android_backup_FileBackupHelperBase.cpp revision b1a7ffef3a0007b6991b8338460f6aac8cbb11e8
1b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato/* 2b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * Copyright (C) 2009 The Android Open Source Project 3b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * 4b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * Licensed under the Apache License, Version 2.0 (the "License"); 5b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * you may not use this file except in compliance with the License. 6b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * You may obtain a copy of the License at 7b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * 8b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * http://www.apache.org/licenses/LICENSE-2.0 9b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * 10b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * Unless required by applicable law or agreed to in writing, software 11b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * distributed under the License is distributed on an "AS IS" BASIS, 12b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * See the License for the specific language governing permissions and 14b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato * limitations under the License. 15b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato */ 16b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 17b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato#include "JNIHelp.h" 18b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato#include <android_runtime/AndroidRuntime.h> 19b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 20b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato#include <utils/backup_helpers.h> 21b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 22b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onoratonamespace android 23b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato{ 24b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 25b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onoratostatic jfieldID s_descriptorField; 26b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 27b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onoratostatic int 28b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe OnoratoperformBackup_native(JNIEnv* env, jstring basePath, 29b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato jobject oldSnapshot, jobject newSnapshot, 30b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato jobject data, jobjectArray files) 31b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato{ 32b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato int err; 33b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 34b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato // all parameters have already been checked against null 35b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 36b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato int oldSnapshotFD = env->GetIntField(oldSnapshot, s_descriptorField); 37b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato int newSnapshotFD = env->GetIntField(newSnapshot, s_descriptorField); 38b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato int dataFD = env->GetIntField(data, s_descriptorField); 39b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 40b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato char const* basePathUTF = env->GetStringUTFChars(basePath, NULL); 41b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato const int fileCount = env->GetArrayLength(files); 42b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato char const** filesUTF = (char const**)malloc(sizeof(char*)*fileCount); 43b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato for (int i=0; i<fileCount; i++) { 44b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato filesUTF[i] = env->GetStringUTFChars((jstring)env->GetObjectArrayElement(files, i), NULL); 45b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato } 46b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 47b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato err = back_up_files(oldSnapshotFD, newSnapshotFD, dataFD, basePathUTF, filesUTF, fileCount); 48b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 49b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato for (int i=0; i<fileCount; i++) { 50b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato env->ReleaseStringUTFChars((jstring)env->GetObjectArrayElement(files, i), filesUTF[i]); 51b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato } 52b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato free(filesUTF); 53b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato env->ReleaseStringUTFChars(basePath, basePathUTF); 54b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 55b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato return err; 56b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato} 57b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 58b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onoratostatic const JNINativeMethod g_methods[] = { 59b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato { "performBackup_native", 60b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato "(Ljava/lang/String;Ljava/io/FileDescriptor;Ljava/io/FileDescriptor;" 61b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato "Ljava/io/FileDescriptor;[Ljava/lang/String;)I", 62b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato (void*)performBackup_native }, 63b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato}; 64b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 65b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onoratoint register_android_backup_FileBackupHelper(JNIEnv* env) 66b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato{ 67b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato jclass clazz; 68b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 69b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato clazz = env->FindClass("java/io/FileDescriptor"); 70b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato LOG_FATAL_IF(clazz == NULL, "Unable to find class java.io.FileDescriptor"); 71b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato s_descriptorField = env->GetFieldID(clazz, "descriptor", "I"); 72b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato LOG_FATAL_IF(s_descriptorField == NULL, 73b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato "Unable to find descriptor field in java.io.FileDescriptor"); 74b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 75b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato return AndroidRuntime::registerNativeMethods(env, "android/backup/FileBackupHelper", 76b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato g_methods, NELEM(g_methods)); 77b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato} 78b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato 79b1a7ffef3a0007b6991b8338460f6aac8cbb11e8Joe Onorato} 80