From: Junio C Hamano <gitster@pobox.com>
Date: Sun, 17 Feb 2008 08:07:34 GMT
Subject: Re: [PATCH] start_command(), if .in/.out > 0, closes file descriptors, not the callers
Message-ID: <7vodag2egp.fsf@gitster.siamese.dyndns.org>
In-Reply-To: <20080217074252.GO24004@spearce.org>

"Shawn O. Pearce" <spearce@spearce.org> writes:

> Of course the same argument can be said for fd 0; if the parent does
> close(0) before some other open/socket/pipe call then its obviously
> possible for the parent to get a fd that it wants the child to take
> over and close.
>
> We're basically assuming that the parent will always keep its
> own stdin open if it will be spawning children.  We all know what
> happens when we assume (we double close file descriptors) but I
> think its a reasonable safe assumption to be making.

Ok, that unwritten assumption was what confused me.  We
definitely need Documentation/technical/api-*.txt before any
more code, don't you agree?