70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
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/****************************************************************************
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* libs/libc/signal/sig_interrupt.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <signal.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: siginterrupt
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*
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* Description:
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* The siginterrupt() function allows signals to interrupt functions
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*
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* Input Parameters:
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* signo - Signal to interrupt functions
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* flag - Flag to get restarting signal
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*
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* Returned Value:
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* Upon successful completion, siginterrupt() shall return 0;
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* otherwise, -1 shall be returned and errno set to indicate the error.
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*
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* EINVAL - The signo argument is invalid.
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****************************************************************************/
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int siginterrupt(int signo, int flag)
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{
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struct sigaction act;
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if (sigaction(signo, NULL, &act) < 0)
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{
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return ERROR;
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}
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if (flag)
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{
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act.sa_flags &= ~SA_RESTART;
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}
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else
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{
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act.sa_flags |= SA_RESTART;
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}
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return sigaction(signo, &act, NULL);
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}
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