linux-kernel - Re: [PATCH] mmc: card: Don't show eMMC RPMB and BOOT areas in /proc/partitions

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 1 Mar 2018 11:04:58 +0530
From:   Harish Jenny K N <harish_kandiga@...tor.com>
To:     Alex Lemberg <Alex.Lemberg@....com>,
        "ulf.hansson@...aro.org" <ulf.hansson@...aro.org>,
        "linus.walleij@...aro.org" <linus.walleij@...aro.org>,
        "adrian.hunter@...el.com" <adrian.hunter@...el.com>,
        "shawn.lin@...k-chips.com" <shawn.lin@...k-chips.com>
CC:     "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mmc: card: Don't show eMMC RPMB and BOOT areas in
 /proc/partitions



On Tuesday 27 February 2018 08:28 PM, Alex Lemberg wrote:
> Hi Andrew,
>
> While RPMB partition requires special IOCTL, the boot partition is only requires "switch partition", which is not unusual operation in eMMC.
> Why to prevent users access boot partition?
>
> Thanks,
> Alex 

The main intention of the patch was to not have RPMB device in /proc/partitions. Boot partitions are also unlikely to have any partitioning, so it made sense to treat them the same way as RPMB and not list in /proc/partitions.
Now I see that RPMB is converted to a character device and this change may not be required for RPMB.

Correct me if I am wrong. Also any comments are welcome.

Thanks,
Harish Jenny K N