Merge system-wide Vixie cron updates.

I don't believe that anyone should be running system-wide cron processes these
days (the attack surface is rather large), but should use separate per-user or
per-service mcron daemon processes.  But mcron is advertised as a drop-in
Vixie replacement, so we should do what we can to make it safe in this use
case.

I've performed a basic vetting of the changes against vandalism, but haven't
verified the correctness of the code or done any checking; the changes are
being accepted on the basis that almost anything is an improvement on what
currently exists.

1 files changed, 43 insertions, 0 deletions

diff --git a/src/mcron/config.scm.in.in b/src/mcron/config.scm.in.in
new file mode 100644
index 0000000..769a913
--- /dev/null
+++ b/src/mcron/config.scm.in.in
@@ -0,0 +1,43 @@
+;;;; config.scm -- variables defined at configure time
+;;; Copyright © 2003 Dale Mellor <dale_mellor@users.sourceforge.net>
+;;; Copyright © 2015, 2016 Mathieu Lirzin <mthl@gnu.org>
+;;;
+;;; This file is part of GNU Mcron.
+;;;
+;;; GNU Mcron 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 3 of the License, or
+;;; (at your option) any later version.
+;;;
+;;; GNU Mcron is distributed in the hope that it will be useful,
+;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Mcron.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (mcron config))
+
+(define-public config-package-name "@PACKAGE_NAME@")
+(define-public config-package-version "@PACKAGE_VERSION@")
+(define-public config-package-string "@PACKAGE_STRING@")
+(define-public config-package-bugreport "@PACKAGE_BUGREPORT@")
+(define-public config-package-url "@PACKAGE_URL@")
+(define-public config-sendmail "@SENDMAIL@")
+
+(define-public config-sbin-dir "%sbindir%")
+(define-public config-spool-dir "@CONFIG_SPOOL_DIR@")
+(define-public config-socket-file "@CONFIG_SOCKET_FILE@")
+(define-public config-allow-file "@CONFIG_ALLOW_FILE@")
+(define-public config-deny-file "@CONFIG_DENY_FILE@")
+(define-public config-pid-file "@CONFIG_PID_FILE@")
+(define-public config-tmp-dir "@CONFIG_TMP_DIR@")
+
+;;;
+;;; Runtime configuration
+;;;
+
+(define-public config-debug
+  ;; Trigger the display of Guile stack traces on errors.
+  (getenv "MCRON_DEBUG"))