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/* $Id: VBoxVideoErr.h $ */
/** @file
* VirtualBox Video driver, common code - iprt and VirtualBox macros and
* definitions.
*/
/*
* Copyright (C) 2017-2024 Oracle and/or its affiliates.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef VBOX_INCLUDED_Graphics_VBoxVideoErr_h
#define VBOX_INCLUDED_Graphics_VBoxVideoErr_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
/** @name VirtualBox error macros
* @{ */
#define VINF_SUCCESS 0
#define VERR_INVALID_PARAMETER (-2)
#define VERR_INVALID_POINTER (-6)
#define VERR_NO_MEMORY (-8)
#define VERR_NOT_IMPLEMENTED (-12)
#define VERR_INVALID_FUNCTION (-36)
#define VERR_NOT_SUPPORTED (-37)
#define VERR_TOO_MUCH_DATA (-42)
#define VERR_NOT_FOUND (-78)
#define VERR_INVALID_STATE (-79)
#define VERR_OUT_OF_RESOURCES (-80)
#define VERR_ALREADY_EXISTS (-105)
#define VERR_INTERNAL_ERROR (-225)
#define RT_SUCCESS_NP(rc) ( (int)(rc) >= VINF_SUCCESS )
#define RT_SUCCESS(rc) ( likely(RT_SUCCESS_NP(rc)) )
#define RT_FAILURE(rc) ( unlikely(!RT_SUCCESS_NP(rc)) )
/** @} */
/** @name VirtualBox assertions
* @{ */
/* Unlike BUILD_BUG_ON(), these can be used outside of functions. */
extern int vbox_assert_var[1];
#define assert_compile(expr) \
extern int vbox_assert_var[1] __attribute__((__unused__)), \
vbox_assert_var[(expr) ? 1 : 0] __attribute__((__unused__))
#define assert_compile_size(type, size) \
assert_compile(sizeof(type) == (size))
#define assert_ptr_return(ptr,ret) \
do { if (unlikely(!(ptr))) { WARN_ON_ONCE(!(ptr)); return ret; } } while (0)
/** @} */
/** @def RT_BCOPY_UNFORTIFIED
* For copying a number of bytes from/to variable length structures.
*
* This is for working around false positives ("field-spanning writes") in the
* linux kernel's fortified memcpy (v5.18+) when copying from/to
* RT_FLEXIBLE_ARRAY fields and similar tricks going beyond the strict
* definition of a target or source structure.
*
* @param a_pDst Pointer to the destination buffer.
* @param a_pSrc Pointer to the source buffer.
* @param a_cbToCopy Number of bytes to copy.
* @see @bugref{10209}, @ticketref{21410}
*/
#if defined(RT_OS_LINUX) && defined(__KERNEL__)
/* The definition of RT_BCOPY_UNFORTIFIED macro originally comes from IPRT
* header file. However, due to vboxvideo (Linux/DRM module) implementation,
* those header files cannot be used directly. Therefore, let's duplicate this
* definition here. Following vbox_drv.h header file is a part of
* vboxvideo sources, so this code block is only intended to be used from there. */
# include "vbox_drv.h"
# if (RTLNX_VER_MIN(5,18,0) || RTLNX_RHEL_RANGE(9,3, 9,99)) \
&& !defined(__NO_FORTIFY) \
&& defined(__OPTIMIZE__) \
&& defined(CONFIG_FORTIFY_SOURCE)
# define RT_BCOPY_UNFORTIFIED(a_pDst, a_pSrc, a_cbToCopy) __underlying_memcpy((a_pDst), (a_pSrc), (a_cbToCopy))
# else
# define RT_BCOPY_UNFORTIFIED(a_pDst, a_pSrc, a_cbToCopy) memcpy((a_pDst), (a_pSrc), (a_cbToCopy))
# endif
#else /* !RT_OS_LINUX && !__KERNEL__ */
# define RT_BCOPY_UNFORTIFIED(a_pDst, a_pSrc, a_cbToCopy) memcpy((a_pDst), (a_pSrc), (a_cbToCopy))
#endif /* !RT_OS_LINUX && !__KERNEL__ */
#endif /* !VBOX_INCLUDED_Graphics_VBoxVideoErr_h */
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