long keyctl_revoke(key_serial_t key);
DESCRIPTIONkeyctl_revoke() marks a key as being revoked.
After this operation has been performed on a key, attempts to access it will meet with error EKEYREVOKED.
The caller must have write permission on a key to be able revoke it.
RETURN VALUEOn success keyctl_revoke() returns 0. On error, the value -1 will be returned and errno will have been set to an appropriate error.
- The specified key does not exist.
- The key has already been revoked.
- The named key exists, but is not writable by the calling process.