1 files changed, 16 insertions, 0 deletions
diff --git a/usage.c b/usage.c
index 1dad03fb5c..17f52c1b5c 100644
--- a/usage.c
+++ b/usage.c
@@ -70,6 +70,21 @@ void set_error_routine(void (*routine)(const char *err, va_list params))
 	error_routine = routine;
 }
 
+void (*get_error_routine(void))(const char *err, va_list params)
+{
+	return error_routine;
+}
+
+void set_warn_routine(void (*routine)(const char *warn, va_list params))
+{
+	warn_routine = routine;
+}
+
+void (*get_warn_routine(void))(const char *warn, va_list params)
+{
+	return warn_routine;
+}
+
 void set_die_is_recursing_routine(int (*routine)(void))
 {
 	die_is_recursing = routine;
@@ -148,6 +163,7 @@ void NORETURN die_errno(const char *fmt, ...)
 	va_end(params);
 }
 
+#undef error_errno
 int error_errno(const char *fmt, ...)
 {
 	char buf[1024];