From 73536d15c80be96049289d96fc32122467c56b1d Mon Sep 17 00:00:00 2001 From: Matt Weber Date: Mon, 16 Dec 2019 13:27:30 -0600 Subject: [PATCH] ebtables: replace ebtables-save perl script with bash rewrite Fedora provides a bash replacement for the default ebtables-save perl script. Using it allows the ebtables run-time dependency on perl to be replaced with a runtime dependency on bash - which is lower overhead and more likely to be present on typical embedded systems already. https://bugzilla.redhat.com/show_bug.cgi?id=746040 http://pkgs.fedoraproject.org/cgit/rpms/ebtables.git/tree/ebtables-save Upstream: https://github.com/openembedded/meta-openembedded/commit/7f723007364ba79de05447671e83d4eefb3097dc Signed-off-by: Matthew Weber [ryanbarnett3@gmail.com: - changed EBTABLES executable to /usr/sbin/ebtables-legacy ] Signed-off-by: Ryan Barnett --- ebtables-save.sh | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 ebtables-save.sh diff --git a/ebtables-save.sh b/ebtables-save.sh new file mode 100644 index 0000000..2d7fc4e --- /dev/null +++ b/ebtables-save.sh @@ -0,0 +1,43 @@ +#!/bin/bash + +EBTABLES="/usr/sbin/ebtables-legacy" + +[ -x "$EBTABLES" ] || exit 1 + +echo "# Generated by ebtables-save v1.0 on $(date)" + +cnt="" +[ "x$EBTABLES_SAVE_COUNTER" = "xyes" ] && cnt="--Lc" + +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; } + + chain="" + rules="" + while read line; do + [ -z "$line" ] && continue + + case "$line" in + Bridge\ table:\ *) + echo "*${line:14}" + ;; + Bridge\ chain:\ *) + chain="${line:14}" + 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" + ;; + esac + done <