Re: [Fwd: Getting IOCTL's into VFS File System Drivers]
H. Peter Anvin (hpa@transmeta.com)
Wed, 10 Nov 1999 18:40:06 -0800
"Jeff V. Merkey" wrote:
>
> Alan Cox wrote:
> >
> > > work). I am trying to set it up so Linux can use NWFS as a boot file
> > > system, and it appears you folks are going to oppose this hapenning by
> > > restricting needed capabilities in Linux?
> >
> > In what way does it need to talk to it in advance ?
>
> Alan,
>
> 1. Config mirror groups during boot.
> 2. Ask User Config Questions by querying FS data, if needed.
> 3. Check Volume Tables if fsck is required (rather than build them
> twice in user space)
> 4. not createing chicken/egg scenario becuase NWFS needs EXT2 to create
> it's "IOCTL" access point to perform the operations above without EXT2.
> 5. Utilities can talk to FS for namespace maintenance, etc. during
> normal opns.
>
Jeff, you either already have a root filesystem -- which may be ext2 or
nwfs or any bloody thing -- or you don't. If you don't, you don't have
ANY USERSPACE WHATSOEVER. There is no user config you could call.
If you need userspace to mount your root filesystem, you have to use
initrd, and then you can have the associated /dev nodes on the ramdisk
just fine.
-hpa
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