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signal: add siginterrupt implementation

Browse Source 
https://pubs.opengroup.org/onlinepubs/9699919799/functions/siginterrupt.html

Signed-off-by: fangxinyong <fangxinyong@xiaomi.com>
This commit is contained in:
fangxinyong 2023-08-28 20:55:45 +08:00 committed by Xiang Xiao
parent 006b86f47c
commit 946ede865d
4 changed files with 72 additions and 1 deletions
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1
include/signal.h
View File

@ -452,6 +452,7 @@ int sigtimedwait(FAR const sigset_t *set, FAR struct siginfo *value,
int sigsuspend(FAR const sigset_t *sigmask);
int sigwaitinfo(FAR const sigset_t *set, FAR struct siginfo *value);
int sigaltstack(FAR const stack_t *ss, FAR stack_t *oss);
int siginterrupt(int signo, int flag);
#undef EXTERN
#ifdef __cplusplus

1
libs/libc/signal/CMakeLists.txt
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@ -29,6 +29,7 @@ target_sources(
sig_orset.c
sig_xorset.c
sig_isemptyset.c
sig_interrupt.c
sig_hold.c
sig_ignore.c
sig_ismember.c

2
libs/libc/signal/Make.defs
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@ -22,7 +22,7 @@
CSRCS += sig_addset.c sig_delset.c sig_emptyset.c sig_fillset.c
CSRCS += sig_nandset.c sig_andset.c sig_orset.c sig_xorset.c
CSRCS += sig_isemptyset.c sig_killpg.c sig_altstack.c
CSRCS += sig_isemptyset.c sig_killpg.c sig_altstack.c sig_interrupt.c
CSRCS += sig_hold.c sig_ignore.c sig_ismember.c sig_pause.c sig_psignal.c
CSRCS += sig_raise.c sig_relse.c sig_set.c sig_signal.c sig_wait.c

69
libs/libc/signal/sig_interrupt.c Normal file
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@ -0,0 +1,69 @@
/****************************************************************************
* libs/libc/signal/sig_interrupt.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <signal.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: siginterrupt
*
* Description:
* The siginterrupt() function allows signals to interrupt functions
*
* Input Parameters:
* signo - Signal to interrupt functions
* flag - Flag to get restarting signal
*
* Returned Value:
* Upon successful completion, siginterrupt() shall return 0;
* otherwise, -1 shall be returned and errno set to indicate the error.
*
* EINVAL - The signo argument is invalid.
****************************************************************************/
int siginterrupt(int signo, int flag)
{
struct sigaction act;
if (sigaction(signo, NULL, &act) < 0)
{
return ERROR;
}
if (flag)
{
act.sa_flags &= ~SA_RESTART;
}
else
{
act.sa_flags |= SA_RESTART;
}
return sigaction(signo, &act, NULL);
}