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 http://www.opensolaris.org/os/licensing. 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 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 uint8_t fillchar = DATA; 43 int bigbuffersize = BIGBUFFERSIZE; 44 int64_t read_count = 0; 45 46 /* 47 * Validate arguments 48 */ 49 if (argc < 2) { 50 (void) printf("Usage: %s filename [pattern]\n", 51 argv[0]); 52 exit(1); 53 } 54 55 if (argv[2]) { 56 fillchar = atoi(argv[2]); 57 } 58 59 /* 60 * Read the file contents and check every character 61 * against the supplied pattern. Abort if the 62 * pattern check fails. 63 */ 64 if ((bigfd = open(argv[1], O_RDONLY)) == -1) { 65 (void) printf("open %s failed %d\n", argv[1], errno); 66 exit(1); 67 } 68 69 do { 70 if ((n = read(bigfd, &bigbuffer, bigbuffersize)) == -1) { 71 (void) printf("read failed (%ld), %d\n", n, errno); 72 exit(errno); 73 } 74 75 for (i = 0; i < n; i++) { 76 if (bigbuffer[i] != fillchar) { 77 (void) printf("error %s: 0x%x != 0x%x)\n", 78 argv[1], bigbuffer[i], fillchar); 79 exit(1); 80 } 81 } 82 83 read_count += n; 84 } while (n == bigbuffersize); 85 86 return (0); 87 } 88