This file is indexed.

/usr/lib/dracut/modules.d/90crypt/probe-keydev.sh is in dracut 020-2.

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
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh

. /lib/dracut-crypt-lib.sh


real_keydev="$1"; keypath="$2"; luksdev="$3"

[ -z "$real_keydev" -o -z "$keypath" ] && die 'probe-keydev: wrong usage!'
[ -z "$luksdev" ] && luksdev='*'

info "Probing $real_keydev for $keypath..."
test_dev -f "$real_keydev" "$keypath" || exit 1

info "Found $keypath on $real_keydev"
echo "$luksdev:$real_keydev:$keypath" >> /tmp/luks.keys