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Date:   Tue, 23 Apr 2019 17:33:09 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To:     "Huang, Kai" <kai.huang@intel.com>
Cc:     "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-sgx@vger.kernel.org" <linux-sgx@vger.kernel.org>,
        "x86@kernel.org" <x86@kernel.org>,
        "Svahn, Kai" <kai.svahn@intel.com>,
        "nhorman@redhat.com" <nhorman@redhat.com>,
        "jmorris@namei.org" <jmorris@namei.org>,
        "Christopherson, Sean J" <sean.j.christopherson@intel.com>,
        "josh@joshtriplett.org" <josh@joshtriplett.org>,
        "tglx@linutronix.de" <tglx@linutronix.de>,
        "Ayoun, Serge" <serge.ayoun@intel.com>,
        "Huang, Haitao" <haitao.huang@intel.com>,
        "linux-security-module@vger.kernel.org" 
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        "luto@kernel.org" <luto@kernel.org>,
        "Katz-zamir, Shay" <shay.katz-zamir@intel.com>,
        "Hansen, Dave" <dave.hansen@intel.com>,
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        <andriy.shevchenko@linux.intel.com>
Subject: Re: [PATCH v20 16/28] x86/sgx: Add provisioning
Message-ID: <20190423143309.GB26642@linux.intel.com>
References: <20190417103938.7762-1-jarkko.sakkinen@linux.intel.com>
 <20190417103938.7762-17-jarkko.sakkinen@linux.intel.com>
 <1555643200.2776.1.camel@intel.com>
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On Fri, Apr 19, 2019 at 03:06:48AM +0000, Huang, Kai wrote:
> 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

Thanks.

/Jarkko