linux/fs/cifs/smb2ops.c
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   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 "smb2status.h"
  28#include "smb2glob.h"
  29
  30static int
  31change_conf(struct TCP_Server_Info *server)
  32{
  33        server->credits += server->echo_credits + server->oplock_credits;
  34        server->oplock_credits = server->echo_credits = 0;
  35        switch (server->credits) {
  36        case 0:
  37                return -1;
  38        case 1:
  39                server->echoes = false;
  40                server->oplocks = false;
  41                cifs_dbg(VFS, "disabling echoes and oplocks\n");
  42                break;
  43        case 2:
  44                server->echoes = true;
  45                server->oplocks = false;
  46                server->echo_credits = 1;
  47                cifs_dbg(FYI, "disabling oplocks\n");
  48                break;
  49        default:
  50                server->echoes = true;
  51                server->oplocks = true;
  52                server->echo_credits = 1;
  53                server->oplock_credits = 1;
  54        }
  55        server->credits -= server->echo_credits + server->oplock_credits;
  56        return 0;
  57}
  58
  59static void
  60smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
  61                 const int optype)
  62{
  63        int *val, rc = 0;
  64        spin_lock(&server->req_lock);
  65        val = server->ops->get_credits_field(server, optype);
  66        *val += add;
  67        server->in_flight--;
  68        if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
  69                rc = change_conf(server);
  70        /*
  71         * Sometimes server returns 0 credits on oplock break ack - we need to
  72         * rebalance credits in this case.
  73         */
  74        else if (server->in_flight > 0 && server->oplock_credits == 0 &&
  75                 server->oplocks) {
  76                if (server->credits > 1) {
  77                        server->credits--;
  78                        server->oplock_credits++;
  79                }
  80        }
  81        spin_unlock(&server->req_lock);
  82        wake_up(&server->request_q);
  83        if (rc)
  84                cifs_reconnect(server);
  85}
  86
  87static void
  88smb2_set_credits(struct TCP_Server_Info *server, const int val)
  89{
  90        spin_lock(&server->req_lock);
  91        server->credits = val;
  92        spin_unlock(&server->req_lock);
  93}
  94
  95static int *
  96smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
  97{
  98        switch (optype) {
  99        case CIFS_ECHO_OP:
 100                return &server->echo_credits;
 101        case CIFS_OBREAK_OP:
 102                return &server->oplock_credits;
 103        default:
 104                return &server->credits;
 105        }
 106}
 107
 108static unsigned int
 109smb2_get_credits(struct mid_q_entry *mid)
 110{
 111        return le16_to_cpu(((struct smb2_hdr *)mid->resp_buf)->CreditRequest);
 112}
 113
 114static __u64
 115smb2_get_next_mid(struct TCP_Server_Info *server)
 116{
 117        __u64 mid;
 118        /* for SMB2 we need the current value */
 119        spin_lock(&GlobalMid_Lock);
 120        mid = server->CurrentMid++;
 121        spin_unlock(&GlobalMid_Lock);
 122        return mid;
 123}
 124
 125static struct mid_q_entry *
 126smb2_find_mid(struct TCP_Server_Info *server, char *buf)
 127{
 128        struct mid_q_entry *mid;
 129        struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
 130
 131        spin_lock(&GlobalMid_Lock);
 132        list_for_each_entry(mid, &server->pending_mid_q, qhead) {
 133                if ((mid->mid == hdr->MessageId) &&
 134                    (mid->mid_state == MID_REQUEST_SUBMITTED) &&
 135                    (mid->command == hdr->Command)) {
 136                        spin_unlock(&GlobalMid_Lock);
 137                        return mid;
 138                }
 139        }
 140        spin_unlock(&GlobalMid_Lock);
 141        return NULL;
 142}
 143
 144static void
 145smb2_dump_detail(void *buf)
 146{
 147#ifdef CONFIG_CIFS_DEBUG2
 148        struct smb2_hdr *smb = (struct smb2_hdr *)buf;
 149
 150        cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
 151                 smb->Command, smb->Status, smb->Flags, smb->MessageId,
 152                 smb->ProcessId);
 153        cifs_dbg(VFS, "smb buf %p len %u\n", smb, smb2_calc_size(smb));
 154#endif
 155}
 156
 157static bool
 158smb2_need_neg(struct TCP_Server_Info *server)
 159{
 160        return server->max_read == 0;
 161}
 162
 163static int
 164smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
 165{
 166        int rc;
 167        ses->server->CurrentMid = 0;
 168        rc = SMB2_negotiate(xid, ses);
 169        /* BB we probably don't need to retry with modern servers */
 170        if (rc == -EAGAIN)
 171                rc = -EHOSTDOWN;
 172        return rc;
 173}
 174
 175static unsigned int
 176smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
 177{
 178        struct TCP_Server_Info *server = tcon->ses->server;
 179        unsigned int wsize;
 180
 181        /* start with specified wsize, or default */
 182        wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
 183        wsize = min_t(unsigned int, wsize, server->max_write);
 184        /*
 185         * limit write size to 2 ** 16, because we don't support multicredit
 186         * requests now.
 187         */
 188        wsize = min_t(unsigned int, wsize, 2 << 15);
 189
 190        return wsize;
 191}
 192
 193static unsigned int
 194smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
 195{
 196        struct TCP_Server_Info *server = tcon->ses->server;
 197        unsigned int rsize;
 198
 199        /* start with specified rsize, or default */
 200        rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
 201        rsize = min_t(unsigned int, rsize, server->max_read);
 202        /*
 203         * limit write size to 2 ** 16, because we don't support multicredit
 204         * requests now.
 205         */
 206        rsize = min_t(unsigned int, rsize, 2 << 15);
 207
 208        return rsize;
 209}
 210
 211static int
 212smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
 213                        struct cifs_sb_info *cifs_sb, const char *full_path)
 214{
 215        int rc;
 216        __le16 *utf16_path;
 217        __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 218        struct cifs_open_parms oparms;
 219        struct cifs_fid fid;
 220
 221        utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
 222        if (!utf16_path)
 223                return -ENOMEM;
 224
 225        oparms.tcon = tcon;
 226        oparms.desired_access = FILE_READ_ATTRIBUTES;
 227        oparms.disposition = FILE_OPEN;
 228        oparms.create_options = 0;
 229        oparms.fid = &fid;
 230        oparms.reconnect = false;
 231
 232        rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL);
 233        if (rc) {
 234                kfree(utf16_path);
 235                return rc;
 236        }
 237
 238        rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
 239        kfree(utf16_path);
 240        return rc;
 241}
 242
 243static int
 244smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
 245                  struct cifs_sb_info *cifs_sb, const char *full_path,
 246                  u64 *uniqueid, FILE_ALL_INFO *data)
 247{
 248        *uniqueid = le64_to_cpu(data->IndexNumber);
 249        return 0;
 250}
 251
 252static int
 253smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
 254                     struct cifs_fid *fid, FILE_ALL_INFO *data)
 255{
 256        int rc;
 257        struct smb2_file_all_info *smb2_data;
 258
 259        smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2,
 260                            GFP_KERNEL);
 261        if (smb2_data == NULL)
 262                return -ENOMEM;
 263
 264        rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
 265                             smb2_data);
 266        if (!rc)
 267                move_smb2_info_to_cifs(data, smb2_data);
 268        kfree(smb2_data);
 269        return rc;
 270}
 271
 272static bool
 273smb2_can_echo(struct TCP_Server_Info *server)
 274{
 275        return server->echoes;
 276}
 277
 278static void
 279smb2_clear_stats(struct cifs_tcon *tcon)
 280{
 281#ifdef CONFIG_CIFS_STATS
 282        int i;
 283        for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
 284                atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
 285                atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
 286        }
 287#endif
 288}
 289
 290static void
 291smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
 292{
 293        seq_puts(m, "\n\tShare Capabilities:");
 294        if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
 295                seq_puts(m, " DFS,");
 296        if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
 297                seq_puts(m, " CONTINUOUS AVAILABILITY,");
 298        if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
 299                seq_puts(m, " SCALEOUT,");
 300        if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
 301                seq_puts(m, " CLUSTER,");
 302        if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
 303                seq_puts(m, " ASYMMETRIC,");
 304        if (tcon->capabilities == 0)
 305                seq_puts(m, " None");
 306        seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
 307}
 308
 309static void
 310smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
 311{
 312#ifdef CONFIG_CIFS_STATS
 313        atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
 314        atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
 315        seq_printf(m, "\nNegotiates: %d sent %d failed",
 316                   atomic_read(&sent[SMB2_NEGOTIATE_HE]),
 317                   atomic_read(&failed[SMB2_NEGOTIATE_HE]));
 318        seq_printf(m, "\nSessionSetups: %d sent %d failed",
 319                   atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
 320                   atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
 321        seq_printf(m, "\nLogoffs: %d sent %d failed",
 322                   atomic_read(&sent[SMB2_LOGOFF_HE]),
 323                   atomic_read(&failed[SMB2_LOGOFF_HE]));
 324        seq_printf(m, "\nTreeConnects: %d sent %d failed",
 325                   atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
 326                   atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
 327        seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
 328                   atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
 329                   atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
 330        seq_printf(m, "\nCreates: %d sent %d failed",
 331                   atomic_read(&sent[SMB2_CREATE_HE]),
 332                   atomic_read(&failed[SMB2_CREATE_HE]));
 333        seq_printf(m, "\nCloses: %d sent %d failed",
 334                   atomic_read(&sent[SMB2_CLOSE_HE]),
 335                   atomic_read(&failed[SMB2_CLOSE_HE]));
 336        seq_printf(m, "\nFlushes: %d sent %d failed",
 337                   atomic_read(&sent[SMB2_FLUSH_HE]),
 338                   atomic_read(&failed[SMB2_FLUSH_HE]));
 339        seq_printf(m, "\nReads: %d sent %d failed",
 340                   atomic_read(&sent[SMB2_READ_HE]),
 341                   atomic_read(&failed[SMB2_READ_HE]));
 342        seq_printf(m, "\nWrites: %d sent %d failed",
 343                   atomic_read(&sent[SMB2_WRITE_HE]),
 344                   atomic_read(&failed[SMB2_WRITE_HE]));
 345        seq_printf(m, "\nLocks: %d sent %d failed",
 346                   atomic_read(&sent[SMB2_LOCK_HE]),
 347                   atomic_read(&failed[SMB2_LOCK_HE]));
 348        seq_printf(m, "\nIOCTLs: %d sent %d failed",
 349                   atomic_read(&sent[SMB2_IOCTL_HE]),
 350                   atomic_read(&failed[SMB2_IOCTL_HE]));
 351        seq_printf(m, "\nCancels: %d sent %d failed",
 352                   atomic_read(&sent[SMB2_CANCEL_HE]),
 353                   atomic_read(&failed[SMB2_CANCEL_HE]));
 354        seq_printf(m, "\nEchos: %d sent %d failed",
 355                   atomic_read(&sent[SMB2_ECHO_HE]),
 356                   atomic_read(&failed[SMB2_ECHO_HE]));
 357        seq_printf(m, "\nQueryDirectories: %d sent %d failed",
 358                   atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
 359                   atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
 360        seq_printf(m, "\nChangeNotifies: %d sent %d failed",
 361                   atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
 362                   atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
 363        seq_printf(m, "\nQueryInfos: %d sent %d failed",
 364                   atomic_read(&sent[SMB2_QUERY_INFO_HE]),
 365                   atomic_read(&failed[SMB2_QUERY_INFO_HE]));
 366        seq_printf(m, "\nSetInfos: %d sent %d failed",
 367                   atomic_read(&sent[SMB2_SET_INFO_HE]),
 368                   atomic_read(&failed[SMB2_SET_INFO_HE]));
 369        seq_printf(m, "\nOplockBreaks: %d sent %d failed",
 370                   atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
 371                   atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
 372#endif
 373}
 374
 375static void
 376smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
 377{
 378        struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode);
 379        cfile->fid.persistent_fid = fid->persistent_fid;
 380        cfile->fid.volatile_fid = fid->volatile_fid;
 381        smb2_set_oplock_level(cinode, oplock);
 382        cinode->can_cache_brlcks = cinode->clientCanCacheAll;
 383}
 384
 385static void
 386smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
 387                struct cifs_fid *fid)
 388{
 389        SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 390}
 391
 392static int
 393smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
 394                struct cifs_fid *fid)
 395{
 396        return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 397}
 398
 399static unsigned int
 400smb2_read_data_offset(char *buf)
 401{
 402        struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
 403        return rsp->DataOffset;
 404}
 405
 406static unsigned int
 407smb2_read_data_length(char *buf)
 408{
 409        struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
 410        return le32_to_cpu(rsp->DataLength);
 411}
 412
 413
 414static int
 415smb2_sync_read(const unsigned int xid, struct cifsFileInfo *cfile,
 416               struct cifs_io_parms *parms, unsigned int *bytes_read,
 417               char **buf, int *buf_type)
 418{
 419        parms->persistent_fid = cfile->fid.persistent_fid;
 420        parms->volatile_fid = cfile->fid.volatile_fid;
 421        return SMB2_read(xid, parms, bytes_read, buf, buf_type);
 422}
 423
 424static int
 425smb2_sync_write(const unsigned int xid, struct cifsFileInfo *cfile,
 426                struct cifs_io_parms *parms, unsigned int *written,
 427                struct kvec *iov, unsigned long nr_segs)
 428{
 429
 430        parms->persistent_fid = cfile->fid.persistent_fid;
 431        parms->volatile_fid = cfile->fid.volatile_fid;
 432        return SMB2_write(xid, parms, written, iov, nr_segs);
 433}
 434
 435static int
 436smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
 437                   struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
 438{
 439        __le64 eof = cpu_to_le64(size);
 440        return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
 441                            cfile->fid.volatile_fid, cfile->pid, &eof);
 442}
 443
 444static int
 445smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
 446                     const char *path, struct cifs_sb_info *cifs_sb,
 447                     struct cifs_fid *fid, __u16 search_flags,
 448                     struct cifs_search_info *srch_inf)
 449{
 450        __le16 *utf16_path;
 451        int rc;
 452        __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 453        struct cifs_open_parms oparms;
 454
 455        utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
 456        if (!utf16_path)
 457                return -ENOMEM;
 458
 459        oparms.tcon = tcon;
 460        oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
 461        oparms.disposition = FILE_OPEN;
 462        oparms.create_options = 0;
 463        oparms.fid = fid;
 464        oparms.reconnect = false;
 465
 466        rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL);
 467        kfree(utf16_path);
 468        if (rc) {
 469                cifs_dbg(VFS, "open dir failed\n");
 470                return rc;
 471        }
 472
 473        srch_inf->entries_in_buffer = 0;
 474        srch_inf->index_of_last_entry = 0;
 475
 476        rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
 477                                  fid->volatile_fid, 0, srch_inf);
 478        if (rc) {
 479                cifs_dbg(VFS, "query directory failed\n");
 480                SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 481        }
 482        return rc;
 483}
 484
 485static int
 486smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
 487                    struct cifs_fid *fid, __u16 search_flags,
 488                    struct cifs_search_info *srch_inf)
 489{
 490        return SMB2_query_directory(xid, tcon, fid->persistent_fid,
 491                                    fid->volatile_fid, 0, srch_inf);
 492}
 493
 494static int
 495smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
 496               struct cifs_fid *fid)
 497{
 498        return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 499}
 500
 501/*
 502* If we negotiate SMB2 protocol and get STATUS_PENDING - update
 503* the number of credits and return true. Otherwise - return false.
 504*/
 505static bool
 506smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
 507{
 508        struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
 509
 510        if (hdr->Status != STATUS_PENDING)
 511                return false;
 512
 513        if (!length) {
 514                spin_lock(&server->req_lock);
 515                server->credits += le16_to_cpu(hdr->CreditRequest);
 516                spin_unlock(&server->req_lock);
 517                wake_up(&server->request_q);
 518        }
 519
 520        return true;
 521}
 522
 523static int
 524smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
 525                     struct cifsInodeInfo *cinode)
 526{
 527        if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
 528                return SMB2_lease_break(0, tcon, cinode->lease_key,
 529                                        smb2_get_lease_state(cinode));
 530
 531        return SMB2_oplock_break(0, tcon, fid->persistent_fid,
 532                                 fid->volatile_fid,
 533                                 cinode->clientCanCacheRead ? 1 : 0);
 534}
 535
 536static int
 537smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
 538             struct kstatfs *buf)
 539{
 540        int rc;
 541        __le16 srch_path = 0; /* Null - open root of share */
 542        u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 543        struct cifs_open_parms oparms;
 544        struct cifs_fid fid;
 545
 546        oparms.tcon = tcon;
 547        oparms.desired_access = FILE_READ_ATTRIBUTES;
 548        oparms.disposition = FILE_OPEN;
 549        oparms.create_options = 0;
 550        oparms.fid = &fid;
 551        oparms.reconnect = false;
 552
 553        rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL);
 554        if (rc)
 555                return rc;
 556        buf->f_type = SMB2_MAGIC_NUMBER;
 557        rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
 558                           buf);
 559        SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
 560        return rc;
 561}
 562
 563static bool
 564smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
 565{
 566        return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
 567               ob1->fid.volatile_fid == ob2->fid.volatile_fid;
 568}
 569
 570static int
 571smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
 572               __u64 length, __u32 type, int lock, int unlock, bool wait)
 573{
 574        if (unlock && !lock)
 575                type = SMB2_LOCKFLAG_UNLOCK;
 576        return SMB2_lock(xid, tlink_tcon(cfile->tlink),
 577                         cfile->fid.persistent_fid, cfile->fid.volatile_fid,
 578                         current->tgid, length, offset, type, wait);
 579}
 580
 581static void
 582smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
 583{
 584        memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
 585}
 586
 587static void
 588smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
 589{
 590        memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
 591}
 592
 593static void
 594smb2_new_lease_key(struct cifs_fid *fid)
 595{
 596        get_random_bytes(fid->lease_key, SMB2_LEASE_KEY_SIZE);
 597}
 598
 599struct smb_version_operations smb21_operations = {
 600        .compare_fids = smb2_compare_fids,
 601        .setup_request = smb2_setup_request,
 602        .setup_async_request = smb2_setup_async_request,
 603        .check_receive = smb2_check_receive,
 604        .add_credits = smb2_add_credits,
 605        .set_credits = smb2_set_credits,
 606        .get_credits_field = smb2_get_credits_field,
 607        .get_credits = smb2_get_credits,
 608        .get_next_mid = smb2_get_next_mid,
 609        .read_data_offset = smb2_read_data_offset,
 610        .read_data_length = smb2_read_data_length,
 611        .map_error = map_smb2_to_linux_error,
 612        .find_mid = smb2_find_mid,
 613        .check_message = smb2_check_message,
 614        .dump_detail = smb2_dump_detail,
 615        .clear_stats = smb2_clear_stats,
 616        .print_stats = smb2_print_stats,
 617        .is_oplock_break = smb2_is_valid_oplock_break,
 618        .need_neg = smb2_need_neg,
 619        .negotiate = smb2_negotiate,
 620        .negotiate_wsize = smb2_negotiate_wsize,
 621        .negotiate_rsize = smb2_negotiate_rsize,
 622        .sess_setup = SMB2_sess_setup,
 623        .logoff = SMB2_logoff,
 624        .tree_connect = SMB2_tcon,
 625        .tree_disconnect = SMB2_tdis,
 626        .is_path_accessible = smb2_is_path_accessible,
 627        .can_echo = smb2_can_echo,
 628        .echo = SMB2_echo,
 629        .query_path_info = smb2_query_path_info,
 630        .get_srv_inum = smb2_get_srv_inum,
 631        .query_file_info = smb2_query_file_info,
 632        .set_path_size = smb2_set_path_size,
 633        .set_file_size = smb2_set_file_size,
 634        .set_file_info = smb2_set_file_info,
 635        .mkdir = smb2_mkdir,
 636        .mkdir_setinfo = smb2_mkdir_setinfo,
 637        .rmdir = smb2_rmdir,
 638        .unlink = smb2_unlink,
 639        .rename = smb2_rename_path,
 640        .create_hardlink = smb2_create_hardlink,
 641        .open = smb2_open_file,
 642        .set_fid = smb2_set_fid,
 643        .close = smb2_close_file,
 644        .flush = smb2_flush_file,
 645        .async_readv = smb2_async_readv,
 646        .async_writev = smb2_async_writev,
 647        .sync_read = smb2_sync_read,
 648        .sync_write = smb2_sync_write,
 649        .query_dir_first = smb2_query_dir_first,
 650        .query_dir_next = smb2_query_dir_next,
 651        .close_dir = smb2_close_dir,
 652        .calc_smb_size = smb2_calc_size,
 653        .is_status_pending = smb2_is_status_pending,
 654        .oplock_response = smb2_oplock_response,
 655        .queryfs = smb2_queryfs,
 656        .mand_lock = smb2_mand_lock,
 657        .mand_unlock_range = smb2_unlock_range,
 658        .push_mand_locks = smb2_push_mandatory_locks,
 659        .get_lease_key = smb2_get_lease_key,
 660        .set_lease_key = smb2_set_lease_key,
 661        .new_lease_key = smb2_new_lease_key,
 662        .calc_signature = smb2_calc_signature,
 663};
 664
 665
 666struct smb_version_operations smb30_operations = {
 667        .compare_fids = smb2_compare_fids,
 668        .setup_request = smb2_setup_request,
 669        .setup_async_request = smb2_setup_async_request,
 670        .check_receive = smb2_check_receive,
 671        .add_credits = smb2_add_credits,
 672        .set_credits = smb2_set_credits,
 673        .get_credits_field = smb2_get_credits_field,
 674        .get_credits = smb2_get_credits,
 675        .get_next_mid = smb2_get_next_mid,
 676        .read_data_offset = smb2_read_data_offset,
 677        .read_data_length = smb2_read_data_length,
 678        .map_error = map_smb2_to_linux_error,
 679        .find_mid = smb2_find_mid,
 680        .check_message = smb2_check_message,
 681        .dump_detail = smb2_dump_detail,
 682        .clear_stats = smb2_clear_stats,
 683        .print_stats = smb2_print_stats,
 684        .dump_share_caps = smb2_dump_share_caps,
 685        .is_oplock_break = smb2_is_valid_oplock_break,
 686        .need_neg = smb2_need_neg,
 687        .negotiate = smb2_negotiate,
 688        .negotiate_wsize = smb2_negotiate_wsize,
 689        .negotiate_rsize = smb2_negotiate_rsize,
 690        .sess_setup = SMB2_sess_setup,
 691        .logoff = SMB2_logoff,
 692        .tree_connect = SMB2_tcon,
 693        .tree_disconnect = SMB2_tdis,
 694        .is_path_accessible = smb2_is_path_accessible,
 695        .can_echo = smb2_can_echo,
 696        .echo = SMB2_echo,
 697        .query_path_info = smb2_query_path_info,
 698        .get_srv_inum = smb2_get_srv_inum,
 699        .query_file_info = smb2_query_file_info,
 700        .set_path_size = smb2_set_path_size,
 701        .set_file_size = smb2_set_file_size,
 702        .set_file_info = smb2_set_file_info,
 703        .mkdir = smb2_mkdir,
 704        .mkdir_setinfo = smb2_mkdir_setinfo,
 705        .rmdir = smb2_rmdir,
 706        .unlink = smb2_unlink,
 707        .rename = smb2_rename_path,
 708        .create_hardlink = smb2_create_hardlink,
 709        .open = smb2_open_file,
 710        .set_fid = smb2_set_fid,
 711        .close = smb2_close_file,
 712        .flush = smb2_flush_file,
 713        .async_readv = smb2_async_readv,
 714        .async_writev = smb2_async_writev,
 715        .sync_read = smb2_sync_read,
 716        .sync_write = smb2_sync_write,
 717        .query_dir_first = smb2_query_dir_first,
 718        .query_dir_next = smb2_query_dir_next,
 719        .close_dir = smb2_close_dir,
 720        .calc_smb_size = smb2_calc_size,
 721        .is_status_pending = smb2_is_status_pending,
 722        .oplock_response = smb2_oplock_response,
 723        .queryfs = smb2_queryfs,
 724        .mand_lock = smb2_mand_lock,
 725        .mand_unlock_range = smb2_unlock_range,
 726        .push_mand_locks = smb2_push_mandatory_locks,
 727        .get_lease_key = smb2_get_lease_key,
 728        .set_lease_key = smb2_set_lease_key,
 729        .new_lease_key = smb2_new_lease_key,
 730        .generate_signingkey = generate_smb3signingkey,
 731        .calc_signature = smb3_calc_signature,
 732};
 733
 734struct smb_version_values smb20_values = {
 735        .version_string = SMB20_VERSION_STRING,
 736        .protocol_id = SMB20_PROT_ID,
 737        .req_capabilities = 0, /* MBZ */
 738        .large_lock_type = 0,
 739        .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
 740        .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
 741        .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
 742        .header_size = sizeof(struct smb2_hdr),
 743        .max_header_size = MAX_SMB2_HDR_SIZE,
 744        .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
 745        .lock_cmd = SMB2_LOCK,
 746        .cap_unix = 0,
 747        .cap_nt_find = SMB2_NT_FIND,
 748        .cap_large_files = SMB2_LARGE_FILES,
 749        .oplock_read = SMB2_OPLOCK_LEVEL_II,
 750        .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
 751        .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
 752};
 753
 754struct smb_version_values smb21_values = {
 755        .version_string = SMB21_VERSION_STRING,
 756        .protocol_id = SMB21_PROT_ID,
 757        .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
 758        .large_lock_type = 0,
 759        .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
 760        .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
 761        .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
 762        .header_size = sizeof(struct smb2_hdr),
 763        .max_header_size = MAX_SMB2_HDR_SIZE,
 764        .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
 765        .lock_cmd = SMB2_LOCK,
 766        .cap_unix = 0,
 767        .cap_nt_find = SMB2_NT_FIND,
 768        .cap_large_files = SMB2_LARGE_FILES,
 769        .oplock_read = SMB2_OPLOCK_LEVEL_II,
 770        .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
 771        .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
 772};
 773
 774struct smb_version_values smb30_values = {
 775        .version_string = SMB30_VERSION_STRING,
 776        .protocol_id = SMB30_PROT_ID,
 777        .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU,
 778        .large_lock_type = 0,
 779        .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
 780        .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
 781        .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
 782        .header_size = sizeof(struct smb2_hdr),
 783        .max_header_size = MAX_SMB2_HDR_SIZE,
 784        .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
 785        .lock_cmd = SMB2_LOCK,
 786        .cap_unix = 0,
 787        .cap_nt_find = SMB2_NT_FIND,
 788        .cap_large_files = SMB2_LARGE_FILES,
 789        .oplock_read = SMB2_OPLOCK_LEVEL_II,
 790        .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
 791        .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
 792};
 793
 794struct smb_version_values smb302_values = {
 795        .version_string = SMB302_VERSION_STRING,
 796        .protocol_id = SMB302_PROT_ID,
 797        .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU,
 798        .large_lock_type = 0,
 799        .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
 800        .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
 801        .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
 802        .header_size = sizeof(struct smb2_hdr),
 803        .max_header_size = MAX_SMB2_HDR_SIZE,
 804        .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
 805        .lock_cmd = SMB2_LOCK,
 806        .cap_unix = 0,
 807        .cap_nt_find = SMB2_NT_FIND,
 808        .cap_large_files = SMB2_LARGE_FILES,
 809        .oplock_read = SMB2_OPLOCK_LEVEL_II,
 810        .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
 811        .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
 812};
 813
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