fs/f2fs/inode.c

   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 #include <linux/lz4.h>
  14 #include <linux/zstd.h>
  15
  16 #include "f2fs.h"
  17 #include "node.h"
  18 #include "segment.h"
  19 #include "xattr.h"
  20
  21 #include <trace/events/f2fs.h>
  22
  23 #ifdef CONFIG_F2FS_FS_COMPRESSION
  24 extern const struct address_space_operations f2fs_compress_aops;
  25 #endif
  26
  27 void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync)
  28 {
  29         if (is_inode_flag_set(inode, FI_NEW_INODE))
  30                 return;
  31
  32         if (f2fs_inode_dirtied(inode, sync))
  33                 return;
  34
  35         mark_inode_dirty_sync(inode);
  36 }
  37
  38 void f2fs_set_inode_flags(struct inode *inode)
  39 {
  40         unsigned int flags = F2FS_I(inode)->i_flags;
  41         unsigned int new_fl = 0;
  42
  43         if (flags & F2FS_SYNC_FL)
  44                 new_fl |= S_SYNC;
  45         if (flags & F2FS_APPEND_FL)
  46                 new_fl |= S_APPEND;
  47         if (flags & F2FS_IMMUTABLE_FL)
  48                 new_fl |= S_IMMUTABLE;
  49         if (flags & F2FS_NOATIME_FL)
  50                 new_fl |= S_NOATIME;
  51         if (flags & F2FS_DIRSYNC_FL)
  52                 new_fl |= S_DIRSYNC;
  53         if (file_is_encrypt(inode))
  54                 new_fl |= S_ENCRYPTED;
  55         if (file_is_verity(inode))
  56                 new_fl |= S_VERITY;
  57         if (flags & F2FS_CASEFOLD_FL)
  58                 new_fl |= S_CASEFOLD;
  59         inode_set_flags(inode, new_fl,
  60                         S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|
  61                         S_ENCRYPTED|S_VERITY|S_CASEFOLD);
  62 }
  63
  64 static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
  65 {
  66         int extra_size = get_extra_isize(inode);
  67
  68         if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
  69                         S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
  70                 if (ri->i_addr[extra_size])
  71                         inode->i_rdev = old_decode_dev(
  72                                 le32_to_cpu(ri->i_addr[extra_size]));
  73                 else
  74                         inode->i_rdev = new_decode_dev(
  75                                 le32_to_cpu(ri->i_addr[extra_size + 1]));
  76         }
  77 }
  78
  79 static int __written_first_block(struct f2fs_sb_info *sbi,
  80                                         struct f2fs_inode *ri)
  81 {
  82         block_t addr = le32_to_cpu(ri->i_addr[offset_in_addr(ri)]);
  83
  84         if (!__is_valid_data_blkaddr(addr))
  85                 return 1;
  86         if (!f2fs_is_valid_blkaddr(sbi, addr, DATA_GENERIC_ENHANCE)) {
  87                 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
  88                 return -EFSCORRUPTED;
  89         }
  90         return 0;
  91 }
  92
  93 static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
  94 {
  95         int extra_size = get_extra_isize(inode);
  96
  97         if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
  98                 if (old_valid_dev(inode->i_rdev)) {
  99                         ri->i_addr[extra_size] =
 100                                 cpu_to_le32(old_encode_dev(inode->i_rdev));
 101                         ri->i_addr[extra_size + 1] = 0;
 102                 } else {
 103                         ri->i_addr[extra_size] = 0;
 104                         ri->i_addr[extra_size + 1] =
 105                                 cpu_to_le32(new_encode_dev(inode->i_rdev));
 106                         ri->i_addr[extra_size + 2] = 0;
 107                 }
 108         }
 109 }
 110
 111 static void __recover_inline_status(struct inode *inode, struct page *ipage)
 112 {
 113         void *inline_data = inline_data_addr(inode, ipage);
 114         __le32 *start = inline_data;
 115         __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);
 116
 117         while (start < end) {
 118                 if (*start++) {
 119                         f2fs_wait_on_page_writeback(ipage, NODE, true, true);
 120
 121                         set_inode_flag(inode, FI_DATA_EXIST);
 122                         set_raw_inline(inode, F2FS_INODE(ipage));
 123                         set_page_dirty(ipage);
 124                         return;
 125                 }
 126         }
 127         return;
 128 }
 129
 130 static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
 131 {
 132         struct f2fs_inode *ri = &F2FS_NODE(page)->i;
 133
 134         if (!f2fs_sb_has_inode_chksum(sbi))
 135                 return false;
 136
 137         if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR))
 138                 return false;
 139
 140         if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize),
 141                                 i_inode_checksum))
 142                 return false;
 143
 144         return true;
 145 }
 146
 147 static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
 148 {
 149         struct f2fs_node *node = F2FS_NODE(page);
 150         struct f2fs_inode *ri = &node->i;
 151         __le32 ino = node->footer.ino;
 152         __le32 gen = ri->i_generation;
 153         __u32 chksum, chksum_seed;
 154         __u32 dummy_cs = 0;
 155         unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum);
 156         unsigned int cs_size = sizeof(dummy_cs);
 157
 158         chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino,
 159                                                         sizeof(ino));
 160         chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen));
 161
 162         chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset);
 163         chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size);
 164         offset += cs_size;
 165         chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset,
 166                                                 F2FS_BLKSIZE - offset);
 167         return chksum;
 168 }
 169
 170 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)
 171 {
 172         struct f2fs_inode *ri;
 173         __u32 provided, calculated;
 174
 175         if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)))
 176                 return true;
 177
 178 #ifdef CONFIG_F2FS_CHECK_FS
 179         if (!f2fs_enable_inode_chksum(sbi, page))
 180 #else
 181         if (!f2fs_enable_inode_chksum(sbi, page) ||
 182                         PageDirty(page) || PageWriteback(page))
 183 #endif
 184                 return true;
 185
 186         ri = &F2FS_NODE(page)->i;
 187         provided = le32_to_cpu(ri->i_inode_checksum);
 188         calculated = f2fs_inode_chksum(sbi, page);
 189
 190         if (provided != calculated)
 191                 f2fs_warn(sbi, "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x",
 192                           page->index, ino_of_node(page), provided, calculated);
 193
 194         return provided == calculated;
 195 }
 196
 197 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page)
 198 {
 199         struct f2fs_inode *ri = &F2FS_NODE(page)->i;
 200
 201         if (!f2fs_enable_inode_chksum(sbi, page))
 202                 return;
 203
 204         ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page));
 205 }
 206
 207 static bool sanity_check_compress_inode(struct inode *inode,
 208                         struct f2fs_inode *ri)
 209 {
 210         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 211         unsigned char clevel;
 212
 213         if (ri->i_compress_algorithm >= COMPRESS_MAX) {
 214                 f2fs_warn(sbi,
 215                         "%s: inode (ino=%lx) has unsupported compress algorithm: %u, run fsck to fix",
 216                         __func__, inode->i_ino, ri->i_compress_algorithm);
 217                 goto err;
 218         }
 219         if (le64_to_cpu(ri->i_compr_blocks) >
 220                         SECTOR_TO_BLOCK(inode->i_blocks)) {
 221                 f2fs_warn(sbi,
 222                         "%s: inode (ino=%lx) has inconsistent i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix",
 223                         __func__, inode->i_ino, le64_to_cpu(ri->i_compr_blocks),
 224                         SECTOR_TO_BLOCK(inode->i_blocks));
 225                 goto err;
 226         }
 227         if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
 228                 ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) {
 229                 f2fs_warn(sbi,
 230                         "%s: inode (ino=%lx) has unsupported log cluster size: %u, run fsck to fix",
 231                         __func__, inode->i_ino, ri->i_log_cluster_size);
 232                 goto err;
 233         }
 234
 235         clevel = le16_to_cpu(ri->i_compress_flag) >>
 236                                 COMPRESS_LEVEL_OFFSET;
 237         switch (ri->i_compress_algorithm) {
 238         case COMPRESS_LZO:
 239 #ifdef CONFIG_F2FS_FS_LZO
 240                 if (clevel)
 241                         goto err_level;
 242 #endif
 243                 break;
 244         case COMPRESS_LZORLE:
 245 #ifdef CONFIG_F2FS_FS_LZORLE
 246                 if (clevel)
 247                         goto err_level;
 248 #endif
 249                 break;
 250         case COMPRESS_LZ4:
 251 #ifdef CONFIG_F2FS_FS_LZ4
 252 #ifdef CONFIG_F2FS_FS_LZ4HC
 253                 if (clevel &&
 254                    (clevel < LZ4HC_MIN_CLEVEL || clevel > LZ4HC_MAX_CLEVEL))
 255                         goto err_level;
 256 #else
 257                 if (clevel)
 258                         goto err_level;
 259 #endif
 260 #endif
 261                 break;
 262         case COMPRESS_ZSTD:
 263 #ifdef CONFIG_F2FS_FS_ZSTD
 264                 if (clevel < zstd_min_clevel() || clevel > zstd_max_clevel())
 265                         goto err_level;
 266 #endif
 267                 break;
 268         default:
 269                 goto err_level;
 270         }
 271
 272         return true;
 273 err_level:
 274         f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported compress level: %u, run fsck to fix",
 275                   __func__, inode->i_ino, clevel);
 276 err:
 277         set_sbi_flag(sbi, SBI_NEED_FSCK);
 278         return false;
 279 }
 280
 281 static bool sanity_check_inode(struct inode *inode, struct page *node_page)
 282 {
 283         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 284         struct f2fs_inode_info *fi = F2FS_I(inode);
 285         struct f2fs_inode *ri = F2FS_INODE(node_page);
 286         unsigned long long iblocks;
 287
 288         iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks);
 289         if (!iblocks) {
 290                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 291                 f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.",
 292                           __func__, inode->i_ino, iblocks);
 293                 return false;
 294         }
 295
 296         if (ino_of_node(node_page) != nid_of_node(node_page)) {
 297                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 298                 f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.",
 299                           __func__, inode->i_ino,
 300                           ino_of_node(node_page), nid_of_node(node_page));
 301                 return false;
 302         }
 303
 304         if (f2fs_has_extra_attr(inode)) {
 305                 if (!f2fs_sb_has_extra_attr(sbi)) {
 306                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 307                         f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off",
 308                                   __func__, inode->i_ino);
 309                         return false;
 310                 }
 311                 if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE ||
 312                         fi->i_extra_isize < F2FS_MIN_EXTRA_ATTR_SIZE ||
 313                         fi->i_extra_isize % sizeof(__le32)) {
 314                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 315                         f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu",
 316                                   __func__, inode->i_ino, fi->i_extra_isize,
 317                                   F2FS_TOTAL_EXTRA_ATTR_SIZE);
 318                         return false;
 319                 }
 320                 if (f2fs_sb_has_flexible_inline_xattr(sbi) &&
 321                         f2fs_has_inline_xattr(inode) &&
 322                         (!fi->i_inline_xattr_size ||
 323                         fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) {
 324                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 325                         f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %zu",
 326                                   __func__, inode->i_ino, fi->i_inline_xattr_size,
 327                                   MAX_INLINE_XATTR_SIZE);
 328                         return false;
 329                 }
 330                 if (f2fs_sb_has_compression(sbi) &&
 331                         fi->i_flags & F2FS_COMPR_FL &&
 332                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
 333                                                 i_compress_flag)) {
 334                         if (!sanity_check_compress_inode(inode, ri))
 335                                 return false;
 336                 }
 337         } else if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
 338                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 339                 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, run fsck to fix.",
 340                           __func__, inode->i_ino);
 341                 return false;
 342         }
 343
 344         if (!f2fs_sb_has_extra_attr(sbi)) {
 345                 if (f2fs_sb_has_project_quota(sbi)) {
 346                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 347                         f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",
 348                                   __func__, inode->i_ino, F2FS_FEATURE_PRJQUOTA);
 349                         return false;
 350                 }
 351                 if (f2fs_sb_has_inode_chksum(sbi)) {
 352                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 353                         f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",
 354                                   __func__, inode->i_ino, F2FS_FEATURE_INODE_CHKSUM);
 355                         return false;
 356                 }
 357                 if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
 358                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 359                         f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",
 360                                   __func__, inode->i_ino, F2FS_FEATURE_FLEXIBLE_INLINE_XATTR);
 361                         return false;
 362                 }
 363                 if (f2fs_sb_has_inode_crtime(sbi)) {
 364                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 365                         f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",
 366                                   __func__, inode->i_ino, F2FS_FEATURE_INODE_CRTIME);
 367                         return false;
 368                 }
 369                 if (f2fs_sb_has_compression(sbi)) {
 370                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 371                         f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",
 372                                   __func__, inode->i_ino, F2FS_FEATURE_COMPRESSION);
 373                         return false;
 374                 }
 375         }
 376
 377         if (f2fs_sanity_check_inline_data(inode)) {
 378                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 379                 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix",
 380                           __func__, inode->i_ino, inode->i_mode);
 381                 return false;
 382         }
 383
 384         if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
 385                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 386                 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix",
 387                           __func__, inode->i_ino, inode->i_mode);
 388                 return false;
 389         }
 390
 391         if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) {
 392                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 393                 f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off",
 394                           __func__, inode->i_ino);
 395                 return false;
 396         }
 397
 398         return true;
 399 }
 400
 401 static void init_idisk_time(struct inode *inode)
 402 {
 403         struct f2fs_inode_info *fi = F2FS_I(inode);
 404
 405         fi->i_disk_time[0] = inode->i_atime;
 406         fi->i_disk_time[1] = inode->i_ctime;
 407         fi->i_disk_time[2] = inode->i_mtime;
 408 }
 409
 410 static int do_read_inode(struct inode *inode)
 411 {
 412         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 413         struct f2fs_inode_info *fi = F2FS_I(inode);
 414         struct page *node_page;
 415         struct f2fs_inode *ri;
 416         projid_t i_projid;
 417         int err;
 418
 419         /* Check if ino is within scope */
 420         if (f2fs_check_nid_range(sbi, inode->i_ino))
 421                 return -EINVAL;
 422
 423         node_page = f2fs_get_node_page(sbi, inode->i_ino);
 424         if (IS_ERR(node_page))
 425                 return PTR_ERR(node_page);
 426
 427         ri = F2FS_INODE(node_page);
 428
 429         inode->i_mode = le16_to_cpu(ri->i_mode);
 430         i_uid_write(inode, le32_to_cpu(ri->i_uid));
 431         i_gid_write(inode, le32_to_cpu(ri->i_gid));
 432         set_nlink(inode, le32_to_cpu(ri->i_links));
 433         inode->i_size = le64_to_cpu(ri->i_size);
 434         inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
 435
 436         inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
 437         inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
 438         inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
 439         inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
 440         inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
 441         inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
 442         inode->i_generation = le32_to_cpu(ri->i_generation);
 443         if (S_ISDIR(inode->i_mode))
 444                 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
 445         else if (S_ISREG(inode->i_mode))
 446                 fi->i_gc_failures[GC_FAILURE_PIN] =
 447                                         le16_to_cpu(ri->i_gc_failures);
 448         fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
 449         fi->i_flags = le32_to_cpu(ri->i_flags);
 450         if (S_ISREG(inode->i_mode))
 451                 fi->i_flags &= ~F2FS_PROJINHERIT_FL;
 452         bitmap_zero(fi->flags, FI_MAX);
 453         fi->i_advise = ri->i_advise;
 454         fi->i_pino = le32_to_cpu(ri->i_pino);
 455         fi->i_dir_level = ri->i_dir_level;
 456
 457         get_inline_info(inode, ri);
 458
 459         fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
 460                                         le16_to_cpu(ri->i_extra_isize) : 0;
 461
 462         if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
 463                 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
 464         } else if (f2fs_has_inline_xattr(inode) ||
 465                                 f2fs_has_inline_dentry(inode)) {
 466                 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
 467         } else {
 468
 469                 /*
 470                  * Previous inline data or directory always reserved 200 bytes
 471                  * in inode layout, even if inline_xattr is disabled. In order
 472                  * to keep inline_dentry's structure for backward compatibility,
 473                  * we get the space back only from inline_data.
 474                  */
 475                 fi->i_inline_xattr_size = 0;
 476         }
 477
 478         /* check data exist */
 479         if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
 480                 __recover_inline_status(inode, node_page);
 481
 482         /* try to recover cold bit for non-dir inode */
 483         if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) {
 484                 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
 485                 set_cold_node(node_page, false);
 486                 set_page_dirty(node_page);
 487         }
 488
 489         /* get rdev by using inline_info */
 490         __get_inode_rdev(inode, ri);
 491
 492         if (S_ISREG(inode->i_mode)) {
 493                 err = __written_first_block(sbi, ri);
 494                 if (err < 0) {
 495                         f2fs_put_page(node_page, 1);
 496                         return err;
 497                 }
 498                 if (!err)
 499                         set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
 500         }
 501
 502         if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
 503                 fi->last_disk_size = inode->i_size;
 504
 505         if (fi->i_flags & F2FS_PROJINHERIT_FL)
 506                 set_inode_flag(inode, FI_PROJ_INHERIT);
 507
 508         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) &&
 509                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
 510                 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
 511         else
 512                 i_projid = F2FS_DEF_PROJID;
 513         fi->i_projid = make_kprojid(&init_user_ns, i_projid);
 514
 515         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) &&
 516                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
 517                 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
 518                 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
 519         }
 520
 521         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
 522                                         (fi->i_flags & F2FS_COMPR_FL)) {
 523                 if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
 524                                         i_compress_flag)) {
 525                         unsigned short compress_flag;
 526
 527                         atomic_set(&fi->i_compr_blocks,
 528                                         le64_to_cpu(ri->i_compr_blocks));
 529                         fi->i_compress_algorithm = ri->i_compress_algorithm;
 530                         fi->i_log_cluster_size = ri->i_log_cluster_size;
 531                         compress_flag = le16_to_cpu(ri->i_compress_flag);
 532                         fi->i_compress_level = compress_flag >>
 533                                                 COMPRESS_LEVEL_OFFSET;
 534                         fi->i_compress_flag = compress_flag &
 535                                         GENMASK(COMPRESS_LEVEL_OFFSET - 1, 0);
 536                         fi->i_cluster_size = BIT(fi->i_log_cluster_size);
 537                         set_inode_flag(inode, FI_COMPRESSED_FILE);
 538                 }
 539         }
 540
 541         init_idisk_time(inode);
 542
 543         /* Need all the flag bits */
 544         f2fs_init_read_extent_tree(inode, node_page);
 545         f2fs_init_age_extent_tree(inode);
 546
 547         if (!sanity_check_inode(inode, node_page)) {
 548                 f2fs_put_page(node_page, 1);
 549                 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
 550                 return -EFSCORRUPTED;
 551         }
 552
 553         if (!sanity_check_extent_cache(inode)) {
 554                 f2fs_put_page(node_page, 1);
 555                 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
 556                 return -EFSCORRUPTED;
 557         }
 558
 559         f2fs_put_page(node_page, 1);
 560
 561         stat_inc_inline_xattr(inode);
 562         stat_inc_inline_inode(inode);
 563         stat_inc_inline_dir(inode);
 564         stat_inc_compr_inode(inode);
 565         stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks));
 566
 567         return 0;
 568 }
 569
 570 static bool is_meta_ino(struct f2fs_sb_info *sbi, unsigned int ino)
 571 {
 572         return ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi) ||
 573                 ino == F2FS_COMPRESS_INO(sbi);
 574 }
 575
 576 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
 577 {
 578         struct f2fs_sb_info *sbi = F2FS_SB(sb);
 579         struct inode *inode;
 580         int ret = 0;
 581
 582         inode = iget_locked(sb, ino);
 583         if (!inode)
 584                 return ERR_PTR(-ENOMEM);
 585
 586         if (!(inode->i_state & I_NEW)) {
 587                 if (is_meta_ino(sbi, ino)) {
 588                         f2fs_err(sbi, "inaccessible inode: %lu, run fsck to repair", ino);
 589                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 590                         ret = -EFSCORRUPTED;
 591                         trace_f2fs_iget_exit(inode, ret);
 592                         iput(inode);
 593                         f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
 594                         return ERR_PTR(ret);
 595                 }
 596
 597                 trace_f2fs_iget(inode);
 598                 return inode;
 599         }
 600
 601         if (is_meta_ino(sbi, ino))
 602                 goto make_now;
 603
 604         ret = do_read_inode(inode);
 605         if (ret)
 606                 goto bad_inode;
 607 make_now:
 608         if (ino == F2FS_NODE_INO(sbi)) {
 609                 inode->i_mapping->a_ops = &f2fs_node_aops;
 610                 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
 611         } else if (ino == F2FS_META_INO(sbi)) {
 612                 inode->i_mapping->a_ops = &f2fs_meta_aops;
 613                 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
 614         } else if (ino == F2FS_COMPRESS_INO(sbi)) {
 615 #ifdef CONFIG_F2FS_FS_COMPRESSION
 616                 inode->i_mapping->a_ops = &f2fs_compress_aops;
 617                 /*
 618                  * generic_error_remove_page only truncates pages of regular
 619                  * inode
 620                  */
 621                 inode->i_mode |= S_IFREG;
 622 #endif
 623                 mapping_set_gfp_mask(inode->i_mapping,
 624                         GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE);
 625         } else if (S_ISREG(inode->i_mode)) {
 626                 inode->i_op = &f2fs_file_inode_operations;
 627                 inode->i_fop = &f2fs_file_operations;
 628                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 629         } else if (S_ISDIR(inode->i_mode)) {
 630                 inode->i_op = &f2fs_dir_inode_operations;
 631                 inode->i_fop = &f2fs_dir_operations;
 632                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 633                 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
 634         } else if (S_ISLNK(inode->i_mode)) {
 635                 if (file_is_encrypt(inode))
 636                         inode->i_op = &f2fs_encrypted_symlink_inode_operations;
 637                 else
 638                         inode->i_op = &f2fs_symlink_inode_operations;
 639                 inode_nohighmem(inode);
 640                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 641         } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
 642                         S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
 643                 inode->i_op = &f2fs_special_inode_operations;
 644                 init_special_inode(inode, inode->i_mode, inode->i_rdev);
 645         } else {
 646                 ret = -EIO;
 647                 goto bad_inode;
 648         }
 649         f2fs_set_inode_flags(inode);
 650
 651         if (file_should_truncate(inode) &&
 652                         !is_sbi_flag_set(sbi, SBI_POR_DOING)) {
 653                 ret = f2fs_truncate(inode);
 654                 if (ret)
 655                         goto bad_inode;
 656                 file_dont_truncate(inode);
 657         }
 658
 659         unlock_new_inode(inode);
 660         trace_f2fs_iget(inode);
 661         return inode;
 662
 663 bad_inode:
 664         f2fs_inode_synced(inode);
 665         iget_failed(inode);
 666         trace_f2fs_iget_exit(inode, ret);
 667         return ERR_PTR(ret);
 668 }
 669
 670 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
 671 {
 672         struct inode *inode;
 673 retry:
 674         inode = f2fs_iget(sb, ino);
 675         if (IS_ERR(inode)) {
 676                 if (PTR_ERR(inode) == -ENOMEM) {
 677                         memalloc_retry_wait(GFP_NOFS);
 678                         goto retry;
 679                 }
 680         }
 681         return inode;
 682 }
 683
 684 void f2fs_update_inode(struct inode *inode, struct page *node_page)
 685 {
 686         struct f2fs_inode *ri;
 687         struct extent_tree *et = F2FS_I(inode)->extent_tree[EX_READ];
 688
 689         f2fs_wait_on_page_writeback(node_page, NODE, true, true);
 690         set_page_dirty(node_page);
 691
 692         f2fs_inode_synced(inode);
 693
 694         ri = F2FS_INODE(node_page);
 695
 696         ri->i_mode = cpu_to_le16(inode->i_mode);
 697         ri->i_advise = F2FS_I(inode)->i_advise;
 698         ri->i_uid = cpu_to_le32(i_uid_read(inode));
 699         ri->i_gid = cpu_to_le32(i_gid_read(inode));
 700         ri->i_links = cpu_to_le32(inode->i_nlink);
 701         ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
 702
 703         if (!f2fs_is_atomic_file(inode) ||
 704                         is_inode_flag_set(inode, FI_ATOMIC_COMMITTED))
 705                 ri->i_size = cpu_to_le64(i_size_read(inode));
 706
 707         if (et) {
 708                 read_lock(&et->lock);
 709                 set_raw_read_extent(&et->largest, &ri->i_ext);
 710                 read_unlock(&et->lock);
 711         } else {
 712                 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
 713         }
 714         set_raw_inline(inode, ri);
 715
 716         ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
 717         ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
 718         ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
 719         ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
 720         ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
 721         ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
 722         if (S_ISDIR(inode->i_mode))
 723                 ri->i_current_depth =
 724                         cpu_to_le32(F2FS_I(inode)->i_current_depth);
 725         else if (S_ISREG(inode->i_mode))
 726                 ri->i_gc_failures =
 727                         cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]);
 728         ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
 729         ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
 730         ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
 731         ri->i_generation = cpu_to_le32(inode->i_generation);
 732         ri->i_dir_level = F2FS_I(inode)->i_dir_level;
 733
 734         if (f2fs_has_extra_attr(inode)) {
 735                 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
 736
 737                 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)))
 738                         ri->i_inline_xattr_size =
 739                                 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
 740
 741                 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) &&
 742                         F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
 743                                                                 i_projid)) {
 744                         projid_t i_projid;
 745
 746                         i_projid = from_kprojid(&init_user_ns,
 747                                                 F2FS_I(inode)->i_projid);
 748                         ri->i_projid = cpu_to_le32(i_projid);
 749                 }
 750
 751                 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
 752                         F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
 753                                                                 i_crtime)) {
 754                         ri->i_crtime =
 755                                 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
 756                         ri->i_crtime_nsec =
 757                                 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
 758                 }
 759
 760                 if (f2fs_sb_has_compression(F2FS_I_SB(inode)) &&
 761                         F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
 762                                                         i_compress_flag)) {
 763                         unsigned short compress_flag;
 764
 765                         ri->i_compr_blocks =
 766                                 cpu_to_le64(atomic_read(
 767                                         &F2FS_I(inode)->i_compr_blocks));
 768                         ri->i_compress_algorithm =
 769                                 F2FS_I(inode)->i_compress_algorithm;
 770                         compress_flag = F2FS_I(inode)->i_compress_flag |
 771                                 F2FS_I(inode)->i_compress_level <<
 772                                                 COMPRESS_LEVEL_OFFSET;
 773                         ri->i_compress_flag = cpu_to_le16(compress_flag);
 774                         ri->i_log_cluster_size =
 775                                 F2FS_I(inode)->i_log_cluster_size;
 776                 }
 777         }
 778
 779         __set_inode_rdev(inode, ri);
 780
 781         /* deleted inode */
 782         if (inode->i_nlink == 0)
 783                 clear_page_private_inline(node_page);
 784
 785         init_idisk_time(inode);
 786 #ifdef CONFIG_F2FS_CHECK_FS
 787         f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);
 788 #endif
 789 }
 790
 791 void f2fs_update_inode_page(struct inode *inode)
 792 {
 793         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 794         struct page *node_page;
 795         int count = 0;
 796 retry:
 797         node_page = f2fs_get_node_page(sbi, inode->i_ino);
 798         if (IS_ERR(node_page)) {
 799                 int err = PTR_ERR(node_page);
 800
 801                 /* The node block was truncated. */
 802                 if (err == -ENOENT)
 803                         return;
 804
 805                 if (err == -ENOMEM || ++count <= DEFAULT_RETRY_IO_COUNT)
 806                         goto retry;
 807                 f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_UPDATE_INODE);
 808                 return;
 809         }
 810         f2fs_update_inode(inode, node_page);
 811         f2fs_put_page(node_page, 1);
 812 }
 813
 814 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
 815 {
 816         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 817
 818         if (inode->i_ino == F2FS_NODE_INO(sbi) ||
 819                         inode->i_ino == F2FS_META_INO(sbi))
 820                 return 0;
 821
 822         /*
 823          * atime could be updated without dirtying f2fs inode in lazytime mode
 824          */
 825         if (f2fs_is_time_consistent(inode) &&
 826                 !is_inode_flag_set(inode, FI_DIRTY_INODE))
 827                 return 0;
 828
 829         if (!f2fs_is_checkpoint_ready(sbi))
 830                 return -ENOSPC;
 831
 832         /*
 833          * We need to balance fs here to prevent from producing dirty node pages
 834          * during the urgent cleaning time when running out of free sections.
 835          */
 836         f2fs_update_inode_page(inode);
 837         if (wbc && wbc->nr_to_write)
 838                 f2fs_balance_fs(sbi, true);
 839         return 0;
 840 }
 841
 842 /*
 843  * Called at the last iput() if i_nlink is zero
 844  */
 845 void f2fs_evict_inode(struct inode *inode)
 846 {
 847         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 848         struct f2fs_inode_info *fi = F2FS_I(inode);
 849         nid_t xnid = fi->i_xattr_nid;
 850         int err = 0;
 851
 852         f2fs_abort_atomic_write(inode, true);
 853
 854         if (fi->cow_inode) {
 855                 clear_inode_flag(fi->cow_inode, FI_COW_FILE);
 856                 iput(fi->cow_inode);
 857                 fi->cow_inode = NULL;
 858         }
 859
 860         trace_f2fs_evict_inode(inode);
 861         truncate_inode_pages_final(&inode->i_data);
 862
 863         if ((inode->i_nlink || is_bad_inode(inode)) &&
 864                 test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode))
 865                 f2fs_invalidate_compress_pages(sbi, inode->i_ino);
 866
 867         if (inode->i_ino == F2FS_NODE_INO(sbi) ||
 868                         inode->i_ino == F2FS_META_INO(sbi) ||
 869                         inode->i_ino == F2FS_COMPRESS_INO(sbi))
 870                 goto out_clear;
 871
 872         f2fs_bug_on(sbi, get_dirty_pages(inode));
 873         f2fs_remove_dirty_inode(inode);
 874
 875         f2fs_destroy_extent_tree(inode);
 876
 877         if (inode->i_nlink || is_bad_inode(inode))
 878                 goto no_delete;
 879
 880         err = f2fs_dquot_initialize(inode);
 881         if (err) {
 882                 err = 0;
 883                 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
 884         }
 885
 886         f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
 887         f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
 888         f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
 889
 890         if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING))
 891                 sb_start_intwrite(inode->i_sb);
 892         set_inode_flag(inode, FI_NO_ALLOC);
 893         i_size_write(inode, 0);
 894 retry:
 895         if (F2FS_HAS_BLOCKS(inode))
 896                 err = f2fs_truncate(inode);
 897
 898         if (time_to_inject(sbi, FAULT_EVICT_INODE))
 899                 err = -EIO;
 900
 901         if (!err) {
 902                 f2fs_lock_op(sbi);
 903                 err = f2fs_remove_inode_page(inode);
 904                 f2fs_unlock_op(sbi);
 905                 if (err == -ENOENT) {
 906                         err = 0;
 907
 908                         /*
 909                          * in fuzzed image, another node may has the same
 910                          * block address as inode's, if it was truncated
 911                          * previously, truncation of inode node will fail.
 912                          */
 913                         if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
 914                                 f2fs_warn(F2FS_I_SB(inode),
 915                                         "f2fs_evict_inode: inconsistent node id, ino:%lu",
 916                                         inode->i_ino);
 917                                 f2fs_inode_synced(inode);
 918                                 set_sbi_flag(sbi, SBI_NEED_FSCK);
 919                         }
 920                 }
 921         }
 922
 923         /* give more chances, if ENOMEM case */
 924         if (err == -ENOMEM) {
 925                 err = 0;
 926                 goto retry;
 927         }
 928
 929         if (err) {
 930                 f2fs_update_inode_page(inode);
 931                 if (dquot_initialize_needed(inode))
 932                         set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
 933         }
 934         if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING))
 935                 sb_end_intwrite(inode->i_sb);
 936 no_delete:
 937         dquot_drop(inode);
 938
 939         stat_dec_inline_xattr(inode);
 940         stat_dec_inline_dir(inode);
 941         stat_dec_inline_inode(inode);
 942         stat_dec_compr_inode(inode);
 943         stat_sub_compr_blocks(inode,
 944                         atomic_read(&fi->i_compr_blocks));
 945
 946         if (likely(!f2fs_cp_error(sbi) &&
 947                                 !is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
 948                 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
 949         else
 950                 f2fs_inode_synced(inode);
 951
 952         /* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */
 953         if (inode->i_ino)
 954                 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
 955                                                         inode->i_ino);
 956         if (xnid)
 957                 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
 958         if (inode->i_nlink) {
 959                 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
 960                         f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);
 961                 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
 962                         f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
 963         }
 964         if (is_inode_flag_set(inode, FI_FREE_NID)) {
 965                 f2fs_alloc_nid_failed(sbi, inode->i_ino);
 966                 clear_inode_flag(inode, FI_FREE_NID);
 967         } else {
 968                 /*
 969                  * If xattr nid is corrupted, we can reach out error condition,
 970                  * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).
 971                  * In that case, f2fs_check_nid_range() is enough to give a clue.
 972                  */
 973         }
 974 out_clear:
 975         fscrypt_put_encryption_info(inode);
 976         fsverity_cleanup_inode(inode);
 977         clear_inode(inode);
 978 }
 979
 980 /* caller should call f2fs_lock_op() */
 981 void f2fs_handle_failed_inode(struct inode *inode)
 982 {
 983         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 984         struct node_info ni;
 985         int err;
 986
 987         /*
 988          * clear nlink of inode in order to release resource of inode
 989          * immediately.
 990          */
 991         clear_nlink(inode);
 992
 993         /*
 994          * we must call this to avoid inode being remained as dirty, resulting
 995          * in a panic when flushing dirty inodes in gdirty_list.
 996          */
 997         f2fs_update_inode_page(inode);
 998         f2fs_inode_synced(inode);
 999
1000         /* don't make bad inode, since it becomes a regular file. */
1001         unlock_new_inode(inode);
1002
1003         /*
1004          * Note: we should add inode to orphan list before f2fs_unlock_op()
1005          * so we can prevent losing this orphan when encoutering checkpoint
1006          * and following suddenly power-off.
1007          */
1008         err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false);
1009         if (err) {
1010                 set_sbi_flag(sbi, SBI_NEED_FSCK);
1011                 set_inode_flag(inode, FI_FREE_NID);
1012                 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix.");
1013                 goto out;
1014         }
1015
1016         if (ni.blk_addr != NULL_ADDR) {
1017                 err = f2fs_acquire_orphan_inode(sbi);
1018                 if (err) {
1019                         set_sbi_flag(sbi, SBI_NEED_FSCK);
1020                         f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix.");
1021                 } else {
1022                         f2fs_add_orphan_inode(inode);
1023                 }
1024                 f2fs_alloc_nid_done(sbi, inode->i_ino);
1025         } else {
1026                 set_inode_flag(inode, FI_FREE_NID);
1027         }
1028
1029 out:
1030         f2fs_unlock_op(sbi);
1031
1032         /* iput will drop the inode object */
1033         iput(inode);
1034 }