Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/connect.c | |
3 | * | |
366781c1 | 4 | * Copyright (C) International Business Machines Corp., 2002,2008 |
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 | ||
1da177e4 LT |
52 | extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, |
53 | unsigned char *p24); | |
54 | ||
55 | extern mempool_t *cifs_req_poolp; | |
56 | ||
57 | struct smb_vol { | |
58 | char *username; | |
59 | char *password; | |
60 | char *domainname; | |
61 | char *UNC; | |
62 | char *UNCip; | |
95b1cb90 | 63 | char *in6_addr; /* ipv6 address as human readable form of in6_addr */ |
1da177e4 LT |
64 | char *iocharset; /* local code page for mapping to and from Unicode */ |
65 | char source_rfc1001_name[16]; /* netbios name of client */ | |
a10faeb2 | 66 | char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */ |
1da177e4 LT |
67 | uid_t linux_uid; |
68 | gid_t linux_gid; | |
69 | mode_t file_mode; | |
70 | mode_t dir_mode; | |
189acaae | 71 | unsigned secFlg; |
4b18f2a9 SF |
72 | bool rw:1; |
73 | bool retry:1; | |
74 | bool intr:1; | |
75 | bool setuids:1; | |
76 | bool override_uid:1; | |
77 | bool override_gid:1; | |
d0a9c078 | 78 | bool dynperm:1; |
4b18f2a9 SF |
79 | bool noperm:1; |
80 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
81 | bool cifs_acl:1; | |
82 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ | |
83 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
84 | bool direct_io:1; | |
95b1cb90 SF |
85 | bool remap:1; /* set to remap seven reserved chars in filenames */ |
86 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ | |
4b18f2a9 SF |
87 | bool no_linux_ext:1; |
88 | bool sfu_emul:1; | |
95b1cb90 SF |
89 | bool nullauth:1; /* attempt to authenticate with null user */ |
90 | bool nocase:1; /* request case insensitive filenames */ | |
91 | bool nobrl:1; /* disable sending byte range locks to srv */ | |
92 | bool seal:1; /* request transport encryption on share */ | |
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); | |
ad8b15f0 | 154 | if ((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); | |
ad8b15f0 | 176 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { |
09d1db5c SF |
177 | /* Mark other intransit requests as needing |
178 | retry so we do not immediately mark the | |
179 | session bad again (ie after we reconnect | |
180 | below) as they timeout too */ | |
ad8b15f0 | 181 | mid_entry->midState = MID_RETRY_NEEDED; |
1da177e4 LT |
182 | } |
183 | } | |
184 | spin_unlock(&GlobalMid_Lock); | |
fb8c4b14 | 185 | up(&server->tcpSem); |
1da177e4 | 186 | |
26f57364 | 187 | while ((!kthread_should_stop()) && (server->tcpStatus != CifsGood)) { |
6c3d8909 | 188 | try_to_freeze(); |
fb8c4b14 SF |
189 | if (server->protocolType == IPV6) { |
190 | rc = ipv6_connect(&server->addr.sockAddr6, | |
191 | &server->ssocket); | |
1da177e4 | 192 | } else { |
fb8c4b14 | 193 | rc = ipv4_connect(&server->addr.sockAddr, |
1da177e4 | 194 | &server->ssocket, |
a10faeb2 SF |
195 | server->workstation_RFC1001_name, |
196 | server->server_RFC1001_name); | |
1da177e4 | 197 | } |
fb8c4b14 SF |
198 | if (rc) { |
199 | cFYI(1, ("reconnect error %d", rc)); | |
0cb766ae | 200 | msleep(3000); |
1da177e4 LT |
201 | } else { |
202 | atomic_inc(&tcpSesReconnectCount); | |
203 | spin_lock(&GlobalMid_Lock); | |
26f57364 | 204 | if (!kthread_should_stop()) |
1da177e4 | 205 | server->tcpStatus = CifsGood; |
ad009ac9 | 206 | server->sequence_number = 0; |
fb8c4b14 | 207 | spin_unlock(&GlobalMid_Lock); |
1da177e4 LT |
208 | /* atomic_set(&server->inFlight,0);*/ |
209 | wake_up(&server->response_q); | |
210 | } | |
211 | } | |
212 | return rc; | |
213 | } | |
214 | ||
fb8c4b14 | 215 | /* |
e4eb295d SF |
216 | return codes: |
217 | 0 not a transact2, or all data present | |
218 | >0 transact2 with that much data missing | |
219 | -EINVAL = invalid transact2 | |
220 | ||
221 | */ | |
fb8c4b14 | 222 | static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) |
e4eb295d | 223 | { |
fb8c4b14 SF |
224 | struct smb_t2_rsp *pSMBt; |
225 | int total_data_size; | |
e4eb295d SF |
226 | int data_in_this_rsp; |
227 | int remaining; | |
228 | ||
fb8c4b14 | 229 | if (pSMB->Command != SMB_COM_TRANSACTION2) |
e4eb295d SF |
230 | return 0; |
231 | ||
fb8c4b14 SF |
232 | /* check for plausible wct, bcc and t2 data and parm sizes */ |
233 | /* check for parm and data offset going beyond end of smb */ | |
234 | if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
467a8f8d | 235 | cFYI(1, ("invalid transact2 word count")); |
e4eb295d SF |
236 | return -EINVAL; |
237 | } | |
238 | ||
239 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
240 | ||
241 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
242 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
243 | ||
244 | remaining = total_data_size - data_in_this_rsp; | |
245 | ||
fb8c4b14 | 246 | if (remaining == 0) |
e4eb295d | 247 | return 0; |
fb8c4b14 | 248 | else if (remaining < 0) { |
467a8f8d | 249 | cFYI(1, ("total data %d smaller than data in frame %d", |
e4eb295d SF |
250 | total_data_size, data_in_this_rsp)); |
251 | return -EINVAL; | |
252 | } else { | |
467a8f8d | 253 | cFYI(1, ("missing %d bytes from transact2, check next response", |
e4eb295d | 254 | remaining)); |
fb8c4b14 SF |
255 | if (total_data_size > maxBufSize) { |
256 | cERROR(1, ("TotalDataSize %d is over maximum buffer %d", | |
257 | total_data_size, maxBufSize)); | |
258 | return -EINVAL; | |
e4eb295d SF |
259 | } |
260 | return remaining; | |
261 | } | |
262 | } | |
263 | ||
fb8c4b14 | 264 | static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) |
e4eb295d SF |
265 | { |
266 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
267 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
268 | int total_data_size; | |
269 | int total_in_buf; | |
270 | int remaining; | |
271 | int total_in_buf2; | |
fb8c4b14 SF |
272 | char *data_area_of_target; |
273 | char *data_area_of_buf2; | |
e4eb295d SF |
274 | __u16 byte_count; |
275 | ||
276 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
277 | ||
fb8c4b14 | 278 | if (total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { |
63135e08 | 279 | cFYI(1, ("total data size of primary and secondary t2 differ")); |
e4eb295d SF |
280 | } |
281 | ||
282 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
283 | ||
284 | remaining = total_data_size - total_in_buf; | |
50c2f753 | 285 | |
fb8c4b14 | 286 | if (remaining < 0) |
e4eb295d SF |
287 | return -EINVAL; |
288 | ||
fb8c4b14 | 289 | if (remaining == 0) /* nothing to do, ignore */ |
e4eb295d | 290 | return 0; |
50c2f753 | 291 | |
e4eb295d | 292 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); |
fb8c4b14 | 293 | if (remaining < total_in_buf2) { |
467a8f8d | 294 | cFYI(1, ("transact2 2nd response contains too much data")); |
e4eb295d SF |
295 | } |
296 | ||
297 | /* find end of first SMB data area */ | |
fb8c4b14 | 298 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + |
e4eb295d SF |
299 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); |
300 | /* validate target area */ | |
301 | ||
302 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
fb8c4b14 | 303 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); |
e4eb295d SF |
304 | |
305 | data_area_of_target += total_in_buf; | |
306 | ||
307 | /* copy second buffer into end of first buffer */ | |
fb8c4b14 | 308 | memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); |
e4eb295d SF |
309 | total_in_buf += total_in_buf2; |
310 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
311 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
312 | byte_count += total_in_buf2; | |
313 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
314 | ||
70ca734a | 315 | byte_count = pTargetSMB->smb_buf_length; |
e4eb295d SF |
316 | byte_count += total_in_buf2; |
317 | ||
318 | /* BB also add check that we are not beyond maximum buffer size */ | |
50c2f753 | 319 | |
70ca734a | 320 | pTargetSMB->smb_buf_length = byte_count; |
e4eb295d | 321 | |
fb8c4b14 | 322 | if (remaining == total_in_buf2) { |
467a8f8d | 323 | cFYI(1, ("found the last secondary response")); |
e4eb295d SF |
324 | return 0; /* we are done */ |
325 | } else /* more responses to go */ | |
326 | return 1; | |
327 | ||
328 | } | |
329 | ||
1da177e4 LT |
330 | static int |
331 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
332 | { | |
333 | int length; | |
334 | unsigned int pdu_length, total_read; | |
335 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
336 | struct smb_hdr *bigbuf = NULL; |
337 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
338 | struct msghdr smb_msg; |
339 | struct kvec iov; | |
340 | struct socket *csocket = server->ssocket; | |
341 | struct list_head *tmp; | |
342 | struct cifsSesInfo *ses; | |
343 | struct task_struct *task_to_wake = NULL; | |
344 | struct mid_q_entry *mid_entry; | |
70ca734a | 345 | char temp; |
4b18f2a9 SF |
346 | bool isLargeBuf = false; |
347 | bool isMultiRsp; | |
e4eb295d | 348 | int reconnect; |
1da177e4 | 349 | |
1da177e4 | 350 | current->flags |= PF_MEMALLOC; |
ba25f9dc | 351 | cFYI(1, ("Demultiplex PID: %d", task_pid_nr(current))); |
93d0ec85 JL |
352 | |
353 | length = atomic_inc_return(&tcpSesAllocCount); | |
354 | if (length > 1) | |
26f57364 SF |
355 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, |
356 | GFP_KERNEL); | |
1da177e4 | 357 | |
83144186 | 358 | set_freezable(); |
aaf737ad | 359 | while (!kthread_should_stop()) { |
ede1327e SF |
360 | if (try_to_freeze()) |
361 | continue; | |
b8643e1b SF |
362 | if (bigbuf == NULL) { |
363 | bigbuf = cifs_buf_get(); | |
0fd1ffe0 PM |
364 | if (!bigbuf) { |
365 | cERROR(1, ("No memory for large SMB response")); | |
b8643e1b SF |
366 | msleep(3000); |
367 | /* retry will check if exiting */ | |
368 | continue; | |
369 | } | |
0fd1ffe0 PM |
370 | } else if (isLargeBuf) { |
371 | /* we are reusing a dirty large buf, clear its start */ | |
26f57364 | 372 | memset(bigbuf, 0, sizeof(struct smb_hdr)); |
1da177e4 | 373 | } |
b8643e1b SF |
374 | |
375 | if (smallbuf == NULL) { | |
376 | smallbuf = cifs_small_buf_get(); | |
0fd1ffe0 PM |
377 | if (!smallbuf) { |
378 | cERROR(1, ("No memory for SMB response")); | |
b8643e1b SF |
379 | msleep(1000); |
380 | /* retry will check if exiting */ | |
381 | continue; | |
382 | } | |
383 | /* beginning of smb buffer is cleared in our buf_get */ | |
384 | } else /* if existing small buf clear beginning */ | |
26f57364 | 385 | memset(smallbuf, 0, sizeof(struct smb_hdr)); |
b8643e1b | 386 | |
4b18f2a9 SF |
387 | isLargeBuf = false; |
388 | isMultiRsp = false; | |
b8643e1b | 389 | smb_buffer = smallbuf; |
1da177e4 LT |
390 | iov.iov_base = smb_buffer; |
391 | iov.iov_len = 4; | |
392 | smb_msg.msg_control = NULL; | |
393 | smb_msg.msg_controllen = 0; | |
f01d5e14 SF |
394 | pdu_length = 4; /* enough to get RFC1001 header */ |
395 | incomplete_rcv: | |
1da177e4 LT |
396 | length = |
397 | kernel_recvmsg(csocket, &smb_msg, | |
f01d5e14 | 398 | &iov, 1, pdu_length, 0 /* BB other flags? */); |
1da177e4 | 399 | |
26f57364 | 400 | if (kthread_should_stop()) { |
1da177e4 LT |
401 | break; |
402 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
0fd1ffe0 | 403 | cFYI(1, ("Reconnect after server stopped responding")); |
1da177e4 | 404 | cifs_reconnect(server); |
0fd1ffe0 | 405 | cFYI(1, ("call to reconnect done")); |
1da177e4 LT |
406 | csocket = server->ssocket; |
407 | continue; | |
408 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 409 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
410 | allowing socket to clear and app threads to set |
411 | tcpStatus CifsNeedReconnect if server hung */ | |
c18c732e SF |
412 | if (pdu_length < 4) |
413 | goto incomplete_rcv; | |
414 | else | |
415 | continue; | |
1da177e4 | 416 | } else if (length <= 0) { |
0fd1ffe0 PM |
417 | if (server->tcpStatus == CifsNew) { |
418 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
419 | /* some servers kill the TCP session rather than |
420 | returning an SMB negprot error, in which | |
421 | case reconnecting here is not going to help, | |
422 | and so simply return error to mount */ | |
1da177e4 LT |
423 | break; |
424 | } | |
0fd1ffe0 | 425 | if (!try_to_freeze() && (length == -EINTR)) { |
467a8f8d | 426 | cFYI(1, ("cifsd thread killed")); |
1da177e4 LT |
427 | break; |
428 | } | |
467a8f8d | 429 | cFYI(1, ("Reconnect after unexpected peek error %d", |
57337e42 | 430 | length)); |
1da177e4 LT |
431 | cifs_reconnect(server); |
432 | csocket = server->ssocket; | |
433 | wake_up(&server->response_q); | |
434 | continue; | |
2a974680 PT |
435 | } else if (length < pdu_length) { |
436 | cFYI(1, ("requested %d bytes but only got %d bytes", | |
437 | pdu_length, length)); | |
f01d5e14 | 438 | pdu_length -= length; |
f01d5e14 SF |
439 | msleep(1); |
440 | goto incomplete_rcv; | |
46810cbf | 441 | } |
1da177e4 | 442 | |
70ca734a SF |
443 | /* The right amount was read from socket - 4 bytes */ |
444 | /* so we can now interpret the length field */ | |
46810cbf | 445 | |
70ca734a SF |
446 | /* the first byte big endian of the length field, |
447 | is actually not part of the length but the type | |
448 | with the most common, zero, as regular data */ | |
449 | temp = *((char *) smb_buffer); | |
46810cbf | 450 | |
fb8c4b14 | 451 | /* Note that FC 1001 length is big endian on the wire, |
70ca734a SF |
452 | but we convert it here so it is always manipulated |
453 | as host byte order */ | |
5ca33c6a | 454 | pdu_length = be32_to_cpu((__force __be32)smb_buffer->smb_buf_length); |
70ca734a SF |
455 | smb_buffer->smb_buf_length = pdu_length; |
456 | ||
467a8f8d | 457 | cFYI(1, ("rfc1002 length 0x%x", pdu_length+4)); |
46810cbf | 458 | |
70ca734a | 459 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
fb8c4b14 | 460 | continue; |
70ca734a | 461 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
467a8f8d | 462 | cFYI(1, ("Good RFC 1002 session rsp")); |
e4eb295d | 463 | continue; |
70ca734a | 464 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
fb8c4b14 | 465 | /* we get this from Windows 98 instead of |
46810cbf | 466 | an error on SMB negprot response */ |
fb8c4b14 | 467 | cFYI(1, ("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 468 | pdu_length)); |
fb8c4b14 SF |
469 | if (server->tcpStatus == CifsNew) { |
470 | /* if nack on negprot (rather than | |
46810cbf SF |
471 | ret of smb negprot error) reconnecting |
472 | not going to help, ret error to mount */ | |
473 | break; | |
474 | } else { | |
475 | /* give server a second to | |
476 | clean up before reconnect attempt */ | |
477 | msleep(1000); | |
478 | /* always try 445 first on reconnect | |
479 | since we get NACK on some if we ever | |
fb8c4b14 | 480 | connected to port 139 (the NACK is |
46810cbf SF |
481 | since we do not begin with RFC1001 |
482 | session initialize frame) */ | |
fb8c4b14 | 483 | server->addr.sockAddr.sin_port = |
46810cbf | 484 | htons(CIFS_PORT); |
1da177e4 LT |
485 | cifs_reconnect(server); |
486 | csocket = server->ssocket; | |
46810cbf | 487 | wake_up(&server->response_q); |
1da177e4 | 488 | continue; |
46810cbf | 489 | } |
70ca734a | 490 | } else if (temp != (char) 0) { |
fb8c4b14 | 491 | cERROR(1, ("Unknown RFC 1002 frame")); |
70ca734a SF |
492 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
493 | length); | |
46810cbf SF |
494 | cifs_reconnect(server); |
495 | csocket = server->ssocket; | |
496 | continue; | |
e4eb295d SF |
497 | } |
498 | ||
499 | /* else we have an SMB response */ | |
fb8c4b14 | 500 | if ((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || |
26f57364 | 501 | (pdu_length < sizeof(struct smb_hdr) - 1 - 4)) { |
e4eb295d | 502 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 503 | length, pdu_length+4)); |
e4eb295d SF |
504 | cifs_reconnect(server); |
505 | csocket = server->ssocket; | |
506 | wake_up(&server->response_q); | |
507 | continue; | |
fb8c4b14 | 508 | } |
e4eb295d SF |
509 | |
510 | /* else length ok */ | |
511 | reconnect = 0; | |
512 | ||
fb8c4b14 | 513 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
4b18f2a9 | 514 | isLargeBuf = true; |
e4eb295d SF |
515 | memcpy(bigbuf, smallbuf, 4); |
516 | smb_buffer = bigbuf; | |
517 | } | |
518 | length = 0; | |
519 | iov.iov_base = 4 + (char *)smb_buffer; | |
520 | iov.iov_len = pdu_length; | |
fb8c4b14 | 521 | for (total_read = 0; total_read < pdu_length; |
e4eb295d SF |
522 | total_read += length) { |
523 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
524 | pdu_length - total_read, 0); | |
26f57364 | 525 | if (kthread_should_stop() || |
e4eb295d SF |
526 | (length == -EINTR)) { |
527 | /* then will exit */ | |
528 | reconnect = 2; | |
529 | break; | |
530 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
531 | cifs_reconnect(server); |
532 | csocket = server->ssocket; | |
fb8c4b14 | 533 | /* Reconnect wakes up rspns q */ |
e4eb295d SF |
534 | /* Now we will reread sock */ |
535 | reconnect = 1; | |
536 | break; | |
fb8c4b14 | 537 | } else if ((length == -ERESTARTSYS) || |
e4eb295d SF |
538 | (length == -EAGAIN)) { |
539 | msleep(1); /* minimum sleep to prevent looping, | |
fb8c4b14 | 540 | allowing socket to clear and app |
e4eb295d SF |
541 | threads to set tcpStatus |
542 | CifsNeedReconnect if server hung*/ | |
c18c732e | 543 | length = 0; |
46810cbf | 544 | continue; |
e4eb295d | 545 | } else if (length <= 0) { |
fb8c4b14 | 546 | cERROR(1, ("Received no data, expecting %d", |
e4eb295d SF |
547 | pdu_length - total_read)); |
548 | cifs_reconnect(server); | |
549 | csocket = server->ssocket; | |
550 | reconnect = 1; | |
551 | break; | |
46810cbf | 552 | } |
e4eb295d | 553 | } |
fb8c4b14 | 554 | if (reconnect == 2) |
e4eb295d | 555 | break; |
fb8c4b14 | 556 | else if (reconnect == 1) |
e4eb295d | 557 | continue; |
1da177e4 | 558 | |
e4eb295d | 559 | length += 4; /* account for rfc1002 hdr */ |
50c2f753 | 560 | |
09d1db5c | 561 | |
e4eb295d | 562 | dump_smb(smb_buffer, length); |
184ed211 | 563 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 564 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
565 | continue; |
566 | } | |
1da177e4 | 567 | |
e4eb295d SF |
568 | |
569 | task_to_wake = NULL; | |
570 | spin_lock(&GlobalMid_Lock); | |
571 | list_for_each(tmp, &server->pending_mid_q) { | |
572 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
573 | ||
50c2f753 | 574 | if ((mid_entry->mid == smb_buffer->Mid) && |
e4eb295d SF |
575 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && |
576 | (mid_entry->command == smb_buffer->Command)) { | |
fb8c4b14 | 577 | if (check2ndT2(smb_buffer,server->maxBuf) > 0) { |
e4eb295d | 578 | /* We have a multipart transact2 resp */ |
4b18f2a9 | 579 | isMultiRsp = true; |
fb8c4b14 | 580 | if (mid_entry->resp_buf) { |
e4eb295d | 581 | /* merge response - fix up 1st*/ |
50c2f753 | 582 | if (coalesce_t2(smb_buffer, |
e4eb295d | 583 | mid_entry->resp_buf)) { |
4b18f2a9 SF |
584 | mid_entry->multiRsp = |
585 | true; | |
e4eb295d SF |
586 | break; |
587 | } else { | |
588 | /* all parts received */ | |
4b18f2a9 SF |
589 | mid_entry->multiEnd = |
590 | true; | |
50c2f753 | 591 | goto multi_t2_fnd; |
e4eb295d SF |
592 | } |
593 | } else { | |
fb8c4b14 | 594 | if (!isLargeBuf) { |
e4eb295d SF |
595 | cERROR(1,("1st trans2 resp needs bigbuf")); |
596 | /* BB maybe we can fix this up, switch | |
50c2f753 | 597 | to already allocated large buffer? */ |
e4eb295d | 598 | } else { |
cd63499c | 599 | /* Have first buffer */ |
e4eb295d SF |
600 | mid_entry->resp_buf = |
601 | smb_buffer; | |
4b18f2a9 SF |
602 | mid_entry->largeBuf = |
603 | true; | |
e4eb295d SF |
604 | bigbuf = NULL; |
605 | } | |
606 | } | |
607 | break; | |
50c2f753 | 608 | } |
e4eb295d | 609 | mid_entry->resp_buf = smb_buffer; |
4b18f2a9 | 610 | mid_entry->largeBuf = isLargeBuf; |
e4eb295d SF |
611 | multi_t2_fnd: |
612 | task_to_wake = mid_entry->tsk; | |
613 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
614 | #ifdef CONFIG_CIFS_STATS2 |
615 | mid_entry->when_received = jiffies; | |
616 | #endif | |
3a5ff61c SF |
617 | /* so we do not time out requests to server |
618 | which is still responding (since server could | |
619 | be busy but not dead) */ | |
620 | server->lstrp = jiffies; | |
e4eb295d | 621 | break; |
46810cbf | 622 | } |
1da177e4 | 623 | } |
e4eb295d SF |
624 | spin_unlock(&GlobalMid_Lock); |
625 | if (task_to_wake) { | |
cd63499c | 626 | /* Was previous buf put in mpx struct for multi-rsp? */ |
fb8c4b14 | 627 | if (!isMultiRsp) { |
cd63499c | 628 | /* smb buffer will be freed by user thread */ |
26f57364 | 629 | if (isLargeBuf) |
cd63499c | 630 | bigbuf = NULL; |
26f57364 | 631 | else |
cd63499c SF |
632 | smallbuf = NULL; |
633 | } | |
e4eb295d | 634 | wake_up_process(task_to_wake); |
4b18f2a9 SF |
635 | } else if (!is_valid_oplock_break(smb_buffer, server) && |
636 | !isMultiRsp) { | |
50c2f753 SF |
637 | cERROR(1, ("No task to wake, unknown frame received! " |
638 | "NumMids %d", midCount.counter)); | |
639 | cifs_dump_mem("Received Data is: ", (char *)smb_buffer, | |
70ca734a | 640 | sizeof(struct smb_hdr)); |
3979877e SF |
641 | #ifdef CONFIG_CIFS_DEBUG2 |
642 | cifs_dump_detail(smb_buffer); | |
643 | cifs_dump_mids(server); | |
644 | #endif /* CIFS_DEBUG2 */ | |
50c2f753 | 645 | |
e4eb295d SF |
646 | } |
647 | } /* end while !EXITING */ | |
648 | ||
1da177e4 LT |
649 | spin_lock(&GlobalMid_Lock); |
650 | server->tcpStatus = CifsExiting; | |
e691b9d1 | 651 | spin_unlock(&GlobalMid_Lock); |
dbdbb876 | 652 | wake_up_all(&server->response_q); |
e691b9d1 SF |
653 | |
654 | /* don't exit until kthread_stop is called */ | |
655 | set_current_state(TASK_UNINTERRUPTIBLE); | |
656 | while (!kthread_should_stop()) { | |
657 | schedule(); | |
658 | set_current_state(TASK_UNINTERRUPTIBLE); | |
659 | } | |
660 | set_current_state(TASK_RUNNING); | |
661 | ||
31ca3bc3 SF |
662 | /* check if we have blocked requests that need to free */ |
663 | /* Note that cifs_max_pending is normally 50, but | |
664 | can be set at module install time to as little as two */ | |
e691b9d1 | 665 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 | 666 | if (atomic_read(&server->inFlight) >= cifs_max_pending) |
31ca3bc3 SF |
667 | atomic_set(&server->inFlight, cifs_max_pending - 1); |
668 | /* We do not want to set the max_pending too low or we | |
669 | could end up with the counter going negative */ | |
1da177e4 | 670 | spin_unlock(&GlobalMid_Lock); |
50c2f753 | 671 | /* Although there should not be any requests blocked on |
1da177e4 | 672 | this queue it can not hurt to be paranoid and try to wake up requests |
09d1db5c | 673 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
674 | to the same server - they now will see the session is in exit state |
675 | and get out of SendReceive. */ | |
676 | wake_up_all(&server->request_q); | |
677 | /* give those requests time to exit */ | |
b8643e1b | 678 | msleep(125); |
50c2f753 | 679 | |
fb8c4b14 | 680 | if (server->ssocket) { |
1da177e4 LT |
681 | sock_release(csocket); |
682 | server->ssocket = NULL; | |
683 | } | |
b8643e1b | 684 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
a8a11d39 MK |
685 | cifs_buf_release(bigbuf); |
686 | if (smallbuf) /* no sense logging a debug message if NULL */ | |
b8643e1b | 687 | cifs_small_buf_release(smallbuf); |
1da177e4 LT |
688 | |
689 | read_lock(&GlobalSMBSeslock); | |
690 | if (list_empty(&server->pending_mid_q)) { | |
09d1db5c SF |
691 | /* loop through server session structures attached to this and |
692 | mark them dead */ | |
1da177e4 LT |
693 | list_for_each(tmp, &GlobalSMBSessionList) { |
694 | ses = | |
695 | list_entry(tmp, struct cifsSesInfo, | |
696 | cifsSessionList); | |
697 | if (ses->server == server) { | |
698 | ses->status = CifsExiting; | |
699 | ses->server = NULL; | |
700 | } | |
701 | } | |
702 | read_unlock(&GlobalSMBSeslock); | |
703 | } else { | |
31ca3bc3 SF |
704 | /* although we can not zero the server struct pointer yet, |
705 | since there are active requests which may depnd on them, | |
706 | mark the corresponding SMB sessions as exiting too */ | |
707 | list_for_each(tmp, &GlobalSMBSessionList) { | |
708 | ses = list_entry(tmp, struct cifsSesInfo, | |
709 | cifsSessionList); | |
26f57364 | 710 | if (ses->server == server) |
31ca3bc3 | 711 | ses->status = CifsExiting; |
31ca3bc3 SF |
712 | } |
713 | ||
1da177e4 LT |
714 | spin_lock(&GlobalMid_Lock); |
715 | list_for_each(tmp, &server->pending_mid_q) { | |
716 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
717 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
50c2f753 SF |
718 | cFYI(1, ("Clearing Mid 0x%x - waking up ", |
719 | mid_entry->mid)); | |
1da177e4 | 720 | task_to_wake = mid_entry->tsk; |
26f57364 | 721 | if (task_to_wake) |
1da177e4 | 722 | wake_up_process(task_to_wake); |
1da177e4 LT |
723 | } |
724 | } | |
725 | spin_unlock(&GlobalMid_Lock); | |
726 | read_unlock(&GlobalSMBSeslock); | |
1da177e4 | 727 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 728 | msleep(125); |
1da177e4 LT |
729 | } |
730 | ||
f191401f | 731 | if (!list_empty(&server->pending_mid_q)) { |
50c2f753 | 732 | /* mpx threads have not exited yet give them |
1da177e4 | 733 | at least the smb send timeout time for long ops */ |
31ca3bc3 SF |
734 | /* due to delays on oplock break requests, we need |
735 | to wait at least 45 seconds before giving up | |
736 | on a request getting a response and going ahead | |
737 | and killing cifsd */ | |
1da177e4 | 738 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 739 | msleep(46000); |
1da177e4 LT |
740 | /* if threads still have not exited they are probably never |
741 | coming home not much else we can do but free the memory */ | |
742 | } | |
1da177e4 | 743 | |
31ca3bc3 SF |
744 | /* last chance to mark ses pointers invalid |
745 | if there are any pointing to this (e.g | |
50c2f753 | 746 | if a crazy root user tried to kill cifsd |
31ca3bc3 | 747 | kernel thread explicitly this might happen) */ |
93d0ec85 | 748 | write_lock(&GlobalSMBSeslock); |
31ca3bc3 SF |
749 | list_for_each(tmp, &GlobalSMBSessionList) { |
750 | ses = list_entry(tmp, struct cifsSesInfo, | |
751 | cifsSessionList); | |
26f57364 | 752 | if (ses->server == server) |
31ca3bc3 | 753 | ses->server = NULL; |
31ca3bc3 | 754 | } |
1da177e4 | 755 | write_unlock(&GlobalSMBSeslock); |
31ca3bc3 | 756 | |
c359cf3c | 757 | kfree(server->hostname); |
31ca3bc3 | 758 | kfree(server); |
93d0ec85 JL |
759 | |
760 | length = atomic_dec_return(&tcpSesAllocCount); | |
26f57364 SF |
761 | if (length > 0) |
762 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, | |
763 | GFP_KERNEL); | |
50c2f753 | 764 | |
1da177e4 LT |
765 | return 0; |
766 | } | |
767 | ||
c359cf3c JL |
768 | /* extract the host portion of the UNC string */ |
769 | static char * | |
770 | extract_hostname(const char *unc) | |
771 | { | |
772 | const char *src; | |
773 | char *dst, *delim; | |
774 | unsigned int len; | |
775 | ||
776 | /* skip double chars at beginning of string */ | |
777 | /* BB: check validity of these bytes? */ | |
778 | src = unc + 2; | |
779 | ||
780 | /* delimiter between hostname and sharename is always '\\' now */ | |
781 | delim = strchr(src, '\\'); | |
782 | if (!delim) | |
783 | return ERR_PTR(-EINVAL); | |
784 | ||
785 | len = delim - src; | |
786 | dst = kmalloc((len + 1), GFP_KERNEL); | |
787 | if (dst == NULL) | |
788 | return ERR_PTR(-ENOMEM); | |
789 | ||
790 | memcpy(dst, src, len); | |
791 | dst[len] = '\0'; | |
792 | ||
793 | return dst; | |
794 | } | |
795 | ||
1da177e4 | 796 | static int |
50c2f753 SF |
797 | cifs_parse_mount_options(char *options, const char *devname, |
798 | struct smb_vol *vol) | |
1da177e4 LT |
799 | { |
800 | char *value; | |
801 | char *data; | |
802 | unsigned int temp_len, i, j; | |
803 | char separator[2]; | |
804 | ||
805 | separator[0] = ','; | |
50c2f753 | 806 | separator[1] = 0; |
1da177e4 | 807 | |
12e36b2f | 808 | if (Local_System_Name[0] != 0) |
50c2f753 | 809 | memcpy(vol->source_rfc1001_name, Local_System_Name, 15); |
2cd646a2 | 810 | else { |
12e36b2f | 811 | char *nodename = utsname()->nodename; |
50c2f753 SF |
812 | int n = strnlen(nodename, 15); |
813 | memset(vol->source_rfc1001_name, 0x20, 15); | |
814 | for (i = 0; i < n; i++) { | |
2cd646a2 SF |
815 | /* does not have to be perfect mapping since field is |
816 | informational, only used for servers that do not support | |
817 | port 445 and it can be overridden at mount time */ | |
12e36b2f | 818 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
2cd646a2 | 819 | } |
1da177e4 LT |
820 | } |
821 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
822 | /* null target name indicates to use *SMBSERVR default called name |
823 | if we end up sending RFC1001 session initialize */ | |
824 | vol->target_rfc1001_name[0] = 0; | |
1da177e4 LT |
825 | vol->linux_uid = current->uid; /* current->euid instead? */ |
826 | vol->linux_gid = current->gid; | |
827 | vol->dir_mode = S_IRWXUGO; | |
828 | /* 2767 perms indicate mandatory locking support */ | |
7505e052 | 829 | vol->file_mode = (S_IRWXUGO | S_ISGID) & (~S_IXGRP); |
1da177e4 LT |
830 | |
831 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
4b18f2a9 | 832 | vol->rw = true; |
ac67055e JA |
833 | /* default is always to request posix paths. */ |
834 | vol->posix_paths = 1; | |
835 | ||
1da177e4 LT |
836 | if (!options) |
837 | return 1; | |
838 | ||
50c2f753 | 839 | if (strncmp(options, "sep=", 4) == 0) { |
fb8c4b14 | 840 | if (options[4] != 0) { |
1da177e4 LT |
841 | separator[0] = options[4]; |
842 | options += 5; | |
843 | } else { | |
467a8f8d | 844 | cFYI(1, ("Null separator not allowed")); |
1da177e4 LT |
845 | } |
846 | } | |
50c2f753 | 847 | |
1da177e4 LT |
848 | while ((data = strsep(&options, separator)) != NULL) { |
849 | if (!*data) | |
850 | continue; | |
851 | if ((value = strchr(data, '=')) != NULL) | |
852 | *value++ = '\0'; | |
853 | ||
50c2f753 SF |
854 | /* Have to parse this before we parse for "user" */ |
855 | if (strnicmp(data, "user_xattr", 10) == 0) { | |
1da177e4 | 856 | vol->no_xattr = 0; |
50c2f753 | 857 | } else if (strnicmp(data, "nouser_xattr", 12) == 0) { |
1da177e4 LT |
858 | vol->no_xattr = 1; |
859 | } else if (strnicmp(data, "user", 4) == 0) { | |
4b952a9b | 860 | if (!value) { |
1da177e4 LT |
861 | printk(KERN_WARNING |
862 | "CIFS: invalid or missing username\n"); | |
863 | return 1; /* needs_arg; */ | |
fb8c4b14 | 864 | } else if (!*value) { |
4b952a9b SF |
865 | /* null user, ie anonymous, authentication */ |
866 | vol->nullauth = 1; | |
1da177e4 LT |
867 | } |
868 | if (strnlen(value, 200) < 200) { | |
869 | vol->username = value; | |
870 | } else { | |
871 | printk(KERN_WARNING "CIFS: username too long\n"); | |
872 | return 1; | |
873 | } | |
874 | } else if (strnicmp(data, "pass", 4) == 0) { | |
875 | if (!value) { | |
876 | vol->password = NULL; | |
877 | continue; | |
fb8c4b14 | 878 | } else if (value[0] == 0) { |
1da177e4 LT |
879 | /* check if string begins with double comma |
880 | since that would mean the password really | |
881 | does start with a comma, and would not | |
882 | indicate an empty string */ | |
fb8c4b14 | 883 | if (value[1] != separator[0]) { |
1da177e4 LT |
884 | vol->password = NULL; |
885 | continue; | |
886 | } | |
887 | } | |
888 | temp_len = strlen(value); | |
889 | /* removed password length check, NTLM passwords | |
890 | can be arbitrarily long */ | |
891 | ||
50c2f753 | 892 | /* if comma in password, the string will be |
1da177e4 LT |
893 | prematurely null terminated. Commas in password are |
894 | specified across the cifs mount interface by a double | |
895 | comma ie ,, and a comma used as in other cases ie ',' | |
896 | as a parameter delimiter/separator is single and due | |
897 | to the strsep above is temporarily zeroed. */ | |
898 | ||
899 | /* NB: password legally can have multiple commas and | |
900 | the only illegal character in a password is null */ | |
901 | ||
50c2f753 | 902 | if ((value[temp_len] == 0) && |
09d1db5c | 903 | (value[temp_len+1] == separator[0])) { |
1da177e4 LT |
904 | /* reinsert comma */ |
905 | value[temp_len] = separator[0]; | |
50c2f753 SF |
906 | temp_len += 2; /* move after second comma */ |
907 | while (value[temp_len] != 0) { | |
1da177e4 | 908 | if (value[temp_len] == separator[0]) { |
50c2f753 | 909 | if (value[temp_len+1] == |
09d1db5c SF |
910 | separator[0]) { |
911 | /* skip second comma */ | |
912 | temp_len++; | |
50c2f753 | 913 | } else { |
1da177e4 LT |
914 | /* single comma indicating start |
915 | of next parm */ | |
916 | break; | |
917 | } | |
918 | } | |
919 | temp_len++; | |
920 | } | |
fb8c4b14 | 921 | if (value[temp_len] == 0) { |
1da177e4 LT |
922 | options = NULL; |
923 | } else { | |
924 | value[temp_len] = 0; | |
925 | /* point option to start of next parm */ | |
926 | options = value + temp_len + 1; | |
927 | } | |
50c2f753 | 928 | /* go from value to value + temp_len condensing |
1da177e4 LT |
929 | double commas to singles. Note that this ends up |
930 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 931 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
fb8c4b14 | 932 | if (vol->password == NULL) { |
50c2f753 SF |
933 | printk(KERN_WARNING "CIFS: no memory " |
934 | "for password\n"); | |
433dc24f SF |
935 | return 1; |
936 | } | |
50c2f753 | 937 | for (i = 0, j = 0; i < temp_len; i++, j++) { |
1da177e4 | 938 | vol->password[j] = value[i]; |
fb8c4b14 | 939 | if (value[i] == separator[0] |
09d1db5c | 940 | && value[i+1] == separator[0]) { |
1da177e4 LT |
941 | /* skip second comma */ |
942 | i++; | |
943 | } | |
944 | } | |
945 | vol->password[j] = 0; | |
946 | } else { | |
e915fc49 | 947 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
fb8c4b14 | 948 | if (vol->password == NULL) { |
50c2f753 SF |
949 | printk(KERN_WARNING "CIFS: no memory " |
950 | "for password\n"); | |
433dc24f SF |
951 | return 1; |
952 | } | |
1da177e4 LT |
953 | strcpy(vol->password, value); |
954 | } | |
955 | } else if (strnicmp(data, "ip", 2) == 0) { | |
956 | if (!value || !*value) { | |
957 | vol->UNCip = NULL; | |
958 | } else if (strnlen(value, 35) < 35) { | |
959 | vol->UNCip = value; | |
960 | } else { | |
50c2f753 SF |
961 | printk(KERN_WARNING "CIFS: ip address " |
962 | "too long\n"); | |
1da177e4 LT |
963 | return 1; |
964 | } | |
50c2f753 SF |
965 | } else if (strnicmp(data, "sec", 3) == 0) { |
966 | if (!value || !*value) { | |
967 | cERROR(1, ("no security value specified")); | |
968 | continue; | |
969 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
970 | vol->secFlg |= CIFSSEC_MAY_KRB5 | | |
189acaae | 971 | CIFSSEC_MUST_SIGN; |
bf820679 | 972 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
50c2f753 SF |
973 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
974 | CIFSSEC_MAY_KRB5; */ | |
975 | cERROR(1, ("Krb5 cifs privacy not supported")); | |
bf820679 SF |
976 | return 1; |
977 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 978 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
bf820679 | 979 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 980 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 981 | CIFSSEC_MUST_SIGN; |
bf820679 | 982 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 983 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 984 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 985 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 986 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
987 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
988 | /* ntlm is default so can be turned off too */ | |
750d1151 | 989 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 990 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 991 | /* BB is there a better way to do this? */ |
750d1151 | 992 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
993 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
994 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
50c2f753 | 995 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 996 | #endif |
bf820679 | 997 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 998 | vol->nullauth = 1; |
50c2f753 SF |
999 | } else { |
1000 | cERROR(1, ("bad security option: %s", value)); | |
1001 | return 1; | |
1002 | } | |
1da177e4 LT |
1003 | } else if ((strnicmp(data, "unc", 3) == 0) |
1004 | || (strnicmp(data, "target", 6) == 0) | |
1005 | || (strnicmp(data, "path", 4) == 0)) { | |
1006 | if (!value || !*value) { | |
50c2f753 SF |
1007 | printk(KERN_WARNING "CIFS: invalid path to " |
1008 | "network resource\n"); | |
1da177e4 LT |
1009 | return 1; /* needs_arg; */ |
1010 | } | |
1011 | if ((temp_len = strnlen(value, 300)) < 300) { | |
50c2f753 | 1012 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1013 | if (vol->UNC == NULL) |
1da177e4 | 1014 | return 1; |
50c2f753 | 1015 | strcpy(vol->UNC, value); |
1da177e4 LT |
1016 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1017 | vol->UNC[0] = '\\'; | |
1018 | vol->UNC[1] = '\\'; | |
50c2f753 | 1019 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
1da177e4 | 1020 | printk(KERN_WARNING |
50c2f753 SF |
1021 | "CIFS: UNC Path does not begin " |
1022 | "with // or \\\\ \n"); | |
1da177e4 LT |
1023 | return 1; |
1024 | } | |
1025 | } else { | |
1026 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1027 | return 1; | |
1028 | } | |
1029 | } else if ((strnicmp(data, "domain", 3) == 0) | |
1030 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
1031 | if (!value || !*value) { | |
1032 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
1033 | return 1; /* needs_arg; */ | |
1034 | } | |
1035 | /* BB are there cases in which a comma can be valid in | |
1036 | a domain name and need special handling? */ | |
3979877e | 1037 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
1038 | vol->domainname = value; |
1039 | cFYI(1, ("Domain name set")); | |
1040 | } else { | |
50c2f753 SF |
1041 | printk(KERN_WARNING "CIFS: domain name too " |
1042 | "long\n"); | |
1da177e4 LT |
1043 | return 1; |
1044 | } | |
50c2f753 SF |
1045 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
1046 | if (!value || !*value) { | |
1047 | printk(KERN_WARNING | |
1048 | "CIFS: invalid path prefix\n"); | |
1049 | return 1; /* needs_argument */ | |
1050 | } | |
1051 | if ((temp_len = strnlen(value, 1024)) < 1024) { | |
4523cc30 | 1052 | if (value[0] != '/') |
2fe87f02 | 1053 | temp_len++; /* missing leading slash */ |
50c2f753 SF |
1054 | vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); |
1055 | if (vol->prepath == NULL) | |
1056 | return 1; | |
4523cc30 | 1057 | if (value[0] != '/') { |
2fe87f02 | 1058 | vol->prepath[0] = '/'; |
50c2f753 | 1059 | strcpy(vol->prepath+1, value); |
2fe87f02 | 1060 | } else |
50c2f753 SF |
1061 | strcpy(vol->prepath, value); |
1062 | cFYI(1, ("prefix path %s", vol->prepath)); | |
1063 | } else { | |
1064 | printk(KERN_WARNING "CIFS: prefix too long\n"); | |
1065 | return 1; | |
1066 | } | |
1da177e4 LT |
1067 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
1068 | if (!value || !*value) { | |
63135e08 SF |
1069 | printk(KERN_WARNING "CIFS: invalid iocharset " |
1070 | "specified\n"); | |
1da177e4 LT |
1071 | return 1; /* needs_arg; */ |
1072 | } | |
1073 | if (strnlen(value, 65) < 65) { | |
50c2f753 | 1074 | if (strnicmp(value, "default", 7)) |
1da177e4 | 1075 | vol->iocharset = value; |
50c2f753 SF |
1076 | /* if iocharset not set then load_nls_default |
1077 | is used by caller */ | |
1078 | cFYI(1, ("iocharset set to %s", value)); | |
1da177e4 | 1079 | } else { |
63135e08 SF |
1080 | printk(KERN_WARNING "CIFS: iocharset name " |
1081 | "too long.\n"); | |
1da177e4 LT |
1082 | return 1; |
1083 | } | |
1084 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1085 | if (value && *value) { | |
1086 | vol->linux_uid = | |
1087 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1088 | vol->override_uid = 1; |
1da177e4 LT |
1089 | } |
1090 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1091 | if (value && *value) { | |
1092 | vol->linux_gid = | |
1093 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1094 | vol->override_gid = 1; |
1da177e4 LT |
1095 | } |
1096 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1097 | if (value && *value) { | |
1098 | vol->file_mode = | |
1099 | simple_strtoul(value, &value, 0); | |
1100 | } | |
1101 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1102 | if (value && *value) { | |
1103 | vol->dir_mode = | |
1104 | simple_strtoul(value, &value, 0); | |
1105 | } | |
1106 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1107 | if (value && *value) { | |
1108 | vol->dir_mode = | |
1109 | simple_strtoul(value, &value, 0); | |
1110 | } | |
1111 | } else if (strnicmp(data, "port", 4) == 0) { | |
1112 | if (value && *value) { | |
1113 | vol->port = | |
1114 | simple_strtoul(value, &value, 0); | |
1115 | } | |
1116 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1117 | if (value && *value) { | |
1118 | vol->rsize = | |
1119 | simple_strtoul(value, &value, 0); | |
1120 | } | |
1121 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1122 | if (value && *value) { | |
1123 | vol->wsize = | |
1124 | simple_strtoul(value, &value, 0); | |
1125 | } | |
1126 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1127 | if (value && *value) { | |
1128 | vol->sockopt = | |
1129 | simple_strtoul(value, &value, 0); | |
1130 | } | |
1131 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1132 | if (!value || !*value || (*value == ' ')) { | |
63135e08 | 1133 | cFYI(1, ("invalid (empty) netbiosname")); |
1da177e4 | 1134 | } else { |
50c2f753 SF |
1135 | memset(vol->source_rfc1001_name, 0x20, 15); |
1136 | for (i = 0; i < 15; i++) { | |
1137 | /* BB are there cases in which a comma can be | |
1da177e4 LT |
1138 | valid in this workstation netbios name (and need |
1139 | special handling)? */ | |
1140 | ||
1141 | /* We do not uppercase netbiosname for user */ | |
50c2f753 | 1142 | if (value[i] == 0) |
1da177e4 | 1143 | break; |
50c2f753 SF |
1144 | else |
1145 | vol->source_rfc1001_name[i] = | |
1146 | value[i]; | |
1da177e4 LT |
1147 | } |
1148 | /* The string has 16th byte zero still from | |
1149 | set at top of the function */ | |
50c2f753 SF |
1150 | if ((i == 15) && (value[i] != 0)) |
1151 | printk(KERN_WARNING "CIFS: netbiosname" | |
1152 | " longer than 15 truncated.\n"); | |
a10faeb2 SF |
1153 | } |
1154 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1155 | /* servernetbiosname specified override *SMBSERVER */ | |
1156 | if (!value || !*value || (*value == ' ')) { | |
467a8f8d | 1157 | cFYI(1, ("empty server netbiosname specified")); |
a10faeb2 SF |
1158 | } else { |
1159 | /* last byte, type, is 0x20 for servr type */ | |
50c2f753 | 1160 | memset(vol->target_rfc1001_name, 0x20, 16); |
a10faeb2 | 1161 | |
50c2f753 | 1162 | for (i = 0; i < 15; i++) { |
a10faeb2 | 1163 | /* BB are there cases in which a comma can be |
50c2f753 SF |
1164 | valid in this workstation netbios name |
1165 | (and need special handling)? */ | |
a10faeb2 | 1166 | |
50c2f753 SF |
1167 | /* user or mount helper must uppercase |
1168 | the netbiosname */ | |
1169 | if (value[i] == 0) | |
a10faeb2 SF |
1170 | break; |
1171 | else | |
50c2f753 SF |
1172 | vol->target_rfc1001_name[i] = |
1173 | value[i]; | |
a10faeb2 SF |
1174 | } |
1175 | /* The string has 16th byte zero still from | |
1176 | set at top of the function */ | |
50c2f753 SF |
1177 | if ((i == 15) && (value[i] != 0)) |
1178 | printk(KERN_WARNING "CIFS: server net" | |
1179 | "biosname longer than 15 truncated.\n"); | |
1da177e4 LT |
1180 | } |
1181 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1182 | /* ignore */ | |
1183 | } else if (strnicmp(data, "version", 3) == 0) { | |
1184 | /* ignore */ | |
50c2f753 | 1185 | } else if (strnicmp(data, "guest", 5) == 0) { |
1da177e4 LT |
1186 | /* ignore */ |
1187 | } else if (strnicmp(data, "rw", 2) == 0) { | |
4b18f2a9 | 1188 | vol->rw = true; |
1da177e4 LT |
1189 | } else if ((strnicmp(data, "suid", 4) == 0) || |
1190 | (strnicmp(data, "nosuid", 6) == 0) || | |
1191 | (strnicmp(data, "exec", 4) == 0) || | |
1192 | (strnicmp(data, "noexec", 6) == 0) || | |
1193 | (strnicmp(data, "nodev", 5) == 0) || | |
1194 | (strnicmp(data, "noauto", 6) == 0) || | |
1195 | (strnicmp(data, "dev", 3) == 0)) { | |
1196 | /* The mount tool or mount.cifs helper (if present) | |
50c2f753 SF |
1197 | uses these opts to set flags, and the flags are read |
1198 | by the kernel vfs layer before we get here (ie | |
1199 | before read super) so there is no point trying to | |
1200 | parse these options again and set anything and it | |
1201 | is ok to just ignore them */ | |
1da177e4 LT |
1202 | continue; |
1203 | } else if (strnicmp(data, "ro", 2) == 0) { | |
4b18f2a9 | 1204 | vol->rw = false; |
1da177e4 LT |
1205 | } else if (strnicmp(data, "hard", 4) == 0) { |
1206 | vol->retry = 1; | |
1207 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1208 | vol->retry = 0; | |
1209 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1210 | vol->noperm = 0; | |
1211 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1212 | vol->noperm = 1; | |
6a0b4824 SF |
1213 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1214 | vol->remap = 1; | |
1215 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1216 | vol->remap = 0; | |
50c2f753 SF |
1217 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1218 | vol->sfu_emul = 1; | |
1219 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1220 | vol->sfu_emul = 0; | |
ac67055e JA |
1221 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1222 | vol->posix_paths = 1; | |
1223 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1224 | vol->posix_paths = 0; | |
c18c842b SF |
1225 | } else if (strnicmp(data, "nounix", 6) == 0) { |
1226 | vol->no_linux_ext = 1; | |
1227 | } else if (strnicmp(data, "nolinux", 7) == 0) { | |
1228 | vol->no_linux_ext = 1; | |
50c2f753 | 1229 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
a10faeb2 | 1230 | (strnicmp(data, "ignorecase", 10) == 0)) { |
50c2f753 | 1231 | vol->nocase = 1; |
c46fa8ac SF |
1232 | } else if (strnicmp(data, "brl", 3) == 0) { |
1233 | vol->nobrl = 0; | |
50c2f753 | 1234 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1235 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1236 | vol->nobrl = 1; |
d3485d37 SF |
1237 | /* turn off mandatory locking in mode |
1238 | if remote locking is turned off since the | |
1239 | local vfs will do advisory */ | |
50c2f753 SF |
1240 | if (vol->file_mode == |
1241 | (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
d3485d37 | 1242 | vol->file_mode = S_IALLUGO; |
1da177e4 LT |
1243 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1244 | vol->setuids = 1; | |
1245 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1246 | vol->setuids = 0; | |
d0a9c078 JL |
1247 | } else if (strnicmp(data, "dynperm", 7) == 0) { |
1248 | vol->dynperm = true; | |
1249 | } else if (strnicmp(data, "nodynperm", 9) == 0) { | |
1250 | vol->dynperm = false; | |
1da177e4 LT |
1251 | } else if (strnicmp(data, "nohard", 6) == 0) { |
1252 | vol->retry = 0; | |
1253 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1254 | vol->retry = 1; | |
1255 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1256 | vol->intr = 0; | |
1257 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1258 | vol->intr = 1; | |
50c2f753 | 1259 | } else if (strnicmp(data, "serverino", 7) == 0) { |
1da177e4 | 1260 | vol->server_ino = 1; |
50c2f753 | 1261 | } else if (strnicmp(data, "noserverino", 9) == 0) { |
1da177e4 | 1262 | vol->server_ino = 0; |
50c2f753 | 1263 | } else if (strnicmp(data, "cifsacl", 7) == 0) { |
0a4b92c0 SF |
1264 | vol->cifs_acl = 1; |
1265 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1266 | vol->cifs_acl = 0; | |
50c2f753 | 1267 | } else if (strnicmp(data, "acl", 3) == 0) { |
1da177e4 | 1268 | vol->no_psx_acl = 0; |
50c2f753 | 1269 | } else if (strnicmp(data, "noacl", 5) == 0) { |
1da177e4 | 1270 | vol->no_psx_acl = 1; |
50c2f753 | 1271 | } else if (strnicmp(data, "sign", 4) == 0) { |
750d1151 | 1272 | vol->secFlg |= CIFSSEC_MUST_SIGN; |
95b1cb90 SF |
1273 | } else if (strnicmp(data, "seal", 4) == 0) { |
1274 | /* we do not do the following in secFlags because seal | |
1275 | is a per tree connection (mount) not a per socket | |
1276 | or per-smb connection option in the protocol */ | |
1277 | /* vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
1278 | vol->seal = 1; | |
50c2f753 | 1279 | } else if (strnicmp(data, "direct", 6) == 0) { |
1da177e4 | 1280 | vol->direct_io = 1; |
50c2f753 | 1281 | } else if (strnicmp(data, "forcedirectio", 13) == 0) { |
1da177e4 | 1282 | vol->direct_io = 1; |
50c2f753 | 1283 | } else if (strnicmp(data, "in6_addr", 8) == 0) { |
1da177e4 LT |
1284 | if (!value || !*value) { |
1285 | vol->in6_addr = NULL; | |
1286 | } else if (strnlen(value, 49) == 48) { | |
1287 | vol->in6_addr = value; | |
1288 | } else { | |
50c2f753 SF |
1289 | printk(KERN_WARNING "CIFS: ip v6 address not " |
1290 | "48 characters long\n"); | |
1da177e4 LT |
1291 | return 1; |
1292 | } | |
1293 | } else if (strnicmp(data, "noac", 4) == 0) { | |
50c2f753 SF |
1294 | printk(KERN_WARNING "CIFS: Mount option noac not " |
1295 | "supported. Instead set " | |
1296 | "/proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1da177e4 | 1297 | } else |
50c2f753 SF |
1298 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n", |
1299 | data); | |
1da177e4 LT |
1300 | } |
1301 | if (vol->UNC == NULL) { | |
4523cc30 | 1302 | if (devname == NULL) { |
50c2f753 SF |
1303 | printk(KERN_WARNING "CIFS: Missing UNC name for mount " |
1304 | "target\n"); | |
1da177e4 LT |
1305 | return 1; |
1306 | } | |
1307 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
50c2f753 | 1308 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1309 | if (vol->UNC == NULL) |
1da177e4 | 1310 | return 1; |
50c2f753 | 1311 | strcpy(vol->UNC, devname); |
1da177e4 LT |
1312 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1313 | vol->UNC[0] = '\\'; | |
1314 | vol->UNC[1] = '\\'; | |
1315 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
50c2f753 SF |
1316 | printk(KERN_WARNING "CIFS: UNC Path does not " |
1317 | "begin with // or \\\\ \n"); | |
1da177e4 LT |
1318 | return 1; |
1319 | } | |
7c5e628f IM |
1320 | value = strpbrk(vol->UNC+2, "/\\"); |
1321 | if (value) | |
1322 | *value = '\\'; | |
1da177e4 LT |
1323 | } else { |
1324 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1325 | return 1; | |
1326 | } | |
1327 | } | |
fb8c4b14 | 1328 | if (vol->UNCip == NULL) |
1da177e4 LT |
1329 | vol->UNCip = &vol->UNC[2]; |
1330 | ||
1331 | return 0; | |
1332 | } | |
1333 | ||
1334 | static struct cifsSesInfo * | |
50c2f753 | 1335 | cifs_find_tcp_session(struct in_addr *target_ip_addr, |
1b20d672 CG |
1336 | struct in6_addr *target_ip6_addr, |
1337 | char *userName, struct TCP_Server_Info **psrvTcp) | |
1da177e4 LT |
1338 | { |
1339 | struct list_head *tmp; | |
1340 | struct cifsSesInfo *ses; | |
1b20d672 | 1341 | |
1da177e4 | 1342 | *psrvTcp = NULL; |
1da177e4 | 1343 | |
1b20d672 | 1344 | read_lock(&GlobalSMBSeslock); |
1da177e4 LT |
1345 | list_for_each(tmp, &GlobalSMBSessionList) { |
1346 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
1b20d672 CG |
1347 | if (!ses->server) |
1348 | continue; | |
1349 | ||
1350 | if (target_ip_addr && | |
1351 | ses->server->addr.sockAddr.sin_addr.s_addr != target_ip_addr->s_addr) | |
1352 | continue; | |
1353 | else if (target_ip6_addr && | |
1354 | memcmp(&ses->server->addr.sockAddr6.sin6_addr, | |
1355 | target_ip6_addr, sizeof(*target_ip6_addr))) | |
1356 | continue; | |
02eadeff | 1357 | /* BB lock server and tcp session; increment use count here?? */ |
1b20d672 CG |
1358 | |
1359 | /* found a match on the TCP session */ | |
1360 | *psrvTcp = ses->server; | |
1361 | ||
1362 | /* BB check if reconnection needed */ | |
1363 | if (strncmp(ses->userName, userName, MAX_USERNAME_SIZE) == 0) { | |
1364 | read_unlock(&GlobalSMBSeslock); | |
1365 | /* Found exact match on both TCP and | |
1366 | SMB sessions */ | |
1367 | return ses; | |
1da177e4 LT |
1368 | } |
1369 | /* else tcp and smb sessions need reconnection */ | |
1370 | } | |
1371 | read_unlock(&GlobalSMBSeslock); | |
1b20d672 | 1372 | |
1da177e4 LT |
1373 | return NULL; |
1374 | } | |
1375 | ||
1376 | static struct cifsTconInfo * | |
1377 | find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) | |
1378 | { | |
1379 | struct list_head *tmp; | |
1380 | struct cifsTconInfo *tcon; | |
dea570e0 | 1381 | __be32 old_ip; |
1da177e4 LT |
1382 | |
1383 | read_lock(&GlobalSMBSeslock); | |
dea570e0 | 1384 | |
1da177e4 | 1385 | list_for_each(tmp, &GlobalTreeConnectionList) { |
e466e487 | 1386 | cFYI(1, ("Next tcon")); |
1da177e4 | 1387 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); |
dea570e0 SF |
1388 | if (!tcon->ses || !tcon->ses->server) |
1389 | continue; | |
1390 | ||
1391 | old_ip = tcon->ses->server->addr.sockAddr.sin_addr.s_addr; | |
1392 | cFYI(1, ("old ip addr: %x == new ip %x ?", | |
1393 | old_ip, new_target_ip_addr)); | |
1394 | ||
1395 | if (old_ip != new_target_ip_addr) | |
1396 | continue; | |
1397 | ||
1398 | /* BB lock tcon, server, tcp session and increment use count? */ | |
1399 | /* found a match on the TCP session */ | |
1400 | /* BB check if reconnection needed */ | |
1401 | cFYI(1, ("IP match, old UNC: %s new: %s", | |
1402 | tcon->treeName, uncName)); | |
1403 | ||
1404 | if (strncmp(tcon->treeName, uncName, MAX_TREE_SIZE)) | |
1405 | continue; | |
1406 | ||
1407 | cFYI(1, ("and old usr: %s new: %s", | |
1408 | tcon->treeName, uncName)); | |
1409 | ||
1410 | if (strncmp(tcon->ses->userName, userName, MAX_USERNAME_SIZE)) | |
1411 | continue; | |
1412 | ||
1413 | /* matched smb session (user name) */ | |
1414 | read_unlock(&GlobalSMBSeslock); | |
1415 | return tcon; | |
1da177e4 | 1416 | } |
dea570e0 | 1417 | |
1da177e4 LT |
1418 | read_unlock(&GlobalSMBSeslock); |
1419 | return NULL; | |
1420 | } | |
1421 | ||
1da177e4 | 1422 | int |
50c2f753 SF |
1423 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, |
1424 | const struct nls_table *nls_codepage, unsigned int *pnum_referrals, | |
366781c1 | 1425 | struct dfs_info3_param **preferrals, int remap) |
1da177e4 LT |
1426 | { |
1427 | char *temp_unc; | |
1428 | int rc = 0; | |
1429 | ||
1430 | *pnum_referrals = 0; | |
366781c1 | 1431 | *preferrals = NULL; |
1da177e4 LT |
1432 | |
1433 | if (pSesInfo->ipc_tid == 0) { | |
1434 | temp_unc = kmalloc(2 /* for slashes */ + | |
50c2f753 SF |
1435 | strnlen(pSesInfo->serverName, |
1436 | SERVER_NAME_LEN_WITH_NULL * 2) | |
1da177e4 LT |
1437 | + 1 + 4 /* slash IPC$ */ + 2, |
1438 | GFP_KERNEL); | |
1439 | if (temp_unc == NULL) | |
1440 | return -ENOMEM; | |
1441 | temp_unc[0] = '\\'; | |
1442 | temp_unc[1] = '\\'; | |
1443 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1444 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1445 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1446 | cFYI(1, | |
50c2f753 | 1447 | ("CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid)); |
1da177e4 LT |
1448 | kfree(temp_unc); |
1449 | } | |
1450 | if (rc == 0) | |
c2cf07d5 | 1451 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, |
737b758c | 1452 | pnum_referrals, nls_codepage, remap); |
366781c1 SF |
1453 | /* BB map targetUNCs to dfs_info3 structures, here or |
1454 | in CIFSGetDFSRefer BB */ | |
1da177e4 LT |
1455 | |
1456 | return rc; | |
1457 | } | |
1458 | ||
09e50d55 JL |
1459 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
1460 | static struct lock_class_key cifs_key[2]; | |
1461 | static struct lock_class_key cifs_slock_key[2]; | |
1462 | ||
1463 | static inline void | |
1464 | cifs_reclassify_socket4(struct socket *sock) | |
1465 | { | |
1466 | struct sock *sk = sock->sk; | |
1467 | BUG_ON(sock_owned_by_user(sk)); | |
1468 | sock_lock_init_class_and_name(sk, "slock-AF_INET-CIFS", | |
1469 | &cifs_slock_key[0], "sk_lock-AF_INET-CIFS", &cifs_key[0]); | |
1470 | } | |
1471 | ||
1472 | static inline void | |
1473 | cifs_reclassify_socket6(struct socket *sock) | |
1474 | { | |
1475 | struct sock *sk = sock->sk; | |
1476 | BUG_ON(sock_owned_by_user(sk)); | |
1477 | sock_lock_init_class_and_name(sk, "slock-AF_INET6-CIFS", | |
1478 | &cifs_slock_key[1], "sk_lock-AF_INET6-CIFS", &cifs_key[1]); | |
1479 | } | |
1480 | #else | |
1481 | static inline void | |
1482 | cifs_reclassify_socket4(struct socket *sock) | |
1483 | { | |
1484 | } | |
1485 | ||
1486 | static inline void | |
1487 | cifs_reclassify_socket6(struct socket *sock) | |
1488 | { | |
1489 | } | |
1490 | #endif | |
1491 | ||
1da177e4 | 1492 | /* See RFC1001 section 14 on representation of Netbios names */ |
50c2f753 | 1493 | static void rfc1002mangle(char *target, char *source, unsigned int length) |
1da177e4 | 1494 | { |
50c2f753 | 1495 | unsigned int i, j; |
1da177e4 | 1496 | |
50c2f753 | 1497 | for (i = 0, j = 0; i < (length); i++) { |
1da177e4 LT |
1498 | /* mask a nibble at a time and encode */ |
1499 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1500 | target[j+1] = 'A' + (0x0F & source[i]); | |
50c2f753 | 1501 | j += 2; |
1da177e4 LT |
1502 | } |
1503 | ||
1504 | } | |
1505 | ||
1506 | ||
1507 | static int | |
50c2f753 SF |
1508 | ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, |
1509 | char *netbios_name, char *target_name) | |
1da177e4 LT |
1510 | { |
1511 | int rc = 0; | |
1512 | int connected = 0; | |
1513 | __be16 orig_port = 0; | |
1514 | ||
fb8c4b14 | 1515 | if (*csocket == NULL) { |
50c2f753 SF |
1516 | rc = sock_create_kern(PF_INET, SOCK_STREAM, |
1517 | IPPROTO_TCP, csocket); | |
1da177e4 | 1518 | if (rc < 0) { |
50c2f753 | 1519 | cERROR(1, ("Error %d creating socket", rc)); |
1da177e4 LT |
1520 | *csocket = NULL; |
1521 | return rc; | |
1522 | } else { | |
1523 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
467a8f8d | 1524 | cFYI(1, ("Socket created")); |
50c2f753 | 1525 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
09e50d55 | 1526 | cifs_reclassify_socket4(*csocket); |
1da177e4 LT |
1527 | } |
1528 | } | |
1529 | ||
1530 | psin_server->sin_family = AF_INET; | |
fb8c4b14 | 1531 | if (psin_server->sin_port) { /* user overrode default port */ |
1da177e4 LT |
1532 | rc = (*csocket)->ops->connect(*csocket, |
1533 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1534 | sizeof(struct sockaddr_in), 0); |
1da177e4 LT |
1535 | if (rc >= 0) |
1536 | connected = 1; | |
50c2f753 | 1537 | } |
1da177e4 | 1538 | |
fb8c4b14 | 1539 | if (!connected) { |
50c2f753 | 1540 | /* save original port so we can retry user specified port |
1da177e4 LT |
1541 | later if fall back ports fail this time */ |
1542 | orig_port = psin_server->sin_port; | |
1543 | ||
1544 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1545 | if (psin_server->sin_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1546 | psin_server->sin_port = htons(CIFS_PORT); |
1547 | ||
1548 | rc = (*csocket)->ops->connect(*csocket, | |
1549 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1550 | sizeof(struct sockaddr_in), 0); |
1da177e4 LT |
1551 | if (rc >= 0) |
1552 | connected = 1; | |
1553 | } | |
1554 | } | |
1555 | if (!connected) { | |
1556 | psin_server->sin_port = htons(RFC1001_PORT); | |
1557 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
50c2f753 | 1558 | psin_server, |
6345a3a8 | 1559 | sizeof(struct sockaddr_in), 0); |
50c2f753 | 1560 | if (rc >= 0) |
1da177e4 LT |
1561 | connected = 1; |
1562 | } | |
1563 | ||
1564 | /* give up here - unless we want to retry on different | |
1565 | protocol families some day */ | |
1566 | if (!connected) { | |
fb8c4b14 | 1567 | if (orig_port) |
1da177e4 | 1568 | psin_server->sin_port = orig_port; |
50c2f753 | 1569 | cFYI(1, ("Error %d connecting to server via ipv4", rc)); |
1da177e4 LT |
1570 | sock_release(*csocket); |
1571 | *csocket = NULL; | |
1572 | return rc; | |
1573 | } | |
50c2f753 SF |
1574 | /* Eventually check for other socket options to change from |
1575 | the default. sock_setsockopt not used because it expects | |
1da177e4 | 1576 | user space buffer */ |
50c2f753 SF |
1577 | cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", |
1578 | (*csocket)->sk->sk_sndbuf, | |
b387eaeb | 1579 | (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo)); |
1da177e4 | 1580 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; |
b387eaeb | 1581 | /* make the bufsizes depend on wsize/rsize and max requests */ |
fb8c4b14 | 1582 | if ((*csocket)->sk->sk_sndbuf < (200 * 1024)) |
b387eaeb | 1583 | (*csocket)->sk->sk_sndbuf = 200 * 1024; |
fb8c4b14 | 1584 | if ((*csocket)->sk->sk_rcvbuf < (140 * 1024)) |
b387eaeb | 1585 | (*csocket)->sk->sk_rcvbuf = 140 * 1024; |
1da177e4 LT |
1586 | |
1587 | /* send RFC1001 sessinit */ | |
fb8c4b14 | 1588 | if (psin_server->sin_port == htons(RFC1001_PORT)) { |
1da177e4 | 1589 | /* some servers require RFC1001 sessinit before sending |
50c2f753 | 1590 | negprot - BB check reconnection in case where second |
1da177e4 | 1591 | sessinit is sent but no second negprot */ |
50c2f753 SF |
1592 | struct rfc1002_session_packet *ses_init_buf; |
1593 | struct smb_hdr *smb_buf; | |
1594 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), | |
1595 | GFP_KERNEL); | |
fb8c4b14 | 1596 | if (ses_init_buf) { |
1da177e4 | 1597 | ses_init_buf->trailer.session_req.called_len = 32; |
fb8c4b14 | 1598 | if (target_name && (target_name[0] != 0)) { |
a10faeb2 SF |
1599 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, |
1600 | target_name, 16); | |
1601 | } else { | |
1602 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
50c2f753 | 1603 | DEFAULT_CIFS_CALLED_NAME, 16); |
a10faeb2 SF |
1604 | } |
1605 | ||
1da177e4 LT |
1606 | ses_init_buf->trailer.session_req.calling_len = 32; |
1607 | /* calling name ends in null (byte 16) from old smb | |
1608 | convention. */ | |
50c2f753 | 1609 | if (netbios_name && (netbios_name[0] != 0)) { |
1da177e4 | 1610 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, |
50c2f753 | 1611 | netbios_name, 16); |
1da177e4 LT |
1612 | } else { |
1613 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
50c2f753 | 1614 | "LINUX_CIFS_CLNT", 16); |
1da177e4 LT |
1615 | } |
1616 | ses_init_buf->trailer.session_req.scope1 = 0; | |
1617 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1618 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1619 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1620 | smb_buf->smb_buf_length = 0x81000044; | |
1621 | rc = smb_send(*csocket, smb_buf, 0x44, | |
1622 | (struct sockaddr *)psin_server); | |
1623 | kfree(ses_init_buf); | |
50c2f753 | 1624 | msleep(1); /* RFC1001 layer in at least one server |
083d3a2c SF |
1625 | requires very short break before negprot |
1626 | presumably because not expecting negprot | |
1627 | to follow so fast. This is a simple | |
50c2f753 | 1628 | solution that works without |
083d3a2c SF |
1629 | complicating the code and causes no |
1630 | significant slowing down on mount | |
1631 | for everyone else */ | |
1da177e4 | 1632 | } |
50c2f753 | 1633 | /* else the negprot may still work without this |
1da177e4 | 1634 | even though malloc failed */ |
50c2f753 | 1635 | |
1da177e4 | 1636 | } |
50c2f753 | 1637 | |
1da177e4 LT |
1638 | return rc; |
1639 | } | |
1640 | ||
1641 | static int | |
1642 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket) | |
1643 | { | |
1644 | int rc = 0; | |
1645 | int connected = 0; | |
1646 | __be16 orig_port = 0; | |
1647 | ||
fb8c4b14 | 1648 | if (*csocket == NULL) { |
50c2f753 SF |
1649 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, |
1650 | IPPROTO_TCP, csocket); | |
1da177e4 | 1651 | if (rc < 0) { |
50c2f753 | 1652 | cERROR(1, ("Error %d creating ipv6 socket", rc)); |
1da177e4 LT |
1653 | *csocket = NULL; |
1654 | return rc; | |
1655 | } else { | |
1656 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
fb8c4b14 | 1657 | cFYI(1, ("ipv6 Socket created")); |
1da177e4 | 1658 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
09e50d55 | 1659 | cifs_reclassify_socket6(*csocket); |
1da177e4 LT |
1660 | } |
1661 | } | |
1662 | ||
1663 | psin_server->sin6_family = AF_INET6; | |
1664 | ||
fb8c4b14 | 1665 | if (psin_server->sin6_port) { /* user overrode default port */ |
1da177e4 LT |
1666 | rc = (*csocket)->ops->connect(*csocket, |
1667 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1668 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1669 | if (rc >= 0) |
1670 | connected = 1; | |
50c2f753 | 1671 | } |
1da177e4 | 1672 | |
fb8c4b14 | 1673 | if (!connected) { |
50c2f753 | 1674 | /* save original port so we can retry user specified port |
1da177e4 LT |
1675 | later if fall back ports fail this time */ |
1676 | ||
1677 | orig_port = psin_server->sin6_port; | |
1678 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1679 | if (psin_server->sin6_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1680 | psin_server->sin6_port = htons(CIFS_PORT); |
1681 | ||
1682 | rc = (*csocket)->ops->connect(*csocket, | |
1683 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1684 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1685 | if (rc >= 0) |
1686 | connected = 1; | |
1687 | } | |
1688 | } | |
1689 | if (!connected) { | |
1690 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1691 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
6345a3a8 | 1692 | psin_server, sizeof(struct sockaddr_in6), 0); |
50c2f753 | 1693 | if (rc >= 0) |
1da177e4 LT |
1694 | connected = 1; |
1695 | } | |
1696 | ||
1697 | /* give up here - unless we want to retry on different | |
1698 | protocol families some day */ | |
1699 | if (!connected) { | |
fb8c4b14 | 1700 | if (orig_port) |
1da177e4 | 1701 | psin_server->sin6_port = orig_port; |
50c2f753 | 1702 | cFYI(1, ("Error %d connecting to server via ipv6", rc)); |
1da177e4 LT |
1703 | sock_release(*csocket); |
1704 | *csocket = NULL; | |
1705 | return rc; | |
1706 | } | |
50c2f753 SF |
1707 | /* Eventually check for other socket options to change from |
1708 | the default. sock_setsockopt not used because it expects | |
1da177e4 LT |
1709 | user space buffer */ |
1710 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
50c2f753 | 1711 | |
1da177e4 LT |
1712 | return rc; |
1713 | } | |
1714 | ||
50c2f753 SF |
1715 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon, |
1716 | struct super_block *sb, struct smb_vol *vol_info) | |
8af18971 SF |
1717 | { |
1718 | /* if we are reconnecting then should we check to see if | |
1719 | * any requested capabilities changed locally e.g. via | |
1720 | * remount but we can not do much about it here | |
1721 | * if they have (even if we could detect it by the following) | |
1722 | * Perhaps we could add a backpointer to array of sb from tcon | |
1723 | * or if we change to make all sb to same share the same | |
1724 | * sb as NFS - then we only have one backpointer to sb. | |
1725 | * What if we wanted to mount the server share twice once with | |
1726 | * and once without posixacls or posix paths? */ | |
1727 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
50c2f753 | 1728 | |
c18c842b SF |
1729 | if (vol_info && vol_info->no_linux_ext) { |
1730 | tcon->fsUnixInfo.Capability = 0; | |
1731 | tcon->unix_ext = 0; /* Unix Extensions disabled */ | |
1732 | cFYI(1, ("Linux protocol extensions disabled")); | |
1733 | return; | |
1734 | } else if (vol_info) | |
1735 | tcon->unix_ext = 1; /* Unix Extensions supported */ | |
1736 | ||
1737 | if (tcon->unix_ext == 0) { | |
1738 | cFYI(1, ("Unix extensions disabled so not set on reconnect")); | |
1739 | return; | |
1740 | } | |
50c2f753 | 1741 | |
fb8c4b14 | 1742 | if (!CIFSSMBQFSUnixInfo(xid, tcon)) { |
8af18971 | 1743 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
50c2f753 | 1744 | |
8af18971 SF |
1745 | /* check for reconnect case in which we do not |
1746 | want to change the mount behavior if we can avoid it */ | |
fb8c4b14 | 1747 | if (vol_info == NULL) { |
50c2f753 | 1748 | /* turn off POSIX ACL and PATHNAMES if not set |
8af18971 SF |
1749 | originally at mount time */ |
1750 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) | |
1751 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
11b6d645 IM |
1752 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1753 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) | |
1754 | cERROR(1, ("POSIXPATH support change")); | |
8af18971 | 1755 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
11b6d645 IM |
1756 | } else if ((cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1757 | cERROR(1, ("possible reconnect error")); | |
1758 | cERROR(1, | |
1759 | ("server disabled POSIX path support")); | |
1760 | } | |
8af18971 | 1761 | } |
50c2f753 | 1762 | |
8af18971 | 1763 | cap &= CIFS_UNIX_CAP_MASK; |
75865f8c | 1764 | if (vol_info && vol_info->no_psx_acl) |
8af18971 | 1765 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
75865f8c | 1766 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
fb8c4b14 SF |
1767 | cFYI(1, ("negotiated posix acl support")); |
1768 | if (sb) | |
8af18971 SF |
1769 | sb->s_flags |= MS_POSIXACL; |
1770 | } | |
1771 | ||
75865f8c | 1772 | if (vol_info && vol_info->posix_paths == 0) |
8af18971 | 1773 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
75865f8c | 1774 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
fb8c4b14 | 1775 | cFYI(1, ("negotiate posix pathnames")); |
75865f8c | 1776 | if (sb) |
50c2f753 | 1777 | CIFS_SB(sb)->mnt_cifs_flags |= |
8af18971 SF |
1778 | CIFS_MOUNT_POSIX_PATHS; |
1779 | } | |
50c2f753 | 1780 | |
984acfe1 SF |
1781 | /* We might be setting the path sep back to a different |
1782 | form if we are reconnecting and the server switched its | |
50c2f753 | 1783 | posix path capability for this share */ |
75865f8c | 1784 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
984acfe1 | 1785 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
75865f8c SF |
1786 | |
1787 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { | |
1788 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { | |
1789 | CIFS_SB(sb)->rsize = 127 * 1024; | |
90c81e0b SF |
1790 | cFYI(DBG2, |
1791 | ("larger reads not supported by srv")); | |
75865f8c SF |
1792 | } |
1793 | } | |
50c2f753 SF |
1794 | |
1795 | ||
1796 | cFYI(1, ("Negotiate caps 0x%x", (int)cap)); | |
8af18971 | 1797 | #ifdef CONFIG_CIFS_DEBUG2 |
75865f8c | 1798 | if (cap & CIFS_UNIX_FCNTL_CAP) |
fb8c4b14 | 1799 | cFYI(1, ("FCNTL cap")); |
75865f8c | 1800 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
fb8c4b14 | 1801 | cFYI(1, ("EXTATTR cap")); |
75865f8c | 1802 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
fb8c4b14 | 1803 | cFYI(1, ("POSIX path cap")); |
75865f8c | 1804 | if (cap & CIFS_UNIX_XATTR_CAP) |
fb8c4b14 | 1805 | cFYI(1, ("XATTR cap")); |
75865f8c | 1806 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
fb8c4b14 | 1807 | cFYI(1, ("POSIX ACL cap")); |
75865f8c | 1808 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
fb8c4b14 | 1809 | cFYI(1, ("very large read cap")); |
75865f8c | 1810 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) |
fb8c4b14 | 1811 | cFYI(1, ("very large write cap")); |
8af18971 SF |
1812 | #endif /* CIFS_DEBUG2 */ |
1813 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
442aa310 | 1814 | if (vol_info == NULL) { |
5a44b319 | 1815 | cFYI(1, ("resetting capabilities failed")); |
442aa310 | 1816 | } else |
5a44b319 SF |
1817 | cERROR(1, ("Negotiating Unix capabilities " |
1818 | "with the server failed. Consider " | |
1819 | "mounting with the Unix Extensions\n" | |
1820 | "disabled, if problems are found, " | |
1821 | "by specifying the nounix mount " | |
2224f4e5 | 1822 | "option.")); |
5a44b319 | 1823 | |
8af18971 SF |
1824 | } |
1825 | } | |
1826 | } | |
1827 | ||
03a143c9 SF |
1828 | static void |
1829 | convert_delimiter(char *path, char delim) | |
1830 | { | |
1831 | int i; | |
c2d68ea6 | 1832 | char old_delim; |
03a143c9 SF |
1833 | |
1834 | if (path == NULL) | |
1835 | return; | |
1836 | ||
582d21e5 | 1837 | if (delim == '/') |
c2d68ea6 SF |
1838 | old_delim = '\\'; |
1839 | else | |
1840 | old_delim = '/'; | |
1841 | ||
03a143c9 | 1842 | for (i = 0; path[i] != '\0'; i++) { |
c2d68ea6 | 1843 | if (path[i] == old_delim) |
03a143c9 SF |
1844 | path[i] = delim; |
1845 | } | |
1846 | } | |
1847 | ||
1da177e4 LT |
1848 | int |
1849 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1850 | char *mount_data, const char *devname) | |
1851 | { | |
1852 | int rc = 0; | |
1853 | int xid; | |
1854 | int address_type = AF_INET; | |
1855 | struct socket *csocket = NULL; | |
1856 | struct sockaddr_in sin_server; | |
1857 | struct sockaddr_in6 sin_server6; | |
1858 | struct smb_vol volume_info; | |
1859 | struct cifsSesInfo *pSesInfo = NULL; | |
1860 | struct cifsSesInfo *existingCifsSes = NULL; | |
1861 | struct cifsTconInfo *tcon = NULL; | |
1862 | struct TCP_Server_Info *srvTcp = NULL; | |
1863 | ||
1864 | xid = GetXid(); | |
1865 | ||
1866 | /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ | |
50c2f753 SF |
1867 | |
1868 | memset(&volume_info, 0, sizeof(struct smb_vol)); | |
1da177e4 | 1869 | if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { |
70fe7dc0 JL |
1870 | rc = -EINVAL; |
1871 | goto out; | |
1da177e4 LT |
1872 | } |
1873 | ||
8426c39c | 1874 | if (volume_info.nullauth) { |
fb8c4b14 | 1875 | cFYI(1, ("null user")); |
9b8f5f57 | 1876 | volume_info.username = ""; |
8426c39c | 1877 | } else if (volume_info.username) { |
1da177e4 | 1878 | /* BB fixme parse for domain name here */ |
467a8f8d | 1879 | cFYI(1, ("Username: %s", volume_info.username)); |
1da177e4 | 1880 | } else { |
bf820679 | 1881 | cifserror("No username specified"); |
50c2f753 SF |
1882 | /* In userspace mount helper we can get user name from alternate |
1883 | locations such as env variables and files on disk */ | |
70fe7dc0 JL |
1884 | rc = -EINVAL; |
1885 | goto out; | |
1da177e4 LT |
1886 | } |
1887 | ||
1888 | if (volume_info.UNCip && volume_info.UNC) { | |
50c2f753 SF |
1889 | rc = cifs_inet_pton(AF_INET, volume_info.UNCip, |
1890 | &sin_server.sin_addr.s_addr); | |
1da177e4 | 1891 | |
fb8c4b14 | 1892 | if (rc <= 0) { |
1da177e4 | 1893 | /* not ipv4 address, try ipv6 */ |
50c2f753 SF |
1894 | rc = cifs_inet_pton(AF_INET6, volume_info.UNCip, |
1895 | &sin_server6.sin6_addr.in6_u); | |
fb8c4b14 | 1896 | if (rc > 0) |
1da177e4 LT |
1897 | address_type = AF_INET6; |
1898 | } else { | |
1899 | address_type = AF_INET; | |
1900 | } | |
50c2f753 | 1901 | |
fb8c4b14 | 1902 | if (rc <= 0) { |
1da177e4 | 1903 | /* we failed translating address */ |
70fe7dc0 JL |
1904 | rc = -EINVAL; |
1905 | goto out; | |
1da177e4 LT |
1906 | } |
1907 | ||
1908 | cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); | |
1909 | /* success */ | |
1910 | rc = 0; | |
50c2f753 SF |
1911 | } else if (volume_info.UNCip) { |
1912 | /* BB using ip addr as server name to connect to the | |
1913 | DFS root below */ | |
1914 | cERROR(1, ("Connecting to DFS root not implemented yet")); | |
70fe7dc0 JL |
1915 | rc = -EINVAL; |
1916 | goto out; | |
1da177e4 LT |
1917 | } else /* which servers DFS root would we conect to */ { |
1918 | cERROR(1, | |
50c2f753 SF |
1919 | ("CIFS mount error: No UNC path (e.g. -o " |
1920 | "unc=//192.168.1.100/public) specified")); | |
70fe7dc0 JL |
1921 | rc = -EINVAL; |
1922 | goto out; | |
1da177e4 LT |
1923 | } |
1924 | ||
1925 | /* this is needed for ASCII cp to Unicode converts */ | |
fb8c4b14 | 1926 | if (volume_info.iocharset == NULL) { |
1da177e4 LT |
1927 | cifs_sb->local_nls = load_nls_default(); |
1928 | /* load_nls_default can not return null */ | |
1929 | } else { | |
1930 | cifs_sb->local_nls = load_nls(volume_info.iocharset); | |
fb8c4b14 | 1931 | if (cifs_sb->local_nls == NULL) { |
50c2f753 SF |
1932 | cERROR(1, ("CIFS mount error: iocharset %s not found", |
1933 | volume_info.iocharset)); | |
70fe7dc0 JL |
1934 | rc = -ELIBACC; |
1935 | goto out; | |
1da177e4 LT |
1936 | } |
1937 | } | |
1938 | ||
fb8c4b14 | 1939 | if (address_type == AF_INET) |
1da177e4 LT |
1940 | existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr, |
1941 | NULL /* no ipv6 addr */, | |
1942 | volume_info.username, &srvTcp); | |
fb8c4b14 SF |
1943 | else if (address_type == AF_INET6) { |
1944 | cFYI(1, ("looking for ipv6 address")); | |
1da177e4 LT |
1945 | existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */, |
1946 | &sin_server6.sin6_addr, | |
1947 | volume_info.username, &srvTcp); | |
5858ae44 | 1948 | } else { |
70fe7dc0 JL |
1949 | rc = -EINVAL; |
1950 | goto out; | |
1da177e4 LT |
1951 | } |
1952 | ||
1da177e4 | 1953 | if (srvTcp) { |
50c2f753 | 1954 | cFYI(1, ("Existing tcp session with server found")); |
1da177e4 | 1955 | } else { /* create socket */ |
4523cc30 | 1956 | if (volume_info.port) |
1da177e4 LT |
1957 | sin_server.sin_port = htons(volume_info.port); |
1958 | else | |
1959 | sin_server.sin_port = 0; | |
5858ae44 | 1960 | if (address_type == AF_INET6) { |
fb8c4b14 | 1961 | cFYI(1, ("attempting ipv6 connect")); |
5858ae44 SF |
1962 | /* BB should we allow ipv6 on port 139? */ |
1963 | /* other OS never observed in Wild doing 139 with v6 */ | |
50c2f753 SF |
1964 | rc = ipv6_connect(&sin_server6, &csocket); |
1965 | } else | |
1966 | rc = ipv4_connect(&sin_server, &csocket, | |
a10faeb2 SF |
1967 | volume_info.source_rfc1001_name, |
1968 | volume_info.target_rfc1001_name); | |
1da177e4 | 1969 | if (rc < 0) { |
50c2f753 SF |
1970 | cERROR(1, ("Error connecting to IPv4 socket. " |
1971 | "Aborting operation")); | |
4523cc30 | 1972 | if (csocket != NULL) |
1da177e4 | 1973 | sock_release(csocket); |
70fe7dc0 | 1974 | goto out; |
1da177e4 LT |
1975 | } |
1976 | ||
a8a11d39 MK |
1977 | srvTcp = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); |
1978 | if (!srvTcp) { | |
1da177e4 LT |
1979 | rc = -ENOMEM; |
1980 | sock_release(csocket); | |
70fe7dc0 | 1981 | goto out; |
1da177e4 | 1982 | } else { |
50c2f753 | 1983 | memcpy(&srvTcp->addr.sockAddr, &sin_server, |
6345a3a8 | 1984 | sizeof(struct sockaddr_in)); |
50c2f753 | 1985 | atomic_set(&srvTcp->inFlight, 0); |
1da177e4 LT |
1986 | /* BB Add code for ipv6 case too */ |
1987 | srvTcp->ssocket = csocket; | |
1988 | srvTcp->protocolType = IPV4; | |
c359cf3c JL |
1989 | srvTcp->hostname = extract_hostname(volume_info.UNC); |
1990 | if (IS_ERR(srvTcp->hostname)) { | |
1991 | rc = PTR_ERR(srvTcp->hostname); | |
1992 | sock_release(csocket); | |
1993 | goto out; | |
1994 | } | |
1da177e4 LT |
1995 | init_waitqueue_head(&srvTcp->response_q); |
1996 | init_waitqueue_head(&srvTcp->request_q); | |
1997 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
1998 | /* at this point we are the only ones with the pointer | |
1999 | to the struct since the kernel thread not created yet | |
2000 | so no need to spinlock this init of tcpStatus */ | |
2001 | srvTcp->tcpStatus = CifsNew; | |
2002 | init_MUTEX(&srvTcp->tcpSem); | |
aaf737ad | 2003 | srvTcp->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, srvTcp, "cifsd"); |
8840dee9 | 2004 | if (IS_ERR(srvTcp->tsk)) { |
aaf737ad | 2005 | rc = PTR_ERR(srvTcp->tsk); |
50c2f753 | 2006 | cERROR(1, ("error %d create cifsd thread", rc)); |
aaf737ad | 2007 | srvTcp->tsk = NULL; |
1da177e4 | 2008 | sock_release(csocket); |
c359cf3c | 2009 | kfree(srvTcp->hostname); |
70fe7dc0 | 2010 | goto out; |
f191401f | 2011 | } |
f191401f | 2012 | rc = 0; |
50c2f753 SF |
2013 | memcpy(srvTcp->workstation_RFC1001_name, |
2014 | volume_info.source_rfc1001_name, 16); | |
2015 | memcpy(srvTcp->server_RFC1001_name, | |
2016 | volume_info.target_rfc1001_name, 16); | |
ad009ac9 | 2017 | srvTcp->sequence_number = 0; |
1da177e4 LT |
2018 | } |
2019 | } | |
2020 | ||
2021 | if (existingCifsSes) { | |
2022 | pSesInfo = existingCifsSes; | |
1d9a8852 JL |
2023 | cFYI(1, ("Existing smb sess found (status=%d)", |
2024 | pSesInfo->status)); | |
88e7d705 | 2025 | down(&pSesInfo->sesSem); |
1d9a8852 JL |
2026 | if (pSesInfo->status == CifsNeedReconnect) { |
2027 | cFYI(1, ("Session needs reconnect")); | |
1d9a8852 JL |
2028 | rc = cifs_setup_session(xid, pSesInfo, |
2029 | cifs_sb->local_nls); | |
1d9a8852 | 2030 | } |
88e7d705 | 2031 | up(&pSesInfo->sesSem); |
1da177e4 | 2032 | } else if (!rc) { |
bf820679 | 2033 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 LT |
2034 | pSesInfo = sesInfoAlloc(); |
2035 | if (pSesInfo == NULL) | |
2036 | rc = -ENOMEM; | |
2037 | else { | |
2038 | pSesInfo->server = srvTcp; | |
2039 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
2040 | NIPQUAD(sin_server.sin_addr.s_addr)); | |
2041 | } | |
2042 | ||
50c2f753 SF |
2043 | if (!rc) { |
2044 | /* volume_info.password freed at unmount */ | |
70fe7dc0 | 2045 | if (volume_info.password) { |
1da177e4 | 2046 | pSesInfo->password = volume_info.password; |
70fe7dc0 JL |
2047 | /* set to NULL to prevent freeing on exit */ |
2048 | volume_info.password = NULL; | |
2049 | } | |
1da177e4 LT |
2050 | if (volume_info.username) |
2051 | strncpy(pSesInfo->userName, | |
50c2f753 SF |
2052 | volume_info.username, |
2053 | MAX_USERNAME_SIZE); | |
3979877e SF |
2054 | if (volume_info.domainname) { |
2055 | int len = strlen(volume_info.domainname); | |
50c2f753 | 2056 | pSesInfo->domainName = |
3979877e | 2057 | kmalloc(len + 1, GFP_KERNEL); |
4523cc30 | 2058 | if (pSesInfo->domainName) |
3979877e SF |
2059 | strcpy(pSesInfo->domainName, |
2060 | volume_info.domainname); | |
2061 | } | |
1da177e4 | 2062 | pSesInfo->linux_uid = volume_info.linux_uid; |
750d1151 | 2063 | pSesInfo->overrideSecFlg = volume_info.secFlg; |
1da177e4 | 2064 | down(&pSesInfo->sesSem); |
189acaae | 2065 | /* BB FIXME need to pass vol->secFlgs BB */ |
50c2f753 SF |
2066 | rc = cifs_setup_session(xid, pSesInfo, |
2067 | cifs_sb->local_nls); | |
1da177e4 | 2068 | up(&pSesInfo->sesSem); |
4523cc30 | 2069 | if (!rc) |
1da177e4 | 2070 | atomic_inc(&srvTcp->socketUseCount); |
70fe7dc0 | 2071 | } |
1da177e4 | 2072 | } |
50c2f753 | 2073 | |
1da177e4 LT |
2074 | /* search for existing tcon to this server share */ |
2075 | if (!rc) { | |
4523cc30 | 2076 | if (volume_info.rsize > CIFSMaxBufSize) { |
50c2f753 | 2077 | cERROR(1, ("rsize %d too large, using MaxBufSize", |
0ae0efad SF |
2078 | volume_info.rsize)); |
2079 | cifs_sb->rsize = CIFSMaxBufSize; | |
75865f8c SF |
2080 | } else if ((volume_info.rsize) && |
2081 | (volume_info.rsize <= CIFSMaxBufSize)) | |
1da177e4 | 2082 | cifs_sb->rsize = volume_info.rsize; |
0ae0efad SF |
2083 | else /* default */ |
2084 | cifs_sb->rsize = CIFSMaxBufSize; | |
2085 | ||
4523cc30 | 2086 | if (volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { |
50c2f753 | 2087 | cERROR(1, ("wsize %d too large, using 4096 instead", |
0ae0efad SF |
2088 | volume_info.wsize)); |
2089 | cifs_sb->wsize = 4096; | |
4523cc30 | 2090 | } else if (volume_info.wsize) |
1da177e4 LT |
2091 | cifs_sb->wsize = volume_info.wsize; |
2092 | else | |
50c2f753 | 2093 | cifs_sb->wsize = |
1877c9ea SF |
2094 | min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE, |
2095 | 127*1024); | |
17cbbafe | 2096 | /* old default of CIFSMaxBufSize was too small now |
50c2f753 | 2097 | that SMB Write2 can send multiple pages in kvec. |
17cbbafe SF |
2098 | RFC1001 does not describe what happens when frame |
2099 | bigger than 128K is sent so use that as max in | |
2100 | conjunction with 52K kvec constraint on arch with 4K | |
2101 | page size */ | |
2102 | ||
4523cc30 | 2103 | if (cifs_sb->rsize < 2048) { |
50c2f753 | 2104 | cifs_sb->rsize = 2048; |
6cec2aed | 2105 | /* Windows ME may prefer this */ |
467a8f8d | 2106 | cFYI(1, ("readsize set to minimum: 2048")); |
1da177e4 | 2107 | } |
2fe87f02 SF |
2108 | /* calculate prepath */ |
2109 | cifs_sb->prepath = volume_info.prepath; | |
4523cc30 | 2110 | if (cifs_sb->prepath) { |
2fe87f02 | 2111 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); |
03a143c9 SF |
2112 | /* we can not convert the / to \ in the path |
2113 | separators in the prefixpath yet because we do not | |
2114 | know (until reset_cifs_unix_caps is called later) | |
2115 | whether POSIX PATH CAP is available. We normalize | |
2116 | the / to \ after reset_cifs_unix_caps is called */ | |
2fe87f02 | 2117 | volume_info.prepath = NULL; |
50c2f753 | 2118 | } else |
2fe87f02 | 2119 | cifs_sb->prepathlen = 0; |
1da177e4 LT |
2120 | cifs_sb->mnt_uid = volume_info.linux_uid; |
2121 | cifs_sb->mnt_gid = volume_info.linux_gid; | |
2122 | cifs_sb->mnt_file_mode = volume_info.file_mode; | |
2123 | cifs_sb->mnt_dir_mode = volume_info.dir_mode; | |
467a8f8d SF |
2124 | cFYI(1, ("file mode: 0x%x dir mode: 0x%x", |
2125 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode)); | |
1da177e4 | 2126 | |
4523cc30 | 2127 | if (volume_info.noperm) |
1da177e4 | 2128 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; |
4523cc30 | 2129 | if (volume_info.setuids) |
1da177e4 | 2130 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; |
4523cc30 | 2131 | if (volume_info.server_ino) |
1da177e4 | 2132 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; |
4523cc30 | 2133 | if (volume_info.remap) |
6a0b4824 | 2134 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; |
4523cc30 | 2135 | if (volume_info.no_xattr) |
1da177e4 | 2136 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; |
4523cc30 | 2137 | if (volume_info.sfu_emul) |
d7245c2c | 2138 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; |
4523cc30 | 2139 | if (volume_info.nobrl) |
c46fa8ac | 2140 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; |
4523cc30 | 2141 | if (volume_info.cifs_acl) |
0a4b92c0 | 2142 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; |
4523cc30 SF |
2143 | if (volume_info.override_uid) |
2144 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; | |
2145 | if (volume_info.override_gid) | |
2146 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; | |
d0a9c078 JL |
2147 | if (volume_info.dynperm) |
2148 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM; | |
4523cc30 | 2149 | if (volume_info.direct_io) { |
467a8f8d | 2150 | cFYI(1, ("mounting share using direct i/o")); |
1da177e4 LT |
2151 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
2152 | } | |
2153 | ||
27adb44c SF |
2154 | if ((volume_info.cifs_acl) && (volume_info.dynperm)) |
2155 | cERROR(1, ("mount option dynperm ignored if cifsacl " | |
2156 | "mount option supported")); | |
2157 | ||
1da177e4 LT |
2158 | tcon = |
2159 | find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, | |
2160 | volume_info.username); | |
2161 | if (tcon) { | |
bf820679 | 2162 | cFYI(1, ("Found match on UNC path")); |
1da177e4 LT |
2163 | /* we can have only one retry value for a connection |
2164 | to a share so for resources mounted more than once | |
50c2f753 | 2165 | to the same server share the last value passed in |
1da177e4 LT |
2166 | for the retry flag is used */ |
2167 | tcon->retry = volume_info.retry; | |
d3485d37 | 2168 | tcon->nocase = volume_info.nocase; |
95b1cb90 SF |
2169 | if (tcon->seal != volume_info.seal) |
2170 | cERROR(1, ("transport encryption setting " | |
2171 | "conflicts with existing tid")); | |
1da177e4 LT |
2172 | } else { |
2173 | tcon = tconInfoAlloc(); | |
2174 | if (tcon == NULL) | |
2175 | rc = -ENOMEM; | |
2176 | else { | |
50c2f753 | 2177 | /* check for null share name ie connecting to |
8af18971 | 2178 | * dfs root */ |
1da177e4 | 2179 | |
50c2f753 | 2180 | /* BB check if this works for exactly length |
8af18971 | 2181 | * three strings */ |
1da177e4 LT |
2182 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) |
2183 | && (strchr(volume_info.UNC + 3, '/') == | |
2184 | NULL)) { | |
646dd539 | 2185 | /* rc = connect_to_dfs_path(xid, pSesInfo, |
8af18971 | 2186 | "", cifs_sb->local_nls, |
50c2f753 | 2187 | cifs_sb->mnt_cifs_flags & |
646dd539 SF |
2188 | CIFS_MOUNT_MAP_SPECIAL_CHR);*/ |
2189 | cFYI(1, ("DFS root not supported")); | |
70fe7dc0 JL |
2190 | rc = -ENODEV; |
2191 | goto out; | |
1da177e4 | 2192 | } else { |
8af18971 SF |
2193 | /* BB Do we need to wrap sesSem around |
2194 | * this TCon call and Unix SetFS as | |
2195 | * we do on SessSetup and reconnect? */ | |
50c2f753 | 2196 | rc = CIFSTCon(xid, pSesInfo, |
1da177e4 LT |
2197 | volume_info.UNC, |
2198 | tcon, cifs_sb->local_nls); | |
2199 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
2200 | } | |
2201 | if (!rc) { | |
2202 | atomic_inc(&pSesInfo->inUse); | |
2203 | tcon->retry = volume_info.retry; | |
d3485d37 | 2204 | tcon->nocase = volume_info.nocase; |
95b1cb90 | 2205 | tcon->seal = volume_info.seal; |
1da177e4 LT |
2206 | } |
2207 | } | |
2208 | } | |
2209 | } | |
4523cc30 | 2210 | if (pSesInfo) { |
1da177e4 LT |
2211 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
2212 | sb->s_maxbytes = (u64) 1 << 63; | |
2213 | } else | |
2214 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
2215 | } | |
2216 | ||
8af18971 | 2217 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
1da177e4 LT |
2218 | sb->s_time_gran = 100; |
2219 | ||
2220 | /* on error free sesinfo and tcon struct if needed */ | |
2221 | if (rc) { | |
2222 | /* if session setup failed, use count is zero but | |
2223 | we still need to free cifsd thread */ | |
4523cc30 | 2224 | if (atomic_read(&srvTcp->socketUseCount) == 0) { |
1da177e4 LT |
2225 | spin_lock(&GlobalMid_Lock); |
2226 | srvTcp->tcpStatus = CifsExiting; | |
2227 | spin_unlock(&GlobalMid_Lock); | |
4523cc30 | 2228 | if (srvTcp->tsk) { |
28356a16 SF |
2229 | /* If we could verify that kthread_stop would |
2230 | always wake up processes blocked in | |
2231 | tcp in recv_mesg then we could remove the | |
2232 | send_sig call */ | |
50c2f753 | 2233 | force_sig(SIGKILL, srvTcp->tsk); |
e691b9d1 | 2234 | kthread_stop(srvTcp->tsk); |
f191401f | 2235 | } |
1da177e4 LT |
2236 | } |
2237 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
2238 | if (tcon) /* up accidently freeing someone elses tcon struct */ | |
2239 | tconInfoFree(tcon); | |
2240 | if (existingCifsSes == NULL) { | |
2241 | if (pSesInfo) { | |
50c2f753 | 2242 | if ((pSesInfo->server) && |
1da177e4 LT |
2243 | (pSesInfo->status == CifsGood)) { |
2244 | int temp_rc; | |
2245 | temp_rc = CIFSSMBLogoff(xid, pSesInfo); | |
2246 | /* if the socketUseCount is now zero */ | |
4523cc30 | 2247 | if ((temp_rc == -ESHUTDOWN) && |
50c2f753 | 2248 | (pSesInfo->server) && |
5d9c7206 | 2249 | (pSesInfo->server->tsk)) { |
5d9c7206 J |
2250 | force_sig(SIGKILL, |
2251 | pSesInfo->server->tsk); | |
e691b9d1 | 2252 | kthread_stop(pSesInfo->server->tsk); |
f191401f | 2253 | } |
a013689d | 2254 | } else { |
1da177e4 | 2255 | cFYI(1, ("No session or bad tcon")); |
a013689d SF |
2256 | if ((pSesInfo->server) && |
2257 | (pSesInfo->server->tsk)) { | |
a013689d SF |
2258 | force_sig(SIGKILL, |
2259 | pSesInfo->server->tsk); | |
e691b9d1 | 2260 | kthread_stop(pSesInfo->server->tsk); |
a013689d SF |
2261 | } |
2262 | } | |
1da177e4 LT |
2263 | sesInfoFree(pSesInfo); |
2264 | /* pSesInfo = NULL; */ | |
2265 | } | |
2266 | } | |
2267 | } else { | |
2268 | atomic_inc(&tcon->useCount); | |
2269 | cifs_sb->tcon = tcon; | |
2270 | tcon->ses = pSesInfo; | |
2271 | ||
82940a46 | 2272 | /* do not care if following two calls succeed - informational */ |
7f8ed420 SF |
2273 | if (!tcon->ipc) { |
2274 | CIFSSMBQFSDeviceInfo(xid, tcon); | |
2275 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
2276 | } | |
50c2f753 | 2277 | |
8af18971 SF |
2278 | /* tell server which Unix caps we support */ |
2279 | if (tcon->ses->capabilities & CAP_UNIX) | |
c18c842b SF |
2280 | /* reset of caps checks mount to see if unix extensions |
2281 | disabled for just this mount */ | |
8af18971 | 2282 | reset_cifs_unix_caps(xid, tcon, sb, &volume_info); |
c18c842b SF |
2283 | else |
2284 | tcon->unix_ext = 0; /* server does not support them */ | |
2285 | ||
03a143c9 | 2286 | /* convert forward to back slashes in prepath here if needed */ |
11b6d645 IM |
2287 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0) |
2288 | convert_delimiter(cifs_sb->prepath, | |
2289 | CIFS_DIR_SEP(cifs_sb)); | |
03a143c9 | 2290 | |
c18c842b | 2291 | if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) { |
75865f8c | 2292 | cifs_sb->rsize = 1024 * 127; |
90c81e0b SF |
2293 | cFYI(DBG2, |
2294 | ("no very large read support, rsize now 127K")); | |
75865f8c | 2295 | } |
3e84469d SF |
2296 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
2297 | cifs_sb->wsize = min(cifs_sb->wsize, | |
2298 | (tcon->ses->server->maxBuf - | |
2299 | MAX_CIFS_HDR_SIZE)); | |
0ae0efad | 2300 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
50c2f753 SF |
2301 | cifs_sb->rsize = min(cifs_sb->rsize, |
2302 | (tcon->ses->server->maxBuf - | |
2303 | MAX_CIFS_HDR_SIZE)); | |
1da177e4 LT |
2304 | } |
2305 | ||
2306 | /* volume_info.password is freed above when existing session found | |
2307 | (in which case it is not needed anymore) but when new sesion is created | |
2308 | the password ptr is put in the new session structure (in which case the | |
2309 | password will be freed at unmount time) */ | |
70fe7dc0 JL |
2310 | out: |
2311 | /* zero out password before freeing */ | |
2312 | if (volume_info.password != NULL) { | |
2313 | memset(volume_info.password, 0, strlen(volume_info.password)); | |
2314 | kfree(volume_info.password); | |
2315 | } | |
f99d49ad | 2316 | kfree(volume_info.UNC); |
2fe87f02 | 2317 | kfree(volume_info.prepath); |
1da177e4 LT |
2318 | FreeXid(xid); |
2319 | return rc; | |
2320 | } | |
2321 | ||
2322 | static int | |
2323 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 2324 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
2325 | const struct nls_table *nls_codepage) |
2326 | { | |
2327 | struct smb_hdr *smb_buffer; | |
2328 | struct smb_hdr *smb_buffer_response; | |
2329 | SESSION_SETUP_ANDX *pSMB; | |
2330 | SESSION_SETUP_ANDX *pSMBr; | |
2331 | char *bcc_ptr; | |
2332 | char *user; | |
2333 | char *domain; | |
2334 | int rc = 0; | |
2335 | int remaining_words = 0; | |
2336 | int bytes_returned = 0; | |
2337 | int len; | |
2338 | __u32 capabilities; | |
2339 | __u16 count; | |
2340 | ||
eeac8047 | 2341 | cFYI(1, ("In sesssetup")); |
4523cc30 | 2342 | if (ses == NULL) |
1da177e4 LT |
2343 | return -EINVAL; |
2344 | user = ses->userName; | |
2345 | domain = ses->domainName; | |
2346 | smb_buffer = cifs_buf_get(); | |
582d21e5 SF |
2347 | |
2348 | if (smb_buffer == NULL) | |
1da177e4 | 2349 | return -ENOMEM; |
582d21e5 | 2350 | |
1da177e4 LT |
2351 | smb_buffer_response = smb_buffer; |
2352 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2353 | ||
2354 | /* send SMBsessionSetup here */ | |
2355 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2356 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2357 | ||
1982c344 | 2358 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2359 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2360 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2361 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2362 | ||
50c2f753 SF |
2363 | if (ses->server->secMode & |
2364 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
2365 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2366 | ||
2367 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2368 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2369 | if (ses->capabilities & CAP_UNICODE) { | |
2370 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2371 | capabilities |= CAP_UNICODE; | |
2372 | } | |
2373 | if (ses->capabilities & CAP_STATUS32) { | |
2374 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2375 | capabilities |= CAP_STATUS32; | |
2376 | } | |
2377 | if (ses->capabilities & CAP_DFS) { | |
2378 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2379 | capabilities |= CAP_DFS; | |
2380 | } | |
2381 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2382 | ||
50c2f753 | 2383 | pSMB->req_no_secext.CaseInsensitivePasswordLength = |
7c7b25bc | 2384 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2385 | |
2386 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2387 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2388 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2389 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2390 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2391 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2392 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2393 | |
2394 | if (ses->capabilities & CAP_UNICODE) { | |
2395 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2396 | *bcc_ptr = 0; | |
2397 | bcc_ptr++; | |
2398 | } | |
4523cc30 | 2399 | if (user == NULL) |
3979877e | 2400 | bytes_returned = 0; /* skip null user */ |
50c2f753 | 2401 | else |
1da177e4 | 2402 | bytes_returned = |
50c2f753 | 2403 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2404 | nls_codepage); |
2405 | /* convert number of 16 bit words to bytes */ | |
2406 | bcc_ptr += 2 * bytes_returned; | |
2407 | bcc_ptr += 2; /* trailing null */ | |
2408 | if (domain == NULL) | |
2409 | bytes_returned = | |
e89dc920 | 2410 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2411 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2412 | else | |
2413 | bytes_returned = | |
e89dc920 | 2414 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2415 | nls_codepage); |
2416 | bcc_ptr += 2 * bytes_returned; | |
2417 | bcc_ptr += 2; | |
2418 | bytes_returned = | |
e89dc920 | 2419 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2420 | 32, nls_codepage); |
2421 | bcc_ptr += 2 * bytes_returned; | |
2422 | bytes_returned = | |
e9ff3990 | 2423 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, |
1da177e4 LT |
2424 | 32, nls_codepage); |
2425 | bcc_ptr += 2 * bytes_returned; | |
2426 | bcc_ptr += 2; | |
2427 | bytes_returned = | |
e89dc920 | 2428 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2429 | 64, nls_codepage); |
2430 | bcc_ptr += 2 * bytes_returned; | |
2431 | bcc_ptr += 2; | |
2432 | } else { | |
50c2f753 | 2433 | if (user != NULL) { |
1da177e4 LT |
2434 | strncpy(bcc_ptr, user, 200); |
2435 | bcc_ptr += strnlen(user, 200); | |
2436 | } | |
2437 | *bcc_ptr = 0; | |
2438 | bcc_ptr++; | |
2439 | if (domain == NULL) { | |
2440 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2441 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2442 | } else { | |
2443 | strncpy(bcc_ptr, domain, 64); | |
2444 | bcc_ptr += strnlen(domain, 64); | |
2445 | *bcc_ptr = 0; | |
2446 | bcc_ptr++; | |
2447 | } | |
2448 | strcpy(bcc_ptr, "Linux version "); | |
2449 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2450 | strcpy(bcc_ptr, utsname()->release); |
2451 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2452 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2453 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2454 | } | |
2455 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2456 | smb_buffer->smb_buf_length += count; | |
2457 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2458 | ||
2459 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2460 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2461 | if (rc) { |
2462 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2463 | } else if ((smb_buffer_response->WordCount == 3) | |
2464 | || (smb_buffer_response->WordCount == 4)) { | |
2465 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2466 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2467 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2468 | cFYI(1, (" Guest login")); /* BB mark SesInfo struct? */ |
2469 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format | |
2470 | (little endian) */ | |
1da177e4 | 2471 | cFYI(1, ("UID = %d ", ses->Suid)); |
50c2f753 SF |
2472 | /* response can have either 3 or 4 word count - Samba sends 3 */ |
2473 | bcc_ptr = pByteArea(smb_buffer_response); | |
1da177e4 LT |
2474 | if ((pSMBr->resp.hdr.WordCount == 3) |
2475 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2476 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2477 | if (pSMBr->resp.hdr.WordCount == 4) | |
2478 | bcc_ptr += blob_len; | |
2479 | ||
2480 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2481 | if ((long) (bcc_ptr) % 2) { | |
2482 | remaining_words = | |
50c2f753 SF |
2483 | (BCC(smb_buffer_response) - 1) / 2; |
2484 | /* Unicode strings must be word | |
2485 | aligned */ | |
2486 | bcc_ptr++; | |
1da177e4 LT |
2487 | } else { |
2488 | remaining_words = | |
2489 | BCC(smb_buffer_response) / 2; | |
2490 | } | |
2491 | len = | |
2492 | UniStrnlen((wchar_t *) bcc_ptr, | |
2493 | remaining_words - 1); | |
2494 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2495 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2496 | terminating last Unicode string in response */ | |
fb8c4b14 | 2497 | if (ses->serverOS) |
a424f8bf | 2498 | kfree(ses->serverOS); |
50c2f753 SF |
2499 | ses->serverOS = kzalloc(2 * (len + 1), |
2500 | GFP_KERNEL); | |
fb8c4b14 | 2501 | if (ses->serverOS == NULL) |
433dc24f | 2502 | goto sesssetup_nomem; |
1da177e4 | 2503 | cifs_strfromUCS_le(ses->serverOS, |
50c2f753 SF |
2504 | (__le16 *)bcc_ptr, |
2505 | len, nls_codepage); | |
1da177e4 LT |
2506 | bcc_ptr += 2 * (len + 1); |
2507 | remaining_words -= len + 1; | |
2508 | ses->serverOS[2 * len] = 0; | |
2509 | ses->serverOS[1 + (2 * len)] = 0; | |
2510 | if (remaining_words > 0) { | |
2511 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2512 | remaining_words-1); | |
cd49b492 | 2513 | kfree(ses->serverNOS); |
50c2f753 SF |
2514 | ses->serverNOS = kzalloc(2 * (len + 1), |
2515 | GFP_KERNEL); | |
fb8c4b14 | 2516 | if (ses->serverNOS == NULL) |
433dc24f | 2517 | goto sesssetup_nomem; |
1da177e4 | 2518 | cifs_strfromUCS_le(ses->serverNOS, |
50c2f753 SF |
2519 | (__le16 *)bcc_ptr, |
2520 | len, nls_codepage); | |
1da177e4 LT |
2521 | bcc_ptr += 2 * (len + 1); |
2522 | ses->serverNOS[2 * len] = 0; | |
2523 | ses->serverNOS[1 + (2 * len)] = 0; | |
fb8c4b14 | 2524 | if (strncmp(ses->serverNOS, |
50c2f753 | 2525 | "NT LAN Manager 4", 16) == 0) { |
467a8f8d | 2526 | cFYI(1, ("NT4 server")); |
1da177e4 LT |
2527 | ses->flags |= CIFS_SES_NT4; |
2528 | } | |
2529 | remaining_words -= len + 1; | |
2530 | if (remaining_words > 0) { | |
433dc24f | 2531 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
50c2f753 SF |
2532 | /* last string is not always null terminated |
2533 | (for e.g. for Windows XP & 2000) */ | |
fb8c4b14 | 2534 | if (ses->serverDomain) |
a424f8bf | 2535 | kfree(ses->serverDomain); |
1da177e4 | 2536 | ses->serverDomain = |
50c2f753 SF |
2537 | kzalloc(2*(len+1), |
2538 | GFP_KERNEL); | |
fb8c4b14 | 2539 | if (ses->serverDomain == NULL) |
433dc24f | 2540 | goto sesssetup_nomem; |
1da177e4 | 2541 | cifs_strfromUCS_le(ses->serverDomain, |
50c2f753 SF |
2542 | (__le16 *)bcc_ptr, |
2543 | len, nls_codepage); | |
1da177e4 LT |
2544 | bcc_ptr += 2 * (len + 1); |
2545 | ses->serverDomain[2*len] = 0; | |
2546 | ses->serverDomain[1+(2*len)] = 0; | |
50c2f753 SF |
2547 | } else { /* else no more room so create |
2548 | dummy domain string */ | |
fb8c4b14 | 2549 | if (ses->serverDomain) |
a424f8bf | 2550 | kfree(ses->serverDomain); |
50c2f753 | 2551 | ses->serverDomain = |
e915fc49 | 2552 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2553 | } |
50c2f753 SF |
2554 | } else { /* no room so create dummy domain |
2555 | and NOS string */ | |
2556 | ||
433dc24f SF |
2557 | /* if these kcallocs fail not much we |
2558 | can do, but better to not fail the | |
2559 | sesssetup itself */ | |
cd49b492 | 2560 | kfree(ses->serverDomain); |
1da177e4 | 2561 | ses->serverDomain = |
e915fc49 | 2562 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2563 | kfree(ses->serverNOS); |
1da177e4 | 2564 | ses->serverNOS = |
e915fc49 | 2565 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2566 | } |
2567 | } else { /* ASCII */ | |
2568 | len = strnlen(bcc_ptr, 1024); | |
2569 | if (((long) bcc_ptr + len) - (long) | |
2570 | pByteArea(smb_buffer_response) | |
2571 | <= BCC(smb_buffer_response)) { | |
cd49b492 | 2572 | kfree(ses->serverOS); |
50c2f753 SF |
2573 | ses->serverOS = kzalloc(len + 1, |
2574 | GFP_KERNEL); | |
fb8c4b14 | 2575 | if (ses->serverOS == NULL) |
433dc24f | 2576 | goto sesssetup_nomem; |
50c2f753 | 2577 | strncpy(ses->serverOS, bcc_ptr, len); |
1da177e4 LT |
2578 | |
2579 | bcc_ptr += len; | |
50c2f753 SF |
2580 | /* null terminate the string */ |
2581 | bcc_ptr[0] = 0; | |
1da177e4 LT |
2582 | bcc_ptr++; |
2583 | ||
2584 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2585 | kfree(ses->serverNOS); |
50c2f753 SF |
2586 | ses->serverNOS = kzalloc(len + 1, |
2587 | GFP_KERNEL); | |
fb8c4b14 | 2588 | if (ses->serverNOS == NULL) |
433dc24f | 2589 | goto sesssetup_nomem; |
1da177e4 LT |
2590 | strncpy(ses->serverNOS, bcc_ptr, len); |
2591 | bcc_ptr += len; | |
2592 | bcc_ptr[0] = 0; | |
2593 | bcc_ptr++; | |
2594 | ||
2595 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 2596 | if (ses->serverDomain) |
a424f8bf | 2597 | kfree(ses->serverDomain); |
50c2f753 SF |
2598 | ses->serverDomain = kzalloc(len + 1, |
2599 | GFP_KERNEL); | |
fb8c4b14 | 2600 | if (ses->serverDomain == NULL) |
433dc24f | 2601 | goto sesssetup_nomem; |
50c2f753 SF |
2602 | strncpy(ses->serverDomain, bcc_ptr, |
2603 | len); | |
1da177e4 LT |
2604 | bcc_ptr += len; |
2605 | bcc_ptr[0] = 0; | |
2606 | bcc_ptr++; | |
2607 | } else | |
2608 | cFYI(1, | |
50c2f753 SF |
2609 | ("Variable field of length %d " |
2610 | "extends beyond end of smb ", | |
1da177e4 LT |
2611 | len)); |
2612 | } | |
2613 | } else { | |
2614 | cERROR(1, | |
50c2f753 SF |
2615 | (" Security Blob Length extends beyond " |
2616 | "end of SMB")); | |
1da177e4 LT |
2617 | } |
2618 | } else { | |
2619 | cERROR(1, | |
2620 | (" Invalid Word count %d: ", | |
2621 | smb_buffer_response->WordCount)); | |
2622 | rc = -EIO; | |
2623 | } | |
433dc24f SF |
2624 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2625 | since that could make reconnection harder, and | |
2626 | reconnection might be needed to free memory */ | |
a8a11d39 | 2627 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2628 | |
2629 | return rc; | |
2630 | } | |
2631 | ||
1da177e4 LT |
2632 | static int |
2633 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
4b18f2a9 | 2634 | struct cifsSesInfo *ses, bool *pNTLMv2_flag, |
1da177e4 LT |
2635 | const struct nls_table *nls_codepage) |
2636 | { | |
2637 | struct smb_hdr *smb_buffer; | |
2638 | struct smb_hdr *smb_buffer_response; | |
2639 | SESSION_SETUP_ANDX *pSMB; | |
2640 | SESSION_SETUP_ANDX *pSMBr; | |
2641 | char *bcc_ptr; | |
2642 | char *domain; | |
2643 | int rc = 0; | |
2644 | int remaining_words = 0; | |
2645 | int bytes_returned = 0; | |
2646 | int len; | |
6345a3a8 | 2647 | int SecurityBlobLength = sizeof(NEGOTIATE_MESSAGE); |
1da177e4 LT |
2648 | PNEGOTIATE_MESSAGE SecurityBlob; |
2649 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2650 | __u32 negotiate_flags, capabilities; | |
2651 | __u16 count; | |
2652 | ||
12b3b8ff | 2653 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
fb8c4b14 | 2654 | if (ses == NULL) |
1da177e4 LT |
2655 | return -EINVAL; |
2656 | domain = ses->domainName; | |
4b18f2a9 | 2657 | *pNTLMv2_flag = false; |
1da177e4 LT |
2658 | smb_buffer = cifs_buf_get(); |
2659 | if (smb_buffer == NULL) { | |
2660 | return -ENOMEM; | |
2661 | } | |
2662 | smb_buffer_response = smb_buffer; | |
2663 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2664 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2665 | ||
2666 | /* send SMBsessionSetup here */ | |
2667 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2668 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2669 | |
2670 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2671 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2672 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2673 | ||
2674 | pSMB->req.AndXCommand = 0xFF; | |
2675 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2676 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2677 | ||
fb8c4b14 | 2678 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2679 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2680 | ||
2681 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2682 | CAP_EXTENDED_SECURITY; | |
2683 | if (ses->capabilities & CAP_UNICODE) { | |
2684 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2685 | capabilities |= CAP_UNICODE; | |
2686 | } | |
2687 | if (ses->capabilities & CAP_STATUS32) { | |
2688 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2689 | capabilities |= CAP_STATUS32; | |
2690 | } | |
2691 | if (ses->capabilities & CAP_DFS) { | |
2692 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2693 | capabilities |= CAP_DFS; | |
2694 | } | |
2695 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2696 | ||
2697 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2698 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2699 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2700 | SecurityBlob->MessageType = NtLmNegotiate; | |
2701 | negotiate_flags = | |
2702 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2703 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2704 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 | 2705 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
fb8c4b14 | 2706 | if (sign_CIFS_PDUs) |
1da177e4 | 2707 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 2708 | /* if (ntlmv2_support) |
3979877e | 2709 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ |
1da177e4 LT |
2710 | /* setup pointers to domain name and workstation name */ |
2711 | bcc_ptr += SecurityBlobLength; | |
2712 | ||
2713 | SecurityBlob->WorkstationName.Buffer = 0; | |
2714 | SecurityBlob->WorkstationName.Length = 0; | |
2715 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2716 | ||
12b3b8ff SF |
2717 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2718 | along with username on auth request (ie the response to challenge) */ | |
2719 | SecurityBlob->DomainName.Buffer = 0; | |
2720 | SecurityBlob->DomainName.Length = 0; | |
2721 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2722 | if (ses->capabilities & CAP_UNICODE) { |
2723 | if ((long) bcc_ptr % 2) { | |
2724 | *bcc_ptr = 0; | |
2725 | bcc_ptr++; | |
2726 | } | |
2727 | ||
2728 | bytes_returned = | |
e89dc920 | 2729 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2730 | 32, nls_codepage); |
2731 | bcc_ptr += 2 * bytes_returned; | |
2732 | bytes_returned = | |
e9ff3990 | 2733 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2734 | nls_codepage); |
2735 | bcc_ptr += 2 * bytes_returned; | |
2736 | bcc_ptr += 2; /* null terminate Linux version */ | |
2737 | bytes_returned = | |
e89dc920 | 2738 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2739 | 64, nls_codepage); |
2740 | bcc_ptr += 2 * bytes_returned; | |
2741 | *(bcc_ptr + 1) = 0; | |
2742 | *(bcc_ptr + 2) = 0; | |
2743 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2744 | *(bcc_ptr + 1) = 0; | |
2745 | *(bcc_ptr + 2) = 0; | |
2746 | bcc_ptr += 2; /* null domain */ | |
2747 | } else { /* ASCII */ | |
2748 | strcpy(bcc_ptr, "Linux version "); | |
2749 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2750 | strcpy(bcc_ptr, utsname()->release); |
2751 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2752 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2753 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2754 | bcc_ptr++; /* empty domain field */ | |
2755 | *bcc_ptr = 0; | |
2756 | } | |
2757 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2758 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2759 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2760 | smb_buffer->smb_buf_length += count; | |
2761 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2762 | ||
2763 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2764 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2765 | |
2766 | if (smb_buffer_response->Status.CifsError == | |
2767 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2768 | rc = 0; | |
2769 | ||
2770 | if (rc) { | |
2771 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2772 | } else if ((smb_buffer_response->WordCount == 3) | |
2773 | || (smb_buffer_response->WordCount == 4)) { | |
2774 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2775 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2776 | ||
2777 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2778 | cFYI(1, (" Guest login")); |
2779 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
1da177e4 | 2780 | |
50c2f753 SF |
2781 | bcc_ptr = pByteArea(smb_buffer_response); |
2782 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
2783 | |
2784 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2785 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2786 | cFYI(1, | |
2787 | ("Unexpected NTLMSSP message type received %d", | |
2788 | SecurityBlob2->MessageType)); | |
2789 | } else if (ses) { | |
50c2f753 | 2790 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ |
12b3b8ff | 2791 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2792 | if ((pSMBr->resp.hdr.WordCount == 3) |
2793 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2794 | && (blob_len < | |
2795 | pSMBr->resp.ByteCount))) { | |
2796 | ||
2797 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2798 | bcc_ptr += blob_len; | |
12b3b8ff | 2799 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2800 | blob_len)); |
2801 | } | |
2802 | ||
12b3b8ff | 2803 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2804 | |
2805 | memcpy(ses->server->cryptKey, | |
2806 | SecurityBlob2->Challenge, | |
2807 | CIFS_CRYPTO_KEY_SIZE); | |
50c2f753 | 2808 | if (SecurityBlob2->NegotiateFlags & |
12b3b8ff | 2809 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) |
4b18f2a9 | 2810 | *pNTLMv2_flag = true; |
1da177e4 | 2811 | |
50c2f753 SF |
2812 | if ((SecurityBlob2->NegotiateFlags & |
2813 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
1da177e4 | 2814 | || (sign_CIFS_PDUs > 1)) |
50c2f753 SF |
2815 | ses->server->secMode |= |
2816 | SECMODE_SIGN_REQUIRED; | |
2817 | if ((SecurityBlob2->NegotiateFlags & | |
1da177e4 | 2818 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) |
50c2f753 | 2819 | ses->server->secMode |= |
1da177e4 LT |
2820 | SECMODE_SIGN_ENABLED; |
2821 | ||
2822 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2823 | if ((long) (bcc_ptr) % 2) { | |
2824 | remaining_words = | |
2825 | (BCC(smb_buffer_response) | |
2826 | - 1) / 2; | |
50c2f753 SF |
2827 | /* Must word align unicode strings */ |
2828 | bcc_ptr++; | |
1da177e4 LT |
2829 | } else { |
2830 | remaining_words = | |
2831 | BCC | |
2832 | (smb_buffer_response) / 2; | |
2833 | } | |
2834 | len = | |
2835 | UniStrnlen((wchar_t *) bcc_ptr, | |
2836 | remaining_words - 1); | |
2837 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2838 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2839 | terminating last Unicode string in response */ | |
fb8c4b14 | 2840 | if (ses->serverOS) |
a424f8bf | 2841 | kfree(ses->serverOS); |
1da177e4 | 2842 | ses->serverOS = |
e915fc49 | 2843 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2844 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2845 | (__le16 *) |
1da177e4 LT |
2846 | bcc_ptr, len, |
2847 | nls_codepage); | |
2848 | bcc_ptr += 2 * (len + 1); | |
2849 | remaining_words -= len + 1; | |
2850 | ses->serverOS[2 * len] = 0; | |
2851 | ses->serverOS[1 + (2 * len)] = 0; | |
2852 | if (remaining_words > 0) { | |
2853 | len = UniStrnlen((wchar_t *) | |
2854 | bcc_ptr, | |
2855 | remaining_words | |
2856 | - 1); | |
cd49b492 | 2857 | kfree(ses->serverNOS); |
1da177e4 | 2858 | ses->serverNOS = |
e915fc49 | 2859 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2860 | GFP_KERNEL); |
2861 | cifs_strfromUCS_le(ses-> | |
2862 | serverNOS, | |
e89dc920 | 2863 | (__le16 *) |
1da177e4 LT |
2864 | bcc_ptr, |
2865 | len, | |
2866 | nls_codepage); | |
2867 | bcc_ptr += 2 * (len + 1); | |
2868 | ses->serverNOS[2 * len] = 0; | |
2869 | ses->serverNOS[1 + | |
2870 | (2 * len)] = 0; | |
2871 | remaining_words -= len + 1; | |
2872 | if (remaining_words > 0) { | |
50c2f753 SF |
2873 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
2874 | /* last string not always null terminated | |
2875 | (for e.g. for Windows XP & 2000) */ | |
cd49b492 | 2876 | kfree(ses->serverDomain); |
1da177e4 | 2877 | ses->serverDomain = |
e915fc49 | 2878 | kzalloc(2 * |
1da177e4 LT |
2879 | (len + |
2880 | 1), | |
2881 | GFP_KERNEL); | |
2882 | cifs_strfromUCS_le | |
e89dc920 SF |
2883 | (ses->serverDomain, |
2884 | (__le16 *)bcc_ptr, | |
2885 | len, nls_codepage); | |
1da177e4 LT |
2886 | bcc_ptr += |
2887 | 2 * (len + 1); | |
e89dc920 | 2888 | ses->serverDomain[2*len] |
1da177e4 | 2889 | = 0; |
e89dc920 SF |
2890 | ses->serverDomain |
2891 | [1 + (2 * len)] | |
1da177e4 LT |
2892 | = 0; |
2893 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 2894 | else { |
cd49b492 | 2895 | kfree(ses->serverDomain); |
1da177e4 | 2896 | ses->serverDomain = |
e915fc49 | 2897 | kzalloc(2, |
1da177e4 | 2898 | GFP_KERNEL); |
a424f8bf | 2899 | } |
1da177e4 | 2900 | } else { /* no room so create dummy domain and NOS string */ |
cd49b492 | 2901 | kfree(ses->serverDomain); |
1da177e4 | 2902 | ses->serverDomain = |
e915fc49 | 2903 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2904 | kfree(ses->serverNOS); |
1da177e4 | 2905 | ses->serverNOS = |
e915fc49 | 2906 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2907 | } |
2908 | } else { /* ASCII */ | |
2909 | len = strnlen(bcc_ptr, 1024); | |
2910 | if (((long) bcc_ptr + len) - (long) | |
2911 | pByteArea(smb_buffer_response) | |
2912 | <= BCC(smb_buffer_response)) { | |
fb8c4b14 | 2913 | if (ses->serverOS) |
a424f8bf | 2914 | kfree(ses->serverOS); |
1da177e4 | 2915 | ses->serverOS = |
e915fc49 | 2916 | kzalloc(len + 1, |
1da177e4 LT |
2917 | GFP_KERNEL); |
2918 | strncpy(ses->serverOS, | |
2919 | bcc_ptr, len); | |
2920 | ||
2921 | bcc_ptr += len; | |
2922 | bcc_ptr[0] = 0; /* null terminate string */ | |
2923 | bcc_ptr++; | |
2924 | ||
2925 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2926 | kfree(ses->serverNOS); |
1da177e4 | 2927 | ses->serverNOS = |
e915fc49 | 2928 | kzalloc(len + 1, |
1da177e4 LT |
2929 | GFP_KERNEL); |
2930 | strncpy(ses->serverNOS, bcc_ptr, len); | |
2931 | bcc_ptr += len; | |
2932 | bcc_ptr[0] = 0; | |
2933 | bcc_ptr++; | |
2934 | ||
2935 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2936 | kfree(ses->serverDomain); |
1da177e4 | 2937 | ses->serverDomain = |
e915fc49 | 2938 | kzalloc(len + 1, |
1da177e4 | 2939 | GFP_KERNEL); |
50c2f753 SF |
2940 | strncpy(ses->serverDomain, |
2941 | bcc_ptr, len); | |
1da177e4 LT |
2942 | bcc_ptr += len; |
2943 | bcc_ptr[0] = 0; | |
2944 | bcc_ptr++; | |
2945 | } else | |
2946 | cFYI(1, | |
63135e08 SF |
2947 | ("field of length %d " |
2948 | "extends beyond end of smb", | |
1da177e4 LT |
2949 | len)); |
2950 | } | |
2951 | } else { | |
50c2f753 SF |
2952 | cERROR(1, ("Security Blob Length extends beyond" |
2953 | " end of SMB")); | |
1da177e4 LT |
2954 | } |
2955 | } else { | |
2956 | cERROR(1, ("No session structure passed in.")); | |
2957 | } | |
2958 | } else { | |
2959 | cERROR(1, | |
5815449d | 2960 | (" Invalid Word count %d:", |
1da177e4 LT |
2961 | smb_buffer_response->WordCount)); |
2962 | rc = -EIO; | |
2963 | } | |
2964 | ||
a8a11d39 | 2965 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2966 | |
2967 | return rc; | |
2968 | } | |
2969 | static int | |
2970 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
4b18f2a9 | 2971 | char *ntlm_session_key, bool ntlmv2_flag, |
6345a3a8 | 2972 | const struct nls_table *nls_codepage) |
1da177e4 LT |
2973 | { |
2974 | struct smb_hdr *smb_buffer; | |
2975 | struct smb_hdr *smb_buffer_response; | |
2976 | SESSION_SETUP_ANDX *pSMB; | |
2977 | SESSION_SETUP_ANDX *pSMBr; | |
2978 | char *bcc_ptr; | |
2979 | char *user; | |
2980 | char *domain; | |
2981 | int rc = 0; | |
2982 | int remaining_words = 0; | |
2983 | int bytes_returned = 0; | |
2984 | int len; | |
6345a3a8 | 2985 | int SecurityBlobLength = sizeof(AUTHENTICATE_MESSAGE); |
1da177e4 LT |
2986 | PAUTHENTICATE_MESSAGE SecurityBlob; |
2987 | __u32 negotiate_flags, capabilities; | |
2988 | __u16 count; | |
2989 | ||
2990 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
fb8c4b14 | 2991 | if (ses == NULL) |
1da177e4 LT |
2992 | return -EINVAL; |
2993 | user = ses->userName; | |
2994 | domain = ses->domainName; | |
2995 | smb_buffer = cifs_buf_get(); | |
2996 | if (smb_buffer == NULL) { | |
2997 | return -ENOMEM; | |
2998 | } | |
2999 | smb_buffer_response = smb_buffer; | |
6345a3a8 CG |
3000 | pSMB = (SESSION_SETUP_ANDX *)smb_buffer; |
3001 | pSMBr = (SESSION_SETUP_ANDX *)smb_buffer_response; | |
1da177e4 LT |
3002 | |
3003 | /* send SMBsessionSetup here */ | |
3004 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
3005 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
3006 | |
3007 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3008 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
3009 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
3010 | pSMB->req.AndXCommand = 0xFF; | |
3011 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
3012 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
3013 | ||
3014 | pSMB->req.hdr.Uid = ses->Suid; | |
3015 | ||
fb8c4b14 | 3016 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3017 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3018 | ||
3019 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
6345a3a8 | 3020 | CAP_EXTENDED_SECURITY; |
1da177e4 LT |
3021 | if (ses->capabilities & CAP_UNICODE) { |
3022 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3023 | capabilities |= CAP_UNICODE; | |
3024 | } | |
3025 | if (ses->capabilities & CAP_STATUS32) { | |
3026 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3027 | capabilities |= CAP_STATUS32; | |
3028 | } | |
3029 | if (ses->capabilities & CAP_DFS) { | |
3030 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3031 | capabilities |= CAP_DFS; | |
3032 | } | |
3033 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
3034 | ||
6345a3a8 CG |
3035 | bcc_ptr = (char *)&pSMB->req.SecurityBlob; |
3036 | SecurityBlob = (PAUTHENTICATE_MESSAGE)bcc_ptr; | |
1da177e4 LT |
3037 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); |
3038 | SecurityBlob->MessageType = NtLmAuthenticate; | |
3039 | bcc_ptr += SecurityBlobLength; | |
6345a3a8 CG |
3040 | negotiate_flags = NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | |
3041 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
3042 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
fb8c4b14 | 3043 | if (sign_CIFS_PDUs) |
1da177e4 | 3044 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 3045 | if (ntlmv2_flag) |
1da177e4 LT |
3046 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; |
3047 | ||
3048 | /* setup pointers to domain name and workstation name */ | |
3049 | ||
3050 | SecurityBlob->WorkstationName.Buffer = 0; | |
3051 | SecurityBlob->WorkstationName.Length = 0; | |
3052 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
3053 | SecurityBlob->SessionKey.Length = 0; | |
3054 | SecurityBlob->SessionKey.MaximumLength = 0; | |
3055 | SecurityBlob->SessionKey.Buffer = 0; | |
3056 | ||
3057 | SecurityBlob->LmChallengeResponse.Length = 0; | |
3058 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
3059 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
3060 | ||
3061 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 3062 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 3063 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
3064 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
3065 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
3066 | SecurityBlob->NtChallengeResponse.Buffer = |
3067 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
3068 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
3069 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
3070 | |
3071 | if (ses->capabilities & CAP_UNICODE) { | |
3072 | if (domain == NULL) { | |
3073 | SecurityBlob->DomainName.Buffer = 0; | |
3074 | SecurityBlob->DomainName.Length = 0; | |
3075 | SecurityBlob->DomainName.MaximumLength = 0; | |
3076 | } else { | |
77159b4d | 3077 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 | 3078 | nls_codepage); |
77159b4d | 3079 | ln *= 2; |
1da177e4 | 3080 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3081 | cpu_to_le16(ln); |
1da177e4 LT |
3082 | SecurityBlob->DomainName.Buffer = |
3083 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3084 | bcc_ptr += ln; |
3085 | SecurityBlobLength += ln; | |
3086 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3087 | } |
3088 | if (user == NULL) { | |
3089 | SecurityBlob->UserName.Buffer = 0; | |
3090 | SecurityBlob->UserName.Length = 0; | |
3091 | SecurityBlob->UserName.MaximumLength = 0; | |
3092 | } else { | |
77159b4d | 3093 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 | 3094 | nls_codepage); |
77159b4d | 3095 | ln *= 2; |
1da177e4 | 3096 | SecurityBlob->UserName.MaximumLength = |
77159b4d | 3097 | cpu_to_le16(ln); |
1da177e4 LT |
3098 | SecurityBlob->UserName.Buffer = |
3099 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3100 | bcc_ptr += ln; |
3101 | SecurityBlobLength += ln; | |
3102 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3103 | } |
3104 | ||
63135e08 SF |
3105 | /* SecurityBlob->WorkstationName.Length = |
3106 | cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); | |
1da177e4 | 3107 | SecurityBlob->WorkstationName.Length *= 2; |
63135e08 SF |
3108 | SecurityBlob->WorkstationName.MaximumLength = |
3109 | cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
3110 | SecurityBlob->WorkstationName.Buffer = | |
3111 | cpu_to_le32(SecurityBlobLength); | |
1da177e4 LT |
3112 | bcc_ptr += SecurityBlob->WorkstationName.Length; |
3113 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
63135e08 SF |
3114 | SecurityBlob->WorkstationName.Length = |
3115 | cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
1da177e4 LT |
3116 | |
3117 | if ((long) bcc_ptr % 2) { | |
3118 | *bcc_ptr = 0; | |
3119 | bcc_ptr++; | |
3120 | } | |
3121 | bytes_returned = | |
e89dc920 | 3122 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
3123 | 32, nls_codepage); |
3124 | bcc_ptr += 2 * bytes_returned; | |
3125 | bytes_returned = | |
e9ff3990 | 3126 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
3127 | nls_codepage); |
3128 | bcc_ptr += 2 * bytes_returned; | |
3129 | bcc_ptr += 2; /* null term version string */ | |
3130 | bytes_returned = | |
e89dc920 | 3131 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
3132 | 64, nls_codepage); |
3133 | bcc_ptr += 2 * bytes_returned; | |
3134 | *(bcc_ptr + 1) = 0; | |
3135 | *(bcc_ptr + 2) = 0; | |
3136 | bcc_ptr += 2; /* null terminate network opsys string */ | |
3137 | *(bcc_ptr + 1) = 0; | |
3138 | *(bcc_ptr + 2) = 0; | |
3139 | bcc_ptr += 2; /* null domain */ | |
3140 | } else { /* ASCII */ | |
3141 | if (domain == NULL) { | |
3142 | SecurityBlob->DomainName.Buffer = 0; | |
3143 | SecurityBlob->DomainName.Length = 0; | |
3144 | SecurityBlob->DomainName.MaximumLength = 0; | |
3145 | } else { | |
77159b4d | 3146 | __u16 ln; |
1da177e4 LT |
3147 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; |
3148 | strncpy(bcc_ptr, domain, 63); | |
77159b4d | 3149 | ln = strnlen(domain, 64); |
1da177e4 | 3150 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3151 | cpu_to_le16(ln); |
1da177e4 LT |
3152 | SecurityBlob->DomainName.Buffer = |
3153 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3154 | bcc_ptr += ln; |
3155 | SecurityBlobLength += ln; | |
3156 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3157 | } |
3158 | if (user == NULL) { | |
3159 | SecurityBlob->UserName.Buffer = 0; | |
3160 | SecurityBlob->UserName.Length = 0; | |
3161 | SecurityBlob->UserName.MaximumLength = 0; | |
3162 | } else { | |
77159b4d | 3163 | __u16 ln; |
1da177e4 | 3164 | strncpy(bcc_ptr, user, 63); |
77159b4d SF |
3165 | ln = strnlen(user, 64); |
3166 | SecurityBlob->UserName.MaximumLength = cpu_to_le16(ln); | |
1da177e4 | 3167 | SecurityBlob->UserName.Buffer = |
77159b4d SF |
3168 | cpu_to_le32(SecurityBlobLength); |
3169 | bcc_ptr += ln; | |
3170 | SecurityBlobLength += ln; | |
3171 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3172 | } |
3173 | /* BB fill in our workstation name if known BB */ | |
3174 | ||
3175 | strcpy(bcc_ptr, "Linux version "); | |
3176 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
3177 | strcpy(bcc_ptr, utsname()->release); |
3178 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
3179 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
3180 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
3181 | bcc_ptr++; /* null domain */ | |
3182 | *bcc_ptr = 0; | |
3183 | } | |
3184 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
3185 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
3186 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
3187 | smb_buffer->smb_buf_length += count; | |
3188 | pSMB->req.ByteCount = cpu_to_le16(count); | |
3189 | ||
3190 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 3191 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 | 3192 | if (rc) { |
6345a3a8 CG |
3193 | /* rc = map_smb_to_linux_error(smb_buffer_response) done in SendReceive now */ |
3194 | } else if ((smb_buffer_response->WordCount == 3) || | |
3195 | (smb_buffer_response->WordCount == 4)) { | |
1da177e4 | 3196 | __u16 action = le16_to_cpu(pSMBr->resp.Action); |
6345a3a8 | 3197 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); |
1da177e4 | 3198 | if (action & GUEST_LOGIN) |
50c2f753 SF |
3199 | cFYI(1, (" Guest login")); /* BB Should we set anything |
3200 | in SesInfo struct ? */ | |
3201 | /* if (SecurityBlob2->MessageType != NtLm??) { | |
3202 | cFYI("Unexpected message type on auth response is %d")); | |
3203 | } */ | |
3204 | ||
1da177e4 LT |
3205 | if (ses) { |
3206 | cFYI(1, | |
50c2f753 | 3207 | ("Check challenge UID %d vs auth response UID %d", |
1da177e4 | 3208 | ses->Suid, smb_buffer_response->Uid)); |
50c2f753 SF |
3209 | /* UID left in wire format */ |
3210 | ses->Suid = smb_buffer_response->Uid; | |
3211 | bcc_ptr = pByteArea(smb_buffer_response); | |
3212 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
3213 | if ((pSMBr->resp.hdr.WordCount == 3) |
3214 | || ((pSMBr->resp.hdr.WordCount == 4) | |
3215 | && (blob_len < | |
3216 | pSMBr->resp.ByteCount))) { | |
3217 | if (pSMBr->resp.hdr.WordCount == 4) { | |
3218 | bcc_ptr += | |
3219 | blob_len; | |
3220 | cFYI(1, | |
3221 | ("Security Blob Length %d ", | |
3222 | blob_len)); | |
3223 | } | |
3224 | ||
3225 | cFYI(1, | |
3226 | ("NTLMSSP response to Authenticate ")); | |
3227 | ||
3228 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3229 | if ((long) (bcc_ptr) % 2) { | |
3230 | remaining_words = | |
3231 | (BCC(smb_buffer_response) | |
3232 | - 1) / 2; | |
3233 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
3234 | } else { | |
3235 | remaining_words = BCC(smb_buffer_response) / 2; | |
3236 | } | |
77159b4d SF |
3237 | len = UniStrnlen((wchar_t *) bcc_ptr, |
3238 | remaining_words - 1); | |
1da177e4 LT |
3239 | /* We look for obvious messed up bcc or strings in response so we do not go off |
3240 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
3241 | terminating last Unicode string in response */ | |
fb8c4b14 | 3242 | if (ses->serverOS) |
08775834 | 3243 | kfree(ses->serverOS); |
1da177e4 | 3244 | ses->serverOS = |
e915fc49 | 3245 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 3246 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 3247 | (__le16 *) |
1da177e4 LT |
3248 | bcc_ptr, len, |
3249 | nls_codepage); | |
3250 | bcc_ptr += 2 * (len + 1); | |
3251 | remaining_words -= len + 1; | |
3252 | ses->serverOS[2 * len] = 0; | |
3253 | ses->serverOS[1 + (2 * len)] = 0; | |
3254 | if (remaining_words > 0) { | |
3255 | len = UniStrnlen((wchar_t *) | |
3256 | bcc_ptr, | |
3257 | remaining_words | |
3258 | - 1); | |
cd49b492 | 3259 | kfree(ses->serverNOS); |
1da177e4 | 3260 | ses->serverNOS = |
e915fc49 | 3261 | kzalloc(2 * (len + 1), |
1da177e4 LT |
3262 | GFP_KERNEL); |
3263 | cifs_strfromUCS_le(ses-> | |
3264 | serverNOS, | |
e89dc920 | 3265 | (__le16 *) |
1da177e4 LT |
3266 | bcc_ptr, |
3267 | len, | |
3268 | nls_codepage); | |
3269 | bcc_ptr += 2 * (len + 1); | |
3270 | ses->serverNOS[2 * len] = 0; | |
3271 | ses->serverNOS[1+(2*len)] = 0; | |
3272 | remaining_words -= len + 1; | |
3273 | if (remaining_words > 0) { | |
50c2f753 | 3274 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 3275 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ |
fb8c4b14 | 3276 | if (ses->serverDomain) |
a424f8bf | 3277 | kfree(ses->serverDomain); |
1da177e4 | 3278 | ses->serverDomain = |
e915fc49 | 3279 | kzalloc(2 * |
1da177e4 LT |
3280 | (len + |
3281 | 1), | |
3282 | GFP_KERNEL); | |
3283 | cifs_strfromUCS_le | |
3284 | (ses-> | |
3285 | serverDomain, | |
e89dc920 | 3286 | (__le16 *) |
1da177e4 LT |
3287 | bcc_ptr, len, |
3288 | nls_codepage); | |
3289 | bcc_ptr += | |
3290 | 2 * (len + 1); | |
3291 | ses-> | |
3292 | serverDomain[2 | |
3293 | * len] | |
3294 | = 0; | |
3295 | ses-> | |
3296 | serverDomain[1 | |
3297 | + | |
3298 | (2 | |
3299 | * | |
3300 | len)] | |
3301 | = 0; | |
3302 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 3303 | else { |
fb8c4b14 | 3304 | if (ses->serverDomain) |
a424f8bf | 3305 | kfree(ses->serverDomain); |
e915fc49 | 3306 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 3307 | } |
1da177e4 | 3308 | } else { /* no room so create dummy domain and NOS string */ |
fb8c4b14 | 3309 | if (ses->serverDomain) |
a424f8bf | 3310 | kfree(ses->serverDomain); |
e915fc49 | 3311 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 3312 | kfree(ses->serverNOS); |
e915fc49 | 3313 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3314 | } |
3315 | } else { /* ASCII */ | |
3316 | len = strnlen(bcc_ptr, 1024); | |
50c2f753 SF |
3317 | if (((long) bcc_ptr + len) - |
3318 | (long) pByteArea(smb_buffer_response) | |
63135e08 | 3319 | <= BCC(smb_buffer_response)) { |
fb8c4b14 | 3320 | if (ses->serverOS) |
a424f8bf | 3321 | kfree(ses->serverOS); |
77159b4d | 3322 | ses->serverOS = kzalloc(len + 1, GFP_KERNEL); |
1da177e4 LT |
3323 | strncpy(ses->serverOS,bcc_ptr, len); |
3324 | ||
3325 | bcc_ptr += len; | |
3326 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3327 | bcc_ptr++; | |
3328 | ||
3329 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3330 | kfree(ses->serverNOS); |
50c2f753 SF |
3331 | ses->serverNOS = kzalloc(len+1, |
3332 | GFP_KERNEL); | |
63135e08 SF |
3333 | strncpy(ses->serverNOS, |
3334 | bcc_ptr, len); | |
1da177e4 LT |
3335 | bcc_ptr += len; |
3336 | bcc_ptr[0] = 0; | |
3337 | bcc_ptr++; | |
3338 | ||
3339 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 3340 | if (ses->serverDomain) |
a424f8bf | 3341 | kfree(ses->serverDomain); |
63135e08 SF |
3342 | ses->serverDomain = |
3343 | kzalloc(len+1, | |
3344 | GFP_KERNEL); | |
3345 | strncpy(ses->serverDomain, | |
3346 | bcc_ptr, len); | |
1da177e4 LT |
3347 | bcc_ptr += len; |
3348 | bcc_ptr[0] = 0; | |
3349 | bcc_ptr++; | |
3350 | } else | |
6345a3a8 | 3351 | cFYI(1, ("field of length %d " |
63135e08 | 3352 | "extends beyond end of smb ", |
1da177e4 LT |
3353 | len)); |
3354 | } | |
3355 | } else { | |
6345a3a8 | 3356 | cERROR(1, ("Security Blob extends beyond end " |
63135e08 | 3357 | "of SMB")); |
1da177e4 LT |
3358 | } |
3359 | } else { | |
3360 | cERROR(1, ("No session structure passed in.")); | |
3361 | } | |
3362 | } else { | |
6345a3a8 | 3363 | cERROR(1, ("Invalid Word count %d: ", |
1da177e4 LT |
3364 | smb_buffer_response->WordCount)); |
3365 | rc = -EIO; | |
3366 | } | |
3367 | ||
a8a11d39 | 3368 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3369 | |
3370 | return rc; | |
3371 | } | |
3372 | ||
3373 | int | |
3374 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3375 | const char *tree, struct cifsTconInfo *tcon, | |
3376 | const struct nls_table *nls_codepage) | |
3377 | { | |
3378 | struct smb_hdr *smb_buffer; | |
3379 | struct smb_hdr *smb_buffer_response; | |
3380 | TCONX_REQ *pSMB; | |
3381 | TCONX_RSP *pSMBr; | |
3382 | unsigned char *bcc_ptr; | |
3383 | int rc = 0; | |
3384 | int length; | |
3385 | __u16 count; | |
3386 | ||
3387 | if (ses == NULL) | |
3388 | return -EIO; | |
3389 | ||
3390 | smb_buffer = cifs_buf_get(); | |
3391 | if (smb_buffer == NULL) { | |
3392 | return -ENOMEM; | |
3393 | } | |
3394 | smb_buffer_response = smb_buffer; | |
3395 | ||
3396 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3397 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3398 | |
3399 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3400 | smb_buffer->Uid = ses->Suid; |
3401 | pSMB = (TCONX_REQ *) smb_buffer; | |
3402 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3403 | ||
3404 | pSMB->AndXCommand = 0xFF; | |
3405 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3406 | bcc_ptr = &pSMB->Password[0]; |
fb8c4b14 | 3407 | if ((ses->server->secMode) & SECMODE_USER) { |
eeac8047 | 3408 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
7c7b25bc | 3409 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3410 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3411 | /* already aligned so no need to do it below */ |
eeac8047 | 3412 | } else { |
7c7b25bc | 3413 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3414 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3415 | specified as required (when that support is added to | |
3416 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3417 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3418 | by Samba (not sure whether other servers allow |
3419 | NTLMv2 password here) */ | |
7c7b25bc | 3420 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
50c2f753 | 3421 | if ((extended_security & CIFSSEC_MAY_LANMAN) && |
7c7b25bc SF |
3422 | (ses->server->secType == LANMAN)) |
3423 | calc_lanman_hash(ses, bcc_ptr); | |
3424 | else | |
3425 | #endif /* CIFS_WEAK_PW_HASH */ | |
eeac8047 SF |
3426 | SMBNTencrypt(ses->password, |
3427 | ses->server->cryptKey, | |
3428 | bcc_ptr); | |
3429 | ||
7c7b25bc | 3430 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
fb8c4b14 | 3431 | if (ses->capabilities & CAP_UNICODE) { |
7c7b25bc SF |
3432 | /* must align unicode strings */ |
3433 | *bcc_ptr = 0; /* null byte password */ | |
3434 | bcc_ptr++; | |
3435 | } | |
eeac8047 | 3436 | } |
1da177e4 | 3437 | |
50c2f753 | 3438 | if (ses->server->secMode & |
a878fb22 | 3439 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3440 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3441 | ||
3442 | if (ses->capabilities & CAP_STATUS32) { | |
3443 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3444 | } | |
3445 | if (ses->capabilities & CAP_DFS) { | |
3446 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3447 | } | |
3448 | if (ses->capabilities & CAP_UNICODE) { | |
3449 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3450 | length = | |
50c2f753 SF |
3451 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3452 | 6 /* max utf8 char length in bytes */ * | |
a878fb22 SF |
3453 | (/* server len*/ + 256 /* share len */), nls_codepage); |
3454 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3455 | bcc_ptr += 2; /* skip trailing null */ |
3456 | } else { /* ASCII */ | |
1da177e4 LT |
3457 | strcpy(bcc_ptr, tree); |
3458 | bcc_ptr += strlen(tree) + 1; | |
3459 | } | |
3460 | strcpy(bcc_ptr, "?????"); | |
3461 | bcc_ptr += strlen("?????"); | |
3462 | bcc_ptr += 1; | |
3463 | count = bcc_ptr - &pSMB->Password[0]; | |
3464 | pSMB->hdr.smb_buf_length += count; | |
3465 | pSMB->ByteCount = cpu_to_le16(count); | |
3466 | ||
133672ef SF |
3467 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, |
3468 | CIFS_STD_OP); | |
1da177e4 LT |
3469 | |
3470 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3471 | /* above now done in SendReceive */ | |
3472 | if ((rc == 0) && (tcon != NULL)) { | |
3473 | tcon->tidStatus = CifsGood; | |
3474 | tcon->tid = smb_buffer_response->Tid; | |
3475 | bcc_ptr = pByteArea(smb_buffer_response); | |
3476 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
50c2f753 | 3477 | /* skip service field (NB: this field is always ASCII) */ |
7f8ed420 SF |
3478 | if (length == 3) { |
3479 | if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') && | |
3480 | (bcc_ptr[2] == 'C')) { | |
3481 | cFYI(1, ("IPC connection")); | |
3482 | tcon->ipc = 1; | |
3483 | } | |
3484 | } else if (length == 2) { | |
3485 | if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) { | |
3486 | /* the most common case */ | |
3487 | cFYI(1, ("disk share connection")); | |
3488 | } | |
3489 | } | |
50c2f753 | 3490 | bcc_ptr += length + 1; |
1da177e4 LT |
3491 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
3492 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3493 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3494 | if ((bcc_ptr + (2 * length)) - | |
3495 | pByteArea(smb_buffer_response) <= | |
3496 | BCC(smb_buffer_response)) { | |
f99d49ad | 3497 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3498 | tcon->nativeFileSystem = |
e915fc49 | 3499 | kzalloc(length + 2, GFP_KERNEL); |
88f370a6 SF |
3500 | if (tcon->nativeFileSystem) |
3501 | cifs_strfromUCS_le( | |
3502 | tcon->nativeFileSystem, | |
3503 | (__le16 *) bcc_ptr, | |
3504 | length, nls_codepage); | |
1da177e4 LT |
3505 | bcc_ptr += 2 * length; |
3506 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3507 | bcc_ptr[1] = 0; | |
3508 | bcc_ptr += 2; | |
3509 | } | |
50c2f753 | 3510 | /* else do not bother copying these information fields*/ |
1da177e4 LT |
3511 | } else { |
3512 | length = strnlen(bcc_ptr, 1024); | |
3513 | if ((bcc_ptr + length) - | |
3514 | pByteArea(smb_buffer_response) <= | |
3515 | BCC(smb_buffer_response)) { | |
f99d49ad | 3516 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3517 | tcon->nativeFileSystem = |
e915fc49 | 3518 | kzalloc(length + 1, GFP_KERNEL); |
88f370a6 SF |
3519 | if (tcon->nativeFileSystem) |
3520 | strncpy(tcon->nativeFileSystem, bcc_ptr, | |
3521 | length); | |
1da177e4 | 3522 | } |
50c2f753 | 3523 | /* else do not bother copying these information fields*/ |
1da177e4 | 3524 | } |
fb8c4b14 | 3525 | if ((smb_buffer_response->WordCount == 3) || |
1a4e15a0 SF |
3526 | (smb_buffer_response->WordCount == 7)) |
3527 | /* field is in same location */ | |
3979877e SF |
3528 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
3529 | else | |
3530 | tcon->Flags = 0; | |
1da177e4 LT |
3531 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3532 | } else if ((rc == 0) && tcon == NULL) { | |
50c2f753 | 3533 | /* all we need to save for IPC$ connection */ |
1da177e4 LT |
3534 | ses->ipc_tid = smb_buffer_response->Tid; |
3535 | } | |
3536 | ||
a8a11d39 | 3537 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3538 | return rc; |
3539 | } | |
3540 | ||
3541 | int | |
3542 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3543 | { | |
3544 | int rc = 0; | |
3545 | int xid; | |
3546 | struct cifsSesInfo *ses = NULL; | |
3547 | struct task_struct *cifsd_task; | |
50c2f753 | 3548 | char *tmp; |
1da177e4 LT |
3549 | |
3550 | xid = GetXid(); | |
3551 | ||
3552 | if (cifs_sb->tcon) { | |
3553 | ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ | |
3554 | rc = CIFSSMBTDis(xid, cifs_sb->tcon); | |
3555 | if (rc == -EBUSY) { | |
3556 | FreeXid(xid); | |
3557 | return 0; | |
3558 | } | |
5d941ca6 | 3559 | DeleteTconOplockQEntries(cifs_sb->tcon); |
1da177e4 LT |
3560 | tconInfoFree(cifs_sb->tcon); |
3561 | if ((ses) && (ses->server)) { | |
3562 | /* save off task so we do not refer to ses later */ | |
3563 | cifsd_task = ses->server->tsk; | |
3564 | cFYI(1, ("About to do SMBLogoff ")); | |
3565 | rc = CIFSSMBLogoff(xid, ses); | |
3566 | if (rc == -EBUSY) { | |
3567 | FreeXid(xid); | |
3568 | return 0; | |
3569 | } else if (rc == -ESHUTDOWN) { | |
467a8f8d | 3570 | cFYI(1, ("Waking up socket by sending signal")); |
f7f7c31c | 3571 | if (cifsd_task) { |
50c2f753 | 3572 | force_sig(SIGKILL, cifsd_task); |
aaf737ad | 3573 | kthread_stop(cifsd_task); |
f191401f | 3574 | } |
1da177e4 LT |
3575 | rc = 0; |
3576 | } /* else - we have an smb session | |
3577 | left on this socket do not kill cifsd */ | |
3578 | } else | |
3579 | cFYI(1, ("No session or bad tcon")); | |
3580 | } | |
50c2f753 | 3581 | |
1da177e4 | 3582 | cifs_sb->tcon = NULL; |
2fe87f02 SF |
3583 | tmp = cifs_sb->prepath; |
3584 | cifs_sb->prepathlen = 0; | |
3585 | cifs_sb->prepath = NULL; | |
3586 | kfree(tmp); | |
1da177e4 LT |
3587 | if (ses) |
3588 | sesInfoFree(ses); | |
3589 | ||
3590 | FreeXid(xid); | |
88e7d705 | 3591 | return rc; |
50c2f753 | 3592 | } |
1da177e4 LT |
3593 | |
3594 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
50c2f753 | 3595 | struct nls_table *nls_info) |
1da177e4 LT |
3596 | { |
3597 | int rc = 0; | |
7c7b25bc | 3598 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
4b18f2a9 | 3599 | bool ntlmv2_flag = false; |
ad009ac9 | 3600 | int first_time = 0; |
cb7691b6 | 3601 | struct TCP_Server_Info *server = pSesInfo->server; |
1da177e4 LT |
3602 | |
3603 | /* what if server changes its buffer size after dropping the session? */ | |
cb7691b6 | 3604 | if (server->maxBuf == 0) /* no need to send on reconnect */ { |
1da177e4 | 3605 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
cb7691b6 JL |
3606 | if (rc == -EAGAIN) { |
3607 | /* retry only once on 1st time connection */ | |
1da177e4 | 3608 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
50c2f753 | 3609 | if (rc == -EAGAIN) |
1da177e4 LT |
3610 | rc = -EHOSTDOWN; |
3611 | } | |
fb8c4b14 | 3612 | if (rc == 0) { |
1da177e4 | 3613 | spin_lock(&GlobalMid_Lock); |
cb7691b6 JL |
3614 | if (server->tcpStatus != CifsExiting) |
3615 | server->tcpStatus = CifsGood; | |
1da177e4 LT |
3616 | else |
3617 | rc = -EHOSTDOWN; | |
3618 | spin_unlock(&GlobalMid_Lock); | |
3619 | ||
3620 | } | |
ad009ac9 | 3621 | first_time = 1; |
1da177e4 | 3622 | } |
26b994fa SF |
3623 | |
3624 | if (rc) | |
3625 | goto ss_err_exit; | |
3626 | ||
3627 | pSesInfo->flags = 0; | |
cb7691b6 | 3628 | pSesInfo->capabilities = server->capabilities; |
26b994fa SF |
3629 | if (linuxExtEnabled == 0) |
3630 | pSesInfo->capabilities &= (~CAP_UNIX); | |
ad009ac9 | 3631 | /* pSesInfo->sequence_number = 0;*/ |
26b994fa | 3632 | cFYI(1, ("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", |
cb7691b6 JL |
3633 | server->secMode, server->capabilities, server->timeAdj)); |
3634 | ||
26b994fa SF |
3635 | if (experimEnabled < 2) |
3636 | rc = CIFS_SessSetup(xid, pSesInfo, first_time, nls_info); | |
3637 | else if (extended_security | |
3638 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
cb7691b6 | 3639 | && (server->secType == NTLMSSP)) { |
26b994fa SF |
3640 | rc = -EOPNOTSUPP; |
3641 | } else if (extended_security | |
3642 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
cb7691b6 | 3643 | && (server->secType == RawNTLMSSP)) { |
26b994fa SF |
3644 | cFYI(1, ("NTLMSSP sesssetup")); |
3645 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, pSesInfo, &ntlmv2_flag, | |
3646 | nls_info); | |
3647 | if (!rc) { | |
3648 | if (ntlmv2_flag) { | |
3649 | char *v2_response; | |
3650 | cFYI(1, ("more secure NTLM ver2 hash")); | |
3651 | if (CalcNTLMv2_partial_mac_key(pSesInfo, | |
3652 | nls_info)) { | |
3653 | rc = -ENOMEM; | |
3654 | goto ss_err_exit; | |
3655 | } else | |
3656 | v2_response = kmalloc(16 + 64 /* blob*/, | |
3657 | GFP_KERNEL); | |
3658 | if (v2_response) { | |
3659 | CalcNTLMv2_response(pSesInfo, | |
3660 | v2_response); | |
3661 | /* if (first_time) | |
3662 | cifs_calculate_ntlmv2_mac_key */ | |
3663 | kfree(v2_response); | |
1da177e4 | 3664 | /* BB Put dummy sig in SessSetup PDU? */ |
1da177e4 | 3665 | } else { |
26b994fa SF |
3666 | rc = -ENOMEM; |
3667 | goto ss_err_exit; | |
1da177e4 | 3668 | } |
26b994fa SF |
3669 | |
3670 | } else { | |
3671 | SMBNTencrypt(pSesInfo->password, | |
cb7691b6 | 3672 | server->cryptKey, |
26b994fa SF |
3673 | ntlm_session_key); |
3674 | ||
3675 | if (first_time) | |
3676 | cifs_calculate_mac_key( | |
cb7691b6 | 3677 | &server->mac_signing_key, |
26b994fa SF |
3678 | ntlm_session_key, |
3679 | pSesInfo->password); | |
3680 | } | |
1da177e4 LT |
3681 | /* for better security the weaker lanman hash not sent |
3682 | in AuthSessSetup so we no longer calculate it */ | |
3683 | ||
26b994fa SF |
3684 | rc = CIFSNTLMSSPAuthSessSetup(xid, pSesInfo, |
3685 | ntlm_session_key, | |
3686 | ntlmv2_flag, | |
3687 | nls_info); | |
3688 | } | |
3689 | } else { /* old style NTLM 0.12 session setup */ | |
cb7691b6 | 3690 | SMBNTencrypt(pSesInfo->password, server->cryptKey, |
26b994fa | 3691 | ntlm_session_key); |
1da177e4 | 3692 | |
26b994fa | 3693 | if (first_time) |
cb7691b6 JL |
3694 | cifs_calculate_mac_key(&server->mac_signing_key, |
3695 | ntlm_session_key, | |
3696 | pSesInfo->password); | |
ad009ac9 | 3697 | |
26b994fa SF |
3698 | rc = CIFSSessSetup(xid, pSesInfo, ntlm_session_key, nls_info); |
3699 | } | |
3700 | if (rc) { | |
3701 | cERROR(1, ("Send error in SessSetup = %d", rc)); | |
3702 | } else { | |
3703 | cFYI(1, ("CIFS Session Established successfully")); | |
1da177e4 | 3704 | pSesInfo->status = CifsGood; |
1da177e4 | 3705 | } |
26b994fa | 3706 | |
1da177e4 LT |
3707 | ss_err_exit: |
3708 | return rc; | |
3709 | } | |
3710 |