Date: Tue, 30 Jul 1996 17:17:38 +0200 (MET DST) From: "Christoph P. Kukulies" <kuku@gilberto.physik.rwth-aachen.de> To: s_koyin@eduserv.its.unimelb.EDU.AU (HMG coA reductase) Cc: questions@freebsd.org Subject: Re: your mail Message-ID: <199607301517.RAA00612@gilberto.physik.rwth-aachen.de> In-Reply-To: <Pine.OSF.3.91.960730230342.14931A-100000@eduserv.its.unimelb.EDU.AU> from HMG coA reductase at "Jul 30, 96 11:14:08 pm"
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> hi again,
>
> this code:
>
> #include <ufs/ffs/fs.h>
>
> char fs[8196];
^
Just guessing: You are trying to read a non-multiple of 512 :-)
> open ("/dev/rwd0s2e", O_RDONLY, 0);
> lseek (f, SBOFF, SEEK_SET);
> read (f, fs, sizeof(fs));
>
> read gives an error "Invalid argument" which man read(2) says is due to a
> negative file descriptor. i know f is not negative.
>
> but this code works fine:
>
> char fs[SBSIZE];
> open ("/dev/rwd0s2e", O_RDONLY, 0);
> lseek (f, SBOFF, SEEK_SET);
> read (f, fs, sizeof(fs));
>
> any ideas?
>
> thanks.
> ivan
>
--Chris Christoph P. U. Kukulies kuku@gil.physik.rwth-aachen.de
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