linux-kernel - Re: [RFC PATCH 0/2] net: connect to UNIX sockets from specified root

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Message-ID: <50255618.9080708@zytor.com>
Date:	Fri, 10 Aug 2012 11:42:32 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Stanislav Kinsbursky <skinsbursky@...allels.com>,
	Trond.Myklebust@...app.com, davem@...emloft.net,
	linux-nfs@...r.kernel.org, eric.dumazet@...il.com,
	xemul@...allels.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, bfields@...ldses.org,
	viro@...iv.linux.org.uk, tim.c.chen@...ux.intel.com,
	devel@...nvz.org
Subject: Re: [RFC PATCH 0/2] net: connect to UNIX sockets from specified root

On 08/10/2012 11:40 AM, Alan Cox wrote:
> 
> Agreed on open() for sockets.. the lack of open is a Berklix derived
> pecularity of the interface. It would equally be useful to be able to
> open "/dev/socket/ipv4/1.2.3.4/1135" and the like for scripts and stuff
> 
> That needs VFS changes however so you can pass the remainder of a path to
> a device node. It also lets you do a lot of other sane stuff like
> 
> 	open /dev/ttyS0/9600/8n1
> 

Well, supporting device node subpaths would be nice, but I don't think
that that is a requirement either for being able to open() a socket (as
a Linux extension) nor for supporting something like your above
/dev/socket/... since that could be done with a filesystem rather than
just a device node.

	-hpa
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