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_readonly(F2FS_I_SB(inode)->sb))
27 return;
28
29 if (f2fs_inode_dirtied(inode, sync))
30 return;
31
32 mark_inode_dirty_sync(inode);
33 }
34
f2fs_set_inode_flags(struct inode *inode)35 void f2fs_set_inode_flags(struct inode *inode)
36 {
37 unsigned int flags = F2FS_I(inode)->i_flags;
38 unsigned int new_fl = 0;
39
40 if (flags & F2FS_SYNC_FL)
41 new_fl |= S_SYNC;
42 if (flags & F2FS_APPEND_FL)
43 new_fl |= S_APPEND;
44 if (flags & F2FS_IMMUTABLE_FL)
45 new_fl |= S_IMMUTABLE;
46 if (flags & F2FS_NOATIME_FL)
47 new_fl |= S_NOATIME;
48 if (flags & F2FS_DIRSYNC_FL)
49 new_fl |= S_DIRSYNC;
50 if (file_is_encrypt(inode))
51 new_fl |= S_ENCRYPTED;
52 if (file_is_verity(inode))
53 new_fl |= S_VERITY;
54 if (flags & F2FS_CASEFOLD_FL)
55 new_fl |= S_CASEFOLD;
56 inode_set_flags(inode, new_fl,
57 S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|
58 S_ENCRYPTED|S_VERITY|S_CASEFOLD);
59 }
60
__get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)61 static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
62 {
63 int extra_size = get_extra_isize(inode);
64
65 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
66 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
67 if (ri->i_addr[extra_size])
68 inode->i_rdev = old_decode_dev(
69 le32_to_cpu(ri->i_addr[extra_size]));
70 else
71 inode->i_rdev = new_decode_dev(
72 le32_to_cpu(ri->i_addr[extra_size + 1]));
73 }
74 }
75
__written_first_block(struct f2fs_sb_info *sbi, struct f2fs_inode *ri)76 static int __written_first_block(struct f2fs_sb_info *sbi,
77 struct f2fs_inode *ri)
78 {
79 block_t addr = le32_to_cpu(ri->i_addr[offset_in_addr(ri)]);
80
81 if (!__is_valid_data_blkaddr(addr))
82 return 1;
83 if (!f2fs_is_valid_blkaddr(sbi, addr, DATA_GENERIC_ENHANCE))
84 return -EFSCORRUPTED;
85 return 0;
86 }
87
__set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)88 static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
89 {
90 int extra_size = get_extra_isize(inode);
91
92 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
93 if (old_valid_dev(inode->i_rdev)) {
94 ri->i_addr[extra_size] =
95 cpu_to_le32(old_encode_dev(inode->i_rdev));
96 ri->i_addr[extra_size + 1] = 0;
97 } else {
98 ri->i_addr[extra_size] = 0;
99 ri->i_addr[extra_size + 1] =
100 cpu_to_le32(new_encode_dev(inode->i_rdev));
101 ri->i_addr[extra_size + 2] = 0;
102 }
103 }
104 }
105
__recover_inline_status(struct inode *inode, struct page *ipage)106 static void __recover_inline_status(struct inode *inode, struct page *ipage)
107 {
108 void *inline_data = inline_data_addr(inode, ipage);
109 __le32 *start = inline_data;
110 __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);
111
112 while (start < end) {
113 if (*start++) {
114 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
115
116 set_inode_flag(inode, FI_DATA_EXIST);
117 set_raw_inline(inode, F2FS_INODE(ipage));
118 set_page_dirty(ipage);
119 return;
120 }
121 }
122 return;
123 }
124
f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)125 static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
126 {
127 struct f2fs_inode *ri = &F2FS_NODE(page)->i;
128
129 if (!f2fs_sb_has_inode_chksum(sbi))
130 return false;
131
132 if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR))
133 return false;
134
135 if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize),
136 i_inode_checksum))
137 return false;
138
139 return true;
140 }
141
f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)142 static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
143 {
144 struct f2fs_node *node = F2FS_NODE(page);
145 struct f2fs_inode *ri = &node->i;
146 __le32 ino = node->footer.ino;
147 __le32 gen = ri->i_generation;
148 __u32 chksum, chksum_seed;
149 __u32 dummy_cs = 0;
150 unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum);
151 unsigned int cs_size = sizeof(dummy_cs);
152
153 chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino,
154 sizeof(ino));
155 chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen));
156
157 chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset);
158 chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size);
159 offset += cs_size;
160 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset,
161 F2FS_BLKSIZE - offset);
162 return chksum;
163 }
164
f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)165 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)
166 {
167 struct f2fs_inode *ri;
168 __u32 provided, calculated;
169
170 if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)))
171 return true;
172
173 #ifdef CONFIG_F2FS_CHECK_FS
174 if (!f2fs_enable_inode_chksum(sbi, page))
175 #else
176 if (!f2fs_enable_inode_chksum(sbi, page) ||
177 PageDirty(page) || PageWriteback(page))
178 #endif
179 return true;
180
181 ri = &F2FS_NODE(page)->i;
182 provided = le32_to_cpu(ri->i_inode_checksum);
183 calculated = f2fs_inode_chksum(sbi, page);
184
185 if (provided != calculated)
186 f2fs_warn(sbi, "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x",
187 page->index, ino_of_node(page), provided, calculated);
188
189 return provided == calculated;
190 }
191
f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page)192 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page)
193 {
194 struct f2fs_inode *ri = &F2FS_NODE(page)->i;
195
196 if (!f2fs_enable_inode_chksum(sbi, page))
197 return;
198
199 ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page));
200 }
201
sanity_check_inode(struct inode *inode, struct page *node_page)202 static bool sanity_check_inode(struct inode *inode, struct page *node_page)
203 {
204 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
205 struct f2fs_inode_info *fi = F2FS_I(inode);
206 struct f2fs_inode *ri = F2FS_INODE(node_page);
207 unsigned long long iblocks;
208
209 iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks);
210 if (!iblocks) {
211 set_sbi_flag(sbi, SBI_NEED_FSCK);
212 f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.",
213 __func__, inode->i_ino, iblocks);
214 return false;
215 }
216
217 if (ino_of_node(node_page) != nid_of_node(node_page)) {
218 set_sbi_flag(sbi, SBI_NEED_FSCK);
219 f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.",
220 __func__, inode->i_ino,
221 ino_of_node(node_page), nid_of_node(node_page));
222 return false;
223 }
224
225 if (f2fs_sb_has_flexible_inline_xattr(sbi)
226 && !f2fs_has_extra_attr(inode)) {
227 set_sbi_flag(sbi, SBI_NEED_FSCK);
228 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, run fsck to fix.",
229 __func__, inode->i_ino);
230 return false;
231 }
232
233 if (f2fs_has_extra_attr(inode) &&
234 !f2fs_sb_has_extra_attr(sbi)) {
235 set_sbi_flag(sbi, SBI_NEED_FSCK);
236 f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off",
237 __func__, inode->i_ino);
238 return false;
239 }
240
241 if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE ||
242 fi->i_extra_isize % sizeof(__le32)) {
243 set_sbi_flag(sbi, SBI_NEED_FSCK);
244 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu",
245 __func__, inode->i_ino, fi->i_extra_isize,
246 F2FS_TOTAL_EXTRA_ATTR_SIZE);
247 return false;
248 }
249
250 if (f2fs_has_extra_attr(inode) &&
251 f2fs_sb_has_flexible_inline_xattr(sbi) &&
252 f2fs_has_inline_xattr(inode) &&
253 (!fi->i_inline_xattr_size ||
254 fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) {
255 set_sbi_flag(sbi, SBI_NEED_FSCK);
256 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %zu",
257 __func__, inode->i_ino, fi->i_inline_xattr_size,
258 MAX_INLINE_XATTR_SIZE);
259 return false;
260 }
261
262 if (F2FS_I(inode)->extent_tree) {
263 struct extent_info *ei = &F2FS_I(inode)->extent_tree->largest;
264
265 if (ei->len &&
266 (!f2fs_is_valid_blkaddr(sbi, ei->blk,
267 DATA_GENERIC_ENHANCE) ||
268 !f2fs_is_valid_blkaddr(sbi, ei->blk + ei->len - 1,
269 DATA_GENERIC_ENHANCE))) {
270 set_sbi_flag(sbi, SBI_NEED_FSCK);
271 f2fs_warn(sbi, "%s: inode (ino=%lx) extent info [%u, %u, %u] is incorrect, run fsck to fix",
272 __func__, inode->i_ino,
273 ei->blk, ei->fofs, ei->len);
274 return false;
275 }
276 }
277
278 if (f2fs_sanity_check_inline_data(inode)) {
279 set_sbi_flag(sbi, SBI_NEED_FSCK);
280 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix",
281 __func__, inode->i_ino, inode->i_mode);
282 return false;
283 }
284
285 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
286 set_sbi_flag(sbi, SBI_NEED_FSCK);
287 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix",
288 __func__, inode->i_ino, inode->i_mode);
289 return false;
290 }
291
292 if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) {
293 set_sbi_flag(sbi, SBI_NEED_FSCK);
294 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off",
295 __func__, inode->i_ino);
296 return false;
297 }
298
299 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
300 fi->i_flags & F2FS_COMPR_FL &&
301 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
302 i_log_cluster_size)) {
303 if (ri->i_compress_algorithm >= COMPRESS_MAX) {
304 set_sbi_flag(sbi, SBI_NEED_FSCK);
305 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
306 "compress algorithm: %u, run fsck to fix",
307 __func__, inode->i_ino,
308 ri->i_compress_algorithm);
309 return false;
310 }
311 if (le64_to_cpu(ri->i_compr_blocks) >
312 SECTOR_TO_BLOCK(inode->i_blocks)) {
313 set_sbi_flag(sbi, SBI_NEED_FSCK);
314 f2fs_warn(sbi, "%s: inode (ino=%lx) has inconsistent "
315 "i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix",
316 __func__, inode->i_ino,
317 le64_to_cpu(ri->i_compr_blocks),
318 SECTOR_TO_BLOCK(inode->i_blocks));
319 return false;
320 }
321 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
322 ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) {
323 set_sbi_flag(sbi, SBI_NEED_FSCK);
324 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
325 "log cluster size: %u, run fsck to fix",
326 __func__, inode->i_ino,
327 ri->i_log_cluster_size);
328 return false;
329 }
330 }
331
332 if (fi->i_xattr_nid && f2fs_check_nid_range(sbi, fi->i_xattr_nid)) {
333 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_xattr_nid: %u, run fsck to fix.",
334 __func__, inode->i_ino, fi->i_xattr_nid);
335 return false;
336 }
337
338 return true;
339 }
340
do_read_inode(struct inode *inode)341 static int do_read_inode(struct inode *inode)
342 {
343 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
344 struct f2fs_inode_info *fi = F2FS_I(inode);
345 struct page *node_page;
346 struct f2fs_inode *ri;
347 projid_t i_projid;
348 int err;
349
350 /* Check if ino is within scope */
351 if (f2fs_check_nid_range(sbi, inode->i_ino))
352 return -EINVAL;
353
354 node_page = f2fs_get_node_page(sbi, inode->i_ino);
355 if (IS_ERR(node_page))
356 return PTR_ERR(node_page);
357
358 ri = F2FS_INODE(node_page);
359
360 inode->i_mode = le16_to_cpu(ri->i_mode);
361 i_uid_write(inode, le32_to_cpu(ri->i_uid));
362 i_gid_write(inode, le32_to_cpu(ri->i_gid));
363 set_nlink(inode, le32_to_cpu(ri->i_links));
364 inode->i_size = le64_to_cpu(ri->i_size);
365 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
366
367 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
368 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
369 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
370 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
371 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
372 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
373 inode->i_generation = le32_to_cpu(ri->i_generation);
374 if (S_ISDIR(inode->i_mode))
375 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
376 else if (S_ISREG(inode->i_mode))
377 fi->i_gc_failures[GC_FAILURE_PIN] =
378 le16_to_cpu(ri->i_gc_failures);
379 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
380 fi->i_flags = le32_to_cpu(ri->i_flags);
381 if (S_ISREG(inode->i_mode))
382 fi->i_flags &= ~F2FS_PROJINHERIT_FL;
383 bitmap_zero(fi->flags, FI_MAX);
384 fi->i_advise = ri->i_advise;
385 fi->i_pino = le32_to_cpu(ri->i_pino);
386 fi->i_dir_level = ri->i_dir_level;
387
388 f2fs_init_extent_tree(inode, node_page);
389
390 get_inline_info(inode, ri);
391
392 fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
393 le16_to_cpu(ri->i_extra_isize) : 0;
394
395 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
396 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
397 } else if (f2fs_has_inline_xattr(inode) ||
398 f2fs_has_inline_dentry(inode)) {
399 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
400 } else {
401
402 /*
403 * Previous inline data or directory always reserved 200 bytes
404 * in inode layout, even if inline_xattr is disabled. In order
405 * to keep inline_dentry's structure for backward compatibility,
406 * we get the space back only from inline_data.
407 */
408 fi->i_inline_xattr_size = 0;
409 }
410
411 if (!sanity_check_inode(inode, node_page)) {
412 f2fs_put_page(node_page, 1);
413 return -EFSCORRUPTED;
414 }
415
416 /* check data exist */
417 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
418 __recover_inline_status(inode, node_page);
419
420 /* try to recover cold bit for non-dir inode */
421 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) {
422 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
423 set_cold_node(node_page, false);
424 set_page_dirty(node_page);
425 }
426
427 /* get rdev by using inline_info */
428 __get_inode_rdev(inode, ri);
429
430 if (S_ISREG(inode->i_mode)) {
431 err = __written_first_block(sbi, ri);
432 if (err < 0) {
433 f2fs_put_page(node_page, 1);
434 return err;
435 }
436 if (!err)
437 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
438 }
439
440 if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
441 fi->last_disk_size = inode->i_size;
442
443 if (fi->i_flags & F2FS_PROJINHERIT_FL)
444 set_inode_flag(inode, FI_PROJ_INHERIT);
445
446 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) &&
447 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
448 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
449 else
450 i_projid = F2FS_DEF_PROJID;
451 fi->i_projid = make_kprojid(&init_user_ns, i_projid);
452
453 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) &&
454 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
455 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
456 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
457 }
458
459 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
460 (fi->i_flags & F2FS_COMPR_FL)) {
461 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
462 i_log_cluster_size)) {
463 atomic_set(&fi->i_compr_blocks,
464 le64_to_cpu(ri->i_compr_blocks));
465 fi->i_compress_algorithm = ri->i_compress_algorithm;
466 fi->i_log_cluster_size = ri->i_log_cluster_size;
467 fi->i_cluster_size = 1 << fi->i_log_cluster_size;
468 set_inode_flag(inode, FI_COMPRESSED_FILE);
469 }
470 }
471
472 F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
473 F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
474 F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
475 F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
476 f2fs_put_page(node_page, 1);
477
478 stat_inc_inline_xattr(inode);
479 stat_inc_inline_inode(inode);
480 stat_inc_inline_dir(inode);
481 stat_inc_compr_inode(inode);
482 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks));
483
484 return 0;
485 }
486
f2fs_iget(struct super_block *sb, unsigned long ino)487 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
488 {
489 struct f2fs_sb_info *sbi = F2FS_SB(sb);
490 struct inode *inode;
491 int ret = 0;
492
493 inode = iget_locked(sb, ino);
494 if (!inode)
495 return ERR_PTR(-ENOMEM);
496
497 if (!(inode->i_state & I_NEW)) {
498 trace_f2fs_iget(inode);
499 return inode;
500 }
501 if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
502 goto make_now;
503
504 ret = do_read_inode(inode);
505 if (ret)
506 goto bad_inode;
507 make_now:
508 if (ino == F2FS_NODE_INO(sbi)) {
509 inode->i_mapping->a_ops = &f2fs_node_aops;
510 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
511 } else if (ino == F2FS_META_INO(sbi)) {
512 inode->i_mapping->a_ops = &f2fs_meta_aops;
513 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
514 } else if (S_ISREG(inode->i_mode)) {
515 inode->i_op = &f2fs_file_inode_operations;
516 inode->i_fop = &f2fs_file_operations;
517 inode->i_mapping->a_ops = &f2fs_dblock_aops;
518 } else if (S_ISDIR(inode->i_mode)) {
519 inode->i_op = &f2fs_dir_inode_operations;
520 inode->i_fop = &f2fs_dir_operations;
521 inode->i_mapping->a_ops = &f2fs_dblock_aops;
522 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
523 } else if (S_ISLNK(inode->i_mode)) {
524 if (file_is_encrypt(inode))
525 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
526 else
527 inode->i_op = &f2fs_symlink_inode_operations;
528 inode_nohighmem(inode);
529 inode->i_mapping->a_ops = &f2fs_dblock_aops;
530 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
531 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
532 inode->i_op = &f2fs_special_inode_operations;
533 init_special_inode(inode, inode->i_mode, inode->i_rdev);
534 } else {
535 ret = -EIO;
536 goto bad_inode;
537 }
538 f2fs_set_inode_flags(inode);
539 unlock_new_inode(inode);
540 trace_f2fs_iget(inode);
541 return inode;
542
543 bad_inode:
544 f2fs_inode_synced(inode);
545 iget_failed(inode);
546 trace_f2fs_iget_exit(inode, ret);
547 return ERR_PTR(ret);
548 }
549
f2fs_iget_retry(struct super_block *sb, unsigned long ino)550 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
551 {
552 struct inode *inode;
553 retry:
554 inode = f2fs_iget(sb, ino);
555 if (IS_ERR(inode)) {
556 if (PTR_ERR(inode) == -ENOMEM) {
557 congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
558 goto retry;
559 }
560 }
561 return inode;
562 }
563
f2fs_update_inode(struct inode *inode, struct page *node_page)564 void f2fs_update_inode(struct inode *inode, struct page *node_page)
565 {
566 struct f2fs_inode *ri;
567 struct extent_tree *et = F2FS_I(inode)->extent_tree;
568
569 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
570 set_page_dirty(node_page);
571
572 f2fs_inode_synced(inode);
573
574 ri = F2FS_INODE(node_page);
575
576 ri->i_mode = cpu_to_le16(inode->i_mode);
577 ri->i_advise = F2FS_I(inode)->i_advise;
578 ri->i_uid = cpu_to_le32(i_uid_read(inode));
579 ri->i_gid = cpu_to_le32(i_gid_read(inode));
580 ri->i_links = cpu_to_le32(inode->i_nlink);
581 ri->i_size = cpu_to_le64(i_size_read(inode));
582 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
583
584 if (et) {
585 read_lock(&et->lock);
586 set_raw_extent(&et->largest, &ri->i_ext);
587 read_unlock(&et->lock);
588 } else {
589 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
590 }
591 set_raw_inline(inode, ri);
592
593 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
594 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
595 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
596 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
597 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
598 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
599 if (S_ISDIR(inode->i_mode))
600 ri->i_current_depth =
601 cpu_to_le32(F2FS_I(inode)->i_current_depth);
602 else if (S_ISREG(inode->i_mode))
603 ri->i_gc_failures =
604 cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]);
605 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
606 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
607 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
608 ri->i_generation = cpu_to_le32(inode->i_generation);
609 ri->i_dir_level = F2FS_I(inode)->i_dir_level;
610
611 if (f2fs_has_extra_attr(inode)) {
612 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
613
614 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)))
615 ri->i_inline_xattr_size =
616 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
617
618 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) &&
619 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
620 i_projid)) {
621 projid_t i_projid;
622
623 i_projid = from_kprojid(&init_user_ns,
624 F2FS_I(inode)->i_projid);
625 ri->i_projid = cpu_to_le32(i_projid);
626 }
627
628 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
629 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
630 i_crtime)) {
631 ri->i_crtime =
632 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
633 ri->i_crtime_nsec =
634 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
635 }
636
637 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) &&
638 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
639 i_log_cluster_size)) {
640 ri->i_compr_blocks =
641 cpu_to_le64(atomic_read(
642 &F2FS_I(inode)->i_compr_blocks));
643 ri->i_compress_algorithm =
644 F2FS_I(inode)->i_compress_algorithm;
645 ri->i_log_cluster_size =
646 F2FS_I(inode)->i_log_cluster_size;
647 }
648 }
649
650 __set_inode_rdev(inode, ri);
651
652 /* deleted inode */
653 if (inode->i_nlink == 0)
654 clear_inline_node(node_page);
655
656 F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
657 F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
658 F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
659 F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
660
661 #ifdef CONFIG_F2FS_CHECK_FS
662 f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);
663 #endif
664 }
665
f2fs_update_inode_page(struct inode *inode)666 void f2fs_update_inode_page(struct inode *inode)
667 {
668 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
669 struct page *node_page;
670 retry:
671 node_page = f2fs_get_node_page(sbi, inode->i_ino);
672 if (IS_ERR(node_page)) {
673 int err = PTR_ERR(node_page);
674 if (err == -ENOMEM) {
675 cond_resched();
676 goto retry;
677 } else if (err != -ENOENT) {
678 f2fs_stop_checkpoint(sbi, false);
679 }
680 return;
681 }
682 f2fs_update_inode(inode, node_page);
683 f2fs_put_page(node_page, 1);
684 }
685
f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)686 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
687 {
688 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
689
690 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
691 inode->i_ino == F2FS_META_INO(sbi))
692 return 0;
693
694 /*
695 * atime could be updated without dirtying f2fs inode in lazytime mode
696 */
697 if (f2fs_is_time_consistent(inode) &&
698 !is_inode_flag_set(inode, FI_DIRTY_INODE))
699 return 0;
700
701 if (!f2fs_is_checkpoint_ready(sbi))
702 return -ENOSPC;
703
704 /*
705 * We need to balance fs here to prevent from producing dirty node pages
706 * during the urgent cleaning time when runing out of free sections.
707 */
708 f2fs_update_inode_page(inode);
709 if (wbc && wbc->nr_to_write)
710 f2fs_balance_fs(sbi, true);
711 return 0;
712 }
713
714 /*
715 * Called at the last iput() if i_nlink is zero
716 */
f2fs_evict_inode(struct inode *inode)717 void f2fs_evict_inode(struct inode *inode)
718 {
719 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
720 nid_t xnid = F2FS_I(inode)->i_xattr_nid;
721 int err = 0;
722
723 /* some remained atomic pages should discarded */
724 if (f2fs_is_atomic_file(inode))
725 f2fs_drop_inmem_pages(inode);
726
727 trace_f2fs_evict_inode(inode);
728 truncate_inode_pages_final(&inode->i_data);
729
730 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
731 inode->i_ino == F2FS_META_INO(sbi))
732 goto out_clear;
733
734 f2fs_bug_on(sbi, get_dirty_pages(inode));
735 f2fs_remove_dirty_inode(inode);
736
737 f2fs_destroy_extent_tree(inode);
738
739 if (inode->i_nlink || is_bad_inode(inode))
740 goto no_delete;
741
742 err = dquot_initialize(inode);
743 if (err) {
744 err = 0;
745 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
746 }
747
748 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
749 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
750 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
751
752 sb_start_intwrite(inode->i_sb);
753 set_inode_flag(inode, FI_NO_ALLOC);
754 i_size_write(inode, 0);
755 retry:
756 if (F2FS_HAS_BLOCKS(inode))
757 err = f2fs_truncate(inode);
758
759 if (time_to_inject(sbi, FAULT_EVICT_INODE)) {
760 f2fs_show_injection_info(sbi, FAULT_EVICT_INODE);
761 err = -EIO;
762 }
763
764 if (!err) {
765 f2fs_lock_op(sbi);
766 err = f2fs_remove_inode_page(inode);
767 f2fs_unlock_op(sbi);
768 if (err == -ENOENT) {
769 err = 0;
770
771 /*
772 * in fuzzed image, another node may has the same
773 * block address as inode's, if it was truncated
774 * previously, truncation of inode node will fail.
775 */
776 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
777 f2fs_warn(F2FS_I_SB(inode),
778 "f2fs_evict_inode: inconsistent node id, ino:%lu",
779 inode->i_ino);
780 f2fs_inode_synced(inode);
781 set_sbi_flag(sbi, SBI_NEED_FSCK);
782 }
783 }
784 }
785
786 /* give more chances, if ENOMEM case */
787 if (err == -ENOMEM) {
788 err = 0;
789 goto retry;
790 }
791
792 if (err) {
793 f2fs_update_inode_page(inode);
794 if (dquot_initialize_needed(inode))
795 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
796 }
797 sb_end_intwrite(inode->i_sb);
798 no_delete:
799 dquot_drop(inode);
800
801 stat_dec_inline_xattr(inode);
802 stat_dec_inline_dir(inode);
803 stat_dec_inline_inode(inode);
804 stat_dec_compr_inode(inode);
805 stat_sub_compr_blocks(inode,
806 atomic_read(&F2FS_I(inode)->i_compr_blocks));
807
808 if (likely(!f2fs_cp_error(sbi) &&
809 !is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
810 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
811 else
812 f2fs_inode_synced(inode);
813
814 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */
815 if (inode->i_ino)
816 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
817 inode->i_ino);
818 if (xnid)
819 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
820 if (inode->i_nlink) {
821 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
822 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);
823 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
824 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
825 }
826 if (is_inode_flag_set(inode, FI_FREE_NID)) {
827 f2fs_alloc_nid_failed(sbi, inode->i_ino);
828 clear_inode_flag(inode, FI_FREE_NID);
829 } else {
830 /*
831 * If xattr nid is corrupted, we can reach out error condition,
832 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).
833 * In that case, f2fs_check_nid_range() is enough to give a clue.
834 */
835 }
836 out_clear:
837 fscrypt_put_encryption_info(inode);
838 fsverity_cleanup_inode(inode);
839 clear_inode(inode);
840 }
841
842 /* caller should call f2fs_lock_op() */
f2fs_handle_failed_inode(struct inode *inode)843 void f2fs_handle_failed_inode(struct inode *inode)
844 {
845 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
846 struct node_info ni;
847 int err;
848
849 /*
850 * clear nlink of inode in order to release resource of inode
851 * immediately.
852 */
853 clear_nlink(inode);
854
855 /*
856 * we must call this to avoid inode being remained as dirty, resulting
857 * in a panic when flushing dirty inodes in gdirty_list.
858 */
859 f2fs_update_inode_page(inode);
860 f2fs_inode_synced(inode);
861
862 /* don't make bad inode, since it becomes a regular file. */
863 unlock_new_inode(inode);
864
865 /*
866 * Note: we should add inode to orphan list before f2fs_unlock_op()
867 * so we can prevent losing this orphan when encoutering checkpoint
868 * and following suddenly power-off.
869 */
870 err = f2fs_get_node_info(sbi, inode->i_ino, &ni);
871 if (err) {
872 set_sbi_flag(sbi, SBI_NEED_FSCK);
873 set_inode_flag(inode, FI_FREE_NID);
874 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix.");
875 goto out;
876 }
877
878 if (ni.blk_addr != NULL_ADDR) {
879 err = f2fs_acquire_orphan_inode(sbi);
880 if (err) {
881 set_sbi_flag(sbi, SBI_NEED_FSCK);
882 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix.");
883 } else {
884 f2fs_add_orphan_inode(inode);
885 }
886 f2fs_alloc_nid_done(sbi, inode->i_ino);
887 } else {
888 set_inode_flag(inode, FI_FREE_NID);
889 }
890
891 out:
892 f2fs_unlock_op(sbi);
893
894 /* iput will drop the inode object */
895 iput(inode);
896 }
897