include/termios.h

   1 /* Copyright (C) 1991,92,93,94,96,97,98,99, 2003 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, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 /*
  20  *      POSIX Standard: 7.1-2 General Terminal Interface        <termios.h>
  21  */
  22
  23 #ifndef _TERMIOS_H
  24 #define _TERMIOS_H      1
  25
  26 #include <features.h>
  27 #ifdef __USE_UNIX98
  28 /* We need `pid_t'.  */
  29 # include <bits/types.h>
  30 # ifndef __pid_t_defined
  31 typedef __pid_t pid_t;
  32 #  define __pid_t_defined
  33 # endif
  34 #endif
  35
  36 __BEGIN_DECLS
  37
  38 /* Get the system-dependent definitions of `struct termios', `tcflag_t',
  39    `cc_t', `speed_t', and all the macros specifying the flag bits.  */
  40 #include <bits/termios.h>
  41
  42 #ifdef __USE_BSD
  43 /* Compare a character C to a value VAL from the `c_cc' array in a
  44    `struct termios'.  If VAL is _POSIX_VDISABLE, no character can match it.  */
  45 # define CCEQ(val, c)   ((c) == (val) && (val) != _POSIX_VDISABLE)
  46 #endif
  47
  48 /* Return the output baud rate stored in *TERMIOS_P.  */
  49 extern speed_t cfgetospeed (__const struct termios *__termios_p) __THROW;
  50
  51 /* Return the input baud rate stored in *TERMIOS_P.  */
  52 extern speed_t cfgetispeed (__const struct termios *__termios_p) __THROW;
  53
  54 /* Set the output baud rate stored in *TERMIOS_P to SPEED.  */
  55 extern int cfsetospeed (struct termios *__termios_p, speed_t __speed) __THROW;
  56 libc_hidden_proto(cfsetospeed)
  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 libc_hidden_proto(cfsetispeed)
  61
  62 #ifdef  __USE_BSD
  63 /* Set both the input and output baud rates in *TERMIOS_OP to SPEED.  */
  64 extern int cfsetspeed (struct termios *__termios_p, speed_t __speed) __THROW;
  65 #endif
  66
  67
  68 /* Put the state of FD into *TERMIOS_P.  */
  69 extern int tcgetattr (int __fd, struct termios *__termios_p) __THROW;
  70 libc_hidden_proto(tcgetattr)
  71
  72 /* Set the state of FD to *TERMIOS_P.
  73    Values for OPTIONAL_ACTIONS (TCSA*) are in <bits/termios.h>.  */
  74 extern int tcsetattr (int __fd, int __optional_actions,
  75                       __const struct termios *__termios_p) __THROW;
  76 libc_hidden_proto(tcsetattr)
  77
  78
  79 #ifdef  __USE_BSD
  80 /* Set *TERMIOS_P to indicate raw mode.  */
  81 extern void cfmakeraw (struct termios *__termios_p) __THROW;
  82 #endif
  83
  84 /* Send zero bits on FD.  */
  85 extern int tcsendbreak (int __fd, int __duration) __THROW;
  86
  87 /* Wait for pending output to be written on FD.
  88
  89    This function is a cancellation point and therefore not marked with
  90    __THROW.  */
  91 extern int tcdrain (int __fd);
  92
  93 /* Flush pending data on FD.
  94    Values for QUEUE_SELECTOR (TC{I,O,IO}FLUSH) are in <bits/termios.h>.  */
  95 extern int tcflush (int __fd, int __queue_selector) __THROW;
  96
  97 /* Suspend or restart transmission on FD.
  98    Values for ACTION (TC[IO]{OFF,ON}) are in <bits/termios.h>.  */
  99 extern int tcflow (int __fd, int __action) __THROW;
 100
 101
 102 #ifdef __USE_UNIX98
 103 /* Get process group ID for session leader for controlling terminal FD.  */
 104 extern __pid_t tcgetsid (int __fd) __THROW;
 105 #endif
 106
 107
 108 #ifdef __USE_BSD
 109 # include <sys/ttydefaults.h>
 110 #endif
 111
 112 __END_DECLS
 113
 114 #endif /* termios.h  */