From 491682978b3434153cf51c68ef0721828d0d1c07 Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Mon, 23 Sep 2019 10:45:38 +0200
Subject: rotate-keys: abort if tmp_dir cannot be created

---
 rotate-keys.in | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/rotate-keys.in b/rotate-keys.in
index 970d533..952595b 100644
--- a/rotate-keys.in
+++ b/rotate-keys.in
@@ -82,7 +82,12 @@ if trap \
   exit 1
 fi
 
-tmp_dir=$(mktemp -d "${webserver_dir}"'/tmp.XXXXXXXXXX')
+if ! tmp_dir=$(mktemp -d "${webserver_dir}"'/tmp.XXXXXXXXXX'); then
+  >&2 printf 'failed to create temporary directory - does %s have sufficient permissions on "%s"?\n' \
+    "$(whoami)" \
+    "${webserver_dir}"
+  exit 1
+fi
 trap 'rm -rf --one-file-system "${tmp_dir}"' EXIT
 
 printf '%s\n' "${hosts}" \
-- 
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