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/* Copyright (C) 1993-2019 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, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <sysdep.h>
#include <signal.h>
/* When there is kernel support for more than 64 signals, we'll have to
switch to a new system call convention here. */
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 = INLINE_SYSCALL (osf_sigprocmask, 2, how, setval);
if (result == -1)
/* If there are ever more than 63 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)
{
oset->__val[0] = result;
result = _SIGSET_NWORDS;
while (--result > 0)
oset->__val[result] = 0;
}
return 0;
}
libc_hidden_def (__sigprocmask)
weak_alias (__sigprocmask, sigprocmask);
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