mountmgr.h

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/*++

Copyright (c) 1997-1999  Microsoft Corporation

Module Name:

    mountmgr.h

Abstract:

    This file defines the external mount point interface for administering
    mount points.

Author:

    norbertk

Revision History:

--*/

#ifndef _MOUNTMGR_
#define _MOUNTMGR_

#if _MSC_VER > 1000
#pragma once
#endif

#ifndef FAR
#define FAR
#endif


#define MOUNTMGR_DEVICE_NAME        L"\\Device\\MountPointManager"
#define MOUNTMGR_DOS_DEVICE_NAME    L"\\\\.\\MountPointManager"

#define MOUNTMGRCONTROLTYPE  ((ULONG) 'm')
#define MOUNTDEVCONTROLTYPE  ((ULONG) 'M')

//
// These are the IOCTLs supported by the mount point manager.
//

#define IOCTL_MOUNTMGR_CREATE_POINT                 CTL_CODE(MOUNTMGRCONTROLTYPE, 0, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_MOUNTMGR_DELETE_POINTS                CTL_CODE(MOUNTMGRCONTROLTYPE, 1, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_MOUNTMGR_QUERY_POINTS                 CTL_CODE(MOUNTMGRCONTROLTYPE, 2, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_MOUNTMGR_DELETE_POINTS_DBONLY         CTL_CODE(MOUNTMGRCONTROLTYPE, 3, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_MOUNTMGR_NEXT_DRIVE_LETTER            CTL_CODE(MOUNTMGRCONTROLTYPE, 4, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_MOUNTMGR_AUTO_DL_ASSIGNMENTS          CTL_CODE(MOUNTMGRCONTROLTYPE, 5, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_MOUNTMGR_VOLUME_MOUNT_POINT_CREATED   CTL_CODE(MOUNTMGRCONTROLTYPE, 6, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_MOUNTMGR_VOLUME_MOUNT_POINT_DELETED   CTL_CODE(MOUNTMGRCONTROLTYPE, 7, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_MOUNTMGR_CHANGE_NOTIFY                CTL_CODE(MOUNTMGRCONTROLTYPE, 8, METHOD_BUFFERED, FILE_READ_ACCESS)
#define IOCTL_MOUNTMGR_KEEP_LINKS_WHEN_OFFLINE      CTL_CODE(MOUNTMGRCONTROLTYPE, 9, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_MOUNTMGR_CHECK_UNPROCESSED_VOLUMES    CTL_CODE(MOUNTMGRCONTROLTYPE, 10, METHOD_BUFFERED, FILE_READ_ACCESS)
#define IOCTL_MOUNTMGR_VOLUME_ARRIVAL_NOTIFICATION  CTL_CODE(MOUNTMGRCONTROLTYPE, 11, METHOD_BUFFERED, FILE_READ_ACCESS)

//
// Input structure for IOCTL_MOUNTMGR_CREATE_POINT.
//

typedef struct _MOUNTMGR_CREATE_POINT_INPUT {
    USHORT  SymbolicLinkNameOffset;
    USHORT  SymbolicLinkNameLength;
    USHORT  DeviceNameOffset;
    USHORT  DeviceNameLength;
} MOUNTMGR_CREATE_POINT_INPUT, *PMOUNTMGR_CREATE_POINT_INPUT;

//
// Input structure for IOCTL_MOUNTMGR_DELETE_POINTS,
// IOCTL_MOUNTMGR_QUERY_POINTS, and IOCTL_MOUNTMGR_DELETE_POINTS_DBONLY.
//

typedef struct _MOUNTMGR_MOUNT_POINT {
    ULONG   SymbolicLinkNameOffset;
    USHORT  SymbolicLinkNameLength;
    ULONG   UniqueIdOffset;
    USHORT  UniqueIdLength;
    ULONG   DeviceNameOffset;
    USHORT  DeviceNameLength;
} MOUNTMGR_MOUNT_POINT, *PMOUNTMGR_MOUNT_POINT;

//
// Output structure for IOCTL_MOUNTMGR_DELETE_POINTS,
// IOCTL_MOUNTMGR_QUERY_POINTS, and IOCTL_MOUNTMGR_DELETE_POINTS_DBONLY.
//

typedef struct _MOUNTMGR_MOUNT_POINTS {
    ULONG                   Size;
    ULONG                   NumberOfMountPoints;
    MOUNTMGR_MOUNT_POINT    MountPoints[1];
} MOUNTMGR_MOUNT_POINTS, *PMOUNTMGR_MOUNT_POINTS;

//
// Input structure for IOCTL_MOUNTMGR_NEXT_DRIVE_LETTER.
//

typedef struct _MOUNTMGR_DRIVE_LETTER_TARGET {
    USHORT  DeviceNameLength;
    WCHAR   DeviceName[1];
} MOUNTMGR_DRIVE_LETTER_TARGET, *PMOUNTMGR_DRIVE_LETTER_TARGET;

//
// Output structure for IOCTL_MOUNTMGR_NEXT_DRIVE_LETTER.
//

typedef struct _MOUNTMGR_DRIVE_LETTER_INFORMATION {
    BOOLEAN DriveLetterWasAssigned;
    UCHAR   CurrentDriveLetter;
} MOUNTMGR_DRIVE_LETTER_INFORMATION, *PMOUNTMGR_DRIVE_LETTER_INFORMATION;

//
// Input structure for IOCTL_MOUNTMGR_VOLUME_MOUNT_POINT_CREATED and
// IOCTL_MOUNTMGR_VOLUME_MOUNT_POINT_DELETED.
//

typedef struct _MOUNTMGR_VOLUME_MOUNT_POINT {
    USHORT  SourceVolumeNameOffset;
    USHORT  SourceVolumeNameLength;
    USHORT  TargetVolumeNameOffset;
    USHORT  TargetVolumeNameLength;
} MOUNTMGR_VOLUME_MOUNT_POINT, *PMOUNTMGR_VOLUME_MOUNT_POINT;

//
// Input structure for IOCTL_MOUNTMGR_CHANGE_NOTIFY.
// Output structure for IOCTL_MOUNTMGR_CHANGE_NOTIFY.
//

typedef struct _MOUNTMGR_CHANGE_NOTIFY_INFO {
    ULONG   EpicNumber;
} MOUNTMGR_CHANGE_NOTIFY_INFO, *PMOUNTMGR_CHANGE_NOTIFY_INFO;

//
// Input structure for IOCTL_MOUNTMGR_KEEP_LINKS_WHEN_OFFLINE and
// IOCTL_MOUNTMGR_VOLUME_ARRIVAL_NOTIFICATION.
//

typedef struct _MOUNTMGR_TARGET_NAME {
    USHORT  DeviceNameLength;
    WCHAR   DeviceName[1];
} MOUNTMGR_TARGET_NAME, *PMOUNTMGR_TARGET_NAME;

//
// Macro that defines what a "drive letter" mount point is.  This macro can
// be used to scan the result from QUERY_POINTS to discover which mount points
// are find "drive letter" mount points.
//

#define MOUNTMGR_IS_DRIVE_LETTER(s) (   \
    (s)->Length == 28 &&                \
    (s)->Buffer[0] == '\\' &&           \
    (s)->Buffer[1] == 'D' &&            \
    (s)->Buffer[2] == 'o' &&            \
    (s)->Buffer[3] == 's' &&            \
    (s)->Buffer[4] == 'D' &&            \
    (s)->Buffer[5] == 'e' &&            \
    (s)->Buffer[6] == 'v' &&            \
    (s)->Buffer[7] == 'i' &&            \
    (s)->Buffer[8] == 'c' &&            \
    (s)->Buffer[9] == 'e' &&            \
    (s)->Buffer[10] == 's' &&           \
    (s)->Buffer[11] == '\\' &&          \
    (s)->Buffer[12] >= 'A' &&           \
    (s)->Buffer[12] <= 'Z' &&           \
    (s)->Buffer[13] == ':')

//
// Macro that defines what a "volume name" mount point is.  This macro can
// be used to scan the result from QUERY_POINTS to discover which mount points
// are "volume name" mount points.
//

#define MOUNTMGR_IS_VOLUME_NAME(s) (                                          \
     ((s)->Length == 96 || ((s)->Length == 98 && (s)->Buffer[48] == '\\')) && \
     (s)->Buffer[0] == '\\' &&                                                \
     ((s)->Buffer[1] == '?' || (s)->Buffer[1] == '\\') &&                     \
     (s)->Buffer[2] == '?' &&                                                 \
     (s)->Buffer[3] == '\\' &&                                                \
     (s)->Buffer[4] == 'V' &&                                                 \
     (s)->Buffer[5] == 'o' &&                                                 \
     (s)->Buffer[6] == 'l' &&                                                 \
     (s)->Buffer[7] == 'u' &&                                                 \
     (s)->Buffer[8] == 'm' &&                                                 \
     (s)->Buffer[9] == 'e' &&                                                 \
     (s)->Buffer[10] == '{' &&                                                \
     (s)->Buffer[19] == '-' &&                                                \
     (s)->Buffer[24] == '-' &&                                                \
     (s)->Buffer[29] == '-' &&                                                \
     (s)->Buffer[34] == '-' &&                                                \
     (s)->Buffer[47] == '}'                                                   \
    )

//
// The following IOCTL is supported by mounted devices.
//

#define IOCTL_MOUNTDEV_QUERY_DEVICE_NAME    CTL_CODE(MOUNTDEVCONTROLTYPE, 2, METHOD_BUFFERED, FILE_ANY_ACCESS)

//
// Output structure for IOCTL_MOUNTDEV_QUERY_DEVICE_NAME.
//

typedef struct _MOUNTDEV_NAME {
    USHORT  NameLength;
    WCHAR   Name[1];
} MOUNTDEV_NAME, *PMOUNTDEV_NAME;

//
// Devices that wish to be mounted should report this GUID in
// IoRegisterDeviceInterface.
//

DEFINE_GUID(MOUNTDEV_MOUNTED_DEVICE_GUID, 0x53f5630d, 0xb6bf, 0x11d0, 0x94, 0xf2, 0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b);

#endif