From: Mimi Zohar <zohar@linux.ibm.com>
To: Roberto Sassu <roberto.sassu@huawei.com>,
Rob Landley <rob@landley.net>,
viro@zeniv.linux.org.uk
Cc: linux-security-module@vger.kernel.org,
linux-integrity@vger.kernel.org, initramfs@vger.kernel.org,
linux-api@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, zohar@linux.vnet.ibm.com,
silviu.vlasceanu@huawei.com, dmitry.kasatkin@huawei.com,
takondra@cisco.com, kamensky@cisco.com, hpa@zytor.com,
arnd@arndb.de, james.w.mcmechan@gmail.com
Subject: Re: [PATCH v2 0/3] initramfs: add support for xattrs in the initial ram disk
Date: Fri, 10 May 2019 07:49:31 -0400 [thread overview]
Message-ID: <1557488971.10635.102.camel@linux.ibm.com> (raw)
In-Reply-To: <bf0d02fc-d6ce-ef1d-bb7d-7ca14432c6fd@huawei.com>
On Fri, 2019-05-10 at 08:56 +0200, Roberto Sassu wrote:
> On 5/9/2019 8:34 PM, Rob Landley wrote:
> > On 5/9/19 6:24 AM, Roberto Sassu wrote:
> >> The difference with another proposal
> >> (https://lore.kernel.org/patchwork/cover/888071/) is that xattrs can be
> >> included in an image without changing the image format, as opposed to
> >> defining a new one. As seen from the discussion, if a new format has to be
> >> defined, it should fix the issues of the existing format, which requires
> >> more time.
> >
> > So you've explicitly chosen _not_ to address Y2038 while you're there.
>
> Can you be more specific?
Right, this patch set avoids incrementing the CPIO magic number and
the resulting changes required (eg. increasing the timestamp field
size), by including a file with the security xattrs in the CPIO. Â In
either case, including the security xattrs in the initramfs header or
as a separate file, the initramfs, itself, needs to be signed.
Mimi
WARNING: multiple messages have this Message-ID (diff)
From: Mimi Zohar <zohar@linux.ibm.com>
To: Roberto Sassu <roberto.sassu@huawei.com>,
Rob Landley <rob@landley.net>,
viro@zeniv.linux.org.uk
Cc: linux-security-module@vger.kernel.org,
linux-integrity@vger.kernel.org, initramfs@vger.kernel.org,
linux-api@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, zohar@linux.vnet.ibm.com,
silviu.vlasceanu@huawei.com, dmitry.kasatkin@huawei.com,
takondra@cisco.com, kamensky@cisco.com, hpa@zytor.com,
arnd@arndb.de, james.w.mcmechan@gmail.com
Subject: Re: [PATCH v2 0/3] initramfs: add support for xattrs in the initial ram disk
Date: Fri, 10 May 2019 07:49:31 -0400 [thread overview]
Message-ID: <1557488971.10635.102.camel@linux.ibm.com> (raw)
In-Reply-To: <bf0d02fc-d6ce-ef1d-bb7d-7ca14432c6fd@huawei.com>
On Fri, 2019-05-10 at 08:56 +0200, Roberto Sassu wrote:
> On 5/9/2019 8:34 PM, Rob Landley wrote:
> > On 5/9/19 6:24 AM, Roberto Sassu wrote:
> >> The difference with another proposal
> >> (https://lore.kernel.org/patchwork/cover/888071/) is that xattrs can be
> >> included in an image without changing the image format, as opposed to
> >> defining a new one. As seen from the discussion, if a new format has to be
> >> defined, it should fix the issues of the existing format, which requires
> >> more time.
> >
> > So you've explicitly chosen _not_ to address Y2038 while you're there.
>
> Can you be more specific?
Right, this patch set avoids incrementing the CPIO magic number and
the resulting changes required (eg. increasing the timestamp field
size), by including a file with the security xattrs in the CPIO. In
either case, including the security xattrs in the initramfs header or
as a separate file, the initramfs, itself, needs to be signed.
Mimi
next prev parent reply other threads:[~2019-05-10 11:49 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-09 11:24 [PATCH v2 0/3] initramfs: add support for xattrs in the initial ram disk Roberto Sassu
2019-05-09 11:24 ` Roberto Sassu
2019-05-09 11:24 ` Roberto Sassu
2019-05-09 11:24 ` [PATCH v2 1/3] fs: add ksys_lsetxattr() wrapper Roberto Sassu
2019-05-09 11:24 ` Roberto Sassu
2019-05-10 21:28 ` Jann Horn
2019-05-09 11:24 ` [PATCH v2 2/3] initramfs: set extended attributes Roberto Sassu
2019-05-09 11:24 ` Roberto Sassu
2019-05-09 11:24 ` [PATCH v2 3/3] initramfs: introduce do_readxattrs() Roberto Sassu
2019-05-09 11:24 ` Roberto Sassu
2019-05-10 21:33 ` Jann Horn
2019-05-13 13:03 ` Roberto Sassu
2019-05-13 13:03 ` Roberto Sassu
2019-05-09 18:34 ` [PATCH v2 0/3] initramfs: add support for xattrs in the initial ram disk Rob Landley
2019-05-10 6:56 ` Roberto Sassu
2019-05-10 6:56 ` Roberto Sassu
2019-05-10 11:49 ` Mimi Zohar [this message]
2019-05-10 11:49 ` Mimi Zohar
2019-05-10 20:46 ` Rob Landley
2019-05-10 20:46 ` Rob Landley
2019-05-10 22:38 ` Mimi Zohar
2019-05-11 22:44 ` Andy Lutomirski
2019-05-12 4:04 ` Rob Landley
2019-05-12 4:12 ` Rob Landley
2019-05-12 9:17 ` Dominik Brodowski
2019-05-12 10:18 ` hpa
2019-05-12 15:31 ` Dominik Brodowski
2019-05-13 0:02 ` Mimi Zohar
2019-05-13 0:21 ` hpa
2019-05-13 0:23 ` hpa
2019-05-12 12:52 ` Mimi Zohar
2019-05-12 17:05 ` Rob Landley
2019-05-12 19:43 ` Arvind Sankar
2019-05-13 7:49 ` Roberto Sassu
2019-05-13 7:49 ` Roberto Sassu
2019-05-13 9:07 ` Rob Landley
2019-05-13 9:07 ` Rob Landley
2019-05-13 12:08 ` Mimi Zohar
2019-05-13 12:47 ` Roberto Sassu
2019-05-13 12:47 ` Roberto Sassu
2019-05-13 12:47 ` Roberto Sassu
2019-05-13 17:20 ` Arvind Sankar
2019-05-13 17:20 ` Arvind Sankar
2019-05-13 17:51 ` Arvind Sankar
2019-05-13 17:51 ` Arvind Sankar
2019-05-13 17:52 ` Arvind Sankar
2019-05-13 17:52 ` Arvind Sankar
2019-05-13 18:36 ` Mimi Zohar
2019-05-13 18:36 ` Mimi Zohar
2019-05-13 18:47 ` Arvind Sankar
2019-05-13 18:47 ` Arvind Sankar
2019-05-13 22:09 ` Mimi Zohar
2019-05-14 6:06 ` Rob Landley
2019-05-14 14:44 ` Arvind Sankar
2019-05-14 6:06 ` Rob Landley
2019-05-14 11:52 ` Roberto Sassu
2019-05-14 11:52 ` Roberto Sassu
2019-05-14 15:12 ` Rob Landley
2019-05-14 15:27 ` Arvind Sankar
2019-05-14 15:57 ` Arvind Sankar
2019-05-14 17:44 ` Roberto Sassu
2019-05-14 17:44 ` Roberto Sassu
2019-05-15 1:00 ` Arvind Sankar
2019-05-14 15:19 ` Andy Lutomirski
2019-05-14 16:33 ` Roberto Sassu
2019-05-14 16:33 ` Roberto Sassu
2019-05-14 16:58 ` Greg KH
2019-05-14 17:20 ` Roberto Sassu
2019-05-14 17:20 ` Roberto Sassu
2019-05-15 0:25 ` Arvind Sankar
2019-05-14 19:18 ` James Bottomley
2019-05-14 23:39 ` Rob Landley
2019-05-14 23:54 ` James Bottomley
2019-05-15 0:52 ` Arvind Sankar
2019-05-15 11:19 ` Roberto Sassu
2019-05-15 11:19 ` Roberto Sassu
2019-05-15 16:08 ` Arvind Sankar
2019-05-15 17:06 ` Roberto Sassu
2019-05-15 17:06 ` Roberto Sassu
2019-05-16 5:29 ` Arvind Sankar
2019-05-16 11:42 ` Roberto Sassu
2019-05-16 11:42 ` Roberto Sassu
2019-05-16 13:31 ` Mimi Zohar
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