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#!/bin/bash
znet_base_args="--no-settle --yes --no-root-update --force"
# at this point in time dracut's vinfo() only logs to journal which is hard for
# s390 users to find and access on a line mode console such as 3215 mode
# so use a vinfo alternative that still prints to the console via kmsg
znet_vinfo() {
while read -r _znet_vinfo_line || [ -n "$_znet_vinfo_line" ]; do
# Prefix "<30>" represents facility LOG_DAEMON 3 and loglevel INFO 6:
# (facility << 3) | level.
echo "<30>dracut: $_znet_vinfo_line" > /dev/kmsg
done
}
for ccw_arg in $(getargs rd.ccw -d 'rd_CCW=') $(getargs rd.znet -d 'rd_ZNET='); do
(
SAVED_IFS="$IFS"
IFS=","
# shellcheck disable=SC2086
set -- $ccw_arg
IFS="$SAVED_IFS"
type="$1"
subchannel1="$2"
subchannel2="$3"
subchannel3="$4"
echo "rd.znet ${ccw_arg} :" | znet_vinfo
if [ "$#" -lt 3 ]; then
echo "rd.znet needs at least 3 list items: type,subchannel1,subchannel2" | znet_vinfo
fi
if [ "$1" = "qeth" ]; then
if [ "$#" -lt 4 ]; then
echo "rd.znet for type qeth needs at least 4 list items: qeth,subchannel1,subchannel2,subchannel3" | znet_vinfo
fi
subchannels="$subchannel1:$subchannel2:$subchannel3"
shift 4
# shellcheck disable=SC2086
chzdev --enable --persistent $znet_base_args \
"$type" "$subchannels" "$@" 2>&1 | znet_vinfo
else
subchannels="$subchannel1:$subchannel2"
shift 3
# shellcheck disable=SC2086
chzdev --enable --persistent $znet_base_args \
"$type" "$subchannels" "$@" 2>&1 | znet_vinfo
fi
)
done
for ifname in $(getargs rd.znet_ifname); do
IFS=: read -r ifname_if ifname_subchannels _rest <<< "$ifname"
if [ -z "$ifname_if" ] || [ -z "$ifname_subchannels" ] || [ -n "$_rest" ]; then
warn "Invalid arguments for rd.znet_ifname="
else
{
ifname_subchannels="${ifname_subchannels//,/|}"
# sanitize for use in udev label: replace non-word characters by _
ifname_if_label="${ifname_if//[^[:word:]]/_}"
echo "ACTION!=\"add|change\", GOTO=\"ccw_ifname_${ifname_if_label}_end\""
echo "ATTR{type}!=\"1\", GOTO=\"ccw_ifname_${ifname_if_label}_end\""
echo "SUBSYSTEM!=\"net\", GOTO=\"ccw_ifname_${ifname_if_label}_end\""
echo "SUBSYSTEMS==\"ccwgroup\", KERNELS==\"$ifname_subchannels\", DRIVERS==\"?*\" NAME=\"$ifname_if\""
echo "LABEL=\"ccw_ifname_${ifname_if_label}_end\""
} >> /etc/udev/rules.d/81-ccw-ifname.rules
fi
done
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