fs/cifs/cifspdu.h

   1 /*
   2  *   fs/cifs/cifspdu.h
   3  *
   4  *   Copyright (c) International Business Machines  Corp., 2002,2009
   5  *   Author(s): Steve French (sfrench@us.ibm.com)
   6  *
   7  *   This library is free software; you can redistribute it and/or modify
   8  *   it under the terms of the GNU Lesser General Public License as published
   9  *   by the Free Software Foundation; either version 2.1 of the License, or
  10  *   (at your option) any later version.
  11  *
  12  *   This library is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  15  *   the GNU Lesser General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU Lesser General Public License
  18  *   along with this library; if not, write to the Free Software
  19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  20  */
  21
  22 #ifndef _CIFSPDU_H
  23 #define _CIFSPDU_H
  24
  25 #include <net/sock.h>
  26 #include <asm/unaligned.h>
  27 #include "smbfsctl.h"
  28
  29 #ifdef CONFIG_CIFS_WEAK_PW_HASH
  30 #define LANMAN_PROT 0
  31 #define LANMAN2_PROT 1
  32 #define CIFS_PROT   2
  33 #else
  34 #define CIFS_PROT   0
  35 #endif
  36 #define POSIX_PROT  (CIFS_PROT+1)
  37 #define BAD_PROT 0xFFFF
  38
  39 /* SMB command codes:
  40  * Note some commands have minimal (wct=0,bcc=0), or uninteresting, responses
  41  * (ie which include no useful data other than the SMB error code itself).
  42  * This can allow us to avoid response buffer allocations and copy in some cases
  43  */
  44 #define SMB_COM_CREATE_DIRECTORY      0x00 /* trivial response */
  45 #define SMB_COM_DELETE_DIRECTORY      0x01 /* trivial response */
  46 #define SMB_COM_CLOSE                 0x04 /* triv req/rsp, timestamp ignored */
  47 #define SMB_COM_FLUSH                 0x05 /* triv req/rsp */
  48 #define SMB_COM_DELETE                0x06 /* trivial response */
  49 #define SMB_COM_RENAME                0x07 /* trivial response */
  50 #define SMB_COM_QUERY_INFORMATION     0x08 /* aka getattr */
  51 #define SMB_COM_SETATTR               0x09 /* trivial response */
  52 #define SMB_COM_LOCKING_ANDX          0x24 /* trivial response */
  53 #define SMB_COM_COPY                  0x29 /* trivial rsp, fail filename ignrd*/
  54 #define SMB_COM_ECHO                  0x2B /* echo request */
  55 #define SMB_COM_OPEN_ANDX             0x2D /* Legacy open for old servers */
  56 #define SMB_COM_READ_ANDX             0x2E
  57 #define SMB_COM_WRITE_ANDX            0x2F
  58 #define SMB_COM_TRANSACTION2          0x32
  59 #define SMB_COM_TRANSACTION2_SECONDARY 0x33
  60 #define SMB_COM_FIND_CLOSE2           0x34 /* trivial response */
  61 #define SMB_COM_TREE_DISCONNECT       0x71 /* trivial response */
  62 #define SMB_COM_NEGOTIATE             0x72
  63 #define SMB_COM_SESSION_SETUP_ANDX    0x73
  64 #define SMB_COM_LOGOFF_ANDX           0x74 /* trivial response */
  65 #define SMB_COM_TREE_CONNECT_ANDX     0x75
  66 #define SMB_COM_NT_TRANSACT           0xA0
  67 #define SMB_COM_NT_TRANSACT_SECONDARY 0xA1
  68 #define SMB_COM_NT_CREATE_ANDX        0xA2
  69 #define SMB_COM_NT_CANCEL             0xA4 /* no response */
  70 #define SMB_COM_NT_RENAME             0xA5 /* trivial response */
  71
  72 /* Transact2 subcommand codes */
  73 #define TRANS2_OPEN                   0x00
  74 #define TRANS2_FIND_FIRST             0x01
  75 #define TRANS2_FIND_NEXT              0x02
  76 #define TRANS2_QUERY_FS_INFORMATION   0x03
  77 #define TRANS2_SET_FS_INFORMATION     0x04
  78 #define TRANS2_QUERY_PATH_INFORMATION 0x05
  79 #define TRANS2_SET_PATH_INFORMATION   0x06
  80 #define TRANS2_QUERY_FILE_INFORMATION 0x07
  81 #define TRANS2_SET_FILE_INFORMATION   0x08
  82 #define TRANS2_GET_DFS_REFERRAL       0x10
  83 #define TRANS2_REPORT_DFS_INCOSISTENCY 0x11
  84
  85 /* SMB Transact (Named Pipe) subcommand codes */
  86 #define TRANS_SET_NMPIPE_STATE      0x0001
  87 #define TRANS_RAW_READ_NMPIPE       0x0011
  88 #define TRANS_QUERY_NMPIPE_STATE    0x0021
  89 #define TRANS_QUERY_NMPIPE_INFO     0x0022
  90 #define TRANS_PEEK_NMPIPE           0x0023
  91 #define TRANS_TRANSACT_NMPIPE       0x0026
  92 #define TRANS_RAW_WRITE_NMPIPE      0x0031
  93 #define TRANS_READ_NMPIPE           0x0036
  94 #define TRANS_WRITE_NMPIPE          0x0037
  95 #define TRANS_WAIT_NMPIPE           0x0053
  96 #define TRANS_CALL_NMPIPE           0x0054
  97
  98 /* NT Transact subcommand codes */
  99 #define NT_TRANSACT_CREATE            0x01
 100 #define NT_TRANSACT_IOCTL             0x02
 101 #define NT_TRANSACT_SET_SECURITY_DESC 0x03
 102 #define NT_TRANSACT_NOTIFY_CHANGE     0x04
 103 #define NT_TRANSACT_RENAME            0x05
 104 #define NT_TRANSACT_QUERY_SECURITY_DESC 0x06
 105 #define NT_TRANSACT_GET_USER_QUOTA    0x07
 106 #define NT_TRANSACT_SET_USER_QUOTA    0x08
 107
 108 #define MAX_CIFS_SMALL_BUFFER_SIZE 448 /* big enough for most */
 109 /* future chained NTCreateXReadX bigger, but for time being NTCreateX biggest */
 110 /* among the requests (NTCreateX response is bigger with wct of 34) */
 111 #define MAX_CIFS_HDR_SIZE 0x58 /* 4 len + 32 hdr + (2*24 wct) + 2 bct + 2 pad */
 112 #define CIFS_SMALL_PATH 120 /* allows for (448-88)/3 */
 113
 114 /* internal cifs vfs structures */
 115 /*****************************************************************
 116  * All constants go here
 117  *****************************************************************
 118  */
 119
 120 /*
 121  * Starting value for maximum SMB size negotiation
 122  */
 123 #define CIFS_MAX_MSGSIZE (4*4096)
 124
 125 /*
 126  * Size of encrypted user password in bytes
 127  */
 128 #define CIFS_ENCPWD_SIZE (16)
 129
 130 /*
 131  * Size of the crypto key returned on the negotiate SMB in bytes
 132  */
 133 #define CIFS_CRYPTO_KEY_SIZE (8)
 134
 135 /*
 136  * Size of the ntlm client response
 137  */
 138 #define CIFS_AUTH_RESP_SIZE (24)
 139
 140 /*
 141  * Size of the session key (crypto key encrypted with the password
 142  */
 143 #define CIFS_SESS_KEY_SIZE (16)
 144
 145 /*
 146  * Size of the smb3 signing key
 147  */
 148 #define SMB3_SIGN_KEY_SIZE (16)
 149
 150 #define CIFS_CLIENT_CHALLENGE_SIZE (8)
 151 #define CIFS_SERVER_CHALLENGE_SIZE (8)
 152 #define CIFS_HMAC_MD5_HASH_SIZE (16)
 153 #define CIFS_CPHTXT_SIZE (16)
 154 #define CIFS_NTHASH_SIZE (16)
 155
 156 /*
 157  * Maximum user name length
 158  */
 159 #define CIFS_UNLEN (20)
 160
 161 /*
 162  * Flags on SMB open
 163  */
 164 #define SMBOPEN_WRITE_THROUGH 0x4000
 165 #define SMBOPEN_DENY_ALL      0x0010
 166 #define SMBOPEN_DENY_WRITE    0x0020
 167 #define SMBOPEN_DENY_READ     0x0030
 168 #define SMBOPEN_DENY_NONE     0x0040
 169 #define SMBOPEN_READ          0x0000
 170 #define SMBOPEN_WRITE         0x0001
 171 #define SMBOPEN_READWRITE     0x0002
 172 #define SMBOPEN_EXECUTE       0x0003
 173
 174 #define SMBOPEN_OCREATE       0x0010
 175 #define SMBOPEN_OTRUNC        0x0002
 176 #define SMBOPEN_OAPPEND       0x0001
 177
 178 /*
 179  * SMB flag definitions
 180  */
 181 #define SMBFLG_EXTD_LOCK 0x01   /* server supports lock-read write-unlock smb */
 182 #define SMBFLG_RCV_POSTED 0x02  /* obsolete */
 183 #define SMBFLG_RSVD 0x04
 184 #define SMBFLG_CASELESS 0x08    /* all pathnames treated as caseless (off
 185                                 implies case sensitive file handling request) */
 186 #define SMBFLG_CANONICAL_PATH_FORMAT 0x10       /* obsolete */
 187 #define SMBFLG_OLD_OPLOCK 0x20  /* obsolete */
 188 #define SMBFLG_OLD_OPLOCK_NOTIFY 0x40   /* obsolete */
 189 #define SMBFLG_RESPONSE 0x80    /* this PDU is a response from server */
 190
 191 /*
 192  * SMB flag2 definitions
 193  */
 194 #define SMBFLG2_KNOWS_LONG_NAMES cpu_to_le16(1) /* can send long (non-8.3)
 195                                                    path names in response */
 196 #define SMBFLG2_KNOWS_EAS cpu_to_le16(2)
 197 #define SMBFLG2_SECURITY_SIGNATURE cpu_to_le16(4)
 198 #define SMBFLG2_COMPRESSED (8)
 199 #define SMBFLG2_SECURITY_SIGNATURE_REQUIRED (0x10)
 200 #define SMBFLG2_IS_LONG_NAME cpu_to_le16(0x40)
 201 #define SMBFLG2_REPARSE_PATH (0x400)
 202 #define SMBFLG2_EXT_SEC cpu_to_le16(0x800)
 203 #define SMBFLG2_DFS cpu_to_le16(0x1000)
 204 #define SMBFLG2_PAGING_IO cpu_to_le16(0x2000)
 205 #define SMBFLG2_ERR_STATUS cpu_to_le16(0x4000)
 206 #define SMBFLG2_UNICODE cpu_to_le16(0x8000)
 207
 208 /*
 209  * These are the file access permission bits defined in CIFS for the
 210  * NTCreateAndX as well as the level 0x107
 211  * TRANS2_QUERY_PATH_INFORMATION API.  The level 0x107, SMB_QUERY_FILE_ALL_INFO
 212  * responds with the AccessFlags.
 213  * The AccessFlags specifies the access permissions a caller has to the
 214  * file and can have any suitable combination of the following values:
 215  */
 216
 217 #define FILE_READ_DATA        0x00000001  /* Data can be read from the file   */
 218 #define FILE_WRITE_DATA       0x00000002  /* Data can be written to the file  */
 219 #define FILE_APPEND_DATA      0x00000004  /* Data can be appended to the file */
 220 #define FILE_READ_EA          0x00000008  /* Extended attributes associated   */
 221                                           /* with the file can be read        */
 222 #define FILE_WRITE_EA         0x00000010  /* Extended attributes associated   */
 223                                           /* with the file can be written     */
 224 #define FILE_EXECUTE          0x00000020  /*Data can be read into memory from */
 225                                           /* the file using system paging I/O */
 226 #define FILE_DELETE_CHILD     0x00000040
 227 #define FILE_READ_ATTRIBUTES  0x00000080  /* Attributes associated with the   */
 228                                           /* file can be read                 */
 229 #define FILE_WRITE_ATTRIBUTES 0x00000100  /* Attributes associated with the   */
 230                                           /* file can be written              */
 231 #define DELETE                0x00010000  /* The file can be deleted          */
 232 #define READ_CONTROL          0x00020000  /* The access control list and      */
 233                                           /* ownership associated with the    */
 234                                           /* file can be read                 */
 235 #define WRITE_DAC             0x00040000  /* The access control list and      */
 236                                           /* ownership associated with the    */
 237                                           /* file can be written.             */
 238 #define WRITE_OWNER           0x00080000  /* Ownership information associated */
 239                                           /* with the file can be written     */
 240 #define SYNCHRONIZE           0x00100000  /* The file handle can waited on to */
 241                                           /* synchronize with the completion  */
 242                                           /* of an input/output request       */
 243 #define GENERIC_ALL           0x10000000
 244 #define GENERIC_EXECUTE       0x20000000
 245 #define GENERIC_WRITE         0x40000000
 246 #define GENERIC_READ          0x80000000
 247                                          /* In summary - Relevant file       */
 248                                          /* access flags from CIFS are       */
 249                                          /* file_read_data, file_write_data  */
 250                                          /* file_execute, file_read_attributes*/
 251                                          /* write_dac, and delete.           */
 252
 253 #define FILE_READ_RIGHTS (FILE_READ_DATA | FILE_READ_EA | FILE_READ_ATTRIBUTES)
 254 #define FILE_WRITE_RIGHTS (FILE_WRITE_DATA | FILE_APPEND_DATA \
 255                                 | FILE_WRITE_EA | FILE_WRITE_ATTRIBUTES)
 256 #define FILE_EXEC_RIGHTS (FILE_EXECUTE)
 257
 258 #define SET_FILE_READ_RIGHTS (FILE_READ_DATA | FILE_READ_EA | FILE_WRITE_EA \
 259                                 | FILE_READ_ATTRIBUTES \
 260                                 | FILE_WRITE_ATTRIBUTES \
 261                                 | DELETE | READ_CONTROL | WRITE_DAC \
 262                                 | WRITE_OWNER | SYNCHRONIZE)
 263 #define SET_FILE_WRITE_RIGHTS (FILE_WRITE_DATA | FILE_APPEND_DATA \
 264                                 | FILE_READ_EA | FILE_WRITE_EA \
 265                                 | FILE_DELETE_CHILD | FILE_READ_ATTRIBUTES \
 266                                 | FILE_WRITE_ATTRIBUTES \
 267                                 | DELETE | READ_CONTROL | WRITE_DAC \
 268                                 | WRITE_OWNER | SYNCHRONIZE)
 269 #define SET_FILE_EXEC_RIGHTS (FILE_READ_EA | FILE_WRITE_EA | FILE_EXECUTE \
 270                                 | FILE_READ_ATTRIBUTES \
 271                                 | FILE_WRITE_ATTRIBUTES \
 272                                 | DELETE | READ_CONTROL | WRITE_DAC \
 273                                 | WRITE_OWNER | SYNCHRONIZE)
 274
 275 #define SET_MINIMUM_RIGHTS (FILE_READ_EA | FILE_READ_ATTRIBUTES \
 276                                 | READ_CONTROL | SYNCHRONIZE)
 277
 278
 279 /*
 280  * Invalid readdir handle
 281  */
 282 #define CIFS_NO_HANDLE        0xFFFF
 283
 284 #define NO_CHANGE_64          0xFFFFFFFFFFFFFFFFULL
 285
 286 /* IPC$ in ASCII */
 287 #define CIFS_IPC_RESOURCE "\x49\x50\x43\x24"
 288
 289 /* IPC$ in Unicode */
 290 #define CIFS_IPC_UNICODE_RESOURCE "\x00\x49\x00\x50\x00\x43\x00\x24\x00\x00"
 291
 292 /* Unicode Null terminate 2 bytes of 0 */
 293 #define UNICODE_NULL "\x00\x00"
 294 #define ASCII_NULL 0x00
 295
 296 /*
 297  * Server type values (returned on EnumServer API
 298  */
 299 #define CIFS_SV_TYPE_DC     0x00000008
 300 #define CIFS_SV_TYPE_BACKDC 0x00000010
 301
 302 /*
 303  * Alias type flags (From EnumAlias API call
 304  */
 305 #define CIFS_ALIAS_TYPE_FILE 0x0001
 306 #define CIFS_SHARE_TYPE_FILE 0x0000
 307
 308 /*
 309  * File Attribute flags
 310  */
 311 #define ATTR_READONLY  0x0001
 312 #define ATTR_HIDDEN    0x0002
 313 #define ATTR_SYSTEM    0x0004
 314 #define ATTR_VOLUME    0x0008
 315 #define ATTR_DIRECTORY 0x0010
 316 #define ATTR_ARCHIVE   0x0020
 317 #define ATTR_DEVICE    0x0040
 318 #define ATTR_NORMAL    0x0080
 319 #define ATTR_TEMPORARY 0x0100
 320 #define ATTR_SPARSE    0x0200
 321 #define ATTR_REPARSE   0x0400
 322 #define ATTR_COMPRESSED 0x0800
 323 #define ATTR_OFFLINE    0x1000  /* ie file not immediately available -
 324                                         on offline storage */
 325 #define ATTR_NOT_CONTENT_INDEXED 0x2000
 326 #define ATTR_ENCRYPTED  0x4000
 327 #define ATTR_POSIX_SEMANTICS 0x01000000
 328 #define ATTR_BACKUP_SEMANTICS 0x02000000
 329 #define ATTR_DELETE_ON_CLOSE 0x04000000
 330 #define ATTR_SEQUENTIAL_SCAN 0x08000000
 331 #define ATTR_RANDOM_ACCESS   0x10000000
 332 #define ATTR_NO_BUFFERING    0x20000000
 333 #define ATTR_WRITE_THROUGH   0x80000000
 334
 335 /* ShareAccess flags */
 336 #define FILE_NO_SHARE     0x00000000
 337 #define FILE_SHARE_READ   0x00000001
 338 #define FILE_SHARE_WRITE  0x00000002
 339 #define FILE_SHARE_DELETE 0x00000004
 340 #define FILE_SHARE_ALL    0x00000007
 341
 342 /* CreateDisposition flags, similar to CreateAction as well */
 343 #define FILE_SUPERSEDE    0x00000000
 344 #define FILE_OPEN         0x00000001
 345 #define FILE_CREATE       0x00000002
 346 #define FILE_OPEN_IF      0x00000003
 347 #define FILE_OVERWRITE    0x00000004
 348 #define FILE_OVERWRITE_IF 0x00000005
 349
 350 /* CreateOptions */
 351 #define CREATE_NOT_FILE         0x00000001      /* if set must not be file */
 352 #define CREATE_WRITE_THROUGH    0x00000002
 353 #define CREATE_SEQUENTIAL       0x00000004
 354 #define CREATE_NO_BUFFER        0x00000008      /* should not buffer on srv */
 355 #define CREATE_SYNC_ALERT       0x00000010      /* MBZ */
 356 #define CREATE_ASYNC_ALERT      0x00000020      /* MBZ */
 357 #define CREATE_NOT_DIR          0x00000040    /* if set must not be directory */
 358 #define CREATE_TREE_CONNECTION  0x00000080      /* should be zero */
 359 #define CREATE_COMPLETE_IF_OPLK 0x00000100      /* should be zero */
 360 #define CREATE_NO_EA_KNOWLEDGE  0x00000200
 361 #define CREATE_EIGHT_DOT_THREE  0x00000400      /* doc says this is obsolete
 362                                                  "open for recovery" flag should
 363                                                  be zero in any case */
 364 #define CREATE_OPEN_FOR_RECOVERY 0x00000400
 365 #define CREATE_RANDOM_ACCESS    0x00000800
 366 #define CREATE_DELETE_ON_CLOSE  0x00001000
 367 #define CREATE_OPEN_BY_ID       0x00002000
 368 #define CREATE_OPEN_BACKUP_INTENT 0x00004000
 369 #define CREATE_NO_COMPRESSION   0x00008000
 370 #define CREATE_RESERVE_OPFILTER 0x00100000      /* should be zero */
 371 #define OPEN_REPARSE_POINT      0x00200000
 372 #define OPEN_NO_RECALL          0x00400000
 373 #define OPEN_FREE_SPACE_QUERY   0x00800000      /* should be zero */
 374 #define CREATE_OPTIONS_MASK     0x007FFFFF
 375 #define CREATE_OPTION_READONLY  0x10000000
 376 #define CREATE_OPTION_SPECIAL   0x20000000   /* system. NB not sent over wire */
 377
 378 /* ImpersonationLevel flags */
 379 #define SECURITY_ANONYMOUS      0
 380 #define SECURITY_IDENTIFICATION 1
 381 #define SECURITY_IMPERSONATION  2
 382 #define SECURITY_DELEGATION     3
 383
 384 /* SecurityFlags */
 385 #define SECURITY_CONTEXT_TRACKING 0x01
 386 #define SECURITY_EFFECTIVE_ONLY   0x02
 387
 388 /*
 389  * Default PID value, used in all SMBs where the PID is not important
 390  */
 391 #define CIFS_DFT_PID  0x1234
 392
 393 /*
 394  * We use the same routine for Copy and Move SMBs.  This flag is used to
 395  * distinguish
 396  */
 397 #define CIFS_COPY_OP 1
 398 #define CIFS_RENAME_OP 2
 399
 400 #define GETU16(var)  (*((__u16 *)var))  /* BB check for endian issues */
 401 #define GETU32(var)  (*((__u32 *)var))  /* BB check for endian issues */
 402
 403 struct smb_hdr {
 404         __be32 smb_buf_length;  /* BB length is only two (rarely three) bytes,
 405                 with one or two byte "type" preceding it that will be
 406                 zero - we could mask the type byte off */
 407         __u8 Protocol[4];
 408         __u8 Command;
 409         union {
 410                 struct {
 411                         __u8 ErrorClass;
 412                         __u8 Reserved;
 413                         __le16 Error;
 414                 } __attribute__((packed)) DosError;
 415                 __le32 CifsError;
 416         } __attribute__((packed)) Status;
 417         __u8 Flags;
 418         __le16 Flags2;          /* note: le */
 419         __le16 PidHigh;
 420         union {
 421                 struct {
 422                         __le32 SequenceNumber;  /* le */
 423                         __u32 Reserved; /* zero */
 424                 } __attribute__((packed)) Sequence;
 425                 __u8 SecuritySignature[8];      /* le */
 426         } __attribute__((packed)) Signature;
 427         __u8 pad[2];
 428         __u16 Tid;
 429         __le16 Pid;
 430         __u16 Uid;
 431         __le16 Mid;
 432         __u8 WordCount;
 433 } __attribute__((packed));
 434
 435 /* given a pointer to an smb_hdr, retrieve a void pointer to the ByteCount */
 436 static inline void *
 437 BCC(struct smb_hdr *smb)
 438 {
 439         return (void *)smb + sizeof(*smb) + 2 * smb->WordCount;
 440 }
 441
 442 /* given a pointer to an smb_hdr retrieve the pointer to the byte area */
 443 #define pByteArea(smb_var) (BCC(smb_var) + 2)
 444
 445 /* get the unconverted ByteCount for a SMB packet and return it */
 446 static inline __u16
 447 get_bcc(struct smb_hdr *hdr)
 448 {
 449         __le16 *bc_ptr = (__le16 *)BCC(hdr);
 450
 451         return get_unaligned_le16(bc_ptr);
 452 }
 453
 454 /* set the ByteCount for a SMB packet in little-endian */
 455 static inline void
 456 put_bcc(__u16 count, struct smb_hdr *hdr)
 457 {
 458         __le16 *bc_ptr = (__le16 *)BCC(hdr);
 459
 460         put_unaligned_le16(count, bc_ptr);
 461 }
 462
 463 /*
 464  * Computer Name Length (since Netbios name was length 16 with last byte 0x20)
 465  * No longer as important, now that TCP names are more commonly used to
 466  * resolve hosts.
 467  */
 468 #define CNLEN 15
 469
 470 /*
 471  * Share Name Length (SNLEN)
 472  * Note:  This length was limited by the SMB used to get
 473  *        the Share info.   NetShareEnum only returned 13
 474  *        chars, including the null termination.
 475  * This was removed because it no longer is limiting.
 476  */
 477
 478 /*
 479  * Comment Length
 480  */
 481 #define MAXCOMMENTLEN 40
 482
 483 /*
 484  * The OS/2 maximum path name
 485  */
 486 #define MAX_PATHCONF 256
 487
 488 /*
 489  *  SMB frame definitions  (following must be packed structs)
 490  *  See the SNIA CIFS Specification for details.
 491  *
 492  *  The Naming convention is the lower case version of the
 493  *  smb command code name for the struct and this is typedef to the
 494  *  uppercase version of the same name with the prefix SMB_ removed
 495  *  for brevity.  Although typedefs are not commonly used for
 496  *  structure definitions in the Linux kernel, their use in the
 497  *  CIFS standards document, which this code is based on, may
 498  *  make this one of the cases where typedefs for structures make
 499  *  sense to improve readability for readers of the standards doc.
 500  *  Typedefs can always be removed later if they are too distracting
 501  *  and they are only used for the CIFSs PDUs themselves, not
 502  *  internal cifs vfs structures
 503  *
 504  */
 505
 506 typedef struct negotiate_req {
 507         struct smb_hdr hdr;     /* wct = 0 */
 508         __le16 ByteCount;
 509         unsigned char DialectsArray[1];
 510 } __attribute__((packed)) NEGOTIATE_REQ;
 511
 512 /* Dialect index is 13 for LANMAN */
 513
 514 #define MIN_TZ_ADJ (15 * 60) /* minimum grid for timezones in seconds */
 515
 516 typedef struct lanman_neg_rsp {
 517         struct smb_hdr hdr;     /* wct = 13 */
 518         __le16 DialectIndex;
 519         __le16 SecurityMode;
 520         __le16 MaxBufSize;
 521         __le16 MaxMpxCount;
 522         __le16 MaxNumberVcs;
 523         __le16 RawMode;
 524         __le32 SessionKey;
 525         struct {
 526                 __le16 Time;
 527                 __le16 Date;
 528         } __attribute__((packed)) SrvTime;
 529         __le16 ServerTimeZone;
 530         __le16 EncryptionKeyLength;
 531         __le16 Reserved;
 532         __u16  ByteCount;
 533         unsigned char EncryptionKey[1];
 534 } __attribute__((packed)) LANMAN_NEG_RSP;
 535
 536 #define READ_RAW_ENABLE 1
 537 #define WRITE_RAW_ENABLE 2
 538 #define RAW_ENABLE (READ_RAW_ENABLE | WRITE_RAW_ENABLE)
 539 #define SMB1_CLIENT_GUID_SIZE (16)
 540 typedef struct negotiate_rsp {
 541         struct smb_hdr hdr;     /* wct = 17 */
 542         __le16 DialectIndex; /* 0xFFFF = no dialect acceptable */
 543         __u8 SecurityMode;
 544         __le16 MaxMpxCount;
 545         __le16 MaxNumberVcs;
 546         __le32 MaxBufferSize;
 547         __le32 MaxRawSize;
 548         __le32 SessionKey;
 549         __le32 Capabilities;    /* see below */
 550         __le32 SystemTimeLow;
 551         __le32 SystemTimeHigh;
 552         __le16 ServerTimeZone;
 553         __u8 EncryptionKeyLength;
 554         __u16 ByteCount;
 555         union {
 556                 unsigned char EncryptionKey[1]; /* cap extended security off */
 557                 /* followed by Domain name - if extended security is off */
 558                 /* followed by 16 bytes of server GUID */
 559                 /* then security blob if cap_extended_security negotiated */
 560                 struct {
 561                         unsigned char GUID[SMB1_CLIENT_GUID_SIZE];
 562                         unsigned char SecurityBlob[1];
 563                 } __attribute__((packed)) extended_response;
 564         } __attribute__((packed)) u;
 565 } __attribute__((packed)) NEGOTIATE_RSP;
 566
 567 /* SecurityMode bits */
 568 #define SECMODE_USER          0x01      /* off indicates share level security */
 569 #define SECMODE_PW_ENCRYPT    0x02
 570 #define SECMODE_SIGN_ENABLED  0x04      /* SMB security signatures enabled */
 571 #define SECMODE_SIGN_REQUIRED 0x08      /* SMB security signatures required */
 572
 573 /* Negotiate response Capabilities */
 574 #define CAP_RAW_MODE           0x00000001
 575 #define CAP_MPX_MODE           0x00000002
 576 #define CAP_UNICODE            0x00000004
 577 #define CAP_LARGE_FILES        0x00000008
 578 #define CAP_NT_SMBS            0x00000010       /* implies CAP_NT_FIND */
 579 #define CAP_RPC_REMOTE_APIS    0x00000020
 580 #define CAP_STATUS32           0x00000040
 581 #define CAP_LEVEL_II_OPLOCKS   0x00000080
 582 #define CAP_LOCK_AND_READ      0x00000100
 583 #define CAP_NT_FIND            0x00000200
 584 #define CAP_DFS                0x00001000
 585 #define CAP_INFOLEVEL_PASSTHRU 0x00002000
 586 #define CAP_LARGE_READ_X       0x00004000
 587 #define CAP_LARGE_WRITE_X      0x00008000
 588 #define CAP_LWIO               0x00010000 /* support fctl_srv_req_resume_key */
 589 #define CAP_UNIX               0x00800000
 590 #define CAP_COMPRESSED_DATA    0x02000000
 591 #define CAP_DYNAMIC_REAUTH     0x20000000
 592 #define CAP_PERSISTENT_HANDLES 0x40000000
 593 #define CAP_EXTENDED_SECURITY  0x80000000
 594
 595 typedef union smb_com_session_setup_andx {
 596         struct {                /* request format */
 597                 struct smb_hdr hdr;     /* wct = 12 */
 598                 __u8 AndXCommand;
 599                 __u8 AndXReserved;
 600                 __le16 AndXOffset;
 601                 __le16 MaxBufferSize;
 602                 __le16 MaxMpxCount;
 603                 __le16 VcNumber;
 604                 __u32 SessionKey;
 605                 __le16 SecurityBlobLength;
 606                 __u32 Reserved;
 607                 __le32 Capabilities;    /* see below */
 608                 __le16 ByteCount;
 609                 unsigned char SecurityBlob[1];  /* followed by */
 610                 /* STRING NativeOS */
 611                 /* STRING NativeLanMan */
 612         } __attribute__((packed)) req;  /* NTLM request format (with
 613                                         extended security */
 614
 615         struct {                /* request format */
 616                 struct smb_hdr hdr;     /* wct = 13 */
 617                 __u8 AndXCommand;
 618                 __u8 AndXReserved;
 619                 __le16 AndXOffset;
 620                 __le16 MaxBufferSize;
 621                 __le16 MaxMpxCount;
 622                 __le16 VcNumber;
 623                 __u32 SessionKey;
 624                 __le16 CaseInsensitivePasswordLength; /* ASCII password len */
 625                 __le16 CaseSensitivePasswordLength; /* Unicode password length*/
 626                 __u32 Reserved; /* see below */
 627                 __le32 Capabilities;
 628                 __le16 ByteCount;
 629                 unsigned char CaseInsensitivePassword[1];     /* followed by: */
 630                 /* unsigned char * CaseSensitivePassword; */
 631                 /* STRING AccountName */
 632                 /* STRING PrimaryDomain */
 633                 /* STRING NativeOS */
 634                 /* STRING NativeLanMan */
 635         } __attribute__((packed)) req_no_secext; /* NTLM request format (without
 636                                                         extended security */
 637
 638         struct {                /* default (NTLM) response format */
 639                 struct smb_hdr hdr;     /* wct = 4 */
 640                 __u8 AndXCommand;
 641                 __u8 AndXReserved;
 642                 __le16 AndXOffset;
 643                 __le16 Action;  /* see below */
 644                 __le16 SecurityBlobLength;
 645                 __u16 ByteCount;
 646                 unsigned char SecurityBlob[1];  /* followed by */
 647 /*      unsigned char  * NativeOS;      */
 648 /*      unsigned char  * NativeLanMan;  */
 649 /*      unsigned char  * PrimaryDomain; */
 650         } __attribute__((packed)) resp; /* NTLM response
 651                                            (with or without extended sec) */
 652
 653         struct {                /* request format */
 654                 struct smb_hdr hdr;     /* wct = 10 */
 655                 __u8 AndXCommand;
 656                 __u8 AndXReserved;
 657                 __le16 AndXOffset;
 658                 __le16 MaxBufferSize;
 659                 __le16 MaxMpxCount;
 660                 __le16 VcNumber;
 661                 __u32 SessionKey;
 662                 __le16 PasswordLength;
 663                 __u32 Reserved; /* encrypt key len and offset */
 664                 __le16 ByteCount;
 665                 unsigned char AccountPassword[1];       /* followed by */
 666                 /* STRING AccountName */
 667                 /* STRING PrimaryDomain */
 668                 /* STRING NativeOS */
 669                 /* STRING NativeLanMan */
 670         } __attribute__((packed)) old_req; /* pre-NTLM (LANMAN2.1) req format */
 671
 672         struct {                /* default (NTLM) response format */
 673                 struct smb_hdr hdr;     /* wct = 3 */
 674                 __u8 AndXCommand;
 675                 __u8 AndXReserved;
 676                 __le16 AndXOffset;
 677                 __le16 Action;  /* see below */
 678                 __u16 ByteCount;
 679                 unsigned char NativeOS[1];      /* followed by */
 680 /*      unsigned char * NativeLanMan; */
 681 /*      unsigned char * PrimaryDomain; */
 682         } __attribute__((packed)) old_resp; /* pre-NTLM (LANMAN2.1) response */
 683 } __attribute__((packed)) SESSION_SETUP_ANDX;
 684
 685 /* format of NLTMv2 Response ie "case sensitive password" hash when NTLMv2 */
 686
 687 #define NTLMSSP_SERVER_TYPE     1
 688 #define NTLMSSP_DOMAIN_TYPE     2
 689 #define NTLMSSP_FQ_DOMAIN_TYPE  3
 690 #define NTLMSSP_DNS_DOMAIN_TYPE 4
 691 #define NTLMSSP_DNS_PARENT_TYPE 5
 692
 693 struct ntlmssp2_name {
 694         __le16 type;
 695         __le16 length;
 696 /*      char   name[length]; */
 697 } __attribute__((packed));
 698
 699 struct ntlmv2_resp {
 700         union {
 701             char ntlmv2_hash[CIFS_ENCPWD_SIZE];
 702             struct {
 703                 __u8 reserved[8];
 704                 __u8 key[CIFS_SERVER_CHALLENGE_SIZE];
 705             } __attribute__((packed)) challenge;
 706         } __attribute__((packed));
 707         __le32 blob_signature;
 708         __u32  reserved;
 709         __le64  time;
 710         __u64  client_chal; /* random */
 711         __u32  reserved2;
 712         /* array of name entries could follow ending in minimum 4 byte struct */
 713 } __attribute__((packed));
 714
 715
 716 #define CIFS_NETWORK_OPSYS "CIFS VFS Client for Linux"
 717
 718 /* Capabilities bits (for NTLM SessSetup request) */
 719 #define CAP_UNICODE            0x00000004
 720 #define CAP_LARGE_FILES        0x00000008
 721 #define CAP_NT_SMBS            0x00000010
 722 #define CAP_STATUS32           0x00000040
 723 #define CAP_LEVEL_II_OPLOCKS   0x00000080
 724 #define CAP_NT_FIND            0x00000200       /* reserved should be zero
 725                                 (because NT_SMBs implies the same thing?) */
 726 #define CAP_BULK_TRANSFER      0x20000000
 727 #define CAP_EXTENDED_SECURITY  0x80000000
 728
 729 /* Action bits */
 730 #define GUEST_LOGIN 1
 731
 732 typedef struct smb_com_tconx_req {
 733         struct smb_hdr hdr;     /* wct = 4 */
 734         __u8 AndXCommand;
 735         __u8 AndXReserved;
 736         __le16 AndXOffset;
 737         __le16 Flags;           /* see below */
 738         __le16 PasswordLength;
 739         __le16 ByteCount;
 740         unsigned char Password[1];      /* followed by */
 741 /* STRING Path    *//* \\server\share name */
 742         /* STRING Service */
 743 } __attribute__((packed)) TCONX_REQ;
 744
 745 typedef struct smb_com_tconx_rsp {
 746         struct smb_hdr hdr;     /* wct = 3 , not extended response */
 747         __u8 AndXCommand;
 748         __u8 AndXReserved;
 749         __le16 AndXOffset;
 750         __le16 OptionalSupport; /* see below */
 751         __u16 ByteCount;
 752         unsigned char Service[1];       /* always ASCII, not Unicode */
 753         /* STRING NativeFileSystem */
 754 } __attribute__((packed)) TCONX_RSP;
 755
 756 typedef struct smb_com_tconx_rsp_ext {
 757         struct smb_hdr hdr;     /* wct = 7, extended response */
 758         __u8 AndXCommand;
 759         __u8 AndXReserved;
 760         __le16 AndXOffset;
 761         __le16 OptionalSupport; /* see below */
 762         __le32 MaximalShareAccessRights;
 763         __le32 GuestMaximalShareAccessRights;
 764         __u16 ByteCount;
 765         unsigned char Service[1];       /* always ASCII, not Unicode */
 766         /* STRING NativeFileSystem */
 767 } __attribute__((packed)) TCONX_RSP_EXT;
 768
 769
 770 /* tree connect Flags */
 771 #define DISCONNECT_TID          0x0001
 772 #define TCON_EXTENDED_SIGNATURES 0x0004
 773 #define TCON_EXTENDED_SECINFO   0x0008
 774
 775 /* OptionalSupport bits */
 776 #define SMB_SUPPORT_SEARCH_BITS 0x0001  /* "must have" directory search bits
 777                                          (exclusive searches supported) */
 778 #define SMB_SHARE_IS_IN_DFS     0x0002
 779 #define SMB_CSC_MASK               0x000C
 780 /* CSC flags defined as follows */
 781 #define SMB_CSC_CACHE_MANUAL_REINT 0x0000
 782 #define SMB_CSC_CACHE_AUTO_REINT   0x0004
 783 #define SMB_CSC_CACHE_VDO          0x0008
 784 #define SMB_CSC_NO_CACHING         0x000C
 785 #define SMB_UNIQUE_FILE_NAME    0x0010
 786 #define SMB_EXTENDED_SIGNATURES 0x0020
 787
 788 /* services
 789  *
 790  * A:       ie disk
 791  * LPT1:    ie printer
 792  * IPC      ie named pipe
 793  * COMM
 794  * ?????    ie any type
 795  *
 796  */
 797
 798 typedef struct smb_com_echo_req {
 799         struct  smb_hdr hdr;
 800         __le16  EchoCount;
 801         __le16  ByteCount;
 802         char    Data[1];
 803 } __attribute__((packed)) ECHO_REQ;
 804
 805 typedef struct smb_com_echo_rsp {
 806         struct  smb_hdr hdr;
 807         __le16  SequenceNumber;
 808         __le16  ByteCount;
 809         char    Data[1];
 810 } __attribute__((packed)) ECHO_RSP;
 811
 812 typedef struct smb_com_logoff_andx_req {
 813         struct smb_hdr hdr;     /* wct = 2 */
 814         __u8 AndXCommand;
 815         __u8 AndXReserved;
 816         __u16 AndXOffset;
 817         __u16 ByteCount;
 818 } __attribute__((packed)) LOGOFF_ANDX_REQ;
 819
 820 typedef struct smb_com_logoff_andx_rsp {
 821         struct smb_hdr hdr;     /* wct = 2 */
 822         __u8 AndXCommand;
 823         __u8 AndXReserved;
 824         __u16 AndXOffset;
 825         __u16 ByteCount;
 826 } __attribute__((packed)) LOGOFF_ANDX_RSP;
 827
 828 typedef union smb_com_tree_disconnect { /* as an altetnative can use flag on
 829                                         tree_connect PDU to effect disconnect */
 830                                         /* tdis is probably simplest SMB PDU */
 831         struct {
 832                 struct smb_hdr hdr;     /* wct = 0 */
 833                 __u16 ByteCount;        /* bcc = 0 */
 834         } __attribute__((packed)) req;
 835         struct {
 836                 struct smb_hdr hdr;     /* wct = 0 */
 837                 __u16 ByteCount;        /* bcc = 0 */
 838         } __attribute__((packed)) resp;
 839 } __attribute__((packed)) TREE_DISCONNECT;
 840
 841 typedef struct smb_com_close_req {
 842         struct smb_hdr hdr;     /* wct = 3 */
 843         __u16 FileID;
 844         __u32 LastWriteTime;    /* should be zero or -1 */
 845         __u16 ByteCount;        /* 0 */
 846 } __attribute__((packed)) CLOSE_REQ;
 847
 848 typedef struct smb_com_close_rsp {
 849         struct smb_hdr hdr;     /* wct = 0 */
 850         __u16 ByteCount;        /* bct = 0 */
 851 } __attribute__((packed)) CLOSE_RSP;
 852
 853 typedef struct smb_com_flush_req {
 854         struct smb_hdr hdr;     /* wct = 1 */
 855         __u16 FileID;
 856         __u16 ByteCount;        /* 0 */
 857 } __attribute__((packed)) FLUSH_REQ;
 858
 859 typedef struct smb_com_findclose_req {
 860         struct smb_hdr hdr; /* wct = 1 */
 861         __u16 FileID;
 862         __u16 ByteCount;    /* 0 */
 863 } __attribute__((packed)) FINDCLOSE_REQ;
 864
 865 /* OpenFlags */
 866 #define REQ_MORE_INFO      0x00000001  /* legacy (OPEN_AND_X) only */
 867 #define REQ_OPLOCK         0x00000002
 868 #define REQ_BATCHOPLOCK    0x00000004
 869 #define REQ_OPENDIRONLY    0x00000008
 870 #define REQ_EXTENDED_INFO  0x00000010
 871
 872 /* File type */
 873 #define DISK_TYPE               0x0000
 874 #define BYTE_PIPE_TYPE          0x0001
 875 #define MESSAGE_PIPE_TYPE       0x0002
 876 #define PRINTER_TYPE            0x0003
 877 #define COMM_DEV_TYPE           0x0004
 878 #define UNKNOWN_TYPE            0xFFFF
 879
 880 /* Device Type or File Status Flags */
 881 #define NO_EAS                  0x0001
 882 #define NO_SUBSTREAMS           0x0002
 883 #define NO_REPARSETAG           0x0004
 884 /* following flags can apply if pipe */
 885 #define ICOUNT_MASK             0x00FF
 886 #define PIPE_READ_MODE          0x0100
 887 #define NAMED_PIPE_TYPE         0x0400
 888 #define PIPE_END_POINT          0x4000
 889 #define BLOCKING_NAMED_PIPE     0x8000
 890
 891 typedef struct smb_com_open_req {       /* also handles create */
 892         struct smb_hdr hdr;     /* wct = 24 */
 893         __u8 AndXCommand;
 894         __u8 AndXReserved;
 895         __le16 AndXOffset;
 896         __u8 Reserved;          /* Must Be Zero */
 897         __le16 NameLength;
 898         __le32 OpenFlags;
 899         __u32  RootDirectoryFid;
 900         __le32 DesiredAccess;
 901         __le64 AllocationSize;
 902         __le32 FileAttributes;
 903         __le32 ShareAccess;
 904         __le32 CreateDisposition;
 905         __le32 CreateOptions;
 906         __le32 ImpersonationLevel;
 907         __u8 SecurityFlags;
 908         __le16 ByteCount;
 909         char fileName[1];
 910 } __attribute__((packed)) OPEN_REQ;
 911
 912 /* open response: oplock levels */
 913 #define OPLOCK_NONE      0
 914 #define OPLOCK_EXCLUSIVE 1
 915 #define OPLOCK_BATCH     2
 916 #define OPLOCK_READ      3  /* level 2 oplock */
 917
 918 /* open response for CreateAction shifted left */
 919 #define CIFS_CREATE_ACTION 0x20000 /* file created */
 920
 921 typedef struct smb_com_open_rsp {
 922         struct smb_hdr hdr;     /* wct = 34 BB */
 923         __u8 AndXCommand;
 924         __u8 AndXReserved;
 925         __le16 AndXOffset;
 926         __u8 OplockLevel;
 927         __u16 Fid;
 928         __le32 CreateAction;
 929         __le64 CreationTime;
 930         __le64 LastAccessTime;
 931         __le64 LastWriteTime;
 932         __le64 ChangeTime;
 933         __le32 FileAttributes;
 934         __le64 AllocationSize;
 935         __le64 EndOfFile;
 936         __le16 FileType;
 937         __le16 DeviceState;
 938         __u8 DirectoryFlag;
 939         __u16 ByteCount;        /* bct = 0 */
 940 } __attribute__((packed)) OPEN_RSP;
 941
 942 typedef struct smb_com_open_rsp_ext {
 943         struct smb_hdr hdr;     /* wct = 42 but meaningless due to MS bug? */
 944         __u8 AndXCommand;
 945         __u8 AndXReserved;
 946         __le16 AndXOffset;
 947         __u8 OplockLevel;
 948         __u16 Fid;
 949         __le32 CreateAction;
 950         __le64 CreationTime;
 951         __le64 LastAccessTime;
 952         __le64 LastWriteTime;
 953         __le64 ChangeTime;
 954         __le32 FileAttributes;
 955         __le64 AllocationSize;
 956         __le64 EndOfFile;
 957         __le16 FileType;
 958         __le16 DeviceState;
 959         __u8 DirectoryFlag;
 960         __u8 VolumeGUID[16];
 961         __u64 FileId; /* note no endian conversion - is opaque UniqueID */
 962         __le32 MaximalAccessRights;
 963         __le32 GuestMaximalAccessRights;
 964         __u16 ByteCount;        /* bct = 0 */
 965 } __attribute__((packed)) OPEN_RSP_EXT;
 966
 967
 968 /* format of legacy open request */
 969 typedef struct smb_com_openx_req {
 970         struct smb_hdr  hdr;    /* wct = 15 */
 971         __u8 AndXCommand;
 972         __u8 AndXReserved;
 973         __le16 AndXOffset;
 974         __le16 OpenFlags;
 975         __le16 Mode;
 976         __le16 Sattr; /* search attributes */
 977         __le16 FileAttributes;  /* dos attrs */
 978         __le32 CreateTime; /* os2 format */
 979         __le16 OpenFunction;
 980         __le32 EndOfFile;
 981         __le32 Timeout;
 982         __le32 Reserved;
 983         __le16  ByteCount;  /* file name follows */
 984         char   fileName[1];
 985 } __attribute__((packed)) OPENX_REQ;
 986
 987 typedef struct smb_com_openx_rsp {
 988         struct smb_hdr  hdr;    /* wct = 15 */
 989         __u8 AndXCommand;
 990         __u8 AndXReserved;
 991         __le16 AndXOffset;
 992         __u16  Fid;
 993         __le16 FileAttributes;
 994         __le32 LastWriteTime; /* os2 format */
 995         __le32 EndOfFile;
 996         __le16 Access;
 997         __le16 FileType;
 998         __le16 IPCState;
 999         __le16 Action;
1000         __u32  FileId;
1001         __u16  Reserved;
1002         __u16  ByteCount;
1003 } __attribute__((packed)) OPENX_RSP;
1004
1005 /* For encoding of POSIX Open Request - see trans2 function 0x209 data struct */
1006
1007 /* Legacy write request for older servers */
1008 typedef struct smb_com_writex_req {
1009         struct smb_hdr hdr;     /* wct = 12 */
1010         __u8 AndXCommand;
1011         __u8 AndXReserved;
1012         __le16 AndXOffset;
1013         __u16 Fid;
1014         __le32 OffsetLow;
1015         __u32 Reserved; /* Timeout */
1016         __le16 WriteMode; /* 1 = write through */
1017         __le16 Remaining;
1018         __le16 Reserved2;
1019         __le16 DataLengthLow;
1020         __le16 DataOffset;
1021         __le16 ByteCount;
1022         __u8 Pad;               /* BB check for whether padded to DWORD
1023                                    boundary and optimum performance here */
1024         char Data[0];
1025 } __attribute__((packed)) WRITEX_REQ;
1026
1027 typedef struct smb_com_write_req {
1028         struct smb_hdr hdr;     /* wct = 14 */
1029         __u8 AndXCommand;
1030         __u8 AndXReserved;
1031         __le16 AndXOffset;
1032         __u16 Fid;
1033         __le32 OffsetLow;
1034         __u32 Reserved;
1035         __le16 WriteMode;
1036         __le16 Remaining;
1037         __le16 DataLengthHigh;
1038         __le16 DataLengthLow;
1039         __le16 DataOffset;
1040         __le32 OffsetHigh;
1041         __le16 ByteCount;
1042         __u8 Pad;               /* BB check for whether padded to DWORD
1043                                    boundary and optimum performance here */
1044         char Data[0];
1045 } __attribute__((packed)) WRITE_REQ;
1046
1047 typedef struct smb_com_write_rsp {
1048         struct smb_hdr hdr;     /* wct = 6 */
1049         __u8 AndXCommand;
1050         __u8 AndXReserved;
1051         __le16 AndXOffset;
1052         __le16 Count;
1053         __le16 Remaining;
1054         __le16 CountHigh;
1055         __u16  Reserved;
1056         __u16 ByteCount;
1057 } __attribute__((packed)) WRITE_RSP;
1058
1059 /* legacy read request for older servers */
1060 typedef struct smb_com_readx_req {
1061         struct smb_hdr hdr;     /* wct = 10 */
1062         __u8 AndXCommand;
1063         __u8 AndXReserved;
1064         __le16 AndXOffset;
1065         __u16 Fid;
1066         __le32 OffsetLow;
1067         __le16 MaxCount;
1068         __le16 MinCount;        /* obsolete */
1069         __le32 Reserved;
1070         __le16 Remaining;
1071         __le16 ByteCount;
1072 } __attribute__((packed)) READX_REQ;
1073
1074 typedef struct smb_com_read_req {
1075         struct smb_hdr hdr;     /* wct = 12 */
1076         __u8 AndXCommand;
1077         __u8 AndXReserved;
1078         __le16 AndXOffset;
1079         __u16 Fid;
1080         __le32 OffsetLow;
1081         __le16 MaxCount;
1082         __le16 MinCount;                /* obsolete */
1083         __le32 MaxCountHigh;
1084         __le16 Remaining;
1085         __le32 OffsetHigh;
1086         __le16 ByteCount;
1087 } __attribute__((packed)) READ_REQ;
1088
1089 typedef struct smb_com_read_rsp {
1090         struct smb_hdr hdr;     /* wct = 12 */
1091         __u8 AndXCommand;
1092         __u8 AndXReserved;
1093         __le16 AndXOffset;
1094         __le16 Remaining;
1095         __le16 DataCompactionMode;
1096         __le16 Reserved;
1097         __le16 DataLength;
1098         __le16 DataOffset;
1099         __le16 DataLengthHigh;
1100         __u64 Reserved2;
1101         __u16 ByteCount;
1102         /* read response data immediately follows */
1103 } __attribute__((packed)) READ_RSP;
1104
1105 typedef struct locking_andx_range {
1106         __le16 Pid;
1107         __le16 Pad;
1108         __le32 OffsetHigh;
1109         __le32 OffsetLow;
1110         __le32 LengthHigh;
1111         __le32 LengthLow;
1112 } __attribute__((packed)) LOCKING_ANDX_RANGE;
1113
1114 #define LOCKING_ANDX_SHARED_LOCK     0x01
1115 #define LOCKING_ANDX_OPLOCK_RELEASE  0x02
1116 #define LOCKING_ANDX_CHANGE_LOCKTYPE 0x04
1117 #define LOCKING_ANDX_CANCEL_LOCK     0x08
1118 #define LOCKING_ANDX_LARGE_FILES     0x10       /* always on for us */
1119
1120 typedef struct smb_com_lock_req {
1121         struct smb_hdr hdr;     /* wct = 8 */
1122         __u8 AndXCommand;
1123         __u8 AndXReserved;
1124         __le16 AndXOffset;
1125         __u16 Fid;
1126         __u8 LockType;
1127         __u8 OplockLevel;
1128         __le32 Timeout;
1129         __le16 NumberOfUnlocks;
1130         __le16 NumberOfLocks;
1131         __le16 ByteCount;
1132         LOCKING_ANDX_RANGE Locks[1];
1133 } __attribute__((packed)) LOCK_REQ;
1134
1135 /* lock type */
1136 #define CIFS_RDLCK      0
1137 #define CIFS_WRLCK      1
1138 #define CIFS_UNLCK      2
1139 typedef struct cifs_posix_lock {
1140         __le16  lock_type;  /* 0 = Read, 1 = Write, 2 = Unlock */
1141         __le16  lock_flags; /* 1 = Wait (only valid for setlock) */
1142         __le32  pid;
1143         __le64  start;
1144         __le64  length;
1145         /* BB what about additional owner info to identify network client */
1146 } __attribute__((packed)) CIFS_POSIX_LOCK;
1147
1148 typedef struct smb_com_lock_rsp {
1149         struct smb_hdr hdr;     /* wct = 2 */
1150         __u8 AndXCommand;
1151         __u8 AndXReserved;
1152         __le16 AndXOffset;
1153         __u16 ByteCount;
1154 } __attribute__((packed)) LOCK_RSP;
1155
1156 typedef struct smb_com_rename_req {
1157         struct smb_hdr hdr;     /* wct = 1 */
1158         __le16 SearchAttributes;        /* target file attributes */
1159         __le16 ByteCount;
1160         __u8 BufferFormat;      /* 4 = ASCII or Unicode */
1161         unsigned char OldFileName[1];
1162         /* followed by __u8 BufferFormat2 */
1163         /* followed by NewFileName */
1164 } __attribute__((packed)) RENAME_REQ;
1165
1166         /* copy request flags */
1167 #define COPY_MUST_BE_FILE      0x0001
1168 #define COPY_MUST_BE_DIR       0x0002
1169 #define COPY_TARGET_MODE_ASCII 0x0004 /* if not set, binary */
1170 #define COPY_SOURCE_MODE_ASCII 0x0008 /* if not set, binary */
1171 #define COPY_VERIFY_WRITES     0x0010
1172 #define COPY_TREE              0x0020
1173
1174 typedef struct smb_com_copy_req {
1175         struct smb_hdr hdr;     /* wct = 3 */
1176         __u16 Tid2;
1177         __le16 OpenFunction;
1178         __le16 Flags;
1179         __le16 ByteCount;
1180         __u8 BufferFormat;      /* 4 = ASCII or Unicode */
1181         unsigned char OldFileName[1];
1182         /* followed by __u8 BufferFormat2 */
1183         /* followed by NewFileName string */
1184 } __attribute__((packed)) COPY_REQ;
1185
1186 typedef struct smb_com_copy_rsp {
1187         struct smb_hdr hdr;     /* wct = 1 */
1188         __le16 CopyCount;    /* number of files copied */
1189         __u16 ByteCount;    /* may be zero */
1190         __u8 BufferFormat;  /* 0x04 - only present if errored file follows */
1191         unsigned char ErrorFileName[1]; /* only present if error in copy */
1192 } __attribute__((packed)) COPY_RSP;
1193
1194 #define CREATE_HARD_LINK                0x103
1195 #define MOVEFILE_COPY_ALLOWED           0x0002
1196 #define MOVEFILE_REPLACE_EXISTING       0x0001
1197
1198 typedef struct smb_com_nt_rename_req {  /* A5 - also used for create hardlink */
1199         struct smb_hdr hdr;     /* wct = 4 */
1200         __le16 SearchAttributes;        /* target file attributes */
1201         __le16 Flags;           /* spec says Information Level */
1202         __le32 ClusterCount;
1203         __le16 ByteCount;
1204         __u8 BufferFormat;      /* 4 = ASCII or Unicode */
1205         unsigned char OldFileName[1];
1206         /* followed by __u8 BufferFormat2 */
1207         /* followed by NewFileName */
1208 } __attribute__((packed)) NT_RENAME_REQ;
1209
1210 typedef struct smb_com_rename_rsp {
1211         struct smb_hdr hdr;     /* wct = 0 */
1212         __u16 ByteCount;        /* bct = 0 */
1213 } __attribute__((packed)) RENAME_RSP;
1214
1215 typedef struct smb_com_delete_file_req {
1216         struct smb_hdr hdr;     /* wct = 1 */
1217         __le16 SearchAttributes;
1218         __le16 ByteCount;
1219         __u8 BufferFormat;      /* 4 = ASCII */
1220         unsigned char fileName[1];
1221 } __attribute__((packed)) DELETE_FILE_REQ;
1222
1223 typedef struct smb_com_delete_file_rsp {
1224         struct smb_hdr hdr;     /* wct = 0 */
1225         __u16 ByteCount;        /* bct = 0 */
1226 } __attribute__((packed)) DELETE_FILE_RSP;
1227
1228 typedef struct smb_com_delete_directory_req {
1229         struct smb_hdr hdr;     /* wct = 0 */
1230         __le16 ByteCount;
1231         __u8 BufferFormat;      /* 4 = ASCII */
1232         unsigned char DirName[1];
1233 } __attribute__((packed)) DELETE_DIRECTORY_REQ;
1234
1235 typedef struct smb_com_delete_directory_rsp {
1236         struct smb_hdr hdr;     /* wct = 0 */
1237         __u16 ByteCount;        /* bct = 0 */
1238 } __attribute__((packed)) DELETE_DIRECTORY_RSP;
1239
1240 typedef struct smb_com_create_directory_req {
1241         struct smb_hdr hdr;     /* wct = 0 */
1242         __le16 ByteCount;
1243         __u8 BufferFormat;      /* 4 = ASCII */
1244         unsigned char DirName[1];
1245 } __attribute__((packed)) CREATE_DIRECTORY_REQ;
1246
1247 typedef struct smb_com_create_directory_rsp {
1248         struct smb_hdr hdr;     /* wct = 0 */
1249         __u16 ByteCount;        /* bct = 0 */
1250 } __attribute__((packed)) CREATE_DIRECTORY_RSP;
1251
1252 typedef struct smb_com_query_information_req {
1253         struct smb_hdr hdr;     /* wct = 0 */
1254         __le16 ByteCount;       /* 1 + namelen + 1 */
1255         __u8 BufferFormat;      /* 4 = ASCII */
1256         unsigned char FileName[1];
1257 } __attribute__((packed)) QUERY_INFORMATION_REQ;
1258
1259 typedef struct smb_com_query_information_rsp {
1260         struct smb_hdr hdr;     /* wct = 10 */
1261         __le16 attr;
1262         __le32  last_write_time;
1263         __le32 size;
1264         __u16  reserved[5];
1265         __le16 ByteCount;       /* bcc = 0 */
1266 } __attribute__((packed)) QUERY_INFORMATION_RSP;
1267
1268 typedef struct smb_com_setattr_req {
1269         struct smb_hdr hdr; /* wct = 8 */
1270         __le16 attr;
1271         __le16 time_low;
1272         __le16 time_high;
1273         __le16 reserved[5]; /* must be zero */
1274         __u16  ByteCount;
1275         __u8   BufferFormat; /* 4 = ASCII */
1276         unsigned char fileName[1];
1277 } __attribute__((packed)) SETATTR_REQ;
1278
1279 typedef struct smb_com_setattr_rsp {
1280         struct smb_hdr hdr;     /* wct = 0 */
1281         __u16 ByteCount;        /* bct = 0 */
1282 } __attribute__((packed)) SETATTR_RSP;
1283
1284 /* empty wct response to setattr */
1285
1286 /*******************************************************/
1287 /* NT Transact structure definitions follow            */
1288 /* Currently only ioctl, acl (get security descriptor) */
1289 /* and notify are implemented                          */
1290 /*******************************************************/
1291 typedef struct smb_com_ntransact_req {
1292         struct smb_hdr hdr; /* wct >= 19 */
1293         __u8 MaxSetupCount;
1294         __u16 Reserved;
1295         __le32 TotalParameterCount;
1296         __le32 TotalDataCount;
1297         __le32 MaxParameterCount;
1298         __le32 MaxDataCount;
1299         __le32 ParameterCount;
1300         __le32 ParameterOffset;
1301         __le32 DataCount;
1302         __le32 DataOffset;
1303         __u8 SetupCount; /* four setup words follow subcommand */
1304         /* SNIA spec incorrectly included spurious pad here */
1305         __le16 SubCommand; /* 2 = IOCTL/FSCTL */
1306         /* SetupCount words follow then */
1307         __le16 ByteCount;
1308         __u8 Pad[3];
1309         __u8 Parms[0];
1310 } __attribute__((packed)) NTRANSACT_REQ;
1311
1312 typedef struct smb_com_ntransact_rsp {
1313         struct smb_hdr hdr;     /* wct = 18 */
1314         __u8 Reserved[3];
1315         __le32 TotalParameterCount;
1316         __le32 TotalDataCount;
1317         __le32 ParameterCount;
1318         __le32 ParameterOffset;
1319         __le32 ParameterDisplacement;
1320         __le32 DataCount;
1321         __le32 DataOffset;
1322         __le32 DataDisplacement;
1323         __u8 SetupCount;   /* 0 */
1324         __u16 ByteCount;
1325         /* __u8 Pad[3]; */
1326         /* parms and data follow */
1327 } __attribute__((packed)) NTRANSACT_RSP;
1328
1329 /* See MS-SMB 2.2.7.2.1.1 */
1330 struct srv_copychunk {
1331         __le64 SourceOffset;
1332         __le64 DestinationOffset;
1333         __le32 CopyLength;
1334         __u32  Reserved;
1335 } __packed;
1336
1337 typedef struct smb_com_transaction_ioctl_req {
1338         struct smb_hdr hdr;     /* wct = 23 */
1339         __u8 MaxSetupCount;
1340         __u16 Reserved;
1341         __le32 TotalParameterCount;
1342         __le32 TotalDataCount;
1343         __le32 MaxParameterCount;
1344         __le32 MaxDataCount;
1345         __le32 ParameterCount;
1346         __le32 ParameterOffset;
1347         __le32 DataCount;
1348         __le32 DataOffset;
1349         __u8 SetupCount; /* four setup words follow subcommand */
1350         /* SNIA spec incorrectly included spurious pad here */
1351         __le16 SubCommand; /* 2 = IOCTL/FSCTL */
1352         __le32 FunctionCode;
1353         __u16 Fid;
1354         __u8 IsFsctl;  /* 1 = File System Control 0 = device control (IOCTL) */
1355         __u8 IsRootFlag; /* 1 = apply command to root of share (must be DFS) */
1356         __le16 ByteCount;
1357         __u8 Pad[3];
1358         __u8 Data[1];
1359 } __attribute__((packed)) TRANSACT_IOCTL_REQ;
1360
1361 typedef struct smb_com_transaction_compr_ioctl_req {
1362         struct smb_hdr hdr;     /* wct = 23 */
1363         __u8 MaxSetupCount;
1364         __u16 Reserved;
1365         __le32 TotalParameterCount;
1366         __le32 TotalDataCount;
1367         __le32 MaxParameterCount;
1368         __le32 MaxDataCount;
1369         __le32 ParameterCount;
1370         __le32 ParameterOffset;
1371         __le32 DataCount;
1372         __le32 DataOffset;
1373         __u8 SetupCount; /* four setup words follow subcommand */
1374         /* SNIA spec incorrectly included spurious pad here */
1375         __le16 SubCommand; /* 2 = IOCTL/FSCTL */
1376         __le32 FunctionCode;
1377         __u16 Fid;
1378         __u8 IsFsctl;  /* 1 = File System Control 0 = device control (IOCTL) */
1379         __u8 IsRootFlag; /* 1 = apply command to root of share (must be DFS) */
1380         __le16 ByteCount;
1381         __u8 Pad[3];
1382         __le16 compression_state;  /* See below for valid flags */
1383 } __attribute__((packed)) TRANSACT_COMPR_IOCTL_REQ;
1384
1385 /* compression state flags */
1386 #define COMPRESSION_FORMAT_NONE         0x0000
1387 #define COMPRESSION_FORMAT_DEFAULT      0x0001
1388 #define COMPRESSION_FORMAT_LZNT1        0x0002
1389
1390 typedef struct smb_com_transaction_ioctl_rsp {
1391         struct smb_hdr hdr;     /* wct = 19 */
1392         __u8 Reserved[3];
1393         __le32 TotalParameterCount;
1394         __le32 TotalDataCount;
1395         __le32 ParameterCount;
1396         __le32 ParameterOffset;
1397         __le32 ParameterDisplacement;
1398         __le32 DataCount;
1399         __le32 DataOffset;
1400         __le32 DataDisplacement;
1401         __u8 SetupCount;        /* 1 */
1402         __le16 ReturnedDataLen;
1403         __u16 ByteCount;
1404 } __attribute__((packed)) TRANSACT_IOCTL_RSP;
1405
1406 #define CIFS_ACL_OWNER 1
1407 #define CIFS_ACL_GROUP 2
1408 #define CIFS_ACL_DACL  4
1409 #define CIFS_ACL_SACL  8
1410
1411 typedef struct smb_com_transaction_qsec_req {
1412         struct smb_hdr hdr;     /* wct = 19 */
1413         __u8 MaxSetupCount;
1414         __u16 Reserved;
1415         __le32 TotalParameterCount;
1416         __le32 TotalDataCount;
1417         __le32 MaxParameterCount;
1418         __le32 MaxDataCount;
1419         __le32 ParameterCount;
1420         __le32 ParameterOffset;
1421         __le32 DataCount;
1422         __le32 DataOffset;
1423         __u8 SetupCount; /* no setup words follow subcommand */
1424         /* SNIA spec incorrectly included spurious pad here */
1425         __le16 SubCommand; /* 6 = QUERY_SECURITY_DESC */
1426         __le16 ByteCount; /* bcc = 3 + 8 */
1427         __u8 Pad[3];
1428         __u16 Fid;
1429         __u16 Reserved2;
1430         __le32 AclFlags;
1431 } __attribute__((packed)) QUERY_SEC_DESC_REQ;
1432
1433
1434 typedef struct smb_com_transaction_ssec_req {
1435         struct smb_hdr hdr;     /* wct = 19 */
1436         __u8 MaxSetupCount;
1437         __u16 Reserved;
1438         __le32 TotalParameterCount;
1439         __le32 TotalDataCount;
1440         __le32 MaxParameterCount;
1441         __le32 MaxDataCount;
1442         __le32 ParameterCount;
1443         __le32 ParameterOffset;
1444         __le32 DataCount;
1445         __le32 DataOffset;
1446         __u8 SetupCount; /* no setup words follow subcommand */
1447         /* SNIA spec incorrectly included spurious pad here */
1448         __le16 SubCommand; /* 3 = SET_SECURITY_DESC */
1449         __le16 ByteCount; /* bcc = 3 + 8 */
1450         __u8 Pad[3];
1451         __u16 Fid;
1452         __u16 Reserved2;
1453         __le32 AclFlags;
1454 } __attribute__((packed)) SET_SEC_DESC_REQ;
1455
1456 typedef struct smb_com_transaction_change_notify_req {
1457         struct smb_hdr hdr;     /* wct = 23 */
1458         __u8 MaxSetupCount;
1459         __u16 Reserved;
1460         __le32 TotalParameterCount;
1461         __le32 TotalDataCount;
1462         __le32 MaxParameterCount;
1463         __le32 MaxDataCount;
1464         __le32 ParameterCount;
1465         __le32 ParameterOffset;
1466         __le32 DataCount;
1467         __le32 DataOffset;
1468         __u8 SetupCount; /* four setup words follow subcommand */
1469         /* SNIA spec incorrectly included spurious pad here */
1470         __le16 SubCommand;/* 4 = Change Notify */
1471         __le32 CompletionFilter;  /* operation to monitor */
1472         __u16 Fid;
1473         __u8 WatchTree;  /* 1 = Monitor subdirectories */
1474         __u8 Reserved2;
1475         __le16 ByteCount;
1476 /*      __u8 Pad[3];*/
1477 /*      __u8 Data[1];*/
1478 } __attribute__((packed)) TRANSACT_CHANGE_NOTIFY_REQ;
1479
1480 /* BB eventually change to use generic ntransact rsp struct
1481       and validation routine */
1482 typedef struct smb_com_transaction_change_notify_rsp {
1483         struct smb_hdr hdr;     /* wct = 18 */
1484         __u8 Reserved[3];
1485         __le32 TotalParameterCount;
1486         __le32 TotalDataCount;
1487         __le32 ParameterCount;
1488         __le32 ParameterOffset;
1489         __le32 ParameterDisplacement;
1490         __le32 DataCount;
1491         __le32 DataOffset;
1492         __le32 DataDisplacement;
1493         __u8 SetupCount;   /* 0 */
1494         __u16 ByteCount;
1495         /* __u8 Pad[3]; */
1496 } __attribute__((packed)) TRANSACT_CHANGE_NOTIFY_RSP;
1497 /* Completion Filter flags for Notify */
1498 #define FILE_NOTIFY_CHANGE_FILE_NAME    0x00000001
1499 #define FILE_NOTIFY_CHANGE_DIR_NAME     0x00000002
1500 #define FILE_NOTIFY_CHANGE_NAME         0x00000003
1501 #define FILE_NOTIFY_CHANGE_ATTRIBUTES   0x00000004
1502 #define FILE_NOTIFY_CHANGE_SIZE         0x00000008
1503 #define FILE_NOTIFY_CHANGE_LAST_WRITE   0x00000010
1504 #define FILE_NOTIFY_CHANGE_LAST_ACCESS  0x00000020
1505 #define FILE_NOTIFY_CHANGE_CREATION     0x00000040
1506 #define FILE_NOTIFY_CHANGE_EA           0x00000080
1507 #define FILE_NOTIFY_CHANGE_SECURITY     0x00000100
1508 #define FILE_NOTIFY_CHANGE_STREAM_NAME  0x00000200
1509 #define FILE_NOTIFY_CHANGE_STREAM_SIZE  0x00000400
1510 #define FILE_NOTIFY_CHANGE_STREAM_WRITE 0x00000800
1511
1512 #define FILE_ACTION_ADDED               0x00000001
1513 #define FILE_ACTION_REMOVED             0x00000002
1514 #define FILE_ACTION_MODIFIED            0x00000003
1515 #define FILE_ACTION_RENAMED_OLD_NAME    0x00000004
1516 #define FILE_ACTION_RENAMED_NEW_NAME    0x00000005
1517 #define FILE_ACTION_ADDED_STREAM        0x00000006
1518 #define FILE_ACTION_REMOVED_STREAM      0x00000007
1519 #define FILE_ACTION_MODIFIED_STREAM     0x00000008
1520
1521 /* response contains array of the following structures */
1522 struct file_notify_information {
1523         __le32 NextEntryOffset;
1524         __le32 Action;
1525         __le32 FileNameLength;
1526         __u8  FileName[0];
1527 } __attribute__((packed));
1528
1529 /* For IO_REPARSE_TAG_SYMLINK */
1530 struct reparse_symlink_data {
1531         __le32  ReparseTag;
1532         __le16  ReparseDataLength;
1533         __u16   Reserved;
1534         __le16  SubstituteNameOffset;
1535         __le16  SubstituteNameLength;
1536         __le16  PrintNameOffset;
1537         __le16  PrintNameLength;
1538         __le32  Flags;
1539         char    PathBuffer[0];
1540 } __attribute__((packed));
1541
1542 /* For IO_REPARSE_TAG_NFS */
1543 #define NFS_SPECFILE_LNK        0x00000000014B4E4C
1544 #define NFS_SPECFILE_CHR        0x0000000000524843
1545 #define NFS_SPECFILE_BLK        0x00000000004B4C42
1546 #define NFS_SPECFILE_FIFO       0x000000004F464946
1547 #define NFS_SPECFILE_SOCK       0x000000004B434F53
1548 struct reparse_posix_data {
1549         __le32  ReparseTag;
1550         __le16  ReparseDataLength;
1551         __u16   Reserved;
1552         __le64  InodeType; /* LNK, FIFO, CHR etc. */
1553         char    PathBuffer[0];
1554 } __attribute__((packed));
1555
1556 struct cifs_quota_data {
1557         __u32   rsrvd1;  /* 0 */
1558         __u32   sid_size;
1559         __u64   rsrvd2;  /* 0 */
1560         __u64   space_used;
1561         __u64   soft_limit;
1562         __u64   hard_limit;
1563         char    sid[1];  /* variable size? */
1564 } __attribute__((packed));
1565
1566 /* quota sub commands */
1567 #define QUOTA_LIST_CONTINUE         0
1568 #define QUOTA_LIST_START        0x100
1569 #define QUOTA_FOR_SID           0x101
1570
1571 struct trans2_req {
1572         /* struct smb_hdr hdr precedes. Set wct = 14+ */
1573         __le16 TotalParameterCount;
1574         __le16 TotalDataCount;
1575         __le16 MaxParameterCount;
1576         __le16 MaxDataCount;
1577         __u8 MaxSetupCount;
1578         __u8 Reserved;
1579         __le16 Flags;
1580         __le32 Timeout;
1581         __u16 Reserved2;
1582         __le16 ParameterCount;
1583         __le16 ParameterOffset;
1584         __le16 DataCount;
1585         __le16 DataOffset;
1586         __u8 SetupCount;
1587         __u8 Reserved3;
1588         __le16 SubCommand; /* 1st setup word - SetupCount words follow */
1589         __le16 ByteCount;
1590 } __attribute__((packed));
1591
1592 struct smb_t2_req {
1593         struct smb_hdr hdr;
1594         struct trans2_req t2_req;
1595 } __attribute__((packed));
1596
1597 struct trans2_resp {
1598         /* struct smb_hdr hdr precedes. Note wct = 10 + setup count */
1599         __le16 TotalParameterCount;
1600         __le16 TotalDataCount;
1601         __u16 Reserved;
1602         __le16 ParameterCount;
1603         __le16 ParameterOffset;
1604         __le16 ParameterDisplacement;
1605         __le16 DataCount;
1606         __le16 DataOffset;
1607         __le16 DataDisplacement;
1608         __u8 SetupCount;
1609         __u8 Reserved1;
1610         /* SetupWords[SetupCount];
1611         __u16 ByteCount;
1612         __u16 Reserved2;*/
1613         /* data area follows */
1614 } __attribute__((packed));
1615
1616 struct smb_t2_rsp {
1617         struct smb_hdr hdr;
1618         struct trans2_resp t2_rsp;
1619 } __attribute__((packed));
1620
1621 /* PathInfo/FileInfo infolevels */
1622 #define SMB_INFO_STANDARD                   1
1623 #define SMB_SET_FILE_EA                     2
1624 #define SMB_QUERY_FILE_EA_SIZE              2
1625 #define SMB_INFO_QUERY_EAS_FROM_LIST        3
1626 #define SMB_INFO_QUERY_ALL_EAS              4
1627 #define SMB_INFO_IS_NAME_VALID              6
1628 #define SMB_QUERY_FILE_BASIC_INFO       0x101
1629 #define SMB_QUERY_FILE_STANDARD_INFO    0x102
1630 #define SMB_QUERY_FILE_EA_INFO          0x103
1631 #define SMB_QUERY_FILE_NAME_INFO        0x104
1632 #define SMB_QUERY_FILE_ALLOCATION_INFO  0x105
1633 #define SMB_QUERY_FILE_END_OF_FILEINFO  0x106
1634 #define SMB_QUERY_FILE_ALL_INFO         0x107
1635 #define SMB_QUERY_ALT_NAME_INFO         0x108
1636 #define SMB_QUERY_FILE_STREAM_INFO      0x109
1637 #define SMB_QUERY_FILE_COMPRESSION_INFO 0x10B
1638 #define SMB_QUERY_FILE_UNIX_BASIC       0x200
1639 #define SMB_QUERY_FILE_UNIX_LINK        0x201
1640 #define SMB_QUERY_POSIX_ACL             0x204
1641 #define SMB_QUERY_XATTR                 0x205  /* e.g. system EA name space */
1642 #define SMB_QUERY_ATTR_FLAGS            0x206  /* append,immutable etc. */
1643 #define SMB_QUERY_POSIX_PERMISSION      0x207
1644 #define SMB_QUERY_POSIX_LOCK            0x208
1645 /* #define SMB_POSIX_OPEN               0x209 */
1646 /* #define SMB_POSIX_UNLINK             0x20a */
1647 #define SMB_QUERY_FILE__UNIX_INFO2      0x20b
1648 #define SMB_QUERY_FILE_INTERNAL_INFO    0x3ee
1649 #define SMB_QUERY_FILE_ACCESS_INFO      0x3f0
1650 #define SMB_QUERY_FILE_NAME_INFO2       0x3f1 /* 0x30 bytes */
1651 #define SMB_QUERY_FILE_POSITION_INFO    0x3f6
1652 #define SMB_QUERY_FILE_MODE_INFO        0x3f8
1653 #define SMB_QUERY_FILE_ALGN_INFO        0x3f9
1654
1655
1656 #define SMB_SET_FILE_BASIC_INFO         0x101
1657 #define SMB_SET_FILE_DISPOSITION_INFO   0x102
1658 #define SMB_SET_FILE_ALLOCATION_INFO    0x103
1659 #define SMB_SET_FILE_END_OF_FILE_INFO   0x104
1660 #define SMB_SET_FILE_UNIX_BASIC         0x200
1661 #define SMB_SET_FILE_UNIX_LINK          0x201
1662 #define SMB_SET_FILE_UNIX_HLINK         0x203
1663 #define SMB_SET_POSIX_ACL               0x204
1664 #define SMB_SET_XATTR                   0x205
1665 #define SMB_SET_ATTR_FLAGS              0x206  /* append, immutable etc. */
1666 #define SMB_SET_POSIX_LOCK              0x208
1667 #define SMB_POSIX_OPEN                  0x209
1668 #define SMB_POSIX_UNLINK                0x20a
1669 #define SMB_SET_FILE_UNIX_INFO2         0x20b
1670 #define SMB_SET_FILE_BASIC_INFO2        0x3ec
1671 #define SMB_SET_FILE_RENAME_INFORMATION 0x3f2 /* BB check if qpathinfo too */
1672 #define SMB_FILE_ALL_INFO2              0x3fa
1673 #define SMB_SET_FILE_ALLOCATION_INFO2   0x3fb
1674 #define SMB_SET_FILE_END_OF_FILE_INFO2  0x3fc
1675 #define SMB_FILE_MOVE_CLUSTER_INFO      0x407
1676 #define SMB_FILE_QUOTA_INFO             0x408
1677 #define SMB_FILE_REPARSEPOINT_INFO      0x409
1678 #define SMB_FILE_MAXIMUM_INFO           0x40d
1679
1680 /* Find File infolevels */
1681 #define SMB_FIND_FILE_INFO_STANDARD       0x001
1682 #define SMB_FIND_FILE_QUERY_EA_SIZE       0x002
1683 #define SMB_FIND_FILE_QUERY_EAS_FROM_LIST 0x003
1684 #define SMB_FIND_FILE_DIRECTORY_INFO      0x101
1685 #define SMB_FIND_FILE_FULL_DIRECTORY_INFO 0x102
1686 #define SMB_FIND_FILE_NAMES_INFO          0x103
1687 #define SMB_FIND_FILE_BOTH_DIRECTORY_INFO 0x104
1688 #define SMB_FIND_FILE_ID_FULL_DIR_INFO    0x105
1689 #define SMB_FIND_FILE_ID_BOTH_DIR_INFO    0x106
1690 #define SMB_FIND_FILE_UNIX                0x202
1691
1692 typedef struct smb_com_transaction2_qpi_req {
1693         struct smb_hdr hdr;     /* wct = 14+ */
1694         __le16 TotalParameterCount;
1695         __le16 TotalDataCount;
1696         __le16 MaxParameterCount;
1697         __le16 MaxDataCount;
1698         __u8 MaxSetupCount;
1699         __u8 Reserved;
1700         __le16 Flags;
1701         __le32 Timeout;
1702         __u16 Reserved2;
1703         __le16 ParameterCount;
1704         __le16 ParameterOffset;
1705         __le16 DataCount;
1706         __le16 DataOffset;
1707         __u8 SetupCount;
1708         __u8 Reserved3;
1709         __le16 SubCommand;      /* one setup word */
1710         __le16 ByteCount;
1711         __u8 Pad;
1712         __le16 InformationLevel;
1713         __u32 Reserved4;
1714         char FileName[1];
1715 } __attribute__((packed)) TRANSACTION2_QPI_REQ;
1716
1717 typedef struct smb_com_transaction2_qpi_rsp {
1718         struct smb_hdr hdr;     /* wct = 10 + SetupCount */
1719         struct trans2_resp t2;
1720         __u16 ByteCount;
1721         __u16 Reserved2; /* parameter word is present for infolevels > 100 */
1722 } __attribute__((packed)) TRANSACTION2_QPI_RSP;
1723
1724 typedef struct smb_com_transaction2_spi_req {
1725         struct smb_hdr hdr;     /* wct = 15 */
1726         __le16 TotalParameterCount;
1727         __le16 TotalDataCount;
1728         __le16 MaxParameterCount;
1729         __le16 MaxDataCount;
1730         __u8 MaxSetupCount;
1731         __u8 Reserved;
1732         __le16 Flags;
1733         __le32 Timeout;
1734         __u16 Reserved2;
1735         __le16 ParameterCount;
1736         __le16 ParameterOffset;
1737         __le16 DataCount;
1738         __le16 DataOffset;
1739         __u8 SetupCount;
1740         __u8 Reserved3;
1741         __le16 SubCommand;      /* one setup word */
1742         __le16 ByteCount;
1743         __u8 Pad;
1744         __u16 Pad1;
1745         __le16 InformationLevel;
1746         __u32 Reserved4;
1747         char FileName[1];
1748 } __attribute__((packed)) TRANSACTION2_SPI_REQ;
1749
1750 typedef struct smb_com_transaction2_spi_rsp {
1751         struct smb_hdr hdr;     /* wct = 10 + SetupCount */
1752         struct trans2_resp t2;
1753         __u16 ByteCount;
1754         __u16 Reserved2; /* parameter word is present for infolevels > 100 */
1755 } __attribute__((packed)) TRANSACTION2_SPI_RSP;
1756
1757 struct set_file_rename {
1758         __le32 overwrite;   /* 1 = overwrite dest */
1759         __u32 root_fid;   /* zero */
1760         __le32 target_name_len;
1761         char  target_name[0];  /* Must be unicode */
1762 } __attribute__((packed));
1763
1764 struct smb_com_transaction2_sfi_req {
1765         struct smb_hdr hdr;     /* wct = 15 */
1766         __le16 TotalParameterCount;
1767         __le16 TotalDataCount;
1768         __le16 MaxParameterCount;
1769         __le16 MaxDataCount;
1770         __u8 MaxSetupCount;
1771         __u8 Reserved;
1772         __le16 Flags;
1773         __le32 Timeout;
1774         __u16 Reserved2;
1775         __le16 ParameterCount;
1776         __le16 ParameterOffset;
1777         __le16 DataCount;
1778         __le16 DataOffset;
1779         __u8 SetupCount;
1780         __u8 Reserved3;
1781         __le16 SubCommand;      /* one setup word */
1782         __le16 ByteCount;
1783         __u8 Pad;
1784         __u16 Pad1;
1785         __u16 Fid;
1786         __le16 InformationLevel;
1787         __u16 Reserved4;
1788 } __attribute__((packed));
1789
1790 struct smb_com_transaction2_sfi_rsp {
1791         struct smb_hdr hdr;     /* wct = 10 + SetupCount */
1792         struct trans2_resp t2;
1793         __u16 ByteCount;
1794         __u16 Reserved2;        /* parameter word reserved -
1795                                         present for infolevels > 100 */
1796 } __attribute__((packed));
1797
1798 struct smb_t2_qfi_req {
1799         struct  smb_hdr hdr;
1800         struct  trans2_req t2;
1801         __u8    Pad;
1802         __u16   Fid;
1803         __le16  InformationLevel;
1804 } __attribute__((packed));
1805
1806 struct smb_t2_qfi_rsp {
1807         struct smb_hdr hdr;     /* wct = 10 + SetupCount */
1808         struct trans2_resp t2;
1809         __u16 ByteCount;
1810         __u16 Reserved2;        /* parameter word reserved -
1811                                    present for infolevels > 100 */
1812 } __attribute__((packed));
1813
1814 /*
1815  * Flags on T2 FINDFIRST and FINDNEXT
1816  */
1817 #define CIFS_SEARCH_CLOSE_ALWAYS  0x0001
1818 #define CIFS_SEARCH_CLOSE_AT_END  0x0002
1819 #define CIFS_SEARCH_RETURN_RESUME 0x0004
1820 #define CIFS_SEARCH_CONTINUE_FROM_LAST 0x0008
1821 #define CIFS_SEARCH_BACKUP_SEARCH 0x0010
1822
1823 /*
1824  * Size of the resume key on FINDFIRST and FINDNEXT calls
1825  */
1826 #define CIFS_SMB_RESUME_KEY_SIZE 4
1827
1828 typedef struct smb_com_transaction2_ffirst_req {
1829         struct smb_hdr hdr;     /* wct = 15 */
1830         __le16 TotalParameterCount;
1831         __le16 TotalDataCount;
1832         __le16 MaxParameterCount;
1833         __le16 MaxDataCount;
1834         __u8 MaxSetupCount;
1835         __u8 Reserved;
1836         __le16 Flags;
1837         __le32 Timeout;
1838         __u16 Reserved2;
1839         __le16 ParameterCount;
1840         __le16 ParameterOffset;
1841         __le16 DataCount;
1842         __le16 DataOffset;
1843         __u8 SetupCount;        /* one */
1844         __u8 Reserved3;
1845         __le16 SubCommand;      /* TRANS2_FIND_FIRST */
1846         __le16 ByteCount;
1847         __u8 Pad;
1848         __le16 SearchAttributes;
1849         __le16 SearchCount;
1850         __le16 SearchFlags;
1851         __le16 InformationLevel;
1852         __le32 SearchStorageType;
1853         char FileName[1];
1854 } __attribute__((packed)) TRANSACTION2_FFIRST_REQ;
1855
1856 typedef struct smb_com_transaction2_ffirst_rsp {
1857         struct smb_hdr hdr;     /* wct = 10 */
1858         struct trans2_resp t2;
1859         __u16 ByteCount;
1860 } __attribute__((packed)) TRANSACTION2_FFIRST_RSP;
1861
1862 typedef struct smb_com_transaction2_ffirst_rsp_parms {
1863         __u16 SearchHandle;
1864         __le16 SearchCount;
1865         __le16 EndofSearch;
1866         __le16 EAErrorOffset;
1867         __le16 LastNameOffset;
1868 } __attribute__((packed)) T2_FFIRST_RSP_PARMS;
1869
1870 typedef struct smb_com_transaction2_fnext_req {
1871         struct smb_hdr hdr;     /* wct = 15 */
1872         __le16 TotalParameterCount;
1873         __le16 TotalDataCount;
1874         __le16 MaxParameterCount;
1875         __le16 MaxDataCount;
1876         __u8 MaxSetupCount;
1877         __u8 Reserved;
1878         __le16 Flags;
1879         __le32 Timeout;
1880         __u16 Reserved2;
1881         __le16 ParameterCount;
1882         __le16 ParameterOffset;
1883         __le16 DataCount;
1884         __le16 DataOffset;
1885         __u8 SetupCount;        /* one */
1886         __u8 Reserved3;
1887         __le16 SubCommand;      /* TRANS2_FIND_NEXT */
1888         __le16 ByteCount;
1889         __u8 Pad;
1890         __u16 SearchHandle;
1891         __le16 SearchCount;
1892         __le16 InformationLevel;
1893         __u32 ResumeKey;
1894         __le16 SearchFlags;
1895         char ResumeFileName[1];
1896 } __attribute__((packed)) TRANSACTION2_FNEXT_REQ;
1897
1898 typedef struct smb_com_transaction2_fnext_rsp {
1899         struct smb_hdr hdr;     /* wct = 10 */
1900         struct trans2_resp t2;
1901         __u16 ByteCount;
1902 } __attribute__((packed)) TRANSACTION2_FNEXT_RSP;
1903
1904 typedef struct smb_com_transaction2_fnext_rsp_parms {
1905         __le16 SearchCount;
1906         __le16 EndofSearch;
1907         __le16 EAErrorOffset;
1908         __le16 LastNameOffset;
1909 } __attribute__((packed)) T2_FNEXT_RSP_PARMS;
1910
1911 /* QFSInfo Levels */
1912 #define SMB_INFO_ALLOCATION         1
1913 #define SMB_INFO_VOLUME             2
1914 #define SMB_QUERY_FS_VOLUME_INFO    0x102
1915 #define SMB_QUERY_FS_SIZE_INFO      0x103
1916 #define SMB_QUERY_FS_DEVICE_INFO    0x104
1917 #define SMB_QUERY_FS_ATTRIBUTE_INFO 0x105
1918 #define SMB_QUERY_CIFS_UNIX_INFO    0x200
1919 #define SMB_QUERY_POSIX_FS_INFO     0x201
1920 #define SMB_QUERY_POSIX_WHO_AM_I    0x202
1921 #define SMB_REQUEST_TRANSPORT_ENCRYPTION 0x203
1922 #define SMB_QUERY_FS_PROXY          0x204 /* WAFS enabled. Returns structure
1923                                             FILE_SYSTEM__UNIX_INFO to tell
1924                                             whether new NTIOCTL available
1925                                             (0xACE) for WAN friendly SMB
1926                                             operations to be carried */
1927 #define SMB_QUERY_LABEL_INFO        0x3ea
1928 #define SMB_QUERY_FS_QUOTA_INFO     0x3ee
1929 #define SMB_QUERY_FS_FULL_SIZE_INFO 0x3ef
1930 #define SMB_QUERY_OBJECTID_INFO     0x3f0
1931
1932 typedef struct smb_com_transaction2_qfsi_req {
1933         struct smb_hdr hdr;     /* wct = 14+ */
1934         __le16 TotalParameterCount;
1935         __le16 TotalDataCount;
1936         __le16 MaxParameterCount;
1937         __le16 MaxDataCount;
1938         __u8 MaxSetupCount;
1939         __u8 Reserved;
1940         __le16 Flags;
1941         __le32 Timeout;
1942         __u16 Reserved2;
1943         __le16 ParameterCount;
1944         __le16 ParameterOffset;
1945         __le16 DataCount;
1946         __le16 DataOffset;
1947         __u8 SetupCount;
1948         __u8 Reserved3;
1949         __le16 SubCommand;      /* one setup word */
1950         __le16 ByteCount;
1951         __u8 Pad;
1952         __le16 InformationLevel;
1953 } __attribute__((packed)) TRANSACTION2_QFSI_REQ;
1954
1955 typedef struct smb_com_transaction_qfsi_rsp {
1956         struct smb_hdr hdr;     /* wct = 10 + SetupCount */
1957         struct trans2_resp t2;
1958         __u16 ByteCount;
1959         __u8 Pad;       /* may be three bytes? *//* followed by data area */
1960 } __attribute__((packed)) TRANSACTION2_QFSI_RSP;
1961
1962 typedef struct whoami_rsp_data { /* Query level 0x202 */
1963         __u32 flags; /* 0 = Authenticated user 1 = GUEST */
1964         __u32 mask; /* which flags bits server understands ie 0x0001 */
1965         __u64 unix_user_id;
1966         __u64 unix_user_gid;
1967         __u32 number_of_supplementary_gids; /* may be zero */
1968         __u32 number_of_sids; /* may be zero */
1969         __u32 length_of_sid_array; /* in bytes - may be zero */
1970         __u32 pad; /* reserved - MBZ */
1971         /* __u64 gid_array[0]; */  /* may be empty */
1972         /* __u8 * psid_list */  /* may be empty */
1973 } __attribute__((packed)) WHOAMI_RSP_DATA;
1974
1975 /* SETFSInfo Levels */
1976 #define SMB_SET_CIFS_UNIX_INFO    0x200
1977 /* level 0x203 is defined above in list of QFS info levels */
1978 /* #define SMB_REQUEST_TRANSPORT_ENCRYPTION 0x203 */
1979
1980 /* Level 0x200 request structure follows */
1981 typedef struct smb_com_transaction2_setfsi_req {
1982         struct smb_hdr hdr;     /* wct = 15 */
1983         __le16 TotalParameterCount;
1984         __le16 TotalDataCount;
1985         __le16 MaxParameterCount;
1986         __le16 MaxDataCount;
1987         __u8 MaxSetupCount;
1988         __u8 Reserved;
1989         __le16 Flags;
1990         __le32 Timeout;
1991         __u16 Reserved2;
1992         __le16 ParameterCount;  /* 4 */
1993         __le16 ParameterOffset;
1994         __le16 DataCount;       /* 12 */
1995         __le16 DataOffset;
1996         __u8 SetupCount;        /* one */
1997         __u8 Reserved3;
1998         __le16 SubCommand;      /* TRANS2_SET_FS_INFORMATION */
1999         __le16 ByteCount;
2000         __u8 Pad;
2001         __u16 FileNum;          /* Parameters start. */
2002         __le16 InformationLevel;/* Parameters end. */
2003         __le16 ClientUnixMajor; /* Data start. */
2004         __le16 ClientUnixMinor;
2005         __le64 ClientUnixCap;   /* Data end */
2006 } __attribute__((packed)) TRANSACTION2_SETFSI_REQ;
2007
2008 /* level 0x203 request structure follows */
2009 typedef struct smb_com_transaction2_setfs_enc_req {
2010         struct smb_hdr hdr;     /* wct = 15 */
2011         __le16 TotalParameterCount;
2012         __le16 TotalDataCount;
2013         __le16 MaxParameterCount;
2014         __le16 MaxDataCount;
2015         __u8 MaxSetupCount;
2016         __u8 Reserved;
2017         __le16 Flags;
2018         __le32 Timeout;
2019         __u16 Reserved2;
2020         __le16 ParameterCount;  /* 4 */
2021         __le16 ParameterOffset;
2022         __le16 DataCount;       /* 12 */
2023         __le16 DataOffset;
2024         __u8 SetupCount;        /* one */
2025         __u8 Reserved3;
2026         __le16 SubCommand;      /* TRANS2_SET_FS_INFORMATION */
2027         __le16 ByteCount;
2028         __u8 Pad;
2029         __u16  Reserved4;       /* Parameters start. */
2030         __le16 InformationLevel;/* Parameters end. */
2031         /* NTLMSSP Blob, Data start. */
2032 } __attribute__((packed)) TRANSACTION2_SETFSI_ENC_REQ;
2033
2034 /* response for setfsinfo levels 0x200 and 0x203 */
2035 typedef struct smb_com_transaction2_setfsi_rsp {
2036         struct smb_hdr hdr;     /* wct = 10 */
2037         struct trans2_resp t2;
2038         __u16 ByteCount;
2039 } __attribute__((packed)) TRANSACTION2_SETFSI_RSP;
2040
2041 typedef struct smb_com_transaction2_get_dfs_refer_req {
2042         struct smb_hdr hdr;     /* wct = 15 */
2043         __le16 TotalParameterCount;
2044         __le16 TotalDataCount;
2045         __le16 MaxParameterCount;
2046         __le16 MaxDataCount;
2047         __u8 MaxSetupCount;
2048         __u8 Reserved;
2049         __le16 Flags;
2050         __le32 Timeout;
2051         __u16 Reserved2;
2052         __le16 ParameterCount;
2053         __le16 ParameterOffset;
2054         __le16 DataCount;
2055         __le16 DataOffset;
2056         __u8 SetupCount;
2057         __u8 Reserved3;
2058         __le16 SubCommand;      /* one setup word */
2059         __le16 ByteCount;
2060         __u8 Pad[3];            /* Win2K has sent 0x0F01 (max response length
2061                                    perhaps?) followed by one byte pad - doesn't
2062                                    seem to matter though */
2063         __le16 MaxReferralLevel;
2064         char RequestFileName[1];
2065 } __attribute__((packed)) TRANSACTION2_GET_DFS_REFER_REQ;
2066
2067 #define DFS_VERSION cpu_to_le16(0x0003)
2068
2069 /* DFS server target type */
2070 #define DFS_TYPE_LINK 0x0000  /* also for sysvol targets */
2071 #define DFS_TYPE_ROOT 0x0001
2072
2073 /* Referral Entry Flags */
2074 #define DFS_NAME_LIST_REF 0x0200 /* set for domain or DC referral responses */
2075 #define DFS_TARGET_SET_BOUNDARY 0x0400 /* only valid with version 4 dfs req */
2076
2077 typedef struct dfs_referral_level_3 { /* version 4 is same, + one flag bit */
2078         __le16 VersionNumber;  /* must be 3 or 4 */
2079         __le16 Size;
2080         __le16 ServerType; /* 0x0001 = root targets; 0x0000 = link targets */
2081         __le16 ReferralEntryFlags;
2082         __le32 TimeToLive;
2083         __le16 DfsPathOffset;
2084         __le16 DfsAlternatePathOffset;
2085         __le16 NetworkAddressOffset; /* offset of the link target */
2086         __u8   ServiceSiteGuid[16];  /* MBZ, ignored */
2087 } __attribute__((packed)) REFERRAL3;
2088
2089 typedef struct smb_com_transaction_get_dfs_refer_rsp {
2090         struct smb_hdr hdr;     /* wct = 10 */
2091         struct trans2_resp t2;
2092         __u16 ByteCount;
2093         __u8 Pad;
2094         __le16 PathConsumed;
2095         __le16 NumberOfReferrals;
2096         __le32 DFSFlags;
2097         REFERRAL3 referrals[1]; /* array of level 3 dfs_referral structures */
2098         /* followed by the strings pointed to by the referral structures */
2099 } __attribute__((packed)) TRANSACTION2_GET_DFS_REFER_RSP;
2100
2101 /* DFS Flags */
2102 #define DFSREF_REFERRAL_SERVER  0x00000001 /* all targets are DFS roots */
2103 #define DFSREF_STORAGE_SERVER   0x00000002 /* no further ref requests needed */
2104 #define DFSREF_TARGET_FAILBACK  0x00000004 /* only for DFS referral version 4 */
2105
2106 /*
2107  ************************************************************************
2108  * All structs for everything above the SMB PDUs themselves
2109  * (such as the T2 level specific data) go here
2110  ************************************************************************
2111  */
2112
2113 /*
2114  * Information on a server
2115  */
2116
2117 struct serverInfo {
2118         char name[16];
2119         unsigned char versionMajor;
2120         unsigned char versionMinor;
2121         unsigned long type;
2122         unsigned int commentOffset;
2123 } __attribute__((packed));
2124
2125 /*
2126  * The following structure is the format of the data returned on a NetShareEnum
2127  * with level "90" (x5A)
2128  */
2129
2130 struct shareInfo {
2131         char shareName[13];
2132         char pad;
2133         unsigned short type;
2134         unsigned int commentOffset;
2135 } __attribute__((packed));
2136
2137 struct aliasInfo {
2138         char aliasName[9];
2139         char pad;
2140         unsigned int commentOffset;
2141         unsigned char type[2];
2142 } __attribute__((packed));
2143
2144 struct aliasInfo92 {
2145         int aliasNameOffset;
2146         int serverNameOffset;
2147         int shareNameOffset;
2148 } __attribute__((packed));
2149
2150 typedef struct {
2151         __le64 TotalAllocationUnits;
2152         __le64 FreeAllocationUnits;
2153         __le32 SectorsPerAllocationUnit;
2154         __le32 BytesPerSector;
2155 } __attribute__((packed)) FILE_SYSTEM_INFO;     /* size info, level 0x103 */
2156
2157 typedef struct {
2158         __le32 fsid;
2159         __le32 SectorsPerAllocationUnit;
2160         __le32 TotalAllocationUnits;
2161         __le32 FreeAllocationUnits;
2162         __le16  BytesPerSector;
2163 } __attribute__((packed)) FILE_SYSTEM_ALLOC_INFO;
2164
2165 typedef struct {
2166         __le16 MajorVersionNumber;
2167         __le16 MinorVersionNumber;
2168         __le64 Capability;
2169 } __attribute__((packed)) FILE_SYSTEM_UNIX_INFO; /* Unix extension level 0x200*/
2170
2171 /* Version numbers for CIFS UNIX major and minor. */
2172 #define CIFS_UNIX_MAJOR_VERSION 1
2173 #define CIFS_UNIX_MINOR_VERSION 0
2174
2175 /* Linux/Unix extensions capability flags */
2176 #define CIFS_UNIX_FCNTL_CAP             0x00000001 /* support for fcntl locks */
2177 #define CIFS_UNIX_POSIX_ACL_CAP         0x00000002 /* support getfacl/setfacl */
2178 #define CIFS_UNIX_XATTR_CAP             0x00000004 /* support new namespace   */
2179 #define CIFS_UNIX_EXTATTR_CAP           0x00000008 /* support chattr/chflag   */
2180 #define CIFS_UNIX_POSIX_PATHNAMES_CAP   0x00000010 /* Allow POSIX path chars  */
2181 #define CIFS_UNIX_POSIX_PATH_OPS_CAP    0x00000020 /* Allow new POSIX path based
2182                                                       calls including posix open
2183                                                       and posix unlink */
2184 #define CIFS_UNIX_LARGE_READ_CAP        0x00000040 /* support reads >128K (up
2185                                                       to 0xFFFF00 */
2186 #define CIFS_UNIX_LARGE_WRITE_CAP       0x00000080
2187 #define CIFS_UNIX_TRANSPORT_ENCRYPTION_CAP 0x00000100 /* can do SPNEGO crypt */
2188 #define CIFS_UNIX_TRANSPORT_ENCRYPTION_MANDATORY_CAP  0x00000200 /* must do  */
2189 #define CIFS_UNIX_PROXY_CAP             0x00000400 /* Proxy cap: 0xACE ioctl and
2190                                                       QFS PROXY call */
2191 #ifdef CONFIG_CIFS_POSIX
2192 /* presumably don't need the 0x20 POSIX_PATH_OPS_CAP since we never send
2193    LockingX instead of posix locking call on unix sess (and we do not expect
2194    LockingX to use different (ie Windows) semantics than posix locking on
2195    the same session (if WINE needs to do this later, we can add this cap
2196    back in later */
2197 /* #define CIFS_UNIX_CAP_MASK              0x000000fb */
2198 #define CIFS_UNIX_CAP_MASK              0x000003db
2199 #else
2200 #define CIFS_UNIX_CAP_MASK              0x00000013
2201 #endif /* CONFIG_CIFS_POSIX */
2202
2203
2204 #define CIFS_POSIX_EXTENSIONS           0x00000010 /* support for new QFSInfo */
2205
2206 typedef struct {
2207         /* For undefined recommended transfer size return -1 in that field */
2208         __le32 OptimalTransferSize;  /* bsize on some os, iosize on other os */
2209         __le32 BlockSize;
2210     /* The next three fields are in terms of the block size.
2211         (above). If block size is unknown, 4096 would be a
2212         reasonable block size for a server to report.
2213         Note that returning the blocks/blocksavail removes need
2214         to make a second call (to QFSInfo level 0x103 to get this info.
2215         UserBlockAvail is typically less than or equal to BlocksAvail,
2216         if no distinction is made return the same value in each */
2217         __le64 TotalBlocks;
2218         __le64 BlocksAvail;       /* bfree */
2219         __le64 UserBlocksAvail;   /* bavail */
2220     /* For undefined Node fields or FSID return -1 */
2221         __le64 TotalFileNodes;
2222         __le64 FreeFileNodes;
2223         __le64 FileSysIdentifier;   /* fsid */
2224         /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
2225         /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call   */
2226 } __attribute__((packed)) FILE_SYSTEM_POSIX_INFO;
2227
2228 /* DeviceType Flags */
2229 #define FILE_DEVICE_CD_ROM              0x00000002
2230 #define FILE_DEVICE_CD_ROM_FILE_SYSTEM  0x00000003
2231 #define FILE_DEVICE_DFS                 0x00000006
2232 #define FILE_DEVICE_DISK                0x00000007
2233 #define FILE_DEVICE_DISK_FILE_SYSTEM    0x00000008
2234 #define FILE_DEVICE_FILE_SYSTEM         0x00000009
2235 #define FILE_DEVICE_NAMED_PIPE          0x00000011
2236 #define FILE_DEVICE_NETWORK             0x00000012
2237 #define FILE_DEVICE_NETWORK_FILE_SYSTEM 0x00000014
2238 #define FILE_DEVICE_NULL                0x00000015
2239 #define FILE_DEVICE_PARALLEL_PORT       0x00000016
2240 #define FILE_DEVICE_PRINTER             0x00000018
2241 #define FILE_DEVICE_SERIAL_PORT         0x0000001b
2242 #define FILE_DEVICE_STREAMS             0x0000001e
2243 #define FILE_DEVICE_TAPE                0x0000001f
2244 #define FILE_DEVICE_TAPE_FILE_SYSTEM    0x00000020
2245 #define FILE_DEVICE_VIRTUAL_DISK        0x00000024
2246 #define FILE_DEVICE_NETWORK_REDIRECTOR  0x00000028
2247
2248 typedef struct {
2249         __le32 DeviceType;
2250         __le32 DeviceCharacteristics;
2251 } __attribute__((packed)) FILE_SYSTEM_DEVICE_INFO; /* device info level 0x104 */
2252
2253 /* minimum includes first three fields, and empty FS Name */
2254 #define MIN_FS_ATTR_INFO_SIZE 12
2255
2256
2257 /* List of FileSystemAttributes - see 2.5.1 of MS-FSCC */
2258 #define FILE_SUPPORT_INTEGRITY_STREAMS  0x04000000
2259 #define FILE_SUPPORTS_USN_JOURNAL       0x02000000
2260 #define FILE_SUPPORTS_OPEN_BY_FILE_ID   0x01000000
2261 #define FILE_SUPPORTS_EXTENDED_ATTRIBUTES 0x00800000
2262 #define FILE_SUPPORTS_HARD_LINKS        0x00400000
2263 #define FILE_SUPPORTS_TRANSACTIONS      0x00200000
2264 #define FILE_SEQUENTIAL_WRITE_ONCE      0x00100000
2265 #define FILE_READ_ONLY_VOLUME           0x00080000
2266 #define FILE_NAMED_STREAMS              0x00040000
2267 #define FILE_SUPPORTS_ENCRYPTION        0x00020000
2268 #define FILE_SUPPORTS_OBJECT_IDS        0x00010000
2269 #define FILE_VOLUME_IS_COMPRESSED       0x00008000
2270 #define FILE_SUPPORTS_REMOTE_STORAGE    0x00000100
2271 #define FILE_SUPPORTS_REPARSE_POINTS    0x00000080
2272 #define FILE_SUPPORTS_SPARSE_FILES      0x00000040
2273 #define FILE_VOLUME_QUOTAS              0x00000020
2274 #define FILE_FILE_COMPRESSION           0x00000010
2275 #define FILE_PERSISTENT_ACLS            0x00000008
2276 #define FILE_UNICODE_ON_DISK            0x00000004
2277 #define FILE_CASE_PRESERVED_NAMES       0x00000002
2278 #define FILE_CASE_SENSITIVE_SEARCH      0x00000001
2279 typedef struct {
2280         __le32 Attributes;
2281         __le32 MaxPathNameComponentLength;
2282         __le32 FileSystemNameLen;
2283         char FileSystemName[52]; /* do not have to save this - get subset? */
2284 } __attribute__((packed)) FILE_SYSTEM_ATTRIBUTE_INFO;
2285
2286 /******************************************************************************/
2287 /* QueryFileInfo/QueryPathinfo (also for SetPath/SetFile) data buffer formats */
2288 /******************************************************************************/
2289 typedef struct { /* data block encoding of response to level 263 QPathInfo */
2290         __le64 CreationTime;
2291         __le64 LastAccessTime;
2292         __le64 LastWriteTime;
2293         __le64 ChangeTime;
2294         __le32 Attributes;
2295         __u32 Pad1;
2296         __le64 AllocationSize;
2297         __le64 EndOfFile;       /* size ie offset to first free byte in file */
2298         __le32 NumberOfLinks;   /* hard links */
2299         __u8 DeletePending;
2300         __u8 Directory;
2301         __u16 Pad2;
2302         __le64 IndexNumber;
2303         __le32 EASize;
2304         __le32 AccessFlags;
2305         __u64 IndexNumber1;
2306         __le64 CurrentByteOffset;
2307         __le32 Mode;
2308         __le32 AlignmentRequirement;
2309         __le32 FileNameLength;
2310         char FileName[1];
2311 } __attribute__((packed)) FILE_ALL_INFO;        /* level 0x107 QPathInfo */
2312
2313 /* defines for enumerating possible values of the Unix type field below */
2314 #define UNIX_FILE      0
2315 #define UNIX_DIR       1
2316 #define UNIX_SYMLINK   2
2317 #define UNIX_CHARDEV   3
2318 #define UNIX_BLOCKDEV  4
2319 #define UNIX_FIFO      5
2320 #define UNIX_SOCKET    6
2321 typedef struct {
2322         __le64 EndOfFile;
2323         __le64 NumOfBytes;
2324         __le64 LastStatusChange; /*SNIA specs DCE time for the 3 time fields */
2325         __le64 LastAccessTime;
2326         __le64 LastModificationTime;
2327         __le64 Uid;
2328         __le64 Gid;
2329         __le32 Type;
2330         __le64 DevMajor;
2331         __le64 DevMinor;
2332         __le64 UniqueId;
2333         __le64 Permissions;
2334         __le64 Nlinks;
2335 } __attribute__((packed)) FILE_UNIX_BASIC_INFO; /* level 0x200 QPathInfo */
2336
2337 typedef struct {
2338         char LinkDest[1];
2339 } __attribute__((packed)) FILE_UNIX_LINK_INFO;  /* level 0x201 QPathInfo */
2340
2341 /* The following three structures are needed only for
2342         setting time to NT4 and some older servers via
2343         the primitive DOS time format */
2344 typedef struct {
2345         __u16 Day:5;
2346         __u16 Month:4;
2347         __u16 Year:7;
2348 } __attribute__((packed)) SMB_DATE;
2349
2350 typedef struct {
2351         __u16 TwoSeconds:5;
2352         __u16 Minutes:6;
2353         __u16 Hours:5;
2354 } __attribute__((packed)) SMB_TIME;
2355
2356 typedef struct {
2357         __le16 CreationDate; /* SMB Date see above */
2358         __le16 CreationTime; /* SMB Time */
2359         __le16 LastAccessDate;
2360         __le16 LastAccessTime;
2361         __le16 LastWriteDate;
2362         __le16 LastWriteTime;
2363         __le32 DataSize; /* File Size (EOF) */
2364         __le32 AllocationSize;
2365         __le16 Attributes; /* verify not u32 */
2366         __le32 EASize;
2367 } __attribute__((packed)) FILE_INFO_STANDARD;  /* level 1 SetPath/FileInfo */
2368
2369 typedef struct {
2370         __le64 CreationTime;
2371         __le64 LastAccessTime;
2372         __le64 LastWriteTime;
2373         __le64 ChangeTime;
2374         __le32 Attributes;
2375         __u32 Pad;
2376 } __attribute__((packed)) FILE_BASIC_INFO;      /* size info, level 0x101 */
2377
2378 struct file_allocation_info {
2379         __le64 AllocationSize; /* Note old Samba srvr rounds this up too much */
2380 } __attribute__((packed));      /* size used on disk, for level 0x103 for set,
2381                                    0x105 for query */
2382
2383 struct file_end_of_file_info {
2384         __le64 FileSize;                /* offset to end of file */
2385 } __attribute__((packed)); /* size info, level 0x104 for set, 0x106 for query */
2386
2387 struct file_alt_name_info {
2388         __u8   alt_name[1];
2389 } __attribute__((packed));      /* level 0x0108 */
2390
2391 struct file_stream_info {
2392         __le32 number_of_streams;  /* BB check sizes and verify location */
2393         /* followed by info on streams themselves
2394                 u64 size;
2395                 u64 allocation_size
2396                 stream info */
2397 };      /* level 0x109 */
2398
2399 struct file_compression_info {
2400         __le64 compressed_size;
2401         __le16 format;
2402         __u8   unit_shift;
2403         __u8   ch_shift;
2404         __u8   cl_shift;
2405         __u8   pad[3];
2406 } __attribute__((packed));      /* level 0x10b */
2407
2408 /* POSIX ACL set/query path info structures */
2409 #define CIFS_ACL_VERSION 1
2410 struct cifs_posix_ace { /* access control entry (ACE) */
2411         __u8  cifs_e_tag;
2412         __u8  cifs_e_perm;
2413         __le64 cifs_uid; /* or gid */
2414 } __attribute__((packed));
2415
2416 struct cifs_posix_acl { /* access conrol list  (ACL) */
2417         __le16  version;
2418         __le16  access_entry_count;  /* access ACL - count of entries */
2419         __le16  default_entry_count; /* default ACL - count of entries */
2420         struct cifs_posix_ace ace_array[0];
2421         /* followed by
2422         struct cifs_posix_ace default_ace_arraay[] */
2423 } __attribute__((packed));  /* level 0x204 */
2424
2425 /* types of access control entries already defined in posix_acl.h */
2426 /* #define CIFS_POSIX_ACL_USER_OBJ       0x01
2427 #define CIFS_POSIX_ACL_USER      0x02
2428 #define CIFS_POSIX_ACL_GROUP_OBJ 0x04
2429 #define CIFS_POSIX_ACL_GROUP     0x08
2430 #define CIFS_POSIX_ACL_MASK      0x10
2431 #define CIFS_POSIX_ACL_OTHER     0x20 */
2432
2433 /* types of perms */
2434 /* #define CIFS_POSIX_ACL_EXECUTE   0x01
2435 #define CIFS_POSIX_ACL_WRITE     0x02
2436 #define CIFS_POSIX_ACL_READ          0x04 */
2437
2438 /* end of POSIX ACL definitions */
2439
2440 /* POSIX Open Flags */
2441 #define SMB_O_RDONLY     0x1
2442 #define SMB_O_WRONLY    0x2
2443 #define SMB_O_RDWR      0x4
2444 #define SMB_O_CREAT     0x10
2445 #define SMB_O_EXCL      0x20
2446 #define SMB_O_TRUNC     0x40
2447 #define SMB_O_APPEND    0x80
2448 #define SMB_O_SYNC      0x100
2449 #define SMB_O_DIRECTORY 0x200
2450 #define SMB_O_NOFOLLOW  0x400
2451 #define SMB_O_DIRECT    0x800
2452
2453 typedef struct {
2454         __le32 OpenFlags; /* same as NT CreateX */
2455         __le32 PosixOpenFlags;
2456         __le64 Permissions;
2457         __le16 Level; /* reply level requested (see QPathInfo levels) */
2458 } __attribute__((packed)) OPEN_PSX_REQ; /* level 0x209 SetPathInfo data */
2459
2460 typedef struct {
2461         __le16 OplockFlags;
2462         __u16 Fid;
2463         __le32 CreateAction;
2464         __le16 ReturnedLevel;
2465         __le16 Pad;
2466         /* struct following varies based on requested level */
2467 } __attribute__((packed)) OPEN_PSX_RSP; /* level 0x209 SetPathInfo data */
2468
2469 #define SMB_POSIX_UNLINK_FILE_TARGET            0
2470 #define SMB_POSIX_UNLINK_DIRECTORY_TARGET       1
2471
2472 struct unlink_psx_rq { /* level 0x20a SetPathInfo */
2473         __le16 type;
2474 } __attribute__((packed));
2475
2476 struct file_internal_info {
2477         __le64  UniqueId; /* inode number */
2478 } __attribute__((packed));      /* level 0x3ee */
2479
2480 struct file_mode_info {
2481         __le32  Mode;
2482 } __attribute__((packed));      /* level 0x3f8 */
2483
2484 struct file_attrib_tag {
2485         __le32 Attribute;
2486         __le32 ReparseTag;
2487 } __attribute__((packed));      /* level 0x40b */
2488
2489
2490 /********************************************************/
2491 /*  FindFirst/FindNext transact2 data buffer formats    */
2492 /********************************************************/
2493
2494 typedef struct {
2495         __le32 NextEntryOffset;
2496         __u32 ResumeKey; /* as with FileIndex - no need to convert */
2497         FILE_UNIX_BASIC_INFO basic;
2498         char FileName[1];
2499 } __attribute__((packed)) FILE_UNIX_INFO; /* level 0x202 */
2500
2501 typedef struct {
2502         __le32 NextEntryOffset;
2503         __u32 FileIndex;
2504         __le64 CreationTime;
2505         __le64 LastAccessTime;
2506         __le64 LastWriteTime;
2507         __le64 ChangeTime;
2508         __le64 EndOfFile;
2509         __le64 AllocationSize;
2510         __le32 ExtFileAttributes;
2511         __le32 FileNameLength;
2512         char FileName[1];
2513 } __attribute__((packed)) FILE_DIRECTORY_INFO;   /* level 0x101 FF resp data */
2514
2515 typedef struct {
2516         __le32 NextEntryOffset;
2517         __u32 FileIndex;
2518         __le64 CreationTime;
2519         __le64 LastAccessTime;
2520         __le64 LastWriteTime;
2521         __le64 ChangeTime;
2522         __le64 EndOfFile;
2523         __le64 AllocationSize;
2524         __le32 ExtFileAttributes;
2525         __le32 FileNameLength;
2526         __le32 EaSize; /* length of the xattrs */
2527         char FileName[1];
2528 } __attribute__((packed)) FILE_FULL_DIRECTORY_INFO; /* level 0x102 rsp data */
2529
2530 typedef struct {
2531         __le32 NextEntryOffset;
2532         __u32 FileIndex;
2533         __le64 CreationTime;
2534         __le64 LastAccessTime;
2535         __le64 LastWriteTime;
2536         __le64 ChangeTime;
2537         __le64 EndOfFile;
2538         __le64 AllocationSize;
2539         __le32 ExtFileAttributes;
2540         __le32 FileNameLength;
2541         __le32 EaSize; /* EA size */
2542         __le32 Reserved;
2543         __le64 UniqueId; /* inode num - le since Samba puts ino in low 32 bit*/
2544         char FileName[1];
2545 } __attribute__((packed)) SEARCH_ID_FULL_DIR_INFO; /* level 0x105 FF rsp data */
2546
2547 typedef struct {
2548         __le32 NextEntryOffset;
2549         __u32 FileIndex;
2550         __le64 CreationTime;
2551         __le64 LastAccessTime;
2552         __le64 LastWriteTime;
2553         __le64 ChangeTime;
2554         __le64 EndOfFile;
2555         __le64 AllocationSize;
2556         __le32 ExtFileAttributes;
2557         __le32 FileNameLength;
2558         __le32 EaSize; /* length of the xattrs */
2559         __u8   ShortNameLength;
2560         __u8   Reserved;
2561         __u8   ShortName[12];
2562         char FileName[1];
2563 } __attribute__((packed)) FILE_BOTH_DIRECTORY_INFO; /* level 0x104 FFrsp data */
2564
2565 typedef struct {
2566         __u32  ResumeKey;
2567         __le16 CreationDate; /* SMB Date */
2568         __le16 CreationTime; /* SMB Time */
2569         __le16 LastAccessDate;
2570         __le16 LastAccessTime;
2571         __le16 LastWriteDate;
2572         __le16 LastWriteTime;
2573         __le32 DataSize; /* File Size (EOF) */
2574         __le32 AllocationSize;
2575         __le16 Attributes; /* verify not u32 */
2576         __u8   FileNameLength;
2577         char FileName[1];
2578 } __attribute__((packed)) FIND_FILE_STANDARD_INFO; /* level 0x1 FF resp data */
2579
2580
2581 struct win_dev {
2582         unsigned char type[8]; /* IntxCHR or IntxBLK */
2583         __le64 major;
2584         __le64 minor;
2585 } __attribute__((packed));
2586
2587 struct gea {
2588         unsigned char name_len;
2589         char name[1];
2590 } __attribute__((packed));
2591
2592 struct gealist {
2593         unsigned long list_len;
2594         struct gea list[1];
2595 } __attribute__((packed));
2596
2597 struct fea {
2598         unsigned char EA_flags;
2599         __u8 name_len;
2600         __le16 value_len;
2601         char name[1];
2602         /* optionally followed by value */
2603 } __attribute__((packed));
2604 /* flags for _FEA.fEA */
2605 #define FEA_NEEDEA         0x80 /* need EA bit */
2606
2607 struct fealist {
2608         __le32 list_len;
2609         struct fea list[1];
2610 } __attribute__((packed));
2611
2612 /* used to hold an arbitrary blob of data */
2613 struct data_blob {
2614         __u8 *data;
2615         size_t length;
2616         void (*free) (struct data_blob *data_blob);
2617 } __attribute__((packed));
2618
2619
2620 #ifdef CONFIG_CIFS_POSIX
2621 /*
2622         For better POSIX semantics from Linux client, (even better
2623         than the existing CIFS Unix Extensions) we need updated PDUs for:
2624
2625         1) PosixCreateX - to set and return the mode, inode#, device info and
2626         perhaps add a CreateDevice - to create Pipes and other special .inodes
2627         Also note POSIX open flags
2628         2) Close - to return the last write time to do cache across close
2629                 more safely
2630         3) FindFirst return unique inode number - what about resume key, two
2631         forms short (matches readdir) and full (enough info to cache inodes)
2632         4) Mkdir - set mode
2633
2634         And under consideration:
2635         5) FindClose2 (return nanosecond timestamp ??)
2636         6) Use nanosecond timestamps throughout all time fields if
2637            corresponding attribute flag is set
2638         7) sendfile - handle based copy
2639
2640         what about fixing 64 bit alignment
2641
2642         There are also various legacy SMB/CIFS requests used as is
2643
2644         From existing Lanman and NTLM dialects:
2645         --------------------------------------
2646         NEGOTIATE
2647         SESSION_SETUP_ANDX (BB which?)
2648         TREE_CONNECT_ANDX (BB which wct?)
2649         TREE_DISCONNECT (BB add volume timestamp on response)
2650         LOGOFF_ANDX
2651         DELETE (note delete open file behavior)
2652         DELETE_DIRECTORY
2653         READ_AND_X
2654         WRITE_AND_X
2655         LOCKING_AND_X (note posix lock semantics)
2656         RENAME (note rename across dirs and open file rename posix behaviors)
2657         NT_RENAME (for hardlinks) Is this good enough for all features?
2658         FIND_CLOSE2
2659         TRANSACTION2 (18 cases)
2660                 SMB_SET_FILE_END_OF_FILE_INFO2 SMB_SET_PATH_END_OF_FILE_INFO2
2661                 (BB verify that never need to set allocation size)
2662                 SMB_SET_FILE_BASIC_INFO2 (setting times - BB can it be done via
2663                          Unix ext?)
2664
2665         COPY (note support for copy across directories) - FUTURE, OPTIONAL
2666         setting/getting OS/2 EAs - FUTURE (BB can this handle
2667         setting Linux xattrs perfectly)         - OPTIONAL
2668         dnotify                                 - FUTURE, OPTIONAL
2669         quota                                   - FUTURE, OPTIONAL
2670
2671         Note that various requests implemented for NT interop such as
2672                 NT_TRANSACT (IOCTL) QueryReparseInfo
2673         are unneeded to servers compliant with the CIFS POSIX extensions
2674
2675         From CIFS Unix Extensions:
2676         -------------------------
2677         T2 SET_PATH_INFO (SMB_SET_FILE_UNIX_LINK) for symlinks
2678         T2 SET_PATH_INFO (SMB_SET_FILE_BASIC_INFO2)
2679         T2 QUERY_PATH_INFO (SMB_QUERY_FILE_UNIX_LINK)
2680         T2 QUERY_PATH_INFO (SMB_QUERY_FILE_UNIX_BASIC)  BB check for missing
2681                                                         inode fields
2682                                 Actually a need QUERY_FILE_UNIX_INFO
2683                                 since has inode num
2684                                 BB what about a) blksize/blkbits/blocks
2685                                                           b) i_version
2686                                                           c) i_rdev
2687                                                           d) notify mask?
2688                                                           e) generation
2689                                                           f) size_seqcount
2690         T2 FIND_FIRST/FIND_NEXT FIND_FILE_UNIX
2691         TRANS2_GET_DFS_REFERRAL               - OPTIONAL but recommended
2692         T2_QFS_INFO QueryDevice/AttributeInfo - OPTIONAL
2693  */
2694
2695 /* xsymlink is a symlink format (used by MacOS) that can be used
2696    to save symlink info in a regular file when
2697    mounted to operating systems that do not
2698    support the cifs Unix extensions or EAs (for xattr
2699    based symlinks).  For such a file to be recognized
2700    as containing symlink data:
2701
2702    1) file size must be 1067,
2703    2) signature must begin file data,
2704    3) length field must be set to ASCII representation
2705         of a number which is less than or equal to 1024,
2706    4) md5 must match that of the path data */
2707
2708 struct xsymlink {
2709         /* 1067 bytes */
2710         char signature[4]; /* XSym */ /* not null terminated */
2711         char cr0;         /* \n */
2712 /* ASCII representation of length (4 bytes decimal) terminated by \n not null */
2713         char length[4];
2714         char cr1;         /* \n */
2715 /* md5 of valid subset of path ie path[0] through path[length-1] */
2716         __u8 md5[32];
2717         char cr2;        /* \n */
2718 /* if room left, then end with \n then 0x20s by convention but not required */
2719         char path[1024];
2720 } __attribute__((packed));
2721
2722 typedef struct file_xattr_info {
2723         /* BB do we need another field for flags? BB */
2724         __u32 xattr_name_len;
2725         __u32 xattr_value_len;
2726         char  xattr_name[0];
2727         /* followed by xattr_value[xattr_value_len], no pad */
2728 } __attribute__((packed)) FILE_XATTR_INFO; /* extended attribute info
2729                                               level 0x205 */
2730
2731 /* flags for lsattr and chflags commands removed arein uapi/linux/fs.h */
2732
2733 typedef struct file_chattr_info {
2734         __le64  mask; /* list of all possible attribute bits */
2735         __le64  mode; /* list of actual attribute bits on this inode */
2736 } __attribute__((packed)) FILE_CHATTR_INFO;  /* ext attributes
2737                                                 (chattr, chflags) level 0x206 */
2738 #endif                          /* POSIX */
2739 #endif                          /* _CIFSPDU_H */