty inodes in gdirty_list.
855 */
856 f2fs_update_inode_page(inode);
857 f2fs_inode_synced(inode);
858
859 /* don't make bad inode, since it becomes a regular file. */
860 unlock_new_inode(inode);
861
862 /*
863 * Note: we should add inode to orphan list before f2fs_unlock_op()
864 * so we can prevent losing this orphan when encoutering checkpoint
865 * and following suddenly power-off.
866 */
867 err = f2fs_get_node_info(sbi, inode->i_ino, &ni);
868 if (err) {
869 set_sbi_flag(sbi, SBI_NEED_FSCK);
870 set_inode_flag(inode, FI_FREE_NID);
871 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix.");
872 goto out;
873 }
874
875 if (ni.blk_addr != NULL_ADDR) {
876 err = f2fs_acquire_orphan_inode(sbi);
877 if (err) {
878 set_sbi_flag(sbi, SBI_NEED_FSCK);
879 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix.");
880 } else {
881 f2fs_add_orphan_inode(inode);
882 }
883 f2fs_alloc_nid_done(sbi, inode->i_ino);
884 } else {
885 set_inode_flag(inode, FI_FREE_NID);
886 }
887
888 out:
889 f2fs_unlock_op(sbi);
890
891 /* iput will drop the inode object */
892 iput(inode);
893 }
894