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[v37,25/33] LSM: Add a function to report multiple LSMs

Message ID 20220628005611.13106-26-casey@schaufler-ca.com (mailing list archive)
State New
Delegated to: Paul Moore
Headers show
Series LSM: Module stacking for AppArmor | expand

Commit Message

Casey Schaufler June 28, 2022, 12:56 a.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(+)
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diff --git a/include/linux/security.h b/include/linux/security.h
index 5ebc3ec6948c..890a5f9f043c 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -245,6 +245,15 @@  static inline const char *lsm_slot_to_name(int slot)
+static inline bool lsm_multiple_contexts(void)
+	return lsm_slot_to_name(1) != NULL;
+	return false;
  * lsmblob_value - find the first non-zero value in an lsmblob structure.
  * @blob: Pointer to the data