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| 2 | /* $Id: GuestFileImpl.h 48819 2013-10-02 13:53:34Z vboxsync $ */
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| 3 | /** @file
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| 4 | * VirtualBox Main - Guest file handling.
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| 5 | */
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| 6 |
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| 7 | /*
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| 8 | * Copyright (C) 2012-2013 Oracle Corporation
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| 9 | *
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| 10 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 11 | * available from http://www.virtualbox.org. This file is free software;
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| 12 | * you can redistribute it and/or modify it under the terms of the GNU
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| 13 | * General Public License (GPL) as published by the Free Software
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| 14 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 15 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 16 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 17 | */
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| 18 |
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| 19 | #ifndef ____H_GUESTFILEIMPL
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| 20 | #define ____H_GUESTFILEIMPL
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| 21 |
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| 22 | #include "VirtualBoxBase.h"
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| 23 | #include "EventImpl.h"
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| 24 |
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| 25 | #include "GuestFsObjInfoImpl.h"
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| 26 | #include "GuestCtrlImplPrivate.h"
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| 27 |
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| 28 | class Console;
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| 29 | class GuestSession;
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| 30 | class GuestProcess;
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| 31 |
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| 32 | /**
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| 33 | * TODO
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| 34 | */
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| 35 | class ATL_NO_VTABLE GuestFile :
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| 36 | public VirtualBoxBase,
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| 37 | public GuestObject,
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| 38 | VBOX_SCRIPTABLE_IMPL(IGuestFile)
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| 39 | {
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| 40 | public:
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| 41 | /** @name COM and internal init/term/mapping cruft.
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| 42 | * @{ */
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| 43 | VIRTUALBOXBASE_ADD_ERRORINFO_SUPPORT(GuestFile, IGuestFile)
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| 44 | DECLARE_NOT_AGGREGATABLE(GuestFile)
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| 45 | DECLARE_PROTECT_FINAL_CONSTRUCT()
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| 46 | BEGIN_COM_MAP(GuestFile)
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| 47 | VBOX_DEFAULT_INTERFACE_ENTRIES(IGuestFile)
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| 48 | COM_INTERFACE_ENTRY(IFile)
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| 49 | END_COM_MAP()
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| 50 | DECLARE_EMPTY_CTOR_DTOR(GuestFile)
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| 51 |
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| 52 | int init(Console *pConsole, GuestSession *pSession, ULONG uFileID, const GuestFileOpenInfo &openInfo);
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| 53 | void uninit(void);
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| 54 | HRESULT FinalConstruct(void);
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| 55 | void FinalRelease(void);
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| 56 | /** @} */
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| 57 |
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| 58 | /** @name IFile interface.
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| 59 | * @{ */
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| 60 | STDMETHOD(COMGETTER(CreationMode))(ULONG *aCreationMode);
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| 61 | STDMETHOD(COMGETTER(Disposition))(BSTR *aDisposition);
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| 62 | STDMETHOD(COMGETTER(EventSource))(IEventSource ** aEventSource);
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| 63 | STDMETHOD(COMGETTER(FileName))(BSTR *aFileName);
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| 64 | STDMETHOD(COMGETTER(Id))(ULONG *aID);
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| 65 | STDMETHOD(COMGETTER(InitialSize))(LONG64 *aInitialSize);
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| 66 | STDMETHOD(COMGETTER(Offset))(LONG64 *aOffset);
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| 67 | STDMETHOD(COMGETTER(OpenMode))(BSTR *aOpenMode);
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| 68 | STDMETHOD(COMGETTER(Status))(FileStatus_T *aStatus);
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| 69 |
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| 70 | STDMETHOD(Close)(void);
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| 71 | STDMETHOD(QueryInfo)(IFsObjInfo **aInfo);
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| 72 | STDMETHOD(Read)(ULONG aToRead, ULONG aTimeoutMS, ComSafeArrayOut(BYTE, aData));
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| 73 | STDMETHOD(ReadAt)(LONG64 aOffset, ULONG aToRead, ULONG aTimeoutMS, ComSafeArrayOut(BYTE, aData));
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| 74 | STDMETHOD(Seek)(LONG64 aOffset, FileSeekType_T aType);
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| 75 | STDMETHOD(SetACL)(IN_BSTR aACL);
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| 76 | STDMETHOD(Write)(ComSafeArrayIn(BYTE, aData), ULONG aTimeoutMS, ULONG *aWritten);
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| 77 | STDMETHOD(WriteAt)(LONG64 aOffset, ComSafeArrayIn(BYTE, aData), ULONG aTimeoutMS, ULONG *aWritten);
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| 78 | /** @} */
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| 79 |
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| 80 | public:
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| 81 | /** @name Public internal methods.
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| 82 | * @{ */
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| 83 | int callbackDispatcher(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, PVBOXGUESTCTRLHOSTCALLBACK pSvcCb);
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| 84 | int closeFile(int *pGuestRc);
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| 85 | EventSource *getEventSource(void) { return mEventSource; }
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| 86 | static Utf8Str guestErrorToString(int guestRc);
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| 87 | int onFileNotify(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, PVBOXGUESTCTRLHOSTCALLBACK pSvcCbData);
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| 88 | int onGuestDisconnected(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, PVBOXGUESTCTRLHOSTCALLBACK pSvcCbData);
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| 89 | int openFile(uint32_t uTimeoutMS, int *pGuestRc);
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| 90 | int readData(uint32_t uSize, uint32_t uTimeoutMS, void* pvData, uint32_t cbData, uint32_t* pcbRead);
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| 91 | int readDataAt(uint64_t uOffset, uint32_t uSize, uint32_t uTimeoutMS, void* pvData, size_t cbData, size_t* pcbRead);
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| 92 | int seekAt(int64_t iOffset, GUEST_FILE_SEEKTYPE eSeekType, uint32_t uTimeoutMS, uint64_t *puOffset);
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| 93 | static HRESULT setErrorExternal(VirtualBoxBase *pInterface, int guestRc);
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| 94 | int setFileStatus(FileStatus_T fileStatus, int fileRc);
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| 95 | int waitForOffsetChange(GuestWaitEvent *pEvent, uint32_t uTimeoutMS, uint64_t *puOffset);
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| 96 | int waitForRead(GuestWaitEvent *pEvent, uint32_t uTimeoutMS, void *pvData, size_t cbData, uint32_t *pcbRead);
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| 97 | int waitForStatusChange(GuestWaitEvent *pEvent, uint32_t uTimeoutMS, FileStatus_T *pFileStatus, int *pGuestRc);
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| 98 | int waitForWrite(GuestWaitEvent *pEvent, uint32_t uTimeoutMS, uint32_t *pcbWritten);
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| 99 | int writeData(uint32_t uTimeoutMS, void *pvData, uint32_t cbData, uint32_t *pcbWritten);
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| 100 | int writeDataAt(uint64_t uOffset, uint32_t uTimeoutMS, void *pvData, uint32_t cbData, uint32_t *pcbWritten);
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| 101 | /** @} */
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| 102 |
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| 103 | private:
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| 104 |
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| 105 | /** This can safely be used without holding any locks.
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| 106 | * An AutoCaller suffices to prevent it being destroy while in use and
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| 107 | * internally there is a lock providing the necessary serialization. */
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| 108 | const ComObjPtr<EventSource> mEventSource;
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| 109 |
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| 110 | struct Data
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| 111 | {
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| 112 | /** The file's open info. */
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| 113 | GuestFileOpenInfo mOpenInfo;
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| 114 | /** The file's initial size on open. */
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| 115 | uint64_t mInitialSize;
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| 116 | /** The file's ID. */
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| 117 | uint32_t mID;
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| 118 | /** The current file status. */
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| 119 | FileStatus_T mStatus;
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| 120 | /** The last returned process status
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| 121 | * returned from the guest side. */
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| 122 | int mLastError;
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| 123 | /** The file's current offset. */
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| 124 | uint64_t mOffCurrent;
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| 125 | } mData;
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| 126 | };
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| 127 |
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| 128 | #endif /* !____H_GUESTFILEIMPL */
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| 129 |
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