diff options
Diffstat (limited to 'include/linux/key.h')
| -rw-r--r-- | include/linux/key.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/key.h b/include/linux/key.h index 303982a69933..6ea4eebd3467 100644 --- 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))) |