170 lines
4.4 KiB
C
170 lines
4.4 KiB
C
/* $NetBSD: t_forward.c,v 1.10 2017/01/13 21:30:42 christos Exp $ */
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/*-
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* Copyright (c) 2010 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
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* CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: t_forward.c,v 1.10 2017/01/13 21:30:42 christos Exp $");
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/time.h>
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#include <sys/sysctl.h>
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#include <sys/wait.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/ip_icmp.h>
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#include <netinet/icmp_var.h>
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#include <net/route.h>
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#include <rump/rump.h>
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#include <rump/rump_syscalls.h>
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#include <atf-c.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "h_macros.h"
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#include "../config/netconfig.c"
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/*
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* Since our maxttl is in our private namespace, we don't need raw packet
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* construction like traceroute(8) -- we can just use the global maxttl.
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*/
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static void
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sendttl(void)
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{
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struct sockaddr_in sin;
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char payload[1024];
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char ifname[IFNAMSIZ];
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int mib[4] = { CTL_NET, PF_INET, IPPROTO_IP, IPCTL_DEFTTL };
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int nv;
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int s;
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netcfg_rump_makeshmif("bus1", ifname);
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netcfg_rump_if(ifname, "1.0.0.1", "255.255.255.0");
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netcfg_rump_route("0.0.0.0", "0.0.0.0", "1.0.0.2"); /* default router */
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/* set global ttl to 1 */
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nv = 1;
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if (rump_sys___sysctl(mib, 4, NULL, NULL, &nv, sizeof(nv)) == -1)
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atf_tc_fail_errno("set ttl");
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s = rump_sys_socket(PF_INET, SOCK_DGRAM, 0);
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if (s == -1)
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atf_tc_fail_errno("create send socket");
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memset(&sin, 0, sizeof(sin));
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sin.sin_len = sizeof(sin);
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sin.sin_family = AF_INET;
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sin.sin_port = htons(33434);
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sin.sin_addr.s_addr = inet_addr("9.9.9.9");
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/* send udp datagram with ttl == 1 */
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if (rump_sys_sendto(s, payload, sizeof(payload), 0,
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(struct sockaddr *)&sin, sizeof(sin)) == -1)
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atf_tc_fail_errno("sendto");
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}
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static void
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router(void)
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{
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int mib[4] = { CTL_NET, PF_INET, IPPROTO_ICMP,
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ICMPCTL_RETURNDATABYTES };
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char ifname[IFNAMSIZ];
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int nv;
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/* set returndatabytes to 200 */
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nv = 200;
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if (rump_sys___sysctl(mib, 4, NULL, NULL, &nv, sizeof(nv)) == -1)
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atf_tc_fail_errno("sysctl returndatabytes");
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netcfg_rump_makeshmif("bus1", ifname);
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netcfg_rump_if(ifname, "1.0.0.2", "255.255.255.0");
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/*
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* Wait for parent to send us the data and for us to have
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* a chance to process it.
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*/
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sleep(1);
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exit(0);
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}
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ATF_TC(returndatabytes);
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ATF_TC_HEAD(returndatabytes, tc)
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{
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atf_tc_set_md_var(tc, "descr", "icmp.returndatabytes with certain "
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"packets can cause kernel panic (PR kern/43548)");
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atf_tc_set_md_var(tc, "timeout", "20"); /* just in case */
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}
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ATF_TC_BODY(returndatabytes, tc)
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{
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pid_t cpid;
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int status;
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cpid = fork();
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rump_init();
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switch (cpid) {
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case -1:
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atf_tc_fail_errno("fork failed");
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case 0:
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router();
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break;
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default:
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sendttl();
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if (wait(&status) == -1)
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atf_tc_fail_errno("wait");
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if (WIFEXITED(status)) {
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if (WEXITSTATUS(status))
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atf_tc_fail("child exited with status %d",
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WEXITSTATUS(status));
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} else {
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atf_tc_fail("child died");
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}
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}
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, returndatabytes);
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return atf_no_error();
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}
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