Path: utzoo!attcan!uunet!mcsun!sunic!kth!draken!matsl
From: matsl@nada.kth.se (Mats Luthman)
Newsgroups: comp.os.minix
Subject: System calls: particularly checking if input is available on stdin
Message-ID: <1730@draken.nada.kth.se>
Date: 21 Sep 89 22:17:50 GMT
Reply-To: matsl@nada.kth.se (Mats Luthman)
Organization: Royal Institute of Technology, Stockholm, Sweden
Lines: 13

I know how to do it in both BSD and AT&T UNIX, but I can't find a fcntl
function in libc.a (on MINIX-ST). I can find gtty and stty, but I can't find
documentation about them anywhere. I remember reading something about
them a long time ago, but I don't remember enough. Aren't they considered
obsolete? And by the way, is there a manual on MINIX system calls? I have the
book, but it doesn't say very much about how to use them, and gtty and stty
aren't even mentioned (in the index). I have the AT&T manual, but it doesn't
seem to help me, at least not in this case. Another thing I can't find is
macros for the mode parameter to open().

Another thing I want to know: if I want a certain function to be called
every time there is input available on a file descriptor, what do I do?
There is no SIGIO signal, so I wonder if it is at all possible.