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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)); |
91cf45f0 | 163 | kernel_sock_shutdown(server->ssocket, SHUT_WR); |
fb8c4b14 | 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 */ | |
ba25f9dc | 354 | cFYI(1, ("Demultiplex PID: %d", task_pid_nr(current))); |
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 */ | |
c18c732e SF |
418 | if (pdu_length < 4) |
419 | goto incomplete_rcv; | |
420 | else | |
421 | continue; | |
1da177e4 | 422 | } else if (length <= 0) { |
0fd1ffe0 PM |
423 | if (server->tcpStatus == CifsNew) { |
424 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
425 | /* some servers kill the TCP session rather than |
426 | returning an SMB negprot error, in which | |
427 | case reconnecting here is not going to help, | |
428 | and so simply return error to mount */ | |
1da177e4 LT |
429 | break; |
430 | } | |
0fd1ffe0 | 431 | if (!try_to_freeze() && (length == -EINTR)) { |
467a8f8d | 432 | cFYI(1, ("cifsd thread killed")); |
1da177e4 LT |
433 | break; |
434 | } | |
467a8f8d | 435 | cFYI(1, ("Reconnect after unexpected peek error %d", |
57337e42 | 436 | length)); |
1da177e4 LT |
437 | cifs_reconnect(server); |
438 | csocket = server->ssocket; | |
439 | wake_up(&server->response_q); | |
440 | continue; | |
46810cbf | 441 | } else if (length < 4) { |
f01d5e14 | 442 | cFYI(1, ("less than four bytes received (%d bytes)", |
46810cbf | 443 | length)); |
f01d5e14 | 444 | pdu_length -= length; |
f01d5e14 SF |
445 | msleep(1); |
446 | goto incomplete_rcv; | |
46810cbf | 447 | } |
1da177e4 | 448 | |
70ca734a SF |
449 | /* The right amount was read from socket - 4 bytes */ |
450 | /* so we can now interpret the length field */ | |
46810cbf | 451 | |
70ca734a SF |
452 | /* the first byte big endian of the length field, |
453 | is actually not part of the length but the type | |
454 | with the most common, zero, as regular data */ | |
455 | temp = *((char *) smb_buffer); | |
46810cbf | 456 | |
fb8c4b14 | 457 | /* Note that FC 1001 length is big endian on the wire, |
70ca734a SF |
458 | but we convert it here so it is always manipulated |
459 | as host byte order */ | |
46810cbf | 460 | pdu_length = ntohl(smb_buffer->smb_buf_length); |
70ca734a SF |
461 | smb_buffer->smb_buf_length = pdu_length; |
462 | ||
467a8f8d | 463 | cFYI(1, ("rfc1002 length 0x%x", pdu_length+4)); |
46810cbf | 464 | |
70ca734a | 465 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
fb8c4b14 | 466 | continue; |
70ca734a | 467 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
467a8f8d | 468 | cFYI(1, ("Good RFC 1002 session rsp")); |
e4eb295d | 469 | continue; |
70ca734a | 470 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
fb8c4b14 | 471 | /* we get this from Windows 98 instead of |
46810cbf | 472 | an error on SMB negprot response */ |
fb8c4b14 | 473 | cFYI(1, ("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 474 | pdu_length)); |
fb8c4b14 SF |
475 | if (server->tcpStatus == CifsNew) { |
476 | /* if nack on negprot (rather than | |
46810cbf SF |
477 | ret of smb negprot error) reconnecting |
478 | not going to help, ret error to mount */ | |
479 | break; | |
480 | } else { | |
481 | /* give server a second to | |
482 | clean up before reconnect attempt */ | |
483 | msleep(1000); | |
484 | /* always try 445 first on reconnect | |
485 | since we get NACK on some if we ever | |
fb8c4b14 | 486 | connected to port 139 (the NACK is |
46810cbf SF |
487 | since we do not begin with RFC1001 |
488 | session initialize frame) */ | |
fb8c4b14 | 489 | server->addr.sockAddr.sin_port = |
46810cbf | 490 | htons(CIFS_PORT); |
1da177e4 LT |
491 | cifs_reconnect(server); |
492 | csocket = server->ssocket; | |
46810cbf | 493 | wake_up(&server->response_q); |
1da177e4 | 494 | continue; |
46810cbf | 495 | } |
70ca734a | 496 | } else if (temp != (char) 0) { |
fb8c4b14 | 497 | cERROR(1, ("Unknown RFC 1002 frame")); |
70ca734a SF |
498 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
499 | length); | |
46810cbf SF |
500 | cifs_reconnect(server); |
501 | csocket = server->ssocket; | |
502 | continue; | |
e4eb295d SF |
503 | } |
504 | ||
505 | /* else we have an SMB response */ | |
fb8c4b14 | 506 | if ((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || |
26f57364 | 507 | (pdu_length < sizeof(struct smb_hdr) - 1 - 4)) { |
e4eb295d | 508 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 509 | length, pdu_length+4)); |
e4eb295d SF |
510 | cifs_reconnect(server); |
511 | csocket = server->ssocket; | |
512 | wake_up(&server->response_q); | |
513 | continue; | |
fb8c4b14 | 514 | } |
e4eb295d SF |
515 | |
516 | /* else length ok */ | |
517 | reconnect = 0; | |
518 | ||
fb8c4b14 | 519 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
e4eb295d SF |
520 | isLargeBuf = TRUE; |
521 | memcpy(bigbuf, smallbuf, 4); | |
522 | smb_buffer = bigbuf; | |
523 | } | |
524 | length = 0; | |
525 | iov.iov_base = 4 + (char *)smb_buffer; | |
526 | iov.iov_len = pdu_length; | |
fb8c4b14 | 527 | for (total_read = 0; total_read < pdu_length; |
e4eb295d SF |
528 | total_read += length) { |
529 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
530 | pdu_length - total_read, 0); | |
26f57364 | 531 | if (kthread_should_stop() || |
e4eb295d SF |
532 | (length == -EINTR)) { |
533 | /* then will exit */ | |
534 | reconnect = 2; | |
535 | break; | |
536 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
537 | cifs_reconnect(server); |
538 | csocket = server->ssocket; | |
fb8c4b14 | 539 | /* Reconnect wakes up rspns q */ |
e4eb295d SF |
540 | /* Now we will reread sock */ |
541 | reconnect = 1; | |
542 | break; | |
fb8c4b14 | 543 | } else if ((length == -ERESTARTSYS) || |
e4eb295d SF |
544 | (length == -EAGAIN)) { |
545 | msleep(1); /* minimum sleep to prevent looping, | |
fb8c4b14 | 546 | allowing socket to clear and app |
e4eb295d SF |
547 | threads to set tcpStatus |
548 | CifsNeedReconnect if server hung*/ | |
c18c732e | 549 | length = 0; |
46810cbf | 550 | continue; |
e4eb295d | 551 | } else if (length <= 0) { |
fb8c4b14 | 552 | cERROR(1, ("Received no data, expecting %d", |
e4eb295d SF |
553 | pdu_length - total_read)); |
554 | cifs_reconnect(server); | |
555 | csocket = server->ssocket; | |
556 | reconnect = 1; | |
557 | break; | |
46810cbf | 558 | } |
e4eb295d | 559 | } |
fb8c4b14 | 560 | if (reconnect == 2) |
e4eb295d | 561 | break; |
fb8c4b14 | 562 | else if (reconnect == 1) |
e4eb295d | 563 | continue; |
1da177e4 | 564 | |
e4eb295d | 565 | length += 4; /* account for rfc1002 hdr */ |
50c2f753 | 566 | |
09d1db5c | 567 | |
e4eb295d | 568 | dump_smb(smb_buffer, length); |
184ed211 | 569 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 570 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
571 | continue; |
572 | } | |
1da177e4 | 573 | |
e4eb295d SF |
574 | |
575 | task_to_wake = NULL; | |
576 | spin_lock(&GlobalMid_Lock); | |
577 | list_for_each(tmp, &server->pending_mid_q) { | |
578 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
579 | ||
50c2f753 | 580 | if ((mid_entry->mid == smb_buffer->Mid) && |
e4eb295d SF |
581 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && |
582 | (mid_entry->command == smb_buffer->Command)) { | |
fb8c4b14 | 583 | if (check2ndT2(smb_buffer,server->maxBuf) > 0) { |
e4eb295d | 584 | /* We have a multipart transact2 resp */ |
cd63499c | 585 | isMultiRsp = TRUE; |
fb8c4b14 | 586 | if (mid_entry->resp_buf) { |
e4eb295d | 587 | /* merge response - fix up 1st*/ |
50c2f753 | 588 | if (coalesce_t2(smb_buffer, |
e4eb295d | 589 | mid_entry->resp_buf)) { |
3979877e | 590 | mid_entry->multiRsp = 1; |
e4eb295d SF |
591 | break; |
592 | } else { | |
593 | /* all parts received */ | |
3979877e | 594 | mid_entry->multiEnd = 1; |
50c2f753 | 595 | goto multi_t2_fnd; |
e4eb295d SF |
596 | } |
597 | } else { | |
fb8c4b14 | 598 | if (!isLargeBuf) { |
e4eb295d SF |
599 | cERROR(1,("1st trans2 resp needs bigbuf")); |
600 | /* BB maybe we can fix this up, switch | |
50c2f753 | 601 | to already allocated large buffer? */ |
e4eb295d | 602 | } else { |
cd63499c | 603 | /* Have first buffer */ |
e4eb295d SF |
604 | mid_entry->resp_buf = |
605 | smb_buffer; | |
606 | mid_entry->largeBuf = 1; | |
e4eb295d SF |
607 | bigbuf = NULL; |
608 | } | |
609 | } | |
610 | break; | |
50c2f753 | 611 | } |
e4eb295d | 612 | mid_entry->resp_buf = smb_buffer; |
fb8c4b14 | 613 | if (isLargeBuf) |
e4eb295d | 614 | mid_entry->largeBuf = 1; |
46810cbf | 615 | else |
e4eb295d SF |
616 | mid_entry->largeBuf = 0; |
617 | multi_t2_fnd: | |
618 | task_to_wake = mid_entry->tsk; | |
619 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
620 | #ifdef CONFIG_CIFS_STATS2 |
621 | mid_entry->when_received = jiffies; | |
622 | #endif | |
3a5ff61c SF |
623 | /* so we do not time out requests to server |
624 | which is still responding (since server could | |
625 | be busy but not dead) */ | |
626 | server->lstrp = jiffies; | |
e4eb295d | 627 | break; |
46810cbf | 628 | } |
1da177e4 | 629 | } |
e4eb295d SF |
630 | spin_unlock(&GlobalMid_Lock); |
631 | if (task_to_wake) { | |
cd63499c | 632 | /* Was previous buf put in mpx struct for multi-rsp? */ |
fb8c4b14 | 633 | if (!isMultiRsp) { |
cd63499c | 634 | /* smb buffer will be freed by user thread */ |
26f57364 | 635 | if (isLargeBuf) |
cd63499c | 636 | bigbuf = NULL; |
26f57364 | 637 | else |
cd63499c SF |
638 | smallbuf = NULL; |
639 | } | |
e4eb295d | 640 | wake_up_process(task_to_wake); |
d7c8c94d | 641 | } else if ((is_valid_oplock_break(smb_buffer, server) == FALSE) |
50c2f753 SF |
642 | && (isMultiRsp == FALSE)) { |
643 | cERROR(1, ("No task to wake, unknown frame received! " | |
644 | "NumMids %d", midCount.counter)); | |
645 | cifs_dump_mem("Received Data is: ", (char *)smb_buffer, | |
70ca734a | 646 | sizeof(struct smb_hdr)); |
3979877e SF |
647 | #ifdef CONFIG_CIFS_DEBUG2 |
648 | cifs_dump_detail(smb_buffer); | |
649 | cifs_dump_mids(server); | |
650 | #endif /* CIFS_DEBUG2 */ | |
50c2f753 | 651 | |
e4eb295d SF |
652 | } |
653 | } /* end while !EXITING */ | |
654 | ||
1da177e4 LT |
655 | spin_lock(&GlobalMid_Lock); |
656 | server->tcpStatus = CifsExiting; | |
657 | server->tsk = NULL; | |
31ca3bc3 SF |
658 | /* check if we have blocked requests that need to free */ |
659 | /* Note that cifs_max_pending is normally 50, but | |
660 | can be set at module install time to as little as two */ | |
fb8c4b14 | 661 | if (atomic_read(&server->inFlight) >= cifs_max_pending) |
31ca3bc3 SF |
662 | atomic_set(&server->inFlight, cifs_max_pending - 1); |
663 | /* We do not want to set the max_pending too low or we | |
664 | could end up with the counter going negative */ | |
1da177e4 | 665 | spin_unlock(&GlobalMid_Lock); |
50c2f753 | 666 | /* Although there should not be any requests blocked on |
1da177e4 | 667 | this queue it can not hurt to be paranoid and try to wake up requests |
09d1db5c | 668 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
669 | to the same server - they now will see the session is in exit state |
670 | and get out of SendReceive. */ | |
671 | wake_up_all(&server->request_q); | |
672 | /* give those requests time to exit */ | |
b8643e1b | 673 | msleep(125); |
50c2f753 | 674 | |
fb8c4b14 | 675 | if (server->ssocket) { |
1da177e4 LT |
676 | sock_release(csocket); |
677 | server->ssocket = NULL; | |
678 | } | |
b8643e1b | 679 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
a8a11d39 MK |
680 | cifs_buf_release(bigbuf); |
681 | if (smallbuf) /* no sense logging a debug message if NULL */ | |
b8643e1b | 682 | cifs_small_buf_release(smallbuf); |
1da177e4 LT |
683 | |
684 | read_lock(&GlobalSMBSeslock); | |
685 | if (list_empty(&server->pending_mid_q)) { | |
09d1db5c SF |
686 | /* loop through server session structures attached to this and |
687 | mark them dead */ | |
1da177e4 LT |
688 | list_for_each(tmp, &GlobalSMBSessionList) { |
689 | ses = | |
690 | list_entry(tmp, struct cifsSesInfo, | |
691 | cifsSessionList); | |
692 | if (ses->server == server) { | |
693 | ses->status = CifsExiting; | |
694 | ses->server = NULL; | |
695 | } | |
696 | } | |
697 | read_unlock(&GlobalSMBSeslock); | |
698 | } else { | |
31ca3bc3 SF |
699 | /* although we can not zero the server struct pointer yet, |
700 | since there are active requests which may depnd on them, | |
701 | mark the corresponding SMB sessions as exiting too */ | |
702 | list_for_each(tmp, &GlobalSMBSessionList) { | |
703 | ses = list_entry(tmp, struct cifsSesInfo, | |
704 | cifsSessionList); | |
26f57364 | 705 | if (ses->server == server) |
31ca3bc3 | 706 | ses->status = CifsExiting; |
31ca3bc3 SF |
707 | } |
708 | ||
1da177e4 LT |
709 | spin_lock(&GlobalMid_Lock); |
710 | list_for_each(tmp, &server->pending_mid_q) { | |
711 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
712 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
50c2f753 SF |
713 | cFYI(1, ("Clearing Mid 0x%x - waking up ", |
714 | mid_entry->mid)); | |
1da177e4 | 715 | task_to_wake = mid_entry->tsk; |
26f57364 | 716 | if (task_to_wake) |
1da177e4 | 717 | wake_up_process(task_to_wake); |
1da177e4 LT |
718 | } |
719 | } | |
720 | spin_unlock(&GlobalMid_Lock); | |
721 | read_unlock(&GlobalSMBSeslock); | |
1da177e4 | 722 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 723 | msleep(125); |
1da177e4 LT |
724 | } |
725 | ||
f191401f | 726 | if (!list_empty(&server->pending_mid_q)) { |
50c2f753 | 727 | /* mpx threads have not exited yet give them |
1da177e4 | 728 | at least the smb send timeout time for long ops */ |
31ca3bc3 SF |
729 | /* due to delays on oplock break requests, we need |
730 | to wait at least 45 seconds before giving up | |
731 | on a request getting a response and going ahead | |
732 | and killing cifsd */ | |
1da177e4 | 733 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 734 | msleep(46000); |
1da177e4 LT |
735 | /* if threads still have not exited they are probably never |
736 | coming home not much else we can do but free the memory */ | |
737 | } | |
1da177e4 LT |
738 | |
739 | write_lock(&GlobalSMBSeslock); | |
740 | atomic_dec(&tcpSesAllocCount); | |
741 | length = tcpSesAllocCount.counter; | |
31ca3bc3 SF |
742 | |
743 | /* last chance to mark ses pointers invalid | |
744 | if there are any pointing to this (e.g | |
50c2f753 | 745 | if a crazy root user tried to kill cifsd |
31ca3bc3 SF |
746 | kernel thread explicitly this might happen) */ |
747 | list_for_each(tmp, &GlobalSMBSessionList) { | |
748 | ses = list_entry(tmp, struct cifsSesInfo, | |
749 | cifsSessionList); | |
26f57364 | 750 | if (ses->server == server) |
31ca3bc3 | 751 | ses->server = NULL; |
31ca3bc3 | 752 | } |
1da177e4 | 753 | write_unlock(&GlobalSMBSeslock); |
31ca3bc3 SF |
754 | |
755 | kfree(server); | |
26f57364 SF |
756 | if (length > 0) |
757 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, | |
758 | GFP_KERNEL); | |
50c2f753 | 759 | |
1da177e4 LT |
760 | return 0; |
761 | } | |
762 | ||
1da177e4 | 763 | static int |
50c2f753 SF |
764 | cifs_parse_mount_options(char *options, const char *devname, |
765 | struct smb_vol *vol) | |
1da177e4 LT |
766 | { |
767 | char *value; | |
768 | char *data; | |
769 | unsigned int temp_len, i, j; | |
770 | char separator[2]; | |
771 | ||
772 | separator[0] = ','; | |
50c2f753 | 773 | separator[1] = 0; |
1da177e4 | 774 | |
12e36b2f | 775 | if (Local_System_Name[0] != 0) |
50c2f753 | 776 | memcpy(vol->source_rfc1001_name, Local_System_Name, 15); |
2cd646a2 | 777 | else { |
12e36b2f | 778 | char *nodename = utsname()->nodename; |
50c2f753 SF |
779 | int n = strnlen(nodename, 15); |
780 | memset(vol->source_rfc1001_name, 0x20, 15); | |
781 | for (i = 0; i < n; i++) { | |
2cd646a2 SF |
782 | /* does not have to be perfect mapping since field is |
783 | informational, only used for servers that do not support | |
784 | port 445 and it can be overridden at mount time */ | |
12e36b2f | 785 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
2cd646a2 | 786 | } |
1da177e4 LT |
787 | } |
788 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
789 | /* null target name indicates to use *SMBSERVR default called name |
790 | if we end up sending RFC1001 session initialize */ | |
791 | vol->target_rfc1001_name[0] = 0; | |
1da177e4 LT |
792 | vol->linux_uid = current->uid; /* current->euid instead? */ |
793 | vol->linux_gid = current->gid; | |
794 | vol->dir_mode = S_IRWXUGO; | |
795 | /* 2767 perms indicate mandatory locking support */ | |
7505e052 | 796 | vol->file_mode = (S_IRWXUGO | S_ISGID) & (~S_IXGRP); |
1da177e4 LT |
797 | |
798 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
799 | vol->rw = TRUE; | |
ac67055e JA |
800 | /* default is always to request posix paths. */ |
801 | vol->posix_paths = 1; | |
802 | ||
1da177e4 LT |
803 | if (!options) |
804 | return 1; | |
805 | ||
50c2f753 | 806 | if (strncmp(options, "sep=", 4) == 0) { |
fb8c4b14 | 807 | if (options[4] != 0) { |
1da177e4 LT |
808 | separator[0] = options[4]; |
809 | options += 5; | |
810 | } else { | |
467a8f8d | 811 | cFYI(1, ("Null separator not allowed")); |
1da177e4 LT |
812 | } |
813 | } | |
50c2f753 | 814 | |
1da177e4 LT |
815 | while ((data = strsep(&options, separator)) != NULL) { |
816 | if (!*data) | |
817 | continue; | |
818 | if ((value = strchr(data, '=')) != NULL) | |
819 | *value++ = '\0'; | |
820 | ||
50c2f753 SF |
821 | /* Have to parse this before we parse for "user" */ |
822 | if (strnicmp(data, "user_xattr", 10) == 0) { | |
1da177e4 | 823 | vol->no_xattr = 0; |
50c2f753 | 824 | } else if (strnicmp(data, "nouser_xattr", 12) == 0) { |
1da177e4 LT |
825 | vol->no_xattr = 1; |
826 | } else if (strnicmp(data, "user", 4) == 0) { | |
4b952a9b | 827 | if (!value) { |
1da177e4 LT |
828 | printk(KERN_WARNING |
829 | "CIFS: invalid or missing username\n"); | |
830 | return 1; /* needs_arg; */ | |
fb8c4b14 | 831 | } else if (!*value) { |
4b952a9b SF |
832 | /* null user, ie anonymous, authentication */ |
833 | vol->nullauth = 1; | |
1da177e4 LT |
834 | } |
835 | if (strnlen(value, 200) < 200) { | |
836 | vol->username = value; | |
837 | } else { | |
838 | printk(KERN_WARNING "CIFS: username too long\n"); | |
839 | return 1; | |
840 | } | |
841 | } else if (strnicmp(data, "pass", 4) == 0) { | |
842 | if (!value) { | |
843 | vol->password = NULL; | |
844 | continue; | |
fb8c4b14 | 845 | } else if (value[0] == 0) { |
1da177e4 LT |
846 | /* check if string begins with double comma |
847 | since that would mean the password really | |
848 | does start with a comma, and would not | |
849 | indicate an empty string */ | |
fb8c4b14 | 850 | if (value[1] != separator[0]) { |
1da177e4 LT |
851 | vol->password = NULL; |
852 | continue; | |
853 | } | |
854 | } | |
855 | temp_len = strlen(value); | |
856 | /* removed password length check, NTLM passwords | |
857 | can be arbitrarily long */ | |
858 | ||
50c2f753 | 859 | /* if comma in password, the string will be |
1da177e4 LT |
860 | prematurely null terminated. Commas in password are |
861 | specified across the cifs mount interface by a double | |
862 | comma ie ,, and a comma used as in other cases ie ',' | |
863 | as a parameter delimiter/separator is single and due | |
864 | to the strsep above is temporarily zeroed. */ | |
865 | ||
866 | /* NB: password legally can have multiple commas and | |
867 | the only illegal character in a password is null */ | |
868 | ||
50c2f753 | 869 | if ((value[temp_len] == 0) && |
09d1db5c | 870 | (value[temp_len+1] == separator[0])) { |
1da177e4 LT |
871 | /* reinsert comma */ |
872 | value[temp_len] = separator[0]; | |
50c2f753 SF |
873 | temp_len += 2; /* move after second comma */ |
874 | while (value[temp_len] != 0) { | |
1da177e4 | 875 | if (value[temp_len] == separator[0]) { |
50c2f753 | 876 | if (value[temp_len+1] == |
09d1db5c SF |
877 | separator[0]) { |
878 | /* skip second comma */ | |
879 | temp_len++; | |
50c2f753 | 880 | } else { |
1da177e4 LT |
881 | /* single comma indicating start |
882 | of next parm */ | |
883 | break; | |
884 | } | |
885 | } | |
886 | temp_len++; | |
887 | } | |
fb8c4b14 | 888 | if (value[temp_len] == 0) { |
1da177e4 LT |
889 | options = NULL; |
890 | } else { | |
891 | value[temp_len] = 0; | |
892 | /* point option to start of next parm */ | |
893 | options = value + temp_len + 1; | |
894 | } | |
50c2f753 | 895 | /* go from value to value + temp_len condensing |
1da177e4 LT |
896 | double commas to singles. Note that this ends up |
897 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 898 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
fb8c4b14 | 899 | if (vol->password == NULL) { |
50c2f753 SF |
900 | printk(KERN_WARNING "CIFS: no memory " |
901 | "for password\n"); | |
433dc24f SF |
902 | return 1; |
903 | } | |
50c2f753 | 904 | for (i = 0, j = 0; i < temp_len; i++, j++) { |
1da177e4 | 905 | vol->password[j] = value[i]; |
fb8c4b14 | 906 | if (value[i] == separator[0] |
09d1db5c | 907 | && value[i+1] == separator[0]) { |
1da177e4 LT |
908 | /* skip second comma */ |
909 | i++; | |
910 | } | |
911 | } | |
912 | vol->password[j] = 0; | |
913 | } else { | |
e915fc49 | 914 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
fb8c4b14 | 915 | if (vol->password == NULL) { |
50c2f753 SF |
916 | printk(KERN_WARNING "CIFS: no memory " |
917 | "for password\n"); | |
433dc24f SF |
918 | return 1; |
919 | } | |
1da177e4 LT |
920 | strcpy(vol->password, value); |
921 | } | |
922 | } else if (strnicmp(data, "ip", 2) == 0) { | |
923 | if (!value || !*value) { | |
924 | vol->UNCip = NULL; | |
925 | } else if (strnlen(value, 35) < 35) { | |
926 | vol->UNCip = value; | |
927 | } else { | |
50c2f753 SF |
928 | printk(KERN_WARNING "CIFS: ip address " |
929 | "too long\n"); | |
1da177e4 LT |
930 | return 1; |
931 | } | |
50c2f753 SF |
932 | } else if (strnicmp(data, "sec", 3) == 0) { |
933 | if (!value || !*value) { | |
934 | cERROR(1, ("no security value specified")); | |
935 | continue; | |
936 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
937 | vol->secFlg |= CIFSSEC_MAY_KRB5 | | |
189acaae | 938 | CIFSSEC_MUST_SIGN; |
bf820679 | 939 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
50c2f753 SF |
940 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
941 | CIFSSEC_MAY_KRB5; */ | |
942 | cERROR(1, ("Krb5 cifs privacy not supported")); | |
bf820679 SF |
943 | return 1; |
944 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 945 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
bf820679 | 946 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 947 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 948 | CIFSSEC_MUST_SIGN; |
bf820679 | 949 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 950 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 951 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 952 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 953 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
954 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
955 | /* ntlm is default so can be turned off too */ | |
750d1151 | 956 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 957 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 958 | /* BB is there a better way to do this? */ |
750d1151 | 959 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
960 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
961 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
50c2f753 | 962 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 963 | #endif |
bf820679 | 964 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 965 | vol->nullauth = 1; |
50c2f753 SF |
966 | } else { |
967 | cERROR(1, ("bad security option: %s", value)); | |
968 | return 1; | |
969 | } | |
1da177e4 LT |
970 | } else if ((strnicmp(data, "unc", 3) == 0) |
971 | || (strnicmp(data, "target", 6) == 0) | |
972 | || (strnicmp(data, "path", 4) == 0)) { | |
973 | if (!value || !*value) { | |
50c2f753 SF |
974 | printk(KERN_WARNING "CIFS: invalid path to " |
975 | "network resource\n"); | |
1da177e4 LT |
976 | return 1; /* needs_arg; */ |
977 | } | |
978 | if ((temp_len = strnlen(value, 300)) < 300) { | |
50c2f753 | 979 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 980 | if (vol->UNC == NULL) |
1da177e4 | 981 | return 1; |
50c2f753 | 982 | strcpy(vol->UNC, value); |
1da177e4 LT |
983 | if (strncmp(vol->UNC, "//", 2) == 0) { |
984 | vol->UNC[0] = '\\'; | |
985 | vol->UNC[1] = '\\'; | |
50c2f753 | 986 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
1da177e4 | 987 | printk(KERN_WARNING |
50c2f753 SF |
988 | "CIFS: UNC Path does not begin " |
989 | "with // or \\\\ \n"); | |
1da177e4 LT |
990 | return 1; |
991 | } | |
992 | } else { | |
993 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
994 | return 1; | |
995 | } | |
996 | } else if ((strnicmp(data, "domain", 3) == 0) | |
997 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
998 | if (!value || !*value) { | |
999 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
1000 | return 1; /* needs_arg; */ | |
1001 | } | |
1002 | /* BB are there cases in which a comma can be valid in | |
1003 | a domain name and need special handling? */ | |
3979877e | 1004 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
1005 | vol->domainname = value; |
1006 | cFYI(1, ("Domain name set")); | |
1007 | } else { | |
50c2f753 SF |
1008 | printk(KERN_WARNING "CIFS: domain name too " |
1009 | "long\n"); | |
1da177e4 LT |
1010 | return 1; |
1011 | } | |
50c2f753 SF |
1012 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
1013 | if (!value || !*value) { | |
1014 | printk(KERN_WARNING | |
1015 | "CIFS: invalid path prefix\n"); | |
1016 | return 1; /* needs_argument */ | |
1017 | } | |
1018 | if ((temp_len = strnlen(value, 1024)) < 1024) { | |
4523cc30 | 1019 | if (value[0] != '/') |
2fe87f02 | 1020 | temp_len++; /* missing leading slash */ |
50c2f753 SF |
1021 | vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); |
1022 | if (vol->prepath == NULL) | |
1023 | return 1; | |
4523cc30 | 1024 | if (value[0] != '/') { |
2fe87f02 | 1025 | vol->prepath[0] = '/'; |
50c2f753 | 1026 | strcpy(vol->prepath+1, value); |
2fe87f02 | 1027 | } else |
50c2f753 SF |
1028 | strcpy(vol->prepath, value); |
1029 | cFYI(1, ("prefix path %s", vol->prepath)); | |
1030 | } else { | |
1031 | printk(KERN_WARNING "CIFS: prefix too long\n"); | |
1032 | return 1; | |
1033 | } | |
1da177e4 LT |
1034 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
1035 | if (!value || !*value) { | |
63135e08 SF |
1036 | printk(KERN_WARNING "CIFS: invalid iocharset " |
1037 | "specified\n"); | |
1da177e4 LT |
1038 | return 1; /* needs_arg; */ |
1039 | } | |
1040 | if (strnlen(value, 65) < 65) { | |
50c2f753 | 1041 | if (strnicmp(value, "default", 7)) |
1da177e4 | 1042 | vol->iocharset = value; |
50c2f753 SF |
1043 | /* if iocharset not set then load_nls_default |
1044 | is used by caller */ | |
1045 | cFYI(1, ("iocharset set to %s", value)); | |
1da177e4 | 1046 | } else { |
63135e08 SF |
1047 | printk(KERN_WARNING "CIFS: iocharset name " |
1048 | "too long.\n"); | |
1da177e4 LT |
1049 | return 1; |
1050 | } | |
1051 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1052 | if (value && *value) { | |
1053 | vol->linux_uid = | |
1054 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1055 | vol->override_uid = 1; |
1da177e4 LT |
1056 | } |
1057 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1058 | if (value && *value) { | |
1059 | vol->linux_gid = | |
1060 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1061 | vol->override_gid = 1; |
1da177e4 LT |
1062 | } |
1063 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1064 | if (value && *value) { | |
1065 | vol->file_mode = | |
1066 | simple_strtoul(value, &value, 0); | |
1067 | } | |
1068 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1069 | if (value && *value) { | |
1070 | vol->dir_mode = | |
1071 | simple_strtoul(value, &value, 0); | |
1072 | } | |
1073 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1074 | if (value && *value) { | |
1075 | vol->dir_mode = | |
1076 | simple_strtoul(value, &value, 0); | |
1077 | } | |
1078 | } else if (strnicmp(data, "port", 4) == 0) { | |
1079 | if (value && *value) { | |
1080 | vol->port = | |
1081 | simple_strtoul(value, &value, 0); | |
1082 | } | |
1083 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1084 | if (value && *value) { | |
1085 | vol->rsize = | |
1086 | simple_strtoul(value, &value, 0); | |
1087 | } | |
1088 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1089 | if (value && *value) { | |
1090 | vol->wsize = | |
1091 | simple_strtoul(value, &value, 0); | |
1092 | } | |
1093 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1094 | if (value && *value) { | |
1095 | vol->sockopt = | |
1096 | simple_strtoul(value, &value, 0); | |
1097 | } | |
1098 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1099 | if (!value || !*value || (*value == ' ')) { | |
63135e08 | 1100 | cFYI(1, ("invalid (empty) netbiosname")); |
1da177e4 | 1101 | } else { |
50c2f753 SF |
1102 | memset(vol->source_rfc1001_name, 0x20, 15); |
1103 | for (i = 0; i < 15; i++) { | |
1104 | /* BB are there cases in which a comma can be | |
1da177e4 LT |
1105 | valid in this workstation netbios name (and need |
1106 | special handling)? */ | |
1107 | ||
1108 | /* We do not uppercase netbiosname for user */ | |
50c2f753 | 1109 | if (value[i] == 0) |
1da177e4 | 1110 | break; |
50c2f753 SF |
1111 | else |
1112 | vol->source_rfc1001_name[i] = | |
1113 | value[i]; | |
1da177e4 LT |
1114 | } |
1115 | /* The string has 16th byte zero still from | |
1116 | set at top of the function */ | |
50c2f753 SF |
1117 | if ((i == 15) && (value[i] != 0)) |
1118 | printk(KERN_WARNING "CIFS: netbiosname" | |
1119 | " longer than 15 truncated.\n"); | |
a10faeb2 SF |
1120 | } |
1121 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1122 | /* servernetbiosname specified override *SMBSERVER */ | |
1123 | if (!value || !*value || (*value == ' ')) { | |
467a8f8d | 1124 | cFYI(1, ("empty server netbiosname specified")); |
a10faeb2 SF |
1125 | } else { |
1126 | /* last byte, type, is 0x20 for servr type */ | |
50c2f753 | 1127 | memset(vol->target_rfc1001_name, 0x20, 16); |
a10faeb2 | 1128 | |
50c2f753 | 1129 | for (i = 0; i < 15; i++) { |
a10faeb2 | 1130 | /* BB are there cases in which a comma can be |
50c2f753 SF |
1131 | valid in this workstation netbios name |
1132 | (and need special handling)? */ | |
a10faeb2 | 1133 | |
50c2f753 SF |
1134 | /* user or mount helper must uppercase |
1135 | the netbiosname */ | |
1136 | if (value[i] == 0) | |
a10faeb2 SF |
1137 | break; |
1138 | else | |
50c2f753 SF |
1139 | vol->target_rfc1001_name[i] = |
1140 | value[i]; | |
a10faeb2 SF |
1141 | } |
1142 | /* The string has 16th byte zero still from | |
1143 | set at top of the function */ | |
50c2f753 SF |
1144 | if ((i == 15) && (value[i] != 0)) |
1145 | printk(KERN_WARNING "CIFS: server net" | |
1146 | "biosname longer than 15 truncated.\n"); | |
1da177e4 LT |
1147 | } |
1148 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1149 | /* ignore */ | |
1150 | } else if (strnicmp(data, "version", 3) == 0) { | |
1151 | /* ignore */ | |
50c2f753 | 1152 | } else if (strnicmp(data, "guest", 5) == 0) { |
1da177e4 LT |
1153 | /* ignore */ |
1154 | } else if (strnicmp(data, "rw", 2) == 0) { | |
1155 | vol->rw = TRUE; | |
1156 | } else if ((strnicmp(data, "suid", 4) == 0) || | |
1157 | (strnicmp(data, "nosuid", 6) == 0) || | |
1158 | (strnicmp(data, "exec", 4) == 0) || | |
1159 | (strnicmp(data, "noexec", 6) == 0) || | |
1160 | (strnicmp(data, "nodev", 5) == 0) || | |
1161 | (strnicmp(data, "noauto", 6) == 0) || | |
1162 | (strnicmp(data, "dev", 3) == 0)) { | |
1163 | /* The mount tool or mount.cifs helper (if present) | |
50c2f753 SF |
1164 | uses these opts to set flags, and the flags are read |
1165 | by the kernel vfs layer before we get here (ie | |
1166 | before read super) so there is no point trying to | |
1167 | parse these options again and set anything and it | |
1168 | is ok to just ignore them */ | |
1da177e4 LT |
1169 | continue; |
1170 | } else if (strnicmp(data, "ro", 2) == 0) { | |
1171 | vol->rw = FALSE; | |
1172 | } else if (strnicmp(data, "hard", 4) == 0) { | |
1173 | vol->retry = 1; | |
1174 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1175 | vol->retry = 0; | |
1176 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1177 | vol->noperm = 0; | |
1178 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1179 | vol->noperm = 1; | |
6a0b4824 SF |
1180 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1181 | vol->remap = 1; | |
1182 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1183 | vol->remap = 0; | |
50c2f753 SF |
1184 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1185 | vol->sfu_emul = 1; | |
1186 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1187 | vol->sfu_emul = 0; | |
ac67055e JA |
1188 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1189 | vol->posix_paths = 1; | |
1190 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1191 | vol->posix_paths = 0; | |
c18c842b SF |
1192 | } else if (strnicmp(data, "nounix", 6) == 0) { |
1193 | vol->no_linux_ext = 1; | |
1194 | } else if (strnicmp(data, "nolinux", 7) == 0) { | |
1195 | vol->no_linux_ext = 1; | |
50c2f753 | 1196 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
a10faeb2 | 1197 | (strnicmp(data, "ignorecase", 10) == 0)) { |
50c2f753 | 1198 | vol->nocase = 1; |
c46fa8ac SF |
1199 | } else if (strnicmp(data, "brl", 3) == 0) { |
1200 | vol->nobrl = 0; | |
50c2f753 | 1201 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1202 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1203 | vol->nobrl = 1; |
d3485d37 SF |
1204 | /* turn off mandatory locking in mode |
1205 | if remote locking is turned off since the | |
1206 | local vfs will do advisory */ | |
50c2f753 SF |
1207 | if (vol->file_mode == |
1208 | (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
d3485d37 | 1209 | vol->file_mode = S_IALLUGO; |
1da177e4 LT |
1210 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1211 | vol->setuids = 1; | |
1212 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1213 | vol->setuids = 0; | |
1214 | } else if (strnicmp(data, "nohard", 6) == 0) { | |
1215 | vol->retry = 0; | |
1216 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1217 | vol->retry = 1; | |
1218 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1219 | vol->intr = 0; | |
1220 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1221 | vol->intr = 1; | |
50c2f753 | 1222 | } else if (strnicmp(data, "serverino", 7) == 0) { |
1da177e4 | 1223 | vol->server_ino = 1; |
50c2f753 | 1224 | } else if (strnicmp(data, "noserverino", 9) == 0) { |
1da177e4 | 1225 | vol->server_ino = 0; |
50c2f753 | 1226 | } else if (strnicmp(data, "cifsacl", 7) == 0) { |
0a4b92c0 SF |
1227 | vol->cifs_acl = 1; |
1228 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1229 | vol->cifs_acl = 0; | |
50c2f753 | 1230 | } else if (strnicmp(data, "acl", 3) == 0) { |
1da177e4 | 1231 | vol->no_psx_acl = 0; |
50c2f753 | 1232 | } else if (strnicmp(data, "noacl", 5) == 0) { |
1da177e4 | 1233 | vol->no_psx_acl = 1; |
50c2f753 | 1234 | } else if (strnicmp(data, "sign", 4) == 0) { |
750d1151 SF |
1235 | vol->secFlg |= CIFSSEC_MUST_SIGN; |
1236 | /* } else if (strnicmp(data, "seal",4) == 0) { | |
1237 | vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
50c2f753 | 1238 | } else if (strnicmp(data, "direct", 6) == 0) { |
1da177e4 | 1239 | vol->direct_io = 1; |
50c2f753 | 1240 | } else if (strnicmp(data, "forcedirectio", 13) == 0) { |
1da177e4 | 1241 | vol->direct_io = 1; |
50c2f753 | 1242 | } else if (strnicmp(data, "in6_addr", 8) == 0) { |
1da177e4 LT |
1243 | if (!value || !*value) { |
1244 | vol->in6_addr = NULL; | |
1245 | } else if (strnlen(value, 49) == 48) { | |
1246 | vol->in6_addr = value; | |
1247 | } else { | |
50c2f753 SF |
1248 | printk(KERN_WARNING "CIFS: ip v6 address not " |
1249 | "48 characters long\n"); | |
1da177e4 LT |
1250 | return 1; |
1251 | } | |
1252 | } else if (strnicmp(data, "noac", 4) == 0) { | |
50c2f753 SF |
1253 | printk(KERN_WARNING "CIFS: Mount option noac not " |
1254 | "supported. Instead set " | |
1255 | "/proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1da177e4 | 1256 | } else |
50c2f753 SF |
1257 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n", |
1258 | data); | |
1da177e4 LT |
1259 | } |
1260 | if (vol->UNC == NULL) { | |
4523cc30 | 1261 | if (devname == NULL) { |
50c2f753 SF |
1262 | printk(KERN_WARNING "CIFS: Missing UNC name for mount " |
1263 | "target\n"); | |
1da177e4 LT |
1264 | return 1; |
1265 | } | |
1266 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
50c2f753 | 1267 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1268 | if (vol->UNC == NULL) |
1da177e4 | 1269 | return 1; |
50c2f753 | 1270 | strcpy(vol->UNC, devname); |
1da177e4 LT |
1271 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1272 | vol->UNC[0] = '\\'; | |
1273 | vol->UNC[1] = '\\'; | |
1274 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
50c2f753 SF |
1275 | printk(KERN_WARNING "CIFS: UNC Path does not " |
1276 | "begin with // or \\\\ \n"); | |
1da177e4 LT |
1277 | return 1; |
1278 | } | |
1279 | } else { | |
1280 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1281 | return 1; | |
1282 | } | |
1283 | } | |
fb8c4b14 | 1284 | if (vol->UNCip == NULL) |
1da177e4 LT |
1285 | vol->UNCip = &vol->UNC[2]; |
1286 | ||
1287 | return 0; | |
1288 | } | |
1289 | ||
1290 | static struct cifsSesInfo * | |
50c2f753 | 1291 | cifs_find_tcp_session(struct in_addr *target_ip_addr, |
1da177e4 LT |
1292 | struct in6_addr *target_ip6_addr, |
1293 | char *userName, struct TCP_Server_Info **psrvTcp) | |
1294 | { | |
1295 | struct list_head *tmp; | |
1296 | struct cifsSesInfo *ses; | |
1297 | *psrvTcp = NULL; | |
1298 | read_lock(&GlobalSMBSeslock); | |
1299 | ||
1300 | list_for_each(tmp, &GlobalSMBSessionList) { | |
1301 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
1302 | if (ses->server) { | |
50c2f753 | 1303 | if ((target_ip_addr && |
1da177e4 LT |
1304 | (ses->server->addr.sockAddr.sin_addr.s_addr |
1305 | == target_ip_addr->s_addr)) || (target_ip6_addr | |
1306 | && memcmp(&ses->server->addr.sockAddr6.sin6_addr, | |
50c2f753 SF |
1307 | target_ip6_addr, sizeof(*target_ip6_addr)))) { |
1308 | /* BB lock server and tcp session and increment | |
1309 | use count here?? */ | |
1310 | ||
1311 | /* found a match on the TCP session */ | |
1312 | *psrvTcp = ses->server; | |
1313 | ||
1da177e4 LT |
1314 | /* BB check if reconnection needed */ |
1315 | if (strncmp | |
1316 | (ses->userName, userName, | |
1317 | MAX_USERNAME_SIZE) == 0){ | |
1318 | read_unlock(&GlobalSMBSeslock); | |
50c2f753 SF |
1319 | /* Found exact match on both TCP and |
1320 | SMB sessions */ | |
1321 | return ses; | |
1da177e4 LT |
1322 | } |
1323 | } | |
1324 | } | |
1325 | /* else tcp and smb sessions need reconnection */ | |
1326 | } | |
1327 | read_unlock(&GlobalSMBSeslock); | |
1328 | return NULL; | |
1329 | } | |
1330 | ||
1331 | static struct cifsTconInfo * | |
1332 | find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) | |
1333 | { | |
1334 | struct list_head *tmp; | |
1335 | struct cifsTconInfo *tcon; | |
1336 | ||
1337 | read_lock(&GlobalSMBSeslock); | |
1338 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
e466e487 | 1339 | cFYI(1, ("Next tcon")); |
1da177e4 LT |
1340 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); |
1341 | if (tcon->ses) { | |
1342 | if (tcon->ses->server) { | |
1343 | cFYI(1, | |
e466e487 | 1344 | ("old ip addr: %x == new ip %x ?", |
1da177e4 LT |
1345 | tcon->ses->server->addr.sockAddr.sin_addr. |
1346 | s_addr, new_target_ip_addr)); | |
1347 | if (tcon->ses->server->addr.sockAddr.sin_addr. | |
1348 | s_addr == new_target_ip_addr) { | |
e466e487 | 1349 | /* BB lock tcon, server and tcp session and increment use count here? */ |
1da177e4 LT |
1350 | /* found a match on the TCP session */ |
1351 | /* BB check if reconnection needed */ | |
50c2f753 SF |
1352 | cFYI(1, |
1353 | ("IP match, old UNC: %s new: %s", | |
1da177e4 LT |
1354 | tcon->treeName, uncName)); |
1355 | if (strncmp | |
1356 | (tcon->treeName, uncName, | |
1357 | MAX_TREE_SIZE) == 0) { | |
1358 | cFYI(1, | |
e466e487 | 1359 | ("and old usr: %s new: %s", |
1da177e4 LT |
1360 | tcon->treeName, uncName)); |
1361 | if (strncmp | |
1362 | (tcon->ses->userName, | |
1363 | userName, | |
1364 | MAX_USERNAME_SIZE) == 0) { | |
1365 | read_unlock(&GlobalSMBSeslock); | |
e466e487 SF |
1366 | /* matched smb session |
1367 | (user name */ | |
1368 | return tcon; | |
1da177e4 LT |
1369 | } |
1370 | } | |
1371 | } | |
1372 | } | |
1373 | } | |
1374 | } | |
1375 | read_unlock(&GlobalSMBSeslock); | |
1376 | return NULL; | |
1377 | } | |
1378 | ||
1379 | int | |
1380 | connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo, | |
737b758c SF |
1381 | const char *old_path, const struct nls_table *nls_codepage, |
1382 | int remap) | |
1da177e4 LT |
1383 | { |
1384 | unsigned char *referrals = NULL; | |
1385 | unsigned int num_referrals; | |
1386 | int rc = 0; | |
1387 | ||
50c2f753 | 1388 | rc = get_dfs_path(xid, pSesInfo, old_path, nls_codepage, |
737b758c | 1389 | &num_referrals, &referrals, remap); |
1da177e4 LT |
1390 | |
1391 | /* BB Add in code to: if valid refrl, if not ip address contact | |
50c2f753 | 1392 | the helper that resolves tcp names, mount to it, try to |
1da177e4 LT |
1393 | tcon to it unmount it if fail */ |
1394 | ||
f99d49ad | 1395 | kfree(referrals); |
1da177e4 LT |
1396 | |
1397 | return rc; | |
1398 | } | |
1399 | ||
1400 | int | |
50c2f753 SF |
1401 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, |
1402 | const struct nls_table *nls_codepage, unsigned int *pnum_referrals, | |
1403 | unsigned char **preferrals, int remap) | |
1da177e4 LT |
1404 | { |
1405 | char *temp_unc; | |
1406 | int rc = 0; | |
1407 | ||
1408 | *pnum_referrals = 0; | |
1409 | ||
1410 | if (pSesInfo->ipc_tid == 0) { | |
1411 | temp_unc = kmalloc(2 /* for slashes */ + | |
50c2f753 SF |
1412 | strnlen(pSesInfo->serverName, |
1413 | SERVER_NAME_LEN_WITH_NULL * 2) | |
1da177e4 LT |
1414 | + 1 + 4 /* slash IPC$ */ + 2, |
1415 | GFP_KERNEL); | |
1416 | if (temp_unc == NULL) | |
1417 | return -ENOMEM; | |
1418 | temp_unc[0] = '\\'; | |
1419 | temp_unc[1] = '\\'; | |
1420 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1421 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1422 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1423 | cFYI(1, | |
50c2f753 | 1424 | ("CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid)); |
1da177e4 LT |
1425 | kfree(temp_unc); |
1426 | } | |
1427 | if (rc == 0) | |
1428 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, | |
737b758c | 1429 | pnum_referrals, nls_codepage, remap); |
1da177e4 LT |
1430 | |
1431 | return rc; | |
1432 | } | |
1433 | ||
1434 | /* See RFC1001 section 14 on representation of Netbios names */ | |
50c2f753 | 1435 | static void rfc1002mangle(char *target, char *source, unsigned int length) |
1da177e4 | 1436 | { |
50c2f753 | 1437 | unsigned int i, j; |
1da177e4 | 1438 | |
50c2f753 | 1439 | for (i = 0, j = 0; i < (length); i++) { |
1da177e4 LT |
1440 | /* mask a nibble at a time and encode */ |
1441 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1442 | target[j+1] = 'A' + (0x0F & source[i]); | |
50c2f753 | 1443 | j += 2; |
1da177e4 LT |
1444 | } |
1445 | ||
1446 | } | |
1447 | ||
1448 | ||
1449 | static int | |
50c2f753 SF |
1450 | ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, |
1451 | char *netbios_name, char *target_name) | |
1da177e4 LT |
1452 | { |
1453 | int rc = 0; | |
1454 | int connected = 0; | |
1455 | __be16 orig_port = 0; | |
1456 | ||
fb8c4b14 | 1457 | if (*csocket == NULL) { |
50c2f753 SF |
1458 | rc = sock_create_kern(PF_INET, SOCK_STREAM, |
1459 | IPPROTO_TCP, csocket); | |
1da177e4 | 1460 | if (rc < 0) { |
50c2f753 | 1461 | cERROR(1, ("Error %d creating socket", rc)); |
1da177e4 LT |
1462 | *csocket = NULL; |
1463 | return rc; | |
1464 | } else { | |
1465 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
467a8f8d | 1466 | cFYI(1, ("Socket created")); |
50c2f753 | 1467 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
1da177e4 LT |
1468 | } |
1469 | } | |
1470 | ||
1471 | psin_server->sin_family = AF_INET; | |
fb8c4b14 | 1472 | if (psin_server->sin_port) { /* user overrode default port */ |
1da177e4 LT |
1473 | rc = (*csocket)->ops->connect(*csocket, |
1474 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1475 | sizeof(struct sockaddr_in), 0); |
1da177e4 LT |
1476 | if (rc >= 0) |
1477 | connected = 1; | |
50c2f753 | 1478 | } |
1da177e4 | 1479 | |
fb8c4b14 | 1480 | if (!connected) { |
50c2f753 | 1481 | /* save original port so we can retry user specified port |
1da177e4 LT |
1482 | later if fall back ports fail this time */ |
1483 | orig_port = psin_server->sin_port; | |
1484 | ||
1485 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1486 | if (psin_server->sin_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1487 | psin_server->sin_port = htons(CIFS_PORT); |
1488 | ||
1489 | rc = (*csocket)->ops->connect(*csocket, | |
1490 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1491 | sizeof(struct sockaddr_in), 0); |
1da177e4 LT |
1492 | if (rc >= 0) |
1493 | connected = 1; | |
1494 | } | |
1495 | } | |
1496 | if (!connected) { | |
1497 | psin_server->sin_port = htons(RFC1001_PORT); | |
1498 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
50c2f753 | 1499 | psin_server, |
6345a3a8 | 1500 | sizeof(struct sockaddr_in), 0); |
50c2f753 | 1501 | if (rc >= 0) |
1da177e4 LT |
1502 | connected = 1; |
1503 | } | |
1504 | ||
1505 | /* give up here - unless we want to retry on different | |
1506 | protocol families some day */ | |
1507 | if (!connected) { | |
fb8c4b14 | 1508 | if (orig_port) |
1da177e4 | 1509 | psin_server->sin_port = orig_port; |
50c2f753 | 1510 | cFYI(1, ("Error %d connecting to server via ipv4", rc)); |
1da177e4 LT |
1511 | sock_release(*csocket); |
1512 | *csocket = NULL; | |
1513 | return rc; | |
1514 | } | |
50c2f753 SF |
1515 | /* Eventually check for other socket options to change from |
1516 | the default. sock_setsockopt not used because it expects | |
1da177e4 | 1517 | user space buffer */ |
50c2f753 SF |
1518 | cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", |
1519 | (*csocket)->sk->sk_sndbuf, | |
b387eaeb | 1520 | (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo)); |
1da177e4 | 1521 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; |
b387eaeb | 1522 | /* make the bufsizes depend on wsize/rsize and max requests */ |
fb8c4b14 | 1523 | if ((*csocket)->sk->sk_sndbuf < (200 * 1024)) |
b387eaeb | 1524 | (*csocket)->sk->sk_sndbuf = 200 * 1024; |
fb8c4b14 | 1525 | if ((*csocket)->sk->sk_rcvbuf < (140 * 1024)) |
b387eaeb | 1526 | (*csocket)->sk->sk_rcvbuf = 140 * 1024; |
1da177e4 LT |
1527 | |
1528 | /* send RFC1001 sessinit */ | |
fb8c4b14 | 1529 | if (psin_server->sin_port == htons(RFC1001_PORT)) { |
1da177e4 | 1530 | /* some servers require RFC1001 sessinit before sending |
50c2f753 | 1531 | negprot - BB check reconnection in case where second |
1da177e4 | 1532 | sessinit is sent but no second negprot */ |
50c2f753 SF |
1533 | struct rfc1002_session_packet *ses_init_buf; |
1534 | struct smb_hdr *smb_buf; | |
1535 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), | |
1536 | GFP_KERNEL); | |
fb8c4b14 | 1537 | if (ses_init_buf) { |
1da177e4 | 1538 | ses_init_buf->trailer.session_req.called_len = 32; |
fb8c4b14 | 1539 | if (target_name && (target_name[0] != 0)) { |
a10faeb2 SF |
1540 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, |
1541 | target_name, 16); | |
1542 | } else { | |
1543 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
50c2f753 | 1544 | DEFAULT_CIFS_CALLED_NAME, 16); |
a10faeb2 SF |
1545 | } |
1546 | ||
1da177e4 LT |
1547 | ses_init_buf->trailer.session_req.calling_len = 32; |
1548 | /* calling name ends in null (byte 16) from old smb | |
1549 | convention. */ | |
50c2f753 | 1550 | if (netbios_name && (netbios_name[0] != 0)) { |
1da177e4 | 1551 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, |
50c2f753 | 1552 | netbios_name, 16); |
1da177e4 LT |
1553 | } else { |
1554 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
50c2f753 | 1555 | "LINUX_CIFS_CLNT", 16); |
1da177e4 LT |
1556 | } |
1557 | ses_init_buf->trailer.session_req.scope1 = 0; | |
1558 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1559 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1560 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1561 | smb_buf->smb_buf_length = 0x81000044; | |
1562 | rc = smb_send(*csocket, smb_buf, 0x44, | |
1563 | (struct sockaddr *)psin_server); | |
1564 | kfree(ses_init_buf); | |
50c2f753 | 1565 | msleep(1); /* RFC1001 layer in at least one server |
083d3a2c SF |
1566 | requires very short break before negprot |
1567 | presumably because not expecting negprot | |
1568 | to follow so fast. This is a simple | |
50c2f753 | 1569 | solution that works without |
083d3a2c SF |
1570 | complicating the code and causes no |
1571 | significant slowing down on mount | |
1572 | for everyone else */ | |
1da177e4 | 1573 | } |
50c2f753 | 1574 | /* else the negprot may still work without this |
1da177e4 | 1575 | even though malloc failed */ |
50c2f753 | 1576 | |
1da177e4 | 1577 | } |
50c2f753 | 1578 | |
1da177e4 LT |
1579 | return rc; |
1580 | } | |
1581 | ||
1582 | static int | |
1583 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket) | |
1584 | { | |
1585 | int rc = 0; | |
1586 | int connected = 0; | |
1587 | __be16 orig_port = 0; | |
1588 | ||
fb8c4b14 | 1589 | if (*csocket == NULL) { |
50c2f753 SF |
1590 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, |
1591 | IPPROTO_TCP, csocket); | |
1da177e4 | 1592 | if (rc < 0) { |
50c2f753 | 1593 | cERROR(1, ("Error %d creating ipv6 socket", rc)); |
1da177e4 LT |
1594 | *csocket = NULL; |
1595 | return rc; | |
1596 | } else { | |
1597 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
fb8c4b14 | 1598 | cFYI(1, ("ipv6 Socket created")); |
1da177e4 LT |
1599 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
1600 | } | |
1601 | } | |
1602 | ||
1603 | psin_server->sin6_family = AF_INET6; | |
1604 | ||
fb8c4b14 | 1605 | if (psin_server->sin6_port) { /* user overrode default port */ |
1da177e4 LT |
1606 | rc = (*csocket)->ops->connect(*csocket, |
1607 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1608 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1609 | if (rc >= 0) |
1610 | connected = 1; | |
50c2f753 | 1611 | } |
1da177e4 | 1612 | |
fb8c4b14 | 1613 | if (!connected) { |
50c2f753 | 1614 | /* save original port so we can retry user specified port |
1da177e4 LT |
1615 | later if fall back ports fail this time */ |
1616 | ||
1617 | orig_port = psin_server->sin6_port; | |
1618 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1619 | if (psin_server->sin6_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1620 | psin_server->sin6_port = htons(CIFS_PORT); |
1621 | ||
1622 | rc = (*csocket)->ops->connect(*csocket, | |
1623 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1624 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1625 | if (rc >= 0) |
1626 | connected = 1; | |
1627 | } | |
1628 | } | |
1629 | if (!connected) { | |
1630 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1631 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
6345a3a8 | 1632 | psin_server, sizeof(struct sockaddr_in6), 0); |
50c2f753 | 1633 | if (rc >= 0) |
1da177e4 LT |
1634 | connected = 1; |
1635 | } | |
1636 | ||
1637 | /* give up here - unless we want to retry on different | |
1638 | protocol families some day */ | |
1639 | if (!connected) { | |
fb8c4b14 | 1640 | if (orig_port) |
1da177e4 | 1641 | psin_server->sin6_port = orig_port; |
50c2f753 | 1642 | cFYI(1, ("Error %d connecting to server via ipv6", rc)); |
1da177e4 LT |
1643 | sock_release(*csocket); |
1644 | *csocket = NULL; | |
1645 | return rc; | |
1646 | } | |
50c2f753 SF |
1647 | /* Eventually check for other socket options to change from |
1648 | the default. sock_setsockopt not used because it expects | |
1da177e4 LT |
1649 | user space buffer */ |
1650 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
50c2f753 | 1651 | |
1da177e4 LT |
1652 | return rc; |
1653 | } | |
1654 | ||
50c2f753 SF |
1655 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon, |
1656 | struct super_block *sb, struct smb_vol *vol_info) | |
8af18971 SF |
1657 | { |
1658 | /* if we are reconnecting then should we check to see if | |
1659 | * any requested capabilities changed locally e.g. via | |
1660 | * remount but we can not do much about it here | |
1661 | * if they have (even if we could detect it by the following) | |
1662 | * Perhaps we could add a backpointer to array of sb from tcon | |
1663 | * or if we change to make all sb to same share the same | |
1664 | * sb as NFS - then we only have one backpointer to sb. | |
1665 | * What if we wanted to mount the server share twice once with | |
1666 | * and once without posixacls or posix paths? */ | |
1667 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
50c2f753 | 1668 | |
c18c842b SF |
1669 | if (vol_info && vol_info->no_linux_ext) { |
1670 | tcon->fsUnixInfo.Capability = 0; | |
1671 | tcon->unix_ext = 0; /* Unix Extensions disabled */ | |
1672 | cFYI(1, ("Linux protocol extensions disabled")); | |
1673 | return; | |
1674 | } else if (vol_info) | |
1675 | tcon->unix_ext = 1; /* Unix Extensions supported */ | |
1676 | ||
1677 | if (tcon->unix_ext == 0) { | |
1678 | cFYI(1, ("Unix extensions disabled so not set on reconnect")); | |
1679 | return; | |
1680 | } | |
50c2f753 | 1681 | |
fb8c4b14 | 1682 | if (!CIFSSMBQFSUnixInfo(xid, tcon)) { |
8af18971 | 1683 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
50c2f753 | 1684 | |
8af18971 SF |
1685 | /* check for reconnect case in which we do not |
1686 | want to change the mount behavior if we can avoid it */ | |
fb8c4b14 | 1687 | if (vol_info == NULL) { |
50c2f753 | 1688 | /* turn off POSIX ACL and PATHNAMES if not set |
8af18971 SF |
1689 | originally at mount time */ |
1690 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) | |
1691 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
1692 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) | |
1693 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; | |
8af18971 | 1694 | } |
50c2f753 | 1695 | |
8af18971 | 1696 | cap &= CIFS_UNIX_CAP_MASK; |
75865f8c | 1697 | if (vol_info && vol_info->no_psx_acl) |
8af18971 | 1698 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
75865f8c | 1699 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
fb8c4b14 SF |
1700 | cFYI(1, ("negotiated posix acl support")); |
1701 | if (sb) | |
8af18971 SF |
1702 | sb->s_flags |= MS_POSIXACL; |
1703 | } | |
1704 | ||
75865f8c | 1705 | if (vol_info && vol_info->posix_paths == 0) |
8af18971 | 1706 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
75865f8c | 1707 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
fb8c4b14 | 1708 | cFYI(1, ("negotiate posix pathnames")); |
75865f8c | 1709 | if (sb) |
50c2f753 | 1710 | CIFS_SB(sb)->mnt_cifs_flags |= |
8af18971 SF |
1711 | CIFS_MOUNT_POSIX_PATHS; |
1712 | } | |
50c2f753 | 1713 | |
984acfe1 SF |
1714 | /* We might be setting the path sep back to a different |
1715 | form if we are reconnecting and the server switched its | |
50c2f753 | 1716 | posix path capability for this share */ |
75865f8c | 1717 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
984acfe1 | 1718 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
75865f8c SF |
1719 | |
1720 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { | |
1721 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { | |
1722 | CIFS_SB(sb)->rsize = 127 * 1024; | |
1723 | #ifdef CONFIG_CIFS_DEBUG2 | |
fb8c4b14 | 1724 | cFYI(1, ("larger reads not supported by srv")); |
75865f8c SF |
1725 | #endif |
1726 | } | |
1727 | } | |
50c2f753 SF |
1728 | |
1729 | ||
1730 | cFYI(1, ("Negotiate caps 0x%x", (int)cap)); | |
8af18971 | 1731 | #ifdef CONFIG_CIFS_DEBUG2 |
75865f8c | 1732 | if (cap & CIFS_UNIX_FCNTL_CAP) |
fb8c4b14 | 1733 | cFYI(1, ("FCNTL cap")); |
75865f8c | 1734 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
fb8c4b14 | 1735 | cFYI(1, ("EXTATTR cap")); |
75865f8c | 1736 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
fb8c4b14 | 1737 | cFYI(1, ("POSIX path cap")); |
75865f8c | 1738 | if (cap & CIFS_UNIX_XATTR_CAP) |
fb8c4b14 | 1739 | cFYI(1, ("XATTR cap")); |
75865f8c | 1740 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
fb8c4b14 | 1741 | cFYI(1, ("POSIX ACL cap")); |
75865f8c | 1742 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
fb8c4b14 | 1743 | cFYI(1, ("very large read cap")); |
75865f8c | 1744 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) |
fb8c4b14 | 1745 | cFYI(1, ("very large write cap")); |
8af18971 SF |
1746 | #endif /* CIFS_DEBUG2 */ |
1747 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
442aa310 | 1748 | if (vol_info == NULL) { |
5a44b319 | 1749 | cFYI(1, ("resetting capabilities failed")); |
442aa310 | 1750 | } else |
5a44b319 SF |
1751 | cERROR(1, ("Negotiating Unix capabilities " |
1752 | "with the server failed. Consider " | |
1753 | "mounting with the Unix Extensions\n" | |
1754 | "disabled, if problems are found, " | |
1755 | "by specifying the nounix mount " | |
2224f4e5 | 1756 | "option.")); |
5a44b319 | 1757 | |
8af18971 SF |
1758 | } |
1759 | } | |
1760 | } | |
1761 | ||
1da177e4 LT |
1762 | int |
1763 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1764 | char *mount_data, const char *devname) | |
1765 | { | |
1766 | int rc = 0; | |
1767 | int xid; | |
1768 | int address_type = AF_INET; | |
1769 | struct socket *csocket = NULL; | |
1770 | struct sockaddr_in sin_server; | |
1771 | struct sockaddr_in6 sin_server6; | |
1772 | struct smb_vol volume_info; | |
1773 | struct cifsSesInfo *pSesInfo = NULL; | |
1774 | struct cifsSesInfo *existingCifsSes = NULL; | |
1775 | struct cifsTconInfo *tcon = NULL; | |
1776 | struct TCP_Server_Info *srvTcp = NULL; | |
1777 | ||
1778 | xid = GetXid(); | |
1779 | ||
1780 | /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ | |
50c2f753 SF |
1781 | |
1782 | memset(&volume_info, 0, sizeof(struct smb_vol)); | |
1da177e4 | 1783 | if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { |
f99d49ad JJ |
1784 | kfree(volume_info.UNC); |
1785 | kfree(volume_info.password); | |
2fe87f02 | 1786 | kfree(volume_info.prepath); |
1da177e4 LT |
1787 | FreeXid(xid); |
1788 | return -EINVAL; | |
1789 | } | |
1790 | ||
8426c39c | 1791 | if (volume_info.nullauth) { |
fb8c4b14 | 1792 | cFYI(1, ("null user")); |
9b8f5f57 | 1793 | volume_info.username = ""; |
8426c39c | 1794 | } else if (volume_info.username) { |
1da177e4 | 1795 | /* BB fixme parse for domain name here */ |
467a8f8d | 1796 | cFYI(1, ("Username: %s", volume_info.username)); |
1da177e4 | 1797 | } else { |
bf820679 | 1798 | cifserror("No username specified"); |
50c2f753 SF |
1799 | /* In userspace mount helper we can get user name from alternate |
1800 | locations such as env variables and files on disk */ | |
f99d49ad JJ |
1801 | kfree(volume_info.UNC); |
1802 | kfree(volume_info.password); | |
2fe87f02 | 1803 | kfree(volume_info.prepath); |
1da177e4 LT |
1804 | FreeXid(xid); |
1805 | return -EINVAL; | |
1806 | } | |
1807 | ||
1808 | if (volume_info.UNCip && volume_info.UNC) { | |
50c2f753 SF |
1809 | rc = cifs_inet_pton(AF_INET, volume_info.UNCip, |
1810 | &sin_server.sin_addr.s_addr); | |
1da177e4 | 1811 | |
fb8c4b14 | 1812 | if (rc <= 0) { |
1da177e4 | 1813 | /* not ipv4 address, try ipv6 */ |
50c2f753 SF |
1814 | rc = cifs_inet_pton(AF_INET6, volume_info.UNCip, |
1815 | &sin_server6.sin6_addr.in6_u); | |
fb8c4b14 | 1816 | if (rc > 0) |
1da177e4 LT |
1817 | address_type = AF_INET6; |
1818 | } else { | |
1819 | address_type = AF_INET; | |
1820 | } | |
50c2f753 | 1821 | |
fb8c4b14 | 1822 | if (rc <= 0) { |
1da177e4 | 1823 | /* we failed translating address */ |
f99d49ad JJ |
1824 | kfree(volume_info.UNC); |
1825 | kfree(volume_info.password); | |
2fe87f02 | 1826 | kfree(volume_info.prepath); |
1da177e4 LT |
1827 | FreeXid(xid); |
1828 | return -EINVAL; | |
1829 | } | |
1830 | ||
1831 | cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); | |
1832 | /* success */ | |
1833 | rc = 0; | |
50c2f753 SF |
1834 | } else if (volume_info.UNCip) { |
1835 | /* BB using ip addr as server name to connect to the | |
1836 | DFS root below */ | |
1837 | cERROR(1, ("Connecting to DFS root not implemented yet")); | |
f99d49ad JJ |
1838 | kfree(volume_info.UNC); |
1839 | kfree(volume_info.password); | |
2fe87f02 | 1840 | kfree(volume_info.prepath); |
1da177e4 LT |
1841 | FreeXid(xid); |
1842 | return -EINVAL; | |
1843 | } else /* which servers DFS root would we conect to */ { | |
1844 | cERROR(1, | |
50c2f753 SF |
1845 | ("CIFS mount error: No UNC path (e.g. -o " |
1846 | "unc=//192.168.1.100/public) specified")); | |
f99d49ad JJ |
1847 | kfree(volume_info.UNC); |
1848 | kfree(volume_info.password); | |
2fe87f02 | 1849 | kfree(volume_info.prepath); |
1da177e4 LT |
1850 | FreeXid(xid); |
1851 | return -EINVAL; | |
1852 | } | |
1853 | ||
1854 | /* this is needed for ASCII cp to Unicode converts */ | |
fb8c4b14 | 1855 | if (volume_info.iocharset == NULL) { |
1da177e4 LT |
1856 | cifs_sb->local_nls = load_nls_default(); |
1857 | /* load_nls_default can not return null */ | |
1858 | } else { | |
1859 | cifs_sb->local_nls = load_nls(volume_info.iocharset); | |
fb8c4b14 | 1860 | if (cifs_sb->local_nls == NULL) { |
50c2f753 SF |
1861 | cERROR(1, ("CIFS mount error: iocharset %s not found", |
1862 | volume_info.iocharset)); | |
f99d49ad JJ |
1863 | kfree(volume_info.UNC); |
1864 | kfree(volume_info.password); | |
2fe87f02 | 1865 | kfree(volume_info.prepath); |
1da177e4 LT |
1866 | FreeXid(xid); |
1867 | return -ELIBACC; | |
1868 | } | |
1869 | } | |
1870 | ||
fb8c4b14 | 1871 | if (address_type == AF_INET) |
1da177e4 LT |
1872 | existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr, |
1873 | NULL /* no ipv6 addr */, | |
1874 | volume_info.username, &srvTcp); | |
fb8c4b14 SF |
1875 | else if (address_type == AF_INET6) { |
1876 | cFYI(1, ("looking for ipv6 address")); | |
1da177e4 LT |
1877 | existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */, |
1878 | &sin_server6.sin6_addr, | |
1879 | volume_info.username, &srvTcp); | |
5858ae44 | 1880 | } else { |
f99d49ad JJ |
1881 | kfree(volume_info.UNC); |
1882 | kfree(volume_info.password); | |
2fe87f02 | 1883 | kfree(volume_info.prepath); |
1da177e4 LT |
1884 | FreeXid(xid); |
1885 | return -EINVAL; | |
1886 | } | |
1887 | ||
1da177e4 | 1888 | if (srvTcp) { |
50c2f753 | 1889 | cFYI(1, ("Existing tcp session with server found")); |
1da177e4 | 1890 | } else { /* create socket */ |
4523cc30 | 1891 | if (volume_info.port) |
1da177e4 LT |
1892 | sin_server.sin_port = htons(volume_info.port); |
1893 | else | |
1894 | sin_server.sin_port = 0; | |
5858ae44 | 1895 | if (address_type == AF_INET6) { |
fb8c4b14 | 1896 | cFYI(1, ("attempting ipv6 connect")); |
5858ae44 SF |
1897 | /* BB should we allow ipv6 on port 139? */ |
1898 | /* other OS never observed in Wild doing 139 with v6 */ | |
50c2f753 SF |
1899 | rc = ipv6_connect(&sin_server6, &csocket); |
1900 | } else | |
1901 | rc = ipv4_connect(&sin_server, &csocket, | |
a10faeb2 SF |
1902 | volume_info.source_rfc1001_name, |
1903 | volume_info.target_rfc1001_name); | |
1da177e4 | 1904 | if (rc < 0) { |
50c2f753 SF |
1905 | cERROR(1, ("Error connecting to IPv4 socket. " |
1906 | "Aborting operation")); | |
4523cc30 | 1907 | if (csocket != NULL) |
1da177e4 | 1908 | sock_release(csocket); |
f99d49ad JJ |
1909 | kfree(volume_info.UNC); |
1910 | kfree(volume_info.password); | |
2fe87f02 | 1911 | kfree(volume_info.prepath); |
1da177e4 LT |
1912 | FreeXid(xid); |
1913 | return rc; | |
1914 | } | |
1915 | ||
a8a11d39 MK |
1916 | srvTcp = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); |
1917 | if (!srvTcp) { | |
1da177e4 LT |
1918 | rc = -ENOMEM; |
1919 | sock_release(csocket); | |
f99d49ad JJ |
1920 | kfree(volume_info.UNC); |
1921 | kfree(volume_info.password); | |
2fe87f02 | 1922 | kfree(volume_info.prepath); |
1da177e4 LT |
1923 | FreeXid(xid); |
1924 | return rc; | |
1925 | } else { | |
50c2f753 | 1926 | memcpy(&srvTcp->addr.sockAddr, &sin_server, |
6345a3a8 | 1927 | sizeof(struct sockaddr_in)); |
50c2f753 | 1928 | atomic_set(&srvTcp->inFlight, 0); |
1da177e4 LT |
1929 | /* BB Add code for ipv6 case too */ |
1930 | srvTcp->ssocket = csocket; | |
1931 | srvTcp->protocolType = IPV4; | |
1932 | init_waitqueue_head(&srvTcp->response_q); | |
1933 | init_waitqueue_head(&srvTcp->request_q); | |
1934 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
1935 | /* at this point we are the only ones with the pointer | |
1936 | to the struct since the kernel thread not created yet | |
1937 | so no need to spinlock this init of tcpStatus */ | |
1938 | srvTcp->tcpStatus = CifsNew; | |
1939 | init_MUTEX(&srvTcp->tcpSem); | |
aaf737ad | 1940 | srvTcp->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, srvTcp, "cifsd"); |
4523cc30 | 1941 | if ( IS_ERR(srvTcp->tsk) ) { |
aaf737ad | 1942 | rc = PTR_ERR(srvTcp->tsk); |
50c2f753 | 1943 | cERROR(1, ("error %d create cifsd thread", rc)); |
aaf737ad | 1944 | srvTcp->tsk = NULL; |
1da177e4 | 1945 | sock_release(csocket); |
f99d49ad JJ |
1946 | kfree(volume_info.UNC); |
1947 | kfree(volume_info.password); | |
2fe87f02 | 1948 | kfree(volume_info.prepath); |
1da177e4 LT |
1949 | FreeXid(xid); |
1950 | return rc; | |
f191401f SF |
1951 | } |
1952 | wait_for_completion(&cifsd_complete); | |
1953 | rc = 0; | |
50c2f753 SF |
1954 | memcpy(srvTcp->workstation_RFC1001_name, |
1955 | volume_info.source_rfc1001_name, 16); | |
1956 | memcpy(srvTcp->server_RFC1001_name, | |
1957 | volume_info.target_rfc1001_name, 16); | |
ad009ac9 | 1958 | srvTcp->sequence_number = 0; |
1da177e4 LT |
1959 | } |
1960 | } | |
1961 | ||
1962 | if (existingCifsSes) { | |
1963 | pSesInfo = existingCifsSes; | |
bf820679 | 1964 | cFYI(1, ("Existing smb sess found")); |
f99d49ad | 1965 | kfree(volume_info.password); |
1da177e4 LT |
1966 | /* volume_info.UNC freed at end of function */ |
1967 | } else if (!rc) { | |
bf820679 | 1968 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 LT |
1969 | pSesInfo = sesInfoAlloc(); |
1970 | if (pSesInfo == NULL) | |
1971 | rc = -ENOMEM; | |
1972 | else { | |
1973 | pSesInfo->server = srvTcp; | |
1974 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
1975 | NIPQUAD(sin_server.sin_addr.s_addr)); | |
1976 | } | |
1977 | ||
50c2f753 SF |
1978 | if (!rc) { |
1979 | /* volume_info.password freed at unmount */ | |
1da177e4 LT |
1980 | if (volume_info.password) |
1981 | pSesInfo->password = volume_info.password; | |
1982 | if (volume_info.username) | |
1983 | strncpy(pSesInfo->userName, | |
50c2f753 SF |
1984 | volume_info.username, |
1985 | MAX_USERNAME_SIZE); | |
3979877e SF |
1986 | if (volume_info.domainname) { |
1987 | int len = strlen(volume_info.domainname); | |
50c2f753 | 1988 | pSesInfo->domainName = |
3979877e | 1989 | kmalloc(len + 1, GFP_KERNEL); |
4523cc30 | 1990 | if (pSesInfo->domainName) |
3979877e SF |
1991 | strcpy(pSesInfo->domainName, |
1992 | volume_info.domainname); | |
1993 | } | |
1da177e4 | 1994 | pSesInfo->linux_uid = volume_info.linux_uid; |
750d1151 | 1995 | pSesInfo->overrideSecFlg = volume_info.secFlg; |
1da177e4 | 1996 | down(&pSesInfo->sesSem); |
189acaae | 1997 | /* BB FIXME need to pass vol->secFlgs BB */ |
50c2f753 SF |
1998 | rc = cifs_setup_session(xid, pSesInfo, |
1999 | cifs_sb->local_nls); | |
1da177e4 | 2000 | up(&pSesInfo->sesSem); |
4523cc30 | 2001 | if (!rc) |
1da177e4 LT |
2002 | atomic_inc(&srvTcp->socketUseCount); |
2003 | } else | |
f99d49ad | 2004 | kfree(volume_info.password); |
1da177e4 | 2005 | } |
50c2f753 | 2006 | |
1da177e4 LT |
2007 | /* search for existing tcon to this server share */ |
2008 | if (!rc) { | |
4523cc30 | 2009 | if (volume_info.rsize > CIFSMaxBufSize) { |
50c2f753 | 2010 | cERROR(1, ("rsize %d too large, using MaxBufSize", |
0ae0efad SF |
2011 | volume_info.rsize)); |
2012 | cifs_sb->rsize = CIFSMaxBufSize; | |
75865f8c SF |
2013 | } else if ((volume_info.rsize) && |
2014 | (volume_info.rsize <= CIFSMaxBufSize)) | |
1da177e4 | 2015 | cifs_sb->rsize = volume_info.rsize; |
0ae0efad SF |
2016 | else /* default */ |
2017 | cifs_sb->rsize = CIFSMaxBufSize; | |
2018 | ||
4523cc30 | 2019 | if (volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { |
50c2f753 | 2020 | cERROR(1, ("wsize %d too large, using 4096 instead", |
0ae0efad SF |
2021 | volume_info.wsize)); |
2022 | cifs_sb->wsize = 4096; | |
4523cc30 | 2023 | } else if (volume_info.wsize) |
1da177e4 LT |
2024 | cifs_sb->wsize = volume_info.wsize; |
2025 | else | |
50c2f753 | 2026 | cifs_sb->wsize = |
1877c9ea SF |
2027 | min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE, |
2028 | 127*1024); | |
17cbbafe | 2029 | /* old default of CIFSMaxBufSize was too small now |
50c2f753 | 2030 | that SMB Write2 can send multiple pages in kvec. |
17cbbafe SF |
2031 | RFC1001 does not describe what happens when frame |
2032 | bigger than 128K is sent so use that as max in | |
2033 | conjunction with 52K kvec constraint on arch with 4K | |
2034 | page size */ | |
2035 | ||
4523cc30 | 2036 | if (cifs_sb->rsize < 2048) { |
50c2f753 | 2037 | cifs_sb->rsize = 2048; |
6cec2aed | 2038 | /* Windows ME may prefer this */ |
467a8f8d | 2039 | cFYI(1, ("readsize set to minimum: 2048")); |
1da177e4 | 2040 | } |
2fe87f02 SF |
2041 | /* calculate prepath */ |
2042 | cifs_sb->prepath = volume_info.prepath; | |
4523cc30 | 2043 | if (cifs_sb->prepath) { |
2fe87f02 SF |
2044 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); |
2045 | cifs_sb->prepath[0] = CIFS_DIR_SEP(cifs_sb); | |
2046 | volume_info.prepath = NULL; | |
50c2f753 | 2047 | } else |
2fe87f02 | 2048 | cifs_sb->prepathlen = 0; |
1da177e4 LT |
2049 | cifs_sb->mnt_uid = volume_info.linux_uid; |
2050 | cifs_sb->mnt_gid = volume_info.linux_gid; | |
2051 | cifs_sb->mnt_file_mode = volume_info.file_mode; | |
2052 | cifs_sb->mnt_dir_mode = volume_info.dir_mode; | |
467a8f8d SF |
2053 | cFYI(1, ("file mode: 0x%x dir mode: 0x%x", |
2054 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode)); | |
1da177e4 | 2055 | |
4523cc30 | 2056 | if (volume_info.noperm) |
1da177e4 | 2057 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; |
4523cc30 | 2058 | if (volume_info.setuids) |
1da177e4 | 2059 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; |
4523cc30 | 2060 | if (volume_info.server_ino) |
1da177e4 | 2061 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; |
4523cc30 | 2062 | if (volume_info.remap) |
6a0b4824 | 2063 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; |
4523cc30 | 2064 | if (volume_info.no_xattr) |
1da177e4 | 2065 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; |
4523cc30 | 2066 | if (volume_info.sfu_emul) |
d7245c2c | 2067 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; |
4523cc30 | 2068 | if (volume_info.nobrl) |
c46fa8ac | 2069 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; |
4523cc30 | 2070 | if (volume_info.cifs_acl) |
0a4b92c0 | 2071 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; |
4523cc30 SF |
2072 | if (volume_info.override_uid) |
2073 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; | |
2074 | if (volume_info.override_gid) | |
2075 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; | |
2076 | if (volume_info.direct_io) { | |
467a8f8d | 2077 | cFYI(1, ("mounting share using direct i/o")); |
1da177e4 LT |
2078 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
2079 | } | |
2080 | ||
2081 | tcon = | |
2082 | find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, | |
2083 | volume_info.username); | |
2084 | if (tcon) { | |
bf820679 | 2085 | cFYI(1, ("Found match on UNC path")); |
1da177e4 LT |
2086 | /* we can have only one retry value for a connection |
2087 | to a share so for resources mounted more than once | |
50c2f753 | 2088 | to the same server share the last value passed in |
1da177e4 LT |
2089 | for the retry flag is used */ |
2090 | tcon->retry = volume_info.retry; | |
d3485d37 | 2091 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
2092 | } else { |
2093 | tcon = tconInfoAlloc(); | |
2094 | if (tcon == NULL) | |
2095 | rc = -ENOMEM; | |
2096 | else { | |
50c2f753 | 2097 | /* check for null share name ie connecting to |
8af18971 | 2098 | * dfs root */ |
1da177e4 | 2099 | |
50c2f753 | 2100 | /* BB check if this works for exactly length |
8af18971 | 2101 | * three strings */ |
1da177e4 LT |
2102 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) |
2103 | && (strchr(volume_info.UNC + 3, '/') == | |
2104 | NULL)) { | |
737b758c | 2105 | rc = connect_to_dfs_path(xid, pSesInfo, |
8af18971 | 2106 | "", cifs_sb->local_nls, |
50c2f753 | 2107 | cifs_sb->mnt_cifs_flags & |
8af18971 | 2108 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
f99d49ad | 2109 | kfree(volume_info.UNC); |
1da177e4 LT |
2110 | FreeXid(xid); |
2111 | return -ENODEV; | |
2112 | } else { | |
8af18971 SF |
2113 | /* BB Do we need to wrap sesSem around |
2114 | * this TCon call and Unix SetFS as | |
2115 | * we do on SessSetup and reconnect? */ | |
50c2f753 | 2116 | rc = CIFSTCon(xid, pSesInfo, |
1da177e4 LT |
2117 | volume_info.UNC, |
2118 | tcon, cifs_sb->local_nls); | |
2119 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
2120 | } | |
2121 | if (!rc) { | |
2122 | atomic_inc(&pSesInfo->inUse); | |
2123 | tcon->retry = volume_info.retry; | |
d3485d37 | 2124 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
2125 | } |
2126 | } | |
2127 | } | |
2128 | } | |
4523cc30 | 2129 | if (pSesInfo) { |
1da177e4 LT |
2130 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
2131 | sb->s_maxbytes = (u64) 1 << 63; | |
2132 | } else | |
2133 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
2134 | } | |
2135 | ||
8af18971 | 2136 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
1da177e4 LT |
2137 | sb->s_time_gran = 100; |
2138 | ||
2139 | /* on error free sesinfo and tcon struct if needed */ | |
2140 | if (rc) { | |
2141 | /* if session setup failed, use count is zero but | |
2142 | we still need to free cifsd thread */ | |
4523cc30 | 2143 | if (atomic_read(&srvTcp->socketUseCount) == 0) { |
1da177e4 LT |
2144 | spin_lock(&GlobalMid_Lock); |
2145 | srvTcp->tcpStatus = CifsExiting; | |
2146 | spin_unlock(&GlobalMid_Lock); | |
4523cc30 | 2147 | if (srvTcp->tsk) { |
28356a16 SF |
2148 | struct task_struct *tsk; |
2149 | /* If we could verify that kthread_stop would | |
2150 | always wake up processes blocked in | |
2151 | tcp in recv_mesg then we could remove the | |
2152 | send_sig call */ | |
50c2f753 | 2153 | force_sig(SIGKILL, srvTcp->tsk); |
28356a16 | 2154 | tsk = srvTcp->tsk; |
fb8c4b14 | 2155 | if (tsk) |
f7f7c31c | 2156 | kthread_stop(tsk); |
f191401f | 2157 | } |
1da177e4 LT |
2158 | } |
2159 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
2160 | if (tcon) /* up accidently freeing someone elses tcon struct */ | |
2161 | tconInfoFree(tcon); | |
2162 | if (existingCifsSes == NULL) { | |
2163 | if (pSesInfo) { | |
50c2f753 | 2164 | if ((pSesInfo->server) && |
1da177e4 LT |
2165 | (pSesInfo->status == CifsGood)) { |
2166 | int temp_rc; | |
2167 | temp_rc = CIFSSMBLogoff(xid, pSesInfo); | |
2168 | /* if the socketUseCount is now zero */ | |
4523cc30 | 2169 | if ((temp_rc == -ESHUTDOWN) && |
50c2f753 | 2170 | (pSesInfo->server) && |
5d9c7206 | 2171 | (pSesInfo->server->tsk)) { |
28356a16 | 2172 | struct task_struct *tsk; |
5d9c7206 J |
2173 | force_sig(SIGKILL, |
2174 | pSesInfo->server->tsk); | |
28356a16 | 2175 | tsk = pSesInfo->server->tsk; |
f7f7c31c | 2176 | if (tsk) |
28356a16 | 2177 | kthread_stop(tsk); |
f191401f | 2178 | } |
a013689d | 2179 | } else { |
1da177e4 | 2180 | cFYI(1, ("No session or bad tcon")); |
a013689d SF |
2181 | if ((pSesInfo->server) && |
2182 | (pSesInfo->server->tsk)) { | |
2183 | struct task_struct *tsk; | |
2184 | force_sig(SIGKILL, | |
2185 | pSesInfo->server->tsk); | |
2186 | tsk = pSesInfo->server->tsk; | |
2187 | if (tsk) | |
2188 | kthread_stop(tsk); | |
2189 | } | |
2190 | } | |
1da177e4 LT |
2191 | sesInfoFree(pSesInfo); |
2192 | /* pSesInfo = NULL; */ | |
2193 | } | |
2194 | } | |
2195 | } else { | |
2196 | atomic_inc(&tcon->useCount); | |
2197 | cifs_sb->tcon = tcon; | |
2198 | tcon->ses = pSesInfo; | |
2199 | ||
82940a46 | 2200 | /* do not care if following two calls succeed - informational */ |
7f8ed420 SF |
2201 | if (!tcon->ipc) { |
2202 | CIFSSMBQFSDeviceInfo(xid, tcon); | |
2203 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
2204 | } | |
50c2f753 | 2205 | |
8af18971 SF |
2206 | /* tell server which Unix caps we support */ |
2207 | if (tcon->ses->capabilities & CAP_UNIX) | |
c18c842b SF |
2208 | /* reset of caps checks mount to see if unix extensions |
2209 | disabled for just this mount */ | |
8af18971 | 2210 | reset_cifs_unix_caps(xid, tcon, sb, &volume_info); |
c18c842b SF |
2211 | else |
2212 | tcon->unix_ext = 0; /* server does not support them */ | |
2213 | ||
2214 | if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) { | |
75865f8c SF |
2215 | cifs_sb->rsize = 1024 * 127; |
2216 | #ifdef CONFIG_CIFS_DEBUG2 | |
c18c842b | 2217 | cFYI(1, ("no very large read support, rsize now 127K")); |
75865f8c | 2218 | #endif |
75865f8c | 2219 | } |
3e84469d SF |
2220 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
2221 | cifs_sb->wsize = min(cifs_sb->wsize, | |
2222 | (tcon->ses->server->maxBuf - | |
2223 | MAX_CIFS_HDR_SIZE)); | |
0ae0efad | 2224 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
50c2f753 SF |
2225 | cifs_sb->rsize = min(cifs_sb->rsize, |
2226 | (tcon->ses->server->maxBuf - | |
2227 | MAX_CIFS_HDR_SIZE)); | |
1da177e4 LT |
2228 | } |
2229 | ||
2230 | /* volume_info.password is freed above when existing session found | |
2231 | (in which case it is not needed anymore) but when new sesion is created | |
2232 | the password ptr is put in the new session structure (in which case the | |
2233 | password will be freed at unmount time) */ | |
f99d49ad | 2234 | kfree(volume_info.UNC); |
2fe87f02 | 2235 | kfree(volume_info.prepath); |
1da177e4 LT |
2236 | FreeXid(xid); |
2237 | return rc; | |
2238 | } | |
2239 | ||
2240 | static int | |
2241 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 2242 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
2243 | const struct nls_table *nls_codepage) |
2244 | { | |
2245 | struct smb_hdr *smb_buffer; | |
2246 | struct smb_hdr *smb_buffer_response; | |
2247 | SESSION_SETUP_ANDX *pSMB; | |
2248 | SESSION_SETUP_ANDX *pSMBr; | |
2249 | char *bcc_ptr; | |
2250 | char *user; | |
2251 | char *domain; | |
2252 | int rc = 0; | |
2253 | int remaining_words = 0; | |
2254 | int bytes_returned = 0; | |
2255 | int len; | |
2256 | __u32 capabilities; | |
2257 | __u16 count; | |
2258 | ||
eeac8047 | 2259 | cFYI(1, ("In sesssetup")); |
4523cc30 | 2260 | if (ses == NULL) |
1da177e4 LT |
2261 | return -EINVAL; |
2262 | user = ses->userName; | |
2263 | domain = ses->domainName; | |
2264 | smb_buffer = cifs_buf_get(); | |
2265 | if (smb_buffer == NULL) { | |
2266 | return -ENOMEM; | |
2267 | } | |
2268 | smb_buffer_response = smb_buffer; | |
2269 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2270 | ||
2271 | /* send SMBsessionSetup here */ | |
2272 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2273 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2274 | ||
1982c344 | 2275 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2276 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2277 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2278 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2279 | ||
50c2f753 SF |
2280 | if (ses->server->secMode & |
2281 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
2282 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2283 | ||
2284 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2285 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2286 | if (ses->capabilities & CAP_UNICODE) { | |
2287 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2288 | capabilities |= CAP_UNICODE; | |
2289 | } | |
2290 | if (ses->capabilities & CAP_STATUS32) { | |
2291 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2292 | capabilities |= CAP_STATUS32; | |
2293 | } | |
2294 | if (ses->capabilities & CAP_DFS) { | |
2295 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2296 | capabilities |= CAP_DFS; | |
2297 | } | |
2298 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2299 | ||
50c2f753 | 2300 | pSMB->req_no_secext.CaseInsensitivePasswordLength = |
7c7b25bc | 2301 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2302 | |
2303 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2304 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2305 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2306 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2307 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2308 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2309 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2310 | |
2311 | if (ses->capabilities & CAP_UNICODE) { | |
2312 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2313 | *bcc_ptr = 0; | |
2314 | bcc_ptr++; | |
2315 | } | |
4523cc30 | 2316 | if (user == NULL) |
3979877e | 2317 | bytes_returned = 0; /* skip null user */ |
50c2f753 | 2318 | else |
1da177e4 | 2319 | bytes_returned = |
50c2f753 | 2320 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2321 | nls_codepage); |
2322 | /* convert number of 16 bit words to bytes */ | |
2323 | bcc_ptr += 2 * bytes_returned; | |
2324 | bcc_ptr += 2; /* trailing null */ | |
2325 | if (domain == NULL) | |
2326 | bytes_returned = | |
e89dc920 | 2327 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2328 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2329 | else | |
2330 | bytes_returned = | |
e89dc920 | 2331 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2332 | nls_codepage); |
2333 | bcc_ptr += 2 * bytes_returned; | |
2334 | bcc_ptr += 2; | |
2335 | bytes_returned = | |
e89dc920 | 2336 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2337 | 32, nls_codepage); |
2338 | bcc_ptr += 2 * bytes_returned; | |
2339 | bytes_returned = | |
e9ff3990 | 2340 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, |
1da177e4 LT |
2341 | 32, nls_codepage); |
2342 | bcc_ptr += 2 * bytes_returned; | |
2343 | bcc_ptr += 2; | |
2344 | bytes_returned = | |
e89dc920 | 2345 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2346 | 64, nls_codepage); |
2347 | bcc_ptr += 2 * bytes_returned; | |
2348 | bcc_ptr += 2; | |
2349 | } else { | |
50c2f753 | 2350 | if (user != NULL) { |
1da177e4 LT |
2351 | strncpy(bcc_ptr, user, 200); |
2352 | bcc_ptr += strnlen(user, 200); | |
2353 | } | |
2354 | *bcc_ptr = 0; | |
2355 | bcc_ptr++; | |
2356 | if (domain == NULL) { | |
2357 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2358 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2359 | } else { | |
2360 | strncpy(bcc_ptr, domain, 64); | |
2361 | bcc_ptr += strnlen(domain, 64); | |
2362 | *bcc_ptr = 0; | |
2363 | bcc_ptr++; | |
2364 | } | |
2365 | strcpy(bcc_ptr, "Linux version "); | |
2366 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2367 | strcpy(bcc_ptr, utsname()->release); |
2368 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2369 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2370 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2371 | } | |
2372 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2373 | smb_buffer->smb_buf_length += count; | |
2374 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2375 | ||
2376 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2377 | &bytes_returned, 1); | |
2378 | if (rc) { | |
2379 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2380 | } else if ((smb_buffer_response->WordCount == 3) | |
2381 | || (smb_buffer_response->WordCount == 4)) { | |
2382 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2383 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2384 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2385 | cFYI(1, (" Guest login")); /* BB mark SesInfo struct? */ |
2386 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format | |
2387 | (little endian) */ | |
1da177e4 | 2388 | cFYI(1, ("UID = %d ", ses->Suid)); |
50c2f753 SF |
2389 | /* response can have either 3 or 4 word count - Samba sends 3 */ |
2390 | bcc_ptr = pByteArea(smb_buffer_response); | |
1da177e4 LT |
2391 | if ((pSMBr->resp.hdr.WordCount == 3) |
2392 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2393 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2394 | if (pSMBr->resp.hdr.WordCount == 4) | |
2395 | bcc_ptr += blob_len; | |
2396 | ||
2397 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2398 | if ((long) (bcc_ptr) % 2) { | |
2399 | remaining_words = | |
50c2f753 SF |
2400 | (BCC(smb_buffer_response) - 1) / 2; |
2401 | /* Unicode strings must be word | |
2402 | aligned */ | |
2403 | bcc_ptr++; | |
1da177e4 LT |
2404 | } else { |
2405 | remaining_words = | |
2406 | BCC(smb_buffer_response) / 2; | |
2407 | } | |
2408 | len = | |
2409 | UniStrnlen((wchar_t *) bcc_ptr, | |
2410 | remaining_words - 1); | |
2411 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2412 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2413 | terminating last Unicode string in response */ | |
fb8c4b14 | 2414 | if (ses->serverOS) |
a424f8bf | 2415 | kfree(ses->serverOS); |
50c2f753 SF |
2416 | ses->serverOS = kzalloc(2 * (len + 1), |
2417 | GFP_KERNEL); | |
fb8c4b14 | 2418 | if (ses->serverOS == NULL) |
433dc24f | 2419 | goto sesssetup_nomem; |
1da177e4 | 2420 | cifs_strfromUCS_le(ses->serverOS, |
50c2f753 SF |
2421 | (__le16 *)bcc_ptr, |
2422 | len, nls_codepage); | |
1da177e4 LT |
2423 | bcc_ptr += 2 * (len + 1); |
2424 | remaining_words -= len + 1; | |
2425 | ses->serverOS[2 * len] = 0; | |
2426 | ses->serverOS[1 + (2 * len)] = 0; | |
2427 | if (remaining_words > 0) { | |
2428 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2429 | remaining_words-1); | |
cd49b492 | 2430 | kfree(ses->serverNOS); |
50c2f753 SF |
2431 | ses->serverNOS = kzalloc(2 * (len + 1), |
2432 | GFP_KERNEL); | |
fb8c4b14 | 2433 | if (ses->serverNOS == NULL) |
433dc24f | 2434 | goto sesssetup_nomem; |
1da177e4 | 2435 | cifs_strfromUCS_le(ses->serverNOS, |
50c2f753 SF |
2436 | (__le16 *)bcc_ptr, |
2437 | len, nls_codepage); | |
1da177e4 LT |
2438 | bcc_ptr += 2 * (len + 1); |
2439 | ses->serverNOS[2 * len] = 0; | |
2440 | ses->serverNOS[1 + (2 * len)] = 0; | |
fb8c4b14 | 2441 | if (strncmp(ses->serverNOS, |
50c2f753 | 2442 | "NT LAN Manager 4", 16) == 0) { |
467a8f8d | 2443 | cFYI(1, ("NT4 server")); |
1da177e4 LT |
2444 | ses->flags |= CIFS_SES_NT4; |
2445 | } | |
2446 | remaining_words -= len + 1; | |
2447 | if (remaining_words > 0) { | |
433dc24f | 2448 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
50c2f753 SF |
2449 | /* last string is not always null terminated |
2450 | (for e.g. for Windows XP & 2000) */ | |
fb8c4b14 | 2451 | if (ses->serverDomain) |
a424f8bf | 2452 | kfree(ses->serverDomain); |
1da177e4 | 2453 | ses->serverDomain = |
50c2f753 SF |
2454 | kzalloc(2*(len+1), |
2455 | GFP_KERNEL); | |
fb8c4b14 | 2456 | if (ses->serverDomain == NULL) |
433dc24f | 2457 | goto sesssetup_nomem; |
1da177e4 | 2458 | cifs_strfromUCS_le(ses->serverDomain, |
50c2f753 SF |
2459 | (__le16 *)bcc_ptr, |
2460 | len, nls_codepage); | |
1da177e4 LT |
2461 | bcc_ptr += 2 * (len + 1); |
2462 | ses->serverDomain[2*len] = 0; | |
2463 | ses->serverDomain[1+(2*len)] = 0; | |
50c2f753 SF |
2464 | } else { /* else no more room so create |
2465 | dummy domain string */ | |
fb8c4b14 | 2466 | if (ses->serverDomain) |
a424f8bf | 2467 | kfree(ses->serverDomain); |
50c2f753 | 2468 | ses->serverDomain = |
e915fc49 | 2469 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2470 | } |
50c2f753 SF |
2471 | } else { /* no room so create dummy domain |
2472 | and NOS string */ | |
2473 | ||
433dc24f SF |
2474 | /* if these kcallocs fail not much we |
2475 | can do, but better to not fail the | |
2476 | sesssetup itself */ | |
cd49b492 | 2477 | kfree(ses->serverDomain); |
1da177e4 | 2478 | ses->serverDomain = |
e915fc49 | 2479 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2480 | kfree(ses->serverNOS); |
1da177e4 | 2481 | ses->serverNOS = |
e915fc49 | 2482 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2483 | } |
2484 | } else { /* ASCII */ | |
2485 | len = strnlen(bcc_ptr, 1024); | |
2486 | if (((long) bcc_ptr + len) - (long) | |
2487 | pByteArea(smb_buffer_response) | |
2488 | <= BCC(smb_buffer_response)) { | |
cd49b492 | 2489 | kfree(ses->serverOS); |
50c2f753 SF |
2490 | ses->serverOS = kzalloc(len + 1, |
2491 | GFP_KERNEL); | |
fb8c4b14 | 2492 | if (ses->serverOS == NULL) |
433dc24f | 2493 | goto sesssetup_nomem; |
50c2f753 | 2494 | strncpy(ses->serverOS, bcc_ptr, len); |
1da177e4 LT |
2495 | |
2496 | bcc_ptr += len; | |
50c2f753 SF |
2497 | /* null terminate the string */ |
2498 | bcc_ptr[0] = 0; | |
1da177e4 LT |
2499 | bcc_ptr++; |
2500 | ||
2501 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2502 | kfree(ses->serverNOS); |
50c2f753 SF |
2503 | ses->serverNOS = kzalloc(len + 1, |
2504 | GFP_KERNEL); | |
fb8c4b14 | 2505 | if (ses->serverNOS == NULL) |
433dc24f | 2506 | goto sesssetup_nomem; |
1da177e4 LT |
2507 | strncpy(ses->serverNOS, bcc_ptr, len); |
2508 | bcc_ptr += len; | |
2509 | bcc_ptr[0] = 0; | |
2510 | bcc_ptr++; | |
2511 | ||
2512 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 2513 | if (ses->serverDomain) |
a424f8bf | 2514 | kfree(ses->serverDomain); |
50c2f753 SF |
2515 | ses->serverDomain = kzalloc(len + 1, |
2516 | GFP_KERNEL); | |
fb8c4b14 | 2517 | if (ses->serverDomain == NULL) |
433dc24f | 2518 | goto sesssetup_nomem; |
50c2f753 SF |
2519 | strncpy(ses->serverDomain, bcc_ptr, |
2520 | len); | |
1da177e4 LT |
2521 | bcc_ptr += len; |
2522 | bcc_ptr[0] = 0; | |
2523 | bcc_ptr++; | |
2524 | } else | |
2525 | cFYI(1, | |
50c2f753 SF |
2526 | ("Variable field of length %d " |
2527 | "extends beyond end of smb ", | |
1da177e4 LT |
2528 | len)); |
2529 | } | |
2530 | } else { | |
2531 | cERROR(1, | |
50c2f753 SF |
2532 | (" Security Blob Length extends beyond " |
2533 | "end of SMB")); | |
1da177e4 LT |
2534 | } |
2535 | } else { | |
2536 | cERROR(1, | |
2537 | (" Invalid Word count %d: ", | |
2538 | smb_buffer_response->WordCount)); | |
2539 | rc = -EIO; | |
2540 | } | |
433dc24f SF |
2541 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2542 | since that could make reconnection harder, and | |
2543 | reconnection might be needed to free memory */ | |
a8a11d39 | 2544 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2545 | |
2546 | return rc; | |
2547 | } | |
2548 | ||
1da177e4 LT |
2549 | static int |
2550 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
50c2f753 | 2551 | struct cifsSesInfo *ses, int *pNTLMv2_flag, |
1da177e4 LT |
2552 | const struct nls_table *nls_codepage) |
2553 | { | |
2554 | struct smb_hdr *smb_buffer; | |
2555 | struct smb_hdr *smb_buffer_response; | |
2556 | SESSION_SETUP_ANDX *pSMB; | |
2557 | SESSION_SETUP_ANDX *pSMBr; | |
2558 | char *bcc_ptr; | |
2559 | char *domain; | |
2560 | int rc = 0; | |
2561 | int remaining_words = 0; | |
2562 | int bytes_returned = 0; | |
2563 | int len; | |
6345a3a8 | 2564 | int SecurityBlobLength = sizeof(NEGOTIATE_MESSAGE); |
1da177e4 LT |
2565 | PNEGOTIATE_MESSAGE SecurityBlob; |
2566 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2567 | __u32 negotiate_flags, capabilities; | |
2568 | __u16 count; | |
2569 | ||
12b3b8ff | 2570 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
fb8c4b14 | 2571 | if (ses == NULL) |
1da177e4 LT |
2572 | return -EINVAL; |
2573 | domain = ses->domainName; | |
2574 | *pNTLMv2_flag = FALSE; | |
2575 | smb_buffer = cifs_buf_get(); | |
2576 | if (smb_buffer == NULL) { | |
2577 | return -ENOMEM; | |
2578 | } | |
2579 | smb_buffer_response = smb_buffer; | |
2580 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2581 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2582 | ||
2583 | /* send SMBsessionSetup here */ | |
2584 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2585 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2586 | |
2587 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2588 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2589 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2590 | ||
2591 | pSMB->req.AndXCommand = 0xFF; | |
2592 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2593 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2594 | ||
fb8c4b14 | 2595 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2596 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2597 | ||
2598 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2599 | CAP_EXTENDED_SECURITY; | |
2600 | if (ses->capabilities & CAP_UNICODE) { | |
2601 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2602 | capabilities |= CAP_UNICODE; | |
2603 | } | |
2604 | if (ses->capabilities & CAP_STATUS32) { | |
2605 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2606 | capabilities |= CAP_STATUS32; | |
2607 | } | |
2608 | if (ses->capabilities & CAP_DFS) { | |
2609 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2610 | capabilities |= CAP_DFS; | |
2611 | } | |
2612 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2613 | ||
2614 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2615 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2616 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2617 | SecurityBlob->MessageType = NtLmNegotiate; | |
2618 | negotiate_flags = | |
2619 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2620 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2621 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 | 2622 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
fb8c4b14 | 2623 | if (sign_CIFS_PDUs) |
1da177e4 | 2624 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 2625 | /* if (ntlmv2_support) |
3979877e | 2626 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ |
1da177e4 LT |
2627 | /* setup pointers to domain name and workstation name */ |
2628 | bcc_ptr += SecurityBlobLength; | |
2629 | ||
2630 | SecurityBlob->WorkstationName.Buffer = 0; | |
2631 | SecurityBlob->WorkstationName.Length = 0; | |
2632 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2633 | ||
12b3b8ff SF |
2634 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2635 | along with username on auth request (ie the response to challenge) */ | |
2636 | SecurityBlob->DomainName.Buffer = 0; | |
2637 | SecurityBlob->DomainName.Length = 0; | |
2638 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2639 | if (ses->capabilities & CAP_UNICODE) { |
2640 | if ((long) bcc_ptr % 2) { | |
2641 | *bcc_ptr = 0; | |
2642 | bcc_ptr++; | |
2643 | } | |
2644 | ||
2645 | bytes_returned = | |
e89dc920 | 2646 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2647 | 32, nls_codepage); |
2648 | bcc_ptr += 2 * bytes_returned; | |
2649 | bytes_returned = | |
e9ff3990 | 2650 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2651 | nls_codepage); |
2652 | bcc_ptr += 2 * bytes_returned; | |
2653 | bcc_ptr += 2; /* null terminate Linux version */ | |
2654 | bytes_returned = | |
e89dc920 | 2655 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2656 | 64, nls_codepage); |
2657 | bcc_ptr += 2 * bytes_returned; | |
2658 | *(bcc_ptr + 1) = 0; | |
2659 | *(bcc_ptr + 2) = 0; | |
2660 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2661 | *(bcc_ptr + 1) = 0; | |
2662 | *(bcc_ptr + 2) = 0; | |
2663 | bcc_ptr += 2; /* null domain */ | |
2664 | } else { /* ASCII */ | |
2665 | strcpy(bcc_ptr, "Linux version "); | |
2666 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2667 | strcpy(bcc_ptr, utsname()->release); |
2668 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2669 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2670 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2671 | bcc_ptr++; /* empty domain field */ | |
2672 | *bcc_ptr = 0; | |
2673 | } | |
2674 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2675 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2676 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2677 | smb_buffer->smb_buf_length += count; | |
2678 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2679 | ||
2680 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2681 | &bytes_returned, 1); | |
2682 | ||
2683 | if (smb_buffer_response->Status.CifsError == | |
2684 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2685 | rc = 0; | |
2686 | ||
2687 | if (rc) { | |
2688 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2689 | } else if ((smb_buffer_response->WordCount == 3) | |
2690 | || (smb_buffer_response->WordCount == 4)) { | |
2691 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2692 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2693 | ||
2694 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2695 | cFYI(1, (" Guest login")); |
2696 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
1da177e4 | 2697 | |
50c2f753 SF |
2698 | bcc_ptr = pByteArea(smb_buffer_response); |
2699 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
2700 | |
2701 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2702 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2703 | cFYI(1, | |
2704 | ("Unexpected NTLMSSP message type received %d", | |
2705 | SecurityBlob2->MessageType)); | |
2706 | } else if (ses) { | |
50c2f753 | 2707 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ |
12b3b8ff | 2708 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2709 | if ((pSMBr->resp.hdr.WordCount == 3) |
2710 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2711 | && (blob_len < | |
2712 | pSMBr->resp.ByteCount))) { | |
2713 | ||
2714 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2715 | bcc_ptr += blob_len; | |
12b3b8ff | 2716 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2717 | blob_len)); |
2718 | } | |
2719 | ||
12b3b8ff | 2720 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2721 | |
2722 | memcpy(ses->server->cryptKey, | |
2723 | SecurityBlob2->Challenge, | |
2724 | CIFS_CRYPTO_KEY_SIZE); | |
50c2f753 | 2725 | if (SecurityBlob2->NegotiateFlags & |
12b3b8ff | 2726 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) |
1da177e4 LT |
2727 | *pNTLMv2_flag = TRUE; |
2728 | ||
50c2f753 SF |
2729 | if ((SecurityBlob2->NegotiateFlags & |
2730 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
1da177e4 | 2731 | || (sign_CIFS_PDUs > 1)) |
50c2f753 SF |
2732 | ses->server->secMode |= |
2733 | SECMODE_SIGN_REQUIRED; | |
2734 | if ((SecurityBlob2->NegotiateFlags & | |
1da177e4 | 2735 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) |
50c2f753 | 2736 | ses->server->secMode |= |
1da177e4 LT |
2737 | SECMODE_SIGN_ENABLED; |
2738 | ||
2739 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2740 | if ((long) (bcc_ptr) % 2) { | |
2741 | remaining_words = | |
2742 | (BCC(smb_buffer_response) | |
2743 | - 1) / 2; | |
50c2f753 SF |
2744 | /* Must word align unicode strings */ |
2745 | bcc_ptr++; | |
1da177e4 LT |
2746 | } else { |
2747 | remaining_words = | |
2748 | BCC | |
2749 | (smb_buffer_response) / 2; | |
2750 | } | |
2751 | len = | |
2752 | UniStrnlen((wchar_t *) bcc_ptr, | |
2753 | remaining_words - 1); | |
2754 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2755 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2756 | terminating last Unicode string in response */ | |
fb8c4b14 | 2757 | if (ses->serverOS) |
a424f8bf | 2758 | kfree(ses->serverOS); |
1da177e4 | 2759 | ses->serverOS = |
e915fc49 | 2760 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2761 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2762 | (__le16 *) |
1da177e4 LT |
2763 | bcc_ptr, len, |
2764 | nls_codepage); | |
2765 | bcc_ptr += 2 * (len + 1); | |
2766 | remaining_words -= len + 1; | |
2767 | ses->serverOS[2 * len] = 0; | |
2768 | ses->serverOS[1 + (2 * len)] = 0; | |
2769 | if (remaining_words > 0) { | |
2770 | len = UniStrnlen((wchar_t *) | |
2771 | bcc_ptr, | |
2772 | remaining_words | |
2773 | - 1); | |
cd49b492 | 2774 | kfree(ses->serverNOS); |
1da177e4 | 2775 | ses->serverNOS = |
e915fc49 | 2776 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2777 | GFP_KERNEL); |
2778 | cifs_strfromUCS_le(ses-> | |
2779 | serverNOS, | |
e89dc920 | 2780 | (__le16 *) |
1da177e4 LT |
2781 | bcc_ptr, |
2782 | len, | |
2783 | nls_codepage); | |
2784 | bcc_ptr += 2 * (len + 1); | |
2785 | ses->serverNOS[2 * len] = 0; | |
2786 | ses->serverNOS[1 + | |
2787 | (2 * len)] = 0; | |
2788 | remaining_words -= len + 1; | |
2789 | if (remaining_words > 0) { | |
50c2f753 SF |
2790 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
2791 | /* last string not always null terminated | |
2792 | (for e.g. for Windows XP & 2000) */ | |
cd49b492 | 2793 | kfree(ses->serverDomain); |
1da177e4 | 2794 | ses->serverDomain = |
e915fc49 | 2795 | kzalloc(2 * |
1da177e4 LT |
2796 | (len + |
2797 | 1), | |
2798 | GFP_KERNEL); | |
2799 | cifs_strfromUCS_le | |
e89dc920 SF |
2800 | (ses->serverDomain, |
2801 | (__le16 *)bcc_ptr, | |
2802 | len, nls_codepage); | |
1da177e4 LT |
2803 | bcc_ptr += |
2804 | 2 * (len + 1); | |
e89dc920 | 2805 | ses->serverDomain[2*len] |
1da177e4 | 2806 | = 0; |
e89dc920 SF |
2807 | ses->serverDomain |
2808 | [1 + (2 * len)] | |
1da177e4 LT |
2809 | = 0; |
2810 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 2811 | else { |
cd49b492 | 2812 | kfree(ses->serverDomain); |
1da177e4 | 2813 | ses->serverDomain = |
e915fc49 | 2814 | kzalloc(2, |
1da177e4 | 2815 | GFP_KERNEL); |
a424f8bf | 2816 | } |
1da177e4 | 2817 | } else { /* no room so create dummy domain and NOS string */ |
cd49b492 | 2818 | kfree(ses->serverDomain); |
1da177e4 | 2819 | ses->serverDomain = |
e915fc49 | 2820 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2821 | kfree(ses->serverNOS); |
1da177e4 | 2822 | ses->serverNOS = |
e915fc49 | 2823 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2824 | } |
2825 | } else { /* ASCII */ | |
2826 | len = strnlen(bcc_ptr, 1024); | |
2827 | if (((long) bcc_ptr + len) - (long) | |
2828 | pByteArea(smb_buffer_response) | |
2829 | <= BCC(smb_buffer_response)) { | |
fb8c4b14 | 2830 | if (ses->serverOS) |
a424f8bf | 2831 | kfree(ses->serverOS); |
1da177e4 | 2832 | ses->serverOS = |
e915fc49 | 2833 | kzalloc(len + 1, |
1da177e4 LT |
2834 | GFP_KERNEL); |
2835 | strncpy(ses->serverOS, | |
2836 | bcc_ptr, len); | |
2837 | ||
2838 | bcc_ptr += len; | |
2839 | bcc_ptr[0] = 0; /* null terminate string */ | |
2840 | bcc_ptr++; | |
2841 | ||
2842 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2843 | kfree(ses->serverNOS); |
1da177e4 | 2844 | ses->serverNOS = |
e915fc49 | 2845 | kzalloc(len + 1, |
1da177e4 LT |
2846 | GFP_KERNEL); |
2847 | strncpy(ses->serverNOS, bcc_ptr, len); | |
2848 | bcc_ptr += len; | |
2849 | bcc_ptr[0] = 0; | |
2850 | bcc_ptr++; | |
2851 | ||
2852 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2853 | kfree(ses->serverDomain); |
1da177e4 | 2854 | ses->serverDomain = |
e915fc49 | 2855 | kzalloc(len + 1, |
1da177e4 | 2856 | GFP_KERNEL); |
50c2f753 SF |
2857 | strncpy(ses->serverDomain, |
2858 | bcc_ptr, len); | |
1da177e4 LT |
2859 | bcc_ptr += len; |
2860 | bcc_ptr[0] = 0; | |
2861 | bcc_ptr++; | |
2862 | } else | |
2863 | cFYI(1, | |
63135e08 SF |
2864 | ("field of length %d " |
2865 | "extends beyond end of smb", | |
1da177e4 LT |
2866 | len)); |
2867 | } | |
2868 | } else { | |
50c2f753 SF |
2869 | cERROR(1, ("Security Blob Length extends beyond" |
2870 | " end of SMB")); | |
1da177e4 LT |
2871 | } |
2872 | } else { | |
2873 | cERROR(1, ("No session structure passed in.")); | |
2874 | } | |
2875 | } else { | |
2876 | cERROR(1, | |
5815449d | 2877 | (" Invalid Word count %d:", |
1da177e4 LT |
2878 | smb_buffer_response->WordCount)); |
2879 | rc = -EIO; | |
2880 | } | |
2881 | ||
a8a11d39 | 2882 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2883 | |
2884 | return rc; | |
2885 | } | |
2886 | static int | |
2887 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
6345a3a8 CG |
2888 | char *ntlm_session_key, int ntlmv2_flag, |
2889 | const struct nls_table *nls_codepage) | |
1da177e4 LT |
2890 | { |
2891 | struct smb_hdr *smb_buffer; | |
2892 | struct smb_hdr *smb_buffer_response; | |
2893 | SESSION_SETUP_ANDX *pSMB; | |
2894 | SESSION_SETUP_ANDX *pSMBr; | |
2895 | char *bcc_ptr; | |
2896 | char *user; | |
2897 | char *domain; | |
2898 | int rc = 0; | |
2899 | int remaining_words = 0; | |
2900 | int bytes_returned = 0; | |
2901 | int len; | |
6345a3a8 | 2902 | int SecurityBlobLength = sizeof(AUTHENTICATE_MESSAGE); |
1da177e4 LT |
2903 | PAUTHENTICATE_MESSAGE SecurityBlob; |
2904 | __u32 negotiate_flags, capabilities; | |
2905 | __u16 count; | |
2906 | ||
2907 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
fb8c4b14 | 2908 | if (ses == NULL) |
1da177e4 LT |
2909 | return -EINVAL; |
2910 | user = ses->userName; | |
2911 | domain = ses->domainName; | |
2912 | smb_buffer = cifs_buf_get(); | |
2913 | if (smb_buffer == NULL) { | |
2914 | return -ENOMEM; | |
2915 | } | |
2916 | smb_buffer_response = smb_buffer; | |
6345a3a8 CG |
2917 | pSMB = (SESSION_SETUP_ANDX *)smb_buffer; |
2918 | pSMBr = (SESSION_SETUP_ANDX *)smb_buffer_response; | |
1da177e4 LT |
2919 | |
2920 | /* send SMBsessionSetup here */ | |
2921 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2922 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2923 | |
2924 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2925 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
2926 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2927 | pSMB->req.AndXCommand = 0xFF; | |
2928 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2929 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2930 | ||
2931 | pSMB->req.hdr.Uid = ses->Suid; | |
2932 | ||
fb8c4b14 | 2933 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2934 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2935 | ||
2936 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
6345a3a8 | 2937 | CAP_EXTENDED_SECURITY; |
1da177e4 LT |
2938 | if (ses->capabilities & CAP_UNICODE) { |
2939 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2940 | capabilities |= CAP_UNICODE; | |
2941 | } | |
2942 | if (ses->capabilities & CAP_STATUS32) { | |
2943 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2944 | capabilities |= CAP_STATUS32; | |
2945 | } | |
2946 | if (ses->capabilities & CAP_DFS) { | |
2947 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2948 | capabilities |= CAP_DFS; | |
2949 | } | |
2950 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2951 | ||
6345a3a8 CG |
2952 | bcc_ptr = (char *)&pSMB->req.SecurityBlob; |
2953 | SecurityBlob = (PAUTHENTICATE_MESSAGE)bcc_ptr; | |
1da177e4 LT |
2954 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); |
2955 | SecurityBlob->MessageType = NtLmAuthenticate; | |
2956 | bcc_ptr += SecurityBlobLength; | |
6345a3a8 CG |
2957 | negotiate_flags = NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | |
2958 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
2959 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
fb8c4b14 | 2960 | if (sign_CIFS_PDUs) |
1da177e4 | 2961 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 2962 | if (ntlmv2_flag) |
1da177e4 LT |
2963 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; |
2964 | ||
2965 | /* setup pointers to domain name and workstation name */ | |
2966 | ||
2967 | SecurityBlob->WorkstationName.Buffer = 0; | |
2968 | SecurityBlob->WorkstationName.Length = 0; | |
2969 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2970 | SecurityBlob->SessionKey.Length = 0; | |
2971 | SecurityBlob->SessionKey.MaximumLength = 0; | |
2972 | SecurityBlob->SessionKey.Buffer = 0; | |
2973 | ||
2974 | SecurityBlob->LmChallengeResponse.Length = 0; | |
2975 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
2976 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
2977 | ||
2978 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 2979 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2980 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
2981 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
2982 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
2983 | SecurityBlob->NtChallengeResponse.Buffer = |
2984 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
2985 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
2986 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2987 | |
2988 | if (ses->capabilities & CAP_UNICODE) { | |
2989 | if (domain == NULL) { | |
2990 | SecurityBlob->DomainName.Buffer = 0; | |
2991 | SecurityBlob->DomainName.Length = 0; | |
2992 | SecurityBlob->DomainName.MaximumLength = 0; | |
2993 | } else { | |
77159b4d | 2994 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 | 2995 | nls_codepage); |
77159b4d | 2996 | ln *= 2; |
1da177e4 | 2997 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 2998 | cpu_to_le16(ln); |
1da177e4 LT |
2999 | SecurityBlob->DomainName.Buffer = |
3000 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3001 | bcc_ptr += ln; |
3002 | SecurityBlobLength += ln; | |
3003 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3004 | } |
3005 | if (user == NULL) { | |
3006 | SecurityBlob->UserName.Buffer = 0; | |
3007 | SecurityBlob->UserName.Length = 0; | |
3008 | SecurityBlob->UserName.MaximumLength = 0; | |
3009 | } else { | |
77159b4d | 3010 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 | 3011 | nls_codepage); |
77159b4d | 3012 | ln *= 2; |
1da177e4 | 3013 | SecurityBlob->UserName.MaximumLength = |
77159b4d | 3014 | cpu_to_le16(ln); |
1da177e4 LT |
3015 | SecurityBlob->UserName.Buffer = |
3016 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3017 | bcc_ptr += ln; |
3018 | SecurityBlobLength += ln; | |
3019 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3020 | } |
3021 | ||
63135e08 SF |
3022 | /* SecurityBlob->WorkstationName.Length = |
3023 | cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); | |
1da177e4 | 3024 | SecurityBlob->WorkstationName.Length *= 2; |
63135e08 SF |
3025 | SecurityBlob->WorkstationName.MaximumLength = |
3026 | cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
3027 | SecurityBlob->WorkstationName.Buffer = | |
3028 | cpu_to_le32(SecurityBlobLength); | |
1da177e4 LT |
3029 | bcc_ptr += SecurityBlob->WorkstationName.Length; |
3030 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
63135e08 SF |
3031 | SecurityBlob->WorkstationName.Length = |
3032 | cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
1da177e4 LT |
3033 | |
3034 | if ((long) bcc_ptr % 2) { | |
3035 | *bcc_ptr = 0; | |
3036 | bcc_ptr++; | |
3037 | } | |
3038 | bytes_returned = | |
e89dc920 | 3039 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
3040 | 32, nls_codepage); |
3041 | bcc_ptr += 2 * bytes_returned; | |
3042 | bytes_returned = | |
e9ff3990 | 3043 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
3044 | nls_codepage); |
3045 | bcc_ptr += 2 * bytes_returned; | |
3046 | bcc_ptr += 2; /* null term version string */ | |
3047 | bytes_returned = | |
e89dc920 | 3048 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
3049 | 64, nls_codepage); |
3050 | bcc_ptr += 2 * bytes_returned; | |
3051 | *(bcc_ptr + 1) = 0; | |
3052 | *(bcc_ptr + 2) = 0; | |
3053 | bcc_ptr += 2; /* null terminate network opsys string */ | |
3054 | *(bcc_ptr + 1) = 0; | |
3055 | *(bcc_ptr + 2) = 0; | |
3056 | bcc_ptr += 2; /* null domain */ | |
3057 | } else { /* ASCII */ | |
3058 | if (domain == NULL) { | |
3059 | SecurityBlob->DomainName.Buffer = 0; | |
3060 | SecurityBlob->DomainName.Length = 0; | |
3061 | SecurityBlob->DomainName.MaximumLength = 0; | |
3062 | } else { | |
77159b4d | 3063 | __u16 ln; |
1da177e4 LT |
3064 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; |
3065 | strncpy(bcc_ptr, domain, 63); | |
77159b4d | 3066 | ln = strnlen(domain, 64); |
1da177e4 | 3067 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3068 | cpu_to_le16(ln); |
1da177e4 LT |
3069 | SecurityBlob->DomainName.Buffer = |
3070 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3071 | bcc_ptr += ln; |
3072 | SecurityBlobLength += ln; | |
3073 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3074 | } |
3075 | if (user == NULL) { | |
3076 | SecurityBlob->UserName.Buffer = 0; | |
3077 | SecurityBlob->UserName.Length = 0; | |
3078 | SecurityBlob->UserName.MaximumLength = 0; | |
3079 | } else { | |
77159b4d | 3080 | __u16 ln; |
1da177e4 | 3081 | strncpy(bcc_ptr, user, 63); |
77159b4d SF |
3082 | ln = strnlen(user, 64); |
3083 | SecurityBlob->UserName.MaximumLength = cpu_to_le16(ln); | |
1da177e4 | 3084 | SecurityBlob->UserName.Buffer = |
77159b4d SF |
3085 | cpu_to_le32(SecurityBlobLength); |
3086 | bcc_ptr += ln; | |
3087 | SecurityBlobLength += ln; | |
3088 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3089 | } |
3090 | /* BB fill in our workstation name if known BB */ | |
3091 | ||
3092 | strcpy(bcc_ptr, "Linux version "); | |
3093 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
3094 | strcpy(bcc_ptr, utsname()->release); |
3095 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
3096 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
3097 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
3098 | bcc_ptr++; /* null domain */ | |
3099 | *bcc_ptr = 0; | |
3100 | } | |
3101 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
3102 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
3103 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
3104 | smb_buffer->smb_buf_length += count; | |
3105 | pSMB->req.ByteCount = cpu_to_le16(count); | |
3106 | ||
3107 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
3108 | &bytes_returned, 1); | |
3109 | if (rc) { | |
6345a3a8 CG |
3110 | /* rc = map_smb_to_linux_error(smb_buffer_response) done in SendReceive now */ |
3111 | } else if ((smb_buffer_response->WordCount == 3) || | |
3112 | (smb_buffer_response->WordCount == 4)) { | |
1da177e4 | 3113 | __u16 action = le16_to_cpu(pSMBr->resp.Action); |
6345a3a8 | 3114 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); |
1da177e4 | 3115 | if (action & GUEST_LOGIN) |
50c2f753 SF |
3116 | cFYI(1, (" Guest login")); /* BB Should we set anything |
3117 | in SesInfo struct ? */ | |
3118 | /* if (SecurityBlob2->MessageType != NtLm??) { | |
3119 | cFYI("Unexpected message type on auth response is %d")); | |
3120 | } */ | |
3121 | ||
1da177e4 LT |
3122 | if (ses) { |
3123 | cFYI(1, | |
50c2f753 | 3124 | ("Check challenge UID %d vs auth response UID %d", |
1da177e4 | 3125 | ses->Suid, smb_buffer_response->Uid)); |
50c2f753 SF |
3126 | /* UID left in wire format */ |
3127 | ses->Suid = smb_buffer_response->Uid; | |
3128 | bcc_ptr = pByteArea(smb_buffer_response); | |
3129 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
3130 | if ((pSMBr->resp.hdr.WordCount == 3) |
3131 | || ((pSMBr->resp.hdr.WordCount == 4) | |
3132 | && (blob_len < | |
3133 | pSMBr->resp.ByteCount))) { | |
3134 | if (pSMBr->resp.hdr.WordCount == 4) { | |
3135 | bcc_ptr += | |
3136 | blob_len; | |
3137 | cFYI(1, | |
3138 | ("Security Blob Length %d ", | |
3139 | blob_len)); | |
3140 | } | |
3141 | ||
3142 | cFYI(1, | |
3143 | ("NTLMSSP response to Authenticate ")); | |
3144 | ||
3145 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3146 | if ((long) (bcc_ptr) % 2) { | |
3147 | remaining_words = | |
3148 | (BCC(smb_buffer_response) | |
3149 | - 1) / 2; | |
3150 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
3151 | } else { | |
3152 | remaining_words = BCC(smb_buffer_response) / 2; | |
3153 | } | |
77159b4d SF |
3154 | len = UniStrnlen((wchar_t *) bcc_ptr, |
3155 | remaining_words - 1); | |
1da177e4 LT |
3156 | /* We look for obvious messed up bcc or strings in response so we do not go off |
3157 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
3158 | terminating last Unicode string in response */ | |
fb8c4b14 | 3159 | if (ses->serverOS) |
08775834 | 3160 | kfree(ses->serverOS); |
1da177e4 | 3161 | ses->serverOS = |
e915fc49 | 3162 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 3163 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 3164 | (__le16 *) |
1da177e4 LT |
3165 | bcc_ptr, len, |
3166 | nls_codepage); | |
3167 | bcc_ptr += 2 * (len + 1); | |
3168 | remaining_words -= len + 1; | |
3169 | ses->serverOS[2 * len] = 0; | |
3170 | ses->serverOS[1 + (2 * len)] = 0; | |
3171 | if (remaining_words > 0) { | |
3172 | len = UniStrnlen((wchar_t *) | |
3173 | bcc_ptr, | |
3174 | remaining_words | |
3175 | - 1); | |
cd49b492 | 3176 | kfree(ses->serverNOS); |
1da177e4 | 3177 | ses->serverNOS = |
e915fc49 | 3178 | kzalloc(2 * (len + 1), |
1da177e4 LT |
3179 | GFP_KERNEL); |
3180 | cifs_strfromUCS_le(ses-> | |
3181 | serverNOS, | |
e89dc920 | 3182 | (__le16 *) |
1da177e4 LT |
3183 | bcc_ptr, |
3184 | len, | |
3185 | nls_codepage); | |
3186 | bcc_ptr += 2 * (len + 1); | |
3187 | ses->serverNOS[2 * len] = 0; | |
3188 | ses->serverNOS[1+(2*len)] = 0; | |
3189 | remaining_words -= len + 1; | |
3190 | if (remaining_words > 0) { | |
50c2f753 | 3191 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 3192 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ |
fb8c4b14 | 3193 | if (ses->serverDomain) |
a424f8bf | 3194 | kfree(ses->serverDomain); |
1da177e4 | 3195 | ses->serverDomain = |
e915fc49 | 3196 | kzalloc(2 * |
1da177e4 LT |
3197 | (len + |
3198 | 1), | |
3199 | GFP_KERNEL); | |
3200 | cifs_strfromUCS_le | |
3201 | (ses-> | |
3202 | serverDomain, | |
e89dc920 | 3203 | (__le16 *) |
1da177e4 LT |
3204 | bcc_ptr, len, |
3205 | nls_codepage); | |
3206 | bcc_ptr += | |
3207 | 2 * (len + 1); | |
3208 | ses-> | |
3209 | serverDomain[2 | |
3210 | * len] | |
3211 | = 0; | |
3212 | ses-> | |
3213 | serverDomain[1 | |
3214 | + | |
3215 | (2 | |
3216 | * | |
3217 | len)] | |
3218 | = 0; | |
3219 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 3220 | else { |
fb8c4b14 | 3221 | if (ses->serverDomain) |
a424f8bf | 3222 | kfree(ses->serverDomain); |
e915fc49 | 3223 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 3224 | } |
1da177e4 | 3225 | } else { /* no room so create dummy domain and NOS string */ |
fb8c4b14 | 3226 | if (ses->serverDomain) |
a424f8bf | 3227 | kfree(ses->serverDomain); |
e915fc49 | 3228 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 3229 | kfree(ses->serverNOS); |
e915fc49 | 3230 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3231 | } |
3232 | } else { /* ASCII */ | |
3233 | len = strnlen(bcc_ptr, 1024); | |
50c2f753 SF |
3234 | if (((long) bcc_ptr + len) - |
3235 | (long) pByteArea(smb_buffer_response) | |
63135e08 | 3236 | <= BCC(smb_buffer_response)) { |
fb8c4b14 | 3237 | if (ses->serverOS) |
a424f8bf | 3238 | kfree(ses->serverOS); |
77159b4d | 3239 | ses->serverOS = kzalloc(len + 1, GFP_KERNEL); |
1da177e4 LT |
3240 | strncpy(ses->serverOS,bcc_ptr, len); |
3241 | ||
3242 | bcc_ptr += len; | |
3243 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3244 | bcc_ptr++; | |
3245 | ||
3246 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3247 | kfree(ses->serverNOS); |
50c2f753 SF |
3248 | ses->serverNOS = kzalloc(len+1, |
3249 | GFP_KERNEL); | |
63135e08 SF |
3250 | strncpy(ses->serverNOS, |
3251 | bcc_ptr, len); | |
1da177e4 LT |
3252 | bcc_ptr += len; |
3253 | bcc_ptr[0] = 0; | |
3254 | bcc_ptr++; | |
3255 | ||
3256 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 3257 | if (ses->serverDomain) |
a424f8bf | 3258 | kfree(ses->serverDomain); |
63135e08 SF |
3259 | ses->serverDomain = |
3260 | kzalloc(len+1, | |
3261 | GFP_KERNEL); | |
3262 | strncpy(ses->serverDomain, | |
3263 | bcc_ptr, len); | |
1da177e4 LT |
3264 | bcc_ptr += len; |
3265 | bcc_ptr[0] = 0; | |
3266 | bcc_ptr++; | |
3267 | } else | |
6345a3a8 | 3268 | cFYI(1, ("field of length %d " |
63135e08 | 3269 | "extends beyond end of smb ", |
1da177e4 LT |
3270 | len)); |
3271 | } | |
3272 | } else { | |
6345a3a8 | 3273 | cERROR(1, ("Security Blob extends beyond end " |
63135e08 | 3274 | "of SMB")); |
1da177e4 LT |
3275 | } |
3276 | } else { | |
3277 | cERROR(1, ("No session structure passed in.")); | |
3278 | } | |
3279 | } else { | |
6345a3a8 | 3280 | cERROR(1, ("Invalid Word count %d: ", |
1da177e4 LT |
3281 | smb_buffer_response->WordCount)); |
3282 | rc = -EIO; | |
3283 | } | |
3284 | ||
a8a11d39 | 3285 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3286 | |
3287 | return rc; | |
3288 | } | |
3289 | ||
3290 | int | |
3291 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3292 | const char *tree, struct cifsTconInfo *tcon, | |
3293 | const struct nls_table *nls_codepage) | |
3294 | { | |
3295 | struct smb_hdr *smb_buffer; | |
3296 | struct smb_hdr *smb_buffer_response; | |
3297 | TCONX_REQ *pSMB; | |
3298 | TCONX_RSP *pSMBr; | |
3299 | unsigned char *bcc_ptr; | |
3300 | int rc = 0; | |
3301 | int length; | |
3302 | __u16 count; | |
3303 | ||
3304 | if (ses == NULL) | |
3305 | return -EIO; | |
3306 | ||
3307 | smb_buffer = cifs_buf_get(); | |
3308 | if (smb_buffer == NULL) { | |
3309 | return -ENOMEM; | |
3310 | } | |
3311 | smb_buffer_response = smb_buffer; | |
3312 | ||
3313 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3314 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3315 | |
3316 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3317 | smb_buffer->Uid = ses->Suid; |
3318 | pSMB = (TCONX_REQ *) smb_buffer; | |
3319 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3320 | ||
3321 | pSMB->AndXCommand = 0xFF; | |
3322 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3323 | bcc_ptr = &pSMB->Password[0]; |
fb8c4b14 | 3324 | if ((ses->server->secMode) & SECMODE_USER) { |
eeac8047 | 3325 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
7c7b25bc | 3326 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3327 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3328 | /* already aligned so no need to do it below */ |
eeac8047 | 3329 | } else { |
7c7b25bc | 3330 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3331 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3332 | specified as required (when that support is added to | |
3333 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3334 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3335 | by Samba (not sure whether other servers allow |
3336 | NTLMv2 password here) */ | |
7c7b25bc | 3337 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
50c2f753 | 3338 | if ((extended_security & CIFSSEC_MAY_LANMAN) && |
7c7b25bc SF |
3339 | (ses->server->secType == LANMAN)) |
3340 | calc_lanman_hash(ses, bcc_ptr); | |
3341 | else | |
3342 | #endif /* CIFS_WEAK_PW_HASH */ | |
eeac8047 SF |
3343 | SMBNTencrypt(ses->password, |
3344 | ses->server->cryptKey, | |
3345 | bcc_ptr); | |
3346 | ||
7c7b25bc | 3347 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
fb8c4b14 | 3348 | if (ses->capabilities & CAP_UNICODE) { |
7c7b25bc SF |
3349 | /* must align unicode strings */ |
3350 | *bcc_ptr = 0; /* null byte password */ | |
3351 | bcc_ptr++; | |
3352 | } | |
eeac8047 | 3353 | } |
1da177e4 | 3354 | |
50c2f753 | 3355 | if (ses->server->secMode & |
a878fb22 | 3356 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3357 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3358 | ||
3359 | if (ses->capabilities & CAP_STATUS32) { | |
3360 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3361 | } | |
3362 | if (ses->capabilities & CAP_DFS) { | |
3363 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3364 | } | |
3365 | if (ses->capabilities & CAP_UNICODE) { | |
3366 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3367 | length = | |
50c2f753 SF |
3368 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3369 | 6 /* max utf8 char length in bytes */ * | |
a878fb22 SF |
3370 | (/* server len*/ + 256 /* share len */), nls_codepage); |
3371 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3372 | bcc_ptr += 2; /* skip trailing null */ |
3373 | } else { /* ASCII */ | |
1da177e4 LT |
3374 | strcpy(bcc_ptr, tree); |
3375 | bcc_ptr += strlen(tree) + 1; | |
3376 | } | |
3377 | strcpy(bcc_ptr, "?????"); | |
3378 | bcc_ptr += strlen("?????"); | |
3379 | bcc_ptr += 1; | |
3380 | count = bcc_ptr - &pSMB->Password[0]; | |
3381 | pSMB->hdr.smb_buf_length += count; | |
3382 | pSMB->ByteCount = cpu_to_le16(count); | |
3383 | ||
3384 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, 0); | |
3385 | ||
3386 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3387 | /* above now done in SendReceive */ | |
3388 | if ((rc == 0) && (tcon != NULL)) { | |
3389 | tcon->tidStatus = CifsGood; | |
3390 | tcon->tid = smb_buffer_response->Tid; | |
3391 | bcc_ptr = pByteArea(smb_buffer_response); | |
3392 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
50c2f753 | 3393 | /* skip service field (NB: this field is always ASCII) */ |
7f8ed420 SF |
3394 | if (length == 3) { |
3395 | if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') && | |
3396 | (bcc_ptr[2] == 'C')) { | |
3397 | cFYI(1, ("IPC connection")); | |
3398 | tcon->ipc = 1; | |
3399 | } | |
3400 | } else if (length == 2) { | |
3401 | if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) { | |
3402 | /* the most common case */ | |
3403 | cFYI(1, ("disk share connection")); | |
3404 | } | |
3405 | } | |
50c2f753 | 3406 | bcc_ptr += length + 1; |
1da177e4 LT |
3407 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
3408 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3409 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3410 | if ((bcc_ptr + (2 * length)) - | |
3411 | pByteArea(smb_buffer_response) <= | |
3412 | BCC(smb_buffer_response)) { | |
f99d49ad | 3413 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3414 | tcon->nativeFileSystem = |
e915fc49 | 3415 | kzalloc(length + 2, GFP_KERNEL); |
88f370a6 SF |
3416 | if (tcon->nativeFileSystem) |
3417 | cifs_strfromUCS_le( | |
3418 | tcon->nativeFileSystem, | |
3419 | (__le16 *) bcc_ptr, | |
3420 | length, nls_codepage); | |
1da177e4 LT |
3421 | bcc_ptr += 2 * length; |
3422 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3423 | bcc_ptr[1] = 0; | |
3424 | bcc_ptr += 2; | |
3425 | } | |
50c2f753 | 3426 | /* else do not bother copying these information fields*/ |
1da177e4 LT |
3427 | } else { |
3428 | length = strnlen(bcc_ptr, 1024); | |
3429 | if ((bcc_ptr + length) - | |
3430 | pByteArea(smb_buffer_response) <= | |
3431 | BCC(smb_buffer_response)) { | |
f99d49ad | 3432 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3433 | tcon->nativeFileSystem = |
e915fc49 | 3434 | kzalloc(length + 1, GFP_KERNEL); |
88f370a6 SF |
3435 | if (tcon->nativeFileSystem) |
3436 | strncpy(tcon->nativeFileSystem, bcc_ptr, | |
3437 | length); | |
1da177e4 | 3438 | } |
50c2f753 | 3439 | /* else do not bother copying these information fields*/ |
1da177e4 | 3440 | } |
fb8c4b14 | 3441 | if ((smb_buffer_response->WordCount == 3) || |
1a4e15a0 SF |
3442 | (smb_buffer_response->WordCount == 7)) |
3443 | /* field is in same location */ | |
3979877e SF |
3444 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
3445 | else | |
3446 | tcon->Flags = 0; | |
1da177e4 LT |
3447 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3448 | } else if ((rc == 0) && tcon == NULL) { | |
50c2f753 | 3449 | /* all we need to save for IPC$ connection */ |
1da177e4 LT |
3450 | ses->ipc_tid = smb_buffer_response->Tid; |
3451 | } | |
3452 | ||
a8a11d39 | 3453 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3454 | return rc; |
3455 | } | |
3456 | ||
3457 | int | |
3458 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3459 | { | |
3460 | int rc = 0; | |
3461 | int xid; | |
3462 | struct cifsSesInfo *ses = NULL; | |
3463 | struct task_struct *cifsd_task; | |
50c2f753 | 3464 | char *tmp; |
1da177e4 LT |
3465 | |
3466 | xid = GetXid(); | |
3467 | ||
3468 | if (cifs_sb->tcon) { | |
3469 | ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ | |
3470 | rc = CIFSSMBTDis(xid, cifs_sb->tcon); | |
3471 | if (rc == -EBUSY) { | |
3472 | FreeXid(xid); | |
3473 | return 0; | |
3474 | } | |
3475 | tconInfoFree(cifs_sb->tcon); | |
3476 | if ((ses) && (ses->server)) { | |
3477 | /* save off task so we do not refer to ses later */ | |
3478 | cifsd_task = ses->server->tsk; | |
3479 | cFYI(1, ("About to do SMBLogoff ")); | |
3480 | rc = CIFSSMBLogoff(xid, ses); | |
3481 | if (rc == -EBUSY) { | |
3482 | FreeXid(xid); | |
3483 | return 0; | |
3484 | } else if (rc == -ESHUTDOWN) { | |
467a8f8d | 3485 | cFYI(1, ("Waking up socket by sending signal")); |
f7f7c31c | 3486 | if (cifsd_task) { |
50c2f753 | 3487 | force_sig(SIGKILL, cifsd_task); |
aaf737ad | 3488 | kthread_stop(cifsd_task); |
f191401f | 3489 | } |
1da177e4 LT |
3490 | rc = 0; |
3491 | } /* else - we have an smb session | |
3492 | left on this socket do not kill cifsd */ | |
3493 | } else | |
3494 | cFYI(1, ("No session or bad tcon")); | |
3495 | } | |
50c2f753 | 3496 | |
1da177e4 | 3497 | cifs_sb->tcon = NULL; |
2fe87f02 SF |
3498 | tmp = cifs_sb->prepath; |
3499 | cifs_sb->prepathlen = 0; | |
3500 | cifs_sb->prepath = NULL; | |
3501 | kfree(tmp); | |
041e0e3b NA |
3502 | if (ses) |
3503 | schedule_timeout_interruptible(msecs_to_jiffies(500)); | |
1da177e4 LT |
3504 | if (ses) |
3505 | sesInfoFree(ses); | |
3506 | ||
3507 | FreeXid(xid); | |
50c2f753 SF |
3508 | return rc; /* BB check if we should always return zero here */ |
3509 | } | |
1da177e4 LT |
3510 | |
3511 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
50c2f753 | 3512 | struct nls_table *nls_info) |
1da177e4 LT |
3513 | { |
3514 | int rc = 0; | |
7c7b25bc | 3515 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
1da177e4 | 3516 | int ntlmv2_flag = FALSE; |
ad009ac9 | 3517 | int first_time = 0; |
1da177e4 LT |
3518 | |
3519 | /* what if server changes its buffer size after dropping the session? */ | |
fb8c4b14 | 3520 | if (pSesInfo->server->maxBuf == 0) /* no need to send on reconnect */ { |
1da177e4 | 3521 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
fb8c4b14 | 3522 | if (rc == -EAGAIN) /* retry only once on 1st time connection */ { |
1da177e4 | 3523 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
50c2f753 | 3524 | if (rc == -EAGAIN) |
1da177e4 LT |
3525 | rc = -EHOSTDOWN; |
3526 | } | |
fb8c4b14 | 3527 | if (rc == 0) { |
1da177e4 | 3528 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 | 3529 | if (pSesInfo->server->tcpStatus != CifsExiting) |
1da177e4 LT |
3530 | pSesInfo->server->tcpStatus = CifsGood; |
3531 | else | |
3532 | rc = -EHOSTDOWN; | |
3533 | spin_unlock(&GlobalMid_Lock); | |
3534 | ||
3535 | } | |
ad009ac9 | 3536 | first_time = 1; |
1da177e4 LT |
3537 | } |
3538 | if (!rc) { | |
9ac00b7d | 3539 | pSesInfo->flags = 0; |
1da177e4 | 3540 | pSesInfo->capabilities = pSesInfo->server->capabilities; |
fb8c4b14 | 3541 | if (linuxExtEnabled == 0) |
1da177e4 | 3542 | pSesInfo->capabilities &= (~CAP_UNIX); |
ad009ac9 | 3543 | /* pSesInfo->sequence_number = 0;*/ |
50c2f753 SF |
3544 | cFYI(1, |
3545 | ("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", | |
1da177e4 LT |
3546 | pSesInfo->server->secMode, |
3547 | pSesInfo->server->capabilities, | |
175ec9e1 | 3548 | pSesInfo->server->timeAdj)); |
fb8c4b14 | 3549 | if (experimEnabled < 2) |
3979877e SF |
3550 | rc = CIFS_SessSetup(xid, pSesInfo, |
3551 | first_time, nls_info); | |
189acaae | 3552 | else if (extended_security |
50c2f753 | 3553 | && (pSesInfo->capabilities |
175ec9e1 | 3554 | & CAP_EXTENDED_SECURITY) |
1da177e4 | 3555 | && (pSesInfo->server->secType == NTLMSSP)) { |
189acaae | 3556 | rc = -EOPNOTSUPP; |
1da177e4 LT |
3557 | } else if (extended_security |
3558 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
3559 | && (pSesInfo->server->secType == RawNTLMSSP)) { | |
5815449d | 3560 | cFYI(1, ("NTLMSSP sesssetup")); |
1da177e4 LT |
3561 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, |
3562 | pSesInfo, | |
3563 | &ntlmv2_flag, | |
3564 | nls_info); | |
3565 | if (!rc) { | |
fb8c4b14 | 3566 | if (ntlmv2_flag) { |
50c2f753 | 3567 | char *v2_response; |
467a8f8d | 3568 | cFYI(1, ("more secure NTLM ver2 hash")); |
50c2f753 | 3569 | if (CalcNTLMv2_partial_mac_key(pSesInfo, |
1da177e4 LT |
3570 | nls_info)) { |
3571 | rc = -ENOMEM; | |
3572 | goto ss_err_exit; | |
3573 | } else | |
3574 | v2_response = kmalloc(16 + 64 /* blob */, GFP_KERNEL); | |
fb8c4b14 | 3575 | if (v2_response) { |
50c2f753 SF |
3576 | CalcNTLMv2_response(pSesInfo, |
3577 | v2_response); | |
fb8c4b14 | 3578 | /* if (first_time) |
50c2f753 SF |
3579 | cifs_calculate_ntlmv2_mac_key( |
3580 | pSesInfo->server->mac_signing_key, | |
3581 | response, ntlm_session_key,*/ | |
1da177e4 LT |
3582 | kfree(v2_response); |
3583 | /* BB Put dummy sig in SessSetup PDU? */ | |
3584 | } else { | |
3585 | rc = -ENOMEM; | |
3586 | goto ss_err_exit; | |
3587 | } | |
3588 | ||
3589 | } else { | |
3590 | SMBNTencrypt(pSesInfo->password, | |
3591 | pSesInfo->server->cryptKey, | |
3592 | ntlm_session_key); | |
3593 | ||
fb8c4b14 | 3594 | if (first_time) |
ad009ac9 | 3595 | cifs_calculate_mac_key( |
b609f06a | 3596 | &pSesInfo->server->mac_signing_key, |
ad009ac9 SF |
3597 | ntlm_session_key, |
3598 | pSesInfo->password); | |
1da177e4 LT |
3599 | } |
3600 | /* for better security the weaker lanman hash not sent | |
3601 | in AuthSessSetup so we no longer calculate it */ | |
3602 | ||
3603 | rc = CIFSNTLMSSPAuthSessSetup(xid, | |
3604 | pSesInfo, | |
3605 | ntlm_session_key, | |
3606 | ntlmv2_flag, | |
3607 | nls_info); | |
3608 | } | |
3609 | } else { /* old style NTLM 0.12 session setup */ | |
3610 | SMBNTencrypt(pSesInfo->password, | |
3611 | pSesInfo->server->cryptKey, | |
3612 | ntlm_session_key); | |
3613 | ||
fb8c4b14 | 3614 | if (first_time) |
ad009ac9 | 3615 | cifs_calculate_mac_key( |
b609f06a | 3616 | &pSesInfo->server->mac_signing_key, |
ad009ac9 SF |
3617 | ntlm_session_key, pSesInfo->password); |
3618 | ||
1da177e4 LT |
3619 | rc = CIFSSessSetup(xid, pSesInfo, |
3620 | ntlm_session_key, nls_info); | |
3621 | } | |
3622 | if (rc) { | |
fb8c4b14 | 3623 | cERROR(1, ("Send error in SessSetup = %d", rc)); |
1da177e4 | 3624 | } else { |
467a8f8d | 3625 | cFYI(1, ("CIFS Session Established successfully")); |
1da177e4 LT |
3626 | pSesInfo->status = CifsGood; |
3627 | } | |
3628 | } | |
3629 | ss_err_exit: | |
3630 | return rc; | |
3631 | } | |
3632 |