From: Jeff King <peff@peff.net>
To: "Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>
Cc: git@vger.kernel.org
Subject: Re: [PATCH] shallow: verify shallow file after taking lock
Date: Thu, 27 Feb 2014 04:22:27 -0500 [thread overview]
Message-ID: <20140227092227.GA28551@sigill.intra.peff.net> (raw)
In-Reply-To: <20140227091012.GB21892@sigill.intra.peff.net>
On Thu, Feb 27, 2014 at 04:10:12AM -0500, Jeff King wrote:
> I also notice that check_shallow_file_for_update returns early if
> !is_shallow. Is that safe? Is it possible for another process to have
> made us shallow since the program began? In that case, we would have to
> stat() the file always, then complain if it exists and !is_shallow.
That patch would look like this:
diff --git a/shallow.c b/shallow.c
index 75da07a..e05a241 100644
--- a/shallow.c
+++ b/shallow.c
@@ -139,13 +139,13 @@ void check_shallow_file_for_update(void)
{
struct stat st;
- if (!is_shallow)
- return;
- else if (is_shallow == -1)
+ if (is_shallow == -1)
die("BUG: shallow must be initialized by now");
if (stat(git_path("shallow"), &st))
die("shallow file was removed during fetch");
+ else if (!is_shallow)
+ die("shallow file appeared during fetch");
else if (st.st_mtime != shallow_stat.st_mtime
#ifdef USE_NSEC
|| ST_MTIME_NSEC(st) != ST_MTIME_NSEC(shallow_stat)
but again, I'm not really clear on whether this is possible.
-Peff
next prev parent reply other threads:[~2014-02-27 9:22 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-27 7:13 [PATCH] upload-pack: allow shallow fetching from a read-only repository Nguyễn Thái Ngọc Duy
2014-02-27 9:04 ` Jeff King
2014-02-27 9:10 ` [PATCH] shallow: verify shallow file after taking lock Jeff King
2014-02-27 9:22 ` Jeff King [this message]
2014-02-27 10:18 ` Duy Nguyen
2014-02-27 10:56 ` [PATCH] shallow: use stat_validity to check for up-to-date file Jeff King
2014-02-27 10:11 ` [PATCH] upload-pack: allow shallow fetching from a read-only repository Duy Nguyen
2014-02-27 11:25 ` [PATCH] shallow: automatically clean up shallow tempfiles Jeff King
2014-03-04 12:30 ` [PATCH v2] upload-pack: allow shallow fetching from a read-only repository Nguyễn Thái Ngọc Duy
2014-03-04 18:10 ` Junio C Hamano
2014-03-05 12:43 ` Duy Nguyen
2014-03-05 19:50 ` Junio C Hamano
2014-03-06 8:49 ` [PATCH v3] upload-pack: send shallow info over stdin to pack-objects Nguyễn Thái Ngọc Duy
2014-03-06 18:37 ` Junio C Hamano
2014-03-06 23:13 ` Duy Nguyen
2014-03-07 18:27 ` Junio C Hamano
2014-03-08 0:08 ` Duy Nguyen
2014-03-10 15:23 ` Junio C Hamano
2014-03-07 1:24 ` Duy Nguyen
2014-03-07 18:33 ` Junio C Hamano
2014-03-11 12:59 ` [PATCH v4] " Nguyễn Thái Ngọc Duy
-- strict thread matches above, loose matches on Subject: below --
2014-03-15 3:47 [PATCH] shallow: verify shallow file after taking lock Jeff King
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