From: "Theodore Ts'o" <tytso@mit.edu>
To: Jeremy Allison <jra@samba.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
Pavel Shilovsky <piastry@etersoft.ru>,
linux-cifs@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-fsdevel@vger.kernel.org, wine-devel@winehq.org,
linux-nfs@vger.kernel.org
Subject: Re: [PATCH 0/3] Add O_DENY* flags to fcntl and cifs
Date: Thu, 6 Dec 2012 16:31:33 -0500 [thread overview]
Message-ID: <20121206213133.GB4821@thunk.org> (raw)
In-Reply-To: <20121206195752.GA18585@samba2>
On Thu, Dec 06, 2012 at 11:57:52AM -0800, Jeremy Allison wrote:
>
> And this is where things get really ugly of course :-).
>
> For the CIFSFS client they're expecting to be able to
> just ship them to a Windows server, where they'll
> get the (insane) Windows semantics. These semantics
> are not what would be wanted on a local filesystem.
I'm confused; why would a userspace application need to be able to
request this behavior? I can understand why an SMB client might
depend on this so it can use Windows' insane cache coherency scheme.
Are you trying to let Samba act as a middle man, where a remote file
system is mounted on Linux, and then Samba will try to act as a SMB
server, so you want to be able to pass through these semantics, i.e.:
Windows SMB Server <---> Linux cifs remote file system <--->
Linux Samba server <---> Windows SMB client
Is this somewhat contrivuewd example the intended use case? Or
something else?
- Ted
next prev parent reply other threads:[~2012-12-06 21:31 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-06 18:26 [PATCH 0/3] Add O_DENY* flags to fcntl and cifs Pavel Shilovsky
2012-12-06 18:26 ` [PATCH 1/3] fcntl: Introduce new O_DENY* open flags for network filesystems Pavel Shilovsky
2012-12-06 18:26 ` [PATCH 2/3] CIFS: Add O_DENY* open flags support Pavel Shilovsky
2012-12-06 18:26 ` [PATCH 3/3] CIFS: Use NT_CREATE_ANDX command for forcemand mounts Pavel Shilovsky
2012-12-06 19:49 ` [PATCH 0/3] Add O_DENY* flags to fcntl and cifs Alan Cox
2012-12-06 19:57 ` Jeremy Allison
2012-12-06 20:13 ` Jeremy Allison
2012-12-06 21:31 ` Theodore Ts'o [this message]
2012-12-06 21:33 ` Jeremy Allison
2012-12-06 21:37 ` Theodore Ts'o
2012-12-06 21:39 ` Jeremy Allison
2012-12-07 14:29 ` Steve French
2012-12-07 14:30 ` Steve French
2012-12-07 16:34 ` Alan Cox
2012-12-07 9:08 ` Pavel Shilovsky
2012-12-07 14:52 ` J. Bruce Fields
2012-12-07 15:37 ` simo
2012-12-07 16:09 ` J. Bruce Fields
2012-12-07 16:16 ` Christoph Hellwig
2012-12-07 20:43 ` Pavel Shilovsky
2012-12-07 21:35 ` Alan Cox
2012-12-07 23:55 ` Myklebust, Trond
2012-12-10 16:41 ` J. Bruce Fields
2012-12-11 13:11 ` Jeff Layton
2012-12-12 8:34 ` David Laight
2012-12-14 14:12 ` Pavel Shilovsky
2012-12-14 15:30 ` Alan Cox
2012-12-14 19:19 ` Steve French
2012-12-17 15:36 ` J. Bruce Fields
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