BtrfsIconOverlay Class Reference

#include <iconoverlay.h>

Inheritance diagram for BtrfsIconOverlay:

Collaboration diagram for BtrfsIconOverlay:

Public Member Functions
	BtrfsIconOverlay ()
virtual	~BtrfsIconOverlay ()
HRESULT __stdcall	QueryInterface (REFIID riid, void **ppObj)
ULONG __stdcall	AddRef ()
ULONG __stdcall	Release ()
virtual HRESULT __stdcall	GetOverlayInfo (PWSTR pwszIconFile, int cchMax, int *pIndex, DWORD *pdwFlags) noexcept
virtual HRESULT __stdcall	GetPriority (int *pPriority) noexcept
virtual HRESULT __stdcall	IsMemberOf (PCWSTR pwszPath, DWORD dwAttrib) noexcept

Private Attributes
LONG	refcount

Detailed Description

Definition at line 24 of file iconoverlay.h.

Constructor & Destructor Documentation

BtrfsIconOverlay()

BtrfsIconOverlay::BtrfsIconOverlay ( )

inline

Definition at line 26 of file iconoverlay.h.

                       {
        refcount = 0;
        InterlockedIncrement(&objs_loaded);
    }

~BtrfsIconOverlay()

virtual BtrfsIconOverlay::~BtrfsIconOverlay ( )

inlinevirtual

Definition at line 31 of file iconoverlay.h.

                                {
        InterlockedDecrement(&objs_loaded);
    }

Member Function Documentation

AddRef()

ULONG __stdcall BtrfsIconOverlay::AddRef ( )

inline

Definition at line 39 of file iconoverlay.h.

                             {
        return InterlockedIncrement(&refcount);
    }

Referenced by QueryInterface().

GetOverlayInfo()

HRESULT __stdcall BtrfsIconOverlay::GetOverlayInfo ( PWSTR  pwszIconFile, int  cchMax, int *  pIndex, DWORD *  pdwFlags  )

virtualnoexcept

Definition at line 46 of file iconoverlay.cpp.

                                                                                                                        {
    if (GetModuleFileNameW(module, pwszIconFile, cchMax) == 0)
        return E_FAIL;
 
    if (GetLastError() == ERROR_INSUFFICIENT_BUFFER)
        return E_FAIL;
 
    if (!pIndex)
        return E_INVALIDARG;
 
    if (!pdwFlags)
        return E_INVALIDARG;
 
    *pIndex = 0;
    *pdwFlags = ISIOI_ICONFILE | ISIOI_ICONINDEX;
 
    return S_OK;
}

GetPriority()

HRESULT __stdcall BtrfsIconOverlay::GetPriority ( int *  pPriority )

virtualnoexcept

Definition at line 65 of file iconoverlay.cpp.

                                                                       {
    if (!pPriority)
        return E_INVALIDARG;
 
    *pPriority = 0;
 
    return S_OK;
}

IsMemberOf()

HRESULT __stdcall BtrfsIconOverlay::IsMemberOf ( PCWSTR  pwszPath, DWORD  dwAttrib  )

virtualnoexcept

Definition at line 74 of file iconoverlay.cpp.

                                                                                       {
    win_handle h;
    NTSTATUS Status;
    IO_STATUS_BLOCK iosb;
    btrfs_get_file_ids bgfi;
 
    h = CreateFileW(pwszPath, 0, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT, nullptr);
 
    if (h == INVALID_HANDLE_VALUE)
        return S_FALSE;
 
    Status = NtFsControlFile(h, nullptr, nullptr, nullptr, &iosb, FSCTL_BTRFS_GET_FILE_IDS, nullptr, 0, &bgfi, sizeof(btrfs_get_file_ids));
 
    if (!NT_SUCCESS(Status))
        return S_FALSE;
 
    return (bgfi.inode == 0x100 && !bgfi.top) ? S_OK : S_FALSE;
}

QueryInterface()

HRESULT __stdcall BtrfsIconOverlay::QueryInterface	(	REFIID	riid,
		void **	ppObj
	)

Definition at line 35 of file iconoverlay.cpp.

                                                                            {
    if (riid == IID_IUnknown || riid == IID_IShellIconOverlayIdentifier) {
        *ppObj = static_cast<IShellIconOverlayIdentifier*>(this);
        AddRef();
        return S_OK;
    }
 
    *ppObj = nullptr;
    return E_NOINTERFACE;
}

Release()

ULONG __stdcall BtrfsIconOverlay::Release ( )

inline

Definition at line 43 of file iconoverlay.h.

                              {
        LONG rc = InterlockedDecrement(&refcount);
 
        if (rc == 0)
            delete this;
 
        return rc;
    }

Member Data Documentation

refcount

LONG BtrfsIconOverlay::refcount

private

Definition at line 59 of file iconoverlay.h.

Referenced by AddRef(), BtrfsIconOverlay(), and Release().

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The documentation for this class was generated from the following files:

• dll/shellext/shellbtrfs/iconoverlay.h
• dll/shellext/shellbtrfs/iconoverlay.cpp