Fix the boot process udev warning

Phenomena: there is udev warning in boot process
        tar: can't open '/etc/dev.tar': Read-only file system

The reason is that the init script /etc/rcS.d/S04udev will try to tar the /dev as cache to speed up udev at next boot time. Unfortunately, S04udev is too early and the filesystem is not writable yet.

To fix it, this patch split the cache action to another init script, and register it as /etc/rcS.d/S36, which is after the S35mountall, and the filesystem is already writable.

Signed-off-by: Yu Ke <ke.yu@intel.com>

meta/packages/udev/files/udev-cache

@@ -0,0 +1,20 @@
+#!/bin/sh -e
+
+### BEGIN INIT INFO
+# Provides:          udev-cache
+# Required-Start:    mountall
+# Required-Stop:
+# Default-Start:     S
+# Default-Stop:
+# Short-Description: cache /dev to speedup the udev next boot
+### END INIT INFO
+
+[ -d /sys/class ] || exit 1
+[ -r /proc/mounts ] || exit 1
+[ -x /sbin/udevd ] || exit 1
+
+if [ ! -e /etc/dev.tar ]; then
+	(cd /; tar cf /etc/dev.tar /dev)
+fi
+
+exit 0

meta/packages/udev/udev-115/init

@@ -42,7 +42,6 @@ kill_udevd > "/dev/null" 2>&1
 		else
 			/sbin/udevtrigger
 			/sbin/udevsettle
-			(cd /; tar cf /etc/dev.tar /dev)
 		fi
 
 echo

meta/packages/udev/udev-124/init

@@ -53,7 +53,6 @@ kill_udevd > "/dev/null" 2>&1
 		else
 			/sbin/udevadm trigger
 			/sbin/udevadm settle
-			(cd /; tar cf /etc/dev.tar /dev)
 		fi
 
 echo

meta/packages/udev/udev-141/init

@@ -53,7 +53,6 @@ kill_udevd > "/dev/null" 2>&1
 		else
 			/sbin/udevadm trigger
 			/sbin/udevadm settle
-			(cd /; tar cf /etc/dev.tar /dev)
 		fi
 
 echo

meta/packages/udev/udev-145/init

@@ -53,7 +53,6 @@ kill_udevd > "/dev/null" 2>&1
 		else
 			/sbin/udevadm trigger
 			/sbin/udevadm settle
-			(cd /; tar cf /etc/dev.tar /dev)
 		fi
 
 echo

meta/packages/udev/udev.inc

@@ -10,20 +10,25 @@ SRC_URI += " \
 	   file://mount.sh \
 	   file://network.sh \
 	   file://local.rules \
+       file://udev-cache \
            file://init"
 
 UDEV_DEVFS_RULES ?= "0"
 
-PACKAGES =+ "udev-utils libvolume-id"
+PACKAGES =+ "udev-utils libvolume-id udev-cache"
 FILES_udev-utils = "${usrbindir}/udevinfo ${usrbindir}/udevtest"
 FILES_libvolume-id = "${base_libdir}/libvolume_id.so.*"
+FILES_udev-cache = "${sysconfdir}/init.d/udev-cache"
 
-RRECOMMENDS_${PN} = "udev-extraconf"
+RRECOMMENDS_${PN} += "udev-extraconf udev-cache"
 
 inherit update-rc.d autotools pkgconfig
 
-INITSCRIPT_NAME = "udev"
+INITSCRIPT_PACKAGES = "udev udev-cache"
-INITSCRIPT_PARAMS = "start 04 S ."
+INITSCRIPT_NAME_udev = "udev"
+INITSCRIPT_PARAMS_udev = "start 04 S ."
+INITSCRIPT_NAME_udev-cache = "udev-cache"
+INITSCRIPT_PARAMS_udev-cache = "start 36 S ."
 
 export CROSS = "${TARGET_PREFIX}"
 export HOSTCC = "${BUILD_CC}"
@@ -48,6 +53,7 @@ do_install () {
 	oe_runmake 'DESTDIR=${D}' INSTALL=install install
 	install -d ${D}${sysconfdir}/init.d
 	install -m 0755 ${WORKDIR}/init ${D}${sysconfdir}/init.d/udev
+	install -m 0755 ${WORKDIR}/udev-cache ${D}${sysconfdir}/init.d/udev-cache
 
 	install -d ${D}${sysconfdir}/udev/rules.d/
 

meta/packages/udev/udev_092.bb

@@ -31,6 +31,7 @@ do_install () {
 	oe_runmake 'DESTDIR=${D}' INSTALL=install install
 	install -d ${D}${sysconfdir}/init.d
 	install -m 0755 ${WORKDIR}/init ${D}${sysconfdir}/init.d/udev
+	install -m 0755 ${WORKDIR}/udev-cache ${D}${sysconfdir}/init.d/udev-cache
 
 	install -d ${D}${sysconfdir}/udev/rules.d/
 

meta/packages/udev/udev_115.bb

@@ -30,6 +30,7 @@ do_install () {
 	oe_runmake 'DESTDIR=${D}' INSTALL=install install
 	install -d ${D}${sysconfdir}/init.d
 	install -m 0755 ${WORKDIR}/init ${D}${sysconfdir}/init.d/udev
+	install -m 0755 ${WORKDIR}/udev-cache ${D}${sysconfdir}/init.d/udev-cache
 
 	install -d ${D}${sysconfdir}/udev/rules.d/
 

meta/packages/udev/udev_124.bb

@@ -31,6 +31,7 @@ do_install () {
 	oe_runmake 'DESTDIR=${D}' INSTALL=install install
 	install -d ${D}${sysconfdir}/init.d
 	install -m 0755 ${WORKDIR}/init ${D}${sysconfdir}/init.d/udev
+	install -m 0755 ${WORKDIR}/udev-cache ${D}${sysconfdir}/init.d/udev-cache
 
 	install -d ${D}${sysconfdir}/udev/rules.d/
 

meta/packages/udev/udev_141.bb

@@ -16,8 +16,6 @@ PACKAGE_ARCH_h2200 = "h2200"
 
 require udev.inc
 
-INITSCRIPT_PARAMS = "start 03 S ."
-
 FILES_${PN} += "${base_libdir}/udev/*"
 FILES_${PN}-dbg += "${base_libdir}/udev/.debug"
 UDEV_EXTRAS = "extras/firmware/ extras/scsi_id/ extras/volume_id/"
@@ -33,6 +31,7 @@ do_install () {
 	oe_runmake 'DESTDIR=${D}' INSTALL=install install
 	install -d ${D}${sysconfdir}/init.d
 	install -m 0755 ${WORKDIR}/init ${D}${sysconfdir}/init.d/udev
+	install -m 0755 ${WORKDIR}/udev-cache ${D}${sysconfdir}/init.d/udev-cache
 
 	install -d ${D}${sysconfdir}/udev/rules.d/
 

meta/packages/udev/udev_145.bb

@@ -31,6 +31,7 @@ do_install () {
 	oe_runmake 'DESTDIR=${D}' INSTALL=install install
 	install -d ${D}${sysconfdir}/init.d
 	install -m 0755 ${WORKDIR}/init ${D}${sysconfdir}/init.d/udev
+	install -m 0755 ${WORKDIR}/udev-cache ${D}${sysconfdir}/init.d/udev-cache
 
 	install -d ${D}${sysconfdir}/udev/rules.d/
 
@@ -64,4 +65,4 @@ do_install_append_h2200() {
 
 do_stage () {
 	autotools_stage_all
-}
+}