/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup POSIXAPI
*
* @brief Examine and/or change the calling thread's signal mask
*/
/*
* 3.3.5 Examine and Change Blocked Signals, P1003.1b-1993, p. 73
*
* NOTE: P1003.1c/D10, p. 37 adds pthread_sigmask().
*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <pthread.h>
#include <signal.h>
#include <errno.h>
#include <rtems/posix/pthreadimpl.h>
#include <rtems/posix/psignalimpl.h>
#include <rtems/seterr.h>
int pthread_sigmask(
int how,
const sigset_t *__restrict set,
sigset_t *__restrict oset
)
{
POSIX_API_Control *api;
if ( !set && !oset )
rtems_set_errno_and_return_minus_one( EINVAL );
api = _Thread_Get_executing()->API_Extensions[ THREAD_API_POSIX ];
if ( oset )
*oset = ~api->signals_unblocked;
if ( !set )
return 0;
switch ( how ) {
case SIG_BLOCK:
api->signals_unblocked &= ~*set;
break;
case SIG_UNBLOCK:
api->signals_unblocked |= *set;
break;
case SIG_SETMASK:
api->signals_unblocked = ~*set;
break;
default:
rtems_set_errno_and_return_minus_one( EINVAL );
}
/* XXX are there critical section problems here? */
/* XXX evaluate the new set */
if ( api->signals_unblocked &
(api->signals_pending | _POSIX_signals_Pending) ) {
_Thread_Dispatch();
}
return 0;
}
