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
32static 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 */
39int
40main(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