X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=refs.h;h=553155c04a4a3586e7a0f07f26979b50b9216aa3;hb=1a82e79315ed633f6b0b1fc4076054950c5380d3;hp=60cf48086f61c9206a343425ba9fdae3dce62937;hpb=5569bf9bbedd63a00780fc5c110e0cfab3aa97b9;p=git.git

diff --git a/refs.h b/refs.h
index 60cf4808..553155c0 100644
--- a/refs.h
+++ b/refs.h
@@ -1,19 +1,42 @@
 #ifndef REFS_H
 #define REFS_H
 
+struct ref_lock {
+	char *ref_file;
+	char *log_file;
+	struct lock_file *lk;
+	unsigned char old_sha1[20];
+	int lock_fd;
+	int force_write;
+};
+
+/*
+ * Calls the specified function for each ref file until it returns nonzero,
+ * and returns the value
+ */
+extern int head_ref(int (*fn)(const char *path, const unsigned char *sha1));
+extern int for_each_ref(int (*fn)(const char *path, const unsigned char *sha1));
+extern int for_each_tag_ref(int (*fn)(const char *path, const unsigned char *sha1));
+extern int for_each_branch_ref(int (*fn)(const char *path, const unsigned char *sha1));
+extern int for_each_remote_ref(int (*fn)(const char *path, const unsigned char *sha1));
+
 /** 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);
+/** Locks a "refs/" ref returning the lock on success and NULL on failure. **/
+extern struct ref_lock *lock_ref_sha1(const char *ref, const unsigned char *old_sha1, int mustexist);
+
+/** Locks any ref (for 'HEAD' type refs). */
+extern struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1, int mustexist);
+
+/** Release any lock taken but not written. **/
+extern void unlock_ref(struct ref_lock *lock);
 
-/** 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 ref specified by the lock. **/
+extern int write_ref_sha1(struct ref_lock *lock, const unsigned char *sha1, const char *msg);
 
-/** Writes sha1 into the refs file specified. **/
-extern int write_ref_sha1_unlocked(const char *ref, const unsigned char *sha1);
+/** Reads log for the value of ref during at_time. **/
+extern int read_ref_at(const char *ref, unsigned long at_time, unsigned char *sha1);
 
 /** Returns 0 if target has the right format for a ref. **/
 extern int check_ref_format(const char *target);