ebtables: Remove the dependecy on bash

Rewrite ebtables-legacy-save to avoid using bashisms.

Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-networking/recipes-filter/ebtables/ebtables-2.0.11/ebtables-legacy-save

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 EBTABLES="/usr/sbin/ebtables-legacy"
 
@@ -11,7 +11,7 @@ cnt=""
 
 for table_name in $(grep -E '^ebtable_' /proc/modules | cut -f1 -d' ' | sed s/ebtable_//); do
     table=$($EBTABLES -t $table_name -L $cnt)
-    [ $? -eq 0 ] || { echo "$table"; exit -1; }
+    [ $? -eq 0 ] || { echo "$table"; exit 1; }
 
     chain=""
     rules=""
@@ -20,24 +20,23 @@ for table_name in $(grep -E '^ebtable_' /proc/modules | cut -f1 -d' ' | sed s/eb
 
 	case "$line" in 
 	    Bridge\ table:\ *)
-		echo "*${line:14}"
+		echo "*${line#Bridge table: }"
 		;;
 	    Bridge\ chain:\ *)
-		chain="${line:14}"
+		chain="${line#Bridge chain: }"
 		chain="${chain%%,*}"
 		policy="${line##*policy: }"
 		echo ":$chain $policy"
 		;;
 	    *)
-		if [ "$cnt" = "--Lc" ]; then
-		    line=${line/, pcnt \=/ -c}
-		    line=${line/-- bcnt \=/}
-		fi
-		rules="$rules-A $chain $line\n"
+		[ "$cnt" != "--Lc" ] ||
+                    line=$(echo "$line" | sed -e 's/, pcnt =/-c/' -e 's/ -- bcnt =//')
+		rules="$rules-A $chain $line
+"
 		;;
 	esac
     done <<EOF
 $table
 EOF
-    echo -e $rules
+    echo "$rules"
 done

meta-networking/recipes-filter/ebtables/ebtables_2.0.11.bb

@@ -6,8 +6,6 @@ LICENSE = "GPL-2.0-only"
 LIC_FILES_CHKSUM = "file://COPYING;md5=53b4a999993871a28ab1488fdbd2e73e"
 SECTION = "net"
 
-RDEPENDS:${PN} += "bash"
-
 RRECOMMENDS:${PN} += "kernel-module-ebtables \
     "