USB: ehci-dbgp: errata for EHCI debug/host controller synchronization
[linux-2.6/next.git] / arch / um / drivers / cow.h
blobdc36b222100b9abde780f996407a758f336afce4
1 #ifndef __COW_H__
2 #define __COW_H__
4 #include <asm/types.h>
6 #if defined(__KERNEL__)
8 # include <asm/byteorder.h>
10 # if defined(__BIG_ENDIAN)
11 # define ntohll(x) (x)
12 # define htonll(x) (x)
13 # elif defined(__LITTLE_ENDIAN)
14 # define ntohll(x) be64_to_cpu(x)
15 # define htonll(x) cpu_to_be64(x)
16 # else
17 # error "Could not determine byte order"
18 # endif
20 #else
21 /* For the definition of ntohl, htonl and __BYTE_ORDER */
22 #include <endian.h>
23 #include <netinet/in.h>
24 #if defined(__BYTE_ORDER)
26 # if __BYTE_ORDER == __BIG_ENDIAN
27 # define ntohll(x) (x)
28 # define htonll(x) (x)
29 # elif __BYTE_ORDER == __LITTLE_ENDIAN
30 # define ntohll(x) bswap_64(x)
31 # define htonll(x) bswap_64(x)
32 # else
33 # error "Could not determine byte order: __BYTE_ORDER uncorrectly defined"
34 # endif
36 #else /* ! defined(__BYTE_ORDER) */
37 # error "Could not determine byte order: __BYTE_ORDER not defined"
38 #endif
39 #endif /* ! defined(__KERNEL__) */
41 extern int init_cow_file(int fd, char *cow_file, char *backing_file,
42 int sectorsize, int alignment, int *bitmap_offset_out,
43 unsigned long *bitmap_len_out, int *data_offset_out);
45 extern int file_reader(__u64 offset, char *buf, int len, void *arg);
46 extern int read_cow_header(int (*reader)(__u64, char *, int, void *),
47 void *arg, __u32 *version_out,
48 char **backing_file_out, time_t *mtime_out,
49 unsigned long long *size_out, int *sectorsize_out,
50 __u32 *align_out, int *bitmap_offset_out);
52 extern int write_cow_header(char *cow_file, int fd, char *backing_file,
53 int sectorsize, int alignment,
54 unsigned long long *size);
56 extern void cow_sizes(int version, __u64 size, int sectorsize, int align,
57 int bitmap_offset, unsigned long *bitmap_len_out,
58 int *data_offset_out);
60 #endif
63 * ---------------------------------------------------------------------------
64 * Local variables:
65 * c-file-style: "linux"
66 * End: