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#ifndef __CRAMFS_H
#define __CRAMFS_H
#include <linux/types.h>
#include <linux/magic.h>
#define CRAMFS_SIGNATURE "Compressed ROMFS"
#define CRAMFS_MODE_WIDTH 16
#define CRAMFS_UID_WIDTH 16
#define CRAMFS_SIZE_WIDTH 24
#define CRAMFS_GID_WIDTH 8
#define CRAMFS_NAMELEN_WIDTH 6
#define CRAMFS_OFFSET_WIDTH 26
#define CRAMFS_MAXPATHLEN (((1 << CRAMFS_NAMELEN_WIDTH) - 1) << 2)
struct cramfs_inode {
__u32 mode:CRAMFS_MODE_WIDTH, uid:CRAMFS_UID_WIDTH;
__u32 size:CRAMFS_SIZE_WIDTH, gid:CRAMFS_GID_WIDTH;
__u32 namelen:CRAMFS_NAMELEN_WIDTH, offset:CRAMFS_OFFSET_WIDTH;
};
struct cramfs_info {
__u32 crc;
__u32 edition;
__u32 blocks;
__u32 files;
};
struct cramfs_super {
__u32 magic;
__u32 size;
__u32 flags;
__u32 future;
__u8 signature[16];
struct cramfs_info fsid;
__u8 name[16];
struct cramfs_inode root;
};
#define CRAMFS_FLAG_FSID_VERSION_2 0x00000001
#define CRAMFS_FLAG_SORTED_DIRS 0x00000002
#define CRAMFS_FLAG_HOLES 0x00000100
#define CRAMFS_FLAG_WRONG_SIGNATURE 0x00000200
#define CRAMFS_FLAG_SHIFTED_ROOT_OFFSET 0x00000400
#define CRAMFS_SUPPORTED_FLAGS ( 0x000000ff \
| CRAMFS_FLAG_HOLES \
| CRAMFS_FLAG_WRONG_SIGNATURE \
| CRAMFS_FLAG_SHIFTED_ROOT_OFFSET )
#ifdef __KERNEL__
int cramfs_uncompress_block(void *dst, int dstlen, void *src, int srclen);
int cramfs_uncompress_init(void);
void cramfs_uncompress_exit(void);
#endif
#endif
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