Zim | 3e45d9b | 2019-08-19 21:14:14 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2019 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 specic language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | // Need to use LOGE_EX. |
Zim | 7e0d314 | 2019-10-17 21:06:12 +0100 | [diff] [blame] | 18 | #define LOG_TAG "FuseDaemonJNI" |
Zim | 3e45d9b | 2019-08-19 21:14:14 +0100 | [diff] [blame] | 19 | |
Zim | 763428f | 2021-09-17 11:46:48 +0100 | [diff] [blame] | 20 | #include <nativehelper/scoped_local_ref.h> |
shafik | 8b57cd5 | 2019-09-06 10:51:29 +0100 | [diff] [blame] | 21 | #include <nativehelper/scoped_utf_chars.h> |
Zim | 3e45d9b | 2019-08-19 21:14:14 +0100 | [diff] [blame] | 22 | |
| 23 | #include <string> |
| 24 | |
shafik | 8b57cd5 | 2019-09-06 10:51:29 +0100 | [diff] [blame] | 25 | #include "FuseDaemon.h" |
Narayan Kamath | de3fe17 | 2020-02-18 12:14:51 +0000 | [diff] [blame] | 26 | #include "MediaProviderWrapper.h" |
shafik | 8b57cd5 | 2019-09-06 10:51:29 +0100 | [diff] [blame] | 27 | #include "android-base/logging.h" |
Martijn Coenen | 083eb69 | 2020-04-24 09:39:58 +0200 | [diff] [blame] | 28 | #include "android-base/unique_fd.h" |
Zim | 3e45d9b | 2019-08-19 21:14:14 +0100 | [diff] [blame] | 29 | |
| 30 | namespace mediaprovider { |
| 31 | namespace { |
| 32 | |
Zim | 08041a8 | 2022-01-13 15:43:38 +0000 | [diff] [blame] | 33 | constexpr const char* FUSE_DAEMON_CLASS_NAME = "com/android/providers/media/fuse/FuseDaemon"; |
| 34 | constexpr const char* FD_ACCESS_RESULT_CLASS_NAME = "com/android/providers/media/FdAccessResult"; |
Zim | 3e45d9b | 2019-08-19 21:14:14 +0100 | [diff] [blame] | 35 | static jclass gFuseDaemonClass; |
Zim | 08041a8 | 2022-01-13 15:43:38 +0000 | [diff] [blame] | 36 | static jclass gFdAccessResultClass; |
| 37 | static jmethodID gFdAccessResultCtor; |
Zim | 3e45d9b | 2019-08-19 21:14:14 +0100 | [diff] [blame] | 38 | |
Zim | 763428f | 2021-09-17 11:46:48 +0100 | [diff] [blame] | 39 | static std::vector<std::string> get_supported_transcoding_relative_paths( |
| 40 | JNIEnv* env, jobjectArray java_supported_transcoding_relative_paths) { |
| 41 | ScopedLocalRef<jobjectArray> j_transcoding_relative_paths( |
| 42 | env, java_supported_transcoding_relative_paths); |
| 43 | std::vector<std::string> transcoding_relative_paths; |
| 44 | |
| 45 | const int transcoding_relative_paths_count = |
| 46 | env->GetArrayLength(j_transcoding_relative_paths.get()); |
| 47 | for (int i = 0; i < transcoding_relative_paths_count; i++) { |
| 48 | ScopedLocalRef<jstring> j_ref_relative_path( |
| 49 | env, (jstring)env->GetObjectArrayElement(j_transcoding_relative_paths.get(), i)); |
| 50 | ScopedUtfChars j_utf_relative_path(env, j_ref_relative_path.get()); |
| 51 | const char* relative_path = j_utf_relative_path.c_str(); |
| 52 | |
| 53 | if (relative_path) { |
| 54 | transcoding_relative_paths.push_back(relative_path); |
| 55 | } else { |
| 56 | LOG(ERROR) << "Error reading supported transcoding relative path at index: " << i; |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | return transcoding_relative_paths; |
| 61 | } |
| 62 | |
Zim | edbe69e | 2019-12-13 18:49:36 +0000 | [diff] [blame] | 63 | jlong com_android_providers_media_FuseDaemon_new(JNIEnv* env, jobject self, |
| 64 | jobject media_provider) { |
Narayan Kamath | 88203dc | 2019-08-30 17:19:38 +0100 | [diff] [blame] | 65 | LOG(DEBUG) << "Creating the FUSE daemon..."; |
Zim | edbe69e | 2019-12-13 18:49:36 +0000 | [diff] [blame] | 66 | return reinterpret_cast<jlong>(new fuse::FuseDaemon(env, media_provider)); |
Zim | 3e45d9b | 2019-08-19 21:14:14 +0100 | [diff] [blame] | 67 | } |
| 68 | |
Zim | 763428f | 2021-09-17 11:46:48 +0100 | [diff] [blame] | 69 | void com_android_providers_media_FuseDaemon_start( |
| 70 | JNIEnv* env, jobject self, jlong java_daemon, jint fd, jstring java_path, |
| 71 | jobjectArray java_supported_transcoding_relative_paths) { |
Narayan Kamath | 88203dc | 2019-08-30 17:19:38 +0100 | [diff] [blame] | 72 | LOG(DEBUG) << "Starting the FUSE daemon..."; |
Zim | 3e45d9b | 2019-08-19 21:14:14 +0100 | [diff] [blame] | 73 | fuse::FuseDaemon* const daemon = reinterpret_cast<fuse::FuseDaemon*>(java_daemon); |
| 74 | |
Martijn Coenen | 083eb69 | 2020-04-24 09:39:58 +0200 | [diff] [blame] | 75 | android::base::unique_fd ufd(fd); |
| 76 | |
Zim | 7c8712d | 2019-10-03 21:01:26 +0100 | [diff] [blame] | 77 | ScopedUtfChars utf_chars_path(env, java_path); |
| 78 | if (!utf_chars_path.c_str()) { |
Zim | 3e45d9b | 2019-08-19 21:14:14 +0100 | [diff] [blame] | 79 | return; |
| 80 | } |
Zim | 3e45d9b | 2019-08-19 21:14:14 +0100 | [diff] [blame] | 81 | |
Zim | 763428f | 2021-09-17 11:46:48 +0100 | [diff] [blame] | 82 | const std::vector<std::string>& transcoding_relative_paths = |
| 83 | get_supported_transcoding_relative_paths(env, |
| 84 | java_supported_transcoding_relative_paths); |
| 85 | |
| 86 | daemon->Start(std::move(ufd), utf_chars_path.c_str(), transcoding_relative_paths); |
Zim | 3e45d9b | 2019-08-19 21:14:14 +0100 | [diff] [blame] | 87 | } |
| 88 | |
Zim | d0435b2 | 2020-03-05 13:52:51 +0000 | [diff] [blame] | 89 | bool com_android_providers_media_FuseDaemon_is_started(JNIEnv* env, jobject self, |
| 90 | jlong java_daemon) { |
| 91 | LOG(DEBUG) << "Checking if FUSE daemon started..."; |
| 92 | const fuse::FuseDaemon* daemon = reinterpret_cast<fuse::FuseDaemon*>(java_daemon); |
| 93 | return daemon->IsStarted(); |
| 94 | } |
| 95 | |
shafik | 8b57cd5 | 2019-09-06 10:51:29 +0100 | [diff] [blame] | 96 | void com_android_providers_media_FuseDaemon_delete(JNIEnv* env, jobject self, jlong java_daemon) { |
Narayan Kamath | 88203dc | 2019-08-30 17:19:38 +0100 | [diff] [blame] | 97 | LOG(DEBUG) << "Destroying the FUSE daemon..."; |
Zim | 3e45d9b | 2019-08-19 21:14:14 +0100 | [diff] [blame] | 98 | fuse::FuseDaemon* const daemon = reinterpret_cast<fuse::FuseDaemon*>(java_daemon); |
| 99 | delete daemon; |
| 100 | } |
| 101 | |
Zim | edbe69e | 2019-12-13 18:49:36 +0000 | [diff] [blame] | 102 | jboolean com_android_providers_media_FuseDaemon_should_open_with_fuse(JNIEnv* env, jobject self, |
| 103 | jlong java_daemon, |
| 104 | jstring java_path, |
| 105 | jboolean for_read, jint fd) { |
| 106 | fuse::FuseDaemon* const daemon = reinterpret_cast<fuse::FuseDaemon*>(java_daemon); |
| 107 | if (daemon) { |
| 108 | ScopedUtfChars utf_chars_path(env, java_path); |
| 109 | if (!utf_chars_path.c_str()) { |
| 110 | // TODO(b/145741852): Throw exception |
| 111 | return JNI_FALSE; |
| 112 | } |
| 113 | |
| 114 | return daemon->ShouldOpenWithFuse(fd, for_read, utf_chars_path.c_str()); |
| 115 | } |
| 116 | // TODO(b/145741852): Throw exception |
| 117 | return JNI_FALSE; |
| 118 | } |
| 119 | |
Zim | a76c349 | 2020-02-19 01:23:26 +0000 | [diff] [blame] | 120 | void com_android_providers_media_FuseDaemon_invalidate_fuse_dentry_cache(JNIEnv* env, jobject self, |
| 121 | jlong java_daemon, |
| 122 | jstring java_path) { |
| 123 | fuse::FuseDaemon* const daemon = reinterpret_cast<fuse::FuseDaemon*>(java_daemon); |
| 124 | if (daemon) { |
| 125 | ScopedUtfChars utf_chars_path(env, java_path); |
| 126 | if (!utf_chars_path.c_str()) { |
| 127 | // TODO(b/145741152): Throw exception |
| 128 | return; |
| 129 | } |
| 130 | |
Colin Cross | 915ad6a | 2020-04-03 18:19:07 -0700 | [diff] [blame] | 131 | CHECK(pthread_getspecific(fuse::MediaProviderWrapper::gJniEnvKey) == nullptr); |
Zim | a76c349 | 2020-02-19 01:23:26 +0000 | [diff] [blame] | 132 | daemon->InvalidateFuseDentryCache(utf_chars_path.c_str()); |
| 133 | } |
| 134 | // TODO(b/145741152): Throw exception |
| 135 | } |
| 136 | |
Zim | 08041a8 | 2022-01-13 15:43:38 +0000 | [diff] [blame] | 137 | jobject com_android_providers_media_FuseDaemon_check_fd_access(JNIEnv* env, jobject self, |
| 138 | jlong java_daemon, jint fd, |
| 139 | jint uid) { |
Biswarup Pal | 93f4ec1 | 2021-02-15 13:39:36 +0000 | [diff] [blame] | 140 | fuse::FuseDaemon* const daemon = reinterpret_cast<fuse::FuseDaemon*>(java_daemon); |
Zim | 08041a8 | 2022-01-13 15:43:38 +0000 | [diff] [blame] | 141 | const std::unique_ptr<fuse::FdAccessResult> result = daemon->CheckFdAccess(fd, uid); |
| 142 | return env->NewObject(gFdAccessResultClass, gFdAccessResultCtor, |
| 143 | env->NewStringUTF(result->file_path.c_str()), result->should_redact); |
Biswarup Pal | 93f4ec1 | 2021-02-15 13:39:36 +0000 | [diff] [blame] | 144 | } |
| 145 | |
| 146 | void com_android_providers_media_FuseDaemon_initialize_device_id(JNIEnv* env, jobject self, |
| 147 | jlong java_daemon, |
| 148 | jstring java_path) { |
| 149 | fuse::FuseDaemon* const daemon = reinterpret_cast<fuse::FuseDaemon*>(java_daemon); |
| 150 | ScopedUtfChars utf_chars_path(env, java_path); |
| 151 | if (!utf_chars_path.c_str()) { |
| 152 | LOG(WARNING) << "Couldn't initialise FUSE device id"; |
| 153 | return; |
| 154 | } |
| 155 | daemon->InitializeDeviceId(utf_chars_path.c_str()); |
| 156 | } |
| 157 | |
Zim | c0e65bd | 2020-03-09 15:22:59 +0000 | [diff] [blame] | 158 | bool com_android_providers_media_FuseDaemon_is_fuse_thread(JNIEnv* env, jclass clazz) { |
Zim | c0e65bd | 2020-03-09 15:22:59 +0000 | [diff] [blame] | 159 | return pthread_getspecific(fuse::MediaProviderWrapper::gJniEnvKey) != nullptr; |
| 160 | } |
| 161 | |
Zim | 3e45d9b | 2019-08-19 21:14:14 +0100 | [diff] [blame] | 162 | const JNINativeMethod methods[] = { |
Zim | 7c8712d | 2019-10-03 21:01:26 +0100 | [diff] [blame] | 163 | {"native_new", "(Lcom/android/providers/media/MediaProvider;)J", |
| 164 | reinterpret_cast<void*>(com_android_providers_media_FuseDaemon_new)}, |
Zim | 763428f | 2021-09-17 11:46:48 +0100 | [diff] [blame] | 165 | {"native_start", "(JILjava/lang/String;[Ljava/lang/String;)V", |
Zim | 7c8712d | 2019-10-03 21:01:26 +0100 | [diff] [blame] | 166 | reinterpret_cast<void*>(com_android_providers_media_FuseDaemon_start)}, |
Zim | 7c8712d | 2019-10-03 21:01:26 +0100 | [diff] [blame] | 167 | {"native_delete", "(J)V", |
Zim | edbe69e | 2019-12-13 18:49:36 +0000 | [diff] [blame] | 168 | reinterpret_cast<void*>(com_android_providers_media_FuseDaemon_delete)}, |
| 169 | {"native_should_open_with_fuse", "(JLjava/lang/String;ZI)Z", |
Zim | a76c349 | 2020-02-19 01:23:26 +0000 | [diff] [blame] | 170 | reinterpret_cast<void*>(com_android_providers_media_FuseDaemon_should_open_with_fuse)}, |
Zim | c0e65bd | 2020-03-09 15:22:59 +0000 | [diff] [blame] | 171 | {"native_is_fuse_thread", "()Z", |
| 172 | reinterpret_cast<void*>(com_android_providers_media_FuseDaemon_is_fuse_thread)}, |
Zim | d0435b2 | 2020-03-05 13:52:51 +0000 | [diff] [blame] | 173 | {"native_is_started", "(J)Z", |
| 174 | reinterpret_cast<void*>(com_android_providers_media_FuseDaemon_is_started)}, |
Zim | a76c349 | 2020-02-19 01:23:26 +0000 | [diff] [blame] | 175 | {"native_invalidate_fuse_dentry_cache", "(JLjava/lang/String;)V", |
| 176 | reinterpret_cast<void*>( |
Biswarup Pal | 93f4ec1 | 2021-02-15 13:39:36 +0000 | [diff] [blame] | 177 | com_android_providers_media_FuseDaemon_invalidate_fuse_dentry_cache)}, |
Zim | 08041a8 | 2022-01-13 15:43:38 +0000 | [diff] [blame] | 178 | {"native_check_fd_access", "(JII)Lcom/android/providers/media/FdAccessResult;", |
| 179 | reinterpret_cast<void*>(com_android_providers_media_FuseDaemon_check_fd_access)}, |
Biswarup Pal | 93f4ec1 | 2021-02-15 13:39:36 +0000 | [diff] [blame] | 180 | {"native_initialize_device_id", "(JLjava/lang/String;)V", |
| 181 | reinterpret_cast<void*>(com_android_providers_media_FuseDaemon_initialize_device_id)}}; |
Zim | 3e45d9b | 2019-08-19 21:14:14 +0100 | [diff] [blame] | 182 | } // namespace |
| 183 | |
Narayan Kamath | de3fe17 | 2020-02-18 12:14:51 +0000 | [diff] [blame] | 184 | void register_android_providers_media_FuseDaemon(JavaVM* vm, JNIEnv* env) { |
Zim | 08041a8 | 2022-01-13 15:43:38 +0000 | [diff] [blame] | 185 | gFuseDaemonClass = |
| 186 | static_cast<jclass>(env->NewGlobalRef(env->FindClass(FUSE_DAEMON_CLASS_NAME))); |
| 187 | gFdAccessResultClass = |
| 188 | static_cast<jclass>(env->NewGlobalRef(env->FindClass(FD_ACCESS_RESULT_CLASS_NAME))); |
Narayan Kamath | 88203dc | 2019-08-30 17:19:38 +0100 | [diff] [blame] | 189 | |
| 190 | if (gFuseDaemonClass == nullptr) { |
Zim | 08041a8 | 2022-01-13 15:43:38 +0000 | [diff] [blame] | 191 | LOG(FATAL) << "Unable to find class : " << FUSE_DAEMON_CLASS_NAME; |
| 192 | } |
| 193 | |
| 194 | if (gFdAccessResultClass == nullptr) { |
| 195 | LOG(FATAL) << "Unable to find class : " << FD_ACCESS_RESULT_CLASS_NAME; |
Narayan Kamath | 88203dc | 2019-08-30 17:19:38 +0100 | [diff] [blame] | 196 | } |
| 197 | |
shafik | 8b57cd5 | 2019-09-06 10:51:29 +0100 | [diff] [blame] | 198 | if (env->RegisterNatives(gFuseDaemonClass, methods, sizeof(methods) / sizeof(methods[0])) < 0) { |
Narayan Kamath | 88203dc | 2019-08-30 17:19:38 +0100 | [diff] [blame] | 199 | LOG(FATAL) << "Unable to register native methods"; |
| 200 | } |
Narayan Kamath | de3fe17 | 2020-02-18 12:14:51 +0000 | [diff] [blame] | 201 | |
Zim | 08041a8 | 2022-01-13 15:43:38 +0000 | [diff] [blame] | 202 | gFdAccessResultCtor = env->GetMethodID(gFdAccessResultClass, "<init>", "(Ljava/lang/String;Z)V"); |
| 203 | if (gFdAccessResultCtor == nullptr) { |
| 204 | LOG(FATAL) << "Unable to find ctor for FdAccessResult"; |
| 205 | } |
| 206 | |
Narayan Kamath | de3fe17 | 2020-02-18 12:14:51 +0000 | [diff] [blame] | 207 | fuse::MediaProviderWrapper::OneTimeInit(vm); |
Zim | 3e45d9b | 2019-08-19 21:14:14 +0100 | [diff] [blame] | 208 | } |
| 209 | } // namespace mediaprovider |