1 /* 2 * Copyright (c) 2013-2016 Dmitry V. Levin <ldv (at) altlinux.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include "tests.h" 29 #include <assert.h> 30 #include <stddef.h> 31 #include <string.h> 32 #include <signal.h> 33 #include <unistd.h> 34 #include <sys/wait.h> 35 #include <sys/socket.h> 36 #include <sys/un.h> 37 38 static void 39 handler(int sig) 40 { 41 assert(close(1) == 0); 42 _exit(0); 43 } 44 45 int 46 main(int ac, const char **av) 47 { 48 struct sockaddr_un addr = { 49 .sun_family = AF_UNIX, 50 }; 51 socklen_t len; 52 53 assert(ac == 2); 54 assert(strlen(av[1]) > 0); 55 56 strncpy(addr.sun_path, av[1], sizeof(addr.sun_path)); 57 len = offsetof(struct sockaddr_un, sun_path) + strlen(av[1]) + 1; 58 if (len > sizeof(addr)) 59 len = sizeof(addr); 60 61 unlink(av[1]); 62 close(0); 63 close(1); 64 65 if (socket(AF_UNIX, SOCK_STREAM, 0)) 66 perror_msg_and_skip("socket"); 67 if (bind(0, (struct sockaddr *) &addr, len)) 68 perror_msg_and_skip("bind"); 69 if (listen(0, 5)) 70 perror_msg_and_skip("listen"); 71 72 memset(&addr, 0, sizeof addr); 73 assert(getsockname(0, (struct sockaddr *) &addr, &len) == 0); 74 if (len > sizeof(addr)) 75 len = sizeof(addr); 76 77 pid_t pid = fork(); 78 if (pid < 0) 79 perror_msg_and_fail("fork"); 80 81 if (pid) { 82 assert(accept(0, (struct sockaddr *) &addr, &len) == 1); 83 assert(close(0) == 0); 84 assert(kill(pid, SIGUSR1) == 0); 85 int status; 86 assert(waitpid(pid, &status, 0) == pid); 87 assert(status == 0); 88 assert(close(1) == 0); 89 } else { 90 sigset_t set; 91 sigemptyset(&set); 92 sigaddset(&set, SIGUSR1); 93 94 assert(sigprocmask(SIG_BLOCK, &set, NULL) == 0); 95 assert(signal(SIGUSR1, handler) != SIG_ERR); 96 assert(socket(AF_UNIX, SOCK_STREAM, 0) == 1); 97 assert(close(0) == 0); 98 assert(connect(1, (struct sockaddr *) &addr, len) == 0); 99 assert(sigprocmask(SIG_UNBLOCK, &set, NULL) == 0); 100 assert(pause() == 99); 101 return 1; 102 } 103 104 unlink(av[1]); 105 return 0; 106 } 107
