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