Re: Mailbox

Ralf Baechle (ralf@uni-koblenz.de)
Tue, 6 Jul 1999 01:47:17 +0200


On Mon, Jul 05, 1999 at 07:38:39PM +0200, Jamie Lokier wrote:

> Albert D. Cahalan wrote:
> > If you need a file type, I've been collecting a list:
>
> You don't have S_IFNWK.
> GNU findutils lists this as "HP/UX" with no description.
>
> Also findutils lists S_IFMPB and S_IFMPC as "V7" but you say "Coherent".
> I'm also collecting a list -- could you tell me which is appropriate,
> or is it both: "Coherent & V7".

>From memory - V7 only had one type of special file which is non-standard
by todays standards. These are multiplexor files which were being
manipulated by the mpx(2) syscall. They never really did exist on the
V7 filesystem because the V7 fsck considered multiplexor files as
corroupted inodes and deleted them ... Wasn't the symbol used for them
S_IFMPX?

Ralf

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