2 files changed, 31 insertions, 6 deletions

diff --git a/libs/graphicsenv/GraphicsEnv.cpp b/libs/graphicsenv/GraphicsEnv.cpp
index 8e883b33d8..0d031edfc6 100644
--- a/libs/graphicsenv/GraphicsEnv.cpp
+++ b/libs/graphicsenv/GraphicsEnv.cpp
@@ -115,14 +115,18 @@ static const std::string getSystemNativeLibraries(NativeLibrary type) {
     return env;
 }
 
-void GraphicsEnv::setDriverPath(const std::string path) {
-    if (!mDriverPath.empty()) {
-        ALOGV("ignoring attempt to change driver path from '%s' to '%s'", mDriverPath.c_str(),
-              path.c_str());
+void GraphicsEnv::setDriverPathAndSphalLibraries(const std::string path,
+                                                 const std::string sphalLibraries) {
+    if (!mDriverPath.empty() || !mSphalLibraries.empty()) {
+        ALOGV("ignoring attempt to change driver path from '%s' to '%s' or change sphal libraries "
+              "from '%s' to '%s'",
+              mDriverPath.c_str(), path.c_str(), mSphalLibraries.c_str(), sphalLibraries.c_str());
         return;
     }
-    ALOGV("setting driver path to '%s'", path.c_str());
+    ALOGV("setting driver path to '%s' and sphal libraries to '%s'", path.c_str(),
+          sphalLibraries.c_str());
     mDriverPath = path;
+    mSphalLibraries = sphalLibraries;
 }
 
 void GraphicsEnv::setLayerPaths(NativeLoaderNamespace* appNamespace, const std::string layerPaths) {
@@ -187,6 +191,23 @@ android_namespace_t* GraphicsEnv::getDriverNamespace() {
             mDriverNamespace = nullptr;
             return;
         }
+
+        if (mSphalLibraries.empty()) return;
+
+        // Make additional libraries in sphal to be accessible
+        auto sphalNamespace = android_get_exported_namespace("sphal");
+        if (!sphalNamespace) {
+            ALOGE("Depend on these libraries[%s] in sphal, but failed to get sphal namespace",
+                  mSphalLibraries.c_str());
+            mDriverNamespace = nullptr;
+            return;
+        }
+
+        if (!android_link_namespaces(mDriverNamespace, sphalNamespace, mSphalLibraries.c_str())) {
+            ALOGE("Failed to link sphal namespace[%s]", dlerror());
+            mDriverNamespace = nullptr;
+            return;
+        }
     });
 
     return mDriverNamespace;
diff --git a/libs/graphicsenv/include/graphicsenv/GraphicsEnv.h b/libs/graphicsenv/include/graphicsenv/GraphicsEnv.h
index 784e2c8903..2e8e0998ed 100644
--- a/libs/graphicsenv/include/graphicsenv/GraphicsEnv.h
+++ b/libs/graphicsenv/include/graphicsenv/GraphicsEnv.h
@@ -34,7 +34,10 @@ public:
     // (drivers must be stored uncompressed and page aligned); such elements
     // in the search path must have a '!' after the zip filename, e.g.
     //     /data/app/com.example.driver/base.apk!/lib/arm64-v8a
-    void setDriverPath(const std::string path);
+    // Also set additional required sphal libraries to the linker for loading
+    // graphics drivers. The string is a list of libraries separated by ':',
+    // which is required by android_link_namespaces.
+    void setDriverPathAndSphalLibraries(const std::string path, const std::string sphalLibraries);
     android_namespace_t* getDriverNamespace();
 
     void setLayerPaths(NativeLoaderNamespace* appNamespace, const std::string layerPaths);
@@ -47,6 +50,7 @@ public:
 private:
     GraphicsEnv() = default;
     std::string mDriverPath;
+    std::string mSphalLibraries;
     std::string mDebugLayers;
     std::string mLayerPaths;
     android_namespace_t* mDriverNamespace = nullptr;