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From: terry@cs.weber.edu (Terry Lambert)
Message-Id: <9507172250.AA21555@cs.weber.edu>
Subject: CDROM FS AS ROOT
To: hackers@freebsd.org
Date: Mon, 17 Jul 95 16:50:05 MDT
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I'm looking at the cd9660_mountroot() function in the cd9660_vfsops.c
source module.

In this routine, there is an argument setting of args.flags to
ISOFSMNT_ROOT, which is to say 0.

This appears to be to specify ISO_FTYPE_DEFAULT?

It seems that it would be more correct to specify:

#ifndef ISOFSMNT_ROOT
#define ISOFSMNT_ROOT   ISO_FTYPE_DEFAULT	/* root must be default*/
#endif  

instead of what is there now, which is:

#ifndef ISOFSMNT_ROOT
#define ISOFSMNT_ROOT   0      
#endif  

And in fact would be cannonically more correct to throw out the dependence
on the file system type in the mountroot code (or provide seperate entry
points for a mountroot of each file system type)?

I'm all for throwing the dependencies out the window; I think a root
mount is a root mount.  There are a couple of architecture changes
necessary for auto-type detection, but once they're done (after the
previously discussed changes), it should be possible to use any CDROM
media type as a root file system without a lot of effort.

What does everyone think?  I need to know relatively soon so I can do
the general changes correctly.


					Terry Lambert
					terry@cs.weber.edu
---
Any opinions in this posting are my own and not those of my present
or previous employers.