apparmor: add strn version of aa_find_ns

Signed-off-by: John Johansen <john.johansen@canonical.com>

1 files changed, 19 insertions, 3 deletions

diff --git a/security/apparmor/policy_ns.c b/security/apparmor/policy_ns.c
index 71fbd14e3b37..9746643cbab2 100644
--- a/security/apparmor/policy_ns.c
+++ b/security/apparmor/policy_ns.c
@@ -139,27 +139,43 @@ void aa_free_ns(struct aa_ns *ns)
 }
 
 /**
- * aa_find_ns  -  look up a profile namespace on the namespace list
+ * aa_findn_ns  -  look up a profile namespace on the namespace list
  * @root: namespace to search in  (NOT NULL)
  * @name: name of namespace to find  (NOT NULL)
+ * @n: length of @name
  *
  * Returns: a refcounted namespace on the list, or NULL if no namespace
  *          called @name exists.
  *
  * refcount released by caller
  */
-struct aa_ns *aa_find_ns(struct aa_ns *root, const char *name)
+struct aa_ns *aa_findn_ns(struct aa_ns *root, const char *name, size_t n)
 {
 	struct aa_ns *ns = NULL;
 
 	rcu_read_lock();
-	ns = aa_get_ns(__aa_find_ns(&root->sub_ns, name));
+	ns = aa_get_ns(__aa_findn_ns(&root->sub_ns, name, n));
 	rcu_read_unlock();
 
 	return ns;
 }
 
 /**
+ * aa_find_ns  -  look up a profile namespace on the namespace list
+ * @root: namespace to search in  (NOT NULL)
+ * @name: name of namespace to find  (NOT NULL)
+ *
+ * Returns: a refcounted namespace on the list, or NULL if no namespace
+ *          called @name exists.
+ *
+ * refcount released by caller
+ */
+struct aa_ns *aa_find_ns(struct aa_ns *root, const char *name)
+{
+	return aa_findn_ns(root, name, strlen(name));
+}
+
+/**
  * aa_prepare_ns - find an existing or create a new namespace of @name
  * @name: the namespace to find or add  (MAYBE NULL)
  *