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95fc75129a
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>
22 lines
769 B
C
22 lines
769 B
C
#ifndef REFS_H
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#define REFS_H
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/** Reads the refs file specified into sha1 **/
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extern int get_ref_sha1(const char *ref, unsigned char *sha1);
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/** Locks ref and returns the fd to give to write_ref_sha1() if the ref
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* has the given value currently; otherwise, returns -1.
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**/
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extern int lock_ref_sha1(const char *ref, const unsigned char *old_sha1);
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/** Writes sha1 into the refs file specified, locked with the given fd. **/
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extern int write_ref_sha1(const char *ref, int fd, const unsigned char *sha1);
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/** Writes sha1 into the refs file specified. **/
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extern int write_ref_sha1_unlocked(const char *ref, const unsigned char *sha1);
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/** Returns 0 if target has the right format for a ref. **/
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extern int check_ref_format(const char *target);
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#endif /* REFS_H */
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