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/* Copyright (C) 1993 Free Software Foundation, Inc.

This file is part of the GNU C Library.

The GNU C Library is free software; you can redistribute it and/or

modify it under the terms of the GNU Library General Public License as

published by the Free Software Foundation; either version 2 of the

License, or (at your option) any later version.

The GNU C Library 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

Library General Public License for more details.

You should have received a copy of the GNU Library General Public

License along with the GNU C Library; see the file COPYING.LIB.  If

not, write to the Free Software Foundation, Inc., 675 Mass Ave,

Cambridge, MA 02139, USA.  */

#include <ansidecl.h>

#include <errno.h>

#include <signal.h>

/* Get the mask of blocked signals.  */

int siggetmask()

{

  sigset_t oset;

  register int sig;

  int mask;

  if (sigprocmask(SIG_SETMASK, 0, &oset) < 0)

    return -1;

  if (sizeof (mask) == sizeof (oset))

    mask = oset;

  else

    {

      mask = 0;

      for (sig = 1; sig < NSIG; ++sig)

        if (sigismember(&oset, sig) == 1)

          mask |= sigmask(sig);

    }

  return mask;

}