From: Junio C Hamano <gitster@pobox.com>
Date: Thu, 14 Jan 2010 21:31:16 GMT
Subject: Re: [PATCH 3/4] start_command: detect execvp failures early
Message-ID: <7viqb49xwb.fsf@alter.siamese.dyndns.org>
In-Reply-To: <201001101411.22418.j6t@kdbg.org>

Johannes Sixt <j6t@kdbg.org> writes:

> Previously, failures during execvp could be detected only by
> finish_command. However, in some situations it is beneficial for the
> parent process to know earlier that the child process will not run.
>
> The idea to use a pipe to signal failures to the parent process and
> the test case were lifted from patches by Ilari Liusvaara.

I wonder if we can do this without pipe, perhaps using "vfork, exec, then
update a variable"....