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From: gwyn@brl-tgr.ARPA (Doug Gwyn <gwyn>)
Newsgroups: net.unix-wizards
Subject: Re: Maybe there should be a new flag to open(2)
Message-ID: <2261@brl-tgr.ARPA>
Date: Fri, 18-Oct-85 19:45:59 EDT
Article-I.D.: brl-tgr.2261
Posted: Fri Oct 18 19:45:59 1985
Date-Received: Sun, 20-Oct-85 06:13:04 EDT
References: <265@kovacs.UUCP> <2905@sun.uucp>
Organization: Ballistic Research Lab
Lines: 10

More importantly, the kernel cannot reasonably perform
all the validity checking on files that applications
might require, so each such application needs to do this
anyway.

If I found out that some system utility program refused
to work on ptys or other non-ordinary files for no good
reason other than attempting to "protect" the naive user,
I would be quite upset and would probably rip out the
silly restriction.