Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!att!cbnewsl!sar0
From: sar0@cbnewsl.att.com (stephen.a.rago)
Newsgroups: comp.unix.questions
Subject: Re: t_free before closing descriptor?
Message-ID: <1990Jul27.195818.10014@cbnewsl.att.com>
Date: 27 Jul 90 19:58:18 GMT
References: <1990Jul25.045439.19914@clark.uucp> <1601@excelan.COM>
Distribution: usa
Organization: AT&T Bell Laboratories
Lines: 18

In article <1601@excelan.COM>, murthy@la.excelan.com (M.D. Srinivas Murthy) writes:
> In article <1990Jul25.045439.19914@clark.uucp> ade@clark.edu (Adrian Miranda) writes:
> >t_connect, pop the timod module and push the tirdwr module.  Finally,
> >the file descriptor is returned to the caller, which uses it to do
> >whatever.  What I'm wondering is, can I t_free the T_CALL structure at
> 
> Once you push the tirdwr module, you cannot use any TLI calls on that 
> descriptor. If you use, tirdwr module generates a fatal error, EPROTO.

Not strictly true.  t_free doesn't do anything except free the previously
allocated space.

> Is it necessary to pop the timod module before you push the tirdwr module?

Only if you want to avoid the overhead of an additional module on the stream.

Steve Rago
sar@attunix.att.com