Shared libs are supported in recovery mode

am: 011ee12b1d

Change-Id: I867dbafecf11215b82d952c532774cdf12c6e782

CleanSpec.mk

@@ -77,3 +77,4 @@ $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/etc/vndksp.libraries.txt)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/etc/ld.config.txt)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/etc/llndk.libraries.txt)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/etc/vndksp.libraries.txt)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/recovery/root/)

adb/Android.bp

@@ -302,8 +302,6 @@ cc_binary {
     name: "adbd",
     defaults: ["adb_defaults"],
 
-    // adbd must be static, as it is copied into the recovery image.
-    static_executable: true,
     recovery_available: true,
 
     srcs: [
@@ -344,7 +342,6 @@ cc_binary {
         "libselinux",
         "libsquashfs_utils",
         "libqemu_pipe",
-        "libdebuggerd_handler",
 
         "libbase",
         "libcutils",
@@ -371,6 +368,7 @@ cc_test {
         "liblog",
         "libusb",
         "libmdnssd",
+        "libselinux",
     ],
     test_suites: ["device-tests"],
 }

adb/daemon/main.cpp

@@ -38,7 +38,6 @@
 #include <scoped_minijail.h>
 
 #include <private/android_filesystem_config.h>
-#include "debuggerd/handler.h"
 #include "selinux/android.h"
 
 #include "adb.h"
@@ -274,7 +273,6 @@ int main(int argc, char** argv) {
 
     close_stdin();
 
-    debuggerd_init(nullptr);
     adb_trace_init(argv);
 
     D("Handling main()");

adb/daemon/shell_service.cpp

@@ -98,6 +98,7 @@
 #include <android-base/properties.h>
 #include <android-base/stringprintf.h>
 #include <private/android_logger.h>
+#include <selinux/android.h>
 
 #include "adb.h"
 #include "adb_io.h"
@@ -343,6 +344,24 @@ bool Subprocess::ForkAndExec(std::string* error) {
                 adb_write(oom_score_adj_fd, oom_score_adj_value, strlen(oom_score_adj_value)));
         }
 
+#ifdef __ANDROID_RECOVERY__
+        // Special routine for recovery. Switch to shell domain when adbd is
+        // is running with dropped privileged (i.e. not running as root) and
+        // is built for the recovery mode. This is required because recovery
+        // rootfs is not labeled and everything is labeled just as rootfs.
+        char* con = nullptr;
+        if (getcon(&con) == 0) {
+            if (!strcmp(con, "u:r:adbd:s0")) {
+                if (selinux_android_setcon("u:r:shell:s0") < 0) {
+                    LOG(FATAL) << "Could not set SELinux context for subprocess";
+                }
+            }
+            freecon(con);
+        } else {
+            LOG(FATAL) << "Failed to get SELinux context";
+        }
+#endif
+
         if (command_.empty()) {
             // Spawn a login shell if we don't have a command.
             execle(_PATH_BSHELL, "-" _PATH_BSHELL, nullptr, cenv.data());

debuggerd/Android.bp

@@ -47,6 +47,7 @@ cc_library_shared {
 cc_library_static {
     name: "libtombstoned_client_static",
     defaults: ["debuggerd_defaults"],
+    recovery_available: true,
     srcs: [
         "tombstoned/tombstoned_client.cpp",
         "util.cpp",
@@ -90,7 +91,6 @@ cc_library_static {
 cc_library_static {
     name: "libdebuggerd_handler",
     defaults: ["debuggerd_defaults"],
-    recovery_available: true,
     srcs: ["handler/debuggerd_fallback_nop.cpp"],
 
     whole_static_libs: [
@@ -104,6 +104,7 @@ cc_library_static {
 cc_library_static {
     name: "libdebuggerd_handler_fallback",
     defaults: ["debuggerd_defaults"],
+    recovery_available: true,
     srcs: [
         "handler/debuggerd_fallback.cpp",
     ],
@@ -120,6 +121,12 @@ cc_library_static {
         "liblzma",
         "libcutils",
     ],
+    target: {
+        recovery: {
+            cflags: ["-DNO_LIBDEXFILE_SUPPORT"],
+            exclude_static_libs: ["libdexfile"],
+        },
+    },
 
     export_include_dirs: ["include"],
 }

libutils/Android.bp

@@ -47,6 +47,7 @@ cc_library_headers {
 cc_defaults {
     name: "libutils_defaults",
     vendor_available: true,
+    recovery_available: true,
     vndk: {
         enabled: true,
         support_system_process: true,
@@ -90,6 +91,10 @@ cc_defaults {
             },
         },
 
+        recovery: {
+            exclude_shared_libs: ["libvndksupport"],
+        },
+
         host: {
             cflags: ["-DLIBUTILS_NATIVE=1"],
 

libutils/misc.cpp

@@ -23,7 +23,7 @@
 #include <utils/Log.h>
 #include <utils/Vector.h>
 
-#if defined(__ANDROID__)
+#if defined(__ANDROID__) && !defined(__ANDROID_RECOVERY__)
 #include <dlfcn.h>
 #include <vndksupport/linker.h>
 #endif
@@ -70,7 +70,7 @@ void add_sysprop_change_callback(sysprop_change_callback cb, int priority) {
 void add_sysprop_change_callback(sysprop_change_callback, int) {}
 #endif
 
-#if defined(__ANDROID__)
+#if defined(__ANDROID__) && !defined(__ANDROID_RECOVERY__)
 void (*get_report_sysprop_change_func())() {
     void (*func)() = nullptr;
     void* handle = android_load_sphal_library("libutils.so", RTLD_NOW);
@@ -85,7 +85,7 @@ void (*get_report_sysprop_change_func())() {
 void report_sysprop_change() {
     do_report_sysprop_change();
 
-#if defined(__ANDROID__)
+#if defined(__ANDROID__) && !defined(__ANDROID_RECOVERY__)
     // libutils.so is double loaded; from the default namespace and from the
     // 'sphal' namespace. Redirect the sysprop change event to the other instance
     // of libutils.so loaded in the 'sphal' namespace so that listeners attached

libziparchive/Android.bp

@@ -58,6 +58,7 @@ cc_library {
     name: "libziparchive",
     host_supported: true,
     vendor_available: true,
+    recovery_available: true,
     vndk: {
         enabled: true,
     },

rootdir/Android.mk

@@ -308,6 +308,16 @@ endif  # ifeq ($(_enforce_vndk_lite_at_runtime),false)
 _enforce_vndk_at_runtime :=
 _enforce_vndk_lite_at_runtime :=
 
+#######################################
+# ld.config.txt for recovery
+include $(CLEAR_VARS)
+LOCAL_MODULE := ld.config.recovery.txt
+LOCAL_MODULE_CLASS := ETC
+LOCAL_SRC_FILES := etc/ld.config.recovery.txt
+LOCAL_MODULE_PATH := $(TARGET_RECOVERY_ROOT_OUT)/etc
+LOCAL_MODULE_STEM := ld.config.txt
+include $(BUILD_PREBUILT)
+
 #######################################
 # llndk.libraries.txt
 include $(CLEAR_VARS)

rootdir/etc/ld.config.recovery.txt

@@ -0,0 +1,9 @@
+# Copyright (C) 2018 The Android Open Source Project
+#
+# Bionic loader config file for recovery mode
+#
+
+dir.recovery = /system/bin
+
+[recovery]
+namespace.default.search.paths = /system/${LIB}

shell_and_utilities/Android.bp

@@ -12,10 +12,13 @@ phony {
         "mkshrc_vendor",
         "reboot",
         "sh",
+        "sh.recovery",
         "sh_vendor",
         "toolbox",
+        "toolbox.recovery",
         "toolbox_vendor",
         "toybox",
+        "toybox.recovery",
         "toybox_vendor",
     ],
 }

toolbox/Android.bp

@@ -46,6 +46,7 @@ cc_defaults {
 cc_binary {
     name: "toolbox",
     defaults: ["toolbox_binary_defaults"],
+    recovery_available: true,
 }
 
 cc_binary {