Subject: re: USB emul under Linux
To: M. Warner Losh <email@example.com>
From: matthew green <firstname.lastname@example.org>
Date: 01/22/2005 12:40:10
The ugen interface and the linux interfaces are fairly different. In
addition, Linux's usb stack behaves somewhat differently than NetBSD's
stack, so doing a perfect emulation would be somewhat different. The
treatment of pipes is somewhat different and would present the biggest
i thought "libusb" allowed appliations to avoid those differences.
however, in my attempt at porting the "hpoj" printer software for
HP's "all-in-one" printer/scanner/copies/etc, i gave up when something
was attempting to open /dev/ugen0 multiple times and the 2nd time got
EBUSY. does linux (and/or freebsd?) USB allow multiple opens?