sysdeps/unix/sysv/linux/tcgetattr.c

   1 /* Copyright (C) 1992, 1995, 1997 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 not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 #include <termios.h>
  20 #include <sys/ioctl.h>
  21 #include <sys/types.h>
  22
  23 /* The difference here is that the termios structure used in the
  24    kernel is not the same as we use in the libc.  Therefore we must
  25    translate it here.  */
  26 #include <sys/kernel_termios.h>
  27
  28 /* Put the state of FD into *TERMIOS_P.  */
  29 int
  30 __tcgetattr (fd, termios_p)
  31       int fd;
  32       struct termios *termios_p;
  33 {
  34   struct __kernel_termios k_termios;
  35   int retval;
  36   size_t cnt;
  37
  38   retval = __ioctl (fd, TCGETS, &k_termios);
  39
  40   termios_p->c_iflag = k_termios.c_iflag;
  41   termios_p->c_oflag = k_termios.c_oflag;
  42   termios_p->c_cflag = k_termios.c_cflag;
  43   termios_p->c_lflag = k_termios.c_lflag;
  44   termios_p->c_line = k_termios.c_line;
  45 #ifdef _HAVE_C_ISPEED
  46   termios_p->c_ispeed = k_termios.c_ispeed;
  47 #endif
  48 #ifdef _HAVE_C_OSPEED
  49   termios_p->c_ospeed = k_termios.c_ospeed;
  50 #endif
  51   for (cnt = 0; cnt < __KERNEL_NCCS; ++cnt)
  52     termios_p->c_cc[cnt] = k_termios.c_cc[cnt];
  53
  54   return retval;
  55 }
  56
  57 weak_alias (__tcgetattr, tcgetattr)