rebase --root: fix amending root commit messages
[git.git] / csum-file.h
blob992e5c014122d8fed3ee782d400e61de78e55271
1 #ifndef CSUM_FILE_H
2 #define CSUM_FILE_H
4 struct progress;
6 /* A SHA1-protected file */
7 struct hashfile {
8 int fd;
9 int check_fd;
10 unsigned int offset;
11 git_hash_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];
20 /* Checkpoint */
21 struct hashfile_checkpoint {
22 off_t offset;
23 git_hash_ctx ctx;
26 extern void hashfile_checkpoint(struct hashfile *, struct hashfile_checkpoint *);
27 extern int hashfile_truncate(struct hashfile *, struct hashfile_checkpoint *);
29 /* hashclose flags */
30 #define CSUM_CLOSE 1
31 #define CSUM_FSYNC 2
33 extern struct hashfile *hashfd(int fd, const char *name);
34 extern struct hashfile *hashfd_check(const char *name);
35 extern struct hashfile *hashfd_throughput(int fd, const char *name, struct progress *tp);
36 extern int hashclose(struct hashfile *, unsigned char *, unsigned int);
37 extern void hashwrite(struct hashfile *, const void *, unsigned int);
38 extern void hashflush(struct hashfile *f);
39 extern void crc32_begin(struct hashfile *);
40 extern uint32_t crc32_end(struct hashfile *);
42 static inline void hashwrite_u8(struct hashfile *f, uint8_t data)
44 hashwrite(f, &data, sizeof(data));
47 static inline void hashwrite_be32(struct hashfile *f, uint32_t data)
49 data = htonl(data);
50 hashwrite(f, &data, sizeof(data));
53 #endif