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 SYSTEM_SECURITY       0x01000000  /* The system access control list   */
 244                                           /* can be read and changed          */
 245 #define GENERIC_ALL           0x10000000
 246 #define GENERIC_EXECUTE       0x20000000
 247 #define GENERIC_WRITE         0x40000000
 248 #define GENERIC_READ          0x80000000
 249                                          /* In summary - Relevant file       */
 250                                          /* access flags from CIFS are       */
 251                                          /* file_read_data, file_write_data  */
 252                                          /* file_execute, file_read_attributes*/
 253                                          /* write_dac, and delete.           */
 254
 255 #define FILE_READ_RIGHTS (FILE_READ_DATA | FILE_READ_EA | FILE_READ_ATTRIBUTES)
 256 #define FILE_WRITE_RIGHTS (FILE_WRITE_DATA | FILE_APPEND_DATA \
 257                                 | FILE_WRITE_EA | FILE_WRITE_ATTRIBUTES)
 258 #define FILE_EXEC_RIGHTS (FILE_EXECUTE)
 259
 260 #define SET_FILE_READ_RIGHTS (FILE_READ_DATA | FILE_READ_EA | FILE_WRITE_EA \
 261                                 | FILE_READ_ATTRIBUTES \
 262                                 | FILE_WRITE_ATTRIBUTES \
 263                                 | DELETE | READ_CONTROL | WRITE_DAC \
 264                                 | WRITE_OWNER | SYNCHRONIZE)
 265 #define SET_FILE_WRITE_RIGHTS (FILE_WRITE_DATA | FILE_APPEND_DATA \
 266                                 | FILE_READ_EA | FILE_WRITE_EA \
 267                                 | FILE_READ_ATTRIBUTES \
 268                                 | FILE_WRITE_ATTRIBUTES \
 269                                 | DELETE | READ_CONTROL | WRITE_DAC \
 270                                 | WRITE_OWNER | SYNCHRONIZE)
 271 #define SET_FILE_EXEC_RIGHTS (FILE_READ_EA | FILE_WRITE_EA | FILE_EXECUTE \
 272                                 | FILE_READ_ATTRIBUTES \
 273                                 | FILE_WRITE_ATTRIBUTES \
 274                                 | DELETE | READ_CONTROL | WRITE_DAC \
 275                                 | WRITE_OWNER | SYNCHRONIZE)
 276
 277 #define SET_MINIMUM_RIGHTS (FILE_READ_EA | FILE_READ_ATTRIBUTES \
 278                                 | READ_CONTROL | SYNCHRONIZE)
 279
 280
 281 /*
 282  * Invalid readdir handle
 283  */
 284 #define CIFS_NO_HANDLE        0xFFFF
 285
 286 #define NO_CHANGE_64          0xFFFFFFFFFFFFFFFFULL
 287
 288 /* IPC$ in ASCII */
 289 #define CIFS_IPC_RESOURCE "\x49\x50\x43\x24"
 290
 291 /* IPC$ in Unicode */
 292 #define CIFS_IPC_UNICODE_RESOURCE "\x00\x49\x00\x50\x00\x43\x00\x24\x00\x00"
 293
 294 /* Unicode Null terminate 2 bytes of 0 */
 295 #define UNICODE_NULL "\x00\x00"
 296 #define ASCII_NULL 0x00
 297
 298 /*
 299  * Server type values (returned on EnumServer API
 300  */
 301 #define CIFS_SV_TYPE_DC     0x00000008
 302 #define CIFS_SV_TYPE_BACKDC 0x00000010
 303
 304 /*
 305  * Alias type flags (From EnumAlias API call
 306  */
 307 #define CIFS_ALIAS_TYPE_FILE 0x0001
 308 #define CIFS_SHARE_TYPE_FILE 0x0000
 309
 310 /*
 311  * File Attribute flags
 312  */
 313 #define ATTR_READONLY  0x0001
 314 #define ATTR_HIDDEN    0x0002
 315 #define ATTR_SYSTEM    0x0004
 316 #define ATTR_VOLUME    0x0008
 317 #define ATTR_DIRECTORY 0x0010
 318 #define ATTR_ARCHIVE   0x0020
 319 #define ATTR_DEVICE    0x0040
 320 #define ATTR_NORMAL    0x0080
 321 #define ATTR_TEMPORARY 0x0100
 322 #define ATTR_SPARSE    0x0200
 323 #define ATTR_REPARSE   0x0400
 324 #define ATTR_COMPRESSED 0x0800
 325 #define ATTR_OFFLINE    0x1000  /* ie file not immediately available -
 326                                         on offline storage */
 327 #define ATTR_NOT_CONTENT_INDEXED 0x2000
 328 #define ATTR_ENCRYPTED  0x4000
 329 #define ATTR_POSIX_SEMANTICS 0x01000000
 330 #define ATTR_BACKUP_SEMANTICS 0x02000000
 331 #define ATTR_DELETE_ON_CLOSE 0x04000000
 332 #define ATTR_SEQUENTIAL_SCAN 0x08000000
 333 #define ATTR_RANDOM_ACCESS   0x10000000
 334 #define ATTR_NO_BUFFERING    0x20000000
 335 #define ATTR_WRITE_THROUGH   0x80000000
 336
 337 /* ShareAccess flags */
 338 #define FILE_NO_SHARE     0x00000000
 339 #define FILE_SHARE_READ   0x00000001
 340 #define FILE_SHARE_WRITE  0x00000002
 341 #define FILE_SHARE_DELETE 0x00000004
 342 #define FILE_SHARE_ALL    0x00000007
 343
 344 /* CreateDisposition flags, similar to CreateAction as well */
 345 #define FILE_SUPERSEDE    0x00000000
 346 #define FILE_OPEN         0x00000001
 347 #define FILE_CREATE       0x00000002
 348 #define FILE_OPEN_IF      0x00000003
 349 #define FILE_OVERWRITE    0x00000004
 350 #define FILE_OVERWRITE_IF 0x00000005
 351
 352 /* CreateOptions */
 353 #define CREATE_NOT_FILE         0x00000001      /* if set must not be file */
 354 #define CREATE_WRITE_THROUGH    0x00000002
 355 #define CREATE_SEQUENTIAL       0x00000004
 356 #define CREATE_NO_BUFFER        0x00000008      /* should not buffer on srv */
 357 #define CREATE_SYNC_ALERT       0x00000010      /* MBZ */
 358 #define CREATE_ASYNC_ALERT      0x00000020      /* MBZ */
 359 #define CREATE_NOT_DIR          0x00000040    /* if set must not be directory */
 360 #define CREATE_TREE_CONNECTION  0x00000080      /* should be zero */
 361 #define CREATE_COMPLETE_IF_OPLK 0x00000100      /* should be zero */
 362 #define CREATE_NO_EA_KNOWLEDGE  0x00000200
 363 #define CREATE_EIGHT_DOT_THREE  0x00000400      /* doc says this is obsolete
 364                                                  "open for recovery" flag should
 365                                                  be zero in any case */
 366 #define CREATE_OPEN_FOR_RECOVERY 0x00000400
 367 #define CREATE_RANDOM_ACCESS    0x00000800
 368 #define CREATE_DELETE_ON_CLOSE  0x00001000
 369 #define CREATE_OPEN_BY_ID       0x00002000
 370 #define CREATE_OPEN_BACKUP_INTENT 0x00004000
 371 #define CREATE_NO_COMPRESSION   0x00008000
 372 #define CREATE_RESERVE_OPFILTER 0x00100000      /* should be zero */
 373 #define OPEN_REPARSE_POINT      0x00200000
 374 #define OPEN_NO_RECALL          0x00400000
 375 #define OPEN_FREE_SPACE_QUERY   0x00800000      /* should be zero */
 376 #define CREATE_OPTIONS_MASK     0x007FFFFF
 377 #define CREATE_OPTION_READONLY  0x10000000
 378 #define CREATE_OPTION_SPECIAL   0x20000000   /* system. NB not sent over wire */
 379
 380 /* ImpersonationLevel flags */
 381 #define SECURITY_ANONYMOUS      0
 382 #define SECURITY_IDENTIFICATION 1
 383 #define SECURITY_IMPERSONATION  2
 384 #define SECURITY_DELEGATION     3
 385
 386 /* SecurityFlags */
 387 #define SECURITY_CONTEXT_TRACKING 0x01
 388 #define SECURITY_EFFECTIVE_ONLY   0x02
 389
 390 /*
 391  * Default PID value, used in all SMBs where the PID is not important
 392  */
 393 #define CIFS_DFT_PID  0x1234
 394
 395 /*
 396  * We use the same routine for Copy and Move SMBs.  This flag is used to
 397  * distinguish
 398  */
 399 #define CIFS_COPY_OP 1
 400 #define CIFS_RENAME_OP 2
 401
 402 #define GETU16(var)  (*((__u16 *)var))  /* BB check for endian issues */
 403 #define GETU32(var)  (*((__u32 *)var))  /* BB check for endian issues */
 404
 405 struct smb_hdr {
 406         __be32 smb_buf_length;  /* BB length is only two (rarely three) bytes,
 407                 with one or two byte "type" preceding it that will be
 408                 zero - we could mask the type byte off */
 409         __u8 Protocol[4];
 410         __u8 Command;
 411         union {
 412                 struct {
 413                         __u8 ErrorClass;
 414                         __u8 Reserved;
 415                         __le16 Error;
 416                 } __attribute__((packed)) DosError;
 417                 __le32 CifsError;
 418         } __attribute__((packed)) Status;
 419         __u8 Flags;
 420         __le16 Flags2;          /* note: le */
 421         __le16 PidHigh;
 422         union {
 423                 struct {
 424                         __le32 SequenceNumber;  /* le */
 425                         __u32 Reserved; /* zero */
 426                 } __attribute__((packed)) Sequence;
 427                 __u8 SecuritySignature[8];      /* le */
 428         } __attribute__((packed)) Signature;
 429         __u8 pad[2];
 430         __u16 Tid;
 431         __le16 Pid;
 432         __u16 Uid;
 433         __le16 Mid;
 434         __u8 WordCount;
 435 } __attribute__((packed));
 436
 437 /* given a pointer to an smb_hdr, retrieve a void pointer to the ByteCount */
 438 static inline void *
 439 BCC(struct smb_hdr *smb)
 440 {
 441         return (void *)smb + sizeof(*smb) + 2 * smb->WordCount;
 442 }
 443
 444 /* given a pointer to an smb_hdr retrieve the pointer to the byte area */
 445 #define pByteArea(smb_var) (BCC(smb_var) + 2)
 446
 447 /* get the unconverted ByteCount for a SMB packet and return it */
 448 static inline __u16
 449 get_bcc(struct smb_hdr *hdr)
 450 {
 451         __le16 *bc_ptr = (__le16 *)BCC(hdr);
 452
 453         return get_unaligned_le16(bc_ptr);
 454 }
 455
 456 /* set the ByteCount for a SMB packet in little-endian */
 457 static inline void
 458 put_bcc(__u16 count, struct smb_hdr *hdr)
 459 {
 460         __le16 *bc_ptr = (__le16 *)BCC(hdr);
 461
 462         put_unaligned_le16(count, bc_ptr);
 463 }
 464
 465 /*
 466  * Computer Name Length (since Netbios name was length 16 with last byte 0x20)
 467  * No longer as important, now that TCP names are more commonly used to
 468  * resolve hosts.
 469  */
 470 #define CNLEN 15
 471
 472 /*
 473  * Share Name Length (SNLEN)
 474  * Note:  This length was limited by the SMB used to get
 475  *        the Share info.   NetShareEnum only returned 13
 476  *        chars, including the null termination.
 477  * This was removed because it no longer is limiting.
 478  */
 479
 480 /*
 481  * Comment Length
 482  */
 483 #define MAXCOMMENTLEN 40
 484
 485 /*
 486  * The OS/2 maximum path name
 487  */
 488 #define MAX_PATHCONF 256
 489
 490 /*
 491  *  SMB frame definitions  (following must be packed structs)
 492  *  See the SNIA CIFS Specification for details.
 493  *
 494  *  The Naming convention is the lower case version of the
 495  *  smb command code name for the struct and this is typedef to the
 496  *  uppercase version of the same name with the prefix SMB_ removed
 497  *  for brevity.  Although typedefs are not commonly used for
 498  *  structure definitions in the Linux kernel, their use in the
 499  *  CIFS standards document, which this code is based on, may
 500  *  make this one of the cases where typedefs for structures make
 501  *  sense to improve readability for readers of the standards doc.
 502  *  Typedefs can always be removed later if they are too distracting
 503  *  and they are only used for the CIFSs PDUs themselves, not
 504  *  internal cifs vfs structures
 505  *
 506  */
 507
 508 typedef struct negotiate_req {
 509         struct smb_hdr hdr;     /* wct = 0 */
 510         __le16 ByteCount;
 511         unsigned char DialectsArray[1];
 512 } __attribute__((packed)) NEGOTIATE_REQ;
 513
 514 /* Dialect index is 13 for LANMAN */
 515
 516 #define MIN_TZ_ADJ (15 * 60) /* minimum grid for timezones in seconds */
 517
 518 typedef struct lanman_neg_rsp {
 519         struct smb_hdr hdr;     /* wct = 13 */
 520         __le16 DialectIndex;
 521         __le16 SecurityMode;
 522         __le16 MaxBufSize;
 523         __le16 MaxMpxCount;
 524         __le16 MaxNumberVcs;
 525         __le16 RawMode;
 526         __le32 SessionKey;
 527         struct {
 528                 __le16 Time;
 529                 __le16 Date;
 530         } __attribute__((packed)) SrvTime;
 531         __le16 ServerTimeZone;
 532         __le16 EncryptionKeyLength;
 533         __le16 Reserved;
 534         __u16  ByteCount;
 535         unsigned char EncryptionKey[1];
 536 } __attribute__((packed)) LANMAN_NEG_RSP;
 537
 538 #define READ_RAW_ENABLE 1
 539 #define WRITE_RAW_ENABLE 2
 540 #define RAW_ENABLE (READ_RAW_ENABLE | WRITE_RAW_ENABLE)
 541 #define SMB1_CLIENT_GUID_SIZE (16)
 542 typedef struct negotiate_rsp {
 543         struct smb_hdr hdr;     /* wct = 17 */
 544         __le16 DialectIndex; /* 0xFFFF = no dialect acceptable */
 545         __u8 SecurityMode;
 546         __le16 MaxMpxCount;
 547         __le16 MaxNumberVcs;
 548         __le32 MaxBufferSize;
 549         __le32 MaxRawSize;
 550         __le32 SessionKey;
 551         __le32 Capabilities;    /* see below */
 552         __le32 SystemTimeLow;
 553         __le32 SystemTimeHigh;
 554         __le16 ServerTimeZone;
 555         __u8 EncryptionKeyLength;
 556         __u16 ByteCount;
 557         union {
 558                 unsigned char EncryptionKey[1]; /* cap extended security off */
 559                 /* followed by Domain name - if extended security is off */
 560                 /* followed by 16 bytes of server GUID */
 561                 /* then security blob if cap_extended_security negotiated */
 562                 struct {
 563                         unsigned char GUID[SMB1_CLIENT_GUID_SIZE];
 564                         unsigned char SecurityBlob[1];
 565                 } __attribute__((packed)) extended_response;
 566         } __attribute__((packed)) u;
 567 } __attribute__((packed)) NEGOTIATE_RSP;
 568
 569 /* SecurityMode bits */
 570 #define SECMODE_USER          0x01      /* off indicates share level security */
 571 #define SECMODE_PW_ENCRYPT    0x02
 572 #define SECMODE_SIGN_ENABLED  0x04      /* SMB security signatures enabled */
 573 #define SECMODE_SIGN_REQUIRED 0x08      /* SMB security signatures required */
 574
 575 /* Negotiate response Capabilities */
 576 #define CAP_RAW_MODE           0x00000001
 577 #define CAP_MPX_MODE           0x00000002
 578 #define CAP_UNICODE            0x00000004
 579 #define CAP_LARGE_FILES        0x00000008
 580 #define CAP_NT_SMBS            0x00000010       /* implies CAP_NT_FIND */
 581 #define CAP_RPC_REMOTE_APIS    0x00000020
 582 #define CAP_STATUS32           0x00000040
 583 #define CAP_LEVEL_II_OPLOCKS   0x00000080
 584 #define CAP_LOCK_AND_READ      0x00000100
 585 #define CAP_NT_FIND            0x00000200
 586 #define CAP_DFS                0x00001000
 587 #define CAP_INFOLEVEL_PASSTHRU 0x00002000
 588 #define CAP_LARGE_READ_X       0x00004000
 589 #define CAP_LARGE_WRITE_X      0x00008000
 590 #define CAP_LWIO               0x00010000 /* support fctl_srv_req_resume_key */
 591 #define CAP_UNIX               0x00800000
 592 #define CAP_COMPRESSED_DATA    0x02000000
 593 #define CAP_DYNAMIC_REAUTH     0x20000000
 594 #define CAP_PERSISTENT_HANDLES 0x40000000
 595 #define CAP_EXTENDED_SECURITY  0x80000000
 596
 597 typedef union smb_com_session_setup_andx {
 598         struct {                /* request format */
 599                 struct smb_hdr hdr;     /* wct = 12 */
 600                 __u8 AndXCommand;
 601                 __u8 AndXReserved;
 602                 __le16 AndXOffset;
 603                 __le16 MaxBufferSize;
 604                 __le16 MaxMpxCount;
 605                 __le16 VcNumber;
 606                 __u32 SessionKey;
 607                 __le16 SecurityBlobLength;
 608                 __u32 Reserved;
 609                 __le32 Capabilities;    /* see below */
 610                 __le16 ByteCount;
 611                 unsigned char SecurityBlob[1];  /* followed by */
 612                 /* STRING NativeOS */
 613                 /* STRING NativeLanMan */
 614         } __attribute__((packed)) req;  /* NTLM request format (with
 615                                         extended security */
 616
 617         struct {                /* request format */
 618                 struct smb_hdr hdr;     /* wct = 13 */
 619                 __u8 AndXCommand;
 620                 __u8 AndXReserved;
 621                 __le16 AndXOffset;
 622                 __le16 MaxBufferSize;
 623                 __le16 MaxMpxCount;
 624                 __le16 VcNumber;
 625                 __u32 SessionKey;
 626                 __le16 CaseInsensitivePasswordLength; /* ASCII password len */
 627                 __le16 CaseSensitivePasswordLength; /* Unicode password length*/
 628                 __u32 Reserved; /* see below */
 629                 __le32 Capabilities;
 630                 __le16 ByteCount;
 631                 unsigned char CaseInsensitivePassword[1];     /* followed by: */
 632                 /* unsigned char * CaseSensitivePassword; */
 633                 /* STRING AccountName */
 634                 /* STRING PrimaryDomain */
 635                 /* STRING NativeOS */
 636                 /* STRING NativeLanMan */
 637         } __attribute__((packed)) req_no_secext; /* NTLM request format (without
 638                                                         extended security */
 639
 640         struct {                /* default (NTLM) response format */
 641                 struct smb_hdr hdr;     /* wct = 4 */
 642                 __u8 AndXCommand;
 643                 __u8 AndXReserved;
 644                 __le16 AndXOffset;
 645                 __le16 Action;  /* see below */
 646                 __le16 SecurityBlobLength;
 647                 __u16 ByteCount;
 648                 unsigned char SecurityBlob[1];  /* followed by */
 649 /*      unsigned char  * NativeOS;      */
 650 /*      unsigned char  * NativeLanMan;  */
 651 /*      unsigned char  * PrimaryDomain; */
 652         } __attribute__((packed)) resp; /* NTLM response
 653                                            (with or without extended sec) */
 654
 655         struct {                /* request format */
 656                 struct smb_hdr hdr;     /* wct = 10 */
 657                 __u8 AndXCommand;
 658                 __u8 AndXReserved;
 659                 __le16 AndXOffset;
 660                 __le16 MaxBufferSize;
 661                 __le16 MaxMpxCount;
 662                 __le16 VcNumber;
 663                 __u32 SessionKey;
 664                 __le16 PasswordLength;
 665                 __u32 Reserved; /* encrypt key len and offset */
 666                 __le16 ByteCount;
 667                 unsigned char AccountPassword[1];       /* followed by */
 668                 /* STRING AccountName */
 669                 /* STRING PrimaryDomain */
 670                 /* STRING NativeOS */
 671                 /* STRING NativeLanMan */
 672         } __attribute__((packed)) old_req; /* pre-NTLM (LANMAN2.1) req format */
 673
 674         struct {                /* default (NTLM) response format */
 675                 struct smb_hdr hdr;     /* wct = 3 */
 676                 __u8 AndXCommand;
 677                 __u8 AndXReserved;
 678                 __le16 AndXOffset;
 679                 __le16 Action;  /* see below */
 680                 __u16 ByteCount;
 681                 unsigned char NativeOS[1];      /* followed by */
 682 /*      unsigned char * NativeLanMan; */
 683 /*      unsigned char * PrimaryDomain; */
 684         } __attribute__((packed)) old_resp; /* pre-NTLM (LANMAN2.1) response */
 685 } __attribute__((packed)) SESSION_SETUP_ANDX;
 686
 687 /* format of NLTMv2 Response ie "case sensitive password" hash when NTLMv2 */
 688
 689 #define NTLMSSP_SERVER_TYPE     1
 690 #define NTLMSSP_DOMAIN_TYPE     2
 691 #define NTLMSSP_FQ_DOMAIN_TYPE  3
 692 #define NTLMSSP_DNS_DOMAIN_TYPE 4
 693 #define NTLMSSP_DNS_PARENT_TYPE 5
 694
 695 struct ntlmssp2_name {
 696         __le16 type;
 697         __le16 length;
 698 /*      char   name[length]; */
 699 } __attribute__((packed));
 700
 701 struct ntlmv2_resp {
 702         union {
 703             char ntlmv2_hash[CIFS_ENCPWD_SIZE];
 704             struct {
 705                 __u8 reserved[8];
 706                 __u8 key[CIFS_SERVER_CHALLENGE_SIZE];
 707             } __attribute__((packed)) challenge;
 708         } __attribute__((packed));
 709         __le32 blob_signature;
 710         __u32  reserved;
 711         __le64  time;
 712         __u64  client_chal; /* random */
 713         __u32  reserved2;
 714         /* array of name entries could follow ending in minimum 4 byte struct */
 715 } __attribute__((packed));
 716
 717
 718 #define CIFS_NETWORK_OPSYS "CIFS VFS Client for Linux"
 719
 720 /* Capabilities bits (for NTLM SessSetup request) */
 721 #define CAP_UNICODE            0x00000004
 722 #define CAP_LARGE_FILES        0x00000008
 723 #define CAP_NT_SMBS            0x00000010
 724 #define CAP_STATUS32           0x00000040
 725 #define CAP_LEVEL_II_OPLOCKS   0x00000080
 726 #define CAP_NT_FIND            0x00000200       /* reserved should be zero
 727                                 (because NT_SMBs implies the same thing?) */
 728 #define CAP_BULK_TRANSFER      0x20000000
 729 #define CAP_EXTENDED_SECURITY  0x80000000
 730
 731 /* Action bits */
 732 #define GUEST_LOGIN 1
 733
 734 typedef struct smb_com_tconx_req {
 735         struct smb_hdr hdr;     /* wct = 4 */
 736         __u8 AndXCommand;
 737         __u8 AndXReserved;
 738         __le16 AndXOffset;
 739         __le16 Flags;           /* see below */
 740         __le16 PasswordLength;
 741         __le16 ByteCount;
 742         unsigned char Password[1];      /* followed by */
 743 /* STRING Path    *//* \\server\share name */
 744         /* STRING Service */
 745 } __attribute__((packed)) TCONX_REQ;
 746
 747 typedef struct smb_com_tconx_rsp {
 748         struct smb_hdr hdr;     /* wct = 3 , not extended response */
 749         __u8 AndXCommand;
 750         __u8 AndXReserved;
 751         __le16 AndXOffset;
 752         __le16 OptionalSupport; /* see below */
 753         __u16 ByteCount;
 754         unsigned char Service[1];       /* always ASCII, not Unicode */
 755         /* STRING NativeFileSystem */
 756 } __attribute__((packed)) TCONX_RSP;
 757
 758 typedef struct smb_com_tconx_rsp_ext {
 759         struct smb_hdr hdr;     /* wct = 7, extended response */
 760         __u8 AndXCommand;
 761         __u8 AndXReserved;
 762         __le16 AndXOffset;
 763         __le16 OptionalSupport; /* see below */
 764         __le32 MaximalShareAccessRights;
 765         __le32 GuestMaximalShareAccessRights;
 766         __u16 ByteCount;
 767         unsigned char Service[1];       /* always ASCII, not Unicode */
 768         /* STRING NativeFileSystem */
 769 } __attribute__((packed)) TCONX_RSP_EXT;
 770
 771
 772 /* tree connect Flags */
 773 #define DISCONNECT_TID          0x0001
 774 #define TCON_EXTENDED_SIGNATURES 0x0004
 775 #define TCON_EXTENDED_SECINFO   0x0008
 776
 777 /* OptionalSupport bits */
 778 #define SMB_SUPPORT_SEARCH_BITS 0x0001  /* "must have" directory search bits
 779                                          (exclusive searches supported) */
 780 #define SMB_SHARE_IS_IN_DFS     0x0002
 781 #define SMB_CSC_MASK               0x000C
 782 /* CSC flags defined as follows */
 783 #define SMB_CSC_CACHE_MANUAL_REINT 0x0000
 784 #define SMB_CSC_CACHE_AUTO_REINT   0x0004
 785 #define SMB_CSC_CACHE_VDO          0x0008
 786 #define SMB_CSC_NO_CACHING         0x000C
 787 #define SMB_UNIQUE_FILE_NAME    0x0010
 788 #define SMB_EXTENDED_SIGNATURES 0x0020
 789
 790 /* services
 791  *
 792  * A:       ie disk
 793  * LPT1:    ie printer
 794  * IPC      ie named pipe
 795  * COMM
 796  * ?????    ie any type
 797  *
 798  */
 799
 800 typedef struct smb_com_echo_req {
 801         struct  smb_hdr hdr;
 802         __le16  EchoCount;
 803         __le16  ByteCount;
 804         char    Data[1];
 805 } __attribute__((packed)) ECHO_REQ;
 806
 807 typedef struct smb_com_echo_rsp {
 808         struct  smb_hdr hdr;
 809         __le16  SequenceNumber;
 810         __le16  ByteCount;
 811         char    Data[1];
 812 } __attribute__((packed)) ECHO_RSP;
 813
 814 typedef struct smb_com_logoff_andx_req {
 815         struct smb_hdr hdr;     /* wct = 2 */
 816         __u8 AndXCommand;
 817         __u8 AndXReserved;
 818         __u16 AndXOffset;
 819         __u16 ByteCount;
 820 } __attribute__((packed)) LOGOFF_ANDX_REQ;
 821
 822 typedef struct smb_com_logoff_andx_rsp {
 823         struct smb_hdr hdr;     /* wct = 2 */
 824         __u8 AndXCommand;
 825         __u8 AndXReserved;
 826         __u16 AndXOffset;
 827         __u16 ByteCount;
 828 } __attribute__((packed)) LOGOFF_ANDX_RSP;
 829
 830 typedef union smb_com_tree_disconnect { /* as an altetnative can use flag on
 831                                         tree_connect PDU to effect disconnect */
 832                                         /* tdis is probably simplest SMB PDU */
 833         struct {
 834                 struct smb_hdr hdr;     /* wct = 0 */
 835                 __u16 ByteCount;        /* bcc = 0 */
 836         } __attribute__((packed)) req;
 837         struct {
 838                 struct smb_hdr hdr;     /* wct = 0 */
 839                 __u16 ByteCount;        /* bcc = 0 */
 840         } __attribute__((packed)) resp;
 841 } __attribute__((packed)) TREE_DISCONNECT;
 842
 843 typedef struct smb_com_close_req {
 844         struct smb_hdr hdr;     /* wct = 3 */
 845         __u16 FileID;
 846         __u32 LastWriteTime;    /* should be zero or -1 */
 847         __u16 ByteCount;        /* 0 */
 848 } __attribute__((packed)) CLOSE_REQ;
 849
 850 typedef struct smb_com_close_rsp {
 851         struct smb_hdr hdr;     /* wct = 0 */
 852         __u16 ByteCount;        /* bct = 0 */
 853 } __attribute__((packed)) CLOSE_RSP;
 854
 855 typedef struct smb_com_flush_req {
 856         struct smb_hdr hdr;     /* wct = 1 */
 857         __u16 FileID;
 858         __u16 ByteCount;        /* 0 */
 859 } __attribute__((packed)) FLUSH_REQ;
 860
 861 typedef struct smb_com_findclose_req {
 862         struct smb_hdr hdr; /* wct = 1 */
 863         __u16 FileID;
 864         __u16 ByteCount;    /* 0 */
 865 } __attribute__((packed)) FINDCLOSE_REQ;
 866
 867 /* OpenFlags */
 868 #define REQ_MORE_INFO      0x00000001  /* legacy (OPEN_AND_X) only */
 869 #define REQ_OPLOCK         0x00000002
 870 #define REQ_BATCHOPLOCK    0x00000004
 871 #define REQ_OPENDIRONLY    0x00000008
 872 #define REQ_EXTENDED_INFO  0x00000010
 873
 874 /* File type */
 875 #define DISK_TYPE               0x0000
 876 #define BYTE_PIPE_TYPE          0x0001
 877 #define MESSAGE_PIPE_TYPE       0x0002
 878 #define PRINTER_TYPE            0x0003
 879 #define COMM_DEV_TYPE           0x0004
 880 #define UNKNOWN_TYPE            0xFFFF
 881
 882 /* Device Type or File Status Flags */
 883 #define NO_EAS                  0x0001
 884 #define NO_SUBSTREAMS           0x0002
 885 #define NO_REPARSETAG           0x0004
 886 /* following flags can apply if pipe */
 887 #define ICOUNT_MASK             0x00FF
 888 #define PIPE_READ_MODE          0x0100
 889 #define NAMED_PIPE_TYPE         0x0400
 890 #define PIPE_END_POINT          0x4000
 891 #define BLOCKING_NAMED_PIPE     0x8000
 892
 893 typedef struct smb_com_open_req {       /* also handles create */
 894         struct smb_hdr hdr;     /* wct = 24 */
 895         __u8 AndXCommand;
 896         __u8 AndXReserved;
 897         __le16 AndXOffset;
 898         __u8 Reserved;          /* Must Be Zero */
 899         __le16 NameLength;
 900         __le32 OpenFlags;
 901         __u32  RootDirectoryFid;
 902         __le32 DesiredAccess;
 903         __le64 AllocationSize;
 904         __le32 FileAttributes;
 905         __le32 ShareAccess;
 906         __le32 CreateDisposition;
 907         __le32 CreateOptions;
 908         __le32 ImpersonationLevel;
 909         __u8 SecurityFlags;
 910         __le16 ByteCount;
 911         char fileName[1];
 912 } __attribute__((packed)) OPEN_REQ;
 913
 914 /* open response: oplock levels */
 915 #define OPLOCK_NONE      0
 916 #define OPLOCK_EXCLUSIVE 1
 917 #define OPLOCK_BATCH     2
 918 #define OPLOCK_READ      3  /* level 2 oplock */
 919
 920 /* open response for CreateAction shifted left */
 921 #define CIFS_CREATE_ACTION 0x20000 /* file created */
 922
 923 typedef struct smb_com_open_rsp {
 924         struct smb_hdr hdr;     /* wct = 34 BB */
 925         __u8 AndXCommand;
 926         __u8 AndXReserved;
 927         __le16 AndXOffset;
 928         __u8 OplockLevel;
 929         __u16 Fid;
 930         __le32 CreateAction;
 931         __le64 CreationTime;
 932         __le64 LastAccessTime;
 933         __le64 LastWriteTime;
 934         __le64 ChangeTime;
 935         __le32 FileAttributes;
 936         __le64 AllocationSize;
 937         __le64 EndOfFile;
 938         __le16 FileType;
 939         __le16 DeviceState;
 940         __u8 DirectoryFlag;
 941         __u16 ByteCount;        /* bct = 0 */
 942 } __attribute__((packed)) OPEN_RSP;
 943
 944 typedef struct smb_com_open_rsp_ext {
 945         struct smb_hdr hdr;     /* wct = 42 but meaningless due to MS bug? */
 946         __u8 AndXCommand;
 947         __u8 AndXReserved;
 948         __le16 AndXOffset;
 949         __u8 OplockLevel;
 950         __u16 Fid;
 951         __le32 CreateAction;
 952         __le64 CreationTime;
 953         __le64 LastAccessTime;
 954         __le64 LastWriteTime;
 955         __le64 ChangeTime;
 956         __le32 FileAttributes;
 957         __le64 AllocationSize;
 958         __le64 EndOfFile;
 959         __le16 FileType;
 960         __le16 DeviceState;
 961         __u8 DirectoryFlag;
 962         __u8 VolumeGUID[16];
 963         __u64 FileId; /* note no endian conversion - is opaque UniqueID */
 964         __le32 MaximalAccessRights;
 965         __le32 GuestMaximalAccessRights;
 966         __u16 ByteCount;        /* bct = 0 */
 967 } __attribute__((packed)) OPEN_RSP_EXT;
 968
 969
 970 /* format of legacy open request */
 971 typedef struct smb_com_openx_req {
 972         struct smb_hdr  hdr;    /* wct = 15 */
 973         __u8 AndXCommand;
 974         __u8 AndXReserved;
 975         __le16 AndXOffset;
 976         __le16 OpenFlags;
 977         __le16 Mode;
 978         __le16 Sattr; /* search attributes */
 979         __le16 FileAttributes;  /* dos attrs */
 980         __le32 CreateTime; /* os2 format */
 981         __le16 OpenFunction;
 982         __le32 EndOfFile;
 983         __le32 Timeout;
 984         __le32 Reserved;
 985         __le16  ByteCount;  /* file name follows */
 986         char   fileName[1];
 987 } __attribute__((packed)) OPENX_REQ;
 988
 989 typedef struct smb_com_openx_rsp {
 990         struct smb_hdr  hdr;    /* wct = 15 */
 991         __u8 AndXCommand;
 992         __u8 AndXReserved;
 993         __le16 AndXOffset;
 994         __u16  Fid;
 995         __le16 FileAttributes;
 996         __le32 LastWriteTime; /* os2 format */
 997         __le32 EndOfFile;
 998         __le16 Access;
 999         __le16 FileType;
1000         __le16 IPCState;
1001         __le16 Action;
1002         __u32  FileId;
1003         __u16  Reserved;
1004         __u16  ByteCount;
1005 } __attribute__((packed)) OPENX_RSP;
1006
1007 /* For encoding of POSIX Open Request - see trans2 function 0x209 data struct */
1008
1009 /* Legacy write request for older servers */
1010 typedef struct smb_com_writex_req {
1011         struct smb_hdr hdr;     /* wct = 12 */
1012         __u8 AndXCommand;
1013         __u8 AndXReserved;
1014         __le16 AndXOffset;
1015         __u16 Fid;
1016         __le32 OffsetLow;
1017         __u32 Reserved; /* Timeout */
1018         __le16 WriteMode; /* 1 = write through */
1019         __le16 Remaining;
1020         __le16 Reserved2;
1021         __le16 DataLengthLow;
1022         __le16 DataOffset;
1023         __le16 ByteCount;
1024         __u8 Pad;               /* BB check for whether padded to DWORD
1025                                    boundary and optimum performance here */
1026         char Data[];
1027 } __attribute__((packed)) WRITEX_REQ;
1028
1029 typedef struct smb_com_write_req {
1030         struct smb_hdr hdr;     /* wct = 14 */
1031         __u8 AndXCommand;
1032         __u8 AndXReserved;
1033         __le16 AndXOffset;
1034         __u16 Fid;
1035         __le32 OffsetLow;
1036         __u32 Reserved;
1037         __le16 WriteMode;
1038         __le16 Remaining;
1039         __le16 DataLengthHigh;
1040         __le16 DataLengthLow;
1041         __le16 DataOffset;
1042         __le32 OffsetHigh;
1043         __le16 ByteCount;
1044         __u8 Pad;               /* BB check for whether padded to DWORD
1045                                    boundary and optimum performance here */
1046         char Data[];
1047 } __attribute__((packed)) WRITE_REQ;
1048
1049 typedef struct smb_com_write_rsp {
1050         struct smb_hdr hdr;     /* wct = 6 */
1051         __u8 AndXCommand;
1052         __u8 AndXReserved;
1053         __le16 AndXOffset;
1054         __le16 Count;
1055         __le16 Remaining;
1056         __le16 CountHigh;
1057         __u16  Reserved;
1058         __u16 ByteCount;
1059 } __attribute__((packed)) WRITE_RSP;
1060
1061 /* legacy read request for older servers */
1062 typedef struct smb_com_readx_req {
1063         struct smb_hdr hdr;     /* wct = 10 */
1064         __u8 AndXCommand;
1065         __u8 AndXReserved;
1066         __le16 AndXOffset;
1067         __u16 Fid;
1068         __le32 OffsetLow;
1069         __le16 MaxCount;
1070         __le16 MinCount;        /* obsolete */
1071         __le32 Reserved;
1072         __le16 Remaining;
1073         __le16 ByteCount;
1074 } __attribute__((packed)) READX_REQ;
1075
1076 typedef struct smb_com_read_req {
1077         struct smb_hdr hdr;     /* wct = 12 */
1078         __u8 AndXCommand;
1079         __u8 AndXReserved;
1080         __le16 AndXOffset;
1081         __u16 Fid;
1082         __le32 OffsetLow;
1083         __le16 MaxCount;
1084         __le16 MinCount;                /* obsolete */
1085         __le32 MaxCountHigh;
1086         __le16 Remaining;
1087         __le32 OffsetHigh;
1088         __le16 ByteCount;
1089 } __attribute__((packed)) READ_REQ;
1090
1091 typedef struct smb_com_read_rsp {
1092         struct smb_hdr hdr;     /* wct = 12 */
1093         __u8 AndXCommand;
1094         __u8 AndXReserved;
1095         __le16 AndXOffset;
1096         __le16 Remaining;
1097         __le16 DataCompactionMode;
1098         __le16 Reserved;
1099         __le16 DataLength;
1100         __le16 DataOffset;
1101         __le16 DataLengthHigh;
1102         __u64 Reserved2;
1103         __u16 ByteCount;
1104         /* read response data immediately follows */
1105 } __attribute__((packed)) READ_RSP;
1106
1107 typedef struct locking_andx_range {
1108         __le16 Pid;
1109         __le16 Pad;
1110         __le32 OffsetHigh;
1111         __le32 OffsetLow;
1112         __le32 LengthHigh;
1113         __le32 LengthLow;
1114 } __attribute__((packed)) LOCKING_ANDX_RANGE;
1115
1116 #define LOCKING_ANDX_SHARED_LOCK     0x01
1117 #define LOCKING_ANDX_OPLOCK_RELEASE  0x02
1118 #define LOCKING_ANDX_CHANGE_LOCKTYPE 0x04
1119 #define LOCKING_ANDX_CANCEL_LOCK     0x08
1120 #define LOCKING_ANDX_LARGE_FILES     0x10       /* always on for us */
1121
1122 typedef struct smb_com_lock_req {
1123         struct smb_hdr hdr;     /* wct = 8 */
1124         __u8 AndXCommand;
1125         __u8 AndXReserved;
1126         __le16 AndXOffset;
1127         __u16 Fid;
1128         __u8 LockType;
1129         __u8 OplockLevel;
1130         __le32 Timeout;
1131         __le16 NumberOfUnlocks;
1132         __le16 NumberOfLocks;
1133         __le16 ByteCount;
1134         LOCKING_ANDX_RANGE Locks[1];
1135 } __attribute__((packed)) LOCK_REQ;
1136
1137 /* lock type */
1138 #define CIFS_RDLCK      0
1139 #define CIFS_WRLCK      1
1140 #define CIFS_UNLCK      2
1141 typedef struct cifs_posix_lock {
1142         __le16  lock_type;  /* 0 = Read, 1 = Write, 2 = Unlock */
1143         __le16  lock_flags; /* 1 = Wait (only valid for setlock) */
1144         __le32  pid;
1145         __le64  start;
1146         __le64  length;
1147         /* BB what about additional owner info to identify network client */
1148 } __attribute__((packed)) CIFS_POSIX_LOCK;
1149
1150 typedef struct smb_com_lock_rsp {
1151         struct smb_hdr hdr;     /* wct = 2 */
1152         __u8 AndXCommand;
1153         __u8 AndXReserved;
1154         __le16 AndXOffset;
1155         __u16 ByteCount;
1156 } __attribute__((packed)) LOCK_RSP;
1157
1158 typedef struct smb_com_rename_req {
1159         struct smb_hdr hdr;     /* wct = 1 */
1160         __le16 SearchAttributes;        /* target file attributes */
1161         __le16 ByteCount;
1162         __u8 BufferFormat;      /* 4 = ASCII or Unicode */
1163         unsigned char OldFileName[1];
1164         /* followed by __u8 BufferFormat2 */
1165         /* followed by NewFileName */
1166 } __attribute__((packed)) RENAME_REQ;
1167
1168         /* copy request flags */
1169 #define COPY_MUST_BE_FILE      0x0001
1170 #define COPY_MUST_BE_DIR       0x0002
1171 #define COPY_TARGET_MODE_ASCII 0x0004 /* if not set, binary */
1172 #define COPY_SOURCE_MODE_ASCII 0x0008 /* if not set, binary */
1173 #define COPY_VERIFY_WRITES     0x0010
1174 #define COPY_TREE              0x0020
1175
1176 typedef struct smb_com_copy_req {
1177         struct smb_hdr hdr;     /* wct = 3 */
1178         __u16 Tid2;
1179         __le16 OpenFunction;
1180         __le16 Flags;
1181         __le16 ByteCount;
1182         __u8 BufferFormat;      /* 4 = ASCII or Unicode */
1183         unsigned char OldFileName[1];
1184         /* followed by __u8 BufferFormat2 */
1185         /* followed by NewFileName string */
1186 } __attribute__((packed)) COPY_REQ;
1187
1188 typedef struct smb_com_copy_rsp {
1189         struct smb_hdr hdr;     /* wct = 1 */
1190         __le16 CopyCount;    /* number of files copied */
1191         __u16 ByteCount;    /* may be zero */
1192         __u8 BufferFormat;  /* 0x04 - only present if errored file follows */
1193         unsigned char ErrorFileName[1]; /* only present if error in copy */
1194 } __attribute__((packed)) COPY_RSP;
1195
1196 #define CREATE_HARD_LINK                0x103
1197 #define MOVEFILE_COPY_ALLOWED           0x0002
1198 #define MOVEFILE_REPLACE_EXISTING       0x0001
1199
1200 typedef struct smb_com_nt_rename_req {  /* A5 - also used for create hardlink */
1201         struct smb_hdr hdr;     /* wct = 4 */
1202         __le16 SearchAttributes;        /* target file attributes */
1203         __le16 Flags;           /* spec says Information Level */
1204         __le32 ClusterCount;
1205         __le16 ByteCount;
1206         __u8 BufferFormat;      /* 4 = ASCII or Unicode */
1207         unsigned char OldFileName[1];
1208         /* followed by __u8 BufferFormat2 */
1209         /* followed by NewFileName */
1210 } __attribute__((packed)) NT_RENAME_REQ;
1211
1212 typedef struct smb_com_rename_rsp {
1213         struct smb_hdr hdr;     /* wct = 0 */
1214         __u16 ByteCount;        /* bct = 0 */
1215 } __attribute__((packed)) RENAME_RSP;
1216
1217 typedef struct smb_com_delete_file_req {
1218         struct smb_hdr hdr;     /* wct = 1 */
1219         __le16 SearchAttributes;
1220         __le16 ByteCount;
1221         __u8 BufferFormat;      /* 4 = ASCII */
1222         unsigned char fileName[1];
1223 } __attribute__((packed)) DELETE_FILE_REQ;
1224
1225 typedef struct smb_com_delete_file_rsp {
1226         struct smb_hdr hdr;     /* wct = 0 */
1227         __u16 ByteCount;        /* bct = 0 */
1228 } __attribute__((packed)) DELETE_FILE_RSP;
1229
1230 typedef struct smb_com_delete_directory_req {
1231         struct smb_hdr hdr;     /* wct = 0 */
1232         __le16 ByteCount;
1233         __u8 BufferFormat;      /* 4 = ASCII */
1234         unsigned char DirName[1];
1235 } __attribute__((packed)) DELETE_DIRECTORY_REQ;
1236
1237 typedef struct smb_com_delete_directory_rsp {
1238         struct smb_hdr hdr;     /* wct = 0 */
1239         __u16 ByteCount;        /* bct = 0 */
1240 } __attribute__((packed)) DELETE_DIRECTORY_RSP;
1241
1242 typedef struct smb_com_create_directory_req {
1243         struct smb_hdr hdr;     /* wct = 0 */
1244         __le16 ByteCount;
1245         __u8 BufferFormat;      /* 4 = ASCII */
1246         unsigned char DirName[1];
1247 } __attribute__((packed)) CREATE_DIRECTORY_REQ;
1248
1249 typedef struct smb_com_create_directory_rsp {
1250         struct smb_hdr hdr;     /* wct = 0 */
1251         __u16 ByteCount;        /* bct = 0 */
1252 } __attribute__((packed)) CREATE_DIRECTORY_RSP;
1253
1254 typedef struct smb_com_query_information_req {
1255         struct smb_hdr hdr;     /* wct = 0 */
1256         __le16 ByteCount;       /* 1 + namelen + 1 */
1257         __u8 BufferFormat;      /* 4 = ASCII */
1258         unsigned char FileName[1];
1259 } __attribute__((packed)) QUERY_INFORMATION_REQ;
1260
1261 typedef struct smb_com_query_information_rsp {
1262         struct smb_hdr hdr;     /* wct = 10 */
1263         __le16 attr;
1264         __le32  last_write_time;
1265         __le32 size;
1266         __u16  reserved[5];
1267         __le16 ByteCount;       /* bcc = 0 */
1268 } __attribute__((packed)) QUERY_INFORMATION_RSP;
1269
1270 typedef struct smb_com_setattr_req {
1271         struct smb_hdr hdr; /* wct = 8 */
1272         __le16 attr;
1273         __le16 time_low;
1274         __le16 time_high;
1275         __le16 reserved[5]; /* must be zero */
1276         __u16  ByteCount;
1277         __u8   BufferFormat; /* 4 = ASCII */
1278         unsigned char fileName[1];
1279 } __attribute__((packed)) SETATTR_REQ;
1280
1281 typedef struct smb_com_setattr_rsp {
1282         struct smb_hdr hdr;     /* wct = 0 */
1283         __u16 ByteCount;        /* bct = 0 */
1284 } __attribute__((packed)) SETATTR_RSP;
1285
1286 /* empty wct response to setattr */
1287
1288 /*******************************************************/
1289 /* NT Transact structure definitions follow            */
1290 /* Currently only ioctl, acl (get security descriptor) */
1291 /* and notify are implemented                          */
1292 /*******************************************************/
1293 typedef struct smb_com_ntransact_req {
1294         struct smb_hdr hdr; /* wct >= 19 */
1295         __u8 MaxSetupCount;
1296         __u16 Reserved;
1297         __le32 TotalParameterCount;
1298         __le32 TotalDataCount;
1299         __le32 MaxParameterCount;
1300         __le32 MaxDataCount;
1301         __le32 ParameterCount;
1302         __le32 ParameterOffset;
1303         __le32 DataCount;
1304         __le32 DataOffset;
1305         __u8 SetupCount; /* four setup words follow subcommand */
1306         /* SNIA spec incorrectly included spurious pad here */
1307         __le16 SubCommand; /* 2 = IOCTL/FSCTL */
1308         /* SetupCount words follow then */
1309         __le16 ByteCount;
1310         __u8 Pad[3];
1311         __u8 Parms[];
1312 } __attribute__((packed)) NTRANSACT_REQ;
1313
1314 typedef struct smb_com_ntransact_rsp {
1315         struct smb_hdr hdr;     /* wct = 18 */
1316         __u8 Reserved[3];
1317         __le32 TotalParameterCount;
1318         __le32 TotalDataCount;
1319         __le32 ParameterCount;
1320         __le32 ParameterOffset;
1321         __le32 ParameterDisplacement;
1322         __le32 DataCount;
1323         __le32 DataOffset;
1324         __le32 DataDisplacement;
1325         __u8 SetupCount;   /* 0 */
1326         __u16 ByteCount;
1327         /* __u8 Pad[3]; */
1328         /* parms and data follow */
1329 } __attribute__((packed)) NTRANSACT_RSP;
1330
1331 /* See MS-SMB 2.2.7.2.1.1 */
1332 struct srv_copychunk {
1333         __le64 SourceOffset;
1334         __le64 DestinationOffset;
1335         __le32 CopyLength;
1336         __u32  Reserved;
1337 } __packed;
1338
1339 typedef struct smb_com_transaction_ioctl_req {
1340         struct smb_hdr hdr;     /* wct = 23 */
1341         __u8 MaxSetupCount;
1342         __u16 Reserved;
1343         __le32 TotalParameterCount;
1344         __le32 TotalDataCount;
1345         __le32 MaxParameterCount;
1346         __le32 MaxDataCount;
1347         __le32 ParameterCount;
1348         __le32 ParameterOffset;
1349         __le32 DataCount;
1350         __le32 DataOffset;
1351         __u8 SetupCount; /* four setup words follow subcommand */
1352         /* SNIA spec incorrectly included spurious pad here */
1353         __le16 SubCommand; /* 2 = IOCTL/FSCTL */
1354         __le32 FunctionCode;
1355         __u16 Fid;
1356         __u8 IsFsctl;  /* 1 = File System Control 0 = device control (IOCTL) */
1357         __u8 IsRootFlag; /* 1 = apply command to root of share (must be DFS) */
1358         __le16 ByteCount;
1359         __u8 Pad[3];
1360         __u8 Data[1];
1361 } __attribute__((packed)) TRANSACT_IOCTL_REQ;
1362
1363 typedef struct smb_com_transaction_compr_ioctl_req {
1364         struct smb_hdr hdr;     /* wct = 23 */
1365         __u8 MaxSetupCount;
1366         __u16 Reserved;
1367         __le32 TotalParameterCount;
1368         __le32 TotalDataCount;
1369         __le32 MaxParameterCount;
1370         __le32 MaxDataCount;
1371         __le32 ParameterCount;
1372         __le32 ParameterOffset;
1373         __le32 DataCount;
1374         __le32 DataOffset;
1375         __u8 SetupCount; /* four setup words follow subcommand */
1376         /* SNIA spec incorrectly included spurious pad here */
1377         __le16 SubCommand; /* 2 = IOCTL/FSCTL */
1378         __le32 FunctionCode;
1379         __u16 Fid;
1380         __u8 IsFsctl;  /* 1 = File System Control 0 = device control (IOCTL) */
1381         __u8 IsRootFlag; /* 1 = apply command to root of share (must be DFS) */
1382         __le16 ByteCount;
1383         __u8 Pad[3];
1384         __le16 compression_state;  /* See below for valid flags */
1385 } __attribute__((packed)) TRANSACT_COMPR_IOCTL_REQ;
1386
1387 /* compression state flags */
1388 #define COMPRESSION_FORMAT_NONE         0x0000
1389 #define COMPRESSION_FORMAT_DEFAULT      0x0001
1390 #define COMPRESSION_FORMAT_LZNT1        0x0002
1391
1392 typedef struct smb_com_transaction_ioctl_rsp {
1393         struct smb_hdr hdr;     /* wct = 19 */
1394         __u8 Reserved[3];
1395         __le32 TotalParameterCount;
1396         __le32 TotalDataCount;
1397         __le32 ParameterCount;
1398         __le32 ParameterOffset;
1399         __le32 ParameterDisplacement;
1400         __le32 DataCount;
1401         __le32 DataOffset;
1402         __le32 DataDisplacement;
1403         __u8 SetupCount;        /* 1 */
1404         __le16 ReturnedDataLen;
1405         __u16 ByteCount;
1406 } __attribute__((packed)) TRANSACT_IOCTL_RSP;
1407
1408 #define CIFS_ACL_OWNER 1
1409 #define CIFS_ACL_GROUP 2
1410 #define CIFS_ACL_DACL  4
1411 #define CIFS_ACL_SACL  8
1412
1413 typedef struct smb_com_transaction_qsec_req {
1414         struct smb_hdr hdr;     /* wct = 19 */
1415         __u8 MaxSetupCount;
1416         __u16 Reserved;
1417         __le32 TotalParameterCount;
1418         __le32 TotalDataCount;
1419         __le32 MaxParameterCount;
1420         __le32 MaxDataCount;
1421         __le32 ParameterCount;
1422         __le32 ParameterOffset;
1423         __le32 DataCount;
1424         __le32 DataOffset;
1425         __u8 SetupCount; /* no setup words follow subcommand */
1426         /* SNIA spec incorrectly included spurious pad here */
1427         __le16 SubCommand; /* 6 = QUERY_SECURITY_DESC */
1428         __le16 ByteCount; /* bcc = 3 + 8 */
1429         __u8 Pad[3];
1430         __u16 Fid;
1431         __u16 Reserved2;
1432         __le32 AclFlags;
1433 } __attribute__((packed)) QUERY_SEC_DESC_REQ;
1434
1435
1436 typedef struct smb_com_transaction_ssec_req {
1437         struct smb_hdr hdr;     /* wct = 19 */
1438         __u8 MaxSetupCount;
1439         __u16 Reserved;
1440         __le32 TotalParameterCount;
1441         __le32 TotalDataCount;
1442         __le32 MaxParameterCount;
1443         __le32 MaxDataCount;
1444         __le32 ParameterCount;
1445         __le32 ParameterOffset;
1446         __le32 DataCount;
1447         __le32 DataOffset;
1448         __u8 SetupCount; /* no setup words follow subcommand */
1449         /* SNIA spec incorrectly included spurious pad here */
1450         __le16 SubCommand; /* 3 = SET_SECURITY_DESC */
1451         __le16 ByteCount; /* bcc = 3 + 8 */
1452         __u8 Pad[3];
1453         __u16 Fid;
1454         __u16 Reserved2;
1455         __le32 AclFlags;
1456 } __attribute__((packed)) SET_SEC_DESC_REQ;
1457
1458 typedef struct smb_com_transaction_change_notify_req {
1459         struct smb_hdr hdr;     /* wct = 23 */
1460         __u8 MaxSetupCount;
1461         __u16 Reserved;
1462         __le32 TotalParameterCount;
1463         __le32 TotalDataCount;
1464         __le32 MaxParameterCount;
1465         __le32 MaxDataCount;
1466         __le32 ParameterCount;
1467         __le32 ParameterOffset;
1468         __le32 DataCount;
1469         __le32 DataOffset;
1470         __u8 SetupCount; /* four setup words follow subcommand */
1471         /* SNIA spec incorrectly included spurious pad here */
1472         __le16 SubCommand;/* 4 = Change Notify */
1473         __le32 CompletionFilter;  /* operation to monitor */
1474         __u16 Fid;
1475         __u8 WatchTree;  /* 1 = Monitor subdirectories */
1476         __u8 Reserved2;
1477         __le16 ByteCount;
1478 /*      __u8 Pad[3];*/
1479 /*      __u8 Data[1];*/
1480 } __attribute__((packed)) TRANSACT_CHANGE_NOTIFY_REQ;
1481
1482 /* BB eventually change to use generic ntransact rsp struct
1483       and validation routine */
1484 typedef struct smb_com_transaction_change_notify_rsp {
1485         struct smb_hdr hdr;     /* wct = 18 */
1486         __u8 Reserved[3];
1487         __le32 TotalParameterCount;
1488         __le32 TotalDataCount;
1489         __le32 ParameterCount;
1490         __le32 ParameterOffset;
1491         __le32 ParameterDisplacement;
1492         __le32 DataCount;
1493         __le32 DataOffset;
1494         __le32 DataDisplacement;
1495         __u8 SetupCount;   /* 0 */
1496         __u16 ByteCount;
1497         /* __u8 Pad[3]; */
1498 } __attribute__((packed)) TRANSACT_CHANGE_NOTIFY_RSP;
1499 /* Completion Filter flags for Notify */
1500 #define FILE_NOTIFY_CHANGE_FILE_NAME    0x00000001
1501 #define FILE_NOTIFY_CHANGE_DIR_NAME     0x00000002
1502 #define FILE_NOTIFY_CHANGE_NAME         0x00000003
1503 #define FILE_NOTIFY_CHANGE_ATTRIBUTES   0x00000004
1504 #define FILE_NOTIFY_CHANGE_SIZE         0x00000008
1505 #define FILE_NOTIFY_CHANGE_LAST_WRITE   0x00000010
1506 #define FILE_NOTIFY_CHANGE_LAST_ACCESS  0x00000020
1507 #define FILE_NOTIFY_CHANGE_CREATION     0x00000040
1508 #define FILE_NOTIFY_CHANGE_EA           0x00000080
1509 #define FILE_NOTIFY_CHANGE_SECURITY     0x00000100
1510 #define FILE_NOTIFY_CHANGE_STREAM_NAME  0x00000200
1511 #define FILE_NOTIFY_CHANGE_STREAM_SIZE  0x00000400
1512 #define FILE_NOTIFY_CHANGE_STREAM_WRITE 0x00000800
1513
1514 #define FILE_ACTION_ADDED               0x00000001
1515 #define FILE_ACTION_REMOVED             0x00000002
1516 #define FILE_ACTION_MODIFIED            0x00000003
1517 #define FILE_ACTION_RENAMED_OLD_NAME    0x00000004
1518 #define FILE_ACTION_RENAMED_NEW_NAME    0x00000005
1519 #define FILE_ACTION_ADDED_STREAM        0x00000006
1520 #define FILE_ACTION_REMOVED_STREAM      0x00000007
1521 #define FILE_ACTION_MODIFIED_STREAM     0x00000008
1522
1523 /* response contains array of the following structures */
1524 struct file_notify_information {
1525         __le32 NextEntryOffset;
1526         __le32 Action;
1527         __le32 FileNameLength;
1528         __u8  FileName[];
1529 } __attribute__((packed));
1530
1531 /* For IO_REPARSE_TAG_SYMLINK */
1532 struct reparse_symlink_data {
1533         __le32  ReparseTag;
1534         __le16  ReparseDataLength;
1535         __u16   Reserved;
1536         __le16  SubstituteNameOffset;
1537         __le16  SubstituteNameLength;
1538         __le16  PrintNameOffset;
1539         __le16  PrintNameLength;
1540         __le32  Flags;
1541         char    PathBuffer[];
1542 } __attribute__((packed));
1543
1544 /* Flag above */
1545 #define SYMLINK_FLAG_RELATIVE 0x00000001
1546
1547 /* For IO_REPARSE_TAG_NFS */
1548 #define NFS_SPECFILE_LNK        0x00000000014B4E4C
1549 #define NFS_SPECFILE_CHR        0x0000000000524843
1550 #define NFS_SPECFILE_BLK        0x00000000004B4C42
1551 #define NFS_SPECFILE_FIFO       0x000000004F464946
1552 #define NFS_SPECFILE_SOCK       0x000000004B434F53
1553 struct reparse_posix_data {
1554         __le32  ReparseTag;
1555         __le16  ReparseDataLength;
1556         __u16   Reserved;
1557         __le64  InodeType; /* LNK, FIFO, CHR etc. */
1558         char    PathBuffer[];
1559 } __attribute__((packed));
1560
1561 struct cifs_quota_data {
1562         __u32   rsrvd1;  /* 0 */
1563         __u32   sid_size;
1564         __u64   rsrvd2;  /* 0 */
1565         __u64   space_used;
1566         __u64   soft_limit;
1567         __u64   hard_limit;
1568         char    sid[1];  /* variable size? */
1569 } __attribute__((packed));
1570
1571 /* quota sub commands */
1572 #define QUOTA_LIST_CONTINUE         0
1573 #define QUOTA_LIST_START        0x100
1574 #define QUOTA_FOR_SID           0x101
1575
1576 struct trans2_req {
1577         /* struct smb_hdr hdr precedes. Set wct = 14+ */
1578         __le16 TotalParameterCount;
1579         __le16 TotalDataCount;
1580         __le16 MaxParameterCount;
1581         __le16 MaxDataCount;
1582         __u8 MaxSetupCount;
1583         __u8 Reserved;
1584         __le16 Flags;
1585         __le32 Timeout;
1586         __u16 Reserved2;
1587         __le16 ParameterCount;
1588         __le16 ParameterOffset;
1589         __le16 DataCount;
1590         __le16 DataOffset;
1591         __u8 SetupCount;
1592         __u8 Reserved3;
1593         __le16 SubCommand; /* 1st setup word - SetupCount words follow */
1594         __le16 ByteCount;
1595 } __attribute__((packed));
1596
1597 struct smb_t2_req {
1598         struct smb_hdr hdr;
1599         struct trans2_req t2_req;
1600 } __attribute__((packed));
1601
1602 struct trans2_resp {
1603         /* struct smb_hdr hdr precedes. Note wct = 10 + setup count */
1604         __le16 TotalParameterCount;
1605         __le16 TotalDataCount;
1606         __u16 Reserved;
1607         __le16 ParameterCount;
1608         __le16 ParameterOffset;
1609         __le16 ParameterDisplacement;
1610         __le16 DataCount;
1611         __le16 DataOffset;
1612         __le16 DataDisplacement;
1613         __u8 SetupCount;
1614         __u8 Reserved1;
1615         /* SetupWords[SetupCount];
1616         __u16 ByteCount;
1617         __u16 Reserved2;*/
1618         /* data area follows */
1619 } __attribute__((packed));
1620
1621 struct smb_t2_rsp {
1622         struct smb_hdr hdr;
1623         struct trans2_resp t2_rsp;
1624 } __attribute__((packed));
1625
1626 /* PathInfo/FileInfo infolevels */
1627 #define SMB_INFO_STANDARD                   1
1628 #define SMB_SET_FILE_EA                     2
1629 #define SMB_QUERY_FILE_EA_SIZE              2
1630 #define SMB_INFO_QUERY_EAS_FROM_LIST        3
1631 #define SMB_INFO_QUERY_ALL_EAS              4
1632 #define SMB_INFO_IS_NAME_VALID              6
1633 #define SMB_QUERY_FILE_BASIC_INFO       0x101
1634 #define SMB_QUERY_FILE_STANDARD_INFO    0x102
1635 #define SMB_QUERY_FILE_EA_INFO          0x103
1636 #define SMB_QUERY_FILE_NAME_INFO        0x104
1637 #define SMB_QUERY_FILE_ALLOCATION_INFO  0x105
1638 #define SMB_QUERY_FILE_END_OF_FILEINFO  0x106
1639 #define SMB_QUERY_FILE_ALL_INFO         0x107
1640 #define SMB_QUERY_ALT_NAME_INFO         0x108
1641 #define SMB_QUERY_FILE_STREAM_INFO      0x109
1642 #define SMB_QUERY_FILE_COMPRESSION_INFO 0x10B
1643 #define SMB_QUERY_FILE_UNIX_BASIC       0x200
1644 #define SMB_QUERY_FILE_UNIX_LINK        0x201
1645 #define SMB_QUERY_POSIX_ACL             0x204
1646 #define SMB_QUERY_XATTR                 0x205  /* e.g. system EA name space */
1647 #define SMB_QUERY_ATTR_FLAGS            0x206  /* append,immutable etc. */
1648 #define SMB_QUERY_POSIX_PERMISSION      0x207
1649 #define SMB_QUERY_POSIX_LOCK            0x208
1650 /* #define SMB_POSIX_OPEN               0x209 */
1651 /* #define SMB_POSIX_UNLINK             0x20a */
1652 #define SMB_QUERY_FILE__UNIX_INFO2      0x20b
1653 #define SMB_QUERY_FILE_INTERNAL_INFO    0x3ee
1654 #define SMB_QUERY_FILE_ACCESS_INFO      0x3f0
1655 #define SMB_QUERY_FILE_NAME_INFO2       0x3f1 /* 0x30 bytes */
1656 #define SMB_QUERY_FILE_POSITION_INFO    0x3f6
1657 #define SMB_QUERY_FILE_MODE_INFO        0x3f8
1658 #define SMB_QUERY_FILE_ALGN_INFO        0x3f9
1659
1660
1661 #define SMB_SET_FILE_BASIC_INFO         0x101
1662 #define SMB_SET_FILE_DISPOSITION_INFO   0x102
1663 #define SMB_SET_FILE_ALLOCATION_INFO    0x103
1664 #define SMB_SET_FILE_END_OF_FILE_INFO   0x104
1665 #define SMB_SET_FILE_UNIX_BASIC         0x200
1666 #define SMB_SET_FILE_UNIX_LINK          0x201
1667 #define SMB_SET_FILE_UNIX_HLINK         0x203
1668 #define SMB_SET_POSIX_ACL               0x204
1669 #define SMB_SET_XATTR                   0x205
1670 #define SMB_SET_ATTR_FLAGS              0x206  /* append, immutable etc. */
1671 #define SMB_SET_POSIX_LOCK              0x208
1672 #define SMB_POSIX_OPEN                  0x209
1673 #define SMB_POSIX_UNLINK                0x20a
1674 #define SMB_SET_FILE_UNIX_INFO2         0x20b
1675 #define SMB_SET_FILE_BASIC_INFO2        0x3ec
1676 #define SMB_SET_FILE_RENAME_INFORMATION 0x3f2 /* BB check if qpathinfo too */
1677 #define SMB_FILE_ALL_INFO2              0x3fa
1678 #define SMB_SET_FILE_ALLOCATION_INFO2   0x3fb
1679 #define SMB_SET_FILE_END_OF_FILE_INFO2  0x3fc
1680 #define SMB_FILE_MOVE_CLUSTER_INFO      0x407
1681 #define SMB_FILE_QUOTA_INFO             0x408
1682 #define SMB_FILE_REPARSEPOINT_INFO      0x409
1683 #define SMB_FILE_MAXIMUM_INFO           0x40d
1684
1685 /* Find File infolevels */
1686 #define SMB_FIND_FILE_INFO_STANDARD       0x001
1687 #define SMB_FIND_FILE_QUERY_EA_SIZE       0x002
1688 #define SMB_FIND_FILE_QUERY_EAS_FROM_LIST 0x003
1689 #define SMB_FIND_FILE_DIRECTORY_INFO      0x101
1690 #define SMB_FIND_FILE_FULL_DIRECTORY_INFO 0x102
1691 #define SMB_FIND_FILE_NAMES_INFO          0x103
1692 #define SMB_FIND_FILE_BOTH_DIRECTORY_INFO 0x104
1693 #define SMB_FIND_FILE_ID_FULL_DIR_INFO    0x105
1694 #define SMB_FIND_FILE_ID_BOTH_DIR_INFO    0x106
1695 #define SMB_FIND_FILE_UNIX                0x202
1696 #define SMB_FIND_FILE_POSIX_INFO          0x064
1697
1698 typedef struct smb_com_transaction2_qpi_req {
1699         struct smb_hdr hdr;     /* wct = 14+ */
1700         __le16 TotalParameterCount;
1701         __le16 TotalDataCount;
1702         __le16 MaxParameterCount;
1703         __le16 MaxDataCount;
1704         __u8 MaxSetupCount;
1705         __u8 Reserved;
1706         __le16 Flags;
1707         __le32 Timeout;
1708         __u16 Reserved2;
1709         __le16 ParameterCount;
1710         __le16 ParameterOffset;
1711         __le16 DataCount;
1712         __le16 DataOffset;
1713         __u8 SetupCount;
1714         __u8 Reserved3;
1715         __le16 SubCommand;      /* one setup word */
1716         __le16 ByteCount;
1717         __u8 Pad;
1718         __le16 InformationLevel;
1719         __u32 Reserved4;
1720         char FileName[1];
1721 } __attribute__((packed)) TRANSACTION2_QPI_REQ;
1722
1723 typedef struct smb_com_transaction2_qpi_rsp {
1724         struct smb_hdr hdr;     /* wct = 10 + SetupCount */
1725         struct trans2_resp t2;
1726         __u16 ByteCount;
1727         __u16 Reserved2; /* parameter word is present for infolevels > 100 */
1728 } __attribute__((packed)) TRANSACTION2_QPI_RSP;
1729
1730 typedef struct smb_com_transaction2_spi_req {
1731         struct smb_hdr hdr;     /* wct = 15 */
1732         __le16 TotalParameterCount;
1733         __le16 TotalDataCount;
1734         __le16 MaxParameterCount;
1735         __le16 MaxDataCount;
1736         __u8 MaxSetupCount;
1737         __u8 Reserved;
1738         __le16 Flags;
1739         __le32 Timeout;
1740         __u16 Reserved2;
1741         __le16 ParameterCount;
1742         __le16 ParameterOffset;
1743         __le16 DataCount;
1744         __le16 DataOffset;
1745         __u8 SetupCount;
1746         __u8 Reserved3;
1747         __le16 SubCommand;      /* one setup word */
1748         __le16 ByteCount;
1749         __u8 Pad;
1750         __u16 Pad1;
1751         __le16 InformationLevel;
1752         __u32 Reserved4;
1753         char FileName[1];
1754 } __attribute__((packed)) TRANSACTION2_SPI_REQ;
1755
1756 typedef struct smb_com_transaction2_spi_rsp {
1757         struct smb_hdr hdr;     /* wct = 10 + SetupCount */
1758         struct trans2_resp t2;
1759         __u16 ByteCount;
1760         __u16 Reserved2; /* parameter word is present for infolevels > 100 */
1761 } __attribute__((packed)) TRANSACTION2_SPI_RSP;
1762
1763 struct set_file_rename {
1764         __le32 overwrite;   /* 1 = overwrite dest */
1765         __u32 root_fid;   /* zero */
1766         __le32 target_name_len;
1767         char  target_name[];  /* Must be unicode */
1768 } __attribute__((packed));
1769
1770 struct smb_com_transaction2_sfi_req {
1771         struct smb_hdr hdr;     /* wct = 15 */
1772         __le16 TotalParameterCount;
1773         __le16 TotalDataCount;
1774         __le16 MaxParameterCount;
1775         __le16 MaxDataCount;
1776         __u8 MaxSetupCount;
1777         __u8 Reserved;
1778         __le16 Flags;
1779         __le32 Timeout;
1780         __u16 Reserved2;
1781         __le16 ParameterCount;
1782         __le16 ParameterOffset;
1783         __le16 DataCount;
1784         __le16 DataOffset;
1785         __u8 SetupCount;
1786         __u8 Reserved3;
1787         __le16 SubCommand;      /* one setup word */
1788         __le16 ByteCount;
1789         __u8 Pad;
1790         __u16 Pad1;
1791         __u16 Fid;
1792         __le16 InformationLevel;
1793         __u16 Reserved4;
1794 } __attribute__((packed));
1795
1796 struct smb_com_transaction2_sfi_rsp {
1797         struct smb_hdr hdr;     /* wct = 10 + SetupCount */
1798         struct trans2_resp t2;
1799         __u16 ByteCount;
1800         __u16 Reserved2;        /* parameter word reserved -
1801                                         present for infolevels > 100 */
1802 } __attribute__((packed));
1803
1804 struct smb_t2_qfi_req {
1805         struct  smb_hdr hdr;
1806         struct  trans2_req t2;
1807         __u8    Pad;
1808         __u16   Fid;
1809         __le16  InformationLevel;
1810 } __attribute__((packed));
1811
1812 struct smb_t2_qfi_rsp {
1813         struct smb_hdr hdr;     /* wct = 10 + SetupCount */
1814         struct trans2_resp t2;
1815         __u16 ByteCount;
1816         __u16 Reserved2;        /* parameter word reserved -
1817                                    present for infolevels > 100 */
1818 } __attribute__((packed));
1819
1820 /*
1821  * Flags on T2 FINDFIRST and FINDNEXT
1822  */
1823 #define CIFS_SEARCH_CLOSE_ALWAYS  0x0001
1824 #define CIFS_SEARCH_CLOSE_AT_END  0x0002
1825 #define CIFS_SEARCH_RETURN_RESUME 0x0004
1826 #define CIFS_SEARCH_CONTINUE_FROM_LAST 0x0008
1827 #define CIFS_SEARCH_BACKUP_SEARCH 0x0010
1828
1829 /*
1830  * Size of the resume key on FINDFIRST and FINDNEXT calls
1831  */
1832 #define CIFS_SMB_RESUME_KEY_SIZE 4
1833
1834 typedef struct smb_com_transaction2_ffirst_req {
1835         struct smb_hdr hdr;     /* wct = 15 */
1836         __le16 TotalParameterCount;
1837         __le16 TotalDataCount;
1838         __le16 MaxParameterCount;
1839         __le16 MaxDataCount;
1840         __u8 MaxSetupCount;
1841         __u8 Reserved;
1842         __le16 Flags;
1843         __le32 Timeout;
1844         __u16 Reserved2;
1845         __le16 ParameterCount;
1846         __le16 ParameterOffset;
1847         __le16 DataCount;
1848         __le16 DataOffset;
1849         __u8 SetupCount;        /* one */
1850         __u8 Reserved3;
1851         __le16 SubCommand;      /* TRANS2_FIND_FIRST */
1852         __le16 ByteCount;
1853         __u8 Pad;
1854         __le16 SearchAttributes;
1855         __le16 SearchCount;
1856         __le16 SearchFlags;
1857         __le16 InformationLevel;
1858         __le32 SearchStorageType;
1859         char FileName[1];
1860 } __attribute__((packed)) TRANSACTION2_FFIRST_REQ;
1861
1862 typedef struct smb_com_transaction2_ffirst_rsp {
1863         struct smb_hdr hdr;     /* wct = 10 */
1864         struct trans2_resp t2;
1865         __u16 ByteCount;
1866 } __attribute__((packed)) TRANSACTION2_FFIRST_RSP;
1867
1868 typedef struct smb_com_transaction2_ffirst_rsp_parms {
1869         __u16 SearchHandle;
1870         __le16 SearchCount;
1871         __le16 EndofSearch;
1872         __le16 EAErrorOffset;
1873         __le16 LastNameOffset;
1874 } __attribute__((packed)) T2_FFIRST_RSP_PARMS;
1875
1876 typedef struct smb_com_transaction2_fnext_req {
1877         struct smb_hdr hdr;     /* wct = 15 */
1878         __le16 TotalParameterCount;
1879         __le16 TotalDataCount;
1880         __le16 MaxParameterCount;
1881         __le16 MaxDataCount;
1882         __u8 MaxSetupCount;
1883         __u8 Reserved;
1884         __le16 Flags;
1885         __le32 Timeout;
1886         __u16 Reserved2;
1887         __le16 ParameterCount;
1888         __le16 ParameterOffset;
1889         __le16 DataCount;
1890         __le16 DataOffset;
1891         __u8 SetupCount;        /* one */
1892         __u8 Reserved3;
1893         __le16 SubCommand;      /* TRANS2_FIND_NEXT */
1894         __le16 ByteCount;
1895         __u8 Pad;
1896         __u16 SearchHandle;
1897         __le16 SearchCount;
1898         __le16 InformationLevel;
1899         __u32 ResumeKey;
1900         __le16 SearchFlags;
1901         char ResumeFileName[1];
1902 } __attribute__((packed)) TRANSACTION2_FNEXT_REQ;
1903
1904 typedef struct smb_com_transaction2_fnext_rsp {
1905         struct smb_hdr hdr;     /* wct = 10 */
1906         struct trans2_resp t2;
1907         __u16 ByteCount;
1908 } __attribute__((packed)) TRANSACTION2_FNEXT_RSP;
1909
1910 typedef struct smb_com_transaction2_fnext_rsp_parms {
1911         __le16 SearchCount;
1912         __le16 EndofSearch;
1913         __le16 EAErrorOffset;
1914         __le16 LastNameOffset;
1915 } __attribute__((packed)) T2_FNEXT_RSP_PARMS;
1916
1917 /* QFSInfo Levels */
1918 #define SMB_INFO_ALLOCATION         1
1919 #define SMB_INFO_VOLUME             2
1920 #define SMB_QUERY_FS_VOLUME_INFO    0x102
1921 #define SMB_QUERY_FS_SIZE_INFO      0x103
1922 #define SMB_QUERY_FS_DEVICE_INFO    0x104
1923 #define SMB_QUERY_FS_ATTRIBUTE_INFO 0x105
1924 #define SMB_QUERY_CIFS_UNIX_INFO    0x200
1925 #define SMB_QUERY_POSIX_FS_INFO     0x201
1926 #define SMB_QUERY_POSIX_WHO_AM_I    0x202
1927 #define SMB_REQUEST_TRANSPORT_ENCRYPTION 0x203
1928 #define SMB_QUERY_FS_PROXY          0x204 /* WAFS enabled. Returns structure
1929                                             FILE_SYSTEM__UNIX_INFO to tell
1930                                             whether new NTIOCTL available
1931                                             (0xACE) for WAN friendly SMB
1932                                             operations to be carried */
1933 #define SMB_QUERY_LABEL_INFO        0x3ea
1934 #define SMB_QUERY_FS_QUOTA_INFO     0x3ee
1935 #define SMB_QUERY_FS_FULL_SIZE_INFO 0x3ef
1936 #define SMB_QUERY_OBJECTID_INFO     0x3f0
1937
1938 typedef struct smb_com_transaction2_qfsi_req {
1939         struct smb_hdr hdr;     /* wct = 14+ */
1940         __le16 TotalParameterCount;
1941         __le16 TotalDataCount;
1942         __le16 MaxParameterCount;
1943         __le16 MaxDataCount;
1944         __u8 MaxSetupCount;
1945         __u8 Reserved;
1946         __le16 Flags;
1947         __le32 Timeout;
1948         __u16 Reserved2;
1949         __le16 ParameterCount;
1950         __le16 ParameterOffset;
1951         __le16 DataCount;
1952         __le16 DataOffset;
1953         __u8 SetupCount;
1954         __u8 Reserved3;
1955         __le16 SubCommand;      /* one setup word */
1956         __le16 ByteCount;
1957         __u8 Pad;
1958         __le16 InformationLevel;
1959 } __attribute__((packed)) TRANSACTION2_QFSI_REQ;
1960
1961 typedef struct smb_com_transaction_qfsi_rsp {
1962         struct smb_hdr hdr;     /* wct = 10 + SetupCount */
1963         struct trans2_resp t2;
1964         __u16 ByteCount;
1965         __u8 Pad;       /* may be three bytes? *//* followed by data area */
1966 } __attribute__((packed)) TRANSACTION2_QFSI_RSP;
1967
1968 typedef struct whoami_rsp_data { /* Query level 0x202 */
1969         __u32 flags; /* 0 = Authenticated user 1 = GUEST */
1970         __u32 mask; /* which flags bits server understands ie 0x0001 */
1971         __u64 unix_user_id;
1972         __u64 unix_user_gid;
1973         __u32 number_of_supplementary_gids; /* may be zero */
1974         __u32 number_of_sids; /* may be zero */
1975         __u32 length_of_sid_array; /* in bytes - may be zero */
1976         __u32 pad; /* reserved - MBZ */
1977         /* __u64 gid_array[0]; */  /* may be empty */
1978         /* __u8 * psid_list */  /* may be empty */
1979 } __attribute__((packed)) WHOAMI_RSP_DATA;
1980
1981 /* SETFSInfo Levels */
1982 #define SMB_SET_CIFS_UNIX_INFO    0x200
1983 /* level 0x203 is defined above in list of QFS info levels */
1984 /* #define SMB_REQUEST_TRANSPORT_ENCRYPTION 0x203 */
1985
1986 /* Level 0x200 request structure follows */
1987 typedef struct smb_com_transaction2_setfsi_req {
1988         struct smb_hdr hdr;     /* wct = 15 */
1989         __le16 TotalParameterCount;
1990         __le16 TotalDataCount;
1991         __le16 MaxParameterCount;
1992         __le16 MaxDataCount;
1993         __u8 MaxSetupCount;
1994         __u8 Reserved;
1995         __le16 Flags;
1996         __le32 Timeout;
1997         __u16 Reserved2;
1998         __le16 ParameterCount;  /* 4 */
1999         __le16 ParameterOffset;
2000         __le16 DataCount;       /* 12 */
2001         __le16 DataOffset;
2002         __u8 SetupCount;        /* one */
2003         __u8 Reserved3;
2004         __le16 SubCommand;      /* TRANS2_SET_FS_INFORMATION */
2005         __le16 ByteCount;
2006         __u8 Pad;
2007         __u16 FileNum;          /* Parameters start. */
2008         __le16 InformationLevel;/* Parameters end. */
2009         __le16 ClientUnixMajor; /* Data start. */
2010         __le16 ClientUnixMinor;
2011         __le64 ClientUnixCap;   /* Data end */
2012 } __attribute__((packed)) TRANSACTION2_SETFSI_REQ;
2013
2014 /* level 0x203 request structure follows */
2015 typedef struct smb_com_transaction2_setfs_enc_req {
2016         struct smb_hdr hdr;     /* wct = 15 */
2017         __le16 TotalParameterCount;
2018         __le16 TotalDataCount;
2019         __le16 MaxParameterCount;
2020         __le16 MaxDataCount;
2021         __u8 MaxSetupCount;
2022         __u8 Reserved;
2023         __le16 Flags;
2024         __le32 Timeout;
2025         __u16 Reserved2;
2026         __le16 ParameterCount;  /* 4 */
2027         __le16 ParameterOffset;
2028         __le16 DataCount;       /* 12 */
2029         __le16 DataOffset;
2030         __u8 SetupCount;        /* one */
2031         __u8 Reserved3;
2032         __le16 SubCommand;      /* TRANS2_SET_FS_INFORMATION */
2033         __le16 ByteCount;
2034         __u8 Pad;
2035         __u16  Reserved4;       /* Parameters start. */
2036         __le16 InformationLevel;/* Parameters end. */
2037         /* NTLMSSP Blob, Data start. */
2038 } __attribute__((packed)) TRANSACTION2_SETFSI_ENC_REQ;
2039
2040 /* response for setfsinfo levels 0x200 and 0x203 */
2041 typedef struct smb_com_transaction2_setfsi_rsp {
2042         struct smb_hdr hdr;     /* wct = 10 */
2043         struct trans2_resp t2;
2044         __u16 ByteCount;
2045 } __attribute__((packed)) TRANSACTION2_SETFSI_RSP;
2046
2047 typedef struct smb_com_transaction2_get_dfs_refer_req {
2048         struct smb_hdr hdr;     /* wct = 15 */
2049         __le16 TotalParameterCount;
2050         __le16 TotalDataCount;
2051         __le16 MaxParameterCount;
2052         __le16 MaxDataCount;
2053         __u8 MaxSetupCount;
2054         __u8 Reserved;
2055         __le16 Flags;
2056         __le32 Timeout;
2057         __u16 Reserved2;
2058         __le16 ParameterCount;
2059         __le16 ParameterOffset;
2060         __le16 DataCount;
2061         __le16 DataOffset;
2062         __u8 SetupCount;
2063         __u8 Reserved3;
2064         __le16 SubCommand;      /* one setup word */
2065         __le16 ByteCount;
2066         __u8 Pad[3];            /* Win2K has sent 0x0F01 (max response length
2067                                    perhaps?) followed by one byte pad - doesn't
2068                                    seem to matter though */
2069         __le16 MaxReferralLevel;
2070         char RequestFileName[1];
2071 } __attribute__((packed)) TRANSACTION2_GET_DFS_REFER_REQ;
2072
2073 #define DFS_VERSION cpu_to_le16(0x0003)
2074
2075 /* DFS server target type */
2076 #define DFS_TYPE_LINK 0x0000  /* also for sysvol targets */
2077 #define DFS_TYPE_ROOT 0x0001
2078
2079 /* Referral Entry Flags */
2080 #define DFS_NAME_LIST_REF 0x0200 /* set for domain or DC referral responses */
2081 #define DFS_TARGET_SET_BOUNDARY 0x0400 /* only valid with version 4 dfs req */
2082
2083 typedef struct dfs_referral_level_3 { /* version 4 is same, + one flag bit */
2084         __le16 VersionNumber;  /* must be 3 or 4 */
2085         __le16 Size;
2086         __le16 ServerType; /* 0x0001 = root targets; 0x0000 = link targets */
2087         __le16 ReferralEntryFlags;
2088         __le32 TimeToLive;
2089         __le16 DfsPathOffset;
2090         __le16 DfsAlternatePathOffset;
2091         __le16 NetworkAddressOffset; /* offset of the link target */
2092         __u8   ServiceSiteGuid[16];  /* MBZ, ignored */
2093 } __attribute__((packed)) REFERRAL3;
2094
2095 struct get_dfs_referral_rsp {
2096         __le16 PathConsumed;
2097         __le16 NumberOfReferrals;
2098         __le32 DFSFlags;
2099         REFERRAL3 referrals[1]; /* array of level 3 dfs_referral structures */
2100         /* followed by the strings pointed to by the referral structures */
2101 } __packed;
2102
2103 typedef struct smb_com_transaction_get_dfs_refer_rsp {
2104         struct smb_hdr hdr;     /* wct = 10 */
2105         struct trans2_resp t2;
2106         __u16 ByteCount;
2107         __u8 Pad;
2108         struct get_dfs_referral_rsp dfs_data;
2109 } __packed TRANSACTION2_GET_DFS_REFER_RSP;
2110
2111 /* DFS Flags */
2112 #define DFSREF_REFERRAL_SERVER  0x00000001 /* all targets are DFS roots */
2113 #define DFSREF_STORAGE_SERVER   0x00000002 /* no further ref requests needed */
2114 #define DFSREF_TARGET_FAILBACK  0x00000004 /* only for DFS referral version 4 */
2115
2116 /*
2117  ************************************************************************
2118  * All structs for everything above the SMB PDUs themselves
2119  * (such as the T2 level specific data) go here
2120  ************************************************************************
2121  */
2122
2123 /*
2124  * Information on a server
2125  */
2126
2127 struct serverInfo {
2128         char name[16];
2129         unsigned char versionMajor;
2130         unsigned char versionMinor;
2131         unsigned long type;
2132         unsigned int commentOffset;
2133 } __attribute__((packed));
2134
2135 /*
2136  * The following structure is the format of the data returned on a NetShareEnum
2137  * with level "90" (x5A)
2138  */
2139
2140 struct shareInfo {
2141         char shareName[13];
2142         char pad;
2143         unsigned short type;
2144         unsigned int commentOffset;
2145 } __attribute__((packed));
2146
2147 struct aliasInfo {
2148         char aliasName[9];
2149         char pad;
2150         unsigned int commentOffset;
2151         unsigned char type[2];
2152 } __attribute__((packed));
2153
2154 struct aliasInfo92 {
2155         int aliasNameOffset;
2156         int serverNameOffset;
2157         int shareNameOffset;
2158 } __attribute__((packed));
2159
2160 typedef struct {
2161         __le64 TotalAllocationUnits;
2162         __le64 FreeAllocationUnits;
2163         __le32 SectorsPerAllocationUnit;
2164         __le32 BytesPerSector;
2165 } __attribute__((packed)) FILE_SYSTEM_INFO;     /* size info, level 0x103 */
2166
2167 typedef struct {
2168         __le32 fsid;
2169         __le32 SectorsPerAllocationUnit;
2170         __le32 TotalAllocationUnits;
2171         __le32 FreeAllocationUnits;
2172         __le16  BytesPerSector;
2173 } __attribute__((packed)) FILE_SYSTEM_ALLOC_INFO;
2174
2175 typedef struct {
2176         __le16 MajorVersionNumber;
2177         __le16 MinorVersionNumber;
2178         __le64 Capability;
2179 } __attribute__((packed)) FILE_SYSTEM_UNIX_INFO; /* Unix extension level 0x200*/
2180
2181 /* Version numbers for CIFS UNIX major and minor. */
2182 #define CIFS_UNIX_MAJOR_VERSION 1
2183 #define CIFS_UNIX_MINOR_VERSION 0
2184
2185 /* Linux/Unix extensions capability flags */
2186 #define CIFS_UNIX_FCNTL_CAP             0x00000001 /* support for fcntl locks */
2187 #define CIFS_UNIX_POSIX_ACL_CAP         0x00000002 /* support getfacl/setfacl */
2188 #define CIFS_UNIX_XATTR_CAP             0x00000004 /* support new namespace   */
2189 #define CIFS_UNIX_EXTATTR_CAP           0x00000008 /* support chattr/chflag   */
2190 #define CIFS_UNIX_POSIX_PATHNAMES_CAP   0x00000010 /* Allow POSIX path chars  */
2191 #define CIFS_UNIX_POSIX_PATH_OPS_CAP    0x00000020 /* Allow new POSIX path based
2192                                                       calls including posix open
2193                                                       and posix unlink */
2194 #define CIFS_UNIX_LARGE_READ_CAP        0x00000040 /* support reads >128K (up
2195                                                       to 0xFFFF00 */
2196 #define CIFS_UNIX_LARGE_WRITE_CAP       0x00000080
2197 #define CIFS_UNIX_TRANSPORT_ENCRYPTION_CAP 0x00000100 /* can do SPNEGO crypt */
2198 #define CIFS_UNIX_TRANSPORT_ENCRYPTION_MANDATORY_CAP  0x00000200 /* must do  */
2199 #define CIFS_UNIX_PROXY_CAP             0x00000400 /* Proxy cap: 0xACE ioctl and
2200                                                       QFS PROXY call */
2201 #ifdef CONFIG_CIFS_POSIX
2202 /* presumably don't need the 0x20 POSIX_PATH_OPS_CAP since we never send
2203    LockingX instead of posix locking call on unix sess (and we do not expect
2204    LockingX to use different (ie Windows) semantics than posix locking on
2205    the same session (if WINE needs to do this later, we can add this cap
2206    back in later */
2207 /* #define CIFS_UNIX_CAP_MASK              0x000000fb */
2208 #define CIFS_UNIX_CAP_MASK              0x000003db
2209 #else
2210 #define CIFS_UNIX_CAP_MASK              0x00000013
2211 #endif /* CONFIG_CIFS_POSIX */
2212
2213
2214 #define CIFS_POSIX_EXTENSIONS           0x00000010 /* support for new QFSInfo */
2215
2216 typedef struct {
2217         /* For undefined recommended transfer size return -1 in that field */
2218         __le32 OptimalTransferSize;  /* bsize on some os, iosize on other os */
2219         __le32 BlockSize;
2220     /* The next three fields are in terms of the block size.
2221         (above). If block size is unknown, 4096 would be a
2222         reasonable block size for a server to report.
2223         Note that returning the blocks/blocksavail removes need
2224         to make a second call (to QFSInfo level 0x103 to get this info.
2225         UserBlockAvail is typically less than or equal to BlocksAvail,
2226         if no distinction is made return the same value in each */
2227         __le64 TotalBlocks;
2228         __le64 BlocksAvail;       /* bfree */
2229         __le64 UserBlocksAvail;   /* bavail */
2230     /* For undefined Node fields or FSID return -1 */
2231         __le64 TotalFileNodes;
2232         __le64 FreeFileNodes;
2233         __le64 FileSysIdentifier;   /* fsid */
2234         /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
2235         /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call   */
2236 } __attribute__((packed)) FILE_SYSTEM_POSIX_INFO;
2237
2238 /* DeviceType Flags */
2239 #define FILE_DEVICE_CD_ROM              0x00000002
2240 #define FILE_DEVICE_CD_ROM_FILE_SYSTEM  0x00000003
2241 #define FILE_DEVICE_DFS                 0x00000006
2242 #define FILE_DEVICE_DISK                0x00000007
2243 #define FILE_DEVICE_DISK_FILE_SYSTEM    0x00000008
2244 #define FILE_DEVICE_FILE_SYSTEM         0x00000009
2245 #define FILE_DEVICE_NAMED_PIPE          0x00000011
2246 #define FILE_DEVICE_NETWORK             0x00000012
2247 #define FILE_DEVICE_NETWORK_FILE_SYSTEM 0x00000014
2248 #define FILE_DEVICE_NULL                0x00000015
2249 #define FILE_DEVICE_PARALLEL_PORT       0x00000016
2250 #define FILE_DEVICE_PRINTER             0x00000018
2251 #define FILE_DEVICE_SERIAL_PORT         0x0000001b
2252 #define FILE_DEVICE_STREAMS             0x0000001e
2253 #define FILE_DEVICE_TAPE                0x0000001f
2254 #define FILE_DEVICE_TAPE_FILE_SYSTEM    0x00000020
2255 #define FILE_DEVICE_VIRTUAL_DISK        0x00000024
2256 #define FILE_DEVICE_NETWORK_REDIRECTOR  0x00000028
2257
2258 /* Device Characteristics */
2259 #define FILE_REMOVABLE_MEDIA                    0x00000001
2260 #define FILE_READ_ONLY_DEVICE                   0x00000002
2261 #define FILE_FLOPPY_DISKETTE                    0x00000004
2262 #define FILE_WRITE_ONCE_MEDIA                   0x00000008
2263 #define FILE_REMOTE_DEVICE                      0x00000010
2264 #define FILE_DEVICE_IS_MOUNTED                  0x00000020
2265 #define FILE_VIRTUAL_VOLUME                     0x00000040
2266 #define FILE_DEVICE_SECURE_OPEN                 0x00000100
2267 #define FILE_CHARACTERISTIC_TS_DEVICE           0x00001000
2268 #define FILE_CHARACTERISTIC_WEBDAV_DEVICE       0x00002000
2269 #define FILE_PORTABLE_DEVICE                    0x00004000
2270 #define FILE_DEVICE_ALLOW_APPCONTAINER_TRAVERSAL 0x00020000
2271
2272 typedef struct {
2273         __le32 DeviceType;
2274         __le32 DeviceCharacteristics;
2275 } __attribute__((packed)) FILE_SYSTEM_DEVICE_INFO; /* device info level 0x104 */
2276
2277 /* minimum includes first three fields, and empty FS Name */
2278 #define MIN_FS_ATTR_INFO_SIZE 12
2279
2280
2281 /* List of FileSystemAttributes - see 2.5.1 of MS-FSCC */
2282 #define FILE_SUPPORTS_SPARSE_VDL        0x10000000 /* faster nonsparse extend */
2283 #define FILE_SUPPORTS_BLOCK_REFCOUNTING 0x08000000 /* allow ioctl dup extents */
2284 #define FILE_SUPPORT_INTEGRITY_STREAMS  0x04000000
2285 #define FILE_SUPPORTS_USN_JOURNAL       0x02000000
2286 #define FILE_SUPPORTS_OPEN_BY_FILE_ID   0x01000000
2287 #define FILE_SUPPORTS_EXTENDED_ATTRIBUTES 0x00800000
2288 #define FILE_SUPPORTS_HARD_LINKS        0x00400000
2289 #define FILE_SUPPORTS_TRANSACTIONS      0x00200000
2290 #define FILE_SEQUENTIAL_WRITE_ONCE      0x00100000
2291 #define FILE_READ_ONLY_VOLUME           0x00080000
2292 #define FILE_NAMED_STREAMS              0x00040000
2293 #define FILE_SUPPORTS_ENCRYPTION        0x00020000
2294 #define FILE_SUPPORTS_OBJECT_IDS        0x00010000
2295 #define FILE_VOLUME_IS_COMPRESSED       0x00008000
2296 #define FILE_SUPPORTS_REMOTE_STORAGE    0x00000100
2297 #define FILE_SUPPORTS_REPARSE_POINTS    0x00000080
2298 #define FILE_SUPPORTS_SPARSE_FILES      0x00000040
2299 #define FILE_VOLUME_QUOTAS              0x00000020
2300 #define FILE_FILE_COMPRESSION           0x00000010
2301 #define FILE_PERSISTENT_ACLS            0x00000008
2302 #define FILE_UNICODE_ON_DISK            0x00000004
2303 #define FILE_CASE_PRESERVED_NAMES       0x00000002
2304 #define FILE_CASE_SENSITIVE_SEARCH      0x00000001
2305 typedef struct {
2306         __le32 Attributes;
2307         __le32 MaxPathNameComponentLength;
2308         __le32 FileSystemNameLen;
2309         char FileSystemName[52]; /* do not have to save this - get subset? */
2310 } __attribute__((packed)) FILE_SYSTEM_ATTRIBUTE_INFO;
2311
2312 /******************************************************************************/
2313 /* QueryFileInfo/QueryPathinfo (also for SetPath/SetFile) data buffer formats */
2314 /******************************************************************************/
2315 typedef struct { /* data block encoding of response to level 263 QPathInfo */
2316         __le64 CreationTime;
2317         __le64 LastAccessTime;
2318         __le64 LastWriteTime;
2319         __le64 ChangeTime;
2320         __le32 Attributes;
2321         __u32 Pad1;
2322         __le64 AllocationSize;
2323         __le64 EndOfFile;       /* size ie offset to first free byte in file */
2324         __le32 NumberOfLinks;   /* hard links */
2325         __u8 DeletePending;
2326         __u8 Directory;
2327         __u16 Pad2;
2328         __le64 IndexNumber;
2329         __le32 EASize;
2330         __le32 AccessFlags;
2331         __u64 IndexNumber1;
2332         __le64 CurrentByteOffset;
2333         __le32 Mode;
2334         __le32 AlignmentRequirement;
2335         __le32 FileNameLength;
2336         char FileName[1];
2337 } __attribute__((packed)) FILE_ALL_INFO;        /* level 0x107 QPathInfo */
2338
2339 typedef struct {
2340         __le64 AllocationSize;
2341         __le64 EndOfFile;       /* size ie offset to first free byte in file */
2342         __le32 NumberOfLinks;   /* hard links */
2343         __u8 DeletePending;
2344         __u8 Directory;
2345         __u16 Pad;
2346 } __attribute__((packed)) FILE_STANDARD_INFO;   /* level 0x102 QPathInfo */
2347
2348
2349 /* defines for enumerating possible values of the Unix type field below */
2350 #define UNIX_FILE      0
2351 #define UNIX_DIR       1
2352 #define UNIX_SYMLINK   2
2353 #define UNIX_CHARDEV   3
2354 #define UNIX_BLOCKDEV  4
2355 #define UNIX_FIFO      5
2356 #define UNIX_SOCKET    6
2357 typedef struct {
2358         __le64 EndOfFile;
2359         __le64 NumOfBytes;
2360         __le64 LastStatusChange; /*SNIA specs DCE time for the 3 time fields */
2361         __le64 LastAccessTime;
2362         __le64 LastModificationTime;
2363         __le64 Uid;
2364         __le64 Gid;
2365         __le32 Type;
2366         __le64 DevMajor;
2367         __le64 DevMinor;
2368         __le64 UniqueId;
2369         __le64 Permissions;
2370         __le64 Nlinks;
2371 } __attribute__((packed)) FILE_UNIX_BASIC_INFO; /* level 0x200 QPathInfo */
2372
2373 typedef struct {
2374         char LinkDest[1];
2375 } __attribute__((packed)) FILE_UNIX_LINK_INFO;  /* level 0x201 QPathInfo */
2376
2377 /* The following three structures are needed only for
2378         setting time to NT4 and some older servers via
2379         the primitive DOS time format */
2380 typedef struct {
2381         __u16 Day:5;
2382         __u16 Month:4;
2383         __u16 Year:7;
2384 } __attribute__((packed)) SMB_DATE;
2385
2386 typedef struct {
2387         __u16 TwoSeconds:5;
2388         __u16 Minutes:6;
2389         __u16 Hours:5;
2390 } __attribute__((packed)) SMB_TIME;
2391
2392 typedef struct {
2393         __le16 CreationDate; /* SMB Date see above */
2394         __le16 CreationTime; /* SMB Time */
2395         __le16 LastAccessDate;
2396         __le16 LastAccessTime;
2397         __le16 LastWriteDate;
2398         __le16 LastWriteTime;
2399         __le32 DataSize; /* File Size (EOF) */
2400         __le32 AllocationSize;
2401         __le16 Attributes; /* verify not u32 */
2402         __le32 EASize;
2403 } __attribute__((packed)) FILE_INFO_STANDARD;  /* level 1 SetPath/FileInfo */
2404
2405 typedef struct {
2406         __le64 CreationTime;
2407         __le64 LastAccessTime;
2408         __le64 LastWriteTime;
2409         __le64 ChangeTime;
2410         __le32 Attributes;
2411         __u32 Pad;
2412 } __attribute__((packed)) FILE_BASIC_INFO;      /* size info, level 0x101 */
2413
2414 struct file_allocation_info {
2415         __le64 AllocationSize; /* Note old Samba srvr rounds this up too much */
2416 } __attribute__((packed));      /* size used on disk, for level 0x103 for set,
2417                                    0x105 for query */
2418
2419 struct file_end_of_file_info {
2420         __le64 FileSize;                /* offset to end of file */
2421 } __attribute__((packed)); /* size info, level 0x104 for set, 0x106 for query */
2422
2423 struct file_alt_name_info {
2424         __u8   alt_name[1];
2425 } __attribute__((packed));      /* level 0x0108 */
2426
2427 struct file_stream_info {
2428         __le32 number_of_streams;  /* BB check sizes and verify location */
2429         /* followed by info on streams themselves
2430                 u64 size;
2431                 u64 allocation_size
2432                 stream info */
2433 };      /* level 0x109 */
2434
2435 struct file_compression_info {
2436         __le64 compressed_size;
2437         __le16 format;
2438         __u8   unit_shift;
2439         __u8   ch_shift;
2440         __u8   cl_shift;
2441         __u8   pad[3];
2442 } __attribute__((packed));      /* level 0x10b */
2443
2444 /* POSIX ACL set/query path info structures */
2445 #define CIFS_ACL_VERSION 1
2446 struct cifs_posix_ace { /* access control entry (ACE) */
2447         __u8  cifs_e_tag;
2448         __u8  cifs_e_perm;
2449         __le64 cifs_uid; /* or gid */
2450 } __attribute__((packed));
2451
2452 struct cifs_posix_acl { /* access conrol list  (ACL) */
2453         __le16  version;
2454         __le16  access_entry_count;  /* access ACL - count of entries */
2455         __le16  default_entry_count; /* default ACL - count of entries */
2456         struct cifs_posix_ace ace_array[];
2457         /* followed by
2458         struct cifs_posix_ace default_ace_arraay[] */
2459 } __attribute__((packed));  /* level 0x204 */
2460
2461 /* types of access control entries already defined in posix_acl.h */
2462 /* #define CIFS_POSIX_ACL_USER_OBJ       0x01
2463 #define CIFS_POSIX_ACL_USER      0x02
2464 #define CIFS_POSIX_ACL_GROUP_OBJ 0x04
2465 #define CIFS_POSIX_ACL_GROUP     0x08
2466 #define CIFS_POSIX_ACL_MASK      0x10
2467 #define CIFS_POSIX_ACL_OTHER     0x20 */
2468
2469 /* types of perms */
2470 /* #define CIFS_POSIX_ACL_EXECUTE   0x01
2471 #define CIFS_POSIX_ACL_WRITE     0x02
2472 #define CIFS_POSIX_ACL_READ          0x04 */
2473
2474 /* end of POSIX ACL definitions */
2475
2476 /* POSIX Open Flags */
2477 #define SMB_O_RDONLY     0x1
2478 #define SMB_O_WRONLY    0x2
2479 #define SMB_O_RDWR      0x4
2480 #define SMB_O_CREAT     0x10
2481 #define SMB_O_EXCL      0x20
2482 #define SMB_O_TRUNC     0x40
2483 #define SMB_O_APPEND    0x80
2484 #define SMB_O_SYNC      0x100
2485 #define SMB_O_DIRECTORY 0x200
2486 #define SMB_O_NOFOLLOW  0x400
2487 #define SMB_O_DIRECT    0x800
2488
2489 typedef struct {
2490         __le32 OpenFlags; /* same as NT CreateX */
2491         __le32 PosixOpenFlags;
2492         __le64 Permissions;
2493         __le16 Level; /* reply level requested (see QPathInfo levels) */
2494 } __attribute__((packed)) OPEN_PSX_REQ; /* level 0x209 SetPathInfo data */
2495
2496 typedef struct {
2497         __le16 OplockFlags;
2498         __u16 Fid;
2499         __le32 CreateAction;
2500         __le16 ReturnedLevel;
2501         __le16 Pad;
2502         /* struct following varies based on requested level */
2503 } __attribute__((packed)) OPEN_PSX_RSP; /* level 0x209 SetPathInfo data */
2504
2505 #define SMB_POSIX_UNLINK_FILE_TARGET            0
2506 #define SMB_POSIX_UNLINK_DIRECTORY_TARGET       1
2507
2508 struct unlink_psx_rq { /* level 0x20a SetPathInfo */
2509         __le16 type;
2510 } __attribute__((packed));
2511
2512 struct file_internal_info {
2513         __le64  UniqueId; /* inode number */
2514 } __attribute__((packed));      /* level 0x3ee */
2515
2516 struct file_mode_info {
2517         __le32  Mode;
2518 } __attribute__((packed));      /* level 0x3f8 */
2519
2520 struct file_attrib_tag {
2521         __le32 Attribute;
2522         __le32 ReparseTag;
2523 } __attribute__((packed));      /* level 0x40b */
2524
2525
2526 /********************************************************/
2527 /*  FindFirst/FindNext transact2 data buffer formats    */
2528 /********************************************************/
2529
2530 typedef struct {
2531         __le32 NextEntryOffset;
2532         __u32 ResumeKey; /* as with FileIndex - no need to convert */
2533         FILE_UNIX_BASIC_INFO basic;
2534         char FileName[1];
2535 } __attribute__((packed)) FILE_UNIX_INFO; /* level 0x202 */
2536
2537 typedef struct {
2538         __le32 NextEntryOffset;
2539         __u32 FileIndex;
2540         __le64 CreationTime;
2541         __le64 LastAccessTime;
2542         __le64 LastWriteTime;
2543         __le64 ChangeTime;
2544         __le64 EndOfFile;
2545         __le64 AllocationSize;
2546         __le32 ExtFileAttributes;
2547         __le32 FileNameLength;
2548         char FileName[1];
2549 } __attribute__((packed)) FILE_DIRECTORY_INFO;   /* level 0x101 FF resp data */
2550
2551 typedef struct {
2552         __le32 NextEntryOffset;
2553         __u32 FileIndex;
2554         __le64 CreationTime;
2555         __le64 LastAccessTime;
2556         __le64 LastWriteTime;
2557         __le64 ChangeTime;
2558         __le64 EndOfFile;
2559         __le64 AllocationSize;
2560         __le32 ExtFileAttributes;
2561         __le32 FileNameLength;
2562         __le32 EaSize; /* length of the xattrs */
2563         char FileName[1];
2564 } __attribute__((packed)) FILE_FULL_DIRECTORY_INFO; /* level 0x102 rsp data */
2565
2566 typedef struct {
2567         __le32 NextEntryOffset;
2568         __u32 FileIndex;
2569         __le64 CreationTime;
2570         __le64 LastAccessTime;
2571         __le64 LastWriteTime;
2572         __le64 ChangeTime;
2573         __le64 EndOfFile;
2574         __le64 AllocationSize;
2575         __le32 ExtFileAttributes;
2576         __le32 FileNameLength;
2577         __le32 EaSize; /* EA size */
2578         __le32 Reserved;
2579         __le64 UniqueId; /* inode num - le since Samba puts ino in low 32 bit*/
2580         char FileName[1];
2581 } __attribute__((packed)) SEARCH_ID_FULL_DIR_INFO; /* level 0x105 FF rsp data */
2582
2583 typedef struct {
2584         __le32 NextEntryOffset;
2585         __u32 FileIndex;
2586         __le64 CreationTime;
2587         __le64 LastAccessTime;
2588         __le64 LastWriteTime;
2589         __le64 ChangeTime;
2590         __le64 EndOfFile;
2591         __le64 AllocationSize;
2592         __le32 ExtFileAttributes;
2593         __le32 FileNameLength;
2594         __le32 EaSize; /* length of the xattrs */
2595         __u8   ShortNameLength;
2596         __u8   Reserved;
2597         __u8   ShortName[12];
2598         char FileName[1];
2599 } __attribute__((packed)) FILE_BOTH_DIRECTORY_INFO; /* level 0x104 FFrsp data */
2600
2601 typedef struct {
2602         __u32  ResumeKey;
2603         __le16 CreationDate; /* SMB Date */
2604         __le16 CreationTime; /* SMB Time */
2605         __le16 LastAccessDate;
2606         __le16 LastAccessTime;
2607         __le16 LastWriteDate;
2608         __le16 LastWriteTime;
2609         __le32 DataSize; /* File Size (EOF) */
2610         __le32 AllocationSize;
2611         __le16 Attributes; /* verify not u32 */
2612         __u8   FileNameLength;
2613         char FileName[1];
2614 } __attribute__((packed)) FIND_FILE_STANDARD_INFO; /* level 0x1 FF resp data */
2615
2616
2617 struct win_dev {
2618         unsigned char type[8]; /* IntxCHR or IntxBLK */
2619         __le64 major;
2620         __le64 minor;
2621 } __attribute__((packed));
2622
2623 struct gea {
2624         unsigned char name_len;
2625         char name[1];
2626 } __attribute__((packed));
2627
2628 struct gealist {
2629         unsigned long list_len;
2630         struct gea list[1];
2631 } __attribute__((packed));
2632
2633 struct fea {
2634         unsigned char EA_flags;
2635         __u8 name_len;
2636         __le16 value_len;
2637         char name[1];
2638         /* optionally followed by value */
2639 } __attribute__((packed));
2640 /* flags for _FEA.fEA */
2641 #define FEA_NEEDEA         0x80 /* need EA bit */
2642
2643 struct fealist {
2644         __le32 list_len;
2645         struct fea list[1];
2646 } __attribute__((packed));
2647
2648 /* used to hold an arbitrary blob of data */
2649 struct data_blob {
2650         __u8 *data;
2651         size_t length;
2652         void (*free) (struct data_blob *data_blob);
2653 } __attribute__((packed));
2654
2655
2656 #ifdef CONFIG_CIFS_POSIX
2657 /*
2658         For better POSIX semantics from Linux client, (even better
2659         than the existing CIFS Unix Extensions) we need updated PDUs for:
2660
2661         1) PosixCreateX - to set and return the mode, inode#, device info and
2662         perhaps add a CreateDevice - to create Pipes and other special .inodes
2663         Also note POSIX open flags
2664         2) Close - to return the last write time to do cache across close
2665                 more safely
2666         3) FindFirst return unique inode number - what about resume key, two
2667         forms short (matches readdir) and full (enough info to cache inodes)
2668         4) Mkdir - set mode
2669
2670         And under consideration:
2671         5) FindClose2 (return nanosecond timestamp ??)
2672         6) Use nanosecond timestamps throughout all time fields if
2673            corresponding attribute flag is set
2674         7) sendfile - handle based copy
2675
2676         what about fixing 64 bit alignment
2677
2678         There are also various legacy SMB/CIFS requests used as is
2679
2680         From existing Lanman and NTLM dialects:
2681         --------------------------------------
2682         NEGOTIATE
2683         SESSION_SETUP_ANDX (BB which?)
2684         TREE_CONNECT_ANDX (BB which wct?)
2685         TREE_DISCONNECT (BB add volume timestamp on response)
2686         LOGOFF_ANDX
2687         DELETE (note delete open file behavior)
2688         DELETE_DIRECTORY
2689         READ_AND_X
2690         WRITE_AND_X
2691         LOCKING_AND_X (note posix lock semantics)
2692         RENAME (note rename across dirs and open file rename posix behaviors)
2693         NT_RENAME (for hardlinks) Is this good enough for all features?
2694         FIND_CLOSE2
2695         TRANSACTION2 (18 cases)
2696                 SMB_SET_FILE_END_OF_FILE_INFO2 SMB_SET_PATH_END_OF_FILE_INFO2
2697                 (BB verify that never need to set allocation size)
2698                 SMB_SET_FILE_BASIC_INFO2 (setting times - BB can it be done via
2699                          Unix ext?)
2700
2701         COPY (note support for copy across directories) - FUTURE, OPTIONAL
2702         setting/getting OS/2 EAs - FUTURE (BB can this handle
2703         setting Linux xattrs perfectly)         - OPTIONAL
2704         dnotify                                 - FUTURE, OPTIONAL
2705         quota                                   - FUTURE, OPTIONAL
2706
2707         Note that various requests implemented for NT interop such as
2708                 NT_TRANSACT (IOCTL) QueryReparseInfo
2709         are unneeded to servers compliant with the CIFS POSIX extensions
2710
2711         From CIFS Unix Extensions:
2712         -------------------------
2713         T2 SET_PATH_INFO (SMB_SET_FILE_UNIX_LINK) for symlinks
2714         T2 SET_PATH_INFO (SMB_SET_FILE_BASIC_INFO2)
2715         T2 QUERY_PATH_INFO (SMB_QUERY_FILE_UNIX_LINK)
2716         T2 QUERY_PATH_INFO (SMB_QUERY_FILE_UNIX_BASIC)  BB check for missing
2717                                                         inode fields
2718                                 Actually a need QUERY_FILE_UNIX_INFO
2719                                 since has inode num
2720                                 BB what about a) blksize/blkbits/blocks
2721                                                           b) i_version
2722                                                           c) i_rdev
2723                                                           d) notify mask?
2724                                                           e) generation
2725                                                           f) size_seqcount
2726         T2 FIND_FIRST/FIND_NEXT FIND_FILE_UNIX
2727         TRANS2_GET_DFS_REFERRAL               - OPTIONAL but recommended
2728         T2_QFS_INFO QueryDevice/AttributeInfo - OPTIONAL
2729  */
2730
2731 /* xsymlink is a symlink format (used by MacOS) that can be used
2732    to save symlink info in a regular file when
2733    mounted to operating systems that do not
2734    support the cifs Unix extensions or EAs (for xattr
2735    based symlinks).  For such a file to be recognized
2736    as containing symlink data:
2737
2738    1) file size must be 1067,
2739    2) signature must begin file data,
2740    3) length field must be set to ASCII representation
2741         of a number which is less than or equal to 1024,
2742    4) md5 must match that of the path data */
2743
2744 struct xsymlink {
2745         /* 1067 bytes */
2746         char signature[4]; /* XSym */ /* not null terminated */
2747         char cr0;         /* \n */
2748 /* ASCII representation of length (4 bytes decimal) terminated by \n not null */
2749         char length[4];
2750         char cr1;         /* \n */
2751 /* md5 of valid subset of path ie path[0] through path[length-1] */
2752         __u8 md5[32];
2753         char cr2;        /* \n */
2754 /* if room left, then end with \n then 0x20s by convention but not required */
2755         char path[1024];
2756 } __attribute__((packed));
2757
2758 typedef struct file_xattr_info {
2759         /* BB do we need another field for flags? BB */
2760         __u32 xattr_name_len;
2761         __u32 xattr_value_len;
2762         char  xattr_name[];
2763         /* followed by xattr_value[xattr_value_len], no pad */
2764 } __attribute__((packed)) FILE_XATTR_INFO; /* extended attribute info
2765                                               level 0x205 */
2766
2767 /* flags for lsattr and chflags commands removed arein uapi/linux/fs.h */
2768
2769 typedef struct file_chattr_info {
2770         __le64  mask; /* list of all possible attribute bits */
2771         __le64  mode; /* list of actual attribute bits on this inode */
2772 } __attribute__((packed)) FILE_CHATTR_INFO;  /* ext attributes
2773                                                 (chattr, chflags) level 0x206 */
2774 #endif                          /* POSIX */
2775 #endif                          /* _CIFSPDU_H */