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 * Copyright 2022 MNX Cloud, Inc.
29 */
30
31 #include "../file_common.h"
32
33 static unsigned char bigbuffer[BIGBUFFERSIZE];
34
35 /*
36 * Given a filename, check that the file consists entirely
37 * of a particular pattern. If the pattern is not specified a
38 * default will be used. For default values see file_common.h
39 */
40 int
main(int argc,char ** argv)41 main(int argc, char **argv)
42 {
43 int bigfd;
44 long i, n;
45 uchar_t fillchar = DATA;
46 int bigbuffersize = BIGBUFFERSIZE;
47 int64_t read_count = 0;
48
49 /*
50 * Validate arguments
51 */
52 if (argc < 2) {
53 (void) printf("Usage: %s filename [pattern]\n",
54 argv[0]);
55 exit(1);
56 }
57
58 if (argv[2]) {
59 fillchar = atoi(argv[2]);
60 }
61
62 /*
63 * Read the file contents and check every character
64 * against the supplied pattern. Abort if the
65 * pattern check fails.
66 */
67 if ((bigfd = open(argv[1], O_RDONLY)) == -1) {
68 (void) printf("open %s failed %d\n", argv[1], errno);
69 exit(1);
70 }
71
72 do {
73 int exitcode;
74
75 if ((n = read(bigfd, &bigbuffer, bigbuffersize)) == -1) {
76 exitcode = errno;
77 (void) printf("read failed (%ld), %d\n", n, errno);
78 exit(exitcode);
79 }
80
81 for (i = 0; i < n; i++) {
82 if (bigbuffer[i] != fillchar) {
83 (void) printf("error %s: 0x%x != 0x%x)\n",
84 argv[1], bigbuffer[i], fillchar);
85 exit(1);
86 }
87 }
88
89 read_count += n;
90 } while (n == bigbuffersize);
91
92 return (0);
93 }
94