From 61ebaafd0a262ea11f5cc306888cc7dbd2a69f01 Mon Sep 17 00:00:00 2001
From: sw1tchbl4d3 <sw1tchbl4d3@sw1tchbl4d3.com>
Date: Wed, 14 Jul 2021 06:12:50 +0200
Subject: [PATCH] Check return values of setuid() and setgid()

---
 rdo.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/rdo.c b/rdo.c
index 00c39e0..f6f8801 100644
--- a/rdo.c
+++ b/rdo.c
@@ -33,8 +33,10 @@ void runprog(int argc, char** argv) {
 	for(int i=0; i<argc; i++)
 		argv[i] = argv[i + 1];
 
-	setuid(0);
-	setgid(0);
+	if (setuid(0) == -1)
+		err(1, "Could not setuid");
+	if (setgid(0) == -1)
+		err(1, "Could not setgid");
 
 	if (execvp(argv[0], argv) != 0) 
 		perror(argv[0]);