diff --git a/src/lib/libc_old/sys/auth.c b/src/lib/libc_old/sys/auth.c
new file mode 100644
index 0000000..ef002f9
--- /dev/null
+++ b/src/lib/libc_old/sys/auth.c
@@ -0,0 +1,31 @@
+#include <stdlib.h>
+
+typedef 	struct _UbixUser UbixUser;
+struct _UbixUser
+{
+	char *username;
+	char *password;
+	int uid;
+	int gid;
+	char *home;
+	char *shell;
+};
+
+
+int auth(char *username, char *password)
+{
+	UbixUser *uu;
+
+	uu = malloc(sizeof *uu);
+	uu->uid = -1;
+	uu->username = username;
+	uu->password = password;
+
+	asm volatile(
+	"int %0\n"
+	: : "i" (0x80), "a" (35), "b" (uu)
+	);
+	if(uu->uid == -1)
+		return 0;
+	return 1;
+}