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/** @file
* PDM - Pluggable Device Manager, EFI NVRAM storage back-end.
*/
/*
* Copyright (C) 2012-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
#ifndef VBOX_INCLUDED_vmm_pdmnvram_h
#define VBOX_INCLUDED_vmm_pdmnvram_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <VBox/types.h>
RT_C_DECLS_BEGIN
/** @defgroup grp_pdm_ifs_nvram NVRAM Interface
* @ingroup grp_pdm_interfaces
* @{
*/
/** Pointer to NVRAM interface provided by the driver. */
typedef struct PDMINVRAMCONNECTOR *PPDMINVRAMCONNECTOR;
/**
* Non-volatile RAM storage interface provided by the driver (up).
*
* @note The variable indexes used here 0-based, sequential and without gaps.
*/
typedef struct PDMINVRAMCONNECTOR
{
/**
* Query a variable by variable index.
*
* @returns VBox status code.
* @retval VERR_NOT_FOUND if the variable was not found. This indicates that
* there are not variables with a higher index.
*
* @param pInterface Pointer to this interface structure.
* @param idxVariable The variable index. By starting @a idxVariable at 0
* and increasing it with each call, this can be used
* to enumerate all available variables.
* @param pVendorUuid The vendor UUID of the variable.
* @param pszName The variable name buffer.
* @param pcchName On input this hold the name buffer size (including
* the space for the terminator char). On successful
* return it holds the strlen() value for @a pszName.
* @param pfAttributes Where to return the value attributes.
* @param pbValue The value buffer.
* @param pcbValue On input the size of the value buffer, on output the
* actual number of bytes returned.
*/
DECLR3CALLBACKMEMBER(int, pfnVarQueryByIndex,(PPDMINVRAMCONNECTOR pInterface, uint32_t idxVariable,
PRTUUID pVendorUuid, char *pszName, uint32_t *pcchName,
uint32_t *pfAttributes, uint8_t *pbValue, uint32_t *pcbValue));
/**
* Begins variable store sequence.
*
* @returns VBox status code.
* @param pInterface Pointer to this interface structure.
* @param cVariables The number of variables.
*/
DECLR3CALLBACKMEMBER(int, pfnVarStoreSeqBegin,(PPDMINVRAMCONNECTOR pInterface, uint32_t cVariables));
/**
* Puts the next variable in the store sequence.
*
* @returns VBox status code.
* @param pInterface Pointer to this interface structure.
* @param idxVariable The variable index. This will start at 0 and advance
* up to @a cVariables - 1.
* @param pVendorUuid The vendor UUID of the variable.
* @param pszName The variable name buffer.
* @param cchName On input this hold the name buffer size (including
* the space for the terminator char). On successful
* return it holds the strlen() value for @a pszName.
* @param fAttributes The value attributes.
* @param pbValue The value buffer.
* @param cbValue On input the size of the value buffer, on output the
* actual number of bytes returned.
*/
DECLR3CALLBACKMEMBER(int, pfnVarStoreSeqPut,(PPDMINVRAMCONNECTOR pInterface, int idxVariable,
PCRTUUID pVendorUuid, const char *pszName, size_t cchName,
uint32_t fAttributes, uint8_t const *pbValue, size_t cbValue));
/**
* Ends a variable store sequence.
*
* @returns VBox status code, @a rc on success.
* @param pInterface Pointer to this interface structure.
* @param rc The VBox status code for the whole store operation.
*/
DECLR3CALLBACKMEMBER(int, pfnVarStoreSeqEnd,(PPDMINVRAMCONNECTOR pInterface, int rc));
} PDMINVRAMCONNECTOR;
/** PDMINVRAMCONNECTOR interface ID. */
#define PDMINVRAMCONNECTOR_IID "057bc5c9-8022-43a8-9a41-0b106f97a89f"
/** @} */
RT_C_DECLS_END
#endif /* !VBOX_INCLUDED_vmm_pdmnvram_h */
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