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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,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
#include <signal.h>
#include <unistd.h>
extern int __syscall_sigpending (sigset_t *);
extern int __syscall_rt_sigpending (sigset_t *, size_t);
/* The variable is shared between all wrappers around signal handling
functions which have RT equivalents. It is defined in sigsuspend.c. */
extern int __libc_have_rt_sigs;
/* Change the set of blocked signals to SET,
wait until a signal arrives, and restore the set of blocked signals. */
int
sigpending (set)
sigset_t *set;
{
/* First try the RT signals. */
if (__libc_have_rt_sigs)
{
/* XXX The size argument hopefully will have to be changed to the
real size of the user-level sigset_t. */
int result = __syscall_rt_sigpending (set, _NSIG / 8);
if (result >= 0 || errno != ENOSYS)
return result;
__libc_have_rt_sigs = 0;
}
return __syscall_sigpending (set);
}
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