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131 lines
3.7 KiB
131 lines
3.7 KiB
//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1998-1999.
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//
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// File: DrvNotif.hxx
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//
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// Contents: This file contains a class that keeps the information of a
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// volume which is registered for device notification.
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//
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// History: 23-Jun-98 KitmanH Created
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//
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//--------------------------------------------------------------------------
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#pragma once
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enum eCiSvcVolState
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{
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eVolReady,
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eVolLocked
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};
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//+-------------------------------------------------------------------------
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//
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// Function: IsRemovableDrive
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//
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// Synopsis: Checks if a drive is removable or cd-rom/dvd
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//
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// Arguments: [wc] - Dirve letter
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//
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// Returns: TRUE if removable, FALSE otherwise
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//
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// History: 1-Apr-99 dlee Created
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//
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//--------------------------------------------------------------------------
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inline BOOL IsRemovableDrive( WCHAR wc )
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{
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WCHAR awc[4];
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wcscpy( awc, L"C:\\" );
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awc[0] = wc;
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UINT uiRC = GetDriveType( awc );
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return ( DRIVE_REMOVABLE == uiRC || DRIVE_CDROM == uiRC );
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} //IsRemovableDrive
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//+---------------------------------------------------------------------------
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//
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// Class: CDrvNotificationInfo
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//
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// Purpose: Maintains the info for a volume regarding receiving
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// notificaitons
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//
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// History: 06/23/98 KitmanH created
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//
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//----------------------------------------------------------------------------
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class CDrvNotificationInfo
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{
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public:
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CDrvNotificationInfo( WCHAR wcDriveLetter, BOOL fAutoMountMode = FALSE );
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~CDrvNotificationInfo();
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BOOL RegisterNotification();
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void UnregisterNotification();
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BOOL Touch();
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WCHAR GetDrvLetter() const { return (WCHAR) toupper( _wcDriveLetter ); }
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HDEVNOTIFY const GethNotify() { return _hNotify; }
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void AddOldState( DWORD dwOldState, WCHAR * wcsCatName );
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DWORD * GetOldState( WCHAR * wcsCatName ) const;
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DWORD GetVolState() const { return _dwVolState; }
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void SetVolState( DWORD dwVolState )
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{
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// no lock needed, since it's only called in service control
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// which can has no contender
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_dwVolState = dwVolState;
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}
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void ClearOldStateArray();
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void CloseVolumeHandle()
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{
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if ( INVALID_HANDLE_VALUE != _hVol )
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{
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CloseHandle( _hVol );
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_hVol = INVALID_HANDLE_VALUE;
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}
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}
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DWORD GetLockAttempts() const { return _cLockAttempts; }
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void IncLockAttempts() { _cLockAttempts++; }
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void DecLockAttempts() { _cLockAttempts--; }
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void ResetLockAttempts() { _cLockAttempts = 0; }
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BOOL IsAutoMount() const { return _fAutoMountMode; }
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BOOL IsRemovable() const { return DRIVE_REMOVABLE == _uiDriveType ||
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DRIVE_CDROM == _uiDriveType; }
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BOOL IsCDROM() const { return DRIVE_CDROM == _uiDriveType; }
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BOOL IsRegistered() const { return INVALID_HANDLE_VALUE != _hNotify; }
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private:
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BOOL ReallyTouch();
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BOOL GetVolumeHandle();
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HANDLE _hVol;
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HDEVNOTIFY _hNotify;
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WCHAR _wcDriveLetter;
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DWORD _dwVolState; // is the drive dismounted or locked
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DWORD _cLockAttempts; // how many times a volume lock is attempted
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BOOL _fAutoMountMode;
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UINT _uiDriveType;
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};
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