| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | #ifndef __COW_H__ |
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| 3 | #define __COW_H__ |
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| 4 | |
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| 5 | #include <asm/types.h> |
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| 6 | |
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| 7 | extern int init_cow_file(int fd, char *cow_file, char *backing_file, |
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| 8 | int sectorsize, int alignment, int *bitmap_offset_out, |
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| 9 | unsigned long *bitmap_len_out, int *data_offset_out); |
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| 10 | |
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| 11 | extern int file_reader(__u64 offset, char *buf, int len, void *arg); |
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| 12 | extern int (int (*reader)(__u64, char *, int, void *), |
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| 13 | void *arg, __u32 *version_out, |
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| 14 | char **backing_file_out, long long *mtime_out, |
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| 15 | unsigned long long *size_out, int *sectorsize_out, |
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| 16 | __u32 *align_out, int *bitmap_offset_out); |
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| 17 | |
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| 18 | extern int (char *cow_file, int fd, char *backing_file, |
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| 19 | int sectorsize, int alignment, |
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| 20 | unsigned long long *size); |
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| 21 | |
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| 22 | extern void cow_sizes(int version, __u64 size, int sectorsize, int align, |
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| 23 | int bitmap_offset, unsigned long *bitmap_len_out, |
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| 24 | int *data_offset_out); |
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| 25 | |
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| 26 | #endif |
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| 27 | |
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