fstab: allow unlocked devices to boot with AVB test key

Set `avb_keys=no_such_key` for the vendor_dlkm dynamic kernel partition
to allow booting unlocked devices with a custom kernel. This allows a
few things:

1) Dogfooders can flash a custom kernel without wiping their device.
   This can help developers track down hard-to-reproduce bugs without
   rolling out a patch to the whole dogfooder population.
2) Developers can uprev their device's kernel without wiping their
   device or packaging the kernel with an Android platform build.

Note: we are using "no_such_key" to ensure an AVB keys file doesn't
accidentally get created.

Test: Flash CI build. Then flash custom kernel on top.
Bug: 274825778
Change-Id: Iee542cf5ab4973ee9cb2c1fe66d00b642fdf525b
This commit is contained in:
Will McVicker 2023-11-07 10:05:11 -08:00
parent 6249b6ee2f
commit 662e1bc915

View file

@ -8,7 +8,7 @@ system /system
system_ext /system_ext ext4 noatime,ro wait,slotselect,avb=vbmeta_system,logical,first_stage_mount,readahead_size_kb=128 system_ext /system_ext ext4 noatime,ro wait,slotselect,avb=vbmeta_system,logical,first_stage_mount,readahead_size_kb=128
product /product ext4 noatime,ro wait,slotselect,avb=vbmeta_system,logical,first_stage_mount,readahead_size_kb=128 product /product ext4 noatime,ro wait,slotselect,avb=vbmeta_system,logical,first_stage_mount,readahead_size_kb=128
vendor /vendor ext4 noatime,ro wait,slotselect,avb=vbmeta_vendor,logical,first_stage_mount,readahead_size_kb=128 vendor /vendor ext4 noatime,ro wait,slotselect,avb=vbmeta_vendor,logical,first_stage_mount,readahead_size_kb=128
vendor_dlkm /vendor_dlkm ext4 noatime,ro wait,slotselect,avb=vbmeta,logical,first_stage_mount vendor_dlkm /vendor_dlkm ext4 noatime,ro wait,slotselect,avb=vbmeta,avb_keys=no_such_key,logical,first_stage_mount
/dev/block/platform/14700000.ufs/by-name/boot /boot emmc defaults slotselect,avb=boot,first_stage_mount /dev/block/platform/14700000.ufs/by-name/boot /boot emmc defaults slotselect,avb=boot,first_stage_mount
/dev/block/platform/14700000.ufs/by-name/efs /mnt/vendor/efs ext4 defaults,noatime,rw wait,check,formattable /dev/block/platform/14700000.ufs/by-name/efs /mnt/vendor/efs ext4 defaults,noatime,rw wait,check,formattable
/dev/block/platform/14700000.ufs/by-name/efs_backup /mnt/vendor/efs_backup ext4 defaults,noatime,rw wait,check,formattable /dev/block/platform/14700000.ufs/by-name/efs_backup /mnt/vendor/efs_backup ext4 defaults,noatime,rw wait,check,formattable