1/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#include <errno.h>
19#include <signal.h>
20#include <internal-signals.h>
21
22/* If ACT is not NULL, change the action for SIG to *ACT.
23 If OACT is not NULL, put the old action for SIG in *OACT. */
24int
25__sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
26{
27 if (sig <= 0 || sig >= NSIG || is_internal_signal (sig))
28 {
29 __set_errno (EINVAL);
30 return -1;
31 }
32
33 return __libc_sigaction (sig, act, oact);
34}
35libc_hidden_def (__sigaction)
36weak_alias (__sigaction, sigaction)
37