From: Lukas Fleischer <lfleischer@lfos.de>
To: git@vger.kernel.org
Cc: Junio C Hamano <gitster@pobox.com>, Jeff King <peff@peff.net>
Subject: Re: [PATCH 11/12] receive-pack: treat namespace .have lines like alternates
Date: Fri, 27 Jan 2017 18:45:26 +0100 [thread overview]
Message-ID: <148553912610.7898.1319453517642036857@typhoon> (raw)
In-Reply-To: <xmqqa8aec40a.fsf@gitster.mtv.corp.google.com>
On Wed, 25 Jan 2017 at 20:51:17, Junio C Hamano wrote:
> [...]
> > diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
> > index 8f8762e4a..c55e2f993 100644
> > --- a/builtin/receive-pack.c
> > +++ b/builtin/receive-pack.c
> > @@ -251,8 +251,9 @@ static void show_ref(const char *path, const unsigned char *sha1)
> [...]
> > if (ref_is_hidden(path, path_full))
> [...]
> This is an unrelated tangent, but there may want to be a knob to
> make the code return here without even showing, to make the
> advertisement even smaller and also to stop miniscule information
> leakage? If the namespaced multiple projects are totally unrelated
> (i.e. "My sysadmin gave me a write access only to this single
> directory, so I am using the namespace feature to host these three
> projects that have nothing to do with each other"), showing objects
> of other namespaces will buy us nothing and the user is better off
> without this code showing these refs as ".have".
I think this is already possible using receive.hideRefs (which causes
the ref_is_hidden() branch above to return if applicable).
Having support for suppressing .have lines corresponding to different
namespaces was actually the reason I implemented 78a766ab6 (hideRefs:
add support for matching full refs, 2015-11-03). We have been using
namespaces for hosting the package Git repositories of the Arch Linux
User Repository [1] with a shared object storage for several months now.
See [2] for *some* technical details on how things are implemented; the
last section explains how the hideRefs mechanism can be used to limit
ref advertisement to the "active" namespace.
Regards,
Lukas
[1] https://aur.archlinux.org/
[2] https://git.archlinux.org/aurweb.git/plain/doc/git-interface.txt
next prev parent reply other threads:[~2017-01-27 17:54 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-24 0:37 [PATCH 0/12] reducing resource usage of for_each_alternate_ref Jeff King
2017-01-24 0:38 ` [PATCH 01/12] for_each_alternate_ref: handle failure from real_pathdup() Jeff King
2017-01-25 18:26 ` Junio C Hamano
2017-01-24 0:39 ` [PATCH 02/12] for_each_alternate_ref: stop trimming trailing slashes Jeff King
2017-01-24 0:40 ` [PATCH 03/12] for_each_alternate_ref: use strbuf for path allocation Jeff King
2017-01-25 18:29 ` Junio C Hamano
2017-01-25 18:40 ` Jeff King
2017-01-24 0:40 ` [PATCH 04/12] for_each_alternate_ref: pass name/oid instead of ref struct Jeff King
2017-01-24 0:44 ` [PATCH 05/12] for_each_alternate_ref: replace transport code with for-each-ref Jeff King
2017-01-25 19:00 ` Junio C Hamano
2017-01-24 0:45 ` [PATCH 06/12] clone: disable save_commit_buffer Jeff King
2017-01-25 19:11 ` Junio C Hamano
2017-01-25 19:27 ` Jeff King
2017-01-25 19:35 ` Jeff King
2017-01-25 21:07 ` Jeff King
2017-01-24 0:45 ` [PATCH 07/12] fetch-pack: cache results of for_each_alternate_ref Jeff King
2017-01-25 19:21 ` Junio C Hamano
2017-01-25 19:47 ` Jeff King
2017-01-24 0:46 ` [PATCH 08/12] add oidset API Jeff King
2017-01-24 20:26 ` Ramsay Jones
2017-01-24 20:35 ` Jeff King
2017-01-24 0:47 ` [PATCH 09/12] receive-pack: use oidset to de-duplicate .have lines Jeff King
2017-01-25 19:32 ` Junio C Hamano
2017-01-25 19:54 ` Jeff King
2017-01-24 0:47 ` [PATCH 10/12] receive-pack: fix misleading namespace/.have comment Jeff King
2017-01-24 0:48 ` [PATCH 11/12] receive-pack: treat namespace .have lines like alternates Jeff King
2017-01-25 19:51 ` Junio C Hamano
2017-01-25 19:58 ` Jeff King
2017-01-27 17:45 ` Lukas Fleischer [this message]
2017-01-27 17:58 ` Jeff King
2017-01-27 20:42 ` Junio C Hamano
2017-01-24 0:48 ` [PATCH 12/12] receive-pack: avoid duplicates between our refs and alternates Jeff King
2017-01-25 20:02 ` Junio C Hamano
2017-01-25 20:05 ` Jeff King
2017-01-24 1:33 ` [PATCH 0/12] reducing resource usage of for_each_alternate_ref Brandon Williams
2017-01-24 2:12 ` Jeff King
2017-02-08 20:52 ` [PATCH v2 0/11] " Jeff King
2017-02-08 20:52 ` [PATCH v2 01/11] for_each_alternate_ref: handle failure from real_pathdup() Jeff King
2017-02-08 20:52 ` [PATCH v2 02/11] for_each_alternate_ref: stop trimming trailing slashes Jeff King
2017-02-08 20:52 ` [PATCH v2 03/11] for_each_alternate_ref: use strbuf for path allocation Jeff King
2017-02-08 20:52 ` [PATCH v2 04/11] for_each_alternate_ref: pass name/oid instead of ref struct Jeff King
2017-02-08 20:53 ` [PATCH v2 05/11] for_each_alternate_ref: replace transport code with for-each-ref Jeff King
2017-02-08 20:53 ` [PATCH v2 06/11] fetch-pack: cache results of for_each_alternate_ref Jeff King
2017-02-08 20:53 ` [PATCH v2 07/11] add oidset API Jeff King
2017-02-08 20:53 ` [PATCH v2 08/11] receive-pack: use oidset to de-duplicate .have lines Jeff King
2017-02-08 20:53 ` [PATCH v2 09/11] receive-pack: fix misleading namespace/.have comment Jeff King
2017-02-08 20:53 ` [PATCH v2 10/11] receive-pack: treat namespace .have lines like alternates Jeff King
2017-02-08 20:53 ` [PATCH v2 11/11] receive-pack: avoid duplicates between our refs and alternates Jeff King
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