Re: devfs: The conclusion.

Alan Cox (alan@lxorguk.ukuu.org.uk)
Mon, 10 Aug 1998 01:23:46 +0100 (BST)


> You sort of touched on something not really mentioned before here. If the
> root partition is read only then /dev has to be separate, you cannot

Sorry but thats not the case. The fact mingetty is broken on read only
root file systems isnt at all a kernel problem. I've got working r/o /dev
equipment.

> How does POSIX relate to major/minor numbers. mknod isn't POSIX according
> to my man page and I believe NTFS is a POSIX fs (whatever!!) but doesn't
> support major/minor numbers. so what gives anybody.

POSIX doesnt care. POSIX deals with the most generic I/O operations only
in POSIX.1 - its not a unix standard its a general standard for behaviour
thats designed to encompass stuff down to 8bit embedded kit.

Unix98 is the relevant document but I dont have my access to it right now.

> You probably can have various deamons running all the time just for
> updating devnames but it seems a waste of resources.

Daemons use less resources than devfs - because they are pageable

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