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usfs — USB device side support for bulk only transport mass storage
To compile this driver into the kernel, place the following lines in your kernel configuration file: device usb device usfs Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): usfs_load="YES"
This driver is obsolete. Users are advised to use cfumass(4) instead. The usfs driver provides support for emulating an USB mass storage device when the USB stack is activated in USB device side mode (the usb_template(4) module is loaded and the hw.usb.template sysctl is set to 0). Upon attach the driver creates a RAM disk which can be read and written.
cfumass(4), umass(4), usb(4), usb_template(4)
The usfs driver appeared in FreeBSD 8.0.