#ifndef _NTIOAPI_H

// Input structure for IOCTL_MOUNTMGR_KEEP_LINKS_WHEN_OFFLINE,
// IOCTL_MOUNTMGR_VOLUME_ARRIVAL_NOTIFICATION,
// IOCTL_MOUNTMGR_QUERY_DOS_VOLUME_PATH, and
// IOCTL_MOUNTMGR_QUERY_DOS_VOLUME_PATHS.
// IOCTL_MOUNTMGR_PREPARE_VOLUME_DELETE
// IOCTL_MOUNTMGR_CANCEL_VOLUME_DELETE
typedef struct _MOUNTMGR_TARGET_NAME
{
    USHORT DeviceNameLength;
    _Field_size_bytes_(DeviceNameLength) WCHAR DeviceName[1];
} MOUNTMGR_TARGET_NAME, *PMOUNTMGR_TARGET_NAME;

#endif
View code on GitHub

// mountmgr.h

typedef struct _MOUNTMGR_TARGET_NAME {
  USHORT DeviceNameLength;
  WCHAR  DeviceName[1];
} MOUNTMGR_TARGET_NAME, *PMOUNTMGR_TARGET_NAME;
View the official Windows Driver Kit DDI reference

NtDoc

This structure is documented in Windows Driver Kit.

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Windows Driver Kit DDI reference (ns-mountmgr-_mountmgr_target_name)

Description

The MOUNTMGR_TARGET_NAME structure contains the nonpersistent target device name for a device and is used by mount manager clients with the IOCTL_MOUNTMGR_KEEP_LINKS_WHEN_OFFLINE request to tell the mount manager to keep the symbolic link for a device active even after the device has gone offline.

Members

`DeviceNameLength`

Contains the length, in bytes, of the device name stored in DeviceName.

`DeviceName`

Contains the nonpersistent target device name.

Remarks

Nonpersistent target names must contain the full path of a target object name in the system object tree. For example: "\Device\HarddiskVolume1".

For more information, see Supporting Mount Manager Requests in a Storage Class Driver.

MOUNTMGR_TARGET_NAME - NtDoc