IOCTL_MOUNTMGR_VOLUME_MOUNT_POINT_CREATED IOCTL (mountmgr.h)

This IOCTL alerts the mount manager that a volume mount point has been created, so that the mount manager can replicate the database entry for the given mount point. Its primary function is to allow volume mount points to persist even when the volumes are moved from one system to another.

The Microsoft Win32 routine SetVolumeMountPoint sends this IOCTL to the mount manager, to inform the mount manager that a newly-created directory junction is pointing to a volume name. The mount manager responds by storing the volume name contained in the directory junction along with its unique ID on the volume hosting the directory junction.

Major code

IRP_MJ_DEVICE_CONTROL

Input buffer

The mount manager client initializes the MOUNTMGR_VOLUME_MOUNT_POINT structure, defined in Mountmgr.h, at the beginning of the buffer at Irp->AssociatedIrp.SystemBuffer.

Input buffer length

Parameters.DeviceIoControl.InputBufferLength in the I/O stack location of the IRP indicates the size, in bytes, of the input buffer, which must be greater than or equal to sizeof(MOUNTMGR_VOLUME_MOUNT_POINT).

Output buffer

None

Output buffer length

None

Status block

If the operation is successful, the Status field is set to STATUS_SUCCESS.

If InputBufferLength is less than sizeof(MOUNTMGR_VOLUME_MOUNT_POINT), the Status field is set to STATUS_INVALID_PARAMETER.

Requirements

See also

MOUNTMGR_VOLUME_MOUNT_POINT