hack/hack.ioctl.c

   1 /*      $NetBSD: hack.ioctl.c,v 1.6 1997/10/19 16:58:07 christos Exp $  */
   2
   3 /*
   4  * Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985.
   5  */
   6
   7 #include <sys/cdefs.h>
   8 #ifndef lint
   9 __RCSID("$NetBSD: hack.ioctl.c,v 1.6 1997/10/19 16:58:07 christos Exp $");
  10 #endif                          /* not lint */
  11
  12 /*
  13  * This cannot be part of hack.tty.c (as it was earlier) since on some
  14  * systems (e.g. MUNIX) the include files <termio.h> and <sgtty.h> define the
  15  * same constants, and the C preprocessor complains.
  16  */
  17 #include <termios.h>
  18 #include "hack.h"
  19 #include "extern.h"
  20 struct termios  termios;
  21
  22 void
  23 getioctls()
  24 {
  25         (void) tcgetattr(fileno(stdin), &termios);
  26 }
  27
  28 void
  29 setioctls()
  30 {
  31         (void) tcsetattr(fileno(stdin), TCSADRAIN, &termios);
  32 }
  33
  34 #ifdef SUSPEND                  /* implies BSD */
  35 #include        <signal.h>
  36 int
  37 dosuspend()
  38 {
  39 #ifdef SIGTSTP
  40         if (signal(SIGTSTP, SIG_IGN) == SIG_DFL) {
  41                 settty((char *) 0);
  42                 (void) signal(SIGTSTP, SIG_DFL);
  43                 (void) kill(0, SIGTSTP);
  44                 gettty();
  45                 setftty();
  46                 docrt();
  47         } else {
  48                 pline("I don't think your shell has job control.");
  49         }
  50 #else   /* SIGTSTP */
  51         pline("Sorry, it seems we have no SIGTSTP here. Try ! or S.");
  52 #endif                          /* SIGTSTP */
  53         return (0);
  54 }
  55 #endif                          /* SUSPEND */