1 // SPDX-License-Identifier: CDDL-1.0 2 /* 3 * CDDL HEADER START 4 * 5 * The contents of this file are subject to the terms of the 6 * Common Development and Distribution License (the "License"). 7 * You may not use this file except in compliance with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or https://opensource.org/licenses/CDDL-1.0. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 23 /* 24 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 */ 27 28 #include "file_common.h" 29 30 static unsigned char bigbuffer[BIGBUFFERSIZE]; 31 32 /* 33 * Given a filename, check that the file consists entirely 34 * of a particular pattern. If the pattern is not specified a 35 * default will be used. For default values see file_common.h 36 */ 37 int 38 main(int argc, char **argv) 39 { 40 int bigfd; 41 long i, n; 42 unsigned char fillchar = DATA; 43 int bigbuffersize = BIGBUFFERSIZE; 44 45 /* 46 * Validate arguments 47 */ 48 if (argc < 2) { 49 (void) printf("Usage: %s filename [pattern]\n", 50 argv[0]); 51 exit(1); 52 } 53 54 if (argv[2]) { 55 fillchar = atoi(argv[2]); 56 } 57 58 /* 59 * Read the file contents and check every character 60 * against the supplied pattern. Abort if the 61 * pattern check fails. 62 */ 63 if ((bigfd = open(argv[1], O_RDONLY)) == -1) { 64 (void) printf("open %s failed %d\n", argv[1], errno); 65 exit(1); 66 } 67 68 do { 69 if ((n = read(bigfd, &bigbuffer, bigbuffersize)) == -1) { 70 (void) printf("read failed (%ld), %d\n", n, errno); 71 exit(errno); 72 } 73 74 for (i = 0; i < n; i++) { 75 if (bigbuffer[i] != fillchar) { 76 (void) printf("error %s: 0x%x != 0x%x)\n", 77 argv[1], bigbuffer[i], fillchar); 78 exit(1); 79 } 80 } 81 } while (n == bigbuffersize); 82 83 return (0); 84 } 85