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_has_inline_data(inode) &&
276 (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode))) {
277 set_sbi_flag(sbi, SBI_NEED_FSCK);
278 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix",
279 __func__, inode->i_ino, inode->i_mode);
280 return false;
281 }
282
283 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
284 set_sbi_flag(sbi, SBI_NEED_FSCK);
285 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix",
286 __func__, inode->i_ino, inode->i_mode);
287 return false;
288 }
289
290 if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) {
291 set_sbi_flag(sbi, SBI_NEED_FSCK);
292 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off",
293 __func__, inode->i_ino);
294 return false;
295 }
296
297 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
298 fi->i_flags & F2FS_COMPR_FL &&
299 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
300 i_log_cluster_size)) {
301 if (ri->i_compress_algorithm >= COMPRESS_MAX) {
302 set_sbi_flag(sbi, SBI_NEED_FSCK);
303 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
304 "compress algorithm: %u, run fsck to fix",
305 __func__, inode->i_ino,
306 ri->i_compress_algorithm);
307 return false;
308 }
309 if (le64_to_cpu(ri->i_compr_blocks) >
310 SECTOR_TO_BLOCK(inode->i_blocks)) {
311 set_sbi_flag(sbi, SBI_NEED_FSCK);
312 f2fs_warn(sbi, "%s: inode (ino=%lx) has inconsistent "
313 "i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix",
314 __func__, inode->i_ino,
315 le64_to_cpu(ri->i_compr_blocks),
316 SECTOR_TO_BLOCK(inode->i_blocks));
317 return false;
318 }
319 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
320 ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) {
321 set_sbi_flag(sbi, SBI_NEED_FSCK);
322 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
323 "log cluster size: %u, run fsck to fix",
324 __func__, inode->i_ino,
325 ri->i_log_cluster_size);
326 return false;
327 }
328 }
329
330 return true;
331 }
332
do_read_inode(struct inode * inode)333 static int do_read_inode(struct inode *inode)
334 {
335 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
336 struct f2fs_inode_info *fi = F2FS_I(inode);
337 struct page *node_page;
338 struct f2fs_inode *ri;
339 projid_t i_projid;
340 int err;
341
342 /* Check if ino is within scope */
343 if (f2fs_check_nid_range(sbi, inode->i_ino))
344 return -EINVAL;
345
346 node_page = f2fs_get_node_page(sbi, inode->i_ino);
347 if (IS_ERR(node_page))
348 return PTR_ERR(node_page);
349
350 ri = F2FS_INODE(node_page);
351
352 inode->i_mode = le16_to_cpu(ri->i_mode);
353 i_uid_write(inode, le32_to_cpu(ri->i_uid));
354 i_gid_write(inode, le32_to_cpu(ri->i_gid));
355 set_nlink(inode, le32_to_cpu(ri->i_links));
356 inode->i_size = le64_to_cpu(ri->i_size);
357 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
358
359 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
360 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
361 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
362 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
363 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
364 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
365 inode->i_generation = le32_to_cpu(ri->i_generation);
366 if (S_ISDIR(inode->i_mode))
367 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
368 else if (S_ISREG(inode->i_mode))
369 fi->i_gc_failures[GC_FAILURE_PIN] =
370 le16_to_cpu(ri->i_gc_failures);
371 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
372 fi->i_flags = le32_to_cpu(ri->i_flags);
373 if (S_ISREG(inode->i_mode))
374 fi->i_flags &= ~F2FS_PROJINHERIT_FL;
375 bitmap_zero(fi->flags, FI_MAX);
376 fi->i_advise = ri->i_advise;
377 fi->i_pino = le32_to_cpu(ri->i_pino);
378 fi->i_dir_level = ri->i_dir_level;
379
380 f2fs_init_extent_tree(inode, node_page);
381
382 get_inline_info(inode, ri);
383
384 fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
385 le16_to_cpu(ri->i_extra_isize) : 0;
386
387 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
388 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
389 } else if (f2fs_has_inline_xattr(inode) ||
390 f2fs_has_inline_dentry(inode)) {
391 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
392 } else {
393
394 /*
395 * Previous inline data or directory always reserved 200 bytes
396 * in inode layout, even if inline_xattr is disabled. In order
397 * to keep inline_dentry's structure for backward compatibility,
398 * we get the space back only from inline_data.
399 */
400 fi->i_inline_xattr_size = 0;
401 }
402
403 if (!sanity_check_inode(inode, node_page)) {
404 f2fs_put_page(node_page, 1);
405 return -EFSCORRUPTED;
406 }
407
408 /* check data exist */
409 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
410 __recover_inline_status(inode, node_page);
411
412 /* try to recover cold bit for non-dir inode */
413 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) {
414 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
415 set_cold_node(node_page, false);
416 set_page_dirty(node_page);
417 }
418
419 /* get rdev by using inline_info */
420 __get_inode_rdev(inode, ri);
421
422 if (S_ISREG(inode->i_mode)) {
423 err = __written_first_block(sbi, ri);
424 if (err < 0) {
425 f2fs_put_page(node_page, 1);
426 return err;
427 }
428 if (!err)
429 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
430 }
431
432 if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
433 fi->last_disk_size = inode->i_size;
434
435 if (fi->i_flags & F2FS_PROJINHERIT_FL)
436 set_inode_flag(inode, FI_PROJ_INHERIT);
437
438 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) &&
439 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
440 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
441 else
442 i_projid = F2FS_DEF_PROJID;
443 fi->i_projid = make_kprojid(&init_user_ns, i_projid);
444
445 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) &&
446 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
447 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
448 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
449 }
450
451 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
452 (fi->i_flags & F2FS_COMPR_FL)) {
453 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
454 i_log_cluster_size)) {
455 atomic_set(&fi->i_compr_blocks,
456 le64_to_cpu(ri->i_compr_blocks));
457 fi->i_compress_algorithm = ri->i_compress_algorithm;
458 fi->i_log_cluster_size = ri->i_log_cluster_size;
459 fi->i_cluster_size = 1 << fi->i_log_cluster_size;
460 set_inode_flag(inode, FI_COMPRESSED_FILE);
461 }
462 }
463
464 F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
465 F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
466 F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
467 F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
468 f2fs_put_page(node_page, 1);
469
470 stat_inc_inline_xattr(inode);
471 stat_inc_inline_inode(inode);
472 stat_inc_inline_dir(inode);
473 stat_inc_compr_inode(inode);
474 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks));
475
476 return 0;
477 }
478
f2fs_iget(struct super_block * sb,unsigned long ino)479 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
480 {
481 struct f2fs_sb_info *sbi = F2FS_SB(sb);
482 struct inode *inode;
483 int ret = 0;
484
485 inode = iget_locked(sb, ino);
486 if (!inode)
487 return ERR_PTR(-ENOMEM);
488
489 if (!(inode->i_state & I_NEW)) {
490 trace_f2fs_iget(inode);
491 return inode;
492 }
493 if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
494 goto make_now;
495
496 ret = do_read_inode(inode);
497 if (ret)
498 goto bad_inode;
499 make_now:
500 if (ino == F2FS_NODE_INO(sbi)) {
501 inode->i_mapping->a_ops = &f2fs_node_aops;
502 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
503 } else if (ino == F2FS_META_INO(sbi)) {
504 inode->i_mapping->a_ops = &f2fs_meta_aops;
505 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
506 } else if (S_ISREG(inode->i_mode)) {
507 inode->i_op = &f2fs_file_inode_operations;
508 inode->i_fop = &f2fs_file_operations;
509 inode->i_mapping->a_ops = &f2fs_dblock_aops;
510 } else if (S_ISDIR(inode->i_mode)) {
511 inode->i_op = &f2fs_dir_inode_operations;
512 inode->i_fop = &f2fs_dir_operations;
513 inode->i_mapping->a_ops = &f2fs_dblock_aops;
514 inode_nohighmem(inode);
515 } else if (S_ISLNK(inode->i_mode)) {
516 if (file_is_encrypt(inode))
517 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
518 else
519 inode->i_op = &f2fs_symlink_inode_operations;
520 inode_nohighmem(inode);
521 inode->i_mapping->a_ops = &f2fs_dblock_aops;
522 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
523 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
524 inode->i_op = &f2fs_special_inode_operations;
525 init_special_inode(inode, inode->i_mode, inode->i_rdev);
526 } else {
527 ret = -EIO;
528 goto bad_inode;
529 }
530 f2fs_set_inode_flags(inode);
531 unlock_new_inode(inode);
532 trace_f2fs_iget(inode);
533 return inode;
534
535 bad_inode:
536 f2fs_inode_synced(inode);
537 iget_failed(inode);
538 trace_f2fs_iget_exit(inode, ret);
539 return ERR_PTR(ret);
540 }
541
f2fs_iget_retry(struct super_block * sb,unsigned long ino)542 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
543 {
544 struct inode *inode;
545 retry:
546 inode = f2fs_iget(sb, ino);
547 if (IS_ERR(inode)) {
548 if (PTR_ERR(inode) == -ENOMEM) {
549 congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
550 goto retry;
551 }
552 }
553 return inode;
554 }
555
f2fs_update_inode(struct inode * inode,struct page * node_page)556 void f2fs_update_inode(struct inode *inode, struct page *node_page)
557 {
558 struct f2fs_inode *ri;
559 struct extent_tree *et = F2FS_I(inode)->extent_tree;
560
561 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
562 set_page_dirty(node_page);
563
564 f2fs_inode_synced(inode);
565
566 ri = F2FS_INODE(node_page);
567
568 ri->i_mode = cpu_to_le16(inode->i_mode);
569 ri->i_advise = F2FS_I(inode)->i_advise;
570 ri->i_uid = cpu_to_le32(i_uid_read(inode));
571 ri->i_gid = cpu_to_le32(i_gid_read(inode));
572 ri->i_links = cpu_to_le32(inode->i_nlink);
573 ri->i_size = cpu_to_le64(i_size_read(inode));
574 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
575
576 if (et) {
577 read_lock(&et->lock);
578 set_raw_extent(&et->largest, &ri->i_ext);
579 read_unlock(&et->lock);
580 } else {
581 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
582 }
583 set_raw_inline(inode, ri);
584
585 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
586 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
587 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
588 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
589 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
590 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
591 if (S_ISDIR(inode->i_mode))
592 ri->i_current_depth =
593 cpu_to_le32(F2FS_I(inode)->i_current_depth);
594 else if (S_ISREG(inode->i_mode))
595 ri->i_gc_failures =
596 cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]);
597 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
598 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
599 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
600 ri->i_generation = cpu_to_le32(inode->i_generation);
601 ri->i_dir_level = F2FS_I(inode)->i_dir_level;
602
603 if (f2fs_has_extra_attr(inode)) {
604 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
605
606 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)))
607 ri->i_inline_xattr_size =
608 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
609
610 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) &&
611 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
612 i_projid)) {
613 projid_t i_projid;
614
615 i_projid = from_kprojid(&init_user_ns,
616 F2FS_I(inode)->i_projid);
617 ri->i_projid = cpu_to_le32(i_projid);
618 }
619
620 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
621 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
622 i_crtime)) {
623 ri->i_crtime =
624 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
625 ri->i_crtime_nsec =
626 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
627 }
628
629 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) &&
630 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
631 i_log_cluster_size)) {
632 ri->i_compr_blocks =
633 cpu_to_le64(atomic_read(
634 &F2FS_I(inode)->i_compr_blocks));
635 ri->i_compress_algorithm =
636 F2FS_I(inode)->i_compress_algorithm;
637 ri->i_log_cluster_size =
638 F2FS_I(inode)->i_log_cluster_size;
639 }
640 }
641
642 __set_inode_rdev(inode, ri);
643
644 /* deleted inode */
645 if (inode->i_nlink == 0)
646 clear_inline_node(node_page);
647
648 F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
649 F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
650 F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
651 F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
652
653 #ifdef CONFIG_F2FS_CHECK_FS
654 f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);
655 #endif
656 }
657
f2fs_update_inode_page(struct inode * inode)658 void f2fs_update_inode_page(struct inode *inode)
659 {
660 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
661 struct page *node_page;
662 retry:
663 node_page = f2fs_get_node_page(sbi, inode->i_ino);
664 if (IS_ERR(node_page)) {
665 int err = PTR_ERR(node_page);
666 if (err == -ENOMEM) {
667 cond_resched();
668 goto retry;
669 } else if (err != -ENOENT) {
670 f2fs_stop_checkpoint(sbi, false);
671 }
672 return;
673 }
674 f2fs_update_inode(inode, node_page);
675 f2fs_put_page(node_page, 1);
676 }
677
f2fs_write_inode(struct inode * inode,struct writeback_control * wbc)678 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
679 {
680 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
681
682 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
683 inode->i_ino == F2FS_META_INO(sbi))
684 return 0;
685
686 /*
687 * atime could be updated without dirtying f2fs inode in lazytime mode
688 */
689 if (f2fs_is_time_consistent(inode) &&
690 !is_inode_flag_set(inode, FI_DIRTY_INODE))
691 return 0;
692
693 if (!f2fs_is_checkpoint_ready(sbi))
694 return -ENOSPC;
695
696 /*
697 * We need to balance fs here to prevent from producing dirty node pages
698 * during the urgent cleaning time when runing out of free sections.
699 */
700 f2fs_update_inode_page(inode);
701 if (wbc && wbc->nr_to_write)
702 f2fs_balance_fs(sbi, true);
703 return 0;
704 }
705
706 /*
707 * Called at the last iput() if i_nlink is zero
708 */
f2fs_evict_inode(struct inode * inode)709 void f2fs_evict_inode(struct inode *inode)
710 {
711 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
712 nid_t xnid = F2FS_I(inode)->i_xattr_nid;
713 int err = 0;
714
715 /* some remained atomic pages should discarded */
716 if (f2fs_is_atomic_file(inode))
717 f2fs_drop_inmem_pages(inode);
718
719 trace_f2fs_evict_inode(inode);
720 truncate_inode_pages_final(&inode->i_data);
721
722 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
723 inode->i_ino == F2FS_META_INO(sbi))
724 goto out_clear;
725
726 f2fs_bug_on(sbi, get_dirty_pages(inode));
727 f2fs_remove_dirty_inode(inode);
728
729 f2fs_destroy_extent_tree(inode);
730
731 if (inode->i_nlink || is_bad_inode(inode))
732 goto no_delete;
733
734 err = dquot_initialize(inode);
735 if (err) {
736 err = 0;
737 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
738 }
739
740 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
741 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
742 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
743
744 sb_start_intwrite(inode->i_sb);
745 set_inode_flag(inode, FI_NO_ALLOC);
746 i_size_write(inode, 0);
747 retry:
748 if (F2FS_HAS_BLOCKS(inode))
749 err = f2fs_truncate(inode);
750
751 if (time_to_inject(sbi, FAULT_EVICT_INODE)) {
752 f2fs_show_injection_info(sbi, FAULT_EVICT_INODE);
753 err = -EIO;
754 }
755
756 if (!err) {
757 f2fs_lock_op(sbi);
758 err = f2fs_remove_inode_page(inode);
759 f2fs_unlock_op(sbi);
760 if (err == -ENOENT)
761 err = 0;
762 }
763
764 /* give more chances, if ENOMEM case */
765 if (err == -ENOMEM) {
766 err = 0;
767 goto retry;
768 }
769
770 if (err) {
771 f2fs_update_inode_page(inode);
772 if (dquot_initialize_needed(inode))
773 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
774 }
775 sb_end_intwrite(inode->i_sb);
776 no_delete:
777 dquot_drop(inode);
778
779 stat_dec_inline_xattr(inode);
780 stat_dec_inline_dir(inode);
781 stat_dec_inline_inode(inode);
782 stat_dec_compr_inode(inode);
783 stat_sub_compr_blocks(inode,
784 atomic_read(&F2FS_I(inode)->i_compr_blocks));
785
786 if (likely(!f2fs_cp_error(sbi) &&
787 !is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
788 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
789 else
790 f2fs_inode_synced(inode);
791
792 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */
793 if (inode->i_ino)
794 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
795 inode->i_ino);
796 if (xnid)
797 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
798 if (inode->i_nlink) {
799 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
800 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);
801 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
802 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
803 }
804 if (is_inode_flag_set(inode, FI_FREE_NID)) {
805 f2fs_alloc_nid_failed(sbi, inode->i_ino);
806 clear_inode_flag(inode, FI_FREE_NID);
807 } else {
808 /*
809 * If xattr nid is corrupted, we can reach out error condition,
810 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).
811 * In that case, f2fs_check_nid_range() is enough to give a clue.
812 */
813 }
814 out_clear:
815 fscrypt_put_encryption_info(inode);
816 fsverity_cleanup_inode(inode);
817 clear_inode(inode);
818 }
819
820 /* caller should call f2fs_lock_op() */
f2fs_handle_failed_inode(struct inode * inode)821 void f2fs_handle_failed_inode(struct inode *inode)
822 {
823 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
824 struct node_info ni;
825 int err;
826
827 /*
828 * clear nlink of inode in order to release resource of inode
829 * immediately.
830 */
831 clear_nlink(inode);
832
833 /*
834 * we must call this to avoid inode being remained as dirty, resulting
835 * in a panic when flushing dirty inodes in gdirty_list.
836 */
837 f2fs_update_inode_page(inode);
838 f2fs_inode_synced(inode);
839
840 /* don't make bad inode, since it becomes a regular file. */
841 unlock_new_inode(inode);
842
843 /*
844 * Note: we should add inode to orphan list before f2fs_unlock_op()
845 * so we can prevent losing this orphan when encoutering checkpoint
846 * and following suddenly power-off.
847 */
848 err = f2fs_get_node_info(sbi, inode->i_ino, &ni);
849 if (err) {
850 set_sbi_flag(sbi, SBI_NEED_FSCK);
851 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix.");
852 goto out;
853 }
854
855 if (ni.blk_addr != NULL_ADDR) {
856 err = f2fs_acquire_orphan_inode(sbi);
857 if (err) {
858 set_sbi_flag(sbi, SBI_NEED_FSCK);
859 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix.");
860 } else {
861 f2fs_add_orphan_inode(inode);
862 }
863 f2fs_alloc_nid_done(sbi, inode->i_ino);
864 } else {
865 set_inode_flag(inode, FI_FREE_NID);
866 }
867
868 out:
869 f2fs_unlock_op(sbi);
870
871 /* iput will drop the inode object */
872 iput(inode);
873 }
874
