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| author | Alek Du <alek.du@intel.com> | 2009-12-17 11:14:48 +0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2009-12-22 09:46:49 -0800 |
| commit | 1cd67f6eb8617be02f3a1af104100eb5869b6e20 (patch) | |
| tree | 11cda66bb07adb1cf934a5770698acbcc36944bc /extlinux/btrfs.h | |
| parent | 9e25d6029b8c1568a74a7d9b5bc07f22b0fb8ade (diff) | |
| download | syslinux-1cd67f6eb8617be02f3a1af104100eb5869b6e20.tar.gz | |
btrfs: add btrfs file system support to extlinuxsyslinux-4.00-pre7
the extlinux.sys will be installed in btrfs first 64K blank area, and the
extlinux.conf must be in root dir...
Signed-off-by: Alek Du <alek.du@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'extlinux/btrfs.h')
| -rw-r--r-- | extlinux/btrfs.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/extlinux/btrfs.h b/extlinux/btrfs.h new file mode 100644 index 00000000..39a861a5 --- /dev/null +++ b/extlinux/btrfs.h @@ -0,0 +1,22 @@ +#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 |