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Date: Tue, 30 Jul 1996 23:14:08 +1000 (EST)
From: HMG coA reductase <s_koyin@eduserv.its.unimelb.EDU.AU>
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hi again,

this code:

#include <ufs/ffs/fs.h>

   char  fs[8196];  
   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