Add systemd service files

Makefile.am

@@ -32,6 +32,11 @@ EXTRA_DIST = .clang-format .gitignore .github LICENSE README.md bootstrap   \
 # Enable AFS support when running distcheck.
 DISTCHECK_CONFIGURE_FLAGS = --enable-setpag
 
+if HAVE_SYSTEMD
+dist_systemdsystemunit_DATA = systemd/[email protected]
+dist_systemduserunit_DATA = systemd/krenew.service
+endif
+
 # The following library order matters for annoying reasons.  Older
 # libafsauthent contains its own com_err implementation, which we do not
 # want to pick up.

configure.ac

@@ -32,6 +32,7 @@ AM_PROG_CC_C_O
 m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
 AC_PROG_INSTALL
 AC_PROG_RANLIB
+PKG_PROG_PKG_CONFIG
 
 dnl aklog is the standard name for the utility to get AFS tokens from Kerberos
 dnl tickets.  afslog is the name of the utility that comes with Heimdal.  By
@@ -45,6 +46,36 @@ AC_ARG_WITH([aklog],
 AC_DEFINE_UNQUOTED([PATH_AKLOG], ["$PATH_AKLOG"],
     [Full path to aklog binary.])
 
+AC_ARG_WITH([systemdsystemunitdir],
+     [AS_HELP_STRING([--with-systemdsystemunitdir=DIR], [systemd])],,
+     [with_systemdsystemunitdir=auto])
+AS_IF([test "x$with_systemdsystemunitdir" = "xyes" -o "x$with_systemdsystemunitdir" = "xauto"], [
+     def_systemdsystemunitdir=$($PKG_CONFIG --variable=systemdsystemunitdir systemd)
+
+     AS_IF([test "x$def_systemdsystemunitdir" = "x"],
+   [AS_IF([test "x$with_systemdsystemunitdir" = "xyes"],
+    [AC_MSG_ERROR([systemd support requested but pkg-config unable to query systemd package])])
+    with_systemdsystemunitdir=no],
+   [with_systemdsystemunitdir="$def_systemdsystemunitdir"])])
+AS_IF([test "x$with_systemdsystemunitdir" != "xno"],
+      [AC_SUBST([systemdsystemunitdir], [$with_systemdsystemunitdir])])
+AM_CONDITIONAL([HAVE_SYSTEMD], [test "x$with_systemdsystemunitdir" != "xno"])
+
+AC_ARG_WITH([systemduserunitdir],
+     [AS_HELP_STRING([--with-systemduserunitdir=DIR], [systemd])],,
+     [with_systemduserunitdir=auto])
+AS_IF([test "x$with_systemduserunitdir" = "xyes" -o "x$with_systemduserunitdir" = "xauto"], [
+     def_systemduserunitdir=$($PKG_CONFIG --variable=systemduserunitdir systemd)
+
+     AS_IF([test "x$def_systemduserunitdir" = "x"],
+   [AS_IF([test "x$with_systemduserunitdir" = "xyes"],
+    [AC_MSG_ERROR([systemd support requested but pkg-config unable to query systemd package])])
+    with_systemduserunitdir=no],
+   [with_systemduserunitdir="$def_systemduserunitdir"])])
+AS_IF([test "x$with_systemduserunitdir" != "xno"],
+      [AC_SUBST([systemduserunitdir], [$with_systemduserunitdir])])
+AM_CONDITIONAL([HAVE_SYSTEMD], [test "x$with_systemduserunitdir" != "xno"])
+
 dnl Check for the Kerberos libraries and for portability between MIT and
 dnl Heimdal.
 RRA_LIB_KRB5

systemd/k5start@.service

@@ -0,0 +1,16 @@
+[Unit]
+Description=Kerberos credentials maintainer for user %i
+After=syslog.target network-online.target
+
+[Service]
+# Slow down starting of service and fail if k5start fails
+Type=exec
+EnvironmentFile=/etc/k5start-%i.conf
+User=%i
+ExecStart=/usr/bin/k5start $K5START_OPTS
+# Give a delay to hopefully retrieve the ticket before considering the service started
+ExecStartPost=/usr/bin/sleep 1
+Restart=always
+
+[Install]
+WantedBy=multi-user.target

systemd/krenew.service

@@ -0,0 +1,19 @@
+
+# Run krenew as a systemd user unit
+# Enable globally for all users
+# systemctl --user --global enable krenew.service
+# Enable as an individual user.
+# systemctl --user enable krenew.service
+
+[Unit]
+Description=Renew Kerberos ticket
+Documentation=man:krenew(1)
+Before=dbus.service
+
+[Service]
+Type=simple
+PIDFile=${XDG_RUNTIME_DIR}/krenew.pid
+ExecStart=/usr/bin/krenew -K 30 -i -t -v -p ${XDG_RUNTIME_DIR}/krenew.pid
+
+[Install]
+WantedBy=default.target