1 files changed, 8 insertions, 0 deletions
diff --git a/src/user/lib/include/err.h b/src/user/lib/include/err.h
index e69de29..9ce4253 100644
--- a/src/user/lib/include/err.h
+++ b/src/user/lib/include/err.h
@@ -0,0 +1,8 @@
+#pragma once
+#include <stdarg.h>
+
+_Noreturn void err(int ret, const char *fmt, ...);
+_Noreturn void errx(int ret, const char *fmt, ...);
+
+void vwarn(const char *fmt, va_list args);
+void vwarnx(const char *fmt, va_list args);