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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 | { | |
185 | if(server->protocolType == IPV6) { | |
186 | rc = ipv6_connect(&server->addr.sockAddr6,&server->ssocket); | |
187 | } else { | |
188 | rc = ipv4_connect(&server->addr.sockAddr, | |
189 | &server->ssocket, | |
a10faeb2 SF |
190 | server->workstation_RFC1001_name, |
191 | server->server_RFC1001_name); | |
1da177e4 LT |
192 | } |
193 | if(rc) { | |
b387eaeb | 194 | cFYI(1,("reconnect error %d",rc)); |
0cb766ae | 195 | msleep(3000); |
1da177e4 LT |
196 | } else { |
197 | atomic_inc(&tcpSesReconnectCount); | |
198 | spin_lock(&GlobalMid_Lock); | |
199 | if(server->tcpStatus != CifsExiting) | |
200 | server->tcpStatus = CifsGood; | |
ad009ac9 SF |
201 | server->sequence_number = 0; |
202 | spin_unlock(&GlobalMid_Lock); | |
1da177e4 LT |
203 | /* atomic_set(&server->inFlight,0);*/ |
204 | wake_up(&server->response_q); | |
205 | } | |
206 | } | |
207 | return rc; | |
208 | } | |
209 | ||
e4eb295d SF |
210 | /* |
211 | return codes: | |
212 | 0 not a transact2, or all data present | |
213 | >0 transact2 with that much data missing | |
214 | -EINVAL = invalid transact2 | |
215 | ||
216 | */ | |
217 | static int check2ndT2(struct smb_hdr * pSMB, unsigned int maxBufSize) | |
218 | { | |
219 | struct smb_t2_rsp * pSMBt; | |
220 | int total_data_size; | |
221 | int data_in_this_rsp; | |
222 | int remaining; | |
223 | ||
224 | if(pSMB->Command != SMB_COM_TRANSACTION2) | |
225 | return 0; | |
226 | ||
227 | /* check for plausible wct, bcc and t2 data and parm sizes */ | |
228 | /* check for parm and data offset going beyond end of smb */ | |
229 | if(pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
230 | cFYI(1,("invalid transact2 word count")); | |
231 | return -EINVAL; | |
232 | } | |
233 | ||
234 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
235 | ||
236 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
237 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
238 | ||
239 | remaining = total_data_size - data_in_this_rsp; | |
240 | ||
241 | if(remaining == 0) | |
242 | return 0; | |
243 | else if(remaining < 0) { | |
244 | cFYI(1,("total data %d smaller than data in frame %d", | |
245 | total_data_size, data_in_this_rsp)); | |
246 | return -EINVAL; | |
247 | } else { | |
248 | cFYI(1,("missing %d bytes from transact2, check next response", | |
249 | remaining)); | |
250 | if(total_data_size > maxBufSize) { | |
251 | cERROR(1,("TotalDataSize %d is over maximum buffer %d", | |
252 | total_data_size,maxBufSize)); | |
253 | return -EINVAL; | |
254 | } | |
255 | return remaining; | |
256 | } | |
257 | } | |
258 | ||
259 | static int coalesce_t2(struct smb_hdr * psecond, struct smb_hdr *pTargetSMB) | |
260 | { | |
261 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
262 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
263 | int total_data_size; | |
264 | int total_in_buf; | |
265 | int remaining; | |
266 | int total_in_buf2; | |
267 | char * data_area_of_target; | |
268 | char * data_area_of_buf2; | |
269 | __u16 byte_count; | |
270 | ||
271 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
272 | ||
273 | if(total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { | |
274 | cFYI(1,("total data sizes of primary and secondary t2 differ")); | |
275 | } | |
276 | ||
277 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
278 | ||
279 | remaining = total_data_size - total_in_buf; | |
280 | ||
281 | if(remaining < 0) | |
282 | return -EINVAL; | |
283 | ||
284 | if(remaining == 0) /* nothing to do, ignore */ | |
285 | return 0; | |
286 | ||
287 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); | |
288 | if(remaining < total_in_buf2) { | |
289 | cFYI(1,("transact2 2nd response contains too much data")); | |
290 | } | |
291 | ||
292 | /* find end of first SMB data area */ | |
293 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + | |
294 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); | |
295 | /* validate target area */ | |
296 | ||
297 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
298 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); | |
299 | ||
300 | data_area_of_target += total_in_buf; | |
301 | ||
302 | /* copy second buffer into end of first buffer */ | |
303 | memcpy(data_area_of_target,data_area_of_buf2,total_in_buf2); | |
304 | total_in_buf += total_in_buf2; | |
305 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
306 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
307 | byte_count += total_in_buf2; | |
308 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
309 | ||
70ca734a | 310 | byte_count = pTargetSMB->smb_buf_length; |
e4eb295d SF |
311 | byte_count += total_in_buf2; |
312 | ||
313 | /* BB also add check that we are not beyond maximum buffer size */ | |
314 | ||
70ca734a | 315 | pTargetSMB->smb_buf_length = byte_count; |
e4eb295d SF |
316 | |
317 | if(remaining == total_in_buf2) { | |
318 | cFYI(1,("found the last secondary response")); | |
319 | return 0; /* we are done */ | |
320 | } else /* more responses to go */ | |
321 | return 1; | |
322 | ||
323 | } | |
324 | ||
1da177e4 LT |
325 | static int |
326 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
327 | { | |
328 | int length; | |
329 | unsigned int pdu_length, total_read; | |
330 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
331 | struct smb_hdr *bigbuf = NULL; |
332 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
333 | struct msghdr smb_msg; |
334 | struct kvec iov; | |
335 | struct socket *csocket = server->ssocket; | |
336 | struct list_head *tmp; | |
337 | struct cifsSesInfo *ses; | |
338 | struct task_struct *task_to_wake = NULL; | |
339 | struct mid_q_entry *mid_entry; | |
70ca734a | 340 | char temp; |
b8643e1b | 341 | int isLargeBuf = FALSE; |
e4eb295d SF |
342 | int isMultiRsp; |
343 | int reconnect; | |
1da177e4 LT |
344 | |
345 | daemonize("cifsd"); | |
346 | allow_signal(SIGKILL); | |
347 | current->flags |= PF_MEMALLOC; | |
348 | server->tsk = current; /* save process info to wake at shutdown */ | |
349 | cFYI(1, ("Demultiplex PID: %d", current->pid)); | |
350 | write_lock(&GlobalSMBSeslock); | |
351 | atomic_inc(&tcpSesAllocCount); | |
352 | length = tcpSesAllocCount.counter; | |
353 | write_unlock(&GlobalSMBSeslock); | |
f191401f | 354 | complete(&cifsd_complete); |
1da177e4 LT |
355 | if(length > 1) { |
356 | mempool_resize(cifs_req_poolp, | |
357 | length + cifs_min_rcv, | |
358 | GFP_KERNEL); | |
359 | } | |
360 | ||
361 | while (server->tcpStatus != CifsExiting) { | |
ede1327e SF |
362 | if (try_to_freeze()) |
363 | continue; | |
b8643e1b SF |
364 | if (bigbuf == NULL) { |
365 | bigbuf = cifs_buf_get(); | |
0fd1ffe0 PM |
366 | if (!bigbuf) { |
367 | cERROR(1, ("No memory for large SMB response")); | |
b8643e1b SF |
368 | msleep(3000); |
369 | /* retry will check if exiting */ | |
370 | continue; | |
371 | } | |
0fd1ffe0 PM |
372 | } else if (isLargeBuf) { |
373 | /* we are reusing a dirty large buf, clear its start */ | |
b8643e1b | 374 | memset(bigbuf, 0, sizeof (struct smb_hdr)); |
1da177e4 | 375 | } |
b8643e1b SF |
376 | |
377 | if (smallbuf == NULL) { | |
378 | smallbuf = cifs_small_buf_get(); | |
0fd1ffe0 PM |
379 | if (!smallbuf) { |
380 | cERROR(1, ("No memory for SMB response")); | |
b8643e1b SF |
381 | msleep(1000); |
382 | /* retry will check if exiting */ | |
383 | continue; | |
384 | } | |
385 | /* beginning of smb buffer is cleared in our buf_get */ | |
386 | } else /* if existing small buf clear beginning */ | |
387 | memset(smallbuf, 0, sizeof (struct smb_hdr)); | |
388 | ||
389 | isLargeBuf = FALSE; | |
e4eb295d | 390 | isMultiRsp = FALSE; |
b8643e1b | 391 | smb_buffer = smallbuf; |
1da177e4 LT |
392 | iov.iov_base = smb_buffer; |
393 | iov.iov_len = 4; | |
394 | smb_msg.msg_control = NULL; | |
395 | smb_msg.msg_controllen = 0; | |
396 | length = | |
397 | kernel_recvmsg(csocket, &smb_msg, | |
398 | &iov, 1, 4, 0 /* BB see socket.h flags */); | |
399 | ||
0fd1ffe0 | 400 | if (server->tcpStatus == CifsExiting) { |
1da177e4 LT |
401 | break; |
402 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
0fd1ffe0 | 403 | cFYI(1, ("Reconnect after server stopped responding")); |
1da177e4 | 404 | cifs_reconnect(server); |
0fd1ffe0 | 405 | cFYI(1, ("call to reconnect done")); |
1da177e4 LT |
406 | csocket = server->ssocket; |
407 | continue; | |
408 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 409 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
410 | allowing socket to clear and app threads to set |
411 | tcpStatus CifsNeedReconnect if server hung */ | |
412 | continue; | |
413 | } else if (length <= 0) { | |
0fd1ffe0 PM |
414 | if (server->tcpStatus == CifsNew) { |
415 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
416 | /* some servers kill the TCP session rather than |
417 | returning an SMB negprot error, in which | |
418 | case reconnecting here is not going to help, | |
419 | and so simply return error to mount */ | |
1da177e4 LT |
420 | break; |
421 | } | |
0fd1ffe0 | 422 | if (!try_to_freeze() && (length == -EINTR)) { |
1da177e4 LT |
423 | cFYI(1,("cifsd thread killed")); |
424 | break; | |
425 | } | |
57337e42 SF |
426 | cFYI(1,("Reconnect after unexpected peek error %d", |
427 | length)); | |
1da177e4 LT |
428 | cifs_reconnect(server); |
429 | csocket = server->ssocket; | |
430 | wake_up(&server->response_q); | |
431 | continue; | |
46810cbf SF |
432 | } else if (length < 4) { |
433 | cFYI(1, | |
57337e42 | 434 | ("Frame under four bytes received (%d bytes long)", |
46810cbf SF |
435 | length)); |
436 | cifs_reconnect(server); | |
437 | csocket = server->ssocket; | |
438 | wake_up(&server->response_q); | |
439 | continue; | |
440 | } | |
1da177e4 | 441 | |
70ca734a SF |
442 | /* The right amount was read from socket - 4 bytes */ |
443 | /* so we can now interpret the length field */ | |
46810cbf | 444 | |
70ca734a SF |
445 | /* the first byte big endian of the length field, |
446 | is actually not part of the length but the type | |
447 | with the most common, zero, as regular data */ | |
448 | temp = *((char *) smb_buffer); | |
46810cbf | 449 | |
70ca734a SF |
450 | /* Note that FC 1001 length is big endian on the wire, |
451 | but we convert it here so it is always manipulated | |
452 | as host byte order */ | |
46810cbf | 453 | pdu_length = ntohl(smb_buffer->smb_buf_length); |
70ca734a SF |
454 | smb_buffer->smb_buf_length = pdu_length; |
455 | ||
456 | cFYI(1,("rfc1002 length 0x%x)", pdu_length+4)); | |
46810cbf | 457 | |
70ca734a | 458 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
e4eb295d | 459 | continue; |
70ca734a | 460 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
e4eb295d SF |
461 | cFYI(1,("Good RFC 1002 session rsp")); |
462 | continue; | |
70ca734a | 463 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
46810cbf SF |
464 | /* we get this from Windows 98 instead of |
465 | an error on SMB negprot response */ | |
e4eb295d | 466 | cFYI(1,("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 467 | pdu_length)); |
46810cbf SF |
468 | if(server->tcpStatus == CifsNew) { |
469 | /* if nack on negprot (rather than | |
470 | ret of smb negprot error) reconnecting | |
471 | not going to help, ret error to mount */ | |
472 | break; | |
473 | } else { | |
474 | /* give server a second to | |
475 | clean up before reconnect attempt */ | |
476 | msleep(1000); | |
477 | /* always try 445 first on reconnect | |
478 | since we get NACK on some if we ever | |
479 | connected to port 139 (the NACK is | |
480 | since we do not begin with RFC1001 | |
481 | session initialize frame) */ | |
482 | server->addr.sockAddr.sin_port = | |
483 | htons(CIFS_PORT); | |
1da177e4 LT |
484 | cifs_reconnect(server); |
485 | csocket = server->ssocket; | |
46810cbf | 486 | wake_up(&server->response_q); |
1da177e4 | 487 | continue; |
46810cbf | 488 | } |
70ca734a | 489 | } else if (temp != (char) 0) { |
46810cbf | 490 | cERROR(1,("Unknown RFC 1002 frame")); |
70ca734a SF |
491 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
492 | length); | |
46810cbf SF |
493 | cifs_reconnect(server); |
494 | csocket = server->ssocket; | |
495 | continue; | |
e4eb295d SF |
496 | } |
497 | ||
498 | /* else we have an SMB response */ | |
499 | if((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || | |
46810cbf | 500 | (pdu_length < sizeof (struct smb_hdr) - 1 - 4)) { |
e4eb295d | 501 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 502 | length, pdu_length+4)); |
e4eb295d SF |
503 | cifs_reconnect(server); |
504 | csocket = server->ssocket; | |
505 | wake_up(&server->response_q); | |
506 | continue; | |
507 | } | |
508 | ||
509 | /* else length ok */ | |
510 | reconnect = 0; | |
511 | ||
ec637e3f | 512 | if(pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
e4eb295d SF |
513 | isLargeBuf = TRUE; |
514 | memcpy(bigbuf, smallbuf, 4); | |
515 | smb_buffer = bigbuf; | |
516 | } | |
517 | length = 0; | |
518 | iov.iov_base = 4 + (char *)smb_buffer; | |
519 | iov.iov_len = pdu_length; | |
520 | for (total_read = 0; total_read < pdu_length; | |
521 | total_read += length) { | |
522 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
523 | pdu_length - total_read, 0); | |
524 | if((server->tcpStatus == CifsExiting) || | |
525 | (length == -EINTR)) { | |
526 | /* then will exit */ | |
527 | reconnect = 2; | |
528 | break; | |
529 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
530 | cifs_reconnect(server); |
531 | csocket = server->ssocket; | |
e4eb295d SF |
532 | /* Reconnect wakes up rspns q */ |
533 | /* Now we will reread sock */ | |
534 | reconnect = 1; | |
535 | break; | |
536 | } else if ((length == -ERESTARTSYS) || | |
537 | (length == -EAGAIN)) { | |
538 | msleep(1); /* minimum sleep to prevent looping, | |
539 | allowing socket to clear and app | |
540 | threads to set tcpStatus | |
541 | CifsNeedReconnect if server hung*/ | |
46810cbf | 542 | continue; |
e4eb295d SF |
543 | } else if (length <= 0) { |
544 | cERROR(1,("Received no data, expecting %d", | |
545 | pdu_length - total_read)); | |
546 | cifs_reconnect(server); | |
547 | csocket = server->ssocket; | |
548 | reconnect = 1; | |
549 | break; | |
46810cbf | 550 | } |
e4eb295d SF |
551 | } |
552 | if(reconnect == 2) | |
553 | break; | |
554 | else if(reconnect == 1) | |
555 | continue; | |
1da177e4 | 556 | |
e4eb295d SF |
557 | length += 4; /* account for rfc1002 hdr */ |
558 | ||
09d1db5c | 559 | |
e4eb295d | 560 | dump_smb(smb_buffer, length); |
184ed211 | 561 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 562 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
563 | continue; |
564 | } | |
1da177e4 | 565 | |
e4eb295d SF |
566 | |
567 | task_to_wake = NULL; | |
568 | spin_lock(&GlobalMid_Lock); | |
569 | list_for_each(tmp, &server->pending_mid_q) { | |
570 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
571 | ||
572 | if ((mid_entry->mid == smb_buffer->Mid) && | |
573 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && | |
574 | (mid_entry->command == smb_buffer->Command)) { | |
e4eb295d SF |
575 | if(check2ndT2(smb_buffer,server->maxBuf) > 0) { |
576 | /* We have a multipart transact2 resp */ | |
cd63499c | 577 | isMultiRsp = TRUE; |
e4eb295d SF |
578 | if(mid_entry->resp_buf) { |
579 | /* merge response - fix up 1st*/ | |
580 | if(coalesce_t2(smb_buffer, | |
581 | mid_entry->resp_buf)) { | |
3979877e | 582 | mid_entry->multiRsp = 1; |
e4eb295d SF |
583 | break; |
584 | } else { | |
585 | /* all parts received */ | |
3979877e | 586 | mid_entry->multiEnd = 1; |
e4eb295d SF |
587 | goto multi_t2_fnd; |
588 | } | |
589 | } else { | |
590 | if(!isLargeBuf) { | |
591 | cERROR(1,("1st trans2 resp needs bigbuf")); | |
592 | /* BB maybe we can fix this up, switch | |
593 | to already allocated large buffer? */ | |
594 | } else { | |
cd63499c | 595 | /* Have first buffer */ |
e4eb295d SF |
596 | mid_entry->resp_buf = |
597 | smb_buffer; | |
598 | mid_entry->largeBuf = 1; | |
e4eb295d SF |
599 | bigbuf = NULL; |
600 | } | |
601 | } | |
602 | break; | |
603 | } | |
604 | mid_entry->resp_buf = smb_buffer; | |
46810cbf | 605 | if(isLargeBuf) |
e4eb295d | 606 | mid_entry->largeBuf = 1; |
46810cbf | 607 | else |
e4eb295d SF |
608 | mid_entry->largeBuf = 0; |
609 | multi_t2_fnd: | |
610 | task_to_wake = mid_entry->tsk; | |
611 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
612 | #ifdef CONFIG_CIFS_STATS2 |
613 | mid_entry->when_received = jiffies; | |
614 | #endif | |
e4eb295d | 615 | break; |
46810cbf | 616 | } |
1da177e4 | 617 | } |
e4eb295d SF |
618 | spin_unlock(&GlobalMid_Lock); |
619 | if (task_to_wake) { | |
cd63499c SF |
620 | /* Was previous buf put in mpx struct for multi-rsp? */ |
621 | if(!isMultiRsp) { | |
622 | /* smb buffer will be freed by user thread */ | |
623 | if(isLargeBuf) { | |
624 | bigbuf = NULL; | |
625 | } else | |
626 | smallbuf = NULL; | |
627 | } | |
e4eb295d | 628 | wake_up_process(task_to_wake); |
d7c8c94d | 629 | } else if ((is_valid_oplock_break(smb_buffer, server) == FALSE) |
e4eb295d | 630 | && (isMultiRsp == FALSE)) { |
3979877e | 631 | cERROR(1, ("No task to wake, unknown frame rcvd! NumMids %d", midCount.counter)); |
70ca734a SF |
632 | cifs_dump_mem("Received Data is: ",(char *)smb_buffer, |
633 | sizeof(struct smb_hdr)); | |
3979877e SF |
634 | #ifdef CONFIG_CIFS_DEBUG2 |
635 | cifs_dump_detail(smb_buffer); | |
636 | cifs_dump_mids(server); | |
637 | #endif /* CIFS_DEBUG2 */ | |
638 | ||
e4eb295d SF |
639 | } |
640 | } /* end while !EXITING */ | |
641 | ||
1da177e4 LT |
642 | spin_lock(&GlobalMid_Lock); |
643 | server->tcpStatus = CifsExiting; | |
644 | server->tsk = NULL; | |
31ca3bc3 SF |
645 | /* check if we have blocked requests that need to free */ |
646 | /* Note that cifs_max_pending is normally 50, but | |
647 | can be set at module install time to as little as two */ | |
648 | if(atomic_read(&server->inFlight) >= cifs_max_pending) | |
649 | atomic_set(&server->inFlight, cifs_max_pending - 1); | |
650 | /* We do not want to set the max_pending too low or we | |
651 | could end up with the counter going negative */ | |
1da177e4 LT |
652 | spin_unlock(&GlobalMid_Lock); |
653 | /* Although there should not be any requests blocked on | |
654 | this queue it can not hurt to be paranoid and try to wake up requests | |
09d1db5c | 655 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
656 | to the same server - they now will see the session is in exit state |
657 | and get out of SendReceive. */ | |
658 | wake_up_all(&server->request_q); | |
659 | /* give those requests time to exit */ | |
b8643e1b SF |
660 | msleep(125); |
661 | ||
1da177e4 LT |
662 | if(server->ssocket) { |
663 | sock_release(csocket); | |
664 | server->ssocket = NULL; | |
665 | } | |
b8643e1b SF |
666 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
667 | if (bigbuf != NULL) | |
668 | cifs_buf_release(bigbuf); | |
669 | if (smallbuf != NULL) | |
670 | cifs_small_buf_release(smallbuf); | |
1da177e4 LT |
671 | |
672 | read_lock(&GlobalSMBSeslock); | |
673 | if (list_empty(&server->pending_mid_q)) { | |
09d1db5c SF |
674 | /* loop through server session structures attached to this and |
675 | mark them dead */ | |
1da177e4 LT |
676 | list_for_each(tmp, &GlobalSMBSessionList) { |
677 | ses = | |
678 | list_entry(tmp, struct cifsSesInfo, | |
679 | cifsSessionList); | |
680 | if (ses->server == server) { | |
681 | ses->status = CifsExiting; | |
682 | ses->server = NULL; | |
683 | } | |
684 | } | |
685 | read_unlock(&GlobalSMBSeslock); | |
686 | } else { | |
31ca3bc3 SF |
687 | /* although we can not zero the server struct pointer yet, |
688 | since there are active requests which may depnd on them, | |
689 | mark the corresponding SMB sessions as exiting too */ | |
690 | list_for_each(tmp, &GlobalSMBSessionList) { | |
691 | ses = list_entry(tmp, struct cifsSesInfo, | |
692 | cifsSessionList); | |
693 | if (ses->server == server) { | |
694 | ses->status = CifsExiting; | |
695 | } | |
696 | } | |
697 | ||
1da177e4 LT |
698 | spin_lock(&GlobalMid_Lock); |
699 | list_for_each(tmp, &server->pending_mid_q) { | |
700 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
701 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
702 | cFYI(1, | |
09d1db5c | 703 | ("Clearing Mid 0x%x - waking up ",mid_entry->mid)); |
1da177e4 LT |
704 | task_to_wake = mid_entry->tsk; |
705 | if(task_to_wake) { | |
706 | wake_up_process(task_to_wake); | |
707 | } | |
708 | } | |
709 | } | |
710 | spin_unlock(&GlobalMid_Lock); | |
711 | read_unlock(&GlobalSMBSeslock); | |
1da177e4 | 712 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 713 | msleep(125); |
1da177e4 LT |
714 | } |
715 | ||
f191401f | 716 | if (!list_empty(&server->pending_mid_q)) { |
1da177e4 LT |
717 | /* mpx threads have not exited yet give them |
718 | at least the smb send timeout time for long ops */ | |
31ca3bc3 SF |
719 | /* due to delays on oplock break requests, we need |
720 | to wait at least 45 seconds before giving up | |
721 | on a request getting a response and going ahead | |
722 | and killing cifsd */ | |
1da177e4 | 723 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 724 | msleep(46000); |
1da177e4 LT |
725 | /* if threads still have not exited they are probably never |
726 | coming home not much else we can do but free the memory */ | |
727 | } | |
1da177e4 LT |
728 | |
729 | write_lock(&GlobalSMBSeslock); | |
730 | atomic_dec(&tcpSesAllocCount); | |
731 | length = tcpSesAllocCount.counter; | |
31ca3bc3 SF |
732 | |
733 | /* last chance to mark ses pointers invalid | |
734 | if there are any pointing to this (e.g | |
735 | if a crazy root user tried to kill cifsd | |
736 | kernel thread explicitly this might happen) */ | |
737 | list_for_each(tmp, &GlobalSMBSessionList) { | |
738 | ses = list_entry(tmp, struct cifsSesInfo, | |
739 | cifsSessionList); | |
740 | if (ses->server == server) { | |
741 | ses->server = NULL; | |
742 | } | |
743 | } | |
1da177e4 | 744 | write_unlock(&GlobalSMBSeslock); |
31ca3bc3 SF |
745 | |
746 | kfree(server); | |
1da177e4 LT |
747 | if(length > 0) { |
748 | mempool_resize(cifs_req_poolp, | |
749 | length + cifs_min_rcv, | |
750 | GFP_KERNEL); | |
751 | } | |
b8643e1b | 752 | |
f191401f | 753 | complete_and_exit(&cifsd_complete, 0); |
1da177e4 LT |
754 | return 0; |
755 | } | |
756 | ||
1da177e4 LT |
757 | static int |
758 | cifs_parse_mount_options(char *options, const char *devname,struct smb_vol *vol) | |
759 | { | |
760 | char *value; | |
761 | char *data; | |
762 | unsigned int temp_len, i, j; | |
763 | char separator[2]; | |
764 | ||
765 | separator[0] = ','; | |
766 | separator[1] = 0; | |
767 | ||
768 | memset(vol->source_rfc1001_name,0x20,15); | |
769 | for(i=0;i < strnlen(system_utsname.nodename,15);i++) { | |
770 | /* does not have to be a perfect mapping since the field is | |
771 | informational, only used for servers that do not support | |
772 | port 445 and it can be overridden at mount time */ | |
09d1db5c SF |
773 | vol->source_rfc1001_name[i] = |
774 | toupper(system_utsname.nodename[i]); | |
1da177e4 LT |
775 | } |
776 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
777 | /* null target name indicates to use *SMBSERVR default called name |
778 | if we end up sending RFC1001 session initialize */ | |
779 | vol->target_rfc1001_name[0] = 0; | |
1da177e4 LT |
780 | vol->linux_uid = current->uid; /* current->euid instead? */ |
781 | vol->linux_gid = current->gid; | |
782 | vol->dir_mode = S_IRWXUGO; | |
783 | /* 2767 perms indicate mandatory locking support */ | |
784 | vol->file_mode = S_IALLUGO & ~(S_ISUID | S_IXGRP); | |
785 | ||
786 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
787 | vol->rw = TRUE; | |
ac67055e JA |
788 | /* default is always to request posix paths. */ |
789 | vol->posix_paths = 1; | |
790 | ||
1da177e4 LT |
791 | if (!options) |
792 | return 1; | |
793 | ||
794 | if(strncmp(options,"sep=",4) == 0) { | |
795 | if(options[4] != 0) { | |
796 | separator[0] = options[4]; | |
797 | options += 5; | |
798 | } else { | |
799 | cFYI(1,("Null separator not allowed")); | |
800 | } | |
801 | } | |
802 | ||
803 | while ((data = strsep(&options, separator)) != NULL) { | |
804 | if (!*data) | |
805 | continue; | |
806 | if ((value = strchr(data, '=')) != NULL) | |
807 | *value++ = '\0'; | |
808 | ||
809 | if (strnicmp(data, "user_xattr",10) == 0) {/*parse before user*/ | |
810 | vol->no_xattr = 0; | |
811 | } else if (strnicmp(data, "nouser_xattr",12) == 0) { | |
812 | vol->no_xattr = 1; | |
813 | } else if (strnicmp(data, "user", 4) == 0) { | |
814 | if (!value || !*value) { | |
815 | printk(KERN_WARNING | |
816 | "CIFS: invalid or missing username\n"); | |
817 | return 1; /* needs_arg; */ | |
818 | } | |
819 | if (strnlen(value, 200) < 200) { | |
820 | vol->username = value; | |
821 | } else { | |
822 | printk(KERN_WARNING "CIFS: username too long\n"); | |
823 | return 1; | |
824 | } | |
825 | } else if (strnicmp(data, "pass", 4) == 0) { | |
826 | if (!value) { | |
827 | vol->password = NULL; | |
828 | continue; | |
829 | } else if(value[0] == 0) { | |
830 | /* check if string begins with double comma | |
831 | since that would mean the password really | |
832 | does start with a comma, and would not | |
833 | indicate an empty string */ | |
834 | if(value[1] != separator[0]) { | |
835 | vol->password = NULL; | |
836 | continue; | |
837 | } | |
838 | } | |
839 | temp_len = strlen(value); | |
840 | /* removed password length check, NTLM passwords | |
841 | can be arbitrarily long */ | |
842 | ||
843 | /* if comma in password, the string will be | |
844 | prematurely null terminated. Commas in password are | |
845 | specified across the cifs mount interface by a double | |
846 | comma ie ,, and a comma used as in other cases ie ',' | |
847 | as a parameter delimiter/separator is single and due | |
848 | to the strsep above is temporarily zeroed. */ | |
849 | ||
850 | /* NB: password legally can have multiple commas and | |
851 | the only illegal character in a password is null */ | |
852 | ||
09d1db5c SF |
853 | if ((value[temp_len] == 0) && |
854 | (value[temp_len+1] == separator[0])) { | |
1da177e4 LT |
855 | /* reinsert comma */ |
856 | value[temp_len] = separator[0]; | |
857 | temp_len+=2; /* move after the second comma */ | |
858 | while(value[temp_len] != 0) { | |
859 | if (value[temp_len] == separator[0]) { | |
09d1db5c SF |
860 | if (value[temp_len+1] == |
861 | separator[0]) { | |
862 | /* skip second comma */ | |
863 | temp_len++; | |
1da177e4 LT |
864 | } else { |
865 | /* single comma indicating start | |
866 | of next parm */ | |
867 | break; | |
868 | } | |
869 | } | |
870 | temp_len++; | |
871 | } | |
872 | if(value[temp_len] == 0) { | |
873 | options = NULL; | |
874 | } else { | |
875 | value[temp_len] = 0; | |
876 | /* point option to start of next parm */ | |
877 | options = value + temp_len + 1; | |
878 | } | |
879 | /* go from value to value + temp_len condensing | |
880 | double commas to singles. Note that this ends up | |
881 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 882 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
433dc24f SF |
883 | if(vol->password == NULL) { |
884 | printk("CIFS: no memory for pass\n"); | |
885 | return 1; | |
886 | } | |
1da177e4 LT |
887 | for(i=0,j=0;i<temp_len;i++,j++) { |
888 | vol->password[j] = value[i]; | |
09d1db5c SF |
889 | if(value[i] == separator[0] |
890 | && value[i+1] == separator[0]) { | |
1da177e4 LT |
891 | /* skip second comma */ |
892 | i++; | |
893 | } | |
894 | } | |
895 | vol->password[j] = 0; | |
896 | } else { | |
e915fc49 | 897 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
433dc24f SF |
898 | if(vol->password == NULL) { |
899 | printk("CIFS: no memory for pass\n"); | |
900 | return 1; | |
901 | } | |
1da177e4 LT |
902 | strcpy(vol->password, value); |
903 | } | |
904 | } else if (strnicmp(data, "ip", 2) == 0) { | |
905 | if (!value || !*value) { | |
906 | vol->UNCip = NULL; | |
907 | } else if (strnlen(value, 35) < 35) { | |
908 | vol->UNCip = value; | |
909 | } else { | |
910 | printk(KERN_WARNING "CIFS: ip address too long\n"); | |
911 | return 1; | |
912 | } | |
bf820679 SF |
913 | } else if (strnicmp(data, "sec", 3) == 0) { |
914 | if (!value || !*value) { | |
915 | cERROR(1,("no security value specified")); | |
916 | continue; | |
917 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
750d1151 | 918 | vol->secFlg |= CIFSSEC_MAY_KRB5 | |
189acaae | 919 | CIFSSEC_MUST_SIGN; |
bf820679 | 920 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
750d1151 | 921 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
189acaae | 922 | CIFSSEC_MAY_KRB5; */ |
bf820679 SF |
923 | cERROR(1,("Krb5 cifs privacy not supported")); |
924 | return 1; | |
925 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 926 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
bf820679 | 927 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 928 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 929 | CIFSSEC_MUST_SIGN; |
bf820679 | 930 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 931 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 932 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 933 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 934 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
935 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
936 | /* ntlm is default so can be turned off too */ | |
750d1151 | 937 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 938 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 939 | /* BB is there a better way to do this? */ |
750d1151 | 940 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
941 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
942 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
750d1151 | 943 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 944 | #endif |
bf820679 | 945 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 946 | vol->nullauth = 1; |
bf820679 SF |
947 | } else { |
948 | cERROR(1,("bad security option: %s", value)); | |
949 | return 1; | |
950 | } | |
1da177e4 LT |
951 | } else if ((strnicmp(data, "unc", 3) == 0) |
952 | || (strnicmp(data, "target", 6) == 0) | |
953 | || (strnicmp(data, "path", 4) == 0)) { | |
954 | if (!value || !*value) { | |
955 | printk(KERN_WARNING | |
956 | "CIFS: invalid path to network resource\n"); | |
957 | return 1; /* needs_arg; */ | |
958 | } | |
959 | if ((temp_len = strnlen(value, 300)) < 300) { | |
960 | vol->UNC = kmalloc(temp_len+1,GFP_KERNEL); | |
961 | if(vol->UNC == NULL) | |
962 | return 1; | |
963 | strcpy(vol->UNC,value); | |
964 | if (strncmp(vol->UNC, "//", 2) == 0) { | |
965 | vol->UNC[0] = '\\'; | |
966 | vol->UNC[1] = '\\'; | |
967 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
968 | printk(KERN_WARNING | |
969 | "CIFS: UNC Path does not begin with // or \\\\ \n"); | |
970 | return 1; | |
971 | } | |
972 | } else { | |
973 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
974 | return 1; | |
975 | } | |
976 | } else if ((strnicmp(data, "domain", 3) == 0) | |
977 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
978 | if (!value || !*value) { | |
979 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
980 | return 1; /* needs_arg; */ | |
981 | } | |
982 | /* BB are there cases in which a comma can be valid in | |
983 | a domain name and need special handling? */ | |
3979877e | 984 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
985 | vol->domainname = value; |
986 | cFYI(1, ("Domain name set")); | |
987 | } else { | |
988 | printk(KERN_WARNING "CIFS: domain name too long\n"); | |
989 | return 1; | |
990 | } | |
991 | } else if (strnicmp(data, "iocharset", 9) == 0) { | |
992 | if (!value || !*value) { | |
993 | printk(KERN_WARNING "CIFS: invalid iocharset specified\n"); | |
994 | return 1; /* needs_arg; */ | |
995 | } | |
996 | if (strnlen(value, 65) < 65) { | |
997 | if(strnicmp(value,"default",7)) | |
998 | vol->iocharset = value; | |
999 | /* if iocharset not set load_nls_default used by caller */ | |
1000 | cFYI(1, ("iocharset set to %s",value)); | |
1001 | } else { | |
1002 | printk(KERN_WARNING "CIFS: iocharset name too long.\n"); | |
1003 | return 1; | |
1004 | } | |
1005 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1006 | if (value && *value) { | |
1007 | vol->linux_uid = | |
1008 | simple_strtoul(value, &value, 0); | |
1009 | } | |
1010 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1011 | if (value && *value) { | |
1012 | vol->linux_gid = | |
1013 | simple_strtoul(value, &value, 0); | |
1014 | } | |
1015 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1016 | if (value && *value) { | |
1017 | vol->file_mode = | |
1018 | simple_strtoul(value, &value, 0); | |
1019 | } | |
1020 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1021 | if (value && *value) { | |
1022 | vol->dir_mode = | |
1023 | simple_strtoul(value, &value, 0); | |
1024 | } | |
1025 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1026 | if (value && *value) { | |
1027 | vol->dir_mode = | |
1028 | simple_strtoul(value, &value, 0); | |
1029 | } | |
1030 | } else if (strnicmp(data, "port", 4) == 0) { | |
1031 | if (value && *value) { | |
1032 | vol->port = | |
1033 | simple_strtoul(value, &value, 0); | |
1034 | } | |
1035 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1036 | if (value && *value) { | |
1037 | vol->rsize = | |
1038 | simple_strtoul(value, &value, 0); | |
1039 | } | |
1040 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1041 | if (value && *value) { | |
1042 | vol->wsize = | |
1043 | simple_strtoul(value, &value, 0); | |
1044 | } | |
1045 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1046 | if (value && *value) { | |
1047 | vol->sockopt = | |
1048 | simple_strtoul(value, &value, 0); | |
1049 | } | |
1050 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1051 | if (!value || !*value || (*value == ' ')) { | |
1052 | cFYI(1,("invalid (empty) netbiosname specified")); | |
1053 | } else { | |
1054 | memset(vol->source_rfc1001_name,0x20,15); | |
1055 | for(i=0;i<15;i++) { | |
1056 | /* BB are there cases in which a comma can be | |
1057 | valid in this workstation netbios name (and need | |
1058 | special handling)? */ | |
1059 | ||
1060 | /* We do not uppercase netbiosname for user */ | |
1061 | if (value[i]==0) | |
1062 | break; | |
1063 | else | |
1064 | vol->source_rfc1001_name[i] = value[i]; | |
1065 | } | |
1066 | /* The string has 16th byte zero still from | |
1067 | set at top of the function */ | |
1068 | if((i==15) && (value[i] != 0)) | |
a10faeb2 SF |
1069 | printk(KERN_WARNING "CIFS: netbiosname longer than 15 truncated.\n"); |
1070 | } | |
1071 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1072 | /* servernetbiosname specified override *SMBSERVER */ | |
1073 | if (!value || !*value || (*value == ' ')) { | |
1074 | cFYI(1,("empty server netbiosname specified")); | |
1075 | } else { | |
1076 | /* last byte, type, is 0x20 for servr type */ | |
1077 | memset(vol->target_rfc1001_name,0x20,16); | |
1078 | ||
1079 | for(i=0;i<15;i++) { | |
1080 | /* BB are there cases in which a comma can be | |
1081 | valid in this workstation netbios name (and need | |
1082 | special handling)? */ | |
1083 | ||
1084 | /* user or mount helper must uppercase netbiosname */ | |
1085 | if (value[i]==0) | |
1086 | break; | |
1087 | else | |
1088 | vol->target_rfc1001_name[i] = value[i]; | |
1089 | } | |
1090 | /* The string has 16th byte zero still from | |
1091 | set at top of the function */ | |
1092 | if((i==15) && (value[i] != 0)) | |
1093 | printk(KERN_WARNING "CIFS: server netbiosname longer than 15 truncated.\n"); | |
1da177e4 LT |
1094 | } |
1095 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1096 | /* ignore */ | |
1097 | } else if (strnicmp(data, "version", 3) == 0) { | |
1098 | /* ignore */ | |
1099 | } else if (strnicmp(data, "guest",5) == 0) { | |
1100 | /* ignore */ | |
1101 | } else if (strnicmp(data, "rw", 2) == 0) { | |
1102 | vol->rw = TRUE; | |
1103 | } else if ((strnicmp(data, "suid", 4) == 0) || | |
1104 | (strnicmp(data, "nosuid", 6) == 0) || | |
1105 | (strnicmp(data, "exec", 4) == 0) || | |
1106 | (strnicmp(data, "noexec", 6) == 0) || | |
1107 | (strnicmp(data, "nodev", 5) == 0) || | |
1108 | (strnicmp(data, "noauto", 6) == 0) || | |
1109 | (strnicmp(data, "dev", 3) == 0)) { | |
1110 | /* The mount tool or mount.cifs helper (if present) | |
1111 | uses these opts to set flags, and the flags are read | |
1112 | by the kernel vfs layer before we get here (ie | |
1113 | before read super) so there is no point trying to | |
1114 | parse these options again and set anything and it | |
1115 | is ok to just ignore them */ | |
1116 | continue; | |
1117 | } else if (strnicmp(data, "ro", 2) == 0) { | |
1118 | vol->rw = FALSE; | |
1119 | } else if (strnicmp(data, "hard", 4) == 0) { | |
1120 | vol->retry = 1; | |
1121 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1122 | vol->retry = 0; | |
1123 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1124 | vol->noperm = 0; | |
1125 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1126 | vol->noperm = 1; | |
6a0b4824 SF |
1127 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1128 | vol->remap = 1; | |
1129 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1130 | vol->remap = 0; | |
d7245c2c SF |
1131 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1132 | vol->sfu_emul = 1; | |
1133 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1134 | vol->sfu_emul = 0; | |
ac67055e JA |
1135 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1136 | vol->posix_paths = 1; | |
1137 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1138 | vol->posix_paths = 0; | |
a10faeb2 SF |
1139 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
1140 | (strnicmp(data, "ignorecase", 10) == 0)) { | |
c46fa8ac SF |
1141 | vol->nocase = 1; |
1142 | } else if (strnicmp(data, "brl", 3) == 0) { | |
1143 | vol->nobrl = 0; | |
cb8be640 | 1144 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1145 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1146 | vol->nobrl = 1; |
d3485d37 SF |
1147 | /* turn off mandatory locking in mode |
1148 | if remote locking is turned off since the | |
1149 | local vfs will do advisory */ | |
1150 | if(vol->file_mode == (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
1151 | vol->file_mode = S_IALLUGO; | |
1da177e4 LT |
1152 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1153 | vol->setuids = 1; | |
1154 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1155 | vol->setuids = 0; | |
1156 | } else if (strnicmp(data, "nohard", 6) == 0) { | |
1157 | vol->retry = 0; | |
1158 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1159 | vol->retry = 1; | |
1160 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1161 | vol->intr = 0; | |
1162 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1163 | vol->intr = 1; | |
1164 | } else if (strnicmp(data, "serverino",7) == 0) { | |
1165 | vol->server_ino = 1; | |
1166 | } else if (strnicmp(data, "noserverino",9) == 0) { | |
1167 | vol->server_ino = 0; | |
0a4b92c0 SF |
1168 | } else if (strnicmp(data, "cifsacl",7) == 0) { |
1169 | vol->cifs_acl = 1; | |
1170 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1171 | vol->cifs_acl = 0; | |
1da177e4 LT |
1172 | } else if (strnicmp(data, "acl",3) == 0) { |
1173 | vol->no_psx_acl = 0; | |
1174 | } else if (strnicmp(data, "noacl",5) == 0) { | |
1175 | vol->no_psx_acl = 1; | |
750d1151 SF |
1176 | } else if (strnicmp(data, "sign",4) == 0) { |
1177 | vol->secFlg |= CIFSSEC_MUST_SIGN; | |
1178 | /* } else if (strnicmp(data, "seal",4) == 0) { | |
1179 | vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
1da177e4 LT |
1180 | } else if (strnicmp(data, "direct",6) == 0) { |
1181 | vol->direct_io = 1; | |
1182 | } else if (strnicmp(data, "forcedirectio",13) == 0) { | |
1183 | vol->direct_io = 1; | |
1184 | } else if (strnicmp(data, "in6_addr",8) == 0) { | |
1185 | if (!value || !*value) { | |
1186 | vol->in6_addr = NULL; | |
1187 | } else if (strnlen(value, 49) == 48) { | |
1188 | vol->in6_addr = value; | |
1189 | } else { | |
1190 | printk(KERN_WARNING "CIFS: ip v6 address not 48 characters long\n"); | |
1191 | return 1; | |
1192 | } | |
1193 | } else if (strnicmp(data, "noac", 4) == 0) { | |
1194 | printk(KERN_WARNING "CIFS: Mount option noac not supported. Instead set /proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1195 | } else | |
1196 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n",data); | |
1197 | } | |
1198 | if (vol->UNC == NULL) { | |
1199 | if(devname == NULL) { | |
1200 | printk(KERN_WARNING "CIFS: Missing UNC name for mount target\n"); | |
1201 | return 1; | |
1202 | } | |
1203 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
1204 | vol->UNC = kmalloc(temp_len+1,GFP_KERNEL); | |
1205 | if(vol->UNC == NULL) | |
1206 | return 1; | |
1207 | strcpy(vol->UNC,devname); | |
1208 | if (strncmp(vol->UNC, "//", 2) == 0) { | |
1209 | vol->UNC[0] = '\\'; | |
1210 | vol->UNC[1] = '\\'; | |
1211 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
1212 | printk(KERN_WARNING "CIFS: UNC Path does not begin with // or \\\\ \n"); | |
1213 | return 1; | |
1214 | } | |
1215 | } else { | |
1216 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1217 | return 1; | |
1218 | } | |
1219 | } | |
1220 | if(vol->UNCip == NULL) | |
1221 | vol->UNCip = &vol->UNC[2]; | |
1222 | ||
1223 | return 0; | |
1224 | } | |
1225 | ||
1226 | static struct cifsSesInfo * | |
1227 | cifs_find_tcp_session(struct in_addr * target_ip_addr, | |
1228 | struct in6_addr *target_ip6_addr, | |
1229 | char *userName, struct TCP_Server_Info **psrvTcp) | |
1230 | { | |
1231 | struct list_head *tmp; | |
1232 | struct cifsSesInfo *ses; | |
1233 | *psrvTcp = NULL; | |
1234 | read_lock(&GlobalSMBSeslock); | |
1235 | ||
1236 | list_for_each(tmp, &GlobalSMBSessionList) { | |
1237 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
1238 | if (ses->server) { | |
1239 | if((target_ip_addr && | |
1240 | (ses->server->addr.sockAddr.sin_addr.s_addr | |
1241 | == target_ip_addr->s_addr)) || (target_ip6_addr | |
1242 | && memcmp(&ses->server->addr.sockAddr6.sin6_addr, | |
1243 | target_ip6_addr,sizeof(*target_ip6_addr)))){ | |
1244 | /* BB lock server and tcp session and increment use count here?? */ | |
1245 | *psrvTcp = ses->server; /* found a match on the TCP session */ | |
1246 | /* BB check if reconnection needed */ | |
1247 | if (strncmp | |
1248 | (ses->userName, userName, | |
1249 | MAX_USERNAME_SIZE) == 0){ | |
1250 | read_unlock(&GlobalSMBSeslock); | |
1251 | return ses; /* found exact match on both tcp and SMB sessions */ | |
1252 | } | |
1253 | } | |
1254 | } | |
1255 | /* else tcp and smb sessions need reconnection */ | |
1256 | } | |
1257 | read_unlock(&GlobalSMBSeslock); | |
1258 | return NULL; | |
1259 | } | |
1260 | ||
1261 | static struct cifsTconInfo * | |
1262 | find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) | |
1263 | { | |
1264 | struct list_head *tmp; | |
1265 | struct cifsTconInfo *tcon; | |
1266 | ||
1267 | read_lock(&GlobalSMBSeslock); | |
1268 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
1269 | cFYI(1, ("Next tcon - ")); | |
1270 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); | |
1271 | if (tcon->ses) { | |
1272 | if (tcon->ses->server) { | |
1273 | cFYI(1, | |
1274 | (" old ip addr: %x == new ip %x ?", | |
1275 | tcon->ses->server->addr.sockAddr.sin_addr. | |
1276 | s_addr, new_target_ip_addr)); | |
1277 | if (tcon->ses->server->addr.sockAddr.sin_addr. | |
1278 | s_addr == new_target_ip_addr) { | |
1279 | /* BB lock tcon and server and tcp session and increment use count here? */ | |
1280 | /* found a match on the TCP session */ | |
1281 | /* BB check if reconnection needed */ | |
1282 | cFYI(1,("Matched ip, old UNC: %s == new: %s ?", | |
1283 | tcon->treeName, uncName)); | |
1284 | if (strncmp | |
1285 | (tcon->treeName, uncName, | |
1286 | MAX_TREE_SIZE) == 0) { | |
1287 | cFYI(1, | |
1288 | ("Matched UNC, old user: %s == new: %s ?", | |
1289 | tcon->treeName, uncName)); | |
1290 | if (strncmp | |
1291 | (tcon->ses->userName, | |
1292 | userName, | |
1293 | MAX_USERNAME_SIZE) == 0) { | |
1294 | read_unlock(&GlobalSMBSeslock); | |
1295 | return tcon;/* also matched user (smb session)*/ | |
1296 | } | |
1297 | } | |
1298 | } | |
1299 | } | |
1300 | } | |
1301 | } | |
1302 | read_unlock(&GlobalSMBSeslock); | |
1303 | return NULL; | |
1304 | } | |
1305 | ||
1306 | int | |
1307 | connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo, | |
737b758c SF |
1308 | const char *old_path, const struct nls_table *nls_codepage, |
1309 | int remap) | |
1da177e4 LT |
1310 | { |
1311 | unsigned char *referrals = NULL; | |
1312 | unsigned int num_referrals; | |
1313 | int rc = 0; | |
1314 | ||
1315 | rc = get_dfs_path(xid, pSesInfo,old_path, nls_codepage, | |
737b758c | 1316 | &num_referrals, &referrals, remap); |
1da177e4 LT |
1317 | |
1318 | /* BB Add in code to: if valid refrl, if not ip address contact | |
1319 | the helper that resolves tcp names, mount to it, try to | |
1320 | tcon to it unmount it if fail */ | |
1321 | ||
f99d49ad | 1322 | kfree(referrals); |
1da177e4 LT |
1323 | |
1324 | return rc; | |
1325 | } | |
1326 | ||
1327 | int | |
1328 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, | |
1329 | const char *old_path, const struct nls_table *nls_codepage, | |
737b758c SF |
1330 | unsigned int *pnum_referrals, |
1331 | unsigned char ** preferrals, int remap) | |
1da177e4 LT |
1332 | { |
1333 | char *temp_unc; | |
1334 | int rc = 0; | |
1335 | ||
1336 | *pnum_referrals = 0; | |
1337 | ||
1338 | if (pSesInfo->ipc_tid == 0) { | |
1339 | temp_unc = kmalloc(2 /* for slashes */ + | |
1340 | strnlen(pSesInfo->serverName,SERVER_NAME_LEN_WITH_NULL * 2) | |
1341 | + 1 + 4 /* slash IPC$ */ + 2, | |
1342 | GFP_KERNEL); | |
1343 | if (temp_unc == NULL) | |
1344 | return -ENOMEM; | |
1345 | temp_unc[0] = '\\'; | |
1346 | temp_unc[1] = '\\'; | |
1347 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1348 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1349 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1350 | cFYI(1, | |
1351 | ("CIFS Tcon rc = %d ipc_tid = %d", rc,pSesInfo->ipc_tid)); | |
1352 | kfree(temp_unc); | |
1353 | } | |
1354 | if (rc == 0) | |
1355 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, | |
737b758c | 1356 | pnum_referrals, nls_codepage, remap); |
1da177e4 LT |
1357 | |
1358 | return rc; | |
1359 | } | |
1360 | ||
1361 | /* See RFC1001 section 14 on representation of Netbios names */ | |
1362 | static void rfc1002mangle(char * target,char * source, unsigned int length) | |
1363 | { | |
1364 | unsigned int i,j; | |
1365 | ||
1366 | for(i=0,j=0;i<(length);i++) { | |
1367 | /* mask a nibble at a time and encode */ | |
1368 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1369 | target[j+1] = 'A' + (0x0F & source[i]); | |
1370 | j+=2; | |
1371 | } | |
1372 | ||
1373 | } | |
1374 | ||
1375 | ||
1376 | static int | |
1377 | ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, | |
a10faeb2 | 1378 | char * netbios_name, char * target_name) |
1da177e4 LT |
1379 | { |
1380 | int rc = 0; | |
1381 | int connected = 0; | |
1382 | __be16 orig_port = 0; | |
1383 | ||
1384 | if(*csocket == NULL) { | |
1385 | rc = sock_create_kern(PF_INET, SOCK_STREAM, IPPROTO_TCP, csocket); | |
1386 | if (rc < 0) { | |
1387 | cERROR(1, ("Error %d creating socket",rc)); | |
1388 | *csocket = NULL; | |
1389 | return rc; | |
1390 | } else { | |
1391 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1392 | cFYI(1,("Socket created")); | |
1393 | (*csocket)->sk->sk_allocation = GFP_NOFS; | |
1394 | } | |
1395 | } | |
1396 | ||
1397 | psin_server->sin_family = AF_INET; | |
1398 | if(psin_server->sin_port) { /* user overrode default port */ | |
1399 | rc = (*csocket)->ops->connect(*csocket, | |
1400 | (struct sockaddr *) psin_server, | |
1401 | sizeof (struct sockaddr_in),0); | |
1402 | if (rc >= 0) | |
1403 | connected = 1; | |
1404 | } | |
1405 | ||
1406 | if(!connected) { | |
1407 | /* save original port so we can retry user specified port | |
1408 | later if fall back ports fail this time */ | |
1409 | orig_port = psin_server->sin_port; | |
1410 | ||
1411 | /* do not retry on the same port we just failed on */ | |
1412 | if(psin_server->sin_port != htons(CIFS_PORT)) { | |
1413 | psin_server->sin_port = htons(CIFS_PORT); | |
1414 | ||
1415 | rc = (*csocket)->ops->connect(*csocket, | |
1416 | (struct sockaddr *) psin_server, | |
1417 | sizeof (struct sockaddr_in),0); | |
1418 | if (rc >= 0) | |
1419 | connected = 1; | |
1420 | } | |
1421 | } | |
1422 | if (!connected) { | |
1423 | psin_server->sin_port = htons(RFC1001_PORT); | |
1424 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
1425 | psin_server, sizeof (struct sockaddr_in),0); | |
1426 | if (rc >= 0) | |
1427 | connected = 1; | |
1428 | } | |
1429 | ||
1430 | /* give up here - unless we want to retry on different | |
1431 | protocol families some day */ | |
1432 | if (!connected) { | |
1433 | if(orig_port) | |
1434 | psin_server->sin_port = orig_port; | |
1435 | cFYI(1,("Error %d connecting to server via ipv4",rc)); | |
1436 | sock_release(*csocket); | |
1437 | *csocket = NULL; | |
1438 | return rc; | |
1439 | } | |
1440 | /* Eventually check for other socket options to change from | |
1441 | the default. sock_setsockopt not used because it expects | |
1442 | user space buffer */ | |
b387eaeb SF |
1443 | cFYI(1,("sndbuf %d rcvbuf %d rcvtimeo 0x%lx",(*csocket)->sk->sk_sndbuf, |
1444 | (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo)); | |
1da177e4 | 1445 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; |
b387eaeb SF |
1446 | /* make the bufsizes depend on wsize/rsize and max requests */ |
1447 | if((*csocket)->sk->sk_sndbuf < (200 * 1024)) | |
1448 | (*csocket)->sk->sk_sndbuf = 200 * 1024; | |
1449 | if((*csocket)->sk->sk_rcvbuf < (140 * 1024)) | |
1450 | (*csocket)->sk->sk_rcvbuf = 140 * 1024; | |
1da177e4 LT |
1451 | |
1452 | /* send RFC1001 sessinit */ | |
1da177e4 LT |
1453 | if(psin_server->sin_port == htons(RFC1001_PORT)) { |
1454 | /* some servers require RFC1001 sessinit before sending | |
1455 | negprot - BB check reconnection in case where second | |
1456 | sessinit is sent but no second negprot */ | |
1457 | struct rfc1002_session_packet * ses_init_buf; | |
1458 | struct smb_hdr * smb_buf; | |
e915fc49 | 1459 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), GFP_KERNEL); |
1da177e4 LT |
1460 | if(ses_init_buf) { |
1461 | ses_init_buf->trailer.session_req.called_len = 32; | |
a10faeb2 SF |
1462 | if(target_name && (target_name[0] != 0)) { |
1463 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
1464 | target_name, 16); | |
1465 | } else { | |
1466 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
1467 | DEFAULT_CIFS_CALLED_NAME,16); | |
1468 | } | |
1469 | ||
1da177e4 LT |
1470 | ses_init_buf->trailer.session_req.calling_len = 32; |
1471 | /* calling name ends in null (byte 16) from old smb | |
1472 | convention. */ | |
1473 | if(netbios_name && (netbios_name[0] !=0)) { | |
1474 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
1475 | netbios_name,16); | |
1476 | } else { | |
1477 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
1478 | "LINUX_CIFS_CLNT",16); | |
1479 | } | |
1480 | ses_init_buf->trailer.session_req.scope1 = 0; | |
1481 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1482 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1483 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1484 | smb_buf->smb_buf_length = 0x81000044; | |
1485 | rc = smb_send(*csocket, smb_buf, 0x44, | |
1486 | (struct sockaddr *)psin_server); | |
1487 | kfree(ses_init_buf); | |
083d3a2c SF |
1488 | msleep(1); /* RFC1001 layer in at least one server |
1489 | requires very short break before negprot | |
1490 | presumably because not expecting negprot | |
1491 | to follow so fast. This is a simple | |
1492 | solution that works without | |
1493 | complicating the code and causes no | |
1494 | significant slowing down on mount | |
1495 | for everyone else */ | |
1da177e4 LT |
1496 | } |
1497 | /* else the negprot may still work without this | |
1498 | even though malloc failed */ | |
1499 | ||
1500 | } | |
1501 | ||
1502 | return rc; | |
1503 | } | |
1504 | ||
1505 | static int | |
1506 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket) | |
1507 | { | |
1508 | int rc = 0; | |
1509 | int connected = 0; | |
1510 | __be16 orig_port = 0; | |
1511 | ||
1512 | if(*csocket == NULL) { | |
1513 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, IPPROTO_TCP, csocket); | |
1514 | if (rc < 0) { | |
1515 | cERROR(1, ("Error %d creating ipv6 socket",rc)); | |
1516 | *csocket = NULL; | |
1517 | return rc; | |
1518 | } else { | |
1519 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1520 | cFYI(1,("ipv6 Socket created")); | |
1521 | (*csocket)->sk->sk_allocation = GFP_NOFS; | |
1522 | } | |
1523 | } | |
1524 | ||
1525 | psin_server->sin6_family = AF_INET6; | |
1526 | ||
1527 | if(psin_server->sin6_port) { /* user overrode default port */ | |
1528 | rc = (*csocket)->ops->connect(*csocket, | |
1529 | (struct sockaddr *) psin_server, | |
1530 | sizeof (struct sockaddr_in6),0); | |
1531 | if (rc >= 0) | |
1532 | connected = 1; | |
1533 | } | |
1534 | ||
1535 | if(!connected) { | |
1536 | /* save original port so we can retry user specified port | |
1537 | later if fall back ports fail this time */ | |
1538 | ||
1539 | orig_port = psin_server->sin6_port; | |
1540 | /* do not retry on the same port we just failed on */ | |
1541 | if(psin_server->sin6_port != htons(CIFS_PORT)) { | |
1542 | psin_server->sin6_port = htons(CIFS_PORT); | |
1543 | ||
1544 | rc = (*csocket)->ops->connect(*csocket, | |
1545 | (struct sockaddr *) psin_server, | |
1546 | sizeof (struct sockaddr_in6),0); | |
1547 | if (rc >= 0) | |
1548 | connected = 1; | |
1549 | } | |
1550 | } | |
1551 | if (!connected) { | |
1552 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1553 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
1554 | psin_server, sizeof (struct sockaddr_in6),0); | |
1555 | if (rc >= 0) | |
1556 | connected = 1; | |
1557 | } | |
1558 | ||
1559 | /* give up here - unless we want to retry on different | |
1560 | protocol families some day */ | |
1561 | if (!connected) { | |
1562 | if(orig_port) | |
1563 | psin_server->sin6_port = orig_port; | |
1564 | cFYI(1,("Error %d connecting to server via ipv6",rc)); | |
1565 | sock_release(*csocket); | |
1566 | *csocket = NULL; | |
1567 | return rc; | |
1568 | } | |
1569 | /* Eventually check for other socket options to change from | |
1570 | the default. sock_setsockopt not used because it expects | |
1571 | user space buffer */ | |
1572 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
1573 | ||
1574 | return rc; | |
1575 | } | |
1576 | ||
1577 | int | |
1578 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1579 | char *mount_data, const char *devname) | |
1580 | { | |
1581 | int rc = 0; | |
1582 | int xid; | |
1583 | int address_type = AF_INET; | |
1584 | struct socket *csocket = NULL; | |
1585 | struct sockaddr_in sin_server; | |
1586 | struct sockaddr_in6 sin_server6; | |
1587 | struct smb_vol volume_info; | |
1588 | struct cifsSesInfo *pSesInfo = NULL; | |
1589 | struct cifsSesInfo *existingCifsSes = NULL; | |
1590 | struct cifsTconInfo *tcon = NULL; | |
1591 | struct TCP_Server_Info *srvTcp = NULL; | |
1592 | ||
1593 | xid = GetXid(); | |
1594 | ||
1595 | /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ | |
1596 | ||
1597 | memset(&volume_info,0,sizeof(struct smb_vol)); | |
1598 | if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { | |
f99d49ad JJ |
1599 | kfree(volume_info.UNC); |
1600 | kfree(volume_info.password); | |
1da177e4 LT |
1601 | FreeXid(xid); |
1602 | return -EINVAL; | |
1603 | } | |
1604 | ||
1605 | if (volume_info.username) { | |
1606 | /* BB fixme parse for domain name here */ | |
1607 | cFYI(1, ("Username: %s ", volume_info.username)); | |
1608 | ||
1609 | } else { | |
bf820679 | 1610 | cifserror("No username specified"); |
1da177e4 LT |
1611 | /* In userspace mount helper we can get user name from alternate |
1612 | locations such as env variables and files on disk */ | |
f99d49ad JJ |
1613 | kfree(volume_info.UNC); |
1614 | kfree(volume_info.password); | |
1da177e4 LT |
1615 | FreeXid(xid); |
1616 | return -EINVAL; | |
1617 | } | |
1618 | ||
1619 | if (volume_info.UNCip && volume_info.UNC) { | |
1620 | rc = cifs_inet_pton(AF_INET, volume_info.UNCip,&sin_server.sin_addr.s_addr); | |
1621 | ||
1622 | if(rc <= 0) { | |
1623 | /* not ipv4 address, try ipv6 */ | |
1624 | rc = cifs_inet_pton(AF_INET6,volume_info.UNCip,&sin_server6.sin6_addr.in6_u); | |
1625 | if(rc > 0) | |
1626 | address_type = AF_INET6; | |
1627 | } else { | |
1628 | address_type = AF_INET; | |
1629 | } | |
1630 | ||
1631 | if(rc <= 0) { | |
1632 | /* we failed translating address */ | |
f99d49ad JJ |
1633 | kfree(volume_info.UNC); |
1634 | kfree(volume_info.password); | |
1da177e4 LT |
1635 | FreeXid(xid); |
1636 | return -EINVAL; | |
1637 | } | |
1638 | ||
1639 | cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); | |
1640 | /* success */ | |
1641 | rc = 0; | |
1642 | } else if (volume_info.UNCip){ | |
1643 | /* BB using ip addr as server name connect to the DFS root below */ | |
1644 | cERROR(1,("Connecting to DFS root not implemented yet")); | |
f99d49ad JJ |
1645 | kfree(volume_info.UNC); |
1646 | kfree(volume_info.password); | |
1da177e4 LT |
1647 | FreeXid(xid); |
1648 | return -EINVAL; | |
1649 | } else /* which servers DFS root would we conect to */ { | |
1650 | cERROR(1, | |
bf820679 | 1651 | ("CIFS mount error: No UNC path (e.g. -o unc=//192.168.1.100/public) specified")); |
f99d49ad JJ |
1652 | kfree(volume_info.UNC); |
1653 | kfree(volume_info.password); | |
1da177e4 LT |
1654 | FreeXid(xid); |
1655 | return -EINVAL; | |
1656 | } | |
1657 | ||
1658 | /* this is needed for ASCII cp to Unicode converts */ | |
1659 | if(volume_info.iocharset == NULL) { | |
1660 | cifs_sb->local_nls = load_nls_default(); | |
1661 | /* load_nls_default can not return null */ | |
1662 | } else { | |
1663 | cifs_sb->local_nls = load_nls(volume_info.iocharset); | |
1664 | if(cifs_sb->local_nls == NULL) { | |
1665 | cERROR(1,("CIFS mount error: iocharset %s not found",volume_info.iocharset)); | |
f99d49ad JJ |
1666 | kfree(volume_info.UNC); |
1667 | kfree(volume_info.password); | |
1da177e4 LT |
1668 | FreeXid(xid); |
1669 | return -ELIBACC; | |
1670 | } | |
1671 | } | |
1672 | ||
1673 | if(address_type == AF_INET) | |
1674 | existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr, | |
1675 | NULL /* no ipv6 addr */, | |
1676 | volume_info.username, &srvTcp); | |
1677 | else if(address_type == AF_INET6) | |
1678 | existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */, | |
1679 | &sin_server6.sin6_addr, | |
1680 | volume_info.username, &srvTcp); | |
1681 | else { | |
f99d49ad JJ |
1682 | kfree(volume_info.UNC); |
1683 | kfree(volume_info.password); | |
1da177e4 LT |
1684 | FreeXid(xid); |
1685 | return -EINVAL; | |
1686 | } | |
1687 | ||
1688 | ||
1689 | if (srvTcp) { | |
bf820679 | 1690 | cFYI(1, ("Existing tcp session with server found")); |
1da177e4 LT |
1691 | } else { /* create socket */ |
1692 | if(volume_info.port) | |
1693 | sin_server.sin_port = htons(volume_info.port); | |
1694 | else | |
1695 | sin_server.sin_port = 0; | |
a10faeb2 SF |
1696 | rc = ipv4_connect(&sin_server,&csocket, |
1697 | volume_info.source_rfc1001_name, | |
1698 | volume_info.target_rfc1001_name); | |
1da177e4 LT |
1699 | if (rc < 0) { |
1700 | cERROR(1, | |
1701 | ("Error connecting to IPv4 socket. Aborting operation")); | |
1702 | if(csocket != NULL) | |
1703 | sock_release(csocket); | |
f99d49ad JJ |
1704 | kfree(volume_info.UNC); |
1705 | kfree(volume_info.password); | |
1da177e4 LT |
1706 | FreeXid(xid); |
1707 | return rc; | |
1708 | } | |
1709 | ||
1710 | srvTcp = kmalloc(sizeof (struct TCP_Server_Info), GFP_KERNEL); | |
1711 | if (srvTcp == NULL) { | |
1712 | rc = -ENOMEM; | |
1713 | sock_release(csocket); | |
f99d49ad JJ |
1714 | kfree(volume_info.UNC); |
1715 | kfree(volume_info.password); | |
1da177e4 LT |
1716 | FreeXid(xid); |
1717 | return rc; | |
1718 | } else { | |
1719 | memset(srvTcp, 0, sizeof (struct TCP_Server_Info)); | |
1720 | memcpy(&srvTcp->addr.sockAddr, &sin_server, sizeof (struct sockaddr_in)); | |
1721 | atomic_set(&srvTcp->inFlight,0); | |
1722 | /* BB Add code for ipv6 case too */ | |
1723 | srvTcp->ssocket = csocket; | |
1724 | srvTcp->protocolType = IPV4; | |
1725 | init_waitqueue_head(&srvTcp->response_q); | |
1726 | init_waitqueue_head(&srvTcp->request_q); | |
1727 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
1728 | /* at this point we are the only ones with the pointer | |
1729 | to the struct since the kernel thread not created yet | |
1730 | so no need to spinlock this init of tcpStatus */ | |
1731 | srvTcp->tcpStatus = CifsNew; | |
1732 | init_MUTEX(&srvTcp->tcpSem); | |
1733 | rc = (int)kernel_thread((void *)(void *)cifs_demultiplex_thread, srvTcp, | |
1734 | CLONE_FS | CLONE_FILES | CLONE_VM); | |
1735 | if(rc < 0) { | |
1736 | rc = -ENOMEM; | |
1737 | sock_release(csocket); | |
f99d49ad JJ |
1738 | kfree(volume_info.UNC); |
1739 | kfree(volume_info.password); | |
1da177e4 LT |
1740 | FreeXid(xid); |
1741 | return rc; | |
f191401f SF |
1742 | } |
1743 | wait_for_completion(&cifsd_complete); | |
1744 | rc = 0; | |
1da177e4 | 1745 | memcpy(srvTcp->workstation_RFC1001_name, volume_info.source_rfc1001_name,16); |
a10faeb2 | 1746 | memcpy(srvTcp->server_RFC1001_name, volume_info.target_rfc1001_name,16); |
ad009ac9 | 1747 | srvTcp->sequence_number = 0; |
1da177e4 LT |
1748 | } |
1749 | } | |
1750 | ||
1751 | if (existingCifsSes) { | |
1752 | pSesInfo = existingCifsSes; | |
bf820679 | 1753 | cFYI(1, ("Existing smb sess found")); |
f99d49ad | 1754 | kfree(volume_info.password); |
1da177e4 LT |
1755 | /* volume_info.UNC freed at end of function */ |
1756 | } else if (!rc) { | |
bf820679 | 1757 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 LT |
1758 | pSesInfo = sesInfoAlloc(); |
1759 | if (pSesInfo == NULL) | |
1760 | rc = -ENOMEM; | |
1761 | else { | |
1762 | pSesInfo->server = srvTcp; | |
1763 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
1764 | NIPQUAD(sin_server.sin_addr.s_addr)); | |
1765 | } | |
1766 | ||
1767 | if (!rc){ | |
1768 | /* volume_info.password freed at unmount */ | |
1769 | if (volume_info.password) | |
1770 | pSesInfo->password = volume_info.password; | |
1771 | if (volume_info.username) | |
1772 | strncpy(pSesInfo->userName, | |
1773 | volume_info.username,MAX_USERNAME_SIZE); | |
3979877e SF |
1774 | if (volume_info.domainname) { |
1775 | int len = strlen(volume_info.domainname); | |
1776 | pSesInfo->domainName = | |
1777 | kmalloc(len + 1, GFP_KERNEL); | |
1778 | if(pSesInfo->domainName) | |
1779 | strcpy(pSesInfo->domainName, | |
1780 | volume_info.domainname); | |
1781 | } | |
1da177e4 | 1782 | pSesInfo->linux_uid = volume_info.linux_uid; |
750d1151 | 1783 | pSesInfo->overrideSecFlg = volume_info.secFlg; |
1da177e4 | 1784 | down(&pSesInfo->sesSem); |
189acaae | 1785 | /* BB FIXME need to pass vol->secFlgs BB */ |
1da177e4 LT |
1786 | rc = cifs_setup_session(xid,pSesInfo, cifs_sb->local_nls); |
1787 | up(&pSesInfo->sesSem); | |
1788 | if(!rc) | |
1789 | atomic_inc(&srvTcp->socketUseCount); | |
1790 | } else | |
f99d49ad | 1791 | kfree(volume_info.password); |
1da177e4 LT |
1792 | } |
1793 | ||
1794 | /* search for existing tcon to this server share */ | |
1795 | if (!rc) { | |
0ae0efad SF |
1796 | if(volume_info.rsize > CIFSMaxBufSize) { |
1797 | cERROR(1,("rsize %d too large, using MaxBufSize", | |
1798 | volume_info.rsize)); | |
1799 | cifs_sb->rsize = CIFSMaxBufSize; | |
1800 | } else if((volume_info.rsize) && (volume_info.rsize <= CIFSMaxBufSize)) | |
1da177e4 | 1801 | cifs_sb->rsize = volume_info.rsize; |
0ae0efad SF |
1802 | else /* default */ |
1803 | cifs_sb->rsize = CIFSMaxBufSize; | |
1804 | ||
1805 | if(volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { | |
1806 | cERROR(1,("wsize %d too large using 4096 instead", | |
1807 | volume_info.wsize)); | |
1808 | cifs_sb->wsize = 4096; | |
1809 | } else if(volume_info.wsize) | |
1da177e4 LT |
1810 | cifs_sb->wsize = volume_info.wsize; |
1811 | else | |
17cbbafe | 1812 | cifs_sb->wsize = |
1877c9ea SF |
1813 | min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE, |
1814 | 127*1024); | |
17cbbafe SF |
1815 | /* old default of CIFSMaxBufSize was too small now |
1816 | that SMB Write2 can send multiple pages in kvec. | |
1817 | RFC1001 does not describe what happens when frame | |
1818 | bigger than 128K is sent so use that as max in | |
1819 | conjunction with 52K kvec constraint on arch with 4K | |
1820 | page size */ | |
1821 | ||
6cec2aed SF |
1822 | if(cifs_sb->rsize < 2048) { |
1823 | cifs_sb->rsize = 2048; | |
1824 | /* Windows ME may prefer this */ | |
1825 | cFYI(1,("readsize set to minimum 2048")); | |
1da177e4 LT |
1826 | } |
1827 | cifs_sb->mnt_uid = volume_info.linux_uid; | |
1828 | cifs_sb->mnt_gid = volume_info.linux_gid; | |
1829 | cifs_sb->mnt_file_mode = volume_info.file_mode; | |
1830 | cifs_sb->mnt_dir_mode = volume_info.dir_mode; | |
eeac8047 SF |
1831 | cFYI(1,("file mode: 0x%x dir mode: 0x%x", |
1832 | cifs_sb->mnt_file_mode,cifs_sb->mnt_dir_mode)); | |
1da177e4 LT |
1833 | |
1834 | if(volume_info.noperm) | |
1835 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; | |
1836 | if(volume_info.setuids) | |
1837 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; | |
1838 | if(volume_info.server_ino) | |
1839 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; | |
6a0b4824 SF |
1840 | if(volume_info.remap) |
1841 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; | |
1da177e4 LT |
1842 | if(volume_info.no_xattr) |
1843 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; | |
d7245c2c SF |
1844 | if(volume_info.sfu_emul) |
1845 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; | |
c46fa8ac SF |
1846 | if(volume_info.nobrl) |
1847 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; | |
0a4b92c0 SF |
1848 | if(volume_info.cifs_acl) |
1849 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; | |
ac67055e | 1850 | |
1da177e4 | 1851 | if(volume_info.direct_io) { |
c46fa8ac | 1852 | cFYI(1,("mounting share using direct i/o")); |
1da177e4 LT |
1853 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
1854 | } | |
1855 | ||
1856 | tcon = | |
1857 | find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, | |
1858 | volume_info.username); | |
1859 | if (tcon) { | |
bf820679 | 1860 | cFYI(1, ("Found match on UNC path")); |
1da177e4 LT |
1861 | /* we can have only one retry value for a connection |
1862 | to a share so for resources mounted more than once | |
1863 | to the same server share the last value passed in | |
1864 | for the retry flag is used */ | |
1865 | tcon->retry = volume_info.retry; | |
d3485d37 | 1866 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
1867 | } else { |
1868 | tcon = tconInfoAlloc(); | |
1869 | if (tcon == NULL) | |
1870 | rc = -ENOMEM; | |
1871 | else { | |
1872 | /* check for null share name ie connect to dfs root */ | |
1873 | ||
1874 | /* BB check if this works for exactly length three strings */ | |
1875 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) | |
1876 | && (strchr(volume_info.UNC + 3, '/') == | |
1877 | NULL)) { | |
737b758c SF |
1878 | rc = connect_to_dfs_path(xid, pSesInfo, |
1879 | "", cifs_sb->local_nls, | |
1880 | cifs_sb->mnt_cifs_flags & | |
1881 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
f99d49ad | 1882 | kfree(volume_info.UNC); |
1da177e4 LT |
1883 | FreeXid(xid); |
1884 | return -ENODEV; | |
1885 | } else { | |
1886 | rc = CIFSTCon(xid, pSesInfo, | |
1887 | volume_info.UNC, | |
1888 | tcon, cifs_sb->local_nls); | |
1889 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
1890 | } | |
1891 | if (!rc) { | |
1892 | atomic_inc(&pSesInfo->inUse); | |
1893 | tcon->retry = volume_info.retry; | |
d3485d37 | 1894 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
1895 | } |
1896 | } | |
1897 | } | |
1898 | } | |
1899 | if(pSesInfo) { | |
1900 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { | |
1901 | sb->s_maxbytes = (u64) 1 << 63; | |
1902 | } else | |
1903 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
1904 | } | |
1905 | ||
1906 | sb->s_time_gran = 100; | |
1907 | ||
1908 | /* on error free sesinfo and tcon struct if needed */ | |
1909 | if (rc) { | |
1910 | /* if session setup failed, use count is zero but | |
1911 | we still need to free cifsd thread */ | |
1912 | if(atomic_read(&srvTcp->socketUseCount) == 0) { | |
1913 | spin_lock(&GlobalMid_Lock); | |
1914 | srvTcp->tcpStatus = CifsExiting; | |
1915 | spin_unlock(&GlobalMid_Lock); | |
f191401f | 1916 | if(srvTcp->tsk) { |
1da177e4 | 1917 | send_sig(SIGKILL,srvTcp->tsk,1); |
f191401f SF |
1918 | wait_for_completion(&cifsd_complete); |
1919 | } | |
1da177e4 LT |
1920 | } |
1921 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
1922 | if (tcon) /* up accidently freeing someone elses tcon struct */ | |
1923 | tconInfoFree(tcon); | |
1924 | if (existingCifsSes == NULL) { | |
1925 | if (pSesInfo) { | |
1926 | if ((pSesInfo->server) && | |
1927 | (pSesInfo->status == CifsGood)) { | |
1928 | int temp_rc; | |
1929 | temp_rc = CIFSSMBLogoff(xid, pSesInfo); | |
1930 | /* if the socketUseCount is now zero */ | |
1931 | if((temp_rc == -ESHUTDOWN) && | |
f191401f | 1932 | (pSesInfo->server->tsk)) { |
1da177e4 | 1933 | send_sig(SIGKILL,pSesInfo->server->tsk,1); |
f191401f SF |
1934 | wait_for_completion(&cifsd_complete); |
1935 | } | |
1da177e4 LT |
1936 | } else |
1937 | cFYI(1, ("No session or bad tcon")); | |
1938 | sesInfoFree(pSesInfo); | |
1939 | /* pSesInfo = NULL; */ | |
1940 | } | |
1941 | } | |
1942 | } else { | |
1943 | atomic_inc(&tcon->useCount); | |
1944 | cifs_sb->tcon = tcon; | |
1945 | tcon->ses = pSesInfo; | |
1946 | ||
82940a46 | 1947 | /* do not care if following two calls succeed - informational */ |
737b758c SF |
1948 | CIFSSMBQFSDeviceInfo(xid, tcon); |
1949 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
82940a46 | 1950 | |
1da177e4 | 1951 | if (tcon->ses->capabilities & CAP_UNIX) { |
737b758c | 1952 | if(!CIFSSMBQFSUnixInfo(xid, tcon)) { |
82940a46 SF |
1953 | __u64 cap = |
1954 | le64_to_cpu(tcon->fsUnixInfo.Capability); | |
1955 | cap &= CIFS_UNIX_CAP_MASK; | |
1956 | if(volume_info.no_psx_acl) | |
1957 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
1958 | else if(CIFS_UNIX_POSIX_ACL_CAP & cap) { | |
1959 | cFYI(1,("negotiated posix acl support")); | |
1960 | sb->s_flags |= MS_POSIXACL; | |
1da177e4 | 1961 | } |
ac67055e | 1962 | |
82940a46 SF |
1963 | if(volume_info.posix_paths == 0) |
1964 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; | |
1965 | else if(cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { | |
1966 | cFYI(1,("negotiate posix pathnames")); | |
1967 | cifs_sb->mnt_cifs_flags |= | |
1968 | CIFS_MOUNT_POSIX_PATHS; | |
1969 | } | |
1970 | ||
1971 | cFYI(1,("Negotiate caps 0x%x",(int)cap)); | |
1972 | ||
1973 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
1974 | cFYI(1,("setting capabilities failed")); | |
ac67055e | 1975 | } |
1da177e4 LT |
1976 | } |
1977 | } | |
3e84469d SF |
1978 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
1979 | cifs_sb->wsize = min(cifs_sb->wsize, | |
1980 | (tcon->ses->server->maxBuf - | |
1981 | MAX_CIFS_HDR_SIZE)); | |
0ae0efad SF |
1982 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
1983 | cifs_sb->rsize = min(cifs_sb->rsize, | |
1984 | (tcon->ses->server->maxBuf - | |
1985 | MAX_CIFS_HDR_SIZE)); | |
1da177e4 LT |
1986 | } |
1987 | ||
1988 | /* volume_info.password is freed above when existing session found | |
1989 | (in which case it is not needed anymore) but when new sesion is created | |
1990 | the password ptr is put in the new session structure (in which case the | |
1991 | password will be freed at unmount time) */ | |
f99d49ad | 1992 | kfree(volume_info.UNC); |
1da177e4 LT |
1993 | FreeXid(xid); |
1994 | return rc; | |
1995 | } | |
1996 | ||
1997 | static int | |
1998 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 1999 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
2000 | const struct nls_table *nls_codepage) |
2001 | { | |
2002 | struct smb_hdr *smb_buffer; | |
2003 | struct smb_hdr *smb_buffer_response; | |
2004 | SESSION_SETUP_ANDX *pSMB; | |
2005 | SESSION_SETUP_ANDX *pSMBr; | |
2006 | char *bcc_ptr; | |
2007 | char *user; | |
2008 | char *domain; | |
2009 | int rc = 0; | |
2010 | int remaining_words = 0; | |
2011 | int bytes_returned = 0; | |
2012 | int len; | |
2013 | __u32 capabilities; | |
2014 | __u16 count; | |
2015 | ||
eeac8047 | 2016 | cFYI(1, ("In sesssetup")); |
1da177e4 LT |
2017 | if(ses == NULL) |
2018 | return -EINVAL; | |
2019 | user = ses->userName; | |
2020 | domain = ses->domainName; | |
2021 | smb_buffer = cifs_buf_get(); | |
2022 | if (smb_buffer == NULL) { | |
2023 | return -ENOMEM; | |
2024 | } | |
2025 | smb_buffer_response = smb_buffer; | |
2026 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2027 | ||
2028 | /* send SMBsessionSetup here */ | |
2029 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2030 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2031 | ||
1982c344 | 2032 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2033 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2034 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2035 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2036 | ||
2037 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2038 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2039 | ||
2040 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2041 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2042 | if (ses->capabilities & CAP_UNICODE) { | |
2043 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2044 | capabilities |= CAP_UNICODE; | |
2045 | } | |
2046 | if (ses->capabilities & CAP_STATUS32) { | |
2047 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2048 | capabilities |= CAP_STATUS32; | |
2049 | } | |
2050 | if (ses->capabilities & CAP_DFS) { | |
2051 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2052 | capabilities |= CAP_DFS; | |
2053 | } | |
2054 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2055 | ||
2056 | pSMB->req_no_secext.CaseInsensitivePasswordLength = | |
7c7b25bc | 2057 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2058 | |
2059 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2060 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2061 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2062 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2063 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2064 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2065 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2066 | |
2067 | if (ses->capabilities & CAP_UNICODE) { | |
2068 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2069 | *bcc_ptr = 0; | |
2070 | bcc_ptr++; | |
2071 | } | |
2072 | if(user == NULL) | |
3979877e | 2073 | bytes_returned = 0; /* skip null user */ |
1da177e4 LT |
2074 | else |
2075 | bytes_returned = | |
e89dc920 | 2076 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2077 | nls_codepage); |
2078 | /* convert number of 16 bit words to bytes */ | |
2079 | bcc_ptr += 2 * bytes_returned; | |
2080 | bcc_ptr += 2; /* trailing null */ | |
2081 | if (domain == NULL) | |
2082 | bytes_returned = | |
e89dc920 | 2083 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2084 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2085 | else | |
2086 | bytes_returned = | |
e89dc920 | 2087 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2088 | nls_codepage); |
2089 | bcc_ptr += 2 * bytes_returned; | |
2090 | bcc_ptr += 2; | |
2091 | bytes_returned = | |
e89dc920 | 2092 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2093 | 32, nls_codepage); |
2094 | bcc_ptr += 2 * bytes_returned; | |
2095 | bytes_returned = | |
e89dc920 | 2096 | cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release, |
1da177e4 LT |
2097 | 32, nls_codepage); |
2098 | bcc_ptr += 2 * bytes_returned; | |
2099 | bcc_ptr += 2; | |
2100 | bytes_returned = | |
e89dc920 | 2101 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2102 | 64, nls_codepage); |
2103 | bcc_ptr += 2 * bytes_returned; | |
2104 | bcc_ptr += 2; | |
2105 | } else { | |
2106 | if(user != NULL) { | |
2107 | strncpy(bcc_ptr, user, 200); | |
2108 | bcc_ptr += strnlen(user, 200); | |
2109 | } | |
2110 | *bcc_ptr = 0; | |
2111 | bcc_ptr++; | |
2112 | if (domain == NULL) { | |
2113 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2114 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2115 | } else { | |
2116 | strncpy(bcc_ptr, domain, 64); | |
2117 | bcc_ptr += strnlen(domain, 64); | |
2118 | *bcc_ptr = 0; | |
2119 | bcc_ptr++; | |
2120 | } | |
2121 | strcpy(bcc_ptr, "Linux version "); | |
2122 | bcc_ptr += strlen("Linux version "); | |
2123 | strcpy(bcc_ptr, system_utsname.release); | |
2124 | bcc_ptr += strlen(system_utsname.release) + 1; | |
2125 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
2126 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2127 | } | |
2128 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2129 | smb_buffer->smb_buf_length += count; | |
2130 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2131 | ||
2132 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2133 | &bytes_returned, 1); | |
2134 | if (rc) { | |
2135 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2136 | } else if ((smb_buffer_response->WordCount == 3) | |
2137 | || (smb_buffer_response->WordCount == 4)) { | |
2138 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2139 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2140 | if (action & GUEST_LOGIN) | |
2141 | cFYI(1, (" Guest login")); /* do we want to mark SesInfo struct ? */ | |
2142 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format (le) */ | |
2143 | cFYI(1, ("UID = %d ", ses->Suid)); | |
2144 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2145 | bcc_ptr = pByteArea(smb_buffer_response); | |
2146 | if ((pSMBr->resp.hdr.WordCount == 3) | |
2147 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2148 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2149 | if (pSMBr->resp.hdr.WordCount == 4) | |
2150 | bcc_ptr += blob_len; | |
2151 | ||
2152 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2153 | if ((long) (bcc_ptr) % 2) { | |
2154 | remaining_words = | |
2155 | (BCC(smb_buffer_response) - 1) /2; | |
2156 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2157 | } else { | |
2158 | remaining_words = | |
2159 | BCC(smb_buffer_response) / 2; | |
2160 | } | |
2161 | len = | |
2162 | UniStrnlen((wchar_t *) bcc_ptr, | |
2163 | remaining_words - 1); | |
2164 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2165 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2166 | terminating last Unicode string in response */ | |
a424f8bf SF |
2167 | if(ses->serverOS) |
2168 | kfree(ses->serverOS); | |
e915fc49 | 2169 | ses->serverOS = kzalloc(2 * (len + 1), GFP_KERNEL); |
433dc24f SF |
2170 | if(ses->serverOS == NULL) |
2171 | goto sesssetup_nomem; | |
1da177e4 | 2172 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2173 | (__le16 *)bcc_ptr, len,nls_codepage); |
1da177e4 LT |
2174 | bcc_ptr += 2 * (len + 1); |
2175 | remaining_words -= len + 1; | |
2176 | ses->serverOS[2 * len] = 0; | |
2177 | ses->serverOS[1 + (2 * len)] = 0; | |
2178 | if (remaining_words > 0) { | |
2179 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2180 | remaining_words-1); | |
cd49b492 | 2181 | kfree(ses->serverNOS); |
e915fc49 | 2182 | ses->serverNOS = kzalloc(2 * (len + 1),GFP_KERNEL); |
433dc24f SF |
2183 | if(ses->serverNOS == NULL) |
2184 | goto sesssetup_nomem; | |
1da177e4 | 2185 | cifs_strfromUCS_le(ses->serverNOS, |
e89dc920 | 2186 | (__le16 *)bcc_ptr,len,nls_codepage); |
1da177e4 LT |
2187 | bcc_ptr += 2 * (len + 1); |
2188 | ses->serverNOS[2 * len] = 0; | |
2189 | ses->serverNOS[1 + (2 * len)] = 0; | |
2190 | if(strncmp(ses->serverNOS, | |
2191 | "NT LAN Manager 4",16) == 0) { | |
2192 | cFYI(1,("NT4 server")); | |
2193 | ses->flags |= CIFS_SES_NT4; | |
2194 | } | |
2195 | remaining_words -= len + 1; | |
2196 | if (remaining_words > 0) { | |
433dc24f | 2197 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 2198 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ |
a424f8bf SF |
2199 | if(ses->serverDomain) |
2200 | kfree(ses->serverDomain); | |
1da177e4 | 2201 | ses->serverDomain = |
e915fc49 | 2202 | kzalloc(2*(len+1),GFP_KERNEL); |
433dc24f SF |
2203 | if(ses->serverDomain == NULL) |
2204 | goto sesssetup_nomem; | |
1da177e4 | 2205 | cifs_strfromUCS_le(ses->serverDomain, |
e89dc920 | 2206 | (__le16 *)bcc_ptr,len,nls_codepage); |
1da177e4 LT |
2207 | bcc_ptr += 2 * (len + 1); |
2208 | ses->serverDomain[2*len] = 0; | |
2209 | ses->serverDomain[1+(2*len)] = 0; | |
2210 | } /* else no more room so create dummy domain string */ | |
a424f8bf SF |
2211 | else { |
2212 | if(ses->serverDomain) | |
2213 | kfree(ses->serverDomain); | |
433dc24f | 2214 | ses->serverDomain = |
e915fc49 | 2215 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2216 | } |
1da177e4 | 2217 | } else { /* no room so create dummy domain and NOS string */ |
433dc24f SF |
2218 | /* if these kcallocs fail not much we |
2219 | can do, but better to not fail the | |
2220 | sesssetup itself */ | |
cd49b492 | 2221 | kfree(ses->serverDomain); |
1da177e4 | 2222 | ses->serverDomain = |
e915fc49 | 2223 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2224 | kfree(ses->serverNOS); |
1da177e4 | 2225 | ses->serverNOS = |
e915fc49 | 2226 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2227 | } |
2228 | } else { /* ASCII */ | |
2229 | len = strnlen(bcc_ptr, 1024); | |
2230 | if (((long) bcc_ptr + len) - (long) | |
2231 | pByteArea(smb_buffer_response) | |
2232 | <= BCC(smb_buffer_response)) { | |
cd49b492 | 2233 | kfree(ses->serverOS); |
e915fc49 | 2234 | ses->serverOS = kzalloc(len + 1,GFP_KERNEL); |
433dc24f SF |
2235 | if(ses->serverOS == NULL) |
2236 | goto sesssetup_nomem; | |
1da177e4 LT |
2237 | strncpy(ses->serverOS,bcc_ptr, len); |
2238 | ||
2239 | bcc_ptr += len; | |
2240 | bcc_ptr[0] = 0; /* null terminate the string */ | |
2241 | bcc_ptr++; | |
2242 | ||
2243 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2244 | kfree(ses->serverNOS); |
e915fc49 | 2245 | ses->serverNOS = kzalloc(len + 1,GFP_KERNEL); |
433dc24f SF |
2246 | if(ses->serverNOS == NULL) |
2247 | goto sesssetup_nomem; | |
1da177e4 LT |
2248 | strncpy(ses->serverNOS, bcc_ptr, len); |
2249 | bcc_ptr += len; | |
2250 | bcc_ptr[0] = 0; | |
2251 | bcc_ptr++; | |
2252 | ||
2253 | len = strnlen(bcc_ptr, 1024); | |
a424f8bf SF |
2254 | if(ses->serverDomain) |
2255 | kfree(ses->serverDomain); | |
e915fc49 | 2256 | ses->serverDomain = kzalloc(len + 1,GFP_KERNEL); |
433dc24f SF |
2257 | if(ses->serverDomain == NULL) |
2258 | goto sesssetup_nomem; | |
1da177e4 LT |
2259 | strncpy(ses->serverDomain, bcc_ptr, len); |
2260 | bcc_ptr += len; | |
2261 | bcc_ptr[0] = 0; | |
2262 | bcc_ptr++; | |
2263 | } else | |
2264 | cFYI(1, | |
2265 | ("Variable field of length %d extends beyond end of smb ", | |
2266 | len)); | |
2267 | } | |
2268 | } else { | |
2269 | cERROR(1, | |
2270 | (" Security Blob Length extends beyond end of SMB")); | |
2271 | } | |
2272 | } else { | |
2273 | cERROR(1, | |
2274 | (" Invalid Word count %d: ", | |
2275 | smb_buffer_response->WordCount)); | |
2276 | rc = -EIO; | |
2277 | } | |
433dc24f SF |
2278 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2279 | since that could make reconnection harder, and | |
2280 | reconnection might be needed to free memory */ | |
1da177e4 LT |
2281 | if (smb_buffer) |
2282 | cifs_buf_release(smb_buffer); | |
2283 | ||
2284 | return rc; | |
2285 | } | |
2286 | ||
1da177e4 LT |
2287 | static int |
2288 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
2289 | struct cifsSesInfo *ses, int * pNTLMv2_flag, | |
2290 | const struct nls_table *nls_codepage) | |
2291 | { | |
2292 | struct smb_hdr *smb_buffer; | |
2293 | struct smb_hdr *smb_buffer_response; | |
2294 | SESSION_SETUP_ANDX *pSMB; | |
2295 | SESSION_SETUP_ANDX *pSMBr; | |
2296 | char *bcc_ptr; | |
2297 | char *domain; | |
2298 | int rc = 0; | |
2299 | int remaining_words = 0; | |
2300 | int bytes_returned = 0; | |
2301 | int len; | |
2302 | int SecurityBlobLength = sizeof (NEGOTIATE_MESSAGE); | |
2303 | PNEGOTIATE_MESSAGE SecurityBlob; | |
2304 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2305 | __u32 negotiate_flags, capabilities; | |
2306 | __u16 count; | |
2307 | ||
12b3b8ff | 2308 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
1da177e4 LT |
2309 | if(ses == NULL) |
2310 | return -EINVAL; | |
2311 | domain = ses->domainName; | |
2312 | *pNTLMv2_flag = FALSE; | |
2313 | smb_buffer = cifs_buf_get(); | |
2314 | if (smb_buffer == NULL) { | |
2315 | return -ENOMEM; | |
2316 | } | |
2317 | smb_buffer_response = smb_buffer; | |
2318 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2319 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2320 | ||
2321 | /* send SMBsessionSetup here */ | |
2322 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2323 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2324 | |
2325 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2326 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2327 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2328 | ||
2329 | pSMB->req.AndXCommand = 0xFF; | |
2330 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2331 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2332 | ||
2333 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2334 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2335 | ||
2336 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2337 | CAP_EXTENDED_SECURITY; | |
2338 | if (ses->capabilities & CAP_UNICODE) { | |
2339 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2340 | capabilities |= CAP_UNICODE; | |
2341 | } | |
2342 | if (ses->capabilities & CAP_STATUS32) { | |
2343 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2344 | capabilities |= CAP_STATUS32; | |
2345 | } | |
2346 | if (ses->capabilities & CAP_DFS) { | |
2347 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2348 | capabilities |= CAP_DFS; | |
2349 | } | |
2350 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2351 | ||
2352 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2353 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2354 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2355 | SecurityBlob->MessageType = NtLmNegotiate; | |
2356 | negotiate_flags = | |
2357 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2358 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2359 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 LT |
2360 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
2361 | if(sign_CIFS_PDUs) | |
2362 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; | |
3979877e SF |
2363 | /* if(ntlmv2_support) |
2364 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ | |
1da177e4 LT |
2365 | /* setup pointers to domain name and workstation name */ |
2366 | bcc_ptr += SecurityBlobLength; | |
2367 | ||
2368 | SecurityBlob->WorkstationName.Buffer = 0; | |
2369 | SecurityBlob->WorkstationName.Length = 0; | |
2370 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2371 | ||
12b3b8ff SF |
2372 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2373 | along with username on auth request (ie the response to challenge) */ | |
2374 | SecurityBlob->DomainName.Buffer = 0; | |
2375 | SecurityBlob->DomainName.Length = 0; | |
2376 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2377 | if (ses->capabilities & CAP_UNICODE) { |
2378 | if ((long) bcc_ptr % 2) { | |
2379 | *bcc_ptr = 0; | |
2380 | bcc_ptr++; | |
2381 | } | |
2382 | ||
2383 | bytes_returned = | |
e89dc920 | 2384 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2385 | 32, nls_codepage); |
2386 | bcc_ptr += 2 * bytes_returned; | |
2387 | bytes_returned = | |
e89dc920 | 2388 | cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release, 32, |
1da177e4 LT |
2389 | nls_codepage); |
2390 | bcc_ptr += 2 * bytes_returned; | |
2391 | bcc_ptr += 2; /* null terminate Linux version */ | |
2392 | bytes_returned = | |
e89dc920 | 2393 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2394 | 64, nls_codepage); |
2395 | bcc_ptr += 2 * bytes_returned; | |
2396 | *(bcc_ptr + 1) = 0; | |
2397 | *(bcc_ptr + 2) = 0; | |
2398 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2399 | *(bcc_ptr + 1) = 0; | |
2400 | *(bcc_ptr + 2) = 0; | |
2401 | bcc_ptr += 2; /* null domain */ | |
2402 | } else { /* ASCII */ | |
2403 | strcpy(bcc_ptr, "Linux version "); | |
2404 | bcc_ptr += strlen("Linux version "); | |
2405 | strcpy(bcc_ptr, system_utsname.release); | |
2406 | bcc_ptr += strlen(system_utsname.release) + 1; | |
2407 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
2408 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2409 | bcc_ptr++; /* empty domain field */ | |
2410 | *bcc_ptr = 0; | |
2411 | } | |
2412 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2413 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2414 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2415 | smb_buffer->smb_buf_length += count; | |
2416 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2417 | ||
2418 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2419 | &bytes_returned, 1); | |
2420 | ||
2421 | if (smb_buffer_response->Status.CifsError == | |
2422 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2423 | rc = 0; | |
2424 | ||
2425 | if (rc) { | |
2426 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2427 | } else if ((smb_buffer_response->WordCount == 3) | |
2428 | || (smb_buffer_response->WordCount == 4)) { | |
2429 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2430 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2431 | ||
2432 | if (action & GUEST_LOGIN) | |
2433 | cFYI(1, (" Guest login")); | |
2434 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
2435 | ||
2436 | bcc_ptr = pByteArea(smb_buffer_response); | |
2437 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2438 | ||
2439 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2440 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2441 | cFYI(1, | |
2442 | ("Unexpected NTLMSSP message type received %d", | |
2443 | SecurityBlob2->MessageType)); | |
2444 | } else if (ses) { | |
2445 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ | |
12b3b8ff | 2446 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2447 | if ((pSMBr->resp.hdr.WordCount == 3) |
2448 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2449 | && (blob_len < | |
2450 | pSMBr->resp.ByteCount))) { | |
2451 | ||
2452 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2453 | bcc_ptr += blob_len; | |
12b3b8ff | 2454 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2455 | blob_len)); |
2456 | } | |
2457 | ||
12b3b8ff | 2458 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2459 | |
2460 | memcpy(ses->server->cryptKey, | |
2461 | SecurityBlob2->Challenge, | |
2462 | CIFS_CRYPTO_KEY_SIZE); | |
12b3b8ff SF |
2463 | if(SecurityBlob2->NegotiateFlags & |
2464 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) | |
1da177e4 LT |
2465 | *pNTLMv2_flag = TRUE; |
2466 | ||
2467 | if((SecurityBlob2->NegotiateFlags & | |
2468 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
2469 | || (sign_CIFS_PDUs > 1)) | |
2470 | ses->server->secMode |= | |
2471 | SECMODE_SIGN_REQUIRED; | |
2472 | if ((SecurityBlob2->NegotiateFlags & | |
2473 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) | |
2474 | ses->server->secMode |= | |
2475 | SECMODE_SIGN_ENABLED; | |
2476 | ||
2477 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2478 | if ((long) (bcc_ptr) % 2) { | |
2479 | remaining_words = | |
2480 | (BCC(smb_buffer_response) | |
2481 | - 1) / 2; | |
2482 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2483 | } else { | |
2484 | remaining_words = | |
2485 | BCC | |
2486 | (smb_buffer_response) / 2; | |
2487 | } | |
2488 | len = | |
2489 | UniStrnlen((wchar_t *) bcc_ptr, | |
2490 | remaining_words - 1); | |
2491 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2492 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2493 | terminating last Unicode string in response */ | |
a424f8bf SF |
2494 | if(ses->serverOS) |
2495 | kfree(ses->serverOS); | |
1da177e4 | 2496 | ses->serverOS = |
e915fc49 | 2497 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2498 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2499 | (__le16 *) |
1da177e4 LT |
2500 | bcc_ptr, len, |
2501 | nls_codepage); | |
2502 | bcc_ptr += 2 * (len + 1); | |
2503 | remaining_words -= len + 1; | |
2504 | ses->serverOS[2 * len] = 0; | |
2505 | ses->serverOS[1 + (2 * len)] = 0; | |
2506 | if (remaining_words > 0) { | |
2507 | len = UniStrnlen((wchar_t *) | |
2508 | bcc_ptr, | |
2509 | remaining_words | |
2510 | - 1); | |
cd49b492 | 2511 | kfree(ses->serverNOS); |
1da177e4 | 2512 | ses->serverNOS = |
e915fc49 | 2513 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2514 | GFP_KERNEL); |
2515 | cifs_strfromUCS_le(ses-> | |
2516 | serverNOS, | |
e89dc920 | 2517 | (__le16 *) |
1da177e4 LT |
2518 | bcc_ptr, |
2519 | len, | |
2520 | nls_codepage); | |
2521 | bcc_ptr += 2 * (len + 1); | |
2522 | ses->serverNOS[2 * len] = 0; | |
2523 | ses->serverNOS[1 + | |
2524 | (2 * len)] = 0; | |
2525 | remaining_words -= len + 1; | |
2526 | if (remaining_words > 0) { | |
2527 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
2528 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ | |
cd49b492 | 2529 | kfree(ses->serverDomain); |
1da177e4 | 2530 | ses->serverDomain = |
e915fc49 | 2531 | kzalloc(2 * |
1da177e4 LT |
2532 | (len + |
2533 | 1), | |
2534 | GFP_KERNEL); | |
2535 | cifs_strfromUCS_le | |
e89dc920 SF |
2536 | (ses->serverDomain, |
2537 | (__le16 *)bcc_ptr, | |
2538 | len, nls_codepage); | |
1da177e4 LT |
2539 | bcc_ptr += |
2540 | 2 * (len + 1); | |
e89dc920 | 2541 | ses->serverDomain[2*len] |
1da177e4 | 2542 | = 0; |
e89dc920 SF |
2543 | ses->serverDomain |
2544 | [1 + (2 * len)] | |
1da177e4 LT |
2545 | = 0; |
2546 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 2547 | else { |
cd49b492 | 2548 | kfree(ses->serverDomain); |
1da177e4 | 2549 | ses->serverDomain = |
e915fc49 | 2550 | kzalloc(2, |
1da177e4 | 2551 | GFP_KERNEL); |
a424f8bf | 2552 | } |
1da177e4 | 2553 | } else { /* no room so create dummy domain and NOS string */ |
cd49b492 | 2554 | kfree(ses->serverDomain); |
1da177e4 | 2555 | ses->serverDomain = |
e915fc49 | 2556 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2557 | kfree(ses->serverNOS); |
1da177e4 | 2558 | ses->serverNOS = |
e915fc49 | 2559 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2560 | } |
2561 | } else { /* ASCII */ | |
2562 | len = strnlen(bcc_ptr, 1024); | |
2563 | if (((long) bcc_ptr + len) - (long) | |
2564 | pByteArea(smb_buffer_response) | |
2565 | <= BCC(smb_buffer_response)) { | |
a424f8bf SF |
2566 | if(ses->serverOS) |
2567 | kfree(ses->serverOS); | |
1da177e4 | 2568 | ses->serverOS = |
e915fc49 | 2569 | kzalloc(len + 1, |
1da177e4 LT |
2570 | GFP_KERNEL); |
2571 | strncpy(ses->serverOS, | |
2572 | bcc_ptr, len); | |
2573 | ||
2574 | bcc_ptr += len; | |
2575 | bcc_ptr[0] = 0; /* null terminate string */ | |
2576 | bcc_ptr++; | |
2577 | ||
2578 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2579 | kfree(ses->serverNOS); |
1da177e4 | 2580 | ses->serverNOS = |
e915fc49 | 2581 | kzalloc(len + 1, |
1da177e4 LT |
2582 | GFP_KERNEL); |
2583 | strncpy(ses->serverNOS, bcc_ptr, len); | |
2584 | bcc_ptr += len; | |
2585 | bcc_ptr[0] = 0; | |
2586 | bcc_ptr++; | |
2587 | ||
2588 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2589 | kfree(ses->serverDomain); |
1da177e4 | 2590 | ses->serverDomain = |
e915fc49 | 2591 | kzalloc(len + 1, |
1da177e4 LT |
2592 | GFP_KERNEL); |
2593 | strncpy(ses->serverDomain, bcc_ptr, len); | |
2594 | bcc_ptr += len; | |
2595 | bcc_ptr[0] = 0; | |
2596 | bcc_ptr++; | |
2597 | } else | |
2598 | cFYI(1, | |
12b3b8ff | 2599 | ("Variable field of length %d extends beyond end of smb", |
1da177e4 LT |
2600 | len)); |
2601 | } | |
2602 | } else { | |
2603 | cERROR(1, | |
2604 | (" Security Blob Length extends beyond end of SMB")); | |
2605 | } | |
2606 | } else { | |
2607 | cERROR(1, ("No session structure passed in.")); | |
2608 | } | |
2609 | } else { | |
2610 | cERROR(1, | |
5815449d | 2611 | (" Invalid Word count %d:", |
1da177e4 LT |
2612 | smb_buffer_response->WordCount)); |
2613 | rc = -EIO; | |
2614 | } | |
2615 | ||
2616 | if (smb_buffer) | |
2617 | cifs_buf_release(smb_buffer); | |
2618 | ||
2619 | return rc; | |
2620 | } | |
2621 | static int | |
2622 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
2623 | char *ntlm_session_key, int ntlmv2_flag, | |
2624 | const struct nls_table *nls_codepage) | |
2625 | { | |
2626 | struct smb_hdr *smb_buffer; | |
2627 | struct smb_hdr *smb_buffer_response; | |
2628 | SESSION_SETUP_ANDX *pSMB; | |
2629 | SESSION_SETUP_ANDX *pSMBr; | |
2630 | char *bcc_ptr; | |
2631 | char *user; | |
2632 | char *domain; | |
2633 | int rc = 0; | |
2634 | int remaining_words = 0; | |
2635 | int bytes_returned = 0; | |
2636 | int len; | |
2637 | int SecurityBlobLength = sizeof (AUTHENTICATE_MESSAGE); | |
2638 | PAUTHENTICATE_MESSAGE SecurityBlob; | |
2639 | __u32 negotiate_flags, capabilities; | |
2640 | __u16 count; | |
2641 | ||
2642 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
2643 | if(ses == NULL) | |
2644 | return -EINVAL; | |
2645 | user = ses->userName; | |
2646 | domain = ses->domainName; | |
2647 | smb_buffer = cifs_buf_get(); | |
2648 | if (smb_buffer == NULL) { | |
2649 | return -ENOMEM; | |
2650 | } | |
2651 | smb_buffer_response = smb_buffer; | |
2652 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2653 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2654 | ||
2655 | /* send SMBsessionSetup here */ | |
2656 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2657 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2658 | |
2659 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2660 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
2661 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2662 | pSMB->req.AndXCommand = 0xFF; | |
2663 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2664 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2665 | ||
2666 | pSMB->req.hdr.Uid = ses->Suid; | |
2667 | ||
2668 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2669 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2670 | ||
2671 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2672 | CAP_EXTENDED_SECURITY; | |
2673 | if (ses->capabilities & CAP_UNICODE) { | |
2674 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2675 | capabilities |= CAP_UNICODE; | |
2676 | } | |
2677 | if (ses->capabilities & CAP_STATUS32) { | |
2678 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2679 | capabilities |= CAP_STATUS32; | |
2680 | } | |
2681 | if (ses->capabilities & CAP_DFS) { | |
2682 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2683 | capabilities |= CAP_DFS; | |
2684 | } | |
2685 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2686 | ||
2687 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2688 | SecurityBlob = (PAUTHENTICATE_MESSAGE) bcc_ptr; | |
2689 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2690 | SecurityBlob->MessageType = NtLmAuthenticate; | |
2691 | bcc_ptr += SecurityBlobLength; | |
2692 | negotiate_flags = | |
2693 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | | |
2694 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
2695 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
2696 | if(sign_CIFS_PDUs) | |
2697 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; | |
2698 | if(ntlmv2_flag) | |
2699 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; | |
2700 | ||
2701 | /* setup pointers to domain name and workstation name */ | |
2702 | ||
2703 | SecurityBlob->WorkstationName.Buffer = 0; | |
2704 | SecurityBlob->WorkstationName.Length = 0; | |
2705 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2706 | SecurityBlob->SessionKey.Length = 0; | |
2707 | SecurityBlob->SessionKey.MaximumLength = 0; | |
2708 | SecurityBlob->SessionKey.Buffer = 0; | |
2709 | ||
2710 | SecurityBlob->LmChallengeResponse.Length = 0; | |
2711 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
2712 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
2713 | ||
2714 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 2715 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2716 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
2717 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
2718 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
2719 | SecurityBlob->NtChallengeResponse.Buffer = |
2720 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
2721 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
2722 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2723 | |
2724 | if (ses->capabilities & CAP_UNICODE) { | |
2725 | if (domain == NULL) { | |
2726 | SecurityBlob->DomainName.Buffer = 0; | |
2727 | SecurityBlob->DomainName.Length = 0; | |
2728 | SecurityBlob->DomainName.MaximumLength = 0; | |
2729 | } else { | |
2730 | __u16 len = | |
e89dc920 | 2731 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2732 | nls_codepage); |
2733 | len *= 2; | |
2734 | SecurityBlob->DomainName.MaximumLength = | |
2735 | cpu_to_le16(len); | |
2736 | SecurityBlob->DomainName.Buffer = | |
2737 | cpu_to_le32(SecurityBlobLength); | |
2738 | bcc_ptr += len; | |
2739 | SecurityBlobLength += len; | |
2740 | SecurityBlob->DomainName.Length = | |
2741 | cpu_to_le16(len); | |
2742 | } | |
2743 | if (user == NULL) { | |
2744 | SecurityBlob->UserName.Buffer = 0; | |
2745 | SecurityBlob->UserName.Length = 0; | |
2746 | SecurityBlob->UserName.MaximumLength = 0; | |
2747 | } else { | |
2748 | __u16 len = | |
e89dc920 | 2749 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 LT |
2750 | nls_codepage); |
2751 | len *= 2; | |
2752 | SecurityBlob->UserName.MaximumLength = | |
2753 | cpu_to_le16(len); | |
2754 | SecurityBlob->UserName.Buffer = | |
2755 | cpu_to_le32(SecurityBlobLength); | |
2756 | bcc_ptr += len; | |
2757 | SecurityBlobLength += len; | |
2758 | SecurityBlob->UserName.Length = | |
2759 | cpu_to_le16(len); | |
2760 | } | |
2761 | ||
e89dc920 | 2762 | /* SecurityBlob->WorkstationName.Length = cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); |
1da177e4 LT |
2763 | SecurityBlob->WorkstationName.Length *= 2; |
2764 | SecurityBlob->WorkstationName.MaximumLength = cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
2765 | SecurityBlob->WorkstationName.Buffer = cpu_to_le32(SecurityBlobLength); | |
2766 | bcc_ptr += SecurityBlob->WorkstationName.Length; | |
2767 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
2768 | SecurityBlob->WorkstationName.Length = cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
2769 | ||
2770 | if ((long) bcc_ptr % 2) { | |
2771 | *bcc_ptr = 0; | |
2772 | bcc_ptr++; | |
2773 | } | |
2774 | bytes_returned = | |
e89dc920 | 2775 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2776 | 32, nls_codepage); |
2777 | bcc_ptr += 2 * bytes_returned; | |
2778 | bytes_returned = | |
e89dc920 | 2779 | cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release, 32, |
1da177e4 LT |
2780 | nls_codepage); |
2781 | bcc_ptr += 2 * bytes_returned; | |
2782 | bcc_ptr += 2; /* null term version string */ | |
2783 | bytes_returned = | |
e89dc920 | 2784 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2785 | 64, nls_codepage); |
2786 | bcc_ptr += 2 * bytes_returned; | |
2787 | *(bcc_ptr + 1) = 0; | |
2788 | *(bcc_ptr + 2) = 0; | |
2789 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2790 | *(bcc_ptr + 1) = 0; | |
2791 | *(bcc_ptr + 2) = 0; | |
2792 | bcc_ptr += 2; /* null domain */ | |
2793 | } else { /* ASCII */ | |
2794 | if (domain == NULL) { | |
2795 | SecurityBlob->DomainName.Buffer = 0; | |
2796 | SecurityBlob->DomainName.Length = 0; | |
2797 | SecurityBlob->DomainName.MaximumLength = 0; | |
2798 | } else { | |
2799 | __u16 len; | |
2800 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; | |
2801 | strncpy(bcc_ptr, domain, 63); | |
2802 | len = strnlen(domain, 64); | |
2803 | SecurityBlob->DomainName.MaximumLength = | |
2804 | cpu_to_le16(len); | |
2805 | SecurityBlob->DomainName.Buffer = | |
2806 | cpu_to_le32(SecurityBlobLength); | |
2807 | bcc_ptr += len; | |
2808 | SecurityBlobLength += len; | |
2809 | SecurityBlob->DomainName.Length = cpu_to_le16(len); | |
2810 | } | |
2811 | if (user == NULL) { | |
2812 | SecurityBlob->UserName.Buffer = 0; | |
2813 | SecurityBlob->UserName.Length = 0; | |
2814 | SecurityBlob->UserName.MaximumLength = 0; | |
2815 | } else { | |
2816 | __u16 len; | |
2817 | strncpy(bcc_ptr, user, 63); | |
2818 | len = strnlen(user, 64); | |
2819 | SecurityBlob->UserName.MaximumLength = | |
2820 | cpu_to_le16(len); | |
2821 | SecurityBlob->UserName.Buffer = | |
2822 | cpu_to_le32(SecurityBlobLength); | |
2823 | bcc_ptr += len; | |
2824 | SecurityBlobLength += len; | |
2825 | SecurityBlob->UserName.Length = cpu_to_le16(len); | |
2826 | } | |
2827 | /* BB fill in our workstation name if known BB */ | |
2828 | ||
2829 | strcpy(bcc_ptr, "Linux version "); | |
2830 | bcc_ptr += strlen("Linux version "); | |
2831 | strcpy(bcc_ptr, system_utsname.release); | |
2832 | bcc_ptr += strlen(system_utsname.release) + 1; | |
2833 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
2834 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2835 | bcc_ptr++; /* null domain */ | |
2836 | *bcc_ptr = 0; | |
2837 | } | |
2838 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2839 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2840 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2841 | smb_buffer->smb_buf_length += count; | |
2842 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2843 | ||
2844 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2845 | &bytes_returned, 1); | |
2846 | if (rc) { | |
2847 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2848 | } else if ((smb_buffer_response->WordCount == 3) | |
2849 | || (smb_buffer_response->WordCount == 4)) { | |
2850 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2851 | __u16 blob_len = | |
2852 | le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2853 | if (action & GUEST_LOGIN) | |
2854 | cFYI(1, (" Guest login")); /* BB do we want to set anything in SesInfo struct ? */ | |
2855 | /* if(SecurityBlob2->MessageType != NtLm??){ | |
2856 | cFYI("Unexpected message type on auth response is %d ")); | |
2857 | } */ | |
2858 | if (ses) { | |
2859 | cFYI(1, | |
2860 | ("Does UID on challenge %d match auth response UID %d ", | |
2861 | ses->Suid, smb_buffer_response->Uid)); | |
2862 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format */ | |
2863 | bcc_ptr = pByteArea(smb_buffer_response); | |
2864 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2865 | if ((pSMBr->resp.hdr.WordCount == 3) | |
2866 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2867 | && (blob_len < | |
2868 | pSMBr->resp.ByteCount))) { | |
2869 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2870 | bcc_ptr += | |
2871 | blob_len; | |
2872 | cFYI(1, | |
2873 | ("Security Blob Length %d ", | |
2874 | blob_len)); | |
2875 | } | |
2876 | ||
2877 | cFYI(1, | |
2878 | ("NTLMSSP response to Authenticate ")); | |
2879 | ||
2880 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2881 | if ((long) (bcc_ptr) % 2) { | |
2882 | remaining_words = | |
2883 | (BCC(smb_buffer_response) | |
2884 | - 1) / 2; | |
2885 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2886 | } else { | |
2887 | remaining_words = BCC(smb_buffer_response) / 2; | |
2888 | } | |
2889 | len = | |
2890 | UniStrnlen((wchar_t *) bcc_ptr,remaining_words - 1); | |
2891 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2892 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2893 | terminating last Unicode string in response */ | |
a424f8bf | 2894 | if(ses->serverOS) |
08775834 | 2895 | kfree(ses->serverOS); |
1da177e4 | 2896 | ses->serverOS = |
e915fc49 | 2897 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2898 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2899 | (__le16 *) |
1da177e4 LT |
2900 | bcc_ptr, len, |
2901 | nls_codepage); | |
2902 | bcc_ptr += 2 * (len + 1); | |
2903 | remaining_words -= len + 1; | |
2904 | ses->serverOS[2 * len] = 0; | |
2905 | ses->serverOS[1 + (2 * len)] = 0; | |
2906 | if (remaining_words > 0) { | |
2907 | len = UniStrnlen((wchar_t *) | |
2908 | bcc_ptr, | |
2909 | remaining_words | |
2910 | - 1); | |
cd49b492 | 2911 | kfree(ses->serverNOS); |
1da177e4 | 2912 | ses->serverNOS = |
e915fc49 | 2913 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2914 | GFP_KERNEL); |
2915 | cifs_strfromUCS_le(ses-> | |
2916 | serverNOS, | |
e89dc920 | 2917 | (__le16 *) |
1da177e4 LT |
2918 | bcc_ptr, |
2919 | len, | |
2920 | nls_codepage); | |
2921 | bcc_ptr += 2 * (len + 1); | |
2922 | ses->serverNOS[2 * len] = 0; | |
2923 | ses->serverNOS[1+(2*len)] = 0; | |
2924 | remaining_words -= len + 1; | |
2925 | if (remaining_words > 0) { | |
2926 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
2927 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ | |
a424f8bf SF |
2928 | if(ses->serverDomain) |
2929 | kfree(ses->serverDomain); | |
1da177e4 | 2930 | ses->serverDomain = |
e915fc49 | 2931 | kzalloc(2 * |
1da177e4 LT |
2932 | (len + |
2933 | 1), | |
2934 | GFP_KERNEL); | |
2935 | cifs_strfromUCS_le | |
2936 | (ses-> | |
2937 | serverDomain, | |
e89dc920 | 2938 | (__le16 *) |
1da177e4 LT |
2939 | bcc_ptr, len, |
2940 | nls_codepage); | |
2941 | bcc_ptr += | |
2942 | 2 * (len + 1); | |
2943 | ses-> | |
2944 | serverDomain[2 | |
2945 | * len] | |
2946 | = 0; | |
2947 | ses-> | |
2948 | serverDomain[1 | |
2949 | + | |
2950 | (2 | |
2951 | * | |
2952 | len)] | |
2953 | = 0; | |
2954 | } /* else no more room so create dummy domain string */ | |
a424f8bf SF |
2955 | else { |
2956 | if(ses->serverDomain) | |
2957 | kfree(ses->serverDomain); | |
e915fc49 | 2958 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 2959 | } |
1da177e4 | 2960 | } else { /* no room so create dummy domain and NOS string */ |
a424f8bf SF |
2961 | if(ses->serverDomain) |
2962 | kfree(ses->serverDomain); | |
e915fc49 | 2963 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 2964 | kfree(ses->serverNOS); |
e915fc49 | 2965 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2966 | } |
2967 | } else { /* ASCII */ | |
2968 | len = strnlen(bcc_ptr, 1024); | |
2969 | if (((long) bcc_ptr + len) - | |
2970 | (long) pByteArea(smb_buffer_response) | |
2971 | <= BCC(smb_buffer_response)) { | |
a424f8bf SF |
2972 | if(ses->serverOS) |
2973 | kfree(ses->serverOS); | |
e915fc49 | 2974 | ses->serverOS = kzalloc(len + 1,GFP_KERNEL); |
1da177e4 LT |
2975 | strncpy(ses->serverOS,bcc_ptr, len); |
2976 | ||
2977 | bcc_ptr += len; | |
2978 | bcc_ptr[0] = 0; /* null terminate the string */ | |
2979 | bcc_ptr++; | |
2980 | ||
2981 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2982 | kfree(ses->serverNOS); |
e915fc49 | 2983 | ses->serverNOS = kzalloc(len+1,GFP_KERNEL); |
1da177e4 LT |
2984 | strncpy(ses->serverNOS, bcc_ptr, len); |
2985 | bcc_ptr += len; | |
2986 | bcc_ptr[0] = 0; | |
2987 | bcc_ptr++; | |
2988 | ||
2989 | len = strnlen(bcc_ptr, 1024); | |
a424f8bf SF |
2990 | if(ses->serverDomain) |
2991 | kfree(ses->serverDomain); | |
e915fc49 | 2992 | ses->serverDomain = kzalloc(len+1,GFP_KERNEL); |
1da177e4 LT |
2993 | strncpy(ses->serverDomain, bcc_ptr, len); |
2994 | bcc_ptr += len; | |
2995 | bcc_ptr[0] = 0; | |
2996 | bcc_ptr++; | |
2997 | } else | |
2998 | cFYI(1, | |
2999 | ("Variable field of length %d extends beyond end of smb ", | |
3000 | len)); | |
3001 | } | |
3002 | } else { | |
3003 | cERROR(1, | |
3004 | (" Security Blob Length extends beyond end of SMB")); | |
3005 | } | |
3006 | } else { | |
3007 | cERROR(1, ("No session structure passed in.")); | |
3008 | } | |
3009 | } else { | |
3010 | cERROR(1, | |
3011 | (" Invalid Word count %d: ", | |
3012 | smb_buffer_response->WordCount)); | |
3013 | rc = -EIO; | |
3014 | } | |
3015 | ||
3016 | if (smb_buffer) | |
3017 | cifs_buf_release(smb_buffer); | |
3018 | ||
3019 | return rc; | |
3020 | } | |
3021 | ||
3022 | int | |
3023 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3024 | const char *tree, struct cifsTconInfo *tcon, | |
3025 | const struct nls_table *nls_codepage) | |
3026 | { | |
3027 | struct smb_hdr *smb_buffer; | |
3028 | struct smb_hdr *smb_buffer_response; | |
3029 | TCONX_REQ *pSMB; | |
3030 | TCONX_RSP *pSMBr; | |
3031 | unsigned char *bcc_ptr; | |
3032 | int rc = 0; | |
3033 | int length; | |
3034 | __u16 count; | |
3035 | ||
3036 | if (ses == NULL) | |
3037 | return -EIO; | |
3038 | ||
3039 | smb_buffer = cifs_buf_get(); | |
3040 | if (smb_buffer == NULL) { | |
3041 | return -ENOMEM; | |
3042 | } | |
3043 | smb_buffer_response = smb_buffer; | |
3044 | ||
3045 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3046 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3047 | |
3048 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3049 | smb_buffer->Uid = ses->Suid; |
3050 | pSMB = (TCONX_REQ *) smb_buffer; | |
3051 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3052 | ||
3053 | pSMB->AndXCommand = 0xFF; | |
3054 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3055 | bcc_ptr = &pSMB->Password[0]; |
eeac8047 SF |
3056 | if((ses->server->secMode) & SECMODE_USER) { |
3057 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ | |
7c7b25bc | 3058 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3059 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3060 | /* already aligned so no need to do it below */ |
eeac8047 | 3061 | } else { |
7c7b25bc | 3062 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3063 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3064 | specified as required (when that support is added to | |
3065 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3066 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3067 | by Samba (not sure whether other servers allow |
3068 | NTLMv2 password here) */ | |
7c7b25bc SF |
3069 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
3070 | if((extended_security & CIFSSEC_MAY_LANMAN) && | |
3071 | (ses->server->secType == LANMAN)) | |
3072 | calc_lanman_hash(ses, bcc_ptr); | |
3073 | else | |
3074 | #endif /* CIFS_WEAK_PW_HASH */ | |
eeac8047 SF |
3075 | SMBNTencrypt(ses->password, |
3076 | ses->server->cryptKey, | |
3077 | bcc_ptr); | |
3078 | ||
7c7b25bc SF |
3079 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
3080 | if(ses->capabilities & CAP_UNICODE) { | |
3081 | /* must align unicode strings */ | |
3082 | *bcc_ptr = 0; /* null byte password */ | |
3083 | bcc_ptr++; | |
3084 | } | |
eeac8047 | 3085 | } |
1da177e4 | 3086 | |
a878fb22 SF |
3087 | if(ses->server->secMode & |
3088 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
3089 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3090 | ||
3091 | if (ses->capabilities & CAP_STATUS32) { | |
3092 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3093 | } | |
3094 | if (ses->capabilities & CAP_DFS) { | |
3095 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3096 | } | |
3097 | if (ses->capabilities & CAP_UNICODE) { | |
3098 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3099 | length = | |
a878fb22 SF |
3100 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3101 | 6 /* max utf8 char length in bytes */ * | |
3102 | (/* server len*/ + 256 /* share len */), nls_codepage); | |
3103 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3104 | bcc_ptr += 2; /* skip trailing null */ |
3105 | } else { /* ASCII */ | |
1da177e4 LT |
3106 | strcpy(bcc_ptr, tree); |
3107 | bcc_ptr += strlen(tree) + 1; | |
3108 | } | |
3109 | strcpy(bcc_ptr, "?????"); | |
3110 | bcc_ptr += strlen("?????"); | |
3111 | bcc_ptr += 1; | |
3112 | count = bcc_ptr - &pSMB->Password[0]; | |
3113 | pSMB->hdr.smb_buf_length += count; | |
3114 | pSMB->ByteCount = cpu_to_le16(count); | |
3115 | ||
3116 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, 0); | |
3117 | ||
3118 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3119 | /* above now done in SendReceive */ | |
3120 | if ((rc == 0) && (tcon != NULL)) { | |
3121 | tcon->tidStatus = CifsGood; | |
3122 | tcon->tid = smb_buffer_response->Tid; | |
3123 | bcc_ptr = pByteArea(smb_buffer_response); | |
3124 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
3125 | /* skip service field (NB: this field is always ASCII) */ | |
3126 | bcc_ptr += length + 1; | |
3127 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); | |
3128 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3129 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3130 | if ((bcc_ptr + (2 * length)) - | |
3131 | pByteArea(smb_buffer_response) <= | |
3132 | BCC(smb_buffer_response)) { | |
f99d49ad | 3133 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3134 | tcon->nativeFileSystem = |
e915fc49 | 3135 | kzalloc(length + 2, GFP_KERNEL); |
1da177e4 | 3136 | cifs_strfromUCS_le(tcon->nativeFileSystem, |
e89dc920 | 3137 | (__le16 *) bcc_ptr, |
1da177e4 LT |
3138 | length, nls_codepage); |
3139 | bcc_ptr += 2 * length; | |
3140 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3141 | bcc_ptr[1] = 0; | |
3142 | bcc_ptr += 2; | |
3143 | } | |
3144 | /* else do not bother copying these informational fields */ | |
3145 | } else { | |
3146 | length = strnlen(bcc_ptr, 1024); | |
3147 | if ((bcc_ptr + length) - | |
3148 | pByteArea(smb_buffer_response) <= | |
3149 | BCC(smb_buffer_response)) { | |
f99d49ad | 3150 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3151 | tcon->nativeFileSystem = |
e915fc49 | 3152 | kzalloc(length + 1, GFP_KERNEL); |
1da177e4 LT |
3153 | strncpy(tcon->nativeFileSystem, bcc_ptr, |
3154 | length); | |
3155 | } | |
3156 | /* else do not bother copying these informational fields */ | |
3157 | } | |
3979877e SF |
3158 | if(smb_buffer_response->WordCount == 3) |
3159 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); | |
3160 | else | |
3161 | tcon->Flags = 0; | |
1da177e4 LT |
3162 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3163 | } else if ((rc == 0) && tcon == NULL) { | |
3164 | /* all we need to save for IPC$ connection */ | |
3165 | ses->ipc_tid = smb_buffer_response->Tid; | |
3166 | } | |
3167 | ||
3168 | if (smb_buffer) | |
3169 | cifs_buf_release(smb_buffer); | |
3170 | return rc; | |
3171 | } | |
3172 | ||
3173 | int | |
3174 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3175 | { | |
3176 | int rc = 0; | |
3177 | int xid; | |
3178 | struct cifsSesInfo *ses = NULL; | |
3179 | struct task_struct *cifsd_task; | |
3180 | ||
3181 | xid = GetXid(); | |
3182 | ||
3183 | if (cifs_sb->tcon) { | |
3184 | ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ | |
3185 | rc = CIFSSMBTDis(xid, cifs_sb->tcon); | |
3186 | if (rc == -EBUSY) { | |
3187 | FreeXid(xid); | |
3188 | return 0; | |
3189 | } | |
3190 | tconInfoFree(cifs_sb->tcon); | |
3191 | if ((ses) && (ses->server)) { | |
3192 | /* save off task so we do not refer to ses later */ | |
3193 | cifsd_task = ses->server->tsk; | |
3194 | cFYI(1, ("About to do SMBLogoff ")); | |
3195 | rc = CIFSSMBLogoff(xid, ses); | |
3196 | if (rc == -EBUSY) { | |
3197 | FreeXid(xid); | |
3198 | return 0; | |
3199 | } else if (rc == -ESHUTDOWN) { | |
3200 | cFYI(1,("Waking up socket by sending it signal")); | |
f191401f | 3201 | if(cifsd_task) { |
1da177e4 | 3202 | send_sig(SIGKILL,cifsd_task,1); |
f191401f SF |
3203 | wait_for_completion(&cifsd_complete); |
3204 | } | |
1da177e4 LT |
3205 | rc = 0; |
3206 | } /* else - we have an smb session | |
3207 | left on this socket do not kill cifsd */ | |
3208 | } else | |
3209 | cFYI(1, ("No session or bad tcon")); | |
3210 | } | |
3211 | ||
3212 | cifs_sb->tcon = NULL; | |
041e0e3b NA |
3213 | if (ses) |
3214 | schedule_timeout_interruptible(msecs_to_jiffies(500)); | |
1da177e4 LT |
3215 | if (ses) |
3216 | sesInfoFree(ses); | |
3217 | ||
3218 | FreeXid(xid); | |
3219 | return rc; /* BB check if we should always return zero here */ | |
3220 | } | |
3221 | ||
3222 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
3223 | struct nls_table * nls_info) | |
3224 | { | |
3225 | int rc = 0; | |
7c7b25bc | 3226 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
1da177e4 | 3227 | int ntlmv2_flag = FALSE; |
ad009ac9 | 3228 | int first_time = 0; |
1da177e4 LT |
3229 | |
3230 | /* what if server changes its buffer size after dropping the session? */ | |
3231 | if(pSesInfo->server->maxBuf == 0) /* no need to send on reconnect */ { | |
3232 | rc = CIFSSMBNegotiate(xid, pSesInfo); | |
3233 | if(rc == -EAGAIN) /* retry only once on 1st time connection */ { | |
3234 | rc = CIFSSMBNegotiate(xid, pSesInfo); | |
3235 | if(rc == -EAGAIN) | |
3236 | rc = -EHOSTDOWN; | |
3237 | } | |
3238 | if(rc == 0) { | |
3239 | spin_lock(&GlobalMid_Lock); | |
3240 | if(pSesInfo->server->tcpStatus != CifsExiting) | |
3241 | pSesInfo->server->tcpStatus = CifsGood; | |
3242 | else | |
3243 | rc = -EHOSTDOWN; | |
3244 | spin_unlock(&GlobalMid_Lock); | |
3245 | ||
3246 | } | |
ad009ac9 | 3247 | first_time = 1; |
1da177e4 LT |
3248 | } |
3249 | if (!rc) { | |
3250 | pSesInfo->capabilities = pSesInfo->server->capabilities; | |
3251 | if(linuxExtEnabled == 0) | |
3252 | pSesInfo->capabilities &= (~CAP_UNIX); | |
ad009ac9 | 3253 | /* pSesInfo->sequence_number = 0;*/ |
1da177e4 LT |
3254 | cFYI(1,("Security Mode: 0x%x Capabilities: 0x%x Time Zone: %d", |
3255 | pSesInfo->server->secMode, | |
3256 | pSesInfo->server->capabilities, | |
3257 | pSesInfo->server->timeZone)); | |
189acaae | 3258 | if(experimEnabled < 2) |
3979877e SF |
3259 | rc = CIFS_SessSetup(xid, pSesInfo, |
3260 | first_time, nls_info); | |
189acaae | 3261 | else if (extended_security |
1da177e4 LT |
3262 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) |
3263 | && (pSesInfo->server->secType == NTLMSSP)) { | |
189acaae | 3264 | rc = -EOPNOTSUPP; |
1da177e4 LT |
3265 | } else if (extended_security |
3266 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
3267 | && (pSesInfo->server->secType == RawNTLMSSP)) { | |
5815449d | 3268 | cFYI(1, ("NTLMSSP sesssetup")); |
1da177e4 LT |
3269 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, |
3270 | pSesInfo, | |
3271 | &ntlmv2_flag, | |
3272 | nls_info); | |
3273 | if (!rc) { | |
3274 | if(ntlmv2_flag) { | |
3275 | char * v2_response; | |
3276 | cFYI(1,("Can use more secure NTLM version 2 password hash")); | |
3277 | if(CalcNTLMv2_partial_mac_key(pSesInfo, | |
3278 | nls_info)) { | |
3279 | rc = -ENOMEM; | |
3280 | goto ss_err_exit; | |
3281 | } else | |
3282 | v2_response = kmalloc(16 + 64 /* blob */, GFP_KERNEL); | |
3283 | if(v2_response) { | |
3284 | CalcNTLMv2_response(pSesInfo,v2_response); | |
ad009ac9 SF |
3285 | /* if(first_time) |
3286 | cifs_calculate_ntlmv2_mac_key( | |
3287 | pSesInfo->server->mac_signing_key, | |
3288 | response, ntlm_session_key, */ | |
1da177e4 LT |
3289 | kfree(v2_response); |
3290 | /* BB Put dummy sig in SessSetup PDU? */ | |
3291 | } else { | |
3292 | rc = -ENOMEM; | |
3293 | goto ss_err_exit; | |
3294 | } | |
3295 | ||
3296 | } else { | |
3297 | SMBNTencrypt(pSesInfo->password, | |
3298 | pSesInfo->server->cryptKey, | |
3299 | ntlm_session_key); | |
3300 | ||
ad009ac9 SF |
3301 | if(first_time) |
3302 | cifs_calculate_mac_key( | |
3303 | pSesInfo->server->mac_signing_key, | |
3304 | ntlm_session_key, | |
3305 | pSesInfo->password); | |
1da177e4 LT |
3306 | } |
3307 | /* for better security the weaker lanman hash not sent | |
3308 | in AuthSessSetup so we no longer calculate it */ | |
3309 | ||
3310 | rc = CIFSNTLMSSPAuthSessSetup(xid, | |
3311 | pSesInfo, | |
3312 | ntlm_session_key, | |
3313 | ntlmv2_flag, | |
3314 | nls_info); | |
3315 | } | |
3316 | } else { /* old style NTLM 0.12 session setup */ | |
3317 | SMBNTencrypt(pSesInfo->password, | |
3318 | pSesInfo->server->cryptKey, | |
3319 | ntlm_session_key); | |
3320 | ||
ad009ac9 SF |
3321 | if(first_time) |
3322 | cifs_calculate_mac_key( | |
3323 | pSesInfo->server->mac_signing_key, | |
3324 | ntlm_session_key, pSesInfo->password); | |
3325 | ||
1da177e4 LT |
3326 | rc = CIFSSessSetup(xid, pSesInfo, |
3327 | ntlm_session_key, nls_info); | |
3328 | } | |
3329 | if (rc) { | |
3330 | cERROR(1,("Send error in SessSetup = %d",rc)); | |
3331 | } else { | |
3332 | cFYI(1,("CIFS Session Established successfully")); | |
3333 | pSesInfo->status = CifsGood; | |
3334 | } | |
3335 | } | |
3336 | ss_err_exit: | |
3337 | return rc; | |
3338 | } | |
3339 |