Protocol independent way to selectively restrict write-access for redirected USB mass storage devices

摘要

Universal serial bus (USB) mass storage devices may be redirected to a server to create USB virtual mass storage devices. For characteristics of the redirected device to be propagated to other users (accessing the redirected device via the virtual device) it is necessary to alter the Mode Sense data. In one embodiment, certain users may be given only read-only access to the redirected device. In another embodiment only some of the redirected devices are write-protected. By saving characteristics of a redirected device in the server registry or active directory, the USB virtual bus driver may impose, for example, write-protection on one or more devices connected by one or more users.