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/*
* Copyright (C) 2009 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 "FileBackupHelper_native"
#include <utils/Log.h>
#include "JNIHelp.h"
#include <android_runtime/AndroidRuntime.h>
#include <utils/backup_helpers.h>
namespace android
{
static jfieldID s_descriptorField = 0;
static int
performBackup_native(JNIEnv* env, jobject clazz, jstring basePath, jobject oldState, jobject data,
jobject newState, jobjectArray files)
{
int err;
// all parameters have already been checked against null
LOGD("oldState=%p newState=%p data=%p\n", oldState, newState, data);
int oldStateFD = oldState != NULL ? env->GetIntField(oldState, s_descriptorField) : -1;
int newStateFD = env->GetIntField(newState, s_descriptorField);
int dataFD = env->GetIntField(data, s_descriptorField);
char const* basePathUTF = env->GetStringUTFChars(basePath, NULL);
LOGD("basePathUTF=\"%s\"\n", basePathUTF);
const int fileCount = env->GetArrayLength(files);
char const** filesUTF = (char const**)malloc(sizeof(char*)*fileCount);
for (int i=0; i<fileCount; i++) {
filesUTF[i] = env->GetStringUTFChars((jstring)env->GetObjectArrayElement(files, i), NULL);
}
err = back_up_files(oldStateFD, dataFD, newStateFD, basePathUTF, filesUTF, fileCount);
for (int i=0; i<fileCount; i++) {
env->ReleaseStringUTFChars((jstring)env->GetObjectArrayElement(files, i), filesUTF[i]);
}
free(filesUTF);
env->ReleaseStringUTFChars(basePath, basePathUTF);
return err;
}
static const JNINativeMethod g_methods[] = {
{ "performBackup_native",
"(Ljava/lang/String;Ljava/io/FileDescriptor;Ljava/io/FileDescriptor;"
"Ljava/io/FileDescriptor;[Ljava/lang/String;)I",
(void*)performBackup_native },
};
int register_android_backup_FileBackupHelper(JNIEnv* env)
{
LOGD("register_android_backup_FileBackupHelper");
jclass clazz;
clazz = env->FindClass("java/io/FileDescriptor");
LOG_FATAL_IF(clazz == NULL, "Unable to find class java.io.FileDescriptor");
s_descriptorField = env->GetFieldID(clazz, "descriptor", "I");
LOG_FATAL_IF(s_descriptorField == NULL,
"Unable to find descriptor field in java.io.FileDescriptor");
return AndroidRuntime::registerNativeMethods(env, "android/backup/FileBackupHelper",
g_methods, NELEM(g_methods));
}
}
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