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         /* set it to the maximum buffer size value we can send with 1 credit */
 186         wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
 187
 188         return wsize;
 189 }
 190
 191 static unsigned int
 192 smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
 193 {
 194         struct TCP_Server_Info *server = tcon->ses->server;
 195         unsigned int rsize;
 196
 197         /* start with specified rsize, or default */
 198         rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
 199         rsize = min_t(unsigned int, rsize, server->max_read);
 200         /* set it to the maximum buffer size value we can send with 1 credit */
 201         rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
 202
 203         return rsize;
 204 }
 205
 206 static int
 207 smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
 208                         struct cifs_sb_info *cifs_sb, const char *full_path)
 209 {
 210         int rc;
 211         __le16 *utf16_path;
 212         __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 213         struct cifs_open_parms oparms;
 214         struct cifs_fid fid;
 215
 216         utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
 217         if (!utf16_path)
 218                 return -ENOMEM;
 219
 220         oparms.tcon = tcon;
 221         oparms.desired_access = FILE_READ_ATTRIBUTES;
 222         oparms.disposition = FILE_OPEN;
 223         oparms.create_options = 0;
 224         oparms.fid = &fid;
 225         oparms.reconnect = false;
 226
 227         rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
 228         if (rc) {
 229                 kfree(utf16_path);
 230                 return rc;
 231         }
 232
 233         rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
 234         kfree(utf16_path);
 235         return rc;
 236 }
 237
 238 static int
 239 smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
 240                   struct cifs_sb_info *cifs_sb, const char *full_path,
 241                   u64 *uniqueid, FILE_ALL_INFO *data)
 242 {
 243         *uniqueid = le64_to_cpu(data->IndexNumber);
 244         return 0;
 245 }
 246
 247 static int
 248 smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
 249                      struct cifs_fid *fid, FILE_ALL_INFO *data)
 250 {
 251         int rc;
 252         struct smb2_file_all_info *smb2_data;
 253
 254         smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2,
 255                             GFP_KERNEL);
 256         if (smb2_data == NULL)
 257                 return -ENOMEM;
 258
 259         rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
 260                              smb2_data);
 261         if (!rc)
 262                 move_smb2_info_to_cifs(data, smb2_data);
 263         kfree(smb2_data);
 264         return rc;
 265 }
 266
 267 static bool
 268 smb2_can_echo(struct TCP_Server_Info *server)
 269 {
 270         return server->echoes;
 271 }
 272
 273 static void
 274 smb2_clear_stats(struct cifs_tcon *tcon)
 275 {
 276 #ifdef CONFIG_CIFS_STATS
 277         int i;
 278         for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
 279                 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
 280                 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
 281         }
 282 #endif
 283 }
 284
 285 static void
 286 smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
 287 {
 288         seq_puts(m, "\n\tShare Capabilities:");
 289         if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
 290                 seq_puts(m, " DFS,");
 291         if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
 292                 seq_puts(m, " CONTINUOUS AVAILABILITY,");
 293         if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
 294                 seq_puts(m, " SCALEOUT,");
 295         if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
 296                 seq_puts(m, " CLUSTER,");
 297         if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
 298                 seq_puts(m, " ASYMMETRIC,");
 299         if (tcon->capabilities == 0)
 300                 seq_puts(m, " None");
 301         seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
 302 }
 303
 304 static void
 305 smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
 306 {
 307 #ifdef CONFIG_CIFS_STATS
 308         atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
 309         atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
 310         seq_printf(m, "\nNegotiates: %d sent %d failed",
 311                    atomic_read(&sent[SMB2_NEGOTIATE_HE]),
 312                    atomic_read(&failed[SMB2_NEGOTIATE_HE]));
 313         seq_printf(m, "\nSessionSetups: %d sent %d failed",
 314                    atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
 315                    atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
 316         seq_printf(m, "\nLogoffs: %d sent %d failed",
 317                    atomic_read(&sent[SMB2_LOGOFF_HE]),
 318                    atomic_read(&failed[SMB2_LOGOFF_HE]));
 319         seq_printf(m, "\nTreeConnects: %d sent %d failed",
 320                    atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
 321                    atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
 322         seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
 323                    atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
 324                    atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
 325         seq_printf(m, "\nCreates: %d sent %d failed",
 326                    atomic_read(&sent[SMB2_CREATE_HE]),
 327                    atomic_read(&failed[SMB2_CREATE_HE]));
 328         seq_printf(m, "\nCloses: %d sent %d failed",
 329                    atomic_read(&sent[SMB2_CLOSE_HE]),
 330                    atomic_read(&failed[SMB2_CLOSE_HE]));
 331         seq_printf(m, "\nFlushes: %d sent %d failed",
 332                    atomic_read(&sent[SMB2_FLUSH_HE]),
 333                    atomic_read(&failed[SMB2_FLUSH_HE]));
 334         seq_printf(m, "\nReads: %d sent %d failed",
 335                    atomic_read(&sent[SMB2_READ_HE]),
 336                    atomic_read(&failed[SMB2_READ_HE]));
 337         seq_printf(m, "\nWrites: %d sent %d failed",
 338                    atomic_read(&sent[SMB2_WRITE_HE]),
 339                    atomic_read(&failed[SMB2_WRITE_HE]));
 340         seq_printf(m, "\nLocks: %d sent %d failed",
 341                    atomic_read(&sent[SMB2_LOCK_HE]),
 342                    atomic_read(&failed[SMB2_LOCK_HE]));
 343         seq_printf(m, "\nIOCTLs: %d sent %d failed",
 344                    atomic_read(&sent[SMB2_IOCTL_HE]),
 345                    atomic_read(&failed[SMB2_IOCTL_HE]));
 346         seq_printf(m, "\nCancels: %d sent %d failed",
 347                    atomic_read(&sent[SMB2_CANCEL_HE]),
 348                    atomic_read(&failed[SMB2_CANCEL_HE]));
 349         seq_printf(m, "\nEchos: %d sent %d failed",
 350                    atomic_read(&sent[SMB2_ECHO_HE]),
 351                    atomic_read(&failed[SMB2_ECHO_HE]));
 352         seq_printf(m, "\nQueryDirectories: %d sent %d failed",
 353                    atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
 354                    atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
 355         seq_printf(m, "\nChangeNotifies: %d sent %d failed",
 356                    atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
 357                    atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
 358         seq_printf(m, "\nQueryInfos: %d sent %d failed",
 359                    atomic_read(&sent[SMB2_QUERY_INFO_HE]),
 360                    atomic_read(&failed[SMB2_QUERY_INFO_HE]));
 361         seq_printf(m, "\nSetInfos: %d sent %d failed",
 362                    atomic_read(&sent[SMB2_SET_INFO_HE]),
 363                    atomic_read(&failed[SMB2_SET_INFO_HE]));
 364         seq_printf(m, "\nOplockBreaks: %d sent %d failed",
 365                    atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
 366                    atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
 367 #endif
 368 }
 369
 370 static void
 371 smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
 372 {
 373         struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode);
 374         struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
 375
 376         cfile->fid.persistent_fid = fid->persistent_fid;
 377         cfile->fid.volatile_fid = fid->volatile_fid;
 378         server->ops->set_oplock_level(cinode, oplock, fid->epoch,
 379                                       &fid->purge_cache);
 380         cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
 381 }
 382
 383 static void
 384 smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
 385                 struct cifs_fid *fid)
 386 {
 387         SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 388 }
 389
 390 static int
 391 smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
 392                 struct cifs_fid *fid)
 393 {
 394         return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 395 }
 396
 397 static unsigned int
 398 smb2_read_data_offset(char *buf)
 399 {
 400         struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
 401         return rsp->DataOffset;
 402 }
 403
 404 static unsigned int
 405 smb2_read_data_length(char *buf)
 406 {
 407         struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
 408         return le32_to_cpu(rsp->DataLength);
 409 }
 410
 411
 412 static int
 413 smb2_sync_read(const unsigned int xid, struct cifsFileInfo *cfile,
 414                struct cifs_io_parms *parms, unsigned int *bytes_read,
 415                char **buf, int *buf_type)
 416 {
 417         parms->persistent_fid = cfile->fid.persistent_fid;
 418         parms->volatile_fid = cfile->fid.volatile_fid;
 419         return SMB2_read(xid, parms, bytes_read, buf, buf_type);
 420 }
 421
 422 static int
 423 smb2_sync_write(const unsigned int xid, struct cifsFileInfo *cfile,
 424                 struct cifs_io_parms *parms, unsigned int *written,
 425                 struct kvec *iov, unsigned long nr_segs)
 426 {
 427
 428         parms->persistent_fid = cfile->fid.persistent_fid;
 429         parms->volatile_fid = cfile->fid.volatile_fid;
 430         return SMB2_write(xid, parms, written, iov, nr_segs);
 431 }
 432
 433 static int
 434 smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
 435                    struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
 436 {
 437         __le64 eof = cpu_to_le64(size);
 438         return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
 439                             cfile->fid.volatile_fid, cfile->pid, &eof);
 440 }
 441
 442 static int
 443 smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
 444                      const char *path, struct cifs_sb_info *cifs_sb,
 445                      struct cifs_fid *fid, __u16 search_flags,
 446                      struct cifs_search_info *srch_inf)
 447 {
 448         __le16 *utf16_path;
 449         int rc;
 450         __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 451         struct cifs_open_parms oparms;
 452
 453         utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
 454         if (!utf16_path)
 455                 return -ENOMEM;
 456
 457         oparms.tcon = tcon;
 458         oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
 459         oparms.disposition = FILE_OPEN;
 460         oparms.create_options = 0;
 461         oparms.fid = fid;
 462         oparms.reconnect = false;
 463
 464         rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
 465         kfree(utf16_path);
 466         if (rc) {
 467                 cifs_dbg(VFS, "open dir failed\n");
 468                 return rc;
 469         }
 470
 471         srch_inf->entries_in_buffer = 0;
 472         srch_inf->index_of_last_entry = 0;
 473
 474         rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
 475                                   fid->volatile_fid, 0, srch_inf);
 476         if (rc) {
 477                 cifs_dbg(VFS, "query directory failed\n");
 478                 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 479         }
 480         return rc;
 481 }
 482
 483 static int
 484 smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
 485                     struct cifs_fid *fid, __u16 search_flags,
 486                     struct cifs_search_info *srch_inf)
 487 {
 488         return SMB2_query_directory(xid, tcon, fid->persistent_fid,
 489                                     fid->volatile_fid, 0, srch_inf);
 490 }
 491
 492 static int
 493 smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
 494                struct cifs_fid *fid)
 495 {
 496         return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 497 }
 498
 499 /*
 500 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
 501 * the number of credits and return true. Otherwise - return false.
 502 */
 503 static bool
 504 smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
 505 {
 506         struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
 507
 508         if (hdr->Status != STATUS_PENDING)
 509                 return false;
 510
 511         if (!length) {
 512                 spin_lock(&server->req_lock);
 513                 server->credits += le16_to_cpu(hdr->CreditRequest);
 514                 spin_unlock(&server->req_lock);
 515                 wake_up(&server->request_q);
 516         }
 517
 518         return true;
 519 }
 520
 521 static int
 522 smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
 523                      struct cifsInodeInfo *cinode)
 524 {
 525         if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
 526                 return SMB2_lease_break(0, tcon, cinode->lease_key,
 527                                         smb2_get_lease_state(cinode));
 528
 529         return SMB2_oplock_break(0, tcon, fid->persistent_fid,
 530                                  fid->volatile_fid,
 531                                  CIFS_CACHE_READ(cinode) ? 1 : 0);
 532 }
 533
 534 static int
 535 smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
 536              struct kstatfs *buf)
 537 {
 538         int rc;
 539         __le16 srch_path = 0; /* Null - open root of share */
 540         u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 541         struct cifs_open_parms oparms;
 542         struct cifs_fid fid;
 543
 544         oparms.tcon = tcon;
 545         oparms.desired_access = FILE_READ_ATTRIBUTES;
 546         oparms.disposition = FILE_OPEN;
 547         oparms.create_options = 0;
 548         oparms.fid = &fid;
 549         oparms.reconnect = false;
 550
 551         rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
 552         if (rc)
 553                 return rc;
 554         buf->f_type = SMB2_MAGIC_NUMBER;
 555         rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
 556                            buf);
 557         SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
 558         return rc;
 559 }
 560
 561 static bool
 562 smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
 563 {
 564         return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
 565                ob1->fid.volatile_fid == ob2->fid.volatile_fid;
 566 }
 567
 568 static int
 569 smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
 570                __u64 length, __u32 type, int lock, int unlock, bool wait)
 571 {
 572         if (unlock && !lock)
 573                 type = SMB2_LOCKFLAG_UNLOCK;
 574         return SMB2_lock(xid, tlink_tcon(cfile->tlink),
 575                          cfile->fid.persistent_fid, cfile->fid.volatile_fid,
 576                          current->tgid, length, offset, type, wait);
 577 }
 578
 579 static void
 580 smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
 581 {
 582         memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
 583 }
 584
 585 static void
 586 smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
 587 {
 588         memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
 589 }
 590
 591 static void
 592 smb2_new_lease_key(struct cifs_fid *fid)
 593 {
 594         get_random_bytes(fid->lease_key, SMB2_LEASE_KEY_SIZE);
 595 }
 596
 597 static int
 598 smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
 599                    const char *full_path, char **target_path,
 600                    struct cifs_sb_info *cifs_sb)
 601 {
 602         int rc;
 603         __le16 *utf16_path;
 604         __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 605         struct cifs_open_parms oparms;
 606         struct cifs_fid fid;
 607         struct smb2_err_rsp *err_buf = NULL;
 608         struct smb2_symlink_err_rsp *symlink;
 609         unsigned int sub_len, sub_offset;
 610
 611         cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
 612
 613         utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
 614         if (!utf16_path)
 615                 return -ENOMEM;
 616
 617         oparms.tcon = tcon;
 618         oparms.desired_access = FILE_READ_ATTRIBUTES;
 619         oparms.disposition = FILE_OPEN;
 620         oparms.create_options = 0;
 621         oparms.fid = &fid;
 622         oparms.reconnect = false;
 623
 624         rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_buf);
 625
 626         if (!rc || !err_buf) {
 627                 kfree(utf16_path);
 628                 return -ENOENT;
 629         }
 630         /* open must fail on symlink - reset rc */
 631         rc = 0;
 632         symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
 633         sub_len = le16_to_cpu(symlink->SubstituteNameLength);
 634         sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
 635         *target_path = cifs_strndup_from_utf16(
 636                                 (char *)symlink->PathBuffer + sub_offset,
 637                                 sub_len, true, cifs_sb->local_nls);
 638         if (!(*target_path)) {
 639                 kfree(utf16_path);
 640                 return -ENOMEM;
 641         }
 642         convert_delimiter(*target_path, '/');
 643         cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
 644         kfree(utf16_path);
 645         return rc;
 646 }
 647
 648 static void
 649 smb2_downgrade_oplock(struct TCP_Server_Info *server,
 650                         struct cifsInodeInfo *cinode, bool set_level2)
 651 {
 652         if (set_level2)
 653                 server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
 654                                                 0, NULL);
 655         else
 656                 server->ops->set_oplock_level(cinode, 0, 0, NULL);
 657 }
 658
 659 static void
 660 smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
 661                       unsigned int epoch, bool *purge_cache)
 662 {
 663         oplock &= 0xFF;
 664         if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
 665                 return;
 666         if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
 667                 cinode->oplock = CIFS_CACHE_RHW_FLG;
 668                 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
 669                          &cinode->vfs_inode);
 670         } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
 671                 cinode->oplock = CIFS_CACHE_RW_FLG;
 672                 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
 673                          &cinode->vfs_inode);
 674         } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
 675                 cinode->oplock = CIFS_CACHE_READ_FLG;
 676                 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
 677                          &cinode->vfs_inode);
 678         } else
 679                 cinode->oplock = 0;
 680 }
 681
 682 static void
 683 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
 684                        unsigned int epoch, bool *purge_cache)
 685 {
 686         char message[5] = {0};
 687
 688         oplock &= 0xFF;
 689         if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
 690                 return;
 691
 692         cinode->oplock = 0;
 693         if (oplock & SMB2_LEASE_READ_CACHING_HE) {
 694                 cinode->oplock |= CIFS_CACHE_READ_FLG;
 695                 strcat(message, "R");
 696         }
 697         if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
 698                 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
 699                 strcat(message, "H");
 700         }
 701         if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
 702                 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
 703                 strcat(message, "W");
 704         }
 705         if (!cinode->oplock)
 706                 strcat(message, "None");
 707         cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
 708                  &cinode->vfs_inode);
 709 }
 710
 711 static void
 712 smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
 713                       unsigned int epoch, bool *purge_cache)
 714 {
 715         unsigned int old_oplock = cinode->oplock;
 716
 717         smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
 718
 719         if (purge_cache) {
 720                 *purge_cache = false;
 721                 if (old_oplock == CIFS_CACHE_READ_FLG) {
 722                         if (cinode->oplock == CIFS_CACHE_READ_FLG &&
 723                             (epoch - cinode->epoch > 0))
 724                                 *purge_cache = true;
 725                         else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
 726                                  (epoch - cinode->epoch > 1))
 727                                 *purge_cache = true;
 728                         else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
 729                                  (epoch - cinode->epoch > 1))
 730                                 *purge_cache = true;
 731                         else if (cinode->oplock == 0 &&
 732                                  (epoch - cinode->epoch > 0))
 733                                 *purge_cache = true;
 734                 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
 735                         if (cinode->oplock == CIFS_CACHE_RH_FLG &&
 736                             (epoch - cinode->epoch > 0))
 737                                 *purge_cache = true;
 738                         else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
 739                                  (epoch - cinode->epoch > 1))
 740                                 *purge_cache = true;
 741                 }
 742                 cinode->epoch = epoch;
 743         }
 744 }
 745
 746 static bool
 747 smb2_is_read_op(__u32 oplock)
 748 {
 749         return oplock == SMB2_OPLOCK_LEVEL_II;
 750 }
 751
 752 static bool
 753 smb21_is_read_op(__u32 oplock)
 754 {
 755         return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
 756                !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
 757 }
 758
 759 static __le32
 760 map_oplock_to_lease(u8 oplock)
 761 {
 762         if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
 763                 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
 764         else if (oplock == SMB2_OPLOCK_LEVEL_II)
 765                 return SMB2_LEASE_READ_CACHING;
 766         else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
 767                 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
 768                        SMB2_LEASE_WRITE_CACHING;
 769         return 0;
 770 }
 771
 772 static char *
 773 smb2_create_lease_buf(u8 *lease_key, u8 oplock)
 774 {
 775         struct create_lease *buf;
 776
 777         buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
 778         if (!buf)
 779                 return NULL;
 780
 781         buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
 782         buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
 783         buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
 784
 785         buf->ccontext.DataOffset = cpu_to_le16(offsetof
 786                                         (struct create_lease, lcontext));
 787         buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
 788         buf->ccontext.NameOffset = cpu_to_le16(offsetof
 789                                 (struct create_lease, Name));
 790         buf->ccontext.NameLength = cpu_to_le16(4);
 791         buf->Name[0] = 'R';
 792         buf->Name[1] = 'q';
 793         buf->Name[2] = 'L';
 794         buf->Name[3] = 's';
 795         return (char *)buf;
 796 }
 797
 798 static char *
 799 smb3_create_lease_buf(u8 *lease_key, u8 oplock)
 800 {
 801         struct create_lease_v2 *buf;
 802
 803         buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
 804         if (!buf)
 805                 return NULL;
 806
 807         buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
 808         buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
 809         buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
 810
 811         buf->ccontext.DataOffset = cpu_to_le16(offsetof
 812                                         (struct create_lease_v2, lcontext));
 813         buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
 814         buf->ccontext.NameOffset = cpu_to_le16(offsetof
 815                                 (struct create_lease_v2, Name));
 816         buf->ccontext.NameLength = cpu_to_le16(4);
 817         buf->Name[0] = 'R';
 818         buf->Name[1] = 'q';
 819         buf->Name[2] = 'L';
 820         buf->Name[3] = 's';
 821         return (char *)buf;
 822 }
 823
 824 static __u8
 825 smb2_parse_lease_buf(void *buf, unsigned int *epoch)
 826 {
 827         struct create_lease *lc = (struct create_lease *)buf;
 828
 829         *epoch = 0; /* not used */
 830         if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
 831                 return SMB2_OPLOCK_LEVEL_NOCHANGE;
 832         return le32_to_cpu(lc->lcontext.LeaseState);
 833 }
 834
 835 static __u8
 836 smb3_parse_lease_buf(void *buf, unsigned int *epoch)
 837 {
 838         struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
 839
 840         *epoch = le16_to_cpu(lc->lcontext.Epoch);
 841         if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
 842                 return SMB2_OPLOCK_LEVEL_NOCHANGE;
 843         return le32_to_cpu(lc->lcontext.LeaseState);
 844 }
 845
 846 struct smb_version_operations smb20_operations = {
 847         .compare_fids = smb2_compare_fids,
 848         .setup_request = smb2_setup_request,
 849         .setup_async_request = smb2_setup_async_request,
 850         .check_receive = smb2_check_receive,
 851         .add_credits = smb2_add_credits,
 852         .set_credits = smb2_set_credits,
 853         .get_credits_field = smb2_get_credits_field,
 854         .get_credits = smb2_get_credits,
 855         .get_next_mid = smb2_get_next_mid,
 856         .read_data_offset = smb2_read_data_offset,
 857         .read_data_length = smb2_read_data_length,
 858         .map_error = map_smb2_to_linux_error,
 859         .find_mid = smb2_find_mid,
 860         .check_message = smb2_check_message,
 861         .dump_detail = smb2_dump_detail,
 862         .clear_stats = smb2_clear_stats,
 863         .print_stats = smb2_print_stats,
 864         .is_oplock_break = smb2_is_valid_oplock_break,
 865         .downgrade_oplock = smb2_downgrade_oplock,
 866         .need_neg = smb2_need_neg,
 867         .negotiate = smb2_negotiate,
 868         .negotiate_wsize = smb2_negotiate_wsize,
 869         .negotiate_rsize = smb2_negotiate_rsize,
 870         .sess_setup = SMB2_sess_setup,
 871         .logoff = SMB2_logoff,
 872         .tree_connect = SMB2_tcon,
 873         .tree_disconnect = SMB2_tdis,
 874         .is_path_accessible = smb2_is_path_accessible,
 875         .can_echo = smb2_can_echo,
 876         .echo = SMB2_echo,
 877         .query_path_info = smb2_query_path_info,
 878         .get_srv_inum = smb2_get_srv_inum,
 879         .query_file_info = smb2_query_file_info,
 880         .set_path_size = smb2_set_path_size,
 881         .set_file_size = smb2_set_file_size,
 882         .set_file_info = smb2_set_file_info,
 883         .mkdir = smb2_mkdir,
 884         .mkdir_setinfo = smb2_mkdir_setinfo,
 885         .rmdir = smb2_rmdir,
 886         .unlink = smb2_unlink,
 887         .rename = smb2_rename_path,
 888         .create_hardlink = smb2_create_hardlink,
 889         .query_symlink = smb2_query_symlink,
 890         .open = smb2_open_file,
 891         .set_fid = smb2_set_fid,
 892         .close = smb2_close_file,
 893         .flush = smb2_flush_file,
 894         .async_readv = smb2_async_readv,
 895         .async_writev = smb2_async_writev,
 896         .sync_read = smb2_sync_read,
 897         .sync_write = smb2_sync_write,
 898         .query_dir_first = smb2_query_dir_first,
 899         .query_dir_next = smb2_query_dir_next,
 900         .close_dir = smb2_close_dir,
 901         .calc_smb_size = smb2_calc_size,
 902         .is_status_pending = smb2_is_status_pending,
 903         .oplock_response = smb2_oplock_response,
 904         .queryfs = smb2_queryfs,
 905         .mand_lock = smb2_mand_lock,
 906         .mand_unlock_range = smb2_unlock_range,
 907         .push_mand_locks = smb2_push_mandatory_locks,
 908         .get_lease_key = smb2_get_lease_key,
 909         .set_lease_key = smb2_set_lease_key,
 910         .new_lease_key = smb2_new_lease_key,
 911         .calc_signature = smb2_calc_signature,
 912         .is_read_op = smb2_is_read_op,
 913         .set_oplock_level = smb2_set_oplock_level,
 914         .create_lease_buf = smb2_create_lease_buf,
 915         .parse_lease_buf = smb2_parse_lease_buf,
 916 };
 917
 918 struct smb_version_operations smb21_operations = {
 919         .compare_fids = smb2_compare_fids,
 920         .setup_request = smb2_setup_request,
 921         .setup_async_request = smb2_setup_async_request,
 922         .check_receive = smb2_check_receive,
 923         .add_credits = smb2_add_credits,
 924         .set_credits = smb2_set_credits,
 925         .get_credits_field = smb2_get_credits_field,
 926         .get_credits = smb2_get_credits,
 927         .get_next_mid = smb2_get_next_mid,
 928         .read_data_offset = smb2_read_data_offset,
 929         .read_data_length = smb2_read_data_length,
 930         .map_error = map_smb2_to_linux_error,
 931         .find_mid = smb2_find_mid,
 932         .check_message = smb2_check_message,
 933         .dump_detail = smb2_dump_detail,
 934         .clear_stats = smb2_clear_stats,
 935         .print_stats = smb2_print_stats,
 936         .is_oplock_break = smb2_is_valid_oplock_break,
 937         .downgrade_oplock = smb2_downgrade_oplock,
 938         .need_neg = smb2_need_neg,
 939         .negotiate = smb2_negotiate,
 940         .negotiate_wsize = smb2_negotiate_wsize,
 941         .negotiate_rsize = smb2_negotiate_rsize,
 942         .sess_setup = SMB2_sess_setup,
 943         .logoff = SMB2_logoff,
 944         .tree_connect = SMB2_tcon,
 945         .tree_disconnect = SMB2_tdis,
 946         .is_path_accessible = smb2_is_path_accessible,
 947         .can_echo = smb2_can_echo,
 948         .echo = SMB2_echo,
 949         .query_path_info = smb2_query_path_info,
 950         .get_srv_inum = smb2_get_srv_inum,
 951         .query_file_info = smb2_query_file_info,
 952         .set_path_size = smb2_set_path_size,
 953         .set_file_size = smb2_set_file_size,
 954         .set_file_info = smb2_set_file_info,
 955         .mkdir = smb2_mkdir,
 956         .mkdir_setinfo = smb2_mkdir_setinfo,
 957         .rmdir = smb2_rmdir,
 958         .unlink = smb2_unlink,
 959         .rename = smb2_rename_path,
 960         .create_hardlink = smb2_create_hardlink,
 961         .query_symlink = smb2_query_symlink,
 962         .open = smb2_open_file,
 963         .set_fid = smb2_set_fid,
 964         .close = smb2_close_file,
 965         .flush = smb2_flush_file,
 966         .async_readv = smb2_async_readv,
 967         .async_writev = smb2_async_writev,
 968         .sync_read = smb2_sync_read,
 969         .sync_write = smb2_sync_write,
 970         .query_dir_first = smb2_query_dir_first,
 971         .query_dir_next = smb2_query_dir_next,
 972         .close_dir = smb2_close_dir,
 973         .calc_smb_size = smb2_calc_size,
 974         .is_status_pending = smb2_is_status_pending,
 975         .oplock_response = smb2_oplock_response,
 976         .queryfs = smb2_queryfs,
 977         .mand_lock = smb2_mand_lock,
 978         .mand_unlock_range = smb2_unlock_range,
 979         .push_mand_locks = smb2_push_mandatory_locks,
 980         .get_lease_key = smb2_get_lease_key,
 981         .set_lease_key = smb2_set_lease_key,
 982         .new_lease_key = smb2_new_lease_key,
 983         .calc_signature = smb2_calc_signature,
 984         .is_read_op = smb21_is_read_op,
 985         .set_oplock_level = smb21_set_oplock_level,
 986         .create_lease_buf = smb2_create_lease_buf,
 987         .parse_lease_buf = smb2_parse_lease_buf,
 988 };
 989
 990 struct smb_version_operations smb30_operations = {
 991         .compare_fids = smb2_compare_fids,
 992         .setup_request = smb2_setup_request,
 993         .setup_async_request = smb2_setup_async_request,
 994         .check_receive = smb2_check_receive,
 995         .add_credits = smb2_add_credits,
 996         .set_credits = smb2_set_credits,
 997         .get_credits_field = smb2_get_credits_field,
 998         .get_credits = smb2_get_credits,
 999         .get_next_mid = smb2_get_next_mid,
1000         .read_data_offset = smb2_read_data_offset,
1001         .read_data_length = smb2_read_data_length,
1002         .map_error = map_smb2_to_linux_error,
1003         .find_mid = smb2_find_mid,
1004         .check_message = smb2_check_message,
1005         .dump_detail = smb2_dump_detail,
1006         .clear_stats = smb2_clear_stats,
1007         .print_stats = smb2_print_stats,
1008         .dump_share_caps = smb2_dump_share_caps,
1009         .is_oplock_break = smb2_is_valid_oplock_break,
1010         .downgrade_oplock = smb2_downgrade_oplock,
1011         .need_neg = smb2_need_neg,
1012         .negotiate = smb2_negotiate,
1013         .negotiate_wsize = smb2_negotiate_wsize,
1014         .negotiate_rsize = smb2_negotiate_rsize,
1015         .sess_setup = SMB2_sess_setup,
1016         .logoff = SMB2_logoff,
1017         .tree_connect = SMB2_tcon,
1018         .tree_disconnect = SMB2_tdis,
1019         .is_path_accessible = smb2_is_path_accessible,
1020         .can_echo = smb2_can_echo,
1021         .echo = SMB2_echo,
1022         .query_path_info = smb2_query_path_info,
1023         .get_srv_inum = smb2_get_srv_inum,
1024         .query_file_info = smb2_query_file_info,
1025         .set_path_size = smb2_set_path_size,
1026         .set_file_size = smb2_set_file_size,
1027         .set_file_info = smb2_set_file_info,
1028         .mkdir = smb2_mkdir,
1029         .mkdir_setinfo = smb2_mkdir_setinfo,
1030         .rmdir = smb2_rmdir,
1031         .unlink = smb2_unlink,
1032         .rename = smb2_rename_path,
1033         .create_hardlink = smb2_create_hardlink,
1034         .query_symlink = smb2_query_symlink,
1035         .open = smb2_open_file,
1036         .set_fid = smb2_set_fid,
1037         .close = smb2_close_file,
1038         .flush = smb2_flush_file,
1039         .async_readv = smb2_async_readv,
1040         .async_writev = smb2_async_writev,
1041         .sync_read = smb2_sync_read,
1042         .sync_write = smb2_sync_write,
1043         .query_dir_first = smb2_query_dir_first,
1044         .query_dir_next = smb2_query_dir_next,
1045         .close_dir = smb2_close_dir,
1046         .calc_smb_size = smb2_calc_size,
1047         .is_status_pending = smb2_is_status_pending,
1048         .oplock_response = smb2_oplock_response,
1049         .queryfs = smb2_queryfs,
1050         .mand_lock = smb2_mand_lock,
1051         .mand_unlock_range = smb2_unlock_range,
1052         .push_mand_locks = smb2_push_mandatory_locks,
1053         .get_lease_key = smb2_get_lease_key,
1054         .set_lease_key = smb2_set_lease_key,
1055         .new_lease_key = smb2_new_lease_key,
1056         .generate_signingkey = generate_smb3signingkey,
1057         .calc_signature = smb3_calc_signature,
1058         .is_read_op = smb21_is_read_op,
1059         .set_oplock_level = smb3_set_oplock_level,
1060         .create_lease_buf = smb3_create_lease_buf,
1061         .parse_lease_buf = smb3_parse_lease_buf,
1062         .validate_negotiate = smb3_validate_negotiate,
1063 };
1064
1065 struct smb_version_values smb20_values = {
1066         .version_string = SMB20_VERSION_STRING,
1067         .protocol_id = SMB20_PROT_ID,
1068         .req_capabilities = 0, /* MBZ */
1069         .large_lock_type = 0,
1070         .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1071         .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1072         .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1073         .header_size = sizeof(struct smb2_hdr),
1074         .max_header_size = MAX_SMB2_HDR_SIZE,
1075         .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1076         .lock_cmd = SMB2_LOCK,
1077         .cap_unix = 0,
1078         .cap_nt_find = SMB2_NT_FIND,
1079         .cap_large_files = SMB2_LARGE_FILES,
1080         .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1081         .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1082         .create_lease_size = sizeof(struct create_lease),
1083 };
1084
1085 struct smb_version_values smb21_values = {
1086         .version_string = SMB21_VERSION_STRING,
1087         .protocol_id = SMB21_PROT_ID,
1088         .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
1089         .large_lock_type = 0,
1090         .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1091         .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1092         .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1093         .header_size = sizeof(struct smb2_hdr),
1094         .max_header_size = MAX_SMB2_HDR_SIZE,
1095         .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1096         .lock_cmd = SMB2_LOCK,
1097         .cap_unix = 0,
1098         .cap_nt_find = SMB2_NT_FIND,
1099         .cap_large_files = SMB2_LARGE_FILES,
1100         .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1101         .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1102         .create_lease_size = sizeof(struct create_lease),
1103 };
1104
1105 struct smb_version_values smb30_values = {
1106         .version_string = SMB30_VERSION_STRING,
1107         .protocol_id = SMB30_PROT_ID,
1108         .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU,
1109         .large_lock_type = 0,
1110         .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1111         .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1112         .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1113         .header_size = sizeof(struct smb2_hdr),
1114         .max_header_size = MAX_SMB2_HDR_SIZE,
1115         .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1116         .lock_cmd = SMB2_LOCK,
1117         .cap_unix = 0,
1118         .cap_nt_find = SMB2_NT_FIND,
1119         .cap_large_files = SMB2_LARGE_FILES,
1120         .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1121         .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1122         .create_lease_size = sizeof(struct create_lease_v2),
1123 };
1124
1125 struct smb_version_values smb302_values = {
1126         .version_string = SMB302_VERSION_STRING,
1127         .protocol_id = SMB302_PROT_ID,
1128         .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU,
1129         .large_lock_type = 0,
1130         .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1131         .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1132         .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1133         .header_size = sizeof(struct smb2_hdr),
1134         .max_header_size = MAX_SMB2_HDR_SIZE,
1135         .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1136         .lock_cmd = SMB2_LOCK,
1137         .cap_unix = 0,
1138         .cap_nt_find = SMB2_NT_FIND,
1139         .cap_large_files = SMB2_LARGE_FILES,
1140         .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1141         .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1142         .create_lease_size = sizeof(struct create_lease_v2),
1143 };