]>
Commit | Line | Data |
---|---|---|
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 */ | |
2c1b8615 | 93 | bool nodfs:1; |
1da177e4 LT |
94 | unsigned int rsize; |
95 | unsigned int wsize; | |
96 | unsigned int sockopt; | |
97 | unsigned short int port; | |
fb8c4b14 | 98 | char *prepath; |
1da177e4 LT |
99 | }; |
100 | ||
fb8c4b14 | 101 | static int ipv4_connect(struct sockaddr_in *psin_server, |
1da177e4 | 102 | struct socket **csocket, |
fb8c4b14 SF |
103 | char *netb_name, |
104 | char *server_netb_name); | |
105 | static int ipv6_connect(struct sockaddr_in6 *psin_server, | |
1da177e4 LT |
106 | struct socket **csocket); |
107 | ||
108 | ||
fb8c4b14 | 109 | /* |
1da177e4 | 110 | * cifs tcp session reconnection |
fb8c4b14 | 111 | * |
1da177e4 LT |
112 | * mark tcp session as reconnecting so temporarily locked |
113 | * mark all smb sessions as reconnecting for tcp session | |
114 | * reconnect tcp session | |
115 | * wake up waiters on reconnection? - (not needed currently) | |
116 | */ | |
117 | ||
2cd646a2 | 118 | static int |
1da177e4 LT |
119 | cifs_reconnect(struct TCP_Server_Info *server) |
120 | { | |
121 | int rc = 0; | |
122 | struct list_head *tmp; | |
123 | struct cifsSesInfo *ses; | |
124 | struct cifsTconInfo *tcon; | |
fb8c4b14 | 125 | struct mid_q_entry *mid_entry; |
50c2f753 | 126 | |
1da177e4 | 127 | spin_lock(&GlobalMid_Lock); |
469ee614 | 128 | if (server->tcpStatus == CifsExiting) { |
fb8c4b14 | 129 | /* the demux thread will exit normally |
1da177e4 LT |
130 | next time through the loop */ |
131 | spin_unlock(&GlobalMid_Lock); | |
132 | return rc; | |
133 | } else | |
134 | server->tcpStatus = CifsNeedReconnect; | |
135 | spin_unlock(&GlobalMid_Lock); | |
136 | server->maxBuf = 0; | |
137 | ||
e4eb295d | 138 | cFYI(1, ("Reconnecting tcp session")); |
1da177e4 LT |
139 | |
140 | /* before reconnecting the tcp session, mark the smb session (uid) | |
141 | and the tid bad so they are not used until reconnected */ | |
142 | read_lock(&GlobalSMBSeslock); | |
143 | list_for_each(tmp, &GlobalSMBSessionList) { | |
144 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
145 | if (ses->server) { | |
146 | if (ses->server == server) { | |
147 | ses->status = CifsNeedReconnect; | |
148 | ses->ipc_tid = 0; | |
149 | } | |
150 | } | |
151 | /* else tcp and smb sessions need reconnection */ | |
152 | } | |
153 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
154 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); | |
ad8b15f0 | 155 | if ((tcon->ses) && (tcon->ses->server == server)) |
1da177e4 | 156 | tcon->tidStatus = CifsNeedReconnect; |
1da177e4 LT |
157 | } |
158 | read_unlock(&GlobalSMBSeslock); | |
159 | /* do not want to be sending data on a socket we are freeing */ | |
fb8c4b14 SF |
160 | down(&server->tcpSem); |
161 | if (server->ssocket) { | |
467a8f8d | 162 | cFYI(1, ("State: 0x%x Flags: 0x%lx", server->ssocket->state, |
1da177e4 | 163 | server->ssocket->flags)); |
91cf45f0 | 164 | kernel_sock_shutdown(server->ssocket, SHUT_WR); |
fb8c4b14 | 165 | cFYI(1, ("Post shutdown state: 0x%x Flags: 0x%lx", |
467a8f8d | 166 | server->ssocket->state, |
1da177e4 LT |
167 | server->ssocket->flags)); |
168 | sock_release(server->ssocket); | |
169 | server->ssocket = NULL; | |
170 | } | |
171 | ||
172 | spin_lock(&GlobalMid_Lock); | |
173 | list_for_each(tmp, &server->pending_mid_q) { | |
174 | mid_entry = list_entry(tmp, struct | |
175 | mid_q_entry, | |
176 | qhead); | |
ad8b15f0 | 177 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { |
09d1db5c SF |
178 | /* Mark other intransit requests as needing |
179 | retry so we do not immediately mark the | |
180 | session bad again (ie after we reconnect | |
181 | below) as they timeout too */ | |
ad8b15f0 | 182 | mid_entry->midState = MID_RETRY_NEEDED; |
1da177e4 LT |
183 | } |
184 | } | |
185 | spin_unlock(&GlobalMid_Lock); | |
fb8c4b14 | 186 | up(&server->tcpSem); |
1da177e4 | 187 | |
469ee614 JL |
188 | while ((server->tcpStatus != CifsExiting) && |
189 | (server->tcpStatus != CifsGood)) { | |
6c3d8909 | 190 | try_to_freeze(); |
fb8c4b14 SF |
191 | if (server->protocolType == IPV6) { |
192 | rc = ipv6_connect(&server->addr.sockAddr6, | |
193 | &server->ssocket); | |
1da177e4 | 194 | } else { |
fb8c4b14 | 195 | rc = ipv4_connect(&server->addr.sockAddr, |
1da177e4 | 196 | &server->ssocket, |
a10faeb2 SF |
197 | server->workstation_RFC1001_name, |
198 | server->server_RFC1001_name); | |
1da177e4 | 199 | } |
fb8c4b14 SF |
200 | if (rc) { |
201 | cFYI(1, ("reconnect error %d", rc)); | |
0cb766ae | 202 | msleep(3000); |
1da177e4 LT |
203 | } else { |
204 | atomic_inc(&tcpSesReconnectCount); | |
205 | spin_lock(&GlobalMid_Lock); | |
469ee614 | 206 | if (server->tcpStatus != CifsExiting) |
1da177e4 | 207 | server->tcpStatus = CifsGood; |
ad009ac9 | 208 | server->sequence_number = 0; |
fb8c4b14 | 209 | spin_unlock(&GlobalMid_Lock); |
1da177e4 LT |
210 | /* atomic_set(&server->inFlight,0);*/ |
211 | wake_up(&server->response_q); | |
212 | } | |
213 | } | |
214 | return rc; | |
215 | } | |
216 | ||
fb8c4b14 | 217 | /* |
e4eb295d SF |
218 | return codes: |
219 | 0 not a transact2, or all data present | |
220 | >0 transact2 with that much data missing | |
221 | -EINVAL = invalid transact2 | |
222 | ||
223 | */ | |
fb8c4b14 | 224 | static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) |
e4eb295d | 225 | { |
fb8c4b14 SF |
226 | struct smb_t2_rsp *pSMBt; |
227 | int total_data_size; | |
e4eb295d SF |
228 | int data_in_this_rsp; |
229 | int remaining; | |
230 | ||
fb8c4b14 | 231 | if (pSMB->Command != SMB_COM_TRANSACTION2) |
e4eb295d SF |
232 | return 0; |
233 | ||
fb8c4b14 SF |
234 | /* check for plausible wct, bcc and t2 data and parm sizes */ |
235 | /* check for parm and data offset going beyond end of smb */ | |
236 | if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
467a8f8d | 237 | cFYI(1, ("invalid transact2 word count")); |
e4eb295d SF |
238 | return -EINVAL; |
239 | } | |
240 | ||
241 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
242 | ||
243 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
244 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
245 | ||
246 | remaining = total_data_size - data_in_this_rsp; | |
247 | ||
fb8c4b14 | 248 | if (remaining == 0) |
e4eb295d | 249 | return 0; |
fb8c4b14 | 250 | else if (remaining < 0) { |
467a8f8d | 251 | cFYI(1, ("total data %d smaller than data in frame %d", |
e4eb295d SF |
252 | total_data_size, data_in_this_rsp)); |
253 | return -EINVAL; | |
254 | } else { | |
467a8f8d | 255 | cFYI(1, ("missing %d bytes from transact2, check next response", |
e4eb295d | 256 | remaining)); |
fb8c4b14 SF |
257 | if (total_data_size > maxBufSize) { |
258 | cERROR(1, ("TotalDataSize %d is over maximum buffer %d", | |
259 | total_data_size, maxBufSize)); | |
260 | return -EINVAL; | |
e4eb295d SF |
261 | } |
262 | return remaining; | |
263 | } | |
264 | } | |
265 | ||
fb8c4b14 | 266 | static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) |
e4eb295d SF |
267 | { |
268 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
269 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
270 | int total_data_size; | |
271 | int total_in_buf; | |
272 | int remaining; | |
273 | int total_in_buf2; | |
fb8c4b14 SF |
274 | char *data_area_of_target; |
275 | char *data_area_of_buf2; | |
e4eb295d SF |
276 | __u16 byte_count; |
277 | ||
278 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
279 | ||
fb8c4b14 | 280 | if (total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { |
63135e08 | 281 | cFYI(1, ("total data size of primary and secondary t2 differ")); |
e4eb295d SF |
282 | } |
283 | ||
284 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
285 | ||
286 | remaining = total_data_size - total_in_buf; | |
50c2f753 | 287 | |
fb8c4b14 | 288 | if (remaining < 0) |
e4eb295d SF |
289 | return -EINVAL; |
290 | ||
fb8c4b14 | 291 | if (remaining == 0) /* nothing to do, ignore */ |
e4eb295d | 292 | return 0; |
50c2f753 | 293 | |
e4eb295d | 294 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); |
fb8c4b14 | 295 | if (remaining < total_in_buf2) { |
467a8f8d | 296 | cFYI(1, ("transact2 2nd response contains too much data")); |
e4eb295d SF |
297 | } |
298 | ||
299 | /* find end of first SMB data area */ | |
fb8c4b14 | 300 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + |
e4eb295d SF |
301 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); |
302 | /* validate target area */ | |
303 | ||
304 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
fb8c4b14 | 305 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); |
e4eb295d SF |
306 | |
307 | data_area_of_target += total_in_buf; | |
308 | ||
309 | /* copy second buffer into end of first buffer */ | |
fb8c4b14 | 310 | memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); |
e4eb295d SF |
311 | total_in_buf += total_in_buf2; |
312 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
313 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
314 | byte_count += total_in_buf2; | |
315 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
316 | ||
70ca734a | 317 | byte_count = pTargetSMB->smb_buf_length; |
e4eb295d SF |
318 | byte_count += total_in_buf2; |
319 | ||
320 | /* BB also add check that we are not beyond maximum buffer size */ | |
50c2f753 | 321 | |
70ca734a | 322 | pTargetSMB->smb_buf_length = byte_count; |
e4eb295d | 323 | |
fb8c4b14 | 324 | if (remaining == total_in_buf2) { |
467a8f8d | 325 | cFYI(1, ("found the last secondary response")); |
e4eb295d SF |
326 | return 0; /* we are done */ |
327 | } else /* more responses to go */ | |
328 | return 1; | |
329 | ||
330 | } | |
331 | ||
1da177e4 LT |
332 | static int |
333 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
334 | { | |
335 | int length; | |
336 | unsigned int pdu_length, total_read; | |
337 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
338 | struct smb_hdr *bigbuf = NULL; |
339 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
340 | struct msghdr smb_msg; |
341 | struct kvec iov; | |
342 | struct socket *csocket = server->ssocket; | |
343 | struct list_head *tmp; | |
344 | struct cifsSesInfo *ses; | |
345 | struct task_struct *task_to_wake = NULL; | |
346 | struct mid_q_entry *mid_entry; | |
70ca734a | 347 | char temp; |
4b18f2a9 SF |
348 | bool isLargeBuf = false; |
349 | bool isMultiRsp; | |
e4eb295d | 350 | int reconnect; |
1da177e4 | 351 | |
1da177e4 | 352 | current->flags |= PF_MEMALLOC; |
ba25f9dc | 353 | cFYI(1, ("Demultiplex PID: %d", task_pid_nr(current))); |
93d0ec85 JL |
354 | |
355 | length = atomic_inc_return(&tcpSesAllocCount); | |
356 | if (length > 1) | |
26f57364 SF |
357 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, |
358 | GFP_KERNEL); | |
1da177e4 | 359 | |
83144186 | 360 | set_freezable(); |
469ee614 | 361 | while (server->tcpStatus != CifsExiting) { |
ede1327e SF |
362 | if (try_to_freeze()) |
363 | continue; | |
b8643e1b SF |
364 | if (bigbuf == NULL) { |
365 | bigbuf = cifs_buf_get(); | |
0fd1ffe0 PM |
366 | if (!bigbuf) { |
367 | cERROR(1, ("No memory for large SMB response")); | |
b8643e1b SF |
368 | msleep(3000); |
369 | /* retry will check if exiting */ | |
370 | continue; | |
371 | } | |
0fd1ffe0 PM |
372 | } else if (isLargeBuf) { |
373 | /* we are reusing a dirty large buf, clear its start */ | |
26f57364 | 374 | memset(bigbuf, 0, sizeof(struct smb_hdr)); |
1da177e4 | 375 | } |
b8643e1b SF |
376 | |
377 | if (smallbuf == NULL) { | |
378 | smallbuf = cifs_small_buf_get(); | |
0fd1ffe0 PM |
379 | if (!smallbuf) { |
380 | cERROR(1, ("No memory for SMB response")); | |
b8643e1b SF |
381 | msleep(1000); |
382 | /* retry will check if exiting */ | |
383 | continue; | |
384 | } | |
385 | /* beginning of smb buffer is cleared in our buf_get */ | |
386 | } else /* if existing small buf clear beginning */ | |
26f57364 | 387 | memset(smallbuf, 0, sizeof(struct smb_hdr)); |
b8643e1b | 388 | |
4b18f2a9 SF |
389 | isLargeBuf = false; |
390 | isMultiRsp = false; | |
b8643e1b | 391 | smb_buffer = smallbuf; |
1da177e4 LT |
392 | iov.iov_base = smb_buffer; |
393 | iov.iov_len = 4; | |
394 | smb_msg.msg_control = NULL; | |
395 | smb_msg.msg_controllen = 0; | |
f01d5e14 SF |
396 | pdu_length = 4; /* enough to get RFC1001 header */ |
397 | incomplete_rcv: | |
1da177e4 LT |
398 | length = |
399 | kernel_recvmsg(csocket, &smb_msg, | |
f01d5e14 | 400 | &iov, 1, pdu_length, 0 /* BB other flags? */); |
1da177e4 | 401 | |
469ee614 | 402 | if (server->tcpStatus == CifsExiting) { |
1da177e4 LT |
403 | break; |
404 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
0fd1ffe0 | 405 | cFYI(1, ("Reconnect after server stopped responding")); |
1da177e4 | 406 | cifs_reconnect(server); |
0fd1ffe0 | 407 | cFYI(1, ("call to reconnect done")); |
1da177e4 LT |
408 | csocket = server->ssocket; |
409 | continue; | |
410 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 411 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
412 | allowing socket to clear and app threads to set |
413 | tcpStatus CifsNeedReconnect if server hung */ | |
c18c732e SF |
414 | if (pdu_length < 4) |
415 | goto incomplete_rcv; | |
416 | else | |
417 | continue; | |
1da177e4 | 418 | } else if (length <= 0) { |
0fd1ffe0 PM |
419 | if (server->tcpStatus == CifsNew) { |
420 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
421 | /* some servers kill the TCP session rather than |
422 | returning an SMB negprot error, in which | |
423 | case reconnecting here is not going to help, | |
424 | and so simply return error to mount */ | |
1da177e4 LT |
425 | break; |
426 | } | |
0fd1ffe0 | 427 | if (!try_to_freeze() && (length == -EINTR)) { |
467a8f8d | 428 | cFYI(1, ("cifsd thread killed")); |
1da177e4 LT |
429 | break; |
430 | } | |
467a8f8d | 431 | cFYI(1, ("Reconnect after unexpected peek error %d", |
57337e42 | 432 | length)); |
1da177e4 LT |
433 | cifs_reconnect(server); |
434 | csocket = server->ssocket; | |
435 | wake_up(&server->response_q); | |
436 | continue; | |
2a974680 PT |
437 | } else if (length < pdu_length) { |
438 | cFYI(1, ("requested %d bytes but only got %d bytes", | |
439 | pdu_length, length)); | |
f01d5e14 | 440 | pdu_length -= length; |
f01d5e14 SF |
441 | msleep(1); |
442 | goto incomplete_rcv; | |
46810cbf | 443 | } |
1da177e4 | 444 | |
70ca734a SF |
445 | /* The right amount was read from socket - 4 bytes */ |
446 | /* so we can now interpret the length field */ | |
46810cbf | 447 | |
70ca734a SF |
448 | /* the first byte big endian of the length field, |
449 | is actually not part of the length but the type | |
450 | with the most common, zero, as regular data */ | |
451 | temp = *((char *) smb_buffer); | |
46810cbf | 452 | |
fb8c4b14 | 453 | /* Note that FC 1001 length is big endian on the wire, |
70ca734a SF |
454 | but we convert it here so it is always manipulated |
455 | as host byte order */ | |
5ca33c6a | 456 | pdu_length = be32_to_cpu((__force __be32)smb_buffer->smb_buf_length); |
70ca734a SF |
457 | smb_buffer->smb_buf_length = pdu_length; |
458 | ||
467a8f8d | 459 | cFYI(1, ("rfc1002 length 0x%x", pdu_length+4)); |
46810cbf | 460 | |
70ca734a | 461 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
fb8c4b14 | 462 | continue; |
70ca734a | 463 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
467a8f8d | 464 | cFYI(1, ("Good RFC 1002 session rsp")); |
e4eb295d | 465 | continue; |
70ca734a | 466 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
fb8c4b14 | 467 | /* we get this from Windows 98 instead of |
46810cbf | 468 | an error on SMB negprot response */ |
fb8c4b14 | 469 | cFYI(1, ("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 470 | pdu_length)); |
fb8c4b14 SF |
471 | if (server->tcpStatus == CifsNew) { |
472 | /* if nack on negprot (rather than | |
46810cbf SF |
473 | ret of smb negprot error) reconnecting |
474 | not going to help, ret error to mount */ | |
475 | break; | |
476 | } else { | |
477 | /* give server a second to | |
478 | clean up before reconnect attempt */ | |
479 | msleep(1000); | |
480 | /* always try 445 first on reconnect | |
481 | since we get NACK on some if we ever | |
fb8c4b14 | 482 | connected to port 139 (the NACK is |
46810cbf SF |
483 | since we do not begin with RFC1001 |
484 | session initialize frame) */ | |
fb8c4b14 | 485 | server->addr.sockAddr.sin_port = |
46810cbf | 486 | htons(CIFS_PORT); |
1da177e4 LT |
487 | cifs_reconnect(server); |
488 | csocket = server->ssocket; | |
46810cbf | 489 | wake_up(&server->response_q); |
1da177e4 | 490 | continue; |
46810cbf | 491 | } |
70ca734a | 492 | } else if (temp != (char) 0) { |
fb8c4b14 | 493 | cERROR(1, ("Unknown RFC 1002 frame")); |
70ca734a SF |
494 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
495 | length); | |
46810cbf SF |
496 | cifs_reconnect(server); |
497 | csocket = server->ssocket; | |
498 | continue; | |
e4eb295d SF |
499 | } |
500 | ||
501 | /* else we have an SMB response */ | |
fb8c4b14 | 502 | if ((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || |
26f57364 | 503 | (pdu_length < sizeof(struct smb_hdr) - 1 - 4)) { |
e4eb295d | 504 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 505 | length, pdu_length+4)); |
e4eb295d SF |
506 | cifs_reconnect(server); |
507 | csocket = server->ssocket; | |
508 | wake_up(&server->response_q); | |
509 | continue; | |
fb8c4b14 | 510 | } |
e4eb295d SF |
511 | |
512 | /* else length ok */ | |
513 | reconnect = 0; | |
514 | ||
fb8c4b14 | 515 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
4b18f2a9 | 516 | isLargeBuf = true; |
e4eb295d SF |
517 | memcpy(bigbuf, smallbuf, 4); |
518 | smb_buffer = bigbuf; | |
519 | } | |
520 | length = 0; | |
521 | iov.iov_base = 4 + (char *)smb_buffer; | |
522 | iov.iov_len = pdu_length; | |
fb8c4b14 | 523 | for (total_read = 0; total_read < pdu_length; |
e4eb295d SF |
524 | total_read += length) { |
525 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
526 | pdu_length - total_read, 0); | |
469ee614 | 527 | if ((server->tcpStatus == CifsExiting) || |
e4eb295d SF |
528 | (length == -EINTR)) { |
529 | /* then will exit */ | |
530 | reconnect = 2; | |
531 | break; | |
532 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
533 | cifs_reconnect(server); |
534 | csocket = server->ssocket; | |
fb8c4b14 | 535 | /* Reconnect wakes up rspns q */ |
e4eb295d SF |
536 | /* Now we will reread sock */ |
537 | reconnect = 1; | |
538 | break; | |
fb8c4b14 | 539 | } else if ((length == -ERESTARTSYS) || |
e4eb295d SF |
540 | (length == -EAGAIN)) { |
541 | msleep(1); /* minimum sleep to prevent looping, | |
fb8c4b14 | 542 | allowing socket to clear and app |
e4eb295d SF |
543 | threads to set tcpStatus |
544 | CifsNeedReconnect if server hung*/ | |
c18c732e | 545 | length = 0; |
46810cbf | 546 | continue; |
e4eb295d | 547 | } else if (length <= 0) { |
fb8c4b14 | 548 | cERROR(1, ("Received no data, expecting %d", |
e4eb295d SF |
549 | pdu_length - total_read)); |
550 | cifs_reconnect(server); | |
551 | csocket = server->ssocket; | |
552 | reconnect = 1; | |
553 | break; | |
46810cbf | 554 | } |
e4eb295d | 555 | } |
fb8c4b14 | 556 | if (reconnect == 2) |
e4eb295d | 557 | break; |
fb8c4b14 | 558 | else if (reconnect == 1) |
e4eb295d | 559 | continue; |
1da177e4 | 560 | |
e4eb295d | 561 | length += 4; /* account for rfc1002 hdr */ |
50c2f753 | 562 | |
09d1db5c | 563 | |
e4eb295d | 564 | dump_smb(smb_buffer, length); |
184ed211 | 565 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 566 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
567 | continue; |
568 | } | |
1da177e4 | 569 | |
e4eb295d SF |
570 | |
571 | task_to_wake = NULL; | |
572 | spin_lock(&GlobalMid_Lock); | |
573 | list_for_each(tmp, &server->pending_mid_q) { | |
574 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
575 | ||
50c2f753 | 576 | if ((mid_entry->mid == smb_buffer->Mid) && |
e4eb295d SF |
577 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && |
578 | (mid_entry->command == smb_buffer->Command)) { | |
fb8c4b14 | 579 | if (check2ndT2(smb_buffer,server->maxBuf) > 0) { |
e4eb295d | 580 | /* We have a multipart transact2 resp */ |
4b18f2a9 | 581 | isMultiRsp = true; |
fb8c4b14 | 582 | if (mid_entry->resp_buf) { |
e4eb295d | 583 | /* merge response - fix up 1st*/ |
50c2f753 | 584 | if (coalesce_t2(smb_buffer, |
e4eb295d | 585 | mid_entry->resp_buf)) { |
4b18f2a9 SF |
586 | mid_entry->multiRsp = |
587 | true; | |
e4eb295d SF |
588 | break; |
589 | } else { | |
590 | /* all parts received */ | |
4b18f2a9 SF |
591 | mid_entry->multiEnd = |
592 | true; | |
50c2f753 | 593 | goto multi_t2_fnd; |
e4eb295d SF |
594 | } |
595 | } else { | |
fb8c4b14 | 596 | if (!isLargeBuf) { |
e4eb295d SF |
597 | cERROR(1,("1st trans2 resp needs bigbuf")); |
598 | /* BB maybe we can fix this up, switch | |
50c2f753 | 599 | to already allocated large buffer? */ |
e4eb295d | 600 | } else { |
cd63499c | 601 | /* Have first buffer */ |
e4eb295d SF |
602 | mid_entry->resp_buf = |
603 | smb_buffer; | |
4b18f2a9 SF |
604 | mid_entry->largeBuf = |
605 | true; | |
e4eb295d SF |
606 | bigbuf = NULL; |
607 | } | |
608 | } | |
609 | break; | |
50c2f753 | 610 | } |
e4eb295d | 611 | mid_entry->resp_buf = smb_buffer; |
4b18f2a9 | 612 | mid_entry->largeBuf = isLargeBuf; |
e4eb295d SF |
613 | multi_t2_fnd: |
614 | task_to_wake = mid_entry->tsk; | |
615 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
616 | #ifdef CONFIG_CIFS_STATS2 |
617 | mid_entry->when_received = jiffies; | |
618 | #endif | |
3a5ff61c SF |
619 | /* so we do not time out requests to server |
620 | which is still responding (since server could | |
621 | be busy but not dead) */ | |
622 | server->lstrp = jiffies; | |
e4eb295d | 623 | break; |
46810cbf | 624 | } |
1da177e4 | 625 | } |
e4eb295d SF |
626 | spin_unlock(&GlobalMid_Lock); |
627 | if (task_to_wake) { | |
cd63499c | 628 | /* Was previous buf put in mpx struct for multi-rsp? */ |
fb8c4b14 | 629 | if (!isMultiRsp) { |
cd63499c | 630 | /* smb buffer will be freed by user thread */ |
26f57364 | 631 | if (isLargeBuf) |
cd63499c | 632 | bigbuf = NULL; |
26f57364 | 633 | else |
cd63499c SF |
634 | smallbuf = NULL; |
635 | } | |
e4eb295d | 636 | wake_up_process(task_to_wake); |
4b18f2a9 SF |
637 | } else if (!is_valid_oplock_break(smb_buffer, server) && |
638 | !isMultiRsp) { | |
50c2f753 SF |
639 | cERROR(1, ("No task to wake, unknown frame received! " |
640 | "NumMids %d", midCount.counter)); | |
641 | cifs_dump_mem("Received Data is: ", (char *)smb_buffer, | |
70ca734a | 642 | sizeof(struct smb_hdr)); |
3979877e SF |
643 | #ifdef CONFIG_CIFS_DEBUG2 |
644 | cifs_dump_detail(smb_buffer); | |
645 | cifs_dump_mids(server); | |
646 | #endif /* CIFS_DEBUG2 */ | |
50c2f753 | 647 | |
e4eb295d SF |
648 | } |
649 | } /* end while !EXITING */ | |
650 | ||
1da177e4 LT |
651 | spin_lock(&GlobalMid_Lock); |
652 | server->tcpStatus = CifsExiting; | |
e691b9d1 | 653 | spin_unlock(&GlobalMid_Lock); |
dbdbb876 | 654 | wake_up_all(&server->response_q); |
e691b9d1 | 655 | |
31ca3bc3 SF |
656 | /* check if we have blocked requests that need to free */ |
657 | /* Note that cifs_max_pending is normally 50, but | |
658 | can be set at module install time to as little as two */ | |
e691b9d1 | 659 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 | 660 | if (atomic_read(&server->inFlight) >= cifs_max_pending) |
31ca3bc3 SF |
661 | atomic_set(&server->inFlight, cifs_max_pending - 1); |
662 | /* We do not want to set the max_pending too low or we | |
663 | could end up with the counter going negative */ | |
1da177e4 | 664 | spin_unlock(&GlobalMid_Lock); |
50c2f753 | 665 | /* Although there should not be any requests blocked on |
1da177e4 | 666 | this queue it can not hurt to be paranoid and try to wake up requests |
09d1db5c | 667 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
668 | to the same server - they now will see the session is in exit state |
669 | and get out of SendReceive. */ | |
670 | wake_up_all(&server->request_q); | |
671 | /* give those requests time to exit */ | |
b8643e1b | 672 | msleep(125); |
50c2f753 | 673 | |
fb8c4b14 | 674 | if (server->ssocket) { |
1da177e4 LT |
675 | sock_release(csocket); |
676 | server->ssocket = NULL; | |
677 | } | |
b8643e1b | 678 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
a8a11d39 MK |
679 | cifs_buf_release(bigbuf); |
680 | if (smallbuf) /* no sense logging a debug message if NULL */ | |
b8643e1b | 681 | cifs_small_buf_release(smallbuf); |
1da177e4 LT |
682 | |
683 | read_lock(&GlobalSMBSeslock); | |
684 | if (list_empty(&server->pending_mid_q)) { | |
09d1db5c SF |
685 | /* loop through server session structures attached to this and |
686 | mark them dead */ | |
1da177e4 LT |
687 | list_for_each(tmp, &GlobalSMBSessionList) { |
688 | ses = | |
689 | list_entry(tmp, struct cifsSesInfo, | |
690 | cifsSessionList); | |
691 | if (ses->server == server) { | |
692 | ses->status = CifsExiting; | |
693 | ses->server = NULL; | |
694 | } | |
695 | } | |
696 | read_unlock(&GlobalSMBSeslock); | |
697 | } else { | |
31ca3bc3 SF |
698 | /* although we can not zero the server struct pointer yet, |
699 | since there are active requests which may depnd on them, | |
700 | mark the corresponding SMB sessions as exiting too */ | |
701 | list_for_each(tmp, &GlobalSMBSessionList) { | |
702 | ses = list_entry(tmp, struct cifsSesInfo, | |
703 | cifsSessionList); | |
26f57364 | 704 | if (ses->server == server) |
31ca3bc3 | 705 | ses->status = CifsExiting; |
31ca3bc3 SF |
706 | } |
707 | ||
1da177e4 LT |
708 | spin_lock(&GlobalMid_Lock); |
709 | list_for_each(tmp, &server->pending_mid_q) { | |
710 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
711 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
50c2f753 SF |
712 | cFYI(1, ("Clearing Mid 0x%x - waking up ", |
713 | mid_entry->mid)); | |
1da177e4 | 714 | task_to_wake = mid_entry->tsk; |
26f57364 | 715 | if (task_to_wake) |
1da177e4 | 716 | wake_up_process(task_to_wake); |
1da177e4 LT |
717 | } |
718 | } | |
719 | spin_unlock(&GlobalMid_Lock); | |
720 | read_unlock(&GlobalSMBSeslock); | |
1da177e4 | 721 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 722 | msleep(125); |
1da177e4 LT |
723 | } |
724 | ||
f191401f | 725 | if (!list_empty(&server->pending_mid_q)) { |
50c2f753 | 726 | /* mpx threads have not exited yet give them |
1da177e4 | 727 | at least the smb send timeout time for long ops */ |
31ca3bc3 SF |
728 | /* due to delays on oplock break requests, we need |
729 | to wait at least 45 seconds before giving up | |
730 | on a request getting a response and going ahead | |
731 | and killing cifsd */ | |
1da177e4 | 732 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 733 | msleep(46000); |
1da177e4 LT |
734 | /* if threads still have not exited they are probably never |
735 | coming home not much else we can do but free the memory */ | |
736 | } | |
1da177e4 | 737 | |
31ca3bc3 SF |
738 | /* last chance to mark ses pointers invalid |
739 | if there are any pointing to this (e.g | |
50c2f753 | 740 | if a crazy root user tried to kill cifsd |
31ca3bc3 | 741 | kernel thread explicitly this might happen) */ |
93d0ec85 | 742 | write_lock(&GlobalSMBSeslock); |
31ca3bc3 SF |
743 | list_for_each(tmp, &GlobalSMBSessionList) { |
744 | ses = list_entry(tmp, struct cifsSesInfo, | |
745 | cifsSessionList); | |
26f57364 | 746 | if (ses->server == server) |
31ca3bc3 | 747 | ses->server = NULL; |
31ca3bc3 | 748 | } |
1da177e4 | 749 | write_unlock(&GlobalSMBSeslock); |
31ca3bc3 | 750 | |
c359cf3c | 751 | kfree(server->hostname); |
31ca3bc3 | 752 | kfree(server); |
93d0ec85 JL |
753 | |
754 | length = atomic_dec_return(&tcpSesAllocCount); | |
26f57364 SF |
755 | if (length > 0) |
756 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, | |
757 | GFP_KERNEL); | |
50c2f753 | 758 | |
1da177e4 LT |
759 | return 0; |
760 | } | |
761 | ||
c359cf3c JL |
762 | /* extract the host portion of the UNC string */ |
763 | static char * | |
764 | extract_hostname(const char *unc) | |
765 | { | |
766 | const char *src; | |
767 | char *dst, *delim; | |
768 | unsigned int len; | |
769 | ||
770 | /* skip double chars at beginning of string */ | |
771 | /* BB: check validity of these bytes? */ | |
772 | src = unc + 2; | |
773 | ||
774 | /* delimiter between hostname and sharename is always '\\' now */ | |
775 | delim = strchr(src, '\\'); | |
776 | if (!delim) | |
777 | return ERR_PTR(-EINVAL); | |
778 | ||
779 | len = delim - src; | |
780 | dst = kmalloc((len + 1), GFP_KERNEL); | |
781 | if (dst == NULL) | |
782 | return ERR_PTR(-ENOMEM); | |
783 | ||
784 | memcpy(dst, src, len); | |
785 | dst[len] = '\0'; | |
786 | ||
787 | return dst; | |
788 | } | |
789 | ||
1da177e4 | 790 | static int |
50c2f753 SF |
791 | cifs_parse_mount_options(char *options, const char *devname, |
792 | struct smb_vol *vol) | |
1da177e4 LT |
793 | { |
794 | char *value; | |
795 | char *data; | |
796 | unsigned int temp_len, i, j; | |
797 | char separator[2]; | |
798 | ||
799 | separator[0] = ','; | |
50c2f753 | 800 | separator[1] = 0; |
1da177e4 | 801 | |
12e36b2f | 802 | if (Local_System_Name[0] != 0) |
50c2f753 | 803 | memcpy(vol->source_rfc1001_name, Local_System_Name, 15); |
2cd646a2 | 804 | else { |
12e36b2f | 805 | char *nodename = utsname()->nodename; |
50c2f753 SF |
806 | int n = strnlen(nodename, 15); |
807 | memset(vol->source_rfc1001_name, 0x20, 15); | |
808 | for (i = 0; i < n; i++) { | |
2cd646a2 SF |
809 | /* does not have to be perfect mapping since field is |
810 | informational, only used for servers that do not support | |
811 | port 445 and it can be overridden at mount time */ | |
12e36b2f | 812 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
2cd646a2 | 813 | } |
1da177e4 LT |
814 | } |
815 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
816 | /* null target name indicates to use *SMBSERVR default called name |
817 | if we end up sending RFC1001 session initialize */ | |
818 | vol->target_rfc1001_name[0] = 0; | |
1da177e4 LT |
819 | vol->linux_uid = current->uid; /* current->euid instead? */ |
820 | vol->linux_gid = current->gid; | |
821 | vol->dir_mode = S_IRWXUGO; | |
822 | /* 2767 perms indicate mandatory locking support */ | |
7505e052 | 823 | vol->file_mode = (S_IRWXUGO | S_ISGID) & (~S_IXGRP); |
1da177e4 LT |
824 | |
825 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
4b18f2a9 | 826 | vol->rw = true; |
ac67055e JA |
827 | /* default is always to request posix paths. */ |
828 | vol->posix_paths = 1; | |
829 | ||
1da177e4 LT |
830 | if (!options) |
831 | return 1; | |
832 | ||
50c2f753 | 833 | if (strncmp(options, "sep=", 4) == 0) { |
fb8c4b14 | 834 | if (options[4] != 0) { |
1da177e4 LT |
835 | separator[0] = options[4]; |
836 | options += 5; | |
837 | } else { | |
467a8f8d | 838 | cFYI(1, ("Null separator not allowed")); |
1da177e4 LT |
839 | } |
840 | } | |
50c2f753 | 841 | |
1da177e4 LT |
842 | while ((data = strsep(&options, separator)) != NULL) { |
843 | if (!*data) | |
844 | continue; | |
845 | if ((value = strchr(data, '=')) != NULL) | |
846 | *value++ = '\0'; | |
847 | ||
50c2f753 SF |
848 | /* Have to parse this before we parse for "user" */ |
849 | if (strnicmp(data, "user_xattr", 10) == 0) { | |
1da177e4 | 850 | vol->no_xattr = 0; |
50c2f753 | 851 | } else if (strnicmp(data, "nouser_xattr", 12) == 0) { |
1da177e4 LT |
852 | vol->no_xattr = 1; |
853 | } else if (strnicmp(data, "user", 4) == 0) { | |
4b952a9b | 854 | if (!value) { |
1da177e4 LT |
855 | printk(KERN_WARNING |
856 | "CIFS: invalid or missing username\n"); | |
857 | return 1; /* needs_arg; */ | |
fb8c4b14 | 858 | } else if (!*value) { |
4b952a9b SF |
859 | /* null user, ie anonymous, authentication */ |
860 | vol->nullauth = 1; | |
1da177e4 LT |
861 | } |
862 | if (strnlen(value, 200) < 200) { | |
863 | vol->username = value; | |
864 | } else { | |
865 | printk(KERN_WARNING "CIFS: username too long\n"); | |
866 | return 1; | |
867 | } | |
868 | } else if (strnicmp(data, "pass", 4) == 0) { | |
869 | if (!value) { | |
870 | vol->password = NULL; | |
871 | continue; | |
fb8c4b14 | 872 | } else if (value[0] == 0) { |
1da177e4 LT |
873 | /* check if string begins with double comma |
874 | since that would mean the password really | |
875 | does start with a comma, and would not | |
876 | indicate an empty string */ | |
fb8c4b14 | 877 | if (value[1] != separator[0]) { |
1da177e4 LT |
878 | vol->password = NULL; |
879 | continue; | |
880 | } | |
881 | } | |
882 | temp_len = strlen(value); | |
883 | /* removed password length check, NTLM passwords | |
884 | can be arbitrarily long */ | |
885 | ||
50c2f753 | 886 | /* if comma in password, the string will be |
1da177e4 LT |
887 | prematurely null terminated. Commas in password are |
888 | specified across the cifs mount interface by a double | |
889 | comma ie ,, and a comma used as in other cases ie ',' | |
890 | as a parameter delimiter/separator is single and due | |
891 | to the strsep above is temporarily zeroed. */ | |
892 | ||
893 | /* NB: password legally can have multiple commas and | |
894 | the only illegal character in a password is null */ | |
895 | ||
50c2f753 | 896 | if ((value[temp_len] == 0) && |
09d1db5c | 897 | (value[temp_len+1] == separator[0])) { |
1da177e4 LT |
898 | /* reinsert comma */ |
899 | value[temp_len] = separator[0]; | |
50c2f753 SF |
900 | temp_len += 2; /* move after second comma */ |
901 | while (value[temp_len] != 0) { | |
1da177e4 | 902 | if (value[temp_len] == separator[0]) { |
50c2f753 | 903 | if (value[temp_len+1] == |
09d1db5c SF |
904 | separator[0]) { |
905 | /* skip second comma */ | |
906 | temp_len++; | |
50c2f753 | 907 | } else { |
1da177e4 LT |
908 | /* single comma indicating start |
909 | of next parm */ | |
910 | break; | |
911 | } | |
912 | } | |
913 | temp_len++; | |
914 | } | |
fb8c4b14 | 915 | if (value[temp_len] == 0) { |
1da177e4 LT |
916 | options = NULL; |
917 | } else { | |
918 | value[temp_len] = 0; | |
919 | /* point option to start of next parm */ | |
920 | options = value + temp_len + 1; | |
921 | } | |
50c2f753 | 922 | /* go from value to value + temp_len condensing |
1da177e4 LT |
923 | double commas to singles. Note that this ends up |
924 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 925 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
fb8c4b14 | 926 | if (vol->password == NULL) { |
50c2f753 SF |
927 | printk(KERN_WARNING "CIFS: no memory " |
928 | "for password\n"); | |
433dc24f SF |
929 | return 1; |
930 | } | |
50c2f753 | 931 | for (i = 0, j = 0; i < temp_len; i++, j++) { |
1da177e4 | 932 | vol->password[j] = value[i]; |
fb8c4b14 | 933 | if (value[i] == separator[0] |
09d1db5c | 934 | && value[i+1] == separator[0]) { |
1da177e4 LT |
935 | /* skip second comma */ |
936 | i++; | |
937 | } | |
938 | } | |
939 | vol->password[j] = 0; | |
940 | } else { | |
e915fc49 | 941 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
fb8c4b14 | 942 | if (vol->password == NULL) { |
50c2f753 SF |
943 | printk(KERN_WARNING "CIFS: no memory " |
944 | "for password\n"); | |
433dc24f SF |
945 | return 1; |
946 | } | |
1da177e4 LT |
947 | strcpy(vol->password, value); |
948 | } | |
949 | } else if (strnicmp(data, "ip", 2) == 0) { | |
950 | if (!value || !*value) { | |
951 | vol->UNCip = NULL; | |
952 | } else if (strnlen(value, 35) < 35) { | |
953 | vol->UNCip = value; | |
954 | } else { | |
50c2f753 SF |
955 | printk(KERN_WARNING "CIFS: ip address " |
956 | "too long\n"); | |
1da177e4 LT |
957 | return 1; |
958 | } | |
50c2f753 SF |
959 | } else if (strnicmp(data, "sec", 3) == 0) { |
960 | if (!value || !*value) { | |
961 | cERROR(1, ("no security value specified")); | |
962 | continue; | |
963 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
964 | vol->secFlg |= CIFSSEC_MAY_KRB5 | | |
189acaae | 965 | CIFSSEC_MUST_SIGN; |
bf820679 | 966 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
50c2f753 SF |
967 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
968 | CIFSSEC_MAY_KRB5; */ | |
969 | cERROR(1, ("Krb5 cifs privacy not supported")); | |
bf820679 SF |
970 | return 1; |
971 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 972 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
bf820679 | 973 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 974 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 975 | CIFSSEC_MUST_SIGN; |
bf820679 | 976 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 977 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 978 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 979 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 980 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
981 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
982 | /* ntlm is default so can be turned off too */ | |
750d1151 | 983 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 984 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 985 | /* BB is there a better way to do this? */ |
750d1151 | 986 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
987 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
988 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
50c2f753 | 989 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 990 | #endif |
bf820679 | 991 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 992 | vol->nullauth = 1; |
50c2f753 SF |
993 | } else { |
994 | cERROR(1, ("bad security option: %s", value)); | |
995 | return 1; | |
996 | } | |
1da177e4 LT |
997 | } else if ((strnicmp(data, "unc", 3) == 0) |
998 | || (strnicmp(data, "target", 6) == 0) | |
999 | || (strnicmp(data, "path", 4) == 0)) { | |
1000 | if (!value || !*value) { | |
50c2f753 SF |
1001 | printk(KERN_WARNING "CIFS: invalid path to " |
1002 | "network resource\n"); | |
1da177e4 LT |
1003 | return 1; /* needs_arg; */ |
1004 | } | |
1005 | if ((temp_len = strnlen(value, 300)) < 300) { | |
50c2f753 | 1006 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1007 | if (vol->UNC == NULL) |
1da177e4 | 1008 | return 1; |
50c2f753 | 1009 | strcpy(vol->UNC, value); |
1da177e4 LT |
1010 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1011 | vol->UNC[0] = '\\'; | |
1012 | vol->UNC[1] = '\\'; | |
50c2f753 | 1013 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
1da177e4 | 1014 | printk(KERN_WARNING |
50c2f753 SF |
1015 | "CIFS: UNC Path does not begin " |
1016 | "with // or \\\\ \n"); | |
1da177e4 LT |
1017 | return 1; |
1018 | } | |
1019 | } else { | |
1020 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1021 | return 1; | |
1022 | } | |
1023 | } else if ((strnicmp(data, "domain", 3) == 0) | |
1024 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
1025 | if (!value || !*value) { | |
1026 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
1027 | return 1; /* needs_arg; */ | |
1028 | } | |
1029 | /* BB are there cases in which a comma can be valid in | |
1030 | a domain name and need special handling? */ | |
3979877e | 1031 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
1032 | vol->domainname = value; |
1033 | cFYI(1, ("Domain name set")); | |
1034 | } else { | |
50c2f753 SF |
1035 | printk(KERN_WARNING "CIFS: domain name too " |
1036 | "long\n"); | |
1da177e4 LT |
1037 | return 1; |
1038 | } | |
50c2f753 SF |
1039 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
1040 | if (!value || !*value) { | |
1041 | printk(KERN_WARNING | |
1042 | "CIFS: invalid path prefix\n"); | |
1043 | return 1; /* needs_argument */ | |
1044 | } | |
1045 | if ((temp_len = strnlen(value, 1024)) < 1024) { | |
4523cc30 | 1046 | if (value[0] != '/') |
2fe87f02 | 1047 | temp_len++; /* missing leading slash */ |
50c2f753 SF |
1048 | vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); |
1049 | if (vol->prepath == NULL) | |
1050 | return 1; | |
4523cc30 | 1051 | if (value[0] != '/') { |
2fe87f02 | 1052 | vol->prepath[0] = '/'; |
50c2f753 | 1053 | strcpy(vol->prepath+1, value); |
2fe87f02 | 1054 | } else |
50c2f753 SF |
1055 | strcpy(vol->prepath, value); |
1056 | cFYI(1, ("prefix path %s", vol->prepath)); | |
1057 | } else { | |
1058 | printk(KERN_WARNING "CIFS: prefix too long\n"); | |
1059 | return 1; | |
1060 | } | |
1da177e4 LT |
1061 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
1062 | if (!value || !*value) { | |
63135e08 SF |
1063 | printk(KERN_WARNING "CIFS: invalid iocharset " |
1064 | "specified\n"); | |
1da177e4 LT |
1065 | return 1; /* needs_arg; */ |
1066 | } | |
1067 | if (strnlen(value, 65) < 65) { | |
50c2f753 | 1068 | if (strnicmp(value, "default", 7)) |
1da177e4 | 1069 | vol->iocharset = value; |
50c2f753 SF |
1070 | /* if iocharset not set then load_nls_default |
1071 | is used by caller */ | |
1072 | cFYI(1, ("iocharset set to %s", value)); | |
1da177e4 | 1073 | } else { |
63135e08 SF |
1074 | printk(KERN_WARNING "CIFS: iocharset name " |
1075 | "too long.\n"); | |
1da177e4 LT |
1076 | return 1; |
1077 | } | |
1078 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1079 | if (value && *value) { | |
1080 | vol->linux_uid = | |
1081 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1082 | vol->override_uid = 1; |
1da177e4 LT |
1083 | } |
1084 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1085 | if (value && *value) { | |
1086 | vol->linux_gid = | |
1087 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1088 | vol->override_gid = 1; |
1da177e4 LT |
1089 | } |
1090 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1091 | if (value && *value) { | |
1092 | vol->file_mode = | |
1093 | simple_strtoul(value, &value, 0); | |
1094 | } | |
1095 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1096 | if (value && *value) { | |
1097 | vol->dir_mode = | |
1098 | simple_strtoul(value, &value, 0); | |
1099 | } | |
1100 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1101 | if (value && *value) { | |
1102 | vol->dir_mode = | |
1103 | simple_strtoul(value, &value, 0); | |
1104 | } | |
1105 | } else if (strnicmp(data, "port", 4) == 0) { | |
1106 | if (value && *value) { | |
1107 | vol->port = | |
1108 | simple_strtoul(value, &value, 0); | |
1109 | } | |
1110 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1111 | if (value && *value) { | |
1112 | vol->rsize = | |
1113 | simple_strtoul(value, &value, 0); | |
1114 | } | |
1115 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1116 | if (value && *value) { | |
1117 | vol->wsize = | |
1118 | simple_strtoul(value, &value, 0); | |
1119 | } | |
1120 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1121 | if (value && *value) { | |
1122 | vol->sockopt = | |
1123 | simple_strtoul(value, &value, 0); | |
1124 | } | |
1125 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1126 | if (!value || !*value || (*value == ' ')) { | |
63135e08 | 1127 | cFYI(1, ("invalid (empty) netbiosname")); |
1da177e4 | 1128 | } else { |
50c2f753 SF |
1129 | memset(vol->source_rfc1001_name, 0x20, 15); |
1130 | for (i = 0; i < 15; i++) { | |
1131 | /* BB are there cases in which a comma can be | |
1da177e4 LT |
1132 | valid in this workstation netbios name (and need |
1133 | special handling)? */ | |
1134 | ||
1135 | /* We do not uppercase netbiosname for user */ | |
50c2f753 | 1136 | if (value[i] == 0) |
1da177e4 | 1137 | break; |
50c2f753 SF |
1138 | else |
1139 | vol->source_rfc1001_name[i] = | |
1140 | value[i]; | |
1da177e4 LT |
1141 | } |
1142 | /* The string has 16th byte zero still from | |
1143 | set at top of the function */ | |
50c2f753 SF |
1144 | if ((i == 15) && (value[i] != 0)) |
1145 | printk(KERN_WARNING "CIFS: netbiosname" | |
1146 | " longer than 15 truncated.\n"); | |
a10faeb2 SF |
1147 | } |
1148 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1149 | /* servernetbiosname specified override *SMBSERVER */ | |
1150 | if (!value || !*value || (*value == ' ')) { | |
467a8f8d | 1151 | cFYI(1, ("empty server netbiosname specified")); |
a10faeb2 SF |
1152 | } else { |
1153 | /* last byte, type, is 0x20 for servr type */ | |
50c2f753 | 1154 | memset(vol->target_rfc1001_name, 0x20, 16); |
a10faeb2 | 1155 | |
50c2f753 | 1156 | for (i = 0; i < 15; i++) { |
a10faeb2 | 1157 | /* BB are there cases in which a comma can be |
50c2f753 SF |
1158 | valid in this workstation netbios name |
1159 | (and need special handling)? */ | |
a10faeb2 | 1160 | |
50c2f753 SF |
1161 | /* user or mount helper must uppercase |
1162 | the netbiosname */ | |
1163 | if (value[i] == 0) | |
a10faeb2 SF |
1164 | break; |
1165 | else | |
50c2f753 SF |
1166 | vol->target_rfc1001_name[i] = |
1167 | value[i]; | |
a10faeb2 SF |
1168 | } |
1169 | /* The string has 16th byte zero still from | |
1170 | set at top of the function */ | |
50c2f753 SF |
1171 | if ((i == 15) && (value[i] != 0)) |
1172 | printk(KERN_WARNING "CIFS: server net" | |
1173 | "biosname longer than 15 truncated.\n"); | |
1da177e4 LT |
1174 | } |
1175 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1176 | /* ignore */ | |
1177 | } else if (strnicmp(data, "version", 3) == 0) { | |
1178 | /* ignore */ | |
50c2f753 | 1179 | } else if (strnicmp(data, "guest", 5) == 0) { |
1da177e4 LT |
1180 | /* ignore */ |
1181 | } else if (strnicmp(data, "rw", 2) == 0) { | |
4b18f2a9 | 1182 | vol->rw = true; |
1da177e4 LT |
1183 | } else if ((strnicmp(data, "suid", 4) == 0) || |
1184 | (strnicmp(data, "nosuid", 6) == 0) || | |
1185 | (strnicmp(data, "exec", 4) == 0) || | |
1186 | (strnicmp(data, "noexec", 6) == 0) || | |
1187 | (strnicmp(data, "nodev", 5) == 0) || | |
1188 | (strnicmp(data, "noauto", 6) == 0) || | |
1189 | (strnicmp(data, "dev", 3) == 0)) { | |
1190 | /* The mount tool or mount.cifs helper (if present) | |
50c2f753 SF |
1191 | uses these opts to set flags, and the flags are read |
1192 | by the kernel vfs layer before we get here (ie | |
1193 | before read super) so there is no point trying to | |
1194 | parse these options again and set anything and it | |
1195 | is ok to just ignore them */ | |
1da177e4 LT |
1196 | continue; |
1197 | } else if (strnicmp(data, "ro", 2) == 0) { | |
4b18f2a9 | 1198 | vol->rw = false; |
1da177e4 LT |
1199 | } else if (strnicmp(data, "hard", 4) == 0) { |
1200 | vol->retry = 1; | |
1201 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1202 | vol->retry = 0; | |
1203 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1204 | vol->noperm = 0; | |
1205 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1206 | vol->noperm = 1; | |
6a0b4824 SF |
1207 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1208 | vol->remap = 1; | |
1209 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1210 | vol->remap = 0; | |
50c2f753 SF |
1211 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1212 | vol->sfu_emul = 1; | |
1213 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1214 | vol->sfu_emul = 0; | |
2c1b8615 SF |
1215 | } else if (strnicmp(data, "nodfs", 5) == 0) { |
1216 | vol->nodfs = 1; | |
ac67055e JA |
1217 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1218 | vol->posix_paths = 1; | |
1219 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1220 | vol->posix_paths = 0; | |
c18c842b SF |
1221 | } else if (strnicmp(data, "nounix", 6) == 0) { |
1222 | vol->no_linux_ext = 1; | |
1223 | } else if (strnicmp(data, "nolinux", 7) == 0) { | |
1224 | vol->no_linux_ext = 1; | |
50c2f753 | 1225 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
a10faeb2 | 1226 | (strnicmp(data, "ignorecase", 10) == 0)) { |
50c2f753 | 1227 | vol->nocase = 1; |
c46fa8ac SF |
1228 | } else if (strnicmp(data, "brl", 3) == 0) { |
1229 | vol->nobrl = 0; | |
50c2f753 | 1230 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1231 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1232 | vol->nobrl = 1; |
d3485d37 SF |
1233 | /* turn off mandatory locking in mode |
1234 | if remote locking is turned off since the | |
1235 | local vfs will do advisory */ | |
50c2f753 SF |
1236 | if (vol->file_mode == |
1237 | (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
d3485d37 | 1238 | vol->file_mode = S_IALLUGO; |
1da177e4 LT |
1239 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1240 | vol->setuids = 1; | |
1241 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1242 | vol->setuids = 0; | |
d0a9c078 JL |
1243 | } else if (strnicmp(data, "dynperm", 7) == 0) { |
1244 | vol->dynperm = true; | |
1245 | } else if (strnicmp(data, "nodynperm", 9) == 0) { | |
1246 | vol->dynperm = false; | |
1da177e4 LT |
1247 | } else if (strnicmp(data, "nohard", 6) == 0) { |
1248 | vol->retry = 0; | |
1249 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1250 | vol->retry = 1; | |
1251 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1252 | vol->intr = 0; | |
1253 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1254 | vol->intr = 1; | |
50c2f753 | 1255 | } else if (strnicmp(data, "serverino", 7) == 0) { |
1da177e4 | 1256 | vol->server_ino = 1; |
50c2f753 | 1257 | } else if (strnicmp(data, "noserverino", 9) == 0) { |
1da177e4 | 1258 | vol->server_ino = 0; |
50c2f753 | 1259 | } else if (strnicmp(data, "cifsacl", 7) == 0) { |
0a4b92c0 SF |
1260 | vol->cifs_acl = 1; |
1261 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1262 | vol->cifs_acl = 0; | |
50c2f753 | 1263 | } else if (strnicmp(data, "acl", 3) == 0) { |
1da177e4 | 1264 | vol->no_psx_acl = 0; |
50c2f753 | 1265 | } else if (strnicmp(data, "noacl", 5) == 0) { |
1da177e4 | 1266 | vol->no_psx_acl = 1; |
50c2f753 | 1267 | } else if (strnicmp(data, "sign", 4) == 0) { |
750d1151 | 1268 | vol->secFlg |= CIFSSEC_MUST_SIGN; |
95b1cb90 SF |
1269 | } else if (strnicmp(data, "seal", 4) == 0) { |
1270 | /* we do not do the following in secFlags because seal | |
1271 | is a per tree connection (mount) not a per socket | |
1272 | or per-smb connection option in the protocol */ | |
1273 | /* vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
1274 | vol->seal = 1; | |
50c2f753 | 1275 | } else if (strnicmp(data, "direct", 6) == 0) { |
1da177e4 | 1276 | vol->direct_io = 1; |
50c2f753 | 1277 | } else if (strnicmp(data, "forcedirectio", 13) == 0) { |
1da177e4 | 1278 | vol->direct_io = 1; |
50c2f753 | 1279 | } else if (strnicmp(data, "in6_addr", 8) == 0) { |
1da177e4 LT |
1280 | if (!value || !*value) { |
1281 | vol->in6_addr = NULL; | |
1282 | } else if (strnlen(value, 49) == 48) { | |
1283 | vol->in6_addr = value; | |
1284 | } else { | |
50c2f753 SF |
1285 | printk(KERN_WARNING "CIFS: ip v6 address not " |
1286 | "48 characters long\n"); | |
1da177e4 LT |
1287 | return 1; |
1288 | } | |
1289 | } else if (strnicmp(data, "noac", 4) == 0) { | |
50c2f753 SF |
1290 | printk(KERN_WARNING "CIFS: Mount option noac not " |
1291 | "supported. Instead set " | |
1292 | "/proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1da177e4 | 1293 | } else |
50c2f753 SF |
1294 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n", |
1295 | data); | |
1da177e4 LT |
1296 | } |
1297 | if (vol->UNC == NULL) { | |
4523cc30 | 1298 | if (devname == NULL) { |
50c2f753 SF |
1299 | printk(KERN_WARNING "CIFS: Missing UNC name for mount " |
1300 | "target\n"); | |
1da177e4 LT |
1301 | return 1; |
1302 | } | |
1303 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
50c2f753 | 1304 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1305 | if (vol->UNC == NULL) |
1da177e4 | 1306 | return 1; |
50c2f753 | 1307 | strcpy(vol->UNC, devname); |
1da177e4 LT |
1308 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1309 | vol->UNC[0] = '\\'; | |
1310 | vol->UNC[1] = '\\'; | |
1311 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
50c2f753 SF |
1312 | printk(KERN_WARNING "CIFS: UNC Path does not " |
1313 | "begin with // or \\\\ \n"); | |
1da177e4 LT |
1314 | return 1; |
1315 | } | |
7c5e628f IM |
1316 | value = strpbrk(vol->UNC+2, "/\\"); |
1317 | if (value) | |
1318 | *value = '\\'; | |
1da177e4 LT |
1319 | } else { |
1320 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1321 | return 1; | |
1322 | } | |
1323 | } | |
fb8c4b14 | 1324 | if (vol->UNCip == NULL) |
1da177e4 LT |
1325 | vol->UNCip = &vol->UNC[2]; |
1326 | ||
1327 | return 0; | |
1328 | } | |
1329 | ||
1330 | static struct cifsSesInfo * | |
50c2f753 | 1331 | cifs_find_tcp_session(struct in_addr *target_ip_addr, |
1b20d672 CG |
1332 | struct in6_addr *target_ip6_addr, |
1333 | char *userName, struct TCP_Server_Info **psrvTcp) | |
1da177e4 LT |
1334 | { |
1335 | struct list_head *tmp; | |
1336 | struct cifsSesInfo *ses; | |
1b20d672 | 1337 | |
1da177e4 | 1338 | *psrvTcp = NULL; |
1da177e4 | 1339 | |
1b20d672 | 1340 | read_lock(&GlobalSMBSeslock); |
1da177e4 LT |
1341 | list_for_each(tmp, &GlobalSMBSessionList) { |
1342 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
1b20d672 CG |
1343 | if (!ses->server) |
1344 | continue; | |
1345 | ||
1346 | if (target_ip_addr && | |
1347 | ses->server->addr.sockAddr.sin_addr.s_addr != target_ip_addr->s_addr) | |
1348 | continue; | |
1349 | else if (target_ip6_addr && | |
1350 | memcmp(&ses->server->addr.sockAddr6.sin6_addr, | |
1351 | target_ip6_addr, sizeof(*target_ip6_addr))) | |
1352 | continue; | |
02eadeff | 1353 | /* BB lock server and tcp session; increment use count here?? */ |
1b20d672 CG |
1354 | |
1355 | /* found a match on the TCP session */ | |
1356 | *psrvTcp = ses->server; | |
1357 | ||
1358 | /* BB check if reconnection needed */ | |
1359 | if (strncmp(ses->userName, userName, MAX_USERNAME_SIZE) == 0) { | |
1360 | read_unlock(&GlobalSMBSeslock); | |
1361 | /* Found exact match on both TCP and | |
1362 | SMB sessions */ | |
1363 | return ses; | |
1da177e4 LT |
1364 | } |
1365 | /* else tcp and smb sessions need reconnection */ | |
1366 | } | |
1367 | read_unlock(&GlobalSMBSeslock); | |
1b20d672 | 1368 | |
1da177e4 LT |
1369 | return NULL; |
1370 | } | |
1371 | ||
1372 | static struct cifsTconInfo * | |
1373 | find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) | |
1374 | { | |
1375 | struct list_head *tmp; | |
1376 | struct cifsTconInfo *tcon; | |
dea570e0 | 1377 | __be32 old_ip; |
1da177e4 LT |
1378 | |
1379 | read_lock(&GlobalSMBSeslock); | |
dea570e0 | 1380 | |
1da177e4 | 1381 | list_for_each(tmp, &GlobalTreeConnectionList) { |
e466e487 | 1382 | cFYI(1, ("Next tcon")); |
1da177e4 | 1383 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); |
dea570e0 SF |
1384 | if (!tcon->ses || !tcon->ses->server) |
1385 | continue; | |
1386 | ||
1387 | old_ip = tcon->ses->server->addr.sockAddr.sin_addr.s_addr; | |
1388 | cFYI(1, ("old ip addr: %x == new ip %x ?", | |
1389 | old_ip, new_target_ip_addr)); | |
1390 | ||
1391 | if (old_ip != new_target_ip_addr) | |
1392 | continue; | |
1393 | ||
1394 | /* BB lock tcon, server, tcp session and increment use count? */ | |
1395 | /* found a match on the TCP session */ | |
1396 | /* BB check if reconnection needed */ | |
1397 | cFYI(1, ("IP match, old UNC: %s new: %s", | |
1398 | tcon->treeName, uncName)); | |
1399 | ||
1400 | if (strncmp(tcon->treeName, uncName, MAX_TREE_SIZE)) | |
1401 | continue; | |
1402 | ||
1403 | cFYI(1, ("and old usr: %s new: %s", | |
1404 | tcon->treeName, uncName)); | |
1405 | ||
1406 | if (strncmp(tcon->ses->userName, userName, MAX_USERNAME_SIZE)) | |
1407 | continue; | |
1408 | ||
1409 | /* matched smb session (user name) */ | |
1410 | read_unlock(&GlobalSMBSeslock); | |
1411 | return tcon; | |
1da177e4 | 1412 | } |
dea570e0 | 1413 | |
1da177e4 LT |
1414 | read_unlock(&GlobalSMBSeslock); |
1415 | return NULL; | |
1416 | } | |
1417 | ||
1da177e4 | 1418 | int |
50c2f753 SF |
1419 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, |
1420 | const struct nls_table *nls_codepage, unsigned int *pnum_referrals, | |
366781c1 | 1421 | struct dfs_info3_param **preferrals, int remap) |
1da177e4 LT |
1422 | { |
1423 | char *temp_unc; | |
1424 | int rc = 0; | |
1425 | ||
1426 | *pnum_referrals = 0; | |
366781c1 | 1427 | *preferrals = NULL; |
1da177e4 LT |
1428 | |
1429 | if (pSesInfo->ipc_tid == 0) { | |
1430 | temp_unc = kmalloc(2 /* for slashes */ + | |
50c2f753 SF |
1431 | strnlen(pSesInfo->serverName, |
1432 | SERVER_NAME_LEN_WITH_NULL * 2) | |
1da177e4 LT |
1433 | + 1 + 4 /* slash IPC$ */ + 2, |
1434 | GFP_KERNEL); | |
1435 | if (temp_unc == NULL) | |
1436 | return -ENOMEM; | |
1437 | temp_unc[0] = '\\'; | |
1438 | temp_unc[1] = '\\'; | |
1439 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1440 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1441 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1442 | cFYI(1, | |
50c2f753 | 1443 | ("CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid)); |
1da177e4 LT |
1444 | kfree(temp_unc); |
1445 | } | |
1446 | if (rc == 0) | |
c2cf07d5 | 1447 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, |
737b758c | 1448 | pnum_referrals, nls_codepage, remap); |
366781c1 SF |
1449 | /* BB map targetUNCs to dfs_info3 structures, here or |
1450 | in CIFSGetDFSRefer BB */ | |
1da177e4 LT |
1451 | |
1452 | return rc; | |
1453 | } | |
1454 | ||
09e50d55 JL |
1455 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
1456 | static struct lock_class_key cifs_key[2]; | |
1457 | static struct lock_class_key cifs_slock_key[2]; | |
1458 | ||
1459 | static inline void | |
1460 | cifs_reclassify_socket4(struct socket *sock) | |
1461 | { | |
1462 | struct sock *sk = sock->sk; | |
1463 | BUG_ON(sock_owned_by_user(sk)); | |
1464 | sock_lock_init_class_and_name(sk, "slock-AF_INET-CIFS", | |
1465 | &cifs_slock_key[0], "sk_lock-AF_INET-CIFS", &cifs_key[0]); | |
1466 | } | |
1467 | ||
1468 | static inline void | |
1469 | cifs_reclassify_socket6(struct socket *sock) | |
1470 | { | |
1471 | struct sock *sk = sock->sk; | |
1472 | BUG_ON(sock_owned_by_user(sk)); | |
1473 | sock_lock_init_class_and_name(sk, "slock-AF_INET6-CIFS", | |
1474 | &cifs_slock_key[1], "sk_lock-AF_INET6-CIFS", &cifs_key[1]); | |
1475 | } | |
1476 | #else | |
1477 | static inline void | |
1478 | cifs_reclassify_socket4(struct socket *sock) | |
1479 | { | |
1480 | } | |
1481 | ||
1482 | static inline void | |
1483 | cifs_reclassify_socket6(struct socket *sock) | |
1484 | { | |
1485 | } | |
1486 | #endif | |
1487 | ||
1da177e4 | 1488 | /* See RFC1001 section 14 on representation of Netbios names */ |
50c2f753 | 1489 | static void rfc1002mangle(char *target, char *source, unsigned int length) |
1da177e4 | 1490 | { |
50c2f753 | 1491 | unsigned int i, j; |
1da177e4 | 1492 | |
50c2f753 | 1493 | for (i = 0, j = 0; i < (length); i++) { |
1da177e4 LT |
1494 | /* mask a nibble at a time and encode */ |
1495 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1496 | target[j+1] = 'A' + (0x0F & source[i]); | |
50c2f753 | 1497 | j += 2; |
1da177e4 LT |
1498 | } |
1499 | ||
1500 | } | |
1501 | ||
1502 | ||
1503 | static int | |
50c2f753 SF |
1504 | ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, |
1505 | char *netbios_name, char *target_name) | |
1da177e4 LT |
1506 | { |
1507 | int rc = 0; | |
1508 | int connected = 0; | |
1509 | __be16 orig_port = 0; | |
1510 | ||
fb8c4b14 | 1511 | if (*csocket == NULL) { |
50c2f753 SF |
1512 | rc = sock_create_kern(PF_INET, SOCK_STREAM, |
1513 | IPPROTO_TCP, csocket); | |
1da177e4 | 1514 | if (rc < 0) { |
50c2f753 | 1515 | cERROR(1, ("Error %d creating socket", rc)); |
1da177e4 LT |
1516 | *csocket = NULL; |
1517 | return rc; | |
1518 | } else { | |
1519 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
467a8f8d | 1520 | cFYI(1, ("Socket created")); |
50c2f753 | 1521 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
09e50d55 | 1522 | cifs_reclassify_socket4(*csocket); |
1da177e4 LT |
1523 | } |
1524 | } | |
1525 | ||
1526 | psin_server->sin_family = AF_INET; | |
fb8c4b14 | 1527 | if (psin_server->sin_port) { /* user overrode default port */ |
1da177e4 LT |
1528 | rc = (*csocket)->ops->connect(*csocket, |
1529 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1530 | sizeof(struct sockaddr_in), 0); |
1da177e4 LT |
1531 | if (rc >= 0) |
1532 | connected = 1; | |
50c2f753 | 1533 | } |
1da177e4 | 1534 | |
fb8c4b14 | 1535 | if (!connected) { |
50c2f753 | 1536 | /* save original port so we can retry user specified port |
1da177e4 LT |
1537 | later if fall back ports fail this time */ |
1538 | orig_port = psin_server->sin_port; | |
1539 | ||
1540 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1541 | if (psin_server->sin_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1542 | psin_server->sin_port = htons(CIFS_PORT); |
1543 | ||
1544 | rc = (*csocket)->ops->connect(*csocket, | |
1545 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1546 | sizeof(struct sockaddr_in), 0); |
1da177e4 LT |
1547 | if (rc >= 0) |
1548 | connected = 1; | |
1549 | } | |
1550 | } | |
1551 | if (!connected) { | |
1552 | psin_server->sin_port = htons(RFC1001_PORT); | |
1553 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
50c2f753 | 1554 | psin_server, |
6345a3a8 | 1555 | sizeof(struct sockaddr_in), 0); |
50c2f753 | 1556 | if (rc >= 0) |
1da177e4 LT |
1557 | connected = 1; |
1558 | } | |
1559 | ||
1560 | /* give up here - unless we want to retry on different | |
1561 | protocol families some day */ | |
1562 | if (!connected) { | |
fb8c4b14 | 1563 | if (orig_port) |
1da177e4 | 1564 | psin_server->sin_port = orig_port; |
50c2f753 | 1565 | cFYI(1, ("Error %d connecting to server via ipv4", rc)); |
1da177e4 LT |
1566 | sock_release(*csocket); |
1567 | *csocket = NULL; | |
1568 | return rc; | |
1569 | } | |
50c2f753 SF |
1570 | /* Eventually check for other socket options to change from |
1571 | the default. sock_setsockopt not used because it expects | |
1da177e4 | 1572 | user space buffer */ |
50c2f753 SF |
1573 | cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", |
1574 | (*csocket)->sk->sk_sndbuf, | |
b387eaeb | 1575 | (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo)); |
1da177e4 | 1576 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; |
b387eaeb | 1577 | /* make the bufsizes depend on wsize/rsize and max requests */ |
fb8c4b14 | 1578 | if ((*csocket)->sk->sk_sndbuf < (200 * 1024)) |
b387eaeb | 1579 | (*csocket)->sk->sk_sndbuf = 200 * 1024; |
fb8c4b14 | 1580 | if ((*csocket)->sk->sk_rcvbuf < (140 * 1024)) |
b387eaeb | 1581 | (*csocket)->sk->sk_rcvbuf = 140 * 1024; |
1da177e4 LT |
1582 | |
1583 | /* send RFC1001 sessinit */ | |
fb8c4b14 | 1584 | if (psin_server->sin_port == htons(RFC1001_PORT)) { |
1da177e4 | 1585 | /* some servers require RFC1001 sessinit before sending |
50c2f753 | 1586 | negprot - BB check reconnection in case where second |
1da177e4 | 1587 | sessinit is sent but no second negprot */ |
50c2f753 SF |
1588 | struct rfc1002_session_packet *ses_init_buf; |
1589 | struct smb_hdr *smb_buf; | |
1590 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), | |
1591 | GFP_KERNEL); | |
fb8c4b14 | 1592 | if (ses_init_buf) { |
1da177e4 | 1593 | ses_init_buf->trailer.session_req.called_len = 32; |
fb8c4b14 | 1594 | if (target_name && (target_name[0] != 0)) { |
a10faeb2 SF |
1595 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, |
1596 | target_name, 16); | |
1597 | } else { | |
1598 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
50c2f753 | 1599 | DEFAULT_CIFS_CALLED_NAME, 16); |
a10faeb2 SF |
1600 | } |
1601 | ||
1da177e4 LT |
1602 | ses_init_buf->trailer.session_req.calling_len = 32; |
1603 | /* calling name ends in null (byte 16) from old smb | |
1604 | convention. */ | |
50c2f753 | 1605 | if (netbios_name && (netbios_name[0] != 0)) { |
1da177e4 | 1606 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, |
50c2f753 | 1607 | netbios_name, 16); |
1da177e4 LT |
1608 | } else { |
1609 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
50c2f753 | 1610 | "LINUX_CIFS_CLNT", 16); |
1da177e4 LT |
1611 | } |
1612 | ses_init_buf->trailer.session_req.scope1 = 0; | |
1613 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1614 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1615 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1616 | smb_buf->smb_buf_length = 0x81000044; | |
1617 | rc = smb_send(*csocket, smb_buf, 0x44, | |
1618 | (struct sockaddr *)psin_server); | |
1619 | kfree(ses_init_buf); | |
50c2f753 | 1620 | msleep(1); /* RFC1001 layer in at least one server |
083d3a2c SF |
1621 | requires very short break before negprot |
1622 | presumably because not expecting negprot | |
1623 | to follow so fast. This is a simple | |
50c2f753 | 1624 | solution that works without |
083d3a2c SF |
1625 | complicating the code and causes no |
1626 | significant slowing down on mount | |
1627 | for everyone else */ | |
1da177e4 | 1628 | } |
50c2f753 | 1629 | /* else the negprot may still work without this |
1da177e4 | 1630 | even though malloc failed */ |
50c2f753 | 1631 | |
1da177e4 | 1632 | } |
50c2f753 | 1633 | |
1da177e4 LT |
1634 | return rc; |
1635 | } | |
1636 | ||
1637 | static int | |
1638 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket) | |
1639 | { | |
1640 | int rc = 0; | |
1641 | int connected = 0; | |
1642 | __be16 orig_port = 0; | |
1643 | ||
fb8c4b14 | 1644 | if (*csocket == NULL) { |
50c2f753 SF |
1645 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, |
1646 | IPPROTO_TCP, csocket); | |
1da177e4 | 1647 | if (rc < 0) { |
50c2f753 | 1648 | cERROR(1, ("Error %d creating ipv6 socket", rc)); |
1da177e4 LT |
1649 | *csocket = NULL; |
1650 | return rc; | |
1651 | } else { | |
1652 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
fb8c4b14 | 1653 | cFYI(1, ("ipv6 Socket created")); |
1da177e4 | 1654 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
09e50d55 | 1655 | cifs_reclassify_socket6(*csocket); |
1da177e4 LT |
1656 | } |
1657 | } | |
1658 | ||
1659 | psin_server->sin6_family = AF_INET6; | |
1660 | ||
fb8c4b14 | 1661 | if (psin_server->sin6_port) { /* user overrode default port */ |
1da177e4 LT |
1662 | rc = (*csocket)->ops->connect(*csocket, |
1663 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1664 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1665 | if (rc >= 0) |
1666 | connected = 1; | |
50c2f753 | 1667 | } |
1da177e4 | 1668 | |
fb8c4b14 | 1669 | if (!connected) { |
50c2f753 | 1670 | /* save original port so we can retry user specified port |
1da177e4 LT |
1671 | later if fall back ports fail this time */ |
1672 | ||
1673 | orig_port = psin_server->sin6_port; | |
1674 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1675 | if (psin_server->sin6_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1676 | psin_server->sin6_port = htons(CIFS_PORT); |
1677 | ||
1678 | rc = (*csocket)->ops->connect(*csocket, | |
1679 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1680 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1681 | if (rc >= 0) |
1682 | connected = 1; | |
1683 | } | |
1684 | } | |
1685 | if (!connected) { | |
1686 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1687 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
6345a3a8 | 1688 | psin_server, sizeof(struct sockaddr_in6), 0); |
50c2f753 | 1689 | if (rc >= 0) |
1da177e4 LT |
1690 | connected = 1; |
1691 | } | |
1692 | ||
1693 | /* give up here - unless we want to retry on different | |
1694 | protocol families some day */ | |
1695 | if (!connected) { | |
fb8c4b14 | 1696 | if (orig_port) |
1da177e4 | 1697 | psin_server->sin6_port = orig_port; |
50c2f753 | 1698 | cFYI(1, ("Error %d connecting to server via ipv6", rc)); |
1da177e4 LT |
1699 | sock_release(*csocket); |
1700 | *csocket = NULL; | |
1701 | return rc; | |
1702 | } | |
50c2f753 SF |
1703 | /* Eventually check for other socket options to change from |
1704 | the default. sock_setsockopt not used because it expects | |
1da177e4 LT |
1705 | user space buffer */ |
1706 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
50c2f753 | 1707 | |
1da177e4 LT |
1708 | return rc; |
1709 | } | |
1710 | ||
50c2f753 SF |
1711 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon, |
1712 | struct super_block *sb, struct smb_vol *vol_info) | |
8af18971 SF |
1713 | { |
1714 | /* if we are reconnecting then should we check to see if | |
1715 | * any requested capabilities changed locally e.g. via | |
1716 | * remount but we can not do much about it here | |
1717 | * if they have (even if we could detect it by the following) | |
1718 | * Perhaps we could add a backpointer to array of sb from tcon | |
1719 | * or if we change to make all sb to same share the same | |
1720 | * sb as NFS - then we only have one backpointer to sb. | |
1721 | * What if we wanted to mount the server share twice once with | |
1722 | * and once without posixacls or posix paths? */ | |
1723 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
50c2f753 | 1724 | |
c18c842b SF |
1725 | if (vol_info && vol_info->no_linux_ext) { |
1726 | tcon->fsUnixInfo.Capability = 0; | |
1727 | tcon->unix_ext = 0; /* Unix Extensions disabled */ | |
1728 | cFYI(1, ("Linux protocol extensions disabled")); | |
1729 | return; | |
1730 | } else if (vol_info) | |
1731 | tcon->unix_ext = 1; /* Unix Extensions supported */ | |
1732 | ||
1733 | if (tcon->unix_ext == 0) { | |
1734 | cFYI(1, ("Unix extensions disabled so not set on reconnect")); | |
1735 | return; | |
1736 | } | |
50c2f753 | 1737 | |
fb8c4b14 | 1738 | if (!CIFSSMBQFSUnixInfo(xid, tcon)) { |
8af18971 | 1739 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
50c2f753 | 1740 | |
8af18971 SF |
1741 | /* check for reconnect case in which we do not |
1742 | want to change the mount behavior if we can avoid it */ | |
fb8c4b14 | 1743 | if (vol_info == NULL) { |
50c2f753 | 1744 | /* turn off POSIX ACL and PATHNAMES if not set |
8af18971 SF |
1745 | originally at mount time */ |
1746 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) | |
1747 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
11b6d645 IM |
1748 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1749 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) | |
1750 | cERROR(1, ("POSIXPATH support change")); | |
8af18971 | 1751 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
11b6d645 IM |
1752 | } else if ((cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1753 | cERROR(1, ("possible reconnect error")); | |
1754 | cERROR(1, | |
1755 | ("server disabled POSIX path support")); | |
1756 | } | |
8af18971 | 1757 | } |
50c2f753 | 1758 | |
8af18971 | 1759 | cap &= CIFS_UNIX_CAP_MASK; |
75865f8c | 1760 | if (vol_info && vol_info->no_psx_acl) |
8af18971 | 1761 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
75865f8c | 1762 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
fb8c4b14 SF |
1763 | cFYI(1, ("negotiated posix acl support")); |
1764 | if (sb) | |
8af18971 SF |
1765 | sb->s_flags |= MS_POSIXACL; |
1766 | } | |
1767 | ||
75865f8c | 1768 | if (vol_info && vol_info->posix_paths == 0) |
8af18971 | 1769 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
75865f8c | 1770 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
fb8c4b14 | 1771 | cFYI(1, ("negotiate posix pathnames")); |
75865f8c | 1772 | if (sb) |
50c2f753 | 1773 | CIFS_SB(sb)->mnt_cifs_flags |= |
8af18971 SF |
1774 | CIFS_MOUNT_POSIX_PATHS; |
1775 | } | |
50c2f753 | 1776 | |
984acfe1 SF |
1777 | /* We might be setting the path sep back to a different |
1778 | form if we are reconnecting and the server switched its | |
50c2f753 | 1779 | posix path capability for this share */ |
75865f8c | 1780 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
984acfe1 | 1781 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
75865f8c SF |
1782 | |
1783 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { | |
1784 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { | |
1785 | CIFS_SB(sb)->rsize = 127 * 1024; | |
90c81e0b SF |
1786 | cFYI(DBG2, |
1787 | ("larger reads not supported by srv")); | |
75865f8c SF |
1788 | } |
1789 | } | |
50c2f753 SF |
1790 | |
1791 | ||
1792 | cFYI(1, ("Negotiate caps 0x%x", (int)cap)); | |
8af18971 | 1793 | #ifdef CONFIG_CIFS_DEBUG2 |
75865f8c | 1794 | if (cap & CIFS_UNIX_FCNTL_CAP) |
fb8c4b14 | 1795 | cFYI(1, ("FCNTL cap")); |
75865f8c | 1796 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
fb8c4b14 | 1797 | cFYI(1, ("EXTATTR cap")); |
75865f8c | 1798 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
fb8c4b14 | 1799 | cFYI(1, ("POSIX path cap")); |
75865f8c | 1800 | if (cap & CIFS_UNIX_XATTR_CAP) |
fb8c4b14 | 1801 | cFYI(1, ("XATTR cap")); |
75865f8c | 1802 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
fb8c4b14 | 1803 | cFYI(1, ("POSIX ACL cap")); |
75865f8c | 1804 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
fb8c4b14 | 1805 | cFYI(1, ("very large read cap")); |
75865f8c | 1806 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) |
fb8c4b14 | 1807 | cFYI(1, ("very large write cap")); |
8af18971 SF |
1808 | #endif /* CIFS_DEBUG2 */ |
1809 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
442aa310 | 1810 | if (vol_info == NULL) { |
5a44b319 | 1811 | cFYI(1, ("resetting capabilities failed")); |
442aa310 | 1812 | } else |
5a44b319 SF |
1813 | cERROR(1, ("Negotiating Unix capabilities " |
1814 | "with the server failed. Consider " | |
1815 | "mounting with the Unix Extensions\n" | |
1816 | "disabled, if problems are found, " | |
1817 | "by specifying the nounix mount " | |
2224f4e5 | 1818 | "option.")); |
5a44b319 | 1819 | |
8af18971 SF |
1820 | } |
1821 | } | |
1822 | } | |
1823 | ||
03a143c9 SF |
1824 | static void |
1825 | convert_delimiter(char *path, char delim) | |
1826 | { | |
1827 | int i; | |
c2d68ea6 | 1828 | char old_delim; |
03a143c9 SF |
1829 | |
1830 | if (path == NULL) | |
1831 | return; | |
1832 | ||
582d21e5 | 1833 | if (delim == '/') |
c2d68ea6 SF |
1834 | old_delim = '\\'; |
1835 | else | |
1836 | old_delim = '/'; | |
1837 | ||
03a143c9 | 1838 | for (i = 0; path[i] != '\0'; i++) { |
c2d68ea6 | 1839 | if (path[i] == old_delim) |
03a143c9 SF |
1840 | path[i] = delim; |
1841 | } | |
1842 | } | |
1843 | ||
1da177e4 LT |
1844 | int |
1845 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1846 | char *mount_data, const char *devname) | |
1847 | { | |
1848 | int rc = 0; | |
1849 | int xid; | |
1850 | int address_type = AF_INET; | |
1851 | struct socket *csocket = NULL; | |
1852 | struct sockaddr_in sin_server; | |
1853 | struct sockaddr_in6 sin_server6; | |
1854 | struct smb_vol volume_info; | |
1855 | struct cifsSesInfo *pSesInfo = NULL; | |
1856 | struct cifsSesInfo *existingCifsSes = NULL; | |
1857 | struct cifsTconInfo *tcon = NULL; | |
1858 | struct TCP_Server_Info *srvTcp = NULL; | |
1859 | ||
1860 | xid = GetXid(); | |
1861 | ||
1862 | /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ | |
50c2f753 SF |
1863 | |
1864 | memset(&volume_info, 0, sizeof(struct smb_vol)); | |
1da177e4 | 1865 | if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { |
70fe7dc0 JL |
1866 | rc = -EINVAL; |
1867 | goto out; | |
1da177e4 LT |
1868 | } |
1869 | ||
8426c39c | 1870 | if (volume_info.nullauth) { |
fb8c4b14 | 1871 | cFYI(1, ("null user")); |
9b8f5f57 | 1872 | volume_info.username = ""; |
8426c39c | 1873 | } else if (volume_info.username) { |
1da177e4 | 1874 | /* BB fixme parse for domain name here */ |
467a8f8d | 1875 | cFYI(1, ("Username: %s", volume_info.username)); |
1da177e4 | 1876 | } else { |
bf820679 | 1877 | cifserror("No username specified"); |
50c2f753 SF |
1878 | /* In userspace mount helper we can get user name from alternate |
1879 | locations such as env variables and files on disk */ | |
70fe7dc0 JL |
1880 | rc = -EINVAL; |
1881 | goto out; | |
1da177e4 LT |
1882 | } |
1883 | ||
1884 | if (volume_info.UNCip && volume_info.UNC) { | |
50c2f753 SF |
1885 | rc = cifs_inet_pton(AF_INET, volume_info.UNCip, |
1886 | &sin_server.sin_addr.s_addr); | |
1da177e4 | 1887 | |
fb8c4b14 | 1888 | if (rc <= 0) { |
1da177e4 | 1889 | /* not ipv4 address, try ipv6 */ |
50c2f753 SF |
1890 | rc = cifs_inet_pton(AF_INET6, volume_info.UNCip, |
1891 | &sin_server6.sin6_addr.in6_u); | |
fb8c4b14 | 1892 | if (rc > 0) |
1da177e4 LT |
1893 | address_type = AF_INET6; |
1894 | } else { | |
1895 | address_type = AF_INET; | |
1896 | } | |
50c2f753 | 1897 | |
fb8c4b14 | 1898 | if (rc <= 0) { |
1da177e4 | 1899 | /* we failed translating address */ |
70fe7dc0 JL |
1900 | rc = -EINVAL; |
1901 | goto out; | |
1da177e4 LT |
1902 | } |
1903 | ||
1904 | cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); | |
1905 | /* success */ | |
1906 | rc = 0; | |
50c2f753 SF |
1907 | } else if (volume_info.UNCip) { |
1908 | /* BB using ip addr as server name to connect to the | |
1909 | DFS root below */ | |
1910 | cERROR(1, ("Connecting to DFS root not implemented yet")); | |
70fe7dc0 JL |
1911 | rc = -EINVAL; |
1912 | goto out; | |
1da177e4 LT |
1913 | } else /* which servers DFS root would we conect to */ { |
1914 | cERROR(1, | |
50c2f753 SF |
1915 | ("CIFS mount error: No UNC path (e.g. -o " |
1916 | "unc=//192.168.1.100/public) specified")); | |
70fe7dc0 JL |
1917 | rc = -EINVAL; |
1918 | goto out; | |
1da177e4 LT |
1919 | } |
1920 | ||
1921 | /* this is needed for ASCII cp to Unicode converts */ | |
fb8c4b14 | 1922 | if (volume_info.iocharset == NULL) { |
1da177e4 LT |
1923 | cifs_sb->local_nls = load_nls_default(); |
1924 | /* load_nls_default can not return null */ | |
1925 | } else { | |
1926 | cifs_sb->local_nls = load_nls(volume_info.iocharset); | |
fb8c4b14 | 1927 | if (cifs_sb->local_nls == NULL) { |
50c2f753 SF |
1928 | cERROR(1, ("CIFS mount error: iocharset %s not found", |
1929 | volume_info.iocharset)); | |
70fe7dc0 JL |
1930 | rc = -ELIBACC; |
1931 | goto out; | |
1da177e4 LT |
1932 | } |
1933 | } | |
1934 | ||
fb8c4b14 | 1935 | if (address_type == AF_INET) |
1da177e4 LT |
1936 | existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr, |
1937 | NULL /* no ipv6 addr */, | |
1938 | volume_info.username, &srvTcp); | |
fb8c4b14 SF |
1939 | else if (address_type == AF_INET6) { |
1940 | cFYI(1, ("looking for ipv6 address")); | |
1da177e4 LT |
1941 | existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */, |
1942 | &sin_server6.sin6_addr, | |
1943 | volume_info.username, &srvTcp); | |
5858ae44 | 1944 | } else { |
70fe7dc0 JL |
1945 | rc = -EINVAL; |
1946 | goto out; | |
1da177e4 LT |
1947 | } |
1948 | ||
1da177e4 | 1949 | if (srvTcp) { |
50c2f753 | 1950 | cFYI(1, ("Existing tcp session with server found")); |
1da177e4 | 1951 | } else { /* create socket */ |
4523cc30 | 1952 | if (volume_info.port) |
1da177e4 LT |
1953 | sin_server.sin_port = htons(volume_info.port); |
1954 | else | |
1955 | sin_server.sin_port = 0; | |
5858ae44 | 1956 | if (address_type == AF_INET6) { |
fb8c4b14 | 1957 | cFYI(1, ("attempting ipv6 connect")); |
5858ae44 SF |
1958 | /* BB should we allow ipv6 on port 139? */ |
1959 | /* other OS never observed in Wild doing 139 with v6 */ | |
50c2f753 SF |
1960 | rc = ipv6_connect(&sin_server6, &csocket); |
1961 | } else | |
1962 | rc = ipv4_connect(&sin_server, &csocket, | |
a10faeb2 SF |
1963 | volume_info.source_rfc1001_name, |
1964 | volume_info.target_rfc1001_name); | |
1da177e4 | 1965 | if (rc < 0) { |
50c2f753 SF |
1966 | cERROR(1, ("Error connecting to IPv4 socket. " |
1967 | "Aborting operation")); | |
4523cc30 | 1968 | if (csocket != NULL) |
1da177e4 | 1969 | sock_release(csocket); |
70fe7dc0 | 1970 | goto out; |
1da177e4 LT |
1971 | } |
1972 | ||
a8a11d39 MK |
1973 | srvTcp = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); |
1974 | if (!srvTcp) { | |
1da177e4 LT |
1975 | rc = -ENOMEM; |
1976 | sock_release(csocket); | |
70fe7dc0 | 1977 | goto out; |
1da177e4 | 1978 | } else { |
50c2f753 | 1979 | memcpy(&srvTcp->addr.sockAddr, &sin_server, |
6345a3a8 | 1980 | sizeof(struct sockaddr_in)); |
50c2f753 | 1981 | atomic_set(&srvTcp->inFlight, 0); |
1da177e4 LT |
1982 | /* BB Add code for ipv6 case too */ |
1983 | srvTcp->ssocket = csocket; | |
1984 | srvTcp->protocolType = IPV4; | |
c359cf3c JL |
1985 | srvTcp->hostname = extract_hostname(volume_info.UNC); |
1986 | if (IS_ERR(srvTcp->hostname)) { | |
1987 | rc = PTR_ERR(srvTcp->hostname); | |
1988 | sock_release(csocket); | |
1989 | goto out; | |
1990 | } | |
1da177e4 LT |
1991 | init_waitqueue_head(&srvTcp->response_q); |
1992 | init_waitqueue_head(&srvTcp->request_q); | |
1993 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
1994 | /* at this point we are the only ones with the pointer | |
1995 | to the struct since the kernel thread not created yet | |
1996 | so no need to spinlock this init of tcpStatus */ | |
1997 | srvTcp->tcpStatus = CifsNew; | |
1998 | init_MUTEX(&srvTcp->tcpSem); | |
aaf737ad | 1999 | srvTcp->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, srvTcp, "cifsd"); |
8840dee9 | 2000 | if (IS_ERR(srvTcp->tsk)) { |
aaf737ad | 2001 | rc = PTR_ERR(srvTcp->tsk); |
50c2f753 | 2002 | cERROR(1, ("error %d create cifsd thread", rc)); |
aaf737ad | 2003 | srvTcp->tsk = NULL; |
1da177e4 | 2004 | sock_release(csocket); |
c359cf3c | 2005 | kfree(srvTcp->hostname); |
70fe7dc0 | 2006 | goto out; |
f191401f | 2007 | } |
f191401f | 2008 | rc = 0; |
50c2f753 SF |
2009 | memcpy(srvTcp->workstation_RFC1001_name, |
2010 | volume_info.source_rfc1001_name, 16); | |
2011 | memcpy(srvTcp->server_RFC1001_name, | |
2012 | volume_info.target_rfc1001_name, 16); | |
ad009ac9 | 2013 | srvTcp->sequence_number = 0; |
1da177e4 LT |
2014 | } |
2015 | } | |
2016 | ||
2017 | if (existingCifsSes) { | |
2018 | pSesInfo = existingCifsSes; | |
1d9a8852 JL |
2019 | cFYI(1, ("Existing smb sess found (status=%d)", |
2020 | pSesInfo->status)); | |
88e7d705 | 2021 | down(&pSesInfo->sesSem); |
1d9a8852 JL |
2022 | if (pSesInfo->status == CifsNeedReconnect) { |
2023 | cFYI(1, ("Session needs reconnect")); | |
1d9a8852 JL |
2024 | rc = cifs_setup_session(xid, pSesInfo, |
2025 | cifs_sb->local_nls); | |
1d9a8852 | 2026 | } |
88e7d705 | 2027 | up(&pSesInfo->sesSem); |
1da177e4 | 2028 | } else if (!rc) { |
bf820679 | 2029 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 LT |
2030 | pSesInfo = sesInfoAlloc(); |
2031 | if (pSesInfo == NULL) | |
2032 | rc = -ENOMEM; | |
2033 | else { | |
2034 | pSesInfo->server = srvTcp; | |
2035 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
2036 | NIPQUAD(sin_server.sin_addr.s_addr)); | |
2037 | } | |
2038 | ||
50c2f753 SF |
2039 | if (!rc) { |
2040 | /* volume_info.password freed at unmount */ | |
70fe7dc0 | 2041 | if (volume_info.password) { |
1da177e4 | 2042 | pSesInfo->password = volume_info.password; |
70fe7dc0 JL |
2043 | /* set to NULL to prevent freeing on exit */ |
2044 | volume_info.password = NULL; | |
2045 | } | |
1da177e4 LT |
2046 | if (volume_info.username) |
2047 | strncpy(pSesInfo->userName, | |
50c2f753 SF |
2048 | volume_info.username, |
2049 | MAX_USERNAME_SIZE); | |
3979877e SF |
2050 | if (volume_info.domainname) { |
2051 | int len = strlen(volume_info.domainname); | |
50c2f753 | 2052 | pSesInfo->domainName = |
3979877e | 2053 | kmalloc(len + 1, GFP_KERNEL); |
4523cc30 | 2054 | if (pSesInfo->domainName) |
3979877e SF |
2055 | strcpy(pSesInfo->domainName, |
2056 | volume_info.domainname); | |
2057 | } | |
1da177e4 | 2058 | pSesInfo->linux_uid = volume_info.linux_uid; |
750d1151 | 2059 | pSesInfo->overrideSecFlg = volume_info.secFlg; |
1da177e4 | 2060 | down(&pSesInfo->sesSem); |
189acaae | 2061 | /* BB FIXME need to pass vol->secFlgs BB */ |
50c2f753 SF |
2062 | rc = cifs_setup_session(xid, pSesInfo, |
2063 | cifs_sb->local_nls); | |
1da177e4 | 2064 | up(&pSesInfo->sesSem); |
4523cc30 | 2065 | if (!rc) |
1da177e4 | 2066 | atomic_inc(&srvTcp->socketUseCount); |
70fe7dc0 | 2067 | } |
1da177e4 | 2068 | } |
50c2f753 | 2069 | |
1da177e4 LT |
2070 | /* search for existing tcon to this server share */ |
2071 | if (!rc) { | |
4523cc30 | 2072 | if (volume_info.rsize > CIFSMaxBufSize) { |
50c2f753 | 2073 | cERROR(1, ("rsize %d too large, using MaxBufSize", |
0ae0efad SF |
2074 | volume_info.rsize)); |
2075 | cifs_sb->rsize = CIFSMaxBufSize; | |
75865f8c SF |
2076 | } else if ((volume_info.rsize) && |
2077 | (volume_info.rsize <= CIFSMaxBufSize)) | |
1da177e4 | 2078 | cifs_sb->rsize = volume_info.rsize; |
0ae0efad SF |
2079 | else /* default */ |
2080 | cifs_sb->rsize = CIFSMaxBufSize; | |
2081 | ||
4523cc30 | 2082 | if (volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { |
50c2f753 | 2083 | cERROR(1, ("wsize %d too large, using 4096 instead", |
0ae0efad SF |
2084 | volume_info.wsize)); |
2085 | cifs_sb->wsize = 4096; | |
4523cc30 | 2086 | } else if (volume_info.wsize) |
1da177e4 LT |
2087 | cifs_sb->wsize = volume_info.wsize; |
2088 | else | |
50c2f753 | 2089 | cifs_sb->wsize = |
1877c9ea SF |
2090 | min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE, |
2091 | 127*1024); | |
17cbbafe | 2092 | /* old default of CIFSMaxBufSize was too small now |
50c2f753 | 2093 | that SMB Write2 can send multiple pages in kvec. |
17cbbafe SF |
2094 | RFC1001 does not describe what happens when frame |
2095 | bigger than 128K is sent so use that as max in | |
2096 | conjunction with 52K kvec constraint on arch with 4K | |
2097 | page size */ | |
2098 | ||
4523cc30 | 2099 | if (cifs_sb->rsize < 2048) { |
50c2f753 | 2100 | cifs_sb->rsize = 2048; |
6cec2aed | 2101 | /* Windows ME may prefer this */ |
467a8f8d | 2102 | cFYI(1, ("readsize set to minimum: 2048")); |
1da177e4 | 2103 | } |
2fe87f02 SF |
2104 | /* calculate prepath */ |
2105 | cifs_sb->prepath = volume_info.prepath; | |
4523cc30 | 2106 | if (cifs_sb->prepath) { |
2fe87f02 | 2107 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); |
03a143c9 SF |
2108 | /* we can not convert the / to \ in the path |
2109 | separators in the prefixpath yet because we do not | |
2110 | know (until reset_cifs_unix_caps is called later) | |
2111 | whether POSIX PATH CAP is available. We normalize | |
2112 | the / to \ after reset_cifs_unix_caps is called */ | |
2fe87f02 | 2113 | volume_info.prepath = NULL; |
50c2f753 | 2114 | } else |
2fe87f02 | 2115 | cifs_sb->prepathlen = 0; |
1da177e4 LT |
2116 | cifs_sb->mnt_uid = volume_info.linux_uid; |
2117 | cifs_sb->mnt_gid = volume_info.linux_gid; | |
2118 | cifs_sb->mnt_file_mode = volume_info.file_mode; | |
2119 | cifs_sb->mnt_dir_mode = volume_info.dir_mode; | |
467a8f8d SF |
2120 | cFYI(1, ("file mode: 0x%x dir mode: 0x%x", |
2121 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode)); | |
1da177e4 | 2122 | |
4523cc30 | 2123 | if (volume_info.noperm) |
1da177e4 | 2124 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; |
4523cc30 | 2125 | if (volume_info.setuids) |
1da177e4 | 2126 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; |
4523cc30 | 2127 | if (volume_info.server_ino) |
1da177e4 | 2128 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; |
4523cc30 | 2129 | if (volume_info.remap) |
6a0b4824 | 2130 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; |
4523cc30 | 2131 | if (volume_info.no_xattr) |
1da177e4 | 2132 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; |
4523cc30 | 2133 | if (volume_info.sfu_emul) |
d7245c2c | 2134 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; |
4523cc30 | 2135 | if (volume_info.nobrl) |
c46fa8ac | 2136 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; |
4523cc30 | 2137 | if (volume_info.cifs_acl) |
0a4b92c0 | 2138 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; |
4523cc30 SF |
2139 | if (volume_info.override_uid) |
2140 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; | |
2141 | if (volume_info.override_gid) | |
2142 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; | |
d0a9c078 JL |
2143 | if (volume_info.dynperm) |
2144 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM; | |
4523cc30 | 2145 | if (volume_info.direct_io) { |
467a8f8d | 2146 | cFYI(1, ("mounting share using direct i/o")); |
1da177e4 LT |
2147 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
2148 | } | |
2149 | ||
27adb44c SF |
2150 | if ((volume_info.cifs_acl) && (volume_info.dynperm)) |
2151 | cERROR(1, ("mount option dynperm ignored if cifsacl " | |
2152 | "mount option supported")); | |
2153 | ||
1da177e4 LT |
2154 | tcon = |
2155 | find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, | |
2156 | volume_info.username); | |
2157 | if (tcon) { | |
bf820679 | 2158 | cFYI(1, ("Found match on UNC path")); |
1da177e4 LT |
2159 | /* we can have only one retry value for a connection |
2160 | to a share so for resources mounted more than once | |
50c2f753 | 2161 | to the same server share the last value passed in |
1da177e4 LT |
2162 | for the retry flag is used */ |
2163 | tcon->retry = volume_info.retry; | |
d3485d37 | 2164 | tcon->nocase = volume_info.nocase; |
95b1cb90 SF |
2165 | if (tcon->seal != volume_info.seal) |
2166 | cERROR(1, ("transport encryption setting " | |
2167 | "conflicts with existing tid")); | |
1da177e4 LT |
2168 | } else { |
2169 | tcon = tconInfoAlloc(); | |
2170 | if (tcon == NULL) | |
2171 | rc = -ENOMEM; | |
2172 | else { | |
50c2f753 | 2173 | /* check for null share name ie connecting to |
8af18971 | 2174 | * dfs root */ |
1da177e4 | 2175 | |
50c2f753 | 2176 | /* BB check if this works for exactly length |
8af18971 | 2177 | * three strings */ |
1da177e4 LT |
2178 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) |
2179 | && (strchr(volume_info.UNC + 3, '/') == | |
2180 | NULL)) { | |
646dd539 | 2181 | /* rc = connect_to_dfs_path(xid, pSesInfo, |
8af18971 | 2182 | "", cifs_sb->local_nls, |
50c2f753 | 2183 | cifs_sb->mnt_cifs_flags & |
646dd539 SF |
2184 | CIFS_MOUNT_MAP_SPECIAL_CHR);*/ |
2185 | cFYI(1, ("DFS root not supported")); | |
70fe7dc0 JL |
2186 | rc = -ENODEV; |
2187 | goto out; | |
1da177e4 | 2188 | } else { |
8af18971 SF |
2189 | /* BB Do we need to wrap sesSem around |
2190 | * this TCon call and Unix SetFS as | |
2191 | * we do on SessSetup and reconnect? */ | |
50c2f753 | 2192 | rc = CIFSTCon(xid, pSesInfo, |
1da177e4 LT |
2193 | volume_info.UNC, |
2194 | tcon, cifs_sb->local_nls); | |
2195 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
2c1b8615 SF |
2196 | if (volume_info.nodfs) { |
2197 | tcon->Flags &= | |
2198 | ~SMB_SHARE_IS_IN_DFS; | |
2199 | cFYI(1, ("DFS disabled (%d)", | |
2200 | tcon->Flags)); | |
2201 | } | |
1da177e4 LT |
2202 | } |
2203 | if (!rc) { | |
2204 | atomic_inc(&pSesInfo->inUse); | |
2205 | tcon->retry = volume_info.retry; | |
d3485d37 | 2206 | tcon->nocase = volume_info.nocase; |
95b1cb90 | 2207 | tcon->seal = volume_info.seal; |
1da177e4 LT |
2208 | } |
2209 | } | |
2210 | } | |
2211 | } | |
4523cc30 | 2212 | if (pSesInfo) { |
1da177e4 LT |
2213 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
2214 | sb->s_maxbytes = (u64) 1 << 63; | |
2215 | } else | |
2216 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
2217 | } | |
2218 | ||
8af18971 | 2219 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
1da177e4 LT |
2220 | sb->s_time_gran = 100; |
2221 | ||
2222 | /* on error free sesinfo and tcon struct if needed */ | |
2223 | if (rc) { | |
2224 | /* if session setup failed, use count is zero but | |
2225 | we still need to free cifsd thread */ | |
4523cc30 | 2226 | if (atomic_read(&srvTcp->socketUseCount) == 0) { |
1da177e4 LT |
2227 | spin_lock(&GlobalMid_Lock); |
2228 | srvTcp->tcpStatus = CifsExiting; | |
2229 | spin_unlock(&GlobalMid_Lock); | |
469ee614 | 2230 | force_sig(SIGKILL, srvTcp->tsk); |
1da177e4 LT |
2231 | } |
2232 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
2233 | if (tcon) /* up accidently freeing someone elses tcon struct */ | |
2234 | tconInfoFree(tcon); | |
2235 | if (existingCifsSes == NULL) { | |
2236 | if (pSesInfo) { | |
50c2f753 | 2237 | if ((pSesInfo->server) && |
1da177e4 LT |
2238 | (pSesInfo->status == CifsGood)) { |
2239 | int temp_rc; | |
2240 | temp_rc = CIFSSMBLogoff(xid, pSesInfo); | |
2241 | /* if the socketUseCount is now zero */ | |
4523cc30 | 2242 | if ((temp_rc == -ESHUTDOWN) && |
50c2f753 | 2243 | (pSesInfo->server) && |
469ee614 | 2244 | (pSesInfo->server->tsk)) |
5d9c7206 J |
2245 | force_sig(SIGKILL, |
2246 | pSesInfo->server->tsk); | |
a013689d | 2247 | } else { |
1da177e4 | 2248 | cFYI(1, ("No session or bad tcon")); |
a013689d SF |
2249 | if ((pSesInfo->server) && |
2250 | (pSesInfo->server->tsk)) { | |
469ee614 JL |
2251 | spin_lock(&GlobalMid_Lock); |
2252 | srvTcp->tcpStatus = CifsExiting; | |
2253 | spin_unlock(&GlobalMid_Lock); | |
a013689d SF |
2254 | force_sig(SIGKILL, |
2255 | pSesInfo->server->tsk); | |
a013689d SF |
2256 | } |
2257 | } | |
1da177e4 LT |
2258 | sesInfoFree(pSesInfo); |
2259 | /* pSesInfo = NULL; */ | |
2260 | } | |
2261 | } | |
2262 | } else { | |
2263 | atomic_inc(&tcon->useCount); | |
2264 | cifs_sb->tcon = tcon; | |
2265 | tcon->ses = pSesInfo; | |
2266 | ||
82940a46 | 2267 | /* do not care if following two calls succeed - informational */ |
7f8ed420 SF |
2268 | if (!tcon->ipc) { |
2269 | CIFSSMBQFSDeviceInfo(xid, tcon); | |
2270 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
2271 | } | |
50c2f753 | 2272 | |
8af18971 SF |
2273 | /* tell server which Unix caps we support */ |
2274 | if (tcon->ses->capabilities & CAP_UNIX) | |
c18c842b SF |
2275 | /* reset of caps checks mount to see if unix extensions |
2276 | disabled for just this mount */ | |
8af18971 | 2277 | reset_cifs_unix_caps(xid, tcon, sb, &volume_info); |
c18c842b SF |
2278 | else |
2279 | tcon->unix_ext = 0; /* server does not support them */ | |
2280 | ||
03a143c9 | 2281 | /* convert forward to back slashes in prepath here if needed */ |
11b6d645 IM |
2282 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0) |
2283 | convert_delimiter(cifs_sb->prepath, | |
2284 | CIFS_DIR_SEP(cifs_sb)); | |
03a143c9 | 2285 | |
c18c842b | 2286 | if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) { |
75865f8c | 2287 | cifs_sb->rsize = 1024 * 127; |
90c81e0b SF |
2288 | cFYI(DBG2, |
2289 | ("no very large read support, rsize now 127K")); | |
75865f8c | 2290 | } |
3e84469d SF |
2291 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
2292 | cifs_sb->wsize = min(cifs_sb->wsize, | |
2293 | (tcon->ses->server->maxBuf - | |
2294 | MAX_CIFS_HDR_SIZE)); | |
0ae0efad | 2295 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
50c2f753 SF |
2296 | cifs_sb->rsize = min(cifs_sb->rsize, |
2297 | (tcon->ses->server->maxBuf - | |
2298 | MAX_CIFS_HDR_SIZE)); | |
1da177e4 LT |
2299 | } |
2300 | ||
2301 | /* volume_info.password is freed above when existing session found | |
2302 | (in which case it is not needed anymore) but when new sesion is created | |
2303 | the password ptr is put in the new session structure (in which case the | |
2304 | password will be freed at unmount time) */ | |
70fe7dc0 JL |
2305 | out: |
2306 | /* zero out password before freeing */ | |
2307 | if (volume_info.password != NULL) { | |
2308 | memset(volume_info.password, 0, strlen(volume_info.password)); | |
2309 | kfree(volume_info.password); | |
2310 | } | |
f99d49ad | 2311 | kfree(volume_info.UNC); |
2fe87f02 | 2312 | kfree(volume_info.prepath); |
1da177e4 LT |
2313 | FreeXid(xid); |
2314 | return rc; | |
2315 | } | |
2316 | ||
2317 | static int | |
2318 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 2319 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
2320 | const struct nls_table *nls_codepage) |
2321 | { | |
2322 | struct smb_hdr *smb_buffer; | |
2323 | struct smb_hdr *smb_buffer_response; | |
2324 | SESSION_SETUP_ANDX *pSMB; | |
2325 | SESSION_SETUP_ANDX *pSMBr; | |
2326 | char *bcc_ptr; | |
2327 | char *user; | |
2328 | char *domain; | |
2329 | int rc = 0; | |
2330 | int remaining_words = 0; | |
2331 | int bytes_returned = 0; | |
2332 | int len; | |
2333 | __u32 capabilities; | |
2334 | __u16 count; | |
2335 | ||
eeac8047 | 2336 | cFYI(1, ("In sesssetup")); |
4523cc30 | 2337 | if (ses == NULL) |
1da177e4 LT |
2338 | return -EINVAL; |
2339 | user = ses->userName; | |
2340 | domain = ses->domainName; | |
2341 | smb_buffer = cifs_buf_get(); | |
582d21e5 SF |
2342 | |
2343 | if (smb_buffer == NULL) | |
1da177e4 | 2344 | return -ENOMEM; |
582d21e5 | 2345 | |
1da177e4 LT |
2346 | smb_buffer_response = smb_buffer; |
2347 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2348 | ||
2349 | /* send SMBsessionSetup here */ | |
2350 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2351 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2352 | ||
1982c344 | 2353 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2354 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2355 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2356 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2357 | ||
50c2f753 SF |
2358 | if (ses->server->secMode & |
2359 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
2360 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2361 | ||
2362 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2363 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2364 | if (ses->capabilities & CAP_UNICODE) { | |
2365 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2366 | capabilities |= CAP_UNICODE; | |
2367 | } | |
2368 | if (ses->capabilities & CAP_STATUS32) { | |
2369 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2370 | capabilities |= CAP_STATUS32; | |
2371 | } | |
2372 | if (ses->capabilities & CAP_DFS) { | |
2373 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2374 | capabilities |= CAP_DFS; | |
2375 | } | |
2376 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2377 | ||
50c2f753 | 2378 | pSMB->req_no_secext.CaseInsensitivePasswordLength = |
7c7b25bc | 2379 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2380 | |
2381 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2382 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2383 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2384 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2385 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2386 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2387 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2388 | |
2389 | if (ses->capabilities & CAP_UNICODE) { | |
2390 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2391 | *bcc_ptr = 0; | |
2392 | bcc_ptr++; | |
2393 | } | |
4523cc30 | 2394 | if (user == NULL) |
3979877e | 2395 | bytes_returned = 0; /* skip null user */ |
50c2f753 | 2396 | else |
1da177e4 | 2397 | bytes_returned = |
50c2f753 | 2398 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2399 | nls_codepage); |
2400 | /* convert number of 16 bit words to bytes */ | |
2401 | bcc_ptr += 2 * bytes_returned; | |
2402 | bcc_ptr += 2; /* trailing null */ | |
2403 | if (domain == NULL) | |
2404 | bytes_returned = | |
e89dc920 | 2405 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2406 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2407 | else | |
2408 | bytes_returned = | |
e89dc920 | 2409 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2410 | nls_codepage); |
2411 | bcc_ptr += 2 * bytes_returned; | |
2412 | bcc_ptr += 2; | |
2413 | bytes_returned = | |
e89dc920 | 2414 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2415 | 32, nls_codepage); |
2416 | bcc_ptr += 2 * bytes_returned; | |
2417 | bytes_returned = | |
e9ff3990 | 2418 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, |
1da177e4 LT |
2419 | 32, nls_codepage); |
2420 | bcc_ptr += 2 * bytes_returned; | |
2421 | bcc_ptr += 2; | |
2422 | bytes_returned = | |
e89dc920 | 2423 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2424 | 64, nls_codepage); |
2425 | bcc_ptr += 2 * bytes_returned; | |
2426 | bcc_ptr += 2; | |
2427 | } else { | |
50c2f753 | 2428 | if (user != NULL) { |
1da177e4 LT |
2429 | strncpy(bcc_ptr, user, 200); |
2430 | bcc_ptr += strnlen(user, 200); | |
2431 | } | |
2432 | *bcc_ptr = 0; | |
2433 | bcc_ptr++; | |
2434 | if (domain == NULL) { | |
2435 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2436 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2437 | } else { | |
2438 | strncpy(bcc_ptr, domain, 64); | |
2439 | bcc_ptr += strnlen(domain, 64); | |
2440 | *bcc_ptr = 0; | |
2441 | bcc_ptr++; | |
2442 | } | |
2443 | strcpy(bcc_ptr, "Linux version "); | |
2444 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2445 | strcpy(bcc_ptr, utsname()->release); |
2446 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2447 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2448 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2449 | } | |
2450 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2451 | smb_buffer->smb_buf_length += count; | |
2452 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2453 | ||
2454 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2455 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2456 | if (rc) { |
2457 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2458 | } else if ((smb_buffer_response->WordCount == 3) | |
2459 | || (smb_buffer_response->WordCount == 4)) { | |
2460 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2461 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2462 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2463 | cFYI(1, (" Guest login")); /* BB mark SesInfo struct? */ |
2464 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format | |
2465 | (little endian) */ | |
1da177e4 | 2466 | cFYI(1, ("UID = %d ", ses->Suid)); |
50c2f753 SF |
2467 | /* response can have either 3 or 4 word count - Samba sends 3 */ |
2468 | bcc_ptr = pByteArea(smb_buffer_response); | |
1da177e4 LT |
2469 | if ((pSMBr->resp.hdr.WordCount == 3) |
2470 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2471 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2472 | if (pSMBr->resp.hdr.WordCount == 4) | |
2473 | bcc_ptr += blob_len; | |
2474 | ||
2475 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2476 | if ((long) (bcc_ptr) % 2) { | |
2477 | remaining_words = | |
50c2f753 SF |
2478 | (BCC(smb_buffer_response) - 1) / 2; |
2479 | /* Unicode strings must be word | |
2480 | aligned */ | |
2481 | bcc_ptr++; | |
1da177e4 LT |
2482 | } else { |
2483 | remaining_words = | |
2484 | BCC(smb_buffer_response) / 2; | |
2485 | } | |
2486 | len = | |
2487 | UniStrnlen((wchar_t *) bcc_ptr, | |
2488 | remaining_words - 1); | |
2489 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2490 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2491 | terminating last Unicode string in response */ | |
fb8c4b14 | 2492 | if (ses->serverOS) |
a424f8bf | 2493 | kfree(ses->serverOS); |
50c2f753 SF |
2494 | ses->serverOS = kzalloc(2 * (len + 1), |
2495 | GFP_KERNEL); | |
fb8c4b14 | 2496 | if (ses->serverOS == NULL) |
433dc24f | 2497 | goto sesssetup_nomem; |
1da177e4 | 2498 | cifs_strfromUCS_le(ses->serverOS, |
50c2f753 SF |
2499 | (__le16 *)bcc_ptr, |
2500 | len, nls_codepage); | |
1da177e4 LT |
2501 | bcc_ptr += 2 * (len + 1); |
2502 | remaining_words -= len + 1; | |
2503 | ses->serverOS[2 * len] = 0; | |
2504 | ses->serverOS[1 + (2 * len)] = 0; | |
2505 | if (remaining_words > 0) { | |
2506 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2507 | remaining_words-1); | |
cd49b492 | 2508 | kfree(ses->serverNOS); |
50c2f753 SF |
2509 | ses->serverNOS = kzalloc(2 * (len + 1), |
2510 | GFP_KERNEL); | |
fb8c4b14 | 2511 | if (ses->serverNOS == NULL) |
433dc24f | 2512 | goto sesssetup_nomem; |
1da177e4 | 2513 | cifs_strfromUCS_le(ses->serverNOS, |
50c2f753 SF |
2514 | (__le16 *)bcc_ptr, |
2515 | len, nls_codepage); | |
1da177e4 LT |
2516 | bcc_ptr += 2 * (len + 1); |
2517 | ses->serverNOS[2 * len] = 0; | |
2518 | ses->serverNOS[1 + (2 * len)] = 0; | |
fb8c4b14 | 2519 | if (strncmp(ses->serverNOS, |
50c2f753 | 2520 | "NT LAN Manager 4", 16) == 0) { |
467a8f8d | 2521 | cFYI(1, ("NT4 server")); |
1da177e4 LT |
2522 | ses->flags |= CIFS_SES_NT4; |
2523 | } | |
2524 | remaining_words -= len + 1; | |
2525 | if (remaining_words > 0) { | |
433dc24f | 2526 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
50c2f753 SF |
2527 | /* last string is not always null terminated |
2528 | (for e.g. for Windows XP & 2000) */ | |
fb8c4b14 | 2529 | if (ses->serverDomain) |
a424f8bf | 2530 | kfree(ses->serverDomain); |
1da177e4 | 2531 | ses->serverDomain = |
50c2f753 SF |
2532 | kzalloc(2*(len+1), |
2533 | GFP_KERNEL); | |
fb8c4b14 | 2534 | if (ses->serverDomain == NULL) |
433dc24f | 2535 | goto sesssetup_nomem; |
1da177e4 | 2536 | cifs_strfromUCS_le(ses->serverDomain, |
50c2f753 SF |
2537 | (__le16 *)bcc_ptr, |
2538 | len, nls_codepage); | |
1da177e4 LT |
2539 | bcc_ptr += 2 * (len + 1); |
2540 | ses->serverDomain[2*len] = 0; | |
2541 | ses->serverDomain[1+(2*len)] = 0; | |
50c2f753 SF |
2542 | } else { /* else no more room so create |
2543 | dummy domain string */ | |
fb8c4b14 | 2544 | if (ses->serverDomain) |
a424f8bf | 2545 | kfree(ses->serverDomain); |
50c2f753 | 2546 | ses->serverDomain = |
e915fc49 | 2547 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2548 | } |
50c2f753 SF |
2549 | } else { /* no room so create dummy domain |
2550 | and NOS string */ | |
2551 | ||
433dc24f SF |
2552 | /* if these kcallocs fail not much we |
2553 | can do, but better to not fail the | |
2554 | sesssetup itself */ | |
cd49b492 | 2555 | kfree(ses->serverDomain); |
1da177e4 | 2556 | ses->serverDomain = |
e915fc49 | 2557 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2558 | kfree(ses->serverNOS); |
1da177e4 | 2559 | ses->serverNOS = |
e915fc49 | 2560 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2561 | } |
2562 | } else { /* ASCII */ | |
2563 | len = strnlen(bcc_ptr, 1024); | |
2564 | if (((long) bcc_ptr + len) - (long) | |
2565 | pByteArea(smb_buffer_response) | |
2566 | <= BCC(smb_buffer_response)) { | |
cd49b492 | 2567 | kfree(ses->serverOS); |
50c2f753 SF |
2568 | ses->serverOS = kzalloc(len + 1, |
2569 | GFP_KERNEL); | |
fb8c4b14 | 2570 | if (ses->serverOS == NULL) |
433dc24f | 2571 | goto sesssetup_nomem; |
50c2f753 | 2572 | strncpy(ses->serverOS, bcc_ptr, len); |
1da177e4 LT |
2573 | |
2574 | bcc_ptr += len; | |
50c2f753 SF |
2575 | /* null terminate the string */ |
2576 | bcc_ptr[0] = 0; | |
1da177e4 LT |
2577 | bcc_ptr++; |
2578 | ||
2579 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2580 | kfree(ses->serverNOS); |
50c2f753 SF |
2581 | ses->serverNOS = kzalloc(len + 1, |
2582 | GFP_KERNEL); | |
fb8c4b14 | 2583 | if (ses->serverNOS == NULL) |
433dc24f | 2584 | goto sesssetup_nomem; |
1da177e4 LT |
2585 | strncpy(ses->serverNOS, bcc_ptr, len); |
2586 | bcc_ptr += len; | |
2587 | bcc_ptr[0] = 0; | |
2588 | bcc_ptr++; | |
2589 | ||
2590 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 2591 | if (ses->serverDomain) |
a424f8bf | 2592 | kfree(ses->serverDomain); |
50c2f753 SF |
2593 | ses->serverDomain = kzalloc(len + 1, |
2594 | GFP_KERNEL); | |
fb8c4b14 | 2595 | if (ses->serverDomain == NULL) |
433dc24f | 2596 | goto sesssetup_nomem; |
50c2f753 SF |
2597 | strncpy(ses->serverDomain, bcc_ptr, |
2598 | len); | |
1da177e4 LT |
2599 | bcc_ptr += len; |
2600 | bcc_ptr[0] = 0; | |
2601 | bcc_ptr++; | |
2602 | } else | |
2603 | cFYI(1, | |
50c2f753 SF |
2604 | ("Variable field of length %d " |
2605 | "extends beyond end of smb ", | |
1da177e4 LT |
2606 | len)); |
2607 | } | |
2608 | } else { | |
2609 | cERROR(1, | |
50c2f753 SF |
2610 | (" Security Blob Length extends beyond " |
2611 | "end of SMB")); | |
1da177e4 LT |
2612 | } |
2613 | } else { | |
2614 | cERROR(1, | |
2615 | (" Invalid Word count %d: ", | |
2616 | smb_buffer_response->WordCount)); | |
2617 | rc = -EIO; | |
2618 | } | |
433dc24f SF |
2619 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2620 | since that could make reconnection harder, and | |
2621 | reconnection might be needed to free memory */ | |
a8a11d39 | 2622 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2623 | |
2624 | return rc; | |
2625 | } | |
2626 | ||
1da177e4 LT |
2627 | static int |
2628 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
4b18f2a9 | 2629 | struct cifsSesInfo *ses, bool *pNTLMv2_flag, |
1da177e4 LT |
2630 | const struct nls_table *nls_codepage) |
2631 | { | |
2632 | struct smb_hdr *smb_buffer; | |
2633 | struct smb_hdr *smb_buffer_response; | |
2634 | SESSION_SETUP_ANDX *pSMB; | |
2635 | SESSION_SETUP_ANDX *pSMBr; | |
2636 | char *bcc_ptr; | |
2637 | char *domain; | |
2638 | int rc = 0; | |
2639 | int remaining_words = 0; | |
2640 | int bytes_returned = 0; | |
2641 | int len; | |
6345a3a8 | 2642 | int SecurityBlobLength = sizeof(NEGOTIATE_MESSAGE); |
1da177e4 LT |
2643 | PNEGOTIATE_MESSAGE SecurityBlob; |
2644 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2645 | __u32 negotiate_flags, capabilities; | |
2646 | __u16 count; | |
2647 | ||
12b3b8ff | 2648 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
fb8c4b14 | 2649 | if (ses == NULL) |
1da177e4 LT |
2650 | return -EINVAL; |
2651 | domain = ses->domainName; | |
4b18f2a9 | 2652 | *pNTLMv2_flag = false; |
1da177e4 LT |
2653 | smb_buffer = cifs_buf_get(); |
2654 | if (smb_buffer == NULL) { | |
2655 | return -ENOMEM; | |
2656 | } | |
2657 | smb_buffer_response = smb_buffer; | |
2658 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2659 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2660 | ||
2661 | /* send SMBsessionSetup here */ | |
2662 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2663 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2664 | |
2665 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2666 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2667 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2668 | ||
2669 | pSMB->req.AndXCommand = 0xFF; | |
2670 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2671 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2672 | ||
fb8c4b14 | 2673 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2674 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2675 | ||
2676 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2677 | CAP_EXTENDED_SECURITY; | |
2678 | if (ses->capabilities & CAP_UNICODE) { | |
2679 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2680 | capabilities |= CAP_UNICODE; | |
2681 | } | |
2682 | if (ses->capabilities & CAP_STATUS32) { | |
2683 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2684 | capabilities |= CAP_STATUS32; | |
2685 | } | |
2686 | if (ses->capabilities & CAP_DFS) { | |
2687 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2688 | capabilities |= CAP_DFS; | |
2689 | } | |
2690 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2691 | ||
2692 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2693 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2694 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2695 | SecurityBlob->MessageType = NtLmNegotiate; | |
2696 | negotiate_flags = | |
2697 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2698 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2699 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 | 2700 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
fb8c4b14 | 2701 | if (sign_CIFS_PDUs) |
1da177e4 | 2702 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 2703 | /* if (ntlmv2_support) |
3979877e | 2704 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ |
1da177e4 LT |
2705 | /* setup pointers to domain name and workstation name */ |
2706 | bcc_ptr += SecurityBlobLength; | |
2707 | ||
2708 | SecurityBlob->WorkstationName.Buffer = 0; | |
2709 | SecurityBlob->WorkstationName.Length = 0; | |
2710 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2711 | ||
12b3b8ff SF |
2712 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2713 | along with username on auth request (ie the response to challenge) */ | |
2714 | SecurityBlob->DomainName.Buffer = 0; | |
2715 | SecurityBlob->DomainName.Length = 0; | |
2716 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2717 | if (ses->capabilities & CAP_UNICODE) { |
2718 | if ((long) bcc_ptr % 2) { | |
2719 | *bcc_ptr = 0; | |
2720 | bcc_ptr++; | |
2721 | } | |
2722 | ||
2723 | bytes_returned = | |
e89dc920 | 2724 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2725 | 32, nls_codepage); |
2726 | bcc_ptr += 2 * bytes_returned; | |
2727 | bytes_returned = | |
e9ff3990 | 2728 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2729 | nls_codepage); |
2730 | bcc_ptr += 2 * bytes_returned; | |
2731 | bcc_ptr += 2; /* null terminate Linux version */ | |
2732 | bytes_returned = | |
e89dc920 | 2733 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2734 | 64, nls_codepage); |
2735 | bcc_ptr += 2 * bytes_returned; | |
2736 | *(bcc_ptr + 1) = 0; | |
2737 | *(bcc_ptr + 2) = 0; | |
2738 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2739 | *(bcc_ptr + 1) = 0; | |
2740 | *(bcc_ptr + 2) = 0; | |
2741 | bcc_ptr += 2; /* null domain */ | |
2742 | } else { /* ASCII */ | |
2743 | strcpy(bcc_ptr, "Linux version "); | |
2744 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2745 | strcpy(bcc_ptr, utsname()->release); |
2746 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2747 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2748 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2749 | bcc_ptr++; /* empty domain field */ | |
2750 | *bcc_ptr = 0; | |
2751 | } | |
2752 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2753 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2754 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2755 | smb_buffer->smb_buf_length += count; | |
2756 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2757 | ||
2758 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2759 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2760 | |
2761 | if (smb_buffer_response->Status.CifsError == | |
2762 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2763 | rc = 0; | |
2764 | ||
2765 | if (rc) { | |
2766 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2767 | } else if ((smb_buffer_response->WordCount == 3) | |
2768 | || (smb_buffer_response->WordCount == 4)) { | |
2769 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2770 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2771 | ||
2772 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2773 | cFYI(1, (" Guest login")); |
2774 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
1da177e4 | 2775 | |
50c2f753 SF |
2776 | bcc_ptr = pByteArea(smb_buffer_response); |
2777 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
2778 | |
2779 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2780 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2781 | cFYI(1, | |
2782 | ("Unexpected NTLMSSP message type received %d", | |
2783 | SecurityBlob2->MessageType)); | |
2784 | } else if (ses) { | |
50c2f753 | 2785 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ |
12b3b8ff | 2786 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2787 | if ((pSMBr->resp.hdr.WordCount == 3) |
2788 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2789 | && (blob_len < | |
2790 | pSMBr->resp.ByteCount))) { | |
2791 | ||
2792 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2793 | bcc_ptr += blob_len; | |
12b3b8ff | 2794 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2795 | blob_len)); |
2796 | } | |
2797 | ||
12b3b8ff | 2798 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2799 | |
2800 | memcpy(ses->server->cryptKey, | |
2801 | SecurityBlob2->Challenge, | |
2802 | CIFS_CRYPTO_KEY_SIZE); | |
50c2f753 | 2803 | if (SecurityBlob2->NegotiateFlags & |
12b3b8ff | 2804 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) |
4b18f2a9 | 2805 | *pNTLMv2_flag = true; |
1da177e4 | 2806 | |
50c2f753 SF |
2807 | if ((SecurityBlob2->NegotiateFlags & |
2808 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
1da177e4 | 2809 | || (sign_CIFS_PDUs > 1)) |
50c2f753 SF |
2810 | ses->server->secMode |= |
2811 | SECMODE_SIGN_REQUIRED; | |
2812 | if ((SecurityBlob2->NegotiateFlags & | |
1da177e4 | 2813 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) |
50c2f753 | 2814 | ses->server->secMode |= |
1da177e4 LT |
2815 | SECMODE_SIGN_ENABLED; |
2816 | ||
2817 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2818 | if ((long) (bcc_ptr) % 2) { | |
2819 | remaining_words = | |
2820 | (BCC(smb_buffer_response) | |
2821 | - 1) / 2; | |
50c2f753 SF |
2822 | /* Must word align unicode strings */ |
2823 | bcc_ptr++; | |
1da177e4 LT |
2824 | } else { |
2825 | remaining_words = | |
2826 | BCC | |
2827 | (smb_buffer_response) / 2; | |
2828 | } | |
2829 | len = | |
2830 | UniStrnlen((wchar_t *) bcc_ptr, | |
2831 | remaining_words - 1); | |
2832 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2833 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2834 | terminating last Unicode string in response */ | |
fb8c4b14 | 2835 | if (ses->serverOS) |
a424f8bf | 2836 | kfree(ses->serverOS); |
1da177e4 | 2837 | ses->serverOS = |
e915fc49 | 2838 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2839 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2840 | (__le16 *) |
1da177e4 LT |
2841 | bcc_ptr, len, |
2842 | nls_codepage); | |
2843 | bcc_ptr += 2 * (len + 1); | |
2844 | remaining_words -= len + 1; | |
2845 | ses->serverOS[2 * len] = 0; | |
2846 | ses->serverOS[1 + (2 * len)] = 0; | |
2847 | if (remaining_words > 0) { | |
2848 | len = UniStrnlen((wchar_t *) | |
2849 | bcc_ptr, | |
2850 | remaining_words | |
2851 | - 1); | |
cd49b492 | 2852 | kfree(ses->serverNOS); |
1da177e4 | 2853 | ses->serverNOS = |
e915fc49 | 2854 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2855 | GFP_KERNEL); |
2856 | cifs_strfromUCS_le(ses-> | |
2857 | serverNOS, | |
e89dc920 | 2858 | (__le16 *) |
1da177e4 LT |
2859 | bcc_ptr, |
2860 | len, | |
2861 | nls_codepage); | |
2862 | bcc_ptr += 2 * (len + 1); | |
2863 | ses->serverNOS[2 * len] = 0; | |
2864 | ses->serverNOS[1 + | |
2865 | (2 * len)] = 0; | |
2866 | remaining_words -= len + 1; | |
2867 | if (remaining_words > 0) { | |
50c2f753 SF |
2868 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
2869 | /* last string not always null terminated | |
2870 | (for e.g. for Windows XP & 2000) */ | |
cd49b492 | 2871 | kfree(ses->serverDomain); |
1da177e4 | 2872 | ses->serverDomain = |
e915fc49 | 2873 | kzalloc(2 * |
1da177e4 LT |
2874 | (len + |
2875 | 1), | |
2876 | GFP_KERNEL); | |
2877 | cifs_strfromUCS_le | |
e89dc920 SF |
2878 | (ses->serverDomain, |
2879 | (__le16 *)bcc_ptr, | |
2880 | len, nls_codepage); | |
1da177e4 LT |
2881 | bcc_ptr += |
2882 | 2 * (len + 1); | |
e89dc920 | 2883 | ses->serverDomain[2*len] |
1da177e4 | 2884 | = 0; |
e89dc920 SF |
2885 | ses->serverDomain |
2886 | [1 + (2 * len)] | |
1da177e4 LT |
2887 | = 0; |
2888 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 2889 | else { |
cd49b492 | 2890 | kfree(ses->serverDomain); |
1da177e4 | 2891 | ses->serverDomain = |
e915fc49 | 2892 | kzalloc(2, |
1da177e4 | 2893 | GFP_KERNEL); |
a424f8bf | 2894 | } |
1da177e4 | 2895 | } else { /* no room so create dummy domain and NOS string */ |
cd49b492 | 2896 | kfree(ses->serverDomain); |
1da177e4 | 2897 | ses->serverDomain = |
e915fc49 | 2898 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2899 | kfree(ses->serverNOS); |
1da177e4 | 2900 | ses->serverNOS = |
e915fc49 | 2901 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2902 | } |
2903 | } else { /* ASCII */ | |
2904 | len = strnlen(bcc_ptr, 1024); | |
2905 | if (((long) bcc_ptr + len) - (long) | |
2906 | pByteArea(smb_buffer_response) | |
2907 | <= BCC(smb_buffer_response)) { | |
fb8c4b14 | 2908 | if (ses->serverOS) |
a424f8bf | 2909 | kfree(ses->serverOS); |
1da177e4 | 2910 | ses->serverOS = |
e915fc49 | 2911 | kzalloc(len + 1, |
1da177e4 LT |
2912 | GFP_KERNEL); |
2913 | strncpy(ses->serverOS, | |
2914 | bcc_ptr, len); | |
2915 | ||
2916 | bcc_ptr += len; | |
2917 | bcc_ptr[0] = 0; /* null terminate string */ | |
2918 | bcc_ptr++; | |
2919 | ||
2920 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2921 | kfree(ses->serverNOS); |
1da177e4 | 2922 | ses->serverNOS = |
e915fc49 | 2923 | kzalloc(len + 1, |
1da177e4 LT |
2924 | GFP_KERNEL); |
2925 | strncpy(ses->serverNOS, bcc_ptr, len); | |
2926 | bcc_ptr += len; | |
2927 | bcc_ptr[0] = 0; | |
2928 | bcc_ptr++; | |
2929 | ||
2930 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2931 | kfree(ses->serverDomain); |
1da177e4 | 2932 | ses->serverDomain = |
e915fc49 | 2933 | kzalloc(len + 1, |
1da177e4 | 2934 | GFP_KERNEL); |
50c2f753 SF |
2935 | strncpy(ses->serverDomain, |
2936 | bcc_ptr, len); | |
1da177e4 LT |
2937 | bcc_ptr += len; |
2938 | bcc_ptr[0] = 0; | |
2939 | bcc_ptr++; | |
2940 | } else | |
2941 | cFYI(1, | |
63135e08 SF |
2942 | ("field of length %d " |
2943 | "extends beyond end of smb", | |
1da177e4 LT |
2944 | len)); |
2945 | } | |
2946 | } else { | |
50c2f753 SF |
2947 | cERROR(1, ("Security Blob Length extends beyond" |
2948 | " end of SMB")); | |
1da177e4 LT |
2949 | } |
2950 | } else { | |
2951 | cERROR(1, ("No session structure passed in.")); | |
2952 | } | |
2953 | } else { | |
2954 | cERROR(1, | |
5815449d | 2955 | (" Invalid Word count %d:", |
1da177e4 LT |
2956 | smb_buffer_response->WordCount)); |
2957 | rc = -EIO; | |
2958 | } | |
2959 | ||
a8a11d39 | 2960 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2961 | |
2962 | return rc; | |
2963 | } | |
2964 | static int | |
2965 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
4b18f2a9 | 2966 | char *ntlm_session_key, bool ntlmv2_flag, |
6345a3a8 | 2967 | const struct nls_table *nls_codepage) |
1da177e4 LT |
2968 | { |
2969 | struct smb_hdr *smb_buffer; | |
2970 | struct smb_hdr *smb_buffer_response; | |
2971 | SESSION_SETUP_ANDX *pSMB; | |
2972 | SESSION_SETUP_ANDX *pSMBr; | |
2973 | char *bcc_ptr; | |
2974 | char *user; | |
2975 | char *domain; | |
2976 | int rc = 0; | |
2977 | int remaining_words = 0; | |
2978 | int bytes_returned = 0; | |
2979 | int len; | |
6345a3a8 | 2980 | int SecurityBlobLength = sizeof(AUTHENTICATE_MESSAGE); |
1da177e4 LT |
2981 | PAUTHENTICATE_MESSAGE SecurityBlob; |
2982 | __u32 negotiate_flags, capabilities; | |
2983 | __u16 count; | |
2984 | ||
2985 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
fb8c4b14 | 2986 | if (ses == NULL) |
1da177e4 LT |
2987 | return -EINVAL; |
2988 | user = ses->userName; | |
2989 | domain = ses->domainName; | |
2990 | smb_buffer = cifs_buf_get(); | |
2991 | if (smb_buffer == NULL) { | |
2992 | return -ENOMEM; | |
2993 | } | |
2994 | smb_buffer_response = smb_buffer; | |
6345a3a8 CG |
2995 | pSMB = (SESSION_SETUP_ANDX *)smb_buffer; |
2996 | pSMBr = (SESSION_SETUP_ANDX *)smb_buffer_response; | |
1da177e4 LT |
2997 | |
2998 | /* send SMBsessionSetup here */ | |
2999 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
3000 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
3001 | |
3002 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3003 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
3004 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
3005 | pSMB->req.AndXCommand = 0xFF; | |
3006 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
3007 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
3008 | ||
3009 | pSMB->req.hdr.Uid = ses->Suid; | |
3010 | ||
fb8c4b14 | 3011 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3012 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3013 | ||
3014 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
6345a3a8 | 3015 | CAP_EXTENDED_SECURITY; |
1da177e4 LT |
3016 | if (ses->capabilities & CAP_UNICODE) { |
3017 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3018 | capabilities |= CAP_UNICODE; | |
3019 | } | |
3020 | if (ses->capabilities & CAP_STATUS32) { | |
3021 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3022 | capabilities |= CAP_STATUS32; | |
3023 | } | |
3024 | if (ses->capabilities & CAP_DFS) { | |
3025 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3026 | capabilities |= CAP_DFS; | |
3027 | } | |
3028 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
3029 | ||
6345a3a8 CG |
3030 | bcc_ptr = (char *)&pSMB->req.SecurityBlob; |
3031 | SecurityBlob = (PAUTHENTICATE_MESSAGE)bcc_ptr; | |
1da177e4 LT |
3032 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); |
3033 | SecurityBlob->MessageType = NtLmAuthenticate; | |
3034 | bcc_ptr += SecurityBlobLength; | |
6345a3a8 CG |
3035 | negotiate_flags = NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | |
3036 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
3037 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
fb8c4b14 | 3038 | if (sign_CIFS_PDUs) |
1da177e4 | 3039 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 3040 | if (ntlmv2_flag) |
1da177e4 LT |
3041 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; |
3042 | ||
3043 | /* setup pointers to domain name and workstation name */ | |
3044 | ||
3045 | SecurityBlob->WorkstationName.Buffer = 0; | |
3046 | SecurityBlob->WorkstationName.Length = 0; | |
3047 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
3048 | SecurityBlob->SessionKey.Length = 0; | |
3049 | SecurityBlob->SessionKey.MaximumLength = 0; | |
3050 | SecurityBlob->SessionKey.Buffer = 0; | |
3051 | ||
3052 | SecurityBlob->LmChallengeResponse.Length = 0; | |
3053 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
3054 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
3055 | ||
3056 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 3057 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 3058 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
3059 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
3060 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
3061 | SecurityBlob->NtChallengeResponse.Buffer = |
3062 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
3063 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
3064 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
3065 | |
3066 | if (ses->capabilities & CAP_UNICODE) { | |
3067 | if (domain == NULL) { | |
3068 | SecurityBlob->DomainName.Buffer = 0; | |
3069 | SecurityBlob->DomainName.Length = 0; | |
3070 | SecurityBlob->DomainName.MaximumLength = 0; | |
3071 | } else { | |
77159b4d | 3072 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 | 3073 | nls_codepage); |
77159b4d | 3074 | ln *= 2; |
1da177e4 | 3075 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3076 | cpu_to_le16(ln); |
1da177e4 LT |
3077 | SecurityBlob->DomainName.Buffer = |
3078 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3079 | bcc_ptr += ln; |
3080 | SecurityBlobLength += ln; | |
3081 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3082 | } |
3083 | if (user == NULL) { | |
3084 | SecurityBlob->UserName.Buffer = 0; | |
3085 | SecurityBlob->UserName.Length = 0; | |
3086 | SecurityBlob->UserName.MaximumLength = 0; | |
3087 | } else { | |
77159b4d | 3088 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 | 3089 | nls_codepage); |
77159b4d | 3090 | ln *= 2; |
1da177e4 | 3091 | SecurityBlob->UserName.MaximumLength = |
77159b4d | 3092 | cpu_to_le16(ln); |
1da177e4 LT |
3093 | SecurityBlob->UserName.Buffer = |
3094 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3095 | bcc_ptr += ln; |
3096 | SecurityBlobLength += ln; | |
3097 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3098 | } |
3099 | ||
63135e08 SF |
3100 | /* SecurityBlob->WorkstationName.Length = |
3101 | cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); | |
1da177e4 | 3102 | SecurityBlob->WorkstationName.Length *= 2; |
63135e08 SF |
3103 | SecurityBlob->WorkstationName.MaximumLength = |
3104 | cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
3105 | SecurityBlob->WorkstationName.Buffer = | |
3106 | cpu_to_le32(SecurityBlobLength); | |
1da177e4 LT |
3107 | bcc_ptr += SecurityBlob->WorkstationName.Length; |
3108 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
63135e08 SF |
3109 | SecurityBlob->WorkstationName.Length = |
3110 | cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
1da177e4 LT |
3111 | |
3112 | if ((long) bcc_ptr % 2) { | |
3113 | *bcc_ptr = 0; | |
3114 | bcc_ptr++; | |
3115 | } | |
3116 | bytes_returned = | |
e89dc920 | 3117 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
3118 | 32, nls_codepage); |
3119 | bcc_ptr += 2 * bytes_returned; | |
3120 | bytes_returned = | |
e9ff3990 | 3121 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
3122 | nls_codepage); |
3123 | bcc_ptr += 2 * bytes_returned; | |
3124 | bcc_ptr += 2; /* null term version string */ | |
3125 | bytes_returned = | |
e89dc920 | 3126 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
3127 | 64, nls_codepage); |
3128 | bcc_ptr += 2 * bytes_returned; | |
3129 | *(bcc_ptr + 1) = 0; | |
3130 | *(bcc_ptr + 2) = 0; | |
3131 | bcc_ptr += 2; /* null terminate network opsys string */ | |
3132 | *(bcc_ptr + 1) = 0; | |
3133 | *(bcc_ptr + 2) = 0; | |
3134 | bcc_ptr += 2; /* null domain */ | |
3135 | } else { /* ASCII */ | |
3136 | if (domain == NULL) { | |
3137 | SecurityBlob->DomainName.Buffer = 0; | |
3138 | SecurityBlob->DomainName.Length = 0; | |
3139 | SecurityBlob->DomainName.MaximumLength = 0; | |
3140 | } else { | |
77159b4d | 3141 | __u16 ln; |
1da177e4 LT |
3142 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; |
3143 | strncpy(bcc_ptr, domain, 63); | |
77159b4d | 3144 | ln = strnlen(domain, 64); |
1da177e4 | 3145 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3146 | cpu_to_le16(ln); |
1da177e4 LT |
3147 | SecurityBlob->DomainName.Buffer = |
3148 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3149 | bcc_ptr += ln; |
3150 | SecurityBlobLength += ln; | |
3151 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3152 | } |
3153 | if (user == NULL) { | |
3154 | SecurityBlob->UserName.Buffer = 0; | |
3155 | SecurityBlob->UserName.Length = 0; | |
3156 | SecurityBlob->UserName.MaximumLength = 0; | |
3157 | } else { | |
77159b4d | 3158 | __u16 ln; |
1da177e4 | 3159 | strncpy(bcc_ptr, user, 63); |
77159b4d SF |
3160 | ln = strnlen(user, 64); |
3161 | SecurityBlob->UserName.MaximumLength = cpu_to_le16(ln); | |
1da177e4 | 3162 | SecurityBlob->UserName.Buffer = |
77159b4d SF |
3163 | cpu_to_le32(SecurityBlobLength); |
3164 | bcc_ptr += ln; | |
3165 | SecurityBlobLength += ln; | |
3166 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3167 | } |
3168 | /* BB fill in our workstation name if known BB */ | |
3169 | ||
3170 | strcpy(bcc_ptr, "Linux version "); | |
3171 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
3172 | strcpy(bcc_ptr, utsname()->release); |
3173 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
3174 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
3175 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
3176 | bcc_ptr++; /* null domain */ | |
3177 | *bcc_ptr = 0; | |
3178 | } | |
3179 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
3180 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
3181 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
3182 | smb_buffer->smb_buf_length += count; | |
3183 | pSMB->req.ByteCount = cpu_to_le16(count); | |
3184 | ||
3185 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 3186 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 | 3187 | if (rc) { |
6345a3a8 CG |
3188 | /* rc = map_smb_to_linux_error(smb_buffer_response) done in SendReceive now */ |
3189 | } else if ((smb_buffer_response->WordCount == 3) || | |
3190 | (smb_buffer_response->WordCount == 4)) { | |
1da177e4 | 3191 | __u16 action = le16_to_cpu(pSMBr->resp.Action); |
6345a3a8 | 3192 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); |
1da177e4 | 3193 | if (action & GUEST_LOGIN) |
50c2f753 SF |
3194 | cFYI(1, (" Guest login")); /* BB Should we set anything |
3195 | in SesInfo struct ? */ | |
3196 | /* if (SecurityBlob2->MessageType != NtLm??) { | |
3197 | cFYI("Unexpected message type on auth response is %d")); | |
3198 | } */ | |
3199 | ||
1da177e4 LT |
3200 | if (ses) { |
3201 | cFYI(1, | |
50c2f753 | 3202 | ("Check challenge UID %d vs auth response UID %d", |
1da177e4 | 3203 | ses->Suid, smb_buffer_response->Uid)); |
50c2f753 SF |
3204 | /* UID left in wire format */ |
3205 | ses->Suid = smb_buffer_response->Uid; | |
3206 | bcc_ptr = pByteArea(smb_buffer_response); | |
3207 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
3208 | if ((pSMBr->resp.hdr.WordCount == 3) |
3209 | || ((pSMBr->resp.hdr.WordCount == 4) | |
3210 | && (blob_len < | |
3211 | pSMBr->resp.ByteCount))) { | |
3212 | if (pSMBr->resp.hdr.WordCount == 4) { | |
3213 | bcc_ptr += | |
3214 | blob_len; | |
3215 | cFYI(1, | |
3216 | ("Security Blob Length %d ", | |
3217 | blob_len)); | |
3218 | } | |
3219 | ||
3220 | cFYI(1, | |
3221 | ("NTLMSSP response to Authenticate ")); | |
3222 | ||
3223 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3224 | if ((long) (bcc_ptr) % 2) { | |
3225 | remaining_words = | |
3226 | (BCC(smb_buffer_response) | |
3227 | - 1) / 2; | |
3228 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
3229 | } else { | |
3230 | remaining_words = BCC(smb_buffer_response) / 2; | |
3231 | } | |
77159b4d SF |
3232 | len = UniStrnlen((wchar_t *) bcc_ptr, |
3233 | remaining_words - 1); | |
1da177e4 LT |
3234 | /* We look for obvious messed up bcc or strings in response so we do not go off |
3235 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
3236 | terminating last Unicode string in response */ | |
fb8c4b14 | 3237 | if (ses->serverOS) |
08775834 | 3238 | kfree(ses->serverOS); |
1da177e4 | 3239 | ses->serverOS = |
e915fc49 | 3240 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 3241 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 3242 | (__le16 *) |
1da177e4 LT |
3243 | bcc_ptr, len, |
3244 | nls_codepage); | |
3245 | bcc_ptr += 2 * (len + 1); | |
3246 | remaining_words -= len + 1; | |
3247 | ses->serverOS[2 * len] = 0; | |
3248 | ses->serverOS[1 + (2 * len)] = 0; | |
3249 | if (remaining_words > 0) { | |
3250 | len = UniStrnlen((wchar_t *) | |
3251 | bcc_ptr, | |
3252 | remaining_words | |
3253 | - 1); | |
cd49b492 | 3254 | kfree(ses->serverNOS); |
1da177e4 | 3255 | ses->serverNOS = |
e915fc49 | 3256 | kzalloc(2 * (len + 1), |
1da177e4 LT |
3257 | GFP_KERNEL); |
3258 | cifs_strfromUCS_le(ses-> | |
3259 | serverNOS, | |
e89dc920 | 3260 | (__le16 *) |
1da177e4 LT |
3261 | bcc_ptr, |
3262 | len, | |
3263 | nls_codepage); | |
3264 | bcc_ptr += 2 * (len + 1); | |
3265 | ses->serverNOS[2 * len] = 0; | |
3266 | ses->serverNOS[1+(2*len)] = 0; | |
3267 | remaining_words -= len + 1; | |
3268 | if (remaining_words > 0) { | |
50c2f753 | 3269 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 3270 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ |
fb8c4b14 | 3271 | if (ses->serverDomain) |
a424f8bf | 3272 | kfree(ses->serverDomain); |
1da177e4 | 3273 | ses->serverDomain = |
e915fc49 | 3274 | kzalloc(2 * |
1da177e4 LT |
3275 | (len + |
3276 | 1), | |
3277 | GFP_KERNEL); | |
3278 | cifs_strfromUCS_le | |
3279 | (ses-> | |
3280 | serverDomain, | |
e89dc920 | 3281 | (__le16 *) |
1da177e4 LT |
3282 | bcc_ptr, len, |
3283 | nls_codepage); | |
3284 | bcc_ptr += | |
3285 | 2 * (len + 1); | |
3286 | ses-> | |
3287 | serverDomain[2 | |
3288 | * len] | |
3289 | = 0; | |
3290 | ses-> | |
3291 | serverDomain[1 | |
3292 | + | |
3293 | (2 | |
3294 | * | |
3295 | len)] | |
3296 | = 0; | |
3297 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 3298 | else { |
fb8c4b14 | 3299 | if (ses->serverDomain) |
a424f8bf | 3300 | kfree(ses->serverDomain); |
e915fc49 | 3301 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 3302 | } |
1da177e4 | 3303 | } else { /* no room so create dummy domain and NOS string */ |
fb8c4b14 | 3304 | if (ses->serverDomain) |
a424f8bf | 3305 | kfree(ses->serverDomain); |
e915fc49 | 3306 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 3307 | kfree(ses->serverNOS); |
e915fc49 | 3308 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3309 | } |
3310 | } else { /* ASCII */ | |
3311 | len = strnlen(bcc_ptr, 1024); | |
50c2f753 SF |
3312 | if (((long) bcc_ptr + len) - |
3313 | (long) pByteArea(smb_buffer_response) | |
63135e08 | 3314 | <= BCC(smb_buffer_response)) { |
fb8c4b14 | 3315 | if (ses->serverOS) |
a424f8bf | 3316 | kfree(ses->serverOS); |
77159b4d | 3317 | ses->serverOS = kzalloc(len + 1, GFP_KERNEL); |
1da177e4 LT |
3318 | strncpy(ses->serverOS,bcc_ptr, len); |
3319 | ||
3320 | bcc_ptr += len; | |
3321 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3322 | bcc_ptr++; | |
3323 | ||
3324 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3325 | kfree(ses->serverNOS); |
50c2f753 SF |
3326 | ses->serverNOS = kzalloc(len+1, |
3327 | GFP_KERNEL); | |
63135e08 SF |
3328 | strncpy(ses->serverNOS, |
3329 | bcc_ptr, len); | |
1da177e4 LT |
3330 | bcc_ptr += len; |
3331 | bcc_ptr[0] = 0; | |
3332 | bcc_ptr++; | |
3333 | ||
3334 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 3335 | if (ses->serverDomain) |
a424f8bf | 3336 | kfree(ses->serverDomain); |
63135e08 SF |
3337 | ses->serverDomain = |
3338 | kzalloc(len+1, | |
3339 | GFP_KERNEL); | |
3340 | strncpy(ses->serverDomain, | |
3341 | bcc_ptr, len); | |
1da177e4 LT |
3342 | bcc_ptr += len; |
3343 | bcc_ptr[0] = 0; | |
3344 | bcc_ptr++; | |
3345 | } else | |
6345a3a8 | 3346 | cFYI(1, ("field of length %d " |
63135e08 | 3347 | "extends beyond end of smb ", |
1da177e4 LT |
3348 | len)); |
3349 | } | |
3350 | } else { | |
6345a3a8 | 3351 | cERROR(1, ("Security Blob extends beyond end " |
63135e08 | 3352 | "of SMB")); |
1da177e4 LT |
3353 | } |
3354 | } else { | |
3355 | cERROR(1, ("No session structure passed in.")); | |
3356 | } | |
3357 | } else { | |
6345a3a8 | 3358 | cERROR(1, ("Invalid Word count %d: ", |
1da177e4 LT |
3359 | smb_buffer_response->WordCount)); |
3360 | rc = -EIO; | |
3361 | } | |
3362 | ||
a8a11d39 | 3363 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3364 | |
3365 | return rc; | |
3366 | } | |
3367 | ||
3368 | int | |
3369 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3370 | const char *tree, struct cifsTconInfo *tcon, | |
3371 | const struct nls_table *nls_codepage) | |
3372 | { | |
3373 | struct smb_hdr *smb_buffer; | |
3374 | struct smb_hdr *smb_buffer_response; | |
3375 | TCONX_REQ *pSMB; | |
3376 | TCONX_RSP *pSMBr; | |
3377 | unsigned char *bcc_ptr; | |
3378 | int rc = 0; | |
3379 | int length; | |
3380 | __u16 count; | |
3381 | ||
3382 | if (ses == NULL) | |
3383 | return -EIO; | |
3384 | ||
3385 | smb_buffer = cifs_buf_get(); | |
3386 | if (smb_buffer == NULL) { | |
3387 | return -ENOMEM; | |
3388 | } | |
3389 | smb_buffer_response = smb_buffer; | |
3390 | ||
3391 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3392 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3393 | |
3394 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3395 | smb_buffer->Uid = ses->Suid; |
3396 | pSMB = (TCONX_REQ *) smb_buffer; | |
3397 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3398 | ||
3399 | pSMB->AndXCommand = 0xFF; | |
3400 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3401 | bcc_ptr = &pSMB->Password[0]; |
fb8c4b14 | 3402 | if ((ses->server->secMode) & SECMODE_USER) { |
eeac8047 | 3403 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
7c7b25bc | 3404 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3405 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3406 | /* already aligned so no need to do it below */ |
eeac8047 | 3407 | } else { |
7c7b25bc | 3408 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3409 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3410 | specified as required (when that support is added to | |
3411 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3412 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3413 | by Samba (not sure whether other servers allow |
3414 | NTLMv2 password here) */ | |
7c7b25bc | 3415 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
50c2f753 | 3416 | if ((extended_security & CIFSSEC_MAY_LANMAN) && |
7c7b25bc SF |
3417 | (ses->server->secType == LANMAN)) |
3418 | calc_lanman_hash(ses, bcc_ptr); | |
3419 | else | |
3420 | #endif /* CIFS_WEAK_PW_HASH */ | |
eeac8047 SF |
3421 | SMBNTencrypt(ses->password, |
3422 | ses->server->cryptKey, | |
3423 | bcc_ptr); | |
3424 | ||
7c7b25bc | 3425 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
fb8c4b14 | 3426 | if (ses->capabilities & CAP_UNICODE) { |
7c7b25bc SF |
3427 | /* must align unicode strings */ |
3428 | *bcc_ptr = 0; /* null byte password */ | |
3429 | bcc_ptr++; | |
3430 | } | |
eeac8047 | 3431 | } |
1da177e4 | 3432 | |
50c2f753 | 3433 | if (ses->server->secMode & |
a878fb22 | 3434 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3435 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3436 | ||
3437 | if (ses->capabilities & CAP_STATUS32) { | |
3438 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3439 | } | |
3440 | if (ses->capabilities & CAP_DFS) { | |
3441 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3442 | } | |
3443 | if (ses->capabilities & CAP_UNICODE) { | |
3444 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3445 | length = | |
50c2f753 SF |
3446 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3447 | 6 /* max utf8 char length in bytes */ * | |
a878fb22 SF |
3448 | (/* server len*/ + 256 /* share len */), nls_codepage); |
3449 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3450 | bcc_ptr += 2; /* skip trailing null */ |
3451 | } else { /* ASCII */ | |
1da177e4 LT |
3452 | strcpy(bcc_ptr, tree); |
3453 | bcc_ptr += strlen(tree) + 1; | |
3454 | } | |
3455 | strcpy(bcc_ptr, "?????"); | |
3456 | bcc_ptr += strlen("?????"); | |
3457 | bcc_ptr += 1; | |
3458 | count = bcc_ptr - &pSMB->Password[0]; | |
3459 | pSMB->hdr.smb_buf_length += count; | |
3460 | pSMB->ByteCount = cpu_to_le16(count); | |
3461 | ||
133672ef SF |
3462 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, |
3463 | CIFS_STD_OP); | |
1da177e4 LT |
3464 | |
3465 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3466 | /* above now done in SendReceive */ | |
3467 | if ((rc == 0) && (tcon != NULL)) { | |
3468 | tcon->tidStatus = CifsGood; | |
3469 | tcon->tid = smb_buffer_response->Tid; | |
3470 | bcc_ptr = pByteArea(smb_buffer_response); | |
3471 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
50c2f753 | 3472 | /* skip service field (NB: this field is always ASCII) */ |
7f8ed420 SF |
3473 | if (length == 3) { |
3474 | if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') && | |
3475 | (bcc_ptr[2] == 'C')) { | |
3476 | cFYI(1, ("IPC connection")); | |
3477 | tcon->ipc = 1; | |
3478 | } | |
3479 | } else if (length == 2) { | |
3480 | if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) { | |
3481 | /* the most common case */ | |
3482 | cFYI(1, ("disk share connection")); | |
3483 | } | |
3484 | } | |
50c2f753 | 3485 | bcc_ptr += length + 1; |
1da177e4 LT |
3486 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
3487 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3488 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3489 | if ((bcc_ptr + (2 * length)) - | |
3490 | pByteArea(smb_buffer_response) <= | |
3491 | BCC(smb_buffer_response)) { | |
f99d49ad | 3492 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3493 | tcon->nativeFileSystem = |
e915fc49 | 3494 | kzalloc(length + 2, GFP_KERNEL); |
88f370a6 SF |
3495 | if (tcon->nativeFileSystem) |
3496 | cifs_strfromUCS_le( | |
3497 | tcon->nativeFileSystem, | |
3498 | (__le16 *) bcc_ptr, | |
3499 | length, nls_codepage); | |
1da177e4 LT |
3500 | bcc_ptr += 2 * length; |
3501 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3502 | bcc_ptr[1] = 0; | |
3503 | bcc_ptr += 2; | |
3504 | } | |
50c2f753 | 3505 | /* else do not bother copying these information fields*/ |
1da177e4 LT |
3506 | } else { |
3507 | length = strnlen(bcc_ptr, 1024); | |
3508 | if ((bcc_ptr + length) - | |
3509 | pByteArea(smb_buffer_response) <= | |
3510 | BCC(smb_buffer_response)) { | |
f99d49ad | 3511 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3512 | tcon->nativeFileSystem = |
e915fc49 | 3513 | kzalloc(length + 1, GFP_KERNEL); |
88f370a6 SF |
3514 | if (tcon->nativeFileSystem) |
3515 | strncpy(tcon->nativeFileSystem, bcc_ptr, | |
3516 | length); | |
1da177e4 | 3517 | } |
50c2f753 | 3518 | /* else do not bother copying these information fields*/ |
1da177e4 | 3519 | } |
fb8c4b14 | 3520 | if ((smb_buffer_response->WordCount == 3) || |
1a4e15a0 SF |
3521 | (smb_buffer_response->WordCount == 7)) |
3522 | /* field is in same location */ | |
3979877e SF |
3523 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
3524 | else | |
3525 | tcon->Flags = 0; | |
1da177e4 LT |
3526 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3527 | } else if ((rc == 0) && tcon == NULL) { | |
50c2f753 | 3528 | /* all we need to save for IPC$ connection */ |
1da177e4 LT |
3529 | ses->ipc_tid = smb_buffer_response->Tid; |
3530 | } | |
3531 | ||
a8a11d39 | 3532 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3533 | return rc; |
3534 | } | |
3535 | ||
3536 | int | |
3537 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3538 | { | |
3539 | int rc = 0; | |
3540 | int xid; | |
3541 | struct cifsSesInfo *ses = NULL; | |
3542 | struct task_struct *cifsd_task; | |
50c2f753 | 3543 | char *tmp; |
1da177e4 LT |
3544 | |
3545 | xid = GetXid(); | |
3546 | ||
3547 | if (cifs_sb->tcon) { | |
3548 | ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ | |
3549 | rc = CIFSSMBTDis(xid, cifs_sb->tcon); | |
3550 | if (rc == -EBUSY) { | |
3551 | FreeXid(xid); | |
3552 | return 0; | |
3553 | } | |
5d941ca6 | 3554 | DeleteTconOplockQEntries(cifs_sb->tcon); |
1da177e4 LT |
3555 | tconInfoFree(cifs_sb->tcon); |
3556 | if ((ses) && (ses->server)) { | |
3557 | /* save off task so we do not refer to ses later */ | |
3558 | cifsd_task = ses->server->tsk; | |
3559 | cFYI(1, ("About to do SMBLogoff ")); | |
3560 | rc = CIFSSMBLogoff(xid, ses); | |
3561 | if (rc == -EBUSY) { | |
3562 | FreeXid(xid); | |
3563 | return 0; | |
3564 | } else if (rc == -ESHUTDOWN) { | |
467a8f8d | 3565 | cFYI(1, ("Waking up socket by sending signal")); |
469ee614 | 3566 | if (cifsd_task) |
50c2f753 | 3567 | force_sig(SIGKILL, cifsd_task); |
1da177e4 LT |
3568 | rc = 0; |
3569 | } /* else - we have an smb session | |
3570 | left on this socket do not kill cifsd */ | |
3571 | } else | |
3572 | cFYI(1, ("No session or bad tcon")); | |
3573 | } | |
50c2f753 | 3574 | |
1da177e4 | 3575 | cifs_sb->tcon = NULL; |
2fe87f02 SF |
3576 | tmp = cifs_sb->prepath; |
3577 | cifs_sb->prepathlen = 0; | |
3578 | cifs_sb->prepath = NULL; | |
3579 | kfree(tmp); | |
1da177e4 LT |
3580 | if (ses) |
3581 | sesInfoFree(ses); | |
3582 | ||
3583 | FreeXid(xid); | |
88e7d705 | 3584 | return rc; |
50c2f753 | 3585 | } |
1da177e4 LT |
3586 | |
3587 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
50c2f753 | 3588 | struct nls_table *nls_info) |
1da177e4 LT |
3589 | { |
3590 | int rc = 0; | |
7c7b25bc | 3591 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
4b18f2a9 | 3592 | bool ntlmv2_flag = false; |
ad009ac9 | 3593 | int first_time = 0; |
cb7691b6 | 3594 | struct TCP_Server_Info *server = pSesInfo->server; |
1da177e4 LT |
3595 | |
3596 | /* what if server changes its buffer size after dropping the session? */ | |
cb7691b6 | 3597 | if (server->maxBuf == 0) /* no need to send on reconnect */ { |
1da177e4 | 3598 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
cb7691b6 JL |
3599 | if (rc == -EAGAIN) { |
3600 | /* retry only once on 1st time connection */ | |
1da177e4 | 3601 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
50c2f753 | 3602 | if (rc == -EAGAIN) |
1da177e4 LT |
3603 | rc = -EHOSTDOWN; |
3604 | } | |
fb8c4b14 | 3605 | if (rc == 0) { |
1da177e4 | 3606 | spin_lock(&GlobalMid_Lock); |
cb7691b6 JL |
3607 | if (server->tcpStatus != CifsExiting) |
3608 | server->tcpStatus = CifsGood; | |
1da177e4 LT |
3609 | else |
3610 | rc = -EHOSTDOWN; | |
3611 | spin_unlock(&GlobalMid_Lock); | |
3612 | ||
3613 | } | |
ad009ac9 | 3614 | first_time = 1; |
1da177e4 | 3615 | } |
26b994fa SF |
3616 | |
3617 | if (rc) | |
3618 | goto ss_err_exit; | |
3619 | ||
3620 | pSesInfo->flags = 0; | |
cb7691b6 | 3621 | pSesInfo->capabilities = server->capabilities; |
26b994fa SF |
3622 | if (linuxExtEnabled == 0) |
3623 | pSesInfo->capabilities &= (~CAP_UNIX); | |
ad009ac9 | 3624 | /* pSesInfo->sequence_number = 0;*/ |
26b994fa | 3625 | cFYI(1, ("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", |
cb7691b6 JL |
3626 | server->secMode, server->capabilities, server->timeAdj)); |
3627 | ||
26b994fa SF |
3628 | if (experimEnabled < 2) |
3629 | rc = CIFS_SessSetup(xid, pSesInfo, first_time, nls_info); | |
3630 | else if (extended_security | |
3631 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
cb7691b6 | 3632 | && (server->secType == NTLMSSP)) { |
26b994fa SF |
3633 | rc = -EOPNOTSUPP; |
3634 | } else if (extended_security | |
3635 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
cb7691b6 | 3636 | && (server->secType == RawNTLMSSP)) { |
26b994fa SF |
3637 | cFYI(1, ("NTLMSSP sesssetup")); |
3638 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, pSesInfo, &ntlmv2_flag, | |
3639 | nls_info); | |
3640 | if (!rc) { | |
3641 | if (ntlmv2_flag) { | |
3642 | char *v2_response; | |
3643 | cFYI(1, ("more secure NTLM ver2 hash")); | |
3644 | if (CalcNTLMv2_partial_mac_key(pSesInfo, | |
3645 | nls_info)) { | |
3646 | rc = -ENOMEM; | |
3647 | goto ss_err_exit; | |
3648 | } else | |
3649 | v2_response = kmalloc(16 + 64 /* blob*/, | |
3650 | GFP_KERNEL); | |
3651 | if (v2_response) { | |
3652 | CalcNTLMv2_response(pSesInfo, | |
3653 | v2_response); | |
3654 | /* if (first_time) | |
3655 | cifs_calculate_ntlmv2_mac_key */ | |
3656 | kfree(v2_response); | |
1da177e4 | 3657 | /* BB Put dummy sig in SessSetup PDU? */ |
1da177e4 | 3658 | } else { |
26b994fa SF |
3659 | rc = -ENOMEM; |
3660 | goto ss_err_exit; | |
1da177e4 | 3661 | } |
26b994fa SF |
3662 | |
3663 | } else { | |
3664 | SMBNTencrypt(pSesInfo->password, | |
cb7691b6 | 3665 | server->cryptKey, |
26b994fa SF |
3666 | ntlm_session_key); |
3667 | ||
3668 | if (first_time) | |
3669 | cifs_calculate_mac_key( | |
cb7691b6 | 3670 | &server->mac_signing_key, |
26b994fa SF |
3671 | ntlm_session_key, |
3672 | pSesInfo->password); | |
3673 | } | |
1da177e4 LT |
3674 | /* for better security the weaker lanman hash not sent |
3675 | in AuthSessSetup so we no longer calculate it */ | |
3676 | ||
26b994fa SF |
3677 | rc = CIFSNTLMSSPAuthSessSetup(xid, pSesInfo, |
3678 | ntlm_session_key, | |
3679 | ntlmv2_flag, | |
3680 | nls_info); | |
3681 | } | |
3682 | } else { /* old style NTLM 0.12 session setup */ | |
cb7691b6 | 3683 | SMBNTencrypt(pSesInfo->password, server->cryptKey, |
26b994fa | 3684 | ntlm_session_key); |
1da177e4 | 3685 | |
26b994fa | 3686 | if (first_time) |
cb7691b6 JL |
3687 | cifs_calculate_mac_key(&server->mac_signing_key, |
3688 | ntlm_session_key, | |
3689 | pSesInfo->password); | |
ad009ac9 | 3690 | |
26b994fa SF |
3691 | rc = CIFSSessSetup(xid, pSesInfo, ntlm_session_key, nls_info); |
3692 | } | |
3693 | if (rc) { | |
3694 | cERROR(1, ("Send error in SessSetup = %d", rc)); | |
3695 | } else { | |
3696 | cFYI(1, ("CIFS Session Established successfully")); | |
469ee614 | 3697 | spin_lock(&GlobalMid_Lock); |
1da177e4 | 3698 | pSesInfo->status = CifsGood; |
469ee614 | 3699 | spin_unlock(&GlobalMid_Lock); |
1da177e4 | 3700 | } |
26b994fa | 3701 | |
1da177e4 LT |
3702 | ss_err_exit: |
3703 | return rc; | |
3704 | } | |
3705 |