add freebsd 4.x support into the grub shell and grub-install.

util/grub-install.in

@@ -86,6 +86,13 @@ convert () {
     gnu*)
 	tmp_disk=`echo "$1" | sed 's%\([sh]d[0-9]*\).*%\1%'`
 	tmp_part=`echo "$1" | sed "s%$tmp_disk%%"` ;;
+    freebsd*)
+	tmp_disk=`echo "$1" | sed 's%r\{0,1\}\([saw]d[0-9]*\).*$%r\1%' \
+			    | sed 's%r\{0,1\}\(da[0-9]*\).*$%r\1%'`
+	tmp_part=`echo "$1" \
+	    | sed "s%.*/r\{0,1\}[saw]d[0-9]\(s[0-9]*[a-h]\)%\1%" \
+       	    | sed "s%.*/r\{0,1\}da[0-9]\(s[0-9]*[a-h]\)%\1%"`
+	;;
     *)
 	echo "grub-install does not support your OS yet." 1>&2
 	exit 1 ;;
@@ -121,6 +128,20 @@ convert () {
 		    | sed "s%)%,$tmp_bsd_partition)%"`
 	    fi
 	    echo "$tmp_drive" ;;
+	freebsd*)
+	    if echo $tmp_part | grep "^s" >/dev/null; then
+		tmp_pc_slice=`echo $tmp_part \
+		    | sed "s%s\([0-9]*\)[a-h]*$%\1%"`
+		tmp_drive=`echo "$tmp_drive" \
+		    | sed "s%)%,\`expr "$tmp_pc_slice" - 1\`)%"`
+	    fi
+	    if echo $tmp_part | grep "[a-h]$" >/dev/null; then
+		tmp_bsd_partition=`echo "$tmp_part" \
+		    | sed "s%s\{0,1\}[0-9]*\([a-h]\)$%\1%"`
+		tmp_drive=`echo "$tmp_drive" \
+		    | sed "s%)%,$tmp_bsd_partition)%"`
+	    fi
+	    echo "$tmp_drive" ;;
 	esac
     else
 	# If no partition is specified, just print the drive name.