1 /* Copyright (C) 1991-2022 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 */ 110