linux-kernel - Re: [RFC PATCH 0/5] locks: implement "filp-private" (aka UNPOSIX) locks

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: <B0205F0B-0AC4-4B80-91C2-E3BD2D4B8E81@gmail.com>
Date:	Fri, 11 Oct 2013 20:18:58 -0400
From:	Scott Lovenberg <scott.lovenberg@...il.com>
To:	Jeremy Allison <jra@...ba.org>
Cc:	Jeff Layton <jlayton@...hat.com>,
	Andreas Dilger <adilger@...ger.ca>,
	"linux-fsdevel@...r.kernel.org Devel" <linux-fsdevel@...r.kernel.org>,
	Ganesha NFS List <nfs-ganesha-devel@...ts.sourceforge.net>,
	"samba-technical@...ts.samba.org" <samba-technical@...ts.samba.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 0/5] locks: implement "filp-private" (aka UNPOSIX) locks


On Oct 11, 2013, at 19:49, Jeremy Allison <jra@...ba.org> wrote:

> On Fri, 11 Oct 2013 15:36:43 -0600 Andreas Dilger <adilger@...ger.ca> wrote:
>>> 
>>> At this point, my main questions are:
>>> 
>>> 1) does this look useful, particularly for fileserver implementors?
> 
> Yes from the Samba perspective. We'll have to keep the old
> code around for compatibility with non-Linux OS'es, but this
> will allow Linux Samba to short-circuit a bunch of logic
> we have to get around the insane POSIX locking semantics
> on close.
> 
> Jeremy.

>From the peanut gallery, IIRC from college a few years back, wasn't the POSIX file locking stuff passed by all parties because they intended to do their own thing regardless of the standard?  The reason that all locks are blown on a release is mostly because there were already implementations and no one wanted to push the issue, or am I misunderstanding/forgetting the history of file locks in POSIX?--
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/