Fix up "for_each_ref()" to be more usable, and use it in git-fsck-cache
[git/git.git] / refs.h
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1#ifndef REFS_H
2#define REFS_H
3
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4/*
5 * Calls the specified function for each ref file until it returns nonzero,
6 * and returns the value
7 */
944d8589 8extern int for_each_ref(int (*fn)(const char *path, const unsigned char *sha1));
8a65ff76 9
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10/** Reads the refs file specified into sha1 **/
11extern int get_ref_sha1(const char *ref, unsigned char *sha1);
12
13/** Locks ref and returns the fd to give to write_ref_sha1() if the ref
14 * has the given value currently; otherwise, returns -1.
15 **/
16extern int lock_ref_sha1(const char *ref, const unsigned char *old_sha1);
17
18/** Writes sha1 into the refs file specified, locked with the given fd. **/
19extern int write_ref_sha1(const char *ref, int fd, const unsigned char *sha1);
20
21/** Writes sha1 into the refs file specified. **/
22extern int write_ref_sha1_unlocked(const char *ref, const unsigned char *sha1);
23
24/** Returns 0 if target has the right format for a ref. **/
25extern int check_ref_format(const char *target);
26
27#endif /* REFS_H */