xbps-base-files: fixes for the initramfs-tools trigger.

Only mount /proc and /sys if they aren't mounted already,
use /lib/rc/bin/mouninfo from OpenRC. Bump revision.

--HG--
extra : convert_revision : 18f901f72548eaef1e040984cc72aa11ce6ea76c

triggers/initramfs-tools

@@ -16,15 +16,12 @@ targets)
 	echo "post-install"
 	;;
 run)
-	[ ! -x ./usr/sbin/update-initramfs ] && exit 0
+	[ ! -x usr/sbin/update-initramfs ] && exit 0
+	[ ! -x lib/rc/bin/mountinfo ] && exit 0
 	[ "$2" != "post-install" ] && exit 1
 
 	echo "Running $trigger trigger..."
 
-	mntproc_cmd="mount -t proc proc /proc"
-	umntproc_cmd="umount /proc"
-	mntsys_cmd="mount -t sysfs none /sys"
-	umntsys_cmd="umount /sys"
 	initramfs_cmd="update-initramfs"
 
 	if [ "$3" = "kernel" -a ! -f ./var/lib/initramfs-tools/$4 ]; then
@@ -35,11 +32,23 @@ run)
 		initramfs_cmd="$initramfs_cmd -u -k $4"
 	fi
 
-	${mntproc_cmd}
-	${mntsys_cmd}
+	if ! /lib/rc/bin/mountinfo -q /proc; then
+		mount -t proc proc /proc
+		proc_mounted=1
+	fi
+	if ! /lib/rc/bin/mountinfo -q /sys; then
+		mount -t sysfs sysfs /sys
+		sys_mounted=1
+	fi
+
 	${initramfs_cmd}
-	${umntproc_cmd}
-	${umntsys_cmd}
+
+	if [ -n "$proc_mounted" ]; then
+		umount /proc
+	fi
+	if [ -n "$sys_mounted" ]; then
+		umount /sys
+	fi
 	;;
 *)
 	exit 1