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      1 # $NetBSD: t_tap.sh,v 1.5 2020/06/25 18:30:42 jruoho Exp $
      2 #
      3 # Copyright (c) 2020 The NetBSD Foundation, Inc.
      4 # All rights reserved.
      5 #
      6 # This code is derived from software contributed to The NetBSD Foundation
      7 # by Jukka Ruohonen.
      8 #
      9 # Redistribution and use in source and binary forms, with or without
     10 # modification, are permitted provided that the following conditions
     11 # are met:
     12 # 1. Redistributions of source code must retain the above copyright
     13 #    notice, this list of conditions and the following disclaimer.
     14 # 2. Redistributions in binary form must reproduce the above copyright
     15 #    notice, this list of conditions and the following disclaimer in the
     16 #    documentation and/or other materials provided with the distribution.
     17 #
     18 # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     19 # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     20 # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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     25 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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     27 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     28 # POSSIBILITY OF SUCH DAMAGE.
     29 #
     30 taps="/tmp/taps"
     31 
     32 atf_test_case manytaps cleanup
     33 manytaps_head() {
     34 	atf_set "require.user" "root"
     35 	atf_set "descr" "Test creating many, many tap(4)'s (PR kern/55417)"
     36 }
     37 
     38 manytaps_body() {
     39 
     40 	atf_skip "The test causes a panic (PR kern/55417)"
     41 	seq 65535 65000 > $taps # Try to avoid stalling automated runs.
     42 
     43 	while read tap; do
     44 
     45 		ifconfig "tap$tap"
     46 
     47 		if [ $? -eq 0 ]; then
     48 			echo "Skipping existing tap$tap"
     49 			continue
     50 		fi
     51 
     52 		ifconfig "tap$tap" create
     53 		echo "Created tap$tap"
     54 
     55 	done < $taps
     56 }
     57 
     58 manytaps_cleanup() {
     59 
     60 	if [ -f $taps ]; then
     61 
     62 		while read tap; do
     63 
     64 			ifconfig "tap$tap"
     65 
     66 			if [ $? -eq 0 ]; then
     67 				ifconfig "tap$tap" destroy
     68 				echo "Destroyed tap$tap"
     69 			fi
     70 
     71 		done < $taps
     72 
     73 		rm $taps
     74 	fi
     75 }
     76 
     77 atf_test_case overflow cleanup
     78 overflow_head() {
     79 	atf_set "require.user" "root"
     80 	atf_set "descr" "Test creating a tap(4) with a " \
     81 		"negative device number (PR kern/53546)"
     82 }
     83 
     84 overflow_body() {
     85 	atf_skip "The test causes a panic (PR kern/53546)"
     86 	ifconfig tap99999 create
     87 }
     88 
     89 overflow_cleanup() {
     90 
     91 	ifconfig tap99999
     92 
     93 	if [ $? -eq 0 ]; then
     94 		ifconfig tap99999 destroy
     95 	fi
     96 }
     97 
     98 atf_init_test_cases() {
     99 	atf_add_test_case manytaps
    100 	atf_add_test_case overflow
    101 }
    102