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