1 /* 2 * Copyright (c) 2013-2016 Dmitry V. Levin <ldv (at) altlinux.org> 3 * Copyright (c) 2013-2018 The strace developers. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include "tests.h" 30 #include <assert.h> 31 #include <stddef.h> 32 #include <string.h> 33 #include <signal.h> 34 #include <unistd.h> 35 #include <sys/wait.h> 36 #include <sys/socket.h> 37 #include <sys/un.h> 38 39 static void 40 handler(int sig) 41 { 42 assert(close(1) == 0); 43 _exit(0); 44 } 45 46 int 47 main(int ac, const char **av) 48 { 49 struct sockaddr_un addr = { 50 .sun_family = AF_UNIX, 51 }; 52 53 assert(ac == 2); 54 socklen_t len = strlen(av[1]); 55 assert(len > 0 && len <= sizeof(addr.sun_path)); 56 57 if (++len > sizeof(addr.sun_path)) 58 len = sizeof(addr.sun_path); 59 60 memcpy(addr.sun_path, av[1], len); 61 len += offsetof(struct sockaddr_un, sun_path); 62 63 unlink(av[1]); 64 close(0); 65 close(1); 66 67 if (socket(AF_UNIX, SOCK_STREAM, 0)) 68 perror_msg_and_skip("socket"); 69 if (bind(0, (struct sockaddr *) &addr, len)) 70 perror_msg_and_skip("bind"); 71 if (listen(0, 5)) 72 perror_msg_and_skip("listen"); 73 74 memset(&addr, 0, sizeof(addr)); 75 assert(getsockname(0, (struct sockaddr *) &addr, &len) == 0); 76 if (len > sizeof(addr)) 77 len = sizeof(addr); 78 79 pid_t pid = fork(); 80 if (pid < 0) 81 perror_msg_and_fail("fork"); 82 83 if (pid) { 84 assert(accept(0, (struct sockaddr *) &addr, &len) == 1); 85 assert(close(0) == 0); 86 assert(kill(pid, SIGUSR1) == 0); 87 int status; 88 assert(waitpid(pid, &status, 0) == pid); 89 assert(status == 0); 90 assert(close(1) == 0); 91 } else { 92 sigset_t set; 93 sigemptyset(&set); 94 sigaddset(&set, SIGUSR1); 95 96 assert(sigprocmask(SIG_BLOCK, &set, NULL) == 0); 97 assert(signal(SIGUSR1, handler) != SIG_ERR); 98 assert(socket(AF_UNIX, SOCK_STREAM, 0) == 1); 99 assert(close(0) == 0); 100 assert(connect(1, (struct sockaddr *) &addr, len) == 0); 101 assert(sigprocmask(SIG_UNBLOCK, &set, NULL) == 0); 102 assert(pause() == 99); 103 return 1; 104 } 105 106 unlink(av[1]); 107 return 0; 108 } 109
