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/*
* 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);
}
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