From mboxrd@z Thu Jan  1 00:00:00 1970
From: erik quanstrom <quanstro@quanstro.net>
Date: Mon, 31 Oct 2011 18:46:35 -0400
To: 9fans@9fans.net
Message-ID: <1ba1d3d3e8c6c238b42ee6402e7df5ba@chula.quanstro.net>
In-Reply-To: <CAP6exYKue2e7NWx07+RMNDs38aXex0y9urfT6eT1LKbjvvA_yw@mail.gmail.c>
References: <CAP6exYK1SaBpCd2yEwv7o_F7BjisWsO7hr==C08RRFQWFnpG-w@mail.gmail.com>
	<CAHfqX-oxrs3BG-sX8wc0-VKzoBStLajvs50ptoEnq62Z+ThdVg@mail.gmail.com>
	<CAP6exYKpjZONkfMcxptJS_UgO73Sp4RyWsmaFRxRbLZ+F9jtQg@mail.gmail.com>
	<CAHfqX-rbBYOEkJsKcdij9_pCJUqV_fBB95r0_NwdwX9stjpqNQ@mail.gmail.com>
	<CAK4xykUj+0hXOzqvdqKVWFiSPhSfgM8_p9jreLU5Cgo-g009zg@mail.gmail.com>
	<CAHfqX-qYHnP9yPSesciDB-YbkmSV2QvX7XyYkEbOsz0_gJjLYg@mail.gmail.com>
	<CAP6exYK8+DB2P3F1X4tDSs3pdc=takr--AOMAF=FJJG2pprPHw@mail.gmail.com>
	<CAHfqX-rSHiiN4fQmnT_jXQ+SBS92M1biPhP7WmDhkmYrvseP8Q@mail.gmail.com>
	<CAP6exYJ8MQdcRa1vofMVjgaFK0Xu-po4eZBOOb>
	<CAP6exYKue2e7NWx07+RMNDs38aXex0y9urfT6eT1LKbjvvA_yw@mail.gmail.c>
MIME-Version: 1.0
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit
Subject: Re: [9fans] native (mostly) go for plan9
Topicbox-Message-UUID: 3d6639b6-ead7-11e9-9d60-3106f5b1d025

On Mon Oct 31 18:39:19 EDT 2011, rminnich@gmail.com wrote:
> well, I could be really lazy. I think this would work.
>
> given an fd, say 6
> newfd = open('#d/6", OREXEC|permissions)
> close(fd)
> then dup the newfd. The newfd will close when you leave.
>
> Problem: what are the permissions for the old fd ...

poke through /proc/$pid/fd and find out?

otoh, it seems that the go runtime, if it wants this information,
might have enough control to maintain it itself.

- erik