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cc940f30 WJ |
1 | /* |
2 | * Copyright (c) 1980 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #ifndef lint | |
35 | char copyright[] = | |
36 | "@(#) Copyright (c) 1980 The Regents of the University of California.\n\ | |
37 | All rights reserved.\n"; | |
38 | #endif /* not lint */ | |
39 | ||
40 | #ifndef lint | |
41 | static char sccsid[] = "@(#)biff.c 5.3 (Berkeley) 6/1/90"; | |
42 | #endif /* not lint */ | |
43 | ||
44 | /* | |
45 | * biff | |
46 | */ | |
47 | #include <sys/types.h> | |
48 | #include <sys/stat.h> | |
49 | #include <stdio.h> | |
50 | ||
51 | char *ttyname(); | |
52 | ||
53 | main(argc, argv) | |
54 | int argc; | |
55 | char **argv; | |
56 | { | |
57 | char *cp = ttyname(2); | |
58 | struct stat stb; | |
59 | ||
60 | argc--, argv++; | |
61 | if (cp == 0) | |
62 | fprintf(stderr, "Where are you?\n"), exit(1); | |
63 | if (stat(cp, &stb) < 0) | |
64 | perror(cp), exit(1); | |
65 | if (argc == 0) { | |
66 | printf("is %s\n", stb.st_mode&0100 ? "y" : "n"); | |
67 | exit((stb.st_mode&0100) ? 0 : 1); | |
68 | } | |
69 | switch (argv[0][0]) { | |
70 | ||
71 | case 'y': | |
72 | if (chmod(cp, stb.st_mode|0100) < 0) | |
73 | perror(cp); | |
74 | break; | |
75 | ||
76 | case 'n': | |
77 | if (chmod(cp, stb.st_mode&~0100) < 0) | |
78 | perror(cp); | |
79 | break; | |
80 | ||
81 | default: | |
82 | fprintf(stderr, "usage: biff [y] [n]\n"); | |
83 | } | |
84 | exit((stb.st_mode&0100) ? 0 : 1); | |
85 | } |