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
Input buffer
The mount manager client initializes the MOUNTMGR_VOLUME_MOUNT_POINT structure 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.
Input / Output buffer
N/A
Input / Output buffer length
N/A
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.
Remarks
For more information, see Supporting Mount Manager Requests in a Storage Class Driver.
Requirements
| Requirement | Value |
|---|---|
| Header | mountmgr.h (include Mountmgr.h) |