Merge branch 'docs-move' of git://git.kernel.org/pub/scm/linux/kernel/git/rdunlap...

[pandora-kernel.git] / include / linux / key.h

diff --git a/include/linux/key.h b/include/linux/key.h
index 303982a..6ea4eeb 100644 (file)
--- a/include/linux/key.h
+++ b/include/linux/key.h
@@ -276,6 +276,19 @@ static inline key_serial_t key_serial(struct key *key)
        return key ? key->serial : 0;
 }
 
+/**
+ * key_is_instantiated - Determine if a key has been positively instantiated
+ * @key: The key to check.
+ *
+ * Return true if the specified key has been positively instantiated, false
+ * otherwise.
+ */
+static inline bool key_is_instantiated(const struct key *key)
+{
+       return test_bit(KEY_FLAG_INSTANTIATED, &key->flags) &&
+               !test_bit(KEY_FLAG_NEGATIVE, &key->flags);
+}
+
 #define rcu_dereference_key(KEY)                                       \
        (rcu_dereference_protected((KEY)->payload.rcudata,              \
                                   rwsem_is_locked(&((struct key *)(KEY))->sem)))