From: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Date: Thu, 21 Jan 2016 23:52:56 +0000 (+0100)
Subject: qemu-run-trick: Do not allow to be run as root, it is too dangerous.
X-Git-Url: https://rtime.felk.cvut.cz/gitweb/pisa/qemu-utils.git/commitdiff_plain/0eddc318c0c4edd8743bbb0fe441d144062ef18e

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>
---

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