blob: d1fdfa848703d322f1f31cae5abb9ab5441625fb [file] [log] [blame]
Jeff Layton23db65f2012-05-15 12:20:51 -04001/*
2 * SMB1 (CIFS) version specific operations
3 *
4 * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
5 *
6 * This library is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License v2 as published
8 * by the Free Software Foundation.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public License
16 * along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
Pavel Shilovsky24985c52012-09-18 16:20:28 -070020#include <linux/pagemap.h>
Pavel Shilovsky76ec5e32012-09-18 16:20:33 -070021#include <linux/vfs.h>
Jeff Layton23db65f2012-05-15 12:20:51 -040022#include "cifsglob.h"
Jeff Layton121b0462012-05-15 12:21:10 -040023#include "cifsproto.h"
24#include "cifs_debug.h"
Pavel Shilovsky106dc532012-02-28 14:23:34 +030025#include "cifspdu.h"
Jeff Layton121b0462012-05-15 12:21:10 -040026
27/*
28 * An NT cancel request header looks just like the original request except:
29 *
30 * The Command is SMB_COM_NT_CANCEL
31 * The WordCount is zeroed out
32 * The ByteCount is zeroed out
33 *
34 * This function mangles an existing request buffer into a
35 * SMB_COM_NT_CANCEL request and then sends it.
36 */
37static int
38send_nt_cancel(struct TCP_Server_Info *server, void *buf,
39 struct mid_q_entry *mid)
40{
41 int rc = 0;
42 struct smb_hdr *in_buf = (struct smb_hdr *)buf;
43
44 /* -4 for RFC1001 length and +2 for BCC field */
45 in_buf->smb_buf_length = cpu_to_be32(sizeof(struct smb_hdr) - 4 + 2);
46 in_buf->Command = SMB_COM_NT_CANCEL;
47 in_buf->WordCount = 0;
48 put_bcc(0, in_buf);
49
50 mutex_lock(&server->srv_mutex);
51 rc = cifs_sign_smb(in_buf, server, &mid->sequence_number);
52 if (rc) {
53 mutex_unlock(&server->srv_mutex);
54 return rc;
55 }
Jeff Layton31efee62012-12-27 08:05:03 -050056
57 /*
58 * The response to this call was already factored into the sequence
59 * number when the call went out, so we must adjust it back downward
60 * after signing here.
61 */
62 --server->sequence_number;
Jeff Layton121b0462012-05-15 12:21:10 -040063 rc = smb_send(server, in_buf, be32_to_cpu(in_buf->smb_buf_length));
Jeff Laytonad313cb2013-04-03 10:27:36 -040064 if (rc < 0)
65 server->sequence_number--;
66
Jeff Layton121b0462012-05-15 12:21:10 -040067 mutex_unlock(&server->srv_mutex);
68
Joe Perchesf96637b2013-05-04 22:12:25 -050069 cifs_dbg(FYI, "issued NT_CANCEL for mid %u, rc = %d\n",
Tim Gardner3d378d32013-11-02 12:50:34 -050070 get_mid(in_buf), rc);
Jeff Layton121b0462012-05-15 12:21:10 -040071
72 return rc;
73}
Jeff Layton23db65f2012-05-15 12:20:51 -040074
Pavel Shilovsky55157df2012-02-28 14:04:17 +030075static bool
76cifs_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
77{
Pavel Shilovsky4b4de762012-09-18 16:20:26 -070078 return ob1->fid.netfid == ob2->fid.netfid;
Pavel Shilovsky55157df2012-02-28 14:04:17 +030079}
80
Pavel Shilovskyeb378712012-05-17 13:02:51 +040081static unsigned int
82cifs_read_data_offset(char *buf)
83{
84 READ_RSP *rsp = (READ_RSP *)buf;
85 return le16_to_cpu(rsp->DataOffset);
86}
87
88static unsigned int
89cifs_read_data_length(char *buf)
90{
91 READ_RSP *rsp = (READ_RSP *)buf;
92 return (le16_to_cpu(rsp->DataLengthHigh) << 16) +
93 le16_to_cpu(rsp->DataLength);
94}
95
Pavel Shilovsky8aa26f32012-05-17 13:25:35 +040096static struct mid_q_entry *
97cifs_find_mid(struct TCP_Server_Info *server, char *buffer)
98{
99 struct smb_hdr *buf = (struct smb_hdr *)buffer;
100 struct mid_q_entry *mid;
101
102 spin_lock(&GlobalMid_Lock);
103 list_for_each_entry(mid, &server->pending_mid_q, qhead) {
Tim Gardner3d378d32013-11-02 12:50:34 -0500104 if (compare_mid(mid->mid, buf) &&
Pavel Shilovsky8aa26f32012-05-17 13:25:35 +0400105 mid->mid_state == MID_REQUEST_SUBMITTED &&
106 le16_to_cpu(mid->command) == buf->Command) {
107 spin_unlock(&GlobalMid_Lock);
108 return mid;
109 }
110 }
111 spin_unlock(&GlobalMid_Lock);
112 return NULL;
113}
114
Pavel Shilovsky45275782012-05-17 17:53:29 +0400115static void
Pavel Shilovskya891f0f2012-05-23 16:14:34 +0400116cifs_add_credits(struct TCP_Server_Info *server, const unsigned int add,
117 const int optype)
Pavel Shilovsky45275782012-05-17 17:53:29 +0400118{
119 spin_lock(&server->req_lock);
120 server->credits += add;
121 server->in_flight--;
122 spin_unlock(&server->req_lock);
123 wake_up(&server->request_q);
124}
125
126static void
127cifs_set_credits(struct TCP_Server_Info *server, const int val)
128{
129 spin_lock(&server->req_lock);
130 server->credits = val;
131 server->oplocks = val > 1 ? enable_oplocks : false;
132 spin_unlock(&server->req_lock);
133}
134
135static int *
Pavel Shilovskya891f0f2012-05-23 16:14:34 +0400136cifs_get_credits_field(struct TCP_Server_Info *server, const int optype)
Pavel Shilovsky45275782012-05-17 17:53:29 +0400137{
138 return &server->credits;
139}
140
Pavel Shilovskya891f0f2012-05-23 16:14:34 +0400141static unsigned int
142cifs_get_credits(struct mid_q_entry *mid)
143{
144 return 1;
145}
146
Pavel Shilovsky88257362012-05-23 14:01:59 +0400147/*
148 * Find a free multiplex id (SMB mid). Otherwise there could be
149 * mid collisions which might cause problems, demultiplexing the
150 * wrong response to this request. Multiplex ids could collide if
151 * one of a series requests takes much longer than the others, or
152 * if a very large number of long lived requests (byte range
153 * locks or FindNotify requests) are pending. No more than
154 * 64K-1 requests can be outstanding at one time. If no
155 * mids are available, return zero. A future optimization
156 * could make the combination of mids and uid the key we use
157 * to demultiplex on (rather than mid alone).
158 * In addition to the above check, the cifs demultiplex
159 * code already used the command code as a secondary
160 * check of the frame and if signing is negotiated the
161 * response would be discarded if the mid were the same
162 * but the signature was wrong. Since the mid is not put in the
163 * pending queue until later (when it is about to be dispatched)
164 * we do have to limit the number of outstanding requests
165 * to somewhat less than 64K-1 although it is hard to imagine
166 * so many threads being in the vfs at one time.
167 */
168static __u64
169cifs_get_next_mid(struct TCP_Server_Info *server)
170{
171 __u64 mid = 0;
172 __u16 last_mid, cur_mid;
173 bool collision;
174
175 spin_lock(&GlobalMid_Lock);
176
177 /* mid is 16 bit only for CIFS/SMB */
178 cur_mid = (__u16)((server->CurrentMid) & 0xffff);
179 /* we do not want to loop forever */
180 last_mid = cur_mid;
181 cur_mid++;
182
183 /*
184 * This nested loop looks more expensive than it is.
185 * In practice the list of pending requests is short,
186 * fewer than 50, and the mids are likely to be unique
187 * on the first pass through the loop unless some request
188 * takes longer than the 64 thousand requests before it
189 * (and it would also have to have been a request that
190 * did not time out).
191 */
192 while (cur_mid != last_mid) {
193 struct mid_q_entry *mid_entry;
194 unsigned int num_mids;
195
196 collision = false;
197 if (cur_mid == 0)
198 cur_mid++;
199
200 num_mids = 0;
201 list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) {
202 ++num_mids;
203 if (mid_entry->mid == cur_mid &&
204 mid_entry->mid_state == MID_REQUEST_SUBMITTED) {
205 /* This mid is in use, try a different one */
206 collision = true;
207 break;
208 }
209 }
210
211 /*
212 * if we have more than 32k mids in the list, then something
213 * is very wrong. Possibly a local user is trying to DoS the
214 * box by issuing long-running calls and SIGKILL'ing them. If
215 * we get to 2^16 mids then we're in big trouble as this
216 * function could loop forever.
217 *
218 * Go ahead and assign out the mid in this situation, but force
219 * an eventual reconnect to clean out the pending_mid_q.
220 */
221 if (num_mids > 32768)
222 server->tcpStatus = CifsNeedReconnect;
223
224 if (!collision) {
225 mid = (__u64)cur_mid;
226 server->CurrentMid = mid;
227 break;
228 }
229 cur_mid++;
230 }
231 spin_unlock(&GlobalMid_Lock);
232 return mid;
233}
234
Pavel Shilovsky316cf942012-05-23 14:31:03 +0400235/*
236 return codes:
237 0 not a transact2, or all data present
238 >0 transact2 with that much data missing
239 -EINVAL invalid transact2
240 */
241static int
242check2ndT2(char *buf)
243{
244 struct smb_hdr *pSMB = (struct smb_hdr *)buf;
245 struct smb_t2_rsp *pSMBt;
246 int remaining;
247 __u16 total_data_size, data_in_this_rsp;
248
249 if (pSMB->Command != SMB_COM_TRANSACTION2)
250 return 0;
251
252 /* check for plausible wct, bcc and t2 data and parm sizes */
253 /* check for parm and data offset going beyond end of smb */
254 if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */
Joe Perchesf96637b2013-05-04 22:12:25 -0500255 cifs_dbg(FYI, "invalid transact2 word count\n");
Pavel Shilovsky316cf942012-05-23 14:31:03 +0400256 return -EINVAL;
257 }
258
259 pSMBt = (struct smb_t2_rsp *)pSMB;
260
261 total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
262 data_in_this_rsp = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
263
264 if (total_data_size == data_in_this_rsp)
265 return 0;
266 else if (total_data_size < data_in_this_rsp) {
Joe Perchesf96637b2013-05-04 22:12:25 -0500267 cifs_dbg(FYI, "total data %d smaller than data in frame %d\n",
268 total_data_size, data_in_this_rsp);
Pavel Shilovsky316cf942012-05-23 14:31:03 +0400269 return -EINVAL;
270 }
271
272 remaining = total_data_size - data_in_this_rsp;
273
Joe Perchesf96637b2013-05-04 22:12:25 -0500274 cifs_dbg(FYI, "missing %d bytes from transact2, check next response\n",
275 remaining);
Pavel Shilovsky316cf942012-05-23 14:31:03 +0400276 if (total_data_size > CIFSMaxBufSize) {
Joe Perchesf96637b2013-05-04 22:12:25 -0500277 cifs_dbg(VFS, "TotalDataSize %d is over maximum buffer %d\n",
278 total_data_size, CIFSMaxBufSize);
Pavel Shilovsky316cf942012-05-23 14:31:03 +0400279 return -EINVAL;
280 }
281 return remaining;
282}
283
284static int
285coalesce_t2(char *second_buf, struct smb_hdr *target_hdr)
286{
287 struct smb_t2_rsp *pSMBs = (struct smb_t2_rsp *)second_buf;
288 struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)target_hdr;
289 char *data_area_of_tgt;
290 char *data_area_of_src;
291 int remaining;
292 unsigned int byte_count, total_in_tgt;
293 __u16 tgt_total_cnt, src_total_cnt, total_in_src;
294
295 src_total_cnt = get_unaligned_le16(&pSMBs->t2_rsp.TotalDataCount);
296 tgt_total_cnt = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
297
298 if (tgt_total_cnt != src_total_cnt)
Joe Perchesf96637b2013-05-04 22:12:25 -0500299 cifs_dbg(FYI, "total data count of primary and secondary t2 differ source=%hu target=%hu\n",
300 src_total_cnt, tgt_total_cnt);
Pavel Shilovsky316cf942012-05-23 14:31:03 +0400301
302 total_in_tgt = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
303
304 remaining = tgt_total_cnt - total_in_tgt;
305
306 if (remaining < 0) {
Joe Perchesf96637b2013-05-04 22:12:25 -0500307 cifs_dbg(FYI, "Server sent too much data. tgt_total_cnt=%hu total_in_tgt=%hu\n",
308 tgt_total_cnt, total_in_tgt);
Pavel Shilovsky316cf942012-05-23 14:31:03 +0400309 return -EPROTO;
310 }
311
312 if (remaining == 0) {
313 /* nothing to do, ignore */
Joe Perchesf96637b2013-05-04 22:12:25 -0500314 cifs_dbg(FYI, "no more data remains\n");
Pavel Shilovsky316cf942012-05-23 14:31:03 +0400315 return 0;
316 }
317
318 total_in_src = get_unaligned_le16(&pSMBs->t2_rsp.DataCount);
319 if (remaining < total_in_src)
Joe Perchesf96637b2013-05-04 22:12:25 -0500320 cifs_dbg(FYI, "transact2 2nd response contains too much data\n");
Pavel Shilovsky316cf942012-05-23 14:31:03 +0400321
322 /* find end of first SMB data area */
323 data_area_of_tgt = (char *)&pSMBt->hdr.Protocol +
324 get_unaligned_le16(&pSMBt->t2_rsp.DataOffset);
325
326 /* validate target area */
327 data_area_of_src = (char *)&pSMBs->hdr.Protocol +
328 get_unaligned_le16(&pSMBs->t2_rsp.DataOffset);
329
330 data_area_of_tgt += total_in_tgt;
331
332 total_in_tgt += total_in_src;
333 /* is the result too big for the field? */
334 if (total_in_tgt > USHRT_MAX) {
Joe Perchesf96637b2013-05-04 22:12:25 -0500335 cifs_dbg(FYI, "coalesced DataCount too large (%u)\n",
336 total_in_tgt);
Pavel Shilovsky316cf942012-05-23 14:31:03 +0400337 return -EPROTO;
338 }
339 put_unaligned_le16(total_in_tgt, &pSMBt->t2_rsp.DataCount);
340
341 /* fix up the BCC */
342 byte_count = get_bcc(target_hdr);
343 byte_count += total_in_src;
344 /* is the result too big for the field? */
345 if (byte_count > USHRT_MAX) {
Joe Perchesf96637b2013-05-04 22:12:25 -0500346 cifs_dbg(FYI, "coalesced BCC too large (%u)\n", byte_count);
Pavel Shilovsky316cf942012-05-23 14:31:03 +0400347 return -EPROTO;
348 }
349 put_bcc(byte_count, target_hdr);
350
351 byte_count = be32_to_cpu(target_hdr->smb_buf_length);
352 byte_count += total_in_src;
353 /* don't allow buffer to overflow */
354 if (byte_count > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) {
Joe Perchesf96637b2013-05-04 22:12:25 -0500355 cifs_dbg(FYI, "coalesced BCC exceeds buffer size (%u)\n",
356 byte_count);
Pavel Shilovsky316cf942012-05-23 14:31:03 +0400357 return -ENOBUFS;
358 }
359 target_hdr->smb_buf_length = cpu_to_be32(byte_count);
360
361 /* copy second buffer into end of first buffer */
362 memcpy(data_area_of_tgt, data_area_of_src, total_in_src);
363
364 if (remaining != total_in_src) {
365 /* more responses to go */
Joe Perchesf96637b2013-05-04 22:12:25 -0500366 cifs_dbg(FYI, "waiting for more secondary responses\n");
Pavel Shilovsky316cf942012-05-23 14:31:03 +0400367 return 1;
368 }
369
370 /* we are done */
Joe Perchesf96637b2013-05-04 22:12:25 -0500371 cifs_dbg(FYI, "found the last secondary response\n");
Pavel Shilovsky316cf942012-05-23 14:31:03 +0400372 return 0;
373}
374
Sachin Prabhuc11f1df2014-03-11 16:11:47 +0000375static void
376cifs_downgrade_oplock(struct TCP_Server_Info *server,
377 struct cifsInodeInfo *cinode, bool set_level2)
378{
379 if (set_level2)
380 cifs_set_oplock_level(cinode, OPLOCK_READ);
381 else
382 cifs_set_oplock_level(cinode, 0);
383}
384
Pavel Shilovsky316cf942012-05-23 14:31:03 +0400385static 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?*/
Joe Perchesf96637b2013-05-04 22:12:25 -0500406 cifs_dbg(VFS, "1st trans2 resp needs bigbuf\n");
Pavel Shilovsky316cf942012-05-23 14:31:03 +0400407 } 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
Pavel Shilovsky286170a2012-05-25 10:43:58 +0400416static 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, struct cifs_ses *ses)
424{
425 int rc;
426 rc = CIFSSMBNegotiate(xid, ses);
427 if (rc == -EAGAIN) {
428 /* retry only once on 1st time connection */
429 set_credits(ses->server, 1);
430 rc = CIFSSMBNegotiate(xid, ses);
431 if (rc == -EAGAIN)
432 rc = -EHOSTDOWN;
433 }
434 return rc;
435}
436
Pavel Shilovsky24985c52012-09-18 16:20:28 -0700437static unsigned int
438cifs_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
439{
440 __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
441 struct TCP_Server_Info *server = tcon->ses->server;
442 unsigned int wsize;
443
444 /* start with specified wsize, or default */
445 if (volume_info->wsize)
446 wsize = volume_info->wsize;
447 else if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
448 wsize = CIFS_DEFAULT_IOSIZE;
449 else
450 wsize = CIFS_DEFAULT_NON_POSIX_WSIZE;
451
452 /* can server support 24-bit write sizes? (via UNIX extensions) */
453 if (!tcon->unix_ext || !(unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
454 wsize = min_t(unsigned int, wsize, CIFS_MAX_RFC1002_WSIZE);
455
456 /*
457 * no CAP_LARGE_WRITE_X or is signing enabled without CAP_UNIX set?
458 * Limit it to max buffer offered by the server, minus the size of the
459 * WRITEX header, not including the 4 byte RFC1001 length.
460 */
461 if (!(server->capabilities & CAP_LARGE_WRITE_X) ||
Jeff Layton38d77c52013-05-26 07:01:00 -0400462 (!(server->capabilities & CAP_UNIX) && server->sign))
Pavel Shilovsky24985c52012-09-18 16:20:28 -0700463 wsize = min_t(unsigned int, wsize,
464 server->maxBuf - sizeof(WRITE_REQ) + 4);
465
Pavel Shilovsky24985c52012-09-18 16:20:28 -0700466 /* hard limit of CIFS_MAX_WSIZE */
467 wsize = min_t(unsigned int, wsize, CIFS_MAX_WSIZE);
468
469 return wsize;
470}
471
472static unsigned int
473cifs_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
474{
475 __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
476 struct TCP_Server_Info *server = tcon->ses->server;
477 unsigned int rsize, defsize;
478
479 /*
480 * Set default value...
481 *
482 * HACK alert! Ancient servers have very small buffers. Even though
483 * MS-CIFS indicates that servers are only limited by the client's
484 * bufsize for reads, testing against win98se shows that it throws
485 * INVALID_PARAMETER errors if you try to request too large a read.
486 * OS/2 just sends back short reads.
487 *
488 * If the server doesn't advertise CAP_LARGE_READ_X, then assume that
489 * it can't handle a read request larger than its MaxBufferSize either.
490 */
491 if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_READ_CAP))
492 defsize = CIFS_DEFAULT_IOSIZE;
493 else if (server->capabilities & CAP_LARGE_READ_X)
494 defsize = CIFS_DEFAULT_NON_POSIX_RSIZE;
495 else
496 defsize = server->maxBuf - sizeof(READ_RSP);
497
498 rsize = volume_info->rsize ? volume_info->rsize : defsize;
499
500 /*
501 * no CAP_LARGE_READ_X? Then MS-CIFS states that we must limit this to
502 * the client's MaxBufferSize.
503 */
504 if (!(server->capabilities & CAP_LARGE_READ_X))
505 rsize = min_t(unsigned int, CIFSMaxBufSize, rsize);
506
Pavel Shilovsky24985c52012-09-18 16:20:28 -0700507 /* hard limit of CIFS_MAX_RSIZE */
508 rsize = min_t(unsigned int, rsize, CIFS_MAX_RSIZE);
509
510 return rsize;
511}
512
Pavel Shilovskyaf4281d2012-05-27 20:48:35 +0400513static void
514cifs_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
515{
516 CIFSSMBQFSDeviceInfo(xid, tcon);
517 CIFSSMBQFSAttributeInfo(xid, tcon);
518}
519
Pavel Shilovsky68889f22012-05-25 14:40:22 +0400520static int
521cifs_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
522 struct cifs_sb_info *cifs_sb, const char *full_path)
523{
524 int rc;
525 FILE_ALL_INFO *file_info;
526
527 file_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
528 if (file_info == NULL)
529 return -ENOMEM;
530
531 rc = CIFSSMBQPathInfo(xid, tcon, full_path, file_info,
532 0 /* not legacy */, cifs_sb->local_nls,
533 cifs_sb->mnt_cifs_flags &
534 CIFS_MOUNT_MAP_SPECIAL_CHR);
535
536 if (rc == -EOPNOTSUPP || rc == -EINVAL)
537 rc = SMBQueryInformation(xid, tcon, full_path, file_info,
538 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
539 CIFS_MOUNT_MAP_SPECIAL_CHR);
540 kfree(file_info);
541 return rc;
542}
543
Pavel Shilovsky1208ef12012-05-27 17:34:43 +0400544static int
545cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
546 struct cifs_sb_info *cifs_sb, const char *full_path,
Pavel Shilovskyeb85d94b2013-10-23 17:49:47 +0400547 FILE_ALL_INFO *data, bool *adjustTZ, bool *symlink)
Pavel Shilovsky1208ef12012-05-27 17:34:43 +0400548{
549 int rc;
550
Pavel Shilovskyeb85d94b2013-10-23 17:49:47 +0400551 *symlink = false;
552
Pavel Shilovsky1208ef12012-05-27 17:34:43 +0400553 /* could do find first instead but this returns more info */
554 rc = CIFSSMBQPathInfo(xid, tcon, full_path, data, 0 /* not legacy */,
555 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
556 CIFS_MOUNT_MAP_SPECIAL_CHR);
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, data,
564 cifs_sb->local_nls,
565 cifs_sb->mnt_cifs_flags &
566 CIFS_MOUNT_MAP_SPECIAL_CHR);
567 *adjustTZ = true;
568 }
Pavel Shilovskyeb85d94b2013-10-23 17:49:47 +0400569
570 if (!rc && (le32_to_cpu(data->Attributes) & ATTR_REPARSE)) {
571 int tmprc;
572 int oplock = 0;
Pavel Shilovskyd81b8a42014-01-16 15:53:36 +0400573 struct cifs_fid fid;
574 struct cifs_open_parms oparms;
575
576 oparms.tcon = tcon;
577 oparms.cifs_sb = cifs_sb;
578 oparms.desired_access = FILE_READ_ATTRIBUTES;
579 oparms.create_options = 0;
580 oparms.disposition = FILE_OPEN;
581 oparms.path = full_path;
582 oparms.fid = &fid;
583 oparms.reconnect = false;
Pavel Shilovskyeb85d94b2013-10-23 17:49:47 +0400584
585 /* Need to check if this is a symbolic link or not */
Pavel Shilovskyd81b8a42014-01-16 15:53:36 +0400586 tmprc = CIFS_open(xid, &oparms, &oplock, NULL);
Pavel Shilovskyeb85d94b2013-10-23 17:49:47 +0400587 if (tmprc == -EOPNOTSUPP)
588 *symlink = true;
589 else
Pavel Shilovskyd81b8a42014-01-16 15:53:36 +0400590 CIFSSMBClose(xid, tcon, fid.netfid);
Pavel Shilovskyeb85d94b2013-10-23 17:49:47 +0400591 }
592
Pavel Shilovsky1208ef12012-05-27 17:34:43 +0400593 return rc;
594}
595
596static int
597cifs_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
598 struct cifs_sb_info *cifs_sb, const char *full_path,
599 u64 *uniqueid, FILE_ALL_INFO *data)
600{
601 /*
602 * We can not use the IndexNumber field by default from Windows or
603 * Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA
604 * CIFS spec claims that this value is unique within the scope of a
605 * share, and the windows docs hint that it's actually unique
606 * per-machine.
607 *
608 * There may be higher info levels that work but are there Windows
609 * server or network appliances for which IndexNumber field is not
610 * guaranteed unique?
611 */
612 return CIFSGetSrvInodeNumber(xid, tcon, full_path, uniqueid,
613 cifs_sb->local_nls,
614 cifs_sb->mnt_cifs_flags &
615 CIFS_MOUNT_MAP_SPECIAL_CHR);
616}
617
Pavel Shilovsky4ad65042012-09-18 16:20:26 -0700618static int
619cifs_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
620 struct cifs_fid *fid, FILE_ALL_INFO *data)
621{
622 return CIFSSMBQFileInfo(xid, tcon, fid->netfid, data);
623}
624
Pavel Shilovsky44c58182012-05-28 14:16:31 +0400625static void
626cifs_clear_stats(struct cifs_tcon *tcon)
627{
628#ifdef CONFIG_CIFS_STATS
629 atomic_set(&tcon->stats.cifs_stats.num_writes, 0);
630 atomic_set(&tcon->stats.cifs_stats.num_reads, 0);
631 atomic_set(&tcon->stats.cifs_stats.num_flushes, 0);
632 atomic_set(&tcon->stats.cifs_stats.num_oplock_brks, 0);
633 atomic_set(&tcon->stats.cifs_stats.num_opens, 0);
634 atomic_set(&tcon->stats.cifs_stats.num_posixopens, 0);
635 atomic_set(&tcon->stats.cifs_stats.num_posixmkdirs, 0);
636 atomic_set(&tcon->stats.cifs_stats.num_closes, 0);
637 atomic_set(&tcon->stats.cifs_stats.num_deletes, 0);
638 atomic_set(&tcon->stats.cifs_stats.num_mkdirs, 0);
639 atomic_set(&tcon->stats.cifs_stats.num_rmdirs, 0);
640 atomic_set(&tcon->stats.cifs_stats.num_renames, 0);
641 atomic_set(&tcon->stats.cifs_stats.num_t2renames, 0);
642 atomic_set(&tcon->stats.cifs_stats.num_ffirst, 0);
643 atomic_set(&tcon->stats.cifs_stats.num_fnext, 0);
644 atomic_set(&tcon->stats.cifs_stats.num_fclose, 0);
645 atomic_set(&tcon->stats.cifs_stats.num_hardlinks, 0);
646 atomic_set(&tcon->stats.cifs_stats.num_symlinks, 0);
647 atomic_set(&tcon->stats.cifs_stats.num_locks, 0);
648 atomic_set(&tcon->stats.cifs_stats.num_acl_get, 0);
649 atomic_set(&tcon->stats.cifs_stats.num_acl_set, 0);
650#endif
651}
652
653static void
654cifs_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
655{
656#ifdef CONFIG_CIFS_STATS
657 seq_printf(m, " Oplocks breaks: %d",
658 atomic_read(&tcon->stats.cifs_stats.num_oplock_brks));
659 seq_printf(m, "\nReads: %d Bytes: %llu",
660 atomic_read(&tcon->stats.cifs_stats.num_reads),
661 (long long)(tcon->bytes_read));
662 seq_printf(m, "\nWrites: %d Bytes: %llu",
663 atomic_read(&tcon->stats.cifs_stats.num_writes),
664 (long long)(tcon->bytes_written));
665 seq_printf(m, "\nFlushes: %d",
666 atomic_read(&tcon->stats.cifs_stats.num_flushes));
667 seq_printf(m, "\nLocks: %d HardLinks: %d Symlinks: %d",
668 atomic_read(&tcon->stats.cifs_stats.num_locks),
669 atomic_read(&tcon->stats.cifs_stats.num_hardlinks),
670 atomic_read(&tcon->stats.cifs_stats.num_symlinks));
671 seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
672 atomic_read(&tcon->stats.cifs_stats.num_opens),
673 atomic_read(&tcon->stats.cifs_stats.num_closes),
674 atomic_read(&tcon->stats.cifs_stats.num_deletes));
675 seq_printf(m, "\nPosix Opens: %d Posix Mkdirs: %d",
676 atomic_read(&tcon->stats.cifs_stats.num_posixopens),
677 atomic_read(&tcon->stats.cifs_stats.num_posixmkdirs));
678 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
679 atomic_read(&tcon->stats.cifs_stats.num_mkdirs),
680 atomic_read(&tcon->stats.cifs_stats.num_rmdirs));
681 seq_printf(m, "\nRenames: %d T2 Renames %d",
682 atomic_read(&tcon->stats.cifs_stats.num_renames),
683 atomic_read(&tcon->stats.cifs_stats.num_t2renames));
684 seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
685 atomic_read(&tcon->stats.cifs_stats.num_ffirst),
686 atomic_read(&tcon->stats.cifs_stats.num_fnext),
687 atomic_read(&tcon->stats.cifs_stats.num_fclose));
688#endif
689}
690
Pavel Shilovskyf4367202012-03-17 11:41:12 +0300691static void
692cifs_mkdir_setinfo(struct inode *inode, const char *full_path,
693 struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
694 const unsigned int xid)
695{
696 FILE_BASIC_INFO info;
697 struct cifsInodeInfo *cifsInode;
698 u32 dosattrs;
699 int rc;
700
701 memset(&info, 0, sizeof(info));
702 cifsInode = CIFS_I(inode);
703 dosattrs = cifsInode->cifsAttrs|ATTR_READONLY;
704 info.Attributes = cpu_to_le32(dosattrs);
705 rc = CIFSSMBSetPathInfo(xid, tcon, full_path, &info, cifs_sb->local_nls,
706 cifs_sb->mnt_cifs_flags &
707 CIFS_MOUNT_MAP_SPECIAL_CHR);
708 if (rc == 0)
709 cifsInode->cifsAttrs = dosattrs;
710}
711
Pavel Shilovskyfb1214e2012-09-18 16:20:26 -0700712static int
Pavel Shilovsky226730b2013-07-05 12:00:30 +0400713cifs_open_file(const unsigned int xid, struct cifs_open_parms *oparms,
714 __u32 *oplock, FILE_ALL_INFO *buf)
Pavel Shilovskyfb1214e2012-09-18 16:20:26 -0700715{
Pavel Shilovsky226730b2013-07-05 12:00:30 +0400716 if (!(oparms->tcon->ses->capabilities & CAP_NT_SMBS))
717 return SMBLegacyOpen(xid, oparms->tcon, oparms->path,
718 oparms->disposition,
719 oparms->desired_access,
720 oparms->create_options,
721 &oparms->fid->netfid, oplock, buf,
722 oparms->cifs_sb->local_nls,
723 oparms->cifs_sb->mnt_cifs_flags
Pavel Shilovskyfb1214e2012-09-18 16:20:26 -0700724 & CIFS_MOUNT_MAP_SPECIAL_CHR);
Pavel Shilovskyd81b8a42014-01-16 15:53:36 +0400725 return CIFS_open(xid, oparms, oplock, buf);
Pavel Shilovskyfb1214e2012-09-18 16:20:26 -0700726}
727
728static void
729cifs_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
730{
731 struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode);
732 cfile->fid.netfid = fid->netfid;
733 cifs_set_oplock_level(cinode, oplock);
Pavel Shilovsky18cceb62013-09-05 13:01:06 +0400734 cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
Pavel Shilovskyfb1214e2012-09-18 16:20:26 -0700735}
736
Pavel Shilovsky760ad0c2012-09-25 11:00:07 +0400737static void
Pavel Shilovsky0ff78a22012-09-18 16:20:26 -0700738cifs_close_file(const unsigned int xid, struct cifs_tcon *tcon,
739 struct cifs_fid *fid)
740{
Pavel Shilovsky760ad0c2012-09-25 11:00:07 +0400741 CIFSSMBClose(xid, tcon, fid->netfid);
Pavel Shilovsky0ff78a22012-09-18 16:20:26 -0700742}
743
Pavel Shilovsky1d8c4c02012-09-18 16:20:27 -0700744static int
745cifs_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
746 struct cifs_fid *fid)
747{
748 return CIFSSMBFlush(xid, tcon, fid->netfid);
749}
750
Pavel Shilovskyf9c6e232012-09-18 16:20:29 -0700751static int
752cifs_sync_read(const unsigned int xid, struct cifsFileInfo *cfile,
753 struct cifs_io_parms *parms, unsigned int *bytes_read,
754 char **buf, int *buf_type)
755{
756 parms->netfid = cfile->fid.netfid;
757 return CIFSSMBRead(xid, parms, bytes_read, buf, buf_type);
758}
759
Pavel Shilovskyba9ad7252012-09-18 16:20:30 -0700760static int
761cifs_sync_write(const unsigned int xid, struct cifsFileInfo *cfile,
762 struct cifs_io_parms *parms, unsigned int *written,
763 struct kvec *iov, unsigned long nr_segs)
764{
765
766 parms->netfid = cfile->fid.netfid;
767 return CIFSSMBWrite2(xid, parms, written, iov, nr_segs);
768}
769
Pavel Shilovsky6bdf6db2012-09-18 16:20:32 -0700770static int
771smb_set_file_info(struct inode *inode, const char *full_path,
772 FILE_BASIC_INFO *buf, const unsigned int xid)
773{
774 int oplock = 0;
775 int rc;
Pavel Shilovsky6bdf6db2012-09-18 16:20:32 -0700776 __u32 netpid;
Pavel Shilovskyd81b8a42014-01-16 15:53:36 +0400777 struct cifs_fid fid;
778 struct cifs_open_parms oparms;
Pavel Shilovsky6bdf6db2012-09-18 16:20:32 -0700779 struct cifsFileInfo *open_file;
780 struct cifsInodeInfo *cinode = CIFS_I(inode);
781 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
782 struct tcon_link *tlink = NULL;
783 struct cifs_tcon *tcon;
Pavel Shilovsky6bdf6db2012-09-18 16:20:32 -0700784
785 /* if the file is already open for write, just use that fileid */
786 open_file = find_writable_file(cinode, true);
787 if (open_file) {
Pavel Shilovskyd81b8a42014-01-16 15:53:36 +0400788 fid.netfid = open_file->fid.netfid;
Pavel Shilovsky6bdf6db2012-09-18 16:20:32 -0700789 netpid = open_file->pid;
790 tcon = tlink_tcon(open_file->tlink);
791 goto set_via_filehandle;
792 }
793
794 tlink = cifs_sb_tlink(cifs_sb);
795 if (IS_ERR(tlink)) {
796 rc = PTR_ERR(tlink);
797 tlink = NULL;
798 goto out;
799 }
800 tcon = tlink_tcon(tlink);
801
Jeff Layton281e2e72013-05-26 07:00:56 -0400802 rc = CIFSSMBSetPathInfo(xid, tcon, full_path, buf, cifs_sb->local_nls,
Pavel Shilovsky6bdf6db2012-09-18 16:20:32 -0700803 cifs_sb->mnt_cifs_flags &
804 CIFS_MOUNT_MAP_SPECIAL_CHR);
Jeff Layton281e2e72013-05-26 07:00:56 -0400805 if (rc == 0) {
806 cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
807 goto out;
808 } else if (rc != -EOPNOTSUPP && rc != -EINVAL) {
809 goto out;
Pavel Shilovsky6bdf6db2012-09-18 16:20:32 -0700810 }
811
Pavel Shilovskyd81b8a42014-01-16 15:53:36 +0400812 oparms.tcon = tcon;
813 oparms.cifs_sb = cifs_sb;
814 oparms.desired_access = SYNCHRONIZE | FILE_WRITE_ATTRIBUTES;
815 oparms.create_options = CREATE_NOT_DIR;
816 oparms.disposition = FILE_OPEN;
817 oparms.path = full_path;
818 oparms.fid = &fid;
819 oparms.reconnect = false;
Pavel Shilovsky6bdf6db2012-09-18 16:20:32 -0700820
Pavel Shilovskyd81b8a42014-01-16 15:53:36 +0400821 cifs_dbg(FYI, "calling SetFileInfo since SetPathInfo for times not supported by this server\n");
822 rc = CIFS_open(xid, &oparms, &oplock, NULL);
Pavel Shilovsky6bdf6db2012-09-18 16:20:32 -0700823 if (rc != 0) {
824 if (rc == -EIO)
825 rc = -EINVAL;
826 goto out;
827 }
828
829 netpid = current->tgid;
830
831set_via_filehandle:
Pavel Shilovskyd81b8a42014-01-16 15:53:36 +0400832 rc = CIFSSMBSetFileInfo(xid, tcon, buf, fid.netfid, netpid);
Pavel Shilovsky6bdf6db2012-09-18 16:20:32 -0700833 if (!rc)
834 cinode->cifsAttrs = le32_to_cpu(buf->Attributes);
835
836 if (open_file == NULL)
Pavel Shilovskyd81b8a42014-01-16 15:53:36 +0400837 CIFSSMBClose(xid, tcon, fid.netfid);
Pavel Shilovsky6bdf6db2012-09-18 16:20:32 -0700838 else
839 cifsFileInfo_put(open_file);
840out:
841 if (tlink != NULL)
842 cifs_put_tlink(tlink);
843 return rc;
844}
845
Pavel Shilovsky92fc65a2012-09-18 16:20:32 -0700846static int
Steve Frenchc7f508a2013-10-14 15:27:32 -0500847cifs_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
848 struct cifsFileInfo *cfile)
849{
850 return CIFSSMB_set_compression(xid, tcon, cfile->fid.netfid);
851}
852
853static int
Pavel Shilovsky92fc65a2012-09-18 16:20:32 -0700854cifs_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
855 const char *path, struct cifs_sb_info *cifs_sb,
856 struct cifs_fid *fid, __u16 search_flags,
857 struct cifs_search_info *srch_inf)
858{
Shirish Pargaonkarc052e2b2012-09-28 12:21:14 -0500859 return CIFSFindFirst(xid, tcon, path, cifs_sb,
860 &fid->netfid, search_flags, srch_inf, true);
Pavel Shilovsky92fc65a2012-09-18 16:20:32 -0700861}
862
863static int
864cifs_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
865 struct cifs_fid *fid, __u16 search_flags,
866 struct cifs_search_info *srch_inf)
867{
868 return CIFSFindNext(xid, tcon, fid->netfid, search_flags, srch_inf);
869}
870
871static int
872cifs_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
873 struct cifs_fid *fid)
874{
875 return CIFSFindClose(xid, tcon, fid->netfid);
876}
877
Pavel Shilovsky95a3f2f2012-09-18 16:20:33 -0700878static int
879cifs_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
880 struct cifsInodeInfo *cinode)
881{
882 return CIFSSMBLock(0, tcon, fid->netfid, current->tgid, 0, 0, 0, 0,
883 LOCKING_ANDX_OPLOCK_RELEASE, false,
Pavel Shilovsky18cceb62013-09-05 13:01:06 +0400884 CIFS_CACHE_READ(cinode) ? 1 : 0);
Pavel Shilovsky95a3f2f2012-09-18 16:20:33 -0700885}
886
Pavel Shilovsky76ec5e32012-09-18 16:20:33 -0700887static int
888cifs_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
889 struct kstatfs *buf)
890{
891 int rc = -EOPNOTSUPP;
892
893 buf->f_type = CIFS_MAGIC_NUMBER;
894
895 /*
896 * We could add a second check for a QFS Unix capability bit
897 */
898 if ((tcon->ses->capabilities & CAP_UNIX) &&
899 (CIFS_POSIX_EXTENSIONS & le64_to_cpu(tcon->fsUnixInfo.Capability)))
900 rc = CIFSSMBQFSPosixInfo(xid, tcon, buf);
901
902 /*
903 * Only need to call the old QFSInfo if failed on newer one,
904 * e.g. by OS/2.
905 **/
906 if (rc && (tcon->ses->capabilities & CAP_NT_SMBS))
907 rc = CIFSSMBQFSInfo(xid, tcon, buf);
908
909 /*
910 * Some old Windows servers also do not support level 103, retry with
911 * older level one if old server failed the previous call or we
912 * bypassed it because we detected that this was an older LANMAN sess
913 */
914 if (rc)
915 rc = SMBOldQFSInfo(xid, tcon, buf);
916 return rc;
917}
918
Pavel Shilovskyd39a4f72012-09-19 06:22:43 -0700919static int
920cifs_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
921 __u64 length, __u32 type, int lock, int unlock, bool wait)
922{
923 return CIFSSMBLock(xid, tlink_tcon(cfile->tlink), cfile->fid.netfid,
924 current->tgid, length, offset, unlock, lock,
925 (__u8)type, wait, 0);
926}
927
Pavel Shilovskyd244bf22013-08-14 19:25:22 +0400928static int
Sachin Prabhu924e3fa2013-12-02 16:37:43 +0000929cifs_unix_dfs_readlink(const unsigned int xid, struct cifs_tcon *tcon,
930 const unsigned char *searchName, char **symlinkinfo,
931 const struct nls_table *nls_codepage)
932{
933#ifdef CONFIG_CIFS_DFS_UPCALL
934 int rc;
935 unsigned int num_referrals = 0;
936 struct dfs_info3_param *referrals = NULL;
937
938 rc = get_dfs_path(xid, tcon->ses, searchName, nls_codepage,
939 &num_referrals, &referrals, 0);
940
941 if (!rc && num_referrals > 0) {
942 *symlinkinfo = kstrndup(referrals->node_name,
943 strlen(referrals->node_name),
944 GFP_KERNEL);
945 if (!*symlinkinfo)
946 rc = -ENOMEM;
947 free_dfs_info_array(referrals, num_referrals);
948 }
949 return rc;
950#else /* No DFS support */
951 return -EREMOTE;
952#endif
953}
954
955static int
Pavel Shilovskyd244bf22013-08-14 19:25:22 +0400956cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
957 const char *full_path, char **target_path,
958 struct cifs_sb_info *cifs_sb)
959{
960 int rc;
961 int oplock = 0;
Pavel Shilovskyd81b8a42014-01-16 15:53:36 +0400962 struct cifs_fid fid;
963 struct cifs_open_parms oparms;
Pavel Shilovskyd244bf22013-08-14 19:25:22 +0400964
965 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
966
Sachin Prabhu0ecdb4f2013-11-27 13:27:12 +0000967 /* Check for unix extensions */
968 if (cap_unix(tcon->ses)) {
969 rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, target_path,
970 cifs_sb->local_nls);
Sachin Prabhu924e3fa2013-12-02 16:37:43 +0000971 if (rc == -EREMOTE)
972 rc = cifs_unix_dfs_readlink(xid, tcon, full_path,
973 target_path,
974 cifs_sb->local_nls);
975
Sachin Prabhu0ecdb4f2013-11-27 13:27:12 +0000976 goto out;
977 }
978
Pavel Shilovskyd81b8a42014-01-16 15:53:36 +0400979 oparms.tcon = tcon;
980 oparms.cifs_sb = cifs_sb;
981 oparms.desired_access = FILE_READ_ATTRIBUTES;
982 oparms.create_options = OPEN_REPARSE_POINT;
983 oparms.disposition = FILE_OPEN;
984 oparms.path = full_path;
985 oparms.fid = &fid;
986 oparms.reconnect = false;
987
988 rc = CIFS_open(xid, &oparms, &oplock, NULL);
Pavel Shilovskyd244bf22013-08-14 19:25:22 +0400989 if (rc)
Sachin Prabhu0ecdb4f2013-11-27 13:27:12 +0000990 goto out;
Pavel Shilovskyd244bf22013-08-14 19:25:22 +0400991
Pavel Shilovskyd81b8a42014-01-16 15:53:36 +0400992 rc = CIFSSMBQuerySymLink(xid, tcon, fid.netfid, target_path,
Pavel Shilovskyd244bf22013-08-14 19:25:22 +0400993 cifs_sb->local_nls);
Sachin Prabhu0ecdb4f2013-11-27 13:27:12 +0000994 if (rc)
995 goto out_close;
Pavel Shilovskyd244bf22013-08-14 19:25:22 +0400996
997 convert_delimiter(*target_path, '/');
Sachin Prabhu0ecdb4f2013-11-27 13:27:12 +0000998out_close:
Pavel Shilovskyd81b8a42014-01-16 15:53:36 +0400999 CIFSSMBClose(xid, tcon, fid.netfid);
Sachin Prabhu0ecdb4f2013-11-27 13:27:12 +00001000out:
1001 if (!rc)
1002 cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
Pavel Shilovskyd244bf22013-08-14 19:25:22 +04001003 return rc;
1004}
1005
Pavel Shilovsky53ef1012013-09-05 16:11:28 +04001006static bool
1007cifs_is_read_op(__u32 oplock)
1008{
1009 return oplock == OPLOCK_READ;
1010}
1011
Jeff Layton23db65f2012-05-15 12:20:51 -04001012struct smb_version_operations smb1_operations = {
Jeff Layton121b0462012-05-15 12:21:10 -04001013 .send_cancel = send_nt_cancel,
Pavel Shilovsky55157df2012-02-28 14:04:17 +03001014 .compare_fids = cifs_compare_fids,
Pavel Shilovsky082d0642012-05-17 12:18:21 +04001015 .setup_request = cifs_setup_request,
Pavel Shilovsky45740842012-06-01 14:26:18 +04001016 .setup_async_request = cifs_setup_async_request,
Pavel Shilovsky082d0642012-05-17 12:18:21 +04001017 .check_receive = cifs_check_receive,
Pavel Shilovsky45275782012-05-17 17:53:29 +04001018 .add_credits = cifs_add_credits,
1019 .set_credits = cifs_set_credits,
1020 .get_credits_field = cifs_get_credits_field,
Pavel Shilovskya891f0f2012-05-23 16:14:34 +04001021 .get_credits = cifs_get_credits,
Pavel Shilovsky88257362012-05-23 14:01:59 +04001022 .get_next_mid = cifs_get_next_mid,
Pavel Shilovskyeb378712012-05-17 13:02:51 +04001023 .read_data_offset = cifs_read_data_offset,
1024 .read_data_length = cifs_read_data_length,
1025 .map_error = map_smb_to_linux_error,
Pavel Shilovsky8aa26f32012-05-17 13:25:35 +04001026 .find_mid = cifs_find_mid,
1027 .check_message = checkSMB,
1028 .dump_detail = cifs_dump_detail,
Pavel Shilovsky44c58182012-05-28 14:16:31 +04001029 .clear_stats = cifs_clear_stats,
1030 .print_stats = cifs_print_stats,
Pavel Shilovsky8aa26f32012-05-17 13:25:35 +04001031 .is_oplock_break = is_valid_oplock_break,
Sachin Prabhuc11f1df2014-03-11 16:11:47 +00001032 .downgrade_oplock = cifs_downgrade_oplock,
Pavel Shilovsky316cf942012-05-23 14:31:03 +04001033 .check_trans2 = cifs_check_trans2,
Pavel Shilovsky286170a2012-05-25 10:43:58 +04001034 .need_neg = cifs_need_neg,
1035 .negotiate = cifs_negotiate,
Pavel Shilovsky24985c52012-09-18 16:20:28 -07001036 .negotiate_wsize = cifs_negotiate_wsize,
1037 .negotiate_rsize = cifs_negotiate_rsize,
Pavel Shilovsky58c45c52012-05-25 10:54:49 +04001038 .sess_setup = CIFS_SessSetup,
1039 .logoff = CIFSSMBLogoff,
Pavel Shilovsky2e6e02a2012-05-25 11:11:39 +04001040 .tree_connect = CIFSTCon,
1041 .tree_disconnect = CIFSSMBTDis,
Pavel Shilovskyb669f332012-05-27 20:21:53 +04001042 .get_dfs_refer = CIFSGetDFSRefer,
Pavel Shilovskyaf4281d2012-05-27 20:48:35 +04001043 .qfs_tcon = cifs_qfs_tcon,
Pavel Shilovsky68889f22012-05-25 14:40:22 +04001044 .is_path_accessible = cifs_is_path_accessible,
Pavel Shilovsky1208ef12012-05-27 17:34:43 +04001045 .query_path_info = cifs_query_path_info,
Pavel Shilovsky4ad65042012-09-18 16:20:26 -07001046 .query_file_info = cifs_query_file_info,
Pavel Shilovsky1208ef12012-05-27 17:34:43 +04001047 .get_srv_inum = cifs_get_srv_inum,
Pavel Shilovskyd1433412012-09-18 16:20:31 -07001048 .set_path_size = CIFSSMBSetEOF,
1049 .set_file_size = CIFSSMBSetFileSize,
Pavel Shilovsky6bdf6db2012-09-18 16:20:32 -07001050 .set_file_info = smb_set_file_info,
Steve Frenchc7f508a2013-10-14 15:27:32 -05001051 .set_compression = cifs_set_compression,
Pavel Shilovskyf6d76172012-05-25 14:47:16 +04001052 .echo = CIFSSMBEcho,
Pavel Shilovskyf4367202012-03-17 11:41:12 +03001053 .mkdir = CIFSSMBMkDir,
1054 .mkdir_setinfo = cifs_mkdir_setinfo,
Pavel Shilovskyf958ca52012-07-10 16:14:18 +04001055 .rmdir = CIFSSMBRmDir,
Pavel Shilovskyed6875e2012-09-18 16:20:25 -07001056 .unlink = CIFSSMBDelFile,
1057 .rename_pending_delete = cifs_rename_pending_delete,
Pavel Shilovsky8ceb9842012-09-18 16:20:30 -07001058 .rename = CIFSSMBRename,
Steve Frenchd6e906f2012-09-18 16:20:31 -07001059 .create_hardlink = CIFSCreateHardLink,
Pavel Shilovskyd244bf22013-08-14 19:25:22 +04001060 .query_symlink = cifs_query_symlink,
Pavel Shilovskyfb1214e2012-09-18 16:20:26 -07001061 .open = cifs_open_file,
1062 .set_fid = cifs_set_fid,
Pavel Shilovsky0ff78a22012-09-18 16:20:26 -07001063 .close = cifs_close_file,
Pavel Shilovsky1d8c4c02012-09-18 16:20:27 -07001064 .flush = cifs_flush_file,
Pavel Shilovskyfc9c5962012-09-18 16:20:28 -07001065 .async_readv = cifs_async_readv,
Pavel Shilovskyc9de5c82012-09-18 16:20:29 -07001066 .async_writev = cifs_async_writev,
Pavel Shilovskyf9c6e232012-09-18 16:20:29 -07001067 .sync_read = cifs_sync_read,
Pavel Shilovskyba9ad7252012-09-18 16:20:30 -07001068 .sync_write = cifs_sync_write,
Pavel Shilovsky92fc65a2012-09-18 16:20:32 -07001069 .query_dir_first = cifs_query_dir_first,
1070 .query_dir_next = cifs_query_dir_next,
1071 .close_dir = cifs_close_dir,
1072 .calc_smb_size = smbCalcSize,
Pavel Shilovsky95a3f2f2012-09-18 16:20:33 -07001073 .oplock_response = cifs_oplock_response,
Pavel Shilovsky76ec5e32012-09-18 16:20:33 -07001074 .queryfs = cifs_queryfs,
Pavel Shilovskyd39a4f72012-09-19 06:22:43 -07001075 .mand_lock = cifs_mand_lock,
1076 .mand_unlock_range = cifs_unlock_range,
1077 .push_mand_locks = cifs_push_mandatory_locks,
Sachin Prabhub5be1a12013-11-25 17:09:49 +00001078 .query_mf_symlink = cifs_query_mf_symlink,
Sachin Prabhucbb0aba2013-11-25 17:09:52 +00001079 .create_mf_symlink = cifs_create_mf_symlink,
Pavel Shilovsky53ef1012013-09-05 16:11:28 +04001080 .is_read_op = cifs_is_read_op,
Steve Frenchd979f3b2014-02-01 23:27:18 -06001081#ifdef CONFIG_CIFS_XATTR
1082 .query_all_EAs = CIFSSMBQAllEAs,
1083 .set_EA = CIFSSMBSetEA,
1084#endif /* CIFS_XATTR */
Steve French83e3bc22014-02-02 23:31:47 -06001085#ifdef CONFIG_CIFS_ACL
1086 .get_acl = get_cifs_acl,
Steve French42eacf92014-02-10 14:08:16 -06001087 .get_acl_by_fid = get_cifs_acl_by_fid,
Steve French83e3bc22014-02-02 23:31:47 -06001088 .set_acl = set_cifs_acl,
1089#endif /* CIFS_ACL */
Jeff Layton23db65f2012-05-15 12:20:51 -04001090};
1091
1092struct smb_version_values smb1_values = {
1093 .version_string = SMB1_VERSION_STRING,
Pavel Shilovsky106dc532012-02-28 14:23:34 +03001094 .large_lock_type = LOCKING_ANDX_LARGE_FILES,
1095 .exclusive_lock_type = 0,
1096 .shared_lock_type = LOCKING_ANDX_SHARED_LOCK,
1097 .unlock_lock_type = 0,
Pavel Shilovsky1887f602012-05-17 12:45:31 +04001098 .header_size = sizeof(struct smb_hdr),
1099 .max_header_size = MAX_CIFS_HDR_SIZE,
Pavel Shilovskyeb378712012-05-17 13:02:51 +04001100 .read_rsp_size = sizeof(READ_RSP),
Pavel Shilovsky2dc7e1c2011-12-26 22:53:34 +04001101 .lock_cmd = cpu_to_le16(SMB_COM_LOCKING_ANDX),
Pavel Shilovsky29e20f92012-07-13 13:58:14 +04001102 .cap_unix = CAP_UNIX,
1103 .cap_nt_find = CAP_NT_SMBS | CAP_NT_FIND,
1104 .cap_large_files = CAP_LARGE_FILES,
Jeff Layton50285882013-06-27 12:45:00 -04001105 .signing_enabled = SECMODE_SIGN_ENABLED,
1106 .signing_required = SECMODE_SIGN_REQUIRED,
Jeff Layton23db65f2012-05-15 12:20:51 -04001107};