Commit | Line | Data |
---|---|---|
c68204ea BJ |
1 | static char *sccsid ="@(#)biff.c 4.1 (Berkeley) %G%"; |
2 | /* | |
3 | * biff | |
4 | */ | |
5 | ||
6 | #include <sys/types.h> | |
7 | #include <stat.h> | |
8 | #include <stdio.h> | |
9 | ||
10 | char *ttyname(); | |
11 | ||
12 | main(argc, argv) | |
13 | int argc; | |
14 | char **argv; | |
15 | { | |
16 | char *cp = ttyname(2); | |
17 | struct stat stb; | |
18 | ||
19 | argc--, argv++; | |
20 | if (cp == 0) | |
21 | fprintf(stderr, "Where are you?\n"), exit(1); | |
22 | if (stat(cp, &stb) < 0) | |
23 | perror(cp), exit(1); | |
24 | if (argc == 0) { | |
25 | printf("is %s\n", stb.st_mode&0100 ? "y" : "n"); | |
26 | exit((stb.st_mode&0100) ? 0 : 1); | |
27 | } | |
28 | switch (argv[0][0]) { | |
29 | ||
30 | case 'y': | |
31 | if (chmod(cp, stb.st_mode|0100) < 0) | |
32 | perror(cp); | |
33 | break; | |
34 | ||
35 | case 'n': | |
36 | if (chmod(cp, stb.st_mode&~0100) < 0) | |
37 | perror(cp); | |
38 | break; | |
39 | ||
40 | default: | |
41 | fprintf(stderr, "usage: biff [y] [n]\n"); | |
42 | } | |
43 | exit((stb.st_mode&0100) ? 0 : 1); | |
44 | } |