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 https://opensource.org/licenses/CDDL-1.0.
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
29 static 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 */
36 int
main(int argc,char ** argv)37 main(int argc, char **argv)
38 {
39 int bigfd;
40 long i, n;
41 unsigned char fillchar = DATA;
42 int bigbuffersize = BIGBUFFERSIZE;
43
44 /*
45 * Validate arguments
46 */
47 if (argc < 2) {
48 (void) printf("Usage: %s filename [pattern]\n",
49 argv[0]);
50 exit(1);
51 }
52
53 if (argv[2]) {
54 fillchar = atoi(argv[2]);
55 }
56
57 /*
58 * Read the file contents and check every character
59 * against the supplied pattern. Abort if the
60 * pattern check fails.
61 */
62 if ((bigfd = open(argv[1], O_RDONLY)) == -1) {
63 (void) printf("open %s failed %d\n", argv[1], errno);
64 exit(1);
65 }
66
67 do {
68 if ((n = read(bigfd, &bigbuffer, bigbuffersize)) == -1) {
69 (void) printf("read failed (%ld), %d\n", n, errno);
70 exit(errno);
71 }
72
73 for (i = 0; i < n; i++) {
74 if (bigbuffer[i] != fillchar) {
75 (void) printf("error %s: 0x%x != 0x%x)\n",
76 argv[1], bigbuffer[i], fillchar);
77 exit(1);
78 }
79 }
80 } while (n == bigbuffersize);
81
82 return (0);
83 }
84