projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| b8f253e8 KM |
1 | /* |
| 2 | * Copyright (c) 1984 Regents of the University of California. | |
| 3 | * All rights reserved. The Berkeley software License Agreement | |
| 4 | * specifies the terms and conditions for redistribution. | |
| 5 | */ | |
| 6 | ||
| 2ce81398 DS |
7 | #if defined(LIBC_SCCS) && !defined(lint) |
| 8 | static char sccsid[] = "@(#)ttyslot.c 5.2 (Berkeley) %G%"; | |
| 9 | #endif LIBC_SCCS and not lint | |
| 66bba310 | 10 | |
| 2bbb9f0d BJ |
11 | /* |
| 12 | * Return the number of the slot in the utmp file | |
| 13 | * corresponding to the current user: try for file 0, 1, 2. | |
| 14 | * Definition is the line number in the /etc/ttys file. | |
| 15 | */ | |
| fb7ebc6b | 16 | #include <ttyent.h> |
| 2bbb9f0d BJ |
17 | |
| 18 | char *ttyname(); | |
| 2bbb9f0d | 19 | char *rindex(); |
| 2bbb9f0d BJ |
20 | |
| 21 | #define NULL 0 | |
| 22 | ||
| 23 | ttyslot() | |
| 24 | { | |
| fb7ebc6b | 25 | register struct ttyent *ty; |
| 2bbb9f0d | 26 | register char *tp, *p; |
| cb35684d | 27 | register s; |
| 2bbb9f0d | 28 | |
| 66bba310 SL |
29 | if ((tp = ttyname(0)) == NULL && |
| 30 | (tp = ttyname(1)) == NULL && | |
| 31 | (tp = ttyname(2)) == NULL) | |
| 2bbb9f0d BJ |
32 | return(0); |
| 33 | if ((p = rindex(tp, '/')) == NULL) | |
| 34 | p = tp; | |
| 35 | else | |
| 36 | p++; | |
| fb7ebc6b | 37 | setttyent(); |
| 2bbb9f0d | 38 | s = 0; |
| fb7ebc6b | 39 | while ((ty = getttyent()) != NULL) { |
| 2bbb9f0d | 40 | s++; |
| fb7ebc6b RC |
41 | if (strcmp(ty->ty_name, p) == 0) { |
| 42 | endttyent(); | |
| 66bba310 | 43 | return (s); |
| 2bbb9f0d BJ |
44 | } |
| 45 | } | |
| fb7ebc6b | 46 | endttyent(); |
| 66bba310 | 47 | return (0); |
| 2bbb9f0d | 48 | } |