Annotation of src/usr.bin/biff/biff.c, Revision 1.1.1.1
1.1 deraadt 1: /* $NetBSD: biff.c,v 1.3 1995/03/26 02:34:22 glass Exp $ */
2:
3: /*
4: * Copyright (c) 1980, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by the University of
18: * California, Berkeley and its contributors.
19: * 4. Neither the name of the University nor the names of its contributors
20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
35:
36: #ifndef lint
37: static char copyright[] =
38: "@(#) Copyright (c) 1980, 1993\n\
39: The Regents of the University of California. All rights reserved.\n";
40: #endif /* not lint */
41:
42: #ifndef lint
43: #if 0
44: static char sccsid[] = "@(#)biff.c 8.1 (Berkeley) 6/6/93";
45: #else
46: static char rcsid[] = "$NetBSD: biff.c,v 1.3 1995/03/26 02:34:22 glass Exp $";
47: #endif
48: #endif /* not lint */
49:
50: #include <sys/types.h>
51: #include <sys/stat.h>
52:
53: #include <err.h>
54: #include <errno.h>
55: #include <stdio.h>
56: #include <stdlib.h>
57: #include <string.h>
58: #include <unistd.h>
59:
60: static void usage __P((void));
61:
62: main(argc, argv)
63: int argc;
64: char *argv[];
65: {
66: struct stat sb;
67: int ch;
68: char *name;
69:
70:
71: while ((ch = getopt(argc, argv, "")) != EOF)
72: switch(ch) {
73: case '?':
74: default:
75: usage();
76: }
77: argc -= optind;
78: argv += optind;
79:
80: if ((name = ttyname(STDERR_FILENO)) == NULL)
81: err(2, "tty");
82:
83: if (stat(name, &sb))
84: err(2, "stat");
85:
86: if (*argv == NULL) {
87: (void)printf("is %s\n", sb.st_mode&0100 ? "y" : "n");
88: exit(sb.st_mode & 0100 ? 0 : 1);
89: }
90:
91: switch(argv[0][0]) {
92: case 'n':
93: if (chmod(name, sb.st_mode & ~0100) < 0)
94: err(2, name);
95: break;
96: case 'y':
97: if (chmod(name, sb.st_mode | 0100) < 0)
98: err(2, name);
99: break;
100: default:
101: usage();
102: }
103: exit(sb.st_mode & 0100 ? 0 : 1);
104: }
105:
106: static void
107: usage()
108: {
109: (void)fprintf(stderr, "usage: biff [y | n]\n");
110: exit(2);
111: }