Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [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 "MtpServerJNI" |
| 18 | #include "utils/Log.h" |
| 19 | |
| 20 | #include <stdio.h> |
| 21 | #include <assert.h> |
| 22 | #include <limits.h> |
| 23 | #include <unistd.h> |
| 24 | #include <fcntl.h> |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 25 | #include <sys/ioctl.h> |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 26 | #include <utils/threads.h> |
| 27 | |
Mike Lockwood | 602bebd | 2010-09-02 09:58:48 -0400 | [diff] [blame] | 28 | #ifdef HAVE_ANDROID_OS |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 29 | #include <linux/usb/f_mtp.h> |
Mike Lockwood | 602bebd | 2010-09-02 09:58:48 -0400 | [diff] [blame] | 30 | #endif |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 31 | |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 32 | #include "jni.h" |
| 33 | #include "JNIHelp.h" |
| 34 | #include "android_runtime/AndroidRuntime.h" |
Mike Lockwood | dad6927 | 2010-07-02 15:15:07 -0400 | [diff] [blame] | 35 | #include "private/android_filesystem_config.h" |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 36 | |
| 37 | #include "MtpServer.h" |
| 38 | |
Mike Lockwood | 81ea83d | 2010-06-30 17:49:41 -0400 | [diff] [blame] | 39 | using namespace android; |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 40 | |
| 41 | // ---------------------------------------------------------------------------- |
| 42 | |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 43 | // in android_mtp_MtpDatabase.cpp |
Mike Lockwood | d21eac9 | 2010-07-03 00:44:05 -0400 | [diff] [blame] | 44 | extern MtpDatabase* getMtpDatabase(JNIEnv *env, jobject database); |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 45 | |
| 46 | // ---------------------------------------------------------------------------- |
| 47 | |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 48 | #ifdef HAVE_ANDROID_OS |
| 49 | |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 50 | static bool ExceptionCheck(void* env) |
| 51 | { |
| 52 | return ((JNIEnv *)env)->ExceptionCheck(); |
| 53 | } |
| 54 | |
| 55 | class MtpThread : public Thread { |
| 56 | private: |
Mike Lockwood | d21eac9 | 2010-07-03 00:44:05 -0400 | [diff] [blame] | 57 | MtpDatabase* mDatabase; |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 58 | MtpServer* mServer; |
Mike Lockwood | 23ee42f | 2010-08-03 15:17:55 -0400 | [diff] [blame] | 59 | String8 mStoragePath; |
Mike Lockwood | 7f36b19 | 2010-12-12 12:17:43 -0800 | [diff] [blame] | 60 | uint64_t mReserveSpace; |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 61 | Mutex mMutex; |
| 62 | bool mUsePtp; |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 63 | int mFd; |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 64 | |
| 65 | public: |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 66 | MtpThread(MtpDatabase* database, const char* storagePath, uint64_t reserveSpace) |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 67 | : mDatabase(database), |
Mike Lockwood | 23ee42f | 2010-08-03 15:17:55 -0400 | [diff] [blame] | 68 | mServer(NULL), |
| 69 | mStoragePath(storagePath), |
Mike Lockwood | 7f36b19 | 2010-12-12 12:17:43 -0800 | [diff] [blame] | 70 | mReserveSpace(reserveSpace), |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 71 | mFd(-1) |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 72 | { |
| 73 | } |
| 74 | |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 75 | void setPtpMode(bool usePtp) { |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 76 | mMutex.lock(); |
| 77 | mUsePtp = usePtp; |
| 78 | mMutex.unlock(); |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 79 | } |
| 80 | |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 81 | virtual bool threadLoop() { |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 82 | mMutex.lock(); |
| 83 | mFd = open("/dev/mtp_usb", O_RDWR); |
| 84 | if (mFd >= 0) { |
| 85 | ioctl(mFd, MTP_SET_INTERFACE_MODE, |
| 86 | (mUsePtp ? MTP_INTERFACE_MODE_PTP : MTP_INTERFACE_MODE_MTP)); |
Mike Lockwood | 897f894 | 2011-01-19 10:11:28 -0800 | [diff] [blame] | 87 | |
| 88 | mServer = new MtpServer(mFd, mDatabase, AID_MEDIA_RW, 0664, 0775); |
| 89 | mServer->addStorage(mStoragePath, mReserveSpace); |
| 90 | |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 91 | mMutex.unlock(); |
Mike Lockwood | a1c9180 | 2011-01-18 20:11:29 -0800 | [diff] [blame] | 92 | mServer->run(); |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 93 | mMutex.lock(); |
Mike Lockwood | a1c9180 | 2011-01-18 20:11:29 -0800 | [diff] [blame] | 94 | |
Mike Lockwood | 897f894 | 2011-01-19 10:11:28 -0800 | [diff] [blame] | 95 | close(mFd); |
| 96 | mFd = -1; |
| 97 | delete mServer; |
| 98 | mServer = NULL; |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 99 | } else { |
| 100 | LOGE("could not open MTP driver, errno: %d", errno); |
| 101 | } |
| 102 | mMutex.unlock(); |
| 103 | // delay a bit before retrying to avoid excessive spin |
| 104 | if (!exitPending()) { |
| 105 | sleep(1); |
Mike Lockwood | 897f894 | 2011-01-19 10:11:28 -0800 | [diff] [blame] | 106 | } |
Mike Lockwood | 2b2bff5 | 2010-08-18 12:32:26 -0400 | [diff] [blame] | 107 | |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 108 | return true; |
Mike Lockwood | a1c9180 | 2011-01-18 20:11:29 -0800 | [diff] [blame] | 109 | } |
| 110 | |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 111 | void sendObjectAdded(MtpObjectHandle handle) { |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 112 | mMutex.lock(); |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 113 | if (mServer) |
| 114 | mServer->sendObjectAdded(handle); |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 115 | mMutex.unlock(); |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 116 | } |
| 117 | |
| 118 | void sendObjectRemoved(MtpObjectHandle handle) { |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 119 | mMutex.lock(); |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 120 | if (mServer) |
| 121 | mServer->sendObjectRemoved(handle); |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 122 | mMutex.unlock(); |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 123 | } |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 124 | }; |
| 125 | |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 126 | // This smart pointer is necessary for preventing MtpThread from exiting too early |
| 127 | static sp<MtpThread> sThread; |
| 128 | |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 129 | #endif // HAVE_ANDROID_OS |
| 130 | |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 131 | static void |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 132 | android_mtp_MtpServer_setup(JNIEnv *env, jobject thiz, jobject javaDatabase, |
Mike Lockwood | 7f36b19 | 2010-12-12 12:17:43 -0800 | [diff] [blame] | 133 | jstring storagePath, jlong reserveSpace) |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 134 | { |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 135 | #ifdef HAVE_ANDROID_OS |
Mike Lockwood | d21eac9 | 2010-07-03 00:44:05 -0400 | [diff] [blame] | 136 | MtpDatabase* database = getMtpDatabase(env, javaDatabase); |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 137 | const char *storagePathStr = env->GetStringUTFChars(storagePath, NULL); |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 138 | |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 139 | // create the thread and assign it to the smart pointer |
| 140 | sThread = new MtpThread(database, storagePathStr, reserveSpace); |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 141 | |
| 142 | env->ReleaseStringUTFChars(storagePath, storagePathStr); |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 143 | #endif |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 144 | } |
| 145 | |
| 146 | static void |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 147 | android_mtp_MtpServer_start(JNIEnv *env, jobject thiz) |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 148 | { |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 149 | #ifdef HAVE_ANDROID_OS |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 150 | MtpThread *thread = sThread.get(); |
| 151 | if (thread) |
| 152 | thread->run("MtpThread"); |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 153 | #endif // HAVE_ANDROID_OS |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 154 | } |
| 155 | |
| 156 | static void |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 157 | android_mtp_MtpServer_stop(JNIEnv *env, jobject thiz) |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 158 | { |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 159 | #ifdef HAVE_ANDROID_OS |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 160 | MtpThread *thread = sThread.get(); |
| 161 | if (thread) { |
| 162 | thread->requestExitAndWait(); |
| 163 | sThread = NULL; |
| 164 | } |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 165 | #endif |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 166 | } |
| 167 | |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 168 | static void |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 169 | android_mtp_MtpServer_send_object_added(JNIEnv *env, jobject thiz, jint handle) |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 170 | { |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 171 | #ifdef HAVE_ANDROID_OS |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 172 | MtpThread *thread = sThread.get(); |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 173 | if (thread) |
| 174 | thread->sendObjectAdded(handle); |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 175 | #endif |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 176 | } |
| 177 | |
| 178 | static void |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 179 | android_mtp_MtpServer_send_object_removed(JNIEnv *env, jobject thiz, jint handle) |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 180 | { |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 181 | #ifdef HAVE_ANDROID_OS |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 182 | MtpThread *thread = sThread.get(); |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 183 | if (thread) |
| 184 | thread->sendObjectRemoved(handle); |
Mike Lockwood | ff164a7 | 2010-07-15 15:01:17 -0400 | [diff] [blame] | 185 | #endif |
Mike Lockwood | be125a5 | 2010-07-12 18:54:16 -0400 | [diff] [blame] | 186 | } |
| 187 | |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 188 | static void |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 189 | android_mtp_MtpServer_set_ptp_mode(JNIEnv *env, jobject thiz, jboolean usePtp) |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 190 | { |
| 191 | #ifdef HAVE_ANDROID_OS |
Mike Lockwood | 071b2b6 | 2011-01-25 09:29:27 -0800 | [diff] [blame] | 192 | MtpThread *thread = sThread.get(); |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 193 | if (thread) |
| 194 | thread->setPtpMode(usePtp); |
Mike Lockwood | a1c9180 | 2011-01-18 20:11:29 -0800 | [diff] [blame] | 195 | #endif |
Mike Lockwood | eabe8bf | 2010-08-31 14:35:23 -0400 | [diff] [blame] | 196 | } |
| 197 | |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 198 | // ---------------------------------------------------------------------------- |
| 199 | |
| 200 | static JNINativeMethod gMethods[] = { |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 201 | {"native_setup", "(Landroid/mtp/MtpDatabase;Ljava/lang/String;J)V", |
| 202 | (void *)android_mtp_MtpServer_setup}, |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 203 | {"native_start", "()V", (void *)android_mtp_MtpServer_start}, |
| 204 | {"native_stop", "()V", (void *)android_mtp_MtpServer_stop}, |
| 205 | {"native_send_object_added", "(I)V", (void *)android_mtp_MtpServer_send_object_added}, |
| 206 | {"native_send_object_removed", "(I)V", (void *)android_mtp_MtpServer_send_object_removed}, |
| 207 | {"native_set_ptp_mode", "(Z)V", (void *)android_mtp_MtpServer_set_ptp_mode}, |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 208 | }; |
| 209 | |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 210 | static const char* const kClassPathName = "android/mtp/MtpServer"; |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 211 | |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 212 | int register_android_mtp_MtpServer(JNIEnv *env) |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 213 | { |
| 214 | jclass clazz; |
| 215 | |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 216 | clazz = env->FindClass("android/mtp/MtpServer"); |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 217 | if (clazz == NULL) { |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 218 | LOGE("Can't find android/mtp/MtpServer"); |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 219 | return -1; |
| 220 | } |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 221 | |
| 222 | return AndroidRuntime::registerNativeMethods(env, |
Mike Lockwood | 0cd0136 | 2010-12-30 11:54:33 -0500 | [diff] [blame] | 223 | "android/mtp/MtpServer", gMethods, NELEM(gMethods)); |
Mike Lockwood | 98ef64e | 2010-06-29 16:42:13 -0400 | [diff] [blame] | 224 | } |