[uml-devel] Hostfs permission checks are all wonky.

[Rob Landley <rob@landley.net>]

If I open a device like /dev/loop0 or /dev/console from a hostfs mount, I'll 
get the UML device, not the host device, right?

So why are the permissions checks on hostfs devices done relative to the 
_host_ user?  If /dev/console doesn't belong to the current user, the system 
can't even open the initial console, despite the fact the output does NOT go 
to TTY1 if I'm running it an xterm.

Similarly, if /dev/loop0 is chmod 600 and I run UML as a normal user and try 
to do a mount -o loop, it says it can't find a loop device.  Yet if I run UML 
as root, it doesn't allocate one of the parent's loop devices, UML does it 
internally...

I'm told there's a major rewrite of hostfs underway.  Is it worth me trying to 
patch the existing hostfs code, or should I go try to track down the new 
stuff and try it out?

Rob


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