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/* Copyright (C) 1997 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, see <https://www.gnu.org/licenses/>. */
#include "../include/sane/config.h"
#include <errno.h>
#ifndef HAVE_SIGPROCMASK
#define sigprocmask SOMETHINGELSE
#include <signal.h>
#undef sigprocmask
int
sigprocmask (int how, int *new, int *old)
{
int o, n = *new;
/* FIXME: Get this working on Windows. Probably should move to
* POSIX sigaction API and emulate it before emulating this one.
*/
#ifndef WIN32
switch (how)
{
case 1: o = sigblock (n); break;
case 2: o = sigsetmask (sigblock (0) & ~n); break;
case 3: o = sigsetmask (n); break;
default:
errno = EINVAL;
return -1;
}
if (old)
*old = o;
#endif
return 0;
}
#endif /* !HAVE_SIGPROCMASK */
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