linux/fs/cifs/smb1ops.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 *  SMB1 (CIFS) version specific operations
   4 *
   5 *  Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
   6 */
   7
   8#include <linux/pagemap.h>
   9#include <linux/vfs.h>
  10#include "cifsglob.h"
  11#include "cifsproto.h"
  12#include "cifs_debug.h"
  13#include "cifspdu.h"
  14#include "cifs_unicode.h"
  15
  16/*
  17 * An NT cancel request header looks just like the original request except:
  18 *
  19 * The Command is SMB_COM_NT_CANCEL
  20 * The WordCount is zeroed out
  21 * The ByteCount is zeroed out
  22 *
  23 * This function mangles an existing request buffer into a
  24 * SMB_COM_NT_CANCEL request and then sends it.
  25 */
  26static int
  27send_nt_cancel(struct TCP_Server_Info *server, struct smb_rqst *rqst,
  28               struct mid_q_entry *mid)
  29{
  30        int rc = 0;
  31        struct smb_hdr *in_buf = (struct smb_hdr *)rqst->rq_iov[0].iov_base;
  32
  33        /* -4 for RFC1001 length and +2 for BCC field */
  34        in_buf->smb_buf_length = cpu_to_be32(sizeof(struct smb_hdr) - 4  + 2);
  35        in_buf->Command = SMB_COM_NT_CANCEL;
  36        in_buf->WordCount = 0;
  37        put_bcc(0, in_buf);
  38
  39        mutex_lock(&server->srv_mutex);
  40        rc = cifs_sign_smb(in_buf, server, &mid->sequence_number);
  41        if (rc) {
  42                mutex_unlock(&server->srv_mutex);
  43                return rc;
  44        }
  45
  46        /*
  47         * The response to this call was already factored into the sequence
  48         * number when the call went out, so we must adjust it back downward
  49         * after signing here.
  50         */
  51        --server->sequence_number;
  52        rc = smb_send(server, in_buf, be32_to_cpu(in_buf->smb_buf_length));
  53        if (rc < 0)
  54                server->sequence_number--;
  55
  56        mutex_unlock(&server->srv_mutex);
  57
  58        cifs_dbg(FYI, "issued NT_CANCEL for mid %u, rc = %d\n",
  59                 get_mid(in_buf), rc);
  60
  61        return rc;
  62}
  63
  64static bool
  65cifs_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
  66{
  67        return ob1->fid.netfid == ob2->fid.netfid;
  68}
  69
  70static unsigned int
  71cifs_read_data_offset(char *buf)
  72{
  73        READ_RSP *rsp = (READ_RSP *)buf;
  74        return le16_to_cpu(rsp->DataOffset);
  75}
  76
  77static unsigned int
  78cifs_read_data_length(char *buf, bool in_remaining)
  79{
  80        READ_RSP *rsp = (READ_RSP *)buf;
  81        /* It's a bug reading remaining data for SMB1 packets */
  82        WARN_ON(in_remaining);
  83        return (le16_to_cpu(rsp->DataLengthHigh) << 16) +
  84               le16_to_cpu(rsp->DataLength);
  85}
  86
  87static struct mid_q_entry *
  88cifs_find_mid(struct TCP_Server_Info *server, char *buffer)
  89{
  90        struct smb_hdr *buf = (struct smb_hdr *)buffer;
  91        struct mid_q_entry *mid;
  92
  93        spin_lock(&GlobalMid_Lock);
  94        list_for_each_entry(mid, &server->pending_mid_q, qhead) {
  95                if (compare_mid(mid->mid, buf) &&
  96                    mid->mid_state == MID_REQUEST_SUBMITTED &&
  97                    le16_to_cpu(mid->command) == buf->Command) {
  98                        kref_get(&mid->refcount);
  99                        spin_unlock(&GlobalMid_Lock);
 100                        return mid;
 101                }
 102        }
 103        spin_unlock(&GlobalMid_Lock);
 104        return NULL;
 105}
 106
 107static void
 108cifs_add_credits(struct TCP_Server_Info *server,
 109                 const struct cifs_credits *credits, const int optype)
 110{
 111        spin_lock(&server->req_lock);
 112        server->credits += credits->value;
 113        server->in_flight--;
 114        spin_unlock(&server->req_lock);
 115        wake_up(&server->request_q);
 116}
 117
 118static void
 119cifs_set_credits(struct TCP_Server_Info *server, const int val)
 120{
 121        spin_lock(&server->req_lock);
 122        server->credits = val;
 123        server->oplocks = val > 1 ? enable_oplocks : false;
 124        spin_unlock(&server->req_lock);
 125}
 126
 127static int *
 128cifs_get_credits_field(struct TCP_Server_Info *server, const int optype)
 129{
 130        return &server->credits;
 131}
 132
 133static unsigned int
 134cifs_get_credits(struct mid_q_entry *mid)
 135{
 136        return 1;
 137}
 138
 139/*
 140 * Find a free multiplex id (SMB mid). Otherwise there could be
 141 * mid collisions which might cause problems, demultiplexing the
 142 * wrong response to this request. Multiplex ids could collide if
 143 * one of a series requests takes much longer than the others, or
 144 * if a very large number of long lived requests (byte range
 145 * locks or FindNotify requests) are pending. No more than
 146 * 64K-1 requests can be outstanding at one time. If no
 147 * mids are available, return zero. A future optimization
 148 * could make the combination of mids and uid the key we use
 149 * to demultiplex on (rather than mid alone).
 150 * In addition to the above check, the cifs demultiplex
 151 * code already used the command code as a secondary
 152 * check of the frame and if signing is negotiated the
 153 * response would be discarded if the mid were the same
 154 * but the signature was wrong. Since the mid is not put in the
 155 * pending queue until later (when it is about to be dispatched)
 156 * we do have to limit the number of outstanding requests
 157 * to somewhat less than 64K-1 although it is hard to imagine
 158 * so many threads being in the vfs at one time.
 159 */
 160static __u64
 161cifs_get_next_mid(struct TCP_Server_Info *server)
 162{
 163        __u64 mid = 0;
 164        __u16 last_mid, cur_mid;
 165        bool collision;
 166
 167        spin_lock(&GlobalMid_Lock);
 168
 169        /* mid is 16 bit only for CIFS/SMB */
 170        cur_mid = (__u16)((server->CurrentMid) & 0xffff);
 171        /* we do not want to loop forever */
 172        last_mid = cur_mid;
 173        cur_mid++;
 174        /* avoid 0xFFFF MID */
 175        if (cur_mid == 0xffff)
 176                cur_mid++;
 177
 178        /*
 179         * This nested loop looks more expensive than it is.
 180         * In practice the list of pending requests is short,
 181         * fewer than 50, and the mids are likely to be unique
 182         * on the first pass through the loop unless some request
 183         * takes longer than the 64 thousand requests before it
 184         * (and it would also have to have been a request that
 185         * did not time out).
 186         */
 187        while (cur_mid != last_mid) {
 188                struct mid_q_entry *mid_entry;
 189                unsigned int num_mids;
 190
 191                collision = false;
 192                if (cur_mid == 0)
 193                        cur_mid++;
 194
 195                num_mids = 0;
 196                list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) {
 197                        ++num_mids;
 198                        if (mid_entry->mid == cur_mid &&
 199                            mid_entry->mid_state == MID_REQUEST_SUBMITTED) {
 200                                /* This mid is in use, try a different one */
 201                                collision = true;
 202                                break;
 203                        }
 204                }
 205
 206                /*
 207                 * if we have more than 32k mids in the list, then something
 208                 * is very wrong. Possibly a local user is trying to DoS the
 209                 * box by issuing long-running calls and SIGKILL'ing them. If
 210                 * we get to 2^16 mids then we're in big trouble as this
 211                 * function could loop forever.
 212                 *
 213                 * Go ahead and assign out the mid in this situation, but force
 214                 * an eventual reconnect to clean out the pending_mid_q.
 215                 */
 216                if (num_mids > 32768)
 217                        server->tcpStatus = CifsNeedReconnect;
 218
 219                if (!collision) {
 220                        mid = (__u64)cur_mid;
 221                        server->CurrentMid = mid;
 222                        break;
 223                }
 224                cur_mid++;
 225        }
 226        spin_unlock(&GlobalMid_Lock);
 227        return mid;
 228}
 229
 230/*
 231        return codes:
 232                0       not a transact2, or all data present
 233                >0      transact2 with that much data missing
 234                -EINVAL invalid transact2
 235 */
 236static int
 237check2ndT2(char *buf)
 238{
 239        struct smb_hdr *pSMB = (struct smb_hdr *)buf;
 240        struct smb_t2_rsp *pSMBt;
 241        int remaining;
 242        __u16 total_data_size, data_in_this_rsp;
 243
 244        if (pSMB->Command != SMB_COM_TRANSACTION2)
 245                return 0;
 246
 247        /* check for plausible wct, bcc and t2 data and parm sizes */
 248        /* check for parm and data offset going beyond end of smb */
 249        if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */
 250                cifs_dbg(FYI, "Invalid transact2 word count\n");
 251                return -EINVAL;
 252        }
 253
 254        pSMBt = (struct smb_t2_rsp *)pSMB;
 255
 256        total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
 257        data_in_this_rsp = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
 258
 259        if (total_data_size == data_in_this_rsp)
 260                return 0;
 261        else if (total_data_size < data_in_this_rsp) {
 262                cifs_dbg(FYI, "total data %d smaller than data in frame %d\n",
 263                         total_data_size, data_in_this_rsp);
 264                return -EINVAL;
 265        }
 266
 267        remaining = total_data_size - data_in_this_rsp;
 268
 269        cifs_dbg(FYI, "missing %d bytes from transact2, check next response\n",
 270                 remaining);
 271        if (total_data_size > CIFSMaxBufSize) {
 272                cifs_dbg(VFS, "TotalDataSize %d is over maximum buffer %d\n",
 273                         total_data_size, CIFSMaxBufSize);
 274                return -EINVAL;
 275        }
 276        return remaining;
 277}
 278
 279static int
 280coalesce_t2(char *second_buf, struct smb_hdr *target_hdr)
 281{
 282        struct smb_t2_rsp *pSMBs = (struct smb_t2_rsp *)second_buf;
 283        struct smb_t2_rsp *pSMBt  = (struct smb_t2_rsp *)target_hdr;
 284        char *data_area_of_tgt;
 285        char *data_area_of_src;
 286        int remaining;
 287        unsigned int byte_count, total_in_tgt;
 288        __u16 tgt_total_cnt, src_total_cnt, total_in_src;
 289
 290        src_total_cnt = get_unaligned_le16(&pSMBs->t2_rsp.TotalDataCount);
 291        tgt_total_cnt = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
 292
 293        if (tgt_total_cnt != src_total_cnt)
 294                cifs_dbg(FYI, "total data count of primary and secondary t2 differ source=%hu target=%hu\n",
 295                         src_total_cnt, tgt_total_cnt);
 296
 297        total_in_tgt = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
 298
 299        remaining = tgt_total_cnt - total_in_tgt;
 300
 301        if (remaining < 0) {
 302                cifs_dbg(FYI, "Server sent too much data. tgt_total_cnt=%hu total_in_tgt=%u\n",
 303                         tgt_total_cnt, total_in_tgt);
 304                return -EPROTO;
 305        }
 306
 307        if (remaining == 0) {
 308                /* nothing to do, ignore */
 309                cifs_dbg(FYI, "no more data remains\n");
 310                return 0;
 311        }
 312
 313        total_in_src = get_unaligned_le16(&pSMBs->t2_rsp.DataCount);
 314        if (remaining < total_in_src)
 315                cifs_dbg(FYI, "transact2 2nd response contains too much data\n");
 316
 317        /* find end of first SMB data area */
 318        data_area_of_tgt = (char *)&pSMBt->hdr.Protocol +
 319                                get_unaligned_le16(&pSMBt->t2_rsp.DataOffset);
 320
 321        /* validate target area */
 322        data_area_of_src = (char *)&pSMBs->hdr.Protocol +
 323                                get_unaligned_le16(&pSMBs->t2_rsp.DataOffset);
 324
 325        data_area_of_tgt += total_in_tgt;
 326
 327        total_in_tgt += total_in_src;
 328        /* is the result too big for the field? */
 329        if (total_in_tgt > USHRT_MAX) {
 330                cifs_dbg(FYI, "coalesced DataCount too large (%u)\n",
 331                         total_in_tgt);
 332                return -EPROTO;
 333        }
 334        put_unaligned_le16(total_in_tgt, &pSMBt->t2_rsp.DataCount);
 335
 336        /* fix up the BCC */
 337        byte_count = get_bcc(target_hdr);
 338        byte_count += total_in_src;
 339        /* is the result too big for the field? */
 340        if (byte_count > USHRT_MAX) {
 341                cifs_dbg(FYI, "coalesced BCC too large (%u)\n", byte_count);
 342                return -EPROTO;
 343        }
 344        put_bcc(byte_count, target_hdr);
 345
 346        byte_count = be32_to_cpu(target_hdr->smb_buf_length);
 347        byte_count += total_in_src;
 348        /* don't allow buffer to overflow */
 349        if (byte_count > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) {
 350                cifs_dbg(FYI, "coalesced BCC exceeds buffer size (%u)\n",
 351                         byte_count);
 352                return -ENOBUFS;
 353        }
 354        target_hdr->smb_buf_length = cpu_to_be32(byte_count);
 355
 356        /* copy second buffer into end of first buffer */
 357        memcpy(data_area_of_tgt, data_area_of_src, total_in_src);
 358
 359        if (remaining != total_in_src) {
 360                /* more responses to go */
 361                cifs_dbg(FYI, "waiting for more secondary responses\n");
 362                return 1;
 363        }
 364
 365        /* we are done */
 366        cifs_dbg(FYI, "found the last secondary response\n");
 367        return 0;
 368}
 369
 370static void
 371cifs_downgrade_oplock(struct TCP_Server_Info *server,
 372                      struct cifsInodeInfo *cinode, __u32 oplock,
 373                      unsigned int epoch, bool *purge_cache)
 374{
 375        cifs_set_oplock_level(cinode, oplock);
 376}
 377
 378static bool
 379cifs_check_trans2(struct mid_q_entry *mid, struct TCP_Server_Info *server,
 380                  char *buf, int malformed)
 381{
 382        if (malformed)
 383                return false;
 384        if (check2ndT2(buf) <= 0)
 385                return false;
 386        mid->multiRsp = true;
 387        if (mid->resp_buf) {
 388                /* merge response - fix up 1st*/
 389                malformed = coalesce_t2(buf, mid->resp_buf);
 390                if (malformed > 0)
 391                        return true;
 392                /* All parts received or packet is malformed. */
 393                mid->multiEnd = true;
 394                dequeue_mid(mid, malformed);
 395                return true;
 396        }
 397        if (!server->large_buf) {
 398                /*FIXME: switch to already allocated largebuf?*/
 399                cifs_dbg(VFS, "1st trans2 resp needs bigbuf\n");
 400        } else {
 401                /* Have first buffer */
 402                mid->resp_buf = buf;
 403                mid->large_buf = true;
 404                server->bigbuf = NULL;
 405        }
 406        return true;
 407}
 408
 409static bool
 410cifs_need_neg(struct TCP_Server_Info *server)
 411{
 412        return server->maxBuf == 0;
 413}
 414
 415static int
 416cifs_negotiate(const unsigned int xid, struct cifs_ses *ses)
 417{
 418        int rc;
 419        rc = CIFSSMBNegotiate(xid, ses);
 420        if (rc == -EAGAIN) {
 421                /* retry only once on 1st time connection */
 422                set_credits(ses->server, 1);
 423                rc = CIFSSMBNegotiate(xid, ses);
 424                if (rc == -EAGAIN)
 425                        rc = -EHOSTDOWN;
 426        }
 427        return rc;
 428}
 429
 430static unsigned int
 431cifs_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
 432{
 433        __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
 434        struct TCP_Server_Info *server = tcon->ses->server;
 435        unsigned int wsize;
 436
 437        /* start with specified wsize, or default */
 438        if (volume_info->wsize)
 439                wsize = volume_info->wsize;
 440        else if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
 441                wsize = CIFS_DEFAULT_IOSIZE;
 442        else
 443                wsize = CIFS_DEFAULT_NON_POSIX_WSIZE;
 444
 445        /* can server support 24-bit write sizes? (via UNIX extensions) */
 446        if (!tcon->unix_ext || !(unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
 447                wsize = min_t(unsigned int, wsize, CIFS_MAX_RFC1002_WSIZE);
 448
 449        /*
 450         * no CAP_LARGE_WRITE_X or is signing enabled without CAP_UNIX set?
 451         * Limit it to max buffer offered by the server, minus the size of the
 452         * WRITEX header, not including the 4 byte RFC1001 length.
 453         */
 454        if (!(server->capabilities & CAP_LARGE_WRITE_X) ||
 455            (!(server->capabilities & CAP_UNIX) && server->sign))
 456                wsize = min_t(unsigned int, wsize,
 457                                server->maxBuf - sizeof(WRITE_REQ) + 4);
 458
 459        /* hard limit of CIFS_MAX_WSIZE */
 460        wsize = min_t(unsigned int, wsize, CIFS_MAX_WSIZE);
 461
 462        return wsize;
 463}
 464
 465static unsigned int
 466cifs_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
 467{
 468        __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
 469        struct TCP_Server_Info *server = tcon->ses->server;
 470        unsigned int rsize, defsize;
 471
 472        /*
 473         * Set default value...
 474         *
 475         * HACK alert! Ancient servers have very small buffers. Even though
 476         * MS-CIFS indicates that servers are only limited by the client's
 477         * bufsize for reads, testing against win98se shows that it throws
 478         * INVALID_PARAMETER errors if you try to request too large a read.
 479         * OS/2 just sends back short reads.
 480         *
 481         * If the server doesn't advertise CAP_LARGE_READ_X, then assume that
 482         * it can't handle a read request larger than its MaxBufferSize either.
 483         */
 484        if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_READ_CAP))
 485                defsize = CIFS_DEFAULT_IOSIZE;
 486        else if (server->capabilities & CAP_LARGE_READ_X)
 487                defsize = CIFS_DEFAULT_NON_POSIX_RSIZE;
 488        else
 489                defsize = server->maxBuf - sizeof(READ_RSP);
 490
 491        rsize = volume_info->rsize ? volume_info->rsize : defsize;
 492
 493        /*
 494         * no CAP_LARGE_READ_X? Then MS-CIFS states that we must limit this to
 495         * the client's MaxBufferSize.
 496         */
 497        if (!(server->capabilities & CAP_LARGE_READ_X))
 498                rsize = min_t(unsigned int, CIFSMaxBufSize, rsize);
 499
 500        /* hard limit of CIFS_MAX_RSIZE */
 501        rsize = min_t(unsigned int, rsize, CIFS_MAX_RSIZE);
 502
 503        return rsize;
 504}
 505
 506static void
 507cifs_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
 508              struct cifs_sb_info *cifs_sb)
 509{
 510        CIFSSMBQFSDeviceInfo(xid, tcon);
 511        CIFSSMBQFSAttributeInfo(xid, tcon);
 512}
 513
 514static int
 515cifs_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
 516                        struct cifs_sb_info *cifs_sb, const char *full_path)
 517{
 518        int rc;
 519        FILE_ALL_INFO *file_info;
 520
 521        file_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
 522        if (file_info == NULL)
 523                return -ENOMEM;
 524
 525        rc = CIFSSMBQPathInfo(xid, tcon, full_path, file_info,
 526                              0 /* not legacy */, cifs_sb->local_nls,
 527                              cifs_remap(cifs_sb));
 528
 529        if (rc == -EOPNOTSUPP || rc == -EINVAL)
 530                rc = SMBQueryInformation(xid, tcon, full_path, file_info,
 531                                cifs_sb->local_nls, cifs_remap(cifs_sb));
 532        kfree(file_info);
 533        return rc;
 534}
 535
 536static int
 537cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
 538                     struct cifs_sb_info *cifs_sb, const char *full_path,
 539                     FILE_ALL_INFO *data, bool *adjustTZ, bool *symlink)
 540{
 541        int rc;
 542
 543        *symlink = false;
 544
 545        /* could do find first instead but this returns more info */
 546        rc = CIFSSMBQPathInfo(xid, tcon, full_path, data, 0 /* not legacy */,
 547                              cifs_sb->local_nls, cifs_remap(cifs_sb));
 548        /*
 549         * BB optimize code so we do not make the above call when server claims
 550         * no NT SMB support and the above call failed at least once - set flag
 551         * in tcon or mount.
 552         */
 553        if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
 554                rc = SMBQueryInformation(xid, tcon, full_path, data,
 555                                         cifs_sb->local_nls,
 556                                         cifs_remap(cifs_sb));
 557                *adjustTZ = true;
 558        }
 559
 560        if (!rc && (le32_to_cpu(data->Attributes) & ATTR_REPARSE)) {
 561                int tmprc;
 562                int oplock = 0;
 563                struct cifs_fid fid;
 564                struct cifs_open_parms oparms;
 565
 566                oparms.tcon = tcon;
 567                oparms.cifs_sb = cifs_sb;
 568                oparms.desired_access = FILE_READ_ATTRIBUTES;
 569                oparms.create_options = cifs_create_options(cifs_sb, 0);
 570                oparms.disposition = FILE_OPEN;
 571                oparms.path = full_path;
 572                oparms.fid = &fid;
 573                oparms.reconnect = false;
 574
 575                /* Need to check if this is a symbolic link or not */
 576                tmprc = CIFS_open(xid, &oparms, &oplock, NULL);
 577                if (tmprc == -EOPNOTSUPP)
 578                        *symlink = true;
 579                else if (tmprc == 0)
 580                        CIFSSMBClose(xid, tcon, fid.netfid);
 581        }
 582
 583        return rc;
 584}
 585
 586static int
 587cifs_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
 588                  struct cifs_sb_info *cifs_sb, const char *full_path,
 589                  u64 *uniqueid, FILE_ALL_INFO *data)
 590{
 591        /*
 592         * We can not use the IndexNumber field by default from Windows or
 593         * Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA
 594         * CIFS spec claims that this value is unique within the scope of a
 595         * share, and the windows docs hint that it's actually unique
 596         * per-machine.
 597         *
 598         * There may be higher info levels that work but are there Windows
 599         * server or network appliances for which IndexNumber field is not
 600         * guaranteed unique?
 601         */
 602        return CIFSGetSrvInodeNumber(xid, tcon, full_path, uniqueid,
 603                                     cifs_sb->local_nls,
 604                                     cifs_remap(cifs_sb));
 605}
 606
 607static int
 608cifs_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
 609                     struct cifs_fid *fid, FILE_ALL_INFO *data)
 610{
 611        return CIFSSMBQFileInfo(xid, tcon, fid->netfid, data);
 612}
 613
 614static void
 615cifs_clear_stats(struct cifs_tcon *tcon)
 616{
 617        atomic_set(&tcon->stats.cifs_stats.num_writes, 0);
 618        atomic_set(&tcon->stats.cifs_stats.num_reads, 0);
 619        atomic_set(&tcon->stats.cifs_stats.num_flushes, 0);
 620        atomic_set(&tcon->stats.cifs_stats.num_oplock_brks, 0);
 621        atomic_set(&tcon->stats.cifs_stats.num_opens, 0);
 622        atomic_set(&tcon->stats.cifs_stats.num_posixopens, 0);
 623        atomic_set(&tcon->stats.cifs_stats.num_posixmkdirs, 0);
 624        atomic_set(&tcon->stats.cifs_stats.num_closes, 0);
 625        atomic_set(&tcon->stats.cifs_stats.num_deletes, 0);
 626        atomic_set(&tcon->stats.cifs_stats.num_mkdirs, 0);
 627        atomic_set(&tcon->stats.cifs_stats.num_rmdirs, 0);
 628        atomic_set(&tcon->stats.cifs_stats.num_renames, 0);
 629        atomic_set(&tcon->stats.cifs_stats.num_t2renames, 0);
 630        atomic_set(&tcon->stats.cifs_stats.num_ffirst, 0);
 631        atomic_set(&tcon->stats.cifs_stats.num_fnext, 0);
 632        atomic_set(&tcon->stats.cifs_stats.num_fclose, 0);
 633        atomic_set(&tcon->stats.cifs_stats.num_hardlinks, 0);
 634        atomic_set(&tcon->stats.cifs_stats.num_symlinks, 0);
 635        atomic_set(&tcon->stats.cifs_stats.num_locks, 0);
 636        atomic_set(&tcon->stats.cifs_stats.num_acl_get, 0);
 637        atomic_set(&tcon->stats.cifs_stats.num_acl_set, 0);
 638}
 639
 640static void
 641cifs_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
 642{
 643        seq_printf(m, " Oplocks breaks: %d",
 644                   atomic_read(&tcon->stats.cifs_stats.num_oplock_brks));
 645        seq_printf(m, "\nReads:  %d Bytes: %llu",
 646                   atomic_read(&tcon->stats.cifs_stats.num_reads),
 647                   (long long)(tcon->bytes_read));
 648        seq_printf(m, "\nWrites: %d Bytes: %llu",
 649                   atomic_read(&tcon->stats.cifs_stats.num_writes),
 650                   (long long)(tcon->bytes_written));
 651        seq_printf(m, "\nFlushes: %d",
 652                   atomic_read(&tcon->stats.cifs_stats.num_flushes));
 653        seq_printf(m, "\nLocks: %d HardLinks: %d Symlinks: %d",
 654                   atomic_read(&tcon->stats.cifs_stats.num_locks),
 655                   atomic_read(&tcon->stats.cifs_stats.num_hardlinks),
 656                   atomic_read(&tcon->stats.cifs_stats.num_symlinks));
 657        seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
 658                   atomic_read(&tcon->stats.cifs_stats.num_opens),
 659                   atomic_read(&tcon->stats.cifs_stats.num_closes),
 660                   atomic_read(&tcon->stats.cifs_stats.num_deletes));
 661        seq_printf(m, "\nPosix Opens: %d Posix Mkdirs: %d",
 662                   atomic_read(&tcon->stats.cifs_stats.num_posixopens),
 663                   atomic_read(&tcon->stats.cifs_stats.num_posixmkdirs));
 664        seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
 665                   atomic_read(&tcon->stats.cifs_stats.num_mkdirs),
 666                   atomic_read(&tcon->stats.cifs_stats.num_rmdirs));
 667        seq_printf(m, "\nRenames: %d T2 Renames %d",
 668                   atomic_read(&tcon->stats.cifs_stats.num_renames),
 669                   atomic_read(&tcon->stats.cifs_stats.num_t2renames));
 670        seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
 671                   atomic_read(&tcon->stats.cifs_stats.num_ffirst),
 672                   atomic_read(&tcon->stats.cifs_stats.num_fnext),
 673                   atomic_read(&tcon->stats.cifs_stats.num_fclose));
 674}
 675
 676static void
 677cifs_mkdir_setinfo(struct inode *inode, const char *full_path,
 678                   struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
 679                   const unsigned int xid)
 680{
 681        FILE_BASIC_INFO info;
 682        struct cifsInodeInfo *cifsInode;
 683        u32 dosattrs;
 684        int rc;
 685
 686        memset(&info, 0, sizeof(info));
 687        cifsInode = CIFS_I(inode);
 688        dosattrs = cifsInode->cifsAttrs|ATTR_READONLY;
 689        info.Attributes = cpu_to_le32(dosattrs);
 690        rc = CIFSSMBSetPathInfo(xid, tcon, full_path, &info, cifs_sb->local_nls,
 691                                cifs_sb);
 692        if (rc == 0)
 693                cifsInode->cifsAttrs = dosattrs;
 694}
 695
 696static int
 697cifs_open_file(const unsigned int xid, struct cifs_open_parms *oparms,
 698               __u32 *oplock, FILE_ALL_INFO *buf)
 699{
 700        if (!(oparms->tcon->ses->capabilities & CAP_NT_SMBS))
 701                return SMBLegacyOpen(xid, oparms->tcon, oparms->path,
 702                                     oparms->disposition,
 703                                     oparms->desired_access,
 704                                     oparms->create_options,
 705                                     &oparms->fid->netfid, oplock, buf,
 706                                     oparms->cifs_sb->local_nls,
 707                                     cifs_remap(oparms->cifs_sb));
 708        return CIFS_open(xid, oparms, oplock, buf);
 709}
 710
 711static void
 712cifs_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
 713{
 714        struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
 715        cfile->fid.netfid = fid->netfid;
 716        cifs_set_oplock_level(cinode, oplock);
 717        cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
 718}
 719
 720static void
 721cifs_close_file(const unsigned int xid, struct cifs_tcon *tcon,
 722                struct cifs_fid *fid)
 723{
 724        CIFSSMBClose(xid, tcon, fid->netfid);
 725}
 726
 727static int
 728cifs_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
 729                struct cifs_fid *fid)
 730{
 731        return CIFSSMBFlush(xid, tcon, fid->netfid);
 732}
 733
 734static int
 735cifs_sync_read(const unsigned int xid, struct cifs_fid *pfid,
 736               struct cifs_io_parms *parms, unsigned int *bytes_read,
 737               char **buf, int *buf_type)
 738{
 739        parms->netfid = pfid->netfid;
 740        return CIFSSMBRead(xid, parms, bytes_read, buf, buf_type);
 741}
 742
 743static int
 744cifs_sync_write(const unsigned int xid, struct cifs_fid *pfid,
 745                struct cifs_io_parms *parms, unsigned int *written,
 746                struct kvec *iov, unsigned long nr_segs)
 747{
 748
 749        parms->netfid = pfid->netfid;
 750        return CIFSSMBWrite2(xid, parms, written, iov, nr_segs);
 751}
 752
 753static int
 754smb_set_file_info(struct inode *inode, const char *full_path,
 755                  FILE_BASIC_INFO *buf, const unsigned int xid)
 756{
 757        int oplock = 0;
 758        int rc;
 759        __u32 netpid;
 760        struct cifs_fid fid;
 761        struct cifs_open_parms oparms;
 762        struct cifsFileInfo *open_file;
 763        struct cifsInodeInfo *cinode = CIFS_I(inode);
 764        struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
 765        struct tcon_link *tlink = NULL;
 766        struct cifs_tcon *tcon;
 767
 768        /* if the file is already open for write, just use that fileid */
 769        open_file = find_writable_file(cinode, FIND_WR_FSUID_ONLY);
 770        if (open_file) {
 771                fid.netfid = open_file->fid.netfid;
 772                netpid = open_file->pid;
 773                tcon = tlink_tcon(open_file->tlink);
 774                goto set_via_filehandle;
 775        }
 776
 777        tlink = cifs_sb_tlink(cifs_sb);
 778        if (IS_ERR(tlink)) {
 779                rc = PTR_ERR(tlink);
 780                tlink = NULL;
 781                goto out;
 782        }
 783        tcon = tlink_tcon(tlink);
 784
 785        rc = CIFSSMBSetPathInfo(xid, tcon, full_path, buf, cifs_sb->local_nls,
 786                                cifs_sb);
 787        if (rc == 0) {
 788                cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
 789                goto out;
 790        } else if (rc != -EOPNOTSUPP && rc != -EINVAL) {
 791                goto out;
 792        }
 793
 794        oparms.tcon = tcon;
 795        oparms.cifs_sb = cifs_sb;
 796        oparms.desired_access = SYNCHRONIZE | FILE_WRITE_ATTRIBUTES;
 797        oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
 798        oparms.disposition = FILE_OPEN;
 799        oparms.path = full_path;
 800        oparms.fid = &fid;
 801        oparms.reconnect = false;
 802
 803        cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n");
 804        rc = CIFS_open(xid, &oparms, &oplock, NULL);
 805        if (rc != 0) {
 806                if (rc == -EIO)
 807                        rc = -EINVAL;
 808                goto out;
 809        }
 810
 811        netpid = current->tgid;
 812
 813set_via_filehandle:
 814        rc = CIFSSMBSetFileInfo(xid, tcon, buf, fid.netfid, netpid);
 815        if (!rc)
 816                cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
 817
 818        if (open_file == NULL)
 819                CIFSSMBClose(xid, tcon, fid.netfid);
 820        else
 821                cifsFileInfo_put(open_file);
 822out:
 823        if (tlink != NULL)
 824                cifs_put_tlink(tlink);
 825        return rc;
 826}
 827
 828static int
 829cifs_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
 830                   struct cifsFileInfo *cfile)
 831{
 832        return CIFSSMB_set_compression(xid, tcon, cfile->fid.netfid);
 833}
 834
 835static int
 836cifs_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
 837                     const char *path, struct cifs_sb_info *cifs_sb,
 838                     struct cifs_fid *fid, __u16 search_flags,
 839                     struct cifs_search_info *srch_inf)
 840{
 841        int rc;
 842
 843        rc = CIFSFindFirst(xid, tcon, path, cifs_sb,
 844                           &fid->netfid, search_flags, srch_inf, true);
 845        if (rc)
 846                cifs_dbg(FYI, "find first failed=%d\n", rc);
 847        return rc;
 848}
 849
 850static int
 851cifs_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
 852                    struct cifs_fid *fid, __u16 search_flags,
 853                    struct cifs_search_info *srch_inf)
 854{
 855        return CIFSFindNext(xid, tcon, fid->netfid, search_flags, srch_inf);
 856}
 857
 858static int
 859cifs_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
 860               struct cifs_fid *fid)
 861{
 862        return CIFSFindClose(xid, tcon, fid->netfid);
 863}
 864
 865static int
 866cifs_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
 867                     struct cifsInodeInfo *cinode)
 868{
 869        return CIFSSMBLock(0, tcon, fid->netfid, current->tgid, 0, 0, 0, 0,
 870                           LOCKING_ANDX_OPLOCK_RELEASE, false,
 871                           CIFS_CACHE_READ(cinode) ? 1 : 0);
 872}
 873
 874static int
 875cifs_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
 876             struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
 877{
 878        int rc = -EOPNOTSUPP;
 879
 880        buf->f_type = CIFS_MAGIC_NUMBER;
 881
 882        /*
 883         * We could add a second check for a QFS Unix capability bit
 884         */
 885        if ((tcon->ses->capabilities & CAP_UNIX) &&
 886            (CIFS_POSIX_EXTENSIONS & le64_to_cpu(tcon->fsUnixInfo.Capability)))
 887                rc = CIFSSMBQFSPosixInfo(xid, tcon, buf);
 888
 889        /*
 890         * Only need to call the old QFSInfo if failed on newer one,
 891         * e.g. by OS/2.
 892         **/
 893        if (rc && (tcon->ses->capabilities & CAP_NT_SMBS))
 894                rc = CIFSSMBQFSInfo(xid, tcon, buf);
 895
 896        /*
 897         * Some old Windows servers also do not support level 103, retry with
 898         * older level one if old server failed the previous call or we
 899         * bypassed it because we detected that this was an older LANMAN sess
 900         */
 901        if (rc)
 902                rc = SMBOldQFSInfo(xid, tcon, buf);
 903        return rc;
 904}
 905
 906static int
 907cifs_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
 908               __u64 length, __u32 type, int lock, int unlock, bool wait)
 909{
 910        return CIFSSMBLock(xid, tlink_tcon(cfile->tlink), cfile->fid.netfid,
 911                           current->tgid, length, offset, unlock, lock,
 912                           (__u8)type, wait, 0);
 913}
 914
 915static int
 916cifs_unix_dfs_readlink(const unsigned int xid, struct cifs_tcon *tcon,
 917                       const unsigned char *searchName, char **symlinkinfo,
 918                       const struct nls_table *nls_codepage)
 919{
 920#ifdef CONFIG_CIFS_DFS_UPCALL
 921        int rc;
 922        struct dfs_info3_param referral = {0};
 923
 924        rc = get_dfs_path(xid, tcon->ses, searchName, nls_codepage, &referral,
 925                          0);
 926
 927        if (!rc) {
 928                *symlinkinfo = kstrndup(referral.node_name,
 929                                        strlen(referral.node_name),
 930                                        GFP_KERNEL);
 931                free_dfs_info_param(&referral);
 932                if (!*symlinkinfo)
 933                        rc = -ENOMEM;
 934        }
 935        return rc;
 936#else /* No DFS support */
 937        return -EREMOTE;
 938#endif
 939}
 940
 941static int
 942cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
 943                   struct cifs_sb_info *cifs_sb, const char *full_path,
 944                   char **target_path, bool is_reparse_point)
 945{
 946        int rc;
 947        int oplock = 0;
 948        struct cifs_fid fid;
 949        struct cifs_open_parms oparms;
 950
 951        cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
 952
 953        if (is_reparse_point) {
 954                cifs_dbg(VFS, "reparse points not handled for SMB1 symlinks\n");
 955                return -EOPNOTSUPP;
 956        }
 957
 958        /* Check for unix extensions */
 959        if (cap_unix(tcon->ses)) {
 960                rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, target_path,
 961                                             cifs_sb->local_nls,
 962                                             cifs_remap(cifs_sb));
 963                if (rc == -EREMOTE)
 964                        rc = cifs_unix_dfs_readlink(xid, tcon, full_path,
 965                                                    target_path,
 966                                                    cifs_sb->local_nls);
 967
 968                goto out;
 969        }
 970
 971        oparms.tcon = tcon;
 972        oparms.cifs_sb = cifs_sb;
 973        oparms.desired_access = FILE_READ_ATTRIBUTES;
 974        oparms.create_options = cifs_create_options(cifs_sb,
 975                                                    OPEN_REPARSE_POINT);
 976        oparms.disposition = FILE_OPEN;
 977        oparms.path = full_path;
 978        oparms.fid = &fid;
 979        oparms.reconnect = false;
 980
 981        rc = CIFS_open(xid, &oparms, &oplock, NULL);
 982        if (rc)
 983                goto out;
 984
 985        rc = CIFSSMBQuerySymLink(xid, tcon, fid.netfid, target_path,
 986                                 cifs_sb->local_nls);
 987        if (rc)
 988                goto out_close;
 989
 990        convert_delimiter(*target_path, '/');
 991out_close:
 992        CIFSSMBClose(xid, tcon, fid.netfid);
 993out:
 994        if (!rc)
 995                cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
 996        return rc;
 997}
 998
 999static bool
1000cifs_is_read_op(__u32 oplock)
1001{
1002        return oplock == OPLOCK_READ;
1003}
1004
1005static unsigned int
1006cifs_wp_retry_size(struct inode *inode)
1007{
1008        return CIFS_SB(inode->i_sb)->wsize;
1009}
1010
1011static bool
1012cifs_dir_needs_close(struct cifsFileInfo *cfile)
1013{
1014        return !cfile->srch_inf.endOfSearch && !cfile->invalidHandle;
1015}
1016
1017static bool
1018cifs_can_echo(struct TCP_Server_Info *server)
1019{
1020        if (server->tcpStatus == CifsGood)
1021                return true;
1022
1023        return false;
1024}
1025
1026static int
1027cifs_make_node(unsigned int xid, struct inode *inode,
1028               struct dentry *dentry, struct cifs_tcon *tcon,
1029               char *full_path, umode_t mode, dev_t dev)
1030{
1031        struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1032        struct inode *newinode = NULL;
1033        int rc = -EPERM;
1034        FILE_ALL_INFO *buf = NULL;
1035        struct cifs_io_parms io_parms;
1036        __u32 oplock = 0;
1037        struct cifs_fid fid;
1038        struct cifs_open_parms oparms;
1039        unsigned int bytes_written;
1040        struct win_dev *pdev;
1041        struct kvec iov[2];
1042
1043        if (tcon->unix_ext) {
1044                /*
1045                 * SMB1 Unix Extensions: requires server support but
1046                 * works with all special files
1047                 */
1048                struct cifs_unix_set_info_args args = {
1049                        .mode   = mode & ~current_umask(),
1050                        .ctime  = NO_CHANGE_64,
1051                        .atime  = NO_CHANGE_64,
1052                        .mtime  = NO_CHANGE_64,
1053                        .device = dev,
1054                };
1055                if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
1056                        args.uid = current_fsuid();
1057                        args.gid = current_fsgid();
1058                } else {
1059                        args.uid = INVALID_UID; /* no change */
1060                        args.gid = INVALID_GID; /* no change */
1061                }
1062                rc = CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
1063                                            cifs_sb->local_nls,
1064                                            cifs_remap(cifs_sb));
1065                if (rc)
1066                        goto out;
1067
1068                rc = cifs_get_inode_info_unix(&newinode, full_path,
1069                                              inode->i_sb, xid);
1070
1071                if (rc == 0)
1072                        d_instantiate(dentry, newinode);
1073                goto out;
1074        }
1075
1076        /*
1077         * SMB1 SFU emulation: should work with all servers, but only
1078         * support block and char device (no socket & fifo)
1079         */
1080        if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
1081                goto out;
1082
1083        if (!S_ISCHR(mode) && !S_ISBLK(mode))
1084                goto out;
1085
1086        cifs_dbg(FYI, "sfu compat create special file\n");
1087
1088        buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
1089        if (buf == NULL) {
1090                rc = -ENOMEM;
1091                goto out;
1092        }
1093
1094        oparms.tcon = tcon;
1095        oparms.cifs_sb = cifs_sb;
1096        oparms.desired_access = GENERIC_WRITE;
1097        oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR |
1098                                                    CREATE_OPTION_SPECIAL);
1099        oparms.disposition = FILE_CREATE;
1100        oparms.path = full_path;
1101        oparms.fid = &fid;
1102        oparms.reconnect = false;
1103
1104        if (tcon->ses->server->oplocks)
1105                oplock = REQ_OPLOCK;
1106        else
1107                oplock = 0;
1108        rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, buf);
1109        if (rc)
1110                goto out;
1111
1112        /*
1113         * BB Do not bother to decode buf since no local inode yet to put
1114         * timestamps in, but we can reuse it safely.
1115         */
1116
1117        pdev = (struct win_dev *)buf;
1118        io_parms.pid = current->tgid;
1119        io_parms.tcon = tcon;
1120        io_parms.offset = 0;
1121        io_parms.length = sizeof(struct win_dev);
1122        iov[1].iov_base = buf;
1123        iov[1].iov_len = sizeof(struct win_dev);
1124        if (S_ISCHR(mode)) {
1125                memcpy(pdev->type, "IntxCHR", 8);
1126                pdev->major = cpu_to_le64(MAJOR(dev));
1127                pdev->minor = cpu_to_le64(MINOR(dev));
1128                rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
1129                                                        &bytes_written, iov, 1);
1130        } else if (S_ISBLK(mode)) {
1131                memcpy(pdev->type, "IntxBLK", 8);
1132                pdev->major = cpu_to_le64(MAJOR(dev));
1133                pdev->minor = cpu_to_le64(MINOR(dev));
1134                rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
1135                                                        &bytes_written, iov, 1);
1136        }
1137        tcon->ses->server->ops->close(xid, tcon, &fid);
1138        d_drop(dentry);
1139
1140        /* FIXME: add code here to set EAs */
1141out:
1142        kfree(buf);
1143        return rc;
1144}
1145
1146
1147
1148struct smb_version_operations smb1_operations = {
1149        .send_cancel = send_nt_cancel,
1150        .compare_fids = cifs_compare_fids,
1151        .setup_request = cifs_setup_request,
1152        .setup_async_request = cifs_setup_async_request,
1153        .check_receive = cifs_check_receive,
1154        .add_credits = cifs_add_credits,
1155        .set_credits = cifs_set_credits,
1156        .get_credits_field = cifs_get_credits_field,
1157        .get_credits = cifs_get_credits,
1158        .wait_mtu_credits = cifs_wait_mtu_credits,
1159        .get_next_mid = cifs_get_next_mid,
1160        .read_data_offset = cifs_read_data_offset,
1161        .read_data_length = cifs_read_data_length,
1162        .map_error = map_smb_to_linux_error,
1163        .find_mid = cifs_find_mid,
1164        .check_message = checkSMB,
1165        .dump_detail = cifs_dump_detail,
1166        .clear_stats = cifs_clear_stats,
1167        .print_stats = cifs_print_stats,
1168        .is_oplock_break = is_valid_oplock_break,
1169        .downgrade_oplock = cifs_downgrade_oplock,
1170        .check_trans2 = cifs_check_trans2,
1171        .need_neg = cifs_need_neg,
1172        .negotiate = cifs_negotiate,
1173        .negotiate_wsize = cifs_negotiate_wsize,
1174        .negotiate_rsize = cifs_negotiate_rsize,
1175        .sess_setup = CIFS_SessSetup,
1176        .logoff = CIFSSMBLogoff,
1177        .tree_connect = CIFSTCon,
1178        .tree_disconnect = CIFSSMBTDis,
1179        .get_dfs_refer = CIFSGetDFSRefer,
1180        .qfs_tcon = cifs_qfs_tcon,
1181        .is_path_accessible = cifs_is_path_accessible,
1182        .can_echo = cifs_can_echo,
1183        .query_path_info = cifs_query_path_info,
1184        .query_file_info = cifs_query_file_info,
1185        .get_srv_inum = cifs_get_srv_inum,
1186        .set_path_size = CIFSSMBSetEOF,
1187        .set_file_size = CIFSSMBSetFileSize,
1188        .set_file_info = smb_set_file_info,
1189        .set_compression = cifs_set_compression,
1190        .echo = CIFSSMBEcho,
1191        .mkdir = CIFSSMBMkDir,
1192        .mkdir_setinfo = cifs_mkdir_setinfo,
1193        .rmdir = CIFSSMBRmDir,
1194        .unlink = CIFSSMBDelFile,
1195        .rename_pending_delete = cifs_rename_pending_delete,
1196        .rename = CIFSSMBRename,
1197        .create_hardlink = CIFSCreateHardLink,
1198        .query_symlink = cifs_query_symlink,
1199        .open = cifs_open_file,
1200        .set_fid = cifs_set_fid,
1201        .close = cifs_close_file,
1202        .flush = cifs_flush_file,
1203        .async_readv = cifs_async_readv,
1204        .async_writev = cifs_async_writev,
1205        .sync_read = cifs_sync_read,
1206        .sync_write = cifs_sync_write,
1207        .query_dir_first = cifs_query_dir_first,
1208        .query_dir_next = cifs_query_dir_next,
1209        .close_dir = cifs_close_dir,
1210        .calc_smb_size = smbCalcSize,
1211        .oplock_response = cifs_oplock_response,
1212        .queryfs = cifs_queryfs,
1213        .mand_lock = cifs_mand_lock,
1214        .mand_unlock_range = cifs_unlock_range,
1215        .push_mand_locks = cifs_push_mandatory_locks,
1216        .query_mf_symlink = cifs_query_mf_symlink,
1217        .create_mf_symlink = cifs_create_mf_symlink,
1218        .is_read_op = cifs_is_read_op,
1219        .wp_retry_size = cifs_wp_retry_size,
1220        .dir_needs_close = cifs_dir_needs_close,
1221        .select_sectype = cifs_select_sectype,
1222#ifdef CONFIG_CIFS_XATTR
1223        .query_all_EAs = CIFSSMBQAllEAs,
1224        .set_EA = CIFSSMBSetEA,
1225#endif /* CIFS_XATTR */
1226        .get_acl = get_cifs_acl,
1227        .get_acl_by_fid = get_cifs_acl_by_fid,
1228        .set_acl = set_cifs_acl,
1229        .make_node = cifs_make_node,
1230};
1231
1232struct smb_version_values smb1_values = {
1233        .version_string = SMB1_VERSION_STRING,
1234        .protocol_id = SMB10_PROT_ID,
1235        .large_lock_type = LOCKING_ANDX_LARGE_FILES,
1236        .exclusive_lock_type = 0,
1237        .shared_lock_type = LOCKING_ANDX_SHARED_LOCK,
1238        .unlock_lock_type = 0,
1239        .header_preamble_size = 4,
1240        .header_size = sizeof(struct smb_hdr),
1241        .max_header_size = MAX_CIFS_HDR_SIZE,
1242        .read_rsp_size = sizeof(READ_RSP),
1243        .lock_cmd = cpu_to_le16(SMB_COM_LOCKING_ANDX),
1244        .cap_unix = CAP_UNIX,
1245        .cap_nt_find = CAP_NT_SMBS | CAP_NT_FIND,
1246        .cap_large_files = CAP_LARGE_FILES,
1247        .signing_enabled = SECMODE_SIGN_ENABLED,
1248        .signing_required = SECMODE_SIGN_REQUIRED,
1249};
1250