| /* SPDX-License-Identifier: GPL-2.0 */ | |
| #ifndef __COW_H__ | |
| #define __COW_H__ | |
| #include <asm/types.h> | |
| 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, long long *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 |