From: Volker Lendecke <Volker.Lendecke-PS7XAnAlDA+VvDNblw4Uiw@public.gmane.org>
To: Pavel Shilovsky <piastry-7qunaywFIewox3rIn2DAYQ@public.gmane.org>
Cc: Kernel Mailing List
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
linux-cifs <linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
linux-fsdevel
<linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Linux NFS Mailing list
<linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
wine-devel-5vRYHf7vrtgdnm+yROfE0A@public.gmane.org
Subject: Re: [PATCH v7 0/7] Add O_DENY* support for VFS and CIFS/NFS
Date: Tue, 21 Jan 2014 15:17:08 +0100
Date: Tue, 21 Jan 2014 15:17:08 +0100 [thread overview]
Message-ID: <E1W5c8k-0036ba-7A@intern.SerNet.DE> (raw)
In-Reply-To: <CAKywueQng9=u1YYwkYGCunWW8RBhARhJjEhBcoA6CKF6TrKSBg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On Tue, Jan 21, 2014 at 05:31:39PM +0400, Pavel Shilovsky wrote:
> It's not possible with the current API to do it through open syscall.
> Another possibility is to look at /proc/locks. But I think we really
> need O_DELETE flag that will force a file to be removed on close - we
> will be able to do O_DENYDELETE checks atomically.
I don't depend on this at open time. I can do it later with
some syscall, that's fine. I just want to find a way to do
it correctly. The problem is -- you can't "try" an unlink.
So we have to probe whether we can unlink. And opening for
O_DENYDELETE by no means says we *will* unlink. We just have
to keep the option to do it exclusively.
With best regards,
Volker
--
SerNet GmbH, Bahnhofsallee 1b, 37081 Göttingen
phone: +49-551-370000-0, fax: +49-551-370000-9
AG Göttingen, HRB 2816, GF: Dr. Johannes Loxen
http://www.sernet.de, mailto:kontakt-3ekOc4rQMZmzQB+pC5nmwQ@public.gmane.org
WARNING: multiple messages have this Message-ID (diff)
From: Volker Lendecke <Volker.Lendecke@SerNet.DE>
To: Pavel Shilovsky <piastry@etersoft.ru>
Cc: Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-cifs <linux-cifs@vger.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Linux NFS Mailing list <linux-nfs@vger.kernel.org>,
wine-devel@winehq.org
Subject: Re: [PATCH v7 0/7] Add O_DENY* support for VFS and CIFS/NFS
Date: Tue, 21 Jan 2014 15:17:08 +0100
Date: Tue, 21 Jan 2014 15:17:08 +0100 [thread overview]
Message-ID: <E1W5c8k-0036ba-7A@intern.SerNet.DE> (raw)
In-Reply-To: <CAKywueQng9=u1YYwkYGCunWW8RBhARhJjEhBcoA6CKF6TrKSBg@mail.gmail.com>
On Tue, Jan 21, 2014 at 05:31:39PM +0400, Pavel Shilovsky wrote:
> It's not possible with the current API to do it through open syscall.
> Another possibility is to look at /proc/locks. But I think we really
> need O_DELETE flag that will force a file to be removed on close - we
> will be able to do O_DENYDELETE checks atomically.
I don't depend on this at open time. I can do it later with
some syscall, that's fine. I just want to find a way to do
it correctly. The problem is -- you can't "try" an unlink.
So we have to probe whether we can unlink. And opening for
O_DENYDELETE by no means says we *will* unlink. We just have
to keep the option to do it exclusively.
With best regards,
Volker
--
SerNet GmbH, Bahnhofsallee 1b, 37081 Göttingen
phone: +49-551-370000-0, fax: +49-551-370000-9
AG Göttingen, HRB 2816, GF: Dr. Johannes Loxen
http://www.sernet.de, mailto:kontakt@sernet.de
next prev parent reply other threads:[~2014-01-21 14:17 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-17 10:07 [PATCH v7 0/7] Add O_DENY* support for VFS and CIFS/NFS Pavel Shilovsky
2014-01-17 10:07 ` Pavel Shilovsky
2014-01-17 10:07 ` [PATCH v7 1/7] VFS: Introduce new O_DENY* open flags Pavel Shilovsky
2014-01-17 10:07 ` Pavel Shilovsky
[not found] ` <1389953232-9428-2-git-send-email-piastry-7qunaywFIewox3rIn2DAYQ@public.gmane.org>
2014-01-17 18:18 ` One Thousand Gnomes
2014-01-17 18:18 ` One Thousand Gnomes
[not found] ` <20140117181847.6c1f3831-mUKnrFFms3BCCTY1wZZT65JpZx93mCW/@public.gmane.org>
2014-01-20 10:45 ` Pavel Shilovsky
2014-01-20 10:45 ` Pavel Shilovsky
[not found] ` <CAKywueT=JsTkNC+w-vrN0ftam7F8Eqb8DXJ0w2G4q9vnt0hVNQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-20 13:34 ` One Thousand Gnomes
2014-01-20 13:34 ` One Thousand Gnomes
[not found] ` <20140120133424.09328108-mUKnrFFms3BCCTY1wZZT65JpZx93mCW/@public.gmane.org>
2014-01-21 13:19 ` Pavel Shilovsky
2014-01-21 13:19 ` Pavel Shilovsky
2014-02-01 13:57 ` Jeff Layton
2014-02-01 13:57 ` Jeff Layton
2014-02-01 13:20 ` Jeff Layton
2014-02-01 13:20 ` Jeff Layton
[not found] ` <20140201082020.117bf3b3-9yPaYZwiELC+kQycOl6kW4xkIHaj4LzF@public.gmane.org>
2014-02-04 12:03 ` Pavel Shilovsky
2014-02-04 12:03 ` Pavel Shilovsky
[not found] ` <CAKywueTAvxVV4+h3Vf3XLE+KnpPh_9zRGkHChTUR8x=i8zfDTw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-02-04 12:21 ` Jeff Layton
2014-02-04 12:21 ` Jeff Layton
[not found] ` <1389953232-9428-1-git-send-email-piastry-7qunaywFIewox3rIn2DAYQ@public.gmane.org>
2014-01-17 10:07 ` [PATCH v7 2/7] VFS: Add O_DENYDELETE support for VFS Pavel Shilovsky
2014-01-17 10:07 ` Pavel Shilovsky
2014-01-20 8:14 ` [PATCH v7 0/7] Add O_DENY* support for VFS and CIFS/NFS Volker Lendecke
2014-01-20 8:14 ` Volker Lendecke
2014-01-20 10:20 ` Pavel Shilovsky
[not found] ` <CAKywueQwfFASPpevO8Z-_xwZqRjkzfkOceQJDya8D7FDW+UmMg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-20 10:31 ` Volker Lendecke
2014-01-20 10:31 ` Volker Lendecke
[not found] ` <E1W5C8U-000ozD-Ku-dqLtpHMqGvUyWpdLl23E4A@public.gmane.org>
2014-01-21 13:31 ` Pavel Shilovsky
2014-01-21 13:31 ` Pavel Shilovsky
[not found] ` <CAKywueQng9=u1YYwkYGCunWW8RBhARhJjEhBcoA6CKF6TrKSBg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-21 14:17 ` Volker Lendecke [this message]
2014-01-21 14:17 ` Volker Lendecke
2014-01-31 15:51 ` Pavel Shilovsky
2014-01-31 15:51 ` Pavel Shilovsky
2014-01-17 10:07 ` [PATCH v7 3/7] locks: Disable LOCK_MAND support for MS_SHARELOCK mounts Pavel Shilovsky
2014-01-17 10:07 ` Pavel Shilovsky
2014-01-17 10:07 ` [PATCH v7 4/7] CIFS: Add O_DENY* open flags support Pavel Shilovsky
2014-01-17 10:07 ` [PATCH v7 5/7] NFSD: Pass share reservations flags to VFS Pavel Shilovsky
2014-01-17 10:07 ` [PATCH v7 6/7] NFSv4: Add deny state handling for nfs4_state struct Pavel Shilovsky
2014-01-17 10:07 ` [PATCH v7 7/7] NFSv4: Add O_DENY* open flags support Pavel Shilovsky
2014-01-17 18:43 ` [PATCH v7 0/7] Add O_DENY* support for VFS and CIFS/NFS Frank Filz
2014-01-20 9:56 ` Pavel Shilovsky
2014-01-20 9:56 ` Pavel Shilovsky
[not found] ` <CAKywueTOi-WPpgH7x3VK7EkGJXE8fHUqcLgSUm6o6UA+uaQtjA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-27 19:49 ` Frank Filz
2014-01-27 19:49 ` Frank Filz
-- strict thread matches above, loose matches on Subject: below --
2013-07-01 16:49 Pavel Shilovsky
2013-07-01 16:49 ` Pavel Shilovsky
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