From: Jason Gunthorpe <jgg@ziepe.ca>
To: Tadeusz Struk <tadeusz.struk@intel.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>,
Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
linux-integrity@vger.kernel.org,
linux-security-module@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] tpm: add support for partial reads
Date: Mon, 23 Jul 2018 16:08:22 -0600 [thread overview]
Message-ID: <20180723220822.GJ532@ziepe.ca> (raw)
In-Reply-To: <dabf6cf5-e62c-721f-9f19-18da34d52ec1@intel.com>
On Mon, Jul 23, 2018 at 03:00:20PM -0700, Tadeusz Struk wrote:
> On 07/23/2018 02:56 PM, Jason Gunthorpe wrote:
> > The proposed patch doesn't clear the data_pending if the entire buffer
> > is not consumed, so of course it is ABI breaking, that really isn't OK.
>
> The data_pending will be cleared by the timeout handler if the user doesn't
> read the response fully before the timeout expires. The is the same situation
> if the user would not read the response at all.
That causes write() to fail with EBUSY
NAK from me on breaking the ABI like this
Jason
next prev parent reply other threads:[~2018-07-23 22:08 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-19 15:52 [PATCH] tpm: add support for partial reads Tadeusz Struk
2018-07-19 15:55 ` Tadeusz Struk
2018-07-19 17:19 ` James Bottomley
2018-07-19 17:54 ` Tadeusz Struk
2018-07-19 18:47 ` James Bottomley
2018-07-19 19:05 ` Tadeusz Struk
2018-07-19 19:52 ` James Bottomley
2018-07-19 20:12 ` Tadeusz Struk
2018-07-19 20:27 ` James Bottomley
2018-07-19 21:01 ` Tadeusz Struk
2018-07-23 20:19 ` Jarkko Sakkinen
2018-07-23 20:53 ` Tadeusz Struk
2018-07-23 21:13 ` James Bottomley
2018-07-23 21:38 ` Tadeusz Struk
2018-07-23 21:56 ` Jason Gunthorpe
2018-07-23 22:00 ` Tadeusz Struk
2018-07-23 22:08 ` Jason Gunthorpe [this message]
2018-07-23 23:42 ` Tadeusz Struk
2018-07-24 2:05 ` Jason Gunthorpe
2018-07-23 21:48 ` Jason Gunthorpe
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