Merge branch 'jk/cached-commit-buffer' into HEAD
[git/git.git] / csum-file.h
CommitLineData
c38138cd
LT
1#ifndef CSUM_FILE_H
2#define CSUM_FILE_H
3
2a128d63
NP
4struct progress;
5
c38138cd 6/* A SHA1-protected file */
98a3beab 7struct hashfile {
ec640ed1 8 int fd;
e337a04d 9 int check_fd;
ec640ed1 10 unsigned int offset;
4d273500 11 git_hash_ctx ctx;
218558af 12 off_t total;
2a128d63 13 struct progress *tp;
ec640ed1 14 const char *name;
78d1e84f
NP
15 int do_crc;
16 uint32_t crc32;
c38138cd
LT
17 unsigned char buffer[8192];
18};
19
6c526148 20/* Checkpoint */
98a3beab 21struct hashfile_checkpoint {
6c526148 22 off_t offset;
4d273500 23 git_hash_ctx ctx;
6c526148
JH
24};
25
98a3beab 26extern void hashfile_checkpoint(struct hashfile *, struct hashfile_checkpoint *);
27extern int hashfile_truncate(struct hashfile *, struct hashfile_checkpoint *);
6c526148 28
98a3beab 29/* hashclose flags */
4c81b03e
LT
30#define CSUM_CLOSE 1
31#define CSUM_FSYNC 2
32
98a3beab 33extern struct hashfile *hashfd(int fd, const char *name);
34extern struct hashfile *hashfd_check(const char *name);
35extern struct hashfile *hashfd_throughput(int fd, const char *name, struct progress *tp);
36extern int hashclose(struct hashfile *, unsigned char *, unsigned int);
37extern void hashwrite(struct hashfile *, const void *, unsigned int);
38extern void hashflush(struct hashfile *f);
39extern void crc32_begin(struct hashfile *);
40extern uint32_t crc32_end(struct hashfile *);
c38138cd 41
98a3beab 42static inline void hashwrite_u8(struct hashfile *f, uint8_t data)
b5007211 43{
98a3beab 44 hashwrite(f, &data, sizeof(data));
b5007211
KB
45}
46
98a3beab 47static inline void hashwrite_be32(struct hashfile *f, uint32_t data)
b5007211
KB
48{
49 data = htonl(data);
98a3beab 50 hashwrite(f, &data, sizeof(data));
b5007211
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51}
52
c38138cd 53#endif