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
KEYCTL_DH_COMPUTE 23