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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); |
26f57364 | 127 | if (kthread_should_stop()) { |
fb8c4b14 | 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); | |
26f57364 | 154 | if ((tcon) && (tcon->ses) && (tcon->ses->server == server)) |
1da177e4 | 155 | tcon->tidStatus = CifsNeedReconnect; |
1da177e4 LT |
156 | } |
157 | read_unlock(&GlobalSMBSeslock); | |
158 | /* do not want to be sending data on a socket we are freeing */ | |
fb8c4b14 SF |
159 | down(&server->tcpSem); |
160 | if (server->ssocket) { | |
467a8f8d | 161 | cFYI(1, ("State: 0x%x Flags: 0x%lx", server->ssocket->state, |
1da177e4 | 162 | server->ssocket->flags)); |
fb8c4b14 SF |
163 | server->ssocket->ops->shutdown(server->ssocket, SEND_SHUTDOWN); |
164 | cFYI(1, ("Post shutdown state: 0x%x Flags: 0x%lx", | |
467a8f8d | 165 | server->ssocket->state, |
1da177e4 LT |
166 | server->ssocket->flags)); |
167 | sock_release(server->ssocket); | |
168 | server->ssocket = NULL; | |
169 | } | |
170 | ||
171 | spin_lock(&GlobalMid_Lock); | |
172 | list_for_each(tmp, &server->pending_mid_q) { | |
173 | mid_entry = list_entry(tmp, struct | |
174 | mid_q_entry, | |
175 | qhead); | |
fb8c4b14 SF |
176 | if (mid_entry) { |
177 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
09d1db5c SF |
178 | /* Mark other intransit requests as needing |
179 | retry so we do not immediately mark the | |
180 | session bad again (ie after we reconnect | |
181 | below) as they timeout too */ | |
1da177e4 LT |
182 | mid_entry->midState = MID_RETRY_NEEDED; |
183 | } | |
184 | } | |
185 | } | |
186 | spin_unlock(&GlobalMid_Lock); | |
fb8c4b14 | 187 | up(&server->tcpSem); |
1da177e4 | 188 | |
26f57364 | 189 | while ((!kthread_should_stop()) && (server->tcpStatus != CifsGood)) { |
6c3d8909 | 190 | try_to_freeze(); |
fb8c4b14 SF |
191 | if (server->protocolType == IPV6) { |
192 | rc = ipv6_connect(&server->addr.sockAddr6, | |
193 | &server->ssocket); | |
1da177e4 | 194 | } else { |
fb8c4b14 | 195 | rc = ipv4_connect(&server->addr.sockAddr, |
1da177e4 | 196 | &server->ssocket, |
a10faeb2 SF |
197 | server->workstation_RFC1001_name, |
198 | server->server_RFC1001_name); | |
1da177e4 | 199 | } |
fb8c4b14 SF |
200 | if (rc) { |
201 | cFYI(1, ("reconnect error %d", rc)); | |
0cb766ae | 202 | msleep(3000); |
1da177e4 LT |
203 | } else { |
204 | atomic_inc(&tcpSesReconnectCount); | |
205 | spin_lock(&GlobalMid_Lock); | |
26f57364 | 206 | if (!kthread_should_stop()) |
1da177e4 | 207 | server->tcpStatus = CifsGood; |
ad009ac9 | 208 | server->sequence_number = 0; |
fb8c4b14 | 209 | spin_unlock(&GlobalMid_Lock); |
1da177e4 LT |
210 | /* atomic_set(&server->inFlight,0);*/ |
211 | wake_up(&server->response_q); | |
212 | } | |
213 | } | |
214 | return rc; | |
215 | } | |
216 | ||
fb8c4b14 | 217 | /* |
e4eb295d SF |
218 | return codes: |
219 | 0 not a transact2, or all data present | |
220 | >0 transact2 with that much data missing | |
221 | -EINVAL = invalid transact2 | |
222 | ||
223 | */ | |
fb8c4b14 | 224 | static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) |
e4eb295d | 225 | { |
fb8c4b14 SF |
226 | struct smb_t2_rsp *pSMBt; |
227 | int total_data_size; | |
e4eb295d SF |
228 | int data_in_this_rsp; |
229 | int remaining; | |
230 | ||
fb8c4b14 | 231 | if (pSMB->Command != SMB_COM_TRANSACTION2) |
e4eb295d SF |
232 | return 0; |
233 | ||
fb8c4b14 SF |
234 | /* check for plausible wct, bcc and t2 data and parm sizes */ |
235 | /* check for parm and data offset going beyond end of smb */ | |
236 | if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
467a8f8d | 237 | cFYI(1, ("invalid transact2 word count")); |
e4eb295d SF |
238 | return -EINVAL; |
239 | } | |
240 | ||
241 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
242 | ||
243 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
244 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
245 | ||
246 | remaining = total_data_size - data_in_this_rsp; | |
247 | ||
fb8c4b14 | 248 | if (remaining == 0) |
e4eb295d | 249 | return 0; |
fb8c4b14 | 250 | else if (remaining < 0) { |
467a8f8d | 251 | cFYI(1, ("total data %d smaller than data in frame %d", |
e4eb295d SF |
252 | total_data_size, data_in_this_rsp)); |
253 | return -EINVAL; | |
254 | } else { | |
467a8f8d | 255 | cFYI(1, ("missing %d bytes from transact2, check next response", |
e4eb295d | 256 | remaining)); |
fb8c4b14 SF |
257 | if (total_data_size > maxBufSize) { |
258 | cERROR(1, ("TotalDataSize %d is over maximum buffer %d", | |
259 | total_data_size, maxBufSize)); | |
260 | return -EINVAL; | |
e4eb295d SF |
261 | } |
262 | return remaining; | |
263 | } | |
264 | } | |
265 | ||
fb8c4b14 | 266 | static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) |
e4eb295d SF |
267 | { |
268 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
269 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
270 | int total_data_size; | |
271 | int total_in_buf; | |
272 | int remaining; | |
273 | int total_in_buf2; | |
fb8c4b14 SF |
274 | char *data_area_of_target; |
275 | char *data_area_of_buf2; | |
e4eb295d SF |
276 | __u16 byte_count; |
277 | ||
278 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
279 | ||
fb8c4b14 | 280 | if (total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { |
63135e08 | 281 | cFYI(1, ("total data size of primary and secondary t2 differ")); |
e4eb295d SF |
282 | } |
283 | ||
284 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
285 | ||
286 | remaining = total_data_size - total_in_buf; | |
50c2f753 | 287 | |
fb8c4b14 | 288 | if (remaining < 0) |
e4eb295d SF |
289 | return -EINVAL; |
290 | ||
fb8c4b14 | 291 | if (remaining == 0) /* nothing to do, ignore */ |
e4eb295d | 292 | return 0; |
50c2f753 | 293 | |
e4eb295d | 294 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); |
fb8c4b14 | 295 | if (remaining < total_in_buf2) { |
467a8f8d | 296 | cFYI(1, ("transact2 2nd response contains too much data")); |
e4eb295d SF |
297 | } |
298 | ||
299 | /* find end of first SMB data area */ | |
fb8c4b14 | 300 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + |
e4eb295d SF |
301 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); |
302 | /* validate target area */ | |
303 | ||
304 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
fb8c4b14 | 305 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); |
e4eb295d SF |
306 | |
307 | data_area_of_target += total_in_buf; | |
308 | ||
309 | /* copy second buffer into end of first buffer */ | |
fb8c4b14 | 310 | memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); |
e4eb295d SF |
311 | total_in_buf += total_in_buf2; |
312 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
313 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
314 | byte_count += total_in_buf2; | |
315 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
316 | ||
70ca734a | 317 | byte_count = pTargetSMB->smb_buf_length; |
e4eb295d SF |
318 | byte_count += total_in_buf2; |
319 | ||
320 | /* BB also add check that we are not beyond maximum buffer size */ | |
50c2f753 | 321 | |
70ca734a | 322 | pTargetSMB->smb_buf_length = byte_count; |
e4eb295d | 323 | |
fb8c4b14 | 324 | if (remaining == total_in_buf2) { |
467a8f8d | 325 | cFYI(1, ("found the last secondary response")); |
e4eb295d SF |
326 | return 0; /* we are done */ |
327 | } else /* more responses to go */ | |
328 | return 1; | |
329 | ||
330 | } | |
331 | ||
1da177e4 LT |
332 | static int |
333 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
334 | { | |
335 | int length; | |
336 | unsigned int pdu_length, total_read; | |
337 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
338 | struct smb_hdr *bigbuf = NULL; |
339 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
340 | struct msghdr smb_msg; |
341 | struct kvec iov; | |
342 | struct socket *csocket = server->ssocket; | |
343 | struct list_head *tmp; | |
344 | struct cifsSesInfo *ses; | |
345 | struct task_struct *task_to_wake = NULL; | |
346 | struct mid_q_entry *mid_entry; | |
70ca734a | 347 | char temp; |
b8643e1b | 348 | int isLargeBuf = FALSE; |
e4eb295d SF |
349 | int isMultiRsp; |
350 | int reconnect; | |
1da177e4 | 351 | |
1da177e4 LT |
352 | current->flags |= PF_MEMALLOC; |
353 | server->tsk = current; /* save process info to wake at shutdown */ | |
354 | cFYI(1, ("Demultiplex PID: %d", current->pid)); | |
fb8c4b14 | 355 | write_lock(&GlobalSMBSeslock); |
1da177e4 LT |
356 | atomic_inc(&tcpSesAllocCount); |
357 | length = tcpSesAllocCount.counter; | |
358 | write_unlock(&GlobalSMBSeslock); | |
f191401f | 359 | complete(&cifsd_complete); |
26f57364 SF |
360 | if (length > 1) |
361 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, | |
362 | GFP_KERNEL); | |
1da177e4 | 363 | |
83144186 | 364 | set_freezable(); |
aaf737ad | 365 | while (!kthread_should_stop()) { |
ede1327e SF |
366 | if (try_to_freeze()) |
367 | continue; | |
b8643e1b SF |
368 | if (bigbuf == NULL) { |
369 | bigbuf = cifs_buf_get(); | |
0fd1ffe0 PM |
370 | if (!bigbuf) { |
371 | cERROR(1, ("No memory for large SMB response")); | |
b8643e1b SF |
372 | msleep(3000); |
373 | /* retry will check if exiting */ | |
374 | continue; | |
375 | } | |
0fd1ffe0 PM |
376 | } else if (isLargeBuf) { |
377 | /* we are reusing a dirty large buf, clear its start */ | |
26f57364 | 378 | memset(bigbuf, 0, sizeof(struct smb_hdr)); |
1da177e4 | 379 | } |
b8643e1b SF |
380 | |
381 | if (smallbuf == NULL) { | |
382 | smallbuf = cifs_small_buf_get(); | |
0fd1ffe0 PM |
383 | if (!smallbuf) { |
384 | cERROR(1, ("No memory for SMB response")); | |
b8643e1b SF |
385 | msleep(1000); |
386 | /* retry will check if exiting */ | |
387 | continue; | |
388 | } | |
389 | /* beginning of smb buffer is cleared in our buf_get */ | |
390 | } else /* if existing small buf clear beginning */ | |
26f57364 | 391 | memset(smallbuf, 0, sizeof(struct smb_hdr)); |
b8643e1b SF |
392 | |
393 | isLargeBuf = FALSE; | |
e4eb295d | 394 | isMultiRsp = FALSE; |
b8643e1b | 395 | smb_buffer = smallbuf; |
1da177e4 LT |
396 | iov.iov_base = smb_buffer; |
397 | iov.iov_len = 4; | |
398 | smb_msg.msg_control = NULL; | |
399 | smb_msg.msg_controllen = 0; | |
f01d5e14 SF |
400 | pdu_length = 4; /* enough to get RFC1001 header */ |
401 | incomplete_rcv: | |
1da177e4 LT |
402 | length = |
403 | kernel_recvmsg(csocket, &smb_msg, | |
f01d5e14 | 404 | &iov, 1, pdu_length, 0 /* BB other flags? */); |
1da177e4 | 405 | |
26f57364 | 406 | if (kthread_should_stop()) { |
1da177e4 LT |
407 | break; |
408 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
0fd1ffe0 | 409 | cFYI(1, ("Reconnect after server stopped responding")); |
1da177e4 | 410 | cifs_reconnect(server); |
0fd1ffe0 | 411 | cFYI(1, ("call to reconnect done")); |
1da177e4 LT |
412 | csocket = server->ssocket; |
413 | continue; | |
414 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 415 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
416 | allowing socket to clear and app threads to set |
417 | tcpStatus CifsNeedReconnect if server hung */ | |
418 | continue; | |
419 | } else if (length <= 0) { | |
0fd1ffe0 PM |
420 | if (server->tcpStatus == CifsNew) { |
421 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
422 | /* some servers kill the TCP session rather than |
423 | returning an SMB negprot error, in which | |
424 | case reconnecting here is not going to help, | |
425 | and so simply return error to mount */ | |
1da177e4 LT |
426 | break; |
427 | } | |
0fd1ffe0 | 428 | if (!try_to_freeze() && (length == -EINTR)) { |
467a8f8d | 429 | cFYI(1, ("cifsd thread killed")); |
1da177e4 LT |
430 | break; |
431 | } | |
467a8f8d | 432 | cFYI(1, ("Reconnect after unexpected peek error %d", |
57337e42 | 433 | length)); |
1da177e4 LT |
434 | cifs_reconnect(server); |
435 | csocket = server->ssocket; | |
436 | wake_up(&server->response_q); | |
437 | continue; | |
46810cbf | 438 | } else if (length < 4) { |
f01d5e14 | 439 | cFYI(1, ("less than four bytes received (%d bytes)", |
46810cbf | 440 | length)); |
f01d5e14 | 441 | pdu_length -= length; |
f01d5e14 SF |
442 | msleep(1); |
443 | goto incomplete_rcv; | |
46810cbf | 444 | } |
1da177e4 | 445 | |
70ca734a SF |
446 | /* The right amount was read from socket - 4 bytes */ |
447 | /* so we can now interpret the length field */ | |
46810cbf | 448 | |
70ca734a SF |
449 | /* the first byte big endian of the length field, |
450 | is actually not part of the length but the type | |
451 | with the most common, zero, as regular data */ | |
452 | temp = *((char *) smb_buffer); | |
46810cbf | 453 | |
fb8c4b14 | 454 | /* Note that FC 1001 length is big endian on the wire, |
70ca734a SF |
455 | but we convert it here so it is always manipulated |
456 | as host byte order */ | |
46810cbf | 457 | pdu_length = ntohl(smb_buffer->smb_buf_length); |
70ca734a SF |
458 | smb_buffer->smb_buf_length = pdu_length; |
459 | ||
467a8f8d | 460 | cFYI(1, ("rfc1002 length 0x%x", pdu_length+4)); |
46810cbf | 461 | |
70ca734a | 462 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
fb8c4b14 | 463 | continue; |
70ca734a | 464 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
467a8f8d | 465 | cFYI(1, ("Good RFC 1002 session rsp")); |
e4eb295d | 466 | continue; |
70ca734a | 467 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
fb8c4b14 | 468 | /* we get this from Windows 98 instead of |
46810cbf | 469 | an error on SMB negprot response */ |
fb8c4b14 | 470 | cFYI(1, ("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 471 | pdu_length)); |
fb8c4b14 SF |
472 | if (server->tcpStatus == CifsNew) { |
473 | /* if nack on negprot (rather than | |
46810cbf SF |
474 | ret of smb negprot error) reconnecting |
475 | not going to help, ret error to mount */ | |
476 | break; | |
477 | } else { | |
478 | /* give server a second to | |
479 | clean up before reconnect attempt */ | |
480 | msleep(1000); | |
481 | /* always try 445 first on reconnect | |
482 | since we get NACK on some if we ever | |
fb8c4b14 | 483 | connected to port 139 (the NACK is |
46810cbf SF |
484 | since we do not begin with RFC1001 |
485 | session initialize frame) */ | |
fb8c4b14 | 486 | server->addr.sockAddr.sin_port = |
46810cbf | 487 | htons(CIFS_PORT); |
1da177e4 LT |
488 | cifs_reconnect(server); |
489 | csocket = server->ssocket; | |
46810cbf | 490 | wake_up(&server->response_q); |
1da177e4 | 491 | continue; |
46810cbf | 492 | } |
70ca734a | 493 | } else if (temp != (char) 0) { |
fb8c4b14 | 494 | cERROR(1, ("Unknown RFC 1002 frame")); |
70ca734a SF |
495 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
496 | length); | |
46810cbf SF |
497 | cifs_reconnect(server); |
498 | csocket = server->ssocket; | |
499 | continue; | |
e4eb295d SF |
500 | } |
501 | ||
502 | /* else we have an SMB response */ | |
fb8c4b14 | 503 | if ((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || |
26f57364 | 504 | (pdu_length < sizeof(struct smb_hdr) - 1 - 4)) { |
e4eb295d | 505 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 506 | length, pdu_length+4)); |
e4eb295d SF |
507 | cifs_reconnect(server); |
508 | csocket = server->ssocket; | |
509 | wake_up(&server->response_q); | |
510 | continue; | |
fb8c4b14 | 511 | } |
e4eb295d SF |
512 | |
513 | /* else length ok */ | |
514 | reconnect = 0; | |
515 | ||
fb8c4b14 | 516 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
e4eb295d SF |
517 | isLargeBuf = TRUE; |
518 | memcpy(bigbuf, smallbuf, 4); | |
519 | smb_buffer = bigbuf; | |
520 | } | |
521 | length = 0; | |
522 | iov.iov_base = 4 + (char *)smb_buffer; | |
523 | iov.iov_len = pdu_length; | |
fb8c4b14 | 524 | for (total_read = 0; total_read < pdu_length; |
e4eb295d SF |
525 | total_read += length) { |
526 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
527 | pdu_length - total_read, 0); | |
26f57364 | 528 | if (kthread_should_stop() || |
e4eb295d SF |
529 | (length == -EINTR)) { |
530 | /* then will exit */ | |
531 | reconnect = 2; | |
532 | break; | |
533 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
534 | cifs_reconnect(server); |
535 | csocket = server->ssocket; | |
fb8c4b14 | 536 | /* Reconnect wakes up rspns q */ |
e4eb295d SF |
537 | /* Now we will reread sock */ |
538 | reconnect = 1; | |
539 | break; | |
fb8c4b14 | 540 | } else if ((length == -ERESTARTSYS) || |
e4eb295d SF |
541 | (length == -EAGAIN)) { |
542 | msleep(1); /* minimum sleep to prevent looping, | |
fb8c4b14 | 543 | allowing socket to clear and app |
e4eb295d SF |
544 | threads to set tcpStatus |
545 | CifsNeedReconnect if server hung*/ | |
46810cbf | 546 | continue; |
e4eb295d | 547 | } else if (length <= 0) { |
fb8c4b14 | 548 | cERROR(1, ("Received no data, expecting %d", |
e4eb295d SF |
549 | pdu_length - total_read)); |
550 | cifs_reconnect(server); | |
551 | csocket = server->ssocket; | |
552 | reconnect = 1; | |
553 | break; | |
46810cbf | 554 | } |
e4eb295d | 555 | } |
fb8c4b14 | 556 | if (reconnect == 2) |
e4eb295d | 557 | break; |
fb8c4b14 | 558 | else if (reconnect == 1) |
e4eb295d | 559 | continue; |
1da177e4 | 560 | |
e4eb295d | 561 | length += 4; /* account for rfc1002 hdr */ |
50c2f753 | 562 | |
09d1db5c | 563 | |
e4eb295d | 564 | dump_smb(smb_buffer, length); |
184ed211 | 565 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 566 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
567 | continue; |
568 | } | |
1da177e4 | 569 | |
e4eb295d SF |
570 | |
571 | task_to_wake = NULL; | |
572 | spin_lock(&GlobalMid_Lock); | |
573 | list_for_each(tmp, &server->pending_mid_q) { | |
574 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
575 | ||
50c2f753 | 576 | if ((mid_entry->mid == smb_buffer->Mid) && |
e4eb295d SF |
577 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && |
578 | (mid_entry->command == smb_buffer->Command)) { | |
fb8c4b14 | 579 | if (check2ndT2(smb_buffer,server->maxBuf) > 0) { |
e4eb295d | 580 | /* We have a multipart transact2 resp */ |
cd63499c | 581 | isMultiRsp = TRUE; |
fb8c4b14 | 582 | if (mid_entry->resp_buf) { |
e4eb295d | 583 | /* merge response - fix up 1st*/ |
50c2f753 | 584 | if (coalesce_t2(smb_buffer, |
e4eb295d | 585 | mid_entry->resp_buf)) { |
3979877e | 586 | mid_entry->multiRsp = 1; |
e4eb295d SF |
587 | break; |
588 | } else { | |
589 | /* all parts received */ | |
3979877e | 590 | mid_entry->multiEnd = 1; |
50c2f753 | 591 | goto multi_t2_fnd; |
e4eb295d SF |
592 | } |
593 | } else { | |
fb8c4b14 | 594 | if (!isLargeBuf) { |
e4eb295d SF |
595 | cERROR(1,("1st trans2 resp needs bigbuf")); |
596 | /* BB maybe we can fix this up, switch | |
50c2f753 | 597 | to already allocated large buffer? */ |
e4eb295d | 598 | } else { |
cd63499c | 599 | /* Have first buffer */ |
e4eb295d SF |
600 | mid_entry->resp_buf = |
601 | smb_buffer; | |
602 | mid_entry->largeBuf = 1; | |
e4eb295d SF |
603 | bigbuf = NULL; |
604 | } | |
605 | } | |
606 | break; | |
50c2f753 | 607 | } |
e4eb295d | 608 | mid_entry->resp_buf = smb_buffer; |
fb8c4b14 | 609 | if (isLargeBuf) |
e4eb295d | 610 | mid_entry->largeBuf = 1; |
46810cbf | 611 | else |
e4eb295d SF |
612 | mid_entry->largeBuf = 0; |
613 | multi_t2_fnd: | |
614 | task_to_wake = mid_entry->tsk; | |
615 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
616 | #ifdef CONFIG_CIFS_STATS2 |
617 | mid_entry->when_received = jiffies; | |
618 | #endif | |
3a5ff61c SF |
619 | /* so we do not time out requests to server |
620 | which is still responding (since server could | |
621 | be busy but not dead) */ | |
622 | server->lstrp = jiffies; | |
e4eb295d | 623 | break; |
46810cbf | 624 | } |
1da177e4 | 625 | } |
e4eb295d SF |
626 | spin_unlock(&GlobalMid_Lock); |
627 | if (task_to_wake) { | |
cd63499c | 628 | /* Was previous buf put in mpx struct for multi-rsp? */ |
fb8c4b14 | 629 | if (!isMultiRsp) { |
cd63499c | 630 | /* smb buffer will be freed by user thread */ |
26f57364 | 631 | if (isLargeBuf) |
cd63499c | 632 | bigbuf = NULL; |
26f57364 | 633 | else |
cd63499c SF |
634 | smallbuf = NULL; |
635 | } | |
e4eb295d | 636 | wake_up_process(task_to_wake); |
d7c8c94d | 637 | } else if ((is_valid_oplock_break(smb_buffer, server) == FALSE) |
50c2f753 SF |
638 | && (isMultiRsp == FALSE)) { |
639 | cERROR(1, ("No task to wake, unknown frame received! " | |
640 | "NumMids %d", midCount.counter)); | |
641 | cifs_dump_mem("Received Data is: ", (char *)smb_buffer, | |
70ca734a | 642 | sizeof(struct smb_hdr)); |
3979877e SF |
643 | #ifdef CONFIG_CIFS_DEBUG2 |
644 | cifs_dump_detail(smb_buffer); | |
645 | cifs_dump_mids(server); | |
646 | #endif /* CIFS_DEBUG2 */ | |
50c2f753 | 647 | |
e4eb295d SF |
648 | } |
649 | } /* end while !EXITING */ | |
650 | ||
1da177e4 LT |
651 | spin_lock(&GlobalMid_Lock); |
652 | server->tcpStatus = CifsExiting; | |
653 | server->tsk = NULL; | |
31ca3bc3 SF |
654 | /* check if we have blocked requests that need to free */ |
655 | /* Note that cifs_max_pending is normally 50, but | |
656 | can be set at module install time to as little as two */ | |
fb8c4b14 | 657 | if (atomic_read(&server->inFlight) >= cifs_max_pending) |
31ca3bc3 SF |
658 | atomic_set(&server->inFlight, cifs_max_pending - 1); |
659 | /* We do not want to set the max_pending too low or we | |
660 | could end up with the counter going negative */ | |
1da177e4 | 661 | spin_unlock(&GlobalMid_Lock); |
50c2f753 | 662 | /* Although there should not be any requests blocked on |
1da177e4 | 663 | this queue it can not hurt to be paranoid and try to wake up requests |
09d1db5c | 664 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
665 | to the same server - they now will see the session is in exit state |
666 | and get out of SendReceive. */ | |
667 | wake_up_all(&server->request_q); | |
668 | /* give those requests time to exit */ | |
b8643e1b | 669 | msleep(125); |
50c2f753 | 670 | |
fb8c4b14 | 671 | if (server->ssocket) { |
1da177e4 LT |
672 | sock_release(csocket); |
673 | server->ssocket = NULL; | |
674 | } | |
b8643e1b | 675 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
a8a11d39 MK |
676 | cifs_buf_release(bigbuf); |
677 | if (smallbuf) /* no sense logging a debug message if NULL */ | |
b8643e1b | 678 | cifs_small_buf_release(smallbuf); |
1da177e4 LT |
679 | |
680 | read_lock(&GlobalSMBSeslock); | |
681 | if (list_empty(&server->pending_mid_q)) { | |
09d1db5c SF |
682 | /* loop through server session structures attached to this and |
683 | mark them dead */ | |
1da177e4 LT |
684 | list_for_each(tmp, &GlobalSMBSessionList) { |
685 | ses = | |
686 | list_entry(tmp, struct cifsSesInfo, | |
687 | cifsSessionList); | |
688 | if (ses->server == server) { | |
689 | ses->status = CifsExiting; | |
690 | ses->server = NULL; | |
691 | } | |
692 | } | |
693 | read_unlock(&GlobalSMBSeslock); | |
694 | } else { | |
31ca3bc3 SF |
695 | /* although we can not zero the server struct pointer yet, |
696 | since there are active requests which may depnd on them, | |
697 | mark the corresponding SMB sessions as exiting too */ | |
698 | list_for_each(tmp, &GlobalSMBSessionList) { | |
699 | ses = list_entry(tmp, struct cifsSesInfo, | |
700 | cifsSessionList); | |
26f57364 | 701 | if (ses->server == server) |
31ca3bc3 | 702 | ses->status = CifsExiting; |
31ca3bc3 SF |
703 | } |
704 | ||
1da177e4 LT |
705 | spin_lock(&GlobalMid_Lock); |
706 | list_for_each(tmp, &server->pending_mid_q) { | |
707 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
708 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
50c2f753 SF |
709 | cFYI(1, ("Clearing Mid 0x%x - waking up ", |
710 | mid_entry->mid)); | |
1da177e4 | 711 | task_to_wake = mid_entry->tsk; |
26f57364 | 712 | if (task_to_wake) |
1da177e4 | 713 | wake_up_process(task_to_wake); |
1da177e4 LT |
714 | } |
715 | } | |
716 | spin_unlock(&GlobalMid_Lock); | |
717 | read_unlock(&GlobalSMBSeslock); | |
1da177e4 | 718 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 719 | msleep(125); |
1da177e4 LT |
720 | } |
721 | ||
f191401f | 722 | if (!list_empty(&server->pending_mid_q)) { |
50c2f753 | 723 | /* mpx threads have not exited yet give them |
1da177e4 | 724 | at least the smb send timeout time for long ops */ |
31ca3bc3 SF |
725 | /* due to delays on oplock break requests, we need |
726 | to wait at least 45 seconds before giving up | |
727 | on a request getting a response and going ahead | |
728 | and killing cifsd */ | |
1da177e4 | 729 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 730 | msleep(46000); |
1da177e4 LT |
731 | /* if threads still have not exited they are probably never |
732 | coming home not much else we can do but free the memory */ | |
733 | } | |
1da177e4 LT |
734 | |
735 | write_lock(&GlobalSMBSeslock); | |
736 | atomic_dec(&tcpSesAllocCount); | |
737 | length = tcpSesAllocCount.counter; | |
31ca3bc3 SF |
738 | |
739 | /* last chance to mark ses pointers invalid | |
740 | if there are any pointing to this (e.g | |
50c2f753 | 741 | if a crazy root user tried to kill cifsd |
31ca3bc3 SF |
742 | kernel thread explicitly this might happen) */ |
743 | list_for_each(tmp, &GlobalSMBSessionList) { | |
744 | ses = list_entry(tmp, struct cifsSesInfo, | |
745 | cifsSessionList); | |
26f57364 | 746 | if (ses->server == server) |
31ca3bc3 | 747 | ses->server = NULL; |
31ca3bc3 | 748 | } |
1da177e4 | 749 | write_unlock(&GlobalSMBSeslock); |
31ca3bc3 SF |
750 | |
751 | kfree(server); | |
26f57364 SF |
752 | if (length > 0) |
753 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, | |
754 | GFP_KERNEL); | |
50c2f753 | 755 | |
1da177e4 LT |
756 | return 0; |
757 | } | |
758 | ||
1da177e4 | 759 | static int |
50c2f753 SF |
760 | cifs_parse_mount_options(char *options, const char *devname, |
761 | struct smb_vol *vol) | |
1da177e4 LT |
762 | { |
763 | char *value; | |
764 | char *data; | |
765 | unsigned int temp_len, i, j; | |
766 | char separator[2]; | |
767 | ||
768 | separator[0] = ','; | |
50c2f753 | 769 | separator[1] = 0; |
1da177e4 | 770 | |
12e36b2f | 771 | if (Local_System_Name[0] != 0) |
50c2f753 | 772 | memcpy(vol->source_rfc1001_name, Local_System_Name, 15); |
2cd646a2 | 773 | else { |
12e36b2f | 774 | char *nodename = utsname()->nodename; |
50c2f753 SF |
775 | int n = strnlen(nodename, 15); |
776 | memset(vol->source_rfc1001_name, 0x20, 15); | |
777 | for (i = 0; i < n; i++) { | |
2cd646a2 SF |
778 | /* does not have to be perfect mapping since field is |
779 | informational, only used for servers that do not support | |
780 | port 445 and it can be overridden at mount time */ | |
12e36b2f | 781 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
2cd646a2 | 782 | } |
1da177e4 LT |
783 | } |
784 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
785 | /* null target name indicates to use *SMBSERVR default called name |
786 | if we end up sending RFC1001 session initialize */ | |
787 | vol->target_rfc1001_name[0] = 0; | |
1da177e4 LT |
788 | vol->linux_uid = current->uid; /* current->euid instead? */ |
789 | vol->linux_gid = current->gid; | |
790 | vol->dir_mode = S_IRWXUGO; | |
791 | /* 2767 perms indicate mandatory locking support */ | |
792 | vol->file_mode = S_IALLUGO & ~(S_ISUID | S_IXGRP); | |
793 | ||
794 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
795 | vol->rw = TRUE; | |
ac67055e JA |
796 | /* default is always to request posix paths. */ |
797 | vol->posix_paths = 1; | |
798 | ||
1da177e4 LT |
799 | if (!options) |
800 | return 1; | |
801 | ||
50c2f753 | 802 | if (strncmp(options, "sep=", 4) == 0) { |
fb8c4b14 | 803 | if (options[4] != 0) { |
1da177e4 LT |
804 | separator[0] = options[4]; |
805 | options += 5; | |
806 | } else { | |
467a8f8d | 807 | cFYI(1, ("Null separator not allowed")); |
1da177e4 LT |
808 | } |
809 | } | |
50c2f753 | 810 | |
1da177e4 LT |
811 | while ((data = strsep(&options, separator)) != NULL) { |
812 | if (!*data) | |
813 | continue; | |
814 | if ((value = strchr(data, '=')) != NULL) | |
815 | *value++ = '\0'; | |
816 | ||
50c2f753 SF |
817 | /* Have to parse this before we parse for "user" */ |
818 | if (strnicmp(data, "user_xattr", 10) == 0) { | |
1da177e4 | 819 | vol->no_xattr = 0; |
50c2f753 | 820 | } else if (strnicmp(data, "nouser_xattr", 12) == 0) { |
1da177e4 LT |
821 | vol->no_xattr = 1; |
822 | } else if (strnicmp(data, "user", 4) == 0) { | |
4b952a9b | 823 | if (!value) { |
1da177e4 LT |
824 | printk(KERN_WARNING |
825 | "CIFS: invalid or missing username\n"); | |
826 | return 1; /* needs_arg; */ | |
fb8c4b14 | 827 | } else if (!*value) { |
4b952a9b SF |
828 | /* null user, ie anonymous, authentication */ |
829 | vol->nullauth = 1; | |
1da177e4 LT |
830 | } |
831 | if (strnlen(value, 200) < 200) { | |
832 | vol->username = value; | |
833 | } else { | |
834 | printk(KERN_WARNING "CIFS: username too long\n"); | |
835 | return 1; | |
836 | } | |
837 | } else if (strnicmp(data, "pass", 4) == 0) { | |
838 | if (!value) { | |
839 | vol->password = NULL; | |
840 | continue; | |
fb8c4b14 | 841 | } else if (value[0] == 0) { |
1da177e4 LT |
842 | /* check if string begins with double comma |
843 | since that would mean the password really | |
844 | does start with a comma, and would not | |
845 | indicate an empty string */ | |
fb8c4b14 | 846 | if (value[1] != separator[0]) { |
1da177e4 LT |
847 | vol->password = NULL; |
848 | continue; | |
849 | } | |
850 | } | |
851 | temp_len = strlen(value); | |
852 | /* removed password length check, NTLM passwords | |
853 | can be arbitrarily long */ | |
854 | ||
50c2f753 | 855 | /* if comma in password, the string will be |
1da177e4 LT |
856 | prematurely null terminated. Commas in password are |
857 | specified across the cifs mount interface by a double | |
858 | comma ie ,, and a comma used as in other cases ie ',' | |
859 | as a parameter delimiter/separator is single and due | |
860 | to the strsep above is temporarily zeroed. */ | |
861 | ||
862 | /* NB: password legally can have multiple commas and | |
863 | the only illegal character in a password is null */ | |
864 | ||
50c2f753 | 865 | if ((value[temp_len] == 0) && |
09d1db5c | 866 | (value[temp_len+1] == separator[0])) { |
1da177e4 LT |
867 | /* reinsert comma */ |
868 | value[temp_len] = separator[0]; | |
50c2f753 SF |
869 | temp_len += 2; /* move after second comma */ |
870 | while (value[temp_len] != 0) { | |
1da177e4 | 871 | if (value[temp_len] == separator[0]) { |
50c2f753 | 872 | if (value[temp_len+1] == |
09d1db5c SF |
873 | separator[0]) { |
874 | /* skip second comma */ | |
875 | temp_len++; | |
50c2f753 | 876 | } else { |
1da177e4 LT |
877 | /* single comma indicating start |
878 | of next parm */ | |
879 | break; | |
880 | } | |
881 | } | |
882 | temp_len++; | |
883 | } | |
fb8c4b14 | 884 | if (value[temp_len] == 0) { |
1da177e4 LT |
885 | options = NULL; |
886 | } else { | |
887 | value[temp_len] = 0; | |
888 | /* point option to start of next parm */ | |
889 | options = value + temp_len + 1; | |
890 | } | |
50c2f753 | 891 | /* go from value to value + temp_len condensing |
1da177e4 LT |
892 | double commas to singles. Note that this ends up |
893 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 894 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
fb8c4b14 | 895 | if (vol->password == NULL) { |
50c2f753 SF |
896 | printk(KERN_WARNING "CIFS: no memory " |
897 | "for password\n"); | |
433dc24f SF |
898 | return 1; |
899 | } | |
50c2f753 | 900 | for (i = 0, j = 0; i < temp_len; i++, j++) { |
1da177e4 | 901 | vol->password[j] = value[i]; |
fb8c4b14 | 902 | if (value[i] == separator[0] |
09d1db5c | 903 | && value[i+1] == separator[0]) { |
1da177e4 LT |
904 | /* skip second comma */ |
905 | i++; | |
906 | } | |
907 | } | |
908 | vol->password[j] = 0; | |
909 | } else { | |
e915fc49 | 910 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
fb8c4b14 | 911 | if (vol->password == NULL) { |
50c2f753 SF |
912 | printk(KERN_WARNING "CIFS: no memory " |
913 | "for password\n"); | |
433dc24f SF |
914 | return 1; |
915 | } | |
1da177e4 LT |
916 | strcpy(vol->password, value); |
917 | } | |
918 | } else if (strnicmp(data, "ip", 2) == 0) { | |
919 | if (!value || !*value) { | |
920 | vol->UNCip = NULL; | |
921 | } else if (strnlen(value, 35) < 35) { | |
922 | vol->UNCip = value; | |
923 | } else { | |
50c2f753 SF |
924 | printk(KERN_WARNING "CIFS: ip address " |
925 | "too long\n"); | |
1da177e4 LT |
926 | return 1; |
927 | } | |
50c2f753 SF |
928 | } else if (strnicmp(data, "sec", 3) == 0) { |
929 | if (!value || !*value) { | |
930 | cERROR(1, ("no security value specified")); | |
931 | continue; | |
932 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
933 | vol->secFlg |= CIFSSEC_MAY_KRB5 | | |
189acaae | 934 | CIFSSEC_MUST_SIGN; |
bf820679 | 935 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
50c2f753 SF |
936 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
937 | CIFSSEC_MAY_KRB5; */ | |
938 | cERROR(1, ("Krb5 cifs privacy not supported")); | |
bf820679 SF |
939 | return 1; |
940 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 941 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
bf820679 | 942 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 943 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 944 | CIFSSEC_MUST_SIGN; |
bf820679 | 945 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 946 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 947 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 948 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 949 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
950 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
951 | /* ntlm is default so can be turned off too */ | |
750d1151 | 952 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 953 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 954 | /* BB is there a better way to do this? */ |
750d1151 | 955 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
956 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
957 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
50c2f753 | 958 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 959 | #endif |
bf820679 | 960 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 961 | vol->nullauth = 1; |
50c2f753 SF |
962 | } else { |
963 | cERROR(1, ("bad security option: %s", value)); | |
964 | return 1; | |
965 | } | |
1da177e4 LT |
966 | } else if ((strnicmp(data, "unc", 3) == 0) |
967 | || (strnicmp(data, "target", 6) == 0) | |
968 | || (strnicmp(data, "path", 4) == 0)) { | |
969 | if (!value || !*value) { | |
50c2f753 SF |
970 | printk(KERN_WARNING "CIFS: invalid path to " |
971 | "network resource\n"); | |
1da177e4 LT |
972 | return 1; /* needs_arg; */ |
973 | } | |
974 | if ((temp_len = strnlen(value, 300)) < 300) { | |
50c2f753 | 975 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 976 | if (vol->UNC == NULL) |
1da177e4 | 977 | return 1; |
50c2f753 | 978 | strcpy(vol->UNC, value); |
1da177e4 LT |
979 | if (strncmp(vol->UNC, "//", 2) == 0) { |
980 | vol->UNC[0] = '\\'; | |
981 | vol->UNC[1] = '\\'; | |
50c2f753 | 982 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
1da177e4 | 983 | printk(KERN_WARNING |
50c2f753 SF |
984 | "CIFS: UNC Path does not begin " |
985 | "with // or \\\\ \n"); | |
1da177e4 LT |
986 | return 1; |
987 | } | |
988 | } else { | |
989 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
990 | return 1; | |
991 | } | |
992 | } else if ((strnicmp(data, "domain", 3) == 0) | |
993 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
994 | if (!value || !*value) { | |
995 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
996 | return 1; /* needs_arg; */ | |
997 | } | |
998 | /* BB are there cases in which a comma can be valid in | |
999 | a domain name and need special handling? */ | |
3979877e | 1000 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
1001 | vol->domainname = value; |
1002 | cFYI(1, ("Domain name set")); | |
1003 | } else { | |
50c2f753 SF |
1004 | printk(KERN_WARNING "CIFS: domain name too " |
1005 | "long\n"); | |
1da177e4 LT |
1006 | return 1; |
1007 | } | |
50c2f753 SF |
1008 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
1009 | if (!value || !*value) { | |
1010 | printk(KERN_WARNING | |
1011 | "CIFS: invalid path prefix\n"); | |
1012 | return 1; /* needs_argument */ | |
1013 | } | |
1014 | if ((temp_len = strnlen(value, 1024)) < 1024) { | |
4523cc30 | 1015 | if (value[0] != '/') |
2fe87f02 | 1016 | temp_len++; /* missing leading slash */ |
50c2f753 SF |
1017 | vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); |
1018 | if (vol->prepath == NULL) | |
1019 | return 1; | |
4523cc30 | 1020 | if (value[0] != '/') { |
2fe87f02 | 1021 | vol->prepath[0] = '/'; |
50c2f753 | 1022 | strcpy(vol->prepath+1, value); |
2fe87f02 | 1023 | } else |
50c2f753 SF |
1024 | strcpy(vol->prepath, value); |
1025 | cFYI(1, ("prefix path %s", vol->prepath)); | |
1026 | } else { | |
1027 | printk(KERN_WARNING "CIFS: prefix too long\n"); | |
1028 | return 1; | |
1029 | } | |
1da177e4 LT |
1030 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
1031 | if (!value || !*value) { | |
63135e08 SF |
1032 | printk(KERN_WARNING "CIFS: invalid iocharset " |
1033 | "specified\n"); | |
1da177e4 LT |
1034 | return 1; /* needs_arg; */ |
1035 | } | |
1036 | if (strnlen(value, 65) < 65) { | |
50c2f753 | 1037 | if (strnicmp(value, "default", 7)) |
1da177e4 | 1038 | vol->iocharset = value; |
50c2f753 SF |
1039 | /* if iocharset not set then load_nls_default |
1040 | is used by caller */ | |
1041 | cFYI(1, ("iocharset set to %s", value)); | |
1da177e4 | 1042 | } else { |
63135e08 SF |
1043 | printk(KERN_WARNING "CIFS: iocharset name " |
1044 | "too long.\n"); | |
1da177e4 LT |
1045 | return 1; |
1046 | } | |
1047 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1048 | if (value && *value) { | |
1049 | vol->linux_uid = | |
1050 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1051 | vol->override_uid = 1; |
1da177e4 LT |
1052 | } |
1053 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1054 | if (value && *value) { | |
1055 | vol->linux_gid = | |
1056 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1057 | vol->override_gid = 1; |
1da177e4 LT |
1058 | } |
1059 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1060 | if (value && *value) { | |
1061 | vol->file_mode = | |
1062 | simple_strtoul(value, &value, 0); | |
1063 | } | |
1064 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1065 | if (value && *value) { | |
1066 | vol->dir_mode = | |
1067 | simple_strtoul(value, &value, 0); | |
1068 | } | |
1069 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1070 | if (value && *value) { | |
1071 | vol->dir_mode = | |
1072 | simple_strtoul(value, &value, 0); | |
1073 | } | |
1074 | } else if (strnicmp(data, "port", 4) == 0) { | |
1075 | if (value && *value) { | |
1076 | vol->port = | |
1077 | simple_strtoul(value, &value, 0); | |
1078 | } | |
1079 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1080 | if (value && *value) { | |
1081 | vol->rsize = | |
1082 | simple_strtoul(value, &value, 0); | |
1083 | } | |
1084 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1085 | if (value && *value) { | |
1086 | vol->wsize = | |
1087 | simple_strtoul(value, &value, 0); | |
1088 | } | |
1089 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1090 | if (value && *value) { | |
1091 | vol->sockopt = | |
1092 | simple_strtoul(value, &value, 0); | |
1093 | } | |
1094 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1095 | if (!value || !*value || (*value == ' ')) { | |
63135e08 | 1096 | cFYI(1, ("invalid (empty) netbiosname")); |
1da177e4 | 1097 | } else { |
50c2f753 SF |
1098 | memset(vol->source_rfc1001_name, 0x20, 15); |
1099 | for (i = 0; i < 15; i++) { | |
1100 | /* BB are there cases in which a comma can be | |
1da177e4 LT |
1101 | valid in this workstation netbios name (and need |
1102 | special handling)? */ | |
1103 | ||
1104 | /* We do not uppercase netbiosname for user */ | |
50c2f753 | 1105 | if (value[i] == 0) |
1da177e4 | 1106 | break; |
50c2f753 SF |
1107 | else |
1108 | vol->source_rfc1001_name[i] = | |
1109 | value[i]; | |
1da177e4 LT |
1110 | } |
1111 | /* The string has 16th byte zero still from | |
1112 | set at top of the function */ | |
50c2f753 SF |
1113 | if ((i == 15) && (value[i] != 0)) |
1114 | printk(KERN_WARNING "CIFS: netbiosname" | |
1115 | " longer than 15 truncated.\n"); | |
a10faeb2 SF |
1116 | } |
1117 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1118 | /* servernetbiosname specified override *SMBSERVER */ | |
1119 | if (!value || !*value || (*value == ' ')) { | |
467a8f8d | 1120 | cFYI(1, ("empty server netbiosname specified")); |
a10faeb2 SF |
1121 | } else { |
1122 | /* last byte, type, is 0x20 for servr type */ | |
50c2f753 | 1123 | memset(vol->target_rfc1001_name, 0x20, 16); |
a10faeb2 | 1124 | |
50c2f753 | 1125 | for (i = 0; i < 15; i++) { |
a10faeb2 | 1126 | /* BB are there cases in which a comma can be |
50c2f753 SF |
1127 | valid in this workstation netbios name |
1128 | (and need special handling)? */ | |
a10faeb2 | 1129 | |
50c2f753 SF |
1130 | /* user or mount helper must uppercase |
1131 | the netbiosname */ | |
1132 | if (value[i] == 0) | |
a10faeb2 SF |
1133 | break; |
1134 | else | |
50c2f753 SF |
1135 | vol->target_rfc1001_name[i] = |
1136 | value[i]; | |
a10faeb2 SF |
1137 | } |
1138 | /* The string has 16th byte zero still from | |
1139 | set at top of the function */ | |
50c2f753 SF |
1140 | if ((i == 15) && (value[i] != 0)) |
1141 | printk(KERN_WARNING "CIFS: server net" | |
1142 | "biosname longer than 15 truncated.\n"); | |
1da177e4 LT |
1143 | } |
1144 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1145 | /* ignore */ | |
1146 | } else if (strnicmp(data, "version", 3) == 0) { | |
1147 | /* ignore */ | |
50c2f753 | 1148 | } else if (strnicmp(data, "guest", 5) == 0) { |
1da177e4 LT |
1149 | /* ignore */ |
1150 | } else if (strnicmp(data, "rw", 2) == 0) { | |
1151 | vol->rw = TRUE; | |
1152 | } else if ((strnicmp(data, "suid", 4) == 0) || | |
1153 | (strnicmp(data, "nosuid", 6) == 0) || | |
1154 | (strnicmp(data, "exec", 4) == 0) || | |
1155 | (strnicmp(data, "noexec", 6) == 0) || | |
1156 | (strnicmp(data, "nodev", 5) == 0) || | |
1157 | (strnicmp(data, "noauto", 6) == 0) || | |
1158 | (strnicmp(data, "dev", 3) == 0)) { | |
1159 | /* The mount tool or mount.cifs helper (if present) | |
50c2f753 SF |
1160 | uses these opts to set flags, and the flags are read |
1161 | by the kernel vfs layer before we get here (ie | |
1162 | before read super) so there is no point trying to | |
1163 | parse these options again and set anything and it | |
1164 | is ok to just ignore them */ | |
1da177e4 LT |
1165 | continue; |
1166 | } else if (strnicmp(data, "ro", 2) == 0) { | |
1167 | vol->rw = FALSE; | |
1168 | } else if (strnicmp(data, "hard", 4) == 0) { | |
1169 | vol->retry = 1; | |
1170 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1171 | vol->retry = 0; | |
1172 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1173 | vol->noperm = 0; | |
1174 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1175 | vol->noperm = 1; | |
6a0b4824 SF |
1176 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1177 | vol->remap = 1; | |
1178 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1179 | vol->remap = 0; | |
50c2f753 SF |
1180 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1181 | vol->sfu_emul = 1; | |
1182 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1183 | vol->sfu_emul = 0; | |
ac67055e JA |
1184 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1185 | vol->posix_paths = 1; | |
1186 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1187 | vol->posix_paths = 0; | |
c18c842b SF |
1188 | } else if (strnicmp(data, "nounix", 6) == 0) { |
1189 | vol->no_linux_ext = 1; | |
1190 | } else if (strnicmp(data, "nolinux", 7) == 0) { | |
1191 | vol->no_linux_ext = 1; | |
50c2f753 | 1192 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
a10faeb2 | 1193 | (strnicmp(data, "ignorecase", 10) == 0)) { |
50c2f753 | 1194 | vol->nocase = 1; |
c46fa8ac SF |
1195 | } else if (strnicmp(data, "brl", 3) == 0) { |
1196 | vol->nobrl = 0; | |
50c2f753 | 1197 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1198 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1199 | vol->nobrl = 1; |
d3485d37 SF |
1200 | /* turn off mandatory locking in mode |
1201 | if remote locking is turned off since the | |
1202 | local vfs will do advisory */ | |
50c2f753 SF |
1203 | if (vol->file_mode == |
1204 | (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
d3485d37 | 1205 | vol->file_mode = S_IALLUGO; |
1da177e4 LT |
1206 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1207 | vol->setuids = 1; | |
1208 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1209 | vol->setuids = 0; | |
1210 | } else if (strnicmp(data, "nohard", 6) == 0) { | |
1211 | vol->retry = 0; | |
1212 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1213 | vol->retry = 1; | |
1214 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1215 | vol->intr = 0; | |
1216 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1217 | vol->intr = 1; | |
50c2f753 | 1218 | } else if (strnicmp(data, "serverino", 7) == 0) { |
1da177e4 | 1219 | vol->server_ino = 1; |
50c2f753 | 1220 | } else if (strnicmp(data, "noserverino", 9) == 0) { |
1da177e4 | 1221 | vol->server_ino = 0; |
50c2f753 | 1222 | } else if (strnicmp(data, "cifsacl", 7) == 0) { |
0a4b92c0 SF |
1223 | vol->cifs_acl = 1; |
1224 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1225 | vol->cifs_acl = 0; | |
50c2f753 | 1226 | } else if (strnicmp(data, "acl", 3) == 0) { |
1da177e4 | 1227 | vol->no_psx_acl = 0; |
50c2f753 | 1228 | } else if (strnicmp(data, "noacl", 5) == 0) { |
1da177e4 | 1229 | vol->no_psx_acl = 1; |
50c2f753 | 1230 | } else if (strnicmp(data, "sign", 4) == 0) { |
750d1151 SF |
1231 | vol->secFlg |= CIFSSEC_MUST_SIGN; |
1232 | /* } else if (strnicmp(data, "seal",4) == 0) { | |
1233 | vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
50c2f753 | 1234 | } else if (strnicmp(data, "direct", 6) == 0) { |
1da177e4 | 1235 | vol->direct_io = 1; |
50c2f753 | 1236 | } else if (strnicmp(data, "forcedirectio", 13) == 0) { |
1da177e4 | 1237 | vol->direct_io = 1; |
50c2f753 | 1238 | } else if (strnicmp(data, "in6_addr", 8) == 0) { |
1da177e4 LT |
1239 | if (!value || !*value) { |
1240 | vol->in6_addr = NULL; | |
1241 | } else if (strnlen(value, 49) == 48) { | |
1242 | vol->in6_addr = value; | |
1243 | } else { | |
50c2f753 SF |
1244 | printk(KERN_WARNING "CIFS: ip v6 address not " |
1245 | "48 characters long\n"); | |
1da177e4 LT |
1246 | return 1; |
1247 | } | |
1248 | } else if (strnicmp(data, "noac", 4) == 0) { | |
50c2f753 SF |
1249 | printk(KERN_WARNING "CIFS: Mount option noac not " |
1250 | "supported. Instead set " | |
1251 | "/proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1da177e4 | 1252 | } else |
50c2f753 SF |
1253 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n", |
1254 | data); | |
1da177e4 LT |
1255 | } |
1256 | if (vol->UNC == NULL) { | |
4523cc30 | 1257 | if (devname == NULL) { |
50c2f753 SF |
1258 | printk(KERN_WARNING "CIFS: Missing UNC name for mount " |
1259 | "target\n"); | |
1da177e4 LT |
1260 | return 1; |
1261 | } | |
1262 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
50c2f753 | 1263 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1264 | if (vol->UNC == NULL) |
1da177e4 | 1265 | return 1; |
50c2f753 | 1266 | strcpy(vol->UNC, devname); |
1da177e4 LT |
1267 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1268 | vol->UNC[0] = '\\'; | |
1269 | vol->UNC[1] = '\\'; | |
1270 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
50c2f753 SF |
1271 | printk(KERN_WARNING "CIFS: UNC Path does not " |
1272 | "begin with // or \\\\ \n"); | |
1da177e4 LT |
1273 | return 1; |
1274 | } | |
1275 | } else { | |
1276 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1277 | return 1; | |
1278 | } | |
1279 | } | |
fb8c4b14 | 1280 | if (vol->UNCip == NULL) |
1da177e4 LT |
1281 | vol->UNCip = &vol->UNC[2]; |
1282 | ||
1283 | return 0; | |
1284 | } | |
1285 | ||
1286 | static struct cifsSesInfo * | |
50c2f753 | 1287 | cifs_find_tcp_session(struct in_addr *target_ip_addr, |
1da177e4 LT |
1288 | struct in6_addr *target_ip6_addr, |
1289 | char *userName, struct TCP_Server_Info **psrvTcp) | |
1290 | { | |
1291 | struct list_head *tmp; | |
1292 | struct cifsSesInfo *ses; | |
1293 | *psrvTcp = NULL; | |
1294 | read_lock(&GlobalSMBSeslock); | |
1295 | ||
1296 | list_for_each(tmp, &GlobalSMBSessionList) { | |
1297 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
1298 | if (ses->server) { | |
50c2f753 | 1299 | if ((target_ip_addr && |
1da177e4 LT |
1300 | (ses->server->addr.sockAddr.sin_addr.s_addr |
1301 | == target_ip_addr->s_addr)) || (target_ip6_addr | |
1302 | && memcmp(&ses->server->addr.sockAddr6.sin6_addr, | |
50c2f753 SF |
1303 | target_ip6_addr, sizeof(*target_ip6_addr)))) { |
1304 | /* BB lock server and tcp session and increment | |
1305 | use count here?? */ | |
1306 | ||
1307 | /* found a match on the TCP session */ | |
1308 | *psrvTcp = ses->server; | |
1309 | ||
1da177e4 LT |
1310 | /* BB check if reconnection needed */ |
1311 | if (strncmp | |
1312 | (ses->userName, userName, | |
1313 | MAX_USERNAME_SIZE) == 0){ | |
1314 | read_unlock(&GlobalSMBSeslock); | |
50c2f753 SF |
1315 | /* Found exact match on both TCP and |
1316 | SMB sessions */ | |
1317 | return ses; | |
1da177e4 LT |
1318 | } |
1319 | } | |
1320 | } | |
1321 | /* else tcp and smb sessions need reconnection */ | |
1322 | } | |
1323 | read_unlock(&GlobalSMBSeslock); | |
1324 | return NULL; | |
1325 | } | |
1326 | ||
1327 | static struct cifsTconInfo * | |
1328 | find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) | |
1329 | { | |
1330 | struct list_head *tmp; | |
1331 | struct cifsTconInfo *tcon; | |
1332 | ||
1333 | read_lock(&GlobalSMBSeslock); | |
1334 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
e466e487 | 1335 | cFYI(1, ("Next tcon")); |
1da177e4 LT |
1336 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); |
1337 | if (tcon->ses) { | |
1338 | if (tcon->ses->server) { | |
1339 | cFYI(1, | |
e466e487 | 1340 | ("old ip addr: %x == new ip %x ?", |
1da177e4 LT |
1341 | tcon->ses->server->addr.sockAddr.sin_addr. |
1342 | s_addr, new_target_ip_addr)); | |
1343 | if (tcon->ses->server->addr.sockAddr.sin_addr. | |
1344 | s_addr == new_target_ip_addr) { | |
e466e487 | 1345 | /* BB lock tcon, server and tcp session and increment use count here? */ |
1da177e4 LT |
1346 | /* found a match on the TCP session */ |
1347 | /* BB check if reconnection needed */ | |
50c2f753 SF |
1348 | cFYI(1, |
1349 | ("IP match, old UNC: %s new: %s", | |
1da177e4 LT |
1350 | tcon->treeName, uncName)); |
1351 | if (strncmp | |
1352 | (tcon->treeName, uncName, | |
1353 | MAX_TREE_SIZE) == 0) { | |
1354 | cFYI(1, | |
e466e487 | 1355 | ("and old usr: %s new: %s", |
1da177e4 LT |
1356 | tcon->treeName, uncName)); |
1357 | if (strncmp | |
1358 | (tcon->ses->userName, | |
1359 | userName, | |
1360 | MAX_USERNAME_SIZE) == 0) { | |
1361 | read_unlock(&GlobalSMBSeslock); | |
e466e487 SF |
1362 | /* matched smb session |
1363 | (user name */ | |
1364 | return tcon; | |
1da177e4 LT |
1365 | } |
1366 | } | |
1367 | } | |
1368 | } | |
1369 | } | |
1370 | } | |
1371 | read_unlock(&GlobalSMBSeslock); | |
1372 | return NULL; | |
1373 | } | |
1374 | ||
1375 | int | |
1376 | connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo, | |
737b758c SF |
1377 | const char *old_path, const struct nls_table *nls_codepage, |
1378 | int remap) | |
1da177e4 LT |
1379 | { |
1380 | unsigned char *referrals = NULL; | |
1381 | unsigned int num_referrals; | |
1382 | int rc = 0; | |
1383 | ||
50c2f753 | 1384 | rc = get_dfs_path(xid, pSesInfo, old_path, nls_codepage, |
737b758c | 1385 | &num_referrals, &referrals, remap); |
1da177e4 LT |
1386 | |
1387 | /* BB Add in code to: if valid refrl, if not ip address contact | |
50c2f753 | 1388 | the helper that resolves tcp names, mount to it, try to |
1da177e4 LT |
1389 | tcon to it unmount it if fail */ |
1390 | ||
f99d49ad | 1391 | kfree(referrals); |
1da177e4 LT |
1392 | |
1393 | return rc; | |
1394 | } | |
1395 | ||
1396 | int | |
50c2f753 SF |
1397 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, |
1398 | const struct nls_table *nls_codepage, unsigned int *pnum_referrals, | |
1399 | unsigned char **preferrals, int remap) | |
1da177e4 LT |
1400 | { |
1401 | char *temp_unc; | |
1402 | int rc = 0; | |
1403 | ||
1404 | *pnum_referrals = 0; | |
1405 | ||
1406 | if (pSesInfo->ipc_tid == 0) { | |
1407 | temp_unc = kmalloc(2 /* for slashes */ + | |
50c2f753 SF |
1408 | strnlen(pSesInfo->serverName, |
1409 | SERVER_NAME_LEN_WITH_NULL * 2) | |
1da177e4 LT |
1410 | + 1 + 4 /* slash IPC$ */ + 2, |
1411 | GFP_KERNEL); | |
1412 | if (temp_unc == NULL) | |
1413 | return -ENOMEM; | |
1414 | temp_unc[0] = '\\'; | |
1415 | temp_unc[1] = '\\'; | |
1416 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1417 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1418 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1419 | cFYI(1, | |
50c2f753 | 1420 | ("CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid)); |
1da177e4 LT |
1421 | kfree(temp_unc); |
1422 | } | |
1423 | if (rc == 0) | |
1424 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, | |
737b758c | 1425 | pnum_referrals, nls_codepage, remap); |
1da177e4 LT |
1426 | |
1427 | return rc; | |
1428 | } | |
1429 | ||
1430 | /* See RFC1001 section 14 on representation of Netbios names */ | |
50c2f753 | 1431 | static void rfc1002mangle(char *target, char *source, unsigned int length) |
1da177e4 | 1432 | { |
50c2f753 | 1433 | unsigned int i, j; |
1da177e4 | 1434 | |
50c2f753 | 1435 | for (i = 0, j = 0; i < (length); i++) { |
1da177e4 LT |
1436 | /* mask a nibble at a time and encode */ |
1437 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1438 | target[j+1] = 'A' + (0x0F & source[i]); | |
50c2f753 | 1439 | j += 2; |
1da177e4 LT |
1440 | } |
1441 | ||
1442 | } | |
1443 | ||
1444 | ||
1445 | static int | |
50c2f753 SF |
1446 | ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, |
1447 | char *netbios_name, char *target_name) | |
1da177e4 LT |
1448 | { |
1449 | int rc = 0; | |
1450 | int connected = 0; | |
1451 | __be16 orig_port = 0; | |
1452 | ||
fb8c4b14 | 1453 | if (*csocket == NULL) { |
50c2f753 SF |
1454 | rc = sock_create_kern(PF_INET, SOCK_STREAM, |
1455 | IPPROTO_TCP, csocket); | |
1da177e4 | 1456 | if (rc < 0) { |
50c2f753 | 1457 | cERROR(1, ("Error %d creating socket", rc)); |
1da177e4 LT |
1458 | *csocket = NULL; |
1459 | return rc; | |
1460 | } else { | |
1461 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
467a8f8d | 1462 | cFYI(1, ("Socket created")); |
50c2f753 | 1463 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
1da177e4 LT |
1464 | } |
1465 | } | |
1466 | ||
1467 | psin_server->sin_family = AF_INET; | |
fb8c4b14 | 1468 | if (psin_server->sin_port) { /* user overrode default port */ |
1da177e4 LT |
1469 | rc = (*csocket)->ops->connect(*csocket, |
1470 | (struct sockaddr *) psin_server, | |
50c2f753 | 1471 | sizeof (struct sockaddr_in), 0); |
1da177e4 LT |
1472 | if (rc >= 0) |
1473 | connected = 1; | |
50c2f753 | 1474 | } |
1da177e4 | 1475 | |
fb8c4b14 | 1476 | if (!connected) { |
50c2f753 | 1477 | /* save original port so we can retry user specified port |
1da177e4 LT |
1478 | later if fall back ports fail this time */ |
1479 | orig_port = psin_server->sin_port; | |
1480 | ||
1481 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1482 | if (psin_server->sin_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1483 | psin_server->sin_port = htons(CIFS_PORT); |
1484 | ||
1485 | rc = (*csocket)->ops->connect(*csocket, | |
1486 | (struct sockaddr *) psin_server, | |
50c2f753 | 1487 | sizeof (struct sockaddr_in), 0); |
1da177e4 LT |
1488 | if (rc >= 0) |
1489 | connected = 1; | |
1490 | } | |
1491 | } | |
1492 | if (!connected) { | |
1493 | psin_server->sin_port = htons(RFC1001_PORT); | |
1494 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
50c2f753 SF |
1495 | psin_server, |
1496 | sizeof (struct sockaddr_in), 0); | |
1497 | if (rc >= 0) | |
1da177e4 LT |
1498 | connected = 1; |
1499 | } | |
1500 | ||
1501 | /* give up here - unless we want to retry on different | |
1502 | protocol families some day */ | |
1503 | if (!connected) { | |
fb8c4b14 | 1504 | if (orig_port) |
1da177e4 | 1505 | psin_server->sin_port = orig_port; |
50c2f753 | 1506 | cFYI(1, ("Error %d connecting to server via ipv4", rc)); |
1da177e4 LT |
1507 | sock_release(*csocket); |
1508 | *csocket = NULL; | |
1509 | return rc; | |
1510 | } | |
50c2f753 SF |
1511 | /* Eventually check for other socket options to change from |
1512 | the default. sock_setsockopt not used because it expects | |
1da177e4 | 1513 | user space buffer */ |
50c2f753 SF |
1514 | cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", |
1515 | (*csocket)->sk->sk_sndbuf, | |
b387eaeb | 1516 | (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo)); |
1da177e4 | 1517 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; |
b387eaeb | 1518 | /* make the bufsizes depend on wsize/rsize and max requests */ |
fb8c4b14 | 1519 | if ((*csocket)->sk->sk_sndbuf < (200 * 1024)) |
b387eaeb | 1520 | (*csocket)->sk->sk_sndbuf = 200 * 1024; |
fb8c4b14 | 1521 | if ((*csocket)->sk->sk_rcvbuf < (140 * 1024)) |
b387eaeb | 1522 | (*csocket)->sk->sk_rcvbuf = 140 * 1024; |
1da177e4 LT |
1523 | |
1524 | /* send RFC1001 sessinit */ | |
fb8c4b14 | 1525 | if (psin_server->sin_port == htons(RFC1001_PORT)) { |
1da177e4 | 1526 | /* some servers require RFC1001 sessinit before sending |
50c2f753 | 1527 | negprot - BB check reconnection in case where second |
1da177e4 | 1528 | sessinit is sent but no second negprot */ |
50c2f753 SF |
1529 | struct rfc1002_session_packet *ses_init_buf; |
1530 | struct smb_hdr *smb_buf; | |
1531 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), | |
1532 | GFP_KERNEL); | |
fb8c4b14 | 1533 | if (ses_init_buf) { |
1da177e4 | 1534 | ses_init_buf->trailer.session_req.called_len = 32; |
fb8c4b14 | 1535 | if (target_name && (target_name[0] != 0)) { |
a10faeb2 SF |
1536 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, |
1537 | target_name, 16); | |
1538 | } else { | |
1539 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
50c2f753 | 1540 | DEFAULT_CIFS_CALLED_NAME, 16); |
a10faeb2 SF |
1541 | } |
1542 | ||
1da177e4 LT |
1543 | ses_init_buf->trailer.session_req.calling_len = 32; |
1544 | /* calling name ends in null (byte 16) from old smb | |
1545 | convention. */ | |
50c2f753 | 1546 | if (netbios_name && (netbios_name[0] != 0)) { |
1da177e4 | 1547 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, |
50c2f753 | 1548 | netbios_name, 16); |
1da177e4 LT |
1549 | } else { |
1550 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
50c2f753 | 1551 | "LINUX_CIFS_CLNT", 16); |
1da177e4 LT |
1552 | } |
1553 | ses_init_buf->trailer.session_req.scope1 = 0; | |
1554 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1555 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1556 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1557 | smb_buf->smb_buf_length = 0x81000044; | |
1558 | rc = smb_send(*csocket, smb_buf, 0x44, | |
1559 | (struct sockaddr *)psin_server); | |
1560 | kfree(ses_init_buf); | |
50c2f753 | 1561 | msleep(1); /* RFC1001 layer in at least one server |
083d3a2c SF |
1562 | requires very short break before negprot |
1563 | presumably because not expecting negprot | |
1564 | to follow so fast. This is a simple | |
50c2f753 | 1565 | solution that works without |
083d3a2c SF |
1566 | complicating the code and causes no |
1567 | significant slowing down on mount | |
1568 | for everyone else */ | |
1da177e4 | 1569 | } |
50c2f753 | 1570 | /* else the negprot may still work without this |
1da177e4 | 1571 | even though malloc failed */ |
50c2f753 | 1572 | |
1da177e4 | 1573 | } |
50c2f753 | 1574 | |
1da177e4 LT |
1575 | return rc; |
1576 | } | |
1577 | ||
1578 | static int | |
1579 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket) | |
1580 | { | |
1581 | int rc = 0; | |
1582 | int connected = 0; | |
1583 | __be16 orig_port = 0; | |
1584 | ||
fb8c4b14 | 1585 | if (*csocket == NULL) { |
50c2f753 SF |
1586 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, |
1587 | IPPROTO_TCP, csocket); | |
1da177e4 | 1588 | if (rc < 0) { |
50c2f753 | 1589 | cERROR(1, ("Error %d creating ipv6 socket", rc)); |
1da177e4 LT |
1590 | *csocket = NULL; |
1591 | return rc; | |
1592 | } else { | |
1593 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
fb8c4b14 | 1594 | cFYI(1, ("ipv6 Socket created")); |
1da177e4 LT |
1595 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
1596 | } | |
1597 | } | |
1598 | ||
1599 | psin_server->sin6_family = AF_INET6; | |
1600 | ||
fb8c4b14 | 1601 | if (psin_server->sin6_port) { /* user overrode default port */ |
1da177e4 LT |
1602 | rc = (*csocket)->ops->connect(*csocket, |
1603 | (struct sockaddr *) psin_server, | |
50c2f753 | 1604 | sizeof (struct sockaddr_in6), 0); |
1da177e4 LT |
1605 | if (rc >= 0) |
1606 | connected = 1; | |
50c2f753 | 1607 | } |
1da177e4 | 1608 | |
fb8c4b14 | 1609 | if (!connected) { |
50c2f753 | 1610 | /* save original port so we can retry user specified port |
1da177e4 LT |
1611 | later if fall back ports fail this time */ |
1612 | ||
1613 | orig_port = psin_server->sin6_port; | |
1614 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1615 | if (psin_server->sin6_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1616 | psin_server->sin6_port = htons(CIFS_PORT); |
1617 | ||
1618 | rc = (*csocket)->ops->connect(*csocket, | |
1619 | (struct sockaddr *) psin_server, | |
50c2f753 | 1620 | sizeof (struct sockaddr_in6), 0); |
1da177e4 LT |
1621 | if (rc >= 0) |
1622 | connected = 1; | |
1623 | } | |
1624 | } | |
1625 | if (!connected) { | |
1626 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1627 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
50c2f753 SF |
1628 | psin_server, sizeof (struct sockaddr_in6), 0); |
1629 | if (rc >= 0) | |
1da177e4 LT |
1630 | connected = 1; |
1631 | } | |
1632 | ||
1633 | /* give up here - unless we want to retry on different | |
1634 | protocol families some day */ | |
1635 | if (!connected) { | |
fb8c4b14 | 1636 | if (orig_port) |
1da177e4 | 1637 | psin_server->sin6_port = orig_port; |
50c2f753 | 1638 | cFYI(1, ("Error %d connecting to server via ipv6", rc)); |
1da177e4 LT |
1639 | sock_release(*csocket); |
1640 | *csocket = NULL; | |
1641 | return rc; | |
1642 | } | |
50c2f753 SF |
1643 | /* Eventually check for other socket options to change from |
1644 | the default. sock_setsockopt not used because it expects | |
1da177e4 LT |
1645 | user space buffer */ |
1646 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
50c2f753 | 1647 | |
1da177e4 LT |
1648 | return rc; |
1649 | } | |
1650 | ||
50c2f753 SF |
1651 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon, |
1652 | struct super_block *sb, struct smb_vol *vol_info) | |
8af18971 SF |
1653 | { |
1654 | /* if we are reconnecting then should we check to see if | |
1655 | * any requested capabilities changed locally e.g. via | |
1656 | * remount but we can not do much about it here | |
1657 | * if they have (even if we could detect it by the following) | |
1658 | * Perhaps we could add a backpointer to array of sb from tcon | |
1659 | * or if we change to make all sb to same share the same | |
1660 | * sb as NFS - then we only have one backpointer to sb. | |
1661 | * What if we wanted to mount the server share twice once with | |
1662 | * and once without posixacls or posix paths? */ | |
1663 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
50c2f753 | 1664 | |
c18c842b SF |
1665 | if (vol_info && vol_info->no_linux_ext) { |
1666 | tcon->fsUnixInfo.Capability = 0; | |
1667 | tcon->unix_ext = 0; /* Unix Extensions disabled */ | |
1668 | cFYI(1, ("Linux protocol extensions disabled")); | |
1669 | return; | |
1670 | } else if (vol_info) | |
1671 | tcon->unix_ext = 1; /* Unix Extensions supported */ | |
1672 | ||
1673 | if (tcon->unix_ext == 0) { | |
1674 | cFYI(1, ("Unix extensions disabled so not set on reconnect")); | |
1675 | return; | |
1676 | } | |
50c2f753 | 1677 | |
fb8c4b14 | 1678 | if (!CIFSSMBQFSUnixInfo(xid, tcon)) { |
8af18971 | 1679 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
50c2f753 | 1680 | |
8af18971 SF |
1681 | /* check for reconnect case in which we do not |
1682 | want to change the mount behavior if we can avoid it */ | |
fb8c4b14 | 1683 | if (vol_info == NULL) { |
50c2f753 | 1684 | /* turn off POSIX ACL and PATHNAMES if not set |
8af18971 SF |
1685 | originally at mount time */ |
1686 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) | |
1687 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
1688 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) | |
1689 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; | |
8af18971 | 1690 | } |
50c2f753 | 1691 | |
8af18971 | 1692 | cap &= CIFS_UNIX_CAP_MASK; |
75865f8c | 1693 | if (vol_info && vol_info->no_psx_acl) |
8af18971 | 1694 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
75865f8c | 1695 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
fb8c4b14 SF |
1696 | cFYI(1, ("negotiated posix acl support")); |
1697 | if (sb) | |
8af18971 SF |
1698 | sb->s_flags |= MS_POSIXACL; |
1699 | } | |
1700 | ||
75865f8c | 1701 | if (vol_info && vol_info->posix_paths == 0) |
8af18971 | 1702 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
75865f8c | 1703 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
fb8c4b14 | 1704 | cFYI(1, ("negotiate posix pathnames")); |
75865f8c | 1705 | if (sb) |
50c2f753 | 1706 | CIFS_SB(sb)->mnt_cifs_flags |= |
8af18971 SF |
1707 | CIFS_MOUNT_POSIX_PATHS; |
1708 | } | |
50c2f753 | 1709 | |
984acfe1 SF |
1710 | /* We might be setting the path sep back to a different |
1711 | form if we are reconnecting and the server switched its | |
50c2f753 | 1712 | posix path capability for this share */ |
75865f8c | 1713 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
984acfe1 | 1714 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
75865f8c SF |
1715 | |
1716 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { | |
1717 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { | |
1718 | CIFS_SB(sb)->rsize = 127 * 1024; | |
1719 | #ifdef CONFIG_CIFS_DEBUG2 | |
fb8c4b14 | 1720 | cFYI(1, ("larger reads not supported by srv")); |
75865f8c SF |
1721 | #endif |
1722 | } | |
1723 | } | |
50c2f753 SF |
1724 | |
1725 | ||
1726 | cFYI(1, ("Negotiate caps 0x%x", (int)cap)); | |
8af18971 | 1727 | #ifdef CONFIG_CIFS_DEBUG2 |
75865f8c | 1728 | if (cap & CIFS_UNIX_FCNTL_CAP) |
fb8c4b14 | 1729 | cFYI(1, ("FCNTL cap")); |
75865f8c | 1730 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
fb8c4b14 | 1731 | cFYI(1, ("EXTATTR cap")); |
75865f8c | 1732 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
fb8c4b14 | 1733 | cFYI(1, ("POSIX path cap")); |
75865f8c | 1734 | if (cap & CIFS_UNIX_XATTR_CAP) |
fb8c4b14 | 1735 | cFYI(1, ("XATTR cap")); |
75865f8c | 1736 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
fb8c4b14 | 1737 | cFYI(1, ("POSIX ACL cap")); |
75865f8c | 1738 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
fb8c4b14 | 1739 | cFYI(1, ("very large read cap")); |
75865f8c | 1740 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) |
fb8c4b14 | 1741 | cFYI(1, ("very large write cap")); |
8af18971 SF |
1742 | #endif /* CIFS_DEBUG2 */ |
1743 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
442aa310 | 1744 | if (vol_info == NULL) { |
5a44b319 | 1745 | cFYI(1, ("resetting capabilities failed")); |
442aa310 | 1746 | } else |
5a44b319 SF |
1747 | cERROR(1, ("Negotiating Unix capabilities " |
1748 | "with the server failed. Consider " | |
1749 | "mounting with the Unix Extensions\n" | |
1750 | "disabled, if problems are found, " | |
1751 | "by specifying the nounix mount " | |
2224f4e5 | 1752 | "option.")); |
5a44b319 | 1753 | |
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 | ||
a8a11d39 MK |
1912 | srvTcp = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); |
1913 | if (!srvTcp) { | |
1da177e4 LT |
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 { | |
50c2f753 SF |
1922 | memcpy(&srvTcp->addr.sockAddr, &sin_server, |
1923 | sizeof (struct sockaddr_in)); | |
1924 | atomic_set(&srvTcp->inFlight, 0); | |
1da177e4 LT |
1925 | /* BB Add code for ipv6 case too */ |
1926 | srvTcp->ssocket = csocket; | |
1927 | srvTcp->protocolType = IPV4; | |
1928 | init_waitqueue_head(&srvTcp->response_q); | |
1929 | init_waitqueue_head(&srvTcp->request_q); | |
1930 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
1931 | /* at this point we are the only ones with the pointer | |
1932 | to the struct since the kernel thread not created yet | |
1933 | so no need to spinlock this init of tcpStatus */ | |
1934 | srvTcp->tcpStatus = CifsNew; | |
1935 | init_MUTEX(&srvTcp->tcpSem); | |
aaf737ad | 1936 | srvTcp->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, srvTcp, "cifsd"); |
4523cc30 | 1937 | if ( IS_ERR(srvTcp->tsk) ) { |
aaf737ad | 1938 | rc = PTR_ERR(srvTcp->tsk); |
50c2f753 | 1939 | cERROR(1, ("error %d create cifsd thread", rc)); |
aaf737ad | 1940 | srvTcp->tsk = NULL; |
1da177e4 | 1941 | sock_release(csocket); |
f99d49ad JJ |
1942 | kfree(volume_info.UNC); |
1943 | kfree(volume_info.password); | |
2fe87f02 | 1944 | kfree(volume_info.prepath); |
1da177e4 LT |
1945 | FreeXid(xid); |
1946 | return rc; | |
f191401f SF |
1947 | } |
1948 | wait_for_completion(&cifsd_complete); | |
1949 | rc = 0; | |
50c2f753 SF |
1950 | memcpy(srvTcp->workstation_RFC1001_name, |
1951 | volume_info.source_rfc1001_name, 16); | |
1952 | memcpy(srvTcp->server_RFC1001_name, | |
1953 | volume_info.target_rfc1001_name, 16); | |
ad009ac9 | 1954 | srvTcp->sequence_number = 0; |
1da177e4 LT |
1955 | } |
1956 | } | |
1957 | ||
1958 | if (existingCifsSes) { | |
1959 | pSesInfo = existingCifsSes; | |
bf820679 | 1960 | cFYI(1, ("Existing smb sess found")); |
f99d49ad | 1961 | kfree(volume_info.password); |
1da177e4 LT |
1962 | /* volume_info.UNC freed at end of function */ |
1963 | } else if (!rc) { | |
bf820679 | 1964 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 LT |
1965 | pSesInfo = sesInfoAlloc(); |
1966 | if (pSesInfo == NULL) | |
1967 | rc = -ENOMEM; | |
1968 | else { | |
1969 | pSesInfo->server = srvTcp; | |
1970 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
1971 | NIPQUAD(sin_server.sin_addr.s_addr)); | |
1972 | } | |
1973 | ||
50c2f753 SF |
1974 | if (!rc) { |
1975 | /* volume_info.password freed at unmount */ | |
1da177e4 LT |
1976 | if (volume_info.password) |
1977 | pSesInfo->password = volume_info.password; | |
1978 | if (volume_info.username) | |
1979 | strncpy(pSesInfo->userName, | |
50c2f753 SF |
1980 | volume_info.username, |
1981 | MAX_USERNAME_SIZE); | |
3979877e SF |
1982 | if (volume_info.domainname) { |
1983 | int len = strlen(volume_info.domainname); | |
50c2f753 | 1984 | pSesInfo->domainName = |
3979877e | 1985 | kmalloc(len + 1, GFP_KERNEL); |
4523cc30 | 1986 | if (pSesInfo->domainName) |
3979877e SF |
1987 | strcpy(pSesInfo->domainName, |
1988 | volume_info.domainname); | |
1989 | } | |
1da177e4 | 1990 | pSesInfo->linux_uid = volume_info.linux_uid; |
750d1151 | 1991 | pSesInfo->overrideSecFlg = volume_info.secFlg; |
1da177e4 | 1992 | down(&pSesInfo->sesSem); |
189acaae | 1993 | /* BB FIXME need to pass vol->secFlgs BB */ |
50c2f753 SF |
1994 | rc = cifs_setup_session(xid, pSesInfo, |
1995 | cifs_sb->local_nls); | |
1da177e4 | 1996 | up(&pSesInfo->sesSem); |
4523cc30 | 1997 | if (!rc) |
1da177e4 LT |
1998 | atomic_inc(&srvTcp->socketUseCount); |
1999 | } else | |
f99d49ad | 2000 | kfree(volume_info.password); |
1da177e4 | 2001 | } |
50c2f753 | 2002 | |
1da177e4 LT |
2003 | /* search for existing tcon to this server share */ |
2004 | if (!rc) { | |
4523cc30 | 2005 | if (volume_info.rsize > CIFSMaxBufSize) { |
50c2f753 | 2006 | cERROR(1, ("rsize %d too large, using MaxBufSize", |
0ae0efad SF |
2007 | volume_info.rsize)); |
2008 | cifs_sb->rsize = CIFSMaxBufSize; | |
75865f8c SF |
2009 | } else if ((volume_info.rsize) && |
2010 | (volume_info.rsize <= CIFSMaxBufSize)) | |
1da177e4 | 2011 | cifs_sb->rsize = volume_info.rsize; |
0ae0efad SF |
2012 | else /* default */ |
2013 | cifs_sb->rsize = CIFSMaxBufSize; | |
2014 | ||
4523cc30 | 2015 | if (volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { |
50c2f753 | 2016 | cERROR(1, ("wsize %d too large, using 4096 instead", |
0ae0efad SF |
2017 | volume_info.wsize)); |
2018 | cifs_sb->wsize = 4096; | |
4523cc30 | 2019 | } else if (volume_info.wsize) |
1da177e4 LT |
2020 | cifs_sb->wsize = volume_info.wsize; |
2021 | else | |
50c2f753 | 2022 | cifs_sb->wsize = |
1877c9ea SF |
2023 | min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE, |
2024 | 127*1024); | |
17cbbafe | 2025 | /* old default of CIFSMaxBufSize was too small now |
50c2f753 | 2026 | that SMB Write2 can send multiple pages in kvec. |
17cbbafe SF |
2027 | RFC1001 does not describe what happens when frame |
2028 | bigger than 128K is sent so use that as max in | |
2029 | conjunction with 52K kvec constraint on arch with 4K | |
2030 | page size */ | |
2031 | ||
4523cc30 | 2032 | if (cifs_sb->rsize < 2048) { |
50c2f753 | 2033 | cifs_sb->rsize = 2048; |
6cec2aed | 2034 | /* Windows ME may prefer this */ |
467a8f8d | 2035 | cFYI(1, ("readsize set to minimum: 2048")); |
1da177e4 | 2036 | } |
2fe87f02 SF |
2037 | /* calculate prepath */ |
2038 | cifs_sb->prepath = volume_info.prepath; | |
4523cc30 | 2039 | if (cifs_sb->prepath) { |
2fe87f02 SF |
2040 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); |
2041 | cifs_sb->prepath[0] = CIFS_DIR_SEP(cifs_sb); | |
2042 | volume_info.prepath = NULL; | |
50c2f753 | 2043 | } else |
2fe87f02 | 2044 | cifs_sb->prepathlen = 0; |
1da177e4 LT |
2045 | cifs_sb->mnt_uid = volume_info.linux_uid; |
2046 | cifs_sb->mnt_gid = volume_info.linux_gid; | |
2047 | cifs_sb->mnt_file_mode = volume_info.file_mode; | |
2048 | cifs_sb->mnt_dir_mode = volume_info.dir_mode; | |
467a8f8d SF |
2049 | cFYI(1, ("file mode: 0x%x dir mode: 0x%x", |
2050 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode)); | |
1da177e4 | 2051 | |
4523cc30 | 2052 | if (volume_info.noperm) |
1da177e4 | 2053 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; |
4523cc30 | 2054 | if (volume_info.setuids) |
1da177e4 | 2055 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; |
4523cc30 | 2056 | if (volume_info.server_ino) |
1da177e4 | 2057 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; |
4523cc30 | 2058 | if (volume_info.remap) |
6a0b4824 | 2059 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; |
4523cc30 | 2060 | if (volume_info.no_xattr) |
1da177e4 | 2061 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; |
4523cc30 | 2062 | if (volume_info.sfu_emul) |
d7245c2c | 2063 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; |
4523cc30 | 2064 | if (volume_info.nobrl) |
c46fa8ac | 2065 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; |
4523cc30 | 2066 | if (volume_info.cifs_acl) |
0a4b92c0 | 2067 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; |
4523cc30 SF |
2068 | if (volume_info.override_uid) |
2069 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; | |
2070 | if (volume_info.override_gid) | |
2071 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; | |
2072 | if (volume_info.direct_io) { | |
467a8f8d | 2073 | cFYI(1, ("mounting share using direct i/o")); |
1da177e4 LT |
2074 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
2075 | } | |
2076 | ||
2077 | tcon = | |
2078 | find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, | |
2079 | volume_info.username); | |
2080 | if (tcon) { | |
bf820679 | 2081 | cFYI(1, ("Found match on UNC path")); |
1da177e4 LT |
2082 | /* we can have only one retry value for a connection |
2083 | to a share so for resources mounted more than once | |
50c2f753 | 2084 | to the same server share the last value passed in |
1da177e4 LT |
2085 | for the retry flag is used */ |
2086 | tcon->retry = volume_info.retry; | |
d3485d37 | 2087 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
2088 | } else { |
2089 | tcon = tconInfoAlloc(); | |
2090 | if (tcon == NULL) | |
2091 | rc = -ENOMEM; | |
2092 | else { | |
50c2f753 | 2093 | /* check for null share name ie connecting to |
8af18971 | 2094 | * dfs root */ |
1da177e4 | 2095 | |
50c2f753 | 2096 | /* BB check if this works for exactly length |
8af18971 | 2097 | * three strings */ |
1da177e4 LT |
2098 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) |
2099 | && (strchr(volume_info.UNC + 3, '/') == | |
2100 | NULL)) { | |
737b758c | 2101 | rc = connect_to_dfs_path(xid, pSesInfo, |
8af18971 | 2102 | "", cifs_sb->local_nls, |
50c2f753 | 2103 | cifs_sb->mnt_cifs_flags & |
8af18971 | 2104 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
f99d49ad | 2105 | kfree(volume_info.UNC); |
1da177e4 LT |
2106 | FreeXid(xid); |
2107 | return -ENODEV; | |
2108 | } else { | |
8af18971 SF |
2109 | /* BB Do we need to wrap sesSem around |
2110 | * this TCon call and Unix SetFS as | |
2111 | * we do on SessSetup and reconnect? */ | |
50c2f753 | 2112 | rc = CIFSTCon(xid, pSesInfo, |
1da177e4 LT |
2113 | volume_info.UNC, |
2114 | tcon, cifs_sb->local_nls); | |
2115 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
2116 | } | |
2117 | if (!rc) { | |
2118 | atomic_inc(&pSesInfo->inUse); | |
2119 | tcon->retry = volume_info.retry; | |
d3485d37 | 2120 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
2121 | } |
2122 | } | |
2123 | } | |
2124 | } | |
4523cc30 | 2125 | if (pSesInfo) { |
1da177e4 LT |
2126 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
2127 | sb->s_maxbytes = (u64) 1 << 63; | |
2128 | } else | |
2129 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
2130 | } | |
2131 | ||
8af18971 | 2132 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
1da177e4 LT |
2133 | sb->s_time_gran = 100; |
2134 | ||
2135 | /* on error free sesinfo and tcon struct if needed */ | |
2136 | if (rc) { | |
2137 | /* if session setup failed, use count is zero but | |
2138 | we still need to free cifsd thread */ | |
4523cc30 | 2139 | if (atomic_read(&srvTcp->socketUseCount) == 0) { |
1da177e4 LT |
2140 | spin_lock(&GlobalMid_Lock); |
2141 | srvTcp->tcpStatus = CifsExiting; | |
2142 | spin_unlock(&GlobalMid_Lock); | |
4523cc30 | 2143 | if (srvTcp->tsk) { |
28356a16 SF |
2144 | struct task_struct *tsk; |
2145 | /* If we could verify that kthread_stop would | |
2146 | always wake up processes blocked in | |
2147 | tcp in recv_mesg then we could remove the | |
2148 | send_sig call */ | |
50c2f753 | 2149 | force_sig(SIGKILL, srvTcp->tsk); |
28356a16 | 2150 | tsk = srvTcp->tsk; |
fb8c4b14 | 2151 | if (tsk) |
f7f7c31c | 2152 | kthread_stop(tsk); |
f191401f | 2153 | } |
1da177e4 LT |
2154 | } |
2155 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
2156 | if (tcon) /* up accidently freeing someone elses tcon struct */ | |
2157 | tconInfoFree(tcon); | |
2158 | if (existingCifsSes == NULL) { | |
2159 | if (pSesInfo) { | |
50c2f753 | 2160 | if ((pSesInfo->server) && |
1da177e4 LT |
2161 | (pSesInfo->status == CifsGood)) { |
2162 | int temp_rc; | |
2163 | temp_rc = CIFSSMBLogoff(xid, pSesInfo); | |
2164 | /* if the socketUseCount is now zero */ | |
4523cc30 | 2165 | if ((temp_rc == -ESHUTDOWN) && |
50c2f753 | 2166 | (pSesInfo->server) && |
5d9c7206 | 2167 | (pSesInfo->server->tsk)) { |
28356a16 | 2168 | struct task_struct *tsk; |
5d9c7206 J |
2169 | force_sig(SIGKILL, |
2170 | pSesInfo->server->tsk); | |
28356a16 | 2171 | tsk = pSesInfo->server->tsk; |
f7f7c31c | 2172 | if (tsk) |
28356a16 | 2173 | kthread_stop(tsk); |
f191401f | 2174 | } |
1da177e4 LT |
2175 | } else |
2176 | cFYI(1, ("No session or bad tcon")); | |
2177 | sesInfoFree(pSesInfo); | |
2178 | /* pSesInfo = NULL; */ | |
2179 | } | |
2180 | } | |
2181 | } else { | |
2182 | atomic_inc(&tcon->useCount); | |
2183 | cifs_sb->tcon = tcon; | |
2184 | tcon->ses = pSesInfo; | |
2185 | ||
82940a46 | 2186 | /* do not care if following two calls succeed - informational */ |
7f8ed420 SF |
2187 | if (!tcon->ipc) { |
2188 | CIFSSMBQFSDeviceInfo(xid, tcon); | |
2189 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
2190 | } | |
50c2f753 | 2191 | |
8af18971 SF |
2192 | /* tell server which Unix caps we support */ |
2193 | if (tcon->ses->capabilities & CAP_UNIX) | |
c18c842b SF |
2194 | /* reset of caps checks mount to see if unix extensions |
2195 | disabled for just this mount */ | |
8af18971 | 2196 | reset_cifs_unix_caps(xid, tcon, sb, &volume_info); |
c18c842b SF |
2197 | else |
2198 | tcon->unix_ext = 0; /* server does not support them */ | |
2199 | ||
2200 | if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) { | |
75865f8c SF |
2201 | cifs_sb->rsize = 1024 * 127; |
2202 | #ifdef CONFIG_CIFS_DEBUG2 | |
c18c842b | 2203 | cFYI(1, ("no very large read support, rsize now 127K")); |
75865f8c | 2204 | #endif |
75865f8c | 2205 | } |
3e84469d SF |
2206 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
2207 | cifs_sb->wsize = min(cifs_sb->wsize, | |
2208 | (tcon->ses->server->maxBuf - | |
2209 | MAX_CIFS_HDR_SIZE)); | |
0ae0efad | 2210 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
50c2f753 SF |
2211 | cifs_sb->rsize = min(cifs_sb->rsize, |
2212 | (tcon->ses->server->maxBuf - | |
2213 | MAX_CIFS_HDR_SIZE)); | |
1da177e4 LT |
2214 | } |
2215 | ||
2216 | /* volume_info.password is freed above when existing session found | |
2217 | (in which case it is not needed anymore) but when new sesion is created | |
2218 | the password ptr is put in the new session structure (in which case the | |
2219 | password will be freed at unmount time) */ | |
f99d49ad | 2220 | kfree(volume_info.UNC); |
2fe87f02 | 2221 | kfree(volume_info.prepath); |
1da177e4 LT |
2222 | FreeXid(xid); |
2223 | return rc; | |
2224 | } | |
2225 | ||
2226 | static int | |
2227 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 2228 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
2229 | const struct nls_table *nls_codepage) |
2230 | { | |
2231 | struct smb_hdr *smb_buffer; | |
2232 | struct smb_hdr *smb_buffer_response; | |
2233 | SESSION_SETUP_ANDX *pSMB; | |
2234 | SESSION_SETUP_ANDX *pSMBr; | |
2235 | char *bcc_ptr; | |
2236 | char *user; | |
2237 | char *domain; | |
2238 | int rc = 0; | |
2239 | int remaining_words = 0; | |
2240 | int bytes_returned = 0; | |
2241 | int len; | |
2242 | __u32 capabilities; | |
2243 | __u16 count; | |
2244 | ||
eeac8047 | 2245 | cFYI(1, ("In sesssetup")); |
4523cc30 | 2246 | if (ses == NULL) |
1da177e4 LT |
2247 | return -EINVAL; |
2248 | user = ses->userName; | |
2249 | domain = ses->domainName; | |
2250 | smb_buffer = cifs_buf_get(); | |
2251 | if (smb_buffer == NULL) { | |
2252 | return -ENOMEM; | |
2253 | } | |
2254 | smb_buffer_response = smb_buffer; | |
2255 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2256 | ||
2257 | /* send SMBsessionSetup here */ | |
2258 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2259 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2260 | ||
1982c344 | 2261 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2262 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2263 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2264 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2265 | ||
50c2f753 SF |
2266 | if (ses->server->secMode & |
2267 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
2268 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2269 | ||
2270 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2271 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2272 | if (ses->capabilities & CAP_UNICODE) { | |
2273 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2274 | capabilities |= CAP_UNICODE; | |
2275 | } | |
2276 | if (ses->capabilities & CAP_STATUS32) { | |
2277 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2278 | capabilities |= CAP_STATUS32; | |
2279 | } | |
2280 | if (ses->capabilities & CAP_DFS) { | |
2281 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2282 | capabilities |= CAP_DFS; | |
2283 | } | |
2284 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2285 | ||
50c2f753 | 2286 | pSMB->req_no_secext.CaseInsensitivePasswordLength = |
7c7b25bc | 2287 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2288 | |
2289 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2290 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2291 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2292 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2293 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2294 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2295 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2296 | |
2297 | if (ses->capabilities & CAP_UNICODE) { | |
2298 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2299 | *bcc_ptr = 0; | |
2300 | bcc_ptr++; | |
2301 | } | |
4523cc30 | 2302 | if (user == NULL) |
3979877e | 2303 | bytes_returned = 0; /* skip null user */ |
50c2f753 | 2304 | else |
1da177e4 | 2305 | bytes_returned = |
50c2f753 | 2306 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2307 | nls_codepage); |
2308 | /* convert number of 16 bit words to bytes */ | |
2309 | bcc_ptr += 2 * bytes_returned; | |
2310 | bcc_ptr += 2; /* trailing null */ | |
2311 | if (domain == NULL) | |
2312 | bytes_returned = | |
e89dc920 | 2313 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2314 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2315 | else | |
2316 | bytes_returned = | |
e89dc920 | 2317 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2318 | nls_codepage); |
2319 | bcc_ptr += 2 * bytes_returned; | |
2320 | bcc_ptr += 2; | |
2321 | bytes_returned = | |
e89dc920 | 2322 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2323 | 32, nls_codepage); |
2324 | bcc_ptr += 2 * bytes_returned; | |
2325 | bytes_returned = | |
e9ff3990 | 2326 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, |
1da177e4 LT |
2327 | 32, nls_codepage); |
2328 | bcc_ptr += 2 * bytes_returned; | |
2329 | bcc_ptr += 2; | |
2330 | bytes_returned = | |
e89dc920 | 2331 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2332 | 64, nls_codepage); |
2333 | bcc_ptr += 2 * bytes_returned; | |
2334 | bcc_ptr += 2; | |
2335 | } else { | |
50c2f753 | 2336 | if (user != NULL) { |
1da177e4 LT |
2337 | strncpy(bcc_ptr, user, 200); |
2338 | bcc_ptr += strnlen(user, 200); | |
2339 | } | |
2340 | *bcc_ptr = 0; | |
2341 | bcc_ptr++; | |
2342 | if (domain == NULL) { | |
2343 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2344 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2345 | } else { | |
2346 | strncpy(bcc_ptr, domain, 64); | |
2347 | bcc_ptr += strnlen(domain, 64); | |
2348 | *bcc_ptr = 0; | |
2349 | bcc_ptr++; | |
2350 | } | |
2351 | strcpy(bcc_ptr, "Linux version "); | |
2352 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2353 | strcpy(bcc_ptr, utsname()->release); |
2354 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2355 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2356 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2357 | } | |
2358 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2359 | smb_buffer->smb_buf_length += count; | |
2360 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2361 | ||
2362 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2363 | &bytes_returned, 1); | |
2364 | if (rc) { | |
2365 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2366 | } else if ((smb_buffer_response->WordCount == 3) | |
2367 | || (smb_buffer_response->WordCount == 4)) { | |
2368 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2369 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2370 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2371 | cFYI(1, (" Guest login")); /* BB mark SesInfo struct? */ |
2372 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format | |
2373 | (little endian) */ | |
1da177e4 | 2374 | cFYI(1, ("UID = %d ", ses->Suid)); |
50c2f753 SF |
2375 | /* response can have either 3 or 4 word count - Samba sends 3 */ |
2376 | bcc_ptr = pByteArea(smb_buffer_response); | |
1da177e4 LT |
2377 | if ((pSMBr->resp.hdr.WordCount == 3) |
2378 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2379 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2380 | if (pSMBr->resp.hdr.WordCount == 4) | |
2381 | bcc_ptr += blob_len; | |
2382 | ||
2383 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2384 | if ((long) (bcc_ptr) % 2) { | |
2385 | remaining_words = | |
50c2f753 SF |
2386 | (BCC(smb_buffer_response) - 1) / 2; |
2387 | /* Unicode strings must be word | |
2388 | aligned */ | |
2389 | bcc_ptr++; | |
1da177e4 LT |
2390 | } else { |
2391 | remaining_words = | |
2392 | BCC(smb_buffer_response) / 2; | |
2393 | } | |
2394 | len = | |
2395 | UniStrnlen((wchar_t *) bcc_ptr, | |
2396 | remaining_words - 1); | |
2397 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2398 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2399 | terminating last Unicode string in response */ | |
fb8c4b14 | 2400 | if (ses->serverOS) |
a424f8bf | 2401 | kfree(ses->serverOS); |
50c2f753 SF |
2402 | ses->serverOS = kzalloc(2 * (len + 1), |
2403 | GFP_KERNEL); | |
fb8c4b14 | 2404 | if (ses->serverOS == NULL) |
433dc24f | 2405 | goto sesssetup_nomem; |
1da177e4 | 2406 | cifs_strfromUCS_le(ses->serverOS, |
50c2f753 SF |
2407 | (__le16 *)bcc_ptr, |
2408 | len, nls_codepage); | |
1da177e4 LT |
2409 | bcc_ptr += 2 * (len + 1); |
2410 | remaining_words -= len + 1; | |
2411 | ses->serverOS[2 * len] = 0; | |
2412 | ses->serverOS[1 + (2 * len)] = 0; | |
2413 | if (remaining_words > 0) { | |
2414 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2415 | remaining_words-1); | |
cd49b492 | 2416 | kfree(ses->serverNOS); |
50c2f753 SF |
2417 | ses->serverNOS = kzalloc(2 * (len + 1), |
2418 | GFP_KERNEL); | |
fb8c4b14 | 2419 | if (ses->serverNOS == NULL) |
433dc24f | 2420 | goto sesssetup_nomem; |
1da177e4 | 2421 | cifs_strfromUCS_le(ses->serverNOS, |
50c2f753 SF |
2422 | (__le16 *)bcc_ptr, |
2423 | len, nls_codepage); | |
1da177e4 LT |
2424 | bcc_ptr += 2 * (len + 1); |
2425 | ses->serverNOS[2 * len] = 0; | |
2426 | ses->serverNOS[1 + (2 * len)] = 0; | |
fb8c4b14 | 2427 | if (strncmp(ses->serverNOS, |
50c2f753 | 2428 | "NT LAN Manager 4", 16) == 0) { |
467a8f8d | 2429 | cFYI(1, ("NT4 server")); |
1da177e4 LT |
2430 | ses->flags |= CIFS_SES_NT4; |
2431 | } | |
2432 | remaining_words -= len + 1; | |
2433 | if (remaining_words > 0) { | |
433dc24f | 2434 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
50c2f753 SF |
2435 | /* last string is not always null terminated |
2436 | (for e.g. for Windows XP & 2000) */ | |
fb8c4b14 | 2437 | if (ses->serverDomain) |
a424f8bf | 2438 | kfree(ses->serverDomain); |
1da177e4 | 2439 | ses->serverDomain = |
50c2f753 SF |
2440 | kzalloc(2*(len+1), |
2441 | GFP_KERNEL); | |
fb8c4b14 | 2442 | if (ses->serverDomain == NULL) |
433dc24f | 2443 | goto sesssetup_nomem; |
1da177e4 | 2444 | cifs_strfromUCS_le(ses->serverDomain, |
50c2f753 SF |
2445 | (__le16 *)bcc_ptr, |
2446 | len, nls_codepage); | |
1da177e4 LT |
2447 | bcc_ptr += 2 * (len + 1); |
2448 | ses->serverDomain[2*len] = 0; | |
2449 | ses->serverDomain[1+(2*len)] = 0; | |
50c2f753 SF |
2450 | } else { /* else no more room so create |
2451 | dummy domain string */ | |
fb8c4b14 | 2452 | if (ses->serverDomain) |
a424f8bf | 2453 | kfree(ses->serverDomain); |
50c2f753 | 2454 | ses->serverDomain = |
e915fc49 | 2455 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2456 | } |
50c2f753 SF |
2457 | } else { /* no room so create dummy domain |
2458 | and NOS string */ | |
2459 | ||
433dc24f SF |
2460 | /* if these kcallocs fail not much we |
2461 | can do, but better to not fail the | |
2462 | sesssetup itself */ | |
cd49b492 | 2463 | kfree(ses->serverDomain); |
1da177e4 | 2464 | ses->serverDomain = |
e915fc49 | 2465 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2466 | kfree(ses->serverNOS); |
1da177e4 | 2467 | ses->serverNOS = |
e915fc49 | 2468 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2469 | } |
2470 | } else { /* ASCII */ | |
2471 | len = strnlen(bcc_ptr, 1024); | |
2472 | if (((long) bcc_ptr + len) - (long) | |
2473 | pByteArea(smb_buffer_response) | |
2474 | <= BCC(smb_buffer_response)) { | |
cd49b492 | 2475 | kfree(ses->serverOS); |
50c2f753 SF |
2476 | ses->serverOS = kzalloc(len + 1, |
2477 | GFP_KERNEL); | |
fb8c4b14 | 2478 | if (ses->serverOS == NULL) |
433dc24f | 2479 | goto sesssetup_nomem; |
50c2f753 | 2480 | strncpy(ses->serverOS, bcc_ptr, len); |
1da177e4 LT |
2481 | |
2482 | bcc_ptr += len; | |
50c2f753 SF |
2483 | /* null terminate the string */ |
2484 | bcc_ptr[0] = 0; | |
1da177e4 LT |
2485 | bcc_ptr++; |
2486 | ||
2487 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2488 | kfree(ses->serverNOS); |
50c2f753 SF |
2489 | ses->serverNOS = kzalloc(len + 1, |
2490 | GFP_KERNEL); | |
fb8c4b14 | 2491 | if (ses->serverNOS == NULL) |
433dc24f | 2492 | goto sesssetup_nomem; |
1da177e4 LT |
2493 | strncpy(ses->serverNOS, bcc_ptr, len); |
2494 | bcc_ptr += len; | |
2495 | bcc_ptr[0] = 0; | |
2496 | bcc_ptr++; | |
2497 | ||
2498 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 2499 | if (ses->serverDomain) |
a424f8bf | 2500 | kfree(ses->serverDomain); |
50c2f753 SF |
2501 | ses->serverDomain = kzalloc(len + 1, |
2502 | GFP_KERNEL); | |
fb8c4b14 | 2503 | if (ses->serverDomain == NULL) |
433dc24f | 2504 | goto sesssetup_nomem; |
50c2f753 SF |
2505 | strncpy(ses->serverDomain, bcc_ptr, |
2506 | len); | |
1da177e4 LT |
2507 | bcc_ptr += len; |
2508 | bcc_ptr[0] = 0; | |
2509 | bcc_ptr++; | |
2510 | } else | |
2511 | cFYI(1, | |
50c2f753 SF |
2512 | ("Variable field of length %d " |
2513 | "extends beyond end of smb ", | |
1da177e4 LT |
2514 | len)); |
2515 | } | |
2516 | } else { | |
2517 | cERROR(1, | |
50c2f753 SF |
2518 | (" Security Blob Length extends beyond " |
2519 | "end of SMB")); | |
1da177e4 LT |
2520 | } |
2521 | } else { | |
2522 | cERROR(1, | |
2523 | (" Invalid Word count %d: ", | |
2524 | smb_buffer_response->WordCount)); | |
2525 | rc = -EIO; | |
2526 | } | |
433dc24f SF |
2527 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2528 | since that could make reconnection harder, and | |
2529 | reconnection might be needed to free memory */ | |
a8a11d39 | 2530 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
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 | ||
a8a11d39 | 2868 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2869 | |
2870 | return rc; | |
2871 | } | |
2872 | static int | |
2873 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
2874 | char *ntlm_session_key, int ntlmv2_flag, | |
2875 | const struct nls_table *nls_codepage) | |
2876 | { | |
2877 | struct smb_hdr *smb_buffer; | |
2878 | struct smb_hdr *smb_buffer_response; | |
2879 | SESSION_SETUP_ANDX *pSMB; | |
2880 | SESSION_SETUP_ANDX *pSMBr; | |
2881 | char *bcc_ptr; | |
2882 | char *user; | |
2883 | char *domain; | |
2884 | int rc = 0; | |
2885 | int remaining_words = 0; | |
2886 | int bytes_returned = 0; | |
2887 | int len; | |
2888 | int SecurityBlobLength = sizeof (AUTHENTICATE_MESSAGE); | |
2889 | PAUTHENTICATE_MESSAGE SecurityBlob; | |
2890 | __u32 negotiate_flags, capabilities; | |
2891 | __u16 count; | |
2892 | ||
2893 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
fb8c4b14 | 2894 | if (ses == NULL) |
1da177e4 LT |
2895 | return -EINVAL; |
2896 | user = ses->userName; | |
2897 | domain = ses->domainName; | |
2898 | smb_buffer = cifs_buf_get(); | |
2899 | if (smb_buffer == NULL) { | |
2900 | return -ENOMEM; | |
2901 | } | |
2902 | smb_buffer_response = smb_buffer; | |
2903 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2904 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2905 | ||
2906 | /* send SMBsessionSetup here */ | |
2907 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2908 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2909 | |
2910 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2911 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
2912 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2913 | pSMB->req.AndXCommand = 0xFF; | |
2914 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2915 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2916 | ||
2917 | pSMB->req.hdr.Uid = ses->Suid; | |
2918 | ||
fb8c4b14 | 2919 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2920 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2921 | ||
2922 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2923 | CAP_EXTENDED_SECURITY; | |
2924 | if (ses->capabilities & CAP_UNICODE) { | |
2925 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2926 | capabilities |= CAP_UNICODE; | |
2927 | } | |
2928 | if (ses->capabilities & CAP_STATUS32) { | |
2929 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2930 | capabilities |= CAP_STATUS32; | |
2931 | } | |
2932 | if (ses->capabilities & CAP_DFS) { | |
2933 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2934 | capabilities |= CAP_DFS; | |
2935 | } | |
2936 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2937 | ||
2938 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2939 | SecurityBlob = (PAUTHENTICATE_MESSAGE) bcc_ptr; | |
2940 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2941 | SecurityBlob->MessageType = NtLmAuthenticate; | |
2942 | bcc_ptr += SecurityBlobLength; | |
50c2f753 | 2943 | negotiate_flags = |
1da177e4 LT |
2944 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | |
2945 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
2946 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
fb8c4b14 | 2947 | if (sign_CIFS_PDUs) |
1da177e4 | 2948 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 2949 | if (ntlmv2_flag) |
1da177e4 LT |
2950 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; |
2951 | ||
2952 | /* setup pointers to domain name and workstation name */ | |
2953 | ||
2954 | SecurityBlob->WorkstationName.Buffer = 0; | |
2955 | SecurityBlob->WorkstationName.Length = 0; | |
2956 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2957 | SecurityBlob->SessionKey.Length = 0; | |
2958 | SecurityBlob->SessionKey.MaximumLength = 0; | |
2959 | SecurityBlob->SessionKey.Buffer = 0; | |
2960 | ||
2961 | SecurityBlob->LmChallengeResponse.Length = 0; | |
2962 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
2963 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
2964 | ||
2965 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 2966 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2967 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
2968 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
2969 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
2970 | SecurityBlob->NtChallengeResponse.Buffer = |
2971 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
2972 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
2973 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2974 | |
2975 | if (ses->capabilities & CAP_UNICODE) { | |
2976 | if (domain == NULL) { | |
2977 | SecurityBlob->DomainName.Buffer = 0; | |
2978 | SecurityBlob->DomainName.Length = 0; | |
2979 | SecurityBlob->DomainName.MaximumLength = 0; | |
2980 | } else { | |
77159b4d | 2981 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 | 2982 | nls_codepage); |
77159b4d | 2983 | ln *= 2; |
1da177e4 | 2984 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 2985 | cpu_to_le16(ln); |
1da177e4 LT |
2986 | SecurityBlob->DomainName.Buffer = |
2987 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
2988 | bcc_ptr += ln; |
2989 | SecurityBlobLength += ln; | |
2990 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
2991 | } |
2992 | if (user == NULL) { | |
2993 | SecurityBlob->UserName.Buffer = 0; | |
2994 | SecurityBlob->UserName.Length = 0; | |
2995 | SecurityBlob->UserName.MaximumLength = 0; | |
2996 | } else { | |
77159b4d | 2997 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 | 2998 | nls_codepage); |
77159b4d | 2999 | ln *= 2; |
1da177e4 | 3000 | SecurityBlob->UserName.MaximumLength = |
77159b4d | 3001 | cpu_to_le16(ln); |
1da177e4 LT |
3002 | SecurityBlob->UserName.Buffer = |
3003 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3004 | bcc_ptr += ln; |
3005 | SecurityBlobLength += ln; | |
3006 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3007 | } |
3008 | ||
63135e08 SF |
3009 | /* SecurityBlob->WorkstationName.Length = |
3010 | cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); | |
1da177e4 | 3011 | SecurityBlob->WorkstationName.Length *= 2; |
63135e08 SF |
3012 | SecurityBlob->WorkstationName.MaximumLength = |
3013 | cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
3014 | SecurityBlob->WorkstationName.Buffer = | |
3015 | cpu_to_le32(SecurityBlobLength); | |
1da177e4 LT |
3016 | bcc_ptr += SecurityBlob->WorkstationName.Length; |
3017 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
63135e08 SF |
3018 | SecurityBlob->WorkstationName.Length = |
3019 | cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
1da177e4 LT |
3020 | |
3021 | if ((long) bcc_ptr % 2) { | |
3022 | *bcc_ptr = 0; | |
3023 | bcc_ptr++; | |
3024 | } | |
3025 | bytes_returned = | |
e89dc920 | 3026 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
3027 | 32, nls_codepage); |
3028 | bcc_ptr += 2 * bytes_returned; | |
3029 | bytes_returned = | |
e9ff3990 | 3030 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
3031 | nls_codepage); |
3032 | bcc_ptr += 2 * bytes_returned; | |
3033 | bcc_ptr += 2; /* null term version string */ | |
3034 | bytes_returned = | |
e89dc920 | 3035 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
3036 | 64, nls_codepage); |
3037 | bcc_ptr += 2 * bytes_returned; | |
3038 | *(bcc_ptr + 1) = 0; | |
3039 | *(bcc_ptr + 2) = 0; | |
3040 | bcc_ptr += 2; /* null terminate network opsys string */ | |
3041 | *(bcc_ptr + 1) = 0; | |
3042 | *(bcc_ptr + 2) = 0; | |
3043 | bcc_ptr += 2; /* null domain */ | |
3044 | } else { /* ASCII */ | |
3045 | if (domain == NULL) { | |
3046 | SecurityBlob->DomainName.Buffer = 0; | |
3047 | SecurityBlob->DomainName.Length = 0; | |
3048 | SecurityBlob->DomainName.MaximumLength = 0; | |
3049 | } else { | |
77159b4d | 3050 | __u16 ln; |
1da177e4 LT |
3051 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; |
3052 | strncpy(bcc_ptr, domain, 63); | |
77159b4d | 3053 | ln = strnlen(domain, 64); |
1da177e4 | 3054 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3055 | cpu_to_le16(ln); |
1da177e4 LT |
3056 | SecurityBlob->DomainName.Buffer = |
3057 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3058 | bcc_ptr += ln; |
3059 | SecurityBlobLength += ln; | |
3060 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3061 | } |
3062 | if (user == NULL) { | |
3063 | SecurityBlob->UserName.Buffer = 0; | |
3064 | SecurityBlob->UserName.Length = 0; | |
3065 | SecurityBlob->UserName.MaximumLength = 0; | |
3066 | } else { | |
77159b4d | 3067 | __u16 ln; |
1da177e4 | 3068 | strncpy(bcc_ptr, user, 63); |
77159b4d SF |
3069 | ln = strnlen(user, 64); |
3070 | SecurityBlob->UserName.MaximumLength = cpu_to_le16(ln); | |
1da177e4 | 3071 | SecurityBlob->UserName.Buffer = |
77159b4d SF |
3072 | cpu_to_le32(SecurityBlobLength); |
3073 | bcc_ptr += ln; | |
3074 | SecurityBlobLength += ln; | |
3075 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3076 | } |
3077 | /* BB fill in our workstation name if known BB */ | |
3078 | ||
3079 | strcpy(bcc_ptr, "Linux version "); | |
3080 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
3081 | strcpy(bcc_ptr, utsname()->release); |
3082 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
3083 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
3084 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
3085 | bcc_ptr++; /* null domain */ | |
3086 | *bcc_ptr = 0; | |
3087 | } | |
3088 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
3089 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
3090 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
3091 | smb_buffer->smb_buf_length += count; | |
3092 | pSMB->req.ByteCount = cpu_to_le16(count); | |
3093 | ||
3094 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
3095 | &bytes_returned, 1); | |
3096 | if (rc) { | |
3097 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
3098 | } else if ((smb_buffer_response->WordCount == 3) | |
3099 | || (smb_buffer_response->WordCount == 4)) { | |
3100 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
3101 | __u16 blob_len = | |
3102 | le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
3103 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
3104 | cFYI(1, (" Guest login")); /* BB Should we set anything |
3105 | in SesInfo struct ? */ | |
3106 | /* if (SecurityBlob2->MessageType != NtLm??) { | |
3107 | cFYI("Unexpected message type on auth response is %d")); | |
3108 | } */ | |
3109 | ||
1da177e4 LT |
3110 | if (ses) { |
3111 | cFYI(1, | |
50c2f753 | 3112 | ("Check challenge UID %d vs auth response UID %d", |
1da177e4 | 3113 | ses->Suid, smb_buffer_response->Uid)); |
50c2f753 SF |
3114 | /* UID left in wire format */ |
3115 | ses->Suid = smb_buffer_response->Uid; | |
3116 | bcc_ptr = pByteArea(smb_buffer_response); | |
3117 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
3118 | if ((pSMBr->resp.hdr.WordCount == 3) |
3119 | || ((pSMBr->resp.hdr.WordCount == 4) | |
3120 | && (blob_len < | |
3121 | pSMBr->resp.ByteCount))) { | |
3122 | if (pSMBr->resp.hdr.WordCount == 4) { | |
3123 | bcc_ptr += | |
3124 | blob_len; | |
3125 | cFYI(1, | |
3126 | ("Security Blob Length %d ", | |
3127 | blob_len)); | |
3128 | } | |
3129 | ||
3130 | cFYI(1, | |
3131 | ("NTLMSSP response to Authenticate ")); | |
3132 | ||
3133 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3134 | if ((long) (bcc_ptr) % 2) { | |
3135 | remaining_words = | |
3136 | (BCC(smb_buffer_response) | |
3137 | - 1) / 2; | |
3138 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
3139 | } else { | |
3140 | remaining_words = BCC(smb_buffer_response) / 2; | |
3141 | } | |
77159b4d SF |
3142 | len = UniStrnlen((wchar_t *) bcc_ptr, |
3143 | remaining_words - 1); | |
1da177e4 LT |
3144 | /* We look for obvious messed up bcc or strings in response so we do not go off |
3145 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
3146 | terminating last Unicode string in response */ | |
fb8c4b14 | 3147 | if (ses->serverOS) |
08775834 | 3148 | kfree(ses->serverOS); |
1da177e4 | 3149 | ses->serverOS = |
e915fc49 | 3150 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 3151 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 3152 | (__le16 *) |
1da177e4 LT |
3153 | bcc_ptr, len, |
3154 | nls_codepage); | |
3155 | bcc_ptr += 2 * (len + 1); | |
3156 | remaining_words -= len + 1; | |
3157 | ses->serverOS[2 * len] = 0; | |
3158 | ses->serverOS[1 + (2 * len)] = 0; | |
3159 | if (remaining_words > 0) { | |
3160 | len = UniStrnlen((wchar_t *) | |
3161 | bcc_ptr, | |
3162 | remaining_words | |
3163 | - 1); | |
cd49b492 | 3164 | kfree(ses->serverNOS); |
1da177e4 | 3165 | ses->serverNOS = |
e915fc49 | 3166 | kzalloc(2 * (len + 1), |
1da177e4 LT |
3167 | GFP_KERNEL); |
3168 | cifs_strfromUCS_le(ses-> | |
3169 | serverNOS, | |
e89dc920 | 3170 | (__le16 *) |
1da177e4 LT |
3171 | bcc_ptr, |
3172 | len, | |
3173 | nls_codepage); | |
3174 | bcc_ptr += 2 * (len + 1); | |
3175 | ses->serverNOS[2 * len] = 0; | |
3176 | ses->serverNOS[1+(2*len)] = 0; | |
3177 | remaining_words -= len + 1; | |
3178 | if (remaining_words > 0) { | |
50c2f753 | 3179 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 3180 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ |
fb8c4b14 | 3181 | if (ses->serverDomain) |
a424f8bf | 3182 | kfree(ses->serverDomain); |
1da177e4 | 3183 | ses->serverDomain = |
e915fc49 | 3184 | kzalloc(2 * |
1da177e4 LT |
3185 | (len + |
3186 | 1), | |
3187 | GFP_KERNEL); | |
3188 | cifs_strfromUCS_le | |
3189 | (ses-> | |
3190 | serverDomain, | |
e89dc920 | 3191 | (__le16 *) |
1da177e4 LT |
3192 | bcc_ptr, len, |
3193 | nls_codepage); | |
3194 | bcc_ptr += | |
3195 | 2 * (len + 1); | |
3196 | ses-> | |
3197 | serverDomain[2 | |
3198 | * len] | |
3199 | = 0; | |
3200 | ses-> | |
3201 | serverDomain[1 | |
3202 | + | |
3203 | (2 | |
3204 | * | |
3205 | len)] | |
3206 | = 0; | |
3207 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 3208 | else { |
fb8c4b14 | 3209 | if (ses->serverDomain) |
a424f8bf | 3210 | kfree(ses->serverDomain); |
e915fc49 | 3211 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 3212 | } |
1da177e4 | 3213 | } else { /* no room so create dummy domain and NOS string */ |
fb8c4b14 | 3214 | if (ses->serverDomain) |
a424f8bf | 3215 | kfree(ses->serverDomain); |
e915fc49 | 3216 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 3217 | kfree(ses->serverNOS); |
e915fc49 | 3218 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3219 | } |
3220 | } else { /* ASCII */ | |
3221 | len = strnlen(bcc_ptr, 1024); | |
50c2f753 SF |
3222 | if (((long) bcc_ptr + len) - |
3223 | (long) pByteArea(smb_buffer_response) | |
63135e08 | 3224 | <= BCC(smb_buffer_response)) { |
fb8c4b14 | 3225 | if (ses->serverOS) |
a424f8bf | 3226 | kfree(ses->serverOS); |
77159b4d | 3227 | ses->serverOS = kzalloc(len + 1, GFP_KERNEL); |
1da177e4 LT |
3228 | strncpy(ses->serverOS,bcc_ptr, len); |
3229 | ||
3230 | bcc_ptr += len; | |
3231 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3232 | bcc_ptr++; | |
3233 | ||
3234 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3235 | kfree(ses->serverNOS); |
50c2f753 SF |
3236 | ses->serverNOS = kzalloc(len+1, |
3237 | GFP_KERNEL); | |
63135e08 SF |
3238 | strncpy(ses->serverNOS, |
3239 | bcc_ptr, len); | |
1da177e4 LT |
3240 | bcc_ptr += len; |
3241 | bcc_ptr[0] = 0; | |
3242 | bcc_ptr++; | |
3243 | ||
3244 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 3245 | if (ses->serverDomain) |
a424f8bf | 3246 | kfree(ses->serverDomain); |
63135e08 SF |
3247 | ses->serverDomain = |
3248 | kzalloc(len+1, | |
3249 | GFP_KERNEL); | |
3250 | strncpy(ses->serverDomain, | |
3251 | bcc_ptr, len); | |
1da177e4 LT |
3252 | bcc_ptr += len; |
3253 | bcc_ptr[0] = 0; | |
3254 | bcc_ptr++; | |
3255 | } else | |
3256 | cFYI(1, | |
63135e08 SF |
3257 | ("field of length %d " |
3258 | "extends beyond end of smb ", | |
1da177e4 LT |
3259 | len)); |
3260 | } | |
3261 | } else { | |
3262 | cERROR(1, | |
63135e08 SF |
3263 | (" Security Blob extends beyond end " |
3264 | "of SMB")); | |
1da177e4 LT |
3265 | } |
3266 | } else { | |
3267 | cERROR(1, ("No session structure passed in.")); | |
3268 | } | |
3269 | } else { | |
3270 | cERROR(1, | |
3271 | (" Invalid Word count %d: ", | |
3272 | smb_buffer_response->WordCount)); | |
3273 | rc = -EIO; | |
3274 | } | |
3275 | ||
a8a11d39 | 3276 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3277 | |
3278 | return rc; | |
3279 | } | |
3280 | ||
3281 | int | |
3282 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3283 | const char *tree, struct cifsTconInfo *tcon, | |
3284 | const struct nls_table *nls_codepage) | |
3285 | { | |
3286 | struct smb_hdr *smb_buffer; | |
3287 | struct smb_hdr *smb_buffer_response; | |
3288 | TCONX_REQ *pSMB; | |
3289 | TCONX_RSP *pSMBr; | |
3290 | unsigned char *bcc_ptr; | |
3291 | int rc = 0; | |
3292 | int length; | |
3293 | __u16 count; | |
3294 | ||
3295 | if (ses == NULL) | |
3296 | return -EIO; | |
3297 | ||
3298 | smb_buffer = cifs_buf_get(); | |
3299 | if (smb_buffer == NULL) { | |
3300 | return -ENOMEM; | |
3301 | } | |
3302 | smb_buffer_response = smb_buffer; | |
3303 | ||
3304 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3305 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3306 | |
3307 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3308 | smb_buffer->Uid = ses->Suid; |
3309 | pSMB = (TCONX_REQ *) smb_buffer; | |
3310 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3311 | ||
3312 | pSMB->AndXCommand = 0xFF; | |
3313 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3314 | bcc_ptr = &pSMB->Password[0]; |
fb8c4b14 | 3315 | if ((ses->server->secMode) & SECMODE_USER) { |
eeac8047 | 3316 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
7c7b25bc | 3317 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3318 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3319 | /* already aligned so no need to do it below */ |
eeac8047 | 3320 | } else { |
7c7b25bc | 3321 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3322 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3323 | specified as required (when that support is added to | |
3324 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3325 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3326 | by Samba (not sure whether other servers allow |
3327 | NTLMv2 password here) */ | |
7c7b25bc | 3328 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
50c2f753 | 3329 | if ((extended_security & CIFSSEC_MAY_LANMAN) && |
7c7b25bc SF |
3330 | (ses->server->secType == LANMAN)) |
3331 | calc_lanman_hash(ses, bcc_ptr); | |
3332 | else | |
3333 | #endif /* CIFS_WEAK_PW_HASH */ | |
eeac8047 SF |
3334 | SMBNTencrypt(ses->password, |
3335 | ses->server->cryptKey, | |
3336 | bcc_ptr); | |
3337 | ||
7c7b25bc | 3338 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
fb8c4b14 | 3339 | if (ses->capabilities & CAP_UNICODE) { |
7c7b25bc SF |
3340 | /* must align unicode strings */ |
3341 | *bcc_ptr = 0; /* null byte password */ | |
3342 | bcc_ptr++; | |
3343 | } | |
eeac8047 | 3344 | } |
1da177e4 | 3345 | |
50c2f753 | 3346 | if (ses->server->secMode & |
a878fb22 | 3347 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3348 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3349 | ||
3350 | if (ses->capabilities & CAP_STATUS32) { | |
3351 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3352 | } | |
3353 | if (ses->capabilities & CAP_DFS) { | |
3354 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3355 | } | |
3356 | if (ses->capabilities & CAP_UNICODE) { | |
3357 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3358 | length = | |
50c2f753 SF |
3359 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3360 | 6 /* max utf8 char length in bytes */ * | |
a878fb22 SF |
3361 | (/* server len*/ + 256 /* share len */), nls_codepage); |
3362 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3363 | bcc_ptr += 2; /* skip trailing null */ |
3364 | } else { /* ASCII */ | |
1da177e4 LT |
3365 | strcpy(bcc_ptr, tree); |
3366 | bcc_ptr += strlen(tree) + 1; | |
3367 | } | |
3368 | strcpy(bcc_ptr, "?????"); | |
3369 | bcc_ptr += strlen("?????"); | |
3370 | bcc_ptr += 1; | |
3371 | count = bcc_ptr - &pSMB->Password[0]; | |
3372 | pSMB->hdr.smb_buf_length += count; | |
3373 | pSMB->ByteCount = cpu_to_le16(count); | |
3374 | ||
3375 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, 0); | |
3376 | ||
3377 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3378 | /* above now done in SendReceive */ | |
3379 | if ((rc == 0) && (tcon != NULL)) { | |
3380 | tcon->tidStatus = CifsGood; | |
3381 | tcon->tid = smb_buffer_response->Tid; | |
3382 | bcc_ptr = pByteArea(smb_buffer_response); | |
3383 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
50c2f753 | 3384 | /* skip service field (NB: this field is always ASCII) */ |
7f8ed420 SF |
3385 | if (length == 3) { |
3386 | if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') && | |
3387 | (bcc_ptr[2] == 'C')) { | |
3388 | cFYI(1, ("IPC connection")); | |
3389 | tcon->ipc = 1; | |
3390 | } | |
3391 | } else if (length == 2) { | |
3392 | if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) { | |
3393 | /* the most common case */ | |
3394 | cFYI(1, ("disk share connection")); | |
3395 | } | |
3396 | } | |
50c2f753 | 3397 | bcc_ptr += length + 1; |
1da177e4 LT |
3398 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
3399 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3400 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3401 | if ((bcc_ptr + (2 * length)) - | |
3402 | pByteArea(smb_buffer_response) <= | |
3403 | BCC(smb_buffer_response)) { | |
f99d49ad | 3404 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3405 | tcon->nativeFileSystem = |
e915fc49 | 3406 | kzalloc(length + 2, GFP_KERNEL); |
88f370a6 SF |
3407 | if (tcon->nativeFileSystem) |
3408 | cifs_strfromUCS_le( | |
3409 | tcon->nativeFileSystem, | |
3410 | (__le16 *) bcc_ptr, | |
3411 | length, nls_codepage); | |
1da177e4 LT |
3412 | bcc_ptr += 2 * length; |
3413 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3414 | bcc_ptr[1] = 0; | |
3415 | bcc_ptr += 2; | |
3416 | } | |
50c2f753 | 3417 | /* else do not bother copying these information fields*/ |
1da177e4 LT |
3418 | } else { |
3419 | length = strnlen(bcc_ptr, 1024); | |
3420 | if ((bcc_ptr + length) - | |
3421 | pByteArea(smb_buffer_response) <= | |
3422 | BCC(smb_buffer_response)) { | |
f99d49ad | 3423 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3424 | tcon->nativeFileSystem = |
e915fc49 | 3425 | kzalloc(length + 1, GFP_KERNEL); |
88f370a6 SF |
3426 | if (tcon->nativeFileSystem) |
3427 | strncpy(tcon->nativeFileSystem, bcc_ptr, | |
3428 | length); | |
1da177e4 | 3429 | } |
50c2f753 | 3430 | /* else do not bother copying these information fields*/ |
1da177e4 | 3431 | } |
fb8c4b14 | 3432 | if ((smb_buffer_response->WordCount == 3) || |
1a4e15a0 SF |
3433 | (smb_buffer_response->WordCount == 7)) |
3434 | /* field is in same location */ | |
3979877e SF |
3435 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
3436 | else | |
3437 | tcon->Flags = 0; | |
1da177e4 LT |
3438 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3439 | } else if ((rc == 0) && tcon == NULL) { | |
50c2f753 | 3440 | /* all we need to save for IPC$ connection */ |
1da177e4 LT |
3441 | ses->ipc_tid = smb_buffer_response->Tid; |
3442 | } | |
3443 | ||
a8a11d39 | 3444 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3445 | return rc; |
3446 | } | |
3447 | ||
3448 | int | |
3449 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3450 | { | |
3451 | int rc = 0; | |
3452 | int xid; | |
3453 | struct cifsSesInfo *ses = NULL; | |
3454 | struct task_struct *cifsd_task; | |
50c2f753 | 3455 | char *tmp; |
1da177e4 LT |
3456 | |
3457 | xid = GetXid(); | |
3458 | ||
3459 | if (cifs_sb->tcon) { | |
3460 | ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ | |
3461 | rc = CIFSSMBTDis(xid, cifs_sb->tcon); | |
3462 | if (rc == -EBUSY) { | |
3463 | FreeXid(xid); | |
3464 | return 0; | |
3465 | } | |
3466 | tconInfoFree(cifs_sb->tcon); | |
3467 | if ((ses) && (ses->server)) { | |
3468 | /* save off task so we do not refer to ses later */ | |
3469 | cifsd_task = ses->server->tsk; | |
3470 | cFYI(1, ("About to do SMBLogoff ")); | |
3471 | rc = CIFSSMBLogoff(xid, ses); | |
3472 | if (rc == -EBUSY) { | |
3473 | FreeXid(xid); | |
3474 | return 0; | |
3475 | } else if (rc == -ESHUTDOWN) { | |
467a8f8d | 3476 | cFYI(1, ("Waking up socket by sending signal")); |
f7f7c31c | 3477 | if (cifsd_task) { |
50c2f753 | 3478 | force_sig(SIGKILL, cifsd_task); |
aaf737ad | 3479 | kthread_stop(cifsd_task); |
f191401f | 3480 | } |
1da177e4 LT |
3481 | rc = 0; |
3482 | } /* else - we have an smb session | |
3483 | left on this socket do not kill cifsd */ | |
3484 | } else | |
3485 | cFYI(1, ("No session or bad tcon")); | |
3486 | } | |
50c2f753 | 3487 | |
1da177e4 | 3488 | cifs_sb->tcon = NULL; |
2fe87f02 SF |
3489 | tmp = cifs_sb->prepath; |
3490 | cifs_sb->prepathlen = 0; | |
3491 | cifs_sb->prepath = NULL; | |
3492 | kfree(tmp); | |
041e0e3b NA |
3493 | if (ses) |
3494 | schedule_timeout_interruptible(msecs_to_jiffies(500)); | |
1da177e4 LT |
3495 | if (ses) |
3496 | sesInfoFree(ses); | |
3497 | ||
3498 | FreeXid(xid); | |
50c2f753 SF |
3499 | return rc; /* BB check if we should always return zero here */ |
3500 | } | |
1da177e4 LT |
3501 | |
3502 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
50c2f753 | 3503 | struct nls_table *nls_info) |
1da177e4 LT |
3504 | { |
3505 | int rc = 0; | |
7c7b25bc | 3506 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
1da177e4 | 3507 | int ntlmv2_flag = FALSE; |
ad009ac9 | 3508 | int first_time = 0; |
1da177e4 LT |
3509 | |
3510 | /* what if server changes its buffer size after dropping the session? */ | |
fb8c4b14 | 3511 | if (pSesInfo->server->maxBuf == 0) /* no need to send on reconnect */ { |
1da177e4 | 3512 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
fb8c4b14 | 3513 | if (rc == -EAGAIN) /* retry only once on 1st time connection */ { |
1da177e4 | 3514 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
50c2f753 | 3515 | if (rc == -EAGAIN) |
1da177e4 LT |
3516 | rc = -EHOSTDOWN; |
3517 | } | |
fb8c4b14 | 3518 | if (rc == 0) { |
1da177e4 | 3519 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 | 3520 | if (pSesInfo->server->tcpStatus != CifsExiting) |
1da177e4 LT |
3521 | pSesInfo->server->tcpStatus = CifsGood; |
3522 | else | |
3523 | rc = -EHOSTDOWN; | |
3524 | spin_unlock(&GlobalMid_Lock); | |
3525 | ||
3526 | } | |
ad009ac9 | 3527 | first_time = 1; |
1da177e4 LT |
3528 | } |
3529 | if (!rc) { | |
9ac00b7d | 3530 | pSesInfo->flags = 0; |
1da177e4 | 3531 | pSesInfo->capabilities = pSesInfo->server->capabilities; |
fb8c4b14 | 3532 | if (linuxExtEnabled == 0) |
1da177e4 | 3533 | pSesInfo->capabilities &= (~CAP_UNIX); |
ad009ac9 | 3534 | /* pSesInfo->sequence_number = 0;*/ |
50c2f753 SF |
3535 | cFYI(1, |
3536 | ("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", | |
1da177e4 LT |
3537 | pSesInfo->server->secMode, |
3538 | pSesInfo->server->capabilities, | |
175ec9e1 | 3539 | pSesInfo->server->timeAdj)); |
fb8c4b14 | 3540 | if (experimEnabled < 2) |
3979877e SF |
3541 | rc = CIFS_SessSetup(xid, pSesInfo, |
3542 | first_time, nls_info); | |
189acaae | 3543 | else if (extended_security |
50c2f753 | 3544 | && (pSesInfo->capabilities |
175ec9e1 | 3545 | & CAP_EXTENDED_SECURITY) |
1da177e4 | 3546 | && (pSesInfo->server->secType == NTLMSSP)) { |
189acaae | 3547 | rc = -EOPNOTSUPP; |
1da177e4 LT |
3548 | } else if (extended_security |
3549 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
3550 | && (pSesInfo->server->secType == RawNTLMSSP)) { | |
5815449d | 3551 | cFYI(1, ("NTLMSSP sesssetup")); |
1da177e4 LT |
3552 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, |
3553 | pSesInfo, | |
3554 | &ntlmv2_flag, | |
3555 | nls_info); | |
3556 | if (!rc) { | |
fb8c4b14 | 3557 | if (ntlmv2_flag) { |
50c2f753 | 3558 | char *v2_response; |
467a8f8d | 3559 | cFYI(1, ("more secure NTLM ver2 hash")); |
50c2f753 | 3560 | if (CalcNTLMv2_partial_mac_key(pSesInfo, |
1da177e4 LT |
3561 | nls_info)) { |
3562 | rc = -ENOMEM; | |
3563 | goto ss_err_exit; | |
3564 | } else | |
3565 | v2_response = kmalloc(16 + 64 /* blob */, GFP_KERNEL); | |
fb8c4b14 | 3566 | if (v2_response) { |
50c2f753 SF |
3567 | CalcNTLMv2_response(pSesInfo, |
3568 | v2_response); | |
fb8c4b14 | 3569 | /* if (first_time) |
50c2f753 SF |
3570 | cifs_calculate_ntlmv2_mac_key( |
3571 | pSesInfo->server->mac_signing_key, | |
3572 | response, ntlm_session_key,*/ | |
1da177e4 LT |
3573 | kfree(v2_response); |
3574 | /* BB Put dummy sig in SessSetup PDU? */ | |
3575 | } else { | |
3576 | rc = -ENOMEM; | |
3577 | goto ss_err_exit; | |
3578 | } | |
3579 | ||
3580 | } else { | |
3581 | SMBNTencrypt(pSesInfo->password, | |
3582 | pSesInfo->server->cryptKey, | |
3583 | ntlm_session_key); | |
3584 | ||
fb8c4b14 | 3585 | if (first_time) |
ad009ac9 | 3586 | cifs_calculate_mac_key( |
b609f06a | 3587 | &pSesInfo->server->mac_signing_key, |
ad009ac9 SF |
3588 | ntlm_session_key, |
3589 | pSesInfo->password); | |
1da177e4 LT |
3590 | } |
3591 | /* for better security the weaker lanman hash not sent | |
3592 | in AuthSessSetup so we no longer calculate it */ | |
3593 | ||
3594 | rc = CIFSNTLMSSPAuthSessSetup(xid, | |
3595 | pSesInfo, | |
3596 | ntlm_session_key, | |
3597 | ntlmv2_flag, | |
3598 | nls_info); | |
3599 | } | |
3600 | } else { /* old style NTLM 0.12 session setup */ | |
3601 | SMBNTencrypt(pSesInfo->password, | |
3602 | pSesInfo->server->cryptKey, | |
3603 | ntlm_session_key); | |
3604 | ||
fb8c4b14 | 3605 | if (first_time) |
ad009ac9 | 3606 | cifs_calculate_mac_key( |
b609f06a | 3607 | &pSesInfo->server->mac_signing_key, |
ad009ac9 SF |
3608 | ntlm_session_key, pSesInfo->password); |
3609 | ||
1da177e4 LT |
3610 | rc = CIFSSessSetup(xid, pSesInfo, |
3611 | ntlm_session_key, nls_info); | |
3612 | } | |
3613 | if (rc) { | |
fb8c4b14 | 3614 | cERROR(1, ("Send error in SessSetup = %d", rc)); |
1da177e4 | 3615 | } else { |
467a8f8d | 3616 | cFYI(1, ("CIFS Session Established successfully")); |
1da177e4 LT |
3617 | pSesInfo->status = CifsGood; |
3618 | } | |
3619 | } | |
3620 | ss_err_exit: | |
3621 | return rc; | |
3622 | } | |
3623 |