Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/connect.c | |
3 | * | |
75865f8c | 4 | * Copyright (C) International Business Machines Corp., 2002,2007 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * This library is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU Lesser General Public License as published | |
9 | * by the Free Software Foundation; either version 2.1 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This library is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
15 | * the GNU Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public License | |
18 | * along with this library; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
21 | #include <linux/fs.h> | |
22 | #include <linux/net.h> | |
23 | #include <linux/string.h> | |
24 | #include <linux/list.h> | |
25 | #include <linux/wait.h> | |
26 | #include <linux/ipv6.h> | |
27 | #include <linux/pagemap.h> | |
28 | #include <linux/ctype.h> | |
29 | #include <linux/utsname.h> | |
30 | #include <linux/mempool.h> | |
b8643e1b | 31 | #include <linux/delay.h> |
f191401f | 32 | #include <linux/completion.h> |
aaf737ad | 33 | #include <linux/kthread.h> |
0ae0efad | 34 | #include <linux/pagevec.h> |
7dfb7103 | 35 | #include <linux/freezer.h> |
1da177e4 LT |
36 | #include <asm/uaccess.h> |
37 | #include <asm/processor.h> | |
38 | #include "cifspdu.h" | |
39 | #include "cifsglob.h" | |
40 | #include "cifsproto.h" | |
41 | #include "cifs_unicode.h" | |
42 | #include "cifs_debug.h" | |
43 | #include "cifs_fs_sb.h" | |
44 | #include "ntlmssp.h" | |
45 | #include "nterr.h" | |
46 | #include "rfc1002pdu.h" | |
a2653eba | 47 | #include "cn_cifs.h" |
1da177e4 LT |
48 | |
49 | #define CIFS_PORT 445 | |
50 | #define RFC1001_PORT 139 | |
51 | ||
f191401f SF |
52 | static DECLARE_COMPLETION(cifsd_complete); |
53 | ||
1da177e4 LT |
54 | extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, |
55 | unsigned char *p24); | |
56 | ||
57 | extern mempool_t *cifs_req_poolp; | |
58 | ||
59 | struct smb_vol { | |
60 | char *username; | |
61 | char *password; | |
62 | char *domainname; | |
63 | char *UNC; | |
64 | char *UNCip; | |
65 | char *in6_addr; /* ipv6 address as human readable form of in6_addr */ | |
66 | char *iocharset; /* local code page for mapping to and from Unicode */ | |
67 | char source_rfc1001_name[16]; /* netbios name of client */ | |
a10faeb2 | 68 | char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */ |
1da177e4 LT |
69 | uid_t linux_uid; |
70 | gid_t linux_gid; | |
71 | mode_t file_mode; | |
72 | mode_t dir_mode; | |
189acaae | 73 | unsigned secFlg; |
1da177e4 LT |
74 | unsigned rw:1; |
75 | unsigned retry:1; | |
76 | unsigned intr:1; | |
77 | unsigned setuids:1; | |
4523cc30 SF |
78 | unsigned override_uid:1; |
79 | unsigned override_gid:1; | |
1da177e4 LT |
80 | unsigned noperm:1; |
81 | unsigned no_psx_acl:1; /* set if posix acl support should be disabled */ | |
0a4b92c0 | 82 | unsigned cifs_acl:1; |
1da177e4 LT |
83 | unsigned no_xattr:1; /* set if xattr (EA) support should be disabled*/ |
84 | unsigned server_ino:1; /* use inode numbers from server ie UniqueId */ | |
85 | unsigned direct_io:1; | |
6a0b4824 | 86 | unsigned remap:1; /* set to remap seven reserved chars in filenames */ |
ac67055e | 87 | unsigned posix_paths:1; /* unset to not ask for posix pathnames. */ |
d7245c2c | 88 | unsigned sfu_emul:1; |
bf820679 | 89 | unsigned nullauth:1; /* attempt to authenticate with null user */ |
c46fa8ac SF |
90 | unsigned nocase; /* request case insensitive filenames */ |
91 | unsigned nobrl; /* disable sending byte range locks to srv */ | |
1da177e4 LT |
92 | unsigned int rsize; |
93 | unsigned int wsize; | |
94 | unsigned int sockopt; | |
95 | unsigned short int port; | |
2fe87f02 | 96 | char * prepath; |
1da177e4 LT |
97 | }; |
98 | ||
99 | static int ipv4_connect(struct sockaddr_in *psin_server, | |
100 | struct socket **csocket, | |
a10faeb2 SF |
101 | char * netb_name, |
102 | char * server_netb_name); | |
1da177e4 LT |
103 | static int ipv6_connect(struct sockaddr_in6 *psin_server, |
104 | struct socket **csocket); | |
105 | ||
106 | ||
107 | /* | |
108 | * cifs tcp session reconnection | |
109 | * | |
110 | * mark tcp session as reconnecting so temporarily locked | |
111 | * mark all smb sessions as reconnecting for tcp session | |
112 | * reconnect tcp session | |
113 | * wake up waiters on reconnection? - (not needed currently) | |
114 | */ | |
115 | ||
2cd646a2 | 116 | static int |
1da177e4 LT |
117 | cifs_reconnect(struct TCP_Server_Info *server) |
118 | { | |
119 | int rc = 0; | |
120 | struct list_head *tmp; | |
121 | struct cifsSesInfo *ses; | |
122 | struct cifsTconInfo *tcon; | |
123 | struct mid_q_entry * mid_entry; | |
124 | ||
125 | spin_lock(&GlobalMid_Lock); | |
aaf737ad | 126 | if( kthread_should_stop() ) { |
1da177e4 LT |
127 | /* the demux thread will exit normally |
128 | next time through the loop */ | |
129 | spin_unlock(&GlobalMid_Lock); | |
130 | return rc; | |
131 | } else | |
132 | server->tcpStatus = CifsNeedReconnect; | |
133 | spin_unlock(&GlobalMid_Lock); | |
134 | server->maxBuf = 0; | |
135 | ||
e4eb295d | 136 | cFYI(1, ("Reconnecting tcp session")); |
1da177e4 LT |
137 | |
138 | /* before reconnecting the tcp session, mark the smb session (uid) | |
139 | and the tid bad so they are not used until reconnected */ | |
140 | read_lock(&GlobalSMBSeslock); | |
141 | list_for_each(tmp, &GlobalSMBSessionList) { | |
142 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
143 | if (ses->server) { | |
144 | if (ses->server == server) { | |
145 | ses->status = CifsNeedReconnect; | |
146 | ses->ipc_tid = 0; | |
147 | } | |
148 | } | |
149 | /* else tcp and smb sessions need reconnection */ | |
150 | } | |
151 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
152 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); | |
153 | if((tcon) && (tcon->ses) && (tcon->ses->server == server)) { | |
154 | tcon->tidStatus = CifsNeedReconnect; | |
155 | } | |
156 | } | |
157 | read_unlock(&GlobalSMBSeslock); | |
158 | /* do not want to be sending data on a socket we are freeing */ | |
159 | down(&server->tcpSem); | |
160 | if(server->ssocket) { | |
467a8f8d | 161 | cFYI(1, ("State: 0x%x Flags: 0x%lx", server->ssocket->state, |
1da177e4 LT |
162 | server->ssocket->flags)); |
163 | server->ssocket->ops->shutdown(server->ssocket,SEND_SHUTDOWN); | |
467a8f8d SF |
164 | cFYI(1, ("Post shutdown state: 0x%x Flags: 0x%lx", |
165 | server->ssocket->state, | |
1da177e4 LT |
166 | server->ssocket->flags)); |
167 | sock_release(server->ssocket); | |
168 | server->ssocket = NULL; | |
169 | } | |
170 | ||
171 | spin_lock(&GlobalMid_Lock); | |
172 | list_for_each(tmp, &server->pending_mid_q) { | |
173 | mid_entry = list_entry(tmp, struct | |
174 | mid_q_entry, | |
175 | qhead); | |
176 | if(mid_entry) { | |
177 | if(mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
09d1db5c SF |
178 | /* Mark other intransit requests as needing |
179 | retry so we do not immediately mark the | |
180 | session bad again (ie after we reconnect | |
181 | below) as they timeout too */ | |
1da177e4 LT |
182 | mid_entry->midState = MID_RETRY_NEEDED; |
183 | } | |
184 | } | |
185 | } | |
186 | spin_unlock(&GlobalMid_Lock); | |
187 | up(&server->tcpSem); | |
188 | ||
aaf737ad | 189 | while ( (!kthread_should_stop()) && (server->tcpStatus != CifsGood)) |
1da177e4 | 190 | { |
6c3d8909 | 191 | try_to_freeze(); |
1da177e4 LT |
192 | if(server->protocolType == IPV6) { |
193 | rc = ipv6_connect(&server->addr.sockAddr6,&server->ssocket); | |
194 | } else { | |
195 | rc = ipv4_connect(&server->addr.sockAddr, | |
196 | &server->ssocket, | |
a10faeb2 SF |
197 | server->workstation_RFC1001_name, |
198 | server->server_RFC1001_name); | |
1da177e4 LT |
199 | } |
200 | if(rc) { | |
467a8f8d | 201 | cFYI(1, ("reconnect error %d",rc)); |
0cb766ae | 202 | msleep(3000); |
1da177e4 LT |
203 | } else { |
204 | atomic_inc(&tcpSesReconnectCount); | |
205 | spin_lock(&GlobalMid_Lock); | |
aaf737ad | 206 | if( !kthread_should_stop() ) |
1da177e4 | 207 | server->tcpStatus = CifsGood; |
ad009ac9 SF |
208 | server->sequence_number = 0; |
209 | spin_unlock(&GlobalMid_Lock); | |
1da177e4 LT |
210 | /* atomic_set(&server->inFlight,0);*/ |
211 | wake_up(&server->response_q); | |
212 | } | |
213 | } | |
214 | return rc; | |
215 | } | |
216 | ||
e4eb295d SF |
217 | /* |
218 | return codes: | |
219 | 0 not a transact2, or all data present | |
220 | >0 transact2 with that much data missing | |
221 | -EINVAL = invalid transact2 | |
222 | ||
223 | */ | |
224 | static int check2ndT2(struct smb_hdr * pSMB, unsigned int maxBufSize) | |
225 | { | |
226 | struct smb_t2_rsp * pSMBt; | |
227 | int total_data_size; | |
228 | int data_in_this_rsp; | |
229 | int remaining; | |
230 | ||
231 | if(pSMB->Command != SMB_COM_TRANSACTION2) | |
232 | return 0; | |
233 | ||
234 | /* check for plausible wct, bcc and t2 data and parm sizes */ | |
235 | /* check for parm and data offset going beyond end of smb */ | |
236 | if(pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
467a8f8d | 237 | cFYI(1, ("invalid transact2 word count")); |
e4eb295d SF |
238 | return -EINVAL; |
239 | } | |
240 | ||
241 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
242 | ||
243 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
244 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
245 | ||
246 | remaining = total_data_size - data_in_this_rsp; | |
247 | ||
248 | if(remaining == 0) | |
249 | return 0; | |
250 | else if(remaining < 0) { | |
467a8f8d | 251 | cFYI(1, ("total data %d smaller than data in frame %d", |
e4eb295d SF |
252 | total_data_size, data_in_this_rsp)); |
253 | return -EINVAL; | |
254 | } else { | |
467a8f8d | 255 | cFYI(1, ("missing %d bytes from transact2, check next response", |
e4eb295d SF |
256 | remaining)); |
257 | if(total_data_size > maxBufSize) { | |
258 | cERROR(1,("TotalDataSize %d is over maximum buffer %d", | |
259 | total_data_size,maxBufSize)); | |
260 | return -EINVAL; | |
261 | } | |
262 | return remaining; | |
263 | } | |
264 | } | |
265 | ||
266 | static int coalesce_t2(struct smb_hdr * psecond, struct smb_hdr *pTargetSMB) | |
267 | { | |
268 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
269 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
270 | int total_data_size; | |
271 | int total_in_buf; | |
272 | int remaining; | |
273 | int total_in_buf2; | |
274 | char * data_area_of_target; | |
275 | char * data_area_of_buf2; | |
276 | __u16 byte_count; | |
277 | ||
278 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
279 | ||
280 | if(total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { | |
281 | cFYI(1,("total data sizes of primary and secondary t2 differ")); | |
282 | } | |
283 | ||
284 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
285 | ||
286 | remaining = total_data_size - total_in_buf; | |
287 | ||
288 | if(remaining < 0) | |
289 | return -EINVAL; | |
290 | ||
291 | if(remaining == 0) /* nothing to do, ignore */ | |
292 | return 0; | |
293 | ||
294 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); | |
295 | if(remaining < total_in_buf2) { | |
467a8f8d | 296 | cFYI(1, ("transact2 2nd response contains too much data")); |
e4eb295d SF |
297 | } |
298 | ||
299 | /* find end of first SMB data area */ | |
300 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + | |
301 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); | |
302 | /* validate target area */ | |
303 | ||
304 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
305 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); | |
306 | ||
307 | data_area_of_target += total_in_buf; | |
308 | ||
309 | /* copy second buffer into end of first buffer */ | |
310 | memcpy(data_area_of_target,data_area_of_buf2,total_in_buf2); | |
311 | total_in_buf += total_in_buf2; | |
312 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
313 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
314 | byte_count += total_in_buf2; | |
315 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
316 | ||
70ca734a | 317 | byte_count = pTargetSMB->smb_buf_length; |
e4eb295d SF |
318 | byte_count += total_in_buf2; |
319 | ||
320 | /* BB also add check that we are not beyond maximum buffer size */ | |
321 | ||
70ca734a | 322 | pTargetSMB->smb_buf_length = byte_count; |
e4eb295d SF |
323 | |
324 | if(remaining == total_in_buf2) { | |
467a8f8d | 325 | cFYI(1, ("found the last secondary response")); |
e4eb295d SF |
326 | return 0; /* we are done */ |
327 | } else /* more responses to go */ | |
328 | return 1; | |
329 | ||
330 | } | |
331 | ||
1da177e4 LT |
332 | static int |
333 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
334 | { | |
335 | int length; | |
336 | unsigned int pdu_length, total_read; | |
337 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
338 | struct smb_hdr *bigbuf = NULL; |
339 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
340 | struct msghdr smb_msg; |
341 | struct kvec iov; | |
342 | struct socket *csocket = server->ssocket; | |
343 | struct list_head *tmp; | |
344 | struct cifsSesInfo *ses; | |
345 | struct task_struct *task_to_wake = NULL; | |
346 | struct mid_q_entry *mid_entry; | |
70ca734a | 347 | char temp; |
b8643e1b | 348 | int isLargeBuf = FALSE; |
e4eb295d SF |
349 | int isMultiRsp; |
350 | int reconnect; | |
1da177e4 | 351 | |
1da177e4 LT |
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)) { |
467a8f8d | 428 | cFYI(1, ("cifsd thread killed")); |
1da177e4 LT |
429 | break; |
430 | } | |
467a8f8d | 431 | cFYI(1, ("Reconnect after unexpected peek error %d", |
57337e42 | 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 | ||
467a8f8d | 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) { |
467a8f8d | 466 | cFYI(1, ("Good RFC 1002 session rsp")); |
e4eb295d | 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 { | |
467a8f8d | 812 | cFYI(1, ("Null separator not allowed")); |
1da177e4 LT |
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); | |
467a8f8d | 1024 | cFYI(1, ("prefix path %s",vol->prepath)); |
2fe87f02 SF |
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 == ' ')) { | |
467a8f8d | 1114 | cFYI(1, ("empty server netbiosname specified")); |
a10faeb2 SF |
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? */ | |
467a8f8d | 1434 | cFYI(1, ("Socket created")); |
1da177e4 LT |
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; | |
75865f8c | 1653 | if (vol_info && vol_info->no_psx_acl) |
8af18971 | 1654 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
75865f8c | 1655 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
8af18971 SF |
1656 | cFYI(1,("negotiated posix acl support")); |
1657 | if(sb) | |
1658 | sb->s_flags |= MS_POSIXACL; | |
1659 | } | |
1660 | ||
75865f8c | 1661 | if (vol_info && vol_info->posix_paths == 0) |
8af18971 | 1662 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
75865f8c | 1663 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
8af18971 | 1664 | cFYI(1,("negotiate posix pathnames")); |
75865f8c | 1665 | if (sb) |
8af18971 SF |
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 */ | |
75865f8c | 1673 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
984acfe1 | 1674 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
75865f8c SF |
1675 | |
1676 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { | |
1677 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { | |
1678 | CIFS_SB(sb)->rsize = 127 * 1024; | |
1679 | #ifdef CONFIG_CIFS_DEBUG2 | |
1680 | cFYI(1,("larger reads not supported by srv")); | |
1681 | #endif | |
1682 | } | |
1683 | } | |
1684 | ||
984acfe1 | 1685 | |
8af18971 SF |
1686 | cFYI(1,("Negotiate caps 0x%x",(int)cap)); |
1687 | #ifdef CONFIG_CIFS_DEBUG2 | |
75865f8c | 1688 | if (cap & CIFS_UNIX_FCNTL_CAP) |
8af18971 | 1689 | cFYI(1,("FCNTL cap")); |
75865f8c | 1690 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
8af18971 | 1691 | cFYI(1,("EXTATTR cap")); |
75865f8c | 1692 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
8af18971 | 1693 | cFYI(1,("POSIX path cap")); |
75865f8c | 1694 | if (cap & CIFS_UNIX_XATTR_CAP) |
8af18971 | 1695 | cFYI(1,("XATTR cap")); |
75865f8c | 1696 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
8af18971 | 1697 | cFYI(1,("POSIX ACL cap")); |
75865f8c SF |
1698 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
1699 | cFYI(1,("very large read cap")); | |
1700 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) | |
1701 | cFYI(1,("very large write cap")); | |
8af18971 SF |
1702 | #endif /* CIFS_DEBUG2 */ |
1703 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
1704 | cFYI(1,("setting capabilities failed")); | |
1705 | } | |
1706 | } | |
1707 | } | |
1708 | ||
1da177e4 LT |
1709 | int |
1710 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1711 | char *mount_data, const char *devname) | |
1712 | { | |
1713 | int rc = 0; | |
1714 | int xid; | |
1715 | int address_type = AF_INET; | |
1716 | struct socket *csocket = NULL; | |
1717 | struct sockaddr_in sin_server; | |
1718 | struct sockaddr_in6 sin_server6; | |
1719 | struct smb_vol volume_info; | |
1720 | struct cifsSesInfo *pSesInfo = NULL; | |
1721 | struct cifsSesInfo *existingCifsSes = NULL; | |
1722 | struct cifsTconInfo *tcon = NULL; | |
1723 | struct TCP_Server_Info *srvTcp = NULL; | |
1724 | ||
1725 | xid = GetXid(); | |
1726 | ||
1727 | /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ | |
1728 | ||
1729 | memset(&volume_info,0,sizeof(struct smb_vol)); | |
1730 | if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { | |
f99d49ad JJ |
1731 | kfree(volume_info.UNC); |
1732 | kfree(volume_info.password); | |
2fe87f02 | 1733 | kfree(volume_info.prepath); |
1da177e4 LT |
1734 | FreeXid(xid); |
1735 | return -EINVAL; | |
1736 | } | |
1737 | ||
8426c39c JL |
1738 | if (volume_info.nullauth) { |
1739 | cFYI(1,("null user")); | |
1740 | volume_info.username = NULL; | |
1741 | } else if (volume_info.username) { | |
1da177e4 | 1742 | /* BB fixme parse for domain name here */ |
467a8f8d | 1743 | cFYI(1, ("Username: %s", volume_info.username)); |
1da177e4 | 1744 | } else { |
bf820679 | 1745 | cifserror("No username specified"); |
1da177e4 LT |
1746 | /* In userspace mount helper we can get user name from alternate |
1747 | locations such as env variables and files on disk */ | |
f99d49ad JJ |
1748 | kfree(volume_info.UNC); |
1749 | kfree(volume_info.password); | |
2fe87f02 | 1750 | kfree(volume_info.prepath); |
1da177e4 LT |
1751 | FreeXid(xid); |
1752 | return -EINVAL; | |
1753 | } | |
1754 | ||
1755 | if (volume_info.UNCip && volume_info.UNC) { | |
1756 | rc = cifs_inet_pton(AF_INET, volume_info.UNCip,&sin_server.sin_addr.s_addr); | |
1757 | ||
1758 | if(rc <= 0) { | |
1759 | /* not ipv4 address, try ipv6 */ | |
1760 | rc = cifs_inet_pton(AF_INET6,volume_info.UNCip,&sin_server6.sin6_addr.in6_u); | |
1761 | if(rc > 0) | |
1762 | address_type = AF_INET6; | |
1763 | } else { | |
1764 | address_type = AF_INET; | |
1765 | } | |
1766 | ||
1767 | if(rc <= 0) { | |
1768 | /* we failed translating address */ | |
f99d49ad JJ |
1769 | kfree(volume_info.UNC); |
1770 | kfree(volume_info.password); | |
2fe87f02 | 1771 | kfree(volume_info.prepath); |
1da177e4 LT |
1772 | FreeXid(xid); |
1773 | return -EINVAL; | |
1774 | } | |
1775 | ||
1776 | cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); | |
1777 | /* success */ | |
1778 | rc = 0; | |
1779 | } else if (volume_info.UNCip){ | |
1780 | /* BB using ip addr as server name connect to the DFS root below */ | |
1781 | cERROR(1,("Connecting to DFS root not implemented yet")); | |
f99d49ad JJ |
1782 | kfree(volume_info.UNC); |
1783 | kfree(volume_info.password); | |
2fe87f02 | 1784 | kfree(volume_info.prepath); |
1da177e4 LT |
1785 | FreeXid(xid); |
1786 | return -EINVAL; | |
1787 | } else /* which servers DFS root would we conect to */ { | |
1788 | cERROR(1, | |
bf820679 | 1789 | ("CIFS mount error: No UNC path (e.g. -o unc=//192.168.1.100/public) specified")); |
f99d49ad JJ |
1790 | kfree(volume_info.UNC); |
1791 | kfree(volume_info.password); | |
2fe87f02 | 1792 | kfree(volume_info.prepath); |
1da177e4 LT |
1793 | FreeXid(xid); |
1794 | return -EINVAL; | |
1795 | } | |
1796 | ||
1797 | /* this is needed for ASCII cp to Unicode converts */ | |
1798 | if(volume_info.iocharset == NULL) { | |
1799 | cifs_sb->local_nls = load_nls_default(); | |
1800 | /* load_nls_default can not return null */ | |
1801 | } else { | |
1802 | cifs_sb->local_nls = load_nls(volume_info.iocharset); | |
1803 | if(cifs_sb->local_nls == NULL) { | |
1804 | cERROR(1,("CIFS mount error: iocharset %s not found",volume_info.iocharset)); | |
f99d49ad JJ |
1805 | kfree(volume_info.UNC); |
1806 | kfree(volume_info.password); | |
2fe87f02 | 1807 | kfree(volume_info.prepath); |
1da177e4 LT |
1808 | FreeXid(xid); |
1809 | return -ELIBACC; | |
1810 | } | |
1811 | } | |
1812 | ||
1813 | if(address_type == AF_INET) | |
1814 | existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr, | |
1815 | NULL /* no ipv6 addr */, | |
1816 | volume_info.username, &srvTcp); | |
5858ae44 SF |
1817 | else if(address_type == AF_INET6) { |
1818 | cFYI(1,("looking for ipv6 address")); | |
1da177e4 LT |
1819 | existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */, |
1820 | &sin_server6.sin6_addr, | |
1821 | volume_info.username, &srvTcp); | |
5858ae44 | 1822 | } else { |
f99d49ad JJ |
1823 | kfree(volume_info.UNC); |
1824 | kfree(volume_info.password); | |
2fe87f02 | 1825 | kfree(volume_info.prepath); |
1da177e4 LT |
1826 | FreeXid(xid); |
1827 | return -EINVAL; | |
1828 | } | |
1829 | ||
1830 | ||
1831 | if (srvTcp) { | |
bf820679 | 1832 | cFYI(1, ("Existing tcp session with server found")); |
1da177e4 | 1833 | } else { /* create socket */ |
4523cc30 | 1834 | if (volume_info.port) |
1da177e4 LT |
1835 | sin_server.sin_port = htons(volume_info.port); |
1836 | else | |
1837 | sin_server.sin_port = 0; | |
5858ae44 SF |
1838 | if (address_type == AF_INET6) { |
1839 | cFYI(1,("attempting ipv6 connect")); | |
1840 | /* BB should we allow ipv6 on port 139? */ | |
1841 | /* other OS never observed in Wild doing 139 with v6 */ | |
1842 | rc = ipv6_connect(&sin_server6,&csocket); | |
1843 | } else | |
1844 | rc = ipv4_connect(&sin_server,&csocket, | |
a10faeb2 SF |
1845 | volume_info.source_rfc1001_name, |
1846 | volume_info.target_rfc1001_name); | |
1da177e4 LT |
1847 | if (rc < 0) { |
1848 | cERROR(1, | |
5858ae44 | 1849 | ("Error connecting to IPv4 socket. Aborting operation")); |
4523cc30 | 1850 | if (csocket != NULL) |
1da177e4 | 1851 | sock_release(csocket); |
f99d49ad JJ |
1852 | kfree(volume_info.UNC); |
1853 | kfree(volume_info.password); | |
2fe87f02 | 1854 | kfree(volume_info.prepath); |
1da177e4 LT |
1855 | FreeXid(xid); |
1856 | return rc; | |
1857 | } | |
1858 | ||
1859 | srvTcp = kmalloc(sizeof (struct TCP_Server_Info), GFP_KERNEL); | |
1860 | if (srvTcp == NULL) { | |
1861 | rc = -ENOMEM; | |
1862 | sock_release(csocket); | |
f99d49ad JJ |
1863 | kfree(volume_info.UNC); |
1864 | kfree(volume_info.password); | |
2fe87f02 | 1865 | kfree(volume_info.prepath); |
1da177e4 LT |
1866 | FreeXid(xid); |
1867 | return rc; | |
1868 | } else { | |
1869 | memset(srvTcp, 0, sizeof (struct TCP_Server_Info)); | |
1870 | memcpy(&srvTcp->addr.sockAddr, &sin_server, sizeof (struct sockaddr_in)); | |
1871 | atomic_set(&srvTcp->inFlight,0); | |
1872 | /* BB Add code for ipv6 case too */ | |
1873 | srvTcp->ssocket = csocket; | |
1874 | srvTcp->protocolType = IPV4; | |
1875 | init_waitqueue_head(&srvTcp->response_q); | |
1876 | init_waitqueue_head(&srvTcp->request_q); | |
1877 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
1878 | /* at this point we are the only ones with the pointer | |
1879 | to the struct since the kernel thread not created yet | |
1880 | so no need to spinlock this init of tcpStatus */ | |
1881 | srvTcp->tcpStatus = CifsNew; | |
1882 | init_MUTEX(&srvTcp->tcpSem); | |
aaf737ad | 1883 | srvTcp->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, srvTcp, "cifsd"); |
4523cc30 | 1884 | if ( IS_ERR(srvTcp->tsk) ) { |
aaf737ad IM |
1885 | rc = PTR_ERR(srvTcp->tsk); |
1886 | cERROR(1,("error %d create cifsd thread", rc)); | |
1887 | srvTcp->tsk = NULL; | |
1da177e4 | 1888 | sock_release(csocket); |
f99d49ad JJ |
1889 | kfree(volume_info.UNC); |
1890 | kfree(volume_info.password); | |
2fe87f02 | 1891 | kfree(volume_info.prepath); |
1da177e4 LT |
1892 | FreeXid(xid); |
1893 | return rc; | |
f191401f SF |
1894 | } |
1895 | wait_for_completion(&cifsd_complete); | |
1896 | rc = 0; | |
1da177e4 | 1897 | memcpy(srvTcp->workstation_RFC1001_name, volume_info.source_rfc1001_name,16); |
a10faeb2 | 1898 | memcpy(srvTcp->server_RFC1001_name, volume_info.target_rfc1001_name,16); |
ad009ac9 | 1899 | srvTcp->sequence_number = 0; |
1da177e4 LT |
1900 | } |
1901 | } | |
1902 | ||
1903 | if (existingCifsSes) { | |
1904 | pSesInfo = existingCifsSes; | |
bf820679 | 1905 | cFYI(1, ("Existing smb sess found")); |
f99d49ad | 1906 | kfree(volume_info.password); |
1da177e4 LT |
1907 | /* volume_info.UNC freed at end of function */ |
1908 | } else if (!rc) { | |
bf820679 | 1909 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 LT |
1910 | pSesInfo = sesInfoAlloc(); |
1911 | if (pSesInfo == NULL) | |
1912 | rc = -ENOMEM; | |
1913 | else { | |
1914 | pSesInfo->server = srvTcp; | |
1915 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
1916 | NIPQUAD(sin_server.sin_addr.s_addr)); | |
1917 | } | |
1918 | ||
1919 | if (!rc){ | |
1920 | /* volume_info.password freed at unmount */ | |
1921 | if (volume_info.password) | |
1922 | pSesInfo->password = volume_info.password; | |
1923 | if (volume_info.username) | |
1924 | strncpy(pSesInfo->userName, | |
1925 | volume_info.username,MAX_USERNAME_SIZE); | |
3979877e SF |
1926 | if (volume_info.domainname) { |
1927 | int len = strlen(volume_info.domainname); | |
1928 | pSesInfo->domainName = | |
1929 | kmalloc(len + 1, GFP_KERNEL); | |
4523cc30 | 1930 | if (pSesInfo->domainName) |
3979877e SF |
1931 | strcpy(pSesInfo->domainName, |
1932 | volume_info.domainname); | |
1933 | } | |
1da177e4 | 1934 | pSesInfo->linux_uid = volume_info.linux_uid; |
750d1151 | 1935 | pSesInfo->overrideSecFlg = volume_info.secFlg; |
1da177e4 | 1936 | down(&pSesInfo->sesSem); |
189acaae | 1937 | /* BB FIXME need to pass vol->secFlgs BB */ |
1da177e4 LT |
1938 | rc = cifs_setup_session(xid,pSesInfo, cifs_sb->local_nls); |
1939 | up(&pSesInfo->sesSem); | |
4523cc30 | 1940 | if (!rc) |
1da177e4 LT |
1941 | atomic_inc(&srvTcp->socketUseCount); |
1942 | } else | |
f99d49ad | 1943 | kfree(volume_info.password); |
1da177e4 LT |
1944 | } |
1945 | ||
1946 | /* search for existing tcon to this server share */ | |
1947 | if (!rc) { | |
4523cc30 | 1948 | if (volume_info.rsize > CIFSMaxBufSize) { |
0ae0efad SF |
1949 | cERROR(1,("rsize %d too large, using MaxBufSize", |
1950 | volume_info.rsize)); | |
1951 | cifs_sb->rsize = CIFSMaxBufSize; | |
75865f8c SF |
1952 | } else if ((volume_info.rsize) && |
1953 | (volume_info.rsize <= CIFSMaxBufSize)) | |
1da177e4 | 1954 | cifs_sb->rsize = volume_info.rsize; |
0ae0efad SF |
1955 | else /* default */ |
1956 | cifs_sb->rsize = CIFSMaxBufSize; | |
1957 | ||
4523cc30 | 1958 | if (volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { |
75865f8c | 1959 | cERROR(1,("wsize %d too large, using 4096 instead", |
0ae0efad SF |
1960 | volume_info.wsize)); |
1961 | cifs_sb->wsize = 4096; | |
4523cc30 | 1962 | } else if (volume_info.wsize) |
1da177e4 LT |
1963 | cifs_sb->wsize = volume_info.wsize; |
1964 | else | |
17cbbafe | 1965 | cifs_sb->wsize = |
1877c9ea SF |
1966 | min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE, |
1967 | 127*1024); | |
17cbbafe SF |
1968 | /* old default of CIFSMaxBufSize was too small now |
1969 | that SMB Write2 can send multiple pages in kvec. | |
1970 | RFC1001 does not describe what happens when frame | |
1971 | bigger than 128K is sent so use that as max in | |
1972 | conjunction with 52K kvec constraint on arch with 4K | |
1973 | page size */ | |
1974 | ||
4523cc30 | 1975 | if (cifs_sb->rsize < 2048) { |
6cec2aed SF |
1976 | cifs_sb->rsize = 2048; |
1977 | /* Windows ME may prefer this */ | |
467a8f8d | 1978 | cFYI(1, ("readsize set to minimum: 2048")); |
1da177e4 | 1979 | } |
2fe87f02 SF |
1980 | /* calculate prepath */ |
1981 | cifs_sb->prepath = volume_info.prepath; | |
4523cc30 | 1982 | if (cifs_sb->prepath) { |
2fe87f02 SF |
1983 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); |
1984 | cifs_sb->prepath[0] = CIFS_DIR_SEP(cifs_sb); | |
1985 | volume_info.prepath = NULL; | |
1986 | } else | |
1987 | cifs_sb->prepathlen = 0; | |
1da177e4 LT |
1988 | cifs_sb->mnt_uid = volume_info.linux_uid; |
1989 | cifs_sb->mnt_gid = volume_info.linux_gid; | |
1990 | cifs_sb->mnt_file_mode = volume_info.file_mode; | |
1991 | cifs_sb->mnt_dir_mode = volume_info.dir_mode; | |
467a8f8d SF |
1992 | cFYI(1, ("file mode: 0x%x dir mode: 0x%x", |
1993 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode)); | |
1da177e4 | 1994 | |
4523cc30 | 1995 | if (volume_info.noperm) |
1da177e4 | 1996 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; |
4523cc30 | 1997 | if (volume_info.setuids) |
1da177e4 | 1998 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; |
4523cc30 | 1999 | if (volume_info.server_ino) |
1da177e4 | 2000 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; |
4523cc30 | 2001 | if (volume_info.remap) |
6a0b4824 | 2002 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; |
4523cc30 | 2003 | if (volume_info.no_xattr) |
1da177e4 | 2004 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; |
4523cc30 | 2005 | if (volume_info.sfu_emul) |
d7245c2c | 2006 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; |
4523cc30 | 2007 | if (volume_info.nobrl) |
c46fa8ac | 2008 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; |
4523cc30 | 2009 | if (volume_info.cifs_acl) |
0a4b92c0 | 2010 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; |
4523cc30 SF |
2011 | if (volume_info.override_uid) |
2012 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; | |
2013 | if (volume_info.override_gid) | |
2014 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; | |
2015 | if (volume_info.direct_io) { | |
467a8f8d | 2016 | cFYI(1, ("mounting share using direct i/o")); |
1da177e4 LT |
2017 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
2018 | } | |
2019 | ||
2020 | tcon = | |
2021 | find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, | |
2022 | volume_info.username); | |
2023 | if (tcon) { | |
bf820679 | 2024 | cFYI(1, ("Found match on UNC path")); |
1da177e4 LT |
2025 | /* we can have only one retry value for a connection |
2026 | to a share so for resources mounted more than once | |
2027 | to the same server share the last value passed in | |
2028 | for the retry flag is used */ | |
2029 | tcon->retry = volume_info.retry; | |
d3485d37 | 2030 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
2031 | } else { |
2032 | tcon = tconInfoAlloc(); | |
2033 | if (tcon == NULL) | |
2034 | rc = -ENOMEM; | |
2035 | else { | |
8af18971 SF |
2036 | /* check for null share name ie connecting to |
2037 | * dfs root */ | |
1da177e4 | 2038 | |
8af18971 SF |
2039 | /* BB check if this works for exactly length |
2040 | * three strings */ | |
1da177e4 LT |
2041 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) |
2042 | && (strchr(volume_info.UNC + 3, '/') == | |
2043 | NULL)) { | |
737b758c | 2044 | rc = connect_to_dfs_path(xid, pSesInfo, |
8af18971 SF |
2045 | "", cifs_sb->local_nls, |
2046 | cifs_sb->mnt_cifs_flags & | |
2047 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
f99d49ad | 2048 | kfree(volume_info.UNC); |
1da177e4 LT |
2049 | FreeXid(xid); |
2050 | return -ENODEV; | |
2051 | } else { | |
8af18971 SF |
2052 | /* BB Do we need to wrap sesSem around |
2053 | * this TCon call and Unix SetFS as | |
2054 | * we do on SessSetup and reconnect? */ | |
1da177e4 LT |
2055 | rc = CIFSTCon(xid, pSesInfo, |
2056 | volume_info.UNC, | |
2057 | tcon, cifs_sb->local_nls); | |
2058 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
2059 | } | |
2060 | if (!rc) { | |
2061 | atomic_inc(&pSesInfo->inUse); | |
2062 | tcon->retry = volume_info.retry; | |
d3485d37 | 2063 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
2064 | } |
2065 | } | |
2066 | } | |
2067 | } | |
4523cc30 | 2068 | if (pSesInfo) { |
1da177e4 LT |
2069 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
2070 | sb->s_maxbytes = (u64) 1 << 63; | |
2071 | } else | |
2072 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
2073 | } | |
2074 | ||
8af18971 | 2075 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
1da177e4 LT |
2076 | sb->s_time_gran = 100; |
2077 | ||
2078 | /* on error free sesinfo and tcon struct if needed */ | |
2079 | if (rc) { | |
2080 | /* if session setup failed, use count is zero but | |
2081 | we still need to free cifsd thread */ | |
4523cc30 | 2082 | if (atomic_read(&srvTcp->socketUseCount) == 0) { |
1da177e4 LT |
2083 | spin_lock(&GlobalMid_Lock); |
2084 | srvTcp->tcpStatus = CifsExiting; | |
2085 | spin_unlock(&GlobalMid_Lock); | |
4523cc30 | 2086 | if (srvTcp->tsk) { |
28356a16 SF |
2087 | struct task_struct *tsk; |
2088 | /* If we could verify that kthread_stop would | |
2089 | always wake up processes blocked in | |
2090 | tcp in recv_mesg then we could remove the | |
2091 | send_sig call */ | |
5d9c7206 | 2092 | force_sig(SIGKILL,srvTcp->tsk); |
28356a16 SF |
2093 | tsk = srvTcp->tsk; |
2094 | if(tsk) | |
f7f7c31c | 2095 | kthread_stop(tsk); |
f191401f | 2096 | } |
1da177e4 LT |
2097 | } |
2098 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
2099 | if (tcon) /* up accidently freeing someone elses tcon struct */ | |
2100 | tconInfoFree(tcon); | |
2101 | if (existingCifsSes == NULL) { | |
2102 | if (pSesInfo) { | |
2103 | if ((pSesInfo->server) && | |
2104 | (pSesInfo->status == CifsGood)) { | |
2105 | int temp_rc; | |
2106 | temp_rc = CIFSSMBLogoff(xid, pSesInfo); | |
2107 | /* if the socketUseCount is now zero */ | |
4523cc30 | 2108 | if ((temp_rc == -ESHUTDOWN) && |
5d9c7206 J |
2109 | (pSesInfo->server) && |
2110 | (pSesInfo->server->tsk)) { | |
28356a16 | 2111 | struct task_struct *tsk; |
5d9c7206 J |
2112 | force_sig(SIGKILL, |
2113 | pSesInfo->server->tsk); | |
28356a16 | 2114 | tsk = pSesInfo->server->tsk; |
f7f7c31c | 2115 | if (tsk) |
28356a16 | 2116 | kthread_stop(tsk); |
f191401f | 2117 | } |
1da177e4 LT |
2118 | } else |
2119 | cFYI(1, ("No session or bad tcon")); | |
2120 | sesInfoFree(pSesInfo); | |
2121 | /* pSesInfo = NULL; */ | |
2122 | } | |
2123 | } | |
2124 | } else { | |
2125 | atomic_inc(&tcon->useCount); | |
2126 | cifs_sb->tcon = tcon; | |
2127 | tcon->ses = pSesInfo; | |
2128 | ||
82940a46 | 2129 | /* do not care if following two calls succeed - informational */ |
737b758c SF |
2130 | CIFSSMBQFSDeviceInfo(xid, tcon); |
2131 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
8af18971 SF |
2132 | |
2133 | /* tell server which Unix caps we support */ | |
2134 | if (tcon->ses->capabilities & CAP_UNIX) | |
2135 | reset_cifs_unix_caps(xid, tcon, sb, &volume_info); | |
75865f8c SF |
2136 | else if(cifs_sb->rsize > (1024 * 127)) { |
2137 | cifs_sb->rsize = 1024 * 127; | |
2138 | #ifdef CONFIG_CIFS_DEBUG2 | |
467a8f8d | 2139 | cFYI(1, ("no very large read support, rsize 127K")); |
75865f8c SF |
2140 | #endif |
2141 | ||
2142 | } | |
3e84469d SF |
2143 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
2144 | cifs_sb->wsize = min(cifs_sb->wsize, | |
2145 | (tcon->ses->server->maxBuf - | |
2146 | MAX_CIFS_HDR_SIZE)); | |
0ae0efad SF |
2147 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
2148 | cifs_sb->rsize = min(cifs_sb->rsize, | |
2149 | (tcon->ses->server->maxBuf - | |
2150 | MAX_CIFS_HDR_SIZE)); | |
1da177e4 LT |
2151 | } |
2152 | ||
2153 | /* volume_info.password is freed above when existing session found | |
2154 | (in which case it is not needed anymore) but when new sesion is created | |
2155 | the password ptr is put in the new session structure (in which case the | |
2156 | password will be freed at unmount time) */ | |
f99d49ad | 2157 | kfree(volume_info.UNC); |
2fe87f02 | 2158 | kfree(volume_info.prepath); |
1da177e4 LT |
2159 | FreeXid(xid); |
2160 | return rc; | |
2161 | } | |
2162 | ||
2163 | static int | |
2164 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 2165 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
2166 | const struct nls_table *nls_codepage) |
2167 | { | |
2168 | struct smb_hdr *smb_buffer; | |
2169 | struct smb_hdr *smb_buffer_response; | |
2170 | SESSION_SETUP_ANDX *pSMB; | |
2171 | SESSION_SETUP_ANDX *pSMBr; | |
2172 | char *bcc_ptr; | |
2173 | char *user; | |
2174 | char *domain; | |
2175 | int rc = 0; | |
2176 | int remaining_words = 0; | |
2177 | int bytes_returned = 0; | |
2178 | int len; | |
2179 | __u32 capabilities; | |
2180 | __u16 count; | |
2181 | ||
eeac8047 | 2182 | cFYI(1, ("In sesssetup")); |
4523cc30 | 2183 | if (ses == NULL) |
1da177e4 LT |
2184 | return -EINVAL; |
2185 | user = ses->userName; | |
2186 | domain = ses->domainName; | |
2187 | smb_buffer = cifs_buf_get(); | |
2188 | if (smb_buffer == NULL) { | |
2189 | return -ENOMEM; | |
2190 | } | |
2191 | smb_buffer_response = smb_buffer; | |
2192 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2193 | ||
2194 | /* send SMBsessionSetup here */ | |
2195 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2196 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2197 | ||
1982c344 | 2198 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2199 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2200 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2201 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2202 | ||
2203 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2204 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2205 | ||
2206 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2207 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2208 | if (ses->capabilities & CAP_UNICODE) { | |
2209 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2210 | capabilities |= CAP_UNICODE; | |
2211 | } | |
2212 | if (ses->capabilities & CAP_STATUS32) { | |
2213 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2214 | capabilities |= CAP_STATUS32; | |
2215 | } | |
2216 | if (ses->capabilities & CAP_DFS) { | |
2217 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2218 | capabilities |= CAP_DFS; | |
2219 | } | |
2220 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2221 | ||
2222 | pSMB->req_no_secext.CaseInsensitivePasswordLength = | |
7c7b25bc | 2223 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2224 | |
2225 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2226 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2227 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2228 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2229 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2230 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2231 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2232 | |
2233 | if (ses->capabilities & CAP_UNICODE) { | |
2234 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2235 | *bcc_ptr = 0; | |
2236 | bcc_ptr++; | |
2237 | } | |
4523cc30 | 2238 | if (user == NULL) |
3979877e | 2239 | bytes_returned = 0; /* skip null user */ |
1da177e4 LT |
2240 | else |
2241 | bytes_returned = | |
e89dc920 | 2242 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2243 | nls_codepage); |
2244 | /* convert number of 16 bit words to bytes */ | |
2245 | bcc_ptr += 2 * bytes_returned; | |
2246 | bcc_ptr += 2; /* trailing null */ | |
2247 | if (domain == NULL) | |
2248 | bytes_returned = | |
e89dc920 | 2249 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2250 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2251 | else | |
2252 | bytes_returned = | |
e89dc920 | 2253 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2254 | nls_codepage); |
2255 | bcc_ptr += 2 * bytes_returned; | |
2256 | bcc_ptr += 2; | |
2257 | bytes_returned = | |
e89dc920 | 2258 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2259 | 32, nls_codepage); |
2260 | bcc_ptr += 2 * bytes_returned; | |
2261 | bytes_returned = | |
e9ff3990 | 2262 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, |
1da177e4 LT |
2263 | 32, nls_codepage); |
2264 | bcc_ptr += 2 * bytes_returned; | |
2265 | bcc_ptr += 2; | |
2266 | bytes_returned = | |
e89dc920 | 2267 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2268 | 64, nls_codepage); |
2269 | bcc_ptr += 2 * bytes_returned; | |
2270 | bcc_ptr += 2; | |
2271 | } else { | |
4523cc30 | 2272 | if (user != NULL) { |
1da177e4 LT |
2273 | strncpy(bcc_ptr, user, 200); |
2274 | bcc_ptr += strnlen(user, 200); | |
2275 | } | |
2276 | *bcc_ptr = 0; | |
2277 | bcc_ptr++; | |
2278 | if (domain == NULL) { | |
2279 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2280 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2281 | } else { | |
2282 | strncpy(bcc_ptr, domain, 64); | |
2283 | bcc_ptr += strnlen(domain, 64); | |
2284 | *bcc_ptr = 0; | |
2285 | bcc_ptr++; | |
2286 | } | |
2287 | strcpy(bcc_ptr, "Linux version "); | |
2288 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2289 | strcpy(bcc_ptr, utsname()->release); |
2290 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2291 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2292 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2293 | } | |
2294 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2295 | smb_buffer->smb_buf_length += count; | |
2296 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2297 | ||
2298 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2299 | &bytes_returned, 1); | |
2300 | if (rc) { | |
2301 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2302 | } else if ((smb_buffer_response->WordCount == 3) | |
2303 | || (smb_buffer_response->WordCount == 4)) { | |
2304 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2305 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2306 | if (action & GUEST_LOGIN) | |
2307 | cFYI(1, (" Guest login")); /* do we want to mark SesInfo struct ? */ | |
2308 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format (le) */ | |
2309 | cFYI(1, ("UID = %d ", ses->Suid)); | |
2310 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2311 | bcc_ptr = pByteArea(smb_buffer_response); | |
2312 | if ((pSMBr->resp.hdr.WordCount == 3) | |
2313 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2314 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2315 | if (pSMBr->resp.hdr.WordCount == 4) | |
2316 | bcc_ptr += blob_len; | |
2317 | ||
2318 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2319 | if ((long) (bcc_ptr) % 2) { | |
2320 | remaining_words = | |
2321 | (BCC(smb_buffer_response) - 1) /2; | |
2322 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2323 | } else { | |
2324 | remaining_words = | |
2325 | BCC(smb_buffer_response) / 2; | |
2326 | } | |
2327 | len = | |
2328 | UniStrnlen((wchar_t *) bcc_ptr, | |
2329 | remaining_words - 1); | |
2330 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2331 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2332 | terminating last Unicode string in response */ | |
a424f8bf SF |
2333 | if(ses->serverOS) |
2334 | kfree(ses->serverOS); | |
e915fc49 | 2335 | ses->serverOS = kzalloc(2 * (len + 1), GFP_KERNEL); |
433dc24f SF |
2336 | if(ses->serverOS == NULL) |
2337 | goto sesssetup_nomem; | |
1da177e4 | 2338 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2339 | (__le16 *)bcc_ptr, len,nls_codepage); |
1da177e4 LT |
2340 | bcc_ptr += 2 * (len + 1); |
2341 | remaining_words -= len + 1; | |
2342 | ses->serverOS[2 * len] = 0; | |
2343 | ses->serverOS[1 + (2 * len)] = 0; | |
2344 | if (remaining_words > 0) { | |
2345 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2346 | remaining_words-1); | |
cd49b492 | 2347 | kfree(ses->serverNOS); |
e915fc49 | 2348 | ses->serverNOS = kzalloc(2 * (len + 1),GFP_KERNEL); |
433dc24f SF |
2349 | if(ses->serverNOS == NULL) |
2350 | goto sesssetup_nomem; | |
1da177e4 | 2351 | cifs_strfromUCS_le(ses->serverNOS, |
e89dc920 | 2352 | (__le16 *)bcc_ptr,len,nls_codepage); |
1da177e4 LT |
2353 | bcc_ptr += 2 * (len + 1); |
2354 | ses->serverNOS[2 * len] = 0; | |
2355 | ses->serverNOS[1 + (2 * len)] = 0; | |
2356 | if(strncmp(ses->serverNOS, | |
2357 | "NT LAN Manager 4",16) == 0) { | |
467a8f8d | 2358 | cFYI(1, ("NT4 server")); |
1da177e4 LT |
2359 | ses->flags |= CIFS_SES_NT4; |
2360 | } | |
2361 | remaining_words -= len + 1; | |
2362 | if (remaining_words > 0) { | |
433dc24f | 2363 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 2364 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ |
a424f8bf SF |
2365 | if(ses->serverDomain) |
2366 | kfree(ses->serverDomain); | |
1da177e4 | 2367 | ses->serverDomain = |
e915fc49 | 2368 | kzalloc(2*(len+1),GFP_KERNEL); |
433dc24f SF |
2369 | if(ses->serverDomain == NULL) |
2370 | goto sesssetup_nomem; | |
1da177e4 | 2371 | cifs_strfromUCS_le(ses->serverDomain, |
e89dc920 | 2372 | (__le16 *)bcc_ptr,len,nls_codepage); |
1da177e4 LT |
2373 | bcc_ptr += 2 * (len + 1); |
2374 | ses->serverDomain[2*len] = 0; | |
2375 | ses->serverDomain[1+(2*len)] = 0; | |
2376 | } /* else no more room so create dummy domain string */ | |
a424f8bf SF |
2377 | else { |
2378 | if(ses->serverDomain) | |
2379 | kfree(ses->serverDomain); | |
433dc24f | 2380 | ses->serverDomain = |
e915fc49 | 2381 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2382 | } |
1da177e4 | 2383 | } else { /* no room so create dummy domain and NOS string */ |
433dc24f SF |
2384 | /* if these kcallocs fail not much we |
2385 | can do, but better to not fail the | |
2386 | sesssetup itself */ | |
cd49b492 | 2387 | kfree(ses->serverDomain); |
1da177e4 | 2388 | ses->serverDomain = |
e915fc49 | 2389 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2390 | kfree(ses->serverNOS); |
1da177e4 | 2391 | ses->serverNOS = |
e915fc49 | 2392 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2393 | } |
2394 | } else { /* ASCII */ | |
2395 | len = strnlen(bcc_ptr, 1024); | |
2396 | if (((long) bcc_ptr + len) - (long) | |
2397 | pByteArea(smb_buffer_response) | |
2398 | <= BCC(smb_buffer_response)) { | |
cd49b492 | 2399 | kfree(ses->serverOS); |
e915fc49 | 2400 | ses->serverOS = kzalloc(len + 1,GFP_KERNEL); |
433dc24f SF |
2401 | if(ses->serverOS == NULL) |
2402 | goto sesssetup_nomem; | |
1da177e4 LT |
2403 | strncpy(ses->serverOS,bcc_ptr, len); |
2404 | ||
2405 | bcc_ptr += len; | |
2406 | bcc_ptr[0] = 0; /* null terminate the string */ | |
2407 | bcc_ptr++; | |
2408 | ||
2409 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2410 | kfree(ses->serverNOS); |
e915fc49 | 2411 | ses->serverNOS = kzalloc(len + 1,GFP_KERNEL); |
433dc24f SF |
2412 | if(ses->serverNOS == NULL) |
2413 | goto sesssetup_nomem; | |
1da177e4 LT |
2414 | strncpy(ses->serverNOS, bcc_ptr, len); |
2415 | bcc_ptr += len; | |
2416 | bcc_ptr[0] = 0; | |
2417 | bcc_ptr++; | |
2418 | ||
2419 | len = strnlen(bcc_ptr, 1024); | |
a424f8bf SF |
2420 | if(ses->serverDomain) |
2421 | kfree(ses->serverDomain); | |
e915fc49 | 2422 | ses->serverDomain = kzalloc(len + 1,GFP_KERNEL); |
433dc24f SF |
2423 | if(ses->serverDomain == NULL) |
2424 | goto sesssetup_nomem; | |
1da177e4 LT |
2425 | strncpy(ses->serverDomain, bcc_ptr, len); |
2426 | bcc_ptr += len; | |
2427 | bcc_ptr[0] = 0; | |
2428 | bcc_ptr++; | |
2429 | } else | |
2430 | cFYI(1, | |
2431 | ("Variable field of length %d extends beyond end of smb ", | |
2432 | len)); | |
2433 | } | |
2434 | } else { | |
2435 | cERROR(1, | |
2436 | (" Security Blob Length extends beyond end of SMB")); | |
2437 | } | |
2438 | } else { | |
2439 | cERROR(1, | |
2440 | (" Invalid Word count %d: ", | |
2441 | smb_buffer_response->WordCount)); | |
2442 | rc = -EIO; | |
2443 | } | |
433dc24f SF |
2444 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2445 | since that could make reconnection harder, and | |
2446 | reconnection might be needed to free memory */ | |
1da177e4 LT |
2447 | if (smb_buffer) |
2448 | cifs_buf_release(smb_buffer); | |
2449 | ||
2450 | return rc; | |
2451 | } | |
2452 | ||
1da177e4 LT |
2453 | static int |
2454 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
2455 | struct cifsSesInfo *ses, int * pNTLMv2_flag, | |
2456 | const struct nls_table *nls_codepage) | |
2457 | { | |
2458 | struct smb_hdr *smb_buffer; | |
2459 | struct smb_hdr *smb_buffer_response; | |
2460 | SESSION_SETUP_ANDX *pSMB; | |
2461 | SESSION_SETUP_ANDX *pSMBr; | |
2462 | char *bcc_ptr; | |
2463 | char *domain; | |
2464 | int rc = 0; | |
2465 | int remaining_words = 0; | |
2466 | int bytes_returned = 0; | |
2467 | int len; | |
2468 | int SecurityBlobLength = sizeof (NEGOTIATE_MESSAGE); | |
2469 | PNEGOTIATE_MESSAGE SecurityBlob; | |
2470 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2471 | __u32 negotiate_flags, capabilities; | |
2472 | __u16 count; | |
2473 | ||
12b3b8ff | 2474 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
1da177e4 LT |
2475 | if(ses == NULL) |
2476 | return -EINVAL; | |
2477 | domain = ses->domainName; | |
2478 | *pNTLMv2_flag = FALSE; | |
2479 | smb_buffer = cifs_buf_get(); | |
2480 | if (smb_buffer == NULL) { | |
2481 | return -ENOMEM; | |
2482 | } | |
2483 | smb_buffer_response = smb_buffer; | |
2484 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2485 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2486 | ||
2487 | /* send SMBsessionSetup here */ | |
2488 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2489 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2490 | |
2491 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2492 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2493 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2494 | ||
2495 | pSMB->req.AndXCommand = 0xFF; | |
2496 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2497 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2498 | ||
2499 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2500 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2501 | ||
2502 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2503 | CAP_EXTENDED_SECURITY; | |
2504 | if (ses->capabilities & CAP_UNICODE) { | |
2505 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2506 | capabilities |= CAP_UNICODE; | |
2507 | } | |
2508 | if (ses->capabilities & CAP_STATUS32) { | |
2509 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2510 | capabilities |= CAP_STATUS32; | |
2511 | } | |
2512 | if (ses->capabilities & CAP_DFS) { | |
2513 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2514 | capabilities |= CAP_DFS; | |
2515 | } | |
2516 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2517 | ||
2518 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2519 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2520 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2521 | SecurityBlob->MessageType = NtLmNegotiate; | |
2522 | negotiate_flags = | |
2523 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2524 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2525 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 LT |
2526 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
2527 | if(sign_CIFS_PDUs) | |
2528 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; | |
3979877e SF |
2529 | /* if(ntlmv2_support) |
2530 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ | |
1da177e4 LT |
2531 | /* setup pointers to domain name and workstation name */ |
2532 | bcc_ptr += SecurityBlobLength; | |
2533 | ||
2534 | SecurityBlob->WorkstationName.Buffer = 0; | |
2535 | SecurityBlob->WorkstationName.Length = 0; | |
2536 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2537 | ||
12b3b8ff SF |
2538 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2539 | along with username on auth request (ie the response to challenge) */ | |
2540 | SecurityBlob->DomainName.Buffer = 0; | |
2541 | SecurityBlob->DomainName.Length = 0; | |
2542 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2543 | if (ses->capabilities & CAP_UNICODE) { |
2544 | if ((long) bcc_ptr % 2) { | |
2545 | *bcc_ptr = 0; | |
2546 | bcc_ptr++; | |
2547 | } | |
2548 | ||
2549 | bytes_returned = | |
e89dc920 | 2550 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2551 | 32, nls_codepage); |
2552 | bcc_ptr += 2 * bytes_returned; | |
2553 | bytes_returned = | |
e9ff3990 | 2554 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2555 | nls_codepage); |
2556 | bcc_ptr += 2 * bytes_returned; | |
2557 | bcc_ptr += 2; /* null terminate Linux version */ | |
2558 | bytes_returned = | |
e89dc920 | 2559 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2560 | 64, nls_codepage); |
2561 | bcc_ptr += 2 * bytes_returned; | |
2562 | *(bcc_ptr + 1) = 0; | |
2563 | *(bcc_ptr + 2) = 0; | |
2564 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2565 | *(bcc_ptr + 1) = 0; | |
2566 | *(bcc_ptr + 2) = 0; | |
2567 | bcc_ptr += 2; /* null domain */ | |
2568 | } else { /* ASCII */ | |
2569 | strcpy(bcc_ptr, "Linux version "); | |
2570 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2571 | strcpy(bcc_ptr, utsname()->release); |
2572 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2573 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2574 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2575 | bcc_ptr++; /* empty domain field */ | |
2576 | *bcc_ptr = 0; | |
2577 | } | |
2578 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2579 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2580 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2581 | smb_buffer->smb_buf_length += count; | |
2582 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2583 | ||
2584 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2585 | &bytes_returned, 1); | |
2586 | ||
2587 | if (smb_buffer_response->Status.CifsError == | |
2588 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2589 | rc = 0; | |
2590 | ||
2591 | if (rc) { | |
2592 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2593 | } else if ((smb_buffer_response->WordCount == 3) | |
2594 | || (smb_buffer_response->WordCount == 4)) { | |
2595 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2596 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2597 | ||
2598 | if (action & GUEST_LOGIN) | |
2599 | cFYI(1, (" Guest login")); | |
2600 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
2601 | ||
2602 | bcc_ptr = pByteArea(smb_buffer_response); | |
2603 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2604 | ||
2605 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2606 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2607 | cFYI(1, | |
2608 | ("Unexpected NTLMSSP message type received %d", | |
2609 | SecurityBlob2->MessageType)); | |
2610 | } else if (ses) { | |
2611 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ | |
12b3b8ff | 2612 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2613 | if ((pSMBr->resp.hdr.WordCount == 3) |
2614 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2615 | && (blob_len < | |
2616 | pSMBr->resp.ByteCount))) { | |
2617 | ||
2618 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2619 | bcc_ptr += blob_len; | |
12b3b8ff | 2620 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2621 | blob_len)); |
2622 | } | |
2623 | ||
12b3b8ff | 2624 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2625 | |
2626 | memcpy(ses->server->cryptKey, | |
2627 | SecurityBlob2->Challenge, | |
2628 | CIFS_CRYPTO_KEY_SIZE); | |
12b3b8ff SF |
2629 | if(SecurityBlob2->NegotiateFlags & |
2630 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) | |
1da177e4 LT |
2631 | *pNTLMv2_flag = TRUE; |
2632 | ||
2633 | if((SecurityBlob2->NegotiateFlags & | |
2634 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
2635 | || (sign_CIFS_PDUs > 1)) | |
2636 | ses->server->secMode |= | |
2637 | SECMODE_SIGN_REQUIRED; | |
2638 | if ((SecurityBlob2->NegotiateFlags & | |
2639 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) | |
2640 | ses->server->secMode |= | |
2641 | SECMODE_SIGN_ENABLED; | |
2642 | ||
2643 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2644 | if ((long) (bcc_ptr) % 2) { | |
2645 | remaining_words = | |
2646 | (BCC(smb_buffer_response) | |
2647 | - 1) / 2; | |
2648 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2649 | } else { | |
2650 | remaining_words = | |
2651 | BCC | |
2652 | (smb_buffer_response) / 2; | |
2653 | } | |
2654 | len = | |
2655 | UniStrnlen((wchar_t *) bcc_ptr, | |
2656 | remaining_words - 1); | |
2657 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2658 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2659 | terminating last Unicode string in response */ | |
a424f8bf SF |
2660 | if(ses->serverOS) |
2661 | kfree(ses->serverOS); | |
1da177e4 | 2662 | ses->serverOS = |
e915fc49 | 2663 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2664 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2665 | (__le16 *) |
1da177e4 LT |
2666 | bcc_ptr, len, |
2667 | nls_codepage); | |
2668 | bcc_ptr += 2 * (len + 1); | |
2669 | remaining_words -= len + 1; | |
2670 | ses->serverOS[2 * len] = 0; | |
2671 | ses->serverOS[1 + (2 * len)] = 0; | |
2672 | if (remaining_words > 0) { | |
2673 | len = UniStrnlen((wchar_t *) | |
2674 | bcc_ptr, | |
2675 | remaining_words | |
2676 | - 1); | |
cd49b492 | 2677 | kfree(ses->serverNOS); |
1da177e4 | 2678 | ses->serverNOS = |
e915fc49 | 2679 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2680 | GFP_KERNEL); |
2681 | cifs_strfromUCS_le(ses-> | |
2682 | serverNOS, | |
e89dc920 | 2683 | (__le16 *) |
1da177e4 LT |
2684 | bcc_ptr, |
2685 | len, | |
2686 | nls_codepage); | |
2687 | bcc_ptr += 2 * (len + 1); | |
2688 | ses->serverNOS[2 * len] = 0; | |
2689 | ses->serverNOS[1 + | |
2690 | (2 * len)] = 0; | |
2691 | remaining_words -= len + 1; | |
2692 | if (remaining_words > 0) { | |
2693 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
2694 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ | |
cd49b492 | 2695 | kfree(ses->serverDomain); |
1da177e4 | 2696 | ses->serverDomain = |
e915fc49 | 2697 | kzalloc(2 * |
1da177e4 LT |
2698 | (len + |
2699 | 1), | |
2700 | GFP_KERNEL); | |
2701 | cifs_strfromUCS_le | |
e89dc920 SF |
2702 | (ses->serverDomain, |
2703 | (__le16 *)bcc_ptr, | |
2704 | len, nls_codepage); | |
1da177e4 LT |
2705 | bcc_ptr += |
2706 | 2 * (len + 1); | |
e89dc920 | 2707 | ses->serverDomain[2*len] |
1da177e4 | 2708 | = 0; |
e89dc920 SF |
2709 | ses->serverDomain |
2710 | [1 + (2 * len)] | |
1da177e4 LT |
2711 | = 0; |
2712 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 2713 | else { |
cd49b492 | 2714 | kfree(ses->serverDomain); |
1da177e4 | 2715 | ses->serverDomain = |
e915fc49 | 2716 | kzalloc(2, |
1da177e4 | 2717 | GFP_KERNEL); |
a424f8bf | 2718 | } |
1da177e4 | 2719 | } else { /* no room so create dummy domain and NOS string */ |
cd49b492 | 2720 | kfree(ses->serverDomain); |
1da177e4 | 2721 | ses->serverDomain = |
e915fc49 | 2722 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2723 | kfree(ses->serverNOS); |
1da177e4 | 2724 | ses->serverNOS = |
e915fc49 | 2725 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2726 | } |
2727 | } else { /* ASCII */ | |
2728 | len = strnlen(bcc_ptr, 1024); | |
2729 | if (((long) bcc_ptr + len) - (long) | |
2730 | pByteArea(smb_buffer_response) | |
2731 | <= BCC(smb_buffer_response)) { | |
a424f8bf SF |
2732 | if(ses->serverOS) |
2733 | kfree(ses->serverOS); | |
1da177e4 | 2734 | ses->serverOS = |
e915fc49 | 2735 | kzalloc(len + 1, |
1da177e4 LT |
2736 | GFP_KERNEL); |
2737 | strncpy(ses->serverOS, | |
2738 | bcc_ptr, len); | |
2739 | ||
2740 | bcc_ptr += len; | |
2741 | bcc_ptr[0] = 0; /* null terminate string */ | |
2742 | bcc_ptr++; | |
2743 | ||
2744 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2745 | kfree(ses->serverNOS); |
1da177e4 | 2746 | ses->serverNOS = |
e915fc49 | 2747 | kzalloc(len + 1, |
1da177e4 LT |
2748 | GFP_KERNEL); |
2749 | strncpy(ses->serverNOS, bcc_ptr, len); | |
2750 | bcc_ptr += len; | |
2751 | bcc_ptr[0] = 0; | |
2752 | bcc_ptr++; | |
2753 | ||
2754 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2755 | kfree(ses->serverDomain); |
1da177e4 | 2756 | ses->serverDomain = |
e915fc49 | 2757 | kzalloc(len + 1, |
1da177e4 LT |
2758 | GFP_KERNEL); |
2759 | strncpy(ses->serverDomain, bcc_ptr, len); | |
2760 | bcc_ptr += len; | |
2761 | bcc_ptr[0] = 0; | |
2762 | bcc_ptr++; | |
2763 | } else | |
2764 | cFYI(1, | |
12b3b8ff | 2765 | ("Variable field of length %d extends beyond end of smb", |
1da177e4 LT |
2766 | len)); |
2767 | } | |
2768 | } else { | |
2769 | cERROR(1, | |
2770 | (" Security Blob Length extends beyond end of SMB")); | |
2771 | } | |
2772 | } else { | |
2773 | cERROR(1, ("No session structure passed in.")); | |
2774 | } | |
2775 | } else { | |
2776 | cERROR(1, | |
5815449d | 2777 | (" Invalid Word count %d:", |
1da177e4 LT |
2778 | smb_buffer_response->WordCount)); |
2779 | rc = -EIO; | |
2780 | } | |
2781 | ||
2782 | if (smb_buffer) | |
2783 | cifs_buf_release(smb_buffer); | |
2784 | ||
2785 | return rc; | |
2786 | } | |
2787 | static int | |
2788 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
2789 | char *ntlm_session_key, int ntlmv2_flag, | |
2790 | const struct nls_table *nls_codepage) | |
2791 | { | |
2792 | struct smb_hdr *smb_buffer; | |
2793 | struct smb_hdr *smb_buffer_response; | |
2794 | SESSION_SETUP_ANDX *pSMB; | |
2795 | SESSION_SETUP_ANDX *pSMBr; | |
2796 | char *bcc_ptr; | |
2797 | char *user; | |
2798 | char *domain; | |
2799 | int rc = 0; | |
2800 | int remaining_words = 0; | |
2801 | int bytes_returned = 0; | |
2802 | int len; | |
2803 | int SecurityBlobLength = sizeof (AUTHENTICATE_MESSAGE); | |
2804 | PAUTHENTICATE_MESSAGE SecurityBlob; | |
2805 | __u32 negotiate_flags, capabilities; | |
2806 | __u16 count; | |
2807 | ||
2808 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
2809 | if(ses == NULL) | |
2810 | return -EINVAL; | |
2811 | user = ses->userName; | |
2812 | domain = ses->domainName; | |
2813 | smb_buffer = cifs_buf_get(); | |
2814 | if (smb_buffer == NULL) { | |
2815 | return -ENOMEM; | |
2816 | } | |
2817 | smb_buffer_response = smb_buffer; | |
2818 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2819 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2820 | ||
2821 | /* send SMBsessionSetup here */ | |
2822 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2823 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2824 | |
2825 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2826 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
2827 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2828 | pSMB->req.AndXCommand = 0xFF; | |
2829 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2830 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2831 | ||
2832 | pSMB->req.hdr.Uid = ses->Suid; | |
2833 | ||
2834 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2835 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2836 | ||
2837 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2838 | CAP_EXTENDED_SECURITY; | |
2839 | if (ses->capabilities & CAP_UNICODE) { | |
2840 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2841 | capabilities |= CAP_UNICODE; | |
2842 | } | |
2843 | if (ses->capabilities & CAP_STATUS32) { | |
2844 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2845 | capabilities |= CAP_STATUS32; | |
2846 | } | |
2847 | if (ses->capabilities & CAP_DFS) { | |
2848 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2849 | capabilities |= CAP_DFS; | |
2850 | } | |
2851 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2852 | ||
2853 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2854 | SecurityBlob = (PAUTHENTICATE_MESSAGE) bcc_ptr; | |
2855 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2856 | SecurityBlob->MessageType = NtLmAuthenticate; | |
2857 | bcc_ptr += SecurityBlobLength; | |
2858 | negotiate_flags = | |
2859 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | | |
2860 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
2861 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
2862 | if(sign_CIFS_PDUs) | |
2863 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; | |
2864 | if(ntlmv2_flag) | |
2865 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; | |
2866 | ||
2867 | /* setup pointers to domain name and workstation name */ | |
2868 | ||
2869 | SecurityBlob->WorkstationName.Buffer = 0; | |
2870 | SecurityBlob->WorkstationName.Length = 0; | |
2871 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2872 | SecurityBlob->SessionKey.Length = 0; | |
2873 | SecurityBlob->SessionKey.MaximumLength = 0; | |
2874 | SecurityBlob->SessionKey.Buffer = 0; | |
2875 | ||
2876 | SecurityBlob->LmChallengeResponse.Length = 0; | |
2877 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
2878 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
2879 | ||
2880 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 2881 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2882 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
2883 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
2884 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
2885 | SecurityBlob->NtChallengeResponse.Buffer = |
2886 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
2887 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
2888 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2889 | |
2890 | if (ses->capabilities & CAP_UNICODE) { | |
2891 | if (domain == NULL) { | |
2892 | SecurityBlob->DomainName.Buffer = 0; | |
2893 | SecurityBlob->DomainName.Length = 0; | |
2894 | SecurityBlob->DomainName.MaximumLength = 0; | |
2895 | } else { | |
2896 | __u16 len = | |
e89dc920 | 2897 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2898 | nls_codepage); |
2899 | len *= 2; | |
2900 | SecurityBlob->DomainName.MaximumLength = | |
2901 | cpu_to_le16(len); | |
2902 | SecurityBlob->DomainName.Buffer = | |
2903 | cpu_to_le32(SecurityBlobLength); | |
2904 | bcc_ptr += len; | |
2905 | SecurityBlobLength += len; | |
2906 | SecurityBlob->DomainName.Length = | |
2907 | cpu_to_le16(len); | |
2908 | } | |
2909 | if (user == NULL) { | |
2910 | SecurityBlob->UserName.Buffer = 0; | |
2911 | SecurityBlob->UserName.Length = 0; | |
2912 | SecurityBlob->UserName.MaximumLength = 0; | |
2913 | } else { | |
2914 | __u16 len = | |
e89dc920 | 2915 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 LT |
2916 | nls_codepage); |
2917 | len *= 2; | |
2918 | SecurityBlob->UserName.MaximumLength = | |
2919 | cpu_to_le16(len); | |
2920 | SecurityBlob->UserName.Buffer = | |
2921 | cpu_to_le32(SecurityBlobLength); | |
2922 | bcc_ptr += len; | |
2923 | SecurityBlobLength += len; | |
2924 | SecurityBlob->UserName.Length = | |
2925 | cpu_to_le16(len); | |
2926 | } | |
2927 | ||
e89dc920 | 2928 | /* SecurityBlob->WorkstationName.Length = cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); |
1da177e4 LT |
2929 | SecurityBlob->WorkstationName.Length *= 2; |
2930 | SecurityBlob->WorkstationName.MaximumLength = cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
2931 | SecurityBlob->WorkstationName.Buffer = cpu_to_le32(SecurityBlobLength); | |
2932 | bcc_ptr += SecurityBlob->WorkstationName.Length; | |
2933 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
2934 | SecurityBlob->WorkstationName.Length = cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
2935 | ||
2936 | if ((long) bcc_ptr % 2) { | |
2937 | *bcc_ptr = 0; | |
2938 | bcc_ptr++; | |
2939 | } | |
2940 | bytes_returned = | |
e89dc920 | 2941 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2942 | 32, nls_codepage); |
2943 | bcc_ptr += 2 * bytes_returned; | |
2944 | bytes_returned = | |
e9ff3990 | 2945 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2946 | nls_codepage); |
2947 | bcc_ptr += 2 * bytes_returned; | |
2948 | bcc_ptr += 2; /* null term version string */ | |
2949 | bytes_returned = | |
e89dc920 | 2950 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2951 | 64, nls_codepage); |
2952 | bcc_ptr += 2 * bytes_returned; | |
2953 | *(bcc_ptr + 1) = 0; | |
2954 | *(bcc_ptr + 2) = 0; | |
2955 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2956 | *(bcc_ptr + 1) = 0; | |
2957 | *(bcc_ptr + 2) = 0; | |
2958 | bcc_ptr += 2; /* null domain */ | |
2959 | } else { /* ASCII */ | |
2960 | if (domain == NULL) { | |
2961 | SecurityBlob->DomainName.Buffer = 0; | |
2962 | SecurityBlob->DomainName.Length = 0; | |
2963 | SecurityBlob->DomainName.MaximumLength = 0; | |
2964 | } else { | |
2965 | __u16 len; | |
2966 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; | |
2967 | strncpy(bcc_ptr, domain, 63); | |
2968 | len = strnlen(domain, 64); | |
2969 | SecurityBlob->DomainName.MaximumLength = | |
2970 | cpu_to_le16(len); | |
2971 | SecurityBlob->DomainName.Buffer = | |
2972 | cpu_to_le32(SecurityBlobLength); | |
2973 | bcc_ptr += len; | |
2974 | SecurityBlobLength += len; | |
2975 | SecurityBlob->DomainName.Length = cpu_to_le16(len); | |
2976 | } | |
2977 | if (user == NULL) { | |
2978 | SecurityBlob->UserName.Buffer = 0; | |
2979 | SecurityBlob->UserName.Length = 0; | |
2980 | SecurityBlob->UserName.MaximumLength = 0; | |
2981 | } else { | |
2982 | __u16 len; | |
2983 | strncpy(bcc_ptr, user, 63); | |
2984 | len = strnlen(user, 64); | |
2985 | SecurityBlob->UserName.MaximumLength = | |
2986 | cpu_to_le16(len); | |
2987 | SecurityBlob->UserName.Buffer = | |
2988 | cpu_to_le32(SecurityBlobLength); | |
2989 | bcc_ptr += len; | |
2990 | SecurityBlobLength += len; | |
2991 | SecurityBlob->UserName.Length = cpu_to_le16(len); | |
2992 | } | |
2993 | /* BB fill in our workstation name if known BB */ | |
2994 | ||
2995 | strcpy(bcc_ptr, "Linux version "); | |
2996 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2997 | strcpy(bcc_ptr, utsname()->release); |
2998 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2999 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
3000 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
3001 | bcc_ptr++; /* null domain */ | |
3002 | *bcc_ptr = 0; | |
3003 | } | |
3004 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
3005 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
3006 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
3007 | smb_buffer->smb_buf_length += count; | |
3008 | pSMB->req.ByteCount = cpu_to_le16(count); | |
3009 | ||
3010 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
3011 | &bytes_returned, 1); | |
3012 | if (rc) { | |
3013 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
3014 | } else if ((smb_buffer_response->WordCount == 3) | |
3015 | || (smb_buffer_response->WordCount == 4)) { | |
3016 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
3017 | __u16 blob_len = | |
3018 | le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
3019 | if (action & GUEST_LOGIN) | |
3020 | cFYI(1, (" Guest login")); /* BB do we want to set anything in SesInfo struct ? */ | |
3021 | /* if(SecurityBlob2->MessageType != NtLm??){ | |
3022 | cFYI("Unexpected message type on auth response is %d ")); | |
3023 | } */ | |
3024 | if (ses) { | |
3025 | cFYI(1, | |
3026 | ("Does UID on challenge %d match auth response UID %d ", | |
3027 | ses->Suid, smb_buffer_response->Uid)); | |
3028 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format */ | |
3029 | bcc_ptr = pByteArea(smb_buffer_response); | |
3030 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
3031 | if ((pSMBr->resp.hdr.WordCount == 3) | |
3032 | || ((pSMBr->resp.hdr.WordCount == 4) | |
3033 | && (blob_len < | |
3034 | pSMBr->resp.ByteCount))) { | |
3035 | if (pSMBr->resp.hdr.WordCount == 4) { | |
3036 | bcc_ptr += | |
3037 | blob_len; | |
3038 | cFYI(1, | |
3039 | ("Security Blob Length %d ", | |
3040 | blob_len)); | |
3041 | } | |
3042 | ||
3043 | cFYI(1, | |
3044 | ("NTLMSSP response to Authenticate ")); | |
3045 | ||
3046 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3047 | if ((long) (bcc_ptr) % 2) { | |
3048 | remaining_words = | |
3049 | (BCC(smb_buffer_response) | |
3050 | - 1) / 2; | |
3051 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
3052 | } else { | |
3053 | remaining_words = BCC(smb_buffer_response) / 2; | |
3054 | } | |
3055 | len = | |
3056 | UniStrnlen((wchar_t *) bcc_ptr,remaining_words - 1); | |
3057 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
3058 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
3059 | terminating last Unicode string in response */ | |
a424f8bf | 3060 | if(ses->serverOS) |
08775834 | 3061 | kfree(ses->serverOS); |
1da177e4 | 3062 | ses->serverOS = |
e915fc49 | 3063 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 3064 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 3065 | (__le16 *) |
1da177e4 LT |
3066 | bcc_ptr, len, |
3067 | nls_codepage); | |
3068 | bcc_ptr += 2 * (len + 1); | |
3069 | remaining_words -= len + 1; | |
3070 | ses->serverOS[2 * len] = 0; | |
3071 | ses->serverOS[1 + (2 * len)] = 0; | |
3072 | if (remaining_words > 0) { | |
3073 | len = UniStrnlen((wchar_t *) | |
3074 | bcc_ptr, | |
3075 | remaining_words | |
3076 | - 1); | |
cd49b492 | 3077 | kfree(ses->serverNOS); |
1da177e4 | 3078 | ses->serverNOS = |
e915fc49 | 3079 | kzalloc(2 * (len + 1), |
1da177e4 LT |
3080 | GFP_KERNEL); |
3081 | cifs_strfromUCS_le(ses-> | |
3082 | serverNOS, | |
e89dc920 | 3083 | (__le16 *) |
1da177e4 LT |
3084 | bcc_ptr, |
3085 | len, | |
3086 | nls_codepage); | |
3087 | bcc_ptr += 2 * (len + 1); | |
3088 | ses->serverNOS[2 * len] = 0; | |
3089 | ses->serverNOS[1+(2*len)] = 0; | |
3090 | remaining_words -= len + 1; | |
3091 | if (remaining_words > 0) { | |
3092 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
3093 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ | |
a424f8bf SF |
3094 | if(ses->serverDomain) |
3095 | kfree(ses->serverDomain); | |
1da177e4 | 3096 | ses->serverDomain = |
e915fc49 | 3097 | kzalloc(2 * |
1da177e4 LT |
3098 | (len + |
3099 | 1), | |
3100 | GFP_KERNEL); | |
3101 | cifs_strfromUCS_le | |
3102 | (ses-> | |
3103 | serverDomain, | |
e89dc920 | 3104 | (__le16 *) |
1da177e4 LT |
3105 | bcc_ptr, len, |
3106 | nls_codepage); | |
3107 | bcc_ptr += | |
3108 | 2 * (len + 1); | |
3109 | ses-> | |
3110 | serverDomain[2 | |
3111 | * len] | |
3112 | = 0; | |
3113 | ses-> | |
3114 | serverDomain[1 | |
3115 | + | |
3116 | (2 | |
3117 | * | |
3118 | len)] | |
3119 | = 0; | |
3120 | } /* else no more room so create dummy domain string */ | |
a424f8bf SF |
3121 | else { |
3122 | if(ses->serverDomain) | |
3123 | kfree(ses->serverDomain); | |
e915fc49 | 3124 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 3125 | } |
1da177e4 | 3126 | } else { /* no room so create dummy domain and NOS string */ |
a424f8bf SF |
3127 | if(ses->serverDomain) |
3128 | kfree(ses->serverDomain); | |
e915fc49 | 3129 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 3130 | kfree(ses->serverNOS); |
e915fc49 | 3131 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3132 | } |
3133 | } else { /* ASCII */ | |
3134 | len = strnlen(bcc_ptr, 1024); | |
3135 | if (((long) bcc_ptr + len) - | |
3136 | (long) pByteArea(smb_buffer_response) | |
3137 | <= BCC(smb_buffer_response)) { | |
a424f8bf SF |
3138 | if(ses->serverOS) |
3139 | kfree(ses->serverOS); | |
e915fc49 | 3140 | ses->serverOS = kzalloc(len + 1,GFP_KERNEL); |
1da177e4 LT |
3141 | strncpy(ses->serverOS,bcc_ptr, len); |
3142 | ||
3143 | bcc_ptr += len; | |
3144 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3145 | bcc_ptr++; | |
3146 | ||
3147 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3148 | kfree(ses->serverNOS); |
e915fc49 | 3149 | ses->serverNOS = kzalloc(len+1,GFP_KERNEL); |
1da177e4 LT |
3150 | strncpy(ses->serverNOS, bcc_ptr, len); |
3151 | bcc_ptr += len; | |
3152 | bcc_ptr[0] = 0; | |
3153 | bcc_ptr++; | |
3154 | ||
3155 | len = strnlen(bcc_ptr, 1024); | |
a424f8bf SF |
3156 | if(ses->serverDomain) |
3157 | kfree(ses->serverDomain); | |
e915fc49 | 3158 | ses->serverDomain = kzalloc(len+1,GFP_KERNEL); |
1da177e4 LT |
3159 | strncpy(ses->serverDomain, bcc_ptr, len); |
3160 | bcc_ptr += len; | |
3161 | bcc_ptr[0] = 0; | |
3162 | bcc_ptr++; | |
3163 | } else | |
3164 | cFYI(1, | |
3165 | ("Variable field of length %d extends beyond end of smb ", | |
3166 | len)); | |
3167 | } | |
3168 | } else { | |
3169 | cERROR(1, | |
3170 | (" Security Blob Length extends beyond end of SMB")); | |
3171 | } | |
3172 | } else { | |
3173 | cERROR(1, ("No session structure passed in.")); | |
3174 | } | |
3175 | } else { | |
3176 | cERROR(1, | |
3177 | (" Invalid Word count %d: ", | |
3178 | smb_buffer_response->WordCount)); | |
3179 | rc = -EIO; | |
3180 | } | |
3181 | ||
3182 | if (smb_buffer) | |
3183 | cifs_buf_release(smb_buffer); | |
3184 | ||
3185 | return rc; | |
3186 | } | |
3187 | ||
3188 | int | |
3189 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3190 | const char *tree, struct cifsTconInfo *tcon, | |
3191 | const struct nls_table *nls_codepage) | |
3192 | { | |
3193 | struct smb_hdr *smb_buffer; | |
3194 | struct smb_hdr *smb_buffer_response; | |
3195 | TCONX_REQ *pSMB; | |
3196 | TCONX_RSP *pSMBr; | |
3197 | unsigned char *bcc_ptr; | |
3198 | int rc = 0; | |
3199 | int length; | |
3200 | __u16 count; | |
3201 | ||
3202 | if (ses == NULL) | |
3203 | return -EIO; | |
3204 | ||
3205 | smb_buffer = cifs_buf_get(); | |
3206 | if (smb_buffer == NULL) { | |
3207 | return -ENOMEM; | |
3208 | } | |
3209 | smb_buffer_response = smb_buffer; | |
3210 | ||
3211 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3212 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3213 | |
3214 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3215 | smb_buffer->Uid = ses->Suid; |
3216 | pSMB = (TCONX_REQ *) smb_buffer; | |
3217 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3218 | ||
3219 | pSMB->AndXCommand = 0xFF; | |
3220 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3221 | bcc_ptr = &pSMB->Password[0]; |
eeac8047 SF |
3222 | if((ses->server->secMode) & SECMODE_USER) { |
3223 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ | |
7c7b25bc | 3224 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3225 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3226 | /* already aligned so no need to do it below */ |
eeac8047 | 3227 | } else { |
7c7b25bc | 3228 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3229 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3230 | specified as required (when that support is added to | |
3231 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3232 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3233 | by Samba (not sure whether other servers allow |
3234 | NTLMv2 password here) */ | |
7c7b25bc SF |
3235 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
3236 | if((extended_security & CIFSSEC_MAY_LANMAN) && | |
3237 | (ses->server->secType == LANMAN)) | |
3238 | calc_lanman_hash(ses, bcc_ptr); | |
3239 | else | |
3240 | #endif /* CIFS_WEAK_PW_HASH */ | |
eeac8047 SF |
3241 | SMBNTencrypt(ses->password, |
3242 | ses->server->cryptKey, | |
3243 | bcc_ptr); | |
3244 | ||
7c7b25bc SF |
3245 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
3246 | if(ses->capabilities & CAP_UNICODE) { | |
3247 | /* must align unicode strings */ | |
3248 | *bcc_ptr = 0; /* null byte password */ | |
3249 | bcc_ptr++; | |
3250 | } | |
eeac8047 | 3251 | } |
1da177e4 | 3252 | |
a878fb22 SF |
3253 | if(ses->server->secMode & |
3254 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
3255 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3256 | ||
3257 | if (ses->capabilities & CAP_STATUS32) { | |
3258 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3259 | } | |
3260 | if (ses->capabilities & CAP_DFS) { | |
3261 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3262 | } | |
3263 | if (ses->capabilities & CAP_UNICODE) { | |
3264 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3265 | length = | |
a878fb22 SF |
3266 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3267 | 6 /* max utf8 char length in bytes */ * | |
3268 | (/* server len*/ + 256 /* share len */), nls_codepage); | |
3269 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3270 | bcc_ptr += 2; /* skip trailing null */ |
3271 | } else { /* ASCII */ | |
1da177e4 LT |
3272 | strcpy(bcc_ptr, tree); |
3273 | bcc_ptr += strlen(tree) + 1; | |
3274 | } | |
3275 | strcpy(bcc_ptr, "?????"); | |
3276 | bcc_ptr += strlen("?????"); | |
3277 | bcc_ptr += 1; | |
3278 | count = bcc_ptr - &pSMB->Password[0]; | |
3279 | pSMB->hdr.smb_buf_length += count; | |
3280 | pSMB->ByteCount = cpu_to_le16(count); | |
3281 | ||
3282 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, 0); | |
3283 | ||
3284 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3285 | /* above now done in SendReceive */ | |
3286 | if ((rc == 0) && (tcon != NULL)) { | |
3287 | tcon->tidStatus = CifsGood; | |
3288 | tcon->tid = smb_buffer_response->Tid; | |
3289 | bcc_ptr = pByteArea(smb_buffer_response); | |
3290 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
3291 | /* skip service field (NB: this field is always ASCII) */ | |
3292 | bcc_ptr += length + 1; | |
3293 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); | |
3294 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3295 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3296 | if ((bcc_ptr + (2 * length)) - | |
3297 | pByteArea(smb_buffer_response) <= | |
3298 | BCC(smb_buffer_response)) { | |
f99d49ad | 3299 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3300 | tcon->nativeFileSystem = |
e915fc49 | 3301 | kzalloc(length + 2, GFP_KERNEL); |
1da177e4 | 3302 | cifs_strfromUCS_le(tcon->nativeFileSystem, |
e89dc920 | 3303 | (__le16 *) bcc_ptr, |
1da177e4 LT |
3304 | length, nls_codepage); |
3305 | bcc_ptr += 2 * length; | |
3306 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3307 | bcc_ptr[1] = 0; | |
3308 | bcc_ptr += 2; | |
3309 | } | |
3310 | /* else do not bother copying these informational fields */ | |
3311 | } else { | |
3312 | length = strnlen(bcc_ptr, 1024); | |
3313 | if ((bcc_ptr + length) - | |
3314 | pByteArea(smb_buffer_response) <= | |
3315 | BCC(smb_buffer_response)) { | |
f99d49ad | 3316 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3317 | tcon->nativeFileSystem = |
e915fc49 | 3318 | kzalloc(length + 1, GFP_KERNEL); |
1da177e4 LT |
3319 | strncpy(tcon->nativeFileSystem, bcc_ptr, |
3320 | length); | |
3321 | } | |
3322 | /* else do not bother copying these informational fields */ | |
3323 | } | |
1a4e15a0 SF |
3324 | if((smb_buffer_response->WordCount == 3) || |
3325 | (smb_buffer_response->WordCount == 7)) | |
3326 | /* field is in same location */ | |
3979877e SF |
3327 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
3328 | else | |
3329 | tcon->Flags = 0; | |
1da177e4 LT |
3330 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3331 | } else if ((rc == 0) && tcon == NULL) { | |
3332 | /* all we need to save for IPC$ connection */ | |
3333 | ses->ipc_tid = smb_buffer_response->Tid; | |
3334 | } | |
3335 | ||
3336 | if (smb_buffer) | |
3337 | cifs_buf_release(smb_buffer); | |
3338 | return rc; | |
3339 | } | |
3340 | ||
3341 | int | |
3342 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3343 | { | |
3344 | int rc = 0; | |
3345 | int xid; | |
3346 | struct cifsSesInfo *ses = NULL; | |
3347 | struct task_struct *cifsd_task; | |
2fe87f02 | 3348 | char * tmp; |
1da177e4 LT |
3349 | |
3350 | xid = GetXid(); | |
3351 | ||
3352 | if (cifs_sb->tcon) { | |
3353 | ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ | |
3354 | rc = CIFSSMBTDis(xid, cifs_sb->tcon); | |
3355 | if (rc == -EBUSY) { | |
3356 | FreeXid(xid); | |
3357 | return 0; | |
3358 | } | |
3359 | tconInfoFree(cifs_sb->tcon); | |
3360 | if ((ses) && (ses->server)) { | |
3361 | /* save off task so we do not refer to ses later */ | |
3362 | cifsd_task = ses->server->tsk; | |
3363 | cFYI(1, ("About to do SMBLogoff ")); | |
3364 | rc = CIFSSMBLogoff(xid, ses); | |
3365 | if (rc == -EBUSY) { | |
3366 | FreeXid(xid); | |
3367 | return 0; | |
3368 | } else if (rc == -ESHUTDOWN) { | |
467a8f8d | 3369 | cFYI(1, ("Waking up socket by sending signal")); |
f7f7c31c | 3370 | if (cifsd_task) { |
5d9c7206 | 3371 | force_sig(SIGKILL,cifsd_task); |
aaf737ad | 3372 | kthread_stop(cifsd_task); |
f191401f | 3373 | } |
1da177e4 LT |
3374 | rc = 0; |
3375 | } /* else - we have an smb session | |
3376 | left on this socket do not kill cifsd */ | |
3377 | } else | |
3378 | cFYI(1, ("No session or bad tcon")); | |
3379 | } | |
3380 | ||
3381 | cifs_sb->tcon = NULL; | |
2fe87f02 SF |
3382 | tmp = cifs_sb->prepath; |
3383 | cifs_sb->prepathlen = 0; | |
3384 | cifs_sb->prepath = NULL; | |
3385 | kfree(tmp); | |
041e0e3b NA |
3386 | if (ses) |
3387 | schedule_timeout_interruptible(msecs_to_jiffies(500)); | |
1da177e4 LT |
3388 | if (ses) |
3389 | sesInfoFree(ses); | |
3390 | ||
3391 | FreeXid(xid); | |
3392 | return rc; /* BB check if we should always return zero here */ | |
3393 | } | |
3394 | ||
3395 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
3396 | struct nls_table * nls_info) | |
3397 | { | |
3398 | int rc = 0; | |
7c7b25bc | 3399 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
1da177e4 | 3400 | int ntlmv2_flag = FALSE; |
ad009ac9 | 3401 | int first_time = 0; |
1da177e4 LT |
3402 | |
3403 | /* what if server changes its buffer size after dropping the session? */ | |
3404 | if(pSesInfo->server->maxBuf == 0) /* no need to send on reconnect */ { | |
3405 | rc = CIFSSMBNegotiate(xid, pSesInfo); | |
3406 | if(rc == -EAGAIN) /* retry only once on 1st time connection */ { | |
3407 | rc = CIFSSMBNegotiate(xid, pSesInfo); | |
3408 | if(rc == -EAGAIN) | |
3409 | rc = -EHOSTDOWN; | |
3410 | } | |
3411 | if(rc == 0) { | |
3412 | spin_lock(&GlobalMid_Lock); | |
3413 | if(pSesInfo->server->tcpStatus != CifsExiting) | |
3414 | pSesInfo->server->tcpStatus = CifsGood; | |
3415 | else | |
3416 | rc = -EHOSTDOWN; | |
3417 | spin_unlock(&GlobalMid_Lock); | |
3418 | ||
3419 | } | |
ad009ac9 | 3420 | first_time = 1; |
1da177e4 LT |
3421 | } |
3422 | if (!rc) { | |
9ac00b7d | 3423 | pSesInfo->flags = 0; |
1da177e4 LT |
3424 | pSesInfo->capabilities = pSesInfo->server->capabilities; |
3425 | if(linuxExtEnabled == 0) | |
3426 | pSesInfo->capabilities &= (~CAP_UNIX); | |
ad009ac9 | 3427 | /* pSesInfo->sequence_number = 0;*/ |
175ec9e1 | 3428 | cFYI(1,("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", |
1da177e4 LT |
3429 | pSesInfo->server->secMode, |
3430 | pSesInfo->server->capabilities, | |
175ec9e1 | 3431 | pSesInfo->server->timeAdj)); |
189acaae | 3432 | if(experimEnabled < 2) |
3979877e SF |
3433 | rc = CIFS_SessSetup(xid, pSesInfo, |
3434 | first_time, nls_info); | |
189acaae | 3435 | else if (extended_security |
175ec9e1 SF |
3436 | && (pSesInfo->capabilities |
3437 | & CAP_EXTENDED_SECURITY) | |
1da177e4 | 3438 | && (pSesInfo->server->secType == NTLMSSP)) { |
189acaae | 3439 | rc = -EOPNOTSUPP; |
1da177e4 LT |
3440 | } else if (extended_security |
3441 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
3442 | && (pSesInfo->server->secType == RawNTLMSSP)) { | |
5815449d | 3443 | cFYI(1, ("NTLMSSP sesssetup")); |
1da177e4 LT |
3444 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, |
3445 | pSesInfo, | |
3446 | &ntlmv2_flag, | |
3447 | nls_info); | |
3448 | if (!rc) { | |
3449 | if(ntlmv2_flag) { | |
3450 | char * v2_response; | |
467a8f8d | 3451 | cFYI(1, ("more secure NTLM ver2 hash")); |
1da177e4 LT |
3452 | if(CalcNTLMv2_partial_mac_key(pSesInfo, |
3453 | nls_info)) { | |
3454 | rc = -ENOMEM; | |
3455 | goto ss_err_exit; | |
3456 | } else | |
3457 | v2_response = kmalloc(16 + 64 /* blob */, GFP_KERNEL); | |
3458 | if(v2_response) { | |
3459 | CalcNTLMv2_response(pSesInfo,v2_response); | |
ad009ac9 SF |
3460 | /* if(first_time) |
3461 | cifs_calculate_ntlmv2_mac_key( | |
3462 | pSesInfo->server->mac_signing_key, | |
3463 | response, ntlm_session_key, */ | |
1da177e4 LT |
3464 | kfree(v2_response); |
3465 | /* BB Put dummy sig in SessSetup PDU? */ | |
3466 | } else { | |
3467 | rc = -ENOMEM; | |
3468 | goto ss_err_exit; | |
3469 | } | |
3470 | ||
3471 | } else { | |
3472 | SMBNTencrypt(pSesInfo->password, | |
3473 | pSesInfo->server->cryptKey, | |
3474 | ntlm_session_key); | |
3475 | ||
ad009ac9 SF |
3476 | if(first_time) |
3477 | cifs_calculate_mac_key( | |
b609f06a | 3478 | &pSesInfo->server->mac_signing_key, |
ad009ac9 SF |
3479 | ntlm_session_key, |
3480 | pSesInfo->password); | |
1da177e4 LT |
3481 | } |
3482 | /* for better security the weaker lanman hash not sent | |
3483 | in AuthSessSetup so we no longer calculate it */ | |
3484 | ||
3485 | rc = CIFSNTLMSSPAuthSessSetup(xid, | |
3486 | pSesInfo, | |
3487 | ntlm_session_key, | |
3488 | ntlmv2_flag, | |
3489 | nls_info); | |
3490 | } | |
3491 | } else { /* old style NTLM 0.12 session setup */ | |
3492 | SMBNTencrypt(pSesInfo->password, | |
3493 | pSesInfo->server->cryptKey, | |
3494 | ntlm_session_key); | |
3495 | ||
ad009ac9 SF |
3496 | if(first_time) |
3497 | cifs_calculate_mac_key( | |
b609f06a | 3498 | &pSesInfo->server->mac_signing_key, |
ad009ac9 SF |
3499 | ntlm_session_key, pSesInfo->password); |
3500 | ||
1da177e4 LT |
3501 | rc = CIFSSessSetup(xid, pSesInfo, |
3502 | ntlm_session_key, nls_info); | |
3503 | } | |
3504 | if (rc) { | |
3505 | cERROR(1,("Send error in SessSetup = %d",rc)); | |
3506 | } else { | |
467a8f8d | 3507 | cFYI(1, ("CIFS Session Established successfully")); |
1da177e4 LT |
3508 | pSesInfo->status = CifsGood; |
3509 | } | |
3510 | } | |
3511 | ss_err_exit: | |
3512 | return rc; | |
3513 | } | |
3514 |