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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 */
28static int
29send_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 cifs_server_lock(server);
42 rc = cifs_sign_smb(in_buf, server, &mid->sequence_number);
43 if (rc) {
44 cifs_server_unlock(server);
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 cifs_server_unlock(server);
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
66static bool
67cifs_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
68{
69 return ob1->fid.netfid == ob2->fid.netfid;
70}
71
72static unsigned int
73cifs_read_data_offset(char *buf)
74{
75 READ_RSP *rsp = (READ_RSP *)buf;
76 return le16_to_cpu(rsp->DataOffset);
77}
78
79static unsigned int
80cifs_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
89static struct mid_q_entry *
90cifs_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(&server->mid_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(&server->mid_lock);
102 return mid;
103 }
104 }
105 spin_unlock(&server->mid_lock);
106 return NULL;
107}
108
109static void
110cifs_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
120static void
121cifs_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
129static int *
130cifs_get_credits_field(struct TCP_Server_Info *server, const int optype)
131{
132 return &server->credits;
133}
134
135static unsigned int
136cifs_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 */
162static __u64
163cifs_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(&server->mid_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(&server->mid_lock);
229
230 if (reconnect) {
231 cifs_signal_cifsd_for_reconnect(server, false);
232 }
233
234 return mid;
235}
236
237/*
238 return codes:
239 0 not a transact2, or all data present
240 >0 transact2 with that much data missing
241 -EINVAL invalid transact2
242 */
243static int
244check2ndT2(char *buf)
245{
246 struct smb_hdr *pSMB = (struct smb_hdr *)buf;
247 struct smb_t2_rsp *pSMBt;
248 int remaining;
249 __u16 total_data_size, data_in_this_rsp;
250
251 if (pSMB->Command != SMB_COM_TRANSACTION2)
252 return 0;
253
254 /* check for plausible wct, bcc and t2 data and parm sizes */
255 /* check for parm and data offset going beyond end of smb */
256 if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */
257 cifs_dbg(FYI, "Invalid transact2 word count\n");
258 return -EINVAL;
259 }
260
261 pSMBt = (struct smb_t2_rsp *)pSMB;
262
263 total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
264 data_in_this_rsp = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
265
266 if (total_data_size == data_in_this_rsp)
267 return 0;
268 else if (total_data_size < data_in_this_rsp) {
269 cifs_dbg(FYI, "total data %d smaller than data in frame %d\n",
270 total_data_size, data_in_this_rsp);
271 return -EINVAL;
272 }
273
274 remaining = total_data_size - data_in_this_rsp;
275
276 cifs_dbg(FYI, "missing %d bytes from transact2, check next response\n",
277 remaining);
278 if (total_data_size > CIFSMaxBufSize) {
279 cifs_dbg(VFS, "TotalDataSize %d is over maximum buffer %d\n",
280 total_data_size, CIFSMaxBufSize);
281 return -EINVAL;
282 }
283 return remaining;
284}
285
286static int
287coalesce_t2(char *second_buf, struct smb_hdr *target_hdr)
288{
289 struct smb_t2_rsp *pSMBs = (struct smb_t2_rsp *)second_buf;
290 struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)target_hdr;
291 char *data_area_of_tgt;
292 char *data_area_of_src;
293 int remaining;
294 unsigned int byte_count, total_in_tgt;
295 __u16 tgt_total_cnt, src_total_cnt, total_in_src;
296
297 src_total_cnt = get_unaligned_le16(&pSMBs->t2_rsp.TotalDataCount);
298 tgt_total_cnt = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
299
300 if (tgt_total_cnt != src_total_cnt)
301 cifs_dbg(FYI, "total data count of primary and secondary t2 differ source=%hu target=%hu\n",
302 src_total_cnt, tgt_total_cnt);
303
304 total_in_tgt = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
305
306 remaining = tgt_total_cnt - total_in_tgt;
307
308 if (remaining < 0) {
309 cifs_dbg(FYI, "Server sent too much data. tgt_total_cnt=%hu total_in_tgt=%u\n",
310 tgt_total_cnt, total_in_tgt);
311 return -EPROTO;
312 }
313
314 if (remaining == 0) {
315 /* nothing to do, ignore */
316 cifs_dbg(FYI, "no more data remains\n");
317 return 0;
318 }
319
320 total_in_src = get_unaligned_le16(&pSMBs->t2_rsp.DataCount);
321 if (remaining < total_in_src)
322 cifs_dbg(FYI, "transact2 2nd response contains too much data\n");
323
324 /* find end of first SMB data area */
325 data_area_of_tgt = (char *)&pSMBt->hdr.Protocol +
326 get_unaligned_le16(&pSMBt->t2_rsp.DataOffset);
327
328 /* validate target area */
329 data_area_of_src = (char *)&pSMBs->hdr.Protocol +
330 get_unaligned_le16(&pSMBs->t2_rsp.DataOffset);
331
332 data_area_of_tgt += total_in_tgt;
333
334 total_in_tgt += total_in_src;
335 /* is the result too big for the field? */
336 if (total_in_tgt > USHRT_MAX) {
337 cifs_dbg(FYI, "coalesced DataCount too large (%u)\n",
338 total_in_tgt);
339 return -EPROTO;
340 }
341 put_unaligned_le16(total_in_tgt, &pSMBt->t2_rsp.DataCount);
342
343 /* fix up the BCC */
344 byte_count = get_bcc(target_hdr);
345 byte_count += total_in_src;
346 /* is the result too big for the field? */
347 if (byte_count > USHRT_MAX) {
348 cifs_dbg(FYI, "coalesced BCC too large (%u)\n", byte_count);
349 return -EPROTO;
350 }
351 put_bcc(byte_count, target_hdr);
352
353 byte_count = be32_to_cpu(target_hdr->smb_buf_length);
354 byte_count += total_in_src;
355 /* don't allow buffer to overflow */
356 if (byte_count > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) {
357 cifs_dbg(FYI, "coalesced BCC exceeds buffer size (%u)\n",
358 byte_count);
359 return -ENOBUFS;
360 }
361 target_hdr->smb_buf_length = cpu_to_be32(byte_count);
362
363 /* copy second buffer into end of first buffer */
364 memcpy(data_area_of_tgt, data_area_of_src, total_in_src);
365
366 if (remaining != total_in_src) {
367 /* more responses to go */
368 cifs_dbg(FYI, "waiting for more secondary responses\n");
369 return 1;
370 }
371
372 /* we are done */
373 cifs_dbg(FYI, "found the last secondary response\n");
374 return 0;
375}
376
377static void
378cifs_downgrade_oplock(struct TCP_Server_Info *server,
379 struct cifsInodeInfo *cinode, __u32 oplock,
380 unsigned int epoch, bool *purge_cache)
381{
382 cifs_set_oplock_level(cinode, oplock);
383}
384
385static bool
386cifs_check_trans2(struct mid_q_entry *mid, struct TCP_Server_Info *server,
387 char *buf, int malformed)
388{
389 if (malformed)
390 return false;
391 if (check2ndT2(buf) <= 0)
392 return false;
393 mid->multiRsp = true;
394 if (mid->resp_buf) {
395 /* merge response - fix up 1st*/
396 malformed = coalesce_t2(buf, mid->resp_buf);
397 if (malformed > 0)
398 return true;
399 /* All parts received or packet is malformed. */
400 mid->multiEnd = true;
401 dequeue_mid(mid, malformed);
402 return true;
403 }
404 if (!server->large_buf) {
405 /*FIXME: switch to already allocated largebuf?*/
406 cifs_dbg(VFS, "1st trans2 resp needs bigbuf\n");
407 } else {
408 /* Have first buffer */
409 mid->resp_buf = buf;
410 mid->large_buf = true;
411 server->bigbuf = NULL;
412 }
413 return true;
414}
415
416static bool
417cifs_need_neg(struct TCP_Server_Info *server)
418{
419 return server->maxBuf == 0;
420}
421
422static int
423cifs_negotiate(const unsigned int xid,
424 struct cifs_ses *ses,
425 struct TCP_Server_Info *server)
426{
427 int rc;
428 rc = CIFSSMBNegotiate(xid, ses, server);
429 if (rc == -EAGAIN) {
430 /* retry only once on 1st time connection */
431 set_credits(server, 1);
432 rc = CIFSSMBNegotiate(xid, ses, server);
433 if (rc == -EAGAIN)
434 rc = -EHOSTDOWN;
435 }
436 return rc;
437}
438
439static unsigned int
440cifs_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
441{
442 __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
443 struct TCP_Server_Info *server = tcon->ses->server;
444 unsigned int wsize;
445
446 /* start with specified wsize, or default */
447 if (ctx->wsize)
448 wsize = ctx->wsize;
449 else if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
450 wsize = CIFS_DEFAULT_IOSIZE;
451 else
452 wsize = CIFS_DEFAULT_NON_POSIX_WSIZE;
453
454 /* can server support 24-bit write sizes? (via UNIX extensions) */
455 if (!tcon->unix_ext || !(unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
456 wsize = min_t(unsigned int, wsize, CIFS_MAX_RFC1002_WSIZE);
457
458 /*
459 * no CAP_LARGE_WRITE_X or is signing enabled without CAP_UNIX set?
460 * Limit it to max buffer offered by the server, minus the size of the
461 * WRITEX header, not including the 4 byte RFC1001 length.
462 */
463 if (!(server->capabilities & CAP_LARGE_WRITE_X) ||
464 (!(server->capabilities & CAP_UNIX) && server->sign))
465 wsize = min_t(unsigned int, wsize,
466 server->maxBuf - sizeof(WRITE_REQ) + 4);
467
468 /* hard limit of CIFS_MAX_WSIZE */
469 wsize = min_t(unsigned int, wsize, CIFS_MAX_WSIZE);
470
471 return wsize;
472}
473
474static unsigned int
475cifs_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
476{
477 __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
478 struct TCP_Server_Info *server = tcon->ses->server;
479 unsigned int rsize, defsize;
480
481 /*
482 * Set default value...
483 *
484 * HACK alert! Ancient servers have very small buffers. Even though
485 * MS-CIFS indicates that servers are only limited by the client's
486 * bufsize for reads, testing against win98se shows that it throws
487 * INVALID_PARAMETER errors if you try to request too large a read.
488 * OS/2 just sends back short reads.
489 *
490 * If the server doesn't advertise CAP_LARGE_READ_X, then assume that
491 * it can't handle a read request larger than its MaxBufferSize either.
492 */
493 if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_READ_CAP))
494 defsize = CIFS_DEFAULT_IOSIZE;
495 else if (server->capabilities & CAP_LARGE_READ_X)
496 defsize = CIFS_DEFAULT_NON_POSIX_RSIZE;
497 else
498 defsize = server->maxBuf - sizeof(READ_RSP);
499
500 rsize = ctx->rsize ? ctx->rsize : defsize;
501
502 /*
503 * no CAP_LARGE_READ_X? Then MS-CIFS states that we must limit this to
504 * the client's MaxBufferSize.
505 */
506 if (!(server->capabilities & CAP_LARGE_READ_X))
507 rsize = min_t(unsigned int, CIFSMaxBufSize, rsize);
508
509 /* hard limit of CIFS_MAX_RSIZE */
510 rsize = min_t(unsigned int, rsize, CIFS_MAX_RSIZE);
511
512 return rsize;
513}
514
515static void
516cifs_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
517 struct cifs_sb_info *cifs_sb)
518{
519 CIFSSMBQFSDeviceInfo(xid, tcon);
520 CIFSSMBQFSAttributeInfo(xid, tcon);
521}
522
523static int
524cifs_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
525 struct cifs_sb_info *cifs_sb, const char *full_path)
526{
527 int rc;
528 FILE_ALL_INFO *file_info;
529
530 file_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
531 if (file_info == NULL)
532 return -ENOMEM;
533
534 rc = CIFSSMBQPathInfo(xid, tcon, full_path, file_info,
535 0 /* not legacy */, cifs_sb->local_nls,
536 cifs_remap(cifs_sb));
537
538 if (rc == -EOPNOTSUPP || rc == -EINVAL)
539 rc = SMBQueryInformation(xid, tcon, full_path, file_info,
540 cifs_sb->local_nls, cifs_remap(cifs_sb));
541 kfree(file_info);
542 return rc;
543}
544
545static int cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
546 struct cifs_sb_info *cifs_sb, const char *full_path,
547 struct cifs_open_info_data *data, bool *adjustTZ, bool *symlink)
548{
549 int rc;
550 FILE_ALL_INFO fi = {};
551
552 *symlink = false;
553
554 /* could do find first instead but this returns more info */
555 rc = CIFSSMBQPathInfo(xid, tcon, full_path, &fi, 0 /* not legacy */, cifs_sb->local_nls,
556 cifs_remap(cifs_sb));
557 /*
558 * BB optimize code so we do not make the above call when server claims
559 * no NT SMB support and the above call failed at least once - set flag
560 * in tcon or mount.
561 */
562 if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
563 rc = SMBQueryInformation(xid, tcon, full_path, &fi, cifs_sb->local_nls,
564 cifs_remap(cifs_sb));
565 *adjustTZ = true;
566 }
567
568 if (!rc) {
569 int tmprc;
570 int oplock = 0;
571 struct cifs_fid fid;
572 struct cifs_open_parms oparms;
573
574 move_cifs_info_to_smb2(&data->fi, &fi);
575
576 if (!(le32_to_cpu(fi.Attributes) & ATTR_REPARSE))
577 return 0;
578
579 oparms.tcon = tcon;
580 oparms.cifs_sb = cifs_sb;
581 oparms.desired_access = FILE_READ_ATTRIBUTES;
582 oparms.create_options = cifs_create_options(cifs_sb, 0);
583 oparms.disposition = FILE_OPEN;
584 oparms.path = full_path;
585 oparms.fid = &fid;
586 oparms.reconnect = false;
587
588 /* Need to check if this is a symbolic link or not */
589 tmprc = CIFS_open(xid, &oparms, &oplock, NULL);
590 if (tmprc == -EOPNOTSUPP)
591 *symlink = true;
592 else if (tmprc == 0)
593 CIFSSMBClose(xid, tcon, fid.netfid);
594 }
595
596 return rc;
597}
598
599static int cifs_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
600 struct cifs_sb_info *cifs_sb, const char *full_path,
601 u64 *uniqueid, struct cifs_open_info_data *unused)
602{
603 /*
604 * We can not use the IndexNumber field by default from Windows or
605 * Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA
606 * CIFS spec claims that this value is unique within the scope of a
607 * share, and the windows docs hint that it's actually unique
608 * per-machine.
609 *
610 * There may be higher info levels that work but are there Windows
611 * server or network appliances for which IndexNumber field is not
612 * guaranteed unique?
613 */
614 return CIFSGetSrvInodeNumber(xid, tcon, full_path, uniqueid,
615 cifs_sb->local_nls,
616 cifs_remap(cifs_sb));
617}
618
619static int cifs_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
620 struct cifsFileInfo *cfile, struct cifs_open_info_data *data)
621{
622 int rc;
623 FILE_ALL_INFO fi = {};
624
625 if (cfile->symlink_target) {
626 data->symlink_target = kstrdup(cfile->symlink_target, GFP_KERNEL);
627 if (!data->symlink_target)
628 return -ENOMEM;
629 }
630
631 rc = CIFSSMBQFileInfo(xid, tcon, cfile->fid.netfid, &fi);
632 if (!rc)
633 move_cifs_info_to_smb2(&data->fi, &fi);
634 return rc;
635}
636
637static void
638cifs_clear_stats(struct cifs_tcon *tcon)
639{
640 atomic_set(&tcon->stats.cifs_stats.num_writes, 0);
641 atomic_set(&tcon->stats.cifs_stats.num_reads, 0);
642 atomic_set(&tcon->stats.cifs_stats.num_flushes, 0);
643 atomic_set(&tcon->stats.cifs_stats.num_oplock_brks, 0);
644 atomic_set(&tcon->stats.cifs_stats.num_opens, 0);
645 atomic_set(&tcon->stats.cifs_stats.num_posixopens, 0);
646 atomic_set(&tcon->stats.cifs_stats.num_posixmkdirs, 0);
647 atomic_set(&tcon->stats.cifs_stats.num_closes, 0);
648 atomic_set(&tcon->stats.cifs_stats.num_deletes, 0);
649 atomic_set(&tcon->stats.cifs_stats.num_mkdirs, 0);
650 atomic_set(&tcon->stats.cifs_stats.num_rmdirs, 0);
651 atomic_set(&tcon->stats.cifs_stats.num_renames, 0);
652 atomic_set(&tcon->stats.cifs_stats.num_t2renames, 0);
653 atomic_set(&tcon->stats.cifs_stats.num_ffirst, 0);
654 atomic_set(&tcon->stats.cifs_stats.num_fnext, 0);
655 atomic_set(&tcon->stats.cifs_stats.num_fclose, 0);
656 atomic_set(&tcon->stats.cifs_stats.num_hardlinks, 0);
657 atomic_set(&tcon->stats.cifs_stats.num_symlinks, 0);
658 atomic_set(&tcon->stats.cifs_stats.num_locks, 0);
659 atomic_set(&tcon->stats.cifs_stats.num_acl_get, 0);
660 atomic_set(&tcon->stats.cifs_stats.num_acl_set, 0);
661}
662
663static void
664cifs_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
665{
666 seq_printf(m, " Oplocks breaks: %d",
667 atomic_read(&tcon->stats.cifs_stats.num_oplock_brks));
668 seq_printf(m, "\nReads: %d Bytes: %llu",
669 atomic_read(&tcon->stats.cifs_stats.num_reads),
670 (long long)(tcon->bytes_read));
671 seq_printf(m, "\nWrites: %d Bytes: %llu",
672 atomic_read(&tcon->stats.cifs_stats.num_writes),
673 (long long)(tcon->bytes_written));
674 seq_printf(m, "\nFlushes: %d",
675 atomic_read(&tcon->stats.cifs_stats.num_flushes));
676 seq_printf(m, "\nLocks: %d HardLinks: %d Symlinks: %d",
677 atomic_read(&tcon->stats.cifs_stats.num_locks),
678 atomic_read(&tcon->stats.cifs_stats.num_hardlinks),
679 atomic_read(&tcon->stats.cifs_stats.num_symlinks));
680 seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
681 atomic_read(&tcon->stats.cifs_stats.num_opens),
682 atomic_read(&tcon->stats.cifs_stats.num_closes),
683 atomic_read(&tcon->stats.cifs_stats.num_deletes));
684 seq_printf(m, "\nPosix Opens: %d Posix Mkdirs: %d",
685 atomic_read(&tcon->stats.cifs_stats.num_posixopens),
686 atomic_read(&tcon->stats.cifs_stats.num_posixmkdirs));
687 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
688 atomic_read(&tcon->stats.cifs_stats.num_mkdirs),
689 atomic_read(&tcon->stats.cifs_stats.num_rmdirs));
690 seq_printf(m, "\nRenames: %d T2 Renames %d",
691 atomic_read(&tcon->stats.cifs_stats.num_renames),
692 atomic_read(&tcon->stats.cifs_stats.num_t2renames));
693 seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
694 atomic_read(&tcon->stats.cifs_stats.num_ffirst),
695 atomic_read(&tcon->stats.cifs_stats.num_fnext),
696 atomic_read(&tcon->stats.cifs_stats.num_fclose));
697}
698
699static void
700cifs_mkdir_setinfo(struct inode *inode, const char *full_path,
701 struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
702 const unsigned int xid)
703{
704 FILE_BASIC_INFO info;
705 struct cifsInodeInfo *cifsInode;
706 u32 dosattrs;
707 int rc;
708
709 memset(&info, 0, sizeof(info));
710 cifsInode = CIFS_I(inode);
711 dosattrs = cifsInode->cifsAttrs|ATTR_READONLY;
712 info.Attributes = cpu_to_le32(dosattrs);
713 rc = CIFSSMBSetPathInfo(xid, tcon, full_path, &info, cifs_sb->local_nls,
714 cifs_sb);
715 if (rc == 0)
716 cifsInode->cifsAttrs = dosattrs;
717}
718
719static int cifs_open_file(const unsigned int xid, struct cifs_open_parms *oparms, __u32 *oplock,
720 void *buf)
721{
722 struct cifs_open_info_data *data = buf;
723 FILE_ALL_INFO fi = {};
724 int rc;
725
726 if (!(oparms->tcon->ses->capabilities & CAP_NT_SMBS))
727 rc = SMBLegacyOpen(xid, oparms->tcon, oparms->path,
728 oparms->disposition,
729 oparms->desired_access,
730 oparms->create_options,
731 &oparms->fid->netfid, oplock, &fi,
732 oparms->cifs_sb->local_nls,
733 cifs_remap(oparms->cifs_sb));
734 else
735 rc = CIFS_open(xid, oparms, oplock, &fi);
736
737 if (!rc && data)
738 move_cifs_info_to_smb2(&data->fi, &fi);
739
740 return rc;
741}
742
743static void
744cifs_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
745{
746 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
747 cfile->fid.netfid = fid->netfid;
748 cifs_set_oplock_level(cinode, oplock);
749 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
750}
751
752static void
753cifs_close_file(const unsigned int xid, struct cifs_tcon *tcon,
754 struct cifs_fid *fid)
755{
756 CIFSSMBClose(xid, tcon, fid->netfid);
757}
758
759static int
760cifs_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
761 struct cifs_fid *fid)
762{
763 return CIFSSMBFlush(xid, tcon, fid->netfid);
764}
765
766static int
767cifs_sync_read(const unsigned int xid, struct cifs_fid *pfid,
768 struct cifs_io_parms *parms, unsigned int *bytes_read,
769 char **buf, int *buf_type)
770{
771 parms->netfid = pfid->netfid;
772 return CIFSSMBRead(xid, parms, bytes_read, buf, buf_type);
773}
774
775static int
776cifs_sync_write(const unsigned int xid, struct cifs_fid *pfid,
777 struct cifs_io_parms *parms, unsigned int *written,
778 struct kvec *iov, unsigned long nr_segs)
779{
780
781 parms->netfid = pfid->netfid;
782 return CIFSSMBWrite2(xid, parms, written, iov, nr_segs);
783}
784
785static int
786smb_set_file_info(struct inode *inode, const char *full_path,
787 FILE_BASIC_INFO *buf, const unsigned int xid)
788{
789 int oplock = 0;
790 int rc;
791 __u32 netpid;
792 struct cifs_fid fid;
793 struct cifs_open_parms oparms;
794 struct cifsFileInfo *open_file;
795 struct cifsInodeInfo *cinode = CIFS_I(inode);
796 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
797 struct tcon_link *tlink = NULL;
798 struct cifs_tcon *tcon;
799
800 /* if the file is already open for write, just use that fileid */
801 open_file = find_writable_file(cinode, FIND_WR_FSUID_ONLY);
802 if (open_file) {
803 fid.netfid = open_file->fid.netfid;
804 netpid = open_file->pid;
805 tcon = tlink_tcon(open_file->tlink);
806 goto set_via_filehandle;
807 }
808
809 tlink = cifs_sb_tlink(cifs_sb);
810 if (IS_ERR(tlink)) {
811 rc = PTR_ERR(tlink);
812 tlink = NULL;
813 goto out;
814 }
815 tcon = tlink_tcon(tlink);
816
817 rc = CIFSSMBSetPathInfo(xid, tcon, full_path, buf, cifs_sb->local_nls,
818 cifs_sb);
819 if (rc == 0) {
820 cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
821 goto out;
822 } else if (rc != -EOPNOTSUPP && rc != -EINVAL) {
823 goto out;
824 }
825
826 oparms.tcon = tcon;
827 oparms.cifs_sb = cifs_sb;
828 oparms.desired_access = SYNCHRONIZE | FILE_WRITE_ATTRIBUTES;
829 oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
830 oparms.disposition = FILE_OPEN;
831 oparms.path = full_path;
832 oparms.fid = &fid;
833 oparms.reconnect = false;
834
835 cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n");
836 rc = CIFS_open(xid, &oparms, &oplock, NULL);
837 if (rc != 0) {
838 if (rc == -EIO)
839 rc = -EINVAL;
840 goto out;
841 }
842
843 netpid = current->tgid;
844
845set_via_filehandle:
846 rc = CIFSSMBSetFileInfo(xid, tcon, buf, fid.netfid, netpid);
847 if (!rc)
848 cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
849
850 if (open_file == NULL)
851 CIFSSMBClose(xid, tcon, fid.netfid);
852 else
853 cifsFileInfo_put(open_file);
854out:
855 if (tlink != NULL)
856 cifs_put_tlink(tlink);
857 return rc;
858}
859
860static int
861cifs_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
862 struct cifsFileInfo *cfile)
863{
864 return CIFSSMB_set_compression(xid, tcon, cfile->fid.netfid);
865}
866
867static int
868cifs_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
869 const char *path, struct cifs_sb_info *cifs_sb,
870 struct cifs_fid *fid, __u16 search_flags,
871 struct cifs_search_info *srch_inf)
872{
873 int rc;
874
875 rc = CIFSFindFirst(xid, tcon, path, cifs_sb,
876 &fid->netfid, search_flags, srch_inf, true);
877 if (rc)
878 cifs_dbg(FYI, "find first failed=%d\n", rc);
879 return rc;
880}
881
882static int
883cifs_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
884 struct cifs_fid *fid, __u16 search_flags,
885 struct cifs_search_info *srch_inf)
886{
887 return CIFSFindNext(xid, tcon, fid->netfid, search_flags, srch_inf);
888}
889
890static int
891cifs_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
892 struct cifs_fid *fid)
893{
894 return CIFSFindClose(xid, tcon, fid->netfid);
895}
896
897static int
898cifs_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
899 struct cifsInodeInfo *cinode)
900{
901 return CIFSSMBLock(0, tcon, fid->netfid, current->tgid, 0, 0, 0, 0,
902 LOCKING_ANDX_OPLOCK_RELEASE, false,
903 CIFS_CACHE_READ(cinode) ? 1 : 0);
904}
905
906static int
907cifs_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
908 struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
909{
910 int rc = -EOPNOTSUPP;
911
912 buf->f_type = CIFS_SUPER_MAGIC;
913
914 /*
915 * We could add a second check for a QFS Unix capability bit
916 */
917 if ((tcon->ses->capabilities & CAP_UNIX) &&
918 (CIFS_POSIX_EXTENSIONS & le64_to_cpu(tcon->fsUnixInfo.Capability)))
919 rc = CIFSSMBQFSPosixInfo(xid, tcon, buf);
920
921 /*
922 * Only need to call the old QFSInfo if failed on newer one,
923 * e.g. by OS/2.
924 **/
925 if (rc && (tcon->ses->capabilities & CAP_NT_SMBS))
926 rc = CIFSSMBQFSInfo(xid, tcon, buf);
927
928 /*
929 * Some old Windows servers also do not support level 103, retry with
930 * older level one if old server failed the previous call or we
931 * bypassed it because we detected that this was an older LANMAN sess
932 */
933 if (rc)
934 rc = SMBOldQFSInfo(xid, tcon, buf);
935 return rc;
936}
937
938static int
939cifs_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
940 __u64 length, __u32 type, int lock, int unlock, bool wait)
941{
942 return CIFSSMBLock(xid, tlink_tcon(cfile->tlink), cfile->fid.netfid,
943 current->tgid, length, offset, unlock, lock,
944 (__u8)type, wait, 0);
945}
946
947static int
948cifs_unix_dfs_readlink(const unsigned int xid, struct cifs_tcon *tcon,
949 const unsigned char *searchName, char **symlinkinfo,
950 const struct nls_table *nls_codepage)
951{
952#ifdef CONFIG_CIFS_DFS_UPCALL
953 int rc;
954 struct dfs_info3_param referral = {0};
955
956 rc = get_dfs_path(xid, tcon->ses, searchName, nls_codepage, &referral,
957 0);
958
959 if (!rc) {
960 *symlinkinfo = kstrdup(referral.node_name, GFP_KERNEL);
961 free_dfs_info_param(&referral);
962 if (!*symlinkinfo)
963 rc = -ENOMEM;
964 }
965 return rc;
966#else /* No DFS support */
967 return -EREMOTE;
968#endif
969}
970
971static int
972cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
973 struct cifs_sb_info *cifs_sb, const char *full_path,
974 char **target_path, bool is_reparse_point)
975{
976 int rc;
977 int oplock = 0;
978 struct cifs_fid fid;
979 struct cifs_open_parms oparms;
980
981 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
982
983 if (is_reparse_point) {
984 cifs_dbg(VFS, "reparse points not handled for SMB1 symlinks\n");
985 return -EOPNOTSUPP;
986 }
987
988 /* Check for unix extensions */
989 if (cap_unix(tcon->ses)) {
990 rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, target_path,
991 cifs_sb->local_nls,
992 cifs_remap(cifs_sb));
993 if (rc == -EREMOTE)
994 rc = cifs_unix_dfs_readlink(xid, tcon, full_path,
995 target_path,
996 cifs_sb->local_nls);
997
998 goto out;
999 }
1000
1001 oparms.tcon = tcon;
1002 oparms.cifs_sb = cifs_sb;
1003 oparms.desired_access = FILE_READ_ATTRIBUTES;
1004 oparms.create_options = cifs_create_options(cifs_sb,
1005 OPEN_REPARSE_POINT);
1006 oparms.disposition = FILE_OPEN;
1007 oparms.path = full_path;
1008 oparms.fid = &fid;
1009 oparms.reconnect = false;
1010
1011 rc = CIFS_open(xid, &oparms, &oplock, NULL);
1012 if (rc)
1013 goto out;
1014
1015 rc = CIFSSMBQuerySymLink(xid, tcon, fid.netfid, target_path,
1016 cifs_sb->local_nls);
1017 if (rc)
1018 goto out_close;
1019
1020 convert_delimiter(*target_path, '/');
1021out_close:
1022 CIFSSMBClose(xid, tcon, fid.netfid);
1023out:
1024 if (!rc)
1025 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
1026 return rc;
1027}
1028
1029static bool
1030cifs_is_read_op(__u32 oplock)
1031{
1032 return oplock == OPLOCK_READ;
1033}
1034
1035static unsigned int
1036cifs_wp_retry_size(struct inode *inode)
1037{
1038 return CIFS_SB(inode->i_sb)->ctx->wsize;
1039}
1040
1041static bool
1042cifs_dir_needs_close(struct cifsFileInfo *cfile)
1043{
1044 return !cfile->srch_inf.endOfSearch && !cfile->invalidHandle;
1045}
1046
1047static bool
1048cifs_can_echo(struct TCP_Server_Info *server)
1049{
1050 if (server->tcpStatus == CifsGood)
1051 return true;
1052
1053 return false;
1054}
1055
1056static int
1057cifs_make_node(unsigned int xid, struct inode *inode,
1058 struct dentry *dentry, struct cifs_tcon *tcon,
1059 const char *full_path, umode_t mode, dev_t dev)
1060{
1061 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1062 struct inode *newinode = NULL;
1063 int rc = -EPERM;
1064 struct cifs_open_info_data buf = {};
1065 struct cifs_io_parms io_parms;
1066 __u32 oplock = 0;
1067 struct cifs_fid fid;
1068 struct cifs_open_parms oparms;
1069 unsigned int bytes_written;
1070 struct win_dev *pdev;
1071 struct kvec iov[2];
1072
1073 if (tcon->unix_ext) {
1074 /*
1075 * SMB1 Unix Extensions: requires server support but
1076 * works with all special files
1077 */
1078 struct cifs_unix_set_info_args args = {
1079 .mode = mode & ~current_umask(),
1080 .ctime = NO_CHANGE_64,
1081 .atime = NO_CHANGE_64,
1082 .mtime = NO_CHANGE_64,
1083 .device = dev,
1084 };
1085 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
1086 args.uid = current_fsuid();
1087 args.gid = current_fsgid();
1088 } else {
1089 args.uid = INVALID_UID; /* no change */
1090 args.gid = INVALID_GID; /* no change */
1091 }
1092 rc = CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
1093 cifs_sb->local_nls,
1094 cifs_remap(cifs_sb));
1095 if (rc)
1096 return rc;
1097
1098 rc = cifs_get_inode_info_unix(&newinode, full_path,
1099 inode->i_sb, xid);
1100
1101 if (rc == 0)
1102 d_instantiate(dentry, newinode);
1103 return rc;
1104 }
1105
1106 /*
1107 * SMB1 SFU emulation: should work with all servers, but only
1108 * support block and char device (no socket & fifo)
1109 */
1110 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL))
1111 return rc;
1112
1113 if (!S_ISCHR(mode) && !S_ISBLK(mode))
1114 return rc;
1115
1116 cifs_dbg(FYI, "sfu compat create special file\n");
1117
1118 oparms.tcon = tcon;
1119 oparms.cifs_sb = cifs_sb;
1120 oparms.desired_access = GENERIC_WRITE;
1121 oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR |
1122 CREATE_OPTION_SPECIAL);
1123 oparms.disposition = FILE_CREATE;
1124 oparms.path = full_path;
1125 oparms.fid = &fid;
1126 oparms.reconnect = false;
1127
1128 if (tcon->ses->server->oplocks)
1129 oplock = REQ_OPLOCK;
1130 else
1131 oplock = 0;
1132 rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, &buf);
1133 if (rc)
1134 return rc;
1135
1136 /*
1137 * BB Do not bother to decode buf since no local inode yet to put
1138 * timestamps in, but we can reuse it safely.
1139 */
1140
1141 pdev = (struct win_dev *)&buf.fi;
1142 io_parms.pid = current->tgid;
1143 io_parms.tcon = tcon;
1144 io_parms.offset = 0;
1145 io_parms.length = sizeof(struct win_dev);
1146 iov[1].iov_base = &buf.fi;
1147 iov[1].iov_len = sizeof(struct win_dev);
1148 if (S_ISCHR(mode)) {
1149 memcpy(pdev->type, "IntxCHR", 8);
1150 pdev->major = cpu_to_le64(MAJOR(dev));
1151 pdev->minor = cpu_to_le64(MINOR(dev));
1152 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
1153 &bytes_written, iov, 1);
1154 } else if (S_ISBLK(mode)) {
1155 memcpy(pdev->type, "IntxBLK", 8);
1156 pdev->major = cpu_to_le64(MAJOR(dev));
1157 pdev->minor = cpu_to_le64(MINOR(dev));
1158 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
1159 &bytes_written, iov, 1);
1160 }
1161 tcon->ses->server->ops->close(xid, tcon, &fid);
1162 d_drop(dentry);
1163
1164 /* FIXME: add code here to set EAs */
1165
1166 cifs_free_open_info(&buf);
1167 return rc;
1168}
1169
1170
1171
1172struct smb_version_operations smb1_operations = {
1173 .send_cancel = send_nt_cancel,
1174 .compare_fids = cifs_compare_fids,
1175 .setup_request = cifs_setup_request,
1176 .setup_async_request = cifs_setup_async_request,
1177 .check_receive = cifs_check_receive,
1178 .add_credits = cifs_add_credits,
1179 .set_credits = cifs_set_credits,
1180 .get_credits_field = cifs_get_credits_field,
1181 .get_credits = cifs_get_credits,
1182 .wait_mtu_credits = cifs_wait_mtu_credits,
1183 .get_next_mid = cifs_get_next_mid,
1184 .read_data_offset = cifs_read_data_offset,
1185 .read_data_length = cifs_read_data_length,
1186 .map_error = map_smb_to_linux_error,
1187 .find_mid = cifs_find_mid,
1188 .check_message = checkSMB,
1189 .dump_detail = cifs_dump_detail,
1190 .clear_stats = cifs_clear_stats,
1191 .print_stats = cifs_print_stats,
1192 .is_oplock_break = is_valid_oplock_break,
1193 .downgrade_oplock = cifs_downgrade_oplock,
1194 .check_trans2 = cifs_check_trans2,
1195 .need_neg = cifs_need_neg,
1196 .negotiate = cifs_negotiate,
1197 .negotiate_wsize = cifs_negotiate_wsize,
1198 .negotiate_rsize = cifs_negotiate_rsize,
1199 .sess_setup = CIFS_SessSetup,
1200 .logoff = CIFSSMBLogoff,
1201 .tree_connect = CIFSTCon,
1202 .tree_disconnect = CIFSSMBTDis,
1203 .get_dfs_refer = CIFSGetDFSRefer,
1204 .qfs_tcon = cifs_qfs_tcon,
1205 .is_path_accessible = cifs_is_path_accessible,
1206 .can_echo = cifs_can_echo,
1207 .query_path_info = cifs_query_path_info,
1208 .query_file_info = cifs_query_file_info,
1209 .get_srv_inum = cifs_get_srv_inum,
1210 .set_path_size = CIFSSMBSetEOF,
1211 .set_file_size = CIFSSMBSetFileSize,
1212 .set_file_info = smb_set_file_info,
1213 .set_compression = cifs_set_compression,
1214 .echo = CIFSSMBEcho,
1215 .mkdir = CIFSSMBMkDir,
1216 .mkdir_setinfo = cifs_mkdir_setinfo,
1217 .rmdir = CIFSSMBRmDir,
1218 .unlink = CIFSSMBDelFile,
1219 .rename_pending_delete = cifs_rename_pending_delete,
1220 .rename = CIFSSMBRename,
1221 .create_hardlink = CIFSCreateHardLink,
1222 .query_symlink = cifs_query_symlink,
1223 .open = cifs_open_file,
1224 .set_fid = cifs_set_fid,
1225 .close = cifs_close_file,
1226 .flush = cifs_flush_file,
1227 .async_readv = cifs_async_readv,
1228 .async_writev = cifs_async_writev,
1229 .sync_read = cifs_sync_read,
1230 .sync_write = cifs_sync_write,
1231 .query_dir_first = cifs_query_dir_first,
1232 .query_dir_next = cifs_query_dir_next,
1233 .close_dir = cifs_close_dir,
1234 .calc_smb_size = smbCalcSize,
1235 .oplock_response = cifs_oplock_response,
1236 .queryfs = cifs_queryfs,
1237 .mand_lock = cifs_mand_lock,
1238 .mand_unlock_range = cifs_unlock_range,
1239 .push_mand_locks = cifs_push_mandatory_locks,
1240 .query_mf_symlink = cifs_query_mf_symlink,
1241 .create_mf_symlink = cifs_create_mf_symlink,
1242 .is_read_op = cifs_is_read_op,
1243 .wp_retry_size = cifs_wp_retry_size,
1244 .dir_needs_close = cifs_dir_needs_close,
1245 .select_sectype = cifs_select_sectype,
1246#ifdef CONFIG_CIFS_XATTR
1247 .query_all_EAs = CIFSSMBQAllEAs,
1248 .set_EA = CIFSSMBSetEA,
1249#endif /* CIFS_XATTR */
1250 .get_acl = get_cifs_acl,
1251 .get_acl_by_fid = get_cifs_acl_by_fid,
1252 .set_acl = set_cifs_acl,
1253 .make_node = cifs_make_node,
1254};
1255
1256struct smb_version_values smb1_values = {
1257 .version_string = SMB1_VERSION_STRING,
1258 .protocol_id = SMB10_PROT_ID,
1259 .large_lock_type = LOCKING_ANDX_LARGE_FILES,
1260 .exclusive_lock_type = 0,
1261 .shared_lock_type = LOCKING_ANDX_SHARED_LOCK,
1262 .unlock_lock_type = 0,
1263 .header_preamble_size = 4,
1264 .header_size = sizeof(struct smb_hdr),
1265 .max_header_size = MAX_CIFS_HDR_SIZE,
1266 .read_rsp_size = sizeof(READ_RSP),
1267 .lock_cmd = cpu_to_le16(SMB_COM_LOCKING_ANDX),
1268 .cap_unix = CAP_UNIX,
1269 .cap_nt_find = CAP_NT_SMBS | CAP_NT_FIND,
1270 .cap_large_files = CAP_LARGE_FILES,
1271 .signing_enabled = SECMODE_SIGN_ENABLED,
1272 .signing_required = SECMODE_SIGN_REQUIRED,
1273};
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#include "fs_context.h"
16
17/*
18 * An NT cancel request header looks just like the original request except:
19 *
20 * The Command is SMB_COM_NT_CANCEL
21 * The WordCount is zeroed out
22 * The ByteCount is zeroed out
23 *
24 * This function mangles an existing request buffer into a
25 * SMB_COM_NT_CANCEL request and then sends it.
26 */
27static int
28send_nt_cancel(struct TCP_Server_Info *server, struct smb_rqst *rqst,
29 struct mid_q_entry *mid)
30{
31 int rc = 0;
32 struct smb_hdr *in_buf = (struct smb_hdr *)rqst->rq_iov[0].iov_base;
33
34 /* -4 for RFC1001 length and +2 for BCC field */
35 in_buf->smb_buf_length = cpu_to_be32(sizeof(struct smb_hdr) - 4 + 2);
36 in_buf->Command = SMB_COM_NT_CANCEL;
37 in_buf->WordCount = 0;
38 put_bcc(0, in_buf);
39
40 mutex_lock(&server->srv_mutex);
41 rc = cifs_sign_smb(in_buf, server, &mid->sequence_number);
42 if (rc) {
43 mutex_unlock(&server->srv_mutex);
44 return rc;
45 }
46
47 /*
48 * The response to this call was already factored into the sequence
49 * number when the call went out, so we must adjust it back downward
50 * after signing here.
51 */
52 --server->sequence_number;
53 rc = smb_send(server, in_buf, be32_to_cpu(in_buf->smb_buf_length));
54 if (rc < 0)
55 server->sequence_number--;
56
57 mutex_unlock(&server->srv_mutex);
58
59 cifs_dbg(FYI, "issued NT_CANCEL for mid %u, rc = %d\n",
60 get_mid(in_buf), rc);
61
62 return rc;
63}
64
65static bool
66cifs_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
67{
68 return ob1->fid.netfid == ob2->fid.netfid;
69}
70
71static unsigned int
72cifs_read_data_offset(char *buf)
73{
74 READ_RSP *rsp = (READ_RSP *)buf;
75 return le16_to_cpu(rsp->DataOffset);
76}
77
78static unsigned int
79cifs_read_data_length(char *buf, bool in_remaining)
80{
81 READ_RSP *rsp = (READ_RSP *)buf;
82 /* It's a bug reading remaining data for SMB1 packets */
83 WARN_ON(in_remaining);
84 return (le16_to_cpu(rsp->DataLengthHigh) << 16) +
85 le16_to_cpu(rsp->DataLength);
86}
87
88static struct mid_q_entry *
89cifs_find_mid(struct TCP_Server_Info *server, char *buffer)
90{
91 struct smb_hdr *buf = (struct smb_hdr *)buffer;
92 struct mid_q_entry *mid;
93
94 spin_lock(&GlobalMid_Lock);
95 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
96 if (compare_mid(mid->mid, buf) &&
97 mid->mid_state == MID_REQUEST_SUBMITTED &&
98 le16_to_cpu(mid->command) == buf->Command) {
99 kref_get(&mid->refcount);
100 spin_unlock(&GlobalMid_Lock);
101 return mid;
102 }
103 }
104 spin_unlock(&GlobalMid_Lock);
105 return NULL;
106}
107
108static void
109cifs_add_credits(struct TCP_Server_Info *server,
110 const struct cifs_credits *credits, const int optype)
111{
112 spin_lock(&server->req_lock);
113 server->credits += credits->value;
114 server->in_flight--;
115 spin_unlock(&server->req_lock);
116 wake_up(&server->request_q);
117}
118
119static void
120cifs_set_credits(struct TCP_Server_Info *server, const int val)
121{
122 spin_lock(&server->req_lock);
123 server->credits = val;
124 server->oplocks = val > 1 ? enable_oplocks : false;
125 spin_unlock(&server->req_lock);
126}
127
128static int *
129cifs_get_credits_field(struct TCP_Server_Info *server, const int optype)
130{
131 return &server->credits;
132}
133
134static unsigned int
135cifs_get_credits(struct mid_q_entry *mid)
136{
137 return 1;
138}
139
140/*
141 * Find a free multiplex id (SMB mid). Otherwise there could be
142 * mid collisions which might cause problems, demultiplexing the
143 * wrong response to this request. Multiplex ids could collide if
144 * one of a series requests takes much longer than the others, or
145 * if a very large number of long lived requests (byte range
146 * locks or FindNotify requests) are pending. No more than
147 * 64K-1 requests can be outstanding at one time. If no
148 * mids are available, return zero. A future optimization
149 * could make the combination of mids and uid the key we use
150 * to demultiplex on (rather than mid alone).
151 * In addition to the above check, the cifs demultiplex
152 * code already used the command code as a secondary
153 * check of the frame and if signing is negotiated the
154 * response would be discarded if the mid were the same
155 * but the signature was wrong. Since the mid is not put in the
156 * pending queue until later (when it is about to be dispatched)
157 * we do have to limit the number of outstanding requests
158 * to somewhat less than 64K-1 although it is hard to imagine
159 * so many threads being in the vfs at one time.
160 */
161static __u64
162cifs_get_next_mid(struct TCP_Server_Info *server)
163{
164 __u64 mid = 0;
165 __u16 last_mid, cur_mid;
166 bool collision;
167
168 spin_lock(&GlobalMid_Lock);
169
170 /* mid is 16 bit only for CIFS/SMB */
171 cur_mid = (__u16)((server->CurrentMid) & 0xffff);
172 /* we do not want to loop forever */
173 last_mid = cur_mid;
174 cur_mid++;
175 /* avoid 0xFFFF MID */
176 if (cur_mid == 0xffff)
177 cur_mid++;
178
179 /*
180 * This nested loop looks more expensive than it is.
181 * In practice the list of pending requests is short,
182 * fewer than 50, and the mids are likely to be unique
183 * on the first pass through the loop unless some request
184 * takes longer than the 64 thousand requests before it
185 * (and it would also have to have been a request that
186 * did not time out).
187 */
188 while (cur_mid != last_mid) {
189 struct mid_q_entry *mid_entry;
190 unsigned int num_mids;
191
192 collision = false;
193 if (cur_mid == 0)
194 cur_mid++;
195
196 num_mids = 0;
197 list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) {
198 ++num_mids;
199 if (mid_entry->mid == cur_mid &&
200 mid_entry->mid_state == MID_REQUEST_SUBMITTED) {
201 /* This mid is in use, try a different one */
202 collision = true;
203 break;
204 }
205 }
206
207 /*
208 * if we have more than 32k mids in the list, then something
209 * is very wrong. Possibly a local user is trying to DoS the
210 * box by issuing long-running calls and SIGKILL'ing them. If
211 * we get to 2^16 mids then we're in big trouble as this
212 * function could loop forever.
213 *
214 * Go ahead and assign out the mid in this situation, but force
215 * an eventual reconnect to clean out the pending_mid_q.
216 */
217 if (num_mids > 32768)
218 server->tcpStatus = CifsNeedReconnect;
219
220 if (!collision) {
221 mid = (__u64)cur_mid;
222 server->CurrentMid = mid;
223 break;
224 }
225 cur_mid++;
226 }
227 spin_unlock(&GlobalMid_Lock);
228 return mid;
229}
230
231/*
232 return codes:
233 0 not a transact2, or all data present
234 >0 transact2 with that much data missing
235 -EINVAL invalid transact2
236 */
237static int
238check2ndT2(char *buf)
239{
240 struct smb_hdr *pSMB = (struct smb_hdr *)buf;
241 struct smb_t2_rsp *pSMBt;
242 int remaining;
243 __u16 total_data_size, data_in_this_rsp;
244
245 if (pSMB->Command != SMB_COM_TRANSACTION2)
246 return 0;
247
248 /* check for plausible wct, bcc and t2 data and parm sizes */
249 /* check for parm and data offset going beyond end of smb */
250 if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */
251 cifs_dbg(FYI, "Invalid transact2 word count\n");
252 return -EINVAL;
253 }
254
255 pSMBt = (struct smb_t2_rsp *)pSMB;
256
257 total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
258 data_in_this_rsp = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
259
260 if (total_data_size == data_in_this_rsp)
261 return 0;
262 else if (total_data_size < data_in_this_rsp) {
263 cifs_dbg(FYI, "total data %d smaller than data in frame %d\n",
264 total_data_size, data_in_this_rsp);
265 return -EINVAL;
266 }
267
268 remaining = total_data_size - data_in_this_rsp;
269
270 cifs_dbg(FYI, "missing %d bytes from transact2, check next response\n",
271 remaining);
272 if (total_data_size > CIFSMaxBufSize) {
273 cifs_dbg(VFS, "TotalDataSize %d is over maximum buffer %d\n",
274 total_data_size, CIFSMaxBufSize);
275 return -EINVAL;
276 }
277 return remaining;
278}
279
280static int
281coalesce_t2(char *second_buf, struct smb_hdr *target_hdr)
282{
283 struct smb_t2_rsp *pSMBs = (struct smb_t2_rsp *)second_buf;
284 struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)target_hdr;
285 char *data_area_of_tgt;
286 char *data_area_of_src;
287 int remaining;
288 unsigned int byte_count, total_in_tgt;
289 __u16 tgt_total_cnt, src_total_cnt, total_in_src;
290
291 src_total_cnt = get_unaligned_le16(&pSMBs->t2_rsp.TotalDataCount);
292 tgt_total_cnt = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
293
294 if (tgt_total_cnt != src_total_cnt)
295 cifs_dbg(FYI, "total data count of primary and secondary t2 differ source=%hu target=%hu\n",
296 src_total_cnt, tgt_total_cnt);
297
298 total_in_tgt = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
299
300 remaining = tgt_total_cnt - total_in_tgt;
301
302 if (remaining < 0) {
303 cifs_dbg(FYI, "Server sent too much data. tgt_total_cnt=%hu total_in_tgt=%u\n",
304 tgt_total_cnt, total_in_tgt);
305 return -EPROTO;
306 }
307
308 if (remaining == 0) {
309 /* nothing to do, ignore */
310 cifs_dbg(FYI, "no more data remains\n");
311 return 0;
312 }
313
314 total_in_src = get_unaligned_le16(&pSMBs->t2_rsp.DataCount);
315 if (remaining < total_in_src)
316 cifs_dbg(FYI, "transact2 2nd response contains too much data\n");
317
318 /* find end of first SMB data area */
319 data_area_of_tgt = (char *)&pSMBt->hdr.Protocol +
320 get_unaligned_le16(&pSMBt->t2_rsp.DataOffset);
321
322 /* validate target area */
323 data_area_of_src = (char *)&pSMBs->hdr.Protocol +
324 get_unaligned_le16(&pSMBs->t2_rsp.DataOffset);
325
326 data_area_of_tgt += total_in_tgt;
327
328 total_in_tgt += total_in_src;
329 /* is the result too big for the field? */
330 if (total_in_tgt > USHRT_MAX) {
331 cifs_dbg(FYI, "coalesced DataCount too large (%u)\n",
332 total_in_tgt);
333 return -EPROTO;
334 }
335 put_unaligned_le16(total_in_tgt, &pSMBt->t2_rsp.DataCount);
336
337 /* fix up the BCC */
338 byte_count = get_bcc(target_hdr);
339 byte_count += total_in_src;
340 /* is the result too big for the field? */
341 if (byte_count > USHRT_MAX) {
342 cifs_dbg(FYI, "coalesced BCC too large (%u)\n", byte_count);
343 return -EPROTO;
344 }
345 put_bcc(byte_count, target_hdr);
346
347 byte_count = be32_to_cpu(target_hdr->smb_buf_length);
348 byte_count += total_in_src;
349 /* don't allow buffer to overflow */
350 if (byte_count > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) {
351 cifs_dbg(FYI, "coalesced BCC exceeds buffer size (%u)\n",
352 byte_count);
353 return -ENOBUFS;
354 }
355 target_hdr->smb_buf_length = cpu_to_be32(byte_count);
356
357 /* copy second buffer into end of first buffer */
358 memcpy(data_area_of_tgt, data_area_of_src, total_in_src);
359
360 if (remaining != total_in_src) {
361 /* more responses to go */
362 cifs_dbg(FYI, "waiting for more secondary responses\n");
363 return 1;
364 }
365
366 /* we are done */
367 cifs_dbg(FYI, "found the last secondary response\n");
368 return 0;
369}
370
371static void
372cifs_downgrade_oplock(struct TCP_Server_Info *server,
373 struct cifsInodeInfo *cinode, __u32 oplock,
374 unsigned int epoch, bool *purge_cache)
375{
376 cifs_set_oplock_level(cinode, oplock);
377}
378
379static bool
380cifs_check_trans2(struct mid_q_entry *mid, struct TCP_Server_Info *server,
381 char *buf, int malformed)
382{
383 if (malformed)
384 return false;
385 if (check2ndT2(buf) <= 0)
386 return false;
387 mid->multiRsp = true;
388 if (mid->resp_buf) {
389 /* merge response - fix up 1st*/
390 malformed = coalesce_t2(buf, mid->resp_buf);
391 if (malformed > 0)
392 return true;
393 /* All parts received or packet is malformed. */
394 mid->multiEnd = true;
395 dequeue_mid(mid, malformed);
396 return true;
397 }
398 if (!server->large_buf) {
399 /*FIXME: switch to already allocated largebuf?*/
400 cifs_dbg(VFS, "1st trans2 resp needs bigbuf\n");
401 } else {
402 /* Have first buffer */
403 mid->resp_buf = buf;
404 mid->large_buf = true;
405 server->bigbuf = NULL;
406 }
407 return true;
408}
409
410static bool
411cifs_need_neg(struct TCP_Server_Info *server)
412{
413 return server->maxBuf == 0;
414}
415
416static int
417cifs_negotiate(const unsigned int xid, struct cifs_ses *ses)
418{
419 int rc;
420 rc = CIFSSMBNegotiate(xid, ses);
421 if (rc == -EAGAIN) {
422 /* retry only once on 1st time connection */
423 set_credits(ses->server, 1);
424 rc = CIFSSMBNegotiate(xid, ses);
425 if (rc == -EAGAIN)
426 rc = -EHOSTDOWN;
427 }
428 return rc;
429}
430
431static unsigned int
432cifs_negotiate_wsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
433{
434 __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
435 struct TCP_Server_Info *server = tcon->ses->server;
436 unsigned int wsize;
437
438 /* start with specified wsize, or default */
439 if (ctx->wsize)
440 wsize = ctx->wsize;
441 else if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
442 wsize = CIFS_DEFAULT_IOSIZE;
443 else
444 wsize = CIFS_DEFAULT_NON_POSIX_WSIZE;
445
446 /* can server support 24-bit write sizes? (via UNIX extensions) */
447 if (!tcon->unix_ext || !(unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
448 wsize = min_t(unsigned int, wsize, CIFS_MAX_RFC1002_WSIZE);
449
450 /*
451 * no CAP_LARGE_WRITE_X or is signing enabled without CAP_UNIX set?
452 * Limit it to max buffer offered by the server, minus the size of the
453 * WRITEX header, not including the 4 byte RFC1001 length.
454 */
455 if (!(server->capabilities & CAP_LARGE_WRITE_X) ||
456 (!(server->capabilities & CAP_UNIX) && server->sign))
457 wsize = min_t(unsigned int, wsize,
458 server->maxBuf - sizeof(WRITE_REQ) + 4);
459
460 /* hard limit of CIFS_MAX_WSIZE */
461 wsize = min_t(unsigned int, wsize, CIFS_MAX_WSIZE);
462
463 return wsize;
464}
465
466static unsigned int
467cifs_negotiate_rsize(struct cifs_tcon *tcon, struct smb3_fs_context *ctx)
468{
469 __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
470 struct TCP_Server_Info *server = tcon->ses->server;
471 unsigned int rsize, defsize;
472
473 /*
474 * Set default value...
475 *
476 * HACK alert! Ancient servers have very small buffers. Even though
477 * MS-CIFS indicates that servers are only limited by the client's
478 * bufsize for reads, testing against win98se shows that it throws
479 * INVALID_PARAMETER errors if you try to request too large a read.
480 * OS/2 just sends back short reads.
481 *
482 * If the server doesn't advertise CAP_LARGE_READ_X, then assume that
483 * it can't handle a read request larger than its MaxBufferSize either.
484 */
485 if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_READ_CAP))
486 defsize = CIFS_DEFAULT_IOSIZE;
487 else if (server->capabilities & CAP_LARGE_READ_X)
488 defsize = CIFS_DEFAULT_NON_POSIX_RSIZE;
489 else
490 defsize = server->maxBuf - sizeof(READ_RSP);
491
492 rsize = ctx->rsize ? ctx->rsize : defsize;
493
494 /*
495 * no CAP_LARGE_READ_X? Then MS-CIFS states that we must limit this to
496 * the client's MaxBufferSize.
497 */
498 if (!(server->capabilities & CAP_LARGE_READ_X))
499 rsize = min_t(unsigned int, CIFSMaxBufSize, rsize);
500
501 /* hard limit of CIFS_MAX_RSIZE */
502 rsize = min_t(unsigned int, rsize, CIFS_MAX_RSIZE);
503
504 return rsize;
505}
506
507static void
508cifs_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
509 struct cifs_sb_info *cifs_sb)
510{
511 CIFSSMBQFSDeviceInfo(xid, tcon);
512 CIFSSMBQFSAttributeInfo(xid, tcon);
513}
514
515static int
516cifs_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
517 struct cifs_sb_info *cifs_sb, const char *full_path)
518{
519 int rc;
520 FILE_ALL_INFO *file_info;
521
522 file_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
523 if (file_info == NULL)
524 return -ENOMEM;
525
526 rc = CIFSSMBQPathInfo(xid, tcon, full_path, file_info,
527 0 /* not legacy */, cifs_sb->local_nls,
528 cifs_remap(cifs_sb));
529
530 if (rc == -EOPNOTSUPP || rc == -EINVAL)
531 rc = SMBQueryInformation(xid, tcon, full_path, file_info,
532 cifs_sb->local_nls, cifs_remap(cifs_sb));
533 kfree(file_info);
534 return rc;
535}
536
537static int
538cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
539 struct cifs_sb_info *cifs_sb, const char *full_path,
540 FILE_ALL_INFO *data, bool *adjustTZ, bool *symlink)
541{
542 int rc;
543
544 *symlink = false;
545
546 /* could do find first instead but this returns more info */
547 rc = CIFSSMBQPathInfo(xid, tcon, full_path, data, 0 /* not legacy */,
548 cifs_sb->local_nls, cifs_remap(cifs_sb));
549 /*
550 * BB optimize code so we do not make the above call when server claims
551 * no NT SMB support and the above call failed at least once - set flag
552 * in tcon or mount.
553 */
554 if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
555 rc = SMBQueryInformation(xid, tcon, full_path, data,
556 cifs_sb->local_nls,
557 cifs_remap(cifs_sb));
558 *adjustTZ = true;
559 }
560
561 if (!rc && (le32_to_cpu(data->Attributes) & ATTR_REPARSE)) {
562 int tmprc;
563 int oplock = 0;
564 struct cifs_fid fid;
565 struct cifs_open_parms oparms;
566
567 oparms.tcon = tcon;
568 oparms.cifs_sb = cifs_sb;
569 oparms.desired_access = FILE_READ_ATTRIBUTES;
570 oparms.create_options = cifs_create_options(cifs_sb, 0);
571 oparms.disposition = FILE_OPEN;
572 oparms.path = full_path;
573 oparms.fid = &fid;
574 oparms.reconnect = false;
575
576 /* Need to check if this is a symbolic link or not */
577 tmprc = CIFS_open(xid, &oparms, &oplock, NULL);
578 if (tmprc == -EOPNOTSUPP)
579 *symlink = true;
580 else if (tmprc == 0)
581 CIFSSMBClose(xid, tcon, fid.netfid);
582 }
583
584 return rc;
585}
586
587static int
588cifs_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
589 struct cifs_sb_info *cifs_sb, const char *full_path,
590 u64 *uniqueid, FILE_ALL_INFO *data)
591{
592 /*
593 * We can not use the IndexNumber field by default from Windows or
594 * Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA
595 * CIFS spec claims that this value is unique within the scope of a
596 * share, and the windows docs hint that it's actually unique
597 * per-machine.
598 *
599 * There may be higher info levels that work but are there Windows
600 * server or network appliances for which IndexNumber field is not
601 * guaranteed unique?
602 */
603 return CIFSGetSrvInodeNumber(xid, tcon, full_path, uniqueid,
604 cifs_sb->local_nls,
605 cifs_remap(cifs_sb));
606}
607
608static int
609cifs_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
610 struct cifs_fid *fid, FILE_ALL_INFO *data)
611{
612 return CIFSSMBQFileInfo(xid, tcon, fid->netfid, data);
613}
614
615static void
616cifs_clear_stats(struct cifs_tcon *tcon)
617{
618 atomic_set(&tcon->stats.cifs_stats.num_writes, 0);
619 atomic_set(&tcon->stats.cifs_stats.num_reads, 0);
620 atomic_set(&tcon->stats.cifs_stats.num_flushes, 0);
621 atomic_set(&tcon->stats.cifs_stats.num_oplock_brks, 0);
622 atomic_set(&tcon->stats.cifs_stats.num_opens, 0);
623 atomic_set(&tcon->stats.cifs_stats.num_posixopens, 0);
624 atomic_set(&tcon->stats.cifs_stats.num_posixmkdirs, 0);
625 atomic_set(&tcon->stats.cifs_stats.num_closes, 0);
626 atomic_set(&tcon->stats.cifs_stats.num_deletes, 0);
627 atomic_set(&tcon->stats.cifs_stats.num_mkdirs, 0);
628 atomic_set(&tcon->stats.cifs_stats.num_rmdirs, 0);
629 atomic_set(&tcon->stats.cifs_stats.num_renames, 0);
630 atomic_set(&tcon->stats.cifs_stats.num_t2renames, 0);
631 atomic_set(&tcon->stats.cifs_stats.num_ffirst, 0);
632 atomic_set(&tcon->stats.cifs_stats.num_fnext, 0);
633 atomic_set(&tcon->stats.cifs_stats.num_fclose, 0);
634 atomic_set(&tcon->stats.cifs_stats.num_hardlinks, 0);
635 atomic_set(&tcon->stats.cifs_stats.num_symlinks, 0);
636 atomic_set(&tcon->stats.cifs_stats.num_locks, 0);
637 atomic_set(&tcon->stats.cifs_stats.num_acl_get, 0);
638 atomic_set(&tcon->stats.cifs_stats.num_acl_set, 0);
639}
640
641static void
642cifs_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
643{
644 seq_printf(m, " Oplocks breaks: %d",
645 atomic_read(&tcon->stats.cifs_stats.num_oplock_brks));
646 seq_printf(m, "\nReads: %d Bytes: %llu",
647 atomic_read(&tcon->stats.cifs_stats.num_reads),
648 (long long)(tcon->bytes_read));
649 seq_printf(m, "\nWrites: %d Bytes: %llu",
650 atomic_read(&tcon->stats.cifs_stats.num_writes),
651 (long long)(tcon->bytes_written));
652 seq_printf(m, "\nFlushes: %d",
653 atomic_read(&tcon->stats.cifs_stats.num_flushes));
654 seq_printf(m, "\nLocks: %d HardLinks: %d Symlinks: %d",
655 atomic_read(&tcon->stats.cifs_stats.num_locks),
656 atomic_read(&tcon->stats.cifs_stats.num_hardlinks),
657 atomic_read(&tcon->stats.cifs_stats.num_symlinks));
658 seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
659 atomic_read(&tcon->stats.cifs_stats.num_opens),
660 atomic_read(&tcon->stats.cifs_stats.num_closes),
661 atomic_read(&tcon->stats.cifs_stats.num_deletes));
662 seq_printf(m, "\nPosix Opens: %d Posix Mkdirs: %d",
663 atomic_read(&tcon->stats.cifs_stats.num_posixopens),
664 atomic_read(&tcon->stats.cifs_stats.num_posixmkdirs));
665 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
666 atomic_read(&tcon->stats.cifs_stats.num_mkdirs),
667 atomic_read(&tcon->stats.cifs_stats.num_rmdirs));
668 seq_printf(m, "\nRenames: %d T2 Renames %d",
669 atomic_read(&tcon->stats.cifs_stats.num_renames),
670 atomic_read(&tcon->stats.cifs_stats.num_t2renames));
671 seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
672 atomic_read(&tcon->stats.cifs_stats.num_ffirst),
673 atomic_read(&tcon->stats.cifs_stats.num_fnext),
674 atomic_read(&tcon->stats.cifs_stats.num_fclose));
675}
676
677static void
678cifs_mkdir_setinfo(struct inode *inode, const char *full_path,
679 struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
680 const unsigned int xid)
681{
682 FILE_BASIC_INFO info;
683 struct cifsInodeInfo *cifsInode;
684 u32 dosattrs;
685 int rc;
686
687 memset(&info, 0, sizeof(info));
688 cifsInode = CIFS_I(inode);
689 dosattrs = cifsInode->cifsAttrs|ATTR_READONLY;
690 info.Attributes = cpu_to_le32(dosattrs);
691 rc = CIFSSMBSetPathInfo(xid, tcon, full_path, &info, cifs_sb->local_nls,
692 cifs_sb);
693 if (rc == 0)
694 cifsInode->cifsAttrs = dosattrs;
695}
696
697static int
698cifs_open_file(const unsigned int xid, struct cifs_open_parms *oparms,
699 __u32 *oplock, FILE_ALL_INFO *buf)
700{
701 if (!(oparms->tcon->ses->capabilities & CAP_NT_SMBS))
702 return SMBLegacyOpen(xid, oparms->tcon, oparms->path,
703 oparms->disposition,
704 oparms->desired_access,
705 oparms->create_options,
706 &oparms->fid->netfid, oplock, buf,
707 oparms->cifs_sb->local_nls,
708 cifs_remap(oparms->cifs_sb));
709 return CIFS_open(xid, oparms, oplock, buf);
710}
711
712static void
713cifs_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
714{
715 struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
716 cfile->fid.netfid = fid->netfid;
717 cifs_set_oplock_level(cinode, oplock);
718 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
719}
720
721static void
722cifs_close_file(const unsigned int xid, struct cifs_tcon *tcon,
723 struct cifs_fid *fid)
724{
725 CIFSSMBClose(xid, tcon, fid->netfid);
726}
727
728static int
729cifs_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
730 struct cifs_fid *fid)
731{
732 return CIFSSMBFlush(xid, tcon, fid->netfid);
733}
734
735static int
736cifs_sync_read(const unsigned int xid, struct cifs_fid *pfid,
737 struct cifs_io_parms *parms, unsigned int *bytes_read,
738 char **buf, int *buf_type)
739{
740 parms->netfid = pfid->netfid;
741 return CIFSSMBRead(xid, parms, bytes_read, buf, buf_type);
742}
743
744static int
745cifs_sync_write(const unsigned int xid, struct cifs_fid *pfid,
746 struct cifs_io_parms *parms, unsigned int *written,
747 struct kvec *iov, unsigned long nr_segs)
748{
749
750 parms->netfid = pfid->netfid;
751 return CIFSSMBWrite2(xid, parms, written, iov, nr_segs);
752}
753
754static int
755smb_set_file_info(struct inode *inode, const char *full_path,
756 FILE_BASIC_INFO *buf, const unsigned int xid)
757{
758 int oplock = 0;
759 int rc;
760 __u32 netpid;
761 struct cifs_fid fid;
762 struct cifs_open_parms oparms;
763 struct cifsFileInfo *open_file;
764 struct cifsInodeInfo *cinode = CIFS_I(inode);
765 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
766 struct tcon_link *tlink = NULL;
767 struct cifs_tcon *tcon;
768
769 /* if the file is already open for write, just use that fileid */
770 open_file = find_writable_file(cinode, FIND_WR_FSUID_ONLY);
771 if (open_file) {
772 fid.netfid = open_file->fid.netfid;
773 netpid = open_file->pid;
774 tcon = tlink_tcon(open_file->tlink);
775 goto set_via_filehandle;
776 }
777
778 tlink = cifs_sb_tlink(cifs_sb);
779 if (IS_ERR(tlink)) {
780 rc = PTR_ERR(tlink);
781 tlink = NULL;
782 goto out;
783 }
784 tcon = tlink_tcon(tlink);
785
786 rc = CIFSSMBSetPathInfo(xid, tcon, full_path, buf, cifs_sb->local_nls,
787 cifs_sb);
788 if (rc == 0) {
789 cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
790 goto out;
791 } else if (rc != -EOPNOTSUPP && rc != -EINVAL) {
792 goto out;
793 }
794
795 oparms.tcon = tcon;
796 oparms.cifs_sb = cifs_sb;
797 oparms.desired_access = SYNCHRONIZE | FILE_WRITE_ATTRIBUTES;
798 oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR);
799 oparms.disposition = FILE_OPEN;
800 oparms.path = full_path;
801 oparms.fid = &fid;
802 oparms.reconnect = false;
803
804 cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n");
805 rc = CIFS_open(xid, &oparms, &oplock, NULL);
806 if (rc != 0) {
807 if (rc == -EIO)
808 rc = -EINVAL;
809 goto out;
810 }
811
812 netpid = current->tgid;
813
814set_via_filehandle:
815 rc = CIFSSMBSetFileInfo(xid, tcon, buf, fid.netfid, netpid);
816 if (!rc)
817 cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
818
819 if (open_file == NULL)
820 CIFSSMBClose(xid, tcon, fid.netfid);
821 else
822 cifsFileInfo_put(open_file);
823out:
824 if (tlink != NULL)
825 cifs_put_tlink(tlink);
826 return rc;
827}
828
829static int
830cifs_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
831 struct cifsFileInfo *cfile)
832{
833 return CIFSSMB_set_compression(xid, tcon, cfile->fid.netfid);
834}
835
836static int
837cifs_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
838 const char *path, struct cifs_sb_info *cifs_sb,
839 struct cifs_fid *fid, __u16 search_flags,
840 struct cifs_search_info *srch_inf)
841{
842 int rc;
843
844 rc = CIFSFindFirst(xid, tcon, path, cifs_sb,
845 &fid->netfid, search_flags, srch_inf, true);
846 if (rc)
847 cifs_dbg(FYI, "find first failed=%d\n", rc);
848 return rc;
849}
850
851static int
852cifs_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
853 struct cifs_fid *fid, __u16 search_flags,
854 struct cifs_search_info *srch_inf)
855{
856 return CIFSFindNext(xid, tcon, fid->netfid, search_flags, srch_inf);
857}
858
859static int
860cifs_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
861 struct cifs_fid *fid)
862{
863 return CIFSFindClose(xid, tcon, fid->netfid);
864}
865
866static int
867cifs_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
868 struct cifsInodeInfo *cinode)
869{
870 return CIFSSMBLock(0, tcon, fid->netfid, current->tgid, 0, 0, 0, 0,
871 LOCKING_ANDX_OPLOCK_RELEASE, false,
872 CIFS_CACHE_READ(cinode) ? 1 : 0);
873}
874
875static int
876cifs_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
877 struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
878{
879 int rc = -EOPNOTSUPP;
880
881 buf->f_type = CIFS_MAGIC_NUMBER;
882
883 /*
884 * We could add a second check for a QFS Unix capability bit
885 */
886 if ((tcon->ses->capabilities & CAP_UNIX) &&
887 (CIFS_POSIX_EXTENSIONS & le64_to_cpu(tcon->fsUnixInfo.Capability)))
888 rc = CIFSSMBQFSPosixInfo(xid, tcon, buf);
889
890 /*
891 * Only need to call the old QFSInfo if failed on newer one,
892 * e.g. by OS/2.
893 **/
894 if (rc && (tcon->ses->capabilities & CAP_NT_SMBS))
895 rc = CIFSSMBQFSInfo(xid, tcon, buf);
896
897 /*
898 * Some old Windows servers also do not support level 103, retry with
899 * older level one if old server failed the previous call or we
900 * bypassed it because we detected that this was an older LANMAN sess
901 */
902 if (rc)
903 rc = SMBOldQFSInfo(xid, tcon, buf);
904 return rc;
905}
906
907static int
908cifs_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
909 __u64 length, __u32 type, int lock, int unlock, bool wait)
910{
911 return CIFSSMBLock(xid, tlink_tcon(cfile->tlink), cfile->fid.netfid,
912 current->tgid, length, offset, unlock, lock,
913 (__u8)type, wait, 0);
914}
915
916static int
917cifs_unix_dfs_readlink(const unsigned int xid, struct cifs_tcon *tcon,
918 const unsigned char *searchName, char **symlinkinfo,
919 const struct nls_table *nls_codepage)
920{
921#ifdef CONFIG_CIFS_DFS_UPCALL
922 int rc;
923 struct dfs_info3_param referral = {0};
924
925 rc = get_dfs_path(xid, tcon->ses, searchName, nls_codepage, &referral,
926 0);
927
928 if (!rc) {
929 *symlinkinfo = kstrdup(referral.node_name, 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
940static int
941cifs_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 = cifs_create_options(cifs_sb,
974 OPEN_REPARSE_POINT);
975 oparms.disposition = FILE_OPEN;
976 oparms.path = full_path;
977 oparms.fid = &fid;
978 oparms.reconnect = false;
979
980 rc = CIFS_open(xid, &oparms, &oplock, NULL);
981 if (rc)
982 goto out;
983
984 rc = CIFSSMBQuerySymLink(xid, tcon, fid.netfid, target_path,
985 cifs_sb->local_nls);
986 if (rc)
987 goto out_close;
988
989 convert_delimiter(*target_path, '/');
990out_close:
991 CIFSSMBClose(xid, tcon, fid.netfid);
992out:
993 if (!rc)
994 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
995 return rc;
996}
997
998static bool
999cifs_is_read_op(__u32 oplock)
1000{
1001 return oplock == OPLOCK_READ;
1002}
1003
1004static unsigned int
1005cifs_wp_retry_size(struct inode *inode)
1006{
1007 return CIFS_SB(inode->i_sb)->ctx->wsize;
1008}
1009
1010static bool
1011cifs_dir_needs_close(struct cifsFileInfo *cfile)
1012{
1013 return !cfile->srch_inf.endOfSearch && !cfile->invalidHandle;
1014}
1015
1016static bool
1017cifs_can_echo(struct TCP_Server_Info *server)
1018{
1019 if (server->tcpStatus == CifsGood)
1020 return true;
1021
1022 return false;
1023}
1024
1025static int
1026cifs_make_node(unsigned int xid, struct inode *inode,
1027 struct dentry *dentry, struct cifs_tcon *tcon,
1028 const char *full_path, umode_t mode, dev_t dev)
1029{
1030 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1031 struct inode *newinode = NULL;
1032 int rc = -EPERM;
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 oparms.tcon = tcon;
1094 oparms.cifs_sb = cifs_sb;
1095 oparms.desired_access = GENERIC_WRITE;
1096 oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR |
1097 CREATE_OPTION_SPECIAL);
1098 oparms.disposition = FILE_CREATE;
1099 oparms.path = full_path;
1100 oparms.fid = &fid;
1101 oparms.reconnect = false;
1102
1103 if (tcon->ses->server->oplocks)
1104 oplock = REQ_OPLOCK;
1105 else
1106 oplock = 0;
1107 rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, buf);
1108 if (rc)
1109 goto out;
1110
1111 /*
1112 * BB Do not bother to decode buf since no local inode yet to put
1113 * timestamps in, but we can reuse it safely.
1114 */
1115
1116 pdev = (struct win_dev *)buf;
1117 io_parms.pid = current->tgid;
1118 io_parms.tcon = tcon;
1119 io_parms.offset = 0;
1120 io_parms.length = sizeof(struct win_dev);
1121 iov[1].iov_base = buf;
1122 iov[1].iov_len = sizeof(struct win_dev);
1123 if (S_ISCHR(mode)) {
1124 memcpy(pdev->type, "IntxCHR", 8);
1125 pdev->major = cpu_to_le64(MAJOR(dev));
1126 pdev->minor = cpu_to_le64(MINOR(dev));
1127 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
1128 &bytes_written, iov, 1);
1129 } else if (S_ISBLK(mode)) {
1130 memcpy(pdev->type, "IntxBLK", 8);
1131 pdev->major = cpu_to_le64(MAJOR(dev));
1132 pdev->minor = cpu_to_le64(MINOR(dev));
1133 rc = tcon->ses->server->ops->sync_write(xid, &fid, &io_parms,
1134 &bytes_written, iov, 1);
1135 }
1136 tcon->ses->server->ops->close(xid, tcon, &fid);
1137 d_drop(dentry);
1138
1139 /* FIXME: add code here to set EAs */
1140out:
1141 kfree(buf);
1142 return rc;
1143}
1144
1145
1146
1147struct smb_version_operations smb1_operations = {
1148 .send_cancel = send_nt_cancel,
1149 .compare_fids = cifs_compare_fids,
1150 .setup_request = cifs_setup_request,
1151 .setup_async_request = cifs_setup_async_request,
1152 .check_receive = cifs_check_receive,
1153 .add_credits = cifs_add_credits,
1154 .set_credits = cifs_set_credits,
1155 .get_credits_field = cifs_get_credits_field,
1156 .get_credits = cifs_get_credits,
1157 .wait_mtu_credits = cifs_wait_mtu_credits,
1158 .get_next_mid = cifs_get_next_mid,
1159 .read_data_offset = cifs_read_data_offset,
1160 .read_data_length = cifs_read_data_length,
1161 .map_error = map_smb_to_linux_error,
1162 .find_mid = cifs_find_mid,
1163 .check_message = checkSMB,
1164 .dump_detail = cifs_dump_detail,
1165 .clear_stats = cifs_clear_stats,
1166 .print_stats = cifs_print_stats,
1167 .is_oplock_break = is_valid_oplock_break,
1168 .downgrade_oplock = cifs_downgrade_oplock,
1169 .check_trans2 = cifs_check_trans2,
1170 .need_neg = cifs_need_neg,
1171 .negotiate = cifs_negotiate,
1172 .negotiate_wsize = cifs_negotiate_wsize,
1173 .negotiate_rsize = cifs_negotiate_rsize,
1174 .sess_setup = CIFS_SessSetup,
1175 .logoff = CIFSSMBLogoff,
1176 .tree_connect = CIFSTCon,
1177 .tree_disconnect = CIFSSMBTDis,
1178 .get_dfs_refer = CIFSGetDFSRefer,
1179 .qfs_tcon = cifs_qfs_tcon,
1180 .is_path_accessible = cifs_is_path_accessible,
1181 .can_echo = cifs_can_echo,
1182 .query_path_info = cifs_query_path_info,
1183 .query_file_info = cifs_query_file_info,
1184 .get_srv_inum = cifs_get_srv_inum,
1185 .set_path_size = CIFSSMBSetEOF,
1186 .set_file_size = CIFSSMBSetFileSize,
1187 .set_file_info = smb_set_file_info,
1188 .set_compression = cifs_set_compression,
1189 .echo = CIFSSMBEcho,
1190 .mkdir = CIFSSMBMkDir,
1191 .mkdir_setinfo = cifs_mkdir_setinfo,
1192 .rmdir = CIFSSMBRmDir,
1193 .unlink = CIFSSMBDelFile,
1194 .rename_pending_delete = cifs_rename_pending_delete,
1195 .rename = CIFSSMBRename,
1196 .create_hardlink = CIFSCreateHardLink,
1197 .query_symlink = cifs_query_symlink,
1198 .open = cifs_open_file,
1199 .set_fid = cifs_set_fid,
1200 .close = cifs_close_file,
1201 .flush = cifs_flush_file,
1202 .async_readv = cifs_async_readv,
1203 .async_writev = cifs_async_writev,
1204 .sync_read = cifs_sync_read,
1205 .sync_write = cifs_sync_write,
1206 .query_dir_first = cifs_query_dir_first,
1207 .query_dir_next = cifs_query_dir_next,
1208 .close_dir = cifs_close_dir,
1209 .calc_smb_size = smbCalcSize,
1210 .oplock_response = cifs_oplock_response,
1211 .queryfs = cifs_queryfs,
1212 .mand_lock = cifs_mand_lock,
1213 .mand_unlock_range = cifs_unlock_range,
1214 .push_mand_locks = cifs_push_mandatory_locks,
1215 .query_mf_symlink = cifs_query_mf_symlink,
1216 .create_mf_symlink = cifs_create_mf_symlink,
1217 .is_read_op = cifs_is_read_op,
1218 .wp_retry_size = cifs_wp_retry_size,
1219 .dir_needs_close = cifs_dir_needs_close,
1220 .select_sectype = cifs_select_sectype,
1221#ifdef CONFIG_CIFS_XATTR
1222 .query_all_EAs = CIFSSMBQAllEAs,
1223 .set_EA = CIFSSMBSetEA,
1224#endif /* CIFS_XATTR */
1225 .get_acl = get_cifs_acl,
1226 .get_acl_by_fid = get_cifs_acl_by_fid,
1227 .set_acl = set_cifs_acl,
1228 .make_node = cifs_make_node,
1229};
1230
1231struct smb_version_values smb1_values = {
1232 .version_string = SMB1_VERSION_STRING,
1233 .protocol_id = SMB10_PROT_ID,
1234 .large_lock_type = LOCKING_ANDX_LARGE_FILES,
1235 .exclusive_lock_type = 0,
1236 .shared_lock_type = LOCKING_ANDX_SHARED_LOCK,
1237 .unlock_lock_type = 0,
1238 .header_preamble_size = 4,
1239 .header_size = sizeof(struct smb_hdr),
1240 .max_header_size = MAX_CIFS_HDR_SIZE,
1241 .read_rsp_size = sizeof(READ_RSP),
1242 .lock_cmd = cpu_to_le16(SMB_COM_LOCKING_ANDX),
1243 .cap_unix = CAP_UNIX,
1244 .cap_nt_find = CAP_NT_SMBS | CAP_NT_FIND,
1245 .cap_large_files = CAP_LARGE_FILES,
1246 .signing_enabled = SECMODE_SIGN_ENABLED,
1247 .signing_required = SECMODE_SIGN_REQUIRED,
1248};