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[CIFS] Fix new POSIX Locking for setting lock_type correctly on unlock
[deliverable/linux.git] / fs / cifs / connect.c
CommitLineData
1da177e4
LT		 1/*
2 * fs/cifs/connect.c
3 *
5815449d 4 * Copyright (C) International Business Machines Corp., 2002,2006
1da177e4
LT		 5 * Author(s): Steve French (sfrench@us.ibm.com)
6 *
7 * This library is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU Lesser General Public License as published
9 * by the Free Software Foundation; either version 2.1 of the License, or
10 * (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
15 * the GNU Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public License
18 * along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21#include <linux/fs.h>
22#include <linux/net.h>
23#include <linux/string.h>
24#include <linux/list.h>
25#include <linux/wait.h>
26#include <linux/ipv6.h>
27#include <linux/pagemap.h>
28#include <linux/ctype.h>
29#include <linux/utsname.h>
30#include <linux/mempool.h>
b8643e1b 31#include <linux/delay.h>
f191401f 32#include <linux/completion.h>
0ae0efad 33#include <linux/pagevec.h>
1da177e4
LT		 34#include <asm/uaccess.h>
35#include <asm/processor.h>
36#include "cifspdu.h"
37#include "cifsglob.h"
38#include "cifsproto.h"
39#include "cifs_unicode.h"
40#include "cifs_debug.h"
41#include "cifs_fs_sb.h"
42#include "ntlmssp.h"
43#include "nterr.h"
44#include "rfc1002pdu.h"
a2653eba 45#include "cn_cifs.h"
1da177e4
LT		 46
47#define CIFS_PORT 445
48#define RFC1001_PORT 139
49
f191401f
SF		 50static DECLARE_COMPLETION(cifsd_complete);
51
1da177e4
LT		 52extern void SMBencrypt(unsigned char *passwd, unsigned char *c8,
53 unsigned char *p24);
54extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8,
55 unsigned char *p24);
56
57extern mempool_t *cifs_req_poolp;
58
59struct smb_vol {
60 char *username;
61 char *password;
62 char *domainname;
63 char *UNC;
64 char *UNCip;
65 char *in6_addr; /* ipv6 address as human readable form of in6_addr */
66 char *iocharset; /* local code page for mapping to and from Unicode */
67 char source_rfc1001_name[16]; /* netbios name of client */
a10faeb2 68 char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */
1da177e4
LT		 69 uid_t linux_uid;
70 gid_t linux_gid;
71 mode_t file_mode;
72 mode_t dir_mode;
73 unsigned rw:1;
74 unsigned retry:1;
75 unsigned intr:1;
76 unsigned setuids:1;
77 unsigned noperm:1;
78 unsigned no_psx_acl:1; /* set if posix acl support should be disabled */
0a4b92c0 79 unsigned cifs_acl:1;
1da177e4
LT		 80 unsigned no_xattr:1; /* set if xattr (EA) support should be disabled*/
81 unsigned server_ino:1; /* use inode numbers from server ie UniqueId */
82 unsigned direct_io:1;
6a0b4824 83 unsigned remap:1; /* set to remap seven reserved chars in filenames */
ac67055e 84 unsigned posix_paths:1; /* unset to not ask for posix pathnames. */
d7245c2c 85 unsigned sfu_emul:1;
bf820679
SF		 86 unsigned krb5:1;
87 unsigned ntlm:1;
88 unsigned ntlmv2:1;
89 unsigned nullauth:1; /* attempt to authenticate with null user */
90 unsigned sign:1;
91 unsigned seal:1; /* encrypt */
c46fa8ac
SF		 92 unsigned nocase; /* request case insensitive filenames */
93 unsigned nobrl; /* disable sending byte range locks to srv */
1da177e4
LT		 94 unsigned int rsize;
95 unsigned int wsize;
96 unsigned int sockopt;
97 unsigned short int port;
98};
99
100static int ipv4_connect(struct sockaddr_in *psin_server,
101 struct socket **csocket,
a10faeb2
SF		 102 char * netb_name,
103 char * server_netb_name);
1da177e4
LT		 104static int ipv6_connect(struct sockaddr_in6 *psin_server,
105 struct socket **csocket);
106
107
108 /*
109 * cifs tcp session reconnection
110 *
111 * mark tcp session as reconnecting so temporarily locked
112 * mark all smb sessions as reconnecting for tcp session
113 * reconnect tcp session
114 * wake up waiters on reconnection? - (not needed currently)
115 */
116
117int
118cifs_reconnect(struct TCP_Server_Info *server)
119{
120 int rc = 0;
121 struct list_head *tmp;
122 struct cifsSesInfo *ses;
123 struct cifsTconInfo *tcon;
124 struct mid_q_entry * mid_entry;
125
126 spin_lock(&GlobalMid_Lock);
127 if(server->tcpStatus == CifsExiting) {
128 /* the demux thread will exit normally
129 next time through the loop */
130 spin_unlock(&GlobalMid_Lock);
131 return rc;
132 } else
133 server->tcpStatus = CifsNeedReconnect;
134 spin_unlock(&GlobalMid_Lock);
135 server->maxBuf = 0;
136
e4eb295d 137 cFYI(1, ("Reconnecting tcp session"));
1da177e4
LT		 138
139 /* before reconnecting the tcp session, mark the smb session (uid)
140 and the tid bad so they are not used until reconnected */
141 read_lock(&GlobalSMBSeslock);
142 list_for_each(tmp, &GlobalSMBSessionList) {
143 ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
144 if (ses->server) {
145 if (ses->server == server) {
146 ses->status = CifsNeedReconnect;
147 ses->ipc_tid = 0;
148 }
149 }
150 /* else tcp and smb sessions need reconnection */
151 }
152 list_for_each(tmp, &GlobalTreeConnectionList) {
153 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
154 if((tcon) && (tcon->ses) && (tcon->ses->server == server)) {
155 tcon->tidStatus = CifsNeedReconnect;
156 }
157 }
158 read_unlock(&GlobalSMBSeslock);
159 /* do not want to be sending data on a socket we are freeing */
160 down(&server->tcpSem);
161 if(server->ssocket) {
162 cFYI(1,("State: 0x%x Flags: 0x%lx", server->ssocket->state,
163 server->ssocket->flags));
164 server->ssocket->ops->shutdown(server->ssocket,SEND_SHUTDOWN);
165 cFYI(1,("Post shutdown state: 0x%x Flags: 0x%lx", server->ssocket->state,
166 server->ssocket->flags));
167 sock_release(server->ssocket);
168 server->ssocket = NULL;
169 }
170
171 spin_lock(&GlobalMid_Lock);
172 list_for_each(tmp, &server->pending_mid_q) {
173 mid_entry = list_entry(tmp, struct
174 mid_q_entry,
175 qhead);
176 if(mid_entry) {
177 if(mid_entry->midState == MID_REQUEST_SUBMITTED) {
09d1db5c
SF		 178 /* Mark other intransit requests as needing
179 retry so we do not immediately mark the
180 session bad again (ie after we reconnect
181 below) as they timeout too */
1da177e4
LT		 182 mid_entry->midState = MID_RETRY_NEEDED;
183 }
184 }
185 }
186 spin_unlock(&GlobalMid_Lock);
187 up(&server->tcpSem);
188
189 while ((server->tcpStatus != CifsExiting) && (server->tcpStatus != CifsGood))
190 {
191 if(server->protocolType == IPV6) {
192 rc = ipv6_connect(&server->addr.sockAddr6,&server->ssocket);
193 } else {
194 rc = ipv4_connect(&server->addr.sockAddr,
195 &server->ssocket,
a10faeb2
SF		 196 server->workstation_RFC1001_name,
197 server->server_RFC1001_name);
1da177e4
LT		 198 }
199 if(rc) {
b387eaeb 200 cFYI(1,("reconnect error %d",rc));
0cb766ae 201 msleep(3000);
1da177e4
LT		 202 } else {
203 atomic_inc(&tcpSesReconnectCount);
204 spin_lock(&GlobalMid_Lock);
205 if(server->tcpStatus != CifsExiting)
206 server->tcpStatus = CifsGood;
ad009ac9
SF		 207 server->sequence_number = 0;
208 spin_unlock(&GlobalMid_Lock);
1da177e4
LT		 209 /* atomic_set(&server->inFlight,0);*/
210 wake_up(&server->response_q);
211 }
212 }
213 return rc;
214}
215
e4eb295d
SF		 216/*
217 return codes:
218 0 not a transact2, or all data present
219 >0 transact2 with that much data missing
220 -EINVAL = invalid transact2
221
222 */
223static int check2ndT2(struct smb_hdr * pSMB, unsigned int maxBufSize)
224{
225 struct smb_t2_rsp * pSMBt;
226 int total_data_size;
227 int data_in_this_rsp;
228 int remaining;
229
230 if(pSMB->Command != SMB_COM_TRANSACTION2)
231 return 0;
232
233 /* check for plausible wct, bcc and t2 data and parm sizes */
234 /* check for parm and data offset going beyond end of smb */
235 if(pSMB->WordCount != 10) { /* coalesce_t2 depends on this */
236 cFYI(1,("invalid transact2 word count"));
237 return -EINVAL;
238 }
239
240 pSMBt = (struct smb_t2_rsp *)pSMB;
241
242 total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount);
243 data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount);
244
245 remaining = total_data_size - data_in_this_rsp;
246
247 if(remaining == 0)
248 return 0;
249 else if(remaining < 0) {
250 cFYI(1,("total data %d smaller than data in frame %d",
251 total_data_size, data_in_this_rsp));
252 return -EINVAL;
253 } else {
254 cFYI(1,("missing %d bytes from transact2, check next response",
255 remaining));
256 if(total_data_size > maxBufSize) {
257 cERROR(1,("TotalDataSize %d is over maximum buffer %d",
258 total_data_size,maxBufSize));
259 return -EINVAL;
260 }
261 return remaining;
262 }
263}
264
265static int coalesce_t2(struct smb_hdr * psecond, struct smb_hdr *pTargetSMB)
266{
267 struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond;
268 struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB;
269 int total_data_size;
270 int total_in_buf;
271 int remaining;
272 int total_in_buf2;
273 char * data_area_of_target;
274 char * data_area_of_buf2;
275 __u16 byte_count;
276
277 total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount);
278
279 if(total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) {
280 cFYI(1,("total data sizes of primary and secondary t2 differ"));
281 }
282
283 total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount);
284
285 remaining = total_data_size - total_in_buf;
286
287 if(remaining < 0)
288 return -EINVAL;
289
290 if(remaining == 0) /* nothing to do, ignore */
291 return 0;
292
293 total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount);
294 if(remaining < total_in_buf2) {
295 cFYI(1,("transact2 2nd response contains too much data"));
296 }
297
298 /* find end of first SMB data area */
299 data_area_of_target = (char *)&pSMBt->hdr.Protocol +
300 le16_to_cpu(pSMBt->t2_rsp.DataOffset);
301 /* validate target area */
302
303 data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol +
304 le16_to_cpu(pSMB2->t2_rsp.DataOffset);
305
306 data_area_of_target += total_in_buf;
307
308 /* copy second buffer into end of first buffer */
309 memcpy(data_area_of_target,data_area_of_buf2,total_in_buf2);
310 total_in_buf += total_in_buf2;
311 pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf);
312 byte_count = le16_to_cpu(BCC_LE(pTargetSMB));
313 byte_count += total_in_buf2;
314 BCC_LE(pTargetSMB) = cpu_to_le16(byte_count);
315
70ca734a 316 byte_count = pTargetSMB->smb_buf_length;
e4eb295d
SF		 317 byte_count += total_in_buf2;
318
319 /* BB also add check that we are not beyond maximum buffer size */
320
70ca734a 321 pTargetSMB->smb_buf_length = byte_count;
e4eb295d
SF		 322
323 if(remaining == total_in_buf2) {
324 cFYI(1,("found the last secondary response"));
325 return 0; /* we are done */
326 } else /* more responses to go */
327 return 1;
328
329}
330
1da177e4
LT		 331static int
332cifs_demultiplex_thread(struct TCP_Server_Info *server)
333{
334 int length;
335 unsigned int pdu_length, total_read;
336 struct smb_hdr *smb_buffer = NULL;
b8643e1b
SF		 337 struct smb_hdr *bigbuf = NULL;
338 struct smb_hdr *smallbuf = NULL;
1da177e4
LT		 339 struct msghdr smb_msg;
340 struct kvec iov;
341 struct socket *csocket = server->ssocket;
342 struct list_head *tmp;
343 struct cifsSesInfo *ses;
344 struct task_struct *task_to_wake = NULL;
345 struct mid_q_entry *mid_entry;
70ca734a 346 char temp;
b8643e1b 347 int isLargeBuf = FALSE;
e4eb295d
SF		 348 int isMultiRsp;
349 int reconnect;
1da177e4
LT		 350
351 daemonize("cifsd");
352 allow_signal(SIGKILL);
353 current->flags |= PF_MEMALLOC;
354 server->tsk = current; /* save process info to wake at shutdown */
355 cFYI(1, ("Demultiplex PID: %d", current->pid));
356 write_lock(&GlobalSMBSeslock);
357 atomic_inc(&tcpSesAllocCount);
358 length = tcpSesAllocCount.counter;
359 write_unlock(&GlobalSMBSeslock);
f191401f 360 complete(&cifsd_complete);
1da177e4
LT		 361 if(length > 1) {
362 mempool_resize(cifs_req_poolp,
363 length + cifs_min_rcv,
364 GFP_KERNEL);
365 }
366
367 while (server->tcpStatus != CifsExiting) {
ede1327e
SF		 368 if (try_to_freeze())
369 continue;
b8643e1b
SF		 370 if (bigbuf == NULL) {
371 bigbuf = cifs_buf_get();
372 if(bigbuf == NULL) {
373 cERROR(1,("No memory for large SMB response"));
374 msleep(3000);
375 /* retry will check if exiting */
376 continue;
377 }
378 } else if(isLargeBuf) {
379 /* we are reusing a dirtry large buf, clear its start */
380 memset(bigbuf, 0, sizeof (struct smb_hdr));
1da177e4 381 }
b8643e1b
SF		 382
383 if (smallbuf == NULL) {
384 smallbuf = cifs_small_buf_get();
385 if(smallbuf == NULL) {
386 cERROR(1,("No memory for SMB response"));
387 msleep(1000);
388 /* retry will check if exiting */
389 continue;
390 }
391 /* beginning of smb buffer is cleared in our buf_get */
392 } else /* if existing small buf clear beginning */
393 memset(smallbuf, 0, sizeof (struct smb_hdr));
394
395 isLargeBuf = FALSE;
e4eb295d 396 isMultiRsp = FALSE;
b8643e1b 397 smb_buffer = smallbuf;
1da177e4
LT		 398 iov.iov_base = smb_buffer;
399 iov.iov_len = 4;
400 smb_msg.msg_control = NULL;
401 smb_msg.msg_controllen = 0;
402 length =
403 kernel_recvmsg(csocket, &smb_msg,
404 &iov, 1, 4, 0 /* BB see socket.h flags */);
405
406 if(server->tcpStatus == CifsExiting) {
407 break;
408 } else if (server->tcpStatus == CifsNeedReconnect) {
57337e42 409 cFYI(1,("Reconnect after server stopped responding"));
1da177e4
LT		 410 cifs_reconnect(server);
411 cFYI(1,("call to reconnect done"));
412 csocket = server->ssocket;
413 continue;
414 } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) {
b8643e1b 415 msleep(1); /* minimum sleep to prevent looping
1da177e4
LT		 416 allowing socket to clear and app threads to set
417 tcpStatus CifsNeedReconnect if server hung */
418 continue;
419 } else if (length <= 0) {
420 if(server->tcpStatus == CifsNew) {
57337e42 421 cFYI(1,("tcp session abend after SMBnegprot"));
09d1db5c
SF		 422 /* some servers kill the TCP session rather than
423 returning an SMB negprot error, in which
424 case reconnecting here is not going to help,
425 and so simply return error to mount */
1da177e4
LT		 426 break;
427 }
428 if(length == -EINTR) {
429 cFYI(1,("cifsd thread killed"));
430 break;
431 }
57337e42
SF		 432 cFYI(1,("Reconnect after unexpected peek error %d",
433 length));
1da177e4
LT		 434 cifs_reconnect(server);
435 csocket = server->ssocket;
436 wake_up(&server->response_q);
437 continue;
46810cbf
SF		 438 } else if (length < 4) {
439 cFYI(1,
57337e42 440 ("Frame under four bytes received (%d bytes long)",
46810cbf
SF		 441 length));
442 cifs_reconnect(server);
443 csocket = server->ssocket;
444 wake_up(&server->response_q);
445 continue;
446 }
1da177e4 447
70ca734a
SF		 448 /* The right amount was read from socket - 4 bytes */
449 /* so we can now interpret the length field */
46810cbf 450
70ca734a
SF		 451 /* the first byte big endian of the length field,
452 is actually not part of the length but the type
453 with the most common, zero, as regular data */
454 temp = *((char *) smb_buffer);
46810cbf 455
70ca734a
SF		 456 /* Note that FC 1001 length is big endian on the wire,
457 but we convert it here so it is always manipulated
458 as host byte order */
46810cbf 459 pdu_length = ntohl(smb_buffer->smb_buf_length);
70ca734a
SF		 460 smb_buffer->smb_buf_length = pdu_length;
461
462 cFYI(1,("rfc1002 length 0x%x)", pdu_length+4));
46810cbf 463
70ca734a 464 if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) {
e4eb295d 465 continue;
70ca734a 466 } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) {
e4eb295d
SF		 467 cFYI(1,("Good RFC 1002 session rsp"));
468 continue;
70ca734a 469 } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) {
46810cbf
SF		 470 /* we get this from Windows 98 instead of
471 an error on SMB negprot response */
e4eb295d 472 cFYI(1,("Negative RFC1002 Session Response Error 0x%x)",
70ca734a 473 pdu_length));
46810cbf
SF		 474 if(server->tcpStatus == CifsNew) {
475 /* if nack on negprot (rather than
476 ret of smb negprot error) reconnecting
477 not going to help, ret error to mount */
478 break;
479 } else {
480 /* give server a second to
481 clean up before reconnect attempt */
482 msleep(1000);
483 /* always try 445 first on reconnect
484 since we get NACK on some if we ever
485 connected to port 139 (the NACK is
486 since we do not begin with RFC1001
487 session initialize frame) */
488 server->addr.sockAddr.sin_port =
489 htons(CIFS_PORT);
1da177e4
LT		 490 cifs_reconnect(server);
491 csocket = server->ssocket;
46810cbf 492 wake_up(&server->response_q);
1da177e4 493 continue;
46810cbf 494 }
70ca734a 495 } else if (temp != (char) 0) {
46810cbf 496 cERROR(1,("Unknown RFC 1002 frame"));
70ca734a
SF		 497 cifs_dump_mem(" Received Data: ", (char *)smb_buffer,
498 length);
46810cbf
SF		 499 cifs_reconnect(server);
500 csocket = server->ssocket;
501 continue;
e4eb295d
SF		 502 }
503
504 /* else we have an SMB response */
505 if((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) ||
46810cbf 506 (pdu_length < sizeof (struct smb_hdr) - 1 - 4)) {
e4eb295d 507 cERROR(1, ("Invalid size SMB length %d pdu_length %d",
46810cbf 508 length, pdu_length+4));
e4eb295d
SF		 509 cifs_reconnect(server);
510 csocket = server->ssocket;
511 wake_up(&server->response_q);
512 continue;
513 }
514
515 /* else length ok */
516 reconnect = 0;
517
ec637e3f 518 if(pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) {
e4eb295d
SF		 519 isLargeBuf = TRUE;
520 memcpy(bigbuf, smallbuf, 4);
521 smb_buffer = bigbuf;
522 }
523 length = 0;
524 iov.iov_base = 4 + (char *)smb_buffer;
525 iov.iov_len = pdu_length;
526 for (total_read = 0; total_read < pdu_length;
527 total_read += length) {
528 length = kernel_recvmsg(csocket, &smb_msg, &iov, 1,
529 pdu_length - total_read, 0);
530 if((server->tcpStatus == CifsExiting) ||
531 (length == -EINTR)) {
532 /* then will exit */
533 reconnect = 2;
534 break;
535 } else if (server->tcpStatus == CifsNeedReconnect) {
46810cbf
SF		 536 cifs_reconnect(server);
537 csocket = server->ssocket;
e4eb295d
SF		 538 /* Reconnect wakes up rspns q */
539 /* Now we will reread sock */
540 reconnect = 1;
541 break;
542 } else if ((length == -ERESTARTSYS) ||
543 (length == -EAGAIN)) {
544 msleep(1); /* minimum sleep to prevent looping,
545 allowing socket to clear and app
546 threads to set tcpStatus
547 CifsNeedReconnect if server hung*/
46810cbf 548 continue;
e4eb295d
SF		 549 } else if (length <= 0) {
550 cERROR(1,("Received no data, expecting %d",
551 pdu_length - total_read));
552 cifs_reconnect(server);
553 csocket = server->ssocket;
554 reconnect = 1;
555 break;
46810cbf 556 }
e4eb295d
SF		 557 }
558 if(reconnect == 2)
559 break;
560 else if(reconnect == 1)
561 continue;
1da177e4 562
e4eb295d
SF		 563 length += 4; /* account for rfc1002 hdr */
564
09d1db5c 565
e4eb295d 566 dump_smb(smb_buffer, length);
184ed211 567 if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) {
b387eaeb 568 cifs_dump_mem("Bad SMB: ", smb_buffer, 48);
e4eb295d
SF		 569 continue;
570 }
1da177e4 571
e4eb295d
SF		 572
573 task_to_wake = NULL;
574 spin_lock(&GlobalMid_Lock);
575 list_for_each(tmp, &server->pending_mid_q) {
576 mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
577
578 if ((mid_entry->mid == smb_buffer->Mid) &&
579 (mid_entry->midState == MID_REQUEST_SUBMITTED) &&
580 (mid_entry->command == smb_buffer->Command)) {
e4eb295d
SF		 581 if(check2ndT2(smb_buffer,server->maxBuf) > 0) {
582 /* We have a multipart transact2 resp */
cd63499c 583 isMultiRsp = TRUE;
e4eb295d
SF		 584 if(mid_entry->resp_buf) {
585 /* merge response - fix up 1st*/
586 if(coalesce_t2(smb_buffer,
587 mid_entry->resp_buf)) {
e4eb295d
SF		 588 break;
589 } else {
590 /* all parts received */
591 goto multi_t2_fnd;
592 }
593 } else {
594 if(!isLargeBuf) {
595 cERROR(1,("1st trans2 resp needs bigbuf"));
596 /* BB maybe we can fix this up, switch
597 to already allocated large buffer? */
598 } else {
cd63499c 599 /* Have first buffer */
e4eb295d
SF		 600 mid_entry->resp_buf =
601 smb_buffer;
602 mid_entry->largeBuf = 1;
e4eb295d
SF		 603 bigbuf = NULL;
604 }
605 }
606 break;
607 }
608 mid_entry->resp_buf = smb_buffer;
46810cbf 609 if(isLargeBuf)
e4eb295d 610 mid_entry->largeBuf = 1;
46810cbf 611 else
e4eb295d
SF		 612 mid_entry->largeBuf = 0;
613multi_t2_fnd:
614 task_to_wake = mid_entry->tsk;
615 mid_entry->midState = MID_RESPONSE_RECEIVED;
1047abc1
SF		 616#ifdef CONFIG_CIFS_STATS2
617 mid_entry->when_received = jiffies;
618#endif
e4eb295d 619 break;
46810cbf 620 }
1da177e4 621 }
e4eb295d
SF		 622 spin_unlock(&GlobalMid_Lock);
623 if (task_to_wake) {
cd63499c
SF		 624 /* Was previous buf put in mpx struct for multi-rsp? */
625 if(!isMultiRsp) {
626 /* smb buffer will be freed by user thread */
627 if(isLargeBuf) {
628 bigbuf = NULL;
629 } else
630 smallbuf = NULL;
631 }
e4eb295d 632 wake_up_process(task_to_wake);
d7c8c94d 633 } else if ((is_valid_oplock_break(smb_buffer, server) == FALSE)
e4eb295d
SF		 634 && (isMultiRsp == FALSE)) {
635 cERROR(1, ("No task to wake, unknown frame rcvd!"));
70ca734a
SF		 636 cifs_dump_mem("Received Data is: ",(char *)smb_buffer,
637 sizeof(struct smb_hdr));
e4eb295d
SF		 638 }
639 } /* end while !EXITING */
640
1da177e4
LT		 641 spin_lock(&GlobalMid_Lock);
642 server->tcpStatus = CifsExiting;
643 server->tsk = NULL;
31ca3bc3
SF		 644 /* check if we have blocked requests that need to free */
645 /* Note that cifs_max_pending is normally 50, but
646 can be set at module install time to as little as two */
647 if(atomic_read(&server->inFlight) >= cifs_max_pending)
648 atomic_set(&server->inFlight, cifs_max_pending - 1);
649 /* We do not want to set the max_pending too low or we
650 could end up with the counter going negative */
1da177e4
LT		 651 spin_unlock(&GlobalMid_Lock);
652 /* Although there should not be any requests blocked on
653 this queue it can not hurt to be paranoid and try to wake up requests
09d1db5c 654 that may haven been blocked when more than 50 at time were on the wire
1da177e4
LT		 655 to the same server - they now will see the session is in exit state
656 and get out of SendReceive. */
657 wake_up_all(&server->request_q);
658 /* give those requests time to exit */
b8643e1b
SF		 659 msleep(125);
660
1da177e4
LT		 661 if(server->ssocket) {
662 sock_release(csocket);
663 server->ssocket = NULL;
664 }
b8643e1b
SF		 665 /* buffer usuallly freed in free_mid - need to free it here on exit */
666 if (bigbuf != NULL)
667 cifs_buf_release(bigbuf);
668 if (smallbuf != NULL)
669 cifs_small_buf_release(smallbuf);
1da177e4
LT		 670
671 read_lock(&GlobalSMBSeslock);
672 if (list_empty(&server->pending_mid_q)) {
09d1db5c
SF		 673 /* loop through server session structures attached to this and
674 mark them dead */
1da177e4
LT		 675 list_for_each(tmp, &GlobalSMBSessionList) {
676 ses =
677 list_entry(tmp, struct cifsSesInfo,
678 cifsSessionList);
679 if (ses->server == server) {
680 ses->status = CifsExiting;
681 ses->server = NULL;
682 }
683 }
684 read_unlock(&GlobalSMBSeslock);
685 } else {
31ca3bc3
SF		 686 /* although we can not zero the server struct pointer yet,
687 since there are active requests which may depnd on them,
688 mark the corresponding SMB sessions as exiting too */
689 list_for_each(tmp, &GlobalSMBSessionList) {
690 ses = list_entry(tmp, struct cifsSesInfo,
691 cifsSessionList);
692 if (ses->server == server) {
693 ses->status = CifsExiting;
694 }
695 }
696
1da177e4
LT		 697 spin_lock(&GlobalMid_Lock);
698 list_for_each(tmp, &server->pending_mid_q) {
699 mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
700 if (mid_entry->midState == MID_REQUEST_SUBMITTED) {
701 cFYI(1,
09d1db5c 702 ("Clearing Mid 0x%x - waking up ",mid_entry->mid));
1da177e4
LT		 703 task_to_wake = mid_entry->tsk;
704 if(task_to_wake) {
705 wake_up_process(task_to_wake);
706 }
707 }
708 }
709 spin_unlock(&GlobalMid_Lock);
710 read_unlock(&GlobalSMBSeslock);
1da177e4 711 /* 1/8th of sec is more than enough time for them to exit */
b8643e1b 712 msleep(125);
1da177e4
LT		 713 }
714
f191401f 715 if (!list_empty(&server->pending_mid_q)) {
1da177e4
LT		 716 /* mpx threads have not exited yet give them
717 at least the smb send timeout time for long ops */
31ca3bc3
SF		 718 /* due to delays on oplock break requests, we need
719 to wait at least 45 seconds before giving up
720 on a request getting a response and going ahead
721 and killing cifsd */
1da177e4 722 cFYI(1, ("Wait for exit from demultiplex thread"));
31ca3bc3 723 msleep(46000);
1da177e4
LT		 724 /* if threads still have not exited they are probably never
725 coming home not much else we can do but free the memory */
726 }
1da177e4
LT		 727
728 write_lock(&GlobalSMBSeslock);
729 atomic_dec(&tcpSesAllocCount);
730 length = tcpSesAllocCount.counter;
31ca3bc3
SF		 731
732 /* last chance to mark ses pointers invalid
733 if there are any pointing to this (e.g
734 if a crazy root user tried to kill cifsd
735 kernel thread explicitly this might happen) */
736 list_for_each(tmp, &GlobalSMBSessionList) {
737 ses = list_entry(tmp, struct cifsSesInfo,
738 cifsSessionList);
739 if (ses->server == server) {
740 ses->server = NULL;
741 }
742 }
1da177e4 743 write_unlock(&GlobalSMBSeslock);
31ca3bc3
SF		 744
745 kfree(server);
1da177e4
LT		 746 if(length > 0) {
747 mempool_resize(cifs_req_poolp,
748 length + cifs_min_rcv,
749 GFP_KERNEL);
750 }
b8643e1b 751
f191401f 752 complete_and_exit(&cifsd_complete, 0);
1da177e4
LT		 753 return 0;
754}
755
1da177e4
LT		 756static int
757cifs_parse_mount_options(char *options, const char *devname,struct smb_vol *vol)
758{
759 char *value;
760 char *data;
761 unsigned int temp_len, i, j;
762 char separator[2];
763
764 separator[0] = ',';
765 separator[1] = 0;
766
767 memset(vol->source_rfc1001_name,0x20,15);
768 for(i=0;i < strnlen(system_utsname.nodename,15);i++) {
769 /* does not have to be a perfect mapping since the field is
770 informational, only used for servers that do not support
771 port 445 and it can be overridden at mount time */
09d1db5c
SF		 772 vol->source_rfc1001_name[i] =
773 toupper(system_utsname.nodename[i]);
1da177e4
LT		 774 }
775 vol->source_rfc1001_name[15] = 0;
a10faeb2
SF		 776 /* null target name indicates to use *SMBSERVR default called name
777 if we end up sending RFC1001 session initialize */
778 vol->target_rfc1001_name[0] = 0;
1da177e4
LT		 779 vol->linux_uid = current->uid; /* current->euid instead? */
780 vol->linux_gid = current->gid;
781 vol->dir_mode = S_IRWXUGO;
782 /* 2767 perms indicate mandatory locking support */
783 vol->file_mode = S_IALLUGO & ~(S_ISUID | S_IXGRP);
784
785 /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */
786 vol->rw = TRUE;
bf820679 787 vol->ntlm = TRUE;
ac67055e
JA		 788 /* default is always to request posix paths. */
789 vol->posix_paths = 1;
790
1da177e4
LT		 791 if (!options)
792 return 1;
793
794 if(strncmp(options,"sep=",4) == 0) {
795 if(options[4] != 0) {
796 separator[0] = options[4];
797 options += 5;
798 } else {
799 cFYI(1,("Null separator not allowed"));
800 }
801 }
802
803 while ((data = strsep(&options, separator)) != NULL) {
804 if (!*data)
805 continue;
806 if ((value = strchr(data, '=')) != NULL)
807 *value++ = '\0';
808
809 if (strnicmp(data, "user_xattr",10) == 0) {/*parse before user*/
810 vol->no_xattr = 0;
811 } else if (strnicmp(data, "nouser_xattr",12) == 0) {
812 vol->no_xattr = 1;
813 } else if (strnicmp(data, "user", 4) == 0) {
814 if (!value || !*value) {
815 printk(KERN_WARNING
816 "CIFS: invalid or missing username\n");
817 return 1; /* needs_arg; */
818 }
819 if (strnlen(value, 200) < 200) {
820 vol->username = value;
821 } else {
822 printk(KERN_WARNING "CIFS: username too long\n");
823 return 1;
824 }
825 } else if (strnicmp(data, "pass", 4) == 0) {
826 if (!value) {
827 vol->password = NULL;
828 continue;
829 } else if(value[0] == 0) {
830 /* check if string begins with double comma
831 since that would mean the password really
832 does start with a comma, and would not
833 indicate an empty string */
834 if(value[1] != separator[0]) {
835 vol->password = NULL;
836 continue;
837 }
838 }
839 temp_len = strlen(value);
840 /* removed password length check, NTLM passwords
841 can be arbitrarily long */
842
843 /* if comma in password, the string will be
844 prematurely null terminated. Commas in password are
845 specified across the cifs mount interface by a double
846 comma ie ,, and a comma used as in other cases ie ','
847 as a parameter delimiter/separator is single and due
848 to the strsep above is temporarily zeroed. */
849
850 /* NB: password legally can have multiple commas and
851 the only illegal character in a password is null */
852
09d1db5c
SF		 853 if ((value[temp_len] == 0) &&
854 (value[temp_len+1] == separator[0])) {
1da177e4
LT		 855 /* reinsert comma */
856 value[temp_len] = separator[0];
857 temp_len+=2; /* move after the second comma */
858 while(value[temp_len] != 0) {
859 if (value[temp_len] == separator[0]) {
09d1db5c
SF		 860 if (value[temp_len+1] ==
861 separator[0]) {
862 /* skip second comma */
863 temp_len++;
1da177e4
LT		 864 } else {
865 /* single comma indicating start
866 of next parm */
867 break;
868 }
869 }
870 temp_len++;
871 }
872 if(value[temp_len] == 0) {
873 options = NULL;
874 } else {
875 value[temp_len] = 0;
876 /* point option to start of next parm */
877 options = value + temp_len + 1;
878 }
879 /* go from value to value + temp_len condensing
880 double commas to singles. Note that this ends up
881 allocating a few bytes too many, which is ok */
e915fc49 882 vol->password = kzalloc(temp_len, GFP_KERNEL);
433dc24f
SF		 883 if(vol->password == NULL) {
884 printk("CIFS: no memory for pass\n");
885 return 1;
886 }
1da177e4
LT		 887 for(i=0,j=0;i<temp_len;i++,j++) {
888 vol->password[j] = value[i];
09d1db5c
SF		 889 if(value[i] == separator[0]
890 && value[i+1] == separator[0]) {
1da177e4
LT		 891 /* skip second comma */
892 i++;
893 }
894 }
895 vol->password[j] = 0;
896 } else {
e915fc49 897 vol->password = kzalloc(temp_len+1, GFP_KERNEL);
433dc24f
SF		 898 if(vol->password == NULL) {
899 printk("CIFS: no memory for pass\n");
900 return 1;
901 }
1da177e4
LT		 902 strcpy(vol->password, value);
903 }
904 } else if (strnicmp(data, "ip", 2) == 0) {
905 if (!value || !*value) {
906 vol->UNCip = NULL;
907 } else if (strnlen(value, 35) < 35) {
908 vol->UNCip = value;
909 } else {
910 printk(KERN_WARNING "CIFS: ip address too long\n");
911 return 1;
912 }
bf820679
SF		 913 } else if (strnicmp(data, "sec", 3) == 0) {
914 if (!value || !*value) {
915 cERROR(1,("no security value specified"));
916 continue;
917 } else if (strnicmp(value, "krb5i", 5) == 0) {
918 vol->sign = 1;
919 vol->krb5 = 1;
920 } else if (strnicmp(value, "krb5p", 5) == 0) {
921 /* vol->seal = 1;
922 vol->krb5 = 1; */
923 cERROR(1,("Krb5 cifs privacy not supported"));
924 return 1;
925 } else if (strnicmp(value, "krb5", 4) == 0) {
926 vol->krb5 = 1;
927 } else if (strnicmp(value, "ntlmv2i", 7) == 0) {
928 vol->ntlmv2 = 1;
929 vol->sign = 1;
930 } else if (strnicmp(value, "ntlmv2", 6) == 0) {
931 vol->ntlmv2 = 1;
932 } else if (strnicmp(value, "ntlmi", 5) == 0) {
933 vol->ntlm = 1;
934 vol->sign = 1;
935 } else if (strnicmp(value, "ntlm", 4) == 0) {
936 /* ntlm is default so can be turned off too */
937 vol->ntlm = 1;
938 } else if (strnicmp(value, "nontlm", 6) == 0) {
939 vol->ntlm = 0;
940 } else if (strnicmp(value, "none", 4) == 0) {
941 vol->nullauth = 1;
942 } else {
943 cERROR(1,("bad security option: %s", value));
944 return 1;
945 }
1da177e4
LT		 946 } else if ((strnicmp(data, "unc", 3) == 0)
947 || (strnicmp(data, "target", 6) == 0)
948 || (strnicmp(data, "path", 4) == 0)) {
949 if (!value || !*value) {
950 printk(KERN_WARNING
951 "CIFS: invalid path to network resource\n");
952 return 1; /* needs_arg; */
953 }
954 if ((temp_len = strnlen(value, 300)) < 300) {
955 vol->UNC = kmalloc(temp_len+1,GFP_KERNEL);
956 if(vol->UNC == NULL)
957 return 1;
958 strcpy(vol->UNC,value);
959 if (strncmp(vol->UNC, "//", 2) == 0) {
960 vol->UNC[0] = '\\';
961 vol->UNC[1] = '\\';
962 } else if (strncmp(vol->UNC, "\\\\", 2) != 0) {
963 printk(KERN_WARNING
964 "CIFS: UNC Path does not begin with // or \\\\ \n");
965 return 1;
966 }
967 } else {
968 printk(KERN_WARNING "CIFS: UNC name too long\n");
969 return 1;
970 }
971 } else if ((strnicmp(data, "domain", 3) == 0)
972 || (strnicmp(data, "workgroup", 5) == 0)) {
973 if (!value || !*value) {
974 printk(KERN_WARNING "CIFS: invalid domain name\n");
975 return 1; /* needs_arg; */
976 }
977 /* BB are there cases in which a comma can be valid in
978 a domain name and need special handling? */
979 if (strnlen(value, 65) < 65) {
980 vol->domainname = value;
981 cFYI(1, ("Domain name set"));
982 } else {
983 printk(KERN_WARNING "CIFS: domain name too long\n");
984 return 1;
985 }
986 } else if (strnicmp(data, "iocharset", 9) == 0) {
987 if (!value || !*value) {
988 printk(KERN_WARNING "CIFS: invalid iocharset specified\n");
989 return 1; /* needs_arg; */
990 }
991 if (strnlen(value, 65) < 65) {
992 if(strnicmp(value,"default",7))
993 vol->iocharset = value;
994 /* if iocharset not set load_nls_default used by caller */
995 cFYI(1, ("iocharset set to %s",value));
996 } else {
997 printk(KERN_WARNING "CIFS: iocharset name too long.\n");
998 return 1;
999 }
1000 } else if (strnicmp(data, "uid", 3) == 0) {
1001 if (value && *value) {
1002 vol->linux_uid =
1003 simple_strtoul(value, &value, 0);
1004 }
1005 } else if (strnicmp(data, "gid", 3) == 0) {
1006 if (value && *value) {
1007 vol->linux_gid =
1008 simple_strtoul(value, &value, 0);
1009 }
1010 } else if (strnicmp(data, "file_mode", 4) == 0) {
1011 if (value && *value) {
1012 vol->file_mode =
1013 simple_strtoul(value, &value, 0);
1014 }
1015 } else if (strnicmp(data, "dir_mode", 4) == 0) {
1016 if (value && *value) {
1017 vol->dir_mode =
1018 simple_strtoul(value, &value, 0);
1019 }
1020 } else if (strnicmp(data, "dirmode", 4) == 0) {
1021 if (value && *value) {
1022 vol->dir_mode =
1023 simple_strtoul(value, &value, 0);
1024 }
1025 } else if (strnicmp(data, "port", 4) == 0) {
1026 if (value && *value) {
1027 vol->port =
1028 simple_strtoul(value, &value, 0);
1029 }
1030 } else if (strnicmp(data, "rsize", 5) == 0) {
1031 if (value && *value) {
1032 vol->rsize =
1033 simple_strtoul(value, &value, 0);
1034 }
1035 } else if (strnicmp(data, "wsize", 5) == 0) {
1036 if (value && *value) {
1037 vol->wsize =
1038 simple_strtoul(value, &value, 0);
1039 }
1040 } else if (strnicmp(data, "sockopt", 5) == 0) {
1041 if (value && *value) {
1042 vol->sockopt =
1043 simple_strtoul(value, &value, 0);
1044 }
1045 } else if (strnicmp(data, "netbiosname", 4) == 0) {
1046 if (!value || !*value || (*value == ' ')) {
1047 cFYI(1,("invalid (empty) netbiosname specified"));
1048 } else {
1049 memset(vol->source_rfc1001_name,0x20,15);
1050 for(i=0;i<15;i++) {
1051 /* BB are there cases in which a comma can be
1052 valid in this workstation netbios name (and need
1053 special handling)? */
1054
1055 /* We do not uppercase netbiosname for user */
1056 if (value[i]==0)
1057 break;
1058 else
1059 vol->source_rfc1001_name[i] = value[i];
1060 }
1061 /* The string has 16th byte zero still from
1062 set at top of the function */
1063 if((i==15) && (value[i] != 0))
a10faeb2
SF		 1064 printk(KERN_WARNING "CIFS: netbiosname longer than 15 truncated.\n");
1065 }
1066 } else if (strnicmp(data, "servern", 7) == 0) {
1067 /* servernetbiosname specified override *SMBSERVER */
1068 if (!value || !*value || (*value == ' ')) {
1069 cFYI(1,("empty server netbiosname specified"));
1070 } else {
1071 /* last byte, type, is 0x20 for servr type */
1072 memset(vol->target_rfc1001_name,0x20,16);
1073
1074 for(i=0;i<15;i++) {
1075 /* BB are there cases in which a comma can be
1076 valid in this workstation netbios name (and need
1077 special handling)? */
1078
1079 /* user or mount helper must uppercase netbiosname */
1080 if (value[i]==0)
1081 break;
1082 else
1083 vol->target_rfc1001_name[i] = value[i];
1084 }
1085 /* The string has 16th byte zero still from
1086 set at top of the function */
1087 if((i==15) && (value[i] != 0))
1088 printk(KERN_WARNING "CIFS: server netbiosname longer than 15 truncated.\n");
1da177e4
LT		 1089 }
1090 } else if (strnicmp(data, "credentials", 4) == 0) {
1091 /* ignore */
1092 } else if (strnicmp(data, "version", 3) == 0) {
1093 /* ignore */
1094 } else if (strnicmp(data, "guest",5) == 0) {
1095 /* ignore */
1096 } else if (strnicmp(data, "rw", 2) == 0) {
1097 vol->rw = TRUE;
1098 } else if ((strnicmp(data, "suid", 4) == 0) ||
1099 (strnicmp(data, "nosuid", 6) == 0) ||
1100 (strnicmp(data, "exec", 4) == 0) ||
1101 (strnicmp(data, "noexec", 6) == 0) ||
1102 (strnicmp(data, "nodev", 5) == 0) ||
1103 (strnicmp(data, "noauto", 6) == 0) ||
1104 (strnicmp(data, "dev", 3) == 0)) {
1105 /* The mount tool or mount.cifs helper (if present)
1106 uses these opts to set flags, and the flags are read
1107 by the kernel vfs layer before we get here (ie
1108 before read super) so there is no point trying to
1109 parse these options again and set anything and it
1110 is ok to just ignore them */
1111 continue;
1112 } else if (strnicmp(data, "ro", 2) == 0) {
1113 vol->rw = FALSE;
1114 } else if (strnicmp(data, "hard", 4) == 0) {
1115 vol->retry = 1;
1116 } else if (strnicmp(data, "soft", 4) == 0) {
1117 vol->retry = 0;
1118 } else if (strnicmp(data, "perm", 4) == 0) {
1119 vol->noperm = 0;
1120 } else if (strnicmp(data, "noperm", 6) == 0) {
1121 vol->noperm = 1;
6a0b4824
SF		 1122 } else if (strnicmp(data, "mapchars", 8) == 0) {
1123 vol->remap = 1;
1124 } else if (strnicmp(data, "nomapchars", 10) == 0) {
1125 vol->remap = 0;
d7245c2c
SF		 1126 } else if (strnicmp(data, "sfu", 3) == 0) {
1127 vol->sfu_emul = 1;
1128 } else if (strnicmp(data, "nosfu", 5) == 0) {
1129 vol->sfu_emul = 0;
ac67055e
JA		 1130 } else if (strnicmp(data, "posixpaths", 10) == 0) {
1131 vol->posix_paths = 1;
1132 } else if (strnicmp(data, "noposixpaths", 12) == 0) {
1133 vol->posix_paths = 0;
a10faeb2
SF		 1134 } else if ((strnicmp(data, "nocase", 6) == 0) ||
1135 (strnicmp(data, "ignorecase", 10) == 0)) {
c46fa8ac
SF		 1136 vol->nocase = 1;
1137 } else if (strnicmp(data, "brl", 3) == 0) {
1138 vol->nobrl = 0;
cb8be640 1139 } else if ((strnicmp(data, "nobrl", 5) == 0) ||
1c955187 1140 (strnicmp(data, "nolock", 6) == 0)) {
c46fa8ac 1141 vol->nobrl = 1;
d3485d37
SF		 1142 /* turn off mandatory locking in mode
1143 if remote locking is turned off since the
1144 local vfs will do advisory */
1145 if(vol->file_mode == (S_IALLUGO & ~(S_ISUID | S_IXGRP)))
1146 vol->file_mode = S_IALLUGO;
1da177e4
LT		 1147 } else if (strnicmp(data, "setuids", 7) == 0) {
1148 vol->setuids = 1;
1149 } else if (strnicmp(data, "nosetuids", 9) == 0) {
1150 vol->setuids = 0;
1151 } else if (strnicmp(data, "nohard", 6) == 0) {
1152 vol->retry = 0;
1153 } else if (strnicmp(data, "nosoft", 6) == 0) {
1154 vol->retry = 1;
1155 } else if (strnicmp(data, "nointr", 6) == 0) {
1156 vol->intr = 0;
1157 } else if (strnicmp(data, "intr", 4) == 0) {
1158 vol->intr = 1;
1159 } else if (strnicmp(data, "serverino",7) == 0) {
1160 vol->server_ino = 1;
1161 } else if (strnicmp(data, "noserverino",9) == 0) {
1162 vol->server_ino = 0;
0a4b92c0
SF		 1163 } else if (strnicmp(data, "cifsacl",7) == 0) {
1164 vol->cifs_acl = 1;
1165 } else if (strnicmp(data, "nocifsacl", 9) == 0) {
1166 vol->cifs_acl = 0;
1da177e4
LT		 1167 } else if (strnicmp(data, "acl",3) == 0) {
1168 vol->no_psx_acl = 0;
1169 } else if (strnicmp(data, "noacl",5) == 0) {
1170 vol->no_psx_acl = 1;
1171 } else if (strnicmp(data, "direct",6) == 0) {
1172 vol->direct_io = 1;
1173 } else if (strnicmp(data, "forcedirectio",13) == 0) {
1174 vol->direct_io = 1;
1175 } else if (strnicmp(data, "in6_addr",8) == 0) {
1176 if (!value || !*value) {
1177 vol->in6_addr = NULL;
1178 } else if (strnlen(value, 49) == 48) {
1179 vol->in6_addr = value;
1180 } else {
1181 printk(KERN_WARNING "CIFS: ip v6 address not 48 characters long\n");
1182 return 1;
1183 }
1184 } else if (strnicmp(data, "noac", 4) == 0) {
1185 printk(KERN_WARNING "CIFS: Mount option noac not supported. Instead set /proc/fs/cifs/LookupCacheEnabled to 0\n");
1186 } else
1187 printk(KERN_WARNING "CIFS: Unknown mount option %s\n",data);
1188 }
1189 if (vol->UNC == NULL) {
1190 if(devname == NULL) {
1191 printk(KERN_WARNING "CIFS: Missing UNC name for mount target\n");
1192 return 1;
1193 }
1194 if ((temp_len = strnlen(devname, 300)) < 300) {
1195 vol->UNC = kmalloc(temp_len+1,GFP_KERNEL);
1196 if(vol->UNC == NULL)
1197 return 1;
1198 strcpy(vol->UNC,devname);
1199 if (strncmp(vol->UNC, "//", 2) == 0) {
1200 vol->UNC[0] = '\\';
1201 vol->UNC[1] = '\\';
1202 } else if (strncmp(vol->UNC, "\\\\", 2) != 0) {
1203 printk(KERN_WARNING "CIFS: UNC Path does not begin with // or \\\\ \n");
1204 return 1;
1205 }
1206 } else {
1207 printk(KERN_WARNING "CIFS: UNC name too long\n");
1208 return 1;
1209 }
1210 }
1211 if(vol->UNCip == NULL)
1212 vol->UNCip = &vol->UNC[2];
1213
1214 return 0;
1215}
1216
1217static struct cifsSesInfo *
1218cifs_find_tcp_session(struct in_addr * target_ip_addr,
1219 struct in6_addr *target_ip6_addr,
1220 char *userName, struct TCP_Server_Info **psrvTcp)
1221{
1222 struct list_head *tmp;
1223 struct cifsSesInfo *ses;
1224 *psrvTcp = NULL;
1225 read_lock(&GlobalSMBSeslock);
1226
1227 list_for_each(tmp, &GlobalSMBSessionList) {
1228 ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
1229 if (ses->server) {
1230 if((target_ip_addr &&
1231 (ses->server->addr.sockAddr.sin_addr.s_addr
1232 == target_ip_addr->s_addr)) || (target_ip6_addr
1233 && memcmp(&ses->server->addr.sockAddr6.sin6_addr,
1234 target_ip6_addr,sizeof(*target_ip6_addr)))){
1235 /* BB lock server and tcp session and increment use count here?? */
1236 *psrvTcp = ses->server; /* found a match on the TCP session */
1237 /* BB check if reconnection needed */
1238 if (strncmp
1239 (ses->userName, userName,
1240 MAX_USERNAME_SIZE) == 0){
1241 read_unlock(&GlobalSMBSeslock);
1242 return ses; /* found exact match on both tcp and SMB sessions */
1243 }
1244 }
1245 }
1246 /* else tcp and smb sessions need reconnection */
1247 }
1248 read_unlock(&GlobalSMBSeslock);
1249 return NULL;
1250}
1251
1252static struct cifsTconInfo *
1253find_unc(__be32 new_target_ip_addr, char *uncName, char *userName)
1254{
1255 struct list_head *tmp;
1256 struct cifsTconInfo *tcon;
1257
1258 read_lock(&GlobalSMBSeslock);
1259 list_for_each(tmp, &GlobalTreeConnectionList) {
1260 cFYI(1, ("Next tcon - "));
1261 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
1262 if (tcon->ses) {
1263 if (tcon->ses->server) {
1264 cFYI(1,
1265 (" old ip addr: %x == new ip %x ?",
1266 tcon->ses->server->addr.sockAddr.sin_addr.
1267 s_addr, new_target_ip_addr));
1268 if (tcon->ses->server->addr.sockAddr.sin_addr.
1269 s_addr == new_target_ip_addr) {
1270 /* BB lock tcon and server and tcp session and increment use count here? */
1271 /* found a match on the TCP session */
1272 /* BB check if reconnection needed */
1273 cFYI(1,("Matched ip, old UNC: %s == new: %s ?",
1274 tcon->treeName, uncName));
1275 if (strncmp
1276 (tcon->treeName, uncName,
1277 MAX_TREE_SIZE) == 0) {
1278 cFYI(1,
1279 ("Matched UNC, old user: %s == new: %s ?",
1280 tcon->treeName, uncName));
1281 if (strncmp
1282 (tcon->ses->userName,
1283 userName,
1284 MAX_USERNAME_SIZE) == 0) {
1285 read_unlock(&GlobalSMBSeslock);
1286 return tcon;/* also matched user (smb session)*/
1287 }
1288 }
1289 }
1290 }
1291 }
1292 }
1293 read_unlock(&GlobalSMBSeslock);
1294 return NULL;
1295}
1296
1297int
1298connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo,
737b758c
SF		 1299 const char *old_path, const struct nls_table *nls_codepage,
1300 int remap)
1da177e4
LT		 1301{
1302 unsigned char *referrals = NULL;
1303 unsigned int num_referrals;
1304 int rc = 0;
1305
1306 rc = get_dfs_path(xid, pSesInfo,old_path, nls_codepage,
737b758c 1307 &num_referrals, &referrals, remap);
1da177e4
LT		 1308
1309 /* BB Add in code to: if valid refrl, if not ip address contact
1310 the helper that resolves tcp names, mount to it, try to
1311 tcon to it unmount it if fail */
1312
f99d49ad 1313 kfree(referrals);
1da177e4
LT		 1314
1315 return rc;
1316}
1317
1318int
1319get_dfs_path(int xid, struct cifsSesInfo *pSesInfo,
1320 const char *old_path, const struct nls_table *nls_codepage,
737b758c
SF		 1321 unsigned int *pnum_referrals,
1322 unsigned char ** preferrals, int remap)
1da177e4
LT		 1323{
1324 char *temp_unc;
1325 int rc = 0;
1326
1327 *pnum_referrals = 0;
1328
1329 if (pSesInfo->ipc_tid == 0) {
1330 temp_unc = kmalloc(2 /* for slashes */ +
1331 strnlen(pSesInfo->serverName,SERVER_NAME_LEN_WITH_NULL * 2)
1332 + 1 + 4 /* slash IPC$ */ + 2,
1333 GFP_KERNEL);
1334 if (temp_unc == NULL)
1335 return -ENOMEM;
1336 temp_unc[0] = '\\';
1337 temp_unc[1] = '\\';
1338 strcpy(temp_unc + 2, pSesInfo->serverName);
1339 strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$");
1340 rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage);
1341 cFYI(1,
1342 ("CIFS Tcon rc = %d ipc_tid = %d", rc,pSesInfo->ipc_tid));
1343 kfree(temp_unc);
1344 }
1345 if (rc == 0)
1346 rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals,
737b758c 1347 pnum_referrals, nls_codepage, remap);
1da177e4
LT		 1348
1349 return rc;
1350}
1351
1352/* See RFC1001 section 14 on representation of Netbios names */
1353static void rfc1002mangle(char * target,char * source, unsigned int length)
1354{
1355 unsigned int i,j;
1356
1357 for(i=0,j=0;i<(length);i++) {
1358 /* mask a nibble at a time and encode */
1359 target[j] = 'A' + (0x0F & (source[i] >> 4));
1360 target[j+1] = 'A' + (0x0F & source[i]);
1361 j+=2;
1362 }
1363
1364}
1365
1366
1367static int
1368ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
a10faeb2 1369 char * netbios_name, char * target_name)
1da177e4
LT		 1370{
1371 int rc = 0;
1372 int connected = 0;
1373 __be16 orig_port = 0;
1374
1375 if(*csocket == NULL) {
1376 rc = sock_create_kern(PF_INET, SOCK_STREAM, IPPROTO_TCP, csocket);
1377 if (rc < 0) {
1378 cERROR(1, ("Error %d creating socket",rc));
1379 *csocket = NULL;
1380 return rc;
1381 } else {
1382 /* BB other socket options to set KEEPALIVE, NODELAY? */
1383 cFYI(1,("Socket created"));
1384 (*csocket)->sk->sk_allocation = GFP_NOFS;
1385 }
1386 }
1387
1388 psin_server->sin_family = AF_INET;
1389 if(psin_server->sin_port) { /* user overrode default port */
1390 rc = (*csocket)->ops->connect(*csocket,
1391 (struct sockaddr *) psin_server,
1392 sizeof (struct sockaddr_in),0);
1393 if (rc >= 0)
1394 connected = 1;
1395 }
1396
1397 if(!connected) {
1398 /* save original port so we can retry user specified port
1399 later if fall back ports fail this time */
1400 orig_port = psin_server->sin_port;
1401
1402 /* do not retry on the same port we just failed on */
1403 if(psin_server->sin_port != htons(CIFS_PORT)) {
1404 psin_server->sin_port = htons(CIFS_PORT);
1405
1406 rc = (*csocket)->ops->connect(*csocket,
1407 (struct sockaddr *) psin_server,
1408 sizeof (struct sockaddr_in),0);
1409 if (rc >= 0)
1410 connected = 1;
1411 }
1412 }
1413 if (!connected) {
1414 psin_server->sin_port = htons(RFC1001_PORT);
1415 rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *)
1416 psin_server, sizeof (struct sockaddr_in),0);
1417 if (rc >= 0)
1418 connected = 1;
1419 }
1420
1421 /* give up here - unless we want to retry on different
1422 protocol families some day */
1423 if (!connected) {
1424 if(orig_port)
1425 psin_server->sin_port = orig_port;
1426 cFYI(1,("Error %d connecting to server via ipv4",rc));
1427 sock_release(*csocket);
1428 *csocket = NULL;
1429 return rc;
1430 }
1431 /* Eventually check for other socket options to change from
1432 the default. sock_setsockopt not used because it expects
1433 user space buffer */
b387eaeb
SF		 1434 cFYI(1,("sndbuf %d rcvbuf %d rcvtimeo 0x%lx",(*csocket)->sk->sk_sndbuf,
1435 (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo));
1da177e4 1436 (*csocket)->sk->sk_rcvtimeo = 7 * HZ;
b387eaeb
SF		 1437 /* make the bufsizes depend on wsize/rsize and max requests */
1438 if((*csocket)->sk->sk_sndbuf < (200 * 1024))
1439 (*csocket)->sk->sk_sndbuf = 200 * 1024;
1440 if((*csocket)->sk->sk_rcvbuf < (140 * 1024))
1441 (*csocket)->sk->sk_rcvbuf = 140 * 1024;
1da177e4
LT		 1442
1443 /* send RFC1001 sessinit */
1da177e4
LT		 1444 if(psin_server->sin_port == htons(RFC1001_PORT)) {
1445 /* some servers require RFC1001 sessinit before sending
1446 negprot - BB check reconnection in case where second
1447 sessinit is sent but no second negprot */
1448 struct rfc1002_session_packet * ses_init_buf;
1449 struct smb_hdr * smb_buf;
e915fc49 1450 ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), GFP_KERNEL);
1da177e4
LT		 1451 if(ses_init_buf) {
1452 ses_init_buf->trailer.session_req.called_len = 32;
a10faeb2
SF		 1453 if(target_name && (target_name[0] != 0)) {
1454 rfc1002mangle(ses_init_buf->trailer.session_req.called_name,
1455 target_name, 16);
1456 } else {
1457 rfc1002mangle(ses_init_buf->trailer.session_req.called_name,
1458 DEFAULT_CIFS_CALLED_NAME,16);
1459 }
1460
1da177e4
LT		 1461 ses_init_buf->trailer.session_req.calling_len = 32;
1462 /* calling name ends in null (byte 16) from old smb
1463 convention. */
1464 if(netbios_name && (netbios_name[0] !=0)) {
1465 rfc1002mangle(ses_init_buf->trailer.session_req.calling_name,
1466 netbios_name,16);
1467 } else {
1468 rfc1002mangle(ses_init_buf->trailer.session_req.calling_name,
1469 "LINUX_CIFS_CLNT",16);
1470 }
1471 ses_init_buf->trailer.session_req.scope1 = 0;
1472 ses_init_buf->trailer.session_req.scope2 = 0;
1473 smb_buf = (struct smb_hdr *)ses_init_buf;
1474 /* sizeof RFC1002_SESSION_REQUEST with no scope */
1475 smb_buf->smb_buf_length = 0x81000044;
1476 rc = smb_send(*csocket, smb_buf, 0x44,
1477 (struct sockaddr *)psin_server);
1478 kfree(ses_init_buf);
083d3a2c
SF		 1479 msleep(1); /* RFC1001 layer in at least one server
1480 requires very short break before negprot
1481 presumably because not expecting negprot
1482 to follow so fast. This is a simple
1483 solution that works without
1484 complicating the code and causes no
1485 significant slowing down on mount
1486 for everyone else */
1da177e4
LT		 1487 }
1488 /* else the negprot may still work without this
1489 even though malloc failed */
1490
1491 }
1492
1493 return rc;
1494}
1495
1496static int
1497ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket)
1498{
1499 int rc = 0;
1500 int connected = 0;
1501 __be16 orig_port = 0;
1502
1503 if(*csocket == NULL) {
1504 rc = sock_create_kern(PF_INET6, SOCK_STREAM, IPPROTO_TCP, csocket);
1505 if (rc < 0) {
1506 cERROR(1, ("Error %d creating ipv6 socket",rc));
1507 *csocket = NULL;
1508 return rc;
1509 } else {
1510 /* BB other socket options to set KEEPALIVE, NODELAY? */
1511 cFYI(1,("ipv6 Socket created"));
1512 (*csocket)->sk->sk_allocation = GFP_NOFS;
1513 }
1514 }
1515
1516 psin_server->sin6_family = AF_INET6;
1517
1518 if(psin_server->sin6_port) { /* user overrode default port */
1519 rc = (*csocket)->ops->connect(*csocket,
1520 (struct sockaddr *) psin_server,
1521 sizeof (struct sockaddr_in6),0);
1522 if (rc >= 0)
1523 connected = 1;
1524 }
1525
1526 if(!connected) {
1527 /* save original port so we can retry user specified port
1528 later if fall back ports fail this time */
1529
1530 orig_port = psin_server->sin6_port;
1531 /* do not retry on the same port we just failed on */
1532 if(psin_server->sin6_port != htons(CIFS_PORT)) {
1533 psin_server->sin6_port = htons(CIFS_PORT);
1534
1535 rc = (*csocket)->ops->connect(*csocket,
1536 (struct sockaddr *) psin_server,
1537 sizeof (struct sockaddr_in6),0);
1538 if (rc >= 0)
1539 connected = 1;
1540 }
1541 }
1542 if (!connected) {
1543 psin_server->sin6_port = htons(RFC1001_PORT);
1544 rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *)
1545 psin_server, sizeof (struct sockaddr_in6),0);
1546 if (rc >= 0)
1547 connected = 1;
1548 }
1549
1550 /* give up here - unless we want to retry on different
1551 protocol families some day */
1552 if (!connected) {
1553 if(orig_port)
1554 psin_server->sin6_port = orig_port;
1555 cFYI(1,("Error %d connecting to server via ipv6",rc));
1556 sock_release(*csocket);
1557 *csocket = NULL;
1558 return rc;
1559 }
1560 /* Eventually check for other socket options to change from
1561 the default. sock_setsockopt not used because it expects
1562 user space buffer */
1563 (*csocket)->sk->sk_rcvtimeo = 7 * HZ;
1564
1565 return rc;
1566}
1567
1568int
1569cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
1570 char *mount_data, const char *devname)
1571{
1572 int rc = 0;
1573 int xid;
1574 int address_type = AF_INET;
1575 struct socket *csocket = NULL;
1576 struct sockaddr_in sin_server;
1577 struct sockaddr_in6 sin_server6;
1578 struct smb_vol volume_info;
1579 struct cifsSesInfo *pSesInfo = NULL;
1580 struct cifsSesInfo *existingCifsSes = NULL;
1581 struct cifsTconInfo *tcon = NULL;
1582 struct TCP_Server_Info *srvTcp = NULL;
1583
1584 xid = GetXid();
1585
1586/* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */
1587
1588 memset(&volume_info,0,sizeof(struct smb_vol));
1589 if (cifs_parse_mount_options(mount_data, devname, &volume_info)) {
f99d49ad
JJ		 1590 kfree(volume_info.UNC);
1591 kfree(volume_info.password);
1da177e4
LT		 1592 FreeXid(xid);
1593 return -EINVAL;
1594 }
1595
1596 if (volume_info.username) {
1597 /* BB fixme parse for domain name here */
1598 cFYI(1, ("Username: %s ", volume_info.username));
1599
1600 } else {
bf820679 1601 cifserror("No username specified");
1da177e4
LT		 1602 /* In userspace mount helper we can get user name from alternate
1603 locations such as env variables and files on disk */
f99d49ad
JJ		 1604 kfree(volume_info.UNC);
1605 kfree(volume_info.password);
1da177e4
LT		 1606 FreeXid(xid);
1607 return -EINVAL;
1608 }
1609
1610 if (volume_info.UNCip && volume_info.UNC) {
1611 rc = cifs_inet_pton(AF_INET, volume_info.UNCip,&sin_server.sin_addr.s_addr);
1612
1613 if(rc <= 0) {
1614 /* not ipv4 address, try ipv6 */
1615 rc = cifs_inet_pton(AF_INET6,volume_info.UNCip,&sin_server6.sin6_addr.in6_u);
1616 if(rc > 0)
1617 address_type = AF_INET6;
1618 } else {
1619 address_type = AF_INET;
1620 }
1621
1622 if(rc <= 0) {
1623 /* we failed translating address */
f99d49ad
JJ		 1624 kfree(volume_info.UNC);
1625 kfree(volume_info.password);
1da177e4
LT		 1626 FreeXid(xid);
1627 return -EINVAL;
1628 }
1629
1630 cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip));
1631 /* success */
1632 rc = 0;
1633 } else if (volume_info.UNCip){
1634 /* BB using ip addr as server name connect to the DFS root below */
1635 cERROR(1,("Connecting to DFS root not implemented yet"));
f99d49ad
JJ		 1636 kfree(volume_info.UNC);
1637 kfree(volume_info.password);
1da177e4
LT		 1638 FreeXid(xid);
1639 return -EINVAL;
1640 } else /* which servers DFS root would we conect to */ {
1641 cERROR(1,
bf820679 1642 ("CIFS mount error: No UNC path (e.g. -o unc=//192.168.1.100/public) specified"));
f99d49ad
JJ		 1643 kfree(volume_info.UNC);
1644 kfree(volume_info.password);
1da177e4
LT		 1645 FreeXid(xid);
1646 return -EINVAL;
1647 }
1648
1649 /* this is needed for ASCII cp to Unicode converts */
1650 if(volume_info.iocharset == NULL) {
1651 cifs_sb->local_nls = load_nls_default();
1652 /* load_nls_default can not return null */
1653 } else {
1654 cifs_sb->local_nls = load_nls(volume_info.iocharset);
1655 if(cifs_sb->local_nls == NULL) {
1656 cERROR(1,("CIFS mount error: iocharset %s not found",volume_info.iocharset));
f99d49ad
JJ		 1657 kfree(volume_info.UNC);
1658 kfree(volume_info.password);
1da177e4
LT		 1659 FreeXid(xid);
1660 return -ELIBACC;
1661 }
1662 }
1663
1664 if(address_type == AF_INET)
1665 existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr,
1666 NULL /* no ipv6 addr */,
1667 volume_info.username, &srvTcp);
1668 else if(address_type == AF_INET6)
1669 existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */,
1670 &sin_server6.sin6_addr,
1671 volume_info.username, &srvTcp);
1672 else {
f99d49ad
JJ		 1673 kfree(volume_info.UNC);
1674 kfree(volume_info.password);
1da177e4
LT		 1675 FreeXid(xid);
1676 return -EINVAL;
1677 }
1678
1679
1680 if (srvTcp) {
bf820679 1681 cFYI(1, ("Existing tcp session with server found"));
1da177e4
LT		 1682 } else { /* create socket */
1683 if(volume_info.port)
1684 sin_server.sin_port = htons(volume_info.port);
1685 else
1686 sin_server.sin_port = 0;
a10faeb2
SF		 1687 rc = ipv4_connect(&sin_server,&csocket,
1688 volume_info.source_rfc1001_name,
1689 volume_info.target_rfc1001_name);
1da177e4
LT		 1690 if (rc < 0) {
1691 cERROR(1,
1692 ("Error connecting to IPv4 socket. Aborting operation"));
1693 if(csocket != NULL)
1694 sock_release(csocket);
f99d49ad
JJ		 1695 kfree(volume_info.UNC);
1696 kfree(volume_info.password);
1da177e4
LT		 1697 FreeXid(xid);
1698 return rc;
1699 }
1700
1701 srvTcp = kmalloc(sizeof (struct TCP_Server_Info), GFP_KERNEL);
1702 if (srvTcp == NULL) {
1703 rc = -ENOMEM;
1704 sock_release(csocket);
f99d49ad
JJ		 1705 kfree(volume_info.UNC);
1706 kfree(volume_info.password);
1da177e4
LT		 1707 FreeXid(xid);
1708 return rc;
1709 } else {
1710 memset(srvTcp, 0, sizeof (struct TCP_Server_Info));
1711 memcpy(&srvTcp->addr.sockAddr, &sin_server, sizeof (struct sockaddr_in));
1712 atomic_set(&srvTcp->inFlight,0);
1713 /* BB Add code for ipv6 case too */
1714 srvTcp->ssocket = csocket;
1715 srvTcp->protocolType = IPV4;
1716 init_waitqueue_head(&srvTcp->response_q);
1717 init_waitqueue_head(&srvTcp->request_q);
1718 INIT_LIST_HEAD(&srvTcp->pending_mid_q);
1719 /* at this point we are the only ones with the pointer
1720 to the struct since the kernel thread not created yet
1721 so no need to spinlock this init of tcpStatus */
1722 srvTcp->tcpStatus = CifsNew;
1723 init_MUTEX(&srvTcp->tcpSem);
1724 rc = (int)kernel_thread((void *)(void *)cifs_demultiplex_thread, srvTcp,
1725 CLONE_FS | CLONE_FILES | CLONE_VM);
1726 if(rc < 0) {
1727 rc = -ENOMEM;
1728 sock_release(csocket);
f99d49ad
JJ		 1729 kfree(volume_info.UNC);
1730 kfree(volume_info.password);
1da177e4
LT		 1731 FreeXid(xid);
1732 return rc;
f191401f
SF		 1733 }
1734 wait_for_completion(&cifsd_complete);
1735 rc = 0;
1da177e4 1736 memcpy(srvTcp->workstation_RFC1001_name, volume_info.source_rfc1001_name,16);
a10faeb2 1737 memcpy(srvTcp->server_RFC1001_name, volume_info.target_rfc1001_name,16);
ad009ac9 1738 srvTcp->sequence_number = 0;
1da177e4
LT		 1739 }
1740 }
1741
1742 if (existingCifsSes) {
1743 pSesInfo = existingCifsSes;
bf820679 1744 cFYI(1, ("Existing smb sess found"));
f99d49ad 1745 kfree(volume_info.password);
1da177e4
LT		 1746 /* volume_info.UNC freed at end of function */
1747 } else if (!rc) {
bf820679 1748 cFYI(1, ("Existing smb sess not found"));
1da177e4
LT		 1749 pSesInfo = sesInfoAlloc();
1750 if (pSesInfo == NULL)
1751 rc = -ENOMEM;
1752 else {
1753 pSesInfo->server = srvTcp;
1754 sprintf(pSesInfo->serverName, "%u.%u.%u.%u",
1755 NIPQUAD(sin_server.sin_addr.s_addr));
1756 }
1757
1758 if (!rc){
1759 /* volume_info.password freed at unmount */
1760 if (volume_info.password)
1761 pSesInfo->password = volume_info.password;
1762 if (volume_info.username)
1763 strncpy(pSesInfo->userName,
1764 volume_info.username,MAX_USERNAME_SIZE);
1765 if (volume_info.domainname)
1766 strncpy(pSesInfo->domainName,
1767 volume_info.domainname,MAX_USERNAME_SIZE);
1768 pSesInfo->linux_uid = volume_info.linux_uid;
1769 down(&pSesInfo->sesSem);
1770 rc = cifs_setup_session(xid,pSesInfo, cifs_sb->local_nls);
1771 up(&pSesInfo->sesSem);
1772 if(!rc)
1773 atomic_inc(&srvTcp->socketUseCount);
1774 } else
f99d49ad 1775 kfree(volume_info.password);
1da177e4
LT		 1776 }
1777
1778 /* search for existing tcon to this server share */
1779 if (!rc) {
0ae0efad
SF		 1780 if(volume_info.rsize > CIFSMaxBufSize) {
1781 cERROR(1,("rsize %d too large, using MaxBufSize",
1782 volume_info.rsize));
1783 cifs_sb->rsize = CIFSMaxBufSize;
1784 } else if((volume_info.rsize) && (volume_info.rsize <= CIFSMaxBufSize))
1da177e4 1785 cifs_sb->rsize = volume_info.rsize;
0ae0efad
SF		 1786 else /* default */
1787 cifs_sb->rsize = CIFSMaxBufSize;
1788
1789 if(volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) {
1790 cERROR(1,("wsize %d too large using 4096 instead",
1791 volume_info.wsize));
1792 cifs_sb->wsize = 4096;
1793 } else if(volume_info.wsize)
1da177e4
LT		 1794 cifs_sb->wsize = volume_info.wsize;
1795 else
17cbbafe 1796 cifs_sb->wsize =
1877c9ea
SF		 1797 min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE,
1798 127*1024);
17cbbafe
SF		 1799 /* old default of CIFSMaxBufSize was too small now
1800 that SMB Write2 can send multiple pages in kvec.
1801 RFC1001 does not describe what happens when frame
1802 bigger than 128K is sent so use that as max in
1803 conjunction with 52K kvec constraint on arch with 4K
1804 page size */
1805
6cec2aed
SF		 1806 if(cifs_sb->rsize < 2048) {
1807 cifs_sb->rsize = 2048;
1808 /* Windows ME may prefer this */
1809 cFYI(1,("readsize set to minimum 2048"));
1da177e4
LT		 1810 }
1811 cifs_sb->mnt_uid = volume_info.linux_uid;
1812 cifs_sb->mnt_gid = volume_info.linux_gid;
1813 cifs_sb->mnt_file_mode = volume_info.file_mode;
1814 cifs_sb->mnt_dir_mode = volume_info.dir_mode;
eeac8047
SF		 1815 cFYI(1,("file mode: 0x%x dir mode: 0x%x",
1816 cifs_sb->mnt_file_mode,cifs_sb->mnt_dir_mode));
1da177e4
LT		 1817
1818 if(volume_info.noperm)
1819 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM;
1820 if(volume_info.setuids)
1821 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID;
1822 if(volume_info.server_ino)
1823 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM;
6a0b4824
SF		 1824 if(volume_info.remap)
1825 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR;
1da177e4
LT		 1826 if(volume_info.no_xattr)
1827 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR;
d7245c2c
SF		 1828 if(volume_info.sfu_emul)
1829 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL;
c46fa8ac
SF		 1830 if(volume_info.nobrl)
1831 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL;
0a4b92c0
SF		 1832 if(volume_info.cifs_acl)
1833 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL;
ac67055e 1834
1da177e4 1835 if(volume_info.direct_io) {
c46fa8ac 1836 cFYI(1,("mounting share using direct i/o"));
1da177e4
LT		 1837 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO;
1838 }
1839
1840 tcon =
1841 find_unc(sin_server.sin_addr.s_addr, volume_info.UNC,
1842 volume_info.username);
1843 if (tcon) {
bf820679 1844 cFYI(1, ("Found match on UNC path"));
1da177e4
LT		 1845 /* we can have only one retry value for a connection
1846 to a share so for resources mounted more than once
1847 to the same server share the last value passed in
1848 for the retry flag is used */
1849 tcon->retry = volume_info.retry;
d3485d37 1850 tcon->nocase = volume_info.nocase;
1da177e4
LT		 1851 } else {
1852 tcon = tconInfoAlloc();
1853 if (tcon == NULL)
1854 rc = -ENOMEM;
1855 else {
1856 /* check for null share name ie connect to dfs root */
1857
1858 /* BB check if this works for exactly length three strings */
1859 if ((strchr(volume_info.UNC + 3, '\\') == NULL)
1860 && (strchr(volume_info.UNC + 3, '/') ==
1861 NULL)) {
737b758c
SF		 1862 rc = connect_to_dfs_path(xid, pSesInfo,
1863 "", cifs_sb->local_nls,
1864 cifs_sb->mnt_cifs_flags &
1865 CIFS_MOUNT_MAP_SPECIAL_CHR);
f99d49ad 1866 kfree(volume_info.UNC);
1da177e4
LT		 1867 FreeXid(xid);
1868 return -ENODEV;
1869 } else {
1870 rc = CIFSTCon(xid, pSesInfo,
1871 volume_info.UNC,
1872 tcon, cifs_sb->local_nls);
1873 cFYI(1, ("CIFS Tcon rc = %d", rc));
1874 }
1875 if (!rc) {
1876 atomic_inc(&pSesInfo->inUse);
1877 tcon->retry = volume_info.retry;
d3485d37 1878 tcon->nocase = volume_info.nocase;
1da177e4
LT		 1879 }
1880 }
1881 }
1882 }
1883 if(pSesInfo) {
1884 if (pSesInfo->capabilities & CAP_LARGE_FILES) {
1885 sb->s_maxbytes = (u64) 1 << 63;
1886 } else
1887 sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */
1888 }
1889
1890 sb->s_time_gran = 100;
1891
1892/* on error free sesinfo and tcon struct if needed */
1893 if (rc) {
1894 /* if session setup failed, use count is zero but
1895 we still need to free cifsd thread */
1896 if(atomic_read(&srvTcp->socketUseCount) == 0) {
1897 spin_lock(&GlobalMid_Lock);
1898 srvTcp->tcpStatus = CifsExiting;
1899 spin_unlock(&GlobalMid_Lock);
f191401f 1900 if(srvTcp->tsk) {
1da177e4 1901 send_sig(SIGKILL,srvTcp->tsk,1);
f191401f
SF		 1902 wait_for_completion(&cifsd_complete);
1903 }
1da177e4
LT		 1904 }
1905 /* If find_unc succeeded then rc == 0 so we can not end */
1906 if (tcon) /* up accidently freeing someone elses tcon struct */
1907 tconInfoFree(tcon);
1908 if (existingCifsSes == NULL) {
1909 if (pSesInfo) {
1910 if ((pSesInfo->server) &&
1911 (pSesInfo->status == CifsGood)) {
1912 int temp_rc;
1913 temp_rc = CIFSSMBLogoff(xid, pSesInfo);
1914 /* if the socketUseCount is now zero */
1915 if((temp_rc == -ESHUTDOWN) &&
f191401f 1916 (pSesInfo->server->tsk)) {
1da177e4 1917 send_sig(SIGKILL,pSesInfo->server->tsk,1);
f191401f
SF		 1918 wait_for_completion(&cifsd_complete);
1919 }
1da177e4
LT		 1920 } else
1921 cFYI(1, ("No session or bad tcon"));
1922 sesInfoFree(pSesInfo);
1923 /* pSesInfo = NULL; */
1924 }
1925 }
1926 } else {
1927 atomic_inc(&tcon->useCount);
1928 cifs_sb->tcon = tcon;
1929 tcon->ses = pSesInfo;
1930
82940a46 1931 /* do not care if following two calls succeed - informational */
737b758c
SF		 1932 CIFSSMBQFSDeviceInfo(xid, tcon);
1933 CIFSSMBQFSAttributeInfo(xid, tcon);
82940a46 1934
1da177e4 1935 if (tcon->ses->capabilities & CAP_UNIX) {
737b758c 1936 if(!CIFSSMBQFSUnixInfo(xid, tcon)) {
82940a46
SF		 1937 __u64 cap =
1938 le64_to_cpu(tcon->fsUnixInfo.Capability);
1939 cap &= CIFS_UNIX_CAP_MASK;
1940 if(volume_info.no_psx_acl)
1941 cap &= ~CIFS_UNIX_POSIX_ACL_CAP;
1942 else if(CIFS_UNIX_POSIX_ACL_CAP & cap) {
1943 cFYI(1,("negotiated posix acl support"));
1944 sb->s_flags |= MS_POSIXACL;
1da177e4 1945 }
ac67055e 1946
82940a46
SF		 1947 if(volume_info.posix_paths == 0)
1948 cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP;
1949 else if(cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) {
1950 cFYI(1,("negotiate posix pathnames"));
1951 cifs_sb->mnt_cifs_flags |=
1952 CIFS_MOUNT_POSIX_PATHS;
1953 }
1954
1955 cFYI(1,("Negotiate caps 0x%x",(int)cap));
1956
1957 if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) {
1958 cFYI(1,("setting capabilities failed"));
ac67055e 1959 }
1da177e4
LT		 1960 }
1961 }
3e84469d
SF		 1962 if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X))
1963 cifs_sb->wsize = min(cifs_sb->wsize,
1964 (tcon->ses->server->maxBuf -
1965 MAX_CIFS_HDR_SIZE));
0ae0efad
SF		 1966 if (!(tcon->ses->capabilities & CAP_LARGE_READ_X))
1967 cifs_sb->rsize = min(cifs_sb->rsize,
1968 (tcon->ses->server->maxBuf -
1969 MAX_CIFS_HDR_SIZE));
1da177e4
LT		 1970 }
1971
1972 /* volume_info.password is freed above when existing session found
1973 (in which case it is not needed anymore) but when new sesion is created
1974 the password ptr is put in the new session structure (in which case the
1975 password will be freed at unmount time) */
f99d49ad 1976 kfree(volume_info.UNC);
1da177e4
LT		 1977 FreeXid(xid);
1978 return rc;
1979}
1980
1981static int
1982CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
1983 char session_key[CIFS_SESSION_KEY_SIZE],
1984 const struct nls_table *nls_codepage)
1985{
1986 struct smb_hdr *smb_buffer;
1987 struct smb_hdr *smb_buffer_response;
1988 SESSION_SETUP_ANDX *pSMB;
1989 SESSION_SETUP_ANDX *pSMBr;
1990 char *bcc_ptr;
1991 char *user;
1992 char *domain;
1993 int rc = 0;
1994 int remaining_words = 0;
1995 int bytes_returned = 0;
1996 int len;
1997 __u32 capabilities;
1998 __u16 count;
1999
eeac8047 2000 cFYI(1, ("In sesssetup"));
1da177e4
LT		 2001 if(ses == NULL)
2002 return -EINVAL;
2003 user = ses->userName;
2004 domain = ses->domainName;
2005 smb_buffer = cifs_buf_get();
2006 if (smb_buffer == NULL) {
2007 return -ENOMEM;
2008 }
2009 smb_buffer_response = smb_buffer;
2010 pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer;
2011
2012 /* send SMBsessionSetup here */
2013 header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX,
2014 NULL /* no tCon exists yet */ , 13 /* wct */ );
2015
1982c344 2016 smb_buffer->Mid = GetNextMid(ses->server);
1da177e4
LT		 2017 pSMB->req_no_secext.AndXCommand = 0xFF;
2018 pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf);
2019 pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq);
2020
2021 if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
2022 smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
2023
2024 capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS |
2025 CAP_LARGE_WRITE_X | CAP_LARGE_READ_X;
2026 if (ses->capabilities & CAP_UNICODE) {
2027 smb_buffer->Flags2 |= SMBFLG2_UNICODE;
2028 capabilities |= CAP_UNICODE;
2029 }
2030 if (ses->capabilities & CAP_STATUS32) {
2031 smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS;
2032 capabilities |= CAP_STATUS32;
2033 }
2034 if (ses->capabilities & CAP_DFS) {
2035 smb_buffer->Flags2 |= SMBFLG2_DFS;
2036 capabilities |= CAP_DFS;
2037 }
2038 pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities);
2039
2040 pSMB->req_no_secext.CaseInsensitivePasswordLength =
2041 cpu_to_le16(CIFS_SESSION_KEY_SIZE);
2042
2043 pSMB->req_no_secext.CaseSensitivePasswordLength =
2044 cpu_to_le16(CIFS_SESSION_KEY_SIZE);
2045 bcc_ptr = pByteArea(smb_buffer);
2046 memcpy(bcc_ptr, (char *) session_key, CIFS_SESSION_KEY_SIZE);
2047 bcc_ptr += CIFS_SESSION_KEY_SIZE;
2048 memcpy(bcc_ptr, (char *) session_key, CIFS_SESSION_KEY_SIZE);
2049 bcc_ptr += CIFS_SESSION_KEY_SIZE;
2050
2051 if (ses->capabilities & CAP_UNICODE) {
2052 if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */
2053 *bcc_ptr = 0;
2054 bcc_ptr++;
2055 }
2056 if(user == NULL)
2057 bytes_returned = 0; /* skill null user */
2058 else
2059 bytes_returned =
e89dc920 2060 cifs_strtoUCS((__le16 *) bcc_ptr, user, 100,
1da177e4
LT		 2061 nls_codepage);
2062 /* convert number of 16 bit words to bytes */
2063 bcc_ptr += 2 * bytes_returned;
2064 bcc_ptr += 2; /* trailing null */
2065 if (domain == NULL)
2066 bytes_returned =
e89dc920 2067 cifs_strtoUCS((__le16 *) bcc_ptr,
1da177e4
LT		 2068 "CIFS_LINUX_DOM", 32, nls_codepage);
2069 else
2070 bytes_returned =
e89dc920 2071 cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64,
1da177e4
LT		 2072 nls_codepage);
2073 bcc_ptr += 2 * bytes_returned;
2074 bcc_ptr += 2;
2075 bytes_returned =
e89dc920 2076 cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ",
1da177e4
LT		 2077 32, nls_codepage);
2078 bcc_ptr += 2 * bytes_returned;
2079 bytes_returned =
e89dc920 2080 cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release,
1da177e4
LT		 2081 32, nls_codepage);
2082 bcc_ptr += 2 * bytes_returned;
2083 bcc_ptr += 2;
2084 bytes_returned =
e89dc920 2085 cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
1da177e4
LT		 2086 64, nls_codepage);
2087 bcc_ptr += 2 * bytes_returned;
2088 bcc_ptr += 2;
2089 } else {
2090 if(user != NULL) {
2091 strncpy(bcc_ptr, user, 200);
2092 bcc_ptr += strnlen(user, 200);
2093 }
2094 *bcc_ptr = 0;
2095 bcc_ptr++;
2096 if (domain == NULL) {
2097 strcpy(bcc_ptr, "CIFS_LINUX_DOM");
2098 bcc_ptr += strlen("CIFS_LINUX_DOM") + 1;
2099 } else {
2100 strncpy(bcc_ptr, domain, 64);
2101 bcc_ptr += strnlen(domain, 64);
2102 *bcc_ptr = 0;
2103 bcc_ptr++;
2104 }
2105 strcpy(bcc_ptr, "Linux version ");
2106 bcc_ptr += strlen("Linux version ");
2107 strcpy(bcc_ptr, system_utsname.release);
2108 bcc_ptr += strlen(system_utsname.release) + 1;
2109 strcpy(bcc_ptr, CIFS_NETWORK_OPSYS);
2110 bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1;
2111 }
2112 count = (long) bcc_ptr - (long) pByteArea(smb_buffer);
2113 smb_buffer->smb_buf_length += count;
2114 pSMB->req_no_secext.ByteCount = cpu_to_le16(count);
2115
2116 rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response,
2117 &bytes_returned, 1);
2118 if (rc) {
2119/* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */
2120 } else if ((smb_buffer_response->WordCount == 3)
2121 || (smb_buffer_response->WordCount == 4)) {
2122 __u16 action = le16_to_cpu(pSMBr->resp.Action);
2123 __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength);
2124 if (action & GUEST_LOGIN)
2125 cFYI(1, (" Guest login")); /* do we want to mark SesInfo struct ? */
2126 ses->Suid = smb_buffer_response->Uid; /* UID left in wire format (le) */
2127 cFYI(1, ("UID = %d ", ses->Suid));
2128 /* response can have either 3 or 4 word count - Samba sends 3 */
2129 bcc_ptr = pByteArea(smb_buffer_response);
2130 if ((pSMBr->resp.hdr.WordCount == 3)
2131 || ((pSMBr->resp.hdr.WordCount == 4)
2132 && (blob_len < pSMBr->resp.ByteCount))) {
2133 if (pSMBr->resp.hdr.WordCount == 4)
2134 bcc_ptr += blob_len;
2135
2136 if (smb_buffer->Flags2 & SMBFLG2_UNICODE) {
2137 if ((long) (bcc_ptr) % 2) {
2138 remaining_words =
2139 (BCC(smb_buffer_response) - 1) /2;
2140 bcc_ptr++; /* Unicode strings must be word aligned */
2141 } else {
2142 remaining_words =
2143 BCC(smb_buffer_response) / 2;
2144 }
2145 len =
2146 UniStrnlen((wchar_t *) bcc_ptr,
2147 remaining_words - 1);
2148/* We look for obvious messed up bcc or strings in response so we do not go off
2149 the end since (at least) WIN2K and Windows XP have a major bug in not null
2150 terminating last Unicode string in response */
e915fc49 2151 ses->serverOS = kzalloc(2 * (len + 1), GFP_KERNEL);
433dc24f
SF		 2152 if(ses->serverOS == NULL)
2153 goto sesssetup_nomem;
1da177e4 2154 cifs_strfromUCS_le(ses->serverOS,
e89dc920 2155 (__le16 *)bcc_ptr, len,nls_codepage);
1da177e4
LT		 2156 bcc_ptr += 2 * (len + 1);
2157 remaining_words -= len + 1;
2158 ses->serverOS[2 * len] = 0;
2159 ses->serverOS[1 + (2 * len)] = 0;
2160 if (remaining_words > 0) {
2161 len = UniStrnlen((wchar_t *)bcc_ptr,
2162 remaining_words-1);
e915fc49 2163 ses->serverNOS = kzalloc(2 * (len + 1),GFP_KERNEL);
433dc24f
SF		 2164 if(ses->serverNOS == NULL)
2165 goto sesssetup_nomem;
1da177e4 2166 cifs_strfromUCS_le(ses->serverNOS,
e89dc920 2167 (__le16 *)bcc_ptr,len,nls_codepage);
1da177e4
LT		 2168 bcc_ptr += 2 * (len + 1);
2169 ses->serverNOS[2 * len] = 0;
2170 ses->serverNOS[1 + (2 * len)] = 0;
2171 if(strncmp(ses->serverNOS,
2172 "NT LAN Manager 4",16) == 0) {
2173 cFYI(1,("NT4 server"));
2174 ses->flags |= CIFS_SES_NT4;
2175 }
2176 remaining_words -= len + 1;
2177 if (remaining_words > 0) {
433dc24f 2178 len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words);
1da177e4
LT		 2179 /* last string is not always null terminated (for e.g. for Windows XP & 2000) */
2180 ses->serverDomain =
e915fc49 2181 kzalloc(2*(len+1),GFP_KERNEL);
433dc24f
SF		 2182 if(ses->serverDomain == NULL)
2183 goto sesssetup_nomem;
1da177e4 2184 cifs_strfromUCS_le(ses->serverDomain,
e89dc920 2185 (__le16 *)bcc_ptr,len,nls_codepage);
1da177e4
LT		 2186 bcc_ptr += 2 * (len + 1);
2187 ses->serverDomain[2*len] = 0;
2188 ses->serverDomain[1+(2*len)] = 0;
2189 } /* else no more room so create dummy domain string */
2190 else
433dc24f 2191 ses->serverDomain =
e915fc49 2192 kzalloc(2, GFP_KERNEL);
1da177e4 2193 } else { /* no room so create dummy domain and NOS string */
433dc24f
SF		 2194 /* if these kcallocs fail not much we
2195 can do, but better to not fail the
2196 sesssetup itself */
1da177e4 2197 ses->serverDomain =
e915fc49 2198 kzalloc(2, GFP_KERNEL);
1da177e4 2199 ses->serverNOS =
e915fc49 2200 kzalloc(2, GFP_KERNEL);
1da177e4
LT		 2201 }
2202 } else { /* ASCII */
2203 len = strnlen(bcc_ptr, 1024);
2204 if (((long) bcc_ptr + len) - (long)
2205 pByteArea(smb_buffer_response)
2206 <= BCC(smb_buffer_response)) {
e915fc49 2207 ses->serverOS = kzalloc(len + 1,GFP_KERNEL);
433dc24f
SF		 2208 if(ses->serverOS == NULL)
2209 goto sesssetup_nomem;
1da177e4
LT		 2210 strncpy(ses->serverOS,bcc_ptr, len);
2211
2212 bcc_ptr += len;
2213 bcc_ptr[0] = 0; /* null terminate the string */
2214 bcc_ptr++;
2215
2216 len = strnlen(bcc_ptr, 1024);
e915fc49 2217 ses->serverNOS = kzalloc(len + 1,GFP_KERNEL);
433dc24f
SF		 2218 if(ses->serverNOS == NULL)
2219 goto sesssetup_nomem;
1da177e4
LT		 2220 strncpy(ses->serverNOS, bcc_ptr, len);
2221 bcc_ptr += len;
2222 bcc_ptr[0] = 0;
2223 bcc_ptr++;
2224
2225 len = strnlen(bcc_ptr, 1024);
e915fc49 2226 ses->serverDomain = kzalloc(len + 1,GFP_KERNEL);
433dc24f
SF		 2227 if(ses->serverDomain == NULL)
2228 goto sesssetup_nomem;
1da177e4
LT		 2229 strncpy(ses->serverDomain, bcc_ptr, len);
2230 bcc_ptr += len;
2231 bcc_ptr[0] = 0;
2232 bcc_ptr++;
2233 } else
2234 cFYI(1,
2235 ("Variable field of length %d extends beyond end of smb ",
2236 len));
2237 }
2238 } else {
2239 cERROR(1,
2240 (" Security Blob Length extends beyond end of SMB"));
2241 }
2242 } else {
2243 cERROR(1,
2244 (" Invalid Word count %d: ",
2245 smb_buffer_response->WordCount));
2246 rc = -EIO;
2247 }
433dc24f
SF		 2248sesssetup_nomem: /* do not return an error on nomem for the info strings,
2249 since that could make reconnection harder, and
2250 reconnection might be needed to free memory */
1da177e4
LT		 2251 if (smb_buffer)
2252 cifs_buf_release(smb_buffer);
2253
2254 return rc;
2255}
2256
2257static int
2258CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
2259 char *SecurityBlob,int SecurityBlobLength,
2260 const struct nls_table *nls_codepage)
2261{
2262 struct smb_hdr *smb_buffer;
2263 struct smb_hdr *smb_buffer_response;
2264 SESSION_SETUP_ANDX *pSMB;
2265 SESSION_SETUP_ANDX *pSMBr;
2266 char *bcc_ptr;
2267 char *user;
2268 char *domain;
2269 int rc = 0;
2270 int remaining_words = 0;
2271 int bytes_returned = 0;
2272 int len;
2273 __u32 capabilities;
2274 __u16 count;
2275
2276 cFYI(1, ("In spnego sesssetup "));
2277 if(ses == NULL)
2278 return -EINVAL;
2279 user = ses->userName;
2280 domain = ses->domainName;
2281
2282 smb_buffer = cifs_buf_get();
2283 if (smb_buffer == NULL) {
2284 return -ENOMEM;
2285 }
2286 smb_buffer_response = smb_buffer;
2287 pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer;
2288
2289 /* send SMBsessionSetup here */
2290 header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX,
2291 NULL /* no tCon exists yet */ , 12 /* wct */ );
1982c344
SF		 2292
2293 smb_buffer->Mid = GetNextMid(ses->server);
1da177e4
LT		 2294 pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
2295 pSMB->req.AndXCommand = 0xFF;
184ed211
SF		 2296 if(ses->server->maxBuf > 64*1024)
2297 ses->server->maxBuf = (64*1023);
1da177e4
LT		 2298 pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf);
2299 pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq);
2300
2301 if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
2302 smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
2303
2304 capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS |
2305 CAP_EXTENDED_SECURITY;
2306 if (ses->capabilities & CAP_UNICODE) {
2307 smb_buffer->Flags2 |= SMBFLG2_UNICODE;
2308 capabilities |= CAP_UNICODE;
2309 }
2310 if (ses->capabilities & CAP_STATUS32) {
2311 smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS;
2312 capabilities |= CAP_STATUS32;
2313 }
2314 if (ses->capabilities & CAP_DFS) {
2315 smb_buffer->Flags2 |= SMBFLG2_DFS;
2316 capabilities |= CAP_DFS;
2317 }
2318 pSMB->req.Capabilities = cpu_to_le32(capabilities);
2319
2320 pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength);
2321 bcc_ptr = pByteArea(smb_buffer);
2322 memcpy(bcc_ptr, SecurityBlob, SecurityBlobLength);
2323 bcc_ptr += SecurityBlobLength;
2324
2325 if (ses->capabilities & CAP_UNICODE) {
2326 if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode strings */
2327 *bcc_ptr = 0;
2328 bcc_ptr++;
2329 }
2330 bytes_returned =
e89dc920 2331 cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, nls_codepage);
1da177e4
LT		 2332 bcc_ptr += 2 * bytes_returned; /* convert num of 16 bit words to bytes */
2333 bcc_ptr += 2; /* trailing null */
2334 if (domain == NULL)
2335 bytes_returned =
e89dc920 2336 cifs_strtoUCS((__le16 *) bcc_ptr,
1da177e4
LT		 2337 "CIFS_LINUX_DOM", 32, nls_codepage);
2338 else
2339 bytes_returned =
e89dc920 2340 cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64,
1da177e4
LT		 2341 nls_codepage);
2342 bcc_ptr += 2 * bytes_returned;
2343 bcc_ptr += 2;
2344 bytes_returned =
e89dc920 2345 cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ",
1da177e4
LT		 2346 32, nls_codepage);
2347 bcc_ptr += 2 * bytes_returned;
2348 bytes_returned =
e89dc920 2349 cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release, 32,
1da177e4
LT		 2350 nls_codepage);
2351 bcc_ptr += 2 * bytes_returned;
2352 bcc_ptr += 2;
2353 bytes_returned =
e89dc920 2354 cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
1da177e4
LT		 2355 64, nls_codepage);
2356 bcc_ptr += 2 * bytes_returned;
2357 bcc_ptr += 2;
2358 } else {
2359 strncpy(bcc_ptr, user, 200);
2360 bcc_ptr += strnlen(user, 200);
2361 *bcc_ptr = 0;
2362 bcc_ptr++;
2363 if (domain == NULL) {
2364 strcpy(bcc_ptr, "CIFS_LINUX_DOM");
2365 bcc_ptr += strlen("CIFS_LINUX_DOM") + 1;
2366 } else {
2367 strncpy(bcc_ptr, domain, 64);
2368 bcc_ptr += strnlen(domain, 64);
2369 *bcc_ptr = 0;
2370 bcc_ptr++;
2371 }
2372 strcpy(bcc_ptr, "Linux version ");
2373 bcc_ptr += strlen("Linux version ");
2374 strcpy(bcc_ptr, system_utsname.release);
2375 bcc_ptr += strlen(system_utsname.release) + 1;
2376 strcpy(bcc_ptr, CIFS_NETWORK_OPSYS);
2377 bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1;
2378 }
2379 count = (long) bcc_ptr - (long) pByteArea(smb_buffer);
2380 smb_buffer->smb_buf_length += count;
2381 pSMB->req.ByteCount = cpu_to_le16(count);
2382
2383 rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response,
2384 &bytes_returned, 1);
2385 if (rc) {
2386/* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */
2387 } else if ((smb_buffer_response->WordCount == 3)
2388 || (smb_buffer_response->WordCount == 4)) {
2389 __u16 action = le16_to_cpu(pSMBr->resp.Action);
2390 __u16 blob_len =
2391 le16_to_cpu(pSMBr->resp.SecurityBlobLength);
2392 if (action & GUEST_LOGIN)
2393 cFYI(1, (" Guest login")); /* BB do we want to set anything in SesInfo struct ? */
2394 if (ses) {
2395 ses->Suid = smb_buffer_response->Uid; /* UID left in wire format (le) */
2396 cFYI(1, ("UID = %d ", ses->Suid));
2397 bcc_ptr = pByteArea(smb_buffer_response); /* response can have either 3 or 4 word count - Samba sends 3 */
2398
2399 /* BB Fix below to make endian neutral !! */
2400
2401 if ((pSMBr->resp.hdr.WordCount == 3)
2402 || ((pSMBr->resp.hdr.WordCount == 4)
2403 && (blob_len <
2404 pSMBr->resp.ByteCount))) {
2405 if (pSMBr->resp.hdr.WordCount == 4) {
2406 bcc_ptr +=
2407 blob_len;
2408 cFYI(1,
2409 ("Security Blob Length %d ",
2410 blob_len));
2411 }
2412
2413 if (smb_buffer->Flags2 & SMBFLG2_UNICODE) {
2414 if ((long) (bcc_ptr) % 2) {
2415 remaining_words =
2416 (BCC(smb_buffer_response)
2417 - 1) / 2;
2418 bcc_ptr++; /* Unicode strings must be word aligned */
2419 } else {
2420 remaining_words =
2421 BCC
2422 (smb_buffer_response) / 2;
2423 }
2424 len =
2425 UniStrnlen((wchar_t *) bcc_ptr,
2426 remaining_words - 1);
2427/* We look for obvious messed up bcc or strings in response so we do not go off
2428 the end since (at least) WIN2K and Windows XP have a major bug in not null
2429 terminating last Unicode string in response */
2430 ses->serverOS =
e915fc49 2431 kzalloc(2 * (len + 1), GFP_KERNEL);
1da177e4 2432 cifs_strfromUCS_le(ses->serverOS,
e89dc920 2433 (__le16 *)
1da177e4
LT		 2434 bcc_ptr, len,
2435 nls_codepage);
2436 bcc_ptr += 2 * (len + 1);
2437 remaining_words -= len + 1;
2438 ses->serverOS[2 * len] = 0;
2439 ses->serverOS[1 + (2 * len)] = 0;
2440 if (remaining_words > 0) {
2441 len = UniStrnlen((wchar_t *)bcc_ptr,
2442 remaining_words
2443 - 1);
2444 ses->serverNOS =
e915fc49 2445 kzalloc(2 * (len + 1),
1da177e4
LT		 2446 GFP_KERNEL);
2447 cifs_strfromUCS_le(ses->serverNOS,
e89dc920 2448 (__le16 *)bcc_ptr,
1da177e4
LT		 2449 len,
2450 nls_codepage);
2451 bcc_ptr += 2 * (len + 1);
2452 ses->serverNOS[2 * len] = 0;
2453 ses->serverNOS[1 + (2 * len)] = 0;
2454 remaining_words -= len + 1;
2455 if (remaining_words > 0) {
2456 len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words);
2457 /* last string is not always null terminated (for e.g. for Windows XP & 2000) */
e915fc49 2458 ses->serverDomain = kzalloc(2*(len+1),GFP_KERNEL);
1da177e4 2459 cifs_strfromUCS_le(ses->serverDomain,
e89dc920
SF		 2460 (__le16 *)bcc_ptr,
2461 len, nls_codepage);
1da177e4
LT		 2462 bcc_ptr += 2*(len+1);
2463 ses->serverDomain[2*len] = 0;
2464 ses->serverDomain[1+(2*len)] = 0;
2465 } /* else no more room so create dummy domain string */
2466 else
2467 ses->serverDomain =
e915fc49 2468 kzalloc(2,GFP_KERNEL);
1da177e4 2469 } else { /* no room so create dummy domain and NOS string */
e915fc49
PE		 2470 ses->serverDomain = kzalloc(2, GFP_KERNEL);
2471 ses->serverNOS = kzalloc(2, GFP_KERNEL);
1da177e4
LT		 2472 }
2473 } else { /* ASCII */
2474
2475 len = strnlen(bcc_ptr, 1024);
2476 if (((long) bcc_ptr + len) - (long)
2477 pByteArea(smb_buffer_response)
2478 <= BCC(smb_buffer_response)) {
e915fc49 2479 ses->serverOS = kzalloc(len + 1, GFP_KERNEL);
1da177e4
LT		 2480 strncpy(ses->serverOS, bcc_ptr, len);
2481
2482 bcc_ptr += len;
2483 bcc_ptr[0] = 0; /* null terminate the string */
2484 bcc_ptr++;
2485
2486 len = strnlen(bcc_ptr, 1024);
e915fc49 2487 ses->serverNOS = kzalloc(len + 1,GFP_KERNEL);
1da177e4
LT		 2488 strncpy(ses->serverNOS, bcc_ptr, len);
2489 bcc_ptr += len;
2490 bcc_ptr[0] = 0;
2491 bcc_ptr++;
2492
2493 len = strnlen(bcc_ptr, 1024);
e915fc49 2494 ses->serverDomain = kzalloc(len + 1, GFP_KERNEL);
1da177e4
LT		 2495 strncpy(ses->serverDomain, bcc_ptr, len);
2496 bcc_ptr += len;
2497 bcc_ptr[0] = 0;
2498 bcc_ptr++;
2499 } else
2500 cFYI(1,
2501 ("Variable field of length %d extends beyond end of smb ",
2502 len));
2503 }
2504 } else {
2505 cERROR(1,
2506 (" Security Blob Length extends beyond end of SMB"));
2507 }
2508 } else {
2509 cERROR(1, ("No session structure passed in."));
2510 }
2511 } else {
2512 cERROR(1,
2513 (" Invalid Word count %d: ",
2514 smb_buffer_response->WordCount));
2515 rc = -EIO;
2516 }
2517
2518 if (smb_buffer)
2519 cifs_buf_release(smb_buffer);
2520
2521 return rc;
2522}
2523
2524static int
2525CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
2526 struct cifsSesInfo *ses, int * pNTLMv2_flag,
2527 const struct nls_table *nls_codepage)
2528{
2529 struct smb_hdr *smb_buffer;
2530 struct smb_hdr *smb_buffer_response;
2531 SESSION_SETUP_ANDX *pSMB;
2532 SESSION_SETUP_ANDX *pSMBr;
2533 char *bcc_ptr;
2534 char *domain;
2535 int rc = 0;
2536 int remaining_words = 0;
2537 int bytes_returned = 0;
2538 int len;
2539 int SecurityBlobLength = sizeof (NEGOTIATE_MESSAGE);
2540 PNEGOTIATE_MESSAGE SecurityBlob;
2541 PCHALLENGE_MESSAGE SecurityBlob2;
2542 __u32 negotiate_flags, capabilities;
2543 __u16 count;
2544
12b3b8ff 2545 cFYI(1, ("In NTLMSSP sesssetup (negotiate)"));
1da177e4
LT		 2546 if(ses == NULL)
2547 return -EINVAL;
2548 domain = ses->domainName;
2549 *pNTLMv2_flag = FALSE;
2550 smb_buffer = cifs_buf_get();
2551 if (smb_buffer == NULL) {
2552 return -ENOMEM;
2553 }
2554 smb_buffer_response = smb_buffer;
2555 pSMB = (SESSION_SETUP_ANDX *) smb_buffer;
2556 pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response;
2557
2558 /* send SMBsessionSetup here */
2559 header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX,
2560 NULL /* no tCon exists yet */ , 12 /* wct */ );
1982c344
SF		 2561
2562 smb_buffer->Mid = GetNextMid(ses->server);
1da177e4
LT		 2563 pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
2564 pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT);
2565
2566 pSMB->req.AndXCommand = 0xFF;
2567 pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf);
2568 pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq);
2569
2570 if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
2571 smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
2572
2573 capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS |
2574 CAP_EXTENDED_SECURITY;
2575 if (ses->capabilities & CAP_UNICODE) {
2576 smb_buffer->Flags2 |= SMBFLG2_UNICODE;
2577 capabilities |= CAP_UNICODE;
2578 }
2579 if (ses->capabilities & CAP_STATUS32) {
2580 smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS;
2581 capabilities |= CAP_STATUS32;
2582 }
2583 if (ses->capabilities & CAP_DFS) {
2584 smb_buffer->Flags2 |= SMBFLG2_DFS;
2585 capabilities |= CAP_DFS;
2586 }
2587 pSMB->req.Capabilities = cpu_to_le32(capabilities);
2588
2589 bcc_ptr = (char *) &pSMB->req.SecurityBlob;
2590 SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr;
2591 strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8);
2592 SecurityBlob->MessageType = NtLmNegotiate;
2593 negotiate_flags =
2594 NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM |
12b3b8ff
SF		 2595 NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM |
2596 NTLMSSP_NEGOTIATE_56 |
1da177e4
LT		 2597 /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128;
2598 if(sign_CIFS_PDUs)
2599 negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN;
2600 if(ntlmv2_support)
2601 negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;
2602 /* setup pointers to domain name and workstation name */
2603 bcc_ptr += SecurityBlobLength;
2604
2605 SecurityBlob->WorkstationName.Buffer = 0;
2606 SecurityBlob->WorkstationName.Length = 0;
2607 SecurityBlob->WorkstationName.MaximumLength = 0;
2608
12b3b8ff
SF		 2609 /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent
2610 along with username on auth request (ie the response to challenge) */
2611 SecurityBlob->DomainName.Buffer = 0;
2612 SecurityBlob->DomainName.Length = 0;
2613 SecurityBlob->DomainName.MaximumLength = 0;
1da177e4
LT		 2614 if (ses->capabilities & CAP_UNICODE) {
2615 if ((long) bcc_ptr % 2) {
2616 *bcc_ptr = 0;
2617 bcc_ptr++;
2618 }
2619
2620 bytes_returned =
e89dc920 2621 cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ",
1da177e4
LT		 2622 32, nls_codepage);
2623 bcc_ptr += 2 * bytes_returned;
2624 bytes_returned =
e89dc920 2625 cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release, 32,
1da177e4
LT		 2626 nls_codepage);
2627 bcc_ptr += 2 * bytes_returned;
2628 bcc_ptr += 2; /* null terminate Linux version */
2629 bytes_returned =
e89dc920 2630 cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
1da177e4
LT		 2631 64, nls_codepage);
2632 bcc_ptr += 2 * bytes_returned;
2633 *(bcc_ptr + 1) = 0;
2634 *(bcc_ptr + 2) = 0;
2635 bcc_ptr += 2; /* null terminate network opsys string */
2636 *(bcc_ptr + 1) = 0;
2637 *(bcc_ptr + 2) = 0;
2638 bcc_ptr += 2; /* null domain */
2639 } else { /* ASCII */
2640 strcpy(bcc_ptr, "Linux version ");
2641 bcc_ptr += strlen("Linux version ");
2642 strcpy(bcc_ptr, system_utsname.release);
2643 bcc_ptr += strlen(system_utsname.release) + 1;
2644 strcpy(bcc_ptr, CIFS_NETWORK_OPSYS);
2645 bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1;
2646 bcc_ptr++; /* empty domain field */
2647 *bcc_ptr = 0;
2648 }
2649 SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags);
2650 pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength);
2651 count = (long) bcc_ptr - (long) pByteArea(smb_buffer);
2652 smb_buffer->smb_buf_length += count;
2653 pSMB->req.ByteCount = cpu_to_le16(count);
2654
2655 rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response,
2656 &bytes_returned, 1);
2657
2658 if (smb_buffer_response->Status.CifsError ==
2659 cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED))
2660 rc = 0;
2661
2662 if (rc) {
2663/* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */
2664 } else if ((smb_buffer_response->WordCount == 3)
2665 || (smb_buffer_response->WordCount == 4)) {
2666 __u16 action = le16_to_cpu(pSMBr->resp.Action);
2667 __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength);
2668
2669 if (action & GUEST_LOGIN)
2670 cFYI(1, (" Guest login"));
2671 /* Do we want to set anything in SesInfo struct when guest login? */
2672
2673 bcc_ptr = pByteArea(smb_buffer_response);
2674 /* response can have either 3 or 4 word count - Samba sends 3 */
2675
2676 SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr;
2677 if (SecurityBlob2->MessageType != NtLmChallenge) {
2678 cFYI(1,
2679 ("Unexpected NTLMSSP message type received %d",
2680 SecurityBlob2->MessageType));
2681 } else if (ses) {
2682 ses->Suid = smb_buffer_response->Uid; /* UID left in le format */
12b3b8ff 2683 cFYI(1, ("UID = %d", ses->Suid));
1da177e4
LT		 2684 if ((pSMBr->resp.hdr.WordCount == 3)
2685 || ((pSMBr->resp.hdr.WordCount == 4)
2686 && (blob_len <
2687 pSMBr->resp.ByteCount))) {
2688
2689 if (pSMBr->resp.hdr.WordCount == 4) {
2690 bcc_ptr += blob_len;
12b3b8ff 2691 cFYI(1, ("Security Blob Length %d",
1da177e4
LT		 2692 blob_len));
2693 }
2694
12b3b8ff 2695 cFYI(1, ("NTLMSSP Challenge rcvd"));
1da177e4
LT		 2696
2697 memcpy(ses->server->cryptKey,
2698 SecurityBlob2->Challenge,
2699 CIFS_CRYPTO_KEY_SIZE);
12b3b8ff
SF		 2700 if(SecurityBlob2->NegotiateFlags &
2701 cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2))
1da177e4
LT		 2702 *pNTLMv2_flag = TRUE;
2703
2704 if((SecurityBlob2->NegotiateFlags &
2705 cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN))
2706 || (sign_CIFS_PDUs > 1))
2707 ses->server->secMode |=
2708 SECMODE_SIGN_REQUIRED;
2709 if ((SecurityBlob2->NegotiateFlags &
2710 cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs))
2711 ses->server->secMode |=
2712 SECMODE_SIGN_ENABLED;
2713
2714 if (smb_buffer->Flags2 & SMBFLG2_UNICODE) {
2715 if ((long) (bcc_ptr) % 2) {
2716 remaining_words =
2717 (BCC(smb_buffer_response)
2718 - 1) / 2;
2719 bcc_ptr++; /* Unicode strings must be word aligned */
2720 } else {
2721 remaining_words =
2722 BCC
2723 (smb_buffer_response) / 2;
2724 }
2725 len =
2726 UniStrnlen((wchar_t *) bcc_ptr,
2727 remaining_words - 1);
2728/* We look for obvious messed up bcc or strings in response so we do not go off
2729 the end since (at least) WIN2K and Windows XP have a major bug in not null
2730 terminating last Unicode string in response */
2731 ses->serverOS =
e915fc49 2732 kzalloc(2 * (len + 1), GFP_KERNEL);
1da177e4 2733 cifs_strfromUCS_le(ses->serverOS,
e89dc920 2734 (__le16 *)
1da177e4
LT		 2735 bcc_ptr, len,
2736 nls_codepage);
2737 bcc_ptr += 2 * (len + 1);
2738 remaining_words -= len + 1;
2739 ses->serverOS[2 * len] = 0;
2740 ses->serverOS[1 + (2 * len)] = 0;
2741 if (remaining_words > 0) {
2742 len = UniStrnlen((wchar_t *)
2743 bcc_ptr,
2744 remaining_words
2745 - 1);
2746 ses->serverNOS =
e915fc49 2747 kzalloc(2 * (len + 1),
1da177e4
LT		 2748 GFP_KERNEL);
2749 cifs_strfromUCS_le(ses->
2750 serverNOS,
e89dc920 2751 (__le16 *)
1da177e4
LT		 2752 bcc_ptr,
2753 len,
2754 nls_codepage);
2755 bcc_ptr += 2 * (len + 1);
2756 ses->serverNOS[2 * len] = 0;
2757 ses->serverNOS[1 +
2758 (2 * len)] = 0;
2759 remaining_words -= len + 1;
2760 if (remaining_words > 0) {
2761 len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words);
2762 /* last string is not always null terminated (for e.g. for Windows XP & 2000) */
2763 ses->serverDomain =
e915fc49 2764 kzalloc(2 *
1da177e4
LT		 2765 (len +
2766 1),
2767 GFP_KERNEL);
2768 cifs_strfromUCS_le
e89dc920
SF		 2769 (ses->serverDomain,
2770 (__le16 *)bcc_ptr,
2771 len, nls_codepage);
1da177e4
LT		 2772 bcc_ptr +=
2773 2 * (len + 1);
e89dc920 2774 ses->serverDomain[2*len]
1da177e4 2775 = 0;
e89dc920
SF		 2776 ses->serverDomain
2777 [1 + (2 * len)]
1da177e4
LT		 2778 = 0;
2779 } /* else no more room so create dummy domain string */
2780 else
2781 ses->serverDomain =
e915fc49 2782 kzalloc(2,
1da177e4
LT		 2783 GFP_KERNEL);
2784 } else { /* no room so create dummy domain and NOS string */
2785 ses->serverDomain =
e915fc49 2786 kzalloc(2, GFP_KERNEL);
1da177e4 2787 ses->serverNOS =
e915fc49 2788 kzalloc(2, GFP_KERNEL);
1da177e4
LT		 2789 }
2790 } else { /* ASCII */
2791 len = strnlen(bcc_ptr, 1024);
2792 if (((long) bcc_ptr + len) - (long)
2793 pByteArea(smb_buffer_response)
2794 <= BCC(smb_buffer_response)) {
2795 ses->serverOS =
e915fc49 2796 kzalloc(len + 1,
1da177e4
LT		 2797 GFP_KERNEL);
2798 strncpy(ses->serverOS,
2799 bcc_ptr, len);
2800
2801 bcc_ptr += len;
2802 bcc_ptr[0] = 0; /* null terminate string */
2803 bcc_ptr++;
2804
2805 len = strnlen(bcc_ptr, 1024);
2806 ses->serverNOS =
e915fc49 2807 kzalloc(len + 1,
1da177e4
LT		 2808 GFP_KERNEL);
2809 strncpy(ses->serverNOS, bcc_ptr, len);
2810 bcc_ptr += len;
2811 bcc_ptr[0] = 0;
2812 bcc_ptr++;
2813
2814 len = strnlen(bcc_ptr, 1024);
2815 ses->serverDomain =
e915fc49 2816 kzalloc(len + 1,
1da177e4
LT		 2817 GFP_KERNEL);
2818 strncpy(ses->serverDomain, bcc_ptr, len);
2819 bcc_ptr += len;
2820 bcc_ptr[0] = 0;
2821 bcc_ptr++;
2822 } else
2823 cFYI(1,
12b3b8ff 2824 ("Variable field of length %d extends beyond end of smb",
1da177e4
LT		 2825 len));
2826 }
2827 } else {
2828 cERROR(1,
2829 (" Security Blob Length extends beyond end of SMB"));
2830 }
2831 } else {
2832 cERROR(1, ("No session structure passed in."));
2833 }
2834 } else {
2835 cERROR(1,
5815449d 2836 (" Invalid Word count %d:",
1da177e4
LT		 2837 smb_buffer_response->WordCount));
2838 rc = -EIO;
2839 }
2840
2841 if (smb_buffer)
2842 cifs_buf_release(smb_buffer);
2843
2844 return rc;
2845}
2846static int
2847CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
2848 char *ntlm_session_key, int ntlmv2_flag,
2849 const struct nls_table *nls_codepage)
2850{
2851 struct smb_hdr *smb_buffer;
2852 struct smb_hdr *smb_buffer_response;
2853 SESSION_SETUP_ANDX *pSMB;
2854 SESSION_SETUP_ANDX *pSMBr;
2855 char *bcc_ptr;
2856 char *user;
2857 char *domain;
2858 int rc = 0;
2859 int remaining_words = 0;
2860 int bytes_returned = 0;
2861 int len;
2862 int SecurityBlobLength = sizeof (AUTHENTICATE_MESSAGE);
2863 PAUTHENTICATE_MESSAGE SecurityBlob;
2864 __u32 negotiate_flags, capabilities;
2865 __u16 count;
2866
2867 cFYI(1, ("In NTLMSSPSessSetup (Authenticate)"));
2868 if(ses == NULL)
2869 return -EINVAL;
2870 user = ses->userName;
2871 domain = ses->domainName;
2872 smb_buffer = cifs_buf_get();
2873 if (smb_buffer == NULL) {
2874 return -ENOMEM;
2875 }
2876 smb_buffer_response = smb_buffer;
2877 pSMB = (SESSION_SETUP_ANDX *) smb_buffer;
2878 pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response;
2879
2880 /* send SMBsessionSetup here */
2881 header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX,
2882 NULL /* no tCon exists yet */ , 12 /* wct */ );
1982c344
SF		 2883
2884 smb_buffer->Mid = GetNextMid(ses->server);
1da177e4
LT		 2885 pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT);
2886 pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
2887 pSMB->req.AndXCommand = 0xFF;
2888 pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf);
2889 pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq);
2890
2891 pSMB->req.hdr.Uid = ses->Suid;
2892
2893 if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
2894 smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
2895
2896 capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS |
2897 CAP_EXTENDED_SECURITY;
2898 if (ses->capabilities & CAP_UNICODE) {
2899 smb_buffer->Flags2 |= SMBFLG2_UNICODE;
2900 capabilities |= CAP_UNICODE;
2901 }
2902 if (ses->capabilities & CAP_STATUS32) {
2903 smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS;
2904 capabilities |= CAP_STATUS32;
2905 }
2906 if (ses->capabilities & CAP_DFS) {
2907 smb_buffer->Flags2 |= SMBFLG2_DFS;
2908 capabilities |= CAP_DFS;
2909 }
2910 pSMB->req.Capabilities = cpu_to_le32(capabilities);
2911
2912 bcc_ptr = (char *) &pSMB->req.SecurityBlob;
2913 SecurityBlob = (PAUTHENTICATE_MESSAGE) bcc_ptr;
2914 strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8);
2915 SecurityBlob->MessageType = NtLmAuthenticate;
2916 bcc_ptr += SecurityBlobLength;
2917 negotiate_flags =
2918 NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET |
2919 NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO |
2920 0x80000000 | NTLMSSP_NEGOTIATE_128;
2921 if(sign_CIFS_PDUs)
2922 negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN;
2923 if(ntlmv2_flag)
2924 negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;
2925
2926/* setup pointers to domain name and workstation name */
2927
2928 SecurityBlob->WorkstationName.Buffer = 0;
2929 SecurityBlob->WorkstationName.Length = 0;
2930 SecurityBlob->WorkstationName.MaximumLength = 0;
2931 SecurityBlob->SessionKey.Length = 0;
2932 SecurityBlob->SessionKey.MaximumLength = 0;
2933 SecurityBlob->SessionKey.Buffer = 0;
2934
2935 SecurityBlob->LmChallengeResponse.Length = 0;
2936 SecurityBlob->LmChallengeResponse.MaximumLength = 0;
2937 SecurityBlob->LmChallengeResponse.Buffer = 0;
2938
2939 SecurityBlob->NtChallengeResponse.Length =
2940 cpu_to_le16(CIFS_SESSION_KEY_SIZE);
2941 SecurityBlob->NtChallengeResponse.MaximumLength =
2942 cpu_to_le16(CIFS_SESSION_KEY_SIZE);
2943 memcpy(bcc_ptr, ntlm_session_key, CIFS_SESSION_KEY_SIZE);
2944 SecurityBlob->NtChallengeResponse.Buffer =
2945 cpu_to_le32(SecurityBlobLength);
2946 SecurityBlobLength += CIFS_SESSION_KEY_SIZE;
2947 bcc_ptr += CIFS_SESSION_KEY_SIZE;
2948
2949 if (ses->capabilities & CAP_UNICODE) {
2950 if (domain == NULL) {
2951 SecurityBlob->DomainName.Buffer = 0;
2952 SecurityBlob->DomainName.Length = 0;
2953 SecurityBlob->DomainName.MaximumLength = 0;
2954 } else {
2955 __u16 len =
e89dc920 2956 cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64,
1da177e4
LT		 2957 nls_codepage);
2958 len *= 2;
2959 SecurityBlob->DomainName.MaximumLength =
2960 cpu_to_le16(len);
2961 SecurityBlob->DomainName.Buffer =
2962 cpu_to_le32(SecurityBlobLength);
2963 bcc_ptr += len;
2964 SecurityBlobLength += len;
2965 SecurityBlob->DomainName.Length =
2966 cpu_to_le16(len);
2967 }
2968 if (user == NULL) {
2969 SecurityBlob->UserName.Buffer = 0;
2970 SecurityBlob->UserName.Length = 0;
2971 SecurityBlob->UserName.MaximumLength = 0;
2972 } else {
2973 __u16 len =
e89dc920 2974 cifs_strtoUCS((__le16 *) bcc_ptr, user, 64,
1da177e4
LT		 2975 nls_codepage);
2976 len *= 2;
2977 SecurityBlob->UserName.MaximumLength =
2978 cpu_to_le16(len);
2979 SecurityBlob->UserName.Buffer =
2980 cpu_to_le32(SecurityBlobLength);
2981 bcc_ptr += len;
2982 SecurityBlobLength += len;
2983 SecurityBlob->UserName.Length =
2984 cpu_to_le16(len);
2985 }
2986
e89dc920 2987 /* SecurityBlob->WorkstationName.Length = cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage);
1da177e4
LT		 2988 SecurityBlob->WorkstationName.Length *= 2;
2989 SecurityBlob->WorkstationName.MaximumLength = cpu_to_le16(SecurityBlob->WorkstationName.Length);
2990 SecurityBlob->WorkstationName.Buffer = cpu_to_le32(SecurityBlobLength);
2991 bcc_ptr += SecurityBlob->WorkstationName.Length;
2992 SecurityBlobLength += SecurityBlob->WorkstationName.Length;
2993 SecurityBlob->WorkstationName.Length = cpu_to_le16(SecurityBlob->WorkstationName.Length); */
2994
2995 if ((long) bcc_ptr % 2) {
2996 *bcc_ptr = 0;
2997 bcc_ptr++;
2998 }
2999 bytes_returned =
e89dc920 3000 cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ",
1da177e4
LT		 3001 32, nls_codepage);
3002 bcc_ptr += 2 * bytes_returned;
3003 bytes_returned =
e89dc920 3004 cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release, 32,
1da177e4
LT		 3005 nls_codepage);
3006 bcc_ptr += 2 * bytes_returned;
3007 bcc_ptr += 2; /* null term version string */
3008 bytes_returned =
e89dc920 3009 cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
1da177e4
LT		 3010 64, nls_codepage);
3011 bcc_ptr += 2 * bytes_returned;
3012 *(bcc_ptr + 1) = 0;
3013 *(bcc_ptr + 2) = 0;
3014 bcc_ptr += 2; /* null terminate network opsys string */
3015 *(bcc_ptr + 1) = 0;
3016 *(bcc_ptr + 2) = 0;
3017 bcc_ptr += 2; /* null domain */
3018 } else { /* ASCII */
3019 if (domain == NULL) {
3020 SecurityBlob->DomainName.Buffer = 0;
3021 SecurityBlob->DomainName.Length = 0;
3022 SecurityBlob->DomainName.MaximumLength = 0;
3023 } else {
3024 __u16 len;
3025 negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED;
3026 strncpy(bcc_ptr, domain, 63);
3027 len = strnlen(domain, 64);
3028 SecurityBlob->DomainName.MaximumLength =
3029 cpu_to_le16(len);
3030 SecurityBlob->DomainName.Buffer =
3031 cpu_to_le32(SecurityBlobLength);
3032 bcc_ptr += len;
3033 SecurityBlobLength += len;
3034 SecurityBlob->DomainName.Length = cpu_to_le16(len);
3035 }
3036 if (user == NULL) {
3037 SecurityBlob->UserName.Buffer = 0;
3038 SecurityBlob->UserName.Length = 0;
3039 SecurityBlob->UserName.MaximumLength = 0;
3040 } else {
3041 __u16 len;
3042 strncpy(bcc_ptr, user, 63);
3043 len = strnlen(user, 64);
3044 SecurityBlob->UserName.MaximumLength =
3045 cpu_to_le16(len);
3046 SecurityBlob->UserName.Buffer =
3047 cpu_to_le32(SecurityBlobLength);
3048 bcc_ptr += len;
3049 SecurityBlobLength += len;
3050 SecurityBlob->UserName.Length = cpu_to_le16(len);
3051 }
3052 /* BB fill in our workstation name if known BB */
3053
3054 strcpy(bcc_ptr, "Linux version ");
3055 bcc_ptr += strlen("Linux version ");
3056 strcpy(bcc_ptr, system_utsname.release);
3057 bcc_ptr += strlen(system_utsname.release) + 1;
3058 strcpy(bcc_ptr, CIFS_NETWORK_OPSYS);
3059 bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1;
3060 bcc_ptr++; /* null domain */
3061 *bcc_ptr = 0;
3062 }
3063 SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags);
3064 pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength);
3065 count = (long) bcc_ptr - (long) pByteArea(smb_buffer);
3066 smb_buffer->smb_buf_length += count;
3067 pSMB->req.ByteCount = cpu_to_le16(count);
3068
3069 rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response,
3070 &bytes_returned, 1);
3071 if (rc) {
3072/* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */
3073 } else if ((smb_buffer_response->WordCount == 3)
3074 || (smb_buffer_response->WordCount == 4)) {
3075 __u16 action = le16_to_cpu(pSMBr->resp.Action);
3076 __u16 blob_len =
3077 le16_to_cpu(pSMBr->resp.SecurityBlobLength);
3078 if (action & GUEST_LOGIN)
3079 cFYI(1, (" Guest login")); /* BB do we want to set anything in SesInfo struct ? */
3080/* if(SecurityBlob2->MessageType != NtLm??){
3081 cFYI("Unexpected message type on auth response is %d "));
3082 } */
3083 if (ses) {
3084 cFYI(1,
3085 ("Does UID on challenge %d match auth response UID %d ",
3086 ses->Suid, smb_buffer_response->Uid));
3087 ses->Suid = smb_buffer_response->Uid; /* UID left in wire format */
3088 bcc_ptr = pByteArea(smb_buffer_response);
3089 /* response can have either 3 or 4 word count - Samba sends 3 */
3090 if ((pSMBr->resp.hdr.WordCount == 3)
3091 || ((pSMBr->resp.hdr.WordCount == 4)
3092 && (blob_len <
3093 pSMBr->resp.ByteCount))) {
3094 if (pSMBr->resp.hdr.WordCount == 4) {
3095 bcc_ptr +=
3096 blob_len;
3097 cFYI(1,
3098 ("Security Blob Length %d ",
3099 blob_len));
3100 }
3101
3102 cFYI(1,
3103 ("NTLMSSP response to Authenticate "));
3104
3105 if (smb_buffer->Flags2 & SMBFLG2_UNICODE) {
3106 if ((long) (bcc_ptr) % 2) {
3107 remaining_words =
3108 (BCC(smb_buffer_response)
3109 - 1) / 2;
3110 bcc_ptr++; /* Unicode strings must be word aligned */
3111 } else {
3112 remaining_words = BCC(smb_buffer_response) / 2;
3113 }
3114 len =
3115 UniStrnlen((wchar_t *) bcc_ptr,remaining_words - 1);
3116/* We look for obvious messed up bcc or strings in response so we do not go off
3117 the end since (at least) WIN2K and Windows XP have a major bug in not null
3118 terminating last Unicode string in response */
3119 ses->serverOS =
e915fc49 3120 kzalloc(2 * (len + 1), GFP_KERNEL);
1da177e4 3121 cifs_strfromUCS_le(ses->serverOS,
e89dc920 3122 (__le16 *)
1da177e4
LT		 3123 bcc_ptr, len,
3124 nls_codepage);
3125 bcc_ptr += 2 * (len + 1);
3126 remaining_words -= len + 1;
3127 ses->serverOS[2 * len] = 0;
3128 ses->serverOS[1 + (2 * len)] = 0;
3129 if (remaining_words > 0) {
3130 len = UniStrnlen((wchar_t *)
3131 bcc_ptr,
3132 remaining_words
3133 - 1);
3134 ses->serverNOS =
e915fc49 3135 kzalloc(2 * (len + 1),
1da177e4
LT		 3136 GFP_KERNEL);
3137 cifs_strfromUCS_le(ses->
3138 serverNOS,
e89dc920 3139 (__le16 *)
1da177e4
LT		 3140 bcc_ptr,
3141 len,
3142 nls_codepage);
3143 bcc_ptr += 2 * (len + 1);
3144 ses->serverNOS[2 * len] = 0;
3145 ses->serverNOS[1+(2*len)] = 0;
3146 remaining_words -= len + 1;
3147 if (remaining_words > 0) {
3148 len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words);
3149 /* last string not always null terminated (e.g. for Windows XP & 2000) */
3150 ses->serverDomain =
e915fc49 3151 kzalloc(2 *
1da177e4
LT		 3152 (len +
3153 1),
3154 GFP_KERNEL);
3155 cifs_strfromUCS_le
3156 (ses->
3157 serverDomain,
e89dc920 3158 (__le16 *)
1da177e4
LT		 3159 bcc_ptr, len,
3160 nls_codepage);
3161 bcc_ptr +=
3162 2 * (len + 1);
3163 ses->
3164 serverDomain[2
3165 * len]
3166 = 0;
3167 ses->
3168 serverDomain[1
3169 +
3170 (2
3171 *
3172 len)]
3173 = 0;
3174 } /* else no more room so create dummy domain string */
3175 else
e915fc49 3176 ses->serverDomain = kzalloc(2,GFP_KERNEL);
1da177e4 3177 } else { /* no room so create dummy domain and NOS string */
e915fc49
PE		 3178 ses->serverDomain = kzalloc(2, GFP_KERNEL);
3179 ses->serverNOS = kzalloc(2, GFP_KERNEL);
1da177e4
LT		 3180 }
3181 } else { /* ASCII */
3182 len = strnlen(bcc_ptr, 1024);
3183 if (((long) bcc_ptr + len) -
3184 (long) pByteArea(smb_buffer_response)
3185 <= BCC(smb_buffer_response)) {
e915fc49 3186 ses->serverOS = kzalloc(len + 1,GFP_KERNEL);
1da177e4
LT		 3187 strncpy(ses->serverOS,bcc_ptr, len);
3188
3189 bcc_ptr += len;
3190 bcc_ptr[0] = 0; /* null terminate the string */
3191 bcc_ptr++;
3192
3193 len = strnlen(bcc_ptr, 1024);
e915fc49 3194 ses->serverNOS = kzalloc(len+1,GFP_KERNEL);
1da177e4
LT		 3195 strncpy(ses->serverNOS, bcc_ptr, len);
3196 bcc_ptr += len;
3197 bcc_ptr[0] = 0;
3198 bcc_ptr++;
3199
3200 len = strnlen(bcc_ptr, 1024);
e915fc49 3201 ses->serverDomain = kzalloc(len+1,GFP_KERNEL);
1da177e4
LT		 3202 strncpy(ses->serverDomain, bcc_ptr, len);
3203 bcc_ptr += len;
3204 bcc_ptr[0] = 0;
3205 bcc_ptr++;
3206 } else
3207 cFYI(1,
3208 ("Variable field of length %d extends beyond end of smb ",
3209 len));
3210 }
3211 } else {
3212 cERROR(1,
3213 (" Security Blob Length extends beyond end of SMB"));
3214 }
3215 } else {
3216 cERROR(1, ("No session structure passed in."));
3217 }
3218 } else {
3219 cERROR(1,
3220 (" Invalid Word count %d: ",
3221 smb_buffer_response->WordCount));
3222 rc = -EIO;
3223 }
3224
3225 if (smb_buffer)
3226 cifs_buf_release(smb_buffer);
3227
3228 return rc;
3229}
3230
3231int
3232CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
3233 const char *tree, struct cifsTconInfo *tcon,
3234 const struct nls_table *nls_codepage)
3235{
3236 struct smb_hdr *smb_buffer;
3237 struct smb_hdr *smb_buffer_response;
3238 TCONX_REQ *pSMB;
3239 TCONX_RSP *pSMBr;
3240 unsigned char *bcc_ptr;
3241 int rc = 0;
3242 int length;
3243 __u16 count;
3244
3245 if (ses == NULL)
3246 return -EIO;
3247
3248 smb_buffer = cifs_buf_get();
3249 if (smb_buffer == NULL) {
3250 return -ENOMEM;
3251 }
3252 smb_buffer_response = smb_buffer;
3253
3254 header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX,
3255 NULL /*no tid */ , 4 /*wct */ );
1982c344
SF		 3256
3257 smb_buffer->Mid = GetNextMid(ses->server);
1da177e4
LT		 3258 smb_buffer->Uid = ses->Suid;
3259 pSMB = (TCONX_REQ *) smb_buffer;
3260 pSMBr = (TCONX_RSP *) smb_buffer_response;
3261
3262 pSMB->AndXCommand = 0xFF;
3263 pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO);
1da177e4 3264 bcc_ptr = &pSMB->Password[0];
eeac8047
SF		 3265 if((ses->server->secMode) & SECMODE_USER) {
3266 pSMB->PasswordLength = cpu_to_le16(1); /* minimum */
3267 bcc_ptr++; /* skip password */
3268 } else {
3269 pSMB->PasswordLength = cpu_to_le16(CIFS_SESSION_KEY_SIZE);
3270 /* BB FIXME add code to fail this if NTLMv2 or Kerberos
3271 specified as required (when that support is added to
3272 the vfs in the future) as only NTLM or the much
3273 weaker LANMAN (which we do not send) is accepted
3274 by Samba (not sure whether other servers allow
3275 NTLMv2 password here) */
3276 SMBNTencrypt(ses->password,
3277 ses->server->cryptKey,
3278 bcc_ptr);
3279
3280 bcc_ptr += CIFS_SESSION_KEY_SIZE;
3281 *bcc_ptr = 0;
3282 bcc_ptr++; /* align */
3283 }
1da177e4
LT		 3284
3285 if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
3286 smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
3287
3288 if (ses->capabilities & CAP_STATUS32) {
3289 smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS;
3290 }
3291 if (ses->capabilities & CAP_DFS) {
3292 smb_buffer->Flags2 |= SMBFLG2_DFS;
3293 }
3294 if (ses->capabilities & CAP_UNICODE) {
3295 smb_buffer->Flags2 |= SMBFLG2_UNICODE;
3296 length =
e89dc920 3297 cifs_strtoUCS((__le16 *) bcc_ptr, tree, 100, nls_codepage);
1da177e4
LT		 3298 bcc_ptr += 2 * length; /* convert num of 16 bit words to bytes */
3299 bcc_ptr += 2; /* skip trailing null */
3300 } else { /* ASCII */
1da177e4
LT		 3301 strcpy(bcc_ptr, tree);
3302 bcc_ptr += strlen(tree) + 1;
3303 }
3304 strcpy(bcc_ptr, "?????");
3305 bcc_ptr += strlen("?????");
3306 bcc_ptr += 1;
3307 count = bcc_ptr - &pSMB->Password[0];
3308 pSMB->hdr.smb_buf_length += count;
3309 pSMB->ByteCount = cpu_to_le16(count);
3310
3311 rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, 0);
3312
3313 /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */
3314 /* above now done in SendReceive */
3315 if ((rc == 0) && (tcon != NULL)) {
3316 tcon->tidStatus = CifsGood;
3317 tcon->tid = smb_buffer_response->Tid;
3318 bcc_ptr = pByteArea(smb_buffer_response);
3319 length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2);
3320 /* skip service field (NB: this field is always ASCII) */
3321 bcc_ptr += length + 1;
3322 strncpy(tcon->treeName, tree, MAX_TREE_SIZE);
3323 if (smb_buffer->Flags2 & SMBFLG2_UNICODE) {
3324 length = UniStrnlen((wchar_t *) bcc_ptr, 512);
3325 if ((bcc_ptr + (2 * length)) -
3326 pByteArea(smb_buffer_response) <=
3327 BCC(smb_buffer_response)) {
f99d49ad 3328 kfree(tcon->nativeFileSystem);
1da177e4 3329 tcon->nativeFileSystem =
e915fc49 3330 kzalloc(length + 2, GFP_KERNEL);
1da177e4 3331 cifs_strfromUCS_le(tcon->nativeFileSystem,
e89dc920 3332 (__le16 *) bcc_ptr,
1da177e4
LT		 3333 length, nls_codepage);
3334 bcc_ptr += 2 * length;
3335 bcc_ptr[0] = 0; /* null terminate the string */
3336 bcc_ptr[1] = 0;
3337 bcc_ptr += 2;
3338 }
3339 /* else do not bother copying these informational fields */
3340 } else {
3341 length = strnlen(bcc_ptr, 1024);
3342 if ((bcc_ptr + length) -
3343 pByteArea(smb_buffer_response) <=
3344 BCC(smb_buffer_response)) {
f99d49ad 3345 kfree(tcon->nativeFileSystem);
1da177e4 3346 tcon->nativeFileSystem =
e915fc49 3347 kzalloc(length + 1, GFP_KERNEL);
1da177e4
LT		 3348 strncpy(tcon->nativeFileSystem, bcc_ptr,
3349 length);
3350 }
3351 /* else do not bother copying these informational fields */
3352 }
3353 tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport);
3354 cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags));
3355 } else if ((rc == 0) && tcon == NULL) {
3356 /* all we need to save for IPC$ connection */
3357 ses->ipc_tid = smb_buffer_response->Tid;
3358 }
3359
3360 if (smb_buffer)
3361 cifs_buf_release(smb_buffer);
3362 return rc;
3363}
3364
3365int
3366cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb)
3367{
3368 int rc = 0;
3369 int xid;
3370 struct cifsSesInfo *ses = NULL;
3371 struct task_struct *cifsd_task;
3372
3373 xid = GetXid();
3374
3375 if (cifs_sb->tcon) {
3376 ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/
3377 rc = CIFSSMBTDis(xid, cifs_sb->tcon);
3378 if (rc == -EBUSY) {
3379 FreeXid(xid);
3380 return 0;
3381 }
3382 tconInfoFree(cifs_sb->tcon);
3383 if ((ses) && (ses->server)) {
3384 /* save off task so we do not refer to ses later */
3385 cifsd_task = ses->server->tsk;
3386 cFYI(1, ("About to do SMBLogoff "));
3387 rc = CIFSSMBLogoff(xid, ses);
3388 if (rc == -EBUSY) {
3389 FreeXid(xid);
3390 return 0;
3391 } else if (rc == -ESHUTDOWN) {
3392 cFYI(1,("Waking up socket by sending it signal"));
f191401f 3393 if(cifsd_task) {
1da177e4 3394 send_sig(SIGKILL,cifsd_task,1);
f191401f
SF		 3395 wait_for_completion(&cifsd_complete);
3396 }
1da177e4
LT		 3397 rc = 0;
3398 } /* else - we have an smb session
3399 left on this socket do not kill cifsd */
3400 } else
3401 cFYI(1, ("No session or bad tcon"));
3402 }
3403
3404 cifs_sb->tcon = NULL;
041e0e3b
NA		 3405 if (ses)
3406 schedule_timeout_interruptible(msecs_to_jiffies(500));
1da177e4
LT		 3407 if (ses)
3408 sesInfoFree(ses);
3409
3410 FreeXid(xid);
3411 return rc; /* BB check if we should always return zero here */
3412}
3413
3414int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo,
3415 struct nls_table * nls_info)
3416{
3417 int rc = 0;
3418 char ntlm_session_key[CIFS_SESSION_KEY_SIZE];
3419 int ntlmv2_flag = FALSE;
ad009ac9 3420 int first_time = 0;
1da177e4
LT		 3421
3422 /* what if server changes its buffer size after dropping the session? */
3423 if(pSesInfo->server->maxBuf == 0) /* no need to send on reconnect */ {
3424 rc = CIFSSMBNegotiate(xid, pSesInfo);
3425 if(rc == -EAGAIN) /* retry only once on 1st time connection */ {
3426 rc = CIFSSMBNegotiate(xid, pSesInfo);
3427 if(rc == -EAGAIN)
3428 rc = -EHOSTDOWN;
3429 }
3430 if(rc == 0) {
3431 spin_lock(&GlobalMid_Lock);
3432 if(pSesInfo->server->tcpStatus != CifsExiting)
3433 pSesInfo->server->tcpStatus = CifsGood;
3434 else
3435 rc = -EHOSTDOWN;
3436 spin_unlock(&GlobalMid_Lock);
3437
3438 }
ad009ac9 3439 first_time = 1;
1da177e4
LT		 3440 }
3441 if (!rc) {
3442 pSesInfo->capabilities = pSesInfo->server->capabilities;
3443 if(linuxExtEnabled == 0)
3444 pSesInfo->capabilities &= (~CAP_UNIX);
ad009ac9 3445 /* pSesInfo->sequence_number = 0;*/
1da177e4
LT		 3446 cFYI(1,("Security Mode: 0x%x Capabilities: 0x%x Time Zone: %d",
3447 pSesInfo->server->secMode,
3448 pSesInfo->server->capabilities,
3449 pSesInfo->server->timeZone));
301dc3e6 3450#ifdef CONFIG_CIFS_EXPERIMENTAL
60808233
SF		 3451 if(experimEnabled > 1)
3452 rc = CIFS_SessSetup(xid, pSesInfo, CIFS_NTLM /* type */,
3453 &ntlmv2_flag, nls_info);
301dc3e6
SF		 3454 else
3455#endif
3456 if (extended_security
1da177e4
LT		 3457 && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY)
3458 && (pSesInfo->server->secType == NTLMSSP)) {
5815449d 3459 cFYI(1, ("New style sesssetup"));
1da177e4
LT		 3460 rc = CIFSSpnegoSessSetup(xid, pSesInfo,
3461 NULL /* security blob */,
3462 0 /* blob length */,
3463 nls_info);
3464 } else if (extended_security
3465 && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY)
3466 && (pSesInfo->server->secType == RawNTLMSSP)) {
5815449d 3467 cFYI(1, ("NTLMSSP sesssetup"));
1da177e4
LT		 3468 rc = CIFSNTLMSSPNegotiateSessSetup(xid,
3469 pSesInfo,
3470 &ntlmv2_flag,
3471 nls_info);
3472 if (!rc) {
3473 if(ntlmv2_flag) {
3474 char * v2_response;
3475 cFYI(1,("Can use more secure NTLM version 2 password hash"));
3476 if(CalcNTLMv2_partial_mac_key(pSesInfo,
3477 nls_info)) {
3478 rc = -ENOMEM;
3479 goto ss_err_exit;
3480 } else
3481 v2_response = kmalloc(16 + 64 /* blob */, GFP_KERNEL);
3482 if(v2_response) {
3483 CalcNTLMv2_response(pSesInfo,v2_response);
ad009ac9
SF		 3484 /* if(first_time)
3485 cifs_calculate_ntlmv2_mac_key(
3486 pSesInfo->server->mac_signing_key,
3487 response, ntlm_session_key, */
1da177e4
LT		 3488 kfree(v2_response);
3489 /* BB Put dummy sig in SessSetup PDU? */
3490 } else {
3491 rc = -ENOMEM;
3492 goto ss_err_exit;
3493 }
3494
3495 } else {
3496 SMBNTencrypt(pSesInfo->password,
3497 pSesInfo->server->cryptKey,
3498 ntlm_session_key);
3499
ad009ac9
SF		 3500 if(first_time)
3501 cifs_calculate_mac_key(
3502 pSesInfo->server->mac_signing_key,
3503 ntlm_session_key,
3504 pSesInfo->password);
1da177e4
LT		 3505 }
3506 /* for better security the weaker lanman hash not sent
3507 in AuthSessSetup so we no longer calculate it */
3508
3509 rc = CIFSNTLMSSPAuthSessSetup(xid,
3510 pSesInfo,
3511 ntlm_session_key,
3512 ntlmv2_flag,
3513 nls_info);
3514 }
3515 } else { /* old style NTLM 0.12 session setup */
3516 SMBNTencrypt(pSesInfo->password,
3517 pSesInfo->server->cryptKey,
3518 ntlm_session_key);
3519
ad009ac9
SF		 3520 if(first_time)
3521 cifs_calculate_mac_key(
3522 pSesInfo->server->mac_signing_key,
3523 ntlm_session_key, pSesInfo->password);
3524
1da177e4
LT		 3525 rc = CIFSSessSetup(xid, pSesInfo,
3526 ntlm_session_key, nls_info);
3527 }
3528 if (rc) {
3529 cERROR(1,("Send error in SessSetup = %d",rc));
3530 } else {
3531 cFYI(1,("CIFS Session Established successfully"));
3532 pSesInfo->status = CifsGood;
3533 }
3534 }
3535ss_err_exit:
3536 return rc;
3537}
3538
Linux kernel - Deliverables
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