Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
[linux-2.6-microblaze.git] / fs / cifs / smb1ops.c
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  */
26 static int
27 send_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
64 static bool
65 cifs_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
66 {
67         return ob1->fid.netfid == ob2->fid.netfid;
68 }
69
70 static unsigned int
71 cifs_read_data_offset(char *buf)
72 {
73         READ_RSP *rsp = (READ_RSP *)buf;
74         return le16_to_cpu(rsp->DataOffset);
75 }
76
77 static unsigned int
78 cifs_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
87 static struct mid_q_entry *
88 cifs_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
107 static void
108 cifs_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
118 static void
119 cifs_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
127 static int *
128 cifs_get_credits_field(struct TCP_Server_Info *server, const int optype)
129 {
130         return &server->credits;
131 }
132
133 static unsigned int
134 cifs_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  */
160 static __u64
161 cifs_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  */
236 static int
237 check2ndT2(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
279 static int
280 coalesce_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
370 static void
371 cifs_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
378 static bool
379 cifs_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
409 static bool
410 cifs_need_neg(struct TCP_Server_Info *server)
411 {
412         return server->maxBuf == 0;
413 }
414
415 static int
416 cifs_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
430 static unsigned int
431 cifs_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
465 static unsigned int
466 cifs_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
506 static void
507 cifs_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
508 {
509         CIFSSMBQFSDeviceInfo(xid, tcon);
510         CIFSSMBQFSAttributeInfo(xid, tcon);
511 }
512
513 static int
514 cifs_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
515                         struct cifs_sb_info *cifs_sb, const char *full_path)
516 {
517         int rc;
518         FILE_ALL_INFO *file_info;
519
520         file_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
521         if (file_info == NULL)
522                 return -ENOMEM;
523
524         rc = CIFSSMBQPathInfo(xid, tcon, full_path, file_info,
525                               0 /* not legacy */, cifs_sb->local_nls,
526                               cifs_remap(cifs_sb));
527
528         if (rc == -EOPNOTSUPP || rc == -EINVAL)
529                 rc = SMBQueryInformation(xid, tcon, full_path, file_info,
530                                 cifs_sb->local_nls, cifs_remap(cifs_sb));
531         kfree(file_info);
532         return rc;
533 }
534
535 static int
536 cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
537                      struct cifs_sb_info *cifs_sb, const char *full_path,
538                      FILE_ALL_INFO *data, bool *adjustTZ, bool *symlink)
539 {
540         int rc;
541
542         *symlink = false;
543
544         /* could do find first instead but this returns more info */
545         rc = CIFSSMBQPathInfo(xid, tcon, full_path, data, 0 /* not legacy */,
546                               cifs_sb->local_nls, cifs_remap(cifs_sb));
547         /*
548          * BB optimize code so we do not make the above call when server claims
549          * no NT SMB support and the above call failed at least once - set flag
550          * in tcon or mount.
551          */
552         if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
553                 rc = SMBQueryInformation(xid, tcon, full_path, data,
554                                          cifs_sb->local_nls,
555                                          cifs_remap(cifs_sb));
556                 *adjustTZ = true;
557         }
558
559         if (!rc && (le32_to_cpu(data->Attributes) & ATTR_REPARSE)) {
560                 int tmprc;
561                 int oplock = 0;
562                 struct cifs_fid fid;
563                 struct cifs_open_parms oparms;
564
565                 oparms.tcon = tcon;
566                 oparms.cifs_sb = cifs_sb;
567                 oparms.desired_access = FILE_READ_ATTRIBUTES;
568                 oparms.create_options = 0;
569                 oparms.disposition = FILE_OPEN;
570                 oparms.path = full_path;
571                 oparms.fid = &fid;
572                 oparms.reconnect = false;
573
574                 /* Need to check if this is a symbolic link or not */
575                 tmprc = CIFS_open(xid, &oparms, &oplock, NULL);
576                 if (tmprc == -EOPNOTSUPP)
577                         *symlink = true;
578                 else if (tmprc == 0)
579                         CIFSSMBClose(xid, tcon, fid.netfid);
580         }
581
582         return rc;
583 }
584
585 static int
586 cifs_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
587                   struct cifs_sb_info *cifs_sb, const char *full_path,
588                   u64 *uniqueid, FILE_ALL_INFO *data)
589 {
590         /*
591          * We can not use the IndexNumber field by default from Windows or
592          * Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA
593          * CIFS spec claims that this value is unique within the scope of a
594          * share, and the windows docs hint that it's actually unique
595          * per-machine.
596          *
597          * There may be higher info levels that work but are there Windows
598          * server or network appliances for which IndexNumber field is not
599          * guaranteed unique?
600          */
601         return CIFSGetSrvInodeNumber(xid, tcon, full_path, uniqueid,
602                                      cifs_sb->local_nls,
603                                      cifs_remap(cifs_sb));
604 }
605
606 static int
607 cifs_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
608                      struct cifs_fid *fid, FILE_ALL_INFO *data)
609 {
610         return CIFSSMBQFileInfo(xid, tcon, fid->netfid, data);
611 }
612
613 static void
614 cifs_clear_stats(struct cifs_tcon *tcon)
615 {
616         atomic_set(&tcon->stats.cifs_stats.num_writes, 0);
617         atomic_set(&tcon->stats.cifs_stats.num_reads, 0);
618         atomic_set(&tcon->stats.cifs_stats.num_flushes, 0);
619         atomic_set(&tcon->stats.cifs_stats.num_oplock_brks, 0);
620         atomic_set(&tcon->stats.cifs_stats.num_opens, 0);
621         atomic_set(&tcon->stats.cifs_stats.num_posixopens, 0);
622         atomic_set(&tcon->stats.cifs_stats.num_posixmkdirs, 0);
623         atomic_set(&tcon->stats.cifs_stats.num_closes, 0);
624         atomic_set(&tcon->stats.cifs_stats.num_deletes, 0);
625         atomic_set(&tcon->stats.cifs_stats.num_mkdirs, 0);
626         atomic_set(&tcon->stats.cifs_stats.num_rmdirs, 0);
627         atomic_set(&tcon->stats.cifs_stats.num_renames, 0);
628         atomic_set(&tcon->stats.cifs_stats.num_t2renames, 0);
629         atomic_set(&tcon->stats.cifs_stats.num_ffirst, 0);
630         atomic_set(&tcon->stats.cifs_stats.num_fnext, 0);
631         atomic_set(&tcon->stats.cifs_stats.num_fclose, 0);
632         atomic_set(&tcon->stats.cifs_stats.num_hardlinks, 0);
633         atomic_set(&tcon->stats.cifs_stats.num_symlinks, 0);
634         atomic_set(&tcon->stats.cifs_stats.num_locks, 0);
635         atomic_set(&tcon->stats.cifs_stats.num_acl_get, 0);
636         atomic_set(&tcon->stats.cifs_stats.num_acl_set, 0);
637 }
638
639 static void
640 cifs_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
641 {
642         seq_printf(m, " Oplocks breaks: %d",
643                    atomic_read(&tcon->stats.cifs_stats.num_oplock_brks));
644         seq_printf(m, "\nReads:  %d Bytes: %llu",
645                    atomic_read(&tcon->stats.cifs_stats.num_reads),
646                    (long long)(tcon->bytes_read));
647         seq_printf(m, "\nWrites: %d Bytes: %llu",
648                    atomic_read(&tcon->stats.cifs_stats.num_writes),
649                    (long long)(tcon->bytes_written));
650         seq_printf(m, "\nFlushes: %d",
651                    atomic_read(&tcon->stats.cifs_stats.num_flushes));
652         seq_printf(m, "\nLocks: %d HardLinks: %d Symlinks: %d",
653                    atomic_read(&tcon->stats.cifs_stats.num_locks),
654                    atomic_read(&tcon->stats.cifs_stats.num_hardlinks),
655                    atomic_read(&tcon->stats.cifs_stats.num_symlinks));
656         seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
657                    atomic_read(&tcon->stats.cifs_stats.num_opens),
658                    atomic_read(&tcon->stats.cifs_stats.num_closes),
659                    atomic_read(&tcon->stats.cifs_stats.num_deletes));
660         seq_printf(m, "\nPosix Opens: %d Posix Mkdirs: %d",
661                    atomic_read(&tcon->stats.cifs_stats.num_posixopens),
662                    atomic_read(&tcon->stats.cifs_stats.num_posixmkdirs));
663         seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
664                    atomic_read(&tcon->stats.cifs_stats.num_mkdirs),
665                    atomic_read(&tcon->stats.cifs_stats.num_rmdirs));
666         seq_printf(m, "\nRenames: %d T2 Renames %d",
667                    atomic_read(&tcon->stats.cifs_stats.num_renames),
668                    atomic_read(&tcon->stats.cifs_stats.num_t2renames));
669         seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
670                    atomic_read(&tcon->stats.cifs_stats.num_ffirst),
671                    atomic_read(&tcon->stats.cifs_stats.num_fnext),
672                    atomic_read(&tcon->stats.cifs_stats.num_fclose));
673 }
674
675 static void
676 cifs_mkdir_setinfo(struct inode *inode, const char *full_path,
677                    struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
678                    const unsigned int xid)
679 {
680         FILE_BASIC_INFO info;
681         struct cifsInodeInfo *cifsInode;
682         u32 dosattrs;
683         int rc;
684
685         memset(&info, 0, sizeof(info));
686         cifsInode = CIFS_I(inode);
687         dosattrs = cifsInode->cifsAttrs|ATTR_READONLY;
688         info.Attributes = cpu_to_le32(dosattrs);
689         rc = CIFSSMBSetPathInfo(xid, tcon, full_path, &info, cifs_sb->local_nls,
690                                 cifs_remap(cifs_sb));
691         if (rc == 0)
692                 cifsInode->cifsAttrs = dosattrs;
693 }
694
695 static int
696 cifs_open_file(const unsigned int xid, struct cifs_open_parms *oparms,
697                __u32 *oplock, FILE_ALL_INFO *buf)
698 {
699         if (!(oparms->tcon->ses->capabilities & CAP_NT_SMBS))
700                 return SMBLegacyOpen(xid, oparms->tcon, oparms->path,
701                                      oparms->disposition,
702                                      oparms->desired_access,
703                                      oparms->create_options,
704                                      &oparms->fid->netfid, oplock, buf,
705                                      oparms->cifs_sb->local_nls,
706                                      cifs_remap(oparms->cifs_sb));
707         return CIFS_open(xid, oparms, oplock, buf);
708 }
709
710 static void
711 cifs_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
712 {
713         struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
714         cfile->fid.netfid = fid->netfid;
715         cifs_set_oplock_level(cinode, oplock);
716         cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
717 }
718
719 static void
720 cifs_close_file(const unsigned int xid, struct cifs_tcon *tcon,
721                 struct cifs_fid *fid)
722 {
723         CIFSSMBClose(xid, tcon, fid->netfid);
724 }
725
726 static int
727 cifs_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
728                 struct cifs_fid *fid)
729 {
730         return CIFSSMBFlush(xid, tcon, fid->netfid);
731 }
732
733 static int
734 cifs_sync_read(const unsigned int xid, struct cifs_fid *pfid,
735                struct cifs_io_parms *parms, unsigned int *bytes_read,
736                char **buf, int *buf_type)
737 {
738         parms->netfid = pfid->netfid;
739         return CIFSSMBRead(xid, parms, bytes_read, buf, buf_type);
740 }
741
742 static int
743 cifs_sync_write(const unsigned int xid, struct cifs_fid *pfid,
744                 struct cifs_io_parms *parms, unsigned int *written,
745                 struct kvec *iov, unsigned long nr_segs)
746 {
747
748         parms->netfid = pfid->netfid;
749         return CIFSSMBWrite2(xid, parms, written, iov, nr_segs);
750 }
751
752 static int
753 smb_set_file_info(struct inode *inode, const char *full_path,
754                   FILE_BASIC_INFO *buf, const unsigned int xid)
755 {
756         int oplock = 0;
757         int rc;
758         __u32 netpid;
759         struct cifs_fid fid;
760         struct cifs_open_parms oparms;
761         struct cifsFileInfo *open_file;
762         struct cifsInodeInfo *cinode = CIFS_I(inode);
763         struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
764         struct tcon_link *tlink = NULL;
765         struct cifs_tcon *tcon;
766
767         /* if the file is already open for write, just use that fileid */
768         open_file = find_writable_file(cinode, true);
769         if (open_file) {
770                 fid.netfid = open_file->fid.netfid;
771                 netpid = open_file->pid;
772                 tcon = tlink_tcon(open_file->tlink);
773                 goto set_via_filehandle;
774         }
775
776         tlink = cifs_sb_tlink(cifs_sb);
777         if (IS_ERR(tlink)) {
778                 rc = PTR_ERR(tlink);
779                 tlink = NULL;
780                 goto out;
781         }
782         tcon = tlink_tcon(tlink);
783
784         rc = CIFSSMBSetPathInfo(xid, tcon, full_path, buf, cifs_sb->local_nls,
785                                 cifs_remap(cifs_sb));
786         if (rc == 0) {
787                 cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
788                 goto out;
789         } else if (rc != -EOPNOTSUPP && rc != -EINVAL) {
790                 goto out;
791         }
792
793         oparms.tcon = tcon;
794         oparms.cifs_sb = cifs_sb;
795         oparms.desired_access = SYNCHRONIZE | FILE_WRITE_ATTRIBUTES;
796         oparms.create_options = CREATE_NOT_DIR;
797         oparms.disposition = FILE_OPEN;
798         oparms.path = full_path;
799         oparms.fid = &fid;
800         oparms.reconnect = false;
801
802         cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n");
803         rc = CIFS_open(xid, &oparms, &oplock, NULL);
804         if (rc != 0) {
805                 if (rc == -EIO)
806                         rc = -EINVAL;
807                 goto out;
808         }
809
810         netpid = current->tgid;
811
812 set_via_filehandle:
813         rc = CIFSSMBSetFileInfo(xid, tcon, buf, fid.netfid, netpid);
814         if (!rc)
815                 cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
816
817         if (open_file == NULL)
818                 CIFSSMBClose(xid, tcon, fid.netfid);
819         else
820                 cifsFileInfo_put(open_file);
821 out:
822         if (tlink != NULL)
823                 cifs_put_tlink(tlink);
824         return rc;
825 }
826
827 static int
828 cifs_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
829                    struct cifsFileInfo *cfile)
830 {
831         return CIFSSMB_set_compression(xid, tcon, cfile->fid.netfid);
832 }
833
834 static int
835 cifs_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
836                      const char *path, struct cifs_sb_info *cifs_sb,
837                      struct cifs_fid *fid, __u16 search_flags,
838                      struct cifs_search_info *srch_inf)
839 {
840         int rc;
841
842         rc = CIFSFindFirst(xid, tcon, path, cifs_sb,
843                            &fid->netfid, search_flags, srch_inf, true);
844         if (rc)
845                 cifs_dbg(FYI, "find first failed=%d\n", rc);
846         return rc;
847 }
848
849 static int
850 cifs_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
851                     struct cifs_fid *fid, __u16 search_flags,
852                     struct cifs_search_info *srch_inf)
853 {
854         return CIFSFindNext(xid, tcon, fid->netfid, search_flags, srch_inf);
855 }
856
857 static int
858 cifs_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
859                struct cifs_fid *fid)
860 {
861         return CIFSFindClose(xid, tcon, fid->netfid);
862 }
863
864 static int
865 cifs_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
866                      struct cifsInodeInfo *cinode)
867 {
868         return CIFSSMBLock(0, tcon, fid->netfid, current->tgid, 0, 0, 0, 0,
869                            LOCKING_ANDX_OPLOCK_RELEASE, false,
870                            CIFS_CACHE_READ(cinode) ? 1 : 0);
871 }
872
873 static int
874 cifs_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
875              struct kstatfs *buf)
876 {
877         int rc = -EOPNOTSUPP;
878
879         buf->f_type = CIFS_MAGIC_NUMBER;
880
881         /*
882          * We could add a second check for a QFS Unix capability bit
883          */
884         if ((tcon->ses->capabilities & CAP_UNIX) &&
885             (CIFS_POSIX_EXTENSIONS & le64_to_cpu(tcon->fsUnixInfo.Capability)))
886                 rc = CIFSSMBQFSPosixInfo(xid, tcon, buf);
887
888         /*
889          * Only need to call the old QFSInfo if failed on newer one,
890          * e.g. by OS/2.
891          **/
892         if (rc && (tcon->ses->capabilities & CAP_NT_SMBS))
893                 rc = CIFSSMBQFSInfo(xid, tcon, buf);
894
895         /*
896          * Some old Windows servers also do not support level 103, retry with
897          * older level one if old server failed the previous call or we
898          * bypassed it because we detected that this was an older LANMAN sess
899          */
900         if (rc)
901                 rc = SMBOldQFSInfo(xid, tcon, buf);
902         return rc;
903 }
904
905 static int
906 cifs_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
907                __u64 length, __u32 type, int lock, int unlock, bool wait)
908 {
909         return CIFSSMBLock(xid, tlink_tcon(cfile->tlink), cfile->fid.netfid,
910                            current->tgid, length, offset, unlock, lock,
911                            (__u8)type, wait, 0);
912 }
913
914 static int
915 cifs_unix_dfs_readlink(const unsigned int xid, struct cifs_tcon *tcon,
916                        const unsigned char *searchName, char **symlinkinfo,
917                        const struct nls_table *nls_codepage)
918 {
919 #ifdef CONFIG_CIFS_DFS_UPCALL
920         int rc;
921         struct dfs_info3_param referral = {0};
922
923         rc = get_dfs_path(xid, tcon->ses, searchName, nls_codepage, &referral,
924                           0);
925
926         if (!rc) {
927                 *symlinkinfo = kstrndup(referral.node_name,
928                                         strlen(referral.node_name),
929                                         GFP_KERNEL);
930                 free_dfs_info_param(&referral);
931                 if (!*symlinkinfo)
932                         rc = -ENOMEM;
933         }
934         return rc;
935 #else /* No DFS support */
936         return -EREMOTE;
937 #endif
938 }
939
940 static int
941 cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
942                    struct cifs_sb_info *cifs_sb, const char *full_path,
943                    char **target_path, bool is_reparse_point)
944 {
945         int rc;
946         int oplock = 0;
947         struct cifs_fid fid;
948         struct cifs_open_parms oparms;
949
950         cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
951
952         if (is_reparse_point) {
953                 cifs_dbg(VFS, "reparse points not handled for SMB1 symlinks\n");
954                 return -EOPNOTSUPP;
955         }
956
957         /* Check for unix extensions */
958         if (cap_unix(tcon->ses)) {
959                 rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, target_path,
960                                              cifs_sb->local_nls,
961                                              cifs_remap(cifs_sb));
962                 if (rc == -EREMOTE)
963                         rc = cifs_unix_dfs_readlink(xid, tcon, full_path,
964                                                     target_path,
965                                                     cifs_sb->local_nls);
966
967                 goto out;
968         }
969
970         oparms.tcon = tcon;
971         oparms.cifs_sb = cifs_sb;
972         oparms.desired_access = FILE_READ_ATTRIBUTES;
973         oparms.create_options = OPEN_REPARSE_POINT;
974         oparms.disposition = FILE_OPEN;
975         oparms.path = full_path;
976         oparms.fid = &fid;
977         oparms.reconnect = false;
978
979         rc = CIFS_open(xid, &oparms, &oplock, NULL);
980         if (rc)
981                 goto out;
982
983         rc = CIFSSMBQuerySymLink(xid, tcon, fid.netfid, target_path,
984                                  cifs_sb->local_nls);
985         if (rc)
986                 goto out_close;
987
988         convert_delimiter(*target_path, '/');
989 out_close:
990         CIFSSMBClose(xid, tcon, fid.netfid);
991 out:
992         if (!rc)
993                 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
994         return rc;
995 }
996
997 static bool
998 cifs_is_read_op(__u32 oplock)
999 {
1000         return oplock == OPLOCK_READ;
1001 }
1002
1003 static unsigned int
1004 cifs_wp_retry_size(struct inode *inode)
1005 {
1006         return CIFS_SB(inode->i_sb)->wsize;
1007 }
1008
1009 static bool
1010 cifs_dir_needs_close(struct cifsFileInfo *cfile)
1011 {
1012         return !cfile->srch_inf.endOfSearch && !cfile->invalidHandle;
1013 }
1014
1015 static bool
1016 cifs_can_echo(struct TCP_Server_Info *server)
1017 {
1018         if (server->tcpStatus == CifsGood)
1019                 return true;
1020
1021         return false;
1022 }
1023
1024 static int
1025 cifs_make_node(unsigned int xid, struct inode *inode,
1026                struct dentry *dentry, struct cifs_tcon *tcon,
1027                char *full_path, umode_t mode, dev_t dev)
1028 {
1029         struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1030         struct inode *newinode = NULL;
1031         int rc = -EPERM;
1032         int create_options = CREATE_NOT_DIR | CREATE_OPTION_SPECIAL;
1033         FILE_ALL_INFO *buf = NULL;
1034         struct cifs_io_parms io_parms;
1035         __u32 oplock = 0;
1036         struct cifs_fid fid;
1037         struct cifs_open_parms oparms;
1038         unsigned int bytes_written;
1039         struct win_dev *pdev;
1040         struct kvec iov[2];
1041
1042         if (tcon->unix_ext) {
1043                 /*
1044                  * SMB1 Unix Extensions: requires server support but
1045                  * works with all special files
1046                  */
1047                 struct cifs_unix_set_info_args args = {
1048                         .mode   = mode & ~current_umask(),
1049                         .ctime  = NO_CHANGE_64,
1050                         .atime  = NO_CHANGE_64,
1051                         .mtime  = NO_CHANGE_64,
1052                         .device = dev,
1053                 };
1054                 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
1055                         args.uid = current_fsuid();
1056                         args.gid = current_fsgid();
1057                 } else {
1058                         args.uid = INVALID_UID; /* no change */
1059                         args.gid = INVALID_GID; /* no change */
1060                 }
1061                 rc = CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
1062                                             cifs_sb->local_nls,
1063                                             cifs_remap(cifs_sb));
1064                 if (rc)
1065                         goto out;
1066
1067                 rc = cifs_get_inode_info_unix(&newinode, full_path,
1068                                               inode->i_sb, xid);
1069
1070                 if (rc == 0)
1071                         d_instantiate(dentry, newinode);
1072                 goto out;
1073         }
1074
1075         /*
1076          * SMB1 SFU emulation: should work with all servers, but only
1077          * support block and char device (no socket & fifo)
1078          */
1079         if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
1080                 goto out;
1081
1082         if (!S_ISCHR(mode) && !S_ISBLK(mode))
1083                 goto out;
1084
1085         cifs_dbg(FYI, "sfu compat create special file\n");
1086
1087         buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
1088         if (buf == NULL) {
1089                 rc = -ENOMEM;
1090                 goto out;
1091         }
1092
1093         if (backup_cred(cifs_sb))
1094                 create_options |= CREATE_OPEN_BACKUP_INTENT;
1095
1096         oparms.tcon = tcon;
1097         oparms.cifs_sb = cifs_sb;
1098         oparms.desired_access = GENERIC_WRITE;
1099         oparms.create_options = create_options;
1100         oparms.disposition = FILE_CREATE;
1101         oparms.path = full_path;
1102         oparms.fid = &fid;
1103         oparms.reconnect = false;
1104
1105         if (tcon->ses->server->oplocks)
1106                 oplock = REQ_OPLOCK;
1107         else
1108                 oplock = 0;
1109         rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, buf);
1110         if (rc)
1111                 goto out;
1112
1113         /*
1114          * BB Do not bother to decode buf since no local inode yet to put
1115          * timestamps in, but we can reuse it safely.
1116          */
1117
1118         pdev = (struct win_dev *)buf;
1119         io_parms.pid = current->tgid;
1120         io_parms.tcon = tcon;
1121         io_parms.offset = 0;
1122         io_parms.length = sizeof(struct win_dev);
1123         iov[1].iov_base = buf;
1124         iov[1].iov_len = sizeof(struct win_dev);
1125         if (S_ISCHR(mode)) {
1126                 memcpy(pdev->type, "IntxCHR", 8);
1127                 pdev->major = cpu_to_le64(MAJOR(dev));
1128                 pdev->minor = cpu_to_le64(MINOR(dev));
1129                 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
1130                                                         &bytes_written, iov, 1);
1131         } else if (S_ISBLK(mode)) {
1132                 memcpy(pdev->type, "IntxBLK", 8);
1133                 pdev->major = cpu_to_le64(MAJOR(dev));
1134                 pdev->minor = cpu_to_le64(MINOR(dev));
1135                 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
1136                                                         &bytes_written, iov, 1);
1137         }
1138         tcon->ses->server->ops->close(xid, tcon, &fid);
1139         d_drop(dentry);
1140
1141         /* FIXME: add code here to set EAs */
1142 out:
1143         kfree(buf);
1144         return rc;
1145 }
1146
1147
1148
1149 struct smb_version_operations smb1_operations = {
1150         .send_cancel = send_nt_cancel,
1151         .compare_fids = cifs_compare_fids,
1152         .setup_request = cifs_setup_request,
1153         .setup_async_request = cifs_setup_async_request,
1154         .check_receive = cifs_check_receive,
1155         .add_credits = cifs_add_credits,
1156         .set_credits = cifs_set_credits,
1157         .get_credits_field = cifs_get_credits_field,
1158         .get_credits = cifs_get_credits,
1159         .wait_mtu_credits = cifs_wait_mtu_credits,
1160         .get_next_mid = cifs_get_next_mid,
1161         .read_data_offset = cifs_read_data_offset,
1162         .read_data_length = cifs_read_data_length,
1163         .map_error = map_smb_to_linux_error,
1164         .find_mid = cifs_find_mid,
1165         .check_message = checkSMB,
1166         .dump_detail = cifs_dump_detail,
1167         .clear_stats = cifs_clear_stats,
1168         .print_stats = cifs_print_stats,
1169         .is_oplock_break = is_valid_oplock_break,
1170         .downgrade_oplock = cifs_downgrade_oplock,
1171         .check_trans2 = cifs_check_trans2,
1172         .need_neg = cifs_need_neg,
1173         .negotiate = cifs_negotiate,
1174         .negotiate_wsize = cifs_negotiate_wsize,
1175         .negotiate_rsize = cifs_negotiate_rsize,
1176         .sess_setup = CIFS_SessSetup,
1177         .logoff = CIFSSMBLogoff,
1178         .tree_connect = CIFSTCon,
1179         .tree_disconnect = CIFSSMBTDis,
1180         .get_dfs_refer = CIFSGetDFSRefer,
1181         .qfs_tcon = cifs_qfs_tcon,
1182         .is_path_accessible = cifs_is_path_accessible,
1183         .can_echo = cifs_can_echo,
1184         .query_path_info = cifs_query_path_info,
1185         .query_file_info = cifs_query_file_info,
1186         .get_srv_inum = cifs_get_srv_inum,
1187         .set_path_size = CIFSSMBSetEOF,
1188         .set_file_size = CIFSSMBSetFileSize,
1189         .set_file_info = smb_set_file_info,
1190         .set_compression = cifs_set_compression,
1191         .echo = CIFSSMBEcho,
1192         .mkdir = CIFSSMBMkDir,
1193         .mkdir_setinfo = cifs_mkdir_setinfo,
1194         .rmdir = CIFSSMBRmDir,
1195         .unlink = CIFSSMBDelFile,
1196         .rename_pending_delete = cifs_rename_pending_delete,
1197         .rename = CIFSSMBRename,
1198         .create_hardlink = CIFSCreateHardLink,
1199         .query_symlink = cifs_query_symlink,
1200         .open = cifs_open_file,
1201         .set_fid = cifs_set_fid,
1202         .close = cifs_close_file,
1203         .flush = cifs_flush_file,
1204         .async_readv = cifs_async_readv,
1205         .async_writev = cifs_async_writev,
1206         .sync_read = cifs_sync_read,
1207         .sync_write = cifs_sync_write,
1208         .query_dir_first = cifs_query_dir_first,
1209         .query_dir_next = cifs_query_dir_next,
1210         .close_dir = cifs_close_dir,
1211         .calc_smb_size = smbCalcSize,
1212         .oplock_response = cifs_oplock_response,
1213         .queryfs = cifs_queryfs,
1214         .mand_lock = cifs_mand_lock,
1215         .mand_unlock_range = cifs_unlock_range,
1216         .push_mand_locks = cifs_push_mandatory_locks,
1217         .query_mf_symlink = cifs_query_mf_symlink,
1218         .create_mf_symlink = cifs_create_mf_symlink,
1219         .is_read_op = cifs_is_read_op,
1220         .wp_retry_size = cifs_wp_retry_size,
1221         .dir_needs_close = cifs_dir_needs_close,
1222         .select_sectype = cifs_select_sectype,
1223 #ifdef CONFIG_CIFS_XATTR
1224         .query_all_EAs = CIFSSMBQAllEAs,
1225         .set_EA = CIFSSMBSetEA,
1226 #endif /* CIFS_XATTR */
1227         .get_acl = get_cifs_acl,
1228         .get_acl_by_fid = get_cifs_acl_by_fid,
1229         .set_acl = set_cifs_acl,
1230         .make_node = cifs_make_node,
1231 };
1232
1233 struct smb_version_values smb1_values = {
1234         .version_string = SMB1_VERSION_STRING,
1235         .protocol_id = SMB10_PROT_ID,
1236         .large_lock_type = LOCKING_ANDX_LARGE_FILES,
1237         .exclusive_lock_type = 0,
1238         .shared_lock_type = LOCKING_ANDX_SHARED_LOCK,
1239         .unlock_lock_type = 0,
1240         .header_preamble_size = 4,
1241         .header_size = sizeof(struct smb_hdr),
1242         .max_header_size = MAX_CIFS_HDR_SIZE,
1243         .read_rsp_size = sizeof(READ_RSP),
1244         .lock_cmd = cpu_to_le16(SMB_COM_LOCKING_ANDX),
1245         .cap_unix = CAP_UNIX,
1246         .cap_nt_find = CAP_NT_SMBS | CAP_NT_FIND,
1247         .cap_large_files = CAP_LARGE_FILES,
1248         .signing_enabled = SECMODE_SIGN_ENABLED,
1249         .signing_required = SECMODE_SIGN_REQUIRED,
1250 };