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Date: Mon, 19 Mar 2012 11:43:43 -0500
From: Anthony Liguori <anthony@codemonkey.ws>
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Subject: Re: [Qemu-devel] [PATCH] readconfig: add emulation of /dev/fd/ to
 platforms that that lacks this API
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To: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Cc: kwolf@redhat.com, qemu-devel@nongnu.org

On 03/03/2012 01:49 AM, Ronnie Sahlberg wrote:
> Please find a patch to -readconfig.
>
> On many platforms -readconfig /dev/fd/<n>  can be used to read from an already opened and inherited filedescriptor<n>.
>
> On platforms that do not natively provide /dev/fd/<n>

What platforms don't provide /dev/fd/<n> where fd passing makes sense?

Regards,

Anthony Liguori

> add emulation of this by checking if the ofiginal fopen(path) failed, then IF
> the path starts with /dev/fd/ then try to read the descriptorvalue and fdopen() it.
>
>
> It means that we can use -readconfig /dev/fd/<n>  on all platforms. On those that provide a /dev/fd we just open that file. On those that do not we emulate it.
>
>
> regards
> ronnie sahlberg
>
>