xref: /src/tests/sbin/ifconfig/t_tap.sh

# $NetBSD: t_tap.sh,v 1.5 2020/06/25 18:30:42 jruoho Exp $
#
# Copyright (c) 2020 The NetBSD Foundation, Inc.
# All rights reserved.
#
# This code is derived from software contributed to The NetBSD Foundation
# by Jukka Ruohonen.
#
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# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
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taps="/tmp/taps"

atf_test_case manytaps cleanup
manytaps_head() {
	atf_set "require.user" "root"
	atf_set "descr" "Test creating many, many tap(4)'s (PR kern/55417)"
}

manytaps_body() {

	atf_skip "The test causes a panic (PR kern/55417)"
	seq 65535 65000 > $taps # Try to avoid stalling automated runs.

	while read tap; do

		ifconfig "tap$tap"

		if [ $? -eq 0 ]; then
			echo "Skipping existing tap$tap"
			continue
		fi

		ifconfig "tap$tap" create
		echo "Created tap$tap"

	done < $taps
}

manytaps_cleanup() {

	if [ -f $taps ]; then

		while read tap; do

			ifconfig "tap$tap"

			if [ $? -eq 0 ]; then
				ifconfig "tap$tap" destroy
				echo "Destroyed tap$tap"
			fi

		done < $taps

		rm $taps
	fi
}

atf_test_case overflow cleanup
overflow_head() {
	atf_set "require.user" "root"
	atf_set "descr" "Test creating a tap(4) with a " \
		"negative device number (PR kern/53546)"
}

overflow_body() {
	atf_skip "The test causes a panic (PR kern/53546)"
	ifconfig tap99999 create
}

overflow_cleanup() {

	ifconfig tap99999

	if [ $? -eq 0 ]; then
		ifconfig tap99999 destroy
	fi
}

atf_init_test_cases() {
	atf_add_test_case manytaps
	atf_add_test_case overflow
}