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Article #2398

open() from within a Device driver

#2398
From: Rajeev Menon
Date: Mon, 23 Nov 1992 22:29
20 lines
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I have a device driver on SCO UNIX SV3.2 (openDesktop 1.0) that
needs to open a regular file from within the driver, write stuff to it
and close the file later on, basically the equivalent of the open(), 
write(), close() system call. However, I'd guess I have to use kernel
equivalents being inside a device driver, right ?

The device driver manual lists a set of kernel routines, but I am
not sure what's appropriate. I see no equivalent of open, although
I see a db_read and a db_write. I'd appreciate hearing from someone
who knows. If you have done this on other UNIXen, I'd be interested 
in knowing the equivalents too.

thanks

rajeev
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Rajeev Menon				Phone : (707)-577-2302
Hewlett Packard Company			e-mail: rajeev@sr.hp.com
1400 Fountaingrove Pkwy
Santa Rosa CA 95403
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From: rajeev@hpnmdla.sr.hp.com (Rajeev Menon)
Date: Mon, 23 Nov 1992 22:29:21 GMT
Subject: open() from within a Device driver
Message-ID: <12850008@hpnmdla.sr.hp.com>
Organization: Hewlett-Packard, Santa Rosa, CA
Path: arc1-ca.pugleaf.net!sparky!uunet!cs.utexas.edu!sdd.hp.com!hpscit.sc.hp.com!scd.hp.com!hpscdm!hplextra!hpl-opus!hpnmdla!rajeev
Newsgroups: comp.unix.internals
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