appl/login/stty_default.c

   1 /*
   2  * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "login_locl.h"
  35
  36 RCSID("$Id$");
  37
  38 #include <termios.h>
  39
  40 /* HP-UX 9.0 termios doesn't define these */
  41 #ifndef FLUSHO
  42 #define FLUSHO  0
  43 #endif
  44
  45 #ifndef XTABS
  46 #define XTABS   0
  47 #endif
  48
  49 #ifndef OXTABS
  50 #define OXTABS  XTABS
  51 #endif
  52
  53 /* Ultrix... */
  54 #ifndef ECHOPRT
  55 #define ECHOPRT 0
  56 #endif
  57
  58 #ifndef ECHOCTL
  59 #define ECHOCTL 0
  60 #endif
  61
  62 #ifndef ECHOKE
  63 #define ECHOKE  0
  64 #endif
  65
  66 #ifndef IMAXBEL
  67 #define IMAXBEL 0
  68 #endif
  69
  70 #define Ctl(x) ((x) ^ 0100)
  71
  72 void
  73 stty_default(void)
  74 {
  75     struct      termios termios;
  76
  77     /*
  78      * Finalize the terminal settings. Some systems default to 8 bits,
  79      * others to 7, so we should leave that alone.
  80      */
  81     tcgetattr(0, &termios);
  82
  83     termios.c_iflag |= (BRKINT|IGNPAR|ICRNL|IXON|IMAXBEL);
  84     termios.c_iflag &= ~IXANY;
  85
  86     termios.c_lflag |= (ISIG|IEXTEN|ICANON|ECHO|ECHOE|ECHOK|ECHOCTL|ECHOKE);
  87     termios.c_lflag &= ~(ECHOPRT|TOSTOP|FLUSHO);
  88
  89     termios.c_oflag |= (OPOST|ONLCR);
  90     termios.c_oflag &= ~OXTABS;
  91
  92     termios.c_cc[VINTR] = Ctl('C');
  93     termios.c_cc[VERASE] = Ctl('H');
  94     termios.c_cc[VKILL] = Ctl('U');
  95     termios.c_cc[VEOF] = Ctl('D');
  96
  97     termios.c_cc[VSUSP] = Ctl('Z');
  98
  99     tcsetattr(0, TCSANOW, &termios);
 100 }