add openrc support for gentoo

Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>

config/init/Makefile.am

@@ -1 +1 @@
-SUBDIRS = bsd systemd sysvinit upstart
+SUBDIRS = bsd systemd sysvinit upstart openrc

config/init/openrc/Makefile.am

@@ -0,0 +1,18 @@
+EXTRA_DIST = cgmanager cgproxy
+
+if INIT_SCRIPT_OPENRC
+RC_INIT_DIR = $(sysconfdir)/init.d
+
+install-openrc: cgmanager cgproxy
+	$(MKDIR_P) $(DESTDIR)$(RC_INIT_DIR)
+	$(INSTALL_DATA) cgmanager $(DESTDIR)$(RC_INIT_DIR)/
+	$(INSTALL_DATA) cgproxy $(DESTDIR)$(RC_INIT_DIR)/
+
+uninstall-openrc:
+	rm -f $(DESTDIR)$(RC_INIT_DIR)/cgmanager
+	rm -f $(DESTDIR)$(RC_INIT_DIR)/cgroxy
+	rmdir $(DESTDIR)$(RC_INIT_DIR) || :
+
+install-data-local: install-openrc
+uninstall-local: uninstall-openrc
+endif

config/init/openrc/cgmanager

@@ -0,0 +1,15 @@
+#!/sbin/openrc-run
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+description="Control Group manager daemon"
+pidfile="/run/cgmanager.pid"
+command="/usr/sbin/cgmanager"
+command_args="-m name=systemd"
+command_background="yes"
+retry="TERM/45"
+
+depend() {
+	before cgproxy
+}

config/init/openrc/cgproxy

@@ -0,0 +1,28 @@
+#!/sbin/openrc-run
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+description="Control Group manager proxy"
+pidfile="/run/cgproxy.pid"
+command="/usr/sbin/cgproxy"
+command_args="--daemon"
+command_background="yes"
+retry="TERM/45"
+NESTED="${NESTED:-no}"
+
+depend() {
+	after cgmanager
+}
+
+start_pre() {
+	if ! /usr/sbin/cgproxy --check-master; then
+		ewarn "cgmanager is not running"
+		return 1
+	fi
+	# cgproxy should only run on container unless on older kernel
+	if [ -e /proc/self/ns/pid ] && [ "$NESTED" != "yes" ]; then
+		eerror "Too old kernel to support cgroup, please update to >3.8"
+		return 1
+	fi
+}

configure.ac

@@ -12,6 +12,7 @@ AC_CONFIG_FILES([
 	config/Makefile
 	config/init/Makefile
 	config/init/bsd/Makefile
+	config/init/openrc/Makefile
 	config/init/systemd/Makefile
 	config/init/sysvinit/Makefile
 	config/init/upstart/Makefile
@@ -78,7 +79,7 @@ AM_CONDITIONAL([DISTRO_UBUNTU], [test "x$with_distro" = "xubuntu"])
 AC_MSG_CHECKING([for init system type])
 AC_ARG_WITH([init-script],
 	    [AC_HELP_STRING([--with-init-script@<:@=TYPE@<:@,TYPE,...@:>@@:>@],
-			    [Type(s) of init script to install: bsd, sysvinit, systemd, upstart,
+			    [Type(s) of init script to install: bsd, openrc, sysvinit, systemd, upstart,
 			     distro @<:@default=distro@:>@])],[],[with_init_script=distro])
 case "$with_init_script" in
 	distro)
@@ -98,6 +99,9 @@ case "$with_init_script" in
 			slackware)
 				init_script=bsd
 				;;
+                        gentoo)
+				init_script=openrc
+				;;
 			*)
 				echo -n "Linux distribution init system unknown."
 				init_script=
@@ -113,7 +117,7 @@ esac
 (IFS="," ; for init_sys in $init_script;
 do
 	case "$init_sys" in
-		none|bsd|sysvinit|systemd|upstart)
+		none|bsd|openrc|sysvinit|systemd|upstart)
 			;;
 		*)
 			exit 1
@@ -122,6 +126,7 @@ do
 done) || AC_MSG_ERROR([Unknown init system type in $init_script])
 
 AM_CONDITIONAL([INIT_SCRIPT_BSD], [echo "$init_script" |grep -q "bsd"])
+AM_CONDITIONAL([INIT_SCRIPT_OPENRC], [echo "$init_script" |grep -q "openrc"])
 AM_CONDITIONAL([INIT_SCRIPT_SYSV], [echo "$init_script" |grep -q "sysvinit"])
 AM_CONDITIONAL([INIT_SCRIPT_SYSTEMD], [echo "$init_script" |grep -q "systemd"])
 AM_CONDITIONAL([INIT_SCRIPT_UPSTART], [echo "$init_script" |grep -q "upstart"])