From: Eric Wong <e@80x24.org>
Date: Thu, 3 Oct 2019 07:21:59 +0000 (+0000)
Subject: init: implement locking
X-Git-Tag: v1.2.0~57
X-Git-Url: http://www.git.stargrave.org/?a=commitdiff_plain;h=6242da34fbe20940e3e258d2ec80e9aeef0438e1;hp=6242da34fbe20940e3e258d2ec80e9aeef0438e1;p=public-inbox.git

init: implement locking

First, we use flock(2) to wait on parallel public-inbox-init(1)
invocations while we make multiple changes using git-config(1).
This flock allows -init processes to wait on each other if using
reasonable POSIX filesystems.

Then, we also need a git-config(1)-compatible lock to prevent
user-invoked git-config(1) processes from clobbering our
changes while we're holding the flock.
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