1#ifndef CSUM_FILE_H
2#define CSUM_FILE_H
3
4struct progress;
5
6/* A SHA1-protected file */
7struct 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 */
21struct sha1file_checkpoint {
22 off_t offset;
23 git_SHA_CTX ctx;
24};
25
26extern void sha1file_checkpoint(struct sha1file *, struct sha1file_checkpoint *);
27extern int sha1file_truncate(struct sha1file *, struct sha1file_checkpoint *);
28
29/* sha1close flags */
30#define CSUM_CLOSE 1
31#define CSUM_FSYNC 2
32
33extern struct sha1file *sha1fd(int fd, const char *name);
34extern struct sha1file *sha1fd_check(const char *name);
35extern struct sha1file *sha1fd_throughput(int fd, const char *name, struct progress *tp);
36extern int sha1close(struct sha1file *, unsigned char *, unsigned int);
37extern int sha1write(struct sha1file *, const void *, unsigned int);
38extern void sha1flush(struct sha1file *f);
39extern void crc32_begin(struct sha1file *);
40extern uint32_t crc32_end(struct sha1file *);
41
42#endif