termios/termios.h

   1 /* Copyright (C) 1991-1994,1996-1999,2003,2010,2012
   2    Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 /*
  21  *      POSIX Standard: 7.1-2 General Terminal Interface        <termios.h>
  22  */
  23
  24 #ifndef _TERMIOS_H
  25 #define _TERMIOS_H      1
  26
  27 #include <features.h>
  28 #if defined __USE_UNIX98 || defined __USE_XOPEN2K8
  29 /* We need `pid_t'.  */
  30 # include <bits/types.h>
  31 # ifndef __pid_t_defined
  32 typedef __pid_t pid_t;
  33 #  define __pid_t_defined
  34 # endif
  35 #endif
  36
  37 __BEGIN_DECLS
  38
  39 /* Get the system-dependent definitions of `struct termios', `tcflag_t',
  40    `cc_t', `speed_t', and all the macros specifying the flag bits.  */
  41 #include <bits/termios.h>
  42
  43 #ifdef __USE_BSD
  44 /* Compare a character C to a value VAL from the `c_cc' array in a
  45    `struct termios'.  If VAL is _POSIX_VDISABLE, no character can match it.  */
  46 # define CCEQ(val, c)   ((c) == (val) && (val) != _POSIX_VDISABLE)
  47 #endif
  48
  49 /* Return the output baud rate stored in *TERMIOS_P.  */
  50 extern speed_t cfgetospeed (const struct termios *__termios_p) __THROW;
  51
  52 /* Return the input baud rate stored in *TERMIOS_P.  */
  53 extern speed_t cfgetispeed (const struct termios *__termios_p) __THROW;
  54
  55 /* Set the output baud rate stored in *TERMIOS_P to SPEED.  */
  56 extern int cfsetospeed (struct termios *__termios_p, speed_t __speed) __THROW;
  57
  58 /* Set the input baud rate stored in *TERMIOS_P to SPEED.  */
  59 extern int cfsetispeed (struct termios *__termios_p, speed_t __speed) __THROW;
  60
  61 #ifdef  __USE_BSD
  62 /* Set both the input and output baud rates in *TERMIOS_OP to SPEED.  */
  63 extern int cfsetspeed (struct termios *__termios_p, speed_t __speed) __THROW;
  64 #endif
  65
  66
  67 /* Put the state of FD into *TERMIOS_P.  */
  68 extern int tcgetattr (int __fd, struct termios *__termios_p) __THROW;
  69
  70 /* Set the state of FD to *TERMIOS_P.
  71    Values for OPTIONAL_ACTIONS (TCSA*) are in <bits/termios.h>.  */
  72 extern int tcsetattr (int __fd, int __optional_actions,
  73                       const struct termios *__termios_p) __THROW;
  74
  75
  76 #ifdef  __USE_BSD
  77 /* Set *TERMIOS_P to indicate raw mode.  */
  78 extern void cfmakeraw (struct termios *__termios_p) __THROW;
  79 #endif
  80
  81 /* Send zero bits on FD.  */
  82 extern int tcsendbreak (int __fd, int __duration) __THROW;
  83
  84 /* Wait for pending output to be written on FD.
  85
  86    This function is a cancellation point and therefore not marked with
  87    __THROW.  */
  88 extern int tcdrain (int __fd);
  89
  90 /* Flush pending data on FD.
  91    Values for QUEUE_SELECTOR (TC{I,O,IO}FLUSH) are in <bits/termios.h>.  */
  92 extern int tcflush (int __fd, int __queue_selector) __THROW;
  93
  94 /* Suspend or restart transmission on FD.
  95    Values for ACTION (TC[IO]{OFF,ON}) are in <bits/termios.h>.  */
  96 extern int tcflow (int __fd, int __action) __THROW;
  97
  98
  99 #ifdef __USE_UNIX98
 100 /* Get process group ID for session leader for controlling terminal FD.  */
 101 extern __pid_t tcgetsid (int __fd) __THROW;
 102 #endif
 103
 104
 105 #ifdef __USE_BSD
 106 # include <sys/ttydefaults.h>
 107 #endif
 108
 109 __END_DECLS
 110
 111 #endif /* termios.h  */