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From: amoss@batata.huji.ac.il (amos shapira)
Newsgroups: comp.unix.wizards
Subject: Re: Raw disk I/O
Message-ID: <703@shuldig.Huji.Ac.IL>
Date: 24 Mar 90 14:30:19 GMT
References: <MARC.90Feb14083116@focsys.uucp> <22552@mimsy.umd.edu>
Sender: daemon@ucbvax.BERKELEY.EDU
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chris@mimsy.umd.edu (Chris Torek) writes:

>>1) Does file locking via fcntl() still apply ?

>No, because there are no files.  fcntl() does not do file locking in BSD
>anyway: fnctl() for locking is a System V feature.  BSD provides only
>flock().

While it's true that there are no files in the partition used, the process
should still be able to lock the partition itself (e.g. /dev/rxsd0c), which
could help provide some degree of consistency.

Correct me if I have a mistake.

>In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7163)
>Domain: chris@cs.umd.edu Path: uunet!mimsy!chris

Cheers,
- Amos Shapira - amoss@batata.huji.ac.il[.bitnet]

Super users do it without asking for permission - me.