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- Define NT RAM Disk device interface (100% compatible with Microsoft ramdisk.sys)

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svn path=/trunk/; revision=34201
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ReactOS Portable Systems Group 2008-06-30 02:13:53 +00:00
parent e114abfb64
commit 662c3b62fe
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reactos/include/reactos/drivers/ntddrdsk.h Normal file
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/*
* PROJECT: ReactOS Kernel
* LICENSE: BSD - See COPYING.ARM in the top level directory
* FILE: include/reactos/drivers/ntddrdsk.h
* PURPOSE: Constants and types for accessing the RAM disk device
* PROGRAMMERS: ReactOS Portable Systems Group
*/
#ifndef _NTDDRDSK_H_
#define _NTDDRDSK_H_
#if _MSC_VER > 1000
#pragma once
#endif
#ifdef __cplusplus1
extern "C" {
#endif
//
// This guid identifies a RAM disk volume
//
DEFINE_GUID(RAMDISK_BOOTDISK_GUID, 0xd9b257fc, 0x684e, 0x4dcb, 0x79, 0xab, 0xf6, 0xa2, 0xcf, 0x03, 0x50, 0xb7);
//
// Device Name - this string is the name of the device. It is the name
// that should be passed to NtOpenFile when accessing the device.
//
// Note: For devices that support multiple units, it should be suffixed
// with the Ascii representation of the unit number.
//
#define DD_RAMDISK_DEVICE_NAME "\\Device\\Ramdisk"
//
// IoControlCode values for ramdisk devices.
//
#define IOCTL_RAMDISK_BASE FILE_DEVICE_VIRTUAL_DISK
#define FSCTL_CREATE_RAM_DISK CTL_CODE(FILE_DEVICE_VIRTUAL_DISK, 0x0000, METHOD_BUFFERED, FILE_ANY_ACCESS)
//
// Options when creating a ramdisk
//
typedef struct _RAMDISK_CREATE_OPTIONS
{
ULONG Readonly:1;
ULONG Fixed:1;
ULONG NoDriveLetter:1;
ULONG NoDosDevice:1;
ULONG Hidden:1;
ULONG ExportAsCd:1;
} RAMDISK_CREATE_OPTIONS;
//
// This structure is passed in for a FSCTL_CREATE_RAM_DISK call
//
typedef struct _RAMDISK_CREATE_INPUT
{
ULONG Version;
GUID DiskGuid;
ULONG DiskType;
RAMDISK_CREATE_OPTIONS Options;
ULONGLONG DiskLength;
ULONG DiskOffset;
union
{
struct
{
ULONG ViewCount;
ULONG ViewLength;
WCHAR FileName[ANYSIZE_ARRAY];
};
struct
{
ULONG BasePage;
WCHAR DriveLetter;
};
PVOID BaseAddress;
};
} RAMDISK_CREATE_INPUT, *PRAMDISK_CREATE_INPUT;
#ifdef __cplusplus
}
#endif
#endif // _NTDDRDSK_H_