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1 | /* | |
2 | * Author: Tatu Ylonen <ylo@cs.hut.fi> | |
3 | * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland | |
4 | * All rights reserved | |
5 | * Functions for allocating a pseudo-terminal and making it the controlling | |
6 | * tty. | |
7 | * | |
8 | * As far as I am concerned, the code I have written for this software | |
9 | * can be used freely for any purpose. Any derived versions of this | |
10 | * software must be clearly marked as such, and if the derived work is | |
11 | * incompatible with the protocol description in the RFC file, it must be | |
12 | * called by a name other than "ssh" or "Secure Shell". | |
13 | */ | |
14 | ||
15 | /* RCSID("$OpenBSD: sshpty.h,v 1.1 2001/03/04 01:46:30 djm Exp $"); */ | |
16 | ||
17 | #ifndef SSHPTY_H | |
18 | #define SSHPTY_H | |
19 | ||
20 | /* | |
21 | * Allocates and opens a pty. Returns 0 if no pty could be allocated, or | |
22 | * nonzero if a pty was successfully allocated. On success, open file | |
23 | * descriptors for the pty and tty sides and the name of the tty side are | |
24 | * returned (the buffer must be able to hold at least 64 characters). | |
25 | */ | |
26 | int pty_allocate(int *ptyfd, int *ttyfd, char *ttyname, int ttynamelen); | |
27 | ||
28 | /* | |
29 | * Releases the tty. Its ownership is returned to root, and permissions to | |
30 | * 0666. | |
31 | */ | |
32 | void pty_release(const char *ttyname); | |
33 | ||
34 | /* | |
35 | * Makes the tty the processes controlling tty and sets it to sane modes. | |
36 | * This may need to reopen the tty to get rid of possible eavesdroppers. | |
37 | */ | |
38 | void pty_make_controlling_tty(int *ttyfd, const char *ttyname); | |
39 | ||
40 | /* Changes the window size associated with the pty. */ | |
41 | void | |
42 | pty_change_window_size(int ptyfd, int row, int col, | |
43 | int xpixel, int ypixel); | |
44 | ||
45 | void pty_setowner(struct passwd *pw, const char *ttyname); | |
46 | ||
47 | #endif /* SSHPTY_H */ |