mirror of
https://git.openwrt.org/project/make_ext4fs.git
synced 2024-11-26 17:21:13 -05:00
142 lines
3.6 KiB
C
142 lines
3.6 KiB
C
/****************************************************************************
|
|
****************************************************************************
|
|
***
|
|
*** This header was automatically generated from a Linux kernel header
|
|
*** of the same name, to make information necessary for userspace to
|
|
*** call into the kernel available to libc. It contains only constants,
|
|
*** structures, and macros generated from the original header, and thus,
|
|
*** contains no copyrightable information.
|
|
***
|
|
****************************************************************************
|
|
****************************************************************************/
|
|
#ifndef _LINUX_JBD2_H
|
|
#define _LINUX_JBD2_H
|
|
|
|
#define JBD2_DEBUG
|
|
#define jfs_debug jbd_debug
|
|
|
|
#define journal_oom_retry 1
|
|
|
|
#undef JBD2_PARANOID_IOFAIL
|
|
|
|
#define JBD2_DEFAULT_MAX_COMMIT_AGE 5
|
|
|
|
#define jbd_debug(f, a...)
|
|
|
|
#define JBD2_MIN_JOURNAL_BLOCKS 1024
|
|
|
|
#define JBD2_MAGIC_NUMBER 0xc03b3998U
|
|
|
|
#define JBD2_DESCRIPTOR_BLOCK 1
|
|
#define JBD2_COMMIT_BLOCK 2
|
|
#define JBD2_SUPERBLOCK_V1 3
|
|
#define JBD2_SUPERBLOCK_V2 4
|
|
#define JBD2_REVOKE_BLOCK 5
|
|
|
|
typedef struct journal_header_s
|
|
{
|
|
__be32 h_magic;
|
|
__be32 h_blocktype;
|
|
__be32 h_sequence;
|
|
} journal_header_t;
|
|
|
|
#define JBD2_CRC32_CHKSUM 1
|
|
#define JBD2_MD5_CHKSUM 2
|
|
#define JBD2_SHA1_CHKSUM 3
|
|
|
|
#define JBD2_CRC32_CHKSUM_SIZE 4
|
|
|
|
#define JBD2_CHECKSUM_BYTES (32 / sizeof(__u32))
|
|
|
|
struct commit_header {
|
|
__be32 h_magic;
|
|
__be32 h_blocktype;
|
|
__be32 h_sequence;
|
|
unsigned char h_chksum_type;
|
|
unsigned char h_chksum_size;
|
|
unsigned char h_padding[2];
|
|
__be32 h_chksum[JBD2_CHECKSUM_BYTES];
|
|
__be64 h_commit_sec;
|
|
__be32 h_commit_nsec;
|
|
};
|
|
|
|
typedef struct journal_block_tag_s
|
|
{
|
|
__be32 t_blocknr;
|
|
__be32 t_flags;
|
|
__be32 t_blocknr_high;
|
|
} journal_block_tag_t;
|
|
|
|
#define JBD2_TAG_SIZE32 (offsetof(journal_block_tag_t, t_blocknr_high))
|
|
#define JBD2_TAG_SIZE64 (sizeof(journal_block_tag_t))
|
|
|
|
typedef struct jbd2_journal_revoke_header_s
|
|
{
|
|
journal_header_t r_header;
|
|
__be32 r_count;
|
|
} jbd2_journal_revoke_header_t;
|
|
|
|
#define JBD2_FLAG_ESCAPE 1
|
|
#define JBD2_FLAG_SAME_UUID 2
|
|
#define JBD2_FLAG_DELETED 4
|
|
#define JBD2_FLAG_LAST_TAG 8
|
|
|
|
typedef struct journal_superblock_s
|
|
{
|
|
|
|
journal_header_t s_header;
|
|
|
|
__be32 s_blocksize;
|
|
__be32 s_maxlen;
|
|
__be32 s_first;
|
|
|
|
__be32 s_sequence;
|
|
__be32 s_start;
|
|
|
|
__be32 s_errno;
|
|
|
|
__be32 s_feature_compat;
|
|
__be32 s_feature_incompat;
|
|
__be32 s_feature_ro_compat;
|
|
|
|
__u8 s_uuid[16];
|
|
|
|
__be32 s_nr_users;
|
|
|
|
__be32 s_dynsuper;
|
|
|
|
__be32 s_max_transaction;
|
|
__be32 s_max_trans_data;
|
|
|
|
__u32 s_padding[44];
|
|
|
|
__u8 s_users[16*48];
|
|
|
|
} journal_superblock_t;
|
|
|
|
#define JBD2_HAS_COMPAT_FEATURE(j,mask) ((j)->j_format_version >= 2 && ((j)->j_superblock->s_feature_compat & cpu_to_be32((mask))))
|
|
#define JBD2_HAS_RO_COMPAT_FEATURE(j,mask) ((j)->j_format_version >= 2 && ((j)->j_superblock->s_feature_ro_compat & cpu_to_be32((mask))))
|
|
#define JBD2_HAS_INCOMPAT_FEATURE(j,mask) ((j)->j_format_version >= 2 && ((j)->j_superblock->s_feature_incompat & cpu_to_be32((mask))))
|
|
|
|
#define JBD2_FEATURE_COMPAT_CHECKSUM 0x00000001
|
|
|
|
#define JBD2_FEATURE_INCOMPAT_REVOKE 0x00000001
|
|
#define JBD2_FEATURE_INCOMPAT_64BIT 0x00000002
|
|
#define JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT 0x00000004
|
|
|
|
#define JBD2_KNOWN_COMPAT_FEATURES JBD2_FEATURE_COMPAT_CHECKSUM
|
|
#define JBD2_KNOWN_ROCOMPAT_FEATURES 0
|
|
#define JBD2_KNOWN_INCOMPAT_FEATURES (JBD2_FEATURE_INCOMPAT_REVOKE | JBD2_FEATURE_INCOMPAT_64BIT | JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT)
|
|
|
|
#define BJ_None 0
|
|
#define BJ_Metadata 1
|
|
#define BJ_Forget 2
|
|
#define BJ_IO 3
|
|
#define BJ_Shadow 4
|
|
#define BJ_LogCtl 5
|
|
#define BJ_Reserved 6
|
|
#define BJ_Types 7
|
|
|
|
#endif
|
|
|