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#ifndef __COW_H__
#define __COW_H__
#include <asm/types.h>
#if defined(__BIG_ENDIAN)
# define ntohll(x) (x)
# define htonll(x) (x)
#elif defined(__LITTLE_ENDIAN)
# define ntohll(x) bswap_64(x)
# define htonll(x) bswap_64(x)
#else
#error "__BYTE_ORDER not defined"
#endif
extern int init_cow_file(int fd, char *cow_file, char *backing_file,
int sectorsize, int alignment, int *bitmap_offset_out,
unsigned long *bitmap_len_out, int *data_offset_out);
extern int file_reader(__u64 offset, char *buf, int len, void *arg);
extern int read_cow_header(int (*reader)(__u64, char *, int, void *),
void *arg, __u32 *version_out,
char **backing_file_out, time_t *mtime_out,
unsigned long long *size_out, int *sectorsize_out,
__u32 *align_out, int *bitmap_offset_out);
extern int write_cow_header(char *cow_file, int fd, char *backing_file,
int sectorsize, int alignment,
unsigned long long *size);
extern void cow_sizes(int version, __u64 size, int sectorsize, int align,
int bitmap_offset, unsigned long *bitmap_len_out,
int *data_offset_out);
#endif
/*
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
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