Re: [PATCH v2] receive-pack: purge temporary data if no command is ready to run

[Jiang Xin <worldhello.net@gmail.com>]

On Sat, Feb 5, 2022 at 4:15 PM Bojun Chen <bojun.cbj@gmail.com> wrote:
>
> Junio C Hamano <gitster@pobox.com> 于2022年2月2日周三 06:51写道：
> >
> > Chen BoJun <bojun.cbj@gmail.com> writes:
> >
> > > From: Chen Bojun <bojun.cbj@alibaba-inc.com>
> > >
> > > When pushing a hidden ref, e.g.:
> > >
> > >     $ git push origin HEAD:refs/hidden/foo
> > >
> > > "receive-pack" will reject our request with an error message like this:
> > >
> > >     ! [remote rejected] HEAD -> refs/hidden/foo (deny updating a hidden ref)
> > >
> > > The remote side ("git-receive-pack") will not create the hidden ref as
> > > expected, but the pack file sent by "git-send-pack" is left inside the
> > > remote repository. I.e. the quarantine directory is not purged as it
> > > should be.
> >
> > I was puzzled by the reference to "pushing a hidden ref" at the
> > beginning of the proposed log message, as it wasn't quite clear that
> > it was merely an easy-to-reproduce recipe to fall into such a
> > situation where all ref updates are rejected.
> >
>
> Thanks for the suggestion. Do I have to rewrite this commit message on the v3?

You can start your commit message like this:

    receive-pack: purge temporary data if no command is ready to run

    When pushing to "receive-pack", commands may have already been
    marked with error_string or skip_update before being fed to the
    "pre-receive" hook. E.g.:

     * inconsistent push options for signed push.
     * not permited shallow updates.
     * encounter connectivity issues.
     * push to hidden references.

    Take pushing to hidden references as an example.

    In order to reduce the size of reference advertisement for git-push
    from a client which does not support protocol v2 and push negotiation,
    the administrator may set certain config variables to hide some
    references like:

        $ git config --system --add receive.hideRefs refs/merge-requests

    Then, if a user made a push like this:

        $ git push origin HEAD:refs/merge-requests/123/head

    ...

--
Jiang Xin