From: Johannes Sixt <j.sixt@viscovery.net>
To: Jeff King <peff@peff.net>
Cc: "Clemens Buchacher" <drizzd@aon.at>,
"Zbigniew Jędrzejewski-Szmek" <zbyszek@in.waw.pl>,
git@vger.kernel.org, gitster@pobox.com
Subject: Re: [PATCH] t5570: forward git-daemon messages in a different way
Date: Thu, 19 Apr 2012 08:58:01 +0200 [thread overview]
Message-ID: <4F8FB779.60004@viscovery.net> (raw)
In-Reply-To: <20120419060326.GA13982@sigill.intra.peff.net>
Am 4/19/2012 8:03, schrieb Jeff King:
> mkfifo fd
> yes >fd &
> pid=$!
> {
> read line
> echo $line
> cat <fd &
> } <fd
> sleep 1
> kill $pid
> wait $pid
> rm -f fd
...
> Hmm. Yeah, if you strace the cat, it gets an immediate EOF. And even
> weirder, I notice this in the strace output:
>
> clone(...)
> close(0) = 0
> open("/dev/null", O_RDONLY) = 0
> ...
> execve("/bin/cat", ["cat"], [/* 50 vars */]) = 0
>
> What? The shell is literally redirecting the cat process's stdin from
> /dev/null. I'm totally confused.
You don't have to be; it's mandated by POSIX:
http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_09_03_02
-- Hannes
next prev parent reply other threads:[~2012-04-19 6:58 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-14 8:44 [PATCH] t5570: forward git-daemon messages in a different way Zbigniew Jędrzejewski-Szmek
2012-04-14 12:13 ` Clemens Buchacher
2012-04-14 12:21 ` Clemens Buchacher
2012-04-16 15:43 ` Zbigniew Jędrzejewski-Szmek
2012-04-16 17:09 ` Junio C Hamano
2012-04-16 21:22 ` Clemens Buchacher
2012-04-16 22:06 ` Zbigniew Jędrzejewski-Szmek
2012-04-17 15:43 ` Junio C Hamano
2012-04-16 17:42 ` Jeff King
2012-04-16 22:44 ` Clemens Buchacher
2012-04-19 6:03 ` Jeff King
2012-04-19 6:58 ` Johannes Sixt [this message]
2012-04-26 13:01 ` Jeff King
2012-04-26 18:16 ` Johannes Sixt
2012-04-26 19:55 ` Clemens Buchacher
2012-04-26 21:00 ` [PATCH] t5570: fix forwarding of git-daemon messages via cat Johannes Sixt
2012-04-26 21:10 ` Zbigniew Jędrzejewski-Szmek
2012-04-27 7:59 ` Jeff King
2012-04-27 15:02 ` Junio C Hamano
2012-04-27 7:55 ` [PATCH] t5570: forward git-daemon messages in a different way Jeff King
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4F8FB779.60004@viscovery.net \
--to=j.sixt@viscovery.net \
--cc=drizzd@aon.at \
--cc=git@vger.kernel.org \
--cc=gitster@pobox.com \
--cc=peff@peff.net \
--cc=zbyszek@in.waw.pl \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.