Matthew Dillon wrote:
> 
>     Actually Terry is wrong here :-)  Sorry Terry.  The portal filesystem
>     is not really a filesystem.  All it can do is intercept open()s and
>     return descriptors.  It isn't like NULLFS.   The portal filesystem
>     does not do any layering at all.  open() does not return a portalfs
>     descriptor.
> 
>     What portalfs does is connect to a unix domain socket (aka a userland
>     process) and then it expects a control message to sent to it with
>     a descriptor (like to a normal file or a TCP socket or whatever).  It
>     then returns the descriptor directly.

You're right.  The code is all different here from what it was
originally.  Originally, you were supposed to be able to treat
a program as a file, and not have to do the socket passing around.

-- Terry

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