Re: [PATCH v20 16/28] x86/sgx: Add provisioning

[Huang, Kai]

On Wed, 2019-04-17 at 13:39 +0300, Jarkko Sakkinen wrote:
> In order to provide a mechanism for devilering provisoning rights:
> 
> 1. Add a new device file /dev/sgx/provision that works as a token for
>    allowing an enclave to have the provisioning privileges.
> 2. Add a new ioctl called SGX_IOC_ENCLAVE_SET_ATTRIBUTE that accepts the
>    following data structure:
> 
>    struct sgx_enclave_set_attribute {
>            __u64 addr;
>            __u64 attribute_fd;
>    };
> 
> A daemon could sit on top of /dev/sgx/provision and send a file
> descriptor of this file to a process that needs to be able to provision
> enclaves.
> 
> The way this API is used is straight-forward. Lets assume that dev_fd is
> a handle to /dev/sgx/enclave and prov_fd is a handle to
> /dev/sgx/provision.  You would allow SGX_IOC_ENCLAVE_CREATE to
> initialize an enclave with the PROVISIONKEY attribute by
> 
> params.addr = <enclave address>;
> params.token_fd = prov_fd;
> 
Should be params.attribute_fd = prov_fd;

Thanks,
-Kai