From c996f586deeea47cb4d9a41ed7c7a3f692d9d115 Mon Sep 17 00:00:00 2001
From: Nate Lawson <njl@FreeBSD.org>
Date: Mon, 25 Jul 2005 16:43:12 +0000
Subject: [PATCH] powerd(8) requires root permissions to run so notify the user
 if they try to start it without this.

Submitted by:	Philip S. Schulz
MFC after:	2 days
---
 usr.sbin/powerd/powerd.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/usr.sbin/powerd/powerd.c b/usr.sbin/powerd/powerd.c
index 555218c831b..7c8ab4042cc 100644
--- a/usr.sbin/powerd/powerd.c
+++ b/usr.sbin/powerd/powerd.c
@@ -269,6 +269,10 @@ main(int argc, char * argv[])
 	vflag = 0;
 	apm_fd = -1;
 
+	/* User must be root to control frequencies. */
+	if (geteuid() != 0)
+		errx(1, "must be root to run");
+
 	while ((ch = getopt(argc, argv, "a:b:i:n:p:r:v")) != EOF)
 		switch (ch) {
 		case 'a':