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#ifndef _BTRFS_H_
#define _BTRFS_H_
#define BTRFS_SUPER_MAGIC 0x9123683E
#define BTRFS_SUPER_INFO_OFFSET (64 * 1024)
#define BTRFS_SUPER_INFO_SIZE 4096
#define BTRFS_MAGIC "_BHRfS_M"
#define BTRFS_CSUM_SIZE 32
#define BTRFS_FSID_SIZE 16
struct btrfs_super_block {
unsigned char csum[BTRFS_CSUM_SIZE];
/* the first 3 fields must match struct btrfs_header */
unsigned char fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */
u64 bytenr; /* this block number */
u64 flags;
/* allowed to be different from the btrfs_header from here own down */
u64 magic;
} __attribute__ ((__packed__));
#endif
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