* libs/libc/signal/sig_killpg.c
*
* SPDX-License-Identifier: Apache-2.0
*
* 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 <errno.h>
#include <signal.h>
* Public Functions
****************************************************************************/
* Name: killpg
*
* Description:
* The killpg() system call can be used to send any signal to process
* group. See kill() for further information as this is just a simple
* wrapper around the kill() function.
*
* Input Parameters:
* pgrp - The id of the process group to receive the signal.
* signo - The signal number to send. If 'signo' is zero, no signal is
* sent, but all error checking is performed.
*
* Returned Value:
* On success the signal was send and zero is returned. On error -1 is
* returned, and errno is set one of the following error numbers:
*
* EINVAL An invalid signal was specified.
* EPERM The thread does not have permission to send the
* signal to the target thread.
* ESRCH No thread could be found corresponding to that
* specified by the given thread ID
* ENOSYS Do not support sending signals to process groups.
*
****************************************************************************/
int killpg(pid_t pgrp, int signo)
{
if (pgrp <= CONFIG_SMP_NCPUS)
{
set_errno(EINVAL);
return ERROR;
}
return kill(pgrp, signo);
}