From owner-freebsd-current  Tue Apr 17  5:52:59 2001
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Date: Tue, 17 Apr 2001 22:51:33 +1000 (EST)
From: Bruce Evans <bde@zeta.org.au>
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To: Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
Cc: "John W. De Boskey" <jwd@FreeBSD.ORG>,
	Current List <freebsd-current@FreeBSD.ORG>
Subject: Re: FIO* doc added to tty.4 (review)
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On Mon, 16 Apr 2001, Garrett Wollman wrote:

> <<On Sun, 15 Apr 2001 22:26:37 -0700, "John W. De Boskey" <jwd@FreeBSD.ORG> said:
> 
> >    I've been doing some tty related work and found the FIO*
> > requests don't seem to be documented.
> 
> >    I've added some reasonable doc to tty.4 and put up the
> > the diff and html forms:
> 
> As the initial letter suggests, they are generic file ioctls and not
> specific to the teletype driver.  They should be described in the
> ioctl(2) manual page.

Most of them are best described by "deprecated; use the corresponding file
[descriptor] operation in fcntl(2)".
The main exceptions are:
- FIONREAD: no other way to do this yet
- FIODTYPE: no other way to do this yet
- FIOGETLBA: not even a generic device ioctl; should never have been here

Bruce


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