From mboxrd@z Thu Jan  1 00:00:00 1970
From: jnc@mercury.lcs.mit.edu (Noel Chiappa)
Date: Sun, 14 Aug 2016 20:27:11 -0400 (EDT)
Subject: [TUHS] fstat(2) on pipes?
Message-ID: <20160815002711.3F3C418C096@mercury.lcs.mit.edu>

    > From: Warren Toomey

    > I'm trying to find out what fstat(2) returns when the file descriptor
    > is a pipe.

In V6, it returns information about the file (inode) used as a temporary
storage area for data which has been written into the pipe, but not yet read;
i.e. it's an un-named file with a length which varies between 0 and 4KB.

    > xv6 has fstat() but returns an error if the file descriptor isn't
    > associated with an i-node.

?? All pipe file descriptors should have an inode?

	Noel