Merge "reupload: libsnapshot: set thread priority" into main
diff --git a/fs_mgr/fs_mgr_overlayfs_mount.cpp b/fs_mgr/fs_mgr_overlayfs_mount.cpp
index a1ec63b..bd0fcfd 100644
--- a/fs_mgr/fs_mgr_overlayfs_mount.cpp
+++ b/fs_mgr/fs_mgr_overlayfs_mount.cpp
@@ -412,6 +412,8 @@
     bool retval = true;
     bool move_dir_shared = true;
     bool parent_shared = true;
+    bool parent_have_parent = false;
+    bool parent_made_private = false;
     bool root_shared = true;
     bool root_made_private = false;
 
@@ -443,6 +445,10 @@
         if (entry.mount_point == "/") {
             root_shared = entry.shared_flag;
         }
+        // Ignore "/" as we don't overlay "/" directly.
+        if (entry.mount_point != "/") {
+            parent_have_parent |= android::base::StartsWith(mount_point, entry.mount_point + "/");
+        }
     }
 
     // Precondition is that kMoveMountTempDir is MS_PRIVATE, otherwise don't try to move any
@@ -453,11 +459,13 @@
 
     // Need to make the original mountpoint MS_PRIVATE, so that the overlayfs can be MS_MOVE.
     // This could happen if its parent mount is remounted later.
-    if (!fs_mgr_overlayfs_set_shared_mount(mount_point, false)) {
-        // If failed to set "/system" mount type, it might be due to "/system" not being a valid
-        // mountpoint after switch root. Retry with "/" in this case.
-        if (errno == EINVAL && mount_point == "/system") {
-            root_made_private = fs_mgr_overlayfs_set_shared_mount("/", false);
+    if (parent_have_parent) {
+        parent_made_private |= fs_mgr_overlayfs_set_shared_mount(mount_point, false);
+        if (!parent_made_private && errno == EINVAL && mount_point == "/system") {
+            // If failed to set "/system" mount type, it might be due to "/system" not being a valid
+            // mountpoint after switch root. Retry with "/" in this case.
+            parent_made_private |= fs_mgr_overlayfs_set_shared_mount("/", false);
+            root_made_private |= parent_made_private;
         }
     }
 
@@ -496,6 +504,15 @@
                 continue;
             }
         }
+        if (!parent_made_private) {
+            parent_made_private |= fs_mgr_overlayfs_set_shared_mount(mount_point, false);
+            if (!parent_made_private && errno == EINVAL && mount_point == "/system") {
+                // If failed to set "/system" mount type, it might be due to "/system" not being a
+                // valid mountpoint after switch root. Retry with "/" in this case.
+                parent_made_private |= fs_mgr_overlayfs_set_shared_mount("/", false);
+                root_made_private |= parent_made_private;
+            }
+        }
 
         if (new_entry.shared_flag) {
             new_entry.shared_flag = fs_mgr_overlayfs_set_shared_mount(new_entry.mount_point, false);
@@ -524,7 +541,7 @@
         rmdir(entry.dir.c_str());
     }
     // If the original (overridden) mount was MS_SHARED, then set the overlayfs mount to MS_SHARED.
-    if (parent_shared) {
+    if (parent_shared && parent_made_private) {
         fs_mgr_overlayfs_set_shared_mount(mount_point, true);
     }
     if (root_shared && root_made_private) {
diff --git a/init/Android.bp b/init/Android.bp
index 57e5a68..6526a93 100644
--- a/init/Android.bp
+++ b/init/Android.bp
@@ -162,7 +162,7 @@
         },
         release_write_appcompat_override_system_properties: {
             cflags: ["-DWRITE_APPCOMPAT_OVERRIDE_SYSTEM_PROPERTIES"],
-        }
+        },
     },
     static_libs: [
         "libavb",
@@ -663,3 +663,23 @@
     src: "extra_free_kbytes.sh",
     filename_from_src: true,
 }
+
+soong_config_module_type {
+    name: "board_use_recovery_as_boot_phony",
+    module_type: "phony",
+    config_namespace: "ANDROID",
+    bool_variables: ["BOARD_USES_RECOVERY_AS_BOOT"],
+    properties: ["required"],
+}
+
+board_use_recovery_as_boot_phony {
+    name: "init_vendor",
+    soong_config_variables: {
+        BOARD_USES_RECOVERY_AS_BOOT: {
+            required: [],
+            conditions_default: {
+                required: ["init_first_stage"],
+            },
+        },
+    },
+}
diff --git a/init/Android.mk b/init/Android.mk
deleted file mode 100644
index 4b85c15..0000000
--- a/init/Android.mk
+++ /dev/null
@@ -1,16 +0,0 @@
-# Copyright 2005 The Android Open Source Project
-
-LOCAL_PATH:= $(call my-dir)
-
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := init_vendor
-LOCAL_LICENSE_KINDS := SPDX-license-identifier-Apache-2.0
-LOCAL_LICENSE_CONDITIONS := notice
-LOCAL_NOTICE_FILE := $(LOCAL_PATH)/NOTICE
-ifneq ($(BOARD_USES_RECOVERY_AS_BOOT),true)
-LOCAL_REQUIRED_MODULES := \
-   init_first_stage \
-
-endif  # BOARD_USES_RECOVERY_AS_BOOT
-include $(BUILD_PHONY_PACKAGE)
diff --git a/init/apex_init_util.cpp b/init/apex_init_util.cpp
index 6d17f36..e5a7fbc 100644
--- a/init/apex_init_util.cpp
+++ b/init/apex_init_util.cpp
@@ -107,8 +107,9 @@
     }
     // APEXes can have versioned RC files. These should be filtered based on
     // SDK version.
-    auto filtered = FilterVersionedConfigs(
-            files, android::base::GetIntProperty("ro.build.version.sdk", INT_MAX));
+    int sdk = android::base::GetIntProperty("ro.build.version.sdk", INT_MAX);
+    if (sdk < 35) sdk = 35;  // aosp/main merges only into sdk=35+ (ie. __ANDROID_API_V__+)
+    auto filtered = FilterVersionedConfigs(files, sdk);
     if (filtered.empty()) {
         return {};
     }