sysdeps/unix/bsd/bsd4.4/tcsetattr.c

   1 /* Copyright (C) 1992, 1994 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 Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 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 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include <ansidecl.h>
  20 #include <errno.h>
  21 #include <stddef.h>
  22 #include <termios.h>
  23
  24 /* These are defined both in termbits.h and in ioctls.h.
  25    They should have the same values, but perhaps not written the same way.  */
  26 #undef ECHO
  27 #undef MDMBUF
  28 #undef TOSTOP
  29 #undef FLUSHO
  30 #undef PENDIN
  31 #undef NOFLSH
  32 #include <sys/ioctl.h>
  33
  34
  35 /* Set the state of FD to *TERMIOS_P.  */
  36 int
  37 DEFUN(tcsetattr, (fd, optional_actions, termios_p),
  38       int fd AND int optional_actions AND CONST struct termios *termios_p)
  39 {
  40   struct termios myt;
  41
  42   if (optional_actions & TCSASOFT)
  43     {
  44       myt = *termios_p;
  45       myt.c_cflag |= CIGNORE;
  46       termios_p = &myt;
  47       optional_actions &= ~TCSASOFT;
  48     }
  49
  50   switch (optional_actions)
  51     {
  52     case TCSANOW:
  53       return __ioctl (fd, TIOCSETA, termios_p);
  54
  55     case TCSADRAIN:
  56       return __ioctl (fd, TIOCSETAW, termios_p);
  57
  58     default:
  59       return __ioctl (fd, TIOCSETAF, termios_p);
  60     }
  61 }