From 0eddc318c0c4edd8743bbb0fe441d144062ef18e Mon Sep 17 00:00:00 2001
From: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Date: Fri, 22 Jan 2016 00:52:56 +0100
Subject: [PATCH] qemu-run-trick: Do not allow to be run as root, it is too
 dangerous.

If overlay operation fails then following setup can lead
to seriously breaking host system.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
---
 qemu-run-trick/qemu-setup-and-run | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/qemu-run-trick/qemu-setup-and-run b/qemu-run-trick/qemu-setup-and-run
index e67046b..dfdfe3d 100755
--- a/qemu-run-trick/qemu-setup-and-run
+++ b/qemu-run-trick/qemu-setup-and-run
@@ -240,6 +240,11 @@ function clean_setup()
   rm -rf ${RAMDISK_ARCHIVE} filelist ${INITRD_DIR_ABS}
 }
 
+if [ "$(whoami)" == "root" ] ; then
+  echo "$0: !!! TOO DANGEROUS TO RUN AS ROOT !!!"
+  exit 1;
+fi
+
 clean_setup || exit 1
 echo "=== setup_initrd_content ==="
 setup_initrd_content || exit 1
-- 
2.39.2