From: tadeusz.struk@intel.com (Tadeusz Struk)
To: linux-security-module@vger.kernel.org
Subject: [PATCH] tpm: add support for partial reads
Date: Mon, 23 Jul 2018 16:42:38 -0700 [thread overview]
Message-ID: <ee0f0ccf-f757-a7d4-bf55-316f81fb490b@intel.com> (raw)
In-Reply-To: <20180723220822.GJ532@ziepe.ca>
On 07/23/2018 03:08 PM, Jason Gunthorpe wrote:
> 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
What if we introduce this new behavior only for the non-blocking mode
as James suggested? Or do you have some other suggestions?
Thanks,
--
Tadeusz
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next prev parent reply other threads:[~2018-07-23 23:42 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
2018-07-23 23:42 ` Tadeusz Struk [this message]
2018-07-24 2:05 ` Jason Gunthorpe
2018-07-23 21:48 ` Jason Gunthorpe
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