mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-12 21:44:06 +08:00
167 lines
3.8 KiB
C
167 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _BCACHEFS_INODE_FORMAT_H
|
|
#define _BCACHEFS_INODE_FORMAT_H
|
|
|
|
#define BLOCKDEV_INODE_MAX 4096
|
|
#define BCACHEFS_ROOT_INO 4096
|
|
|
|
struct bch_inode {
|
|
struct bch_val v;
|
|
|
|
__le64 bi_hash_seed;
|
|
__le32 bi_flags;
|
|
__le16 bi_mode;
|
|
__u8 fields[];
|
|
} __packed __aligned(8);
|
|
|
|
struct bch_inode_v2 {
|
|
struct bch_val v;
|
|
|
|
__le64 bi_journal_seq;
|
|
__le64 bi_hash_seed;
|
|
__le64 bi_flags;
|
|
__le16 bi_mode;
|
|
__u8 fields[];
|
|
} __packed __aligned(8);
|
|
|
|
struct bch_inode_v3 {
|
|
struct bch_val v;
|
|
|
|
__le64 bi_journal_seq;
|
|
__le64 bi_hash_seed;
|
|
__le64 bi_flags;
|
|
__le64 bi_sectors;
|
|
__le64 bi_size;
|
|
__le64 bi_version;
|
|
__u8 fields[];
|
|
} __packed __aligned(8);
|
|
|
|
#define INODEv3_FIELDS_START_INITIAL 6
|
|
#define INODEv3_FIELDS_START_CUR (offsetof(struct bch_inode_v3, fields) / sizeof(__u64))
|
|
|
|
struct bch_inode_generation {
|
|
struct bch_val v;
|
|
|
|
__le32 bi_generation;
|
|
__le32 pad;
|
|
} __packed __aligned(8);
|
|
|
|
/*
|
|
* bi_subvol and bi_parent_subvol are only set for subvolume roots:
|
|
*/
|
|
|
|
#define BCH_INODE_FIELDS_v2() \
|
|
x(bi_atime, 96) \
|
|
x(bi_ctime, 96) \
|
|
x(bi_mtime, 96) \
|
|
x(bi_otime, 96) \
|
|
x(bi_size, 64) \
|
|
x(bi_sectors, 64) \
|
|
x(bi_uid, 32) \
|
|
x(bi_gid, 32) \
|
|
x(bi_nlink, 32) \
|
|
x(bi_generation, 32) \
|
|
x(bi_dev, 32) \
|
|
x(bi_data_checksum, 8) \
|
|
x(bi_compression, 8) \
|
|
x(bi_project, 32) \
|
|
x(bi_background_compression, 8) \
|
|
x(bi_data_replicas, 8) \
|
|
x(bi_promote_target, 16) \
|
|
x(bi_foreground_target, 16) \
|
|
x(bi_background_target, 16) \
|
|
x(bi_erasure_code, 16) \
|
|
x(bi_fields_set, 16) \
|
|
x(bi_dir, 64) \
|
|
x(bi_dir_offset, 64) \
|
|
x(bi_subvol, 32) \
|
|
x(bi_parent_subvol, 32)
|
|
|
|
#define BCH_INODE_FIELDS_v3() \
|
|
x(bi_atime, 96) \
|
|
x(bi_ctime, 96) \
|
|
x(bi_mtime, 96) \
|
|
x(bi_otime, 96) \
|
|
x(bi_uid, 32) \
|
|
x(bi_gid, 32) \
|
|
x(bi_nlink, 32) \
|
|
x(bi_generation, 32) \
|
|
x(bi_dev, 32) \
|
|
x(bi_data_checksum, 8) \
|
|
x(bi_compression, 8) \
|
|
x(bi_project, 32) \
|
|
x(bi_background_compression, 8) \
|
|
x(bi_data_replicas, 8) \
|
|
x(bi_promote_target, 16) \
|
|
x(bi_foreground_target, 16) \
|
|
x(bi_background_target, 16) \
|
|
x(bi_erasure_code, 16) \
|
|
x(bi_fields_set, 16) \
|
|
x(bi_dir, 64) \
|
|
x(bi_dir_offset, 64) \
|
|
x(bi_subvol, 32) \
|
|
x(bi_parent_subvol, 32) \
|
|
x(bi_nocow, 8)
|
|
|
|
/* subset of BCH_INODE_FIELDS */
|
|
#define BCH_INODE_OPTS() \
|
|
x(data_checksum, 8) \
|
|
x(compression, 8) \
|
|
x(project, 32) \
|
|
x(background_compression, 8) \
|
|
x(data_replicas, 8) \
|
|
x(promote_target, 16) \
|
|
x(foreground_target, 16) \
|
|
x(background_target, 16) \
|
|
x(erasure_code, 16) \
|
|
x(nocow, 8)
|
|
|
|
enum inode_opt_id {
|
|
#define x(name, ...) \
|
|
Inode_opt_##name,
|
|
BCH_INODE_OPTS()
|
|
#undef x
|
|
Inode_opt_nr,
|
|
};
|
|
|
|
#define BCH_INODE_FLAGS() \
|
|
x(sync, 0) \
|
|
x(immutable, 1) \
|
|
x(append, 2) \
|
|
x(nodump, 3) \
|
|
x(noatime, 4) \
|
|
x(i_size_dirty, 5) \
|
|
x(i_sectors_dirty, 6) \
|
|
x(unlinked, 7) \
|
|
x(backptr_untrusted, 8)
|
|
|
|
/* bits 20+ reserved for packed fields below: */
|
|
|
|
enum bch_inode_flags {
|
|
#define x(t, n) BCH_INODE_##t = 1U << n,
|
|
BCH_INODE_FLAGS()
|
|
#undef x
|
|
};
|
|
|
|
enum __bch_inode_flags {
|
|
#define x(t, n) __BCH_INODE_##t = n,
|
|
BCH_INODE_FLAGS()
|
|
#undef x
|
|
};
|
|
|
|
LE32_BITMASK(INODE_STR_HASH, struct bch_inode, bi_flags, 20, 24);
|
|
LE32_BITMASK(INODE_NR_FIELDS, struct bch_inode, bi_flags, 24, 31);
|
|
LE32_BITMASK(INODE_NEW_VARINT, struct bch_inode, bi_flags, 31, 32);
|
|
|
|
LE64_BITMASK(INODEv2_STR_HASH, struct bch_inode_v2, bi_flags, 20, 24);
|
|
LE64_BITMASK(INODEv2_NR_FIELDS, struct bch_inode_v2, bi_flags, 24, 31);
|
|
|
|
LE64_BITMASK(INODEv3_STR_HASH, struct bch_inode_v3, bi_flags, 20, 24);
|
|
LE64_BITMASK(INODEv3_NR_FIELDS, struct bch_inode_v3, bi_flags, 24, 31);
|
|
|
|
LE64_BITMASK(INODEv3_FIELDS_START,
|
|
struct bch_inode_v3, bi_flags, 31, 36);
|
|
LE64_BITMASK(INODEv3_MODE, struct bch_inode_v3, bi_flags, 36, 52);
|
|
|
|
#endif /* _BCACHEFS_INODE_FORMAT_H */
|