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/* Copyright (C) 1993, 1995, 1997, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by David Mosberger (davidm@azstarnet.com).
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <features.h>
#include <errno.h>
#include <sys/syscall.h>
#include <signal.h>
#include <string.h>
/* When there is kernel support for more than 64 signals, we'll have to
switch to a new system call convention here. */
static __inline__ _syscall2(int, osf_sigprocmask, int, how, unsigned long int, setval)
/* libc_hidden_proto(sigprocmask) */
int
sigprocmask (int how, const sigset_t *set, sigset_t *oset)
{
unsigned long int setval;
long result;
if (set)
setval = set->__val[0];
else
{
setval = 0;
how = SIG_BLOCK; /* ensure blocked mask doesn't get changed */
}
result = osf_sigprocmask(how, setval);
if (result == -1)
/* If there are ever more than 64 signals, we need to recode this
in assembler since we wouldn't be able to distinguish a mask of
all 1s from -1, but for now, we're doing just fine... */
return result;
if (oset)
{
if (_SIGSET_NWORDS == 2) /* typical */
oset->__val[1] = 0;
if (_SIGSET_NWORDS > 2)
memset(oset, 0, sizeof(*oset));
oset->__val[0] = result;
}
return 0;
}
libc_hidden_def(sigprocmask)
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