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 for_each_ref(int (*fn)(const char *path, const unsigned char *sha1)); 9 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 */