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0ded476534
Add a new service that runs a small helper script that applies a consistent, deterministic naming pattern to all interfaces, based on their mac address. A configuration file with wild card pattern matching can be used for determining names. By default, this is disabled. Also, this script is Linux specific. Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
66 lines
1.6 KiB
Bash
Executable file
66 lines
1.6 KiB
Bash
Executable file
#!/bin/sh
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#
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# SPDX-License-Identifier: GPL-3.0-or-later
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#
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# Copyright (C) 2018 - David Oberhollenzer
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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#
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NAMERULES="@ETCPATH@/netcfg/ifrename"
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TMPPATH="/tmp/ifrename"
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[ -f "$NAMERULES" ] || exit 0
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mkdir -p "$TMPPATH"
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for IFPATH in /sys/class/net/*; do
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[ "$IFPATH" == "/sys/class/net/lo" ] && continue
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IF=`basename $IFPATH`
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MAC=`cat $IFPATH/address`
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grep "^[^,]\+,[^,]\+,[a-zA-Z0-9]\+$" $NAMERULES | while read LINE;
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do
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NAMECMP=$(echo $LINE | cut -d',' -f1)
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ADDRCMP=$(echo $LINE | cut -d',' -f2)
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RULE=$(echo $LINE | cut -d',' -f3)
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case $IF in ($NAMECMP) ;; *) continue;; esac
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case $MAC in ($ADDRCMP) ;; *) continue;; esac
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echo "$MAC,$IF" >> "$TMPPATH/$RULE"
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break
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done
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done
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for FNAME in $TMPPATH/*; do
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[ ! -f "$FNAME" ] && break
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IDX=0
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PREFIX=$(basename $FNAME)
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sort -t',' -k1 -u $FNAME | while read LINE;
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do
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OLDNAME=$(echo $LINE | cut -d',' -f2)
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NEWNAME="$PREFIX$IDX"
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IDX=`expr $IDX + 1`
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ip link set "$OLDNAME" name "$NEWNAME"
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done
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rm "$FNAME"
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done
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rmdir "$TMPPATH"
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