KEYCTL_GET_KEYRING_ID 0 KEYCTL_JOIN_SESSION_KEYRING 1 KEYCTL_UPDATE 2 KEYCTL_REVOKE 3 KEYCTL_CHOWN 4 KEYCTL_SETPERM 5 KEYCTL_DESCRIBE 6 KEYCTL_CLEAR 7 KEYCTL_LINK 8 KEYCTL_UNLINK 9 KEYCTL_SEARCH 10 KEYCTL_READ 11 KEYCTL_INSTANTIATE 12 KEYCTL_NEGATE 13 KEYCTL_SET_REQKEY_KEYRING 14 KEYCTL_SET_TIMEOUT 15 KEYCTL_ASSUME_AUTHORITY 16 KEYCTL_GET_SECURITY 17 KEYCTL_SESSION_TO_PARENT 18 KEYCTL_REJECT 19 KEYCTL_INSTANTIATE_IOV 20 KEYCTL_INVALIDATE 21 KEYCTL_GET_PERSISTENT 22