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From: Luis Chamberlain <mcgrof@kernel.org>
To: Scott Branden <scott.branden@broadcom.com>
Cc: Mimi Zohar <zohar@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	David Brown <david.brown@linaro.org>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Shuah Khan <shuah@kernel.org>,
	bjorn.andersson@linaro.org,
	Shuah Khan <skhan@linuxfoundation.org>,
	Arnd Bergmann <arnd@arndb.de>,
	"Rafael J . Wysocki" <rafael@kernel.org>,
	linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	linux-fsdevel@vger.kernel.org,
	BCM Kernel Feedback <bcm-kernel-feedback-list@broadcom.com>,
	Olof Johansson <olof@lixom.net>,
	Andrew Morton <akpm@linux-foundation.org>,
	Dan Carpenter <dan.carpenter@oracle.com>,
	Colin Ian King <colin.king@canonical.com>,
	Kees Cook <keescook@chromium.org>, Takashi Iwai <tiwai@suse.de>,
	linux-kselftest@vger.kernel.org, Andy Gross <agross@kernel.org>
Subject: Re: [PATCH v5 0/7] firmware: add partial read support in request_firmware_into_buf
Date: Sat, 16 May 2020 01:05:53 +0000	[thread overview]
Message-ID: <20200516010553.GF11244@42.do-not-panic.com> (raw)
In-Reply-To: <1e75c270-eae5-8f1d-ecc6-1fd2fb248f29@broadcom.com>

On Fri, May 15, 2020 at 04:28:08PM -0700, Scott Branden wrote:
> Hi Luis,
> 
> On 2020-05-15 1:47 p.m., Luis Chamberlain wrote:
> > On Wed, May 13, 2020 at 12:23:59PM -0400, Mimi Zohar wrote:
> > > Hi Scott,
> > > 
> > > On Thu, 2020-05-07 at 17:27 -0700, Scott Branden wrote:
> > > > Please consider this version series ready for upstream acceptance.
> > > > 
> > > > This patch series adds partial read support in request_firmware_into_buf.
> > > > In order to accept the enhanced API it has been requested that kernel
> > > > selftests and upstreamed driver utilize the API enhancement and so
> > > > are included in this patch series.
> > > > 
> > > > Also in this patch series is the addition of a new Broadcom VK driver
> > > > utilizing the new request_firmware_into_buf enhanced API.
> > > Up to now, the firmware blob was read into memory allowing IMA to
> > > verify the file signature.  With this change, ima_post_read_file()
> > > will not be able to verify the file signature.
> > > 
> > > (I don't think any of the other LSMs are on this hook, but you might
> > > want to Cc the LSM or integrity mailing list.)
> > Scott, so it sounds we need a resolution for pread for IMA for file
> > signature verification. It seems that can be addressed though. Feel
> > free to submit the u32 flag changes which you picked up on though in
> > the meantime.
> Sure, I can submit a new patch to change the existing enum to
> a u32. 

Great thanks!

> For the new pread flags I am adding I could also leave as
> a u32 or change from a u32 to an enum since there is currently only
> one flag in use.  Then, in the future if another flag was added we would
> need
> to change it back to a u32.

Yes that approach works well, enum for now.


  Luis

      reply	other threads:[~2020-05-16  1:06 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-08  0:27 Scott Branden
2020-05-08  0:27 ` [PATCH v5 1/7] fs: introduce kernel_pread_file* support Scott Branden
2020-05-13  0:27   ` Luis Chamberlain
2020-05-13  6:23     ` Scott Branden
2020-05-13  6:51       ` Greg Kroah-Hartman
2020-05-13  8:16         ` Scott Branden
2020-05-13 18:39   ` Mimi Zohar
2020-05-13 18:53     ` Scott Branden
2020-05-13 18:57       ` Scott Branden
2020-05-13 19:03       ` Mimi Zohar
2020-05-13 19:18         ` Scott Branden
2020-05-13 19:39           ` Mimi Zohar
2020-05-13 19:41             ` Scott Branden
2020-05-13 21:20               ` Mimi Zohar
2020-05-13 21:28                 ` Luis Chamberlain
2020-05-13 22:12                   ` Mimi Zohar
2020-05-13 22:48                     ` Scott Branden
2020-05-13 23:00                       ` Mimi Zohar
2020-05-13 23:34                         ` Kees Cook
2020-05-13 23:58                           ` Mimi Zohar
2020-05-08  0:27 ` [PATCH v5 2/7] firmware: add offset to request_firmware_into_buf Scott Branden
2020-05-13  0:33   ` Luis Chamberlain
2020-05-13 18:35     ` Scott Branden
2020-05-15 20:44       ` Luis Chamberlain
2020-05-08  0:27 ` [PATCH v5 3/7] test_firmware: add partial read support for request_firmware_into_buf Scott Branden
2020-05-13  0:35   ` Luis Chamberlain
2020-05-08  0:27 ` [PATCH v5 4/7] firmware: test partial file reads of request_firmware_into_buf Scott Branden
2020-05-08  0:27 ` [PATCH v5 5/7] bcm-vk: add bcm_vk UAPI Scott Branden
2020-05-08  0:27 ` [PATCH v5 7/7] MAINTAINERS: bcm-vk: add maintainer for Broadcom VK Driver Scott Branden
     [not found] ` <20200508002739.19360-7-scott.branden@broadcom.com>
2020-05-13  0:38   ` [PATCH v5 6/7] misc: bcm-vk: add Broadcom VK driver Luis Chamberlain
2020-05-13  6:31     ` Scott Branden
2020-05-13  6:50       ` Greg Kroah-Hartman
2020-05-13 12:30         ` Luis Chamberlain
2020-05-13 18:39           ` Scott Branden
2020-05-13 16:23 ` [PATCH v5 0/7] firmware: add partial read support in request_firmware_into_buf Mimi Zohar
2020-05-15 20:47   ` Luis Chamberlain
2020-05-15 23:28     ` Scott Branden
2020-05-16  1:05       ` Luis Chamberlain [this message]

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