units: add tmp.mount

Makefile.am

@@ -151,6 +151,7 @@ dist_systemunit_DATA = \
 	units/sys-kernel-debug.mount \
 	units/sys-kernel-security.automount \
 	units/sys-kernel-security.mount \
+	units/tmp.mount \
 	units/var-lock.mount \
 	units/var-lock.service \
 	units/var-run.mount \

units/tmp.mount

@@ -0,0 +1,19 @@
+#  This file is part of systemd.
+#
+#  systemd is free software; you can redistribute it and/or modify it
+#  under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+
+[Unit]
+Description=Temporary Directory
+Before=local-fs.target
+
+[Mount]
+What=tmpfs
+Where=/tmp
+Type=tmpfs
+Options=mode=1777
+
+[Install]
+WantedBy=local-fs.target