1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/* LIBAX25 - Library for AX.25 programs
* Copyright (C) 1997-1999 Jonathan Naylor, Tomi Manninen, Jean-Paul Roubelat
* and Alan Cox.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Generic serial port handling functions.
*/
#ifndef _TTYUTILS_H
#define _TTYUTILS_H
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*
* Put a given file descriptor into raw mode, if the hwflag is set to TRUE
* then hardware handshaking is enabled. Returns TRUE if successful.
*/
extern int tty_raw(int fd, int hwflag);
/*
* Set the speed of the given file descriptor. Returns TRUE is it was
* successful.
*/
extern int tty_speed(int fd, int speed);
/*
* Determines whether a given tty is already open by another process. Returns
* TRUE if is already locked, or FALSE if it is free.
*/
extern int tty_is_locked(char *tty);
/*
* Creates a lock file for the given tty. It writes the process ID to the
* file so take care if doing a fork. Returns TRUE if everything was OK.
*/
extern int tty_lock(char *tty);
/*
* Removes the lock file for a given tty. Returns TRUE if successful.
*/
extern int tty_unlock(char *tty);
#ifdef __cplusplus
}
#endif
#endif
|
