config: perform unlocking via git_transactioncmn/config-tx

This makes the API for commiting or discarding changes the same as for
references.

1 files changed, 15 insertions, 0 deletions

diff --git a/src/config.h b/src/config.h
index f257cc90f..ba745331a 100644
--- a/src/config.h
+++ b/src/config.h
@@ -88,4 +88,19 @@ extern int git_config__cvar(
  */
 int git_config_lookup_map_enum(git_cvar_t *type_out, const char **str_out,
 			       const git_cvar_map *maps, size_t map_n, int enum_val);
+
+/**
+ * Unlock the backend with the highest priority
+ *
+ * Unlocking will allow other writers to updat the configuration
+ * file. Optionally, any changes performed since the lock will be
+ * applied to the configuration.
+ *
+ * @param cfg the configuration
+ * @param commit boolean which indicates whether to commit any changes
+ * done since locking
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_config_unlock(git_config *cfg, int commit);
+
 #endif