1 /*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include <signal.h>
17 #include <errno.h>
18
19 extern int __libc_sigaction(int sig, const struct sigaction *restrict sa, struct sigaction *restrict old);
20
siginterrupt(int sig, int flag)21 int siginterrupt(int sig, int flag)
22 {
23 if (sig-32U < 3 || sig-1U >= _NSIG-1) {
24 errno = EINVAL;
25 return -1;
26 }
27 struct sigaction sa;
28
29 __libc_sigaction(sig, 0, &sa);
30 if (flag) sa.sa_flags &= ~SA_RESTART;
31 else sa.sa_flags |= SA_RESTART;
32
33 return __libc_sigaction(sig, &sa, 0);
34 }
35