[PATCH] libfdisk: (MBR) recognize EBBR protective partitions

[PATCH] libfdisk: (MBR) recognize EBBR protective partitions

[Vincent Stehlé]

The MBR partition type 0xF8 is used by the Arm EBBR specification for
protective partitions over fixed-location firmware images.

References: https://github.com/ARM-software/ebbr
Signed-off-by: Vincent Stehlé <vincent.stehle@arm.com>
---
 include/pt-mbr-partnames.h | 1 +
 include/pt-mbr.h           | 1 +
 2 files changed, 2 insertions(+)

diff --git a/include/pt-mbr-partnames.h b/include/pt-mbr-partnames.h
index 19a345029..9304793db 100644
--- a/include/pt-mbr-partnames.h
+++ b/include/pt-mbr-partnames.h
@@ -101,6 +101,7 @@
 	{0xf1, N_("SpeedStor")},
 	{0xf4, N_("SpeedStor")},	/* SpeedStor large partition */
 	{0xf2, N_("DOS secondary")},	/* DOS 3.3+ secondary */
+	{0xf8, N_("EBBR protective")},	/* Arm EBBR firmware protective partition */
 	{0xfb, N_("VMware VMFS")},
 	{0xfc, N_("VMware VMKCORE")},	/* VMware kernel dump partition */
 	{0xfd, N_("Linux raid autodetect")},/* Linux raid partition with
diff --git a/include/pt-mbr.h b/include/pt-mbr.h
index 0f014cd88..ff658f346 100644
--- a/include/pt-mbr.h
+++ b/include/pt-mbr.h
@@ -199,6 +199,7 @@ enum {
 	MBR_SPEEDSTOR1_PARTITION	= 0xf1,
 	MBR_SPEEDSTOR2_PARTITION	= 0xf4, /* SpeedStor large partition */
 	MBR_DOS_SECONDARY_PARTITION	= 0xf2, /* DOS 3.3+ secondary */
+	MBR_EBBR_PROTECTIVE_PARTITION	= 0xf8, /* Arm EBBR firmware protective partition */
 	MBR_VMWARE_VMFS_PARTITION	= 0xfb,
 	MBR_VMWARE_VMKCORE_PARTITION	= 0xfc, /* VMware kernel dump partition */
 	MBR_LINUX_RAID_PARTITION	= 0xfd, /* Linux raid partition with autodetect using persistent superblock */
-- 
2.33.0

Re: [PATCH] libfdisk: (MBR) recognize EBBR protective partitions

[Vincent Stehlé]

Hi,

Is there any concern with this patch[1] adding support for EBBR protective
partitions to fdisk, please?

I have verified that it does still apply to the master branch of util-linux.
Do not hesitate to let me know if changes need to be made.

If that can be of any help, a similar change[2] has now been accepted in
busybox.

Best regards,

--
Vincent Stehlé
System Architect - Arm

[1]: https://marc.info/?l=util-linux-ng&m=163854721714647&w=2
[2]: https://git.busybox.net/busybox/commit/?id=a93668cc4277b14eaff07fcfdef9693c990ec824

Re: [PATCH] libfdisk: (MBR) recognize EBBR protective partitions

[Karel Zak]

On Mon, Feb 07, 2022 at 07:14:50PM +0100, Vincent Stehlé wrote:
> Is there any concern with this patch[1] adding support for EBBR protective
> partitions to fdisk, please?
> 
> I have verified that it does still apply to the master branch of util-linux.
> Do not hesitate to let me know if changes need to be made.

The patch is fine. I've overlooked your patch in my INBOX :-( Sorry.
Applied now. 

Thanks!

 Karel

-- 
 Karel Zak  <kzak@redhat.com>
 http://karelzak.blogspot.com