Hello, Robert! Em Tue, 29 Sep 2015 22:56:59 +0200 Robert Millan <r...@gnu.org> escreveu:
> When you say USB is one of the things people need most, are you > thinking on any particular usage of USB? I.e. any device class in > particular? A combination of them? Not really --- I mean USB in general. However, if I had to choose, I'd pick USB mass storage devices. > I recall in earlier talk about USB we discussed about possible design > options my understanding from that discussion is that there were > basically three possible desirable goals: > > #1 multiplexing (multiple processes simultaneously using USB devices) > #2 authorization (allowing unprivileged users without I/O capability) > #3 compatibility with non-Rump users (e.g. CUPS or SANE) > > Note that if you simply patch libusb to start a Rump instance all by > itself, you're giving up on goals #1 and #2. However you retain goal > #3. Is this something you were already contemplating? Somewhat. I'm not quite concerned about #2, because I'm assuming the majority of people run Hurd on their personal computers. #1 is more worrying, but I think we can do without it --- at least as a proof of concept --- to get any USB working on Hurd at all. Furthermore, it might be the case that for some device classes and common uses multiplexing isn't that critical. > Note that retaining goals #1 and #2 is not difficult, it just means > adding a translator process to sit in-between and forward ioctls to > Rump. The upside is that this is *exactly* the same thing that is > missing for sound, so one could kill two birds with a single stone > this way. That's true. However, I prefer to start with the least complex approach at first, and then study its practical limitations and then develop it further, if needed. Moreover, in order to grasp every concept needed to make the ideal Hurd USB implementation, I need to reduce complexity and handle issues in isolation, learning by composition in small chunks and in a progressive manner. -- ,= ,-_-. =. Bruno Félix Rezende Ribeiro (oitofelix) [0x28D618AF] ((_/)o o(\_)) http://oitofelix.freeshell.org/ `-'(. .)`-' irc://chat.freenode.org/oitofelix \_/ xmpp:oitofe...@riseup.net GNU ccd2cue maintainer GNU Savannah hacker GNU web translation team coordinator (Brazilian Portuguese) GNU audio and video maintainer DMOZ free software editor (Portuguese) UFU FAMAT PET member [GNU DISCLAIMER] I'm a GNU hacker, but my views don't necessarily match those of the GNU project. Hereby I express my own opinion, style and perception, in good faith, aiming the betterment of GNU.
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