From 86dcc8e68bbc8a0205e29a1439a06b9beeafd5ee Mon Sep 17 00:00:00 2001
From: "derat@google.com"
 <derat@google.com@06c00378-0e64-4dae-be16-12b19f9950a1>
Date: Sat, 21 Nov 2009 19:49:49 +0000
Subject: [PATCH] build: Make enter_chroot.sh fail if run as root.

BUG=684

Review URL: http://codereview.chromium.org/429006

git-svn-id: svn://chrome-svn/chromeos/trunk@304 06c00378-0e64-4dae-be16-12b19f9950a1
---
 common.sh       | 7 +++++++
 enter_chroot.sh | 3 ++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/common.sh b/common.sh
index fc7a897d61..25dee4a3ed 100644
--- a/common.sh
+++ b/common.sh
@@ -171,6 +171,13 @@ function assert_outside_chroot {
   fi
 }
 
+function assert_not_root_user {
+  if [ `id -u` = 0 ]; then
+    echo "This script must be run as a non-root user."
+    exit 1
+  fi
+}
+
 # Install a package if it's not already installed
 function install_if_missing {
   # Positional parameters from calling script.  :? means "fail if unset".
diff --git a/enter_chroot.sh b/enter_chroot.sh
index 101280dee8..acfa84682d 100755
--- a/enter_chroot.sh
+++ b/enter_chroot.sh
@@ -10,8 +10,9 @@
 # The path to common.sh should be relative to your script's location.
 . "$(dirname "$0")/common.sh"
 
-# Script must be run outside the chroot
+# Script must be run outside the chroot and as a regular user.
 assert_outside_chroot
+assert_not_root_user
 
 # Define command line flags
 # See http://code.google.com/p/shflags/wiki/Documentation10x