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-rw-r--r--update_verifier/Android.mk42
-rw-r--r--update_verifier/include/update_verifier/update_verifier.h24
-rw-r--r--update_verifier/update_verifier.cpp17
-rw-r--r--update_verifier/update_verifier_main.cpp23
4 files changed, 90 insertions, 16 deletions
diff --git a/update_verifier/Android.mk b/update_verifier/Android.mk
index 1acd5eca0..37d9bfed3 100644
--- a/update_verifier/Android.mk
+++ b/update_verifier/Android.mk
@@ -14,12 +14,43 @@
LOCAL_PATH := $(call my-dir)
+# libupdate_verifier (static library)
+# ===============================
include $(CLEAR_VARS)
-LOCAL_CLANG := true
-LOCAL_SRC_FILES := update_verifier.cpp
+LOCAL_SRC_FILES := \
+ update_verifier.cpp
+
+LOCAL_MODULE := libupdate_verifier
+LOCAL_SHARED_LIBRARIES := \
+ libbase \
+ libcutils \
+ android.hardware.boot@1.0
+
+LOCAL_CFLAGS := -Wall -Werror
+
+LOCAL_EXPORT_C_INCLUDE_DIRS := \
+ $(LOCAL_PATH)/include
+
+LOCAL_C_INCLUDES := \
+ $(LOCAL_PATH)/include
+
+ifeq ($(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_SUPPORTS_VERITY),true)
+LOCAL_CFLAGS += -DPRODUCT_SUPPORTS_VERITY=1
+endif
+
+include $(BUILD_STATIC_LIBRARY)
+
+# update_verifier (executable)
+# ===============================
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := \
+ update_verifier_main.cpp
LOCAL_MODULE := update_verifier
+LOCAL_STATIC_LIBRARIES := \
+ libupdate_verifier
LOCAL_SHARED_LIBRARIES := \
libbase \
libcutils \
@@ -29,13 +60,8 @@ LOCAL_SHARED_LIBRARIES := \
libhidlbase \
android.hardware.boot@1.0
-LOCAL_CFLAGS := -Werror
-LOCAL_C_INCLUDES += $(LOCAL_PATH)/..
+LOCAL_CFLAGS := -Wall -Werror
LOCAL_INIT_RC := update_verifier.rc
-ifeq ($(PRODUCTS.$(INTERNAL_PRODUCT).PRODUCT_SUPPORTS_VERITY),true)
- LOCAL_CFLAGS += -DPRODUCT_SUPPORTS_VERITY=1
-endif
-
include $(BUILD_EXECUTABLE)
diff --git a/update_verifier/include/update_verifier/update_verifier.h b/update_verifier/include/update_verifier/update_verifier.h
new file mode 100644
index 000000000..16b394e98
--- /dev/null
+++ b/update_verifier/include/update_verifier/update_verifier.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+#pragma once
+
+#include <string>
+
+int update_verifier(int argc, char** argv);
+
+// Exposed for testing purpose.
+bool verify_image(const std::string& care_map_name);
diff --git a/update_verifier/update_verifier.cpp b/update_verifier/update_verifier.cpp
index 350020f13..1950cbd83 100644
--- a/update_verifier/update_verifier.cpp
+++ b/update_verifier/update_verifier.cpp
@@ -35,6 +35,8 @@
* verifier reaches the end after the verification.
*/
+#include "update_verifier/update_verifier.h"
+
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
@@ -59,12 +61,6 @@ using android::hardware::boot::V1_0::IBootControl;
using android::hardware::boot::V1_0::BoolResult;
using android::hardware::boot::V1_0::CommandResult;
-constexpr auto CARE_MAP_FILE = "/data/ota_package/care_map.txt";
-constexpr auto DM_PATH_PREFIX = "/sys/block/";
-constexpr auto DM_PATH_SUFFIX = "/dm/name";
-constexpr auto DEV_PATH = "/dev/block/";
-constexpr int BLOCKSIZE = 4096;
-
// Find directories in format of "/sys/block/dm-X".
static int dm_name_filter(const dirent* de) {
if (android::base::StartsWith(de->d_name, "dm-")) {
@@ -82,6 +78,7 @@ static bool read_blocks(const std::string& partition, const std::string& range_s
// (or "vendor"), then dm-X is a dm-wrapped system/vendor partition.
// Afterwards, update_verifier will read every block on the care_map_file of
// "/dev/block/dm-X" to ensure the partition's integrity.
+ static constexpr auto DM_PATH_PREFIX = "/sys/block/";
dirent** namelist;
int n = scandir(DM_PATH_PREFIX, &namelist, dm_name_filter, alphasort);
if (n == -1) {
@@ -93,6 +90,8 @@ static bool read_blocks(const std::string& partition, const std::string& range_s
return false;
}
+ static constexpr auto DM_PATH_SUFFIX = "/dm/name";
+ static constexpr auto DEV_PATH = "/dev/block/";
std::string dm_block_device;
while (n--) {
std::string path = DM_PATH_PREFIX + std::string(namelist[n]->d_name) + DM_PATH_SUFFIX;
@@ -143,6 +142,7 @@ static bool read_blocks(const std::string& partition, const std::string& range_s
return false;
}
+ static constexpr int BLOCKSIZE = 4096;
if (lseek64(fd.get(), static_cast<off64_t>(range_start) * BLOCKSIZE, SEEK_SET) == -1) {
PLOG(ERROR) << "lseek to " << range_start << " failed";
return false;
@@ -161,7 +161,7 @@ static bool read_blocks(const std::string& partition, const std::string& range_s
return true;
}
-static bool verify_image(const std::string& care_map_name) {
+bool verify_image(const std::string& care_map_name) {
android::base::unique_fd care_map_fd(TEMP_FAILURE_RETRY(open(care_map_name.c_str(), O_RDONLY)));
// If the device is flashed before the current boot, it may not have care_map.txt
// in /data/ota_package. To allow the device to continue booting in this situation,
@@ -205,7 +205,7 @@ static int reboot_device() {
while (true) pause();
}
-int main(int argc, char** argv) {
+int update_verifier(int argc, char** argv) {
for (int i = 1; i < argc; i++) {
LOG(INFO) << "Started with arg " << i << ": " << argv[i];
}
@@ -238,6 +238,7 @@ int main(int argc, char** argv) {
return reboot_device();
}
+ static constexpr auto CARE_MAP_FILE = "/data/ota_package/care_map.txt";
if (!verify_image(CARE_MAP_FILE)) {
LOG(ERROR) << "Failed to verify all blocks in care map file.";
return reboot_device();
diff --git a/update_verifier/update_verifier_main.cpp b/update_verifier/update_verifier_main.cpp
new file mode 100644
index 000000000..46e8bbb59
--- /dev/null
+++ b/update_verifier/update_verifier_main.cpp
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+// See the comments in update_verifier.cpp.
+
+#include "update_verifier/update_verifier.h"
+
+int main(int argc, char** argv) {
+ return update_verifier(argc, argv);
+}