diff --git a/sys/share/ioctl.c b/sys/share/ioctl.c
new file mode 100644
index 000000000..61c5e1e8f
--- /dev/null
+++ b/sys/share/ioctl.c
@@ -0,0 +1,187 @@
+/*	SCCS Id: @(#)ioctl.c	3.3	90/22/02 */
+/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
+/* NetHack may be freely redistributed.  See license for details. */
+
+/* This cannot be part of hack.tty.c (as it was earlier) since on some
+   systems (e.g. MUNIX) the include files <termio.h> and <sgtty.h>
+   define the same constants, and the C preprocessor complains. */
+
+#include "hack.h"
+
+#if defined(BSD_JOB_CONTROL) || defined(_BULL_SOURCE)
+# ifdef HPUX
+#include <bsdtty.h>
+# else
+#  if defined(AIX_31) && !defined(_ALL_SOURCE)
+#   define _ALL_SOURCE	/* causes struct winsize to be present */
+#   ifdef _AIX32
+#    include <sys/ioctl.h>
+#   endif
+#  endif
+#  if defined(_BULL_SOURCE)
+#   include <termios.h>
+struct termios termio;
+#   undef TIMEOUT		/* defined in you.h and sys/tty.h */
+#   include <sys/tty.h>		/* define winsize */
+#   include <sys/ttold.h>	/* define struct ltchars */
+#   include <sys/bsdioctl.h>	/* define TIOGWINSZ */
+#  else
+#   ifdef LINUX
+#    include <bsd/sgtty.h>
+#   else
+#    include <sgtty.h>
+#   endif
+#  endif
+# endif
+struct ltchars ltchars;
+struct ltchars ltchars0 = { -1, -1, -1, -1, -1, -1 }; /* turn all off */
+#else
+
+# ifdef POSIX_TYPES
+#include <termios.h>
+struct termios termio;
+#  if defined(BSD) || defined(_AIX32)
+#   if defined(_AIX32) && !defined(_ALL_SOURCE)
+#    define _ALL_SOURCE
+#   endif
+#include <sys/ioctl.h>
+#  endif
+# else
+#include <termio.h>	/* also includes part of <sgtty.h> */
+#  if defined(TCSETS) && !defined(AIX_31)
+struct termios termio;
+#  else
+struct termio termio;
+#  endif
+# endif
+# ifdef AMIX
+#include <sys/ioctl.h>
+# endif /* AMIX */
+#endif
+
+#ifdef SUSPEND	/* BSD isn't alone anymore... */
+#include	<signal.h>
+#endif
+
+#if defined(TIOCGWINSZ) && (defined(BSD) || defined(ULTRIX) || defined(AIX_31) || defined(_BULL_SOURCE) || defined(SVR4))
+#define USE_WIN_IOCTL
+#include "tcap.h"	/* for LI and CO */
+#endif
+
+#ifdef _M_UNIX
+extern void NDECL(sco_mapon);
+extern void NDECL(sco_mapoff);
+#endif
+#ifdef __linux__
+extern void NDECL(linux_mapon);
+extern void NDECL(linux_mapoff);
+#endif
+
+#ifdef AUX
+void
+catch_stp()
+{
+    signal(SIGTSTP, SIG_DFL);
+    dosuspend();
+}
+#endif /* AUX */
+
+void
+getwindowsz()
+{
+#ifdef USE_WIN_IOCTL
+    /*
+     * ttysize is found on Suns and BSD
+     * winsize is found on Suns, BSD, and Ultrix
+     */
+    struct winsize ttsz;
+
+    if (ioctl(fileno(stdin), (int)TIOCGWINSZ, (char *)&ttsz) != -1) {
+	/*
+	 * Use the kernel's values for lines and columns if it has
+	 * any idea.
+	 */
+	if (ttsz.ws_row)
+	    LI = ttsz.ws_row;
+	if (ttsz.ws_col)
+	    CO = ttsz.ws_col;
+    }
+#endif
+}
+
+void
+getioctls()
+{
+#ifdef BSD_JOB_CONTROL
+	(void) ioctl(fileno(stdin), (int) TIOCGLTC, (char *) &ltchars);
+	(void) ioctl(fileno(stdin), (int) TIOCSLTC, (char *) &ltchars0);
+#else
+# ifdef POSIX_TYPES
+	(void) tcgetattr(fileno(stdin), &termio);
+# else
+#  if defined(TCSETS) && !defined(AIX_31)
+	(void) ioctl(fileno(stdin), (int) TCGETS, &termio);
+#  else
+	(void) ioctl(fileno(stdin), (int) TCGETA, &termio);
+#  endif
+# endif
+#endif
+	getwindowsz();
+#ifdef AUX
+	( void ) signal ( SIGTSTP , catch_stp ) ;
+#endif
+}
+
+void
+setioctls()
+{
+#ifdef BSD_JOB_CONTROL
+	(void) ioctl(fileno(stdin), (int) TIOCSLTC, (char *) &ltchars);
+#else
+# ifdef POSIX_TYPES
+	(void) tcsetattr(fileno(stdin), TCSADRAIN, &termio);
+# else
+#  if defined(TCSETS) && !defined(AIX_31)
+	(void) ioctl(fileno(stdin), (int) TCSETSW, &termio);
+#  else
+	(void) ioctl(fileno(stdin), (int) TCSETAW, &termio);
+#  endif
+# endif
+#endif
+}
+
+#ifdef SUSPEND		/* No longer implies BSD */
+int
+dosuspend()
+{
+# ifdef SIGTSTP
+	if(signal(SIGTSTP, SIG_IGN) == SIG_DFL) {
+		suspend_nhwindows((char *)0);
+#  ifdef _M_UNIX
+		sco_mapon();
+#  endif
+#  ifdef __linux__
+		linux_mapon();
+#  endif
+		(void) signal(SIGTSTP, SIG_DFL);
+#  ifdef AUX
+		( void ) kill ( 0 , SIGSTOP ) ;
+#  else
+		(void) kill(0, SIGTSTP);
+#  endif
+#  ifdef _M_UNIX
+		sco_mapoff();
+#  endif
+#  ifdef __linux__
+		linux_mapoff();
+#  endif
+		resume_nhwindows();
+	} else {
+		pline("I don't think your shell has job control.");
+	}
+# else
+	pline("Sorry, it seems we have no SIGTSTP here.  Try ! or S.");
+# endif
+	return(0);
+}
+#endif /* SUSPEND */