[v36,25/33] LSM: Add a function to report multiple LSMs

Message ID	20220609230146.319210-26-casey@schaufler-ca.com (mailing list archive)
State	Superseded
Delegated to:	Paul Moore
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 v36 25/33] LSM: Add a function to report multiple LSMs Date: Thu, 9 Jun 2022 16:01:38 -0700 Message-Id: <20220609230146.319210-26-casey@schaufler-ca.com> In-Reply-To: <20220609230146.319210-1-casey@schaufler-ca.com> References: <20220609230146.319210-1-casey@schaufler-ca.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	LSM: Module stacking for AppArmor \| expand [v36,00/33] LSM: Module stacking for AppArmor [v36,01/33] integrity: disassociate ima_filter_rule from security_audit_rule [v36,02/33] LSM: Infrastructure management of the sock security [v36,03/33] LSM: Add the lsmblob data structure. [v36,04/33] LSM: provide lsm name and id slot mappings [v36,05/33] IMA: avoid label collisions with stacked LSMs [v36,06/33] LSM: Use lsmblob in security_audit_rule_match [v36,07/33] LSM: Use lsmblob in security_kernel_act_as [v36,08/33] LSM: Use lsmblob in security_secctx_to_secid [v36,09/33] LSM: Use lsmblob in security_secid_to_secctx [v36,10/33] LSM: Use lsmblob in security_ipc_getsecid [v36,11/33] LSM: Use lsmblob in security_current_getsecid [v36,12/33] LSM: Use lsmblob in security_inode_getsecid [v36,13/33] LSM: Use lsmblob in security_cred_getsecid [v36,14/33] LSM: Specify which LSM to display [v36,15/33] LSM: Ensure the correct LSM context releaser [v36,16/33] LSM: Use lsmcontext in security_secid_to_secctx [v36,17/33] LSM: Use lsmcontext in security_inode_getsecctx [v36,18/33] LSM: Use lsmcontext in security_dentry_init_security [v36,19/33] LSM: security_secid_to_secctx in netlink netfilter [v36,20/33] NET: Store LSM netlabel data in a lsmblob [v36,21/33] binder: Pass LSM identifier for confirmation [v36,22/33] LSM: Extend security_secid_to_secctx to include module selection [v36,23/33] Audit: Keep multiple LSM data in audit_names [v36,24/33] Audit: Create audit_stamp structure [v36,25/33] LSM: Add a function to report multiple LSMs [v36,26/33] Audit: Allow multiple records in an audit_buffer [v36,27/33] Audit: Add record for multiple task security contexts [v36,28/33] audit: multiple subject lsm values for netlabel [v36,29/33] Audit: Add record for multiple object contexts [v36,30/33] netlabel: Use a struct lsmblob in audit data [v36,31/33] LSM: Removed scaffolding function lsmcontext_init [v36,32/33] LSM: Add /proc attr entry for full LSM context [v36,33/33] AppArmor: Remove the exclusive flag

Message ID

20220609230146.319210-26-casey@schaufler-ca.com (mailing list archive)

State

Superseded

Delegated to:

Paul Moore

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 v36 25/33] LSM: Add a function to report multiple LSMs
Date: Thu,  9 Jun 2022 16:01:38 -0700
Message-Id: <20220609230146.319210-26-casey@schaufler-ca.com>
In-Reply-To: <20220609230146.319210-1-casey@schaufler-ca.com>
References: <20220609230146.319210-1-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 June 9, 2022, 11:01 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>
Acked-by: Paul Moore <paul@paul-moore.com>
Reviewed-by: John Johansen <john.johansen@canonical.com>
---
 include/linux/security.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/linux/security.h b/include/linux/security.h
index 1efd34a8f75f..4cf551133e99 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -234,6 +234,15 @@  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

[v36,25/33] LSM: Add a function to report multiple LSMs

Commit Message

Patch