From 79ef3fb789375dfe4f191fd42d8cf7ff2dbb8cc5 Mon Sep 17 00:00:00 2001
From: Sebastian Wicki <gandro@gmx.net>
Date: Sun, 2 Feb 2014 18:32:14 +0100
Subject: Prohibit user invocation of netctl-auto [start|stop]

Instead of using systemctl to manage the netctl-auto service, some users try to
invoke the start/stop commands of netctl-auto directly. Although this behaviour
is explicitly discouraged in the man page, this seems to be a source of
confusion.

The changes introduced in de8c80f will cause other netctl-auto commands to fail
if the netctl-auto service was not spawned by systemd. Therefore, this change
emits an error message if netctl-auto [start|stop] is invoked from an
interactive terminal.
---
 src/netctl-auto | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/netctl-auto b/src/netctl-auto
index 4f53f75..507b1fc 100755
--- a/src/netctl-auto
+++ b/src/netctl-auto
@@ -253,6 +253,9 @@ case $# in
       switch-to)
         switch_to "$2";;
       start|stop)
+        if [[ -t 0 ]]; then
+            exit_error "Use 'systemctl $1 netctl-auto@$2' to $1 netctl-auto."
+        fi
         ensure_root "$(basename "$0")"
         "$1" "$2";;
       *)
-- 
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