aboutsummaryrefslogtreecommitdiff
path: root/fs/cifs/cifspdu.h
blob: 49cc66825309eab46df4d0630e7730647a3417a1 (plain)
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
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
/*
 *   fs/cifs/cifspdu.h
 *
 *   Copyright (c) International Business Machines  Corp., 2002
 *   Author(s): Steve French (sfrench@us.ibm.com)
 *
 *   This library is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU Lesser General Public License as published
 *   by the Free Software Foundation; either version 2.1 of the License, or
 *   (at your option) any later version.
 *
 *   This library is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 *   the GNU Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public License
 *   along with this library; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 
 */

#ifndef _CIFSPDU_H
#define _CIFSPDU_H

#include <net/sock.h>

#define CIFS_PROT   0
#define BAD_PROT    CIFS_PROT+1

/* SMB command codes */
/* Some commands have minimal (wct=0,bcc=0), or uninteresting, responses
 (ie which include no useful data other than the SMB error code itself).
 Knowing this helps avoid response buffer allocations and copy in some cases */
#define SMB_COM_CREATE_DIRECTORY      0x00 /* trivial response */
#define SMB_COM_DELETE_DIRECTORY      0x01 /* trivial response */
#define SMB_COM_CLOSE                 0x04 /* triv req/rsp, timestamp ignored */
#define SMB_COM_DELETE                0x06 /* trivial response */
#define SMB_COM_RENAME                0x07 /* trivial response */
#define SMB_COM_SETATTR               0x09 /* trivial response */
#define SMB_COM_LOCKING_ANDX          0x24 /* trivial response */
#define SMB_COM_COPY                  0x29 /* trivial rsp, fail filename ignrd*/
#define SMB_COM_READ_ANDX             0x2E
#define SMB_COM_WRITE_ANDX            0x2F
#define SMB_COM_TRANSACTION2          0x32
#define SMB_COM_TRANSACTION2_SECONDARY 0x33
#define SMB_COM_FIND_CLOSE2           0x34 /* trivial response */
#define SMB_COM_TREE_DISCONNECT       0x71 /* trivial response */
#define SMB_COM_NEGOTIATE             0x72
#define SMB_COM_SESSION_SETUP_ANDX    0x73
#define SMB_COM_LOGOFF_ANDX           0x74 /* trivial response */
#define SMB_COM_TREE_CONNECT_ANDX     0x75
#define SMB_COM_NT_TRANSACT           0xA0
#define SMB_COM_NT_TRANSACT_SECONDARY 0xA1
#define SMB_COM_NT_CREATE_ANDX        0xA2
#define SMB_COM_NT_RENAME             0xA5 /* trivial response */

/* Transact2 subcommand codes */
#define TRANS2_OPEN                   0x00
#define TRANS2_FIND_FIRST             0x01
#define TRANS2_FIND_NEXT              0x02
#define TRANS2_QUERY_FS_INFORMATION   0x03
#define TRANS2_SET_FS_INFORMATION     0x04
#define TRANS2_QUERY_PATH_INFORMATION 0x05
#define TRANS2_SET_PATH_INFORMATION   0x06
#define TRANS2_QUERY_FILE_INFORMATION 0x07
#define TRANS2_SET_FILE_INFORMATION   0x08
#define TRANS2_GET_DFS_REFERRAL       0x10
#define TRANS2_REPORT_DFS_INCOSISTENCY 0x11

/* NT Transact subcommand codes */
#define NT_TRANSACT_CREATE            0x01
#define NT_TRANSACT_IOCTL             0x02
#define NT_TRANSACT_SET_SECURITY_DESC 0x03
#define NT_TRANSACT_NOTIFY_CHANGE     0x04
#define NT_TRANSACT_RENAME            0x05
#define NT_TRANSACT_QUERY_SECURITY_DESC 0x06
#define NT_TRANSACT_GET_USER_QUOTA    0x07
#define NT_TRANSACT_SET_USER_QUOTA    0x08

#define MAX_CIFS_HDR_SIZE 256	/* chained NTCreateXReadX will probably be biggest */

/* internal cifs vfs structures */
/*****************************************************************
 * All constants go here
 *****************************************************************
 */

/*
 * Starting value for maximum SMB size negotiation
 */
#define CIFS_MAX_MSGSIZE (4*4096)

/*
 * Size of encrypted user password in bytes
 */
#define CIFS_ENCPWD_SIZE (16)

/*
 * Size of the crypto key returned on the negotiate SMB in bytes
 */
#define CIFS_CRYPTO_KEY_SIZE (8)

/*
 * Size of the session key (crypto key encrypted with the password
 */
#define CIFS_SESSION_KEY_SIZE (24)

/*
 * Maximum user name length
 */
#define CIFS_UNLEN (20)

/*
 * Flags on SMB open
 */
#define SMBOPEN_WRITE_THROUGH 0x4000
#define SMBOPEN_DENY_ALL      0x0010
#define SMBOPEN_DENY_WRITE    0x0020
#define SMBOPEN_DENY_READ     0x0030
#define SMBOPEN_DENY_NONE     0x0040
#define SMBOPEN_READ          0x0000
#define SMBOPEN_WRITE         0x0001
#define SMBOPEN_READWRITE     0x0002
#define SMBOPEN_EXECUTE       0x0003

#define SMBOPEN_OCREATE       0x0010
#define SMBOPEN_OTRUNC        0x0002
#define SMBOPEN_OAPPEND       0x0001

/*
 * SMB flag definitions 
 */
#define SMBFLG_EXTD_LOCK 0x01	/* server supports lock-read write-unlock primitives */
#define SMBFLG_RCV_POSTED 0x02	/* obsolete */
#define SMBFLG_RSVD 0x04
#define SMBFLG_CASELESS 0x08	/* all pathnames treated as caseless (off implies case sensitive file handling requested) */
#define SMBFLG_CANONICAL_PATH_FORMAT 0x10	/* obsolete */
#define SMBFLG_OLD_OPLOCK 0x20	/* obsolete */
#define SMBFLG_OLD_OPLOCK_NOTIFY 0x40	/* obsolete */
#define SMBFLG_RESPONSE 0x80	/* this PDU is a response from server */

/*
 * SMB flag2 definitions 
 */
#define SMBFLG2_KNOWS_LONG_NAMES cpu_to_le16(1)	/* can send long (non-8.3) path names in response */
#define SMBFLG2_KNOWS_EAS cpu_to_le16(2)
#define SMBFLG2_SECURITY_SIGNATURE cpu_to_le16(4)
#define SMBFLG2_IS_LONG_NAME cpu_to_le16(0x40)
#define SMBFLG2_EXT_SEC cpu_to_le16(0x800)
#define SMBFLG2_DFS cpu_to_le16(0x1000)
#define SMBFLG2_PAGING_IO cpu_to_le16(0x2000)
#define SMBFLG2_ERR_STATUS cpu_to_le16(0x4000)
#define SMBFLG2_UNICODE cpu_to_le16(0x8000)

/*
 * These are the file access permission bits defined in CIFS for the
 * NTCreateAndX as well as the level 0x107
 * TRANS2_QUERY_PATH_INFORMATION API.  The level 0x107, SMB_QUERY_FILE_ALL_INFO
 * responds with the AccessFlags.
 * The AccessFlags specifies the access permissions a caller has to the
 * file and can have any suitable combination of the following values:
 */

#define FILE_READ_DATA        0x00000001	/* Data can be read from the file   */
#define FILE_WRITE_DATA       0x00000002	/* Data can be written to the file  */
#define FILE_APPEND_DATA      0x00000004	/* Data can be appended to the file */
#define FILE_READ_EA          0x00000008	/* Extended attributes associated   */
					 /* with the file can be read        */
#define FILE_WRITE_EA         0x00000010	/* Extended attributes associated   */
					 /* with the file can be written     */
#define FILE_EXECUTE          0x00000020	/*Data can be read into memory from */
					 /* the file using system paging I/O */
#define FILE_DELETE_CHILD     0x00000040
#define FILE_READ_ATTRIBUTES  0x00000080	/* Attributes associated with the   */
					 /* file can be read                 */
#define FILE_WRITE_ATTRIBUTES 0x00000100	/* Attributes associated with the   */
					 /* file can be written              */
#define DELETE                0x00010000	/* The file can be deleted          */
#define READ_CONTROL          0x00020000	/* The access control list and      */
					 /* ownership associated with the    */
					 /* file can be read                 */
#define WRITE_DAC             0x00040000	/* The access control list and      */
					 /* ownership associated with the    */
					 /* file can be written.             */
#define WRITE_OWNER           0x00080000	/* Ownership information associated */
					 /* with the file can be written     */
#define SYNCHRONIZE           0x00100000	/* The file handle can waited on to */
					 /* synchronize with the completion  */
					 /* of an input/output request       */
#define GENERIC_ALL           0x10000000
#define GENERIC_EXECUTE       0x20000000
#define GENERIC_WRITE         0x40000000
#define GENERIC_READ          0x80000000
					 /* In summary - Relevant file       */
					 /* access flags from CIFS are       */
					 /* file_read_data, file_write_data  */
					 /* file_execute, file_read_attributes */
					 /* write_dac, and delete.           */

/*
 * Invalid readdir handle
 */
#define CIFS_NO_HANDLE        0xFFFF

/* IPC$ in ASCII */
#define CIFS_IPC_RESOURCE "\x49\x50\x43\x24"

/* IPC$ in Unicode */
#define CIFS_IPC_UNICODE_RESOURCE "\x00\x49\x00\x50\x00\x43\x00\x24\x00\x00"

/* Unicode Null terminate 2 bytes of 0 */
#define UNICODE_NULL "\x00\x00"
#define ASCII_NULL 0x00

/*
 * Server type values (returned on EnumServer API
 */
#define CIFS_SV_TYPE_DC     0x00000008
#define CIFS_SV_TYPE_BACKDC 0x00000010

/*
 * Alias type flags (From EnumAlias API call
 */
#define CIFS_ALIAS_TYPE_FILE 0x0001
#define CIFS_SHARE_TYPE_FILE 0x0000

/*
 * File Attribute flags
 */
#define ATTR_READONLY  0x0001
#define ATTR_HIDDEN    0x0002
#define ATTR_SYSTEM    0x0004
#define ATTR_VOLUME    0x0008
#define ATTR_DIRECTORY 0x0010
#define ATTR_ARCHIVE   0x0020
#define ATTR_DEVICE    0x0040
#define ATTR_NORMAL    0x0080
#define ATTR_TEMPORARY 0x0100
#define ATTR_SPARSE    0x0200
#define ATTR_REPARSE   0x0400
#define ATTR_COMPRESSED 0x0800
#define ATTR_OFFLINE    0x1000	/* ie file not immediately available - offline storage */
#define ATTR_NOT_CONTENT_INDEXED 0x2000
#define ATTR_ENCRYPTED  0x4000
#define ATTR_POSIX_SEMANTICS 0x01000000
#define ATTR_BACKUP_SEMANTICS 0x02000000
#define ATTR_DELETE_ON_CLOSE 0x04000000
#define ATTR_SEQUENTIAL_SCAN 0x08000000
#define ATTR_RANDOM_ACCESS   0x10000000
#define ATTR_NO_BUFFERING    0x20000000
#define ATTR_WRITE_THROUGH   0x80000000

/* ShareAccess flags */
#define FILE_NO_SHARE     0x00000000
#define FILE_SHARE_READ   0x00000001
#define FILE_SHARE_WRITE  0x00000002
#define FILE_SHARE_DELETE 0x00000004
#define FILE_SHARE_ALL    0x00000007

/* CreateDisposition flags */
#define FILE_SUPERSEDE    0x00000000
#define FILE_OPEN         0x00000001
#define FILE_CREATE       0x00000002
#define FILE_OPEN_IF      0x00000003
#define FILE_OVERWRITE    0x00000004
#define FILE_OVERWRITE_IF 0x00000005

/* CreateOptions */
#define CREATE_NOT_FILE		0x00000001	/* if set must not be file */
#define CREATE_WRITE_THROUGH	0x00000002
#define CREATE_SEQUENTIAL       0x00000004
#define CREATE_SYNC_ALERT       0x00000010
#define CREATE_ASYNC_ALERT      0x00000020
#define CREATE_NOT_DIR		0x00000040    /* if set must not be directory */
#define CREATE_NO_EA_KNOWLEDGE  0x00000200
#define CREATE_EIGHT_DOT_THREE  0x00000400
#define CREATE_RANDOM_ACCESS	0x00000800
#define CREATE_DELETE_ON_CLOSE	0x00001000
#define CREATE_OPEN_BY_ID       0x00002000
#define OPEN_REPARSE_POINT	0x00200000
#define CREATE_OPTIONS_MASK     0x007FFFFF 
#define CREATE_OPTION_SPECIAL   0x20000000   /* system. NB not sent over wire */

/* ImpersonationLevel flags */
#define SECURITY_ANONYMOUS      0
#define SECURITY_IDENTIFICATION 1
#define SECURITY_IMPERSONATION  2
#define SECURITY_DELEGATION     3

/* SecurityFlags */
#define SECURITY_CONTEXT_TRACKING 0x01
#define SECURITY_EFFECTIVE_ONLY   0x02

/*
 * Default PID value, used in all SMBs where the PID is not important
 */
#define CIFS_DFT_PID  0x1234

/*
 * We use the same routine for Copy and Move SMBs.  This flag is used to
 * distinguish
 */
#define CIFS_COPY_OP 1
#define CIFS_RENAME_OP 2

#define GETU16(var)  (*((__u16 *)var))	/* BB check for endian issues */
#define GETU32(var)  (*((__u32 *)var))	/* BB check for endian issues */

#pragma pack(1)

struct smb_hdr {
	__u32 smb_buf_length;	/* big endian on wire *//* BB length is only two or three bytes - with one or two byte type preceding it but that is always zero - we could mask the type byte off just in case BB */
	__u8 Protocol[4];
	__u8 Command;
	union {
		struct {
			__u8 ErrorClass;
			__u8 Reserved;
			__le16 Error;
		} DosError;
		__le32 CifsError;
	} Status;
	__u8 Flags;
	__le16 Flags2;		/* note: le */
	__le16 PidHigh;
	union {
		struct {
			__le32 SequenceNumber;  /* le */
			__u32 Reserved; /* zero */
		} Sequence;
		__u8 SecuritySignature[8];	/* le */
	} Signature;
	__u8 pad[2];
	__u16 Tid;
	__le16 Pid;
	__u16 Uid;
	__u16 Mid;
	__u8 WordCount;
};
/* given a pointer to an smb_hdr retrieve the value of byte count */
#define BCC(smb_var) ( *(__u16 *)((char *)smb_var + sizeof(struct smb_hdr) + (2* smb_var->WordCount) ) )
#define BCC_LE(smb_var) ( *(__le16 *)((char *)smb_var + sizeof(struct smb_hdr) + (2* smb_var->WordCount) ) )
/* given a pointer to an smb_hdr retrieve the pointer to the byte area */
#define pByteArea(smb_var) ((unsigned char *)smb_var + sizeof(struct smb_hdr) + (2* smb_var->WordCount) + 2 )

/*
 * Computer Name Length
 */
#define CNLEN 15

/*
 * Share Name Length					  @S8A
 * Note:  This length is limited by the SMB used to get   @S8A
 *        the Share info.   NetShareEnum only returns 13  @S8A
 *        chars, including the null termination.          @S8A 
 */
#define SNLEN 12		/*@S8A */

/*
 * Comment Length
 */
#define MAXCOMMENTLEN 40

/*
 * The OS/2 maximum path name
 */
#define MAX_PATHCONF 256

/*
 *  SMB frame definitions  (following must be packed structs)
 *  See the SNIA CIFS Specification for details.
 *
 *  The Naming convention is the lower case version of the
 *  smb command code name for the struct and this is typedef to the
 *  uppercase version of the same name with the prefix SMB_ removed 
 *  for brevity.  Although typedefs are not commonly used for 
 *  structure definitions in the Linux kernel, their use in the
 *  CIFS standards document, which this code is based on, may
 *  make this one of the cases where typedefs for structures make
 *  sense to improve readability for readers of the standards doc.
 *  Typedefs can always be removed later if they are too distracting
 *  and they are only used for the CIFSs PDUs themselves, not
 *  internal cifs vfs structures
 *  
 */

typedef struct negotiate_req {
	struct smb_hdr hdr;	/* wct = 0 */
	__le16 ByteCount;
	unsigned char DialectsArray[1];
} NEGOTIATE_REQ;

typedef struct negotiate_rsp {
	struct smb_hdr hdr;	/* wct = 17 */
	__le16 DialectIndex;
	__u8 SecurityMode;
	__le16 MaxMpxCount;
	__le16 MaxNumberVcs;
	__le32 MaxBufferSize;
	__le32 MaxRawSize;
	__le32 SessionKey;
	__le32 Capabilities;	/* see below */
	__le32 SystemTimeLow;
	__le32 SystemTimeHigh;
	__le16 ServerTimeZone;
	__u8 EncryptionKeyLength;
	__u16 ByteCount;
	union {
		unsigned char EncryptionKey[1];	/* if cap extended security is off */
		/* followed by Domain name - if extended security is off */
		/* followed by 16 bytes of server GUID */
		/* followed by security blob if cap_extended_security negotiated */
		struct {
			unsigned char GUID[16];
			unsigned char SecurityBlob[1];
		} extended_response;
	} u;
} NEGOTIATE_RSP;

/* SecurityMode bits */
#define SECMODE_USER          0x01	/* off indicates share level security */
#define SECMODE_PW_ENCRYPT    0x02
#define SECMODE_SIGN_ENABLED  0x04	/* SMB security signatures enabled */
#define SECMODE_SIGN_REQUIRED 0x08	/* SMB security signatures required */

/* Negotiate response Capabilities */
#define CAP_RAW_MODE           0x00000001
#define CAP_MPX_MODE           0x00000002
#define CAP_UNICODE            0x00000004
#define CAP_LARGE_FILES        0x00000008
#define CAP_NT_SMBS            0x00000010	/* implies CAP_NT_FIND */
#define CAP_RPC_REMOTE_APIS    0x00000020
#define CAP_STATUS32           0x00000040
#define CAP_LEVEL_II_OPLOCKS   0x00000080
#define CAP_LOCK_AND_READ      0x00000100
#define CAP_NT_FIND            0x00000200
#define CAP_DFS                0x00001000
#define CAP_INFOLEVEL_PASSTHRU 0x00002000
#define CAP_LARGE_READ_X       0x00004000
#define CAP_LARGE_WRITE_X      0x00008000
#define CAP_UNIX               0x00800000
#define CAP_RESERVED           0x02000000
#define CAP_BULK_TRANSFER      0x20000000
#define CAP_COMPRESSED_DATA    0x40000000
#define CAP_EXTENDED_SECURITY  0x80000000

typedef union smb_com_session_setup_andx {
	struct {		/* request format */
		struct smb_hdr hdr;	/* wct = 12 */
		__u8 AndXCommand;
		__u8 AndXReserved;
		__le16 AndXOffset;
		__le16 MaxBufferSize;
		__le16 MaxMpxCount;
		__le16 VcNumber;
		__u32 SessionKey;
		__le16 SecurityBlobLength;
		__u32 Reserved;
		__le32 Capabilities;	/* see below */
		__le16 ByteCount;
		unsigned char SecurityBlob[1];	/* followed by */
		/* STRING NativeOS */
		/* STRING NativeLanMan */
	} req;			/* NTLM request format (with extended security */

	struct {		/* request format */
		struct smb_hdr hdr;	/* wct = 13 */
		__u8 AndXCommand;
		__u8 AndXReserved;
		__le16 AndXOffset;
		__le16 MaxBufferSize;
		__le16 MaxMpxCount;
		__le16 VcNumber;
		__u32 SessionKey;
		__le16 CaseInsensitivePasswordLength;	/* ASCII password length */
		__le16 CaseSensitivePasswordLength;	/* Unicode password length */
		__u32 Reserved;	/* see below */
		__le32 Capabilities;
		__le16 ByteCount;
		unsigned char CaseInsensitivePassword[1];	/* followed by: */
		/* unsigned char * CaseSensitivePassword; */
		/* STRING AccountName */
		/* STRING PrimaryDomain */
		/* STRING NativeOS */
		/* STRING NativeLanMan */
	} req_no_secext;	/* NTLM request format (without extended security */

	struct {		/* default (NTLM) response format */
		struct smb_hdr hdr;	/* wct = 4 */
		__u8 AndXCommand;
		__u8 AndXReserved;
		__le16 AndXOffset;
		__le16 Action;	/* see below */
		__le16 SecurityBlobLength;
		__u16 ByteCount;
		unsigned char SecurityBlob[1];	/* followed by */
/*      unsigned char  * NativeOS;      */
/*	unsigned char  * NativeLanMan;  */
/*      unsigned char  * PrimaryDomain; */
	} resp;			/* NTLM response format (with or without extended security */

	struct {		/* request format */
		struct smb_hdr hdr;	/* wct = 10 */
		__u8 AndXCommand;
		__u8 AndXReserved;
		__le16 AndXOffset;
		__le16 MaxBufferSize;
		__le16 MaxMpxCount;
		__le16 VcNumber;
		__u32 SessionKey;
		__le16 PassswordLength;
		__u32 Reserved;
		__le16 ByteCount;
		unsigned char AccountPassword[1];	/* followed by */
		/* STRING AccountName */
		/* STRING PrimaryDomain */
		/* STRING NativeOS */
		/* STRING NativeLanMan */
	} old_req;		/* pre-NTLM (LANMAN2.1) request format */

	struct {		/* default (NTLM) response format */
		struct smb_hdr hdr;	/* wct = 3 */
		__u8 AndXCommand;
		__u8 AndXReserved;
		__le16 AndXOffset;
		__le16 Action;	/* see below */
		__u16 ByteCount;
		unsigned char NativeOS[1];	/* followed by */
/*	unsigned char * NativeLanMan; */
/*      unsigned char * PrimaryDomain; */
	} old_resp;		/* pre-NTLM (LANMAN2.1) response format */
} SESSION_SETUP_ANDX;

#define CIFS_NETWORK_OPSYS "CIFS VFS Client for Linux"

/* Capabilities bits (for NTLM SessSetup request) */
#define CAP_UNICODE            0x00000004
#define CAP_LARGE_FILES        0x00000008
#define CAP_NT_SMBS            0x00000010
#define CAP_STATUS32           0x00000040
#define CAP_LEVEL_II_OPLOCKS   0x00000080
#define CAP_NT_FIND            0x00000200	/* reserved should be zero (presumably because NT_SMBs implies the same thing) */
#define CAP_BULK_TRANSFER      0x20000000
#define CAP_EXTENDED_SECURITY  0x80000000

/* Action bits */
#define GUEST_LOGIN 1

typedef struct smb_com_tconx_req {
	struct smb_hdr hdr;	/* wct = 4 */
	__u8 AndXCommand;
	__u8 AndXReserved;
	__le16 AndXOffset;
	__le16 Flags;		/* see below */
	__le16 PasswordLength;
	__le16 ByteCount;
	unsigned char Password[1];	/* followed by */
/* STRING Path    *//* \\server\share name */
	/* STRING Service */
} TCONX_REQ;

typedef struct smb_com_tconx_rsp {
	struct smb_hdr hdr;	/* wct = 3 *//* note that Win2000 has sent wct=7 in some cases on responses. Four unspecified words followed OptionalSupport */
	__u8 AndXCommand;
	__u8 AndXReserved;
	__le16 AndXOffset;
	__le16 OptionalSupport;	/* see below */
	__u16 ByteCount;
	unsigned char Service[1];	/* always ASCII, not Unicode */
	/* STRING NativeFileSystem */
} TCONX_RSP;

/* tree connect Flags */
#define DISCONNECT_TID          0x0001
#define TCON_EXTENDED_SECINFO   0x0008
/* OptionalSupport bits */
#define SMB_SUPPORT_SEARCH_BITS 0x0001	/* must have bits (exclusive searches suppt. */
#define SMB_SHARE_IS_IN_DFS     0x0002

typedef struct smb_com_logoff_andx_req {
	struct smb_hdr hdr;	/* wct = 2 */
	__u8 AndXCommand;
	__u8 AndXReserved;
	__u16 AndXOffset;
	__u16 ByteCount;
} LOGOFF_ANDX_REQ;

typedef struct smb_com_logoff_andx_rsp {
	struct smb_hdr hdr;	/* wct = 2 */
	__u8 AndXCommand;
	__u8 AndXReserved;
	__u16 AndXOffset;
	__u16 ByteCount;
} LOGOFF_ANDX_RSP;

typedef union smb_com_tree_disconnect {	/* as an altetnative can use flag on tree_connect PDU to effect disconnect *//* probably the simplest SMB PDU */
	struct {
		struct smb_hdr hdr;	/* wct = 0 */
		__u16 ByteCount;	/* bcc = 0 */
	} req;
	struct {
		struct smb_hdr hdr;	/* wct = 0 */
		__u16 ByteCount;	/* bcc = 0 */
	} resp;
} TREE_DISCONNECT;

typedef struct smb_com_close_req {
	struct smb_hdr hdr;	/* wct = 3 */
	__u16 FileID;
	__u32 LastWriteTime;	/* should be zero */
	__u16 ByteCount;	/* 0 */
} CLOSE_REQ;

typedef struct smb_com_close_rsp {
	struct smb_hdr hdr;	/* wct = 0 */
	__u16 ByteCount;	/* bct = 0 */
} CLOSE_RSP;

typedef struct smb_com_findclose_req {
	struct smb_hdr hdr; /* wct = 1 */
	__u16 FileID;
	__u16 ByteCount;    /* 0 */
} FINDCLOSE_REQ;

/* OpenFlags */
#define REQ_OPLOCK         0x00000002
#define REQ_BATCHOPLOCK    0x00000004
#define REQ_OPENDIRONLY    0x00000008

typedef struct smb_com_open_req {	/* also handles create */
	struct smb_hdr hdr;	/* wct = 24 */
	__u8 AndXCommand;
	__u8 AndXReserved;
	__le16 AndXOffset;
	__u8 Reserved;		/* Must Be Zero */
	__le16 NameLength;
	__le32 OpenFlags;
	__le32 RootDirectoryFid;
	__le32 DesiredAccess;
	__le64 AllocationSize;
	__le32 FileAttributes;
	__le32 ShareAccess;
	__le32 CreateDisposition;
	__le32 CreateOptions;
	__le32 ImpersonationLevel;
	__u8 SecurityFlags;
	__le16 ByteCount;
	char fileName[1];
} OPEN_REQ;

/* open response: oplock levels */
#define OPLOCK_NONE  	 0
#define OPLOCK_EXCLUSIVE 1
#define OPLOCK_BATCH	 2
#define OPLOCK_READ	 3  /* level 2 oplock */

/* open response for CreateAction shifted left */
#define CIFS_CREATE_ACTION 0x20000 /* file created */

typedef struct smb_com_open_rsp {
	struct smb_hdr hdr;	/* wct = 34 BB */
	__u8 AndXCommand;
	__u8 AndXReserved;
	__le16 AndXOffset;
	__u8 OplockLevel;
	__u16 Fid;
	__le32 CreateAction;
	__le64 CreationTime;
	__le64 LastAccessTime;
	__le64 LastWriteTime;
	__le64 ChangeTime;
	__le32 FileAttributes;
	__le64 AllocationSize;
	__le64 EndOfFile;
	__le16 FileType;
	__le16 DeviceState;
	__u8 DirectoryFlag;
	__u16 ByteCount;	/* bct = 0 */
} OPEN_RSP;

typedef struct smb_com_write_req {
	struct smb_hdr hdr;	/* wct = 14 */
	__u8 AndXCommand;
	__u8 AndXReserved;
	__le16 AndXOffset;
	__u16 Fid;
	__le32 OffsetLow;
	__u32 Reserved;
	__le16 WriteMode;
	__le16 Remaining;
	__le16 DataLengthHigh;
	__le16 DataLengthLow;
	__le16 DataOffset;
	__le32 OffsetHigh;
	__le16 ByteCount;
	__u8 Pad;		/* BB check for whether padded to DWORD boundary and optimum performance here */
	char Data[0];
} WRITE_REQ;

typedef struct smb_com_write_rsp {
	struct smb_hdr hdr;	/* wct = 6 */
	__u8 AndXCommand;
	__u8 AndXReserved;
	__le16 AndXOffset;
	__le16 Count;
	__le16 Remaining;
	__le16 CountHigh;
	__u16  Reserved;
	__u16 ByteCount;
} WRITE_RSP;

typedef struct smb_com_read_req {
	struct smb_hdr hdr;	/* wct = 12 */
	__u8 AndXCommand;
	__u8 AndXReserved;
	__le16 AndXOffset;
	__u16 Fid;
	__le32 OffsetLow;
	__le16 MaxCount;
	__le16 MinCount;		/* obsolete */
	__le32 MaxCountHigh;
	__le16 Remaining;
	__le32 OffsetHigh;
	__le16 ByteCount;
} READ_REQ;

typedef struct smb_com_read_rsp {
	struct smb_hdr hdr;	/* wct = 12 */
	__u8 AndXCommand;
	__u8 AndXReserved;
	__le16 AndXOffset;
	__le16 Remaining;
	__le16 DataCompactionMode;
	__le16 Reserved;
	__le16 DataLength;
	__le16 DataOffset;
	__le16 DataLengthHigh;
	__u64 Reserved2;
	__u16 ByteCount;
	__u8 Pad;		/* BB check for whether padded to DWORD boundary and optimum performance here */
	char Data[1];
} READ_RSP;

typedef struct locking_andx_range {
	__le16 Pid;
	__le16 Pad;
	__le32 OffsetHigh;
	__le32 OffsetLow;
	__le32 LengthHigh;
	__le32 LengthLow;
} LOCKING_ANDX_RANGE;

#define LOCKING_ANDX_SHARED_LOCK     0x01
#define LOCKING_ANDX_OPLOCK_RELEASE  0x02
#define LOCKING_ANDX_CHANGE_LOCKTYPE 0x04
#define LOCKING_ANDX_CANCEL_LOCK     0x08
#define LOCKING_ANDX_LARGE_FILES     0x10	/* always on for us */

typedef struct smb_com_lock_req {
	struct smb_hdr hdr;	/* wct = 8 */
	__u8 AndXCommand;
	__u8 AndXReserved;
	__le16 AndXOffset;
	__u16 Fid;
	__u8 LockType;
	__u8 OplockLevel;
	__le32 Timeout;
	__le16 NumberOfUnlocks;
	__le16 NumberOfLocks;
	__le16 ByteCount;
	LOCKING_ANDX_RANGE Locks[1];
} LOCK_REQ;


typedef struct cifs_posix_lock {
	__le16  lock_type;  /* 0 = Read, 1 = Write, 2 = Unlock */
	__le16  lock_flags; /* 1 = Wait (only valid for setlock) */
	__le32  pid;
	__le64	start;
	__le64	length;
	/* BB what about additional owner info to identify network client */
} CIFS_POSIX_LOCK;

typedef struct smb_com_lock_rsp {
	struct smb_hdr hdr;	/* wct = 2 */
	__u8 AndXCommand;
	__u8 AndXReserved;
	__le16 AndXOffset;
	__u16 ByteCount;
} LOCK_RSP;

typedef struct smb_com_rename_req {
	struct smb_hdr hdr;	/* wct = 1 */
	__le16 SearchAttributes;	/* target file attributes */
	__le16 ByteCount;
	__u8 BufferFormat;	/* 4 = ASCII or Unicode */
	unsigned char OldFileName[1];
	/* followed by __u8 BufferFormat2 */
	/* followed by NewFileName */
} RENAME_REQ;

	/* copy request flags */
#define COPY_MUST_BE_FILE      0x0001
#define COPY_MUST_BE_DIR       0x0002
#define COPY_TARGET_MODE_ASCII 0x0004 /* if not set, binary */
#define COPY_SOURCE_MODE_ASCII 0x0008 /* if not set, binary */
#define COPY_VERIFY_WRITES     0x0010
#define COPY_TREE              0x0020 

typedef struct smb_com_copy_req {
	struct smb_hdr hdr;	/* wct = 3 */
	__u16 Tid2;
	__le16 OpenFunction;
	__le16 Flags;
	__le16 ByteCount;
	__u8 BufferFormat;	/* 4 = ASCII or Unicode */ 
	unsigned char OldFileName[1];
	/* followed by __u8 BufferFormat2 */
	/* followed by NewFileName string */
} COPY_REQ;

typedef struct smb_com_copy_rsp {
	struct smb_hdr hdr;     /* wct = 1 */
	__le16 CopyCount;    /* number of files copied */
	__u16 ByteCount;    /* may be zero */
	__u8 BufferFormat;  /* 0x04 - only present if errored file follows */
	unsigned char ErrorFileName[1]; /* only present if error in copy */
} COPY_RSP;

#define CREATE_HARD_LINK		0x103
#define MOVEFILE_COPY_ALLOWED		0x0002
#define MOVEFILE_REPLACE_EXISTING	0x0001

typedef struct smb_com_nt_rename_req {	/* A5 - also used for create hardlink */
	struct smb_hdr hdr;	/* wct = 4 */
	__le16 SearchAttributes;	/* target file attributes */
	__le16 Flags;		/* spec says Information Level */
	__le32 ClusterCount;
	__le16 ByteCount;
	__u8 BufferFormat;	/* 4 = ASCII or Unicode */
	unsigned char OldFileName[1];
	/* followed by __u8 BufferFormat2 */
	/* followed by NewFileName */
} NT_RENAME_REQ;

typedef struct smb_com_rename_rsp {
	struct smb_hdr hdr;	/* wct = 0 */
	__u16 ByteCount;	/* bct = 0 */
} RENAME_RSP;

typedef struct smb_com_delete_file_req {
	struct smb_hdr hdr;	/* wct = 1 */
	__le16 SearchAttributes;
	__le16 ByteCount;
	__u8 BufferFormat;	/* 4 = ASCII */
	unsigned char fileName[1];
} DELETE_FILE_REQ;

typedef struct smb_com_delete_file_rsp {
	struct smb_hdr hdr;	/* wct = 0 */
	__u16 ByteCount;	/* bct = 0 */
} DELETE_FILE_RSP;

typedef struct smb_com_delete_directory_req {
	struct smb_hdr hdr;	/* wct = 0 */
	__le16 ByteCount;
	__u8 BufferFormat;	/* 4 = ASCII */
	unsigned char DirName[1];
} DELETE_DIRECTORY_REQ;

typedef struct smb_com_delete_directory_rsp {
	struct smb_hdr hdr;	/* wct = 0 */
	__u16 ByteCount;	/* bct = 0 */
} DELETE_DIRECTORY_RSP;

typedef struct smb_com_create_directory_req {
	struct smb_hdr hdr;	/* wct = 0 */
	__le16 ByteCount;
	__u8 BufferFormat;	/* 4 = ASCII */
	unsigned char DirName[1];
} CREATE_DIRECTORY_REQ;

typedef struct smb_com_create_directory_rsp {
	struct smb_hdr hdr;	/* wct = 0 */
	__u16 ByteCount;	/* bct = 0 */
} CREATE_DIRECTORY_RSP;

typedef struct smb_com_setattr_req {
	struct smb_hdr hdr; /* wct = 8 */
	__le16 attr;
	__le16 time_low;
	__le16 time_high;
	__le16 reserved[5]; /* must be zero */
	__u16  ByteCount;
	__u8   BufferFormat; /* 4 = ASCII */
	unsigned char fileName[1];
} SETATTR_REQ;

typedef struct smb_com_setattr_rsp {
	struct smb_hdr hdr;     /* wct = 0 */
	__u16 ByteCount;        /* bct = 0 */
} SETATTR_RSP;

/* empty wct response to setattr */

/***************************************************/
/* NT Transact structure defintions follow         */
/* Currently only ioctl and notify are implemented */
/***************************************************/
typedef struct smb_com_transaction_ioctl_req {
	struct smb_hdr hdr;	/* wct = 23 */
	__u8 MaxSetupCount;
	__u16 Reserved;
	__le32 TotalParameterCount;
	__le32 TotalDataCount;
	__le32 MaxParameterCount;
	__le32 MaxDataCount;
	__le32 ParameterCount;
	__le32 ParameterOffset;
	__le32 DataCount;
	__le32 DataOffset;
	__u8 SetupCount; /* four setup words follow subcommand */
	/* SNIA spec incorrectly included spurious pad here */
	__le16 SubCommand;/* 2 = IOCTL/FSCTL */
	__le32 FunctionCode;
	__u16 Fid;
	__u8 IsFsctl;    /* 1 = File System Control, 0 = device control (IOCTL)*/
	__u8 IsRootFlag; /* 1 = apply command to root of share (must be DFS share)*/
	__le16 ByteCount;
	__u8 Pad[3];
	__u8 Data[1];
} TRANSACT_IOCTL_REQ;

typedef struct smb_com_transaction_ioctl_rsp {
	struct smb_hdr hdr;	/* wct = 19 */
	__u8 Reserved[3];
	__le32 TotalParameterCount;
	__le32 TotalDataCount;
	__le32 ParameterCount;
	__le32 ParameterOffset;
	__le32 ParameterDisplacement;
	__le32 DataCount;
	__le32 DataOffset;
	__le32 DataDisplacement;
	__u8 SetupCount;	/* 1 */
	__le16 ReturnedDataLen;
	__u16 ByteCount;
	__u8 Pad[3];
} TRANSACT_IOCTL_RSP;

typedef struct smb_com_transaction_change_notify_req {
	struct smb_hdr hdr;     /* wct = 23 */
	__u8 MaxSetupCount;
	__u16 Reserved;
	__le32 TotalParameterCount;
	__le32 TotalDataCount;
	__le32 MaxParameterCount;
	__le32 MaxDataCount;
	__le32 ParameterCount;
	__le32 ParameterOffset;
	__le32 DataCount;
	__le32 DataOffset;
	__u8 SetupCount; /* four setup words follow subcommand */
	/* SNIA spec incorrectly included spurious pad here */
	__le16 SubCommand;/* 4 = Change Notify */
	__le32 CompletionFilter;  /* operation to monitor */
	__u16 Fid;
	__u8 WatchTree;  /* 1 = Monitor subdirectories */
	__u8 Reserved2;
	__le16 ByteCount;
/* __u8 Pad[3];*/
/*	__u8 Data[1];*/
} TRANSACT_CHANGE_NOTIFY_REQ;

typedef struct smb_com_transaction_change_notify_rsp {
	struct smb_hdr hdr;	/* wct = 18 */
	__u8 Reserved[3];
	__le32 TotalParameterCount;
	__le32 TotalDataCount;
	__le32 ParameterCount;
	__le32 ParameterOffset;
	__le32 ParameterDisplacement;
	__le32 DataCount;
	__le32 DataOffset;
	__le32 DataDisplacement;
	__u8 SetupCount;   /* 0 */
	__u16 ByteCount;
	/* __u8 Pad[3]; */
} TRANSACT_CHANGE_NOTIFY_RSP;
/* Completion Filter flags for Notify */
#define FILE_NOTIFY_CHANGE_FILE_NAME    0x00000001
#define FILE_NOTIFY_CHANGE_DIR_NAME     0x00000002
#define FILE_NOTIFY_CHANGE_NAME         0x00000003
#define FILE_NOTIFY_CHANGE_ATTRIBUTES   0x00000004
#define FILE_NOTIFY_CHANGE_SIZE         0x00000008
#define FILE_NOTIFY_CHANGE_LAST_WRITE   0x00000010
#define FILE_NOTIFY_CHANGE_LAST_ACCESS  0x00000020
#define FILE_NOTIFY_CHANGE_CREATION     0x00000040
#define FILE_NOTIFY_CHANGE_EA           0x00000080
#define FILE_NOTIFY_CHANGE_SECURITY     0x00000100
#define FILE_NOTIFY_CHANGE_STREAM_NAME  0x00000200
#define FILE_NOTIFY_CHANGE_STREAM_SIZE  0x00000400
#define FILE_NOTIFY_CHANGE_STREAM_WRITE 0x00000800

#define FILE_ACTION_ADDED		0x00000001
#define FILE_ACTION_REMOVED		0x00000002
#define FILE_ACTION_MODIFIED		0x00000003
#define FILE_ACTION_RENAMED_OLD_NAME	0x00000004
#define FILE_ACTION_RENAMED_NEW_NAME	0x00000005
#define FILE_ACTION_ADDED_STREAM	0x00000006
#define FILE_ACTION_REMOVED_STREAM	0x00000007
#define FILE_ACTION_MODIFIED_STREAM	0x00000008

/* response contains array of the following structures */
struct file_notify_information {
	__le32 NextEntryOffset;
	__le32 Action;
	__le32 FileNameLength;
	__u8  FileName[0];
}; 

struct reparse_data {
	__u32	ReparseTag;
	__u16	ReparseDataLength;
	__u16	Reserved;
	__u16	AltNameOffset;
	__u16	AltNameLen;
	__u16	TargetNameOffset;
	__u16	TargetNameLen;
	char	LinkNamesBuf[1];
};

struct cifs_quota_data {
	__u32	rsrvd1;  /* 0 */
	__u32	sid_size;
	__u64	rsrvd2;  /* 0 */
	__u64	space_used;
	__u64	soft_limit;
	__u64	hard_limit;
	char	sid[1];  /* variable size? */
};

/* quota sub commands */
#define QUOTA_LIST_CONTINUE	    0
#define QUOTA_LIST_START	0x100
#define QUOTA_FOR_SID		0x101

struct trans2_req {
	/* struct smb_hdr hdr precedes. Set wct = 14+ */
	__le16 TotalParameterCount;
	__le16 TotalDataCount;
	__le16 MaxParameterCount;
	__le16 MaxDataCount;
	__u8 MaxSetupCount;
	__u8 Reserved;
	__le16 Flags;
	__le32 Timeout;
	__u16 Reserved2;
	__le16 ParameterCount;
	__le16 ParameterOffset;
	__le16 DataCount;
	__le16 DataOffset;
	__u8 SetupCount;
	__u8 Reserved3;
	__le16 SubCommand; /* 1st setup word - SetupCount words follow */
	__le16 ByteCount;
};

struct smb_t2_req {
	struct smb_hdr hdr;
	struct trans2_req t2_req;
};

struct trans2_resp {
	/* struct smb_hdr hdr precedes. Note wct = 10 + setup count */
	__le16 TotalParameterCount;
	__le16 TotalDataCount;
	__u16 Reserved;
	__le16 ParameterCount;
	__le16 ParameterOffset;
	__le16 ParameterDisplacement;
	__le16 DataCount;
	__le16 DataOffset;
	__le16 DataDisplacement;
	__u8 SetupCount;
	__u8 Reserved1;
	/* SetupWords[SetupCount];
	__u16 ByteCount;
	__u16 Reserved2;*/	
	/* data area follows */
};

struct smb_t2_rsp {
	struct smb_hdr hdr;
	struct trans2_resp t2_rsp;
};

/* PathInfo/FileInfo infolevels */
#define SMB_INFO_STANDARD                   1
#define SMB_SET_FILE_EA                     2
#define SMB_QUERY_FILE_EA_SIZE              2
#define SMB_INFO_QUERY_EAS_FROM_LIST        3
#define SMB_INFO_QUERY_ALL_EAS              4
#define SMB_INFO_IS_NAME_VALID              6
#define SMB_QUERY_FILE_BASIC_INFO       0x101
#define SMB_QUERY_FILE_STANDARD_INFO    0x102
#define SMB_QUERY_FILE_EA_INFO          0x103
#define SMB_QUERY_FILE_NAME_INFO        0x104
#define SMB_QUERY_FILE_ALLOCATION_INFO  0x105
#define SMB_QUERY_FILE_END_OF_FILEINFO  0x106
#define SMB_QUERY_FILE_ALL_INFO         0x107
#define SMB_QUERY_ALT_NAME_INFO         0x108
#define SMB_QUERY_FILE_STREAM_INFO      0x109
#define SMB_QUERY_FILE_COMPRESSION_INFO 0x10B
#define SMB_QUERY_FILE_UNIX_BASIC       0x200
#define SMB_QUERY_FILE_UNIX_LINK        0x201
#define SMB_QUERY_POSIX_ACL             0x204
#define SMB_QUERY_XATTR                 0x205
#define SMB_QUERY_ATTR_FLAGS            0x206  /* append,immutable etc. */
#define SMB_QUERY_POSIX_PERMISSION      0x207
#define SMB_QUERY_POSIX_LOCK            0x208
#define SMB_QUERY_FILE_INTERNAL_INFO    0x3ee
#define SMB_QUERY_FILE_ACCESS_INFO      0x3f0
#define SMB_QUERY_FILE_NAME_INFO2       0x3f1 /* 0x30 bytes */
#define SMB_QUERY_FILE_POSITION_INFO    0x3f6 
#define SMB_QUERY_FILE_MODE_INFO        0x3f8
#define SMB_QUERY_FILE_ALGN_INFO        0x3f9 


#define SMB_SET_FILE_BASIC_INFO	        0x101
#define SMB_SET_FILE_DISPOSITION_INFO   0x102
#define SMB_SET_FILE_ALLOCATION_INFO    0x103
#define SMB_SET_FILE_END_OF_FILE_INFO   0x104
#define SMB_SET_FILE_UNIX_BASIC         0x200
#define SMB_SET_FILE_UNIX_LINK          0x201
#define SMB_SET_FILE_UNIX_HLINK         0x203
#define SMB_SET_POSIX_ACL               0x204
#define SMB_SET_XATTR                   0x205
#define SMB_SET_ATTR_FLAGS              0x206  /* append, immutable etc. */
#define SMB_SET_POSIX_LOCK              0x208
#define SMB_SET_FILE_BASIC_INFO2        0x3ec
#define SMB_SET_FILE_RENAME_INFORMATION 0x3f2 /* BB check if qpathinfo level too */
#define SMB_FILE_ALL_INFO2              0x3fa
#define SMB_SET_FILE_ALLOCATION_INFO2   0x3fb
#define SMB_SET_FILE_END_OF_FILE_INFO2  0x3fc
#define SMB_FILE_MOVE_CLUSTER_INFO      0x407
#define SMB_FILE_QUOTA_INFO             0x408
#define SMB_FILE_REPARSEPOINT_INFO      0x409
#define SMB_FILE_MAXIMUM_INFO           0x40d

/* Find File infolevels */
#define SMB_FIND_FILE_DIRECTORY_INFO      0x101
#define SMB_FIND_FILE_FULL_DIRECTORY_INFO 0x102
#define SMB_FIND_FILE_NAMES_INFO          0x103
#define SMB_FIND_FILE_BOTH_DIRECTORY_INFO 0x104
#define SMB_FIND_FILE_ID_FULL_DIR_INFO    0x105
#define SMB_FIND_FILE_ID_BOTH_DIR_INFO    0x106
#define SMB_FIND_FILE_UNIX                0x202

typedef struct smb_com_transaction2_qpi_req {
	struct smb_hdr hdr;	/* wct = 14+ */
	__le16 TotalParameterCount;
	__le16 TotalDataCount;
	__le16 MaxParameterCount;
	__le16 MaxDataCount;
	__u8 MaxSetupCount;
	__u8 Reserved;
	__le16 Flags;
	__le32 Timeout;
	__u16 Reserved2;
	__le16 ParameterCount;
	__le16 ParameterOffset;
	__le16 DataCount;
	__le16 DataOffset;
	__u8 SetupCount;
	__u8 Reserved3;
	__le16 SubCommand;	/* one setup word */
	__le16 ByteCount;
	__u8 Pad;
	__le16 InformationLevel;
	__u32 Reserved4;
	char FileName[1];
} TRANSACTION2_QPI_REQ;

typedef struct smb_com_transaction2_qpi_rsp {
	struct smb_hdr hdr;	/* wct = 10 + SetupCount */
	struct trans2_resp t2;
	__u16 ByteCount;
	__u16 Reserved2;	/* parameter word reserved - present for infolevels > 100 */
} TRANSACTION2_QPI_RSP;

typedef struct smb_com_transaction2_spi_req {
	struct smb_hdr hdr;	/* wct = 15 */
	__le16 TotalParameterCount;
	__le16 TotalDataCount;
	__le16 MaxParameterCount;
	__le16 MaxDataCount;
	__u8 MaxSetupCount;
	__u8 Reserved;
	__le16 Flags;
	__le32 Timeout;
	__u16 Reserved2;
	__le16 ParameterCount;
	__le16 ParameterOffset;
	__le16 DataCount;
	__le16 DataOffset;
	__u8 SetupCount;
	__u8 Reserved3;
	__le16 SubCommand;	/* one setup word */
	__le16 ByteCount;
	__u8 Pad;
	__u16 Pad1;
	__le16 InformationLevel;
	__u32 Reserved4;
	char FileName[1];
} TRANSACTION2_SPI_REQ;

typedef struct smb_com_transaction2_spi_rsp {
	struct smb_hdr hdr;	/* wct = 10 + SetupCount */
	struct trans2_resp t2;
	__u16 ByteCount;
	__u16 Reserved2;	/* parameter word reserved - present for infolevels > 100 */
} TRANSACTION2_SPI_RSP;

struct set_file_rename {
	__le32 overwrite;   /* 1 = overwrite dest */
	__u32 root_fid;   /* zero */
	__le32 target_name_len;
	char  target_name[0];  /* Must be unicode */
};

struct smb_com_transaction2_sfi_req {
	struct smb_hdr hdr;	/* wct = 15 */
	__le16 TotalParameterCount;
	__le16 TotalDataCount;
	__le16 MaxParameterCount;
	__le16 MaxDataCount;
	__u8 MaxSetupCount;
	__u8 Reserved;
	__le16 Flags;
	__le32 Timeout;
	__u16 Reserved2;
	__le16 ParameterCount;
	__le16 ParameterOffset;
	__le16 DataCount;
	__le16 DataOffset;
	__u8 SetupCount;
	__u8 Reserved3;
	__le16 SubCommand;	/* one setup word */
	__le16 ByteCount;
	__u8 Pad;
	__u16 Pad1;
	__u16 Fid;
	__le16 InformationLevel;
	__u16 Reserved4;	
};

struct smb_com_transaction2_sfi_rsp {
	struct smb_hdr hdr;	/* wct = 10 + SetupCount */
	struct trans2_resp t2;
	__u16 ByteCount;
	__u16 Reserved2;	/* parameter word reserved - 
					present for infolevels > 100 */
};

struct smb_t2_qfi_req {
        struct	smb_hdr hdr;
        struct	trans2_req t2;
	__u8	Pad;
	__u16	Fid;
	__le16	InformationLevel;
};

struct smb_t2_qfi_rsp {
        struct smb_hdr hdr;     /* wct = 10 + SetupCount */
        struct trans2_resp t2;
        __u16 ByteCount;
        __u16 Reserved2;        /* parameter word reserved - 
					present for infolevels > 100 */
};

/*
 * Flags on T2 FINDFIRST and FINDNEXT 
 */
#define CIFS_SEARCH_CLOSE_ALWAYS  0x0001
#define CIFS_SEARCH_CLOSE_AT_END  0x0002
#define CIFS_SEARCH_RETURN_RESUME 0x0004
#define CIFS_SEARCH_CONTINUE_FROM_LAST 0x0008
#define CIFS_SEARCH_BACKUP_SEARCH 0x0010

/*
 * Size of the resume key on FINDFIRST and FINDNEXT calls
 */
#define CIFS_SMB_RESUME_KEY_SIZE 4

typedef struct smb_com_transaction2_ffirst_req {
	struct smb_hdr hdr;	/* wct = 15 */
	__le16 TotalParameterCount;
	__le16 TotalDataCount;
	__le16 MaxParameterCount;
	__le16 MaxDataCount;
	__u8 MaxSetupCount;
	__u8 Reserved;
	__le16 Flags;
	__le32 Timeout;
	__u16 Reserved2;
	__le16 ParameterCount;
	__le16 ParameterOffset;
	__le16 DataCount;
	__le16 DataOffset;
	__u8 SetupCount;	/* one */
	__u8 Reserved3;
	__le16 SubCommand;	/* TRANS2_FIND_FIRST */
	__le16 ByteCount;
	__u8 Pad;
	__le16 SearchAttributes;
	__le16 SearchCount;
	__le16 SearchFlags;
	__le16 InformationLevel;
	__le32 SearchStorageType;
	char FileName[1];
} TRANSACTION2_FFIRST_REQ;

typedef struct smb_com_transaction2_ffirst_rsp {
	struct smb_hdr hdr;	/* wct = 10 */
	struct trans2_resp t2;
	__u16 ByteCount;
} TRANSACTION2_FFIRST_RSP;

typedef struct smb_com_transaction2_ffirst_rsp_parms {
	__u16 SearchHandle;
	__le16 SearchCount;
	__le16 EndofSearch;
	__le16 EAErrorOffset;
	__le16 LastNameOffset;
} T2_FFIRST_RSP_PARMS;

typedef struct smb_com_transaction2_fnext_req {
	struct smb_hdr hdr;	/* wct = 15 */
	__le16 TotalParameterCount;
	__le16 TotalDataCount;
	__le16 MaxParameterCount;
	__le16 MaxDataCount;
	__u8 MaxSetupCount;
	__u8 Reserved;
	__le16 Flags;
	__le32 Timeout;
	__u16 Reserved2;
	__le16 ParameterCount;
	__le16 ParameterOffset;
	__le16 DataCount;
	__le16 DataOffset;
	__u8 SetupCount;	/* one */
	__u8 Reserved3;
	__le16 SubCommand;	/* TRANS2_FIND_NEXT */
	__le16 ByteCount;
	__u8 Pad;
	__u16 SearchHandle;
	__le16 SearchCount;
	__le16 InformationLevel;
	__u32 ResumeKey;
	__le16 SearchFlags;
	char ResumeFileName[1];
} TRANSACTION2_FNEXT_REQ;

typedef struct smb_com_transaction2_fnext_rsp {
	struct smb_hdr hdr;	/* wct = 10 */
	struct trans2_resp t2;
	__u16 ByteCount;
} TRANSACTION2_FNEXT_RSP;

typedef struct smb_com_transaction2_fnext_rsp_parms {
	__le16 SearchCount;
	__le16 EndofSearch;
	__le16 EAErrorOffset;
	__le16 LastNameOffset;
} T2_FNEXT_RSP_PARMS;

/* QFSInfo Levels */
#define SMB_INFO_ALLOCATION         1
#define SMB_INFO_VOLUME             2
#define SMB_QUERY_FS_VOLUME_INFO    0x102
#define SMB_QUERY_FS_SIZE_INFO      0x103
#define SMB_QUERY_FS_DEVICE_INFO    0x104
#define SMB_QUERY_FS_ATTRIBUTE_INFO 0x105
#define SMB_QUERY_CIFS_UNIX_INFO    0x200
#define SMB_QUERY_POSIX_FS_INFO     0x201
#define SMB_QUERY_LABEL_INFO        0x3ea
#define SMB_QUERY_FS_QUOTA_INFO     0x3ee
#define SMB_QUERY_FS_FULL_SIZE_INFO 0x3ef
#define SMB_QUERY_OBJECTID_INFO     0x3f0

typedef struct smb_com_transaction2_qfsi_req {
	struct smb_hdr hdr;	/* wct = 14+ */
	__le16 TotalParameterCount;
	__le16 TotalDataCount;
	__le16 MaxParameterCount;
	__le16 MaxDataCount;
	__u8 MaxSetupCount;
	__u8 Reserved;
	__le16 Flags;
	__le32 Timeout;
	__u16 Reserved2;
	__le16 ParameterCount;
	__le16 ParameterOffset;
	__le16 DataCount;
	__le16 DataOffset;
	__u8 SetupCount;
	__u8 Reserved3;
	__le16 SubCommand;	/* one setup word */
	__le16 ByteCount;
	__u8 Pad;
	__le16 InformationLevel;
} TRANSACTION2_QFSI_REQ;

typedef struct smb_com_transaction_qfsi_rsp {
	struct smb_hdr hdr;	/* wct = 10 + SetupCount */
	struct trans2_resp t2;
	__u16 ByteCount;
	__u8 Pad;		/* may be three bytes *//* followed by data area */
} TRANSACTION2_QFSI_RSP;


/* SETFSInfo Levels */
#define SMB_SET_CIFS_UNIX_INFO    0x200
typedef struct smb_com_transaction2_setfsi_req {
	struct smb_hdr hdr;	/* wct = 15 */
	__le16 TotalParameterCount;
	__le16 TotalDataCount;
	__le16 MaxParameterCount;
	__le16 MaxDataCount;
	__u8 MaxSetupCount;
	__u8 Reserved;
	__le16 Flags;
	__le32 Timeout;
	__u16 Reserved2;
	__le16 ParameterCount;	/* 4 */
	__le16 ParameterOffset;
	__le16 DataCount;	/* 12 */
	__le16 DataOffset;
	__u8 SetupCount;	/* one */
	__u8 Reserved3;
	__le16 SubCommand;	/* TRANS2_SET_FS_INFORMATION */
	__le16 ByteCount;
	__u8 Pad;
	__u16 FileNum;		/* Parameters start. */
	__le16 InformationLevel;/* Parameters end. */
	__le16 ClientUnixMajor; /* Data start. */
	__le16 ClientUnixMinor;
	__le64 ClientUnixCap;   /* Data end */
} TRANSACTION2_SETFSI_REQ;

typedef struct smb_com_transaction2_setfsi_rsp {
	struct smb_hdr hdr;	/* wct = 10 */
	struct trans2_resp t2;
	__u16 ByteCount;
} TRANSACTION2_SETFSI_RSP;


typedef struct smb_com_transaction2_get_dfs_refer_req {
	struct smb_hdr hdr;	/* wct = 15 */
	__le16 TotalParameterCount;
	__le16 TotalDataCount;
	__le16 MaxParameterCount;
	__le16 MaxDataCount;
	__u8 MaxSetupCount;
	__u8 Reserved;
	__le16 Flags;
	__le32 Timeout;
	__u16 Reserved2;
	__le16 ParameterCount;
	__le16 ParameterOffset;
	__le16 DataCount;
	__le16 DataOffset;
	__u8 SetupCount;
	__u8 Reserved3;
	__le16 SubCommand;	/* one setup word */
	__le16 ByteCount;
	__u8 Pad[3];		/* Win2K has sent 0x0F01 (max resp length perhaps?) followed by one byte pad - doesn't seem to matter though */
	__le16 MaxReferralLevel;
	char RequestFileName[1];
} TRANSACTION2_GET_DFS_REFER_REQ;

typedef struct dfs_referral_level_3 {
	__le16 VersionNumber;
	__le16 ReferralSize;
	__le16 ServerType;	/* 0x0001 = CIFS server */
	__le16 ReferralFlags;	/* or proximity - not clear which since always set to zero - SNIA spec says 0x01 means strip off PathConsumed chars before submitting RequestFileName to remote node */
	__le16 TimeToLive;
	__le16 Proximity;
	__le16 DfsPathOffset;
	__le16 DfsAlternatePathOffset;
	__le16 NetworkAddressOffset;
} REFERRAL3;

typedef struct smb_com_transaction_get_dfs_refer_rsp {
	struct smb_hdr hdr;	/* wct = 10 */
	struct trans2_resp t2;
	__u16 ByteCount;
	__u8 Pad;
	__le16 PathConsumed;
	__le16 NumberOfReferrals;
	__le16 DFSFlags;
	__u16 Pad2;
	REFERRAL3 referrals[1];	/* array of level 3 dfs_referral structures */
	/* followed by the strings pointed to by the referral structures */
} TRANSACTION2_GET_DFS_REFER_RSP;

/* DFS Flags */
#define DFSREF_REFERRAL_SERVER  0x0001
#define DFSREF_STORAGE_SERVER   0x0002

/* IOCTL information */
/* List of ioctl function codes that look to be of interest to remote clients like this. */
/* Need to do some experimentation to make sure they all work remotely.                  */
/* Some of the following such as the encryption/compression ones would be                */
/* invoked from tools via a specialized hook into the VFS rather than via the            */
/* standard vfs entry points */
#define FSCTL_REQUEST_OPLOCK_LEVEL_1 0x00090000
#define FSCTL_REQUEST_OPLOCK_LEVEL_2 0x00090004
#define FSCTL_REQUEST_BATCH_OPLOCK   0x00090008
#define FSCTL_LOCK_VOLUME            0x00090018
#define FSCTL_UNLOCK_VOLUME          0x0009001C
#define FSCTL_GET_COMPRESSION        0x0009003C
#define FSCTL_SET_COMPRESSION        0x0009C040
#define FSCTL_REQUEST_FILTER_OPLOCK  0x0009008C
#define FSCTL_FILESYS_GET_STATISTICS 0x00090090
#define FSCTL_SET_REPARSE_POINT      0x000900A4
#define FSCTL_GET_REPARSE_POINT      0x000900A8
#define FSCTL_DELETE_REPARSE_POINT   0x000900AC
#define FSCTL_SET_SPARSE             0x000900C4
#define FSCTL_SET_ZERO_DATA          0x000900C8
#define FSCTL_SET_ENCRYPTION         0x000900D7
#define FSCTL_ENCRYPTION_FSCTL_IO    0x000900DB
#define FSCTL_WRITE_RAW_ENCRYPTED    0x000900DF
#define FSCTL_READ_RAW_ENCRYPTED     0x000900E3
#define FSCTL_SIS_COPYFILE           0x00090100
#define FSCTL_SIS_LINK_FILES         0x0009C104

#define IO_REPARSE_TAG_MOUNT_POINT   0xA0000003
#define IO_REPARSE_TAG_HSM           0xC0000004
#define IO_REPARSE_TAG_SIS           0x80000007

/*
 ************************************************************************
 * All structs for everything above the SMB PDUs themselves
 * (such as the T2 level specific data) go here                  
 ************************************************************************
 */

/*
 * Information on a server
 */

struct serverInfo {
	char name[16];
	unsigned char versionMajor;
	unsigned char versionMinor;
	unsigned long type;
	unsigned int commentOffset;
};

/*
 * The following structure is the format of the data returned on a NetShareEnum
 * with level "90" (x5A)
 */

struct shareInfo {
	char shareName[13];
	char pad;
	unsigned short type;
	unsigned int commentOffset;
};

struct aliasInfo {
	char aliasName[9];
	char pad;
	unsigned int commentOffset;
	unsigned char type[2];
};

struct aliasInfo92 {
	int aliasNameOffset;
	int serverNameOffset;
	int shareNameOffset;
};

typedef struct {
	__le64 TotalAllocationUnits;
	__le64 FreeAllocationUnits;
	__le32 SectorsPerAllocationUnit;
	__le32 BytesPerSector;
} FILE_SYSTEM_INFO;		/* size info, level 0x103 */

typedef struct {
	__le16 MajorVersionNumber;
	__le16 MinorVersionNumber;
	__le64 Capability;
} FILE_SYSTEM_UNIX_INFO;	/* Unix extensions info, level 0x200 */

/* Version numbers for CIFS UNIX major and minor. */
#define CIFS_UNIX_MAJOR_VERSION 1
#define CIFS_UNIX_MINOR_VERSION 0

/* Linux/Unix extensions capability flags */
#define CIFS_UNIX_FCNTL_CAP             0x00000001 /* support for fcntl locks */
#define CIFS_UNIX_POSIX_ACL_CAP         0x00000002 /* support getfacl/setfacl */
#define CIFS_UNIX_XATTR_CAP             0x00000004 /* support new namespace   */
#define CIFS_UNIX_EXTATTR_CAP           0x00000008 /* support chattr/chflag   */
#define CIFS_UNIX_POSIX_PATHNAMES_CAP   0x00000010 /* Use POSIX pathnames on the wire. */

#define CIFS_POSIX_EXTENSIONS           0x00000010 /* support for new QFSInfo */

typedef struct {
	/* For undefined recommended transfer size return -1 in that field */
	__le32 OptimalTransferSize;  /* bsize on some os, iosize on other os */
	__le32 BlockSize; 
    /* The next three fields are in terms of the block size.
	(above). If block size is unknown, 4096 would be a
	reasonable block size for a server to report. 
	Note that returning the blocks/blocksavail removes need
	to make a second call (to QFSInfo level 0x103 to get this info.
	UserBlockAvail is typically less than or equal to BlocksAvail,
	if no distinction is made return the same value in each */
	__le64 TotalBlocks;
	__le64 BlocksAvail;       /* bfree */
	__le64 UserBlocksAvail;   /* bavail */
    /* For undefined Node fields or FSID return -1 */
	__le64 TotalFileNodes;
	__le64 FreeFileNodes;
	__le64 FileSysIdentifier;   /* fsid */
	/* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
	/* NB flags can come from FILE_SYSTEM_DEVICE_INFO call   */
} FILE_SYSTEM_POSIX_INFO;

/* DeviceType Flags */
#define FILE_DEVICE_CD_ROM              0x00000002
#define FILE_DEVICE_CD_ROM_FILE_SYSTEM  0x00000003
#define FILE_DEVICE_DFS                 0x00000006
#define FILE_DEVICE_DISK                0x00000007
#define FILE_DEVICE_DISK_FILE_SYSTEM    0x00000008
#define FILE_DEVICE_FILE_SYSTEM         0x00000009
#define FILE_DEVICE_NAMED_PIPE          0x00000011
#define FILE_DEVICE_NETWORK             0x00000012
#define FILE_DEVICE_NETWORK_FILE_SYSTEM 0x00000014
#define FILE_DEVICE_NULL                0x00000015
#define FILE_DEVICE_PARALLEL_PORT       0x00000016
#define FILE_DEVICE_PRINTER             0x00000018
#define FILE_DEVICE_SERIAL_PORT         0x0000001b
#define FILE_DEVICE_STREAMS             0x0000001e
#define FILE_DEVICE_TAPE                0x0000001f
#define FILE_DEVICE_TAPE_FILE_SYSTEM    0x00000020
#define FILE_DEVICE_VIRTUAL_DISK        0x00000024
#define FILE_DEVICE_NETWORK_REDIRECTOR  0x00000028

typedef struct {
	__le32 DeviceType;
	__le32 DeviceCharacteristics;
} FILE_SYSTEM_DEVICE_INFO;	/* device info, level 0x104 */

typedef struct {
	__le32 Attributes;
	__le32 MaxPathNameComponentLength;
	__le32 FileSystemNameLen;
	char FileSystemName[52]; /* do not really need to save this - so potentially get only subset of name */
} FILE_SYSTEM_ATTRIBUTE_INFO;

/******************************************************************************/
/* QueryFileInfo/QueryPathinfo (also for SetPath/SetFile) data buffer formats */
/******************************************************************************/
typedef struct { /* data block encoding of response to level 263 QPathInfo */
	__le64 CreationTime;
	__le64 LastAccessTime;
	__le64 LastWriteTime;
	__le64 ChangeTime;
	__le32 Attributes;
	__u32 Pad1;
	__le64 AllocationSize;
	__le64 EndOfFile;	/* size ie offset to first free byte in file */
	__le32 NumberOfLinks;	/* hard links */
	__u8 DeletePending;
	__u8 Directory;
	__u16 Pad2;
	__u64 IndexNumber;
	__le32 EASize;
	__le32 AccessFlags;
	__u64 IndexNumber1;
	__le64 CurrentByteOffset;
	__le32 Mode;
	__le32 AlignmentRequirement;
	__le32 FileNameLength;
	char FileName[1];
} FILE_ALL_INFO;		/* level 0x107 QPathInfo */

/* defines for enumerating possible values of the Unix type field below */
#define UNIX_FILE      0
#define UNIX_DIR       1
#define UNIX_SYMLINK   2
#define UNIX_CHARDEV   3
#define UNIX_BLOCKDEV  4
#define UNIX_FIFO      5
#define UNIX_SOCKET    6
typedef struct {
	__le64 EndOfFile;
	__le64 NumOfBytes;
	__le64 LastStatusChange; /*SNIA specs DCE time for the 3 time fields */
	__le64 LastAccessTime;
	__le64 LastModificationTime;
	__le64 Uid;
	__le64 Gid;
	__le32 Type;
	__le64 DevMajor;
	__le64 DevMinor;
	__u64 UniqueId;
	__le64 Permissions;
	__le64 Nlinks;
} FILE_UNIX_BASIC_INFO;		/* level 0x200 QPathInfo */

typedef struct {
	char LinkDest[1];
} FILE_UNIX_LINK_INFO;		/* level 0x201 QPathInfo */

/* The following three structures are needed only for
	setting time to NT4 and some older servers via
	the primitive DOS time format */
typedef struct {
	__u16 Day:5;
	__u16 Month:4;
	__u16 Year:7;
} SMB_DATE;

typedef struct {
	__u16 TwoSeconds:5;
	__u16 Minutes:6;
	__u16 Hours:5;
} SMB_TIME;

typedef struct {
	__le16 CreationDate; /* SMB Date see above */
	__le16 CreationTime; /* SMB Time */
	__le16 LastAccessDate;
	__le16 LastAccessTime;
	__le16 LastWriteDate;
	__le16 LastWriteTime;
	__le32 DataSize; /* File Size (EOF) */
	__le32 AllocationSize;
	__le16 Attributes; /* verify not u32 */
	__le32 EASize;
} FILE_INFO_STANDARD;  /* level 1 SetPath/FileInfo */

typedef struct {
	__le64 CreationTime;
	__le64 LastAccessTime;
	__le64 LastWriteTime;
	__le64 ChangeTime;
	__le32 Attributes;
	__u32 Pad;
} FILE_BASIC_INFO;		/* size info, level 0x101 */

struct file_allocation_info {
	__le64 AllocationSize; /* Note old Samba srvr rounds this up too much */
};	/* size used on disk, level 0x103 for set, 0x105 for query */

struct file_end_of_file_info {
	__le64 FileSize;		/* offset to end of file */
};	/* size info, level 0x104 for set, 0x106 for query */

struct file_alt_name_info {
	__u8   alt_name[1];
};      /* level 0x0108 */

struct file_stream_info {
	__le32 number_of_streams;  /* BB check sizes and verify location */
	/* followed by info on streams themselves 
		u64 size;
		u64 allocation_size 
		stream info */
};      /* level 0x109 */

struct file_compression_info {
	__le64 compressed_size;
	__le16 format;
	__u8   unit_shift;
	__u8   ch_shift;
	__u8   cl_shift;
	__u8   pad[3];
};      /* level 0x10b */

/* POSIX ACL set/query path info structures */
#define CIFS_ACL_VERSION 1
struct cifs_posix_ace { /* access control entry (ACE) */
	__u8  cifs_e_tag;
	__u8  cifs_e_perm;
	__le64 cifs_uid; /* or gid */
}; 

struct cifs_posix_acl { /* access conrol list  (ACL) */
	__le16	version;
	__le16	access_entry_count;  /* access ACL - count of entries */
	__le16	default_entry_count; /* default ACL - count of entries */
	struct cifs_posix_ace ace_array[0];
	/* followed by
	struct cifs_posix_ace default_ace_arraay[] */
};  /* level 0x204 */

/* types of access control entries already defined in posix_acl.h */
/* #define CIFS_POSIX_ACL_USER_OBJ	 0x01
#define CIFS_POSIX_ACL_USER      0x02
#define CIFS_POSIX_ACL_GROUP_OBJ 0x04
#define CIFS_POSIX_ACL_GROUP     0x08
#define CIFS_POSIX_ACL_MASK      0x10
#define CIFS_POSIX_ACL_OTHER     0x20 */

/* types of perms */
/* #define CIFS_POSIX_ACL_EXECUTE   0x01
#define CIFS_POSIX_ACL_WRITE     0x02
#define CIFS_POSIX_ACL_READ	     0x04 */

/* end of POSIX ACL definitions */

struct file_internal_info {
	__u64  UniqueId; /* inode number */
};      /* level 0x3ee */
struct file_mode_info {
	__le32	Mode;
};      /* level 0x3f8 */

struct file_attrib_tag {
	__le32 Attribute;
	__le32 ReparseTag;
};      /* level 0x40b */


/********************************************************/
/*  FindFirst/FindNext transact2 data buffer formats    */ 
/********************************************************/

typedef struct {
	__le32 NextEntryOffset;
	__u32 ResumeKey; /* as with FileIndex - no need to convert */
	__le64 EndOfFile;
	__le64 NumOfBytes;
	__le64 LastStatusChange; /*SNIA specs DCE time for the 3 time fields */
	__le64 LastAccessTime;
	__le64 LastModificationTime;
	__le64 Uid;
	__le64 Gid;
	__le32 Type;
	__le64 DevMajor;
	__le64 DevMinor;
	__u64 UniqueId;
	__le64 Permissions;
	__le64 Nlinks;
	char FileName[1];
} FILE_UNIX_INFO; /* level 0x202 */

typedef struct {
	__le32 NextEntryOffset;
	__u32 FileIndex;
	__le64 CreationTime;
	__le64 LastAccessTime;
	__le64 LastWriteTime;
	__le64 ChangeTime;
	__le64 EndOfFile;
	__le64 AllocationSize;
	__le32 ExtFileAttributes;
	__le32 FileNameLength;
	char FileName[1];
} FILE_DIRECTORY_INFO;   /* level 0x101 FF response data area */

typedef struct {
	__le32 NextEntryOffset;
	__u32 FileIndex;
	__le64 CreationTime;
	__le64 LastAccessTime;
	__le64 LastWriteTime;
	__le64 ChangeTime;
	__le64 EndOfFile;
	__le64 AllocationSize;
	__le32 ExtFileAttributes;
	__le32 FileNameLength;
	__le32 EaSize; /* length of the xattrs */
	char FileName[1];
} FILE_FULL_DIRECTORY_INFO;   /* level 0x102 FF response data area */

typedef struct {
	__le32 NextEntryOffset;
	__u32 FileIndex;
	__le64 CreationTime;
	__le64 LastAccessTime;
	__le64 LastWriteTime;
	__le64 ChangeTime;
	__le64 EndOfFile;
	__le64 AllocationSize;
	__le32 ExtFileAttributes;
	__le32 FileNameLength;
	__le32 EaSize; /* EA size */
	__le32 Reserved;
	__u64 UniqueId; /* inode num - le since Samba puts ino in low 32 bit*/
	char FileName[1];
} SEARCH_ID_FULL_DIR_INFO;   /* level 0x105 FF response data area */

typedef struct {
	__le32 NextEntryOffset;
	__u32 FileIndex;
	__le64 CreationTime;
	__le64 LastAccessTime;
	__le64 LastWriteTime;
	__le64 ChangeTime;
	__le64 EndOfFile;
	__le64 AllocationSize;
	__le32 ExtFileAttributes;
	__le32 FileNameLength; 
	__le32 EaSize; /* length of the xattrs */
	__u8   ShortNameLength;
	__u8   Reserved;
	__u8   ShortName[12];
	char FileName[1];
} FILE_BOTH_DIRECTORY_INFO;   /* level 0x104 FF response data area */


struct gea {
	unsigned char name_len;
	char name[1];
};

struct gealist {
	unsigned long list_len;
	struct gea list[1];
};

struct fea {
	unsigned char EA_flags;
	__u8 name_len;
	__le16 value_len;
	char name[1];
	/* optionally followed by value */
};
/* flags for _FEA.fEA */
#define FEA_NEEDEA         0x80	/* need EA bit */

struct fealist {
	__le32 list_len;
	struct fea list[1];
};

/* used to hold an arbitrary blob of data */
struct data_blob {
	__u8 *data;
	size_t length;
	void (*free) (struct data_blob * data_blob);
};


#ifdef CONFIG_CIFS_POSIX
/* 
	For better POSIX semantics from Linux client, (even better
	than the existing CIFS Unix Extensions) we need updated PDUs for:
	
	1) PosixCreateX - to set and return the mode, inode#, device info and
	perhaps add a CreateDevice - to create Pipes and other special .inodes
	Also note POSIX open flags
	2) Close - to return the last write time to do cache across close more safely
	3) FindFirst return unique inode number - what about resume key, two 
	forms short (matches readdir) and full (enough info to cache inodes)
	4) Mkdir - set mode
	
	And under consideration: 
	5) FindClose2 (return nanosecond timestamp ??)
	6) Use nanosecond timestamps throughout all time fields if 
	   corresponding attribute flag is set
	7) sendfile - handle based copy
	8) Direct i/o
	9) Misc fcntls?
	
	what about fixing 64 bit alignment
	
	There are also various legacy SMB/CIFS requests used as is
	
	From existing Lanman and NTLM dialects:
	--------------------------------------
	NEGOTIATE
	SESSION_SETUP_ANDX (BB which?)
	TREE_CONNECT_ANDX (BB which wct?)
	TREE_DISCONNECT (BB add volume timestamp on response)
	LOGOFF_ANDX
	DELETE (note delete open file behavior)
	DELETE_DIRECTORY
	READ_AND_X
	WRITE_AND_X
	LOCKING_AND_X (note posix lock semantics)
	RENAME (note rename across dirs and open file rename posix behaviors)
	NT_RENAME (for hardlinks) Is this good enough for all features?
	FIND_CLOSE2
	TRANSACTION2 (18 cases)
		SMB_SET_FILE_END_OF_FILE_INFO2 SMB_SET_PATH_END_OF_FILE_INFO2
		(BB verify that never need to set allocation size)
		SMB_SET_FILE_BASIC_INFO2 (setting times - BB can it be done via Unix ext?)
	
	COPY (note support for copy across directories) - FUTURE, OPTIONAL
	setting/getting OS/2 EAs - FUTURE (BB can this handle
	setting Linux xattrs perfectly)         - OPTIONAL
	dnotify                                 - FUTURE, OPTIONAL
	quota                                   - FUTURE, OPTIONAL
			
	Note that various requests implemented for NT interop such as 
		NT_TRANSACT (IOCTL) QueryReparseInfo
	are unneeded to servers compliant with the CIFS POSIX extensions
	
	From CIFS Unix Extensions:
	-------------------------
	T2 SET_PATH_INFO (SMB_SET_FILE_UNIX_LINK) for symlinks
	T2 SET_PATH_INFO (SMB_SET_FILE_BASIC_INFO2)
	T2 QUERY_PATH_INFO (SMB_QUERY_FILE_UNIX_LINK)
	T2 QUERY_PATH_INFO (SMB_QUERY_FILE_UNIX_BASIC) - BB check for missing inode fields
					Actually need QUERY_FILE_UNIX_INFO since has inode num
					BB what about a) blksize/blkbits/blocks
								  b) i_version
								  c) i_rdev
								  d) notify mask?
								  e) generation
								  f) size_seqcount
	T2 FIND_FIRST/FIND_NEXT FIND_FILE_UNIX
	TRANS2_GET_DFS_REFERRAL				  - OPTIONAL but recommended
	T2_QFS_INFO QueryDevice/AttributeInfo - OPTIONAL
	
	
 */

/* xsymlink is a symlink format (used by MacOS) that can be used
   to save symlink info in a regular file when 
   mounted to operating systems that do not
   support the cifs Unix extensions or EAs (for xattr
   based symlinks).  For such a file to be recognized
   as containing symlink data: 

   1) file size must be 1067, 
   2) signature must begin file data,
   3) length field must be set to ASCII representation
	of a number which is less than or equal to 1024, 
   4) md5 must match that of the path data */

struct xsymlink {
	/* 1067 bytes */
	char signature[4]; /* XSym */ /* not null terminated */
	char cr0;         /* \n */
/* ASCII representation of length (4 bytes decimal) terminated by \n not null */
	char length[4];
	char cr1;         /* \n */
/* md5 of valid subset of path ie path[0] through path[length-1] */
	__u8 md5[32];    
	char cr2;        /* \n */
/* if room left, then end with \n then 0x20s by convention but not required */
	char path[1024];  
};

typedef struct file_xattr_info {
	/* BB do we need another field for flags? BB */
	__u32 xattr_name_len;
	__u32 xattr_value_len;
	char  xattr_name[0];
	/* followed by xattr_value[xattr_value_len], no pad */
} FILE_XATTR_INFO;	/* extended attribute, info level 0x205 */


/* flags for chattr command */
#define EXT_SECURE_DELETE		0x00000001 /* EXT3_SECRM_FL */
#define EXT_ENABLE_UNDELETE		0x00000002 /* EXT3_UNRM_FL */
/* Reserved for compress file 0x4 */
#define EXT_SYNCHRONOUS			0x00000008 /* EXT3_SYNC_FL */
#define EXT_IMMUTABLE_FL		0x00000010 /* EXT3_IMMUTABLE_FL */
#define EXT_OPEN_APPEND_ONLY		0x00000020 /* EXT3_APPEND_FL */
#define EXT_DO_NOT_BACKUP		0x00000040 /* EXT3_NODUMP_FL */
#define EXT_NO_UPDATE_ATIME		0x00000080 /* EXT3_NOATIME_FL */
/* 0x100 through 0x800 reserved for compression flags and are GET-ONLY */
#define EXT_HASH_TREE_INDEXED_DIR	0x00001000 /* GET-ONLY EXT3_INDEX_FL */
/* 0x2000 reserved for IMAGIC_FL */
#define EXT_JOURNAL_THIS_FILE	0x00004000 /* GET-ONLY EXT3_JOURNAL_DATA_FL */
/* 0x8000 reserved for EXT3_NOTAIL_FL */
#define EXT_SYNCHRONOUS_DIR		0x00010000 /* EXT3_DIRSYNC_FL */
#define EXT_TOPDIR			0x00020000 /* EXT3_TOPDIR_FL */

#define EXT_SET_MASK			0x000300FF
#define EXT_GET_MASK			0x0003DFFF

typedef struct file_chattr_info {
	__le64	mask; /* list of all possible attribute bits */
	__le64	mode; /* list of actual attribute bits on this inode */
} FILE_CHATTR_INFO;  /* ext attributes (chattr, chflags) level 0x206 */

#endif 

#pragma pack()			/* resume default structure packing */

#endif				/* _CIFSPDU_H */