| /* |
| * 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/BackupHelpers.h> |
| |
| namespace android |
| { |
| |
| static jfieldID s_descriptorField = 0; |
| |
| static int |
| performBackup_native(JNIEnv* env, jobject clazz, jobject oldState, int data, |
| jobject newState, jobjectArray files, jobjectArray keys) |
| { |
| 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); |
| BackupDataWriter* dataStream = (BackupDataWriter*)data; |
| |
| 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); |
| } |
| |
| const int keyCount = env->GetArrayLength(keys); |
| char const** keysUTF = (char const**)malloc(sizeof(char*)*keyCount); |
| for (int i=0; i<keyCount; i++) { |
| keysUTF[i] = env->GetStringUTFChars((jstring)env->GetObjectArrayElement(keys, i), NULL); |
| } |
| |
| err = back_up_files(oldStateFD, dataStream, newStateFD, filesUTF, keysUTF, fileCount); |
| |
| for (int i=0; i<fileCount; i++) { |
| env->ReleaseStringUTFChars((jstring)env->GetObjectArrayElement(files, i), filesUTF[i]); |
| } |
| free(filesUTF); |
| |
| for (int i=0; i<keyCount; i++) { |
| env->ReleaseStringUTFChars((jstring)env->GetObjectArrayElement(keys, i), keysUTF[i]); |
| } |
| free(keysUTF); |
| |
| return err; |
| } |
| |
| static const JNINativeMethod g_methods[] = { |
| { "performBackup_native", |
| "(Ljava/io/FileDescriptor;ILjava/io/FileDescriptor;[Ljava/lang/String;[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)); |
| } |
| |
| } |