xref: /illumos-gate/usr/src/ucbcmd/biff/biff.c (revision dd72704bd9e794056c558153663c739e2012d721)
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, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
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 2005 Sun Microsystems, Inc.  All rights reserved.
25  * Use is subject to license terms.
26  */
27 
28 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
29 /*	  All Rights Reserved  	*/
30 
31 /*
32  * University Copyright- Copyright (c) 1982, 1986, 1988
33  * The Regents of the University of California
34  * All Rights Reserved
35  *
36  * University Acknowledgment- Portions of this document are derived from
37  * software developed by the University of California, Berkeley, and its
38  * contributors.
39  */
40 
41 /*
42  * biff
43  */
44 
45 #include <stdlib.h>
46 #include <unistd.h>
47 #include <sys/types.h>
48 #include <sys/stat.h>
49 #include <stdio.h>
50 #include <locale.h>
51 
52 int
53 main(int argc, char **argv)
54 {
55 	char *cp = ttyname(2);
56 	struct stat stb;
57 
58 	(void) setlocale(LC_ALL, "");
59 
60 #if !defined(TEXT_DOMAIN)
61 #define	TEXT_DOMAIN "SYS_TEST"
62 #endif
63 	(void) textdomain(TEXT_DOMAIN);
64 
65 	argc--, argv++;
66 	if (cp == 0) {
67 		(void) fprintf(stderr,
68 			gettext("biff failed:  cannot locate your tty:  "
69 				"ttyname() for file descriptor 2 returned"
70 				" NULL\n"));
71 		exit(1);
72 	}
73 	if (stat(cp, &stb) < 0)
74 		perror(cp), exit(1);
75 	if (argc == 0) {
76 		(void) printf("is %s\n",
77 			stb.st_mode&0100 ? gettext("y") : gettext("n"));
78 		exit((stb.st_mode&0100) ? 0 : 1);
79 	}
80 	switch (argv[0][0]) {
81 
82 	case 'y':
83 		if (chmod(cp, stb.st_mode|0100) < 0)
84 			perror(cp);
85 		break;
86 
87 	case 'n':
88 		if (chmod(cp, stb.st_mode&~0100) < 0)
89 			perror(cp);
90 		break;
91 
92 	default:
93 		(void) fprintf(stderr, gettext("usage: biff [y] [n]\n"));
94 	}
95 	return ((stb.st_mode&0100) ? 0 : 1);
96 }
97