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