Revert "Introduce conscrypt linker namespace."

This reverts commit 67a09e57915de6ba2562ea4a5e16ee0ad4870e27.
Exempt-From-Owner-Approval: Fixes P0 failures.

Bug: 123185917


Reason for revert: media namespace needs to be introduced.

Change-Id: I0c28798a3143c1e627278c3a908207e670171416

1 files changed, 1 insertions, 44 deletions

diff --git a/libnativeloader/native_loader.cpp b/libnativeloader/native_loader.cpp
index ab17b29d4..0a808ce42 100644
--- a/libnativeloader/native_loader.cpp
+++ b/libnativeloader/native_loader.cpp
@@ -43,10 +43,6 @@
 #include <android-base/properties.h>
 #endif
 
-extern "C" {
-struct android_namespace_t* android_get_exported_namespace(const char*);
-}
-
 #define CHECK(predicate) LOG_ALWAYS_FATAL_IF(!(predicate),\
                                              "%s:%d: %s CHECK '" #predicate "' failed.",\
                                              __FILE__, __LINE__, __FUNCTION__)
@@ -123,8 +119,6 @@ static constexpr const char* kVendorClassloaderNamespaceName = "vendor-classload
 // This list includes all directories app is allowed to access this way.
 static constexpr const char* kWhitelistedDirectories = "/data:/mnt/expand";
 
-static constexpr const char* kApexPath = "/apex/";
-
 static bool is_debuggable() {
   char debuggable[PROP_VALUE_MAX];
   property_get("ro.debuggable", debuggable, "0");
@@ -629,51 +623,14 @@ jstring CreateClassLoaderNamespace(JNIEnv* env,
   return nullptr;
 }
 
-#if defined(__ANDROID__)
-static android_namespace_t* FindExportedNamespace(const char* caller_location) {
-  std::string location = caller_location;
-  // Lots of implicit assumptions here: we expect `caller_location` to be of the form:
-  // /apex/com.android...modulename/...
-  //
-  // And we extract from it 'modulename', which is the name of the linker namespace.
-  if (android::base::StartsWith(location, kApexPath)) {
-    size_t slash_index = location.find_first_of('/', strlen(kApexPath));
-    LOG_ALWAYS_FATAL_IF((slash_index == std::string::npos),
-                        "Error finding namespace of apex: no slash in path %s", caller_location);
-    size_t dot_index = location.find_last_of('.', slash_index);
-    LOG_ALWAYS_FATAL_IF((dot_index == std::string::npos),
-                        "Error finding namespace of apex: no dot in apex name %s", caller_location);
-    std::string name = location.substr(dot_index + 1, slash_index - dot_index - 1);
-    android_namespace_t* boot_namespace = android_get_exported_namespace(name.c_str());
-    LOG_ALWAYS_FATAL_IF((boot_namespace == nullptr),
-                        "Error finding namespace of apex: no namespace called %s", name.c_str());
-    return boot_namespace;
-  }
-  return nullptr;
-}
-#endif
-
 void* OpenNativeLibrary(JNIEnv* env, int32_t target_sdk_version, const char* path,
                         jobject class_loader, const char* caller_location, jstring library_path,
                         bool* needs_native_bridge, char** error_msg) {
 #if defined(__ANDROID__)
   UNUSED(target_sdk_version);
+  UNUSED(caller_location);
   if (class_loader == nullptr) {
     *needs_native_bridge = false;
-    if (caller_location != nullptr) {
-      android_namespace_t* boot_namespace = FindExportedNamespace(caller_location);
-      if (boot_namespace != nullptr) {
-        const android_dlextinfo dlextinfo = {
-            .flags = ANDROID_DLEXT_USE_NAMESPACE,
-            .library_namespace = boot_namespace,
-        };
-        void* handle = android_dlopen_ext(path, RTLD_NOW, &dlextinfo);
-        if (handle == nullptr) {
-          *error_msg = strdup(dlerror());
-        }
-        return handle;
-      }
-    }
     void* handle = dlopen(path, RTLD_NOW);
     if (handle == nullptr) {
       *error_msg = strdup(dlerror());