diff --git a/audio/aidl/vts/VtsHalBassBoostTargetTest.cpp b/audio/aidl/vts/VtsHalBassBoostTargetTest.cpp
index abc5a91..5ce2a20 100644
--- a/audio/aidl/vts/VtsHalBassBoostTargetTest.cpp
+++ b/audio/aidl/vts/VtsHalBassBoostTargetTest.cpp
@@ -114,7 +114,7 @@
     }
 
     static constexpr int kSamplingFrequency = 44100;
-    static constexpr int kDurationMilliSec = 2000;
+    static constexpr int kDurationMilliSec = 720;
     static constexpr int kInputSize = kSamplingFrequency * kDurationMilliSec / 1000;
     long mInputFrameCount, mOutputFrameCount;
     std::shared_ptr<IFactory> mFactory;
@@ -231,7 +231,7 @@
         return gains[0] - gains[1];
     }
 
-    static constexpr int kNPointFFT = 32768;
+    static constexpr int kNPointFFT = 16384;
     static constexpr float kBinWidth = (float)kSamplingFrequency / kNPointFFT;
     std::set<int> mStrengthValues;
     int32_t mChannelLayout;
diff --git a/audio/aidl/vts/VtsHalPresetReverbTargetTest.cpp b/audio/aidl/vts/VtsHalPresetReverbTargetTest.cpp
index 2229ff8..542f0d8 100644
--- a/audio/aidl/vts/VtsHalPresetReverbTargetTest.cpp
+++ b/audio/aidl/vts/VtsHalPresetReverbTargetTest.cpp
@@ -82,7 +82,7 @@
     }
 
     static constexpr int kSamplingFrequency = 44100;
-    static constexpr int kDurationMilliSec = 2000;
+    static constexpr int kDurationMilliSec = 500;
     static constexpr int kBufferSize = kSamplingFrequency * kDurationMilliSec / 1000;
     int mStereoChannelCount =
             getChannelCount(AudioChannelLayout::make<AudioChannelLayout::layoutMask>(
diff --git a/audio/aidl/vts/VtsHalVirtualizerTargetTest.cpp b/audio/aidl/vts/VtsHalVirtualizerTargetTest.cpp
index f121f7c..b449f3c 100644
--- a/audio/aidl/vts/VtsHalVirtualizerTargetTest.cpp
+++ b/audio/aidl/vts/VtsHalVirtualizerTargetTest.cpp
@@ -96,7 +96,7 @@
 
     static constexpr int kSamplingFrequency = 44100;
     static constexpr int kDefaultChannelLayout = AudioChannelLayout::LAYOUT_STEREO;
-    static constexpr int kDurationMilliSec = 2000;
+    static constexpr int kDurationMilliSec = 720;
     static constexpr int kBufferSize = kSamplingFrequency * kDurationMilliSec / 1000;
     int kChannelCount = getChannelCount(
             AudioChannelLayout::make<AudioChannelLayout::layoutMask>(kDefaultChannelLayout));
diff --git a/audio/aidl/vts/VtsHalVolumeTargetTest.cpp b/audio/aidl/vts/VtsHalVolumeTargetTest.cpp
index 4115eca..2c21d2e 100644
--- a/audio/aidl/vts/VtsHalVolumeTargetTest.cpp
+++ b/audio/aidl/vts/VtsHalVolumeTargetTest.cpp
@@ -94,7 +94,7 @@
     }
 
     static constexpr int kSamplingFrequency = 44100;
-    static constexpr int kDurationMilliSec = 2000;
+    static constexpr int kDurationMilliSec = 720;
     static constexpr int kBufferSize = kSamplingFrequency * kDurationMilliSec / 1000;
     static constexpr int kMinLevel = -96;
     static constexpr int kDefaultChannelLayout = AudioChannelLayout::LAYOUT_STEREO;
@@ -180,7 +180,7 @@
     const int kVsrApiLevel;
     static constexpr int kMaxAudioSample = 1;
     static constexpr int kTransitionDuration = 300;
-    static constexpr int kNPointFFT = 32768;
+    static constexpr int kNPointFFT = 16384;
     static constexpr float kBinWidth = (float)kSamplingFrequency / kNPointFFT;
     static constexpr size_t offset = kSamplingFrequency * kTransitionDuration / 1000;
     static constexpr float kBaseLevel = 0;
diff --git a/automotive/can/1.0/default/Android.bp b/automotive/can/1.0/default/Android.bp
index 05691d9..0a68fbc 100644
--- a/automotive/can/1.0/default/Android.bp
+++ b/automotive/can/1.0/default/Android.bp
@@ -55,7 +55,6 @@
     ],
     static_libs: [
         "android.hardware.automotive.can@libnetdevice",
-        "android.hardware.automotive@libc++fs",
         "libnl++",
     ],
     vintf_fragments: ["manifest_android.hardware.automotive.can@1.0.xml"],
diff --git a/automotive/can/1.0/default/CanBus.h b/automotive/can/1.0/default/CanBus.h
index 8b73258..977bfcc 100644
--- a/automotive/can/1.0/default/CanBus.h
+++ b/automotive/can/1.0/default/CanBus.h
@@ -24,6 +24,7 @@
 #include <utils/Mutex.h>
 
 #include <atomic>
+#include <mutex>
 #include <thread>
 
 namespace android::hardware::automotive::can::V1_0::implementation {
diff --git a/automotive/can/1.0/default/CanController.cpp b/automotive/can/1.0/default/CanController.cpp
index 1b5bf5b..4a7ab7e 100644
--- a/automotive/can/1.0/default/CanController.cpp
+++ b/automotive/can/1.0/default/CanController.cpp
@@ -23,7 +23,7 @@
 #include <android-base/logging.h>
 #include <android/hidl/manager/1.2/IServiceManager.h>
 
-#include <automotive/filesystem>
+#include <filesystem>
 #include <fstream>
 #include <regex>
 
@@ -31,7 +31,7 @@
 
 using IfId = ICanController::BusConfig::InterfaceId;
 using IfIdDisc = ICanController::BusConfig::InterfaceId::hidl_discriminator;
-namespace fs = android::hardware::automotive::filesystem;
+namespace fs = ::std::filesystem;
 
 namespace fsErrors {
 static const std::error_code ok;
diff --git a/automotive/can/1.0/default/libc++fs/.clang-format b/automotive/can/1.0/default/libc++fs/.clang-format
deleted file mode 100644
index dd59681..0000000
--- a/automotive/can/1.0/default/libc++fs/.clang-format
+++ /dev/null
@@ -1,13 +0,0 @@
-BasedOnStyle: LLVM
-
----
-Language: Cpp
-Standard: Cpp03
-
-AlwaysBreakTemplateDeclarations: true
-PointerAlignment: Left
-
-# Disable formatting options which may break tests.
-SortIncludes: false
-ReflowComments: false
----
diff --git a/automotive/can/1.0/default/libc++fs/Android.bp b/automotive/can/1.0/default/libc++fs/Android.bp
deleted file mode 100644
index 0641991..0000000
--- a/automotive/can/1.0/default/libc++fs/Android.bp
+++ /dev/null
@@ -1,70 +0,0 @@
-//
-// Copyright (C) 2020 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-
-// TODO(152067309): Stop building this yourself once it's ABI stable and has
-// been made vendor available. Just use libc++fs instead of this.
-
-package {
-    // See: http://go/android-license-faq
-    // A large-scale-change added 'default_applicable_licenses' to import
-    // all of the 'license_kinds' from "hardware_interfaces_license"
-    // to get the below license kinds:
-    //   SPDX-license-identifier-NCSA
-    default_applicable_licenses: ["hardware_interfaces_license"],
-}
-
-cc_defaults {
-    name: "android.hardware.automotive@libc++fsdefaults",
-    local_include_dirs: ["include"],
-    export_include_dirs: ["include"],
-    cflags: [
-        "-Wall",
-        "-Werror",
-        "-Wno-unused-parameter",
-    ],
-    cppflags: [
-        "-std=c++17",
-        "-fexceptions",
-        "-DLIBCXX_BUILDING_LIBCXXABI",
-        "-D_LIBCPP_BUILDING_LIBRARY",
-    ],
-    rtti: true,
-}
-
-cc_library_static {
-    name: "android.hardware.automotive@libc++fs",
-    recovery_available: true,
-    vendor: true,
-    defaults: ["android.hardware.automotive@libc++fsdefaults"],
-    srcs: [
-        "src/filesystem/directory_iterator.cpp",
-        "src/filesystem/operations.cpp",
-    ],
-    multilib: {
-        lib32: {
-            // off_t usage is constrained to within the libc++ source (not the
-            // headers), so we can build the filesystem library with a 64-bit
-            // off_t on LP32 to get large file support without needing all users
-            // of the library to match.
-            cflags: ["-D_FILE_OFFSET_BITS=64"],
-        },
-    },
-    target: {
-        windows: {
-            enabled: false,
-        },
-    },
-}
diff --git a/automotive/can/1.0/default/libc++fs/include/automotive/filesystem b/automotive/can/1.0/default/libc++fs/include/automotive/filesystem
deleted file mode 100644
index bd3dda5..0000000
--- a/automotive/can/1.0/default/libc++fs/include/automotive/filesystem
+++ /dev/null
@@ -1,2713 +0,0 @@
-// -*- C++ -*-
-//===--------------------------- filesystem -------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-#ifndef _LIBAUTO_FILESYSTEM
-#define _LIBAUTO_FILESYSTEM
-
-// TODO(152067309): Remove this once the libc++ upgrade is complete.
-#include <__config>
-#if defined(_LIBCPP_VERSION) && _LIBCPP_VERSION > 8000
-
-#include <filesystem>
-namespace android::hardware::automotive {
-namespace filesystem = std::filesystem;
-}
-
-#else
-
-/*
-    filesystem synopsis
-
-    namespace android::hardware::automotive { namespace filesystem {
-
-    class path;
-
-    void swap(path& lhs, path& rhs) noexcept;
-    size_t hash_value(const path& p) noexcept;
-
-    bool operator==(const path& lhs, const path& rhs) noexcept;
-    bool operator!=(const path& lhs, const path& rhs) noexcept;
-    bool operator< (const path& lhs, const path& rhs) noexcept;
-    bool operator<=(const path& lhs, const path& rhs) noexcept;
-    bool operator> (const path& lhs, const path& rhs) noexcept;
-    bool operator>=(const path& lhs, const path& rhs) noexcept;
-
-    path operator/ (const path& lhs, const path& rhs);
-
-    // fs.path.io operators are friends of path.
-    template <class charT, class traits>
-    friend basic_ostream<charT, traits>&
-    operator<<(basic_ostream<charT, traits>& os, const path& p);
-
-    template <class charT, class traits>
-    friend basic_istream<charT, traits>&
-    operator>>(basic_istream<charT, traits>& is, path& p);
-
-    template <class Source>
-      path u8path(const Source& source);
-    template <class InputIterator>
-      path u8path(InputIterator first, InputIterator last);
-
-    class filesystem_error;
-    class directory_entry;
-
-    class directory_iterator;
-
-    // enable directory_iterator range-based for statements
-    directory_iterator begin(directory_iterator iter) noexcept;
-    directory_iterator end(const directory_iterator&) noexcept;
-
-    class recursive_directory_iterator;
-
-    // enable recursive_directory_iterator range-based for statements
-    recursive_directory_iterator begin(recursive_directory_iterator iter) noexcept;
-    recursive_directory_iterator end(const recursive_directory_iterator&) noexcept;
-
-    class file_status;
-
-    struct space_info
-    {
-      uintmax_t capacity;
-      uintmax_t free;
-      uintmax_t available;
-    };
-
-    enum class file_type;
-    enum class perms;
-    enum class perm_options;
-    enum class copy_options;
-    enum class directory_options;
-
-    typedef chrono::time_point<trivial-clock>  file_time_type;
-
-    // operational functions
-
-    path absolute(const path& p);
-    path absolute(const path& p, error_code &ec);
-
-    path canonical(const path& p);
-    path canonical(const path& p, error_code& ec);
-
-    void copy(const path& from, const path& to);
-    void copy(const path& from, const path& to, error_code& ec);
-    void copy(const path& from, const path& to, copy_options options);
-    void copy(const path& from, const path& to, copy_options options,
-                   error_code& ec);
-
-    bool copy_file(const path& from, const path& to);
-    bool copy_file(const path& from, const path& to, error_code& ec);
-    bool copy_file(const path& from, const path& to, copy_options option);
-    bool copy_file(const path& from, const path& to, copy_options option,
-                           error_code& ec);
-
-    void copy_symlink(const path& existing_symlink, const path& new_symlink);
-    void copy_symlink(const path& existing_symlink, const path& new_symlink,
-                              error_code& ec) noexcept;
-
-    bool create_directories(const path& p);
-    bool create_directories(const path& p, error_code& ec);
-
-    bool create_directory(const path& p);
-    bool create_directory(const path& p, error_code& ec) noexcept;
-
-    bool create_directory(const path& p, const path& attributes);
-    bool create_directory(const path& p, const path& attributes,
-                                  error_code& ec) noexcept;
-
-    void create_directory_symlink(const path& to, const path& new_symlink);
-    void create_directory_symlink(const path& to, const path& new_symlink,
-                                          error_code& ec) noexcept;
-
-    void create_hard_link(const path& to, const path& new_hard_link);
-    void create_hard_link(const path& to, const path& new_hard_link,
-                                  error_code& ec) noexcept;
-
-    void create_symlink(const path& to, const path& new_symlink);
-    void create_symlink(const path& to, const path& new_symlink,
-                                error_code& ec) noexcept;
-
-    path current_path();
-    path current_path(error_code& ec);
-    void current_path(const path& p);
-    void current_path(const path& p, error_code& ec) noexcept;
-
-    bool exists(file_status s) noexcept;
-    bool exists(const path& p);
-    bool exists(const path& p, error_code& ec) noexcept;
-
-    bool equivalent(const path& p1, const path& p2);
-    bool equivalent(const path& p1, const path& p2, error_code& ec) noexcept;
-
-    uintmax_t    file_size(const path& p);
-    uintmax_t    file_size(const path& p, error_code& ec) noexcept;
-
-    uintmax_t    hard_link_count(const path& p);
-    uintmax_t    hard_link_count(const path& p, error_code& ec) noexcept;
-
-    bool is_block_file(file_status s) noexcept;
-    bool is_block_file(const path& p);
-    bool is_block_file(const path& p, error_code& ec) noexcept;
-
-    bool is_character_file(file_status s) noexcept;
-    bool is_character_file(const path& p);
-    bool is_character_file(const path& p, error_code& ec) noexcept;
-
-    bool is_directory(file_status s) noexcept;
-    bool is_directory(const path& p);
-    bool is_directory(const path& p, error_code& ec) noexcept;
-
-    bool is_empty(const path& p);
-    bool is_empty(const path& p, error_code& ec) noexcept;
-
-    bool is_fifo(file_status s) noexcept;
-    bool is_fifo(const path& p);
-    bool is_fifo(const path& p, error_code& ec) noexcept;
-
-    bool is_other(file_status s) noexcept;
-    bool is_other(const path& p);
-    bool is_other(const path& p, error_code& ec) noexcept;
-
-    bool is_regular_file(file_status s) noexcept;
-    bool is_regular_file(const path& p);
-    bool is_regular_file(const path& p, error_code& ec) noexcept;
-
-    bool is_socket(file_status s) noexcept;
-    bool is_socket(const path& p);
-    bool is_socket(const path& p, error_code& ec) noexcept;
-
-    bool is_symlink(file_status s) noexcept;
-    bool is_symlink(const path& p);
-    bool is_symlink(const path& p, error_code& ec) noexcept;
-
-    file_time_type  last_write_time(const path& p);
-    file_time_type  last_write_time(const path& p, error_code& ec) noexcept;
-    void last_write_time(const path& p, file_time_type new_time);
-    void last_write_time(const path& p, file_time_type new_time,
-                                 error_code& ec) noexcept;
-
-    void permissions(const path& p, perms prms,
-                     perm_options opts=perm_options::replace);
-    void permissions(const path& p, perms prms, error_code& ec) noexcept;
-    void permissions(const path& p, perms prms, perm_options opts,
-                     error_code& ec);
-
-    path proximate(const path& p, error_code& ec);
-    path proximate(const path& p, const path& base = current_path());
-    path proximate(const path& p, const path& base, error_code &ec);
-
-    path read_symlink(const path& p);
-    path read_symlink(const path& p, error_code& ec);
-
-    path relative(const path& p, error_code& ec);
-    path relative(const path& p, const path& base=current_path());
-    path relative(const path& p, const path& base, error_code& ec);
-
-    bool remove(const path& p);
-    bool remove(const path& p, error_code& ec) noexcept;
-
-    uintmax_t    remove_all(const path& p);
-    uintmax_t    remove_all(const path& p, error_code& ec);
-
-    void rename(const path& from, const path& to);
-    void rename(const path& from, const path& to, error_code& ec) noexcept;
-
-    void resize_file(const path& p, uintmax_t size);
-    void resize_file(const path& p, uintmax_t size, error_code& ec) noexcept;
-
-    space_info   space(const path& p);
-    space_info   space(const path& p, error_code& ec) noexcept;
-
-    file_status  status(const path& p);
-    file_status  status(const path& p, error_code& ec) noexcept;
-
-    bool status_known(file_status s) noexcept;
-
-    file_status  symlink_status(const path& p);
-    file_status  symlink_status(const path& p, error_code& ec) noexcept;
-
-    path temp_directory_path();
-    path temp_directory_path(error_code& ec);
-
-    path weakly_canonical(path const& p);
-    path weakly_canonical(path const& p, error_code& ec);
-
-
-} }  // namespace android::hardware::automotive::filesystem
-
-*/
-
-#include <__config>
-#include <cstddef>
-#include <cstdlib>
-#include <chrono>
-#include <iterator>
-#include <iosfwd>
-#include <locale>
-#include <memory>
-#include <stack>
-#include <string>
-#include <system_error>
-#include <utility>
-#include <iomanip> // for quoted
-#include <string_view>
-#include <version>
-
-#include <__debug>
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#pragma GCC system_header
-#endif
-
-_LIBCPP_PUSH_MACROS
-#include <__undef_macros>
-
-#ifndef _LIBCPP_CXX03_LANG
-
-namespace android::hardware::automotive::filesystem {
-using namespace std;
-using namespace std::chrono;
-
-using std::basic_string;
-using std::enable_if;
-using std::error_code;
-using std::false_type;
-
-#ifndef _VSTD
-#define _LIBAUTO_UNDEF_VSTD
-#define _VSTD std
-#endif
-
-#ifdef _VSTD_FS
-#pragma push_macro("_VSTD_FS")
-#else
-#define _LIBAUTO_UNDEF_VSTD_FS
-#endif
-#define _VSTD_FS android::hardware::automotive::filesystem
-
-/* Begin copy of _FilesystemClock from include/chrono */
-struct _FilesystemClock {
-#if !defined(_LIBCPP_HAS_NO_INT128)
-  typedef __int128_t rep;
-  typedef nano period;
-#else
-  typedef long long rep;
-  typedef nano period;
-#endif
-
-  typedef chrono::duration<rep, period> duration;
-  typedef chrono::time_point<_FilesystemClock> time_point;
-
-  static _LIBCPP_CONSTEXPR_AFTER_CXX11 const bool is_steady = false;
-
-  _LIBCPP_FUNC_VIS static time_point now() noexcept;
-
-  _LIBCPP_INLINE_VISIBILITY
-  static time_t to_time_t(const time_point& __t) noexcept {
-      typedef chrono::duration<rep> __secs;
-      return time_t(
-          chrono::duration_cast<__secs>(__t.time_since_epoch()).count());
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  static time_point from_time_t(time_t __t) noexcept {
-      typedef chrono::duration<rep> __secs;
-      return time_point(__secs(__t));
-  }
-};
-/* End copy of _FilesystemClock from include/chrono */
-
-typedef chrono::time_point<_FilesystemClock> file_time_type;
-
-struct _LIBCPP_TYPE_VIS space_info {
-  uintmax_t capacity;
-  uintmax_t free;
-  uintmax_t available;
-};
-
-enum class _LIBCPP_ENUM_VIS file_type : signed char {
-  none = 0,
-  not_found = -1,
-  regular = 1,
-  directory = 2,
-  symlink = 3,
-  block = 4,
-  character = 5,
-  fifo = 6,
-  socket = 7,
-  unknown = 8
-};
-
-enum class _LIBCPP_ENUM_VIS perms : unsigned {
-  none = 0,
-
-  owner_read = 0400,
-  owner_write = 0200,
-  owner_exec = 0100,
-  owner_all = 0700,
-
-  group_read = 040,
-  group_write = 020,
-  group_exec = 010,
-  group_all = 070,
-
-  others_read = 04,
-  others_write = 02,
-  others_exec = 01,
-  others_all = 07,
-
-  all = 0777,
-
-  set_uid = 04000,
-  set_gid = 02000,
-  sticky_bit = 01000,
-  mask = 07777,
-  unknown = 0xFFFF,
-};
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr perms operator&(perms _LHS, perms _RHS) {
-  return static_cast<perms>(static_cast<unsigned>(_LHS) &
-                            static_cast<unsigned>(_RHS));
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr perms operator|(perms _LHS, perms _RHS) {
-  return static_cast<perms>(static_cast<unsigned>(_LHS) |
-                            static_cast<unsigned>(_RHS));
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr perms operator^(perms _LHS, perms _RHS) {
-  return static_cast<perms>(static_cast<unsigned>(_LHS) ^
-                            static_cast<unsigned>(_RHS));
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr perms operator~(perms _LHS) {
-  return static_cast<perms>(~static_cast<unsigned>(_LHS));
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline perms& operator&=(perms& _LHS, perms _RHS) { return _LHS = _LHS & _RHS; }
-
-_LIBCPP_INLINE_VISIBILITY
-inline perms& operator|=(perms& _LHS, perms _RHS) { return _LHS = _LHS | _RHS; }
-
-_LIBCPP_INLINE_VISIBILITY
-inline perms& operator^=(perms& _LHS, perms _RHS) { return _LHS = _LHS ^ _RHS; }
-
-enum class _LIBCPP_ENUM_VIS perm_options : unsigned char {
-  replace = 1,
-  add = 2,
-  remove = 4,
-  nofollow = 8
-};
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr perm_options operator&(perm_options _LHS, perm_options _RHS) {
-  return static_cast<perm_options>(static_cast<unsigned>(_LHS) &
-                                   static_cast<unsigned>(_RHS));
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr perm_options operator|(perm_options _LHS, perm_options _RHS) {
-  return static_cast<perm_options>(static_cast<unsigned>(_LHS) |
-                                   static_cast<unsigned>(_RHS));
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr perm_options operator^(perm_options _LHS, perm_options _RHS) {
-  return static_cast<perm_options>(static_cast<unsigned>(_LHS) ^
-                                   static_cast<unsigned>(_RHS));
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr perm_options operator~(perm_options _LHS) {
-  return static_cast<perm_options>(~static_cast<unsigned>(_LHS));
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline perm_options& operator&=(perm_options& _LHS, perm_options _RHS) {
-  return _LHS = _LHS & _RHS;
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline perm_options& operator|=(perm_options& _LHS, perm_options _RHS) {
-  return _LHS = _LHS | _RHS;
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline perm_options& operator^=(perm_options& _LHS, perm_options _RHS) {
-  return _LHS = _LHS ^ _RHS;
-}
-
-enum class _LIBCPP_ENUM_VIS copy_options : unsigned short {
-  none = 0,
-  skip_existing = 1,
-  overwrite_existing = 2,
-  update_existing = 4,
-  recursive = 8,
-  copy_symlinks = 16,
-  skip_symlinks = 32,
-  directories_only = 64,
-  create_symlinks = 128,
-  create_hard_links = 256,
-  __in_recursive_copy = 512,
-};
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr copy_options operator&(copy_options _LHS, copy_options _RHS) {
-  return static_cast<copy_options>(static_cast<unsigned short>(_LHS) &
-                                   static_cast<unsigned short>(_RHS));
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr copy_options operator|(copy_options _LHS, copy_options _RHS) {
-  return static_cast<copy_options>(static_cast<unsigned short>(_LHS) |
-                                   static_cast<unsigned short>(_RHS));
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr copy_options operator^(copy_options _LHS, copy_options _RHS) {
-  return static_cast<copy_options>(static_cast<unsigned short>(_LHS) ^
-                                   static_cast<unsigned short>(_RHS));
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr copy_options operator~(copy_options _LHS) {
-  return static_cast<copy_options>(~static_cast<unsigned short>(_LHS));
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline copy_options& operator&=(copy_options& _LHS, copy_options _RHS) {
-  return _LHS = _LHS & _RHS;
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline copy_options& operator|=(copy_options& _LHS, copy_options _RHS) {
-  return _LHS = _LHS | _RHS;
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline copy_options& operator^=(copy_options& _LHS, copy_options _RHS) {
-  return _LHS = _LHS ^ _RHS;
-}
-
-enum class _LIBCPP_ENUM_VIS directory_options : unsigned char {
-  none = 0,
-  follow_directory_symlink = 1,
-  skip_permission_denied = 2
-};
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr directory_options operator&(directory_options _LHS,
-                                             directory_options _RHS) {
-  return static_cast<directory_options>(static_cast<unsigned char>(_LHS) &
-                                        static_cast<unsigned char>(_RHS));
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr directory_options operator|(directory_options _LHS,
-                                             directory_options _RHS) {
-  return static_cast<directory_options>(static_cast<unsigned char>(_LHS) |
-                                        static_cast<unsigned char>(_RHS));
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr directory_options operator^(directory_options _LHS,
-                                             directory_options _RHS) {
-  return static_cast<directory_options>(static_cast<unsigned char>(_LHS) ^
-                                        static_cast<unsigned char>(_RHS));
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline constexpr directory_options operator~(directory_options _LHS) {
-  return static_cast<directory_options>(~static_cast<unsigned char>(_LHS));
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline directory_options& operator&=(directory_options& _LHS,
-                                     directory_options _RHS) {
-  return _LHS = _LHS & _RHS;
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline directory_options& operator|=(directory_options& _LHS,
-                                     directory_options _RHS) {
-  return _LHS = _LHS | _RHS;
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline directory_options& operator^=(directory_options& _LHS,
-                                     directory_options _RHS) {
-  return _LHS = _LHS ^ _RHS;
-}
-
-class _LIBCPP_TYPE_VIS file_status {
-public:
-  // constructors
-  _LIBCPP_INLINE_VISIBILITY
-  file_status() noexcept : file_status(file_type::none) {}
-  _LIBCPP_INLINE_VISIBILITY
-  explicit file_status(file_type __ft, perms __prms = perms::unknown) noexcept
-      : __ft_(__ft),
-        __prms_(__prms) {}
-
-  file_status(const file_status&) noexcept = default;
-  file_status(file_status&&) noexcept = default;
-
-  _LIBCPP_INLINE_VISIBILITY
-  ~file_status() {}
-
-  file_status& operator=(const file_status&) noexcept = default;
-  file_status& operator=(file_status&&) noexcept = default;
-
-  // observers
-  _LIBCPP_INLINE_VISIBILITY
-  file_type type() const noexcept { return __ft_; }
-
-  _LIBCPP_INLINE_VISIBILITY
-  perms permissions() const noexcept { return __prms_; }
-
-  // modifiers
-  _LIBCPP_INLINE_VISIBILITY
-  void type(file_type __ft) noexcept { __ft_ = __ft; }
-
-  _LIBCPP_INLINE_VISIBILITY
-  void permissions(perms __p) noexcept { __prms_ = __p; }
-
-private:
-  file_type __ft_;
-  perms __prms_;
-};
-
-class _LIBCPP_TYPE_VIS directory_entry;
-
-template <class _Tp>
-struct __can_convert_char {
-  static const bool value = false;
-};
-template <class _Tp>
-struct __can_convert_char<const _Tp> : public __can_convert_char<_Tp> {};
-template <>
-struct __can_convert_char<char> {
-  static const bool value = true;
-  using __char_type = char;
-};
-template <>
-struct __can_convert_char<wchar_t> {
-  static const bool value = true;
-  using __char_type = wchar_t;
-};
-template <>
-struct __can_convert_char<char16_t> {
-  static const bool value = true;
-  using __char_type = char16_t;
-};
-template <>
-struct __can_convert_char<char32_t> {
-  static const bool value = true;
-  using __char_type = char32_t;
-};
-
-template <class _ECharT>
-typename enable_if<__can_convert_char<_ECharT>::value, bool>::type
-__is_separator(_ECharT __e) {
-  return __e == _ECharT('/');
-}
-
-struct _NullSentinal {};
-
-template <class _Tp>
-using _Void = void;
-
-template <class _Tp, class = void>
-struct __is_pathable_string : public false_type {};
-
-template <class _ECharT, class _Traits, class _Alloc>
-struct __is_pathable_string<
-    basic_string<_ECharT, _Traits, _Alloc>,
-    _Void<typename __can_convert_char<_ECharT>::__char_type> >
-    : public __can_convert_char<_ECharT> {
-  using _Str = basic_string<_ECharT, _Traits, _Alloc>;
-  using _Base = __can_convert_char<_ECharT>;
-  static _ECharT const* __range_begin(_Str const& __s) { return __s.data(); }
-  static _ECharT const* __range_end(_Str const& __s) {
-    return __s.data() + __s.length();
-  }
-  static _ECharT __first_or_null(_Str const& __s) {
-    return __s.empty() ? _ECharT{} : __s[0];
-  }
-};
-
-template <class _ECharT, class _Traits>
-struct __is_pathable_string<
-    basic_string_view<_ECharT, _Traits>,
-    _Void<typename __can_convert_char<_ECharT>::__char_type> >
-    : public __can_convert_char<_ECharT> {
-  using _Str = basic_string_view<_ECharT, _Traits>;
-  using _Base = __can_convert_char<_ECharT>;
-  static _ECharT const* __range_begin(_Str const& __s) { return __s.data(); }
-  static _ECharT const* __range_end(_Str const& __s) {
-    return __s.data() + __s.length();
-  }
-  static _ECharT __first_or_null(_Str const& __s) {
-    return __s.empty() ? _ECharT{} : __s[0];
-  }
-};
-
-template <class _Source, class _DS = typename decay<_Source>::type,
-          class _UnqualPtrType =
-              typename remove_const<typename remove_pointer<_DS>::type>::type,
-          bool _IsCharPtr = is_pointer<_DS>::value&&
-              __can_convert_char<_UnqualPtrType>::value>
-struct __is_pathable_char_array : false_type {};
-
-template <class _Source, class _ECharT, class _UPtr>
-struct __is_pathable_char_array<_Source, _ECharT*, _UPtr, true>
-    : __can_convert_char<typename remove_const<_ECharT>::type> {
-  using _Base = __can_convert_char<typename remove_const<_ECharT>::type>;
-
-  static _ECharT const* __range_begin(const _ECharT* __b) { return __b; }
-  static _ECharT const* __range_end(const _ECharT* __b) {
-    using _Iter = const _ECharT*;
-    const _ECharT __sentinal = _ECharT{};
-    _Iter __e = __b;
-    for (; *__e != __sentinal; ++__e)
-      ;
-    return __e;
-  }
-
-  static _ECharT __first_or_null(const _ECharT* __b) { return *__b; }
-};
-
-template <class _Iter, bool _IsIt = __is_input_iterator<_Iter>::value,
-          class = void>
-struct __is_pathable_iter : false_type {};
-
-template <class _Iter>
-struct __is_pathable_iter<
-    _Iter, true,
-    _Void<typename __can_convert_char<
-        typename iterator_traits<_Iter>::value_type>::__char_type> >
-    : __can_convert_char<typename iterator_traits<_Iter>::value_type> {
-  using _ECharT = typename iterator_traits<_Iter>::value_type;
-  using _Base = __can_convert_char<_ECharT>;
-
-  static _Iter __range_begin(_Iter __b) { return __b; }
-  static _NullSentinal __range_end(_Iter) { return _NullSentinal{}; }
-
-  static _ECharT __first_or_null(_Iter __b) { return *__b; }
-};
-
-template <class _Tp, bool _IsStringT = __is_pathable_string<_Tp>::value,
-          bool _IsCharIterT = __is_pathable_char_array<_Tp>::value,
-          bool _IsIterT = !_IsCharIterT && __is_pathable_iter<_Tp>::value>
-struct __is_pathable : false_type {
-  static_assert(!_IsStringT && !_IsCharIterT && !_IsIterT, "Must all be false");
-};
-
-template <class _Tp>
-struct __is_pathable<_Tp, true, false, false> : __is_pathable_string<_Tp> {};
-
-template <class _Tp>
-struct __is_pathable<_Tp, false, true, false> : __is_pathable_char_array<_Tp> {
-};
-
-template <class _Tp>
-struct __is_pathable<_Tp, false, false, true> : __is_pathable_iter<_Tp> {};
-
-template <class _ECharT>
-struct _PathCVT {
-  static_assert(__can_convert_char<_ECharT>::value,
-                "Char type not convertible");
-
-  typedef __narrow_to_utf8<sizeof(_ECharT) * __CHAR_BIT__> _Narrower;
-
-  static void __append_range(string& __dest, _ECharT const* __b,
-                             _ECharT const* __e) {
-    _Narrower()(back_inserter(__dest), __b, __e);
-  }
-
-  template <class _Iter>
-  static void __append_range(string& __dest, _Iter __b, _Iter __e) {
-    static_assert(!is_same<_Iter, _ECharT*>::value, "Call const overload");
-    if (__b == __e)
-      return;
-    basic_string<_ECharT> __tmp(__b, __e);
-    _Narrower()(back_inserter(__dest), __tmp.data(),
-                __tmp.data() + __tmp.length());
-  }
-
-  template <class _Iter>
-  static void __append_range(string& __dest, _Iter __b, _NullSentinal) {
-    static_assert(!is_same<_Iter, _ECharT*>::value, "Call const overload");
-    const _ECharT __sentinal = _ECharT{};
-    if (*__b == __sentinal)
-      return;
-    basic_string<_ECharT> __tmp;
-    for (; *__b != __sentinal; ++__b)
-      __tmp.push_back(*__b);
-    _Narrower()(back_inserter(__dest), __tmp.data(),
-                __tmp.data() + __tmp.length());
-  }
-
-  template <class _Source>
-  static void __append_source(string& __dest, _Source const& __s) {
-    using _Traits = __is_pathable<_Source>;
-    __append_range(__dest, _Traits::__range_begin(__s),
-                   _Traits::__range_end(__s));
-  }
-};
-
-template <>
-struct _PathCVT<char> {
-
-  template <class _Iter>
-  static typename enable_if<__is_exactly_input_iterator<_Iter>::value>::type
-  __append_range(string& __dest, _Iter __b, _Iter __e) {
-    for (; __b != __e; ++__b)
-      __dest.push_back(*__b);
-  }
-
-  template <class _Iter>
-  static typename enable_if<__is_forward_iterator<_Iter>::value>::type
-  __append_range(string& __dest, _Iter __b, _Iter __e) {
-    __dest.__append_forward_unsafe(__b, __e);
-  }
-
-  template <class _Iter>
-  static void __append_range(string& __dest, _Iter __b, _NullSentinal) {
-    const char __sentinal = char{};
-    for (; *__b != __sentinal; ++__b)
-      __dest.push_back(*__b);
-  }
-
-  template <class _Source>
-  static void __append_source(string& __dest, _Source const& __s) {
-    using _Traits = __is_pathable<_Source>;
-    __append_range(__dest, _Traits::__range_begin(__s),
-                   _Traits::__range_end(__s));
-  }
-};
-
-class _LIBCPP_TYPE_VIS path {
-  template <class _SourceOrIter, class _Tp = path&>
-  using _EnableIfPathable =
-      typename enable_if<__is_pathable<_SourceOrIter>::value, _Tp>::type;
-
-  template <class _Tp>
-  using _SourceChar = typename __is_pathable<_Tp>::__char_type;
-
-  template <class _Tp>
-  using _SourceCVT = _PathCVT<_SourceChar<_Tp> >;
-
-public:
-  typedef char value_type;
-  typedef basic_string<value_type> string_type;
-  typedef _VSTD::string_view __string_view;
-  static constexpr value_type preferred_separator = '/';
-
-  enum class _LIBCPP_ENUM_VIS format : unsigned char {
-    auto_format,
-    native_format,
-    generic_format
-  };
-
-  // constructors and destructor
-  _LIBCPP_INLINE_VISIBILITY path() noexcept {}
-  _LIBCPP_INLINE_VISIBILITY path(const path& __p) : __pn_(__p.__pn_) {}
-  _LIBCPP_INLINE_VISIBILITY path(path&& __p) noexcept
-      : __pn_(_VSTD::move(__p.__pn_)) {}
-
-  _LIBCPP_INLINE_VISIBILITY
-  path(string_type&& __s, format = format::auto_format) noexcept
-      : __pn_(_VSTD::move(__s)) {}
-
-  template <class _Source, class = _EnableIfPathable<_Source, void> >
-  path(const _Source& __src, format = format::auto_format) {
-    _SourceCVT<_Source>::__append_source(__pn_, __src);
-  }
-
-  template <class _InputIt>
-  path(_InputIt __first, _InputIt __last, format = format::auto_format) {
-    typedef typename iterator_traits<_InputIt>::value_type _ItVal;
-    _PathCVT<_ItVal>::__append_range(__pn_, __first, __last);
-  }
-
-  // TODO Implement locale conversions.
-  template <class _Source, class = _EnableIfPathable<_Source, void> >
-  path(const _Source& __src, const locale& __loc, format = format::auto_format);
-  template <class _InputIt>
-  path(_InputIt __first, _InputIt _last, const locale& __loc,
-       format = format::auto_format);
-
-  _LIBCPP_INLINE_VISIBILITY
-  ~path() = default;
-
-  // assignments
-  _LIBCPP_INLINE_VISIBILITY
-  path& operator=(const path& __p) {
-    __pn_ = __p.__pn_;
-    return *this;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  path& operator=(path&& __p) noexcept {
-    __pn_ = _VSTD::move(__p.__pn_);
-    return *this;
-  }
-
-  template <class = void>
-  _LIBCPP_INLINE_VISIBILITY path& operator=(string_type&& __s) noexcept {
-    __pn_ = _VSTD::move(__s);
-    return *this;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  path& assign(string_type&& __s) noexcept {
-    __pn_ = _VSTD::move(__s);
-    return *this;
-  }
-
-  template <class _Source>
-  _LIBCPP_INLINE_VISIBILITY _EnableIfPathable<_Source>
-  operator=(const _Source& __src) {
-    return this->assign(__src);
-  }
-
-  template <class _Source>
-  _EnableIfPathable<_Source> assign(const _Source& __src) {
-    __pn_.clear();
-    _SourceCVT<_Source>::__append_source(__pn_, __src);
-    return *this;
-  }
-
-  template <class _InputIt>
-  path& assign(_InputIt __first, _InputIt __last) {
-    typedef typename iterator_traits<_InputIt>::value_type _ItVal;
-    __pn_.clear();
-    _PathCVT<_ItVal>::__append_range(__pn_, __first, __last);
-    return *this;
-  }
-
-private:
-  template <class _ECharT>
-  static bool __source_is_absolute(_ECharT __first_or_null) {
-    return __is_separator(__first_or_null);
-  }
-
-public:
-  // appends
-  path& operator/=(const path& __p) {
-    if (__p.is_absolute()) {
-      __pn_ = __p.__pn_;
-      return *this;
-    }
-    if (has_filename())
-      __pn_ += preferred_separator;
-    __pn_ += __p.native();
-    return *this;
-  }
-
-  // FIXME: Use _LIBCPP_DIAGNOSE_WARNING to produce a diagnostic when __src
-  // is known at compile time to be "/' since the user almost certainly intended
-  // to append a separator instead of overwriting the path with "/"
-  template <class _Source>
-  _LIBCPP_INLINE_VISIBILITY _EnableIfPathable<_Source>
-  operator/=(const _Source& __src) {
-    return this->append(__src);
-  }
-
-  template <class _Source>
-  _EnableIfPathable<_Source> append(const _Source& __src) {
-    using _Traits = __is_pathable<_Source>;
-    using _CVT = _PathCVT<_SourceChar<_Source> >;
-    if (__source_is_absolute(_Traits::__first_or_null(__src)))
-      __pn_.clear();
-    else if (has_filename())
-      __pn_ += preferred_separator;
-    _CVT::__append_source(__pn_, __src);
-    return *this;
-  }
-
-  template <class _InputIt>
-  path& append(_InputIt __first, _InputIt __last) {
-    typedef typename iterator_traits<_InputIt>::value_type _ItVal;
-    static_assert(__can_convert_char<_ItVal>::value, "Must convertible");
-    using _CVT = _PathCVT<_ItVal>;
-    if (__first != __last && __source_is_absolute(*__first))
-      __pn_.clear();
-    else if (has_filename())
-      __pn_ += preferred_separator;
-    _CVT::__append_range(__pn_, __first, __last);
-    return *this;
-  }
-
-  // concatenation
-  _LIBCPP_INLINE_VISIBILITY
-  path& operator+=(const path& __x) {
-    __pn_ += __x.__pn_;
-    return *this;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  path& operator+=(const string_type& __x) {
-    __pn_ += __x;
-    return *this;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  path& operator+=(__string_view __x) {
-    __pn_ += __x;
-    return *this;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  path& operator+=(const value_type* __x) {
-    __pn_ += __x;
-    return *this;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  path& operator+=(value_type __x) {
-    __pn_ += __x;
-    return *this;
-  }
-
-  template <class _ECharT>
-  typename enable_if<__can_convert_char<_ECharT>::value, path&>::type
-  operator+=(_ECharT __x) {
-    basic_string<_ECharT> __tmp;
-    __tmp += __x;
-    _PathCVT<_ECharT>::__append_source(__pn_, __tmp);
-    return *this;
-  }
-
-  template <class _Source>
-  _EnableIfPathable<_Source> operator+=(const _Source& __x) {
-    return this->concat(__x);
-  }
-
-  template <class _Source>
-  _EnableIfPathable<_Source> concat(const _Source& __x) {
-    _SourceCVT<_Source>::__append_source(__pn_, __x);
-    return *this;
-  }
-
-  template <class _InputIt>
-  path& concat(_InputIt __first, _InputIt __last) {
-    typedef typename iterator_traits<_InputIt>::value_type _ItVal;
-    _PathCVT<_ItVal>::__append_range(__pn_, __first, __last);
-    return *this;
-  }
-
-  // modifiers
-  _LIBCPP_INLINE_VISIBILITY
-  void clear() noexcept { __pn_.clear(); }
-
-  path& make_preferred() { return *this; }
-
-  _LIBCPP_INLINE_VISIBILITY
-  path& remove_filename() {
-    auto __fname = __filename();
-    if (!__fname.empty())
-      __pn_.erase(__fname.data() - __pn_.data());
-    return *this;
-  }
-
-  path& replace_filename(const path& __replacement) {
-    remove_filename();
-    return (*this /= __replacement);
-  }
-
-  path& replace_extension(const path& __replacement = path());
-
-  _LIBCPP_INLINE_VISIBILITY
-  void swap(path& __rhs) noexcept { __pn_.swap(__rhs.__pn_); }
-
-  // private helper to allow reserving memory in the path
-  _LIBCPP_INLINE_VISIBILITY
-  void __reserve(size_t __s) { __pn_.reserve(__s); }
-
-  // native format observers
-  _LIBCPP_INLINE_VISIBILITY
-  const string_type& native() const noexcept { return __pn_; }
-
-  _LIBCPP_INLINE_VISIBILITY
-  const value_type* c_str() const noexcept { return __pn_.c_str(); }
-
-  _LIBCPP_INLINE_VISIBILITY operator string_type() const { return __pn_; }
-
-  template <class _ECharT, class _Traits = char_traits<_ECharT>,
-            class _Allocator = allocator<_ECharT> >
-  basic_string<_ECharT, _Traits, _Allocator>
-  string(const _Allocator& __a = _Allocator()) const {
-    using _CVT = __widen_from_utf8<sizeof(_ECharT) * __CHAR_BIT__>;
-    using _Str = basic_string<_ECharT, _Traits, _Allocator>;
-    _Str __s(__a);
-    __s.reserve(__pn_.size());
-    _CVT()(back_inserter(__s), __pn_.data(), __pn_.data() + __pn_.size());
-    return __s;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY std::string string() const { return __pn_; }
-  _LIBCPP_INLINE_VISIBILITY std::wstring wstring() const {
-    return string<wchar_t>();
-  }
-  _LIBCPP_INLINE_VISIBILITY std::string u8string() const { return __pn_; }
-  _LIBCPP_INLINE_VISIBILITY std::u16string u16string() const {
-    return string<char16_t>();
-  }
-  _LIBCPP_INLINE_VISIBILITY std::u32string u32string() const {
-    return string<char32_t>();
-  }
-
-  // generic format observers
-  template <class _ECharT, class _Traits = char_traits<_ECharT>,
-            class _Allocator = allocator<_ECharT> >
-  basic_string<_ECharT, _Traits, _Allocator>
-  generic_string(const _Allocator& __a = _Allocator()) const {
-    return string<_ECharT, _Traits, _Allocator>(__a);
-  }
-
-  std::string generic_string() const { return __pn_; }
-  std::wstring generic_wstring() const { return string<wchar_t>(); }
-  std::string generic_u8string() const { return __pn_; }
-  std::u16string generic_u16string() const { return string<char16_t>(); }
-  std::u32string generic_u32string() const { return string<char32_t>(); }
-
-private:
-  int __compare(__string_view) const;
-  __string_view __root_name() const;
-  __string_view __root_directory() const;
-  __string_view __root_path_raw() const;
-  __string_view __relative_path() const;
-  __string_view __parent_path() const;
-  __string_view __filename() const;
-  __string_view __stem() const;
-  __string_view __extension() const;
-
-public:
-  // compare
-  _LIBCPP_INLINE_VISIBILITY int compare(const path& __p) const noexcept {
-    return __compare(__p.__pn_);
-  }
-  _LIBCPP_INLINE_VISIBILITY int compare(const string_type& __s) const {
-    return __compare(__s);
-  }
-  _LIBCPP_INLINE_VISIBILITY int compare(__string_view __s) const {
-    return __compare(__s);
-  }
-  _LIBCPP_INLINE_VISIBILITY int compare(const value_type* __s) const {
-    return __compare(__s);
-  }
-
-  // decomposition
-  _LIBCPP_INLINE_VISIBILITY path root_name() const {
-    return string_type(__root_name());
-  }
-  _LIBCPP_INLINE_VISIBILITY path root_directory() const {
-    return string_type(__root_directory());
-  }
-  _LIBCPP_INLINE_VISIBILITY path root_path() const {
-    return root_name().append(string_type(__root_directory()));
-  }
-  _LIBCPP_INLINE_VISIBILITY path relative_path() const {
-    return string_type(__relative_path());
-  }
-  _LIBCPP_INLINE_VISIBILITY path parent_path() const {
-    return string_type(__parent_path());
-  }
-  _LIBCPP_INLINE_VISIBILITY path filename() const {
-    return string_type(__filename());
-  }
-  _LIBCPP_INLINE_VISIBILITY path stem() const { return string_type(__stem()); }
-  _LIBCPP_INLINE_VISIBILITY path extension() const {
-    return string_type(__extension());
-  }
-
-  // query
-  _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY bool
-  empty() const noexcept {
-    return __pn_.empty();
-  }
-
-  _LIBCPP_INLINE_VISIBILITY bool has_root_name() const {
-    return !__root_name().empty();
-  }
-  _LIBCPP_INLINE_VISIBILITY bool has_root_directory() const {
-    return !__root_directory().empty();
-  }
-  _LIBCPP_INLINE_VISIBILITY bool has_root_path() const {
-    return !__root_path_raw().empty();
-  }
-  _LIBCPP_INLINE_VISIBILITY bool has_relative_path() const {
-    return !__relative_path().empty();
-  }
-  _LIBCPP_INLINE_VISIBILITY bool has_parent_path() const {
-    return !__parent_path().empty();
-  }
-  _LIBCPP_INLINE_VISIBILITY bool has_filename() const {
-    return !__filename().empty();
-  }
-  _LIBCPP_INLINE_VISIBILITY bool has_stem() const { return !__stem().empty(); }
-  _LIBCPP_INLINE_VISIBILITY bool has_extension() const {
-    return !__extension().empty();
-  }
-
-  _LIBCPP_INLINE_VISIBILITY bool is_absolute() const {
-    return has_root_directory();
-  }
-  _LIBCPP_INLINE_VISIBILITY bool is_relative() const { return !is_absolute(); }
-
-  // relative paths
-  path lexically_normal() const;
-  path lexically_relative(const path& __base) const;
-
-  _LIBCPP_INLINE_VISIBILITY path lexically_proximate(const path& __base) const {
-    path __result = this->lexically_relative(__base);
-    if (__result.native().empty())
-      return *this;
-    return __result;
-  }
-
-  // iterators
-  class _LIBCPP_TYPE_VIS iterator;
-  typedef iterator const_iterator;
-
-  iterator begin() const;
-  iterator end() const;
-
-  template <class _CharT, class _Traits>
-  _LIBCPP_INLINE_VISIBILITY friend
-      typename enable_if<is_same<_CharT, char>::value &&
-                             is_same<_Traits, char_traits<char> >::value,
-                         basic_ostream<_CharT, _Traits>&>::type
-      operator<<(basic_ostream<_CharT, _Traits>& __os, const path& __p) {
-    __os << std::__quoted(__p.native());
-    return __os;
-  }
-
-  template <class _CharT, class _Traits>
-  _LIBCPP_INLINE_VISIBILITY friend
-      typename enable_if<!is_same<_CharT, char>::value ||
-                             !is_same<_Traits, char_traits<char> >::value,
-                         basic_ostream<_CharT, _Traits>&>::type
-      operator<<(basic_ostream<_CharT, _Traits>& __os, const path& __p) {
-    __os << std::__quoted(__p.string<_CharT, _Traits>());
-    return __os;
-  }
-
-  template <class _CharT, class _Traits>
-  _LIBCPP_INLINE_VISIBILITY friend basic_istream<_CharT, _Traits>&
-  operator>>(basic_istream<_CharT, _Traits>& __is, path& __p) {
-    basic_string<_CharT, _Traits> __tmp;
-    __is >> __quoted(__tmp);
-    __p = __tmp;
-    return __is;
-  }
-
-  friend _LIBCPP_INLINE_VISIBILITY bool operator==(const path& __lhs, const path& __rhs) noexcept {
-    return __lhs.compare(__rhs) == 0;
-  }
-  friend _LIBCPP_INLINE_VISIBILITY bool operator!=(const path& __lhs, const path& __rhs) noexcept {
-    return __lhs.compare(__rhs) != 0;
-  }
-  friend _LIBCPP_INLINE_VISIBILITY bool operator<(const path& __lhs, const path& __rhs) noexcept {
-    return __lhs.compare(__rhs) < 0;
-  }
-  friend _LIBCPP_INLINE_VISIBILITY bool operator<=(const path& __lhs, const path& __rhs) noexcept {
-    return __lhs.compare(__rhs) <= 0;
-  }
-  friend _LIBCPP_INLINE_VISIBILITY bool operator>(const path& __lhs, const path& __rhs) noexcept {
-    return __lhs.compare(__rhs) > 0;
-  }
-  friend _LIBCPP_INLINE_VISIBILITY bool operator>=(const path& __lhs, const path& __rhs) noexcept {
-    return __lhs.compare(__rhs) >= 0;
-  }
-
-  friend _LIBCPP_INLINE_VISIBILITY path operator/(const path& __lhs,
-                                                  const path& __rhs) {
-    path __result(__lhs);
-    __result /= __rhs;
-    return __result;
-  }
-private:
-  inline _LIBCPP_INLINE_VISIBILITY path&
-  __assign_view(__string_view const& __s) noexcept {
-    __pn_ = string_type(__s);
-    return *this;
-  }
-  string_type __pn_;
-};
-
-inline _LIBCPP_INLINE_VISIBILITY void swap(path& __lhs, path& __rhs) noexcept {
-  __lhs.swap(__rhs);
-}
-
-_LIBCPP_FUNC_VIS
-size_t hash_value(const path& __p) noexcept;
-
-template <class _Source>
-_LIBCPP_INLINE_VISIBILITY
-    typename enable_if<__is_pathable<_Source>::value, path>::type
-    u8path(const _Source& __s) {
-  static_assert(
-      is_same<typename __is_pathable<_Source>::__char_type, char>::value,
-      "u8path(Source const&) requires Source have a character type of type "
-      "'char'");
-  return path(__s);
-}
-
-template <class _InputIt>
-_LIBCPP_INLINE_VISIBILITY
-    typename enable_if<__is_pathable<_InputIt>::value, path>::type
-    u8path(_InputIt __f, _InputIt __l) {
-  static_assert(
-      is_same<typename __is_pathable<_InputIt>::__char_type, char>::value,
-      "u8path(Iter, Iter) requires Iter have a value_type of type 'char'");
-  return path(__f, __l);
-}
-
-class _LIBCPP_TYPE_VIS path::iterator {
-public:
-  enum _ParserState : unsigned char {
-    _Singular,
-    _BeforeBegin,
-    _InRootName,
-    _InRootDir,
-    _InFilenames,
-    _InTrailingSep,
-    _AtEnd
-  };
-
-public:
-  typedef bidirectional_iterator_tag iterator_category;
-
-  typedef path value_type;
-  typedef std::ptrdiff_t difference_type;
-  typedef const path* pointer;
-  typedef const path& reference;
-
-  typedef void
-      __stashing_iterator_tag; // See reverse_iterator and __is_stashing_iterator
-
-public:
-  _LIBCPP_INLINE_VISIBILITY
-  iterator()
-      : __stashed_elem_(), __path_ptr_(nullptr), __entry_(),
-        __state_(_Singular) {}
-
-  iterator(const iterator&) = default;
-  ~iterator() = default;
-
-  iterator& operator=(const iterator&) = default;
-
-  _LIBCPP_INLINE_VISIBILITY
-  reference operator*() const { return __stashed_elem_; }
-
-  _LIBCPP_INLINE_VISIBILITY
-  pointer operator->() const { return &__stashed_elem_; }
-
-  _LIBCPP_INLINE_VISIBILITY
-  iterator& operator++() {
-    _LIBCPP_ASSERT(__state_ != _Singular,
-                   "attempting to increment a singular iterator");
-    _LIBCPP_ASSERT(__state_ != _AtEnd,
-                   "attempting to increment the end iterator");
-    return __increment();
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  iterator operator++(int) {
-    iterator __it(*this);
-    this->operator++();
-    return __it;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  iterator& operator--() {
-    _LIBCPP_ASSERT(__state_ != _Singular,
-                   "attempting to decrement a singular iterator");
-    _LIBCPP_ASSERT(__entry_.data() != __path_ptr_->native().data(),
-                   "attempting to decrement the begin iterator");
-    return __decrement();
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  iterator operator--(int) {
-    iterator __it(*this);
-    this->operator--();
-    return __it;
-  }
-
-private:
-  friend class path;
-
-  inline _LIBCPP_INLINE_VISIBILITY friend bool operator==(const iterator&,
-                                                          const iterator&);
-
-  iterator& __increment();
-  iterator& __decrement();
-
-  path __stashed_elem_;
-  const path* __path_ptr_;
-  path::__string_view __entry_;
-  _ParserState __state_;
-};
-
-inline _LIBCPP_INLINE_VISIBILITY bool operator==(const path::iterator& __lhs,
-                                                 const path::iterator& __rhs) {
-  return __lhs.__path_ptr_ == __rhs.__path_ptr_ &&
-         __lhs.__entry_.data() == __rhs.__entry_.data();
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool operator!=(const path::iterator& __lhs,
-                                                 const path::iterator& __rhs) {
-  return !(__lhs == __rhs);
-}
-
-class _LIBCPP_EXCEPTION_ABI filesystem_error : public system_error {
-public:
-  _LIBCPP_INLINE_VISIBILITY
-  filesystem_error(const string& __what, error_code __ec)
-      : system_error(__ec, __what),
-        __storage_(make_shared<_Storage>(path(), path())) {
-    __create_what(0);
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  filesystem_error(const string& __what, const path& __p1, error_code __ec)
-      : system_error(__ec, __what),
-        __storage_(make_shared<_Storage>(__p1, path())) {
-    __create_what(1);
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  filesystem_error(const string& __what, const path& __p1, const path& __p2,
-                   error_code __ec)
-      : system_error(__ec, __what),
-        __storage_(make_shared<_Storage>(__p1, __p2)) {
-    __create_what(2);
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  const path& path1() const noexcept { return __storage_->__p1_; }
-
-  _LIBCPP_INLINE_VISIBILITY
-  const path& path2() const noexcept { return __storage_->__p2_; }
-
-  ~filesystem_error() override; // key function
-
-  _LIBCPP_INLINE_VISIBILITY
-  const char* what() const noexcept override {
-    return __storage_->__what_.c_str();
-  }
-
-  _LIBCPP_FUNC_VIS
-  void __create_what(int __num_paths);
-
-private:
-  struct _Storage {
-    _LIBCPP_INLINE_VISIBILITY
-    _Storage(const path& __p1, const path& __p2) : __p1_(__p1), __p2_(__p2) {}
-
-    path __p1_;
-    path __p2_;
-    string __what_;
-  };
-  shared_ptr<_Storage> __storage_;
-};
-
-template <class... _Args>
-_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
-#ifndef _LIBCPP_NO_EXCEPTIONS
-    void
-    __throw_filesystem_error(_Args&&... __args) {
-  throw filesystem_error(std::forward<_Args>(__args)...);
-}
-#else
-    void
-    __throw_filesystem_error(_Args&&...) {
-  _VSTD::abort();
-}
-#endif
-
-// operational functions
-
-_LIBCPP_FUNC_VIS
-path __absolute(const path&, error_code* __ec = nullptr);
-_LIBCPP_FUNC_VIS
-path __canonical(const path&, error_code* __ec = nullptr);
-_LIBCPP_FUNC_VIS
-void __copy(const path& __from, const path& __to, copy_options __opt,
-            error_code* __ec = nullptr);
-_LIBCPP_FUNC_VIS
-bool __copy_file(const path& __from, const path& __to, copy_options __opt,
-                 error_code* __ec = nullptr);
-_LIBCPP_FUNC_VIS
-void __copy_symlink(const path& __existing_symlink, const path& __new_symlink,
-                    error_code* __ec = nullptr);
-_LIBCPP_FUNC_VIS
-bool __create_directories(const path& p, error_code* ec = nullptr);
-_LIBCPP_FUNC_VIS
-bool __create_directory(const path& p, error_code* ec = nullptr);
-_LIBCPP_FUNC_VIS
-bool __create_directory(const path& p, const path& attributes,
-                        error_code* ec = nullptr);
-_LIBCPP_FUNC_VIS
-void __create_directory_symlink(const path& __to, const path& __new_symlink,
-                                error_code* __ec = nullptr);
-_LIBCPP_FUNC_VIS
-void __create_hard_link(const path& __to, const path& __new_hard_link,
-                        error_code* __ec = nullptr);
-_LIBCPP_FUNC_VIS
-void __create_symlink(const path& __to, const path& __new_symlink,
-                      error_code* __ec = nullptr);
-_LIBCPP_FUNC_VIS
-path __current_path(error_code* __ec = nullptr);
-_LIBCPP_FUNC_VIS
-void __current_path(const path&, error_code* __ec = nullptr);
-_LIBCPP_FUNC_VIS
-bool __equivalent(const path&, const path&, error_code* __ec = nullptr);
-_LIBCPP_FUNC_VIS
-uintmax_t __file_size(const path&, error_code* __ec = nullptr);
-_LIBCPP_FUNC_VIS
-uintmax_t __hard_link_count(const path&, error_code* __ec = nullptr);
-_LIBCPP_FUNC_VIS
-bool __fs_is_empty(const path& p, error_code* ec = nullptr);
-_LIBCPP_FUNC_VIS
-file_time_type __last_write_time(const path& p, error_code* ec = nullptr);
-_LIBCPP_FUNC_VIS
-void __last_write_time(const path& p, file_time_type new_time,
-                       error_code* ec = nullptr);
-_LIBCPP_FUNC_VIS
-void __permissions(const path&, perms, perm_options, error_code* = nullptr);
-_LIBCPP_FUNC_VIS
-path __read_symlink(const path& p, error_code* ec = nullptr);
-_LIBCPP_FUNC_VIS
-bool __remove(const path& p, error_code* ec = nullptr);
-_LIBCPP_FUNC_VIS
-uintmax_t __remove_all(const path& p, error_code* ec = nullptr);
-_LIBCPP_FUNC_VIS
-void __rename(const path& from, const path& to, error_code* ec = nullptr);
-_LIBCPP_FUNC_VIS
-void __resize_file(const path& p, uintmax_t size, error_code* ec = nullptr);
-_LIBCPP_FUNC_VIS
-space_info __space(const path&, error_code* __ec = nullptr);
-_LIBCPP_FUNC_VIS
-file_status __status(const path&, error_code* __ec = nullptr);
-_LIBCPP_FUNC_VIS
-file_status __symlink_status(const path&, error_code* __ec = nullptr);
-_LIBCPP_FUNC_VIS
-path __system_complete(const path&, error_code* __ec = nullptr);
-_LIBCPP_FUNC_VIS
-path __temp_directory_path(error_code* __ec = nullptr);
-_LIBCPP_FUNC_VIS
-path __weakly_canonical(path const& __p, error_code* __ec = nullptr);
-
-inline _LIBCPP_INLINE_VISIBILITY path current_path() {
-  return __current_path();
-}
-
-inline _LIBCPP_INLINE_VISIBILITY path current_path(error_code& __ec) {
-  return __current_path(&__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void current_path(const path& __p) {
-  __current_path(__p);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void current_path(const path& __p,
-                                                   error_code& __ec) noexcept {
-  __current_path(__p, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY path absolute(const path& __p) {
-  return __absolute(__p);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY path absolute(const path& __p,
-                                               error_code& __ec) {
-  return __absolute(__p, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY path canonical(const path& __p) {
-  return __canonical(__p);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY path canonical(const path& __p,
-                                                error_code& __ec) {
-  return __canonical(__p, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void copy(const path& __from,
-                                           const path& __to) {
-  __copy(__from, __to, copy_options::none);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void copy(const path& __from, const path& __to,
-                                           error_code& __ec) {
-  __copy(__from, __to, copy_options::none, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void copy(const path& __from, const path& __to,
-                                           copy_options __opt) {
-  __copy(__from, __to, __opt);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void copy(const path& __from, const path& __to,
-                                           copy_options __opt,
-                                           error_code& __ec) {
-  __copy(__from, __to, __opt, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool copy_file(const path& __from,
-                                                const path& __to) {
-  return __copy_file(__from, __to, copy_options::none);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool
-copy_file(const path& __from, const path& __to, error_code& __ec) {
-  return __copy_file(__from, __to, copy_options::none, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool
-copy_file(const path& __from, const path& __to, copy_options __opt) {
-  return __copy_file(__from, __to, __opt);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool copy_file(const path& __from,
-                                                const path& __to,
-                                                copy_options __opt,
-                                                error_code& __ec) {
-  return __copy_file(__from, __to, __opt, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void copy_symlink(const path& __existing,
-                                                   const path& __new) {
-  __copy_symlink(__existing, __new);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void
-copy_symlink(const path& __ext, const path& __new, error_code& __ec) noexcept {
-  __copy_symlink(__ext, __new, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool create_directories(const path& __p) {
-  return __create_directories(__p);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool create_directories(const path& __p,
-                                                         error_code& __ec) {
-  return __create_directories(__p, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool create_directory(const path& __p) {
-  return __create_directory(__p);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool
-create_directory(const path& __p, error_code& __ec) noexcept {
-  return __create_directory(__p, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool create_directory(const path& __p,
-                                                       const path& __attrs) {
-  return __create_directory(__p, __attrs);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool
-create_directory(const path& __p, const path& __attrs,
-                 error_code& __ec) noexcept {
-  return __create_directory(__p, __attrs, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void
-create_directory_symlink(const path& __to, const path& __new) {
-  __create_directory_symlink(__to, __new);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void
-create_directory_symlink(const path& __to, const path& __new,
-                         error_code& __ec) noexcept {
-  __create_directory_symlink(__to, __new, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void create_hard_link(const path& __to,
-                                                       const path& __new) {
-  __create_hard_link(__to, __new);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void
-create_hard_link(const path& __to, const path& __new,
-                 error_code& __ec) noexcept {
-  __create_hard_link(__to, __new, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void create_symlink(const path& __to,
-                                                     const path& __new) {
-  __create_symlink(__to, __new);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void
-create_symlink(const path& __to, const path& __new, error_code& __ec) noexcept {
-  return __create_symlink(__to, __new, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool status_known(file_status __s) noexcept {
-  return __s.type() != file_type::none;
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool exists(file_status __s) noexcept {
-  return status_known(__s) && __s.type() != file_type::not_found;
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool exists(const path& __p) {
-  return exists(__status(__p));
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool exists(const path& __p,
-                                             error_code& __ec) noexcept {
-  auto __s = __status(__p, &__ec);
-  if (status_known(__s))
-    __ec.clear();
-  return exists(__s);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool equivalent(const path& __p1,
-                                                 const path& __p2) {
-  return __equivalent(__p1, __p2);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool
-equivalent(const path& __p1, const path& __p2, error_code& __ec) noexcept {
-  return __equivalent(__p1, __p2, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY uintmax_t file_size(const path& __p) {
-  return __file_size(__p);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY uintmax_t
-file_size(const path& __p, error_code& __ec) noexcept {
-  return __file_size(__p, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY uintmax_t hard_link_count(const path& __p) {
-  return __hard_link_count(__p);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY uintmax_t
-hard_link_count(const path& __p, error_code& __ec) noexcept {
-  return __hard_link_count(__p, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_block_file(file_status __s) noexcept {
-  return __s.type() == file_type::block;
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_block_file(const path& __p) {
-  return is_block_file(__status(__p));
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_block_file(const path& __p,
-                                                    error_code& __ec) noexcept {
-  return is_block_file(__status(__p, &__ec));
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool
-is_character_file(file_status __s) noexcept {
-  return __s.type() == file_type::character;
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_character_file(const path& __p) {
-  return is_character_file(__status(__p));
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool
-is_character_file(const path& __p, error_code& __ec) noexcept {
-  return is_character_file(__status(__p, &__ec));
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_directory(file_status __s) noexcept {
-  return __s.type() == file_type::directory;
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_directory(const path& __p) {
-  return is_directory(__status(__p));
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_directory(const path& __p,
-                                                   error_code& __ec) noexcept {
-  return is_directory(__status(__p, &__ec));
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_empty(const path& __p) {
-  return __fs_is_empty(__p);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_empty(const path& __p,
-                                               error_code& __ec) {
-  return __fs_is_empty(__p, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_fifo(file_status __s) noexcept {
-  return __s.type() == file_type::fifo;
-}
-inline _LIBCPP_INLINE_VISIBILITY bool is_fifo(const path& __p) {
-  return is_fifo(__status(__p));
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_fifo(const path& __p,
-                                              error_code& __ec) noexcept {
-  return is_fifo(__status(__p, &__ec));
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool
-is_regular_file(file_status __s) noexcept {
-  return __s.type() == file_type::regular;
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_regular_file(const path& __p) {
-  return is_regular_file(__status(__p));
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool
-is_regular_file(const path& __p, error_code& __ec) noexcept {
-  return is_regular_file(__status(__p, &__ec));
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_socket(file_status __s) noexcept {
-  return __s.type() == file_type::socket;
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_socket(const path& __p) {
-  return is_socket(__status(__p));
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_socket(const path& __p,
-                                                error_code& __ec) noexcept {
-  return is_socket(__status(__p, &__ec));
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_symlink(file_status __s) noexcept {
-  return __s.type() == file_type::symlink;
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_symlink(const path& __p) {
-  return is_symlink(__symlink_status(__p));
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_symlink(const path& __p,
-                                                 error_code& __ec) noexcept {
-  return is_symlink(__symlink_status(__p, &__ec));
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_other(file_status __s) noexcept {
-  return exists(__s) && !is_regular_file(__s) && !is_directory(__s) &&
-         !is_symlink(__s);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_other(const path& __p) {
-  return is_other(__status(__p));
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool is_other(const path& __p,
-                                               error_code& __ec) noexcept {
-  return is_other(__status(__p, &__ec));
-}
-
-inline _LIBCPP_INLINE_VISIBILITY file_time_type
-last_write_time(const path& __p) {
-  return __last_write_time(__p);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY file_time_type
-last_write_time(const path& __p, error_code& __ec) noexcept {
-  return __last_write_time(__p, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void last_write_time(const path& __p,
-                                                      file_time_type __t) {
-  __last_write_time(__p, __t);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void
-last_write_time(const path& __p, file_time_type __t,
-                error_code& __ec) noexcept {
-  __last_write_time(__p, __t, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void
-permissions(const path& __p, perms __prms,
-            perm_options __opts = perm_options::replace) {
-  __permissions(__p, __prms, __opts);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void permissions(const path& __p, perms __prms,
-                                                  error_code& __ec) noexcept {
-  __permissions(__p, __prms, perm_options::replace, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void permissions(const path& __p, perms __prms,
-                                                  perm_options __opts,
-                                                  error_code& __ec) {
-  __permissions(__p, __prms, __opts, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY path proximate(const path& __p,
-                                                const path& __base,
-                                                error_code& __ec) {
-  path __tmp = __weakly_canonical(__p, &__ec);
-  if (__ec)
-    return {};
-  path __tmp_base = __weakly_canonical(__base, &__ec);
-  if (__ec)
-    return {};
-  return __tmp.lexically_proximate(__tmp_base);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY path proximate(const path& __p,
-                                                error_code& __ec) {
-  return proximate(__p, current_path(), __ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY path
-proximate(const path& __p, const path& __base = current_path()) {
-  return __weakly_canonical(__p).lexically_proximate(
-      __weakly_canonical(__base));
-}
-
-inline _LIBCPP_INLINE_VISIBILITY path read_symlink(const path& __p) {
-  return __read_symlink(__p);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY path read_symlink(const path& __p,
-                                                   error_code& __ec) {
-  return __read_symlink(__p, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY path relative(const path& __p,
-                                               const path& __base,
-                                               error_code& __ec) {
-  path __tmp = __weakly_canonical(__p, &__ec);
-  if (__ec)
-    return path();
-  path __tmpbase = __weakly_canonical(__base, &__ec);
-  if (__ec)
-    return path();
-  return __tmp.lexically_relative(__tmpbase);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY path relative(const path& __p,
-                                               error_code& __ec) {
-  return relative(__p, current_path(), __ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY path
-relative(const path& __p, const path& __base = current_path()) {
-  return __weakly_canonical(__p).lexically_relative(__weakly_canonical(__base));
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool remove(const path& __p) {
-  return __remove(__p);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool remove(const path& __p,
-                                             error_code& __ec) noexcept {
-  return __remove(__p, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY uintmax_t remove_all(const path& __p) {
-  return __remove_all(__p);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY uintmax_t remove_all(const path& __p,
-                                                      error_code& __ec) {
-  return __remove_all(__p, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void rename(const path& __from,
-                                             const path& __to) {
-  return __rename(__from, __to);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void
-rename(const path& __from, const path& __to, error_code& __ec) noexcept {
-  return __rename(__from, __to, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void resize_file(const path& __p,
-                                                  uintmax_t __ns) {
-  return __resize_file(__p, __ns);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY void
-resize_file(const path& __p, uintmax_t __ns, error_code& __ec) noexcept {
-  return __resize_file(__p, __ns, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY space_info space(const path& __p) {
-  return __space(__p);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY space_info space(const path& __p,
-                                                  error_code& __ec) noexcept {
-  return __space(__p, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY file_status status(const path& __p) {
-  return __status(__p);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY file_status status(const path& __p,
-                                                    error_code& __ec) noexcept {
-  return __status(__p, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY file_status symlink_status(const path& __p) {
-  return __symlink_status(__p);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY file_status
-symlink_status(const path& __p, error_code& __ec) noexcept {
-  return __symlink_status(__p, &__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY path temp_directory_path() {
-  return __temp_directory_path();
-}
-
-inline _LIBCPP_INLINE_VISIBILITY path temp_directory_path(error_code& __ec) {
-  return __temp_directory_path(&__ec);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY path weakly_canonical(path const& __p) {
-  return __weakly_canonical(__p);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY path weakly_canonical(path const& __p,
-                                                       error_code& __ec) {
-  return __weakly_canonical(__p, &__ec);
-}
-
-class directory_iterator;
-class recursive_directory_iterator;
-class __dir_stream;
-
-class directory_entry {
-  typedef _VSTD_FS::path _Path;
-
-public:
-  // constructors and destructors
-  directory_entry() noexcept = default;
-  directory_entry(directory_entry const&) = default;
-  directory_entry(directory_entry&&) noexcept = default;
-
-  _LIBCPP_INLINE_VISIBILITY
-  explicit directory_entry(_Path const& __p) : __p_(__p) {
-    error_code __ec;
-    __refresh(&__ec);
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  directory_entry(_Path const& __p, error_code& __ec) : __p_(__p) {
-    __refresh(&__ec);
-  }
-
-  ~directory_entry() {}
-
-  directory_entry& operator=(directory_entry const&) = default;
-  directory_entry& operator=(directory_entry&&) noexcept = default;
-
-  _LIBCPP_INLINE_VISIBILITY
-  void assign(_Path const& __p) {
-    __p_ = __p;
-    error_code __ec;
-    __refresh(&__ec);
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  void assign(_Path const& __p, error_code& __ec) {
-    __p_ = __p;
-    __refresh(&__ec);
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  void replace_filename(_Path const& __p) {
-    __p_.replace_filename(__p);
-    error_code __ec;
-    __refresh(&__ec);
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  void replace_filename(_Path const& __p, error_code& __ec) {
-    __p_ = __p_.parent_path() / __p;
-    __refresh(&__ec);
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  void refresh() { __refresh(); }
-
-  _LIBCPP_INLINE_VISIBILITY
-  void refresh(error_code& __ec) noexcept { __refresh(&__ec); }
-
-  _LIBCPP_INLINE_VISIBILITY
-  _Path const& path() const noexcept { return __p_; }
-
-  _LIBCPP_INLINE_VISIBILITY
-  operator const _Path&() const noexcept { return __p_; }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool exists() const { return _VSTD_FS::exists(file_status{__get_ft()}); }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool exists(error_code& __ec) const noexcept {
-    return _VSTD_FS::exists(file_status{__get_ft(&__ec)});
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool is_block_file() const { return __get_ft() == file_type::block; }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool is_block_file(error_code& __ec) const noexcept {
-    return __get_ft(&__ec) == file_type::block;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool is_character_file() const { return __get_ft() == file_type::character; }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool is_character_file(error_code& __ec) const noexcept {
-    return __get_ft(&__ec) == file_type::character;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool is_directory() const { return __get_ft() == file_type::directory; }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool is_directory(error_code& __ec) const noexcept {
-    return __get_ft(&__ec) == file_type::directory;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool is_fifo() const { return __get_ft() == file_type::fifo; }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool is_fifo(error_code& __ec) const noexcept {
-    return __get_ft(&__ec) == file_type::fifo;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool is_other() const { return _VSTD_FS::is_other(file_status{__get_ft()}); }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool is_other(error_code& __ec) const noexcept {
-    return _VSTD_FS::is_other(file_status{__get_ft(&__ec)});
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool is_regular_file() const { return __get_ft() == file_type::regular; }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool is_regular_file(error_code& __ec) const noexcept {
-    return __get_ft(&__ec) == file_type::regular;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool is_socket() const { return __get_ft() == file_type::socket; }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool is_socket(error_code& __ec) const noexcept {
-    return __get_ft(&__ec) == file_type::socket;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool is_symlink() const { return __get_sym_ft() == file_type::symlink; }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool is_symlink(error_code& __ec) const noexcept {
-    return __get_sym_ft(&__ec) == file_type::symlink;
-  }
-  _LIBCPP_INLINE_VISIBILITY
-  uintmax_t file_size() const { return __get_size(); }
-
-  _LIBCPP_INLINE_VISIBILITY
-  uintmax_t file_size(error_code& __ec) const noexcept {
-    return __get_size(&__ec);
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  uintmax_t hard_link_count() const { return __get_nlink(); }
-
-  _LIBCPP_INLINE_VISIBILITY
-  uintmax_t hard_link_count(error_code& __ec) const noexcept {
-    return __get_nlink(&__ec);
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  file_time_type last_write_time() const { return __get_write_time(); }
-
-  _LIBCPP_INLINE_VISIBILITY
-  file_time_type last_write_time(error_code& __ec) const noexcept {
-    return __get_write_time(&__ec);
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  file_status status() const { return __get_status(); }
-
-  _LIBCPP_INLINE_VISIBILITY
-  file_status status(error_code& __ec) const noexcept {
-    return __get_status(&__ec);
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  file_status symlink_status() const { return __get_symlink_status(); }
-
-  _LIBCPP_INLINE_VISIBILITY
-  file_status symlink_status(error_code& __ec) const noexcept {
-    return __get_symlink_status(&__ec);
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool operator<(directory_entry const& __rhs) const noexcept {
-    return __p_ < __rhs.__p_;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool operator==(directory_entry const& __rhs) const noexcept {
-    return __p_ == __rhs.__p_;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool operator!=(directory_entry const& __rhs) const noexcept {
-    return __p_ != __rhs.__p_;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool operator<=(directory_entry const& __rhs) const noexcept {
-    return __p_ <= __rhs.__p_;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool operator>(directory_entry const& __rhs) const noexcept {
-    return __p_ > __rhs.__p_;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool operator>=(directory_entry const& __rhs) const noexcept {
-    return __p_ >= __rhs.__p_;
-  }
-
-private:
-  friend class directory_iterator;
-  friend class recursive_directory_iterator;
-  friend class __dir_stream;
-
-  enum _CacheType : unsigned char {
-    _Empty,
-    _IterSymlink,
-    _IterNonSymlink,
-    _RefreshSymlink,
-    _RefreshSymlinkUnresolved,
-    _RefreshNonSymlink
-  };
-
-  struct __cached_data {
-    uintmax_t __size_;
-    uintmax_t __nlink_;
-    file_time_type __write_time_;
-    perms __sym_perms_;
-    perms __non_sym_perms_;
-    file_type __type_;
-    _CacheType __cache_type_;
-
-    _LIBCPP_INLINE_VISIBILITY
-    __cached_data() noexcept { __reset(); }
-
-    _LIBCPP_INLINE_VISIBILITY
-    void __reset() {
-      __cache_type_ = _Empty;
-      __type_ = file_type::none;
-      __sym_perms_ = __non_sym_perms_ = perms::unknown;
-      __size_ = __nlink_ = uintmax_t(-1);
-      __write_time_ = file_time_type::min();
-    }
-  };
-
-  _LIBCPP_INLINE_VISIBILITY
-  static __cached_data __create_iter_result(file_type __ft) {
-    __cached_data __data;
-    __data.__type_ = __ft;
-    __data.__cache_type_ = [&]() {
-      switch (__ft) {
-      case file_type::none:
-        return _Empty;
-      case file_type::symlink:
-        return _IterSymlink;
-      default:
-        return _IterNonSymlink;
-      }
-    }();
-    return __data;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  void __assign_iter_entry(_Path&& __p, __cached_data __dt) {
-    __p_ = std::move(__p);
-    __data_ = __dt;
-  }
-
-  _LIBCPP_FUNC_VIS
-  error_code __do_refresh() noexcept;
-
-  _LIBCPP_INLINE_VISIBILITY
-  static bool __is_dne_error(error_code const& __ec) {
-    if (!__ec)
-      return true;
-    switch (static_cast<errc>(__ec.value())) {
-    case errc::no_such_file_or_directory:
-    case errc::not_a_directory:
-      return true;
-    default:
-      return false;
-    }
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  void __handle_error(const char* __msg, error_code* __dest_ec,
-                      error_code const& __ec, bool __allow_dne = false) const {
-    if (__dest_ec) {
-      *__dest_ec = __ec;
-      return;
-    }
-    if (__ec && (!__allow_dne || !__is_dne_error(__ec)))
-      __throw_filesystem_error(__msg, __p_, __ec);
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  void __refresh(error_code* __ec = nullptr) {
-    __handle_error("in directory_entry::refresh", __ec, __do_refresh(),
-                   /*allow_dne*/ true);
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  file_type __get_sym_ft(error_code* __ec = nullptr) const {
-    switch (__data_.__cache_type_) {
-    case _Empty:
-      return __symlink_status(__p_, __ec).type();
-    case _IterSymlink:
-    case _RefreshSymlink:
-    case _RefreshSymlinkUnresolved:
-      if (__ec)
-        __ec->clear();
-      return file_type::symlink;
-    case _IterNonSymlink:
-    case _RefreshNonSymlink:
-      file_status __st(__data_.__type_);
-      if (__ec && !_VSTD_FS::exists(__st))
-        *__ec = make_error_code(errc::no_such_file_or_directory);
-      else if (__ec)
-        __ec->clear();
-      return __data_.__type_;
-    }
-    _LIBCPP_UNREACHABLE();
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  file_type __get_ft(error_code* __ec = nullptr) const {
-    switch (__data_.__cache_type_) {
-    case _Empty:
-    case _IterSymlink:
-    case _RefreshSymlinkUnresolved:
-      return __status(__p_, __ec).type();
-    case _IterNonSymlink:
-    case _RefreshNonSymlink:
-    case _RefreshSymlink: {
-      file_status __st(__data_.__type_);
-      if (__ec && !_VSTD_FS::exists(__st))
-        *__ec = make_error_code(errc::no_such_file_or_directory);
-      else if (__ec)
-        __ec->clear();
-      return __data_.__type_;
-    }
-    }
-    _LIBCPP_UNREACHABLE();
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  file_status __get_status(error_code* __ec = nullptr) const {
-    switch (__data_.__cache_type_) {
-    case _Empty:
-    case _IterNonSymlink:
-    case _IterSymlink:
-    case _RefreshSymlinkUnresolved:
-      return __status(__p_, __ec);
-    case _RefreshNonSymlink:
-    case _RefreshSymlink:
-      return file_status(__get_ft(__ec), __data_.__non_sym_perms_);
-    }
-    _LIBCPP_UNREACHABLE();
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  file_status __get_symlink_status(error_code* __ec = nullptr) const {
-    switch (__data_.__cache_type_) {
-    case _Empty:
-    case _IterNonSymlink:
-    case _IterSymlink:
-      return __symlink_status(__p_, __ec);
-    case _RefreshNonSymlink:
-      return file_status(__get_sym_ft(__ec), __data_.__non_sym_perms_);
-    case _RefreshSymlink:
-    case _RefreshSymlinkUnresolved:
-      return file_status(__get_sym_ft(__ec), __data_.__sym_perms_);
-    }
-    _LIBCPP_UNREACHABLE();
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  uintmax_t __get_size(error_code* __ec = nullptr) const {
-    switch (__data_.__cache_type_) {
-    case _Empty:
-    case _IterNonSymlink:
-    case _IterSymlink:
-    case _RefreshSymlinkUnresolved:
-      return _VSTD_FS::__file_size(__p_, __ec);
-    case _RefreshSymlink:
-    case _RefreshNonSymlink: {
-      error_code __m_ec;
-      file_status __st(__get_ft(&__m_ec));
-      __handle_error("in directory_entry::file_size", __ec, __m_ec);
-      if (_VSTD_FS::exists(__st) && !_VSTD_FS::is_regular_file(__st)) {
-        errc __err_kind = _VSTD_FS::is_directory(__st) ? errc::is_a_directory
-                                                       : errc::not_supported;
-        __handle_error("in directory_entry::file_size", __ec,
-                       make_error_code(__err_kind));
-      }
-      return __data_.__size_;
-    }
-    }
-    _LIBCPP_UNREACHABLE();
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  uintmax_t __get_nlink(error_code* __ec = nullptr) const {
-    switch (__data_.__cache_type_) {
-    case _Empty:
-    case _IterNonSymlink:
-    case _IterSymlink:
-    case _RefreshSymlinkUnresolved:
-      return _VSTD_FS::__hard_link_count(__p_, __ec);
-    case _RefreshSymlink:
-    case _RefreshNonSymlink: {
-      error_code __m_ec;
-      (void)__get_ft(&__m_ec);
-      __handle_error("in directory_entry::hard_link_count", __ec, __m_ec);
-      return __data_.__nlink_;
-    }
-    }
-    _LIBCPP_UNREACHABLE();
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  file_time_type __get_write_time(error_code* __ec = nullptr) const {
-    switch (__data_.__cache_type_) {
-    case _Empty:
-    case _IterNonSymlink:
-    case _IterSymlink:
-    case _RefreshSymlinkUnresolved:
-      return _VSTD_FS::__last_write_time(__p_, __ec);
-    case _RefreshSymlink:
-    case _RefreshNonSymlink: {
-      error_code __m_ec;
-      file_status __st(__get_ft(&__m_ec));
-      __handle_error("in directory_entry::last_write_time", __ec, __m_ec);
-      if (_VSTD_FS::exists(__st) &&
-          __data_.__write_time_ == file_time_type::min())
-        __handle_error("in directory_entry::last_write_time", __ec,
-                       make_error_code(errc::value_too_large));
-      return __data_.__write_time_;
-    }
-    }
-    _LIBCPP_UNREACHABLE();
-  }
-
-private:
-  _Path __p_;
-  __cached_data __data_;
-};
-
-class __dir_element_proxy {
-public:
-  inline _LIBCPP_INLINE_VISIBILITY directory_entry operator*() {
-    return _VSTD::move(__elem_);
-  }
-
-private:
-  friend class directory_iterator;
-  friend class recursive_directory_iterator;
-  explicit __dir_element_proxy(directory_entry const& __e) : __elem_(__e) {}
-  __dir_element_proxy(__dir_element_proxy&& __o)
-      : __elem_(_VSTD::move(__o.__elem_)) {}
-  directory_entry __elem_;
-};
-
-class directory_iterator {
-public:
-  typedef directory_entry value_type;
-  typedef ptrdiff_t difference_type;
-  typedef value_type const* pointer;
-  typedef value_type const& reference;
-  typedef input_iterator_tag iterator_category;
-
-public:
-  //ctor & dtor
-  directory_iterator() noexcept {}
-
-  explicit directory_iterator(const path& __p)
-      : directory_iterator(__p, nullptr) {}
-
-  directory_iterator(const path& __p, directory_options __opts)
-      : directory_iterator(__p, nullptr, __opts) {}
-
-  directory_iterator(const path& __p, error_code& __ec)
-      : directory_iterator(__p, &__ec) {}
-
-  directory_iterator(const path& __p, directory_options __opts,
-                     error_code& __ec)
-      : directory_iterator(__p, &__ec, __opts) {}
-
-  directory_iterator(const directory_iterator&) = default;
-  directory_iterator(directory_iterator&&) = default;
-  directory_iterator& operator=(const directory_iterator&) = default;
-
-  directory_iterator& operator=(directory_iterator&& __o) noexcept {
-    // non-default implementation provided to support self-move assign.
-    if (this != &__o) {
-      __imp_ = _VSTD::move(__o.__imp_);
-    }
-    return *this;
-  }
-
-  ~directory_iterator() = default;
-
-  const directory_entry& operator*() const {
-    _LIBCPP_ASSERT(__imp_, "The end iterator cannot be dereferenced");
-    return __dereference();
-  }
-
-  const directory_entry* operator->() const { return &**this; }
-
-  directory_iterator& operator++() { return __increment(); }
-
-  __dir_element_proxy operator++(int) {
-    __dir_element_proxy __p(**this);
-    __increment();
-    return __p;
-  }
-
-  directory_iterator& increment(error_code& __ec) { return __increment(&__ec); }
-
-private:
-  inline _LIBCPP_INLINE_VISIBILITY friend bool
-  operator==(const directory_iterator& __lhs,
-             const directory_iterator& __rhs) noexcept;
-
-  // construct the dir_stream
-  _LIBCPP_FUNC_VIS
-  directory_iterator(const path&, error_code*,
-                     directory_options = directory_options::none);
-
-  _LIBCPP_FUNC_VIS
-  directory_iterator& __increment(error_code* __ec = nullptr);
-
-  _LIBCPP_FUNC_VIS
-  const directory_entry& __dereference() const;
-
-private:
-  shared_ptr<__dir_stream> __imp_;
-};
-
-inline _LIBCPP_INLINE_VISIBILITY bool
-operator==(const directory_iterator& __lhs,
-           const directory_iterator& __rhs) noexcept {
-  return __lhs.__imp_ == __rhs.__imp_;
-}
-
-inline _LIBCPP_INLINE_VISIBILITY bool
-operator!=(const directory_iterator& __lhs,
-           const directory_iterator& __rhs) noexcept {
-  return !(__lhs == __rhs);
-}
-
-// enable directory_iterator range-based for statements
-inline _LIBCPP_INLINE_VISIBILITY directory_iterator
-begin(directory_iterator __iter) noexcept {
-  return __iter;
-}
-
-inline _LIBCPP_INLINE_VISIBILITY directory_iterator
-end(const directory_iterator&) noexcept {
-  return directory_iterator();
-}
-
-class recursive_directory_iterator {
-public:
-  using value_type = directory_entry;
-  using difference_type = std::ptrdiff_t;
-  using pointer = directory_entry const*;
-  using reference = directory_entry const&;
-  using iterator_category = std::input_iterator_tag;
-
-public:
-  // constructors and destructor
-  _LIBCPP_INLINE_VISIBILITY
-  recursive_directory_iterator() noexcept : __rec_(false) {}
-
-  _LIBCPP_INLINE_VISIBILITY
-  explicit recursive_directory_iterator(
-      const path& __p, directory_options __xoptions = directory_options::none)
-      : recursive_directory_iterator(__p, __xoptions, nullptr) {}
-
-  _LIBCPP_INLINE_VISIBILITY
-  recursive_directory_iterator(const path& __p, directory_options __xoptions,
-                               error_code& __ec)
-      : recursive_directory_iterator(__p, __xoptions, &__ec) {}
-
-  _LIBCPP_INLINE_VISIBILITY
-  recursive_directory_iterator(const path& __p, error_code& __ec)
-      : recursive_directory_iterator(__p, directory_options::none, &__ec) {}
-
-  recursive_directory_iterator(const recursive_directory_iterator&) = default;
-  recursive_directory_iterator(recursive_directory_iterator&&) = default;
-
-  recursive_directory_iterator&
-  operator=(const recursive_directory_iterator&) = default;
-
-  _LIBCPP_INLINE_VISIBILITY
-  recursive_directory_iterator&
-  operator=(recursive_directory_iterator&& __o) noexcept {
-    // non-default implementation provided to support self-move assign.
-    if (this != &__o) {
-      __imp_ = _VSTD::move(__o.__imp_);
-      __rec_ = __o.__rec_;
-    }
-    return *this;
-  }
-
-  ~recursive_directory_iterator() = default;
-
-  _LIBCPP_INLINE_VISIBILITY
-  const directory_entry& operator*() const { return __dereference(); }
-
-  _LIBCPP_INLINE_VISIBILITY
-  const directory_entry* operator->() const { return &__dereference(); }
-
-  recursive_directory_iterator& operator++() { return __increment(); }
-
-  _LIBCPP_INLINE_VISIBILITY
-  __dir_element_proxy operator++(int) {
-    __dir_element_proxy __p(**this);
-    __increment();
-    return __p;
-  }
-
-  _LIBCPP_INLINE_VISIBILITY
-  recursive_directory_iterator& increment(error_code& __ec) {
-    return __increment(&__ec);
-  }
-
-  _LIBCPP_FUNC_VIS directory_options options() const;
-  _LIBCPP_FUNC_VIS int depth() const;
-
-  _LIBCPP_INLINE_VISIBILITY
-  void pop() { __pop(); }
-
-  _LIBCPP_INLINE_VISIBILITY
-  void pop(error_code& __ec) { __pop(&__ec); }
-
-  _LIBCPP_INLINE_VISIBILITY
-  bool recursion_pending() const { return __rec_; }
-
-  _LIBCPP_INLINE_VISIBILITY
-  void disable_recursion_pending() { __rec_ = false; }
-
-private:
-  recursive_directory_iterator(const path& __p, directory_options __opt,
-                               error_code* __ec);
-
-  _LIBCPP_FUNC_VIS
-  const directory_entry& __dereference() const;
-
-  _LIBCPP_FUNC_VIS
-  bool __try_recursion(error_code* __ec);
-
-  _LIBCPP_FUNC_VIS
-  void __advance(error_code* __ec = nullptr);
-
-  _LIBCPP_FUNC_VIS
-  recursive_directory_iterator& __increment(error_code* __ec = nullptr);
-
-  _LIBCPP_FUNC_VIS
-  void __pop(error_code* __ec = nullptr);
-
-  inline _LIBCPP_INLINE_VISIBILITY friend bool
-  operator==(const recursive_directory_iterator&,
-             const recursive_directory_iterator&) noexcept;
-
-  struct __shared_imp;
-  shared_ptr<__shared_imp> __imp_;
-  bool __rec_;
-}; // class recursive_directory_iterator
-
-inline _LIBCPP_INLINE_VISIBILITY bool
-operator==(const recursive_directory_iterator& __lhs,
-           const recursive_directory_iterator& __rhs) noexcept {
-  return __lhs.__imp_ == __rhs.__imp_;
-}
-
-_LIBCPP_INLINE_VISIBILITY
-inline bool operator!=(const recursive_directory_iterator& __lhs,
-                       const recursive_directory_iterator& __rhs) noexcept {
-  return !(__lhs == __rhs);
-}
-// enable recursive_directory_iterator range-based for statements
-inline _LIBCPP_INLINE_VISIBILITY recursive_directory_iterator
-begin(recursive_directory_iterator __iter) noexcept {
-  return __iter;
-}
-
-inline _LIBCPP_INLINE_VISIBILITY recursive_directory_iterator
-end(const recursive_directory_iterator&) noexcept {
-  return recursive_directory_iterator();
-}
-
-}  // namespace android::hardware::automotive::filesystem
-#ifdef _LIBAUTO_UNDEF_VSTD
-#undef _VSTD
-#undef _LIBAUTO_UNDEF_VSTD
-#endif
-
-#ifndef _LIBAUTO_UNDEF_VSTD_FS
-#pragma pop_macro("_VSTD_FS")
-#else
-#undef _VSTD
-#undef _LIBAUTO_UNDEF_VSTD_FS
-#endif
-
-#endif // !_LIBCPP_CXX03_LANG
-
-_LIBCPP_POP_MACROS
-
-#endif  // defined(_LIBCPP_VERSION) && _LIBCPP_VERSION > 8000
-
-#endif // _LIBAUTO_FILESYSTEM
diff --git a/automotive/can/1.0/default/libc++fs/src/filesystem/directory_iterator.cpp b/automotive/can/1.0/default/libc++fs/src/filesystem/directory_iterator.cpp
deleted file mode 100644
index 0dbf492..0000000
--- a/automotive/can/1.0/default/libc++fs/src/filesystem/directory_iterator.cpp
+++ /dev/null
@@ -1,405 +0,0 @@
-//===------------------ directory_iterator.cpp ----------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-// TODO(152067309): Remove this once the libc++ upgrade is complete.
-#include <__config>
-#if defined(_LIBCPP_VERSION) && _LIBCPP_VERSION <= 8000
-
-/* clang-format off */
-#include "automotive/filesystem"
-#include <__config>
-
-#if defined(_LIBCPP_WIN32API)
-#define WIN32_LEAN_AND_MEAN
-#include <Windows.h>
-#else
-#include <dirent.h>
-#endif
-#include <errno.h>
-
-#include "filesystem_common.h"
-
-namespace android::hardware::automotive::filesystem {
-
-namespace detail {
-namespace {
-
-#if !defined(_LIBCPP_WIN32API)
-template <class DirEntT, class = decltype(DirEntT::d_type)>
-static file_type get_file_type(DirEntT* ent, int) {
-  switch (ent->d_type) {
-  case DT_BLK:
-    return file_type::block;
-  case DT_CHR:
-    return file_type::character;
-  case DT_DIR:
-    return file_type::directory;
-  case DT_FIFO:
-    return file_type::fifo;
-  case DT_LNK:
-    return file_type::symlink;
-  case DT_REG:
-    return file_type::regular;
-  case DT_SOCK:
-    return file_type::socket;
-  // Unlike in lstat, hitting "unknown" here simply means that the underlying
-  // filesystem doesn't support d_type. Report is as 'none' so we correctly
-  // set the cache to empty.
-  case DT_UNKNOWN:
-    break;
-  }
-  return file_type::none;
-}
-
-template <class DirEntT>
-static file_type get_file_type(DirEntT* ent, long) {
-  return file_type::none;
-}
-
-static pair<string_view, file_type> posix_readdir(DIR* dir_stream,
-                                                  error_code& ec) {
-  struct dirent* dir_entry_ptr = nullptr;
-  errno = 0; // zero errno in order to detect errors
-  ec.clear();
-  if ((dir_entry_ptr = ::readdir(dir_stream)) == nullptr) {
-    if (errno)
-      ec = capture_errno();
-    return {};
-  } else {
-    return {dir_entry_ptr->d_name, get_file_type(dir_entry_ptr, 0)};
-  }
-}
-#else
-
-static file_type get_file_type(const WIN32_FIND_DATA& data) {
-  //auto attrs = data.dwFileAttributes;
-  // FIXME(EricWF)
-  return file_type::unknown;
-}
-static uintmax_t get_file_size(const WIN32_FIND_DATA& data) {
-  return (data.nFileSizeHight * (MAXDWORD + 1)) + data.nFileSizeLow;
-}
-static file_time_type get_write_time(const WIN32_FIND_DATA& data) {
-  ULARGE_INTEGER tmp;
-  FILETIME& time = data.ftLastWriteTime;
-  tmp.u.LowPart = time.dwLowDateTime;
-  tmp.u.HighPart = time.dwHighDateTime;
-  return file_time_type(file_time_type::duration(time.QuadPart));
-}
-
-#endif
-
-} // namespace
-} // namespace detail
-
-using detail::ErrorHandler;
-
-#if defined(_LIBCPP_WIN32API)
-class __dir_stream {
-public:
-  __dir_stream() = delete;
-  __dir_stream& operator=(const __dir_stream&) = delete;
-
-  __dir_stream(__dir_stream&& __ds) noexcept : __stream_(__ds.__stream_),
-                                               __root_(move(__ds.__root_)),
-                                               __entry_(move(__ds.__entry_)) {
-    __ds.__stream_ = INVALID_HANDLE_VALUE;
-  }
-
-  __dir_stream(const path& root, directory_options opts, error_code& ec)
-      : __stream_(INVALID_HANDLE_VALUE), __root_(root) {
-    __stream_ = ::FindFirstFileEx(root.c_str(), &__data_);
-    if (__stream_ == INVALID_HANDLE_VALUE) {
-      ec = error_code(::GetLastError(), generic_category());
-      const bool ignore_permission_denied =
-          bool(opts & directory_options::skip_permission_denied);
-      if (ignore_permission_denied && ec.value() == ERROR_ACCESS_DENIED)
-        ec.clear();
-      return;
-    }
-  }
-
-  ~__dir_stream() noexcept {
-    if (__stream_ == INVALID_HANDLE_VALUE)
-      return;
-    close();
-  }
-
-  bool good() const noexcept { return __stream_ != INVALID_HANDLE_VALUE; }
-
-  bool advance(error_code& ec) {
-    while (::FindNextFile(__stream_, &__data_)) {
-      if (!strcmp(__data_.cFileName, ".") || strcmp(__data_.cFileName, ".."))
-        continue;
-      // FIXME: Cache more of this
-      //directory_entry::__cached_data cdata;
-      //cdata.__type_ = get_file_type(__data_);
-      //cdata.__size_ = get_file_size(__data_);
-      //cdata.__write_time_ = get_write_time(__data_);
-      __entry_.__assign_iter_entry(
-          __root_ / __data_.cFileName,
-          directory_entry::__create_iter_result(get_file_type(__data)));
-      return true;
-    }
-    ec = error_code(::GetLastError(), generic_category());
-    close();
-    return false;
-  }
-
-private:
-  error_code close() noexcept {
-    error_code ec;
-    if (!::FindClose(__stream_))
-      ec = error_code(::GetLastError(), generic_category());
-    __stream_ = INVALID_HANDLE_VALUE;
-    return ec;
-  }
-
-  HANDLE __stream_{INVALID_HANDLE_VALUE};
-  WIN32_FIND_DATA __data_;
-
-public:
-  path __root_;
-  directory_entry __entry_;
-};
-#else
-class __dir_stream {
-public:
-  __dir_stream() = delete;
-  __dir_stream& operator=(const __dir_stream&) = delete;
-
-  __dir_stream(__dir_stream&& other) noexcept : __stream_(other.__stream_),
-                                                __root_(std::move(other.__root_)),
-                                                __entry_(std::move(other.__entry_)) {
-    other.__stream_ = nullptr;
-  }
-
-  __dir_stream(const path& root, directory_options opts, error_code& ec)
-      : __stream_(nullptr), __root_(root) {
-    if ((__stream_ = ::opendir(root.c_str())) == nullptr) {
-      ec = detail::capture_errno();
-      const bool allow_eacess =
-          bool(opts & directory_options::skip_permission_denied);
-      if (allow_eacess && ec.value() == EACCES)
-        ec.clear();
-      return;
-    }
-    advance(ec);
-  }
-
-  ~__dir_stream() noexcept {
-    if (__stream_)
-      close();
-  }
-
-  bool good() const noexcept { return __stream_ != nullptr; }
-
-  bool advance(error_code& ec) {
-    while (true) {
-      auto str_type_pair = detail::posix_readdir(__stream_, ec);
-      auto& str = str_type_pair.first;
-      if (str == "." || str == "..") {
-        continue;
-      } else if (ec || str.empty()) {
-        close();
-        return false;
-      } else {
-        __entry_.__assign_iter_entry(
-            __root_ / str,
-            directory_entry::__create_iter_result(str_type_pair.second));
-        return true;
-      }
-    }
-  }
-
-private:
-  error_code close() noexcept {
-    error_code m_ec;
-    if (::closedir(__stream_) == -1)
-      m_ec = detail::capture_errno();
-    __stream_ = nullptr;
-    return m_ec;
-  }
-
-  DIR* __stream_{nullptr};
-
-public:
-  path __root_;
-  directory_entry __entry_;
-};
-#endif
-
-// directory_iterator
-
-directory_iterator::directory_iterator(const path& p, error_code* ec,
-                                       directory_options opts) {
-  ErrorHandler<void> err("directory_iterator::directory_iterator(...)", ec, &p);
-
-  error_code m_ec;
-  __imp_ = make_shared<__dir_stream>(p, opts, m_ec);
-  if (ec)
-    *ec = m_ec;
-  if (!__imp_->good()) {
-    __imp_.reset();
-    if (m_ec)
-      err.report(m_ec);
-  }
-}
-
-directory_iterator& directory_iterator::__increment(error_code* ec) {
-  _LIBCPP_ASSERT(__imp_, "Attempting to increment an invalid iterator");
-  ErrorHandler<void> err("directory_iterator::operator++()", ec);
-
-  error_code m_ec;
-  if (!__imp_->advance(m_ec)) {
-    path root = std::move(__imp_->__root_);
-    __imp_.reset();
-    if (m_ec)
-      err.report(m_ec, "at root \"%s\"", root);
-  }
-  return *this;
-}
-
-directory_entry const& directory_iterator::__dereference() const {
-  _LIBCPP_ASSERT(__imp_, "Attempting to dereference an invalid iterator");
-  return __imp_->__entry_;
-}
-
-// recursive_directory_iterator
-
-struct recursive_directory_iterator::__shared_imp {
-  stack<__dir_stream> __stack_;
-  directory_options __options_;
-};
-
-recursive_directory_iterator::recursive_directory_iterator(
-    const path& p, directory_options opt, error_code* ec)
-    : __imp_(nullptr), __rec_(true) {
-  ErrorHandler<void> err("recursive_directory_iterator", ec, &p);
-
-  error_code m_ec;
-  __dir_stream new_s(p, opt, m_ec);
-  if (m_ec)
-    err.report(m_ec);
-  if (m_ec || !new_s.good())
-    return;
-
-  __imp_ = make_shared<__shared_imp>();
-  __imp_->__options_ = opt;
-  __imp_->__stack_.push(std::move(new_s));
-}
-
-void recursive_directory_iterator::__pop(error_code* ec) {
-  _LIBCPP_ASSERT(__imp_, "Popping the end iterator");
-  if (ec)
-    ec->clear();
-  __imp_->__stack_.pop();
-  if (__imp_->__stack_.size() == 0)
-    __imp_.reset();
-  else
-    __advance(ec);
-}
-
-directory_options recursive_directory_iterator::options() const {
-  return __imp_->__options_;
-}
-
-int recursive_directory_iterator::depth() const {
-  return __imp_->__stack_.size() - 1;
-}
-
-const directory_entry& recursive_directory_iterator::__dereference() const {
-  return __imp_->__stack_.top().__entry_;
-}
-
-recursive_directory_iterator&
-recursive_directory_iterator::__increment(error_code* ec) {
-  if (ec)
-    ec->clear();
-  if (recursion_pending()) {
-    if (__try_recursion(ec) || (ec && *ec))
-      return *this;
-  }
-  __rec_ = true;
-  __advance(ec);
-  return *this;
-}
-
-void recursive_directory_iterator::__advance(error_code* ec) {
-  ErrorHandler<void> err("recursive_directory_iterator::operator++()", ec);
-
-  const directory_iterator end_it;
-  auto& stack = __imp_->__stack_;
-  error_code m_ec;
-  while (stack.size() > 0) {
-    if (stack.top().advance(m_ec))
-      return;
-    if (m_ec)
-      break;
-    stack.pop();
-  }
-
-  if (m_ec) {
-    path root = std::move(stack.top().__root_);
-    __imp_.reset();
-    err.report(m_ec, "at root \"%s\"", root);
-  } else {
-    __imp_.reset();
-  }
-}
-
-bool recursive_directory_iterator::__try_recursion(error_code* ec) {
-  ErrorHandler<void> err("recursive_directory_iterator::operator++()", ec);
-
-  bool rec_sym = bool(options() & directory_options::follow_directory_symlink);
-
-  auto& curr_it = __imp_->__stack_.top();
-
-  bool skip_rec = false;
-  error_code m_ec;
-  if (!rec_sym) {
-    file_status st(curr_it.__entry_.__get_sym_ft(&m_ec));
-    if (m_ec && status_known(st))
-      m_ec.clear();
-    if (m_ec || is_symlink(st) || !is_directory(st))
-      skip_rec = true;
-  } else {
-    file_status st(curr_it.__entry_.__get_ft(&m_ec));
-    if (m_ec && status_known(st))
-      m_ec.clear();
-    if (m_ec || !is_directory(st))
-      skip_rec = true;
-  }
-
-  if (!skip_rec) {
-    __dir_stream new_it(curr_it.__entry_.path(), __imp_->__options_, m_ec);
-    if (new_it.good()) {
-      __imp_->__stack_.push(std::move(new_it));
-      return true;
-    }
-  }
-  if (m_ec) {
-    const bool allow_eacess =
-        bool(__imp_->__options_ & directory_options::skip_permission_denied);
-    if (m_ec.value() == EACCES && allow_eacess) {
-      if (ec)
-        ec->clear();
-    } else {
-      path at_ent = std::move(curr_it.__entry_.__p_);
-      __imp_.reset();
-      err.report(m_ec, "attempting recursion into \"%s\"", at_ent);
-    }
-  }
-  return false;
-}
-
-}  // namespace android::hardware::automotive::filesystem
-/* clang-format on */
-
-#endif // defined(_LIBCPP_VERSION) && _LIBCPP_VERSION <= 8000
diff --git a/automotive/can/1.0/default/libc++fs/src/filesystem/filesystem_common.h b/automotive/can/1.0/default/libc++fs/src/filesystem/filesystem_common.h
deleted file mode 100644
index 4f44661..0000000
--- a/automotive/can/1.0/default/libc++fs/src/filesystem/filesystem_common.h
+++ /dev/null
@@ -1,441 +0,0 @@
-//===----------------------------------------------------------------------===////
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===////
-/* clang-format off */
-#ifndef AUTO_FILESYSTEM_COMMON_H
-#define AUTO_FILESYSTEM_COMMON_H
-
-#include "automotive/filesystem"
-#include <array>
-#include <chrono>
-#include <cstdlib>
-#include <climits>
-
-#include <unistd.h>
-#include <sys/stat.h>
-#include <sys/statvfs.h>
-#include <sys/time.h> // for ::utimes as used in __last_write_time
-#include <fcntl.h>    /* values for fchmodat */
-
-#if !defined(__APPLE__)
-// We can use the presence of UTIME_OMIT to detect platforms that provide
-// utimensat.
-#if defined(UTIME_OMIT)
-#define _LIBCPP_USE_UTIMENSAT
-#endif
-#endif
-
-#if defined(__GNUC__)
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-function"
-#endif
-
-namespace android::hardware::automotive::filesystem {
-using namespace std::chrono;
-
-using std::error_code;
-using std::is_floating_point;
-using std::micro;
-using std::nano;
-using std::ratio;
-
-namespace detail {
-namespace {
-
-static string format_string_imp(const char* msg, ...) {
-  // we might need a second shot at this, so pre-emptivly make a copy
-  struct GuardVAList {
-    va_list& target;
-    bool active = true;
-    GuardVAList(va_list& target) : target(target), active(true) {}
-    void clear() {
-      if (active)
-        va_end(target);
-      active = false;
-    }
-    ~GuardVAList() {
-      if (active)
-        va_end(target);
-    }
-  };
-  va_list args;
-  va_start(args, msg);
-  GuardVAList args_guard(args);
-
-  va_list args_cp;
-  va_copy(args_cp, args);
-  GuardVAList args_copy_guard(args_cp);
-
-  std::string result;
-
-  array<char, 256> local_buff;
-  size_t size_with_null = local_buff.size();
-  auto ret = ::vsnprintf(local_buff.data(), size_with_null, msg, args_cp);
-
-  args_copy_guard.clear();
-
-  // handle empty expansion
-  if (ret == 0)
-    return result;
-  if (static_cast<size_t>(ret) < size_with_null) {
-    result.assign(local_buff.data(), static_cast<size_t>(ret));
-    return result;
-  }
-
-  // we did not provide a long enough buffer on our first attempt. The
-  // return value is the number of bytes (excluding the null byte) that are
-  // needed for formatting.
-  size_with_null = static_cast<size_t>(ret) + 1;
-  result.__resize_default_init(size_with_null - 1);
-  ret = ::vsnprintf(&result[0], size_with_null, msg, args);
-  _LIBCPP_ASSERT(static_cast<size_t>(ret) == (size_with_null - 1), "TODO");
-
-  return result;
-}
-
-const char* unwrap(string const& s) { return s.c_str(); }
-const char* unwrap(path const& p) { return p.native().c_str(); }
-template <class Arg>
-Arg const& unwrap(Arg const& a) {
-  static_assert(!is_class<Arg>::value, "cannot pass class here");
-  return a;
-}
-
-template <class... Args>
-string format_string(const char* fmt, Args const&... args) {
-  return format_string_imp(fmt, unwrap(args)...);
-}
-
-error_code capture_errno() {
-  _LIBCPP_ASSERT(errno, "Expected errno to be non-zero");
-  return error_code(errno, generic_category());
-}
-
-template <class T>
-T error_value();
-template <>
-_LIBCPP_CONSTEXPR_AFTER_CXX11 void error_value<void>() {}
-template <>
-bool error_value<bool>() {
-  return false;
-}
-template <>
-uintmax_t error_value<uintmax_t>() {
-  return uintmax_t(-1);
-}
-template <>
-_LIBCPP_CONSTEXPR_AFTER_CXX11 file_time_type error_value<file_time_type>() {
-  return file_time_type::min();
-}
-template <>
-path error_value<path>() {
-  return {};
-}
-
-template <class T>
-struct ErrorHandler {
-  const char* func_name;
-  error_code* ec = nullptr;
-  const path* p1 = nullptr;
-  const path* p2 = nullptr;
-
-  ErrorHandler(const char* fname, error_code* ec, const path* p1 = nullptr,
-               const path* p2 = nullptr)
-      : func_name(fname), ec(ec), p1(p1), p2(p2) {
-    if (ec)
-      ec->clear();
-  }
-
-  T report(const error_code& m_ec) const {
-    if (ec) {
-      *ec = m_ec;
-      return error_value<T>();
-    }
-    string what = string("in ") + func_name;
-    switch (bool(p1) + bool(p2)) {
-    case 0:
-      __throw_filesystem_error(what, m_ec);
-    case 1:
-      __throw_filesystem_error(what, *p1, m_ec);
-    case 2:
-      __throw_filesystem_error(what, *p1, *p2, m_ec);
-    }
-    _LIBCPP_UNREACHABLE();
-  }
-
-  template <class... Args>
-  T report(const error_code& m_ec, const char* msg, Args const&... args) const {
-    if (ec) {
-      *ec = m_ec;
-      return error_value<T>();
-    }
-    string what =
-        string("in ") + func_name + ": " + format_string(msg, args...);
-    switch (bool(p1) + bool(p2)) {
-    case 0:
-      __throw_filesystem_error(what, m_ec);
-    case 1:
-      __throw_filesystem_error(what, *p1, m_ec);
-    case 2:
-      __throw_filesystem_error(what, *p1, *p2, m_ec);
-    }
-    _LIBCPP_UNREACHABLE();
-  }
-
-  T report(errc const& err) const { return report(make_error_code(err)); }
-
-  template <class... Args>
-  T report(errc const& err, const char* msg, Args const&... args) const {
-    return report(make_error_code(err), msg, args...);
-  }
-
-private:
-  ErrorHandler(ErrorHandler const&) = delete;
-  ErrorHandler& operator=(ErrorHandler const&) = delete;
-};
-
-using chrono::duration;
-using chrono::duration_cast;
-
-using TimeSpec = struct ::timespec;
-using StatT = struct ::stat;
-
-template <class FileTimeT, class TimeT,
-          bool IsFloat = is_floating_point<typename FileTimeT::rep>::value>
-struct time_util_base {
-  using rep = typename FileTimeT::rep;
-  using fs_duration = typename FileTimeT::duration;
-  using fs_seconds = duration<rep>;
-  using fs_nanoseconds = duration<rep, nano>;
-  using fs_microseconds = duration<rep, micro>;
-
-  static constexpr rep max_seconds =
-      duration_cast<fs_seconds>(FileTimeT::duration::max()).count();
-
-  static constexpr rep max_nsec =
-      duration_cast<fs_nanoseconds>(FileTimeT::duration::max() -
-                                    fs_seconds(max_seconds))
-          .count();
-
-  static constexpr rep min_seconds =
-      duration_cast<fs_seconds>(FileTimeT::duration::min()).count();
-
-  static constexpr rep min_nsec_timespec =
-      duration_cast<fs_nanoseconds>(
-          (FileTimeT::duration::min() - fs_seconds(min_seconds)) +
-          fs_seconds(1))
-          .count();
-
-private:
-#if _LIBCPP_STD_VER > 11 && !defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR)
-  static constexpr fs_duration get_min_nsecs() {
-    return duration_cast<fs_duration>(
-        fs_nanoseconds(min_nsec_timespec) -
-        duration_cast<fs_nanoseconds>(fs_seconds(1)));
-  }
-  // Static assert that these values properly round trip.
-  static_assert(fs_seconds(min_seconds) + get_min_nsecs() ==
-                    FileTimeT::duration::min(),
-                "value doesn't roundtrip");
-
-  static constexpr bool check_range() {
-    // This kinda sucks, but it's what happens when we don't have __int128_t.
-    if (sizeof(TimeT) == sizeof(rep)) {
-      typedef duration<long long, ratio<3600 * 24 * 365> > Years;
-      return duration_cast<Years>(fs_seconds(max_seconds)) > Years(250) &&
-             duration_cast<Years>(fs_seconds(min_seconds)) < Years(-250);
-    }
-    return max_seconds >= numeric_limits<TimeT>::max() &&
-           min_seconds <= numeric_limits<TimeT>::min();
-  }
-  static_assert(check_range(), "the representable range is unacceptable small");
-#endif
-};
-
-template <class FileTimeT, class TimeT>
-struct time_util_base<FileTimeT, TimeT, true> {
-  using rep = typename FileTimeT::rep;
-  using fs_duration = typename FileTimeT::duration;
-  using fs_seconds = duration<rep>;
-  using fs_nanoseconds = duration<rep, nano>;
-  using fs_microseconds = duration<rep, micro>;
-
-  static const rep max_seconds;
-  static const rep max_nsec;
-  static const rep min_seconds;
-  static const rep min_nsec_timespec;
-};
-
-template <class FileTimeT, class TimeT>
-const typename FileTimeT::rep
-    time_util_base<FileTimeT, TimeT, true>::max_seconds =
-        duration_cast<fs_seconds>(FileTimeT::duration::max()).count();
-
-template <class FileTimeT, class TimeT>
-const typename FileTimeT::rep time_util_base<FileTimeT, TimeT, true>::max_nsec =
-    duration_cast<fs_nanoseconds>(FileTimeT::duration::max() -
-                                  fs_seconds(max_seconds))
-        .count();
-
-template <class FileTimeT, class TimeT>
-const typename FileTimeT::rep
-    time_util_base<FileTimeT, TimeT, true>::min_seconds =
-        duration_cast<fs_seconds>(FileTimeT::duration::min()).count();
-
-template <class FileTimeT, class TimeT>
-const typename FileTimeT::rep
-    time_util_base<FileTimeT, TimeT, true>::min_nsec_timespec =
-        duration_cast<fs_nanoseconds>((FileTimeT::duration::min() -
-                                       fs_seconds(min_seconds)) +
-                                      fs_seconds(1))
-            .count();
-
-template <class FileTimeT, class TimeT, class TimeSpecT>
-struct time_util : time_util_base<FileTimeT, TimeT> {
-  using Base = time_util_base<FileTimeT, TimeT>;
-  using Base::max_nsec;
-  using Base::max_seconds;
-  using Base::min_nsec_timespec;
-  using Base::min_seconds;
-
-  using typename Base::fs_duration;
-  using typename Base::fs_microseconds;
-  using typename Base::fs_nanoseconds;
-  using typename Base::fs_seconds;
-
-public:
-  template <class CType, class ChronoType>
-  static _LIBCPP_CONSTEXPR_AFTER_CXX11 bool checked_set(CType* out,
-                                                        ChronoType time) {
-    using Lim = numeric_limits<CType>;
-    if (time > Lim::max() || time < Lim::min())
-      return false;
-    *out = static_cast<CType>(time);
-    return true;
-  }
-
-  static _LIBCPP_CONSTEXPR_AFTER_CXX11 bool is_representable(TimeSpecT tm) {
-    if (tm.tv_sec >= 0) {
-      return tm.tv_sec < max_seconds ||
-             (tm.tv_sec == max_seconds && tm.tv_nsec <= max_nsec);
-    } else if (tm.tv_sec == (min_seconds - 1)) {
-      return tm.tv_nsec >= min_nsec_timespec;
-    } else {
-      return tm.tv_sec >= min_seconds;
-    }
-  }
-
-  static _LIBCPP_CONSTEXPR_AFTER_CXX11 bool is_representable(FileTimeT tm) {
-    auto secs = duration_cast<fs_seconds>(tm.time_since_epoch());
-    auto nsecs = duration_cast<fs_nanoseconds>(tm.time_since_epoch() - secs);
-    if (nsecs.count() < 0) {
-      secs = secs + fs_seconds(1);
-      nsecs = nsecs + fs_seconds(1);
-    }
-    using TLim = numeric_limits<TimeT>;
-    if (secs.count() >= 0)
-      return secs.count() <= TLim::max();
-    return secs.count() >= TLim::min();
-  }
-
-  static _LIBCPP_CONSTEXPR_AFTER_CXX11 FileTimeT
-  convert_from_timespec(TimeSpecT tm) {
-    if (tm.tv_sec >= 0 || tm.tv_nsec == 0) {
-      return FileTimeT(fs_seconds(tm.tv_sec) +
-                       duration_cast<fs_duration>(fs_nanoseconds(tm.tv_nsec)));
-    } else { // tm.tv_sec < 0
-      auto adj_subsec = duration_cast<fs_duration>(fs_seconds(1) -
-                                                   fs_nanoseconds(tm.tv_nsec));
-      auto Dur = fs_seconds(tm.tv_sec + 1) - adj_subsec;
-      return FileTimeT(Dur);
-    }
-  }
-
-  template <class SubSecT>
-  static _LIBCPP_CONSTEXPR_AFTER_CXX11 bool
-  set_times_checked(TimeT* sec_out, SubSecT* subsec_out, FileTimeT tp) {
-    auto dur = tp.time_since_epoch();
-    auto sec_dur = duration_cast<fs_seconds>(dur);
-    auto subsec_dur = duration_cast<fs_nanoseconds>(dur - sec_dur);
-    // The tv_nsec and tv_usec fields must not be negative so adjust accordingly
-    if (subsec_dur.count() < 0) {
-      if (sec_dur.count() > min_seconds) {
-        sec_dur = sec_dur - fs_seconds(1);
-        subsec_dur = subsec_dur + fs_seconds(1);
-      } else {
-        subsec_dur = fs_nanoseconds::zero();
-      }
-    }
-    return checked_set(sec_out, sec_dur.count()) &&
-           checked_set(subsec_out, subsec_dur.count());
-  }
-  static _LIBCPP_CONSTEXPR_AFTER_CXX11 bool convert_to_timespec(TimeSpecT& dest,
-                                                                FileTimeT tp) {
-    if (!is_representable(tp))
-      return false;
-    return set_times_checked(&dest.tv_sec, &dest.tv_nsec, tp);
-  }
-};
-
-using fs_time = time_util<file_time_type, time_t, TimeSpec>;
-
-#if defined(__APPLE__)
-TimeSpec extract_mtime(StatT const& st) { return st.st_mtimespec; }
-TimeSpec extract_atime(StatT const& st) { return st.st_atimespec; }
-#else
-TimeSpec extract_mtime(StatT const& st) { return st.st_mtim; }
-TimeSpec extract_atime(StatT const& st) { return st.st_atim; }
-#endif
-
-// allow the utimes implementation to compile even it we're not going
-// to use it.
-
-bool posix_utimes(const path& p, std::array<TimeSpec, 2> const& TS,
-                  error_code& ec) {
-  using namespace chrono;
-  auto Convert = [](long nsec) {
-    using int_type = decltype(std::declval< ::timeval>().tv_usec);
-    auto dur = duration_cast<microseconds>(nanoseconds(nsec)).count();
-    return static_cast<int_type>(dur);
-  };
-  struct ::timeval ConvertedTS[2] = {{TS[0].tv_sec, Convert(TS[0].tv_nsec)},
-                                     {TS[1].tv_sec, Convert(TS[1].tv_nsec)}};
-  if (::utimes(p.c_str(), ConvertedTS) == -1) {
-    ec = capture_errno();
-    return true;
-  }
-  return false;
-}
-
-#if defined(_LIBCPP_USE_UTIMENSAT)
-bool posix_utimensat(const path& p, std::array<TimeSpec, 2> const& TS,
-                     error_code& ec) {
-  if (::utimensat(AT_FDCWD, p.c_str(), TS.data(), 0) == -1) {
-    ec = capture_errno();
-    return true;
-  }
-  return false;
-}
-#endif
-
-bool set_file_times(const path& p, std::array<TimeSpec, 2> const& TS,
-                    error_code& ec) {
-#if !defined(_LIBCPP_USE_UTIMENSAT)
-  return posix_utimes(p, TS, ec);
-#else
-  return posix_utimensat(p, TS, ec);
-#endif
-}
-
-} // namespace
-} // end namespace detail
-
-}  // namespace android::hardware::automotive::filesystem
-
-#endif // AUTO_FILESYSTEM_COMMON_H
-/* clang-format on */
diff --git a/automotive/can/1.0/default/libc++fs/src/filesystem/operations.cpp b/automotive/can/1.0/default/libc++fs/src/filesystem/operations.cpp
deleted file mode 100644
index 6a76bdc..0000000
--- a/automotive/can/1.0/default/libc++fs/src/filesystem/operations.cpp
+++ /dev/null
@@ -1,1780 +0,0 @@
-//===--------------------- filesystem/ops.cpp -----------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is dual licensed under the MIT and the University of Illinois Open
-// Source Licenses. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-// TODO(152067309): Remove this once the libc++ upgrade is complete.
-#include <__config>
-#if defined(_LIBCPP_VERSION) && _LIBCPP_VERSION <= 8000
-
-/* clang-format off */
-#include "automotive/filesystem"
-#include <array>
-#include <iterator>
-#include <fstream>
-#include <random> /* for unique_path */
-#include <string_view>
-#include <type_traits>
-#include <vector>
-#include <cstdlib>
-#include <climits>
-
-#include "filesystem_common.h"
-
-#include <unistd.h>
-#include <sys/stat.h>
-#include <sys/statvfs.h>
-#include <time.h>
-#include <fcntl.h> /* values for fchmodat */
-
-#if defined(__linux__)
-#include <linux/version.h>
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 33)
-#include <sys/sendfile.h>
-#define _LIBCPP_USE_SENDFILE
-#endif
-#elif defined(__APPLE__) || __has_include(<copyfile.h>)
-#include <copyfile.h>
-#define _LIBCPP_USE_COPYFILE
-#endif
-
-#if !defined(__APPLE__)
-#define _LIBCPP_USE_CLOCK_GETTIME
-#endif
-
-#if !defined(CLOCK_REALTIME) || !defined(_LIBCPP_USE_CLOCK_GETTIME)
-#include <sys/time.h> // for gettimeofday and timeval
-#endif                // !defined(CLOCK_REALTIME)
-
-#if defined(_LIBCPP_COMPILER_GCC)
-#if _GNUC_VER < 500
-#pragma GCC diagnostic ignored "-Wmissing-field-initializers"
-#endif
-#endif
-
-namespace android::hardware::automotive::filesystem {
-
-#ifdef _VSTD_FS
-#pragma push_macro("_VSTD_FS")
-#else
-#define _LIBAUTO_UNDEF_VSTD_FS
-#endif
-#define _VSTD_FS android::hardware::automotive::filesystem
-
-namespace {
-namespace parser {
-
-using string_view_t = path::__string_view;
-using string_view_pair = pair<string_view_t, string_view_t>;
-using PosPtr = path::value_type const*;
-
-struct PathParser {
-  enum ParserState : unsigned char {
-    // Zero is a special sentinel value used by default constructed iterators.
-    PS_BeforeBegin = path::iterator::_BeforeBegin,
-    PS_InRootName = path::iterator::_InRootName,
-    PS_InRootDir = path::iterator::_InRootDir,
-    PS_InFilenames = path::iterator::_InFilenames,
-    PS_InTrailingSep = path::iterator::_InTrailingSep,
-    PS_AtEnd = path::iterator::_AtEnd
-  };
-
-  const string_view_t Path;
-  string_view_t RawEntry;
-  ParserState State;
-
-private:
-  PathParser(string_view_t P, ParserState State) noexcept : Path(P),
-                                                            State(State) {}
-
-public:
-  PathParser(string_view_t P, string_view_t E, unsigned char S)
-      : Path(P), RawEntry(E), State(static_cast<ParserState>(S)) {
-    // S cannot be '0' or PS_BeforeBegin.
-  }
-
-  static PathParser CreateBegin(string_view_t P) noexcept {
-    PathParser PP(P, PS_BeforeBegin);
-    PP.increment();
-    return PP;
-  }
-
-  static PathParser CreateEnd(string_view_t P) noexcept {
-    PathParser PP(P, PS_AtEnd);
-    return PP;
-  }
-
-  PosPtr peek() const noexcept {
-    auto TkEnd = getNextTokenStartPos();
-    auto End = getAfterBack();
-    return TkEnd == End ? nullptr : TkEnd;
-  }
-
-  void increment() noexcept {
-    const PosPtr End = getAfterBack();
-    const PosPtr Start = getNextTokenStartPos();
-    if (Start == End)
-      return makeState(PS_AtEnd);
-
-    switch (State) {
-    case PS_BeforeBegin: {
-      PosPtr TkEnd = consumeSeparator(Start, End);
-      if (TkEnd)
-        return makeState(PS_InRootDir, Start, TkEnd);
-      else
-        return makeState(PS_InFilenames, Start, consumeName(Start, End));
-    }
-    case PS_InRootDir:
-      return makeState(PS_InFilenames, Start, consumeName(Start, End));
-
-    case PS_InFilenames: {
-      PosPtr SepEnd = consumeSeparator(Start, End);
-      if (SepEnd != End) {
-        PosPtr TkEnd = consumeName(SepEnd, End);
-        if (TkEnd)
-          return makeState(PS_InFilenames, SepEnd, TkEnd);
-      }
-      return makeState(PS_InTrailingSep, Start, SepEnd);
-    }
-
-    case PS_InTrailingSep:
-      return makeState(PS_AtEnd);
-
-    case PS_InRootName:
-    case PS_AtEnd:
-      _LIBCPP_UNREACHABLE();
-    }
-  }
-
-  void decrement() noexcept {
-    const PosPtr REnd = getBeforeFront();
-    const PosPtr RStart = getCurrentTokenStartPos() - 1;
-    if (RStart == REnd) // we're decrementing the begin
-      return makeState(PS_BeforeBegin);
-
-    switch (State) {
-    case PS_AtEnd: {
-      // Try to consume a trailing separator or root directory first.
-      if (PosPtr SepEnd = consumeSeparator(RStart, REnd)) {
-        if (SepEnd == REnd)
-          return makeState(PS_InRootDir, Path.data(), RStart + 1);
-        return makeState(PS_InTrailingSep, SepEnd + 1, RStart + 1);
-      } else {
-        PosPtr TkStart = consumeName(RStart, REnd);
-        return makeState(PS_InFilenames, TkStart + 1, RStart + 1);
-      }
-    }
-    case PS_InTrailingSep:
-      return makeState(PS_InFilenames, consumeName(RStart, REnd) + 1,
-                       RStart + 1);
-    case PS_InFilenames: {
-      PosPtr SepEnd = consumeSeparator(RStart, REnd);
-      if (SepEnd == REnd)
-        return makeState(PS_InRootDir, Path.data(), RStart + 1);
-      PosPtr TkEnd = consumeName(SepEnd, REnd);
-      return makeState(PS_InFilenames, TkEnd + 1, SepEnd + 1);
-    }
-    case PS_InRootDir:
-      // return makeState(PS_InRootName, Path.data(), RStart + 1);
-    case PS_InRootName:
-    case PS_BeforeBegin:
-      _LIBCPP_UNREACHABLE();
-    }
-  }
-
-  /// \brief Return a view with the "preferred representation" of the current
-  ///   element. For example trailing separators are represented as a '.'
-  string_view_t operator*() const noexcept {
-    switch (State) {
-    case PS_BeforeBegin:
-    case PS_AtEnd:
-      return "";
-    case PS_InRootDir:
-      return "/";
-    case PS_InTrailingSep:
-      return "";
-    case PS_InRootName:
-    case PS_InFilenames:
-      return RawEntry;
-    }
-    _LIBCPP_UNREACHABLE();
-  }
-
-  explicit operator bool() const noexcept {
-    return State != PS_BeforeBegin && State != PS_AtEnd;
-  }
-
-  PathParser& operator++() noexcept {
-    increment();
-    return *this;
-  }
-
-  PathParser& operator--() noexcept {
-    decrement();
-    return *this;
-  }
-
-  bool atEnd() const noexcept {
-    return State == PS_AtEnd;
-  }
-
-  bool inRootDir() const noexcept {
-    return State == PS_InRootDir;
-  }
-
-  bool inRootName() const noexcept {
-    return State == PS_InRootName;
-  }
-
-  bool inRootPath() const noexcept {
-    return inRootName() || inRootDir();
-  }
-
-private:
-  void makeState(ParserState NewState, PosPtr Start, PosPtr End) noexcept {
-    State = NewState;
-    RawEntry = string_view_t(Start, End - Start);
-  }
-  void makeState(ParserState NewState) noexcept {
-    State = NewState;
-    RawEntry = {};
-  }
-
-  PosPtr getAfterBack() const noexcept { return Path.data() + Path.size(); }
-
-  PosPtr getBeforeFront() const noexcept { return Path.data() - 1; }
-
-  /// \brief Return a pointer to the first character after the currently
-  ///   lexed element.
-  PosPtr getNextTokenStartPos() const noexcept {
-    switch (State) {
-    case PS_BeforeBegin:
-      return Path.data();
-    case PS_InRootName:
-    case PS_InRootDir:
-    case PS_InFilenames:
-      return &RawEntry.back() + 1;
-    case PS_InTrailingSep:
-    case PS_AtEnd:
-      return getAfterBack();
-    }
-    _LIBCPP_UNREACHABLE();
-  }
-
-  /// \brief Return a pointer to the first character in the currently lexed
-  ///   element.
-  PosPtr getCurrentTokenStartPos() const noexcept {
-    switch (State) {
-    case PS_BeforeBegin:
-    case PS_InRootName:
-      return &Path.front();
-    case PS_InRootDir:
-    case PS_InFilenames:
-    case PS_InTrailingSep:
-      return &RawEntry.front();
-    case PS_AtEnd:
-      return &Path.back() + 1;
-    }
-    _LIBCPP_UNREACHABLE();
-  }
-
-  PosPtr consumeSeparator(PosPtr P, PosPtr End) const noexcept {
-    if (P == End || *P != '/')
-      return nullptr;
-    const int Inc = P < End ? 1 : -1;
-    P += Inc;
-    while (P != End && *P == '/')
-      P += Inc;
-    return P;
-  }
-
-  PosPtr consumeName(PosPtr P, PosPtr End) const noexcept {
-    if (P == End || *P == '/')
-      return nullptr;
-    const int Inc = P < End ? 1 : -1;
-    P += Inc;
-    while (P != End && *P != '/')
-      P += Inc;
-    return P;
-  }
-};
-
-string_view_pair separate_filename(string_view_t const& s) {
-  if (s == "." || s == ".." || s.empty())
-    return string_view_pair{s, ""};
-  auto pos = s.find_last_of('.');
-  if (pos == string_view_t::npos || pos == 0)
-    return string_view_pair{s, string_view_t{}};
-  return string_view_pair{s.substr(0, pos), s.substr(pos)};
-}
-
-string_view_t createView(PosPtr S, PosPtr E) noexcept {
-  return {S, static_cast<size_t>(E - S) + 1};
-}
-
-} // namespace parser
-} // namespace
-
-//                       POSIX HELPERS
-
-namespace detail {
-namespace {
-
-using value_type = path::value_type;
-using string_type = path::string_type;
-
-struct FileDescriptor {
-  const path& name;
-  int fd = -1;
-  StatT m_stat;
-  file_status m_status;
-
-  template <class... Args>
-  static FileDescriptor create(const path* p, error_code& ec, Args... args) {
-    ec.clear();
-    int fd;
-    if ((fd = ::open(p->c_str(), args...)) == -1) {
-      ec = capture_errno();
-      return FileDescriptor{p};
-    }
-    return FileDescriptor(p, fd);
-  }
-
-  template <class... Args>
-  static FileDescriptor create_with_status(const path* p, error_code& ec,
-                                           Args... args) {
-    FileDescriptor fd = create(p, ec, args...);
-    if (!ec)
-      fd.refresh_status(ec);
-
-    return fd;
-  }
-
-  file_status get_status() const { return m_status; }
-  StatT const& get_stat() const { return m_stat; }
-
-  bool status_known() const { return _VSTD_FS::status_known(m_status); }
-
-  file_status refresh_status(error_code& ec);
-
-  void close() noexcept {
-    if (fd != -1)
-      ::close(fd);
-    fd = -1;
-  }
-
-  FileDescriptor(FileDescriptor&& other)
-      : name(other.name), fd(other.fd), m_stat(other.m_stat),
-        m_status(other.m_status) {
-    other.fd = -1;
-    other.m_status = file_status{};
-  }
-
-  ~FileDescriptor() { close(); }
-
-  FileDescriptor(FileDescriptor const&) = delete;
-  FileDescriptor& operator=(FileDescriptor const&) = delete;
-
-private:
-  explicit FileDescriptor(const path* p, int fd = -1) : name(*p), fd(fd) {}
-};
-
-perms posix_get_perms(const StatT& st) noexcept {
-  return static_cast<perms>(st.st_mode) & perms::mask;
-}
-
-::mode_t posix_convert_perms(perms prms) {
-  return static_cast< ::mode_t>(prms & perms::mask);
-}
-
-file_status create_file_status(error_code& m_ec, path const& p,
-                               const StatT& path_stat, error_code* ec) {
-  if (ec)
-    *ec = m_ec;
-  if (m_ec && (m_ec.value() == ENOENT || m_ec.value() == ENOTDIR)) {
-    return file_status(file_type::not_found);
-  } else if (m_ec) {
-    ErrorHandler<void> err("posix_stat", ec, &p);
-    err.report(m_ec, "failed to determine attributes for the specified path");
-    return file_status(file_type::none);
-  }
-  // else
-
-  file_status fs_tmp;
-  auto const mode = path_stat.st_mode;
-  if (S_ISLNK(mode))
-    fs_tmp.type(file_type::symlink);
-  else if (S_ISREG(mode))
-    fs_tmp.type(file_type::regular);
-  else if (S_ISDIR(mode))
-    fs_tmp.type(file_type::directory);
-  else if (S_ISBLK(mode))
-    fs_tmp.type(file_type::block);
-  else if (S_ISCHR(mode))
-    fs_tmp.type(file_type::character);
-  else if (S_ISFIFO(mode))
-    fs_tmp.type(file_type::fifo);
-  else if (S_ISSOCK(mode))
-    fs_tmp.type(file_type::socket);
-  else
-    fs_tmp.type(file_type::unknown);
-
-  fs_tmp.permissions(detail::posix_get_perms(path_stat));
-  return fs_tmp;
-}
-
-file_status posix_stat(path const& p, StatT& path_stat, error_code* ec) {
-  error_code m_ec;
-  if (::stat(p.c_str(), &path_stat) == -1)
-    m_ec = detail::capture_errno();
-  return create_file_status(m_ec, p, path_stat, ec);
-}
-
-file_status posix_stat(path const& p, error_code* ec) {
-  StatT path_stat;
-  return posix_stat(p, path_stat, ec);
-}
-
-file_status posix_lstat(path const& p, StatT& path_stat, error_code* ec) {
-  error_code m_ec;
-  if (::lstat(p.c_str(), &path_stat) == -1)
-    m_ec = detail::capture_errno();
-  return create_file_status(m_ec, p, path_stat, ec);
-}
-
-file_status posix_lstat(path const& p, error_code* ec) {
-  StatT path_stat;
-  return posix_lstat(p, path_stat, ec);
-}
-
-bool posix_ftruncate(const FileDescriptor& fd, size_t to_size, error_code& ec) {
-  if (::ftruncate(fd.fd, to_size) == -1) {
-    ec = capture_errno();
-    return true;
-  }
-  ec.clear();
-  return false;
-}
-
-bool posix_fchmod(const FileDescriptor& fd, const StatT& st, error_code& ec) {
-  if (::fchmod(fd.fd, st.st_mode) == -1) {
-    ec = capture_errno();
-    return true;
-  }
-  ec.clear();
-  return false;
-}
-
-bool stat_equivalent(const StatT& st1, const StatT& st2) {
-  return (st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino);
-}
-
-file_status FileDescriptor::refresh_status(error_code& ec) {
-  // FD must be open and good.
-  m_status = file_status{};
-  m_stat = {};
-  error_code m_ec;
-  if (::fstat(fd, &m_stat) == -1)
-    m_ec = capture_errno();
-  m_status = create_file_status(m_ec, name, m_stat, &ec);
-  return m_status;
-}
-} // namespace
-} // end namespace detail
-
-using detail::capture_errno;
-using detail::ErrorHandler;
-using detail::StatT;
-using detail::TimeSpec;
-using parser::createView;
-using parser::PathParser;
-using parser::string_view_t;
-
-const bool _FilesystemClock::is_steady;
-
-_FilesystemClock::time_point _FilesystemClock::now() noexcept {
-  typedef chrono::duration<rep> __secs;
-#if defined(_LIBCPP_USE_CLOCK_GETTIME) && defined(CLOCK_REALTIME)
-  typedef chrono::duration<rep, nano> __nsecs;
-  struct timespec tp;
-  if (0 != clock_gettime(CLOCK_REALTIME, &tp))
-    __throw_system_error(errno, "clock_gettime(CLOCK_REALTIME) failed");
-  return time_point(__secs(tp.tv_sec) +
-                    chrono::duration_cast<duration>(__nsecs(tp.tv_nsec)));
-#else
-  typedef chrono::duration<rep, micro> __microsecs;
-  timeval tv;
-  gettimeofday(&tv, 0);
-  return time_point(__secs(tv.tv_sec) + __microsecs(tv.tv_usec));
-#endif // _LIBCPP_USE_CLOCK_GETTIME && CLOCK_REALTIME
-}
-
-filesystem_error::~filesystem_error() {}
-
-void filesystem_error::__create_what(int __num_paths) {
-  const char* derived_what = system_error::what();
-  __storage_->__what_ = [&]() -> string {
-    const char* p1 = path1().native().empty() ? "\"\"" : path1().c_str();
-    const char* p2 = path2().native().empty() ? "\"\"" : path2().c_str();
-    switch (__num_paths) {
-    default:
-      return detail::format_string("filesystem error: %s", derived_what);
-    case 1:
-      return detail::format_string("filesystem error: %s [%s]", derived_what,
-                                   p1);
-    case 2:
-      return detail::format_string("filesystem error: %s [%s] [%s]",
-                                   derived_what, p1, p2);
-    }
-  }();
-}
-
-static path __do_absolute(const path& p, path* cwd, error_code* ec) {
-  if (ec)
-    ec->clear();
-  if (p.is_absolute())
-    return p;
-  *cwd = __current_path(ec);
-  if (ec && *ec)
-    return {};
-  return (*cwd) / p;
-}
-
-path __absolute(const path& p, error_code* ec) {
-  path cwd;
-  return __do_absolute(p, &cwd, ec);
-}
-
-path __canonical(path const& orig_p, error_code* ec) {
-  path cwd;
-  ErrorHandler<path> err("canonical", ec, &orig_p, &cwd);
-
-  path p = __do_absolute(orig_p, &cwd, ec);
-  char buff[PATH_MAX + 1];
-  char* ret;
-  if ((ret = ::realpath(p.c_str(), buff)) == nullptr)
-    return err.report(capture_errno());
-  return {ret};
-}
-
-void __copy(const path& from, const path& to, copy_options options,
-            error_code* ec) {
-  ErrorHandler<void> err("copy", ec, &from, &to);
-
-  const bool sym_status = bool(
-      options & (copy_options::create_symlinks | copy_options::skip_symlinks));
-
-  const bool sym_status2 = bool(options & copy_options::copy_symlinks);
-
-  error_code m_ec1;
-  StatT f_st = {};
-  const file_status f = sym_status || sym_status2
-                            ? detail::posix_lstat(from, f_st, &m_ec1)
-                            : detail::posix_stat(from, f_st, &m_ec1);
-  if (m_ec1)
-    return err.report(m_ec1);
-
-  StatT t_st = {};
-  const file_status t = sym_status ? detail::posix_lstat(to, t_st, &m_ec1)
-                                   : detail::posix_stat(to, t_st, &m_ec1);
-
-  if (not status_known(t))
-    return err.report(m_ec1);
-
-  if (!exists(f) || is_other(f) || is_other(t) ||
-      (is_directory(f) && is_regular_file(t)) ||
-      detail::stat_equivalent(f_st, t_st)) {
-    return err.report(errc::function_not_supported);
-  }
-
-  if (ec)
-    ec->clear();
-
-  if (is_symlink(f)) {
-    if (bool(copy_options::skip_symlinks & options)) {
-      // do nothing
-    } else if (not exists(t)) {
-      __copy_symlink(from, to, ec);
-    } else {
-      return err.report(errc::file_exists);
-    }
-    return;
-  } else if (is_regular_file(f)) {
-    if (bool(copy_options::directories_only & options)) {
-      // do nothing
-    } else if (bool(copy_options::create_symlinks & options)) {
-      __create_symlink(from, to, ec);
-    } else if (bool(copy_options::create_hard_links & options)) {
-      __create_hard_link(from, to, ec);
-    } else if (is_directory(t)) {
-      __copy_file(from, to / from.filename(), options, ec);
-    } else {
-      __copy_file(from, to, options, ec);
-    }
-    return;
-  } else if (is_directory(f) && bool(copy_options::create_symlinks & options)) {
-    return err.report(errc::is_a_directory);
-  } else if (is_directory(f) && (bool(copy_options::recursive & options) ||
-                                 copy_options::none == options)) {
-
-    if (!exists(t)) {
-      // create directory to with attributes from 'from'.
-      __create_directory(to, from, ec);
-      if (ec && *ec) {
-        return;
-      }
-    }
-    directory_iterator it =
-        ec ? directory_iterator(from, *ec) : directory_iterator(from);
-    if (ec && *ec) {
-      return;
-    }
-    error_code m_ec2;
-    for (; it != directory_iterator(); it.increment(m_ec2)) {
-      if (m_ec2) {
-        return err.report(m_ec2);
-      }
-      __copy(it->path(), to / it->path().filename(),
-             options | copy_options::__in_recursive_copy, ec);
-      if (ec && *ec) {
-        return;
-      }
-    }
-  }
-}
-
-namespace detail {
-namespace {
-
-#ifdef _LIBCPP_USE_SENDFILE
-bool copy_file_impl_sendfile(FileDescriptor& read_fd, FileDescriptor& write_fd,
-                             error_code& ec) {
-
-  size_t count = read_fd.get_stat().st_size;
-  do {
-    ssize_t res;
-    if ((res = ::sendfile(write_fd.fd, read_fd.fd, nullptr, count)) == -1) {
-      ec = capture_errno();
-      return false;
-    }
-    count -= res;
-  } while (count > 0);
-
-  ec.clear();
-
-  return true;
-}
-#elif defined(_LIBCPP_USE_COPYFILE)
-bool copy_file_impl_copyfile(FileDescriptor& read_fd, FileDescriptor& write_fd,
-                             error_code& ec) {
-  struct CopyFileState {
-    copyfile_state_t state;
-    CopyFileState() { state = copyfile_state_alloc(); }
-    ~CopyFileState() { copyfile_state_free(state); }
-
-  private:
-    CopyFileState(CopyFileState const&) = delete;
-    CopyFileState& operator=(CopyFileState const&) = delete;
-  };
-
-  CopyFileState cfs;
-  if (fcopyfile(read_fd.fd, write_fd.fd, cfs.state, COPYFILE_DATA) < 0) {
-    ec = capture_errno();
-    return false;
-  }
-
-  ec.clear();
-  return true;
-}
-#endif
-
-// Note: This function isn't guarded by ifdef's even though it may be unused
-// in order to assure it still compiles.
-__attribute__((unused)) bool copy_file_impl_default(FileDescriptor& read_fd,
-                                                    FileDescriptor& write_fd,
-                                                    error_code& ec) {
-  ifstream in;
-  in.__open(read_fd.fd, ios::binary);
-  if (!in.is_open()) {
-    // This assumes that __open didn't reset the error code.
-    ec = capture_errno();
-    return false;
-  }
-  ofstream out;
-  out.__open(write_fd.fd, ios::binary);
-  if (!out.is_open()) {
-    ec = capture_errno();
-    return false;
-  }
-
-  if (in.good() && out.good()) {
-    using InIt = istreambuf_iterator<char>;
-    using OutIt = ostreambuf_iterator<char>;
-    InIt bin(in);
-    InIt ein;
-    OutIt bout(out);
-    copy(bin, ein, bout);
-  }
-  if (out.fail() || in.fail()) {
-    ec = make_error_code(errc::io_error);
-    return false;
-  }
-
-  ec.clear();
-  return true;
-}
-
-bool copy_file_impl(FileDescriptor& from, FileDescriptor& to, error_code& ec) {
-#if defined(_LIBCPP_USE_SENDFILE)
-  return copy_file_impl_sendfile(from, to, ec);
-#elif defined(_LIBCPP_USE_COPYFILE)
-  return copy_file_impl_copyfile(from, to, ec);
-#else
-  return copy_file_impl_default(from, to, ec);
-#endif
-}
-
-} // namespace
-} // namespace detail
-
-bool __copy_file(const path& from, const path& to, copy_options options,
-                 error_code* ec) {
-  using detail::FileDescriptor;
-  ErrorHandler<bool> err("copy_file", ec, &to, &from);
-
-  error_code m_ec;
-  FileDescriptor from_fd =
-      FileDescriptor::create_with_status(&from, m_ec, O_RDONLY | O_NONBLOCK);
-  if (m_ec)
-    return err.report(m_ec);
-
-  auto from_st = from_fd.get_status();
-  StatT const& from_stat = from_fd.get_stat();
-  if (!is_regular_file(from_st)) {
-    if (not m_ec)
-      m_ec = make_error_code(errc::not_supported);
-    return err.report(m_ec);
-  }
-
-  const bool skip_existing = bool(copy_options::skip_existing & options);
-  const bool update_existing = bool(copy_options::update_existing & options);
-  const bool overwrite_existing =
-      bool(copy_options::overwrite_existing & options);
-
-  StatT to_stat_path;
-  file_status to_st = detail::posix_stat(to, to_stat_path, &m_ec);
-  if (!status_known(to_st))
-    return err.report(m_ec);
-
-  const bool to_exists = exists(to_st);
-  if (to_exists && !is_regular_file(to_st))
-    return err.report(errc::not_supported);
-
-  if (to_exists && detail::stat_equivalent(from_stat, to_stat_path))
-    return err.report(errc::file_exists);
-
-  if (to_exists && skip_existing)
-    return false;
-
-  bool ShouldCopy = [&]() {
-    if (to_exists && update_existing) {
-      auto from_time = detail::extract_mtime(from_stat);
-      auto to_time = detail::extract_mtime(to_stat_path);
-      if (from_time.tv_sec < to_time.tv_sec)
-        return false;
-      if (from_time.tv_sec == to_time.tv_sec &&
-          from_time.tv_nsec <= to_time.tv_nsec)
-        return false;
-      return true;
-    }
-    if (!to_exists || overwrite_existing)
-      return true;
-    return err.report(errc::file_exists);
-  }();
-  if (!ShouldCopy)
-    return false;
-
-  // Don't truncate right away. We may not be opening the file we originally
-  // looked at; we'll check this later.
-  int to_open_flags = O_WRONLY;
-  if (!to_exists)
-    to_open_flags |= O_CREAT;
-  FileDescriptor to_fd = FileDescriptor::create_with_status(
-      &to, m_ec, to_open_flags, from_stat.st_mode);
-  if (m_ec)
-    return err.report(m_ec);
-
-  if (to_exists) {
-    // Check that the file we initially stat'ed is equivalent to the one
-    // we opened.
-    // FIXME: report this better.
-    if (!detail::stat_equivalent(to_stat_path, to_fd.get_stat()))
-      return err.report(errc::bad_file_descriptor);
-
-    // Set the permissions and truncate the file we opened.
-    if (detail::posix_fchmod(to_fd, from_stat, m_ec))
-      return err.report(m_ec);
-    if (detail::posix_ftruncate(to_fd, 0, m_ec))
-      return err.report(m_ec);
-  }
-
-  if (!copy_file_impl(from_fd, to_fd, m_ec)) {
-    // FIXME: Remove the dest file if we failed, and it didn't exist previously.
-    return err.report(m_ec);
-  }
-
-  return true;
-}
-
-void __copy_symlink(const path& existing_symlink, const path& new_symlink,
-                    error_code* ec) {
-  const path real_path(__read_symlink(existing_symlink, ec));
-  if (ec && *ec) {
-    return;
-  }
-  // NOTE: proposal says you should detect if you should call
-  // create_symlink or create_directory_symlink. I don't think this
-  // is needed with POSIX
-  __create_symlink(real_path, new_symlink, ec);
-}
-
-bool __create_directories(const path& p, error_code* ec) {
-  ErrorHandler<bool> err("create_directories", ec, &p);
-
-  error_code m_ec;
-  auto const st = detail::posix_stat(p, &m_ec);
-  if (!status_known(st))
-    return err.report(m_ec);
-  else if (is_directory(st))
-    return false;
-  else if (exists(st))
-    return err.report(errc::file_exists);
-
-  const path parent = p.parent_path();
-  if (!parent.empty()) {
-    const file_status parent_st = status(parent, m_ec);
-    if (not status_known(parent_st))
-      return err.report(m_ec);
-    if (not exists(parent_st)) {
-      __create_directories(parent, ec);
-      if (ec && *ec) {
-        return false;
-      }
-    }
-  }
-  return __create_directory(p, ec);
-}
-
-bool __create_directory(const path& p, error_code* ec) {
-  ErrorHandler<bool> err("create_directory", ec, &p);
-
-  if (::mkdir(p.c_str(), static_cast<int>(perms::all)) == 0)
-    return true;
-  if (errno != EEXIST)
-    err.report(capture_errno());
-  return false;
-}
-
-bool __create_directory(path const& p, path const& attributes, error_code* ec) {
-  ErrorHandler<bool> err("create_directory", ec, &p, &attributes);
-
-  StatT attr_stat;
-  error_code mec;
-  auto st = detail::posix_stat(attributes, attr_stat, &mec);
-  if (!status_known(st))
-    return err.report(mec);
-  if (!is_directory(st))
-    return err.report(errc::not_a_directory,
-                      "the specified attribute path is invalid");
-
-  if (::mkdir(p.c_str(), attr_stat.st_mode) == 0)
-    return true;
-  if (errno != EEXIST)
-    err.report(capture_errno());
-  return false;
-}
-
-void __create_directory_symlink(path const& from, path const& to,
-                                error_code* ec) {
-  ErrorHandler<void> err("create_directory_symlink", ec, &from, &to);
-  if (::symlink(from.c_str(), to.c_str()) != 0)
-    return err.report(capture_errno());
-}
-
-void __create_hard_link(const path& from, const path& to, error_code* ec) {
-  ErrorHandler<void> err("create_hard_link", ec, &from, &to);
-  if (::link(from.c_str(), to.c_str()) == -1)
-    return err.report(capture_errno());
-}
-
-void __create_symlink(path const& from, path const& to, error_code* ec) {
-  ErrorHandler<void> err("create_symlink", ec, &from, &to);
-  if (::symlink(from.c_str(), to.c_str()) == -1)
-    return err.report(capture_errno());
-}
-
-path __current_path(error_code* ec) {
-  ErrorHandler<path> err("current_path", ec);
-
-  auto size = ::pathconf(".", _PC_PATH_MAX);
-  _LIBCPP_ASSERT(size >= 0, "pathconf returned a 0 as max size");
-
-  auto buff = unique_ptr<char[]>(new char[size + 1]);
-  char* ret;
-  if ((ret = ::getcwd(buff.get(), static_cast<size_t>(size))) == nullptr)
-    return err.report(capture_errno(), "call to getcwd failed");
-
-  return {buff.get()};
-}
-
-void __current_path(const path& p, error_code* ec) {
-  ErrorHandler<void> err("current_path", ec, &p);
-  if (::chdir(p.c_str()) == -1)
-    err.report(capture_errno());
-}
-
-bool __equivalent(const path& p1, const path& p2, error_code* ec) {
-  ErrorHandler<bool> err("equivalent", ec, &p1, &p2);
-
-  error_code ec1, ec2;
-  StatT st1 = {}, st2 = {};
-  auto s1 = detail::posix_stat(p1.native(), st1, &ec1);
-  if (!exists(s1))
-    return err.report(errc::not_supported);
-  auto s2 = detail::posix_stat(p2.native(), st2, &ec2);
-  if (!exists(s2))
-    return err.report(errc::not_supported);
-
-  return detail::stat_equivalent(st1, st2);
-}
-
-uintmax_t __file_size(const path& p, error_code* ec) {
-  ErrorHandler<uintmax_t> err("file_size", ec, &p);
-
-  error_code m_ec;
-  StatT st;
-  file_status fst = detail::posix_stat(p, st, &m_ec);
-  if (!exists(fst) || !is_regular_file(fst)) {
-    errc error_kind =
-        is_directory(fst) ? errc::is_a_directory : errc::not_supported;
-    if (!m_ec)
-      m_ec = make_error_code(error_kind);
-    return err.report(m_ec);
-  }
-  // is_regular_file(p) == true
-  return static_cast<uintmax_t>(st.st_size);
-}
-
-uintmax_t __hard_link_count(const path& p, error_code* ec) {
-  ErrorHandler<uintmax_t> err("hard_link_count", ec, &p);
-
-  error_code m_ec;
-  StatT st;
-  detail::posix_stat(p, st, &m_ec);
-  if (m_ec)
-    return err.report(m_ec);
-  return static_cast<uintmax_t>(st.st_nlink);
-}
-
-bool __fs_is_empty(const path& p, error_code* ec) {
-  ErrorHandler<bool> err("is_empty", ec, &p);
-
-  error_code m_ec;
-  StatT pst;
-  auto st = detail::posix_stat(p, pst, &m_ec);
-  if (m_ec)
-    return err.report(m_ec);
-  else if (!is_directory(st) && !is_regular_file(st))
-    return err.report(errc::not_supported);
-  else if (is_directory(st)) {
-    auto it = ec ? directory_iterator(p, *ec) : directory_iterator(p);
-    if (ec && *ec)
-      return false;
-    return it == directory_iterator{};
-  } else if (is_regular_file(st))
-    return static_cast<uintmax_t>(pst.st_size) == 0;
-
-  _LIBCPP_UNREACHABLE();
-}
-
-static file_time_type __extract_last_write_time(const path& p, const StatT& st,
-                                                error_code* ec) {
-  using detail::fs_time;
-  ErrorHandler<file_time_type> err("last_write_time", ec, &p);
-
-  auto ts = detail::extract_mtime(st);
-  if (!fs_time::is_representable(ts))
-    return err.report(errc::value_too_large);
-
-  return fs_time::convert_from_timespec(ts);
-}
-
-file_time_type __last_write_time(const path& p, error_code* ec) {
-  using namespace chrono;
-  ErrorHandler<file_time_type> err("last_write_time", ec, &p);
-
-  error_code m_ec;
-  StatT st;
-  detail::posix_stat(p, st, &m_ec);
-  if (m_ec)
-    return err.report(m_ec);
-  return __extract_last_write_time(p, st, ec);
-}
-
-void __last_write_time(const path& p, file_time_type new_time, error_code* ec) {
-  using detail::fs_time;
-  ErrorHandler<void> err("last_write_time", ec, &p);
-
-  error_code m_ec;
-  array<TimeSpec, 2> tbuf;
-#if !defined(_LIBCPP_USE_UTIMENSAT)
-  // This implementation has a race condition between determining the
-  // last access time and attempting to set it to the same value using
-  // ::utimes
-  StatT st;
-  file_status fst = detail::posix_stat(p, st, &m_ec);
-  if (m_ec)
-    return err.report(m_ec);
-  tbuf[0] = detail::extract_atime(st);
-#else
-  tbuf[0].tv_sec = 0;
-  tbuf[0].tv_nsec = UTIME_OMIT;
-#endif
-  if (!fs_time::convert_to_timespec(tbuf[1], new_time))
-    return err.report(errc::value_too_large);
-
-  detail::set_file_times(p, tbuf, m_ec);
-  if (m_ec)
-    return err.report(m_ec);
-}
-
-void __permissions(const path& p, perms prms, perm_options opts,
-                   error_code* ec) {
-  ErrorHandler<void> err("permissions", ec, &p);
-
-  auto has_opt = [&](perm_options o) { return bool(o & opts); };
-  const bool resolve_symlinks = !has_opt(perm_options::nofollow);
-  const bool add_perms = has_opt(perm_options::add);
-  const bool remove_perms = has_opt(perm_options::remove);
-  _LIBCPP_ASSERT(
-      (add_perms + remove_perms + has_opt(perm_options::replace)) == 1,
-      "One and only one of the perm_options constants replace, add, or remove "
-      "is present in opts");
-
-  bool set_sym_perms = false;
-  prms &= perms::mask;
-  if (!resolve_symlinks || (add_perms || remove_perms)) {
-    error_code m_ec;
-    file_status st = resolve_symlinks ? detail::posix_stat(p, &m_ec)
-                                      : detail::posix_lstat(p, &m_ec);
-    set_sym_perms = is_symlink(st);
-    if (m_ec)
-      return err.report(m_ec);
-    _LIBCPP_ASSERT(st.permissions() != perms::unknown,
-                   "Permissions unexpectedly unknown");
-    if (add_perms)
-      prms |= st.permissions();
-    else if (remove_perms)
-      prms = st.permissions() & ~prms;
-  }
-  const auto real_perms = detail::posix_convert_perms(prms);
-
-#if defined(AT_SYMLINK_NOFOLLOW) && defined(AT_FDCWD)
-  const int flags = set_sym_perms ? AT_SYMLINK_NOFOLLOW : 0;
-  if (::fchmodat(AT_FDCWD, p.c_str(), real_perms, flags) == -1) {
-    return err.report(capture_errno());
-  }
-#else
-  if (set_sym_perms)
-    return err.report(errc::operation_not_supported);
-  if (::chmod(p.c_str(), real_perms) == -1) {
-    return err.report(capture_errno());
-  }
-#endif
-}
-
-path __read_symlink(const path& p, error_code* ec) {
-  ErrorHandler<path> err("read_symlink", ec, &p);
-
-  char buff[PATH_MAX + 1];
-  error_code m_ec;
-  ::ssize_t ret;
-  if ((ret = ::readlink(p.c_str(), buff, PATH_MAX)) == -1) {
-    return err.report(capture_errno());
-  }
-  _LIBCPP_ASSERT(ret <= PATH_MAX, "TODO");
-  _LIBCPP_ASSERT(ret > 0, "TODO");
-  buff[ret] = 0;
-  return {buff};
-}
-
-bool __remove(const path& p, error_code* ec) {
-  ErrorHandler<bool> err("remove", ec, &p);
-  if (::remove(p.c_str()) == -1) {
-    if (errno != ENOENT)
-      err.report(capture_errno());
-    return false;
-  }
-  return true;
-}
-
-namespace {
-
-uintmax_t remove_all_impl(path const& p, error_code& ec) {
-  const auto npos = static_cast<uintmax_t>(-1);
-  const file_status st = __symlink_status(p, &ec);
-  if (ec)
-    return npos;
-  uintmax_t count = 1;
-  if (is_directory(st)) {
-    for (directory_iterator it(p, ec); !ec && it != directory_iterator();
-         it.increment(ec)) {
-      auto other_count = remove_all_impl(it->path(), ec);
-      if (ec)
-        return npos;
-      count += other_count;
-    }
-    if (ec)
-      return npos;
-  }
-  if (!__remove(p, &ec))
-    return npos;
-  return count;
-}
-
-} // end namespace
-
-uintmax_t __remove_all(const path& p, error_code* ec) {
-  ErrorHandler<uintmax_t> err("remove_all", ec, &p);
-
-  error_code mec;
-  auto count = remove_all_impl(p, mec);
-  if (mec) {
-    if (mec == errc::no_such_file_or_directory)
-      return 0;
-    return err.report(mec);
-  }
-  return count;
-}
-
-void __rename(const path& from, const path& to, error_code* ec) {
-  ErrorHandler<void> err("rename", ec, &from, &to);
-  if (::rename(from.c_str(), to.c_str()) == -1)
-    err.report(capture_errno());
-}
-
-void __resize_file(const path& p, uintmax_t size, error_code* ec) {
-  ErrorHandler<void> err("resize_file", ec, &p);
-  if (::truncate(p.c_str(), static_cast< ::off_t>(size)) == -1)
-    return err.report(capture_errno());
-}
-
-space_info __space(const path& p, error_code* ec) {
-  ErrorHandler<void> err("space", ec, &p);
-  space_info si;
-  struct statvfs m_svfs = {};
-  if (::statvfs(p.c_str(), &m_svfs) == -1) {
-    err.report(capture_errno());
-    si.capacity = si.free = si.available = static_cast<uintmax_t>(-1);
-    return si;
-  }
-  // Multiply with overflow checking.
-  auto do_mult = [&](uintmax_t& out, uintmax_t other) {
-    out = other * m_svfs.f_frsize;
-    if (other == 0 || out / other != m_svfs.f_frsize)
-      out = static_cast<uintmax_t>(-1);
-  };
-  do_mult(si.capacity, m_svfs.f_blocks);
-  do_mult(si.free, m_svfs.f_bfree);
-  do_mult(si.available, m_svfs.f_bavail);
-  return si;
-}
-
-file_status __status(const path& p, error_code* ec) {
-  return detail::posix_stat(p, ec);
-}
-
-file_status __symlink_status(const path& p, error_code* ec) {
-  return detail::posix_lstat(p, ec);
-}
-
-path __temp_directory_path(error_code* ec) {
-  ErrorHandler<path> err("temp_directory_path", ec);
-
-  const char* env_paths[] = {"TMPDIR", "TMP", "TEMP", "TEMPDIR"};
-  const char* ret = nullptr;
-
-  for (auto& ep : env_paths)
-    if ((ret = getenv(ep)))
-      break;
-  if (ret == nullptr)
-    ret = "/tmp";
-
-  path p(ret);
-  error_code m_ec;
-  file_status st = detail::posix_stat(p, &m_ec);
-  if (!status_known(st))
-    return err.report(m_ec, "cannot access path \"%s\"", p);
-
-  if (!exists(st) || !is_directory(st))
-    return err.report(errc::not_a_directory, "path \"%s\" is not a directory",
-                      p);
-
-  return p;
-}
-
-path __weakly_canonical(const path& p, error_code* ec) {
-  ErrorHandler<path> err("weakly_canonical", ec, &p);
-
-  if (p.empty())
-    return __canonical("", ec);
-
-  path result;
-  path tmp;
-  tmp.__reserve(p.native().size());
-  auto PP = PathParser::CreateEnd(p.native());
-  --PP;
-  vector<string_view_t> DNEParts;
-
-  while (PP.State != PathParser::PS_BeforeBegin) {
-    tmp.assign(createView(p.native().data(), &PP.RawEntry.back()));
-    error_code m_ec;
-    file_status st = __status(tmp, &m_ec);
-    if (!status_known(st)) {
-      return err.report(m_ec);
-    } else if (exists(st)) {
-      result = __canonical(tmp, ec);
-      break;
-    }
-    DNEParts.push_back(*PP);
-    --PP;
-  }
-  if (PP.State == PathParser::PS_BeforeBegin)
-    result = __canonical("", ec);
-  if (ec)
-    ec->clear();
-  if (DNEParts.empty())
-    return result;
-  for (auto It = DNEParts.rbegin(); It != DNEParts.rend(); ++It)
-    result /= *It;
-  return result.lexically_normal();
-}
-
-///////////////////////////////////////////////////////////////////////////////
-//                            path definitions
-///////////////////////////////////////////////////////////////////////////////
-
-constexpr path::value_type path::preferred_separator;
-
-path& path::replace_extension(path const& replacement) {
-  path p = extension();
-  if (not p.empty()) {
-    __pn_.erase(__pn_.size() - p.native().size());
-  }
-  if (!replacement.empty()) {
-    if (replacement.native()[0] != '.') {
-      __pn_ += ".";
-    }
-    __pn_.append(replacement.__pn_);
-  }
-  return *this;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// path.decompose
-
-string_view_t path::__root_name() const {
-  auto PP = PathParser::CreateBegin(__pn_);
-  if (PP.State == PathParser::PS_InRootName)
-    return *PP;
-  return {};
-}
-
-string_view_t path::__root_directory() const {
-  auto PP = PathParser::CreateBegin(__pn_);
-  if (PP.State == PathParser::PS_InRootName)
-    ++PP;
-  if (PP.State == PathParser::PS_InRootDir)
-    return *PP;
-  return {};
-}
-
-string_view_t path::__root_path_raw() const {
-  auto PP = PathParser::CreateBegin(__pn_);
-  if (PP.State == PathParser::PS_InRootName) {
-    auto NextCh = PP.peek();
-    if (NextCh && *NextCh == '/') {
-      ++PP;
-      return createView(__pn_.data(), &PP.RawEntry.back());
-    }
-    return PP.RawEntry;
-  }
-  if (PP.State == PathParser::PS_InRootDir)
-    return *PP;
-  return {};
-}
-
-static bool ConsumeRootName(PathParser *PP) {
-  static_assert(PathParser::PS_BeforeBegin == 1 &&
-      PathParser::PS_InRootName == 2,
-      "Values for enums are incorrect");
-  while (PP->State <= PathParser::PS_InRootName)
-    ++(*PP);
-  return PP->State == PathParser::PS_AtEnd;
-}
-
-static bool ConsumeRootDir(PathParser* PP) {
-  static_assert(PathParser::PS_BeforeBegin == 1 &&
-                PathParser::PS_InRootName == 2 &&
-                PathParser::PS_InRootDir == 3, "Values for enums are incorrect");
-  while (PP->State <= PathParser::PS_InRootDir)
-    ++(*PP);
-  return PP->State == PathParser::PS_AtEnd;
-}
-
-string_view_t path::__relative_path() const {
-  auto PP = PathParser::CreateBegin(__pn_);
-  if (ConsumeRootDir(&PP))
-    return {};
-  return createView(PP.RawEntry.data(), &__pn_.back());
-}
-
-string_view_t path::__parent_path() const {
-  if (empty())
-    return {};
-  // Determine if we have a root path but not a relative path. In that case
-  // return *this.
-  {
-    auto PP = PathParser::CreateBegin(__pn_);
-    if (ConsumeRootDir(&PP))
-      return __pn_;
-  }
-  // Otherwise remove a single element from the end of the path, and return
-  // a string representing that path
-  {
-    auto PP = PathParser::CreateEnd(__pn_);
-    --PP;
-    if (PP.RawEntry.data() == __pn_.data())
-      return {};
-    --PP;
-    return createView(__pn_.data(), &PP.RawEntry.back());
-  }
-}
-
-string_view_t path::__filename() const {
-  if (empty())
-    return {};
-  {
-    PathParser PP = PathParser::CreateBegin(__pn_);
-    if (ConsumeRootDir(&PP))
-      return {};
-  }
-  return *(--PathParser::CreateEnd(__pn_));
-}
-
-string_view_t path::__stem() const {
-  return parser::separate_filename(__filename()).first;
-}
-
-string_view_t path::__extension() const {
-  return parser::separate_filename(__filename()).second;
-}
-
-////////////////////////////////////////////////////////////////////////////
-// path.gen
-
-enum PathPartKind : unsigned char {
-  PK_None,
-  PK_RootSep,
-  PK_Filename,
-  PK_Dot,
-  PK_DotDot,
-  PK_TrailingSep
-};
-
-static PathPartKind ClassifyPathPart(string_view_t Part) {
-  if (Part.empty())
-    return PK_TrailingSep;
-  if (Part == ".")
-    return PK_Dot;
-  if (Part == "..")
-    return PK_DotDot;
-  if (Part == "/")
-    return PK_RootSep;
-  return PK_Filename;
-}
-
-path path::lexically_normal() const {
-  if (__pn_.empty())
-    return *this;
-
-  using PartKindPair = pair<string_view_t, PathPartKind>;
-  vector<PartKindPair> Parts;
-  // Guess as to how many elements the path has to avoid reallocating.
-  Parts.reserve(32);
-
-  // Track the total size of the parts as we collect them. This allows the
-  // resulting path to reserve the correct amount of memory.
-  size_t NewPathSize = 0;
-  auto AddPart = [&](PathPartKind K, string_view_t P) {
-    NewPathSize += P.size();
-    Parts.emplace_back(P, K);
-  };
-  auto LastPartKind = [&]() {
-    if (Parts.empty())
-      return PK_None;
-    return Parts.back().second;
-  };
-
-  bool MaybeNeedTrailingSep = false;
-  // Build a stack containing the remaining elements of the path, popping off
-  // elements which occur before a '..' entry.
-  for (auto PP = PathParser::CreateBegin(__pn_); PP; ++PP) {
-    auto Part = *PP;
-    PathPartKind Kind = ClassifyPathPart(Part);
-    switch (Kind) {
-    case PK_Filename:
-    case PK_RootSep: {
-      // Add all non-dot and non-dot-dot elements to the stack of elements.
-      AddPart(Kind, Part);
-      MaybeNeedTrailingSep = false;
-      break;
-    }
-    case PK_DotDot: {
-      // Only push a ".." element if there are no elements preceding the "..",
-      // or if the preceding element is itself "..".
-      auto LastKind = LastPartKind();
-      if (LastKind == PK_Filename) {
-        NewPathSize -= Parts.back().first.size();
-        Parts.pop_back();
-      } else if (LastKind != PK_RootSep)
-        AddPart(PK_DotDot, "..");
-      MaybeNeedTrailingSep = LastKind == PK_Filename;
-      break;
-    }
-    case PK_Dot:
-    case PK_TrailingSep: {
-      MaybeNeedTrailingSep = true;
-      break;
-    }
-    case PK_None:
-      _LIBCPP_UNREACHABLE();
-    }
-  }
-  // [fs.path.generic]p6.8: If the path is empty, add a dot.
-  if (Parts.empty())
-    return ".";
-
-  // [fs.path.generic]p6.7: If the last filename is dot-dot, remove any
-  // trailing directory-separator.
-  bool NeedTrailingSep = MaybeNeedTrailingSep && LastPartKind() == PK_Filename;
-
-  path Result;
-  Result.__pn_.reserve(Parts.size() + NewPathSize + NeedTrailingSep);
-  for (auto& PK : Parts)
-    Result /= PK.first;
-
-  if (NeedTrailingSep)
-    Result /= "";
-
-  return Result;
-}
-
-static int DetermineLexicalElementCount(PathParser PP) {
-  int Count = 0;
-  for (; PP; ++PP) {
-    auto Elem = *PP;
-    if (Elem == "..")
-      --Count;
-    else if (Elem != "." && Elem != "")
-      ++Count;
-  }
-  return Count;
-}
-
-path path::lexically_relative(const path& base) const {
-  { // perform root-name/root-directory mismatch checks
-    auto PP = PathParser::CreateBegin(__pn_);
-    auto PPBase = PathParser::CreateBegin(base.__pn_);
-    auto CheckIterMismatchAtBase = [&]() {
-      return PP.State != PPBase.State &&
-             (PP.inRootPath() || PPBase.inRootPath());
-    };
-    if (PP.inRootName() && PPBase.inRootName()) {
-      if (*PP != *PPBase)
-        return {};
-    } else if (CheckIterMismatchAtBase())
-      return {};
-
-    if (PP.inRootPath())
-      ++PP;
-    if (PPBase.inRootPath())
-      ++PPBase;
-    if (CheckIterMismatchAtBase())
-      return {};
-  }
-
-  // Find the first mismatching element
-  auto PP = PathParser::CreateBegin(__pn_);
-  auto PPBase = PathParser::CreateBegin(base.__pn_);
-  while (PP && PPBase && PP.State == PPBase.State && *PP == *PPBase) {
-    ++PP;
-    ++PPBase;
-  }
-
-  // If there is no mismatch, return ".".
-  if (!PP && !PPBase)
-    return ".";
-
-  // Otherwise, determine the number of elements, 'n', which are not dot or
-  // dot-dot minus the number of dot-dot elements.
-  int ElemCount = DetermineLexicalElementCount(PPBase);
-  if (ElemCount < 0)
-    return {};
-
-  // if n == 0 and (a == end() || a->empty()), returns path("."); otherwise
-  if (ElemCount == 0 && (PP.atEnd() || *PP == ""))
-    return ".";
-
-  // return a path constructed with 'n' dot-dot elements, followed by the
-  // elements of '*this' after the mismatch.
-  path Result;
-  // FIXME: Reserve enough room in Result that it won't have to re-allocate.
-  while (ElemCount--)
-    Result /= "..";
-  for (; PP; ++PP)
-    Result /= *PP;
-  return Result;
-}
-
-////////////////////////////////////////////////////////////////////////////
-// path.comparisons
-static int CompareRootName(PathParser *LHS, PathParser *RHS) {
-  if (!LHS->inRootName() && !RHS->inRootName())
-    return 0;
-
-  auto GetRootName = [](PathParser *Parser) -> string_view_t {
-    return Parser->inRootName() ? **Parser : "";
-  };
-  int res = GetRootName(LHS).compare(GetRootName(RHS));
-  ConsumeRootName(LHS);
-  ConsumeRootName(RHS);
-  return res;
-}
-
-static int CompareRootDir(PathParser *LHS, PathParser *RHS) {
-  if (!LHS->inRootDir() && RHS->inRootDir())
-    return -1;
-  else if (LHS->inRootDir() && !RHS->inRootDir())
-    return 1;
-  else {
-    ConsumeRootDir(LHS);
-    ConsumeRootDir(RHS);
-    return 0;
-  }
-}
-
-static int CompareRelative(PathParser *LHSPtr, PathParser *RHSPtr) {
-  auto &LHS = *LHSPtr;
-  auto &RHS = *RHSPtr;
-
-  int res;
-  while (LHS && RHS) {
-    if ((res = (*LHS).compare(*RHS)) != 0)
-      return res;
-    ++LHS;
-    ++RHS;
-  }
-  return 0;
-}
-
-static int CompareEndState(PathParser *LHS, PathParser *RHS) {
-  if (LHS->atEnd() && !RHS->atEnd())
-    return -1;
-  else if (!LHS->atEnd() && RHS->atEnd())
-    return 1;
-  return 0;
-}
-
-int path::__compare(string_view_t __s) const {
-  auto LHS = PathParser::CreateBegin(__pn_);
-  auto RHS = PathParser::CreateBegin(__s);
-  int res;
-
-  if ((res = CompareRootName(&LHS, &RHS)) != 0)
-    return res;
-
-  if ((res = CompareRootDir(&LHS, &RHS)) != 0)
-    return res;
-
-  if ((res = CompareRelative(&LHS, &RHS)) != 0)
-    return res;
-
-  return CompareEndState(&LHS, &RHS);
-}
-
-////////////////////////////////////////////////////////////////////////////
-// path.nonmembers
-size_t hash_value(const path& __p) noexcept {
-  auto PP = PathParser::CreateBegin(__p.native());
-  size_t hash_value = 0;
-  hash<string_view_t> hasher;
-  while (PP) {
-    hash_value = __hash_combine(hash_value, hasher(*PP));
-    ++PP;
-  }
-  return hash_value;
-}
-
-////////////////////////////////////////////////////////////////////////////
-// path.itr
-path::iterator path::begin() const {
-  auto PP = PathParser::CreateBegin(__pn_);
-  iterator it;
-  it.__path_ptr_ = this;
-  it.__state_ = static_cast<path::iterator::_ParserState>(PP.State);
-  it.__entry_ = PP.RawEntry;
-  it.__stashed_elem_.__assign_view(*PP);
-  return it;
-}
-
-path::iterator path::end() const {
-  iterator it{};
-  it.__state_ = path::iterator::_AtEnd;
-  it.__path_ptr_ = this;
-  return it;
-}
-
-path::iterator& path::iterator::__increment() {
-  PathParser PP(__path_ptr_->native(), __entry_, __state_);
-  ++PP;
-  __state_ = static_cast<_ParserState>(PP.State);
-  __entry_ = PP.RawEntry;
-  __stashed_elem_.__assign_view(*PP);
-  return *this;
-}
-
-path::iterator& path::iterator::__decrement() {
-  PathParser PP(__path_ptr_->native(), __entry_, __state_);
-  --PP;
-  __state_ = static_cast<_ParserState>(PP.State);
-  __entry_ = PP.RawEntry;
-  __stashed_elem_.__assign_view(*PP);
-  return *this;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-//                           directory entry definitions
-///////////////////////////////////////////////////////////////////////////////
-
-#ifndef _LIBCPP_WIN32API
-error_code directory_entry::__do_refresh() noexcept {
-  __data_.__reset();
-  error_code failure_ec;
-
-  StatT full_st;
-  file_status st = detail::posix_lstat(__p_, full_st, &failure_ec);
-  if (!status_known(st)) {
-    __data_.__reset();
-    return failure_ec;
-  }
-
-  if (!_VSTD_FS::exists(st) || !_VSTD_FS::is_symlink(st)) {
-    __data_.__cache_type_ = directory_entry::_RefreshNonSymlink;
-    __data_.__type_ = st.type();
-    __data_.__non_sym_perms_ = st.permissions();
-  } else { // we have a symlink
-    __data_.__sym_perms_ = st.permissions();
-    // Get the information about the linked entity.
-    // Ignore errors from stat, since we don't want errors regarding symlink
-    // resolution to be reported to the user.
-    error_code ignored_ec;
-    st = detail::posix_stat(__p_, full_st, &ignored_ec);
-
-    __data_.__type_ = st.type();
-    __data_.__non_sym_perms_ = st.permissions();
-
-    // If we failed to resolve the link, then only partially populate the
-    // cache.
-    if (!status_known(st)) {
-      __data_.__cache_type_ = directory_entry::_RefreshSymlinkUnresolved;
-      return error_code{};
-    }
-    // Otherwise, we resolved the link, potentially as not existing.
-    // That's OK.
-    __data_.__cache_type_ = directory_entry::_RefreshSymlink;
-  }
-
-  if (_VSTD_FS::is_regular_file(st))
-    __data_.__size_ = static_cast<uintmax_t>(full_st.st_size);
-
-  if (_VSTD_FS::exists(st)) {
-    __data_.__nlink_ = static_cast<uintmax_t>(full_st.st_nlink);
-
-    // Attempt to extract the mtime, and fail if it's not representable using
-    // file_time_type. For now we ignore the error, as we'll report it when
-    // the value is actually used.
-    error_code ignored_ec;
-    __data_.__write_time_ =
-        __extract_last_write_time(__p_, full_st, &ignored_ec);
-  }
-
-  return failure_ec;
-}
-#else
-error_code directory_entry::__do_refresh() noexcept {
-  __data_.__reset();
-  error_code failure_ec;
-
-  file_status st = _VSTD_FS::symlink_status(__p_, failure_ec);
-  if (!status_known(st)) {
-    __data_.__reset();
-    return failure_ec;
-  }
-
-  if (!_VSTD_FS::exists(st) || !_VSTD_FS::is_symlink(st)) {
-    __data_.__cache_type_ = directory_entry::_RefreshNonSymlink;
-    __data_.__type_ = st.type();
-    __data_.__non_sym_perms_ = st.permissions();
-  } else { // we have a symlink
-    __data_.__sym_perms_ = st.permissions();
-    // Get the information about the linked entity.
-    // Ignore errors from stat, since we don't want errors regarding symlink
-    // resolution to be reported to the user.
-    error_code ignored_ec;
-    st = _VSTD_FS::status(__p_, ignored_ec);
-
-    __data_.__type_ = st.type();
-    __data_.__non_sym_perms_ = st.permissions();
-
-    // If we failed to resolve the link, then only partially populate the
-    // cache.
-    if (!status_known(st)) {
-      __data_.__cache_type_ = directory_entry::_RefreshSymlinkUnresolved;
-      return error_code{};
-    }
-    __data_.__cache_type_ = directory_entry::_RefreshSymlink;
-  }
-
-  // FIXME: This is currently broken, and the implementation only a placeholder.
-  // We need to cache last_write_time, file_size, and hard_link_count here before
-  // the implementation actually works.
-
-  return failure_ec;
-}
-#endif
-
-#ifndef _LIBAUTO_UNDEF_VSTD_FS
-#pragma pop_macro("_VSTD_FS")
-#else
-#undef _VSTD
-#undef _LIBAUTO_UNDEF_VSTD_FS
-#endif
-}  // namespace android::hardware::automotive::filesystem
-/* clang-format on */
-
-#endif // defined(_LIBCPP_VERSION) && _LIBCPP_VERSION <= 8000
diff --git a/automotive/can/1.0/default/tests/fuzzer/Android.bp b/automotive/can/1.0/default/tests/fuzzer/Android.bp
index 16030d8..474b5a6 100644
--- a/automotive/can/1.0/default/tests/fuzzer/Android.bp
+++ b/automotive/can/1.0/default/tests/fuzzer/Android.bp
@@ -43,7 +43,6 @@
     ],
     static_libs: [
         "android.hardware.automotive.can@libnetdevice",
-        "android.hardware.automotive@libc++fs",
         "libnl++",
     ],
     fuzz_config: {
diff --git a/automotive/can/aidl/default/Android.bp b/automotive/can/aidl/default/Android.bp
index d44cb91..d4e2840 100644
--- a/automotive/can/aidl/default/Android.bp
+++ b/automotive/can/aidl/default/Android.bp
@@ -44,7 +44,6 @@
     ],
     static_libs: [
         "android.hardware.automotive.can@libnetdevice",
-        "android.hardware.automotive@libc++fs",
         "libnl++",
     ],
     vintf_fragments: ["android.hardware.automotive.can.xml"],
diff --git a/automotive/can/aidl/default/CanController.cpp b/automotive/can/aidl/default/CanController.cpp
index e4b5306..1435a02 100644
--- a/automotive/can/aidl/default/CanController.cpp
+++ b/automotive/can/aidl/default/CanController.cpp
@@ -23,13 +23,13 @@
 #include <android-base/format.h>
 #include <android-base/logging.h>
 
-#include <automotive/filesystem>
+#include <filesystem>
 #include <fstream>
 #include <regex>
 
 namespace aidl::android::hardware::automotive::can {
 
-namespace fs = ::android::hardware::automotive::filesystem;
+namespace fs = ::std::filesystem;
 
 namespace fsErrors {
 static const std::error_code ok;
diff --git a/automotive/evs/aidl/impl/default/resources/evs_mock_configuration.xml b/automotive/evs/aidl/impl/default/resources/evs_mock_configuration.xml
index 6cbc18e..af5b354 100644
--- a/automotive/evs/aidl/impl/default/resources/evs_mock_configuration.xml
+++ b/automotive/evs/aidl/impl/default/resources/evs_mock_configuration.xml
@@ -55,6 +55,30 @@
                 />
             </characteristics>
         </device>
+        <device id='/dev/video11' position='front'>
+            <caps>
+                <!-- list of supported controls -->
+                <supported_controls>
+                    <control name='BRIGHTNESS' min='0' max='255'/>
+                    <control name='CONTRAST' min='0' max='255'/>
+                </supported_controls>
+
+                <stream id='0' width='640'  height='360'  format='RGBA_8888' framerate='30'/>
+            </caps>
+
+            <!-- list of parameters -->
+            <characteristics>
+                <!-- Camera intrinsic calibration matrix. See
+                     https://developer.android.com/reference/android/hardware/camera2/CameraCharacteristics.html#LENS_INTRINSIC_CALIBRATION
+                -->
+                <parameter
+                    name='LENS_INTRINSIC_CALIBRATION'
+                    type='float'
+                    size='5'
+                    value='0.0,0.0,0.0,0.0,0.0'
+                />
+            </characteristics>
+        </device>
     </camera>
     <display>
         <device id='display0' position='driver'>
diff --git a/automotive/vehicle/aidl/aidl_test/Android.bp b/automotive/vehicle/aidl/aidl_test/Android.bp
index ea6a710..f517df8 100644
--- a/automotive/vehicle/aidl/aidl_test/Android.bp
+++ b/automotive/vehicle/aidl/aidl_test/Android.bp
@@ -40,7 +40,7 @@
 cc_test {
     name: "VehiclePropertyAnnotationCppTest",
     srcs: ["VehiclePropertyAnnotationCppTest.cpp"],
-    header_libs: ["IVehicleGeneratedHeaders"],
+    header_libs: ["IVehicleGeneratedHeaders-V3"],
     defaults: ["VehicleHalInterfaceDefaults"],
     test_suites: ["general-tests"],
 }
diff --git a/automotive/vehicle/aidl/emu_metadata/android.hardware.automotive.vehicle-types-meta.json b/automotive/vehicle/aidl/emu_metadata/android.hardware.automotive.vehicle-types-meta.json
index 0dea16b..de0e398 100644
--- a/automotive/vehicle/aidl/emu_metadata/android.hardware.automotive.vehicle-types-meta.json
+++ b/automotive/vehicle/aidl/emu_metadata/android.hardware.automotive.vehicle-types-meta.json
@@ -521,7 +521,7 @@
             {
                 "name": "PER_DISPLAY_BRIGHTNESS",
                 "value": 289475076,
-                "description": "Property to represent brightness of the displays which are controlled separately.\nSome cars have one or more displays whose brightness is controlled separately and this property is to inform the brightness of each passenger display. In cars where all displays' brightness is controlled together, they must use DISPLAY_BRIGHTNESS.\nOnly one of DISPLAY_BRIGHTNESS and PER_DISPLAY_BRIGHTNESS should be implemented. If both are available, PER_DISPLAY_BRIGHTNESS is used by AAOS.\nThe display port uniquely identifies a physical connector on the device for display output, ranging from 0 to 255.\nWriting this property must cause an on property change event that contains the same [display port, brightness] tuple even if the new display brightness is the same as the current value.\nTo get the display brightness for a specific display port, the GetValueRequest must contain a VehiclePropValue, which contains one int32Value: displayPort. Getting this property without specifying the the display port is undefined behavior.\nint32Values[0] : display port int32Values[1] : brightness"
+                "description": "Property to represent brightness of the displays which are controlled separately.\nSome cars have one or more displays whose brightness is controlled separately and this property is to inform the brightness of each passenger display. In cars where all displays' brightness is controlled together, they must use DISPLAY_BRIGHTNESS.\nOnly one of DISPLAY_BRIGHTNESS and PER_DISPLAY_BRIGHTNESS should be implemented. If both are available, PER_DISPLAY_BRIGHTNESS is used by AAOS.\nIf this is supported, PER_DISPLAY_MAX_BRIGHTNESS must be supported to represent the max display brightness for each display. Otherwise, the max display brightness is by default 1. The VehicleAreaConfig.maxInt32Value must not be used to represent max display brightness, because maxInt32Value is defined to be the max value for all the elements inside the integer value, which includes display port and brightness. So it is not meaningful.\nThe display port uniquely identifies a physical connector on the device for display output, ranging from 0 to 255.\nWriting this property must cause an on property change event that contains the same [display port, brightness] tuple even if the new display brightness is the same as the current value.\nTo get the display brightness for a specific display port, the GetValueRequest must contain a VehiclePropValue, which contains one int32Value: displayPort. Getting this property without specifying the the display port is undefined behavior.\nint32Values[0] : display port int32Values[1] : brightness"
             },
             {
                 "name": "Valet mode enabled",
@@ -1364,6 +1364,11 @@
                 "description": "Reports current state of CarEvsService types.\nInforms other components of current state of each CarEvsService service type with values defined in CameraServiceState. CarEvsService will update this property whenever a service type transitions into a new state.\nint32[0]: Current state of REARVIEW service type. int32[1]: Current state of SURROUNDVIEW service type. int32[2]: Current state of FRONTVIEW service type. int32[3]: Current state of LEFTVIEW service type. int32[4]: Current state of RIGHTVIEW service type. int32[5]: Current state of DRIVERVIEW service type. int32[6]: Current state of FRONT_PASSENGERVIEW service type. int32[7]: Current state of REAR_PASSENGERVIEW service type."
             },
             {
+                "name": "PER_DISPLAY_MAX_BRIGHTNESS",
+                "value": 289476430,
+                "description": "Property to represent max brightness of the displays which are controlled separately.\nThis is only used if PER_DISPLAY_BRIGHTNESS is supported.\nThe display port uniquely identifies a physical connector on the device for display output, ranging from 0 to 255.\nint32Values[0] : display port number int32Values[1] : max brightness for display port number specified at int32Values[0] int32Values[2] : display port number int32Values[3] : max brightness for display port number specified at int32Values[2] ..."
+            },
+            {
                 "name": "AUTOMATIC_EMERGENCY_BRAKING_ENABLED",
                 "value": 287313920,
                 "description": "Enable or disable Automatic Emergency Braking (AEB).\nSet true to enable AEB and false to disable AEB. When AEB is enabled, the ADAS system in the vehicle should be turned on and monitoring to avoid potential collisions. This property should apply for higher speed applications only. For enabling low speed automatic emergency braking, LOW_SPEED_AUTOMATIC_EMERGENCY_BRAKING_ENABLED should be used.\nIn general, AUTOMATIC_EMERGENCY_BRAKING_ENABLED should always return true or false. If the feature is not available due to some temporary state, such as the vehicle speed being too low, that information must be conveyed through the ErrorState values in the AUTOMATIC_EMERGENCY_BRAKING_STATE property.\nThis property is defined as VehiclePropertyAccess.READ_WRITE, but OEMs have the option to implement it as VehiclePropertyAccess.READ only."
diff --git a/automotive/vehicle/aidl/generated_lib/4/cpp/AccessForVehicleProperty.h b/automotive/vehicle/aidl/generated_lib/4/cpp/AccessForVehicleProperty.h
index 51a3025..6d07fe5 100644
--- a/automotive/vehicle/aidl/generated_lib/4/cpp/AccessForVehicleProperty.h
+++ b/automotive/vehicle/aidl/generated_lib/4/cpp/AccessForVehicleProperty.h
@@ -263,6 +263,7 @@
         {VehicleProperty::CLUSTER_HEARTBEAT, VehiclePropertyAccess::WRITE},
         {VehicleProperty::VEHICLE_DRIVING_AUTOMATION_CURRENT_LEVEL, VehiclePropertyAccess::READ},
         {VehicleProperty::CAMERA_SERVICE_CURRENT_STATE, VehiclePropertyAccess::WRITE},
+        {VehicleProperty::PER_DISPLAY_MAX_BRIGHTNESS, VehiclePropertyAccess::READ},
         {VehicleProperty::AUTOMATIC_EMERGENCY_BRAKING_ENABLED, VehiclePropertyAccess::READ_WRITE},
         {VehicleProperty::AUTOMATIC_EMERGENCY_BRAKING_STATE, VehiclePropertyAccess::READ},
         {VehicleProperty::FORWARD_COLLISION_WARNING_ENABLED, VehiclePropertyAccess::READ_WRITE},
diff --git a/automotive/vehicle/aidl/generated_lib/4/cpp/ChangeModeForVehicleProperty.h b/automotive/vehicle/aidl/generated_lib/4/cpp/ChangeModeForVehicleProperty.h
index 60e9a72..5ecee95 100644
--- a/automotive/vehicle/aidl/generated_lib/4/cpp/ChangeModeForVehicleProperty.h
+++ b/automotive/vehicle/aidl/generated_lib/4/cpp/ChangeModeForVehicleProperty.h
@@ -263,6 +263,7 @@
         {VehicleProperty::CLUSTER_HEARTBEAT, VehiclePropertyChangeMode::ON_CHANGE},
         {VehicleProperty::VEHICLE_DRIVING_AUTOMATION_CURRENT_LEVEL, VehiclePropertyChangeMode::ON_CHANGE},
         {VehicleProperty::CAMERA_SERVICE_CURRENT_STATE, VehiclePropertyChangeMode::ON_CHANGE},
+        {VehicleProperty::PER_DISPLAY_MAX_BRIGHTNESS, VehiclePropertyChangeMode::STATIC},
         {VehicleProperty::AUTOMATIC_EMERGENCY_BRAKING_ENABLED, VehiclePropertyChangeMode::ON_CHANGE},
         {VehicleProperty::AUTOMATIC_EMERGENCY_BRAKING_STATE, VehiclePropertyChangeMode::ON_CHANGE},
         {VehicleProperty::FORWARD_COLLISION_WARNING_ENABLED, VehiclePropertyChangeMode::ON_CHANGE},
diff --git a/automotive/vehicle/aidl/generated_lib/4/cpp/VersionForVehicleProperty.h b/automotive/vehicle/aidl/generated_lib/4/cpp/VersionForVehicleProperty.h
index 0e80bd8..8b9c1bd 100644
--- a/automotive/vehicle/aidl/generated_lib/4/cpp/VersionForVehicleProperty.h
+++ b/automotive/vehicle/aidl/generated_lib/4/cpp/VersionForVehicleProperty.h
@@ -262,6 +262,7 @@
         {VehicleProperty::CLUSTER_HEARTBEAT, 3},
         {VehicleProperty::VEHICLE_DRIVING_AUTOMATION_CURRENT_LEVEL, 3},
         {VehicleProperty::CAMERA_SERVICE_CURRENT_STATE, 3},
+        {VehicleProperty::PER_DISPLAY_MAX_BRIGHTNESS, 3},
         {VehicleProperty::AUTOMATIC_EMERGENCY_BRAKING_ENABLED, 2},
         {VehicleProperty::AUTOMATIC_EMERGENCY_BRAKING_STATE, 2},
         {VehicleProperty::FORWARD_COLLISION_WARNING_ENABLED, 2},
diff --git a/automotive/vehicle/aidl/generated_lib/4/java/AccessForVehicleProperty.java b/automotive/vehicle/aidl/generated_lib/4/java/AccessForVehicleProperty.java
index afb6cab..e9f35a5 100644
--- a/automotive/vehicle/aidl/generated_lib/4/java/AccessForVehicleProperty.java
+++ b/automotive/vehicle/aidl/generated_lib/4/java/AccessForVehicleProperty.java
@@ -256,6 +256,7 @@
         Map.entry(VehicleProperty.CLUSTER_HEARTBEAT, VehiclePropertyAccess.WRITE),
         Map.entry(VehicleProperty.VEHICLE_DRIVING_AUTOMATION_CURRENT_LEVEL, VehiclePropertyAccess.READ),
         Map.entry(VehicleProperty.CAMERA_SERVICE_CURRENT_STATE, VehiclePropertyAccess.WRITE),
+        Map.entry(VehicleProperty.PER_DISPLAY_MAX_BRIGHTNESS, VehiclePropertyAccess.READ),
         Map.entry(VehicleProperty.AUTOMATIC_EMERGENCY_BRAKING_ENABLED, VehiclePropertyAccess.READ_WRITE),
         Map.entry(VehicleProperty.AUTOMATIC_EMERGENCY_BRAKING_STATE, VehiclePropertyAccess.READ),
         Map.entry(VehicleProperty.FORWARD_COLLISION_WARNING_ENABLED, VehiclePropertyAccess.READ_WRITE),
diff --git a/automotive/vehicle/aidl/generated_lib/4/java/ChangeModeForVehicleProperty.java b/automotive/vehicle/aidl/generated_lib/4/java/ChangeModeForVehicleProperty.java
index 12aff40..3fb52b7 100644
--- a/automotive/vehicle/aidl/generated_lib/4/java/ChangeModeForVehicleProperty.java
+++ b/automotive/vehicle/aidl/generated_lib/4/java/ChangeModeForVehicleProperty.java
@@ -256,6 +256,7 @@
         Map.entry(VehicleProperty.CLUSTER_HEARTBEAT, VehiclePropertyChangeMode.ON_CHANGE),
         Map.entry(VehicleProperty.VEHICLE_DRIVING_AUTOMATION_CURRENT_LEVEL, VehiclePropertyChangeMode.ON_CHANGE),
         Map.entry(VehicleProperty.CAMERA_SERVICE_CURRENT_STATE, VehiclePropertyChangeMode.ON_CHANGE),
+        Map.entry(VehicleProperty.PER_DISPLAY_MAX_BRIGHTNESS, VehiclePropertyChangeMode.STATIC),
         Map.entry(VehicleProperty.AUTOMATIC_EMERGENCY_BRAKING_ENABLED, VehiclePropertyChangeMode.ON_CHANGE),
         Map.entry(VehicleProperty.AUTOMATIC_EMERGENCY_BRAKING_STATE, VehiclePropertyChangeMode.ON_CHANGE),
         Map.entry(VehicleProperty.FORWARD_COLLISION_WARNING_ENABLED, VehiclePropertyChangeMode.ON_CHANGE),
diff --git a/automotive/vehicle/aidl_property/Android.bp b/automotive/vehicle/aidl_property/Android.bp
index 2aaf6b6..b8a978b 100644
--- a/automotive/vehicle/aidl_property/Android.bp
+++ b/automotive/vehicle/aidl_property/Android.bp
@@ -28,7 +28,7 @@
         // This HAL was originally part of android.hardware.automotive.vehicle
         "android/hardware/automotive/vehicle/*.aidl",
     ],
-    frozen: true,
+    frozen: false,
     stability: "vintf",
     backend: {
         cpp: {
diff --git a/automotive/vehicle/aidl_property/aidl_api/android.hardware.automotive.vehicle.property/current/android/hardware/automotive/vehicle/VehicleProperty.aidl b/automotive/vehicle/aidl_property/aidl_api/android.hardware.automotive.vehicle.property/current/android/hardware/automotive/vehicle/VehicleProperty.aidl
index be8d3ac..4c5dad2 100644
--- a/automotive/vehicle/aidl_property/aidl_api/android.hardware.automotive.vehicle.property/current/android/hardware/automotive/vehicle/VehicleProperty.aidl
+++ b/automotive/vehicle/aidl_property/aidl_api/android.hardware.automotive.vehicle.property/current/android/hardware/automotive/vehicle/VehicleProperty.aidl
@@ -262,6 +262,7 @@
   CLUSTER_HEARTBEAT = (((0x0F4B + android.hardware.automotive.vehicle.VehiclePropertyGroup.SYSTEM) + android.hardware.automotive.vehicle.VehicleArea.GLOBAL) + android.hardware.automotive.vehicle.VehiclePropertyType.MIXED) /* 299896651 */,
   VEHICLE_DRIVING_AUTOMATION_CURRENT_LEVEL = (((0x0F4C + android.hardware.automotive.vehicle.VehiclePropertyGroup.SYSTEM) + android.hardware.automotive.vehicle.VehicleArea.GLOBAL) + android.hardware.automotive.vehicle.VehiclePropertyType.INT32) /* 289410892 */,
   CAMERA_SERVICE_CURRENT_STATE = (((0x0F4D + android.hardware.automotive.vehicle.VehiclePropertyGroup.SYSTEM) + android.hardware.automotive.vehicle.VehicleArea.GLOBAL) + android.hardware.automotive.vehicle.VehiclePropertyType.INT32_VEC) /* 289476429 */,
+  PER_DISPLAY_MAX_BRIGHTNESS = (((0x0F4E + android.hardware.automotive.vehicle.VehiclePropertyGroup.SYSTEM) + android.hardware.automotive.vehicle.VehicleArea.GLOBAL) + android.hardware.automotive.vehicle.VehiclePropertyType.INT32_VEC) /* 289476430 */,
   AUTOMATIC_EMERGENCY_BRAKING_ENABLED = (((0x1000 + android.hardware.automotive.vehicle.VehiclePropertyGroup.SYSTEM) + android.hardware.automotive.vehicle.VehicleArea.GLOBAL) + android.hardware.automotive.vehicle.VehiclePropertyType.BOOLEAN) /* 287313920 */,
   AUTOMATIC_EMERGENCY_BRAKING_STATE = (((0x1001 + android.hardware.automotive.vehicle.VehiclePropertyGroup.SYSTEM) + android.hardware.automotive.vehicle.VehicleArea.GLOBAL) + android.hardware.automotive.vehicle.VehiclePropertyType.INT32) /* 289411073 */,
   FORWARD_COLLISION_WARNING_ENABLED = (((0x1002 + android.hardware.automotive.vehicle.VehiclePropertyGroup.SYSTEM) + android.hardware.automotive.vehicle.VehicleArea.GLOBAL) + android.hardware.automotive.vehicle.VehiclePropertyType.BOOLEAN) /* 287313922 */,
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/AutomaticEmergencyBrakingState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/AutomaticEmergencyBrakingState.aidl
index 540c663..1421f89 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/AutomaticEmergencyBrakingState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/AutomaticEmergencyBrakingState.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used to enumerate the state of Automatic Emergency Braking (AEB).
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/BlindSpotWarningState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/BlindSpotWarningState.aidl
index 3f567c0..3c85f29 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/BlindSpotWarningState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/BlindSpotWarningState.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used to enumerate the state of Blind Spot Warning State (BSW).
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/CrossTrafficMonitoringWarningState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/CrossTrafficMonitoringWarningState.aidl
index 05be65d..85428b1 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/CrossTrafficMonitoringWarningState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/CrossTrafficMonitoringWarningState.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used to enumerate the state of Cross Traffic Monitoring Warning system.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/CruiseControlCommand.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/CruiseControlCommand.aidl
index 18e1405..ab745ce 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/CruiseControlCommand.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/CruiseControlCommand.aidl
@@ -20,6 +20,9 @@
  * Used to enumerate the Cruise Control (CC) commands.
  *
  * This enum could be extended in future releases to include additional feature states.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/CruiseControlState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/CruiseControlState.aidl
index 0e55e00..b410e41 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/CruiseControlState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/CruiseControlState.aidl
@@ -20,6 +20,9 @@
  * Used to enumerate the current state of Cruise Control (CC).
  *
  * This enum could be extended in future releases to include additional feature states.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/CruiseControlType.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/CruiseControlType.aidl
index 2367b82..ebae16d 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/CruiseControlType.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/CruiseControlType.aidl
@@ -20,6 +20,9 @@
  * Used to enumerate the current type of Cruise Control (CC).
  *
  * This enum could be extended in future releases to include additional feature states.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/DriverDistractionState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/DriverDistractionState.aidl
index f350a6c..d03431d 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/DriverDistractionState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/DriverDistractionState.aidl
@@ -20,6 +20,9 @@
  * Used to enumerate the current state of driver distraction monitoring.
  *
  * This enum could be extended in future releases to include additional feature states.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/DriverDistractionWarning.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/DriverDistractionWarning.aidl
index a4b1984..e145be2 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/DriverDistractionWarning.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/DriverDistractionWarning.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used to enumerate the current warning state of the driver distraction monitoring system.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/DriverDrowsinessAttentionState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/DriverDrowsinessAttentionState.aidl
index d2aec1f..f94479b 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/DriverDrowsinessAttentionState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/DriverDrowsinessAttentionState.aidl
@@ -20,6 +20,9 @@
  * Used to enumerate the current state of driver drowsiness and attention monitoring.
  *
  * This enum could be extended in future releases to include additional feature states.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/DriverDrowsinessAttentionWarning.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/DriverDrowsinessAttentionWarning.aidl
index 53b66b9..efa12a4 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/DriverDrowsinessAttentionWarning.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/DriverDrowsinessAttentionWarning.aidl
@@ -19,6 +19,9 @@
 /**
  * Used to enumerate the current warning state of the driver drowsiness and attention monitoring
  * system.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ElectronicStabilityControlState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ElectronicStabilityControlState.aidl
index 006bbf2..bc9148a 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ElectronicStabilityControlState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ElectronicStabilityControlState.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used to enumerate the state of Electronic Stability Control (ESC).
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ElectronicTollCollectionCardStatus.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ElectronicTollCollectionCardStatus.aidl
index 94209ba..ce4def1 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ElectronicTollCollectionCardStatus.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ElectronicTollCollectionCardStatus.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used by ELECTRONIC_TOLL_COLLECTION_CARD_STATUS.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ElectronicTollCollectionCardType.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ElectronicTollCollectionCardType.aidl
index 46c5f48..0be981c 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ElectronicTollCollectionCardType.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ElectronicTollCollectionCardType.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used by ELECTRONIC_TOLL_COLLECTION_CARD_TYPE.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/EmergencyLaneKeepAssistState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/EmergencyLaneKeepAssistState.aidl
index 302b9af..bbc8d3b 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/EmergencyLaneKeepAssistState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/EmergencyLaneKeepAssistState.aidl
@@ -20,6 +20,9 @@
  * Used by emergency lane keep assist to enumerate state.
  *
  * This enum could be extended in future releases to include additional feature states.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ErrorState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ErrorState.aidl
index ba44672..5b13ec9 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ErrorState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ErrorState.aidl
@@ -19,6 +19,9 @@
 /**
  * Used to enumerate the possible error states. For version 2 of this interface, ErrorState is used
  * by ADAS STATE properties, but its use may be expanded in future releases.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/EvChargeState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/EvChargeState.aidl
index e095fc4..ec533e1 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/EvChargeState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/EvChargeState.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used by EV charging properties to enumerate the current state of the battery charging.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/EvRegenerativeBrakingState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/EvRegenerativeBrakingState.aidl
index 4382287..15372f7 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/EvRegenerativeBrakingState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/EvRegenerativeBrakingState.aidl
@@ -19,6 +19,9 @@
 /**
  * Used by the regenerative braking property to enumerate the current state
  * of the regenerative braking.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/EvStoppingMode.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/EvStoppingMode.aidl
index 8c5ac46..c82b8a8 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/EvStoppingMode.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/EvStoppingMode.aidl
@@ -20,6 +20,9 @@
  * Used by EV_STOPPING_MODE to enumerate the current state of the stopping mode.
  *
  * This enum may be extended to include more states in the future.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ForwardCollisionWarningState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ForwardCollisionWarningState.aidl
index b20cf25..69dce89 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ForwardCollisionWarningState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ForwardCollisionWarningState.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used to enumerate the state of Forward Collision Warning State (FCW).
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/HandsOnDetectionDriverState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/HandsOnDetectionDriverState.aidl
index 4a36999..c9f9322 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/HandsOnDetectionDriverState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/HandsOnDetectionDriverState.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used to enumerate the current driver state of Hands On Detection (HOD).
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/HandsOnDetectionWarning.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/HandsOnDetectionWarning.aidl
index c1a58ce..dd6a78f 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/HandsOnDetectionWarning.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/HandsOnDetectionWarning.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used to enumerate the current warning state of Hands On Detection (HOD).
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ImpactSensorLocation.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ImpactSensorLocation.aidl
index 0fc1a50..b0a6a60 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ImpactSensorLocation.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/ImpactSensorLocation.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used to enumerate the various impact sensor locations on the car.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LaneCenteringAssistCommand.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LaneCenteringAssistCommand.aidl
index d8b0e65..bf8a6df 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LaneCenteringAssistCommand.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LaneCenteringAssistCommand.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used by Lane Centering Assist (LCA) to enumerate commands.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LaneCenteringAssistState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LaneCenteringAssistState.aidl
index 340a669..eb8e9c8 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LaneCenteringAssistState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LaneCenteringAssistState.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used to enumerate the state of Lane Centering Assist (LCA).
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LaneDepartureWarningState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LaneDepartureWarningState.aidl
index c12c5765..21eeaa5 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LaneDepartureWarningState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LaneDepartureWarningState.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used to enumerate the state of Lane Departure Warning (LDW).
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LaneKeepAssistState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LaneKeepAssistState.aidl
index c1c15a0..8c77086 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LaneKeepAssistState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LaneKeepAssistState.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used to enumerate the state of Lane Keep Assist (LKA).
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LowSpeedAutomaticEmergencyBrakingState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LowSpeedAutomaticEmergencyBrakingState.aidl
index 978da25..c2cb51a 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LowSpeedAutomaticEmergencyBrakingState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LowSpeedAutomaticEmergencyBrakingState.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used to enumerate the state of Low Speed Automatic Emergency Braking.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LowSpeedCollisionWarningState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LowSpeedCollisionWarningState.aidl
index 028a2d9..fd410d8 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LowSpeedCollisionWarningState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/LowSpeedCollisionWarningState.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used to enumerate the state of Low Speed Collision Warning State.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/TrailerState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/TrailerState.aidl
index ef65374..d31fb25 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/TrailerState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/TrailerState.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used to enumerate the current state of VehicleProperty#TRAILER_PRESENT.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleAirbagLocation.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleAirbagLocation.aidl
index e4c43f7..a029ed8 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleAirbagLocation.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleAirbagLocation.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used to enumerate the various airbag locations per seat.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleAutonomousState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleAutonomousState.aidl
index 3860e7f..4a48e97 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleAutonomousState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleAutonomousState.aidl
@@ -19,6 +19,9 @@
 /**
  * Used to enumerate the various level of automation that can be expressed by the
  * VEHICLE_DRIVING_AUTOMATION_CURRENT_LEVEL property.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleGear.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleGear.aidl
index 40e492e..2fd94c7 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleGear.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleGear.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Various gears which can be selected by user and chosen in system.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleHvacFanDirection.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleHvacFanDirection.aidl
index f5b77de..dc1379d 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleHvacFanDirection.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleHvacFanDirection.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Bit flags for fan direction
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleIgnitionState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleIgnitionState.aidl
index 2338008..bcdc3eb 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleIgnitionState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleIgnitionState.aidl
@@ -16,6 +16,12 @@
 
 package android.hardware.automotive.vehicle;
 
+/**
+ * Used to enumerate the different states the ignition of the vehicle can be in.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
+ */
 @VintfStability
 @Backing(type="int")
 enum VehicleIgnitionState {
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleLightState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleLightState.aidl
index ede20b7..e7ed13c 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleLightState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleLightState.aidl
@@ -21,6 +21,9 @@
  *
  * Most XXX_LIGHTS_STATE properties will only report ON and OFF states.  Only
  * the HEADLIGHTS_STATE property will report DAYTIME_RUNNING.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleLightSwitch.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleLightSwitch.aidl
index 247e731..d147404 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleLightSwitch.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleLightSwitch.aidl
@@ -22,6 +22,9 @@
  * XXX_LIGHTS_SWITCH properties report the switch settings that the user
  * selects.  The switch setting may be decoupled from the state reported if the
  * user selects AUTOMATIC.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleOilLevel.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleOilLevel.aidl
index 3c722ba..acc4201 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleOilLevel.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleOilLevel.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used to enumerate the current level of VehicleProperty#ENGINE_OIL_LEVEL.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleProperty.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleProperty.aidl
index e54c179..0863adf 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleProperty.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleProperty.aidl
@@ -1757,6 +1757,12 @@
      * implemented. If both are available, PER_DISPLAY_BRIGHTNESS is used by
      * AAOS.
      *
+     * If this is supported, PER_DISPLAY_MAX_BRIGHTNESS must be supported to represent the max
+     * display brightness for each display. Otherwise, the max display brightness is by default 1.
+     * The VehicleAreaConfig.maxInt32Value must not be used to represent max display brightness,
+     * because maxInt32Value is defined to be the max value for all the elements inside the integer
+     * value, which includes display port and brightness. So it is not meaningful.
+     *
      * The display port uniquely identifies a physical connector on the device
      * for display output, ranging from 0 to 255.
      *
@@ -5214,6 +5220,27 @@
     CAMERA_SERVICE_CURRENT_STATE = 0x0F4D + VehiclePropertyGroup.SYSTEM + VehicleArea.GLOBAL
             + VehiclePropertyType.INT32_VEC,
 
+    /**
+     * Property to represent max brightness of the displays which are controlled separately.
+     *
+     * This is only used if PER_DISPLAY_BRIGHTNESS is supported.
+     *
+     * The display port uniquely identifies a physical connector on the device
+     * for display output, ranging from 0 to 255.
+     *
+     * int32Values[0] : display port number
+     * int32Values[1] : max brightness for display port number specified at int32Values[0]
+     * int32Values[2] : display port number
+     * int32Values[3] : max brightness for display port number specified at int32Values[2]
+     * ...
+     *
+     * @change_mode VehiclePropertyChangeMode.STATIC
+     * @access VehiclePropertyAccess.READ
+     * @version 3
+     */
+    PER_DISPLAY_MAX_BRIGHTNESS = 0x0F4E + VehiclePropertyGroup.SYSTEM + VehicleArea.GLOBAL
+            + VehiclePropertyType.INT32_VEC,
+
     /***********************************************************************************************
      * Start of ADAS Properties
      *
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleSeatOccupancyState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleSeatOccupancyState.aidl
index 3a08a51..266d3f9 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleSeatOccupancyState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleSeatOccupancyState.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used by seat occupancy to enumerate the current occupancy state of the seat.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/WindshieldWipersState.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/WindshieldWipersState.aidl
index 820fcc8..953a80d 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/WindshieldWipersState.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/WindshieldWipersState.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used to enumerate the current state of VehicleProperty#WINDSHIELD_WIPERS_STATE.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/WindshieldWipersSwitch.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/WindshieldWipersSwitch.aidl
index 911d7eb..4ef16b5 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/WindshieldWipersSwitch.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/WindshieldWipersSwitch.aidl
@@ -18,6 +18,9 @@
 
 /**
  * Used to enumerate the current position of VehicleProperty#WINDSHIELD_WIPERS_SWITCH.
+ *
+ * Through the use of VehicleAreaConfig#supportedEnumValues, OEMs may specify they only support a
+ * subset of the enums that are defined here.
  */
 @VintfStability
 @Backing(type="int")
diff --git a/biometrics/fingerprint/aidl/default/FakeFingerprintEngine.cpp b/biometrics/fingerprint/aidl/default/FakeFingerprintEngine.cpp
index 8b8d046..67eb837 100644
--- a/biometrics/fingerprint/aidl/default/FakeFingerprintEngine.cpp
+++ b/biometrics/fingerprint/aidl/default/FakeFingerprintEngine.cpp
@@ -544,6 +544,10 @@
 
 void FakeFingerprintEngine::waitForFingerDown(ISessionCallback* cb,
                                               const std::future<void>& cancel) {
+    if (mFingerIsDown) {
+        LOG(WARNING) << "waitForFingerDown: mFingerIsDown==true already!";
+    }
+
     while (!mFingerIsDown) {
         if (shouldCancel(cancel)) {
             LOG(ERROR) << "waitForFingerDown, Fail: cancel";
diff --git a/bluetooth/aidl/default/net_bluetooth_mgmt.cpp b/bluetooth/aidl/default/net_bluetooth_mgmt.cpp
index 0699781..24693ef 100644
--- a/bluetooth/aidl/default/net_bluetooth_mgmt.cpp
+++ b/bluetooth/aidl/default/net_bluetooth_mgmt.cpp
@@ -161,6 +161,16 @@
       struct mgmt_ev_read_index_list* data =
           (struct mgmt_ev_read_index_list*)ev.data;
 
+      // Prefer the exact hci_interface
+      for (int i = 0; i < data->num_controllers; i++) {
+        if (data->index[i] == hci_interface) {
+          ALOGI("hci interface %d found", data->index[i]);
+          ret = data->index[i];
+          goto end;
+        }
+      }
+
+      // Accept a larger one if we can't find the exact one
       for (int i = 0; i < data->num_controllers; i++) {
         if (data->index[i] >= hci_interface) {
           ALOGI("hci interface %d found", data->index[i]);
@@ -173,7 +183,7 @@
     // Received [Index Added] event.
     if (ev.opcode == MGMT_EV_INDEX_ADDED && ev.index == hci_interface) {
       ALOGI("hci interface %d added", hci_interface);
-      ret = 0;
+      ret = hci_interface;
       goto end;
     }
   }
@@ -253,9 +263,9 @@
   rfkill(1);
 
   // Wait for the HCI interface to complete initialization or to come online.
-  hci_interface = waitHciDev(hci_interface);
-  if (hci_interface < 0) {
-    ALOGE("hci interface not found");
+  int hci = waitHciDev(hci_interface);
+  if (hci < 0) {
+    ALOGE("hci interface %d not found", hci_interface);
     return -1;
   }
 
@@ -268,7 +278,7 @@
 
   struct sockaddr_hci hci_addr = {
       .hci_family = AF_BLUETOOTH,
-      .hci_dev = static_cast<uint16_t>(hci_interface),
+      .hci_dev = static_cast<uint16_t>(hci),
       .hci_channel = HCI_CHANNEL_USER,
   };
 
@@ -279,7 +289,7 @@
     return -1;
   }
 
-  ALOGI("hci interface %d ready", hci_interface);
+  ALOGI("hci interface %d ready", hci);
   bt_fd_ = fd;
   return fd;
 }
diff --git a/bluetooth/audio/aidl/default/LeAudioOffloadAudioProvider.cpp b/bluetooth/audio/aidl/default/LeAudioOffloadAudioProvider.cpp
index 5002a1a..6783c0f 100644
--- a/bluetooth/audio/aidl/default/LeAudioOffloadAudioProvider.cpp
+++ b/bluetooth/audio/aidl/default/LeAudioOffloadAudioProvider.cpp
@@ -30,6 +30,8 @@
 
 constexpr uint8_t kLeAudioDirectionSink = 0x01;
 constexpr uint8_t kLeAudioDirectionSource = 0x02;
+constexpr uint8_t kIsoDataPathHci = 0x00;
+constexpr uint8_t kIsoDataPathPlatformDefault = 0x01;
 
 const std::map<CodecSpecificConfigurationLtv::SamplingFrequency, uint32_t>
     freq_to_support_bitmask_map = {
@@ -85,6 +87,7 @@
 std::map<int32_t, CodecSpecificConfigurationLtv::SamplingFrequency>
     sampling_freq_map = {
         {16000, CodecSpecificConfigurationLtv::SamplingFrequency::HZ16000},
+        {24000, CodecSpecificConfigurationLtv::SamplingFrequency::HZ24000},
         {48000, CodecSpecificConfigurationLtv::SamplingFrequency::HZ48000},
         {96000, CodecSpecificConfigurationLtv::SamplingFrequency::HZ96000},
 };
@@ -175,12 +178,13 @@
     if (!metadata.has_value()) continue;
     if (metadata.value().getTag() == MetadataLtv::Tag::preferredAudioContexts) {
       // Check all pref audio context to see if anything matched
-      auto& context = metadata.value()
-                          .get<MetadataLtv::Tag::preferredAudioContexts>()
-                          .values;
-      if (setting_context.bitmask & context.bitmask) {
+      auto& prefer_context =
+          metadata.value()
+              .get<MetadataLtv::Tag::preferredAudioContexts>()
+              .values;
+      if (setting_context.bitmask & prefer_context.bitmask) {
         // New mask with matched capability
-        setting_context.bitmask &= context.bitmask;
+        setting_context.bitmask &= prefer_context.bitmask;
         return true;
       }
     }
@@ -219,8 +223,9 @@
     /*cfg_channel*/,
     CodecSpecificCapabilitiesLtv::SupportedAudioChannelCounts&
     /*capability_channel*/) {
+  // Simply ignore.
+  // Later can use additional capabilities to match requirement.
   bool isMatched = true;
-  // TODO: how to match?
   return isMatched;
 }
 
@@ -317,22 +322,34 @@
   return true;
 }
 
-bool LeAudioOffloadAudioProvider::isMatchedAseConfiguration(
-    LeAudioAseConfiguration setting_cfg,
-    LeAudioAseConfiguration requirement_cfg) {
+bool isMonoConfig(
+    CodecSpecificConfigurationLtv::AudioChannelAllocation allocation) {
+  auto channel_count = std::bitset<32>(allocation.bitmask);
+  return (channel_count.count() <= 1);
+}
+
+bool LeAudioOffloadAudioProvider::filterMatchedAseConfiguration(
+    LeAudioAseConfiguration& setting_cfg,
+    const LeAudioAseConfiguration& requirement_cfg) {
   // Check matching for codec configuration <=> requirement ASE codec
   // Also match if no CodecId requirement
   if (requirement_cfg.codecId.has_value()) {
     if (!setting_cfg.codecId.has_value()) return false;
     if (!isMatchedValidCodec(setting_cfg.codecId.value(),
                              requirement_cfg.codecId.value())) {
+      LOG(WARNING) << __func__ << ": Doesn't match valid codec, cfg = "
+                   << setting_cfg.codecId.value().toString()
+                   << ", req = " << requirement_cfg.codecId.value().toString();
       return false;
     }
   }
 
-  if (requirement_cfg.targetLatency ==
-          LeAudioAseConfiguration::TargetLatency::UNDEFINED ||
+  if (requirement_cfg.targetLatency !=
+          LeAudioAseConfiguration::TargetLatency::UNDEFINED &&
       setting_cfg.targetLatency != requirement_cfg.targetLatency) {
+    LOG(WARNING) << __func__ << ": Doesn't match target latency, cfg = "
+                 << int(setting_cfg.targetLatency)
+                 << ", req = " << int(requirement_cfg.targetLatency);
     return false;
   }
   // Ignore PHY requirement
@@ -346,11 +363,24 @@
   for (auto requirement_cfg : requirement_cfg.codecConfiguration) {
     // Directly compare CodecSpecificConfigurationLtv
     auto cfg = cfg_tag_map.find(requirement_cfg.getTag());
+    // Config not found for this requirement, cannot match
     if (cfg == cfg_tag_map.end()) {
+      LOG(WARNING) << __func__ << ": Config not found for the requirement "
+                   << requirement_cfg.toString();
       return false;
     }
 
+    // Ignore matching for audio channel allocation
+    // since the rule is complicated. Match outside instead
+    if (requirement_cfg.getTag() ==
+        CodecSpecificConfigurationLtv::Tag::audioChannelAllocation)
+      continue;
+
     if (cfg->second != requirement_cfg) {
+      LOG(WARNING) << __func__
+                   << ": Config doesn't match the requirement, cfg = "
+                   << cfg->second.toString()
+                   << ", req = " << requirement_cfg.toString();
       return false;
     }
   }
@@ -395,35 +425,133 @@
   }
 }
 
+int getLeAudioAseConfigurationAllocationBitmask(LeAudioAseConfiguration cfg) {
+  for (auto cfg_ltv : cfg.codecConfiguration) {
+    if (cfg_ltv.getTag() ==
+        CodecSpecificConfigurationLtv::Tag::audioChannelAllocation) {
+      return cfg_ltv
+          .get<CodecSpecificConfigurationLtv::Tag::audioChannelAllocation>()
+          .bitmask;
+    }
+  }
+  return 0;
+}
+
+int getCountFromBitmask(int bitmask) {
+  return std::bitset<32>(bitmask).count();
+}
+
+std::optional<AseDirectionConfiguration> findValidMonoConfig(
+    std::vector<AseDirectionConfiguration>& valid_direction_configurations,
+    int bitmask) {
+  for (auto& cfg : valid_direction_configurations) {
+    int cfg_bitmask =
+        getLeAudioAseConfigurationAllocationBitmask(cfg.aseConfiguration);
+    if (getCountFromBitmask(cfg_bitmask) <= 1) {
+      // Modify the bitmask to be the same as the requirement
+      for (auto& codec_cfg : cfg.aseConfiguration.codecConfiguration) {
+        if (codec_cfg.getTag() ==
+            CodecSpecificConfigurationLtv::Tag::audioChannelAllocation) {
+          codec_cfg
+              .get<CodecSpecificConfigurationLtv::Tag::audioChannelAllocation>()
+              .bitmask = bitmask;
+          return cfg;
+        }
+      }
+    }
+  }
+  return std::nullopt;
+}
+
+std::vector<AseDirectionConfiguration> getValidConfigurationsFromAllocation(
+    int req_allocation_bitmask,
+    std::vector<AseDirectionConfiguration>& valid_direction_configurations,
+    bool is_exact) {
+  // Prefer the same allocation_bitmask
+  int channel_count = getCountFromBitmask(req_allocation_bitmask);
+
+  if (is_exact) {
+    for (auto& cfg : valid_direction_configurations) {
+      int cfg_bitmask =
+          getLeAudioAseConfigurationAllocationBitmask(cfg.aseConfiguration);
+      if (cfg_bitmask == req_allocation_bitmask) {
+        LOG(DEBUG)
+            << __func__
+            << ": Found an exact match for the requirement allocation of "
+            << cfg_bitmask;
+        return {cfg};
+      }
+    }
+    return {};
+  }
+  // Not using exact match strategy
+  if (channel_count <= 1) {
+    // Mono requirement matched if cfg is a mono config
+    auto cfg = findValidMonoConfig(valid_direction_configurations,
+                                   req_allocation_bitmask);
+    if (cfg.has_value()) return {cfg.value()};
+  } else {
+    // Stereo requirement returns 2 mono configs
+    // that has a combined bitmask equal to the stereo config
+    std::vector<AseDirectionConfiguration> temp;
+    for (int bit = 0; bit < 32; ++bit)
+      if (req_allocation_bitmask & (1 << bit)) {
+        auto cfg =
+            findValidMonoConfig(valid_direction_configurations, (1 << bit));
+        if (cfg.has_value()) temp.push_back(cfg.value());
+      }
+    if (temp.size() == channel_count) return temp;
+  }
+  return {};
+}
+
 void LeAudioOffloadAudioProvider::filterRequirementAseDirectionConfiguration(
     std::optional<std::vector<std::optional<AseDirectionConfiguration>>>&
         direction_configurations,
     const std::vector<std::optional<AseDirectionRequirement>>& requirements,
     std::optional<std::vector<std::optional<AseDirectionConfiguration>>>&
-        valid_direction_configurations) {
+        valid_direction_configurations,
+    bool is_exact) {
+  // For every requirement, find the matched ase configuration
+  if (!direction_configurations.has_value()) return;
+
   if (!valid_direction_configurations.has_value()) {
     valid_direction_configurations =
         std::vector<std::optional<AseDirectionConfiguration>>();
   }
-  // For every requirement, find the matched ase configuration
-  if (!direction_configurations.has_value()) return;
+
   for (auto& requirement : requirements) {
     if (!requirement.has_value()) continue;
+    auto req_allocation_bitmask = getLeAudioAseConfigurationAllocationBitmask(
+        requirement.value().aseConfiguration);
+    auto req_channel_count = getCountFromBitmask(req_allocation_bitmask);
+
+    auto temp = std::vector<AseDirectionConfiguration>();
+
     for (auto direction_configuration : direction_configurations.value()) {
       if (!direction_configuration.has_value()) continue;
-      if (!isMatchedAseConfiguration(
+      if (!filterMatchedAseConfiguration(
               direction_configuration.value().aseConfiguration,
               requirement.value().aseConfiguration))
         continue;
       // Valid if match any requirement.
-      valid_direction_configurations.value().push_back(direction_configuration);
-      break;
+      temp.push_back(direction_configuration.value());
     }
-  }
-  // Ensure that each requirement will have one direction configurations
-  if (valid_direction_configurations.value().empty() ||
-      (valid_direction_configurations.value().size() != requirements.size())) {
-    valid_direction_configurations = std::nullopt;
+
+    // Get the best matching config based on channel allocation
+    auto total_cfg_channel_count = 0;
+    auto req_valid_configs = getValidConfigurationsFromAllocation(
+        req_allocation_bitmask, temp, is_exact);
+    // Count and check required channel counts
+    for (auto& cfg : req_valid_configs) {
+      total_cfg_channel_count += getCountFromBitmask(
+          getLeAudioAseConfigurationAllocationBitmask(cfg.aseConfiguration));
+      valid_direction_configurations.value().push_back(cfg);
+    }
+    if (total_cfg_channel_count != req_channel_count) {
+      valid_direction_configurations = std::nullopt;
+      return;
+    }
   }
 }
 
@@ -444,10 +572,6 @@
       .flags = setting.flags,
       .packing = setting.packing,
   };
-  // Try to match context in metadata.
-  if (!filterCapabilitiesMatchedContext(filtered_setting.audioContext,
-                                        capabilities))
-    return std::nullopt;
 
   // Get a list of all matched AseDirectionConfiguration
   // for the input direction
@@ -488,8 +612,8 @@
 std::optional<LeAudioAseConfigurationSetting>
 LeAudioOffloadAudioProvider::getRequirementMatchedAseConfigurationSettings(
     IBluetoothAudioProvider::LeAudioAseConfigurationSetting& setting,
-    const IBluetoothAudioProvider::LeAudioConfigurationRequirement&
-        requirement) {
+    const IBluetoothAudioProvider::LeAudioConfigurationRequirement& requirement,
+    bool is_exact) {
   // Try to match context in metadata.
   if ((setting.audioContext.bitmask & requirement.audioContext.bitmask) !=
       requirement.audioContext.bitmask)
@@ -498,12 +622,6 @@
   // Further filter setting's context
   setting.audioContext.bitmask &= requirement.audioContext.bitmask;
 
-  // Check requirement for the correct direction
-  const std::optional<std::vector<std::optional<AseDirectionRequirement>>>*
-      direction_requirement;
-  std::vector<std::optional<AseDirectionConfiguration>>*
-      direction_configuration;
-
   // Create a new LeAudioAseConfigurationSetting to return
   LeAudioAseConfigurationSetting filtered_setting{
       .audioContext = setting.audioContext,
@@ -514,22 +632,63 @@
   if (requirement.sinkAseRequirement.has_value()) {
     filterRequirementAseDirectionConfiguration(
         setting.sinkAseConfiguration, requirement.sinkAseRequirement.value(),
-        filtered_setting.sinkAseConfiguration);
-    if (!filtered_setting.sinkAseConfiguration.has_value()) return std::nullopt;
+        filtered_setting.sinkAseConfiguration, is_exact);
+    if (!filtered_setting.sinkAseConfiguration.has_value()) {
+      return std::nullopt;
+    }
   }
 
   if (requirement.sourceAseRequirement.has_value()) {
     filterRequirementAseDirectionConfiguration(
         setting.sourceAseConfiguration,
         requirement.sourceAseRequirement.value(),
-        filtered_setting.sourceAseConfiguration);
-    if (!filtered_setting.sourceAseConfiguration.has_value())
+        filtered_setting.sourceAseConfiguration, is_exact);
+    if (!filtered_setting.sourceAseConfiguration.has_value()) {
       return std::nullopt;
+    }
   }
 
   return filtered_setting;
 }
 
+std::vector<IBluetoothAudioProvider::LeAudioAseConfigurationSetting>
+LeAudioOffloadAudioProvider::matchWithRequirement(
+    std::vector<IBluetoothAudioProvider::LeAudioAseConfigurationSetting>&
+        matched_ase_configuration_settings,
+    const std::vector<IBluetoothAudioProvider::LeAudioConfigurationRequirement>&
+        in_requirements,
+    bool is_exact) {
+  // Each requirement will match with a valid setting
+  std::vector<IBluetoothAudioProvider::LeAudioAseConfigurationSetting> result;
+  for (auto& requirement : in_requirements) {
+    LOG(INFO) << __func__ << ": Trying to match for the requirement "
+              << requirement.toString();
+    bool is_matched = false;
+
+    for (auto& setting : matched_ase_configuration_settings) {
+      auto filtered_ase_configuration_setting =
+          getRequirementMatchedAseConfigurationSettings(setting, requirement,
+                                                        is_exact);
+      if (filtered_ase_configuration_setting.has_value()) {
+        result.push_back(filtered_ase_configuration_setting.value());
+        LOG(INFO) << __func__ << ": Result = "
+                  << filtered_ase_configuration_setting.value().toString();
+        // Found a matched setting, ignore other settings
+        is_matched = true;
+        break;
+      }
+    }
+    if (!is_matched) {
+      // If cannot satisfy this requirement, return an empty result
+      LOG(WARNING) << __func__ << ": Cannot match the requirement "
+                   << requirement.toString();
+      result.clear();
+      break;
+    }
+  }
+  return result;
+}
+
 // For each requirement, a valid ASE configuration will satify:
 // - matched with any sink capability (if presented)
 // - OR matched with any source capability (if presented)
@@ -555,31 +714,43 @@
     return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
   }
 
-  // Each setting consist of source and sink AseDirectionConfiguration vector
-  // Filter every sink capability
+  // Split out preferred and non-preferred settings based on context
+  // An example: preferred = MEDIA, available: MEDIA | CONVERSATION
+  // -> preferred list will have settings with MEDIA context
+  // -> non-preferred list will have settings with any context
+  // We want to match requirement with preferred context settings first
   std::vector<IBluetoothAudioProvider::LeAudioAseConfigurationSetting>
       matched_ase_configuration_settings;
+  // Matched ASE configuration with non-preferred audio context
+  std::vector<IBluetoothAudioProvider::LeAudioAseConfigurationSetting>
+      non_prefer_matched_ase_configuration_settings;
 
-  if (in_remoteSinkAudioCapabilities.has_value()) {
+  if (in_remoteSinkAudioCapabilities.has_value())
     // Matching each setting with any remote capabilities
-    for (auto& setting : ase_configuration_settings) {
+    for (auto& setting : ase_configuration_settings)
       for (auto& capability : in_remoteSinkAudioCapabilities.value()) {
         if (!capability.has_value()) continue;
         auto filtered_ase_configuration_setting =
             getCapabilitiesMatchedAseConfigurationSettings(
                 setting, capability.value(), kLeAudioDirectionSink);
         if (filtered_ase_configuration_setting.has_value()) {
-          matched_ase_configuration_settings.push_back(
+          // Push to non-prefer first for the broadest matching possible
+          non_prefer_matched_ase_configuration_settings.push_back(
               filtered_ase_configuration_setting.value());
+          // Try to filter out prefer context to another vector.
+          if (filterCapabilitiesMatchedContext(
+                  filtered_ase_configuration_setting.value().audioContext,
+                  capability.value())) {
+            matched_ase_configuration_settings.push_back(
+                filtered_ase_configuration_setting.value());
+          }
         }
       }
-    }
-  }
 
   // Combine filter every source capability
-  if (in_remoteSourceAudioCapabilities.has_value()) {
+  if (in_remoteSourceAudioCapabilities.has_value())
     // Matching each setting with any remote capabilities
-    for (auto& setting : ase_configuration_settings) {
+    for (auto& setting : ase_configuration_settings)
       for (auto& capability : in_remoteSourceAudioCapabilities.value()) {
         if (!capability.has_value()) continue;
         auto filtered_ase_configuration_setting =
@@ -588,45 +759,56 @@
         if (filtered_ase_configuration_setting.has_value()) {
           // Put into the same list
           // possibly duplicated, filtered by requirement later
-          matched_ase_configuration_settings.push_back(
+          // Push to non-prefer first for the broadest matching possible
+          non_prefer_matched_ase_configuration_settings.push_back(
               filtered_ase_configuration_setting.value());
+          // Try to filter out prefer context to another vector.
+          if (filterCapabilitiesMatchedContext(
+                  filtered_ase_configuration_setting.value().audioContext,
+                  capability.value())) {
+            matched_ase_configuration_settings.push_back(
+                filtered_ase_configuration_setting.value());
+          }
         }
       }
-    }
-  }
 
-  if (matched_ase_configuration_settings.empty()) {
-    LOG(WARNING) << __func__ << ": No setting matched the capability";
-    return ndk::ScopedAStatus::ok();
-  }
-  // Each requirement will match with a valid setting
-  std::vector<IBluetoothAudioProvider::LeAudioAseConfigurationSetting> result;
-  for (auto& requirement : in_requirements) {
-    LOG(INFO) << __func__ << ": Trying to match for the requirement "
-              << requirement.toString();
-    bool is_matched = false;
+  // Matching priority list:
+  // Preferred context - exact match with allocation
+  // Any context - exact match with allocation
+  // Preferred context - loose match with allocation
+  // Any context - loose match with allocation
 
-    for (auto& setting : matched_ase_configuration_settings) {
-      auto filtered_ase_configuration_setting =
-          getRequirementMatchedAseConfigurationSettings(setting, requirement);
-      if (filtered_ase_configuration_setting.has_value()) {
-        result.push_back(filtered_ase_configuration_setting.value());
-        LOG(INFO) << __func__ << ": Result = "
-                  << filtered_ase_configuration_setting.value().toString();
-        // Found a matched setting, ignore other settings
-        is_matched = true;
-        break;
-      }
-    }
-    if (!is_matched) {
-      // If cannot satisfy this requirement, return an empty result
-      LOG(WARNING) << __func__ << ": Cannot match the requirement "
-                   << requirement.toString();
-      result.clear();
-      break;
-    }
+  // A loose match will attempt to return 2 settings with the
+  // combined allocation bitmask equal the required allocation.
+  // For example, we can return 2 link (left link and right link) when
+  // the requirement required 1 (left + right) link.
+  auto result = matchWithRequirement(matched_ase_configuration_settings,
+                                     in_requirements, true);
+  if (result.empty()) {
+    LOG(WARNING)
+        << __func__
+        << ": Cannot match with preferred context settings - exact match";
+    result = matchWithRequirement(non_prefer_matched_ase_configuration_settings,
+                                  in_requirements, true);
   }
-
+  if (result.empty()) {
+    LOG(WARNING)
+        << __func__
+        << ": Cannot match with non-preferred context settings - exact match";
+    result = matchWithRequirement(matched_ase_configuration_settings,
+                                  in_requirements, false);
+  }
+  if (result.empty()) {
+    LOG(WARNING) << __func__
+                 << ": Cannot match with preferred context settings - "
+                    "non-exact match";
+    result = matchWithRequirement(non_prefer_matched_ase_configuration_settings,
+                                  in_requirements, false);
+  }
+  if (result.empty())
+    LOG(ERROR) << __func__
+               << ": Cannot match with non preferred context settings - "
+                  "non-exact match";
   *_aidl_return = result;
   return ndk::ScopedAStatus::ok();
 };
@@ -642,7 +824,6 @@
       requirement_qos.maxTransportLatencyMs) {
     return false;
   }
-  // Ignore other parameters, as they are not populated in the setting_qos
   return true;
 }
 
@@ -658,7 +839,8 @@
     uint8_t direction,
     const IBluetoothAudioProvider::LeAudioAseQosConfigurationRequirement&
         qosRequirement,
-    std::vector<LeAudioAseConfigurationSetting>& ase_configuration_settings) {
+    std::vector<LeAudioAseConfigurationSetting>& ase_configuration_settings,
+    bool is_exact) {
   std::optional<AseQosDirectionRequirement> direction_qos_requirement =
       std::nullopt;
 
@@ -680,17 +862,26 @@
 
     // Get a list of all matched AseDirectionConfiguration
     // for the input direction
-    std::vector<std::optional<AseDirectionConfiguration>>*
-        direction_configuration = nullptr;
+    std::optional<std::vector<std::optional<AseDirectionConfiguration>>>
+        direction_configuration = std::nullopt;
     if (direction == kLeAudioDirectionSink) {
       if (!setting.sinkAseConfiguration.has_value()) continue;
-      direction_configuration = &setting.sinkAseConfiguration.value();
+      direction_configuration.emplace(setting.sinkAseConfiguration.value());
     } else {
       if (!setting.sourceAseConfiguration.has_value()) continue;
-      direction_configuration = &setting.sourceAseConfiguration.value();
+      direction_configuration.emplace(setting.sourceAseConfiguration.value());
     }
 
-    for (auto cfg : *direction_configuration) {
+    if (!direction_configuration.has_value()) {
+      return std::nullopt;
+    }
+
+    // Collect all valid cfg into a vector
+    // Then try to get the best match for audio allocation
+
+    auto temp = std::vector<AseDirectionConfiguration>();
+
+    for (auto& cfg : direction_configuration.value()) {
       if (!cfg.has_value()) continue;
       // If no requirement, return the first QoS
       if (!direction_qos_requirement.has_value()) {
@@ -701,14 +892,30 @@
       // Try to match the ASE configuration
       // and QoS with requirement
       if (!cfg.value().qosConfiguration.has_value()) continue;
-      if (isMatchedAseConfiguration(
+      if (filterMatchedAseConfiguration(
               cfg.value().aseConfiguration,
               direction_qos_requirement.value().aseConfiguration) &&
           isMatchedQosRequirement(cfg.value().qosConfiguration.value(),
                                   direction_qos_requirement.value())) {
-        return cfg.value().qosConfiguration;
+        temp.push_back(cfg.value());
       }
     }
+    LOG(WARNING) << __func__ << ": Got " << temp.size()
+                 << " configs, start matching allocation";
+
+    int qos_allocation_bitmask = getLeAudioAseConfigurationAllocationBitmask(
+        direction_qos_requirement.value().aseConfiguration);
+    // Get the best matching config based on channel allocation
+    auto req_valid_configs = getValidConfigurationsFromAllocation(
+        qos_allocation_bitmask, temp, is_exact);
+    if (req_valid_configs.empty()) {
+      LOG(WARNING) << __func__
+                   << ": Cannot find matching allocation for bitmask "
+                   << qos_allocation_bitmask;
+
+    } else {
+      return req_valid_configs[0].qosConfiguration;
+    }
   }
 
   return std::nullopt;
@@ -730,15 +937,30 @@
   if (in_qosRequirement.sinkAseQosRequirement.has_value()) {
     if (!isValidQosRequirement(in_qosRequirement.sinkAseQosRequirement.value()))
       return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
-    result.sinkQosConfiguration = getDirectionQosConfiguration(
-        kLeAudioDirectionSink, in_qosRequirement, ase_configuration_settings);
+    {
+      // Try exact match first
+      result.sinkQosConfiguration =
+          getDirectionQosConfiguration(kLeAudioDirectionSink, in_qosRequirement,
+                                       ase_configuration_settings, true);
+      if (!result.sinkQosConfiguration.has_value()) {
+        result.sinkQosConfiguration = getDirectionQosConfiguration(
+            kLeAudioDirectionSink, in_qosRequirement,
+            ase_configuration_settings, false);
+      }
+    }
   }
   if (in_qosRequirement.sourceAseQosRequirement.has_value()) {
     if (!isValidQosRequirement(
             in_qosRequirement.sourceAseQosRequirement.value()))
       return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
-    result.sourceQosConfiguration = getDirectionQosConfiguration(
-        kLeAudioDirectionSource, in_qosRequirement, ase_configuration_settings);
+    result.sourceQosConfiguration =
+        getDirectionQosConfiguration(kLeAudioDirectionSource, in_qosRequirement,
+                                     ase_configuration_settings, true);
+    if (!result.sourceQosConfiguration.has_value()) {
+      result.sourceQosConfiguration = getDirectionQosConfiguration(
+          kLeAudioDirectionSource, in_qosRequirement,
+          ase_configuration_settings, false);
+    }
   }
 
   *_aidl_return = result;
@@ -763,28 +985,127 @@
   return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
 };
 
+LeAudioBroadcastConfigurationSetting getDefaultBroadcastSetting(
+    int context_bitmask, IBluetoothAudioProvider::BroadcastQuality quality) {
+  LeAudioBroadcastConfigurationSetting setting;
+  setting.retransmitionNum = 4;
+  setting.maxTransportLatencyMs = 60;
+  setting.sduIntervalUs = 10000;
+  setting.maxSduOctets = 40;
+
+  if (quality == IBluetoothAudioProvider::BroadcastQuality::HIGH) {
+    LOG(INFO) << __func__ << ": High quality, returning high quality settings";
+    setting.retransmitionNum = 4;
+    setting.maxTransportLatencyMs = 65;
+    setting.maxSduOctets = 200;
+    return setting;
+  }
+
+  // Populate other settings base on context
+  // TODO: Populate with better design
+  if (context_bitmask & (AudioContext::LIVE_AUDIO | AudioContext::GAME)) {
+    setting.retransmitionNum = 2;
+    setting.maxTransportLatencyMs = 10;
+    setting.maxSduOctets = 120;
+  } else if (context_bitmask & (AudioContext::INSTRUCTIONAL)) {
+    setting.retransmitionNum = 2;
+    setting.maxTransportLatencyMs = 10;
+    setting.maxSduOctets = 40;
+  } else if (context_bitmask &
+             (AudioContext::SOUND_EFFECTS | AudioContext::UNSPECIFIED)) {
+    setting.retransmitionNum = 4;
+    setting.maxTransportLatencyMs = 60;
+    setting.maxSduOctets = 80;
+  } else if (context_bitmask &
+             (AudioContext::ALERTS | AudioContext::NOTIFICATIONS |
+              AudioContext::EMERGENCY_ALARM)) {
+    setting.retransmitionNum = 4;
+    setting.maxTransportLatencyMs = 60;
+    setting.maxSduOctets = 40;
+  } else if (context_bitmask & AudioContext::MEDIA) {
+    setting.retransmitionNum = 4;
+    setting.maxTransportLatencyMs = 60;
+    setting.maxSduOctets = 120;
+  }
+
+  return setting;
+}
+void modifySubBISConfigAllocation(
+    IBluetoothAudioProvider::LeAudioSubgroupBisConfiguration& sub_bis_cfg,
+    int allocation_bitmask) {
+  for (auto& codec_cfg : sub_bis_cfg.bisConfiguration.codecConfiguration) {
+    if (codec_cfg.getTag() ==
+        CodecSpecificConfigurationLtv::audioChannelAllocation) {
+      codec_cfg.get<CodecSpecificConfigurationLtv::audioChannelAllocation>()
+          .bitmask = allocation_bitmask;
+      break;
+    }
+  }
+}
+void modifySubgroupConfiguration(
+    IBluetoothAudioProvider::LeAudioBroadcastSubgroupConfiguration&
+        subgroup_cfg,
+    int context_bitmask) {
+  // STEREO configs
+  // Split into 2 sub BIS config, each has numBis = 1
+  if (context_bitmask & (AudioContext::LIVE_AUDIO | AudioContext::GAME |
+                         AudioContext::SOUND_EFFECTS |
+                         AudioContext::UNSPECIFIED | AudioContext::MEDIA)) {
+    if (subgroup_cfg.bisConfigurations.size() == 1)
+      subgroup_cfg.bisConfigurations.push_back(
+          subgroup_cfg.bisConfigurations[0]);
+
+    subgroup_cfg.bisConfigurations[0].numBis = 1;
+    modifySubBISConfigAllocation(
+        subgroup_cfg.bisConfigurations[0],
+        CodecSpecificConfigurationLtv::AudioChannelAllocation::FRONT_LEFT);
+
+    subgroup_cfg.bisConfigurations[1].numBis = 1;
+    modifySubBISConfigAllocation(
+        subgroup_cfg.bisConfigurations[1],
+        CodecSpecificConfigurationLtv::AudioChannelAllocation::FRONT_RIGHT);
+    return;
+  }
+
+  // MONO configs
+  for (auto& sub_bis_cfg : subgroup_cfg.bisConfigurations) {
+    sub_bis_cfg.numBis = 1;
+    modifySubBISConfigAllocation(
+        sub_bis_cfg,
+        CodecSpecificConfigurationLtv::AudioChannelAllocation::FRONT_CENTER);
+  }
+}
+
 void LeAudioOffloadAudioProvider::getBroadcastSettings() {
   if (!broadcast_settings.empty()) return;
 
-  LOG(INFO) << __func__ << ": Loading broadcast settings from provider info";
+  LOG(INFO) << __func__
+            << ": Loading basic broadcast settings from provider info";
 
   std::vector<CodecInfo> db_codec_info =
       BluetoothAudioCodecs::GetLeAudioOffloadCodecInfo(
           SessionType::LE_AUDIO_BROADCAST_HARDWARE_OFFLOAD_ENCODING_DATAPATH);
+  for (auto x : db_codec_info) {
+    LOG(INFO) << __func__ << ": codec info = " << x.toString();
+  }
   broadcast_settings.clear();
 
-  // Default value for unmapped fields
+  // Default value population
   CodecSpecificConfigurationLtv::AudioChannelAllocation default_allocation;
   default_allocation.bitmask =
       CodecSpecificConfigurationLtv::AudioChannelAllocation::FRONT_CENTER;
   CodecSpecificConfigurationLtv::CodecFrameBlocksPerSDU default_frame;
-  default_frame.value = 2;
+  default_frame.value = 1;
 
   for (auto& codec_info : db_codec_info) {
     if (codec_info.transport.getTag() != CodecInfo::Transport::leAudio)
       continue;
     auto& transport = codec_info.transport.get<CodecInfo::Transport::leAudio>();
     LeAudioBroadcastConfigurationSetting setting;
+    setting.retransmitionNum = 4;
+    setting.maxTransportLatencyMs = 60;
+    setting.sduIntervalUs = 10000;
+    setting.maxSduOctets = 40;
     // Default setting
     setting.numBis = 1;
     setting.phy = {Phy::TWO_M};
@@ -803,13 +1124,15 @@
         default_frame,
     };
 
+    // Ignore bis_cfg.metadata
+
     // Add information to structure
     IBluetoothAudioProvider::LeAudioSubgroupBisConfiguration sub_bis_cfg;
-    sub_bis_cfg.numBis = 2;
+    sub_bis_cfg.numBis = 1;
     sub_bis_cfg.bisConfiguration = bis_cfg;
     IBluetoothAudioProvider::LeAudioBroadcastSubgroupConfiguration sub_cfg;
     // Populate the same sub config
-    sub_cfg.bisConfigurations = {sub_bis_cfg, sub_bis_cfg};
+    sub_cfg.bisConfigurations = {sub_bis_cfg};
     setting.subgroupsConfigurations = {sub_cfg};
 
     broadcast_settings.push_back(setting);
@@ -853,34 +1176,91 @@
   return filtered_setting;
 }
 
+std::vector<CodecSpecificConfigurationLtv> getCodecRequirementBasedOnContext(
+    int context_bitmask, IBluetoothAudioProvider::BroadcastQuality quality) {
+  // Default requirement: lc3_stereo_16_2
+  std::vector<CodecSpecificConfigurationLtv> requirement = {
+      CodecSpecificConfigurationLtv::SamplingFrequency::HZ16000,
+      CodecSpecificConfigurationLtv::FrameDuration::US10000,
+  };
+
+  if (quality == IBluetoothAudioProvider::BroadcastQuality::HIGH) {
+    LOG(INFO) << __func__
+              << ": High quality, returning high quality requirement";
+    requirement = {
+        CodecSpecificConfigurationLtv::SamplingFrequency::HZ48000,
+        CodecSpecificConfigurationLtv::FrameDuration::US10000,
+    };
+    return requirement;
+  }
+
+  if (context_bitmask & (AudioContext::LIVE_AUDIO | AudioContext::GAME)) {
+    // lc3_stereo_24_2_1
+    requirement = {
+        CodecSpecificConfigurationLtv::SamplingFrequency::HZ24000,
+        CodecSpecificConfigurationLtv::FrameDuration::US10000,
+    };
+  } else if (context_bitmask & (AudioContext::INSTRUCTIONAL)) {
+    // lc3_mono_16_2
+    requirement = {
+        CodecSpecificConfigurationLtv::SamplingFrequency::HZ16000,
+        CodecSpecificConfigurationLtv::FrameDuration::US10000,
+    };
+  } else if (context_bitmask &
+             (AudioContext::SOUND_EFFECTS | AudioContext::UNSPECIFIED)) {
+    // lc3_stereo_16_2
+    requirement = {
+        CodecSpecificConfigurationLtv::SamplingFrequency::HZ16000,
+        CodecSpecificConfigurationLtv::FrameDuration::US10000,
+    };
+  } else if (context_bitmask &
+             (AudioContext::ALERTS | AudioContext::NOTIFICATIONS |
+              AudioContext::EMERGENCY_ALARM)) {
+    // Default requirement: lc3_stereo_16_2
+    requirement = {
+        CodecSpecificConfigurationLtv::SamplingFrequency::HZ16000,
+        CodecSpecificConfigurationLtv::FrameDuration::US10000,
+    };
+  } else if (context_bitmask & AudioContext::MEDIA) {
+    // Default requirement: lc3_stereo_16_2
+    // Return the 48k requirement
+    requirement = {
+        CodecSpecificConfigurationLtv::SamplingFrequency::HZ24000,
+        CodecSpecificConfigurationLtv::FrameDuration::US10000,
+    };
+  }
+  return requirement;
+}
+
 bool LeAudioOffloadAudioProvider::isSubgroupConfigurationMatchedContext(
-    AudioContext setting_context,
+    AudioContext requirement_context,
+    IBluetoothAudioProvider::BroadcastQuality quality,
     LeAudioBroadcastSubgroupConfiguration configuration) {
   // Find any valid context metadata in the bisConfigurations
   // assuming the bis configuration in the same bis subgroup
   // will have the same context metadata
   std::optional<AudioContext> config_context = std::nullopt;
 
-  for (auto& p : configuration.bisConfigurations)
-    if (p.bisConfiguration.metadata.has_value()) {
-      bool is_context_found = false;
-      for (auto& metadata : p.bisConfiguration.metadata.value()) {
-        if (!metadata.has_value()) continue;
-        if (metadata.value().getTag() ==
-            MetadataLtv::Tag::preferredAudioContexts) {
-          config_context = metadata.value()
-                               .get<MetadataLtv::Tag::preferredAudioContexts>()
-                               .values;
-          is_context_found = true;
-          break;
-        }
-      }
-      if (is_context_found) break;
-    }
+  auto codec_requirement =
+      getCodecRequirementBasedOnContext(requirement_context.bitmask, quality);
+  std::map<CodecSpecificConfigurationLtv::Tag, CodecSpecificConfigurationLtv>
+      req_tag_map;
+  for (auto x : codec_requirement) req_tag_map[x.getTag()] = x;
 
-  // Not found context metadata in any of the bis configuration, assume matched
-  if (!config_context.has_value()) return true;
-  return (setting_context.bitmask & config_context.value().bitmask);
+  for (auto& bis_cfg : configuration.bisConfigurations) {
+    // Check every sub_bis_cfg to see which match
+    for (auto& x : bis_cfg.bisConfiguration.codecConfiguration) {
+      auto p = req_tag_map.find(x.getTag());
+      if (p == req_tag_map.end()) continue;
+      if (p->second != x) {
+        LOG(WARNING) << __func__ << ": does not match for context "
+                     << requirement_context.toString()
+                     << ", cfg = " << x.toString();
+        return false;
+      }
+    }
+  }
+  return true;
 }
 
 ndk::ScopedAStatus
@@ -900,7 +1280,8 @@
   // We will allow empty capability input, match all settings with requirements.
   getBroadcastSettings();
   std::vector<LeAudioBroadcastConfigurationSetting> filtered_settings;
-  if (!in_remoteSinkAudioCapabilities.has_value()) {
+  if (!in_remoteSinkAudioCapabilities.has_value() ||
+      in_remoteSinkAudioCapabilities.value().empty()) {
     LOG(INFO) << __func__ << ": Empty capability, get all broadcast settings";
     filtered_settings = broadcast_settings;
   } else {
@@ -931,45 +1312,72 @@
   // Gather these suitable subgroup config in an array.
   // If the setting can satisfy all requirement, we can return the setting
   // with the filtered array.
-  for (auto& setting : filtered_settings) {
-    LeAudioBroadcastConfigurationSetting matched_setting(setting);
-    matched_setting.subgroupsConfigurations.clear();
-    auto total_num_bis = 0;
 
-    bool matched_all_requirement = true;
+  auto context_bitmask =
+      in_requirement.subgroupConfigurationRequirements[0].audioContext.bitmask;
+  auto quality = in_requirement.subgroupConfigurationRequirements[0].quality;
+  LeAudioBroadcastConfigurationSetting return_setting =
+      getDefaultBroadcastSetting(context_bitmask, quality);
+  // Default setting
+  return_setting.numBis = 0;
+  return_setting.subgroupsConfigurations = {};
 
-    for (auto& sub_req : in_requirement.subgroupConfigurationRequirements) {
-      bool is_matched = false;
-      for (auto& sub_cfg : setting.subgroupsConfigurations) {
-        // Match the context
-        if (!isSubgroupConfigurationMatchedContext(sub_req.audioContext,
-                                                   sub_cfg))
-          continue;
-        // Matching number of BIS
-        if (sub_req.bisNumPerSubgroup != sub_cfg.bisConfigurations.size())
-          continue;
-        // Currently will ignore quality matching.
-        matched_setting.subgroupsConfigurations.push_back(sub_cfg);
-        total_num_bis += sub_cfg.bisConfigurations.size();
-        is_matched = true;
-        break;
+  LeAudioDataPathConfiguration path;
+  path.isoDataPathConfiguration.isTransparent = true;
+  path.dataPathId = kIsoDataPathPlatformDefault;
+
+  // Each subreq, find a setting that match
+  for (auto& sub_req : in_requirement.subgroupConfigurationRequirements) {
+    bool is_setting_matched = false;
+    for (auto setting : filtered_settings) {
+      bool is_matched = true;
+      // Check if every sub BIS config satisfy
+      for (auto& sub_group_config : setting.subgroupsConfigurations) {
+        if (!isSubgroupConfigurationMatchedContext(
+                sub_req.audioContext, sub_req.quality, sub_group_config)) {
+          is_matched = false;
+          break;
+        }
+        path.isoDataPathConfiguration.codecId =
+            sub_group_config.bisConfigurations[0].bisConfiguration.codecId;
+        // Also modify the subgroup config to match the context
+        modifySubgroupConfiguration(sub_group_config, context_bitmask);
       }
-      // There is an unmatched requirement, this setting cannot be used
-      if (!is_matched) {
-        matched_all_requirement = false;
+
+      if (is_matched) {
+        is_setting_matched = true;
+        for (auto& sub_group_config : setting.subgroupsConfigurations)
+          return_setting.subgroupsConfigurations.push_back(sub_group_config);
         break;
       }
     }
 
-    if (!matched_all_requirement) continue;
-
-    matched_setting.numBis = total_num_bis;
-    // Return the filtered setting if all requirement satified
-    *_aidl_return = matched_setting;
-    return ndk::ScopedAStatus::ok();
+    if (!is_setting_matched) {
+      LOG(WARNING) << __func__
+                   << ": Cannot find a setting that match requirement "
+                   << sub_req.toString();
+      return ndk::ScopedAStatus::ok();
+    }
   }
 
-  LOG(WARNING) << __func__ << ": Cannot match any requirement";
+  // Populate all numBis
+  for (auto& sub_group_config : return_setting.subgroupsConfigurations) {
+    for (auto& sub_bis_config : sub_group_config.bisConfigurations) {
+      return_setting.numBis += sub_bis_config.numBis;
+    }
+  }
+  return_setting.phy = std::vector<Phy>(return_setting.numBis, Phy::TWO_M);
+  // Populate data path config
+  return_setting.dataPathConfiguration = path;
+  // TODO: Workaround for STEREO configs maxSduOctets being doubled
+  if (context_bitmask & (AudioContext::LIVE_AUDIO | AudioContext::GAME |
+                         AudioContext::SOUND_EFFECTS |
+                         AudioContext::UNSPECIFIED | AudioContext::MEDIA)) {
+    return_setting.maxSduOctets /= 2;
+  }
+  LOG(INFO) << __func__
+            << ": Combined setting that match: " << return_setting.toString();
+  *_aidl_return = return_setting;
   return ndk::ScopedAStatus::ok();
 };
 
diff --git a/bluetooth/audio/aidl/default/LeAudioOffloadAudioProvider.h b/bluetooth/audio/aidl/default/LeAudioOffloadAudioProvider.h
index 06cd405..043d923 100644
--- a/bluetooth/audio/aidl/default/LeAudioOffloadAudioProvider.h
+++ b/bluetooth/audio/aidl/default/LeAudioOffloadAudioProvider.h
@@ -122,8 +122,9 @@
   bool isCapabilitiesMatchedCodecConfiguration(
       std::vector<CodecSpecificConfigurationLtv>& codec_cfg,
       std::vector<CodecSpecificCapabilitiesLtv> codec_capabilities);
-  bool isMatchedAseConfiguration(LeAudioAseConfiguration setting_cfg,
-                                 LeAudioAseConfiguration requirement_cfg);
+  bool filterMatchedAseConfiguration(
+      LeAudioAseConfiguration& setting_cfg,
+      const LeAudioAseConfiguration& requirement_cfg);
   bool isMatchedBISConfiguration(
       LeAudioBisConfiguration bis_cfg,
       const IBluetoothAudioProvider::LeAudioDeviceCapabilities& capabilities);
@@ -138,7 +139,8 @@
           direction_configurations,
       const std::vector<std::optional<AseDirectionRequirement>>& requirements,
       std::optional<std::vector<std::optional<AseDirectionConfiguration>>>&
-          valid_direction_configurations);
+          valid_direction_configurations,
+      bool is_exact);
   std::optional<LeAudioAseConfigurationSetting>
   getCapabilitiesMatchedAseConfigurationSettings(
       IBluetoothAudioProvider::LeAudioAseConfigurationSetting& setting,
@@ -148,7 +150,8 @@
   getRequirementMatchedAseConfigurationSettings(
       IBluetoothAudioProvider::LeAudioAseConfigurationSetting& setting,
       const IBluetoothAudioProvider::LeAudioConfigurationRequirement&
-          requirement);
+          requirement,
+      bool is_exact);
   bool isMatchedQosRequirement(LeAudioAseQosConfiguration setting_qos,
                                AseQosDirectionRequirement requirement_qos);
   std::optional<LeAudioBroadcastConfigurationSetting>
@@ -160,10 +163,20 @@
       uint8_t direction,
       const IBluetoothAudioProvider::LeAudioAseQosConfigurationRequirement&
           qosRequirement,
-      std::vector<LeAudioAseConfigurationSetting>& ase_configuration_settings);
+      std::vector<LeAudioAseConfigurationSetting>& ase_configuration_settings,
+      bool is_exact);
   bool isSubgroupConfigurationMatchedContext(
       AudioContext requirement_context,
+      IBluetoothAudioProvider::BroadcastQuality quality,
       LeAudioBroadcastSubgroupConfiguration configuration);
+  std::vector<IBluetoothAudioProvider::LeAudioAseConfigurationSetting>
+  matchWithRequirement(
+      std::vector<IBluetoothAudioProvider::LeAudioAseConfigurationSetting>&
+          matched_ase_configuration_settings,
+      const std::vector<
+          IBluetoothAudioProvider::LeAudioConfigurationRequirement>&
+          in_requirements,
+      bool is_exact);
 };
 
 class LeAudioOffloadOutputAudioProvider : public LeAudioOffloadAudioProvider {
diff --git a/bluetooth/audio/aidl/vts/VtsHalBluetoothAudioTargetTest.cpp b/bluetooth/audio/aidl/vts/VtsHalBluetoothAudioTargetTest.cpp
index ec63831..e83cb9e 100644
--- a/bluetooth/audio/aidl/vts/VtsHalBluetoothAudioTargetTest.cpp
+++ b/bluetooth/audio/aidl/vts/VtsHalBluetoothAudioTargetTest.cpp
@@ -4177,6 +4177,7 @@
         CodecSpecificCapabilitiesLtv::SupportedSamplingFrequencies();
     sampling_rate.bitmask =
         CodecSpecificCapabilitiesLtv::SupportedSamplingFrequencies::HZ48000 |
+        CodecSpecificCapabilitiesLtv::SupportedSamplingFrequencies::HZ24000 |
         CodecSpecificCapabilitiesLtv::SupportedSamplingFrequencies::HZ16000;
     auto frame_duration =
         CodecSpecificCapabilitiesLtv::SupportedFrameDurations();
@@ -4373,19 +4374,6 @@
   ASSERT_NE(configuration.numBis, 0);
   ASSERT_FALSE(configuration.subgroupsConfigurations.empty());
   VerifyBroadcastConfiguration(one_subgroup_requirement, configuration);
-
-  IBluetoothAudioProvider::LeAudioBroadcastConfigurationRequirement
-      two_subgroup_requirement =
-          GetBroadcastRequirement(true /* standard*/, true /* high */);
-
-  // Check empty capability for source direction
-  aidl_retval = audio_provider_->getLeAudioBroadcastConfiguration(
-      empty_capability, two_subgroup_requirement, &configuration);
-
-  ASSERT_TRUE(aidl_retval.isOk());
-  ASSERT_NE(configuration.numBis, 0);
-  ASSERT_FALSE(configuration.subgroupsConfigurations.empty());
-  VerifyBroadcastConfiguration(two_subgroup_requirement, configuration);
 }
 
 TEST_P(BluetoothAudioProviderLeAudioBroadcastHardwareAidl,
@@ -4404,7 +4392,7 @@
 
   IBluetoothAudioProvider::LeAudioBroadcastConfigurationRequirement
       requirement =
-          GetBroadcastRequirement(true /* standard*/, true /* high */);
+          GetBroadcastRequirement(true /* standard*/, false /* high */);
 
   IBluetoothAudioProvider::LeAudioBroadcastConfigurationSetting configuration;
 
diff --git a/bluetooth/audio/utils/aidl_session/BluetoothLeAudioAseConfigurationSettingProvider.cpp b/bluetooth/audio/utils/aidl_session/BluetoothLeAudioAseConfigurationSettingProvider.cpp
index 5429a8f..780154a 100644
--- a/bluetooth/audio/utils/aidl_session/BluetoothLeAudioAseConfigurationSettingProvider.cpp
+++ b/bluetooth/audio/utils/aidl_session/BluetoothLeAudioAseConfigurationSettingProvider.cpp
@@ -267,7 +267,7 @@
     ase_configuration_settings_.clear();
     configurations_.clear();
     auto loaded = LoadContent(kLeAudioSetConfigs, kLeAudioSetScenarios,
-                              CodecLocation::HOST);
+                              CodecLocation::ADSP);
     if (!loaded)
       LOG(ERROR) << ": Unable to load le audio set configuration files.";
   } else
@@ -371,7 +371,6 @@
       CodecSpecificConfigurationLtv::CodecFrameBlocksPerSDU();
   frame_sdu_structure.value = codec_frames_blocks_per_sdu;
   ase.codecConfiguration.push_back(frame_sdu_structure);
-  // TODO: Channel count
 }
 
 void AudioSetConfigurationProviderJson::populateAseConfiguration(
@@ -415,8 +414,53 @@
 }
 
 void AudioSetConfigurationProviderJson::populateAseQosConfiguration(
-    LeAudioAseQosConfiguration& qos,
-    const le_audio::QosConfiguration* qos_cfg) {
+    LeAudioAseQosConfiguration& qos, const le_audio::QosConfiguration* qos_cfg,
+    LeAudioAseConfiguration& ase) {
+  std::optional<CodecSpecificConfigurationLtv::CodecFrameBlocksPerSDU>
+      frameBlock = std::nullopt;
+  std::optional<CodecSpecificConfigurationLtv::FrameDuration> frameDuration =
+      std::nullopt;
+  std::optional<CodecSpecificConfigurationLtv::AudioChannelAllocation>
+      allocation = std::nullopt;
+  std::optional<CodecSpecificConfigurationLtv::OctetsPerCodecFrame> octet =
+      std::nullopt;
+
+  for (auto& cfg_ltv : ase.codecConfiguration) {
+    auto tag = cfg_ltv.getTag();
+    if (tag == CodecSpecificConfigurationLtv::codecFrameBlocksPerSDU) {
+      frameBlock =
+          cfg_ltv.get<CodecSpecificConfigurationLtv::codecFrameBlocksPerSDU>();
+    } else if (tag == CodecSpecificConfigurationLtv::frameDuration) {
+      frameDuration =
+          cfg_ltv.get<CodecSpecificConfigurationLtv::frameDuration>();
+    } else if (tag == CodecSpecificConfigurationLtv::audioChannelAllocation) {
+      allocation =
+          cfg_ltv.get<CodecSpecificConfigurationLtv::audioChannelAllocation>();
+    } else if (tag == CodecSpecificConfigurationLtv::octetsPerCodecFrame) {
+      octet = cfg_ltv.get<CodecSpecificConfigurationLtv::octetsPerCodecFrame>();
+    }
+  }
+
+  int frameBlockValue = 1;
+  if (frameBlock.has_value()) frameBlockValue = frameBlock.value().value;
+
+  // Populate maxSdu
+  if (allocation.has_value() && octet.has_value()) {
+    auto channel_count = std::bitset<32>(allocation.value().bitmask).count();
+    qos.maxSdu = channel_count * octet.value().value * frameBlockValue;
+  }
+  // Populate sduIntervalUs
+  if (frameDuration.has_value()) {
+    switch (frameDuration.value()) {
+      case CodecSpecificConfigurationLtv::FrameDuration::US7500:
+        qos.sduIntervalUs = 7500;
+        break;
+      case CodecSpecificConfigurationLtv::FrameDuration::US10000:
+        qos.sduIntervalUs = 10000;
+        break;
+    }
+    qos.sduIntervalUs *= frameBlockValue;
+  }
   qos.maxTransportLatencyMs = qos_cfg->max_transport_latency();
   qos.retransmissionNum = qos_cfg->retransmission_number();
 }
@@ -436,7 +480,7 @@
   populateAseConfiguration(ase, flat_subconfig, qos_cfg);
 
   // Translate into LeAudioAseQosConfiguration
-  populateAseQosConfiguration(qos, qos_cfg);
+  populateAseQosConfiguration(qos, qos_cfg, ase);
 
   // Translate location to data path id
   switch (location) {
@@ -453,6 +497,8 @@
       path.dataPathId = kIsoDataPathPlatformDefault;
       break;
   }
+  // Move codecId to iso data path
+  path.isoDataPathConfiguration.codecId = ase.codecId.value();
 
   direction_conf.aseConfiguration = ase;
   direction_conf.qosConfiguration = qos;
@@ -678,7 +724,8 @@
   media_context.bitmask =
       (AudioContext::ALERTS | AudioContext::INSTRUCTIONAL |
        AudioContext::NOTIFICATIONS | AudioContext::EMERGENCY_ALARM |
-       AudioContext::UNSPECIFIED | AudioContext::MEDIA);
+       AudioContext::UNSPECIFIED | AudioContext::MEDIA |
+       AudioContext::SOUND_EFFECTS);
 
   AudioContext conversational_context = AudioContext();
   conversational_context.bitmask =
diff --git a/bluetooth/audio/utils/aidl_session/BluetoothLeAudioAseConfigurationSettingProvider.h b/bluetooth/audio/utils/aidl_session/BluetoothLeAudioAseConfigurationSettingProvider.h
index ce91fca..6639009 100644
--- a/bluetooth/audio/utils/aidl_session/BluetoothLeAudioAseConfigurationSettingProvider.h
+++ b/bluetooth/audio/utils/aidl_session/BluetoothLeAudioAseConfigurationSettingProvider.h
@@ -79,7 +79,7 @@
 
   static void populateAseQosConfiguration(
       LeAudioAseQosConfiguration& qos,
-      const le_audio::QosConfiguration* qos_cfg);
+      const le_audio::QosConfiguration* qos_cfg, LeAudioAseConfiguration& ase);
 
   static AseDirectionConfiguration SetConfigurationFromFlatSubconfig(
       const le_audio::AudioSetSubConfiguration* flat_subconfig,
diff --git a/bluetooth/finder/aidl/default/BluetoothFinder.cpp b/bluetooth/finder/aidl/default/BluetoothFinder.cpp
index 236a1f8..a43846b 100644
--- a/bluetooth/finder/aidl/default/BluetoothFinder.cpp
+++ b/bluetooth/finder/aidl/default/BluetoothFinder.cpp
@@ -19,7 +19,7 @@
 namespace aidl::android::hardware::bluetooth::finder::impl {
 
 ::ndk::ScopedAStatus BluetoothFinder::sendEids(const ::std::vector<Eid>& keys) {
-  keys_.insert(keys_.end(), keys.begin(), keys.end());
+  keys_.assign(keys.begin(), keys.end());
   return ::ndk::ScopedAStatus::ok();
 }
 
diff --git a/camera/metadata/aidl/android/hardware/camera/metadata/CameraMetadataTag.aidl b/camera/metadata/aidl/android/hardware/camera/metadata/CameraMetadataTag.aidl
index f133372..236bcaf 100644
--- a/camera/metadata/aidl/android/hardware/camera/metadata/CameraMetadataTag.aidl
+++ b/camera/metadata/aidl/android/hardware/camera/metadata/CameraMetadataTag.aidl
@@ -580,25 +580,25 @@
     /**
      * android.flash.singleStrengthMaxLevel [static, int32, public]
      *
-     * <p>Maximum flash brightness level for manual flash control in SINGLE mode.</p>
+     * <p>Maximum flash brightness level for manual flash control in <code>SINGLE</code> mode.</p>
      */
     ANDROID_FLASH_SINGLE_STRENGTH_MAX_LEVEL,
     /**
      * android.flash.singleStrengthDefaultLevel [static, int32, public]
      *
-     * <p>Default flash brightness level for manual flash control in SINGLE mode.</p>
+     * <p>Default flash brightness level for manual flash control in <code>SINGLE</code> mode.</p>
      */
     ANDROID_FLASH_SINGLE_STRENGTH_DEFAULT_LEVEL,
     /**
      * android.flash.torchStrengthMaxLevel [static, int32, public]
      *
-     * <p>Maximum flash brightness level for manual flash control in TORCH mode</p>
+     * <p>Maximum flash brightness level for manual flash control in <code>TORCH</code> mode</p>
      */
     ANDROID_FLASH_TORCH_STRENGTH_MAX_LEVEL,
     /**
      * android.flash.torchStrengthDefaultLevel [static, int32, public]
      *
-     * <p>Default flash brightness level for manual flash control in TORCH mode</p>
+     * <p>Default flash brightness level for manual flash control in <code>TORCH</code> mode</p>
      */
     ANDROID_FLASH_TORCH_STRENGTH_DEFAULT_LEVEL,
     /**
diff --git a/compatibility_matrices/compatibility_matrix.202504.xml b/compatibility_matrices/compatibility_matrix.202504.xml
index 1f51d07..0e714a4 100644
--- a/compatibility_matrices/compatibility_matrix.202504.xml
+++ b/compatibility_matrices/compatibility_matrix.202504.xml
@@ -84,7 +84,7 @@
     </hal>
     <hal format="aidl">
         <name>android.hardware.automotive.vehicle</name>
-        <version>1-3</version>
+        <version>1-4</version>
         <interface>
             <name>IVehicle</name>
             <instance>default</instance>
diff --git a/gnss/aidl/default/Gnss.cpp b/gnss/aidl/default/Gnss.cpp
index c31f991..94d4d00 100644
--- a/gnss/aidl/default/Gnss.cpp
+++ b/gnss/aidl/default/Gnss.cpp
@@ -162,12 +162,13 @@
     return ScopedAStatus::ok();
 }
 
-void Gnss::reportLocation(const GnssLocation& location) const {
+void Gnss::reportLocation(const GnssLocation& location) {
     std::unique_lock<std::mutex> lock(mMutex);
     if (sGnssCallback == nullptr) {
         ALOGE("%s: GnssCallback is null.", __func__);
         return;
     }
+    mLastLocation = std::make_shared<GnssLocation>(location);
     auto status = sGnssCallback->gnssLocationCb(location);
     if (!status.isOk()) {
         ALOGE("%s: Unable to invoke gnssLocationCb", __func__);
@@ -359,7 +360,6 @@
 
 ndk::ScopedAStatus Gnss::getExtensionGnssDebug(std::shared_ptr<IGnssDebug>* iGnssDebug) {
     ALOGD("Gnss::getExtensionGnssDebug");
-
     *iGnssDebug = SharedRefBase::make<GnssDebug>();
     return ndk::ScopedAStatus::ok();
 }
@@ -398,4 +398,8 @@
     mGnssMeasurementIntervalMs = intervalMs;
 }
 
+std::shared_ptr<GnssLocation> Gnss::getLastLocation() const {
+    return mLastLocation;
+}
+
 }  // namespace aidl::android::hardware::gnss
diff --git a/gnss/aidl/default/Gnss.h b/gnss/aidl/default/Gnss.h
index 245d607..73085ef 100644
--- a/gnss/aidl/default/Gnss.h
+++ b/gnss/aidl/default/Gnss.h
@@ -87,18 +87,19 @@
     void reportSvStatus() const;
     void setGnssMeasurementEnabled(const bool enabled);
     void setGnssMeasurementInterval(const long intervalMs);
+    std::shared_ptr<GnssLocation> getLastLocation() const;
     std::shared_ptr<GnssConfiguration> mGnssConfiguration;
     std::shared_ptr<GnssPowerIndication> mGnssPowerIndication;
     std::shared_ptr<GnssMeasurementInterface> mGnssMeasurementInterface;
 
   private:
-    void reportLocation(const GnssLocation&) const;
+    void reportLocation(const GnssLocation&);
     void reportSvStatus(const std::vector<IGnssCallback::GnssSvInfo>& svInfoList) const;
+    void reportGnssStatusValue(const IGnssCallback::GnssStatusValue gnssStatusValue) const;
+    void reportNmea() const;
     std::vector<IGnssCallback::GnssSvInfo> filterBlocklistedSatellites(
             std::vector<IGnssCallback::GnssSvInfo> gnssSvInfoList) const;
-    void reportGnssStatusValue(const IGnssCallback::GnssStatusValue gnssStatusValue) const;
     std::unique_ptr<GnssLocation> getLocationFromHW();
-    void reportNmea() const;
 
     static std::shared_ptr<IGnssCallback> sGnssCallback;
 
@@ -109,6 +110,7 @@
     std::atomic<bool> mIsNmeaActive;
     std::atomic<bool> mFirstFixReceived;
     std::atomic<bool> mGnssMeasurementEnabled;
+    std::shared_ptr<GnssLocation> mLastLocation;
     std::thread mThread;
     ::android::hardware::gnss::common::ThreadBlocker mThreadBlocker;
 
diff --git a/gnss/aidl/default/GnssDebug.cpp b/gnss/aidl/default/GnssDebug.cpp
index f40c0bc..5ae6edd 100644
--- a/gnss/aidl/default/GnssDebug.cpp
+++ b/gnss/aidl/default/GnssDebug.cpp
@@ -18,10 +18,15 @@
 
 #include "GnssDebug.h"
 #include <log/log.h>
+#include <utils/SystemClock.h>
+#include "Constants.h"
+#include "Gnss.h"
 #include "MockLocation.h"
 
 namespace aidl::android::hardware::gnss {
 
+using ::android::hardware::gnss::common::kMockTimestamp;
+
 ndk::ScopedAStatus GnssDebug::getDebugData(DebugData* debugData) {
     ALOGD("GnssDebug::getDebugData");
 
@@ -36,10 +41,94 @@
                                    .speedAccuracyMetersPerSecond = 1,
                                    .bearingAccuracyDegrees = 90,
                                    .ageSeconds = 0.99};
-    TimeDebug timeDebug = {.timeEstimateMs = 1519930775453L,
+    TimeDebug timeDebug = {.timeEstimateMs = static_cast<int64_t>(
+                                   kMockTimestamp + ::android::elapsedRealtimeNano() / 1e6),
                            .timeUncertaintyNs = 1000,
-                           .frequencyUncertaintyNsPerSec = 5.0e4};
-    std::vector<SatelliteData> satelliteDataArrayDebug = {};
+                           .frequencyUncertaintyNsPerSec = 800};
+    SatelliteData satelliteData1 = {
+            .svid = 3,
+            .constellation = GnssConstellationType::GPS,
+            .ephemerisType = SatelliteEphemerisType::EPHEMERIS,
+            .ephemerisSource = SatellitePvt::SatelliteEphemerisSource::SERVER_LONG_TERM,
+            .ephemerisHealth = SatelliteEphemerisHealth::GOOD,
+            .ephemerisAgeSeconds = 12,
+            .serverPredictionIsAvailable = true,
+            .serverPredictionAgeSeconds = 30};
+    SatelliteData satelliteData2 = {
+            .svid = 5,
+            .constellation = GnssConstellationType::GPS,
+            .ephemerisType = SatelliteEphemerisType::EPHEMERIS,
+            .ephemerisSource = SatellitePvt::SatelliteEphemerisSource::SERVER_LONG_TERM,
+            .ephemerisHealth = SatelliteEphemerisHealth::GOOD,
+            .ephemerisAgeSeconds = 12,
+            .serverPredictionIsAvailable = true,
+            .serverPredictionAgeSeconds = 30};
+    SatelliteData satelliteData3 = {
+            .svid = 17,
+            .constellation = GnssConstellationType::GPS,
+            .ephemerisType = SatelliteEphemerisType::EPHEMERIS,
+            .ephemerisSource = SatellitePvt::SatelliteEphemerisSource::SERVER_LONG_TERM,
+            .ephemerisHealth = SatelliteEphemerisHealth::GOOD,
+            .ephemerisAgeSeconds = 12,
+            .serverPredictionIsAvailable = true,
+            .serverPredictionAgeSeconds = 30};
+    SatelliteData satelliteData4 = {
+            .svid = 26,
+            .constellation = GnssConstellationType::GPS,
+            .ephemerisType = SatelliteEphemerisType::EPHEMERIS,
+            .ephemerisSource = SatellitePvt::SatelliteEphemerisSource::SERVER_LONG_TERM,
+            .ephemerisHealth = SatelliteEphemerisHealth::GOOD,
+            .ephemerisAgeSeconds = 12,
+            .serverPredictionIsAvailable = true,
+            .serverPredictionAgeSeconds = 30};
+    SatelliteData satelliteData5 = {
+            .svid = 5,
+            .constellation = GnssConstellationType::GLONASS,
+            .ephemerisType = SatelliteEphemerisType::EPHEMERIS,
+            .ephemerisSource = SatellitePvt::SatelliteEphemerisSource::SERVER_LONG_TERM,
+            .ephemerisHealth = SatelliteEphemerisHealth::GOOD,
+            .ephemerisAgeSeconds = 12,
+            .serverPredictionIsAvailable = true,
+            .serverPredictionAgeSeconds = 30};
+    SatelliteData satelliteData6 = {
+            .svid = 17,
+            .constellation = GnssConstellationType::GLONASS,
+            .ephemerisType = SatelliteEphemerisType::EPHEMERIS,
+            .ephemerisSource = SatellitePvt::SatelliteEphemerisSource::SERVER_LONG_TERM,
+            .ephemerisHealth = SatelliteEphemerisHealth::GOOD,
+            .ephemerisAgeSeconds = 12,
+            .serverPredictionIsAvailable = true,
+            .serverPredictionAgeSeconds = 30};
+    SatelliteData satelliteData7 = {
+            .svid = 18,
+            .constellation = GnssConstellationType::GLONASS,
+            .ephemerisType = SatelliteEphemerisType::EPHEMERIS,
+            .ephemerisSource = SatellitePvt::SatelliteEphemerisSource::SERVER_LONG_TERM,
+            .ephemerisHealth = SatelliteEphemerisHealth::GOOD,
+            .ephemerisAgeSeconds = 12,
+            .serverPredictionIsAvailable = true,
+            .serverPredictionAgeSeconds = 30};
+    SatelliteData satelliteData8 = {
+            .svid = 10,
+            .constellation = GnssConstellationType::GLONASS,
+            .ephemerisType = SatelliteEphemerisType::EPHEMERIS,
+            .ephemerisSource = SatellitePvt::SatelliteEphemerisSource::SERVER_LONG_TERM,
+            .ephemerisHealth = SatelliteEphemerisHealth::GOOD,
+            .ephemerisAgeSeconds = 12,
+            .serverPredictionIsAvailable = true,
+            .serverPredictionAgeSeconds = 30};
+    SatelliteData satelliteData9 = {
+            .svid = 3,
+            .constellation = GnssConstellationType::IRNSS,
+            .ephemerisType = SatelliteEphemerisType::EPHEMERIS,
+            .ephemerisSource = SatellitePvt::SatelliteEphemerisSource::SERVER_LONG_TERM,
+            .ephemerisHealth = SatelliteEphemerisHealth::GOOD,
+            .ephemerisAgeSeconds = 12,
+            .serverPredictionIsAvailable = true,
+            .serverPredictionAgeSeconds = 30};
+    std::vector<SatelliteData> satelliteDataArrayDebug = {
+            satelliteData1, satelliteData2, satelliteData3, satelliteData4, satelliteData5,
+            satelliteData6, satelliteData7, satelliteData8, satelliteData9};
     debugData->position = positionDebug;
     debugData->time = timeDebug;
     debugData->satelliteDataArray = satelliteDataArrayDebug;
diff --git a/gnss/aidl/default/GnssDebug.h b/gnss/aidl/default/GnssDebug.h
index 001d47c..b6844b3 100644
--- a/gnss/aidl/default/GnssDebug.h
+++ b/gnss/aidl/default/GnssDebug.h
@@ -20,6 +20,8 @@
 
 namespace aidl::android::hardware::gnss {
 
+class Gnss;
+
 struct GnssDebug : public BnGnssDebug {
   public:
     ndk::ScopedAStatus getDebugData(DebugData* debugData) override;
diff --git a/gnss/aidl/default/GnssMeasurementInterface.cpp b/gnss/aidl/default/GnssMeasurementInterface.cpp
index f324213..db1b8c6 100644
--- a/gnss/aidl/default/GnssMeasurementInterface.cpp
+++ b/gnss/aidl/default/GnssMeasurementInterface.cpp
@@ -146,15 +146,18 @@
     mIsActive = false;
     mGnss->setGnssMeasurementEnabled(false);
     mThreadBlocker.notify();
-    for (auto iter = mThreads.begin(); iter != mThreads.end(); ++iter) {
+    for (auto iter = mThreads.begin(); iter != mThreads.end();) {
         if (iter->joinable()) {
-            mFutures.push_back(std::async(std::launch::async, [this, iter] {
-                iter->join();
-                mThreads.erase(iter);
-            }));
-        } else {
-            mThreads.erase(iter);
+            // Store the thread object by value
+            std::thread threadToMove = std::move(*iter);
+
+            mFutures.push_back(std::async(std::launch::async,
+                                          [threadToMove = std::move(threadToMove)]() mutable {
+                                              ALOGD("joining thread");
+                                              threadToMove.join();
+                                          }));
         }
+        iter = mThreads.erase(iter);
     }
 }
 
diff --git a/gnss/aidl/default/GnssNavigationMessageInterface.cpp b/gnss/aidl/default/GnssNavigationMessageInterface.cpp
index c262dc6..eb1d655 100644
--- a/gnss/aidl/default/GnssNavigationMessageInterface.cpp
+++ b/gnss/aidl/default/GnssNavigationMessageInterface.cpp
@@ -90,15 +90,18 @@
     ALOGD("stop");
     mIsActive = false;
     mThreadBlocker.notify();
-    for (auto iter = mThreads.begin(); iter != mThreads.end(); ++iter) {
+    for (auto iter = mThreads.begin(); iter != mThreads.end();) {
         if (iter->joinable()) {
-            mFutures.push_back(std::async(std::launch::async, [this, iter] {
-                iter->join();
-                mThreads.erase(iter);
-            }));
-        } else {
-            mThreads.erase(iter);
+            // Store the thread object by value
+            std::thread threadToMove = std::move(*iter);
+
+            mFutures.push_back(std::async(std::launch::async,
+                                          [threadToMove = std::move(threadToMove)]() mutable {
+                                              ALOGD("joining thread");
+                                              threadToMove.join();
+                                          }));
         }
+        iter = mThreads.erase(iter);
     }
 }
 
diff --git a/gnss/aidl/vts/gnss_hal_test_cases.cpp b/gnss/aidl/vts/gnss_hal_test_cases.cpp
index 4309187..f7408d8 100644
--- a/gnss/aidl/vts/gnss_hal_test_cases.cpp
+++ b/gnss/aidl/vts/gnss_hal_test_cases.cpp
@@ -1149,40 +1149,139 @@
     sp<IGnssDebug> iGnssDebug;
     auto status = aidl_gnss_hal_->getExtensionGnssDebug(&iGnssDebug);
     ASSERT_TRUE(status.isOk());
-
-    if (!IsAutomotiveDevice()) {
-        ASSERT_TRUE(iGnssDebug != nullptr);
-
-        IGnssDebug::DebugData data;
-        auto status = iGnssDebug->getDebugData(&data);
-        ASSERT_TRUE(status.isOk());
-
-        if (data.position.valid) {
-            ASSERT_TRUE(data.position.latitudeDegrees >= -90 &&
-                        data.position.latitudeDegrees <= 90);
-            ASSERT_TRUE(data.position.longitudeDegrees >= -180 &&
-                        data.position.longitudeDegrees <= 180);
-            ASSERT_TRUE(data.position.altitudeMeters >= -1000 &&  // Dead Sea: -414m
-                        data.position.altitudeMeters <= 20000);   // Mount Everest: 8850m
-            ASSERT_TRUE(data.position.speedMetersPerSec >= 0 &&
-                        data.position.speedMetersPerSec <= 600);
-            ASSERT_TRUE(data.position.bearingDegrees >= -360 &&
-                        data.position.bearingDegrees <= 360);
-            ASSERT_TRUE(data.position.horizontalAccuracyMeters > 0 &&
-                        data.position.horizontalAccuracyMeters <= 20000000);
-            ASSERT_TRUE(data.position.verticalAccuracyMeters > 0 &&
-                        data.position.verticalAccuracyMeters <= 20000);
-            ASSERT_TRUE(data.position.speedAccuracyMetersPerSecond > 0 &&
-                        data.position.speedAccuracyMetersPerSecond <= 500);
-            ASSERT_TRUE(data.position.bearingAccuracyDegrees > 0 &&
-                        data.position.bearingAccuracyDegrees <= 180);
-            ASSERT_TRUE(data.position.ageSeconds >= 0);
-        }
-        ASSERT_TRUE(data.time.timeEstimateMs >= 1483228800000);  // Jan 01 2017 00:00:00 GMT.
-        ASSERT_TRUE(data.time.timeUncertaintyNs > 0);
-        ASSERT_TRUE(data.time.frequencyUncertaintyNsPerSec > 0 &&
-                    data.time.frequencyUncertaintyNsPerSec <= 2.0e5);  // 200 ppm
+    if (IsAutomotiveDevice()) {
+        return;
     }
+    ASSERT_TRUE(iGnssDebug != nullptr);
+
+    IGnssDebug::DebugData data;
+    status = iGnssDebug->getDebugData(&data);
+    ASSERT_TRUE(status.isOk());
+    Utils::checkPositionDebug(data);
+
+    // Additional GnssDebug tests for AIDL version >= 4 (launched in Android 15(V)+)
+    if (aidl_gnss_hal_->getInterfaceVersion() <= 3) {
+        return;
+    }
+
+    // Start location and check the consistency between SvStatus and DebugData
+    aidl_gnss_cb_->location_cbq_.reset();
+    aidl_gnss_cb_->sv_info_list_cbq_.reset();
+    StartAndCheckLocations(/* count= */ 2);
+    int location_called_count = aidl_gnss_cb_->location_cbq_.calledCount();
+    ALOGD("Observed %d GnssSvStatus, while awaiting 2 locations (%d received)",
+          aidl_gnss_cb_->sv_info_list_cbq_.size(), location_called_count);
+
+    // Wait for up to kNumSvInfoLists events for kTimeoutSeconds for each event.
+    int kTimeoutSeconds = 2;
+    int kNumSvInfoLists = 4;
+    std::list<std::vector<IGnssCallback::GnssSvInfo>> sv_info_lists;
+    std::vector<IGnssCallback::GnssSvInfo> last_sv_info_list;
+
+    do {
+        EXPECT_GT(aidl_gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_lists, kNumSvInfoLists,
+                                                            kTimeoutSeconds),
+                  0);
+        if (!sv_info_lists.empty()) {
+            last_sv_info_list = sv_info_lists.back();
+            ALOGD("last_sv_info size = %d", (int)last_sv_info_list.size());
+        }
+    } while (!sv_info_lists.empty() && last_sv_info_list.size() == 0);
+
+    StopAndClearLocations();
+
+    status = iGnssDebug->getDebugData(&data);
+    Utils::checkPositionDebug(data);
+
+    // Validate SatelliteEphemerisType, SatelliteEphemerisSource, SatelliteEphemerisHealth
+    for (auto sv_info : last_sv_info_list) {
+        if ((sv_info.svFlag & static_cast<int>(IGnssCallback::GnssSvFlags::USED_IN_FIX)) == 0) {
+            continue;
+        }
+        ALOGD("Found usedInFix const: %d, svid: %d", static_cast<int>(sv_info.constellation),
+              sv_info.svid);
+        bool foundDebugData = false;
+        for (auto satelliteData : data.satelliteDataArray) {
+            if (satelliteData.constellation == sv_info.constellation &&
+                satelliteData.svid == sv_info.svid) {
+                foundDebugData = true;
+                ALOGD("Found GnssDebug data for this sv.");
+                EXPECT_TRUE(satelliteData.serverPredictionIsAvailable ||
+                            satelliteData.ephemerisType ==
+                                    IGnssDebug::SatelliteEphemerisType::EPHEMERIS);
+                // for satellites with ephType=0, they need ephHealth=0 if used-in-fix
+                if (satelliteData.ephemerisType == IGnssDebug::SatelliteEphemerisType::EPHEMERIS) {
+                    EXPECT_TRUE(satelliteData.ephemerisHealth ==
+                                IGnssDebug::SatelliteEphemerisHealth::GOOD);
+                }
+                break;
+            }
+        }
+        // Every Satellite where GnssStatus says it is used-in-fix has a valid ephemeris - i.e. it's
+        // it shows either a serverPredAvail: 1, or a ephType=0
+        EXPECT_TRUE(foundDebugData);
+    }
+
+    bool hasServerPredictionAvailable = false;
+    bool hasNoneZeroServerPredictionAgeSeconds = false;
+    bool hasNoneDemodEphSource = false;
+    for (auto satelliteData : data.satelliteDataArray) {
+        // for satellites with serverPredAvail: 1, the serverPredAgeSec: is not 0 for all
+        // satellites (at least not on 2 fixes in a row - it could get lucky once)
+        if (satelliteData.serverPredictionIsAvailable) {
+            hasServerPredictionAvailable = true;
+            if (satelliteData.serverPredictionAgeSeconds != 0) {
+                hasNoneZeroServerPredictionAgeSeconds = true;
+            }
+        }
+        // for satellites with ephType=0, they need ephSource 0-3
+        if (satelliteData.ephemerisType == IGnssDebug::SatelliteEphemerisType::EPHEMERIS) {
+            EXPECT_TRUE(satelliteData.ephemerisSource >=
+                                SatellitePvt::SatelliteEphemerisSource::DEMODULATED &&
+                        satelliteData.ephemerisSource <=
+                                SatellitePvt::SatelliteEphemerisSource::OTHER);
+            if (satelliteData.ephemerisSource !=
+                SatellitePvt::SatelliteEphemerisSource::DEMODULATED) {
+                hasNoneDemodEphSource = true;
+            }
+        }
+    }
+    if (hasNoneDemodEphSource && hasServerPredictionAvailable) {
+        EXPECT_TRUE(hasNoneZeroServerPredictionAgeSeconds);
+    }
+
+    /**
+    - Gnss Location Data:: should show some valid information, ideally reasonably close (+/-1km) to
+        the Location output - at least after the 2nd valid location output (maybe in general, wait
+        for 2 good Location outputs before checking this, in case they don't update the assistance
+        until after they output the Location)
+    */
+    double distanceM =
+            Utils::distanceMeters(data.position.latitudeDegrees, data.position.longitudeDegrees,
+                                  aidl_gnss_cb_->last_location_.latitudeDegrees,
+                                  aidl_gnss_cb_->last_location_.longitudeDegrees);
+    ALOGD("distance between debug position and last position: %.2lf", distanceM);
+    EXPECT_LT(distanceM, 1000.0);  // 1km
+
+    /**
+    - Gnss Time Data:: timeEstimate should be reasonably close to the current GPS time.
+    - Gnss Time Data:: timeUncertaintyNs should always be > 0 and < 5e9 (could be large due
+        to solve-for-time type solutions)
+    - Gnss Time Data:: frequencyUncertaintyNsPerSec: should always be > 0 and < 1000 (1000 ns/s
+        corresponds to roughly a 300 m/s speed error, which should be pretty rare)
+    */
+    ALOGD("debug time: %" PRId64 ", position time: %" PRId64, data.time.timeEstimateMs,
+          aidl_gnss_cb_->last_location_.timestampMillis);
+    // Allowing 5s between the last location time and the current GPS time
+    EXPECT_LT(abs(data.time.timeEstimateMs - aidl_gnss_cb_->last_location_.timestampMillis), 5000);
+
+    ALOGD("debug time uncertainty: %f ns", data.time.timeUncertaintyNs);
+    EXPECT_GT(data.time.timeUncertaintyNs, 0);
+    EXPECT_LT(data.time.timeUncertaintyNs, 5e9);
+
+    ALOGD("debug freq uncertainty: %f ns/s", data.time.frequencyUncertaintyNsPerSec);
+    EXPECT_GT(data.time.frequencyUncertaintyNsPerSec, 0);
+    EXPECT_LT(data.time.frequencyUncertaintyNsPerSec, 1000);
 }
 
 /*
diff --git a/gnss/common/utils/vts/Utils.cpp b/gnss/common/utils/vts/Utils.cpp
index 69e2b34..e3ff0f3 100644
--- a/gnss/common/utils/vts/Utils.cpp
+++ b/gnss/common/utils/vts/Utils.cpp
@@ -20,6 +20,7 @@
 #include "gtest/gtest.h"
 
 #include <cutils/properties.h>
+#include <math.h>
 #include <utils/SystemClock.h>
 
 namespace android {
@@ -58,6 +59,31 @@
     checkElapsedRealtime(location.elapsedRealtime);
 }
 
+void Utils::checkPositionDebug(android::hardware::gnss::IGnssDebug::DebugData data) {
+    if (data.position.valid) {
+        ASSERT_TRUE(data.position.latitudeDegrees >= -90 && data.position.latitudeDegrees <= 90);
+        ASSERT_TRUE(data.position.longitudeDegrees >= -180 &&
+                    data.position.longitudeDegrees <= 180);
+        ASSERT_TRUE(data.position.altitudeMeters >= -1000 &&  // Dead Sea: -414m
+                    data.position.altitudeMeters <= 20000);   // Mount Everest: 8850m
+        ASSERT_TRUE(data.position.speedMetersPerSec >= 0 && data.position.speedMetersPerSec <= 600);
+        ASSERT_TRUE(data.position.bearingDegrees >= -360 && data.position.bearingDegrees <= 360);
+        ASSERT_TRUE(data.position.horizontalAccuracyMeters > 0 &&
+                    data.position.horizontalAccuracyMeters <= 20000000);
+        ASSERT_TRUE(data.position.verticalAccuracyMeters > 0 &&
+                    data.position.verticalAccuracyMeters <= 20000);
+        ASSERT_TRUE(data.position.speedAccuracyMetersPerSecond > 0 &&
+                    data.position.speedAccuracyMetersPerSecond <= 500);
+        ASSERT_TRUE(data.position.bearingAccuracyDegrees > 0 &&
+                    data.position.bearingAccuracyDegrees <= 180);
+        ASSERT_TRUE(data.position.ageSeconds >= 0);
+    }
+    ASSERT_TRUE(data.time.timeEstimateMs >= 1483228800000);  // Jan 01 2017 00:00:00 GMT.
+    ASSERT_TRUE(data.time.timeUncertaintyNs > 0);
+    ASSERT_TRUE(data.time.frequencyUncertaintyNsPerSec > 0 &&
+                data.time.frequencyUncertaintyNsPerSec <= 2.0e5);  // 200 ppm
+}
+
 void Utils::checkElapsedRealtime(const ElapsedRealtime& elapsedRealtime) {
     ASSERT_TRUE(elapsedRealtime.flags >= 0 &&
                 elapsedRealtime.flags <= (ElapsedRealtime::HAS_TIMESTAMP_NS |
@@ -282,6 +308,17 @@
     return strncmp(buffer, "automotive", PROPERTY_VALUE_MAX) == 0;
 }
 
+double Utils::distanceMeters(double lat1, double lon1, double lat2, double lon2) {
+    double R = 6378.137;  // Radius of earth in KM
+    double dLat = lat2 * M_PI / 180 - lat1 * M_PI / 180;
+    double dLon = lon2 * M_PI / 180 - lon1 * M_PI / 180;
+    double a = sin(dLat / 2) * sin(dLat / 2) +
+               cos(lat1 * M_PI / 180) * cos(lat2 * M_PI / 180) * sin(dLon / 2) * sin(dLon / 2);
+    double c = 2 * atan2(sqrt(a), sqrt(1 - a));
+    double d = R * c;
+    return d * 1000;  // meters
+}
+
 }  // namespace common
 }  // namespace gnss
 }  // namespace hardware
diff --git a/gnss/common/utils/vts/include/Utils.h b/gnss/common/utils/vts/include/Utils.h
index 7b89078..62d409a 100644
--- a/gnss/common/utils/vts/include/Utils.h
+++ b/gnss/common/utils/vts/include/Utils.h
@@ -43,6 +43,7 @@
 
     static void checkElapsedRealtime(
             const android::hardware::gnss::ElapsedRealtime& elapsedRealtime);
+    static void checkPositionDebug(android::hardware::gnss::IGnssDebug::DebugData data);
 
     static const android::hardware::gnss::GnssLocation getMockLocation(
             double latitudeDegrees, double longitudeDegrees, double horizontalAccuracyMeters);
@@ -57,6 +58,7 @@
             V2_0::GnssConstellationType constellation);
 
     static bool isAutomotiveDevice();
+    static double distanceMeters(double lat1, double lon1, double lat2, double lon2);
 
   private:
     template <class T>
diff --git a/light/OWNERS b/light/OWNERS
index d1da8a7..9f312b0 100644
--- a/light/OWNERS
+++ b/light/OWNERS
@@ -1,5 +1,3 @@
 # Bug Component: 185877106
 
-michaelwr@google.com
-santoscordon@google.com
-philipjunker@google.com
+file:platform/frameworks/base:/services/core/java/com/android/server/display/OWNERS
\ No newline at end of file
diff --git a/media/bufferpool/aidl/default/Accessor.cpp b/media/bufferpool/aidl/default/Accessor.cpp
index 3d206ac..423fd84 100644
--- a/media/bufferpool/aidl/default/Accessor.cpp
+++ b/media/bufferpool/aidl/default/Accessor.cpp
@@ -16,6 +16,8 @@
 #define LOG_TAG "AidlBufferPoolAcc"
 //#define LOG_NDEBUG 0
 
+#include <android-base/no_destructor.h>
+
 #include <sys/types.h>
 #include <stdint.h>
 #include <time.h>
@@ -41,7 +43,25 @@
 #endif
 
 static constexpr uint32_t kSeqIdMax = 0x7fffffff;
-uint32_t Accessor::sSeqId = time(nullptr) & kSeqIdMax;
+
+Accessor::ConnectionIdGenerator::ConnectionIdGenerator() {
+    mSeqId = static_cast<uint32_t>(time(nullptr) & kSeqIdMax);
+    mPid = static_cast<int32_t>(getpid());
+}
+
+ConnectionId Accessor::ConnectionIdGenerator::getConnectionId() {
+    uint32_t seq;
+    {
+        std::lock_guard<std::mutex> l(mLock);
+        seq = mSeqId;
+        if (mSeqId == kSeqIdMax) {
+            mSeqId = 0;
+        } else {
+            ++mSeqId;
+        }
+    }
+    return (int64_t)mPid << 32 | seq | kSeqIdVndkBit;
+}
 
 namespace {
 // anonymous namespace
@@ -239,13 +259,14 @@
         uint32_t *pMsgId,
         StatusDescriptor* statusDescPtr,
         InvalidationDescriptor* invDescPtr) {
+    static ::android::base::NoDestructor<ConnectionIdGenerator> sConIdGenerator;
     std::shared_ptr<Connection> newConnection = ::ndk::SharedRefBase::make<Connection>();
     BufferPoolStatus status = ResultStatus::CRITICAL_ERROR;
     {
         std::lock_guard<std::mutex> lock(mBufferPool.mMutex);
         if (newConnection) {
             int32_t pid = getpid();
-            ConnectionId id = (int64_t)pid << 32 | sSeqId | kSeqIdVndkBit;
+            ConnectionId id = sConIdGenerator->getConnectionId();
             status = mBufferPool.mObserver.open(id, statusDescPtr);
             if (status == ResultStatus::OK) {
                 newConnection->initialize(ref<Accessor>(), id);
@@ -255,11 +276,6 @@
                 mBufferPool.mConnectionIds.insert(id);
                 mBufferPool.mInvalidationChannel.getDesc(invDescPtr);
                 mBufferPool.mInvalidation.onConnect(id, observer);
-                if (sSeqId == kSeqIdMax) {
-                   sSeqId = 0;
-                } else {
-                    ++sSeqId;
-                }
             }
 
         }
diff --git a/media/bufferpool/aidl/default/Accessor.h b/media/bufferpool/aidl/default/Accessor.h
index 85e2fa7..0ebe347 100644
--- a/media/bufferpool/aidl/default/Accessor.h
+++ b/media/bufferpool/aidl/default/Accessor.h
@@ -189,7 +189,14 @@
 private:
     // ConnectionId = pid : (timestamp_created + seqId)
     // in order to guarantee uniqueness for each connection
-    static uint32_t sSeqId;
+    struct ConnectionIdGenerator {
+        int32_t mPid;
+        uint32_t mSeqId;
+        std::mutex mLock;
+
+        ConnectionIdGenerator();
+        ConnectionId getConnectionId();
+    };
 
     const std::shared_ptr<BufferPoolAllocator> mAllocator;
     nsecs_t mScheduleEvictTs;
diff --git a/media/bufferpool/aidl/default/Android.bp b/media/bufferpool/aidl/default/Android.bp
index 72cd903..3c31446 100644
--- a/media/bufferpool/aidl/default/Android.bp
+++ b/media/bufferpool/aidl/default/Android.bp
@@ -29,6 +29,9 @@
     export_include_dirs: [
         "include",
     ],
+    header_libs: [
+        "libbase_headers",
+    ],
     shared_libs: [
         "libbinder_ndk",
         "libcutils",
diff --git a/security/keymint/aidl/vts/functional/KeyMintTest.cpp b/security/keymint/aidl/vts/functional/KeyMintTest.cpp
index 3c49a82..527b5e0 100644
--- a/security/keymint/aidl/vts/functional/KeyMintTest.cpp
+++ b/security/keymint/aidl/vts/functional/KeyMintTest.cpp
@@ -2059,7 +2059,7 @@
         extra_tags.Authorization(TAG_ATTESTATION_ID_IMEI, imei.data(), imei.size());
     }
     string second_imei = get_imei(1);
-    if (!second_imei.empty()) {
+    if (!second_imei.empty() && isSecondImeiIdAttestationRequired()) {
         extra_tags.Authorization(TAG_ATTESTATION_ID_SECOND_IMEI, second_imei.data(),
                                  second_imei.size());
     }
@@ -2135,7 +2135,7 @@
         extra_tags.Authorization(TAG_ATTESTATION_ID_IMEI, imei.data(), imei.size());
     }
     string second_imei = get_imei(1);
-    if (!second_imei.empty()) {
+    if (!second_imei.empty() && isSecondImeiIdAttestationRequired()) {
         extra_tags.Authorization(TAG_ATTESTATION_ID_SECOND_IMEI, second_imei.data(),
                                  second_imei.size());
     }
diff --git a/security/secretkeeper/aidl/vts/secretkeeper_cli.rs b/security/secretkeeper/aidl/vts/secretkeeper_cli.rs
index 377ed37..9fbfb45 100644
--- a/security/secretkeeper/aidl/vts/secretkeeper_cli.rs
+++ b/security/secretkeeper/aidl/vts/secretkeeper_cli.rs
@@ -25,7 +25,7 @@
 use clap::{Args, Parser, Subcommand};
 use coset::CborSerializable;
 use dice_policy_builder::{
-    policy_for_dice_chain, CertIndex, ConstraintSpec, ConstraintType, MissingAction,
+    policy_for_dice_chain, ConstraintSpec, ConstraintType, MissingAction, TargetEntry,
     WILDCARD_FULL_ARRAY,
 };
 
@@ -131,33 +131,35 @@
     }
 
     /// Construct a sealing policy on the DICE chain with constraints:
-    /// 1. `ExactMatch` on `AUTHORITY_HASH` (non-optional).
-    /// 2. `ExactMatch` on `MODE` (non-optional).
-    /// 3. `GreaterOrEqual` on `SECURITY_VERSION` (optional).
+    /// 1. `ExactMatch` on `AUTHORITY_HASH` (non-optional) on all nodes.
+    /// 2. `ExactMatch` on `MODE` (non-optional) on all nodes.
+    /// 3. `GreaterOrEqual` on `SECURITY_VERSION` (optional) on all nodes.
+    /// 4. The  DiceChainEntry corresponding to "AVB" contains SubcomponentDescriptor, for each of those:
+    ///     a) GreaterOrEqual on SECURITY_VERSION (Required)
+    //      b) ExactMatch on AUTHORITY_HASH (Required).
     fn sealing_policy(&self) -> Result<Vec<u8>> {
         let dice =
             self.dice_artifacts.explicit_key_dice_chain().context("extract explicit DICE chain")?;
 
-        let constraint_spec = [
+        let constraint_spec = vec![
             ConstraintSpec::new(
                 ConstraintType::ExactMatch,
                 vec![AUTHORITY_HASH],
                 MissingAction::Fail,
-                CertIndex::All,
+                TargetEntry::All,
             ),
             ConstraintSpec::new(
                 ConstraintType::ExactMatch,
                 vec![MODE],
                 MissingAction::Fail,
-                CertIndex::All,
+                TargetEntry::All,
             ),
             ConstraintSpec::new(
                 ConstraintType::GreaterOrEqual,
                 vec![CONFIG_DESC, SECURITY_VERSION],
                 MissingAction::Ignore,
-                CertIndex::All,
+                TargetEntry::All,
             ),
-            // Constraints on sub components in the second last DiceChainEntry
             ConstraintSpec::new(
                 ConstraintType::GreaterOrEqual,
                 vec![
@@ -167,7 +169,7 @@
                     SUBCOMPONENT_SECURITY_VERSION,
                 ],
                 MissingAction::Fail,
-                CertIndex::FromEnd(1),
+                TargetEntry::ByName("AVB".to_string()),
             ),
             ConstraintSpec::new(
                 ConstraintType::ExactMatch,
@@ -178,10 +180,10 @@
                     SUBCOMPONENT_AUTHORITY_HASH,
                 ],
                 MissingAction::Fail,
-                CertIndex::FromEnd(1),
+                TargetEntry::ByName("AVB".to_string()),
             ),
         ];
-        policy_for_dice_chain(dice, &constraint_spec)
+        policy_for_dice_chain(dice, constraint_spec)
             .unwrap()
             .to_vec()
             .context("serialize DICE policy")
diff --git a/security/secretkeeper/aidl/vts/secretkeeper_test_client.rs b/security/secretkeeper/aidl/vts/secretkeeper_test_client.rs
index 595dc7a..449a99a 100644
--- a/security/secretkeeper/aidl/vts/secretkeeper_test_client.rs
+++ b/security/secretkeeper/aidl/vts/secretkeeper_test_client.rs
@@ -20,7 +20,7 @@
 use authgraph_boringssl as boring;
 use authgraph_core::key;
 use coset::{CborOrdering, CborSerializable, CoseEncrypt0, CoseKey};
-use dice_policy_builder::{CertIndex, ConstraintSpec, ConstraintType, MissingAction, WILDCARD_FULL_ARRAY, policy_for_dice_chain};
+use dice_policy_builder::{TargetEntry, ConstraintSpec, ConstraintType, MissingAction, WILDCARD_FULL_ARRAY, policy_for_dice_chain};
 use rdroidtest::{ignore_if, rdroidtest};
 use secretkeeper_client::dice::OwnedDiceArtifactsWithExplicitKey;
 use secretkeeper_client::{SkSession, Error as SkClientError};
@@ -312,30 +312,29 @@
 /// 1. ExactMatch on AUTHORITY_HASH (non-optional).
 /// 2. ExactMatch on MODE (non-optional).
 /// 3. GreaterOrEqual on SECURITY_VERSION (optional).
-/// 4. The second last DiceChainEntry contain SubcomponentDescriptor, for each of those:
+/// 4. The DiceChainEntry corresponding to "AVB" contains SubcomponentDescriptor, for each of those:
 ///     a) GreaterOrEqual on SECURITY_VERSION (Required)
 //      b) ExactMatch on AUTHORITY_HASH (Required).
 fn sealing_policy(dice: &[u8]) -> Vec<u8> {
-    let constraint_spec = [
+    let constraint_spec = vec![
         ConstraintSpec::new(
             ConstraintType::ExactMatch,
             vec![AUTHORITY_HASH],
             MissingAction::Fail,
-            CertIndex::All,
+            TargetEntry::All,
         ),
         ConstraintSpec::new(
             ConstraintType::ExactMatch,
             vec![MODE],
             MissingAction::Fail,
-            CertIndex::All,
+            TargetEntry::All,
         ),
         ConstraintSpec::new(
             ConstraintType::GreaterOrEqual,
             vec![CONFIG_DESC, SECURITY_VERSION],
             MissingAction::Ignore,
-            CertIndex::All,
+            TargetEntry::All,
         ),
-        // Constraints on sub components in the second last DiceChainEntry
         ConstraintSpec::new(
             ConstraintType::GreaterOrEqual,
             vec![
@@ -345,7 +344,7 @@
                 SUBCOMPONENT_SECURITY_VERSION,
             ],
             MissingAction::Fail,
-            CertIndex::FromEnd(1),
+            TargetEntry::ByName("AVB".to_string()),
         ),
         ConstraintSpec::new(
             ConstraintType::ExactMatch,
@@ -356,11 +355,11 @@
                 SUBCOMPONENT_AUTHORITY_HASH,
             ],
             MissingAction::Fail,
-            CertIndex::FromEnd(1),
+            TargetEntry::ByName("AVB".to_string()),
         ),
     ];
 
-    policy_for_dice_chain(dice, &constraint_spec).unwrap().to_vec().unwrap()
+    policy_for_dice_chain(dice, constraint_spec).unwrap().to_vec().unwrap()
 }
 
 /// Perform AuthGraph key exchange, returning the session keys and session ID.
diff --git a/sensors/common/vts/2_X/VtsHalSensorsV2_XTargetTest.h b/sensors/common/vts/2_X/VtsHalSensorsV2_XTargetTest.h
index becc93c..51879b2 100644
--- a/sensors/common/vts/2_X/VtsHalSensorsV2_XTargetTest.h
+++ b/sensors/common/vts/2_X/VtsHalSensorsV2_XTargetTest.h
@@ -603,42 +603,55 @@
     EventCallback callback;
     getEnvironment()->registerCallback(&callback);
 
-    for (const SensorInfoType& sensor : sensors) {
-        // Configure and activate the sensor
-        batch(sensor.sensorHandle, sensor.maxDelay, 0 /* maxReportLatencyNs */);
-        activate(sensor.sensorHandle, activateSensor);
+    // 10 sensors per group
+    constexpr size_t kSensorsPerGroup = 10;
+    for (size_t sensorOffset = 0; sensorOffset < sensors.size();
+         sensorOffset += kSensorsPerGroup) {
+        std::vector<SensorInfoType> sensorGroup(
+            sensors.begin() + sensorOffset,
+            sensors.begin() +
+                std::min(sensorOffset + kSensorsPerGroup, sensors.size()));
 
-        // Flush the sensor
-        for (int32_t i = 0; i < flushCalls; i++) {
+        for (const SensorInfoType& sensor : sensorGroup) {
+            // Configure and activate the sensor
+            batch(sensor.sensorHandle, sensor.maxDelay, 0 /* maxReportLatencyNs */);
+            activate(sensor.sensorHandle, activateSensor);
+
+            // Flush the sensor
+            for (int32_t i = 0; i < flushCalls; i++) {
+                SCOPED_TRACE(::testing::Message()
+                             << "Flush " << i << "/" << flushCalls << ": "
+                             << " handle=0x" << std::hex << std::setw(8) << std::setfill('0')
+                             << sensor.sensorHandle << std::dec
+                             << " type=" << static_cast<int>(sensor.type)
+                             << " name=" << sensor.name);
+
+                Result flushResult = flush(sensor.sensorHandle);
+                EXPECT_EQ(flushResult, expectedResponse);
+            }
+        }
+
+        // Wait up to one second for the flush events
+        callback.waitForFlushEvents(sensorGroup, flushCalls,
+                                    std::chrono::milliseconds(1000) /* timeout */);
+
+        // Deactivate all sensors after waiting for flush events so pending flush events are not
+        // abandoned by the HAL.
+        for (const SensorInfoType& sensor : sensorGroup) {
+            activate(sensor.sensorHandle, false);
+        }
+
+        // Check that the correct number of flushes are present for each sensor
+        for (const SensorInfoType& sensor : sensorGroup) {
             SCOPED_TRACE(::testing::Message()
-                         << "Flush " << i << "/" << flushCalls << ": "
                          << " handle=0x" << std::hex << std::setw(8) << std::setfill('0')
                          << sensor.sensorHandle << std::dec
-                         << " type=" << static_cast<int>(sensor.type) << " name=" << sensor.name);
-
-            Result flushResult = flush(sensor.sensorHandle);
-            EXPECT_EQ(flushResult, expectedResponse);
+                         << " type=" << static_cast<int>(sensor.type)
+                         << " name=" << sensor.name);
+            ASSERT_EQ(callback.getFlushCount(sensor.sensorHandle), expectedFlushCount);
         }
     }
-
-    // Wait up to one second for the flush events
-    callback.waitForFlushEvents(sensors, flushCalls, std::chrono::milliseconds(1000) /* timeout */);
-
-    // Deactivate all sensors after waiting for flush events so pending flush events are not
-    // abandoned by the HAL.
-    for (const SensorInfoType& sensor : sensors) {
-        activate(sensor.sensorHandle, false);
-    }
     getEnvironment()->unregisterCallback();
-
-    // Check that the correct number of flushes are present for each sensor
-    for (const SensorInfoType& sensor : sensors) {
-        SCOPED_TRACE(::testing::Message()
-                     << " handle=0x" << std::hex << std::setw(8) << std::setfill('0')
-                     << sensor.sensorHandle << std::dec << " type=" << static_cast<int>(sensor.type)
-                     << " name=" << sensor.name);
-        ASSERT_EQ(callback.getFlushCount(sensor.sensorHandle), expectedFlushCount);
-    }
 }
 
 TEST_P(SensorsHidlTest, FlushSensor) {
diff --git a/thermal/aidl/vts/VtsHalThermalTargetTest.cpp b/thermal/aidl/vts/VtsHalThermalTargetTest.cpp
index d36d986..7f33e2d 100644
--- a/thermal/aidl/vts/VtsHalThermalTargetTest.cpp
+++ b/thermal/aidl/vts/VtsHalThermalTargetTest.cpp
@@ -352,8 +352,8 @@
 // @VsrTest = VSR-3.2.5-002
 TEST_P(ThermalAidlTest, SkinTemperatureThresholdsTest) {
     auto apiLevel = ::android::base::GetIntProperty<int32_t>("ro.vendor.api_level", 0);
-    if (apiLevel < 35) {
-        GTEST_SKIP() << "Skipping test as the vendor level is below 35: " << apiLevel;
+    if (apiLevel < 202404) {
+        GTEST_SKIP() << "Skipping test as the vendor level is below 202404: " << apiLevel;
     }
     for (const auto& feature : kNonHandheldFeatures) {
         if (::testing::deviceSupportsFeature(feature.c_str())) {
diff --git a/wifi/aidl/vts/functional/wifi_sta_iface_aidl_test.cpp b/wifi/aidl/vts/functional/wifi_sta_iface_aidl_test.cpp
index c87fe13..f659bf6 100644
--- a/wifi/aidl/vts/functional/wifi_sta_iface_aidl_test.cpp
+++ b/wifi/aidl/vts/functional/wifi_sta_iface_aidl_test.cpp
@@ -148,7 +148,7 @@
  * Ensures the APF packet filter is fully supported as required in VSR 14:
  * https://docs.partner.android.com/gms/policies/vsr/vsr-14
  */
-// @VsrTest = 5.3.12
+// @VsrTest = VSR-5.3.12-001|VSR-5.3.12-003|VSR-5.3.12-004|VSR-5.3.12-009
 TEST_P(WifiStaIfaceAidlTest, CheckApfIsSupported) {
     const std::string oem_key1 = getPropertyString("ro.oem.key1");
     if (isTvDevice()) {
diff --git a/wifi/legacy_headers/include/hardware_legacy/wifi_hal.h b/wifi/legacy_headers/include/hardware_legacy/wifi_hal.h
index 4262913..9baa2c7 100644
--- a/wifi/legacy_headers/include/hardware_legacy/wifi_hal.h
+++ b/wifi/legacy_headers/include/hardware_legacy/wifi_hal.h
@@ -715,7 +715,7 @@
 
 /* Wi-Fi coex channel avoidance support */
 
-#define WIFI_COEX_NO_POWER_CAP (int32_t)0x7FFFFFF
+#define WIFI_COEX_NO_POWER_CAP (int32_t)0x7FFFFFFF
 
 typedef enum {
     WIFI_AWARE = 1 << 0,