weston-init: Rework init sequence to avoid code duplication

The new 'weston-start' script redcues the code duplication for SysV
and SystemD based images.

(From OE-Core rev: 1963dfb002b9e0b4bff02dbf783909102ca59719)

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-graphics/wayland/weston-init.bb

@@ -3,13 +3,15 @@ LICENSE = "MIT"
 LIC_FILES_CHKSUM = "file://${COREBASE}/LICENSE;md5=4d92cd373abda3937c2bc47fbc49d690"
 
 SRC_URI = "file://init \
-           file://weston.service"
+           file://weston.service \
+           file://weston-start"
 
 S = "${WORKDIR}"
 
 do_install() {
 	install -Dm755 ${WORKDIR}/init ${D}/${sysconfdir}/init.d/weston
 	install -Dm0644 ${WORKDIR}/weston.service ${D}${systemd_system_unitdir}/weston.service
+	install -Dm755 ${WORKDIR}/weston-start ${D}${bindir}/weston-start
 }
 
 inherit allarch update-rc.d distro_features_check systemd

meta/recipes-graphics/wayland/weston-init/init

@@ -31,14 +31,7 @@ case "$1" in
   start)
         . /etc/profile
 
-        # This is all a nasty hack
-        if test -z "$XDG_RUNTIME_DIR"; then
-                export XDG_RUNTIME_DIR=/run/user/root
-                mkdir --parents $XDG_RUNTIME_DIR
-                chmod 0700 $XDG_RUNTIME_DIR
-        fi
-
-        openvt -s weston -- $OPTARGS
+        weston-start -s -- $OPTARGS
   ;;
 
   stop)

meta/recipes-graphics/wayland/weston-init/weston-start

@@ -0,0 +1,36 @@
+#!/bin/sh
+# Copyright (C) 2016 O.S. Systems Software LTDA.
+
+export PATH="/sbin:/usr/sbin:/bin:/usr/bin"
+
+usage() {
+    cat <<EOF
+    $0 <openvt arguments> -- <weston options>
+EOF
+}
+
+if test $# -lt 2; then
+	usage
+	exit 1
+fi
+
+openvt_args=""
+while [ -n "$1" ]; do
+	openvt_args="$openvt_args $1"
+	shift
+
+	if [ "$1" = "--" ]; then
+		shift
+		break
+	fi
+done
+
+weston_args=$*
+
+if test -z "$XDG_RUNTIME_DIR"; then
+    export XDG_RUNTIME_DIR=/run/user/`id -u`
+    mkdir --parents $XDG_RUNTIME_DIR
+    chmod 0700 $XDG_RUNTIME_DIR
+fi
+
+exec openvt $openvt_args -- weston $weston_args --log=/var/log/weston.log

meta/recipes-graphics/wayland/weston-init/weston.service

@@ -5,10 +5,7 @@ RequiresMountsFor=/run
 [Service]
 User=root
 EnvironmentFile=-/etc/default/weston
-Environment="XDG_RUNTIME_DIR=/run/user/root"
-ExecStartPre=/bin/mkdir -p /run/user/root
-ExecStartPre=/bin/chmod 0700 /run/user/root
-ExecStart=/usr/bin/openvt -v -e /usr/bin/weston -- $OPTARGS
+ExecStart=/usr/bin/weston-start -v -e -- $OPTARGS
 
 [Install]
 WantedBy=multi-user.target