ctdb-tests: Catch cases where mktemp fails due to missing TMPDIR

TMPDIR sometimes goes missing during autobuild.  When that happens the
error messages produced by CTDB tests are not very helpful.  This
should make it clear.

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Amitay Isaacs <amitay@samba.org>
Autobuild-Date(master): Mon Mar 20 08:53:02 CET 2017 on sn-devel-144

diff --git a/ctdb/tests/run_tests.sh b/ctdb/tests/run_tests.sh
index f128d959252bb402e8582c94363fd4e488b09c7e..d5f31167ee3d3341b0ee220b12862a98e02f8643 100755 (executable)
--- a/ctdb/tests/run_tests.sh
+++ b/ctdb/tests/run_tests.sh
@@ -172,8 +172,8 @@ if ! which mktemp >/dev/null 2>&1 ; then
     }
 fi
 
-tf=$(mktemp)
-sf=$(mktemp)
+tf=$(mktemp) || die "mktemp failed for tf - is TMPDIR missing?"
+sf=$(mktemp) || die "mktemp failed for sf - is TMPDIR missing?"
 
 set -o pipefail