Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!udel!mmdf
From: brian <CRAWFORD_B%PLU.BITNET@cornellc.cit.cornell.edu>
Newsgroups: comp.os.minix
Subject: Re: (PC/AT) why not include 'sync' in keyboard.c (for rebooting?)
Message-ID: <50809@nigel.ee.udel.edu>
Date: 15 Apr 91 17:20:39 GMT
Sender: mmdf@ee.udel.edu
Lines: 16

C.v.W writes:

"It is not allowed that drivers call FS or MM, this is against the MINIX
 hierarchy."

I thought Minix was layered as such: Level 1: Kernel; Level 2: Device
Drivers; Level 3: FS and MM; Level 4: user applications.  I believe there
is a figure in the book to this effect.  If this is the case, then device
drivers must communicate with either the file system or the memory manager
since they are a level directly above the drivers (if the driver needs to
communicate with an application, for example).

Please comment further.

Brian Crawford
CRAWFORD_B@PLU.BITNET