[v33,24/29] LSM: Add a function to report multiple LSMs

Message ID	20220310234632.16194-25-casey@schaufler-ca.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <linux-security-module-owner@kernel.org> From: Casey Schaufler <casey@schaufler-ca.com> To: casey.schaufler@intel.com, jmorris@namei.org, linux-security-module@vger.kernel.org, selinux@vger.kernel.org Cc: casey@schaufler-ca.com, linux-audit@redhat.com, keescook@chromium.org, john.johansen@canonical.com, penguin-kernel@i-love.sakura.ne.jp, paul@paul-moore.com, stephen.smalley.work@gmail.com, linux-kernel@vger.kernel.org Subject: [PATCH v33 24/29] LSM: Add a function to report multiple LSMs Date: Thu, 10 Mar 2022 15:46:27 -0800 Message-Id: <20220310234632.16194-25-casey@schaufler-ca.com> In-Reply-To: <20220310234632.16194-1-casey@schaufler-ca.com> References: <20220310234632.16194-1-casey@schaufler-ca.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	LSM: Module stacking for AppArmor \| expand [v33,00/29] LSM: Module stacking for AppArmor [v33,01/29] integrity: disassociate ima_filter_rule from security_audit_rule [v33,02/29] LSM: Infrastructure management of the sock security [v33,03/29] LSM: Add the lsmblob data structure. [v33,04/29] LSM: provide lsm name and id slot mappings [v33,05/29] IMA: avoid label collisions with stacked LSMs [v33,06/29] LSM: Use lsmblob in security_audit_rule_match [v33,07/29] LSM: Use lsmblob in security_kernel_act_as [v33,08/29] LSM: Use lsmblob in security_secctx_to_secid [v33,09/29] LSM: Use lsmblob in security_secid_to_secctx [v33,10/29] LSM: Use lsmblob in security_ipc_getsecid [v33,11/29] LSM: Use lsmblob in security_current_getsecid [v33,12/29] LSM: Use lsmblob in security_inode_getsecid [v33,13/29] LSM: Use lsmblob in security_cred_getsecid [v33,14/29] LSM: Specify which LSM to display [v33,15/29] LSM: Ensure the correct LSM context releaser [v33,16/29] LSM: Use lsmcontext in security_secid_to_secctx [v33,17/29] LSM: Use lsmcontext in security_inode_getsecctx [v33,18/29] LSM: security_secid_to_secctx in netlink netfilter [v33,19/29] NET: Store LSM netlabel data in a lsmblob [v33,20/29] binder: Pass LSM identifier for confirmation [v33,21/29] LSM: Extend security_secid_to_secctx to include module selection [v33,22/29] Audit: Keep multiple LSM data in audit_names [v33,23/29] Audit: Create audit_stamp structure [v33,24/29] LSM: Add a function to report multiple LSMs [v33,25/29] Audit: Allow multiple records in an audit_buffer [v33,26/29] Audit: Add record for multiple task security contexts [v33,27/29] Audit: Add record for multiple object security contexts [v33,28/29] LSM: Add /proc attr entry for full LSM context [v33,29/29] AppArmor: Remove the exclusive flag

Message ID

20220310234632.16194-25-casey@schaufler-ca.com (mailing list archive)

State

New, archived

Headers

From: Casey Schaufler <casey@schaufler-ca.com>
To: casey.schaufler@intel.com, jmorris@namei.org,
        linux-security-module@vger.kernel.org, selinux@vger.kernel.org
Cc: casey@schaufler-ca.com, linux-audit@redhat.com,
        keescook@chromium.org, john.johansen@canonical.com,
        penguin-kernel@i-love.sakura.ne.jp, paul@paul-moore.com,
        stephen.smalley.work@gmail.com, linux-kernel@vger.kernel.org
Subject: [PATCH v33 24/29] LSM: Add a function to report multiple LSMs
Date: Thu, 10 Mar 2022 15:46:27 -0800
Message-Id: <20220310234632.16194-25-casey@schaufler-ca.com>
In-Reply-To: <20220310234632.16194-1-casey@schaufler-ca.com>
References: <20220310234632.16194-1-casey@schaufler-ca.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Series

LSM: Module stacking for AppArmor | expand

Commit Message

Casey Schaufler March 10, 2022, 11:46 p.m. UTC

Add a new boolean function lsm_multiple_contexts() to
identify when multiple security modules provide security
context strings.

Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
---
 include/linux/security.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/linux/security.h b/include/linux/security.h
index 6dbdfd12fd79..13bc38970498 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -232,6 +232,15 @@  static inline bool lsmblob_equal(const struct lsmblob *bloba,
 extern int lsm_name_to_slot(char *name);
 extern const char *lsm_slot_to_name(int slot);
 
+static inline bool lsm_multiple_contexts(void)
+{
+#ifdef CONFIG_SECURITY
+	return lsm_slot_to_name(1) != NULL;
+#else
+	return false;
+#endif
+}
+
 /**
  * lsmblob_value - find the first non-zero value in an lsmblob structure.
  * @blob: Pointer to the data

[v33,24/29] LSM: Add a function to report multiple LSMs

Commit Message

Patch