1 /* $NetBSD: t_kevent.c,v 1.4 2012/06/02 16:52:18 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2011 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundatiom 8 * by Christos Zoulas. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 #include <sys/cdefs.h> 32 __RCSID("$NetBSD: t_kevent.c,v 1.4 2012/06/02 16:52:18 martin Exp $"); 33 34 #include <sys/types.h> 35 #include <sys/event.h> 36 37 #include <atf-c.h> 38 #include <errno.h> 39 #include <time.h> 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <string.h> 43 #include <unistd.h> 44 #include <err.h> 45 #include <sys/event.h> 46 #include <sys/time.h> 47 #include <sys/socket.h> 48 #include <sys/wait.h> 49 50 ATF_TC(kevent_zerotimer); 51 ATF_TC_HEAD(kevent_zerotimer, tc) 52 { 53 atf_tc_set_md_var(tc, "descr", "Checks that kevent with a 0 timer " 54 "does not crash the system (PR lib/45618)"); 55 } 56 57 ATF_TC_BODY(kevent_zerotimer, tc) 58 { 59 struct kevent ev; 60 int kq; 61 62 ATF_REQUIRE((kq = kqueue()) != -1); 63 EV_SET(&ev, 1, EVFILT_TIMER, EV_ADD|EV_ENABLE, 0, 1, 0); 64 ATF_REQUIRE(kevent(kq, &ev, 1, NULL, 0, NULL) != -1); 65 ATF_REQUIRE(kevent(kq, NULL, 0, &ev, 1, NULL) == 1); 66 } 67 68 ATF_TC(kqueue_desc_passing); 69 ATF_TC_HEAD(kqueue_desc_passing, tc) 70 { 71 atf_tc_set_md_var(tc, "descr", "Checks that passing a kqueue to " 72 "another process does not crash the kernel (PR 46463)"); 73 } 74 75 ATF_TC_BODY(kqueue_desc_passing, tc) 76 { 77 pid_t child; 78 int s[2], storage, status, kq; 79 struct cmsghdr *msg; 80 struct iovec iov; 81 struct msghdr m; 82 struct kevent ev; 83 84 ATF_REQUIRE((kq = kqueue()) != -1); 85 86 // atf_tc_skip("crashes kernel (PR 46463)"); 87 88 ATF_REQUIRE(socketpair(AF_LOCAL, SOCK_STREAM, 0, s) != -1); 89 msg = malloc(CMSG_SPACE(sizeof(int))); 90 m.msg_iov = &iov; 91 m.msg_iovlen = 1; 92 m.msg_name = NULL; 93 m.msg_namelen = 0; 94 m.msg_control = msg; 95 m.msg_controllen = CMSG_SPACE(sizeof(int)); 96 97 child = fork(); 98 if (child == 0) { 99 close(s[0]); 100 101 iov.iov_base = &storage; 102 iov.iov_len = sizeof(int); 103 m.msg_iov = &iov; 104 m.msg_iovlen = 1; 105 106 if (recvmsg(s[1], &m, 0) == -1) 107 err(1, "child: could not recvmsg"); 108 109 kq = *(int *)CMSG_DATA(msg); 110 printf("child (pid %d): received kq fd %d\n", getpid(), kq); 111 exit(0); 112 } 113 114 close(s[1]); 115 116 iov.iov_base = &storage; 117 iov.iov_len = sizeof(int); 118 119 msg->cmsg_level = SOL_SOCKET; 120 msg->cmsg_type = SCM_RIGHTS; 121 msg->cmsg_len = CMSG_LEN(sizeof(int)); 122 123 *(int *)CMSG_DATA(msg) = kq; 124 125 EV_SET(&ev, 1, EVFILT_TIMER, EV_ADD|EV_ENABLE, 0, 1, 0); 126 ATF_CHECK(kevent(kq, &ev, 1, NULL, 0, NULL) != -1); 127 128 printf("parent (pid %d): sending kq fd %d\n", getpid(), kq); 129 if (sendmsg(s[0], &m, 0) == -1) { 130 ATF_REQUIRE_EQ_MSG(errno, EBADF, "errno is %d", errno); 131 atf_tc_skip("PR kern/46523"); 132 } 133 134 close(kq); 135 136 waitpid(child, &status, 0); 137 ATF_CHECK(WIFEXITED(status) && WEXITSTATUS(status)==0); 138 } 139 140 ATF_TP_ADD_TCS(tp) 141 { 142 143 ATF_TP_ADD_TC(tp, kevent_zerotimer); 144 ATF_TP_ADD_TC(tp, kqueue_desc_passing); 145 146 return atf_no_error(); 147 } 148