Kenny Root | aa183e2 | 2010-12-02 18:00:38 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #define LOG_TAG "DefContainer-JNI" |
| 18 | |
| 19 | #include <JNIHelp.h> |
| 20 | |
| 21 | #include <diskusage/dirsize.h> |
| 22 | #include <utils/Log.h> |
| 23 | |
| 24 | #include <sys/types.h> |
| 25 | #include <sys/stat.h> |
| 26 | #include <errno.h> |
| 27 | #include <fcntl.h> |
| 28 | #include <string.h> |
| 29 | |
| 30 | namespace android { |
| 31 | |
| 32 | static jlong native_measureDirectory(JNIEnv* env, jobject clazz, jstring directory) { |
| 33 | jlong ret = 0L; |
| 34 | |
| 35 | const char* path = env->GetStringUTFChars(directory, NULL); |
| 36 | if (path == NULL) { |
| 37 | return ret; |
| 38 | } |
| 39 | |
| 40 | int dirfd = open(path, O_DIRECTORY, O_RDONLY); |
| 41 | if (dirfd < 0) { |
Steve Block | 6215d3f | 2012-01-04 20:05:49 +0000 | [diff] [blame] | 42 | ALOGI("error opening: %s: %s", path, strerror(errno)); |
Kenny Root | aa183e2 | 2010-12-02 18:00:38 -0800 | [diff] [blame] | 43 | } else { |
| 44 | ret = calculate_dir_size(dirfd); |
| 45 | close(dirfd); |
| 46 | } |
| 47 | |
| 48 | env->ReleaseStringUTFChars(directory, path); |
| 49 | |
| 50 | return ret; |
| 51 | } |
| 52 | |
| 53 | static const JNINativeMethod g_methods[] = { |
| 54 | { "native_measureDirectory", "(Ljava/lang/String;)J", (void*)native_measureDirectory }, |
| 55 | }; |
| 56 | |
| 57 | int register_com_android_defcontainer(JNIEnv *env) { |
| 58 | if (jniRegisterNativeMethods( |
| 59 | env, "com/android/defcontainer/MeasurementUtils", g_methods, NELEM(g_methods)) < 0) { |
| 60 | return JNI_ERR; |
| 61 | } |
| 62 | |
| 63 | return JNI_VERSION_1_6; |
| 64 | } |
| 65 | |
| 66 | } // namespace android |
| 67 | |
| 68 | int JNI_OnLoad(JavaVM *jvm, void* reserved) { |
| 69 | JNIEnv *env; |
| 70 | |
| 71 | if (jvm->GetEnv((void**)&env, JNI_VERSION_1_6)) { |
| 72 | return JNI_ERR; |
| 73 | } |
| 74 | |
| 75 | return android::register_com_android_defcontainer(env); |
| 76 | } |