From 4ddfd023cc012280f6121a2017f77fe18284b286 Mon Sep 17 00:00:00 2001
From: Roman Kiryanov <rkir@google.com>
Date: Tue, 9 Mar 2021 17:22:21 -0800
Subject: [PATCH] Populate more emulator properties to `ro.boot.`

ro.boot.config.low_ram
ro.boot.dalvik.vm.heapsize
ro.boot.debug.hwui.renderer
ro.boot.debug.stagefright.ccodec
ro.boot.opengles.version

Bug: 182291166
Test: presubmit
Signed-off-by: Roman Kiryanov <rkir@google.com>
Change-Id: I4d7ee19feb13a418a95f31be7534df98dfaeb3e3
---
 init/property_service.cpp | 29 +++++++++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/init/property_service.cpp b/init/property_service.cpp
index 27ace7d43..73ef97ada 100644
--- a/init/property_service.cpp
+++ b/init/property_service.cpp
@@ -1165,12 +1165,37 @@ static void ProcessKernelDt() {
 
 constexpr auto ANDROIDBOOT_PREFIX = "androidboot."sv;
 
+// emulator specific, should be removed once emulator is migrated to
+// bootconfig, see b/182291166.
+static std::string RemapEmulatorPropertyName(const std::string_view qemu_key) {
+    if (StartsWith(qemu_key, "dalvik."sv) || StartsWith(qemu_key, "opengles."sv) ||
+        StartsWith(qemu_key, "config."sv)) {
+        return std::string(qemu_key);
+    } else if (qemu_key == "uirenderer"sv) {
+        return "debug.hwui.renderer"s;
+    } else if (qemu_key == "media.ccodec"sv) {
+        return "debug.stagefright.ccodec"s;
+    } else {
+        return ""s;  // TBD
+    }
+}
+
 static void ProcessKernelCmdline() {
     ImportKernelCmdline([&](const std::string& key, const std::string& value) {
+        constexpr auto qemu_prefix = "qemu."sv;
+
         if (StartsWith(key, ANDROIDBOOT_PREFIX)) {
             InitPropertySet("ro.boot." + key.substr(ANDROIDBOOT_PREFIX.size()), value);
-        } else if (StartsWith(key, "qemu."sv)) {
-            InitPropertySet("ro.kernel." + key, value);
+        } else if (StartsWith(key, qemu_prefix)) {
+            InitPropertySet("ro.kernel." + key, value);  // emulator specific, deprecated
+
+            // emulator specific, should be retired once emulator migrates to
+            // androidboot.
+            const auto new_name =
+                    RemapEmulatorPropertyName(std::string_view(key).substr(qemu_prefix.size()));
+            if (!new_name.empty()) {
+                InitPropertySet("ro.boot." + new_name, value);
+            }
         } else if (key == "qemu") {
             // emulator specific, should be retired once emulator migrates to
             // androidboot.