From: Stefan Berger <stefanb@linux.ibm.com>
To: jejb@linux.ibm.com, linux-integrity@vger.kernel.org
Cc: zohar@linux.ibm.com, serge@hallyn.com,
christian.brauner@ubuntu.com, containers@lists.linux.dev,
dmitry.kasatkin@gmail.com, ebiederm@xmission.com,
krzysztof.struczynski@huawei.com, roberto.sassu@huawei.com,
mpeters@redhat.com, lhinds@redhat.com, lsturman@redhat.com,
puiterwi@redhat.com, jamjoom@us.ibm.com,
linux-kernel@vger.kernel.org, paul@paul-moore.com,
rgb@redhat.com, linux-security-module@vger.kernel.org,
jmorris@namei.org
Subject: Re: [RFC 20/20] ima: Setup securityfs_ns for IMA namespace
Date: Wed, 1 Dec 2021 19:02:42 -0500 [thread overview]
Message-ID: <0303c534-d54b-d032-88a6-11e1fe13748f@linux.ibm.com> (raw)
In-Reply-To: <29770c86261bbc7f6380c7c355ecb6a1c9f40980.camel@linux.ibm.com>
On 12/1/21 17:19, James Bottomley wrote:
> On Wed, 2021-12-01 at 17:09 -0500, Stefan Berger wrote:
>> On 12/1/21 17:01, James Bottomley wrote:
>>
>>
>>
>>> I don't see this because my setup for everything is triggered off
>>> the first use of the IMA namespace. You'd need to have some type
>>> of lazy setup of the inodes as well to give unshare time to install
>>> the uid/gidmappings.
>> What could trigger that? A callback while mounting - but I am not
>> sure where to hook into then. What is your mechanisms to trigger as
>> the 'first use of the IMA namespace'? What is 'use' here?
> use for me is first event that gets logged in the new namespace.
>
> However, I don't think this is a good trigger, it's just a random thing
> I was playing with. Perhaps trigger on mount is a good one ... that
> could be done from securityfs_ns_init_fs_context?
Yes, this here does the trick now for late init also with runc. The late
uid adjustments are gone.
static int securityfs_ns_init_fs_context(struct fs_context *fc)
{
int rc;
if (fc->user_ns->ima_ns->late_fs_init) {
rc = fc->user_ns->ima_ns->late_fs_init(fc->user_ns);
if (rc)
return rc;
}
fc->ops = &securityfs_ns_context_ops;
return 0;
}
Stefan
>
> James
>
>
>
>
next prev parent reply other threads:[~2021-12-02 0:03 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-30 16:06 [RFC 00/20] ima: Namespace IMA with audit support in IMA-ns Stefan Berger
2021-11-30 16:06 ` [RFC 01/20] ima: Add IMA namespace support Stefan Berger
2021-11-30 16:06 ` [RFC 02/20] ima: Define ns_status for storing namespaced iint data Stefan Berger
2021-11-30 16:06 ` [RFC 03/20] ima: Namespace audit status flags Stefan Berger
2021-11-30 16:06 ` [RFC 04/20] ima: Move delayed work queue and variables into ima_namespace Stefan Berger
2021-11-30 16:06 ` [RFC 05/20] ima: Move IMA's keys queue related " Stefan Berger
2021-11-30 16:06 ` [RFC 06/20] ima: Move policy " Stefan Berger
2021-11-30 16:06 ` [RFC 07/20] ima: Move ima_htable " Stefan Berger
2021-11-30 16:06 ` [RFC 08/20] ima: Move measurement list related variables " Stefan Berger
2021-12-02 12:46 ` James Bottomley
2021-12-02 13:41 ` Stefan Berger
2021-12-02 16:29 ` James Bottomley
2021-12-02 16:45 ` Stefan Berger
2021-12-02 17:44 ` James Bottomley
2021-12-02 18:03 ` Stefan Berger
2021-12-02 20:03 ` James Bottomley
2021-11-30 16:06 ` [RFC 09/20] ima: Only accept AUDIT rules for IMA non-init_ima_ns namespaces for now Stefan Berger
2021-11-30 16:06 ` [RFC 10/20] ima: Implement hierarchical processing of file accesses Stefan Berger
2021-11-30 16:06 ` [RFC 11/20] securityfs: Prefix global variables with securityfs_ Stefan Berger
2021-11-30 16:06 ` [RFC 12/20] securityfs: Pass static variables as parameters from top level functions Stefan Berger
2021-11-30 16:06 ` [RFC 13/20] securityfs: Build securityfs_ns for namespacing support Stefan Berger
2021-12-02 13:35 ` Christian Brauner
2021-12-02 13:47 ` Stefan Berger
2021-11-30 16:06 ` [RFC 14/20] ima: Move some IMA policy and filesystem related variables into ima_namespace Stefan Berger
2021-11-30 16:06 ` [RFC 15/20] capabilities: Introduce CAP_INTEGRITY_ADMIN Stefan Berger
2021-11-30 17:27 ` Casey Schaufler
2021-11-30 17:41 ` Stefan Berger
2021-11-30 17:50 ` Casey Schaufler
2021-11-30 16:06 ` [RFC 16/20] ima: Use ns_capable() for namespace policy access Stefan Berger
2021-11-30 16:06 ` [RFC 17/20] ima: Use integrity_admin_ns_capable() to check corresponding capability Stefan Berger
2021-12-01 16:58 ` James Bottomley
2021-12-01 17:35 ` Stefan Berger
2021-12-01 19:29 ` James Bottomley
2021-12-02 7:16 ` Denis Semakin
2021-12-02 12:33 ` James Bottomley
2021-12-02 17:54 ` Stefan Berger
2021-12-02 12:59 ` Christian Brauner
2021-12-02 13:01 ` Christian Brauner
2021-12-02 15:58 ` Casey Schaufler
2021-11-30 16:06 ` [RFC 18/20] userns: Introduce a refcount variable for calling early teardown function Stefan Berger
2021-11-30 16:06 ` [RFC 19/20] ima/userns: Define early teardown function for IMA namespace Stefan Berger
2021-11-30 16:06 ` [RFC 20/20] ima: Setup securityfs_ns " Stefan Berger
2021-12-01 17:56 ` James Bottomley
2021-12-01 18:11 ` Stefan Berger
2021-12-01 19:21 ` James Bottomley
2021-12-01 20:25 ` Stefan Berger
2021-12-01 21:11 ` James Bottomley
2021-12-01 21:34 ` Stefan Berger
2021-12-01 22:01 ` James Bottomley
2021-12-01 22:09 ` Stefan Berger
2021-12-01 22:19 ` James Bottomley
2021-12-02 0:02 ` Stefan Berger [this message]
2021-12-02 13:18 ` Christian Brauner
2021-12-02 13:52 ` Stefan Berger
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