Re: [linux-usb] Re: USB device allocation

Brandon S. Allbery KF8NH (allbery@kf8nh.apk.net)
Sat, 09 Oct 1999 23:26:52 -0400

In message <Pine.LNX.3.96L.991009222830.8553B-100000@saveearly.weh.andrew.cmu
.e
du>, Bradley M Keryan writes:
+-----
| On Sat, 9 Oct 1999, Khimenko Victor wrote:
| > In <19991008173618.E4163@sventech.com> Johannes Erdfelt (jerdfelt@sventech.
| com) wrote:
| > > There's 2 portions to devfs, the kernel portion and the user space
| > > portion. I'm talking about putting all of this into the user space
| > > portion, devfsd.
| >
| > It's not possible: userspace portion can not be awoked when you try to acce
| ss
| > non-existing file.
|
| Really? So how do the "venus" daemons of AFS, Arla, Coda, and Intermezzo
| handle this? AFAIK, all four filesystems depend on user-space daemons to
+--->8

They have kernel portions of the kind that Johannes is proposing to *remove*
from devfs.

And unlike devfs, they need it: they are network filesystems, not virtual
device trees. (Indeed, AFS and Arla, at least, don't even support devices.)

Also note that they differ from the current devfs setup: devfs doesn't
notify the devfsd when a device is being *accessed*, only when it is created
or removed.

-- 
brandon s. allbery	   os/2,linux,solaris,perl	allbery@kf8nh.apk.net
system administrator	   kthkrb,heimdal,gnome,rt	  allbery@ece.cmu.edu
carnegie mellon / electrical and computer engineering			kf8nh
    We are Linux. Resistance is an indication that you missed the point.






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