Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/connect.c | |
3 | * | |
75865f8c | 4 | * Copyright (C) International Business Machines Corp., 2002,2007 |
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> |
aaf737ad | 33 | #include <linux/kthread.h> |
0ae0efad | 34 | #include <linux/pagevec.h> |
7dfb7103 | 35 | #include <linux/freezer.h> |
1da177e4 LT |
36 | #include <asm/uaccess.h> |
37 | #include <asm/processor.h> | |
38 | #include "cifspdu.h" | |
39 | #include "cifsglob.h" | |
40 | #include "cifsproto.h" | |
41 | #include "cifs_unicode.h" | |
42 | #include "cifs_debug.h" | |
43 | #include "cifs_fs_sb.h" | |
44 | #include "ntlmssp.h" | |
45 | #include "nterr.h" | |
46 | #include "rfc1002pdu.h" | |
a2653eba | 47 | #include "cn_cifs.h" |
1da177e4 LT |
48 | |
49 | #define CIFS_PORT 445 | |
50 | #define RFC1001_PORT 139 | |
51 | ||
f191401f SF |
52 | static DECLARE_COMPLETION(cifsd_complete); |
53 | ||
1da177e4 LT |
54 | extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, |
55 | unsigned char *p24); | |
56 | ||
57 | extern mempool_t *cifs_req_poolp; | |
58 | ||
59 | struct smb_vol { | |
60 | char *username; | |
61 | char *password; | |
62 | char *domainname; | |
63 | char *UNC; | |
64 | char *UNCip; | |
65 | char *in6_addr; /* ipv6 address as human readable form of in6_addr */ | |
66 | char *iocharset; /* local code page for mapping to and from Unicode */ | |
67 | char source_rfc1001_name[16]; /* netbios name of client */ | |
a10faeb2 | 68 | char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */ |
1da177e4 LT |
69 | uid_t linux_uid; |
70 | gid_t linux_gid; | |
71 | mode_t file_mode; | |
72 | mode_t dir_mode; | |
189acaae | 73 | unsigned secFlg; |
1da177e4 LT |
74 | unsigned rw:1; |
75 | unsigned retry:1; | |
76 | unsigned intr:1; | |
77 | unsigned setuids:1; | |
4523cc30 SF |
78 | unsigned override_uid:1; |
79 | unsigned override_gid:1; | |
1da177e4 LT |
80 | unsigned noperm:1; |
81 | unsigned no_psx_acl:1; /* set if posix acl support should be disabled */ | |
0a4b92c0 | 82 | unsigned cifs_acl:1; |
1da177e4 LT |
83 | unsigned no_xattr:1; /* set if xattr (EA) support should be disabled*/ |
84 | unsigned server_ino:1; /* use inode numbers from server ie UniqueId */ | |
85 | unsigned direct_io:1; | |
6a0b4824 | 86 | unsigned remap:1; /* set to remap seven reserved chars in filenames */ |
ac67055e | 87 | unsigned posix_paths:1; /* unset to not ask for posix pathnames. */ |
d7245c2c | 88 | unsigned sfu_emul:1; |
bf820679 | 89 | unsigned nullauth:1; /* attempt to authenticate with null user */ |
c46fa8ac SF |
90 | unsigned nocase; /* request case insensitive filenames */ |
91 | unsigned nobrl; /* disable sending byte range locks to srv */ | |
1da177e4 LT |
92 | unsigned int rsize; |
93 | unsigned int wsize; | |
94 | unsigned int sockopt; | |
95 | unsigned short int port; | |
2fe87f02 | 96 | char * prepath; |
1da177e4 LT |
97 | }; |
98 | ||
99 | static int ipv4_connect(struct sockaddr_in *psin_server, | |
100 | struct socket **csocket, | |
a10faeb2 SF |
101 | char * netb_name, |
102 | char * server_netb_name); | |
1da177e4 LT |
103 | static int ipv6_connect(struct sockaddr_in6 *psin_server, |
104 | struct socket **csocket); | |
105 | ||
106 | ||
107 | /* | |
108 | * cifs tcp session reconnection | |
109 | * | |
110 | * mark tcp session as reconnecting so temporarily locked | |
111 | * mark all smb sessions as reconnecting for tcp session | |
112 | * reconnect tcp session | |
113 | * wake up waiters on reconnection? - (not needed currently) | |
114 | */ | |
115 | ||
2cd646a2 | 116 | static int |
1da177e4 LT |
117 | cifs_reconnect(struct TCP_Server_Info *server) |
118 | { | |
119 | int rc = 0; | |
120 | struct list_head *tmp; | |
121 | struct cifsSesInfo *ses; | |
122 | struct cifsTconInfo *tcon; | |
123 | struct mid_q_entry * mid_entry; | |
124 | ||
125 | spin_lock(&GlobalMid_Lock); | |
aaf737ad | 126 | if( kthread_should_stop() ) { |
1da177e4 LT |
127 | /* the demux thread will exit normally |
128 | next time through the loop */ | |
129 | spin_unlock(&GlobalMid_Lock); | |
130 | return rc; | |
131 | } else | |
132 | server->tcpStatus = CifsNeedReconnect; | |
133 | spin_unlock(&GlobalMid_Lock); | |
134 | server->maxBuf = 0; | |
135 | ||
e4eb295d | 136 | cFYI(1, ("Reconnecting tcp session")); |
1da177e4 LT |
137 | |
138 | /* before reconnecting the tcp session, mark the smb session (uid) | |
139 | and the tid bad so they are not used until reconnected */ | |
140 | read_lock(&GlobalSMBSeslock); | |
141 | list_for_each(tmp, &GlobalSMBSessionList) { | |
142 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
143 | if (ses->server) { | |
144 | if (ses->server == server) { | |
145 | ses->status = CifsNeedReconnect; | |
146 | ses->ipc_tid = 0; | |
147 | } | |
148 | } | |
149 | /* else tcp and smb sessions need reconnection */ | |
150 | } | |
151 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
152 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); | |
153 | if((tcon) && (tcon->ses) && (tcon->ses->server == server)) { | |
154 | tcon->tidStatus = CifsNeedReconnect; | |
155 | } | |
156 | } | |
157 | read_unlock(&GlobalSMBSeslock); | |
158 | /* do not want to be sending data on a socket we are freeing */ | |
159 | down(&server->tcpSem); | |
160 | if(server->ssocket) { | |
161 | cFYI(1,("State: 0x%x Flags: 0x%lx", server->ssocket->state, | |
162 | server->ssocket->flags)); | |
163 | server->ssocket->ops->shutdown(server->ssocket,SEND_SHUTDOWN); | |
164 | cFYI(1,("Post shutdown state: 0x%x Flags: 0x%lx", server->ssocket->state, | |
165 | server->ssocket->flags)); | |
166 | sock_release(server->ssocket); | |
167 | server->ssocket = NULL; | |
168 | } | |
169 | ||
170 | spin_lock(&GlobalMid_Lock); | |
171 | list_for_each(tmp, &server->pending_mid_q) { | |
172 | mid_entry = list_entry(tmp, struct | |
173 | mid_q_entry, | |
174 | qhead); | |
175 | if(mid_entry) { | |
176 | if(mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
09d1db5c SF |
177 | /* Mark other intransit requests as needing |
178 | retry so we do not immediately mark the | |
179 | session bad again (ie after we reconnect | |
180 | below) as they timeout too */ | |
1da177e4 LT |
181 | mid_entry->midState = MID_RETRY_NEEDED; |
182 | } | |
183 | } | |
184 | } | |
185 | spin_unlock(&GlobalMid_Lock); | |
186 | up(&server->tcpSem); | |
187 | ||
aaf737ad | 188 | while ( (!kthread_should_stop()) && (server->tcpStatus != CifsGood)) |
1da177e4 | 189 | { |
6c3d8909 | 190 | try_to_freeze(); |
1da177e4 LT |
191 | if(server->protocolType == IPV6) { |
192 | rc = ipv6_connect(&server->addr.sockAddr6,&server->ssocket); | |
193 | } else { | |
194 | rc = ipv4_connect(&server->addr.sockAddr, | |
195 | &server->ssocket, | |
a10faeb2 SF |
196 | server->workstation_RFC1001_name, |
197 | server->server_RFC1001_name); | |
1da177e4 LT |
198 | } |
199 | if(rc) { | |
b387eaeb | 200 | cFYI(1,("reconnect error %d",rc)); |
0cb766ae | 201 | msleep(3000); |
1da177e4 LT |
202 | } else { |
203 | atomic_inc(&tcpSesReconnectCount); | |
204 | spin_lock(&GlobalMid_Lock); | |
aaf737ad | 205 | if( !kthread_should_stop() ) |
1da177e4 | 206 | server->tcpStatus = CifsGood; |
ad009ac9 SF |
207 | server->sequence_number = 0; |
208 | spin_unlock(&GlobalMid_Lock); | |
1da177e4 LT |
209 | /* atomic_set(&server->inFlight,0);*/ |
210 | wake_up(&server->response_q); | |
211 | } | |
212 | } | |
213 | return rc; | |
214 | } | |
215 | ||
e4eb295d SF |
216 | /* |
217 | return codes: | |
218 | 0 not a transact2, or all data present | |
219 | >0 transact2 with that much data missing | |
220 | -EINVAL = invalid transact2 | |
221 | ||
222 | */ | |
223 | static int check2ndT2(struct smb_hdr * pSMB, unsigned int maxBufSize) | |
224 | { | |
225 | struct smb_t2_rsp * pSMBt; | |
226 | int total_data_size; | |
227 | int data_in_this_rsp; | |
228 | int remaining; | |
229 | ||
230 | if(pSMB->Command != SMB_COM_TRANSACTION2) | |
231 | return 0; | |
232 | ||
233 | /* check for plausible wct, bcc and t2 data and parm sizes */ | |
234 | /* check for parm and data offset going beyond end of smb */ | |
235 | if(pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
236 | cFYI(1,("invalid transact2 word count")); | |
237 | return -EINVAL; | |
238 | } | |
239 | ||
240 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
241 | ||
242 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
243 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
244 | ||
245 | remaining = total_data_size - data_in_this_rsp; | |
246 | ||
247 | if(remaining == 0) | |
248 | return 0; | |
249 | else if(remaining < 0) { | |
250 | cFYI(1,("total data %d smaller than data in frame %d", | |
251 | total_data_size, data_in_this_rsp)); | |
252 | return -EINVAL; | |
253 | } else { | |
254 | cFYI(1,("missing %d bytes from transact2, check next response", | |
255 | remaining)); | |
256 | if(total_data_size > maxBufSize) { | |
257 | cERROR(1,("TotalDataSize %d is over maximum buffer %d", | |
258 | total_data_size,maxBufSize)); | |
259 | return -EINVAL; | |
260 | } | |
261 | return remaining; | |
262 | } | |
263 | } | |
264 | ||
265 | static int coalesce_t2(struct smb_hdr * psecond, struct smb_hdr *pTargetSMB) | |
266 | { | |
267 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
268 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
269 | int total_data_size; | |
270 | int total_in_buf; | |
271 | int remaining; | |
272 | int total_in_buf2; | |
273 | char * data_area_of_target; | |
274 | char * data_area_of_buf2; | |
275 | __u16 byte_count; | |
276 | ||
277 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
278 | ||
279 | if(total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { | |
280 | cFYI(1,("total data sizes of primary and secondary t2 differ")); | |
281 | } | |
282 | ||
283 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
284 | ||
285 | remaining = total_data_size - total_in_buf; | |
286 | ||
287 | if(remaining < 0) | |
288 | return -EINVAL; | |
289 | ||
290 | if(remaining == 0) /* nothing to do, ignore */ | |
291 | return 0; | |
292 | ||
293 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); | |
294 | if(remaining < total_in_buf2) { | |
295 | cFYI(1,("transact2 2nd response contains too much data")); | |
296 | } | |
297 | ||
298 | /* find end of first SMB data area */ | |
299 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + | |
300 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); | |
301 | /* validate target area */ | |
302 | ||
303 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
304 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); | |
305 | ||
306 | data_area_of_target += total_in_buf; | |
307 | ||
308 | /* copy second buffer into end of first buffer */ | |
309 | memcpy(data_area_of_target,data_area_of_buf2,total_in_buf2); | |
310 | total_in_buf += total_in_buf2; | |
311 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
312 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
313 | byte_count += total_in_buf2; | |
314 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
315 | ||
70ca734a | 316 | byte_count = pTargetSMB->smb_buf_length; |
e4eb295d SF |
317 | byte_count += total_in_buf2; |
318 | ||
319 | /* BB also add check that we are not beyond maximum buffer size */ | |
320 | ||
70ca734a | 321 | pTargetSMB->smb_buf_length = byte_count; |
e4eb295d SF |
322 | |
323 | if(remaining == total_in_buf2) { | |
324 | cFYI(1,("found the last secondary response")); | |
325 | return 0; /* we are done */ | |
326 | } else /* more responses to go */ | |
327 | return 1; | |
328 | ||
329 | } | |
330 | ||
1da177e4 LT |
331 | static int |
332 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
333 | { | |
334 | int length; | |
335 | unsigned int pdu_length, total_read; | |
336 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
337 | struct smb_hdr *bigbuf = NULL; |
338 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
339 | struct msghdr smb_msg; |
340 | struct kvec iov; | |
341 | struct socket *csocket = server->ssocket; | |
342 | struct list_head *tmp; | |
343 | struct cifsSesInfo *ses; | |
344 | struct task_struct *task_to_wake = NULL; | |
345 | struct mid_q_entry *mid_entry; | |
70ca734a | 346 | char temp; |
b8643e1b | 347 | int isLargeBuf = FALSE; |
e4eb295d SF |
348 | int isMultiRsp; |
349 | int reconnect; | |
1da177e4 | 350 | |
1da177e4 LT |
351 | current->flags |= PF_MEMALLOC; |
352 | server->tsk = current; /* save process info to wake at shutdown */ | |
353 | cFYI(1, ("Demultiplex PID: %d", current->pid)); | |
354 | write_lock(&GlobalSMBSeslock); | |
355 | atomic_inc(&tcpSesAllocCount); | |
356 | length = tcpSesAllocCount.counter; | |
357 | write_unlock(&GlobalSMBSeslock); | |
f191401f | 358 | complete(&cifsd_complete); |
1da177e4 LT |
359 | if(length > 1) { |
360 | mempool_resize(cifs_req_poolp, | |
361 | length + cifs_min_rcv, | |
362 | GFP_KERNEL); | |
363 | } | |
364 | ||
aaf737ad | 365 | while (!kthread_should_stop()) { |
ede1327e SF |
366 | if (try_to_freeze()) |
367 | continue; | |
b8643e1b SF |
368 | if (bigbuf == NULL) { |
369 | bigbuf = cifs_buf_get(); | |
0fd1ffe0 PM |
370 | if (!bigbuf) { |
371 | cERROR(1, ("No memory for large SMB response")); | |
b8643e1b SF |
372 | msleep(3000); |
373 | /* retry will check if exiting */ | |
374 | continue; | |
375 | } | |
0fd1ffe0 PM |
376 | } else if (isLargeBuf) { |
377 | /* we are reusing a dirty large buf, clear its start */ | |
b8643e1b | 378 | memset(bigbuf, 0, sizeof (struct smb_hdr)); |
1da177e4 | 379 | } |
b8643e1b SF |
380 | |
381 | if (smallbuf == NULL) { | |
382 | smallbuf = cifs_small_buf_get(); | |
0fd1ffe0 PM |
383 | if (!smallbuf) { |
384 | cERROR(1, ("No memory for SMB response")); | |
b8643e1b SF |
385 | msleep(1000); |
386 | /* retry will check if exiting */ | |
387 | continue; | |
388 | } | |
389 | /* beginning of smb buffer is cleared in our buf_get */ | |
390 | } else /* if existing small buf clear beginning */ | |
391 | memset(smallbuf, 0, sizeof (struct smb_hdr)); | |
392 | ||
393 | isLargeBuf = FALSE; | |
e4eb295d | 394 | isMultiRsp = FALSE; |
b8643e1b | 395 | smb_buffer = smallbuf; |
1da177e4 LT |
396 | iov.iov_base = smb_buffer; |
397 | iov.iov_len = 4; | |
398 | smb_msg.msg_control = NULL; | |
399 | smb_msg.msg_controllen = 0; | |
400 | length = | |
401 | kernel_recvmsg(csocket, &smb_msg, | |
402 | &iov, 1, 4, 0 /* BB see socket.h flags */); | |
403 | ||
aaf737ad | 404 | if ( kthread_should_stop() ) { |
1da177e4 LT |
405 | break; |
406 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
0fd1ffe0 | 407 | cFYI(1, ("Reconnect after server stopped responding")); |
1da177e4 | 408 | cifs_reconnect(server); |
0fd1ffe0 | 409 | cFYI(1, ("call to reconnect done")); |
1da177e4 LT |
410 | csocket = server->ssocket; |
411 | continue; | |
412 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 413 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
414 | allowing socket to clear and app threads to set |
415 | tcpStatus CifsNeedReconnect if server hung */ | |
416 | continue; | |
417 | } else if (length <= 0) { | |
0fd1ffe0 PM |
418 | if (server->tcpStatus == CifsNew) { |
419 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
420 | /* some servers kill the TCP session rather than |
421 | returning an SMB negprot error, in which | |
422 | case reconnecting here is not going to help, | |
423 | and so simply return error to mount */ | |
1da177e4 LT |
424 | break; |
425 | } | |
0fd1ffe0 | 426 | if (!try_to_freeze() && (length == -EINTR)) { |
1da177e4 LT |
427 | cFYI(1,("cifsd thread killed")); |
428 | break; | |
429 | } | |
57337e42 SF |
430 | cFYI(1,("Reconnect after unexpected peek error %d", |
431 | length)); | |
1da177e4 LT |
432 | cifs_reconnect(server); |
433 | csocket = server->ssocket; | |
434 | wake_up(&server->response_q); | |
435 | continue; | |
46810cbf SF |
436 | } else if (length < 4) { |
437 | cFYI(1, | |
57337e42 | 438 | ("Frame under four bytes received (%d bytes long)", |
46810cbf SF |
439 | length)); |
440 | cifs_reconnect(server); | |
441 | csocket = server->ssocket; | |
442 | wake_up(&server->response_q); | |
443 | continue; | |
444 | } | |
1da177e4 | 445 | |
70ca734a SF |
446 | /* The right amount was read from socket - 4 bytes */ |
447 | /* so we can now interpret the length field */ | |
46810cbf | 448 | |
70ca734a SF |
449 | /* the first byte big endian of the length field, |
450 | is actually not part of the length but the type | |
451 | with the most common, zero, as regular data */ | |
452 | temp = *((char *) smb_buffer); | |
46810cbf | 453 | |
70ca734a SF |
454 | /* Note that FC 1001 length is big endian on the wire, |
455 | but we convert it here so it is always manipulated | |
456 | as host byte order */ | |
46810cbf | 457 | pdu_length = ntohl(smb_buffer->smb_buf_length); |
70ca734a SF |
458 | smb_buffer->smb_buf_length = pdu_length; |
459 | ||
460 | cFYI(1,("rfc1002 length 0x%x)", pdu_length+4)); | |
46810cbf | 461 | |
70ca734a | 462 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
e4eb295d | 463 | continue; |
70ca734a | 464 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
e4eb295d SF |
465 | cFYI(1,("Good RFC 1002 session rsp")); |
466 | continue; | |
70ca734a | 467 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
46810cbf SF |
468 | /* we get this from Windows 98 instead of |
469 | an error on SMB negprot response */ | |
e4eb295d | 470 | cFYI(1,("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 471 | pdu_length)); |
46810cbf SF |
472 | if(server->tcpStatus == CifsNew) { |
473 | /* if nack on negprot (rather than | |
474 | ret of smb negprot error) reconnecting | |
475 | not going to help, ret error to mount */ | |
476 | break; | |
477 | } else { | |
478 | /* give server a second to | |
479 | clean up before reconnect attempt */ | |
480 | msleep(1000); | |
481 | /* always try 445 first on reconnect | |
482 | since we get NACK on some if we ever | |
483 | connected to port 139 (the NACK is | |
484 | since we do not begin with RFC1001 | |
485 | session initialize frame) */ | |
486 | server->addr.sockAddr.sin_port = | |
487 | htons(CIFS_PORT); | |
1da177e4 LT |
488 | cifs_reconnect(server); |
489 | csocket = server->ssocket; | |
46810cbf | 490 | wake_up(&server->response_q); |
1da177e4 | 491 | continue; |
46810cbf | 492 | } |
70ca734a | 493 | } else if (temp != (char) 0) { |
46810cbf | 494 | cERROR(1,("Unknown RFC 1002 frame")); |
70ca734a SF |
495 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
496 | length); | |
46810cbf SF |
497 | cifs_reconnect(server); |
498 | csocket = server->ssocket; | |
499 | continue; | |
e4eb295d SF |
500 | } |
501 | ||
502 | /* else we have an SMB response */ | |
503 | if((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || | |
46810cbf | 504 | (pdu_length < sizeof (struct smb_hdr) - 1 - 4)) { |
e4eb295d | 505 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 506 | length, pdu_length+4)); |
e4eb295d SF |
507 | cifs_reconnect(server); |
508 | csocket = server->ssocket; | |
509 | wake_up(&server->response_q); | |
510 | continue; | |
511 | } | |
512 | ||
513 | /* else length ok */ | |
514 | reconnect = 0; | |
515 | ||
ec637e3f | 516 | if(pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
e4eb295d SF |
517 | isLargeBuf = TRUE; |
518 | memcpy(bigbuf, smallbuf, 4); | |
519 | smb_buffer = bigbuf; | |
520 | } | |
521 | length = 0; | |
522 | iov.iov_base = 4 + (char *)smb_buffer; | |
523 | iov.iov_len = pdu_length; | |
524 | for (total_read = 0; total_read < pdu_length; | |
525 | total_read += length) { | |
526 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
527 | pdu_length - total_read, 0); | |
aaf737ad | 528 | if( kthread_should_stop() || |
e4eb295d SF |
529 | (length == -EINTR)) { |
530 | /* then will exit */ | |
531 | reconnect = 2; | |
532 | break; | |
533 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
534 | cifs_reconnect(server); |
535 | csocket = server->ssocket; | |
e4eb295d SF |
536 | /* Reconnect wakes up rspns q */ |
537 | /* Now we will reread sock */ | |
538 | reconnect = 1; | |
539 | break; | |
540 | } else if ((length == -ERESTARTSYS) || | |
541 | (length == -EAGAIN)) { | |
542 | msleep(1); /* minimum sleep to prevent looping, | |
543 | allowing socket to clear and app | |
544 | threads to set tcpStatus | |
545 | CifsNeedReconnect if server hung*/ | |
46810cbf | 546 | continue; |
e4eb295d SF |
547 | } else if (length <= 0) { |
548 | cERROR(1,("Received no data, expecting %d", | |
549 | pdu_length - total_read)); | |
550 | cifs_reconnect(server); | |
551 | csocket = server->ssocket; | |
552 | reconnect = 1; | |
553 | break; | |
46810cbf | 554 | } |
e4eb295d SF |
555 | } |
556 | if(reconnect == 2) | |
557 | break; | |
558 | else if(reconnect == 1) | |
559 | continue; | |
1da177e4 | 560 | |
e4eb295d SF |
561 | length += 4; /* account for rfc1002 hdr */ |
562 | ||
09d1db5c | 563 | |
e4eb295d | 564 | dump_smb(smb_buffer, length); |
184ed211 | 565 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 566 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
567 | continue; |
568 | } | |
1da177e4 | 569 | |
e4eb295d SF |
570 | |
571 | task_to_wake = NULL; | |
572 | spin_lock(&GlobalMid_Lock); | |
573 | list_for_each(tmp, &server->pending_mid_q) { | |
574 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
575 | ||
576 | if ((mid_entry->mid == smb_buffer->Mid) && | |
577 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && | |
578 | (mid_entry->command == smb_buffer->Command)) { | |
e4eb295d SF |
579 | if(check2ndT2(smb_buffer,server->maxBuf) > 0) { |
580 | /* We have a multipart transact2 resp */ | |
cd63499c | 581 | isMultiRsp = TRUE; |
e4eb295d SF |
582 | if(mid_entry->resp_buf) { |
583 | /* merge response - fix up 1st*/ | |
584 | if(coalesce_t2(smb_buffer, | |
585 | mid_entry->resp_buf)) { | |
3979877e | 586 | mid_entry->multiRsp = 1; |
e4eb295d SF |
587 | break; |
588 | } else { | |
589 | /* all parts received */ | |
3979877e | 590 | mid_entry->multiEnd = 1; |
e4eb295d SF |
591 | goto multi_t2_fnd; |
592 | } | |
593 | } else { | |
594 | if(!isLargeBuf) { | |
595 | cERROR(1,("1st trans2 resp needs bigbuf")); | |
596 | /* BB maybe we can fix this up, switch | |
597 | to already allocated large buffer? */ | |
598 | } else { | |
cd63499c | 599 | /* Have first buffer */ |
e4eb295d SF |
600 | mid_entry->resp_buf = |
601 | smb_buffer; | |
602 | mid_entry->largeBuf = 1; | |
e4eb295d SF |
603 | bigbuf = NULL; |
604 | } | |
605 | } | |
606 | break; | |
607 | } | |
608 | mid_entry->resp_buf = smb_buffer; | |
46810cbf | 609 | if(isLargeBuf) |
e4eb295d | 610 | mid_entry->largeBuf = 1; |
46810cbf | 611 | else |
e4eb295d SF |
612 | mid_entry->largeBuf = 0; |
613 | multi_t2_fnd: | |
614 | task_to_wake = mid_entry->tsk; | |
615 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
616 | #ifdef CONFIG_CIFS_STATS2 |
617 | mid_entry->when_received = jiffies; | |
618 | #endif | |
3a5ff61c SF |
619 | /* so we do not time out requests to server |
620 | which is still responding (since server could | |
621 | be busy but not dead) */ | |
622 | server->lstrp = jiffies; | |
e4eb295d | 623 | break; |
46810cbf | 624 | } |
1da177e4 | 625 | } |
e4eb295d SF |
626 | spin_unlock(&GlobalMid_Lock); |
627 | if (task_to_wake) { | |
cd63499c SF |
628 | /* Was previous buf put in mpx struct for multi-rsp? */ |
629 | if(!isMultiRsp) { | |
630 | /* smb buffer will be freed by user thread */ | |
631 | if(isLargeBuf) { | |
632 | bigbuf = NULL; | |
633 | } else | |
634 | smallbuf = NULL; | |
635 | } | |
e4eb295d | 636 | wake_up_process(task_to_wake); |
d7c8c94d | 637 | } else if ((is_valid_oplock_break(smb_buffer, server) == FALSE) |
e4eb295d | 638 | && (isMultiRsp == FALSE)) { |
3979877e | 639 | cERROR(1, ("No task to wake, unknown frame rcvd! NumMids %d", midCount.counter)); |
70ca734a SF |
640 | cifs_dump_mem("Received Data is: ",(char *)smb_buffer, |
641 | sizeof(struct smb_hdr)); | |
3979877e SF |
642 | #ifdef CONFIG_CIFS_DEBUG2 |
643 | cifs_dump_detail(smb_buffer); | |
644 | cifs_dump_mids(server); | |
645 | #endif /* CIFS_DEBUG2 */ | |
646 | ||
e4eb295d SF |
647 | } |
648 | } /* end while !EXITING */ | |
649 | ||
1da177e4 LT |
650 | spin_lock(&GlobalMid_Lock); |
651 | server->tcpStatus = CifsExiting; | |
652 | server->tsk = NULL; | |
31ca3bc3 SF |
653 | /* check if we have blocked requests that need to free */ |
654 | /* Note that cifs_max_pending is normally 50, but | |
655 | can be set at module install time to as little as two */ | |
656 | if(atomic_read(&server->inFlight) >= cifs_max_pending) | |
657 | atomic_set(&server->inFlight, cifs_max_pending - 1); | |
658 | /* We do not want to set the max_pending too low or we | |
659 | could end up with the counter going negative */ | |
1da177e4 LT |
660 | spin_unlock(&GlobalMid_Lock); |
661 | /* Although there should not be any requests blocked on | |
662 | this queue it can not hurt to be paranoid and try to wake up requests | |
09d1db5c | 663 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
664 | to the same server - they now will see the session is in exit state |
665 | and get out of SendReceive. */ | |
666 | wake_up_all(&server->request_q); | |
667 | /* give those requests time to exit */ | |
b8643e1b SF |
668 | msleep(125); |
669 | ||
1da177e4 LT |
670 | if(server->ssocket) { |
671 | sock_release(csocket); | |
672 | server->ssocket = NULL; | |
673 | } | |
b8643e1b SF |
674 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
675 | if (bigbuf != NULL) | |
676 | cifs_buf_release(bigbuf); | |
677 | if (smallbuf != NULL) | |
678 | cifs_small_buf_release(smallbuf); | |
1da177e4 LT |
679 | |
680 | read_lock(&GlobalSMBSeslock); | |
681 | if (list_empty(&server->pending_mid_q)) { | |
09d1db5c SF |
682 | /* loop through server session structures attached to this and |
683 | mark them dead */ | |
1da177e4 LT |
684 | list_for_each(tmp, &GlobalSMBSessionList) { |
685 | ses = | |
686 | list_entry(tmp, struct cifsSesInfo, | |
687 | cifsSessionList); | |
688 | if (ses->server == server) { | |
689 | ses->status = CifsExiting; | |
690 | ses->server = NULL; | |
691 | } | |
692 | } | |
693 | read_unlock(&GlobalSMBSeslock); | |
694 | } else { | |
31ca3bc3 SF |
695 | /* although we can not zero the server struct pointer yet, |
696 | since there are active requests which may depnd on them, | |
697 | mark the corresponding SMB sessions as exiting too */ | |
698 | list_for_each(tmp, &GlobalSMBSessionList) { | |
699 | ses = list_entry(tmp, struct cifsSesInfo, | |
700 | cifsSessionList); | |
701 | if (ses->server == server) { | |
702 | ses->status = CifsExiting; | |
703 | } | |
704 | } | |
705 | ||
1da177e4 LT |
706 | spin_lock(&GlobalMid_Lock); |
707 | list_for_each(tmp, &server->pending_mid_q) { | |
708 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
709 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
710 | cFYI(1, | |
09d1db5c | 711 | ("Clearing Mid 0x%x - waking up ",mid_entry->mid)); |
1da177e4 LT |
712 | task_to_wake = mid_entry->tsk; |
713 | if(task_to_wake) { | |
714 | wake_up_process(task_to_wake); | |
715 | } | |
716 | } | |
717 | } | |
718 | spin_unlock(&GlobalMid_Lock); | |
719 | read_unlock(&GlobalSMBSeslock); | |
1da177e4 | 720 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 721 | msleep(125); |
1da177e4 LT |
722 | } |
723 | ||
f191401f | 724 | if (!list_empty(&server->pending_mid_q)) { |
1da177e4 LT |
725 | /* mpx threads have not exited yet give them |
726 | at least the smb send timeout time for long ops */ | |
31ca3bc3 SF |
727 | /* due to delays on oplock break requests, we need |
728 | to wait at least 45 seconds before giving up | |
729 | on a request getting a response and going ahead | |
730 | and killing cifsd */ | |
1da177e4 | 731 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 732 | msleep(46000); |
1da177e4 LT |
733 | /* if threads still have not exited they are probably never |
734 | coming home not much else we can do but free the memory */ | |
735 | } | |
1da177e4 LT |
736 | |
737 | write_lock(&GlobalSMBSeslock); | |
738 | atomic_dec(&tcpSesAllocCount); | |
739 | length = tcpSesAllocCount.counter; | |
31ca3bc3 SF |
740 | |
741 | /* last chance to mark ses pointers invalid | |
742 | if there are any pointing to this (e.g | |
743 | if a crazy root user tried to kill cifsd | |
744 | kernel thread explicitly this might happen) */ | |
745 | list_for_each(tmp, &GlobalSMBSessionList) { | |
746 | ses = list_entry(tmp, struct cifsSesInfo, | |
747 | cifsSessionList); | |
748 | if (ses->server == server) { | |
749 | ses->server = NULL; | |
750 | } | |
751 | } | |
1da177e4 | 752 | write_unlock(&GlobalSMBSeslock); |
31ca3bc3 SF |
753 | |
754 | kfree(server); | |
1da177e4 LT |
755 | if(length > 0) { |
756 | mempool_resize(cifs_req_poolp, | |
757 | length + cifs_min_rcv, | |
758 | GFP_KERNEL); | |
759 | } | |
b8643e1b | 760 | |
1da177e4 LT |
761 | return 0; |
762 | } | |
763 | ||
1da177e4 LT |
764 | static int |
765 | cifs_parse_mount_options(char *options, const char *devname,struct smb_vol *vol) | |
766 | { | |
767 | char *value; | |
768 | char *data; | |
769 | unsigned int temp_len, i, j; | |
770 | char separator[2]; | |
771 | ||
772 | separator[0] = ','; | |
773 | separator[1] = 0; | |
774 | ||
12e36b2f | 775 | if (Local_System_Name[0] != 0) |
2cd646a2 SF |
776 | memcpy(vol->source_rfc1001_name, Local_System_Name,15); |
777 | else { | |
12e36b2f LT |
778 | char *nodename = utsname()->nodename; |
779 | int n = strnlen(nodename,15); | |
2cd646a2 | 780 | memset(vol->source_rfc1001_name,0x20,15); |
12e36b2f | 781 | for(i=0 ; i < n ; i++) { |
2cd646a2 SF |
782 | /* does not have to be perfect mapping since field is |
783 | informational, only used for servers that do not support | |
784 | port 445 and it can be overridden at mount time */ | |
12e36b2f | 785 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
2cd646a2 | 786 | } |
1da177e4 LT |
787 | } |
788 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
789 | /* null target name indicates to use *SMBSERVR default called name |
790 | if we end up sending RFC1001 session initialize */ | |
791 | vol->target_rfc1001_name[0] = 0; | |
1da177e4 LT |
792 | vol->linux_uid = current->uid; /* current->euid instead? */ |
793 | vol->linux_gid = current->gid; | |
794 | vol->dir_mode = S_IRWXUGO; | |
795 | /* 2767 perms indicate mandatory locking support */ | |
796 | vol->file_mode = S_IALLUGO & ~(S_ISUID | S_IXGRP); | |
797 | ||
798 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
799 | vol->rw = TRUE; | |
ac67055e JA |
800 | /* default is always to request posix paths. */ |
801 | vol->posix_paths = 1; | |
802 | ||
1da177e4 LT |
803 | if (!options) |
804 | return 1; | |
805 | ||
806 | if(strncmp(options,"sep=",4) == 0) { | |
807 | if(options[4] != 0) { | |
808 | separator[0] = options[4]; | |
809 | options += 5; | |
810 | } else { | |
811 | cFYI(1,("Null separator not allowed")); | |
812 | } | |
813 | } | |
814 | ||
815 | while ((data = strsep(&options, separator)) != NULL) { | |
816 | if (!*data) | |
817 | continue; | |
818 | if ((value = strchr(data, '=')) != NULL) | |
819 | *value++ = '\0'; | |
820 | ||
821 | if (strnicmp(data, "user_xattr",10) == 0) {/*parse before user*/ | |
822 | vol->no_xattr = 0; | |
823 | } else if (strnicmp(data, "nouser_xattr",12) == 0) { | |
824 | vol->no_xattr = 1; | |
825 | } else if (strnicmp(data, "user", 4) == 0) { | |
4b952a9b | 826 | if (!value) { |
1da177e4 LT |
827 | printk(KERN_WARNING |
828 | "CIFS: invalid or missing username\n"); | |
829 | return 1; /* needs_arg; */ | |
4b952a9b SF |
830 | } else if(!*value) { |
831 | /* null user, ie anonymous, authentication */ | |
832 | vol->nullauth = 1; | |
1da177e4 LT |
833 | } |
834 | if (strnlen(value, 200) < 200) { | |
835 | vol->username = value; | |
836 | } else { | |
837 | printk(KERN_WARNING "CIFS: username too long\n"); | |
838 | return 1; | |
839 | } | |
840 | } else if (strnicmp(data, "pass", 4) == 0) { | |
841 | if (!value) { | |
842 | vol->password = NULL; | |
843 | continue; | |
844 | } else if(value[0] == 0) { | |
845 | /* check if string begins with double comma | |
846 | since that would mean the password really | |
847 | does start with a comma, and would not | |
848 | indicate an empty string */ | |
849 | if(value[1] != separator[0]) { | |
850 | vol->password = NULL; | |
851 | continue; | |
852 | } | |
853 | } | |
854 | temp_len = strlen(value); | |
855 | /* removed password length check, NTLM passwords | |
856 | can be arbitrarily long */ | |
857 | ||
858 | /* if comma in password, the string will be | |
859 | prematurely null terminated. Commas in password are | |
860 | specified across the cifs mount interface by a double | |
861 | comma ie ,, and a comma used as in other cases ie ',' | |
862 | as a parameter delimiter/separator is single and due | |
863 | to the strsep above is temporarily zeroed. */ | |
864 | ||
865 | /* NB: password legally can have multiple commas and | |
866 | the only illegal character in a password is null */ | |
867 | ||
09d1db5c SF |
868 | if ((value[temp_len] == 0) && |
869 | (value[temp_len+1] == separator[0])) { | |
1da177e4 LT |
870 | /* reinsert comma */ |
871 | value[temp_len] = separator[0]; | |
872 | temp_len+=2; /* move after the second comma */ | |
873 | while(value[temp_len] != 0) { | |
874 | if (value[temp_len] == separator[0]) { | |
09d1db5c SF |
875 | if (value[temp_len+1] == |
876 | separator[0]) { | |
877 | /* skip second comma */ | |
878 | temp_len++; | |
1da177e4 LT |
879 | } else { |
880 | /* single comma indicating start | |
881 | of next parm */ | |
882 | break; | |
883 | } | |
884 | } | |
885 | temp_len++; | |
886 | } | |
887 | if(value[temp_len] == 0) { | |
888 | options = NULL; | |
889 | } else { | |
890 | value[temp_len] = 0; | |
891 | /* point option to start of next parm */ | |
892 | options = value + temp_len + 1; | |
893 | } | |
894 | /* go from value to value + temp_len condensing | |
895 | double commas to singles. Note that this ends up | |
896 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 897 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
433dc24f SF |
898 | if(vol->password == NULL) { |
899 | printk("CIFS: no memory for pass\n"); | |
900 | return 1; | |
901 | } | |
1da177e4 LT |
902 | for(i=0,j=0;i<temp_len;i++,j++) { |
903 | vol->password[j] = value[i]; | |
09d1db5c SF |
904 | if(value[i] == separator[0] |
905 | && value[i+1] == separator[0]) { | |
1da177e4 LT |
906 | /* skip second comma */ |
907 | i++; | |
908 | } | |
909 | } | |
910 | vol->password[j] = 0; | |
911 | } else { | |
e915fc49 | 912 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
433dc24f SF |
913 | if(vol->password == NULL) { |
914 | printk("CIFS: no memory for pass\n"); | |
915 | return 1; | |
916 | } | |
1da177e4 LT |
917 | strcpy(vol->password, value); |
918 | } | |
919 | } else if (strnicmp(data, "ip", 2) == 0) { | |
920 | if (!value || !*value) { | |
921 | vol->UNCip = NULL; | |
922 | } else if (strnlen(value, 35) < 35) { | |
923 | vol->UNCip = value; | |
924 | } else { | |
925 | printk(KERN_WARNING "CIFS: ip address too long\n"); | |
926 | return 1; | |
927 | } | |
bf820679 SF |
928 | } else if (strnicmp(data, "sec", 3) == 0) { |
929 | if (!value || !*value) { | |
930 | cERROR(1,("no security value specified")); | |
931 | continue; | |
932 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
750d1151 | 933 | vol->secFlg |= CIFSSEC_MAY_KRB5 | |
189acaae | 934 | CIFSSEC_MUST_SIGN; |
bf820679 | 935 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
750d1151 | 936 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
189acaae | 937 | CIFSSEC_MAY_KRB5; */ |
bf820679 SF |
938 | cERROR(1,("Krb5 cifs privacy not supported")); |
939 | return 1; | |
940 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 941 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
bf820679 | 942 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 943 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 944 | CIFSSEC_MUST_SIGN; |
bf820679 | 945 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 946 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 947 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 948 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 949 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
950 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
951 | /* ntlm is default so can be turned off too */ | |
750d1151 | 952 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 953 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 954 | /* BB is there a better way to do this? */ |
750d1151 | 955 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
956 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
957 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
750d1151 | 958 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 959 | #endif |
bf820679 | 960 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 961 | vol->nullauth = 1; |
bf820679 SF |
962 | } else { |
963 | cERROR(1,("bad security option: %s", value)); | |
964 | return 1; | |
965 | } | |
1da177e4 LT |
966 | } else if ((strnicmp(data, "unc", 3) == 0) |
967 | || (strnicmp(data, "target", 6) == 0) | |
968 | || (strnicmp(data, "path", 4) == 0)) { | |
969 | if (!value || !*value) { | |
970 | printk(KERN_WARNING | |
971 | "CIFS: invalid path to network resource\n"); | |
972 | return 1; /* needs_arg; */ | |
973 | } | |
974 | if ((temp_len = strnlen(value, 300)) < 300) { | |
975 | vol->UNC = kmalloc(temp_len+1,GFP_KERNEL); | |
4523cc30 | 976 | if (vol->UNC == NULL) |
1da177e4 LT |
977 | return 1; |
978 | strcpy(vol->UNC,value); | |
979 | if (strncmp(vol->UNC, "//", 2) == 0) { | |
980 | vol->UNC[0] = '\\'; | |
981 | vol->UNC[1] = '\\'; | |
982 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
983 | printk(KERN_WARNING | |
984 | "CIFS: UNC Path does not begin with // or \\\\ \n"); | |
985 | return 1; | |
986 | } | |
987 | } else { | |
988 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
989 | return 1; | |
990 | } | |
991 | } else if ((strnicmp(data, "domain", 3) == 0) | |
992 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
993 | if (!value || !*value) { | |
994 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
995 | return 1; /* needs_arg; */ | |
996 | } | |
997 | /* BB are there cases in which a comma can be valid in | |
998 | a domain name and need special handling? */ | |
3979877e | 999 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
1000 | vol->domainname = value; |
1001 | cFYI(1, ("Domain name set")); | |
1002 | } else { | |
1003 | printk(KERN_WARNING "CIFS: domain name too long\n"); | |
1004 | return 1; | |
1005 | } | |
2fe87f02 SF |
1006 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
1007 | if (!value || !*value) { | |
1008 | printk(KERN_WARNING | |
1009 | "CIFS: invalid path prefix\n"); | |
1010 | return 1; /* needs_arg; */ | |
1011 | } | |
1012 | if ((temp_len = strnlen(value, 1024)) < 1024) { | |
4523cc30 | 1013 | if (value[0] != '/') |
2fe87f02 SF |
1014 | temp_len++; /* missing leading slash */ |
1015 | vol->prepath = kmalloc(temp_len+1,GFP_KERNEL); | |
4523cc30 | 1016 | if (vol->prepath == NULL) |
2fe87f02 | 1017 | return 1; |
4523cc30 | 1018 | if (value[0] != '/') { |
2fe87f02 SF |
1019 | vol->prepath[0] = '/'; |
1020 | strcpy(vol->prepath+1,value); | |
1021 | } else | |
1022 | strcpy(vol->prepath,value); | |
1023 | cFYI(1,("prefix path %s",vol->prepath)); | |
1024 | } else { | |
1025 | printk(KERN_WARNING "CIFS: prefix too long\n"); | |
1026 | return 1; | |
1027 | } | |
1da177e4 LT |
1028 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
1029 | if (!value || !*value) { | |
1030 | printk(KERN_WARNING "CIFS: invalid iocharset specified\n"); | |
1031 | return 1; /* needs_arg; */ | |
1032 | } | |
1033 | if (strnlen(value, 65) < 65) { | |
4523cc30 | 1034 | if (strnicmp(value,"default",7)) |
1da177e4 LT |
1035 | vol->iocharset = value; |
1036 | /* if iocharset not set load_nls_default used by caller */ | |
1037 | cFYI(1, ("iocharset set to %s",value)); | |
1038 | } else { | |
1039 | printk(KERN_WARNING "CIFS: iocharset name too long.\n"); | |
1040 | return 1; | |
1041 | } | |
1042 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1043 | if (value && *value) { | |
1044 | vol->linux_uid = | |
1045 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1046 | vol->override_uid = 1; |
1da177e4 LT |
1047 | } |
1048 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1049 | if (value && *value) { | |
1050 | vol->linux_gid = | |
1051 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1052 | vol->override_gid = 1; |
1da177e4 LT |
1053 | } |
1054 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1055 | if (value && *value) { | |
1056 | vol->file_mode = | |
1057 | simple_strtoul(value, &value, 0); | |
1058 | } | |
1059 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1060 | if (value && *value) { | |
1061 | vol->dir_mode = | |
1062 | simple_strtoul(value, &value, 0); | |
1063 | } | |
1064 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1065 | if (value && *value) { | |
1066 | vol->dir_mode = | |
1067 | simple_strtoul(value, &value, 0); | |
1068 | } | |
1069 | } else if (strnicmp(data, "port", 4) == 0) { | |
1070 | if (value && *value) { | |
1071 | vol->port = | |
1072 | simple_strtoul(value, &value, 0); | |
1073 | } | |
1074 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1075 | if (value && *value) { | |
1076 | vol->rsize = | |
1077 | simple_strtoul(value, &value, 0); | |
1078 | } | |
1079 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1080 | if (value && *value) { | |
1081 | vol->wsize = | |
1082 | simple_strtoul(value, &value, 0); | |
1083 | } | |
1084 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1085 | if (value && *value) { | |
1086 | vol->sockopt = | |
1087 | simple_strtoul(value, &value, 0); | |
1088 | } | |
1089 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1090 | if (!value || !*value || (*value == ' ')) { | |
1091 | cFYI(1,("invalid (empty) netbiosname specified")); | |
1092 | } else { | |
1093 | memset(vol->source_rfc1001_name,0x20,15); | |
1094 | for(i=0;i<15;i++) { | |
1095 | /* BB are there cases in which a comma can be | |
1096 | valid in this workstation netbios name (and need | |
1097 | special handling)? */ | |
1098 | ||
1099 | /* We do not uppercase netbiosname for user */ | |
1100 | if (value[i]==0) | |
1101 | break; | |
1102 | else | |
1103 | vol->source_rfc1001_name[i] = value[i]; | |
1104 | } | |
1105 | /* The string has 16th byte zero still from | |
1106 | set at top of the function */ | |
4523cc30 | 1107 | if ((i==15) && (value[i] != 0)) |
a10faeb2 SF |
1108 | printk(KERN_WARNING "CIFS: netbiosname longer than 15 truncated.\n"); |
1109 | } | |
1110 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1111 | /* servernetbiosname specified override *SMBSERVER */ | |
1112 | if (!value || !*value || (*value == ' ')) { | |
1113 | cFYI(1,("empty server netbiosname specified")); | |
1114 | } else { | |
1115 | /* last byte, type, is 0x20 for servr type */ | |
1116 | memset(vol->target_rfc1001_name,0x20,16); | |
1117 | ||
1118 | for(i=0;i<15;i++) { | |
1119 | /* BB are there cases in which a comma can be | |
1120 | valid in this workstation netbios name (and need | |
1121 | special handling)? */ | |
1122 | ||
1123 | /* user or mount helper must uppercase netbiosname */ | |
1124 | if (value[i]==0) | |
1125 | break; | |
1126 | else | |
1127 | vol->target_rfc1001_name[i] = value[i]; | |
1128 | } | |
1129 | /* The string has 16th byte zero still from | |
1130 | set at top of the function */ | |
4523cc30 | 1131 | if ((i==15) && (value[i] != 0)) |
a10faeb2 | 1132 | printk(KERN_WARNING "CIFS: server netbiosname longer than 15 truncated.\n"); |
1da177e4 LT |
1133 | } |
1134 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1135 | /* ignore */ | |
1136 | } else if (strnicmp(data, "version", 3) == 0) { | |
1137 | /* ignore */ | |
1138 | } else if (strnicmp(data, "guest",5) == 0) { | |
1139 | /* ignore */ | |
1140 | } else if (strnicmp(data, "rw", 2) == 0) { | |
1141 | vol->rw = TRUE; | |
1142 | } else if ((strnicmp(data, "suid", 4) == 0) || | |
1143 | (strnicmp(data, "nosuid", 6) == 0) || | |
1144 | (strnicmp(data, "exec", 4) == 0) || | |
1145 | (strnicmp(data, "noexec", 6) == 0) || | |
1146 | (strnicmp(data, "nodev", 5) == 0) || | |
1147 | (strnicmp(data, "noauto", 6) == 0) || | |
1148 | (strnicmp(data, "dev", 3) == 0)) { | |
1149 | /* The mount tool or mount.cifs helper (if present) | |
1150 | uses these opts to set flags, and the flags are read | |
1151 | by the kernel vfs layer before we get here (ie | |
1152 | before read super) so there is no point trying to | |
1153 | parse these options again and set anything and it | |
1154 | is ok to just ignore them */ | |
1155 | continue; | |
1156 | } else if (strnicmp(data, "ro", 2) == 0) { | |
1157 | vol->rw = FALSE; | |
1158 | } else if (strnicmp(data, "hard", 4) == 0) { | |
1159 | vol->retry = 1; | |
1160 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1161 | vol->retry = 0; | |
1162 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1163 | vol->noperm = 0; | |
1164 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1165 | vol->noperm = 1; | |
6a0b4824 SF |
1166 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1167 | vol->remap = 1; | |
1168 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1169 | vol->remap = 0; | |
d7245c2c SF |
1170 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1171 | vol->sfu_emul = 1; | |
1172 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1173 | vol->sfu_emul = 0; | |
ac67055e JA |
1174 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1175 | vol->posix_paths = 1; | |
1176 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1177 | vol->posix_paths = 0; | |
a10faeb2 SF |
1178 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
1179 | (strnicmp(data, "ignorecase", 10) == 0)) { | |
c46fa8ac SF |
1180 | vol->nocase = 1; |
1181 | } else if (strnicmp(data, "brl", 3) == 0) { | |
1182 | vol->nobrl = 0; | |
cb8be640 | 1183 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1184 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1185 | vol->nobrl = 1; |
d3485d37 SF |
1186 | /* turn off mandatory locking in mode |
1187 | if remote locking is turned off since the | |
1188 | local vfs will do advisory */ | |
1189 | if(vol->file_mode == (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
1190 | vol->file_mode = S_IALLUGO; | |
1da177e4 LT |
1191 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1192 | vol->setuids = 1; | |
1193 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1194 | vol->setuids = 0; | |
1195 | } else if (strnicmp(data, "nohard", 6) == 0) { | |
1196 | vol->retry = 0; | |
1197 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1198 | vol->retry = 1; | |
1199 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1200 | vol->intr = 0; | |
1201 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1202 | vol->intr = 1; | |
1203 | } else if (strnicmp(data, "serverino",7) == 0) { | |
1204 | vol->server_ino = 1; | |
1205 | } else if (strnicmp(data, "noserverino",9) == 0) { | |
1206 | vol->server_ino = 0; | |
0a4b92c0 SF |
1207 | } else if (strnicmp(data, "cifsacl",7) == 0) { |
1208 | vol->cifs_acl = 1; | |
1209 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1210 | vol->cifs_acl = 0; | |
1da177e4 LT |
1211 | } else if (strnicmp(data, "acl",3) == 0) { |
1212 | vol->no_psx_acl = 0; | |
1213 | } else if (strnicmp(data, "noacl",5) == 0) { | |
1214 | vol->no_psx_acl = 1; | |
750d1151 SF |
1215 | } else if (strnicmp(data, "sign",4) == 0) { |
1216 | vol->secFlg |= CIFSSEC_MUST_SIGN; | |
1217 | /* } else if (strnicmp(data, "seal",4) == 0) { | |
1218 | vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
1da177e4 LT |
1219 | } else if (strnicmp(data, "direct",6) == 0) { |
1220 | vol->direct_io = 1; | |
1221 | } else if (strnicmp(data, "forcedirectio",13) == 0) { | |
1222 | vol->direct_io = 1; | |
1223 | } else if (strnicmp(data, "in6_addr",8) == 0) { | |
1224 | if (!value || !*value) { | |
1225 | vol->in6_addr = NULL; | |
1226 | } else if (strnlen(value, 49) == 48) { | |
1227 | vol->in6_addr = value; | |
1228 | } else { | |
1229 | printk(KERN_WARNING "CIFS: ip v6 address not 48 characters long\n"); | |
1230 | return 1; | |
1231 | } | |
1232 | } else if (strnicmp(data, "noac", 4) == 0) { | |
1233 | printk(KERN_WARNING "CIFS: Mount option noac not supported. Instead set /proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1234 | } else | |
1235 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n",data); | |
1236 | } | |
1237 | if (vol->UNC == NULL) { | |
4523cc30 | 1238 | if (devname == NULL) { |
1da177e4 LT |
1239 | printk(KERN_WARNING "CIFS: Missing UNC name for mount target\n"); |
1240 | return 1; | |
1241 | } | |
1242 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
1243 | vol->UNC = kmalloc(temp_len+1,GFP_KERNEL); | |
4523cc30 | 1244 | if (vol->UNC == NULL) |
1da177e4 LT |
1245 | return 1; |
1246 | strcpy(vol->UNC,devname); | |
1247 | if (strncmp(vol->UNC, "//", 2) == 0) { | |
1248 | vol->UNC[0] = '\\'; | |
1249 | vol->UNC[1] = '\\'; | |
1250 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
1251 | printk(KERN_WARNING "CIFS: UNC Path does not begin with // or \\\\ \n"); | |
1252 | return 1; | |
1253 | } | |
1254 | } else { | |
1255 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1256 | return 1; | |
1257 | } | |
1258 | } | |
1259 | if(vol->UNCip == NULL) | |
1260 | vol->UNCip = &vol->UNC[2]; | |
1261 | ||
1262 | return 0; | |
1263 | } | |
1264 | ||
1265 | static struct cifsSesInfo * | |
1266 | cifs_find_tcp_session(struct in_addr * target_ip_addr, | |
1267 | struct in6_addr *target_ip6_addr, | |
1268 | char *userName, struct TCP_Server_Info **psrvTcp) | |
1269 | { | |
1270 | struct list_head *tmp; | |
1271 | struct cifsSesInfo *ses; | |
1272 | *psrvTcp = NULL; | |
1273 | read_lock(&GlobalSMBSeslock); | |
1274 | ||
1275 | list_for_each(tmp, &GlobalSMBSessionList) { | |
1276 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
1277 | if (ses->server) { | |
1278 | if((target_ip_addr && | |
1279 | (ses->server->addr.sockAddr.sin_addr.s_addr | |
1280 | == target_ip_addr->s_addr)) || (target_ip6_addr | |
1281 | && memcmp(&ses->server->addr.sockAddr6.sin6_addr, | |
1282 | target_ip6_addr,sizeof(*target_ip6_addr)))){ | |
1283 | /* BB lock server and tcp session and increment use count here?? */ | |
1284 | *psrvTcp = ses->server; /* found a match on the TCP session */ | |
1285 | /* BB check if reconnection needed */ | |
1286 | if (strncmp | |
1287 | (ses->userName, userName, | |
1288 | MAX_USERNAME_SIZE) == 0){ | |
1289 | read_unlock(&GlobalSMBSeslock); | |
1290 | return ses; /* found exact match on both tcp and SMB sessions */ | |
1291 | } | |
1292 | } | |
1293 | } | |
1294 | /* else tcp and smb sessions need reconnection */ | |
1295 | } | |
1296 | read_unlock(&GlobalSMBSeslock); | |
1297 | return NULL; | |
1298 | } | |
1299 | ||
1300 | static struct cifsTconInfo * | |
1301 | find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) | |
1302 | { | |
1303 | struct list_head *tmp; | |
1304 | struct cifsTconInfo *tcon; | |
1305 | ||
1306 | read_lock(&GlobalSMBSeslock); | |
1307 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
e466e487 | 1308 | cFYI(1, ("Next tcon")); |
1da177e4 LT |
1309 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); |
1310 | if (tcon->ses) { | |
1311 | if (tcon->ses->server) { | |
1312 | cFYI(1, | |
e466e487 | 1313 | ("old ip addr: %x == new ip %x ?", |
1da177e4 LT |
1314 | tcon->ses->server->addr.sockAddr.sin_addr. |
1315 | s_addr, new_target_ip_addr)); | |
1316 | if (tcon->ses->server->addr.sockAddr.sin_addr. | |
1317 | s_addr == new_target_ip_addr) { | |
e466e487 | 1318 | /* BB lock tcon, server and tcp session and increment use count here? */ |
1da177e4 LT |
1319 | /* found a match on the TCP session */ |
1320 | /* BB check if reconnection needed */ | |
e466e487 | 1321 | cFYI(1,("IP match, old UNC: %s new: %s", |
1da177e4 LT |
1322 | tcon->treeName, uncName)); |
1323 | if (strncmp | |
1324 | (tcon->treeName, uncName, | |
1325 | MAX_TREE_SIZE) == 0) { | |
1326 | cFYI(1, | |
e466e487 | 1327 | ("and old usr: %s new: %s", |
1da177e4 LT |
1328 | tcon->treeName, uncName)); |
1329 | if (strncmp | |
1330 | (tcon->ses->userName, | |
1331 | userName, | |
1332 | MAX_USERNAME_SIZE) == 0) { | |
1333 | read_unlock(&GlobalSMBSeslock); | |
e466e487 SF |
1334 | /* matched smb session |
1335 | (user name */ | |
1336 | return tcon; | |
1da177e4 LT |
1337 | } |
1338 | } | |
1339 | } | |
1340 | } | |
1341 | } | |
1342 | } | |
1343 | read_unlock(&GlobalSMBSeslock); | |
1344 | return NULL; | |
1345 | } | |
1346 | ||
1347 | int | |
1348 | connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo, | |
737b758c SF |
1349 | const char *old_path, const struct nls_table *nls_codepage, |
1350 | int remap) | |
1da177e4 LT |
1351 | { |
1352 | unsigned char *referrals = NULL; | |
1353 | unsigned int num_referrals; | |
1354 | int rc = 0; | |
1355 | ||
1356 | rc = get_dfs_path(xid, pSesInfo,old_path, nls_codepage, | |
737b758c | 1357 | &num_referrals, &referrals, remap); |
1da177e4 LT |
1358 | |
1359 | /* BB Add in code to: if valid refrl, if not ip address contact | |
1360 | the helper that resolves tcp names, mount to it, try to | |
1361 | tcon to it unmount it if fail */ | |
1362 | ||
f99d49ad | 1363 | kfree(referrals); |
1da177e4 LT |
1364 | |
1365 | return rc; | |
1366 | } | |
1367 | ||
1368 | int | |
1369 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, | |
1370 | const char *old_path, const struct nls_table *nls_codepage, | |
737b758c SF |
1371 | unsigned int *pnum_referrals, |
1372 | unsigned char ** preferrals, int remap) | |
1da177e4 LT |
1373 | { |
1374 | char *temp_unc; | |
1375 | int rc = 0; | |
1376 | ||
1377 | *pnum_referrals = 0; | |
1378 | ||
1379 | if (pSesInfo->ipc_tid == 0) { | |
1380 | temp_unc = kmalloc(2 /* for slashes */ + | |
1381 | strnlen(pSesInfo->serverName,SERVER_NAME_LEN_WITH_NULL * 2) | |
1382 | + 1 + 4 /* slash IPC$ */ + 2, | |
1383 | GFP_KERNEL); | |
1384 | if (temp_unc == NULL) | |
1385 | return -ENOMEM; | |
1386 | temp_unc[0] = '\\'; | |
1387 | temp_unc[1] = '\\'; | |
1388 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1389 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1390 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1391 | cFYI(1, | |
1392 | ("CIFS Tcon rc = %d ipc_tid = %d", rc,pSesInfo->ipc_tid)); | |
1393 | kfree(temp_unc); | |
1394 | } | |
1395 | if (rc == 0) | |
1396 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, | |
737b758c | 1397 | pnum_referrals, nls_codepage, remap); |
1da177e4 LT |
1398 | |
1399 | return rc; | |
1400 | } | |
1401 | ||
1402 | /* See RFC1001 section 14 on representation of Netbios names */ | |
1403 | static void rfc1002mangle(char * target,char * source, unsigned int length) | |
1404 | { | |
1405 | unsigned int i,j; | |
1406 | ||
1407 | for(i=0,j=0;i<(length);i++) { | |
1408 | /* mask a nibble at a time and encode */ | |
1409 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1410 | target[j+1] = 'A' + (0x0F & source[i]); | |
1411 | j+=2; | |
1412 | } | |
1413 | ||
1414 | } | |
1415 | ||
1416 | ||
1417 | static int | |
1418 | ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, | |
a10faeb2 | 1419 | char * netbios_name, char * target_name) |
1da177e4 LT |
1420 | { |
1421 | int rc = 0; | |
1422 | int connected = 0; | |
1423 | __be16 orig_port = 0; | |
1424 | ||
1425 | if(*csocket == NULL) { | |
1426 | rc = sock_create_kern(PF_INET, SOCK_STREAM, IPPROTO_TCP, csocket); | |
1427 | if (rc < 0) { | |
1428 | cERROR(1, ("Error %d creating socket",rc)); | |
1429 | *csocket = NULL; | |
1430 | return rc; | |
1431 | } else { | |
1432 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1433 | cFYI(1,("Socket created")); | |
1434 | (*csocket)->sk->sk_allocation = GFP_NOFS; | |
1435 | } | |
1436 | } | |
1437 | ||
1438 | psin_server->sin_family = AF_INET; | |
1439 | if(psin_server->sin_port) { /* user overrode default port */ | |
1440 | rc = (*csocket)->ops->connect(*csocket, | |
1441 | (struct sockaddr *) psin_server, | |
1442 | sizeof (struct sockaddr_in),0); | |
1443 | if (rc >= 0) | |
1444 | connected = 1; | |
1445 | } | |
1446 | ||
1447 | if(!connected) { | |
1448 | /* save original port so we can retry user specified port | |
1449 | later if fall back ports fail this time */ | |
1450 | orig_port = psin_server->sin_port; | |
1451 | ||
1452 | /* do not retry on the same port we just failed on */ | |
1453 | if(psin_server->sin_port != htons(CIFS_PORT)) { | |
1454 | psin_server->sin_port = htons(CIFS_PORT); | |
1455 | ||
1456 | rc = (*csocket)->ops->connect(*csocket, | |
1457 | (struct sockaddr *) psin_server, | |
1458 | sizeof (struct sockaddr_in),0); | |
1459 | if (rc >= 0) | |
1460 | connected = 1; | |
1461 | } | |
1462 | } | |
1463 | if (!connected) { | |
1464 | psin_server->sin_port = htons(RFC1001_PORT); | |
1465 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
1466 | psin_server, sizeof (struct sockaddr_in),0); | |
1467 | if (rc >= 0) | |
1468 | connected = 1; | |
1469 | } | |
1470 | ||
1471 | /* give up here - unless we want to retry on different | |
1472 | protocol families some day */ | |
1473 | if (!connected) { | |
1474 | if(orig_port) | |
1475 | psin_server->sin_port = orig_port; | |
1476 | cFYI(1,("Error %d connecting to server via ipv4",rc)); | |
1477 | sock_release(*csocket); | |
1478 | *csocket = NULL; | |
1479 | return rc; | |
1480 | } | |
1481 | /* Eventually check for other socket options to change from | |
1482 | the default. sock_setsockopt not used because it expects | |
1483 | user space buffer */ | |
b387eaeb SF |
1484 | cFYI(1,("sndbuf %d rcvbuf %d rcvtimeo 0x%lx",(*csocket)->sk->sk_sndbuf, |
1485 | (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo)); | |
1da177e4 | 1486 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; |
b387eaeb SF |
1487 | /* make the bufsizes depend on wsize/rsize and max requests */ |
1488 | if((*csocket)->sk->sk_sndbuf < (200 * 1024)) | |
1489 | (*csocket)->sk->sk_sndbuf = 200 * 1024; | |
1490 | if((*csocket)->sk->sk_rcvbuf < (140 * 1024)) | |
1491 | (*csocket)->sk->sk_rcvbuf = 140 * 1024; | |
1da177e4 LT |
1492 | |
1493 | /* send RFC1001 sessinit */ | |
1da177e4 LT |
1494 | if(psin_server->sin_port == htons(RFC1001_PORT)) { |
1495 | /* some servers require RFC1001 sessinit before sending | |
1496 | negprot - BB check reconnection in case where second | |
1497 | sessinit is sent but no second negprot */ | |
1498 | struct rfc1002_session_packet * ses_init_buf; | |
1499 | struct smb_hdr * smb_buf; | |
e915fc49 | 1500 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), GFP_KERNEL); |
1da177e4 LT |
1501 | if(ses_init_buf) { |
1502 | ses_init_buf->trailer.session_req.called_len = 32; | |
a10faeb2 SF |
1503 | if(target_name && (target_name[0] != 0)) { |
1504 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
1505 | target_name, 16); | |
1506 | } else { | |
1507 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
1508 | DEFAULT_CIFS_CALLED_NAME,16); | |
1509 | } | |
1510 | ||
1da177e4 LT |
1511 | ses_init_buf->trailer.session_req.calling_len = 32; |
1512 | /* calling name ends in null (byte 16) from old smb | |
1513 | convention. */ | |
1514 | if(netbios_name && (netbios_name[0] !=0)) { | |
1515 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
1516 | netbios_name,16); | |
1517 | } else { | |
1518 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
1519 | "LINUX_CIFS_CLNT",16); | |
1520 | } | |
1521 | ses_init_buf->trailer.session_req.scope1 = 0; | |
1522 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1523 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1524 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1525 | smb_buf->smb_buf_length = 0x81000044; | |
1526 | rc = smb_send(*csocket, smb_buf, 0x44, | |
1527 | (struct sockaddr *)psin_server); | |
1528 | kfree(ses_init_buf); | |
083d3a2c SF |
1529 | msleep(1); /* RFC1001 layer in at least one server |
1530 | requires very short break before negprot | |
1531 | presumably because not expecting negprot | |
1532 | to follow so fast. This is a simple | |
1533 | solution that works without | |
1534 | complicating the code and causes no | |
1535 | significant slowing down on mount | |
1536 | for everyone else */ | |
1da177e4 LT |
1537 | } |
1538 | /* else the negprot may still work without this | |
1539 | even though malloc failed */ | |
1540 | ||
1541 | } | |
1542 | ||
1543 | return rc; | |
1544 | } | |
1545 | ||
1546 | static int | |
1547 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket) | |
1548 | { | |
1549 | int rc = 0; | |
1550 | int connected = 0; | |
1551 | __be16 orig_port = 0; | |
1552 | ||
1553 | if(*csocket == NULL) { | |
1554 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, IPPROTO_TCP, csocket); | |
1555 | if (rc < 0) { | |
1556 | cERROR(1, ("Error %d creating ipv6 socket",rc)); | |
1557 | *csocket = NULL; | |
1558 | return rc; | |
1559 | } else { | |
1560 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1561 | cFYI(1,("ipv6 Socket created")); | |
1562 | (*csocket)->sk->sk_allocation = GFP_NOFS; | |
1563 | } | |
1564 | } | |
1565 | ||
1566 | psin_server->sin6_family = AF_INET6; | |
1567 | ||
1568 | if(psin_server->sin6_port) { /* user overrode default port */ | |
1569 | rc = (*csocket)->ops->connect(*csocket, | |
1570 | (struct sockaddr *) psin_server, | |
1571 | sizeof (struct sockaddr_in6),0); | |
1572 | if (rc >= 0) | |
1573 | connected = 1; | |
1574 | } | |
1575 | ||
1576 | if(!connected) { | |
1577 | /* save original port so we can retry user specified port | |
1578 | later if fall back ports fail this time */ | |
1579 | ||
1580 | orig_port = psin_server->sin6_port; | |
1581 | /* do not retry on the same port we just failed on */ | |
1582 | if(psin_server->sin6_port != htons(CIFS_PORT)) { | |
1583 | psin_server->sin6_port = htons(CIFS_PORT); | |
1584 | ||
1585 | rc = (*csocket)->ops->connect(*csocket, | |
1586 | (struct sockaddr *) psin_server, | |
1587 | sizeof (struct sockaddr_in6),0); | |
1588 | if (rc >= 0) | |
1589 | connected = 1; | |
1590 | } | |
1591 | } | |
1592 | if (!connected) { | |
1593 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1594 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
1595 | psin_server, sizeof (struct sockaddr_in6),0); | |
1596 | if (rc >= 0) | |
1597 | connected = 1; | |
1598 | } | |
1599 | ||
1600 | /* give up here - unless we want to retry on different | |
1601 | protocol families some day */ | |
1602 | if (!connected) { | |
1603 | if(orig_port) | |
1604 | psin_server->sin6_port = orig_port; | |
1605 | cFYI(1,("Error %d connecting to server via ipv6",rc)); | |
1606 | sock_release(*csocket); | |
1607 | *csocket = NULL; | |
1608 | return rc; | |
1609 | } | |
1610 | /* Eventually check for other socket options to change from | |
1611 | the default. sock_setsockopt not used because it expects | |
1612 | user space buffer */ | |
1613 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
1614 | ||
1615 | return rc; | |
1616 | } | |
1617 | ||
8af18971 SF |
1618 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo * tcon, |
1619 | struct super_block * sb, struct smb_vol * vol_info) | |
1620 | { | |
1621 | /* if we are reconnecting then should we check to see if | |
1622 | * any requested capabilities changed locally e.g. via | |
1623 | * remount but we can not do much about it here | |
1624 | * if they have (even if we could detect it by the following) | |
1625 | * Perhaps we could add a backpointer to array of sb from tcon | |
1626 | * or if we change to make all sb to same share the same | |
1627 | * sb as NFS - then we only have one backpointer to sb. | |
1628 | * What if we wanted to mount the server share twice once with | |
1629 | * and once without posixacls or posix paths? */ | |
1630 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
1631 | ||
1632 | ||
1633 | if(!CIFSSMBQFSUnixInfo(xid, tcon)) { | |
1634 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
1635 | ||
1636 | /* check for reconnect case in which we do not | |
1637 | want to change the mount behavior if we can avoid it */ | |
1638 | if(vol_info == NULL) { | |
1639 | /* turn off POSIX ACL and PATHNAMES if not set | |
1640 | originally at mount time */ | |
1641 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) | |
1642 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
1643 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) | |
1644 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; | |
1645 | ||
1646 | ||
1647 | ||
1648 | ||
1649 | } | |
1650 | ||
1651 | cap &= CIFS_UNIX_CAP_MASK; | |
75865f8c | 1652 | if (vol_info && vol_info->no_psx_acl) |
8af18971 | 1653 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
75865f8c | 1654 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
8af18971 SF |
1655 | cFYI(1,("negotiated posix acl support")); |
1656 | if(sb) | |
1657 | sb->s_flags |= MS_POSIXACL; | |
1658 | } | |
1659 | ||
75865f8c | 1660 | if (vol_info && vol_info->posix_paths == 0) |
8af18971 | 1661 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
75865f8c | 1662 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
8af18971 | 1663 | cFYI(1,("negotiate posix pathnames")); |
75865f8c | 1664 | if (sb) |
8af18971 SF |
1665 | CIFS_SB(sb)->mnt_cifs_flags |= |
1666 | CIFS_MOUNT_POSIX_PATHS; | |
1667 | } | |
984acfe1 SF |
1668 | |
1669 | /* We might be setting the path sep back to a different | |
1670 | form if we are reconnecting and the server switched its | |
1671 | posix path capability for this share */ | |
75865f8c | 1672 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
984acfe1 | 1673 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
75865f8c SF |
1674 | |
1675 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { | |
1676 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { | |
1677 | CIFS_SB(sb)->rsize = 127 * 1024; | |
1678 | #ifdef CONFIG_CIFS_DEBUG2 | |
1679 | cFYI(1,("larger reads not supported by srv")); | |
1680 | #endif | |
1681 | } | |
1682 | } | |
1683 | ||
984acfe1 | 1684 | |
8af18971 SF |
1685 | cFYI(1,("Negotiate caps 0x%x",(int)cap)); |
1686 | #ifdef CONFIG_CIFS_DEBUG2 | |
75865f8c | 1687 | if (cap & CIFS_UNIX_FCNTL_CAP) |
8af18971 | 1688 | cFYI(1,("FCNTL cap")); |
75865f8c | 1689 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
8af18971 | 1690 | cFYI(1,("EXTATTR cap")); |
75865f8c | 1691 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
8af18971 | 1692 | cFYI(1,("POSIX path cap")); |
75865f8c | 1693 | if (cap & CIFS_UNIX_XATTR_CAP) |
8af18971 | 1694 | cFYI(1,("XATTR cap")); |
75865f8c | 1695 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
8af18971 | 1696 | cFYI(1,("POSIX ACL cap")); |
75865f8c SF |
1697 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
1698 | cFYI(1,("very large read cap")); | |
1699 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) | |
1700 | cFYI(1,("very large write cap")); | |
8af18971 SF |
1701 | #endif /* CIFS_DEBUG2 */ |
1702 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
1703 | cFYI(1,("setting capabilities failed")); | |
1704 | } | |
1705 | } | |
1706 | } | |
1707 | ||
1da177e4 LT |
1708 | int |
1709 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1710 | char *mount_data, const char *devname) | |
1711 | { | |
1712 | int rc = 0; | |
1713 | int xid; | |
1714 | int address_type = AF_INET; | |
1715 | struct socket *csocket = NULL; | |
1716 | struct sockaddr_in sin_server; | |
1717 | struct sockaddr_in6 sin_server6; | |
1718 | struct smb_vol volume_info; | |
1719 | struct cifsSesInfo *pSesInfo = NULL; | |
1720 | struct cifsSesInfo *existingCifsSes = NULL; | |
1721 | struct cifsTconInfo *tcon = NULL; | |
1722 | struct TCP_Server_Info *srvTcp = NULL; | |
1723 | ||
1724 | xid = GetXid(); | |
1725 | ||
1726 | /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ | |
1727 | ||
1728 | memset(&volume_info,0,sizeof(struct smb_vol)); | |
1729 | if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { | |
f99d49ad JJ |
1730 | kfree(volume_info.UNC); |
1731 | kfree(volume_info.password); | |
2fe87f02 | 1732 | kfree(volume_info.prepath); |
1da177e4 LT |
1733 | FreeXid(xid); |
1734 | return -EINVAL; | |
1735 | } | |
1736 | ||
8426c39c JL |
1737 | if (volume_info.nullauth) { |
1738 | cFYI(1,("null user")); | |
1739 | volume_info.username = NULL; | |
1740 | } else if (volume_info.username) { | |
1da177e4 LT |
1741 | /* BB fixme parse for domain name here */ |
1742 | cFYI(1, ("Username: %s ", volume_info.username)); | |
1da177e4 | 1743 | } else { |
bf820679 | 1744 | cifserror("No username specified"); |
1da177e4 LT |
1745 | /* In userspace mount helper we can get user name from alternate |
1746 | locations such as env variables and files on disk */ | |
f99d49ad JJ |
1747 | kfree(volume_info.UNC); |
1748 | kfree(volume_info.password); | |
2fe87f02 | 1749 | kfree(volume_info.prepath); |
1da177e4 LT |
1750 | FreeXid(xid); |
1751 | return -EINVAL; | |
1752 | } | |
1753 | ||
1754 | if (volume_info.UNCip && volume_info.UNC) { | |
1755 | rc = cifs_inet_pton(AF_INET, volume_info.UNCip,&sin_server.sin_addr.s_addr); | |
1756 | ||
1757 | if(rc <= 0) { | |
1758 | /* not ipv4 address, try ipv6 */ | |
1759 | rc = cifs_inet_pton(AF_INET6,volume_info.UNCip,&sin_server6.sin6_addr.in6_u); | |
1760 | if(rc > 0) | |
1761 | address_type = AF_INET6; | |
1762 | } else { | |
1763 | address_type = AF_INET; | |
1764 | } | |
1765 | ||
1766 | if(rc <= 0) { | |
1767 | /* we failed translating address */ | |
f99d49ad JJ |
1768 | kfree(volume_info.UNC); |
1769 | kfree(volume_info.password); | |
2fe87f02 | 1770 | kfree(volume_info.prepath); |
1da177e4 LT |
1771 | FreeXid(xid); |
1772 | return -EINVAL; | |
1773 | } | |
1774 | ||
1775 | cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); | |
1776 | /* success */ | |
1777 | rc = 0; | |
1778 | } else if (volume_info.UNCip){ | |
1779 | /* BB using ip addr as server name connect to the DFS root below */ | |
1780 | cERROR(1,("Connecting to DFS root not implemented yet")); | |
f99d49ad JJ |
1781 | kfree(volume_info.UNC); |
1782 | kfree(volume_info.password); | |
2fe87f02 | 1783 | kfree(volume_info.prepath); |
1da177e4 LT |
1784 | FreeXid(xid); |
1785 | return -EINVAL; | |
1786 | } else /* which servers DFS root would we conect to */ { | |
1787 | cERROR(1, | |
bf820679 | 1788 | ("CIFS mount error: No UNC path (e.g. -o unc=//192.168.1.100/public) specified")); |
f99d49ad JJ |
1789 | kfree(volume_info.UNC); |
1790 | kfree(volume_info.password); | |
2fe87f02 | 1791 | kfree(volume_info.prepath); |
1da177e4 LT |
1792 | FreeXid(xid); |
1793 | return -EINVAL; | |
1794 | } | |
1795 | ||
1796 | /* this is needed for ASCII cp to Unicode converts */ | |
1797 | if(volume_info.iocharset == NULL) { | |
1798 | cifs_sb->local_nls = load_nls_default(); | |
1799 | /* load_nls_default can not return null */ | |
1800 | } else { | |
1801 | cifs_sb->local_nls = load_nls(volume_info.iocharset); | |
1802 | if(cifs_sb->local_nls == NULL) { | |
1803 | cERROR(1,("CIFS mount error: iocharset %s not found",volume_info.iocharset)); | |
f99d49ad JJ |
1804 | kfree(volume_info.UNC); |
1805 | kfree(volume_info.password); | |
2fe87f02 | 1806 | kfree(volume_info.prepath); |
1da177e4 LT |
1807 | FreeXid(xid); |
1808 | return -ELIBACC; | |
1809 | } | |
1810 | } | |
1811 | ||
1812 | if(address_type == AF_INET) | |
1813 | existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr, | |
1814 | NULL /* no ipv6 addr */, | |
1815 | volume_info.username, &srvTcp); | |
5858ae44 SF |
1816 | else if(address_type == AF_INET6) { |
1817 | cFYI(1,("looking for ipv6 address")); | |
1da177e4 LT |
1818 | existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */, |
1819 | &sin_server6.sin6_addr, | |
1820 | volume_info.username, &srvTcp); | |
5858ae44 | 1821 | } else { |
f99d49ad JJ |
1822 | kfree(volume_info.UNC); |
1823 | kfree(volume_info.password); | |
2fe87f02 | 1824 | kfree(volume_info.prepath); |
1da177e4 LT |
1825 | FreeXid(xid); |
1826 | return -EINVAL; | |
1827 | } | |
1828 | ||
1829 | ||
1830 | if (srvTcp) { | |
bf820679 | 1831 | cFYI(1, ("Existing tcp session with server found")); |
1da177e4 | 1832 | } else { /* create socket */ |
4523cc30 | 1833 | if (volume_info.port) |
1da177e4 LT |
1834 | sin_server.sin_port = htons(volume_info.port); |
1835 | else | |
1836 | sin_server.sin_port = 0; | |
5858ae44 SF |
1837 | if (address_type == AF_INET6) { |
1838 | cFYI(1,("attempting ipv6 connect")); | |
1839 | /* BB should we allow ipv6 on port 139? */ | |
1840 | /* other OS never observed in Wild doing 139 with v6 */ | |
1841 | rc = ipv6_connect(&sin_server6,&csocket); | |
1842 | } else | |
1843 | rc = ipv4_connect(&sin_server,&csocket, | |
a10faeb2 SF |
1844 | volume_info.source_rfc1001_name, |
1845 | volume_info.target_rfc1001_name); | |
1da177e4 LT |
1846 | if (rc < 0) { |
1847 | cERROR(1, | |
5858ae44 | 1848 | ("Error connecting to IPv4 socket. Aborting operation")); |
4523cc30 | 1849 | if (csocket != NULL) |
1da177e4 | 1850 | sock_release(csocket); |
f99d49ad JJ |
1851 | kfree(volume_info.UNC); |
1852 | kfree(volume_info.password); | |
2fe87f02 | 1853 | kfree(volume_info.prepath); |
1da177e4 LT |
1854 | FreeXid(xid); |
1855 | return rc; | |
1856 | } | |
1857 | ||
1858 | srvTcp = kmalloc(sizeof (struct TCP_Server_Info), GFP_KERNEL); | |
1859 | if (srvTcp == NULL) { | |
1860 | rc = -ENOMEM; | |
1861 | sock_release(csocket); | |
f99d49ad JJ |
1862 | kfree(volume_info.UNC); |
1863 | kfree(volume_info.password); | |
2fe87f02 | 1864 | kfree(volume_info.prepath); |
1da177e4 LT |
1865 | FreeXid(xid); |
1866 | return rc; | |
1867 | } else { | |
1868 | memset(srvTcp, 0, sizeof (struct TCP_Server_Info)); | |
1869 | memcpy(&srvTcp->addr.sockAddr, &sin_server, sizeof (struct sockaddr_in)); | |
1870 | atomic_set(&srvTcp->inFlight,0); | |
1871 | /* BB Add code for ipv6 case too */ | |
1872 | srvTcp->ssocket = csocket; | |
1873 | srvTcp->protocolType = IPV4; | |
1874 | init_waitqueue_head(&srvTcp->response_q); | |
1875 | init_waitqueue_head(&srvTcp->request_q); | |
1876 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
1877 | /* at this point we are the only ones with the pointer | |
1878 | to the struct since the kernel thread not created yet | |
1879 | so no need to spinlock this init of tcpStatus */ | |
1880 | srvTcp->tcpStatus = CifsNew; | |
1881 | init_MUTEX(&srvTcp->tcpSem); | |
aaf737ad | 1882 | srvTcp->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, srvTcp, "cifsd"); |
4523cc30 | 1883 | if ( IS_ERR(srvTcp->tsk) ) { |
aaf737ad IM |
1884 | rc = PTR_ERR(srvTcp->tsk); |
1885 | cERROR(1,("error %d create cifsd thread", rc)); | |
1886 | srvTcp->tsk = NULL; | |
1da177e4 | 1887 | sock_release(csocket); |
f99d49ad JJ |
1888 | kfree(volume_info.UNC); |
1889 | kfree(volume_info.password); | |
2fe87f02 | 1890 | kfree(volume_info.prepath); |
1da177e4 LT |
1891 | FreeXid(xid); |
1892 | return rc; | |
f191401f SF |
1893 | } |
1894 | wait_for_completion(&cifsd_complete); | |
1895 | rc = 0; | |
1da177e4 | 1896 | memcpy(srvTcp->workstation_RFC1001_name, volume_info.source_rfc1001_name,16); |
a10faeb2 | 1897 | memcpy(srvTcp->server_RFC1001_name, volume_info.target_rfc1001_name,16); |
ad009ac9 | 1898 | srvTcp->sequence_number = 0; |
1da177e4 LT |
1899 | } |
1900 | } | |
1901 | ||
1902 | if (existingCifsSes) { | |
1903 | pSesInfo = existingCifsSes; | |
bf820679 | 1904 | cFYI(1, ("Existing smb sess found")); |
f99d49ad | 1905 | kfree(volume_info.password); |
1da177e4 LT |
1906 | /* volume_info.UNC freed at end of function */ |
1907 | } else if (!rc) { | |
bf820679 | 1908 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 LT |
1909 | pSesInfo = sesInfoAlloc(); |
1910 | if (pSesInfo == NULL) | |
1911 | rc = -ENOMEM; | |
1912 | else { | |
1913 | pSesInfo->server = srvTcp; | |
1914 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
1915 | NIPQUAD(sin_server.sin_addr.s_addr)); | |
1916 | } | |
1917 | ||
1918 | if (!rc){ | |
1919 | /* volume_info.password freed at unmount */ | |
1920 | if (volume_info.password) | |
1921 | pSesInfo->password = volume_info.password; | |
1922 | if (volume_info.username) | |
1923 | strncpy(pSesInfo->userName, | |
1924 | volume_info.username,MAX_USERNAME_SIZE); | |
3979877e SF |
1925 | if (volume_info.domainname) { |
1926 | int len = strlen(volume_info.domainname); | |
1927 | pSesInfo->domainName = | |
1928 | kmalloc(len + 1, GFP_KERNEL); | |
4523cc30 | 1929 | if (pSesInfo->domainName) |
3979877e SF |
1930 | strcpy(pSesInfo->domainName, |
1931 | volume_info.domainname); | |
1932 | } | |
1da177e4 | 1933 | pSesInfo->linux_uid = volume_info.linux_uid; |
750d1151 | 1934 | pSesInfo->overrideSecFlg = volume_info.secFlg; |
1da177e4 | 1935 | down(&pSesInfo->sesSem); |
189acaae | 1936 | /* BB FIXME need to pass vol->secFlgs BB */ |
1da177e4 LT |
1937 | rc = cifs_setup_session(xid,pSesInfo, cifs_sb->local_nls); |
1938 | up(&pSesInfo->sesSem); | |
4523cc30 | 1939 | if (!rc) |
1da177e4 LT |
1940 | atomic_inc(&srvTcp->socketUseCount); |
1941 | } else | |
f99d49ad | 1942 | kfree(volume_info.password); |
1da177e4 LT |
1943 | } |
1944 | ||
1945 | /* search for existing tcon to this server share */ | |
1946 | if (!rc) { | |
4523cc30 | 1947 | if (volume_info.rsize > CIFSMaxBufSize) { |
0ae0efad SF |
1948 | cERROR(1,("rsize %d too large, using MaxBufSize", |
1949 | volume_info.rsize)); | |
1950 | cifs_sb->rsize = CIFSMaxBufSize; | |
75865f8c SF |
1951 | } else if ((volume_info.rsize) && |
1952 | (volume_info.rsize <= CIFSMaxBufSize)) | |
1da177e4 | 1953 | cifs_sb->rsize = volume_info.rsize; |
0ae0efad SF |
1954 | else /* default */ |
1955 | cifs_sb->rsize = CIFSMaxBufSize; | |
1956 | ||
4523cc30 | 1957 | if (volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { |
75865f8c | 1958 | cERROR(1,("wsize %d too large, using 4096 instead", |
0ae0efad SF |
1959 | volume_info.wsize)); |
1960 | cifs_sb->wsize = 4096; | |
4523cc30 | 1961 | } else if (volume_info.wsize) |
1da177e4 LT |
1962 | cifs_sb->wsize = volume_info.wsize; |
1963 | else | |
17cbbafe | 1964 | cifs_sb->wsize = |
1877c9ea SF |
1965 | min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE, |
1966 | 127*1024); | |
17cbbafe SF |
1967 | /* old default of CIFSMaxBufSize was too small now |
1968 | that SMB Write2 can send multiple pages in kvec. | |
1969 | RFC1001 does not describe what happens when frame | |
1970 | bigger than 128K is sent so use that as max in | |
1971 | conjunction with 52K kvec constraint on arch with 4K | |
1972 | page size */ | |
1973 | ||
4523cc30 | 1974 | if (cifs_sb->rsize < 2048) { |
6cec2aed SF |
1975 | cifs_sb->rsize = 2048; |
1976 | /* Windows ME may prefer this */ | |
75865f8c | 1977 | cFYI(1,("readsize set to minimum: 2048")); |
1da177e4 | 1978 | } |
2fe87f02 SF |
1979 | /* calculate prepath */ |
1980 | cifs_sb->prepath = volume_info.prepath; | |
4523cc30 | 1981 | if (cifs_sb->prepath) { |
2fe87f02 SF |
1982 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); |
1983 | cifs_sb->prepath[0] = CIFS_DIR_SEP(cifs_sb); | |
1984 | volume_info.prepath = NULL; | |
1985 | } else | |
1986 | cifs_sb->prepathlen = 0; | |
1da177e4 LT |
1987 | cifs_sb->mnt_uid = volume_info.linux_uid; |
1988 | cifs_sb->mnt_gid = volume_info.linux_gid; | |
1989 | cifs_sb->mnt_file_mode = volume_info.file_mode; | |
1990 | cifs_sb->mnt_dir_mode = volume_info.dir_mode; | |
eeac8047 SF |
1991 | cFYI(1,("file mode: 0x%x dir mode: 0x%x", |
1992 | cifs_sb->mnt_file_mode,cifs_sb->mnt_dir_mode)); | |
1da177e4 | 1993 | |
4523cc30 | 1994 | if (volume_info.noperm) |
1da177e4 | 1995 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; |
4523cc30 | 1996 | if (volume_info.setuids) |
1da177e4 | 1997 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; |
4523cc30 | 1998 | if (volume_info.server_ino) |
1da177e4 | 1999 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; |
4523cc30 | 2000 | if (volume_info.remap) |
6a0b4824 | 2001 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; |
4523cc30 | 2002 | if (volume_info.no_xattr) |
1da177e4 | 2003 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; |
4523cc30 | 2004 | if (volume_info.sfu_emul) |
d7245c2c | 2005 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; |
4523cc30 | 2006 | if (volume_info.nobrl) |
c46fa8ac | 2007 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; |
4523cc30 | 2008 | if (volume_info.cifs_acl) |
0a4b92c0 | 2009 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; |
4523cc30 SF |
2010 | if (volume_info.override_uid) |
2011 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; | |
2012 | if (volume_info.override_gid) | |
2013 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; | |
2014 | if (volume_info.direct_io) { | |
c46fa8ac | 2015 | cFYI(1,("mounting share using direct i/o")); |
1da177e4 LT |
2016 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
2017 | } | |
2018 | ||
2019 | tcon = | |
2020 | find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, | |
2021 | volume_info.username); | |
2022 | if (tcon) { | |
bf820679 | 2023 | cFYI(1, ("Found match on UNC path")); |
1da177e4 LT |
2024 | /* we can have only one retry value for a connection |
2025 | to a share so for resources mounted more than once | |
2026 | to the same server share the last value passed in | |
2027 | for the retry flag is used */ | |
2028 | tcon->retry = volume_info.retry; | |
d3485d37 | 2029 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
2030 | } else { |
2031 | tcon = tconInfoAlloc(); | |
2032 | if (tcon == NULL) | |
2033 | rc = -ENOMEM; | |
2034 | else { | |
8af18971 SF |
2035 | /* check for null share name ie connecting to |
2036 | * dfs root */ | |
1da177e4 | 2037 | |
8af18971 SF |
2038 | /* BB check if this works for exactly length |
2039 | * three strings */ | |
1da177e4 LT |
2040 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) |
2041 | && (strchr(volume_info.UNC + 3, '/') == | |
2042 | NULL)) { | |
737b758c | 2043 | rc = connect_to_dfs_path(xid, pSesInfo, |
8af18971 SF |
2044 | "", cifs_sb->local_nls, |
2045 | cifs_sb->mnt_cifs_flags & | |
2046 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
f99d49ad | 2047 | kfree(volume_info.UNC); |
1da177e4 LT |
2048 | FreeXid(xid); |
2049 | return -ENODEV; | |
2050 | } else { | |
8af18971 SF |
2051 | /* BB Do we need to wrap sesSem around |
2052 | * this TCon call and Unix SetFS as | |
2053 | * we do on SessSetup and reconnect? */ | |
1da177e4 LT |
2054 | rc = CIFSTCon(xid, pSesInfo, |
2055 | volume_info.UNC, | |
2056 | tcon, cifs_sb->local_nls); | |
2057 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
2058 | } | |
2059 | if (!rc) { | |
2060 | atomic_inc(&pSesInfo->inUse); | |
2061 | tcon->retry = volume_info.retry; | |
d3485d37 | 2062 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
2063 | } |
2064 | } | |
2065 | } | |
2066 | } | |
4523cc30 | 2067 | if (pSesInfo) { |
1da177e4 LT |
2068 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
2069 | sb->s_maxbytes = (u64) 1 << 63; | |
2070 | } else | |
2071 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
2072 | } | |
2073 | ||
8af18971 | 2074 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
1da177e4 LT |
2075 | sb->s_time_gran = 100; |
2076 | ||
2077 | /* on error free sesinfo and tcon struct if needed */ | |
2078 | if (rc) { | |
2079 | /* if session setup failed, use count is zero but | |
2080 | we still need to free cifsd thread */ | |
4523cc30 | 2081 | if (atomic_read(&srvTcp->socketUseCount) == 0) { |
1da177e4 LT |
2082 | spin_lock(&GlobalMid_Lock); |
2083 | srvTcp->tcpStatus = CifsExiting; | |
2084 | spin_unlock(&GlobalMid_Lock); | |
4523cc30 | 2085 | if (srvTcp->tsk) { |
28356a16 SF |
2086 | struct task_struct *tsk; |
2087 | /* If we could verify that kthread_stop would | |
2088 | always wake up processes blocked in | |
2089 | tcp in recv_mesg then we could remove the | |
2090 | send_sig call */ | |
5d9c7206 | 2091 | force_sig(SIGKILL,srvTcp->tsk); |
28356a16 SF |
2092 | tsk = srvTcp->tsk; |
2093 | if(tsk) | |
f7f7c31c | 2094 | kthread_stop(tsk); |
f191401f | 2095 | } |
1da177e4 LT |
2096 | } |
2097 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
2098 | if (tcon) /* up accidently freeing someone elses tcon struct */ | |
2099 | tconInfoFree(tcon); | |
2100 | if (existingCifsSes == NULL) { | |
2101 | if (pSesInfo) { | |
2102 | if ((pSesInfo->server) && | |
2103 | (pSesInfo->status == CifsGood)) { | |
2104 | int temp_rc; | |
2105 | temp_rc = CIFSSMBLogoff(xid, pSesInfo); | |
2106 | /* if the socketUseCount is now zero */ | |
4523cc30 | 2107 | if ((temp_rc == -ESHUTDOWN) && |
5d9c7206 J |
2108 | (pSesInfo->server) && |
2109 | (pSesInfo->server->tsk)) { | |
28356a16 | 2110 | struct task_struct *tsk; |
5d9c7206 J |
2111 | force_sig(SIGKILL, |
2112 | pSesInfo->server->tsk); | |
28356a16 | 2113 | tsk = pSesInfo->server->tsk; |
f7f7c31c | 2114 | if (tsk) |
28356a16 | 2115 | kthread_stop(tsk); |
f191401f | 2116 | } |
1da177e4 LT |
2117 | } else |
2118 | cFYI(1, ("No session or bad tcon")); | |
2119 | sesInfoFree(pSesInfo); | |
2120 | /* pSesInfo = NULL; */ | |
2121 | } | |
2122 | } | |
2123 | } else { | |
2124 | atomic_inc(&tcon->useCount); | |
2125 | cifs_sb->tcon = tcon; | |
2126 | tcon->ses = pSesInfo; | |
2127 | ||
82940a46 | 2128 | /* do not care if following two calls succeed - informational */ |
737b758c SF |
2129 | CIFSSMBQFSDeviceInfo(xid, tcon); |
2130 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
8af18971 SF |
2131 | |
2132 | /* tell server which Unix caps we support */ | |
2133 | if (tcon->ses->capabilities & CAP_UNIX) | |
2134 | reset_cifs_unix_caps(xid, tcon, sb, &volume_info); | |
75865f8c SF |
2135 | else if(cifs_sb->rsize > (1024 * 127)) { |
2136 | cifs_sb->rsize = 1024 * 127; | |
2137 | #ifdef CONFIG_CIFS_DEBUG2 | |
2138 | cFYI(1,("no very large read support, rsize 127K")); | |
2139 | #endif | |
2140 | ||
2141 | } | |
3e84469d SF |
2142 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
2143 | cifs_sb->wsize = min(cifs_sb->wsize, | |
2144 | (tcon->ses->server->maxBuf - | |
2145 | MAX_CIFS_HDR_SIZE)); | |
0ae0efad SF |
2146 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
2147 | cifs_sb->rsize = min(cifs_sb->rsize, | |
2148 | (tcon->ses->server->maxBuf - | |
2149 | MAX_CIFS_HDR_SIZE)); | |
1da177e4 LT |
2150 | } |
2151 | ||
2152 | /* volume_info.password is freed above when existing session found | |
2153 | (in which case it is not needed anymore) but when new sesion is created | |
2154 | the password ptr is put in the new session structure (in which case the | |
2155 | password will be freed at unmount time) */ | |
f99d49ad | 2156 | kfree(volume_info.UNC); |
2fe87f02 | 2157 | kfree(volume_info.prepath); |
1da177e4 LT |
2158 | FreeXid(xid); |
2159 | return rc; | |
2160 | } | |
2161 | ||
2162 | static int | |
2163 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 2164 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
2165 | const struct nls_table *nls_codepage) |
2166 | { | |
2167 | struct smb_hdr *smb_buffer; | |
2168 | struct smb_hdr *smb_buffer_response; | |
2169 | SESSION_SETUP_ANDX *pSMB; | |
2170 | SESSION_SETUP_ANDX *pSMBr; | |
2171 | char *bcc_ptr; | |
2172 | char *user; | |
2173 | char *domain; | |
2174 | int rc = 0; | |
2175 | int remaining_words = 0; | |
2176 | int bytes_returned = 0; | |
2177 | int len; | |
2178 | __u32 capabilities; | |
2179 | __u16 count; | |
2180 | ||
eeac8047 | 2181 | cFYI(1, ("In sesssetup")); |
4523cc30 | 2182 | if (ses == NULL) |
1da177e4 LT |
2183 | return -EINVAL; |
2184 | user = ses->userName; | |
2185 | domain = ses->domainName; | |
2186 | smb_buffer = cifs_buf_get(); | |
2187 | if (smb_buffer == NULL) { | |
2188 | return -ENOMEM; | |
2189 | } | |
2190 | smb_buffer_response = smb_buffer; | |
2191 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2192 | ||
2193 | /* send SMBsessionSetup here */ | |
2194 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2195 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2196 | ||
1982c344 | 2197 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2198 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2199 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2200 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2201 | ||
2202 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2203 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2204 | ||
2205 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2206 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2207 | if (ses->capabilities & CAP_UNICODE) { | |
2208 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2209 | capabilities |= CAP_UNICODE; | |
2210 | } | |
2211 | if (ses->capabilities & CAP_STATUS32) { | |
2212 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2213 | capabilities |= CAP_STATUS32; | |
2214 | } | |
2215 | if (ses->capabilities & CAP_DFS) { | |
2216 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2217 | capabilities |= CAP_DFS; | |
2218 | } | |
2219 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2220 | ||
2221 | pSMB->req_no_secext.CaseInsensitivePasswordLength = | |
7c7b25bc | 2222 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2223 | |
2224 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2225 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2226 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2227 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2228 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2229 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2230 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2231 | |
2232 | if (ses->capabilities & CAP_UNICODE) { | |
2233 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2234 | *bcc_ptr = 0; | |
2235 | bcc_ptr++; | |
2236 | } | |
4523cc30 | 2237 | if (user == NULL) |
3979877e | 2238 | bytes_returned = 0; /* skip null user */ |
1da177e4 LT |
2239 | else |
2240 | bytes_returned = | |
e89dc920 | 2241 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2242 | nls_codepage); |
2243 | /* convert number of 16 bit words to bytes */ | |
2244 | bcc_ptr += 2 * bytes_returned; | |
2245 | bcc_ptr += 2; /* trailing null */ | |
2246 | if (domain == NULL) | |
2247 | bytes_returned = | |
e89dc920 | 2248 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2249 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2250 | else | |
2251 | bytes_returned = | |
e89dc920 | 2252 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2253 | nls_codepage); |
2254 | bcc_ptr += 2 * bytes_returned; | |
2255 | bcc_ptr += 2; | |
2256 | bytes_returned = | |
e89dc920 | 2257 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2258 | 32, nls_codepage); |
2259 | bcc_ptr += 2 * bytes_returned; | |
2260 | bytes_returned = | |
e9ff3990 | 2261 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, |
1da177e4 LT |
2262 | 32, nls_codepage); |
2263 | bcc_ptr += 2 * bytes_returned; | |
2264 | bcc_ptr += 2; | |
2265 | bytes_returned = | |
e89dc920 | 2266 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2267 | 64, nls_codepage); |
2268 | bcc_ptr += 2 * bytes_returned; | |
2269 | bcc_ptr += 2; | |
2270 | } else { | |
4523cc30 | 2271 | if (user != NULL) { |
1da177e4 LT |
2272 | strncpy(bcc_ptr, user, 200); |
2273 | bcc_ptr += strnlen(user, 200); | |
2274 | } | |
2275 | *bcc_ptr = 0; | |
2276 | bcc_ptr++; | |
2277 | if (domain == NULL) { | |
2278 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2279 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2280 | } else { | |
2281 | strncpy(bcc_ptr, domain, 64); | |
2282 | bcc_ptr += strnlen(domain, 64); | |
2283 | *bcc_ptr = 0; | |
2284 | bcc_ptr++; | |
2285 | } | |
2286 | strcpy(bcc_ptr, "Linux version "); | |
2287 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2288 | strcpy(bcc_ptr, utsname()->release); |
2289 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2290 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2291 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2292 | } | |
2293 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2294 | smb_buffer->smb_buf_length += count; | |
2295 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2296 | ||
2297 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2298 | &bytes_returned, 1); | |
2299 | if (rc) { | |
2300 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2301 | } else if ((smb_buffer_response->WordCount == 3) | |
2302 | || (smb_buffer_response->WordCount == 4)) { | |
2303 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2304 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2305 | if (action & GUEST_LOGIN) | |
2306 | cFYI(1, (" Guest login")); /* do we want to mark SesInfo struct ? */ | |
2307 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format (le) */ | |
2308 | cFYI(1, ("UID = %d ", ses->Suid)); | |
2309 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2310 | bcc_ptr = pByteArea(smb_buffer_response); | |
2311 | if ((pSMBr->resp.hdr.WordCount == 3) | |
2312 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2313 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2314 | if (pSMBr->resp.hdr.WordCount == 4) | |
2315 | bcc_ptr += blob_len; | |
2316 | ||
2317 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2318 | if ((long) (bcc_ptr) % 2) { | |
2319 | remaining_words = | |
2320 | (BCC(smb_buffer_response) - 1) /2; | |
2321 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2322 | } else { | |
2323 | remaining_words = | |
2324 | BCC(smb_buffer_response) / 2; | |
2325 | } | |
2326 | len = | |
2327 | UniStrnlen((wchar_t *) bcc_ptr, | |
2328 | remaining_words - 1); | |
2329 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2330 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2331 | terminating last Unicode string in response */ | |
a424f8bf SF |
2332 | if(ses->serverOS) |
2333 | kfree(ses->serverOS); | |
e915fc49 | 2334 | ses->serverOS = kzalloc(2 * (len + 1), GFP_KERNEL); |
433dc24f SF |
2335 | if(ses->serverOS == NULL) |
2336 | goto sesssetup_nomem; | |
1da177e4 | 2337 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2338 | (__le16 *)bcc_ptr, len,nls_codepage); |
1da177e4 LT |
2339 | bcc_ptr += 2 * (len + 1); |
2340 | remaining_words -= len + 1; | |
2341 | ses->serverOS[2 * len] = 0; | |
2342 | ses->serverOS[1 + (2 * len)] = 0; | |
2343 | if (remaining_words > 0) { | |
2344 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2345 | remaining_words-1); | |
cd49b492 | 2346 | kfree(ses->serverNOS); |
e915fc49 | 2347 | ses->serverNOS = kzalloc(2 * (len + 1),GFP_KERNEL); |
433dc24f SF |
2348 | if(ses->serverNOS == NULL) |
2349 | goto sesssetup_nomem; | |
1da177e4 | 2350 | cifs_strfromUCS_le(ses->serverNOS, |
e89dc920 | 2351 | (__le16 *)bcc_ptr,len,nls_codepage); |
1da177e4 LT |
2352 | bcc_ptr += 2 * (len + 1); |
2353 | ses->serverNOS[2 * len] = 0; | |
2354 | ses->serverNOS[1 + (2 * len)] = 0; | |
2355 | if(strncmp(ses->serverNOS, | |
2356 | "NT LAN Manager 4",16) == 0) { | |
2357 | cFYI(1,("NT4 server")); | |
2358 | ses->flags |= CIFS_SES_NT4; | |
2359 | } | |
2360 | remaining_words -= len + 1; | |
2361 | if (remaining_words > 0) { | |
433dc24f | 2362 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 2363 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ |
a424f8bf SF |
2364 | if(ses->serverDomain) |
2365 | kfree(ses->serverDomain); | |
1da177e4 | 2366 | ses->serverDomain = |
e915fc49 | 2367 | kzalloc(2*(len+1),GFP_KERNEL); |
433dc24f SF |
2368 | if(ses->serverDomain == NULL) |
2369 | goto sesssetup_nomem; | |
1da177e4 | 2370 | cifs_strfromUCS_le(ses->serverDomain, |
e89dc920 | 2371 | (__le16 *)bcc_ptr,len,nls_codepage); |
1da177e4 LT |
2372 | bcc_ptr += 2 * (len + 1); |
2373 | ses->serverDomain[2*len] = 0; | |
2374 | ses->serverDomain[1+(2*len)] = 0; | |
2375 | } /* else no more room so create dummy domain string */ | |
a424f8bf SF |
2376 | else { |
2377 | if(ses->serverDomain) | |
2378 | kfree(ses->serverDomain); | |
433dc24f | 2379 | ses->serverDomain = |
e915fc49 | 2380 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2381 | } |
1da177e4 | 2382 | } else { /* no room so create dummy domain and NOS string */ |
433dc24f SF |
2383 | /* if these kcallocs fail not much we |
2384 | can do, but better to not fail the | |
2385 | sesssetup itself */ | |
cd49b492 | 2386 | kfree(ses->serverDomain); |
1da177e4 | 2387 | ses->serverDomain = |
e915fc49 | 2388 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2389 | kfree(ses->serverNOS); |
1da177e4 | 2390 | ses->serverNOS = |
e915fc49 | 2391 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2392 | } |
2393 | } else { /* ASCII */ | |
2394 | len = strnlen(bcc_ptr, 1024); | |
2395 | if (((long) bcc_ptr + len) - (long) | |
2396 | pByteArea(smb_buffer_response) | |
2397 | <= BCC(smb_buffer_response)) { | |
cd49b492 | 2398 | kfree(ses->serverOS); |
e915fc49 | 2399 | ses->serverOS = kzalloc(len + 1,GFP_KERNEL); |
433dc24f SF |
2400 | if(ses->serverOS == NULL) |
2401 | goto sesssetup_nomem; | |
1da177e4 LT |
2402 | strncpy(ses->serverOS,bcc_ptr, len); |
2403 | ||
2404 | bcc_ptr += len; | |
2405 | bcc_ptr[0] = 0; /* null terminate the string */ | |
2406 | bcc_ptr++; | |
2407 | ||
2408 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2409 | kfree(ses->serverNOS); |
e915fc49 | 2410 | ses->serverNOS = kzalloc(len + 1,GFP_KERNEL); |
433dc24f SF |
2411 | if(ses->serverNOS == NULL) |
2412 | goto sesssetup_nomem; | |
1da177e4 LT |
2413 | strncpy(ses->serverNOS, bcc_ptr, len); |
2414 | bcc_ptr += len; | |
2415 | bcc_ptr[0] = 0; | |
2416 | bcc_ptr++; | |
2417 | ||
2418 | len = strnlen(bcc_ptr, 1024); | |
a424f8bf SF |
2419 | if(ses->serverDomain) |
2420 | kfree(ses->serverDomain); | |
e915fc49 | 2421 | ses->serverDomain = kzalloc(len + 1,GFP_KERNEL); |
433dc24f SF |
2422 | if(ses->serverDomain == NULL) |
2423 | goto sesssetup_nomem; | |
1da177e4 LT |
2424 | strncpy(ses->serverDomain, bcc_ptr, len); |
2425 | bcc_ptr += len; | |
2426 | bcc_ptr[0] = 0; | |
2427 | bcc_ptr++; | |
2428 | } else | |
2429 | cFYI(1, | |
2430 | ("Variable field of length %d extends beyond end of smb ", | |
2431 | len)); | |
2432 | } | |
2433 | } else { | |
2434 | cERROR(1, | |
2435 | (" Security Blob Length extends beyond end of SMB")); | |
2436 | } | |
2437 | } else { | |
2438 | cERROR(1, | |
2439 | (" Invalid Word count %d: ", | |
2440 | smb_buffer_response->WordCount)); | |
2441 | rc = -EIO; | |
2442 | } | |
433dc24f SF |
2443 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2444 | since that could make reconnection harder, and | |
2445 | reconnection might be needed to free memory */ | |
1da177e4 LT |
2446 | if (smb_buffer) |
2447 | cifs_buf_release(smb_buffer); | |
2448 | ||
2449 | return rc; | |
2450 | } | |
2451 | ||
1da177e4 LT |
2452 | static int |
2453 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
2454 | struct cifsSesInfo *ses, int * pNTLMv2_flag, | |
2455 | const struct nls_table *nls_codepage) | |
2456 | { | |
2457 | struct smb_hdr *smb_buffer; | |
2458 | struct smb_hdr *smb_buffer_response; | |
2459 | SESSION_SETUP_ANDX *pSMB; | |
2460 | SESSION_SETUP_ANDX *pSMBr; | |
2461 | char *bcc_ptr; | |
2462 | char *domain; | |
2463 | int rc = 0; | |
2464 | int remaining_words = 0; | |
2465 | int bytes_returned = 0; | |
2466 | int len; | |
2467 | int SecurityBlobLength = sizeof (NEGOTIATE_MESSAGE); | |
2468 | PNEGOTIATE_MESSAGE SecurityBlob; | |
2469 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2470 | __u32 negotiate_flags, capabilities; | |
2471 | __u16 count; | |
2472 | ||
12b3b8ff | 2473 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
1da177e4 LT |
2474 | if(ses == NULL) |
2475 | return -EINVAL; | |
2476 | domain = ses->domainName; | |
2477 | *pNTLMv2_flag = FALSE; | |
2478 | smb_buffer = cifs_buf_get(); | |
2479 | if (smb_buffer == NULL) { | |
2480 | return -ENOMEM; | |
2481 | } | |
2482 | smb_buffer_response = smb_buffer; | |
2483 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2484 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2485 | ||
2486 | /* send SMBsessionSetup here */ | |
2487 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2488 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2489 | |
2490 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2491 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2492 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2493 | ||
2494 | pSMB->req.AndXCommand = 0xFF; | |
2495 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2496 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2497 | ||
2498 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2499 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2500 | ||
2501 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2502 | CAP_EXTENDED_SECURITY; | |
2503 | if (ses->capabilities & CAP_UNICODE) { | |
2504 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2505 | capabilities |= CAP_UNICODE; | |
2506 | } | |
2507 | if (ses->capabilities & CAP_STATUS32) { | |
2508 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2509 | capabilities |= CAP_STATUS32; | |
2510 | } | |
2511 | if (ses->capabilities & CAP_DFS) { | |
2512 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2513 | capabilities |= CAP_DFS; | |
2514 | } | |
2515 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2516 | ||
2517 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2518 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2519 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2520 | SecurityBlob->MessageType = NtLmNegotiate; | |
2521 | negotiate_flags = | |
2522 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2523 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2524 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 LT |
2525 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
2526 | if(sign_CIFS_PDUs) | |
2527 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; | |
3979877e SF |
2528 | /* if(ntlmv2_support) |
2529 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ | |
1da177e4 LT |
2530 | /* setup pointers to domain name and workstation name */ |
2531 | bcc_ptr += SecurityBlobLength; | |
2532 | ||
2533 | SecurityBlob->WorkstationName.Buffer = 0; | |
2534 | SecurityBlob->WorkstationName.Length = 0; | |
2535 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2536 | ||
12b3b8ff SF |
2537 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2538 | along with username on auth request (ie the response to challenge) */ | |
2539 | SecurityBlob->DomainName.Buffer = 0; | |
2540 | SecurityBlob->DomainName.Length = 0; | |
2541 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2542 | if (ses->capabilities & CAP_UNICODE) { |
2543 | if ((long) bcc_ptr % 2) { | |
2544 | *bcc_ptr = 0; | |
2545 | bcc_ptr++; | |
2546 | } | |
2547 | ||
2548 | bytes_returned = | |
e89dc920 | 2549 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2550 | 32, nls_codepage); |
2551 | bcc_ptr += 2 * bytes_returned; | |
2552 | bytes_returned = | |
e9ff3990 | 2553 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2554 | nls_codepage); |
2555 | bcc_ptr += 2 * bytes_returned; | |
2556 | bcc_ptr += 2; /* null terminate Linux version */ | |
2557 | bytes_returned = | |
e89dc920 | 2558 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2559 | 64, nls_codepage); |
2560 | bcc_ptr += 2 * bytes_returned; | |
2561 | *(bcc_ptr + 1) = 0; | |
2562 | *(bcc_ptr + 2) = 0; | |
2563 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2564 | *(bcc_ptr + 1) = 0; | |
2565 | *(bcc_ptr + 2) = 0; | |
2566 | bcc_ptr += 2; /* null domain */ | |
2567 | } else { /* ASCII */ | |
2568 | strcpy(bcc_ptr, "Linux version "); | |
2569 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2570 | strcpy(bcc_ptr, utsname()->release); |
2571 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2572 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2573 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2574 | bcc_ptr++; /* empty domain field */ | |
2575 | *bcc_ptr = 0; | |
2576 | } | |
2577 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2578 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2579 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2580 | smb_buffer->smb_buf_length += count; | |
2581 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2582 | ||
2583 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2584 | &bytes_returned, 1); | |
2585 | ||
2586 | if (smb_buffer_response->Status.CifsError == | |
2587 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2588 | rc = 0; | |
2589 | ||
2590 | if (rc) { | |
2591 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2592 | } else if ((smb_buffer_response->WordCount == 3) | |
2593 | || (smb_buffer_response->WordCount == 4)) { | |
2594 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2595 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2596 | ||
2597 | if (action & GUEST_LOGIN) | |
2598 | cFYI(1, (" Guest login")); | |
2599 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
2600 | ||
2601 | bcc_ptr = pByteArea(smb_buffer_response); | |
2602 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2603 | ||
2604 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2605 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2606 | cFYI(1, | |
2607 | ("Unexpected NTLMSSP message type received %d", | |
2608 | SecurityBlob2->MessageType)); | |
2609 | } else if (ses) { | |
2610 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ | |
12b3b8ff | 2611 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2612 | if ((pSMBr->resp.hdr.WordCount == 3) |
2613 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2614 | && (blob_len < | |
2615 | pSMBr->resp.ByteCount))) { | |
2616 | ||
2617 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2618 | bcc_ptr += blob_len; | |
12b3b8ff | 2619 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2620 | blob_len)); |
2621 | } | |
2622 | ||
12b3b8ff | 2623 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2624 | |
2625 | memcpy(ses->server->cryptKey, | |
2626 | SecurityBlob2->Challenge, | |
2627 | CIFS_CRYPTO_KEY_SIZE); | |
12b3b8ff SF |
2628 | if(SecurityBlob2->NegotiateFlags & |
2629 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) | |
1da177e4 LT |
2630 | *pNTLMv2_flag = TRUE; |
2631 | ||
2632 | if((SecurityBlob2->NegotiateFlags & | |
2633 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
2634 | || (sign_CIFS_PDUs > 1)) | |
2635 | ses->server->secMode |= | |
2636 | SECMODE_SIGN_REQUIRED; | |
2637 | if ((SecurityBlob2->NegotiateFlags & | |
2638 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) | |
2639 | ses->server->secMode |= | |
2640 | SECMODE_SIGN_ENABLED; | |
2641 | ||
2642 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2643 | if ((long) (bcc_ptr) % 2) { | |
2644 | remaining_words = | |
2645 | (BCC(smb_buffer_response) | |
2646 | - 1) / 2; | |
2647 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2648 | } else { | |
2649 | remaining_words = | |
2650 | BCC | |
2651 | (smb_buffer_response) / 2; | |
2652 | } | |
2653 | len = | |
2654 | UniStrnlen((wchar_t *) bcc_ptr, | |
2655 | remaining_words - 1); | |
2656 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2657 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2658 | terminating last Unicode string in response */ | |
a424f8bf SF |
2659 | if(ses->serverOS) |
2660 | kfree(ses->serverOS); | |
1da177e4 | 2661 | ses->serverOS = |
e915fc49 | 2662 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2663 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2664 | (__le16 *) |
1da177e4 LT |
2665 | bcc_ptr, len, |
2666 | nls_codepage); | |
2667 | bcc_ptr += 2 * (len + 1); | |
2668 | remaining_words -= len + 1; | |
2669 | ses->serverOS[2 * len] = 0; | |
2670 | ses->serverOS[1 + (2 * len)] = 0; | |
2671 | if (remaining_words > 0) { | |
2672 | len = UniStrnlen((wchar_t *) | |
2673 | bcc_ptr, | |
2674 | remaining_words | |
2675 | - 1); | |
cd49b492 | 2676 | kfree(ses->serverNOS); |
1da177e4 | 2677 | ses->serverNOS = |
e915fc49 | 2678 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2679 | GFP_KERNEL); |
2680 | cifs_strfromUCS_le(ses-> | |
2681 | serverNOS, | |
e89dc920 | 2682 | (__le16 *) |
1da177e4 LT |
2683 | bcc_ptr, |
2684 | len, | |
2685 | nls_codepage); | |
2686 | bcc_ptr += 2 * (len + 1); | |
2687 | ses->serverNOS[2 * len] = 0; | |
2688 | ses->serverNOS[1 + | |
2689 | (2 * len)] = 0; | |
2690 | remaining_words -= len + 1; | |
2691 | if (remaining_words > 0) { | |
2692 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
2693 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ | |
cd49b492 | 2694 | kfree(ses->serverDomain); |
1da177e4 | 2695 | ses->serverDomain = |
e915fc49 | 2696 | kzalloc(2 * |
1da177e4 LT |
2697 | (len + |
2698 | 1), | |
2699 | GFP_KERNEL); | |
2700 | cifs_strfromUCS_le | |
e89dc920 SF |
2701 | (ses->serverDomain, |
2702 | (__le16 *)bcc_ptr, | |
2703 | len, nls_codepage); | |
1da177e4 LT |
2704 | bcc_ptr += |
2705 | 2 * (len + 1); | |
e89dc920 | 2706 | ses->serverDomain[2*len] |
1da177e4 | 2707 | = 0; |
e89dc920 SF |
2708 | ses->serverDomain |
2709 | [1 + (2 * len)] | |
1da177e4 LT |
2710 | = 0; |
2711 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 2712 | else { |
cd49b492 | 2713 | kfree(ses->serverDomain); |
1da177e4 | 2714 | ses->serverDomain = |
e915fc49 | 2715 | kzalloc(2, |
1da177e4 | 2716 | GFP_KERNEL); |
a424f8bf | 2717 | } |
1da177e4 | 2718 | } else { /* no room so create dummy domain and NOS string */ |
cd49b492 | 2719 | kfree(ses->serverDomain); |
1da177e4 | 2720 | ses->serverDomain = |
e915fc49 | 2721 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2722 | kfree(ses->serverNOS); |
1da177e4 | 2723 | ses->serverNOS = |
e915fc49 | 2724 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2725 | } |
2726 | } else { /* ASCII */ | |
2727 | len = strnlen(bcc_ptr, 1024); | |
2728 | if (((long) bcc_ptr + len) - (long) | |
2729 | pByteArea(smb_buffer_response) | |
2730 | <= BCC(smb_buffer_response)) { | |
a424f8bf SF |
2731 | if(ses->serverOS) |
2732 | kfree(ses->serverOS); | |
1da177e4 | 2733 | ses->serverOS = |
e915fc49 | 2734 | kzalloc(len + 1, |
1da177e4 LT |
2735 | GFP_KERNEL); |
2736 | strncpy(ses->serverOS, | |
2737 | bcc_ptr, len); | |
2738 | ||
2739 | bcc_ptr += len; | |
2740 | bcc_ptr[0] = 0; /* null terminate string */ | |
2741 | bcc_ptr++; | |
2742 | ||
2743 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2744 | kfree(ses->serverNOS); |
1da177e4 | 2745 | ses->serverNOS = |
e915fc49 | 2746 | kzalloc(len + 1, |
1da177e4 LT |
2747 | GFP_KERNEL); |
2748 | strncpy(ses->serverNOS, bcc_ptr, len); | |
2749 | bcc_ptr += len; | |
2750 | bcc_ptr[0] = 0; | |
2751 | bcc_ptr++; | |
2752 | ||
2753 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2754 | kfree(ses->serverDomain); |
1da177e4 | 2755 | ses->serverDomain = |
e915fc49 | 2756 | kzalloc(len + 1, |
1da177e4 LT |
2757 | GFP_KERNEL); |
2758 | strncpy(ses->serverDomain, bcc_ptr, len); | |
2759 | bcc_ptr += len; | |
2760 | bcc_ptr[0] = 0; | |
2761 | bcc_ptr++; | |
2762 | } else | |
2763 | cFYI(1, | |
12b3b8ff | 2764 | ("Variable field of length %d extends beyond end of smb", |
1da177e4 LT |
2765 | len)); |
2766 | } | |
2767 | } else { | |
2768 | cERROR(1, | |
2769 | (" Security Blob Length extends beyond end of SMB")); | |
2770 | } | |
2771 | } else { | |
2772 | cERROR(1, ("No session structure passed in.")); | |
2773 | } | |
2774 | } else { | |
2775 | cERROR(1, | |
5815449d | 2776 | (" Invalid Word count %d:", |
1da177e4 LT |
2777 | smb_buffer_response->WordCount)); |
2778 | rc = -EIO; | |
2779 | } | |
2780 | ||
2781 | if (smb_buffer) | |
2782 | cifs_buf_release(smb_buffer); | |
2783 | ||
2784 | return rc; | |
2785 | } | |
2786 | static int | |
2787 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
2788 | char *ntlm_session_key, int ntlmv2_flag, | |
2789 | const struct nls_table *nls_codepage) | |
2790 | { | |
2791 | struct smb_hdr *smb_buffer; | |
2792 | struct smb_hdr *smb_buffer_response; | |
2793 | SESSION_SETUP_ANDX *pSMB; | |
2794 | SESSION_SETUP_ANDX *pSMBr; | |
2795 | char *bcc_ptr; | |
2796 | char *user; | |
2797 | char *domain; | |
2798 | int rc = 0; | |
2799 | int remaining_words = 0; | |
2800 | int bytes_returned = 0; | |
2801 | int len; | |
2802 | int SecurityBlobLength = sizeof (AUTHENTICATE_MESSAGE); | |
2803 | PAUTHENTICATE_MESSAGE SecurityBlob; | |
2804 | __u32 negotiate_flags, capabilities; | |
2805 | __u16 count; | |
2806 | ||
2807 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
2808 | if(ses == NULL) | |
2809 | return -EINVAL; | |
2810 | user = ses->userName; | |
2811 | domain = ses->domainName; | |
2812 | smb_buffer = cifs_buf_get(); | |
2813 | if (smb_buffer == NULL) { | |
2814 | return -ENOMEM; | |
2815 | } | |
2816 | smb_buffer_response = smb_buffer; | |
2817 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2818 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2819 | ||
2820 | /* send SMBsessionSetup here */ | |
2821 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2822 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2823 | |
2824 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2825 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
2826 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2827 | pSMB->req.AndXCommand = 0xFF; | |
2828 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2829 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2830 | ||
2831 | pSMB->req.hdr.Uid = ses->Suid; | |
2832 | ||
2833 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2834 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2835 | ||
2836 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2837 | CAP_EXTENDED_SECURITY; | |
2838 | if (ses->capabilities & CAP_UNICODE) { | |
2839 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2840 | capabilities |= CAP_UNICODE; | |
2841 | } | |
2842 | if (ses->capabilities & CAP_STATUS32) { | |
2843 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2844 | capabilities |= CAP_STATUS32; | |
2845 | } | |
2846 | if (ses->capabilities & CAP_DFS) { | |
2847 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2848 | capabilities |= CAP_DFS; | |
2849 | } | |
2850 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2851 | ||
2852 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2853 | SecurityBlob = (PAUTHENTICATE_MESSAGE) bcc_ptr; | |
2854 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2855 | SecurityBlob->MessageType = NtLmAuthenticate; | |
2856 | bcc_ptr += SecurityBlobLength; | |
2857 | negotiate_flags = | |
2858 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | | |
2859 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
2860 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
2861 | if(sign_CIFS_PDUs) | |
2862 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; | |
2863 | if(ntlmv2_flag) | |
2864 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; | |
2865 | ||
2866 | /* setup pointers to domain name and workstation name */ | |
2867 | ||
2868 | SecurityBlob->WorkstationName.Buffer = 0; | |
2869 | SecurityBlob->WorkstationName.Length = 0; | |
2870 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2871 | SecurityBlob->SessionKey.Length = 0; | |
2872 | SecurityBlob->SessionKey.MaximumLength = 0; | |
2873 | SecurityBlob->SessionKey.Buffer = 0; | |
2874 | ||
2875 | SecurityBlob->LmChallengeResponse.Length = 0; | |
2876 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
2877 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
2878 | ||
2879 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 2880 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2881 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
2882 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
2883 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
2884 | SecurityBlob->NtChallengeResponse.Buffer = |
2885 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
2886 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
2887 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2888 | |
2889 | if (ses->capabilities & CAP_UNICODE) { | |
2890 | if (domain == NULL) { | |
2891 | SecurityBlob->DomainName.Buffer = 0; | |
2892 | SecurityBlob->DomainName.Length = 0; | |
2893 | SecurityBlob->DomainName.MaximumLength = 0; | |
2894 | } else { | |
2895 | __u16 len = | |
e89dc920 | 2896 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2897 | nls_codepage); |
2898 | len *= 2; | |
2899 | SecurityBlob->DomainName.MaximumLength = | |
2900 | cpu_to_le16(len); | |
2901 | SecurityBlob->DomainName.Buffer = | |
2902 | cpu_to_le32(SecurityBlobLength); | |
2903 | bcc_ptr += len; | |
2904 | SecurityBlobLength += len; | |
2905 | SecurityBlob->DomainName.Length = | |
2906 | cpu_to_le16(len); | |
2907 | } | |
2908 | if (user == NULL) { | |
2909 | SecurityBlob->UserName.Buffer = 0; | |
2910 | SecurityBlob->UserName.Length = 0; | |
2911 | SecurityBlob->UserName.MaximumLength = 0; | |
2912 | } else { | |
2913 | __u16 len = | |
e89dc920 | 2914 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 LT |
2915 | nls_codepage); |
2916 | len *= 2; | |
2917 | SecurityBlob->UserName.MaximumLength = | |
2918 | cpu_to_le16(len); | |
2919 | SecurityBlob->UserName.Buffer = | |
2920 | cpu_to_le32(SecurityBlobLength); | |
2921 | bcc_ptr += len; | |
2922 | SecurityBlobLength += len; | |
2923 | SecurityBlob->UserName.Length = | |
2924 | cpu_to_le16(len); | |
2925 | } | |
2926 | ||
e89dc920 | 2927 | /* SecurityBlob->WorkstationName.Length = cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); |
1da177e4 LT |
2928 | SecurityBlob->WorkstationName.Length *= 2; |
2929 | SecurityBlob->WorkstationName.MaximumLength = cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
2930 | SecurityBlob->WorkstationName.Buffer = cpu_to_le32(SecurityBlobLength); | |
2931 | bcc_ptr += SecurityBlob->WorkstationName.Length; | |
2932 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
2933 | SecurityBlob->WorkstationName.Length = cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
2934 | ||
2935 | if ((long) bcc_ptr % 2) { | |
2936 | *bcc_ptr = 0; | |
2937 | bcc_ptr++; | |
2938 | } | |
2939 | bytes_returned = | |
e89dc920 | 2940 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2941 | 32, nls_codepage); |
2942 | bcc_ptr += 2 * bytes_returned; | |
2943 | bytes_returned = | |
e9ff3990 | 2944 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2945 | nls_codepage); |
2946 | bcc_ptr += 2 * bytes_returned; | |
2947 | bcc_ptr += 2; /* null term version string */ | |
2948 | bytes_returned = | |
e89dc920 | 2949 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2950 | 64, nls_codepage); |
2951 | bcc_ptr += 2 * bytes_returned; | |
2952 | *(bcc_ptr + 1) = 0; | |
2953 | *(bcc_ptr + 2) = 0; | |
2954 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2955 | *(bcc_ptr + 1) = 0; | |
2956 | *(bcc_ptr + 2) = 0; | |
2957 | bcc_ptr += 2; /* null domain */ | |
2958 | } else { /* ASCII */ | |
2959 | if (domain == NULL) { | |
2960 | SecurityBlob->DomainName.Buffer = 0; | |
2961 | SecurityBlob->DomainName.Length = 0; | |
2962 | SecurityBlob->DomainName.MaximumLength = 0; | |
2963 | } else { | |
2964 | __u16 len; | |
2965 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; | |
2966 | strncpy(bcc_ptr, domain, 63); | |
2967 | len = strnlen(domain, 64); | |
2968 | SecurityBlob->DomainName.MaximumLength = | |
2969 | cpu_to_le16(len); | |
2970 | SecurityBlob->DomainName.Buffer = | |
2971 | cpu_to_le32(SecurityBlobLength); | |
2972 | bcc_ptr += len; | |
2973 | SecurityBlobLength += len; | |
2974 | SecurityBlob->DomainName.Length = cpu_to_le16(len); | |
2975 | } | |
2976 | if (user == NULL) { | |
2977 | SecurityBlob->UserName.Buffer = 0; | |
2978 | SecurityBlob->UserName.Length = 0; | |
2979 | SecurityBlob->UserName.MaximumLength = 0; | |
2980 | } else { | |
2981 | __u16 len; | |
2982 | strncpy(bcc_ptr, user, 63); | |
2983 | len = strnlen(user, 64); | |
2984 | SecurityBlob->UserName.MaximumLength = | |
2985 | cpu_to_le16(len); | |
2986 | SecurityBlob->UserName.Buffer = | |
2987 | cpu_to_le32(SecurityBlobLength); | |
2988 | bcc_ptr += len; | |
2989 | SecurityBlobLength += len; | |
2990 | SecurityBlob->UserName.Length = cpu_to_le16(len); | |
2991 | } | |
2992 | /* BB fill in our workstation name if known BB */ | |
2993 | ||
2994 | strcpy(bcc_ptr, "Linux version "); | |
2995 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2996 | strcpy(bcc_ptr, utsname()->release); |
2997 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2998 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2999 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
3000 | bcc_ptr++; /* null domain */ | |
3001 | *bcc_ptr = 0; | |
3002 | } | |
3003 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
3004 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
3005 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
3006 | smb_buffer->smb_buf_length += count; | |
3007 | pSMB->req.ByteCount = cpu_to_le16(count); | |
3008 | ||
3009 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
3010 | &bytes_returned, 1); | |
3011 | if (rc) { | |
3012 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
3013 | } else if ((smb_buffer_response->WordCount == 3) | |
3014 | || (smb_buffer_response->WordCount == 4)) { | |
3015 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
3016 | __u16 blob_len = | |
3017 | le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
3018 | if (action & GUEST_LOGIN) | |
3019 | cFYI(1, (" Guest login")); /* BB do we want to set anything in SesInfo struct ? */ | |
3020 | /* if(SecurityBlob2->MessageType != NtLm??){ | |
3021 | cFYI("Unexpected message type on auth response is %d ")); | |
3022 | } */ | |
3023 | if (ses) { | |
3024 | cFYI(1, | |
3025 | ("Does UID on challenge %d match auth response UID %d ", | |
3026 | ses->Suid, smb_buffer_response->Uid)); | |
3027 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format */ | |
3028 | bcc_ptr = pByteArea(smb_buffer_response); | |
3029 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
3030 | if ((pSMBr->resp.hdr.WordCount == 3) | |
3031 | || ((pSMBr->resp.hdr.WordCount == 4) | |
3032 | && (blob_len < | |
3033 | pSMBr->resp.ByteCount))) { | |
3034 | if (pSMBr->resp.hdr.WordCount == 4) { | |
3035 | bcc_ptr += | |
3036 | blob_len; | |
3037 | cFYI(1, | |
3038 | ("Security Blob Length %d ", | |
3039 | blob_len)); | |
3040 | } | |
3041 | ||
3042 | cFYI(1, | |
3043 | ("NTLMSSP response to Authenticate ")); | |
3044 | ||
3045 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3046 | if ((long) (bcc_ptr) % 2) { | |
3047 | remaining_words = | |
3048 | (BCC(smb_buffer_response) | |
3049 | - 1) / 2; | |
3050 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
3051 | } else { | |
3052 | remaining_words = BCC(smb_buffer_response) / 2; | |
3053 | } | |
3054 | len = | |
3055 | UniStrnlen((wchar_t *) bcc_ptr,remaining_words - 1); | |
3056 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
3057 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
3058 | terminating last Unicode string in response */ | |
a424f8bf | 3059 | if(ses->serverOS) |
08775834 | 3060 | kfree(ses->serverOS); |
1da177e4 | 3061 | ses->serverOS = |
e915fc49 | 3062 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 3063 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 3064 | (__le16 *) |
1da177e4 LT |
3065 | bcc_ptr, len, |
3066 | nls_codepage); | |
3067 | bcc_ptr += 2 * (len + 1); | |
3068 | remaining_words -= len + 1; | |
3069 | ses->serverOS[2 * len] = 0; | |
3070 | ses->serverOS[1 + (2 * len)] = 0; | |
3071 | if (remaining_words > 0) { | |
3072 | len = UniStrnlen((wchar_t *) | |
3073 | bcc_ptr, | |
3074 | remaining_words | |
3075 | - 1); | |
cd49b492 | 3076 | kfree(ses->serverNOS); |
1da177e4 | 3077 | ses->serverNOS = |
e915fc49 | 3078 | kzalloc(2 * (len + 1), |
1da177e4 LT |
3079 | GFP_KERNEL); |
3080 | cifs_strfromUCS_le(ses-> | |
3081 | serverNOS, | |
e89dc920 | 3082 | (__le16 *) |
1da177e4 LT |
3083 | bcc_ptr, |
3084 | len, | |
3085 | nls_codepage); | |
3086 | bcc_ptr += 2 * (len + 1); | |
3087 | ses->serverNOS[2 * len] = 0; | |
3088 | ses->serverNOS[1+(2*len)] = 0; | |
3089 | remaining_words -= len + 1; | |
3090 | if (remaining_words > 0) { | |
3091 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
3092 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ | |
a424f8bf SF |
3093 | if(ses->serverDomain) |
3094 | kfree(ses->serverDomain); | |
1da177e4 | 3095 | ses->serverDomain = |
e915fc49 | 3096 | kzalloc(2 * |
1da177e4 LT |
3097 | (len + |
3098 | 1), | |
3099 | GFP_KERNEL); | |
3100 | cifs_strfromUCS_le | |
3101 | (ses-> | |
3102 | serverDomain, | |
e89dc920 | 3103 | (__le16 *) |
1da177e4 LT |
3104 | bcc_ptr, len, |
3105 | nls_codepage); | |
3106 | bcc_ptr += | |
3107 | 2 * (len + 1); | |
3108 | ses-> | |
3109 | serverDomain[2 | |
3110 | * len] | |
3111 | = 0; | |
3112 | ses-> | |
3113 | serverDomain[1 | |
3114 | + | |
3115 | (2 | |
3116 | * | |
3117 | len)] | |
3118 | = 0; | |
3119 | } /* else no more room so create dummy domain string */ | |
a424f8bf SF |
3120 | else { |
3121 | if(ses->serverDomain) | |
3122 | kfree(ses->serverDomain); | |
e915fc49 | 3123 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 3124 | } |
1da177e4 | 3125 | } else { /* no room so create dummy domain and NOS string */ |
a424f8bf SF |
3126 | if(ses->serverDomain) |
3127 | kfree(ses->serverDomain); | |
e915fc49 | 3128 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 3129 | kfree(ses->serverNOS); |
e915fc49 | 3130 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3131 | } |
3132 | } else { /* ASCII */ | |
3133 | len = strnlen(bcc_ptr, 1024); | |
3134 | if (((long) bcc_ptr + len) - | |
3135 | (long) pByteArea(smb_buffer_response) | |
3136 | <= BCC(smb_buffer_response)) { | |
a424f8bf SF |
3137 | if(ses->serverOS) |
3138 | kfree(ses->serverOS); | |
e915fc49 | 3139 | ses->serverOS = kzalloc(len + 1,GFP_KERNEL); |
1da177e4 LT |
3140 | strncpy(ses->serverOS,bcc_ptr, len); |
3141 | ||
3142 | bcc_ptr += len; | |
3143 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3144 | bcc_ptr++; | |
3145 | ||
3146 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3147 | kfree(ses->serverNOS); |
e915fc49 | 3148 | ses->serverNOS = kzalloc(len+1,GFP_KERNEL); |
1da177e4 LT |
3149 | strncpy(ses->serverNOS, bcc_ptr, len); |
3150 | bcc_ptr += len; | |
3151 | bcc_ptr[0] = 0; | |
3152 | bcc_ptr++; | |
3153 | ||
3154 | len = strnlen(bcc_ptr, 1024); | |
a424f8bf SF |
3155 | if(ses->serverDomain) |
3156 | kfree(ses->serverDomain); | |
e915fc49 | 3157 | ses->serverDomain = kzalloc(len+1,GFP_KERNEL); |
1da177e4 LT |
3158 | strncpy(ses->serverDomain, bcc_ptr, len); |
3159 | bcc_ptr += len; | |
3160 | bcc_ptr[0] = 0; | |
3161 | bcc_ptr++; | |
3162 | } else | |
3163 | cFYI(1, | |
3164 | ("Variable field of length %d extends beyond end of smb ", | |
3165 | len)); | |
3166 | } | |
3167 | } else { | |
3168 | cERROR(1, | |
3169 | (" Security Blob Length extends beyond end of SMB")); | |
3170 | } | |
3171 | } else { | |
3172 | cERROR(1, ("No session structure passed in.")); | |
3173 | } | |
3174 | } else { | |
3175 | cERROR(1, | |
3176 | (" Invalid Word count %d: ", | |
3177 | smb_buffer_response->WordCount)); | |
3178 | rc = -EIO; | |
3179 | } | |
3180 | ||
3181 | if (smb_buffer) | |
3182 | cifs_buf_release(smb_buffer); | |
3183 | ||
3184 | return rc; | |
3185 | } | |
3186 | ||
3187 | int | |
3188 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3189 | const char *tree, struct cifsTconInfo *tcon, | |
3190 | const struct nls_table *nls_codepage) | |
3191 | { | |
3192 | struct smb_hdr *smb_buffer; | |
3193 | struct smb_hdr *smb_buffer_response; | |
3194 | TCONX_REQ *pSMB; | |
3195 | TCONX_RSP *pSMBr; | |
3196 | unsigned char *bcc_ptr; | |
3197 | int rc = 0; | |
3198 | int length; | |
3199 | __u16 count; | |
3200 | ||
3201 | if (ses == NULL) | |
3202 | return -EIO; | |
3203 | ||
3204 | smb_buffer = cifs_buf_get(); | |
3205 | if (smb_buffer == NULL) { | |
3206 | return -ENOMEM; | |
3207 | } | |
3208 | smb_buffer_response = smb_buffer; | |
3209 | ||
3210 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3211 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3212 | |
3213 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3214 | smb_buffer->Uid = ses->Suid; |
3215 | pSMB = (TCONX_REQ *) smb_buffer; | |
3216 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3217 | ||
3218 | pSMB->AndXCommand = 0xFF; | |
3219 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3220 | bcc_ptr = &pSMB->Password[0]; |
eeac8047 SF |
3221 | if((ses->server->secMode) & SECMODE_USER) { |
3222 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ | |
7c7b25bc | 3223 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3224 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3225 | /* already aligned so no need to do it below */ |
eeac8047 | 3226 | } else { |
7c7b25bc | 3227 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3228 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3229 | specified as required (when that support is added to | |
3230 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3231 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3232 | by Samba (not sure whether other servers allow |
3233 | NTLMv2 password here) */ | |
7c7b25bc SF |
3234 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
3235 | if((extended_security & CIFSSEC_MAY_LANMAN) && | |
3236 | (ses->server->secType == LANMAN)) | |
3237 | calc_lanman_hash(ses, bcc_ptr); | |
3238 | else | |
3239 | #endif /* CIFS_WEAK_PW_HASH */ | |
eeac8047 SF |
3240 | SMBNTencrypt(ses->password, |
3241 | ses->server->cryptKey, | |
3242 | bcc_ptr); | |
3243 | ||
7c7b25bc SF |
3244 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
3245 | if(ses->capabilities & CAP_UNICODE) { | |
3246 | /* must align unicode strings */ | |
3247 | *bcc_ptr = 0; /* null byte password */ | |
3248 | bcc_ptr++; | |
3249 | } | |
eeac8047 | 3250 | } |
1da177e4 | 3251 | |
a878fb22 SF |
3252 | if(ses->server->secMode & |
3253 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
3254 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3255 | ||
3256 | if (ses->capabilities & CAP_STATUS32) { | |
3257 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3258 | } | |
3259 | if (ses->capabilities & CAP_DFS) { | |
3260 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3261 | } | |
3262 | if (ses->capabilities & CAP_UNICODE) { | |
3263 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3264 | length = | |
a878fb22 SF |
3265 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3266 | 6 /* max utf8 char length in bytes */ * | |
3267 | (/* server len*/ + 256 /* share len */), nls_codepage); | |
3268 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3269 | bcc_ptr += 2; /* skip trailing null */ |
3270 | } else { /* ASCII */ | |
1da177e4 LT |
3271 | strcpy(bcc_ptr, tree); |
3272 | bcc_ptr += strlen(tree) + 1; | |
3273 | } | |
3274 | strcpy(bcc_ptr, "?????"); | |
3275 | bcc_ptr += strlen("?????"); | |
3276 | bcc_ptr += 1; | |
3277 | count = bcc_ptr - &pSMB->Password[0]; | |
3278 | pSMB->hdr.smb_buf_length += count; | |
3279 | pSMB->ByteCount = cpu_to_le16(count); | |
3280 | ||
3281 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, 0); | |
3282 | ||
3283 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3284 | /* above now done in SendReceive */ | |
3285 | if ((rc == 0) && (tcon != NULL)) { | |
3286 | tcon->tidStatus = CifsGood; | |
3287 | tcon->tid = smb_buffer_response->Tid; | |
3288 | bcc_ptr = pByteArea(smb_buffer_response); | |
3289 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
3290 | /* skip service field (NB: this field is always ASCII) */ | |
3291 | bcc_ptr += length + 1; | |
3292 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); | |
3293 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3294 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3295 | if ((bcc_ptr + (2 * length)) - | |
3296 | pByteArea(smb_buffer_response) <= | |
3297 | BCC(smb_buffer_response)) { | |
f99d49ad | 3298 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3299 | tcon->nativeFileSystem = |
e915fc49 | 3300 | kzalloc(length + 2, GFP_KERNEL); |
1da177e4 | 3301 | cifs_strfromUCS_le(tcon->nativeFileSystem, |
e89dc920 | 3302 | (__le16 *) bcc_ptr, |
1da177e4 LT |
3303 | length, nls_codepage); |
3304 | bcc_ptr += 2 * length; | |
3305 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3306 | bcc_ptr[1] = 0; | |
3307 | bcc_ptr += 2; | |
3308 | } | |
3309 | /* else do not bother copying these informational fields */ | |
3310 | } else { | |
3311 | length = strnlen(bcc_ptr, 1024); | |
3312 | if ((bcc_ptr + length) - | |
3313 | pByteArea(smb_buffer_response) <= | |
3314 | BCC(smb_buffer_response)) { | |
f99d49ad | 3315 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3316 | tcon->nativeFileSystem = |
e915fc49 | 3317 | kzalloc(length + 1, GFP_KERNEL); |
1da177e4 LT |
3318 | strncpy(tcon->nativeFileSystem, bcc_ptr, |
3319 | length); | |
3320 | } | |
3321 | /* else do not bother copying these informational fields */ | |
3322 | } | |
1a4e15a0 SF |
3323 | if((smb_buffer_response->WordCount == 3) || |
3324 | (smb_buffer_response->WordCount == 7)) | |
3325 | /* field is in same location */ | |
3979877e SF |
3326 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
3327 | else | |
3328 | tcon->Flags = 0; | |
1da177e4 LT |
3329 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3330 | } else if ((rc == 0) && tcon == NULL) { | |
3331 | /* all we need to save for IPC$ connection */ | |
3332 | ses->ipc_tid = smb_buffer_response->Tid; | |
3333 | } | |
3334 | ||
3335 | if (smb_buffer) | |
3336 | cifs_buf_release(smb_buffer); | |
3337 | return rc; | |
3338 | } | |
3339 | ||
3340 | int | |
3341 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3342 | { | |
3343 | int rc = 0; | |
3344 | int xid; | |
3345 | struct cifsSesInfo *ses = NULL; | |
3346 | struct task_struct *cifsd_task; | |
2fe87f02 | 3347 | char * tmp; |
1da177e4 LT |
3348 | |
3349 | xid = GetXid(); | |
3350 | ||
3351 | if (cifs_sb->tcon) { | |
3352 | ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ | |
3353 | rc = CIFSSMBTDis(xid, cifs_sb->tcon); | |
3354 | if (rc == -EBUSY) { | |
3355 | FreeXid(xid); | |
3356 | return 0; | |
3357 | } | |
3358 | tconInfoFree(cifs_sb->tcon); | |
3359 | if ((ses) && (ses->server)) { | |
3360 | /* save off task so we do not refer to ses later */ | |
3361 | cifsd_task = ses->server->tsk; | |
3362 | cFYI(1, ("About to do SMBLogoff ")); | |
3363 | rc = CIFSSMBLogoff(xid, ses); | |
3364 | if (rc == -EBUSY) { | |
3365 | FreeXid(xid); | |
3366 | return 0; | |
3367 | } else if (rc == -ESHUTDOWN) { | |
5d9c7206 | 3368 | cFYI(1,("Waking up socket by sending signal")); |
f7f7c31c | 3369 | if (cifsd_task) { |
5d9c7206 | 3370 | force_sig(SIGKILL,cifsd_task); |
aaf737ad | 3371 | kthread_stop(cifsd_task); |
f191401f | 3372 | } |
1da177e4 LT |
3373 | rc = 0; |
3374 | } /* else - we have an smb session | |
3375 | left on this socket do not kill cifsd */ | |
3376 | } else | |
3377 | cFYI(1, ("No session or bad tcon")); | |
3378 | } | |
3379 | ||
3380 | cifs_sb->tcon = NULL; | |
2fe87f02 SF |
3381 | tmp = cifs_sb->prepath; |
3382 | cifs_sb->prepathlen = 0; | |
3383 | cifs_sb->prepath = NULL; | |
3384 | kfree(tmp); | |
041e0e3b NA |
3385 | if (ses) |
3386 | schedule_timeout_interruptible(msecs_to_jiffies(500)); | |
1da177e4 LT |
3387 | if (ses) |
3388 | sesInfoFree(ses); | |
3389 | ||
3390 | FreeXid(xid); | |
3391 | return rc; /* BB check if we should always return zero here */ | |
3392 | } | |
3393 | ||
3394 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
3395 | struct nls_table * nls_info) | |
3396 | { | |
3397 | int rc = 0; | |
7c7b25bc | 3398 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
1da177e4 | 3399 | int ntlmv2_flag = FALSE; |
ad009ac9 | 3400 | int first_time = 0; |
1da177e4 LT |
3401 | |
3402 | /* what if server changes its buffer size after dropping the session? */ | |
3403 | if(pSesInfo->server->maxBuf == 0) /* no need to send on reconnect */ { | |
3404 | rc = CIFSSMBNegotiate(xid, pSesInfo); | |
3405 | if(rc == -EAGAIN) /* retry only once on 1st time connection */ { | |
3406 | rc = CIFSSMBNegotiate(xid, pSesInfo); | |
3407 | if(rc == -EAGAIN) | |
3408 | rc = -EHOSTDOWN; | |
3409 | } | |
3410 | if(rc == 0) { | |
3411 | spin_lock(&GlobalMid_Lock); | |
3412 | if(pSesInfo->server->tcpStatus != CifsExiting) | |
3413 | pSesInfo->server->tcpStatus = CifsGood; | |
3414 | else | |
3415 | rc = -EHOSTDOWN; | |
3416 | spin_unlock(&GlobalMid_Lock); | |
3417 | ||
3418 | } | |
ad009ac9 | 3419 | first_time = 1; |
1da177e4 LT |
3420 | } |
3421 | if (!rc) { | |
9ac00b7d | 3422 | pSesInfo->flags = 0; |
1da177e4 LT |
3423 | pSesInfo->capabilities = pSesInfo->server->capabilities; |
3424 | if(linuxExtEnabled == 0) | |
3425 | pSesInfo->capabilities &= (~CAP_UNIX); | |
ad009ac9 | 3426 | /* pSesInfo->sequence_number = 0;*/ |
175ec9e1 | 3427 | cFYI(1,("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", |
1da177e4 LT |
3428 | pSesInfo->server->secMode, |
3429 | pSesInfo->server->capabilities, | |
175ec9e1 | 3430 | pSesInfo->server->timeAdj)); |
189acaae | 3431 | if(experimEnabled < 2) |
3979877e SF |
3432 | rc = CIFS_SessSetup(xid, pSesInfo, |
3433 | first_time, nls_info); | |
189acaae | 3434 | else if (extended_security |
175ec9e1 SF |
3435 | && (pSesInfo->capabilities |
3436 | & CAP_EXTENDED_SECURITY) | |
1da177e4 | 3437 | && (pSesInfo->server->secType == NTLMSSP)) { |
189acaae | 3438 | rc = -EOPNOTSUPP; |
1da177e4 LT |
3439 | } else if (extended_security |
3440 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
3441 | && (pSesInfo->server->secType == RawNTLMSSP)) { | |
5815449d | 3442 | cFYI(1, ("NTLMSSP sesssetup")); |
1da177e4 LT |
3443 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, |
3444 | pSesInfo, | |
3445 | &ntlmv2_flag, | |
3446 | nls_info); | |
3447 | if (!rc) { | |
3448 | if(ntlmv2_flag) { | |
3449 | char * v2_response; | |
175ec9e1 | 3450 | cFYI(1,("more secure NTLM ver2 hash")); |
1da177e4 LT |
3451 | if(CalcNTLMv2_partial_mac_key(pSesInfo, |
3452 | nls_info)) { | |
3453 | rc = -ENOMEM; | |
3454 | goto ss_err_exit; | |
3455 | } else | |
3456 | v2_response = kmalloc(16 + 64 /* blob */, GFP_KERNEL); | |
3457 | if(v2_response) { | |
3458 | CalcNTLMv2_response(pSesInfo,v2_response); | |
ad009ac9 SF |
3459 | /* if(first_time) |
3460 | cifs_calculate_ntlmv2_mac_key( | |
3461 | pSesInfo->server->mac_signing_key, | |
3462 | response, ntlm_session_key, */ | |
1da177e4 LT |
3463 | kfree(v2_response); |
3464 | /* BB Put dummy sig in SessSetup PDU? */ | |
3465 | } else { | |
3466 | rc = -ENOMEM; | |
3467 | goto ss_err_exit; | |
3468 | } | |
3469 | ||
3470 | } else { | |
3471 | SMBNTencrypt(pSesInfo->password, | |
3472 | pSesInfo->server->cryptKey, | |
3473 | ntlm_session_key); | |
3474 | ||
ad009ac9 SF |
3475 | if(first_time) |
3476 | cifs_calculate_mac_key( | |
3477 | pSesInfo->server->mac_signing_key, | |
3478 | ntlm_session_key, | |
3479 | pSesInfo->password); | |
1da177e4 LT |
3480 | } |
3481 | /* for better security the weaker lanman hash not sent | |
3482 | in AuthSessSetup so we no longer calculate it */ | |
3483 | ||
3484 | rc = CIFSNTLMSSPAuthSessSetup(xid, | |
3485 | pSesInfo, | |
3486 | ntlm_session_key, | |
3487 | ntlmv2_flag, | |
3488 | nls_info); | |
3489 | } | |
3490 | } else { /* old style NTLM 0.12 session setup */ | |
3491 | SMBNTencrypt(pSesInfo->password, | |
3492 | pSesInfo->server->cryptKey, | |
3493 | ntlm_session_key); | |
3494 | ||
ad009ac9 SF |
3495 | if(first_time) |
3496 | cifs_calculate_mac_key( | |
3497 | pSesInfo->server->mac_signing_key, | |
3498 | ntlm_session_key, pSesInfo->password); | |
3499 | ||
1da177e4 LT |
3500 | rc = CIFSSessSetup(xid, pSesInfo, |
3501 | ntlm_session_key, nls_info); | |
3502 | } | |
3503 | if (rc) { | |
3504 | cERROR(1,("Send error in SessSetup = %d",rc)); | |
3505 | } else { | |
3506 | cFYI(1,("CIFS Session Established successfully")); | |
3507 | pSesInfo->status = CifsGood; | |
3508 | } | |
3509 | } | |
3510 | ss_err_exit: | |
3511 | return rc; | |
3512 | } | |
3513 |