/* $NetBSD: t_forward.c,v 1.8 2012/03/18 09:46:50 jruoho Exp $ */ /*- * Copyright (c) 2010 The NetBSD Foundation, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * 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. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #ifndef lint __RCSID("$NetBSD: t_forward.c,v 1.8 2012/03/18 09:46:50 jruoho Exp $"); #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "../../h_macros.h" #include "../config/netconfig.c" /* * Since our maxttl is in our private namespace, we don't need raw packet * construction like traceroute(8) -- we can just use the global maxttl. */ static void sendttl(void) { struct sockaddr_in sin; char payload[1024]; char ifname[IFNAMSIZ]; int mib[4] = { CTL_NET, PF_INET, IPPROTO_IP, IPCTL_DEFTTL }; int nv; int s; netcfg_rump_makeshmif("bus1", ifname); netcfg_rump_if(ifname, "1.0.0.1", "255.255.255.0"); netcfg_rump_route("0.0.0.0", "0.0.0.0", "1.0.0.2"); /* default router */ /* set global ttl to 1 */ nv = 1; if (rump_sys___sysctl(mib, 4, NULL, NULL, &nv, sizeof(nv)) == -1) atf_tc_fail_errno("set ttl"); s = rump_sys_socket(PF_INET, SOCK_DGRAM, 0); if (s == -1) atf_tc_fail_errno("create send socket"); memset(&sin, 0, sizeof(sin)); sin.sin_len = sizeof(sin); sin.sin_family = AF_INET; sin.sin_port = htons(33434); sin.sin_addr.s_addr = inet_addr("9.9.9.9"); /* send udp datagram with ttl == 1 */ if (rump_sys_sendto(s, payload, sizeof(payload), 0, (struct sockaddr *)&sin, sizeof(sin)) == -1) atf_tc_fail_errno("sendto"); } static void router(void) { int mib[4] = { CTL_NET, PF_INET, IPPROTO_ICMP, ICMPCTL_RETURNDATABYTES }; char ifname[IFNAMSIZ]; int nv; /* set returndatabytes to 200 */ nv = 200; if (rump_sys___sysctl(mib, 4, NULL, NULL, &nv, sizeof(nv)) == -1) atf_tc_fail_errno("sysctl returndatabytes"); netcfg_rump_makeshmif("bus1", ifname); netcfg_rump_if(ifname, "1.0.0.2", "255.255.255.0"); /* * Wait for parent to send us the data and for us to have * a chance to process it. */ sleep(1); exit(0); } ATF_TC(returndatabytes); ATF_TC_HEAD(returndatabytes, tc) { atf_tc_set_md_var(tc, "descr", "icmp.returndatabytes with certain " "packets can cause kernel panic (PR kern/43548)"); atf_tc_set_md_var(tc, "timeout", "4"); /* just in case */ } ATF_TC_BODY(returndatabytes, tc) { pid_t cpid; int status; cpid = fork(); rump_init(); switch (cpid) { case -1: atf_tc_fail_errno("fork failed"); case 0: router(); break; default: sendttl(); if (wait(&status) == -1) atf_tc_fail_errno("wait"); if (WIFEXITED(status)) { if (WEXITSTATUS(status)) atf_tc_fail("child exited with status %d", WEXITSTATUS(status)); } else { atf_tc_fail("child died"); } } } ATF_TP_ADD_TCS(tp) { ATF_TP_ADD_TC(tp, returndatabytes); return atf_no_error(); }