diff mbox series

[v38,31/39] LSM: Add a function to report multiple LSMs

Message ID	20220927195421.14713-32-casey@schaufler-ca.com (mailing list archive)
State	Changes Requested
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, paul@paul-moore.com, linux-security-module@vger.kernel.org Cc: casey@schaufler-ca.com, linux-audit@redhat.com, jmorris@namei.org, selinux@vger.kernel.org, keescook@chromium.org, john.johansen@canonical.com, penguin-kernel@i-love.sakura.ne.jp, stephen.smalley.work@gmail.com, linux-kernel@vger.kernel.org Subject: [PATCH v38 31/39] LSM: Add a function to report multiple LSMs Date: Tue, 27 Sep 2022 12:54:13 -0700 Message-Id: <20220927195421.14713-32-casey@schaufler-ca.com> In-Reply-To: <20220927195421.14713-1-casey@schaufler-ca.com> References: <20220927195421.14713-1-casey@schaufler-ca.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	LSM: Module stacking for AppArmor \| expand [v38,00/39] LSM: Module stacking for AppArmor [v38,01/39] LSM: Identify modules by more than name [v38,02/39] LSM: Add an LSM identifier for external use [v38,03/39] LSM: Identify the process attributes for each module [v38,04/39] LSM: Maintain a table of LSM attribute data [v38,05/39] proc: Use lsmids instead of lsm names for attrs [v38,06/39] LSM: lsm_self_attr syscall for LSM self attributes [v38,07/39] integrity: disassociate ima_filter_rule from security_audit_rule [v38,08/39] LSM: Infrastructure management of the sock security [v38,09/39] LSM: Add the lsmblob data structure. [v38,10/39] LSM: provide lsm name and id slot mappings [v38,11/39] IMA: avoid label collisions with stacked LSMs [v38,12/39] LSM: Use lsmblob in security_audit_rule_match [v38,13/39] LSM: Use lsmblob in security_kernel_act_as [v38,14/39] LSM: Use lsmblob in security_secctx_to_secid [v38,15/39] LSM: Use lsmblob in security_secid_to_secctx [v38,16/39] LSM: Use lsmblob in security_ipc_getsecid [v38,17/39] LSM: Use lsmblob in security_current_getsecid [v38,18/39] LSM: Use lsmblob in security_inode_getsecid [v38,19/39] LSM: Use lsmblob in security_cred_getsecid [v38,20/39] LSM: Specify which LSM to display [v38,21/39] LSM: Ensure the correct LSM context releaser [v38,22/39] LSM: Use lsmcontext in security_secid_to_secctx [v38,23/39] LSM: Use lsmcontext in security_inode_getsecctx [v38,24/39] Use lsmcontext in security_dentry_init_security [v38,25/39] LSM: security_secid_to_secctx in netlink netfilter [v38,26/39] NET: Store LSM netlabel data in a lsmblob [v38,27/39] binder: Pass LSM identifier for confirmation [v38,28/39] LSM: security_secid_to_secctx module selection [v38,29/39] Audit: Keep multiple LSM data in audit_names [v38,30/39] Audit: Create audit_stamp structure [v38,31/39] LSM: Add a function to report multiple LSMs [v38,32/39] Audit: Allow multiple records in an audit_buffer [v38,33/39] Audit: Add record for multiple task security contexts [v38,34/39] audit: multiple subject lsm values for netlabel [v38,35/39] Audit: Add record for multiple object contexts [v38,36/39] netlabel: Use a struct lsmblob in audit data [v38,37/39] LSM: Removed scaffolding function lsmcontext_init [v38,38/39] AppArmor: Remove the exclusive flag [v38,39/39] LSM: Create lsm_module_list system call

Commit Message

Casey Schaufler Sept. 27, 2022, 7:54 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 mbox series

Patch

diff --git a/include/linux/security.h b/include/linux/security.h
index 170b303e9122..c190b9189287 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -262,6 +262,15 @@  static inline const char *lsm_slot_to_name(int slot)
 }
 #endif
 
+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