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 * $FreeBSD$ 21 */ 22 23 /* 24 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 */ 27 28 #pragma ident "@(#)file_check.c 1.3 07/05/25 SMI" 29 30 #include "file_common.h" 31 32 static unsigned char bigbuffer[BIGBUFFERSIZE]; 33 34 /* 35 * Given a filename, check that the file consists entirely 36 * of a particular pattern. If the pattern is not specified a 37 * default will be used. For default values see file_common.h 38 */ 39 int 40 main(int argc, char **argv) 41 { 42 int bigfd; 43 long i, n; 44 uint8_t fillchar = DATA; 45 int bigbuffersize = BIGBUFFERSIZE; 46 int64_t read_count = 0; 47 48 /* 49 * Validate arguments 50 */ 51 if (argc < 2) { 52 (void) printf("Usage: %s filename [pattern]\n", 53 argv[0]); 54 exit(1); 55 } 56 57 if (argv[2]) { 58 fillchar = atoi(argv[2]); 59 } 60 61 /* 62 * Read the file contents and check every character 63 * against the supplied pattern. Abort if the 64 * pattern check fails. 65 */ 66 if ((bigfd = open(argv[1], O_RDONLY)) == -1) { 67 (void) printf("open %s failed %d\n", argv[1], errno); 68 exit(1); 69 } 70 71 do { 72 if ((n = read(bigfd, &bigbuffer, bigbuffersize)) == -1) { 73 (void) printf("read failed (%ld), %d\n", n, errno); 74 exit(errno); 75 } 76 77 for (i = 0; i < n; i++) { 78 if (bigbuffer[i] != fillchar) { 79 (void) printf("error %s: 0x%x != 0x%x)\n", 80 argv[1], bigbuffer[i], fillchar); 81 exit(1); 82 } 83 } 84 85 read_count += n; 86 } while (n == bigbuffersize); 87 88 return (0); 89 } 90