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Output init progress to /dev/kmsg

This enables debug of early-init problems via the use of the earlyprintk kernel parameter.

--- a/initramfs-init.in

+++ b/initramfs-init.in

@@ -10,6 +10,7 @@

 # some helpers

 ebegin() {

 	last_emsg="$*"

+	echo "$last_emsg..." > /dev/kmsg

 	[ "$KOPT_quiet" = yes ] && return 0

 	echo -n " * $last_emsg: "

 }

@@ -16,10 +17,12 @@

 eend() {

 	local msg

 	if [ "$1" = 0 ] || [ $# -lt 1 ] ; then

+		echo "$last_emsg: ok." > /dev/kmsg

 		[ "$KOPT_quiet" = yes ] && return 0

 		echo "ok."

 	else

 		shift

+		echo "$last_emsg: failed. $*" > /dev/kmsg

 		if [ "$KOPT_quiet" = "yes" ]; then

 			echo -n "$last_emsg "

 		fi

@@ -190,7 +193,7 @@

 			echo "ERROR: DHCP requested but not present in initrd"

 			return 1

 		fi

-		ebegin "Obtaining IP via DHCP ($device)..."

+		ebegin "Obtaining IP via DHCP ($device)"

 		ifconfig "$device" 0.0.0.0

 		udhcpc -i "$device" -f -q

 		eend $?

@@ -197,7 +200,7 @@

 	else

 		# manual configuration

 		[ -n "$client_ip" -a -n "$netmask" ] || return

-		ebegin "Setting IP ($device)..."

+		ebegin "Setting IP ($device)"

 		if ifconfig "$device" "$client_ip" netmask "$netmask"; then

 			[ -z "$gw_ip" ] || ip route add 0.0.0.0/0 via "$gw_ip" dev "$device"

 		fi

@@ -311,11 +314,16 @@

 # error message.

 [ -c /dev/null ] || mknod -m 666 /dev/null c 1 3

-mount -t proc -o noexec,nosuid,nodev proc /proc

 mount -t sysfs -o noexec,nosuid,nodev sysfs /sys

 mount -t devtmpfs -o exec,nosuid,mode=0755,size=2M devtmpfs /dev 2>/dev/null \

 	|| mount -t tmpfs -o exec,nosuid,mode=0755,size=2M tmpfs /dev

+# Make sure /dev/kmsg is a device node. Writing to /dev/kmsg allows the use of the

+# earlyprintk kernel option to monitor early init progress. As above, the -c check

+# prevents an error if the device node has already been seeded.

+[ -c /dev/kmsg ] || mknod -m 660 /dev/kmsg c 1 11

+

+mount -t proc -o noexec,nosuid,nodev proc /proc

 # pty device nodes (later system will need it)

 [ -c /dev/ptmx ] || mknod -m 666 /dev/ptmx c 5 2

 [ -d /dev/pts ] || mkdir -m 755 /dev/pts

@@ -353,6 +361,7 @@

 	done

 done

+echo "Alpine Init $VERSION" > /dev/kmsg

 [ "$KOPT_quiet" = yes ] || echo "Alpine Init $VERSION"

 # enable debugging if requested