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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/connect.c | |
3 | * | |
366781c1 | 4 | * Copyright (C) International Business Machines Corp., 2002,2008 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * This library is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU Lesser General Public License as published | |
9 | * by the Free Software Foundation; either version 2.1 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This library is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
15 | * the GNU Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public License | |
18 | * along with this library; if not, write to the Free Software | |
fb8c4b14 | 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
1da177e4 LT |
20 | */ |
21 | #include <linux/fs.h> | |
22 | #include <linux/net.h> | |
23 | #include <linux/string.h> | |
24 | #include <linux/list.h> | |
25 | #include <linux/wait.h> | |
26 | #include <linux/ipv6.h> | |
27 | #include <linux/pagemap.h> | |
28 | #include <linux/ctype.h> | |
29 | #include <linux/utsname.h> | |
30 | #include <linux/mempool.h> | |
b8643e1b | 31 | #include <linux/delay.h> |
f191401f | 32 | #include <linux/completion.h> |
aaf737ad | 33 | #include <linux/kthread.h> |
0ae0efad | 34 | #include <linux/pagevec.h> |
7dfb7103 | 35 | #include <linux/freezer.h> |
1da177e4 LT |
36 | #include <asm/uaccess.h> |
37 | #include <asm/processor.h> | |
38 | #include "cifspdu.h" | |
39 | #include "cifsglob.h" | |
40 | #include "cifsproto.h" | |
41 | #include "cifs_unicode.h" | |
42 | #include "cifs_debug.h" | |
43 | #include "cifs_fs_sb.h" | |
44 | #include "ntlmssp.h" | |
45 | #include "nterr.h" | |
46 | #include "rfc1002pdu.h" | |
a2653eba | 47 | #include "cn_cifs.h" |
1da177e4 LT |
48 | |
49 | #define CIFS_PORT 445 | |
50 | #define RFC1001_PORT 139 | |
51 | ||
1da177e4 LT |
52 | extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, |
53 | unsigned char *p24); | |
54 | ||
55 | extern mempool_t *cifs_req_poolp; | |
56 | ||
57 | struct smb_vol { | |
58 | char *username; | |
59 | char *password; | |
60 | char *domainname; | |
61 | char *UNC; | |
62 | char *UNCip; | |
95b1cb90 | 63 | char *in6_addr; /* ipv6 address as human readable form of in6_addr */ |
1da177e4 LT |
64 | char *iocharset; /* local code page for mapping to and from Unicode */ |
65 | char source_rfc1001_name[16]; /* netbios name of client */ | |
a10faeb2 | 66 | char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */ |
1da177e4 LT |
67 | uid_t linux_uid; |
68 | gid_t linux_gid; | |
69 | mode_t file_mode; | |
70 | mode_t dir_mode; | |
189acaae | 71 | unsigned secFlg; |
4b18f2a9 SF |
72 | bool rw:1; |
73 | bool retry:1; | |
74 | bool intr:1; | |
75 | bool setuids:1; | |
76 | bool override_uid:1; | |
77 | bool override_gid:1; | |
d0a9c078 | 78 | bool dynperm:1; |
4b18f2a9 SF |
79 | bool noperm:1; |
80 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
81 | bool cifs_acl:1; | |
82 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ | |
83 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
84 | bool direct_io:1; | |
95b1cb90 SF |
85 | bool remap:1; /* set to remap seven reserved chars in filenames */ |
86 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ | |
4b18f2a9 SF |
87 | bool no_linux_ext:1; |
88 | bool sfu_emul:1; | |
95b1cb90 SF |
89 | bool nullauth:1; /* attempt to authenticate with null user */ |
90 | bool nocase:1; /* request case insensitive filenames */ | |
91 | bool nobrl:1; /* disable sending byte range locks to srv */ | |
92 | bool seal:1; /* request transport encryption on share */ | |
84210e91 SF |
93 | bool nodfs:1; /* Do not request DFS, even if available */ |
94 | bool local_lease:1; /* check leases only on local system, not remote */ | |
1da177e4 LT |
95 | unsigned int rsize; |
96 | unsigned int wsize; | |
97 | unsigned int sockopt; | |
98 | unsigned short int port; | |
fb8c4b14 | 99 | char *prepath; |
1da177e4 LT |
100 | }; |
101 | ||
fb8c4b14 | 102 | static int ipv4_connect(struct sockaddr_in *psin_server, |
1da177e4 | 103 | struct socket **csocket, |
fb8c4b14 SF |
104 | char *netb_name, |
105 | char *server_netb_name); | |
106 | static int ipv6_connect(struct sockaddr_in6 *psin_server, | |
1da177e4 LT |
107 | struct socket **csocket); |
108 | ||
109 | ||
fb8c4b14 | 110 | /* |
1da177e4 | 111 | * cifs tcp session reconnection |
fb8c4b14 | 112 | * |
1da177e4 LT |
113 | * mark tcp session as reconnecting so temporarily locked |
114 | * mark all smb sessions as reconnecting for tcp session | |
115 | * reconnect tcp session | |
116 | * wake up waiters on reconnection? - (not needed currently) | |
117 | */ | |
118 | ||
2cd646a2 | 119 | static int |
1da177e4 LT |
120 | cifs_reconnect(struct TCP_Server_Info *server) |
121 | { | |
122 | int rc = 0; | |
123 | struct list_head *tmp; | |
124 | struct cifsSesInfo *ses; | |
125 | struct cifsTconInfo *tcon; | |
fb8c4b14 | 126 | struct mid_q_entry *mid_entry; |
50c2f753 | 127 | |
1da177e4 | 128 | spin_lock(&GlobalMid_Lock); |
469ee614 | 129 | if (server->tcpStatus == CifsExiting) { |
fb8c4b14 | 130 | /* the demux thread will exit normally |
1da177e4 LT |
131 | next time through the loop */ |
132 | spin_unlock(&GlobalMid_Lock); | |
133 | return rc; | |
134 | } else | |
135 | server->tcpStatus = CifsNeedReconnect; | |
136 | spin_unlock(&GlobalMid_Lock); | |
137 | server->maxBuf = 0; | |
138 | ||
e4eb295d | 139 | cFYI(1, ("Reconnecting tcp session")); |
1da177e4 LT |
140 | |
141 | /* before reconnecting the tcp session, mark the smb session (uid) | |
142 | and the tid bad so they are not used until reconnected */ | |
143 | read_lock(&GlobalSMBSeslock); | |
144 | list_for_each(tmp, &GlobalSMBSessionList) { | |
145 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
146 | if (ses->server) { | |
147 | if (ses->server == server) { | |
148 | ses->status = CifsNeedReconnect; | |
149 | ses->ipc_tid = 0; | |
150 | } | |
151 | } | |
152 | /* else tcp and smb sessions need reconnection */ | |
153 | } | |
154 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
155 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); | |
ad8b15f0 | 156 | if ((tcon->ses) && (tcon->ses->server == server)) |
1da177e4 | 157 | tcon->tidStatus = CifsNeedReconnect; |
1da177e4 LT |
158 | } |
159 | read_unlock(&GlobalSMBSeslock); | |
160 | /* do not want to be sending data on a socket we are freeing */ | |
fb8c4b14 SF |
161 | down(&server->tcpSem); |
162 | if (server->ssocket) { | |
467a8f8d | 163 | cFYI(1, ("State: 0x%x Flags: 0x%lx", server->ssocket->state, |
1da177e4 | 164 | server->ssocket->flags)); |
91cf45f0 | 165 | kernel_sock_shutdown(server->ssocket, SHUT_WR); |
fb8c4b14 | 166 | cFYI(1, ("Post shutdown state: 0x%x Flags: 0x%lx", |
467a8f8d | 167 | server->ssocket->state, |
1da177e4 LT |
168 | server->ssocket->flags)); |
169 | sock_release(server->ssocket); | |
170 | server->ssocket = NULL; | |
171 | } | |
172 | ||
173 | spin_lock(&GlobalMid_Lock); | |
174 | list_for_each(tmp, &server->pending_mid_q) { | |
175 | mid_entry = list_entry(tmp, struct | |
176 | mid_q_entry, | |
177 | qhead); | |
ad8b15f0 | 178 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { |
09d1db5c SF |
179 | /* Mark other intransit requests as needing |
180 | retry so we do not immediately mark the | |
181 | session bad again (ie after we reconnect | |
182 | below) as they timeout too */ | |
ad8b15f0 | 183 | mid_entry->midState = MID_RETRY_NEEDED; |
1da177e4 LT |
184 | } |
185 | } | |
186 | spin_unlock(&GlobalMid_Lock); | |
fb8c4b14 | 187 | up(&server->tcpSem); |
1da177e4 | 188 | |
469ee614 JL |
189 | while ((server->tcpStatus != CifsExiting) && |
190 | (server->tcpStatus != CifsGood)) { | |
6c3d8909 | 191 | try_to_freeze(); |
fb8c4b14 SF |
192 | if (server->protocolType == IPV6) { |
193 | rc = ipv6_connect(&server->addr.sockAddr6, | |
194 | &server->ssocket); | |
1da177e4 | 195 | } else { |
fb8c4b14 | 196 | rc = ipv4_connect(&server->addr.sockAddr, |
1da177e4 | 197 | &server->ssocket, |
a10faeb2 SF |
198 | server->workstation_RFC1001_name, |
199 | server->server_RFC1001_name); | |
1da177e4 | 200 | } |
fb8c4b14 SF |
201 | if (rc) { |
202 | cFYI(1, ("reconnect error %d", rc)); | |
0cb766ae | 203 | msleep(3000); |
1da177e4 LT |
204 | } else { |
205 | atomic_inc(&tcpSesReconnectCount); | |
206 | spin_lock(&GlobalMid_Lock); | |
469ee614 | 207 | if (server->tcpStatus != CifsExiting) |
1da177e4 | 208 | server->tcpStatus = CifsGood; |
ad009ac9 | 209 | server->sequence_number = 0; |
fb8c4b14 | 210 | spin_unlock(&GlobalMid_Lock); |
1da177e4 LT |
211 | /* atomic_set(&server->inFlight,0);*/ |
212 | wake_up(&server->response_q); | |
213 | } | |
214 | } | |
215 | return rc; | |
216 | } | |
217 | ||
fb8c4b14 | 218 | /* |
e4eb295d SF |
219 | return codes: |
220 | 0 not a transact2, or all data present | |
221 | >0 transact2 with that much data missing | |
222 | -EINVAL = invalid transact2 | |
223 | ||
224 | */ | |
fb8c4b14 | 225 | static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) |
e4eb295d | 226 | { |
fb8c4b14 SF |
227 | struct smb_t2_rsp *pSMBt; |
228 | int total_data_size; | |
e4eb295d SF |
229 | int data_in_this_rsp; |
230 | int remaining; | |
231 | ||
fb8c4b14 | 232 | if (pSMB->Command != SMB_COM_TRANSACTION2) |
e4eb295d SF |
233 | return 0; |
234 | ||
fb8c4b14 SF |
235 | /* check for plausible wct, bcc and t2 data and parm sizes */ |
236 | /* check for parm and data offset going beyond end of smb */ | |
237 | if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
467a8f8d | 238 | cFYI(1, ("invalid transact2 word count")); |
e4eb295d SF |
239 | return -EINVAL; |
240 | } | |
241 | ||
242 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
243 | ||
244 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
245 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
246 | ||
247 | remaining = total_data_size - data_in_this_rsp; | |
248 | ||
fb8c4b14 | 249 | if (remaining == 0) |
e4eb295d | 250 | return 0; |
fb8c4b14 | 251 | else if (remaining < 0) { |
467a8f8d | 252 | cFYI(1, ("total data %d smaller than data in frame %d", |
e4eb295d SF |
253 | total_data_size, data_in_this_rsp)); |
254 | return -EINVAL; | |
255 | } else { | |
467a8f8d | 256 | cFYI(1, ("missing %d bytes from transact2, check next response", |
e4eb295d | 257 | remaining)); |
fb8c4b14 SF |
258 | if (total_data_size > maxBufSize) { |
259 | cERROR(1, ("TotalDataSize %d is over maximum buffer %d", | |
260 | total_data_size, maxBufSize)); | |
261 | return -EINVAL; | |
e4eb295d SF |
262 | } |
263 | return remaining; | |
264 | } | |
265 | } | |
266 | ||
fb8c4b14 | 267 | static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) |
e4eb295d SF |
268 | { |
269 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
270 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
271 | int total_data_size; | |
272 | int total_in_buf; | |
273 | int remaining; | |
274 | int total_in_buf2; | |
fb8c4b14 SF |
275 | char *data_area_of_target; |
276 | char *data_area_of_buf2; | |
e4eb295d SF |
277 | __u16 byte_count; |
278 | ||
279 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
280 | ||
fb8c4b14 | 281 | if (total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { |
63135e08 | 282 | cFYI(1, ("total data size of primary and secondary t2 differ")); |
e4eb295d SF |
283 | } |
284 | ||
285 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
286 | ||
287 | remaining = total_data_size - total_in_buf; | |
50c2f753 | 288 | |
fb8c4b14 | 289 | if (remaining < 0) |
e4eb295d SF |
290 | return -EINVAL; |
291 | ||
fb8c4b14 | 292 | if (remaining == 0) /* nothing to do, ignore */ |
e4eb295d | 293 | return 0; |
50c2f753 | 294 | |
e4eb295d | 295 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); |
fb8c4b14 | 296 | if (remaining < total_in_buf2) { |
467a8f8d | 297 | cFYI(1, ("transact2 2nd response contains too much data")); |
e4eb295d SF |
298 | } |
299 | ||
300 | /* find end of first SMB data area */ | |
fb8c4b14 | 301 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + |
e4eb295d SF |
302 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); |
303 | /* validate target area */ | |
304 | ||
305 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
fb8c4b14 | 306 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); |
e4eb295d SF |
307 | |
308 | data_area_of_target += total_in_buf; | |
309 | ||
310 | /* copy second buffer into end of first buffer */ | |
fb8c4b14 | 311 | memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); |
e4eb295d SF |
312 | total_in_buf += total_in_buf2; |
313 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
314 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
315 | byte_count += total_in_buf2; | |
316 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
317 | ||
70ca734a | 318 | byte_count = pTargetSMB->smb_buf_length; |
e4eb295d SF |
319 | byte_count += total_in_buf2; |
320 | ||
321 | /* BB also add check that we are not beyond maximum buffer size */ | |
50c2f753 | 322 | |
70ca734a | 323 | pTargetSMB->smb_buf_length = byte_count; |
e4eb295d | 324 | |
fb8c4b14 | 325 | if (remaining == total_in_buf2) { |
467a8f8d | 326 | cFYI(1, ("found the last secondary response")); |
e4eb295d SF |
327 | return 0; /* we are done */ |
328 | } else /* more responses to go */ | |
329 | return 1; | |
330 | ||
331 | } | |
332 | ||
1da177e4 LT |
333 | static int |
334 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
335 | { | |
336 | int length; | |
337 | unsigned int pdu_length, total_read; | |
338 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
339 | struct smb_hdr *bigbuf = NULL; |
340 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
341 | struct msghdr smb_msg; |
342 | struct kvec iov; | |
343 | struct socket *csocket = server->ssocket; | |
344 | struct list_head *tmp; | |
345 | struct cifsSesInfo *ses; | |
346 | struct task_struct *task_to_wake = NULL; | |
347 | struct mid_q_entry *mid_entry; | |
70ca734a | 348 | char temp; |
4b18f2a9 SF |
349 | bool isLargeBuf = false; |
350 | bool isMultiRsp; | |
e4eb295d | 351 | int reconnect; |
1da177e4 | 352 | |
1da177e4 | 353 | current->flags |= PF_MEMALLOC; |
ba25f9dc | 354 | cFYI(1, ("Demultiplex PID: %d", task_pid_nr(current))); |
93d0ec85 JL |
355 | |
356 | length = atomic_inc_return(&tcpSesAllocCount); | |
357 | if (length > 1) | |
26f57364 SF |
358 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, |
359 | GFP_KERNEL); | |
1da177e4 | 360 | |
83144186 | 361 | set_freezable(); |
469ee614 | 362 | while (server->tcpStatus != CifsExiting) { |
ede1327e SF |
363 | if (try_to_freeze()) |
364 | continue; | |
b8643e1b SF |
365 | if (bigbuf == NULL) { |
366 | bigbuf = cifs_buf_get(); | |
0fd1ffe0 PM |
367 | if (!bigbuf) { |
368 | cERROR(1, ("No memory for large SMB response")); | |
b8643e1b SF |
369 | msleep(3000); |
370 | /* retry will check if exiting */ | |
371 | continue; | |
372 | } | |
0fd1ffe0 PM |
373 | } else if (isLargeBuf) { |
374 | /* we are reusing a dirty large buf, clear its start */ | |
26f57364 | 375 | memset(bigbuf, 0, sizeof(struct smb_hdr)); |
1da177e4 | 376 | } |
b8643e1b SF |
377 | |
378 | if (smallbuf == NULL) { | |
379 | smallbuf = cifs_small_buf_get(); | |
0fd1ffe0 PM |
380 | if (!smallbuf) { |
381 | cERROR(1, ("No memory for SMB response")); | |
b8643e1b SF |
382 | msleep(1000); |
383 | /* retry will check if exiting */ | |
384 | continue; | |
385 | } | |
386 | /* beginning of smb buffer is cleared in our buf_get */ | |
387 | } else /* if existing small buf clear beginning */ | |
26f57364 | 388 | memset(smallbuf, 0, sizeof(struct smb_hdr)); |
b8643e1b | 389 | |
4b18f2a9 SF |
390 | isLargeBuf = false; |
391 | isMultiRsp = false; | |
b8643e1b | 392 | smb_buffer = smallbuf; |
1da177e4 LT |
393 | iov.iov_base = smb_buffer; |
394 | iov.iov_len = 4; | |
395 | smb_msg.msg_control = NULL; | |
396 | smb_msg.msg_controllen = 0; | |
f01d5e14 SF |
397 | pdu_length = 4; /* enough to get RFC1001 header */ |
398 | incomplete_rcv: | |
1da177e4 LT |
399 | length = |
400 | kernel_recvmsg(csocket, &smb_msg, | |
f01d5e14 | 401 | &iov, 1, pdu_length, 0 /* BB other flags? */); |
1da177e4 | 402 | |
469ee614 | 403 | if (server->tcpStatus == CifsExiting) { |
1da177e4 LT |
404 | break; |
405 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
0fd1ffe0 | 406 | cFYI(1, ("Reconnect after server stopped responding")); |
1da177e4 | 407 | cifs_reconnect(server); |
0fd1ffe0 | 408 | cFYI(1, ("call to reconnect done")); |
1da177e4 LT |
409 | csocket = server->ssocket; |
410 | continue; | |
411 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 412 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
413 | allowing socket to clear and app threads to set |
414 | tcpStatus CifsNeedReconnect if server hung */ | |
c18c732e SF |
415 | if (pdu_length < 4) |
416 | goto incomplete_rcv; | |
417 | else | |
418 | continue; | |
1da177e4 | 419 | } else if (length <= 0) { |
0fd1ffe0 PM |
420 | if (server->tcpStatus == CifsNew) { |
421 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
422 | /* some servers kill the TCP session rather than |
423 | returning an SMB negprot error, in which | |
424 | case reconnecting here is not going to help, | |
425 | and so simply return error to mount */ | |
1da177e4 LT |
426 | break; |
427 | } | |
0fd1ffe0 | 428 | if (!try_to_freeze() && (length == -EINTR)) { |
467a8f8d | 429 | cFYI(1, ("cifsd thread killed")); |
1da177e4 LT |
430 | break; |
431 | } | |
467a8f8d | 432 | cFYI(1, ("Reconnect after unexpected peek error %d", |
57337e42 | 433 | length)); |
1da177e4 LT |
434 | cifs_reconnect(server); |
435 | csocket = server->ssocket; | |
436 | wake_up(&server->response_q); | |
437 | continue; | |
2a974680 PT |
438 | } else if (length < pdu_length) { |
439 | cFYI(1, ("requested %d bytes but only got %d bytes", | |
440 | pdu_length, length)); | |
f01d5e14 | 441 | pdu_length -= length; |
f01d5e14 SF |
442 | msleep(1); |
443 | goto incomplete_rcv; | |
46810cbf | 444 | } |
1da177e4 | 445 | |
70ca734a SF |
446 | /* The right amount was read from socket - 4 bytes */ |
447 | /* so we can now interpret the length field */ | |
46810cbf | 448 | |
70ca734a SF |
449 | /* the first byte big endian of the length field, |
450 | is actually not part of the length but the type | |
451 | with the most common, zero, as regular data */ | |
452 | temp = *((char *) smb_buffer); | |
46810cbf | 453 | |
fb8c4b14 | 454 | /* Note that FC 1001 length is big endian on the wire, |
70ca734a SF |
455 | but we convert it here so it is always manipulated |
456 | as host byte order */ | |
5ca33c6a | 457 | pdu_length = be32_to_cpu((__force __be32)smb_buffer->smb_buf_length); |
70ca734a SF |
458 | smb_buffer->smb_buf_length = pdu_length; |
459 | ||
467a8f8d | 460 | cFYI(1, ("rfc1002 length 0x%x", pdu_length+4)); |
46810cbf | 461 | |
70ca734a | 462 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
fb8c4b14 | 463 | continue; |
70ca734a | 464 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
467a8f8d | 465 | cFYI(1, ("Good RFC 1002 session rsp")); |
e4eb295d | 466 | continue; |
70ca734a | 467 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
fb8c4b14 | 468 | /* we get this from Windows 98 instead of |
46810cbf | 469 | an error on SMB negprot response */ |
fb8c4b14 | 470 | cFYI(1, ("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 471 | pdu_length)); |
fb8c4b14 SF |
472 | if (server->tcpStatus == CifsNew) { |
473 | /* if nack on negprot (rather than | |
46810cbf SF |
474 | ret of smb negprot error) reconnecting |
475 | not going to help, ret error to mount */ | |
476 | break; | |
477 | } else { | |
478 | /* give server a second to | |
479 | clean up before reconnect attempt */ | |
480 | msleep(1000); | |
481 | /* always try 445 first on reconnect | |
482 | since we get NACK on some if we ever | |
fb8c4b14 | 483 | connected to port 139 (the NACK is |
46810cbf SF |
484 | since we do not begin with RFC1001 |
485 | session initialize frame) */ | |
fb8c4b14 | 486 | server->addr.sockAddr.sin_port = |
46810cbf | 487 | htons(CIFS_PORT); |
1da177e4 LT |
488 | cifs_reconnect(server); |
489 | csocket = server->ssocket; | |
46810cbf | 490 | wake_up(&server->response_q); |
1da177e4 | 491 | continue; |
46810cbf | 492 | } |
70ca734a | 493 | } else if (temp != (char) 0) { |
fb8c4b14 | 494 | cERROR(1, ("Unknown RFC 1002 frame")); |
70ca734a SF |
495 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
496 | length); | |
46810cbf SF |
497 | cifs_reconnect(server); |
498 | csocket = server->ssocket; | |
499 | continue; | |
e4eb295d SF |
500 | } |
501 | ||
502 | /* else we have an SMB response */ | |
fb8c4b14 | 503 | if ((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || |
26f57364 | 504 | (pdu_length < sizeof(struct smb_hdr) - 1 - 4)) { |
e4eb295d | 505 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 506 | length, pdu_length+4)); |
e4eb295d SF |
507 | cifs_reconnect(server); |
508 | csocket = server->ssocket; | |
509 | wake_up(&server->response_q); | |
510 | continue; | |
fb8c4b14 | 511 | } |
e4eb295d SF |
512 | |
513 | /* else length ok */ | |
514 | reconnect = 0; | |
515 | ||
fb8c4b14 | 516 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
4b18f2a9 | 517 | isLargeBuf = true; |
e4eb295d SF |
518 | memcpy(bigbuf, smallbuf, 4); |
519 | smb_buffer = bigbuf; | |
520 | } | |
521 | length = 0; | |
522 | iov.iov_base = 4 + (char *)smb_buffer; | |
523 | iov.iov_len = pdu_length; | |
fb8c4b14 | 524 | for (total_read = 0; total_read < pdu_length; |
e4eb295d SF |
525 | total_read += length) { |
526 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
527 | pdu_length - total_read, 0); | |
469ee614 | 528 | if ((server->tcpStatus == CifsExiting) || |
e4eb295d SF |
529 | (length == -EINTR)) { |
530 | /* then will exit */ | |
531 | reconnect = 2; | |
532 | break; | |
533 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
534 | cifs_reconnect(server); |
535 | csocket = server->ssocket; | |
fb8c4b14 | 536 | /* Reconnect wakes up rspns q */ |
e4eb295d SF |
537 | /* Now we will reread sock */ |
538 | reconnect = 1; | |
539 | break; | |
fb8c4b14 | 540 | } else if ((length == -ERESTARTSYS) || |
e4eb295d SF |
541 | (length == -EAGAIN)) { |
542 | msleep(1); /* minimum sleep to prevent looping, | |
fb8c4b14 | 543 | allowing socket to clear and app |
e4eb295d SF |
544 | threads to set tcpStatus |
545 | CifsNeedReconnect if server hung*/ | |
c18c732e | 546 | length = 0; |
46810cbf | 547 | continue; |
e4eb295d | 548 | } else if (length <= 0) { |
fb8c4b14 | 549 | cERROR(1, ("Received no data, expecting %d", |
e4eb295d SF |
550 | pdu_length - total_read)); |
551 | cifs_reconnect(server); | |
552 | csocket = server->ssocket; | |
553 | reconnect = 1; | |
554 | break; | |
46810cbf | 555 | } |
e4eb295d | 556 | } |
fb8c4b14 | 557 | if (reconnect == 2) |
e4eb295d | 558 | break; |
fb8c4b14 | 559 | else if (reconnect == 1) |
e4eb295d | 560 | continue; |
1da177e4 | 561 | |
e4eb295d | 562 | length += 4; /* account for rfc1002 hdr */ |
50c2f753 | 563 | |
09d1db5c | 564 | |
e4eb295d | 565 | dump_smb(smb_buffer, length); |
184ed211 | 566 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 567 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
568 | continue; |
569 | } | |
1da177e4 | 570 | |
e4eb295d SF |
571 | |
572 | task_to_wake = NULL; | |
573 | spin_lock(&GlobalMid_Lock); | |
574 | list_for_each(tmp, &server->pending_mid_q) { | |
575 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
576 | ||
50c2f753 | 577 | if ((mid_entry->mid == smb_buffer->Mid) && |
e4eb295d SF |
578 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && |
579 | (mid_entry->command == smb_buffer->Command)) { | |
fb8c4b14 | 580 | if (check2ndT2(smb_buffer,server->maxBuf) > 0) { |
e4eb295d | 581 | /* We have a multipart transact2 resp */ |
4b18f2a9 | 582 | isMultiRsp = true; |
fb8c4b14 | 583 | if (mid_entry->resp_buf) { |
e4eb295d | 584 | /* merge response - fix up 1st*/ |
50c2f753 | 585 | if (coalesce_t2(smb_buffer, |
e4eb295d | 586 | mid_entry->resp_buf)) { |
4b18f2a9 SF |
587 | mid_entry->multiRsp = |
588 | true; | |
e4eb295d SF |
589 | break; |
590 | } else { | |
591 | /* all parts received */ | |
4b18f2a9 SF |
592 | mid_entry->multiEnd = |
593 | true; | |
50c2f753 | 594 | goto multi_t2_fnd; |
e4eb295d SF |
595 | } |
596 | } else { | |
fb8c4b14 | 597 | if (!isLargeBuf) { |
e4eb295d SF |
598 | cERROR(1,("1st trans2 resp needs bigbuf")); |
599 | /* BB maybe we can fix this up, switch | |
50c2f753 | 600 | to already allocated large buffer? */ |
e4eb295d | 601 | } else { |
cd63499c | 602 | /* Have first buffer */ |
e4eb295d SF |
603 | mid_entry->resp_buf = |
604 | smb_buffer; | |
4b18f2a9 SF |
605 | mid_entry->largeBuf = |
606 | true; | |
e4eb295d SF |
607 | bigbuf = NULL; |
608 | } | |
609 | } | |
610 | break; | |
50c2f753 | 611 | } |
e4eb295d | 612 | mid_entry->resp_buf = smb_buffer; |
4b18f2a9 | 613 | mid_entry->largeBuf = isLargeBuf; |
e4eb295d SF |
614 | multi_t2_fnd: |
615 | task_to_wake = mid_entry->tsk; | |
616 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
617 | #ifdef CONFIG_CIFS_STATS2 |
618 | mid_entry->when_received = jiffies; | |
619 | #endif | |
3a5ff61c SF |
620 | /* so we do not time out requests to server |
621 | which is still responding (since server could | |
622 | be busy but not dead) */ | |
623 | server->lstrp = jiffies; | |
e4eb295d | 624 | break; |
46810cbf | 625 | } |
1da177e4 | 626 | } |
e4eb295d SF |
627 | spin_unlock(&GlobalMid_Lock); |
628 | if (task_to_wake) { | |
cd63499c | 629 | /* Was previous buf put in mpx struct for multi-rsp? */ |
fb8c4b14 | 630 | if (!isMultiRsp) { |
cd63499c | 631 | /* smb buffer will be freed by user thread */ |
26f57364 | 632 | if (isLargeBuf) |
cd63499c | 633 | bigbuf = NULL; |
26f57364 | 634 | else |
cd63499c SF |
635 | smallbuf = NULL; |
636 | } | |
e4eb295d | 637 | wake_up_process(task_to_wake); |
4b18f2a9 SF |
638 | } else if (!is_valid_oplock_break(smb_buffer, server) && |
639 | !isMultiRsp) { | |
50c2f753 SF |
640 | cERROR(1, ("No task to wake, unknown frame received! " |
641 | "NumMids %d", midCount.counter)); | |
642 | cifs_dump_mem("Received Data is: ", (char *)smb_buffer, | |
70ca734a | 643 | sizeof(struct smb_hdr)); |
3979877e SF |
644 | #ifdef CONFIG_CIFS_DEBUG2 |
645 | cifs_dump_detail(smb_buffer); | |
646 | cifs_dump_mids(server); | |
647 | #endif /* CIFS_DEBUG2 */ | |
50c2f753 | 648 | |
e4eb295d SF |
649 | } |
650 | } /* end while !EXITING */ | |
651 | ||
1da177e4 LT |
652 | spin_lock(&GlobalMid_Lock); |
653 | server->tcpStatus = CifsExiting; | |
e691b9d1 | 654 | spin_unlock(&GlobalMid_Lock); |
dbdbb876 | 655 | wake_up_all(&server->response_q); |
e691b9d1 | 656 | |
31ca3bc3 SF |
657 | /* check if we have blocked requests that need to free */ |
658 | /* Note that cifs_max_pending is normally 50, but | |
659 | can be set at module install time to as little as two */ | |
e691b9d1 | 660 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 | 661 | if (atomic_read(&server->inFlight) >= cifs_max_pending) |
31ca3bc3 SF |
662 | atomic_set(&server->inFlight, cifs_max_pending - 1); |
663 | /* We do not want to set the max_pending too low or we | |
664 | could end up with the counter going negative */ | |
1da177e4 | 665 | spin_unlock(&GlobalMid_Lock); |
50c2f753 | 666 | /* Although there should not be any requests blocked on |
1da177e4 | 667 | this queue it can not hurt to be paranoid and try to wake up requests |
09d1db5c | 668 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
669 | to the same server - they now will see the session is in exit state |
670 | and get out of SendReceive. */ | |
671 | wake_up_all(&server->request_q); | |
672 | /* give those requests time to exit */ | |
b8643e1b | 673 | msleep(125); |
50c2f753 | 674 | |
fb8c4b14 | 675 | if (server->ssocket) { |
1da177e4 LT |
676 | sock_release(csocket); |
677 | server->ssocket = NULL; | |
678 | } | |
b8643e1b | 679 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
a8a11d39 MK |
680 | cifs_buf_release(bigbuf); |
681 | if (smallbuf) /* no sense logging a debug message if NULL */ | |
b8643e1b | 682 | cifs_small_buf_release(smallbuf); |
1da177e4 LT |
683 | |
684 | read_lock(&GlobalSMBSeslock); | |
685 | if (list_empty(&server->pending_mid_q)) { | |
09d1db5c SF |
686 | /* loop through server session structures attached to this and |
687 | mark them dead */ | |
1da177e4 LT |
688 | list_for_each(tmp, &GlobalSMBSessionList) { |
689 | ses = | |
690 | list_entry(tmp, struct cifsSesInfo, | |
691 | cifsSessionList); | |
692 | if (ses->server == server) { | |
693 | ses->status = CifsExiting; | |
694 | ses->server = NULL; | |
695 | } | |
696 | } | |
697 | read_unlock(&GlobalSMBSeslock); | |
698 | } else { | |
31ca3bc3 SF |
699 | /* although we can not zero the server struct pointer yet, |
700 | since there are active requests which may depnd on them, | |
701 | mark the corresponding SMB sessions as exiting too */ | |
702 | list_for_each(tmp, &GlobalSMBSessionList) { | |
703 | ses = list_entry(tmp, struct cifsSesInfo, | |
704 | cifsSessionList); | |
26f57364 | 705 | if (ses->server == server) |
31ca3bc3 | 706 | ses->status = CifsExiting; |
31ca3bc3 SF |
707 | } |
708 | ||
1da177e4 LT |
709 | spin_lock(&GlobalMid_Lock); |
710 | list_for_each(tmp, &server->pending_mid_q) { | |
711 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
712 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
50c2f753 SF |
713 | cFYI(1, ("Clearing Mid 0x%x - waking up ", |
714 | mid_entry->mid)); | |
1da177e4 | 715 | task_to_wake = mid_entry->tsk; |
26f57364 | 716 | if (task_to_wake) |
1da177e4 | 717 | wake_up_process(task_to_wake); |
1da177e4 LT |
718 | } |
719 | } | |
720 | spin_unlock(&GlobalMid_Lock); | |
721 | read_unlock(&GlobalSMBSeslock); | |
1da177e4 | 722 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 723 | msleep(125); |
1da177e4 LT |
724 | } |
725 | ||
f191401f | 726 | if (!list_empty(&server->pending_mid_q)) { |
50c2f753 | 727 | /* mpx threads have not exited yet give them |
1da177e4 | 728 | at least the smb send timeout time for long ops */ |
31ca3bc3 SF |
729 | /* due to delays on oplock break requests, we need |
730 | to wait at least 45 seconds before giving up | |
731 | on a request getting a response and going ahead | |
732 | and killing cifsd */ | |
1da177e4 | 733 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 734 | msleep(46000); |
1da177e4 LT |
735 | /* if threads still have not exited they are probably never |
736 | coming home not much else we can do but free the memory */ | |
737 | } | |
1da177e4 | 738 | |
31ca3bc3 SF |
739 | /* last chance to mark ses pointers invalid |
740 | if there are any pointing to this (e.g | |
50c2f753 | 741 | if a crazy root user tried to kill cifsd |
31ca3bc3 | 742 | kernel thread explicitly this might happen) */ |
93d0ec85 | 743 | write_lock(&GlobalSMBSeslock); |
31ca3bc3 SF |
744 | list_for_each(tmp, &GlobalSMBSessionList) { |
745 | ses = list_entry(tmp, struct cifsSesInfo, | |
746 | cifsSessionList); | |
26f57364 | 747 | if (ses->server == server) |
31ca3bc3 | 748 | ses->server = NULL; |
31ca3bc3 | 749 | } |
1da177e4 | 750 | write_unlock(&GlobalSMBSeslock); |
31ca3bc3 | 751 | |
c359cf3c | 752 | kfree(server->hostname); |
b1c8d2b4 | 753 | task_to_wake = xchg(&server->tsk, NULL); |
31ca3bc3 | 754 | kfree(server); |
93d0ec85 JL |
755 | |
756 | length = atomic_dec_return(&tcpSesAllocCount); | |
26f57364 SF |
757 | if (length > 0) |
758 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, | |
759 | GFP_KERNEL); | |
50c2f753 | 760 | |
b1c8d2b4 JL |
761 | /* if server->tsk was NULL then wait for a signal before exiting */ |
762 | if (!task_to_wake) { | |
763 | set_current_state(TASK_INTERRUPTIBLE); | |
764 | while (!signal_pending(current)) { | |
765 | schedule(); | |
766 | set_current_state(TASK_INTERRUPTIBLE); | |
767 | } | |
768 | set_current_state(TASK_RUNNING); | |
769 | } | |
770 | ||
1da177e4 LT |
771 | return 0; |
772 | } | |
773 | ||
c359cf3c JL |
774 | /* extract the host portion of the UNC string */ |
775 | static char * | |
776 | extract_hostname(const char *unc) | |
777 | { | |
778 | const char *src; | |
779 | char *dst, *delim; | |
780 | unsigned int len; | |
781 | ||
782 | /* skip double chars at beginning of string */ | |
783 | /* BB: check validity of these bytes? */ | |
784 | src = unc + 2; | |
785 | ||
786 | /* delimiter between hostname and sharename is always '\\' now */ | |
787 | delim = strchr(src, '\\'); | |
788 | if (!delim) | |
789 | return ERR_PTR(-EINVAL); | |
790 | ||
791 | len = delim - src; | |
792 | dst = kmalloc((len + 1), GFP_KERNEL); | |
793 | if (dst == NULL) | |
794 | return ERR_PTR(-ENOMEM); | |
795 | ||
796 | memcpy(dst, src, len); | |
797 | dst[len] = '\0'; | |
798 | ||
799 | return dst; | |
800 | } | |
801 | ||
1da177e4 | 802 | static int |
50c2f753 SF |
803 | cifs_parse_mount_options(char *options, const char *devname, |
804 | struct smb_vol *vol) | |
1da177e4 LT |
805 | { |
806 | char *value; | |
807 | char *data; | |
808 | unsigned int temp_len, i, j; | |
809 | char separator[2]; | |
810 | ||
811 | separator[0] = ','; | |
50c2f753 | 812 | separator[1] = 0; |
1da177e4 | 813 | |
12e36b2f | 814 | if (Local_System_Name[0] != 0) |
50c2f753 | 815 | memcpy(vol->source_rfc1001_name, Local_System_Name, 15); |
2cd646a2 | 816 | else { |
12e36b2f | 817 | char *nodename = utsname()->nodename; |
50c2f753 SF |
818 | int n = strnlen(nodename, 15); |
819 | memset(vol->source_rfc1001_name, 0x20, 15); | |
820 | for (i = 0; i < n; i++) { | |
2cd646a2 SF |
821 | /* does not have to be perfect mapping since field is |
822 | informational, only used for servers that do not support | |
823 | port 445 and it can be overridden at mount time */ | |
12e36b2f | 824 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
2cd646a2 | 825 | } |
1da177e4 LT |
826 | } |
827 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
828 | /* null target name indicates to use *SMBSERVR default called name |
829 | if we end up sending RFC1001 session initialize */ | |
830 | vol->target_rfc1001_name[0] = 0; | |
1da177e4 LT |
831 | vol->linux_uid = current->uid; /* current->euid instead? */ |
832 | vol->linux_gid = current->gid; | |
833 | vol->dir_mode = S_IRWXUGO; | |
834 | /* 2767 perms indicate mandatory locking support */ | |
7505e052 | 835 | vol->file_mode = (S_IRWXUGO | S_ISGID) & (~S_IXGRP); |
1da177e4 LT |
836 | |
837 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
4b18f2a9 | 838 | vol->rw = true; |
ac67055e JA |
839 | /* default is always to request posix paths. */ |
840 | vol->posix_paths = 1; | |
841 | ||
1da177e4 LT |
842 | if (!options) |
843 | return 1; | |
844 | ||
50c2f753 | 845 | if (strncmp(options, "sep=", 4) == 0) { |
fb8c4b14 | 846 | if (options[4] != 0) { |
1da177e4 LT |
847 | separator[0] = options[4]; |
848 | options += 5; | |
849 | } else { | |
467a8f8d | 850 | cFYI(1, ("Null separator not allowed")); |
1da177e4 LT |
851 | } |
852 | } | |
50c2f753 | 853 | |
1da177e4 LT |
854 | while ((data = strsep(&options, separator)) != NULL) { |
855 | if (!*data) | |
856 | continue; | |
857 | if ((value = strchr(data, '=')) != NULL) | |
858 | *value++ = '\0'; | |
859 | ||
50c2f753 SF |
860 | /* Have to parse this before we parse for "user" */ |
861 | if (strnicmp(data, "user_xattr", 10) == 0) { | |
1da177e4 | 862 | vol->no_xattr = 0; |
50c2f753 | 863 | } else if (strnicmp(data, "nouser_xattr", 12) == 0) { |
1da177e4 LT |
864 | vol->no_xattr = 1; |
865 | } else if (strnicmp(data, "user", 4) == 0) { | |
4b952a9b | 866 | if (!value) { |
1da177e4 LT |
867 | printk(KERN_WARNING |
868 | "CIFS: invalid or missing username\n"); | |
869 | return 1; /* needs_arg; */ | |
fb8c4b14 | 870 | } else if (!*value) { |
4b952a9b SF |
871 | /* null user, ie anonymous, authentication */ |
872 | vol->nullauth = 1; | |
1da177e4 LT |
873 | } |
874 | if (strnlen(value, 200) < 200) { | |
875 | vol->username = value; | |
876 | } else { | |
877 | printk(KERN_WARNING "CIFS: username too long\n"); | |
878 | return 1; | |
879 | } | |
880 | } else if (strnicmp(data, "pass", 4) == 0) { | |
881 | if (!value) { | |
882 | vol->password = NULL; | |
883 | continue; | |
fb8c4b14 | 884 | } else if (value[0] == 0) { |
1da177e4 LT |
885 | /* check if string begins with double comma |
886 | since that would mean the password really | |
887 | does start with a comma, and would not | |
888 | indicate an empty string */ | |
fb8c4b14 | 889 | if (value[1] != separator[0]) { |
1da177e4 LT |
890 | vol->password = NULL; |
891 | continue; | |
892 | } | |
893 | } | |
894 | temp_len = strlen(value); | |
895 | /* removed password length check, NTLM passwords | |
896 | can be arbitrarily long */ | |
897 | ||
50c2f753 | 898 | /* if comma in password, the string will be |
1da177e4 LT |
899 | prematurely null terminated. Commas in password are |
900 | specified across the cifs mount interface by a double | |
901 | comma ie ,, and a comma used as in other cases ie ',' | |
902 | as a parameter delimiter/separator is single and due | |
903 | to the strsep above is temporarily zeroed. */ | |
904 | ||
905 | /* NB: password legally can have multiple commas and | |
906 | the only illegal character in a password is null */ | |
907 | ||
50c2f753 | 908 | if ((value[temp_len] == 0) && |
09d1db5c | 909 | (value[temp_len+1] == separator[0])) { |
1da177e4 LT |
910 | /* reinsert comma */ |
911 | value[temp_len] = separator[0]; | |
50c2f753 SF |
912 | temp_len += 2; /* move after second comma */ |
913 | while (value[temp_len] != 0) { | |
1da177e4 | 914 | if (value[temp_len] == separator[0]) { |
50c2f753 | 915 | if (value[temp_len+1] == |
09d1db5c SF |
916 | separator[0]) { |
917 | /* skip second comma */ | |
918 | temp_len++; | |
50c2f753 | 919 | } else { |
1da177e4 LT |
920 | /* single comma indicating start |
921 | of next parm */ | |
922 | break; | |
923 | } | |
924 | } | |
925 | temp_len++; | |
926 | } | |
fb8c4b14 | 927 | if (value[temp_len] == 0) { |
1da177e4 LT |
928 | options = NULL; |
929 | } else { | |
930 | value[temp_len] = 0; | |
931 | /* point option to start of next parm */ | |
932 | options = value + temp_len + 1; | |
933 | } | |
50c2f753 | 934 | /* go from value to value + temp_len condensing |
1da177e4 LT |
935 | double commas to singles. Note that this ends up |
936 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 937 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
fb8c4b14 | 938 | if (vol->password == NULL) { |
50c2f753 SF |
939 | printk(KERN_WARNING "CIFS: no memory " |
940 | "for password\n"); | |
433dc24f SF |
941 | return 1; |
942 | } | |
50c2f753 | 943 | for (i = 0, j = 0; i < temp_len; i++, j++) { |
1da177e4 | 944 | vol->password[j] = value[i]; |
fb8c4b14 | 945 | if (value[i] == separator[0] |
09d1db5c | 946 | && value[i+1] == separator[0]) { |
1da177e4 LT |
947 | /* skip second comma */ |
948 | i++; | |
949 | } | |
950 | } | |
951 | vol->password[j] = 0; | |
952 | } else { | |
e915fc49 | 953 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
fb8c4b14 | 954 | if (vol->password == NULL) { |
50c2f753 SF |
955 | printk(KERN_WARNING "CIFS: no memory " |
956 | "for password\n"); | |
433dc24f SF |
957 | return 1; |
958 | } | |
1da177e4 LT |
959 | strcpy(vol->password, value); |
960 | } | |
961 | } else if (strnicmp(data, "ip", 2) == 0) { | |
962 | if (!value || !*value) { | |
963 | vol->UNCip = NULL; | |
964 | } else if (strnlen(value, 35) < 35) { | |
965 | vol->UNCip = value; | |
966 | } else { | |
50c2f753 SF |
967 | printk(KERN_WARNING "CIFS: ip address " |
968 | "too long\n"); | |
1da177e4 LT |
969 | return 1; |
970 | } | |
50c2f753 SF |
971 | } else if (strnicmp(data, "sec", 3) == 0) { |
972 | if (!value || !*value) { | |
973 | cERROR(1, ("no security value specified")); | |
974 | continue; | |
975 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
976 | vol->secFlg |= CIFSSEC_MAY_KRB5 | | |
189acaae | 977 | CIFSSEC_MUST_SIGN; |
bf820679 | 978 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
50c2f753 SF |
979 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
980 | CIFSSEC_MAY_KRB5; */ | |
981 | cERROR(1, ("Krb5 cifs privacy not supported")); | |
bf820679 SF |
982 | return 1; |
983 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 984 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
bf820679 | 985 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 986 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 987 | CIFSSEC_MUST_SIGN; |
bf820679 | 988 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 989 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 990 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 991 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 992 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
993 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
994 | /* ntlm is default so can be turned off too */ | |
750d1151 | 995 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 996 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 997 | /* BB is there a better way to do this? */ |
750d1151 | 998 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
999 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
1000 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
50c2f753 | 1001 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 1002 | #endif |
bf820679 | 1003 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 1004 | vol->nullauth = 1; |
50c2f753 SF |
1005 | } else { |
1006 | cERROR(1, ("bad security option: %s", value)); | |
1007 | return 1; | |
1008 | } | |
1da177e4 LT |
1009 | } else if ((strnicmp(data, "unc", 3) == 0) |
1010 | || (strnicmp(data, "target", 6) == 0) | |
1011 | || (strnicmp(data, "path", 4) == 0)) { | |
1012 | if (!value || !*value) { | |
50c2f753 SF |
1013 | printk(KERN_WARNING "CIFS: invalid path to " |
1014 | "network resource\n"); | |
1da177e4 LT |
1015 | return 1; /* needs_arg; */ |
1016 | } | |
1017 | if ((temp_len = strnlen(value, 300)) < 300) { | |
50c2f753 | 1018 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1019 | if (vol->UNC == NULL) |
1da177e4 | 1020 | return 1; |
50c2f753 | 1021 | strcpy(vol->UNC, value); |
1da177e4 LT |
1022 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1023 | vol->UNC[0] = '\\'; | |
1024 | vol->UNC[1] = '\\'; | |
50c2f753 | 1025 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
1da177e4 | 1026 | printk(KERN_WARNING |
50c2f753 SF |
1027 | "CIFS: UNC Path does not begin " |
1028 | "with // or \\\\ \n"); | |
1da177e4 LT |
1029 | return 1; |
1030 | } | |
1031 | } else { | |
1032 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1033 | return 1; | |
1034 | } | |
1035 | } else if ((strnicmp(data, "domain", 3) == 0) | |
1036 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
1037 | if (!value || !*value) { | |
1038 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
1039 | return 1; /* needs_arg; */ | |
1040 | } | |
1041 | /* BB are there cases in which a comma can be valid in | |
1042 | a domain name and need special handling? */ | |
3979877e | 1043 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
1044 | vol->domainname = value; |
1045 | cFYI(1, ("Domain name set")); | |
1046 | } else { | |
50c2f753 SF |
1047 | printk(KERN_WARNING "CIFS: domain name too " |
1048 | "long\n"); | |
1da177e4 LT |
1049 | return 1; |
1050 | } | |
50c2f753 SF |
1051 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
1052 | if (!value || !*value) { | |
1053 | printk(KERN_WARNING | |
1054 | "CIFS: invalid path prefix\n"); | |
1055 | return 1; /* needs_argument */ | |
1056 | } | |
1057 | if ((temp_len = strnlen(value, 1024)) < 1024) { | |
4523cc30 | 1058 | if (value[0] != '/') |
2fe87f02 | 1059 | temp_len++; /* missing leading slash */ |
50c2f753 SF |
1060 | vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); |
1061 | if (vol->prepath == NULL) | |
1062 | return 1; | |
4523cc30 | 1063 | if (value[0] != '/') { |
2fe87f02 | 1064 | vol->prepath[0] = '/'; |
50c2f753 | 1065 | strcpy(vol->prepath+1, value); |
2fe87f02 | 1066 | } else |
50c2f753 SF |
1067 | strcpy(vol->prepath, value); |
1068 | cFYI(1, ("prefix path %s", vol->prepath)); | |
1069 | } else { | |
1070 | printk(KERN_WARNING "CIFS: prefix too long\n"); | |
1071 | return 1; | |
1072 | } | |
1da177e4 LT |
1073 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
1074 | if (!value || !*value) { | |
63135e08 SF |
1075 | printk(KERN_WARNING "CIFS: invalid iocharset " |
1076 | "specified\n"); | |
1da177e4 LT |
1077 | return 1; /* needs_arg; */ |
1078 | } | |
1079 | if (strnlen(value, 65) < 65) { | |
50c2f753 | 1080 | if (strnicmp(value, "default", 7)) |
1da177e4 | 1081 | vol->iocharset = value; |
50c2f753 SF |
1082 | /* if iocharset not set then load_nls_default |
1083 | is used by caller */ | |
1084 | cFYI(1, ("iocharset set to %s", value)); | |
1da177e4 | 1085 | } else { |
63135e08 SF |
1086 | printk(KERN_WARNING "CIFS: iocharset name " |
1087 | "too long.\n"); | |
1da177e4 LT |
1088 | return 1; |
1089 | } | |
1090 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1091 | if (value && *value) { | |
1092 | vol->linux_uid = | |
1093 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1094 | vol->override_uid = 1; |
1da177e4 LT |
1095 | } |
1096 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1097 | if (value && *value) { | |
1098 | vol->linux_gid = | |
1099 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1100 | vol->override_gid = 1; |
1da177e4 LT |
1101 | } |
1102 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1103 | if (value && *value) { | |
1104 | vol->file_mode = | |
1105 | simple_strtoul(value, &value, 0); | |
1106 | } | |
1107 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1108 | if (value && *value) { | |
1109 | vol->dir_mode = | |
1110 | simple_strtoul(value, &value, 0); | |
1111 | } | |
1112 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1113 | if (value && *value) { | |
1114 | vol->dir_mode = | |
1115 | simple_strtoul(value, &value, 0); | |
1116 | } | |
1117 | } else if (strnicmp(data, "port", 4) == 0) { | |
1118 | if (value && *value) { | |
1119 | vol->port = | |
1120 | simple_strtoul(value, &value, 0); | |
1121 | } | |
1122 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1123 | if (value && *value) { | |
1124 | vol->rsize = | |
1125 | simple_strtoul(value, &value, 0); | |
1126 | } | |
1127 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1128 | if (value && *value) { | |
1129 | vol->wsize = | |
1130 | simple_strtoul(value, &value, 0); | |
1131 | } | |
1132 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1133 | if (value && *value) { | |
1134 | vol->sockopt = | |
1135 | simple_strtoul(value, &value, 0); | |
1136 | } | |
1137 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1138 | if (!value || !*value || (*value == ' ')) { | |
63135e08 | 1139 | cFYI(1, ("invalid (empty) netbiosname")); |
1da177e4 | 1140 | } else { |
50c2f753 SF |
1141 | memset(vol->source_rfc1001_name, 0x20, 15); |
1142 | for (i = 0; i < 15; i++) { | |
1143 | /* BB are there cases in which a comma can be | |
1da177e4 LT |
1144 | valid in this workstation netbios name (and need |
1145 | special handling)? */ | |
1146 | ||
1147 | /* We do not uppercase netbiosname for user */ | |
50c2f753 | 1148 | if (value[i] == 0) |
1da177e4 | 1149 | break; |
50c2f753 SF |
1150 | else |
1151 | vol->source_rfc1001_name[i] = | |
1152 | value[i]; | |
1da177e4 LT |
1153 | } |
1154 | /* The string has 16th byte zero still from | |
1155 | set at top of the function */ | |
50c2f753 SF |
1156 | if ((i == 15) && (value[i] != 0)) |
1157 | printk(KERN_WARNING "CIFS: netbiosname" | |
1158 | " longer than 15 truncated.\n"); | |
a10faeb2 SF |
1159 | } |
1160 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1161 | /* servernetbiosname specified override *SMBSERVER */ | |
1162 | if (!value || !*value || (*value == ' ')) { | |
467a8f8d | 1163 | cFYI(1, ("empty server netbiosname specified")); |
a10faeb2 SF |
1164 | } else { |
1165 | /* last byte, type, is 0x20 for servr type */ | |
50c2f753 | 1166 | memset(vol->target_rfc1001_name, 0x20, 16); |
a10faeb2 | 1167 | |
50c2f753 | 1168 | for (i = 0; i < 15; i++) { |
a10faeb2 | 1169 | /* BB are there cases in which a comma can be |
50c2f753 SF |
1170 | valid in this workstation netbios name |
1171 | (and need special handling)? */ | |
a10faeb2 | 1172 | |
50c2f753 SF |
1173 | /* user or mount helper must uppercase |
1174 | the netbiosname */ | |
1175 | if (value[i] == 0) | |
a10faeb2 SF |
1176 | break; |
1177 | else | |
50c2f753 SF |
1178 | vol->target_rfc1001_name[i] = |
1179 | value[i]; | |
a10faeb2 SF |
1180 | } |
1181 | /* The string has 16th byte zero still from | |
1182 | set at top of the function */ | |
50c2f753 SF |
1183 | if ((i == 15) && (value[i] != 0)) |
1184 | printk(KERN_WARNING "CIFS: server net" | |
1185 | "biosname longer than 15 truncated.\n"); | |
1da177e4 LT |
1186 | } |
1187 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1188 | /* ignore */ | |
1189 | } else if (strnicmp(data, "version", 3) == 0) { | |
1190 | /* ignore */ | |
50c2f753 | 1191 | } else if (strnicmp(data, "guest", 5) == 0) { |
1da177e4 LT |
1192 | /* ignore */ |
1193 | } else if (strnicmp(data, "rw", 2) == 0) { | |
4b18f2a9 | 1194 | vol->rw = true; |
1da177e4 LT |
1195 | } else if ((strnicmp(data, "suid", 4) == 0) || |
1196 | (strnicmp(data, "nosuid", 6) == 0) || | |
1197 | (strnicmp(data, "exec", 4) == 0) || | |
1198 | (strnicmp(data, "noexec", 6) == 0) || | |
1199 | (strnicmp(data, "nodev", 5) == 0) || | |
1200 | (strnicmp(data, "noauto", 6) == 0) || | |
1201 | (strnicmp(data, "dev", 3) == 0)) { | |
1202 | /* The mount tool or mount.cifs helper (if present) | |
50c2f753 SF |
1203 | uses these opts to set flags, and the flags are read |
1204 | by the kernel vfs layer before we get here (ie | |
1205 | before read super) so there is no point trying to | |
1206 | parse these options again and set anything and it | |
1207 | is ok to just ignore them */ | |
1da177e4 LT |
1208 | continue; |
1209 | } else if (strnicmp(data, "ro", 2) == 0) { | |
4b18f2a9 | 1210 | vol->rw = false; |
1da177e4 LT |
1211 | } else if (strnicmp(data, "hard", 4) == 0) { |
1212 | vol->retry = 1; | |
1213 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1214 | vol->retry = 0; | |
1215 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1216 | vol->noperm = 0; | |
1217 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1218 | vol->noperm = 1; | |
6a0b4824 SF |
1219 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1220 | vol->remap = 1; | |
1221 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1222 | vol->remap = 0; | |
50c2f753 SF |
1223 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1224 | vol->sfu_emul = 1; | |
1225 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1226 | vol->sfu_emul = 0; | |
2c1b8615 SF |
1227 | } else if (strnicmp(data, "nodfs", 5) == 0) { |
1228 | vol->nodfs = 1; | |
ac67055e JA |
1229 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1230 | vol->posix_paths = 1; | |
1231 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1232 | vol->posix_paths = 0; | |
c18c842b SF |
1233 | } else if (strnicmp(data, "nounix", 6) == 0) { |
1234 | vol->no_linux_ext = 1; | |
1235 | } else if (strnicmp(data, "nolinux", 7) == 0) { | |
1236 | vol->no_linux_ext = 1; | |
50c2f753 | 1237 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
a10faeb2 | 1238 | (strnicmp(data, "ignorecase", 10) == 0)) { |
50c2f753 | 1239 | vol->nocase = 1; |
c46fa8ac SF |
1240 | } else if (strnicmp(data, "brl", 3) == 0) { |
1241 | vol->nobrl = 0; | |
50c2f753 | 1242 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1243 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1244 | vol->nobrl = 1; |
d3485d37 SF |
1245 | /* turn off mandatory locking in mode |
1246 | if remote locking is turned off since the | |
1247 | local vfs will do advisory */ | |
50c2f753 SF |
1248 | if (vol->file_mode == |
1249 | (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
d3485d37 | 1250 | vol->file_mode = S_IALLUGO; |
1da177e4 LT |
1251 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1252 | vol->setuids = 1; | |
1253 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1254 | vol->setuids = 0; | |
d0a9c078 JL |
1255 | } else if (strnicmp(data, "dynperm", 7) == 0) { |
1256 | vol->dynperm = true; | |
1257 | } else if (strnicmp(data, "nodynperm", 9) == 0) { | |
1258 | vol->dynperm = false; | |
1da177e4 LT |
1259 | } else if (strnicmp(data, "nohard", 6) == 0) { |
1260 | vol->retry = 0; | |
1261 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1262 | vol->retry = 1; | |
1263 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1264 | vol->intr = 0; | |
1265 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1266 | vol->intr = 1; | |
50c2f753 | 1267 | } else if (strnicmp(data, "serverino", 7) == 0) { |
1da177e4 | 1268 | vol->server_ino = 1; |
50c2f753 | 1269 | } else if (strnicmp(data, "noserverino", 9) == 0) { |
1da177e4 | 1270 | vol->server_ino = 0; |
50c2f753 | 1271 | } else if (strnicmp(data, "cifsacl", 7) == 0) { |
0a4b92c0 SF |
1272 | vol->cifs_acl = 1; |
1273 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1274 | vol->cifs_acl = 0; | |
50c2f753 | 1275 | } else if (strnicmp(data, "acl", 3) == 0) { |
1da177e4 | 1276 | vol->no_psx_acl = 0; |
50c2f753 | 1277 | } else if (strnicmp(data, "noacl", 5) == 0) { |
1da177e4 | 1278 | vol->no_psx_acl = 1; |
84210e91 SF |
1279 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
1280 | } else if (strnicmp(data, "locallease", 6) == 0) { | |
1281 | vol->local_lease = 1; | |
1282 | #endif | |
50c2f753 | 1283 | } else if (strnicmp(data, "sign", 4) == 0) { |
750d1151 | 1284 | vol->secFlg |= CIFSSEC_MUST_SIGN; |
95b1cb90 SF |
1285 | } else if (strnicmp(data, "seal", 4) == 0) { |
1286 | /* we do not do the following in secFlags because seal | |
1287 | is a per tree connection (mount) not a per socket | |
1288 | or per-smb connection option in the protocol */ | |
1289 | /* vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
1290 | vol->seal = 1; | |
50c2f753 | 1291 | } else if (strnicmp(data, "direct", 6) == 0) { |
1da177e4 | 1292 | vol->direct_io = 1; |
50c2f753 | 1293 | } else if (strnicmp(data, "forcedirectio", 13) == 0) { |
1da177e4 | 1294 | vol->direct_io = 1; |
50c2f753 | 1295 | } else if (strnicmp(data, "in6_addr", 8) == 0) { |
1da177e4 LT |
1296 | if (!value || !*value) { |
1297 | vol->in6_addr = NULL; | |
1298 | } else if (strnlen(value, 49) == 48) { | |
1299 | vol->in6_addr = value; | |
1300 | } else { | |
50c2f753 SF |
1301 | printk(KERN_WARNING "CIFS: ip v6 address not " |
1302 | "48 characters long\n"); | |
1da177e4 LT |
1303 | return 1; |
1304 | } | |
1305 | } else if (strnicmp(data, "noac", 4) == 0) { | |
50c2f753 SF |
1306 | printk(KERN_WARNING "CIFS: Mount option noac not " |
1307 | "supported. Instead set " | |
1308 | "/proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1da177e4 | 1309 | } else |
50c2f753 SF |
1310 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n", |
1311 | data); | |
1da177e4 LT |
1312 | } |
1313 | if (vol->UNC == NULL) { | |
4523cc30 | 1314 | if (devname == NULL) { |
50c2f753 SF |
1315 | printk(KERN_WARNING "CIFS: Missing UNC name for mount " |
1316 | "target\n"); | |
1da177e4 LT |
1317 | return 1; |
1318 | } | |
1319 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
50c2f753 | 1320 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1321 | if (vol->UNC == NULL) |
1da177e4 | 1322 | return 1; |
50c2f753 | 1323 | strcpy(vol->UNC, devname); |
1da177e4 LT |
1324 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1325 | vol->UNC[0] = '\\'; | |
1326 | vol->UNC[1] = '\\'; | |
1327 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
50c2f753 SF |
1328 | printk(KERN_WARNING "CIFS: UNC Path does not " |
1329 | "begin with // or \\\\ \n"); | |
1da177e4 LT |
1330 | return 1; |
1331 | } | |
7c5e628f IM |
1332 | value = strpbrk(vol->UNC+2, "/\\"); |
1333 | if (value) | |
1334 | *value = '\\'; | |
1da177e4 LT |
1335 | } else { |
1336 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1337 | return 1; | |
1338 | } | |
1339 | } | |
fb8c4b14 | 1340 | if (vol->UNCip == NULL) |
1da177e4 LT |
1341 | vol->UNCip = &vol->UNC[2]; |
1342 | ||
1343 | return 0; | |
1344 | } | |
1345 | ||
1346 | static struct cifsSesInfo * | |
50c2f753 | 1347 | cifs_find_tcp_session(struct in_addr *target_ip_addr, |
1b20d672 CG |
1348 | struct in6_addr *target_ip6_addr, |
1349 | char *userName, struct TCP_Server_Info **psrvTcp) | |
1da177e4 LT |
1350 | { |
1351 | struct list_head *tmp; | |
1352 | struct cifsSesInfo *ses; | |
1b20d672 | 1353 | |
1da177e4 | 1354 | *psrvTcp = NULL; |
1da177e4 | 1355 | |
1b20d672 | 1356 | read_lock(&GlobalSMBSeslock); |
1da177e4 LT |
1357 | list_for_each(tmp, &GlobalSMBSessionList) { |
1358 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
1b20d672 CG |
1359 | if (!ses->server) |
1360 | continue; | |
1361 | ||
1362 | if (target_ip_addr && | |
1363 | ses->server->addr.sockAddr.sin_addr.s_addr != target_ip_addr->s_addr) | |
1364 | continue; | |
1365 | else if (target_ip6_addr && | |
1366 | memcmp(&ses->server->addr.sockAddr6.sin6_addr, | |
1367 | target_ip6_addr, sizeof(*target_ip6_addr))) | |
1368 | continue; | |
02eadeff | 1369 | /* BB lock server and tcp session; increment use count here?? */ |
1b20d672 CG |
1370 | |
1371 | /* found a match on the TCP session */ | |
1372 | *psrvTcp = ses->server; | |
1373 | ||
1374 | /* BB check if reconnection needed */ | |
1375 | if (strncmp(ses->userName, userName, MAX_USERNAME_SIZE) == 0) { | |
1376 | read_unlock(&GlobalSMBSeslock); | |
1377 | /* Found exact match on both TCP and | |
1378 | SMB sessions */ | |
1379 | return ses; | |
1da177e4 LT |
1380 | } |
1381 | /* else tcp and smb sessions need reconnection */ | |
1382 | } | |
1383 | read_unlock(&GlobalSMBSeslock); | |
1b20d672 | 1384 | |
1da177e4 LT |
1385 | return NULL; |
1386 | } | |
1387 | ||
1388 | static struct cifsTconInfo * | |
1389 | find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) | |
1390 | { | |
1391 | struct list_head *tmp; | |
1392 | struct cifsTconInfo *tcon; | |
dea570e0 | 1393 | __be32 old_ip; |
1da177e4 LT |
1394 | |
1395 | read_lock(&GlobalSMBSeslock); | |
dea570e0 | 1396 | |
1da177e4 | 1397 | list_for_each(tmp, &GlobalTreeConnectionList) { |
e466e487 | 1398 | cFYI(1, ("Next tcon")); |
1da177e4 | 1399 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); |
dea570e0 SF |
1400 | if (!tcon->ses || !tcon->ses->server) |
1401 | continue; | |
1402 | ||
1403 | old_ip = tcon->ses->server->addr.sockAddr.sin_addr.s_addr; | |
1404 | cFYI(1, ("old ip addr: %x == new ip %x ?", | |
1405 | old_ip, new_target_ip_addr)); | |
1406 | ||
1407 | if (old_ip != new_target_ip_addr) | |
1408 | continue; | |
1409 | ||
1410 | /* BB lock tcon, server, tcp session and increment use count? */ | |
1411 | /* found a match on the TCP session */ | |
1412 | /* BB check if reconnection needed */ | |
1413 | cFYI(1, ("IP match, old UNC: %s new: %s", | |
1414 | tcon->treeName, uncName)); | |
1415 | ||
1416 | if (strncmp(tcon->treeName, uncName, MAX_TREE_SIZE)) | |
1417 | continue; | |
1418 | ||
1419 | cFYI(1, ("and old usr: %s new: %s", | |
1420 | tcon->treeName, uncName)); | |
1421 | ||
1422 | if (strncmp(tcon->ses->userName, userName, MAX_USERNAME_SIZE)) | |
1423 | continue; | |
1424 | ||
1425 | /* matched smb session (user name) */ | |
1426 | read_unlock(&GlobalSMBSeslock); | |
1427 | return tcon; | |
1da177e4 | 1428 | } |
dea570e0 | 1429 | |
1da177e4 LT |
1430 | read_unlock(&GlobalSMBSeslock); |
1431 | return NULL; | |
1432 | } | |
1433 | ||
1da177e4 | 1434 | int |
50c2f753 SF |
1435 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, |
1436 | const struct nls_table *nls_codepage, unsigned int *pnum_referrals, | |
366781c1 | 1437 | struct dfs_info3_param **preferrals, int remap) |
1da177e4 LT |
1438 | { |
1439 | char *temp_unc; | |
1440 | int rc = 0; | |
1441 | ||
1442 | *pnum_referrals = 0; | |
366781c1 | 1443 | *preferrals = NULL; |
1da177e4 LT |
1444 | |
1445 | if (pSesInfo->ipc_tid == 0) { | |
1446 | temp_unc = kmalloc(2 /* for slashes */ + | |
50c2f753 SF |
1447 | strnlen(pSesInfo->serverName, |
1448 | SERVER_NAME_LEN_WITH_NULL * 2) | |
1da177e4 LT |
1449 | + 1 + 4 /* slash IPC$ */ + 2, |
1450 | GFP_KERNEL); | |
1451 | if (temp_unc == NULL) | |
1452 | return -ENOMEM; | |
1453 | temp_unc[0] = '\\'; | |
1454 | temp_unc[1] = '\\'; | |
1455 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1456 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1457 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1458 | cFYI(1, | |
50c2f753 | 1459 | ("CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid)); |
1da177e4 LT |
1460 | kfree(temp_unc); |
1461 | } | |
1462 | if (rc == 0) | |
c2cf07d5 | 1463 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, |
737b758c | 1464 | pnum_referrals, nls_codepage, remap); |
366781c1 SF |
1465 | /* BB map targetUNCs to dfs_info3 structures, here or |
1466 | in CIFSGetDFSRefer BB */ | |
1da177e4 LT |
1467 | |
1468 | return rc; | |
1469 | } | |
1470 | ||
09e50d55 JL |
1471 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
1472 | static struct lock_class_key cifs_key[2]; | |
1473 | static struct lock_class_key cifs_slock_key[2]; | |
1474 | ||
1475 | static inline void | |
1476 | cifs_reclassify_socket4(struct socket *sock) | |
1477 | { | |
1478 | struct sock *sk = sock->sk; | |
1479 | BUG_ON(sock_owned_by_user(sk)); | |
1480 | sock_lock_init_class_and_name(sk, "slock-AF_INET-CIFS", | |
1481 | &cifs_slock_key[0], "sk_lock-AF_INET-CIFS", &cifs_key[0]); | |
1482 | } | |
1483 | ||
1484 | static inline void | |
1485 | cifs_reclassify_socket6(struct socket *sock) | |
1486 | { | |
1487 | struct sock *sk = sock->sk; | |
1488 | BUG_ON(sock_owned_by_user(sk)); | |
1489 | sock_lock_init_class_and_name(sk, "slock-AF_INET6-CIFS", | |
1490 | &cifs_slock_key[1], "sk_lock-AF_INET6-CIFS", &cifs_key[1]); | |
1491 | } | |
1492 | #else | |
1493 | static inline void | |
1494 | cifs_reclassify_socket4(struct socket *sock) | |
1495 | { | |
1496 | } | |
1497 | ||
1498 | static inline void | |
1499 | cifs_reclassify_socket6(struct socket *sock) | |
1500 | { | |
1501 | } | |
1502 | #endif | |
1503 | ||
1da177e4 | 1504 | /* See RFC1001 section 14 on representation of Netbios names */ |
50c2f753 | 1505 | static void rfc1002mangle(char *target, char *source, unsigned int length) |
1da177e4 | 1506 | { |
50c2f753 | 1507 | unsigned int i, j; |
1da177e4 | 1508 | |
50c2f753 | 1509 | for (i = 0, j = 0; i < (length); i++) { |
1da177e4 LT |
1510 | /* mask a nibble at a time and encode */ |
1511 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1512 | target[j+1] = 'A' + (0x0F & source[i]); | |
50c2f753 | 1513 | j += 2; |
1da177e4 LT |
1514 | } |
1515 | ||
1516 | } | |
1517 | ||
1518 | ||
1519 | static int | |
50c2f753 SF |
1520 | ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, |
1521 | char *netbios_name, char *target_name) | |
1da177e4 LT |
1522 | { |
1523 | int rc = 0; | |
1524 | int connected = 0; | |
1525 | __be16 orig_port = 0; | |
1526 | ||
fb8c4b14 | 1527 | if (*csocket == NULL) { |
50c2f753 SF |
1528 | rc = sock_create_kern(PF_INET, SOCK_STREAM, |
1529 | IPPROTO_TCP, csocket); | |
1da177e4 | 1530 | if (rc < 0) { |
50c2f753 | 1531 | cERROR(1, ("Error %d creating socket", rc)); |
1da177e4 LT |
1532 | *csocket = NULL; |
1533 | return rc; | |
1534 | } else { | |
1535 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
467a8f8d | 1536 | cFYI(1, ("Socket created")); |
50c2f753 | 1537 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
09e50d55 | 1538 | cifs_reclassify_socket4(*csocket); |
1da177e4 LT |
1539 | } |
1540 | } | |
1541 | ||
1542 | psin_server->sin_family = AF_INET; | |
fb8c4b14 | 1543 | if (psin_server->sin_port) { /* user overrode default port */ |
1da177e4 LT |
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; | |
50c2f753 | 1549 | } |
1da177e4 | 1550 | |
fb8c4b14 | 1551 | if (!connected) { |
50c2f753 | 1552 | /* save original port so we can retry user specified port |
1da177e4 LT |
1553 | later if fall back ports fail this time */ |
1554 | orig_port = psin_server->sin_port; | |
1555 | ||
1556 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1557 | if (psin_server->sin_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1558 | psin_server->sin_port = htons(CIFS_PORT); |
1559 | ||
1560 | rc = (*csocket)->ops->connect(*csocket, | |
1561 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1562 | sizeof(struct sockaddr_in), 0); |
1da177e4 LT |
1563 | if (rc >= 0) |
1564 | connected = 1; | |
1565 | } | |
1566 | } | |
1567 | if (!connected) { | |
1568 | psin_server->sin_port = htons(RFC1001_PORT); | |
1569 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
50c2f753 | 1570 | psin_server, |
6345a3a8 | 1571 | sizeof(struct sockaddr_in), 0); |
50c2f753 | 1572 | if (rc >= 0) |
1da177e4 LT |
1573 | connected = 1; |
1574 | } | |
1575 | ||
1576 | /* give up here - unless we want to retry on different | |
1577 | protocol families some day */ | |
1578 | if (!connected) { | |
fb8c4b14 | 1579 | if (orig_port) |
1da177e4 | 1580 | psin_server->sin_port = orig_port; |
50c2f753 | 1581 | cFYI(1, ("Error %d connecting to server via ipv4", rc)); |
1da177e4 LT |
1582 | sock_release(*csocket); |
1583 | *csocket = NULL; | |
1584 | return rc; | |
1585 | } | |
50c2f753 SF |
1586 | /* Eventually check for other socket options to change from |
1587 | the default. sock_setsockopt not used because it expects | |
1da177e4 | 1588 | user space buffer */ |
50c2f753 SF |
1589 | cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", |
1590 | (*csocket)->sk->sk_sndbuf, | |
b387eaeb | 1591 | (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo)); |
1da177e4 | 1592 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; |
b387eaeb | 1593 | /* make the bufsizes depend on wsize/rsize and max requests */ |
fb8c4b14 | 1594 | if ((*csocket)->sk->sk_sndbuf < (200 * 1024)) |
b387eaeb | 1595 | (*csocket)->sk->sk_sndbuf = 200 * 1024; |
fb8c4b14 | 1596 | if ((*csocket)->sk->sk_rcvbuf < (140 * 1024)) |
b387eaeb | 1597 | (*csocket)->sk->sk_rcvbuf = 140 * 1024; |
1da177e4 LT |
1598 | |
1599 | /* send RFC1001 sessinit */ | |
fb8c4b14 | 1600 | if (psin_server->sin_port == htons(RFC1001_PORT)) { |
1da177e4 | 1601 | /* some servers require RFC1001 sessinit before sending |
50c2f753 | 1602 | negprot - BB check reconnection in case where second |
1da177e4 | 1603 | sessinit is sent but no second negprot */ |
50c2f753 SF |
1604 | struct rfc1002_session_packet *ses_init_buf; |
1605 | struct smb_hdr *smb_buf; | |
1606 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), | |
1607 | GFP_KERNEL); | |
fb8c4b14 | 1608 | if (ses_init_buf) { |
1da177e4 | 1609 | ses_init_buf->trailer.session_req.called_len = 32; |
fb8c4b14 | 1610 | if (target_name && (target_name[0] != 0)) { |
a10faeb2 SF |
1611 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, |
1612 | target_name, 16); | |
1613 | } else { | |
1614 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
50c2f753 | 1615 | DEFAULT_CIFS_CALLED_NAME, 16); |
a10faeb2 SF |
1616 | } |
1617 | ||
1da177e4 LT |
1618 | ses_init_buf->trailer.session_req.calling_len = 32; |
1619 | /* calling name ends in null (byte 16) from old smb | |
1620 | convention. */ | |
50c2f753 | 1621 | if (netbios_name && (netbios_name[0] != 0)) { |
1da177e4 | 1622 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, |
50c2f753 | 1623 | netbios_name, 16); |
1da177e4 LT |
1624 | } else { |
1625 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
50c2f753 | 1626 | "LINUX_CIFS_CLNT", 16); |
1da177e4 LT |
1627 | } |
1628 | ses_init_buf->trailer.session_req.scope1 = 0; | |
1629 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1630 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1631 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1632 | smb_buf->smb_buf_length = 0x81000044; | |
1633 | rc = smb_send(*csocket, smb_buf, 0x44, | |
1634 | (struct sockaddr *)psin_server); | |
1635 | kfree(ses_init_buf); | |
50c2f753 | 1636 | msleep(1); /* RFC1001 layer in at least one server |
083d3a2c SF |
1637 | requires very short break before negprot |
1638 | presumably because not expecting negprot | |
1639 | to follow so fast. This is a simple | |
50c2f753 | 1640 | solution that works without |
083d3a2c SF |
1641 | complicating the code and causes no |
1642 | significant slowing down on mount | |
1643 | for everyone else */ | |
1da177e4 | 1644 | } |
50c2f753 | 1645 | /* else the negprot may still work without this |
1da177e4 | 1646 | even though malloc failed */ |
50c2f753 | 1647 | |
1da177e4 | 1648 | } |
50c2f753 | 1649 | |
1da177e4 LT |
1650 | return rc; |
1651 | } | |
1652 | ||
1653 | static int | |
1654 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket) | |
1655 | { | |
1656 | int rc = 0; | |
1657 | int connected = 0; | |
1658 | __be16 orig_port = 0; | |
1659 | ||
fb8c4b14 | 1660 | if (*csocket == NULL) { |
50c2f753 SF |
1661 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, |
1662 | IPPROTO_TCP, csocket); | |
1da177e4 | 1663 | if (rc < 0) { |
50c2f753 | 1664 | cERROR(1, ("Error %d creating ipv6 socket", rc)); |
1da177e4 LT |
1665 | *csocket = NULL; |
1666 | return rc; | |
1667 | } else { | |
1668 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
fb8c4b14 | 1669 | cFYI(1, ("ipv6 Socket created")); |
1da177e4 | 1670 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
09e50d55 | 1671 | cifs_reclassify_socket6(*csocket); |
1da177e4 LT |
1672 | } |
1673 | } | |
1674 | ||
1675 | psin_server->sin6_family = AF_INET6; | |
1676 | ||
fb8c4b14 | 1677 | if (psin_server->sin6_port) { /* user overrode default port */ |
1da177e4 LT |
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; | |
50c2f753 | 1683 | } |
1da177e4 | 1684 | |
fb8c4b14 | 1685 | if (!connected) { |
50c2f753 | 1686 | /* save original port so we can retry user specified port |
1da177e4 LT |
1687 | later if fall back ports fail this time */ |
1688 | ||
1689 | orig_port = psin_server->sin6_port; | |
1690 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1691 | if (psin_server->sin6_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1692 | psin_server->sin6_port = htons(CIFS_PORT); |
1693 | ||
1694 | rc = (*csocket)->ops->connect(*csocket, | |
1695 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1696 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1697 | if (rc >= 0) |
1698 | connected = 1; | |
1699 | } | |
1700 | } | |
1701 | if (!connected) { | |
1702 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1703 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
6345a3a8 | 1704 | psin_server, sizeof(struct sockaddr_in6), 0); |
50c2f753 | 1705 | if (rc >= 0) |
1da177e4 LT |
1706 | connected = 1; |
1707 | } | |
1708 | ||
1709 | /* give up here - unless we want to retry on different | |
1710 | protocol families some day */ | |
1711 | if (!connected) { | |
fb8c4b14 | 1712 | if (orig_port) |
1da177e4 | 1713 | psin_server->sin6_port = orig_port; |
50c2f753 | 1714 | cFYI(1, ("Error %d connecting to server via ipv6", rc)); |
1da177e4 LT |
1715 | sock_release(*csocket); |
1716 | *csocket = NULL; | |
1717 | return rc; | |
1718 | } | |
50c2f753 SF |
1719 | /* Eventually check for other socket options to change from |
1720 | the default. sock_setsockopt not used because it expects | |
1da177e4 LT |
1721 | user space buffer */ |
1722 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
50c2f753 | 1723 | |
1da177e4 LT |
1724 | return rc; |
1725 | } | |
1726 | ||
50c2f753 SF |
1727 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon, |
1728 | struct super_block *sb, struct smb_vol *vol_info) | |
8af18971 SF |
1729 | { |
1730 | /* if we are reconnecting then should we check to see if | |
1731 | * any requested capabilities changed locally e.g. via | |
1732 | * remount but we can not do much about it here | |
1733 | * if they have (even if we could detect it by the following) | |
1734 | * Perhaps we could add a backpointer to array of sb from tcon | |
1735 | * or if we change to make all sb to same share the same | |
1736 | * sb as NFS - then we only have one backpointer to sb. | |
1737 | * What if we wanted to mount the server share twice once with | |
1738 | * and once without posixacls or posix paths? */ | |
1739 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
50c2f753 | 1740 | |
c18c842b SF |
1741 | if (vol_info && vol_info->no_linux_ext) { |
1742 | tcon->fsUnixInfo.Capability = 0; | |
1743 | tcon->unix_ext = 0; /* Unix Extensions disabled */ | |
1744 | cFYI(1, ("Linux protocol extensions disabled")); | |
1745 | return; | |
1746 | } else if (vol_info) | |
1747 | tcon->unix_ext = 1; /* Unix Extensions supported */ | |
1748 | ||
1749 | if (tcon->unix_ext == 0) { | |
1750 | cFYI(1, ("Unix extensions disabled so not set on reconnect")); | |
1751 | return; | |
1752 | } | |
50c2f753 | 1753 | |
fb8c4b14 | 1754 | if (!CIFSSMBQFSUnixInfo(xid, tcon)) { |
8af18971 | 1755 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
50c2f753 | 1756 | |
8af18971 SF |
1757 | /* check for reconnect case in which we do not |
1758 | want to change the mount behavior if we can avoid it */ | |
fb8c4b14 | 1759 | if (vol_info == NULL) { |
50c2f753 | 1760 | /* turn off POSIX ACL and PATHNAMES if not set |
8af18971 SF |
1761 | originally at mount time */ |
1762 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) | |
1763 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
11b6d645 IM |
1764 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1765 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) | |
1766 | cERROR(1, ("POSIXPATH support change")); | |
8af18971 | 1767 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
11b6d645 IM |
1768 | } else if ((cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1769 | cERROR(1, ("possible reconnect error")); | |
1770 | cERROR(1, | |
1771 | ("server disabled POSIX path support")); | |
1772 | } | |
8af18971 | 1773 | } |
50c2f753 | 1774 | |
8af18971 | 1775 | cap &= CIFS_UNIX_CAP_MASK; |
75865f8c | 1776 | if (vol_info && vol_info->no_psx_acl) |
8af18971 | 1777 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
75865f8c | 1778 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
fb8c4b14 SF |
1779 | cFYI(1, ("negotiated posix acl support")); |
1780 | if (sb) | |
8af18971 SF |
1781 | sb->s_flags |= MS_POSIXACL; |
1782 | } | |
1783 | ||
75865f8c | 1784 | if (vol_info && vol_info->posix_paths == 0) |
8af18971 | 1785 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
75865f8c | 1786 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
fb8c4b14 | 1787 | cFYI(1, ("negotiate posix pathnames")); |
75865f8c | 1788 | if (sb) |
50c2f753 | 1789 | CIFS_SB(sb)->mnt_cifs_flags |= |
8af18971 SF |
1790 | CIFS_MOUNT_POSIX_PATHS; |
1791 | } | |
50c2f753 | 1792 | |
984acfe1 SF |
1793 | /* We might be setting the path sep back to a different |
1794 | form if we are reconnecting and the server switched its | |
50c2f753 | 1795 | posix path capability for this share */ |
75865f8c | 1796 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
984acfe1 | 1797 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
75865f8c SF |
1798 | |
1799 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { | |
1800 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { | |
1801 | CIFS_SB(sb)->rsize = 127 * 1024; | |
90c81e0b SF |
1802 | cFYI(DBG2, |
1803 | ("larger reads not supported by srv")); | |
75865f8c SF |
1804 | } |
1805 | } | |
50c2f753 SF |
1806 | |
1807 | ||
1808 | cFYI(1, ("Negotiate caps 0x%x", (int)cap)); | |
8af18971 | 1809 | #ifdef CONFIG_CIFS_DEBUG2 |
75865f8c | 1810 | if (cap & CIFS_UNIX_FCNTL_CAP) |
fb8c4b14 | 1811 | cFYI(1, ("FCNTL cap")); |
75865f8c | 1812 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
fb8c4b14 | 1813 | cFYI(1, ("EXTATTR cap")); |
75865f8c | 1814 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
fb8c4b14 | 1815 | cFYI(1, ("POSIX path cap")); |
75865f8c | 1816 | if (cap & CIFS_UNIX_XATTR_CAP) |
fb8c4b14 | 1817 | cFYI(1, ("XATTR cap")); |
75865f8c | 1818 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
fb8c4b14 | 1819 | cFYI(1, ("POSIX ACL cap")); |
75865f8c | 1820 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
fb8c4b14 | 1821 | cFYI(1, ("very large read cap")); |
75865f8c | 1822 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) |
fb8c4b14 | 1823 | cFYI(1, ("very large write cap")); |
8af18971 SF |
1824 | #endif /* CIFS_DEBUG2 */ |
1825 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
442aa310 | 1826 | if (vol_info == NULL) { |
5a44b319 | 1827 | cFYI(1, ("resetting capabilities failed")); |
442aa310 | 1828 | } else |
5a44b319 SF |
1829 | cERROR(1, ("Negotiating Unix capabilities " |
1830 | "with the server failed. Consider " | |
1831 | "mounting with the Unix Extensions\n" | |
1832 | "disabled, if problems are found, " | |
1833 | "by specifying the nounix mount " | |
2224f4e5 | 1834 | "option.")); |
5a44b319 | 1835 | |
8af18971 SF |
1836 | } |
1837 | } | |
1838 | } | |
1839 | ||
03a143c9 SF |
1840 | static void |
1841 | convert_delimiter(char *path, char delim) | |
1842 | { | |
1843 | int i; | |
c2d68ea6 | 1844 | char old_delim; |
03a143c9 SF |
1845 | |
1846 | if (path == NULL) | |
1847 | return; | |
1848 | ||
582d21e5 | 1849 | if (delim == '/') |
c2d68ea6 SF |
1850 | old_delim = '\\'; |
1851 | else | |
1852 | old_delim = '/'; | |
1853 | ||
03a143c9 | 1854 | for (i = 0; path[i] != '\0'; i++) { |
c2d68ea6 | 1855 | if (path[i] == old_delim) |
03a143c9 SF |
1856 | path[i] = delim; |
1857 | } | |
1858 | } | |
1859 | ||
b1c8d2b4 JL |
1860 | static void |
1861 | kill_cifsd(struct TCP_Server_Info *server) | |
1862 | { | |
1863 | struct task_struct *task; | |
1864 | ||
1865 | task = xchg(&server->tsk, NULL); | |
1866 | if (task) | |
1867 | force_sig(SIGKILL, task); | |
1868 | } | |
1869 | ||
1da177e4 LT |
1870 | int |
1871 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1872 | char *mount_data, const char *devname) | |
1873 | { | |
1874 | int rc = 0; | |
1875 | int xid; | |
1876 | int address_type = AF_INET; | |
1877 | struct socket *csocket = NULL; | |
1878 | struct sockaddr_in sin_server; | |
1879 | struct sockaddr_in6 sin_server6; | |
1880 | struct smb_vol volume_info; | |
1881 | struct cifsSesInfo *pSesInfo = NULL; | |
1882 | struct cifsSesInfo *existingCifsSes = NULL; | |
1883 | struct cifsTconInfo *tcon = NULL; | |
1884 | struct TCP_Server_Info *srvTcp = NULL; | |
1885 | ||
1886 | xid = GetXid(); | |
1887 | ||
1888 | /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ | |
50c2f753 SF |
1889 | |
1890 | memset(&volume_info, 0, sizeof(struct smb_vol)); | |
1da177e4 | 1891 | if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { |
70fe7dc0 JL |
1892 | rc = -EINVAL; |
1893 | goto out; | |
1da177e4 LT |
1894 | } |
1895 | ||
8426c39c | 1896 | if (volume_info.nullauth) { |
fb8c4b14 | 1897 | cFYI(1, ("null user")); |
9b8f5f57 | 1898 | volume_info.username = ""; |
8426c39c | 1899 | } else if (volume_info.username) { |
1da177e4 | 1900 | /* BB fixme parse for domain name here */ |
467a8f8d | 1901 | cFYI(1, ("Username: %s", volume_info.username)); |
1da177e4 | 1902 | } else { |
bf820679 | 1903 | cifserror("No username specified"); |
50c2f753 SF |
1904 | /* In userspace mount helper we can get user name from alternate |
1905 | locations such as env variables and files on disk */ | |
70fe7dc0 JL |
1906 | rc = -EINVAL; |
1907 | goto out; | |
1da177e4 LT |
1908 | } |
1909 | ||
1910 | if (volume_info.UNCip && volume_info.UNC) { | |
50c2f753 SF |
1911 | rc = cifs_inet_pton(AF_INET, volume_info.UNCip, |
1912 | &sin_server.sin_addr.s_addr); | |
1da177e4 | 1913 | |
fb8c4b14 | 1914 | if (rc <= 0) { |
1da177e4 | 1915 | /* not ipv4 address, try ipv6 */ |
50c2f753 SF |
1916 | rc = cifs_inet_pton(AF_INET6, volume_info.UNCip, |
1917 | &sin_server6.sin6_addr.in6_u); | |
fb8c4b14 | 1918 | if (rc > 0) |
1da177e4 LT |
1919 | address_type = AF_INET6; |
1920 | } else { | |
1921 | address_type = AF_INET; | |
1922 | } | |
50c2f753 | 1923 | |
fb8c4b14 | 1924 | if (rc <= 0) { |
1da177e4 | 1925 | /* we failed translating address */ |
70fe7dc0 JL |
1926 | rc = -EINVAL; |
1927 | goto out; | |
1da177e4 LT |
1928 | } |
1929 | ||
1930 | cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); | |
1931 | /* success */ | |
1932 | rc = 0; | |
50c2f753 SF |
1933 | } else if (volume_info.UNCip) { |
1934 | /* BB using ip addr as server name to connect to the | |
1935 | DFS root below */ | |
1936 | cERROR(1, ("Connecting to DFS root not implemented yet")); | |
70fe7dc0 JL |
1937 | rc = -EINVAL; |
1938 | goto out; | |
1da177e4 LT |
1939 | } else /* which servers DFS root would we conect to */ { |
1940 | cERROR(1, | |
50c2f753 SF |
1941 | ("CIFS mount error: No UNC path (e.g. -o " |
1942 | "unc=//192.168.1.100/public) specified")); | |
70fe7dc0 JL |
1943 | rc = -EINVAL; |
1944 | goto out; | |
1da177e4 LT |
1945 | } |
1946 | ||
1947 | /* this is needed for ASCII cp to Unicode converts */ | |
fb8c4b14 | 1948 | if (volume_info.iocharset == NULL) { |
1da177e4 LT |
1949 | cifs_sb->local_nls = load_nls_default(); |
1950 | /* load_nls_default can not return null */ | |
1951 | } else { | |
1952 | cifs_sb->local_nls = load_nls(volume_info.iocharset); | |
fb8c4b14 | 1953 | if (cifs_sb->local_nls == NULL) { |
50c2f753 SF |
1954 | cERROR(1, ("CIFS mount error: iocharset %s not found", |
1955 | volume_info.iocharset)); | |
70fe7dc0 JL |
1956 | rc = -ELIBACC; |
1957 | goto out; | |
1da177e4 LT |
1958 | } |
1959 | } | |
1960 | ||
fb8c4b14 | 1961 | if (address_type == AF_INET) |
1da177e4 LT |
1962 | existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr, |
1963 | NULL /* no ipv6 addr */, | |
1964 | volume_info.username, &srvTcp); | |
fb8c4b14 SF |
1965 | else if (address_type == AF_INET6) { |
1966 | cFYI(1, ("looking for ipv6 address")); | |
1da177e4 LT |
1967 | existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */, |
1968 | &sin_server6.sin6_addr, | |
1969 | volume_info.username, &srvTcp); | |
5858ae44 | 1970 | } else { |
70fe7dc0 JL |
1971 | rc = -EINVAL; |
1972 | goto out; | |
1da177e4 LT |
1973 | } |
1974 | ||
1da177e4 | 1975 | if (srvTcp) { |
50c2f753 | 1976 | cFYI(1, ("Existing tcp session with server found")); |
1da177e4 | 1977 | } else { /* create socket */ |
4523cc30 | 1978 | if (volume_info.port) |
1da177e4 LT |
1979 | sin_server.sin_port = htons(volume_info.port); |
1980 | else | |
1981 | sin_server.sin_port = 0; | |
5858ae44 | 1982 | if (address_type == AF_INET6) { |
fb8c4b14 | 1983 | cFYI(1, ("attempting ipv6 connect")); |
5858ae44 SF |
1984 | /* BB should we allow ipv6 on port 139? */ |
1985 | /* other OS never observed in Wild doing 139 with v6 */ | |
50c2f753 SF |
1986 | rc = ipv6_connect(&sin_server6, &csocket); |
1987 | } else | |
1988 | rc = ipv4_connect(&sin_server, &csocket, | |
a10faeb2 SF |
1989 | volume_info.source_rfc1001_name, |
1990 | volume_info.target_rfc1001_name); | |
1da177e4 | 1991 | if (rc < 0) { |
50c2f753 SF |
1992 | cERROR(1, ("Error connecting to IPv4 socket. " |
1993 | "Aborting operation")); | |
4523cc30 | 1994 | if (csocket != NULL) |
1da177e4 | 1995 | sock_release(csocket); |
70fe7dc0 | 1996 | goto out; |
1da177e4 LT |
1997 | } |
1998 | ||
a8a11d39 MK |
1999 | srvTcp = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); |
2000 | if (!srvTcp) { | |
1da177e4 LT |
2001 | rc = -ENOMEM; |
2002 | sock_release(csocket); | |
70fe7dc0 | 2003 | goto out; |
1da177e4 | 2004 | } else { |
50c2f753 | 2005 | memcpy(&srvTcp->addr.sockAddr, &sin_server, |
6345a3a8 | 2006 | sizeof(struct sockaddr_in)); |
50c2f753 | 2007 | atomic_set(&srvTcp->inFlight, 0); |
1da177e4 LT |
2008 | /* BB Add code for ipv6 case too */ |
2009 | srvTcp->ssocket = csocket; | |
2010 | srvTcp->protocolType = IPV4; | |
c359cf3c JL |
2011 | srvTcp->hostname = extract_hostname(volume_info.UNC); |
2012 | if (IS_ERR(srvTcp->hostname)) { | |
2013 | rc = PTR_ERR(srvTcp->hostname); | |
2014 | sock_release(csocket); | |
2015 | goto out; | |
2016 | } | |
1da177e4 LT |
2017 | init_waitqueue_head(&srvTcp->response_q); |
2018 | init_waitqueue_head(&srvTcp->request_q); | |
2019 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
2020 | /* at this point we are the only ones with the pointer | |
2021 | to the struct since the kernel thread not created yet | |
2022 | so no need to spinlock this init of tcpStatus */ | |
2023 | srvTcp->tcpStatus = CifsNew; | |
2024 | init_MUTEX(&srvTcp->tcpSem); | |
aaf737ad | 2025 | srvTcp->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, srvTcp, "cifsd"); |
8840dee9 | 2026 | if (IS_ERR(srvTcp->tsk)) { |
aaf737ad | 2027 | rc = PTR_ERR(srvTcp->tsk); |
50c2f753 | 2028 | cERROR(1, ("error %d create cifsd thread", rc)); |
aaf737ad | 2029 | srvTcp->tsk = NULL; |
1da177e4 | 2030 | sock_release(csocket); |
c359cf3c | 2031 | kfree(srvTcp->hostname); |
70fe7dc0 | 2032 | goto out; |
f191401f | 2033 | } |
f191401f | 2034 | rc = 0; |
50c2f753 SF |
2035 | memcpy(srvTcp->workstation_RFC1001_name, |
2036 | volume_info.source_rfc1001_name, 16); | |
2037 | memcpy(srvTcp->server_RFC1001_name, | |
2038 | volume_info.target_rfc1001_name, 16); | |
ad009ac9 | 2039 | srvTcp->sequence_number = 0; |
1da177e4 LT |
2040 | } |
2041 | } | |
2042 | ||
2043 | if (existingCifsSes) { | |
2044 | pSesInfo = existingCifsSes; | |
1d9a8852 JL |
2045 | cFYI(1, ("Existing smb sess found (status=%d)", |
2046 | pSesInfo->status)); | |
88e7d705 | 2047 | down(&pSesInfo->sesSem); |
1d9a8852 JL |
2048 | if (pSesInfo->status == CifsNeedReconnect) { |
2049 | cFYI(1, ("Session needs reconnect")); | |
1d9a8852 JL |
2050 | rc = cifs_setup_session(xid, pSesInfo, |
2051 | cifs_sb->local_nls); | |
1d9a8852 | 2052 | } |
88e7d705 | 2053 | up(&pSesInfo->sesSem); |
1da177e4 | 2054 | } else if (!rc) { |
bf820679 | 2055 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 LT |
2056 | pSesInfo = sesInfoAlloc(); |
2057 | if (pSesInfo == NULL) | |
2058 | rc = -ENOMEM; | |
2059 | else { | |
2060 | pSesInfo->server = srvTcp; | |
2061 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
2062 | NIPQUAD(sin_server.sin_addr.s_addr)); | |
2063 | } | |
2064 | ||
50c2f753 SF |
2065 | if (!rc) { |
2066 | /* volume_info.password freed at unmount */ | |
70fe7dc0 | 2067 | if (volume_info.password) { |
1da177e4 | 2068 | pSesInfo->password = volume_info.password; |
70fe7dc0 JL |
2069 | /* set to NULL to prevent freeing on exit */ |
2070 | volume_info.password = NULL; | |
2071 | } | |
1da177e4 LT |
2072 | if (volume_info.username) |
2073 | strncpy(pSesInfo->userName, | |
50c2f753 SF |
2074 | volume_info.username, |
2075 | MAX_USERNAME_SIZE); | |
3979877e SF |
2076 | if (volume_info.domainname) { |
2077 | int len = strlen(volume_info.domainname); | |
50c2f753 | 2078 | pSesInfo->domainName = |
3979877e | 2079 | kmalloc(len + 1, GFP_KERNEL); |
4523cc30 | 2080 | if (pSesInfo->domainName) |
3979877e SF |
2081 | strcpy(pSesInfo->domainName, |
2082 | volume_info.domainname); | |
2083 | } | |
1da177e4 | 2084 | pSesInfo->linux_uid = volume_info.linux_uid; |
750d1151 | 2085 | pSesInfo->overrideSecFlg = volume_info.secFlg; |
1da177e4 | 2086 | down(&pSesInfo->sesSem); |
189acaae | 2087 | /* BB FIXME need to pass vol->secFlgs BB */ |
50c2f753 SF |
2088 | rc = cifs_setup_session(xid, pSesInfo, |
2089 | cifs_sb->local_nls); | |
1da177e4 | 2090 | up(&pSesInfo->sesSem); |
4523cc30 | 2091 | if (!rc) |
1da177e4 | 2092 | atomic_inc(&srvTcp->socketUseCount); |
70fe7dc0 | 2093 | } |
1da177e4 | 2094 | } |
50c2f753 | 2095 | |
1da177e4 LT |
2096 | /* search for existing tcon to this server share */ |
2097 | if (!rc) { | |
4523cc30 | 2098 | if (volume_info.rsize > CIFSMaxBufSize) { |
50c2f753 | 2099 | cERROR(1, ("rsize %d too large, using MaxBufSize", |
0ae0efad SF |
2100 | volume_info.rsize)); |
2101 | cifs_sb->rsize = CIFSMaxBufSize; | |
75865f8c SF |
2102 | } else if ((volume_info.rsize) && |
2103 | (volume_info.rsize <= CIFSMaxBufSize)) | |
1da177e4 | 2104 | cifs_sb->rsize = volume_info.rsize; |
0ae0efad SF |
2105 | else /* default */ |
2106 | cifs_sb->rsize = CIFSMaxBufSize; | |
2107 | ||
4523cc30 | 2108 | if (volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { |
50c2f753 | 2109 | cERROR(1, ("wsize %d too large, using 4096 instead", |
0ae0efad SF |
2110 | volume_info.wsize)); |
2111 | cifs_sb->wsize = 4096; | |
4523cc30 | 2112 | } else if (volume_info.wsize) |
1da177e4 LT |
2113 | cifs_sb->wsize = volume_info.wsize; |
2114 | else | |
50c2f753 | 2115 | cifs_sb->wsize = |
1877c9ea SF |
2116 | min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE, |
2117 | 127*1024); | |
17cbbafe | 2118 | /* old default of CIFSMaxBufSize was too small now |
50c2f753 | 2119 | that SMB Write2 can send multiple pages in kvec. |
17cbbafe SF |
2120 | RFC1001 does not describe what happens when frame |
2121 | bigger than 128K is sent so use that as max in | |
2122 | conjunction with 52K kvec constraint on arch with 4K | |
2123 | page size */ | |
2124 | ||
4523cc30 | 2125 | if (cifs_sb->rsize < 2048) { |
50c2f753 | 2126 | cifs_sb->rsize = 2048; |
6cec2aed | 2127 | /* Windows ME may prefer this */ |
467a8f8d | 2128 | cFYI(1, ("readsize set to minimum: 2048")); |
1da177e4 | 2129 | } |
2fe87f02 SF |
2130 | /* calculate prepath */ |
2131 | cifs_sb->prepath = volume_info.prepath; | |
4523cc30 | 2132 | if (cifs_sb->prepath) { |
2fe87f02 | 2133 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); |
03a143c9 SF |
2134 | /* we can not convert the / to \ in the path |
2135 | separators in the prefixpath yet because we do not | |
2136 | know (until reset_cifs_unix_caps is called later) | |
2137 | whether POSIX PATH CAP is available. We normalize | |
2138 | the / to \ after reset_cifs_unix_caps is called */ | |
2fe87f02 | 2139 | volume_info.prepath = NULL; |
50c2f753 | 2140 | } else |
2fe87f02 | 2141 | cifs_sb->prepathlen = 0; |
1da177e4 LT |
2142 | cifs_sb->mnt_uid = volume_info.linux_uid; |
2143 | cifs_sb->mnt_gid = volume_info.linux_gid; | |
2144 | cifs_sb->mnt_file_mode = volume_info.file_mode; | |
2145 | cifs_sb->mnt_dir_mode = volume_info.dir_mode; | |
467a8f8d SF |
2146 | cFYI(1, ("file mode: 0x%x dir mode: 0x%x", |
2147 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode)); | |
1da177e4 | 2148 | |
4523cc30 | 2149 | if (volume_info.noperm) |
1da177e4 | 2150 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; |
4523cc30 | 2151 | if (volume_info.setuids) |
1da177e4 | 2152 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; |
4523cc30 | 2153 | if (volume_info.server_ino) |
1da177e4 | 2154 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; |
4523cc30 | 2155 | if (volume_info.remap) |
6a0b4824 | 2156 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; |
4523cc30 | 2157 | if (volume_info.no_xattr) |
1da177e4 | 2158 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; |
4523cc30 | 2159 | if (volume_info.sfu_emul) |
d7245c2c | 2160 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; |
4523cc30 | 2161 | if (volume_info.nobrl) |
c46fa8ac | 2162 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; |
4523cc30 | 2163 | if (volume_info.cifs_acl) |
0a4b92c0 | 2164 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; |
4523cc30 SF |
2165 | if (volume_info.override_uid) |
2166 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; | |
2167 | if (volume_info.override_gid) | |
2168 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; | |
d0a9c078 JL |
2169 | if (volume_info.dynperm) |
2170 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM; | |
4523cc30 | 2171 | if (volume_info.direct_io) { |
467a8f8d | 2172 | cFYI(1, ("mounting share using direct i/o")); |
1da177e4 LT |
2173 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
2174 | } | |
2175 | ||
27adb44c SF |
2176 | if ((volume_info.cifs_acl) && (volume_info.dynperm)) |
2177 | cERROR(1, ("mount option dynperm ignored if cifsacl " | |
2178 | "mount option supported")); | |
2179 | ||
1da177e4 LT |
2180 | tcon = |
2181 | find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, | |
2182 | volume_info.username); | |
2183 | if (tcon) { | |
bf820679 | 2184 | cFYI(1, ("Found match on UNC path")); |
1da177e4 LT |
2185 | /* we can have only one retry value for a connection |
2186 | to a share so for resources mounted more than once | |
50c2f753 | 2187 | to the same server share the last value passed in |
1da177e4 LT |
2188 | for the retry flag is used */ |
2189 | tcon->retry = volume_info.retry; | |
d3485d37 | 2190 | tcon->nocase = volume_info.nocase; |
84210e91 | 2191 | tcon->local_lease = volume_info.local_lease; |
95b1cb90 SF |
2192 | if (tcon->seal != volume_info.seal) |
2193 | cERROR(1, ("transport encryption setting " | |
2194 | "conflicts with existing tid")); | |
1da177e4 LT |
2195 | } else { |
2196 | tcon = tconInfoAlloc(); | |
2197 | if (tcon == NULL) | |
2198 | rc = -ENOMEM; | |
2199 | else { | |
50c2f753 | 2200 | /* check for null share name ie connecting to |
8af18971 | 2201 | * dfs root */ |
1da177e4 | 2202 | |
50c2f753 | 2203 | /* BB check if this works for exactly length |
8af18971 | 2204 | * three strings */ |
1da177e4 LT |
2205 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) |
2206 | && (strchr(volume_info.UNC + 3, '/') == | |
2207 | NULL)) { | |
646dd539 | 2208 | /* rc = connect_to_dfs_path(xid, pSesInfo, |
8af18971 | 2209 | "", cifs_sb->local_nls, |
50c2f753 | 2210 | cifs_sb->mnt_cifs_flags & |
646dd539 SF |
2211 | CIFS_MOUNT_MAP_SPECIAL_CHR);*/ |
2212 | cFYI(1, ("DFS root not supported")); | |
70fe7dc0 JL |
2213 | rc = -ENODEV; |
2214 | goto out; | |
1da177e4 | 2215 | } else { |
8af18971 SF |
2216 | /* BB Do we need to wrap sesSem around |
2217 | * this TCon call and Unix SetFS as | |
2218 | * we do on SessSetup and reconnect? */ | |
50c2f753 | 2219 | rc = CIFSTCon(xid, pSesInfo, |
1da177e4 LT |
2220 | volume_info.UNC, |
2221 | tcon, cifs_sb->local_nls); | |
2222 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
2c1b8615 SF |
2223 | if (volume_info.nodfs) { |
2224 | tcon->Flags &= | |
2225 | ~SMB_SHARE_IS_IN_DFS; | |
2226 | cFYI(1, ("DFS disabled (%d)", | |
2227 | tcon->Flags)); | |
2228 | } | |
1da177e4 LT |
2229 | } |
2230 | if (!rc) { | |
2231 | atomic_inc(&pSesInfo->inUse); | |
2232 | tcon->retry = volume_info.retry; | |
d3485d37 | 2233 | tcon->nocase = volume_info.nocase; |
95b1cb90 | 2234 | tcon->seal = volume_info.seal; |
1da177e4 LT |
2235 | } |
2236 | } | |
2237 | } | |
2238 | } | |
4523cc30 | 2239 | if (pSesInfo) { |
1da177e4 LT |
2240 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
2241 | sb->s_maxbytes = (u64) 1 << 63; | |
2242 | } else | |
2243 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
2244 | } | |
2245 | ||
8af18971 | 2246 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
1da177e4 LT |
2247 | sb->s_time_gran = 100; |
2248 | ||
2249 | /* on error free sesinfo and tcon struct if needed */ | |
2250 | if (rc) { | |
2251 | /* if session setup failed, use count is zero but | |
2252 | we still need to free cifsd thread */ | |
4523cc30 | 2253 | if (atomic_read(&srvTcp->socketUseCount) == 0) { |
1da177e4 LT |
2254 | spin_lock(&GlobalMid_Lock); |
2255 | srvTcp->tcpStatus = CifsExiting; | |
2256 | spin_unlock(&GlobalMid_Lock); | |
b1c8d2b4 | 2257 | kill_cifsd(srvTcp); |
1da177e4 LT |
2258 | } |
2259 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
2260 | if (tcon) /* up accidently freeing someone elses tcon struct */ | |
2261 | tconInfoFree(tcon); | |
2262 | if (existingCifsSes == NULL) { | |
2263 | if (pSesInfo) { | |
50c2f753 | 2264 | if ((pSesInfo->server) && |
1da177e4 LT |
2265 | (pSesInfo->status == CifsGood)) { |
2266 | int temp_rc; | |
2267 | temp_rc = CIFSSMBLogoff(xid, pSesInfo); | |
2268 | /* if the socketUseCount is now zero */ | |
4523cc30 | 2269 | if ((temp_rc == -ESHUTDOWN) && |
b1c8d2b4 JL |
2270 | (pSesInfo->server)) |
2271 | kill_cifsd(pSesInfo->server); | |
a013689d | 2272 | } else { |
1da177e4 | 2273 | cFYI(1, ("No session or bad tcon")); |
b1c8d2b4 | 2274 | if (pSesInfo->server) { |
469ee614 JL |
2275 | spin_lock(&GlobalMid_Lock); |
2276 | srvTcp->tcpStatus = CifsExiting; | |
2277 | spin_unlock(&GlobalMid_Lock); | |
b1c8d2b4 | 2278 | kill_cifsd(pSesInfo->server); |
a013689d SF |
2279 | } |
2280 | } | |
1da177e4 LT |
2281 | sesInfoFree(pSesInfo); |
2282 | /* pSesInfo = NULL; */ | |
2283 | } | |
2284 | } | |
2285 | } else { | |
2286 | atomic_inc(&tcon->useCount); | |
2287 | cifs_sb->tcon = tcon; | |
2288 | tcon->ses = pSesInfo; | |
2289 | ||
82940a46 | 2290 | /* do not care if following two calls succeed - informational */ |
7f8ed420 SF |
2291 | if (!tcon->ipc) { |
2292 | CIFSSMBQFSDeviceInfo(xid, tcon); | |
2293 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
2294 | } | |
50c2f753 | 2295 | |
8af18971 SF |
2296 | /* tell server which Unix caps we support */ |
2297 | if (tcon->ses->capabilities & CAP_UNIX) | |
c18c842b SF |
2298 | /* reset of caps checks mount to see if unix extensions |
2299 | disabled for just this mount */ | |
8af18971 | 2300 | reset_cifs_unix_caps(xid, tcon, sb, &volume_info); |
c18c842b SF |
2301 | else |
2302 | tcon->unix_ext = 0; /* server does not support them */ | |
2303 | ||
03a143c9 | 2304 | /* convert forward to back slashes in prepath here if needed */ |
11b6d645 IM |
2305 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0) |
2306 | convert_delimiter(cifs_sb->prepath, | |
2307 | CIFS_DIR_SEP(cifs_sb)); | |
03a143c9 | 2308 | |
c18c842b | 2309 | if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) { |
75865f8c | 2310 | cifs_sb->rsize = 1024 * 127; |
90c81e0b SF |
2311 | cFYI(DBG2, |
2312 | ("no very large read support, rsize now 127K")); | |
75865f8c | 2313 | } |
3e84469d SF |
2314 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
2315 | cifs_sb->wsize = min(cifs_sb->wsize, | |
2316 | (tcon->ses->server->maxBuf - | |
2317 | MAX_CIFS_HDR_SIZE)); | |
0ae0efad | 2318 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
50c2f753 SF |
2319 | cifs_sb->rsize = min(cifs_sb->rsize, |
2320 | (tcon->ses->server->maxBuf - | |
2321 | MAX_CIFS_HDR_SIZE)); | |
1da177e4 LT |
2322 | } |
2323 | ||
2324 | /* volume_info.password is freed above when existing session found | |
2325 | (in which case it is not needed anymore) but when new sesion is created | |
2326 | the password ptr is put in the new session structure (in which case the | |
2327 | password will be freed at unmount time) */ | |
70fe7dc0 JL |
2328 | out: |
2329 | /* zero out password before freeing */ | |
2330 | if (volume_info.password != NULL) { | |
2331 | memset(volume_info.password, 0, strlen(volume_info.password)); | |
2332 | kfree(volume_info.password); | |
2333 | } | |
f99d49ad | 2334 | kfree(volume_info.UNC); |
2fe87f02 | 2335 | kfree(volume_info.prepath); |
1da177e4 LT |
2336 | FreeXid(xid); |
2337 | return rc; | |
2338 | } | |
2339 | ||
2340 | static int | |
2341 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 2342 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
2343 | const struct nls_table *nls_codepage) |
2344 | { | |
2345 | struct smb_hdr *smb_buffer; | |
2346 | struct smb_hdr *smb_buffer_response; | |
2347 | SESSION_SETUP_ANDX *pSMB; | |
2348 | SESSION_SETUP_ANDX *pSMBr; | |
2349 | char *bcc_ptr; | |
2350 | char *user; | |
2351 | char *domain; | |
2352 | int rc = 0; | |
2353 | int remaining_words = 0; | |
2354 | int bytes_returned = 0; | |
2355 | int len; | |
2356 | __u32 capabilities; | |
2357 | __u16 count; | |
2358 | ||
eeac8047 | 2359 | cFYI(1, ("In sesssetup")); |
4523cc30 | 2360 | if (ses == NULL) |
1da177e4 LT |
2361 | return -EINVAL; |
2362 | user = ses->userName; | |
2363 | domain = ses->domainName; | |
2364 | smb_buffer = cifs_buf_get(); | |
582d21e5 SF |
2365 | |
2366 | if (smb_buffer == NULL) | |
1da177e4 | 2367 | return -ENOMEM; |
582d21e5 | 2368 | |
1da177e4 LT |
2369 | smb_buffer_response = smb_buffer; |
2370 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2371 | ||
2372 | /* send SMBsessionSetup here */ | |
2373 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2374 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2375 | ||
1982c344 | 2376 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2377 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2378 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2379 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2380 | ||
50c2f753 SF |
2381 | if (ses->server->secMode & |
2382 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
2383 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2384 | ||
2385 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2386 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2387 | if (ses->capabilities & CAP_UNICODE) { | |
2388 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2389 | capabilities |= CAP_UNICODE; | |
2390 | } | |
2391 | if (ses->capabilities & CAP_STATUS32) { | |
2392 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2393 | capabilities |= CAP_STATUS32; | |
2394 | } | |
2395 | if (ses->capabilities & CAP_DFS) { | |
2396 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2397 | capabilities |= CAP_DFS; | |
2398 | } | |
2399 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2400 | ||
50c2f753 | 2401 | pSMB->req_no_secext.CaseInsensitivePasswordLength = |
7c7b25bc | 2402 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2403 | |
2404 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2405 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2406 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2407 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2408 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2409 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2410 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2411 | |
2412 | if (ses->capabilities & CAP_UNICODE) { | |
2413 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2414 | *bcc_ptr = 0; | |
2415 | bcc_ptr++; | |
2416 | } | |
4523cc30 | 2417 | if (user == NULL) |
3979877e | 2418 | bytes_returned = 0; /* skip null user */ |
50c2f753 | 2419 | else |
1da177e4 | 2420 | bytes_returned = |
50c2f753 | 2421 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2422 | nls_codepage); |
2423 | /* convert number of 16 bit words to bytes */ | |
2424 | bcc_ptr += 2 * bytes_returned; | |
2425 | bcc_ptr += 2; /* trailing null */ | |
2426 | if (domain == NULL) | |
2427 | bytes_returned = | |
e89dc920 | 2428 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2429 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2430 | else | |
2431 | bytes_returned = | |
e89dc920 | 2432 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2433 | nls_codepage); |
2434 | bcc_ptr += 2 * bytes_returned; | |
2435 | bcc_ptr += 2; | |
2436 | bytes_returned = | |
e89dc920 | 2437 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2438 | 32, nls_codepage); |
2439 | bcc_ptr += 2 * bytes_returned; | |
2440 | bytes_returned = | |
e9ff3990 | 2441 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, |
1da177e4 LT |
2442 | 32, nls_codepage); |
2443 | bcc_ptr += 2 * bytes_returned; | |
2444 | bcc_ptr += 2; | |
2445 | bytes_returned = | |
e89dc920 | 2446 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2447 | 64, nls_codepage); |
2448 | bcc_ptr += 2 * bytes_returned; | |
2449 | bcc_ptr += 2; | |
2450 | } else { | |
50c2f753 | 2451 | if (user != NULL) { |
1da177e4 LT |
2452 | strncpy(bcc_ptr, user, 200); |
2453 | bcc_ptr += strnlen(user, 200); | |
2454 | } | |
2455 | *bcc_ptr = 0; | |
2456 | bcc_ptr++; | |
2457 | if (domain == NULL) { | |
2458 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2459 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2460 | } else { | |
2461 | strncpy(bcc_ptr, domain, 64); | |
2462 | bcc_ptr += strnlen(domain, 64); | |
2463 | *bcc_ptr = 0; | |
2464 | bcc_ptr++; | |
2465 | } | |
2466 | strcpy(bcc_ptr, "Linux version "); | |
2467 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2468 | strcpy(bcc_ptr, utsname()->release); |
2469 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2470 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2471 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2472 | } | |
2473 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2474 | smb_buffer->smb_buf_length += count; | |
2475 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2476 | ||
2477 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2478 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2479 | if (rc) { |
2480 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2481 | } else if ((smb_buffer_response->WordCount == 3) | |
2482 | || (smb_buffer_response->WordCount == 4)) { | |
2483 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2484 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2485 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2486 | cFYI(1, (" Guest login")); /* BB mark SesInfo struct? */ |
2487 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format | |
2488 | (little endian) */ | |
1da177e4 | 2489 | cFYI(1, ("UID = %d ", ses->Suid)); |
50c2f753 SF |
2490 | /* response can have either 3 or 4 word count - Samba sends 3 */ |
2491 | bcc_ptr = pByteArea(smb_buffer_response); | |
1da177e4 LT |
2492 | if ((pSMBr->resp.hdr.WordCount == 3) |
2493 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2494 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2495 | if (pSMBr->resp.hdr.WordCount == 4) | |
2496 | bcc_ptr += blob_len; | |
2497 | ||
2498 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2499 | if ((long) (bcc_ptr) % 2) { | |
2500 | remaining_words = | |
50c2f753 SF |
2501 | (BCC(smb_buffer_response) - 1) / 2; |
2502 | /* Unicode strings must be word | |
2503 | aligned */ | |
2504 | bcc_ptr++; | |
1da177e4 LT |
2505 | } else { |
2506 | remaining_words = | |
2507 | BCC(smb_buffer_response) / 2; | |
2508 | } | |
2509 | len = | |
2510 | UniStrnlen((wchar_t *) bcc_ptr, | |
2511 | remaining_words - 1); | |
2512 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2513 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2514 | terminating last Unicode string in response */ | |
fb8c4b14 | 2515 | if (ses->serverOS) |
a424f8bf | 2516 | kfree(ses->serverOS); |
50c2f753 SF |
2517 | ses->serverOS = kzalloc(2 * (len + 1), |
2518 | GFP_KERNEL); | |
fb8c4b14 | 2519 | if (ses->serverOS == NULL) |
433dc24f | 2520 | goto sesssetup_nomem; |
1da177e4 | 2521 | cifs_strfromUCS_le(ses->serverOS, |
50c2f753 SF |
2522 | (__le16 *)bcc_ptr, |
2523 | len, nls_codepage); | |
1da177e4 LT |
2524 | bcc_ptr += 2 * (len + 1); |
2525 | remaining_words -= len + 1; | |
2526 | ses->serverOS[2 * len] = 0; | |
2527 | ses->serverOS[1 + (2 * len)] = 0; | |
2528 | if (remaining_words > 0) { | |
2529 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2530 | remaining_words-1); | |
cd49b492 | 2531 | kfree(ses->serverNOS); |
50c2f753 SF |
2532 | ses->serverNOS = kzalloc(2 * (len + 1), |
2533 | GFP_KERNEL); | |
fb8c4b14 | 2534 | if (ses->serverNOS == NULL) |
433dc24f | 2535 | goto sesssetup_nomem; |
1da177e4 | 2536 | cifs_strfromUCS_le(ses->serverNOS, |
50c2f753 SF |
2537 | (__le16 *)bcc_ptr, |
2538 | len, nls_codepage); | |
1da177e4 LT |
2539 | bcc_ptr += 2 * (len + 1); |
2540 | ses->serverNOS[2 * len] = 0; | |
2541 | ses->serverNOS[1 + (2 * len)] = 0; | |
fb8c4b14 | 2542 | if (strncmp(ses->serverNOS, |
50c2f753 | 2543 | "NT LAN Manager 4", 16) == 0) { |
467a8f8d | 2544 | cFYI(1, ("NT4 server")); |
1da177e4 LT |
2545 | ses->flags |= CIFS_SES_NT4; |
2546 | } | |
2547 | remaining_words -= len + 1; | |
2548 | if (remaining_words > 0) { | |
433dc24f | 2549 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
50c2f753 SF |
2550 | /* last string is not always null terminated |
2551 | (for e.g. for Windows XP & 2000) */ | |
fb8c4b14 | 2552 | if (ses->serverDomain) |
a424f8bf | 2553 | kfree(ses->serverDomain); |
1da177e4 | 2554 | ses->serverDomain = |
50c2f753 SF |
2555 | kzalloc(2*(len+1), |
2556 | GFP_KERNEL); | |
fb8c4b14 | 2557 | if (ses->serverDomain == NULL) |
433dc24f | 2558 | goto sesssetup_nomem; |
1da177e4 | 2559 | cifs_strfromUCS_le(ses->serverDomain, |
50c2f753 SF |
2560 | (__le16 *)bcc_ptr, |
2561 | len, nls_codepage); | |
1da177e4 LT |
2562 | bcc_ptr += 2 * (len + 1); |
2563 | ses->serverDomain[2*len] = 0; | |
2564 | ses->serverDomain[1+(2*len)] = 0; | |
50c2f753 SF |
2565 | } else { /* else no more room so create |
2566 | dummy domain string */ | |
fb8c4b14 | 2567 | if (ses->serverDomain) |
a424f8bf | 2568 | kfree(ses->serverDomain); |
50c2f753 | 2569 | ses->serverDomain = |
e915fc49 | 2570 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2571 | } |
50c2f753 SF |
2572 | } else { /* no room so create dummy domain |
2573 | and NOS string */ | |
2574 | ||
433dc24f SF |
2575 | /* if these kcallocs fail not much we |
2576 | can do, but better to not fail the | |
2577 | sesssetup itself */ | |
cd49b492 | 2578 | kfree(ses->serverDomain); |
1da177e4 | 2579 | ses->serverDomain = |
e915fc49 | 2580 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2581 | kfree(ses->serverNOS); |
1da177e4 | 2582 | ses->serverNOS = |
e915fc49 | 2583 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2584 | } |
2585 | } else { /* ASCII */ | |
2586 | len = strnlen(bcc_ptr, 1024); | |
2587 | if (((long) bcc_ptr + len) - (long) | |
2588 | pByteArea(smb_buffer_response) | |
2589 | <= BCC(smb_buffer_response)) { | |
cd49b492 | 2590 | kfree(ses->serverOS); |
50c2f753 SF |
2591 | ses->serverOS = kzalloc(len + 1, |
2592 | GFP_KERNEL); | |
fb8c4b14 | 2593 | if (ses->serverOS == NULL) |
433dc24f | 2594 | goto sesssetup_nomem; |
50c2f753 | 2595 | strncpy(ses->serverOS, bcc_ptr, len); |
1da177e4 LT |
2596 | |
2597 | bcc_ptr += len; | |
50c2f753 SF |
2598 | /* null terminate the string */ |
2599 | bcc_ptr[0] = 0; | |
1da177e4 LT |
2600 | bcc_ptr++; |
2601 | ||
2602 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2603 | kfree(ses->serverNOS); |
50c2f753 SF |
2604 | ses->serverNOS = kzalloc(len + 1, |
2605 | GFP_KERNEL); | |
fb8c4b14 | 2606 | if (ses->serverNOS == NULL) |
433dc24f | 2607 | goto sesssetup_nomem; |
1da177e4 LT |
2608 | strncpy(ses->serverNOS, bcc_ptr, len); |
2609 | bcc_ptr += len; | |
2610 | bcc_ptr[0] = 0; | |
2611 | bcc_ptr++; | |
2612 | ||
2613 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 2614 | if (ses->serverDomain) |
a424f8bf | 2615 | kfree(ses->serverDomain); |
50c2f753 SF |
2616 | ses->serverDomain = kzalloc(len + 1, |
2617 | GFP_KERNEL); | |
fb8c4b14 | 2618 | if (ses->serverDomain == NULL) |
433dc24f | 2619 | goto sesssetup_nomem; |
50c2f753 SF |
2620 | strncpy(ses->serverDomain, bcc_ptr, |
2621 | len); | |
1da177e4 LT |
2622 | bcc_ptr += len; |
2623 | bcc_ptr[0] = 0; | |
2624 | bcc_ptr++; | |
2625 | } else | |
2626 | cFYI(1, | |
50c2f753 SF |
2627 | ("Variable field of length %d " |
2628 | "extends beyond end of smb ", | |
1da177e4 LT |
2629 | len)); |
2630 | } | |
2631 | } else { | |
2632 | cERROR(1, | |
50c2f753 SF |
2633 | (" Security Blob Length extends beyond " |
2634 | "end of SMB")); | |
1da177e4 LT |
2635 | } |
2636 | } else { | |
2637 | cERROR(1, | |
2638 | (" Invalid Word count %d: ", | |
2639 | smb_buffer_response->WordCount)); | |
2640 | rc = -EIO; | |
2641 | } | |
433dc24f SF |
2642 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2643 | since that could make reconnection harder, and | |
2644 | reconnection might be needed to free memory */ | |
a8a11d39 | 2645 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2646 | |
2647 | return rc; | |
2648 | } | |
2649 | ||
1da177e4 LT |
2650 | static int |
2651 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
4b18f2a9 | 2652 | struct cifsSesInfo *ses, bool *pNTLMv2_flag, |
1da177e4 LT |
2653 | const struct nls_table *nls_codepage) |
2654 | { | |
2655 | struct smb_hdr *smb_buffer; | |
2656 | struct smb_hdr *smb_buffer_response; | |
2657 | SESSION_SETUP_ANDX *pSMB; | |
2658 | SESSION_SETUP_ANDX *pSMBr; | |
2659 | char *bcc_ptr; | |
2660 | char *domain; | |
2661 | int rc = 0; | |
2662 | int remaining_words = 0; | |
2663 | int bytes_returned = 0; | |
2664 | int len; | |
6345a3a8 | 2665 | int SecurityBlobLength = sizeof(NEGOTIATE_MESSAGE); |
1da177e4 LT |
2666 | PNEGOTIATE_MESSAGE SecurityBlob; |
2667 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2668 | __u32 negotiate_flags, capabilities; | |
2669 | __u16 count; | |
2670 | ||
12b3b8ff | 2671 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
fb8c4b14 | 2672 | if (ses == NULL) |
1da177e4 LT |
2673 | return -EINVAL; |
2674 | domain = ses->domainName; | |
4b18f2a9 | 2675 | *pNTLMv2_flag = false; |
1da177e4 LT |
2676 | smb_buffer = cifs_buf_get(); |
2677 | if (smb_buffer == NULL) { | |
2678 | return -ENOMEM; | |
2679 | } | |
2680 | smb_buffer_response = smb_buffer; | |
2681 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2682 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2683 | ||
2684 | /* send SMBsessionSetup here */ | |
2685 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2686 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2687 | |
2688 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2689 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2690 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2691 | ||
2692 | pSMB->req.AndXCommand = 0xFF; | |
2693 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2694 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2695 | ||
fb8c4b14 | 2696 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2697 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2698 | ||
2699 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2700 | CAP_EXTENDED_SECURITY; | |
2701 | if (ses->capabilities & CAP_UNICODE) { | |
2702 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2703 | capabilities |= CAP_UNICODE; | |
2704 | } | |
2705 | if (ses->capabilities & CAP_STATUS32) { | |
2706 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2707 | capabilities |= CAP_STATUS32; | |
2708 | } | |
2709 | if (ses->capabilities & CAP_DFS) { | |
2710 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2711 | capabilities |= CAP_DFS; | |
2712 | } | |
2713 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2714 | ||
2715 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2716 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2717 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2718 | SecurityBlob->MessageType = NtLmNegotiate; | |
2719 | negotiate_flags = | |
2720 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2721 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2722 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 | 2723 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
fb8c4b14 | 2724 | if (sign_CIFS_PDUs) |
1da177e4 | 2725 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 2726 | /* if (ntlmv2_support) |
3979877e | 2727 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ |
1da177e4 LT |
2728 | /* setup pointers to domain name and workstation name */ |
2729 | bcc_ptr += SecurityBlobLength; | |
2730 | ||
2731 | SecurityBlob->WorkstationName.Buffer = 0; | |
2732 | SecurityBlob->WorkstationName.Length = 0; | |
2733 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2734 | ||
12b3b8ff SF |
2735 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2736 | along with username on auth request (ie the response to challenge) */ | |
2737 | SecurityBlob->DomainName.Buffer = 0; | |
2738 | SecurityBlob->DomainName.Length = 0; | |
2739 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2740 | if (ses->capabilities & CAP_UNICODE) { |
2741 | if ((long) bcc_ptr % 2) { | |
2742 | *bcc_ptr = 0; | |
2743 | bcc_ptr++; | |
2744 | } | |
2745 | ||
2746 | bytes_returned = | |
e89dc920 | 2747 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2748 | 32, nls_codepage); |
2749 | bcc_ptr += 2 * bytes_returned; | |
2750 | bytes_returned = | |
e9ff3990 | 2751 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2752 | nls_codepage); |
2753 | bcc_ptr += 2 * bytes_returned; | |
2754 | bcc_ptr += 2; /* null terminate Linux version */ | |
2755 | bytes_returned = | |
e89dc920 | 2756 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2757 | 64, nls_codepage); |
2758 | bcc_ptr += 2 * bytes_returned; | |
2759 | *(bcc_ptr + 1) = 0; | |
2760 | *(bcc_ptr + 2) = 0; | |
2761 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2762 | *(bcc_ptr + 1) = 0; | |
2763 | *(bcc_ptr + 2) = 0; | |
2764 | bcc_ptr += 2; /* null domain */ | |
2765 | } else { /* ASCII */ | |
2766 | strcpy(bcc_ptr, "Linux version "); | |
2767 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2768 | strcpy(bcc_ptr, utsname()->release); |
2769 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2770 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2771 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2772 | bcc_ptr++; /* empty domain field */ | |
2773 | *bcc_ptr = 0; | |
2774 | } | |
2775 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2776 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2777 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2778 | smb_buffer->smb_buf_length += count; | |
2779 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2780 | ||
2781 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2782 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2783 | |
2784 | if (smb_buffer_response->Status.CifsError == | |
2785 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2786 | rc = 0; | |
2787 | ||
2788 | if (rc) { | |
2789 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2790 | } else if ((smb_buffer_response->WordCount == 3) | |
2791 | || (smb_buffer_response->WordCount == 4)) { | |
2792 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2793 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2794 | ||
2795 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2796 | cFYI(1, (" Guest login")); |
2797 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
1da177e4 | 2798 | |
50c2f753 SF |
2799 | bcc_ptr = pByteArea(smb_buffer_response); |
2800 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
2801 | |
2802 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2803 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2804 | cFYI(1, | |
2805 | ("Unexpected NTLMSSP message type received %d", | |
2806 | SecurityBlob2->MessageType)); | |
2807 | } else if (ses) { | |
50c2f753 | 2808 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ |
12b3b8ff | 2809 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2810 | if ((pSMBr->resp.hdr.WordCount == 3) |
2811 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2812 | && (blob_len < | |
2813 | pSMBr->resp.ByteCount))) { | |
2814 | ||
2815 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2816 | bcc_ptr += blob_len; | |
12b3b8ff | 2817 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2818 | blob_len)); |
2819 | } | |
2820 | ||
12b3b8ff | 2821 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2822 | |
2823 | memcpy(ses->server->cryptKey, | |
2824 | SecurityBlob2->Challenge, | |
2825 | CIFS_CRYPTO_KEY_SIZE); | |
50c2f753 | 2826 | if (SecurityBlob2->NegotiateFlags & |
12b3b8ff | 2827 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) |
4b18f2a9 | 2828 | *pNTLMv2_flag = true; |
1da177e4 | 2829 | |
50c2f753 SF |
2830 | if ((SecurityBlob2->NegotiateFlags & |
2831 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
1da177e4 | 2832 | || (sign_CIFS_PDUs > 1)) |
50c2f753 SF |
2833 | ses->server->secMode |= |
2834 | SECMODE_SIGN_REQUIRED; | |
2835 | if ((SecurityBlob2->NegotiateFlags & | |
1da177e4 | 2836 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) |
50c2f753 | 2837 | ses->server->secMode |= |
1da177e4 LT |
2838 | SECMODE_SIGN_ENABLED; |
2839 | ||
2840 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2841 | if ((long) (bcc_ptr) % 2) { | |
2842 | remaining_words = | |
2843 | (BCC(smb_buffer_response) | |
2844 | - 1) / 2; | |
50c2f753 SF |
2845 | /* Must word align unicode strings */ |
2846 | bcc_ptr++; | |
1da177e4 LT |
2847 | } else { |
2848 | remaining_words = | |
2849 | BCC | |
2850 | (smb_buffer_response) / 2; | |
2851 | } | |
2852 | len = | |
2853 | UniStrnlen((wchar_t *) bcc_ptr, | |
2854 | remaining_words - 1); | |
2855 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2856 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2857 | terminating last Unicode string in response */ | |
fb8c4b14 | 2858 | if (ses->serverOS) |
a424f8bf | 2859 | kfree(ses->serverOS); |
1da177e4 | 2860 | ses->serverOS = |
e915fc49 | 2861 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2862 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2863 | (__le16 *) |
1da177e4 LT |
2864 | bcc_ptr, len, |
2865 | nls_codepage); | |
2866 | bcc_ptr += 2 * (len + 1); | |
2867 | remaining_words -= len + 1; | |
2868 | ses->serverOS[2 * len] = 0; | |
2869 | ses->serverOS[1 + (2 * len)] = 0; | |
2870 | if (remaining_words > 0) { | |
2871 | len = UniStrnlen((wchar_t *) | |
2872 | bcc_ptr, | |
2873 | remaining_words | |
2874 | - 1); | |
cd49b492 | 2875 | kfree(ses->serverNOS); |
1da177e4 | 2876 | ses->serverNOS = |
e915fc49 | 2877 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2878 | GFP_KERNEL); |
2879 | cifs_strfromUCS_le(ses-> | |
2880 | serverNOS, | |
e89dc920 | 2881 | (__le16 *) |
1da177e4 LT |
2882 | bcc_ptr, |
2883 | len, | |
2884 | nls_codepage); | |
2885 | bcc_ptr += 2 * (len + 1); | |
2886 | ses->serverNOS[2 * len] = 0; | |
2887 | ses->serverNOS[1 + | |
2888 | (2 * len)] = 0; | |
2889 | remaining_words -= len + 1; | |
2890 | if (remaining_words > 0) { | |
50c2f753 SF |
2891 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
2892 | /* last string not always null terminated | |
2893 | (for e.g. for Windows XP & 2000) */ | |
cd49b492 | 2894 | kfree(ses->serverDomain); |
1da177e4 | 2895 | ses->serverDomain = |
e915fc49 | 2896 | kzalloc(2 * |
1da177e4 LT |
2897 | (len + |
2898 | 1), | |
2899 | GFP_KERNEL); | |
2900 | cifs_strfromUCS_le | |
e89dc920 SF |
2901 | (ses->serverDomain, |
2902 | (__le16 *)bcc_ptr, | |
2903 | len, nls_codepage); | |
1da177e4 LT |
2904 | bcc_ptr += |
2905 | 2 * (len + 1); | |
e89dc920 | 2906 | ses->serverDomain[2*len] |
1da177e4 | 2907 | = 0; |
e89dc920 SF |
2908 | ses->serverDomain |
2909 | [1 + (2 * len)] | |
1da177e4 LT |
2910 | = 0; |
2911 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 2912 | else { |
cd49b492 | 2913 | kfree(ses->serverDomain); |
1da177e4 | 2914 | ses->serverDomain = |
e915fc49 | 2915 | kzalloc(2, |
1da177e4 | 2916 | GFP_KERNEL); |
a424f8bf | 2917 | } |
1da177e4 | 2918 | } else { /* no room so create dummy domain and NOS string */ |
cd49b492 | 2919 | kfree(ses->serverDomain); |
1da177e4 | 2920 | ses->serverDomain = |
e915fc49 | 2921 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2922 | kfree(ses->serverNOS); |
1da177e4 | 2923 | ses->serverNOS = |
e915fc49 | 2924 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2925 | } |
2926 | } else { /* ASCII */ | |
2927 | len = strnlen(bcc_ptr, 1024); | |
2928 | if (((long) bcc_ptr + len) - (long) | |
2929 | pByteArea(smb_buffer_response) | |
2930 | <= BCC(smb_buffer_response)) { | |
fb8c4b14 | 2931 | if (ses->serverOS) |
a424f8bf | 2932 | kfree(ses->serverOS); |
1da177e4 | 2933 | ses->serverOS = |
e915fc49 | 2934 | kzalloc(len + 1, |
1da177e4 LT |
2935 | GFP_KERNEL); |
2936 | strncpy(ses->serverOS, | |
2937 | bcc_ptr, len); | |
2938 | ||
2939 | bcc_ptr += len; | |
2940 | bcc_ptr[0] = 0; /* null terminate string */ | |
2941 | bcc_ptr++; | |
2942 | ||
2943 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2944 | kfree(ses->serverNOS); |
1da177e4 | 2945 | ses->serverNOS = |
e915fc49 | 2946 | kzalloc(len + 1, |
1da177e4 LT |
2947 | GFP_KERNEL); |
2948 | strncpy(ses->serverNOS, bcc_ptr, len); | |
2949 | bcc_ptr += len; | |
2950 | bcc_ptr[0] = 0; | |
2951 | bcc_ptr++; | |
2952 | ||
2953 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2954 | kfree(ses->serverDomain); |
1da177e4 | 2955 | ses->serverDomain = |
e915fc49 | 2956 | kzalloc(len + 1, |
1da177e4 | 2957 | GFP_KERNEL); |
50c2f753 SF |
2958 | strncpy(ses->serverDomain, |
2959 | bcc_ptr, len); | |
1da177e4 LT |
2960 | bcc_ptr += len; |
2961 | bcc_ptr[0] = 0; | |
2962 | bcc_ptr++; | |
2963 | } else | |
2964 | cFYI(1, | |
63135e08 SF |
2965 | ("field of length %d " |
2966 | "extends beyond end of smb", | |
1da177e4 LT |
2967 | len)); |
2968 | } | |
2969 | } else { | |
50c2f753 SF |
2970 | cERROR(1, ("Security Blob Length extends beyond" |
2971 | " end of SMB")); | |
1da177e4 LT |
2972 | } |
2973 | } else { | |
2974 | cERROR(1, ("No session structure passed in.")); | |
2975 | } | |
2976 | } else { | |
2977 | cERROR(1, | |
5815449d | 2978 | (" Invalid Word count %d:", |
1da177e4 LT |
2979 | smb_buffer_response->WordCount)); |
2980 | rc = -EIO; | |
2981 | } | |
2982 | ||
a8a11d39 | 2983 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2984 | |
2985 | return rc; | |
2986 | } | |
2987 | static int | |
2988 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
4b18f2a9 | 2989 | char *ntlm_session_key, bool ntlmv2_flag, |
6345a3a8 | 2990 | const struct nls_table *nls_codepage) |
1da177e4 LT |
2991 | { |
2992 | struct smb_hdr *smb_buffer; | |
2993 | struct smb_hdr *smb_buffer_response; | |
2994 | SESSION_SETUP_ANDX *pSMB; | |
2995 | SESSION_SETUP_ANDX *pSMBr; | |
2996 | char *bcc_ptr; | |
2997 | char *user; | |
2998 | char *domain; | |
2999 | int rc = 0; | |
3000 | int remaining_words = 0; | |
3001 | int bytes_returned = 0; | |
3002 | int len; | |
6345a3a8 | 3003 | int SecurityBlobLength = sizeof(AUTHENTICATE_MESSAGE); |
1da177e4 LT |
3004 | PAUTHENTICATE_MESSAGE SecurityBlob; |
3005 | __u32 negotiate_flags, capabilities; | |
3006 | __u16 count; | |
3007 | ||
3008 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
fb8c4b14 | 3009 | if (ses == NULL) |
1da177e4 LT |
3010 | return -EINVAL; |
3011 | user = ses->userName; | |
3012 | domain = ses->domainName; | |
3013 | smb_buffer = cifs_buf_get(); | |
3014 | if (smb_buffer == NULL) { | |
3015 | return -ENOMEM; | |
3016 | } | |
3017 | smb_buffer_response = smb_buffer; | |
6345a3a8 CG |
3018 | pSMB = (SESSION_SETUP_ANDX *)smb_buffer; |
3019 | pSMBr = (SESSION_SETUP_ANDX *)smb_buffer_response; | |
1da177e4 LT |
3020 | |
3021 | /* send SMBsessionSetup here */ | |
3022 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
3023 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
3024 | |
3025 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3026 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
3027 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
3028 | pSMB->req.AndXCommand = 0xFF; | |
3029 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
3030 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
3031 | ||
3032 | pSMB->req.hdr.Uid = ses->Suid; | |
3033 | ||
fb8c4b14 | 3034 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3035 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3036 | ||
3037 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
6345a3a8 | 3038 | CAP_EXTENDED_SECURITY; |
1da177e4 LT |
3039 | if (ses->capabilities & CAP_UNICODE) { |
3040 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3041 | capabilities |= CAP_UNICODE; | |
3042 | } | |
3043 | if (ses->capabilities & CAP_STATUS32) { | |
3044 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3045 | capabilities |= CAP_STATUS32; | |
3046 | } | |
3047 | if (ses->capabilities & CAP_DFS) { | |
3048 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3049 | capabilities |= CAP_DFS; | |
3050 | } | |
3051 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
3052 | ||
6345a3a8 CG |
3053 | bcc_ptr = (char *)&pSMB->req.SecurityBlob; |
3054 | SecurityBlob = (PAUTHENTICATE_MESSAGE)bcc_ptr; | |
1da177e4 LT |
3055 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); |
3056 | SecurityBlob->MessageType = NtLmAuthenticate; | |
3057 | bcc_ptr += SecurityBlobLength; | |
6345a3a8 CG |
3058 | negotiate_flags = NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | |
3059 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
3060 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
fb8c4b14 | 3061 | if (sign_CIFS_PDUs) |
1da177e4 | 3062 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 3063 | if (ntlmv2_flag) |
1da177e4 LT |
3064 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; |
3065 | ||
3066 | /* setup pointers to domain name and workstation name */ | |
3067 | ||
3068 | SecurityBlob->WorkstationName.Buffer = 0; | |
3069 | SecurityBlob->WorkstationName.Length = 0; | |
3070 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
3071 | SecurityBlob->SessionKey.Length = 0; | |
3072 | SecurityBlob->SessionKey.MaximumLength = 0; | |
3073 | SecurityBlob->SessionKey.Buffer = 0; | |
3074 | ||
3075 | SecurityBlob->LmChallengeResponse.Length = 0; | |
3076 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
3077 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
3078 | ||
3079 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 3080 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 3081 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
3082 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
3083 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
3084 | SecurityBlob->NtChallengeResponse.Buffer = |
3085 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
3086 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
3087 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
3088 | |
3089 | if (ses->capabilities & CAP_UNICODE) { | |
3090 | if (domain == NULL) { | |
3091 | SecurityBlob->DomainName.Buffer = 0; | |
3092 | SecurityBlob->DomainName.Length = 0; | |
3093 | SecurityBlob->DomainName.MaximumLength = 0; | |
3094 | } else { | |
77159b4d | 3095 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 | 3096 | nls_codepage); |
77159b4d | 3097 | ln *= 2; |
1da177e4 | 3098 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3099 | cpu_to_le16(ln); |
1da177e4 LT |
3100 | SecurityBlob->DomainName.Buffer = |
3101 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3102 | bcc_ptr += ln; |
3103 | SecurityBlobLength += ln; | |
3104 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3105 | } |
3106 | if (user == NULL) { | |
3107 | SecurityBlob->UserName.Buffer = 0; | |
3108 | SecurityBlob->UserName.Length = 0; | |
3109 | SecurityBlob->UserName.MaximumLength = 0; | |
3110 | } else { | |
77159b4d | 3111 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 | 3112 | nls_codepage); |
77159b4d | 3113 | ln *= 2; |
1da177e4 | 3114 | SecurityBlob->UserName.MaximumLength = |
77159b4d | 3115 | cpu_to_le16(ln); |
1da177e4 LT |
3116 | SecurityBlob->UserName.Buffer = |
3117 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3118 | bcc_ptr += ln; |
3119 | SecurityBlobLength += ln; | |
3120 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3121 | } |
3122 | ||
63135e08 SF |
3123 | /* SecurityBlob->WorkstationName.Length = |
3124 | cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); | |
1da177e4 | 3125 | SecurityBlob->WorkstationName.Length *= 2; |
63135e08 SF |
3126 | SecurityBlob->WorkstationName.MaximumLength = |
3127 | cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
3128 | SecurityBlob->WorkstationName.Buffer = | |
3129 | cpu_to_le32(SecurityBlobLength); | |
1da177e4 LT |
3130 | bcc_ptr += SecurityBlob->WorkstationName.Length; |
3131 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
63135e08 SF |
3132 | SecurityBlob->WorkstationName.Length = |
3133 | cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
1da177e4 LT |
3134 | |
3135 | if ((long) bcc_ptr % 2) { | |
3136 | *bcc_ptr = 0; | |
3137 | bcc_ptr++; | |
3138 | } | |
3139 | bytes_returned = | |
e89dc920 | 3140 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
3141 | 32, nls_codepage); |
3142 | bcc_ptr += 2 * bytes_returned; | |
3143 | bytes_returned = | |
e9ff3990 | 3144 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
3145 | nls_codepage); |
3146 | bcc_ptr += 2 * bytes_returned; | |
3147 | bcc_ptr += 2; /* null term version string */ | |
3148 | bytes_returned = | |
e89dc920 | 3149 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
3150 | 64, nls_codepage); |
3151 | bcc_ptr += 2 * bytes_returned; | |
3152 | *(bcc_ptr + 1) = 0; | |
3153 | *(bcc_ptr + 2) = 0; | |
3154 | bcc_ptr += 2; /* null terminate network opsys string */ | |
3155 | *(bcc_ptr + 1) = 0; | |
3156 | *(bcc_ptr + 2) = 0; | |
3157 | bcc_ptr += 2; /* null domain */ | |
3158 | } else { /* ASCII */ | |
3159 | if (domain == NULL) { | |
3160 | SecurityBlob->DomainName.Buffer = 0; | |
3161 | SecurityBlob->DomainName.Length = 0; | |
3162 | SecurityBlob->DomainName.MaximumLength = 0; | |
3163 | } else { | |
77159b4d | 3164 | __u16 ln; |
1da177e4 LT |
3165 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; |
3166 | strncpy(bcc_ptr, domain, 63); | |
77159b4d | 3167 | ln = strnlen(domain, 64); |
1da177e4 | 3168 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3169 | cpu_to_le16(ln); |
1da177e4 LT |
3170 | SecurityBlob->DomainName.Buffer = |
3171 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3172 | bcc_ptr += ln; |
3173 | SecurityBlobLength += ln; | |
3174 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3175 | } |
3176 | if (user == NULL) { | |
3177 | SecurityBlob->UserName.Buffer = 0; | |
3178 | SecurityBlob->UserName.Length = 0; | |
3179 | SecurityBlob->UserName.MaximumLength = 0; | |
3180 | } else { | |
77159b4d | 3181 | __u16 ln; |
1da177e4 | 3182 | strncpy(bcc_ptr, user, 63); |
77159b4d SF |
3183 | ln = strnlen(user, 64); |
3184 | SecurityBlob->UserName.MaximumLength = cpu_to_le16(ln); | |
1da177e4 | 3185 | SecurityBlob->UserName.Buffer = |
77159b4d SF |
3186 | cpu_to_le32(SecurityBlobLength); |
3187 | bcc_ptr += ln; | |
3188 | SecurityBlobLength += ln; | |
3189 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3190 | } |
3191 | /* BB fill in our workstation name if known BB */ | |
3192 | ||
3193 | strcpy(bcc_ptr, "Linux version "); | |
3194 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
3195 | strcpy(bcc_ptr, utsname()->release); |
3196 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
3197 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
3198 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
3199 | bcc_ptr++; /* null domain */ | |
3200 | *bcc_ptr = 0; | |
3201 | } | |
3202 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
3203 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
3204 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
3205 | smb_buffer->smb_buf_length += count; | |
3206 | pSMB->req.ByteCount = cpu_to_le16(count); | |
3207 | ||
3208 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 3209 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 | 3210 | if (rc) { |
6345a3a8 CG |
3211 | /* rc = map_smb_to_linux_error(smb_buffer_response) done in SendReceive now */ |
3212 | } else if ((smb_buffer_response->WordCount == 3) || | |
3213 | (smb_buffer_response->WordCount == 4)) { | |
1da177e4 | 3214 | __u16 action = le16_to_cpu(pSMBr->resp.Action); |
6345a3a8 | 3215 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); |
1da177e4 | 3216 | if (action & GUEST_LOGIN) |
50c2f753 SF |
3217 | cFYI(1, (" Guest login")); /* BB Should we set anything |
3218 | in SesInfo struct ? */ | |
3219 | /* if (SecurityBlob2->MessageType != NtLm??) { | |
3220 | cFYI("Unexpected message type on auth response is %d")); | |
3221 | } */ | |
3222 | ||
1da177e4 LT |
3223 | if (ses) { |
3224 | cFYI(1, | |
50c2f753 | 3225 | ("Check challenge UID %d vs auth response UID %d", |
1da177e4 | 3226 | ses->Suid, smb_buffer_response->Uid)); |
50c2f753 SF |
3227 | /* UID left in wire format */ |
3228 | ses->Suid = smb_buffer_response->Uid; | |
3229 | bcc_ptr = pByteArea(smb_buffer_response); | |
3230 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
3231 | if ((pSMBr->resp.hdr.WordCount == 3) |
3232 | || ((pSMBr->resp.hdr.WordCount == 4) | |
3233 | && (blob_len < | |
3234 | pSMBr->resp.ByteCount))) { | |
3235 | if (pSMBr->resp.hdr.WordCount == 4) { | |
3236 | bcc_ptr += | |
3237 | blob_len; | |
3238 | cFYI(1, | |
3239 | ("Security Blob Length %d ", | |
3240 | blob_len)); | |
3241 | } | |
3242 | ||
3243 | cFYI(1, | |
3244 | ("NTLMSSP response to Authenticate ")); | |
3245 | ||
3246 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3247 | if ((long) (bcc_ptr) % 2) { | |
3248 | remaining_words = | |
3249 | (BCC(smb_buffer_response) | |
3250 | - 1) / 2; | |
3251 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
3252 | } else { | |
3253 | remaining_words = BCC(smb_buffer_response) / 2; | |
3254 | } | |
77159b4d SF |
3255 | len = UniStrnlen((wchar_t *) bcc_ptr, |
3256 | remaining_words - 1); | |
1da177e4 LT |
3257 | /* We look for obvious messed up bcc or strings in response so we do not go off |
3258 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
3259 | terminating last Unicode string in response */ | |
fb8c4b14 | 3260 | if (ses->serverOS) |
08775834 | 3261 | kfree(ses->serverOS); |
1da177e4 | 3262 | ses->serverOS = |
e915fc49 | 3263 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 3264 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 3265 | (__le16 *) |
1da177e4 LT |
3266 | bcc_ptr, len, |
3267 | nls_codepage); | |
3268 | bcc_ptr += 2 * (len + 1); | |
3269 | remaining_words -= len + 1; | |
3270 | ses->serverOS[2 * len] = 0; | |
3271 | ses->serverOS[1 + (2 * len)] = 0; | |
3272 | if (remaining_words > 0) { | |
3273 | len = UniStrnlen((wchar_t *) | |
3274 | bcc_ptr, | |
3275 | remaining_words | |
3276 | - 1); | |
cd49b492 | 3277 | kfree(ses->serverNOS); |
1da177e4 | 3278 | ses->serverNOS = |
e915fc49 | 3279 | kzalloc(2 * (len + 1), |
1da177e4 LT |
3280 | GFP_KERNEL); |
3281 | cifs_strfromUCS_le(ses-> | |
3282 | serverNOS, | |
e89dc920 | 3283 | (__le16 *) |
1da177e4 LT |
3284 | bcc_ptr, |
3285 | len, | |
3286 | nls_codepage); | |
3287 | bcc_ptr += 2 * (len + 1); | |
3288 | ses->serverNOS[2 * len] = 0; | |
3289 | ses->serverNOS[1+(2*len)] = 0; | |
3290 | remaining_words -= len + 1; | |
3291 | if (remaining_words > 0) { | |
50c2f753 | 3292 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 3293 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ |
fb8c4b14 | 3294 | if (ses->serverDomain) |
a424f8bf | 3295 | kfree(ses->serverDomain); |
1da177e4 | 3296 | ses->serverDomain = |
e915fc49 | 3297 | kzalloc(2 * |
1da177e4 LT |
3298 | (len + |
3299 | 1), | |
3300 | GFP_KERNEL); | |
3301 | cifs_strfromUCS_le | |
3302 | (ses-> | |
3303 | serverDomain, | |
e89dc920 | 3304 | (__le16 *) |
1da177e4 LT |
3305 | bcc_ptr, len, |
3306 | nls_codepage); | |
3307 | bcc_ptr += | |
3308 | 2 * (len + 1); | |
3309 | ses-> | |
3310 | serverDomain[2 | |
3311 | * len] | |
3312 | = 0; | |
3313 | ses-> | |
3314 | serverDomain[1 | |
3315 | + | |
3316 | (2 | |
3317 | * | |
3318 | len)] | |
3319 | = 0; | |
3320 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 3321 | else { |
fb8c4b14 | 3322 | if (ses->serverDomain) |
a424f8bf | 3323 | kfree(ses->serverDomain); |
e915fc49 | 3324 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 3325 | } |
1da177e4 | 3326 | } else { /* no room so create dummy domain and NOS string */ |
fb8c4b14 | 3327 | if (ses->serverDomain) |
a424f8bf | 3328 | kfree(ses->serverDomain); |
e915fc49 | 3329 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 3330 | kfree(ses->serverNOS); |
e915fc49 | 3331 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3332 | } |
3333 | } else { /* ASCII */ | |
3334 | len = strnlen(bcc_ptr, 1024); | |
50c2f753 SF |
3335 | if (((long) bcc_ptr + len) - |
3336 | (long) pByteArea(smb_buffer_response) | |
63135e08 | 3337 | <= BCC(smb_buffer_response)) { |
fb8c4b14 | 3338 | if (ses->serverOS) |
a424f8bf | 3339 | kfree(ses->serverOS); |
77159b4d | 3340 | ses->serverOS = kzalloc(len + 1, GFP_KERNEL); |
1da177e4 LT |
3341 | strncpy(ses->serverOS,bcc_ptr, len); |
3342 | ||
3343 | bcc_ptr += len; | |
3344 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3345 | bcc_ptr++; | |
3346 | ||
3347 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3348 | kfree(ses->serverNOS); |
50c2f753 SF |
3349 | ses->serverNOS = kzalloc(len+1, |
3350 | GFP_KERNEL); | |
63135e08 SF |
3351 | strncpy(ses->serverNOS, |
3352 | bcc_ptr, len); | |
1da177e4 LT |
3353 | bcc_ptr += len; |
3354 | bcc_ptr[0] = 0; | |
3355 | bcc_ptr++; | |
3356 | ||
3357 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 3358 | if (ses->serverDomain) |
a424f8bf | 3359 | kfree(ses->serverDomain); |
63135e08 SF |
3360 | ses->serverDomain = |
3361 | kzalloc(len+1, | |
3362 | GFP_KERNEL); | |
3363 | strncpy(ses->serverDomain, | |
3364 | bcc_ptr, len); | |
1da177e4 LT |
3365 | bcc_ptr += len; |
3366 | bcc_ptr[0] = 0; | |
3367 | bcc_ptr++; | |
3368 | } else | |
6345a3a8 | 3369 | cFYI(1, ("field of length %d " |
63135e08 | 3370 | "extends beyond end of smb ", |
1da177e4 LT |
3371 | len)); |
3372 | } | |
3373 | } else { | |
6345a3a8 | 3374 | cERROR(1, ("Security Blob extends beyond end " |
63135e08 | 3375 | "of SMB")); |
1da177e4 LT |
3376 | } |
3377 | } else { | |
3378 | cERROR(1, ("No session structure passed in.")); | |
3379 | } | |
3380 | } else { | |
6345a3a8 | 3381 | cERROR(1, ("Invalid Word count %d: ", |
1da177e4 LT |
3382 | smb_buffer_response->WordCount)); |
3383 | rc = -EIO; | |
3384 | } | |
3385 | ||
a8a11d39 | 3386 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3387 | |
3388 | return rc; | |
3389 | } | |
3390 | ||
3391 | int | |
3392 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3393 | const char *tree, struct cifsTconInfo *tcon, | |
3394 | const struct nls_table *nls_codepage) | |
3395 | { | |
3396 | struct smb_hdr *smb_buffer; | |
3397 | struct smb_hdr *smb_buffer_response; | |
3398 | TCONX_REQ *pSMB; | |
3399 | TCONX_RSP *pSMBr; | |
3400 | unsigned char *bcc_ptr; | |
3401 | int rc = 0; | |
3402 | int length; | |
3403 | __u16 count; | |
3404 | ||
3405 | if (ses == NULL) | |
3406 | return -EIO; | |
3407 | ||
3408 | smb_buffer = cifs_buf_get(); | |
3409 | if (smb_buffer == NULL) { | |
3410 | return -ENOMEM; | |
3411 | } | |
3412 | smb_buffer_response = smb_buffer; | |
3413 | ||
3414 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3415 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3416 | |
3417 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3418 | smb_buffer->Uid = ses->Suid; |
3419 | pSMB = (TCONX_REQ *) smb_buffer; | |
3420 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3421 | ||
3422 | pSMB->AndXCommand = 0xFF; | |
3423 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3424 | bcc_ptr = &pSMB->Password[0]; |
fb8c4b14 | 3425 | if ((ses->server->secMode) & SECMODE_USER) { |
eeac8047 | 3426 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
7c7b25bc | 3427 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3428 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3429 | /* already aligned so no need to do it below */ |
eeac8047 | 3430 | } else { |
7c7b25bc | 3431 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3432 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3433 | specified as required (when that support is added to | |
3434 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3435 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3436 | by Samba (not sure whether other servers allow |
3437 | NTLMv2 password here) */ | |
7c7b25bc | 3438 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
50c2f753 | 3439 | if ((extended_security & CIFSSEC_MAY_LANMAN) && |
7c7b25bc SF |
3440 | (ses->server->secType == LANMAN)) |
3441 | calc_lanman_hash(ses, bcc_ptr); | |
3442 | else | |
3443 | #endif /* CIFS_WEAK_PW_HASH */ | |
eeac8047 SF |
3444 | SMBNTencrypt(ses->password, |
3445 | ses->server->cryptKey, | |
3446 | bcc_ptr); | |
3447 | ||
7c7b25bc | 3448 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
fb8c4b14 | 3449 | if (ses->capabilities & CAP_UNICODE) { |
7c7b25bc SF |
3450 | /* must align unicode strings */ |
3451 | *bcc_ptr = 0; /* null byte password */ | |
3452 | bcc_ptr++; | |
3453 | } | |
eeac8047 | 3454 | } |
1da177e4 | 3455 | |
50c2f753 | 3456 | if (ses->server->secMode & |
a878fb22 | 3457 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3458 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3459 | ||
3460 | if (ses->capabilities & CAP_STATUS32) { | |
3461 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3462 | } | |
3463 | if (ses->capabilities & CAP_DFS) { | |
3464 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3465 | } | |
3466 | if (ses->capabilities & CAP_UNICODE) { | |
3467 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3468 | length = | |
50c2f753 SF |
3469 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3470 | 6 /* max utf8 char length in bytes */ * | |
a878fb22 SF |
3471 | (/* server len*/ + 256 /* share len */), nls_codepage); |
3472 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3473 | bcc_ptr += 2; /* skip trailing null */ |
3474 | } else { /* ASCII */ | |
1da177e4 LT |
3475 | strcpy(bcc_ptr, tree); |
3476 | bcc_ptr += strlen(tree) + 1; | |
3477 | } | |
3478 | strcpy(bcc_ptr, "?????"); | |
3479 | bcc_ptr += strlen("?????"); | |
3480 | bcc_ptr += 1; | |
3481 | count = bcc_ptr - &pSMB->Password[0]; | |
3482 | pSMB->hdr.smb_buf_length += count; | |
3483 | pSMB->ByteCount = cpu_to_le16(count); | |
3484 | ||
133672ef SF |
3485 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, |
3486 | CIFS_STD_OP); | |
1da177e4 LT |
3487 | |
3488 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3489 | /* above now done in SendReceive */ | |
3490 | if ((rc == 0) && (tcon != NULL)) { | |
3491 | tcon->tidStatus = CifsGood; | |
3492 | tcon->tid = smb_buffer_response->Tid; | |
3493 | bcc_ptr = pByteArea(smb_buffer_response); | |
3494 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
50c2f753 | 3495 | /* skip service field (NB: this field is always ASCII) */ |
7f8ed420 SF |
3496 | if (length == 3) { |
3497 | if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') && | |
3498 | (bcc_ptr[2] == 'C')) { | |
3499 | cFYI(1, ("IPC connection")); | |
3500 | tcon->ipc = 1; | |
3501 | } | |
3502 | } else if (length == 2) { | |
3503 | if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) { | |
3504 | /* the most common case */ | |
3505 | cFYI(1, ("disk share connection")); | |
3506 | } | |
3507 | } | |
50c2f753 | 3508 | bcc_ptr += length + 1; |
1da177e4 LT |
3509 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
3510 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3511 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3512 | if ((bcc_ptr + (2 * length)) - | |
3513 | pByteArea(smb_buffer_response) <= | |
3514 | BCC(smb_buffer_response)) { | |
f99d49ad | 3515 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3516 | tcon->nativeFileSystem = |
e915fc49 | 3517 | kzalloc(length + 2, GFP_KERNEL); |
88f370a6 SF |
3518 | if (tcon->nativeFileSystem) |
3519 | cifs_strfromUCS_le( | |
3520 | tcon->nativeFileSystem, | |
3521 | (__le16 *) bcc_ptr, | |
3522 | length, nls_codepage); | |
1da177e4 LT |
3523 | bcc_ptr += 2 * length; |
3524 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3525 | bcc_ptr[1] = 0; | |
3526 | bcc_ptr += 2; | |
3527 | } | |
50c2f753 | 3528 | /* else do not bother copying these information fields*/ |
1da177e4 LT |
3529 | } else { |
3530 | length = strnlen(bcc_ptr, 1024); | |
3531 | if ((bcc_ptr + length) - | |
3532 | pByteArea(smb_buffer_response) <= | |
3533 | BCC(smb_buffer_response)) { | |
f99d49ad | 3534 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3535 | tcon->nativeFileSystem = |
e915fc49 | 3536 | kzalloc(length + 1, GFP_KERNEL); |
88f370a6 SF |
3537 | if (tcon->nativeFileSystem) |
3538 | strncpy(tcon->nativeFileSystem, bcc_ptr, | |
3539 | length); | |
1da177e4 | 3540 | } |
50c2f753 | 3541 | /* else do not bother copying these information fields*/ |
1da177e4 | 3542 | } |
fb8c4b14 | 3543 | if ((smb_buffer_response->WordCount == 3) || |
1a4e15a0 SF |
3544 | (smb_buffer_response->WordCount == 7)) |
3545 | /* field is in same location */ | |
3979877e SF |
3546 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
3547 | else | |
3548 | tcon->Flags = 0; | |
1da177e4 LT |
3549 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3550 | } else if ((rc == 0) && tcon == NULL) { | |
50c2f753 | 3551 | /* all we need to save for IPC$ connection */ |
1da177e4 LT |
3552 | ses->ipc_tid = smb_buffer_response->Tid; |
3553 | } | |
3554 | ||
a8a11d39 | 3555 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3556 | return rc; |
3557 | } | |
3558 | ||
3559 | int | |
3560 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3561 | { | |
3562 | int rc = 0; | |
3563 | int xid; | |
3564 | struct cifsSesInfo *ses = NULL; | |
50c2f753 | 3565 | char *tmp; |
1da177e4 LT |
3566 | |
3567 | xid = GetXid(); | |
3568 | ||
3569 | if (cifs_sb->tcon) { | |
3570 | ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ | |
3571 | rc = CIFSSMBTDis(xid, cifs_sb->tcon); | |
3572 | if (rc == -EBUSY) { | |
3573 | FreeXid(xid); | |
3574 | return 0; | |
3575 | } | |
5d941ca6 | 3576 | DeleteTconOplockQEntries(cifs_sb->tcon); |
1da177e4 LT |
3577 | tconInfoFree(cifs_sb->tcon); |
3578 | if ((ses) && (ses->server)) { | |
3579 | /* save off task so we do not refer to ses later */ | |
1da177e4 LT |
3580 | cFYI(1, ("About to do SMBLogoff ")); |
3581 | rc = CIFSSMBLogoff(xid, ses); | |
3582 | if (rc == -EBUSY) { | |
3583 | FreeXid(xid); | |
3584 | return 0; | |
3585 | } else if (rc == -ESHUTDOWN) { | |
467a8f8d | 3586 | cFYI(1, ("Waking up socket by sending signal")); |
b1c8d2b4 JL |
3587 | if (ses->server) |
3588 | kill_cifsd(ses->server); | |
1da177e4 LT |
3589 | rc = 0; |
3590 | } /* else - we have an smb session | |
3591 | left on this socket do not kill cifsd */ | |
3592 | } else | |
3593 | cFYI(1, ("No session or bad tcon")); | |
3594 | } | |
50c2f753 | 3595 | |
1da177e4 | 3596 | cifs_sb->tcon = NULL; |
2fe87f02 SF |
3597 | tmp = cifs_sb->prepath; |
3598 | cifs_sb->prepathlen = 0; | |
3599 | cifs_sb->prepath = NULL; | |
3600 | kfree(tmp); | |
1da177e4 LT |
3601 | if (ses) |
3602 | sesInfoFree(ses); | |
3603 | ||
3604 | FreeXid(xid); | |
88e7d705 | 3605 | return rc; |
50c2f753 | 3606 | } |
1da177e4 LT |
3607 | |
3608 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
50c2f753 | 3609 | struct nls_table *nls_info) |
1da177e4 LT |
3610 | { |
3611 | int rc = 0; | |
7c7b25bc | 3612 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
4b18f2a9 | 3613 | bool ntlmv2_flag = false; |
ad009ac9 | 3614 | int first_time = 0; |
cb7691b6 | 3615 | struct TCP_Server_Info *server = pSesInfo->server; |
1da177e4 LT |
3616 | |
3617 | /* what if server changes its buffer size after dropping the session? */ | |
cb7691b6 | 3618 | if (server->maxBuf == 0) /* no need to send on reconnect */ { |
1da177e4 | 3619 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
cb7691b6 JL |
3620 | if (rc == -EAGAIN) { |
3621 | /* retry only once on 1st time connection */ | |
1da177e4 | 3622 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
50c2f753 | 3623 | if (rc == -EAGAIN) |
1da177e4 LT |
3624 | rc = -EHOSTDOWN; |
3625 | } | |
fb8c4b14 | 3626 | if (rc == 0) { |
1da177e4 | 3627 | spin_lock(&GlobalMid_Lock); |
cb7691b6 JL |
3628 | if (server->tcpStatus != CifsExiting) |
3629 | server->tcpStatus = CifsGood; | |
1da177e4 LT |
3630 | else |
3631 | rc = -EHOSTDOWN; | |
3632 | spin_unlock(&GlobalMid_Lock); | |
3633 | ||
3634 | } | |
ad009ac9 | 3635 | first_time = 1; |
1da177e4 | 3636 | } |
26b994fa SF |
3637 | |
3638 | if (rc) | |
3639 | goto ss_err_exit; | |
3640 | ||
3641 | pSesInfo->flags = 0; | |
cb7691b6 | 3642 | pSesInfo->capabilities = server->capabilities; |
26b994fa SF |
3643 | if (linuxExtEnabled == 0) |
3644 | pSesInfo->capabilities &= (~CAP_UNIX); | |
ad009ac9 | 3645 | /* pSesInfo->sequence_number = 0;*/ |
26b994fa | 3646 | cFYI(1, ("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", |
cb7691b6 JL |
3647 | server->secMode, server->capabilities, server->timeAdj)); |
3648 | ||
26b994fa SF |
3649 | if (experimEnabled < 2) |
3650 | rc = CIFS_SessSetup(xid, pSesInfo, first_time, nls_info); | |
3651 | else if (extended_security | |
3652 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
cb7691b6 | 3653 | && (server->secType == NTLMSSP)) { |
26b994fa SF |
3654 | rc = -EOPNOTSUPP; |
3655 | } else if (extended_security | |
3656 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
cb7691b6 | 3657 | && (server->secType == RawNTLMSSP)) { |
26b994fa SF |
3658 | cFYI(1, ("NTLMSSP sesssetup")); |
3659 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, pSesInfo, &ntlmv2_flag, | |
3660 | nls_info); | |
3661 | if (!rc) { | |
3662 | if (ntlmv2_flag) { | |
3663 | char *v2_response; | |
3664 | cFYI(1, ("more secure NTLM ver2 hash")); | |
3665 | if (CalcNTLMv2_partial_mac_key(pSesInfo, | |
3666 | nls_info)) { | |
3667 | rc = -ENOMEM; | |
3668 | goto ss_err_exit; | |
3669 | } else | |
3670 | v2_response = kmalloc(16 + 64 /* blob*/, | |
3671 | GFP_KERNEL); | |
3672 | if (v2_response) { | |
3673 | CalcNTLMv2_response(pSesInfo, | |
3674 | v2_response); | |
3675 | /* if (first_time) | |
3676 | cifs_calculate_ntlmv2_mac_key */ | |
3677 | kfree(v2_response); | |
1da177e4 | 3678 | /* BB Put dummy sig in SessSetup PDU? */ |
1da177e4 | 3679 | } else { |
26b994fa SF |
3680 | rc = -ENOMEM; |
3681 | goto ss_err_exit; | |
1da177e4 | 3682 | } |
26b994fa SF |
3683 | |
3684 | } else { | |
3685 | SMBNTencrypt(pSesInfo->password, | |
cb7691b6 | 3686 | server->cryptKey, |
26b994fa SF |
3687 | ntlm_session_key); |
3688 | ||
3689 | if (first_time) | |
3690 | cifs_calculate_mac_key( | |
cb7691b6 | 3691 | &server->mac_signing_key, |
26b994fa SF |
3692 | ntlm_session_key, |
3693 | pSesInfo->password); | |
3694 | } | |
1da177e4 LT |
3695 | /* for better security the weaker lanman hash not sent |
3696 | in AuthSessSetup so we no longer calculate it */ | |
3697 | ||
26b994fa SF |
3698 | rc = CIFSNTLMSSPAuthSessSetup(xid, pSesInfo, |
3699 | ntlm_session_key, | |
3700 | ntlmv2_flag, | |
3701 | nls_info); | |
3702 | } | |
3703 | } else { /* old style NTLM 0.12 session setup */ | |
cb7691b6 | 3704 | SMBNTencrypt(pSesInfo->password, server->cryptKey, |
26b994fa | 3705 | ntlm_session_key); |
1da177e4 | 3706 | |
26b994fa | 3707 | if (first_time) |
cb7691b6 JL |
3708 | cifs_calculate_mac_key(&server->mac_signing_key, |
3709 | ntlm_session_key, | |
3710 | pSesInfo->password); | |
ad009ac9 | 3711 | |
26b994fa SF |
3712 | rc = CIFSSessSetup(xid, pSesInfo, ntlm_session_key, nls_info); |
3713 | } | |
3714 | if (rc) { | |
3715 | cERROR(1, ("Send error in SessSetup = %d", rc)); | |
3716 | } else { | |
3717 | cFYI(1, ("CIFS Session Established successfully")); | |
469ee614 | 3718 | spin_lock(&GlobalMid_Lock); |
1da177e4 | 3719 | pSesInfo->status = CifsGood; |
469ee614 | 3720 | spin_unlock(&GlobalMid_Lock); |
1da177e4 | 3721 | } |
26b994fa | 3722 | |
1da177e4 LT |
3723 | ss_err_exit: |
3724 | return rc; | |
3725 | } | |
3726 |