From: Lars Schneider <larsxschneider@gmail.com>
To: Junio C Hamano <gitster@pobox.com>
Cc: Git Users <git@vger.kernel.org>,
Thomas Gummerer <t.gummerer@gmail.com>,
Jonathan Nieder <jrnieder@gmail.com>, Jeff King <peff@peff.net>
Subject: Re: [PATCH v1 2/2] entry.c: check if file exists after checkout
Date: Sun, 8 Oct 2017 23:41:13 +0200 [thread overview]
Message-ID: <C7B91A82-CB55-4435-9204-D6A8F7F640CB@gmail.com> (raw)
In-Reply-To: <20171006045640.vihagnlnuximzmjs@sigill.intra.peff.net>
> On 06 Oct 2017, at 06:56, Jeff King <peff@peff.net> wrote:
>
> On Fri, Oct 06, 2017 at 01:26:48PM +0900, Junio C Hamano wrote:
>
> ...
>> -- >8 --
>> From: Lars Schneider <larsxschneider@gmail.com>
>> Date: Thu, 5 Oct 2017 12:44:07 +0200
>> Subject: [PATCH] entry.c: check if file exists after checkout
>>
>> If we are checking out a file and somebody else racily deletes our file,
>> then we would write garbage to the cache entry. Fix that by checking
>> the result of the lstat() call on that file. Print an error to the user
>> if the file does not exist.
>
> I don't know if we wanted to capture any of the reasoning behind using
> error() here or not. Frankly, I'm not sure how to argue for it
> succinctly. :) I'm happy with letting it live on in the list archive.
>
>> diff --git a/entry.c b/entry.c
>> index f879758c73..6d9de3a5aa 100644
>> --- a/entry.c
>> +++ b/entry.c
>> @@ -341,7 +341,9 @@ static int write_entry(struct cache_entry *ce,
>> if (state->refresh_cache) {
>> assert(state->istate);
>> if (!fstat_done)
>> - lstat(ce->name, &st);
>> + if (lstat(ce->name, &st) < 0)
>> + return error_errno("unable stat just-written file %s",
>> + ce->name);
>
> s/unable stat/unable to stat/, I think.
>
> Other than that, this looks fine to me.
>
> -Peff
Looks fine to me, too.
Thanks,
Lars
prev parent reply other threads:[~2017-10-08 21:41 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-05 10:44 [PATCH v1 0/2] fix temporary garbage in the cache entry lars.schneider
2017-10-05 10:44 ` [PATCH v1 1/2] entry.c: update cache entry only for existing files lars.schneider
2017-10-05 11:12 ` Jeff King
2017-10-05 11:19 ` Junio C Hamano
2017-10-05 11:26 ` Jeff King
2017-10-05 23:01 ` Junio C Hamano
2017-10-06 4:54 ` Jeff King
2017-10-08 21:37 ` Lars Schneider
2017-10-09 17:47 ` Jeff King
2017-10-09 17:48 ` [PATCH 1/3] write_entry: fix leak when retrying delayed filter Jeff King
2017-10-10 0:00 ` Junio C Hamano
2017-10-10 9:23 ` Simon Ruderich
2017-10-10 9:25 ` Jeff King
2017-10-10 9:49 ` Simon Ruderich
2017-10-09 17:48 ` [PATCH 2/3] write_entry: avoid reading blobs in CE_RETRY case Jeff King
2017-10-10 0:00 ` Junio C Hamano
2017-10-09 17:50 ` [PATCH 3/3] write_entry: untangle symlink and regular-file cases Jeff King
2017-10-10 0:03 ` Junio C Hamano
2017-10-05 10:44 ` [PATCH v1 2/2] entry.c: check if file exists after checkout lars.schneider
2017-10-05 11:23 ` Jeff King
2017-10-06 4:26 ` Junio C Hamano
2017-10-06 4:56 ` Jeff King
2017-10-06 6:03 ` Junio C Hamano
2017-10-06 6:05 ` Jeff King
2017-10-06 7:58 ` Junio C Hamano
2017-10-08 21:41 ` Lars Schneider [this message]
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