glibc (2.38)
1 /* Copyright (C) 1991-2023 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 /*
19 * POSIX Standard: 7.1-2 General Terminal Interface <termios.h>
20 */
21
22 #ifndef _TERMIOS_H
23 #define _TERMIOS_H 1
24
25 #include <features.h>
26 #if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
27 /* We need `pid_t'. */
28 # include <bits/types.h>
29 # ifndef __pid_t_defined
30 typedef __pid_t pid_t;
31 # define __pid_t_defined
32 # endif
33 #endif
34
35 __BEGIN_DECLS
36
37 /* Get the system-dependent definitions of `struct termios', `tcflag_t',
38 `cc_t', `speed_t', and all the macros specifying the flag bits. */
39 #include <bits/termios.h>
40
41 #ifdef __USE_MISC
42 /* Compare a character C to a value VAL from the `c_cc' array in a
43 `struct termios'. If VAL is _POSIX_VDISABLE, no character can match it. */
44 # define CCEQ(val, c) ((c) == (val) && (val) != _POSIX_VDISABLE)
45 #endif
46
47 /* Return the output baud rate stored in *TERMIOS_P. */
48 extern speed_t cfgetospeed (const struct termios *__termios_p) __THROW;
49
50 /* Return the input baud rate stored in *TERMIOS_P. */
51 extern speed_t cfgetispeed (const struct termios *__termios_p) __THROW;
52
53 /* Set the output baud rate stored in *TERMIOS_P to SPEED. */
54 extern int cfsetospeed (struct termios *__termios_p, speed_t __speed) __THROW;
55
56 /* Set the input baud rate stored in *TERMIOS_P to SPEED. */
57 extern int cfsetispeed (struct termios *__termios_p, speed_t __speed) __THROW;
58
59 #ifdef __USE_MISC
60 /* Set both the input and output baud rates in *TERMIOS_OP to SPEED. */
61 extern int cfsetspeed (struct termios *__termios_p, speed_t __speed) __THROW;
62 #endif
63
64
65 /* Put the state of FD into *TERMIOS_P. */
66 extern int tcgetattr (int __fd, struct termios *__termios_p) __THROW;
67
68 /* Set the state of FD to *TERMIOS_P.
69 Values for OPTIONAL_ACTIONS (TCSA*) are in <bits/termios.h>. */
70 extern int tcsetattr (int __fd, int __optional_actions,
71 const struct termios *__termios_p) __THROW;
72
73
74 #ifdef __USE_MISC
75 /* Set *TERMIOS_P to indicate raw mode. */
76 extern void cfmakeraw (struct termios *__termios_p) __THROW;
77 #endif
78
79 /* Send zero bits on FD. */
80 extern int tcsendbreak (int __fd, int __duration) __THROW;
81
82 /* Wait for pending output to be written on FD.
83
84 This function is a cancellation point and therefore not marked with
85 __THROW. */
86 extern int tcdrain (int __fd);
87
88 /* Flush pending data on FD.
89 Values for QUEUE_SELECTOR (TC{I,O,IO}FLUSH) are in <bits/termios.h>. */
90 extern int tcflush (int __fd, int __queue_selector) __THROW;
91
92 /* Suspend or restart transmission on FD.
93 Values for ACTION (TC[IO]{OFF,ON}) are in <bits/termios.h>. */
94 extern int tcflow (int __fd, int __action) __THROW;
95
96
97 #if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
98 /* Get process group ID for session leader for controlling terminal FD. */
99 extern __pid_t tcgetsid (int __fd) __THROW;
100 #endif
101
102
103 #ifdef __USE_MISC
104 # include <sys/ttydefaults.h>
105 #endif
106
107 __END_DECLS
108
109 #endif /* termios.h */
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