From d3c89d85b6492432b37c6cbec68662613da8178e Mon Sep 17 00:00:00 2001
From: Ghe Rivero <ghe@rivero.io>
Date: Wed, 15 Oct 2014 15:58:47 +0000
Subject: [PATCH] Force empty $TMPDIR inside the chroot

There are some situations (use of libpam-tmpdir) where the $TMPDIR is
defined per user, so any sudo call will define an specific $TMPDIR for
the root user which doesn't exist inside the chroot.

Change-Id: I866651fed520007506c7be83837d3791ed9f2235
Closes-Bug: #1330290
---
 lib/img-functions | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/img-functions b/lib/img-functions
index 64079bd4..b2f2aa54 100644
--- a/lib/img-functions
+++ b/lib/img-functions
@@ -64,7 +64,10 @@ function run_in_target () {
     # -E to preserve http_proxy
     ORIG_HOME=$HOME
     export HOME=/root
-    sudo -E chroot $TMP_MOUNT_PATH sh -c "$cmd"
+    # Force an empty TMPDIR inside the chroot. There is no need to use an user
+    # defined tmp dir which may not exist in the chroot.
+    # Bug: #1330290
+    sudo -E TMPDIR= chroot $TMP_MOUNT_PATH sh -c "$cmd"
     export HOME=$ORIG_HOME
 }