reactos/dll/shellext/shellbtrfs/iconoverlay.cpp

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/* Copyright (c) Mark Harmstone 2016-17
*
* This file is part of WinBtrfs.
*
* WinBtrfs is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public Licence as published by
* the Free Software Foundation, either version 3 of the Licence, or
* (at your option) any later version.
*
* WinBtrfs 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 Lesser General Public Licence for more details.
*
* You should have received a copy of the GNU Lesser General Public Licence
* along with WinBtrfs. If not, see <http://www.gnu.org/licenses/>. */
#include "shellext.h"
#ifndef __REACTOS__
#include <windows.h>
#include <winternl.h>
#else
#define WIN32_NO_STATUS
#include <windef.h>
#include <winbase.h>
#include <ndk/iofuncs.h>
#endif
#include "iconoverlay.h"
#ifndef __REACTOS__
#include "../btrfsioctl.h"
#else
#include "btrfsioctl.h"
#endif
HRESULT __stdcall BtrfsIconOverlay::QueryInterface(REFIID riid, void **ppObj) {
if (riid == IID_IUnknown || riid == IID_IShellIconOverlayIdentifier) {
*ppObj = static_cast<IShellIconOverlayIdentifier*>(this);
AddRef();
return S_OK;
}
*ppObj = NULL;
return E_NOINTERFACE;
}
HRESULT __stdcall BtrfsIconOverlay::GetOverlayInfo(PWSTR pwszIconFile, int cchMax, int* pIndex, DWORD* pdwFlags) {
WCHAR dllpath[MAX_PATH];
GetModuleFileNameW(module, dllpath, sizeof(dllpath));
if ((size_t)cchMax < wcslen(dllpath))
return E_INVALIDARG;
if (!pIndex)
return E_INVALIDARG;
if (!pdwFlags)
return E_INVALIDARG;
wcscpy(pwszIconFile, dllpath);
*pIndex = 0;
*pdwFlags = ISIOI_ICONFILE | ISIOI_ICONINDEX;
return S_OK;
}
HRESULT __stdcall BtrfsIconOverlay::GetPriority(int *pPriority) {
if (!pPriority)
return E_INVALIDARG;
*pPriority = 0;
return S_OK;
}
HRESULT __stdcall BtrfsIconOverlay::IsMemberOf(PCWSTR pwszPath, DWORD dwAttrib) {
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, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT, NULL);
if (h == INVALID_HANDLE_VALUE)
return S_FALSE;
Status = NtFsControlFile(h, NULL, NULL, NULL, &iosb, FSCTL_BTRFS_GET_FILE_IDS, NULL, 0, &bgfi, sizeof(btrfs_get_file_ids));
if (!NT_SUCCESS(Status)) {
CloseHandle(h);
return S_FALSE;
}
CloseHandle(h);
return (bgfi.inode == 0x100 && !bgfi.top) ? S_OK : S_FALSE;
}