Xref: utzoo comp.unix.wizards:12057 comp.bugs.sys5:659
Path: utzoo!attcan!uunet!yale!cmcl2!rna!dan
From: dan@rna.UUCP (Dan Ts'o)
Newsgroups: comp.unix.wizards,comp.bugs.sys5
Subject: empty() for USG UNIX ?
Message-ID: <292@rna.UUCP>
Date: 2 Nov 88 01:02:00 GMT
Organization: Rockefeller University - Neurobiology
Lines: 18


	Sorry for being so lazy, but can someone send me a C routine for
the USG System V termio equivalent of the old Rand empty(fd) call.
The empty(fd) call took a file descriptor argument, usually a tty, and returned
1 if there were no characters in the queue to read (would block if read(fd)
were issued) and 0 if there were bytes to read. It also worked on pipes, but
I don't care about that feature at this point. I have the 4BSD equivalent,
which just uses ioctl(FIONREAD) to return how many characters are in the
queue. So what is the System V equivalent ? Thanks.
	Please email responses.

				Cheers,
				Dan Ts'o		212-570-7671
				Dept. Neurobiology	dan@rna.rockefeller.edu
				Rockefeller Univ.	...cmcl2!rna!dan
				1230 York Ave.		rna!dan@nyu.arpa
				NY, NY 10021		tso@rockefeller.arpa
							tso@rockvax.bitnet