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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 <uapi/linux/magic.h>
 11 #include "cifsglob.h"
 12 #include "cifsproto.h"
 13 #include "cifs_debug.h"
 14 #include "cifspdu.h"
 15 #include "cifs_unicode.h"
 16 #include "fs_context.h"
 17 
 18 /*
 19  * An NT cancel request header looks just like the original request except:
 20  *
 21  * The Command is SMB_COM_NT_CANCEL
 22  * The WordCount is zeroed out
 23  * The ByteCount is zeroed out
 24  *
 25  * This function mangles an existing request buffer into a
 26  * SMB_COM_NT_CANCEL request and then sends it.
 27  */
 28 static int
 29 send_nt_cancel(struct TCP_Server_Info *server, struct smb_rqst *rqst,
 30                struct mid_q_entry *mid)
 31 {
 32         int rc = 0;
 33         struct smb_hdr *in_buf = (struct smb_hdr *)rqst->rq_iov[0].iov_base;
 34 
 35         /* -4 for RFC1001 length and +2 for BCC field */
 36         in_buf->smb_buf_length = cpu_to_be32(sizeof(struct smb_hdr) - 4  + 2);
 37         in_buf->Command = SMB_COM_NT_CANCEL;
 38         in_buf->WordCount = 0;
 39         put_bcc(0, in_buf);
 40 
 41         mutex_lock(&server->srv_mutex);
 42         rc = cifs_sign_smb(in_buf, server, &mid->sequence_number);
 43         if (rc) {
 44                 mutex_unlock(&server->srv_mutex);
 45                 return rc;
 46         }
 47 
 48         /*
 49          * The response to this call was already factored into the sequence
 50          * number when the call went out, so we must adjust it back downward
 51          * after signing here.
 52          */
 53         --server->sequence_number;
 54         rc = smb_send(server, in_buf, be32_to_cpu(in_buf->smb_buf_length));
 55         if (rc < 0)
 56                 server->sequence_number--;
 57 
 58         mutex_unlock(&server->srv_mutex);
 59 
 60         cifs_dbg(FYI, "issued NT_CANCEL for mid %u, rc = %d\n",
 61                  get_mid(in_buf), rc);
 62 
 63         return rc;
 64 }
 65 
 66 static bool
 67 cifs_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
 68 {
 69         return ob1->fid.netfid == ob2->fid.netfid;
 70 }
 71 
 72 static unsigned int
 73 cifs_read_data_offset(char *buf)
 74 {
 75         READ_RSP *rsp = (READ_RSP *)buf;
 76         return le16_to_cpu(rsp->DataOffset);
 77 }
 78 
 79 static unsigned int
 80 cifs_read_data_length(char *buf, bool in_remaining)
 81 {
 82         READ_RSP *rsp = (READ_RSP *)buf;
 83         /* It's a bug reading remaining data for SMB1 packets */
 84         WARN_ON(in_remaining);
 85         return (le16_to_cpu(rsp->DataLengthHigh) << 16) +
 86                le16_to_cpu(rsp->DataLength);
 87 }
 88 
 89 static struct mid_q_entry *
 90 cifs_find_mid(struct TCP_Server_Info *server, char *buffer)
 91 {
 92         struct smb_hdr *buf = (struct smb_hdr *)buffer;
 93         struct mid_q_entry *mid;
 94 
 95         spin_lock(&GlobalMid_Lock);
 96         list_for_each_entry(mid, &server->pending_mid_q, qhead) {
 97                 if (compare_mid(mid->mid, buf) &&
 98                     mid->mid_state == MID_REQUEST_SUBMITTED &&
 99                     le16_to_cpu(mid->command) == buf->Command) {
100                         kref_get(&mid->refcount);
101                         spin_unlock(&GlobalMid_Lock);
102                         return mid;
103                 }
104         }
105         spin_unlock(&GlobalMid_Lock);
106         return NULL;
107 }
108 
109 static void
110 cifs_add_credits(struct TCP_Server_Info *server,
111                  const struct cifs_credits *credits, const int optype)
112 {
113         spin_lock(&server->req_lock);
114         server->credits += credits->value;
115         server->in_flight--;
116         spin_unlock(&server->req_lock);
117         wake_up(&server->request_q);
118 }
119 
120 static void
121 cifs_set_credits(struct TCP_Server_Info *server, const int val)
122 {
123         spin_lock(&server->req_lock);
124         server->credits = val;
125         server->oplocks = val > 1 ? enable_oplocks : false;
126         spin_unlock(&server->req_lock);
127 }
128 
129 static int *
130 cifs_get_credits_field(struct TCP_Server_Info *server, const int optype)
131 {
132         return &server->credits;
133 }
134 
135 static unsigned int
136 cifs_get_credits(struct mid_q_entry *mid)
137 {
138         return 1;
139 }
140 
141 /*
142  * Find a free multiplex id (SMB mid). Otherwise there could be
143  * mid collisions which might cause problems, demultiplexing the
144  * wrong response to this request. Multiplex ids could collide if
145  * one of a series requests takes much longer than the others, or
146  * if a very large number of long lived requests (byte range
147  * locks or FindNotify requests) are pending. No more than
148  * 64K-1 requests can be outstanding at one time. If no
149  * mids are available, return zero. A future optimization
150  * could make the combination of mids and uid the key we use
151  * to demultiplex on (rather than mid alone).
152  * In addition to the above check, the cifs demultiplex
153  * code already used the command code as a secondary
154  * check of the frame and if signing is negotiated the
155  * response would be discarded if the mid were the same
156  * but the signature was wrong. Since the mid is not put in the
157  * pending queue until later (when it is about to be dispatched)
158  * we do have to limit the number of outstanding requests
159  * to somewhat less than 64K-1 although it is hard to imagine
160  * so many threads being in the vfs at one time.
161  */
162 static __u64
163 cifs_get_next_mid(struct TCP_Server_Info *server)
164 {
165         __u64 mid = 0;
166         __u16 last_mid, cur_mid;
167         bool collision, reconnect = false;
168 
169         spin_lock(&GlobalMid_Lock);
170 
171         /* mid is 16 bit only for CIFS/SMB */
172         cur_mid = (__u16)((server->CurrentMid) & 0xffff);
173         /* we do not want to loop forever */
174         last_mid = cur_mid;
175         cur_mid++;
176         /* avoid 0xFFFF MID */
177         if (cur_mid == 0xffff)
178                 cur_mid++;
179 
180         /*
181          * This nested loop looks more expensive than it is.
182          * In practice the list of pending requests is short,
183          * fewer than 50, and the mids are likely to be unique
184          * on the first pass through the loop unless some request
185          * takes longer than the 64 thousand requests before it
186          * (and it would also have to have been a request that
187          * did not time out).
188          */
189         while (cur_mid != last_mid) {
190                 struct mid_q_entry *mid_entry;
191                 unsigned int num_mids;
192 
193                 collision = false;
194                 if (cur_mid == 0)
195                         cur_mid++;
196 
197                 num_mids = 0;
198                 list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) {
199                         ++num_mids;
200                         if (mid_entry->mid == cur_mid &&
201                             mid_entry->mid_state == MID_REQUEST_SUBMITTED) {
202                                 /* This mid is in use, try a different one */
203                                 collision = true;
204                                 break;
205                         }
206                 }
207 
208                 /*
209                  * if we have more than 32k mids in the list, then something
210                  * is very wrong. Possibly a local user is trying to DoS the
211                  * box by issuing long-running calls and SIGKILL'ing them. If
212                  * we get to 2^16 mids then we're in big trouble as this
213                  * function could loop forever.
214                  *
215                  * Go ahead and assign out the mid in this situation, but force
216                  * an eventual reconnect to clean out the pending_mid_q.
217                  */
218                 if (num_mids > 32768)
219                         reconnect = true;
220 
221                 if (!collision) {
222                         mid = (__u64)cur_mid;
223                         server->CurrentMid = mid;
224                         break;
225                 }
226                 cur_mid++;
227         }
228         spin_unlock(&GlobalMid_Lock);
229 
230         if (reconnect) {
231                 spin_lock(&cifs_tcp_ses_lock);
232                 server->tcpStatus = CifsNeedReconnect;
233                 spin_unlock(&cifs_tcp_ses_lock);
234         }
235 
236         return mid;
237 }
238 
239 /*
240         return codes:
241                 0       not a transact2, or all data present
242                 >0      transact2 with that much data missing
243                 -EINVAL invalid transact2
244  */
245 static int
246 check2ndT2(char *buf)
247 {
248         struct smb_hdr *pSMB = (struct smb_hdr *)buf;
249         struct smb_t2_rsp *pSMBt;
250         int remaining;
251         __u16 total_data_size, data_in_this_rsp;
252 
253         if (pSMB->Command != SMB_COM_TRANSACTION2)
254                 return 0;
255 
256         /* check for plausible wct, bcc and t2 data and parm sizes */
257         /* check for parm and data offset going beyond end of smb */
258         if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */
259                 cifs_dbg(FYI, "Invalid transact2 word count\n");
260                 return -EINVAL;
261         }
262 
263         pSMBt = (struct smb_t2_rsp *)pSMB;
264 
265         total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
266         data_in_this_rsp = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
267 
268         if (total_data_size == data_in_this_rsp)
269                 return 0;
270         else if (total_data_size < data_in_this_rsp) {
271                 cifs_dbg(FYI, "total data %d smaller than data in frame %d\n",
272                          total_data_size, data_in_this_rsp);
273                 return -EINVAL;
274         }
275 
276         remaining = total_data_size - data_in_this_rsp;
277 
278         cifs_dbg(FYI, "missing %d bytes from transact2, check next response\n",
279                  remaining);
280         if (total_data_size > CIFSMaxBufSize) {
281                 cifs_dbg(VFS, "TotalDataSize %d is over maximum buffer %d\n",
282                          total_data_size, CIFSMaxBufSize);
283                 return -EINVAL;
284         }
285         return remaining;
286 }
287 
288 static int
289 coalesce_t2(char *second_buf, struct smb_hdr *target_hdr)
290 {
291         struct smb_t2_rsp *pSMBs = (struct smb_t2_rsp *)second_buf;
292         struct smb_t2_rsp *pSMBt  = (struct smb_t2_rsp *)target_hdr;
293         char *data_area_of_tgt;
294         char *data_area_of_src;
295         int remaining;
296         unsigned int byte_count, total_in_tgt;
297         __u16 tgt_total_cnt, src_total_cnt, total_in_src;
298 
299         src_total_cnt = get_unaligned_le16(&pSMBs->t2_rsp.TotalDataCount);
300         tgt_total_cnt = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
301 
302         if (tgt_total_cnt != src_total_cnt)
303                 cifs_dbg(FYI, "total data count of primary and secondary t2 differ source=%hu target=%hu\n",
304                          src_total_cnt, tgt_total_cnt);
305 
306         total_in_tgt = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
307 
308         remaining = tgt_total_cnt - total_in_tgt;
309 
310         if (remaining < 0) {
311                 cifs_dbg(FYI, "Server sent too much data. tgt_total_cnt=%hu total_in_tgt=%u\n",
312                          tgt_total_cnt, total_in_tgt);
313                 return -EPROTO;
314         }
315 
316         if (remaining == 0) {
317                 /* nothing to do, ignore */
318                 cifs_dbg(FYI, "no more data remains\n");
319                 return 0;
320         }
321 
322         total_in_src = get_unaligned_le16(&pSMBs->t2_rsp.DataCount);
323         if (remaining < total_in_src)
324                 cifs_dbg(FYI, "transact2 2nd response contains too much data\n");
325 
326         /* find end of first SMB data area */
327         data_area_of_tgt = (char *)&pSMBt->hdr.Protocol +
328                                 get_unaligned_le16(&pSMBt->t2_rsp.DataOffset);
329 
330         /* validate target area */
331         data_area_of_src = (char *)&pSMBs->hdr.Protocol +
332                                 get_unaligned_le16(&pSMBs->t2_rsp.DataOffset);
333 
334         data_area_of_tgt += total_in_tgt;
335 
336         total_in_tgt += total_in_src;
337         /* is the result too big for the field? */
338         if (total_in_tgt > USHRT_MAX) {
339                 cifs_dbg(FYI, "coalesced DataCount too large (%u)\n",
340                          total_in_tgt);
341                 return -EPROTO;
342         }
343         put_unaligned_le16(total_in_tgt, &pSMBt->t2_rsp.DataCount);
344 
345         /* fix up the BCC */
346         byte_count = get_bcc(target_hdr);
347         byte_count += total_in_src;
348         /* is the result too big for the field? */
349         if (byte_count > USHRT_MAX) {
350                 cifs_dbg(FYI, "coalesced BCC too large (%u)\n", byte_count);
351                 return -EPROTO;
352         }
353         put_bcc(byte_count, target_hdr);
354 
355         byte_count = be32_to_cpu(target_hdr->smb_buf_length);
356         byte_count += total_in_src;
357         /* don't allow buffer to overflow */
358         if (byte_count > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) {
359                 cifs_dbg(FYI, "coalesced BCC exceeds buffer size (%u)\n",
360                          byte_count);
361                 return -ENOBUFS;
362         }
363         target_hdr->smb_buf_length = cpu_to_be32(byte_count);
364 
365         /* copy second buffer into end of first buffer */
366         memcpy(data_area_of_tgt, data_area_of_src, total_in_src);
367 
368         if (remaining != total_in_src) {
369                 /* more responses to go */
370                 cifs_dbg(FYI, "waiting for more secondary responses\n");
371                 return 1;
372         }
373 
374         /* we are done */
375         cifs_dbg(FYI, "found the last secondary response\n");
376         return 0;
377 }
378 
379 static void
380 cifs_downgrade_oplock(struct TCP_Server_Info *server,
381                       struct cifsInodeInfo *cinode, __u32 oplock,
382                       unsigned int epoch, bool *purge_cache)
383 {
384         cifs_set_oplock_level(cinode, oplock);
385 }
386 
387 static bool
388 cifs_check_trans2(struct mid_q_entry *mid, struct TCP_Server_Info *server,
389                   char *buf, int malformed)
390 {
391         if (malformed)
392                 return false;
393         if (check2ndT2(buf) <= 0)
394                 return false;
395         mid->multiRsp = true;
396         if (mid->resp_buf) {
397                 /* merge response - fix up 1st*/
398                 malformed = coalesce_t2(buf, mid->resp_buf);
399                 if (malformed > 0)
400                         return true;
401                 /* All parts received or packet is malformed. */
402                 mid->multiEnd = true;
403                 dequeue_mid(mid, malformed);
404                 return true;
405         }
406         if (!server->large_buf) {
407                 /*FIXME: switch to already allocated largebuf?*/
408                 cifs_dbg(VFS, "1st trans2 resp needs bigbuf\n");
409         } else {
410                 /* Have first buffer */
411                 mid->resp_buf = buf;
412                 mid->large_buf = true;
413                 server->bigbuf = NULL;
414         }
415         return true;
416 }
417 
418 static bool
419 cifs_need_neg(struct TCP_Server_Info *server)
420 {
421         return server->maxBuf == 0;
422 }
423 
424 static int
425 cifs_negotiate(const unsigned int xid,
426                struct cifs_ses *ses,
427                struct TCP_Server_Info *server)
428 {
429         int rc;
430         rc = CIFSSMBNegotiate(xid, ses, server);
431         if (rc == -EAGAIN) {
432                 /* retry only once on 1st time connection */
433                 set_credits(server, 1);
434                 rc = CIFSSMBNegotiate(xid, ses, server);
435                 if (rc == -EAGAIN)
436                         rc = -EHOSTDOWN;
437         }
438         return rc;
439 }
440 
441 static unsigned int
442 cifs_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
443 {
444         __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
445         struct TCP_Server_Info *server = tcon->ses->server;
446         unsigned int wsize;
447 
448         /* start with specified wsize, or default */
449         if (ctx->wsize)
450                 wsize = ctx->wsize;
451         else if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
452                 wsize = CIFS_DEFAULT_IOSIZE;
453         else
454                 wsize = CIFS_DEFAULT_NON_POSIX_WSIZE;
455 
456         /* can server support 24-bit write sizes? (via UNIX extensions) */
457         if (!tcon->unix_ext || !(unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
458                 wsize = min_t(unsigned int, wsize, CIFS_MAX_RFC1002_WSIZE);
459 
460         /*
461          * no CAP_LARGE_WRITE_X or is signing enabled without CAP_UNIX set?
462          * Limit it to max buffer offered by the server, minus the size of the
463          * WRITEX header, not including the 4 byte RFC1001 length.
464          */
465         if (!(server->capabilities & CAP_LARGE_WRITE_X) ||
466             (!(server->capabilities & CAP_UNIX) && server->sign))
467                 wsize = min_t(unsigned int, wsize,
468                                 server->maxBuf - sizeof(WRITE_REQ) + 4);
469 
470         /* hard limit of CIFS_MAX_WSIZE */
471         wsize = min_t(unsigned int, wsize, CIFS_MAX_WSIZE);
472 
473         return wsize;
474 }
475 
476 static unsigned int
477 cifs_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
478 {
479         __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
480         struct TCP_Server_Info *server = tcon->ses->server;
481         unsigned int rsize, defsize;
482 
483         /*
484          * Set default value...
485          *
486          * HACK alert! Ancient servers have very small buffers. Even though
487          * MS-CIFS indicates that servers are only limited by the client's
488          * bufsize for reads, testing against win98se shows that it throws
489          * INVALID_PARAMETER errors if you try to request too large a read.
490          * OS/2 just sends back short reads.
491          *
492          * If the server doesn't advertise CAP_LARGE_READ_X, then assume that
493          * it can't handle a read request larger than its MaxBufferSize either.
494          */
495         if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_READ_CAP))
496                 defsize = CIFS_DEFAULT_IOSIZE;
497         else if (server->capabilities & CAP_LARGE_READ_X)
498                 defsize = CIFS_DEFAULT_NON_POSIX_RSIZE;
499         else
500                 defsize = server->maxBuf - sizeof(READ_RSP);
501 
502         rsize = ctx->rsize ? ctx->rsize : defsize;
503 
504         /*
505          * no CAP_LARGE_READ_X? Then MS-CIFS states that we must limit this to
506          * the client's MaxBufferSize.
507          */
508         if (!(server->capabilities & CAP_LARGE_READ_X))
509                 rsize = min_t(unsigned int, CIFSMaxBufSize, rsize);
510 
511         /* hard limit of CIFS_MAX_RSIZE */
512         rsize = min_t(unsigned int, rsize, CIFS_MAX_RSIZE);
513 
514         return rsize;
515 }
516 
517 static void
518 cifs_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
519               struct cifs_sb_info *cifs_sb)
520 {
521         CIFSSMBQFSDeviceInfo(xid, tcon);
522         CIFSSMBQFSAttributeInfo(xid, tcon);
523 }
524 
525 static int
526 cifs_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
527                         struct cifs_sb_info *cifs_sb, const char *full_path)
528 {
529         int rc;
530         FILE_ALL_INFO *file_info;
531 
532         file_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
533         if (file_info == NULL)
534                 return -ENOMEM;
535 
536         rc = CIFSSMBQPathInfo(xid, tcon, full_path, file_info,
537                               0 /* not legacy */, cifs_sb->local_nls,
538                               cifs_remap(cifs_sb));
539 
540         if (rc == -EOPNOTSUPP || rc == -EINVAL)
541                 rc = SMBQueryInformation(xid, tcon, full_path, file_info,
542                                 cifs_sb->local_nls, cifs_remap(cifs_sb));
543         kfree(file_info);
544         return rc;
545 }
546 
547 static int
548 cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
549                      struct cifs_sb_info *cifs_sb, const char *full_path,
550                      FILE_ALL_INFO *data, bool *adjustTZ, bool *symlink)
551 {
552         int rc;
553 
554         *symlink = false;
555 
556         /* could do find first instead but this returns more info */
557         rc = CIFSSMBQPathInfo(xid, tcon, full_path, data, 0 /* not legacy */,
558                               cifs_sb->local_nls, cifs_remap(cifs_sb));
559         /*
560          * BB optimize code so we do not make the above call when server claims
561          * no NT SMB support and the above call failed at least once - set flag
562          * in tcon or mount.
563          */
564         if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
565                 rc = SMBQueryInformation(xid, tcon, full_path, data,
566                                          cifs_sb->local_nls,
567                                          cifs_remap(cifs_sb));
568                 *adjustTZ = true;
569         }
570 
571         if (!rc && (le32_to_cpu(data->Attributes) & ATTR_REPARSE)) {
572                 int tmprc;
573                 int oplock = 0;
574                 struct cifs_fid fid;
575                 struct cifs_open_parms oparms;
576 
577                 oparms.tcon = tcon;
578                 oparms.cifs_sb = cifs_sb;
579                 oparms.desired_access = FILE_READ_ATTRIBUTES;
580                 oparms.create_options = cifs_create_options(cifs_sb, 0);
581                 oparms.disposition = FILE_OPEN;
582                 oparms.path = full_path;
583                 oparms.fid = &fid;
584                 oparms.reconnect = false;
585 
586                 /* Need to check if this is a symbolic link or not */
587                 tmprc = CIFS_open(xid, &oparms, &oplock, NULL);
588                 if (tmprc == -EOPNOTSUPP)
589                         *symlink = true;
590                 else if (tmprc == 0)
591                         CIFSSMBClose(xid, tcon, fid.netfid);
592         }
593 
594         return rc;
595 }
596 
597 static int
598 cifs_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
599                   struct cifs_sb_info *cifs_sb, const char *full_path,
600                   u64 *uniqueid, FILE_ALL_INFO *data)
601 {
602         /*
603          * We can not use the IndexNumber field by default from Windows or
604          * Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA
605          * CIFS spec claims that this value is unique within the scope of a
606          * share, and the windows docs hint that it's actually unique
607          * per-machine.
608          *
609          * There may be higher info levels that work but are there Windows
610          * server or network appliances for which IndexNumber field is not
611          * guaranteed unique?
612          */
613         return CIFSGetSrvInodeNumber(xid, tcon, full_path, uniqueid,
614                                      cifs_sb->local_nls,
615                                      cifs_remap(cifs_sb));
616 }
617 
618 static int
619 cifs_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
620                      struct cifs_fid *fid, FILE_ALL_INFO *data)
621 {
622         return CIFSSMBQFileInfo(xid, tcon, fid->netfid, data);
623 }
624 
625 static void
626 cifs_clear_stats(struct cifs_tcon *tcon)
627 {
628         atomic_set(&tcon->stats.cifs_stats.num_writes, 0);
629         atomic_set(&tcon->stats.cifs_stats.num_reads, 0);
630         atomic_set(&tcon->stats.cifs_stats.num_flushes, 0);
631         atomic_set(&tcon->stats.cifs_stats.num_oplock_brks, 0);
632         atomic_set(&tcon->stats.cifs_stats.num_opens, 0);
633         atomic_set(&tcon->stats.cifs_stats.num_posixopens, 0);
634         atomic_set(&tcon->stats.cifs_stats.num_posixmkdirs, 0);
635         atomic_set(&tcon->stats.cifs_stats.num_closes, 0);
636         atomic_set(&tcon->stats.cifs_stats.num_deletes, 0);
637         atomic_set(&tcon->stats.cifs_stats.num_mkdirs, 0);
638         atomic_set(&tcon->stats.cifs_stats.num_rmdirs, 0);
639         atomic_set(&tcon->stats.cifs_stats.num_renames, 0);
640         atomic_set(&tcon->stats.cifs_stats.num_t2renames, 0);
641         atomic_set(&tcon->stats.cifs_stats.num_ffirst, 0);
642         atomic_set(&tcon->stats.cifs_stats.num_fnext, 0);
643         atomic_set(&tcon->stats.cifs_stats.num_fclose, 0);
644         atomic_set(&tcon->stats.cifs_stats.num_hardlinks, 0);
645         atomic_set(&tcon->stats.cifs_stats.num_symlinks, 0);
646         atomic_set(&tcon->stats.cifs_stats.num_locks, 0);
647         atomic_set(&tcon->stats.cifs_stats.num_acl_get, 0);
648         atomic_set(&tcon->stats.cifs_stats.num_acl_set, 0);
649 }
650 
651 static void
652 cifs_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
653 {
654         seq_printf(m, " Oplocks breaks: %d",
655                    atomic_read(&tcon->stats.cifs_stats.num_oplock_brks));
656         seq_printf(m, "\nReads:  %d Bytes: %llu",
657                    atomic_read(&tcon->stats.cifs_stats.num_reads),
658                    (long long)(tcon->bytes_read));
659         seq_printf(m, "\nWrites: %d Bytes: %llu",
660                    atomic_read(&tcon->stats.cifs_stats.num_writes),
661                    (long long)(tcon->bytes_written));
662         seq_printf(m, "\nFlushes: %d",
663                    atomic_read(&tcon->stats.cifs_stats.num_flushes));
664         seq_printf(m, "\nLocks: %d HardLinks: %d Symlinks: %d",
665                    atomic_read(&tcon->stats.cifs_stats.num_locks),
666                    atomic_read(&tcon->stats.cifs_stats.num_hardlinks),
667                    atomic_read(&tcon->stats.cifs_stats.num_symlinks));
668         seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
669                    atomic_read(&tcon->stats.cifs_stats.num_opens),
670                    atomic_read(&tcon->stats.cifs_stats.num_closes),
671                    atomic_read(&tcon->stats.cifs_stats.num_deletes));
672         seq_printf(m, "\nPosix Opens: %d Posix Mkdirs: %d",
673                    atomic_read(&tcon->stats.cifs_stats.num_posixopens),
674                    atomic_read(&tcon->stats.cifs_stats.num_posixmkdirs));
675         seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
676                    atomic_read(&tcon->stats.cifs_stats.num_mkdirs),
677                    atomic_read(&tcon->stats.cifs_stats.num_rmdirs));
678         seq_printf(m, "\nRenames: %d T2 Renames %d",
679                    atomic_read(&tcon->stats.cifs_stats.num_renames),
680                    atomic_read(&tcon->stats.cifs_stats.num_t2renames));
681         seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
682                    atomic_read(&tcon->stats.cifs_stats.num_ffirst),
683                    atomic_read(&tcon->stats.cifs_stats.num_fnext),
684                    atomic_read(&tcon->stats.cifs_stats.num_fclose));
685 }
686 
687 static void
688 cifs_mkdir_setinfo(struct inode *inode, const char *full_path,
689                    struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
690                    const unsigned int xid)
691 {
692         FILE_BASIC_INFO info;
693         struct cifsInodeInfo *cifsInode;
694         u32 dosattrs;
695         int rc;
696 
697         memset(&info, 0, sizeof(info));
698         cifsInode = CIFS_I(inode);
699         dosattrs = cifsInode->cifsAttrs|ATTR_READONLY;
700         info.Attributes = cpu_to_le32(dosattrs);
701         rc = CIFSSMBSetPathInfo(xid, tcon, full_path, &info, cifs_sb->local_nls,
702                                 cifs_sb);
703         if (rc == 0)
704                 cifsInode->cifsAttrs = dosattrs;
705 }
706 
707 static int
708 cifs_open_file(const unsigned int xid, struct cifs_open_parms *oparms,
709                __u32 *oplock, FILE_ALL_INFO *buf)
710 {
711         if (!(oparms->tcon->ses->capabilities & CAP_NT_SMBS))
712                 return SMBLegacyOpen(xid, oparms->tcon, oparms->path,
713                                      oparms->disposition,
714                                      oparms->desired_access,
715                                      oparms->create_options,
716                                      &oparms->fid->netfid, oplock, buf,
717                                      oparms->cifs_sb->local_nls,
718                                      cifs_remap(oparms->cifs_sb));
719         return CIFS_open(xid, oparms, oplock, buf);
720 }
721 
722 static void
723 cifs_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
724 {
725         struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
726         cfile->fid.netfid = fid->netfid;
727         cifs_set_oplock_level(cinode, oplock);
728         cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
729 }
730 
731 static void
732 cifs_close_file(const unsigned int xid, struct cifs_tcon *tcon,
733                 struct cifs_fid *fid)
734 {
735         CIFSSMBClose(xid, tcon, fid->netfid);
736 }
737 
738 static int
739 cifs_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
740                 struct cifs_fid *fid)
741 {
742         return CIFSSMBFlush(xid, tcon, fid->netfid);
743 }
744 
745 static int
746 cifs_sync_read(const unsigned int xid, struct cifs_fid *pfid,
747                struct cifs_io_parms *parms, unsigned int *bytes_read,
748                char **buf, int *buf_type)
749 {
750         parms->netfid = pfid->netfid;
751         return CIFSSMBRead(xid, parms, bytes_read, buf, buf_type);
752 }
753 
754 static int
755 cifs_sync_write(const unsigned int xid, struct cifs_fid *pfid,
756                 struct cifs_io_parms *parms, unsigned int *written,
757                 struct kvec *iov, unsigned long nr_segs)
758 {
759 
760         parms->netfid = pfid->netfid;
761         return CIFSSMBWrite2(xid, parms, written, iov, nr_segs);
762 }
763 
764 static int
765 smb_set_file_info(struct inode *inode, const char *full_path,
766                   FILE_BASIC_INFO *buf, const unsigned int xid)
767 {
768         int oplock = 0;
769         int rc;
770         __u32 netpid;
771         struct cifs_fid fid;
772         struct cifs_open_parms oparms;
773         struct cifsFileInfo *open_file;
774         struct cifsInodeInfo *cinode = CIFS_I(inode);
775         struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
776         struct tcon_link *tlink = NULL;
777         struct cifs_tcon *tcon;
778 
779         /* if the file is already open for write, just use that fileid */
780         open_file = find_writable_file(cinode, FIND_WR_FSUID_ONLY);
781         if (open_file) {
782                 fid.netfid = open_file->fid.netfid;
783                 netpid = open_file->pid;
784                 tcon = tlink_tcon(open_file->tlink);
785                 goto set_via_filehandle;
786         }
787 
788         tlink = cifs_sb_tlink(cifs_sb);
789         if (IS_ERR(tlink)) {
790                 rc = PTR_ERR(tlink);
791                 tlink = NULL;
792                 goto out;
793         }
794         tcon = tlink_tcon(tlink);
795 
796         rc = CIFSSMBSetPathInfo(xid, tcon, full_path, buf, cifs_sb->local_nls,
797                                 cifs_sb);
798         if (rc == 0) {
799                 cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
800                 goto out;
801         } else if (rc != -EOPNOTSUPP && rc != -EINVAL) {
802                 goto out;
803         }
804 
805         oparms.tcon = tcon;
806         oparms.cifs_sb = cifs_sb;
807         oparms.desired_access = SYNCHRONIZE | FILE_WRITE_ATTRIBUTES;
808         oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
809         oparms.disposition = FILE_OPEN;
810         oparms.path = full_path;
811         oparms.fid = &fid;
812         oparms.reconnect = false;
813 
814         cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n");
815         rc = CIFS_open(xid, &oparms, &oplock, NULL);
816         if (rc != 0) {
817                 if (rc == -EIO)
818                         rc = -EINVAL;
819                 goto out;
820         }
821 
822         netpid = current->tgid;
823 
824 set_via_filehandle:
825         rc = CIFSSMBSetFileInfo(xid, tcon, buf, fid.netfid, netpid);
826         if (!rc)
827                 cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
828 
829         if (open_file == NULL)
830                 CIFSSMBClose(xid, tcon, fid.netfid);
831         else
832                 cifsFileInfo_put(open_file);
833 out:
834         if (tlink != NULL)
835                 cifs_put_tlink(tlink);
836         return rc;
837 }
838 
839 static int
840 cifs_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
841                    struct cifsFileInfo *cfile)
842 {
843         return CIFSSMB_set_compression(xid, tcon, cfile->fid.netfid);
844 }
845 
846 static int
847 cifs_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
848                      const char *path, struct cifs_sb_info *cifs_sb,
849                      struct cifs_fid *fid, __u16 search_flags,
850                      struct cifs_search_info *srch_inf)
851 {
852         int rc;
853 
854         rc = CIFSFindFirst(xid, tcon, path, cifs_sb,
855                            &fid->netfid, search_flags, srch_inf, true);
856         if (rc)
857                 cifs_dbg(FYI, "find first failed=%d\n", rc);
858         return rc;
859 }
860 
861 static int
862 cifs_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
863                     struct cifs_fid *fid, __u16 search_flags,
864                     struct cifs_search_info *srch_inf)
865 {
866         return CIFSFindNext(xid, tcon, fid->netfid, search_flags, srch_inf);
867 }
868 
869 static int
870 cifs_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
871                struct cifs_fid *fid)
872 {
873         return CIFSFindClose(xid, tcon, fid->netfid);
874 }
875 
876 static int
877 cifs_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
878                      struct cifsInodeInfo *cinode)
879 {
880         return CIFSSMBLock(0, tcon, fid->netfid, current->tgid, 0, 0, 0, 0,
881                            LOCKING_ANDX_OPLOCK_RELEASE, false,
882                            CIFS_CACHE_READ(cinode) ? 1 : 0);
883 }
884 
885 static int
886 cifs_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
887              struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
888 {
889         int rc = -EOPNOTSUPP;
890 
891         buf->f_type = CIFS_SUPER_MAGIC;
892 
893         /*
894          * We could add a second check for a QFS Unix capability bit
895          */
896         if ((tcon->ses->capabilities & CAP_UNIX) &&
897             (CIFS_POSIX_EXTENSIONS & le64_to_cpu(tcon->fsUnixInfo.Capability)))
898                 rc = CIFSSMBQFSPosixInfo(xid, tcon, buf);
899 
900         /*
901          * Only need to call the old QFSInfo if failed on newer one,
902          * e.g. by OS/2.
903          **/
904         if (rc && (tcon->ses->capabilities & CAP_NT_SMBS))
905                 rc = CIFSSMBQFSInfo(xid, tcon, buf);
906 
907         /*
908          * Some old Windows servers also do not support level 103, retry with
909          * older level one if old server failed the previous call or we
910          * bypassed it because we detected that this was an older LANMAN sess
911          */
912         if (rc)
913                 rc = SMBOldQFSInfo(xid, tcon, buf);
914         return rc;
915 }
916 
917 static int
918 cifs_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
919                __u64 length, __u32 type, int lock, int unlock, bool wait)
920 {
921         return CIFSSMBLock(xid, tlink_tcon(cfile->tlink), cfile->fid.netfid,
922                            current->tgid, length, offset, unlock, lock,
923                            (__u8)type, wait, 0);
924 }
925 
926 static int
927 cifs_unix_dfs_readlink(const unsigned int xid, struct cifs_tcon *tcon,
928                        const unsigned char *searchName, char **symlinkinfo,
929                        const struct nls_table *nls_codepage)
930 {
931 #ifdef CONFIG_CIFS_DFS_UPCALL
932         int rc;
933         struct dfs_info3_param referral = {0};
934 
935         rc = get_dfs_path(xid, tcon->ses, searchName, nls_codepage, &referral,
936                           0);
937 
938         if (!rc) {
939                 *symlinkinfo = kstrdup(referral.node_name, GFP_KERNEL);
940                 free_dfs_info_param(&referral);
941                 if (!*symlinkinfo)
942                         rc = -ENOMEM;
943         }
944         return rc;
945 #else /* No DFS support */
946         return -EREMOTE;
947 #endif
948 }
949 
950 static int
951 cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
952                    struct cifs_sb_info *cifs_sb, const char *full_path,
953                    char **target_path, bool is_reparse_point)
954 {
955         int rc;
956         int oplock = 0;
957         struct cifs_fid fid;
958         struct cifs_open_parms oparms;
959 
960         cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
961 
962         if (is_reparse_point) {
963                 cifs_dbg(VFS, "reparse points not handled for SMB1 symlinks\n");
964                 return -EOPNOTSUPP;
965         }
966 
967         /* Check for unix extensions */
968         if (cap_unix(tcon->ses)) {
969                 rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, target_path,
970                                              cifs_sb->local_nls,
971                                              cifs_remap(cifs_sb));
972                 if (rc == -EREMOTE)
973                         rc = cifs_unix_dfs_readlink(xid, tcon, full_path,
974                                                     target_path,
975                                                     cifs_sb->local_nls);
976 
977                 goto out;
978         }
979 
980         oparms.tcon = tcon;
981         oparms.cifs_sb = cifs_sb;
982         oparms.desired_access = FILE_READ_ATTRIBUTES;
983         oparms.create_options = cifs_create_options(cifs_sb,
984                                                     OPEN_REPARSE_POINT);
985         oparms.disposition = FILE_OPEN;
986         oparms.path = full_path;
987         oparms.fid = &fid;
988         oparms.reconnect = false;
989 
990         rc = CIFS_open(xid, &oparms, &oplock, NULL);
991         if (rc)
992                 goto out;
993 
994         rc = CIFSSMBQuerySymLink(xid, tcon, fid.netfid, target_path,
995                                  cifs_sb->local_nls);
996         if (rc)
997                 goto out_close;
998 
999         convert_delimiter(*target_path, '/');
1000 out_close:
1001         CIFSSMBClose(xid, tcon, fid.netfid);
1002 out:
1003         if (!rc)
1004                 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
1005         return rc;
1006 }
1007 
1008 static bool
1009 cifs_is_read_op(__u32 oplock)
1010 {
1011         return oplock == OPLOCK_READ;
1012 }
1013 
1014 static unsigned int
1015 cifs_wp_retry_size(struct inode *inode)
1016 {
1017         return CIFS_SB(inode->i_sb)->ctx->wsize;
1018 }
1019 
1020 static bool
1021 cifs_dir_needs_close(struct cifsFileInfo *cfile)
1022 {
1023         return !cfile->srch_inf.endOfSearch && !cfile->invalidHandle;
1024 }
1025 
1026 static bool
1027 cifs_can_echo(struct TCP_Server_Info *server)
1028 {
1029         if (server->tcpStatus == CifsGood)
1030                 return true;
1031 
1032         return false;
1033 }
1034 
1035 static int
1036 cifs_make_node(unsigned int xid, struct inode *inode,
1037                struct dentry *dentry, struct cifs_tcon *tcon,
1038                const char *full_path, umode_t mode, dev_t dev)
1039 {
1040         struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1041         struct inode *newinode = NULL;
1042         int rc = -EPERM;
1043         FILE_ALL_INFO *buf = NULL;
1044         struct cifs_io_parms io_parms;
1045         __u32 oplock = 0;
1046         struct cifs_fid fid;
1047         struct cifs_open_parms oparms;
1048         unsigned int bytes_written;
1049         struct win_dev *pdev;
1050         struct kvec iov[2];
1051 
1052         if (tcon->unix_ext) {
1053                 /*
1054                  * SMB1 Unix Extensions: requires server support but
1055                  * works with all special files
1056                  */
1057                 struct cifs_unix_set_info_args args = {
1058                         .mode   = mode & ~current_umask(),
1059                         .ctime  = NO_CHANGE_64,
1060                         .atime  = NO_CHANGE_64,
1061                         .mtime  = NO_CHANGE_64,
1062                         .device = dev,
1063                 };
1064                 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
1065                         args.uid = current_fsuid();
1066                         args.gid = current_fsgid();
1067                 } else {
1068                         args.uid = INVALID_UID; /* no change */
1069                         args.gid = INVALID_GID; /* no change */
1070                 }
1071                 rc = CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
1072                                             cifs_sb->local_nls,
1073                                             cifs_remap(cifs_sb));
1074                 if (rc)
1075                         goto out;
1076 
1077                 rc = cifs_get_inode_info_unix(&newinode, full_path,
1078                                               inode->i_sb, xid);
1079 
1080                 if (rc == 0)
1081                         d_instantiate(dentry, newinode);
1082                 goto out;
1083         }
1084 
1085         /*
1086          * SMB1 SFU emulation: should work with all servers, but only
1087          * support block and char device (no socket & fifo)
1088          */
1089         if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
1090                 goto out;
1091 
1092         if (!S_ISCHR(mode) && !S_ISBLK(mode))
1093                 goto out;
1094 
1095         cifs_dbg(FYI, "sfu compat create special file\n");
1096 
1097         buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
1098         if (buf == NULL) {
1099                 rc = -ENOMEM;
1100                 goto out;
1101         }
1102 
1103         oparms.tcon = tcon;
1104         oparms.cifs_sb = cifs_sb;
1105         oparms.desired_access = GENERIC_WRITE;
1106         oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR |
1107                                                     CREATE_OPTION_SPECIAL);
1108         oparms.disposition = FILE_CREATE;
1109         oparms.path = full_path;
1110         oparms.fid = &fid;
1111         oparms.reconnect = false;
1112 
1113         if (tcon->ses->server->oplocks)
1114                 oplock = REQ_OPLOCK;
1115         else
1116                 oplock = 0;
1117         rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, buf);
1118         if (rc)
1119                 goto out;
1120 
1121         /*
1122          * BB Do not bother to decode buf since no local inode yet to put
1123          * timestamps in, but we can reuse it safely.
1124          */
1125 
1126         pdev = (struct win_dev *)buf;
1127         io_parms.pid = current->tgid;
1128         io_parms.tcon = tcon;
1129         io_parms.offset = 0;
1130         io_parms.length = sizeof(struct win_dev);
1131         iov[1].iov_base = buf;
1132         iov[1].iov_len = sizeof(struct win_dev);
1133         if (S_ISCHR(mode)) {
1134                 memcpy(pdev->type, "IntxCHR", 8);
1135                 pdev->major = cpu_to_le64(MAJOR(dev));
1136                 pdev->minor = cpu_to_le64(MINOR(dev));
1137                 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
1138                                                         &bytes_written, iov, 1);
1139         } else if (S_ISBLK(mode)) {
1140                 memcpy(pdev->type, "IntxBLK", 8);
1141                 pdev->major = cpu_to_le64(MAJOR(dev));
1142                 pdev->minor = cpu_to_le64(MINOR(dev));
1143                 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
1144                                                         &bytes_written, iov, 1);
1145         }
1146         tcon->ses->server->ops->close(xid, tcon, &fid);
1147         d_drop(dentry);
1148 
1149         /* FIXME: add code here to set EAs */
1150 out:
1151         kfree(buf);
1152         return rc;
1153 }
1154 
1155 
1156 
1157 struct smb_version_operations smb1_operations = {
1158         .send_cancel = send_nt_cancel,
1159         .compare_fids = cifs_compare_fids,
1160         .setup_request = cifs_setup_request,
1161         .setup_async_request = cifs_setup_async_request,
1162         .check_receive = cifs_check_receive,
1163         .add_credits = cifs_add_credits,
1164         .set_credits = cifs_set_credits,
1165         .get_credits_field = cifs_get_credits_field,
1166         .get_credits = cifs_get_credits,
1167         .wait_mtu_credits = cifs_wait_mtu_credits,
1168         .get_next_mid = cifs_get_next_mid,
1169         .read_data_offset = cifs_read_data_offset,
1170         .read_data_length = cifs_read_data_length,
1171         .map_error = map_smb_to_linux_error,
1172         .find_mid = cifs_find_mid,
1173         .check_message = checkSMB,
1174         .dump_detail = cifs_dump_detail,
1175         .clear_stats = cifs_clear_stats,
1176         .print_stats = cifs_print_stats,
1177         .is_oplock_break = is_valid_oplock_break,
1178         .downgrade_oplock = cifs_downgrade_oplock,
1179         .check_trans2 = cifs_check_trans2,
1180         .need_neg = cifs_need_neg,
1181         .negotiate = cifs_negotiate,
1182         .negotiate_wsize = cifs_negotiate_wsize,
1183         .negotiate_rsize = cifs_negotiate_rsize,
1184         .sess_setup = CIFS_SessSetup,
1185         .logoff = CIFSSMBLogoff,
1186         .tree_connect = CIFSTCon,
1187         .tree_disconnect = CIFSSMBTDis,
1188         .get_dfs_refer = CIFSGetDFSRefer,
1189         .qfs_tcon = cifs_qfs_tcon,
1190         .is_path_accessible = cifs_is_path_accessible,
1191         .can_echo = cifs_can_echo,
1192         .query_path_info = cifs_query_path_info,
1193         .query_file_info = cifs_query_file_info,
1194         .get_srv_inum = cifs_get_srv_inum,
1195         .set_path_size = CIFSSMBSetEOF,
1196         .set_file_size = CIFSSMBSetFileSize,
1197         .set_file_info = smb_set_file_info,
1198         .set_compression = cifs_set_compression,
1199         .echo = CIFSSMBEcho,
1200         .mkdir = CIFSSMBMkDir,
1201         .mkdir_setinfo = cifs_mkdir_setinfo,
1202         .rmdir = CIFSSMBRmDir,
1203         .unlink = CIFSSMBDelFile,
1204         .rename_pending_delete = cifs_rename_pending_delete,
1205         .rename = CIFSSMBRename,
1206         .create_hardlink = CIFSCreateHardLink,
1207         .query_symlink = cifs_query_symlink,
1208         .open = cifs_open_file,
1209         .set_fid = cifs_set_fid,
1210         .close = cifs_close_file,
1211         .flush = cifs_flush_file,
1212         .async_readv = cifs_async_readv,
1213         .async_writev = cifs_async_writev,
1214         .sync_read = cifs_sync_read,
1215         .sync_write = cifs_sync_write,
1216         .query_dir_first = cifs_query_dir_first,
1217         .query_dir_next = cifs_query_dir_next,
1218         .close_dir = cifs_close_dir,
1219         .calc_smb_size = smbCalcSize,
1220         .oplock_response = cifs_oplock_response,
1221         .queryfs = cifs_queryfs,
1222         .mand_lock = cifs_mand_lock,
1223         .mand_unlock_range = cifs_unlock_range,
1224         .push_mand_locks = cifs_push_mandatory_locks,
1225         .query_mf_symlink = cifs_query_mf_symlink,
1226         .create_mf_symlink = cifs_create_mf_symlink,
1227         .is_read_op = cifs_is_read_op,
1228         .wp_retry_size = cifs_wp_retry_size,
1229         .dir_needs_close = cifs_dir_needs_close,
1230         .select_sectype = cifs_select_sectype,
1231 #ifdef CONFIG_CIFS_XATTR
1232         .query_all_EAs = CIFSSMBQAllEAs,
1233         .set_EA = CIFSSMBSetEA,
1234 #endif /* CIFS_XATTR */
1235         .get_acl = get_cifs_acl,
1236         .get_acl_by_fid = get_cifs_acl_by_fid,
1237         .set_acl = set_cifs_acl,
1238         .make_node = cifs_make_node,
1239 };
1240 
1241 struct smb_version_values smb1_values = {
1242         .version_string = SMB1_VERSION_STRING,
1243         .protocol_id = SMB10_PROT_ID,
1244         .large_lock_type = LOCKING_ANDX_LARGE_FILES,
1245         .exclusive_lock_type = 0,
1246         .shared_lock_type = LOCKING_ANDX_SHARED_LOCK,
1247         .unlock_lock_type = 0,
1248         .header_preamble_size = 4,
1249         .header_size = sizeof(struct smb_hdr),
1250         .max_header_size = MAX_CIFS_HDR_SIZE,
1251         .read_rsp_size = sizeof(READ_RSP),
1252         .lock_cmd = cpu_to_le16(SMB_COM_LOCKING_ANDX),
1253         .cap_unix = CAP_UNIX,
1254         .cap_nt_find = CAP_NT_SMBS | CAP_NT_FIND,
1255         .cap_large_files = CAP_LARGE_FILES,
1256         .signing_enabled = SECMODE_SIGN_ENABLED,
1257         .signing_required = SECMODE_SIGN_REQUIRED,
1258 };
1259 

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