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/* $Id: GuestFileImpl.h $ */
/** @file
* VirtualBox Main - Guest file handling implementation.
*/
/*
* Copyright (C) 2012-2022 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* SPDX-License-Identifier: GPL-3.0-only
*/
#ifndef MAIN_INCLUDED_GuestFileImpl_h
#define MAIN_INCLUDED_GuestFileImpl_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include "VirtualBoxBase.h"
#include "EventImpl.h"
#include "GuestCtrlImplPrivate.h"
#include "GuestFileWrap.h"
class Console;
class GuestSession;
class GuestProcess;
class ATL_NO_VTABLE GuestFile :
public GuestFileWrap,
public GuestObject
{
public:
/** @name COM and internal init/term/mapping cruft.
* @{ */
DECLARE_COMMON_CLASS_METHODS(GuestFile)
int init(Console *pConsole, GuestSession *pSession, ULONG uFileID, const GuestFileOpenInfo &openInfo);
void uninit(void);
HRESULT FinalConstruct(void);
void FinalRelease(void);
/** @} */
public:
/** @name Implemented virtual methods from GuestObject.
* @{ */
int i_callbackDispatcher(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, PVBOXGUESTCTRLHOSTCALLBACK pSvcCb);
int i_onUnregister(void);
int i_onSessionStatusChange(GuestSessionStatus_T enmSessionStatus);
/** @} */
public:
/** @name Public internal methods.
* @{ */
int i_closeFile(int *pGuestRc);
EventSource *i_getEventSource(void) { return mEventSource; }
int i_onFileNotify(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, PVBOXGUESTCTRLHOSTCALLBACK pSvcCbData);
int i_onGuestDisconnected(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, PVBOXGUESTCTRLHOSTCALLBACK pSvcCbData);
int i_openFile(uint32_t uTimeoutMS, int *pGuestRc);
int i_queryInfo(GuestFsObjData &objData, int *prcGuest);
int i_readData(uint32_t uSize, uint32_t uTimeoutMS, void* pvData, uint32_t cbData, uint32_t* pcbRead);
int i_readDataAt(uint64_t uOffset, uint32_t uSize, uint32_t uTimeoutMS,
void* pvData, size_t cbData, size_t* pcbRead);
int i_seekAt(int64_t iOffset, GUEST_FILE_SEEKTYPE eSeekType, uint32_t uTimeoutMS, uint64_t *puOffset);
int i_setFileStatus(FileStatus_T fileStatus, int fileRc);
int i_waitForOffsetChange(GuestWaitEvent *pEvent, uint32_t uTimeoutMS, uint64_t *puOffset);
int i_waitForRead(GuestWaitEvent *pEvent, uint32_t uTimeoutMS, void *pvData, size_t cbData, uint32_t *pcbRead);
int i_waitForStatusChange(GuestWaitEvent *pEvent, uint32_t uTimeoutMS, FileStatus_T *pFileStatus, int *pGuestRc);
int i_waitForWrite(GuestWaitEvent *pEvent, uint32_t uTimeoutMS, uint32_t *pcbWritten);
int i_writeData(uint32_t uTimeoutMS, const void *pvData, uint32_t cbData, uint32_t *pcbWritten);
int i_writeDataAt(uint64_t uOffset, uint32_t uTimeoutMS, const void *pvData, uint32_t cbData, uint32_t *pcbWritten);
/** @} */
/** @name Static helper methods.
* @{ */
static Utf8Str i_guestErrorToString(int guestRc, const char *pcszWhat);
/** @} */
public:
/** @name Wrapped IGuestFile properties.
* @{ */
HRESULT getCreationMode(ULONG *aCreationMode);
HRESULT getEventSource(ComPtr<IEventSource> &aEventSource);
HRESULT getId(ULONG *aId);
HRESULT getInitialSize(LONG64 *aInitialSize);
HRESULT getOffset(LONG64 *aOffset);
HRESULT getStatus(FileStatus_T *aStatus);
HRESULT getFilename(com::Utf8Str &aFilename);
HRESULT getAccessMode(FileAccessMode_T *aAccessMode);
HRESULT getOpenAction(FileOpenAction_T *aOpenAction);
/** @} */
/** @name Wrapped IGuestFile methods.
* @{ */
HRESULT close();
HRESULT queryInfo(ComPtr<IFsObjInfo> &aObjInfo);
HRESULT querySize(LONG64 *aSize);
HRESULT read(ULONG aToRead,
ULONG aTimeoutMS,
std::vector<BYTE> &aData);
HRESULT readAt(LONG64 aOffset,
ULONG aToRead,
ULONG aTimeoutMS,
std::vector<BYTE> &aData);
HRESULT seek(LONG64 aOffset,
FileSeekOrigin_T aWhence,
LONG64 *aNewOffset);
HRESULT setACL(const com::Utf8Str &aAcl,
ULONG aMode);
HRESULT setSize(LONG64 aSize);
HRESULT write(const std::vector<BYTE> &aData,
ULONG aTimeoutMS,
ULONG *aWritten);
HRESULT writeAt(LONG64 aOffset,
const std::vector<BYTE> &aData,
ULONG aTimeoutMS,
ULONG *aWritten);
/** @} */
private:
/** This can safely be used without holding any locks.
* An AutoCaller suffices to prevent it being destroy while in use and
* internally there is a lock providing the necessary serialization. */
const ComObjPtr<EventSource> mEventSource;
struct Data
{
/** The file's open info. */
GuestFileOpenInfo mOpenInfo;
/** The file's initial size on open. */
uint64_t mInitialSize;
/** The current file status. */
FileStatus_T mStatus;
/** The last returned process status
* returned from the guest side. */
int mLastError;
/** The file's current offset. */
uint64_t mOffCurrent;
} mData;
};
#endif /* !MAIN_INCLUDED_GuestFileImpl_h */
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