Make a Linux box look/ act like a USB mass storage device ? (VxWorks)

[Linuxguy123]

I have a PVR that puts out data on a USB bus to a mass storage device,
ie hard drive.  The device is formated for VxWorks.

Is there a way to configure a Linux box to capture that data stream ?

Is there a way to read VxWorks hard drives in Linux ?

Thanks

LG