Re: [PATCH] private mounts

[Miklos Szeredi]

> > Comments are appreciated.  If there are no vetoes agains the patch, I
> > think it's suitable for -mm.
> 
> Vetoed.  Having suid application with different pathname resolution than
> that of parent just because it is suid is not acceptable.  I'm sorry,
> but breaking hell knows how many existing applications is not an option.

I'm pretty sure any suid program doing path resolution and other
filesystem operations on _behalf_ of the original user will do them
with fsuid, fsgid set to the original.  Otherwise they are bound to
break in other cases too (NFS export with root_sqash, etc).

Have any counterexamples?

Thanks,
Miklos
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/