1#ifndef REFS_H 2#define REFS_H 3 4/* 5 * Calls the specified function for each ref file until it returns nonzero, 6 * and returns the value 7 */ 8extern int head_ref(int (*fn)(const char *path, const unsigned char *sha1)); 9extern int for_each_ref(int (*fn)(const char *path, const unsigned char *sha1)); 10 11/** Reads the refs file specified into sha1 **/ 12extern int get_ref_sha1(const char *ref, unsigned char *sha1); 13 14/** Locks ref and returns the fd to give to write_ref_sha1() if the ref 15 * has the given value currently; otherwise, returns -1. 16 **/ 17extern int lock_ref_sha1(const char *ref, const unsigned char *old_sha1); 18 19/** Writes sha1 into the refs file specified, locked with the given fd. **/ 20extern int write_ref_sha1(const char *ref, int fd, const unsigned char *sha1); 21 22/** Writes sha1 into the refs file specified. **/ 23extern int write_ref_sha1_unlocked(const char *ref, const unsigned char *sha1); 24 25/** Returns 0 if target has the right format for a ref. **/ 26extern int check_ref_format(const char *target); 27 28#endif /* REFS_H */