1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
|
/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.server;
import com.android.internal.app.IMediaContainerService;
import com.android.server.am.ActivityManagerService;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.ServiceConnection;
import android.content.pm.PackageManager;
import android.content.res.ObbInfo;
import android.net.Uri;
import android.os.Binder;
import android.os.Environment;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.IBinder;
import android.os.Looper;
import android.os.Message;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.os.storage.IMountService;
import android.os.storage.IMountServiceListener;
import android.os.storage.IMountShutdownObserver;
import android.os.storage.IObbActionListener;
import android.os.storage.StorageResultCode;
import android.util.Slog;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
/**
* MountService implements back-end services for platform storage
* management.
* @hide - Applications should use android.os.storage.StorageManager
* to access the MountService.
*/
class MountService extends IMountService.Stub
implements INativeDaemonConnectorCallbacks {
private static final boolean LOCAL_LOGD = false;
private static final boolean DEBUG_UNMOUNT = false;
private static final boolean DEBUG_EVENTS = false;
private static final boolean DEBUG_OBB = true;
private static final String TAG = "MountService";
private static final String VOLD_TAG = "VoldConnector";
/*
* Internal vold volume state constants
*/
class VolumeState {
public static final int Init = -1;
public static final int NoMedia = 0;
public static final int Idle = 1;
public static final int Pending = 2;
public static final int Checking = 3;
public static final int Mounted = 4;
public static final int Unmounting = 5;
public static final int Formatting = 6;
public static final int Shared = 7;
public static final int SharedMnt = 8;
}
/*
* Internal vold response code constants
*/
class VoldResponseCode {
/*
* 100 series - Requestion action was initiated; expect another reply
* before proceeding with a new command.
*/
public static final int VolumeListResult = 110;
public static final int AsecListResult = 111;
public static final int StorageUsersListResult = 112;
/*
* 200 series - Requestion action has been successfully completed.
*/
public static final int ShareStatusResult = 210;
public static final int AsecPathResult = 211;
public static final int ShareEnabledResult = 212;
/*
* 400 series - Command was accepted, but the requested action
* did not take place.
*/
public static final int OpFailedNoMedia = 401;
public static final int OpFailedMediaBlank = 402;
public static final int OpFailedMediaCorrupt = 403;
public static final int OpFailedVolNotMounted = 404;
public static final int OpFailedStorageBusy = 405;
public static final int OpFailedStorageNotFound = 406;
/*
* 600 series - Unsolicited broadcasts.
*/
public static final int VolumeStateChange = 605;
public static final int ShareAvailabilityChange = 620;
public static final int VolumeDiskInserted = 630;
public static final int VolumeDiskRemoved = 631;
public static final int VolumeBadRemoval = 632;
}
private Context mContext;
private NativeDaemonConnector mConnector;
private String mLegacyState = Environment.MEDIA_REMOVED;
private PackageManagerService mPms;
private boolean mUmsEnabling;
// Used as a lock for methods that register/unregister listeners.
final private ArrayList<MountServiceBinderListener> mListeners =
new ArrayList<MountServiceBinderListener>();
private boolean mBooted = false;
private boolean mReady = false;
private boolean mSendUmsConnectedOnBoot = false;
/**
* Private hash of currently mounted secure containers.
* Used as a lock in methods to manipulate secure containers.
*/
final private HashSet<String> mAsecMountSet = new HashSet<String>();
/**
* Mounted OBB tracking information. Used to track the current state of all
* OBBs.
*/
final private Map<IObbActionListener, List<ObbState>> mObbMounts = new HashMap<IObbActionListener, List<ObbState>>();
final private Map<String, ObbState> mObbPathToStateMap = new HashMap<String, ObbState>();
class ObbState implements IBinder.DeathRecipient {
public ObbState(String filename, IObbActionListener token, int callerUid) {
this.filename = filename;
this.token = token;
this.callerUid = callerUid;
mounted = false;
}
// OBB source filename
final String filename;
// Token of remote Binder caller
final IObbActionListener token;
// Binder.callingUid()
final public int callerUid;
// Whether this is mounted currently.
boolean mounted;
@Override
public void binderDied() {
ObbAction action = new UnmountObbAction(this, true);
mObbActionHandler.sendMessage(mObbActionHandler.obtainMessage(OBB_RUN_ACTION, action));
removeObbState(this);
token.asBinder().unlinkToDeath(this, 0);
}
}
// OBB Action Handler
final private ObbActionHandler mObbActionHandler;
// OBB action handler messages
private static final int OBB_RUN_ACTION = 1;
private static final int OBB_MCS_BOUND = 2;
private static final int OBB_MCS_UNBIND = 3;
private static final int OBB_MCS_RECONNECT = 4;
private static final int OBB_MCS_GIVE_UP = 5;
/*
* Default Container Service information
*/
static final ComponentName DEFAULT_CONTAINER_COMPONENT = new ComponentName(
"com.android.defcontainer", "com.android.defcontainer.DefaultContainerService");
final private DefaultContainerConnection mDefContainerConn = new DefaultContainerConnection();
class DefaultContainerConnection implements ServiceConnection {
public void onServiceConnected(ComponentName name, IBinder service) {
if (DEBUG_OBB)
Slog.i(TAG, "onServiceConnected");
IMediaContainerService imcs = IMediaContainerService.Stub.asInterface(service);
mObbActionHandler.sendMessage(mObbActionHandler.obtainMessage(OBB_MCS_BOUND, imcs));
}
public void onServiceDisconnected(ComponentName name) {
if (DEBUG_OBB)
Slog.i(TAG, "onServiceDisconnected");
}
};
// Used in the ObbActionHandler
private IMediaContainerService mContainerService = null;
// Handler messages
private static final int H_UNMOUNT_PM_UPDATE = 1;
private static final int H_UNMOUNT_PM_DONE = 2;
private static final int H_UNMOUNT_MS = 3;
private static final int RETRY_UNMOUNT_DELAY = 30; // in ms
private static final int MAX_UNMOUNT_RETRIES = 4;
class UnmountCallBack {
final String path;
final boolean force;
int retries;
UnmountCallBack(String path, boolean force) {
retries = 0;
this.path = path;
this.force = force;
}
void handleFinished() {
if (DEBUG_UNMOUNT) Slog.i(TAG, "Unmounting " + path);
doUnmountVolume(path, true);
}
}
class UmsEnableCallBack extends UnmountCallBack {
final String method;
UmsEnableCallBack(String path, String method, boolean force) {
super(path, force);
this.method = method;
}
@Override
void handleFinished() {
super.handleFinished();
doShareUnshareVolume(path, method, true);
}
}
class ShutdownCallBack extends UnmountCallBack {
IMountShutdownObserver observer;
ShutdownCallBack(String path, IMountShutdownObserver observer) {
super(path, true);
this.observer = observer;
}
@Override
void handleFinished() {
int ret = doUnmountVolume(path, true);
if (observer != null) {
try {
observer.onShutDownComplete(ret);
} catch (RemoteException e) {
Slog.w(TAG, "RemoteException when shutting down");
}
}
}
}
class MountServiceHandler extends Handler {
ArrayList<UnmountCallBack> mForceUnmounts = new ArrayList<UnmountCallBack>();
boolean mUpdatingStatus = false;
MountServiceHandler(Looper l) {
super(l);
}
public void handleMessage(Message msg) {
switch (msg.what) {
case H_UNMOUNT_PM_UPDATE: {
if (DEBUG_UNMOUNT) Slog.i(TAG, "H_UNMOUNT_PM_UPDATE");
UnmountCallBack ucb = (UnmountCallBack) msg.obj;
mForceUnmounts.add(ucb);
if (DEBUG_UNMOUNT) Slog.i(TAG, " registered = " + mUpdatingStatus);
// Register only if needed.
if (!mUpdatingStatus) {
if (DEBUG_UNMOUNT) Slog.i(TAG, "Updating external media status on PackageManager");
mUpdatingStatus = true;
mPms.updateExternalMediaStatus(false, true);
}
break;
}
case H_UNMOUNT_PM_DONE: {
if (DEBUG_UNMOUNT) Slog.i(TAG, "H_UNMOUNT_PM_DONE");
if (DEBUG_UNMOUNT) Slog.i(TAG, "Updated status. Processing requests");
mUpdatingStatus = false;
int size = mForceUnmounts.size();
int sizeArr[] = new int[size];
int sizeArrN = 0;
// Kill processes holding references first
ActivityManagerService ams = (ActivityManagerService)
ServiceManager.getService("activity");
for (int i = 0; i < size; i++) {
UnmountCallBack ucb = mForceUnmounts.get(i);
String path = ucb.path;
boolean done = false;
if (!ucb.force) {
done = true;
} else {
int pids[] = getStorageUsers(path);
if (pids == null || pids.length == 0) {
done = true;
} else {
// Eliminate system process here?
ams.killPids(pids, "unmount media");
// Confirm if file references have been freed.
pids = getStorageUsers(path);
if (pids == null || pids.length == 0) {
done = true;
}
}
}
if (!done && (ucb.retries < MAX_UNMOUNT_RETRIES)) {
// Retry again
Slog.i(TAG, "Retrying to kill storage users again");
mHandler.sendMessageDelayed(
mHandler.obtainMessage(H_UNMOUNT_PM_DONE,
ucb.retries++),
RETRY_UNMOUNT_DELAY);
} else {
if (ucb.retries >= MAX_UNMOUNT_RETRIES) {
Slog.i(TAG, "Failed to unmount media inspite of " +
MAX_UNMOUNT_RETRIES + " retries. Forcibly killing processes now");
}
sizeArr[sizeArrN++] = i;
mHandler.sendMessage(mHandler.obtainMessage(H_UNMOUNT_MS,
ucb));
}
}
// Remove already processed elements from list.
for (int i = (sizeArrN-1); i >= 0; i--) {
mForceUnmounts.remove(sizeArr[i]);
}
break;
}
case H_UNMOUNT_MS : {
if (DEBUG_UNMOUNT) Slog.i(TAG, "H_UNMOUNT_MS");
UnmountCallBack ucb = (UnmountCallBack) msg.obj;
ucb.handleFinished();
break;
}
}
}
};
final private HandlerThread mHandlerThread;
final private Handler mHandler;
private void waitForReady() {
while (mReady == false) {
for (int retries = 5; retries > 0; retries--) {
if (mReady) {
return;
}
SystemClock.sleep(1000);
}
Slog.w(TAG, "Waiting too long for mReady!");
}
}
private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action.equals(Intent.ACTION_BOOT_COMPLETED)) {
mBooted = true;
/*
* In the simulator, we need to broadcast a volume mounted event
* to make the media scanner run.
*/
if ("simulator".equals(SystemProperties.get("ro.product.device"))) {
notifyVolumeStateChange(null, "/sdcard", VolumeState.NoMedia, VolumeState.Mounted);
return;
}
new Thread() {
public void run() {
try {
String path = Environment.getExternalStorageDirectory().getPath();
String state = getVolumeState(path);
if (state.equals(Environment.MEDIA_UNMOUNTED)) {
int rc = doMountVolume(path);
if (rc != StorageResultCode.OperationSucceeded) {
Slog.e(TAG, String.format("Boot-time mount failed (%d)", rc));
}
} else if (state.equals(Environment.MEDIA_SHARED)) {
/*
* Bootstrap UMS enabled state since vold indicates
* the volume is shared (runtime restart while ums enabled)
*/
notifyVolumeStateChange(null, path, VolumeState.NoMedia, VolumeState.Shared);
}
/*
* If UMS was connected on boot, send the connected event
* now that we're up.
*/
if (mSendUmsConnectedOnBoot) {
sendUmsIntent(true);
mSendUmsConnectedOnBoot = false;
}
} catch (Exception ex) {
Slog.e(TAG, "Boot-time mount exception", ex);
}
}
}.start();
}
}
};
private final class MountServiceBinderListener implements IBinder.DeathRecipient {
final IMountServiceListener mListener;
MountServiceBinderListener(IMountServiceListener listener) {
mListener = listener;
}
public void binderDied() {
if (LOCAL_LOGD) Slog.d(TAG, "An IMountServiceListener has died!");
synchronized (mListeners) {
mListeners.remove(this);
mListener.asBinder().unlinkToDeath(this, 0);
}
}
}
private void doShareUnshareVolume(String path, String method, boolean enable) {
// TODO: Add support for multiple share methods
if (!method.equals("ums")) {
throw new IllegalArgumentException(String.format("Method %s not supported", method));
}
try {
mConnector.doCommand(String.format(
"volume %sshare %s %s", (enable ? "" : "un"), path, method));
} catch (NativeDaemonConnectorException e) {
Slog.e(TAG, "Failed to share/unshare", e);
}
}
private void updatePublicVolumeState(String path, String state) {
if (!path.equals(Environment.getExternalStorageDirectory().getPath())) {
Slog.w(TAG, "Multiple volumes not currently supported");
return;
}
if (mLegacyState.equals(state)) {
Slog.w(TAG, String.format("Duplicate state transition (%s -> %s)", mLegacyState, state));
return;
}
// Update state on PackageManager
if (Environment.MEDIA_UNMOUNTED.equals(state)) {
mPms.updateExternalMediaStatus(false, false);
} else if (Environment.MEDIA_MOUNTED.equals(state)) {
mPms.updateExternalMediaStatus(true, false);
}
String oldState = mLegacyState;
mLegacyState = state;
synchronized (mListeners) {
for (int i = mListeners.size() -1; i >= 0; i--) {
MountServiceBinderListener bl = mListeners.get(i);
try {
bl.mListener.onStorageStateChanged(path, oldState, state);
} catch (RemoteException rex) {
Slog.e(TAG, "Listener dead");
mListeners.remove(i);
} catch (Exception ex) {
Slog.e(TAG, "Listener failed", ex);
}
}
}
}
/**
*
* Callback from NativeDaemonConnector
*/
public void onDaemonConnected() {
/*
* Since we'll be calling back into the NativeDaemonConnector,
* we need to do our work in a new thread.
*/
new Thread() {
public void run() {
/**
* Determine media state and UMS detection status
*/
String path = Environment.getExternalStorageDirectory().getPath();
String state = Environment.MEDIA_REMOVED;
try {
String[] vols = mConnector.doListCommand(
"volume list", VoldResponseCode.VolumeListResult);
for (String volstr : vols) {
String[] tok = volstr.split(" ");
// FMT: <label> <mountpoint> <state>
if (!tok[1].equals(path)) {
Slog.w(TAG, String.format(
"Skipping unknown volume '%s'",tok[1]));
continue;
}
int st = Integer.parseInt(tok[2]);
if (st == VolumeState.NoMedia) {
state = Environment.MEDIA_REMOVED;
} else if (st == VolumeState.Idle) {
state = Environment.MEDIA_UNMOUNTED;
} else if (st == VolumeState.Mounted) {
state = Environment.MEDIA_MOUNTED;
Slog.i(TAG, "Media already mounted on daemon connection");
} else if (st == VolumeState.Shared) {
state = Environment.MEDIA_SHARED;
Slog.i(TAG, "Media shared on daemon connection");
} else {
throw new Exception(String.format("Unexpected state %d", st));
}
}
if (state != null) {
if (DEBUG_EVENTS) Slog.i(TAG, "Updating valid state " + state);
updatePublicVolumeState(path, state);
}
} catch (Exception e) {
Slog.e(TAG, "Error processing initial volume state", e);
updatePublicVolumeState(path, Environment.MEDIA_REMOVED);
}
try {
boolean avail = doGetShareMethodAvailable("ums");
notifyShareAvailabilityChange("ums", avail);
} catch (Exception ex) {
Slog.w(TAG, "Failed to get share availability");
}
/*
* Now that we've done our initialization, release
* the hounds!
*/
mReady = true;
}
}.start();
}
/**
* Callback from NativeDaemonConnector
*/
public boolean onEvent(int code, String raw, String[] cooked) {
Intent in = null;
if (DEBUG_EVENTS) {
StringBuilder builder = new StringBuilder();
builder.append("onEvent::");
builder.append(" raw= " + raw);
if (cooked != null) {
builder.append(" cooked = " );
for (String str : cooked) {
builder.append(" " + str);
}
}
Slog.i(TAG, builder.toString());
}
if (code == VoldResponseCode.VolumeStateChange) {
/*
* One of the volumes we're managing has changed state.
* Format: "NNN Volume <label> <path> state changed
* from <old_#> (<old_str>) to <new_#> (<new_str>)"
*/
notifyVolumeStateChange(
cooked[2], cooked[3], Integer.parseInt(cooked[7]),
Integer.parseInt(cooked[10]));
} else if (code == VoldResponseCode.ShareAvailabilityChange) {
// FMT: NNN Share method <method> now <available|unavailable>
boolean avail = false;
if (cooked[5].equals("available")) {
avail = true;
}
notifyShareAvailabilityChange(cooked[3], avail);
} else if ((code == VoldResponseCode.VolumeDiskInserted) ||
(code == VoldResponseCode.VolumeDiskRemoved) ||
(code == VoldResponseCode.VolumeBadRemoval)) {
// FMT: NNN Volume <label> <mountpoint> disk inserted (<major>:<minor>)
// FMT: NNN Volume <label> <mountpoint> disk removed (<major>:<minor>)
// FMT: NNN Volume <label> <mountpoint> bad removal (<major>:<minor>)
final String label = cooked[2];
final String path = cooked[3];
int major = -1;
int minor = -1;
try {
String devComp = cooked[6].substring(1, cooked[6].length() -1);
String[] devTok = devComp.split(":");
major = Integer.parseInt(devTok[0]);
minor = Integer.parseInt(devTok[1]);
} catch (Exception ex) {
Slog.e(TAG, "Failed to parse major/minor", ex);
}
if (code == VoldResponseCode.VolumeDiskInserted) {
new Thread() {
public void run() {
try {
int rc;
if ((rc = doMountVolume(path)) != StorageResultCode.OperationSucceeded) {
Slog.w(TAG, String.format("Insertion mount failed (%d)", rc));
}
} catch (Exception ex) {
Slog.w(TAG, "Failed to mount media on insertion", ex);
}
}
}.start();
} else if (code == VoldResponseCode.VolumeDiskRemoved) {
/*
* This event gets trumped if we're already in BAD_REMOVAL state
*/
if (getVolumeState(path).equals(Environment.MEDIA_BAD_REMOVAL)) {
return true;
}
/* Send the media unmounted event first */
if (DEBUG_EVENTS) Slog.i(TAG, "Sending unmounted event first");
updatePublicVolumeState(path, Environment.MEDIA_UNMOUNTED);
in = new Intent(Intent.ACTION_MEDIA_UNMOUNTED, Uri.parse("file://" + path));
mContext.sendBroadcast(in);
if (DEBUG_EVENTS) Slog.i(TAG, "Sending media removed");
updatePublicVolumeState(path, Environment.MEDIA_REMOVED);
in = new Intent(Intent.ACTION_MEDIA_REMOVED, Uri.parse("file://" + path));
} else if (code == VoldResponseCode.VolumeBadRemoval) {
if (DEBUG_EVENTS) Slog.i(TAG, "Sending unmounted event first");
/* Send the media unmounted event first */
updatePublicVolumeState(path, Environment.MEDIA_UNMOUNTED);
in = new Intent(Intent.ACTION_MEDIA_UNMOUNTED, Uri.parse("file://" + path));
mContext.sendBroadcast(in);
if (DEBUG_EVENTS) Slog.i(TAG, "Sending media bad removal");
updatePublicVolumeState(path, Environment.MEDIA_BAD_REMOVAL);
in = new Intent(Intent.ACTION_MEDIA_BAD_REMOVAL, Uri.parse("file://" + path));
} else {
Slog.e(TAG, String.format("Unknown code {%d}", code));
}
} else {
return false;
}
if (in != null) {
mContext.sendBroadcast(in);
}
return true;
}
private void notifyVolumeStateChange(String label, String path, int oldState, int newState) {
String vs = getVolumeState(path);
if (DEBUG_EVENTS) Slog.i(TAG, "notifyVolumeStateChanged::" + vs);
Intent in = null;
if (oldState == VolumeState.Shared && newState != oldState) {
if (LOCAL_LOGD) Slog.d(TAG, "Sending ACTION_MEDIA_UNSHARED intent");
mContext.sendBroadcast(new Intent(Intent.ACTION_MEDIA_UNSHARED,
Uri.parse("file://" + path)));
}
if (newState == VolumeState.Init) {
} else if (newState == VolumeState.NoMedia) {
// NoMedia is handled via Disk Remove events
} else if (newState == VolumeState.Idle) {
/*
* Don't notify if we're in BAD_REMOVAL, NOFS, UNMOUNTABLE, or
* if we're in the process of enabling UMS
*/
if (!vs.equals(
Environment.MEDIA_BAD_REMOVAL) && !vs.equals(
Environment.MEDIA_NOFS) && !vs.equals(
Environment.MEDIA_UNMOUNTABLE) && !getUmsEnabling()) {
if (DEBUG_EVENTS) Slog.i(TAG, "updating volume state for media bad removal nofs and unmountable");
updatePublicVolumeState(path, Environment.MEDIA_UNMOUNTED);
in = new Intent(Intent.ACTION_MEDIA_UNMOUNTED, Uri.parse("file://" + path));
}
} else if (newState == VolumeState.Pending) {
} else if (newState == VolumeState.Checking) {
if (DEBUG_EVENTS) Slog.i(TAG, "updating volume state checking");
updatePublicVolumeState(path, Environment.MEDIA_CHECKING);
in = new Intent(Intent.ACTION_MEDIA_CHECKING, Uri.parse("file://" + path));
} else if (newState == VolumeState.Mounted) {
if (DEBUG_EVENTS) Slog.i(TAG, "updating volume state mounted");
updatePublicVolumeState(path, Environment.MEDIA_MOUNTED);
in = new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://" + path));
in.putExtra("read-only", false);
} else if (newState == VolumeState.Unmounting) {
in = new Intent(Intent.ACTION_MEDIA_EJECT, Uri.parse("file://" + path));
} else if (newState == VolumeState.Formatting) {
} else if (newState == VolumeState.Shared) {
if (DEBUG_EVENTS) Slog.i(TAG, "Updating volume state media mounted");
/* Send the media unmounted event first */
updatePublicVolumeState(path, Environment.MEDIA_UNMOUNTED);
in = new Intent(Intent.ACTION_MEDIA_UNMOUNTED, Uri.parse("file://" + path));
mContext.sendBroadcast(in);
if (DEBUG_EVENTS) Slog.i(TAG, "Updating media shared");
updatePublicVolumeState(path, Environment.MEDIA_SHARED);
in = new Intent(Intent.ACTION_MEDIA_SHARED, Uri.parse("file://" + path));
if (LOCAL_LOGD) Slog.d(TAG, "Sending ACTION_MEDIA_SHARED intent");
} else if (newState == VolumeState.SharedMnt) {
Slog.e(TAG, "Live shared mounts not supported yet!");
return;
} else {
Slog.e(TAG, "Unhandled VolumeState {" + newState + "}");
}
if (in != null) {
mContext.sendBroadcast(in);
}
}
private boolean doGetShareMethodAvailable(String method) {
ArrayList<String> rsp;
try {
rsp = mConnector.doCommand("share status " + method);
} catch (NativeDaemonConnectorException ex) {
Slog.e(TAG, "Failed to determine whether share method " + method + " is available.");
return false;
}
for (String line : rsp) {
String[] tok = line.split(" ");
if (tok.length < 3) {
Slog.e(TAG, "Malformed response to share status " + method);
return false;
}
int code;
try {
code = Integer.parseInt(tok[0]);
} catch (NumberFormatException nfe) {
Slog.e(TAG, String.format("Error parsing code %s", tok[0]));
return false;
}
if (code == VoldResponseCode.ShareStatusResult) {
if (tok[2].equals("available"))
return true;
return false;
} else {
Slog.e(TAG, String.format("Unexpected response code %d", code));
return false;
}
}
Slog.e(TAG, "Got an empty response");
return false;
}
private int doMountVolume(String path) {
int rc = StorageResultCode.OperationSucceeded;
if (DEBUG_EVENTS) Slog.i(TAG, "doMountVolume: Mouting " + path);
try {
mConnector.doCommand(String.format("volume mount %s", path));
} catch (NativeDaemonConnectorException e) {
/*
* Mount failed for some reason
*/
Intent in = null;
int code = e.getCode();
if (code == VoldResponseCode.OpFailedNoMedia) {
/*
* Attempt to mount but no media inserted
*/
rc = StorageResultCode.OperationFailedNoMedia;
} else if (code == VoldResponseCode.OpFailedMediaBlank) {
if (DEBUG_EVENTS) Slog.i(TAG, " updating volume state :: media nofs");
/*
* Media is blank or does not contain a supported filesystem
*/
updatePublicVolumeState(path, Environment.MEDIA_NOFS);
in = new Intent(Intent.ACTION_MEDIA_NOFS, Uri.parse("file://" + path));
rc = StorageResultCode.OperationFailedMediaBlank;
} else if (code == VoldResponseCode.OpFailedMediaCorrupt) {
if (DEBUG_EVENTS) Slog.i(TAG, "updating volume state media corrupt");
/*
* Volume consistency check failed
*/
updatePublicVolumeState(path, Environment.MEDIA_UNMOUNTABLE);
in = new Intent(Intent.ACTION_MEDIA_UNMOUNTABLE, Uri.parse("file://" + path));
rc = StorageResultCode.OperationFailedMediaCorrupt;
} else {
rc = StorageResultCode.OperationFailedInternalError;
}
/*
* Send broadcast intent (if required for the failure)
*/
if (in != null) {
mContext.sendBroadcast(in);
}
}
return rc;
}
/*
* If force is not set, we do not unmount if there are
* processes holding references to the volume about to be unmounted.
* If force is set, all the processes holding references need to be
* killed via the ActivityManager before actually unmounting the volume.
* This might even take a while and might be retried after timed delays
* to make sure we dont end up in an instable state and kill some core
* processes.
*/
private int doUnmountVolume(String path, boolean force) {
if (!getVolumeState(path).equals(Environment.MEDIA_MOUNTED)) {
return VoldResponseCode.OpFailedVolNotMounted;
}
/*
* Force a GC to make sure AssetManagers in other threads of the
* system_server are cleaned up. We have to do this since AssetManager
* instances are kept as a WeakReference and it's possible we have files
* open on the external storage.
*/
Runtime.getRuntime().gc();
// Redundant probably. But no harm in updating state again.
mPms.updateExternalMediaStatus(false, false);
try {
mConnector.doCommand(String.format(
"volume unmount %s%s", path, (force ? " force" : "")));
// We unmounted the volume. None of the asec containers are available now.
synchronized (mAsecMountSet) {
mAsecMountSet.clear();
}
return StorageResultCode.OperationSucceeded;
} catch (NativeDaemonConnectorException e) {
// Don't worry about mismatch in PackageManager since the
// call back will handle the status changes any way.
int code = e.getCode();
if (code == VoldResponseCode.OpFailedVolNotMounted) {
return StorageResultCode.OperationFailedStorageNotMounted;
} else if (code == VoldResponseCode.OpFailedStorageBusy) {
return StorageResultCode.OperationFailedStorageBusy;
} else {
return StorageResultCode.OperationFailedInternalError;
}
}
}
private int doFormatVolume(String path) {
try {
String cmd = String.format("volume format %s", path);
mConnector.doCommand(cmd);
return StorageResultCode.OperationSucceeded;
} catch (NativeDaemonConnectorException e) {
int code = e.getCode();
if (code == VoldResponseCode.OpFailedNoMedia) {
return StorageResultCode.OperationFailedNoMedia;
} else if (code == VoldResponseCode.OpFailedMediaCorrupt) {
return StorageResultCode.OperationFailedMediaCorrupt;
} else {
return StorageResultCode.OperationFailedInternalError;
}
}
}
private boolean doGetVolumeShared(String path, String method) {
String cmd = String.format("volume shared %s %s", path, method);
ArrayList<String> rsp;
try {
rsp = mConnector.doCommand(cmd);
} catch (NativeDaemonConnectorException ex) {
Slog.e(TAG, "Failed to read response to volume shared " + path + " " + method);
return false;
}
for (String line : rsp) {
String[] tok = line.split(" ");
if (tok.length < 3) {
Slog.e(TAG, "Malformed response to volume shared " + path + " " + method + " command");
return false;
}
int code;
try {
code = Integer.parseInt(tok[0]);
} catch (NumberFormatException nfe) {
Slog.e(TAG, String.format("Error parsing code %s", tok[0]));
return false;
}
if (code == VoldResponseCode.ShareEnabledResult) {
return "enabled".equals(tok[2]);
} else {
Slog.e(TAG, String.format("Unexpected response code %d", code));
return false;
}
}
Slog.e(TAG, "Got an empty response");
return false;
}
private void notifyShareAvailabilityChange(String method, final boolean avail) {
if (!method.equals("ums")) {
Slog.w(TAG, "Ignoring unsupported share method {" + method + "}");
return;
}
synchronized (mListeners) {
for (int i = mListeners.size() -1; i >= 0; i--) {
MountServiceBinderListener bl = mListeners.get(i);
try {
bl.mListener.onUsbMassStorageConnectionChanged(avail);
} catch (RemoteException rex) {
Slog.e(TAG, "Listener dead");
mListeners.remove(i);
} catch (Exception ex) {
Slog.e(TAG, "Listener failed", ex);
}
}
}
if (mBooted == true) {
sendUmsIntent(avail);
} else {
mSendUmsConnectedOnBoot = avail;
}
final String path = Environment.getExternalStorageDirectory().getPath();
if (avail == false && getVolumeState(path).equals(Environment.MEDIA_SHARED)) {
/*
* USB mass storage disconnected while enabled
*/
new Thread() {
public void run() {
try {
int rc;
Slog.w(TAG, "Disabling UMS after cable disconnect");
doShareUnshareVolume(path, "ums", false);
if ((rc = doMountVolume(path)) != StorageResultCode.OperationSucceeded) {
Slog.e(TAG, String.format(
"Failed to remount {%s} on UMS enabled-disconnect (%d)",
path, rc));
}
} catch (Exception ex) {
Slog.w(TAG, "Failed to mount media on UMS enabled-disconnect", ex);
}
}
}.start();
}
}
private void sendUmsIntent(boolean c) {
mContext.sendBroadcast(
new Intent((c ? Intent.ACTION_UMS_CONNECTED : Intent.ACTION_UMS_DISCONNECTED)));
}
private void validatePermission(String perm) {
if (mContext.checkCallingOrSelfPermission(perm) != PackageManager.PERMISSION_GRANTED) {
throw new SecurityException(String.format("Requires %s permission", perm));
}
}
/**
* Constructs a new MountService instance
*
* @param context Binder context for this service
*/
public MountService(Context context) {
mContext = context;
// XXX: This will go away soon in favor of IMountServiceObserver
mPms = (PackageManagerService) ServiceManager.getService("package");
mContext.registerReceiver(mBroadcastReceiver,
new IntentFilter(Intent.ACTION_BOOT_COMPLETED), null, null);
mHandlerThread = new HandlerThread("MountService");
mHandlerThread.start();
mHandler = new MountServiceHandler(mHandlerThread.getLooper());
// Add OBB Action Handler to MountService thread.
mObbActionHandler = new ObbActionHandler(mHandlerThread.getLooper());
/*
* Vold does not run in the simulator, so pretend the connector thread
* ran and did its thing.
*/
if ("simulator".equals(SystemProperties.get("ro.product.device"))) {
mReady = true;
mUmsEnabling = true;
return;
}
/*
* Create the connection to vold with a maximum queue of twice the
* amount of containers we'd ever expect to have. This keeps an
* "asec list" from blocking a thread repeatedly.
*/
mConnector = new NativeDaemonConnector(this, "vold",
PackageManagerService.MAX_CONTAINERS * 2, VOLD_TAG);
mReady = false;
Thread thread = new Thread(mConnector, VOLD_TAG);
thread.start();
}
/**
* Exposed API calls below here
*/
public void registerListener(IMountServiceListener listener) {
synchronized (mListeners) {
MountServiceBinderListener bl = new MountServiceBinderListener(listener);
try {
listener.asBinder().linkToDeath(bl, 0);
mListeners.add(bl);
} catch (RemoteException rex) {
Slog.e(TAG, "Failed to link to listener death");
}
}
}
public void unregisterListener(IMountServiceListener listener) {
synchronized (mListeners) {
for(MountServiceBinderListener bl : mListeners) {
if (bl.mListener == listener) {
mListeners.remove(mListeners.indexOf(bl));
return;
}
}
}
}
public void shutdown(final IMountShutdownObserver observer) {
validatePermission(android.Manifest.permission.SHUTDOWN);
Slog.i(TAG, "Shutting down");
String path = Environment.getExternalStorageDirectory().getPath();
String state = getVolumeState(path);
if (state.equals(Environment.MEDIA_SHARED)) {
/*
* If the media is currently shared, unshare it.
* XXX: This is still dangerous!. We should not
* be rebooting at *all* if UMS is enabled, since
* the UMS host could have dirty FAT cache entries
* yet to flush.
*/
setUsbMassStorageEnabled(false);
} else if (state.equals(Environment.MEDIA_CHECKING)) {
/*
* If the media is being checked, then we need to wait for
* it to complete before being able to proceed.
*/
// XXX: @hackbod - Should we disable the ANR timer here?
int retries = 30;
while (state.equals(Environment.MEDIA_CHECKING) && (retries-- >=0)) {
try {
Thread.sleep(1000);
} catch (InterruptedException iex) {
Slog.e(TAG, "Interrupted while waiting for media", iex);
break;
}
state = Environment.getExternalStorageState();
}
if (retries == 0) {
Slog.e(TAG, "Timed out waiting for media to check");
}
}
if (state.equals(Environment.MEDIA_MOUNTED)) {
// Post a unmount message.
ShutdownCallBack ucb = new ShutdownCallBack(path, observer);
mHandler.sendMessage(mHandler.obtainMessage(H_UNMOUNT_PM_UPDATE, ucb));
}
}
private boolean getUmsEnabling() {
synchronized (mListeners) {
return mUmsEnabling;
}
}
private void setUmsEnabling(boolean enable) {
synchronized (mListeners) {
mUmsEnabling = true;
}
}
public boolean isUsbMassStorageConnected() {
waitForReady();
if (getUmsEnabling()) {
return true;
}
return doGetShareMethodAvailable("ums");
}
public void setUsbMassStorageEnabled(boolean enable) {
waitForReady();
validatePermission(android.Manifest.permission.MOUNT_UNMOUNT_FILESYSTEMS);
// TODO: Add support for multiple share methods
/*
* If the volume is mounted and we're enabling then unmount it
*/
String path = Environment.getExternalStorageDirectory().getPath();
String vs = getVolumeState(path);
String method = "ums";
if (enable && vs.equals(Environment.MEDIA_MOUNTED)) {
// Override for isUsbMassStorageEnabled()
setUmsEnabling(enable);
UmsEnableCallBack umscb = new UmsEnableCallBack(path, method, true);
mHandler.sendMessage(mHandler.obtainMessage(H_UNMOUNT_PM_UPDATE, umscb));
// Clear override
setUmsEnabling(false);
}
/*
* If we disabled UMS then mount the volume
*/
if (!enable) {
doShareUnshareVolume(path, method, enable);
if (doMountVolume(path) != StorageResultCode.OperationSucceeded) {
Slog.e(TAG, "Failed to remount " + path +
" after disabling share method " + method);
/*
* Even though the mount failed, the unshare didn't so don't indicate an error.
* The mountVolume() call will have set the storage state and sent the necessary
* broadcasts.
*/
}
}
}
public boolean isUsbMassStorageEnabled() {
waitForReady();
return doGetVolumeShared(Environment.getExternalStorageDirectory().getPath(), "ums");
}
/**
* @return state of the volume at the specified mount point
*/
public String getVolumeState(String mountPoint) {
/*
* XXX: Until we have multiple volume discovery, just hardwire
* this to /sdcard
*/
if (!mountPoint.equals(Environment.getExternalStorageDirectory().getPath())) {
Slog.w(TAG, "getVolumeState(" + mountPoint + "): Unknown volume");
throw new IllegalArgumentException();
}
return mLegacyState;
}
public int mountVolume(String path) {
validatePermission(android.Manifest.permission.MOUNT_UNMOUNT_FILESYSTEMS);
waitForReady();
return doMountVolume(path);
}
public void unmountVolume(String path, boolean force) {
validatePermission(android.Manifest.permission.MOUNT_UNMOUNT_FILESYSTEMS);
waitForReady();
String volState = getVolumeState(path);
if (DEBUG_UNMOUNT) Slog.i(TAG, "Unmounting " + path + " force = " + force);
if (Environment.MEDIA_UNMOUNTED.equals(volState) ||
Environment.MEDIA_REMOVED.equals(volState) ||
Environment.MEDIA_SHARED.equals(volState) ||
Environment.MEDIA_UNMOUNTABLE.equals(volState)) {
// Media already unmounted or cannot be unmounted.
// TODO return valid return code when adding observer call back.
return;
}
UnmountCallBack ucb = new UnmountCallBack(path, force);
mHandler.sendMessage(mHandler.obtainMessage(H_UNMOUNT_PM_UPDATE, ucb));
}
public int formatVolume(String path) {
validatePermission(android.Manifest.permission.MOUNT_FORMAT_FILESYSTEMS);
waitForReady();
return doFormatVolume(path);
}
public int []getStorageUsers(String path) {
validatePermission(android.Manifest.permission.MOUNT_UNMOUNT_FILESYSTEMS);
waitForReady();
try {
String[] r = mConnector.doListCommand(
String.format("storage users %s", path),
VoldResponseCode.StorageUsersListResult);
// FMT: <pid> <process name>
int[] data = new int[r.length];
for (int i = 0; i < r.length; i++) {
String []tok = r[i].split(" ");
try {
data[i] = Integer.parseInt(tok[0]);
} catch (NumberFormatException nfe) {
Slog.e(TAG, String.format("Error parsing pid %s", tok[0]));
return new int[0];
}
}
return data;
} catch (NativeDaemonConnectorException e) {
Slog.e(TAG, "Failed to retrieve storage users list", e);
return new int[0];
}
}
private void warnOnNotMounted() {
if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
Slog.w(TAG, "getSecureContainerList() called when storage not mounted");
}
}
public String[] getSecureContainerList() {
validatePermission(android.Manifest.permission.ASEC_ACCESS);
waitForReady();
warnOnNotMounted();
try {
return mConnector.doListCommand("asec list", VoldResponseCode.AsecListResult);
} catch (NativeDaemonConnectorException e) {
return new String[0];
}
}
public int createSecureContainer(String id, int sizeMb, String fstype,
String key, int ownerUid) {
validatePermission(android.Manifest.permission.ASEC_CREATE);
waitForReady();
warnOnNotMounted();
int rc = StorageResultCode.OperationSucceeded;
String cmd = String.format("asec create %s %d %s %s %d", id, sizeMb, fstype, key, ownerUid);
try {
mConnector.doCommand(cmd);
} catch (NativeDaemonConnectorException e) {
rc = StorageResultCode.OperationFailedInternalError;
}
if (rc == StorageResultCode.OperationSucceeded) {
synchronized (mAsecMountSet) {
mAsecMountSet.add(id);
}
}
return rc;
}
public int finalizeSecureContainer(String id) {
validatePermission(android.Manifest.permission.ASEC_CREATE);
warnOnNotMounted();
int rc = StorageResultCode.OperationSucceeded;
try {
mConnector.doCommand(String.format("asec finalize %s", id));
/*
* Finalization does a remount, so no need
* to update mAsecMountSet
*/
} catch (NativeDaemonConnectorException e) {
rc = StorageResultCode.OperationFailedInternalError;
}
return rc;
}
public int destroySecureContainer(String id, boolean force) {
validatePermission(android.Manifest.permission.ASEC_DESTROY);
waitForReady();
warnOnNotMounted();
/*
* Force a GC to make sure AssetManagers in other threads of the
* system_server are cleaned up. We have to do this since AssetManager
* instances are kept as a WeakReference and it's possible we have files
* open on the external storage.
*/
Runtime.getRuntime().gc();
int rc = StorageResultCode.OperationSucceeded;
try {
mConnector.doCommand(String.format("asec destroy %s%s", id, (force ? " force" : "")));
} catch (NativeDaemonConnectorException e) {
int code = e.getCode();
if (code == VoldResponseCode.OpFailedStorageBusy) {
rc = StorageResultCode.OperationFailedStorageBusy;
} else {
rc = StorageResultCode.OperationFailedInternalError;
}
}
if (rc == StorageResultCode.OperationSucceeded) {
synchronized (mAsecMountSet) {
if (mAsecMountSet.contains(id)) {
mAsecMountSet.remove(id);
}
}
}
return rc;
}
public int mountSecureContainer(String id, String key, int ownerUid) {
validatePermission(android.Manifest.permission.ASEC_MOUNT_UNMOUNT);
waitForReady();
warnOnNotMounted();
synchronized (mAsecMountSet) {
if (mAsecMountSet.contains(id)) {
return StorageResultCode.OperationFailedStorageMounted;
}
}
int rc = StorageResultCode.OperationSucceeded;
String cmd = String.format("asec mount %s %s %d", id, key, ownerUid);
try {
mConnector.doCommand(cmd);
} catch (NativeDaemonConnectorException e) {
int code = e.getCode();
if (code != VoldResponseCode.OpFailedStorageBusy) {
rc = StorageResultCode.OperationFailedInternalError;
}
}
if (rc == StorageResultCode.OperationSucceeded) {
synchronized (mAsecMountSet) {
mAsecMountSet.add(id);
}
}
return rc;
}
public int unmountSecureContainer(String id, boolean force) {
validatePermission(android.Manifest.permission.ASEC_MOUNT_UNMOUNT);
waitForReady();
warnOnNotMounted();
synchronized (mAsecMountSet) {
if (!mAsecMountSet.contains(id)) {
return StorageResultCode.OperationFailedStorageNotMounted;
}
}
/*
* Force a GC to make sure AssetManagers in other threads of the
* system_server are cleaned up. We have to do this since AssetManager
* instances are kept as a WeakReference and it's possible we have files
* open on the external storage.
*/
Runtime.getRuntime().gc();
int rc = StorageResultCode.OperationSucceeded;
String cmd = String.format("asec unmount %s%s", id, (force ? " force" : ""));
try {
mConnector.doCommand(cmd);
} catch (NativeDaemonConnectorException e) {
int code = e.getCode();
if (code == VoldResponseCode.OpFailedStorageBusy) {
rc = StorageResultCode.OperationFailedStorageBusy;
} else {
rc = StorageResultCode.OperationFailedInternalError;
}
}
if (rc == StorageResultCode.OperationSucceeded) {
synchronized (mAsecMountSet) {
mAsecMountSet.remove(id);
}
}
return rc;
}
public boolean isSecureContainerMounted(String id) {
validatePermission(android.Manifest.permission.ASEC_ACCESS);
waitForReady();
warnOnNotMounted();
synchronized (mAsecMountSet) {
return mAsecMountSet.contains(id);
}
}
public int renameSecureContainer(String oldId, String newId) {
validatePermission(android.Manifest.permission.ASEC_RENAME);
waitForReady();
warnOnNotMounted();
synchronized (mAsecMountSet) {
/*
* Because a mounted container has active internal state which cannot be
* changed while active, we must ensure both ids are not currently mounted.
*/
if (mAsecMountSet.contains(oldId) || mAsecMountSet.contains(newId)) {
return StorageResultCode.OperationFailedStorageMounted;
}
}
int rc = StorageResultCode.OperationSucceeded;
String cmd = String.format("asec rename %s %s", oldId, newId);
try {
mConnector.doCommand(cmd);
} catch (NativeDaemonConnectorException e) {
rc = StorageResultCode.OperationFailedInternalError;
}
return rc;
}
public String getSecureContainerPath(String id) {
validatePermission(android.Manifest.permission.ASEC_ACCESS);
waitForReady();
warnOnNotMounted();
try {
ArrayList<String> rsp = mConnector.doCommand(String.format("asec path %s", id));
String []tok = rsp.get(0).split(" ");
int code = Integer.parseInt(tok[0]);
if (code != VoldResponseCode.AsecPathResult) {
throw new IllegalStateException(String.format("Unexpected response code %d", code));
}
return tok[1];
} catch (NativeDaemonConnectorException e) {
int code = e.getCode();
if (code == VoldResponseCode.OpFailedStorageNotFound) {
throw new IllegalArgumentException(String.format("Container '%s' not found", id));
} else {
throw new IllegalStateException(String.format("Unexpected response code %d", code));
}
}
}
public void finishMediaUpdate() {
mHandler.sendEmptyMessage(H_UNMOUNT_PM_DONE);
}
private boolean isCallerOwnerOfPackageOrSystem(String packageName) {
final int callerUid = Binder.getCallingUid();
return isUidOwnerOfPackageOrSystem(packageName, callerUid);
}
private boolean isUidOwnerOfPackageOrSystem(String packageName, int callerUid) {
if (callerUid == android.os.Process.SYSTEM_UID) {
return true;
}
if (packageName == null) {
return false;
}
final int packageUid = mPms.getPackageUid(packageName);
if (DEBUG_OBB) {
Slog.d(TAG, "packageName = " + packageName + ", packageUid = " +
packageUid + ", callerUid = " + callerUid);
}
return callerUid == packageUid;
}
public String getMountedObbPath(String filename) {
waitForReady();
warnOnNotMounted();
try {
ArrayList<String> rsp = mConnector.doCommand(String.format("obb path %s", filename));
String []tok = rsp.get(0).split(" ");
int code = Integer.parseInt(tok[0]);
if (code != VoldResponseCode.AsecPathResult) {
throw new IllegalStateException(String.format("Unexpected response code %d", code));
}
return tok[1];
} catch (NativeDaemonConnectorException e) {
int code = e.getCode();
if (code == VoldResponseCode.OpFailedStorageNotFound) {
return null;
} else {
throw new IllegalStateException(String.format("Unexpected response code %d", code));
}
}
}
public boolean isObbMounted(String filename) {
synchronized (mObbMounts) {
return mObbPathToStateMap.containsKey(filename);
}
}
public void mountObb(String filename, String key, IObbActionListener token) {
waitForReady();
warnOnNotMounted();
final ObbState obbState;
synchronized (mObbMounts) {
if (isObbMounted(filename)) {
throw new IllegalArgumentException("OBB file is already mounted");
}
final int callerUid = Binder.getCallingUid();
obbState = new ObbState(filename, token, callerUid);
addObbState(obbState);
}
try {
token.asBinder().linkToDeath(obbState, 0);
} catch (RemoteException rex) {
Slog.e(TAG, "Failed to link to listener death");
}
MountObbAction action = new MountObbAction(obbState, key);
mObbActionHandler.sendMessage(mObbActionHandler.obtainMessage(OBB_RUN_ACTION, action));
if (DEBUG_OBB)
Slog.i(TAG, "Send to OBB handler: " + action.toString());
}
public void unmountObb(String filename, boolean force, IObbActionListener token) {
final ObbState obbState;
synchronized (mObbMounts) {
if (!isObbMounted(filename)) {
throw new IllegalArgumentException("OBB is not mounted");
}
obbState = mObbPathToStateMap.get(filename);
}
UnmountObbAction action = new UnmountObbAction(obbState, force);
mObbActionHandler.sendMessage(mObbActionHandler.obtainMessage(OBB_RUN_ACTION, action));
if (DEBUG_OBB)
Slog.i(TAG, "Send to OBB handler: " + action.toString());
}
private void addObbState(ObbState obbState) {
synchronized (mObbMounts) {
List<ObbState> obbStates = mObbMounts.get(obbState.token);
if (obbStates == null) {
obbStates = new ArrayList<ObbState>();
mObbMounts.put(obbState.token, obbStates);
}
obbStates.add(obbState);
mObbPathToStateMap.put(obbState.filename, obbState);
}
}
private void removeObbState(ObbState obbState) {
synchronized (mObbMounts) {
final List<ObbState> obbStates = mObbMounts.get(obbState.token);
if (obbStates != null) {
obbStates.remove(obbState);
}
if (obbStates == null || obbStates.isEmpty()) {
mObbMounts.remove(obbState.token);
}
mObbPathToStateMap.remove(obbState.filename);
}
}
private class ObbActionHandler extends Handler {
private boolean mBound = false;
private List<ObbAction> mActions = new LinkedList<ObbAction>();
ObbActionHandler(Looper l) {
super(l);
}
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case OBB_RUN_ACTION: {
ObbAction action = (ObbAction) msg.obj;
if (DEBUG_OBB)
Slog.i(TAG, "OBB_RUN_ACTION: " + action.toString());
// If a bind was already initiated we don't really
// need to do anything. The pending install
// will be processed later on.
if (!mBound) {
// If this is the only one pending we might
// have to bind to the service again.
if (!connectToService()) {
Slog.e(TAG, "Failed to bind to media container service");
action.handleError();
return;
} else {
// Once we bind to the service, the first
// pending request will be processed.
mActions.add(action);
}
} else {
// Already bound to the service. Just make
// sure we trigger off processing the first request.
if (mActions.size() == 0) {
mObbActionHandler.sendEmptyMessage(OBB_MCS_BOUND);
}
mActions.add(action);
}
break;
}
case OBB_MCS_BOUND: {
if (DEBUG_OBB)
Slog.i(TAG, "OBB_MCS_BOUND");
if (msg.obj != null) {
mContainerService = (IMediaContainerService) msg.obj;
}
if (mContainerService == null) {
// Something seriously wrong. Bail out
Slog.e(TAG, "Cannot bind to media container service");
for (ObbAction action : mActions) {
// Indicate service bind error
action.handleError();
}
mActions.clear();
} else if (mActions.size() > 0) {
ObbAction action = mActions.get(0);
if (action != null) {
action.execute(this);
}
} else {
// Should never happen ideally.
Slog.w(TAG, "Empty queue");
}
break;
}
case OBB_MCS_RECONNECT: {
if (DEBUG_OBB)
Slog.i(TAG, "OBB_MCS_RECONNECT");
if (mActions.size() > 0) {
if (mBound) {
disconnectService();
}
if (!connectToService()) {
Slog.e(TAG, "Failed to bind to media container service");
for (ObbAction action : mActions) {
// Indicate service bind error
action.handleError();
}
mActions.clear();
}
}
break;
}
case OBB_MCS_UNBIND: {
if (DEBUG_OBB)
Slog.i(TAG, "OBB_MCS_UNBIND");
// Delete pending install
if (mActions.size() > 0) {
mActions.remove(0);
}
if (mActions.size() == 0) {
if (mBound) {
disconnectService();
}
} else {
// There are more pending requests in queue.
// Just post MCS_BOUND message to trigger processing
// of next pending install.
mObbActionHandler.sendEmptyMessage(OBB_MCS_BOUND);
}
break;
}
case OBB_MCS_GIVE_UP: {
if (DEBUG_OBB)
Slog.i(TAG, "OBB_MCS_GIVE_UP");
mActions.remove(0);
break;
}
}
}
private boolean connectToService() {
if (DEBUG_OBB)
Slog.i(TAG, "Trying to bind to DefaultContainerService");
Intent service = new Intent().setComponent(DEFAULT_CONTAINER_COMPONENT);
if (mContext.bindService(service, mDefContainerConn, Context.BIND_AUTO_CREATE)) {
mBound = true;
return true;
}
return false;
}
private void disconnectService() {
mContainerService = null;
mBound = false;
mContext.unbindService(mDefContainerConn);
}
}
abstract class ObbAction {
private static final int MAX_RETRIES = 3;
private int mRetries;
ObbState mObbState;
ObbAction(ObbState obbState) {
mObbState = obbState;
}
public void execute(ObbActionHandler handler) {
try {
if (DEBUG_OBB)
Slog.i(TAG, "Starting to execute action: " + this.toString());
mRetries++;
if (mRetries > MAX_RETRIES) {
Slog.w(TAG, "Failed to invoke remote methods on default container service. Giving up");
mObbActionHandler.sendEmptyMessage(OBB_MCS_GIVE_UP);
handleError();
return;
} else {
handleExecute();
if (DEBUG_OBB)
Slog.i(TAG, "Posting install MCS_UNBIND");
mObbActionHandler.sendEmptyMessage(OBB_MCS_UNBIND);
}
} catch (RemoteException e) {
if (DEBUG_OBB)
Slog.i(TAG, "Posting install MCS_RECONNECT");
mObbActionHandler.sendEmptyMessage(OBB_MCS_RECONNECT);
} catch (Exception e) {
if (DEBUG_OBB)
Slog.d(TAG, "Error handling OBB action", e);
handleError();
}
}
abstract void handleExecute() throws RemoteException, IOException;
abstract void handleError();
}
class MountObbAction extends ObbAction {
private String mKey;
MountObbAction(ObbState obbState, String key) {
super(obbState);
mKey = key;
}
public void handleExecute() throws RemoteException, IOException {
ObbInfo obbInfo = mContainerService.getObbInfo(mObbState.filename);
if (obbInfo == null) {
throw new IOException("Couldn't read OBB file");
}
if (!isUidOwnerOfPackageOrSystem(obbInfo.packageName, mObbState.callerUid)) {
throw new IllegalArgumentException("Caller package does not match OBB file");
}
if (mKey == null) {
mKey = "none";
}
int rc = StorageResultCode.OperationSucceeded;
String cmd = String.format("obb mount %s %s %d", mObbState.filename, mKey,
mObbState.callerUid);
try {
mConnector.doCommand(cmd);
} catch (NativeDaemonConnectorException e) {
int code = e.getCode();
if (code != VoldResponseCode.OpFailedStorageBusy) {
rc = StorageResultCode.OperationFailedInternalError;
}
}
if (rc == StorageResultCode.OperationSucceeded) {
try {
mObbState.token.onObbResult(mObbState.filename, Environment.MEDIA_MOUNTED);
} catch (RemoteException e) {
Slog.w(TAG, "MountServiceListener went away while calling onObbStateChanged");
}
} else {
Slog.e(TAG, "Couldn't mount OBB file: " + rc);
// We didn't succeed, so remove this from the mount-set.
removeObbState(mObbState);
mObbState.token.onObbResult(mObbState.filename, Environment.MEDIA_BAD_REMOVAL);
}
}
public void handleError() {
removeObbState(mObbState);
try {
mObbState.token.onObbResult(mObbState.filename, Environment.MEDIA_BAD_REMOVAL);
} catch (RemoteException e) {
Slog.e(TAG, "Couldn't send back OBB mount error for " + mObbState.filename);
}
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("MountObbAction{");
sb.append("filename=");
sb.append(mObbState.filename);
sb.append(",callerUid=");
sb.append(mObbState.callerUid);
sb.append(",token=");
sb.append(mObbState.token != null ? mObbState.token.toString() : "NULL");
sb.append('}');
return sb.toString();
}
}
class UnmountObbAction extends ObbAction {
private boolean mForceUnmount;
UnmountObbAction(ObbState obbState, boolean force) {
super(obbState);
mForceUnmount = force;
}
public void handleExecute() throws RemoteException, IOException {
ObbInfo obbInfo = mContainerService.getObbInfo(mObbState.filename);
if (obbInfo == null) {
throw new IOException("Couldn't read OBB file");
}
if (!isCallerOwnerOfPackageOrSystem(obbInfo.packageName)) {
throw new IllegalArgumentException("Caller package does not match OBB file");
}
int rc = StorageResultCode.OperationSucceeded;
String cmd = String.format("obb unmount %s%s", mObbState.filename,
(mForceUnmount ? " force" : ""));
try {
mConnector.doCommand(cmd);
} catch (NativeDaemonConnectorException e) {
int code = e.getCode();
if (code == VoldResponseCode.OpFailedStorageBusy) {
rc = StorageResultCode.OperationFailedStorageBusy;
} else {
rc = StorageResultCode.OperationFailedInternalError;
}
}
if (rc == StorageResultCode.OperationSucceeded) {
removeObbState(mObbState);
try {
mObbState.token.onObbResult(mObbState.filename, Environment.MEDIA_UNMOUNTED);
} catch (RemoteException e) {
Slog.w(TAG, "MountServiceListener went away while calling onObbStateChanged");
}
} else {
try {
mObbState.token.onObbResult(mObbState.filename, Environment.MEDIA_BAD_REMOVAL);
} catch (RemoteException e) {
Slog.w(TAG, "MountServiceListener went away while calling onObbStateChanged");
}
}
}
public void handleError() {
removeObbState(mObbState);
try {
mObbState.token.onObbResult(mObbState.filename, Environment.MEDIA_BAD_REMOVAL);
} catch (RemoteException e) {
Slog.e(TAG, "Couldn't send back OBB unmount error for " + mObbState.filename);
}
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("UnmountObbAction{");
sb.append("filename=");
sb.append(mObbState.filename != null ? mObbState.filename : "null");
sb.append(",force=");
sb.append(mForceUnmount);
sb.append(",callerUid=");
sb.append(mObbState.callerUid);
sb.append(",token=");
sb.append(mObbState.token != null ? mObbState.token.toString() : "null");
sb.append('}');
return sb.toString();
}
}
}
|