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Article #241

WangDAT: How to fseek() ?

#241
From: Ivo Welch
Date: Sun, 26 Jul 1992 18:58
19 lines
1227 bytes
I would like to write a few programs to lay out our large databases onto a DAT
tape.  Unfortunately,  I  lack all expertise with   tape  drives,  and my Wang
manual is less than explicit.

I understand how to use devices (/dev/rxt0, /dev/nrxt0) to read and write data
byte by byte and  file by  file.  What I   really  would like, though, is  the
additional ability to  keep an  index on   disk,  and do a  fast fseek()  that
employs the WangDATs fast seek facilities. How would I do this in a C program?

I.e. could some kind sole please send me replacements  for fseek() and ftell()
with such DAT tape drives, please?

Thanks for any information.

/ivo welch

PS: Has anyone used SafetyNet? It got a rave review, but my efforts to contact
the author has been unsuccessful.
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From: iwelch@agsm.ucla.edu (Ivo Welch)
Newsgroups: comp.sys.next.sysadmin
Subject: WangDAT: How to fseek() ?
Keywords: cron
Message-ID: <1992Jul26.115817.27702@mic.ucla.edu>
Date: 26 Jul 92 18:58:16 GMT
Organization: UCLA, Anderson Graduate School Of Management
Lines: 19
Nntp-Posting-Host: risc.agsm.ucla.edu