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 * Copyright 2022 MNX Cloud, Inc. 29 */ 30 31 #include "../file_common.h" 32 33 static unsigned char bigbuffer[BIGBUFFERSIZE]; 34 35 /* 36 * Given a filename, check that the file consists entirely 37 * of a particular pattern. If the pattern is not specified a 38 * default will be used. For default values see file_common.h 39 */ 40 int 41 main(int argc, char **argv) 42 { 43 int bigfd; 44 long i, n; 45 uchar_t fillchar = DATA; 46 int bigbuffersize = BIGBUFFERSIZE; 47 int64_t read_count = 0; 48 49 /* 50 * Validate arguments 51 */ 52 if (argc < 2) { 53 (void) printf("Usage: %s filename [pattern]\n", 54 argv[0]); 55 exit(1); 56 } 57 58 if (argv[2]) { 59 fillchar = atoi(argv[2]); 60 } 61 62 /* 63 * Read the file contents and check every character 64 * against the supplied pattern. Abort if the 65 * pattern check fails. 66 */ 67 if ((bigfd = open(argv[1], O_RDONLY)) == -1) { 68 (void) printf("open %s failed %d\n", argv[1], errno); 69 exit(1); 70 } 71 72 do { 73 int exitcode; 74 75 if ((n = read(bigfd, &bigbuffer, bigbuffersize)) == -1) { 76 exitcode = errno; 77 (void) printf("read failed (%ld), %d\n", n, errno); 78 exit(exitcode); 79 } 80 81 for (i = 0; i < n; i++) { 82 if (bigbuffer[i] != fillchar) { 83 (void) printf("error %s: 0x%x != 0x%x)\n", 84 argv[1], bigbuffer[i], fillchar); 85 exit(1); 86 } 87 } 88 89 read_count += n; 90 } while (n == bigbuffersize); 91 92 return (0); 93 } 94