Xref: utzoo comp.unix.ultrix:7491 comp.unix.misc:1499
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!crdgw1!uunet!mcsun!ub4b!kulcs!info-sparc1.info.ucl.ac.be!fynu.ucl.ac.be!nina
From: Ninane@fynu.ucl.ac.be (Alain Ninane - FYNU)
Newsgroups: comp.unix.ultrix,comp.unix.misc
Subject: How to get device information from a file descriptor ?
Keywords: UNIX - devices - file descriptor
Message-ID: <1991Jun3.104948.20582@info-sparc1.info.ucl.ac.be>
Date: 3 Jun 91 10:49:48 GMT
Sender: news@info-sparc1.info.ucl.ac.be (News Administrator)
Followup-To: comp.unix.ultrix
Organization: University of Louvain (LLN) - Nuclear Physics Dept.
Lines: 13
Originator: nina@fynu3.fynu.ucl.ac.be
Nntp-Posting-Host: 130.104.3.7

Dear all of you,
Given a valid file descriptor [from an open(2) call], is there a
standard way to know whether or not this fd points to a specific
special file/device (major number only) ?
I'm particularely interrested to detect:
					/dev/[n]rst*, /dev/[n]rmt*
I'm looking for a non-string(3) operation on the device name.
As I guess this is OS dependent ... I'm using Ultrix 4.1 and SUNOS 4.1
Thank you very much, Alain.
-- 
Dr. Alain H. Ninane, University of Louvain, Nuclear Physics Dept.
Ch. du Cyclotron, 2 -  B-1348 Louvain-la-Neuve,  BELGIUM 
Tel: +32-10-47.32.73, Fax: +32-10-45.21.83, Internet: Ninane@fynu.ucl.ac.be