t_kauth_pr_47598.c revision 1.2.4.2
1 1.2.4.2 tls /*- 2 1.2.4.2 tls * Copyright (c) 2013 The NetBSD Foundation, Inc. 3 1.2.4.2 tls * All rights reserved. 4 1.2.4.2 tls * 5 1.2.4.2 tls * Redistribution and use in source and binary forms, with or without 6 1.2.4.2 tls * modification, are permitted provided that the following conditions 7 1.2.4.2 tls * are met: 8 1.2.4.2 tls * 1. Redistributions of source code must retain the above copyright 9 1.2.4.2 tls * notice, this list of conditions and the following disclaimer. 10 1.2.4.2 tls * 2. Redistributions in binary form must reproduce the above copyright 11 1.2.4.2 tls * notice, this list of conditions and the following disclaimer in the 12 1.2.4.2 tls * documentation and/or other materials provided with the distribution. 13 1.2.4.2 tls * 14 1.2.4.2 tls * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 15 1.2.4.2 tls * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 16 1.2.4.2 tls * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 1.2.4.2 tls * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 18 1.2.4.2 tls * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 19 1.2.4.2 tls * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 20 1.2.4.2 tls * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 21 1.2.4.2 tls * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 22 1.2.4.2 tls * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 23 1.2.4.2 tls * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 24 1.2.4.2 tls * POSSIBILITY OF SUCH DAMAGE. 25 1.2.4.2 tls */ 26 1.2.4.2 tls 27 1.2.4.2 tls #include <sys/cdefs.h> 28 1.2.4.2 tls __COPYRIGHT("@(#) Copyright (c) 2013\ 29 1.2.4.2 tls The NetBSD Foundation, inc. All rights reserved."); 30 1.2.4.2 tls __RCSID("$NetBSD: t_kauth_pr_47598.c,v 1.2.4.2 2013/06/23 06:28:56 tls Exp $"); 31 1.2.4.2 tls 32 1.2.4.2 tls #include <errno.h> 33 1.2.4.2 tls #include <unistd.h> 34 1.2.4.2 tls #include <stdio.h> 35 1.2.4.2 tls #include <stdlib.h> 36 1.2.4.2 tls #include <sys/sysctl.h> 37 1.2.4.2 tls #include <sys/socket.h> 38 1.2.4.2 tls #include <netinet/in.h> 39 1.2.4.2 tls #include <arpa/inet.h> 40 1.2.4.2 tls #include <atf-c.h> 41 1.2.4.2 tls 42 1.2.4.2 tls /* 43 1.2.4.2 tls * PR kern/47598: if security.models.extensions.curtain = 1 we crash when 44 1.2.4.2 tls * doing a netstat while an embryonic (not yet fully accepted) connection 45 1.2.4.2 tls * exists. 46 1.2.4.2 tls * This has been fixed with rev. 1.5 of 47 1.2.4.2 tls * src/sys/secmodel/extensions/secmodel_extensions.c. 48 1.2.4.2 tls */ 49 1.2.4.2 tls 50 1.2.4.2 tls 51 1.2.4.2 tls ATF_TC(kauth_curtain); 52 1.2.4.2 tls ATF_TC_HEAD(kauth_curtain, tc) 53 1.2.4.2 tls { 54 1.2.4.2 tls atf_tc_set_md_var(tc, "require.user", "root"); 55 1.2.4.2 tls atf_tc_set_md_var(tc, "require.progs", "netstat"); 56 1.2.4.2 tls atf_tc_set_md_var(tc, "descr", 57 1.2.4.2 tls "Checks for kernel crash with curtain active (PR kern/47598)"); 58 1.2.4.2 tls } 59 1.2.4.2 tls 60 1.2.4.2 tls ATF_TC_BODY(kauth_curtain, tc) 61 1.2.4.2 tls { 62 1.2.4.2 tls static const char curtain_name[] = "security.models.bsd44.curtain"; 63 1.2.4.2 tls 64 1.2.4.2 tls int old_curtain, new_curtain = 1, s, s2, err; 65 1.2.4.2 tls size_t old_curtain_len = sizeof(old_curtain); 66 1.2.4.2 tls socklen_t slen; 67 1.2.4.2 tls struct sockaddr_in sa; 68 1.2.4.2 tls 69 1.2.4.2 tls /* 70 1.2.4.2 tls * save old value of "curtain" and enable it 71 1.2.4.2 tls */ 72 1.2.4.2 tls if (sysctlbyname(curtain_name, &old_curtain, &old_curtain_len, 73 1.2.4.2 tls &new_curtain, sizeof(new_curtain)) != 0) 74 1.2.4.2 tls atf_tc_fail("failed to enable %s", curtain_name); 75 1.2.4.2 tls 76 1.2.4.2 tls /* 77 1.2.4.2 tls * create a socket and bind it to some arbitray free port 78 1.2.4.2 tls */ 79 1.2.4.2 tls s = socket(PF_INET, SOCK_STREAM|SOCK_NONBLOCK, 0); 80 1.2.4.2 tls ATF_REQUIRE(s != -1); 81 1.2.4.2 tls memset(&sa, 0, sizeof(sa)); 82 1.2.4.2 tls sa.sin_family = AF_INET; 83 1.2.4.2 tls sa.sin_len = sizeof(sa); 84 1.2.4.2 tls sa.sin_addr.s_addr = inet_addr("127.0.0.1"); 85 1.2.4.2 tls ATF_REQUIRE(bind(s, (struct sockaddr *)&sa, sizeof(sa))==0); 86 1.2.4.2 tls ATF_REQUIRE(listen(s, 16)==0); 87 1.2.4.2 tls 88 1.2.4.2 tls /* 89 1.2.4.2 tls * extract address and open a connection to the port 90 1.2.4.2 tls */ 91 1.2.4.2 tls slen = sizeof(sa); 92 1.2.4.2 tls ATF_REQUIRE(getsockname(s, (struct sockaddr *)&sa, &slen)==0); 93 1.2.4.2 tls s2 = socket(PF_INET, SOCK_STREAM|SOCK_NONBLOCK, 0); 94 1.2.4.2 tls ATF_REQUIRE(s2 != -1); 95 1.2.4.2 tls printf("port is %d\n", ntohs(sa.sin_port)); 96 1.2.4.2 tls err = connect(s2, (struct sockaddr *)&sa, sizeof(sa)); 97 1.2.4.2 tls ATF_REQUIRE_MSG(err == -1 && errno == EINPROGRESS, 98 1.2.4.2 tls "conect returned %d with errno %d", err, errno); 99 1.2.4.2 tls fflush(stdout); 100 1.2.4.2 tls fflush(stderr); 101 1.2.4.2 tls 102 1.2.4.2 tls /* 103 1.2.4.2 tls * we now have a pending, not yet accepted connection - run netstat 104 1.2.4.2 tls */ 105 1.2.4.2 tls system("netstat -aA"); 106 1.2.4.2 tls 107 1.2.4.2 tls /* 108 1.2.4.2 tls * cleanup 109 1.2.4.2 tls */ 110 1.2.4.2 tls close(s2); 111 1.2.4.2 tls close(s); 112 1.2.4.2 tls 113 1.2.4.2 tls /* 114 1.2.4.2 tls * restore old value of curtain 115 1.2.4.2 tls */ 116 1.2.4.2 tls if (sysctlbyname(curtain_name, NULL, 0, 117 1.2.4.2 tls &old_curtain, sizeof(old_curtain)) != 0) 118 1.2.4.2 tls atf_tc_fail("failed to restore %s", curtain_name); 119 1.2.4.2 tls } 120 1.2.4.2 tls 121 1.2.4.2 tls ATF_TP_ADD_TCS(tp) 122 1.2.4.2 tls { 123 1.2.4.2 tls ATF_TP_ADD_TC(tp, kauth_curtain); 124 1.2.4.2 tls 125 1.2.4.2 tls return atf_no_error(); 126 1.2.4.2 tls } 127 1.2.4.2 tls 128 1.2.4.2 tls 129
Indexes created Thu Oct 09 07:10:06 GMT 2025