android_os_Parcel.cpp revision 0a7a913683cb52cc847d52e4217b6637646a3c49 
1/*
2 * Copyright (C) 2012 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 "Parcel"
18//#define LOG_NDEBUG 0
19
20#include "android_os_Parcel.h"
21#include "android_util_Binder.h"
22
23#include "JNIHelp.h"
24
25#include <fcntl.h>
26#include <stdio.h>
27#include <sys/stat.h>
28#include <sys/types.h>
29#include <unistd.h>
30
31#include <utils/Atomic.h>
32#include <binder/IInterface.h>
33#include <binder/IPCThreadState.h>
34#include <utils/Log.h>
35#include <utils/SystemClock.h>
36#include <utils/List.h>
37#include <utils/KeyedVector.h>
38#include <binder/Parcel.h>
39#include <binder/ProcessState.h>
40#include <binder/IServiceManager.h>
41#include <utils/threads.h>
42#include <utils/String8.h>
43
44#include <ScopedUtfChars.h>
45#include <ScopedLocalRef.h>
46
47#include <android_runtime/AndroidRuntime.h>
48
49#include "core_jni_helpers.h"
50
51//#undef ALOGV
52//#define ALOGV(...) fprintf(stderr, __VA_ARGS__)
53
54#define DEBUG_DEATH 0
55#if DEBUG_DEATH
56#define LOGDEATH ALOGD
57#else
58#define LOGDEATH ALOGV
59#endif
60
61namespace android {
62
63static struct parcel_offsets_t
64{
65    jclass clazz;
66    jfieldID mNativePtr;
67    jmethodID obtain;
68    jmethodID recycle;
69} gParcelOffsets;
70
71Parcel* parcelForJavaObject(JNIEnv* env, jobject obj)
72{
73    if (obj) {
74        Parcel* p = (Parcel*)env->GetLongField(obj, gParcelOffsets.mNativePtr);
75        if (p != NULL) {
76            return p;
77        }
78        jniThrowException(env, "java/lang/IllegalStateException", "Parcel has been finalized!");
79    }
80    return NULL;
81}
82
83jobject createJavaParcelObject(JNIEnv* env)
84{
85    return env->CallStaticObjectMethod(gParcelOffsets.clazz, gParcelOffsets.obtain);
86}
87
88void recycleJavaParcelObject(JNIEnv* env, jobject parcelObj)
89{
90    env->CallVoidMethod(parcelObj, gParcelOffsets.recycle);
91}
92
93static jint android_os_Parcel_dataSize(JNIEnv* env, jclass clazz, jlong nativePtr)
94{
95    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
96    return parcel ? parcel->dataSize() : 0;
97}
98
99static jint android_os_Parcel_dataAvail(JNIEnv* env, jclass clazz, jlong nativePtr)
100{
101    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
102    return parcel ? parcel->dataAvail() : 0;
103}
104
105static jint android_os_Parcel_dataPosition(JNIEnv* env, jclass clazz, jlong nativePtr)
106{
107    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
108    return parcel ? parcel->dataPosition() : 0;
109}
110
111static jint android_os_Parcel_dataCapacity(JNIEnv* env, jclass clazz, jlong nativePtr)
112{
113    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
114    return parcel ? parcel->dataCapacity() : 0;
115}
116
117static jlong android_os_Parcel_setDataSize(JNIEnv* env, jclass clazz, jlong nativePtr, jint size)
118{
119    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
120    if (parcel != NULL) {
121        const status_t err = parcel->setDataSize(size);
122        if (err != NO_ERROR) {
123            signalExceptionForError(env, clazz, err);
124        }
125        return parcel->getOpenAshmemSize();
126    }
127    return 0;
128}
129
130static void android_os_Parcel_setDataPosition(JNIEnv* env, jclass clazz, jlong nativePtr, jint pos)
131{
132    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
133    if (parcel != NULL) {
134        parcel->setDataPosition(pos);
135    }
136}
137
138static void android_os_Parcel_setDataCapacity(JNIEnv* env, jclass clazz, jlong nativePtr, jint size)
139{
140    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
141    if (parcel != NULL) {
142        const status_t err = parcel->setDataCapacity(size);
143        if (err != NO_ERROR) {
144            signalExceptionForError(env, clazz, err);
145        }
146    }
147}
148
149static jboolean android_os_Parcel_pushAllowFds(JNIEnv* env, jclass clazz, jlong nativePtr, jboolean allowFds)
150{
151    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
152    jboolean ret = JNI_TRUE;
153    if (parcel != NULL) {
154        ret = (jboolean)parcel->pushAllowFds(allowFds);
155    }
156    return ret;
157}
158
159static void android_os_Parcel_restoreAllowFds(JNIEnv* env, jclass clazz, jlong nativePtr, jboolean lastValue)
160{
161    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
162    if (parcel != NULL) {
163        parcel->restoreAllowFds((bool)lastValue);
164    }
165}
166
167static void android_os_Parcel_writeNative(JNIEnv* env, jclass clazz, jlong nativePtr, jobject data,
168                                          jint offset, jint length)
169{
170    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
171    if (parcel == NULL) {
172        return;
173    }
174
175    const status_t err = parcel->writeInt32(length);
176    if (err != NO_ERROR) {
177        signalExceptionForError(env, clazz, err);
178        return;
179    }
180
181    void* dest = parcel->writeInplace(length);
182    if (dest == NULL) {
183        signalExceptionForError(env, clazz, NO_MEMORY);
184        return;
185    }
186
187    jbyte* ar = (jbyte*)env->GetPrimitiveArrayCritical((jarray)data, 0);
188    if (ar) {
189        memcpy(dest, ar + offset, length);
190        env->ReleasePrimitiveArrayCritical((jarray)data, ar, 0);
191    }
192}
193
194static void android_os_Parcel_writeBlob(JNIEnv* env, jclass clazz, jlong nativePtr, jobject data,
195                                        jint offset, jint length) {
196    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
197    if (parcel == NULL) {
198        return;
199    }
200
201    if (data == NULL) {
202        const status_t err = parcel->writeInt32(-1);
203        if (err != NO_ERROR) {
204            signalExceptionForError(env, clazz, err);
205        }
206        return;
207    }
208
209    const status_t err = parcel->writeInt32(length);
210    if (err != NO_ERROR) {
211        signalExceptionForError(env, clazz, err);
212        return;
213    }
214
215    android::Parcel::WritableBlob blob;
216    android::status_t err2 = parcel->writeBlob(length, false, &blob);
217    if (err2 != NO_ERROR) {
218        signalExceptionForError(env, clazz, err2);
219        return;
220    }
221
222    jbyte* ar = (jbyte*)env->GetPrimitiveArrayCritical((jarray)data, 0);
223    if (ar == NULL) {
224        memset(blob.data(), 0, length);
225    } else {
226        memcpy(blob.data(), ar + offset, length);
227        env->ReleasePrimitiveArrayCritical((jarray)data, ar, 0);
228    }
229
230    blob.release();
231}
232
233static void android_os_Parcel_writeInt(JNIEnv* env, jclass clazz, jlong nativePtr, jint val) {
234    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
235    if (parcel != NULL) {
236        const status_t err = parcel->writeInt32(val);
237        if (err != NO_ERROR) {
238            signalExceptionForError(env, clazz, err);
239        }
240    }
241}
242
243static void android_os_Parcel_writeLong(JNIEnv* env, jclass clazz, jlong nativePtr, jlong val)
244{
245    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
246    if (parcel != NULL) {
247        const status_t err = parcel->writeInt64(val);
248        if (err != NO_ERROR) {
249            signalExceptionForError(env, clazz, err);
250        }
251    }
252}
253
254static void android_os_Parcel_writeFloat(JNIEnv* env, jclass clazz, jlong nativePtr, jfloat val)
255{
256    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
257    if (parcel != NULL) {
258        const status_t err = parcel->writeFloat(val);
259        if (err != NO_ERROR) {
260            signalExceptionForError(env, clazz, err);
261        }
262    }
263}
264
265static void android_os_Parcel_writeDouble(JNIEnv* env, jclass clazz, jlong nativePtr, jdouble val)
266{
267    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
268    if (parcel != NULL) {
269        const status_t err = parcel->writeDouble(val);
270        if (err != NO_ERROR) {
271            signalExceptionForError(env, clazz, err);
272        }
273    }
274}
275
276static void android_os_Parcel_writeString(JNIEnv* env, jclass clazz, jlong nativePtr, jstring val)
277{
278    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
279    if (parcel != NULL) {
280        status_t err = NO_MEMORY;
281        if (val) {
282            const jchar* str = env->GetStringCritical(val, 0);
283            if (str) {
284                err = parcel->writeString16(
285                    reinterpret_cast<const char16_t*>(str),
286                    env->GetStringLength(val));
287                env->ReleaseStringCritical(val, str);
288            }
289        } else {
290            err = parcel->writeString16(NULL, 0);
291        }
292        if (err != NO_ERROR) {
293            signalExceptionForError(env, clazz, err);
294        }
295    }
296}
297
298static void android_os_Parcel_writeStrongBinder(JNIEnv* env, jclass clazz, jlong nativePtr, jobject object)
299{
300    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
301    if (parcel != NULL) {
302        const status_t err = parcel->writeStrongBinder(ibinderForJavaObject(env, object));
303        if (err != NO_ERROR) {
304            signalExceptionForError(env, clazz, err);
305        }
306    }
307}
308
309static jlong android_os_Parcel_writeFileDescriptor(JNIEnv* env, jclass clazz, jlong nativePtr, jobject object)
310{
311    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
312    if (parcel != NULL) {
313        const status_t err =
314                parcel->writeDupFileDescriptor(jniGetFDFromFileDescriptor(env, object));
315        if (err != NO_ERROR) {
316            signalExceptionForError(env, clazz, err);
317        }
318        return parcel->getOpenAshmemSize();
319    }
320    return 0;
321}
322
323static jbyteArray android_os_Parcel_createByteArray(JNIEnv* env, jclass clazz, jlong nativePtr)
324{
325    jbyteArray ret = NULL;
326
327    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
328    if (parcel != NULL) {
329        int32_t len = parcel->readInt32();
330
331        // sanity check the stored length against the true data size
332        if (len >= 0 && len <= (int32_t)parcel->dataAvail()) {
333            ret = env->NewByteArray(len);
334
335            if (ret != NULL) {
336                jbyte* a2 = (jbyte*)env->GetPrimitiveArrayCritical(ret, 0);
337                if (a2) {
338                    const void* data = parcel->readInplace(len);
339                    memcpy(a2, data, len);
340                    env->ReleasePrimitiveArrayCritical(ret, a2, 0);
341                }
342            }
343        }
344    }
345
346    return ret;
347}
348
349static jbyteArray android_os_Parcel_readBlob(JNIEnv* env, jclass clazz, jlong nativePtr)
350{
351    jbyteArray ret = NULL;
352
353    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
354    if (parcel != NULL) {
355        int32_t len = parcel->readInt32();
356        if (len >= 0) {
357            android::Parcel::ReadableBlob blob;
358            android::status_t err = parcel->readBlob(len, &blob);
359            if (err != NO_ERROR) {
360                signalExceptionForError(env, clazz, err);
361                return NULL;
362            }
363
364            ret = env->NewByteArray(len);
365            if (ret != NULL) {
366                jbyte* a2 = (jbyte*)env->GetPrimitiveArrayCritical(ret, 0);
367                if (a2) {
368                    memcpy(a2, blob.data(), len);
369                    env->ReleasePrimitiveArrayCritical(ret, a2, 0);
370                }
371            }
372            blob.release();
373        }
374    }
375
376    return ret;
377}
378
379static jint android_os_Parcel_readInt(JNIEnv* env, jclass clazz, jlong nativePtr)
380{
381    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
382    if (parcel != NULL) {
383        return parcel->readInt32();
384    }
385    return 0;
386}
387
388static jlong android_os_Parcel_readLong(JNIEnv* env, jclass clazz, jlong nativePtr)
389{
390    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
391    if (parcel != NULL) {
392        return parcel->readInt64();
393    }
394    return 0;
395}
396
397static jfloat android_os_Parcel_readFloat(JNIEnv* env, jclass clazz, jlong nativePtr)
398{
399    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
400    if (parcel != NULL) {
401        return parcel->readFloat();
402    }
403    return 0;
404}
405
406static jdouble android_os_Parcel_readDouble(JNIEnv* env, jclass clazz, jlong nativePtr)
407{
408    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
409    if (parcel != NULL) {
410        return parcel->readDouble();
411    }
412    return 0;
413}
414
415static jstring android_os_Parcel_readString(JNIEnv* env, jclass clazz, jlong nativePtr)
416{
417    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
418    if (parcel != NULL) {
419        size_t len;
420        const char16_t* str = parcel->readString16Inplace(&len);
421        if (str) {
422            return env->NewString(reinterpret_cast<const jchar*>(str), len);
423        }
424        return NULL;
425    }
426    return NULL;
427}
428
429static jobject android_os_Parcel_readStrongBinder(JNIEnv* env, jclass clazz, jlong nativePtr)
430{
431    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
432    if (parcel != NULL) {
433        return javaObjectForIBinder(env, parcel->readStrongBinder());
434    }
435    return NULL;
436}
437
438static jobject android_os_Parcel_readFileDescriptor(JNIEnv* env, jclass clazz, jlong nativePtr)
439{
440    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
441    if (parcel != NULL) {
442        int fd = parcel->readFileDescriptor();
443        if (fd < 0) return NULL;
444        fd = dup(fd);
445        if (fd < 0) return NULL;
446        return jniCreateFileDescriptor(env, fd);
447    }
448    return NULL;
449}
450
451static jobject android_os_Parcel_openFileDescriptor(JNIEnv* env, jclass clazz,
452                                                    jstring name, jint mode)
453{
454    if (name == NULL) {
455        jniThrowNullPointerException(env, NULL);
456        return NULL;
457    }
458    ScopedUtfChars name8(env, name);
459    if (name8.c_str() == NULL) {
460        return NULL;
461    }
462
463    int flags=0;
464    switch (mode&0x30000000) {
465        case 0:
466        case 0x10000000:
467            flags = O_RDONLY;
468            break;
469        case 0x20000000:
470            flags = O_WRONLY;
471            break;
472        case 0x30000000:
473            flags = O_RDWR;
474            break;
475    }
476
477    if (mode&0x08000000) flags |= O_CREAT;
478    if (mode&0x04000000) flags |= O_TRUNC;
479    if (mode&0x02000000) flags |= O_APPEND;
480
481    int realMode = S_IRWXU|S_IRWXG;
482    if (mode&0x00000001) realMode |= S_IROTH;
483    if (mode&0x00000002) realMode |= S_IWOTH;
484
485    int fd = open(name8.c_str(), flags, realMode);
486    if (fd < 0) {
487        jniThrowException(env, "java/io/FileNotFoundException", strerror(errno));
488        return NULL;
489    }
490    jobject object = jniCreateFileDescriptor(env, fd);
491    if (object == NULL) {
492        close(fd);
493    }
494    return object;
495}
496
497static jobject android_os_Parcel_dupFileDescriptor(JNIEnv* env, jclass clazz, jobject orig)
498{
499    if (orig == NULL) {
500        jniThrowNullPointerException(env, NULL);
501        return NULL;
502    }
503    int origfd = jniGetFDFromFileDescriptor(env, orig);
504    if (origfd < 0) {
505        jniThrowException(env, "java/lang/IllegalArgumentException", "bad FileDescriptor");
506        return NULL;
507    }
508
509    int fd = dup(origfd);
510    if (fd < 0) {
511        jniThrowIOException(env, errno);
512        return NULL;
513    }
514    jobject object = jniCreateFileDescriptor(env, fd);
515    if (object == NULL) {
516        close(fd);
517    }
518    return object;
519}
520
521static void android_os_Parcel_closeFileDescriptor(JNIEnv* env, jclass clazz, jobject object)
522{
523    if (object == NULL) {
524        jniThrowNullPointerException(env, NULL);
525        return;
526    }
527    int fd = jniGetFDFromFileDescriptor(env, object);
528    if (fd >= 0) {
529        jniSetFileDescriptorOfFD(env, object, -1);
530        //ALOGI("Closing ParcelFileDescriptor %d\n", fd);
531        close(fd);
532    }
533}
534
535static void android_os_Parcel_clearFileDescriptor(JNIEnv* env, jclass clazz, jobject object)
536{
537    if (object == NULL) {
538        jniThrowNullPointerException(env, NULL);
539        return;
540    }
541    int fd = jniGetFDFromFileDescriptor(env, object);
542    if (fd >= 0) {
543        jniSetFileDescriptorOfFD(env, object, -1);
544    }
545}
546
547static jlong android_os_Parcel_create(JNIEnv* env, jclass clazz)
548{
549    Parcel* parcel = new Parcel();
550    return reinterpret_cast<jlong>(parcel);
551}
552
553static jlong android_os_Parcel_freeBuffer(JNIEnv* env, jclass clazz, jlong nativePtr)
554{
555    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
556    if (parcel != NULL) {
557        parcel->freeData();
558        return parcel->getOpenAshmemSize();
559    }
560    return 0;
561}
562
563static void android_os_Parcel_destroy(JNIEnv* env, jclass clazz, jlong nativePtr)
564{
565    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
566    delete parcel;
567}
568
569static jbyteArray android_os_Parcel_marshall(JNIEnv* env, jclass clazz, jlong nativePtr)
570{
571    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
572    if (parcel == NULL) {
573       return NULL;
574    }
575
576    // do not marshall if there are binder objects in the parcel
577    if (parcel->objectsCount())
578    {
579        jniThrowException(env, "java/lang/RuntimeException", "Tried to marshall a Parcel that contained Binder objects.");
580        return NULL;
581    }
582
583    jbyteArray ret = env->NewByteArray(parcel->dataSize());
584
585    if (ret != NULL)
586    {
587        jbyte* array = (jbyte*)env->GetPrimitiveArrayCritical(ret, 0);
588        if (array != NULL)
589        {
590            memcpy(array, parcel->data(), parcel->dataSize());
591            env->ReleasePrimitiveArrayCritical(ret, array, 0);
592        }
593    }
594
595    return ret;
596}
597
598static jlong android_os_Parcel_unmarshall(JNIEnv* env, jclass clazz, jlong nativePtr,
599                                          jbyteArray data, jint offset, jint length)
600{
601    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
602    if (parcel == NULL || length < 0) {
603       return 0;
604    }
605
606    jbyte* array = (jbyte*)env->GetPrimitiveArrayCritical(data, 0);
607    if (array)
608    {
609        parcel->setDataSize(length);
610        parcel->setDataPosition(0);
611
612        void* raw = parcel->writeInplace(length);
613        memcpy(raw, (array + offset), length);
614
615        env->ReleasePrimitiveArrayCritical(data, array, 0);
616    }
617    return parcel->getOpenAshmemSize();
618}
619
620static jlong android_os_Parcel_appendFrom(JNIEnv* env, jclass clazz, jlong thisNativePtr,
621                                          jlong otherNativePtr, jint offset, jint length)
622{
623    Parcel* thisParcel = reinterpret_cast<Parcel*>(thisNativePtr);
624    if (thisParcel == NULL) {
625       return 0;
626    }
627    Parcel* otherParcel = reinterpret_cast<Parcel*>(otherNativePtr);
628    if (otherParcel == NULL) {
629       return thisParcel->getOpenAshmemSize();
630    }
631
632    status_t err = thisParcel->appendFrom(otherParcel, offset, length);
633    if (err != NO_ERROR) {
634        signalExceptionForError(env, clazz, err);
635    }
636    return thisParcel->getOpenAshmemSize();
637}
638
639static jboolean android_os_Parcel_hasFileDescriptors(JNIEnv* env, jclass clazz, jlong nativePtr)
640{
641    jboolean ret = JNI_FALSE;
642    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
643    if (parcel != NULL) {
644        if (parcel->hasFileDescriptors()) {
645            ret = JNI_TRUE;
646        }
647    }
648    return ret;
649}
650
651static void android_os_Parcel_writeInterfaceToken(JNIEnv* env, jclass clazz, jlong nativePtr,
652                                                  jstring name)
653{
654    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
655    if (parcel != NULL) {
656        // In the current implementation, the token is just the serialized interface name that
657        // the caller expects to be invoking
658        const jchar* str = env->GetStringCritical(name, 0);
659        if (str != NULL) {
660            parcel->writeInterfaceToken(String16(
661                  reinterpret_cast<const char16_t*>(str),
662                  env->GetStringLength(name)));
663            env->ReleaseStringCritical(name, str);
664        }
665    }
666}
667
668static void android_os_Parcel_enforceInterface(JNIEnv* env, jclass clazz, jlong nativePtr, jstring name)
669{
670    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
671    if (parcel != NULL) {
672        const jchar* str = env->GetStringCritical(name, 0);
673        if (str) {
674            IPCThreadState* threadState = IPCThreadState::self();
675            const int32_t oldPolicy = threadState->getStrictModePolicy();
676            const bool isValid = parcel->enforceInterface(
677                String16(reinterpret_cast<const char16_t*>(str),
678                         env->GetStringLength(name)),
679                threadState);
680            env->ReleaseStringCritical(name, str);
681            if (isValid) {
682                const int32_t newPolicy = threadState->getStrictModePolicy();
683                if (oldPolicy != newPolicy) {
684                    // Need to keep the Java-level thread-local strict
685                    // mode policy in sync for the libcore
686                    // enforcements, which involves an upcall back
687                    // into Java.  (We can't modify the
688                    // Parcel.enforceInterface signature, as it's
689                    // pseudo-public, and used via AIDL
690                    // auto-generation...)
691                    set_dalvik_blockguard_policy(env, newPolicy);
692                }
693                return;     // everything was correct -> return silently
694            }
695        }
696    }
697
698    // all error conditions wind up here
699    jniThrowException(env, "java/lang/SecurityException",
700            "Binder invocation to an incorrect interface");
701}
702
703static jlong android_os_Parcel_getGlobalAllocSize(JNIEnv* env, jclass clazz)
704{
705    return Parcel::getGlobalAllocSize();
706}
707
708static jlong android_os_Parcel_getGlobalAllocCount(JNIEnv* env, jclass clazz)
709{
710    return Parcel::getGlobalAllocCount();
711}
712
713static jlong android_os_Parcel_getBlobAshmemSize(JNIEnv* env, jclass clazz, jlong nativePtr)
714{
715    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
716    if (parcel != NULL) {
717        return parcel->getBlobAshmemSize();
718    }
719    return 0;
720}
721
722// ----------------------------------------------------------------------------
723
724static const JNINativeMethod gParcelMethods[] = {
725    {"nativeDataSize",            "!(J)I", (void*)android_os_Parcel_dataSize},
726    {"nativeDataAvail",           "!(J)I", (void*)android_os_Parcel_dataAvail},
727    {"nativeDataPosition",        "!(J)I", (void*)android_os_Parcel_dataPosition},
728    {"nativeDataCapacity",        "!(J)I", (void*)android_os_Parcel_dataCapacity},
729    {"nativeSetDataSize",         "!(JI)J", (void*)android_os_Parcel_setDataSize},
730    {"nativeSetDataPosition",     "!(JI)V", (void*)android_os_Parcel_setDataPosition},
731    {"nativeSetDataCapacity",     "!(JI)V", (void*)android_os_Parcel_setDataCapacity},
732
733    {"nativePushAllowFds",        "!(JZ)Z", (void*)android_os_Parcel_pushAllowFds},
734    {"nativeRestoreAllowFds",     "!(JZ)V", (void*)android_os_Parcel_restoreAllowFds},
735
736    {"nativeWriteByteArray",      "(J[BII)V", (void*)android_os_Parcel_writeNative},
737    {"nativeWriteBlob",           "(J[BII)V", (void*)android_os_Parcel_writeBlob},
738    {"nativeWriteInt",            "!(JI)V", (void*)android_os_Parcel_writeInt},
739    {"nativeWriteLong",           "!(JJ)V", (void*)android_os_Parcel_writeLong},
740    {"nativeWriteFloat",          "!(JF)V", (void*)android_os_Parcel_writeFloat},
741    {"nativeWriteDouble",         "!(JD)V", (void*)android_os_Parcel_writeDouble},
742    {"nativeWriteString",         "(JLjava/lang/String;)V", (void*)android_os_Parcel_writeString},
743    {"nativeWriteStrongBinder",   "(JLandroid/os/IBinder;)V", (void*)android_os_Parcel_writeStrongBinder},
744    {"nativeWriteFileDescriptor", "(JLjava/io/FileDescriptor;)J", (void*)android_os_Parcel_writeFileDescriptor},
745
746    {"nativeCreateByteArray",     "(J)[B", (void*)android_os_Parcel_createByteArray},
747    {"nativeReadBlob",            "(J)[B", (void*)android_os_Parcel_readBlob},
748    {"nativeReadInt",             "!(J)I", (void*)android_os_Parcel_readInt},
749    {"nativeReadLong",            "!(J)J", (void*)android_os_Parcel_readLong},
750    {"nativeReadFloat",           "!(J)F", (void*)android_os_Parcel_readFloat},
751    {"nativeReadDouble",          "!(J)D", (void*)android_os_Parcel_readDouble},
752    {"nativeReadString",          "(J)Ljava/lang/String;", (void*)android_os_Parcel_readString},
753    {"nativeReadStrongBinder",    "(J)Landroid/os/IBinder;", (void*)android_os_Parcel_readStrongBinder},
754    {"nativeReadFileDescriptor",  "(J)Ljava/io/FileDescriptor;", (void*)android_os_Parcel_readFileDescriptor},
755
756    {"openFileDescriptor",        "(Ljava/lang/String;I)Ljava/io/FileDescriptor;", (void*)android_os_Parcel_openFileDescriptor},
757    {"dupFileDescriptor",         "(Ljava/io/FileDescriptor;)Ljava/io/FileDescriptor;", (void*)android_os_Parcel_dupFileDescriptor},
758    {"closeFileDescriptor",       "(Ljava/io/FileDescriptor;)V", (void*)android_os_Parcel_closeFileDescriptor},
759    {"clearFileDescriptor",       "(Ljava/io/FileDescriptor;)V", (void*)android_os_Parcel_clearFileDescriptor},
760
761    {"nativeCreate",              "()J", (void*)android_os_Parcel_create},
762    {"nativeFreeBuffer",          "(J)J", (void*)android_os_Parcel_freeBuffer},
763    {"nativeDestroy",             "(J)V", (void*)android_os_Parcel_destroy},
764
765    {"nativeMarshall",            "(J)[B", (void*)android_os_Parcel_marshall},
766    {"nativeUnmarshall",          "(J[BII)J", (void*)android_os_Parcel_unmarshall},
767    {"nativeAppendFrom",          "(JJII)J", (void*)android_os_Parcel_appendFrom},
768    {"nativeHasFileDescriptors",  "!(J)Z", (void*)android_os_Parcel_hasFileDescriptors},
769    {"nativeWriteInterfaceToken", "(JLjava/lang/String;)V", (void*)android_os_Parcel_writeInterfaceToken},
770    {"nativeEnforceInterface",    "(JLjava/lang/String;)V", (void*)android_os_Parcel_enforceInterface},
771
772    {"getGlobalAllocSize",        "()J", (void*)android_os_Parcel_getGlobalAllocSize},
773    {"getGlobalAllocCount",       "()J", (void*)android_os_Parcel_getGlobalAllocCount},
774
775    {"nativeGetBlobAshmemSize",       "(J)J", (void*)android_os_Parcel_getBlobAshmemSize},
776};
777
778const char* const kParcelPathName = "android/os/Parcel";
779
780int register_android_os_Parcel(JNIEnv* env)
781{
782    jclass clazz = FindClassOrDie(env, kParcelPathName);
783
784    gParcelOffsets.clazz = MakeGlobalRefOrDie(env, clazz);
785    gParcelOffsets.mNativePtr = GetFieldIDOrDie(env, clazz, "mNativePtr", "J");
786    gParcelOffsets.obtain = GetStaticMethodIDOrDie(env, clazz, "obtain", "()Landroid/os/Parcel;");
787    gParcelOffsets.recycle = GetMethodIDOrDie(env, clazz, "recycle", "()V");
788
789    return RegisterMethodsOrDie(env, kParcelPathName, gParcelMethods, NELEM(gParcelMethods));
790}
791
792};
793