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- From: Claus Brod <clausb@hpbeo79.bbn.hp.com>
- Subject: XATTR structure for BIOS filesystem #2
- Date: Mon, 22 Nov 93 10:09:22 MEZ
- Mailer: Elm [revision: 70.85]
-
- > Most device drivers just seem to test if the rwflag is non-zero to check
- > if a write call is wanted, although my documentation (german Profibuch) says
- > explicitly a write call has to set rwflag=1. If one could rely on this fact,
- > it would be easy to implement modes 2-3 to report the m/a-t/d fields (c-t/d
- > is unlikely to change :-), if not, you'd have to face the fact that the
- > device driver would interpret this as a write call.
-
- Not too bad an idea. I'd suggest the following "calling convention":
-
- - call datime in mode 0, store return value
- - call datime in mode 2
- - call datime in mode 0; compare with previous result; if the results
- differ, call datime in mode 1 with the old value
-
- This way, you make sure that even old drivers will not permanently
- change access times because they don't know about mode 2 and 3.
-
- --clausb@hpbeo79.bbn.hp.com-----------------------------------------------
- Claus Brod, MDD, HP Boeblingen Magic is real unless declared integer.
- --#include <std_disclaimer>-----------------------------------------------
-