tree 98942b1cec1a9009209ded944b62f2e90acd8565
parent b17f82519d4a912c9bc2aa47499126f4a84aace0
author John Edward Broadbent <jebr@google.com> 1640909509 -0800
committer John Broadbent <jebr@google.com> 1642208071 +0000

Add zero write and verify

This code implements the zero verify and zero write dbus interface. The
goal is to fill the whole block device with zeros, then check to make
sure the operation worked correctly.

Tested:
$ systemctl stop emmc.service
$ ./eStoraged -b /dev/mmcblk0 &
$ time busctl call xyz.openbmc_project.eStoraged.mmcblk0 /xyz/openbmc_project/storage/mmcblk0 xyz.openbmc_project.Inventory.Item.Volume Erase s
xyz.openbmc_project.Inventory.Item.Volume.EraseMethod.ZeroOverWrite --timeout=1200
Erasing encrypted eMMC                                                                                                                                                   <6> Starting erase

real    5m59.695s
user    0m0.000s
sys     0m0.030s

root@ytbaz20-nfd01:~/jebr# hexdump /dev/mmcblk0
0000000 0000 0000 0000 0000 0000 0000 0000 0000
*
$ time busctl call xyz.openbmc_project.eStoraged.mmcblk0 /xyz/openbmc_project/storage/mmcblk0 xyz.openbmc_project.Inventory.Item.Volume Erase s
xyz.openbmc_project.Inventory.Item.Volume.EraseMethod.ZeroVerify  --timeout=1200
Erasing encrypted eMMC
<6> Starting erase

real    5m46.920s
user    0m0.010s
sys     0m0.010s
$ echo "not zero" > /dev/mmcblk0
$ time busctl call xyz.openbmc_project.eStoraged.mmcblk0 /xyz/openbmc_project/storage/mmcblk0 xyz.openbmc_project.Inventory.Item.Volume Erase s
xyz.openbmc_project.Inventory.Item.Volume.EraseMethod.ZeroVerify  --timeout=1200
Erasing encrypted eMMC
<6> Starting erase
<3> Estoraged erase zeros block is not zero
Call failed: The operation failed internally.

real    0m0.022s
user    0m0.000s
sys     0m0.020s

Change-Id: Ie78ad427de1aa75472fc7ddd72d094866fe14b66
Signed-off-by: John Edward Broadbent <jebr@google.com>