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From: sft@ihlpa.ATT.COM (Scott Thompson)
Newsgroups: comp.unix.questions
Subject: Truncating a file
Message-ID: <SFT.89May10101951@ihlpa.ATT.COM>
Date: 10 May 89 16:19:51 GMT
Sender: sft@ihlpa.ATT.COM
Distribution: comp
Organization: AT&T Bell Laboratories, Naperville, Illinois
Lines: 18

I want to read, process and write, a possibly smaller (truncate), mail
file in a single locked open.

Currently I can read, process and write the file originally opened
with fopen and "r+", but it will not truncate if the new file is
shorter; I also tried other combinations along with open, but they
truncate the file prior to reading!  This is for use under SYSV for
file locking a mail file.

Any and all suggestions will be appreciated.

Thanks

--
--
  Scott Thompson (IH 6W-207), AT&T Bell Labs, Naperville, Il. 60566

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