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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup RTEMSImplApplConfig
*
* @brief This header file evaluates configuration options related to
* the FACE Technical Standard.
*
* The FACE Technical Standard (https://opengroup.org/face) is an
* open standard designed for safety critical embedded systems. It
* includes POSIX profiles and requirements that promote safety
* and portability. As a general rules, the profiles place a minimum
* on the services which an operating system must provide. Those
* same profile definitions represent the maximum services which
* an application may use.
*/
/*
* Copyright (C) 2022 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.
*/
#ifndef _RTEMS_CONFDEFS_FACE_H
#define _RTEMS_CONFDEFS_FACE_H
#ifndef __CONFIGURATION_TEMPLATE_h
#error "Do not include this file directly, use <rtems/confdefs.h> instead"
#endif
#ifdef CONFIGURE_INIT
#ifdef CONFIGURE_POSIX_TIMERS_FACE_BEHAVIOR
#include <rtems/posix/timer.h>
int _POSIX_Timer_Is_allowed(
clockid_t clock_id
)
{
/*
* Per the FACE Technical Standard, POSIX timers should not be
* allowed on CLOCK_REALTIME for safety reasons. If the application
* wants the FACE behavior, then this method is instantiated.
*/
if ( clock_id == CLOCK_REALTIME ) {
return EPERM;
}
if ( clock_id != CLOCK_MONOTONIC ) {
return EINVAL;
}
return 0;
}
#endif /* CONFIGURE_POSIX_TIMERS_FACE_BEHAVIOR */
#endif /* CONFIGURE_INIT */
#endif /* _RTEMS_CONFDEFS_FACE_H */
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