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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 | |
fb8c4b14 | 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
1da177e4 LT |
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. */ |
c18c842b | 88 | unsigned no_linux_ext:1; |
d7245c2c | 89 | unsigned sfu_emul:1; |
bf820679 | 90 | unsigned nullauth:1; /* attempt to authenticate with null user */ |
c46fa8ac SF |
91 | unsigned nocase; /* request case insensitive filenames */ |
92 | unsigned nobrl; /* disable sending byte range locks to srv */ | |
1da177e4 LT |
93 | unsigned int rsize; |
94 | unsigned int wsize; | |
95 | unsigned int sockopt; | |
96 | unsigned short int port; | |
fb8c4b14 | 97 | char *prepath; |
1da177e4 LT |
98 | }; |
99 | ||
fb8c4b14 | 100 | static int ipv4_connect(struct sockaddr_in *psin_server, |
1da177e4 | 101 | struct socket **csocket, |
fb8c4b14 SF |
102 | char *netb_name, |
103 | char *server_netb_name); | |
104 | static int ipv6_connect(struct sockaddr_in6 *psin_server, | |
1da177e4 LT |
105 | struct socket **csocket); |
106 | ||
107 | ||
fb8c4b14 | 108 | /* |
1da177e4 | 109 | * cifs tcp session reconnection |
fb8c4b14 | 110 | * |
1da177e4 LT |
111 | * mark tcp session as reconnecting so temporarily locked |
112 | * mark all smb sessions as reconnecting for tcp session | |
113 | * reconnect tcp session | |
114 | * wake up waiters on reconnection? - (not needed currently) | |
115 | */ | |
116 | ||
2cd646a2 | 117 | static int |
1da177e4 LT |
118 | cifs_reconnect(struct TCP_Server_Info *server) |
119 | { | |
120 | int rc = 0; | |
121 | struct list_head *tmp; | |
122 | struct cifsSesInfo *ses; | |
123 | struct cifsTconInfo *tcon; | |
fb8c4b14 | 124 | struct mid_q_entry *mid_entry; |
50c2f753 | 125 | |
1da177e4 | 126 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 SF |
127 | if ( kthread_should_stop() ) { |
128 | /* the demux thread will exit normally | |
1da177e4 LT |
129 | next time through the loop */ |
130 | spin_unlock(&GlobalMid_Lock); | |
131 | return rc; | |
132 | } else | |
133 | server->tcpStatus = CifsNeedReconnect; | |
134 | spin_unlock(&GlobalMid_Lock); | |
135 | server->maxBuf = 0; | |
136 | ||
e4eb295d | 137 | cFYI(1, ("Reconnecting tcp session")); |
1da177e4 LT |
138 | |
139 | /* before reconnecting the tcp session, mark the smb session (uid) | |
140 | and the tid bad so they are not used until reconnected */ | |
141 | read_lock(&GlobalSMBSeslock); | |
142 | list_for_each(tmp, &GlobalSMBSessionList) { | |
143 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
144 | if (ses->server) { | |
145 | if (ses->server == server) { | |
146 | ses->status = CifsNeedReconnect; | |
147 | ses->ipc_tid = 0; | |
148 | } | |
149 | } | |
150 | /* else tcp and smb sessions need reconnection */ | |
151 | } | |
152 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
153 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); | |
fb8c4b14 | 154 | if ((tcon) && (tcon->ses) && (tcon->ses->server == server)) { |
1da177e4 LT |
155 | tcon->tidStatus = CifsNeedReconnect; |
156 | } | |
157 | } | |
158 | read_unlock(&GlobalSMBSeslock); | |
159 | /* do not want to be sending data on a socket we are freeing */ | |
fb8c4b14 SF |
160 | down(&server->tcpSem); |
161 | if (server->ssocket) { | |
467a8f8d | 162 | cFYI(1, ("State: 0x%x Flags: 0x%lx", server->ssocket->state, |
1da177e4 | 163 | server->ssocket->flags)); |
fb8c4b14 SF |
164 | server->ssocket->ops->shutdown(server->ssocket, SEND_SHUTDOWN); |
165 | cFYI(1, ("Post shutdown state: 0x%x Flags: 0x%lx", | |
467a8f8d | 166 | server->ssocket->state, |
1da177e4 LT |
167 | server->ssocket->flags)); |
168 | sock_release(server->ssocket); | |
169 | server->ssocket = NULL; | |
170 | } | |
171 | ||
172 | spin_lock(&GlobalMid_Lock); | |
173 | list_for_each(tmp, &server->pending_mid_q) { | |
174 | mid_entry = list_entry(tmp, struct | |
175 | mid_q_entry, | |
176 | qhead); | |
fb8c4b14 SF |
177 | if (mid_entry) { |
178 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
09d1db5c SF |
179 | /* Mark other intransit requests as needing |
180 | retry so we do not immediately mark the | |
181 | session bad again (ie after we reconnect | |
182 | below) as they timeout too */ | |
1da177e4 LT |
183 | mid_entry->midState = MID_RETRY_NEEDED; |
184 | } | |
185 | } | |
186 | } | |
187 | spin_unlock(&GlobalMid_Lock); | |
fb8c4b14 | 188 | up(&server->tcpSem); |
1da177e4 | 189 | |
fb8c4b14 | 190 | while ( (!kthread_should_stop()) && (server->tcpStatus != CifsGood)) { |
6c3d8909 | 191 | try_to_freeze(); |
fb8c4b14 SF |
192 | if (server->protocolType == IPV6) { |
193 | rc = ipv6_connect(&server->addr.sockAddr6, | |
194 | &server->ssocket); | |
1da177e4 | 195 | } else { |
fb8c4b14 | 196 | rc = ipv4_connect(&server->addr.sockAddr, |
1da177e4 | 197 | &server->ssocket, |
a10faeb2 SF |
198 | server->workstation_RFC1001_name, |
199 | server->server_RFC1001_name); | |
1da177e4 | 200 | } |
fb8c4b14 SF |
201 | if (rc) { |
202 | cFYI(1, ("reconnect error %d", rc)); | |
0cb766ae | 203 | msleep(3000); |
1da177e4 LT |
204 | } else { |
205 | atomic_inc(&tcpSesReconnectCount); | |
206 | spin_lock(&GlobalMid_Lock); | |
fb8c4b14 | 207 | if ( !kthread_should_stop() ) |
1da177e4 | 208 | server->tcpStatus = CifsGood; |
ad009ac9 | 209 | server->sequence_number = 0; |
fb8c4b14 | 210 | spin_unlock(&GlobalMid_Lock); |
1da177e4 LT |
211 | /* atomic_set(&server->inFlight,0);*/ |
212 | wake_up(&server->response_q); | |
213 | } | |
214 | } | |
215 | return rc; | |
216 | } | |
217 | ||
fb8c4b14 | 218 | /* |
e4eb295d SF |
219 | return codes: |
220 | 0 not a transact2, or all data present | |
221 | >0 transact2 with that much data missing | |
222 | -EINVAL = invalid transact2 | |
223 | ||
224 | */ | |
fb8c4b14 | 225 | static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) |
e4eb295d | 226 | { |
fb8c4b14 SF |
227 | struct smb_t2_rsp *pSMBt; |
228 | int total_data_size; | |
e4eb295d SF |
229 | int data_in_this_rsp; |
230 | int remaining; | |
231 | ||
fb8c4b14 | 232 | if (pSMB->Command != SMB_COM_TRANSACTION2) |
e4eb295d SF |
233 | return 0; |
234 | ||
fb8c4b14 SF |
235 | /* check for plausible wct, bcc and t2 data and parm sizes */ |
236 | /* check for parm and data offset going beyond end of smb */ | |
237 | if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
467a8f8d | 238 | cFYI(1, ("invalid transact2 word count")); |
e4eb295d SF |
239 | return -EINVAL; |
240 | } | |
241 | ||
242 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
243 | ||
244 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
245 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
246 | ||
247 | remaining = total_data_size - data_in_this_rsp; | |
248 | ||
fb8c4b14 | 249 | if (remaining == 0) |
e4eb295d | 250 | return 0; |
fb8c4b14 | 251 | else if (remaining < 0) { |
467a8f8d | 252 | cFYI(1, ("total data %d smaller than data in frame %d", |
e4eb295d SF |
253 | total_data_size, data_in_this_rsp)); |
254 | return -EINVAL; | |
255 | } else { | |
467a8f8d | 256 | cFYI(1, ("missing %d bytes from transact2, check next response", |
e4eb295d | 257 | remaining)); |
fb8c4b14 SF |
258 | if (total_data_size > maxBufSize) { |
259 | cERROR(1, ("TotalDataSize %d is over maximum buffer %d", | |
260 | total_data_size, maxBufSize)); | |
261 | return -EINVAL; | |
e4eb295d SF |
262 | } |
263 | return remaining; | |
264 | } | |
265 | } | |
266 | ||
fb8c4b14 | 267 | static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) |
e4eb295d SF |
268 | { |
269 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
270 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
271 | int total_data_size; | |
272 | int total_in_buf; | |
273 | int remaining; | |
274 | int total_in_buf2; | |
fb8c4b14 SF |
275 | char *data_area_of_target; |
276 | char *data_area_of_buf2; | |
e4eb295d SF |
277 | __u16 byte_count; |
278 | ||
279 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
280 | ||
fb8c4b14 | 281 | if (total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { |
63135e08 | 282 | cFYI(1, ("total data size of primary and secondary t2 differ")); |
e4eb295d SF |
283 | } |
284 | ||
285 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
286 | ||
287 | remaining = total_data_size - total_in_buf; | |
50c2f753 | 288 | |
fb8c4b14 | 289 | if (remaining < 0) |
e4eb295d SF |
290 | return -EINVAL; |
291 | ||
fb8c4b14 | 292 | if (remaining == 0) /* nothing to do, ignore */ |
e4eb295d | 293 | return 0; |
50c2f753 | 294 | |
e4eb295d | 295 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); |
fb8c4b14 | 296 | if (remaining < total_in_buf2) { |
467a8f8d | 297 | cFYI(1, ("transact2 2nd response contains too much data")); |
e4eb295d SF |
298 | } |
299 | ||
300 | /* find end of first SMB data area */ | |
fb8c4b14 | 301 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + |
e4eb295d SF |
302 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); |
303 | /* validate target area */ | |
304 | ||
305 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
fb8c4b14 | 306 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); |
e4eb295d SF |
307 | |
308 | data_area_of_target += total_in_buf; | |
309 | ||
310 | /* copy second buffer into end of first buffer */ | |
fb8c4b14 | 311 | memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); |
e4eb295d SF |
312 | total_in_buf += total_in_buf2; |
313 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
314 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
315 | byte_count += total_in_buf2; | |
316 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
317 | ||
70ca734a | 318 | byte_count = pTargetSMB->smb_buf_length; |
e4eb295d SF |
319 | byte_count += total_in_buf2; |
320 | ||
321 | /* BB also add check that we are not beyond maximum buffer size */ | |
50c2f753 | 322 | |
70ca734a | 323 | pTargetSMB->smb_buf_length = byte_count; |
e4eb295d | 324 | |
fb8c4b14 | 325 | if (remaining == total_in_buf2) { |
467a8f8d | 326 | cFYI(1, ("found the last secondary response")); |
e4eb295d SF |
327 | return 0; /* we are done */ |
328 | } else /* more responses to go */ | |
329 | return 1; | |
330 | ||
331 | } | |
332 | ||
1da177e4 LT |
333 | static int |
334 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
335 | { | |
336 | int length; | |
337 | unsigned int pdu_length, total_read; | |
338 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
339 | struct smb_hdr *bigbuf = NULL; |
340 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
341 | struct msghdr smb_msg; |
342 | struct kvec iov; | |
343 | struct socket *csocket = server->ssocket; | |
344 | struct list_head *tmp; | |
345 | struct cifsSesInfo *ses; | |
346 | struct task_struct *task_to_wake = NULL; | |
347 | struct mid_q_entry *mid_entry; | |
70ca734a | 348 | char temp; |
b8643e1b | 349 | int isLargeBuf = FALSE; |
e4eb295d SF |
350 | int isMultiRsp; |
351 | int reconnect; | |
1da177e4 | 352 | |
1da177e4 LT |
353 | current->flags |= PF_MEMALLOC; |
354 | server->tsk = current; /* save process info to wake at shutdown */ | |
ba25f9dc | 355 | cFYI(1, ("Demultiplex PID: %d", task_pid_nr(current))); |
fb8c4b14 | 356 | write_lock(&GlobalSMBSeslock); |
1da177e4 LT |
357 | atomic_inc(&tcpSesAllocCount); |
358 | length = tcpSesAllocCount.counter; | |
359 | write_unlock(&GlobalSMBSeslock); | |
f191401f | 360 | complete(&cifsd_complete); |
fb8c4b14 | 361 | if (length > 1) { |
1da177e4 LT |
362 | mempool_resize(cifs_req_poolp, |
363 | length + cifs_min_rcv, | |
364 | GFP_KERNEL); | |
365 | } | |
366 | ||
83144186 | 367 | set_freezable(); |
aaf737ad | 368 | while (!kthread_should_stop()) { |
ede1327e SF |
369 | if (try_to_freeze()) |
370 | continue; | |
b8643e1b SF |
371 | if (bigbuf == NULL) { |
372 | bigbuf = cifs_buf_get(); | |
0fd1ffe0 PM |
373 | if (!bigbuf) { |
374 | cERROR(1, ("No memory for large SMB response")); | |
b8643e1b SF |
375 | msleep(3000); |
376 | /* retry will check if exiting */ | |
377 | continue; | |
378 | } | |
0fd1ffe0 PM |
379 | } else if (isLargeBuf) { |
380 | /* we are reusing a dirty large buf, clear its start */ | |
b8643e1b | 381 | memset(bigbuf, 0, sizeof (struct smb_hdr)); |
1da177e4 | 382 | } |
b8643e1b SF |
383 | |
384 | if (smallbuf == NULL) { | |
385 | smallbuf = cifs_small_buf_get(); | |
0fd1ffe0 PM |
386 | if (!smallbuf) { |
387 | cERROR(1, ("No memory for SMB response")); | |
b8643e1b SF |
388 | msleep(1000); |
389 | /* retry will check if exiting */ | |
390 | continue; | |
391 | } | |
392 | /* beginning of smb buffer is cleared in our buf_get */ | |
393 | } else /* if existing small buf clear beginning */ | |
394 | memset(smallbuf, 0, sizeof (struct smb_hdr)); | |
395 | ||
396 | isLargeBuf = FALSE; | |
e4eb295d | 397 | isMultiRsp = FALSE; |
b8643e1b | 398 | smb_buffer = smallbuf; |
1da177e4 LT |
399 | iov.iov_base = smb_buffer; |
400 | iov.iov_len = 4; | |
401 | smb_msg.msg_control = NULL; | |
402 | smb_msg.msg_controllen = 0; | |
403 | length = | |
404 | kernel_recvmsg(csocket, &smb_msg, | |
405 | &iov, 1, 4, 0 /* BB see socket.h flags */); | |
406 | ||
aaf737ad | 407 | if ( kthread_should_stop() ) { |
1da177e4 LT |
408 | break; |
409 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
0fd1ffe0 | 410 | cFYI(1, ("Reconnect after server stopped responding")); |
1da177e4 | 411 | cifs_reconnect(server); |
0fd1ffe0 | 412 | cFYI(1, ("call to reconnect done")); |
1da177e4 LT |
413 | csocket = server->ssocket; |
414 | continue; | |
415 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 416 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
417 | allowing socket to clear and app threads to set |
418 | tcpStatus CifsNeedReconnect if server hung */ | |
419 | continue; | |
420 | } else if (length <= 0) { | |
0fd1ffe0 PM |
421 | if (server->tcpStatus == CifsNew) { |
422 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
423 | /* some servers kill the TCP session rather than |
424 | returning an SMB negprot error, in which | |
425 | case reconnecting here is not going to help, | |
426 | and so simply return error to mount */ | |
1da177e4 LT |
427 | break; |
428 | } | |
0fd1ffe0 | 429 | if (!try_to_freeze() && (length == -EINTR)) { |
467a8f8d | 430 | cFYI(1, ("cifsd thread killed")); |
1da177e4 LT |
431 | break; |
432 | } | |
467a8f8d | 433 | cFYI(1, ("Reconnect after unexpected peek error %d", |
57337e42 | 434 | length)); |
1da177e4 LT |
435 | cifs_reconnect(server); |
436 | csocket = server->ssocket; | |
437 | wake_up(&server->response_q); | |
438 | continue; | |
46810cbf SF |
439 | } else if (length < 4) { |
440 | cFYI(1, | |
57337e42 | 441 | ("Frame under four bytes received (%d bytes long)", |
46810cbf SF |
442 | length)); |
443 | cifs_reconnect(server); | |
444 | csocket = server->ssocket; | |
445 | wake_up(&server->response_q); | |
446 | continue; | |
447 | } | |
1da177e4 | 448 | |
70ca734a SF |
449 | /* The right amount was read from socket - 4 bytes */ |
450 | /* so we can now interpret the length field */ | |
46810cbf | 451 | |
70ca734a SF |
452 | /* the first byte big endian of the length field, |
453 | is actually not part of the length but the type | |
454 | with the most common, zero, as regular data */ | |
455 | temp = *((char *) smb_buffer); | |
46810cbf | 456 | |
fb8c4b14 | 457 | /* Note that FC 1001 length is big endian on the wire, |
70ca734a SF |
458 | but we convert it here so it is always manipulated |
459 | as host byte order */ | |
46810cbf | 460 | pdu_length = ntohl(smb_buffer->smb_buf_length); |
70ca734a SF |
461 | smb_buffer->smb_buf_length = pdu_length; |
462 | ||
467a8f8d | 463 | cFYI(1, ("rfc1002 length 0x%x", pdu_length+4)); |
46810cbf | 464 | |
70ca734a | 465 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
fb8c4b14 | 466 | continue; |
70ca734a | 467 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
467a8f8d | 468 | cFYI(1, ("Good RFC 1002 session rsp")); |
e4eb295d | 469 | continue; |
70ca734a | 470 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
fb8c4b14 | 471 | /* we get this from Windows 98 instead of |
46810cbf | 472 | an error on SMB negprot response */ |
fb8c4b14 | 473 | cFYI(1, ("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 474 | pdu_length)); |
fb8c4b14 SF |
475 | if (server->tcpStatus == CifsNew) { |
476 | /* if nack on negprot (rather than | |
46810cbf SF |
477 | ret of smb negprot error) reconnecting |
478 | not going to help, ret error to mount */ | |
479 | break; | |
480 | } else { | |
481 | /* give server a second to | |
482 | clean up before reconnect attempt */ | |
483 | msleep(1000); | |
484 | /* always try 445 first on reconnect | |
485 | since we get NACK on some if we ever | |
fb8c4b14 | 486 | connected to port 139 (the NACK is |
46810cbf SF |
487 | since we do not begin with RFC1001 |
488 | session initialize frame) */ | |
fb8c4b14 | 489 | server->addr.sockAddr.sin_port = |
46810cbf | 490 | htons(CIFS_PORT); |
1da177e4 LT |
491 | cifs_reconnect(server); |
492 | csocket = server->ssocket; | |
46810cbf | 493 | wake_up(&server->response_q); |
1da177e4 | 494 | continue; |
46810cbf | 495 | } |
70ca734a | 496 | } else if (temp != (char) 0) { |
fb8c4b14 | 497 | cERROR(1, ("Unknown RFC 1002 frame")); |
70ca734a SF |
498 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
499 | length); | |
46810cbf SF |
500 | cifs_reconnect(server); |
501 | csocket = server->ssocket; | |
502 | continue; | |
e4eb295d SF |
503 | } |
504 | ||
505 | /* else we have an SMB response */ | |
fb8c4b14 | 506 | if ((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || |
46810cbf | 507 | (pdu_length < sizeof (struct smb_hdr) - 1 - 4)) { |
e4eb295d | 508 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 509 | length, pdu_length+4)); |
e4eb295d SF |
510 | cifs_reconnect(server); |
511 | csocket = server->ssocket; | |
512 | wake_up(&server->response_q); | |
513 | continue; | |
fb8c4b14 | 514 | } |
e4eb295d SF |
515 | |
516 | /* else length ok */ | |
517 | reconnect = 0; | |
518 | ||
fb8c4b14 | 519 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
e4eb295d SF |
520 | isLargeBuf = TRUE; |
521 | memcpy(bigbuf, smallbuf, 4); | |
522 | smb_buffer = bigbuf; | |
523 | } | |
524 | length = 0; | |
525 | iov.iov_base = 4 + (char *)smb_buffer; | |
526 | iov.iov_len = pdu_length; | |
fb8c4b14 | 527 | for (total_read = 0; total_read < pdu_length; |
e4eb295d SF |
528 | total_read += length) { |
529 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
530 | pdu_length - total_read, 0); | |
fb8c4b14 | 531 | if ( kthread_should_stop() || |
e4eb295d SF |
532 | (length == -EINTR)) { |
533 | /* then will exit */ | |
534 | reconnect = 2; | |
535 | break; | |
536 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
537 | cifs_reconnect(server); |
538 | csocket = server->ssocket; | |
fb8c4b14 | 539 | /* Reconnect wakes up rspns q */ |
e4eb295d SF |
540 | /* Now we will reread sock */ |
541 | reconnect = 1; | |
542 | break; | |
fb8c4b14 | 543 | } else if ((length == -ERESTARTSYS) || |
e4eb295d SF |
544 | (length == -EAGAIN)) { |
545 | msleep(1); /* minimum sleep to prevent looping, | |
fb8c4b14 | 546 | allowing socket to clear and app |
e4eb295d SF |
547 | threads to set tcpStatus |
548 | CifsNeedReconnect if server hung*/ | |
46810cbf | 549 | continue; |
e4eb295d | 550 | } else if (length <= 0) { |
fb8c4b14 | 551 | cERROR(1, ("Received no data, expecting %d", |
e4eb295d SF |
552 | pdu_length - total_read)); |
553 | cifs_reconnect(server); | |
554 | csocket = server->ssocket; | |
555 | reconnect = 1; | |
556 | break; | |
46810cbf | 557 | } |
e4eb295d | 558 | } |
fb8c4b14 | 559 | if (reconnect == 2) |
e4eb295d | 560 | break; |
fb8c4b14 | 561 | else if (reconnect == 1) |
e4eb295d | 562 | continue; |
1da177e4 | 563 | |
e4eb295d | 564 | length += 4; /* account for rfc1002 hdr */ |
50c2f753 | 565 | |
09d1db5c | 566 | |
e4eb295d | 567 | dump_smb(smb_buffer, length); |
184ed211 | 568 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 569 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
570 | continue; |
571 | } | |
1da177e4 | 572 | |
e4eb295d SF |
573 | |
574 | task_to_wake = NULL; | |
575 | spin_lock(&GlobalMid_Lock); | |
576 | list_for_each(tmp, &server->pending_mid_q) { | |
577 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
578 | ||
50c2f753 | 579 | if ((mid_entry->mid == smb_buffer->Mid) && |
e4eb295d SF |
580 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && |
581 | (mid_entry->command == smb_buffer->Command)) { | |
fb8c4b14 | 582 | if (check2ndT2(smb_buffer,server->maxBuf) > 0) { |
e4eb295d | 583 | /* We have a multipart transact2 resp */ |
cd63499c | 584 | isMultiRsp = TRUE; |
fb8c4b14 | 585 | if (mid_entry->resp_buf) { |
e4eb295d | 586 | /* merge response - fix up 1st*/ |
50c2f753 | 587 | if (coalesce_t2(smb_buffer, |
e4eb295d | 588 | mid_entry->resp_buf)) { |
3979877e | 589 | mid_entry->multiRsp = 1; |
e4eb295d SF |
590 | break; |
591 | } else { | |
592 | /* all parts received */ | |
3979877e | 593 | mid_entry->multiEnd = 1; |
50c2f753 | 594 | goto multi_t2_fnd; |
e4eb295d SF |
595 | } |
596 | } else { | |
fb8c4b14 | 597 | if (!isLargeBuf) { |
e4eb295d SF |
598 | cERROR(1,("1st trans2 resp needs bigbuf")); |
599 | /* BB maybe we can fix this up, switch | |
50c2f753 | 600 | to already allocated large buffer? */ |
e4eb295d | 601 | } else { |
cd63499c | 602 | /* Have first buffer */ |
e4eb295d SF |
603 | mid_entry->resp_buf = |
604 | smb_buffer; | |
605 | mid_entry->largeBuf = 1; | |
e4eb295d SF |
606 | bigbuf = NULL; |
607 | } | |
608 | } | |
609 | break; | |
50c2f753 | 610 | } |
e4eb295d | 611 | mid_entry->resp_buf = smb_buffer; |
fb8c4b14 | 612 | if (isLargeBuf) |
e4eb295d | 613 | mid_entry->largeBuf = 1; |
46810cbf | 614 | else |
e4eb295d SF |
615 | mid_entry->largeBuf = 0; |
616 | multi_t2_fnd: | |
617 | task_to_wake = mid_entry->tsk; | |
618 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
619 | #ifdef CONFIG_CIFS_STATS2 |
620 | mid_entry->when_received = jiffies; | |
621 | #endif | |
3a5ff61c SF |
622 | /* so we do not time out requests to server |
623 | which is still responding (since server could | |
624 | be busy but not dead) */ | |
625 | server->lstrp = jiffies; | |
e4eb295d | 626 | break; |
46810cbf | 627 | } |
1da177e4 | 628 | } |
e4eb295d SF |
629 | spin_unlock(&GlobalMid_Lock); |
630 | if (task_to_wake) { | |
cd63499c | 631 | /* Was previous buf put in mpx struct for multi-rsp? */ |
fb8c4b14 | 632 | if (!isMultiRsp) { |
cd63499c | 633 | /* smb buffer will be freed by user thread */ |
fb8c4b14 | 634 | if (isLargeBuf) { |
cd63499c SF |
635 | bigbuf = NULL; |
636 | } else | |
637 | smallbuf = NULL; | |
638 | } | |
e4eb295d | 639 | wake_up_process(task_to_wake); |
d7c8c94d | 640 | } else if ((is_valid_oplock_break(smb_buffer, server) == FALSE) |
50c2f753 SF |
641 | && (isMultiRsp == FALSE)) { |
642 | cERROR(1, ("No task to wake, unknown frame received! " | |
643 | "NumMids %d", midCount.counter)); | |
644 | cifs_dump_mem("Received Data is: ", (char *)smb_buffer, | |
70ca734a | 645 | sizeof(struct smb_hdr)); |
3979877e SF |
646 | #ifdef CONFIG_CIFS_DEBUG2 |
647 | cifs_dump_detail(smb_buffer); | |
648 | cifs_dump_mids(server); | |
649 | #endif /* CIFS_DEBUG2 */ | |
50c2f753 | 650 | |
e4eb295d SF |
651 | } |
652 | } /* end while !EXITING */ | |
653 | ||
1da177e4 LT |
654 | spin_lock(&GlobalMid_Lock); |
655 | server->tcpStatus = CifsExiting; | |
656 | server->tsk = NULL; | |
31ca3bc3 SF |
657 | /* check if we have blocked requests that need to free */ |
658 | /* Note that cifs_max_pending is normally 50, but | |
659 | can be set at module install time to as little as two */ | |
fb8c4b14 | 660 | if (atomic_read(&server->inFlight) >= cifs_max_pending) |
31ca3bc3 SF |
661 | atomic_set(&server->inFlight, cifs_max_pending - 1); |
662 | /* We do not want to set the max_pending too low or we | |
663 | could end up with the counter going negative */ | |
1da177e4 | 664 | spin_unlock(&GlobalMid_Lock); |
50c2f753 | 665 | /* Although there should not be any requests blocked on |
1da177e4 | 666 | this queue it can not hurt to be paranoid and try to wake up requests |
09d1db5c | 667 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
668 | to the same server - they now will see the session is in exit state |
669 | and get out of SendReceive. */ | |
670 | wake_up_all(&server->request_q); | |
671 | /* give those requests time to exit */ | |
b8643e1b | 672 | msleep(125); |
50c2f753 | 673 | |
fb8c4b14 | 674 | if (server->ssocket) { |
1da177e4 LT |
675 | sock_release(csocket); |
676 | server->ssocket = NULL; | |
677 | } | |
b8643e1b SF |
678 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
679 | if (bigbuf != NULL) | |
680 | cifs_buf_release(bigbuf); | |
681 | if (smallbuf != NULL) | |
682 | cifs_small_buf_release(smallbuf); | |
1da177e4 LT |
683 | |
684 | read_lock(&GlobalSMBSeslock); | |
685 | if (list_empty(&server->pending_mid_q)) { | |
09d1db5c SF |
686 | /* loop through server session structures attached to this and |
687 | mark them dead */ | |
1da177e4 LT |
688 | list_for_each(tmp, &GlobalSMBSessionList) { |
689 | ses = | |
690 | list_entry(tmp, struct cifsSesInfo, | |
691 | cifsSessionList); | |
692 | if (ses->server == server) { | |
693 | ses->status = CifsExiting; | |
694 | ses->server = NULL; | |
695 | } | |
696 | } | |
697 | read_unlock(&GlobalSMBSeslock); | |
698 | } else { | |
31ca3bc3 SF |
699 | /* although we can not zero the server struct pointer yet, |
700 | since there are active requests which may depnd on them, | |
701 | mark the corresponding SMB sessions as exiting too */ | |
702 | list_for_each(tmp, &GlobalSMBSessionList) { | |
703 | ses = list_entry(tmp, struct cifsSesInfo, | |
704 | cifsSessionList); | |
705 | if (ses->server == server) { | |
706 | ses->status = CifsExiting; | |
707 | } | |
708 | } | |
709 | ||
1da177e4 LT |
710 | spin_lock(&GlobalMid_Lock); |
711 | list_for_each(tmp, &server->pending_mid_q) { | |
712 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
713 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
50c2f753 SF |
714 | cFYI(1, ("Clearing Mid 0x%x - waking up ", |
715 | mid_entry->mid)); | |
1da177e4 | 716 | task_to_wake = mid_entry->tsk; |
fb8c4b14 | 717 | if (task_to_wake) { |
1da177e4 LT |
718 | wake_up_process(task_to_wake); |
719 | } | |
720 | } | |
721 | } | |
722 | spin_unlock(&GlobalMid_Lock); | |
723 | read_unlock(&GlobalSMBSeslock); | |
1da177e4 | 724 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 725 | msleep(125); |
1da177e4 LT |
726 | } |
727 | ||
f191401f | 728 | if (!list_empty(&server->pending_mid_q)) { |
50c2f753 | 729 | /* mpx threads have not exited yet give them |
1da177e4 | 730 | at least the smb send timeout time for long ops */ |
31ca3bc3 SF |
731 | /* due to delays on oplock break requests, we need |
732 | to wait at least 45 seconds before giving up | |
733 | on a request getting a response and going ahead | |
734 | and killing cifsd */ | |
1da177e4 | 735 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 736 | msleep(46000); |
1da177e4 LT |
737 | /* if threads still have not exited they are probably never |
738 | coming home not much else we can do but free the memory */ | |
739 | } | |
1da177e4 LT |
740 | |
741 | write_lock(&GlobalSMBSeslock); | |
742 | atomic_dec(&tcpSesAllocCount); | |
743 | length = tcpSesAllocCount.counter; | |
31ca3bc3 SF |
744 | |
745 | /* last chance to mark ses pointers invalid | |
746 | if there are any pointing to this (e.g | |
50c2f753 | 747 | if a crazy root user tried to kill cifsd |
31ca3bc3 SF |
748 | kernel thread explicitly this might happen) */ |
749 | list_for_each(tmp, &GlobalSMBSessionList) { | |
750 | ses = list_entry(tmp, struct cifsSesInfo, | |
751 | cifsSessionList); | |
752 | if (ses->server == server) { | |
753 | ses->server = NULL; | |
754 | } | |
755 | } | |
1da177e4 | 756 | write_unlock(&GlobalSMBSeslock); |
31ca3bc3 SF |
757 | |
758 | kfree(server); | |
fb8c4b14 | 759 | if (length > 0) { |
1da177e4 LT |
760 | mempool_resize(cifs_req_poolp, |
761 | length + cifs_min_rcv, | |
762 | GFP_KERNEL); | |
763 | } | |
50c2f753 | 764 | |
1da177e4 LT |
765 | return 0; |
766 | } | |
767 | ||
1da177e4 | 768 | static int |
50c2f753 SF |
769 | cifs_parse_mount_options(char *options, const char *devname, |
770 | struct smb_vol *vol) | |
1da177e4 LT |
771 | { |
772 | char *value; | |
773 | char *data; | |
774 | unsigned int temp_len, i, j; | |
775 | char separator[2]; | |
776 | ||
777 | separator[0] = ','; | |
50c2f753 | 778 | separator[1] = 0; |
1da177e4 | 779 | |
12e36b2f | 780 | if (Local_System_Name[0] != 0) |
50c2f753 | 781 | memcpy(vol->source_rfc1001_name, Local_System_Name, 15); |
2cd646a2 | 782 | else { |
12e36b2f | 783 | char *nodename = utsname()->nodename; |
50c2f753 SF |
784 | int n = strnlen(nodename, 15); |
785 | memset(vol->source_rfc1001_name, 0x20, 15); | |
786 | for (i = 0; i < n; i++) { | |
2cd646a2 SF |
787 | /* does not have to be perfect mapping since field is |
788 | informational, only used for servers that do not support | |
789 | port 445 and it can be overridden at mount time */ | |
12e36b2f | 790 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
2cd646a2 | 791 | } |
1da177e4 LT |
792 | } |
793 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
794 | /* null target name indicates to use *SMBSERVR default called name |
795 | if we end up sending RFC1001 session initialize */ | |
796 | vol->target_rfc1001_name[0] = 0; | |
1da177e4 LT |
797 | vol->linux_uid = current->uid; /* current->euid instead? */ |
798 | vol->linux_gid = current->gid; | |
799 | vol->dir_mode = S_IRWXUGO; | |
800 | /* 2767 perms indicate mandatory locking support */ | |
801 | vol->file_mode = S_IALLUGO & ~(S_ISUID | S_IXGRP); | |
802 | ||
803 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
804 | vol->rw = TRUE; | |
ac67055e JA |
805 | /* default is always to request posix paths. */ |
806 | vol->posix_paths = 1; | |
807 | ||
1da177e4 LT |
808 | if (!options) |
809 | return 1; | |
810 | ||
50c2f753 | 811 | if (strncmp(options, "sep=", 4) == 0) { |
fb8c4b14 | 812 | if (options[4] != 0) { |
1da177e4 LT |
813 | separator[0] = options[4]; |
814 | options += 5; | |
815 | } else { | |
467a8f8d | 816 | cFYI(1, ("Null separator not allowed")); |
1da177e4 LT |
817 | } |
818 | } | |
50c2f753 | 819 | |
1da177e4 LT |
820 | while ((data = strsep(&options, separator)) != NULL) { |
821 | if (!*data) | |
822 | continue; | |
823 | if ((value = strchr(data, '=')) != NULL) | |
824 | *value++ = '\0'; | |
825 | ||
50c2f753 SF |
826 | /* Have to parse this before we parse for "user" */ |
827 | if (strnicmp(data, "user_xattr", 10) == 0) { | |
1da177e4 | 828 | vol->no_xattr = 0; |
50c2f753 | 829 | } else if (strnicmp(data, "nouser_xattr", 12) == 0) { |
1da177e4 LT |
830 | vol->no_xattr = 1; |
831 | } else if (strnicmp(data, "user", 4) == 0) { | |
4b952a9b | 832 | if (!value) { |
1da177e4 LT |
833 | printk(KERN_WARNING |
834 | "CIFS: invalid or missing username\n"); | |
835 | return 1; /* needs_arg; */ | |
fb8c4b14 | 836 | } else if (!*value) { |
4b952a9b SF |
837 | /* null user, ie anonymous, authentication */ |
838 | vol->nullauth = 1; | |
1da177e4 LT |
839 | } |
840 | if (strnlen(value, 200) < 200) { | |
841 | vol->username = value; | |
842 | } else { | |
843 | printk(KERN_WARNING "CIFS: username too long\n"); | |
844 | return 1; | |
845 | } | |
846 | } else if (strnicmp(data, "pass", 4) == 0) { | |
847 | if (!value) { | |
848 | vol->password = NULL; | |
849 | continue; | |
fb8c4b14 | 850 | } else if (value[0] == 0) { |
1da177e4 LT |
851 | /* check if string begins with double comma |
852 | since that would mean the password really | |
853 | does start with a comma, and would not | |
854 | indicate an empty string */ | |
fb8c4b14 | 855 | if (value[1] != separator[0]) { |
1da177e4 LT |
856 | vol->password = NULL; |
857 | continue; | |
858 | } | |
859 | } | |
860 | temp_len = strlen(value); | |
861 | /* removed password length check, NTLM passwords | |
862 | can be arbitrarily long */ | |
863 | ||
50c2f753 | 864 | /* if comma in password, the string will be |
1da177e4 LT |
865 | prematurely null terminated. Commas in password are |
866 | specified across the cifs mount interface by a double | |
867 | comma ie ,, and a comma used as in other cases ie ',' | |
868 | as a parameter delimiter/separator is single and due | |
869 | to the strsep above is temporarily zeroed. */ | |
870 | ||
871 | /* NB: password legally can have multiple commas and | |
872 | the only illegal character in a password is null */ | |
873 | ||
50c2f753 | 874 | if ((value[temp_len] == 0) && |
09d1db5c | 875 | (value[temp_len+1] == separator[0])) { |
1da177e4 LT |
876 | /* reinsert comma */ |
877 | value[temp_len] = separator[0]; | |
50c2f753 SF |
878 | temp_len += 2; /* move after second comma */ |
879 | while (value[temp_len] != 0) { | |
1da177e4 | 880 | if (value[temp_len] == separator[0]) { |
50c2f753 | 881 | if (value[temp_len+1] == |
09d1db5c SF |
882 | separator[0]) { |
883 | /* skip second comma */ | |
884 | temp_len++; | |
50c2f753 | 885 | } else { |
1da177e4 LT |
886 | /* single comma indicating start |
887 | of next parm */ | |
888 | break; | |
889 | } | |
890 | } | |
891 | temp_len++; | |
892 | } | |
fb8c4b14 | 893 | if (value[temp_len] == 0) { |
1da177e4 LT |
894 | options = NULL; |
895 | } else { | |
896 | value[temp_len] = 0; | |
897 | /* point option to start of next parm */ | |
898 | options = value + temp_len + 1; | |
899 | } | |
50c2f753 | 900 | /* go from value to value + temp_len condensing |
1da177e4 LT |
901 | double commas to singles. Note that this ends up |
902 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 903 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
fb8c4b14 | 904 | if (vol->password == NULL) { |
50c2f753 SF |
905 | printk(KERN_WARNING "CIFS: no memory " |
906 | "for password\n"); | |
433dc24f SF |
907 | return 1; |
908 | } | |
50c2f753 | 909 | for (i = 0, j = 0; i < temp_len; i++, j++) { |
1da177e4 | 910 | vol->password[j] = value[i]; |
fb8c4b14 | 911 | if (value[i] == separator[0] |
09d1db5c | 912 | && value[i+1] == separator[0]) { |
1da177e4 LT |
913 | /* skip second comma */ |
914 | i++; | |
915 | } | |
916 | } | |
917 | vol->password[j] = 0; | |
918 | } else { | |
e915fc49 | 919 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
fb8c4b14 | 920 | if (vol->password == NULL) { |
50c2f753 SF |
921 | printk(KERN_WARNING "CIFS: no memory " |
922 | "for password\n"); | |
433dc24f SF |
923 | return 1; |
924 | } | |
1da177e4 LT |
925 | strcpy(vol->password, value); |
926 | } | |
927 | } else if (strnicmp(data, "ip", 2) == 0) { | |
928 | if (!value || !*value) { | |
929 | vol->UNCip = NULL; | |
930 | } else if (strnlen(value, 35) < 35) { | |
931 | vol->UNCip = value; | |
932 | } else { | |
50c2f753 SF |
933 | printk(KERN_WARNING "CIFS: ip address " |
934 | "too long\n"); | |
1da177e4 LT |
935 | return 1; |
936 | } | |
50c2f753 SF |
937 | } else if (strnicmp(data, "sec", 3) == 0) { |
938 | if (!value || !*value) { | |
939 | cERROR(1, ("no security value specified")); | |
940 | continue; | |
941 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
942 | vol->secFlg |= CIFSSEC_MAY_KRB5 | | |
189acaae | 943 | CIFSSEC_MUST_SIGN; |
bf820679 | 944 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
50c2f753 SF |
945 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
946 | CIFSSEC_MAY_KRB5; */ | |
947 | cERROR(1, ("Krb5 cifs privacy not supported")); | |
bf820679 SF |
948 | return 1; |
949 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 950 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
bf820679 | 951 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 952 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 953 | CIFSSEC_MUST_SIGN; |
bf820679 | 954 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 955 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 956 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 957 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 958 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
959 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
960 | /* ntlm is default so can be turned off too */ | |
750d1151 | 961 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 962 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 963 | /* BB is there a better way to do this? */ |
750d1151 | 964 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
965 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
966 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
50c2f753 | 967 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 968 | #endif |
bf820679 | 969 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 970 | vol->nullauth = 1; |
50c2f753 SF |
971 | } else { |
972 | cERROR(1, ("bad security option: %s", value)); | |
973 | return 1; | |
974 | } | |
1da177e4 LT |
975 | } else if ((strnicmp(data, "unc", 3) == 0) |
976 | || (strnicmp(data, "target", 6) == 0) | |
977 | || (strnicmp(data, "path", 4) == 0)) { | |
978 | if (!value || !*value) { | |
50c2f753 SF |
979 | printk(KERN_WARNING "CIFS: invalid path to " |
980 | "network resource\n"); | |
1da177e4 LT |
981 | return 1; /* needs_arg; */ |
982 | } | |
983 | if ((temp_len = strnlen(value, 300)) < 300) { | |
50c2f753 | 984 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 985 | if (vol->UNC == NULL) |
1da177e4 | 986 | return 1; |
50c2f753 | 987 | strcpy(vol->UNC, value); |
1da177e4 LT |
988 | if (strncmp(vol->UNC, "//", 2) == 0) { |
989 | vol->UNC[0] = '\\'; | |
990 | vol->UNC[1] = '\\'; | |
50c2f753 | 991 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
1da177e4 | 992 | printk(KERN_WARNING |
50c2f753 SF |
993 | "CIFS: UNC Path does not begin " |
994 | "with // or \\\\ \n"); | |
1da177e4 LT |
995 | return 1; |
996 | } | |
997 | } else { | |
998 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
999 | return 1; | |
1000 | } | |
1001 | } else if ((strnicmp(data, "domain", 3) == 0) | |
1002 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
1003 | if (!value || !*value) { | |
1004 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
1005 | return 1; /* needs_arg; */ | |
1006 | } | |
1007 | /* BB are there cases in which a comma can be valid in | |
1008 | a domain name and need special handling? */ | |
3979877e | 1009 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
1010 | vol->domainname = value; |
1011 | cFYI(1, ("Domain name set")); | |
1012 | } else { | |
50c2f753 SF |
1013 | printk(KERN_WARNING "CIFS: domain name too " |
1014 | "long\n"); | |
1da177e4 LT |
1015 | return 1; |
1016 | } | |
50c2f753 SF |
1017 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
1018 | if (!value || !*value) { | |
1019 | printk(KERN_WARNING | |
1020 | "CIFS: invalid path prefix\n"); | |
1021 | return 1; /* needs_argument */ | |
1022 | } | |
1023 | if ((temp_len = strnlen(value, 1024)) < 1024) { | |
4523cc30 | 1024 | if (value[0] != '/') |
2fe87f02 | 1025 | temp_len++; /* missing leading slash */ |
50c2f753 SF |
1026 | vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); |
1027 | if (vol->prepath == NULL) | |
1028 | return 1; | |
4523cc30 | 1029 | if (value[0] != '/') { |
2fe87f02 | 1030 | vol->prepath[0] = '/'; |
50c2f753 | 1031 | strcpy(vol->prepath+1, value); |
2fe87f02 | 1032 | } else |
50c2f753 SF |
1033 | strcpy(vol->prepath, value); |
1034 | cFYI(1, ("prefix path %s", vol->prepath)); | |
1035 | } else { | |
1036 | printk(KERN_WARNING "CIFS: prefix too long\n"); | |
1037 | return 1; | |
1038 | } | |
1da177e4 LT |
1039 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
1040 | if (!value || !*value) { | |
63135e08 SF |
1041 | printk(KERN_WARNING "CIFS: invalid iocharset " |
1042 | "specified\n"); | |
1da177e4 LT |
1043 | return 1; /* needs_arg; */ |
1044 | } | |
1045 | if (strnlen(value, 65) < 65) { | |
50c2f753 | 1046 | if (strnicmp(value, "default", 7)) |
1da177e4 | 1047 | vol->iocharset = value; |
50c2f753 SF |
1048 | /* if iocharset not set then load_nls_default |
1049 | is used by caller */ | |
1050 | cFYI(1, ("iocharset set to %s", value)); | |
1da177e4 | 1051 | } else { |
63135e08 SF |
1052 | printk(KERN_WARNING "CIFS: iocharset name " |
1053 | "too long.\n"); | |
1da177e4 LT |
1054 | return 1; |
1055 | } | |
1056 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1057 | if (value && *value) { | |
1058 | vol->linux_uid = | |
1059 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1060 | vol->override_uid = 1; |
1da177e4 LT |
1061 | } |
1062 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1063 | if (value && *value) { | |
1064 | vol->linux_gid = | |
1065 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1066 | vol->override_gid = 1; |
1da177e4 LT |
1067 | } |
1068 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1069 | if (value && *value) { | |
1070 | vol->file_mode = | |
1071 | simple_strtoul(value, &value, 0); | |
1072 | } | |
1073 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1074 | if (value && *value) { | |
1075 | vol->dir_mode = | |
1076 | simple_strtoul(value, &value, 0); | |
1077 | } | |
1078 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1079 | if (value && *value) { | |
1080 | vol->dir_mode = | |
1081 | simple_strtoul(value, &value, 0); | |
1082 | } | |
1083 | } else if (strnicmp(data, "port", 4) == 0) { | |
1084 | if (value && *value) { | |
1085 | vol->port = | |
1086 | simple_strtoul(value, &value, 0); | |
1087 | } | |
1088 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1089 | if (value && *value) { | |
1090 | vol->rsize = | |
1091 | simple_strtoul(value, &value, 0); | |
1092 | } | |
1093 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1094 | if (value && *value) { | |
1095 | vol->wsize = | |
1096 | simple_strtoul(value, &value, 0); | |
1097 | } | |
1098 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1099 | if (value && *value) { | |
1100 | vol->sockopt = | |
1101 | simple_strtoul(value, &value, 0); | |
1102 | } | |
1103 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1104 | if (!value || !*value || (*value == ' ')) { | |
63135e08 | 1105 | cFYI(1, ("invalid (empty) netbiosname")); |
1da177e4 | 1106 | } else { |
50c2f753 SF |
1107 | memset(vol->source_rfc1001_name, 0x20, 15); |
1108 | for (i = 0; i < 15; i++) { | |
1109 | /* BB are there cases in which a comma can be | |
1da177e4 LT |
1110 | valid in this workstation netbios name (and need |
1111 | special handling)? */ | |
1112 | ||
1113 | /* We do not uppercase netbiosname for user */ | |
50c2f753 | 1114 | if (value[i] == 0) |
1da177e4 | 1115 | break; |
50c2f753 SF |
1116 | else |
1117 | vol->source_rfc1001_name[i] = | |
1118 | value[i]; | |
1da177e4 LT |
1119 | } |
1120 | /* The string has 16th byte zero still from | |
1121 | set at top of the function */ | |
50c2f753 SF |
1122 | if ((i == 15) && (value[i] != 0)) |
1123 | printk(KERN_WARNING "CIFS: netbiosname" | |
1124 | " longer than 15 truncated.\n"); | |
a10faeb2 SF |
1125 | } |
1126 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1127 | /* servernetbiosname specified override *SMBSERVER */ | |
1128 | if (!value || !*value || (*value == ' ')) { | |
467a8f8d | 1129 | cFYI(1, ("empty server netbiosname specified")); |
a10faeb2 SF |
1130 | } else { |
1131 | /* last byte, type, is 0x20 for servr type */ | |
50c2f753 | 1132 | memset(vol->target_rfc1001_name, 0x20, 16); |
a10faeb2 | 1133 | |
50c2f753 | 1134 | for (i = 0; i < 15; i++) { |
a10faeb2 | 1135 | /* BB are there cases in which a comma can be |
50c2f753 SF |
1136 | valid in this workstation netbios name |
1137 | (and need special handling)? */ | |
a10faeb2 | 1138 | |
50c2f753 SF |
1139 | /* user or mount helper must uppercase |
1140 | the netbiosname */ | |
1141 | if (value[i] == 0) | |
a10faeb2 SF |
1142 | break; |
1143 | else | |
50c2f753 SF |
1144 | vol->target_rfc1001_name[i] = |
1145 | value[i]; | |
a10faeb2 SF |
1146 | } |
1147 | /* The string has 16th byte zero still from | |
1148 | set at top of the function */ | |
50c2f753 SF |
1149 | if ((i == 15) && (value[i] != 0)) |
1150 | printk(KERN_WARNING "CIFS: server net" | |
1151 | "biosname longer than 15 truncated.\n"); | |
1da177e4 LT |
1152 | } |
1153 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1154 | /* ignore */ | |
1155 | } else if (strnicmp(data, "version", 3) == 0) { | |
1156 | /* ignore */ | |
50c2f753 | 1157 | } else if (strnicmp(data, "guest", 5) == 0) { |
1da177e4 LT |
1158 | /* ignore */ |
1159 | } else if (strnicmp(data, "rw", 2) == 0) { | |
1160 | vol->rw = TRUE; | |
1161 | } else if ((strnicmp(data, "suid", 4) == 0) || | |
1162 | (strnicmp(data, "nosuid", 6) == 0) || | |
1163 | (strnicmp(data, "exec", 4) == 0) || | |
1164 | (strnicmp(data, "noexec", 6) == 0) || | |
1165 | (strnicmp(data, "nodev", 5) == 0) || | |
1166 | (strnicmp(data, "noauto", 6) == 0) || | |
1167 | (strnicmp(data, "dev", 3) == 0)) { | |
1168 | /* The mount tool or mount.cifs helper (if present) | |
50c2f753 SF |
1169 | uses these opts to set flags, and the flags are read |
1170 | by the kernel vfs layer before we get here (ie | |
1171 | before read super) so there is no point trying to | |
1172 | parse these options again and set anything and it | |
1173 | is ok to just ignore them */ | |
1da177e4 LT |
1174 | continue; |
1175 | } else if (strnicmp(data, "ro", 2) == 0) { | |
1176 | vol->rw = FALSE; | |
1177 | } else if (strnicmp(data, "hard", 4) == 0) { | |
1178 | vol->retry = 1; | |
1179 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1180 | vol->retry = 0; | |
1181 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1182 | vol->noperm = 0; | |
1183 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1184 | vol->noperm = 1; | |
6a0b4824 SF |
1185 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1186 | vol->remap = 1; | |
1187 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1188 | vol->remap = 0; | |
50c2f753 SF |
1189 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1190 | vol->sfu_emul = 1; | |
1191 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1192 | vol->sfu_emul = 0; | |
ac67055e JA |
1193 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1194 | vol->posix_paths = 1; | |
1195 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1196 | vol->posix_paths = 0; | |
c18c842b SF |
1197 | } else if (strnicmp(data, "nounix", 6) == 0) { |
1198 | vol->no_linux_ext = 1; | |
1199 | } else if (strnicmp(data, "nolinux", 7) == 0) { | |
1200 | vol->no_linux_ext = 1; | |
50c2f753 | 1201 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
a10faeb2 | 1202 | (strnicmp(data, "ignorecase", 10) == 0)) { |
50c2f753 | 1203 | vol->nocase = 1; |
c46fa8ac SF |
1204 | } else if (strnicmp(data, "brl", 3) == 0) { |
1205 | vol->nobrl = 0; | |
50c2f753 | 1206 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1207 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1208 | vol->nobrl = 1; |
d3485d37 SF |
1209 | /* turn off mandatory locking in mode |
1210 | if remote locking is turned off since the | |
1211 | local vfs will do advisory */ | |
50c2f753 SF |
1212 | if (vol->file_mode == |
1213 | (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
d3485d37 | 1214 | vol->file_mode = S_IALLUGO; |
1da177e4 LT |
1215 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1216 | vol->setuids = 1; | |
1217 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1218 | vol->setuids = 0; | |
1219 | } else if (strnicmp(data, "nohard", 6) == 0) { | |
1220 | vol->retry = 0; | |
1221 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1222 | vol->retry = 1; | |
1223 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1224 | vol->intr = 0; | |
1225 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1226 | vol->intr = 1; | |
50c2f753 | 1227 | } else if (strnicmp(data, "serverino", 7) == 0) { |
1da177e4 | 1228 | vol->server_ino = 1; |
50c2f753 | 1229 | } else if (strnicmp(data, "noserverino", 9) == 0) { |
1da177e4 | 1230 | vol->server_ino = 0; |
50c2f753 | 1231 | } else if (strnicmp(data, "cifsacl", 7) == 0) { |
0a4b92c0 SF |
1232 | vol->cifs_acl = 1; |
1233 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1234 | vol->cifs_acl = 0; | |
50c2f753 | 1235 | } else if (strnicmp(data, "acl", 3) == 0) { |
1da177e4 | 1236 | vol->no_psx_acl = 0; |
50c2f753 | 1237 | } else if (strnicmp(data, "noacl", 5) == 0) { |
1da177e4 | 1238 | vol->no_psx_acl = 1; |
50c2f753 | 1239 | } else if (strnicmp(data, "sign", 4) == 0) { |
750d1151 SF |
1240 | vol->secFlg |= CIFSSEC_MUST_SIGN; |
1241 | /* } else if (strnicmp(data, "seal",4) == 0) { | |
1242 | vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
50c2f753 | 1243 | } else if (strnicmp(data, "direct", 6) == 0) { |
1da177e4 | 1244 | vol->direct_io = 1; |
50c2f753 | 1245 | } else if (strnicmp(data, "forcedirectio", 13) == 0) { |
1da177e4 | 1246 | vol->direct_io = 1; |
50c2f753 | 1247 | } else if (strnicmp(data, "in6_addr", 8) == 0) { |
1da177e4 LT |
1248 | if (!value || !*value) { |
1249 | vol->in6_addr = NULL; | |
1250 | } else if (strnlen(value, 49) == 48) { | |
1251 | vol->in6_addr = value; | |
1252 | } else { | |
50c2f753 SF |
1253 | printk(KERN_WARNING "CIFS: ip v6 address not " |
1254 | "48 characters long\n"); | |
1da177e4 LT |
1255 | return 1; |
1256 | } | |
1257 | } else if (strnicmp(data, "noac", 4) == 0) { | |
50c2f753 SF |
1258 | printk(KERN_WARNING "CIFS: Mount option noac not " |
1259 | "supported. Instead set " | |
1260 | "/proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1da177e4 | 1261 | } else |
50c2f753 SF |
1262 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n", |
1263 | data); | |
1da177e4 LT |
1264 | } |
1265 | if (vol->UNC == NULL) { | |
4523cc30 | 1266 | if (devname == NULL) { |
50c2f753 SF |
1267 | printk(KERN_WARNING "CIFS: Missing UNC name for mount " |
1268 | "target\n"); | |
1da177e4 LT |
1269 | return 1; |
1270 | } | |
1271 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
50c2f753 | 1272 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1273 | if (vol->UNC == NULL) |
1da177e4 | 1274 | return 1; |
50c2f753 | 1275 | strcpy(vol->UNC, devname); |
1da177e4 LT |
1276 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1277 | vol->UNC[0] = '\\'; | |
1278 | vol->UNC[1] = '\\'; | |
1279 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
50c2f753 SF |
1280 | printk(KERN_WARNING "CIFS: UNC Path does not " |
1281 | "begin with // or \\\\ \n"); | |
1da177e4 LT |
1282 | return 1; |
1283 | } | |
1284 | } else { | |
1285 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1286 | return 1; | |
1287 | } | |
1288 | } | |
fb8c4b14 | 1289 | if (vol->UNCip == NULL) |
1da177e4 LT |
1290 | vol->UNCip = &vol->UNC[2]; |
1291 | ||
1292 | return 0; | |
1293 | } | |
1294 | ||
1295 | static struct cifsSesInfo * | |
50c2f753 | 1296 | cifs_find_tcp_session(struct in_addr *target_ip_addr, |
1da177e4 LT |
1297 | struct in6_addr *target_ip6_addr, |
1298 | char *userName, struct TCP_Server_Info **psrvTcp) | |
1299 | { | |
1300 | struct list_head *tmp; | |
1301 | struct cifsSesInfo *ses; | |
1302 | *psrvTcp = NULL; | |
1303 | read_lock(&GlobalSMBSeslock); | |
1304 | ||
1305 | list_for_each(tmp, &GlobalSMBSessionList) { | |
1306 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
1307 | if (ses->server) { | |
50c2f753 | 1308 | if ((target_ip_addr && |
1da177e4 LT |
1309 | (ses->server->addr.sockAddr.sin_addr.s_addr |
1310 | == target_ip_addr->s_addr)) || (target_ip6_addr | |
1311 | && memcmp(&ses->server->addr.sockAddr6.sin6_addr, | |
50c2f753 SF |
1312 | target_ip6_addr, sizeof(*target_ip6_addr)))) { |
1313 | /* BB lock server and tcp session and increment | |
1314 | use count here?? */ | |
1315 | ||
1316 | /* found a match on the TCP session */ | |
1317 | *psrvTcp = ses->server; | |
1318 | ||
1da177e4 LT |
1319 | /* BB check if reconnection needed */ |
1320 | if (strncmp | |
1321 | (ses->userName, userName, | |
1322 | MAX_USERNAME_SIZE) == 0){ | |
1323 | read_unlock(&GlobalSMBSeslock); | |
50c2f753 SF |
1324 | /* Found exact match on both TCP and |
1325 | SMB sessions */ | |
1326 | return ses; | |
1da177e4 LT |
1327 | } |
1328 | } | |
1329 | } | |
1330 | /* else tcp and smb sessions need reconnection */ | |
1331 | } | |
1332 | read_unlock(&GlobalSMBSeslock); | |
1333 | return NULL; | |
1334 | } | |
1335 | ||
1336 | static struct cifsTconInfo * | |
1337 | find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) | |
1338 | { | |
1339 | struct list_head *tmp; | |
1340 | struct cifsTconInfo *tcon; | |
1341 | ||
1342 | read_lock(&GlobalSMBSeslock); | |
1343 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
e466e487 | 1344 | cFYI(1, ("Next tcon")); |
1da177e4 LT |
1345 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); |
1346 | if (tcon->ses) { | |
1347 | if (tcon->ses->server) { | |
1348 | cFYI(1, | |
e466e487 | 1349 | ("old ip addr: %x == new ip %x ?", |
1da177e4 LT |
1350 | tcon->ses->server->addr.sockAddr.sin_addr. |
1351 | s_addr, new_target_ip_addr)); | |
1352 | if (tcon->ses->server->addr.sockAddr.sin_addr. | |
1353 | s_addr == new_target_ip_addr) { | |
e466e487 | 1354 | /* BB lock tcon, server and tcp session and increment use count here? */ |
1da177e4 LT |
1355 | /* found a match on the TCP session */ |
1356 | /* BB check if reconnection needed */ | |
50c2f753 SF |
1357 | cFYI(1, |
1358 | ("IP match, old UNC: %s new: %s", | |
1da177e4 LT |
1359 | tcon->treeName, uncName)); |
1360 | if (strncmp | |
1361 | (tcon->treeName, uncName, | |
1362 | MAX_TREE_SIZE) == 0) { | |
1363 | cFYI(1, | |
e466e487 | 1364 | ("and old usr: %s new: %s", |
1da177e4 LT |
1365 | tcon->treeName, uncName)); |
1366 | if (strncmp | |
1367 | (tcon->ses->userName, | |
1368 | userName, | |
1369 | MAX_USERNAME_SIZE) == 0) { | |
1370 | read_unlock(&GlobalSMBSeslock); | |
e466e487 SF |
1371 | /* matched smb session |
1372 | (user name */ | |
1373 | return tcon; | |
1da177e4 LT |
1374 | } |
1375 | } | |
1376 | } | |
1377 | } | |
1378 | } | |
1379 | } | |
1380 | read_unlock(&GlobalSMBSeslock); | |
1381 | return NULL; | |
1382 | } | |
1383 | ||
1384 | int | |
1385 | connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo, | |
737b758c SF |
1386 | const char *old_path, const struct nls_table *nls_codepage, |
1387 | int remap) | |
1da177e4 LT |
1388 | { |
1389 | unsigned char *referrals = NULL; | |
1390 | unsigned int num_referrals; | |
1391 | int rc = 0; | |
1392 | ||
50c2f753 | 1393 | rc = get_dfs_path(xid, pSesInfo, old_path, nls_codepage, |
737b758c | 1394 | &num_referrals, &referrals, remap); |
1da177e4 LT |
1395 | |
1396 | /* BB Add in code to: if valid refrl, if not ip address contact | |
50c2f753 | 1397 | the helper that resolves tcp names, mount to it, try to |
1da177e4 LT |
1398 | tcon to it unmount it if fail */ |
1399 | ||
f99d49ad | 1400 | kfree(referrals); |
1da177e4 LT |
1401 | |
1402 | return rc; | |
1403 | } | |
1404 | ||
1405 | int | |
50c2f753 SF |
1406 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, |
1407 | const struct nls_table *nls_codepage, unsigned int *pnum_referrals, | |
1408 | unsigned char **preferrals, int remap) | |
1da177e4 LT |
1409 | { |
1410 | char *temp_unc; | |
1411 | int rc = 0; | |
1412 | ||
1413 | *pnum_referrals = 0; | |
1414 | ||
1415 | if (pSesInfo->ipc_tid == 0) { | |
1416 | temp_unc = kmalloc(2 /* for slashes */ + | |
50c2f753 SF |
1417 | strnlen(pSesInfo->serverName, |
1418 | SERVER_NAME_LEN_WITH_NULL * 2) | |
1da177e4 LT |
1419 | + 1 + 4 /* slash IPC$ */ + 2, |
1420 | GFP_KERNEL); | |
1421 | if (temp_unc == NULL) | |
1422 | return -ENOMEM; | |
1423 | temp_unc[0] = '\\'; | |
1424 | temp_unc[1] = '\\'; | |
1425 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1426 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1427 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1428 | cFYI(1, | |
50c2f753 | 1429 | ("CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid)); |
1da177e4 LT |
1430 | kfree(temp_unc); |
1431 | } | |
1432 | if (rc == 0) | |
1433 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, | |
737b758c | 1434 | pnum_referrals, nls_codepage, remap); |
1da177e4 LT |
1435 | |
1436 | return rc; | |
1437 | } | |
1438 | ||
1439 | /* See RFC1001 section 14 on representation of Netbios names */ | |
50c2f753 | 1440 | static void rfc1002mangle(char *target, char *source, unsigned int length) |
1da177e4 | 1441 | { |
50c2f753 | 1442 | unsigned int i, j; |
1da177e4 | 1443 | |
50c2f753 | 1444 | for (i = 0, j = 0; i < (length); i++) { |
1da177e4 LT |
1445 | /* mask a nibble at a time and encode */ |
1446 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1447 | target[j+1] = 'A' + (0x0F & source[i]); | |
50c2f753 | 1448 | j += 2; |
1da177e4 LT |
1449 | } |
1450 | ||
1451 | } | |
1452 | ||
1453 | ||
1454 | static int | |
50c2f753 SF |
1455 | ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, |
1456 | char *netbios_name, char *target_name) | |
1da177e4 LT |
1457 | { |
1458 | int rc = 0; | |
1459 | int connected = 0; | |
1460 | __be16 orig_port = 0; | |
1461 | ||
fb8c4b14 | 1462 | if (*csocket == NULL) { |
50c2f753 SF |
1463 | rc = sock_create_kern(PF_INET, SOCK_STREAM, |
1464 | IPPROTO_TCP, csocket); | |
1da177e4 | 1465 | if (rc < 0) { |
50c2f753 | 1466 | cERROR(1, ("Error %d creating socket", rc)); |
1da177e4 LT |
1467 | *csocket = NULL; |
1468 | return rc; | |
1469 | } else { | |
1470 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
467a8f8d | 1471 | cFYI(1, ("Socket created")); |
50c2f753 | 1472 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
1da177e4 LT |
1473 | } |
1474 | } | |
1475 | ||
1476 | psin_server->sin_family = AF_INET; | |
fb8c4b14 | 1477 | if (psin_server->sin_port) { /* user overrode default port */ |
1da177e4 LT |
1478 | rc = (*csocket)->ops->connect(*csocket, |
1479 | (struct sockaddr *) psin_server, | |
50c2f753 | 1480 | sizeof (struct sockaddr_in), 0); |
1da177e4 LT |
1481 | if (rc >= 0) |
1482 | connected = 1; | |
50c2f753 | 1483 | } |
1da177e4 | 1484 | |
fb8c4b14 | 1485 | if (!connected) { |
50c2f753 | 1486 | /* save original port so we can retry user specified port |
1da177e4 LT |
1487 | later if fall back ports fail this time */ |
1488 | orig_port = psin_server->sin_port; | |
1489 | ||
1490 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1491 | if (psin_server->sin_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1492 | psin_server->sin_port = htons(CIFS_PORT); |
1493 | ||
1494 | rc = (*csocket)->ops->connect(*csocket, | |
1495 | (struct sockaddr *) psin_server, | |
50c2f753 | 1496 | sizeof (struct sockaddr_in), 0); |
1da177e4 LT |
1497 | if (rc >= 0) |
1498 | connected = 1; | |
1499 | } | |
1500 | } | |
1501 | if (!connected) { | |
1502 | psin_server->sin_port = htons(RFC1001_PORT); | |
1503 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
50c2f753 SF |
1504 | psin_server, |
1505 | sizeof (struct sockaddr_in), 0); | |
1506 | if (rc >= 0) | |
1da177e4 LT |
1507 | connected = 1; |
1508 | } | |
1509 | ||
1510 | /* give up here - unless we want to retry on different | |
1511 | protocol families some day */ | |
1512 | if (!connected) { | |
fb8c4b14 | 1513 | if (orig_port) |
1da177e4 | 1514 | psin_server->sin_port = orig_port; |
50c2f753 | 1515 | cFYI(1, ("Error %d connecting to server via ipv4", rc)); |
1da177e4 LT |
1516 | sock_release(*csocket); |
1517 | *csocket = NULL; | |
1518 | return rc; | |
1519 | } | |
50c2f753 SF |
1520 | /* Eventually check for other socket options to change from |
1521 | the default. sock_setsockopt not used because it expects | |
1da177e4 | 1522 | user space buffer */ |
50c2f753 SF |
1523 | cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", |
1524 | (*csocket)->sk->sk_sndbuf, | |
b387eaeb | 1525 | (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo)); |
1da177e4 | 1526 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; |
b387eaeb | 1527 | /* make the bufsizes depend on wsize/rsize and max requests */ |
fb8c4b14 | 1528 | if ((*csocket)->sk->sk_sndbuf < (200 * 1024)) |
b387eaeb | 1529 | (*csocket)->sk->sk_sndbuf = 200 * 1024; |
fb8c4b14 | 1530 | if ((*csocket)->sk->sk_rcvbuf < (140 * 1024)) |
b387eaeb | 1531 | (*csocket)->sk->sk_rcvbuf = 140 * 1024; |
1da177e4 LT |
1532 | |
1533 | /* send RFC1001 sessinit */ | |
fb8c4b14 | 1534 | if (psin_server->sin_port == htons(RFC1001_PORT)) { |
1da177e4 | 1535 | /* some servers require RFC1001 sessinit before sending |
50c2f753 | 1536 | negprot - BB check reconnection in case where second |
1da177e4 | 1537 | sessinit is sent but no second negprot */ |
50c2f753 SF |
1538 | struct rfc1002_session_packet *ses_init_buf; |
1539 | struct smb_hdr *smb_buf; | |
1540 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), | |
1541 | GFP_KERNEL); | |
fb8c4b14 | 1542 | if (ses_init_buf) { |
1da177e4 | 1543 | ses_init_buf->trailer.session_req.called_len = 32; |
fb8c4b14 | 1544 | if (target_name && (target_name[0] != 0)) { |
a10faeb2 SF |
1545 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, |
1546 | target_name, 16); | |
1547 | } else { | |
1548 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
50c2f753 | 1549 | DEFAULT_CIFS_CALLED_NAME, 16); |
a10faeb2 SF |
1550 | } |
1551 | ||
1da177e4 LT |
1552 | ses_init_buf->trailer.session_req.calling_len = 32; |
1553 | /* calling name ends in null (byte 16) from old smb | |
1554 | convention. */ | |
50c2f753 | 1555 | if (netbios_name && (netbios_name[0] != 0)) { |
1da177e4 | 1556 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, |
50c2f753 | 1557 | netbios_name, 16); |
1da177e4 LT |
1558 | } else { |
1559 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
50c2f753 | 1560 | "LINUX_CIFS_CLNT", 16); |
1da177e4 LT |
1561 | } |
1562 | ses_init_buf->trailer.session_req.scope1 = 0; | |
1563 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1564 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1565 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1566 | smb_buf->smb_buf_length = 0x81000044; | |
1567 | rc = smb_send(*csocket, smb_buf, 0x44, | |
1568 | (struct sockaddr *)psin_server); | |
1569 | kfree(ses_init_buf); | |
50c2f753 | 1570 | msleep(1); /* RFC1001 layer in at least one server |
083d3a2c SF |
1571 | requires very short break before negprot |
1572 | presumably because not expecting negprot | |
1573 | to follow so fast. This is a simple | |
50c2f753 | 1574 | solution that works without |
083d3a2c SF |
1575 | complicating the code and causes no |
1576 | significant slowing down on mount | |
1577 | for everyone else */ | |
1da177e4 | 1578 | } |
50c2f753 | 1579 | /* else the negprot may still work without this |
1da177e4 | 1580 | even though malloc failed */ |
50c2f753 | 1581 | |
1da177e4 | 1582 | } |
50c2f753 | 1583 | |
1da177e4 LT |
1584 | return rc; |
1585 | } | |
1586 | ||
1587 | static int | |
1588 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket) | |
1589 | { | |
1590 | int rc = 0; | |
1591 | int connected = 0; | |
1592 | __be16 orig_port = 0; | |
1593 | ||
fb8c4b14 | 1594 | if (*csocket == NULL) { |
50c2f753 SF |
1595 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, |
1596 | IPPROTO_TCP, csocket); | |
1da177e4 | 1597 | if (rc < 0) { |
50c2f753 | 1598 | cERROR(1, ("Error %d creating ipv6 socket", rc)); |
1da177e4 LT |
1599 | *csocket = NULL; |
1600 | return rc; | |
1601 | } else { | |
1602 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
fb8c4b14 | 1603 | cFYI(1, ("ipv6 Socket created")); |
1da177e4 LT |
1604 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
1605 | } | |
1606 | } | |
1607 | ||
1608 | psin_server->sin6_family = AF_INET6; | |
1609 | ||
fb8c4b14 | 1610 | if (psin_server->sin6_port) { /* user overrode default port */ |
1da177e4 LT |
1611 | rc = (*csocket)->ops->connect(*csocket, |
1612 | (struct sockaddr *) psin_server, | |
50c2f753 | 1613 | sizeof (struct sockaddr_in6), 0); |
1da177e4 LT |
1614 | if (rc >= 0) |
1615 | connected = 1; | |
50c2f753 | 1616 | } |
1da177e4 | 1617 | |
fb8c4b14 | 1618 | if (!connected) { |
50c2f753 | 1619 | /* save original port so we can retry user specified port |
1da177e4 LT |
1620 | later if fall back ports fail this time */ |
1621 | ||
1622 | orig_port = psin_server->sin6_port; | |
1623 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1624 | if (psin_server->sin6_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1625 | psin_server->sin6_port = htons(CIFS_PORT); |
1626 | ||
1627 | rc = (*csocket)->ops->connect(*csocket, | |
1628 | (struct sockaddr *) psin_server, | |
50c2f753 | 1629 | sizeof (struct sockaddr_in6), 0); |
1da177e4 LT |
1630 | if (rc >= 0) |
1631 | connected = 1; | |
1632 | } | |
1633 | } | |
1634 | if (!connected) { | |
1635 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1636 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
50c2f753 SF |
1637 | psin_server, sizeof (struct sockaddr_in6), 0); |
1638 | if (rc >= 0) | |
1da177e4 LT |
1639 | connected = 1; |
1640 | } | |
1641 | ||
1642 | /* give up here - unless we want to retry on different | |
1643 | protocol families some day */ | |
1644 | if (!connected) { | |
fb8c4b14 | 1645 | if (orig_port) |
1da177e4 | 1646 | psin_server->sin6_port = orig_port; |
50c2f753 | 1647 | cFYI(1, ("Error %d connecting to server via ipv6", rc)); |
1da177e4 LT |
1648 | sock_release(*csocket); |
1649 | *csocket = NULL; | |
1650 | return rc; | |
1651 | } | |
50c2f753 SF |
1652 | /* Eventually check for other socket options to change from |
1653 | the default. sock_setsockopt not used because it expects | |
1da177e4 LT |
1654 | user space buffer */ |
1655 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
50c2f753 | 1656 | |
1da177e4 LT |
1657 | return rc; |
1658 | } | |
1659 | ||
50c2f753 SF |
1660 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon, |
1661 | struct super_block *sb, struct smb_vol *vol_info) | |
8af18971 SF |
1662 | { |
1663 | /* if we are reconnecting then should we check to see if | |
1664 | * any requested capabilities changed locally e.g. via | |
1665 | * remount but we can not do much about it here | |
1666 | * if they have (even if we could detect it by the following) | |
1667 | * Perhaps we could add a backpointer to array of sb from tcon | |
1668 | * or if we change to make all sb to same share the same | |
1669 | * sb as NFS - then we only have one backpointer to sb. | |
1670 | * What if we wanted to mount the server share twice once with | |
1671 | * and once without posixacls or posix paths? */ | |
1672 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
50c2f753 | 1673 | |
c18c842b SF |
1674 | if (vol_info && vol_info->no_linux_ext) { |
1675 | tcon->fsUnixInfo.Capability = 0; | |
1676 | tcon->unix_ext = 0; /* Unix Extensions disabled */ | |
1677 | cFYI(1, ("Linux protocol extensions disabled")); | |
1678 | return; | |
1679 | } else if (vol_info) | |
1680 | tcon->unix_ext = 1; /* Unix Extensions supported */ | |
1681 | ||
1682 | if (tcon->unix_ext == 0) { | |
1683 | cFYI(1, ("Unix extensions disabled so not set on reconnect")); | |
1684 | return; | |
1685 | } | |
50c2f753 | 1686 | |
fb8c4b14 | 1687 | if (!CIFSSMBQFSUnixInfo(xid, tcon)) { |
8af18971 | 1688 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
50c2f753 | 1689 | |
8af18971 SF |
1690 | /* check for reconnect case in which we do not |
1691 | want to change the mount behavior if we can avoid it */ | |
fb8c4b14 | 1692 | if (vol_info == NULL) { |
50c2f753 | 1693 | /* turn off POSIX ACL and PATHNAMES if not set |
8af18971 SF |
1694 | originally at mount time */ |
1695 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) | |
1696 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
1697 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) | |
1698 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; | |
8af18971 | 1699 | } |
50c2f753 | 1700 | |
8af18971 | 1701 | cap &= CIFS_UNIX_CAP_MASK; |
75865f8c | 1702 | if (vol_info && vol_info->no_psx_acl) |
8af18971 | 1703 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
75865f8c | 1704 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
fb8c4b14 SF |
1705 | cFYI(1, ("negotiated posix acl support")); |
1706 | if (sb) | |
8af18971 SF |
1707 | sb->s_flags |= MS_POSIXACL; |
1708 | } | |
1709 | ||
75865f8c | 1710 | if (vol_info && vol_info->posix_paths == 0) |
8af18971 | 1711 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
75865f8c | 1712 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
fb8c4b14 | 1713 | cFYI(1, ("negotiate posix pathnames")); |
75865f8c | 1714 | if (sb) |
50c2f753 | 1715 | CIFS_SB(sb)->mnt_cifs_flags |= |
8af18971 SF |
1716 | CIFS_MOUNT_POSIX_PATHS; |
1717 | } | |
50c2f753 | 1718 | |
984acfe1 SF |
1719 | /* We might be setting the path sep back to a different |
1720 | form if we are reconnecting and the server switched its | |
50c2f753 | 1721 | posix path capability for this share */ |
75865f8c | 1722 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
984acfe1 | 1723 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
75865f8c SF |
1724 | |
1725 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { | |
1726 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { | |
1727 | CIFS_SB(sb)->rsize = 127 * 1024; | |
1728 | #ifdef CONFIG_CIFS_DEBUG2 | |
fb8c4b14 | 1729 | cFYI(1, ("larger reads not supported by srv")); |
75865f8c SF |
1730 | #endif |
1731 | } | |
1732 | } | |
50c2f753 SF |
1733 | |
1734 | ||
1735 | cFYI(1, ("Negotiate caps 0x%x", (int)cap)); | |
8af18971 | 1736 | #ifdef CONFIG_CIFS_DEBUG2 |
75865f8c | 1737 | if (cap & CIFS_UNIX_FCNTL_CAP) |
fb8c4b14 | 1738 | cFYI(1, ("FCNTL cap")); |
75865f8c | 1739 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
fb8c4b14 | 1740 | cFYI(1, ("EXTATTR cap")); |
75865f8c | 1741 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
fb8c4b14 | 1742 | cFYI(1, ("POSIX path cap")); |
75865f8c | 1743 | if (cap & CIFS_UNIX_XATTR_CAP) |
fb8c4b14 | 1744 | cFYI(1, ("XATTR cap")); |
75865f8c | 1745 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
fb8c4b14 | 1746 | cFYI(1, ("POSIX ACL cap")); |
75865f8c | 1747 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
fb8c4b14 | 1748 | cFYI(1, ("very large read cap")); |
75865f8c | 1749 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) |
fb8c4b14 | 1750 | cFYI(1, ("very large write cap")); |
8af18971 SF |
1751 | #endif /* CIFS_DEBUG2 */ |
1752 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
fb8c4b14 | 1753 | cFYI(1, ("setting capabilities failed")); |
8af18971 SF |
1754 | } |
1755 | } | |
1756 | } | |
1757 | ||
1da177e4 LT |
1758 | int |
1759 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1760 | char *mount_data, const char *devname) | |
1761 | { | |
1762 | int rc = 0; | |
1763 | int xid; | |
1764 | int address_type = AF_INET; | |
1765 | struct socket *csocket = NULL; | |
1766 | struct sockaddr_in sin_server; | |
1767 | struct sockaddr_in6 sin_server6; | |
1768 | struct smb_vol volume_info; | |
1769 | struct cifsSesInfo *pSesInfo = NULL; | |
1770 | struct cifsSesInfo *existingCifsSes = NULL; | |
1771 | struct cifsTconInfo *tcon = NULL; | |
1772 | struct TCP_Server_Info *srvTcp = NULL; | |
1773 | ||
1774 | xid = GetXid(); | |
1775 | ||
1776 | /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ | |
50c2f753 SF |
1777 | |
1778 | memset(&volume_info, 0, sizeof(struct smb_vol)); | |
1da177e4 | 1779 | if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { |
f99d49ad JJ |
1780 | kfree(volume_info.UNC); |
1781 | kfree(volume_info.password); | |
2fe87f02 | 1782 | kfree(volume_info.prepath); |
1da177e4 LT |
1783 | FreeXid(xid); |
1784 | return -EINVAL; | |
1785 | } | |
1786 | ||
8426c39c | 1787 | if (volume_info.nullauth) { |
fb8c4b14 | 1788 | cFYI(1, ("null user")); |
8426c39c JL |
1789 | volume_info.username = NULL; |
1790 | } else if (volume_info.username) { | |
1da177e4 | 1791 | /* BB fixme parse for domain name here */ |
467a8f8d | 1792 | cFYI(1, ("Username: %s", volume_info.username)); |
1da177e4 | 1793 | } else { |
bf820679 | 1794 | cifserror("No username specified"); |
50c2f753 SF |
1795 | /* In userspace mount helper we can get user name from alternate |
1796 | locations such as env variables and files on disk */ | |
f99d49ad JJ |
1797 | kfree(volume_info.UNC); |
1798 | kfree(volume_info.password); | |
2fe87f02 | 1799 | kfree(volume_info.prepath); |
1da177e4 LT |
1800 | FreeXid(xid); |
1801 | return -EINVAL; | |
1802 | } | |
1803 | ||
1804 | if (volume_info.UNCip && volume_info.UNC) { | |
50c2f753 SF |
1805 | rc = cifs_inet_pton(AF_INET, volume_info.UNCip, |
1806 | &sin_server.sin_addr.s_addr); | |
1da177e4 | 1807 | |
fb8c4b14 | 1808 | if (rc <= 0) { |
1da177e4 | 1809 | /* not ipv4 address, try ipv6 */ |
50c2f753 SF |
1810 | rc = cifs_inet_pton(AF_INET6, volume_info.UNCip, |
1811 | &sin_server6.sin6_addr.in6_u); | |
fb8c4b14 | 1812 | if (rc > 0) |
1da177e4 LT |
1813 | address_type = AF_INET6; |
1814 | } else { | |
1815 | address_type = AF_INET; | |
1816 | } | |
50c2f753 | 1817 | |
fb8c4b14 | 1818 | if (rc <= 0) { |
1da177e4 | 1819 | /* we failed translating address */ |
f99d49ad JJ |
1820 | kfree(volume_info.UNC); |
1821 | kfree(volume_info.password); | |
2fe87f02 | 1822 | kfree(volume_info.prepath); |
1da177e4 LT |
1823 | FreeXid(xid); |
1824 | return -EINVAL; | |
1825 | } | |
1826 | ||
1827 | cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); | |
1828 | /* success */ | |
1829 | rc = 0; | |
50c2f753 SF |
1830 | } else if (volume_info.UNCip) { |
1831 | /* BB using ip addr as server name to connect to the | |
1832 | DFS root below */ | |
1833 | cERROR(1, ("Connecting to DFS root not implemented yet")); | |
f99d49ad JJ |
1834 | kfree(volume_info.UNC); |
1835 | kfree(volume_info.password); | |
2fe87f02 | 1836 | kfree(volume_info.prepath); |
1da177e4 LT |
1837 | FreeXid(xid); |
1838 | return -EINVAL; | |
1839 | } else /* which servers DFS root would we conect to */ { | |
1840 | cERROR(1, | |
50c2f753 SF |
1841 | ("CIFS mount error: No UNC path (e.g. -o " |
1842 | "unc=//192.168.1.100/public) specified")); | |
f99d49ad JJ |
1843 | kfree(volume_info.UNC); |
1844 | kfree(volume_info.password); | |
2fe87f02 | 1845 | kfree(volume_info.prepath); |
1da177e4 LT |
1846 | FreeXid(xid); |
1847 | return -EINVAL; | |
1848 | } | |
1849 | ||
1850 | /* this is needed for ASCII cp to Unicode converts */ | |
fb8c4b14 | 1851 | if (volume_info.iocharset == NULL) { |
1da177e4 LT |
1852 | cifs_sb->local_nls = load_nls_default(); |
1853 | /* load_nls_default can not return null */ | |
1854 | } else { | |
1855 | cifs_sb->local_nls = load_nls(volume_info.iocharset); | |
fb8c4b14 | 1856 | if (cifs_sb->local_nls == NULL) { |
50c2f753 SF |
1857 | cERROR(1, ("CIFS mount error: iocharset %s not found", |
1858 | volume_info.iocharset)); | |
f99d49ad JJ |
1859 | kfree(volume_info.UNC); |
1860 | kfree(volume_info.password); | |
2fe87f02 | 1861 | kfree(volume_info.prepath); |
1da177e4 LT |
1862 | FreeXid(xid); |
1863 | return -ELIBACC; | |
1864 | } | |
1865 | } | |
1866 | ||
fb8c4b14 | 1867 | if (address_type == AF_INET) |
1da177e4 LT |
1868 | existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr, |
1869 | NULL /* no ipv6 addr */, | |
1870 | volume_info.username, &srvTcp); | |
fb8c4b14 SF |
1871 | else if (address_type == AF_INET6) { |
1872 | cFYI(1, ("looking for ipv6 address")); | |
1da177e4 LT |
1873 | existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */, |
1874 | &sin_server6.sin6_addr, | |
1875 | volume_info.username, &srvTcp); | |
5858ae44 | 1876 | } else { |
f99d49ad JJ |
1877 | kfree(volume_info.UNC); |
1878 | kfree(volume_info.password); | |
2fe87f02 | 1879 | kfree(volume_info.prepath); |
1da177e4 LT |
1880 | FreeXid(xid); |
1881 | return -EINVAL; | |
1882 | } | |
1883 | ||
1da177e4 | 1884 | if (srvTcp) { |
50c2f753 | 1885 | cFYI(1, ("Existing tcp session with server found")); |
1da177e4 | 1886 | } else { /* create socket */ |
4523cc30 | 1887 | if (volume_info.port) |
1da177e4 LT |
1888 | sin_server.sin_port = htons(volume_info.port); |
1889 | else | |
1890 | sin_server.sin_port = 0; | |
5858ae44 | 1891 | if (address_type == AF_INET6) { |
fb8c4b14 | 1892 | cFYI(1, ("attempting ipv6 connect")); |
5858ae44 SF |
1893 | /* BB should we allow ipv6 on port 139? */ |
1894 | /* other OS never observed in Wild doing 139 with v6 */ | |
50c2f753 SF |
1895 | rc = ipv6_connect(&sin_server6, &csocket); |
1896 | } else | |
1897 | rc = ipv4_connect(&sin_server, &csocket, | |
a10faeb2 SF |
1898 | volume_info.source_rfc1001_name, |
1899 | volume_info.target_rfc1001_name); | |
1da177e4 | 1900 | if (rc < 0) { |
50c2f753 SF |
1901 | cERROR(1, ("Error connecting to IPv4 socket. " |
1902 | "Aborting operation")); | |
4523cc30 | 1903 | if (csocket != NULL) |
1da177e4 | 1904 | sock_release(csocket); |
f99d49ad JJ |
1905 | kfree(volume_info.UNC); |
1906 | kfree(volume_info.password); | |
2fe87f02 | 1907 | kfree(volume_info.prepath); |
1da177e4 LT |
1908 | FreeXid(xid); |
1909 | return rc; | |
1910 | } | |
1911 | ||
1912 | srvTcp = kmalloc(sizeof (struct TCP_Server_Info), GFP_KERNEL); | |
1913 | if (srvTcp == NULL) { | |
1914 | rc = -ENOMEM; | |
1915 | sock_release(csocket); | |
f99d49ad JJ |
1916 | kfree(volume_info.UNC); |
1917 | kfree(volume_info.password); | |
2fe87f02 | 1918 | kfree(volume_info.prepath); |
1da177e4 LT |
1919 | FreeXid(xid); |
1920 | return rc; | |
1921 | } else { | |
1922 | memset(srvTcp, 0, sizeof (struct TCP_Server_Info)); | |
50c2f753 SF |
1923 | memcpy(&srvTcp->addr.sockAddr, &sin_server, |
1924 | sizeof (struct sockaddr_in)); | |
1925 | atomic_set(&srvTcp->inFlight, 0); | |
1da177e4 LT |
1926 | /* BB Add code for ipv6 case too */ |
1927 | srvTcp->ssocket = csocket; | |
1928 | srvTcp->protocolType = IPV4; | |
1929 | init_waitqueue_head(&srvTcp->response_q); | |
1930 | init_waitqueue_head(&srvTcp->request_q); | |
1931 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
1932 | /* at this point we are the only ones with the pointer | |
1933 | to the struct since the kernel thread not created yet | |
1934 | so no need to spinlock this init of tcpStatus */ | |
1935 | srvTcp->tcpStatus = CifsNew; | |
1936 | init_MUTEX(&srvTcp->tcpSem); | |
aaf737ad | 1937 | srvTcp->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, srvTcp, "cifsd"); |
4523cc30 | 1938 | if ( IS_ERR(srvTcp->tsk) ) { |
aaf737ad | 1939 | rc = PTR_ERR(srvTcp->tsk); |
50c2f753 | 1940 | cERROR(1, ("error %d create cifsd thread", rc)); |
aaf737ad | 1941 | srvTcp->tsk = NULL; |
1da177e4 | 1942 | sock_release(csocket); |
f99d49ad JJ |
1943 | kfree(volume_info.UNC); |
1944 | kfree(volume_info.password); | |
2fe87f02 | 1945 | kfree(volume_info.prepath); |
1da177e4 LT |
1946 | FreeXid(xid); |
1947 | return rc; | |
f191401f SF |
1948 | } |
1949 | wait_for_completion(&cifsd_complete); | |
1950 | rc = 0; | |
50c2f753 SF |
1951 | memcpy(srvTcp->workstation_RFC1001_name, |
1952 | volume_info.source_rfc1001_name, 16); | |
1953 | memcpy(srvTcp->server_RFC1001_name, | |
1954 | volume_info.target_rfc1001_name, 16); | |
ad009ac9 | 1955 | srvTcp->sequence_number = 0; |
1da177e4 LT |
1956 | } |
1957 | } | |
1958 | ||
1959 | if (existingCifsSes) { | |
1960 | pSesInfo = existingCifsSes; | |
bf820679 | 1961 | cFYI(1, ("Existing smb sess found")); |
f99d49ad | 1962 | kfree(volume_info.password); |
1da177e4 LT |
1963 | /* volume_info.UNC freed at end of function */ |
1964 | } else if (!rc) { | |
bf820679 | 1965 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 LT |
1966 | pSesInfo = sesInfoAlloc(); |
1967 | if (pSesInfo == NULL) | |
1968 | rc = -ENOMEM; | |
1969 | else { | |
1970 | pSesInfo->server = srvTcp; | |
1971 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
1972 | NIPQUAD(sin_server.sin_addr.s_addr)); | |
1973 | } | |
1974 | ||
50c2f753 SF |
1975 | if (!rc) { |
1976 | /* volume_info.password freed at unmount */ | |
1da177e4 LT |
1977 | if (volume_info.password) |
1978 | pSesInfo->password = volume_info.password; | |
1979 | if (volume_info.username) | |
1980 | strncpy(pSesInfo->userName, | |
50c2f753 SF |
1981 | volume_info.username, |
1982 | MAX_USERNAME_SIZE); | |
3979877e SF |
1983 | if (volume_info.domainname) { |
1984 | int len = strlen(volume_info.domainname); | |
50c2f753 | 1985 | pSesInfo->domainName = |
3979877e | 1986 | kmalloc(len + 1, GFP_KERNEL); |
4523cc30 | 1987 | if (pSesInfo->domainName) |
3979877e SF |
1988 | strcpy(pSesInfo->domainName, |
1989 | volume_info.domainname); | |
1990 | } | |
1da177e4 | 1991 | pSesInfo->linux_uid = volume_info.linux_uid; |
750d1151 | 1992 | pSesInfo->overrideSecFlg = volume_info.secFlg; |
1da177e4 | 1993 | down(&pSesInfo->sesSem); |
189acaae | 1994 | /* BB FIXME need to pass vol->secFlgs BB */ |
50c2f753 SF |
1995 | rc = cifs_setup_session(xid, pSesInfo, |
1996 | cifs_sb->local_nls); | |
1da177e4 | 1997 | up(&pSesInfo->sesSem); |
4523cc30 | 1998 | if (!rc) |
1da177e4 LT |
1999 | atomic_inc(&srvTcp->socketUseCount); |
2000 | } else | |
f99d49ad | 2001 | kfree(volume_info.password); |
1da177e4 | 2002 | } |
50c2f753 | 2003 | |
1da177e4 LT |
2004 | /* search for existing tcon to this server share */ |
2005 | if (!rc) { | |
4523cc30 | 2006 | if (volume_info.rsize > CIFSMaxBufSize) { |
50c2f753 | 2007 | cERROR(1, ("rsize %d too large, using MaxBufSize", |
0ae0efad SF |
2008 | volume_info.rsize)); |
2009 | cifs_sb->rsize = CIFSMaxBufSize; | |
75865f8c SF |
2010 | } else if ((volume_info.rsize) && |
2011 | (volume_info.rsize <= CIFSMaxBufSize)) | |
1da177e4 | 2012 | cifs_sb->rsize = volume_info.rsize; |
0ae0efad SF |
2013 | else /* default */ |
2014 | cifs_sb->rsize = CIFSMaxBufSize; | |
2015 | ||
4523cc30 | 2016 | if (volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { |
50c2f753 | 2017 | cERROR(1, ("wsize %d too large, using 4096 instead", |
0ae0efad SF |
2018 | volume_info.wsize)); |
2019 | cifs_sb->wsize = 4096; | |
4523cc30 | 2020 | } else if (volume_info.wsize) |
1da177e4 LT |
2021 | cifs_sb->wsize = volume_info.wsize; |
2022 | else | |
50c2f753 | 2023 | cifs_sb->wsize = |
1877c9ea SF |
2024 | min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE, |
2025 | 127*1024); | |
17cbbafe | 2026 | /* old default of CIFSMaxBufSize was too small now |
50c2f753 | 2027 | that SMB Write2 can send multiple pages in kvec. |
17cbbafe SF |
2028 | RFC1001 does not describe what happens when frame |
2029 | bigger than 128K is sent so use that as max in | |
2030 | conjunction with 52K kvec constraint on arch with 4K | |
2031 | page size */ | |
2032 | ||
4523cc30 | 2033 | if (cifs_sb->rsize < 2048) { |
50c2f753 | 2034 | cifs_sb->rsize = 2048; |
6cec2aed | 2035 | /* Windows ME may prefer this */ |
467a8f8d | 2036 | cFYI(1, ("readsize set to minimum: 2048")); |
1da177e4 | 2037 | } |
2fe87f02 SF |
2038 | /* calculate prepath */ |
2039 | cifs_sb->prepath = volume_info.prepath; | |
4523cc30 | 2040 | if (cifs_sb->prepath) { |
2fe87f02 SF |
2041 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); |
2042 | cifs_sb->prepath[0] = CIFS_DIR_SEP(cifs_sb); | |
2043 | volume_info.prepath = NULL; | |
50c2f753 | 2044 | } else |
2fe87f02 | 2045 | cifs_sb->prepathlen = 0; |
1da177e4 LT |
2046 | cifs_sb->mnt_uid = volume_info.linux_uid; |
2047 | cifs_sb->mnt_gid = volume_info.linux_gid; | |
2048 | cifs_sb->mnt_file_mode = volume_info.file_mode; | |
2049 | cifs_sb->mnt_dir_mode = volume_info.dir_mode; | |
467a8f8d SF |
2050 | cFYI(1, ("file mode: 0x%x dir mode: 0x%x", |
2051 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode)); | |
1da177e4 | 2052 | |
4523cc30 | 2053 | if (volume_info.noperm) |
1da177e4 | 2054 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; |
4523cc30 | 2055 | if (volume_info.setuids) |
1da177e4 | 2056 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; |
4523cc30 | 2057 | if (volume_info.server_ino) |
1da177e4 | 2058 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; |
4523cc30 | 2059 | if (volume_info.remap) |
6a0b4824 | 2060 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; |
4523cc30 | 2061 | if (volume_info.no_xattr) |
1da177e4 | 2062 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; |
4523cc30 | 2063 | if (volume_info.sfu_emul) |
d7245c2c | 2064 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; |
4523cc30 | 2065 | if (volume_info.nobrl) |
c46fa8ac | 2066 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; |
4523cc30 | 2067 | if (volume_info.cifs_acl) |
0a4b92c0 | 2068 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; |
4523cc30 SF |
2069 | if (volume_info.override_uid) |
2070 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; | |
2071 | if (volume_info.override_gid) | |
2072 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; | |
2073 | if (volume_info.direct_io) { | |
467a8f8d | 2074 | cFYI(1, ("mounting share using direct i/o")); |
1da177e4 LT |
2075 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
2076 | } | |
2077 | ||
2078 | tcon = | |
2079 | find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, | |
2080 | volume_info.username); | |
2081 | if (tcon) { | |
bf820679 | 2082 | cFYI(1, ("Found match on UNC path")); |
1da177e4 LT |
2083 | /* we can have only one retry value for a connection |
2084 | to a share so for resources mounted more than once | |
50c2f753 | 2085 | to the same server share the last value passed in |
1da177e4 LT |
2086 | for the retry flag is used */ |
2087 | tcon->retry = volume_info.retry; | |
d3485d37 | 2088 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
2089 | } else { |
2090 | tcon = tconInfoAlloc(); | |
2091 | if (tcon == NULL) | |
2092 | rc = -ENOMEM; | |
2093 | else { | |
50c2f753 | 2094 | /* check for null share name ie connecting to |
8af18971 | 2095 | * dfs root */ |
1da177e4 | 2096 | |
50c2f753 | 2097 | /* BB check if this works for exactly length |
8af18971 | 2098 | * three strings */ |
1da177e4 LT |
2099 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) |
2100 | && (strchr(volume_info.UNC + 3, '/') == | |
2101 | NULL)) { | |
737b758c | 2102 | rc = connect_to_dfs_path(xid, pSesInfo, |
8af18971 | 2103 | "", cifs_sb->local_nls, |
50c2f753 | 2104 | cifs_sb->mnt_cifs_flags & |
8af18971 | 2105 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
f99d49ad | 2106 | kfree(volume_info.UNC); |
1da177e4 LT |
2107 | FreeXid(xid); |
2108 | return -ENODEV; | |
2109 | } else { | |
8af18971 SF |
2110 | /* BB Do we need to wrap sesSem around |
2111 | * this TCon call and Unix SetFS as | |
2112 | * we do on SessSetup and reconnect? */ | |
50c2f753 | 2113 | rc = CIFSTCon(xid, pSesInfo, |
1da177e4 LT |
2114 | volume_info.UNC, |
2115 | tcon, cifs_sb->local_nls); | |
2116 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
2117 | } | |
2118 | if (!rc) { | |
2119 | atomic_inc(&pSesInfo->inUse); | |
2120 | tcon->retry = volume_info.retry; | |
d3485d37 | 2121 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
2122 | } |
2123 | } | |
2124 | } | |
2125 | } | |
4523cc30 | 2126 | if (pSesInfo) { |
1da177e4 LT |
2127 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
2128 | sb->s_maxbytes = (u64) 1 << 63; | |
2129 | } else | |
2130 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
2131 | } | |
2132 | ||
8af18971 | 2133 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
1da177e4 LT |
2134 | sb->s_time_gran = 100; |
2135 | ||
2136 | /* on error free sesinfo and tcon struct if needed */ | |
2137 | if (rc) { | |
2138 | /* if session setup failed, use count is zero but | |
2139 | we still need to free cifsd thread */ | |
4523cc30 | 2140 | if (atomic_read(&srvTcp->socketUseCount) == 0) { |
1da177e4 LT |
2141 | spin_lock(&GlobalMid_Lock); |
2142 | srvTcp->tcpStatus = CifsExiting; | |
2143 | spin_unlock(&GlobalMid_Lock); | |
4523cc30 | 2144 | if (srvTcp->tsk) { |
28356a16 SF |
2145 | struct task_struct *tsk; |
2146 | /* If we could verify that kthread_stop would | |
2147 | always wake up processes blocked in | |
2148 | tcp in recv_mesg then we could remove the | |
2149 | send_sig call */ | |
50c2f753 | 2150 | force_sig(SIGKILL, srvTcp->tsk); |
28356a16 | 2151 | tsk = srvTcp->tsk; |
fb8c4b14 | 2152 | if (tsk) |
f7f7c31c | 2153 | kthread_stop(tsk); |
f191401f | 2154 | } |
1da177e4 LT |
2155 | } |
2156 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
2157 | if (tcon) /* up accidently freeing someone elses tcon struct */ | |
2158 | tconInfoFree(tcon); | |
2159 | if (existingCifsSes == NULL) { | |
2160 | if (pSesInfo) { | |
50c2f753 | 2161 | if ((pSesInfo->server) && |
1da177e4 LT |
2162 | (pSesInfo->status == CifsGood)) { |
2163 | int temp_rc; | |
2164 | temp_rc = CIFSSMBLogoff(xid, pSesInfo); | |
2165 | /* if the socketUseCount is now zero */ | |
4523cc30 | 2166 | if ((temp_rc == -ESHUTDOWN) && |
50c2f753 | 2167 | (pSesInfo->server) && |
5d9c7206 | 2168 | (pSesInfo->server->tsk)) { |
28356a16 | 2169 | struct task_struct *tsk; |
5d9c7206 JL |
2170 | force_sig(SIGKILL, |
2171 | pSesInfo->server->tsk); | |
28356a16 | 2172 | tsk = pSesInfo->server->tsk; |
f7f7c31c | 2173 | if (tsk) |
28356a16 | 2174 | kthread_stop(tsk); |
f191401f | 2175 | } |
1da177e4 LT |
2176 | } else |
2177 | cFYI(1, ("No session or bad tcon")); | |
2178 | sesInfoFree(pSesInfo); | |
2179 | /* pSesInfo = NULL; */ | |
2180 | } | |
2181 | } | |
2182 | } else { | |
2183 | atomic_inc(&tcon->useCount); | |
2184 | cifs_sb->tcon = tcon; | |
2185 | tcon->ses = pSesInfo; | |
2186 | ||
82940a46 | 2187 | /* do not care if following two calls succeed - informational */ |
737b758c SF |
2188 | CIFSSMBQFSDeviceInfo(xid, tcon); |
2189 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
50c2f753 | 2190 | |
8af18971 SF |
2191 | /* tell server which Unix caps we support */ |
2192 | if (tcon->ses->capabilities & CAP_UNIX) | |
c18c842b SF |
2193 | /* reset of caps checks mount to see if unix extensions |
2194 | disabled for just this mount */ | |
8af18971 | 2195 | reset_cifs_unix_caps(xid, tcon, sb, &volume_info); |
c18c842b SF |
2196 | else |
2197 | tcon->unix_ext = 0; /* server does not support them */ | |
2198 | ||
2199 | if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) { | |
75865f8c SF |
2200 | cifs_sb->rsize = 1024 * 127; |
2201 | #ifdef CONFIG_CIFS_DEBUG2 | |
c18c842b | 2202 | cFYI(1, ("no very large read support, rsize now 127K")); |
75865f8c | 2203 | #endif |
75865f8c | 2204 | } |
3e84469d SF |
2205 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
2206 | cifs_sb->wsize = min(cifs_sb->wsize, | |
2207 | (tcon->ses->server->maxBuf - | |
2208 | MAX_CIFS_HDR_SIZE)); | |
0ae0efad | 2209 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
50c2f753 SF |
2210 | cifs_sb->rsize = min(cifs_sb->rsize, |
2211 | (tcon->ses->server->maxBuf - | |
2212 | MAX_CIFS_HDR_SIZE)); | |
1da177e4 LT |
2213 | } |
2214 | ||
2215 | /* volume_info.password is freed above when existing session found | |
2216 | (in which case it is not needed anymore) but when new sesion is created | |
2217 | the password ptr is put in the new session structure (in which case the | |
2218 | password will be freed at unmount time) */ | |
f99d49ad | 2219 | kfree(volume_info.UNC); |
2fe87f02 | 2220 | kfree(volume_info.prepath); |
1da177e4 LT |
2221 | FreeXid(xid); |
2222 | return rc; | |
2223 | } | |
2224 | ||
2225 | static int | |
2226 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 2227 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
2228 | const struct nls_table *nls_codepage) |
2229 | { | |
2230 | struct smb_hdr *smb_buffer; | |
2231 | struct smb_hdr *smb_buffer_response; | |
2232 | SESSION_SETUP_ANDX *pSMB; | |
2233 | SESSION_SETUP_ANDX *pSMBr; | |
2234 | char *bcc_ptr; | |
2235 | char *user; | |
2236 | char *domain; | |
2237 | int rc = 0; | |
2238 | int remaining_words = 0; | |
2239 | int bytes_returned = 0; | |
2240 | int len; | |
2241 | __u32 capabilities; | |
2242 | __u16 count; | |
2243 | ||
eeac8047 | 2244 | cFYI(1, ("In sesssetup")); |
4523cc30 | 2245 | if (ses == NULL) |
1da177e4 LT |
2246 | return -EINVAL; |
2247 | user = ses->userName; | |
2248 | domain = ses->domainName; | |
2249 | smb_buffer = cifs_buf_get(); | |
2250 | if (smb_buffer == NULL) { | |
2251 | return -ENOMEM; | |
2252 | } | |
2253 | smb_buffer_response = smb_buffer; | |
2254 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2255 | ||
2256 | /* send SMBsessionSetup here */ | |
2257 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2258 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2259 | ||
1982c344 | 2260 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2261 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2262 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2263 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2264 | ||
50c2f753 SF |
2265 | if (ses->server->secMode & |
2266 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
2267 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2268 | ||
2269 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2270 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2271 | if (ses->capabilities & CAP_UNICODE) { | |
2272 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2273 | capabilities |= CAP_UNICODE; | |
2274 | } | |
2275 | if (ses->capabilities & CAP_STATUS32) { | |
2276 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2277 | capabilities |= CAP_STATUS32; | |
2278 | } | |
2279 | if (ses->capabilities & CAP_DFS) { | |
2280 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2281 | capabilities |= CAP_DFS; | |
2282 | } | |
2283 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2284 | ||
50c2f753 | 2285 | pSMB->req_no_secext.CaseInsensitivePasswordLength = |
7c7b25bc | 2286 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2287 | |
2288 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2289 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2290 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2291 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2292 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2293 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2294 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2295 | |
2296 | if (ses->capabilities & CAP_UNICODE) { | |
2297 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2298 | *bcc_ptr = 0; | |
2299 | bcc_ptr++; | |
2300 | } | |
4523cc30 | 2301 | if (user == NULL) |
3979877e | 2302 | bytes_returned = 0; /* skip null user */ |
50c2f753 | 2303 | else |
1da177e4 | 2304 | bytes_returned = |
50c2f753 | 2305 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2306 | nls_codepage); |
2307 | /* convert number of 16 bit words to bytes */ | |
2308 | bcc_ptr += 2 * bytes_returned; | |
2309 | bcc_ptr += 2; /* trailing null */ | |
2310 | if (domain == NULL) | |
2311 | bytes_returned = | |
e89dc920 | 2312 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2313 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2314 | else | |
2315 | bytes_returned = | |
e89dc920 | 2316 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2317 | nls_codepage); |
2318 | bcc_ptr += 2 * bytes_returned; | |
2319 | bcc_ptr += 2; | |
2320 | bytes_returned = | |
e89dc920 | 2321 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2322 | 32, nls_codepage); |
2323 | bcc_ptr += 2 * bytes_returned; | |
2324 | bytes_returned = | |
e9ff3990 | 2325 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, |
1da177e4 LT |
2326 | 32, nls_codepage); |
2327 | bcc_ptr += 2 * bytes_returned; | |
2328 | bcc_ptr += 2; | |
2329 | bytes_returned = | |
e89dc920 | 2330 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2331 | 64, nls_codepage); |
2332 | bcc_ptr += 2 * bytes_returned; | |
2333 | bcc_ptr += 2; | |
2334 | } else { | |
50c2f753 | 2335 | if (user != NULL) { |
1da177e4 LT |
2336 | strncpy(bcc_ptr, user, 200); |
2337 | bcc_ptr += strnlen(user, 200); | |
2338 | } | |
2339 | *bcc_ptr = 0; | |
2340 | bcc_ptr++; | |
2341 | if (domain == NULL) { | |
2342 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2343 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2344 | } else { | |
2345 | strncpy(bcc_ptr, domain, 64); | |
2346 | bcc_ptr += strnlen(domain, 64); | |
2347 | *bcc_ptr = 0; | |
2348 | bcc_ptr++; | |
2349 | } | |
2350 | strcpy(bcc_ptr, "Linux version "); | |
2351 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2352 | strcpy(bcc_ptr, utsname()->release); |
2353 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2354 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2355 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2356 | } | |
2357 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2358 | smb_buffer->smb_buf_length += count; | |
2359 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2360 | ||
2361 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2362 | &bytes_returned, 1); | |
2363 | if (rc) { | |
2364 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2365 | } else if ((smb_buffer_response->WordCount == 3) | |
2366 | || (smb_buffer_response->WordCount == 4)) { | |
2367 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2368 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2369 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2370 | cFYI(1, (" Guest login")); /* BB mark SesInfo struct? */ |
2371 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format | |
2372 | (little endian) */ | |
1da177e4 | 2373 | cFYI(1, ("UID = %d ", ses->Suid)); |
50c2f753 SF |
2374 | /* response can have either 3 or 4 word count - Samba sends 3 */ |
2375 | bcc_ptr = pByteArea(smb_buffer_response); | |
1da177e4 LT |
2376 | if ((pSMBr->resp.hdr.WordCount == 3) |
2377 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2378 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2379 | if (pSMBr->resp.hdr.WordCount == 4) | |
2380 | bcc_ptr += blob_len; | |
2381 | ||
2382 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2383 | if ((long) (bcc_ptr) % 2) { | |
2384 | remaining_words = | |
50c2f753 SF |
2385 | (BCC(smb_buffer_response) - 1) / 2; |
2386 | /* Unicode strings must be word | |
2387 | aligned */ | |
2388 | bcc_ptr++; | |
1da177e4 LT |
2389 | } else { |
2390 | remaining_words = | |
2391 | BCC(smb_buffer_response) / 2; | |
2392 | } | |
2393 | len = | |
2394 | UniStrnlen((wchar_t *) bcc_ptr, | |
2395 | remaining_words - 1); | |
2396 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2397 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2398 | terminating last Unicode string in response */ | |
fb8c4b14 | 2399 | if (ses->serverOS) |
a424f8bf | 2400 | kfree(ses->serverOS); |
50c2f753 SF |
2401 | ses->serverOS = kzalloc(2 * (len + 1), |
2402 | GFP_KERNEL); | |
fb8c4b14 | 2403 | if (ses->serverOS == NULL) |
433dc24f | 2404 | goto sesssetup_nomem; |
1da177e4 | 2405 | cifs_strfromUCS_le(ses->serverOS, |
50c2f753 SF |
2406 | (__le16 *)bcc_ptr, |
2407 | len, nls_codepage); | |
1da177e4 LT |
2408 | bcc_ptr += 2 * (len + 1); |
2409 | remaining_words -= len + 1; | |
2410 | ses->serverOS[2 * len] = 0; | |
2411 | ses->serverOS[1 + (2 * len)] = 0; | |
2412 | if (remaining_words > 0) { | |
2413 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2414 | remaining_words-1); | |
cd49b492 | 2415 | kfree(ses->serverNOS); |
50c2f753 SF |
2416 | ses->serverNOS = kzalloc(2 * (len + 1), |
2417 | GFP_KERNEL); | |
fb8c4b14 | 2418 | if (ses->serverNOS == NULL) |
433dc24f | 2419 | goto sesssetup_nomem; |
1da177e4 | 2420 | cifs_strfromUCS_le(ses->serverNOS, |
50c2f753 SF |
2421 | (__le16 *)bcc_ptr, |
2422 | len, nls_codepage); | |
1da177e4 LT |
2423 | bcc_ptr += 2 * (len + 1); |
2424 | ses->serverNOS[2 * len] = 0; | |
2425 | ses->serverNOS[1 + (2 * len)] = 0; | |
fb8c4b14 | 2426 | if (strncmp(ses->serverNOS, |
50c2f753 | 2427 | "NT LAN Manager 4", 16) == 0) { |
467a8f8d | 2428 | cFYI(1, ("NT4 server")); |
1da177e4 LT |
2429 | ses->flags |= CIFS_SES_NT4; |
2430 | } | |
2431 | remaining_words -= len + 1; | |
2432 | if (remaining_words > 0) { | |
433dc24f | 2433 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
50c2f753 SF |
2434 | /* last string is not always null terminated |
2435 | (for e.g. for Windows XP & 2000) */ | |
fb8c4b14 | 2436 | if (ses->serverDomain) |
a424f8bf | 2437 | kfree(ses->serverDomain); |
1da177e4 | 2438 | ses->serverDomain = |
50c2f753 SF |
2439 | kzalloc(2*(len+1), |
2440 | GFP_KERNEL); | |
fb8c4b14 | 2441 | if (ses->serverDomain == NULL) |
433dc24f | 2442 | goto sesssetup_nomem; |
1da177e4 | 2443 | cifs_strfromUCS_le(ses->serverDomain, |
50c2f753 SF |
2444 | (__le16 *)bcc_ptr, |
2445 | len, nls_codepage); | |
1da177e4 LT |
2446 | bcc_ptr += 2 * (len + 1); |
2447 | ses->serverDomain[2*len] = 0; | |
2448 | ses->serverDomain[1+(2*len)] = 0; | |
50c2f753 SF |
2449 | } else { /* else no more room so create |
2450 | dummy domain string */ | |
fb8c4b14 | 2451 | if (ses->serverDomain) |
a424f8bf | 2452 | kfree(ses->serverDomain); |
50c2f753 | 2453 | ses->serverDomain = |
e915fc49 | 2454 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2455 | } |
50c2f753 SF |
2456 | } else { /* no room so create dummy domain |
2457 | and NOS string */ | |
2458 | ||
433dc24f SF |
2459 | /* if these kcallocs fail not much we |
2460 | can do, but better to not fail the | |
2461 | sesssetup itself */ | |
cd49b492 | 2462 | kfree(ses->serverDomain); |
1da177e4 | 2463 | ses->serverDomain = |
e915fc49 | 2464 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2465 | kfree(ses->serverNOS); |
1da177e4 | 2466 | ses->serverNOS = |
e915fc49 | 2467 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2468 | } |
2469 | } else { /* ASCII */ | |
2470 | len = strnlen(bcc_ptr, 1024); | |
2471 | if (((long) bcc_ptr + len) - (long) | |
2472 | pByteArea(smb_buffer_response) | |
2473 | <= BCC(smb_buffer_response)) { | |
cd49b492 | 2474 | kfree(ses->serverOS); |
50c2f753 SF |
2475 | ses->serverOS = kzalloc(len + 1, |
2476 | GFP_KERNEL); | |
fb8c4b14 | 2477 | if (ses->serverOS == NULL) |
433dc24f | 2478 | goto sesssetup_nomem; |
50c2f753 | 2479 | strncpy(ses->serverOS, bcc_ptr, len); |
1da177e4 LT |
2480 | |
2481 | bcc_ptr += len; | |
50c2f753 SF |
2482 | /* null terminate the string */ |
2483 | bcc_ptr[0] = 0; | |
1da177e4 LT |
2484 | bcc_ptr++; |
2485 | ||
2486 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2487 | kfree(ses->serverNOS); |
50c2f753 SF |
2488 | ses->serverNOS = kzalloc(len + 1, |
2489 | GFP_KERNEL); | |
fb8c4b14 | 2490 | if (ses->serverNOS == NULL) |
433dc24f | 2491 | goto sesssetup_nomem; |
1da177e4 LT |
2492 | strncpy(ses->serverNOS, bcc_ptr, len); |
2493 | bcc_ptr += len; | |
2494 | bcc_ptr[0] = 0; | |
2495 | bcc_ptr++; | |
2496 | ||
2497 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 2498 | if (ses->serverDomain) |
a424f8bf | 2499 | kfree(ses->serverDomain); |
50c2f753 SF |
2500 | ses->serverDomain = kzalloc(len + 1, |
2501 | GFP_KERNEL); | |
fb8c4b14 | 2502 | if (ses->serverDomain == NULL) |
433dc24f | 2503 | goto sesssetup_nomem; |
50c2f753 SF |
2504 | strncpy(ses->serverDomain, bcc_ptr, |
2505 | len); | |
1da177e4 LT |
2506 | bcc_ptr += len; |
2507 | bcc_ptr[0] = 0; | |
2508 | bcc_ptr++; | |
2509 | } else | |
2510 | cFYI(1, | |
50c2f753 SF |
2511 | ("Variable field of length %d " |
2512 | "extends beyond end of smb ", | |
1da177e4 LT |
2513 | len)); |
2514 | } | |
2515 | } else { | |
2516 | cERROR(1, | |
50c2f753 SF |
2517 | (" Security Blob Length extends beyond " |
2518 | "end of SMB")); | |
1da177e4 LT |
2519 | } |
2520 | } else { | |
2521 | cERROR(1, | |
2522 | (" Invalid Word count %d: ", | |
2523 | smb_buffer_response->WordCount)); | |
2524 | rc = -EIO; | |
2525 | } | |
433dc24f SF |
2526 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2527 | since that could make reconnection harder, and | |
2528 | reconnection might be needed to free memory */ | |
1da177e4 LT |
2529 | if (smb_buffer) |
2530 | cifs_buf_release(smb_buffer); | |
2531 | ||
2532 | return rc; | |
2533 | } | |
2534 | ||
1da177e4 LT |
2535 | static int |
2536 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
50c2f753 | 2537 | struct cifsSesInfo *ses, int *pNTLMv2_flag, |
1da177e4 LT |
2538 | const struct nls_table *nls_codepage) |
2539 | { | |
2540 | struct smb_hdr *smb_buffer; | |
2541 | struct smb_hdr *smb_buffer_response; | |
2542 | SESSION_SETUP_ANDX *pSMB; | |
2543 | SESSION_SETUP_ANDX *pSMBr; | |
2544 | char *bcc_ptr; | |
2545 | char *domain; | |
2546 | int rc = 0; | |
2547 | int remaining_words = 0; | |
2548 | int bytes_returned = 0; | |
2549 | int len; | |
2550 | int SecurityBlobLength = sizeof (NEGOTIATE_MESSAGE); | |
2551 | PNEGOTIATE_MESSAGE SecurityBlob; | |
2552 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2553 | __u32 negotiate_flags, capabilities; | |
2554 | __u16 count; | |
2555 | ||
12b3b8ff | 2556 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
fb8c4b14 | 2557 | if (ses == NULL) |
1da177e4 LT |
2558 | return -EINVAL; |
2559 | domain = ses->domainName; | |
2560 | *pNTLMv2_flag = FALSE; | |
2561 | smb_buffer = cifs_buf_get(); | |
2562 | if (smb_buffer == NULL) { | |
2563 | return -ENOMEM; | |
2564 | } | |
2565 | smb_buffer_response = smb_buffer; | |
2566 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2567 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2568 | ||
2569 | /* send SMBsessionSetup here */ | |
2570 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2571 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2572 | |
2573 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2574 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2575 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2576 | ||
2577 | pSMB->req.AndXCommand = 0xFF; | |
2578 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2579 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2580 | ||
fb8c4b14 | 2581 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2582 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2583 | ||
2584 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2585 | CAP_EXTENDED_SECURITY; | |
2586 | if (ses->capabilities & CAP_UNICODE) { | |
2587 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2588 | capabilities |= CAP_UNICODE; | |
2589 | } | |
2590 | if (ses->capabilities & CAP_STATUS32) { | |
2591 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2592 | capabilities |= CAP_STATUS32; | |
2593 | } | |
2594 | if (ses->capabilities & CAP_DFS) { | |
2595 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2596 | capabilities |= CAP_DFS; | |
2597 | } | |
2598 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2599 | ||
2600 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2601 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2602 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2603 | SecurityBlob->MessageType = NtLmNegotiate; | |
2604 | negotiate_flags = | |
2605 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2606 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2607 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 | 2608 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
fb8c4b14 | 2609 | if (sign_CIFS_PDUs) |
1da177e4 | 2610 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 2611 | /* if (ntlmv2_support) |
3979877e | 2612 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ |
1da177e4 LT |
2613 | /* setup pointers to domain name and workstation name */ |
2614 | bcc_ptr += SecurityBlobLength; | |
2615 | ||
2616 | SecurityBlob->WorkstationName.Buffer = 0; | |
2617 | SecurityBlob->WorkstationName.Length = 0; | |
2618 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2619 | ||
12b3b8ff SF |
2620 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2621 | along with username on auth request (ie the response to challenge) */ | |
2622 | SecurityBlob->DomainName.Buffer = 0; | |
2623 | SecurityBlob->DomainName.Length = 0; | |
2624 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2625 | if (ses->capabilities & CAP_UNICODE) { |
2626 | if ((long) bcc_ptr % 2) { | |
2627 | *bcc_ptr = 0; | |
2628 | bcc_ptr++; | |
2629 | } | |
2630 | ||
2631 | bytes_returned = | |
e89dc920 | 2632 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2633 | 32, nls_codepage); |
2634 | bcc_ptr += 2 * bytes_returned; | |
2635 | bytes_returned = | |
e9ff3990 | 2636 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2637 | nls_codepage); |
2638 | bcc_ptr += 2 * bytes_returned; | |
2639 | bcc_ptr += 2; /* null terminate Linux version */ | |
2640 | bytes_returned = | |
e89dc920 | 2641 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2642 | 64, nls_codepage); |
2643 | bcc_ptr += 2 * bytes_returned; | |
2644 | *(bcc_ptr + 1) = 0; | |
2645 | *(bcc_ptr + 2) = 0; | |
2646 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2647 | *(bcc_ptr + 1) = 0; | |
2648 | *(bcc_ptr + 2) = 0; | |
2649 | bcc_ptr += 2; /* null domain */ | |
2650 | } else { /* ASCII */ | |
2651 | strcpy(bcc_ptr, "Linux version "); | |
2652 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2653 | strcpy(bcc_ptr, utsname()->release); |
2654 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2655 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2656 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2657 | bcc_ptr++; /* empty domain field */ | |
2658 | *bcc_ptr = 0; | |
2659 | } | |
2660 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2661 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2662 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2663 | smb_buffer->smb_buf_length += count; | |
2664 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2665 | ||
2666 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2667 | &bytes_returned, 1); | |
2668 | ||
2669 | if (smb_buffer_response->Status.CifsError == | |
2670 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2671 | rc = 0; | |
2672 | ||
2673 | if (rc) { | |
2674 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2675 | } else if ((smb_buffer_response->WordCount == 3) | |
2676 | || (smb_buffer_response->WordCount == 4)) { | |
2677 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2678 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2679 | ||
2680 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2681 | cFYI(1, (" Guest login")); |
2682 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
1da177e4 | 2683 | |
50c2f753 SF |
2684 | bcc_ptr = pByteArea(smb_buffer_response); |
2685 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
2686 | |
2687 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2688 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2689 | cFYI(1, | |
2690 | ("Unexpected NTLMSSP message type received %d", | |
2691 | SecurityBlob2->MessageType)); | |
2692 | } else if (ses) { | |
50c2f753 | 2693 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ |
12b3b8ff | 2694 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2695 | if ((pSMBr->resp.hdr.WordCount == 3) |
2696 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2697 | && (blob_len < | |
2698 | pSMBr->resp.ByteCount))) { | |
2699 | ||
2700 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2701 | bcc_ptr += blob_len; | |
12b3b8ff | 2702 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2703 | blob_len)); |
2704 | } | |
2705 | ||
12b3b8ff | 2706 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2707 | |
2708 | memcpy(ses->server->cryptKey, | |
2709 | SecurityBlob2->Challenge, | |
2710 | CIFS_CRYPTO_KEY_SIZE); | |
50c2f753 | 2711 | if (SecurityBlob2->NegotiateFlags & |
12b3b8ff | 2712 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) |
1da177e4 LT |
2713 | *pNTLMv2_flag = TRUE; |
2714 | ||
50c2f753 SF |
2715 | if ((SecurityBlob2->NegotiateFlags & |
2716 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
1da177e4 | 2717 | || (sign_CIFS_PDUs > 1)) |
50c2f753 SF |
2718 | ses->server->secMode |= |
2719 | SECMODE_SIGN_REQUIRED; | |
2720 | if ((SecurityBlob2->NegotiateFlags & | |
1da177e4 | 2721 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) |
50c2f753 | 2722 | ses->server->secMode |= |
1da177e4 LT |
2723 | SECMODE_SIGN_ENABLED; |
2724 | ||
2725 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2726 | if ((long) (bcc_ptr) % 2) { | |
2727 | remaining_words = | |
2728 | (BCC(smb_buffer_response) | |
2729 | - 1) / 2; | |
50c2f753 SF |
2730 | /* Must word align unicode strings */ |
2731 | bcc_ptr++; | |
1da177e4 LT |
2732 | } else { |
2733 | remaining_words = | |
2734 | BCC | |
2735 | (smb_buffer_response) / 2; | |
2736 | } | |
2737 | len = | |
2738 | UniStrnlen((wchar_t *) bcc_ptr, | |
2739 | remaining_words - 1); | |
2740 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2741 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2742 | terminating last Unicode string in response */ | |
fb8c4b14 | 2743 | if (ses->serverOS) |
a424f8bf | 2744 | kfree(ses->serverOS); |
1da177e4 | 2745 | ses->serverOS = |
e915fc49 | 2746 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2747 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2748 | (__le16 *) |
1da177e4 LT |
2749 | bcc_ptr, len, |
2750 | nls_codepage); | |
2751 | bcc_ptr += 2 * (len + 1); | |
2752 | remaining_words -= len + 1; | |
2753 | ses->serverOS[2 * len] = 0; | |
2754 | ses->serverOS[1 + (2 * len)] = 0; | |
2755 | if (remaining_words > 0) { | |
2756 | len = UniStrnlen((wchar_t *) | |
2757 | bcc_ptr, | |
2758 | remaining_words | |
2759 | - 1); | |
cd49b492 | 2760 | kfree(ses->serverNOS); |
1da177e4 | 2761 | ses->serverNOS = |
e915fc49 | 2762 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2763 | GFP_KERNEL); |
2764 | cifs_strfromUCS_le(ses-> | |
2765 | serverNOS, | |
e89dc920 | 2766 | (__le16 *) |
1da177e4 LT |
2767 | bcc_ptr, |
2768 | len, | |
2769 | nls_codepage); | |
2770 | bcc_ptr += 2 * (len + 1); | |
2771 | ses->serverNOS[2 * len] = 0; | |
2772 | ses->serverNOS[1 + | |
2773 | (2 * len)] = 0; | |
2774 | remaining_words -= len + 1; | |
2775 | if (remaining_words > 0) { | |
50c2f753 SF |
2776 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
2777 | /* last string not always null terminated | |
2778 | (for e.g. for Windows XP & 2000) */ | |
cd49b492 | 2779 | kfree(ses->serverDomain); |
1da177e4 | 2780 | ses->serverDomain = |
e915fc49 | 2781 | kzalloc(2 * |
1da177e4 LT |
2782 | (len + |
2783 | 1), | |
2784 | GFP_KERNEL); | |
2785 | cifs_strfromUCS_le | |
e89dc920 SF |
2786 | (ses->serverDomain, |
2787 | (__le16 *)bcc_ptr, | |
2788 | len, nls_codepage); | |
1da177e4 LT |
2789 | bcc_ptr += |
2790 | 2 * (len + 1); | |
e89dc920 | 2791 | ses->serverDomain[2*len] |
1da177e4 | 2792 | = 0; |
e89dc920 SF |
2793 | ses->serverDomain |
2794 | [1 + (2 * len)] | |
1da177e4 LT |
2795 | = 0; |
2796 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 2797 | else { |
cd49b492 | 2798 | kfree(ses->serverDomain); |
1da177e4 | 2799 | ses->serverDomain = |
e915fc49 | 2800 | kzalloc(2, |
1da177e4 | 2801 | GFP_KERNEL); |
a424f8bf | 2802 | } |
1da177e4 | 2803 | } else { /* no room so create dummy domain and NOS string */ |
cd49b492 | 2804 | kfree(ses->serverDomain); |
1da177e4 | 2805 | ses->serverDomain = |
e915fc49 | 2806 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2807 | kfree(ses->serverNOS); |
1da177e4 | 2808 | ses->serverNOS = |
e915fc49 | 2809 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2810 | } |
2811 | } else { /* ASCII */ | |
2812 | len = strnlen(bcc_ptr, 1024); | |
2813 | if (((long) bcc_ptr + len) - (long) | |
2814 | pByteArea(smb_buffer_response) | |
2815 | <= BCC(smb_buffer_response)) { | |
fb8c4b14 | 2816 | if (ses->serverOS) |
a424f8bf | 2817 | kfree(ses->serverOS); |
1da177e4 | 2818 | ses->serverOS = |
e915fc49 | 2819 | kzalloc(len + 1, |
1da177e4 LT |
2820 | GFP_KERNEL); |
2821 | strncpy(ses->serverOS, | |
2822 | bcc_ptr, len); | |
2823 | ||
2824 | bcc_ptr += len; | |
2825 | bcc_ptr[0] = 0; /* null terminate string */ | |
2826 | bcc_ptr++; | |
2827 | ||
2828 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2829 | kfree(ses->serverNOS); |
1da177e4 | 2830 | ses->serverNOS = |
e915fc49 | 2831 | kzalloc(len + 1, |
1da177e4 LT |
2832 | GFP_KERNEL); |
2833 | strncpy(ses->serverNOS, bcc_ptr, len); | |
2834 | bcc_ptr += len; | |
2835 | bcc_ptr[0] = 0; | |
2836 | bcc_ptr++; | |
2837 | ||
2838 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2839 | kfree(ses->serverDomain); |
1da177e4 | 2840 | ses->serverDomain = |
e915fc49 | 2841 | kzalloc(len + 1, |
1da177e4 | 2842 | GFP_KERNEL); |
50c2f753 SF |
2843 | strncpy(ses->serverDomain, |
2844 | bcc_ptr, len); | |
1da177e4 LT |
2845 | bcc_ptr += len; |
2846 | bcc_ptr[0] = 0; | |
2847 | bcc_ptr++; | |
2848 | } else | |
2849 | cFYI(1, | |
63135e08 SF |
2850 | ("field of length %d " |
2851 | "extends beyond end of smb", | |
1da177e4 LT |
2852 | len)); |
2853 | } | |
2854 | } else { | |
50c2f753 SF |
2855 | cERROR(1, ("Security Blob Length extends beyond" |
2856 | " end of SMB")); | |
1da177e4 LT |
2857 | } |
2858 | } else { | |
2859 | cERROR(1, ("No session structure passed in.")); | |
2860 | } | |
2861 | } else { | |
2862 | cERROR(1, | |
5815449d | 2863 | (" Invalid Word count %d:", |
1da177e4 LT |
2864 | smb_buffer_response->WordCount)); |
2865 | rc = -EIO; | |
2866 | } | |
2867 | ||
2868 | if (smb_buffer) | |
2869 | cifs_buf_release(smb_buffer); | |
2870 | ||
2871 | return rc; | |
2872 | } | |
2873 | static int | |
2874 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
2875 | char *ntlm_session_key, int ntlmv2_flag, | |
2876 | const struct nls_table *nls_codepage) | |
2877 | { | |
2878 | struct smb_hdr *smb_buffer; | |
2879 | struct smb_hdr *smb_buffer_response; | |
2880 | SESSION_SETUP_ANDX *pSMB; | |
2881 | SESSION_SETUP_ANDX *pSMBr; | |
2882 | char *bcc_ptr; | |
2883 | char *user; | |
2884 | char *domain; | |
2885 | int rc = 0; | |
2886 | int remaining_words = 0; | |
2887 | int bytes_returned = 0; | |
2888 | int len; | |
2889 | int SecurityBlobLength = sizeof (AUTHENTICATE_MESSAGE); | |
2890 | PAUTHENTICATE_MESSAGE SecurityBlob; | |
2891 | __u32 negotiate_flags, capabilities; | |
2892 | __u16 count; | |
2893 | ||
2894 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
fb8c4b14 | 2895 | if (ses == NULL) |
1da177e4 LT |
2896 | return -EINVAL; |
2897 | user = ses->userName; | |
2898 | domain = ses->domainName; | |
2899 | smb_buffer = cifs_buf_get(); | |
2900 | if (smb_buffer == NULL) { | |
2901 | return -ENOMEM; | |
2902 | } | |
2903 | smb_buffer_response = smb_buffer; | |
2904 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2905 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2906 | ||
2907 | /* send SMBsessionSetup here */ | |
2908 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2909 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2910 | |
2911 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2912 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
2913 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2914 | pSMB->req.AndXCommand = 0xFF; | |
2915 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2916 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2917 | ||
2918 | pSMB->req.hdr.Uid = ses->Suid; | |
2919 | ||
fb8c4b14 | 2920 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2921 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2922 | ||
2923 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2924 | CAP_EXTENDED_SECURITY; | |
2925 | if (ses->capabilities & CAP_UNICODE) { | |
2926 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2927 | capabilities |= CAP_UNICODE; | |
2928 | } | |
2929 | if (ses->capabilities & CAP_STATUS32) { | |
2930 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2931 | capabilities |= CAP_STATUS32; | |
2932 | } | |
2933 | if (ses->capabilities & CAP_DFS) { | |
2934 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2935 | capabilities |= CAP_DFS; | |
2936 | } | |
2937 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2938 | ||
2939 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2940 | SecurityBlob = (PAUTHENTICATE_MESSAGE) bcc_ptr; | |
2941 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2942 | SecurityBlob->MessageType = NtLmAuthenticate; | |
2943 | bcc_ptr += SecurityBlobLength; | |
50c2f753 | 2944 | negotiate_flags = |
1da177e4 LT |
2945 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | |
2946 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
2947 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
fb8c4b14 | 2948 | if (sign_CIFS_PDUs) |
1da177e4 | 2949 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 2950 | if (ntlmv2_flag) |
1da177e4 LT |
2951 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; |
2952 | ||
2953 | /* setup pointers to domain name and workstation name */ | |
2954 | ||
2955 | SecurityBlob->WorkstationName.Buffer = 0; | |
2956 | SecurityBlob->WorkstationName.Length = 0; | |
2957 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2958 | SecurityBlob->SessionKey.Length = 0; | |
2959 | SecurityBlob->SessionKey.MaximumLength = 0; | |
2960 | SecurityBlob->SessionKey.Buffer = 0; | |
2961 | ||
2962 | SecurityBlob->LmChallengeResponse.Length = 0; | |
2963 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
2964 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
2965 | ||
2966 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 2967 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2968 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
2969 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
2970 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
2971 | SecurityBlob->NtChallengeResponse.Buffer = |
2972 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
2973 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
2974 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2975 | |
2976 | if (ses->capabilities & CAP_UNICODE) { | |
2977 | if (domain == NULL) { | |
2978 | SecurityBlob->DomainName.Buffer = 0; | |
2979 | SecurityBlob->DomainName.Length = 0; | |
2980 | SecurityBlob->DomainName.MaximumLength = 0; | |
2981 | } else { | |
2982 | __u16 len = | |
e89dc920 | 2983 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2984 | nls_codepage); |
2985 | len *= 2; | |
2986 | SecurityBlob->DomainName.MaximumLength = | |
2987 | cpu_to_le16(len); | |
2988 | SecurityBlob->DomainName.Buffer = | |
2989 | cpu_to_le32(SecurityBlobLength); | |
2990 | bcc_ptr += len; | |
2991 | SecurityBlobLength += len; | |
2992 | SecurityBlob->DomainName.Length = | |
2993 | cpu_to_le16(len); | |
2994 | } | |
2995 | if (user == NULL) { | |
2996 | SecurityBlob->UserName.Buffer = 0; | |
2997 | SecurityBlob->UserName.Length = 0; | |
2998 | SecurityBlob->UserName.MaximumLength = 0; | |
2999 | } else { | |
3000 | __u16 len = | |
e89dc920 | 3001 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 LT |
3002 | nls_codepage); |
3003 | len *= 2; | |
3004 | SecurityBlob->UserName.MaximumLength = | |
3005 | cpu_to_le16(len); | |
3006 | SecurityBlob->UserName.Buffer = | |
3007 | cpu_to_le32(SecurityBlobLength); | |
3008 | bcc_ptr += len; | |
3009 | SecurityBlobLength += len; | |
3010 | SecurityBlob->UserName.Length = | |
3011 | cpu_to_le16(len); | |
3012 | } | |
3013 | ||
63135e08 SF |
3014 | /* SecurityBlob->WorkstationName.Length = |
3015 | cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); | |
1da177e4 | 3016 | SecurityBlob->WorkstationName.Length *= 2; |
63135e08 SF |
3017 | SecurityBlob->WorkstationName.MaximumLength = |
3018 | cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
3019 | SecurityBlob->WorkstationName.Buffer = | |
3020 | cpu_to_le32(SecurityBlobLength); | |
1da177e4 LT |
3021 | bcc_ptr += SecurityBlob->WorkstationName.Length; |
3022 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
63135e08 SF |
3023 | SecurityBlob->WorkstationName.Length = |
3024 | cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
1da177e4 LT |
3025 | |
3026 | if ((long) bcc_ptr % 2) { | |
3027 | *bcc_ptr = 0; | |
3028 | bcc_ptr++; | |
3029 | } | |
3030 | bytes_returned = | |
e89dc920 | 3031 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
3032 | 32, nls_codepage); |
3033 | bcc_ptr += 2 * bytes_returned; | |
3034 | bytes_returned = | |
e9ff3990 | 3035 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
3036 | nls_codepage); |
3037 | bcc_ptr += 2 * bytes_returned; | |
3038 | bcc_ptr += 2; /* null term version string */ | |
3039 | bytes_returned = | |
e89dc920 | 3040 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
3041 | 64, nls_codepage); |
3042 | bcc_ptr += 2 * bytes_returned; | |
3043 | *(bcc_ptr + 1) = 0; | |
3044 | *(bcc_ptr + 2) = 0; | |
3045 | bcc_ptr += 2; /* null terminate network opsys string */ | |
3046 | *(bcc_ptr + 1) = 0; | |
3047 | *(bcc_ptr + 2) = 0; | |
3048 | bcc_ptr += 2; /* null domain */ | |
3049 | } else { /* ASCII */ | |
3050 | if (domain == NULL) { | |
3051 | SecurityBlob->DomainName.Buffer = 0; | |
3052 | SecurityBlob->DomainName.Length = 0; | |
3053 | SecurityBlob->DomainName.MaximumLength = 0; | |
3054 | } else { | |
3055 | __u16 len; | |
3056 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; | |
3057 | strncpy(bcc_ptr, domain, 63); | |
3058 | len = strnlen(domain, 64); | |
3059 | SecurityBlob->DomainName.MaximumLength = | |
3060 | cpu_to_le16(len); | |
3061 | SecurityBlob->DomainName.Buffer = | |
3062 | cpu_to_le32(SecurityBlobLength); | |
3063 | bcc_ptr += len; | |
3064 | SecurityBlobLength += len; | |
3065 | SecurityBlob->DomainName.Length = cpu_to_le16(len); | |
3066 | } | |
3067 | if (user == NULL) { | |
3068 | SecurityBlob->UserName.Buffer = 0; | |
3069 | SecurityBlob->UserName.Length = 0; | |
3070 | SecurityBlob->UserName.MaximumLength = 0; | |
3071 | } else { | |
3072 | __u16 len; | |
3073 | strncpy(bcc_ptr, user, 63); | |
3074 | len = strnlen(user, 64); | |
3075 | SecurityBlob->UserName.MaximumLength = | |
3076 | cpu_to_le16(len); | |
3077 | SecurityBlob->UserName.Buffer = | |
3078 | cpu_to_le32(SecurityBlobLength); | |
3079 | bcc_ptr += len; | |
3080 | SecurityBlobLength += len; | |
3081 | SecurityBlob->UserName.Length = cpu_to_le16(len); | |
3082 | } | |
3083 | /* BB fill in our workstation name if known BB */ | |
3084 | ||
3085 | strcpy(bcc_ptr, "Linux version "); | |
3086 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
3087 | strcpy(bcc_ptr, utsname()->release); |
3088 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
3089 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
3090 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
3091 | bcc_ptr++; /* null domain */ | |
3092 | *bcc_ptr = 0; | |
3093 | } | |
3094 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
3095 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
3096 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
3097 | smb_buffer->smb_buf_length += count; | |
3098 | pSMB->req.ByteCount = cpu_to_le16(count); | |
3099 | ||
3100 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
3101 | &bytes_returned, 1); | |
3102 | if (rc) { | |
3103 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
3104 | } else if ((smb_buffer_response->WordCount == 3) | |
3105 | || (smb_buffer_response->WordCount == 4)) { | |
3106 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
3107 | __u16 blob_len = | |
3108 | le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
3109 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
3110 | cFYI(1, (" Guest login")); /* BB Should we set anything |
3111 | in SesInfo struct ? */ | |
3112 | /* if (SecurityBlob2->MessageType != NtLm??) { | |
3113 | cFYI("Unexpected message type on auth response is %d")); | |
3114 | } */ | |
3115 | ||
1da177e4 LT |
3116 | if (ses) { |
3117 | cFYI(1, | |
50c2f753 | 3118 | ("Check challenge UID %d vs auth response UID %d", |
1da177e4 | 3119 | ses->Suid, smb_buffer_response->Uid)); |
50c2f753 SF |
3120 | /* UID left in wire format */ |
3121 | ses->Suid = smb_buffer_response->Uid; | |
3122 | bcc_ptr = pByteArea(smb_buffer_response); | |
3123 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
3124 | if ((pSMBr->resp.hdr.WordCount == 3) |
3125 | || ((pSMBr->resp.hdr.WordCount == 4) | |
3126 | && (blob_len < | |
3127 | pSMBr->resp.ByteCount))) { | |
3128 | if (pSMBr->resp.hdr.WordCount == 4) { | |
3129 | bcc_ptr += | |
3130 | blob_len; | |
3131 | cFYI(1, | |
3132 | ("Security Blob Length %d ", | |
3133 | blob_len)); | |
3134 | } | |
3135 | ||
3136 | cFYI(1, | |
3137 | ("NTLMSSP response to Authenticate ")); | |
3138 | ||
3139 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3140 | if ((long) (bcc_ptr) % 2) { | |
3141 | remaining_words = | |
3142 | (BCC(smb_buffer_response) | |
3143 | - 1) / 2; | |
3144 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
3145 | } else { | |
3146 | remaining_words = BCC(smb_buffer_response) / 2; | |
3147 | } | |
3148 | len = | |
3149 | UniStrnlen((wchar_t *) bcc_ptr,remaining_words - 1); | |
3150 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
3151 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
3152 | terminating last Unicode string in response */ | |
fb8c4b14 | 3153 | if (ses->serverOS) |
08775834 | 3154 | kfree(ses->serverOS); |
1da177e4 | 3155 | ses->serverOS = |
e915fc49 | 3156 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 3157 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 3158 | (__le16 *) |
1da177e4 LT |
3159 | bcc_ptr, len, |
3160 | nls_codepage); | |
3161 | bcc_ptr += 2 * (len + 1); | |
3162 | remaining_words -= len + 1; | |
3163 | ses->serverOS[2 * len] = 0; | |
3164 | ses->serverOS[1 + (2 * len)] = 0; | |
3165 | if (remaining_words > 0) { | |
3166 | len = UniStrnlen((wchar_t *) | |
3167 | bcc_ptr, | |
3168 | remaining_words | |
3169 | - 1); | |
cd49b492 | 3170 | kfree(ses->serverNOS); |
1da177e4 | 3171 | ses->serverNOS = |
e915fc49 | 3172 | kzalloc(2 * (len + 1), |
1da177e4 LT |
3173 | GFP_KERNEL); |
3174 | cifs_strfromUCS_le(ses-> | |
3175 | serverNOS, | |
e89dc920 | 3176 | (__le16 *) |
1da177e4 LT |
3177 | bcc_ptr, |
3178 | len, | |
3179 | nls_codepage); | |
3180 | bcc_ptr += 2 * (len + 1); | |
3181 | ses->serverNOS[2 * len] = 0; | |
3182 | ses->serverNOS[1+(2*len)] = 0; | |
3183 | remaining_words -= len + 1; | |
3184 | if (remaining_words > 0) { | |
50c2f753 | 3185 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 3186 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ |
fb8c4b14 | 3187 | if (ses->serverDomain) |
a424f8bf | 3188 | kfree(ses->serverDomain); |
1da177e4 | 3189 | ses->serverDomain = |
e915fc49 | 3190 | kzalloc(2 * |
1da177e4 LT |
3191 | (len + |
3192 | 1), | |
3193 | GFP_KERNEL); | |
3194 | cifs_strfromUCS_le | |
3195 | (ses-> | |
3196 | serverDomain, | |
e89dc920 | 3197 | (__le16 *) |
1da177e4 LT |
3198 | bcc_ptr, len, |
3199 | nls_codepage); | |
3200 | bcc_ptr += | |
3201 | 2 * (len + 1); | |
3202 | ses-> | |
3203 | serverDomain[2 | |
3204 | * len] | |
3205 | = 0; | |
3206 | ses-> | |
3207 | serverDomain[1 | |
3208 | + | |
3209 | (2 | |
3210 | * | |
3211 | len)] | |
3212 | = 0; | |
3213 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 3214 | else { |
fb8c4b14 | 3215 | if (ses->serverDomain) |
a424f8bf | 3216 | kfree(ses->serverDomain); |
e915fc49 | 3217 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 3218 | } |
1da177e4 | 3219 | } else { /* no room so create dummy domain and NOS string */ |
fb8c4b14 | 3220 | if (ses->serverDomain) |
a424f8bf | 3221 | kfree(ses->serverDomain); |
e915fc49 | 3222 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 3223 | kfree(ses->serverNOS); |
e915fc49 | 3224 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3225 | } |
3226 | } else { /* ASCII */ | |
3227 | len = strnlen(bcc_ptr, 1024); | |
50c2f753 SF |
3228 | if (((long) bcc_ptr + len) - |
3229 | (long) pByteArea(smb_buffer_response) | |
63135e08 | 3230 | <= BCC(smb_buffer_response)) { |
fb8c4b14 | 3231 | if (ses->serverOS) |
a424f8bf | 3232 | kfree(ses->serverOS); |
e915fc49 | 3233 | ses->serverOS = kzalloc(len + 1,GFP_KERNEL); |
1da177e4 LT |
3234 | strncpy(ses->serverOS,bcc_ptr, len); |
3235 | ||
3236 | bcc_ptr += len; | |
3237 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3238 | bcc_ptr++; | |
3239 | ||
3240 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3241 | kfree(ses->serverNOS); |
50c2f753 SF |
3242 | ses->serverNOS = kzalloc(len+1, |
3243 | GFP_KERNEL); | |
63135e08 SF |
3244 | strncpy(ses->serverNOS, |
3245 | bcc_ptr, len); | |
1da177e4 LT |
3246 | bcc_ptr += len; |
3247 | bcc_ptr[0] = 0; | |
3248 | bcc_ptr++; | |
3249 | ||
3250 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 3251 | if (ses->serverDomain) |
a424f8bf | 3252 | kfree(ses->serverDomain); |
63135e08 SF |
3253 | ses->serverDomain = |
3254 | kzalloc(len+1, | |
3255 | GFP_KERNEL); | |
3256 | strncpy(ses->serverDomain, | |
3257 | bcc_ptr, len); | |
1da177e4 LT |
3258 | bcc_ptr += len; |
3259 | bcc_ptr[0] = 0; | |
3260 | bcc_ptr++; | |
3261 | } else | |
3262 | cFYI(1, | |
63135e08 SF |
3263 | ("field of length %d " |
3264 | "extends beyond end of smb ", | |
1da177e4 LT |
3265 | len)); |
3266 | } | |
3267 | } else { | |
3268 | cERROR(1, | |
63135e08 SF |
3269 | (" Security Blob extends beyond end " |
3270 | "of SMB")); | |
1da177e4 LT |
3271 | } |
3272 | } else { | |
3273 | cERROR(1, ("No session structure passed in.")); | |
3274 | } | |
3275 | } else { | |
3276 | cERROR(1, | |
3277 | (" Invalid Word count %d: ", | |
3278 | smb_buffer_response->WordCount)); | |
3279 | rc = -EIO; | |
3280 | } | |
3281 | ||
3282 | if (smb_buffer) | |
3283 | cifs_buf_release(smb_buffer); | |
3284 | ||
3285 | return rc; | |
3286 | } | |
3287 | ||
3288 | int | |
3289 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3290 | const char *tree, struct cifsTconInfo *tcon, | |
3291 | const struct nls_table *nls_codepage) | |
3292 | { | |
3293 | struct smb_hdr *smb_buffer; | |
3294 | struct smb_hdr *smb_buffer_response; | |
3295 | TCONX_REQ *pSMB; | |
3296 | TCONX_RSP *pSMBr; | |
3297 | unsigned char *bcc_ptr; | |
3298 | int rc = 0; | |
3299 | int length; | |
3300 | __u16 count; | |
3301 | ||
3302 | if (ses == NULL) | |
3303 | return -EIO; | |
3304 | ||
3305 | smb_buffer = cifs_buf_get(); | |
3306 | if (smb_buffer == NULL) { | |
3307 | return -ENOMEM; | |
3308 | } | |
3309 | smb_buffer_response = smb_buffer; | |
3310 | ||
3311 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3312 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3313 | |
3314 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3315 | smb_buffer->Uid = ses->Suid; |
3316 | pSMB = (TCONX_REQ *) smb_buffer; | |
3317 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3318 | ||
3319 | pSMB->AndXCommand = 0xFF; | |
3320 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3321 | bcc_ptr = &pSMB->Password[0]; |
fb8c4b14 | 3322 | if ((ses->server->secMode) & SECMODE_USER) { |
eeac8047 | 3323 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
7c7b25bc | 3324 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3325 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3326 | /* already aligned so no need to do it below */ |
eeac8047 | 3327 | } else { |
7c7b25bc | 3328 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3329 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3330 | specified as required (when that support is added to | |
3331 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3332 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3333 | by Samba (not sure whether other servers allow |
3334 | NTLMv2 password here) */ | |
7c7b25bc | 3335 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
50c2f753 | 3336 | if ((extended_security & CIFSSEC_MAY_LANMAN) && |
7c7b25bc SF |
3337 | (ses->server->secType == LANMAN)) |
3338 | calc_lanman_hash(ses, bcc_ptr); | |
3339 | else | |
3340 | #endif /* CIFS_WEAK_PW_HASH */ | |
eeac8047 SF |
3341 | SMBNTencrypt(ses->password, |
3342 | ses->server->cryptKey, | |
3343 | bcc_ptr); | |
3344 | ||
7c7b25bc | 3345 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
fb8c4b14 | 3346 | if (ses->capabilities & CAP_UNICODE) { |
7c7b25bc SF |
3347 | /* must align unicode strings */ |
3348 | *bcc_ptr = 0; /* null byte password */ | |
3349 | bcc_ptr++; | |
3350 | } | |
eeac8047 | 3351 | } |
1da177e4 | 3352 | |
50c2f753 | 3353 | if (ses->server->secMode & |
a878fb22 | 3354 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3355 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3356 | ||
3357 | if (ses->capabilities & CAP_STATUS32) { | |
3358 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3359 | } | |
3360 | if (ses->capabilities & CAP_DFS) { | |
3361 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3362 | } | |
3363 | if (ses->capabilities & CAP_UNICODE) { | |
3364 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3365 | length = | |
50c2f753 SF |
3366 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3367 | 6 /* max utf8 char length in bytes */ * | |
a878fb22 SF |
3368 | (/* server len*/ + 256 /* share len */), nls_codepage); |
3369 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3370 | bcc_ptr += 2; /* skip trailing null */ |
3371 | } else { /* ASCII */ | |
1da177e4 LT |
3372 | strcpy(bcc_ptr, tree); |
3373 | bcc_ptr += strlen(tree) + 1; | |
3374 | } | |
3375 | strcpy(bcc_ptr, "?????"); | |
3376 | bcc_ptr += strlen("?????"); | |
3377 | bcc_ptr += 1; | |
3378 | count = bcc_ptr - &pSMB->Password[0]; | |
3379 | pSMB->hdr.smb_buf_length += count; | |
3380 | pSMB->ByteCount = cpu_to_le16(count); | |
3381 | ||
3382 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, 0); | |
3383 | ||
3384 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3385 | /* above now done in SendReceive */ | |
3386 | if ((rc == 0) && (tcon != NULL)) { | |
3387 | tcon->tidStatus = CifsGood; | |
3388 | tcon->tid = smb_buffer_response->Tid; | |
3389 | bcc_ptr = pByteArea(smb_buffer_response); | |
3390 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
50c2f753 SF |
3391 | /* skip service field (NB: this field is always ASCII) */ |
3392 | bcc_ptr += length + 1; | |
1da177e4 LT |
3393 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
3394 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3395 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3396 | if ((bcc_ptr + (2 * length)) - | |
3397 | pByteArea(smb_buffer_response) <= | |
3398 | BCC(smb_buffer_response)) { | |
f99d49ad | 3399 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3400 | tcon->nativeFileSystem = |
e915fc49 | 3401 | kzalloc(length + 2, GFP_KERNEL); |
1da177e4 | 3402 | cifs_strfromUCS_le(tcon->nativeFileSystem, |
e89dc920 | 3403 | (__le16 *) bcc_ptr, |
1da177e4 LT |
3404 | length, nls_codepage); |
3405 | bcc_ptr += 2 * length; | |
3406 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3407 | bcc_ptr[1] = 0; | |
3408 | bcc_ptr += 2; | |
3409 | } | |
50c2f753 | 3410 | /* else do not bother copying these information fields*/ |
1da177e4 LT |
3411 | } else { |
3412 | length = strnlen(bcc_ptr, 1024); | |
3413 | if ((bcc_ptr + length) - | |
3414 | pByteArea(smb_buffer_response) <= | |
3415 | BCC(smb_buffer_response)) { | |
f99d49ad | 3416 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3417 | tcon->nativeFileSystem = |
e915fc49 | 3418 | kzalloc(length + 1, GFP_KERNEL); |
1da177e4 LT |
3419 | strncpy(tcon->nativeFileSystem, bcc_ptr, |
3420 | length); | |
3421 | } | |
50c2f753 | 3422 | /* else do not bother copying these information fields*/ |
1da177e4 | 3423 | } |
fb8c4b14 | 3424 | if ((smb_buffer_response->WordCount == 3) || |
1a4e15a0 SF |
3425 | (smb_buffer_response->WordCount == 7)) |
3426 | /* field is in same location */ | |
3979877e SF |
3427 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
3428 | else | |
3429 | tcon->Flags = 0; | |
1da177e4 LT |
3430 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3431 | } else if ((rc == 0) && tcon == NULL) { | |
50c2f753 | 3432 | /* all we need to save for IPC$ connection */ |
1da177e4 LT |
3433 | ses->ipc_tid = smb_buffer_response->Tid; |
3434 | } | |
3435 | ||
3436 | if (smb_buffer) | |
3437 | cifs_buf_release(smb_buffer); | |
3438 | return rc; | |
3439 | } | |
3440 | ||
3441 | int | |
3442 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3443 | { | |
3444 | int rc = 0; | |
3445 | int xid; | |
3446 | struct cifsSesInfo *ses = NULL; | |
3447 | struct task_struct *cifsd_task; | |
50c2f753 | 3448 | char *tmp; |
1da177e4 LT |
3449 | |
3450 | xid = GetXid(); | |
3451 | ||
3452 | if (cifs_sb->tcon) { | |
3453 | ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ | |
3454 | rc = CIFSSMBTDis(xid, cifs_sb->tcon); | |
3455 | if (rc == -EBUSY) { | |
3456 | FreeXid(xid); | |
3457 | return 0; | |
3458 | } | |
3459 | tconInfoFree(cifs_sb->tcon); | |
3460 | if ((ses) && (ses->server)) { | |
3461 | /* save off task so we do not refer to ses later */ | |
3462 | cifsd_task = ses->server->tsk; | |
3463 | cFYI(1, ("About to do SMBLogoff ")); | |
3464 | rc = CIFSSMBLogoff(xid, ses); | |
3465 | if (rc == -EBUSY) { | |
3466 | FreeXid(xid); | |
3467 | return 0; | |
3468 | } else if (rc == -ESHUTDOWN) { | |
467a8f8d | 3469 | cFYI(1, ("Waking up socket by sending signal")); |
f7f7c31c | 3470 | if (cifsd_task) { |
50c2f753 | 3471 | force_sig(SIGKILL, cifsd_task); |
aaf737ad | 3472 | kthread_stop(cifsd_task); |
f191401f | 3473 | } |
1da177e4 LT |
3474 | rc = 0; |
3475 | } /* else - we have an smb session | |
3476 | left on this socket do not kill cifsd */ | |
3477 | } else | |
3478 | cFYI(1, ("No session or bad tcon")); | |
3479 | } | |
50c2f753 | 3480 | |
1da177e4 | 3481 | cifs_sb->tcon = NULL; |
2fe87f02 SF |
3482 | tmp = cifs_sb->prepath; |
3483 | cifs_sb->prepathlen = 0; | |
3484 | cifs_sb->prepath = NULL; | |
3485 | kfree(tmp); | |
041e0e3b NA |
3486 | if (ses) |
3487 | schedule_timeout_interruptible(msecs_to_jiffies(500)); | |
1da177e4 LT |
3488 | if (ses) |
3489 | sesInfoFree(ses); | |
3490 | ||
3491 | FreeXid(xid); | |
50c2f753 SF |
3492 | return rc; /* BB check if we should always return zero here */ |
3493 | } | |
1da177e4 LT |
3494 | |
3495 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
50c2f753 | 3496 | struct nls_table *nls_info) |
1da177e4 LT |
3497 | { |
3498 | int rc = 0; | |
7c7b25bc | 3499 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
1da177e4 | 3500 | int ntlmv2_flag = FALSE; |
ad009ac9 | 3501 | int first_time = 0; |
1da177e4 LT |
3502 | |
3503 | /* what if server changes its buffer size after dropping the session? */ | |
fb8c4b14 | 3504 | if (pSesInfo->server->maxBuf == 0) /* no need to send on reconnect */ { |
1da177e4 | 3505 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
fb8c4b14 | 3506 | if (rc == -EAGAIN) /* retry only once on 1st time connection */ { |
1da177e4 | 3507 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
50c2f753 | 3508 | if (rc == -EAGAIN) |
1da177e4 LT |
3509 | rc = -EHOSTDOWN; |
3510 | } | |
fb8c4b14 | 3511 | if (rc == 0) { |
1da177e4 | 3512 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 | 3513 | if (pSesInfo->server->tcpStatus != CifsExiting) |
1da177e4 LT |
3514 | pSesInfo->server->tcpStatus = CifsGood; |
3515 | else | |
3516 | rc = -EHOSTDOWN; | |
3517 | spin_unlock(&GlobalMid_Lock); | |
3518 | ||
3519 | } | |
ad009ac9 | 3520 | first_time = 1; |
1da177e4 LT |
3521 | } |
3522 | if (!rc) { | |
9ac00b7d | 3523 | pSesInfo->flags = 0; |
1da177e4 | 3524 | pSesInfo->capabilities = pSesInfo->server->capabilities; |
fb8c4b14 | 3525 | if (linuxExtEnabled == 0) |
1da177e4 | 3526 | pSesInfo->capabilities &= (~CAP_UNIX); |
ad009ac9 | 3527 | /* pSesInfo->sequence_number = 0;*/ |
50c2f753 SF |
3528 | cFYI(1, |
3529 | ("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", | |
1da177e4 LT |
3530 | pSesInfo->server->secMode, |
3531 | pSesInfo->server->capabilities, | |
175ec9e1 | 3532 | pSesInfo->server->timeAdj)); |
fb8c4b14 | 3533 | if (experimEnabled < 2) |
3979877e SF |
3534 | rc = CIFS_SessSetup(xid, pSesInfo, |
3535 | first_time, nls_info); | |
189acaae | 3536 | else if (extended_security |
50c2f753 | 3537 | && (pSesInfo->capabilities |
175ec9e1 | 3538 | & CAP_EXTENDED_SECURITY) |
1da177e4 | 3539 | && (pSesInfo->server->secType == NTLMSSP)) { |
189acaae | 3540 | rc = -EOPNOTSUPP; |
1da177e4 LT |
3541 | } else if (extended_security |
3542 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
3543 | && (pSesInfo->server->secType == RawNTLMSSP)) { | |
5815449d | 3544 | cFYI(1, ("NTLMSSP sesssetup")); |
1da177e4 LT |
3545 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, |
3546 | pSesInfo, | |
3547 | &ntlmv2_flag, | |
3548 | nls_info); | |
3549 | if (!rc) { | |
fb8c4b14 | 3550 | if (ntlmv2_flag) { |
50c2f753 | 3551 | char *v2_response; |
467a8f8d | 3552 | cFYI(1, ("more secure NTLM ver2 hash")); |
50c2f753 | 3553 | if (CalcNTLMv2_partial_mac_key(pSesInfo, |
1da177e4 LT |
3554 | nls_info)) { |
3555 | rc = -ENOMEM; | |
3556 | goto ss_err_exit; | |
3557 | } else | |
3558 | v2_response = kmalloc(16 + 64 /* blob */, GFP_KERNEL); | |
fb8c4b14 | 3559 | if (v2_response) { |
50c2f753 SF |
3560 | CalcNTLMv2_response(pSesInfo, |
3561 | v2_response); | |
fb8c4b14 | 3562 | /* if (first_time) |
50c2f753 SF |
3563 | cifs_calculate_ntlmv2_mac_key( |
3564 | pSesInfo->server->mac_signing_key, | |
3565 | response, ntlm_session_key,*/ | |
1da177e4 LT |
3566 | kfree(v2_response); |
3567 | /* BB Put dummy sig in SessSetup PDU? */ | |
3568 | } else { | |
3569 | rc = -ENOMEM; | |
3570 | goto ss_err_exit; | |
3571 | } | |
3572 | ||
3573 | } else { | |
3574 | SMBNTencrypt(pSesInfo->password, | |
3575 | pSesInfo->server->cryptKey, | |
3576 | ntlm_session_key); | |
3577 | ||
fb8c4b14 | 3578 | if (first_time) |
ad009ac9 | 3579 | cifs_calculate_mac_key( |
b609f06a | 3580 | &pSesInfo->server->mac_signing_key, |
ad009ac9 SF |
3581 | ntlm_session_key, |
3582 | pSesInfo->password); | |
1da177e4 LT |
3583 | } |
3584 | /* for better security the weaker lanman hash not sent | |
3585 | in AuthSessSetup so we no longer calculate it */ | |
3586 | ||
3587 | rc = CIFSNTLMSSPAuthSessSetup(xid, | |
3588 | pSesInfo, | |
3589 | ntlm_session_key, | |
3590 | ntlmv2_flag, | |
3591 | nls_info); | |
3592 | } | |
3593 | } else { /* old style NTLM 0.12 session setup */ | |
3594 | SMBNTencrypt(pSesInfo->password, | |
3595 | pSesInfo->server->cryptKey, | |
3596 | ntlm_session_key); | |
3597 | ||
fb8c4b14 | 3598 | if (first_time) |
ad009ac9 | 3599 | cifs_calculate_mac_key( |
b609f06a | 3600 | &pSesInfo->server->mac_signing_key, |
ad009ac9 SF |
3601 | ntlm_session_key, pSesInfo->password); |
3602 | ||
1da177e4 LT |
3603 | rc = CIFSSessSetup(xid, pSesInfo, |
3604 | ntlm_session_key, nls_info); | |
3605 | } | |
3606 | if (rc) { | |
fb8c4b14 | 3607 | cERROR(1, ("Send error in SessSetup = %d", rc)); |
1da177e4 | 3608 | } else { |
467a8f8d | 3609 | cFYI(1, ("CIFS Session Established successfully")); |
1da177e4 LT |
3610 | pSesInfo->status = CifsGood; |
3611 | } | |
3612 | } | |
3613 | ss_err_exit: | |
3614 | return rc; | |
3615 | } | |
3616 |