diff --git a/fastboot/fastboot.cpp b/fastboot/fastboot.cpp
index 3b524ac..332b355 100644
--- a/fastboot/fastboot.cpp
+++ b/fastboot/fastboot.cpp
@@ -494,8 +494,7 @@
     return bdata;
 }
 
-static void* unzip_file(ZipArchiveHandle zip, const char* entry_name, int64_t* sz)
-{
+static void* unzip_file(ZipArchiveHandle zip, const char* entry_name, int64_t* sz) {
     ZipString zip_entry_name(entry_name);
     ZipEntry zip_entry;
     if (FindEntry(zip, zip_entry_name, &zip_entry) != 0) {
@@ -505,6 +504,7 @@
 
     *sz = zip_entry.uncompressed_length;
 
+    fprintf(stderr, "extracting %s (%" PRId64 " MB)...\n", entry_name, *sz / 1024 / 1024);
     uint8_t* data = reinterpret_cast<uint8_t*>(malloc(zip_entry.uncompressed_length));
     if (data == nullptr) {
         fprintf(stderr, "failed to allocate %" PRId64 " bytes for '%s'\n", *sz, entry_name);
@@ -553,22 +553,39 @@
     return "";
 }
 
+static int make_temporary_fd() {
+    // TODO: reimplement to avoid leaking a FILE*.
+    return fileno(tmpfile());
+}
+
 #else
 
+static std::string make_temporary_template() {
+    const char* tmpdir = getenv("TMPDIR");
+    if (tmpdir == nullptr) tmpdir = P_tmpdir;
+    return std::string(tmpdir) + "/fastboot_userdata_XXXXXX";
+}
+
 static std::string make_temporary_directory() {
-    const char *tmpdir = getenv("TMPDIR");
-    if (tmpdir == nullptr) {
-        tmpdir = P_tmpdir;
-    }
-    std::string result = std::string(tmpdir) + "/fastboot_userdata_XXXXXX";
-    if (mkdtemp(&result[0]) == NULL) {
-        fprintf(stderr, "Unable to create temporary directory: %s\n",
-            strerror(errno));
+    std::string result(make_temporary_template());
+    if (mkdtemp(&result[0]) == nullptr) {
+        fprintf(stderr, "Unable to create temporary directory: %s\n", strerror(errno));
         return "";
     }
     return result;
 }
 
+static int make_temporary_fd() {
+    std::string path_template(make_temporary_template());
+    int fd = mkstemp(&path_template[0]);
+    if (fd == -1) {
+        fprintf(stderr, "Unable to create temporary file: %s\n", strerror(errno));
+        return -1;
+    }
+    unlink(path_template.c_str());
+    return fd;
+}
+
 #endif
 
 static std::string create_fbemarker_tmpdir() {
@@ -603,8 +620,8 @@
 }
 
 static int unzip_to_file(ZipArchiveHandle zip, char* entry_name) {
-    FILE* fp = tmpfile();
-    if (fp == nullptr) {
+    unique_fd fd(make_temporary_fd());
+    if (fd == -1) {
         fprintf(stderr, "failed to create temporary file for '%s': %s\n",
                 entry_name, strerror(errno));
         return -1;
@@ -614,21 +631,20 @@
     ZipEntry zip_entry;
     if (FindEntry(zip, zip_entry_name, &zip_entry) != 0) {
         fprintf(stderr, "archive does not contain '%s'\n", entry_name);
-        fclose(fp);
         return -1;
     }
 
-    int fd = fileno(fp);
+    fprintf(stderr, "extracting %s (%" PRIu32 " MB)...\n", entry_name,
+            zip_entry.uncompressed_length / 1024 / 1024);
     int error = ExtractEntryToFile(zip, &zip_entry, fd);
     if (error != 0) {
         fprintf(stderr, "failed to extract '%s': %s\n", entry_name, ErrorCodeString(error));
-        fclose(fp);
         return -1;
     }
 
     lseek(fd, 0, SEEK_SET);
     // TODO: We're leaking 'fp' here.
-    return fd;
+    return fd.release();
 }
 
 static char *strip(char *s)
@@ -1151,7 +1167,7 @@
             }
             flash_buf(partition.c_str(), &buf);
             /* not closing the fd here since the sparse code keeps the fd around
-             * but hasn't mmaped data yet. The tmpfile will get cleaned up when the
+             * but hasn't mmaped data yet. The temporary file will get cleaned up when the
              * program exits.
              */
         };
@@ -1412,7 +1428,8 @@
         return;
     }
 
-    fd = fileno(tmpfile());
+    fd = make_temporary_fd();
+    if (fd == -1) return;
 
     unsigned eraseBlkSize, logicalBlkSize;
     eraseBlkSize = fb_get_flash_block_size(transport, "erase-block-size");
diff --git a/init/reboot.cpp b/init/reboot.cpp
index 470b875..838406d 100644
--- a/init/reboot.cpp
+++ b/init/reboot.cpp
@@ -423,7 +423,6 @@
 bool HandlePowerctlMessage(const std::string& command) {
     unsigned int cmd = 0;
     std::vector<std::string> cmd_params = android::base::Split(command, ",");
-    std::string reason_string = cmd_params[0];
     std::string reboot_target = "";
     bool run_fsck = false;
     bool command_invalid = false;
@@ -436,7 +435,6 @@
             // The shutdown reason is PowerManager.SHUTDOWN_USER_REQUESTED.
             // Run fsck once the file system is remounted in read-only mode.
             run_fsck = true;
-            reason_string = cmd_params[1];
         }
     } else if (cmd_params[0] == "reboot") {
         cmd = ANDROID_RB_RESTART2;
@@ -467,6 +465,6 @@
         return false;
     }
 
-    DoReboot(cmd, reason_string, reboot_target, run_fsck);
+    DoReboot(cmd, command, reboot_target, run_fsck);
     return true;
 }
diff --git a/libbinderwrapper/Android.bp b/libbinderwrapper/Android.bp
new file mode 100644
index 0000000..6fac0d8
--- /dev/null
+++ b/libbinderwrapper/Android.bp
@@ -0,0 +1,61 @@
+//
+// Copyright (C) 2015 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.
+//
+
+cc_defaults {
+    name: "libbinderwrapper_defaults",
+
+    cflags: [
+        "-Wall",
+        "-Werror",
+        "-Wno-unused-parameter",
+
+        // for libchrome
+        "-Wno-sign-promo",
+    ],
+    export_include_dirs: ["include"],
+    shared_libs: [
+        "libbinder",
+        "libchrome",
+        "libutils",
+    ],
+}
+
+// libbinderwrapper shared library
+// ========================================================
+cc_library_shared {
+    name: "libbinderwrapper",
+    defaults: ["libbinderwrapper_defaults"],
+
+    srcs: [
+        "binder_wrapper.cc",
+        "real_binder_wrapper.cc",
+    ],
+}
+
+// libbinderwrapper_test_support static library
+// ========================================================
+cc_library_static {
+    name: "libbinderwrapper_test_support",
+    defaults: ["libbinderwrapper_defaults"],
+
+    static_libs: ["libgtest"],
+    shared_libs: ["libbinderwrapper"],
+
+    srcs: [
+        "binder_test_base.cc",
+        "stub_binder_wrapper.cc",
+    ],
+}
diff --git a/libbinderwrapper/Android.mk b/libbinderwrapper/Android.mk
deleted file mode 100644
index c768373..0000000
--- a/libbinderwrapper/Android.mk
+++ /dev/null
@@ -1,62 +0,0 @@
-#
-# Copyright (C) 2015 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.
-#
-
-LOCAL_PATH := $(call my-dir)
-
-binderwrapperCommonCFlags := -Wall -Werror -Wno-unused-parameter
-binderwrapperCommonCFlags += -Wno-sign-promo  # for libchrome
-binderwrapperCommonExportCIncludeDirs := $(LOCAL_PATH)/include
-binderwrapperCommonCIncludes := $(LOCAL_PATH)/include
-binderwrapperCommonSharedLibraries := \
-  libbinder \
-  libchrome \
-  libutils \
-
-# libbinderwrapper shared library
-# ========================================================
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := libbinderwrapper
-LOCAL_CPP_EXTENSION := .cc
-LOCAL_CFLAGS := $(binderwrapperCommonCFlags)
-LOCAL_EXPORT_C_INCLUDE_DIRS := $(binderwrapperCommonExportCIncludeDirs)
-LOCAL_C_INCLUDES := $(binderwrapperCommonCIncludes)
-LOCAL_SHARED_LIBRARIES := $(binderwrapperCommonSharedLibraries)
-LOCAL_SRC_FILES := \
-  binder_wrapper.cc \
-  real_binder_wrapper.cc \
-
-include $(BUILD_SHARED_LIBRARY)
-
-# libbinderwrapper_test_support static library
-# ========================================================
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := libbinderwrapper_test_support
-LOCAL_CPP_EXTENSION := .cc
-LOCAL_CFLAGS := $(binderwrapperCommonCFlags)
-LOCAL_EXPORT_C_INCLUDE_DIRS := $(binderwrapperCommonExportCIncludeDirs)
-LOCAL_C_INCLUDES := $(binderwrapperCommonCIncludes)
-LOCAL_STATIC_LIBRARIES := libgtest
-LOCAL_SHARED_LIBRARIES := \
-  $(binderwrapperCommonSharedLibraries) \
-  libbinderwrapper \
-
-LOCAL_SRC_FILES := \
-  binder_test_base.cc \
-  stub_binder_wrapper.cc \
-
-include $(BUILD_STATIC_LIBRARY)
diff --git a/trusty/Android.bp b/trusty/Android.bp
new file mode 100644
index 0000000..1b2e2c7
--- /dev/null
+++ b/trusty/Android.bp
@@ -0,0 +1,3 @@
+subdirs = [
+    "libtrusty",
+]
diff --git a/trusty/libtrusty/Android.bp b/trusty/libtrusty/Android.bp
new file mode 100644
index 0000000..f316da2
--- /dev/null
+++ b/trusty/libtrusty/Android.bp
@@ -0,0 +1,26 @@
+// Copyright (C) 2015 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.
+
+subdirs = [
+    "tipc-test",
+]
+
+cc_library {
+    name: "libtrusty",
+
+    srcs: ["trusty.c"],
+    export_include_dirs: ["include"],
+
+    shared_libs: ["liblog"],
+}
diff --git a/trusty/libtrusty/Android.mk b/trusty/libtrusty/Android.mk
deleted file mode 100644
index 45fc079..0000000
--- a/trusty/libtrusty/Android.mk
+++ /dev/null
@@ -1,36 +0,0 @@
-# Copyright (C) 2015 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.
-
-LOCAL_PATH := $(call my-dir)
-
-# == libtrusty Static library ==
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := libtrusty
-LOCAL_MODULE_TAGS := optional
-LOCAL_SRC_FILES := trusty.c
-LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include
-
-include $(BUILD_STATIC_LIBRARY)
-
-# ==  libtrusty shared library ==
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := libtrusty
-LOCAL_MODULE_TAGS := optional
-LOCAL_SRC_FILES := trusty.c
-LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include
-LOCAL_SHARED_LIBRARIES := liblog
-
-include $(BUILD_SHARED_LIBRARY)
diff --git a/trusty/libtrusty/tipc-test/Android.bp b/trusty/libtrusty/tipc-test/Android.bp
new file mode 100644
index 0000000..cb00fe7
--- /dev/null
+++ b/trusty/libtrusty/tipc-test/Android.bp
@@ -0,0 +1,26 @@
+// Copyright (C) 2015 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.
+
+cc_test {
+    name: "tipc-test",
+    static_executable: true,
+
+    srcs: ["tipc_test.c"],
+    static_libs: [
+        "libc",
+        "libtrusty",
+        "liblog",
+    ],
+    gtest: false,
+}
diff --git a/trusty/libtrusty/tipc-test/Android.mk b/trusty/libtrusty/tipc-test/Android.mk
deleted file mode 100644
index 80030fe..0000000
--- a/trusty/libtrusty/tipc-test/Android.mk
+++ /dev/null
@@ -1,29 +0,0 @@
-# Copyright (C) 2015 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.
-
-LOCAL_PATH := $(call my-dir)
-
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := tipc-test
-LOCAL_FORCE_STATIC_EXECUTABLE := true
-LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLES)
-LOCAL_MODULE_TAGS := optional
-LOCAL_SRC_FILES := tipc_test.c
-LOCAL_STATIC_LIBRARIES := libc libtrusty liblog
-LOCAL_MULTILIB := both
-LOCAL_MODULE_STEM_32 := $(LOCAL_MODULE)32
-LOCAL_MODULE_STEM_64 := $(LOCAL_MODULE)64
-
-include $(BUILD_EXECUTABLE)