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1da177e4 LT |
1 | /* |
2 | * fs/cifs/connect.c | |
3 | * | |
5815449d | 4 | * Copyright (C) International Business Machines Corp., 2002,2006 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * This library is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU Lesser General Public License as published | |
9 | * by the Free Software Foundation; either version 2.1 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This library is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
15 | * the GNU Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public License | |
18 | * along with this library; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
21 | #include <linux/fs.h> | |
22 | #include <linux/net.h> | |
23 | #include <linux/string.h> | |
24 | #include <linux/list.h> | |
25 | #include <linux/wait.h> | |
26 | #include <linux/ipv6.h> | |
27 | #include <linux/pagemap.h> | |
28 | #include <linux/ctype.h> | |
29 | #include <linux/utsname.h> | |
30 | #include <linux/mempool.h> | |
b8643e1b | 31 | #include <linux/delay.h> |
f191401f | 32 | #include <linux/completion.h> |
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 | allow_signal(SIGKILL); |
352 | current->flags |= PF_MEMALLOC; | |
353 | server->tsk = current; /* save process info to wake at shutdown */ | |
354 | cFYI(1, ("Demultiplex PID: %d", current->pid)); | |
355 | write_lock(&GlobalSMBSeslock); | |
356 | atomic_inc(&tcpSesAllocCount); | |
357 | length = tcpSesAllocCount.counter; | |
358 | write_unlock(&GlobalSMBSeslock); | |
f191401f | 359 | complete(&cifsd_complete); |
1da177e4 LT |
360 | if(length > 1) { |
361 | mempool_resize(cifs_req_poolp, | |
362 | length + cifs_min_rcv, | |
363 | GFP_KERNEL); | |
364 | } | |
365 | ||
aaf737ad | 366 | while (!kthread_should_stop()) { |
ede1327e SF |
367 | if (try_to_freeze()) |
368 | continue; | |
b8643e1b SF |
369 | if (bigbuf == NULL) { |
370 | bigbuf = cifs_buf_get(); | |
0fd1ffe0 PM |
371 | if (!bigbuf) { |
372 | cERROR(1, ("No memory for large SMB response")); | |
b8643e1b SF |
373 | msleep(3000); |
374 | /* retry will check if exiting */ | |
375 | continue; | |
376 | } | |
0fd1ffe0 PM |
377 | } else if (isLargeBuf) { |
378 | /* we are reusing a dirty large buf, clear its start */ | |
b8643e1b | 379 | memset(bigbuf, 0, sizeof (struct smb_hdr)); |
1da177e4 | 380 | } |
b8643e1b SF |
381 | |
382 | if (smallbuf == NULL) { | |
383 | smallbuf = cifs_small_buf_get(); | |
0fd1ffe0 PM |
384 | if (!smallbuf) { |
385 | cERROR(1, ("No memory for SMB response")); | |
b8643e1b SF |
386 | msleep(1000); |
387 | /* retry will check if exiting */ | |
388 | continue; | |
389 | } | |
390 | /* beginning of smb buffer is cleared in our buf_get */ | |
391 | } else /* if existing small buf clear beginning */ | |
392 | memset(smallbuf, 0, sizeof (struct smb_hdr)); | |
393 | ||
394 | isLargeBuf = FALSE; | |
e4eb295d | 395 | isMultiRsp = FALSE; |
b8643e1b | 396 | smb_buffer = smallbuf; |
1da177e4 LT |
397 | iov.iov_base = smb_buffer; |
398 | iov.iov_len = 4; | |
399 | smb_msg.msg_control = NULL; | |
400 | smb_msg.msg_controllen = 0; | |
401 | length = | |
402 | kernel_recvmsg(csocket, &smb_msg, | |
403 | &iov, 1, 4, 0 /* BB see socket.h flags */); | |
404 | ||
aaf737ad | 405 | if ( kthread_should_stop() ) { |
1da177e4 LT |
406 | break; |
407 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
0fd1ffe0 | 408 | cFYI(1, ("Reconnect after server stopped responding")); |
1da177e4 | 409 | cifs_reconnect(server); |
0fd1ffe0 | 410 | cFYI(1, ("call to reconnect done")); |
1da177e4 LT |
411 | csocket = server->ssocket; |
412 | continue; | |
413 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 414 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
415 | allowing socket to clear and app threads to set |
416 | tcpStatus CifsNeedReconnect if server hung */ | |
417 | continue; | |
418 | } else if (length <= 0) { | |
0fd1ffe0 PM |
419 | if (server->tcpStatus == CifsNew) { |
420 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
421 | /* some servers kill the TCP session rather than |
422 | returning an SMB negprot error, in which | |
423 | case reconnecting here is not going to help, | |
424 | and so simply return error to mount */ | |
1da177e4 LT |
425 | break; |
426 | } | |
0fd1ffe0 | 427 | if (!try_to_freeze() && (length == -EINTR)) { |
1da177e4 LT |
428 | cFYI(1,("cifsd thread killed")); |
429 | break; | |
430 | } | |
57337e42 SF |
431 | cFYI(1,("Reconnect after unexpected peek error %d", |
432 | length)); | |
1da177e4 LT |
433 | cifs_reconnect(server); |
434 | csocket = server->ssocket; | |
435 | wake_up(&server->response_q); | |
436 | continue; | |
46810cbf SF |
437 | } else if (length < 4) { |
438 | cFYI(1, | |
57337e42 | 439 | ("Frame under four bytes received (%d bytes long)", |
46810cbf SF |
440 | length)); |
441 | cifs_reconnect(server); | |
442 | csocket = server->ssocket; | |
443 | wake_up(&server->response_q); | |
444 | continue; | |
445 | } | |
1da177e4 | 446 | |
70ca734a SF |
447 | /* The right amount was read from socket - 4 bytes */ |
448 | /* so we can now interpret the length field */ | |
46810cbf | 449 | |
70ca734a SF |
450 | /* the first byte big endian of the length field, |
451 | is actually not part of the length but the type | |
452 | with the most common, zero, as regular data */ | |
453 | temp = *((char *) smb_buffer); | |
46810cbf | 454 | |
70ca734a SF |
455 | /* Note that FC 1001 length is big endian on the wire, |
456 | but we convert it here so it is always manipulated | |
457 | as host byte order */ | |
46810cbf | 458 | pdu_length = ntohl(smb_buffer->smb_buf_length); |
70ca734a SF |
459 | smb_buffer->smb_buf_length = pdu_length; |
460 | ||
461 | cFYI(1,("rfc1002 length 0x%x)", pdu_length+4)); | |
46810cbf | 462 | |
70ca734a | 463 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
e4eb295d | 464 | continue; |
70ca734a | 465 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
e4eb295d SF |
466 | cFYI(1,("Good RFC 1002 session rsp")); |
467 | continue; | |
70ca734a | 468 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
46810cbf SF |
469 | /* we get this from Windows 98 instead of |
470 | an error on SMB negprot response */ | |
e4eb295d | 471 | cFYI(1,("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 472 | pdu_length)); |
46810cbf SF |
473 | if(server->tcpStatus == CifsNew) { |
474 | /* if nack on negprot (rather than | |
475 | ret of smb negprot error) reconnecting | |
476 | not going to help, ret error to mount */ | |
477 | break; | |
478 | } else { | |
479 | /* give server a second to | |
480 | clean up before reconnect attempt */ | |
481 | msleep(1000); | |
482 | /* always try 445 first on reconnect | |
483 | since we get NACK on some if we ever | |
484 | connected to port 139 (the NACK is | |
485 | since we do not begin with RFC1001 | |
486 | session initialize frame) */ | |
487 | server->addr.sockAddr.sin_port = | |
488 | htons(CIFS_PORT); | |
1da177e4 LT |
489 | cifs_reconnect(server); |
490 | csocket = server->ssocket; | |
46810cbf | 491 | wake_up(&server->response_q); |
1da177e4 | 492 | continue; |
46810cbf | 493 | } |
70ca734a | 494 | } else if (temp != (char) 0) { |
46810cbf | 495 | cERROR(1,("Unknown RFC 1002 frame")); |
70ca734a SF |
496 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
497 | length); | |
46810cbf SF |
498 | cifs_reconnect(server); |
499 | csocket = server->ssocket; | |
500 | continue; | |
e4eb295d SF |
501 | } |
502 | ||
503 | /* else we have an SMB response */ | |
504 | if((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || | |
46810cbf | 505 | (pdu_length < sizeof (struct smb_hdr) - 1 - 4)) { |
e4eb295d | 506 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 507 | length, pdu_length+4)); |
e4eb295d SF |
508 | cifs_reconnect(server); |
509 | csocket = server->ssocket; | |
510 | wake_up(&server->response_q); | |
511 | continue; | |
512 | } | |
513 | ||
514 | /* else length ok */ | |
515 | reconnect = 0; | |
516 | ||
ec637e3f | 517 | if(pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
e4eb295d SF |
518 | isLargeBuf = TRUE; |
519 | memcpy(bigbuf, smallbuf, 4); | |
520 | smb_buffer = bigbuf; | |
521 | } | |
522 | length = 0; | |
523 | iov.iov_base = 4 + (char *)smb_buffer; | |
524 | iov.iov_len = pdu_length; | |
525 | for (total_read = 0; total_read < pdu_length; | |
526 | total_read += length) { | |
527 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
528 | pdu_length - total_read, 0); | |
aaf737ad | 529 | if( kthread_should_stop() || |
e4eb295d SF |
530 | (length == -EINTR)) { |
531 | /* then will exit */ | |
532 | reconnect = 2; | |
533 | break; | |
534 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
535 | cifs_reconnect(server); |
536 | csocket = server->ssocket; | |
e4eb295d SF |
537 | /* Reconnect wakes up rspns q */ |
538 | /* Now we will reread sock */ | |
539 | reconnect = 1; | |
540 | break; | |
541 | } else if ((length == -ERESTARTSYS) || | |
542 | (length == -EAGAIN)) { | |
543 | msleep(1); /* minimum sleep to prevent looping, | |
544 | allowing socket to clear and app | |
545 | threads to set tcpStatus | |
546 | CifsNeedReconnect if server hung*/ | |
46810cbf | 547 | continue; |
e4eb295d SF |
548 | } else if (length <= 0) { |
549 | cERROR(1,("Received no data, expecting %d", | |
550 | pdu_length - total_read)); | |
551 | cifs_reconnect(server); | |
552 | csocket = server->ssocket; | |
553 | reconnect = 1; | |
554 | break; | |
46810cbf | 555 | } |
e4eb295d SF |
556 | } |
557 | if(reconnect == 2) | |
558 | break; | |
559 | else if(reconnect == 1) | |
560 | continue; | |
1da177e4 | 561 | |
e4eb295d SF |
562 | length += 4; /* account for rfc1002 hdr */ |
563 | ||
09d1db5c | 564 | |
e4eb295d | 565 | dump_smb(smb_buffer, length); |
184ed211 | 566 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 567 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
568 | continue; |
569 | } | |
1da177e4 | 570 | |
e4eb295d SF |
571 | |
572 | task_to_wake = NULL; | |
573 | spin_lock(&GlobalMid_Lock); | |
574 | list_for_each(tmp, &server->pending_mid_q) { | |
575 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
576 | ||
577 | if ((mid_entry->mid == smb_buffer->Mid) && | |
578 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && | |
579 | (mid_entry->command == smb_buffer->Command)) { | |
e4eb295d SF |
580 | if(check2ndT2(smb_buffer,server->maxBuf) > 0) { |
581 | /* We have a multipart transact2 resp */ | |
cd63499c | 582 | isMultiRsp = TRUE; |
e4eb295d SF |
583 | if(mid_entry->resp_buf) { |
584 | /* merge response - fix up 1st*/ | |
585 | if(coalesce_t2(smb_buffer, | |
586 | mid_entry->resp_buf)) { | |
3979877e | 587 | mid_entry->multiRsp = 1; |
e4eb295d SF |
588 | break; |
589 | } else { | |
590 | /* all parts received */ | |
3979877e | 591 | mid_entry->multiEnd = 1; |
e4eb295d SF |
592 | goto multi_t2_fnd; |
593 | } | |
594 | } else { | |
595 | if(!isLargeBuf) { | |
596 | cERROR(1,("1st trans2 resp needs bigbuf")); | |
597 | /* BB maybe we can fix this up, switch | |
598 | to already allocated large buffer? */ | |
599 | } else { | |
cd63499c | 600 | /* Have first buffer */ |
e4eb295d SF |
601 | mid_entry->resp_buf = |
602 | smb_buffer; | |
603 | mid_entry->largeBuf = 1; | |
e4eb295d SF |
604 | bigbuf = NULL; |
605 | } | |
606 | } | |
607 | break; | |
608 | } | |
609 | mid_entry->resp_buf = smb_buffer; | |
46810cbf | 610 | if(isLargeBuf) |
e4eb295d | 611 | mid_entry->largeBuf = 1; |
46810cbf | 612 | else |
e4eb295d SF |
613 | mid_entry->largeBuf = 0; |
614 | multi_t2_fnd: | |
615 | task_to_wake = mid_entry->tsk; | |
616 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
617 | #ifdef CONFIG_CIFS_STATS2 |
618 | mid_entry->when_received = jiffies; | |
619 | #endif | |
3a5ff61c SF |
620 | /* so we do not time out requests to server |
621 | which is still responding (since server could | |
622 | be busy but not dead) */ | |
623 | server->lstrp = jiffies; | |
e4eb295d | 624 | break; |
46810cbf | 625 | } |
1da177e4 | 626 | } |
e4eb295d SF |
627 | spin_unlock(&GlobalMid_Lock); |
628 | if (task_to_wake) { | |
cd63499c SF |
629 | /* Was previous buf put in mpx struct for multi-rsp? */ |
630 | if(!isMultiRsp) { | |
631 | /* smb buffer will be freed by user thread */ | |
632 | if(isLargeBuf) { | |
633 | bigbuf = NULL; | |
634 | } else | |
635 | smallbuf = NULL; | |
636 | } | |
e4eb295d | 637 | wake_up_process(task_to_wake); |
d7c8c94d | 638 | } else if ((is_valid_oplock_break(smb_buffer, server) == FALSE) |
e4eb295d | 639 | && (isMultiRsp == FALSE)) { |
3979877e | 640 | cERROR(1, ("No task to wake, unknown frame rcvd! NumMids %d", midCount.counter)); |
70ca734a SF |
641 | cifs_dump_mem("Received Data is: ",(char *)smb_buffer, |
642 | sizeof(struct smb_hdr)); | |
3979877e SF |
643 | #ifdef CONFIG_CIFS_DEBUG2 |
644 | cifs_dump_detail(smb_buffer); | |
645 | cifs_dump_mids(server); | |
646 | #endif /* CIFS_DEBUG2 */ | |
647 | ||
e4eb295d SF |
648 | } |
649 | } /* end while !EXITING */ | |
650 | ||
1da177e4 LT |
651 | spin_lock(&GlobalMid_Lock); |
652 | server->tcpStatus = CifsExiting; | |
653 | server->tsk = NULL; | |
31ca3bc3 SF |
654 | /* check if we have blocked requests that need to free */ |
655 | /* Note that cifs_max_pending is normally 50, but | |
656 | can be set at module install time to as little as two */ | |
657 | if(atomic_read(&server->inFlight) >= cifs_max_pending) | |
658 | atomic_set(&server->inFlight, cifs_max_pending - 1); | |
659 | /* We do not want to set the max_pending too low or we | |
660 | could end up with the counter going negative */ | |
1da177e4 LT |
661 | spin_unlock(&GlobalMid_Lock); |
662 | /* Although there should not be any requests blocked on | |
663 | this queue it can not hurt to be paranoid and try to wake up requests | |
09d1db5c | 664 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
665 | to the same server - they now will see the session is in exit state |
666 | and get out of SendReceive. */ | |
667 | wake_up_all(&server->request_q); | |
668 | /* give those requests time to exit */ | |
b8643e1b SF |
669 | msleep(125); |
670 | ||
1da177e4 LT |
671 | if(server->ssocket) { |
672 | sock_release(csocket); | |
673 | server->ssocket = NULL; | |
674 | } | |
b8643e1b SF |
675 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
676 | if (bigbuf != NULL) | |
677 | cifs_buf_release(bigbuf); | |
678 | if (smallbuf != NULL) | |
679 | cifs_small_buf_release(smallbuf); | |
1da177e4 LT |
680 | |
681 | read_lock(&GlobalSMBSeslock); | |
682 | if (list_empty(&server->pending_mid_q)) { | |
09d1db5c SF |
683 | /* loop through server session structures attached to this and |
684 | mark them dead */ | |
1da177e4 LT |
685 | list_for_each(tmp, &GlobalSMBSessionList) { |
686 | ses = | |
687 | list_entry(tmp, struct cifsSesInfo, | |
688 | cifsSessionList); | |
689 | if (ses->server == server) { | |
690 | ses->status = CifsExiting; | |
691 | ses->server = NULL; | |
692 | } | |
693 | } | |
694 | read_unlock(&GlobalSMBSeslock); | |
695 | } else { | |
31ca3bc3 SF |
696 | /* although we can not zero the server struct pointer yet, |
697 | since there are active requests which may depnd on them, | |
698 | mark the corresponding SMB sessions as exiting too */ | |
699 | list_for_each(tmp, &GlobalSMBSessionList) { | |
700 | ses = list_entry(tmp, struct cifsSesInfo, | |
701 | cifsSessionList); | |
702 | if (ses->server == server) { | |
703 | ses->status = CifsExiting; | |
704 | } | |
705 | } | |
706 | ||
1da177e4 LT |
707 | spin_lock(&GlobalMid_Lock); |
708 | list_for_each(tmp, &server->pending_mid_q) { | |
709 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
710 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
711 | cFYI(1, | |
09d1db5c | 712 | ("Clearing Mid 0x%x - waking up ",mid_entry->mid)); |
1da177e4 LT |
713 | task_to_wake = mid_entry->tsk; |
714 | if(task_to_wake) { | |
715 | wake_up_process(task_to_wake); | |
716 | } | |
717 | } | |
718 | } | |
719 | spin_unlock(&GlobalMid_Lock); | |
720 | read_unlock(&GlobalSMBSeslock); | |
1da177e4 | 721 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 722 | msleep(125); |
1da177e4 LT |
723 | } |
724 | ||
f191401f | 725 | if (!list_empty(&server->pending_mid_q)) { |
1da177e4 LT |
726 | /* mpx threads have not exited yet give them |
727 | at least the smb send timeout time for long ops */ | |
31ca3bc3 SF |
728 | /* due to delays on oplock break requests, we need |
729 | to wait at least 45 seconds before giving up | |
730 | on a request getting a response and going ahead | |
731 | and killing cifsd */ | |
1da177e4 | 732 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 733 | msleep(46000); |
1da177e4 LT |
734 | /* if threads still have not exited they are probably never |
735 | coming home not much else we can do but free the memory */ | |
736 | } | |
1da177e4 LT |
737 | |
738 | write_lock(&GlobalSMBSeslock); | |
739 | atomic_dec(&tcpSesAllocCount); | |
740 | length = tcpSesAllocCount.counter; | |
31ca3bc3 SF |
741 | |
742 | /* last chance to mark ses pointers invalid | |
743 | if there are any pointing to this (e.g | |
744 | if a crazy root user tried to kill cifsd | |
745 | kernel thread explicitly this might happen) */ | |
746 | list_for_each(tmp, &GlobalSMBSessionList) { | |
747 | ses = list_entry(tmp, struct cifsSesInfo, | |
748 | cifsSessionList); | |
749 | if (ses->server == server) { | |
750 | ses->server = NULL; | |
751 | } | |
752 | } | |
1da177e4 | 753 | write_unlock(&GlobalSMBSeslock); |
31ca3bc3 SF |
754 | |
755 | kfree(server); | |
1da177e4 LT |
756 | if(length > 0) { |
757 | mempool_resize(cifs_req_poolp, | |
758 | length + cifs_min_rcv, | |
759 | GFP_KERNEL); | |
760 | } | |
b8643e1b | 761 | |
1da177e4 LT |
762 | return 0; |
763 | } | |
764 | ||
1da177e4 LT |
765 | static int |
766 | cifs_parse_mount_options(char *options, const char *devname,struct smb_vol *vol) | |
767 | { | |
768 | char *value; | |
769 | char *data; | |
770 | unsigned int temp_len, i, j; | |
771 | char separator[2]; | |
772 | ||
773 | separator[0] = ','; | |
774 | separator[1] = 0; | |
775 | ||
12e36b2f | 776 | if (Local_System_Name[0] != 0) |
2cd646a2 SF |
777 | memcpy(vol->source_rfc1001_name, Local_System_Name,15); |
778 | else { | |
12e36b2f LT |
779 | char *nodename = utsname()->nodename; |
780 | int n = strnlen(nodename,15); | |
2cd646a2 | 781 | memset(vol->source_rfc1001_name,0x20,15); |
12e36b2f | 782 | for(i=0 ; i < n ; i++) { |
2cd646a2 SF |
783 | /* does not have to be perfect mapping since field is |
784 | informational, only used for servers that do not support | |
785 | port 445 and it can be overridden at mount time */ | |
12e36b2f | 786 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
2cd646a2 | 787 | } |
1da177e4 LT |
788 | } |
789 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
790 | /* null target name indicates to use *SMBSERVR default called name |
791 | if we end up sending RFC1001 session initialize */ | |
792 | vol->target_rfc1001_name[0] = 0; | |
1da177e4 LT |
793 | vol->linux_uid = current->uid; /* current->euid instead? */ |
794 | vol->linux_gid = current->gid; | |
795 | vol->dir_mode = S_IRWXUGO; | |
796 | /* 2767 perms indicate mandatory locking support */ | |
797 | vol->file_mode = S_IALLUGO & ~(S_ISUID | S_IXGRP); | |
798 | ||
799 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
800 | vol->rw = TRUE; | |
ac67055e JA |
801 | /* default is always to request posix paths. */ |
802 | vol->posix_paths = 1; | |
803 | ||
1da177e4 LT |
804 | if (!options) |
805 | return 1; | |
806 | ||
807 | if(strncmp(options,"sep=",4) == 0) { | |
808 | if(options[4] != 0) { | |
809 | separator[0] = options[4]; | |
810 | options += 5; | |
811 | } else { | |
812 | cFYI(1,("Null separator not allowed")); | |
813 | } | |
814 | } | |
815 | ||
816 | while ((data = strsep(&options, separator)) != NULL) { | |
817 | if (!*data) | |
818 | continue; | |
819 | if ((value = strchr(data, '=')) != NULL) | |
820 | *value++ = '\0'; | |
821 | ||
822 | if (strnicmp(data, "user_xattr",10) == 0) {/*parse before user*/ | |
823 | vol->no_xattr = 0; | |
824 | } else if (strnicmp(data, "nouser_xattr",12) == 0) { | |
825 | vol->no_xattr = 1; | |
826 | } else if (strnicmp(data, "user", 4) == 0) { | |
4b952a9b | 827 | if (!value) { |
1da177e4 LT |
828 | printk(KERN_WARNING |
829 | "CIFS: invalid or missing username\n"); | |
830 | return 1; /* needs_arg; */ | |
4b952a9b SF |
831 | } else if(!*value) { |
832 | /* null user, ie anonymous, authentication */ | |
833 | vol->nullauth = 1; | |
1da177e4 LT |
834 | } |
835 | if (strnlen(value, 200) < 200) { | |
836 | vol->username = value; | |
837 | } else { | |
838 | printk(KERN_WARNING "CIFS: username too long\n"); | |
839 | return 1; | |
840 | } | |
841 | } else if (strnicmp(data, "pass", 4) == 0) { | |
842 | if (!value) { | |
843 | vol->password = NULL; | |
844 | continue; | |
845 | } else if(value[0] == 0) { | |
846 | /* check if string begins with double comma | |
847 | since that would mean the password really | |
848 | does start with a comma, and would not | |
849 | indicate an empty string */ | |
850 | if(value[1] != separator[0]) { | |
851 | vol->password = NULL; | |
852 | continue; | |
853 | } | |
854 | } | |
855 | temp_len = strlen(value); | |
856 | /* removed password length check, NTLM passwords | |
857 | can be arbitrarily long */ | |
858 | ||
859 | /* if comma in password, the string will be | |
860 | prematurely null terminated. Commas in password are | |
861 | specified across the cifs mount interface by a double | |
862 | comma ie ,, and a comma used as in other cases ie ',' | |
863 | as a parameter delimiter/separator is single and due | |
864 | to the strsep above is temporarily zeroed. */ | |
865 | ||
866 | /* NB: password legally can have multiple commas and | |
867 | the only illegal character in a password is null */ | |
868 | ||
09d1db5c SF |
869 | if ((value[temp_len] == 0) && |
870 | (value[temp_len+1] == separator[0])) { | |
1da177e4 LT |
871 | /* reinsert comma */ |
872 | value[temp_len] = separator[0]; | |
873 | temp_len+=2; /* move after the second comma */ | |
874 | while(value[temp_len] != 0) { | |
875 | if (value[temp_len] == separator[0]) { | |
09d1db5c SF |
876 | if (value[temp_len+1] == |
877 | separator[0]) { | |
878 | /* skip second comma */ | |
879 | temp_len++; | |
1da177e4 LT |
880 | } else { |
881 | /* single comma indicating start | |
882 | of next parm */ | |
883 | break; | |
884 | } | |
885 | } | |
886 | temp_len++; | |
887 | } | |
888 | if(value[temp_len] == 0) { | |
889 | options = NULL; | |
890 | } else { | |
891 | value[temp_len] = 0; | |
892 | /* point option to start of next parm */ | |
893 | options = value + temp_len + 1; | |
894 | } | |
895 | /* go from value to value + temp_len condensing | |
896 | double commas to singles. Note that this ends up | |
897 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 898 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
433dc24f SF |
899 | if(vol->password == NULL) { |
900 | printk("CIFS: no memory for pass\n"); | |
901 | return 1; | |
902 | } | |
1da177e4 LT |
903 | for(i=0,j=0;i<temp_len;i++,j++) { |
904 | vol->password[j] = value[i]; | |
09d1db5c SF |
905 | if(value[i] == separator[0] |
906 | && value[i+1] == separator[0]) { | |
1da177e4 LT |
907 | /* skip second comma */ |
908 | i++; | |
909 | } | |
910 | } | |
911 | vol->password[j] = 0; | |
912 | } else { | |
e915fc49 | 913 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
433dc24f SF |
914 | if(vol->password == NULL) { |
915 | printk("CIFS: no memory for pass\n"); | |
916 | return 1; | |
917 | } | |
1da177e4 LT |
918 | strcpy(vol->password, value); |
919 | } | |
920 | } else if (strnicmp(data, "ip", 2) == 0) { | |
921 | if (!value || !*value) { | |
922 | vol->UNCip = NULL; | |
923 | } else if (strnlen(value, 35) < 35) { | |
924 | vol->UNCip = value; | |
925 | } else { | |
926 | printk(KERN_WARNING "CIFS: ip address too long\n"); | |
927 | return 1; | |
928 | } | |
bf820679 SF |
929 | } else if (strnicmp(data, "sec", 3) == 0) { |
930 | if (!value || !*value) { | |
931 | cERROR(1,("no security value specified")); | |
932 | continue; | |
933 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
750d1151 | 934 | vol->secFlg |= CIFSSEC_MAY_KRB5 | |
189acaae | 935 | CIFSSEC_MUST_SIGN; |
bf820679 | 936 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
750d1151 | 937 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
189acaae | 938 | CIFSSEC_MAY_KRB5; */ |
bf820679 SF |
939 | cERROR(1,("Krb5 cifs privacy not supported")); |
940 | return 1; | |
941 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 942 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
bf820679 | 943 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 944 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 945 | CIFSSEC_MUST_SIGN; |
bf820679 | 946 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 947 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 948 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 949 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 950 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
951 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
952 | /* ntlm is default so can be turned off too */ | |
750d1151 | 953 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 954 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 955 | /* BB is there a better way to do this? */ |
750d1151 | 956 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
957 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
958 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
750d1151 | 959 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 960 | #endif |
bf820679 | 961 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 962 | vol->nullauth = 1; |
bf820679 SF |
963 | } else { |
964 | cERROR(1,("bad security option: %s", value)); | |
965 | return 1; | |
966 | } | |
1da177e4 LT |
967 | } else if ((strnicmp(data, "unc", 3) == 0) |
968 | || (strnicmp(data, "target", 6) == 0) | |
969 | || (strnicmp(data, "path", 4) == 0)) { | |
970 | if (!value || !*value) { | |
971 | printk(KERN_WARNING | |
972 | "CIFS: invalid path to network resource\n"); | |
973 | return 1; /* needs_arg; */ | |
974 | } | |
975 | if ((temp_len = strnlen(value, 300)) < 300) { | |
976 | vol->UNC = kmalloc(temp_len+1,GFP_KERNEL); | |
4523cc30 | 977 | if (vol->UNC == NULL) |
1da177e4 LT |
978 | return 1; |
979 | strcpy(vol->UNC,value); | |
980 | if (strncmp(vol->UNC, "//", 2) == 0) { | |
981 | vol->UNC[0] = '\\'; | |
982 | vol->UNC[1] = '\\'; | |
983 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
984 | printk(KERN_WARNING | |
985 | "CIFS: UNC Path does not begin with // or \\\\ \n"); | |
986 | return 1; | |
987 | } | |
988 | } else { | |
989 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
990 | return 1; | |
991 | } | |
992 | } else if ((strnicmp(data, "domain", 3) == 0) | |
993 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
994 | if (!value || !*value) { | |
995 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
996 | return 1; /* needs_arg; */ | |
997 | } | |
998 | /* BB are there cases in which a comma can be valid in | |
999 | a domain name and need special handling? */ | |
3979877e | 1000 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
1001 | vol->domainname = value; |
1002 | cFYI(1, ("Domain name set")); | |
1003 | } else { | |
1004 | printk(KERN_WARNING "CIFS: domain name too long\n"); | |
1005 | return 1; | |
1006 | } | |
2fe87f02 SF |
1007 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
1008 | if (!value || !*value) { | |
1009 | printk(KERN_WARNING | |
1010 | "CIFS: invalid path prefix\n"); | |
1011 | return 1; /* needs_arg; */ | |
1012 | } | |
1013 | if ((temp_len = strnlen(value, 1024)) < 1024) { | |
4523cc30 | 1014 | if (value[0] != '/') |
2fe87f02 SF |
1015 | temp_len++; /* missing leading slash */ |
1016 | vol->prepath = kmalloc(temp_len+1,GFP_KERNEL); | |
4523cc30 | 1017 | if (vol->prepath == NULL) |
2fe87f02 | 1018 | return 1; |
4523cc30 | 1019 | if (value[0] != '/') { |
2fe87f02 SF |
1020 | vol->prepath[0] = '/'; |
1021 | strcpy(vol->prepath+1,value); | |
1022 | } else | |
1023 | strcpy(vol->prepath,value); | |
1024 | cFYI(1,("prefix path %s",vol->prepath)); | |
1025 | } else { | |
1026 | printk(KERN_WARNING "CIFS: prefix too long\n"); | |
1027 | return 1; | |
1028 | } | |
1da177e4 LT |
1029 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
1030 | if (!value || !*value) { | |
1031 | printk(KERN_WARNING "CIFS: invalid iocharset specified\n"); | |
1032 | return 1; /* needs_arg; */ | |
1033 | } | |
1034 | if (strnlen(value, 65) < 65) { | |
4523cc30 | 1035 | if (strnicmp(value,"default",7)) |
1da177e4 LT |
1036 | vol->iocharset = value; |
1037 | /* if iocharset not set load_nls_default used by caller */ | |
1038 | cFYI(1, ("iocharset set to %s",value)); | |
1039 | } else { | |
1040 | printk(KERN_WARNING "CIFS: iocharset name too long.\n"); | |
1041 | return 1; | |
1042 | } | |
1043 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1044 | if (value && *value) { | |
1045 | vol->linux_uid = | |
1046 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1047 | vol->override_uid = 1; |
1da177e4 LT |
1048 | } |
1049 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1050 | if (value && *value) { | |
1051 | vol->linux_gid = | |
1052 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1053 | vol->override_gid = 1; |
1da177e4 LT |
1054 | } |
1055 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1056 | if (value && *value) { | |
1057 | vol->file_mode = | |
1058 | simple_strtoul(value, &value, 0); | |
1059 | } | |
1060 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1061 | if (value && *value) { | |
1062 | vol->dir_mode = | |
1063 | simple_strtoul(value, &value, 0); | |
1064 | } | |
1065 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1066 | if (value && *value) { | |
1067 | vol->dir_mode = | |
1068 | simple_strtoul(value, &value, 0); | |
1069 | } | |
1070 | } else if (strnicmp(data, "port", 4) == 0) { | |
1071 | if (value && *value) { | |
1072 | vol->port = | |
1073 | simple_strtoul(value, &value, 0); | |
1074 | } | |
1075 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1076 | if (value && *value) { | |
1077 | vol->rsize = | |
1078 | simple_strtoul(value, &value, 0); | |
1079 | } | |
1080 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1081 | if (value && *value) { | |
1082 | vol->wsize = | |
1083 | simple_strtoul(value, &value, 0); | |
1084 | } | |
1085 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1086 | if (value && *value) { | |
1087 | vol->sockopt = | |
1088 | simple_strtoul(value, &value, 0); | |
1089 | } | |
1090 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1091 | if (!value || !*value || (*value == ' ')) { | |
1092 | cFYI(1,("invalid (empty) netbiosname specified")); | |
1093 | } else { | |
1094 | memset(vol->source_rfc1001_name,0x20,15); | |
1095 | for(i=0;i<15;i++) { | |
1096 | /* BB are there cases in which a comma can be | |
1097 | valid in this workstation netbios name (and need | |
1098 | special handling)? */ | |
1099 | ||
1100 | /* We do not uppercase netbiosname for user */ | |
1101 | if (value[i]==0) | |
1102 | break; | |
1103 | else | |
1104 | vol->source_rfc1001_name[i] = value[i]; | |
1105 | } | |
1106 | /* The string has 16th byte zero still from | |
1107 | set at top of the function */ | |
4523cc30 | 1108 | if ((i==15) && (value[i] != 0)) |
a10faeb2 SF |
1109 | printk(KERN_WARNING "CIFS: netbiosname longer than 15 truncated.\n"); |
1110 | } | |
1111 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1112 | /* servernetbiosname specified override *SMBSERVER */ | |
1113 | if (!value || !*value || (*value == ' ')) { | |
1114 | cFYI(1,("empty server netbiosname specified")); | |
1115 | } else { | |
1116 | /* last byte, type, is 0x20 for servr type */ | |
1117 | memset(vol->target_rfc1001_name,0x20,16); | |
1118 | ||
1119 | for(i=0;i<15;i++) { | |
1120 | /* BB are there cases in which a comma can be | |
1121 | valid in this workstation netbios name (and need | |
1122 | special handling)? */ | |
1123 | ||
1124 | /* user or mount helper must uppercase netbiosname */ | |
1125 | if (value[i]==0) | |
1126 | break; | |
1127 | else | |
1128 | vol->target_rfc1001_name[i] = value[i]; | |
1129 | } | |
1130 | /* The string has 16th byte zero still from | |
1131 | set at top of the function */ | |
4523cc30 | 1132 | if ((i==15) && (value[i] != 0)) |
a10faeb2 | 1133 | printk(KERN_WARNING "CIFS: server netbiosname longer than 15 truncated.\n"); |
1da177e4 LT |
1134 | } |
1135 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1136 | /* ignore */ | |
1137 | } else if (strnicmp(data, "version", 3) == 0) { | |
1138 | /* ignore */ | |
1139 | } else if (strnicmp(data, "guest",5) == 0) { | |
1140 | /* ignore */ | |
1141 | } else if (strnicmp(data, "rw", 2) == 0) { | |
1142 | vol->rw = TRUE; | |
1143 | } else if ((strnicmp(data, "suid", 4) == 0) || | |
1144 | (strnicmp(data, "nosuid", 6) == 0) || | |
1145 | (strnicmp(data, "exec", 4) == 0) || | |
1146 | (strnicmp(data, "noexec", 6) == 0) || | |
1147 | (strnicmp(data, "nodev", 5) == 0) || | |
1148 | (strnicmp(data, "noauto", 6) == 0) || | |
1149 | (strnicmp(data, "dev", 3) == 0)) { | |
1150 | /* The mount tool or mount.cifs helper (if present) | |
1151 | uses these opts to set flags, and the flags are read | |
1152 | by the kernel vfs layer before we get here (ie | |
1153 | before read super) so there is no point trying to | |
1154 | parse these options again and set anything and it | |
1155 | is ok to just ignore them */ | |
1156 | continue; | |
1157 | } else if (strnicmp(data, "ro", 2) == 0) { | |
1158 | vol->rw = FALSE; | |
1159 | } else if (strnicmp(data, "hard", 4) == 0) { | |
1160 | vol->retry = 1; | |
1161 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1162 | vol->retry = 0; | |
1163 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1164 | vol->noperm = 0; | |
1165 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1166 | vol->noperm = 1; | |
6a0b4824 SF |
1167 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1168 | vol->remap = 1; | |
1169 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1170 | vol->remap = 0; | |
d7245c2c SF |
1171 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1172 | vol->sfu_emul = 1; | |
1173 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1174 | vol->sfu_emul = 0; | |
ac67055e JA |
1175 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1176 | vol->posix_paths = 1; | |
1177 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1178 | vol->posix_paths = 0; | |
a10faeb2 SF |
1179 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
1180 | (strnicmp(data, "ignorecase", 10) == 0)) { | |
c46fa8ac SF |
1181 | vol->nocase = 1; |
1182 | } else if (strnicmp(data, "brl", 3) == 0) { | |
1183 | vol->nobrl = 0; | |
cb8be640 | 1184 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1185 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1186 | vol->nobrl = 1; |
d3485d37 SF |
1187 | /* turn off mandatory locking in mode |
1188 | if remote locking is turned off since the | |
1189 | local vfs will do advisory */ | |
1190 | if(vol->file_mode == (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
1191 | vol->file_mode = S_IALLUGO; | |
1da177e4 LT |
1192 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1193 | vol->setuids = 1; | |
1194 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1195 | vol->setuids = 0; | |
1196 | } else if (strnicmp(data, "nohard", 6) == 0) { | |
1197 | vol->retry = 0; | |
1198 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1199 | vol->retry = 1; | |
1200 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1201 | vol->intr = 0; | |
1202 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1203 | vol->intr = 1; | |
1204 | } else if (strnicmp(data, "serverino",7) == 0) { | |
1205 | vol->server_ino = 1; | |
1206 | } else if (strnicmp(data, "noserverino",9) == 0) { | |
1207 | vol->server_ino = 0; | |
0a4b92c0 SF |
1208 | } else if (strnicmp(data, "cifsacl",7) == 0) { |
1209 | vol->cifs_acl = 1; | |
1210 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1211 | vol->cifs_acl = 0; | |
1da177e4 LT |
1212 | } else if (strnicmp(data, "acl",3) == 0) { |
1213 | vol->no_psx_acl = 0; | |
1214 | } else if (strnicmp(data, "noacl",5) == 0) { | |
1215 | vol->no_psx_acl = 1; | |
750d1151 SF |
1216 | } else if (strnicmp(data, "sign",4) == 0) { |
1217 | vol->secFlg |= CIFSSEC_MUST_SIGN; | |
1218 | /* } else if (strnicmp(data, "seal",4) == 0) { | |
1219 | vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
1da177e4 LT |
1220 | } else if (strnicmp(data, "direct",6) == 0) { |
1221 | vol->direct_io = 1; | |
1222 | } else if (strnicmp(data, "forcedirectio",13) == 0) { | |
1223 | vol->direct_io = 1; | |
1224 | } else if (strnicmp(data, "in6_addr",8) == 0) { | |
1225 | if (!value || !*value) { | |
1226 | vol->in6_addr = NULL; | |
1227 | } else if (strnlen(value, 49) == 48) { | |
1228 | vol->in6_addr = value; | |
1229 | } else { | |
1230 | printk(KERN_WARNING "CIFS: ip v6 address not 48 characters long\n"); | |
1231 | return 1; | |
1232 | } | |
1233 | } else if (strnicmp(data, "noac", 4) == 0) { | |
1234 | printk(KERN_WARNING "CIFS: Mount option noac not supported. Instead set /proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1235 | } else | |
1236 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n",data); | |
1237 | } | |
1238 | if (vol->UNC == NULL) { | |
4523cc30 | 1239 | if (devname == NULL) { |
1da177e4 LT |
1240 | printk(KERN_WARNING "CIFS: Missing UNC name for mount target\n"); |
1241 | return 1; | |
1242 | } | |
1243 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
1244 | vol->UNC = kmalloc(temp_len+1,GFP_KERNEL); | |
4523cc30 | 1245 | if (vol->UNC == NULL) |
1da177e4 LT |
1246 | return 1; |
1247 | strcpy(vol->UNC,devname); | |
1248 | if (strncmp(vol->UNC, "//", 2) == 0) { | |
1249 | vol->UNC[0] = '\\'; | |
1250 | vol->UNC[1] = '\\'; | |
1251 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
1252 | printk(KERN_WARNING "CIFS: UNC Path does not begin with // or \\\\ \n"); | |
1253 | return 1; | |
1254 | } | |
1255 | } else { | |
1256 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1257 | return 1; | |
1258 | } | |
1259 | } | |
1260 | if(vol->UNCip == NULL) | |
1261 | vol->UNCip = &vol->UNC[2]; | |
1262 | ||
1263 | return 0; | |
1264 | } | |
1265 | ||
1266 | static struct cifsSesInfo * | |
1267 | cifs_find_tcp_session(struct in_addr * target_ip_addr, | |
1268 | struct in6_addr *target_ip6_addr, | |
1269 | char *userName, struct TCP_Server_Info **psrvTcp) | |
1270 | { | |
1271 | struct list_head *tmp; | |
1272 | struct cifsSesInfo *ses; | |
1273 | *psrvTcp = NULL; | |
1274 | read_lock(&GlobalSMBSeslock); | |
1275 | ||
1276 | list_for_each(tmp, &GlobalSMBSessionList) { | |
1277 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
1278 | if (ses->server) { | |
1279 | if((target_ip_addr && | |
1280 | (ses->server->addr.sockAddr.sin_addr.s_addr | |
1281 | == target_ip_addr->s_addr)) || (target_ip6_addr | |
1282 | && memcmp(&ses->server->addr.sockAddr6.sin6_addr, | |
1283 | target_ip6_addr,sizeof(*target_ip6_addr)))){ | |
1284 | /* BB lock server and tcp session and increment use count here?? */ | |
1285 | *psrvTcp = ses->server; /* found a match on the TCP session */ | |
1286 | /* BB check if reconnection needed */ | |
1287 | if (strncmp | |
1288 | (ses->userName, userName, | |
1289 | MAX_USERNAME_SIZE) == 0){ | |
1290 | read_unlock(&GlobalSMBSeslock); | |
1291 | return ses; /* found exact match on both tcp and SMB sessions */ | |
1292 | } | |
1293 | } | |
1294 | } | |
1295 | /* else tcp and smb sessions need reconnection */ | |
1296 | } | |
1297 | read_unlock(&GlobalSMBSeslock); | |
1298 | return NULL; | |
1299 | } | |
1300 | ||
1301 | static struct cifsTconInfo * | |
1302 | find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) | |
1303 | { | |
1304 | struct list_head *tmp; | |
1305 | struct cifsTconInfo *tcon; | |
1306 | ||
1307 | read_lock(&GlobalSMBSeslock); | |
1308 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
e466e487 | 1309 | cFYI(1, ("Next tcon")); |
1da177e4 LT |
1310 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); |
1311 | if (tcon->ses) { | |
1312 | if (tcon->ses->server) { | |
1313 | cFYI(1, | |
e466e487 | 1314 | ("old ip addr: %x == new ip %x ?", |
1da177e4 LT |
1315 | tcon->ses->server->addr.sockAddr.sin_addr. |
1316 | s_addr, new_target_ip_addr)); | |
1317 | if (tcon->ses->server->addr.sockAddr.sin_addr. | |
1318 | s_addr == new_target_ip_addr) { | |
e466e487 | 1319 | /* BB lock tcon, server and tcp session and increment use count here? */ |
1da177e4 LT |
1320 | /* found a match on the TCP session */ |
1321 | /* BB check if reconnection needed */ | |
e466e487 | 1322 | cFYI(1,("IP match, old UNC: %s new: %s", |
1da177e4 LT |
1323 | tcon->treeName, uncName)); |
1324 | if (strncmp | |
1325 | (tcon->treeName, uncName, | |
1326 | MAX_TREE_SIZE) == 0) { | |
1327 | cFYI(1, | |
e466e487 | 1328 | ("and old usr: %s new: %s", |
1da177e4 LT |
1329 | tcon->treeName, uncName)); |
1330 | if (strncmp | |
1331 | (tcon->ses->userName, | |
1332 | userName, | |
1333 | MAX_USERNAME_SIZE) == 0) { | |
1334 | read_unlock(&GlobalSMBSeslock); | |
e466e487 SF |
1335 | /* matched smb session |
1336 | (user name */ | |
1337 | return tcon; | |
1da177e4 LT |
1338 | } |
1339 | } | |
1340 | } | |
1341 | } | |
1342 | } | |
1343 | } | |
1344 | read_unlock(&GlobalSMBSeslock); | |
1345 | return NULL; | |
1346 | } | |
1347 | ||
1348 | int | |
1349 | connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo, | |
737b758c SF |
1350 | const char *old_path, const struct nls_table *nls_codepage, |
1351 | int remap) | |
1da177e4 LT |
1352 | { |
1353 | unsigned char *referrals = NULL; | |
1354 | unsigned int num_referrals; | |
1355 | int rc = 0; | |
1356 | ||
1357 | rc = get_dfs_path(xid, pSesInfo,old_path, nls_codepage, | |
737b758c | 1358 | &num_referrals, &referrals, remap); |
1da177e4 LT |
1359 | |
1360 | /* BB Add in code to: if valid refrl, if not ip address contact | |
1361 | the helper that resolves tcp names, mount to it, try to | |
1362 | tcon to it unmount it if fail */ | |
1363 | ||
f99d49ad | 1364 | kfree(referrals); |
1da177e4 LT |
1365 | |
1366 | return rc; | |
1367 | } | |
1368 | ||
1369 | int | |
1370 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, | |
1371 | const char *old_path, const struct nls_table *nls_codepage, | |
737b758c SF |
1372 | unsigned int *pnum_referrals, |
1373 | unsigned char ** preferrals, int remap) | |
1da177e4 LT |
1374 | { |
1375 | char *temp_unc; | |
1376 | int rc = 0; | |
1377 | ||
1378 | *pnum_referrals = 0; | |
1379 | ||
1380 | if (pSesInfo->ipc_tid == 0) { | |
1381 | temp_unc = kmalloc(2 /* for slashes */ + | |
1382 | strnlen(pSesInfo->serverName,SERVER_NAME_LEN_WITH_NULL * 2) | |
1383 | + 1 + 4 /* slash IPC$ */ + 2, | |
1384 | GFP_KERNEL); | |
1385 | if (temp_unc == NULL) | |
1386 | return -ENOMEM; | |
1387 | temp_unc[0] = '\\'; | |
1388 | temp_unc[1] = '\\'; | |
1389 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1390 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1391 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1392 | cFYI(1, | |
1393 | ("CIFS Tcon rc = %d ipc_tid = %d", rc,pSesInfo->ipc_tid)); | |
1394 | kfree(temp_unc); | |
1395 | } | |
1396 | if (rc == 0) | |
1397 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, | |
737b758c | 1398 | pnum_referrals, nls_codepage, remap); |
1da177e4 LT |
1399 | |
1400 | return rc; | |
1401 | } | |
1402 | ||
1403 | /* See RFC1001 section 14 on representation of Netbios names */ | |
1404 | static void rfc1002mangle(char * target,char * source, unsigned int length) | |
1405 | { | |
1406 | unsigned int i,j; | |
1407 | ||
1408 | for(i=0,j=0;i<(length);i++) { | |
1409 | /* mask a nibble at a time and encode */ | |
1410 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1411 | target[j+1] = 'A' + (0x0F & source[i]); | |
1412 | j+=2; | |
1413 | } | |
1414 | ||
1415 | } | |
1416 | ||
1417 | ||
1418 | static int | |
1419 | ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, | |
a10faeb2 | 1420 | char * netbios_name, char * target_name) |
1da177e4 LT |
1421 | { |
1422 | int rc = 0; | |
1423 | int connected = 0; | |
1424 | __be16 orig_port = 0; | |
1425 | ||
1426 | if(*csocket == NULL) { | |
1427 | rc = sock_create_kern(PF_INET, SOCK_STREAM, IPPROTO_TCP, csocket); | |
1428 | if (rc < 0) { | |
1429 | cERROR(1, ("Error %d creating socket",rc)); | |
1430 | *csocket = NULL; | |
1431 | return rc; | |
1432 | } else { | |
1433 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1434 | cFYI(1,("Socket created")); | |
1435 | (*csocket)->sk->sk_allocation = GFP_NOFS; | |
1436 | } | |
1437 | } | |
1438 | ||
1439 | psin_server->sin_family = AF_INET; | |
1440 | if(psin_server->sin_port) { /* user overrode default port */ | |
1441 | rc = (*csocket)->ops->connect(*csocket, | |
1442 | (struct sockaddr *) psin_server, | |
1443 | sizeof (struct sockaddr_in),0); | |
1444 | if (rc >= 0) | |
1445 | connected = 1; | |
1446 | } | |
1447 | ||
1448 | if(!connected) { | |
1449 | /* save original port so we can retry user specified port | |
1450 | later if fall back ports fail this time */ | |
1451 | orig_port = psin_server->sin_port; | |
1452 | ||
1453 | /* do not retry on the same port we just failed on */ | |
1454 | if(psin_server->sin_port != htons(CIFS_PORT)) { | |
1455 | psin_server->sin_port = htons(CIFS_PORT); | |
1456 | ||
1457 | rc = (*csocket)->ops->connect(*csocket, | |
1458 | (struct sockaddr *) psin_server, | |
1459 | sizeof (struct sockaddr_in),0); | |
1460 | if (rc >= 0) | |
1461 | connected = 1; | |
1462 | } | |
1463 | } | |
1464 | if (!connected) { | |
1465 | psin_server->sin_port = htons(RFC1001_PORT); | |
1466 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
1467 | psin_server, sizeof (struct sockaddr_in),0); | |
1468 | if (rc >= 0) | |
1469 | connected = 1; | |
1470 | } | |
1471 | ||
1472 | /* give up here - unless we want to retry on different | |
1473 | protocol families some day */ | |
1474 | if (!connected) { | |
1475 | if(orig_port) | |
1476 | psin_server->sin_port = orig_port; | |
1477 | cFYI(1,("Error %d connecting to server via ipv4",rc)); | |
1478 | sock_release(*csocket); | |
1479 | *csocket = NULL; | |
1480 | return rc; | |
1481 | } | |
1482 | /* Eventually check for other socket options to change from | |
1483 | the default. sock_setsockopt not used because it expects | |
1484 | user space buffer */ | |
b387eaeb SF |
1485 | cFYI(1,("sndbuf %d rcvbuf %d rcvtimeo 0x%lx",(*csocket)->sk->sk_sndbuf, |
1486 | (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo)); | |
1da177e4 | 1487 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; |
b387eaeb SF |
1488 | /* make the bufsizes depend on wsize/rsize and max requests */ |
1489 | if((*csocket)->sk->sk_sndbuf < (200 * 1024)) | |
1490 | (*csocket)->sk->sk_sndbuf = 200 * 1024; | |
1491 | if((*csocket)->sk->sk_rcvbuf < (140 * 1024)) | |
1492 | (*csocket)->sk->sk_rcvbuf = 140 * 1024; | |
1da177e4 LT |
1493 | |
1494 | /* send RFC1001 sessinit */ | |
1da177e4 LT |
1495 | if(psin_server->sin_port == htons(RFC1001_PORT)) { |
1496 | /* some servers require RFC1001 sessinit before sending | |
1497 | negprot - BB check reconnection in case where second | |
1498 | sessinit is sent but no second negprot */ | |
1499 | struct rfc1002_session_packet * ses_init_buf; | |
1500 | struct smb_hdr * smb_buf; | |
e915fc49 | 1501 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), GFP_KERNEL); |
1da177e4 LT |
1502 | if(ses_init_buf) { |
1503 | ses_init_buf->trailer.session_req.called_len = 32; | |
a10faeb2 SF |
1504 | if(target_name && (target_name[0] != 0)) { |
1505 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
1506 | target_name, 16); | |
1507 | } else { | |
1508 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
1509 | DEFAULT_CIFS_CALLED_NAME,16); | |
1510 | } | |
1511 | ||
1da177e4 LT |
1512 | ses_init_buf->trailer.session_req.calling_len = 32; |
1513 | /* calling name ends in null (byte 16) from old smb | |
1514 | convention. */ | |
1515 | if(netbios_name && (netbios_name[0] !=0)) { | |
1516 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
1517 | netbios_name,16); | |
1518 | } else { | |
1519 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
1520 | "LINUX_CIFS_CLNT",16); | |
1521 | } | |
1522 | ses_init_buf->trailer.session_req.scope1 = 0; | |
1523 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1524 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1525 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1526 | smb_buf->smb_buf_length = 0x81000044; | |
1527 | rc = smb_send(*csocket, smb_buf, 0x44, | |
1528 | (struct sockaddr *)psin_server); | |
1529 | kfree(ses_init_buf); | |
083d3a2c SF |
1530 | msleep(1); /* RFC1001 layer in at least one server |
1531 | requires very short break before negprot | |
1532 | presumably because not expecting negprot | |
1533 | to follow so fast. This is a simple | |
1534 | solution that works without | |
1535 | complicating the code and causes no | |
1536 | significant slowing down on mount | |
1537 | for everyone else */ | |
1da177e4 LT |
1538 | } |
1539 | /* else the negprot may still work without this | |
1540 | even though malloc failed */ | |
1541 | ||
1542 | } | |
1543 | ||
1544 | return rc; | |
1545 | } | |
1546 | ||
1547 | static int | |
1548 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket) | |
1549 | { | |
1550 | int rc = 0; | |
1551 | int connected = 0; | |
1552 | __be16 orig_port = 0; | |
1553 | ||
1554 | if(*csocket == NULL) { | |
1555 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, IPPROTO_TCP, csocket); | |
1556 | if (rc < 0) { | |
1557 | cERROR(1, ("Error %d creating ipv6 socket",rc)); | |
1558 | *csocket = NULL; | |
1559 | return rc; | |
1560 | } else { | |
1561 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1562 | cFYI(1,("ipv6 Socket created")); | |
1563 | (*csocket)->sk->sk_allocation = GFP_NOFS; | |
1564 | } | |
1565 | } | |
1566 | ||
1567 | psin_server->sin6_family = AF_INET6; | |
1568 | ||
1569 | if(psin_server->sin6_port) { /* user overrode default port */ | |
1570 | rc = (*csocket)->ops->connect(*csocket, | |
1571 | (struct sockaddr *) psin_server, | |
1572 | sizeof (struct sockaddr_in6),0); | |
1573 | if (rc >= 0) | |
1574 | connected = 1; | |
1575 | } | |
1576 | ||
1577 | if(!connected) { | |
1578 | /* save original port so we can retry user specified port | |
1579 | later if fall back ports fail this time */ | |
1580 | ||
1581 | orig_port = psin_server->sin6_port; | |
1582 | /* do not retry on the same port we just failed on */ | |
1583 | if(psin_server->sin6_port != htons(CIFS_PORT)) { | |
1584 | psin_server->sin6_port = htons(CIFS_PORT); | |
1585 | ||
1586 | rc = (*csocket)->ops->connect(*csocket, | |
1587 | (struct sockaddr *) psin_server, | |
1588 | sizeof (struct sockaddr_in6),0); | |
1589 | if (rc >= 0) | |
1590 | connected = 1; | |
1591 | } | |
1592 | } | |
1593 | if (!connected) { | |
1594 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1595 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
1596 | psin_server, sizeof (struct sockaddr_in6),0); | |
1597 | if (rc >= 0) | |
1598 | connected = 1; | |
1599 | } | |
1600 | ||
1601 | /* give up here - unless we want to retry on different | |
1602 | protocol families some day */ | |
1603 | if (!connected) { | |
1604 | if(orig_port) | |
1605 | psin_server->sin6_port = orig_port; | |
1606 | cFYI(1,("Error %d connecting to server via ipv6",rc)); | |
1607 | sock_release(*csocket); | |
1608 | *csocket = NULL; | |
1609 | return rc; | |
1610 | } | |
1611 | /* Eventually check for other socket options to change from | |
1612 | the default. sock_setsockopt not used because it expects | |
1613 | user space buffer */ | |
1614 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
1615 | ||
1616 | return rc; | |
1617 | } | |
1618 | ||
8af18971 SF |
1619 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo * tcon, |
1620 | struct super_block * sb, struct smb_vol * vol_info) | |
1621 | { | |
1622 | /* if we are reconnecting then should we check to see if | |
1623 | * any requested capabilities changed locally e.g. via | |
1624 | * remount but we can not do much about it here | |
1625 | * if they have (even if we could detect it by the following) | |
1626 | * Perhaps we could add a backpointer to array of sb from tcon | |
1627 | * or if we change to make all sb to same share the same | |
1628 | * sb as NFS - then we only have one backpointer to sb. | |
1629 | * What if we wanted to mount the server share twice once with | |
1630 | * and once without posixacls or posix paths? */ | |
1631 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
1632 | ||
1633 | ||
1634 | if(!CIFSSMBQFSUnixInfo(xid, tcon)) { | |
1635 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
1636 | ||
1637 | /* check for reconnect case in which we do not | |
1638 | want to change the mount behavior if we can avoid it */ | |
1639 | if(vol_info == NULL) { | |
1640 | /* turn off POSIX ACL and PATHNAMES if not set | |
1641 | originally at mount time */ | |
1642 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) | |
1643 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
1644 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) | |
1645 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; | |
1646 | ||
1647 | ||
1648 | ||
1649 | ||
1650 | } | |
1651 | ||
1652 | cap &= CIFS_UNIX_CAP_MASK; | |
1653 | if(vol_info && vol_info->no_psx_acl) | |
1654 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
1655 | else if(CIFS_UNIX_POSIX_ACL_CAP & cap) { | |
1656 | cFYI(1,("negotiated posix acl support")); | |
1657 | if(sb) | |
1658 | sb->s_flags |= MS_POSIXACL; | |
1659 | } | |
1660 | ||
1661 | if(vol_info && vol_info->posix_paths == 0) | |
1662 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; | |
1663 | else if(cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { | |
1664 | cFYI(1,("negotiate posix pathnames")); | |
1665 | if(sb) | |
1666 | CIFS_SB(sb)->mnt_cifs_flags |= | |
1667 | CIFS_MOUNT_POSIX_PATHS; | |
1668 | } | |
984acfe1 SF |
1669 | |
1670 | /* We might be setting the path sep back to a different | |
1671 | form if we are reconnecting and the server switched its | |
1672 | posix path capability for this share */ | |
1673 | if(CIFS_SB(sb)->prepathlen > 0) | |
1674 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); | |
1675 | ||
8af18971 SF |
1676 | cFYI(1,("Negotiate caps 0x%x",(int)cap)); |
1677 | #ifdef CONFIG_CIFS_DEBUG2 | |
1678 | if(cap & CIFS_UNIX_FCNTL_CAP) | |
1679 | cFYI(1,("FCNTL cap")); | |
1680 | if(cap & CIFS_UNIX_EXTATTR_CAP) | |
1681 | cFYI(1,("EXTATTR cap")); | |
1682 | if(cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) | |
1683 | cFYI(1,("POSIX path cap")); | |
1684 | if(cap & CIFS_UNIX_XATTR_CAP) | |
1685 | cFYI(1,("XATTR cap")); | |
1686 | if(cap & CIFS_UNIX_POSIX_ACL_CAP) | |
1687 | cFYI(1,("POSIX ACL cap")); | |
1688 | #endif /* CIFS_DEBUG2 */ | |
1689 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
1690 | cFYI(1,("setting capabilities failed")); | |
1691 | } | |
1692 | } | |
1693 | } | |
1694 | ||
1da177e4 LT |
1695 | int |
1696 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1697 | char *mount_data, const char *devname) | |
1698 | { | |
1699 | int rc = 0; | |
1700 | int xid; | |
1701 | int address_type = AF_INET; | |
1702 | struct socket *csocket = NULL; | |
1703 | struct sockaddr_in sin_server; | |
1704 | struct sockaddr_in6 sin_server6; | |
1705 | struct smb_vol volume_info; | |
1706 | struct cifsSesInfo *pSesInfo = NULL; | |
1707 | struct cifsSesInfo *existingCifsSes = NULL; | |
1708 | struct cifsTconInfo *tcon = NULL; | |
1709 | struct TCP_Server_Info *srvTcp = NULL; | |
1710 | ||
1711 | xid = GetXid(); | |
1712 | ||
1713 | /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ | |
1714 | ||
1715 | memset(&volume_info,0,sizeof(struct smb_vol)); | |
1716 | if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { | |
f99d49ad JJ |
1717 | kfree(volume_info.UNC); |
1718 | kfree(volume_info.password); | |
2fe87f02 | 1719 | kfree(volume_info.prepath); |
1da177e4 LT |
1720 | FreeXid(xid); |
1721 | return -EINVAL; | |
1722 | } | |
1723 | ||
1724 | if (volume_info.username) { | |
1725 | /* BB fixme parse for domain name here */ | |
1726 | cFYI(1, ("Username: %s ", volume_info.username)); | |
1727 | ||
4b952a9b SF |
1728 | } else if (volume_info.nullauth) { |
1729 | cFYI(1,("null user")); | |
1da177e4 | 1730 | } else { |
bf820679 | 1731 | cifserror("No username specified"); |
1da177e4 LT |
1732 | /* In userspace mount helper we can get user name from alternate |
1733 | locations such as env variables and files on disk */ | |
f99d49ad JJ |
1734 | kfree(volume_info.UNC); |
1735 | kfree(volume_info.password); | |
2fe87f02 | 1736 | kfree(volume_info.prepath); |
1da177e4 LT |
1737 | FreeXid(xid); |
1738 | return -EINVAL; | |
1739 | } | |
1740 | ||
1741 | if (volume_info.UNCip && volume_info.UNC) { | |
1742 | rc = cifs_inet_pton(AF_INET, volume_info.UNCip,&sin_server.sin_addr.s_addr); | |
1743 | ||
1744 | if(rc <= 0) { | |
1745 | /* not ipv4 address, try ipv6 */ | |
1746 | rc = cifs_inet_pton(AF_INET6,volume_info.UNCip,&sin_server6.sin6_addr.in6_u); | |
1747 | if(rc > 0) | |
1748 | address_type = AF_INET6; | |
1749 | } else { | |
1750 | address_type = AF_INET; | |
1751 | } | |
1752 | ||
1753 | if(rc <= 0) { | |
1754 | /* we failed translating address */ | |
f99d49ad JJ |
1755 | kfree(volume_info.UNC); |
1756 | kfree(volume_info.password); | |
2fe87f02 | 1757 | kfree(volume_info.prepath); |
1da177e4 LT |
1758 | FreeXid(xid); |
1759 | return -EINVAL; | |
1760 | } | |
1761 | ||
1762 | cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); | |
1763 | /* success */ | |
1764 | rc = 0; | |
1765 | } else if (volume_info.UNCip){ | |
1766 | /* BB using ip addr as server name connect to the DFS root below */ | |
1767 | cERROR(1,("Connecting to DFS root not implemented yet")); | |
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 | } else /* which servers DFS root would we conect to */ { | |
1774 | cERROR(1, | |
bf820679 | 1775 | ("CIFS mount error: No UNC path (e.g. -o unc=//192.168.1.100/public) specified")); |
f99d49ad JJ |
1776 | kfree(volume_info.UNC); |
1777 | kfree(volume_info.password); | |
2fe87f02 | 1778 | kfree(volume_info.prepath); |
1da177e4 LT |
1779 | FreeXid(xid); |
1780 | return -EINVAL; | |
1781 | } | |
1782 | ||
1783 | /* this is needed for ASCII cp to Unicode converts */ | |
1784 | if(volume_info.iocharset == NULL) { | |
1785 | cifs_sb->local_nls = load_nls_default(); | |
1786 | /* load_nls_default can not return null */ | |
1787 | } else { | |
1788 | cifs_sb->local_nls = load_nls(volume_info.iocharset); | |
1789 | if(cifs_sb->local_nls == NULL) { | |
1790 | cERROR(1,("CIFS mount error: iocharset %s not found",volume_info.iocharset)); | |
f99d49ad JJ |
1791 | kfree(volume_info.UNC); |
1792 | kfree(volume_info.password); | |
2fe87f02 | 1793 | kfree(volume_info.prepath); |
1da177e4 LT |
1794 | FreeXid(xid); |
1795 | return -ELIBACC; | |
1796 | } | |
1797 | } | |
1798 | ||
1799 | if(address_type == AF_INET) | |
1800 | existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr, | |
1801 | NULL /* no ipv6 addr */, | |
1802 | volume_info.username, &srvTcp); | |
5858ae44 SF |
1803 | else if(address_type == AF_INET6) { |
1804 | cFYI(1,("looking for ipv6 address")); | |
1da177e4 LT |
1805 | existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */, |
1806 | &sin_server6.sin6_addr, | |
1807 | volume_info.username, &srvTcp); | |
5858ae44 | 1808 | } else { |
f99d49ad JJ |
1809 | kfree(volume_info.UNC); |
1810 | kfree(volume_info.password); | |
2fe87f02 | 1811 | kfree(volume_info.prepath); |
1da177e4 LT |
1812 | FreeXid(xid); |
1813 | return -EINVAL; | |
1814 | } | |
1815 | ||
1816 | ||
1817 | if (srvTcp) { | |
bf820679 | 1818 | cFYI(1, ("Existing tcp session with server found")); |
1da177e4 | 1819 | } else { /* create socket */ |
4523cc30 | 1820 | if (volume_info.port) |
1da177e4 LT |
1821 | sin_server.sin_port = htons(volume_info.port); |
1822 | else | |
1823 | sin_server.sin_port = 0; | |
5858ae44 SF |
1824 | if (address_type == AF_INET6) { |
1825 | cFYI(1,("attempting ipv6 connect")); | |
1826 | /* BB should we allow ipv6 on port 139? */ | |
1827 | /* other OS never observed in Wild doing 139 with v6 */ | |
1828 | rc = ipv6_connect(&sin_server6,&csocket); | |
1829 | } else | |
1830 | rc = ipv4_connect(&sin_server,&csocket, | |
a10faeb2 SF |
1831 | volume_info.source_rfc1001_name, |
1832 | volume_info.target_rfc1001_name); | |
1da177e4 LT |
1833 | if (rc < 0) { |
1834 | cERROR(1, | |
5858ae44 | 1835 | ("Error connecting to IPv4 socket. Aborting operation")); |
4523cc30 | 1836 | if (csocket != NULL) |
1da177e4 | 1837 | sock_release(csocket); |
f99d49ad JJ |
1838 | kfree(volume_info.UNC); |
1839 | kfree(volume_info.password); | |
2fe87f02 | 1840 | kfree(volume_info.prepath); |
1da177e4 LT |
1841 | FreeXid(xid); |
1842 | return rc; | |
1843 | } | |
1844 | ||
1845 | srvTcp = kmalloc(sizeof (struct TCP_Server_Info), GFP_KERNEL); | |
1846 | if (srvTcp == NULL) { | |
1847 | rc = -ENOMEM; | |
1848 | sock_release(csocket); | |
f99d49ad JJ |
1849 | kfree(volume_info.UNC); |
1850 | kfree(volume_info.password); | |
2fe87f02 | 1851 | kfree(volume_info.prepath); |
1da177e4 LT |
1852 | FreeXid(xid); |
1853 | return rc; | |
1854 | } else { | |
1855 | memset(srvTcp, 0, sizeof (struct TCP_Server_Info)); | |
1856 | memcpy(&srvTcp->addr.sockAddr, &sin_server, sizeof (struct sockaddr_in)); | |
1857 | atomic_set(&srvTcp->inFlight,0); | |
1858 | /* BB Add code for ipv6 case too */ | |
1859 | srvTcp->ssocket = csocket; | |
1860 | srvTcp->protocolType = IPV4; | |
1861 | init_waitqueue_head(&srvTcp->response_q); | |
1862 | init_waitqueue_head(&srvTcp->request_q); | |
1863 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
1864 | /* at this point we are the only ones with the pointer | |
1865 | to the struct since the kernel thread not created yet | |
1866 | so no need to spinlock this init of tcpStatus */ | |
1867 | srvTcp->tcpStatus = CifsNew; | |
1868 | init_MUTEX(&srvTcp->tcpSem); | |
aaf737ad | 1869 | srvTcp->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, srvTcp, "cifsd"); |
4523cc30 | 1870 | if ( IS_ERR(srvTcp->tsk) ) { |
aaf737ad IM |
1871 | rc = PTR_ERR(srvTcp->tsk); |
1872 | cERROR(1,("error %d create cifsd thread", rc)); | |
1873 | srvTcp->tsk = NULL; | |
1da177e4 | 1874 | sock_release(csocket); |
f99d49ad JJ |
1875 | kfree(volume_info.UNC); |
1876 | kfree(volume_info.password); | |
2fe87f02 | 1877 | kfree(volume_info.prepath); |
1da177e4 LT |
1878 | FreeXid(xid); |
1879 | return rc; | |
f191401f SF |
1880 | } |
1881 | wait_for_completion(&cifsd_complete); | |
1882 | rc = 0; | |
1da177e4 | 1883 | memcpy(srvTcp->workstation_RFC1001_name, volume_info.source_rfc1001_name,16); |
a10faeb2 | 1884 | memcpy(srvTcp->server_RFC1001_name, volume_info.target_rfc1001_name,16); |
ad009ac9 | 1885 | srvTcp->sequence_number = 0; |
1da177e4 LT |
1886 | } |
1887 | } | |
1888 | ||
1889 | if (existingCifsSes) { | |
1890 | pSesInfo = existingCifsSes; | |
bf820679 | 1891 | cFYI(1, ("Existing smb sess found")); |
f99d49ad | 1892 | kfree(volume_info.password); |
1da177e4 LT |
1893 | /* volume_info.UNC freed at end of function */ |
1894 | } else if (!rc) { | |
bf820679 | 1895 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 LT |
1896 | pSesInfo = sesInfoAlloc(); |
1897 | if (pSesInfo == NULL) | |
1898 | rc = -ENOMEM; | |
1899 | else { | |
1900 | pSesInfo->server = srvTcp; | |
1901 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
1902 | NIPQUAD(sin_server.sin_addr.s_addr)); | |
1903 | } | |
1904 | ||
1905 | if (!rc){ | |
1906 | /* volume_info.password freed at unmount */ | |
1907 | if (volume_info.password) | |
1908 | pSesInfo->password = volume_info.password; | |
1909 | if (volume_info.username) | |
1910 | strncpy(pSesInfo->userName, | |
1911 | volume_info.username,MAX_USERNAME_SIZE); | |
3979877e SF |
1912 | if (volume_info.domainname) { |
1913 | int len = strlen(volume_info.domainname); | |
1914 | pSesInfo->domainName = | |
1915 | kmalloc(len + 1, GFP_KERNEL); | |
4523cc30 | 1916 | if (pSesInfo->domainName) |
3979877e SF |
1917 | strcpy(pSesInfo->domainName, |
1918 | volume_info.domainname); | |
1919 | } | |
1da177e4 | 1920 | pSesInfo->linux_uid = volume_info.linux_uid; |
750d1151 | 1921 | pSesInfo->overrideSecFlg = volume_info.secFlg; |
1da177e4 | 1922 | down(&pSesInfo->sesSem); |
189acaae | 1923 | /* BB FIXME need to pass vol->secFlgs BB */ |
1da177e4 LT |
1924 | rc = cifs_setup_session(xid,pSesInfo, cifs_sb->local_nls); |
1925 | up(&pSesInfo->sesSem); | |
4523cc30 | 1926 | if (!rc) |
1da177e4 LT |
1927 | atomic_inc(&srvTcp->socketUseCount); |
1928 | } else | |
f99d49ad | 1929 | kfree(volume_info.password); |
1da177e4 LT |
1930 | } |
1931 | ||
1932 | /* search for existing tcon to this server share */ | |
1933 | if (!rc) { | |
4523cc30 | 1934 | if (volume_info.rsize > CIFSMaxBufSize) { |
0ae0efad SF |
1935 | cERROR(1,("rsize %d too large, using MaxBufSize", |
1936 | volume_info.rsize)); | |
1937 | cifs_sb->rsize = CIFSMaxBufSize; | |
1938 | } else if((volume_info.rsize) && (volume_info.rsize <= CIFSMaxBufSize)) | |
1da177e4 | 1939 | cifs_sb->rsize = volume_info.rsize; |
0ae0efad SF |
1940 | else /* default */ |
1941 | cifs_sb->rsize = CIFSMaxBufSize; | |
1942 | ||
4523cc30 | 1943 | if (volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { |
0ae0efad SF |
1944 | cERROR(1,("wsize %d too large using 4096 instead", |
1945 | volume_info.wsize)); | |
1946 | cifs_sb->wsize = 4096; | |
4523cc30 | 1947 | } else if (volume_info.wsize) |
1da177e4 LT |
1948 | cifs_sb->wsize = volume_info.wsize; |
1949 | else | |
17cbbafe | 1950 | cifs_sb->wsize = |
1877c9ea SF |
1951 | min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE, |
1952 | 127*1024); | |
17cbbafe SF |
1953 | /* old default of CIFSMaxBufSize was too small now |
1954 | that SMB Write2 can send multiple pages in kvec. | |
1955 | RFC1001 does not describe what happens when frame | |
1956 | bigger than 128K is sent so use that as max in | |
1957 | conjunction with 52K kvec constraint on arch with 4K | |
1958 | page size */ | |
1959 | ||
4523cc30 | 1960 | if (cifs_sb->rsize < 2048) { |
6cec2aed SF |
1961 | cifs_sb->rsize = 2048; |
1962 | /* Windows ME may prefer this */ | |
1963 | cFYI(1,("readsize set to minimum 2048")); | |
1da177e4 | 1964 | } |
2fe87f02 SF |
1965 | /* calculate prepath */ |
1966 | cifs_sb->prepath = volume_info.prepath; | |
4523cc30 | 1967 | if (cifs_sb->prepath) { |
2fe87f02 SF |
1968 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); |
1969 | cifs_sb->prepath[0] = CIFS_DIR_SEP(cifs_sb); | |
1970 | volume_info.prepath = NULL; | |
1971 | } else | |
1972 | cifs_sb->prepathlen = 0; | |
1da177e4 LT |
1973 | cifs_sb->mnt_uid = volume_info.linux_uid; |
1974 | cifs_sb->mnt_gid = volume_info.linux_gid; | |
1975 | cifs_sb->mnt_file_mode = volume_info.file_mode; | |
1976 | cifs_sb->mnt_dir_mode = volume_info.dir_mode; | |
eeac8047 SF |
1977 | cFYI(1,("file mode: 0x%x dir mode: 0x%x", |
1978 | cifs_sb->mnt_file_mode,cifs_sb->mnt_dir_mode)); | |
1da177e4 | 1979 | |
4523cc30 | 1980 | if (volume_info.noperm) |
1da177e4 | 1981 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; |
4523cc30 | 1982 | if (volume_info.setuids) |
1da177e4 | 1983 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; |
4523cc30 | 1984 | if (volume_info.server_ino) |
1da177e4 | 1985 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; |
4523cc30 | 1986 | if (volume_info.remap) |
6a0b4824 | 1987 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; |
4523cc30 | 1988 | if (volume_info.no_xattr) |
1da177e4 | 1989 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; |
4523cc30 | 1990 | if (volume_info.sfu_emul) |
d7245c2c | 1991 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; |
4523cc30 | 1992 | if (volume_info.nobrl) |
c46fa8ac | 1993 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; |
4523cc30 | 1994 | if (volume_info.cifs_acl) |
0a4b92c0 | 1995 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; |
4523cc30 SF |
1996 | if (volume_info.override_uid) |
1997 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; | |
1998 | if (volume_info.override_gid) | |
1999 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; | |
2000 | if (volume_info.direct_io) { | |
c46fa8ac | 2001 | cFYI(1,("mounting share using direct i/o")); |
1da177e4 LT |
2002 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
2003 | } | |
2004 | ||
2005 | tcon = | |
2006 | find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, | |
2007 | volume_info.username); | |
2008 | if (tcon) { | |
bf820679 | 2009 | cFYI(1, ("Found match on UNC path")); |
1da177e4 LT |
2010 | /* we can have only one retry value for a connection |
2011 | to a share so for resources mounted more than once | |
2012 | to the same server share the last value passed in | |
2013 | for the retry flag is used */ | |
2014 | tcon->retry = volume_info.retry; | |
d3485d37 | 2015 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
2016 | } else { |
2017 | tcon = tconInfoAlloc(); | |
2018 | if (tcon == NULL) | |
2019 | rc = -ENOMEM; | |
2020 | else { | |
8af18971 SF |
2021 | /* check for null share name ie connecting to |
2022 | * dfs root */ | |
1da177e4 | 2023 | |
8af18971 SF |
2024 | /* BB check if this works for exactly length |
2025 | * three strings */ | |
1da177e4 LT |
2026 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) |
2027 | && (strchr(volume_info.UNC + 3, '/') == | |
2028 | NULL)) { | |
737b758c | 2029 | rc = connect_to_dfs_path(xid, pSesInfo, |
8af18971 SF |
2030 | "", cifs_sb->local_nls, |
2031 | cifs_sb->mnt_cifs_flags & | |
2032 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
f99d49ad | 2033 | kfree(volume_info.UNC); |
1da177e4 LT |
2034 | FreeXid(xid); |
2035 | return -ENODEV; | |
2036 | } else { | |
8af18971 SF |
2037 | /* BB Do we need to wrap sesSem around |
2038 | * this TCon call and Unix SetFS as | |
2039 | * we do on SessSetup and reconnect? */ | |
1da177e4 LT |
2040 | rc = CIFSTCon(xid, pSesInfo, |
2041 | volume_info.UNC, | |
2042 | tcon, cifs_sb->local_nls); | |
2043 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
2044 | } | |
2045 | if (!rc) { | |
2046 | atomic_inc(&pSesInfo->inUse); | |
2047 | tcon->retry = volume_info.retry; | |
d3485d37 | 2048 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
2049 | } |
2050 | } | |
2051 | } | |
2052 | } | |
4523cc30 | 2053 | if (pSesInfo) { |
1da177e4 LT |
2054 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
2055 | sb->s_maxbytes = (u64) 1 << 63; | |
2056 | } else | |
2057 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
2058 | } | |
2059 | ||
8af18971 | 2060 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
1da177e4 LT |
2061 | sb->s_time_gran = 100; |
2062 | ||
2063 | /* on error free sesinfo and tcon struct if needed */ | |
2064 | if (rc) { | |
2065 | /* if session setup failed, use count is zero but | |
2066 | we still need to free cifsd thread */ | |
4523cc30 | 2067 | if (atomic_read(&srvTcp->socketUseCount) == 0) { |
1da177e4 LT |
2068 | spin_lock(&GlobalMid_Lock); |
2069 | srvTcp->tcpStatus = CifsExiting; | |
2070 | spin_unlock(&GlobalMid_Lock); | |
4523cc30 | 2071 | if (srvTcp->tsk) { |
1da177e4 | 2072 | send_sig(SIGKILL,srvTcp->tsk,1); |
aaf737ad | 2073 | kthread_stop(srvTcp->tsk); |
f191401f | 2074 | } |
1da177e4 LT |
2075 | } |
2076 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
2077 | if (tcon) /* up accidently freeing someone elses tcon struct */ | |
2078 | tconInfoFree(tcon); | |
2079 | if (existingCifsSes == NULL) { | |
2080 | if (pSesInfo) { | |
2081 | if ((pSesInfo->server) && | |
2082 | (pSesInfo->status == CifsGood)) { | |
2083 | int temp_rc; | |
2084 | temp_rc = CIFSSMBLogoff(xid, pSesInfo); | |
2085 | /* if the socketUseCount is now zero */ | |
4523cc30 | 2086 | if ((temp_rc == -ESHUTDOWN) && |
aaf737ad | 2087 | (pSesInfo->server) && (pSesInfo->server->tsk)) { |
1da177e4 | 2088 | send_sig(SIGKILL,pSesInfo->server->tsk,1); |
aaf737ad | 2089 | kthread_stop(pSesInfo->server->tsk); |
f191401f | 2090 | } |
1da177e4 LT |
2091 | } else |
2092 | cFYI(1, ("No session or bad tcon")); | |
2093 | sesInfoFree(pSesInfo); | |
2094 | /* pSesInfo = NULL; */ | |
2095 | } | |
2096 | } | |
2097 | } else { | |
2098 | atomic_inc(&tcon->useCount); | |
2099 | cifs_sb->tcon = tcon; | |
2100 | tcon->ses = pSesInfo; | |
2101 | ||
82940a46 | 2102 | /* do not care if following two calls succeed - informational */ |
737b758c SF |
2103 | CIFSSMBQFSDeviceInfo(xid, tcon); |
2104 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
8af18971 SF |
2105 | |
2106 | /* tell server which Unix caps we support */ | |
2107 | if (tcon->ses->capabilities & CAP_UNIX) | |
2108 | reset_cifs_unix_caps(xid, tcon, sb, &volume_info); | |
2109 | ||
3e84469d SF |
2110 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
2111 | cifs_sb->wsize = min(cifs_sb->wsize, | |
2112 | (tcon->ses->server->maxBuf - | |
2113 | MAX_CIFS_HDR_SIZE)); | |
0ae0efad SF |
2114 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
2115 | cifs_sb->rsize = min(cifs_sb->rsize, | |
2116 | (tcon->ses->server->maxBuf - | |
2117 | MAX_CIFS_HDR_SIZE)); | |
1da177e4 LT |
2118 | } |
2119 | ||
2120 | /* volume_info.password is freed above when existing session found | |
2121 | (in which case it is not needed anymore) but when new sesion is created | |
2122 | the password ptr is put in the new session structure (in which case the | |
2123 | password will be freed at unmount time) */ | |
f99d49ad | 2124 | kfree(volume_info.UNC); |
2fe87f02 | 2125 | kfree(volume_info.prepath); |
1da177e4 LT |
2126 | FreeXid(xid); |
2127 | return rc; | |
2128 | } | |
2129 | ||
2130 | static int | |
2131 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 2132 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
2133 | const struct nls_table *nls_codepage) |
2134 | { | |
2135 | struct smb_hdr *smb_buffer; | |
2136 | struct smb_hdr *smb_buffer_response; | |
2137 | SESSION_SETUP_ANDX *pSMB; | |
2138 | SESSION_SETUP_ANDX *pSMBr; | |
2139 | char *bcc_ptr; | |
2140 | char *user; | |
2141 | char *domain; | |
2142 | int rc = 0; | |
2143 | int remaining_words = 0; | |
2144 | int bytes_returned = 0; | |
2145 | int len; | |
2146 | __u32 capabilities; | |
2147 | __u16 count; | |
2148 | ||
eeac8047 | 2149 | cFYI(1, ("In sesssetup")); |
4523cc30 | 2150 | if (ses == NULL) |
1da177e4 LT |
2151 | return -EINVAL; |
2152 | user = ses->userName; | |
2153 | domain = ses->domainName; | |
2154 | smb_buffer = cifs_buf_get(); | |
2155 | if (smb_buffer == NULL) { | |
2156 | return -ENOMEM; | |
2157 | } | |
2158 | smb_buffer_response = smb_buffer; | |
2159 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2160 | ||
2161 | /* send SMBsessionSetup here */ | |
2162 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2163 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2164 | ||
1982c344 | 2165 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2166 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2167 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2168 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2169 | ||
2170 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2171 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2172 | ||
2173 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2174 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2175 | if (ses->capabilities & CAP_UNICODE) { | |
2176 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2177 | capabilities |= CAP_UNICODE; | |
2178 | } | |
2179 | if (ses->capabilities & CAP_STATUS32) { | |
2180 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2181 | capabilities |= CAP_STATUS32; | |
2182 | } | |
2183 | if (ses->capabilities & CAP_DFS) { | |
2184 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2185 | capabilities |= CAP_DFS; | |
2186 | } | |
2187 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2188 | ||
2189 | pSMB->req_no_secext.CaseInsensitivePasswordLength = | |
7c7b25bc | 2190 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2191 | |
2192 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2193 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2194 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2195 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2196 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2197 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2198 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2199 | |
2200 | if (ses->capabilities & CAP_UNICODE) { | |
2201 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2202 | *bcc_ptr = 0; | |
2203 | bcc_ptr++; | |
2204 | } | |
4523cc30 | 2205 | if (user == NULL) |
3979877e | 2206 | bytes_returned = 0; /* skip null user */ |
1da177e4 LT |
2207 | else |
2208 | bytes_returned = | |
e89dc920 | 2209 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2210 | nls_codepage); |
2211 | /* convert number of 16 bit words to bytes */ | |
2212 | bcc_ptr += 2 * bytes_returned; | |
2213 | bcc_ptr += 2; /* trailing null */ | |
2214 | if (domain == NULL) | |
2215 | bytes_returned = | |
e89dc920 | 2216 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2217 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2218 | else | |
2219 | bytes_returned = | |
e89dc920 | 2220 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2221 | nls_codepage); |
2222 | bcc_ptr += 2 * bytes_returned; | |
2223 | bcc_ptr += 2; | |
2224 | bytes_returned = | |
e89dc920 | 2225 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2226 | 32, nls_codepage); |
2227 | bcc_ptr += 2 * bytes_returned; | |
2228 | bytes_returned = | |
e9ff3990 | 2229 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, |
1da177e4 LT |
2230 | 32, nls_codepage); |
2231 | bcc_ptr += 2 * bytes_returned; | |
2232 | bcc_ptr += 2; | |
2233 | bytes_returned = | |
e89dc920 | 2234 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2235 | 64, nls_codepage); |
2236 | bcc_ptr += 2 * bytes_returned; | |
2237 | bcc_ptr += 2; | |
2238 | } else { | |
4523cc30 | 2239 | if (user != NULL) { |
1da177e4 LT |
2240 | strncpy(bcc_ptr, user, 200); |
2241 | bcc_ptr += strnlen(user, 200); | |
2242 | } | |
2243 | *bcc_ptr = 0; | |
2244 | bcc_ptr++; | |
2245 | if (domain == NULL) { | |
2246 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2247 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2248 | } else { | |
2249 | strncpy(bcc_ptr, domain, 64); | |
2250 | bcc_ptr += strnlen(domain, 64); | |
2251 | *bcc_ptr = 0; | |
2252 | bcc_ptr++; | |
2253 | } | |
2254 | strcpy(bcc_ptr, "Linux version "); | |
2255 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2256 | strcpy(bcc_ptr, utsname()->release); |
2257 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2258 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2259 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2260 | } | |
2261 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2262 | smb_buffer->smb_buf_length += count; | |
2263 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2264 | ||
2265 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2266 | &bytes_returned, 1); | |
2267 | if (rc) { | |
2268 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2269 | } else if ((smb_buffer_response->WordCount == 3) | |
2270 | || (smb_buffer_response->WordCount == 4)) { | |
2271 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2272 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2273 | if (action & GUEST_LOGIN) | |
2274 | cFYI(1, (" Guest login")); /* do we want to mark SesInfo struct ? */ | |
2275 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format (le) */ | |
2276 | cFYI(1, ("UID = %d ", ses->Suid)); | |
2277 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2278 | bcc_ptr = pByteArea(smb_buffer_response); | |
2279 | if ((pSMBr->resp.hdr.WordCount == 3) | |
2280 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2281 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2282 | if (pSMBr->resp.hdr.WordCount == 4) | |
2283 | bcc_ptr += blob_len; | |
2284 | ||
2285 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2286 | if ((long) (bcc_ptr) % 2) { | |
2287 | remaining_words = | |
2288 | (BCC(smb_buffer_response) - 1) /2; | |
2289 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2290 | } else { | |
2291 | remaining_words = | |
2292 | BCC(smb_buffer_response) / 2; | |
2293 | } | |
2294 | len = | |
2295 | UniStrnlen((wchar_t *) bcc_ptr, | |
2296 | remaining_words - 1); | |
2297 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2298 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2299 | terminating last Unicode string in response */ | |
a424f8bf SF |
2300 | if(ses->serverOS) |
2301 | kfree(ses->serverOS); | |
e915fc49 | 2302 | ses->serverOS = kzalloc(2 * (len + 1), GFP_KERNEL); |
433dc24f SF |
2303 | if(ses->serverOS == NULL) |
2304 | goto sesssetup_nomem; | |
1da177e4 | 2305 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2306 | (__le16 *)bcc_ptr, len,nls_codepage); |
1da177e4 LT |
2307 | bcc_ptr += 2 * (len + 1); |
2308 | remaining_words -= len + 1; | |
2309 | ses->serverOS[2 * len] = 0; | |
2310 | ses->serverOS[1 + (2 * len)] = 0; | |
2311 | if (remaining_words > 0) { | |
2312 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2313 | remaining_words-1); | |
cd49b492 | 2314 | kfree(ses->serverNOS); |
e915fc49 | 2315 | ses->serverNOS = kzalloc(2 * (len + 1),GFP_KERNEL); |
433dc24f SF |
2316 | if(ses->serverNOS == NULL) |
2317 | goto sesssetup_nomem; | |
1da177e4 | 2318 | cifs_strfromUCS_le(ses->serverNOS, |
e89dc920 | 2319 | (__le16 *)bcc_ptr,len,nls_codepage); |
1da177e4 LT |
2320 | bcc_ptr += 2 * (len + 1); |
2321 | ses->serverNOS[2 * len] = 0; | |
2322 | ses->serverNOS[1 + (2 * len)] = 0; | |
2323 | if(strncmp(ses->serverNOS, | |
2324 | "NT LAN Manager 4",16) == 0) { | |
2325 | cFYI(1,("NT4 server")); | |
2326 | ses->flags |= CIFS_SES_NT4; | |
2327 | } | |
2328 | remaining_words -= len + 1; | |
2329 | if (remaining_words > 0) { | |
433dc24f | 2330 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 2331 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ |
a424f8bf SF |
2332 | if(ses->serverDomain) |
2333 | kfree(ses->serverDomain); | |
1da177e4 | 2334 | ses->serverDomain = |
e915fc49 | 2335 | kzalloc(2*(len+1),GFP_KERNEL); |
433dc24f SF |
2336 | if(ses->serverDomain == NULL) |
2337 | goto sesssetup_nomem; | |
1da177e4 | 2338 | cifs_strfromUCS_le(ses->serverDomain, |
e89dc920 | 2339 | (__le16 *)bcc_ptr,len,nls_codepage); |
1da177e4 LT |
2340 | bcc_ptr += 2 * (len + 1); |
2341 | ses->serverDomain[2*len] = 0; | |
2342 | ses->serverDomain[1+(2*len)] = 0; | |
2343 | } /* else no more room so create dummy domain string */ | |
a424f8bf SF |
2344 | else { |
2345 | if(ses->serverDomain) | |
2346 | kfree(ses->serverDomain); | |
433dc24f | 2347 | ses->serverDomain = |
e915fc49 | 2348 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2349 | } |
1da177e4 | 2350 | } else { /* no room so create dummy domain and NOS string */ |
433dc24f SF |
2351 | /* if these kcallocs fail not much we |
2352 | can do, but better to not fail the | |
2353 | sesssetup itself */ | |
cd49b492 | 2354 | kfree(ses->serverDomain); |
1da177e4 | 2355 | ses->serverDomain = |
e915fc49 | 2356 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2357 | kfree(ses->serverNOS); |
1da177e4 | 2358 | ses->serverNOS = |
e915fc49 | 2359 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2360 | } |
2361 | } else { /* ASCII */ | |
2362 | len = strnlen(bcc_ptr, 1024); | |
2363 | if (((long) bcc_ptr + len) - (long) | |
2364 | pByteArea(smb_buffer_response) | |
2365 | <= BCC(smb_buffer_response)) { | |
cd49b492 | 2366 | kfree(ses->serverOS); |
e915fc49 | 2367 | ses->serverOS = kzalloc(len + 1,GFP_KERNEL); |
433dc24f SF |
2368 | if(ses->serverOS == NULL) |
2369 | goto sesssetup_nomem; | |
1da177e4 LT |
2370 | strncpy(ses->serverOS,bcc_ptr, len); |
2371 | ||
2372 | bcc_ptr += len; | |
2373 | bcc_ptr[0] = 0; /* null terminate the string */ | |
2374 | bcc_ptr++; | |
2375 | ||
2376 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2377 | kfree(ses->serverNOS); |
e915fc49 | 2378 | ses->serverNOS = kzalloc(len + 1,GFP_KERNEL); |
433dc24f SF |
2379 | if(ses->serverNOS == NULL) |
2380 | goto sesssetup_nomem; | |
1da177e4 LT |
2381 | strncpy(ses->serverNOS, bcc_ptr, len); |
2382 | bcc_ptr += len; | |
2383 | bcc_ptr[0] = 0; | |
2384 | bcc_ptr++; | |
2385 | ||
2386 | len = strnlen(bcc_ptr, 1024); | |
a424f8bf SF |
2387 | if(ses->serverDomain) |
2388 | kfree(ses->serverDomain); | |
e915fc49 | 2389 | ses->serverDomain = kzalloc(len + 1,GFP_KERNEL); |
433dc24f SF |
2390 | if(ses->serverDomain == NULL) |
2391 | goto sesssetup_nomem; | |
1da177e4 LT |
2392 | strncpy(ses->serverDomain, bcc_ptr, len); |
2393 | bcc_ptr += len; | |
2394 | bcc_ptr[0] = 0; | |
2395 | bcc_ptr++; | |
2396 | } else | |
2397 | cFYI(1, | |
2398 | ("Variable field of length %d extends beyond end of smb ", | |
2399 | len)); | |
2400 | } | |
2401 | } else { | |
2402 | cERROR(1, | |
2403 | (" Security Blob Length extends beyond end of SMB")); | |
2404 | } | |
2405 | } else { | |
2406 | cERROR(1, | |
2407 | (" Invalid Word count %d: ", | |
2408 | smb_buffer_response->WordCount)); | |
2409 | rc = -EIO; | |
2410 | } | |
433dc24f SF |
2411 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2412 | since that could make reconnection harder, and | |
2413 | reconnection might be needed to free memory */ | |
1da177e4 LT |
2414 | if (smb_buffer) |
2415 | cifs_buf_release(smb_buffer); | |
2416 | ||
2417 | return rc; | |
2418 | } | |
2419 | ||
1da177e4 LT |
2420 | static int |
2421 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
2422 | struct cifsSesInfo *ses, int * pNTLMv2_flag, | |
2423 | const struct nls_table *nls_codepage) | |
2424 | { | |
2425 | struct smb_hdr *smb_buffer; | |
2426 | struct smb_hdr *smb_buffer_response; | |
2427 | SESSION_SETUP_ANDX *pSMB; | |
2428 | SESSION_SETUP_ANDX *pSMBr; | |
2429 | char *bcc_ptr; | |
2430 | char *domain; | |
2431 | int rc = 0; | |
2432 | int remaining_words = 0; | |
2433 | int bytes_returned = 0; | |
2434 | int len; | |
2435 | int SecurityBlobLength = sizeof (NEGOTIATE_MESSAGE); | |
2436 | PNEGOTIATE_MESSAGE SecurityBlob; | |
2437 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2438 | __u32 negotiate_flags, capabilities; | |
2439 | __u16 count; | |
2440 | ||
12b3b8ff | 2441 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
1da177e4 LT |
2442 | if(ses == NULL) |
2443 | return -EINVAL; | |
2444 | domain = ses->domainName; | |
2445 | *pNTLMv2_flag = FALSE; | |
2446 | smb_buffer = cifs_buf_get(); | |
2447 | if (smb_buffer == NULL) { | |
2448 | return -ENOMEM; | |
2449 | } | |
2450 | smb_buffer_response = smb_buffer; | |
2451 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2452 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2453 | ||
2454 | /* send SMBsessionSetup here */ | |
2455 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2456 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2457 | |
2458 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2459 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2460 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2461 | ||
2462 | pSMB->req.AndXCommand = 0xFF; | |
2463 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2464 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2465 | ||
2466 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2467 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2468 | ||
2469 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2470 | CAP_EXTENDED_SECURITY; | |
2471 | if (ses->capabilities & CAP_UNICODE) { | |
2472 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2473 | capabilities |= CAP_UNICODE; | |
2474 | } | |
2475 | if (ses->capabilities & CAP_STATUS32) { | |
2476 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2477 | capabilities |= CAP_STATUS32; | |
2478 | } | |
2479 | if (ses->capabilities & CAP_DFS) { | |
2480 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2481 | capabilities |= CAP_DFS; | |
2482 | } | |
2483 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2484 | ||
2485 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2486 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2487 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2488 | SecurityBlob->MessageType = NtLmNegotiate; | |
2489 | negotiate_flags = | |
2490 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2491 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2492 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 LT |
2493 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
2494 | if(sign_CIFS_PDUs) | |
2495 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; | |
3979877e SF |
2496 | /* if(ntlmv2_support) |
2497 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ | |
1da177e4 LT |
2498 | /* setup pointers to domain name and workstation name */ |
2499 | bcc_ptr += SecurityBlobLength; | |
2500 | ||
2501 | SecurityBlob->WorkstationName.Buffer = 0; | |
2502 | SecurityBlob->WorkstationName.Length = 0; | |
2503 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2504 | ||
12b3b8ff SF |
2505 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2506 | along with username on auth request (ie the response to challenge) */ | |
2507 | SecurityBlob->DomainName.Buffer = 0; | |
2508 | SecurityBlob->DomainName.Length = 0; | |
2509 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2510 | if (ses->capabilities & CAP_UNICODE) { |
2511 | if ((long) bcc_ptr % 2) { | |
2512 | *bcc_ptr = 0; | |
2513 | bcc_ptr++; | |
2514 | } | |
2515 | ||
2516 | bytes_returned = | |
e89dc920 | 2517 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2518 | 32, nls_codepage); |
2519 | bcc_ptr += 2 * bytes_returned; | |
2520 | bytes_returned = | |
e9ff3990 | 2521 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2522 | nls_codepage); |
2523 | bcc_ptr += 2 * bytes_returned; | |
2524 | bcc_ptr += 2; /* null terminate Linux version */ | |
2525 | bytes_returned = | |
e89dc920 | 2526 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2527 | 64, nls_codepage); |
2528 | bcc_ptr += 2 * bytes_returned; | |
2529 | *(bcc_ptr + 1) = 0; | |
2530 | *(bcc_ptr + 2) = 0; | |
2531 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2532 | *(bcc_ptr + 1) = 0; | |
2533 | *(bcc_ptr + 2) = 0; | |
2534 | bcc_ptr += 2; /* null domain */ | |
2535 | } else { /* ASCII */ | |
2536 | strcpy(bcc_ptr, "Linux version "); | |
2537 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2538 | strcpy(bcc_ptr, utsname()->release); |
2539 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2540 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2541 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2542 | bcc_ptr++; /* empty domain field */ | |
2543 | *bcc_ptr = 0; | |
2544 | } | |
2545 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2546 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2547 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2548 | smb_buffer->smb_buf_length += count; | |
2549 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2550 | ||
2551 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2552 | &bytes_returned, 1); | |
2553 | ||
2554 | if (smb_buffer_response->Status.CifsError == | |
2555 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2556 | rc = 0; | |
2557 | ||
2558 | if (rc) { | |
2559 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2560 | } else if ((smb_buffer_response->WordCount == 3) | |
2561 | || (smb_buffer_response->WordCount == 4)) { | |
2562 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2563 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2564 | ||
2565 | if (action & GUEST_LOGIN) | |
2566 | cFYI(1, (" Guest login")); | |
2567 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
2568 | ||
2569 | bcc_ptr = pByteArea(smb_buffer_response); | |
2570 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2571 | ||
2572 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2573 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2574 | cFYI(1, | |
2575 | ("Unexpected NTLMSSP message type received %d", | |
2576 | SecurityBlob2->MessageType)); | |
2577 | } else if (ses) { | |
2578 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ | |
12b3b8ff | 2579 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2580 | if ((pSMBr->resp.hdr.WordCount == 3) |
2581 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2582 | && (blob_len < | |
2583 | pSMBr->resp.ByteCount))) { | |
2584 | ||
2585 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2586 | bcc_ptr += blob_len; | |
12b3b8ff | 2587 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2588 | blob_len)); |
2589 | } | |
2590 | ||
12b3b8ff | 2591 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2592 | |
2593 | memcpy(ses->server->cryptKey, | |
2594 | SecurityBlob2->Challenge, | |
2595 | CIFS_CRYPTO_KEY_SIZE); | |
12b3b8ff SF |
2596 | if(SecurityBlob2->NegotiateFlags & |
2597 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) | |
1da177e4 LT |
2598 | *pNTLMv2_flag = TRUE; |
2599 | ||
2600 | if((SecurityBlob2->NegotiateFlags & | |
2601 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
2602 | || (sign_CIFS_PDUs > 1)) | |
2603 | ses->server->secMode |= | |
2604 | SECMODE_SIGN_REQUIRED; | |
2605 | if ((SecurityBlob2->NegotiateFlags & | |
2606 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) | |
2607 | ses->server->secMode |= | |
2608 | SECMODE_SIGN_ENABLED; | |
2609 | ||
2610 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2611 | if ((long) (bcc_ptr) % 2) { | |
2612 | remaining_words = | |
2613 | (BCC(smb_buffer_response) | |
2614 | - 1) / 2; | |
2615 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2616 | } else { | |
2617 | remaining_words = | |
2618 | BCC | |
2619 | (smb_buffer_response) / 2; | |
2620 | } | |
2621 | len = | |
2622 | UniStrnlen((wchar_t *) bcc_ptr, | |
2623 | remaining_words - 1); | |
2624 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2625 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2626 | terminating last Unicode string in response */ | |
a424f8bf SF |
2627 | if(ses->serverOS) |
2628 | kfree(ses->serverOS); | |
1da177e4 | 2629 | ses->serverOS = |
e915fc49 | 2630 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2631 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2632 | (__le16 *) |
1da177e4 LT |
2633 | bcc_ptr, len, |
2634 | nls_codepage); | |
2635 | bcc_ptr += 2 * (len + 1); | |
2636 | remaining_words -= len + 1; | |
2637 | ses->serverOS[2 * len] = 0; | |
2638 | ses->serverOS[1 + (2 * len)] = 0; | |
2639 | if (remaining_words > 0) { | |
2640 | len = UniStrnlen((wchar_t *) | |
2641 | bcc_ptr, | |
2642 | remaining_words | |
2643 | - 1); | |
cd49b492 | 2644 | kfree(ses->serverNOS); |
1da177e4 | 2645 | ses->serverNOS = |
e915fc49 | 2646 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2647 | GFP_KERNEL); |
2648 | cifs_strfromUCS_le(ses-> | |
2649 | serverNOS, | |
e89dc920 | 2650 | (__le16 *) |
1da177e4 LT |
2651 | bcc_ptr, |
2652 | len, | |
2653 | nls_codepage); | |
2654 | bcc_ptr += 2 * (len + 1); | |
2655 | ses->serverNOS[2 * len] = 0; | |
2656 | ses->serverNOS[1 + | |
2657 | (2 * len)] = 0; | |
2658 | remaining_words -= len + 1; | |
2659 | if (remaining_words > 0) { | |
2660 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
2661 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ | |
cd49b492 | 2662 | kfree(ses->serverDomain); |
1da177e4 | 2663 | ses->serverDomain = |
e915fc49 | 2664 | kzalloc(2 * |
1da177e4 LT |
2665 | (len + |
2666 | 1), | |
2667 | GFP_KERNEL); | |
2668 | cifs_strfromUCS_le | |
e89dc920 SF |
2669 | (ses->serverDomain, |
2670 | (__le16 *)bcc_ptr, | |
2671 | len, nls_codepage); | |
1da177e4 LT |
2672 | bcc_ptr += |
2673 | 2 * (len + 1); | |
e89dc920 | 2674 | ses->serverDomain[2*len] |
1da177e4 | 2675 | = 0; |
e89dc920 SF |
2676 | ses->serverDomain |
2677 | [1 + (2 * len)] | |
1da177e4 LT |
2678 | = 0; |
2679 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 2680 | else { |
cd49b492 | 2681 | kfree(ses->serverDomain); |
1da177e4 | 2682 | ses->serverDomain = |
e915fc49 | 2683 | kzalloc(2, |
1da177e4 | 2684 | GFP_KERNEL); |
a424f8bf | 2685 | } |
1da177e4 | 2686 | } else { /* no room so create dummy domain and NOS string */ |
cd49b492 | 2687 | kfree(ses->serverDomain); |
1da177e4 | 2688 | ses->serverDomain = |
e915fc49 | 2689 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2690 | kfree(ses->serverNOS); |
1da177e4 | 2691 | ses->serverNOS = |
e915fc49 | 2692 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2693 | } |
2694 | } else { /* ASCII */ | |
2695 | len = strnlen(bcc_ptr, 1024); | |
2696 | if (((long) bcc_ptr + len) - (long) | |
2697 | pByteArea(smb_buffer_response) | |
2698 | <= BCC(smb_buffer_response)) { | |
a424f8bf SF |
2699 | if(ses->serverOS) |
2700 | kfree(ses->serverOS); | |
1da177e4 | 2701 | ses->serverOS = |
e915fc49 | 2702 | kzalloc(len + 1, |
1da177e4 LT |
2703 | GFP_KERNEL); |
2704 | strncpy(ses->serverOS, | |
2705 | bcc_ptr, len); | |
2706 | ||
2707 | bcc_ptr += len; | |
2708 | bcc_ptr[0] = 0; /* null terminate string */ | |
2709 | bcc_ptr++; | |
2710 | ||
2711 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2712 | kfree(ses->serverNOS); |
1da177e4 | 2713 | ses->serverNOS = |
e915fc49 | 2714 | kzalloc(len + 1, |
1da177e4 LT |
2715 | GFP_KERNEL); |
2716 | strncpy(ses->serverNOS, bcc_ptr, len); | |
2717 | bcc_ptr += len; | |
2718 | bcc_ptr[0] = 0; | |
2719 | bcc_ptr++; | |
2720 | ||
2721 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2722 | kfree(ses->serverDomain); |
1da177e4 | 2723 | ses->serverDomain = |
e915fc49 | 2724 | kzalloc(len + 1, |
1da177e4 LT |
2725 | GFP_KERNEL); |
2726 | strncpy(ses->serverDomain, bcc_ptr, len); | |
2727 | bcc_ptr += len; | |
2728 | bcc_ptr[0] = 0; | |
2729 | bcc_ptr++; | |
2730 | } else | |
2731 | cFYI(1, | |
12b3b8ff | 2732 | ("Variable field of length %d extends beyond end of smb", |
1da177e4 LT |
2733 | len)); |
2734 | } | |
2735 | } else { | |
2736 | cERROR(1, | |
2737 | (" Security Blob Length extends beyond end of SMB")); | |
2738 | } | |
2739 | } else { | |
2740 | cERROR(1, ("No session structure passed in.")); | |
2741 | } | |
2742 | } else { | |
2743 | cERROR(1, | |
5815449d | 2744 | (" Invalid Word count %d:", |
1da177e4 LT |
2745 | smb_buffer_response->WordCount)); |
2746 | rc = -EIO; | |
2747 | } | |
2748 | ||
2749 | if (smb_buffer) | |
2750 | cifs_buf_release(smb_buffer); | |
2751 | ||
2752 | return rc; | |
2753 | } | |
2754 | static int | |
2755 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
2756 | char *ntlm_session_key, int ntlmv2_flag, | |
2757 | const struct nls_table *nls_codepage) | |
2758 | { | |
2759 | struct smb_hdr *smb_buffer; | |
2760 | struct smb_hdr *smb_buffer_response; | |
2761 | SESSION_SETUP_ANDX *pSMB; | |
2762 | SESSION_SETUP_ANDX *pSMBr; | |
2763 | char *bcc_ptr; | |
2764 | char *user; | |
2765 | char *domain; | |
2766 | int rc = 0; | |
2767 | int remaining_words = 0; | |
2768 | int bytes_returned = 0; | |
2769 | int len; | |
2770 | int SecurityBlobLength = sizeof (AUTHENTICATE_MESSAGE); | |
2771 | PAUTHENTICATE_MESSAGE SecurityBlob; | |
2772 | __u32 negotiate_flags, capabilities; | |
2773 | __u16 count; | |
2774 | ||
2775 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
2776 | if(ses == NULL) | |
2777 | return -EINVAL; | |
2778 | user = ses->userName; | |
2779 | domain = ses->domainName; | |
2780 | smb_buffer = cifs_buf_get(); | |
2781 | if (smb_buffer == NULL) { | |
2782 | return -ENOMEM; | |
2783 | } | |
2784 | smb_buffer_response = smb_buffer; | |
2785 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2786 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2787 | ||
2788 | /* send SMBsessionSetup here */ | |
2789 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2790 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2791 | |
2792 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2793 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
2794 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2795 | pSMB->req.AndXCommand = 0xFF; | |
2796 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2797 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2798 | ||
2799 | pSMB->req.hdr.Uid = ses->Suid; | |
2800 | ||
2801 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2802 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2803 | ||
2804 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2805 | CAP_EXTENDED_SECURITY; | |
2806 | if (ses->capabilities & CAP_UNICODE) { | |
2807 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2808 | capabilities |= CAP_UNICODE; | |
2809 | } | |
2810 | if (ses->capabilities & CAP_STATUS32) { | |
2811 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2812 | capabilities |= CAP_STATUS32; | |
2813 | } | |
2814 | if (ses->capabilities & CAP_DFS) { | |
2815 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2816 | capabilities |= CAP_DFS; | |
2817 | } | |
2818 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2819 | ||
2820 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2821 | SecurityBlob = (PAUTHENTICATE_MESSAGE) bcc_ptr; | |
2822 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2823 | SecurityBlob->MessageType = NtLmAuthenticate; | |
2824 | bcc_ptr += SecurityBlobLength; | |
2825 | negotiate_flags = | |
2826 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | | |
2827 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
2828 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
2829 | if(sign_CIFS_PDUs) | |
2830 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; | |
2831 | if(ntlmv2_flag) | |
2832 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; | |
2833 | ||
2834 | /* setup pointers to domain name and workstation name */ | |
2835 | ||
2836 | SecurityBlob->WorkstationName.Buffer = 0; | |
2837 | SecurityBlob->WorkstationName.Length = 0; | |
2838 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2839 | SecurityBlob->SessionKey.Length = 0; | |
2840 | SecurityBlob->SessionKey.MaximumLength = 0; | |
2841 | SecurityBlob->SessionKey.Buffer = 0; | |
2842 | ||
2843 | SecurityBlob->LmChallengeResponse.Length = 0; | |
2844 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
2845 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
2846 | ||
2847 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 2848 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2849 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
2850 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
2851 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
2852 | SecurityBlob->NtChallengeResponse.Buffer = |
2853 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
2854 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
2855 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2856 | |
2857 | if (ses->capabilities & CAP_UNICODE) { | |
2858 | if (domain == NULL) { | |
2859 | SecurityBlob->DomainName.Buffer = 0; | |
2860 | SecurityBlob->DomainName.Length = 0; | |
2861 | SecurityBlob->DomainName.MaximumLength = 0; | |
2862 | } else { | |
2863 | __u16 len = | |
e89dc920 | 2864 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2865 | nls_codepage); |
2866 | len *= 2; | |
2867 | SecurityBlob->DomainName.MaximumLength = | |
2868 | cpu_to_le16(len); | |
2869 | SecurityBlob->DomainName.Buffer = | |
2870 | cpu_to_le32(SecurityBlobLength); | |
2871 | bcc_ptr += len; | |
2872 | SecurityBlobLength += len; | |
2873 | SecurityBlob->DomainName.Length = | |
2874 | cpu_to_le16(len); | |
2875 | } | |
2876 | if (user == NULL) { | |
2877 | SecurityBlob->UserName.Buffer = 0; | |
2878 | SecurityBlob->UserName.Length = 0; | |
2879 | SecurityBlob->UserName.MaximumLength = 0; | |
2880 | } else { | |
2881 | __u16 len = | |
e89dc920 | 2882 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 LT |
2883 | nls_codepage); |
2884 | len *= 2; | |
2885 | SecurityBlob->UserName.MaximumLength = | |
2886 | cpu_to_le16(len); | |
2887 | SecurityBlob->UserName.Buffer = | |
2888 | cpu_to_le32(SecurityBlobLength); | |
2889 | bcc_ptr += len; | |
2890 | SecurityBlobLength += len; | |
2891 | SecurityBlob->UserName.Length = | |
2892 | cpu_to_le16(len); | |
2893 | } | |
2894 | ||
e89dc920 | 2895 | /* SecurityBlob->WorkstationName.Length = cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); |
1da177e4 LT |
2896 | SecurityBlob->WorkstationName.Length *= 2; |
2897 | SecurityBlob->WorkstationName.MaximumLength = cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
2898 | SecurityBlob->WorkstationName.Buffer = cpu_to_le32(SecurityBlobLength); | |
2899 | bcc_ptr += SecurityBlob->WorkstationName.Length; | |
2900 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
2901 | SecurityBlob->WorkstationName.Length = cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
2902 | ||
2903 | if ((long) bcc_ptr % 2) { | |
2904 | *bcc_ptr = 0; | |
2905 | bcc_ptr++; | |
2906 | } | |
2907 | bytes_returned = | |
e89dc920 | 2908 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2909 | 32, nls_codepage); |
2910 | bcc_ptr += 2 * bytes_returned; | |
2911 | bytes_returned = | |
e9ff3990 | 2912 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2913 | nls_codepage); |
2914 | bcc_ptr += 2 * bytes_returned; | |
2915 | bcc_ptr += 2; /* null term version string */ | |
2916 | bytes_returned = | |
e89dc920 | 2917 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2918 | 64, nls_codepage); |
2919 | bcc_ptr += 2 * bytes_returned; | |
2920 | *(bcc_ptr + 1) = 0; | |
2921 | *(bcc_ptr + 2) = 0; | |
2922 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2923 | *(bcc_ptr + 1) = 0; | |
2924 | *(bcc_ptr + 2) = 0; | |
2925 | bcc_ptr += 2; /* null domain */ | |
2926 | } else { /* ASCII */ | |
2927 | if (domain == NULL) { | |
2928 | SecurityBlob->DomainName.Buffer = 0; | |
2929 | SecurityBlob->DomainName.Length = 0; | |
2930 | SecurityBlob->DomainName.MaximumLength = 0; | |
2931 | } else { | |
2932 | __u16 len; | |
2933 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; | |
2934 | strncpy(bcc_ptr, domain, 63); | |
2935 | len = strnlen(domain, 64); | |
2936 | SecurityBlob->DomainName.MaximumLength = | |
2937 | cpu_to_le16(len); | |
2938 | SecurityBlob->DomainName.Buffer = | |
2939 | cpu_to_le32(SecurityBlobLength); | |
2940 | bcc_ptr += len; | |
2941 | SecurityBlobLength += len; | |
2942 | SecurityBlob->DomainName.Length = cpu_to_le16(len); | |
2943 | } | |
2944 | if (user == NULL) { | |
2945 | SecurityBlob->UserName.Buffer = 0; | |
2946 | SecurityBlob->UserName.Length = 0; | |
2947 | SecurityBlob->UserName.MaximumLength = 0; | |
2948 | } else { | |
2949 | __u16 len; | |
2950 | strncpy(bcc_ptr, user, 63); | |
2951 | len = strnlen(user, 64); | |
2952 | SecurityBlob->UserName.MaximumLength = | |
2953 | cpu_to_le16(len); | |
2954 | SecurityBlob->UserName.Buffer = | |
2955 | cpu_to_le32(SecurityBlobLength); | |
2956 | bcc_ptr += len; | |
2957 | SecurityBlobLength += len; | |
2958 | SecurityBlob->UserName.Length = cpu_to_le16(len); | |
2959 | } | |
2960 | /* BB fill in our workstation name if known BB */ | |
2961 | ||
2962 | strcpy(bcc_ptr, "Linux version "); | |
2963 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2964 | strcpy(bcc_ptr, utsname()->release); |
2965 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2966 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2967 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2968 | bcc_ptr++; /* null domain */ | |
2969 | *bcc_ptr = 0; | |
2970 | } | |
2971 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2972 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2973 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2974 | smb_buffer->smb_buf_length += count; | |
2975 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2976 | ||
2977 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2978 | &bytes_returned, 1); | |
2979 | if (rc) { | |
2980 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2981 | } else if ((smb_buffer_response->WordCount == 3) | |
2982 | || (smb_buffer_response->WordCount == 4)) { | |
2983 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2984 | __u16 blob_len = | |
2985 | le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2986 | if (action & GUEST_LOGIN) | |
2987 | cFYI(1, (" Guest login")); /* BB do we want to set anything in SesInfo struct ? */ | |
2988 | /* if(SecurityBlob2->MessageType != NtLm??){ | |
2989 | cFYI("Unexpected message type on auth response is %d ")); | |
2990 | } */ | |
2991 | if (ses) { | |
2992 | cFYI(1, | |
2993 | ("Does UID on challenge %d match auth response UID %d ", | |
2994 | ses->Suid, smb_buffer_response->Uid)); | |
2995 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format */ | |
2996 | bcc_ptr = pByteArea(smb_buffer_response); | |
2997 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2998 | if ((pSMBr->resp.hdr.WordCount == 3) | |
2999 | || ((pSMBr->resp.hdr.WordCount == 4) | |
3000 | && (blob_len < | |
3001 | pSMBr->resp.ByteCount))) { | |
3002 | if (pSMBr->resp.hdr.WordCount == 4) { | |
3003 | bcc_ptr += | |
3004 | blob_len; | |
3005 | cFYI(1, | |
3006 | ("Security Blob Length %d ", | |
3007 | blob_len)); | |
3008 | } | |
3009 | ||
3010 | cFYI(1, | |
3011 | ("NTLMSSP response to Authenticate ")); | |
3012 | ||
3013 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3014 | if ((long) (bcc_ptr) % 2) { | |
3015 | remaining_words = | |
3016 | (BCC(smb_buffer_response) | |
3017 | - 1) / 2; | |
3018 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
3019 | } else { | |
3020 | remaining_words = BCC(smb_buffer_response) / 2; | |
3021 | } | |
3022 | len = | |
3023 | UniStrnlen((wchar_t *) bcc_ptr,remaining_words - 1); | |
3024 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
3025 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
3026 | terminating last Unicode string in response */ | |
a424f8bf | 3027 | if(ses->serverOS) |
08775834 | 3028 | kfree(ses->serverOS); |
1da177e4 | 3029 | ses->serverOS = |
e915fc49 | 3030 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 3031 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 3032 | (__le16 *) |
1da177e4 LT |
3033 | bcc_ptr, len, |
3034 | nls_codepage); | |
3035 | bcc_ptr += 2 * (len + 1); | |
3036 | remaining_words -= len + 1; | |
3037 | ses->serverOS[2 * len] = 0; | |
3038 | ses->serverOS[1 + (2 * len)] = 0; | |
3039 | if (remaining_words > 0) { | |
3040 | len = UniStrnlen((wchar_t *) | |
3041 | bcc_ptr, | |
3042 | remaining_words | |
3043 | - 1); | |
cd49b492 | 3044 | kfree(ses->serverNOS); |
1da177e4 | 3045 | ses->serverNOS = |
e915fc49 | 3046 | kzalloc(2 * (len + 1), |
1da177e4 LT |
3047 | GFP_KERNEL); |
3048 | cifs_strfromUCS_le(ses-> | |
3049 | serverNOS, | |
e89dc920 | 3050 | (__le16 *) |
1da177e4 LT |
3051 | bcc_ptr, |
3052 | len, | |
3053 | nls_codepage); | |
3054 | bcc_ptr += 2 * (len + 1); | |
3055 | ses->serverNOS[2 * len] = 0; | |
3056 | ses->serverNOS[1+(2*len)] = 0; | |
3057 | remaining_words -= len + 1; | |
3058 | if (remaining_words > 0) { | |
3059 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
3060 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ | |
a424f8bf SF |
3061 | if(ses->serverDomain) |
3062 | kfree(ses->serverDomain); | |
1da177e4 | 3063 | ses->serverDomain = |
e915fc49 | 3064 | kzalloc(2 * |
1da177e4 LT |
3065 | (len + |
3066 | 1), | |
3067 | GFP_KERNEL); | |
3068 | cifs_strfromUCS_le | |
3069 | (ses-> | |
3070 | serverDomain, | |
e89dc920 | 3071 | (__le16 *) |
1da177e4 LT |
3072 | bcc_ptr, len, |
3073 | nls_codepage); | |
3074 | bcc_ptr += | |
3075 | 2 * (len + 1); | |
3076 | ses-> | |
3077 | serverDomain[2 | |
3078 | * len] | |
3079 | = 0; | |
3080 | ses-> | |
3081 | serverDomain[1 | |
3082 | + | |
3083 | (2 | |
3084 | * | |
3085 | len)] | |
3086 | = 0; | |
3087 | } /* else no more room so create dummy domain string */ | |
a424f8bf SF |
3088 | else { |
3089 | if(ses->serverDomain) | |
3090 | kfree(ses->serverDomain); | |
e915fc49 | 3091 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 3092 | } |
1da177e4 | 3093 | } else { /* no room so create dummy domain and NOS string */ |
a424f8bf SF |
3094 | if(ses->serverDomain) |
3095 | kfree(ses->serverDomain); | |
e915fc49 | 3096 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 3097 | kfree(ses->serverNOS); |
e915fc49 | 3098 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3099 | } |
3100 | } else { /* ASCII */ | |
3101 | len = strnlen(bcc_ptr, 1024); | |
3102 | if (((long) bcc_ptr + len) - | |
3103 | (long) pByteArea(smb_buffer_response) | |
3104 | <= BCC(smb_buffer_response)) { | |
a424f8bf SF |
3105 | if(ses->serverOS) |
3106 | kfree(ses->serverOS); | |
e915fc49 | 3107 | ses->serverOS = kzalloc(len + 1,GFP_KERNEL); |
1da177e4 LT |
3108 | strncpy(ses->serverOS,bcc_ptr, len); |
3109 | ||
3110 | bcc_ptr += len; | |
3111 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3112 | bcc_ptr++; | |
3113 | ||
3114 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3115 | kfree(ses->serverNOS); |
e915fc49 | 3116 | ses->serverNOS = kzalloc(len+1,GFP_KERNEL); |
1da177e4 LT |
3117 | strncpy(ses->serverNOS, bcc_ptr, len); |
3118 | bcc_ptr += len; | |
3119 | bcc_ptr[0] = 0; | |
3120 | bcc_ptr++; | |
3121 | ||
3122 | len = strnlen(bcc_ptr, 1024); | |
a424f8bf SF |
3123 | if(ses->serverDomain) |
3124 | kfree(ses->serverDomain); | |
e915fc49 | 3125 | ses->serverDomain = kzalloc(len+1,GFP_KERNEL); |
1da177e4 LT |
3126 | strncpy(ses->serverDomain, bcc_ptr, len); |
3127 | bcc_ptr += len; | |
3128 | bcc_ptr[0] = 0; | |
3129 | bcc_ptr++; | |
3130 | } else | |
3131 | cFYI(1, | |
3132 | ("Variable field of length %d extends beyond end of smb ", | |
3133 | len)); | |
3134 | } | |
3135 | } else { | |
3136 | cERROR(1, | |
3137 | (" Security Blob Length extends beyond end of SMB")); | |
3138 | } | |
3139 | } else { | |
3140 | cERROR(1, ("No session structure passed in.")); | |
3141 | } | |
3142 | } else { | |
3143 | cERROR(1, | |
3144 | (" Invalid Word count %d: ", | |
3145 | smb_buffer_response->WordCount)); | |
3146 | rc = -EIO; | |
3147 | } | |
3148 | ||
3149 | if (smb_buffer) | |
3150 | cifs_buf_release(smb_buffer); | |
3151 | ||
3152 | return rc; | |
3153 | } | |
3154 | ||
3155 | int | |
3156 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3157 | const char *tree, struct cifsTconInfo *tcon, | |
3158 | const struct nls_table *nls_codepage) | |
3159 | { | |
3160 | struct smb_hdr *smb_buffer; | |
3161 | struct smb_hdr *smb_buffer_response; | |
3162 | TCONX_REQ *pSMB; | |
3163 | TCONX_RSP *pSMBr; | |
3164 | unsigned char *bcc_ptr; | |
3165 | int rc = 0; | |
3166 | int length; | |
3167 | __u16 count; | |
3168 | ||
3169 | if (ses == NULL) | |
3170 | return -EIO; | |
3171 | ||
3172 | smb_buffer = cifs_buf_get(); | |
3173 | if (smb_buffer == NULL) { | |
3174 | return -ENOMEM; | |
3175 | } | |
3176 | smb_buffer_response = smb_buffer; | |
3177 | ||
3178 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3179 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3180 | |
3181 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3182 | smb_buffer->Uid = ses->Suid; |
3183 | pSMB = (TCONX_REQ *) smb_buffer; | |
3184 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3185 | ||
3186 | pSMB->AndXCommand = 0xFF; | |
3187 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3188 | bcc_ptr = &pSMB->Password[0]; |
eeac8047 SF |
3189 | if((ses->server->secMode) & SECMODE_USER) { |
3190 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ | |
7c7b25bc | 3191 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3192 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3193 | /* already aligned so no need to do it below */ |
eeac8047 | 3194 | } else { |
7c7b25bc | 3195 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3196 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3197 | specified as required (when that support is added to | |
3198 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3199 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3200 | by Samba (not sure whether other servers allow |
3201 | NTLMv2 password here) */ | |
7c7b25bc SF |
3202 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
3203 | if((extended_security & CIFSSEC_MAY_LANMAN) && | |
3204 | (ses->server->secType == LANMAN)) | |
3205 | calc_lanman_hash(ses, bcc_ptr); | |
3206 | else | |
3207 | #endif /* CIFS_WEAK_PW_HASH */ | |
eeac8047 SF |
3208 | SMBNTencrypt(ses->password, |
3209 | ses->server->cryptKey, | |
3210 | bcc_ptr); | |
3211 | ||
7c7b25bc SF |
3212 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
3213 | if(ses->capabilities & CAP_UNICODE) { | |
3214 | /* must align unicode strings */ | |
3215 | *bcc_ptr = 0; /* null byte password */ | |
3216 | bcc_ptr++; | |
3217 | } | |
eeac8047 | 3218 | } |
1da177e4 | 3219 | |
a878fb22 SF |
3220 | if(ses->server->secMode & |
3221 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
3222 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3223 | ||
3224 | if (ses->capabilities & CAP_STATUS32) { | |
3225 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3226 | } | |
3227 | if (ses->capabilities & CAP_DFS) { | |
3228 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3229 | } | |
3230 | if (ses->capabilities & CAP_UNICODE) { | |
3231 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3232 | length = | |
a878fb22 SF |
3233 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3234 | 6 /* max utf8 char length in bytes */ * | |
3235 | (/* server len*/ + 256 /* share len */), nls_codepage); | |
3236 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3237 | bcc_ptr += 2; /* skip trailing null */ |
3238 | } else { /* ASCII */ | |
1da177e4 LT |
3239 | strcpy(bcc_ptr, tree); |
3240 | bcc_ptr += strlen(tree) + 1; | |
3241 | } | |
3242 | strcpy(bcc_ptr, "?????"); | |
3243 | bcc_ptr += strlen("?????"); | |
3244 | bcc_ptr += 1; | |
3245 | count = bcc_ptr - &pSMB->Password[0]; | |
3246 | pSMB->hdr.smb_buf_length += count; | |
3247 | pSMB->ByteCount = cpu_to_le16(count); | |
3248 | ||
3249 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, 0); | |
3250 | ||
3251 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3252 | /* above now done in SendReceive */ | |
3253 | if ((rc == 0) && (tcon != NULL)) { | |
3254 | tcon->tidStatus = CifsGood; | |
3255 | tcon->tid = smb_buffer_response->Tid; | |
3256 | bcc_ptr = pByteArea(smb_buffer_response); | |
3257 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
3258 | /* skip service field (NB: this field is always ASCII) */ | |
3259 | bcc_ptr += length + 1; | |
3260 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); | |
3261 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3262 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3263 | if ((bcc_ptr + (2 * length)) - | |
3264 | pByteArea(smb_buffer_response) <= | |
3265 | BCC(smb_buffer_response)) { | |
f99d49ad | 3266 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3267 | tcon->nativeFileSystem = |
e915fc49 | 3268 | kzalloc(length + 2, GFP_KERNEL); |
1da177e4 | 3269 | cifs_strfromUCS_le(tcon->nativeFileSystem, |
e89dc920 | 3270 | (__le16 *) bcc_ptr, |
1da177e4 LT |
3271 | length, nls_codepage); |
3272 | bcc_ptr += 2 * length; | |
3273 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3274 | bcc_ptr[1] = 0; | |
3275 | bcc_ptr += 2; | |
3276 | } | |
3277 | /* else do not bother copying these informational fields */ | |
3278 | } else { | |
3279 | length = strnlen(bcc_ptr, 1024); | |
3280 | if ((bcc_ptr + length) - | |
3281 | pByteArea(smb_buffer_response) <= | |
3282 | BCC(smb_buffer_response)) { | |
f99d49ad | 3283 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3284 | tcon->nativeFileSystem = |
e915fc49 | 3285 | kzalloc(length + 1, GFP_KERNEL); |
1da177e4 LT |
3286 | strncpy(tcon->nativeFileSystem, bcc_ptr, |
3287 | length); | |
3288 | } | |
3289 | /* else do not bother copying these informational fields */ | |
3290 | } | |
1a4e15a0 SF |
3291 | if((smb_buffer_response->WordCount == 3) || |
3292 | (smb_buffer_response->WordCount == 7)) | |
3293 | /* field is in same location */ | |
3979877e SF |
3294 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
3295 | else | |
3296 | tcon->Flags = 0; | |
1da177e4 LT |
3297 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3298 | } else if ((rc == 0) && tcon == NULL) { | |
3299 | /* all we need to save for IPC$ connection */ | |
3300 | ses->ipc_tid = smb_buffer_response->Tid; | |
3301 | } | |
3302 | ||
3303 | if (smb_buffer) | |
3304 | cifs_buf_release(smb_buffer); | |
3305 | return rc; | |
3306 | } | |
3307 | ||
3308 | int | |
3309 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3310 | { | |
3311 | int rc = 0; | |
3312 | int xid; | |
3313 | struct cifsSesInfo *ses = NULL; | |
3314 | struct task_struct *cifsd_task; | |
2fe87f02 | 3315 | char * tmp; |
1da177e4 LT |
3316 | |
3317 | xid = GetXid(); | |
3318 | ||
3319 | if (cifs_sb->tcon) { | |
3320 | ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ | |
3321 | rc = CIFSSMBTDis(xid, cifs_sb->tcon); | |
3322 | if (rc == -EBUSY) { | |
3323 | FreeXid(xid); | |
3324 | return 0; | |
3325 | } | |
3326 | tconInfoFree(cifs_sb->tcon); | |
3327 | if ((ses) && (ses->server)) { | |
3328 | /* save off task so we do not refer to ses later */ | |
3329 | cifsd_task = ses->server->tsk; | |
3330 | cFYI(1, ("About to do SMBLogoff ")); | |
3331 | rc = CIFSSMBLogoff(xid, ses); | |
3332 | if (rc == -EBUSY) { | |
3333 | FreeXid(xid); | |
3334 | return 0; | |
3335 | } else if (rc == -ESHUTDOWN) { | |
3336 | cFYI(1,("Waking up socket by sending it signal")); | |
f191401f | 3337 | if(cifsd_task) { |
1da177e4 | 3338 | send_sig(SIGKILL,cifsd_task,1); |
aaf737ad | 3339 | kthread_stop(cifsd_task); |
f191401f | 3340 | } |
1da177e4 LT |
3341 | rc = 0; |
3342 | } /* else - we have an smb session | |
3343 | left on this socket do not kill cifsd */ | |
3344 | } else | |
3345 | cFYI(1, ("No session or bad tcon")); | |
3346 | } | |
3347 | ||
3348 | cifs_sb->tcon = NULL; | |
2fe87f02 SF |
3349 | tmp = cifs_sb->prepath; |
3350 | cifs_sb->prepathlen = 0; | |
3351 | cifs_sb->prepath = NULL; | |
3352 | kfree(tmp); | |
041e0e3b NA |
3353 | if (ses) |
3354 | schedule_timeout_interruptible(msecs_to_jiffies(500)); | |
1da177e4 LT |
3355 | if (ses) |
3356 | sesInfoFree(ses); | |
3357 | ||
3358 | FreeXid(xid); | |
3359 | return rc; /* BB check if we should always return zero here */ | |
3360 | } | |
3361 | ||
3362 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
3363 | struct nls_table * nls_info) | |
3364 | { | |
3365 | int rc = 0; | |
7c7b25bc | 3366 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
1da177e4 | 3367 | int ntlmv2_flag = FALSE; |
ad009ac9 | 3368 | int first_time = 0; |
1da177e4 LT |
3369 | |
3370 | /* what if server changes its buffer size after dropping the session? */ | |
3371 | if(pSesInfo->server->maxBuf == 0) /* no need to send on reconnect */ { | |
3372 | rc = CIFSSMBNegotiate(xid, pSesInfo); | |
3373 | if(rc == -EAGAIN) /* retry only once on 1st time connection */ { | |
3374 | rc = CIFSSMBNegotiate(xid, pSesInfo); | |
3375 | if(rc == -EAGAIN) | |
3376 | rc = -EHOSTDOWN; | |
3377 | } | |
3378 | if(rc == 0) { | |
3379 | spin_lock(&GlobalMid_Lock); | |
3380 | if(pSesInfo->server->tcpStatus != CifsExiting) | |
3381 | pSesInfo->server->tcpStatus = CifsGood; | |
3382 | else | |
3383 | rc = -EHOSTDOWN; | |
3384 | spin_unlock(&GlobalMid_Lock); | |
3385 | ||
3386 | } | |
ad009ac9 | 3387 | first_time = 1; |
1da177e4 LT |
3388 | } |
3389 | if (!rc) { | |
9ac00b7d | 3390 | pSesInfo->flags = 0; |
1da177e4 LT |
3391 | pSesInfo->capabilities = pSesInfo->server->capabilities; |
3392 | if(linuxExtEnabled == 0) | |
3393 | pSesInfo->capabilities &= (~CAP_UNIX); | |
ad009ac9 | 3394 | /* pSesInfo->sequence_number = 0;*/ |
175ec9e1 | 3395 | cFYI(1,("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", |
1da177e4 LT |
3396 | pSesInfo->server->secMode, |
3397 | pSesInfo->server->capabilities, | |
175ec9e1 | 3398 | pSesInfo->server->timeAdj)); |
189acaae | 3399 | if(experimEnabled < 2) |
3979877e SF |
3400 | rc = CIFS_SessSetup(xid, pSesInfo, |
3401 | first_time, nls_info); | |
189acaae | 3402 | else if (extended_security |
175ec9e1 SF |
3403 | && (pSesInfo->capabilities |
3404 | & CAP_EXTENDED_SECURITY) | |
1da177e4 | 3405 | && (pSesInfo->server->secType == NTLMSSP)) { |
189acaae | 3406 | rc = -EOPNOTSUPP; |
1da177e4 LT |
3407 | } else if (extended_security |
3408 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
3409 | && (pSesInfo->server->secType == RawNTLMSSP)) { | |
5815449d | 3410 | cFYI(1, ("NTLMSSP sesssetup")); |
1da177e4 LT |
3411 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, |
3412 | pSesInfo, | |
3413 | &ntlmv2_flag, | |
3414 | nls_info); | |
3415 | if (!rc) { | |
3416 | if(ntlmv2_flag) { | |
3417 | char * v2_response; | |
175ec9e1 | 3418 | cFYI(1,("more secure NTLM ver2 hash")); |
1da177e4 LT |
3419 | if(CalcNTLMv2_partial_mac_key(pSesInfo, |
3420 | nls_info)) { | |
3421 | rc = -ENOMEM; | |
3422 | goto ss_err_exit; | |
3423 | } else | |
3424 | v2_response = kmalloc(16 + 64 /* blob */, GFP_KERNEL); | |
3425 | if(v2_response) { | |
3426 | CalcNTLMv2_response(pSesInfo,v2_response); | |
ad009ac9 SF |
3427 | /* if(first_time) |
3428 | cifs_calculate_ntlmv2_mac_key( | |
3429 | pSesInfo->server->mac_signing_key, | |
3430 | response, ntlm_session_key, */ | |
1da177e4 LT |
3431 | kfree(v2_response); |
3432 | /* BB Put dummy sig in SessSetup PDU? */ | |
3433 | } else { | |
3434 | rc = -ENOMEM; | |
3435 | goto ss_err_exit; | |
3436 | } | |
3437 | ||
3438 | } else { | |
3439 | SMBNTencrypt(pSesInfo->password, | |
3440 | pSesInfo->server->cryptKey, | |
3441 | ntlm_session_key); | |
3442 | ||
ad009ac9 SF |
3443 | if(first_time) |
3444 | cifs_calculate_mac_key( | |
3445 | pSesInfo->server->mac_signing_key, | |
3446 | ntlm_session_key, | |
3447 | pSesInfo->password); | |
1da177e4 LT |
3448 | } |
3449 | /* for better security the weaker lanman hash not sent | |
3450 | in AuthSessSetup so we no longer calculate it */ | |
3451 | ||
3452 | rc = CIFSNTLMSSPAuthSessSetup(xid, | |
3453 | pSesInfo, | |
3454 | ntlm_session_key, | |
3455 | ntlmv2_flag, | |
3456 | nls_info); | |
3457 | } | |
3458 | } else { /* old style NTLM 0.12 session setup */ | |
3459 | SMBNTencrypt(pSesInfo->password, | |
3460 | pSesInfo->server->cryptKey, | |
3461 | ntlm_session_key); | |
3462 | ||
ad009ac9 SF |
3463 | if(first_time) |
3464 | cifs_calculate_mac_key( | |
3465 | pSesInfo->server->mac_signing_key, | |
3466 | ntlm_session_key, pSesInfo->password); | |
3467 | ||
1da177e4 LT |
3468 | rc = CIFSSessSetup(xid, pSesInfo, |
3469 | ntlm_session_key, nls_info); | |
3470 | } | |
3471 | if (rc) { | |
3472 | cERROR(1,("Send error in SessSetup = %d",rc)); | |
3473 | } else { | |
3474 | cFYI(1,("CIFS Session Established successfully")); | |
3475 | pSesInfo->status = CifsGood; | |
3476 | } | |
3477 | } | |
3478 | ss_err_exit: | |
3479 | return rc; | |
3480 | } | |
3481 |