52c7378236
Since on some 64-bit systems __u64 is rightfully defined to unsigned long and GCC recognizes anyway unsigned long and unsigned long long as different, fix some types back to being unsigned long long to avoid warnings and errors (for prototype mismatch) on those systems. Thanks to the report by Wesley Emeneker wesleyemeneker (at) google (dot) com Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
#ifndef __COW_H__
|
|
#define __COW_H__
|
|
|
|
#include <asm/types.h>
|
|
|
|
#if defined(__KERNEL__)
|
|
|
|
# include <asm/byteorder.h>
|
|
|
|
# if defined(__BIG_ENDIAN)
|
|
# define ntohll(x) (x)
|
|
# define htonll(x) (x)
|
|
# elif defined(__LITTLE_ENDIAN)
|
|
# define ntohll(x) be64_to_cpu(x)
|
|
# define htonll(x) cpu_to_be64(x)
|
|
# else
|
|
# error "Could not determine byte order"
|
|
# endif
|
|
|
|
#else
|
|
/* For the definition of ntohl, htonl and __BYTE_ORDER */
|
|
#include <endian.h>
|
|
#include <netinet/in.h>
|
|
#if defined(__BYTE_ORDER)
|
|
|
|
# if __BYTE_ORDER == __BIG_ENDIAN
|
|
# define ntohll(x) (x)
|
|
# define htonll(x) (x)
|
|
# elif __BYTE_ORDER == __LITTLE_ENDIAN
|
|
# define ntohll(x) bswap_64(x)
|
|
# define htonll(x) bswap_64(x)
|
|
# else
|
|
# error "Could not determine byte order: __BYTE_ORDER uncorrectly defined"
|
|
# endif
|
|
|
|
#else /* ! defined(__BYTE_ORDER) */
|
|
# error "Could not determine byte order: __BYTE_ORDER not defined"
|
|
#endif
|
|
#endif /* ! defined(__KERNEL__) */
|
|
|
|
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:
|
|
*/
|