Commit | Line | Data |
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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 |
50 | static DECLARE_COMPLETION(cifsd_complete); |
51 | ||
1da177e4 LT |
52 | extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, |
53 | unsigned char *p24); | |
54 | ||
55 | extern mempool_t *cifs_req_poolp; | |
56 | ||
57 | struct smb_vol { | |
58 | char *username; | |
59 | char *password; | |
60 | char *domainname; | |
61 | char *UNC; | |
62 | char *UNCip; | |
63 | char *in6_addr; /* ipv6 address as human readable form of in6_addr */ | |
64 | char *iocharset; /* local code page for mapping to and from Unicode */ | |
65 | char source_rfc1001_name[16]; /* netbios name of client */ | |
a10faeb2 | 66 | char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */ |
1da177e4 LT |
67 | uid_t linux_uid; |
68 | gid_t linux_gid; | |
69 | mode_t file_mode; | |
70 | mode_t dir_mode; | |
189acaae | 71 | unsigned secFlg; |
1da177e4 LT |
72 | unsigned rw:1; |
73 | unsigned retry:1; | |
74 | unsigned intr:1; | |
75 | unsigned setuids:1; | |
76 | unsigned noperm:1; | |
77 | unsigned no_psx_acl:1; /* set if posix acl support should be disabled */ | |
0a4b92c0 | 78 | unsigned cifs_acl:1; |
1da177e4 LT |
79 | unsigned no_xattr:1; /* set if xattr (EA) support should be disabled*/ |
80 | unsigned server_ino:1; /* use inode numbers from server ie UniqueId */ | |
81 | unsigned direct_io:1; | |
6a0b4824 | 82 | unsigned remap:1; /* set to remap seven reserved chars in filenames */ |
ac67055e | 83 | unsigned posix_paths:1; /* unset to not ask for posix pathnames. */ |
d7245c2c | 84 | unsigned sfu_emul:1; |
bf820679 | 85 | unsigned nullauth:1; /* attempt to authenticate with null user */ |
c46fa8ac SF |
86 | unsigned nocase; /* request case insensitive filenames */ |
87 | unsigned nobrl; /* disable sending byte range locks to srv */ | |
1da177e4 LT |
88 | unsigned int rsize; |
89 | unsigned int wsize; | |
90 | unsigned int sockopt; | |
91 | unsigned short int port; | |
92 | }; | |
93 | ||
94 | static int ipv4_connect(struct sockaddr_in *psin_server, | |
95 | struct socket **csocket, | |
a10faeb2 SF |
96 | char * netb_name, |
97 | char * server_netb_name); | |
1da177e4 LT |
98 | static int ipv6_connect(struct sockaddr_in6 *psin_server, |
99 | struct socket **csocket); | |
100 | ||
101 | ||
102 | /* | |
103 | * cifs tcp session reconnection | |
104 | * | |
105 | * mark tcp session as reconnecting so temporarily locked | |
106 | * mark all smb sessions as reconnecting for tcp session | |
107 | * reconnect tcp session | |
108 | * wake up waiters on reconnection? - (not needed currently) | |
109 | */ | |
110 | ||
111 | int | |
112 | cifs_reconnect(struct TCP_Server_Info *server) | |
113 | { | |
114 | int rc = 0; | |
115 | struct list_head *tmp; | |
116 | struct cifsSesInfo *ses; | |
117 | struct cifsTconInfo *tcon; | |
118 | struct mid_q_entry * mid_entry; | |
119 | ||
120 | spin_lock(&GlobalMid_Lock); | |
121 | if(server->tcpStatus == CifsExiting) { | |
122 | /* the demux thread will exit normally | |
123 | next time through the loop */ | |
124 | spin_unlock(&GlobalMid_Lock); | |
125 | return rc; | |
126 | } else | |
127 | server->tcpStatus = CifsNeedReconnect; | |
128 | spin_unlock(&GlobalMid_Lock); | |
129 | server->maxBuf = 0; | |
130 | ||
e4eb295d | 131 | cFYI(1, ("Reconnecting tcp session")); |
1da177e4 LT |
132 | |
133 | /* before reconnecting the tcp session, mark the smb session (uid) | |
134 | and the tid bad so they are not used until reconnected */ | |
135 | read_lock(&GlobalSMBSeslock); | |
136 | list_for_each(tmp, &GlobalSMBSessionList) { | |
137 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
138 | if (ses->server) { | |
139 | if (ses->server == server) { | |
140 | ses->status = CifsNeedReconnect; | |
141 | ses->ipc_tid = 0; | |
142 | } | |
143 | } | |
144 | /* else tcp and smb sessions need reconnection */ | |
145 | } | |
146 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
147 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); | |
148 | if((tcon) && (tcon->ses) && (tcon->ses->server == server)) { | |
149 | tcon->tidStatus = CifsNeedReconnect; | |
150 | } | |
151 | } | |
152 | read_unlock(&GlobalSMBSeslock); | |
153 | /* do not want to be sending data on a socket we are freeing */ | |
154 | down(&server->tcpSem); | |
155 | if(server->ssocket) { | |
156 | cFYI(1,("State: 0x%x Flags: 0x%lx", server->ssocket->state, | |
157 | server->ssocket->flags)); | |
158 | server->ssocket->ops->shutdown(server->ssocket,SEND_SHUTDOWN); | |
159 | cFYI(1,("Post shutdown state: 0x%x Flags: 0x%lx", server->ssocket->state, | |
160 | server->ssocket->flags)); | |
161 | sock_release(server->ssocket); | |
162 | server->ssocket = NULL; | |
163 | } | |
164 | ||
165 | spin_lock(&GlobalMid_Lock); | |
166 | list_for_each(tmp, &server->pending_mid_q) { | |
167 | mid_entry = list_entry(tmp, struct | |
168 | mid_q_entry, | |
169 | qhead); | |
170 | if(mid_entry) { | |
171 | if(mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
09d1db5c SF |
172 | /* Mark other intransit requests as needing |
173 | retry so we do not immediately mark the | |
174 | session bad again (ie after we reconnect | |
175 | below) as they timeout too */ | |
1da177e4 LT |
176 | mid_entry->midState = MID_RETRY_NEEDED; |
177 | } | |
178 | } | |
179 | } | |
180 | spin_unlock(&GlobalMid_Lock); | |
181 | up(&server->tcpSem); | |
182 | ||
183 | while ((server->tcpStatus != CifsExiting) && (server->tcpStatus != CifsGood)) | |
184 | { | |
6c3d8909 | 185 | try_to_freeze(); |
1da177e4 LT |
186 | if(server->protocolType == IPV6) { |
187 | rc = ipv6_connect(&server->addr.sockAddr6,&server->ssocket); | |
188 | } else { | |
189 | rc = ipv4_connect(&server->addr.sockAddr, | |
190 | &server->ssocket, | |
a10faeb2 SF |
191 | server->workstation_RFC1001_name, |
192 | server->server_RFC1001_name); | |
1da177e4 LT |
193 | } |
194 | if(rc) { | |
b387eaeb | 195 | cFYI(1,("reconnect error %d",rc)); |
0cb766ae | 196 | msleep(3000); |
1da177e4 LT |
197 | } else { |
198 | atomic_inc(&tcpSesReconnectCount); | |
199 | spin_lock(&GlobalMid_Lock); | |
200 | if(server->tcpStatus != CifsExiting) | |
201 | server->tcpStatus = CifsGood; | |
ad009ac9 SF |
202 | server->sequence_number = 0; |
203 | spin_unlock(&GlobalMid_Lock); | |
1da177e4 LT |
204 | /* atomic_set(&server->inFlight,0);*/ |
205 | wake_up(&server->response_q); | |
206 | } | |
207 | } | |
208 | return rc; | |
209 | } | |
210 | ||
e4eb295d SF |
211 | /* |
212 | return codes: | |
213 | 0 not a transact2, or all data present | |
214 | >0 transact2 with that much data missing | |
215 | -EINVAL = invalid transact2 | |
216 | ||
217 | */ | |
218 | static int check2ndT2(struct smb_hdr * pSMB, unsigned int maxBufSize) | |
219 | { | |
220 | struct smb_t2_rsp * pSMBt; | |
221 | int total_data_size; | |
222 | int data_in_this_rsp; | |
223 | int remaining; | |
224 | ||
225 | if(pSMB->Command != SMB_COM_TRANSACTION2) | |
226 | return 0; | |
227 | ||
228 | /* check for plausible wct, bcc and t2 data and parm sizes */ | |
229 | /* check for parm and data offset going beyond end of smb */ | |
230 | if(pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
231 | cFYI(1,("invalid transact2 word count")); | |
232 | return -EINVAL; | |
233 | } | |
234 | ||
235 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
236 | ||
237 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
238 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
239 | ||
240 | remaining = total_data_size - data_in_this_rsp; | |
241 | ||
242 | if(remaining == 0) | |
243 | return 0; | |
244 | else if(remaining < 0) { | |
245 | cFYI(1,("total data %d smaller than data in frame %d", | |
246 | total_data_size, data_in_this_rsp)); | |
247 | return -EINVAL; | |
248 | } else { | |
249 | cFYI(1,("missing %d bytes from transact2, check next response", | |
250 | remaining)); | |
251 | if(total_data_size > maxBufSize) { | |
252 | cERROR(1,("TotalDataSize %d is over maximum buffer %d", | |
253 | total_data_size,maxBufSize)); | |
254 | return -EINVAL; | |
255 | } | |
256 | return remaining; | |
257 | } | |
258 | } | |
259 | ||
260 | static int coalesce_t2(struct smb_hdr * psecond, struct smb_hdr *pTargetSMB) | |
261 | { | |
262 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
263 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
264 | int total_data_size; | |
265 | int total_in_buf; | |
266 | int remaining; | |
267 | int total_in_buf2; | |
268 | char * data_area_of_target; | |
269 | char * data_area_of_buf2; | |
270 | __u16 byte_count; | |
271 | ||
272 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
273 | ||
274 | if(total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { | |
275 | cFYI(1,("total data sizes of primary and secondary t2 differ")); | |
276 | } | |
277 | ||
278 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
279 | ||
280 | remaining = total_data_size - total_in_buf; | |
281 | ||
282 | if(remaining < 0) | |
283 | return -EINVAL; | |
284 | ||
285 | if(remaining == 0) /* nothing to do, ignore */ | |
286 | return 0; | |
287 | ||
288 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); | |
289 | if(remaining < total_in_buf2) { | |
290 | cFYI(1,("transact2 2nd response contains too much data")); | |
291 | } | |
292 | ||
293 | /* find end of first SMB data area */ | |
294 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + | |
295 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); | |
296 | /* validate target area */ | |
297 | ||
298 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
299 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); | |
300 | ||
301 | data_area_of_target += total_in_buf; | |
302 | ||
303 | /* copy second buffer into end of first buffer */ | |
304 | memcpy(data_area_of_target,data_area_of_buf2,total_in_buf2); | |
305 | total_in_buf += total_in_buf2; | |
306 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
307 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
308 | byte_count += total_in_buf2; | |
309 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
310 | ||
70ca734a | 311 | byte_count = pTargetSMB->smb_buf_length; |
e4eb295d SF |
312 | byte_count += total_in_buf2; |
313 | ||
314 | /* BB also add check that we are not beyond maximum buffer size */ | |
315 | ||
70ca734a | 316 | pTargetSMB->smb_buf_length = byte_count; |
e4eb295d SF |
317 | |
318 | if(remaining == total_in_buf2) { | |
319 | cFYI(1,("found the last secondary response")); | |
320 | return 0; /* we are done */ | |
321 | } else /* more responses to go */ | |
322 | return 1; | |
323 | ||
324 | } | |
325 | ||
1da177e4 LT |
326 | static int |
327 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
328 | { | |
329 | int length; | |
330 | unsigned int pdu_length, total_read; | |
331 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
332 | struct smb_hdr *bigbuf = NULL; |
333 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
334 | struct msghdr smb_msg; |
335 | struct kvec iov; | |
336 | struct socket *csocket = server->ssocket; | |
337 | struct list_head *tmp; | |
338 | struct cifsSesInfo *ses; | |
339 | struct task_struct *task_to_wake = NULL; | |
340 | struct mid_q_entry *mid_entry; | |
70ca734a | 341 | char temp; |
b8643e1b | 342 | int isLargeBuf = FALSE; |
e4eb295d SF |
343 | int isMultiRsp; |
344 | int reconnect; | |
1da177e4 LT |
345 | |
346 | daemonize("cifsd"); | |
347 | allow_signal(SIGKILL); | |
348 | current->flags |= PF_MEMALLOC; | |
349 | server->tsk = current; /* save process info to wake at shutdown */ | |
350 | cFYI(1, ("Demultiplex PID: %d", current->pid)); | |
351 | write_lock(&GlobalSMBSeslock); | |
352 | atomic_inc(&tcpSesAllocCount); | |
353 | length = tcpSesAllocCount.counter; | |
354 | write_unlock(&GlobalSMBSeslock); | |
f191401f | 355 | complete(&cifsd_complete); |
1da177e4 LT |
356 | if(length > 1) { |
357 | mempool_resize(cifs_req_poolp, | |
358 | length + cifs_min_rcv, | |
359 | GFP_KERNEL); | |
360 | } | |
361 | ||
362 | while (server->tcpStatus != CifsExiting) { | |
ede1327e SF |
363 | if (try_to_freeze()) |
364 | continue; | |
b8643e1b SF |
365 | if (bigbuf == NULL) { |
366 | bigbuf = cifs_buf_get(); | |
0fd1ffe0 PM |
367 | if (!bigbuf) { |
368 | cERROR(1, ("No memory for large SMB response")); | |
b8643e1b SF |
369 | msleep(3000); |
370 | /* retry will check if exiting */ | |
371 | continue; | |
372 | } | |
0fd1ffe0 PM |
373 | } else if (isLargeBuf) { |
374 | /* we are reusing a dirty large buf, clear its start */ | |
b8643e1b | 375 | memset(bigbuf, 0, sizeof (struct smb_hdr)); |
1da177e4 | 376 | } |
b8643e1b SF |
377 | |
378 | if (smallbuf == NULL) { | |
379 | smallbuf = cifs_small_buf_get(); | |
0fd1ffe0 PM |
380 | if (!smallbuf) { |
381 | cERROR(1, ("No memory for SMB response")); | |
b8643e1b SF |
382 | msleep(1000); |
383 | /* retry will check if exiting */ | |
384 | continue; | |
385 | } | |
386 | /* beginning of smb buffer is cleared in our buf_get */ | |
387 | } else /* if existing small buf clear beginning */ | |
388 | memset(smallbuf, 0, sizeof (struct smb_hdr)); | |
389 | ||
390 | isLargeBuf = FALSE; | |
e4eb295d | 391 | isMultiRsp = FALSE; |
b8643e1b | 392 | smb_buffer = smallbuf; |
1da177e4 LT |
393 | iov.iov_base = smb_buffer; |
394 | iov.iov_len = 4; | |
395 | smb_msg.msg_control = NULL; | |
396 | smb_msg.msg_controllen = 0; | |
397 | length = | |
398 | kernel_recvmsg(csocket, &smb_msg, | |
399 | &iov, 1, 4, 0 /* BB see socket.h flags */); | |
400 | ||
0fd1ffe0 | 401 | if (server->tcpStatus == CifsExiting) { |
1da177e4 LT |
402 | break; |
403 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
0fd1ffe0 | 404 | cFYI(1, ("Reconnect after server stopped responding")); |
1da177e4 | 405 | cifs_reconnect(server); |
0fd1ffe0 | 406 | cFYI(1, ("call to reconnect done")); |
1da177e4 LT |
407 | csocket = server->ssocket; |
408 | continue; | |
409 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 410 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
411 | allowing socket to clear and app threads to set |
412 | tcpStatus CifsNeedReconnect if server hung */ | |
413 | continue; | |
414 | } else if (length <= 0) { | |
0fd1ffe0 PM |
415 | if (server->tcpStatus == CifsNew) { |
416 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
417 | /* some servers kill the TCP session rather than |
418 | returning an SMB negprot error, in which | |
419 | case reconnecting here is not going to help, | |
420 | and so simply return error to mount */ | |
1da177e4 LT |
421 | break; |
422 | } | |
0fd1ffe0 | 423 | if (!try_to_freeze() && (length == -EINTR)) { |
1da177e4 LT |
424 | cFYI(1,("cifsd thread killed")); |
425 | break; | |
426 | } | |
57337e42 SF |
427 | cFYI(1,("Reconnect after unexpected peek error %d", |
428 | length)); | |
1da177e4 LT |
429 | cifs_reconnect(server); |
430 | csocket = server->ssocket; | |
431 | wake_up(&server->response_q); | |
432 | continue; | |
46810cbf SF |
433 | } else if (length < 4) { |
434 | cFYI(1, | |
57337e42 | 435 | ("Frame under four bytes received (%d bytes long)", |
46810cbf SF |
436 | length)); |
437 | cifs_reconnect(server); | |
438 | csocket = server->ssocket; | |
439 | wake_up(&server->response_q); | |
440 | continue; | |
441 | } | |
1da177e4 | 442 | |
70ca734a SF |
443 | /* The right amount was read from socket - 4 bytes */ |
444 | /* so we can now interpret the length field */ | |
46810cbf | 445 | |
70ca734a SF |
446 | /* the first byte big endian of the length field, |
447 | is actually not part of the length but the type | |
448 | with the most common, zero, as regular data */ | |
449 | temp = *((char *) smb_buffer); | |
46810cbf | 450 | |
70ca734a SF |
451 | /* Note that FC 1001 length is big endian on the wire, |
452 | but we convert it here so it is always manipulated | |
453 | as host byte order */ | |
46810cbf | 454 | pdu_length = ntohl(smb_buffer->smb_buf_length); |
70ca734a SF |
455 | smb_buffer->smb_buf_length = pdu_length; |
456 | ||
457 | cFYI(1,("rfc1002 length 0x%x)", pdu_length+4)); | |
46810cbf | 458 | |
70ca734a | 459 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
e4eb295d | 460 | continue; |
70ca734a | 461 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
e4eb295d SF |
462 | cFYI(1,("Good RFC 1002 session rsp")); |
463 | continue; | |
70ca734a | 464 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
46810cbf SF |
465 | /* we get this from Windows 98 instead of |
466 | an error on SMB negprot response */ | |
e4eb295d | 467 | cFYI(1,("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 468 | pdu_length)); |
46810cbf SF |
469 | if(server->tcpStatus == CifsNew) { |
470 | /* if nack on negprot (rather than | |
471 | ret of smb negprot error) reconnecting | |
472 | not going to help, ret error to mount */ | |
473 | break; | |
474 | } else { | |
475 | /* give server a second to | |
476 | clean up before reconnect attempt */ | |
477 | msleep(1000); | |
478 | /* always try 445 first on reconnect | |
479 | since we get NACK on some if we ever | |
480 | connected to port 139 (the NACK is | |
481 | since we do not begin with RFC1001 | |
482 | session initialize frame) */ | |
483 | server->addr.sockAddr.sin_port = | |
484 | htons(CIFS_PORT); | |
1da177e4 LT |
485 | cifs_reconnect(server); |
486 | csocket = server->ssocket; | |
46810cbf | 487 | wake_up(&server->response_q); |
1da177e4 | 488 | continue; |
46810cbf | 489 | } |
70ca734a | 490 | } else if (temp != (char) 0) { |
46810cbf | 491 | cERROR(1,("Unknown RFC 1002 frame")); |
70ca734a SF |
492 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
493 | length); | |
46810cbf SF |
494 | cifs_reconnect(server); |
495 | csocket = server->ssocket; | |
496 | continue; | |
e4eb295d SF |
497 | } |
498 | ||
499 | /* else we have an SMB response */ | |
500 | if((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || | |
46810cbf | 501 | (pdu_length < sizeof (struct smb_hdr) - 1 - 4)) { |
e4eb295d | 502 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 503 | length, pdu_length+4)); |
e4eb295d SF |
504 | cifs_reconnect(server); |
505 | csocket = server->ssocket; | |
506 | wake_up(&server->response_q); | |
507 | continue; | |
508 | } | |
509 | ||
510 | /* else length ok */ | |
511 | reconnect = 0; | |
512 | ||
ec637e3f | 513 | if(pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
e4eb295d SF |
514 | isLargeBuf = TRUE; |
515 | memcpy(bigbuf, smallbuf, 4); | |
516 | smb_buffer = bigbuf; | |
517 | } | |
518 | length = 0; | |
519 | iov.iov_base = 4 + (char *)smb_buffer; | |
520 | iov.iov_len = pdu_length; | |
521 | for (total_read = 0; total_read < pdu_length; | |
522 | total_read += length) { | |
523 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
524 | pdu_length - total_read, 0); | |
525 | if((server->tcpStatus == CifsExiting) || | |
526 | (length == -EINTR)) { | |
527 | /* then will exit */ | |
528 | reconnect = 2; | |
529 | break; | |
530 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
531 | cifs_reconnect(server); |
532 | csocket = server->ssocket; | |
e4eb295d SF |
533 | /* Reconnect wakes up rspns q */ |
534 | /* Now we will reread sock */ | |
535 | reconnect = 1; | |
536 | break; | |
537 | } else if ((length == -ERESTARTSYS) || | |
538 | (length == -EAGAIN)) { | |
539 | msleep(1); /* minimum sleep to prevent looping, | |
540 | allowing socket to clear and app | |
541 | threads to set tcpStatus | |
542 | CifsNeedReconnect if server hung*/ | |
46810cbf | 543 | continue; |
e4eb295d SF |
544 | } else if (length <= 0) { |
545 | cERROR(1,("Received no data, expecting %d", | |
546 | pdu_length - total_read)); | |
547 | cifs_reconnect(server); | |
548 | csocket = server->ssocket; | |
549 | reconnect = 1; | |
550 | break; | |
46810cbf | 551 | } |
e4eb295d SF |
552 | } |
553 | if(reconnect == 2) | |
554 | break; | |
555 | else if(reconnect == 1) | |
556 | continue; | |
1da177e4 | 557 | |
e4eb295d SF |
558 | length += 4; /* account for rfc1002 hdr */ |
559 | ||
09d1db5c | 560 | |
e4eb295d | 561 | dump_smb(smb_buffer, length); |
184ed211 | 562 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 563 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
564 | continue; |
565 | } | |
1da177e4 | 566 | |
e4eb295d SF |
567 | |
568 | task_to_wake = NULL; | |
569 | spin_lock(&GlobalMid_Lock); | |
570 | list_for_each(tmp, &server->pending_mid_q) { | |
571 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
572 | ||
573 | if ((mid_entry->mid == smb_buffer->Mid) && | |
574 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && | |
575 | (mid_entry->command == smb_buffer->Command)) { | |
e4eb295d SF |
576 | if(check2ndT2(smb_buffer,server->maxBuf) > 0) { |
577 | /* We have a multipart transact2 resp */ | |
cd63499c | 578 | isMultiRsp = TRUE; |
e4eb295d SF |
579 | if(mid_entry->resp_buf) { |
580 | /* merge response - fix up 1st*/ | |
581 | if(coalesce_t2(smb_buffer, | |
582 | mid_entry->resp_buf)) { | |
3979877e | 583 | mid_entry->multiRsp = 1; |
e4eb295d SF |
584 | break; |
585 | } else { | |
586 | /* all parts received */ | |
3979877e | 587 | mid_entry->multiEnd = 1; |
e4eb295d SF |
588 | goto multi_t2_fnd; |
589 | } | |
590 | } else { | |
591 | if(!isLargeBuf) { | |
592 | cERROR(1,("1st trans2 resp needs bigbuf")); | |
593 | /* BB maybe we can fix this up, switch | |
594 | to already allocated large buffer? */ | |
595 | } else { | |
cd63499c | 596 | /* Have first buffer */ |
e4eb295d SF |
597 | mid_entry->resp_buf = |
598 | smb_buffer; | |
599 | mid_entry->largeBuf = 1; | |
e4eb295d SF |
600 | bigbuf = NULL; |
601 | } | |
602 | } | |
603 | break; | |
604 | } | |
605 | mid_entry->resp_buf = smb_buffer; | |
46810cbf | 606 | if(isLargeBuf) |
e4eb295d | 607 | mid_entry->largeBuf = 1; |
46810cbf | 608 | else |
e4eb295d SF |
609 | mid_entry->largeBuf = 0; |
610 | multi_t2_fnd: | |
611 | task_to_wake = mid_entry->tsk; | |
612 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
613 | #ifdef CONFIG_CIFS_STATS2 |
614 | mid_entry->when_received = jiffies; | |
615 | #endif | |
3a5ff61c SF |
616 | /* so we do not time out requests to server |
617 | which is still responding (since server could | |
618 | be busy but not dead) */ | |
619 | server->lstrp = jiffies; | |
e4eb295d | 620 | break; |
46810cbf | 621 | } |
1da177e4 | 622 | } |
e4eb295d SF |
623 | spin_unlock(&GlobalMid_Lock); |
624 | if (task_to_wake) { | |
cd63499c SF |
625 | /* Was previous buf put in mpx struct for multi-rsp? */ |
626 | if(!isMultiRsp) { | |
627 | /* smb buffer will be freed by user thread */ | |
628 | if(isLargeBuf) { | |
629 | bigbuf = NULL; | |
630 | } else | |
631 | smallbuf = NULL; | |
632 | } | |
e4eb295d | 633 | wake_up_process(task_to_wake); |
d7c8c94d | 634 | } else if ((is_valid_oplock_break(smb_buffer, server) == FALSE) |
e4eb295d | 635 | && (isMultiRsp == FALSE)) { |
3979877e | 636 | cERROR(1, ("No task to wake, unknown frame rcvd! NumMids %d", midCount.counter)); |
70ca734a SF |
637 | cifs_dump_mem("Received Data is: ",(char *)smb_buffer, |
638 | sizeof(struct smb_hdr)); | |
3979877e SF |
639 | #ifdef CONFIG_CIFS_DEBUG2 |
640 | cifs_dump_detail(smb_buffer); | |
641 | cifs_dump_mids(server); | |
642 | #endif /* CIFS_DEBUG2 */ | |
643 | ||
e4eb295d SF |
644 | } |
645 | } /* end while !EXITING */ | |
646 | ||
1da177e4 LT |
647 | spin_lock(&GlobalMid_Lock); |
648 | server->tcpStatus = CifsExiting; | |
649 | server->tsk = NULL; | |
31ca3bc3 SF |
650 | /* check if we have blocked requests that need to free */ |
651 | /* Note that cifs_max_pending is normally 50, but | |
652 | can be set at module install time to as little as two */ | |
653 | if(atomic_read(&server->inFlight) >= cifs_max_pending) | |
654 | atomic_set(&server->inFlight, cifs_max_pending - 1); | |
655 | /* We do not want to set the max_pending too low or we | |
656 | could end up with the counter going negative */ | |
1da177e4 LT |
657 | spin_unlock(&GlobalMid_Lock); |
658 | /* Although there should not be any requests blocked on | |
659 | this queue it can not hurt to be paranoid and try to wake up requests | |
09d1db5c | 660 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
661 | to the same server - they now will see the session is in exit state |
662 | and get out of SendReceive. */ | |
663 | wake_up_all(&server->request_q); | |
664 | /* give those requests time to exit */ | |
b8643e1b SF |
665 | msleep(125); |
666 | ||
1da177e4 LT |
667 | if(server->ssocket) { |
668 | sock_release(csocket); | |
669 | server->ssocket = NULL; | |
670 | } | |
b8643e1b SF |
671 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
672 | if (bigbuf != NULL) | |
673 | cifs_buf_release(bigbuf); | |
674 | if (smallbuf != NULL) | |
675 | cifs_small_buf_release(smallbuf); | |
1da177e4 LT |
676 | |
677 | read_lock(&GlobalSMBSeslock); | |
678 | if (list_empty(&server->pending_mid_q)) { | |
09d1db5c SF |
679 | /* loop through server session structures attached to this and |
680 | mark them dead */ | |
1da177e4 LT |
681 | list_for_each(tmp, &GlobalSMBSessionList) { |
682 | ses = | |
683 | list_entry(tmp, struct cifsSesInfo, | |
684 | cifsSessionList); | |
685 | if (ses->server == server) { | |
686 | ses->status = CifsExiting; | |
687 | ses->server = NULL; | |
688 | } | |
689 | } | |
690 | read_unlock(&GlobalSMBSeslock); | |
691 | } else { | |
31ca3bc3 SF |
692 | /* although we can not zero the server struct pointer yet, |
693 | since there are active requests which may depnd on them, | |
694 | mark the corresponding SMB sessions as exiting too */ | |
695 | list_for_each(tmp, &GlobalSMBSessionList) { | |
696 | ses = list_entry(tmp, struct cifsSesInfo, | |
697 | cifsSessionList); | |
698 | if (ses->server == server) { | |
699 | ses->status = CifsExiting; | |
700 | } | |
701 | } | |
702 | ||
1da177e4 LT |
703 | spin_lock(&GlobalMid_Lock); |
704 | list_for_each(tmp, &server->pending_mid_q) { | |
705 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
706 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
707 | cFYI(1, | |
09d1db5c | 708 | ("Clearing Mid 0x%x - waking up ",mid_entry->mid)); |
1da177e4 LT |
709 | task_to_wake = mid_entry->tsk; |
710 | if(task_to_wake) { | |
711 | wake_up_process(task_to_wake); | |
712 | } | |
713 | } | |
714 | } | |
715 | spin_unlock(&GlobalMid_Lock); | |
716 | read_unlock(&GlobalSMBSeslock); | |
1da177e4 | 717 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 718 | msleep(125); |
1da177e4 LT |
719 | } |
720 | ||
f191401f | 721 | if (!list_empty(&server->pending_mid_q)) { |
1da177e4 LT |
722 | /* mpx threads have not exited yet give them |
723 | at least the smb send timeout time for long ops */ | |
31ca3bc3 SF |
724 | /* due to delays on oplock break requests, we need |
725 | to wait at least 45 seconds before giving up | |
726 | on a request getting a response and going ahead | |
727 | and killing cifsd */ | |
1da177e4 | 728 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 729 | msleep(46000); |
1da177e4 LT |
730 | /* if threads still have not exited they are probably never |
731 | coming home not much else we can do but free the memory */ | |
732 | } | |
1da177e4 LT |
733 | |
734 | write_lock(&GlobalSMBSeslock); | |
735 | atomic_dec(&tcpSesAllocCount); | |
736 | length = tcpSesAllocCount.counter; | |
31ca3bc3 SF |
737 | |
738 | /* last chance to mark ses pointers invalid | |
739 | if there are any pointing to this (e.g | |
740 | if a crazy root user tried to kill cifsd | |
741 | kernel thread explicitly this might happen) */ | |
742 | list_for_each(tmp, &GlobalSMBSessionList) { | |
743 | ses = list_entry(tmp, struct cifsSesInfo, | |
744 | cifsSessionList); | |
745 | if (ses->server == server) { | |
746 | ses->server = NULL; | |
747 | } | |
748 | } | |
1da177e4 | 749 | write_unlock(&GlobalSMBSeslock); |
31ca3bc3 SF |
750 | |
751 | kfree(server); | |
1da177e4 LT |
752 | if(length > 0) { |
753 | mempool_resize(cifs_req_poolp, | |
754 | length + cifs_min_rcv, | |
755 | GFP_KERNEL); | |
756 | } | |
b8643e1b | 757 | |
f191401f | 758 | complete_and_exit(&cifsd_complete, 0); |
1da177e4 LT |
759 | return 0; |
760 | } | |
761 | ||
1da177e4 LT |
762 | static int |
763 | cifs_parse_mount_options(char *options, const char *devname,struct smb_vol *vol) | |
764 | { | |
765 | char *value; | |
766 | char *data; | |
767 | unsigned int temp_len, i, j; | |
768 | char separator[2]; | |
769 | ||
770 | separator[0] = ','; | |
771 | separator[1] = 0; | |
772 | ||
773 | memset(vol->source_rfc1001_name,0x20,15); | |
774 | for(i=0;i < strnlen(system_utsname.nodename,15);i++) { | |
775 | /* does not have to be a perfect mapping since the field is | |
776 | informational, only used for servers that do not support | |
777 | port 445 and it can be overridden at mount time */ | |
09d1db5c SF |
778 | vol->source_rfc1001_name[i] = |
779 | toupper(system_utsname.nodename[i]); | |
1da177e4 LT |
780 | } |
781 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
782 | /* null target name indicates to use *SMBSERVR default called name |
783 | if we end up sending RFC1001 session initialize */ | |
784 | vol->target_rfc1001_name[0] = 0; | |
1da177e4 LT |
785 | vol->linux_uid = current->uid; /* current->euid instead? */ |
786 | vol->linux_gid = current->gid; | |
787 | vol->dir_mode = S_IRWXUGO; | |
788 | /* 2767 perms indicate mandatory locking support */ | |
789 | vol->file_mode = S_IALLUGO & ~(S_ISUID | S_IXGRP); | |
790 | ||
791 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
792 | vol->rw = TRUE; | |
ac67055e JA |
793 | /* default is always to request posix paths. */ |
794 | vol->posix_paths = 1; | |
795 | ||
1da177e4 LT |
796 | if (!options) |
797 | return 1; | |
798 | ||
799 | if(strncmp(options,"sep=",4) == 0) { | |
800 | if(options[4] != 0) { | |
801 | separator[0] = options[4]; | |
802 | options += 5; | |
803 | } else { | |
804 | cFYI(1,("Null separator not allowed")); | |
805 | } | |
806 | } | |
807 | ||
808 | while ((data = strsep(&options, separator)) != NULL) { | |
809 | if (!*data) | |
810 | continue; | |
811 | if ((value = strchr(data, '=')) != NULL) | |
812 | *value++ = '\0'; | |
813 | ||
814 | if (strnicmp(data, "user_xattr",10) == 0) {/*parse before user*/ | |
815 | vol->no_xattr = 0; | |
816 | } else if (strnicmp(data, "nouser_xattr",12) == 0) { | |
817 | vol->no_xattr = 1; | |
818 | } else if (strnicmp(data, "user", 4) == 0) { | |
819 | if (!value || !*value) { | |
820 | printk(KERN_WARNING | |
821 | "CIFS: invalid or missing username\n"); | |
822 | return 1; /* needs_arg; */ | |
823 | } | |
824 | if (strnlen(value, 200) < 200) { | |
825 | vol->username = value; | |
826 | } else { | |
827 | printk(KERN_WARNING "CIFS: username too long\n"); | |
828 | return 1; | |
829 | } | |
830 | } else if (strnicmp(data, "pass", 4) == 0) { | |
831 | if (!value) { | |
832 | vol->password = NULL; | |
833 | continue; | |
834 | } else if(value[0] == 0) { | |
835 | /* check if string begins with double comma | |
836 | since that would mean the password really | |
837 | does start with a comma, and would not | |
838 | indicate an empty string */ | |
839 | if(value[1] != separator[0]) { | |
840 | vol->password = NULL; | |
841 | continue; | |
842 | } | |
843 | } | |
844 | temp_len = strlen(value); | |
845 | /* removed password length check, NTLM passwords | |
846 | can be arbitrarily long */ | |
847 | ||
848 | /* if comma in password, the string will be | |
849 | prematurely null terminated. Commas in password are | |
850 | specified across the cifs mount interface by a double | |
851 | comma ie ,, and a comma used as in other cases ie ',' | |
852 | as a parameter delimiter/separator is single and due | |
853 | to the strsep above is temporarily zeroed. */ | |
854 | ||
855 | /* NB: password legally can have multiple commas and | |
856 | the only illegal character in a password is null */ | |
857 | ||
09d1db5c SF |
858 | if ((value[temp_len] == 0) && |
859 | (value[temp_len+1] == separator[0])) { | |
1da177e4 LT |
860 | /* reinsert comma */ |
861 | value[temp_len] = separator[0]; | |
862 | temp_len+=2; /* move after the second comma */ | |
863 | while(value[temp_len] != 0) { | |
864 | if (value[temp_len] == separator[0]) { | |
09d1db5c SF |
865 | if (value[temp_len+1] == |
866 | separator[0]) { | |
867 | /* skip second comma */ | |
868 | temp_len++; | |
1da177e4 LT |
869 | } else { |
870 | /* single comma indicating start | |
871 | of next parm */ | |
872 | break; | |
873 | } | |
874 | } | |
875 | temp_len++; | |
876 | } | |
877 | if(value[temp_len] == 0) { | |
878 | options = NULL; | |
879 | } else { | |
880 | value[temp_len] = 0; | |
881 | /* point option to start of next parm */ | |
882 | options = value + temp_len + 1; | |
883 | } | |
884 | /* go from value to value + temp_len condensing | |
885 | double commas to singles. Note that this ends up | |
886 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 887 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
433dc24f SF |
888 | if(vol->password == NULL) { |
889 | printk("CIFS: no memory for pass\n"); | |
890 | return 1; | |
891 | } | |
1da177e4 LT |
892 | for(i=0,j=0;i<temp_len;i++,j++) { |
893 | vol->password[j] = value[i]; | |
09d1db5c SF |
894 | if(value[i] == separator[0] |
895 | && value[i+1] == separator[0]) { | |
1da177e4 LT |
896 | /* skip second comma */ |
897 | i++; | |
898 | } | |
899 | } | |
900 | vol->password[j] = 0; | |
901 | } else { | |
e915fc49 | 902 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
433dc24f SF |
903 | if(vol->password == NULL) { |
904 | printk("CIFS: no memory for pass\n"); | |
905 | return 1; | |
906 | } | |
1da177e4 LT |
907 | strcpy(vol->password, value); |
908 | } | |
909 | } else if (strnicmp(data, "ip", 2) == 0) { | |
910 | if (!value || !*value) { | |
911 | vol->UNCip = NULL; | |
912 | } else if (strnlen(value, 35) < 35) { | |
913 | vol->UNCip = value; | |
914 | } else { | |
915 | printk(KERN_WARNING "CIFS: ip address too long\n"); | |
916 | return 1; | |
917 | } | |
bf820679 SF |
918 | } else if (strnicmp(data, "sec", 3) == 0) { |
919 | if (!value || !*value) { | |
920 | cERROR(1,("no security value specified")); | |
921 | continue; | |
922 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
750d1151 | 923 | vol->secFlg |= CIFSSEC_MAY_KRB5 | |
189acaae | 924 | CIFSSEC_MUST_SIGN; |
bf820679 | 925 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
750d1151 | 926 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
189acaae | 927 | CIFSSEC_MAY_KRB5; */ |
bf820679 SF |
928 | cERROR(1,("Krb5 cifs privacy not supported")); |
929 | return 1; | |
930 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 931 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
bf820679 | 932 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 933 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 934 | CIFSSEC_MUST_SIGN; |
bf820679 | 935 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 936 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 937 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 938 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 939 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
940 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
941 | /* ntlm is default so can be turned off too */ | |
750d1151 | 942 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 943 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 944 | /* BB is there a better way to do this? */ |
750d1151 | 945 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
946 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
947 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
750d1151 | 948 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 949 | #endif |
bf820679 | 950 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 951 | vol->nullauth = 1; |
bf820679 SF |
952 | } else { |
953 | cERROR(1,("bad security option: %s", value)); | |
954 | return 1; | |
955 | } | |
1da177e4 LT |
956 | } else if ((strnicmp(data, "unc", 3) == 0) |
957 | || (strnicmp(data, "target", 6) == 0) | |
958 | || (strnicmp(data, "path", 4) == 0)) { | |
959 | if (!value || !*value) { | |
960 | printk(KERN_WARNING | |
961 | "CIFS: invalid path to network resource\n"); | |
962 | return 1; /* needs_arg; */ | |
963 | } | |
964 | if ((temp_len = strnlen(value, 300)) < 300) { | |
965 | vol->UNC = kmalloc(temp_len+1,GFP_KERNEL); | |
966 | if(vol->UNC == NULL) | |
967 | return 1; | |
968 | strcpy(vol->UNC,value); | |
969 | if (strncmp(vol->UNC, "//", 2) == 0) { | |
970 | vol->UNC[0] = '\\'; | |
971 | vol->UNC[1] = '\\'; | |
972 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
973 | printk(KERN_WARNING | |
974 | "CIFS: UNC Path does not begin with // or \\\\ \n"); | |
975 | return 1; | |
976 | } | |
977 | } else { | |
978 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
979 | return 1; | |
980 | } | |
981 | } else if ((strnicmp(data, "domain", 3) == 0) | |
982 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
983 | if (!value || !*value) { | |
984 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
985 | return 1; /* needs_arg; */ | |
986 | } | |
987 | /* BB are there cases in which a comma can be valid in | |
988 | a domain name and need special handling? */ | |
3979877e | 989 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
990 | vol->domainname = value; |
991 | cFYI(1, ("Domain name set")); | |
992 | } else { | |
993 | printk(KERN_WARNING "CIFS: domain name too long\n"); | |
994 | return 1; | |
995 | } | |
996 | } else if (strnicmp(data, "iocharset", 9) == 0) { | |
997 | if (!value || !*value) { | |
998 | printk(KERN_WARNING "CIFS: invalid iocharset specified\n"); | |
999 | return 1; /* needs_arg; */ | |
1000 | } | |
1001 | if (strnlen(value, 65) < 65) { | |
1002 | if(strnicmp(value,"default",7)) | |
1003 | vol->iocharset = value; | |
1004 | /* if iocharset not set load_nls_default used by caller */ | |
1005 | cFYI(1, ("iocharset set to %s",value)); | |
1006 | } else { | |
1007 | printk(KERN_WARNING "CIFS: iocharset name too long.\n"); | |
1008 | return 1; | |
1009 | } | |
1010 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1011 | if (value && *value) { | |
1012 | vol->linux_uid = | |
1013 | simple_strtoul(value, &value, 0); | |
1014 | } | |
1015 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1016 | if (value && *value) { | |
1017 | vol->linux_gid = | |
1018 | simple_strtoul(value, &value, 0); | |
1019 | } | |
1020 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1021 | if (value && *value) { | |
1022 | vol->file_mode = | |
1023 | simple_strtoul(value, &value, 0); | |
1024 | } | |
1025 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1026 | if (value && *value) { | |
1027 | vol->dir_mode = | |
1028 | simple_strtoul(value, &value, 0); | |
1029 | } | |
1030 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1031 | if (value && *value) { | |
1032 | vol->dir_mode = | |
1033 | simple_strtoul(value, &value, 0); | |
1034 | } | |
1035 | } else if (strnicmp(data, "port", 4) == 0) { | |
1036 | if (value && *value) { | |
1037 | vol->port = | |
1038 | simple_strtoul(value, &value, 0); | |
1039 | } | |
1040 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1041 | if (value && *value) { | |
1042 | vol->rsize = | |
1043 | simple_strtoul(value, &value, 0); | |
1044 | } | |
1045 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1046 | if (value && *value) { | |
1047 | vol->wsize = | |
1048 | simple_strtoul(value, &value, 0); | |
1049 | } | |
1050 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1051 | if (value && *value) { | |
1052 | vol->sockopt = | |
1053 | simple_strtoul(value, &value, 0); | |
1054 | } | |
1055 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1056 | if (!value || !*value || (*value == ' ')) { | |
1057 | cFYI(1,("invalid (empty) netbiosname specified")); | |
1058 | } else { | |
1059 | memset(vol->source_rfc1001_name,0x20,15); | |
1060 | for(i=0;i<15;i++) { | |
1061 | /* BB are there cases in which a comma can be | |
1062 | valid in this workstation netbios name (and need | |
1063 | special handling)? */ | |
1064 | ||
1065 | /* We do not uppercase netbiosname for user */ | |
1066 | if (value[i]==0) | |
1067 | break; | |
1068 | else | |
1069 | vol->source_rfc1001_name[i] = value[i]; | |
1070 | } | |
1071 | /* The string has 16th byte zero still from | |
1072 | set at top of the function */ | |
1073 | if((i==15) && (value[i] != 0)) | |
a10faeb2 SF |
1074 | printk(KERN_WARNING "CIFS: netbiosname longer than 15 truncated.\n"); |
1075 | } | |
1076 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1077 | /* servernetbiosname specified override *SMBSERVER */ | |
1078 | if (!value || !*value || (*value == ' ')) { | |
1079 | cFYI(1,("empty server netbiosname specified")); | |
1080 | } else { | |
1081 | /* last byte, type, is 0x20 for servr type */ | |
1082 | memset(vol->target_rfc1001_name,0x20,16); | |
1083 | ||
1084 | for(i=0;i<15;i++) { | |
1085 | /* BB are there cases in which a comma can be | |
1086 | valid in this workstation netbios name (and need | |
1087 | special handling)? */ | |
1088 | ||
1089 | /* user or mount helper must uppercase netbiosname */ | |
1090 | if (value[i]==0) | |
1091 | break; | |
1092 | else | |
1093 | vol->target_rfc1001_name[i] = value[i]; | |
1094 | } | |
1095 | /* The string has 16th byte zero still from | |
1096 | set at top of the function */ | |
1097 | if((i==15) && (value[i] != 0)) | |
1098 | printk(KERN_WARNING "CIFS: server netbiosname longer than 15 truncated.\n"); | |
1da177e4 LT |
1099 | } |
1100 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1101 | /* ignore */ | |
1102 | } else if (strnicmp(data, "version", 3) == 0) { | |
1103 | /* ignore */ | |
1104 | } else if (strnicmp(data, "guest",5) == 0) { | |
1105 | /* ignore */ | |
1106 | } else if (strnicmp(data, "rw", 2) == 0) { | |
1107 | vol->rw = TRUE; | |
1108 | } else if ((strnicmp(data, "suid", 4) == 0) || | |
1109 | (strnicmp(data, "nosuid", 6) == 0) || | |
1110 | (strnicmp(data, "exec", 4) == 0) || | |
1111 | (strnicmp(data, "noexec", 6) == 0) || | |
1112 | (strnicmp(data, "nodev", 5) == 0) || | |
1113 | (strnicmp(data, "noauto", 6) == 0) || | |
1114 | (strnicmp(data, "dev", 3) == 0)) { | |
1115 | /* The mount tool or mount.cifs helper (if present) | |
1116 | uses these opts to set flags, and the flags are read | |
1117 | by the kernel vfs layer before we get here (ie | |
1118 | before read super) so there is no point trying to | |
1119 | parse these options again and set anything and it | |
1120 | is ok to just ignore them */ | |
1121 | continue; | |
1122 | } else if (strnicmp(data, "ro", 2) == 0) { | |
1123 | vol->rw = FALSE; | |
1124 | } else if (strnicmp(data, "hard", 4) == 0) { | |
1125 | vol->retry = 1; | |
1126 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1127 | vol->retry = 0; | |
1128 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1129 | vol->noperm = 0; | |
1130 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1131 | vol->noperm = 1; | |
6a0b4824 SF |
1132 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1133 | vol->remap = 1; | |
1134 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1135 | vol->remap = 0; | |
d7245c2c SF |
1136 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1137 | vol->sfu_emul = 1; | |
1138 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1139 | vol->sfu_emul = 0; | |
ac67055e JA |
1140 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1141 | vol->posix_paths = 1; | |
1142 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1143 | vol->posix_paths = 0; | |
a10faeb2 SF |
1144 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
1145 | (strnicmp(data, "ignorecase", 10) == 0)) { | |
c46fa8ac SF |
1146 | vol->nocase = 1; |
1147 | } else if (strnicmp(data, "brl", 3) == 0) { | |
1148 | vol->nobrl = 0; | |
cb8be640 | 1149 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1150 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1151 | vol->nobrl = 1; |
d3485d37 SF |
1152 | /* turn off mandatory locking in mode |
1153 | if remote locking is turned off since the | |
1154 | local vfs will do advisory */ | |
1155 | if(vol->file_mode == (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
1156 | vol->file_mode = S_IALLUGO; | |
1da177e4 LT |
1157 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1158 | vol->setuids = 1; | |
1159 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1160 | vol->setuids = 0; | |
1161 | } else if (strnicmp(data, "nohard", 6) == 0) { | |
1162 | vol->retry = 0; | |
1163 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1164 | vol->retry = 1; | |
1165 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1166 | vol->intr = 0; | |
1167 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1168 | vol->intr = 1; | |
1169 | } else if (strnicmp(data, "serverino",7) == 0) { | |
1170 | vol->server_ino = 1; | |
1171 | } else if (strnicmp(data, "noserverino",9) == 0) { | |
1172 | vol->server_ino = 0; | |
0a4b92c0 SF |
1173 | } else if (strnicmp(data, "cifsacl",7) == 0) { |
1174 | vol->cifs_acl = 1; | |
1175 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1176 | vol->cifs_acl = 0; | |
1da177e4 LT |
1177 | } else if (strnicmp(data, "acl",3) == 0) { |
1178 | vol->no_psx_acl = 0; | |
1179 | } else if (strnicmp(data, "noacl",5) == 0) { | |
1180 | vol->no_psx_acl = 1; | |
750d1151 SF |
1181 | } else if (strnicmp(data, "sign",4) == 0) { |
1182 | vol->secFlg |= CIFSSEC_MUST_SIGN; | |
1183 | /* } else if (strnicmp(data, "seal",4) == 0) { | |
1184 | vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
1da177e4 LT |
1185 | } else if (strnicmp(data, "direct",6) == 0) { |
1186 | vol->direct_io = 1; | |
1187 | } else if (strnicmp(data, "forcedirectio",13) == 0) { | |
1188 | vol->direct_io = 1; | |
1189 | } else if (strnicmp(data, "in6_addr",8) == 0) { | |
1190 | if (!value || !*value) { | |
1191 | vol->in6_addr = NULL; | |
1192 | } else if (strnlen(value, 49) == 48) { | |
1193 | vol->in6_addr = value; | |
1194 | } else { | |
1195 | printk(KERN_WARNING "CIFS: ip v6 address not 48 characters long\n"); | |
1196 | return 1; | |
1197 | } | |
1198 | } else if (strnicmp(data, "noac", 4) == 0) { | |
1199 | printk(KERN_WARNING "CIFS: Mount option noac not supported. Instead set /proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1200 | } else | |
1201 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n",data); | |
1202 | } | |
1203 | if (vol->UNC == NULL) { | |
1204 | if(devname == NULL) { | |
1205 | printk(KERN_WARNING "CIFS: Missing UNC name for mount target\n"); | |
1206 | return 1; | |
1207 | } | |
1208 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
1209 | vol->UNC = kmalloc(temp_len+1,GFP_KERNEL); | |
1210 | if(vol->UNC == NULL) | |
1211 | return 1; | |
1212 | strcpy(vol->UNC,devname); | |
1213 | if (strncmp(vol->UNC, "//", 2) == 0) { | |
1214 | vol->UNC[0] = '\\'; | |
1215 | vol->UNC[1] = '\\'; | |
1216 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
1217 | printk(KERN_WARNING "CIFS: UNC Path does not begin with // or \\\\ \n"); | |
1218 | return 1; | |
1219 | } | |
1220 | } else { | |
1221 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1222 | return 1; | |
1223 | } | |
1224 | } | |
1225 | if(vol->UNCip == NULL) | |
1226 | vol->UNCip = &vol->UNC[2]; | |
1227 | ||
1228 | return 0; | |
1229 | } | |
1230 | ||
1231 | static struct cifsSesInfo * | |
1232 | cifs_find_tcp_session(struct in_addr * target_ip_addr, | |
1233 | struct in6_addr *target_ip6_addr, | |
1234 | char *userName, struct TCP_Server_Info **psrvTcp) | |
1235 | { | |
1236 | struct list_head *tmp; | |
1237 | struct cifsSesInfo *ses; | |
1238 | *psrvTcp = NULL; | |
1239 | read_lock(&GlobalSMBSeslock); | |
1240 | ||
1241 | list_for_each(tmp, &GlobalSMBSessionList) { | |
1242 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
1243 | if (ses->server) { | |
1244 | if((target_ip_addr && | |
1245 | (ses->server->addr.sockAddr.sin_addr.s_addr | |
1246 | == target_ip_addr->s_addr)) || (target_ip6_addr | |
1247 | && memcmp(&ses->server->addr.sockAddr6.sin6_addr, | |
1248 | target_ip6_addr,sizeof(*target_ip6_addr)))){ | |
1249 | /* BB lock server and tcp session and increment use count here?? */ | |
1250 | *psrvTcp = ses->server; /* found a match on the TCP session */ | |
1251 | /* BB check if reconnection needed */ | |
1252 | if (strncmp | |
1253 | (ses->userName, userName, | |
1254 | MAX_USERNAME_SIZE) == 0){ | |
1255 | read_unlock(&GlobalSMBSeslock); | |
1256 | return ses; /* found exact match on both tcp and SMB sessions */ | |
1257 | } | |
1258 | } | |
1259 | } | |
1260 | /* else tcp and smb sessions need reconnection */ | |
1261 | } | |
1262 | read_unlock(&GlobalSMBSeslock); | |
1263 | return NULL; | |
1264 | } | |
1265 | ||
1266 | static struct cifsTconInfo * | |
1267 | find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) | |
1268 | { | |
1269 | struct list_head *tmp; | |
1270 | struct cifsTconInfo *tcon; | |
1271 | ||
1272 | read_lock(&GlobalSMBSeslock); | |
1273 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
1274 | cFYI(1, ("Next tcon - ")); | |
1275 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); | |
1276 | if (tcon->ses) { | |
1277 | if (tcon->ses->server) { | |
1278 | cFYI(1, | |
1279 | (" old ip addr: %x == new ip %x ?", | |
1280 | tcon->ses->server->addr.sockAddr.sin_addr. | |
1281 | s_addr, new_target_ip_addr)); | |
1282 | if (tcon->ses->server->addr.sockAddr.sin_addr. | |
1283 | s_addr == new_target_ip_addr) { | |
1284 | /* BB lock tcon and server and tcp session and increment use count here? */ | |
1285 | /* found a match on the TCP session */ | |
1286 | /* BB check if reconnection needed */ | |
1287 | cFYI(1,("Matched ip, old UNC: %s == new: %s ?", | |
1288 | tcon->treeName, uncName)); | |
1289 | if (strncmp | |
1290 | (tcon->treeName, uncName, | |
1291 | MAX_TREE_SIZE) == 0) { | |
1292 | cFYI(1, | |
1293 | ("Matched UNC, old user: %s == new: %s ?", | |
1294 | tcon->treeName, uncName)); | |
1295 | if (strncmp | |
1296 | (tcon->ses->userName, | |
1297 | userName, | |
1298 | MAX_USERNAME_SIZE) == 0) { | |
1299 | read_unlock(&GlobalSMBSeslock); | |
1300 | return tcon;/* also matched user (smb session)*/ | |
1301 | } | |
1302 | } | |
1303 | } | |
1304 | } | |
1305 | } | |
1306 | } | |
1307 | read_unlock(&GlobalSMBSeslock); | |
1308 | return NULL; | |
1309 | } | |
1310 | ||
1311 | int | |
1312 | connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo, | |
737b758c SF |
1313 | const char *old_path, const struct nls_table *nls_codepage, |
1314 | int remap) | |
1da177e4 LT |
1315 | { |
1316 | unsigned char *referrals = NULL; | |
1317 | unsigned int num_referrals; | |
1318 | int rc = 0; | |
1319 | ||
1320 | rc = get_dfs_path(xid, pSesInfo,old_path, nls_codepage, | |
737b758c | 1321 | &num_referrals, &referrals, remap); |
1da177e4 LT |
1322 | |
1323 | /* BB Add in code to: if valid refrl, if not ip address contact | |
1324 | the helper that resolves tcp names, mount to it, try to | |
1325 | tcon to it unmount it if fail */ | |
1326 | ||
f99d49ad | 1327 | kfree(referrals); |
1da177e4 LT |
1328 | |
1329 | return rc; | |
1330 | } | |
1331 | ||
1332 | int | |
1333 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, | |
1334 | const char *old_path, const struct nls_table *nls_codepage, | |
737b758c SF |
1335 | unsigned int *pnum_referrals, |
1336 | unsigned char ** preferrals, int remap) | |
1da177e4 LT |
1337 | { |
1338 | char *temp_unc; | |
1339 | int rc = 0; | |
1340 | ||
1341 | *pnum_referrals = 0; | |
1342 | ||
1343 | if (pSesInfo->ipc_tid == 0) { | |
1344 | temp_unc = kmalloc(2 /* for slashes */ + | |
1345 | strnlen(pSesInfo->serverName,SERVER_NAME_LEN_WITH_NULL * 2) | |
1346 | + 1 + 4 /* slash IPC$ */ + 2, | |
1347 | GFP_KERNEL); | |
1348 | if (temp_unc == NULL) | |
1349 | return -ENOMEM; | |
1350 | temp_unc[0] = '\\'; | |
1351 | temp_unc[1] = '\\'; | |
1352 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1353 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1354 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1355 | cFYI(1, | |
1356 | ("CIFS Tcon rc = %d ipc_tid = %d", rc,pSesInfo->ipc_tid)); | |
1357 | kfree(temp_unc); | |
1358 | } | |
1359 | if (rc == 0) | |
1360 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, | |
737b758c | 1361 | pnum_referrals, nls_codepage, remap); |
1da177e4 LT |
1362 | |
1363 | return rc; | |
1364 | } | |
1365 | ||
1366 | /* See RFC1001 section 14 on representation of Netbios names */ | |
1367 | static void rfc1002mangle(char * target,char * source, unsigned int length) | |
1368 | { | |
1369 | unsigned int i,j; | |
1370 | ||
1371 | for(i=0,j=0;i<(length);i++) { | |
1372 | /* mask a nibble at a time and encode */ | |
1373 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1374 | target[j+1] = 'A' + (0x0F & source[i]); | |
1375 | j+=2; | |
1376 | } | |
1377 | ||
1378 | } | |
1379 | ||
1380 | ||
1381 | static int | |
1382 | ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, | |
a10faeb2 | 1383 | char * netbios_name, char * target_name) |
1da177e4 LT |
1384 | { |
1385 | int rc = 0; | |
1386 | int connected = 0; | |
1387 | __be16 orig_port = 0; | |
1388 | ||
1389 | if(*csocket == NULL) { | |
1390 | rc = sock_create_kern(PF_INET, SOCK_STREAM, IPPROTO_TCP, csocket); | |
1391 | if (rc < 0) { | |
1392 | cERROR(1, ("Error %d creating socket",rc)); | |
1393 | *csocket = NULL; | |
1394 | return rc; | |
1395 | } else { | |
1396 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1397 | cFYI(1,("Socket created")); | |
1398 | (*csocket)->sk->sk_allocation = GFP_NOFS; | |
1399 | } | |
1400 | } | |
1401 | ||
1402 | psin_server->sin_family = AF_INET; | |
1403 | if(psin_server->sin_port) { /* user overrode default port */ | |
1404 | rc = (*csocket)->ops->connect(*csocket, | |
1405 | (struct sockaddr *) psin_server, | |
1406 | sizeof (struct sockaddr_in),0); | |
1407 | if (rc >= 0) | |
1408 | connected = 1; | |
1409 | } | |
1410 | ||
1411 | if(!connected) { | |
1412 | /* save original port so we can retry user specified port | |
1413 | later if fall back ports fail this time */ | |
1414 | orig_port = psin_server->sin_port; | |
1415 | ||
1416 | /* do not retry on the same port we just failed on */ | |
1417 | if(psin_server->sin_port != htons(CIFS_PORT)) { | |
1418 | psin_server->sin_port = htons(CIFS_PORT); | |
1419 | ||
1420 | rc = (*csocket)->ops->connect(*csocket, | |
1421 | (struct sockaddr *) psin_server, | |
1422 | sizeof (struct sockaddr_in),0); | |
1423 | if (rc >= 0) | |
1424 | connected = 1; | |
1425 | } | |
1426 | } | |
1427 | if (!connected) { | |
1428 | psin_server->sin_port = htons(RFC1001_PORT); | |
1429 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
1430 | psin_server, sizeof (struct sockaddr_in),0); | |
1431 | if (rc >= 0) | |
1432 | connected = 1; | |
1433 | } | |
1434 | ||
1435 | /* give up here - unless we want to retry on different | |
1436 | protocol families some day */ | |
1437 | if (!connected) { | |
1438 | if(orig_port) | |
1439 | psin_server->sin_port = orig_port; | |
1440 | cFYI(1,("Error %d connecting to server via ipv4",rc)); | |
1441 | sock_release(*csocket); | |
1442 | *csocket = NULL; | |
1443 | return rc; | |
1444 | } | |
1445 | /* Eventually check for other socket options to change from | |
1446 | the default. sock_setsockopt not used because it expects | |
1447 | user space buffer */ | |
b387eaeb SF |
1448 | cFYI(1,("sndbuf %d rcvbuf %d rcvtimeo 0x%lx",(*csocket)->sk->sk_sndbuf, |
1449 | (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo)); | |
1da177e4 | 1450 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; |
b387eaeb SF |
1451 | /* make the bufsizes depend on wsize/rsize and max requests */ |
1452 | if((*csocket)->sk->sk_sndbuf < (200 * 1024)) | |
1453 | (*csocket)->sk->sk_sndbuf = 200 * 1024; | |
1454 | if((*csocket)->sk->sk_rcvbuf < (140 * 1024)) | |
1455 | (*csocket)->sk->sk_rcvbuf = 140 * 1024; | |
1da177e4 LT |
1456 | |
1457 | /* send RFC1001 sessinit */ | |
1da177e4 LT |
1458 | if(psin_server->sin_port == htons(RFC1001_PORT)) { |
1459 | /* some servers require RFC1001 sessinit before sending | |
1460 | negprot - BB check reconnection in case where second | |
1461 | sessinit is sent but no second negprot */ | |
1462 | struct rfc1002_session_packet * ses_init_buf; | |
1463 | struct smb_hdr * smb_buf; | |
e915fc49 | 1464 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), GFP_KERNEL); |
1da177e4 LT |
1465 | if(ses_init_buf) { |
1466 | ses_init_buf->trailer.session_req.called_len = 32; | |
a10faeb2 SF |
1467 | if(target_name && (target_name[0] != 0)) { |
1468 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
1469 | target_name, 16); | |
1470 | } else { | |
1471 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
1472 | DEFAULT_CIFS_CALLED_NAME,16); | |
1473 | } | |
1474 | ||
1da177e4 LT |
1475 | ses_init_buf->trailer.session_req.calling_len = 32; |
1476 | /* calling name ends in null (byte 16) from old smb | |
1477 | convention. */ | |
1478 | if(netbios_name && (netbios_name[0] !=0)) { | |
1479 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
1480 | netbios_name,16); | |
1481 | } else { | |
1482 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
1483 | "LINUX_CIFS_CLNT",16); | |
1484 | } | |
1485 | ses_init_buf->trailer.session_req.scope1 = 0; | |
1486 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1487 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1488 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1489 | smb_buf->smb_buf_length = 0x81000044; | |
1490 | rc = smb_send(*csocket, smb_buf, 0x44, | |
1491 | (struct sockaddr *)psin_server); | |
1492 | kfree(ses_init_buf); | |
083d3a2c SF |
1493 | msleep(1); /* RFC1001 layer in at least one server |
1494 | requires very short break before negprot | |
1495 | presumably because not expecting negprot | |
1496 | to follow so fast. This is a simple | |
1497 | solution that works without | |
1498 | complicating the code and causes no | |
1499 | significant slowing down on mount | |
1500 | for everyone else */ | |
1da177e4 LT |
1501 | } |
1502 | /* else the negprot may still work without this | |
1503 | even though malloc failed */ | |
1504 | ||
1505 | } | |
1506 | ||
1507 | return rc; | |
1508 | } | |
1509 | ||
1510 | static int | |
1511 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket) | |
1512 | { | |
1513 | int rc = 0; | |
1514 | int connected = 0; | |
1515 | __be16 orig_port = 0; | |
1516 | ||
1517 | if(*csocket == NULL) { | |
1518 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, IPPROTO_TCP, csocket); | |
1519 | if (rc < 0) { | |
1520 | cERROR(1, ("Error %d creating ipv6 socket",rc)); | |
1521 | *csocket = NULL; | |
1522 | return rc; | |
1523 | } else { | |
1524 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1525 | cFYI(1,("ipv6 Socket created")); | |
1526 | (*csocket)->sk->sk_allocation = GFP_NOFS; | |
1527 | } | |
1528 | } | |
1529 | ||
1530 | psin_server->sin6_family = AF_INET6; | |
1531 | ||
1532 | if(psin_server->sin6_port) { /* user overrode default port */ | |
1533 | rc = (*csocket)->ops->connect(*csocket, | |
1534 | (struct sockaddr *) psin_server, | |
1535 | sizeof (struct sockaddr_in6),0); | |
1536 | if (rc >= 0) | |
1537 | connected = 1; | |
1538 | } | |
1539 | ||
1540 | if(!connected) { | |
1541 | /* save original port so we can retry user specified port | |
1542 | later if fall back ports fail this time */ | |
1543 | ||
1544 | orig_port = psin_server->sin6_port; | |
1545 | /* do not retry on the same port we just failed on */ | |
1546 | if(psin_server->sin6_port != htons(CIFS_PORT)) { | |
1547 | psin_server->sin6_port = htons(CIFS_PORT); | |
1548 | ||
1549 | rc = (*csocket)->ops->connect(*csocket, | |
1550 | (struct sockaddr *) psin_server, | |
1551 | sizeof (struct sockaddr_in6),0); | |
1552 | if (rc >= 0) | |
1553 | connected = 1; | |
1554 | } | |
1555 | } | |
1556 | if (!connected) { | |
1557 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1558 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
1559 | psin_server, sizeof (struct sockaddr_in6),0); | |
1560 | if (rc >= 0) | |
1561 | connected = 1; | |
1562 | } | |
1563 | ||
1564 | /* give up here - unless we want to retry on different | |
1565 | protocol families some day */ | |
1566 | if (!connected) { | |
1567 | if(orig_port) | |
1568 | psin_server->sin6_port = orig_port; | |
1569 | cFYI(1,("Error %d connecting to server via ipv6",rc)); | |
1570 | sock_release(*csocket); | |
1571 | *csocket = NULL; | |
1572 | return rc; | |
1573 | } | |
1574 | /* Eventually check for other socket options to change from | |
1575 | the default. sock_setsockopt not used because it expects | |
1576 | user space buffer */ | |
1577 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
1578 | ||
1579 | return rc; | |
1580 | } | |
1581 | ||
1582 | int | |
1583 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1584 | char *mount_data, const char *devname) | |
1585 | { | |
1586 | int rc = 0; | |
1587 | int xid; | |
1588 | int address_type = AF_INET; | |
1589 | struct socket *csocket = NULL; | |
1590 | struct sockaddr_in sin_server; | |
1591 | struct sockaddr_in6 sin_server6; | |
1592 | struct smb_vol volume_info; | |
1593 | struct cifsSesInfo *pSesInfo = NULL; | |
1594 | struct cifsSesInfo *existingCifsSes = NULL; | |
1595 | struct cifsTconInfo *tcon = NULL; | |
1596 | struct TCP_Server_Info *srvTcp = NULL; | |
1597 | ||
1598 | xid = GetXid(); | |
1599 | ||
1600 | /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ | |
1601 | ||
1602 | memset(&volume_info,0,sizeof(struct smb_vol)); | |
1603 | if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { | |
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.username) { | |
1611 | /* BB fixme parse for domain name here */ | |
1612 | cFYI(1, ("Username: %s ", volume_info.username)); | |
1613 | ||
1614 | } else { | |
bf820679 | 1615 | cifserror("No username specified"); |
1da177e4 LT |
1616 | /* In userspace mount helper we can get user name from alternate |
1617 | locations such as env variables and files on disk */ | |
f99d49ad JJ |
1618 | kfree(volume_info.UNC); |
1619 | kfree(volume_info.password); | |
1da177e4 LT |
1620 | FreeXid(xid); |
1621 | return -EINVAL; | |
1622 | } | |
1623 | ||
1624 | if (volume_info.UNCip && volume_info.UNC) { | |
1625 | rc = cifs_inet_pton(AF_INET, volume_info.UNCip,&sin_server.sin_addr.s_addr); | |
1626 | ||
1627 | if(rc <= 0) { | |
1628 | /* not ipv4 address, try ipv6 */ | |
1629 | rc = cifs_inet_pton(AF_INET6,volume_info.UNCip,&sin_server6.sin6_addr.in6_u); | |
1630 | if(rc > 0) | |
1631 | address_type = AF_INET6; | |
1632 | } else { | |
1633 | address_type = AF_INET; | |
1634 | } | |
1635 | ||
1636 | if(rc <= 0) { | |
1637 | /* we failed translating address */ | |
f99d49ad JJ |
1638 | kfree(volume_info.UNC); |
1639 | kfree(volume_info.password); | |
1da177e4 LT |
1640 | FreeXid(xid); |
1641 | return -EINVAL; | |
1642 | } | |
1643 | ||
1644 | cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); | |
1645 | /* success */ | |
1646 | rc = 0; | |
1647 | } else if (volume_info.UNCip){ | |
1648 | /* BB using ip addr as server name connect to the DFS root below */ | |
1649 | cERROR(1,("Connecting to DFS root not implemented yet")); | |
f99d49ad JJ |
1650 | kfree(volume_info.UNC); |
1651 | kfree(volume_info.password); | |
1da177e4 LT |
1652 | FreeXid(xid); |
1653 | return -EINVAL; | |
1654 | } else /* which servers DFS root would we conect to */ { | |
1655 | cERROR(1, | |
bf820679 | 1656 | ("CIFS mount error: No UNC path (e.g. -o unc=//192.168.1.100/public) specified")); |
f99d49ad JJ |
1657 | kfree(volume_info.UNC); |
1658 | kfree(volume_info.password); | |
1da177e4 LT |
1659 | FreeXid(xid); |
1660 | return -EINVAL; | |
1661 | } | |
1662 | ||
1663 | /* this is needed for ASCII cp to Unicode converts */ | |
1664 | if(volume_info.iocharset == NULL) { | |
1665 | cifs_sb->local_nls = load_nls_default(); | |
1666 | /* load_nls_default can not return null */ | |
1667 | } else { | |
1668 | cifs_sb->local_nls = load_nls(volume_info.iocharset); | |
1669 | if(cifs_sb->local_nls == NULL) { | |
1670 | cERROR(1,("CIFS mount error: iocharset %s not found",volume_info.iocharset)); | |
f99d49ad JJ |
1671 | kfree(volume_info.UNC); |
1672 | kfree(volume_info.password); | |
1da177e4 LT |
1673 | FreeXid(xid); |
1674 | return -ELIBACC; | |
1675 | } | |
1676 | } | |
1677 | ||
1678 | if(address_type == AF_INET) | |
1679 | existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr, | |
1680 | NULL /* no ipv6 addr */, | |
1681 | volume_info.username, &srvTcp); | |
1682 | else if(address_type == AF_INET6) | |
1683 | existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */, | |
1684 | &sin_server6.sin6_addr, | |
1685 | volume_info.username, &srvTcp); | |
1686 | else { | |
f99d49ad JJ |
1687 | kfree(volume_info.UNC); |
1688 | kfree(volume_info.password); | |
1da177e4 LT |
1689 | FreeXid(xid); |
1690 | return -EINVAL; | |
1691 | } | |
1692 | ||
1693 | ||
1694 | if (srvTcp) { | |
bf820679 | 1695 | cFYI(1, ("Existing tcp session with server found")); |
1da177e4 LT |
1696 | } else { /* create socket */ |
1697 | if(volume_info.port) | |
1698 | sin_server.sin_port = htons(volume_info.port); | |
1699 | else | |
1700 | sin_server.sin_port = 0; | |
a10faeb2 SF |
1701 | rc = ipv4_connect(&sin_server,&csocket, |
1702 | volume_info.source_rfc1001_name, | |
1703 | volume_info.target_rfc1001_name); | |
1da177e4 LT |
1704 | if (rc < 0) { |
1705 | cERROR(1, | |
1706 | ("Error connecting to IPv4 socket. Aborting operation")); | |
1707 | if(csocket != NULL) | |
1708 | sock_release(csocket); | |
f99d49ad JJ |
1709 | kfree(volume_info.UNC); |
1710 | kfree(volume_info.password); | |
1da177e4 LT |
1711 | FreeXid(xid); |
1712 | return rc; | |
1713 | } | |
1714 | ||
1715 | srvTcp = kmalloc(sizeof (struct TCP_Server_Info), GFP_KERNEL); | |
1716 | if (srvTcp == NULL) { | |
1717 | rc = -ENOMEM; | |
1718 | sock_release(csocket); | |
f99d49ad JJ |
1719 | kfree(volume_info.UNC); |
1720 | kfree(volume_info.password); | |
1da177e4 LT |
1721 | FreeXid(xid); |
1722 | return rc; | |
1723 | } else { | |
1724 | memset(srvTcp, 0, sizeof (struct TCP_Server_Info)); | |
1725 | memcpy(&srvTcp->addr.sockAddr, &sin_server, sizeof (struct sockaddr_in)); | |
1726 | atomic_set(&srvTcp->inFlight,0); | |
1727 | /* BB Add code for ipv6 case too */ | |
1728 | srvTcp->ssocket = csocket; | |
1729 | srvTcp->protocolType = IPV4; | |
1730 | init_waitqueue_head(&srvTcp->response_q); | |
1731 | init_waitqueue_head(&srvTcp->request_q); | |
1732 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
1733 | /* at this point we are the only ones with the pointer | |
1734 | to the struct since the kernel thread not created yet | |
1735 | so no need to spinlock this init of tcpStatus */ | |
1736 | srvTcp->tcpStatus = CifsNew; | |
1737 | init_MUTEX(&srvTcp->tcpSem); | |
1738 | rc = (int)kernel_thread((void *)(void *)cifs_demultiplex_thread, srvTcp, | |
1739 | CLONE_FS | CLONE_FILES | CLONE_VM); | |
1740 | if(rc < 0) { | |
1741 | rc = -ENOMEM; | |
1742 | sock_release(csocket); | |
f99d49ad JJ |
1743 | kfree(volume_info.UNC); |
1744 | kfree(volume_info.password); | |
1da177e4 LT |
1745 | FreeXid(xid); |
1746 | return rc; | |
f191401f SF |
1747 | } |
1748 | wait_for_completion(&cifsd_complete); | |
1749 | rc = 0; | |
1da177e4 | 1750 | memcpy(srvTcp->workstation_RFC1001_name, volume_info.source_rfc1001_name,16); |
a10faeb2 | 1751 | memcpy(srvTcp->server_RFC1001_name, volume_info.target_rfc1001_name,16); |
ad009ac9 | 1752 | srvTcp->sequence_number = 0; |
1da177e4 LT |
1753 | } |
1754 | } | |
1755 | ||
1756 | if (existingCifsSes) { | |
1757 | pSesInfo = existingCifsSes; | |
bf820679 | 1758 | cFYI(1, ("Existing smb sess found")); |
f99d49ad | 1759 | kfree(volume_info.password); |
1da177e4 LT |
1760 | /* volume_info.UNC freed at end of function */ |
1761 | } else if (!rc) { | |
bf820679 | 1762 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 LT |
1763 | pSesInfo = sesInfoAlloc(); |
1764 | if (pSesInfo == NULL) | |
1765 | rc = -ENOMEM; | |
1766 | else { | |
1767 | pSesInfo->server = srvTcp; | |
1768 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
1769 | NIPQUAD(sin_server.sin_addr.s_addr)); | |
1770 | } | |
1771 | ||
1772 | if (!rc){ | |
1773 | /* volume_info.password freed at unmount */ | |
1774 | if (volume_info.password) | |
1775 | pSesInfo->password = volume_info.password; | |
1776 | if (volume_info.username) | |
1777 | strncpy(pSesInfo->userName, | |
1778 | volume_info.username,MAX_USERNAME_SIZE); | |
3979877e SF |
1779 | if (volume_info.domainname) { |
1780 | int len = strlen(volume_info.domainname); | |
1781 | pSesInfo->domainName = | |
1782 | kmalloc(len + 1, GFP_KERNEL); | |
1783 | if(pSesInfo->domainName) | |
1784 | strcpy(pSesInfo->domainName, | |
1785 | volume_info.domainname); | |
1786 | } | |
1da177e4 | 1787 | pSesInfo->linux_uid = volume_info.linux_uid; |
750d1151 | 1788 | pSesInfo->overrideSecFlg = volume_info.secFlg; |
1da177e4 | 1789 | down(&pSesInfo->sesSem); |
189acaae | 1790 | /* BB FIXME need to pass vol->secFlgs BB */ |
1da177e4 LT |
1791 | rc = cifs_setup_session(xid,pSesInfo, cifs_sb->local_nls); |
1792 | up(&pSesInfo->sesSem); | |
1793 | if(!rc) | |
1794 | atomic_inc(&srvTcp->socketUseCount); | |
1795 | } else | |
f99d49ad | 1796 | kfree(volume_info.password); |
1da177e4 LT |
1797 | } |
1798 | ||
1799 | /* search for existing tcon to this server share */ | |
1800 | if (!rc) { | |
0ae0efad SF |
1801 | if(volume_info.rsize > CIFSMaxBufSize) { |
1802 | cERROR(1,("rsize %d too large, using MaxBufSize", | |
1803 | volume_info.rsize)); | |
1804 | cifs_sb->rsize = CIFSMaxBufSize; | |
1805 | } else if((volume_info.rsize) && (volume_info.rsize <= CIFSMaxBufSize)) | |
1da177e4 | 1806 | cifs_sb->rsize = volume_info.rsize; |
0ae0efad SF |
1807 | else /* default */ |
1808 | cifs_sb->rsize = CIFSMaxBufSize; | |
1809 | ||
1810 | if(volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { | |
1811 | cERROR(1,("wsize %d too large using 4096 instead", | |
1812 | volume_info.wsize)); | |
1813 | cifs_sb->wsize = 4096; | |
1814 | } else if(volume_info.wsize) | |
1da177e4 LT |
1815 | cifs_sb->wsize = volume_info.wsize; |
1816 | else | |
17cbbafe | 1817 | cifs_sb->wsize = |
1877c9ea SF |
1818 | min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE, |
1819 | 127*1024); | |
17cbbafe SF |
1820 | /* old default of CIFSMaxBufSize was too small now |
1821 | that SMB Write2 can send multiple pages in kvec. | |
1822 | RFC1001 does not describe what happens when frame | |
1823 | bigger than 128K is sent so use that as max in | |
1824 | conjunction with 52K kvec constraint on arch with 4K | |
1825 | page size */ | |
1826 | ||
6cec2aed SF |
1827 | if(cifs_sb->rsize < 2048) { |
1828 | cifs_sb->rsize = 2048; | |
1829 | /* Windows ME may prefer this */ | |
1830 | cFYI(1,("readsize set to minimum 2048")); | |
1da177e4 LT |
1831 | } |
1832 | cifs_sb->mnt_uid = volume_info.linux_uid; | |
1833 | cifs_sb->mnt_gid = volume_info.linux_gid; | |
1834 | cifs_sb->mnt_file_mode = volume_info.file_mode; | |
1835 | cifs_sb->mnt_dir_mode = volume_info.dir_mode; | |
eeac8047 SF |
1836 | cFYI(1,("file mode: 0x%x dir mode: 0x%x", |
1837 | cifs_sb->mnt_file_mode,cifs_sb->mnt_dir_mode)); | |
1da177e4 LT |
1838 | |
1839 | if(volume_info.noperm) | |
1840 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; | |
1841 | if(volume_info.setuids) | |
1842 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; | |
1843 | if(volume_info.server_ino) | |
1844 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; | |
6a0b4824 SF |
1845 | if(volume_info.remap) |
1846 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; | |
1da177e4 LT |
1847 | if(volume_info.no_xattr) |
1848 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; | |
d7245c2c SF |
1849 | if(volume_info.sfu_emul) |
1850 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; | |
c46fa8ac SF |
1851 | if(volume_info.nobrl) |
1852 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; | |
0a4b92c0 SF |
1853 | if(volume_info.cifs_acl) |
1854 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; | |
ac67055e | 1855 | |
1da177e4 | 1856 | if(volume_info.direct_io) { |
c46fa8ac | 1857 | cFYI(1,("mounting share using direct i/o")); |
1da177e4 LT |
1858 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
1859 | } | |
1860 | ||
1861 | tcon = | |
1862 | find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, | |
1863 | volume_info.username); | |
1864 | if (tcon) { | |
bf820679 | 1865 | cFYI(1, ("Found match on UNC path")); |
1da177e4 LT |
1866 | /* we can have only one retry value for a connection |
1867 | to a share so for resources mounted more than once | |
1868 | to the same server share the last value passed in | |
1869 | for the retry flag is used */ | |
1870 | tcon->retry = volume_info.retry; | |
d3485d37 | 1871 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
1872 | } else { |
1873 | tcon = tconInfoAlloc(); | |
1874 | if (tcon == NULL) | |
1875 | rc = -ENOMEM; | |
1876 | else { | |
1877 | /* check for null share name ie connect to dfs root */ | |
1878 | ||
1879 | /* BB check if this works for exactly length three strings */ | |
1880 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) | |
1881 | && (strchr(volume_info.UNC + 3, '/') == | |
1882 | NULL)) { | |
737b758c SF |
1883 | rc = connect_to_dfs_path(xid, pSesInfo, |
1884 | "", cifs_sb->local_nls, | |
1885 | cifs_sb->mnt_cifs_flags & | |
1886 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
f99d49ad | 1887 | kfree(volume_info.UNC); |
1da177e4 LT |
1888 | FreeXid(xid); |
1889 | return -ENODEV; | |
1890 | } else { | |
1891 | rc = CIFSTCon(xid, pSesInfo, | |
1892 | volume_info.UNC, | |
1893 | tcon, cifs_sb->local_nls); | |
1894 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
1895 | } | |
1896 | if (!rc) { | |
1897 | atomic_inc(&pSesInfo->inUse); | |
1898 | tcon->retry = volume_info.retry; | |
d3485d37 | 1899 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
1900 | } |
1901 | } | |
1902 | } | |
1903 | } | |
1904 | if(pSesInfo) { | |
1905 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { | |
1906 | sb->s_maxbytes = (u64) 1 << 63; | |
1907 | } else | |
1908 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
1909 | } | |
1910 | ||
1911 | sb->s_time_gran = 100; | |
1912 | ||
1913 | /* on error free sesinfo and tcon struct if needed */ | |
1914 | if (rc) { | |
1915 | /* if session setup failed, use count is zero but | |
1916 | we still need to free cifsd thread */ | |
1917 | if(atomic_read(&srvTcp->socketUseCount) == 0) { | |
1918 | spin_lock(&GlobalMid_Lock); | |
1919 | srvTcp->tcpStatus = CifsExiting; | |
1920 | spin_unlock(&GlobalMid_Lock); | |
f191401f | 1921 | if(srvTcp->tsk) { |
1da177e4 | 1922 | send_sig(SIGKILL,srvTcp->tsk,1); |
f191401f SF |
1923 | wait_for_completion(&cifsd_complete); |
1924 | } | |
1da177e4 LT |
1925 | } |
1926 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
1927 | if (tcon) /* up accidently freeing someone elses tcon struct */ | |
1928 | tconInfoFree(tcon); | |
1929 | if (existingCifsSes == NULL) { | |
1930 | if (pSesInfo) { | |
1931 | if ((pSesInfo->server) && | |
1932 | (pSesInfo->status == CifsGood)) { | |
1933 | int temp_rc; | |
1934 | temp_rc = CIFSSMBLogoff(xid, pSesInfo); | |
1935 | /* if the socketUseCount is now zero */ | |
1936 | if((temp_rc == -ESHUTDOWN) && | |
f191401f | 1937 | (pSesInfo->server->tsk)) { |
1da177e4 | 1938 | send_sig(SIGKILL,pSesInfo->server->tsk,1); |
f191401f SF |
1939 | wait_for_completion(&cifsd_complete); |
1940 | } | |
1da177e4 LT |
1941 | } else |
1942 | cFYI(1, ("No session or bad tcon")); | |
1943 | sesInfoFree(pSesInfo); | |
1944 | /* pSesInfo = NULL; */ | |
1945 | } | |
1946 | } | |
1947 | } else { | |
1948 | atomic_inc(&tcon->useCount); | |
1949 | cifs_sb->tcon = tcon; | |
1950 | tcon->ses = pSesInfo; | |
1951 | ||
82940a46 | 1952 | /* do not care if following two calls succeed - informational */ |
737b758c SF |
1953 | CIFSSMBQFSDeviceInfo(xid, tcon); |
1954 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
82940a46 | 1955 | |
1da177e4 | 1956 | if (tcon->ses->capabilities & CAP_UNIX) { |
737b758c | 1957 | if(!CIFSSMBQFSUnixInfo(xid, tcon)) { |
82940a46 SF |
1958 | __u64 cap = |
1959 | le64_to_cpu(tcon->fsUnixInfo.Capability); | |
1960 | cap &= CIFS_UNIX_CAP_MASK; | |
1961 | if(volume_info.no_psx_acl) | |
1962 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
1963 | else if(CIFS_UNIX_POSIX_ACL_CAP & cap) { | |
1964 | cFYI(1,("negotiated posix acl support")); | |
1965 | sb->s_flags |= MS_POSIXACL; | |
1da177e4 | 1966 | } |
ac67055e | 1967 | |
82940a46 SF |
1968 | if(volume_info.posix_paths == 0) |
1969 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; | |
1970 | else if(cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { | |
1971 | cFYI(1,("negotiate posix pathnames")); | |
1972 | cifs_sb->mnt_cifs_flags |= | |
1973 | CIFS_MOUNT_POSIX_PATHS; | |
1974 | } | |
1975 | ||
1976 | cFYI(1,("Negotiate caps 0x%x",(int)cap)); | |
3a5ff61c SF |
1977 | #ifdef CONFIG_CIFS_DEBUG2 |
1978 | if(cap & CIFS_UNIX_FCNTL_CAP) | |
1979 | cFYI(1,("FCNTL cap")); | |
1980 | if(cap & CIFS_UNIX_EXTATTR_CAP) | |
1981 | cFYI(1,("EXTATTR cap")); | |
1982 | if(cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) | |
1983 | cFYI(1,("POSIX path cap")); | |
1984 | if(cap & CIFS_UNIX_XATTR_CAP) | |
1985 | cFYI(1,("XATTR cap")); | |
1986 | if(cap & CIFS_UNIX_POSIX_ACL_CAP) | |
1987 | cFYI(1,("POSIX ACL cap")); | |
1988 | #endif /* CIFS_DEBUG2 */ | |
82940a46 SF |
1989 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { |
1990 | cFYI(1,("setting capabilities failed")); | |
ac67055e | 1991 | } |
1da177e4 LT |
1992 | } |
1993 | } | |
3e84469d SF |
1994 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
1995 | cifs_sb->wsize = min(cifs_sb->wsize, | |
1996 | (tcon->ses->server->maxBuf - | |
1997 | MAX_CIFS_HDR_SIZE)); | |
0ae0efad SF |
1998 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
1999 | cifs_sb->rsize = min(cifs_sb->rsize, | |
2000 | (tcon->ses->server->maxBuf - | |
2001 | MAX_CIFS_HDR_SIZE)); | |
1da177e4 LT |
2002 | } |
2003 | ||
2004 | /* volume_info.password is freed above when existing session found | |
2005 | (in which case it is not needed anymore) but when new sesion is created | |
2006 | the password ptr is put in the new session structure (in which case the | |
2007 | password will be freed at unmount time) */ | |
f99d49ad | 2008 | kfree(volume_info.UNC); |
1da177e4 LT |
2009 | FreeXid(xid); |
2010 | return rc; | |
2011 | } | |
2012 | ||
2013 | static int | |
2014 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 2015 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
2016 | const struct nls_table *nls_codepage) |
2017 | { | |
2018 | struct smb_hdr *smb_buffer; | |
2019 | struct smb_hdr *smb_buffer_response; | |
2020 | SESSION_SETUP_ANDX *pSMB; | |
2021 | SESSION_SETUP_ANDX *pSMBr; | |
2022 | char *bcc_ptr; | |
2023 | char *user; | |
2024 | char *domain; | |
2025 | int rc = 0; | |
2026 | int remaining_words = 0; | |
2027 | int bytes_returned = 0; | |
2028 | int len; | |
2029 | __u32 capabilities; | |
2030 | __u16 count; | |
2031 | ||
eeac8047 | 2032 | cFYI(1, ("In sesssetup")); |
1da177e4 LT |
2033 | if(ses == NULL) |
2034 | return -EINVAL; | |
2035 | user = ses->userName; | |
2036 | domain = ses->domainName; | |
2037 | smb_buffer = cifs_buf_get(); | |
2038 | if (smb_buffer == NULL) { | |
2039 | return -ENOMEM; | |
2040 | } | |
2041 | smb_buffer_response = smb_buffer; | |
2042 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2043 | ||
2044 | /* send SMBsessionSetup here */ | |
2045 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2046 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2047 | ||
1982c344 | 2048 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2049 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2050 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2051 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2052 | ||
2053 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2054 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2055 | ||
2056 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2057 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2058 | if (ses->capabilities & CAP_UNICODE) { | |
2059 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2060 | capabilities |= CAP_UNICODE; | |
2061 | } | |
2062 | if (ses->capabilities & CAP_STATUS32) { | |
2063 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2064 | capabilities |= CAP_STATUS32; | |
2065 | } | |
2066 | if (ses->capabilities & CAP_DFS) { | |
2067 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2068 | capabilities |= CAP_DFS; | |
2069 | } | |
2070 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2071 | ||
2072 | pSMB->req_no_secext.CaseInsensitivePasswordLength = | |
7c7b25bc | 2073 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2074 | |
2075 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2076 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2077 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2078 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2079 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2080 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2081 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2082 | |
2083 | if (ses->capabilities & CAP_UNICODE) { | |
2084 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2085 | *bcc_ptr = 0; | |
2086 | bcc_ptr++; | |
2087 | } | |
2088 | if(user == NULL) | |
3979877e | 2089 | bytes_returned = 0; /* skip null user */ |
1da177e4 LT |
2090 | else |
2091 | bytes_returned = | |
e89dc920 | 2092 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2093 | nls_codepage); |
2094 | /* convert number of 16 bit words to bytes */ | |
2095 | bcc_ptr += 2 * bytes_returned; | |
2096 | bcc_ptr += 2; /* trailing null */ | |
2097 | if (domain == NULL) | |
2098 | bytes_returned = | |
e89dc920 | 2099 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2100 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2101 | else | |
2102 | bytes_returned = | |
e89dc920 | 2103 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2104 | nls_codepage); |
2105 | bcc_ptr += 2 * bytes_returned; | |
2106 | bcc_ptr += 2; | |
2107 | bytes_returned = | |
e89dc920 | 2108 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2109 | 32, nls_codepage); |
2110 | bcc_ptr += 2 * bytes_returned; | |
2111 | bytes_returned = | |
e89dc920 | 2112 | cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release, |
1da177e4 LT |
2113 | 32, nls_codepage); |
2114 | bcc_ptr += 2 * bytes_returned; | |
2115 | bcc_ptr += 2; | |
2116 | bytes_returned = | |
e89dc920 | 2117 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2118 | 64, nls_codepage); |
2119 | bcc_ptr += 2 * bytes_returned; | |
2120 | bcc_ptr += 2; | |
2121 | } else { | |
2122 | if(user != NULL) { | |
2123 | strncpy(bcc_ptr, user, 200); | |
2124 | bcc_ptr += strnlen(user, 200); | |
2125 | } | |
2126 | *bcc_ptr = 0; | |
2127 | bcc_ptr++; | |
2128 | if (domain == NULL) { | |
2129 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2130 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2131 | } else { | |
2132 | strncpy(bcc_ptr, domain, 64); | |
2133 | bcc_ptr += strnlen(domain, 64); | |
2134 | *bcc_ptr = 0; | |
2135 | bcc_ptr++; | |
2136 | } | |
2137 | strcpy(bcc_ptr, "Linux version "); | |
2138 | bcc_ptr += strlen("Linux version "); | |
2139 | strcpy(bcc_ptr, system_utsname.release); | |
2140 | bcc_ptr += strlen(system_utsname.release) + 1; | |
2141 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
2142 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2143 | } | |
2144 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2145 | smb_buffer->smb_buf_length += count; | |
2146 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2147 | ||
2148 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2149 | &bytes_returned, 1); | |
2150 | if (rc) { | |
2151 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2152 | } else if ((smb_buffer_response->WordCount == 3) | |
2153 | || (smb_buffer_response->WordCount == 4)) { | |
2154 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2155 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2156 | if (action & GUEST_LOGIN) | |
2157 | cFYI(1, (" Guest login")); /* do we want to mark SesInfo struct ? */ | |
2158 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format (le) */ | |
2159 | cFYI(1, ("UID = %d ", ses->Suid)); | |
2160 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2161 | bcc_ptr = pByteArea(smb_buffer_response); | |
2162 | if ((pSMBr->resp.hdr.WordCount == 3) | |
2163 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2164 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2165 | if (pSMBr->resp.hdr.WordCount == 4) | |
2166 | bcc_ptr += blob_len; | |
2167 | ||
2168 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2169 | if ((long) (bcc_ptr) % 2) { | |
2170 | remaining_words = | |
2171 | (BCC(smb_buffer_response) - 1) /2; | |
2172 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2173 | } else { | |
2174 | remaining_words = | |
2175 | BCC(smb_buffer_response) / 2; | |
2176 | } | |
2177 | len = | |
2178 | UniStrnlen((wchar_t *) bcc_ptr, | |
2179 | remaining_words - 1); | |
2180 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2181 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2182 | terminating last Unicode string in response */ | |
a424f8bf SF |
2183 | if(ses->serverOS) |
2184 | kfree(ses->serverOS); | |
e915fc49 | 2185 | ses->serverOS = kzalloc(2 * (len + 1), GFP_KERNEL); |
433dc24f SF |
2186 | if(ses->serverOS == NULL) |
2187 | goto sesssetup_nomem; | |
1da177e4 | 2188 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2189 | (__le16 *)bcc_ptr, len,nls_codepage); |
1da177e4 LT |
2190 | bcc_ptr += 2 * (len + 1); |
2191 | remaining_words -= len + 1; | |
2192 | ses->serverOS[2 * len] = 0; | |
2193 | ses->serverOS[1 + (2 * len)] = 0; | |
2194 | if (remaining_words > 0) { | |
2195 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2196 | remaining_words-1); | |
cd49b492 | 2197 | kfree(ses->serverNOS); |
e915fc49 | 2198 | ses->serverNOS = kzalloc(2 * (len + 1),GFP_KERNEL); |
433dc24f SF |
2199 | if(ses->serverNOS == NULL) |
2200 | goto sesssetup_nomem; | |
1da177e4 | 2201 | cifs_strfromUCS_le(ses->serverNOS, |
e89dc920 | 2202 | (__le16 *)bcc_ptr,len,nls_codepage); |
1da177e4 LT |
2203 | bcc_ptr += 2 * (len + 1); |
2204 | ses->serverNOS[2 * len] = 0; | |
2205 | ses->serverNOS[1 + (2 * len)] = 0; | |
2206 | if(strncmp(ses->serverNOS, | |
2207 | "NT LAN Manager 4",16) == 0) { | |
2208 | cFYI(1,("NT4 server")); | |
2209 | ses->flags |= CIFS_SES_NT4; | |
2210 | } | |
2211 | remaining_words -= len + 1; | |
2212 | if (remaining_words > 0) { | |
433dc24f | 2213 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 2214 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ |
a424f8bf SF |
2215 | if(ses->serverDomain) |
2216 | kfree(ses->serverDomain); | |
1da177e4 | 2217 | ses->serverDomain = |
e915fc49 | 2218 | kzalloc(2*(len+1),GFP_KERNEL); |
433dc24f SF |
2219 | if(ses->serverDomain == NULL) |
2220 | goto sesssetup_nomem; | |
1da177e4 | 2221 | cifs_strfromUCS_le(ses->serverDomain, |
e89dc920 | 2222 | (__le16 *)bcc_ptr,len,nls_codepage); |
1da177e4 LT |
2223 | bcc_ptr += 2 * (len + 1); |
2224 | ses->serverDomain[2*len] = 0; | |
2225 | ses->serverDomain[1+(2*len)] = 0; | |
2226 | } /* else no more room so create dummy domain string */ | |
a424f8bf SF |
2227 | else { |
2228 | if(ses->serverDomain) | |
2229 | kfree(ses->serverDomain); | |
433dc24f | 2230 | ses->serverDomain = |
e915fc49 | 2231 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2232 | } |
1da177e4 | 2233 | } else { /* no room so create dummy domain and NOS string */ |
433dc24f SF |
2234 | /* if these kcallocs fail not much we |
2235 | can do, but better to not fail the | |
2236 | sesssetup itself */ | |
cd49b492 | 2237 | kfree(ses->serverDomain); |
1da177e4 | 2238 | ses->serverDomain = |
e915fc49 | 2239 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2240 | kfree(ses->serverNOS); |
1da177e4 | 2241 | ses->serverNOS = |
e915fc49 | 2242 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2243 | } |
2244 | } else { /* ASCII */ | |
2245 | len = strnlen(bcc_ptr, 1024); | |
2246 | if (((long) bcc_ptr + len) - (long) | |
2247 | pByteArea(smb_buffer_response) | |
2248 | <= BCC(smb_buffer_response)) { | |
cd49b492 | 2249 | kfree(ses->serverOS); |
e915fc49 | 2250 | ses->serverOS = kzalloc(len + 1,GFP_KERNEL); |
433dc24f SF |
2251 | if(ses->serverOS == NULL) |
2252 | goto sesssetup_nomem; | |
1da177e4 LT |
2253 | strncpy(ses->serverOS,bcc_ptr, len); |
2254 | ||
2255 | bcc_ptr += len; | |
2256 | bcc_ptr[0] = 0; /* null terminate the string */ | |
2257 | bcc_ptr++; | |
2258 | ||
2259 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2260 | kfree(ses->serverNOS); |
e915fc49 | 2261 | ses->serverNOS = kzalloc(len + 1,GFP_KERNEL); |
433dc24f SF |
2262 | if(ses->serverNOS == NULL) |
2263 | goto sesssetup_nomem; | |
1da177e4 LT |
2264 | strncpy(ses->serverNOS, bcc_ptr, len); |
2265 | bcc_ptr += len; | |
2266 | bcc_ptr[0] = 0; | |
2267 | bcc_ptr++; | |
2268 | ||
2269 | len = strnlen(bcc_ptr, 1024); | |
a424f8bf SF |
2270 | if(ses->serverDomain) |
2271 | kfree(ses->serverDomain); | |
e915fc49 | 2272 | ses->serverDomain = kzalloc(len + 1,GFP_KERNEL); |
433dc24f SF |
2273 | if(ses->serverDomain == NULL) |
2274 | goto sesssetup_nomem; | |
1da177e4 LT |
2275 | strncpy(ses->serverDomain, bcc_ptr, len); |
2276 | bcc_ptr += len; | |
2277 | bcc_ptr[0] = 0; | |
2278 | bcc_ptr++; | |
2279 | } else | |
2280 | cFYI(1, | |
2281 | ("Variable field of length %d extends beyond end of smb ", | |
2282 | len)); | |
2283 | } | |
2284 | } else { | |
2285 | cERROR(1, | |
2286 | (" Security Blob Length extends beyond end of SMB")); | |
2287 | } | |
2288 | } else { | |
2289 | cERROR(1, | |
2290 | (" Invalid Word count %d: ", | |
2291 | smb_buffer_response->WordCount)); | |
2292 | rc = -EIO; | |
2293 | } | |
433dc24f SF |
2294 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2295 | since that could make reconnection harder, and | |
2296 | reconnection might be needed to free memory */ | |
1da177e4 LT |
2297 | if (smb_buffer) |
2298 | cifs_buf_release(smb_buffer); | |
2299 | ||
2300 | return rc; | |
2301 | } | |
2302 | ||
1da177e4 LT |
2303 | static int |
2304 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
2305 | struct cifsSesInfo *ses, int * pNTLMv2_flag, | |
2306 | const struct nls_table *nls_codepage) | |
2307 | { | |
2308 | struct smb_hdr *smb_buffer; | |
2309 | struct smb_hdr *smb_buffer_response; | |
2310 | SESSION_SETUP_ANDX *pSMB; | |
2311 | SESSION_SETUP_ANDX *pSMBr; | |
2312 | char *bcc_ptr; | |
2313 | char *domain; | |
2314 | int rc = 0; | |
2315 | int remaining_words = 0; | |
2316 | int bytes_returned = 0; | |
2317 | int len; | |
2318 | int SecurityBlobLength = sizeof (NEGOTIATE_MESSAGE); | |
2319 | PNEGOTIATE_MESSAGE SecurityBlob; | |
2320 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2321 | __u32 negotiate_flags, capabilities; | |
2322 | __u16 count; | |
2323 | ||
12b3b8ff | 2324 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
1da177e4 LT |
2325 | if(ses == NULL) |
2326 | return -EINVAL; | |
2327 | domain = ses->domainName; | |
2328 | *pNTLMv2_flag = FALSE; | |
2329 | smb_buffer = cifs_buf_get(); | |
2330 | if (smb_buffer == NULL) { | |
2331 | return -ENOMEM; | |
2332 | } | |
2333 | smb_buffer_response = smb_buffer; | |
2334 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2335 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2336 | ||
2337 | /* send SMBsessionSetup here */ | |
2338 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2339 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2340 | |
2341 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2342 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2343 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2344 | ||
2345 | pSMB->req.AndXCommand = 0xFF; | |
2346 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2347 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2348 | ||
2349 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2350 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2351 | ||
2352 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2353 | CAP_EXTENDED_SECURITY; | |
2354 | if (ses->capabilities & CAP_UNICODE) { | |
2355 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2356 | capabilities |= CAP_UNICODE; | |
2357 | } | |
2358 | if (ses->capabilities & CAP_STATUS32) { | |
2359 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2360 | capabilities |= CAP_STATUS32; | |
2361 | } | |
2362 | if (ses->capabilities & CAP_DFS) { | |
2363 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2364 | capabilities |= CAP_DFS; | |
2365 | } | |
2366 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2367 | ||
2368 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2369 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2370 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2371 | SecurityBlob->MessageType = NtLmNegotiate; | |
2372 | negotiate_flags = | |
2373 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2374 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2375 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 LT |
2376 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
2377 | if(sign_CIFS_PDUs) | |
2378 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; | |
3979877e SF |
2379 | /* if(ntlmv2_support) |
2380 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ | |
1da177e4 LT |
2381 | /* setup pointers to domain name and workstation name */ |
2382 | bcc_ptr += SecurityBlobLength; | |
2383 | ||
2384 | SecurityBlob->WorkstationName.Buffer = 0; | |
2385 | SecurityBlob->WorkstationName.Length = 0; | |
2386 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2387 | ||
12b3b8ff SF |
2388 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2389 | along with username on auth request (ie the response to challenge) */ | |
2390 | SecurityBlob->DomainName.Buffer = 0; | |
2391 | SecurityBlob->DomainName.Length = 0; | |
2392 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2393 | if (ses->capabilities & CAP_UNICODE) { |
2394 | if ((long) bcc_ptr % 2) { | |
2395 | *bcc_ptr = 0; | |
2396 | bcc_ptr++; | |
2397 | } | |
2398 | ||
2399 | bytes_returned = | |
e89dc920 | 2400 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2401 | 32, nls_codepage); |
2402 | bcc_ptr += 2 * bytes_returned; | |
2403 | bytes_returned = | |
e89dc920 | 2404 | cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release, 32, |
1da177e4 LT |
2405 | nls_codepage); |
2406 | bcc_ptr += 2 * bytes_returned; | |
2407 | bcc_ptr += 2; /* null terminate Linux version */ | |
2408 | bytes_returned = | |
e89dc920 | 2409 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2410 | 64, nls_codepage); |
2411 | bcc_ptr += 2 * bytes_returned; | |
2412 | *(bcc_ptr + 1) = 0; | |
2413 | *(bcc_ptr + 2) = 0; | |
2414 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2415 | *(bcc_ptr + 1) = 0; | |
2416 | *(bcc_ptr + 2) = 0; | |
2417 | bcc_ptr += 2; /* null domain */ | |
2418 | } else { /* ASCII */ | |
2419 | strcpy(bcc_ptr, "Linux version "); | |
2420 | bcc_ptr += strlen("Linux version "); | |
2421 | strcpy(bcc_ptr, system_utsname.release); | |
2422 | bcc_ptr += strlen(system_utsname.release) + 1; | |
2423 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
2424 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2425 | bcc_ptr++; /* empty domain field */ | |
2426 | *bcc_ptr = 0; | |
2427 | } | |
2428 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2429 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2430 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2431 | smb_buffer->smb_buf_length += count; | |
2432 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2433 | ||
2434 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2435 | &bytes_returned, 1); | |
2436 | ||
2437 | if (smb_buffer_response->Status.CifsError == | |
2438 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2439 | rc = 0; | |
2440 | ||
2441 | if (rc) { | |
2442 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2443 | } else if ((smb_buffer_response->WordCount == 3) | |
2444 | || (smb_buffer_response->WordCount == 4)) { | |
2445 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2446 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2447 | ||
2448 | if (action & GUEST_LOGIN) | |
2449 | cFYI(1, (" Guest login")); | |
2450 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
2451 | ||
2452 | bcc_ptr = pByteArea(smb_buffer_response); | |
2453 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2454 | ||
2455 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2456 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2457 | cFYI(1, | |
2458 | ("Unexpected NTLMSSP message type received %d", | |
2459 | SecurityBlob2->MessageType)); | |
2460 | } else if (ses) { | |
2461 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ | |
12b3b8ff | 2462 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2463 | if ((pSMBr->resp.hdr.WordCount == 3) |
2464 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2465 | && (blob_len < | |
2466 | pSMBr->resp.ByteCount))) { | |
2467 | ||
2468 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2469 | bcc_ptr += blob_len; | |
12b3b8ff | 2470 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2471 | blob_len)); |
2472 | } | |
2473 | ||
12b3b8ff | 2474 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2475 | |
2476 | memcpy(ses->server->cryptKey, | |
2477 | SecurityBlob2->Challenge, | |
2478 | CIFS_CRYPTO_KEY_SIZE); | |
12b3b8ff SF |
2479 | if(SecurityBlob2->NegotiateFlags & |
2480 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) | |
1da177e4 LT |
2481 | *pNTLMv2_flag = TRUE; |
2482 | ||
2483 | if((SecurityBlob2->NegotiateFlags & | |
2484 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
2485 | || (sign_CIFS_PDUs > 1)) | |
2486 | ses->server->secMode |= | |
2487 | SECMODE_SIGN_REQUIRED; | |
2488 | if ((SecurityBlob2->NegotiateFlags & | |
2489 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) | |
2490 | ses->server->secMode |= | |
2491 | SECMODE_SIGN_ENABLED; | |
2492 | ||
2493 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2494 | if ((long) (bcc_ptr) % 2) { | |
2495 | remaining_words = | |
2496 | (BCC(smb_buffer_response) | |
2497 | - 1) / 2; | |
2498 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2499 | } else { | |
2500 | remaining_words = | |
2501 | BCC | |
2502 | (smb_buffer_response) / 2; | |
2503 | } | |
2504 | len = | |
2505 | UniStrnlen((wchar_t *) bcc_ptr, | |
2506 | remaining_words - 1); | |
2507 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2508 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2509 | terminating last Unicode string in response */ | |
a424f8bf SF |
2510 | if(ses->serverOS) |
2511 | kfree(ses->serverOS); | |
1da177e4 | 2512 | ses->serverOS = |
e915fc49 | 2513 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2514 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2515 | (__le16 *) |
1da177e4 LT |
2516 | bcc_ptr, len, |
2517 | nls_codepage); | |
2518 | bcc_ptr += 2 * (len + 1); | |
2519 | remaining_words -= len + 1; | |
2520 | ses->serverOS[2 * len] = 0; | |
2521 | ses->serverOS[1 + (2 * len)] = 0; | |
2522 | if (remaining_words > 0) { | |
2523 | len = UniStrnlen((wchar_t *) | |
2524 | bcc_ptr, | |
2525 | remaining_words | |
2526 | - 1); | |
cd49b492 | 2527 | kfree(ses->serverNOS); |
1da177e4 | 2528 | ses->serverNOS = |
e915fc49 | 2529 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2530 | GFP_KERNEL); |
2531 | cifs_strfromUCS_le(ses-> | |
2532 | serverNOS, | |
e89dc920 | 2533 | (__le16 *) |
1da177e4 LT |
2534 | bcc_ptr, |
2535 | len, | |
2536 | nls_codepage); | |
2537 | bcc_ptr += 2 * (len + 1); | |
2538 | ses->serverNOS[2 * len] = 0; | |
2539 | ses->serverNOS[1 + | |
2540 | (2 * len)] = 0; | |
2541 | remaining_words -= len + 1; | |
2542 | if (remaining_words > 0) { | |
2543 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
2544 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ | |
cd49b492 | 2545 | kfree(ses->serverDomain); |
1da177e4 | 2546 | ses->serverDomain = |
e915fc49 | 2547 | kzalloc(2 * |
1da177e4 LT |
2548 | (len + |
2549 | 1), | |
2550 | GFP_KERNEL); | |
2551 | cifs_strfromUCS_le | |
e89dc920 SF |
2552 | (ses->serverDomain, |
2553 | (__le16 *)bcc_ptr, | |
2554 | len, nls_codepage); | |
1da177e4 LT |
2555 | bcc_ptr += |
2556 | 2 * (len + 1); | |
e89dc920 | 2557 | ses->serverDomain[2*len] |
1da177e4 | 2558 | = 0; |
e89dc920 SF |
2559 | ses->serverDomain |
2560 | [1 + (2 * len)] | |
1da177e4 LT |
2561 | = 0; |
2562 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 2563 | else { |
cd49b492 | 2564 | kfree(ses->serverDomain); |
1da177e4 | 2565 | ses->serverDomain = |
e915fc49 | 2566 | kzalloc(2, |
1da177e4 | 2567 | GFP_KERNEL); |
a424f8bf | 2568 | } |
1da177e4 | 2569 | } else { /* no room so create dummy domain and NOS string */ |
cd49b492 | 2570 | kfree(ses->serverDomain); |
1da177e4 | 2571 | ses->serverDomain = |
e915fc49 | 2572 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2573 | kfree(ses->serverNOS); |
1da177e4 | 2574 | ses->serverNOS = |
e915fc49 | 2575 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2576 | } |
2577 | } else { /* ASCII */ | |
2578 | len = strnlen(bcc_ptr, 1024); | |
2579 | if (((long) bcc_ptr + len) - (long) | |
2580 | pByteArea(smb_buffer_response) | |
2581 | <= BCC(smb_buffer_response)) { | |
a424f8bf SF |
2582 | if(ses->serverOS) |
2583 | kfree(ses->serverOS); | |
1da177e4 | 2584 | ses->serverOS = |
e915fc49 | 2585 | kzalloc(len + 1, |
1da177e4 LT |
2586 | GFP_KERNEL); |
2587 | strncpy(ses->serverOS, | |
2588 | bcc_ptr, len); | |
2589 | ||
2590 | bcc_ptr += len; | |
2591 | bcc_ptr[0] = 0; /* null terminate string */ | |
2592 | bcc_ptr++; | |
2593 | ||
2594 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2595 | kfree(ses->serverNOS); |
1da177e4 | 2596 | ses->serverNOS = |
e915fc49 | 2597 | kzalloc(len + 1, |
1da177e4 LT |
2598 | GFP_KERNEL); |
2599 | strncpy(ses->serverNOS, bcc_ptr, len); | |
2600 | bcc_ptr += len; | |
2601 | bcc_ptr[0] = 0; | |
2602 | bcc_ptr++; | |
2603 | ||
2604 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2605 | kfree(ses->serverDomain); |
1da177e4 | 2606 | ses->serverDomain = |
e915fc49 | 2607 | kzalloc(len + 1, |
1da177e4 LT |
2608 | GFP_KERNEL); |
2609 | strncpy(ses->serverDomain, bcc_ptr, len); | |
2610 | bcc_ptr += len; | |
2611 | bcc_ptr[0] = 0; | |
2612 | bcc_ptr++; | |
2613 | } else | |
2614 | cFYI(1, | |
12b3b8ff | 2615 | ("Variable field of length %d extends beyond end of smb", |
1da177e4 LT |
2616 | len)); |
2617 | } | |
2618 | } else { | |
2619 | cERROR(1, | |
2620 | (" Security Blob Length extends beyond end of SMB")); | |
2621 | } | |
2622 | } else { | |
2623 | cERROR(1, ("No session structure passed in.")); | |
2624 | } | |
2625 | } else { | |
2626 | cERROR(1, | |
5815449d | 2627 | (" Invalid Word count %d:", |
1da177e4 LT |
2628 | smb_buffer_response->WordCount)); |
2629 | rc = -EIO; | |
2630 | } | |
2631 | ||
2632 | if (smb_buffer) | |
2633 | cifs_buf_release(smb_buffer); | |
2634 | ||
2635 | return rc; | |
2636 | } | |
2637 | static int | |
2638 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
2639 | char *ntlm_session_key, int ntlmv2_flag, | |
2640 | const struct nls_table *nls_codepage) | |
2641 | { | |
2642 | struct smb_hdr *smb_buffer; | |
2643 | struct smb_hdr *smb_buffer_response; | |
2644 | SESSION_SETUP_ANDX *pSMB; | |
2645 | SESSION_SETUP_ANDX *pSMBr; | |
2646 | char *bcc_ptr; | |
2647 | char *user; | |
2648 | char *domain; | |
2649 | int rc = 0; | |
2650 | int remaining_words = 0; | |
2651 | int bytes_returned = 0; | |
2652 | int len; | |
2653 | int SecurityBlobLength = sizeof (AUTHENTICATE_MESSAGE); | |
2654 | PAUTHENTICATE_MESSAGE SecurityBlob; | |
2655 | __u32 negotiate_flags, capabilities; | |
2656 | __u16 count; | |
2657 | ||
2658 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
2659 | if(ses == NULL) | |
2660 | return -EINVAL; | |
2661 | user = ses->userName; | |
2662 | domain = ses->domainName; | |
2663 | smb_buffer = cifs_buf_get(); | |
2664 | if (smb_buffer == NULL) { | |
2665 | return -ENOMEM; | |
2666 | } | |
2667 | smb_buffer_response = smb_buffer; | |
2668 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2669 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2670 | ||
2671 | /* send SMBsessionSetup here */ | |
2672 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2673 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2674 | |
2675 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2676 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
2677 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2678 | pSMB->req.AndXCommand = 0xFF; | |
2679 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2680 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2681 | ||
2682 | pSMB->req.hdr.Uid = ses->Suid; | |
2683 | ||
2684 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2685 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2686 | ||
2687 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2688 | CAP_EXTENDED_SECURITY; | |
2689 | if (ses->capabilities & CAP_UNICODE) { | |
2690 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2691 | capabilities |= CAP_UNICODE; | |
2692 | } | |
2693 | if (ses->capabilities & CAP_STATUS32) { | |
2694 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2695 | capabilities |= CAP_STATUS32; | |
2696 | } | |
2697 | if (ses->capabilities & CAP_DFS) { | |
2698 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2699 | capabilities |= CAP_DFS; | |
2700 | } | |
2701 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2702 | ||
2703 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2704 | SecurityBlob = (PAUTHENTICATE_MESSAGE) bcc_ptr; | |
2705 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2706 | SecurityBlob->MessageType = NtLmAuthenticate; | |
2707 | bcc_ptr += SecurityBlobLength; | |
2708 | negotiate_flags = | |
2709 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | | |
2710 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
2711 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
2712 | if(sign_CIFS_PDUs) | |
2713 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; | |
2714 | if(ntlmv2_flag) | |
2715 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; | |
2716 | ||
2717 | /* setup pointers to domain name and workstation name */ | |
2718 | ||
2719 | SecurityBlob->WorkstationName.Buffer = 0; | |
2720 | SecurityBlob->WorkstationName.Length = 0; | |
2721 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2722 | SecurityBlob->SessionKey.Length = 0; | |
2723 | SecurityBlob->SessionKey.MaximumLength = 0; | |
2724 | SecurityBlob->SessionKey.Buffer = 0; | |
2725 | ||
2726 | SecurityBlob->LmChallengeResponse.Length = 0; | |
2727 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
2728 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
2729 | ||
2730 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 2731 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2732 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
2733 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
2734 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
2735 | SecurityBlob->NtChallengeResponse.Buffer = |
2736 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
2737 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
2738 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2739 | |
2740 | if (ses->capabilities & CAP_UNICODE) { | |
2741 | if (domain == NULL) { | |
2742 | SecurityBlob->DomainName.Buffer = 0; | |
2743 | SecurityBlob->DomainName.Length = 0; | |
2744 | SecurityBlob->DomainName.MaximumLength = 0; | |
2745 | } else { | |
2746 | __u16 len = | |
e89dc920 | 2747 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2748 | nls_codepage); |
2749 | len *= 2; | |
2750 | SecurityBlob->DomainName.MaximumLength = | |
2751 | cpu_to_le16(len); | |
2752 | SecurityBlob->DomainName.Buffer = | |
2753 | cpu_to_le32(SecurityBlobLength); | |
2754 | bcc_ptr += len; | |
2755 | SecurityBlobLength += len; | |
2756 | SecurityBlob->DomainName.Length = | |
2757 | cpu_to_le16(len); | |
2758 | } | |
2759 | if (user == NULL) { | |
2760 | SecurityBlob->UserName.Buffer = 0; | |
2761 | SecurityBlob->UserName.Length = 0; | |
2762 | SecurityBlob->UserName.MaximumLength = 0; | |
2763 | } else { | |
2764 | __u16 len = | |
e89dc920 | 2765 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 LT |
2766 | nls_codepage); |
2767 | len *= 2; | |
2768 | SecurityBlob->UserName.MaximumLength = | |
2769 | cpu_to_le16(len); | |
2770 | SecurityBlob->UserName.Buffer = | |
2771 | cpu_to_le32(SecurityBlobLength); | |
2772 | bcc_ptr += len; | |
2773 | SecurityBlobLength += len; | |
2774 | SecurityBlob->UserName.Length = | |
2775 | cpu_to_le16(len); | |
2776 | } | |
2777 | ||
e89dc920 | 2778 | /* SecurityBlob->WorkstationName.Length = cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); |
1da177e4 LT |
2779 | SecurityBlob->WorkstationName.Length *= 2; |
2780 | SecurityBlob->WorkstationName.MaximumLength = cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
2781 | SecurityBlob->WorkstationName.Buffer = cpu_to_le32(SecurityBlobLength); | |
2782 | bcc_ptr += SecurityBlob->WorkstationName.Length; | |
2783 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
2784 | SecurityBlob->WorkstationName.Length = cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
2785 | ||
2786 | if ((long) bcc_ptr % 2) { | |
2787 | *bcc_ptr = 0; | |
2788 | bcc_ptr++; | |
2789 | } | |
2790 | bytes_returned = | |
e89dc920 | 2791 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2792 | 32, nls_codepage); |
2793 | bcc_ptr += 2 * bytes_returned; | |
2794 | bytes_returned = | |
e89dc920 | 2795 | cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release, 32, |
1da177e4 LT |
2796 | nls_codepage); |
2797 | bcc_ptr += 2 * bytes_returned; | |
2798 | bcc_ptr += 2; /* null term version string */ | |
2799 | bytes_returned = | |
e89dc920 | 2800 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2801 | 64, nls_codepage); |
2802 | bcc_ptr += 2 * bytes_returned; | |
2803 | *(bcc_ptr + 1) = 0; | |
2804 | *(bcc_ptr + 2) = 0; | |
2805 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2806 | *(bcc_ptr + 1) = 0; | |
2807 | *(bcc_ptr + 2) = 0; | |
2808 | bcc_ptr += 2; /* null domain */ | |
2809 | } else { /* ASCII */ | |
2810 | if (domain == NULL) { | |
2811 | SecurityBlob->DomainName.Buffer = 0; | |
2812 | SecurityBlob->DomainName.Length = 0; | |
2813 | SecurityBlob->DomainName.MaximumLength = 0; | |
2814 | } else { | |
2815 | __u16 len; | |
2816 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; | |
2817 | strncpy(bcc_ptr, domain, 63); | |
2818 | len = strnlen(domain, 64); | |
2819 | SecurityBlob->DomainName.MaximumLength = | |
2820 | cpu_to_le16(len); | |
2821 | SecurityBlob->DomainName.Buffer = | |
2822 | cpu_to_le32(SecurityBlobLength); | |
2823 | bcc_ptr += len; | |
2824 | SecurityBlobLength += len; | |
2825 | SecurityBlob->DomainName.Length = cpu_to_le16(len); | |
2826 | } | |
2827 | if (user == NULL) { | |
2828 | SecurityBlob->UserName.Buffer = 0; | |
2829 | SecurityBlob->UserName.Length = 0; | |
2830 | SecurityBlob->UserName.MaximumLength = 0; | |
2831 | } else { | |
2832 | __u16 len; | |
2833 | strncpy(bcc_ptr, user, 63); | |
2834 | len = strnlen(user, 64); | |
2835 | SecurityBlob->UserName.MaximumLength = | |
2836 | cpu_to_le16(len); | |
2837 | SecurityBlob->UserName.Buffer = | |
2838 | cpu_to_le32(SecurityBlobLength); | |
2839 | bcc_ptr += len; | |
2840 | SecurityBlobLength += len; | |
2841 | SecurityBlob->UserName.Length = cpu_to_le16(len); | |
2842 | } | |
2843 | /* BB fill in our workstation name if known BB */ | |
2844 | ||
2845 | strcpy(bcc_ptr, "Linux version "); | |
2846 | bcc_ptr += strlen("Linux version "); | |
2847 | strcpy(bcc_ptr, system_utsname.release); | |
2848 | bcc_ptr += strlen(system_utsname.release) + 1; | |
2849 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
2850 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2851 | bcc_ptr++; /* null domain */ | |
2852 | *bcc_ptr = 0; | |
2853 | } | |
2854 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2855 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2856 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2857 | smb_buffer->smb_buf_length += count; | |
2858 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2859 | ||
2860 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2861 | &bytes_returned, 1); | |
2862 | if (rc) { | |
2863 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2864 | } else if ((smb_buffer_response->WordCount == 3) | |
2865 | || (smb_buffer_response->WordCount == 4)) { | |
2866 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2867 | __u16 blob_len = | |
2868 | le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2869 | if (action & GUEST_LOGIN) | |
2870 | cFYI(1, (" Guest login")); /* BB do we want to set anything in SesInfo struct ? */ | |
2871 | /* if(SecurityBlob2->MessageType != NtLm??){ | |
2872 | cFYI("Unexpected message type on auth response is %d ")); | |
2873 | } */ | |
2874 | if (ses) { | |
2875 | cFYI(1, | |
2876 | ("Does UID on challenge %d match auth response UID %d ", | |
2877 | ses->Suid, smb_buffer_response->Uid)); | |
2878 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format */ | |
2879 | bcc_ptr = pByteArea(smb_buffer_response); | |
2880 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2881 | if ((pSMBr->resp.hdr.WordCount == 3) | |
2882 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2883 | && (blob_len < | |
2884 | pSMBr->resp.ByteCount))) { | |
2885 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2886 | bcc_ptr += | |
2887 | blob_len; | |
2888 | cFYI(1, | |
2889 | ("Security Blob Length %d ", | |
2890 | blob_len)); | |
2891 | } | |
2892 | ||
2893 | cFYI(1, | |
2894 | ("NTLMSSP response to Authenticate ")); | |
2895 | ||
2896 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2897 | if ((long) (bcc_ptr) % 2) { | |
2898 | remaining_words = | |
2899 | (BCC(smb_buffer_response) | |
2900 | - 1) / 2; | |
2901 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2902 | } else { | |
2903 | remaining_words = BCC(smb_buffer_response) / 2; | |
2904 | } | |
2905 | len = | |
2906 | UniStrnlen((wchar_t *) bcc_ptr,remaining_words - 1); | |
2907 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2908 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2909 | terminating last Unicode string in response */ | |
a424f8bf | 2910 | if(ses->serverOS) |
08775834 | 2911 | kfree(ses->serverOS); |
1da177e4 | 2912 | ses->serverOS = |
e915fc49 | 2913 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2914 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2915 | (__le16 *) |
1da177e4 LT |
2916 | bcc_ptr, len, |
2917 | nls_codepage); | |
2918 | bcc_ptr += 2 * (len + 1); | |
2919 | remaining_words -= len + 1; | |
2920 | ses->serverOS[2 * len] = 0; | |
2921 | ses->serverOS[1 + (2 * len)] = 0; | |
2922 | if (remaining_words > 0) { | |
2923 | len = UniStrnlen((wchar_t *) | |
2924 | bcc_ptr, | |
2925 | remaining_words | |
2926 | - 1); | |
cd49b492 | 2927 | kfree(ses->serverNOS); |
1da177e4 | 2928 | ses->serverNOS = |
e915fc49 | 2929 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2930 | GFP_KERNEL); |
2931 | cifs_strfromUCS_le(ses-> | |
2932 | serverNOS, | |
e89dc920 | 2933 | (__le16 *) |
1da177e4 LT |
2934 | bcc_ptr, |
2935 | len, | |
2936 | nls_codepage); | |
2937 | bcc_ptr += 2 * (len + 1); | |
2938 | ses->serverNOS[2 * len] = 0; | |
2939 | ses->serverNOS[1+(2*len)] = 0; | |
2940 | remaining_words -= len + 1; | |
2941 | if (remaining_words > 0) { | |
2942 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
2943 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ | |
a424f8bf SF |
2944 | if(ses->serverDomain) |
2945 | kfree(ses->serverDomain); | |
1da177e4 | 2946 | ses->serverDomain = |
e915fc49 | 2947 | kzalloc(2 * |
1da177e4 LT |
2948 | (len + |
2949 | 1), | |
2950 | GFP_KERNEL); | |
2951 | cifs_strfromUCS_le | |
2952 | (ses-> | |
2953 | serverDomain, | |
e89dc920 | 2954 | (__le16 *) |
1da177e4 LT |
2955 | bcc_ptr, len, |
2956 | nls_codepage); | |
2957 | bcc_ptr += | |
2958 | 2 * (len + 1); | |
2959 | ses-> | |
2960 | serverDomain[2 | |
2961 | * len] | |
2962 | = 0; | |
2963 | ses-> | |
2964 | serverDomain[1 | |
2965 | + | |
2966 | (2 | |
2967 | * | |
2968 | len)] | |
2969 | = 0; | |
2970 | } /* else no more room so create dummy domain string */ | |
a424f8bf SF |
2971 | else { |
2972 | if(ses->serverDomain) | |
2973 | kfree(ses->serverDomain); | |
e915fc49 | 2974 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 2975 | } |
1da177e4 | 2976 | } else { /* no room so create dummy domain and NOS string */ |
a424f8bf SF |
2977 | if(ses->serverDomain) |
2978 | kfree(ses->serverDomain); | |
e915fc49 | 2979 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 2980 | kfree(ses->serverNOS); |
e915fc49 | 2981 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2982 | } |
2983 | } else { /* ASCII */ | |
2984 | len = strnlen(bcc_ptr, 1024); | |
2985 | if (((long) bcc_ptr + len) - | |
2986 | (long) pByteArea(smb_buffer_response) | |
2987 | <= BCC(smb_buffer_response)) { | |
a424f8bf SF |
2988 | if(ses->serverOS) |
2989 | kfree(ses->serverOS); | |
e915fc49 | 2990 | ses->serverOS = kzalloc(len + 1,GFP_KERNEL); |
1da177e4 LT |
2991 | strncpy(ses->serverOS,bcc_ptr, len); |
2992 | ||
2993 | bcc_ptr += len; | |
2994 | bcc_ptr[0] = 0; /* null terminate the string */ | |
2995 | bcc_ptr++; | |
2996 | ||
2997 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2998 | kfree(ses->serverNOS); |
e915fc49 | 2999 | ses->serverNOS = kzalloc(len+1,GFP_KERNEL); |
1da177e4 LT |
3000 | strncpy(ses->serverNOS, bcc_ptr, len); |
3001 | bcc_ptr += len; | |
3002 | bcc_ptr[0] = 0; | |
3003 | bcc_ptr++; | |
3004 | ||
3005 | len = strnlen(bcc_ptr, 1024); | |
a424f8bf SF |
3006 | if(ses->serverDomain) |
3007 | kfree(ses->serverDomain); | |
e915fc49 | 3008 | ses->serverDomain = kzalloc(len+1,GFP_KERNEL); |
1da177e4 LT |
3009 | strncpy(ses->serverDomain, bcc_ptr, len); |
3010 | bcc_ptr += len; | |
3011 | bcc_ptr[0] = 0; | |
3012 | bcc_ptr++; | |
3013 | } else | |
3014 | cFYI(1, | |
3015 | ("Variable field of length %d extends beyond end of smb ", | |
3016 | len)); | |
3017 | } | |
3018 | } else { | |
3019 | cERROR(1, | |
3020 | (" Security Blob Length extends beyond end of SMB")); | |
3021 | } | |
3022 | } else { | |
3023 | cERROR(1, ("No session structure passed in.")); | |
3024 | } | |
3025 | } else { | |
3026 | cERROR(1, | |
3027 | (" Invalid Word count %d: ", | |
3028 | smb_buffer_response->WordCount)); | |
3029 | rc = -EIO; | |
3030 | } | |
3031 | ||
3032 | if (smb_buffer) | |
3033 | cifs_buf_release(smb_buffer); | |
3034 | ||
3035 | return rc; | |
3036 | } | |
3037 | ||
3038 | int | |
3039 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3040 | const char *tree, struct cifsTconInfo *tcon, | |
3041 | const struct nls_table *nls_codepage) | |
3042 | { | |
3043 | struct smb_hdr *smb_buffer; | |
3044 | struct smb_hdr *smb_buffer_response; | |
3045 | TCONX_REQ *pSMB; | |
3046 | TCONX_RSP *pSMBr; | |
3047 | unsigned char *bcc_ptr; | |
3048 | int rc = 0; | |
3049 | int length; | |
3050 | __u16 count; | |
3051 | ||
3052 | if (ses == NULL) | |
3053 | return -EIO; | |
3054 | ||
3055 | smb_buffer = cifs_buf_get(); | |
3056 | if (smb_buffer == NULL) { | |
3057 | return -ENOMEM; | |
3058 | } | |
3059 | smb_buffer_response = smb_buffer; | |
3060 | ||
3061 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3062 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3063 | |
3064 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3065 | smb_buffer->Uid = ses->Suid; |
3066 | pSMB = (TCONX_REQ *) smb_buffer; | |
3067 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3068 | ||
3069 | pSMB->AndXCommand = 0xFF; | |
3070 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3071 | bcc_ptr = &pSMB->Password[0]; |
eeac8047 SF |
3072 | if((ses->server->secMode) & SECMODE_USER) { |
3073 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ | |
7c7b25bc | 3074 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3075 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3076 | /* already aligned so no need to do it below */ |
eeac8047 | 3077 | } else { |
7c7b25bc | 3078 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3079 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3080 | specified as required (when that support is added to | |
3081 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3082 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3083 | by Samba (not sure whether other servers allow |
3084 | NTLMv2 password here) */ | |
7c7b25bc SF |
3085 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
3086 | if((extended_security & CIFSSEC_MAY_LANMAN) && | |
3087 | (ses->server->secType == LANMAN)) | |
3088 | calc_lanman_hash(ses, bcc_ptr); | |
3089 | else | |
3090 | #endif /* CIFS_WEAK_PW_HASH */ | |
eeac8047 SF |
3091 | SMBNTencrypt(ses->password, |
3092 | ses->server->cryptKey, | |
3093 | bcc_ptr); | |
3094 | ||
7c7b25bc SF |
3095 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
3096 | if(ses->capabilities & CAP_UNICODE) { | |
3097 | /* must align unicode strings */ | |
3098 | *bcc_ptr = 0; /* null byte password */ | |
3099 | bcc_ptr++; | |
3100 | } | |
eeac8047 | 3101 | } |
1da177e4 | 3102 | |
a878fb22 SF |
3103 | if(ses->server->secMode & |
3104 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
3105 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3106 | ||
3107 | if (ses->capabilities & CAP_STATUS32) { | |
3108 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3109 | } | |
3110 | if (ses->capabilities & CAP_DFS) { | |
3111 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3112 | } | |
3113 | if (ses->capabilities & CAP_UNICODE) { | |
3114 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3115 | length = | |
a878fb22 SF |
3116 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3117 | 6 /* max utf8 char length in bytes */ * | |
3118 | (/* server len*/ + 256 /* share len */), nls_codepage); | |
3119 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3120 | bcc_ptr += 2; /* skip trailing null */ |
3121 | } else { /* ASCII */ | |
1da177e4 LT |
3122 | strcpy(bcc_ptr, tree); |
3123 | bcc_ptr += strlen(tree) + 1; | |
3124 | } | |
3125 | strcpy(bcc_ptr, "?????"); | |
3126 | bcc_ptr += strlen("?????"); | |
3127 | bcc_ptr += 1; | |
3128 | count = bcc_ptr - &pSMB->Password[0]; | |
3129 | pSMB->hdr.smb_buf_length += count; | |
3130 | pSMB->ByteCount = cpu_to_le16(count); | |
3131 | ||
3132 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, 0); | |
3133 | ||
3134 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3135 | /* above now done in SendReceive */ | |
3136 | if ((rc == 0) && (tcon != NULL)) { | |
3137 | tcon->tidStatus = CifsGood; | |
3138 | tcon->tid = smb_buffer_response->Tid; | |
3139 | bcc_ptr = pByteArea(smb_buffer_response); | |
3140 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
3141 | /* skip service field (NB: this field is always ASCII) */ | |
3142 | bcc_ptr += length + 1; | |
3143 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); | |
3144 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3145 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3146 | if ((bcc_ptr + (2 * length)) - | |
3147 | pByteArea(smb_buffer_response) <= | |
3148 | BCC(smb_buffer_response)) { | |
f99d49ad | 3149 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3150 | tcon->nativeFileSystem = |
e915fc49 | 3151 | kzalloc(length + 2, GFP_KERNEL); |
1da177e4 | 3152 | cifs_strfromUCS_le(tcon->nativeFileSystem, |
e89dc920 | 3153 | (__le16 *) bcc_ptr, |
1da177e4 LT |
3154 | length, nls_codepage); |
3155 | bcc_ptr += 2 * length; | |
3156 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3157 | bcc_ptr[1] = 0; | |
3158 | bcc_ptr += 2; | |
3159 | } | |
3160 | /* else do not bother copying these informational fields */ | |
3161 | } else { | |
3162 | length = strnlen(bcc_ptr, 1024); | |
3163 | if ((bcc_ptr + length) - | |
3164 | pByteArea(smb_buffer_response) <= | |
3165 | BCC(smb_buffer_response)) { | |
f99d49ad | 3166 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3167 | tcon->nativeFileSystem = |
e915fc49 | 3168 | kzalloc(length + 1, GFP_KERNEL); |
1da177e4 LT |
3169 | strncpy(tcon->nativeFileSystem, bcc_ptr, |
3170 | length); | |
3171 | } | |
3172 | /* else do not bother copying these informational fields */ | |
3173 | } | |
3979877e SF |
3174 | if(smb_buffer_response->WordCount == 3) |
3175 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); | |
3176 | else | |
3177 | tcon->Flags = 0; | |
1da177e4 LT |
3178 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3179 | } else if ((rc == 0) && tcon == NULL) { | |
3180 | /* all we need to save for IPC$ connection */ | |
3181 | ses->ipc_tid = smb_buffer_response->Tid; | |
3182 | } | |
3183 | ||
3184 | if (smb_buffer) | |
3185 | cifs_buf_release(smb_buffer); | |
3186 | return rc; | |
3187 | } | |
3188 | ||
3189 | int | |
3190 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3191 | { | |
3192 | int rc = 0; | |
3193 | int xid; | |
3194 | struct cifsSesInfo *ses = NULL; | |
3195 | struct task_struct *cifsd_task; | |
3196 | ||
3197 | xid = GetXid(); | |
3198 | ||
3199 | if (cifs_sb->tcon) { | |
3200 | ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ | |
3201 | rc = CIFSSMBTDis(xid, cifs_sb->tcon); | |
3202 | if (rc == -EBUSY) { | |
3203 | FreeXid(xid); | |
3204 | return 0; | |
3205 | } | |
3206 | tconInfoFree(cifs_sb->tcon); | |
3207 | if ((ses) && (ses->server)) { | |
3208 | /* save off task so we do not refer to ses later */ | |
3209 | cifsd_task = ses->server->tsk; | |
3210 | cFYI(1, ("About to do SMBLogoff ")); | |
3211 | rc = CIFSSMBLogoff(xid, ses); | |
3212 | if (rc == -EBUSY) { | |
3213 | FreeXid(xid); | |
3214 | return 0; | |
3215 | } else if (rc == -ESHUTDOWN) { | |
3216 | cFYI(1,("Waking up socket by sending it signal")); | |
f191401f | 3217 | if(cifsd_task) { |
1da177e4 | 3218 | send_sig(SIGKILL,cifsd_task,1); |
f191401f SF |
3219 | wait_for_completion(&cifsd_complete); |
3220 | } | |
1da177e4 LT |
3221 | rc = 0; |
3222 | } /* else - we have an smb session | |
3223 | left on this socket do not kill cifsd */ | |
3224 | } else | |
3225 | cFYI(1, ("No session or bad tcon")); | |
3226 | } | |
3227 | ||
3228 | cifs_sb->tcon = NULL; | |
041e0e3b NA |
3229 | if (ses) |
3230 | schedule_timeout_interruptible(msecs_to_jiffies(500)); | |
1da177e4 LT |
3231 | if (ses) |
3232 | sesInfoFree(ses); | |
3233 | ||
3234 | FreeXid(xid); | |
3235 | return rc; /* BB check if we should always return zero here */ | |
3236 | } | |
3237 | ||
3238 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
3239 | struct nls_table * nls_info) | |
3240 | { | |
3241 | int rc = 0; | |
7c7b25bc | 3242 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
1da177e4 | 3243 | int ntlmv2_flag = FALSE; |
ad009ac9 | 3244 | int first_time = 0; |
1da177e4 LT |
3245 | |
3246 | /* what if server changes its buffer size after dropping the session? */ | |
3247 | if(pSesInfo->server->maxBuf == 0) /* no need to send on reconnect */ { | |
3248 | rc = CIFSSMBNegotiate(xid, pSesInfo); | |
3249 | if(rc == -EAGAIN) /* retry only once on 1st time connection */ { | |
3250 | rc = CIFSSMBNegotiate(xid, pSesInfo); | |
3251 | if(rc == -EAGAIN) | |
3252 | rc = -EHOSTDOWN; | |
3253 | } | |
3254 | if(rc == 0) { | |
3255 | spin_lock(&GlobalMid_Lock); | |
3256 | if(pSesInfo->server->tcpStatus != CifsExiting) | |
3257 | pSesInfo->server->tcpStatus = CifsGood; | |
3258 | else | |
3259 | rc = -EHOSTDOWN; | |
3260 | spin_unlock(&GlobalMid_Lock); | |
3261 | ||
3262 | } | |
ad009ac9 | 3263 | first_time = 1; |
1da177e4 LT |
3264 | } |
3265 | if (!rc) { | |
3266 | pSesInfo->capabilities = pSesInfo->server->capabilities; | |
3267 | if(linuxExtEnabled == 0) | |
3268 | pSesInfo->capabilities &= (~CAP_UNIX); | |
ad009ac9 | 3269 | /* pSesInfo->sequence_number = 0;*/ |
1da177e4 LT |
3270 | cFYI(1,("Security Mode: 0x%x Capabilities: 0x%x Time Zone: %d", |
3271 | pSesInfo->server->secMode, | |
3272 | pSesInfo->server->capabilities, | |
3273 | pSesInfo->server->timeZone)); | |
189acaae | 3274 | if(experimEnabled < 2) |
3979877e SF |
3275 | rc = CIFS_SessSetup(xid, pSesInfo, |
3276 | first_time, nls_info); | |
189acaae | 3277 | else if (extended_security |
1da177e4 LT |
3278 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) |
3279 | && (pSesInfo->server->secType == NTLMSSP)) { | |
189acaae | 3280 | rc = -EOPNOTSUPP; |
1da177e4 LT |
3281 | } else if (extended_security |
3282 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
3283 | && (pSesInfo->server->secType == RawNTLMSSP)) { | |
5815449d | 3284 | cFYI(1, ("NTLMSSP sesssetup")); |
1da177e4 LT |
3285 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, |
3286 | pSesInfo, | |
3287 | &ntlmv2_flag, | |
3288 | nls_info); | |
3289 | if (!rc) { | |
3290 | if(ntlmv2_flag) { | |
3291 | char * v2_response; | |
3292 | cFYI(1,("Can use more secure NTLM version 2 password hash")); | |
3293 | if(CalcNTLMv2_partial_mac_key(pSesInfo, | |
3294 | nls_info)) { | |
3295 | rc = -ENOMEM; | |
3296 | goto ss_err_exit; | |
3297 | } else | |
3298 | v2_response = kmalloc(16 + 64 /* blob */, GFP_KERNEL); | |
3299 | if(v2_response) { | |
3300 | CalcNTLMv2_response(pSesInfo,v2_response); | |
ad009ac9 SF |
3301 | /* if(first_time) |
3302 | cifs_calculate_ntlmv2_mac_key( | |
3303 | pSesInfo->server->mac_signing_key, | |
3304 | response, ntlm_session_key, */ | |
1da177e4 LT |
3305 | kfree(v2_response); |
3306 | /* BB Put dummy sig in SessSetup PDU? */ | |
3307 | } else { | |
3308 | rc = -ENOMEM; | |
3309 | goto ss_err_exit; | |
3310 | } | |
3311 | ||
3312 | } else { | |
3313 | SMBNTencrypt(pSesInfo->password, | |
3314 | pSesInfo->server->cryptKey, | |
3315 | ntlm_session_key); | |
3316 | ||
ad009ac9 SF |
3317 | if(first_time) |
3318 | cifs_calculate_mac_key( | |
3319 | pSesInfo->server->mac_signing_key, | |
3320 | ntlm_session_key, | |
3321 | pSesInfo->password); | |
1da177e4 LT |
3322 | } |
3323 | /* for better security the weaker lanman hash not sent | |
3324 | in AuthSessSetup so we no longer calculate it */ | |
3325 | ||
3326 | rc = CIFSNTLMSSPAuthSessSetup(xid, | |
3327 | pSesInfo, | |
3328 | ntlm_session_key, | |
3329 | ntlmv2_flag, | |
3330 | nls_info); | |
3331 | } | |
3332 | } else { /* old style NTLM 0.12 session setup */ | |
3333 | SMBNTencrypt(pSesInfo->password, | |
3334 | pSesInfo->server->cryptKey, | |
3335 | ntlm_session_key); | |
3336 | ||
ad009ac9 SF |
3337 | if(first_time) |
3338 | cifs_calculate_mac_key( | |
3339 | pSesInfo->server->mac_signing_key, | |
3340 | ntlm_session_key, pSesInfo->password); | |
3341 | ||
1da177e4 LT |
3342 | rc = CIFSSessSetup(xid, pSesInfo, |
3343 | ntlm_session_key, nls_info); | |
3344 | } | |
3345 | if (rc) { | |
3346 | cERROR(1,("Send error in SessSetup = %d",rc)); | |
3347 | } else { | |
3348 | cFYI(1,("CIFS Session Established successfully")); | |
3349 | pSesInfo->status = CifsGood; | |
3350 | } | |
3351 | } | |
3352 | ss_err_exit: | |
3353 | return rc; | |
3354 | } | |
3355 |