git/refs.h
Daniel Barkalow 95fc75129a [PATCH] Operations on refs
This patch adds code to read a hash out of a specified file under
{GIT_DIR}/refs/, and to write such files atomically and optionally with an
compare and lock.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-06 17:09:45 -07:00

22 lines
769 B
C

#ifndef REFS_H
#define REFS_H
/** Reads the refs file specified into sha1 **/
extern int get_ref_sha1(const char *ref, unsigned char *sha1);
/** Locks ref and returns the fd to give to write_ref_sha1() if the ref
* has the given value currently; otherwise, returns -1.
**/
extern int lock_ref_sha1(const char *ref, const unsigned char *old_sha1);
/** Writes sha1 into the refs file specified, locked with the given fd. **/
extern int write_ref_sha1(const char *ref, int fd, const unsigned char *sha1);
/** Writes sha1 into the refs file specified. **/
extern int write_ref_sha1_unlocked(const char *ref, const unsigned char *sha1);
/** Returns 0 if target has the right format for a ref. **/
extern int check_ref_format(const char *target);
#endif /* REFS_H */