Merge "vndk: do not use prebuilt ld.config.<ver>.txt"
diff --git a/adb/client/adb_install.cpp b/adb/client/adb_install.cpp
index 21e0874..d56a25f 100644
--- a/adb/client/adb_install.cpp
+++ b/adb/client/adb_install.cpp
@@ -35,7 +35,6 @@
 #include "client/file_sync_client.h"
 #include "commandline.h"
 #include "fastdeploy.h"
-#include "sysdeps.h"
 
 static constexpr int kFastDeployMinApi = 24;
 
@@ -161,17 +160,23 @@
 
     if (use_fastdeploy == true) {
         TemporaryFile metadataTmpFile;
-        TemporaryFile patchTmpFile;
+        std::string patchTmpFilePath;
+        {
+            TemporaryFile patchTmpFile;
+            patchTmpFile.DoNotRemove();
+            patchTmpFilePath = patchTmpFile.path;
+        }
 
         FILE* metadataFile = fopen(metadataTmpFile.path, "wb");
         extract_metadata(file, metadataFile);
         fclose(metadataFile);
 
-        create_patch(file, metadataTmpFile.path, patchTmpFile.path);
+        create_patch(file, metadataTmpFile.path, patchTmpFilePath.c_str());
         // pass all but 1st (command) and last (apk path) parameters through to pm for
         // session creation
         std::vector<const char*> pm_args{argv + 1, argv + argc - 1};
-        install_patch(file, patchTmpFile.path, pm_args.size(), pm_args.data());
+        install_patch(file, patchTmpFilePath.c_str(), pm_args.size(), pm_args.data());
+        adb_unlink(patchTmpFilePath.c_str());
         delete_device_patch_file(file);
         return 0;
     } else {
diff --git a/fs_mgr/fs_mgr_overlayfs.cpp b/fs_mgr/fs_mgr_overlayfs.cpp
index 3908683..2c4299a 100644
--- a/fs_mgr/fs_mgr_overlayfs.cpp
+++ b/fs_mgr/fs_mgr_overlayfs.cpp
@@ -626,8 +626,8 @@
 
 // Only a suggestion for _first_ try during mounting
 std::string fs_mgr_overlayfs_scratch_mount_type() {
-    if (!access(kMkF2fs.c_str(), X_OK)) return "f2fs";
-    if (!access(kMkExt4.c_str(), X_OK)) return "ext4";
+    if (!access(kMkF2fs.c_str(), X_OK) && fs_mgr_access("/sys/fs/f2fs")) return "f2fs";
+    if (!access(kMkExt4.c_str(), X_OK) && fs_mgr_access("/sys/fs/ext4")) return "ext4";
     return "auto";
 }
 
@@ -642,7 +642,11 @@
         // Create from within single super device;
         auto& dm = DeviceMapper::Instance();
         const auto partition_name = android::base::Basename(kScratchMountPoint);
-        if (!dm.GetDmDevicePathByName(partition_name, &path)) return "";
+        if (!dm.GetDmDevicePathByName(partition_name, &path)) {
+            // non-DAP A/B device?
+            if (fs_mgr_access(super_device)) return "";
+            path = kPhysicalDevice + "system" + (slot_number ? "_a" : "_b");
+        }
     }
     return scratch_device_cache = path;
 }
@@ -829,8 +833,9 @@
                                                    true /* readonly */)) {
                     auto has_overlayfs_dir = fs_mgr_access(kScratchMountPoint + kOverlayTopDir);
                     fs_mgr_overlayfs_umount_scratch();
-                    if (has_overlayfs_dir)
+                    if (has_overlayfs_dir) {
                         fs_mgr_overlayfs_mount_scratch(scratch_device, mount_type);
+                    }
                 }
             }
         }
@@ -882,10 +887,6 @@
     for (const auto& overlay_mount_point : kOverlayMountPoints) {
         if (backing && backing[0] && (overlay_mount_point != backing)) continue;
         if (overlay_mount_point == kScratchMountPoint) {
-            if (!fs_mgr_rw_access(fs_mgr_overlayfs_super_device(fs_mgr_overlayfs_slot_number())) ||
-                !fs_mgr_overlayfs_has_logical(fstab)) {
-                continue;
-            }
             if (!fs_mgr_overlayfs_setup_scratch(fstab, change)) continue;
         } else {
             if (std::find_if(fstab.begin(), fstab.end(), [&overlay_mount_point](const auto& entry) {
diff --git a/fs_mgr/tests/adb-remount-test.sh b/fs_mgr/tests/adb-remount-test.sh
index 0765f04..42f3f29 100755
--- a/fs_mgr/tests/adb-remount-test.sh
+++ b/fs_mgr/tests/adb-remount-test.sh
@@ -309,7 +309,7 @@
     -e "^\(overlay\|tmpfs\|none\|sysfs\|proc\|selinuxfs\|debugfs\) " \
     -e "^\(bpf\|cg2_bpf\|pstore\|tracefs\|adb\|mtp\|ptp\|devpts\) " \
     -e "^\(/data/media\|/dev/block/loop[0-9]*\) " \
-    -e " /\(cache\|mnt/scratch\|mnt/vendor/persist\|metadata\) "
+    -e " /\(cache\|mnt/scratch\|mnt/vendor/persist\|persist\|metadata\) "
 }
 
 if [ X"-s" = X"${1}" -a -n "${2}" ]; then
@@ -403,9 +403,15 @@
      echo "${D}" | grep -v /dev/root`
 fi
 D=`echo "${D}" | cut -s -d' ' -f1 | sort -u`
+no_dedupe=true
+for d in ${D}; do
+  adb_sh tune2fs -l $d 2>&1 |
+    grep "Filesystem features:.*shared_blocks" >/dev/null &&
+  no_dedupe=false
+done
 D=`adb_sh df -k ${D} </dev/null`
 echo "${D}"
-if [ X"${D}" = X"${D##* 100[%] }" ]; then
+if [ X"${D}" = X"${D##* 100[%] }" ] && ${no_dedupe} ; then
   overlayfs_needed=false
 elif ! ${overlayfs_supported}; then
   die "need overlayfs, but do not have it"
@@ -597,6 +603,7 @@
 echo "${GREEN}[ RUN      ]${NORMAL} flash vendor, confirm its content disappears" >&2
 
 H=`adb_sh echo '${HOSTNAME}' </dev/null 2>/dev/null`
+is_userspace_fastboot=false
 if [ -z "${ANDROID_PRODUCT_OUT}" ]; then
   echo "${ORANGE}[  WARNING ]${NORMAL} build tree not setup, skipping"
 elif [ ! -s "${ANDROID_PRODUCT_OUT}/vendor.img" ]; then
@@ -609,6 +616,8 @@
     fastboot flash vendor ||
     ( fastboot reboot && false) ||
     die "fastboot flash vendor"
+  fastboot_getvar is-userspace yes &&
+    is_userspace_fastboot=true
   if [ -n "${scratch_paritition}" ]; then
     fastboot_getvar partition-type:${scratch_partition} raw ||
       ( fastboot reboot && false) ||
@@ -654,7 +663,12 @@
       echo "${D}" | grep "^overlay .* /system\$" >/dev/null ||
       die  "overlay /system takeover after flash vendor"
     echo "${D}" | grep "^overlay .* /vendor\$" >/dev/null &&
-      die  "overlay supposed to be minus /vendor takeover after flash vendor"
+      if ${is_userspace_fastboot}; then
+        die  "overlay supposed to be minus /vendor takeover after flash vendor"
+      else
+        echo "${ORANGE}[  WARNING ]${NORMAL} user fastboot missing, ignoring a failure"
+        ( die  "overlay supposed to be minus /vendor takeover after flash vendor" )
+      fi
   fi
   B="`adb_cat /system/hello`" ||
     die "re-read /system/hello after flash vendor"
@@ -662,8 +676,17 @@
   adb_root ||
     die "adb root"
   B="`adb_cat /vendor/hello`" &&
-    die "re-read /vendor/hello after flash vendor"
-  check_eq "cat: /vendor/hello: No such file or directory" "${B}" vendor after flash vendor
+    if ${is_userspace_fastboot} || ! ${overlayfs_needed}; then
+      die "re-read /vendor/hello after flash vendor"
+    else
+      echo "${ORANGE}[  WARNING ]${NORMAL} user fastboot missing, ignoring a failure"
+      ( die "re-read /vendor/hello after flash vendor" )
+    fi
+  if ${is_userspace_fastboot} || ! ${overlayfs_needed}; then
+    check_eq "cat: /vendor/hello: No such file or directory" "${B}" vendor after flash vendor
+  else
+    ( check_eq "cat: /vendor/hello: No such file or directory" "${B}" vendor after flash vendor )
+  fi
 fi
 
 echo "${GREEN}[ RUN      ]${NORMAL} remove test content (cleanup)" >&2
diff --git a/libunwindstack/tests/UnwindTest.cpp b/libunwindstack/tests/UnwindTest.cpp
index a91bd95..c747eab 100644
--- a/libunwindstack/tests/UnwindTest.cpp
+++ b/libunwindstack/tests/UnwindTest.cpp
@@ -47,6 +47,7 @@
 enum TestTypeEnum : uint8_t {
   TEST_TYPE_LOCAL_UNWINDER = 0,
   TEST_TYPE_LOCAL_UNWINDER_FROM_PID,
+  TEST_TYPE_LOCAL_WAIT_FOR_FINISH,
   TEST_TYPE_REMOTE,
   TEST_TYPE_REMOTE_WITH_INVALID_CALL,
 };
@@ -79,7 +80,10 @@
 
 extern "C" void SignalInnerFunction() {
   g_signal_ready_for_remote = true;
-  while (!g_finish.load()) {
+  // Avoid any function calls because not every instruction will be
+  // unwindable.
+  // This method of looping is only used when testing a remote unwind.
+  while (true) {
   }
 }
 
@@ -134,6 +138,11 @@
 // off. If this doesn't happen, then all of the calls will be optimized
 // away.
 extern "C" void InnerFunction(TestTypeEnum test_type) {
+  if (test_type == TEST_TYPE_LOCAL_WAIT_FOR_FINISH) {
+    while (!g_finish.load()) {
+    }
+    return;
+  }
   if (test_type == TEST_TYPE_REMOTE || test_type == TEST_TYPE_REMOTE_WITH_INVALID_CALL) {
     g_ready_for_remote = true;
     g_ready = true;
@@ -141,7 +150,10 @@
       void (*crash_func)() = nullptr;
       crash_func();
     }
-    while (!g_finish.load()) {
+    // Avoid any function calls because not every instruction will be
+    // unwindable.
+    // This method of looping is only used when testing a remote unwind.
+    while (true) {
     }
     return;
   }
@@ -271,7 +283,7 @@
   std::atomic_int tid(0);
   std::thread thread([&]() {
     tid = syscall(__NR_gettid);
-    OuterFunction(TEST_TYPE_REMOTE);
+    OuterFunction(TEST_TYPE_LOCAL_WAIT_FOR_FINISH);
   });
 
   struct sigaction act, oldact;
diff --git a/rootdir/etc/ld.config.txt b/rootdir/etc/ld.config.txt
index eb29c8b..1d4b1e2 100644
--- a/rootdir/etc/ld.config.txt
+++ b/rootdir/etc/ld.config.txt
@@ -109,7 +109,11 @@
 
 # Keep in sync with ld.config.txt in the com.android.runtime APEX.
 namespace.default.links = runtime
+# Visible because some libraries are dlopen'ed, e.g. libopenjdk is dlopen'ed by
+# libart.
+namespace.default.visible = true
 namespace.default.link.runtime.shared_libs  = libart.so:libartd.so
+namespace.default.link.runtime.shared_libs += libdexfile_external.so
 namespace.default.link.runtime.shared_libs += libnativebridge.so
 namespace.default.link.runtime.shared_libs += libnativehelper.so
 namespace.default.link.runtime.shared_libs += libnativeloader.so
@@ -311,7 +315,7 @@
 # (LL-NDK only) access.
 ###############################################################################
 [vendor]
-additional.namespaces = system,vndk
+additional.namespaces = runtime,system,vndk
 
 ###############################################################################
 # "default" namespace
@@ -348,6 +352,20 @@
 namespace.default.link.vndk.shared_libs += %VNDK_CORE_LIBRARIES%
 
 ###############################################################################
+# "runtime" APEX namespace
+#
+# This namespace exposes externally accessible libraries from the Runtime APEX.
+###############################################################################
+namespace.runtime.isolated = true
+
+# Keep in sync with ld.config.txt in the com.android.runtime APEX.
+namespace.runtime.search.paths = /apex/com.android.runtime/${LIB}
+namespace.runtime.links = system
+# TODO(b/119867084): Restrict to Bionic dlopen dependencies and PALette library
+# when it exists.
+namespace.runtime.link.system.allow_all_shared_libs = true
+
+###############################################################################
 # "vndk" namespace
 #
 # This namespace is where VNDK and VNDK-SP libraries are loaded for
@@ -404,6 +422,9 @@
 namespace.system.asan.search.paths += /data/asan/product_services/${LIB}
 namespace.system.asan.search.paths +=           /%PRODUCT_SERVICES%/${LIB}
 
+namespace.system.links = runtime
+namespace.system.link.runtime.shared_libs = libdexfile_external.so
+
 ###############################################################################
 # Namespace config for binaries under /postinstall.
 # Only default namespace is defined and default has no directories
diff --git a/rootdir/etc/ld.config.vndk_lite.txt b/rootdir/etc/ld.config.vndk_lite.txt
index b368805..d54156b 100644
--- a/rootdir/etc/ld.config.vndk_lite.txt
+++ b/rootdir/etc/ld.config.vndk_lite.txt
@@ -55,9 +55,14 @@
 namespace.default.asan.search.paths += /data/asan/product_services/${LIB}
 namespace.default.asan.search.paths +=           /%PRODUCT_SERVICES%/${LIB}
 
-# Keep in sync with ld.config.txt in the com.android.runtime APEX.
+# Keep in sync with the platform namespace in the com.android.runtime APEX
+# ld.config.txt.
 namespace.default.links = runtime
+# Visible because some libraries are dlopen'ed, e.g. libopenjdk is dlopen'ed by
+# libart.
+namespace.default.visible = true
 namespace.default.link.runtime.shared_libs  = libart.so:libartd.so
+namespace.default.link.runtime.shared_libs += libdexfile_external.so
 namespace.default.link.runtime.shared_libs += libnativehelper.so
 namespace.default.link.runtime.shared_libs += libnativeloader.so
 
@@ -68,7 +73,8 @@
 ###############################################################################
 namespace.runtime.isolated = true
 
-# Keep in sync with ld.config.txt in the com.android.runtime APEX.
+# Keep in sync with the default namespace in the com.android.runtime APEX
+# ld.config.txt.
 namespace.runtime.search.paths = /apex/com.android.runtime/${LIB}
 namespace.runtime.links = default
 # TODO(b/119867084): Restrict to Bionic dlopen dependencies and PALette library
@@ -252,6 +258,8 @@
 # (LL-NDK only) access.
 ###############################################################################
 [vendor]
+additional.namespaces = runtime
+
 namespace.default.isolated = false
 
 namespace.default.search.paths  = /odm/${LIB}
@@ -291,6 +299,23 @@
 namespace.default.asan.search.paths += /data/asan/product_services/${LIB}
 namespace.default.asan.search.paths +=           /%PRODUCT_SERVICES%/${LIB}
 
+namespace.default.links = runtime
+namespace.default.link.runtime.shared_libs = libdexfile_external.so
+
+###############################################################################
+# "runtime" APEX namespace
+#
+# This namespace exposes externally accessible libraries from the Runtime APEX.
+###############################################################################
+namespace.runtime.isolated = true
+
+# Keep in sync with ld.config.txt in the com.android.runtime APEX.
+namespace.runtime.search.paths = /apex/com.android.runtime/${LIB}
+namespace.runtime.links = default
+# TODO(b/119867084): Restrict to Bionic dlopen dependencies and PALette library
+# when it exists.
+namespace.runtime.link.default.allow_all_shared_libs = true
+
 ###############################################################################
 # Namespace config for binaries under /postinstall.
 # Only default namespace is defined and default has no directories
diff --git a/rootdir/init.zygote32.rc b/rootdir/init.zygote32.rc
index 2e95687..e8c5d8e 100644
--- a/rootdir/init.zygote32.rc
+++ b/rootdir/init.zygote32.rc
@@ -4,6 +4,7 @@
     user root
     group root readproc reserved_disk
     socket zygote stream 660 root system
+    socket blastula_pool stream 660 root system
     updatable
     onrestart write /sys/android_power/request_state wake
     onrestart write /sys/power/state on
diff --git a/rootdir/init.zygote32_64.rc b/rootdir/init.zygote32_64.rc
index 1cfc3d6..9c7e807 100644
--- a/rootdir/init.zygote32_64.rc
+++ b/rootdir/init.zygote32_64.rc
@@ -4,6 +4,7 @@
     user root
     group root readproc reserved_disk
     socket zygote stream 660 root system
+    socket blastula_pool stream 660 root system
     updatable
     onrestart write /sys/android_power/request_state wake
     onrestart write /sys/power/state on
@@ -20,6 +21,7 @@
     user root
     group root readproc reserved_disk
     socket zygote_secondary stream 660 root system
+    socket blastula_pool_secondary stream 660 root system
     updatable
     onrestart restart zygote
     writepid /dev/cpuset/foreground/tasks
diff --git a/rootdir/init.zygote64.rc b/rootdir/init.zygote64.rc
index 8ab012d..9908c99 100644
--- a/rootdir/init.zygote64.rc
+++ b/rootdir/init.zygote64.rc
@@ -4,6 +4,7 @@
     user root
     group root readproc reserved_disk
     socket zygote stream 660 root system
+    socket blastula_pool stream 660 root system
     updatable
     onrestart write /sys/android_power/request_state wake
     onrestart write /sys/power/state on
diff --git a/rootdir/init.zygote64_32.rc b/rootdir/init.zygote64_32.rc
index 5abf149..0b5edff 100644
--- a/rootdir/init.zygote64_32.rc
+++ b/rootdir/init.zygote64_32.rc
@@ -4,6 +4,7 @@
     user root
     group root readproc reserved_disk
     socket zygote stream 660 root system
+    socket blastula_pool stream 660 root system
     updatable
     onrestart write /sys/android_power/request_state wake
     onrestart write /sys/power/state on
@@ -20,6 +21,7 @@
     user root
     group root readproc reserved_disk
     socket zygote_secondary stream 660 root system
+    socket blastula_pool_secondary stream 660 root system
     updatable
     onrestart restart zygote
     writepid /dev/cpuset/foreground/tasks