From: Rob Landley <rob@landley.net>
To: Mimi Zohar <zohar@linux.ibm.com>,
Dominik Brodowski <linux@dominikbrodowski.net>,
Roberto Sassu <roberto.sassu@huawei.com>
Cc: viro@zeniv.linux.org.uk, 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: Sun, 12 May 2019 12:05:48 -0500 [thread overview]
Message-ID: <dca50ee1-62d8-2256-6fdb-9a786e6cea5a@landley.net> (raw)
In-Reply-To: <1557665567.10635.222.camel@linux.ibm.com>
On 5/12/19 7:52 AM, Mimi Zohar wrote:
> On Sun, 2019-05-12 at 11:17 +0200, Dominik Brodowski wrote:
>> On Thu, May 09, 2019 at 01:24:17PM +0200, Roberto Sassu wrote:
>>> This proposal consists in marshaling pathnames and xattrs in a file called
>>> .xattr-list. They are unmarshaled by the CPIO parser after all files have
>>> been extracted.
>>
>> Couldn't this parsing of the .xattr-list file and the setting of the xattrs
>> be done equivalently by the initramfs' /init? Why is kernel involvement
>> actually required here?
>
> It's too late. The /init itself should be signed and verified.
If the initramfs cpio.gz image was signed and verified by the extractor, how is
the init in it _not_ verified?
Rob
next prev parent reply other threads:[~2019-05-12 17:05 UTC|newest]
Thread overview: 58+ 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 ` [PATCH v2 1/3] fs: add ksys_lsetxattr() wrapper 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 ` [PATCH v2 3/3] initramfs: introduce do_readxattrs() Roberto Sassu
2019-05-10 21:33 ` Jann Horn
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 11:49 ` Mimi Zohar
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 [this message]
2019-05-12 19:43 ` Arvind Sankar
2019-05-13 7:49 ` Roberto Sassu
2019-05-13 9:07 ` Rob Landley
2019-05-13 12:08 ` Mimi Zohar
2019-05-13 12:47 ` Roberto Sassu
2019-05-13 17:20 ` Arvind Sankar
2019-05-13 17:51 ` Arvind Sankar
2019-05-13 17:52 ` Arvind Sankar
2019-05-13 18:36 ` Mimi Zohar
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 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
2019-05-15 1:00 ` Arvind Sankar
2019-05-14 15:19 ` Andy Lutomirski
2019-05-14 16:33 ` Roberto Sassu
2019-05-14 16:58 ` Greg KH
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 16:08 ` Arvind Sankar
2019-05-15 17:06 ` Roberto Sassu
2019-05-16 5:29 ` Arvind Sankar
2019-05-16 11:42 ` Roberto Sassu
2019-05-16 13:31 ` Mimi Zohar
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