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/* Copyright (C) 1997-2020 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 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 <signal.h>
#include <nptl/pthreadP.h> /* SIGCANCEL, SIGSETXID */
/* Get and/or change the set of blocked signals. */
int
__sigprocmask (int how, const sigset_t *set, sigset_t *oset)
{
sigset_t local_newmask;
/* The only thing we have to make sure here is that SIGCANCEL and
SIGSETXID are not blocked. */
if (set != NULL
&& __glibc_unlikely (__sigismember (set, SIGCANCEL)
|| __glibc_unlikely (__sigismember (set, SIGSETXID))))
{
local_newmask = *set;
__sigdelset (&local_newmask, SIGCANCEL);
__sigdelset (&local_newmask, SIGSETXID);
set = &local_newmask;
}
return INLINE_SYSCALL_CALL (rt_sigprocmask, how, set, oset, _NSIG / 8);
}
libc_hidden_def (__sigprocmask)
weak_alias (__sigprocmask, sigprocmask)
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