1 /* $NetBSD: t_pipe2.c,v 1.8 2012/05/16 13:54:28 jruoho 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 Foundation 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 #include <sys/cdefs.h> 39 __RCSID("$NetBSD: t_pipe2.c,v 1.8 2012/05/16 13:54:28 jruoho Exp $"); 40 41 #include <atf-c.h> 42 #include <fcntl.h> 43 #include <unistd.h> 44 #include <stdlib.h> 45 #include <errno.h> 46 #include <sys/resource.h> 47 48 static void 49 run(int flags) 50 { 51 int fd[2], i; 52 53 while ((i = open("/", O_RDONLY)) < 3) 54 ATF_REQUIRE(i != -1); 55 56 #ifdef __FreeBSD__ 57 closefrom(3); 58 #else 59 ATF_REQUIRE(fcntl(3, F_CLOSEM) != -1); 60 #endif 61 62 ATF_REQUIRE(pipe2(fd, flags) == 0); 63 64 ATF_REQUIRE(fd[0] == 3); 65 ATF_REQUIRE(fd[1] == 4); 66 67 if (flags & O_CLOEXEC) { 68 ATF_REQUIRE((fcntl(fd[0], F_GETFD) & FD_CLOEXEC) != 0); 69 ATF_REQUIRE((fcntl(fd[1], F_GETFD) & FD_CLOEXEC) != 0); 70 } else { 71 ATF_REQUIRE((fcntl(fd[0], F_GETFD) & FD_CLOEXEC) == 0); 72 ATF_REQUIRE((fcntl(fd[1], F_GETFD) & FD_CLOEXEC) == 0); 73 } 74 75 if (flags & O_NONBLOCK) { 76 ATF_REQUIRE((fcntl(fd[0], F_GETFL) & O_NONBLOCK) != 0); 77 ATF_REQUIRE((fcntl(fd[1], F_GETFL) & O_NONBLOCK) != 0); 78 } else { 79 ATF_REQUIRE((fcntl(fd[0], F_GETFL) & O_NONBLOCK) == 0); 80 ATF_REQUIRE((fcntl(fd[1], F_GETFL) & O_NONBLOCK) == 0); 81 } 82 83 #ifndef __FreeBSD__ 84 if (flags & O_NOSIGPIPE) { 85 ATF_REQUIRE(fcntl(fd[0], F_GETNOSIGPIPE) != 0); 86 ATF_REQUIRE(fcntl(fd[1], F_GETNOSIGPIPE) != 0); 87 } else { 88 ATF_REQUIRE(fcntl(fd[0], F_GETNOSIGPIPE) == 0); 89 ATF_REQUIRE(fcntl(fd[1], F_GETNOSIGPIPE) == 0); 90 } 91 #endif 92 93 ATF_REQUIRE(close(fd[0]) != -1); 94 ATF_REQUIRE(close(fd[1]) != -1); 95 } 96 97 ATF_TC(pipe2_basic); 98 ATF_TC_HEAD(pipe2_basic, tc) 99 { 100 atf_tc_set_md_var(tc, "descr", "A basic test of pipe2(2)"); 101 } 102 103 ATF_TC_BODY(pipe2_basic, tc) 104 { 105 run(0); 106 } 107 108 ATF_TC(pipe2_consume); 109 ATF_TC_HEAD(pipe2_consume, tc) 110 { 111 atf_tc_set_md_var(tc, "descr", "Test that consuming file descriptors " 112 "with pipe2(2) does not crash the system (PR kern/46457)"); 113 } 114 115 ATF_TC_BODY(pipe2_consume, tc) 116 { 117 struct rlimit rl; 118 int err, filedes[2]; 119 #ifdef __FreeBSD__ 120 int old; 121 122 closefrom(4); 123 #else 124 err = fcntl(4, F_CLOSEM); 125 ATF_REQUIRE(err == 0); 126 #endif 127 128 err = getrlimit(RLIMIT_NOFILE, &rl); 129 ATF_REQUIRE(err == 0); 130 /* 131 * The heart of this test is to run against the number of open 132 * file descriptor limit in the middle of a pipe2() call - i.e. 133 * before the call only a single descriptor may be openend. 134 */ 135 #ifdef __FreeBSD__ 136 old = rl.rlim_cur; 137 #endif 138 rl.rlim_cur = 4; 139 err = setrlimit(RLIMIT_NOFILE, &rl); 140 ATF_REQUIRE(err == 0); 141 142 err = pipe2(filedes, O_CLOEXEC); 143 ATF_REQUIRE(err == -1); 144 #ifdef __FreeBSD__ 145 rl.rlim_cur = old; 146 err = setrlimit(RLIMIT_NOFILE, &rl); 147 #endif 148 } 149 150 ATF_TC(pipe2_nonblock); 151 ATF_TC_HEAD(pipe2_nonblock, tc) 152 { 153 atf_tc_set_md_var(tc, "descr", "A non-blocking test of pipe2(2)"); 154 } 155 156 ATF_TC_BODY(pipe2_nonblock, tc) 157 { 158 run(O_NONBLOCK); 159 } 160 161 ATF_TC(pipe2_cloexec); 162 ATF_TC_HEAD(pipe2_cloexec, tc) 163 { 164 atf_tc_set_md_var(tc, "descr", "A close-on-exec test of pipe2(2)"); 165 } 166 167 ATF_TC_BODY(pipe2_cloexec, tc) 168 { 169 run(O_CLOEXEC); 170 } 171 172 #ifdef __NetBSD__ 173 ATF_TC(pipe2_nosigpipe); 174 ATF_TC_HEAD(pipe2_nosigpipe, tc) 175 { 176 atf_tc_set_md_var(tc, "descr", "A no sigpipe test of pipe2(2)"); 177 } 178 179 ATF_TC_BODY(pipe2_nosigpipe, tc) 180 { 181 run(O_NOSIGPIPE); 182 } 183 #endif 184 185 ATF_TC(pipe2_einval); 186 ATF_TC_HEAD(pipe2_einval, tc) 187 { 188 atf_tc_set_md_var(tc, "descr", "A error check of pipe2(2)"); 189 } 190 191 ATF_TC_BODY(pipe2_einval, tc) 192 { 193 int fd[2]; 194 ATF_REQUIRE_ERRNO(EINVAL, pipe2(fd, O_ASYNC) == -1); 195 } 196 197 ATF_TP_ADD_TCS(tp) 198 { 199 200 ATF_TP_ADD_TC(tp, pipe2_basic); 201 ATF_TP_ADD_TC(tp, pipe2_consume); 202 ATF_TP_ADD_TC(tp, pipe2_nonblock); 203 ATF_TP_ADD_TC(tp, pipe2_cloexec); 204 #ifdef __NetBSD__ 205 ATF_TP_ADD_TC(tp, pipe2_nosigpipe); 206 #endif 207 ATF_TP_ADD_TC(tp, pipe2_einval); 208 209 return atf_no_error(); 210 } 211