struct ref_lock {
char *ref_name;
- char *log_file;
+ char *orig_ref_name;
struct lock_file *lk;
unsigned char old_sha1[20];
int lock_fd;
extern struct ref_lock *lock_ref_sha1(const char *ref, const unsigned char *old_sha1);
/** Locks any ref (for 'HEAD' type refs). */
-extern struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1);
+#define REF_NODEREF 0x01
+extern struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1, int flags);
/** Release any lock taken but not written. **/
extern void unlock_ref(struct ref_lock *lock);
extern int write_ref_sha1(struct ref_lock *lock, const unsigned char *sha1, const char *msg);
/** Reads log for the value of ref during at_time. **/
-extern int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char *sha1);
+extern int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char *sha1, char **msg, unsigned long *cutoff_time, int *cutoff_tz, int *cutoff_cnt);
+
+/* iterate over reflog entries */
+typedef int each_reflog_ent_fn(unsigned char *osha1, unsigned char *nsha1, const char *, unsigned long, int, const char *, void *);
+int for_each_reflog_ent(const char *ref, each_reflog_ent_fn fn, void *cb_data);
+
+/*
+ * Calls the specified function for each reflog file until it returns nonzero,
+ * and returns the value
+ */
+extern int for_each_reflog(each_ref_fn, void *);
/** Returns 0 if target has the right format for a ref. **/
extern int check_ref_format(const char *target);
/** rename ref, return 0 on success **/
extern int rename_ref(const char *oldref, const char *newref, const char *logmsg);
+/** resolve ref in nested "gitlink" repository */
+extern int resolve_gitlink_ref(const char *name, const char *refname, unsigned char *result);
+
+/** lock a ref and then write its file */
+enum action_on_err { MSG_ON_ERR, DIE_ON_ERR, QUIET_ON_ERR };
+int update_ref(const char *action, const char *refname,
+ const unsigned char *sha1, const unsigned char *oldval,
+ int flags, enum action_on_err onerr);
+
#endif /* REFS_H */