From: "H. Peter Anvin" <hpa@zytor.com>
To: Stanislav Kinsbursky <skinsbursky@parallels.com>
Cc: Trond.Myklebust@netapp.com, davem@davemloft.net,
linux-nfs@vger.kernel.org, eric.dumazet@gmail.com,
xemul@parallels.com, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, bfields@fieldses.org,
viro@zeniv.linux.org.uk, tim.c.chen@linux.intel.com,
devel@openvz.org
Subject: Re: [RFC PATCH 0/2] net: connect to UNIX sockets from specified root
Date: Fri, 10 Aug 2012 11:15:02 -0700 [thread overview]
Message-ID: <50254FA6.3060806@zytor.com> (raw)
In-Reply-To: <20120810125701.7115.71612.stgit@localhost.localdomain>
On 08/10/2012 05:57 AM, Stanislav Kinsbursky wrote:
> Today, there is a problem in connecting of local SUNRPC thansports. These
> transports uses UNIX sockets and connection itself is done by rpciod
> workqueue.
> But UNIX sockets lookup is done in context of process file system root. I.e.
> all local thunsports are connecting in rpciod context.
> This works nice until we will try to mount NFS from process with other root -
> for example in container. This container can have it's own (nested) root and
> rcpbind process, listening on it's own unix sockets. But NFS mount attempt in
> this container will register new service (Lockd for example) in global rpcbind
> - not containers's one.
>
> This patch set introduces kernel connect helper for UNIX stream sockets and
> modifies unix_find_other() to be able to search from specified root.
> It also replaces generic socket connect call for local transports by new
> helper in SUNRPC layer.
>
> The following series implements...
On that whole subject...
Do we need a Unix domain socket equivalent to openat()?
-hpa
WARNING: multiple messages have this Message-ID (diff)
From: "H. Peter Anvin" <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
To: Stanislav Kinsbursky
<skinsbursky-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
Cc: Trond.Myklebust-HgOvQuBEEgTQT0dZR+AlfA@public.gmane.org,
davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org,
linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
eric.dumazet-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
xemul-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org,
netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
bfields-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org,
viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn@public.gmane.org,
tim.c.chen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org,
devel-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org
Subject: Re: [RFC PATCH 0/2] net: connect to UNIX sockets from specified root
Date: Fri, 10 Aug 2012 11:15:02 -0700 [thread overview]
Message-ID: <50254FA6.3060806@zytor.com> (raw)
In-Reply-To: <20120810125701.7115.71612.stgit-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
On 08/10/2012 05:57 AM, Stanislav Kinsbursky wrote:
> Today, there is a problem in connecting of local SUNRPC thansports. These
> transports uses UNIX sockets and connection itself is done by rpciod
> workqueue.
> But UNIX sockets lookup is done in context of process file system root. I.e.
> all local thunsports are connecting in rpciod context.
> This works nice until we will try to mount NFS from process with other root -
> for example in container. This container can have it's own (nested) root and
> rcpbind process, listening on it's own unix sockets. But NFS mount attempt in
> this container will register new service (Lockd for example) in global rpcbind
> - not containers's one.
>
> This patch set introduces kernel connect helper for UNIX stream sockets and
> modifies unix_find_other() to be able to search from specified root.
> It also replaces generic socket connect call for local transports by new
> helper in SUNRPC layer.
>
> The following series implements...
On that whole subject...
Do we need a Unix domain socket equivalent to openat()?
-hpa
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next prev parent reply other threads:[~2012-08-10 18:16 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-10 12:57 [RFC PATCH 0/2] net: connect to UNIX sockets from specified root Stanislav Kinsbursky
2012-08-10 12:57 ` [RFC PATCH 1/2] unix sockets: add ability for search for peer from passed root Stanislav Kinsbursky
2012-08-10 12:57 ` Stanislav Kinsbursky
2012-08-10 18:10 ` J. Bruce Fields
2012-08-10 18:43 ` Stanislav Kinsbursky
2012-08-10 18:43 ` Stanislav Kinsbursky
2012-08-10 12:57 ` [RFC PATCH 2/2] SUNRPC: connect local transports with unix_stream_connect_root() helper Stanislav Kinsbursky
2012-08-10 18:15 ` H. Peter Anvin [this message]
2012-08-10 18:15 ` [RFC PATCH 0/2] net: connect to UNIX sockets from specified root H. Peter Anvin
2012-08-10 18:26 ` Alan Cox
2012-08-10 18:31 ` H. Peter Anvin
2012-08-10 18:31 ` H. Peter Anvin
2012-08-10 18:40 ` Alan Cox
2012-08-10 18:40 ` Alan Cox
2012-08-10 18:42 ` H. Peter Anvin
2012-08-10 19:11 ` J. Bruce Fields
2012-08-10 19:28 ` Alan Cox
2012-08-10 19:28 ` Alan Cox
2012-08-10 23:09 ` H. Peter Anvin
2012-08-11 6:23 ` Pavel Emelyanov
2012-08-11 6:23 ` Pavel Emelyanov
2012-08-11 11:15 ` Stanislav Kinsbursky
2012-08-13 16:47 ` J. Bruce Fields
2012-08-13 17:39 ` Stanislav Kinsbursky
2012-08-13 18:24 ` J. Bruce Fields
2012-08-14 8:46 ` Stanislav Kinsbursky
2012-08-14 8:46 ` Stanislav Kinsbursky
2012-08-10 18:50 ` Stanislav Kinsbursky
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