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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 <internal-signals.h>
#include <libc-lock.h>
#include <signal.h>
/* If ACT is not NULL, change the action for SIG to *ACT.
If OACT is not NULL, put the old action for SIG in *OACT. */
int
__sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
{
if (sig <= 0 || sig >= NSIG || is_internal_signal (sig))
{
__set_errno (EINVAL);
return -1;
}
internal_sigset_t set;
if (sig == SIGABRT)
__abort_lock_wrlock (&set);
int r = __libc_sigaction (sig, act, oact);
if (sig == SIGABRT)
__abort_lock_unlock (&set);
return r;
}
libc_hidden_def (__sigaction)
weak_alias (__sigaction, sigaction)
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