sysdeps/unix/sysv/tcgetattr.c

   1 /* Copyright (C) 1992, 1995, 1996 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 <errno.h>
  20 #include <stddef.h>
  21 #include <sysv_termio.h>
  22 #include <termios.h>
  23 #include <sys/ioctl.h>
  24
  25 /* Put the state of FD into *TERMIOS_P.  */
  26 int
  27 __tcgetattr (fd, termios_p)
  28      int fd;
  29      struct termios *termios_p;
  30 {
  31   struct __sysv_termio buf;
  32   int termio_speed;
  33
  34   if (termios_p == NULL)
  35     {
  36       __set_errno (EINVAL);
  37       return -1;
  38     }
  39
  40   if (__ioctl (fd, _TCGETA, &buf) < 0)
  41     return -1;
  42
  43   termio_speed = buf.c_cflag & _SYSV_CBAUD;
  44   termios_p->__ospeed =
  45     (termio_speed == _SYSV_B0 ? 0 :
  46      termio_speed == _SYSV_B50 ? 50 :
  47      termio_speed == _SYSV_B75 ? 75 :
  48      termio_speed == _SYSV_B110 ? 110 :
  49      termio_speed == _SYSV_B134 ? 134 :
  50      termio_speed == _SYSV_B150 ? 150 :
  51      termio_speed == _SYSV_B200 ? 200 :
  52      termio_speed == _SYSV_B300 ? 300 :
  53      termio_speed == _SYSV_B600 ? 600 :
  54      termio_speed == _SYSV_B1200 ? 1200 :
  55      termio_speed == _SYSV_B1800 ? 1800 :
  56      termio_speed == _SYSV_B2400 ? 2400 :
  57      termio_speed == _SYSV_B4800 ? 4800 :
  58      termio_speed == _SYSV_B9600 ? 9600 :
  59      termio_speed == _SYSV_B19200 ? 19200 :
  60      termio_speed == _SYSV_B38400 ? 38400 :
  61      -1);
  62   termios_p->__ispeed = termios_p->__ospeed;
  63
  64   termios_p->c_iflag = 0;
  65   if (buf.c_iflag & _SYSV_IGNBRK)
  66     termios_p->c_iflag |= IGNBRK;
  67   if (buf.c_iflag & _SYSV_BRKINT)
  68     termios_p->c_iflag |= BRKINT;
  69   if (buf.c_iflag & _SYSV_IGNPAR)
  70     termios_p->c_iflag |= IGNPAR;
  71   if (buf.c_iflag & _SYSV_PARMRK)
  72     termios_p->c_iflag |= PARMRK;
  73   if (buf.c_iflag & _SYSV_INPCK)
  74     termios_p->c_iflag |= INPCK;
  75   if (buf.c_iflag & _SYSV_ISTRIP)
  76     termios_p->c_iflag |= ISTRIP;
  77   if (buf.c_iflag & _SYSV_INLCR)
  78     termios_p->c_iflag |= INLCR;
  79   if (buf.c_iflag & _SYSV_IGNCR)
  80     termios_p->c_iflag |= IGNCR;
  81   if (buf.c_iflag & _SYSV_ICRNL)
  82     termios_p->c_iflag |= ICRNL;
  83   if (buf.c_iflag & _SYSV_IXON)
  84     termios_p->c_iflag |= IXON;
  85   if (buf.c_iflag & _SYSV_IXOFF)
  86     termios_p->c_iflag |= IXOFF;
  87   if (buf.c_iflag & _SYSV_IXANY)
  88     termios_p->c_iflag |= IXANY;
  89   if (buf.c_iflag & _SYSV_IMAXBEL)
  90     termios_p->c_iflag |= IMAXBEL;
  91
  92   termios_p->c_oflag = 0;
  93   if (buf.c_oflag & OPOST)
  94     termios_p->c_oflag |= OPOST;
  95   if (buf.c_oflag & ONLCR)
  96     termios_p->c_oflag |= ONLCR;
  97   termios_p->c_cflag = 0;
  98   switch (buf.c_cflag & _SYSV_CSIZE)
  99     {
 100     case _SYSV_CS5:
 101       termios_p->c_cflag |= CS5;
 102       break;
 103     case _SYSV_CS6:
 104       termios_p->c_cflag |= CS6;
 105       break;
 106     case _SYSV_CS7:
 107       termios_p->c_cflag |= CS7;
 108       break;
 109     case _SYSV_CS8:
 110       termios_p->c_cflag |= CS8;
 111       break;
 112     }
 113   if (buf.c_cflag & _SYSV_CSTOPB)
 114     termios_p->c_cflag |= CSTOPB;
 115   if (buf.c_cflag & _SYSV_CREAD)
 116     termios_p->c_cflag |= CREAD;
 117   if (buf.c_cflag & _SYSV_PARENB)
 118     termios_p->c_cflag |= PARENB;
 119   if (buf.c_cflag & _SYSV_PARODD)
 120     termios_p->c_cflag |= PARODD;
 121   if (buf.c_cflag & _SYSV_HUPCL)
 122     termios_p->c_cflag |= HUPCL;
 123   if (buf.c_cflag & _SYSV_CLOCAL)
 124     termios_p->c_cflag |= CLOCAL;
 125   termios_p->c_lflag = 0;
 126   if (buf.c_lflag & _SYSV_ISIG)
 127     termios_p->c_lflag |= _ISIG;
 128   if (buf.c_lflag & _SYSV_ICANON)
 129     termios_p->c_lflag |= _ICANON;
 130   if (buf.c_lflag & _SYSV_ECHO)
 131     termios_p->c_lflag |= _ECHO;
 132   if (buf.c_lflag & _SYSV_ECHOE)
 133     termios_p->c_lflag |= _ECHOE;
 134   if (buf.c_lflag & _SYSV_ECHOK)
 135     termios_p->c_lflag |= _ECHOK;
 136   if (buf.c_lflag & _SYSV_ECHONL)
 137     termios_p->c_lflag |= _ECHONL;
 138   if (buf.c_lflag & _SYSV_NOFLSH)
 139     termios_p->c_lflag |= _NOFLSH;
 140   if (buf.c_lflag & _SYSV_TOSTOP)
 141     termios_p->c_lflag |= _TOSTOP;
 142   if (buf.c_lflag & _SYSV_ECHOKE)
 143     termios_p->c_lflag |= ECHOKE;
 144   if (buf.c_lflag & _SYSV_ECHOPRT)
 145     termios_p->c_lflag |= ECHOPRT;
 146   if (buf.c_lflag & _SYSV_ECHOCTL)
 147     termios_p->c_lflag |= ECHOCTL;
 148   if (buf.c_lflag & _SYSV_FLUSHO)
 149     termios_p->c_lflag |= FLUSHO;
 150   if (buf.c_lflag & _SYSV_PENDIN)
 151     termios_p->c_lflag |= PENDIN;
 152   if (buf.c_lflag & _SYSV_IEXTEN)
 153     termios_p->c_lflag |= IEXTEN;
 154
 155   termios_p->c_cc[VEOF] = buf.c_cc[_SYSV_VEOF];
 156   termios_p->c_cc[VEOL] = buf.c_cc[_SYSV_VEOL];
 157   termios_p->c_cc[VEOL2] = buf.c_cc[_SYSV_VEOL2];
 158   termios_p->c_cc[VERASE] = buf.c_cc[_SYSV_VERASE];
 159   termios_p->c_cc[VKILL] = buf.c_cc[_SYSV_VKILL];
 160   termios_p->c_cc[VINTR] = buf.c_cc[_SYSV_VINTR];
 161   termios_p->c_cc[VQUIT] = buf.c_cc[_SYSV_VQUIT];
 162   termios_p->c_cc[VSTART] = '\021'; /* XON (^Q).  */
 163   termios_p->c_cc[VSTOP] = '\023'; /* XOFF (^S).  */
 164   termios_p->c_cc[VSUSP] = '\0'; /* System V release 3 lacks job control.  */
 165   termios_p->c_cc[VMIN] = buf.c_cc[_SYSV_VMIN];
 166   termios_p->c_cc[VTIME] = buf.c_cc[_SYSV_VTIME];
 167
 168   return 0;
 169 }
 170
 171 weak_alias (__tcgetattr, tcgetattr)