From e306bce92756d5b0c83033359352eb476643d9ff Mon Sep 17 00:00:00 2001
From: Yifan Hong <elsk@google.com>
Date: Wed, 15 Jul 2020 17:08:59 -0700
Subject: [PATCH] rootdir: add odm_dlkm symlinks

Test: builds and boots
Bug: 156020364
Change-Id: I678b787cbf81ea6038936a4059e0bf5adfe3274f
---
 rootdir/Android.mk | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/rootdir/Android.mk b/rootdir/Android.mk
index ac8e8478a..77fa94e73 100644
--- a/rootdir/Android.mk
+++ b/rootdir/Android.mk
@@ -131,6 +131,16 @@ LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/vendor_dlkm
 # via /vendor/lib/modules directly.
 LOCAL_POST_INSTALL_CMD += ; ln -sf /vendor/vendor_dlkm/etc $(TARGET_ROOT_OUT)/vendor_dlkm/etc
 
+# For /odm_dlkm partition.
+LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/odm_dlkm
+# For Treble Generic System Image (GSI), system-as-root GSI needs to work on
+# both devices with and without /odm_dlkm partition. Those symlinks are for
+# devices without /odm_dlkm partition. For devices with /odm_dlkm
+# partition, mount odm_dlkm.img under /odm_dlkm will hide those symlinks.
+# Note that /odm_dlkm/lib is omitted because odm DLKMs should be accessed
+# via /odm/lib/modules directly.
+LOCAL_POST_INSTALL_CMD += ; ln -sf /odm/odm_dlkm/etc $(TARGET_ROOT_OUT)/odm_dlkm/etc
+
 ifdef BOARD_CACHEIMAGE_FILE_SYSTEM_TYPE
   LOCAL_POST_INSTALL_CMD += ; mkdir -p $(TARGET_ROOT_OUT)/cache
 else