aa183e2c9a
System applications that don't have "media_rw" access need some way to measure the size of directories on the SD card and other internal media. Add this API to DefaultContainerService so they can simply bind to the service and make an RPC. Bug: 3203974 Change-Id: I4e1bcd7a1b702b156c011ecc04f6915022cb258a
77 lines
1.9 KiB
C++
77 lines
1.9 KiB
C++
/*
|
|
* 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) {
|
|
LOGI("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);
|
|
}
|