#!/bin/sh
# if there are no ifname parameters, just use NAME=KERNEL
if ! getarg ifname= >/dev/null ; then
return
fi
command -v parse_ifname_opts >/dev/null || . /lib/net-lib.sh
{
for p in $(getargs ifname=); do
parse_ifname_opts $p
if [ -f /tmp/ifname-$ifname_mac ]; then
read oldif < /tmp/ifname-$ifname_mac
fi
if [ -f /tmp/ifname-$ifname_if ]; then
read oldmac < /tmp/ifname-$ifname_if
fi
if [ -n "$oldif" -a -n "$oldmac" -a "$oldif" = "$ifname_if" -a "$oldmac" = "$ifname_mac" ]; then
# skip same ifname= declaration
continue
fi
[ -n "$oldif" ] && warn "Multiple interface names specified for MAC $ifname_mac: $oldif"
[ -n "$oldmac" ] && warn "Multiple MAC specified for $ifname_if: $oldmac"
printf 'SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="%s", ATTR{type}=="1", NAME="%s"\n' "$ifname_mac" "$ifname_if"
echo $ifname_if > /tmp/ifname-$ifname_mac
echo $ifname_mac > /tmp/ifname-$ifname_if
done
} >> /etc/udev/rules.d/80-ifname.rules