diff options
Diffstat (limited to 'security/keys/key.c')
| -rw-r--r-- | security/keys/key.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/security/keys/key.c b/security/keys/key.c index 7ada8019be1..06783cffb3a 100644 --- a/security/keys/key.c +++ b/security/keys/key.c @@ -671,6 +671,26 @@ found_kernel_type: return ktype; } +void key_set_timeout(struct key *key, unsigned timeout) +{ + struct timespec now; + time_t expiry = 0; + + /* make the changes with the locks held to prevent races */ + down_write(&key->sem); + + if (timeout > 0) { + now = current_kernel_time(); + expiry = now.tv_sec + timeout; + } + + key->expiry = expiry; + key_schedule_gc(key->expiry + key_gc_delay); + + up_write(&key->sem); +} +EXPORT_SYMBOL_GPL(key_set_timeout); + /* * Unlock a key type locked by key_type_lookup(). */ |