[lxc-devel] [lxc/master] cmd/lxc-update-config: check for empty arguments

[brauner on Github]

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From a514f2d9432145afd50791e7cb27673956e7a64e Mon Sep 17 00:00:00 2001
From: Christian Brauner <christian.brauner at ubuntu.com>
Date: Sat, 17 Feb 2018 13:36:31 +0100
Subject: [PATCH] cmd/lxc-update-config: check for empty arguments

Signed-off-by: Christian Brauner <christian.brauner at ubuntu.com>
---
 src/lxc/cmd/lxc-update-config.in | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/lxc/cmd/lxc-update-config.in b/src/lxc/cmd/lxc-update-config.in
index 785322c38..fd9110345 100644
--- a/src/lxc/cmd/lxc-update-config.in
+++ b/src/lxc/cmd/lxc-update-config.in
@@ -14,6 +14,12 @@ EOF
     return 0
 }
 
+# Check whether any arguments are provided.
+if [ $# -eq 0 ]; then
+    usage "${0}"
+    exit 0
+fi
+
 OPTIONS=$(getopt -o c:h --long config:,help -- "${@}")
 eval set -- "${OPTIONS}"