Recognise system/system_ext as a system image partition path.

Also move the regex used for that next to the other partition regex'es
for visibility, and add some unit tests.

Test: atest libnativeloader_tests libnativeloader_e2e_tests
  on mokey_go32
Bug: 346515837
Change-Id: I30a85678e0d3c45645d6f089f5f1d92e1360e8bf

1 files changed, 8 insertions, 0 deletions

diff --git a/libnativeloader/library_namespaces.cpp b/libnativeloader/library_namespaces.cpp
index e0f3d6af8c..7aa14080ce 100644
--- a/libnativeloader/library_namespaces.cpp
+++ b/libnativeloader/library_namespaces.cpp
@@ -86,6 +86,8 @@ constexpr const char* kProductLibPath = "/product/" LIB ":/system/product/" LIB;
 const std::regex kVendorPathRegex("(/system)?/vendor/.*");
 const std::regex kProductPathRegex("(/system)?/product/.*");
 const std::regex kSystemPathRegex("/system(_ext)?/.*");  // MUST be tested last.
+const std::regex kPartitionNativeLibPathRegex(
+    "/(system|(system/)?(system_ext|vendor|product))/lib(64)?/.*");
 
 jobject GetParentClassLoader(JNIEnv* env, jobject class_loader) {
   jclass class_loader_class = env->FindClass("java/lang/ClassLoader");
@@ -138,6 +140,12 @@ Result<ApiDomain> GetApiDomainFromPathList(const std::string& path_list) {
   return result;
 }
 
+// Returns true if the given path is in a partition-wide native library location,
+// i.e. <partition root>/lib(64).
+bool IsPartitionNativeLibPath(const std::string& path) {
+  return std::regex_match(path, kPartitionNativeLibPathRegex);
+}
+
 void LibraryNamespaces::Initialize() {
   // Once public namespace is initialized there is no
   // point in running this code - it will have no effect