#!/bin/sh
# Copyright 2021 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# Write the contents of the host files inside the DNS container as a
# diagnostic step.

# Die prints lines to stderr and then exits abnormally.
die() {
        printf "%s\n" "$@" 1>&2
        exit 1
}

# Check for the existence of the tools we depend on up front.
type docker 1>/dev/null 2>/dev/null || die 'no docker tool'

# Run a harmless command on the dns container to check for its presence
docker exec -it dns /bin/date || die 'dns container failed to run date command'

# Print diagnostic information about the hosts files inside the container
printf "%s\n" "/etc/hosts in dns container"
docker exec -it dns /bin/cat /etc/hosts
printf "%s\n"
printf "%s\n" "/etc/dut_hosts/hosts in dns container"
docker exec -it dns /bin/cat /etc/dut_hosts/hosts
exit 0