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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
[wrt350n-kernel.git] / fs / cifs / sess.c
blobed150efbe27c93fbec1834767262453c47619e14
1 /*
2 * fs/cifs/sess.c
3 *
4 * SMB/CIFS session setup handling routines
5 *
6 * Copyright (c) International Business Machines Corp., 2006, 2007
7 * Author(s): Steve French (sfrench@us.ibm.com)
8 *
9 * This library is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU Lesser General Public License as published
11 * by the Free Software Foundation; either version 2.1 of the License, or
12 * (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
17 * the GNU Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public License
20 * along with this library; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
24 #include "cifspdu.h"
25 #include "cifsglob.h"
26 #include "cifsproto.h"
27 #include "cifs_unicode.h"
28 #include "cifs_debug.h"
29 #include "ntlmssp.h"
30 #include "nterr.h"
31 #include <linux/utsname.h>
32 #include "cifs_spnego.h"
33
34 extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8,
35 unsigned char *p24);
36
37 static __u32 cifs_ssetup_hdr(struct cifsSesInfo *ses, SESSION_SETUP_ANDX *pSMB)
38 {
39 __u32 capabilities = 0;
40
41 /* init fields common to all four types of SessSetup */
42 /* note that header is initialized to zero in header_assemble */
43 pSMB->req.AndXCommand = 0xFF;
44 pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf);
45 pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq);
46
47 /* Now no need to set SMBFLG_CASELESS or obsolete CANONICAL PATH */
48
49 /* BB verify whether signing required on neg or just on auth frame
50 (and NTLM case) */
51
52 capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS |
53 CAP_LARGE_WRITE_X | CAP_LARGE_READ_X;
54
55 if (ses->server->secMode &
56 (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
57 pSMB->req.hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
58
59 if (ses->capabilities & CAP_UNICODE) {
60 pSMB->req.hdr.Flags2 |= SMBFLG2_UNICODE;
61 capabilities |= CAP_UNICODE;
62 }
63 if (ses->capabilities & CAP_STATUS32) {
64 pSMB->req.hdr.Flags2 |= SMBFLG2_ERR_STATUS;
65 capabilities |= CAP_STATUS32;
66 }
67 if (ses->capabilities & CAP_DFS) {
68 pSMB->req.hdr.Flags2 |= SMBFLG2_DFS;
69 capabilities |= CAP_DFS;
70 }
71 if (ses->capabilities & CAP_UNIX)
72 capabilities |= CAP_UNIX;
73
74 /* BB check whether to init vcnum BB */
75 return capabilities;
76 }
77
78 static void
79 unicode_oslm_strings(char **pbcc_area, const struct nls_table *nls_cp)
80 {
81 char *bcc_ptr = *pbcc_area;
82 int bytes_ret = 0;
83
84 /* Copy OS version */
85 bytes_ret = cifs_strtoUCS((__le16 *)bcc_ptr, "Linux version ", 32,
86 nls_cp);
87 bcc_ptr += 2 * bytes_ret;
88 bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, init_utsname()->release,
89 32, nls_cp);
90 bcc_ptr += 2 * bytes_ret;
91 bcc_ptr += 2; /* trailing null */
92
93 bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
94 32, nls_cp);
95 bcc_ptr += 2 * bytes_ret;
96 bcc_ptr += 2; /* trailing null */
97
98 *pbcc_area = bcc_ptr;
99 }
100
101 static void unicode_domain_string(char **pbcc_area, struct cifsSesInfo *ses,
102 const struct nls_table *nls_cp)
103 {
104 char *bcc_ptr = *pbcc_area;
105 int bytes_ret = 0;
106
107 /* copy domain */
108 if (ses->domainName == NULL) {
109 /* Sending null domain better than using a bogus domain name (as
110 we did briefly in 2.6.18) since server will use its default */
111 *bcc_ptr = 0;
112 *(bcc_ptr+1) = 0;
113 bytes_ret = 0;
114 } else
115 bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->domainName,
116 256, nls_cp);
117 bcc_ptr += 2 * bytes_ret;
118 bcc_ptr += 2; /* account for null terminator */
119
120 *pbcc_area = bcc_ptr;
121 }
122
123
124 static void unicode_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses,
125 const struct nls_table *nls_cp)
126 {
127 char *bcc_ptr = *pbcc_area;
128 int bytes_ret = 0;
129
130 /* BB FIXME add check that strings total less
131 than 335 or will need to send them as arrays */
132
133 /* unicode strings, must be word aligned before the call */
134 /* if ((long) bcc_ptr % 2) {
135 *bcc_ptr = 0;
136 bcc_ptr++;
137 } */
138 /* copy user */
139 if (ses->userName == NULL) {
140 /* null user mount */
141 *bcc_ptr = 0;
142 *(bcc_ptr+1) = 0;
143 } else { /* 300 should be long enough for any conceivable user name */
144 bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->userName,
145 300, nls_cp);
146 }
147 bcc_ptr += 2 * bytes_ret;
148 bcc_ptr += 2; /* account for null termination */
149
150 unicode_domain_string(&bcc_ptr, ses, nls_cp);
151 unicode_oslm_strings(&bcc_ptr, nls_cp);
152
153 *pbcc_area = bcc_ptr;
154 }
155
156 static void ascii_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses,
157 const struct nls_table *nls_cp)
158 {
159 char *bcc_ptr = *pbcc_area;
160
161 /* copy user */
162 /* BB what about null user mounts - check that we do this BB */
163 /* copy user */
164 if (ses->userName == NULL) {
165 /* BB what about null user mounts - check that we do this BB */
166 } else { /* 300 should be long enough for any conceivable user name */
167 strncpy(bcc_ptr, ses->userName, 300);
168 }
169 /* BB improve check for overflow */
170 bcc_ptr += strnlen(ses->userName, 300);
171 *bcc_ptr = 0;
172 bcc_ptr++; /* account for null termination */
173
174 /* copy domain */
175
176 if (ses->domainName != NULL) {
177 strncpy(bcc_ptr, ses->domainName, 256);
178 bcc_ptr += strnlen(ses->domainName, 256);
179 } /* else we will send a null domain name
180 so the server will default to its own domain */
181 *bcc_ptr = 0;
182 bcc_ptr++;
183
184 /* BB check for overflow here */
185
186 strcpy(bcc_ptr, "Linux version ");
187 bcc_ptr += strlen("Linux version ");
188 strcpy(bcc_ptr, init_utsname()->release);
189 bcc_ptr += strlen(init_utsname()->release) + 1;
190
191 strcpy(bcc_ptr, CIFS_NETWORK_OPSYS);
192 bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1;
193
194 *pbcc_area = bcc_ptr;
195 }
196
197 static int decode_unicode_ssetup(char **pbcc_area, int bleft,
198 struct cifsSesInfo *ses,
199 const struct nls_table *nls_cp)
200 {
201 int rc = 0;
202 int words_left, len;
203 char *data = *pbcc_area;
204
205
206
207 cFYI(1, ("bleft %d", bleft));
208
209
210 /* SMB header is unaligned, so cifs servers word align start of
211 Unicode strings */
212 data++;
213 bleft--; /* Windows servers do not always double null terminate
214 their final Unicode string - in which case we
215 now will not attempt to decode the byte of junk
216 which follows it */
217
218 words_left = bleft / 2;
219
220 /* save off server operating system */
221 len = UniStrnlen((wchar_t *) data, words_left);
222
223 /* We look for obvious messed up bcc or strings in response so we do not go off
224 the end since (at least) WIN2K and Windows XP have a major bug in not null
225 terminating last Unicode string in response */
226 if (len >= words_left)
227 return rc;
228
229 kfree(ses->serverOS);
230 /* UTF-8 string will not grow more than four times as big as UCS-16 */
231 ses->serverOS = kzalloc(4 * len, GFP_KERNEL);
232 if (ses->serverOS != NULL)
233 cifs_strfromUCS_le(ses->serverOS, (__le16 *)data, len, nls_cp);
234 data += 2 * (len + 1);
235 words_left -= len + 1;
236
237 /* save off server network operating system */
238 len = UniStrnlen((wchar_t *) data, words_left);
239
240 if (len >= words_left)
241 return rc;
242
243 kfree(ses->serverNOS);
244 ses->serverNOS = kzalloc(4 * len, GFP_KERNEL); /* BB this is wrong length FIXME BB */
245 if (ses->serverNOS != NULL) {
246 cifs_strfromUCS_le(ses->serverNOS, (__le16 *)data, len,
247 nls_cp);
248 if (strncmp(ses->serverNOS, "NT LAN Manager 4", 16) == 0) {
249 cFYI(1, ("NT4 server"));
250 ses->flags |= CIFS_SES_NT4;
251 }
252 }
253 data += 2 * (len + 1);
254 words_left -= len + 1;
255
256 /* save off server domain */
257 len = UniStrnlen((wchar_t *) data, words_left);
258
259 if (len > words_left)
260 return rc;
261
262 kfree(ses->serverDomain);
263 ses->serverDomain = kzalloc(2 * (len + 1), GFP_KERNEL); /* BB FIXME wrong length */
264 if (ses->serverDomain != NULL) {
265 cifs_strfromUCS_le(ses->serverDomain, (__le16 *)data, len,
266 nls_cp);
267 ses->serverDomain[2*len] = 0;
268 ses->serverDomain[(2*len) + 1] = 0;
269 }
270 data += 2 * (len + 1);
271 words_left -= len + 1;
272
273 cFYI(1, ("words left: %d", words_left));
274
275 return rc;
276 }
277
278 static int decode_ascii_ssetup(char **pbcc_area, int bleft,
279 struct cifsSesInfo *ses,
280 const struct nls_table *nls_cp)
281 {
282 int rc = 0;
283 int len;
284 char *bcc_ptr = *pbcc_area;
285
286 cFYI(1, ("decode sessetup ascii. bleft %d", bleft));
287
288 len = strnlen(bcc_ptr, bleft);
289 if (len >= bleft)
290 return rc;
291
292 kfree(ses->serverOS);
293
294 ses->serverOS = kzalloc(len + 1, GFP_KERNEL);
295 if (ses->serverOS)
296 strncpy(ses->serverOS, bcc_ptr, len);
297 if (strncmp(ses->serverOS, "OS/2", 4) == 0) {
298 cFYI(1, ("OS/2 server"));
299 ses->flags |= CIFS_SES_OS2;
300 }
301
302 bcc_ptr += len + 1;
303 bleft -= len + 1;
304
305 len = strnlen(bcc_ptr, bleft);
306 if (len >= bleft)
307 return rc;
308
309 kfree(ses->serverNOS);
310
311 ses->serverNOS = kzalloc(len + 1, GFP_KERNEL);
312 if (ses->serverNOS)
313 strncpy(ses->serverNOS, bcc_ptr, len);
314
315 bcc_ptr += len + 1;
316 bleft -= len + 1;
317
318 len = strnlen(bcc_ptr, bleft);
319 if (len > bleft)
320 return rc;
321
322 /* No domain field in LANMAN case. Domain is
323 returned by old servers in the SMB negprot response */
324 /* BB For newer servers which do not support Unicode,
325 but thus do return domain here we could add parsing
326 for it later, but it is not very important */
327 cFYI(1, ("ascii: bytes left %d", bleft));
328
329 return rc;
330 }
331
332 int
333 CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses, int first_time,
334 const struct nls_table *nls_cp)
335 {
336 int rc = 0;
337 int wct;
338 struct smb_hdr *smb_buf;
339 char *bcc_ptr;
340 char *str_area;
341 SESSION_SETUP_ANDX *pSMB;
342 __u32 capabilities;
343 int count;
344 int resp_buf_type;
345 struct kvec iov[3];
346 enum securityEnum type;
347 __u16 action;
348 int bytes_remaining;
349 struct key *spnego_key = NULL;
350
351 if (ses == NULL)
352 return -EINVAL;
353
354 type = ses->server->secType;
355
356 cFYI(1, ("sess setup type %d", type));
357 if (type == LANMAN) {
358 #ifndef CONFIG_CIFS_WEAK_PW_HASH
359 /* LANMAN and plaintext are less secure and off by default.
360 So we make this explicitly be turned on in kconfig (in the
361 build) and turned on at runtime (changed from the default)
362 in proc/fs/cifs or via mount parm. Unfortunately this is
363 needed for old Win (e.g. Win95), some obscure NAS and OS/2 */
364 return -EOPNOTSUPP;
365 #endif
366 wct = 10; /* lanman 2 style sessionsetup */
367 } else if ((type == NTLM) || (type == NTLMv2)) {
368 /* For NTLMv2 failures eventually may need to retry NTLM */
369 wct = 13; /* old style NTLM sessionsetup */
370 } else /* same size: negotiate or auth, NTLMSSP or extended security */
371 wct = 12;
372
373 rc = small_smb_init_no_tc(SMB_COM_SESSION_SETUP_ANDX, wct, ses,
374 (void **)&smb_buf);
375 if (rc)
376 return rc;
377
378 pSMB = (SESSION_SETUP_ANDX *)smb_buf;
379
380 capabilities = cifs_ssetup_hdr(ses, pSMB);
381
382 /* we will send the SMB in three pieces:
383 a fixed length beginning part, an optional
384 SPNEGO blob (which can be zero length), and a
385 last part which will include the strings
386 and rest of bcc area. This allows us to avoid
387 a large buffer 17K allocation */
388 iov[0].iov_base = (char *)pSMB;
389 iov[0].iov_len = smb_buf->smb_buf_length + 4;
390
391 /* setting this here allows the code at the end of the function
392 to free the request buffer if there's an error */
393 resp_buf_type = CIFS_SMALL_BUFFER;
394
395 /* 2000 big enough to fit max user, domain, NOS name etc. */
396 str_area = kmalloc(2000, GFP_KERNEL);
397 if (str_area == NULL) {
398 rc = -ENOMEM;
399 goto ssetup_exit;
400 }
401 bcc_ptr = str_area;
402
403 ses->flags &= ~CIFS_SES_LANMAN;
404
405 iov[1].iov_base = NULL;
406 iov[1].iov_len = 0;
407
408 if (type == LANMAN) {
409 #ifdef CONFIG_CIFS_WEAK_PW_HASH
410 char lnm_session_key[CIFS_SESS_KEY_SIZE];
411
412 /* no capabilities flags in old lanman negotiation */
413
414 pSMB->old_req.PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE);
415 /* BB calculate hash with password */
416 /* and copy into bcc */
417
418 calc_lanman_hash(ses, lnm_session_key);
419 ses->flags |= CIFS_SES_LANMAN;
420 memcpy(bcc_ptr, (char *)lnm_session_key, CIFS_SESS_KEY_SIZE);
421 bcc_ptr += CIFS_SESS_KEY_SIZE;
422
423 /* can not sign if LANMAN negotiated so no need
424 to calculate signing key? but what if server
425 changed to do higher than lanman dialect and
426 we reconnected would we ever calc signing_key? */
427
428 cFYI(1, ("Negotiating LANMAN setting up strings"));
429 /* Unicode not allowed for LANMAN dialects */
430 ascii_ssetup_strings(&bcc_ptr, ses, nls_cp);
431 #endif
432 } else if (type == NTLM) {
433 char ntlm_session_key[CIFS_SESS_KEY_SIZE];
434
435 pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities);
436 pSMB->req_no_secext.CaseInsensitivePasswordLength =
437 cpu_to_le16(CIFS_SESS_KEY_SIZE);
438 pSMB->req_no_secext.CaseSensitivePasswordLength =
439 cpu_to_le16(CIFS_SESS_KEY_SIZE);
440
441 /* calculate session key */
442 SMBNTencrypt(ses->password, ses->server->cryptKey,
443 ntlm_session_key);
444
445 if (first_time) /* should this be moved into common code
446 with similar ntlmv2 path? */
447 cifs_calculate_mac_key(&ses->server->mac_signing_key,
448 ntlm_session_key, ses->password);
449 /* copy session key */
450
451 memcpy(bcc_ptr, (char *)ntlm_session_key, CIFS_SESS_KEY_SIZE);
452 bcc_ptr += CIFS_SESS_KEY_SIZE;
453 memcpy(bcc_ptr, (char *)ntlm_session_key, CIFS_SESS_KEY_SIZE);
454 bcc_ptr += CIFS_SESS_KEY_SIZE;
455 if (ses->capabilities & CAP_UNICODE) {
456 /* unicode strings must be word aligned */
457 if (iov[0].iov_len % 2) {
458 *bcc_ptr = 0;
459 bcc_ptr++;
460 }
461 unicode_ssetup_strings(&bcc_ptr, ses, nls_cp);
462 } else
463 ascii_ssetup_strings(&bcc_ptr, ses, nls_cp);
464 } else if (type == NTLMv2) {
465 char *v2_sess_key =
466 kmalloc(sizeof(struct ntlmv2_resp), GFP_KERNEL);
467
468 /* BB FIXME change all users of v2_sess_key to
469 struct ntlmv2_resp */
470
471 if (v2_sess_key == NULL) {
472 rc = -ENOMEM;
473 goto ssetup_exit;
474 }
475
476 pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities);
477
478 /* LM2 password would be here if we supported it */
479 pSMB->req_no_secext.CaseInsensitivePasswordLength = 0;
480 /* cpu_to_le16(LM2_SESS_KEY_SIZE); */
481
482 pSMB->req_no_secext.CaseSensitivePasswordLength =
483 cpu_to_le16(sizeof(struct ntlmv2_resp));
484
485 /* calculate session key */
486 setup_ntlmv2_rsp(ses, v2_sess_key, nls_cp);
487 if (first_time) /* should this be moved into common code
488 with similar ntlmv2 path? */
489 /* cifs_calculate_ntlmv2_mac_key(ses->server->mac_signing_key,
490 response BB FIXME, v2_sess_key); */
491
492 /* copy session key */
493
494 /* memcpy(bcc_ptr, (char *)ntlm_session_key,LM2_SESS_KEY_SIZE);
495 bcc_ptr += LM2_SESS_KEY_SIZE; */
496 memcpy(bcc_ptr, (char *)v2_sess_key,
497 sizeof(struct ntlmv2_resp));
498 bcc_ptr += sizeof(struct ntlmv2_resp);
499 kfree(v2_sess_key);
500 if (ses->capabilities & CAP_UNICODE) {
501 if (iov[0].iov_len % 2) {
502 *bcc_ptr = 0;
503 bcc_ptr++;
504 }
505 unicode_ssetup_strings(&bcc_ptr, ses, nls_cp);
506 } else
507 ascii_ssetup_strings(&bcc_ptr, ses, nls_cp);
508 } else if (type == Kerberos) {
509 #ifdef CONFIG_CIFS_UPCALL
510 struct cifs_spnego_msg *msg;
511 spnego_key = cifs_get_spnego_key(ses);
512 if (IS_ERR(spnego_key)) {
513 rc = PTR_ERR(spnego_key);
514 spnego_key = NULL;
515 goto ssetup_exit;
516 }
517
518 msg = spnego_key->payload.data;
519 /* bail out if key is too long */
520 if (msg->sesskey_len >
521 sizeof(ses->server->mac_signing_key.data.krb5)) {
522 cERROR(1, ("Kerberos signing key too long (%u bytes)",
523 msg->sesskey_len));
524 rc = -EOVERFLOW;
525 goto ssetup_exit;
526 }
527 if (first_time) {
528 ses->server->mac_signing_key.len = msg->sesskey_len;
529 memcpy(ses->server->mac_signing_key.data.krb5,
530 msg->data, msg->sesskey_len);
531 }
532 pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
533 capabilities |= CAP_EXTENDED_SECURITY;
534 pSMB->req.Capabilities = cpu_to_le32(capabilities);
535 iov[1].iov_base = msg->data + msg->sesskey_len;
536 iov[1].iov_len = msg->secblob_len;
537 pSMB->req.SecurityBlobLength = cpu_to_le16(iov[1].iov_len);
538
539 if (ses->capabilities & CAP_UNICODE) {
540 /* unicode strings must be word aligned */
541 if ((iov[0].iov_len + iov[1].iov_len) % 2) {
542 *bcc_ptr = 0;
543 bcc_ptr++;
544 }
545 unicode_oslm_strings(&bcc_ptr, nls_cp);
546 unicode_domain_string(&bcc_ptr, ses, nls_cp);
547 } else
548 /* BB: is this right? */
549 ascii_ssetup_strings(&bcc_ptr, ses, nls_cp);
550 #else /* ! CONFIG_CIFS_UPCALL */
551 cERROR(1, ("Kerberos negotiated but upcall support disabled!"));
552 rc = -ENOSYS;
553 goto ssetup_exit;
554 #endif /* CONFIG_CIFS_UPCALL */
555 } else {
556 cERROR(1, ("secType %d not supported!", type));
557 rc = -ENOSYS;
558 goto ssetup_exit;
559 }
560
561 iov[2].iov_base = str_area;
562 iov[2].iov_len = (long) bcc_ptr - (long) str_area;
563
564 count = iov[1].iov_len + iov[2].iov_len;
565 smb_buf->smb_buf_length += count;
566
567 BCC_LE(smb_buf) = cpu_to_le16(count);
568
569 rc = SendReceive2(xid, ses, iov, 3 /* num_iovecs */, &resp_buf_type,
570 CIFS_STD_OP /* not long */ | CIFS_LOG_ERROR);
571 /* SMB request buf freed in SendReceive2 */
572
573 cFYI(1, ("ssetup rc from sendrecv2 is %d", rc));
574 if (rc)
575 goto ssetup_exit;
576
577 pSMB = (SESSION_SETUP_ANDX *)iov[0].iov_base;
578 smb_buf = (struct smb_hdr *)iov[0].iov_base;
579
580 if ((smb_buf->WordCount != 3) && (smb_buf->WordCount != 4)) {
581 rc = -EIO;
582 cERROR(1, ("bad word count %d", smb_buf->WordCount));
583 goto ssetup_exit;
584 }
585 action = le16_to_cpu(pSMB->resp.Action);
586 if (action & GUEST_LOGIN)
587 cFYI(1, ("Guest login")); /* BB mark SesInfo struct? */
588 ses->Suid = smb_buf->Uid; /* UID left in wire format (le) */
589 cFYI(1, ("UID = %d ", ses->Suid));
590 /* response can have either 3 or 4 word count - Samba sends 3 */
591 /* and lanman response is 3 */
592 bytes_remaining = BCC(smb_buf);
593 bcc_ptr = pByteArea(smb_buf);
594
595 if (smb_buf->WordCount == 4) {
596 __u16 blob_len;
597 blob_len = le16_to_cpu(pSMB->resp.SecurityBlobLength);
598 bcc_ptr += blob_len;
599 if (blob_len > bytes_remaining) {
600 cERROR(1, ("bad security blob length %d", blob_len));
601 rc = -EINVAL;
602 goto ssetup_exit;
603 }
604 bytes_remaining -= blob_len;
605 }
606
607 /* BB check if Unicode and decode strings */
608 if (smb_buf->Flags2 & SMBFLG2_UNICODE)
609 rc = decode_unicode_ssetup(&bcc_ptr, bytes_remaining,
610 ses, nls_cp);
611 else
612 rc = decode_ascii_ssetup(&bcc_ptr, bytes_remaining,
613 ses, nls_cp);
614
615 ssetup_exit:
616 if (spnego_key)
617 key_put(spnego_key);
618 kfree(str_area);
619 if (resp_buf_type == CIFS_SMALL_BUFFER) {
620 cFYI(1, ("ssetup freeing small buf %p", iov[0].iov_base));
621 cifs_small_buf_release(iov[0].iov_base);
622 } else if (resp_buf_type == CIFS_LARGE_BUFFER)
623 cifs_buf_release(iov[0].iov_base);
624
625 return rc;
626 }
WRT350N Kernel Patches