1 // SPDX-License-Identifier: CDDL-1.0
2 /*
3 * CDDL HEADER START
4 *
5 * The contents of this file are subject to the terms of the
6 * Common Development and Distribution License (the "License").
7 * You may not use this file except in compliance with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or https://opensource.org/licenses/CDDL-1.0.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22
23 /*
24 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
25 * Use is subject to license terms.
26 */
27
28 #include "file_common.h"
29
30 static unsigned char bigbuffer[BIGBUFFERSIZE];
31
32 /*
33 * Given a filename, check that the file consists entirely
34 * of a particular pattern. If the pattern is not specified a
35 * default will be used. For default values see file_common.h
36 */
37 int
main(int argc,char ** argv)38 main(int argc, char **argv)
39 {
40 int bigfd;
41 long i, n;
42 unsigned char fillchar = DATA;
43 int bigbuffersize = BIGBUFFERSIZE;
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 } while (n == bigbuffersize);
82
83 return (0);
84 }
85