fs/cifs/smb2ops.c

   1 /*
   2  *  SMB2 version specific operations
   3  *
   4  *  Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
   5  *
   6  *  This library is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License v2 as published
   8  *  by the Free Software Foundation.
   9  *
  10  *  This library is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  13  *  the GNU Lesser General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU Lesser General Public License
  16  *  along with this library; if not, write to the Free Software
  17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  18  */
  19
  20 #include <linux/pagemap.h>
  21 #include <linux/vfs.h>
  22 #include "cifsglob.h"
  23 #include "smb2pdu.h"
  24 #include "smb2proto.h"
  25 #include "cifsproto.h"
  26 #include "cifs_debug.h"
  27 #include "cifs_unicode.h"
  28 #include "smb2status.h"
  29 #include "smb2glob.h"
  30
  31 static int
  32 change_conf(struct TCP_Server_Info *server)
  33 {
  34         server->credits += server->echo_credits + server->oplock_credits;
  35         server->oplock_credits = server->echo_credits = 0;
  36         switch (server->credits) {
  37         case 0:
  38                 return -1;
  39         case 1:
  40                 server->echoes = false;
  41                 server->oplocks = false;
  42                 cifs_dbg(VFS, "disabling echoes and oplocks\n");
  43                 break;
  44         case 2:
  45                 server->echoes = true;
  46                 server->oplocks = false;
  47                 server->echo_credits = 1;
  48                 cifs_dbg(FYI, "disabling oplocks\n");
  49                 break;
  50         default:
  51                 server->echoes = true;
  52                 server->oplocks = true;
  53                 server->echo_credits = 1;
  54                 server->oplock_credits = 1;
  55         }
  56         server->credits -= server->echo_credits + server->oplock_credits;
  57         return 0;
  58 }
  59
  60 static void
  61 smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
  62                  const int optype)
  63 {
  64         int *val, rc = 0;
  65         spin_lock(&server->req_lock);
  66         val = server->ops->get_credits_field(server, optype);
  67         *val += add;
  68         server->in_flight--;
  69         if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
  70                 rc = change_conf(server);
  71         /*
  72          * Sometimes server returns 0 credits on oplock break ack - we need to
  73          * rebalance credits in this case.
  74          */
  75         else if (server->in_flight > 0 && server->oplock_credits == 0 &&
  76                  server->oplocks) {
  77                 if (server->credits > 1) {
  78                         server->credits--;
  79                         server->oplock_credits++;
  80                 }
  81         }
  82         spin_unlock(&server->req_lock);
  83         wake_up(&server->request_q);
  84         if (rc)
  85                 cifs_reconnect(server);
  86 }
  87
  88 static void
  89 smb2_set_credits(struct TCP_Server_Info *server, const int val)
  90 {
  91         spin_lock(&server->req_lock);
  92         server->credits = val;
  93         spin_unlock(&server->req_lock);
  94 }
  95
  96 static int *
  97 smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
  98 {
  99         switch (optype) {
 100         case CIFS_ECHO_OP:
 101                 return &server->echo_credits;
 102         case CIFS_OBREAK_OP:
 103                 return &server->oplock_credits;
 104         default:
 105                 return &server->credits;
 106         }
 107 }
 108
 109 static unsigned int
 110 smb2_get_credits(struct mid_q_entry *mid)
 111 {
 112         return le16_to_cpu(((struct smb2_hdr *)mid->resp_buf)->CreditRequest);
 113 }
 114
 115 static __u64
 116 smb2_get_next_mid(struct TCP_Server_Info *server)
 117 {
 118         __u64 mid;
 119         /* for SMB2 we need the current value */
 120         spin_lock(&GlobalMid_Lock);
 121         mid = server->CurrentMid++;
 122         spin_unlock(&GlobalMid_Lock);
 123         return mid;
 124 }
 125
 126 static struct mid_q_entry *
 127 smb2_find_mid(struct TCP_Server_Info *server, char *buf)
 128 {
 129         struct mid_q_entry *mid;
 130         struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
 131
 132         spin_lock(&GlobalMid_Lock);
 133         list_for_each_entry(mid, &server->pending_mid_q, qhead) {
 134                 if ((mid->mid == hdr->MessageId) &&
 135                     (mid->mid_state == MID_REQUEST_SUBMITTED) &&
 136                     (mid->command == hdr->Command)) {
 137                         spin_unlock(&GlobalMid_Lock);
 138                         return mid;
 139                 }
 140         }
 141         spin_unlock(&GlobalMid_Lock);
 142         return NULL;
 143 }
 144
 145 static void
 146 smb2_dump_detail(void *buf)
 147 {
 148 #ifdef CONFIG_CIFS_DEBUG2
 149         struct smb2_hdr *smb = (struct smb2_hdr *)buf;
 150
 151         cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
 152                  smb->Command, smb->Status, smb->Flags, smb->MessageId,
 153                  smb->ProcessId);
 154         cifs_dbg(VFS, "smb buf %p len %u\n", smb, smb2_calc_size(smb));
 155 #endif
 156 }
 157
 158 static bool
 159 smb2_need_neg(struct TCP_Server_Info *server)
 160 {
 161         return server->max_read == 0;
 162 }
 163
 164 static int
 165 smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
 166 {
 167         int rc;
 168         ses->server->CurrentMid = 0;
 169         rc = SMB2_negotiate(xid, ses);
 170         /* BB we probably don't need to retry with modern servers */
 171         if (rc == -EAGAIN)
 172                 rc = -EHOSTDOWN;
 173         return rc;
 174 }
 175
 176 static unsigned int
 177 smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
 178 {
 179         struct TCP_Server_Info *server = tcon->ses->server;
 180         unsigned int wsize;
 181
 182         /* start with specified wsize, or default */
 183         wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
 184         wsize = min_t(unsigned int, wsize, server->max_write);
 185         /*
 186          * limit write size to 2 ** 16, because we don't support multicredit
 187          * requests now.
 188          */
 189         wsize = min_t(unsigned int, wsize, 2 << 15);
 190
 191         return wsize;
 192 }
 193
 194 static unsigned int
 195 smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
 196 {
 197         struct TCP_Server_Info *server = tcon->ses->server;
 198         unsigned int rsize;
 199
 200         /* start with specified rsize, or default */
 201         rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
 202         rsize = min_t(unsigned int, rsize, server->max_read);
 203         /*
 204          * limit write size to 2 ** 16, because we don't support multicredit
 205          * requests now.
 206          */
 207         rsize = min_t(unsigned int, rsize, 2 << 15);
 208
 209         return rsize;
 210 }
 211
 212 static int
 213 smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
 214                         struct cifs_sb_info *cifs_sb, const char *full_path)
 215 {
 216         int rc;
 217         __le16 *utf16_path;
 218         __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 219         struct cifs_open_parms oparms;
 220         struct cifs_fid fid;
 221
 222         utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
 223         if (!utf16_path)
 224                 return -ENOMEM;
 225
 226         oparms.tcon = tcon;
 227         oparms.desired_access = FILE_READ_ATTRIBUTES;
 228         oparms.disposition = FILE_OPEN;
 229         oparms.create_options = 0;
 230         oparms.fid = &fid;
 231         oparms.reconnect = false;
 232
 233         rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
 234         if (rc) {
 235                 kfree(utf16_path);
 236                 return rc;
 237         }
 238
 239         rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
 240         kfree(utf16_path);
 241         return rc;
 242 }
 243
 244 static int
 245 smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
 246                   struct cifs_sb_info *cifs_sb, const char *full_path,
 247                   u64 *uniqueid, FILE_ALL_INFO *data)
 248 {
 249         *uniqueid = le64_to_cpu(data->IndexNumber);
 250         return 0;
 251 }
 252
 253 static int
 254 smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
 255                      struct cifs_fid *fid, FILE_ALL_INFO *data)
 256 {
 257         int rc;
 258         struct smb2_file_all_info *smb2_data;
 259
 260         smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2,
 261                             GFP_KERNEL);
 262         if (smb2_data == NULL)
 263                 return -ENOMEM;
 264
 265         rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
 266                              smb2_data);
 267         if (!rc)
 268                 move_smb2_info_to_cifs(data, smb2_data);
 269         kfree(smb2_data);
 270         return rc;
 271 }
 272
 273 static bool
 274 smb2_can_echo(struct TCP_Server_Info *server)
 275 {
 276         return server->echoes;
 277 }
 278
 279 static void
 280 smb2_clear_stats(struct cifs_tcon *tcon)
 281 {
 282 #ifdef CONFIG_CIFS_STATS
 283         int i;
 284         for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
 285                 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
 286                 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
 287         }
 288 #endif
 289 }
 290
 291 static void
 292 smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
 293 {
 294         seq_puts(m, "\n\tShare Capabilities:");
 295         if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
 296                 seq_puts(m, " DFS,");
 297         if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
 298                 seq_puts(m, " CONTINUOUS AVAILABILITY,");
 299         if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
 300                 seq_puts(m, " SCALEOUT,");
 301         if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
 302                 seq_puts(m, " CLUSTER,");
 303         if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
 304                 seq_puts(m, " ASYMMETRIC,");
 305         if (tcon->capabilities == 0)
 306                 seq_puts(m, " None");
 307         seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
 308 }
 309
 310 static void
 311 smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
 312 {
 313 #ifdef CONFIG_CIFS_STATS
 314         atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
 315         atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
 316         seq_printf(m, "\nNegotiates: %d sent %d failed",
 317                    atomic_read(&sent[SMB2_NEGOTIATE_HE]),
 318                    atomic_read(&failed[SMB2_NEGOTIATE_HE]));
 319         seq_printf(m, "\nSessionSetups: %d sent %d failed",
 320                    atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
 321                    atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
 322         seq_printf(m, "\nLogoffs: %d sent %d failed",
 323                    atomic_read(&sent[SMB2_LOGOFF_HE]),
 324                    atomic_read(&failed[SMB2_LOGOFF_HE]));
 325         seq_printf(m, "\nTreeConnects: %d sent %d failed",
 326                    atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
 327                    atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
 328         seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
 329                    atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
 330                    atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
 331         seq_printf(m, "\nCreates: %d sent %d failed",
 332                    atomic_read(&sent[SMB2_CREATE_HE]),
 333                    atomic_read(&failed[SMB2_CREATE_HE]));
 334         seq_printf(m, "\nCloses: %d sent %d failed",
 335                    atomic_read(&sent[SMB2_CLOSE_HE]),
 336                    atomic_read(&failed[SMB2_CLOSE_HE]));
 337         seq_printf(m, "\nFlushes: %d sent %d failed",
 338                    atomic_read(&sent[SMB2_FLUSH_HE]),
 339                    atomic_read(&failed[SMB2_FLUSH_HE]));
 340         seq_printf(m, "\nReads: %d sent %d failed",
 341                    atomic_read(&sent[SMB2_READ_HE]),
 342                    atomic_read(&failed[SMB2_READ_HE]));
 343         seq_printf(m, "\nWrites: %d sent %d failed",
 344                    atomic_read(&sent[SMB2_WRITE_HE]),
 345                    atomic_read(&failed[SMB2_WRITE_HE]));
 346         seq_printf(m, "\nLocks: %d sent %d failed",
 347                    atomic_read(&sent[SMB2_LOCK_HE]),
 348                    atomic_read(&failed[SMB2_LOCK_HE]));
 349         seq_printf(m, "\nIOCTLs: %d sent %d failed",
 350                    atomic_read(&sent[SMB2_IOCTL_HE]),
 351                    atomic_read(&failed[SMB2_IOCTL_HE]));
 352         seq_printf(m, "\nCancels: %d sent %d failed",
 353                    atomic_read(&sent[SMB2_CANCEL_HE]),
 354                    atomic_read(&failed[SMB2_CANCEL_HE]));
 355         seq_printf(m, "\nEchos: %d sent %d failed",
 356                    atomic_read(&sent[SMB2_ECHO_HE]),
 357                    atomic_read(&failed[SMB2_ECHO_HE]));
 358         seq_printf(m, "\nQueryDirectories: %d sent %d failed",
 359                    atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
 360                    atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
 361         seq_printf(m, "\nChangeNotifies: %d sent %d failed",
 362                    atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
 363                    atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
 364         seq_printf(m, "\nQueryInfos: %d sent %d failed",
 365                    atomic_read(&sent[SMB2_QUERY_INFO_HE]),
 366                    atomic_read(&failed[SMB2_QUERY_INFO_HE]));
 367         seq_printf(m, "\nSetInfos: %d sent %d failed",
 368                    atomic_read(&sent[SMB2_SET_INFO_HE]),
 369                    atomic_read(&failed[SMB2_SET_INFO_HE]));
 370         seq_printf(m, "\nOplockBreaks: %d sent %d failed",
 371                    atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
 372                    atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
 373 #endif
 374 }
 375
 376 static void
 377 smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
 378 {
 379         struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode);
 380         struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
 381
 382         cfile->fid.persistent_fid = fid->persistent_fid;
 383         cfile->fid.volatile_fid = fid->volatile_fid;
 384         server->ops->set_oplock_level(cinode, oplock, fid->epoch,
 385                                       &fid->purge_cache);
 386         cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
 387 }
 388
 389 static void
 390 smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
 391                 struct cifs_fid *fid)
 392 {
 393         SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 394 }
 395
 396 static int
 397 smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
 398                 struct cifs_fid *fid)
 399 {
 400         return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 401 }
 402
 403 static unsigned int
 404 smb2_read_data_offset(char *buf)
 405 {
 406         struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
 407         return rsp->DataOffset;
 408 }
 409
 410 static unsigned int
 411 smb2_read_data_length(char *buf)
 412 {
 413         struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
 414         return le32_to_cpu(rsp->DataLength);
 415 }
 416
 417
 418 static int
 419 smb2_sync_read(const unsigned int xid, struct cifsFileInfo *cfile,
 420                struct cifs_io_parms *parms, unsigned int *bytes_read,
 421                char **buf, int *buf_type)
 422 {
 423         parms->persistent_fid = cfile->fid.persistent_fid;
 424         parms->volatile_fid = cfile->fid.volatile_fid;
 425         return SMB2_read(xid, parms, bytes_read, buf, buf_type);
 426 }
 427
 428 static int
 429 smb2_sync_write(const unsigned int xid, struct cifsFileInfo *cfile,
 430                 struct cifs_io_parms *parms, unsigned int *written,
 431                 struct kvec *iov, unsigned long nr_segs)
 432 {
 433
 434         parms->persistent_fid = cfile->fid.persistent_fid;
 435         parms->volatile_fid = cfile->fid.volatile_fid;
 436         return SMB2_write(xid, parms, written, iov, nr_segs);
 437 }
 438
 439 static int
 440 smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
 441                    struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
 442 {
 443         __le64 eof = cpu_to_le64(size);
 444         return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
 445                             cfile->fid.volatile_fid, cfile->pid, &eof);
 446 }
 447
 448 static int
 449 smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
 450                      const char *path, struct cifs_sb_info *cifs_sb,
 451                      struct cifs_fid *fid, __u16 search_flags,
 452                      struct cifs_search_info *srch_inf)
 453 {
 454         __le16 *utf16_path;
 455         int rc;
 456         __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 457         struct cifs_open_parms oparms;
 458
 459         utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
 460         if (!utf16_path)
 461                 return -ENOMEM;
 462
 463         oparms.tcon = tcon;
 464         oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
 465         oparms.disposition = FILE_OPEN;
 466         oparms.create_options = 0;
 467         oparms.fid = fid;
 468         oparms.reconnect = false;
 469
 470         rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
 471         kfree(utf16_path);
 472         if (rc) {
 473                 cifs_dbg(VFS, "open dir failed\n");
 474                 return rc;
 475         }
 476
 477         srch_inf->entries_in_buffer = 0;
 478         srch_inf->index_of_last_entry = 0;
 479
 480         rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
 481                                   fid->volatile_fid, 0, srch_inf);
 482         if (rc) {
 483                 cifs_dbg(VFS, "query directory failed\n");
 484                 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 485         }
 486         return rc;
 487 }
 488
 489 static int
 490 smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
 491                     struct cifs_fid *fid, __u16 search_flags,
 492                     struct cifs_search_info *srch_inf)
 493 {
 494         return SMB2_query_directory(xid, tcon, fid->persistent_fid,
 495                                     fid->volatile_fid, 0, srch_inf);
 496 }
 497
 498 static int
 499 smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
 500                struct cifs_fid *fid)
 501 {
 502         return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 503 }
 504
 505 /*
 506 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
 507 * the number of credits and return true. Otherwise - return false.
 508 */
 509 static bool
 510 smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
 511 {
 512         struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
 513
 514         if (hdr->Status != STATUS_PENDING)
 515                 return false;
 516
 517         if (!length) {
 518                 spin_lock(&server->req_lock);
 519                 server->credits += le16_to_cpu(hdr->CreditRequest);
 520                 spin_unlock(&server->req_lock);
 521                 wake_up(&server->request_q);
 522         }
 523
 524         return true;
 525 }
 526
 527 static int
 528 smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
 529                      struct cifsInodeInfo *cinode)
 530 {
 531         if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
 532                 return SMB2_lease_break(0, tcon, cinode->lease_key,
 533                                         smb2_get_lease_state(cinode));
 534
 535         return SMB2_oplock_break(0, tcon, fid->persistent_fid,
 536                                  fid->volatile_fid,
 537                                  CIFS_CACHE_READ(cinode) ? 1 : 0);
 538 }
 539
 540 static int
 541 smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
 542              struct kstatfs *buf)
 543 {
 544         int rc;
 545         __le16 srch_path = 0; /* Null - open root of share */
 546         u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 547         struct cifs_open_parms oparms;
 548         struct cifs_fid fid;
 549
 550         oparms.tcon = tcon;
 551         oparms.desired_access = FILE_READ_ATTRIBUTES;
 552         oparms.disposition = FILE_OPEN;
 553         oparms.create_options = 0;
 554         oparms.fid = &fid;
 555         oparms.reconnect = false;
 556
 557         rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
 558         if (rc)
 559                 return rc;
 560         buf->f_type = SMB2_MAGIC_NUMBER;
 561         rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
 562                            buf);
 563         SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
 564         return rc;
 565 }
 566
 567 static bool
 568 smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
 569 {
 570         return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
 571                ob1->fid.volatile_fid == ob2->fid.volatile_fid;
 572 }
 573
 574 static int
 575 smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
 576                __u64 length, __u32 type, int lock, int unlock, bool wait)
 577 {
 578         if (unlock && !lock)
 579                 type = SMB2_LOCKFLAG_UNLOCK;
 580         return SMB2_lock(xid, tlink_tcon(cfile->tlink),
 581                          cfile->fid.persistent_fid, cfile->fid.volatile_fid,
 582                          current->tgid, length, offset, type, wait);
 583 }
 584
 585 static void
 586 smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
 587 {
 588         memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
 589 }
 590
 591 static void
 592 smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
 593 {
 594         memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
 595 }
 596
 597 static void
 598 smb2_new_lease_key(struct cifs_fid *fid)
 599 {
 600         get_random_bytes(fid->lease_key, SMB2_LEASE_KEY_SIZE);
 601 }
 602
 603 static int
 604 smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
 605                    const char *full_path, char **target_path,
 606                    struct cifs_sb_info *cifs_sb)
 607 {
 608         int rc;
 609         __le16 *utf16_path;
 610         __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 611         struct cifs_open_parms oparms;
 612         struct cifs_fid fid;
 613         struct smb2_err_rsp *err_buf = NULL;
 614         struct smb2_symlink_err_rsp *symlink;
 615         unsigned int sub_len, sub_offset;
 616
 617         cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
 618
 619         utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
 620         if (!utf16_path)
 621                 return -ENOMEM;
 622
 623         oparms.tcon = tcon;
 624         oparms.desired_access = FILE_READ_ATTRIBUTES;
 625         oparms.disposition = FILE_OPEN;
 626         oparms.create_options = 0;
 627         oparms.fid = &fid;
 628         oparms.reconnect = false;
 629
 630         rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_buf);
 631
 632         if (!rc || !err_buf) {
 633                 kfree(utf16_path);
 634                 return -ENOENT;
 635         }
 636         /* open must fail on symlink - reset rc */
 637         rc = 0;
 638         symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
 639         sub_len = le16_to_cpu(symlink->SubstituteNameLength);
 640         sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
 641         *target_path = cifs_strndup_from_utf16(
 642                                 (char *)symlink->PathBuffer + sub_offset,
 643                                 sub_len, true, cifs_sb->local_nls);
 644         if (!(*target_path)) {
 645                 kfree(utf16_path);
 646                 return -ENOMEM;
 647         }
 648         convert_delimiter(*target_path, '/');
 649         cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
 650         kfree(utf16_path);
 651         return rc;
 652 }
 653
 654 static void
 655 smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
 656                       unsigned int epoch, bool *purge_cache)
 657 {
 658         oplock &= 0xFF;
 659         if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
 660                 return;
 661         if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
 662                 cinode->oplock = CIFS_CACHE_RHW_FLG;
 663                 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
 664                          &cinode->vfs_inode);
 665         } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
 666                 cinode->oplock = CIFS_CACHE_RW_FLG;
 667                 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
 668                          &cinode->vfs_inode);
 669         } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
 670                 cinode->oplock = CIFS_CACHE_READ_FLG;
 671                 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
 672                          &cinode->vfs_inode);
 673         } else
 674                 cinode->oplock = 0;
 675 }
 676
 677 static void
 678 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
 679                        unsigned int epoch, bool *purge_cache)
 680 {
 681         char message[5] = {0};
 682
 683         oplock &= 0xFF;
 684         if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
 685                 return;
 686
 687         cinode->oplock = 0;
 688         if (oplock & SMB2_LEASE_READ_CACHING_HE) {
 689                 cinode->oplock |= CIFS_CACHE_READ_FLG;
 690                 strcat(message, "R");
 691         }
 692         if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
 693                 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
 694                 strcat(message, "H");
 695         }
 696         if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
 697                 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
 698                 strcat(message, "W");
 699         }
 700         if (!cinode->oplock)
 701                 strcat(message, "None");
 702         cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
 703                  &cinode->vfs_inode);
 704 }
 705
 706 static void
 707 smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
 708                       unsigned int epoch, bool *purge_cache)
 709 {
 710         unsigned int old_oplock = cinode->oplock;
 711
 712         smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
 713
 714         if (purge_cache) {
 715                 *purge_cache = false;
 716                 if (old_oplock == CIFS_CACHE_READ_FLG) {
 717                         if (cinode->oplock == CIFS_CACHE_READ_FLG &&
 718                             (epoch - cinode->epoch > 0))
 719                                 *purge_cache = true;
 720                         else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
 721                                  (epoch - cinode->epoch > 1))
 722                                 *purge_cache = true;
 723                         else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
 724                                  (epoch - cinode->epoch > 1))
 725                                 *purge_cache = true;
 726                         else if (cinode->oplock == 0 &&
 727                                  (epoch - cinode->epoch > 0))
 728                                 *purge_cache = true;
 729                 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
 730                         if (cinode->oplock == CIFS_CACHE_RH_FLG &&
 731                             (epoch - cinode->epoch > 0))
 732                                 *purge_cache = true;
 733                         else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
 734                                  (epoch - cinode->epoch > 1))
 735                                 *purge_cache = true;
 736                 }
 737                 cinode->epoch = epoch;
 738         }
 739 }
 740
 741 static bool
 742 smb2_is_read_op(__u32 oplock)
 743 {
 744         return oplock == SMB2_OPLOCK_LEVEL_II;
 745 }
 746
 747 static bool
 748 smb21_is_read_op(__u32 oplock)
 749 {
 750         return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
 751                !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
 752 }
 753
 754 static __le32
 755 map_oplock_to_lease(u8 oplock)
 756 {
 757         if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
 758                 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
 759         else if (oplock == SMB2_OPLOCK_LEVEL_II)
 760                 return SMB2_LEASE_READ_CACHING;
 761         else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
 762                 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
 763                        SMB2_LEASE_WRITE_CACHING;
 764         return 0;
 765 }
 766
 767 static char *
 768 smb2_create_lease_buf(u8 *lease_key, u8 oplock)
 769 {
 770         struct create_lease *buf;
 771
 772         buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
 773         if (!buf)
 774                 return NULL;
 775
 776         buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
 777         buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
 778         buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
 779
 780         buf->ccontext.DataOffset = cpu_to_le16(offsetof
 781                                         (struct create_lease, lcontext));
 782         buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
 783         buf->ccontext.NameOffset = cpu_to_le16(offsetof
 784                                 (struct create_lease, Name));
 785         buf->ccontext.NameLength = cpu_to_le16(4);
 786         buf->Name[0] = 'R';
 787         buf->Name[1] = 'q';
 788         buf->Name[2] = 'L';
 789         buf->Name[3] = 's';
 790         return (char *)buf;
 791 }
 792
 793 static char *
 794 smb3_create_lease_buf(u8 *lease_key, u8 oplock)
 795 {
 796         struct create_lease_v2 *buf;
 797
 798         buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
 799         if (!buf)
 800                 return NULL;
 801
 802         buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
 803         buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
 804         buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
 805
 806         buf->ccontext.DataOffset = cpu_to_le16(offsetof
 807                                         (struct create_lease_v2, lcontext));
 808         buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
 809         buf->ccontext.NameOffset = cpu_to_le16(offsetof
 810                                 (struct create_lease_v2, Name));
 811         buf->ccontext.NameLength = cpu_to_le16(4);
 812         buf->Name[0] = 'R';
 813         buf->Name[1] = 'q';
 814         buf->Name[2] = 'L';
 815         buf->Name[3] = 's';
 816         return (char *)buf;
 817 }
 818
 819 static __u8
 820 smb2_parse_lease_buf(void *buf, unsigned int *epoch)
 821 {
 822         struct create_lease *lc = (struct create_lease *)buf;
 823
 824         *epoch = 0; /* not used */
 825         if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
 826                 return SMB2_OPLOCK_LEVEL_NOCHANGE;
 827         return le32_to_cpu(lc->lcontext.LeaseState);
 828 }
 829
 830 static __u8
 831 smb3_parse_lease_buf(void *buf, unsigned int *epoch)
 832 {
 833         struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
 834
 835         *epoch = le16_to_cpu(lc->lcontext.Epoch);
 836         if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
 837                 return SMB2_OPLOCK_LEVEL_NOCHANGE;
 838         return le32_to_cpu(lc->lcontext.LeaseState);
 839 }
 840
 841 struct smb_version_operations smb20_operations = {
 842         .compare_fids = smb2_compare_fids,
 843         .setup_request = smb2_setup_request,
 844         .setup_async_request = smb2_setup_async_request,
 845         .check_receive = smb2_check_receive,
 846         .add_credits = smb2_add_credits,
 847         .set_credits = smb2_set_credits,
 848         .get_credits_field = smb2_get_credits_field,
 849         .get_credits = smb2_get_credits,
 850         .get_next_mid = smb2_get_next_mid,
 851         .read_data_offset = smb2_read_data_offset,
 852         .read_data_length = smb2_read_data_length,
 853         .map_error = map_smb2_to_linux_error,
 854         .find_mid = smb2_find_mid,
 855         .check_message = smb2_check_message,
 856         .dump_detail = smb2_dump_detail,
 857         .clear_stats = smb2_clear_stats,
 858         .print_stats = smb2_print_stats,
 859         .is_oplock_break = smb2_is_valid_oplock_break,
 860         .need_neg = smb2_need_neg,
 861         .negotiate = smb2_negotiate,
 862         .negotiate_wsize = smb2_negotiate_wsize,
 863         .negotiate_rsize = smb2_negotiate_rsize,
 864         .sess_setup = SMB2_sess_setup,
 865         .logoff = SMB2_logoff,
 866         .tree_connect = SMB2_tcon,
 867         .tree_disconnect = SMB2_tdis,
 868         .is_path_accessible = smb2_is_path_accessible,
 869         .can_echo = smb2_can_echo,
 870         .echo = SMB2_echo,
 871         .query_path_info = smb2_query_path_info,
 872         .get_srv_inum = smb2_get_srv_inum,
 873         .query_file_info = smb2_query_file_info,
 874         .set_path_size = smb2_set_path_size,
 875         .set_file_size = smb2_set_file_size,
 876         .set_file_info = smb2_set_file_info,
 877         .mkdir = smb2_mkdir,
 878         .mkdir_setinfo = smb2_mkdir_setinfo,
 879         .rmdir = smb2_rmdir,
 880         .unlink = smb2_unlink,
 881         .rename = smb2_rename_path,
 882         .create_hardlink = smb2_create_hardlink,
 883         .query_symlink = smb2_query_symlink,
 884         .open = smb2_open_file,
 885         .set_fid = smb2_set_fid,
 886         .close = smb2_close_file,
 887         .flush = smb2_flush_file,
 888         .async_readv = smb2_async_readv,
 889         .async_writev = smb2_async_writev,
 890         .sync_read = smb2_sync_read,
 891         .sync_write = smb2_sync_write,
 892         .query_dir_first = smb2_query_dir_first,
 893         .query_dir_next = smb2_query_dir_next,
 894         .close_dir = smb2_close_dir,
 895         .calc_smb_size = smb2_calc_size,
 896         .is_status_pending = smb2_is_status_pending,
 897         .oplock_response = smb2_oplock_response,
 898         .queryfs = smb2_queryfs,
 899         .mand_lock = smb2_mand_lock,
 900         .mand_unlock_range = smb2_unlock_range,
 901         .push_mand_locks = smb2_push_mandatory_locks,
 902         .get_lease_key = smb2_get_lease_key,
 903         .set_lease_key = smb2_set_lease_key,
 904         .new_lease_key = smb2_new_lease_key,
 905         .calc_signature = smb2_calc_signature,
 906         .is_read_op = smb2_is_read_op,
 907         .set_oplock_level = smb2_set_oplock_level,
 908         .create_lease_buf = smb2_create_lease_buf,
 909         .parse_lease_buf = smb2_parse_lease_buf,
 910 };
 911
 912 struct smb_version_operations smb21_operations = {
 913         .compare_fids = smb2_compare_fids,
 914         .setup_request = smb2_setup_request,
 915         .setup_async_request = smb2_setup_async_request,
 916         .check_receive = smb2_check_receive,
 917         .add_credits = smb2_add_credits,
 918         .set_credits = smb2_set_credits,
 919         .get_credits_field = smb2_get_credits_field,
 920         .get_credits = smb2_get_credits,
 921         .get_next_mid = smb2_get_next_mid,
 922         .read_data_offset = smb2_read_data_offset,
 923         .read_data_length = smb2_read_data_length,
 924         .map_error = map_smb2_to_linux_error,
 925         .find_mid = smb2_find_mid,
 926         .check_message = smb2_check_message,
 927         .dump_detail = smb2_dump_detail,
 928         .clear_stats = smb2_clear_stats,
 929         .print_stats = smb2_print_stats,
 930         .is_oplock_break = smb2_is_valid_oplock_break,
 931         .need_neg = smb2_need_neg,
 932         .negotiate = smb2_negotiate,
 933         .negotiate_wsize = smb2_negotiate_wsize,
 934         .negotiate_rsize = smb2_negotiate_rsize,
 935         .sess_setup = SMB2_sess_setup,
 936         .logoff = SMB2_logoff,
 937         .tree_connect = SMB2_tcon,
 938         .tree_disconnect = SMB2_tdis,
 939         .is_path_accessible = smb2_is_path_accessible,
 940         .can_echo = smb2_can_echo,
 941         .echo = SMB2_echo,
 942         .query_path_info = smb2_query_path_info,
 943         .get_srv_inum = smb2_get_srv_inum,
 944         .query_file_info = smb2_query_file_info,
 945         .set_path_size = smb2_set_path_size,
 946         .set_file_size = smb2_set_file_size,
 947         .set_file_info = smb2_set_file_info,
 948         .mkdir = smb2_mkdir,
 949         .mkdir_setinfo = smb2_mkdir_setinfo,
 950         .rmdir = smb2_rmdir,
 951         .unlink = smb2_unlink,
 952         .rename = smb2_rename_path,
 953         .create_hardlink = smb2_create_hardlink,
 954         .query_symlink = smb2_query_symlink,
 955         .open = smb2_open_file,
 956         .set_fid = smb2_set_fid,
 957         .close = smb2_close_file,
 958         .flush = smb2_flush_file,
 959         .async_readv = smb2_async_readv,
 960         .async_writev = smb2_async_writev,
 961         .sync_read = smb2_sync_read,
 962         .sync_write = smb2_sync_write,
 963         .query_dir_first = smb2_query_dir_first,
 964         .query_dir_next = smb2_query_dir_next,
 965         .close_dir = smb2_close_dir,
 966         .calc_smb_size = smb2_calc_size,
 967         .is_status_pending = smb2_is_status_pending,
 968         .oplock_response = smb2_oplock_response,
 969         .queryfs = smb2_queryfs,
 970         .mand_lock = smb2_mand_lock,
 971         .mand_unlock_range = smb2_unlock_range,
 972         .push_mand_locks = smb2_push_mandatory_locks,
 973         .get_lease_key = smb2_get_lease_key,
 974         .set_lease_key = smb2_set_lease_key,
 975         .new_lease_key = smb2_new_lease_key,
 976         .calc_signature = smb2_calc_signature,
 977         .is_read_op = smb21_is_read_op,
 978         .set_oplock_level = smb21_set_oplock_level,
 979         .create_lease_buf = smb2_create_lease_buf,
 980         .parse_lease_buf = smb2_parse_lease_buf,
 981 };
 982
 983 struct smb_version_operations smb30_operations = {
 984         .compare_fids = smb2_compare_fids,
 985         .setup_request = smb2_setup_request,
 986         .setup_async_request = smb2_setup_async_request,
 987         .check_receive = smb2_check_receive,
 988         .add_credits = smb2_add_credits,
 989         .set_credits = smb2_set_credits,
 990         .get_credits_field = smb2_get_credits_field,
 991         .get_credits = smb2_get_credits,
 992         .get_next_mid = smb2_get_next_mid,
 993         .read_data_offset = smb2_read_data_offset,
 994         .read_data_length = smb2_read_data_length,
 995         .map_error = map_smb2_to_linux_error,
 996         .find_mid = smb2_find_mid,
 997         .check_message = smb2_check_message,
 998         .dump_detail = smb2_dump_detail,
 999         .clear_stats = smb2_clear_stats,
1000         .print_stats = smb2_print_stats,
1001         .dump_share_caps = smb2_dump_share_caps,
1002         .is_oplock_break = smb2_is_valid_oplock_break,
1003         .need_neg = smb2_need_neg,
1004         .negotiate = smb2_negotiate,
1005         .negotiate_wsize = smb2_negotiate_wsize,
1006         .negotiate_rsize = smb2_negotiate_rsize,
1007         .sess_setup = SMB2_sess_setup,
1008         .logoff = SMB2_logoff,
1009         .tree_connect = SMB2_tcon,
1010         .tree_disconnect = SMB2_tdis,
1011         .is_path_accessible = smb2_is_path_accessible,
1012         .can_echo = smb2_can_echo,
1013         .echo = SMB2_echo,
1014         .query_path_info = smb2_query_path_info,
1015         .get_srv_inum = smb2_get_srv_inum,
1016         .query_file_info = smb2_query_file_info,
1017         .set_path_size = smb2_set_path_size,
1018         .set_file_size = smb2_set_file_size,
1019         .set_file_info = smb2_set_file_info,
1020         .mkdir = smb2_mkdir,
1021         .mkdir_setinfo = smb2_mkdir_setinfo,
1022         .rmdir = smb2_rmdir,
1023         .unlink = smb2_unlink,
1024         .rename = smb2_rename_path,
1025         .create_hardlink = smb2_create_hardlink,
1026         .query_symlink = smb2_query_symlink,
1027         .open = smb2_open_file,
1028         .set_fid = smb2_set_fid,
1029         .close = smb2_close_file,
1030         .flush = smb2_flush_file,
1031         .async_readv = smb2_async_readv,
1032         .async_writev = smb2_async_writev,
1033         .sync_read = smb2_sync_read,
1034         .sync_write = smb2_sync_write,
1035         .query_dir_first = smb2_query_dir_first,
1036         .query_dir_next = smb2_query_dir_next,
1037         .close_dir = smb2_close_dir,
1038         .calc_smb_size = smb2_calc_size,
1039         .is_status_pending = smb2_is_status_pending,
1040         .oplock_response = smb2_oplock_response,
1041         .queryfs = smb2_queryfs,
1042         .mand_lock = smb2_mand_lock,
1043         .mand_unlock_range = smb2_unlock_range,
1044         .push_mand_locks = smb2_push_mandatory_locks,
1045         .get_lease_key = smb2_get_lease_key,
1046         .set_lease_key = smb2_set_lease_key,
1047         .new_lease_key = smb2_new_lease_key,
1048         .generate_signingkey = generate_smb3signingkey,
1049         .calc_signature = smb3_calc_signature,
1050         .is_read_op = smb21_is_read_op,
1051         .set_oplock_level = smb3_set_oplock_level,
1052         .create_lease_buf = smb3_create_lease_buf,
1053         .parse_lease_buf = smb3_parse_lease_buf,
1054 };
1055
1056 struct smb_version_values smb20_values = {
1057         .version_string = SMB20_VERSION_STRING,
1058         .protocol_id = SMB20_PROT_ID,
1059         .req_capabilities = 0, /* MBZ */
1060         .large_lock_type = 0,
1061         .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1062         .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1063         .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1064         .header_size = sizeof(struct smb2_hdr),
1065         .max_header_size = MAX_SMB2_HDR_SIZE,
1066         .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1067         .lock_cmd = SMB2_LOCK,
1068         .cap_unix = 0,
1069         .cap_nt_find = SMB2_NT_FIND,
1070         .cap_large_files = SMB2_LARGE_FILES,
1071         .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1072         .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1073         .create_lease_size = sizeof(struct create_lease),
1074 };
1075
1076 struct smb_version_values smb21_values = {
1077         .version_string = SMB21_VERSION_STRING,
1078         .protocol_id = SMB21_PROT_ID,
1079         .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
1080         .large_lock_type = 0,
1081         .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1082         .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1083         .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1084         .header_size = sizeof(struct smb2_hdr),
1085         .max_header_size = MAX_SMB2_HDR_SIZE,
1086         .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1087         .lock_cmd = SMB2_LOCK,
1088         .cap_unix = 0,
1089         .cap_nt_find = SMB2_NT_FIND,
1090         .cap_large_files = SMB2_LARGE_FILES,
1091         .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1092         .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1093         .create_lease_size = sizeof(struct create_lease),
1094 };
1095
1096 struct smb_version_values smb30_values = {
1097         .version_string = SMB30_VERSION_STRING,
1098         .protocol_id = SMB30_PROT_ID,
1099         .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU,
1100         .large_lock_type = 0,
1101         .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1102         .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1103         .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1104         .header_size = sizeof(struct smb2_hdr),
1105         .max_header_size = MAX_SMB2_HDR_SIZE,
1106         .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1107         .lock_cmd = SMB2_LOCK,
1108         .cap_unix = 0,
1109         .cap_nt_find = SMB2_NT_FIND,
1110         .cap_large_files = SMB2_LARGE_FILES,
1111         .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1112         .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1113         .create_lease_size = sizeof(struct create_lease_v2),
1114 };
1115
1116 struct smb_version_values smb302_values = {
1117         .version_string = SMB302_VERSION_STRING,
1118         .protocol_id = SMB302_PROT_ID,
1119         .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU,
1120         .large_lock_type = 0,
1121         .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1122         .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1123         .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1124         .header_size = sizeof(struct smb2_hdr),
1125         .max_header_size = MAX_SMB2_HDR_SIZE,
1126         .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1127         .lock_cmd = SMB2_LOCK,
1128         .cap_unix = 0,
1129         .cap_nt_find = SMB2_NT_FIND,
1130         .cap_large_files = SMB2_LARGE_FILES,
1131         .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1132         .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1133         .create_lease_size = sizeof(struct create_lease_v2),
1134 };