FreeBSD: separate rc script into xrdp and xrdp-sesman

to improve fscd(8)[1] compatibility. fscd(8) monitors daemons and
restarts after daemons crashed. We usually want to start, stop, and
restart xrdp and xrdp-sesman separately because restarting xrdp-sesman
means losing existing sessions. This change will enable fscd(8) not to
restart xrdp-sesman together when only xrdp daemon crashes.

Now rc.d/xrdp mainly has following commands:

* start      - starts xrdp
* stop       - stops xrdp
* restart    - stops xrdp, then starts it again
* allstart   - starts both xrdp and xrdp-sesman
* allstop    - stops both
* allrestart - stops both, then start them again
* status     - returns status of xrdp

rc.d/xrdp-sesman doesn't have all- prefixed commands.

[1] https://www.freshports.org/sysutils/fsc/

instfiles/Makefile.am

@@ -97,5 +97,6 @@ endif
 if FREEBSD
 # must be tab below
 install-data-hook:
-	sed -i '' 's|%%PREFIX%%|$(prefix)|g' $(DESTDIR)$(sysconfdir)/rc.d/xrdp
+	sed -i '' 's|%%PREFIX%%|$(prefix)|g' $(DESTDIR)$(sysconfdir)/rc.d/xrdp \
+                                         $(DESTDIR)$(sysconfdir)/rc.d/xrdp-sesman
 endif

instfiles/rc.d/Makefile.am

@@ -1,2 +1,2 @@
 startscriptdir = $(sysconfdir)/rc.d
-dist_startscript_SCRIPTS = xrdp
+dist_startscript_SCRIPTS = xrdp xrdp-sesman

instfiles/rc.d/xrdp

@@ -1,6 +1,7 @@
 #!/bin/sh
 #
-# Copyright (c) 1992-2015 The FreeBSD Project. All rights reserved.
+# Copyright (c) 1992-2018 The FreeBSD Project. All rights reserved.
+# Copyright (c) 2015-2018 Koichiro Iwao <meta@FreeBSD.org>
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
@@ -26,55 +27,56 @@
 # $FreeBSD$
 #
 # REQUIRE: DAEMON
-# PROVIDE: xrdp xrdp_sesman
+# PROVIDE: xrdp
 #
+# Add the following line to /etc/rc.conf to enable xrdp:
+#
+#  xrdp_enable="YES"
+#  xrdp_sesman_enable="YES"
 
 . /etc/rc.subr
 
 name="xrdp"
-rcvar=xrdp_enable
-xrdp_daemons="xrdp"
+rcvar="xrdp_enable"
 
-# Read settings and set default values.
 load_rc_config "$name"
 : ${xrdp_enable="NO"}
 
-# Enable/disable dependent daemon.
-if [ -n "${rcvar}" ] && checkyesno "xrdp_sesman_enable"; then
-	xrdp_daemons="xrdp xrdp_sesman"
-fi
+extra_commands="status allstart allstop allrestart"
+command="%%PREFIX%%/sbin/xrdp"
+
+allstart_cmd="xrdp_allstart"
+allstop_cmd="xrdp_allstop"
+allrestart_cmd="xrdp_allrestart"
 
-# Commands.
-extra_commands="reload status"
-start_cmd="xrdp_cmd"
-stop_cmd="xrdp_cmd"
-status_cmd="xrdp_cmd"
-reload_cmd="xrdp_cmd"
-rcvar_cmd="xrdp_cmd"
+xrdp_allstart()
+{
+     run_rc_command "start"
 
-# Command wrapper to call each of them per daemon.
-xrdp_cmd() {
-    local name rcvar command pidfile xrdp_daemons
-    # Prevent recursive calling.
-    unset "${rc_arg}_cmd"
-    # Stop processes in the reverse to order.
-    if [ "${rc_arg}" = "stop" ] ; then
-	xrdp_daemons=$(reverse_list ${xrdp_daemons})
+    if checkyesno "xrdp_sesman_enable" && \
+        ! %%PREFIX%%/etc/rc.d/xrdp-sesman forcestatus 1>/dev/null 2>&1; then
+        %%PREFIX%%/etc/rc.d/xrdp-sesman start || return 1
     fi
+}
+
+xrdp_allstop()
+{
+    if checkyesno "xrdp_sesman_enable" && \
+        %%PREFIX%%/etc/rc.d/xrdp-sesman forcestatus 1>/dev/null 2>&1; then
+        %%PREFIX%%/etc/rc.d/xrdp-sesman stop || return 1
+    fi
+
+    run_rc_command "stop"
+}
 
-    # Apply to all the daemons.
-    for name in ${xrdp_daemons}; do
-	rcvar=${name}_enable
-	if [ "${name}" = "xrdp_sesman" ]; then
-		command="%%PREFIX%%/sbin/xrdp-sesman"
-		pidfile="/var/run/xrdp-sesman.pid"
-	else
-		command="%%PREFIX%%/sbin/${name}"
-		pidfile="/var/run/${name}.pid"
+xrdp_allrestart()
+{
+    if checkyesno "xrdp_sesman_enable" && \
+        %%PREFIX%%/etc/rc.d/xrdp-sesman forcestatus 1>/dev/null 2>&1; then
+        %%PREFIX%%/etc/rc.d/xrdp-sesman restart || return 1
     fi
 
-	run_rc_command "${_rc_prefix}${rc_arg}" ${rc_extra_args}
-    done
+    run_rc_command "restart"
 }
 
 run_rc_command "$1"

instfiles/rc.d/xrdp-sesman

@@ -0,0 +1,44 @@
+#!/bin/sh
+#
+# Copyright (c) 1992-2015 The FreeBSD Project. All rights reserved.
+# Copyright (c) 2015-2018 Koichiro Iwao <meta@FreeBSD.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $FreeBSD$
+#
+# REQUIRE: LOGIN
+# PROVIDE: xrdp_sesman
+#
+
+. /etc/rc.subr
+
+name="xrdp_sesman"
+rcvar="xrdp_sesman_enable"
+
+load_rc_config "$name"
+: ${xrdp_sesman_enable="NO"}
+
+extra_commands="status"
+command="%%PREFIX%%/sbin/xrdp-sesman"
+
+run_rc_command "$1"