Re: [PATCH v2] vfs: Shortcut AT_EMPTY_PATH early for statx, and add AT_NO_PATH for statx and fstatat

[Mateusz Guzik]

On Tue, Jun 25, 2024 at 12:51 PM Xi Ruoyao <xry111@xxxxxxxxxxx> wrote:
>
> On Tue, 2024-06-25 at 10:50 +0200, Christian Brauner wrote:
> > No, let's not waste AT_* flag space in fear of some hypothetical
> > breakage. Let's try it cleanly first and make AT_EMPTY_PATH work with
> > NULL paths.
> >
> > Note, I started working on this (checks ...) 30th April but then some
> > other work came up and I never got back to it (Sorry, Linus). I pushed
> > the branch to #vfs.empty.path now. The top three commits was what I had
> > started doing.
> >
> > It was based on a new vfs_empty_path() helper so we could reuse it for
> > other system calls as well.
>
> If I understand correctly, I should submit a patch against
> vfs.empty.path making statx(fd, NULL, AT_EMPTY_PATH) work then?
>

I just sorted this out, will be sending a patchset shortly.


-- 
Mateusz Guzik <mjguzik gmail.com>