Add a function to list all files managed by ART Service.

This is going to be used in the "sweep" phase of the GC.

Bug: 254013425
Test: m test-art-host-gtest-art_libarttools_tests
Test: m test-art-host-gtest-art_artd_tests
Test: atest art_standalone_libarttools_tests
Test: atest atest art_standalone_artd_tests
Ignore-AOSP-First: ART Services.
Change-Id: Ie7a5bd6f805c370aa3c2e3a1ab1d5408e4552f83

1 files changed, 14 insertions, 0 deletions

diff --git a/libartbase/base/file_utils.cc b/libartbase/base/file_utils.cc
index 239628978e..d32a54e76b 100644
--- a/libartbase/base/file_utils.cc
+++ b/libartbase/base/file_utils.cc
@@ -73,6 +73,8 @@ static constexpr const char* kAndroidSystemExtRootEnvVar = "SYSTEM_EXT_ROOT";
 static constexpr const char* kAndroidSystemExtRootDefaultPath = "/system_ext";
 static constexpr const char* kAndroidDataEnvVar = "ANDROID_DATA";
 static constexpr const char* kAndroidDataDefaultPath = "/data";
+static constexpr const char* kAndroidExpandEnvVar = "ANDROID_EXPAND";
+static constexpr const char* kAndroidExpandDefaultPath = "/mnt/expand";
 static constexpr const char* kAndroidArtRootEnvVar = "ANDROID_ART_ROOT";
 static constexpr const char* kAndroidConscryptRootEnvVar = "ANDROID_CONSCRYPT_ROOT";
 static constexpr const char* kAndroidI18nRootEnvVar = "ANDROID_I18N_ROOT";
@@ -282,6 +284,18 @@ std::string GetAndroidDataSafe(std::string* error_msg) {
 
 std::string GetAndroidData() { return GetAndroidDir(kAndroidDataEnvVar, kAndroidDataDefaultPath); }
 
+std::string GetAndroidExpandSafe(std::string* error_msg) {
+  const char* android_dir = GetAndroidDirSafe(kAndroidExpandEnvVar,
+                                              kAndroidExpandDefaultPath,
+                                              /*must_exist=*/true,
+                                              error_msg);
+  return (android_dir != nullptr) ? android_dir : "";
+}
+
+std::string GetAndroidExpand() {
+  return GetAndroidDir(kAndroidExpandEnvVar, kAndroidExpandDefaultPath);
+}
+
 std::string GetArtApexData() {
   return GetAndroidDir(kArtApexDataEnvVar, kArtApexDataDefaultPath, /*must_exist=*/false);
 }