/* $Id: nt.h 49150 2013-10-17 07:22:02Z vboxsync $ */
/** @file
 * IPRT - Header for code using the Native NT API.
 */

/*
 * Copyright (C) 2010-2013 Oracle Corporation
 *
 * This file is part of VirtualBox Open Source Edition (OSE), as
 * available from http://www.virtualbox.org. This file is free software;
 * you can redistribute it and/or modify it under the terms of the GNU
 * General Public License (GPL) as published by the Free Software
 * Foundation, in version 2 as it comes in the "COPYING" file of the
 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
 *
 * The contents of this file may alternatively be used under the terms
 * of the Common Development and Distribution License Version 1.0
 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
 * VirtualBox OSE distribution, in which case the provisions of the
 * CDDL are applicable instead of those of the GPL.
 *
 * You may elect to license modified versions of this file under the
 * terms and conditions of either the GPL or the CDDL or both.
 */

#ifndef ___iprt_nt_nt_h___
#define ___iprt_nt_nt_h___

#include <ntstatus.h>
#ifdef IPRT_NT_USE_WINTERNL
# define WIN32_NO_STATUS
# include <windef.h>
# include <winnt.h>
# include <winternl.h>
# undef WIN32_NO_STATUS
# include <ntstatus.h>
# define IPRT_NT_NEED_API_GROUP_1

#elif defined(IPRT_NT_USE_WDM)
# include <wdm.h>
# define IPRT_NT_NEED_API_GROUP_1

#else
# include <ntifs.h>
#endif
#include <iprt/types.h>


/** @name Useful macros
 * @{ */
/** Indicates that we're targetting native NT in the current source. */
#define RTNT_USE_NATIVE_NT              1
/** Initializes a IO_STATUS_BLOCK. */
#define RTNT_IO_STATUS_BLOCK_INITIALIZER  { STATUS_FAILED_DRIVER_ENTRY, ~(uintptr_t)42 }
/** Similar to INVALID_HANDLE_VALUE in the Windows environment. */
#define RTNT_INVALID_HANDLE_VALUE         ( (HANDLE)~(uintptr_t)0 )
/** @}  */


/** @name IPRT helper functions for NT
 * @{ */
RT_C_DECLS_BEGIN

RTDECL(int) RTNtPathOpen(const char *pszPath, ACCESS_MASK fDesiredAccess, ULONG fFileAttribs, ULONG fShareAccess,
                          ULONG fCreateDisposition, ULONG fCreateOptions, ULONG fObjAttribs,
                          PHANDLE phHandle, PULONG_PTR puDisposition);
RTDECL(int) RTNtPathOpenDir(const char *pszPath, ACCESS_MASK fDesiredAccess, ULONG fShareAccess, ULONG fCreateOptions,
                     ULONG fObjAttribs, PHANDLE phHandle, bool *pfObjDir);
RTDECL(int) RTNtPathClose(HANDLE hHandle);

RT_C_DECLS_END
/** @} */


/** @name NT API delcarations.
 * @{ */
RT_C_DECLS_BEGIN

#ifdef IPRT_NT_NEED_API_GROUP_1

typedef struct _FILE_FS_ATTRIBUTE_INFORMATION
{
    ULONG   FileSystemAttributes;
    LONG    MaximumComponentNameLength;
    ULONG   FileSystemNameLength;
    WCHAR   FileSystemName[1];
} FILE_FS_ATTRIBUTE_INFORMATION;
typedef FILE_FS_ATTRIBUTE_INFORMATION *PFILE_FS_ATTRIBUTE_INFORMATION;

typedef enum
{
    FileFsVolumeInformation = 1,
    FileFsLabelInformation,
    FileFsSizeInformation,
    FileFsDeviceInformation,
    FileFsAttributeInformation,
    FileFsControlInformation,
    FileFsFullSizeInformation,
    FileFsObjectIdInformation,
    FileFsMaximumInformation
} FS_INFORMATION_CLASS;
typedef FS_INFORMATION_CLASS *PFS_INFORMATION_CLASS;
extern "C" NTSTATUS NTAPI NtQueryVolumeInformationFile(HANDLE, PIO_STATUS_BLOCK, PVOID, ULONG, FS_INFORMATION_CLASS);

#endif

NTSTATUS NTAPI NtOpenDirectoryObject(PHANDLE, ACCESS_MASK, POBJECT_ATTRIBUTES);

typedef struct _OBJECT_DIRECTORY_INFORMATION
{
    UNICODE_STRING Name;
    UNICODE_STRING TypeName;
} OBJECT_DIRECTORY_INFORMATION;
typedef OBJECT_DIRECTORY_INFORMATION *POBJECT_DIRECTORY_INFORMATION;

NTSTATUS NTAPI NtQueryDirectoryObject(HANDLE, PVOID, ULONG, BOOLEAN, BOOLEAN, PULONG, PULONG);

RT_C_DECLS_END
/** @} */

#endif