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/writeback.h>
  11#include <linux/sched/mm.h>
  12#include <linux/lz4.h>
  13#include <linux/zstd.h>
  14
  15#include "f2fs.h"
  16#include "node.h"
  17#include "segment.h"
  18#include "xattr.h"
  19
  20#include <trace/events/f2fs.h>
  21
  22#ifdef CONFIG_F2FS_FS_COMPRESSION
  23extern const struct address_space_operations f2fs_compress_aops;
  24#endif
  25
  26void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync)
  27{
  28	if (is_inode_flag_set(inode, FI_NEW_INODE))
  29		return;
  30
  31	if (f2fs_readonly(F2FS_I_SB(inode)->sb))
  32		return;
  33
  34	if (f2fs_inode_dirtied(inode, sync))
  35		return;
  36
  37	/* only atomic file w/ FI_ATOMIC_COMMITTED can be set vfs dirty */
  38	if (f2fs_is_atomic_file(inode) &&
  39			!is_inode_flag_set(inode, FI_ATOMIC_COMMITTED))
  40		return;
  41
  42	mark_inode_dirty_sync(inode);
  43}
  44
  45void f2fs_set_inode_flags(struct inode *inode)
  46{
  47	unsigned int flags = F2FS_I(inode)->i_flags;
  48	unsigned int new_fl = 0;
  49
  50	if (flags & F2FS_SYNC_FL)
  51		new_fl |= S_SYNC;
  52	if (flags & F2FS_APPEND_FL)
  53		new_fl |= S_APPEND;
  54	if (flags & F2FS_IMMUTABLE_FL)
  55		new_fl |= S_IMMUTABLE;
  56	if (flags & F2FS_NOATIME_FL)
  57		new_fl |= S_NOATIME;
  58	if (flags & F2FS_DIRSYNC_FL)
  59		new_fl |= S_DIRSYNC;
  60	if (file_is_encrypt(inode))
  61		new_fl |= S_ENCRYPTED;
  62	if (file_is_verity(inode))
  63		new_fl |= S_VERITY;
  64	if (flags & F2FS_CASEFOLD_FL)
  65		new_fl |= S_CASEFOLD;
  66	inode_set_flags(inode, new_fl,
  67			S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|
  68			S_ENCRYPTED|S_VERITY|S_CASEFOLD);
  69}
  70
  71static void __get_inode_rdev(struct inode *inode, struct folio *node_folio)
  72{
  73	__le32 *addr = get_dnode_addr(inode, node_folio);
  74
  75	if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
  76			S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
  77		if (addr[0])
  78			inode->i_rdev = old_decode_dev(le32_to_cpu(addr[0]));
  79		else
  80			inode->i_rdev = new_decode_dev(le32_to_cpu(addr[1]));
  81	}
  82}
  83
  84static void __set_inode_rdev(struct inode *inode, struct folio *node_folio)
  85{
  86	__le32 *addr = get_dnode_addr(inode, node_folio);
  87
  88	if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
  89		if (old_valid_dev(inode->i_rdev)) {
  90			addr[0] = cpu_to_le32(old_encode_dev(inode->i_rdev));
  91			addr[1] = 0;
  92		} else {
  93			addr[0] = 0;
  94			addr[1] = cpu_to_le32(new_encode_dev(inode->i_rdev));
  95			addr[2] = 0;
  96		}
  97	}
  98}
  99
 100static void __recover_inline_status(struct inode *inode, struct folio *ifolio)
 101{
 102	void *inline_data = inline_data_addr(inode, ifolio);
 103	__le32 *start = inline_data;
 104	__le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);
 105
 106	while (start < end) {
 107		if (*start++) {
 108			f2fs_folio_wait_writeback(ifolio, NODE, true, true);
 109
 110			set_inode_flag(inode, FI_DATA_EXIST);
 111			set_raw_inline(inode, F2FS_INODE(ifolio));
 112			folio_mark_dirty(ifolio);
 113			return;
 114		}
 115	}
 116	return;
 117}
 118
 119static
 120bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct folio *folio)
 121{
 122	struct f2fs_inode *ri = &F2FS_NODE(folio)->i;
 123
 124	if (!f2fs_sb_has_inode_chksum(sbi))
 125		return false;
 126
 127	if (!IS_INODE(folio) || !(ri->i_inline & F2FS_EXTRA_ATTR))
 128		return false;
 129
 130	if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize),
 131				i_inode_checksum))
 132		return false;
 133
 134	return true;
 135}
 136
 137static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct folio *folio)
 138{
 139	struct f2fs_node *node = F2FS_NODE(folio);
 140	struct f2fs_inode *ri = &node->i;
 141	__le32 ino = node->footer.ino;
 142	__le32 gen = ri->i_generation;
 143	__u32 chksum, chksum_seed;
 144	__u32 dummy_cs = 0;
 145	unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum);
 146	unsigned int cs_size = sizeof(dummy_cs);
 147
 148	chksum = f2fs_chksum(sbi->s_chksum_seed, (__u8 *)&ino, sizeof(ino));
 149	chksum_seed = f2fs_chksum(chksum, (__u8 *)&gen, sizeof(gen));
 150
 151	chksum = f2fs_chksum(chksum_seed, (__u8 *)ri, offset);
 152	chksum = f2fs_chksum(chksum, (__u8 *)&dummy_cs, cs_size);
 153	offset += cs_size;
 154	chksum = f2fs_chksum(chksum, (__u8 *)ri + offset,
 155			     F2FS_BLKSIZE - offset);
 156	return chksum;
 157}
 158
 159bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct folio *folio)
 160{
 161	struct f2fs_inode *ri;
 162	__u32 provided, calculated;
 163
 164	if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)))
 165		return true;
 166
 167#ifdef CONFIG_F2FS_CHECK_FS
 168	if (!f2fs_enable_inode_chksum(sbi, folio))
 169#else
 170	if (!f2fs_enable_inode_chksum(sbi, folio) ||
 171			folio_test_dirty(folio) ||
 172			folio_test_writeback(folio))
 173#endif
 174		return true;
 175
 176	ri = &F2FS_NODE(folio)->i;
 177	provided = le32_to_cpu(ri->i_inode_checksum);
 178	calculated = f2fs_inode_chksum(sbi, folio);
 179
 180	if (provided != calculated)
 181		f2fs_warn(sbi, "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x",
 182			  folio->index, ino_of_node(folio),
 183			  provided, calculated);
 184
 185	return provided == calculated;
 186}
 187
 188void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct folio *folio)
 189{
 190	struct f2fs_inode *ri = &F2FS_NODE(folio)->i;
 191
 192	if (!f2fs_enable_inode_chksum(sbi, folio))
 193		return;
 194
 195	ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, folio));
 196}
 197
 198static bool sanity_check_compress_inode(struct inode *inode,
 199			struct f2fs_inode *ri)
 200{
 201	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 202	unsigned char clevel;
 203
 204	if (ri->i_compress_algorithm >= COMPRESS_MAX) {
 205		f2fs_warn(sbi,
 206			"%s: inode (ino=%lx) has unsupported compress algorithm: %u, run fsck to fix",
 207			__func__, inode->i_ino, ri->i_compress_algorithm);
 208		return false;
 209	}
 210	if (le64_to_cpu(ri->i_compr_blocks) >
 211			SECTOR_TO_BLOCK(inode->i_blocks)) {
 212		f2fs_warn(sbi,
 213			"%s: inode (ino=%lx) has inconsistent i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix",
 214			__func__, inode->i_ino, le64_to_cpu(ri->i_compr_blocks),
 215			SECTOR_TO_BLOCK(inode->i_blocks));
 216		return false;
 217	}
 218	if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
 219		ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) {
 220		f2fs_warn(sbi,
 221			"%s: inode (ino=%lx) has unsupported log cluster size: %u, run fsck to fix",
 222			__func__, inode->i_ino, ri->i_log_cluster_size);
 223		return false;
 224	}
 225
 226	clevel = le16_to_cpu(ri->i_compress_flag) >>
 227				COMPRESS_LEVEL_OFFSET;
 228	switch (ri->i_compress_algorithm) {
 229	case COMPRESS_LZO:
 230#ifdef CONFIG_F2FS_FS_LZO
 231		if (clevel)
 232			goto err_level;
 233#endif
 234		break;
 235	case COMPRESS_LZORLE:
 236#ifdef CONFIG_F2FS_FS_LZORLE
 237		if (clevel)
 238			goto err_level;
 239#endif
 240		break;
 241	case COMPRESS_LZ4:
 242#ifdef CONFIG_F2FS_FS_LZ4
 243#ifdef CONFIG_F2FS_FS_LZ4HC
 244		if (clevel &&
 245		   (clevel < LZ4HC_MIN_CLEVEL || clevel > LZ4HC_MAX_CLEVEL))
 246			goto err_level;
 247#else
 248		if (clevel)
 249			goto err_level;
 250#endif
 251#endif
 252		break;
 253	case COMPRESS_ZSTD:
 254#ifdef CONFIG_F2FS_FS_ZSTD
 255		if (clevel < zstd_min_clevel() || clevel > zstd_max_clevel())
 256			goto err_level;
 257#endif
 258		break;
 259	default:
 260		goto err_level;
 261	}
 262
 263	return true;
 264err_level:
 265	f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported compress level: %u, run fsck to fix",
 266		  __func__, inode->i_ino, clevel);
 267	return false;
 268}
 269
 270static bool sanity_check_inode(struct inode *inode, struct folio *node_folio)
 271{
 272	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 273	struct f2fs_inode_info *fi = F2FS_I(inode);
 274	struct f2fs_inode *ri = F2FS_INODE(node_folio);
 275	unsigned long long iblocks;
 276
 277	iblocks = le64_to_cpu(F2FS_INODE(node_folio)->i_blocks);
 278	if (!iblocks) {
 279		f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.",
 280			  __func__, inode->i_ino, iblocks);
 281		return false;
 282	}
 283
 284	if (ino_of_node(node_folio) != nid_of_node(node_folio)) {
 285		f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.",
 286			  __func__, inode->i_ino,
 287			  ino_of_node(node_folio), nid_of_node(node_folio));
 288		return false;
 289	}
 290
 291	if (ino_of_node(node_folio) == fi->i_xattr_nid) {
 292		f2fs_warn(sbi, "%s: corrupted inode i_ino=%lx, xnid=%x, run fsck to fix.",
 293			  __func__, inode->i_ino, fi->i_xattr_nid);
 294		return false;
 295	}
 296
 297	if (S_ISDIR(inode->i_mode) && unlikely(inode->i_nlink == 1)) {
 298		f2fs_warn(sbi, "%s: directory inode (ino=%lx) has a single i_nlink",
 299			  __func__, inode->i_ino);
 300		return false;
 301	}
 302
 303	if (f2fs_has_extra_attr(inode)) {
 304		if (!f2fs_sb_has_extra_attr(sbi)) {
 305			f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off",
 306				  __func__, inode->i_ino);
 307			return false;
 308		}
 309		if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE ||
 310			fi->i_extra_isize < F2FS_MIN_EXTRA_ATTR_SIZE ||
 311			fi->i_extra_isize % sizeof(__le32)) {
 312			f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu",
 313				  __func__, inode->i_ino, fi->i_extra_isize,
 314				  F2FS_TOTAL_EXTRA_ATTR_SIZE);
 315			return false;
 316		}
 317		if (f2fs_sb_has_compression(sbi) &&
 318			fi->i_flags & F2FS_COMPR_FL &&
 319			F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
 320						i_compress_flag)) {
 321			if (!sanity_check_compress_inode(inode, ri))
 322				return false;
 323		}
 324	}
 325
 326	if (f2fs_sb_has_flexible_inline_xattr(sbi) &&
 327		f2fs_has_inline_xattr(inode) &&
 328		(fi->i_inline_xattr_size < MIN_INLINE_XATTR_SIZE ||
 329		fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) {
 330		f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, min: %zu, max: %lu",
 331			  __func__, inode->i_ino, fi->i_inline_xattr_size,
 332			  MIN_INLINE_XATTR_SIZE, MAX_INLINE_XATTR_SIZE);
 333		return false;
 334	}
 335
 336	if (!f2fs_sb_has_extra_attr(sbi)) {
 337		if (f2fs_sb_has_project_quota(sbi)) {
 338			f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",
 339				  __func__, inode->i_ino, F2FS_FEATURE_PRJQUOTA);
 340			return false;
 341		}
 342		if (f2fs_sb_has_inode_chksum(sbi)) {
 343			f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",
 344				  __func__, inode->i_ino, F2FS_FEATURE_INODE_CHKSUM);
 345			return false;
 346		}
 347		if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
 348			f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",
 349				  __func__, inode->i_ino, F2FS_FEATURE_FLEXIBLE_INLINE_XATTR);
 350			return false;
 351		}
 352		if (f2fs_sb_has_inode_crtime(sbi)) {
 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_CRTIME);
 355			return false;
 356		}
 357		if (f2fs_sb_has_compression(sbi)) {
 358			f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.",
 359				  __func__, inode->i_ino, F2FS_FEATURE_COMPRESSION);
 360			return false;
 361		}
 362	}
 363
 364	if (f2fs_sanity_check_inline_data(inode, node_folio)) {
 365		f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix",
 366			  __func__, inode->i_ino, inode->i_mode);
 367		return false;
 368	}
 369
 370	if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
 371		f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix",
 372			  __func__, inode->i_ino, inode->i_mode);
 373		return false;
 374	}
 375
 376	if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) {
 377		f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off",
 378			  __func__, inode->i_ino);
 379		return false;
 380	}
 381
 382	if (fi->i_xattr_nid && f2fs_check_nid_range(sbi, fi->i_xattr_nid)) {
 383		f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_xattr_nid: %u, run fsck to fix.",
 384			  __func__, inode->i_ino, fi->i_xattr_nid);
 385		return false;
 386	}
 387
 388	if (IS_DEVICE_ALIASING(inode)) {
 389		if (!f2fs_sb_has_device_alias(sbi)) {
 390			f2fs_warn(sbi, "%s: inode (ino=%lx) has device alias flag, but the feature is off",
 391				  __func__, inode->i_ino);
 392			return false;
 393		}
 394		if (!f2fs_is_pinned_file(inode)) {
 395			f2fs_warn(sbi, "%s: inode (ino=%lx) has device alias flag, but is not pinned",
 396				  __func__, inode->i_ino);
 397			return false;
 398		}
 399	}
 400
 401	return true;
 402}
 403
 404static void init_idisk_time(struct inode *inode)
 405{
 406	struct f2fs_inode_info *fi = F2FS_I(inode);
 407
 408	fi->i_disk_time[0] = inode_get_atime(inode);
 409	fi->i_disk_time[1] = inode_get_ctime(inode);
 410	fi->i_disk_time[2] = inode_get_mtime(inode);
 411}
 412
 413static int do_read_inode(struct inode *inode)
 414{
 415	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 416	struct f2fs_inode_info *fi = F2FS_I(inode);
 417	struct folio *node_folio;
 418	struct f2fs_inode *ri;
 419	projid_t i_projid;
 420
 421	/* Check if ino is within scope */
 422	if (f2fs_check_nid_range(sbi, inode->i_ino))
 423		return -EINVAL;
 424
 425	node_folio = f2fs_get_inode_folio(sbi, inode->i_ino);
 426	if (IS_ERR(node_folio))
 427		return PTR_ERR(node_folio);
 428
 429	ri = F2FS_INODE(node_folio);
 430
 431	inode->i_mode = le16_to_cpu(ri->i_mode);
 432	i_uid_write(inode, le32_to_cpu(ri->i_uid));
 433	i_gid_write(inode, le32_to_cpu(ri->i_gid));
 434	set_nlink(inode, le32_to_cpu(ri->i_links));
 435	inode->i_size = le64_to_cpu(ri->i_size);
 436	inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
 437
 438	inode_set_atime(inode, le64_to_cpu(ri->i_atime),
 439			le32_to_cpu(ri->i_atime_nsec));
 440	inode_set_ctime(inode, le64_to_cpu(ri->i_ctime),
 441			le32_to_cpu(ri->i_ctime_nsec));
 442	inode_set_mtime(inode, le64_to_cpu(ri->i_mtime),
 443			le32_to_cpu(ri->i_mtime_nsec));
 444	inode->i_generation = le32_to_cpu(ri->i_generation);
 445	if (S_ISDIR(inode->i_mode))
 446		fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
 447	else if (S_ISREG(inode->i_mode))
 448		fi->i_gc_failures = le16_to_cpu(ri->i_gc_failures);
 449	fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
 450	fi->i_flags = le32_to_cpu(ri->i_flags);
 451	if (S_ISREG(inode->i_mode))
 452		fi->i_flags &= ~F2FS_PROJINHERIT_FL;
 453	bitmap_zero(fi->flags, FI_MAX);
 454	fi->i_advise = ri->i_advise;
 455	fi->i_pino = le32_to_cpu(ri->i_pino);
 456	fi->i_dir_level = ri->i_dir_level;
 457
 458	get_inline_info(inode, ri);
 459
 460	fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
 461					le16_to_cpu(ri->i_extra_isize) : 0;
 462
 463	if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
 464		fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
 465	} else if (f2fs_has_inline_xattr(inode) ||
 466				f2fs_has_inline_dentry(inode)) {
 467		fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
 468	} else {
 469
 470		/*
 471		 * Previous inline data or directory always reserved 200 bytes
 472		 * in inode layout, even if inline_xattr is disabled. In order
 473		 * to keep inline_dentry's structure for backward compatibility,
 474		 * we get the space back only from inline_data.
 475		 */
 476		fi->i_inline_xattr_size = 0;
 477	}
 478
 479	if (!sanity_check_inode(inode, node_folio)) {
 480		f2fs_folio_put(node_folio, true);
 481		set_sbi_flag(sbi, SBI_NEED_FSCK);
 482		f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
 483		return -EFSCORRUPTED;
 484	}
 485
 486	/* check data exist */
 487	if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
 488		__recover_inline_status(inode, node_folio);
 489
 490	/* try to recover cold bit for non-dir inode */
 491	if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_folio)) {
 492		f2fs_folio_wait_writeback(node_folio, NODE, true, true);
 493		set_cold_node(node_folio, false);
 494		folio_mark_dirty(node_folio);
 495	}
 496
 497	/* get rdev by using inline_info */
 498	__get_inode_rdev(inode, node_folio);
 499
 500	if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
 501		fi->last_disk_size = inode->i_size;
 502
 503	if (fi->i_flags & F2FS_PROJINHERIT_FL)
 504		set_inode_flag(inode, FI_PROJ_INHERIT);
 505
 506	if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) &&
 507			F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
 508		i_projid = (projid_t)le32_to_cpu(ri->i_projid);
 509	else
 510		i_projid = F2FS_DEF_PROJID;
 511	fi->i_projid = make_kprojid(&init_user_ns, i_projid);
 512
 513	if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) &&
 514			F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
 515		fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
 516		fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
 517	}
 518
 519	if (f2fs_has_extra_attr(inode) && f2fs_sb_has_compression(sbi) &&
 520					(fi->i_flags & F2FS_COMPR_FL)) {
 521		if (F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
 522					i_compress_flag)) {
 523			unsigned short compress_flag;
 524
 525			atomic_set(&fi->i_compr_blocks,
 526					le64_to_cpu(ri->i_compr_blocks));
 527			fi->i_compress_algorithm = ri->i_compress_algorithm;
 528			fi->i_log_cluster_size = ri->i_log_cluster_size;
 529			compress_flag = le16_to_cpu(ri->i_compress_flag);
 530			fi->i_compress_level = compress_flag >>
 531						COMPRESS_LEVEL_OFFSET;
 532			fi->i_compress_flag = compress_flag &
 533					GENMASK(COMPRESS_LEVEL_OFFSET - 1, 0);
 534			fi->i_cluster_size = BIT(fi->i_log_cluster_size);
 535			set_inode_flag(inode, FI_COMPRESSED_FILE);
 536		}
 537	}
 538
 539	init_idisk_time(inode);
 540
 541	if (!sanity_check_extent_cache(inode, node_folio)) {
 542		f2fs_folio_put(node_folio, true);
 543		f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
 544		return -EFSCORRUPTED;
 545	}
 546
 547	/* Need all the flag bits */
 548	f2fs_init_read_extent_tree(inode, node_folio);
 549	f2fs_init_age_extent_tree(inode);
 550
 551	f2fs_folio_put(node_folio, true);
 552
 553	stat_inc_inline_xattr(inode);
 554	stat_inc_inline_inode(inode);
 555	stat_inc_inline_dir(inode);
 556	stat_inc_compr_inode(inode);
 557	stat_add_compr_blocks(inode, atomic_read(&fi->i_compr_blocks));
 558
 559	return 0;
 560}
 561
 562static bool is_meta_ino(struct f2fs_sb_info *sbi, unsigned int ino)
 563{
 564	return ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi) ||
 565		ino == F2FS_COMPRESS_INO(sbi);
 566}
 567
 568struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
 569{
 570	struct f2fs_sb_info *sbi = F2FS_SB(sb);
 571	struct inode *inode;
 572	int ret = 0;
 573
 574	inode = iget_locked(sb, ino);
 575	if (!inode)
 576		return ERR_PTR(-ENOMEM);
 577
 578	if (!(inode_state_read_once(inode) & I_NEW)) {
 579		if (is_meta_ino(sbi, ino)) {
 580			f2fs_err(sbi, "inaccessible inode: %lu, run fsck to repair", ino);
 581			set_sbi_flag(sbi, SBI_NEED_FSCK);
 582			ret = -EFSCORRUPTED;
 583			trace_f2fs_iget_exit(inode, ret);
 584			iput(inode);
 585			f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
 586			return ERR_PTR(ret);
 587		}
 588
 589		trace_f2fs_iget(inode);
 590		return inode;
 591	}
 592
 593	if (is_meta_ino(sbi, ino))
 594		goto make_now;
 595
 596	ret = do_read_inode(inode);
 597	if (ret)
 598		goto bad_inode;
 599make_now:
 600	if (ino == F2FS_NODE_INO(sbi)) {
 601		inode->i_mapping->a_ops = &f2fs_node_aops;
 602		mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
 603	} else if (ino == F2FS_META_INO(sbi)) {
 604		inode->i_mapping->a_ops = &f2fs_meta_aops;
 605		mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
 606	} else if (ino == F2FS_COMPRESS_INO(sbi)) {
 607#ifdef CONFIG_F2FS_FS_COMPRESSION
 608		inode->i_mapping->a_ops = &f2fs_compress_aops;
 609		/*
 610		 * generic_error_remove_folio only truncates pages of regular
 611		 * inode
 612		 */
 613		inode->i_mode |= S_IFREG;
 614#endif
 615		mapping_set_gfp_mask(inode->i_mapping,
 616			GFP_NOFS | __GFP_HIGHMEM | __GFP_MOVABLE);
 617	} else if (S_ISREG(inode->i_mode)) {
 618		inode->i_op = &f2fs_file_inode_operations;
 619		inode->i_fop = &f2fs_file_operations;
 620		inode->i_mapping->a_ops = &f2fs_dblock_aops;
 621	} else if (S_ISDIR(inode->i_mode)) {
 622		inode->i_op = &f2fs_dir_inode_operations;
 623		inode->i_fop = &f2fs_dir_operations;
 624		inode->i_mapping->a_ops = &f2fs_dblock_aops;
 625		mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
 626	} else if (S_ISLNK(inode->i_mode)) {
 627		if (file_is_encrypt(inode))
 628			inode->i_op = &f2fs_encrypted_symlink_inode_operations;
 629		else
 630			inode->i_op = &f2fs_symlink_inode_operations;
 631		inode_nohighmem(inode);
 632		inode->i_mapping->a_ops = &f2fs_dblock_aops;
 633	} else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
 634			S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
 635		inode->i_op = &f2fs_special_inode_operations;
 636		init_special_inode(inode, inode->i_mode, inode->i_rdev);
 637	} else {
 638		ret = -EIO;
 639		goto bad_inode;
 640	}
 641	f2fs_set_inode_flags(inode);
 642
 643	unlock_new_inode(inode);
 644	trace_f2fs_iget(inode);
 645	return inode;
 646
 647bad_inode:
 648	f2fs_inode_synced(inode);
 649	iget_failed(inode);
 650	trace_f2fs_iget_exit(inode, ret);
 651	return ERR_PTR(ret);
 652}
 653
 654struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
 655{
 656	struct inode *inode;
 657retry:
 658	inode = f2fs_iget(sb, ino);
 659	if (IS_ERR(inode)) {
 660		if (PTR_ERR(inode) == -ENOMEM) {
 661			memalloc_retry_wait(GFP_NOFS);
 662			goto retry;
 663		}
 664	}
 665	return inode;
 666}
 667
 668void f2fs_update_inode(struct inode *inode, struct folio *node_folio)
 669{
 670	struct f2fs_inode_info *fi = F2FS_I(inode);
 671	struct f2fs_inode *ri;
 672	struct extent_tree *et = fi->extent_tree[EX_READ];
 673
 674	f2fs_folio_wait_writeback(node_folio, NODE, true, true);
 675	folio_mark_dirty(node_folio);
 676
 677	f2fs_inode_synced(inode);
 678
 679	ri = F2FS_INODE(node_folio);
 680
 681	ri->i_mode = cpu_to_le16(inode->i_mode);
 682	ri->i_advise = fi->i_advise;
 683	ri->i_uid = cpu_to_le32(i_uid_read(inode));
 684	ri->i_gid = cpu_to_le32(i_gid_read(inode));
 685	ri->i_links = cpu_to_le32(inode->i_nlink);
 686	ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
 687
 688	if (!f2fs_is_atomic_file(inode) ||
 689			is_inode_flag_set(inode, FI_ATOMIC_COMMITTED))
 690		ri->i_size = cpu_to_le64(i_size_read(inode));
 691
 692	if (et) {
 693		read_lock(&et->lock);
 694		set_raw_read_extent(&et->largest, &ri->i_ext);
 695		read_unlock(&et->lock);
 696	} else {
 697		memset(&ri->i_ext, 0, sizeof(ri->i_ext));
 698	}
 699	set_raw_inline(inode, ri);
 700
 701	ri->i_atime = cpu_to_le64(inode_get_atime_sec(inode));
 702	ri->i_ctime = cpu_to_le64(inode_get_ctime_sec(inode));
 703	ri->i_mtime = cpu_to_le64(inode_get_mtime_sec(inode));
 704	ri->i_atime_nsec = cpu_to_le32(inode_get_atime_nsec(inode));
 705	ri->i_ctime_nsec = cpu_to_le32(inode_get_ctime_nsec(inode));
 706	ri->i_mtime_nsec = cpu_to_le32(inode_get_mtime_nsec(inode));
 707	if (S_ISDIR(inode->i_mode))
 708		ri->i_current_depth = cpu_to_le32(fi->i_current_depth);
 709	else if (S_ISREG(inode->i_mode))
 710		ri->i_gc_failures = cpu_to_le16(fi->i_gc_failures);
 711	ri->i_xattr_nid = cpu_to_le32(fi->i_xattr_nid);
 712	ri->i_flags = cpu_to_le32(fi->i_flags);
 713	ri->i_pino = cpu_to_le32(fi->i_pino);
 714	ri->i_generation = cpu_to_le32(inode->i_generation);
 715	ri->i_dir_level = fi->i_dir_level;
 716
 717	if (f2fs_has_extra_attr(inode)) {
 718		ri->i_extra_isize = cpu_to_le16(fi->i_extra_isize);
 719
 720		if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)))
 721			ri->i_inline_xattr_size =
 722				cpu_to_le16(fi->i_inline_xattr_size);
 723
 724		if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) &&
 725			F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid)) {
 726			projid_t i_projid;
 727
 728			i_projid = from_kprojid(&init_user_ns, fi->i_projid);
 729			ri->i_projid = cpu_to_le32(i_projid);
 730		}
 731
 732		if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
 733			F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
 734			ri->i_crtime = cpu_to_le64(fi->i_crtime.tv_sec);
 735			ri->i_crtime_nsec = cpu_to_le32(fi->i_crtime.tv_nsec);
 736		}
 737
 738		if (f2fs_sb_has_compression(F2FS_I_SB(inode)) &&
 739			F2FS_FITS_IN_INODE(ri, fi->i_extra_isize,
 740							i_compress_flag)) {
 741			unsigned short compress_flag;
 742
 743			ri->i_compr_blocks = cpu_to_le64(
 744					atomic_read(&fi->i_compr_blocks));
 745			ri->i_compress_algorithm = fi->i_compress_algorithm;
 746			compress_flag = fi->i_compress_flag |
 747						fi->i_compress_level <<
 748						COMPRESS_LEVEL_OFFSET;
 749			ri->i_compress_flag = cpu_to_le16(compress_flag);
 750			ri->i_log_cluster_size = fi->i_log_cluster_size;
 751		}
 752	}
 753
 754	__set_inode_rdev(inode, node_folio);
 755
 756	/* deleted inode */
 757	if (inode->i_nlink == 0)
 758		folio_clear_f2fs_inline(node_folio);
 759
 760	init_idisk_time(inode);
 761#ifdef CONFIG_F2FS_CHECK_FS
 762	f2fs_inode_chksum_set(F2FS_I_SB(inode), node_folio);
 763#endif
 764}
 765
 766void f2fs_update_inode_page(struct inode *inode)
 767{
 768	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 769	struct folio *node_folio;
 770	int count = 0;
 771retry:
 772	node_folio = f2fs_get_inode_folio(sbi, inode->i_ino);
 773	if (IS_ERR(node_folio)) {
 774		int err = PTR_ERR(node_folio);
 775
 776		/* The node block was truncated. */
 777		if (err == -ENOENT)
 778			return;
 779
 780		if (err == -EFSCORRUPTED)
 781			goto stop_checkpoint;
 782
 783		if (err == -ENOMEM || ++count <= DEFAULT_RETRY_IO_COUNT)
 784			goto retry;
 785stop_checkpoint:
 786		f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_UPDATE_INODE);
 787		return;
 788	}
 789	f2fs_update_inode(inode, node_folio);
 790	f2fs_folio_put(node_folio, true);
 791}
 792
 793int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
 794{
 795	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 796
 797	if (inode->i_ino == F2FS_NODE_INO(sbi) ||
 798			inode->i_ino == F2FS_META_INO(sbi))
 799		return 0;
 800
 801	/*
 802	 * atime could be updated without dirtying f2fs inode in lazytime mode
 803	 */
 804	if (f2fs_is_time_consistent(inode) &&
 805		!is_inode_flag_set(inode, FI_DIRTY_INODE))
 806		return 0;
 807
 808	/*
 809	 * no need to update inode page, ultimately f2fs_evict_inode() will
 810	 * clear dirty status of inode.
 811	 */
 812	if (f2fs_cp_error(sbi))
 813		return -EIO;
 814
 815	if (!f2fs_is_checkpoint_ready(sbi)) {
 816		f2fs_mark_inode_dirty_sync(inode, true);
 817		return -ENOSPC;
 818	}
 819
 820	/*
 821	 * We need to balance fs here to prevent from producing dirty node pages
 822	 * during the urgent cleaning time when running out of free sections.
 823	 */
 824	f2fs_update_inode_page(inode);
 825	if (wbc && wbc->nr_to_write)
 826		f2fs_balance_fs(sbi, true);
 827	return 0;
 828}
 829
 830void f2fs_remove_donate_inode(struct inode *inode)
 831{
 832	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 833
 834	if (list_empty(&F2FS_I(inode)->gdonate_list))
 835		return;
 836
 837	spin_lock(&sbi->inode_lock[DONATE_INODE]);
 838	list_del_init(&F2FS_I(inode)->gdonate_list);
 839	sbi->donate_files--;
 840	spin_unlock(&sbi->inode_lock[DONATE_INODE]);
 841}
 842
 843/*
 844 * Called at the last iput() if i_nlink is zero
 845 */
 846void f2fs_evict_inode(struct inode *inode)
 847{
 848	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 849	struct f2fs_inode_info *fi = F2FS_I(inode);
 850	nid_t xnid = fi->i_xattr_nid;
 851	int err = 0;
 852	bool freeze_protected = false;
 853
 854	f2fs_abort_atomic_write(inode, true);
 855
 856	if (fi->cow_inode && f2fs_is_cow_file(fi->cow_inode)) {
 857		clear_inode_flag(fi->cow_inode, FI_COW_FILE);
 858		F2FS_I(fi->cow_inode)->atomic_inode = NULL;
 859		iput(fi->cow_inode);
 860		fi->cow_inode = NULL;
 861	}
 862
 863	trace_f2fs_evict_inode(inode);
 864	truncate_inode_pages_final(&inode->i_data);
 865
 866	if ((inode->i_nlink || is_bad_inode(inode)) &&
 867		test_opt(sbi, COMPRESS_CACHE) && f2fs_compressed_file(inode))
 868		f2fs_invalidate_compress_pages(sbi, inode->i_ino);
 869
 870	if (inode->i_ino == F2FS_NODE_INO(sbi) ||
 871			inode->i_ino == F2FS_META_INO(sbi) ||
 872			inode->i_ino == F2FS_COMPRESS_INO(sbi))
 873		goto out_clear;
 874
 875	f2fs_bug_on(sbi, get_dirty_pages(inode));
 876	f2fs_remove_dirty_inode(inode);
 877	f2fs_remove_donate_inode(inode);
 878
 879	if (!IS_DEVICE_ALIASING(inode))
 880		f2fs_destroy_extent_tree(inode);
 881
 882	if (inode->i_nlink || is_bad_inode(inode))
 883		goto no_delete;
 884
 885	err = f2fs_dquot_initialize(inode);
 886	if (err) {
 887		err = 0;
 888		set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
 889	}
 890
 891	f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
 892	f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
 893	f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
 894
 895	if (!is_sbi_flag_set(sbi, SBI_IS_FREEZING)) {
 896		sb_start_intwrite(inode->i_sb);
 897		freeze_protected = true;
 898	}
 899	set_inode_flag(inode, FI_NO_ALLOC);
 900	i_size_write(inode, 0);
 901retry:
 902	if (F2FS_HAS_BLOCKS(inode))
 903		err = f2fs_truncate(inode);
 904
 905	if (time_to_inject(sbi, FAULT_EVICT_INODE))
 906		err = -EIO;
 907
 908	if (!err) {
 909		f2fs_lock_op(sbi);
 910		err = f2fs_remove_inode_page(inode);
 911		f2fs_unlock_op(sbi);
 912		if (err == -ENOENT) {
 913			err = 0;
 914
 915			/*
 916			 * in fuzzed image, another node may has the same
 917			 * block address as inode's, if it was truncated
 918			 * previously, truncation of inode node will fail.
 919			 */
 920			if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
 921				f2fs_warn(F2FS_I_SB(inode),
 922					"f2fs_evict_inode: inconsistent node id, ino:%lu",
 923					inode->i_ino);
 924				f2fs_inode_synced(inode);
 925				set_sbi_flag(sbi, SBI_NEED_FSCK);
 926			}
 927		}
 928	}
 929
 930	/* give more chances, if ENOMEM case */
 931	if (err == -ENOMEM) {
 932		err = 0;
 933		goto retry;
 934	}
 935
 936	if (IS_DEVICE_ALIASING(inode))
 937		f2fs_destroy_extent_tree(inode);
 938
 939	if (err) {
 940		f2fs_update_inode_page(inode);
 941		if (dquot_initialize_needed(inode))
 942			set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
 943
 944		/*
 945		 * If both f2fs_truncate() and f2fs_update_inode_page() failed
 946		 * due to fuzzed corrupted inode, call f2fs_inode_synced() to
 947		 * avoid triggering later f2fs_bug_on().
 948		 */
 949		if (is_inode_flag_set(inode, FI_DIRTY_INODE)) {
 950			f2fs_warn(sbi,
 951				"f2fs_evict_inode: inode is dirty, ino:%lu",
 952				inode->i_ino);
 953			f2fs_inode_synced(inode);
 954			set_sbi_flag(sbi, SBI_NEED_FSCK);
 955		}
 956	}
 957	if (freeze_protected)
 958		sb_end_intwrite(inode->i_sb);
 959no_delete:
 960	dquot_drop(inode);
 961
 962	stat_dec_inline_xattr(inode);
 963	stat_dec_inline_dir(inode);
 964	stat_dec_inline_inode(inode);
 965	stat_dec_compr_inode(inode);
 966	stat_sub_compr_blocks(inode,
 967			atomic_read(&fi->i_compr_blocks));
 968
 969	if (likely(!f2fs_cp_error(sbi) &&
 970				!is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
 971		f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
 972
 973	/*
 974	 * anyway, it needs to remove the inode from sbi->inode_list[DIRTY_META]
 975	 * list to avoid UAF in f2fs_sync_inode_meta() during checkpoint.
 976	 */
 977	f2fs_inode_synced(inode);
 978
 979	/* for the case f2fs_new_inode() was failed, .i_ino is zero, skip it */
 980	if (inode->i_ino)
 981		invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
 982							inode->i_ino);
 983	if (xnid)
 984		invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
 985	if (inode->i_nlink) {
 986		if (is_inode_flag_set(inode, FI_APPEND_WRITE))
 987			f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);
 988		if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
 989			f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
 990	}
 991	if (is_inode_flag_set(inode, FI_FREE_NID)) {
 992		f2fs_alloc_nid_failed(sbi, inode->i_ino);
 993		clear_inode_flag(inode, FI_FREE_NID);
 994	} else {
 995		/*
 996		 * If xattr nid is corrupted, we can reach out error condition,
 997		 * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).
 998		 * In that case, f2fs_check_nid_range() is enough to give a clue.
 999		 */
1000	}
1001out_clear:
1002	fscrypt_put_encryption_info(inode);
1003	fsverity_cleanup_inode(inode);
1004	clear_inode(inode);
1005}
1006
1007/* caller should call f2fs_lock_op() */
1008void f2fs_handle_failed_inode(struct inode *inode)
1009{
1010	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1011	struct node_info ni;
1012	int err;
1013
1014	/*
1015	 * clear nlink of inode in order to release resource of inode
1016	 * immediately.
1017	 */
1018	clear_nlink(inode);
1019
1020	/*
1021	 * we must call this to avoid inode being remained as dirty, resulting
1022	 * in a panic when flushing dirty inodes in gdirty_list.
1023	 */
1024	f2fs_update_inode_page(inode);
1025	f2fs_inode_synced(inode);
1026
1027	/* don't make bad inode, since it becomes a regular file. */
1028	unlock_new_inode(inode);
1029
1030	/*
1031	 * Note: we should add inode to orphan list before f2fs_unlock_op()
1032	 * so we can prevent losing this orphan when encoutering checkpoint
1033	 * and following suddenly power-off.
1034	 */
1035	err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false);
1036	if (err) {
1037		set_sbi_flag(sbi, SBI_NEED_FSCK);
1038		set_inode_flag(inode, FI_FREE_NID);
1039		f2fs_warn(sbi, "May loss orphan inode, run fsck to fix.");
1040		goto out;
1041	}
1042
1043	if (ni.blk_addr != NULL_ADDR) {
1044		err = f2fs_acquire_orphan_inode(sbi);
1045		if (err) {
1046			set_sbi_flag(sbi, SBI_NEED_FSCK);
1047			f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix.");
1048		} else {
1049			f2fs_add_orphan_inode(inode);
1050		}
1051		f2fs_alloc_nid_done(sbi, inode->i_ino);
1052	} else {
1053		set_inode_flag(inode, FI_FREE_NID);
1054	}
1055
1056out:
1057	f2fs_unlock_op(sbi);
1058
1059	/* iput will drop the inode object */
1060	iput(inode);
1061}