1 /* $NetBSD: h_fileactions.c,v 1.2 2021/11/07 15:46:20 christos 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 #include <sys/cdefs.h> 33 __RCSID("$NetBSD: h_fileactions.c,v 1.2 2021/11/07 15:46:20 christos Exp $"); 34 35 #include <stdio.h> 36 #include <stdlib.h> 37 #include <string.h> 38 #include <unistd.h> 39 #include <errno.h> 40 #include <sys/stat.h> 41 42 #define BUFSIZE 16 43 44 /* 45 * This checks (hardcoded) the assumptions that are setup from the 46 * main test program via posix spawn file actions. 47 * Program exits with EXIT_SUCCESS or EXIT_FAILURE accordingly 48 * (and does some stderr diagnostics in case of errors). 49 */ 50 int 51 main(int argc, char **argv) 52 { 53 int res = EXIT_SUCCESS; 54 char buf[BUFSIZE]; 55 struct stat sb0, sb1; 56 57 strcpy(buf, "test..."); 58 /* file desc 3 should be closed via addclose */ 59 if (read(3, buf, BUFSIZE) != -1 || errno != EBADF) { 60 fprintf(stderr, "%s: filedesc 3 is not closed\n", 61 getprogname()); 62 res = EXIT_FAILURE; 63 } 64 /* file desc 4 should be closed via closeonexec */ 65 if (read(4, buf, BUFSIZE) != -1 || errno != EBADF) { 66 fprintf(stderr, "%s: filedesc 4 is not closed\n", 67 getprogname()); 68 res = EXIT_FAILURE; 69 } 70 /* file desc 5 remains open */ 71 if (write(5, buf, BUFSIZE) <= 0) { 72 fprintf(stderr, "%s: could not write to filedesc 5\n", 73 getprogname()); 74 res = EXIT_FAILURE; 75 } 76 /* file desc 6 should be open (via addopen) */ 77 if (write(6, buf, BUFSIZE) <= 0) { 78 fprintf(stderr, "%s: could not write to filedesc 6\n", 79 getprogname()); 80 res = EXIT_FAILURE; 81 } 82 /* file desc 7 should refer to stdout */ 83 fflush(stdout); 84 if (fstat(fileno(stdout), &sb0) != 0) { 85 fprintf(stderr, "%s: could not fstat stdout\n", 86 getprogname()); 87 res = EXIT_FAILURE; 88 } 89 if (fstat(7, &sb1) != 0) { 90 fprintf(stderr, "%s: could not fstat filedesc 7\n", 91 getprogname()); 92 res = EXIT_FAILURE; 93 } 94 if (write(7, buf, strlen(buf)) <= 0) { 95 fprintf(stderr, "%s: could not write to filedesc 7\n", 96 getprogname()); 97 res = EXIT_FAILURE; 98 } 99 if (memcmp(&sb0, &sb1, sizeof sb0) != 0) { 100 fprintf(stderr, "%s: stat results differ\n", getprogname()); 101 res = EXIT_FAILURE; 102 } 103 104 return res; 105 } 106 107