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/* $Id$ */
/** @file
* VBox storage devices: Host block device management API.
*/
/*
* Copyright (C) 2015-2022 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.
*/
#ifndef VBOX_INCLUDED_SRC_Storage_HBDMgmt_h
#define VBOX_INCLUDED_SRC_Storage_HBDMgmt_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <VBox/cdefs.h>
RT_C_DECLS_BEGIN
/**
* Opaque host block device manager.
*/
typedef struct HBDMGRINT *HBDMGR;
/** Pointer to a block device manager. */
typedef HBDMGR *PHBDMGR;
/* NIL HBD manager handle. */
#define NIL_HBDMGR ((HBDMGR)0)
/**
* Creates host block device manager.
*
* @returns VBox status code.
* @param phHbdMgr Where to store the handle to the block device manager on success.
*/
DECLHIDDEN(int) HBDMgrCreate(PHBDMGR phHbdMgr);
/**
* Destroys the given block device manager unclaiming all managed block devices.
*
* @returns nothing.
* @param hHbdMgr The block device manager.
*/
DECLHIDDEN(void) HBDMgrDestroy(HBDMGR hHbdMgr);
/**
* Returns whether a given filename resembles a block device which can
* be managed by this API.
*
* @returns true if the given filename point to a block device manageable
* by the given manager
* false otherwise.
* @param pszFilename The block device to check.
*/
DECLHIDDEN(bool) HBDMgrIsBlockDevice(const char *pszFilename);
/**
* Prepares the given block device for use by unmounting and claiming it for exclusive use.
*
* @returns VBox status code.
* @param hHbdMgr The block device manager.
* @param pszFilename The block device to claim.
*/
DECLHIDDEN(int) HBDMgrClaimBlockDevice(HBDMGR hHbdMgr, const char *pszFilename);
/**
* Unclaims the given block device.
*
* @returns VBox status code.
* @param hHbdMgr The block device manager.
* @param pszFilename The block device to unclaim.
*/
DECLHIDDEN(int) HBDMgrUnclaimBlockDevice(HBDMGR hHbdMgr, const char *pszFilename);
/**
* Returns whether the given block device is claimed by the manager.
*
* @returns true if the block device is claimed, false otherwisw.
* @param hHbdMgr The block device manager.
* @param pszFilename The block device to check.
*/
DECLHIDDEN(bool) HBDMgrIsBlockDeviceClaimed(HBDMGR hHbdMgr, const char *pszFilename);
RT_C_DECLS_END
#endif /* !VBOX_INCLUDED_SRC_Storage_HBDMgmt_h */
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