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

   1 /* Copyright (C) 1992, 1994, 1997, 2002 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 #include <errno.h>
  20 #include <stddef.h>
  21 #include <termios.h>
  22
  23 /* These are defined both in <bits/termios.h> and in <bits/ioctls.h>.
  24    They should have the same values, but perhaps not written the same way.  */
  25 #undef ECHO
  26 #undef MDMBUF
  27 #undef TOSTOP
  28 #undef FLUSHO
  29 #undef PENDIN
  30 #undef NOFLSH
  31 #include <sys/ioctl.h>
  32
  33
  34 /* Set the state of FD to *TERMIOS_P.  */
  35 int
  36 tcsetattr (fd, optional_actions, termios_p)
  37      int fd;
  38      int optional_actions;
  39      const struct termios *termios_p;
  40 {
  41   struct termios myt;
  42
  43   if (optional_actions & TCSASOFT)
  44     {
  45       myt = *termios_p;
  46       myt.c_cflag |= CIGNORE;
  47       termios_p = &myt;
  48       optional_actions &= ~TCSASOFT;
  49     }
  50
  51   switch (optional_actions)
  52     {
  53     case TCSANOW:
  54       return __ioctl (fd, TIOCSETA, termios_p);
  55
  56     case TCSADRAIN:
  57       return __ioctl (fd, TIOCSETAW, termios_p);
  58
  59     default:
  60       return __ioctl (fd, TIOCSETAF, termios_p);
  61     }
  62 }
  63 libc_hidden_def (tcsetattr)