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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20120810192628.79a34d28@pyramind.ukuu.org.uk>
Date:	Fri, 10 Aug 2012 19:26:28 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	"H. Peter Anvin" <hpa@...or.com>
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 that whole subject...
> 
> Do we need a Unix domain socket equivalent to openat()?

I don't think so. The name is just a file system indexing trick, it's not
really the socket proper. It's little more than "ascii string with
permissions attached" - indeed we also support an abstract name space
which for a lot of uses is actually more convenient.

AF_UNIX between roots raises some interesting semantic questions when you
begin passing file descriptors down them as well.

Alan
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/