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 (ino_of_node(node_page) == fi->i_xattr_nid) {
251 f2fs_warn(sbi, "%s: corrupted inode i_ino=%lx, xnid=%x, run fsck to fix.",
252 __func__, inode->i_ino, fi->i_xattr_nid);
253 return false;
254 }
255
256 if (f2fs_has_extra_attr(inode) &&
257 f2fs_sb_has_flexible_inline_xattr(sbi) &&
258 f2fs_has_inline_xattr(inode) &&
259 (!fi->i_inline_xattr_size ||
260 fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) {
261 set_sbi_flag(sbi, SBI_NEED_FSCK);
262 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %zu",
263 __func__, inode->i_ino, fi->i_inline_xattr_size,
264 MAX_INLINE_XATTR_SIZE);
265 return false;
266 }
267
268 if (F2FS_I(inode)->extent_tree) {
269 struct extent_info *ei = &F2FS_I(inode)->extent_tree->largest;
270
271 if (ei->len &&
272 (!f2fs_is_valid_blkaddr(sbi, ei->blk,
273 DATA_GENERIC_ENHANCE) ||
274 !f2fs_is_valid_blkaddr(sbi, ei->blk + ei->len - 1,
275 DATA_GENERIC_ENHANCE))) {
276 set_sbi_flag(sbi, SBI_NEED_FSCK);
277 f2fs_warn(sbi, "%s: inode (ino=%lx) extent info [%u, %u, %u] is incorrect, run fsck to fix",
278 __func__, inode->i_ino,
279 ei->blk, ei->fofs, ei->len);
280 return false;
281 }
282 }
283
284 if (f2fs_sanity_check_inline_data(inode)) {
285 set_sbi_flag(sbi, SBI_NEED_FSCK);
286 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix",
287 __func__, inode->i_ino, inode->i_mode);
288 return false;
289 }
290
291 if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
292 set_sbi_flag(sbi, SBI_NEED_FSCK);
293 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix",
294 __func__, inode->i_ino, inode->i_mode);
295 return false;
296 }
297
298 if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) {
299 set_sbi_flag(sbi, SBI_NEED_FSCK);
300 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off",
301 __func__, inode->i_ino);
302 return false;
303 }
304
305 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
306 fi->i_flags & F2FS_COMPR_FL &&
307 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
308 i_log_cluster_size)) {
309 if (ri->i_compress_algorithm >= COMPRESS_MAX) {
310 set_sbi_flag(sbi, SBI_NEED_FSCK);
311 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
312 "compress algorithm: %u, run fsck to fix",
313 __func__, inode->i_ino,
314 ri->i_compress_algorithm);
315 return false;
316 }
317 if (le64_to_cpu(ri->i_compr_blocks) >
318 SECTOR_TO_BLOCK(inode->i_blocks)) {
319 set_sbi_flag(sbi, SBI_NEED_FSCK);
320 f2fs_warn(sbi, "%s: inode (ino=%lx) has inconsistent "
321 "i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix",
322 __func__, inode->i_ino,
323 le64_to_cpu(ri->i_compr_blocks),
324 SECTOR_TO_BLOCK(inode->i_blocks));
325 return false;
326 }
327 if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
328 ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) {
329 set_sbi_flag(sbi, SBI_NEED_FSCK);
330 f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported "
331 "log cluster size: %u, run fsck to fix",
332 __func__, inode->i_ino,
333 ri->i_log_cluster_size);
334 return false;
335 }
336 }
337
338 if (fi->i_xattr_nid && f2fs_check_nid_range(sbi, fi->i_xattr_nid)) {
339 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_xattr_nid: %u, run fsck to fix.",
340 __func__, inode->i_ino, fi->i_xattr_nid);
341 return false;
342 }
343
344 return true;
345 }
346
do_read_inode(struct inode * inode)347 static int do_read_inode(struct inode *inode)
348 {
349 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
350 struct f2fs_inode_info *fi = F2FS_I(inode);
351 struct page *node_page;
352 struct f2fs_inode *ri;
353 projid_t i_projid;
354 int err;
355
356 /* Check if ino is within scope */
357 if (f2fs_check_nid_range(sbi, inode->i_ino))
358 return -EINVAL;
359
360 node_page = f2fs_get_node_page(sbi, inode->i_ino);
361 if (IS_ERR(node_page))
362 return PTR_ERR(node_page);
363
364 ri = F2FS_INODE(node_page);
365
366 inode->i_mode = le16_to_cpu(ri->i_mode);
367 i_uid_write(inode, le32_to_cpu(ri->i_uid));
368 i_gid_write(inode, le32_to_cpu(ri->i_gid));
369 set_nlink(inode, le32_to_cpu(ri->i_links));
370 inode->i_size = le64_to_cpu(ri->i_size);
371 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
372
373 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
374 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
375 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
376 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
377 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
378 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
379 inode->i_generation = le32_to_cpu(ri->i_generation);
380 if (S_ISDIR(inode->i_mode))
381 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
382 else if (S_ISREG(inode->i_mode))
383 fi->i_gc_failures[GC_FAILURE_PIN] =
384 le16_to_cpu(ri->i_gc_failures);
385 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
386 fi->i_flags = le32_to_cpu(ri->i_flags);
387 if (S_ISREG(inode->i_mode))
388 fi->i_flags &= ~F2FS_PROJINHERIT_FL;
389 bitmap_zero(fi->flags, FI_MAX);
390 fi->i_advise = ri->i_advise;
391 fi->i_pino = le32_to_cpu(ri->i_pino);
392 fi->i_dir_level = ri->i_dir_level;
393
394 f2fs_init_extent_tree(inode, node_page);
395
396 get_inline_info(inode, ri);
397
398 fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
399 le16_to_cpu(ri->i_extra_isize) : 0;
400
401 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
402 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
403 } else if (f2fs_has_inline_xattr(inode) ||
404 f2fs_has_inline_dentry(inode)) {
405 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
406 } else {
407
408 /*
409 * Previous inline data or directory always reserved 200 bytes
410 * in inode layout, even if inline_xattr is disabled. In order
411 * to keep inline_dentry's structure for backward compatibility,
412 * we get the space back only from inline_data.
413 */
414 fi->i_inline_xattr_size = 0;
415 }
416
417 if (!sanity_check_inode(inode, node_page)) {
418 f2fs_put_page(node_page, 1);
419 return -EFSCORRUPTED;
420 }
421
422 /* check data exist */
423 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
424 __recover_inline_status(inode, node_page);
425
426 /* try to recover cold bit for non-dir inode */
427 if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) {
428 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
429 set_cold_node(node_page, false);
430 set_page_dirty(node_page);
431 }
432
433 /* get rdev by using inline_info */
434 __get_inode_rdev(inode, ri);
435
436 if (S_ISREG(inode->i_mode)) {
437 err = __written_first_block(sbi, ri);
438 if (err < 0) {
439 f2fs_put_page(node_page, 1);
440 return err;
441 }
442 if (!err)
443 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
444 }
445
446 if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
447 fi->last_disk_size = inode->i_size;
448
449 if (fi->i_flags & F2FS_PROJINHERIT_FL)
450 set_inode_flag(inode, FI_PROJ_INHERIT);
451
452 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) &&
453 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
454 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
455 else
456 i_projid = F2FS_DEF_PROJID;
457 fi->i_projid = make_kprojid(&init_user_ns, i_projid);
458
459 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) &&
460 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
461 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
462 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
463 }
464
465 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
466 (fi->i_flags & F2FS_COMPR_FL)) {
467 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
468 i_log_cluster_size)) {
469 atomic_set(&fi->i_compr_blocks,
470 le64_to_cpu(ri->i_compr_blocks));
471 fi->i_compress_algorithm = ri->i_compress_algorithm;
472 fi->i_log_cluster_size = ri->i_log_cluster_size;
473 fi->i_cluster_size = 1 << fi->i_log_cluster_size;
474 set_inode_flag(inode, FI_COMPRESSED_FILE);
475 }
476 }
477
478 F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
479 F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
480 F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
481 F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
482 f2fs_put_page(node_page, 1);
483
484 stat_inc_inline_xattr(inode);
485 stat_inc_inline_inode(inode);
486 stat_inc_inline_dir(inode);
487 stat_inc_compr_inode(inode);
488 stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks));
489
490 return 0;
491 }
492
f2fs_iget(struct super_block * sb,unsigned long ino)493 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
494 {
495 struct f2fs_sb_info *sbi = F2FS_SB(sb);
496 struct inode *inode;
497 int ret = 0;
498
499 inode = iget_locked(sb, ino);
500 if (!inode)
501 return ERR_PTR(-ENOMEM);
502
503 if (!(inode->i_state & I_NEW)) {
504 trace_f2fs_iget(inode);
505 return inode;
506 }
507 if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
508 goto make_now;
509
510 ret = do_read_inode(inode);
511 if (ret)
512 goto bad_inode;
513 make_now:
514 if (ino == F2FS_NODE_INO(sbi)) {
515 inode->i_mapping->a_ops = &f2fs_node_aops;
516 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
517 } else if (ino == F2FS_META_INO(sbi)) {
518 inode->i_mapping->a_ops = &f2fs_meta_aops;
519 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
520 } else if (S_ISREG(inode->i_mode)) {
521 inode->i_op = &f2fs_file_inode_operations;
522 inode->i_fop = &f2fs_file_operations;
523 inode->i_mapping->a_ops = &f2fs_dblock_aops;
524 } else if (S_ISDIR(inode->i_mode)) {
525 inode->i_op = &f2fs_dir_inode_operations;
526 inode->i_fop = &f2fs_dir_operations;
527 inode->i_mapping->a_ops = &f2fs_dblock_aops;
528 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
529 } else if (S_ISLNK(inode->i_mode)) {
530 if (file_is_encrypt(inode))
531 inode->i_op = &f2fs_encrypted_symlink_inode_operations;
532 else
533 inode->i_op = &f2fs_symlink_inode_operations;
534 inode_nohighmem(inode);
535 inode->i_mapping->a_ops = &f2fs_dblock_aops;
536 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
537 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
538 inode->i_op = &f2fs_special_inode_operations;
539 init_special_inode(inode, inode->i_mode, inode->i_rdev);
540 } else {
541 ret = -EIO;
542 goto bad_inode;
543 }
544 f2fs_set_inode_flags(inode);
545 unlock_new_inode(inode);
546 trace_f2fs_iget(inode);
547 return inode;
548
549 bad_inode:
550 f2fs_inode_synced(inode);
551 iget_failed(inode);
552 trace_f2fs_iget_exit(inode, ret);
553 return ERR_PTR(ret);
554 }
555
f2fs_iget_retry(struct super_block * sb,unsigned long ino)556 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
557 {
558 struct inode *inode;
559 retry:
560 inode = f2fs_iget(sb, ino);
561 if (IS_ERR(inode)) {
562 if (PTR_ERR(inode) == -ENOMEM) {
563 congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
564 goto retry;
565 }
566 }
567 return inode;
568 }
569
f2fs_update_inode(struct inode * inode,struct page * node_page)570 void f2fs_update_inode(struct inode *inode, struct page *node_page)
571 {
572 struct f2fs_inode *ri;
573 struct extent_tree *et = F2FS_I(inode)->extent_tree;
574
575 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
576 set_page_dirty(node_page);
577
578 f2fs_inode_synced(inode);
579
580 ri = F2FS_INODE(node_page);
581
582 ri->i_mode = cpu_to_le16(inode->i_mode);
583 ri->i_advise = F2FS_I(inode)->i_advise;
584 ri->i_uid = cpu_to_le32(i_uid_read(inode));
585 ri->i_gid = cpu_to_le32(i_gid_read(inode));
586 ri->i_links = cpu_to_le32(inode->i_nlink);
587 ri->i_size = cpu_to_le64(i_size_read(inode));
588 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
589
590 if (et) {
591 read_lock(&et->lock);
592 set_raw_extent(&et->largest, &ri->i_ext);
593 read_unlock(&et->lock);
594 } else {
595 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
596 }
597 set_raw_inline(inode, ri);
598
599 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
600 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
601 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
602 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
603 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
604 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
605 if (S_ISDIR(inode->i_mode))
606 ri->i_current_depth =
607 cpu_to_le32(F2FS_I(inode)->i_current_depth);
608 else if (S_ISREG(inode->i_mode))
609 ri->i_gc_failures =
610 cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]);
611 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
612 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
613 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
614 ri->i_generation = cpu_to_le32(inode->i_generation);
615 ri->i_dir_level = F2FS_I(inode)->i_dir_level;
616
617 if (f2fs_has_extra_attr(inode)) {
618 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
619
620 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)))
621 ri->i_inline_xattr_size =
622 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
623
624 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) &&
625 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
626 i_projid)) {
627 projid_t i_projid;
628
629 i_projid = from_kprojid(&init_user_ns,
630 F2FS_I(inode)->i_projid);
631 ri->i_projid = cpu_to_le32(i_projid);
632 }
633
634 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
635 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
636 i_crtime)) {
637 ri->i_crtime =
638 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
639 ri->i_crtime_nsec =
640 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
641 }
642
643 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) &&
644 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
645 i_log_cluster_size)) {
646 ri->i_compr_blocks =
647 cpu_to_le64(atomic_read(
648 &F2FS_I(inode)->i_compr_blocks));
649 ri->i_compress_algorithm =
650 F2FS_I(inode)->i_compress_algorithm;
651 ri->i_log_cluster_size =
652 F2FS_I(inode)->i_log_cluster_size;
653 }
654 }
655
656 __set_inode_rdev(inode, ri);
657
658 /* deleted inode */
659 if (inode->i_nlink == 0)
660 clear_inline_node(node_page);
661
662 F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
663 F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
664 F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
665 F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
666
667 #ifdef CONFIG_F2FS_CHECK_FS
668 f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);
669 #endif
670 }
671
f2fs_update_inode_page(struct inode * inode)672 void f2fs_update_inode_page(struct inode *inode)
673 {
674 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
675 struct page *node_page;
676 retry:
677 node_page = f2fs_get_node_page(sbi, inode->i_ino);
678 if (IS_ERR(node_page)) {
679 int err = PTR_ERR(node_page);
680 if (err == -ENOMEM) {
681 cond_resched();
682 goto retry;
683 } else if (err != -ENOENT) {
684 f2fs_stop_checkpoint(sbi, false);
685 }
686 return;
687 }
688 f2fs_update_inode(inode, node_page);
689 f2fs_put_page(node_page, 1);
690 }
691
f2fs_write_inode(struct inode * inode,struct writeback_control * wbc)692 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
693 {
694 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
695
696 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
697 inode->i_ino == F2FS_META_INO(sbi))
698 return 0;
699
700 /*
701 * atime could be updated without dirtying f2fs inode in lazytime mode
702 */
703 if (f2fs_is_time_consistent(inode) &&
704 !is_inode_flag_set(inode, FI_DIRTY_INODE))
705 return 0;
706
707 if (!f2fs_is_checkpoint_ready(sbi)) {
708 f2fs_mark_inode_dirty_sync(inode, true);
709 return -ENOSPC;
710 }
711
712 /*
713 * We need to balance fs here to prevent from producing dirty node pages
714 * during the urgent cleaning time when runing out of free sections.
715 */
716 f2fs_update_inode_page(inode);
717 if (wbc && wbc->nr_to_write)
718 f2fs_balance_fs(sbi, true);
719 return 0;
720 }
721
722 /*
723 * Called at the last iput() if i_nlink is zero
724 */
f2fs_evict_inode(struct inode * inode)725 void f2fs_evict_inode(struct inode *inode)
726 {
727 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
728 nid_t xnid = F2FS_I(inode)->i_xattr_nid;
729 int err = 0;
730
731 /* some remained atomic pages should discarded */
732 if (f2fs_is_atomic_file(inode))
733 f2fs_drop_inmem_pages(inode);
734
735 trace_f2fs_evict_inode(inode);
736 truncate_inode_pages_final(&inode->i_data);
737
738 if (inode->i_ino == F2FS_NODE_INO(sbi) ||
739 inode->i_ino == F2FS_META_INO(sbi))
740 goto out_clear;
741
742 f2fs_bug_on(sbi, get_dirty_pages(inode));
743 f2fs_remove_dirty_inode(inode);
744
745 f2fs_destroy_extent_tree(inode);
746
747 if (inode->i_nlink || is_bad_inode(inode))
748 goto no_delete;
749
750 err = dquot_initialize(inode);
751 if (err) {
752 err = 0;
753 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
754 }
755
756 f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
757 f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
758 f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
759
760 sb_start_intwrite(inode->i_sb);
761 set_inode_flag(inode, FI_NO_ALLOC);
762 i_size_write(inode, 0);
763 retry:
764 if (F2FS_HAS_BLOCKS(inode))
765 err = f2fs_truncate(inode);
766
767 if (time_to_inject(sbi, FAULT_EVICT_INODE)) {
768 f2fs_show_injection_info(sbi, FAULT_EVICT_INODE);
769 err = -EIO;
770 }
771
772 if (!err) {
773 f2fs_lock_op(sbi);
774 err = f2fs_remove_inode_page(inode);
775 f2fs_unlock_op(sbi);
776 if (err == -ENOENT) {
777 err = 0;
778
779 /*
780 * in fuzzed image, another node may has the same
781 * block address as inode's, if it was truncated
782 * previously, truncation of inode node will fail.
783 */
784 if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
785 f2fs_warn(F2FS_I_SB(inode),
786 "f2fs_evict_inode: inconsistent node id, ino:%lu",
787 inode->i_ino);
788 f2fs_inode_synced(inode);
789 set_sbi_flag(sbi, SBI_NEED_FSCK);
790 }
791 }
792 }
793
794 /* give more chances, if ENOMEM case */
795 if (err == -ENOMEM) {
796 err = 0;
797 goto retry;
798 }
799
800 if (err) {
801 f2fs_update_inode_page(inode);
802 if (dquot_initialize_needed(inode))
803 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
804 }
805 sb_end_intwrite(inode->i_sb);
806 no_delete:
807 dquot_drop(inode);
808
809 stat_dec_inline_xattr(inode);
810 stat_dec_inline_dir(inode);
811 stat_dec_inline_inode(inode);
812 stat_dec_compr_inode(inode);
813 stat_sub_compr_blocks(inode,
814 atomic_read(&F2FS_I(inode)->i_compr_blocks));
815
816 if (likely(!f2fs_cp_error(sbi) &&
817 !is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
818 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
819 else
820 f2fs_inode_synced(inode);
821
822 /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */
823 if (inode->i_ino)
824 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
825 inode->i_ino);
826 if (xnid)
827 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
828 if (inode->i_nlink) {
829 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
830 f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);
831 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
832 f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
833 }
834 if (is_inode_flag_set(inode, FI_FREE_NID)) {
835 f2fs_alloc_nid_failed(sbi, inode->i_ino);
836 clear_inode_flag(inode, FI_FREE_NID);
837 } else {
838 /*
839 * If xattr nid is corrupted, we can reach out error condition,
840 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).
841 * In that case, f2fs_check_nid_range() is enough to give a clue.
842 */
843 }
844 out_clear:
845 fscrypt_put_encryption_info(inode);
846 fsverity_cleanup_inode(inode);
847 clear_inode(inode);
848 }
849
850 /* caller should call f2fs_lock_op() */
f2fs_handle_failed_inode(struct inode * inode)851 void f2fs_handle_failed_inode(struct inode *inode)
852 {
853 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
854 struct node_info ni;
855 int err;
856
857 /*
858 * clear nlink of inode in order to release resource of inode
859 * immediately.
860 */
861 clear_nlink(inode);
862
863 /*
864 * we must call this to avoid inode being remained as dirty, resulting
865 * in a panic when flushing dirty inodes in gdirty_list.
866 */
867 f2fs_update_inode_page(inode);
868 f2fs_inode_synced(inode);
869
870 /* don't make bad inode, since it becomes a regular file. */
871 unlock_new_inode(inode);
872
873 /*
874 * Note: we should add inode to orphan list before f2fs_unlock_op()
875 * so we can prevent losing this orphan when encoutering checkpoint
876 * and following suddenly power-off.
877 */
878 err = f2fs_get_node_info(sbi, inode->i_ino, &ni);
879 if (err) {
880 set_sbi_flag(sbi, SBI_NEED_FSCK);
881 set_inode_flag(inode, FI_FREE_NID);
882 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix.");
883 goto out;
884 }
885
886 if (ni.blk_addr != NULL_ADDR) {
887 err = f2fs_acquire_orphan_inode(sbi);
888 if (err) {
889 set_sbi_flag(sbi, SBI_NEED_FSCK);
890 f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix.");
891 } else {
892 f2fs_add_orphan_inode(inode);
893 }
894 f2fs_alloc_nid_done(sbi, inode->i_ino);
895 } else {
896 set_inode_flag(inode, FI_FREE_NID);
897 }
898
899 out:
900 f2fs_unlock_op(sbi);
901
902 /* iput will drop the inode object */
903 iput(inode);
904 }
905