From fa5a5f46b48b060fea6bca99b550342c48749812 Mon Sep 17 00:00:00 2001
From: Matthias Radestock <matthias.radestock@gmail.com>
Date: Tue, 26 Aug 2014 13:40:09 +0100
Subject: [PATCH] usability: check that script is being run as root so we can
 display a nicer error if not

---
 weaver/weave | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/weaver/weave b/weaver/weave
index 560efad3..63fab17a 100755
--- a/weaver/weave
+++ b/weaver/weave
@@ -18,6 +18,11 @@ usage() {
 
 shift 2 || usage
 
+[ `id -u` = 0 ] || {
+    echo "weave must be run as 'root'"
+    exit 1
+}
+
 # pre-create bridge so we can set the MTU
 [ ! -d /sys/class/net/$BRIDGE ] && {
     ip link add dev $BRIDGE type bridge