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 #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 uint8_t fillchar = DATA;
43 int bigbuffersize = BIGBUFFERSIZE;
44 int64_t read_count = 0;
45
46 /*
47 * Validate arguments
48 */
49 if (argc < 2) {
50 (void) printf("Usage: %s filename [pattern]\n",
51 argv[0]);
52 exit(1);
53 }
54
55 if (argv[2]) {
56 fillchar = atoi(argv[2]);
57 }
58
59 /*
60 * Read the file contents and check every character
61 * against the supplied pattern. Abort if the
62 * pattern check fails.
63 */
64 if ((bigfd = open(argv[1], O_RDONLY)) == -1) {
65 (void) printf("open %s failed %d\n", argv[1], errno);
66 exit(1);
67 }
68
69 do {
70 if ((n = read(bigfd, &bigbuffer, bigbuffersize)) == -1) {
71 (void) printf("read failed (%ld), %d\n", n, errno);
72 exit(errno);
73 }
74
75 for (i = 0; i < n; i++) {
76 if (bigbuffer[i] != fillchar) {
77 (void) printf("error %s: 0x%x != 0x%x)\n",
78 argv[1], bigbuffer[i], fillchar);
79 exit(1);
80 }
81 }
82
83 read_count += n;
84 } while (n == bigbuffersize);
85
86 return (0);
87 }
88