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From: "Simão Afonso" <simao.afonso@powertools-tech.com>
To: Jeff King <peff@peff.net>
Cc: git@vger.kernel.org
Subject: Re: Credential Store: Don't acquire lock when only reading the file
Date: Fri, 30 Oct 2020 11:22:29 +0000	[thread overview]
Message-ID: <20201030112229.3rcyylkuyrlrhn7g@safonso-t430> (raw)
In-Reply-To: <20201030055541.GA3264588@coredump.intra.peff.net>

Hi Jeff, thanks for the fast reply.

On 2020-10-30 01:55:41, Jeff King wrote:
> I agree that "get" should not be taking a lock. And looking at the code,
> I don't think that it is.
> 
> However, after successfully using a password, Git will then trigger each
> helper with a "store" command. So likely what you are seeing is each
> fetch telling credential-store to store the successful password.

Ah, the plot thickens. That sounds more like it.

On 2020-10-30 01:55:41, Jeff King wrote:
> There are a few options here:
> 
>   - we could have Git not do that. And indeed, I wrote a patch for that
>     long ago:
> 
>       https://lore.kernel.org/git/20120407033417.GA13914@sigill.intra.peff.net/
> 
>     but it turns out that some people rely on it. There were some
>     options discussed there for moving it forward, but nothing ever
>     happened.
> 
>     Another option that we didn't discuss there: we could remember which
>     helper gave us the credential and not feed it back to itself. That
>     would let simple cases work without the extra request, but would let
>     more complex ones (feeding the result of one helper to another)
>     continue to work the same.

Right, I did not imagine you could chain credential helpers, but that
makes sense.

On 2020-10-30 01:55:41, Jeff King wrote:
> Interested in trying a patch for any of those?

Sounds good to me, I should be able to handle it if you CC/BCC me
(subscribing to the firehose is a bit too much).

For reference, I'm using:

> $ git --version
> git version 2.29.1

  reply	other threads:[~2020-10-30 11:22 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-29 19:20 Credential Store: Don't acquire lock when only reading the file Simão Afonso
2020-10-30  5:55 ` Jeff King
2020-10-30 11:22   ` Simão Afonso [this message]
2020-10-30 11:25     ` Jeff King
2020-10-30 11:39       ` Simão Afonso
2020-10-30 12:05   ` Simão Afonso
2020-10-30 15:01     ` Jeff King

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