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73f51e45a8
Converts zdev configuration into the syntax of the dracut cmdline option rd.znet. Only znet options with non-default values are emitted. The result string occurs on stdout. It represents one device-specification for the given network interface name. Example: /lib/s390-tools/zdev-to-rd.znet persistent encbdf0 qeth,0.0.bdf0,0.0.bdf1,0.0.bdf2,layer2=1 User: https://github.com/rhinstaller/anaconda/pull/5250 to generate dracut cmdline entries such as rd.znet=qeth,0.0.bdf0,0.0.bdf1,0.0.bdf2,layer2=1 Github-ID: https://github.com/ibm-s390-linux/s390-tools/pull/158 Acked-by: Vineeth Vijayan <vneethv@linux.ibm.com> Acked-by: Peter Oberparleiter <oberpar@linux.ibm.com> Signed-off-by: Steffen Maier <maier@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
50 lines
1.3 KiB
Bash
Executable File
50 lines
1.3 KiB
Bash
Executable File
#!/bin/bash
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#
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# Copyright IBM Corp. 2023
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#
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# s390-tools is free software; you can redistribute it and/or modify
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# it under the terms of the MIT license. See LICENSE for details.
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#
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# zdev-to-rd.znet
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# Converts zdev configuration into the syntax of the dracut cmdline option
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# rd.znet. Only znet options with non-default values are emitted. The
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# result string occurs on stdout. It represents one device-specification for
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# the given network interface name.
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#
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function usage() {
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echo "usage: ${0##*/} active|persistent <network interface name>" 1>&2
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exit 1
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}
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[[ $# -eq 2 ]] || usage
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[[ "$1" == active ]] || [[ "$1" == persistent ]] || usage
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_selection="--${1}"
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_ifname="$2"
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while read -r _line; do
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case "$_line" in
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\#*) ;;
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\[*)
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SAVED_IFS="$IFS"
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IFS="${IFS}:]"
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# shellcheck disable=SC2086
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set -- $_line
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shift # skip "[..." prefix
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_nettype="$1"
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shift # skip nettype
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IFS="," # comma-separated subchannel list
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_subchannels="$*"
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IFS="$SAVED_IFS"
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;;
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"online=1") ;;
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zdev:early=*) ;;
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*)
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_attrs="${_attrs},${_line}"
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;;
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esac
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done < <(chzdev --by-interface "$_ifname" "$_selection" --export - --quiet)
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printf "%s,%s%s\n" "$_nettype" "$_subchannels" "$_attrs"
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