From 8c0e7560ba5d58c0fa284443aaf2a1ff5727afa0 Mon Sep 17 00:00:00 2001
From: sw1tchbl4d3 <sw1tchbl4d3@sw1tchbl4d3.com>
Date: Wed, 9 Feb 2022 20:17:45 +0100
Subject: [PATCH] Error if euid != 0

This can happen if the rdo binary isn't set up as SUID.
---
 rdo.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rdo.c b/rdo.c
index 80af53f..cd7be76 100644
--- a/rdo.c
+++ b/rdo.c
@@ -58,6 +58,9 @@ int main(int argc, char** argv) {
 		return 0;
 	}
 
+	if (geteuid() != 0)
+		errx(1, "The rdo binary needs to be installed as SUID.");
+
 	int ruid = getuid();
 	if (ruid == 0)
 		return runprog(argc, argv);