| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame^] | 1 | #ifndef __COW_H__ |
| 2 | #define __COW_H__ |
| 3 | |
| 4 | #include <asm/types.h> |
| 5 | |
| 6 | extern int init_cow_file(int fd, char *cow_file, char *backing_file, |
| 7 | int sectorsize, int alignment, int *bitmap_offset_out, |
| 8 | unsigned long *bitmap_len_out, int *data_offset_out); |
| 9 | |
| 10 | extern int file_reader(__u64 offset, char *buf, int len, void *arg); |
| 11 | extern int read_cow_header(int (*reader)(__u64, char *, int, void *), |
| 12 | void *arg, __u32 *version_out, |
| 13 | char **backing_file_out, time_t *mtime_out, |
| 14 | unsigned long long *size_out, int *sectorsize_out, |
| 15 | __u32 *align_out, int *bitmap_offset_out); |
| 16 | |
| 17 | extern int write_cow_header(char *cow_file, int fd, char *backing_file, |
| 18 | int sectorsize, int alignment, |
| 19 | unsigned long long *size); |
| 20 | |
| 21 | extern void cow_sizes(int version, __u64 size, int sectorsize, int align, |
| 22 | int bitmap_offset, unsigned long *bitmap_len_out, |
| 23 | int *data_offset_out); |
| 24 | |
| 25 | #endif |
| 26 | |
| 27 | /* |
| 28 | * --------------------------------------------------------------------------- |
| 29 | * Local variables: |
| 30 | * c-file-style: "linux" |
| 31 | * End: |
| 32 | */ |