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/* Copyright (C) 1991-2024 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 <errno.h>
#include <signal.h>
#include <sigsetops.h>
#include <internal-signals.h>
/* Add SIGNO to SET. */
int
sigaddset (sigset_t *set, int signo)
{
if (set == NULL || signo <= 0 || signo >= NSIG
|| is_internal_signal (signo))
{
__set_errno (EINVAL);
return -1;
}
__sigaddset (set, signo);
return 0;
}
libc_hidden_def (sigaddset)
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