1 /* $NetBSD: h_fileactions.c,v 1.1 2012/02/13 21:03:08 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2012 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles Zhang <charles@NetBSD.org> and 9 * Martin Husemann <martin@NetBSD.org>. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <stdio.h> 34 #include <stdlib.h> 35 #include <string.h> 36 #include <unistd.h> 37 #include <errno.h> 38 #include <sys/stat.h> 39 40 #define BUFSIZE 16 41 42 /* 43 * This checks (hardcoded) the assumptions that are setup from the 44 * main test program via posix spawn file actions. 45 * Program exits with EXIT_SUCCESS or EXIT_FAILURE accordingly 46 * (and does some stderr diagnostics in case of errors). 47 */ 48 int 49 main(int argc, char **argv) 50 { 51 int res = EXIT_SUCCESS; 52 long lowfd; 53 char buf[BUFSIZE]; 54 struct stat sb0, sb1; 55 56 if (argc < 2) { 57 fprintf(stderr, "%s: Not enough arguments: %d\n", getprogname(), 58 argc); 59 return EXIT_FAILURE; 60 } 61 lowfd = strtol(argv[1], NULL, 10); 62 if (lowfd < 3) { 63 fprintf(stderr, "%s: Invalid lowfd %d (as str: %s) \n", 64 getprogname(), argc, argv[1]); 65 return EXIT_FAILURE; 66 } 67 68 strcpy(buf, "test..."); 69 /* First fd should be closed via addclose */ 70 if (read(lowfd, buf, BUFSIZE) != -1 || errno != EBADF) { 71 fprintf(stderr, "%s: first filedesc is not closed\n", 72 getprogname()); 73 res = EXIT_FAILURE; 74 } 75 /* Next file desc should be closed via closeonexec */ 76 if (read(lowfd + 1, buf, BUFSIZE) != -1 || errno != EBADF) { 77 fprintf(stderr, "%s: filedesc +1 is not closed\n", 78 getprogname()); 79 res = EXIT_FAILURE; 80 } 81 /* file desc + 2 remains open */ 82 if (write(lowfd + 2, buf, BUFSIZE) <= 0) { 83 fprintf(stderr, "%s: could not write to filedesc +2\n", 84 getprogname()); 85 res = EXIT_FAILURE; 86 } 87 /* file desc + 3 should be open (via addopen) */ 88 if (write(lowfd + 3, buf, BUFSIZE) <= 0) { 89 fprintf(stderr, "%s: could not write to filedesc +3\n", 90 getprogname()); 91 res = EXIT_FAILURE; 92 } 93 /* file desc + 4 should refer to stdout */ 94 fflush(stdout); 95 if (fstat(fileno(stdout), &sb0) != 0) { 96 fprintf(stderr, "%s: could not fstat stdout\n", 97 getprogname()); 98 res = EXIT_FAILURE; 99 } 100 if (fstat(lowfd + 4, &sb1) != 0) { 101 fprintf(stderr, "%s: could not fstat filedesc +4\n", 102 getprogname()); 103 res = EXIT_FAILURE; 104 } 105 if (write(lowfd + 4, buf, strlen(buf)) <= 0) { 106 fprintf(stderr, "%s: could not write to filedesc +4\n", 107 getprogname()); 108 res = EXIT_FAILURE; 109 } 110 if (memcmp(&sb0, &sb1, sizeof sb0) != 0) { 111 fprintf(stderr, "%s: stat results differ\n", getprogname()); 112 res = EXIT_FAILURE; 113 } 114 115 return res; 116 } 117 118