From: Joel Becker <Joel.Becker@oracle.com>
To: Chris Mason <chris.mason@oracle.com>
Cc: Theodore Tso <tytso@mit.edu>, Stephen Smalley <sds@tycho.nsa.gov>,
James Morris <jmorris@namei.org>,
lsm <linux-security-module@vger.kernel.org>,
linux-fsdevel@vger.kernel.org
Subject: Re: New reflink(2) syscall
Date: Tue, 5 May 2009 10:13:31 -0700 [thread overview]
Message-ID: <20090505171331.GG7835@mail.oracle.com> (raw)
In-Reply-To: <1241542618.7244.76.camel@think.oraclecorp.com>
On Tue, May 05, 2009 at 12:56:58PM -0400, Chris Mason wrote:
> On Tue, 2009-05-05 at 09:47 -0700, Joel Becker wrote:
> > Because then you have to change the entire security structure,
> > and you aren't a snapshot anymore.
>
> I won't argue with the security part, but the snapshot part could just
> as easily be defined by the data and not the inode.
In ZFS/btrfs/WAFL/disk array snaps, if you go back to a snap
does the selinux context or acls or equivalent appear different? I don't
think so, and I expect people would be really upset if they had to know
all the restorecon/acl-fu to get it right.
Joel
--
"Under capitalism, man exploits man. Under Communism, it's just
the opposite."
- John Kenneth Galbraith
Joel Becker
Principal Software Developer
Oracle
E-mail: joel.becker@oracle.com
Phone: (650) 506-8127
next prev parent reply other threads:[~2009-05-05 17:14 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <alpine.LRH.2.00.0905041655220.21713@tundra.namei.org>
[not found] ` <1241443016.3023.51.camel@localhost.localdomain>
2009-05-04 15:35 ` New reflink(2) syscall James Morris
2009-05-04 16:59 ` Stephen Smalley
2009-05-04 17:49 ` Joel Becker
2009-05-05 18:00 ` Joel Becker
2009-05-05 18:41 ` Stephen Smalley
2009-05-05 19:15 ` Joel Becker
2009-05-05 19:14 ` Stephen Smalley
2009-05-05 19:33 ` Joel Becker
2009-05-05 22:15 ` James Morris
2009-05-05 22:31 ` Joel Becker
2009-05-06 11:23 ` Stephen Smalley
[not found] ` <20090504163514.GB31249@mail.oracle.com>
[not found] ` <1241458669.3023.203.camel@localhost.localdomain>
2009-05-04 18:08 ` Joel Becker
2009-05-04 19:30 ` Stephen Smalley
2009-05-04 21:03 ` Joel Becker
2009-05-04 21:30 ` Joel Becker
2009-05-05 11:44 ` Stephen Smalley
2009-05-05 16:46 ` Joel Becker
2009-05-04 23:13 ` Theodore Tso
2009-05-05 16:47 ` Joel Becker
2009-05-05 16:56 ` Chris Mason
2009-05-05 17:13 ` Joel Becker [this message]
2009-05-05 17:34 ` Theodore Tso
2009-05-05 17:44 ` Stephen Smalley
2009-05-05 17:56 ` Joel Becker
2009-05-05 18:21 ` Theodore Tso
2009-05-06 4:27 ` Casey Schaufler
2009-05-06 4:42 ` Jamie Lokier
2009-05-06 5:38 ` Casey Schaufler
2009-05-06 7:12 ` Theodore Tso
2009-05-05 22:45 ` Jamie Lokier
2009-05-06 4:08 ` Casey Schaufler
2009-05-06 4:28 ` Jamie Lokier
2009-05-06 11:25 ` Stephen Smalley
2009-05-05 17:36 ` Chris Mason
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