/* s/ file for Unixware.

Copyright (C) 1999-2012  Free Software Foundation, Inc.

This file is part of GNU Emacs.

GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */


#include "usg5-4-common.h"

/* #define HAVE_GETWD  (appears to be buggy on SVR4.2) */
#undef HAVE_GETWD

#undef HAVE_SYSV_SIGPAUSE

/* This is the same definition as in usg5-4-common.h, but with sigblock/sigunblock
   rather than sighold/sigrelse, which appear to be BSD4.1 specific.
   It may also be appropriate for SVR4.x
   (x<2) but I'm not sure.   fnf@cygnus.com */
/* This sets the name of the slave side of the PTY.  On SysVr4,
   grantpt(3) forks a subprocess, so keep sigchld_handler() from
   intercepting that death.  If any child but grantpt's should die
   within, it should be caught after sigrelse(2).  */
#define PTY_TTY_NAME_SPRINTF			\
  {						\
    char *ptsname (int), *ptyname;		\
						\
    sigblock(sigmask(SIGCLD));			\
    if (grantpt(fd) == -1)			\
      fatal("could not grant slave pty");	\
    sigunblock(sigmask(SIGCLD));		\
    if (unlockpt(fd) == -1)			\
      fatal("could not unlock slave pty");	\
    if (!(ptyname = ptsname(fd)))		\
      fatal ("could not enable slave pty");	\
    strncpy(pty_name, ptyname, sizeof(pty_name)); \
    pty_name[sizeof(pty_name) - 1] = 0;		\
  }

#define	PENDING_OUTPUT_COUNT(FILE) ((FILE)->__ptr - (FILE)->__base)

/* Conservative garbage collection has not been tested, so for now
   play it safe and stick with the old-fashioned way of marking.  */
#define GC_MARK_STACK GC_USE_GCPROS_AS_BEFORE