/*
* Copyright (c) 2017 CZ.NIC, z.s.p.o.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/*
* Authors:
* Jiří Zárevúcky (jzr) <zarevucky.jiri@gmail.com>
*/
/** @addtogroup bits
* @{
*/
/** @file
*/
#ifndef _BITS_ERRNO_H_
#define _BITS_ERRNO_H_
#include <_bits/native.h>
#include <_bits/decls.h>
#ifdef __OPAQUE_ERRNO__
#include <_bits/__opaque_handle.h>
__HELENOS_DECLS_BEGIN;
__opaque_handle(errno_t);
typedef errno_t sys_errno_t;
__HELENOS_DECLS_END;
#define __errno_t(val) ((errno_t) val)
#else
__HELENOS_DECLS_BEGIN;
/**
* The type of <errno.h> constants. Normally, this is an alias for `int`,
* but we support an alternative definition that allows us to verify
* integrity of error handling without using external tools.
*/
typedef int errno_t;
/**
* Same as `errno_t`, except represented as `sysarg_t`. Used in kernel in
* places where error number is always passed, but the type must be `sysarg_t`.
*/
typedef sysarg_t sys_errno_t;
__HELENOS_DECLS_END;
/**
* A C++-style "cast" to `errno_t`.
* Used in <abi/errno.h> to define error constants. Normally, it doesn't do
* anything at all.
*/
#define __errno_t(val) val
#endif
#endif