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