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SubjectRe: RO --bind mount implementation ...
On Tue, Aug 05, 2003 at 12:16:15AM +0200, Herbert Pötzl wrote:

> anyway, I discussed this with some friends, and
> they pointed out that this would be useful ...
> so here is the first try ...

Umm... You know, the most obvious system call that should care about
read-only is open(pathname, O_RDWR) ;-) IOW, taking care of directory
modifications is not enough - you need to deal with
* opening file for write
* truncation (both from *truncate() and from open() with O_TRUNC)
* metadata changes (timestamps, ownership, permissions)

But yes, it's not that far from where we should eventualy get.
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