diff options
Diffstat (limited to '')
| -rw-r--r-- | security/keys/key.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/security/keys/key.c b/security/keys/key.c index dc628941ecd3..c9bf66ac36e0 100644 --- a/security/keys/key.c +++ b/security/keys/key.c @@ -955,6 +955,28 @@ void key_revoke(struct key *key) EXPORT_SYMBOL(key_revoke); /** + * key_invalidate - Invalidate a key. + * @key: The key to be invalidated. + * + * Mark a key as being invalidated and have it cleaned up immediately. The key + * is ignored by all searches and other operations from this point. + */ +void key_invalidate(struct key *key) +{ + kenter("%d", key_serial(key)); + + key_check(key); + + if (!test_bit(KEY_FLAG_INVALIDATED, &key->flags)) { + down_write_nested(&key->sem, 1); + if (!test_and_set_bit(KEY_FLAG_INVALIDATED, &key->flags)) + key_schedule_gc_links(); + up_write(&key->sem); + } +} +EXPORT_SYMBOL(key_invalidate); + +/** * register_key_type - Register a type of key. * @ktype: The new key type. * |