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 (f2fs_sanity_check_inline_data(inode)) {
266 set_sbi_flag(sbi, SBI_NEED_FSCK);
267 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix",
268 __func__, inode->i_ino, inode->i_mode);
269 return false;
270 }
271
272 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
273 set_sbi_flag(sbi, SBI_NEED_FSCK);
274 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix",
275 __func__, inode->i_ino, inode->i_mode);
276 return false;
277 }
278
279 if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) {
280 set_sbi_flag(sbi, SBI_NEED_FSCK);
281 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off",
282 __func__, inode->i_ino);
283 return false;
284 }
285
286 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
287 fi->i_flags & F2FS_COMPR_FL &&
288 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
289 i_log_cluster_size)) {
290 if (ri->i_compress_algorithm >= COMPRESS_MAX) {
291 set_sbi_flag(sbi, SBI_NEED_FSCK);
292 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
293 "compress algorithm: %u, run fsck to fix",
294 __func__, inode->i_ino,
295 ri->i_compress_algorithm);
296 return false;
297 }
298 if (le64_to_cpu(ri->i_compr_blocks) >
299 SECTOR_TO_BLOCK(inode->i_blocks)) {
300 set_sbi_flag(sbi, SBI_NEED_FSCK);
301 f2fs_warn(sbi, "%s: inode (ino=%lx) has inconsistent "
302 "i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix",
303 __func__, inode->i_ino,
304 le64_to_cpu(ri->i_compr_blocks),
305 SECTOR_TO_BLOCK(inode->i_blocks));
306 return false;
307 }
308 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
309 ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) {
310 set_sbi_flag(sbi, SBI_NEED_FSCK);
311 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
312 "log cluster size: %u, run fsck to fix",
313 __func__, inode->i_ino,
314 ri->i_log_cluster_size);
315 return false;
316 }
317 }
318
319 return true;
320 }
321
init_idisk_time(struct inode * inode)322 static void init_idisk_time(struct inode *inode)
323 {
324 struct f2fs_inode_info *fi = F2FS_I(inode);
325
326 fi->i_disk_time[0] = inode->i_atime;
327 fi->i_disk_time[1] = inode->i_ctime;
328 fi->i_disk_time[2] = inode->i_mtime;
329 fi->i_disk_time[3] = fi->i_crtime;
330 }
331
do_read_inode(struct inode * inode)332 static int do_read_inode(struct inode *inode)
333 {
334 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
335 struct f2fs_inode_info *fi = F2FS_I(inode);
336 struct page *node_page;
337 struct f2fs_inode *ri;
338 projid_t i_projid;
339 int err;
340
341 /* Check if ino is within scope */
342 if (f2fs_check_nid_range(sbi, inode->i_ino))
343 return -EINVAL;
344
345 node_page = f2fs_get_node_page(sbi, inode->i_ino);
346 if (IS_ERR(node_page))
347 return PTR_ERR(node_page);
348
349 ri = F2FS_INODE(node_page);
350
351 inode->i_mode = le16_to_cpu(ri->i_mode);
352 i_uid_write(inode, le32_to_cpu(ri->i_uid));
353 i_gid_write(inode, le32_to_cpu(ri->i_gid));
354 set_nlink(inode, le32_to_cpu(ri->i_links));
355 inode->i_size = le64_to_cpu(ri->i_size);
356 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
357
358 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
359 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
360 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
361 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
362 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
363 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
364 inode->i_generation = le32_to_cpu(ri->i_generation);
365 if (S_ISDIR(inode->i_mode))
366 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
367 else if (S_ISREG(inode->i_mode))
368 fi->i_gc_failures[GC_FAILURE_PIN] =
369 le16_to_cpu(ri->i_gc_failures);
370 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
371 fi->i_flags = le32_to_cpu(ri->i_flags);
372 if (S_ISREG(inode->i_mode))
373 fi->i_flags &= ~F2FS_PROJINHERIT_FL;
374 bitmap_zero(fi->flags, FI_MAX);
375 fi->i_advise = ri->i_advise;
376 fi->i_pino = le32_to_cpu(ri->i_pino);
377 fi->i_dir_level = ri->i_dir_level;
378
379 get_inline_info(inode, ri);
380
381 fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
382 le16_to_cpu(ri->i_extra_isize) : 0;
383
384 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
385 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
386 } else if (f2fs_has_inline_xattr(inode) ||
387 f2fs_has_inline_dentry(inode)) {
388 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
389 } else {
390
391 /*
392 * Previous inline data or directory always reserved 200 bytes
393 * in inode layout, even if inline_xattr is disabled. In order
394 * to keep inline_dentry's structure for backward compatibility,
395 * we get the space back only from inline_data.
396 */
397 fi->i_inline_xattr_size = 0;
398 }
399
400 /* check data exist */
401 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
402 __recover_inline_status(inode, node_page);
403
404 /* try to recover cold bit for non-dir inode */
405 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) {
406 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
407 set_cold_node(node_page, false);
408 set_page_dirty(node_page);
409 }
410
411 /* get rdev by using inline_info */
412 __get_inode_rdev(inode, ri);
413
414 if (S_ISREG(inode->i_mode)) {
415 err = __written_first_block(sbi, ri);
416 if (err < 0) {
417 f2fs_put_page(node_page, 1);
418 return err;
419 }
420 if (!err)
421 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
422 }
423
424 if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
425 fi->last_disk_size = inode->i_size;
426
427 if (fi->i_flags & F2FS_PROJINHERIT_FL)
428 set_inode_flag(inode, FI_PROJ_INHERIT);
429
430 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) &&
431 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
432 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
433 else
434 i_projid = F2FS_DEF_PROJID;
435 fi->i_projid = make_kprojid(&init_user_ns, i_projid);
436
437 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) &&
438 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
439 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
440 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
441 }
442
443 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
444 (fi->i_flags & F2FS_COMPR_FL)) {
445 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
446 i_log_cluster_size)) {
447 unsigned short compress_flag;
448
449 atomic_set(&fi->i_compr_blocks,
450 le64_to_cpu(ri->i_compr_blocks));
451 fi->i_compress_algorithm = ri->i_compress_algorithm;
452 fi->i_log_cluster_size = ri->i_log_cluster_size;
453 compress_flag = le16_to_cpu(ri->i_compress_flag);
454 fi->i_compress_level = compress_flag >>
455 COMPRESS_LEVEL_OFFSET;
456 fi->i_compress_flag = compress_flag &
457 (BIT(COMPRESS_LEVEL_OFFSET) - 1);
458 fi->i_cluster_size = 1 << fi->i_log_cluster_size;
459 set_inode_flag(inode, FI_COMPRESSED_FILE);
460 }
461 }
462
463 init_idisk_time(inode);
464
465 /* Need all the flag bits */
466 f2fs_init_read_extent_tree(inode, node_page);
467 f2fs_init_age_extent_tree(inode);
468
469 if (!sanity_check_inode(inode, node_page)) {
470 f2fs_put_page(node_page, 1);
471 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
472 return -EFSCORRUPTED;
473 }
474
475 if (!sanity_check_extent_cache(inode)) {
476 f2fs_put_page(node_page, 1);
477 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
478 return -EFSCORRUPTED;
479 }
480
481 f2fs_put_page(node_page, 1);
482
483 stat_inc_inline_xattr(inode);
484 stat_inc_inline_inode(inode);
485 stat_inc_inline_dir(inode);
486 stat_inc_compr_inode(inode);
487 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks));
488
489 return 0;
490 }
491
is_meta_ino(struct f2fs_sb_info * sbi,unsigned int ino)492 static bool is_meta_ino(struct f2fs_sb_info *sbi, unsigned int ino)
493 {
494 return ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi) ||
495 ino == F2FS_COMPRESS_INO(sbi);
496 }
497
f2fs_iget(struct super_block * sb,unsigned long ino)498 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
499 {
500 struct f2fs_sb_info *sbi = F2FS_SB(sb);
501 struct inode *inode;
502 int ret = 0;
503
504 inode = iget_locked(sb, ino);
505 if (!inode)
506 return ERR_PTR(-ENOMEM);
507
508 if (!(inode->i_state & I_NEW)) {
509 if (is_meta_ino(sbi, ino)) {
510 f2fs_err(sbi, "inaccessible inode: %lu, run fsck to repair", ino);
511 set_sbi_flag(sbi, SBI_NEED_FSCK);
512 ret = -EFSCORRUPTED;
513 trace_f2fs_iget_exit(inode, ret);
514 iput(inode);
515 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
516 return ERR_PTR(ret);
517 }
518
519 trace_f2fs_iget(inode);
520 return inode;
521 }
522
523 if (is_meta_ino(sbi, ino))
524 goto make_now;
525
526 ret = do_read_inode(inode);
527 if (ret)
528 goto bad_inode;
529 make_now:
530 if (ino == F2FS_NODE_INO(sbi)) {
531 inode->i_mapping->a_ops = &f2fs_node_aops;
532 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
533 } else if (ino == F2FS_META_INO(sbi)) {
534 inode->i_mapping->a_ops = &f2fs_meta_aops;
535 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
536 } else if (ino == F2FS_COMPRESS_INO(sbi)) {
537 #ifdef CONFIG_F2FS_FS_COMPRESSION
538 inode->i_mapping->a_ops = &f2fs_compress_aops;
539 /*
540 * generic_error_remove_page only truncates pages of regular
541 * inode
542 */
543 inode->i_mode |= S_IFREG;
544 #endif
545 mapping_set_gfp_mask(inode->i_mapping,
546 GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE);
547 } else if (S_ISREG(inode->i_mode)) {
548 inode->i_op = &f2fs_file_inode_operations;
549 inode->i_fop = &f2fs_file_operations;
550 inode->i_mapping->a_ops = &f2fs_dblock_aops;
551 } else if (S_ISDIR(inode->i_mode)) {
552 inode->i_op = &f2fs_dir_inode_operations;
553 inode->i_fop = &f2fs_dir_operations;
554 inode->i_mapping->a_ops = &f2fs_dblock_aops;
555 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
556 } else if (S_ISLNK(inode->i_mode)) {
557 if (file_is_encrypt(inode))
558 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
559 else
560 inode->i_op = &f2fs_symlink_inode_operations;
561 inode_nohighmem(inode);
562 inode->i_mapping->a_ops = &f2fs_dblock_aops;
563 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
564 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
565 inode->i_op = &f2fs_special_inode_operations;
566 init_special_inode(inode, inode->i_mode, inode->i_rdev);
567 } else {
568 ret = -EIO;
569 goto bad_inode;
570 }
571 f2fs_set_inode_flags(inode);
572
573 if (file_should_truncate(inode) &&
574 !is_sbi_flag_set(sbi, SBI_POR_DOING)) {
575 ret = f2fs_truncate(inode);
576 if (ret)
577 goto bad_inode;
578 file_dont_truncate(inode);
579 }
580
581 unlock_new_inode(inode);
582 trace_f2fs_iget(inode);
583 return inode;
584
585 bad_inode:
586 f2fs_inode_synced(inode);
587 iget_failed(inode);
588 trace_f2fs_iget_exit(inode, ret);
589 return ERR_PTR(ret);
590 }
591
f2fs_iget_retry(struct super_block * sb,unsigned long ino)592 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
593 {
594 struct inode *inode;
595 retry:
596 inode = f2fs_iget(sb, ino);
597 if (IS_ERR(inode)) {
598 if (PTR_ERR(inode) == -ENOMEM) {
599 memalloc_retry_wait(GFP_NOFS);
600 goto retry;
601 }
602 }
603 return inode;
604 }
605
f2fs_update_inode(struct inode * inode,struct page * node_page)606 void f2fs_update_inode(struct inode *inode, struct page *node_page)
607 {
608 struct f2fs_inode *ri;
609 struct extent_tree *et = F2FS_I(inode)->extent_tree[EX_READ];
610
611 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
612 set_page_dirty(node_page);
613
614 f2fs_inode_synced(inode);
615
616 ri = F2FS_INODE(node_page);
617
618 ri->i_mode = cpu_to_le16(inode->i_mode);
619 ri->i_advise = F2FS_I(inode)->i_advise;
620 ri->i_uid = cpu_to_le32(i_uid_read(inode));
621 ri->i_gid = cpu_to_le32(i_gid_read(inode));
622 ri->i_links = cpu_to_le32(inode->i_nlink);
623 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
624
625 if (!f2fs_is_atomic_file(inode) ||
626 is_inode_flag_set(inode, FI_ATOMIC_COMMITTED))
627 ri->i_size = cpu_to_le64(i_size_read(inode));
628
629 if (et) {
630 read_lock(&et->lock);
631 set_raw_read_extent(&et->largest, &ri->i_ext);
632 read_unlock(&et->lock);
633 } else {
634 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
635 }
636 set_raw_inline(inode, ri);
637
638 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
639 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
640 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
641 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
642 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
643 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
644 if (S_ISDIR(inode->i_mode))
645 ri->i_current_depth =
646 cpu_to_le32(F2FS_I(inode)->i_current_depth);
647 else if (S_ISREG(inode->i_mode))
648 ri->i_gc_failures =
649 cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]);
650 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
651 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
652 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
653 ri->i_generation = cpu_to_le32(inode->i_generation);
654 ri->i_dir_level = F2FS_I(inode)->i_dir_level;
655
656 if (f2fs_has_extra_attr(inode)) {
657 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
658
659 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)))
660 ri->i_inline_xattr_size =
661 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
662
663 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) &&
664 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
665 i_projid)) {
666 projid_t i_projid;
667
668 i_projid = from_kprojid(&init_user_ns,
669 F2FS_I(inode)->i_projid);
670 ri->i_projid = cpu_to_le32(i_projid);
671 }
672
673 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
674 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
675 i_crtime)) {
676 ri->i_crtime =
677 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
678 ri->i_crtime_nsec =
679 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
680 }
681
682 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) &&
683 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
684 i_log_cluster_size)) {
685 unsigned short compress_flag;
686
687 ri->i_compr_blocks =
688 cpu_to_le64(atomic_read(
689 &F2FS_I(inode)->i_compr_blocks));
690 ri->i_compress_algorithm =
691 F2FS_I(inode)->i_compress_algorithm;
692 compress_flag = F2FS_I(inode)->i_compress_flag |
693 F2FS_I(inode)->i_compress_level <<
694 COMPRESS_LEVEL_OFFSET;
695 ri->i_compress_flag = cpu_to_le16(compress_flag);
696 ri->i_log_cluster_size =
697 F2FS_I(inode)->i_log_cluster_size;
698 }
699 }
700
701 __set_inode_rdev(inode, ri);
702
703 /* deleted inode */
704 if (inode->i_nlink == 0)
705 clear_page_private_inline(node_page);
706
707 init_idisk_time(inode);
708 #ifdef CONFIG_F2FS_CHECK_FS
709 f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);
710 #endif
711 }
712
f2fs_update_inode_page(struct inode * inode)713 void f2fs_update_inode_page(struct inode *inode)
714 {
715 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
716 struct page *node_page;
717 int count = 0;
718 retry:
719 node_page = f2fs_get_node_page(sbi, inode->i_ino);
720 if (IS_ERR(node_page)) {
721 int err = PTR_ERR(node_page);
722
723 /* The node block was truncated. */
724 if (err == -ENOENT)
725 return;
726
727 if (err == -ENOMEM || ++count <= DEFAULT_RETRY_IO_COUNT)
728 goto retry;
729 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_UPDATE_INODE);
730 return;
731 }
732 f2fs_update_inode(inode, node_page);
733 f2fs_put_page(node_page, 1);
734 }
735
f2fs_write_inode(struct inode * inode,struct writeback_control * wbc)736 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
737 {
738 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
739
740 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
741 inode->i_ino == F2FS_META_INO(sbi))
742 return 0;
743
744 /*
745 * atime could be updated without dirtying f2fs inode in lazytime mode
746 */
747 if (f2fs_is_time_consistent(inode) &&
748 !is_inode_flag_set(inode, FI_DIRTY_INODE))
749 return 0;
750
751 if (!f2fs_is_checkpoint_ready(sbi))
752 return -ENOSPC;
753
754 /*
755 * We need to balance fs here to prevent from producing dirty node pages
756 * during the urgent cleaning time when running out of free sections.
757 */
758 f2fs_update_inode_page(inode);
759 if (wbc && wbc->nr_to_write)
760 f2fs_balance_fs(sbi, true);
761 return 0;
762 }
763
764 /*
765 * Called at the last iput() if i_nlink is zero
766 */
f2fs_evict_inode(struct inode * inode)767 void f2fs_evict_inode(struct inode *inode)
768 {
769 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
770 struct f2fs_inode_info *fi = F2FS_I(inode);
771 nid_t xnid = fi->i_xattr_nid;
772 int err = 0;
773
774 f2fs_abort_atomic_write(inode, true);
775
776 if (fi->cow_inode) {
777 clear_inode_flag(fi->cow_inode, FI_COW_FILE);
778 iput(fi->cow_inode);
779 fi->cow_inode = NULL;
780 }
781
782 trace_f2fs_evict_inode(inode);
783 truncate_inode_pages_final(&inode->i_data);
784
785 if ((inode->i_nlink || is_bad_inode(inode)) &&
786 test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode))
787 f2fs_invalidate_compress_pages(sbi, inode->i_ino);
788
789 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
790 inode->i_ino == F2FS_META_INO(sbi) ||
791 inode->i_ino == F2FS_COMPRESS_INO(sbi))
792 goto out_clear;
793
794 f2fs_bug_on(sbi, get_dirty_pages(inode));
795 f2fs_remove_dirty_inode(inode);
796
797 f2fs_destroy_extent_tree(inode);
798
799 if (inode->i_nlink || is_bad_inode(inode))
800 goto no_delete;
801
802 err = f2fs_dquot_initialize(inode);
803 if (err) {
804 err = 0;
805 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
806 }
807
808 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
809 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
810 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
811
812 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING))
813 sb_start_intwrite(inode->i_sb);
814 set_inode_flag(inode, FI_NO_ALLOC);
815 i_size_write(inode, 0);
816 retry:
817 if (F2FS_HAS_BLOCKS(inode))
818 err = f2fs_truncate(inode);
819
820 if (time_to_inject(sbi, FAULT_EVICT_INODE))
821 err = -EIO;
822
823 if (!err) {
824 f2fs_lock_op(sbi);
825 err = f2fs_remove_inode_page(inode);
826 f2fs_unlock_op(sbi);
827 if (err == -ENOENT) {
828 err = 0;
829
830 /*
831 * in fuzzed image, another node may has the same
832 * block address as inode's, if it was truncated
833 * previously, truncation of inode node will fail.
834 */
835 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
836 f2fs_warn(F2FS_I_SB(inode),
837 "f2fs_evict_inode: inconsistent node id, ino:%lu",
838 inode->i_ino);
839 f2fs_inode_synced(inode);
840 set_sbi_flag(sbi, SBI_NEED_FSCK);
841 }
842 }
843 }
844
845 /* give more chances, if ENOMEM case */
846 if (err == -ENOMEM) {
847 err = 0;
848 goto retry;
849 }
850
851 if (err) {
852 f2fs_update_inode_page(inode);
853 if (dquot_initialize_needed(inode))
854 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
855 }
856 if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING))
857 sb_end_intwrite(inode->i_sb);
858 no_delete:
859 dquot_drop(inode);
860
861 stat_dec_inline_xattr(inode);
862 stat_dec_inline_dir(inode);
863 stat_dec_inline_inode(inode);
864 stat_dec_compr_inode(inode);
865 stat_sub_compr_blocks(inode,
866 atomic_read(&fi->i_compr_blocks));
867
868 if (likely(!f2fs_cp_error(sbi) &&
869 !is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
870 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
871 else
872 f2fs_inode_synced(inode);
873
874 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */
875 if (inode->i_ino)
876 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
877 inode->i_ino);
878 if (xnid)
879 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
880 if (inode->i_nlink) {
881 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
882 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);
883 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
884 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
885 }
886 if (is_inode_flag_set(inode, FI_FREE_NID)) {
887 f2fs_alloc_nid_failed(sbi, inode->i_ino);
888 clear_inode_flag(inode, FI_FREE_NID);
889 } else {
890 /*
891 * If xattr nid is corrupted, we can reach out error condition,
892 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).
893 * In that case, f2fs_check_nid_range() is enough to give a clue.
894 */
895 }
896 out_clear:
897 fscrypt_put_encryption_info(inode);
898 fsverity_cleanup_inode(inode);
899 clear_inode(inode);
900 }
901
902 /* caller should call f2fs_lock_op() */
f2fs_handle_failed_inode(struct inode * inode)903 void f2fs_handle_failed_inode(struct inode *inode)
904 {
905 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
906 struct node_info ni;
907 int err;
908
909 /*
910 * clear nlink of inode in order to release resource of inode
911 * immediately.
912 */
913 clear_nlink(inode);
914
915 /*
916 * we must call this to avoid inode being remained as dirty, resulting
917 * in a panic when flushing dirty inodes in gdirty_list.
918 */
919 f2fs_update_inode_page(inode);
920 f2fs_inode_synced(inode);
921
922 /* don't make bad inode, since it becomes a regular file. */
923 unlock_new_inode(inode);
924
925 /*
926 * Note: we should add inode to orphan list before f2fs_unlock_op()
927 * so we can prevent losing this orphan when encoutering checkpoint
928 * and following suddenly power-off.
929 */
930 err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false);
931 if (err) {
932 set_sbi_flag(sbi, SBI_NEED_FSCK);
933 set_inode_flag(inode, FI_FREE_NID);
934 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix.");
935 goto out;
936 }
937
938 if (ni.blk_addr != NULL_ADDR) {
939 err = f2fs_acquire_orphan_inode(sbi);
940 if (err) {
941 set_sbi_flag(sbi, SBI_NEED_FSCK);
942 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix.");
943 } else {
944 f2fs_add_orphan_inode(inode);
945 }
946 f2fs_alloc_nid_done(sbi, inode->i_ino);
947 } else {
948 set_inode_flag(inode, FI_FREE_NID);
949 }
950
951 out:
952 f2fs_unlock_op(sbi);
953
954 /* iput will drop the inode object */
955 iput(inode);
956 }
957