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Date: Fri, 19 Jul 2002 14:53:24 -0700 (PDT)
Message-Id: <20020719.145324.122050429.davem@redhat.com>
To: spotter@cs.columbia.edu
Cc: linux-kernel@vger.kernel.org
Subject: Re: file descriptor passing (jail related question)
From: "David S. Miller" <davem@redhat.com>
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   From: Shaya Potter <spotter@cs.columbia.edu>
   Date: 19 Jul 2002 17:58:07 -0400

   How does file descriptor passing work.  From what I can tell it uses the
   sendmsg and recvmsg calls.  Is this only process to process over a non
   ip socket  on the same machine (what's the right terminology for this,
   just a plain FIFO?), or could one conceivably pass a file descriptor
   over an ip socket?
   
File descriptors can only be passed over AF_UNIX sockets.
These are like fancy FIFO's on the local host using the
socket APIs for the communication and synchronization.
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