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_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
 450                    struct cifsFileInfo *cfile)
 451 {
 452         return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
 453                             cfile->fid.volatile_fid);
 454 }
 455
 456 static int
 457 smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
 458                      const char *path, struct cifs_sb_info *cifs_sb,
 459                      struct cifs_fid *fid, __u16 search_flags,
 460                      struct cifs_search_info *srch_inf)
 461 {
 462         __le16 *utf16_path;
 463         int rc;
 464         __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 465         struct cifs_open_parms oparms;
 466
 467         utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
 468         if (!utf16_path)
 469                 return -ENOMEM;
 470
 471         oparms.tcon = tcon;
 472         oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
 473         oparms.disposition = FILE_OPEN;
 474         oparms.create_options = 0;
 475         oparms.fid = fid;
 476         oparms.reconnect = false;
 477
 478         rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
 479         kfree(utf16_path);
 480         if (rc) {
 481                 cifs_dbg(VFS, "open dir failed\n");
 482                 return rc;
 483         }
 484
 485         srch_inf->entries_in_buffer = 0;
 486         srch_inf->index_of_last_entry = 0;
 487
 488         rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
 489                                   fid->volatile_fid, 0, srch_inf);
 490         if (rc) {
 491                 cifs_dbg(VFS, "query directory failed\n");
 492                 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 493         }
 494         return rc;
 495 }
 496
 497 static int
 498 smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
 499                     struct cifs_fid *fid, __u16 search_flags,
 500                     struct cifs_search_info *srch_inf)
 501 {
 502         return SMB2_query_directory(xid, tcon, fid->persistent_fid,
 503                                     fid->volatile_fid, 0, srch_inf);
 504 }
 505
 506 static int
 507 smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
 508                struct cifs_fid *fid)
 509 {
 510         return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 511 }
 512
 513 /*
 514 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
 515 * the number of credits and return true. Otherwise - return false.
 516 */
 517 static bool
 518 smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
 519 {
 520         struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
 521
 522         if (hdr->Status != STATUS_PENDING)
 523                 return false;
 524
 525         if (!length) {
 526                 spin_lock(&server->req_lock);
 527                 server->credits += le16_to_cpu(hdr->CreditRequest);
 528                 spin_unlock(&server->req_lock);
 529                 wake_up(&server->request_q);
 530         }
 531
 532         return true;
 533 }
 534
 535 static int
 536 smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
 537                      struct cifsInodeInfo *cinode)
 538 {
 539         if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
 540                 return SMB2_lease_break(0, tcon, cinode->lease_key,
 541                                         smb2_get_lease_state(cinode));
 542
 543         return SMB2_oplock_break(0, tcon, fid->persistent_fid,
 544                                  fid->volatile_fid,
 545                                  CIFS_CACHE_READ(cinode) ? 1 : 0);
 546 }
 547
 548 static int
 549 smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
 550              struct kstatfs *buf)
 551 {
 552         int rc;
 553         __le16 srch_path = 0; /* Null - open root of share */
 554         u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 555         struct cifs_open_parms oparms;
 556         struct cifs_fid fid;
 557
 558         oparms.tcon = tcon;
 559         oparms.desired_access = FILE_READ_ATTRIBUTES;
 560         oparms.disposition = FILE_OPEN;
 561         oparms.create_options = 0;
 562         oparms.fid = &fid;
 563         oparms.reconnect = false;
 564
 565         rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
 566         if (rc)
 567                 return rc;
 568         buf->f_type = SMB2_MAGIC_NUMBER;
 569         rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
 570                            buf);
 571         SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
 572         return rc;
 573 }
 574
 575 static bool
 576 smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
 577 {
 578         return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
 579                ob1->fid.volatile_fid == ob2->fid.volatile_fid;
 580 }
 581
 582 static int
 583 smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
 584                __u64 length, __u32 type, int lock, int unlock, bool wait)
 585 {
 586         if (unlock && !lock)
 587                 type = SMB2_LOCKFLAG_UNLOCK;
 588         return SMB2_lock(xid, tlink_tcon(cfile->tlink),
 589                          cfile->fid.persistent_fid, cfile->fid.volatile_fid,
 590                          current->tgid, length, offset, type, wait);
 591 }
 592
 593 static void
 594 smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
 595 {
 596         memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
 597 }
 598
 599 static void
 600 smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
 601 {
 602         memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
 603 }
 604
 605 static void
 606 smb2_new_lease_key(struct cifs_fid *fid)
 607 {
 608         get_random_bytes(fid->lease_key, SMB2_LEASE_KEY_SIZE);
 609 }
 610
 611 static int
 612 smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
 613                    const char *full_path, char **target_path,
 614                    struct cifs_sb_info *cifs_sb)
 615 {
 616         int rc;
 617         __le16 *utf16_path;
 618         __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 619         struct cifs_open_parms oparms;
 620         struct cifs_fid fid;
 621         struct smb2_err_rsp *err_buf = NULL;
 622         struct smb2_symlink_err_rsp *symlink;
 623         unsigned int sub_len, sub_offset;
 624
 625         cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
 626
 627         utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
 628         if (!utf16_path)
 629                 return -ENOMEM;
 630
 631         oparms.tcon = tcon;
 632         oparms.desired_access = FILE_READ_ATTRIBUTES;
 633         oparms.disposition = FILE_OPEN;
 634         oparms.create_options = 0;
 635         oparms.fid = &fid;
 636         oparms.reconnect = false;
 637
 638         rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_buf);
 639
 640         if (!rc || !err_buf) {
 641                 kfree(utf16_path);
 642                 return -ENOENT;
 643         }
 644         /* open must fail on symlink - reset rc */
 645         rc = 0;
 646         symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
 647         sub_len = le16_to_cpu(symlink->SubstituteNameLength);
 648         sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
 649         *target_path = cifs_strndup_from_utf16(
 650                                 (char *)symlink->PathBuffer + sub_offset,
 651                                 sub_len, true, cifs_sb->local_nls);
 652         if (!(*target_path)) {
 653                 kfree(utf16_path);
 654                 return -ENOMEM;
 655         }
 656         convert_delimiter(*target_path, '/');
 657         cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
 658         kfree(utf16_path);
 659         return rc;
 660 }
 661
 662 static void
 663 smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
 664                       unsigned int epoch, bool *purge_cache)
 665 {
 666         oplock &= 0xFF;
 667         if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
 668                 return;
 669         if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
 670                 cinode->oplock = CIFS_CACHE_RHW_FLG;
 671                 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
 672                          &cinode->vfs_inode);
 673         } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
 674                 cinode->oplock = CIFS_CACHE_RW_FLG;
 675                 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
 676                          &cinode->vfs_inode);
 677         } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
 678                 cinode->oplock = CIFS_CACHE_READ_FLG;
 679                 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
 680                          &cinode->vfs_inode);
 681         } else
 682                 cinode->oplock = 0;
 683 }
 684
 685 static void
 686 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
 687                        unsigned int epoch, bool *purge_cache)
 688 {
 689         char message[5] = {0};
 690
 691         oplock &= 0xFF;
 692         if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
 693                 return;
 694
 695         cinode->oplock = 0;
 696         if (oplock & SMB2_LEASE_READ_CACHING_HE) {
 697                 cinode->oplock |= CIFS_CACHE_READ_FLG;
 698                 strcat(message, "R");
 699         }
 700         if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
 701                 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
 702                 strcat(message, "H");
 703         }
 704         if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
 705                 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
 706                 strcat(message, "W");
 707         }
 708         if (!cinode->oplock)
 709                 strcat(message, "None");
 710         cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
 711                  &cinode->vfs_inode);
 712 }
 713
 714 static void
 715 smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
 716                       unsigned int epoch, bool *purge_cache)
 717 {
 718         unsigned int old_oplock = cinode->oplock;
 719
 720         smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
 721
 722         if (purge_cache) {
 723                 *purge_cache = false;
 724                 if (old_oplock == CIFS_CACHE_READ_FLG) {
 725                         if (cinode->oplock == CIFS_CACHE_READ_FLG &&
 726                             (epoch - cinode->epoch > 0))
 727                                 *purge_cache = true;
 728                         else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
 729                                  (epoch - cinode->epoch > 1))
 730                                 *purge_cache = true;
 731                         else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
 732                                  (epoch - cinode->epoch > 1))
 733                                 *purge_cache = true;
 734                         else if (cinode->oplock == 0 &&
 735                                  (epoch - cinode->epoch > 0))
 736                                 *purge_cache = true;
 737                 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
 738                         if (cinode->oplock == CIFS_CACHE_RH_FLG &&
 739                             (epoch - cinode->epoch > 0))
 740                                 *purge_cache = true;
 741                         else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
 742                                  (epoch - cinode->epoch > 1))
 743                                 *purge_cache = true;
 744                 }
 745                 cinode->epoch = epoch;
 746         }
 747 }
 748
 749 static bool
 750 smb2_is_read_op(__u32 oplock)
 751 {
 752         return oplock == SMB2_OPLOCK_LEVEL_II;
 753 }
 754
 755 static bool
 756 smb21_is_read_op(__u32 oplock)
 757 {
 758         return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
 759                !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
 760 }
 761
 762 static __le32
 763 map_oplock_to_lease(u8 oplock)
 764 {
 765         if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
 766                 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
 767         else if (oplock == SMB2_OPLOCK_LEVEL_II)
 768                 return SMB2_LEASE_READ_CACHING;
 769         else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
 770                 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
 771                        SMB2_LEASE_WRITE_CACHING;
 772         return 0;
 773 }
 774
 775 static char *
 776 smb2_create_lease_buf(u8 *lease_key, u8 oplock)
 777 {
 778         struct create_lease *buf;
 779
 780         buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
 781         if (!buf)
 782                 return NULL;
 783
 784         buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
 785         buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
 786         buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
 787
 788         buf->ccontext.DataOffset = cpu_to_le16(offsetof
 789                                         (struct create_lease, lcontext));
 790         buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
 791         buf->ccontext.NameOffset = cpu_to_le16(offsetof
 792                                 (struct create_lease, Name));
 793         buf->ccontext.NameLength = cpu_to_le16(4);
 794         buf->Name[0] = 'R';
 795         buf->Name[1] = 'q';
 796         buf->Name[2] = 'L';
 797         buf->Name[3] = 's';
 798         return (char *)buf;
 799 }
 800
 801 static char *
 802 smb3_create_lease_buf(u8 *lease_key, u8 oplock)
 803 {
 804         struct create_lease_v2 *buf;
 805
 806         buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
 807         if (!buf)
 808                 return NULL;
 809
 810         buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
 811         buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
 812         buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
 813
 814         buf->ccontext.DataOffset = cpu_to_le16(offsetof
 815                                         (struct create_lease_v2, lcontext));
 816         buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
 817         buf->ccontext.NameOffset = cpu_to_le16(offsetof
 818                                 (struct create_lease_v2, Name));
 819         buf->ccontext.NameLength = cpu_to_le16(4);
 820         buf->Name[0] = 'R';
 821         buf->Name[1] = 'q';
 822         buf->Name[2] = 'L';
 823         buf->Name[3] = 's';
 824         return (char *)buf;
 825 }
 826
 827 static __u8
 828 smb2_parse_lease_buf(void *buf, unsigned int *epoch)
 829 {
 830         struct create_lease *lc = (struct create_lease *)buf;
 831
 832         *epoch = 0; /* not used */
 833         if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
 834                 return SMB2_OPLOCK_LEVEL_NOCHANGE;
 835         return le32_to_cpu(lc->lcontext.LeaseState);
 836 }
 837
 838 static __u8
 839 smb3_parse_lease_buf(void *buf, unsigned int *epoch)
 840 {
 841         struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
 842
 843         *epoch = le16_to_cpu(lc->lcontext.Epoch);
 844         if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
 845                 return SMB2_OPLOCK_LEVEL_NOCHANGE;
 846         return le32_to_cpu(lc->lcontext.LeaseState);
 847 }
 848
 849 struct smb_version_operations smb20_operations = {
 850         .compare_fids = smb2_compare_fids,
 851         .setup_request = smb2_setup_request,
 852         .setup_async_request = smb2_setup_async_request,
 853         .check_receive = smb2_check_receive,
 854         .add_credits = smb2_add_credits,
 855         .set_credits = smb2_set_credits,
 856         .get_credits_field = smb2_get_credits_field,
 857         .get_credits = smb2_get_credits,
 858         .get_next_mid = smb2_get_next_mid,
 859         .read_data_offset = smb2_read_data_offset,
 860         .read_data_length = smb2_read_data_length,
 861         .map_error = map_smb2_to_linux_error,
 862         .find_mid = smb2_find_mid,
 863         .check_message = smb2_check_message,
 864         .dump_detail = smb2_dump_detail,
 865         .clear_stats = smb2_clear_stats,
 866         .print_stats = smb2_print_stats,
 867         .is_oplock_break = smb2_is_valid_oplock_break,
 868         .need_neg = smb2_need_neg,
 869         .negotiate = smb2_negotiate,
 870         .negotiate_wsize = smb2_negotiate_wsize,
 871         .negotiate_rsize = smb2_negotiate_rsize,
 872         .sess_setup = SMB2_sess_setup,
 873         .logoff = SMB2_logoff,
 874         .tree_connect = SMB2_tcon,
 875         .tree_disconnect = SMB2_tdis,
 876         .is_path_accessible = smb2_is_path_accessible,
 877         .can_echo = smb2_can_echo,
 878         .echo = SMB2_echo,
 879         .query_path_info = smb2_query_path_info,
 880         .get_srv_inum = smb2_get_srv_inum,
 881         .query_file_info = smb2_query_file_info,
 882         .set_path_size = smb2_set_path_size,
 883         .set_file_size = smb2_set_file_size,
 884         .set_file_info = smb2_set_file_info,
 885         .set_compression = smb2_set_compression,
 886         .mkdir = smb2_mkdir,
 887         .mkdir_setinfo = smb2_mkdir_setinfo,
 888         .rmdir = smb2_rmdir,
 889         .unlink = smb2_unlink,
 890         .rename = smb2_rename_path,
 891         .create_hardlink = smb2_create_hardlink,
 892         .query_symlink = smb2_query_symlink,
 893         .open = smb2_open_file,
 894         .set_fid = smb2_set_fid,
 895         .close = smb2_close_file,
 896         .flush = smb2_flush_file,
 897         .async_readv = smb2_async_readv,
 898         .async_writev = smb2_async_writev,
 899         .sync_read = smb2_sync_read,
 900         .sync_write = smb2_sync_write,
 901         .query_dir_first = smb2_query_dir_first,
 902         .query_dir_next = smb2_query_dir_next,
 903         .close_dir = smb2_close_dir,
 904         .calc_smb_size = smb2_calc_size,
 905         .is_status_pending = smb2_is_status_pending,
 906         .oplock_response = smb2_oplock_response,
 907         .queryfs = smb2_queryfs,
 908         .mand_lock = smb2_mand_lock,
 909         .mand_unlock_range = smb2_unlock_range,
 910         .push_mand_locks = smb2_push_mandatory_locks,
 911         .get_lease_key = smb2_get_lease_key,
 912         .set_lease_key = smb2_set_lease_key,
 913         .new_lease_key = smb2_new_lease_key,
 914         .calc_signature = smb2_calc_signature,
 915         .is_read_op = smb2_is_read_op,
 916         .set_oplock_level = smb2_set_oplock_level,
 917         .create_lease_buf = smb2_create_lease_buf,
 918         .parse_lease_buf = smb2_parse_lease_buf,
 919 };
 920
 921 struct smb_version_operations smb21_operations = {
 922         .compare_fids = smb2_compare_fids,
 923         .setup_request = smb2_setup_request,
 924         .setup_async_request = smb2_setup_async_request,
 925         .check_receive = smb2_check_receive,
 926         .add_credits = smb2_add_credits,
 927         .set_credits = smb2_set_credits,
 928         .get_credits_field = smb2_get_credits_field,
 929         .get_credits = smb2_get_credits,
 930         .get_next_mid = smb2_get_next_mid,
 931         .read_data_offset = smb2_read_data_offset,
 932         .read_data_length = smb2_read_data_length,
 933         .map_error = map_smb2_to_linux_error,
 934         .find_mid = smb2_find_mid,
 935         .check_message = smb2_check_message,
 936         .dump_detail = smb2_dump_detail,
 937         .clear_stats = smb2_clear_stats,
 938         .print_stats = smb2_print_stats,
 939         .is_oplock_break = smb2_is_valid_oplock_break,
 940         .need_neg = smb2_need_neg,
 941         .negotiate = smb2_negotiate,
 942         .negotiate_wsize = smb2_negotiate_wsize,
 943         .negotiate_rsize = smb2_negotiate_rsize,
 944         .sess_setup = SMB2_sess_setup,
 945         .logoff = SMB2_logoff,
 946         .tree_connect = SMB2_tcon,
 947         .tree_disconnect = SMB2_tdis,
 948         .is_path_accessible = smb2_is_path_accessible,
 949         .can_echo = smb2_can_echo,
 950         .echo = SMB2_echo,
 951         .query_path_info = smb2_query_path_info,
 952         .get_srv_inum = smb2_get_srv_inum,
 953         .query_file_info = smb2_query_file_info,
 954         .set_path_size = smb2_set_path_size,
 955         .set_file_size = smb2_set_file_size,
 956         .set_file_info = smb2_set_file_info,
 957         .set_compression = smb2_set_compression,
 958         .mkdir = smb2_mkdir,
 959         .mkdir_setinfo = smb2_mkdir_setinfo,
 960         .rmdir = smb2_rmdir,
 961         .unlink = smb2_unlink,
 962         .rename = smb2_rename_path,
 963         .create_hardlink = smb2_create_hardlink,
 964         .query_symlink = smb2_query_symlink,
 965         .open = smb2_open_file,
 966         .set_fid = smb2_set_fid,
 967         .close = smb2_close_file,
 968         .flush = smb2_flush_file,
 969         .async_readv = smb2_async_readv,
 970         .async_writev = smb2_async_writev,
 971         .sync_read = smb2_sync_read,
 972         .sync_write = smb2_sync_write,
 973         .query_dir_first = smb2_query_dir_first,
 974         .query_dir_next = smb2_query_dir_next,
 975         .close_dir = smb2_close_dir,
 976         .calc_smb_size = smb2_calc_size,
 977         .is_status_pending = smb2_is_status_pending,
 978         .oplock_response = smb2_oplock_response,
 979         .queryfs = smb2_queryfs,
 980         .mand_lock = smb2_mand_lock,
 981         .mand_unlock_range = smb2_unlock_range,
 982         .push_mand_locks = smb2_push_mandatory_locks,
 983         .get_lease_key = smb2_get_lease_key,
 984         .set_lease_key = smb2_set_lease_key,
 985         .new_lease_key = smb2_new_lease_key,
 986         .calc_signature = smb2_calc_signature,
 987         .is_read_op = smb21_is_read_op,
 988         .set_oplock_level = smb21_set_oplock_level,
 989         .create_lease_buf = smb2_create_lease_buf,
 990         .parse_lease_buf = smb2_parse_lease_buf,
 991 };
 992
 993 struct smb_version_operations smb30_operations = {
 994         .compare_fids = smb2_compare_fids,
 995         .setup_request = smb2_setup_request,
 996         .setup_async_request = smb2_setup_async_request,
 997         .check_receive = smb2_check_receive,
 998         .add_credits = smb2_add_credits,
 999         .set_credits = smb2_set_credits,
1000         .get_credits_field = smb2_get_credits_field,
1001         .get_credits = smb2_get_credits,
1002         .get_next_mid = smb2_get_next_mid,
1003         .read_data_offset = smb2_read_data_offset,
1004         .read_data_length = smb2_read_data_length,
1005         .map_error = map_smb2_to_linux_error,
1006         .find_mid = smb2_find_mid,
1007         .check_message = smb2_check_message,
1008         .dump_detail = smb2_dump_detail,
1009         .clear_stats = smb2_clear_stats,
1010         .print_stats = smb2_print_stats,
1011         .dump_share_caps = smb2_dump_share_caps,
1012         .is_oplock_break = smb2_is_valid_oplock_break,
1013         .need_neg = smb2_need_neg,
1014         .negotiate = smb2_negotiate,
1015         .negotiate_wsize = smb2_negotiate_wsize,
1016         .negotiate_rsize = smb2_negotiate_rsize,
1017         .sess_setup = SMB2_sess_setup,
1018         .logoff = SMB2_logoff,
1019         .tree_connect = SMB2_tcon,
1020         .tree_disconnect = SMB2_tdis,
1021         .is_path_accessible = smb2_is_path_accessible,
1022         .can_echo = smb2_can_echo,
1023         .echo = SMB2_echo,
1024         .query_path_info = smb2_query_path_info,
1025         .get_srv_inum = smb2_get_srv_inum,
1026         .query_file_info = smb2_query_file_info,
1027         .set_path_size = smb2_set_path_size,
1028         .set_file_size = smb2_set_file_size,
1029         .set_file_info = smb2_set_file_info,
1030         .set_compression = smb2_set_compression,
1031         .mkdir = smb2_mkdir,
1032         .mkdir_setinfo = smb2_mkdir_setinfo,
1033         .rmdir = smb2_rmdir,
1034         .unlink = smb2_unlink,
1035         .rename = smb2_rename_path,
1036         .create_hardlink = smb2_create_hardlink,
1037         .query_symlink = smb2_query_symlink,
1038         .open = smb2_open_file,
1039         .set_fid = smb2_set_fid,
1040         .close = smb2_close_file,
1041         .flush = smb2_flush_file,
1042         .async_readv = smb2_async_readv,
1043         .async_writev = smb2_async_writev,
1044         .sync_read = smb2_sync_read,
1045         .sync_write = smb2_sync_write,
1046         .query_dir_first = smb2_query_dir_first,
1047         .query_dir_next = smb2_query_dir_next,
1048         .close_dir = smb2_close_dir,
1049         .calc_smb_size = smb2_calc_size,
1050         .is_status_pending = smb2_is_status_pending,
1051         .oplock_response = smb2_oplock_response,
1052         .queryfs = smb2_queryfs,
1053         .mand_lock = smb2_mand_lock,
1054         .mand_unlock_range = smb2_unlock_range,
1055         .push_mand_locks = smb2_push_mandatory_locks,
1056         .get_lease_key = smb2_get_lease_key,
1057         .set_lease_key = smb2_set_lease_key,
1058         .new_lease_key = smb2_new_lease_key,
1059         .generate_signingkey = generate_smb3signingkey,
1060         .calc_signature = smb3_calc_signature,
1061         .is_read_op = smb21_is_read_op,
1062         .set_oplock_level = smb3_set_oplock_level,
1063         .create_lease_buf = smb3_create_lease_buf,
1064         .parse_lease_buf = smb3_parse_lease_buf,
1065 };
1066
1067 struct smb_version_values smb20_values = {
1068         .version_string = SMB20_VERSION_STRING,
1069         .protocol_id = SMB20_PROT_ID,
1070         .req_capabilities = 0, /* MBZ */
1071         .large_lock_type = 0,
1072         .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1073         .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1074         .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1075         .header_size = sizeof(struct smb2_hdr),
1076         .max_header_size = MAX_SMB2_HDR_SIZE,
1077         .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1078         .lock_cmd = SMB2_LOCK,
1079         .cap_unix = 0,
1080         .cap_nt_find = SMB2_NT_FIND,
1081         .cap_large_files = SMB2_LARGE_FILES,
1082         .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1083         .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1084         .create_lease_size = sizeof(struct create_lease),
1085 };
1086
1087 struct smb_version_values smb21_values = {
1088         .version_string = SMB21_VERSION_STRING,
1089         .protocol_id = SMB21_PROT_ID,
1090         .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
1091         .large_lock_type = 0,
1092         .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1093         .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1094         .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1095         .header_size = sizeof(struct smb2_hdr),
1096         .max_header_size = MAX_SMB2_HDR_SIZE,
1097         .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1098         .lock_cmd = SMB2_LOCK,
1099         .cap_unix = 0,
1100         .cap_nt_find = SMB2_NT_FIND,
1101         .cap_large_files = SMB2_LARGE_FILES,
1102         .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1103         .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1104         .create_lease_size = sizeof(struct create_lease),
1105 };
1106
1107 struct smb_version_values smb30_values = {
1108         .version_string = SMB30_VERSION_STRING,
1109         .protocol_id = SMB30_PROT_ID,
1110         .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU,
1111         .large_lock_type = 0,
1112         .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1113         .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1114         .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1115         .header_size = sizeof(struct smb2_hdr),
1116         .max_header_size = MAX_SMB2_HDR_SIZE,
1117         .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1118         .lock_cmd = SMB2_LOCK,
1119         .cap_unix = 0,
1120         .cap_nt_find = SMB2_NT_FIND,
1121         .cap_large_files = SMB2_LARGE_FILES,
1122         .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1123         .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1124         .create_lease_size = sizeof(struct create_lease_v2),
1125 };
1126
1127 struct smb_version_values smb302_values = {
1128         .version_string = SMB302_VERSION_STRING,
1129         .protocol_id = SMB302_PROT_ID,
1130         .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU,
1131         .large_lock_type = 0,
1132         .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1133         .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1134         .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1135         .header_size = sizeof(struct smb2_hdr),
1136         .max_header_size = MAX_SMB2_HDR_SIZE,
1137         .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1138         .lock_cmd = SMB2_LOCK,
1139         .cap_unix = 0,
1140         .cap_nt_find = SMB2_NT_FIND,
1141         .cap_large_files = SMB2_LARGE_FILES,
1142         .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1143         .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1144         .create_lease_size = sizeof(struct create_lease_v2),
1145 };