| /* |
| * Copyright (C) 2010 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. |
| */ |
| |
| #define LOG_TAG "DefContainer-JNI" |
| |
| #include <JNIHelp.h> |
| |
| #include <diskusage/dirsize.h> |
| #include <utils/Log.h> |
| |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <string.h> |
| |
| namespace android { |
| |
| static jlong native_measureDirectory(JNIEnv* env, jobject /* clazz */, jstring directory) { |
| jlong ret = 0L; |
| |
| const char* path = env->GetStringUTFChars(directory, NULL); |
| if (path == NULL) { |
| return ret; |
| } |
| |
| int dirfd = open(path, O_DIRECTORY, O_RDONLY); |
| if (dirfd < 0) { |
| ALOGI("error opening: %s: %s", path, strerror(errno)); |
| } else { |
| ret = calculate_dir_size(dirfd); |
| close(dirfd); |
| } |
| |
| env->ReleaseStringUTFChars(directory, path); |
| |
| return ret; |
| } |
| |
| static const JNINativeMethod g_methods[] = { |
| { "native_measureDirectory", "(Ljava/lang/String;)J", (void*)native_measureDirectory }, |
| }; |
| |
| int register_com_android_defcontainer(JNIEnv *env) { |
| if (jniRegisterNativeMethods( |
| env, "com/android/defcontainer/MeasurementUtils", g_methods, NELEM(g_methods)) < 0) { |
| return JNI_ERR; |
| } |
| |
| return JNI_VERSION_1_6; |
| } |
| |
| } // namespace android |
| |
| int JNI_OnLoad(JavaVM *jvm, void* /* reserved */) { |
| JNIEnv *env; |
| |
| if (jvm->GetEnv((void**)&env, JNI_VERSION_1_6)) { |
| return JNI_ERR; |
| } |
| |
| return android::register_com_android_defcontainer(env); |
| } |