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Date: Wed, 15 May 2019 14:00:05 +0300 From: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com> To: Sean Christopherson <sean.j.christopherson@...el.com> Cc: Andy Lutomirski <luto@...nel.org>, Jethro Beekman <jethro@...tanix.com>, "Xing, Cedric" <cedric.xing@...el.com>, "Hansen, Dave" <dave.hansen@...el.com>, Thomas Gleixner <tglx@...utronix.de>, "Dr. Greg" <greg@...ellic.com>, Linus Torvalds <torvalds@...ux-foundation.org>, LKML <linux-kernel@...r.kernel.org>, X86 ML <x86@...nel.org>, "linux-sgx@...r.kernel.org" <linux-sgx@...r.kernel.org>, Andrew Morton <akpm@...ux-foundation.org>, "nhorman@...hat.com" <nhorman@...hat.com>, "npmccallum@...hat.com" <npmccallum@...hat.com>, "Ayoun, Serge" <serge.ayoun@...el.com>, "Katz-zamir, Shay" <shay.katz-zamir@...el.com>, "Huang, Haitao" <haitao.huang@...el.com>, Andy Shevchenko <andriy.shevchenko@...ux.intel.com>, "Svahn, Kai" <kai.svahn@...el.com>, Borislav Petkov <bp@...en8.de>, Josh Triplett <josh@...htriplett.org>, "Huang, Kai" <kai.huang@...el.com>, David Rientjes <rientjes@...gle.com> Subject: Re: [PATCH v20 00/28] Intel SGX1 support On Wed, May 15, 2019 at 01:35:31PM +0300, Jarkko Sakkinen wrote: > This brings me to an open question in Andy's model: lets say that we > change the source for SIGSTRUCT from memory address to fd. How can the > policy prevent the use not creating a file containing a SIGSTRUCT and > passing fd of that to the EINIT ioctl? Also wondering if a path would be better than plain fd for defining a reasonable policy i.e. have sigstruct_path as part of the ioctl parameters and not sigstruct_fd. /Jarkko
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