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1 | #ifndef CSUM_FILE_H | |
2 | #define CSUM_FILE_H | |
3 | ||
4 | struct progress; | |
5 | ||
6 | /* A SHA1-protected file */ | |
7 | struct sha1file { | |
8 | int fd; | |
9 | int check_fd; | |
10 | unsigned int offset; | |
11 | git_SHA_CTX ctx; | |
12 | off_t total; | |
13 | struct progress *tp; | |
14 | const char *name; | |
15 | int do_crc; | |
16 | uint32_t crc32; | |
17 | unsigned char buffer[8192]; | |
18 | }; | |
19 | ||
20 | /* Checkpoint */ | |
21 | struct sha1file_checkpoint { | |
22 | off_t offset; | |
23 | git_SHA_CTX ctx; | |
24 | }; | |
25 | ||
26 | extern void sha1file_checkpoint(struct sha1file *, struct sha1file_checkpoint *); | |
27 | extern int sha1file_truncate(struct sha1file *, struct sha1file_checkpoint *); | |
28 | ||
29 | /* sha1close flags */ | |
30 | #define CSUM_CLOSE 1 | |
31 | #define CSUM_FSYNC 2 | |
32 | ||
33 | extern struct sha1file *sha1fd(int fd, const char *name); | |
34 | extern struct sha1file *sha1fd_check(const char *name); | |
35 | extern struct sha1file *sha1fd_throughput(int fd, const char *name, struct progress *tp); | |
36 | extern int sha1close(struct sha1file *, unsigned char *, unsigned int); | |
37 | extern void sha1write(struct sha1file *, const void *, unsigned int); | |
38 | extern void sha1flush(struct sha1file *f); | |
39 | extern void crc32_begin(struct sha1file *); | |
40 | extern uint32_t crc32_end(struct sha1file *); | |
41 | ||
42 | static inline void sha1write_u8(struct sha1file *f, uint8_t data) | |
43 | { | |
44 | sha1write(f, &data, sizeof(data)); | |
45 | } | |
46 | ||
47 | static inline void sha1write_be32(struct sha1file *f, uint32_t data) | |
48 | { | |
49 | data = htonl(data); | |
50 | sha1write(f, &data, sizeof(data)); | |
51 | } | |
52 | ||
53 | #endif |