1 /* $NetBSD: test-detach.c,v 1.2 2017/01/28 21:31:50 christos Exp $ */ 2 3 /*********************************************************************** 4 * Copyright (c) 2015, Cryptonector LLC 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * - Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 14 * - Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the 17 * distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 23 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 24 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 26 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 28 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 30 * OF THE POSSIBILITY OF SUCH DAMAGE. 31 * 32 **********************************************************************/ 33 34 #include <config.h> 35 36 #include <sys/types.h> 37 #include <err.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <errno.h> 41 #include <string.h> 42 #ifdef WIN32 43 #include <process.h> 44 #ifdef getpid 45 #undef getpid 46 #endif 47 #define getpid _getpid 48 #else 49 #include <unistd.h> 50 #endif 51 #include <krb5/roken.h> 52 53 int main(int argc, char **argv) 54 { 55 char *ends; 56 long n; 57 int fd = -1; 58 59 if (argc > 1) { 60 if (argc != 3) 61 errx(1, "Usage: test-detach [--daemon-child fd]"); 62 fprintf(stderr, "Child started (argv[1] = %s, argv[2] = %s)!\n", argv[1], argv[2]); 63 errno = 0; 64 n = strtol(argv[2], &ends, 10); 65 fd = n; 66 if (errno != 0) 67 err(1, "Usage: test-detach [--daemon-child fd]"); 68 if (n < 0 || ends == NULL || *ends != '\0' || n != fd) 69 errx(1, "Usage: test-detach [--daemon-child fd]"); 70 } else { 71 fprintf(stderr, "Parent started as %ld\n", (long)getpid()); 72 roken_detach_prep(argc, argv, "--daemon-child"); 73 } 74 fprintf(stderr, "Now should be the child: %ld\n", (long)getpid()); 75 roken_detach_finish(NULL, fd); 76 /* 77 * These printfs will not appear: stderr will have been replaced 78 * with /dev/null. 79 */ 80 fprintf(stderr, "Now should be the child: %ld, wrote to parent\n", (long)getpid()); 81 sleep(5); 82 fprintf(stderr, "Daemon child done\n"); 83 return 0; 84 } 85