Strange mounting issue with ext3

[Mikkel L. Ellertson]

Pat Suwalski wrote:
> 
> This would make sense. I have ext3 external disks that I take from 
> computer to computer. It's a constant nuisance with the [UG]IDs. Using 
> vfat makes everything have 755 permissions or 644 permissions and is 
> worse than having a user-permission-squashed ext3.
> 
You could alway give the stick 777 permissions. then anyone could
read/write to it.

The last thing I want is having a user-permission-squashed ext3
partition. For that matter, I am not sure I like the idea of an
auto-mounted ext[23] file system at all. The last thing I want is
someone to be able to copy a SUID program from a removable file
system without having root access in the first place.

One problem with using ext[23] file systems the way you want is that
their are no suid/sgid options for them. So there is not way for HAL
to mount them that way. What you need is a file system that
preserves permissions, but either have the suid/sgid options, or has
uid/gid to name mapping for the different systems it is mounted on.
It may be possible to write a fuse helper app that would handle the
mapping, and also prevent suid files from being copied off the drive.

Mikkel
-- 

  Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!

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