This file is indexed.

/etc/network/if-pre-up.d/tinc is in tinc 1.0.23-2.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

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#!/bin/sh

set -e

if [ -z "$IF_TINC_NET" ]; then
	exit 0
fi

# Read options from /etc/default

. /etc/default/tinc

# Read options from /etc/network/interfaces

[ -n "$IF_TINC_CONFIG" ]          && EXTRA="$EXTRA -c $IF_TINC_CONFIG"
[ -n "$IF_TINC_DEBUG" ]           && EXTRA="$EXTRA -d$IF_TINC_DEBUG"
[ -n "$IF_TINC_MLOCK" ]           && EXTRA="$EXTRA --mlock"
[ -n "$IF_TINC_LOGFILE" ]         && EXTRA="$EXTRA --logfile=$IF_TINC_LOGFILE"
[ -n "$IF_TINC_PIDFILE" ]         && EXTRA="$EXTRA --pidfile=$IF_TINC_PIDFILE" || IF_TINC_PIDFILE=/var/run/tinc.$IF_TINC_NET.pid
[ -n "$IF_TINC_CHROOT" ]          && EXTRA="$EXTRA --chroot"
[ -n "$IF_TINC_USER" ]            && EXTRA="$EXTRA --user=$IF_TINC_USER"


# Start tinc daemon

/usr/sbin/tincd -n "$IF_TINC_NET" -o "Interface=$IFACE" $EXTRA

# Wait for it to come up properly

sleep 0.1
i=0;
while [ ! -f "$IF_TINC_PIDFILE" ] ; do
	if [ $i = '30' ] ; then
		echo 'Failed to start tinc daemon!'
		exit 1
	fi
	sleep 0.1
	i=$(($i+1))
done

exit 0