"Stephen C. Tweedie" wrote:
>
> Hi,
>
> On Wed, Oct 25, 2000 at 08:57:43AM -0700, Hans Reiser wrote:
>
> > > POSIX makes an unambiguous definition of inheritence --- inheritence
> > > is applied on file creation. Hard links only create a new directory
> > > entry, not a file, so the ACLs on the linked file don't change.
>
> > I am not convinced that it is necessarily bad for mv and ln to change the
>permissions. I mean, they
> > do that currently, why not allow it to happen for ACLs also?
>
> rename(2) and link(2) never change the permissions on the underlying
> file. If you do a "mv", then you might get permissions change, but
> that's just because the user-land "mv" application sometimes does a
> copy rather than a rename(2) (if you are moving a directory or if you
> cross a mount point).
>
> It is certainly _possible_ to allow ACLs to change on rename/link, but
> POSIX ACLs don't do that. Other filesystems may well do.
>
> Cheers,
> Stephen
Suppose /a is permissions 700 and /b is 777, and you rename /a/foo to /b/foo, you have
then changed
the permissions required for accessing the file. Permissions ARE path traversal
dependent in Unix.
Inheritance of them should be also.
Hans
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