#define EXT2_HASH_LEGACY_UNSIGNED 3 /* reserved for userspace lib */
#define EXT2_HASH_HALF_MD4_UNSIGNED 4 /* reserved for userspace lib */
#define EXT2_HASH_TEA_UNSIGNED 5 /* reserved for userspace lib */
+#define EXT2_HASH_SIPHASH 6
#define EXT2_HASH_FLAG_INCOMPAT 0x1
#define EXT2_MIN_DESC_SIZE_64BIT 64
#define EXT2_MAX_DESC_SIZE EXT2_MIN_BLOCK_SIZE
#define EXT2_DESC_SIZE(s) \
- ((EXT2_SB(s)->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT) ? \
- (s)->s_desc_size : EXT2_MIN_DESC_SIZE)
+ (ext2fs_has_feature_64bit(s) ? (s)->s_desc_size : EXT2_MIN_DESC_SIZE)
#define EXT2_BLOCKS_PER_GROUP(s) (EXT2_SB(s)->s_blocks_per_group)
#define EXT2_INODES_PER_GROUP(s) (EXT2_SB(s)->s_inodes_per_group)
/* EXT4_EOFBLOCKS_FL 0x00400000 was here */
#define FS_NOCOW_FL 0x00800000 /* Do not cow file */
#define EXT4_SNAPFILE_FL 0x01000000 /* Inode is a snapshot */
+#define FS_DAX_FL 0x02000000 /* Inode is DAX */
#define EXT4_SNAPFILE_DELETED_FL 0x04000000 /* Snapshot is being deleted */
#define EXT4_SNAPFILE_SHRUNK_FL 0x08000000 /* Snapshot shrink has completed */
#define EXT4_INLINE_DATA_FL 0x10000000 /* Inode has inline data */
#define EXT4_PROJINHERIT_FL 0x20000000 /* Create with parents projid */
+#define EXT4_CASEFOLD_FL 0x40000000 /* Casefolded file */
#define EXT2_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
-#define EXT2_FL_USER_VISIBLE 0x204BDFFF /* User visible flags */
-#define EXT2_FL_USER_MODIFIABLE 0x204B80FF /* User modifiable flags */
+#define EXT2_FL_USER_VISIBLE 0x604BDFFF /* User visible flags */
+#define EXT2_FL_USER_MODIFIABLE 0x604B80FF /* User modifiable flags */
/*
* ioctl commands
#define EXT2_VALID_FS 0x0001 /* Unmounted cleanly */
#define EXT2_ERROR_FS 0x0002 /* Errors detected */
#define EXT3_ORPHAN_FS 0x0004 /* Orphans being recovered */
+#define EXT4_FC_REPLAY 0x0020 /* Ext4 fast commit replay ongoing */
/*
* Misc. filesystem flags
/*060*/ __u32 s_feature_incompat; /* incompatible feature set */
__u32 s_feature_ro_compat; /* readonly-compatible feature set */
/*068*/ __u8 s_uuid[16]; /* 128-bit uuid for volume */
-/*078*/ char s_volume_name[EXT2_LABEL_LEN]; /* volume name */
-/*088*/ char s_last_mounted[64]; /* directory where last mounted */
+/*078*/ __u8 s_volume_name[EXT2_LABEL_LEN]; /* volume name, no NUL? */
+/*088*/ __u8 s_last_mounted[64]; /* directory last mounted on, no NUL? */
/*0c8*/ __u32 s_algorithm_usage_bitmap; /* For compression */
/*
* Performance hints. Directory preallocation should only
__u32 s_first_error_time; /* first time an error happened */
__u32 s_first_error_ino; /* inode involved in first error */
/*1a0*/ __u64 s_first_error_block; /* block involved in first error */
- __u8 s_first_error_func[32]; /* function where the error happened */
+ __u8 s_first_error_func[32]; /* function where error hit, no NUL? */
/*1c8*/ __u32 s_first_error_line; /* line number where error happened */
__u32 s_last_error_time; /* most recent time of an error */
/*1d0*/ __u32 s_last_error_ino; /* inode involved in last error */
__u32 s_last_error_line; /* line number where error happened */
__u64 s_last_error_block; /* block involved of last error */
-/*1e0*/ __u8 s_last_error_func[32]; /* function where the error happened */
+/*1e0*/ __u8 s_last_error_func[32]; /* function where error hit, no NUL? */
#define EXT4_S_ERR_END ext4_offsetof(struct ext2_super_block, s_mount_opts)
-/*200*/ __u8 s_mount_opts[64];
+/*200*/ __u8 s_mount_opts[64]; /* default mount options, no NUL? */
/*240*/ __u32 s_usr_quota_inum; /* inode number of user quota file */
__u32 s_grp_quota_inum; /* inode number of group quota file */
- __u32 s_overhead_blocks; /* overhead blocks/clusters in fs */
+ __u32 s_overhead_clusters; /* overhead blocks/clusters in fs */
/*24c*/ __u32 s_backup_bgs[2]; /* If sparse_super2 enabled */
/*254*/ __u8 s_encrypt_algos[4]; /* Encryption algorithms in use */
/*258*/ __u8 s_encrypt_pw_salt[16]; /* Salt used for string2key algorithm */
__u8 s_lastcheck_hi;
__u8 s_first_error_time_hi;
__u8 s_last_error_time_hi;
- __u8 s_pad[2];
- __le32 s_reserved[96]; /* Padding to the end of the block */
+ __u8 s_first_error_errcode;
+ __u8 s_last_error_errcode;
+/*27c*/ __le16 s_encoding; /* Filename charset encoding */
+ __le16 s_encoding_flags; /* Filename charset encoding flags */
+ __le32 s_reserved[95]; /* Padding to the end of the block */
/*3fc*/ __u32 s_checksum; /* crc32c(superblock) */
};
#define EXT4_S_ERR_LEN (EXT4_S_ERR_END - EXT4_S_ERR_START)
+#define EXT2_LEN_STR(buf) (int)sizeof(buf), (char *)buf
/*
* Codes for operating systems
/* #define EXT2_FEATURE_COMPAT_EXCLUDE_INODE 0x0080 not used, legacy */
#define EXT2_FEATURE_COMPAT_EXCLUDE_BITMAP 0x0100
#define EXT4_FEATURE_COMPAT_SPARSE_SUPER2 0x0200
+#define EXT4_FEATURE_COMPAT_FAST_COMMIT 0x0400
+#define EXT4_FEATURE_COMPAT_STABLE_INODES 0x0800
#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
#define EXT4_FEATURE_INCOMPAT_LARGEDIR 0x4000 /* >2GB or 3-lvl htree */
#define EXT4_FEATURE_INCOMPAT_INLINE_DATA 0x8000 /* data in inode */
#define EXT4_FEATURE_INCOMPAT_ENCRYPT 0x10000
+#define EXT4_FEATURE_INCOMPAT_CASEFOLD 0x20000
#define EXT4_FEATURE_COMPAT_FUNCS(name, ver, flagname) \
static inline int ext2fs_has_feature_##name(struct ext2_super_block *sb) \
EXT4_FEATURE_COMPAT_FUNCS(lazy_bg, 2, LAZY_BG)
EXT4_FEATURE_COMPAT_FUNCS(exclude_bitmap, 2, EXCLUDE_BITMAP)
EXT4_FEATURE_COMPAT_FUNCS(sparse_super2, 4, SPARSE_SUPER2)
+EXT4_FEATURE_COMPAT_FUNCS(fast_commit, 4, FAST_COMMIT)
+EXT4_FEATURE_COMPAT_FUNCS(stable_inodes, 4, STABLE_INODES)
EXT4_FEATURE_RO_COMPAT_FUNCS(sparse_super, 2, SPARSE_SUPER)
EXT4_FEATURE_RO_COMPAT_FUNCS(large_file, 2, LARGE_FILE)
EXT4_FEATURE_INCOMPAT_FUNCS(largedir, 4, LARGEDIR)
EXT4_FEATURE_INCOMPAT_FUNCS(inline_data, 4, INLINE_DATA)
EXT4_FEATURE_INCOMPAT_FUNCS(encrypt, 4, ENCRYPT)
+EXT4_FEATURE_INCOMPAT_FUNCS(casefold, 4, CASEFOLD)
#define EXT2_FEATURE_COMPAT_SUPP 0
#define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \
#define EXT4_DEFM_DISCARD 0x0400
#define EXT4_DEFM_NODELALLOC 0x0800
+static inline int ext4_hash_in_dirent(const struct ext2_inode *inode)
+{
+ return (inode->i_flags & EXT4_ENCRYPT_FL) &&
+ (inode->i_flags & EXT4_CASEFOLD_FL);
+}
+
/*
* Structure of a directory entry
*/
};
/*
+ * Hashes for ext4_dir_entry for casefolded and ecrypted directories.
+ * This is located at the first 4 bit aligned location after the name.
+ */
+
+struct ext2_dir_entry_hash {
+ __le32 hash;
+ __le32 minor_hash;
+};
+
+#define EXT2_DIRENT_HASHES(entry) \
+ ((struct ext2_dir_entry_hash *) &entry->name[\
+ (ext2fs_dirent_name_len(entry) + \
+ EXT2_DIR_ROUND) & ~EXT2_DIR_ROUND])
+#define EXT2_DIRENT_HASH(entry) \
+ ext2fs_le32_to_cpu(EXT2_DIRENT_HASHES(entry)->hash)
+#define EXT2_DIRENT_MINOR_HASH(entry) \
+ ext2fs_le32_to_cpu(EXT2_DIRENT_HASHES(entry)->minor_hash)
+
+/*
* This is a bogus directory entry at the end of each leaf block that
* records checksums.
*/
* NOTE: It must be a multiple of 4
*/
#define EXT2_DIR_ENTRY_HEADER_LEN 8
+#define EXT2_DIR_ENTRY_HASH_LEN 8
#define EXT2_DIR_PAD 4
#define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1)
-#define EXT2_DIR_REC_LEN(name_len) (((name_len) + \
- EXT2_DIR_ENTRY_HEADER_LEN + \
- EXT2_DIR_ROUND) & \
- ~EXT2_DIR_ROUND)
+#define EXT2_DIR_REC_LEN(name_len) ext2fs_dir_rec_len(name_len, 0)
+
+static inline unsigned int ext2fs_dir_rec_len(__u8 name_len,
+ int extended)
+{
+ int rec_len = (name_len + EXT2_DIR_ENTRY_HEADER_LEN + EXT2_DIR_ROUND);
+
+ rec_len &= ~EXT2_DIR_ROUND;
+ if (extended)
+ rec_len += EXT2_DIR_ENTRY_HASH_LEN;
+ return rec_len;
+}
/*
* Constants for ext4's extended time encoding
struct mmp_struct {
__u32 mmp_magic; /* Magic number for MMP */
__u32 mmp_seq; /* Sequence no. updated periodically */
- __u64 mmp_time; /* Time last updated */
- char mmp_nodename[64]; /* Node which last updated MMP block */
- char mmp_bdevname[32]; /* Bdev which last updated MMP block */
+ __u64 mmp_time; /* Time last updated (seconds) */
+ __u8 mmp_nodename[64]; /* Node updating MMP block, no NUL? */
+ __u8 mmp_bdevname[32]; /* Bdev updating MMP block, no NUL? */
__u16 mmp_check_interval; /* Changed mmp_check_interval */
__u16 mmp_pad1;
__u32 mmp_pad2[226];
*/
#define EXT4_INLINE_DATA_DOTDOT_SIZE (4)
+#define EXT4_ENC_UTF8_12_1 1
+
+#define EXT4_ENC_STRICT_MODE_FL (1 << 0) /* Reject invalid sequences */
+
#endif /* _LINUX_EXT2_FS_H */
git://git.whamcloud.com / tools / e2fsprogs.git / blobdiff