Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * fs/cifs/connect.c | |
3 | * | |
366781c1 | 4 | * Copyright (C) International Business Machines Corp., 2002,2008 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * This library is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU Lesser General Public License as published | |
9 | * by the Free Software Foundation; either version 2.1 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This library is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
15 | * the GNU Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public License | |
18 | * along with this library; if not, write to the Free Software | |
fb8c4b14 | 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
1da177e4 LT |
20 | */ |
21 | #include <linux/fs.h> | |
22 | #include <linux/net.h> | |
23 | #include <linux/string.h> | |
24 | #include <linux/list.h> | |
25 | #include <linux/wait.h> | |
26 | #include <linux/ipv6.h> | |
27 | #include <linux/pagemap.h> | |
28 | #include <linux/ctype.h> | |
29 | #include <linux/utsname.h> | |
30 | #include <linux/mempool.h> | |
b8643e1b | 31 | #include <linux/delay.h> |
f191401f | 32 | #include <linux/completion.h> |
aaf737ad | 33 | #include <linux/kthread.h> |
0ae0efad | 34 | #include <linux/pagevec.h> |
7dfb7103 | 35 | #include <linux/freezer.h> |
1da177e4 LT |
36 | #include <asm/uaccess.h> |
37 | #include <asm/processor.h> | |
38 | #include "cifspdu.h" | |
39 | #include "cifsglob.h" | |
40 | #include "cifsproto.h" | |
41 | #include "cifs_unicode.h" | |
42 | #include "cifs_debug.h" | |
43 | #include "cifs_fs_sb.h" | |
44 | #include "ntlmssp.h" | |
45 | #include "nterr.h" | |
46 | #include "rfc1002pdu.h" | |
a2653eba | 47 | #include "cn_cifs.h" |
1da177e4 LT |
48 | |
49 | #define CIFS_PORT 445 | |
50 | #define RFC1001_PORT 139 | |
51 | ||
1da177e4 LT |
52 | extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, |
53 | unsigned char *p24); | |
54 | ||
55 | extern mempool_t *cifs_req_poolp; | |
56 | ||
57 | struct smb_vol { | |
58 | char *username; | |
59 | char *password; | |
60 | char *domainname; | |
61 | char *UNC; | |
62 | char *UNCip; | |
95b1cb90 | 63 | char *in6_addr; /* ipv6 address as human readable form of in6_addr */ |
1da177e4 LT |
64 | char *iocharset; /* local code page for mapping to and from Unicode */ |
65 | char source_rfc1001_name[16]; /* netbios name of client */ | |
a10faeb2 | 66 | char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */ |
1da177e4 LT |
67 | uid_t linux_uid; |
68 | gid_t linux_gid; | |
69 | mode_t file_mode; | |
70 | mode_t dir_mode; | |
189acaae | 71 | unsigned secFlg; |
4b18f2a9 SF |
72 | bool rw:1; |
73 | bool retry:1; | |
74 | bool intr:1; | |
75 | bool setuids:1; | |
76 | bool override_uid:1; | |
77 | bool override_gid:1; | |
d0a9c078 | 78 | bool dynperm:1; |
4b18f2a9 SF |
79 | bool noperm:1; |
80 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
81 | bool cifs_acl:1; | |
82 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ | |
83 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
84 | bool direct_io:1; | |
95b1cb90 SF |
85 | bool remap:1; /* set to remap seven reserved chars in filenames */ |
86 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ | |
4b18f2a9 SF |
87 | bool no_linux_ext:1; |
88 | bool sfu_emul:1; | |
95b1cb90 SF |
89 | bool nullauth:1; /* attempt to authenticate with null user */ |
90 | bool nocase:1; /* request case insensitive filenames */ | |
91 | bool nobrl:1; /* disable sending byte range locks to srv */ | |
92 | bool seal:1; /* request transport encryption on share */ | |
1da177e4 LT |
93 | unsigned int rsize; |
94 | unsigned int wsize; | |
95 | unsigned int sockopt; | |
96 | unsigned short int port; | |
fb8c4b14 | 97 | char *prepath; |
1da177e4 LT |
98 | }; |
99 | ||
fb8c4b14 | 100 | static int ipv4_connect(struct sockaddr_in *psin_server, |
1da177e4 | 101 | struct socket **csocket, |
fb8c4b14 SF |
102 | char *netb_name, |
103 | char *server_netb_name); | |
104 | static int ipv6_connect(struct sockaddr_in6 *psin_server, | |
1da177e4 LT |
105 | struct socket **csocket); |
106 | ||
107 | ||
fb8c4b14 | 108 | /* |
1da177e4 | 109 | * cifs tcp session reconnection |
fb8c4b14 | 110 | * |
1da177e4 LT |
111 | * mark tcp session as reconnecting so temporarily locked |
112 | * mark all smb sessions as reconnecting for tcp session | |
113 | * reconnect tcp session | |
114 | * wake up waiters on reconnection? - (not needed currently) | |
115 | */ | |
116 | ||
2cd646a2 | 117 | static int |
1da177e4 LT |
118 | cifs_reconnect(struct TCP_Server_Info *server) |
119 | { | |
120 | int rc = 0; | |
121 | struct list_head *tmp; | |
122 | struct cifsSesInfo *ses; | |
123 | struct cifsTconInfo *tcon; | |
fb8c4b14 | 124 | struct mid_q_entry *mid_entry; |
50c2f753 | 125 | |
1da177e4 | 126 | spin_lock(&GlobalMid_Lock); |
26f57364 | 127 | if (kthread_should_stop()) { |
fb8c4b14 | 128 | /* the demux thread will exit normally |
1da177e4 LT |
129 | next time through the loop */ |
130 | spin_unlock(&GlobalMid_Lock); | |
131 | return rc; | |
132 | } else | |
133 | server->tcpStatus = CifsNeedReconnect; | |
134 | spin_unlock(&GlobalMid_Lock); | |
135 | server->maxBuf = 0; | |
136 | ||
e4eb295d | 137 | cFYI(1, ("Reconnecting tcp session")); |
1da177e4 LT |
138 | |
139 | /* before reconnecting the tcp session, mark the smb session (uid) | |
140 | and the tid bad so they are not used until reconnected */ | |
141 | read_lock(&GlobalSMBSeslock); | |
142 | list_for_each(tmp, &GlobalSMBSessionList) { | |
143 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
144 | if (ses->server) { | |
145 | if (ses->server == server) { | |
146 | ses->status = CifsNeedReconnect; | |
147 | ses->ipc_tid = 0; | |
148 | } | |
149 | } | |
150 | /* else tcp and smb sessions need reconnection */ | |
151 | } | |
152 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
153 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); | |
26f57364 | 154 | if ((tcon) && (tcon->ses) && (tcon->ses->server == server)) |
1da177e4 | 155 | tcon->tidStatus = CifsNeedReconnect; |
1da177e4 LT |
156 | } |
157 | read_unlock(&GlobalSMBSeslock); | |
158 | /* do not want to be sending data on a socket we are freeing */ | |
fb8c4b14 SF |
159 | down(&server->tcpSem); |
160 | if (server->ssocket) { | |
467a8f8d | 161 | cFYI(1, ("State: 0x%x Flags: 0x%lx", server->ssocket->state, |
1da177e4 | 162 | server->ssocket->flags)); |
91cf45f0 | 163 | kernel_sock_shutdown(server->ssocket, SHUT_WR); |
fb8c4b14 | 164 | cFYI(1, ("Post shutdown state: 0x%x Flags: 0x%lx", |
467a8f8d | 165 | server->ssocket->state, |
1da177e4 LT |
166 | server->ssocket->flags)); |
167 | sock_release(server->ssocket); | |
168 | server->ssocket = NULL; | |
169 | } | |
170 | ||
171 | spin_lock(&GlobalMid_Lock); | |
172 | list_for_each(tmp, &server->pending_mid_q) { | |
173 | mid_entry = list_entry(tmp, struct | |
174 | mid_q_entry, | |
175 | qhead); | |
fb8c4b14 SF |
176 | if (mid_entry) { |
177 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
09d1db5c SF |
178 | /* Mark other intransit requests as needing |
179 | retry so we do not immediately mark the | |
180 | session bad again (ie after we reconnect | |
181 | below) as they timeout too */ | |
1da177e4 LT |
182 | mid_entry->midState = MID_RETRY_NEEDED; |
183 | } | |
184 | } | |
185 | } | |
186 | spin_unlock(&GlobalMid_Lock); | |
fb8c4b14 | 187 | up(&server->tcpSem); |
1da177e4 | 188 | |
26f57364 | 189 | while ((!kthread_should_stop()) && (server->tcpStatus != CifsGood)) { |
6c3d8909 | 190 | try_to_freeze(); |
fb8c4b14 SF |
191 | if (server->protocolType == IPV6) { |
192 | rc = ipv6_connect(&server->addr.sockAddr6, | |
193 | &server->ssocket); | |
1da177e4 | 194 | } else { |
fb8c4b14 | 195 | rc = ipv4_connect(&server->addr.sockAddr, |
1da177e4 | 196 | &server->ssocket, |
a10faeb2 SF |
197 | server->workstation_RFC1001_name, |
198 | server->server_RFC1001_name); | |
1da177e4 | 199 | } |
fb8c4b14 SF |
200 | if (rc) { |
201 | cFYI(1, ("reconnect error %d", rc)); | |
0cb766ae | 202 | msleep(3000); |
1da177e4 LT |
203 | } else { |
204 | atomic_inc(&tcpSesReconnectCount); | |
205 | spin_lock(&GlobalMid_Lock); | |
26f57364 | 206 | if (!kthread_should_stop()) |
1da177e4 | 207 | server->tcpStatus = CifsGood; |
ad009ac9 | 208 | server->sequence_number = 0; |
fb8c4b14 | 209 | spin_unlock(&GlobalMid_Lock); |
1da177e4 LT |
210 | /* atomic_set(&server->inFlight,0);*/ |
211 | wake_up(&server->response_q); | |
212 | } | |
213 | } | |
214 | return rc; | |
215 | } | |
216 | ||
fb8c4b14 | 217 | /* |
e4eb295d SF |
218 | return codes: |
219 | 0 not a transact2, or all data present | |
220 | >0 transact2 with that much data missing | |
221 | -EINVAL = invalid transact2 | |
222 | ||
223 | */ | |
fb8c4b14 | 224 | static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) |
e4eb295d | 225 | { |
fb8c4b14 SF |
226 | struct smb_t2_rsp *pSMBt; |
227 | int total_data_size; | |
e4eb295d SF |
228 | int data_in_this_rsp; |
229 | int remaining; | |
230 | ||
fb8c4b14 | 231 | if (pSMB->Command != SMB_COM_TRANSACTION2) |
e4eb295d SF |
232 | return 0; |
233 | ||
fb8c4b14 SF |
234 | /* check for plausible wct, bcc and t2 data and parm sizes */ |
235 | /* check for parm and data offset going beyond end of smb */ | |
236 | if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
467a8f8d | 237 | cFYI(1, ("invalid transact2 word count")); |
e4eb295d SF |
238 | return -EINVAL; |
239 | } | |
240 | ||
241 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
242 | ||
243 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
244 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
245 | ||
246 | remaining = total_data_size - data_in_this_rsp; | |
247 | ||
fb8c4b14 | 248 | if (remaining == 0) |
e4eb295d | 249 | return 0; |
fb8c4b14 | 250 | else if (remaining < 0) { |
467a8f8d | 251 | cFYI(1, ("total data %d smaller than data in frame %d", |
e4eb295d SF |
252 | total_data_size, data_in_this_rsp)); |
253 | return -EINVAL; | |
254 | } else { | |
467a8f8d | 255 | cFYI(1, ("missing %d bytes from transact2, check next response", |
e4eb295d | 256 | remaining)); |
fb8c4b14 SF |
257 | if (total_data_size > maxBufSize) { |
258 | cERROR(1, ("TotalDataSize %d is over maximum buffer %d", | |
259 | total_data_size, maxBufSize)); | |
260 | return -EINVAL; | |
e4eb295d SF |
261 | } |
262 | return remaining; | |
263 | } | |
264 | } | |
265 | ||
fb8c4b14 | 266 | static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) |
e4eb295d SF |
267 | { |
268 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
269 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
270 | int total_data_size; | |
271 | int total_in_buf; | |
272 | int remaining; | |
273 | int total_in_buf2; | |
fb8c4b14 SF |
274 | char *data_area_of_target; |
275 | char *data_area_of_buf2; | |
e4eb295d SF |
276 | __u16 byte_count; |
277 | ||
278 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
279 | ||
fb8c4b14 | 280 | if (total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { |
63135e08 | 281 | cFYI(1, ("total data size of primary and secondary t2 differ")); |
e4eb295d SF |
282 | } |
283 | ||
284 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
285 | ||
286 | remaining = total_data_size - total_in_buf; | |
50c2f753 | 287 | |
fb8c4b14 | 288 | if (remaining < 0) |
e4eb295d SF |
289 | return -EINVAL; |
290 | ||
fb8c4b14 | 291 | if (remaining == 0) /* nothing to do, ignore */ |
e4eb295d | 292 | return 0; |
50c2f753 | 293 | |
e4eb295d | 294 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); |
fb8c4b14 | 295 | if (remaining < total_in_buf2) { |
467a8f8d | 296 | cFYI(1, ("transact2 2nd response contains too much data")); |
e4eb295d SF |
297 | } |
298 | ||
299 | /* find end of first SMB data area */ | |
fb8c4b14 | 300 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + |
e4eb295d SF |
301 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); |
302 | /* validate target area */ | |
303 | ||
304 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
fb8c4b14 | 305 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); |
e4eb295d SF |
306 | |
307 | data_area_of_target += total_in_buf; | |
308 | ||
309 | /* copy second buffer into end of first buffer */ | |
fb8c4b14 | 310 | memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); |
e4eb295d SF |
311 | total_in_buf += total_in_buf2; |
312 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
313 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
314 | byte_count += total_in_buf2; | |
315 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
316 | ||
70ca734a | 317 | byte_count = pTargetSMB->smb_buf_length; |
e4eb295d SF |
318 | byte_count += total_in_buf2; |
319 | ||
320 | /* BB also add check that we are not beyond maximum buffer size */ | |
50c2f753 | 321 | |
70ca734a | 322 | pTargetSMB->smb_buf_length = byte_count; |
e4eb295d | 323 | |
fb8c4b14 | 324 | if (remaining == total_in_buf2) { |
467a8f8d | 325 | cFYI(1, ("found the last secondary response")); |
e4eb295d SF |
326 | return 0; /* we are done */ |
327 | } else /* more responses to go */ | |
328 | return 1; | |
329 | ||
330 | } | |
331 | ||
1da177e4 LT |
332 | static int |
333 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
334 | { | |
335 | int length; | |
336 | unsigned int pdu_length, total_read; | |
337 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
338 | struct smb_hdr *bigbuf = NULL; |
339 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
340 | struct msghdr smb_msg; |
341 | struct kvec iov; | |
342 | struct socket *csocket = server->ssocket; | |
343 | struct list_head *tmp; | |
344 | struct cifsSesInfo *ses; | |
345 | struct task_struct *task_to_wake = NULL; | |
346 | struct mid_q_entry *mid_entry; | |
70ca734a | 347 | char temp; |
4b18f2a9 SF |
348 | bool isLargeBuf = false; |
349 | bool isMultiRsp; | |
e4eb295d | 350 | int reconnect; |
1da177e4 | 351 | |
1da177e4 | 352 | current->flags |= PF_MEMALLOC; |
ba25f9dc | 353 | cFYI(1, ("Demultiplex PID: %d", task_pid_nr(current))); |
fb8c4b14 | 354 | write_lock(&GlobalSMBSeslock); |
1da177e4 LT |
355 | atomic_inc(&tcpSesAllocCount); |
356 | length = tcpSesAllocCount.counter; | |
357 | write_unlock(&GlobalSMBSeslock); | |
26f57364 SF |
358 | if (length > 1) |
359 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, | |
360 | GFP_KERNEL); | |
1da177e4 | 361 | |
83144186 | 362 | set_freezable(); |
aaf737ad | 363 | while (!kthread_should_stop()) { |
ede1327e SF |
364 | if (try_to_freeze()) |
365 | continue; | |
b8643e1b SF |
366 | if (bigbuf == NULL) { |
367 | bigbuf = cifs_buf_get(); | |
0fd1ffe0 PM |
368 | if (!bigbuf) { |
369 | cERROR(1, ("No memory for large SMB response")); | |
b8643e1b SF |
370 | msleep(3000); |
371 | /* retry will check if exiting */ | |
372 | continue; | |
373 | } | |
0fd1ffe0 PM |
374 | } else if (isLargeBuf) { |
375 | /* we are reusing a dirty large buf, clear its start */ | |
26f57364 | 376 | memset(bigbuf, 0, sizeof(struct smb_hdr)); |
1da177e4 | 377 | } |
b8643e1b SF |
378 | |
379 | if (smallbuf == NULL) { | |
380 | smallbuf = cifs_small_buf_get(); | |
0fd1ffe0 PM |
381 | if (!smallbuf) { |
382 | cERROR(1, ("No memory for SMB response")); | |
b8643e1b SF |
383 | msleep(1000); |
384 | /* retry will check if exiting */ | |
385 | continue; | |
386 | } | |
387 | /* beginning of smb buffer is cleared in our buf_get */ | |
388 | } else /* if existing small buf clear beginning */ | |
26f57364 | 389 | memset(smallbuf, 0, sizeof(struct smb_hdr)); |
b8643e1b | 390 | |
4b18f2a9 SF |
391 | isLargeBuf = false; |
392 | isMultiRsp = false; | |
b8643e1b | 393 | smb_buffer = smallbuf; |
1da177e4 LT |
394 | iov.iov_base = smb_buffer; |
395 | iov.iov_len = 4; | |
396 | smb_msg.msg_control = NULL; | |
397 | smb_msg.msg_controllen = 0; | |
f01d5e14 SF |
398 | pdu_length = 4; /* enough to get RFC1001 header */ |
399 | incomplete_rcv: | |
1da177e4 LT |
400 | length = |
401 | kernel_recvmsg(csocket, &smb_msg, | |
f01d5e14 | 402 | &iov, 1, pdu_length, 0 /* BB other flags? */); |
1da177e4 | 403 | |
26f57364 | 404 | if (kthread_should_stop()) { |
1da177e4 LT |
405 | break; |
406 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
0fd1ffe0 | 407 | cFYI(1, ("Reconnect after server stopped responding")); |
1da177e4 | 408 | cifs_reconnect(server); |
0fd1ffe0 | 409 | cFYI(1, ("call to reconnect done")); |
1da177e4 LT |
410 | csocket = server->ssocket; |
411 | continue; | |
412 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 413 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
414 | allowing socket to clear and app threads to set |
415 | tcpStatus CifsNeedReconnect if server hung */ | |
c18c732e SF |
416 | if (pdu_length < 4) |
417 | goto incomplete_rcv; | |
418 | else | |
419 | continue; | |
1da177e4 | 420 | } else if (length <= 0) { |
0fd1ffe0 PM |
421 | if (server->tcpStatus == CifsNew) { |
422 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
423 | /* some servers kill the TCP session rather than |
424 | returning an SMB negprot error, in which | |
425 | case reconnecting here is not going to help, | |
426 | and so simply return error to mount */ | |
1da177e4 LT |
427 | break; |
428 | } | |
0fd1ffe0 | 429 | if (!try_to_freeze() && (length == -EINTR)) { |
467a8f8d | 430 | cFYI(1, ("cifsd thread killed")); |
1da177e4 LT |
431 | break; |
432 | } | |
467a8f8d | 433 | cFYI(1, ("Reconnect after unexpected peek error %d", |
57337e42 | 434 | length)); |
1da177e4 LT |
435 | cifs_reconnect(server); |
436 | csocket = server->ssocket; | |
437 | wake_up(&server->response_q); | |
438 | continue; | |
2a974680 PT |
439 | } else if (length < pdu_length) { |
440 | cFYI(1, ("requested %d bytes but only got %d bytes", | |
441 | pdu_length, length)); | |
f01d5e14 | 442 | pdu_length -= length; |
f01d5e14 SF |
443 | msleep(1); |
444 | goto incomplete_rcv; | |
46810cbf | 445 | } |
1da177e4 | 446 | |
70ca734a SF |
447 | /* The right amount was read from socket - 4 bytes */ |
448 | /* so we can now interpret the length field */ | |
46810cbf | 449 | |
70ca734a SF |
450 | /* the first byte big endian of the length field, |
451 | is actually not part of the length but the type | |
452 | with the most common, zero, as regular data */ | |
453 | temp = *((char *) smb_buffer); | |
46810cbf | 454 | |
fb8c4b14 | 455 | /* Note that FC 1001 length is big endian on the wire, |
70ca734a SF |
456 | but we convert it here so it is always manipulated |
457 | as host byte order */ | |
46810cbf | 458 | pdu_length = ntohl(smb_buffer->smb_buf_length); |
70ca734a SF |
459 | smb_buffer->smb_buf_length = pdu_length; |
460 | ||
467a8f8d | 461 | cFYI(1, ("rfc1002 length 0x%x", pdu_length+4)); |
46810cbf | 462 | |
70ca734a | 463 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
fb8c4b14 | 464 | continue; |
70ca734a | 465 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
467a8f8d | 466 | cFYI(1, ("Good RFC 1002 session rsp")); |
e4eb295d | 467 | continue; |
70ca734a | 468 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
fb8c4b14 | 469 | /* we get this from Windows 98 instead of |
46810cbf | 470 | an error on SMB negprot response */ |
fb8c4b14 | 471 | cFYI(1, ("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 472 | pdu_length)); |
fb8c4b14 SF |
473 | if (server->tcpStatus == CifsNew) { |
474 | /* if nack on negprot (rather than | |
46810cbf SF |
475 | ret of smb negprot error) reconnecting |
476 | not going to help, ret error to mount */ | |
477 | break; | |
478 | } else { | |
479 | /* give server a second to | |
480 | clean up before reconnect attempt */ | |
481 | msleep(1000); | |
482 | /* always try 445 first on reconnect | |
483 | since we get NACK on some if we ever | |
fb8c4b14 | 484 | connected to port 139 (the NACK is |
46810cbf SF |
485 | since we do not begin with RFC1001 |
486 | session initialize frame) */ | |
fb8c4b14 | 487 | server->addr.sockAddr.sin_port = |
46810cbf | 488 | htons(CIFS_PORT); |
1da177e4 LT |
489 | cifs_reconnect(server); |
490 | csocket = server->ssocket; | |
46810cbf | 491 | wake_up(&server->response_q); |
1da177e4 | 492 | continue; |
46810cbf | 493 | } |
70ca734a | 494 | } else if (temp != (char) 0) { |
fb8c4b14 | 495 | cERROR(1, ("Unknown RFC 1002 frame")); |
70ca734a SF |
496 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
497 | length); | |
46810cbf SF |
498 | cifs_reconnect(server); |
499 | csocket = server->ssocket; | |
500 | continue; | |
e4eb295d SF |
501 | } |
502 | ||
503 | /* else we have an SMB response */ | |
fb8c4b14 | 504 | if ((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || |
26f57364 | 505 | (pdu_length < sizeof(struct smb_hdr) - 1 - 4)) { |
e4eb295d | 506 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 507 | length, pdu_length+4)); |
e4eb295d SF |
508 | cifs_reconnect(server); |
509 | csocket = server->ssocket; | |
510 | wake_up(&server->response_q); | |
511 | continue; | |
fb8c4b14 | 512 | } |
e4eb295d SF |
513 | |
514 | /* else length ok */ | |
515 | reconnect = 0; | |
516 | ||
fb8c4b14 | 517 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
4b18f2a9 | 518 | isLargeBuf = true; |
e4eb295d SF |
519 | memcpy(bigbuf, smallbuf, 4); |
520 | smb_buffer = bigbuf; | |
521 | } | |
522 | length = 0; | |
523 | iov.iov_base = 4 + (char *)smb_buffer; | |
524 | iov.iov_len = pdu_length; | |
fb8c4b14 | 525 | for (total_read = 0; total_read < pdu_length; |
e4eb295d SF |
526 | total_read += length) { |
527 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
528 | pdu_length - total_read, 0); | |
26f57364 | 529 | if (kthread_should_stop() || |
e4eb295d SF |
530 | (length == -EINTR)) { |
531 | /* then will exit */ | |
532 | reconnect = 2; | |
533 | break; | |
534 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
535 | cifs_reconnect(server); |
536 | csocket = server->ssocket; | |
fb8c4b14 | 537 | /* Reconnect wakes up rspns q */ |
e4eb295d SF |
538 | /* Now we will reread sock */ |
539 | reconnect = 1; | |
540 | break; | |
fb8c4b14 | 541 | } else if ((length == -ERESTARTSYS) || |
e4eb295d SF |
542 | (length == -EAGAIN)) { |
543 | msleep(1); /* minimum sleep to prevent looping, | |
fb8c4b14 | 544 | allowing socket to clear and app |
e4eb295d SF |
545 | threads to set tcpStatus |
546 | CifsNeedReconnect if server hung*/ | |
c18c732e | 547 | length = 0; |
46810cbf | 548 | continue; |
e4eb295d | 549 | } else if (length <= 0) { |
fb8c4b14 | 550 | cERROR(1, ("Received no data, expecting %d", |
e4eb295d SF |
551 | pdu_length - total_read)); |
552 | cifs_reconnect(server); | |
553 | csocket = server->ssocket; | |
554 | reconnect = 1; | |
555 | break; | |
46810cbf | 556 | } |
e4eb295d | 557 | } |
fb8c4b14 | 558 | if (reconnect == 2) |
e4eb295d | 559 | break; |
fb8c4b14 | 560 | else if (reconnect == 1) |
e4eb295d | 561 | continue; |
1da177e4 | 562 | |
e4eb295d | 563 | length += 4; /* account for rfc1002 hdr */ |
50c2f753 | 564 | |
09d1db5c | 565 | |
e4eb295d | 566 | dump_smb(smb_buffer, length); |
184ed211 | 567 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 568 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
569 | continue; |
570 | } | |
1da177e4 | 571 | |
e4eb295d SF |
572 | |
573 | task_to_wake = NULL; | |
574 | spin_lock(&GlobalMid_Lock); | |
575 | list_for_each(tmp, &server->pending_mid_q) { | |
576 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
577 | ||
50c2f753 | 578 | if ((mid_entry->mid == smb_buffer->Mid) && |
e4eb295d SF |
579 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && |
580 | (mid_entry->command == smb_buffer->Command)) { | |
fb8c4b14 | 581 | if (check2ndT2(smb_buffer,server->maxBuf) > 0) { |
e4eb295d | 582 | /* We have a multipart transact2 resp */ |
4b18f2a9 | 583 | isMultiRsp = true; |
fb8c4b14 | 584 | if (mid_entry->resp_buf) { |
e4eb295d | 585 | /* merge response - fix up 1st*/ |
50c2f753 | 586 | if (coalesce_t2(smb_buffer, |
e4eb295d | 587 | mid_entry->resp_buf)) { |
4b18f2a9 SF |
588 | mid_entry->multiRsp = |
589 | true; | |
e4eb295d SF |
590 | break; |
591 | } else { | |
592 | /* all parts received */ | |
4b18f2a9 SF |
593 | mid_entry->multiEnd = |
594 | true; | |
50c2f753 | 595 | goto multi_t2_fnd; |
e4eb295d SF |
596 | } |
597 | } else { | |
fb8c4b14 | 598 | if (!isLargeBuf) { |
e4eb295d SF |
599 | cERROR(1,("1st trans2 resp needs bigbuf")); |
600 | /* BB maybe we can fix this up, switch | |
50c2f753 | 601 | to already allocated large buffer? */ |
e4eb295d | 602 | } else { |
cd63499c | 603 | /* Have first buffer */ |
e4eb295d SF |
604 | mid_entry->resp_buf = |
605 | smb_buffer; | |
4b18f2a9 SF |
606 | mid_entry->largeBuf = |
607 | true; | |
e4eb295d SF |
608 | bigbuf = NULL; |
609 | } | |
610 | } | |
611 | break; | |
50c2f753 | 612 | } |
e4eb295d | 613 | mid_entry->resp_buf = smb_buffer; |
4b18f2a9 | 614 | mid_entry->largeBuf = isLargeBuf; |
e4eb295d SF |
615 | multi_t2_fnd: |
616 | task_to_wake = mid_entry->tsk; | |
617 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
618 | #ifdef CONFIG_CIFS_STATS2 |
619 | mid_entry->when_received = jiffies; | |
620 | #endif | |
3a5ff61c SF |
621 | /* so we do not time out requests to server |
622 | which is still responding (since server could | |
623 | be busy but not dead) */ | |
624 | server->lstrp = jiffies; | |
e4eb295d | 625 | break; |
46810cbf | 626 | } |
1da177e4 | 627 | } |
e4eb295d SF |
628 | spin_unlock(&GlobalMid_Lock); |
629 | if (task_to_wake) { | |
cd63499c | 630 | /* Was previous buf put in mpx struct for multi-rsp? */ |
fb8c4b14 | 631 | if (!isMultiRsp) { |
cd63499c | 632 | /* smb buffer will be freed by user thread */ |
26f57364 | 633 | if (isLargeBuf) |
cd63499c | 634 | bigbuf = NULL; |
26f57364 | 635 | else |
cd63499c SF |
636 | smallbuf = NULL; |
637 | } | |
e4eb295d | 638 | wake_up_process(task_to_wake); |
4b18f2a9 SF |
639 | } else if (!is_valid_oplock_break(smb_buffer, server) && |
640 | !isMultiRsp) { | |
50c2f753 SF |
641 | cERROR(1, ("No task to wake, unknown frame received! " |
642 | "NumMids %d", midCount.counter)); | |
643 | cifs_dump_mem("Received Data is: ", (char *)smb_buffer, | |
70ca734a | 644 | sizeof(struct smb_hdr)); |
3979877e SF |
645 | #ifdef CONFIG_CIFS_DEBUG2 |
646 | cifs_dump_detail(smb_buffer); | |
647 | cifs_dump_mids(server); | |
648 | #endif /* CIFS_DEBUG2 */ | |
50c2f753 | 649 | |
e4eb295d SF |
650 | } |
651 | } /* end while !EXITING */ | |
652 | ||
1da177e4 LT |
653 | spin_lock(&GlobalMid_Lock); |
654 | server->tcpStatus = CifsExiting; | |
e691b9d1 SF |
655 | spin_unlock(&GlobalMid_Lock); |
656 | ||
657 | /* don't exit until kthread_stop is called */ | |
658 | set_current_state(TASK_UNINTERRUPTIBLE); | |
659 | while (!kthread_should_stop()) { | |
660 | schedule(); | |
661 | set_current_state(TASK_UNINTERRUPTIBLE); | |
662 | } | |
663 | set_current_state(TASK_RUNNING); | |
664 | ||
31ca3bc3 SF |
665 | /* check if we have blocked requests that need to free */ |
666 | /* Note that cifs_max_pending is normally 50, but | |
667 | can be set at module install time to as little as two */ | |
e691b9d1 | 668 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 | 669 | if (atomic_read(&server->inFlight) >= cifs_max_pending) |
31ca3bc3 SF |
670 | atomic_set(&server->inFlight, cifs_max_pending - 1); |
671 | /* We do not want to set the max_pending too low or we | |
672 | could end up with the counter going negative */ | |
1da177e4 | 673 | spin_unlock(&GlobalMid_Lock); |
50c2f753 | 674 | /* Although there should not be any requests blocked on |
1da177e4 | 675 | this queue it can not hurt to be paranoid and try to wake up requests |
09d1db5c | 676 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
677 | to the same server - they now will see the session is in exit state |
678 | and get out of SendReceive. */ | |
679 | wake_up_all(&server->request_q); | |
680 | /* give those requests time to exit */ | |
b8643e1b | 681 | msleep(125); |
50c2f753 | 682 | |
fb8c4b14 | 683 | if (server->ssocket) { |
1da177e4 LT |
684 | sock_release(csocket); |
685 | server->ssocket = NULL; | |
686 | } | |
b8643e1b | 687 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
a8a11d39 MK |
688 | cifs_buf_release(bigbuf); |
689 | if (smallbuf) /* no sense logging a debug message if NULL */ | |
b8643e1b | 690 | cifs_small_buf_release(smallbuf); |
1da177e4 LT |
691 | |
692 | read_lock(&GlobalSMBSeslock); | |
693 | if (list_empty(&server->pending_mid_q)) { | |
09d1db5c SF |
694 | /* loop through server session structures attached to this and |
695 | mark them dead */ | |
1da177e4 LT |
696 | list_for_each(tmp, &GlobalSMBSessionList) { |
697 | ses = | |
698 | list_entry(tmp, struct cifsSesInfo, | |
699 | cifsSessionList); | |
700 | if (ses->server == server) { | |
701 | ses->status = CifsExiting; | |
702 | ses->server = NULL; | |
703 | } | |
704 | } | |
705 | read_unlock(&GlobalSMBSeslock); | |
706 | } else { | |
31ca3bc3 SF |
707 | /* although we can not zero the server struct pointer yet, |
708 | since there are active requests which may depnd on them, | |
709 | mark the corresponding SMB sessions as exiting too */ | |
710 | list_for_each(tmp, &GlobalSMBSessionList) { | |
711 | ses = list_entry(tmp, struct cifsSesInfo, | |
712 | cifsSessionList); | |
26f57364 | 713 | if (ses->server == server) |
31ca3bc3 | 714 | ses->status = CifsExiting; |
31ca3bc3 SF |
715 | } |
716 | ||
1da177e4 LT |
717 | spin_lock(&GlobalMid_Lock); |
718 | list_for_each(tmp, &server->pending_mid_q) { | |
719 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
720 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
50c2f753 SF |
721 | cFYI(1, ("Clearing Mid 0x%x - waking up ", |
722 | mid_entry->mid)); | |
1da177e4 | 723 | task_to_wake = mid_entry->tsk; |
26f57364 | 724 | if (task_to_wake) |
1da177e4 | 725 | wake_up_process(task_to_wake); |
1da177e4 LT |
726 | } |
727 | } | |
728 | spin_unlock(&GlobalMid_Lock); | |
729 | read_unlock(&GlobalSMBSeslock); | |
1da177e4 | 730 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 731 | msleep(125); |
1da177e4 LT |
732 | } |
733 | ||
f191401f | 734 | if (!list_empty(&server->pending_mid_q)) { |
50c2f753 | 735 | /* mpx threads have not exited yet give them |
1da177e4 | 736 | at least the smb send timeout time for long ops */ |
31ca3bc3 SF |
737 | /* due to delays on oplock break requests, we need |
738 | to wait at least 45 seconds before giving up | |
739 | on a request getting a response and going ahead | |
740 | and killing cifsd */ | |
1da177e4 | 741 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 742 | msleep(46000); |
1da177e4 LT |
743 | /* if threads still have not exited they are probably never |
744 | coming home not much else we can do but free the memory */ | |
745 | } | |
1da177e4 LT |
746 | |
747 | write_lock(&GlobalSMBSeslock); | |
748 | atomic_dec(&tcpSesAllocCount); | |
749 | length = tcpSesAllocCount.counter; | |
31ca3bc3 SF |
750 | |
751 | /* last chance to mark ses pointers invalid | |
752 | if there are any pointing to this (e.g | |
50c2f753 | 753 | if a crazy root user tried to kill cifsd |
31ca3bc3 SF |
754 | kernel thread explicitly this might happen) */ |
755 | list_for_each(tmp, &GlobalSMBSessionList) { | |
756 | ses = list_entry(tmp, struct cifsSesInfo, | |
757 | cifsSessionList); | |
26f57364 | 758 | if (ses->server == server) |
31ca3bc3 | 759 | ses->server = NULL; |
31ca3bc3 | 760 | } |
1da177e4 | 761 | write_unlock(&GlobalSMBSeslock); |
31ca3bc3 | 762 | |
c359cf3c | 763 | kfree(server->hostname); |
31ca3bc3 | 764 | kfree(server); |
26f57364 SF |
765 | if (length > 0) |
766 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, | |
767 | GFP_KERNEL); | |
50c2f753 | 768 | |
1da177e4 LT |
769 | return 0; |
770 | } | |
771 | ||
c359cf3c JL |
772 | /* extract the host portion of the UNC string */ |
773 | static char * | |
774 | extract_hostname(const char *unc) | |
775 | { | |
776 | const char *src; | |
777 | char *dst, *delim; | |
778 | unsigned int len; | |
779 | ||
780 | /* skip double chars at beginning of string */ | |
781 | /* BB: check validity of these bytes? */ | |
782 | src = unc + 2; | |
783 | ||
784 | /* delimiter between hostname and sharename is always '\\' now */ | |
785 | delim = strchr(src, '\\'); | |
786 | if (!delim) | |
787 | return ERR_PTR(-EINVAL); | |
788 | ||
789 | len = delim - src; | |
790 | dst = kmalloc((len + 1), GFP_KERNEL); | |
791 | if (dst == NULL) | |
792 | return ERR_PTR(-ENOMEM); | |
793 | ||
794 | memcpy(dst, src, len); | |
795 | dst[len] = '\0'; | |
796 | ||
797 | return dst; | |
798 | } | |
799 | ||
1da177e4 | 800 | static int |
50c2f753 SF |
801 | cifs_parse_mount_options(char *options, const char *devname, |
802 | struct smb_vol *vol) | |
1da177e4 LT |
803 | { |
804 | char *value; | |
805 | char *data; | |
806 | unsigned int temp_len, i, j; | |
807 | char separator[2]; | |
808 | ||
809 | separator[0] = ','; | |
50c2f753 | 810 | separator[1] = 0; |
1da177e4 | 811 | |
12e36b2f | 812 | if (Local_System_Name[0] != 0) |
50c2f753 | 813 | memcpy(vol->source_rfc1001_name, Local_System_Name, 15); |
2cd646a2 | 814 | else { |
12e36b2f | 815 | char *nodename = utsname()->nodename; |
50c2f753 SF |
816 | int n = strnlen(nodename, 15); |
817 | memset(vol->source_rfc1001_name, 0x20, 15); | |
818 | for (i = 0; i < n; i++) { | |
2cd646a2 SF |
819 | /* does not have to be perfect mapping since field is |
820 | informational, only used for servers that do not support | |
821 | port 445 and it can be overridden at mount time */ | |
12e36b2f | 822 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
2cd646a2 | 823 | } |
1da177e4 LT |
824 | } |
825 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
826 | /* null target name indicates to use *SMBSERVR default called name |
827 | if we end up sending RFC1001 session initialize */ | |
828 | vol->target_rfc1001_name[0] = 0; | |
1da177e4 LT |
829 | vol->linux_uid = current->uid; /* current->euid instead? */ |
830 | vol->linux_gid = current->gid; | |
831 | vol->dir_mode = S_IRWXUGO; | |
832 | /* 2767 perms indicate mandatory locking support */ | |
7505e052 | 833 | vol->file_mode = (S_IRWXUGO | S_ISGID) & (~S_IXGRP); |
1da177e4 LT |
834 | |
835 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
4b18f2a9 | 836 | vol->rw = true; |
ac67055e JA |
837 | /* default is always to request posix paths. */ |
838 | vol->posix_paths = 1; | |
839 | ||
1da177e4 LT |
840 | if (!options) |
841 | return 1; | |
842 | ||
50c2f753 | 843 | if (strncmp(options, "sep=", 4) == 0) { |
fb8c4b14 | 844 | if (options[4] != 0) { |
1da177e4 LT |
845 | separator[0] = options[4]; |
846 | options += 5; | |
847 | } else { | |
467a8f8d | 848 | cFYI(1, ("Null separator not allowed")); |
1da177e4 LT |
849 | } |
850 | } | |
50c2f753 | 851 | |
1da177e4 LT |
852 | while ((data = strsep(&options, separator)) != NULL) { |
853 | if (!*data) | |
854 | continue; | |
855 | if ((value = strchr(data, '=')) != NULL) | |
856 | *value++ = '\0'; | |
857 | ||
50c2f753 SF |
858 | /* Have to parse this before we parse for "user" */ |
859 | if (strnicmp(data, "user_xattr", 10) == 0) { | |
1da177e4 | 860 | vol->no_xattr = 0; |
50c2f753 | 861 | } else if (strnicmp(data, "nouser_xattr", 12) == 0) { |
1da177e4 LT |
862 | vol->no_xattr = 1; |
863 | } else if (strnicmp(data, "user", 4) == 0) { | |
4b952a9b | 864 | if (!value) { |
1da177e4 LT |
865 | printk(KERN_WARNING |
866 | "CIFS: invalid or missing username\n"); | |
867 | return 1; /* needs_arg; */ | |
fb8c4b14 | 868 | } else if (!*value) { |
4b952a9b SF |
869 | /* null user, ie anonymous, authentication */ |
870 | vol->nullauth = 1; | |
1da177e4 LT |
871 | } |
872 | if (strnlen(value, 200) < 200) { | |
873 | vol->username = value; | |
874 | } else { | |
875 | printk(KERN_WARNING "CIFS: username too long\n"); | |
876 | return 1; | |
877 | } | |
878 | } else if (strnicmp(data, "pass", 4) == 0) { | |
879 | if (!value) { | |
880 | vol->password = NULL; | |
881 | continue; | |
fb8c4b14 | 882 | } else if (value[0] == 0) { |
1da177e4 LT |
883 | /* check if string begins with double comma |
884 | since that would mean the password really | |
885 | does start with a comma, and would not | |
886 | indicate an empty string */ | |
fb8c4b14 | 887 | if (value[1] != separator[0]) { |
1da177e4 LT |
888 | vol->password = NULL; |
889 | continue; | |
890 | } | |
891 | } | |
892 | temp_len = strlen(value); | |
893 | /* removed password length check, NTLM passwords | |
894 | can be arbitrarily long */ | |
895 | ||
50c2f753 | 896 | /* if comma in password, the string will be |
1da177e4 LT |
897 | prematurely null terminated. Commas in password are |
898 | specified across the cifs mount interface by a double | |
899 | comma ie ,, and a comma used as in other cases ie ',' | |
900 | as a parameter delimiter/separator is single and due | |
901 | to the strsep above is temporarily zeroed. */ | |
902 | ||
903 | /* NB: password legally can have multiple commas and | |
904 | the only illegal character in a password is null */ | |
905 | ||
50c2f753 | 906 | if ((value[temp_len] == 0) && |
09d1db5c | 907 | (value[temp_len+1] == separator[0])) { |
1da177e4 LT |
908 | /* reinsert comma */ |
909 | value[temp_len] = separator[0]; | |
50c2f753 SF |
910 | temp_len += 2; /* move after second comma */ |
911 | while (value[temp_len] != 0) { | |
1da177e4 | 912 | if (value[temp_len] == separator[0]) { |
50c2f753 | 913 | if (value[temp_len+1] == |
09d1db5c SF |
914 | separator[0]) { |
915 | /* skip second comma */ | |
916 | temp_len++; | |
50c2f753 | 917 | } else { |
1da177e4 LT |
918 | /* single comma indicating start |
919 | of next parm */ | |
920 | break; | |
921 | } | |
922 | } | |
923 | temp_len++; | |
924 | } | |
fb8c4b14 | 925 | if (value[temp_len] == 0) { |
1da177e4 LT |
926 | options = NULL; |
927 | } else { | |
928 | value[temp_len] = 0; | |
929 | /* point option to start of next parm */ | |
930 | options = value + temp_len + 1; | |
931 | } | |
50c2f753 | 932 | /* go from value to value + temp_len condensing |
1da177e4 LT |
933 | double commas to singles. Note that this ends up |
934 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 935 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
fb8c4b14 | 936 | if (vol->password == NULL) { |
50c2f753 SF |
937 | printk(KERN_WARNING "CIFS: no memory " |
938 | "for password\n"); | |
433dc24f SF |
939 | return 1; |
940 | } | |
50c2f753 | 941 | for (i = 0, j = 0; i < temp_len; i++, j++) { |
1da177e4 | 942 | vol->password[j] = value[i]; |
fb8c4b14 | 943 | if (value[i] == separator[0] |
09d1db5c | 944 | && value[i+1] == separator[0]) { |
1da177e4 LT |
945 | /* skip second comma */ |
946 | i++; | |
947 | } | |
948 | } | |
949 | vol->password[j] = 0; | |
950 | } else { | |
e915fc49 | 951 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
fb8c4b14 | 952 | if (vol->password == NULL) { |
50c2f753 SF |
953 | printk(KERN_WARNING "CIFS: no memory " |
954 | "for password\n"); | |
433dc24f SF |
955 | return 1; |
956 | } | |
1da177e4 LT |
957 | strcpy(vol->password, value); |
958 | } | |
959 | } else if (strnicmp(data, "ip", 2) == 0) { | |
960 | if (!value || !*value) { | |
961 | vol->UNCip = NULL; | |
962 | } else if (strnlen(value, 35) < 35) { | |
963 | vol->UNCip = value; | |
964 | } else { | |
50c2f753 SF |
965 | printk(KERN_WARNING "CIFS: ip address " |
966 | "too long\n"); | |
1da177e4 LT |
967 | return 1; |
968 | } | |
50c2f753 SF |
969 | } else if (strnicmp(data, "sec", 3) == 0) { |
970 | if (!value || !*value) { | |
971 | cERROR(1, ("no security value specified")); | |
972 | continue; | |
973 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
974 | vol->secFlg |= CIFSSEC_MAY_KRB5 | | |
189acaae | 975 | CIFSSEC_MUST_SIGN; |
bf820679 | 976 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
50c2f753 SF |
977 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
978 | CIFSSEC_MAY_KRB5; */ | |
979 | cERROR(1, ("Krb5 cifs privacy not supported")); | |
bf820679 SF |
980 | return 1; |
981 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 982 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
bf820679 | 983 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 984 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 985 | CIFSSEC_MUST_SIGN; |
bf820679 | 986 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 987 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 988 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 989 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 990 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
991 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
992 | /* ntlm is default so can be turned off too */ | |
750d1151 | 993 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 994 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 995 | /* BB is there a better way to do this? */ |
750d1151 | 996 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
997 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
998 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
50c2f753 | 999 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 1000 | #endif |
bf820679 | 1001 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 1002 | vol->nullauth = 1; |
50c2f753 SF |
1003 | } else { |
1004 | cERROR(1, ("bad security option: %s", value)); | |
1005 | return 1; | |
1006 | } | |
1da177e4 LT |
1007 | } else if ((strnicmp(data, "unc", 3) == 0) |
1008 | || (strnicmp(data, "target", 6) == 0) | |
1009 | || (strnicmp(data, "path", 4) == 0)) { | |
1010 | if (!value || !*value) { | |
50c2f753 SF |
1011 | printk(KERN_WARNING "CIFS: invalid path to " |
1012 | "network resource\n"); | |
1da177e4 LT |
1013 | return 1; /* needs_arg; */ |
1014 | } | |
1015 | if ((temp_len = strnlen(value, 300)) < 300) { | |
50c2f753 | 1016 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1017 | if (vol->UNC == NULL) |
1da177e4 | 1018 | return 1; |
50c2f753 | 1019 | strcpy(vol->UNC, value); |
1da177e4 LT |
1020 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1021 | vol->UNC[0] = '\\'; | |
1022 | vol->UNC[1] = '\\'; | |
50c2f753 | 1023 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
1da177e4 | 1024 | printk(KERN_WARNING |
50c2f753 SF |
1025 | "CIFS: UNC Path does not begin " |
1026 | "with // or \\\\ \n"); | |
1da177e4 LT |
1027 | return 1; |
1028 | } | |
1029 | } else { | |
1030 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1031 | return 1; | |
1032 | } | |
1033 | } else if ((strnicmp(data, "domain", 3) == 0) | |
1034 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
1035 | if (!value || !*value) { | |
1036 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
1037 | return 1; /* needs_arg; */ | |
1038 | } | |
1039 | /* BB are there cases in which a comma can be valid in | |
1040 | a domain name and need special handling? */ | |
3979877e | 1041 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
1042 | vol->domainname = value; |
1043 | cFYI(1, ("Domain name set")); | |
1044 | } else { | |
50c2f753 SF |
1045 | printk(KERN_WARNING "CIFS: domain name too " |
1046 | "long\n"); | |
1da177e4 LT |
1047 | return 1; |
1048 | } | |
50c2f753 SF |
1049 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
1050 | if (!value || !*value) { | |
1051 | printk(KERN_WARNING | |
1052 | "CIFS: invalid path prefix\n"); | |
1053 | return 1; /* needs_argument */ | |
1054 | } | |
1055 | if ((temp_len = strnlen(value, 1024)) < 1024) { | |
4523cc30 | 1056 | if (value[0] != '/') |
2fe87f02 | 1057 | temp_len++; /* missing leading slash */ |
50c2f753 SF |
1058 | vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); |
1059 | if (vol->prepath == NULL) | |
1060 | return 1; | |
4523cc30 | 1061 | if (value[0] != '/') { |
2fe87f02 | 1062 | vol->prepath[0] = '/'; |
50c2f753 | 1063 | strcpy(vol->prepath+1, value); |
2fe87f02 | 1064 | } else |
50c2f753 SF |
1065 | strcpy(vol->prepath, value); |
1066 | cFYI(1, ("prefix path %s", vol->prepath)); | |
1067 | } else { | |
1068 | printk(KERN_WARNING "CIFS: prefix too long\n"); | |
1069 | return 1; | |
1070 | } | |
1da177e4 LT |
1071 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
1072 | if (!value || !*value) { | |
63135e08 SF |
1073 | printk(KERN_WARNING "CIFS: invalid iocharset " |
1074 | "specified\n"); | |
1da177e4 LT |
1075 | return 1; /* needs_arg; */ |
1076 | } | |
1077 | if (strnlen(value, 65) < 65) { | |
50c2f753 | 1078 | if (strnicmp(value, "default", 7)) |
1da177e4 | 1079 | vol->iocharset = value; |
50c2f753 SF |
1080 | /* if iocharset not set then load_nls_default |
1081 | is used by caller */ | |
1082 | cFYI(1, ("iocharset set to %s", value)); | |
1da177e4 | 1083 | } else { |
63135e08 SF |
1084 | printk(KERN_WARNING "CIFS: iocharset name " |
1085 | "too long.\n"); | |
1da177e4 LT |
1086 | return 1; |
1087 | } | |
1088 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1089 | if (value && *value) { | |
1090 | vol->linux_uid = | |
1091 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1092 | vol->override_uid = 1; |
1da177e4 LT |
1093 | } |
1094 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1095 | if (value && *value) { | |
1096 | vol->linux_gid = | |
1097 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1098 | vol->override_gid = 1; |
1da177e4 LT |
1099 | } |
1100 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1101 | if (value && *value) { | |
1102 | vol->file_mode = | |
1103 | simple_strtoul(value, &value, 0); | |
1104 | } | |
1105 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1106 | if (value && *value) { | |
1107 | vol->dir_mode = | |
1108 | simple_strtoul(value, &value, 0); | |
1109 | } | |
1110 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1111 | if (value && *value) { | |
1112 | vol->dir_mode = | |
1113 | simple_strtoul(value, &value, 0); | |
1114 | } | |
1115 | } else if (strnicmp(data, "port", 4) == 0) { | |
1116 | if (value && *value) { | |
1117 | vol->port = | |
1118 | simple_strtoul(value, &value, 0); | |
1119 | } | |
1120 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1121 | if (value && *value) { | |
1122 | vol->rsize = | |
1123 | simple_strtoul(value, &value, 0); | |
1124 | } | |
1125 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1126 | if (value && *value) { | |
1127 | vol->wsize = | |
1128 | simple_strtoul(value, &value, 0); | |
1129 | } | |
1130 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1131 | if (value && *value) { | |
1132 | vol->sockopt = | |
1133 | simple_strtoul(value, &value, 0); | |
1134 | } | |
1135 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1136 | if (!value || !*value || (*value == ' ')) { | |
63135e08 | 1137 | cFYI(1, ("invalid (empty) netbiosname")); |
1da177e4 | 1138 | } else { |
50c2f753 SF |
1139 | memset(vol->source_rfc1001_name, 0x20, 15); |
1140 | for (i = 0; i < 15; i++) { | |
1141 | /* BB are there cases in which a comma can be | |
1da177e4 LT |
1142 | valid in this workstation netbios name (and need |
1143 | special handling)? */ | |
1144 | ||
1145 | /* We do not uppercase netbiosname for user */ | |
50c2f753 | 1146 | if (value[i] == 0) |
1da177e4 | 1147 | break; |
50c2f753 SF |
1148 | else |
1149 | vol->source_rfc1001_name[i] = | |
1150 | value[i]; | |
1da177e4 LT |
1151 | } |
1152 | /* The string has 16th byte zero still from | |
1153 | set at top of the function */ | |
50c2f753 SF |
1154 | if ((i == 15) && (value[i] != 0)) |
1155 | printk(KERN_WARNING "CIFS: netbiosname" | |
1156 | " longer than 15 truncated.\n"); | |
a10faeb2 SF |
1157 | } |
1158 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1159 | /* servernetbiosname specified override *SMBSERVER */ | |
1160 | if (!value || !*value || (*value == ' ')) { | |
467a8f8d | 1161 | cFYI(1, ("empty server netbiosname specified")); |
a10faeb2 SF |
1162 | } else { |
1163 | /* last byte, type, is 0x20 for servr type */ | |
50c2f753 | 1164 | memset(vol->target_rfc1001_name, 0x20, 16); |
a10faeb2 | 1165 | |
50c2f753 | 1166 | for (i = 0; i < 15; i++) { |
a10faeb2 | 1167 | /* BB are there cases in which a comma can be |
50c2f753 SF |
1168 | valid in this workstation netbios name |
1169 | (and need special handling)? */ | |
a10faeb2 | 1170 | |
50c2f753 SF |
1171 | /* user or mount helper must uppercase |
1172 | the netbiosname */ | |
1173 | if (value[i] == 0) | |
a10faeb2 SF |
1174 | break; |
1175 | else | |
50c2f753 SF |
1176 | vol->target_rfc1001_name[i] = |
1177 | value[i]; | |
a10faeb2 SF |
1178 | } |
1179 | /* The string has 16th byte zero still from | |
1180 | set at top of the function */ | |
50c2f753 SF |
1181 | if ((i == 15) && (value[i] != 0)) |
1182 | printk(KERN_WARNING "CIFS: server net" | |
1183 | "biosname longer than 15 truncated.\n"); | |
1da177e4 LT |
1184 | } |
1185 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1186 | /* ignore */ | |
1187 | } else if (strnicmp(data, "version", 3) == 0) { | |
1188 | /* ignore */ | |
50c2f753 | 1189 | } else if (strnicmp(data, "guest", 5) == 0) { |
1da177e4 LT |
1190 | /* ignore */ |
1191 | } else if (strnicmp(data, "rw", 2) == 0) { | |
4b18f2a9 | 1192 | vol->rw = true; |
1da177e4 LT |
1193 | } else if ((strnicmp(data, "suid", 4) == 0) || |
1194 | (strnicmp(data, "nosuid", 6) == 0) || | |
1195 | (strnicmp(data, "exec", 4) == 0) || | |
1196 | (strnicmp(data, "noexec", 6) == 0) || | |
1197 | (strnicmp(data, "nodev", 5) == 0) || | |
1198 | (strnicmp(data, "noauto", 6) == 0) || | |
1199 | (strnicmp(data, "dev", 3) == 0)) { | |
1200 | /* The mount tool or mount.cifs helper (if present) | |
50c2f753 SF |
1201 | uses these opts to set flags, and the flags are read |
1202 | by the kernel vfs layer before we get here (ie | |
1203 | before read super) so there is no point trying to | |
1204 | parse these options again and set anything and it | |
1205 | is ok to just ignore them */ | |
1da177e4 LT |
1206 | continue; |
1207 | } else if (strnicmp(data, "ro", 2) == 0) { | |
4b18f2a9 | 1208 | vol->rw = false; |
1da177e4 LT |
1209 | } else if (strnicmp(data, "hard", 4) == 0) { |
1210 | vol->retry = 1; | |
1211 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1212 | vol->retry = 0; | |
1213 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1214 | vol->noperm = 0; | |
1215 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1216 | vol->noperm = 1; | |
6a0b4824 SF |
1217 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1218 | vol->remap = 1; | |
1219 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1220 | vol->remap = 0; | |
50c2f753 SF |
1221 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1222 | vol->sfu_emul = 1; | |
1223 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1224 | vol->sfu_emul = 0; | |
ac67055e JA |
1225 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1226 | vol->posix_paths = 1; | |
1227 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1228 | vol->posix_paths = 0; | |
c18c842b SF |
1229 | } else if (strnicmp(data, "nounix", 6) == 0) { |
1230 | vol->no_linux_ext = 1; | |
1231 | } else if (strnicmp(data, "nolinux", 7) == 0) { | |
1232 | vol->no_linux_ext = 1; | |
50c2f753 | 1233 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
a10faeb2 | 1234 | (strnicmp(data, "ignorecase", 10) == 0)) { |
50c2f753 | 1235 | vol->nocase = 1; |
c46fa8ac SF |
1236 | } else if (strnicmp(data, "brl", 3) == 0) { |
1237 | vol->nobrl = 0; | |
50c2f753 | 1238 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1239 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1240 | vol->nobrl = 1; |
d3485d37 SF |
1241 | /* turn off mandatory locking in mode |
1242 | if remote locking is turned off since the | |
1243 | local vfs will do advisory */ | |
50c2f753 SF |
1244 | if (vol->file_mode == |
1245 | (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
d3485d37 | 1246 | vol->file_mode = S_IALLUGO; |
1da177e4 LT |
1247 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1248 | vol->setuids = 1; | |
1249 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1250 | vol->setuids = 0; | |
d0a9c078 JL |
1251 | } else if (strnicmp(data, "dynperm", 7) == 0) { |
1252 | vol->dynperm = true; | |
1253 | } else if (strnicmp(data, "nodynperm", 9) == 0) { | |
1254 | vol->dynperm = false; | |
1da177e4 LT |
1255 | } else if (strnicmp(data, "nohard", 6) == 0) { |
1256 | vol->retry = 0; | |
1257 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1258 | vol->retry = 1; | |
1259 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1260 | vol->intr = 0; | |
1261 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1262 | vol->intr = 1; | |
50c2f753 | 1263 | } else if (strnicmp(data, "serverino", 7) == 0) { |
1da177e4 | 1264 | vol->server_ino = 1; |
50c2f753 | 1265 | } else if (strnicmp(data, "noserverino", 9) == 0) { |
1da177e4 | 1266 | vol->server_ino = 0; |
50c2f753 | 1267 | } else if (strnicmp(data, "cifsacl", 7) == 0) { |
0a4b92c0 SF |
1268 | vol->cifs_acl = 1; |
1269 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1270 | vol->cifs_acl = 0; | |
50c2f753 | 1271 | } else if (strnicmp(data, "acl", 3) == 0) { |
1da177e4 | 1272 | vol->no_psx_acl = 0; |
50c2f753 | 1273 | } else if (strnicmp(data, "noacl", 5) == 0) { |
1da177e4 | 1274 | vol->no_psx_acl = 1; |
50c2f753 | 1275 | } else if (strnicmp(data, "sign", 4) == 0) { |
750d1151 | 1276 | vol->secFlg |= CIFSSEC_MUST_SIGN; |
95b1cb90 SF |
1277 | } else if (strnicmp(data, "seal", 4) == 0) { |
1278 | /* we do not do the following in secFlags because seal | |
1279 | is a per tree connection (mount) not a per socket | |
1280 | or per-smb connection option in the protocol */ | |
1281 | /* vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
1282 | vol->seal = 1; | |
50c2f753 | 1283 | } else if (strnicmp(data, "direct", 6) == 0) { |
1da177e4 | 1284 | vol->direct_io = 1; |
50c2f753 | 1285 | } else if (strnicmp(data, "forcedirectio", 13) == 0) { |
1da177e4 | 1286 | vol->direct_io = 1; |
50c2f753 | 1287 | } else if (strnicmp(data, "in6_addr", 8) == 0) { |
1da177e4 LT |
1288 | if (!value || !*value) { |
1289 | vol->in6_addr = NULL; | |
1290 | } else if (strnlen(value, 49) == 48) { | |
1291 | vol->in6_addr = value; | |
1292 | } else { | |
50c2f753 SF |
1293 | printk(KERN_WARNING "CIFS: ip v6 address not " |
1294 | "48 characters long\n"); | |
1da177e4 LT |
1295 | return 1; |
1296 | } | |
1297 | } else if (strnicmp(data, "noac", 4) == 0) { | |
50c2f753 SF |
1298 | printk(KERN_WARNING "CIFS: Mount option noac not " |
1299 | "supported. Instead set " | |
1300 | "/proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1da177e4 | 1301 | } else |
50c2f753 SF |
1302 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n", |
1303 | data); | |
1da177e4 LT |
1304 | } |
1305 | if (vol->UNC == NULL) { | |
4523cc30 | 1306 | if (devname == NULL) { |
50c2f753 SF |
1307 | printk(KERN_WARNING "CIFS: Missing UNC name for mount " |
1308 | "target\n"); | |
1da177e4 LT |
1309 | return 1; |
1310 | } | |
1311 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
50c2f753 | 1312 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1313 | if (vol->UNC == NULL) |
1da177e4 | 1314 | return 1; |
50c2f753 | 1315 | strcpy(vol->UNC, devname); |
1da177e4 LT |
1316 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1317 | vol->UNC[0] = '\\'; | |
1318 | vol->UNC[1] = '\\'; | |
1319 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
50c2f753 SF |
1320 | printk(KERN_WARNING "CIFS: UNC Path does not " |
1321 | "begin with // or \\\\ \n"); | |
1da177e4 LT |
1322 | return 1; |
1323 | } | |
7c5e628f IM |
1324 | value = strpbrk(vol->UNC+2, "/\\"); |
1325 | if (value) | |
1326 | *value = '\\'; | |
1da177e4 LT |
1327 | } else { |
1328 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1329 | return 1; | |
1330 | } | |
1331 | } | |
fb8c4b14 | 1332 | if (vol->UNCip == NULL) |
1da177e4 LT |
1333 | vol->UNCip = &vol->UNC[2]; |
1334 | ||
1335 | return 0; | |
1336 | } | |
1337 | ||
1338 | static struct cifsSesInfo * | |
50c2f753 | 1339 | cifs_find_tcp_session(struct in_addr *target_ip_addr, |
1b20d672 CG |
1340 | struct in6_addr *target_ip6_addr, |
1341 | char *userName, struct TCP_Server_Info **psrvTcp) | |
1da177e4 LT |
1342 | { |
1343 | struct list_head *tmp; | |
1344 | struct cifsSesInfo *ses; | |
1b20d672 | 1345 | |
1da177e4 | 1346 | *psrvTcp = NULL; |
1da177e4 | 1347 | |
1b20d672 | 1348 | read_lock(&GlobalSMBSeslock); |
1da177e4 LT |
1349 | list_for_each(tmp, &GlobalSMBSessionList) { |
1350 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
1b20d672 CG |
1351 | if (!ses->server) |
1352 | continue; | |
1353 | ||
1354 | if (target_ip_addr && | |
1355 | ses->server->addr.sockAddr.sin_addr.s_addr != target_ip_addr->s_addr) | |
1356 | continue; | |
1357 | else if (target_ip6_addr && | |
1358 | memcmp(&ses->server->addr.sockAddr6.sin6_addr, | |
1359 | target_ip6_addr, sizeof(*target_ip6_addr))) | |
1360 | continue; | |
02eadeff | 1361 | /* BB lock server and tcp session; increment use count here?? */ |
1b20d672 CG |
1362 | |
1363 | /* found a match on the TCP session */ | |
1364 | *psrvTcp = ses->server; | |
1365 | ||
1366 | /* BB check if reconnection needed */ | |
1367 | if (strncmp(ses->userName, userName, MAX_USERNAME_SIZE) == 0) { | |
1368 | read_unlock(&GlobalSMBSeslock); | |
1369 | /* Found exact match on both TCP and | |
1370 | SMB sessions */ | |
1371 | return ses; | |
1da177e4 LT |
1372 | } |
1373 | /* else tcp and smb sessions need reconnection */ | |
1374 | } | |
1375 | read_unlock(&GlobalSMBSeslock); | |
1b20d672 | 1376 | |
1da177e4 LT |
1377 | return NULL; |
1378 | } | |
1379 | ||
1380 | static struct cifsTconInfo * | |
1381 | find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) | |
1382 | { | |
1383 | struct list_head *tmp; | |
1384 | struct cifsTconInfo *tcon; | |
dea570e0 | 1385 | __be32 old_ip; |
1da177e4 LT |
1386 | |
1387 | read_lock(&GlobalSMBSeslock); | |
dea570e0 | 1388 | |
1da177e4 | 1389 | list_for_each(tmp, &GlobalTreeConnectionList) { |
e466e487 | 1390 | cFYI(1, ("Next tcon")); |
1da177e4 | 1391 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); |
dea570e0 SF |
1392 | if (!tcon->ses || !tcon->ses->server) |
1393 | continue; | |
1394 | ||
1395 | old_ip = tcon->ses->server->addr.sockAddr.sin_addr.s_addr; | |
1396 | cFYI(1, ("old ip addr: %x == new ip %x ?", | |
1397 | old_ip, new_target_ip_addr)); | |
1398 | ||
1399 | if (old_ip != new_target_ip_addr) | |
1400 | continue; | |
1401 | ||
1402 | /* BB lock tcon, server, tcp session and increment use count? */ | |
1403 | /* found a match on the TCP session */ | |
1404 | /* BB check if reconnection needed */ | |
1405 | cFYI(1, ("IP match, old UNC: %s new: %s", | |
1406 | tcon->treeName, uncName)); | |
1407 | ||
1408 | if (strncmp(tcon->treeName, uncName, MAX_TREE_SIZE)) | |
1409 | continue; | |
1410 | ||
1411 | cFYI(1, ("and old usr: %s new: %s", | |
1412 | tcon->treeName, uncName)); | |
1413 | ||
1414 | if (strncmp(tcon->ses->userName, userName, MAX_USERNAME_SIZE)) | |
1415 | continue; | |
1416 | ||
1417 | /* matched smb session (user name) */ | |
1418 | read_unlock(&GlobalSMBSeslock); | |
1419 | return tcon; | |
1da177e4 | 1420 | } |
dea570e0 | 1421 | |
1da177e4 LT |
1422 | read_unlock(&GlobalSMBSeslock); |
1423 | return NULL; | |
1424 | } | |
1425 | ||
1da177e4 | 1426 | int |
50c2f753 SF |
1427 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, |
1428 | const struct nls_table *nls_codepage, unsigned int *pnum_referrals, | |
366781c1 | 1429 | struct dfs_info3_param **preferrals, int remap) |
1da177e4 LT |
1430 | { |
1431 | char *temp_unc; | |
1432 | int rc = 0; | |
1433 | ||
1434 | *pnum_referrals = 0; | |
366781c1 | 1435 | *preferrals = NULL; |
1da177e4 LT |
1436 | |
1437 | if (pSesInfo->ipc_tid == 0) { | |
1438 | temp_unc = kmalloc(2 /* for slashes */ + | |
50c2f753 SF |
1439 | strnlen(pSesInfo->serverName, |
1440 | SERVER_NAME_LEN_WITH_NULL * 2) | |
1da177e4 LT |
1441 | + 1 + 4 /* slash IPC$ */ + 2, |
1442 | GFP_KERNEL); | |
1443 | if (temp_unc == NULL) | |
1444 | return -ENOMEM; | |
1445 | temp_unc[0] = '\\'; | |
1446 | temp_unc[1] = '\\'; | |
1447 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1448 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1449 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1450 | cFYI(1, | |
50c2f753 | 1451 | ("CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid)); |
1da177e4 LT |
1452 | kfree(temp_unc); |
1453 | } | |
1454 | if (rc == 0) | |
c2cf07d5 | 1455 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, |
737b758c | 1456 | pnum_referrals, nls_codepage, remap); |
366781c1 SF |
1457 | /* BB map targetUNCs to dfs_info3 structures, here or |
1458 | in CIFSGetDFSRefer BB */ | |
1da177e4 LT |
1459 | |
1460 | return rc; | |
1461 | } | |
1462 | ||
1463 | /* See RFC1001 section 14 on representation of Netbios names */ | |
50c2f753 | 1464 | static void rfc1002mangle(char *target, char *source, unsigned int length) |
1da177e4 | 1465 | { |
50c2f753 | 1466 | unsigned int i, j; |
1da177e4 | 1467 | |
50c2f753 | 1468 | for (i = 0, j = 0; i < (length); i++) { |
1da177e4 LT |
1469 | /* mask a nibble at a time and encode */ |
1470 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1471 | target[j+1] = 'A' + (0x0F & source[i]); | |
50c2f753 | 1472 | j += 2; |
1da177e4 LT |
1473 | } |
1474 | ||
1475 | } | |
1476 | ||
1477 | ||
1478 | static int | |
50c2f753 SF |
1479 | ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, |
1480 | char *netbios_name, char *target_name) | |
1da177e4 LT |
1481 | { |
1482 | int rc = 0; | |
1483 | int connected = 0; | |
1484 | __be16 orig_port = 0; | |
1485 | ||
fb8c4b14 | 1486 | if (*csocket == NULL) { |
50c2f753 SF |
1487 | rc = sock_create_kern(PF_INET, SOCK_STREAM, |
1488 | IPPROTO_TCP, csocket); | |
1da177e4 | 1489 | if (rc < 0) { |
50c2f753 | 1490 | cERROR(1, ("Error %d creating socket", rc)); |
1da177e4 LT |
1491 | *csocket = NULL; |
1492 | return rc; | |
1493 | } else { | |
1494 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
467a8f8d | 1495 | cFYI(1, ("Socket created")); |
50c2f753 | 1496 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
1da177e4 LT |
1497 | } |
1498 | } | |
1499 | ||
1500 | psin_server->sin_family = AF_INET; | |
fb8c4b14 | 1501 | if (psin_server->sin_port) { /* user overrode default port */ |
1da177e4 LT |
1502 | rc = (*csocket)->ops->connect(*csocket, |
1503 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1504 | sizeof(struct sockaddr_in), 0); |
1da177e4 LT |
1505 | if (rc >= 0) |
1506 | connected = 1; | |
50c2f753 | 1507 | } |
1da177e4 | 1508 | |
fb8c4b14 | 1509 | if (!connected) { |
50c2f753 | 1510 | /* save original port so we can retry user specified port |
1da177e4 LT |
1511 | later if fall back ports fail this time */ |
1512 | orig_port = psin_server->sin_port; | |
1513 | ||
1514 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1515 | if (psin_server->sin_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1516 | psin_server->sin_port = htons(CIFS_PORT); |
1517 | ||
1518 | rc = (*csocket)->ops->connect(*csocket, | |
1519 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1520 | sizeof(struct sockaddr_in), 0); |
1da177e4 LT |
1521 | if (rc >= 0) |
1522 | connected = 1; | |
1523 | } | |
1524 | } | |
1525 | if (!connected) { | |
1526 | psin_server->sin_port = htons(RFC1001_PORT); | |
1527 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
50c2f753 | 1528 | psin_server, |
6345a3a8 | 1529 | sizeof(struct sockaddr_in), 0); |
50c2f753 | 1530 | if (rc >= 0) |
1da177e4 LT |
1531 | connected = 1; |
1532 | } | |
1533 | ||
1534 | /* give up here - unless we want to retry on different | |
1535 | protocol families some day */ | |
1536 | if (!connected) { | |
fb8c4b14 | 1537 | if (orig_port) |
1da177e4 | 1538 | psin_server->sin_port = orig_port; |
50c2f753 | 1539 | cFYI(1, ("Error %d connecting to server via ipv4", rc)); |
1da177e4 LT |
1540 | sock_release(*csocket); |
1541 | *csocket = NULL; | |
1542 | return rc; | |
1543 | } | |
50c2f753 SF |
1544 | /* Eventually check for other socket options to change from |
1545 | the default. sock_setsockopt not used because it expects | |
1da177e4 | 1546 | user space buffer */ |
50c2f753 SF |
1547 | cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", |
1548 | (*csocket)->sk->sk_sndbuf, | |
b387eaeb | 1549 | (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo)); |
1da177e4 | 1550 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; |
b387eaeb | 1551 | /* make the bufsizes depend on wsize/rsize and max requests */ |
fb8c4b14 | 1552 | if ((*csocket)->sk->sk_sndbuf < (200 * 1024)) |
b387eaeb | 1553 | (*csocket)->sk->sk_sndbuf = 200 * 1024; |
fb8c4b14 | 1554 | if ((*csocket)->sk->sk_rcvbuf < (140 * 1024)) |
b387eaeb | 1555 | (*csocket)->sk->sk_rcvbuf = 140 * 1024; |
1da177e4 LT |
1556 | |
1557 | /* send RFC1001 sessinit */ | |
fb8c4b14 | 1558 | if (psin_server->sin_port == htons(RFC1001_PORT)) { |
1da177e4 | 1559 | /* some servers require RFC1001 sessinit before sending |
50c2f753 | 1560 | negprot - BB check reconnection in case where second |
1da177e4 | 1561 | sessinit is sent but no second negprot */ |
50c2f753 SF |
1562 | struct rfc1002_session_packet *ses_init_buf; |
1563 | struct smb_hdr *smb_buf; | |
1564 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), | |
1565 | GFP_KERNEL); | |
fb8c4b14 | 1566 | if (ses_init_buf) { |
1da177e4 | 1567 | ses_init_buf->trailer.session_req.called_len = 32; |
fb8c4b14 | 1568 | if (target_name && (target_name[0] != 0)) { |
a10faeb2 SF |
1569 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, |
1570 | target_name, 16); | |
1571 | } else { | |
1572 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
50c2f753 | 1573 | DEFAULT_CIFS_CALLED_NAME, 16); |
a10faeb2 SF |
1574 | } |
1575 | ||
1da177e4 LT |
1576 | ses_init_buf->trailer.session_req.calling_len = 32; |
1577 | /* calling name ends in null (byte 16) from old smb | |
1578 | convention. */ | |
50c2f753 | 1579 | if (netbios_name && (netbios_name[0] != 0)) { |
1da177e4 | 1580 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, |
50c2f753 | 1581 | netbios_name, 16); |
1da177e4 LT |
1582 | } else { |
1583 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
50c2f753 | 1584 | "LINUX_CIFS_CLNT", 16); |
1da177e4 LT |
1585 | } |
1586 | ses_init_buf->trailer.session_req.scope1 = 0; | |
1587 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1588 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1589 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1590 | smb_buf->smb_buf_length = 0x81000044; | |
1591 | rc = smb_send(*csocket, smb_buf, 0x44, | |
1592 | (struct sockaddr *)psin_server); | |
1593 | kfree(ses_init_buf); | |
50c2f753 | 1594 | msleep(1); /* RFC1001 layer in at least one server |
083d3a2c SF |
1595 | requires very short break before negprot |
1596 | presumably because not expecting negprot | |
1597 | to follow so fast. This is a simple | |
50c2f753 | 1598 | solution that works without |
083d3a2c SF |
1599 | complicating the code and causes no |
1600 | significant slowing down on mount | |
1601 | for everyone else */ | |
1da177e4 | 1602 | } |
50c2f753 | 1603 | /* else the negprot may still work without this |
1da177e4 | 1604 | even though malloc failed */ |
50c2f753 | 1605 | |
1da177e4 | 1606 | } |
50c2f753 | 1607 | |
1da177e4 LT |
1608 | return rc; |
1609 | } | |
1610 | ||
1611 | static int | |
1612 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket) | |
1613 | { | |
1614 | int rc = 0; | |
1615 | int connected = 0; | |
1616 | __be16 orig_port = 0; | |
1617 | ||
fb8c4b14 | 1618 | if (*csocket == NULL) { |
50c2f753 SF |
1619 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, |
1620 | IPPROTO_TCP, csocket); | |
1da177e4 | 1621 | if (rc < 0) { |
50c2f753 | 1622 | cERROR(1, ("Error %d creating ipv6 socket", rc)); |
1da177e4 LT |
1623 | *csocket = NULL; |
1624 | return rc; | |
1625 | } else { | |
1626 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
fb8c4b14 | 1627 | cFYI(1, ("ipv6 Socket created")); |
1da177e4 LT |
1628 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
1629 | } | |
1630 | } | |
1631 | ||
1632 | psin_server->sin6_family = AF_INET6; | |
1633 | ||
fb8c4b14 | 1634 | if (psin_server->sin6_port) { /* user overrode default port */ |
1da177e4 LT |
1635 | rc = (*csocket)->ops->connect(*csocket, |
1636 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1637 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1638 | if (rc >= 0) |
1639 | connected = 1; | |
50c2f753 | 1640 | } |
1da177e4 | 1641 | |
fb8c4b14 | 1642 | if (!connected) { |
50c2f753 | 1643 | /* save original port so we can retry user specified port |
1da177e4 LT |
1644 | later if fall back ports fail this time */ |
1645 | ||
1646 | orig_port = psin_server->sin6_port; | |
1647 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1648 | if (psin_server->sin6_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1649 | psin_server->sin6_port = htons(CIFS_PORT); |
1650 | ||
1651 | rc = (*csocket)->ops->connect(*csocket, | |
1652 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1653 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1654 | if (rc >= 0) |
1655 | connected = 1; | |
1656 | } | |
1657 | } | |
1658 | if (!connected) { | |
1659 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1660 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
6345a3a8 | 1661 | psin_server, sizeof(struct sockaddr_in6), 0); |
50c2f753 | 1662 | if (rc >= 0) |
1da177e4 LT |
1663 | connected = 1; |
1664 | } | |
1665 | ||
1666 | /* give up here - unless we want to retry on different | |
1667 | protocol families some day */ | |
1668 | if (!connected) { | |
fb8c4b14 | 1669 | if (orig_port) |
1da177e4 | 1670 | psin_server->sin6_port = orig_port; |
50c2f753 | 1671 | cFYI(1, ("Error %d connecting to server via ipv6", rc)); |
1da177e4 LT |
1672 | sock_release(*csocket); |
1673 | *csocket = NULL; | |
1674 | return rc; | |
1675 | } | |
50c2f753 SF |
1676 | /* Eventually check for other socket options to change from |
1677 | the default. sock_setsockopt not used because it expects | |
1da177e4 LT |
1678 | user space buffer */ |
1679 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
50c2f753 | 1680 | |
1da177e4 LT |
1681 | return rc; |
1682 | } | |
1683 | ||
50c2f753 SF |
1684 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon, |
1685 | struct super_block *sb, struct smb_vol *vol_info) | |
8af18971 SF |
1686 | { |
1687 | /* if we are reconnecting then should we check to see if | |
1688 | * any requested capabilities changed locally e.g. via | |
1689 | * remount but we can not do much about it here | |
1690 | * if they have (even if we could detect it by the following) | |
1691 | * Perhaps we could add a backpointer to array of sb from tcon | |
1692 | * or if we change to make all sb to same share the same | |
1693 | * sb as NFS - then we only have one backpointer to sb. | |
1694 | * What if we wanted to mount the server share twice once with | |
1695 | * and once without posixacls or posix paths? */ | |
1696 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
50c2f753 | 1697 | |
c18c842b SF |
1698 | if (vol_info && vol_info->no_linux_ext) { |
1699 | tcon->fsUnixInfo.Capability = 0; | |
1700 | tcon->unix_ext = 0; /* Unix Extensions disabled */ | |
1701 | cFYI(1, ("Linux protocol extensions disabled")); | |
1702 | return; | |
1703 | } else if (vol_info) | |
1704 | tcon->unix_ext = 1; /* Unix Extensions supported */ | |
1705 | ||
1706 | if (tcon->unix_ext == 0) { | |
1707 | cFYI(1, ("Unix extensions disabled so not set on reconnect")); | |
1708 | return; | |
1709 | } | |
50c2f753 | 1710 | |
fb8c4b14 | 1711 | if (!CIFSSMBQFSUnixInfo(xid, tcon)) { |
8af18971 | 1712 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
50c2f753 | 1713 | |
8af18971 SF |
1714 | /* check for reconnect case in which we do not |
1715 | want to change the mount behavior if we can avoid it */ | |
fb8c4b14 | 1716 | if (vol_info == NULL) { |
50c2f753 | 1717 | /* turn off POSIX ACL and PATHNAMES if not set |
8af18971 SF |
1718 | originally at mount time */ |
1719 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) | |
1720 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
11b6d645 IM |
1721 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1722 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) | |
1723 | cERROR(1, ("POSIXPATH support change")); | |
8af18971 | 1724 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
11b6d645 IM |
1725 | } else if ((cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1726 | cERROR(1, ("possible reconnect error")); | |
1727 | cERROR(1, | |
1728 | ("server disabled POSIX path support")); | |
1729 | } | |
8af18971 | 1730 | } |
50c2f753 | 1731 | |
8af18971 | 1732 | cap &= CIFS_UNIX_CAP_MASK; |
75865f8c | 1733 | if (vol_info && vol_info->no_psx_acl) |
8af18971 | 1734 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
75865f8c | 1735 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
fb8c4b14 SF |
1736 | cFYI(1, ("negotiated posix acl support")); |
1737 | if (sb) | |
8af18971 SF |
1738 | sb->s_flags |= MS_POSIXACL; |
1739 | } | |
1740 | ||
75865f8c | 1741 | if (vol_info && vol_info->posix_paths == 0) |
8af18971 | 1742 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
75865f8c | 1743 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
fb8c4b14 | 1744 | cFYI(1, ("negotiate posix pathnames")); |
75865f8c | 1745 | if (sb) |
50c2f753 | 1746 | CIFS_SB(sb)->mnt_cifs_flags |= |
8af18971 SF |
1747 | CIFS_MOUNT_POSIX_PATHS; |
1748 | } | |
50c2f753 | 1749 | |
984acfe1 SF |
1750 | /* We might be setting the path sep back to a different |
1751 | form if we are reconnecting and the server switched its | |
50c2f753 | 1752 | posix path capability for this share */ |
75865f8c | 1753 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
984acfe1 | 1754 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
75865f8c SF |
1755 | |
1756 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { | |
1757 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { | |
1758 | CIFS_SB(sb)->rsize = 127 * 1024; | |
90c81e0b SF |
1759 | cFYI(DBG2, |
1760 | ("larger reads not supported by srv")); | |
75865f8c SF |
1761 | } |
1762 | } | |
50c2f753 SF |
1763 | |
1764 | ||
1765 | cFYI(1, ("Negotiate caps 0x%x", (int)cap)); | |
8af18971 | 1766 | #ifdef CONFIG_CIFS_DEBUG2 |
75865f8c | 1767 | if (cap & CIFS_UNIX_FCNTL_CAP) |
fb8c4b14 | 1768 | cFYI(1, ("FCNTL cap")); |
75865f8c | 1769 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
fb8c4b14 | 1770 | cFYI(1, ("EXTATTR cap")); |
75865f8c | 1771 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
fb8c4b14 | 1772 | cFYI(1, ("POSIX path cap")); |
75865f8c | 1773 | if (cap & CIFS_UNIX_XATTR_CAP) |
fb8c4b14 | 1774 | cFYI(1, ("XATTR cap")); |
75865f8c | 1775 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
fb8c4b14 | 1776 | cFYI(1, ("POSIX ACL cap")); |
75865f8c | 1777 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
fb8c4b14 | 1778 | cFYI(1, ("very large read cap")); |
75865f8c | 1779 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) |
fb8c4b14 | 1780 | cFYI(1, ("very large write cap")); |
8af18971 SF |
1781 | #endif /* CIFS_DEBUG2 */ |
1782 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
442aa310 | 1783 | if (vol_info == NULL) { |
5a44b319 | 1784 | cFYI(1, ("resetting capabilities failed")); |
442aa310 | 1785 | } else |
5a44b319 SF |
1786 | cERROR(1, ("Negotiating Unix capabilities " |
1787 | "with the server failed. Consider " | |
1788 | "mounting with the Unix Extensions\n" | |
1789 | "disabled, if problems are found, " | |
1790 | "by specifying the nounix mount " | |
2224f4e5 | 1791 | "option.")); |
5a44b319 | 1792 | |
8af18971 SF |
1793 | } |
1794 | } | |
1795 | } | |
1796 | ||
03a143c9 SF |
1797 | static void |
1798 | convert_delimiter(char *path, char delim) | |
1799 | { | |
1800 | int i; | |
c2d68ea6 | 1801 | char old_delim; |
03a143c9 SF |
1802 | |
1803 | if (path == NULL) | |
1804 | return; | |
1805 | ||
582d21e5 | 1806 | if (delim == '/') |
c2d68ea6 SF |
1807 | old_delim = '\\'; |
1808 | else | |
1809 | old_delim = '/'; | |
1810 | ||
03a143c9 | 1811 | for (i = 0; path[i] != '\0'; i++) { |
c2d68ea6 | 1812 | if (path[i] == old_delim) |
03a143c9 SF |
1813 | path[i] = delim; |
1814 | } | |
1815 | } | |
1816 | ||
1da177e4 LT |
1817 | int |
1818 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1819 | char *mount_data, const char *devname) | |
1820 | { | |
1821 | int rc = 0; | |
1822 | int xid; | |
1823 | int address_type = AF_INET; | |
1824 | struct socket *csocket = NULL; | |
1825 | struct sockaddr_in sin_server; | |
1826 | struct sockaddr_in6 sin_server6; | |
1827 | struct smb_vol volume_info; | |
1828 | struct cifsSesInfo *pSesInfo = NULL; | |
1829 | struct cifsSesInfo *existingCifsSes = NULL; | |
1830 | struct cifsTconInfo *tcon = NULL; | |
1831 | struct TCP_Server_Info *srvTcp = NULL; | |
1832 | ||
1833 | xid = GetXid(); | |
1834 | ||
1835 | /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ | |
50c2f753 SF |
1836 | |
1837 | memset(&volume_info, 0, sizeof(struct smb_vol)); | |
1da177e4 | 1838 | if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { |
70fe7dc0 JL |
1839 | rc = -EINVAL; |
1840 | goto out; | |
1da177e4 LT |
1841 | } |
1842 | ||
8426c39c | 1843 | if (volume_info.nullauth) { |
fb8c4b14 | 1844 | cFYI(1, ("null user")); |
9b8f5f57 | 1845 | volume_info.username = ""; |
8426c39c | 1846 | } else if (volume_info.username) { |
1da177e4 | 1847 | /* BB fixme parse for domain name here */ |
467a8f8d | 1848 | cFYI(1, ("Username: %s", volume_info.username)); |
1da177e4 | 1849 | } else { |
bf820679 | 1850 | cifserror("No username specified"); |
50c2f753 SF |
1851 | /* In userspace mount helper we can get user name from alternate |
1852 | locations such as env variables and files on disk */ | |
70fe7dc0 JL |
1853 | rc = -EINVAL; |
1854 | goto out; | |
1da177e4 LT |
1855 | } |
1856 | ||
1857 | if (volume_info.UNCip && volume_info.UNC) { | |
50c2f753 SF |
1858 | rc = cifs_inet_pton(AF_INET, volume_info.UNCip, |
1859 | &sin_server.sin_addr.s_addr); | |
1da177e4 | 1860 | |
fb8c4b14 | 1861 | if (rc <= 0) { |
1da177e4 | 1862 | /* not ipv4 address, try ipv6 */ |
50c2f753 SF |
1863 | rc = cifs_inet_pton(AF_INET6, volume_info.UNCip, |
1864 | &sin_server6.sin6_addr.in6_u); | |
fb8c4b14 | 1865 | if (rc > 0) |
1da177e4 LT |
1866 | address_type = AF_INET6; |
1867 | } else { | |
1868 | address_type = AF_INET; | |
1869 | } | |
50c2f753 | 1870 | |
fb8c4b14 | 1871 | if (rc <= 0) { |
1da177e4 | 1872 | /* we failed translating address */ |
70fe7dc0 JL |
1873 | rc = -EINVAL; |
1874 | goto out; | |
1da177e4 LT |
1875 | } |
1876 | ||
1877 | cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); | |
1878 | /* success */ | |
1879 | rc = 0; | |
50c2f753 SF |
1880 | } else if (volume_info.UNCip) { |
1881 | /* BB using ip addr as server name to connect to the | |
1882 | DFS root below */ | |
1883 | cERROR(1, ("Connecting to DFS root not implemented yet")); | |
70fe7dc0 JL |
1884 | rc = -EINVAL; |
1885 | goto out; | |
1da177e4 LT |
1886 | } else /* which servers DFS root would we conect to */ { |
1887 | cERROR(1, | |
50c2f753 SF |
1888 | ("CIFS mount error: No UNC path (e.g. -o " |
1889 | "unc=//192.168.1.100/public) specified")); | |
70fe7dc0 JL |
1890 | rc = -EINVAL; |
1891 | goto out; | |
1da177e4 LT |
1892 | } |
1893 | ||
1894 | /* this is needed for ASCII cp to Unicode converts */ | |
fb8c4b14 | 1895 | if (volume_info.iocharset == NULL) { |
1da177e4 LT |
1896 | cifs_sb->local_nls = load_nls_default(); |
1897 | /* load_nls_default can not return null */ | |
1898 | } else { | |
1899 | cifs_sb->local_nls = load_nls(volume_info.iocharset); | |
fb8c4b14 | 1900 | if (cifs_sb->local_nls == NULL) { |
50c2f753 SF |
1901 | cERROR(1, ("CIFS mount error: iocharset %s not found", |
1902 | volume_info.iocharset)); | |
70fe7dc0 JL |
1903 | rc = -ELIBACC; |
1904 | goto out; | |
1da177e4 LT |
1905 | } |
1906 | } | |
1907 | ||
fb8c4b14 | 1908 | if (address_type == AF_INET) |
1da177e4 LT |
1909 | existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr, |
1910 | NULL /* no ipv6 addr */, | |
1911 | volume_info.username, &srvTcp); | |
fb8c4b14 SF |
1912 | else if (address_type == AF_INET6) { |
1913 | cFYI(1, ("looking for ipv6 address")); | |
1da177e4 LT |
1914 | existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */, |
1915 | &sin_server6.sin6_addr, | |
1916 | volume_info.username, &srvTcp); | |
5858ae44 | 1917 | } else { |
70fe7dc0 JL |
1918 | rc = -EINVAL; |
1919 | goto out; | |
1da177e4 LT |
1920 | } |
1921 | ||
1da177e4 | 1922 | if (srvTcp) { |
50c2f753 | 1923 | cFYI(1, ("Existing tcp session with server found")); |
1da177e4 | 1924 | } else { /* create socket */ |
4523cc30 | 1925 | if (volume_info.port) |
1da177e4 LT |
1926 | sin_server.sin_port = htons(volume_info.port); |
1927 | else | |
1928 | sin_server.sin_port = 0; | |
5858ae44 | 1929 | if (address_type == AF_INET6) { |
fb8c4b14 | 1930 | cFYI(1, ("attempting ipv6 connect")); |
5858ae44 SF |
1931 | /* BB should we allow ipv6 on port 139? */ |
1932 | /* other OS never observed in Wild doing 139 with v6 */ | |
50c2f753 SF |
1933 | rc = ipv6_connect(&sin_server6, &csocket); |
1934 | } else | |
1935 | rc = ipv4_connect(&sin_server, &csocket, | |
a10faeb2 SF |
1936 | volume_info.source_rfc1001_name, |
1937 | volume_info.target_rfc1001_name); | |
1da177e4 | 1938 | if (rc < 0) { |
50c2f753 SF |
1939 | cERROR(1, ("Error connecting to IPv4 socket. " |
1940 | "Aborting operation")); | |
4523cc30 | 1941 | if (csocket != NULL) |
1da177e4 | 1942 | sock_release(csocket); |
70fe7dc0 | 1943 | goto out; |
1da177e4 LT |
1944 | } |
1945 | ||
a8a11d39 MK |
1946 | srvTcp = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); |
1947 | if (!srvTcp) { | |
1da177e4 LT |
1948 | rc = -ENOMEM; |
1949 | sock_release(csocket); | |
70fe7dc0 | 1950 | goto out; |
1da177e4 | 1951 | } else { |
50c2f753 | 1952 | memcpy(&srvTcp->addr.sockAddr, &sin_server, |
6345a3a8 | 1953 | sizeof(struct sockaddr_in)); |
50c2f753 | 1954 | atomic_set(&srvTcp->inFlight, 0); |
1da177e4 LT |
1955 | /* BB Add code for ipv6 case too */ |
1956 | srvTcp->ssocket = csocket; | |
1957 | srvTcp->protocolType = IPV4; | |
c359cf3c JL |
1958 | srvTcp->hostname = extract_hostname(volume_info.UNC); |
1959 | if (IS_ERR(srvTcp->hostname)) { | |
1960 | rc = PTR_ERR(srvTcp->hostname); | |
1961 | sock_release(csocket); | |
1962 | goto out; | |
1963 | } | |
1da177e4 LT |
1964 | init_waitqueue_head(&srvTcp->response_q); |
1965 | init_waitqueue_head(&srvTcp->request_q); | |
1966 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
1967 | /* at this point we are the only ones with the pointer | |
1968 | to the struct since the kernel thread not created yet | |
1969 | so no need to spinlock this init of tcpStatus */ | |
1970 | srvTcp->tcpStatus = CifsNew; | |
1971 | init_MUTEX(&srvTcp->tcpSem); | |
aaf737ad | 1972 | srvTcp->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, srvTcp, "cifsd"); |
8840dee9 | 1973 | if (IS_ERR(srvTcp->tsk)) { |
aaf737ad | 1974 | rc = PTR_ERR(srvTcp->tsk); |
50c2f753 | 1975 | cERROR(1, ("error %d create cifsd thread", rc)); |
aaf737ad | 1976 | srvTcp->tsk = NULL; |
1da177e4 | 1977 | sock_release(csocket); |
c359cf3c | 1978 | kfree(srvTcp->hostname); |
70fe7dc0 | 1979 | goto out; |
f191401f | 1980 | } |
f191401f | 1981 | rc = 0; |
50c2f753 SF |
1982 | memcpy(srvTcp->workstation_RFC1001_name, |
1983 | volume_info.source_rfc1001_name, 16); | |
1984 | memcpy(srvTcp->server_RFC1001_name, | |
1985 | volume_info.target_rfc1001_name, 16); | |
ad009ac9 | 1986 | srvTcp->sequence_number = 0; |
1da177e4 LT |
1987 | } |
1988 | } | |
1989 | ||
1990 | if (existingCifsSes) { | |
1991 | pSesInfo = existingCifsSes; | |
1d9a8852 JL |
1992 | cFYI(1, ("Existing smb sess found (status=%d)", |
1993 | pSesInfo->status)); | |
88e7d705 | 1994 | down(&pSesInfo->sesSem); |
1d9a8852 JL |
1995 | if (pSesInfo->status == CifsNeedReconnect) { |
1996 | cFYI(1, ("Session needs reconnect")); | |
1d9a8852 JL |
1997 | rc = cifs_setup_session(xid, pSesInfo, |
1998 | cifs_sb->local_nls); | |
1d9a8852 | 1999 | } |
88e7d705 | 2000 | up(&pSesInfo->sesSem); |
1da177e4 | 2001 | } else if (!rc) { |
bf820679 | 2002 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 LT |
2003 | pSesInfo = sesInfoAlloc(); |
2004 | if (pSesInfo == NULL) | |
2005 | rc = -ENOMEM; | |
2006 | else { | |
2007 | pSesInfo->server = srvTcp; | |
2008 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
2009 | NIPQUAD(sin_server.sin_addr.s_addr)); | |
2010 | } | |
2011 | ||
50c2f753 SF |
2012 | if (!rc) { |
2013 | /* volume_info.password freed at unmount */ | |
70fe7dc0 | 2014 | if (volume_info.password) { |
1da177e4 | 2015 | pSesInfo->password = volume_info.password; |
70fe7dc0 JL |
2016 | /* set to NULL to prevent freeing on exit */ |
2017 | volume_info.password = NULL; | |
2018 | } | |
1da177e4 LT |
2019 | if (volume_info.username) |
2020 | strncpy(pSesInfo->userName, | |
50c2f753 SF |
2021 | volume_info.username, |
2022 | MAX_USERNAME_SIZE); | |
3979877e SF |
2023 | if (volume_info.domainname) { |
2024 | int len = strlen(volume_info.domainname); | |
50c2f753 | 2025 | pSesInfo->domainName = |
3979877e | 2026 | kmalloc(len + 1, GFP_KERNEL); |
4523cc30 | 2027 | if (pSesInfo->domainName) |
3979877e SF |
2028 | strcpy(pSesInfo->domainName, |
2029 | volume_info.domainname); | |
2030 | } | |
1da177e4 | 2031 | pSesInfo->linux_uid = volume_info.linux_uid; |
750d1151 | 2032 | pSesInfo->overrideSecFlg = volume_info.secFlg; |
1da177e4 | 2033 | down(&pSesInfo->sesSem); |
189acaae | 2034 | /* BB FIXME need to pass vol->secFlgs BB */ |
50c2f753 SF |
2035 | rc = cifs_setup_session(xid, pSesInfo, |
2036 | cifs_sb->local_nls); | |
1da177e4 | 2037 | up(&pSesInfo->sesSem); |
4523cc30 | 2038 | if (!rc) |
1da177e4 | 2039 | atomic_inc(&srvTcp->socketUseCount); |
70fe7dc0 | 2040 | } |
1da177e4 | 2041 | } |
50c2f753 | 2042 | |
1da177e4 LT |
2043 | /* search for existing tcon to this server share */ |
2044 | if (!rc) { | |
4523cc30 | 2045 | if (volume_info.rsize > CIFSMaxBufSize) { |
50c2f753 | 2046 | cERROR(1, ("rsize %d too large, using MaxBufSize", |
0ae0efad SF |
2047 | volume_info.rsize)); |
2048 | cifs_sb->rsize = CIFSMaxBufSize; | |
75865f8c SF |
2049 | } else if ((volume_info.rsize) && |
2050 | (volume_info.rsize <= CIFSMaxBufSize)) | |
1da177e4 | 2051 | cifs_sb->rsize = volume_info.rsize; |
0ae0efad SF |
2052 | else /* default */ |
2053 | cifs_sb->rsize = CIFSMaxBufSize; | |
2054 | ||
4523cc30 | 2055 | if (volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { |
50c2f753 | 2056 | cERROR(1, ("wsize %d too large, using 4096 instead", |
0ae0efad SF |
2057 | volume_info.wsize)); |
2058 | cifs_sb->wsize = 4096; | |
4523cc30 | 2059 | } else if (volume_info.wsize) |
1da177e4 LT |
2060 | cifs_sb->wsize = volume_info.wsize; |
2061 | else | |
50c2f753 | 2062 | cifs_sb->wsize = |
1877c9ea SF |
2063 | min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE, |
2064 | 127*1024); | |
17cbbafe | 2065 | /* old default of CIFSMaxBufSize was too small now |
50c2f753 | 2066 | that SMB Write2 can send multiple pages in kvec. |
17cbbafe SF |
2067 | RFC1001 does not describe what happens when frame |
2068 | bigger than 128K is sent so use that as max in | |
2069 | conjunction with 52K kvec constraint on arch with 4K | |
2070 | page size */ | |
2071 | ||
4523cc30 | 2072 | if (cifs_sb->rsize < 2048) { |
50c2f753 | 2073 | cifs_sb->rsize = 2048; |
6cec2aed | 2074 | /* Windows ME may prefer this */ |
467a8f8d | 2075 | cFYI(1, ("readsize set to minimum: 2048")); |
1da177e4 | 2076 | } |
2fe87f02 SF |
2077 | /* calculate prepath */ |
2078 | cifs_sb->prepath = volume_info.prepath; | |
4523cc30 | 2079 | if (cifs_sb->prepath) { |
2fe87f02 | 2080 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); |
03a143c9 SF |
2081 | /* we can not convert the / to \ in the path |
2082 | separators in the prefixpath yet because we do not | |
2083 | know (until reset_cifs_unix_caps is called later) | |
2084 | whether POSIX PATH CAP is available. We normalize | |
2085 | the / to \ after reset_cifs_unix_caps is called */ | |
2fe87f02 | 2086 | volume_info.prepath = NULL; |
50c2f753 | 2087 | } else |
2fe87f02 | 2088 | cifs_sb->prepathlen = 0; |
1da177e4 LT |
2089 | cifs_sb->mnt_uid = volume_info.linux_uid; |
2090 | cifs_sb->mnt_gid = volume_info.linux_gid; | |
2091 | cifs_sb->mnt_file_mode = volume_info.file_mode; | |
2092 | cifs_sb->mnt_dir_mode = volume_info.dir_mode; | |
467a8f8d SF |
2093 | cFYI(1, ("file mode: 0x%x dir mode: 0x%x", |
2094 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode)); | |
1da177e4 | 2095 | |
4523cc30 | 2096 | if (volume_info.noperm) |
1da177e4 | 2097 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; |
4523cc30 | 2098 | if (volume_info.setuids) |
1da177e4 | 2099 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; |
4523cc30 | 2100 | if (volume_info.server_ino) |
1da177e4 | 2101 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; |
4523cc30 | 2102 | if (volume_info.remap) |
6a0b4824 | 2103 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; |
4523cc30 | 2104 | if (volume_info.no_xattr) |
1da177e4 | 2105 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; |
4523cc30 | 2106 | if (volume_info.sfu_emul) |
d7245c2c | 2107 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; |
4523cc30 | 2108 | if (volume_info.nobrl) |
c46fa8ac | 2109 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; |
4523cc30 | 2110 | if (volume_info.cifs_acl) |
0a4b92c0 | 2111 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; |
4523cc30 SF |
2112 | if (volume_info.override_uid) |
2113 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; | |
2114 | if (volume_info.override_gid) | |
2115 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; | |
d0a9c078 JL |
2116 | if (volume_info.dynperm) |
2117 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM; | |
4523cc30 | 2118 | if (volume_info.direct_io) { |
467a8f8d | 2119 | cFYI(1, ("mounting share using direct i/o")); |
1da177e4 LT |
2120 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
2121 | } | |
2122 | ||
2123 | tcon = | |
2124 | find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, | |
2125 | volume_info.username); | |
2126 | if (tcon) { | |
bf820679 | 2127 | cFYI(1, ("Found match on UNC path")); |
1da177e4 LT |
2128 | /* we can have only one retry value for a connection |
2129 | to a share so for resources mounted more than once | |
50c2f753 | 2130 | to the same server share the last value passed in |
1da177e4 LT |
2131 | for the retry flag is used */ |
2132 | tcon->retry = volume_info.retry; | |
d3485d37 | 2133 | tcon->nocase = volume_info.nocase; |
95b1cb90 SF |
2134 | if (tcon->seal != volume_info.seal) |
2135 | cERROR(1, ("transport encryption setting " | |
2136 | "conflicts with existing tid")); | |
1da177e4 LT |
2137 | } else { |
2138 | tcon = tconInfoAlloc(); | |
2139 | if (tcon == NULL) | |
2140 | rc = -ENOMEM; | |
2141 | else { | |
50c2f753 | 2142 | /* check for null share name ie connecting to |
8af18971 | 2143 | * dfs root */ |
1da177e4 | 2144 | |
50c2f753 | 2145 | /* BB check if this works for exactly length |
8af18971 | 2146 | * three strings */ |
1da177e4 LT |
2147 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) |
2148 | && (strchr(volume_info.UNC + 3, '/') == | |
2149 | NULL)) { | |
646dd539 | 2150 | /* rc = connect_to_dfs_path(xid, pSesInfo, |
8af18971 | 2151 | "", cifs_sb->local_nls, |
50c2f753 | 2152 | cifs_sb->mnt_cifs_flags & |
646dd539 SF |
2153 | CIFS_MOUNT_MAP_SPECIAL_CHR);*/ |
2154 | cFYI(1, ("DFS root not supported")); | |
70fe7dc0 JL |
2155 | rc = -ENODEV; |
2156 | goto out; | |
1da177e4 | 2157 | } else { |
8af18971 SF |
2158 | /* BB Do we need to wrap sesSem around |
2159 | * this TCon call and Unix SetFS as | |
2160 | * we do on SessSetup and reconnect? */ | |
50c2f753 | 2161 | rc = CIFSTCon(xid, pSesInfo, |
1da177e4 LT |
2162 | volume_info.UNC, |
2163 | tcon, cifs_sb->local_nls); | |
2164 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
2165 | } | |
2166 | if (!rc) { | |
2167 | atomic_inc(&pSesInfo->inUse); | |
2168 | tcon->retry = volume_info.retry; | |
d3485d37 | 2169 | tcon->nocase = volume_info.nocase; |
95b1cb90 | 2170 | tcon->seal = volume_info.seal; |
1da177e4 LT |
2171 | } |
2172 | } | |
2173 | } | |
2174 | } | |
4523cc30 | 2175 | if (pSesInfo) { |
1da177e4 LT |
2176 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
2177 | sb->s_maxbytes = (u64) 1 << 63; | |
2178 | } else | |
2179 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
2180 | } | |
2181 | ||
8af18971 | 2182 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
1da177e4 LT |
2183 | sb->s_time_gran = 100; |
2184 | ||
2185 | /* on error free sesinfo and tcon struct if needed */ | |
2186 | if (rc) { | |
2187 | /* if session setup failed, use count is zero but | |
2188 | we still need to free cifsd thread */ | |
4523cc30 | 2189 | if (atomic_read(&srvTcp->socketUseCount) == 0) { |
1da177e4 LT |
2190 | spin_lock(&GlobalMid_Lock); |
2191 | srvTcp->tcpStatus = CifsExiting; | |
2192 | spin_unlock(&GlobalMid_Lock); | |
4523cc30 | 2193 | if (srvTcp->tsk) { |
28356a16 SF |
2194 | /* If we could verify that kthread_stop would |
2195 | always wake up processes blocked in | |
2196 | tcp in recv_mesg then we could remove the | |
2197 | send_sig call */ | |
50c2f753 | 2198 | force_sig(SIGKILL, srvTcp->tsk); |
e691b9d1 | 2199 | kthread_stop(srvTcp->tsk); |
f191401f | 2200 | } |
1da177e4 LT |
2201 | } |
2202 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
2203 | if (tcon) /* up accidently freeing someone elses tcon struct */ | |
2204 | tconInfoFree(tcon); | |
2205 | if (existingCifsSes == NULL) { | |
2206 | if (pSesInfo) { | |
50c2f753 | 2207 | if ((pSesInfo->server) && |
1da177e4 LT |
2208 | (pSesInfo->status == CifsGood)) { |
2209 | int temp_rc; | |
2210 | temp_rc = CIFSSMBLogoff(xid, pSesInfo); | |
2211 | /* if the socketUseCount is now zero */ | |
4523cc30 | 2212 | if ((temp_rc == -ESHUTDOWN) && |
50c2f753 | 2213 | (pSesInfo->server) && |
5d9c7206 | 2214 | (pSesInfo->server->tsk)) { |
5d9c7206 J |
2215 | force_sig(SIGKILL, |
2216 | pSesInfo->server->tsk); | |
e691b9d1 | 2217 | kthread_stop(pSesInfo->server->tsk); |
f191401f | 2218 | } |
a013689d | 2219 | } else { |
1da177e4 | 2220 | cFYI(1, ("No session or bad tcon")); |
a013689d SF |
2221 | if ((pSesInfo->server) && |
2222 | (pSesInfo->server->tsk)) { | |
a013689d SF |
2223 | force_sig(SIGKILL, |
2224 | pSesInfo->server->tsk); | |
e691b9d1 | 2225 | kthread_stop(pSesInfo->server->tsk); |
a013689d SF |
2226 | } |
2227 | } | |
1da177e4 LT |
2228 | sesInfoFree(pSesInfo); |
2229 | /* pSesInfo = NULL; */ | |
2230 | } | |
2231 | } | |
2232 | } else { | |
2233 | atomic_inc(&tcon->useCount); | |
2234 | cifs_sb->tcon = tcon; | |
2235 | tcon->ses = pSesInfo; | |
2236 | ||
82940a46 | 2237 | /* do not care if following two calls succeed - informational */ |
7f8ed420 SF |
2238 | if (!tcon->ipc) { |
2239 | CIFSSMBQFSDeviceInfo(xid, tcon); | |
2240 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
2241 | } | |
50c2f753 | 2242 | |
8af18971 SF |
2243 | /* tell server which Unix caps we support */ |
2244 | if (tcon->ses->capabilities & CAP_UNIX) | |
c18c842b SF |
2245 | /* reset of caps checks mount to see if unix extensions |
2246 | disabled for just this mount */ | |
8af18971 | 2247 | reset_cifs_unix_caps(xid, tcon, sb, &volume_info); |
c18c842b SF |
2248 | else |
2249 | tcon->unix_ext = 0; /* server does not support them */ | |
2250 | ||
03a143c9 | 2251 | /* convert forward to back slashes in prepath here if needed */ |
11b6d645 IM |
2252 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0) |
2253 | convert_delimiter(cifs_sb->prepath, | |
2254 | CIFS_DIR_SEP(cifs_sb)); | |
03a143c9 | 2255 | |
c18c842b | 2256 | if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) { |
75865f8c | 2257 | cifs_sb->rsize = 1024 * 127; |
90c81e0b SF |
2258 | cFYI(DBG2, |
2259 | ("no very large read support, rsize now 127K")); | |
75865f8c | 2260 | } |
3e84469d SF |
2261 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
2262 | cifs_sb->wsize = min(cifs_sb->wsize, | |
2263 | (tcon->ses->server->maxBuf - | |
2264 | MAX_CIFS_HDR_SIZE)); | |
0ae0efad | 2265 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
50c2f753 SF |
2266 | cifs_sb->rsize = min(cifs_sb->rsize, |
2267 | (tcon->ses->server->maxBuf - | |
2268 | MAX_CIFS_HDR_SIZE)); | |
1da177e4 LT |
2269 | } |
2270 | ||
2271 | /* volume_info.password is freed above when existing session found | |
2272 | (in which case it is not needed anymore) but when new sesion is created | |
2273 | the password ptr is put in the new session structure (in which case the | |
2274 | password will be freed at unmount time) */ | |
70fe7dc0 JL |
2275 | out: |
2276 | /* zero out password before freeing */ | |
2277 | if (volume_info.password != NULL) { | |
2278 | memset(volume_info.password, 0, strlen(volume_info.password)); | |
2279 | kfree(volume_info.password); | |
2280 | } | |
f99d49ad | 2281 | kfree(volume_info.UNC); |
2fe87f02 | 2282 | kfree(volume_info.prepath); |
1da177e4 LT |
2283 | FreeXid(xid); |
2284 | return rc; | |
2285 | } | |
2286 | ||
2287 | static int | |
2288 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 2289 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
2290 | const struct nls_table *nls_codepage) |
2291 | { | |
2292 | struct smb_hdr *smb_buffer; | |
2293 | struct smb_hdr *smb_buffer_response; | |
2294 | SESSION_SETUP_ANDX *pSMB; | |
2295 | SESSION_SETUP_ANDX *pSMBr; | |
2296 | char *bcc_ptr; | |
2297 | char *user; | |
2298 | char *domain; | |
2299 | int rc = 0; | |
2300 | int remaining_words = 0; | |
2301 | int bytes_returned = 0; | |
2302 | int len; | |
2303 | __u32 capabilities; | |
2304 | __u16 count; | |
2305 | ||
eeac8047 | 2306 | cFYI(1, ("In sesssetup")); |
4523cc30 | 2307 | if (ses == NULL) |
1da177e4 LT |
2308 | return -EINVAL; |
2309 | user = ses->userName; | |
2310 | domain = ses->domainName; | |
2311 | smb_buffer = cifs_buf_get(); | |
582d21e5 SF |
2312 | |
2313 | if (smb_buffer == NULL) | |
1da177e4 | 2314 | return -ENOMEM; |
582d21e5 | 2315 | |
1da177e4 LT |
2316 | smb_buffer_response = smb_buffer; |
2317 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2318 | ||
2319 | /* send SMBsessionSetup here */ | |
2320 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2321 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2322 | ||
1982c344 | 2323 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2324 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2325 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2326 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2327 | ||
50c2f753 SF |
2328 | if (ses->server->secMode & |
2329 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
2330 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2331 | ||
2332 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2333 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2334 | if (ses->capabilities & CAP_UNICODE) { | |
2335 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2336 | capabilities |= CAP_UNICODE; | |
2337 | } | |
2338 | if (ses->capabilities & CAP_STATUS32) { | |
2339 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2340 | capabilities |= CAP_STATUS32; | |
2341 | } | |
2342 | if (ses->capabilities & CAP_DFS) { | |
2343 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2344 | capabilities |= CAP_DFS; | |
2345 | } | |
2346 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2347 | ||
50c2f753 | 2348 | pSMB->req_no_secext.CaseInsensitivePasswordLength = |
7c7b25bc | 2349 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2350 | |
2351 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2352 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2353 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2354 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2355 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2356 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2357 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2358 | |
2359 | if (ses->capabilities & CAP_UNICODE) { | |
2360 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2361 | *bcc_ptr = 0; | |
2362 | bcc_ptr++; | |
2363 | } | |
4523cc30 | 2364 | if (user == NULL) |
3979877e | 2365 | bytes_returned = 0; /* skip null user */ |
50c2f753 | 2366 | else |
1da177e4 | 2367 | bytes_returned = |
50c2f753 | 2368 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2369 | nls_codepage); |
2370 | /* convert number of 16 bit words to bytes */ | |
2371 | bcc_ptr += 2 * bytes_returned; | |
2372 | bcc_ptr += 2; /* trailing null */ | |
2373 | if (domain == NULL) | |
2374 | bytes_returned = | |
e89dc920 | 2375 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2376 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2377 | else | |
2378 | bytes_returned = | |
e89dc920 | 2379 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2380 | nls_codepage); |
2381 | bcc_ptr += 2 * bytes_returned; | |
2382 | bcc_ptr += 2; | |
2383 | bytes_returned = | |
e89dc920 | 2384 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2385 | 32, nls_codepage); |
2386 | bcc_ptr += 2 * bytes_returned; | |
2387 | bytes_returned = | |
e9ff3990 | 2388 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, |
1da177e4 LT |
2389 | 32, nls_codepage); |
2390 | bcc_ptr += 2 * bytes_returned; | |
2391 | bcc_ptr += 2; | |
2392 | bytes_returned = | |
e89dc920 | 2393 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2394 | 64, nls_codepage); |
2395 | bcc_ptr += 2 * bytes_returned; | |
2396 | bcc_ptr += 2; | |
2397 | } else { | |
50c2f753 | 2398 | if (user != NULL) { |
1da177e4 LT |
2399 | strncpy(bcc_ptr, user, 200); |
2400 | bcc_ptr += strnlen(user, 200); | |
2401 | } | |
2402 | *bcc_ptr = 0; | |
2403 | bcc_ptr++; | |
2404 | if (domain == NULL) { | |
2405 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2406 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2407 | } else { | |
2408 | strncpy(bcc_ptr, domain, 64); | |
2409 | bcc_ptr += strnlen(domain, 64); | |
2410 | *bcc_ptr = 0; | |
2411 | bcc_ptr++; | |
2412 | } | |
2413 | strcpy(bcc_ptr, "Linux version "); | |
2414 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2415 | strcpy(bcc_ptr, utsname()->release); |
2416 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2417 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2418 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2419 | } | |
2420 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2421 | smb_buffer->smb_buf_length += count; | |
2422 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2423 | ||
2424 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2425 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2426 | if (rc) { |
2427 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2428 | } else if ((smb_buffer_response->WordCount == 3) | |
2429 | || (smb_buffer_response->WordCount == 4)) { | |
2430 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2431 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2432 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2433 | cFYI(1, (" Guest login")); /* BB mark SesInfo struct? */ |
2434 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format | |
2435 | (little endian) */ | |
1da177e4 | 2436 | cFYI(1, ("UID = %d ", ses->Suid)); |
50c2f753 SF |
2437 | /* response can have either 3 or 4 word count - Samba sends 3 */ |
2438 | bcc_ptr = pByteArea(smb_buffer_response); | |
1da177e4 LT |
2439 | if ((pSMBr->resp.hdr.WordCount == 3) |
2440 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2441 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2442 | if (pSMBr->resp.hdr.WordCount == 4) | |
2443 | bcc_ptr += blob_len; | |
2444 | ||
2445 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2446 | if ((long) (bcc_ptr) % 2) { | |
2447 | remaining_words = | |
50c2f753 SF |
2448 | (BCC(smb_buffer_response) - 1) / 2; |
2449 | /* Unicode strings must be word | |
2450 | aligned */ | |
2451 | bcc_ptr++; | |
1da177e4 LT |
2452 | } else { |
2453 | remaining_words = | |
2454 | BCC(smb_buffer_response) / 2; | |
2455 | } | |
2456 | len = | |
2457 | UniStrnlen((wchar_t *) bcc_ptr, | |
2458 | remaining_words - 1); | |
2459 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2460 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2461 | terminating last Unicode string in response */ | |
fb8c4b14 | 2462 | if (ses->serverOS) |
a424f8bf | 2463 | kfree(ses->serverOS); |
50c2f753 SF |
2464 | ses->serverOS = kzalloc(2 * (len + 1), |
2465 | GFP_KERNEL); | |
fb8c4b14 | 2466 | if (ses->serverOS == NULL) |
433dc24f | 2467 | goto sesssetup_nomem; |
1da177e4 | 2468 | cifs_strfromUCS_le(ses->serverOS, |
50c2f753 SF |
2469 | (__le16 *)bcc_ptr, |
2470 | len, nls_codepage); | |
1da177e4 LT |
2471 | bcc_ptr += 2 * (len + 1); |
2472 | remaining_words -= len + 1; | |
2473 | ses->serverOS[2 * len] = 0; | |
2474 | ses->serverOS[1 + (2 * len)] = 0; | |
2475 | if (remaining_words > 0) { | |
2476 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2477 | remaining_words-1); | |
cd49b492 | 2478 | kfree(ses->serverNOS); |
50c2f753 SF |
2479 | ses->serverNOS = kzalloc(2 * (len + 1), |
2480 | GFP_KERNEL); | |
fb8c4b14 | 2481 | if (ses->serverNOS == NULL) |
433dc24f | 2482 | goto sesssetup_nomem; |
1da177e4 | 2483 | cifs_strfromUCS_le(ses->serverNOS, |
50c2f753 SF |
2484 | (__le16 *)bcc_ptr, |
2485 | len, nls_codepage); | |
1da177e4 LT |
2486 | bcc_ptr += 2 * (len + 1); |
2487 | ses->serverNOS[2 * len] = 0; | |
2488 | ses->serverNOS[1 + (2 * len)] = 0; | |
fb8c4b14 | 2489 | if (strncmp(ses->serverNOS, |
50c2f753 | 2490 | "NT LAN Manager 4", 16) == 0) { |
467a8f8d | 2491 | cFYI(1, ("NT4 server")); |
1da177e4 LT |
2492 | ses->flags |= CIFS_SES_NT4; |
2493 | } | |
2494 | remaining_words -= len + 1; | |
2495 | if (remaining_words > 0) { | |
433dc24f | 2496 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
50c2f753 SF |
2497 | /* last string is not always null terminated |
2498 | (for e.g. for Windows XP & 2000) */ | |
fb8c4b14 | 2499 | if (ses->serverDomain) |
a424f8bf | 2500 | kfree(ses->serverDomain); |
1da177e4 | 2501 | ses->serverDomain = |
50c2f753 SF |
2502 | kzalloc(2*(len+1), |
2503 | GFP_KERNEL); | |
fb8c4b14 | 2504 | if (ses->serverDomain == NULL) |
433dc24f | 2505 | goto sesssetup_nomem; |
1da177e4 | 2506 | cifs_strfromUCS_le(ses->serverDomain, |
50c2f753 SF |
2507 | (__le16 *)bcc_ptr, |
2508 | len, nls_codepage); | |
1da177e4 LT |
2509 | bcc_ptr += 2 * (len + 1); |
2510 | ses->serverDomain[2*len] = 0; | |
2511 | ses->serverDomain[1+(2*len)] = 0; | |
50c2f753 SF |
2512 | } else { /* else no more room so create |
2513 | dummy domain string */ | |
fb8c4b14 | 2514 | if (ses->serverDomain) |
a424f8bf | 2515 | kfree(ses->serverDomain); |
50c2f753 | 2516 | ses->serverDomain = |
e915fc49 | 2517 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2518 | } |
50c2f753 SF |
2519 | } else { /* no room so create dummy domain |
2520 | and NOS string */ | |
2521 | ||
433dc24f SF |
2522 | /* if these kcallocs fail not much we |
2523 | can do, but better to not fail the | |
2524 | sesssetup itself */ | |
cd49b492 | 2525 | kfree(ses->serverDomain); |
1da177e4 | 2526 | ses->serverDomain = |
e915fc49 | 2527 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2528 | kfree(ses->serverNOS); |
1da177e4 | 2529 | ses->serverNOS = |
e915fc49 | 2530 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2531 | } |
2532 | } else { /* ASCII */ | |
2533 | len = strnlen(bcc_ptr, 1024); | |
2534 | if (((long) bcc_ptr + len) - (long) | |
2535 | pByteArea(smb_buffer_response) | |
2536 | <= BCC(smb_buffer_response)) { | |
cd49b492 | 2537 | kfree(ses->serverOS); |
50c2f753 SF |
2538 | ses->serverOS = kzalloc(len + 1, |
2539 | GFP_KERNEL); | |
fb8c4b14 | 2540 | if (ses->serverOS == NULL) |
433dc24f | 2541 | goto sesssetup_nomem; |
50c2f753 | 2542 | strncpy(ses->serverOS, bcc_ptr, len); |
1da177e4 LT |
2543 | |
2544 | bcc_ptr += len; | |
50c2f753 SF |
2545 | /* null terminate the string */ |
2546 | bcc_ptr[0] = 0; | |
1da177e4 LT |
2547 | bcc_ptr++; |
2548 | ||
2549 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2550 | kfree(ses->serverNOS); |
50c2f753 SF |
2551 | ses->serverNOS = kzalloc(len + 1, |
2552 | GFP_KERNEL); | |
fb8c4b14 | 2553 | if (ses->serverNOS == NULL) |
433dc24f | 2554 | goto sesssetup_nomem; |
1da177e4 LT |
2555 | strncpy(ses->serverNOS, bcc_ptr, len); |
2556 | bcc_ptr += len; | |
2557 | bcc_ptr[0] = 0; | |
2558 | bcc_ptr++; | |
2559 | ||
2560 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 2561 | if (ses->serverDomain) |
a424f8bf | 2562 | kfree(ses->serverDomain); |
50c2f753 SF |
2563 | ses->serverDomain = kzalloc(len + 1, |
2564 | GFP_KERNEL); | |
fb8c4b14 | 2565 | if (ses->serverDomain == NULL) |
433dc24f | 2566 | goto sesssetup_nomem; |
50c2f753 SF |
2567 | strncpy(ses->serverDomain, bcc_ptr, |
2568 | len); | |
1da177e4 LT |
2569 | bcc_ptr += len; |
2570 | bcc_ptr[0] = 0; | |
2571 | bcc_ptr++; | |
2572 | } else | |
2573 | cFYI(1, | |
50c2f753 SF |
2574 | ("Variable field of length %d " |
2575 | "extends beyond end of smb ", | |
1da177e4 LT |
2576 | len)); |
2577 | } | |
2578 | } else { | |
2579 | cERROR(1, | |
50c2f753 SF |
2580 | (" Security Blob Length extends beyond " |
2581 | "end of SMB")); | |
1da177e4 LT |
2582 | } |
2583 | } else { | |
2584 | cERROR(1, | |
2585 | (" Invalid Word count %d: ", | |
2586 | smb_buffer_response->WordCount)); | |
2587 | rc = -EIO; | |
2588 | } | |
433dc24f SF |
2589 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2590 | since that could make reconnection harder, and | |
2591 | reconnection might be needed to free memory */ | |
a8a11d39 | 2592 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2593 | |
2594 | return rc; | |
2595 | } | |
2596 | ||
1da177e4 LT |
2597 | static int |
2598 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
4b18f2a9 | 2599 | struct cifsSesInfo *ses, bool *pNTLMv2_flag, |
1da177e4 LT |
2600 | const struct nls_table *nls_codepage) |
2601 | { | |
2602 | struct smb_hdr *smb_buffer; | |
2603 | struct smb_hdr *smb_buffer_response; | |
2604 | SESSION_SETUP_ANDX *pSMB; | |
2605 | SESSION_SETUP_ANDX *pSMBr; | |
2606 | char *bcc_ptr; | |
2607 | char *domain; | |
2608 | int rc = 0; | |
2609 | int remaining_words = 0; | |
2610 | int bytes_returned = 0; | |
2611 | int len; | |
6345a3a8 | 2612 | int SecurityBlobLength = sizeof(NEGOTIATE_MESSAGE); |
1da177e4 LT |
2613 | PNEGOTIATE_MESSAGE SecurityBlob; |
2614 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2615 | __u32 negotiate_flags, capabilities; | |
2616 | __u16 count; | |
2617 | ||
12b3b8ff | 2618 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
fb8c4b14 | 2619 | if (ses == NULL) |
1da177e4 LT |
2620 | return -EINVAL; |
2621 | domain = ses->domainName; | |
4b18f2a9 | 2622 | *pNTLMv2_flag = false; |
1da177e4 LT |
2623 | smb_buffer = cifs_buf_get(); |
2624 | if (smb_buffer == NULL) { | |
2625 | return -ENOMEM; | |
2626 | } | |
2627 | smb_buffer_response = smb_buffer; | |
2628 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2629 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2630 | ||
2631 | /* send SMBsessionSetup here */ | |
2632 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2633 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2634 | |
2635 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2636 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2637 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2638 | ||
2639 | pSMB->req.AndXCommand = 0xFF; | |
2640 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2641 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2642 | ||
fb8c4b14 | 2643 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2644 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2645 | ||
2646 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2647 | CAP_EXTENDED_SECURITY; | |
2648 | if (ses->capabilities & CAP_UNICODE) { | |
2649 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2650 | capabilities |= CAP_UNICODE; | |
2651 | } | |
2652 | if (ses->capabilities & CAP_STATUS32) { | |
2653 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2654 | capabilities |= CAP_STATUS32; | |
2655 | } | |
2656 | if (ses->capabilities & CAP_DFS) { | |
2657 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2658 | capabilities |= CAP_DFS; | |
2659 | } | |
2660 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2661 | ||
2662 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2663 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2664 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2665 | SecurityBlob->MessageType = NtLmNegotiate; | |
2666 | negotiate_flags = | |
2667 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2668 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2669 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 | 2670 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
fb8c4b14 | 2671 | if (sign_CIFS_PDUs) |
1da177e4 | 2672 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 2673 | /* if (ntlmv2_support) |
3979877e | 2674 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ |
1da177e4 LT |
2675 | /* setup pointers to domain name and workstation name */ |
2676 | bcc_ptr += SecurityBlobLength; | |
2677 | ||
2678 | SecurityBlob->WorkstationName.Buffer = 0; | |
2679 | SecurityBlob->WorkstationName.Length = 0; | |
2680 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2681 | ||
12b3b8ff SF |
2682 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2683 | along with username on auth request (ie the response to challenge) */ | |
2684 | SecurityBlob->DomainName.Buffer = 0; | |
2685 | SecurityBlob->DomainName.Length = 0; | |
2686 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2687 | if (ses->capabilities & CAP_UNICODE) { |
2688 | if ((long) bcc_ptr % 2) { | |
2689 | *bcc_ptr = 0; | |
2690 | bcc_ptr++; | |
2691 | } | |
2692 | ||
2693 | bytes_returned = | |
e89dc920 | 2694 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2695 | 32, nls_codepage); |
2696 | bcc_ptr += 2 * bytes_returned; | |
2697 | bytes_returned = | |
e9ff3990 | 2698 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2699 | nls_codepage); |
2700 | bcc_ptr += 2 * bytes_returned; | |
2701 | bcc_ptr += 2; /* null terminate Linux version */ | |
2702 | bytes_returned = | |
e89dc920 | 2703 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2704 | 64, nls_codepage); |
2705 | bcc_ptr += 2 * bytes_returned; | |
2706 | *(bcc_ptr + 1) = 0; | |
2707 | *(bcc_ptr + 2) = 0; | |
2708 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2709 | *(bcc_ptr + 1) = 0; | |
2710 | *(bcc_ptr + 2) = 0; | |
2711 | bcc_ptr += 2; /* null domain */ | |
2712 | } else { /* ASCII */ | |
2713 | strcpy(bcc_ptr, "Linux version "); | |
2714 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2715 | strcpy(bcc_ptr, utsname()->release); |
2716 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2717 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2718 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2719 | bcc_ptr++; /* empty domain field */ | |
2720 | *bcc_ptr = 0; | |
2721 | } | |
2722 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2723 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2724 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2725 | smb_buffer->smb_buf_length += count; | |
2726 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2727 | ||
2728 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2729 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2730 | |
2731 | if (smb_buffer_response->Status.CifsError == | |
2732 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2733 | rc = 0; | |
2734 | ||
2735 | if (rc) { | |
2736 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2737 | } else if ((smb_buffer_response->WordCount == 3) | |
2738 | || (smb_buffer_response->WordCount == 4)) { | |
2739 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2740 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2741 | ||
2742 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2743 | cFYI(1, (" Guest login")); |
2744 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
1da177e4 | 2745 | |
50c2f753 SF |
2746 | bcc_ptr = pByteArea(smb_buffer_response); |
2747 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
2748 | |
2749 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2750 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2751 | cFYI(1, | |
2752 | ("Unexpected NTLMSSP message type received %d", | |
2753 | SecurityBlob2->MessageType)); | |
2754 | } else if (ses) { | |
50c2f753 | 2755 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ |
12b3b8ff | 2756 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2757 | if ((pSMBr->resp.hdr.WordCount == 3) |
2758 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2759 | && (blob_len < | |
2760 | pSMBr->resp.ByteCount))) { | |
2761 | ||
2762 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2763 | bcc_ptr += blob_len; | |
12b3b8ff | 2764 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2765 | blob_len)); |
2766 | } | |
2767 | ||
12b3b8ff | 2768 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2769 | |
2770 | memcpy(ses->server->cryptKey, | |
2771 | SecurityBlob2->Challenge, | |
2772 | CIFS_CRYPTO_KEY_SIZE); | |
50c2f753 | 2773 | if (SecurityBlob2->NegotiateFlags & |
12b3b8ff | 2774 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) |
4b18f2a9 | 2775 | *pNTLMv2_flag = true; |
1da177e4 | 2776 | |
50c2f753 SF |
2777 | if ((SecurityBlob2->NegotiateFlags & |
2778 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
1da177e4 | 2779 | || (sign_CIFS_PDUs > 1)) |
50c2f753 SF |
2780 | ses->server->secMode |= |
2781 | SECMODE_SIGN_REQUIRED; | |
2782 | if ((SecurityBlob2->NegotiateFlags & | |
1da177e4 | 2783 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) |
50c2f753 | 2784 | ses->server->secMode |= |
1da177e4 LT |
2785 | SECMODE_SIGN_ENABLED; |
2786 | ||
2787 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2788 | if ((long) (bcc_ptr) % 2) { | |
2789 | remaining_words = | |
2790 | (BCC(smb_buffer_response) | |
2791 | - 1) / 2; | |
50c2f753 SF |
2792 | /* Must word align unicode strings */ |
2793 | bcc_ptr++; | |
1da177e4 LT |
2794 | } else { |
2795 | remaining_words = | |
2796 | BCC | |
2797 | (smb_buffer_response) / 2; | |
2798 | } | |
2799 | len = | |
2800 | UniStrnlen((wchar_t *) bcc_ptr, | |
2801 | remaining_words - 1); | |
2802 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2803 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2804 | terminating last Unicode string in response */ | |
fb8c4b14 | 2805 | if (ses->serverOS) |
a424f8bf | 2806 | kfree(ses->serverOS); |
1da177e4 | 2807 | ses->serverOS = |
e915fc49 | 2808 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2809 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2810 | (__le16 *) |
1da177e4 LT |
2811 | bcc_ptr, len, |
2812 | nls_codepage); | |
2813 | bcc_ptr += 2 * (len + 1); | |
2814 | remaining_words -= len + 1; | |
2815 | ses->serverOS[2 * len] = 0; | |
2816 | ses->serverOS[1 + (2 * len)] = 0; | |
2817 | if (remaining_words > 0) { | |
2818 | len = UniStrnlen((wchar_t *) | |
2819 | bcc_ptr, | |
2820 | remaining_words | |
2821 | - 1); | |
cd49b492 | 2822 | kfree(ses->serverNOS); |
1da177e4 | 2823 | ses->serverNOS = |
e915fc49 | 2824 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2825 | GFP_KERNEL); |
2826 | cifs_strfromUCS_le(ses-> | |
2827 | serverNOS, | |
e89dc920 | 2828 | (__le16 *) |
1da177e4 LT |
2829 | bcc_ptr, |
2830 | len, | |
2831 | nls_codepage); | |
2832 | bcc_ptr += 2 * (len + 1); | |
2833 | ses->serverNOS[2 * len] = 0; | |
2834 | ses->serverNOS[1 + | |
2835 | (2 * len)] = 0; | |
2836 | remaining_words -= len + 1; | |
2837 | if (remaining_words > 0) { | |
50c2f753 SF |
2838 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
2839 | /* last string not always null terminated | |
2840 | (for e.g. for Windows XP & 2000) */ | |
cd49b492 | 2841 | kfree(ses->serverDomain); |
1da177e4 | 2842 | ses->serverDomain = |
e915fc49 | 2843 | kzalloc(2 * |
1da177e4 LT |
2844 | (len + |
2845 | 1), | |
2846 | GFP_KERNEL); | |
2847 | cifs_strfromUCS_le | |
e89dc920 SF |
2848 | (ses->serverDomain, |
2849 | (__le16 *)bcc_ptr, | |
2850 | len, nls_codepage); | |
1da177e4 LT |
2851 | bcc_ptr += |
2852 | 2 * (len + 1); | |
e89dc920 | 2853 | ses->serverDomain[2*len] |
1da177e4 | 2854 | = 0; |
e89dc920 SF |
2855 | ses->serverDomain |
2856 | [1 + (2 * len)] | |
1da177e4 LT |
2857 | = 0; |
2858 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 2859 | else { |
cd49b492 | 2860 | kfree(ses->serverDomain); |
1da177e4 | 2861 | ses->serverDomain = |
e915fc49 | 2862 | kzalloc(2, |
1da177e4 | 2863 | GFP_KERNEL); |
a424f8bf | 2864 | } |
1da177e4 | 2865 | } else { /* no room so create dummy domain and NOS string */ |
cd49b492 | 2866 | kfree(ses->serverDomain); |
1da177e4 | 2867 | ses->serverDomain = |
e915fc49 | 2868 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2869 | kfree(ses->serverNOS); |
1da177e4 | 2870 | ses->serverNOS = |
e915fc49 | 2871 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2872 | } |
2873 | } else { /* ASCII */ | |
2874 | len = strnlen(bcc_ptr, 1024); | |
2875 | if (((long) bcc_ptr + len) - (long) | |
2876 | pByteArea(smb_buffer_response) | |
2877 | <= BCC(smb_buffer_response)) { | |
fb8c4b14 | 2878 | if (ses->serverOS) |
a424f8bf | 2879 | kfree(ses->serverOS); |
1da177e4 | 2880 | ses->serverOS = |
e915fc49 | 2881 | kzalloc(len + 1, |
1da177e4 LT |
2882 | GFP_KERNEL); |
2883 | strncpy(ses->serverOS, | |
2884 | bcc_ptr, len); | |
2885 | ||
2886 | bcc_ptr += len; | |
2887 | bcc_ptr[0] = 0; /* null terminate string */ | |
2888 | bcc_ptr++; | |
2889 | ||
2890 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2891 | kfree(ses->serverNOS); |
1da177e4 | 2892 | ses->serverNOS = |
e915fc49 | 2893 | kzalloc(len + 1, |
1da177e4 LT |
2894 | GFP_KERNEL); |
2895 | strncpy(ses->serverNOS, bcc_ptr, len); | |
2896 | bcc_ptr += len; | |
2897 | bcc_ptr[0] = 0; | |
2898 | bcc_ptr++; | |
2899 | ||
2900 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2901 | kfree(ses->serverDomain); |
1da177e4 | 2902 | ses->serverDomain = |
e915fc49 | 2903 | kzalloc(len + 1, |
1da177e4 | 2904 | GFP_KERNEL); |
50c2f753 SF |
2905 | strncpy(ses->serverDomain, |
2906 | bcc_ptr, len); | |
1da177e4 LT |
2907 | bcc_ptr += len; |
2908 | bcc_ptr[0] = 0; | |
2909 | bcc_ptr++; | |
2910 | } else | |
2911 | cFYI(1, | |
63135e08 SF |
2912 | ("field of length %d " |
2913 | "extends beyond end of smb", | |
1da177e4 LT |
2914 | len)); |
2915 | } | |
2916 | } else { | |
50c2f753 SF |
2917 | cERROR(1, ("Security Blob Length extends beyond" |
2918 | " end of SMB")); | |
1da177e4 LT |
2919 | } |
2920 | } else { | |
2921 | cERROR(1, ("No session structure passed in.")); | |
2922 | } | |
2923 | } else { | |
2924 | cERROR(1, | |
5815449d | 2925 | (" Invalid Word count %d:", |
1da177e4 LT |
2926 | smb_buffer_response->WordCount)); |
2927 | rc = -EIO; | |
2928 | } | |
2929 | ||
a8a11d39 | 2930 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2931 | |
2932 | return rc; | |
2933 | } | |
2934 | static int | |
2935 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
4b18f2a9 | 2936 | char *ntlm_session_key, bool ntlmv2_flag, |
6345a3a8 | 2937 | const struct nls_table *nls_codepage) |
1da177e4 LT |
2938 | { |
2939 | struct smb_hdr *smb_buffer; | |
2940 | struct smb_hdr *smb_buffer_response; | |
2941 | SESSION_SETUP_ANDX *pSMB; | |
2942 | SESSION_SETUP_ANDX *pSMBr; | |
2943 | char *bcc_ptr; | |
2944 | char *user; | |
2945 | char *domain; | |
2946 | int rc = 0; | |
2947 | int remaining_words = 0; | |
2948 | int bytes_returned = 0; | |
2949 | int len; | |
6345a3a8 | 2950 | int SecurityBlobLength = sizeof(AUTHENTICATE_MESSAGE); |
1da177e4 LT |
2951 | PAUTHENTICATE_MESSAGE SecurityBlob; |
2952 | __u32 negotiate_flags, capabilities; | |
2953 | __u16 count; | |
2954 | ||
2955 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
fb8c4b14 | 2956 | if (ses == NULL) |
1da177e4 LT |
2957 | return -EINVAL; |
2958 | user = ses->userName; | |
2959 | domain = ses->domainName; | |
2960 | smb_buffer = cifs_buf_get(); | |
2961 | if (smb_buffer == NULL) { | |
2962 | return -ENOMEM; | |
2963 | } | |
2964 | smb_buffer_response = smb_buffer; | |
6345a3a8 CG |
2965 | pSMB = (SESSION_SETUP_ANDX *)smb_buffer; |
2966 | pSMBr = (SESSION_SETUP_ANDX *)smb_buffer_response; | |
1da177e4 LT |
2967 | |
2968 | /* send SMBsessionSetup here */ | |
2969 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2970 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2971 | |
2972 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2973 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
2974 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2975 | pSMB->req.AndXCommand = 0xFF; | |
2976 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2977 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2978 | ||
2979 | pSMB->req.hdr.Uid = ses->Suid; | |
2980 | ||
fb8c4b14 | 2981 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2982 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2983 | ||
2984 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
6345a3a8 | 2985 | CAP_EXTENDED_SECURITY; |
1da177e4 LT |
2986 | if (ses->capabilities & CAP_UNICODE) { |
2987 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2988 | capabilities |= CAP_UNICODE; | |
2989 | } | |
2990 | if (ses->capabilities & CAP_STATUS32) { | |
2991 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2992 | capabilities |= CAP_STATUS32; | |
2993 | } | |
2994 | if (ses->capabilities & CAP_DFS) { | |
2995 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2996 | capabilities |= CAP_DFS; | |
2997 | } | |
2998 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2999 | ||
6345a3a8 CG |
3000 | bcc_ptr = (char *)&pSMB->req.SecurityBlob; |
3001 | SecurityBlob = (PAUTHENTICATE_MESSAGE)bcc_ptr; | |
1da177e4 LT |
3002 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); |
3003 | SecurityBlob->MessageType = NtLmAuthenticate; | |
3004 | bcc_ptr += SecurityBlobLength; | |
6345a3a8 CG |
3005 | negotiate_flags = NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | |
3006 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
3007 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
fb8c4b14 | 3008 | if (sign_CIFS_PDUs) |
1da177e4 | 3009 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 3010 | if (ntlmv2_flag) |
1da177e4 LT |
3011 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; |
3012 | ||
3013 | /* setup pointers to domain name and workstation name */ | |
3014 | ||
3015 | SecurityBlob->WorkstationName.Buffer = 0; | |
3016 | SecurityBlob->WorkstationName.Length = 0; | |
3017 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
3018 | SecurityBlob->SessionKey.Length = 0; | |
3019 | SecurityBlob->SessionKey.MaximumLength = 0; | |
3020 | SecurityBlob->SessionKey.Buffer = 0; | |
3021 | ||
3022 | SecurityBlob->LmChallengeResponse.Length = 0; | |
3023 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
3024 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
3025 | ||
3026 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 3027 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 3028 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
3029 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
3030 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
3031 | SecurityBlob->NtChallengeResponse.Buffer = |
3032 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
3033 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
3034 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
3035 | |
3036 | if (ses->capabilities & CAP_UNICODE) { | |
3037 | if (domain == NULL) { | |
3038 | SecurityBlob->DomainName.Buffer = 0; | |
3039 | SecurityBlob->DomainName.Length = 0; | |
3040 | SecurityBlob->DomainName.MaximumLength = 0; | |
3041 | } else { | |
77159b4d | 3042 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 | 3043 | nls_codepage); |
77159b4d | 3044 | ln *= 2; |
1da177e4 | 3045 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3046 | cpu_to_le16(ln); |
1da177e4 LT |
3047 | SecurityBlob->DomainName.Buffer = |
3048 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3049 | bcc_ptr += ln; |
3050 | SecurityBlobLength += ln; | |
3051 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3052 | } |
3053 | if (user == NULL) { | |
3054 | SecurityBlob->UserName.Buffer = 0; | |
3055 | SecurityBlob->UserName.Length = 0; | |
3056 | SecurityBlob->UserName.MaximumLength = 0; | |
3057 | } else { | |
77159b4d | 3058 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 | 3059 | nls_codepage); |
77159b4d | 3060 | ln *= 2; |
1da177e4 | 3061 | SecurityBlob->UserName.MaximumLength = |
77159b4d | 3062 | cpu_to_le16(ln); |
1da177e4 LT |
3063 | SecurityBlob->UserName.Buffer = |
3064 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3065 | bcc_ptr += ln; |
3066 | SecurityBlobLength += ln; | |
3067 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3068 | } |
3069 | ||
63135e08 SF |
3070 | /* SecurityBlob->WorkstationName.Length = |
3071 | cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); | |
1da177e4 | 3072 | SecurityBlob->WorkstationName.Length *= 2; |
63135e08 SF |
3073 | SecurityBlob->WorkstationName.MaximumLength = |
3074 | cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
3075 | SecurityBlob->WorkstationName.Buffer = | |
3076 | cpu_to_le32(SecurityBlobLength); | |
1da177e4 LT |
3077 | bcc_ptr += SecurityBlob->WorkstationName.Length; |
3078 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
63135e08 SF |
3079 | SecurityBlob->WorkstationName.Length = |
3080 | cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
1da177e4 LT |
3081 | |
3082 | if ((long) bcc_ptr % 2) { | |
3083 | *bcc_ptr = 0; | |
3084 | bcc_ptr++; | |
3085 | } | |
3086 | bytes_returned = | |
e89dc920 | 3087 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
3088 | 32, nls_codepage); |
3089 | bcc_ptr += 2 * bytes_returned; | |
3090 | bytes_returned = | |
e9ff3990 | 3091 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
3092 | nls_codepage); |
3093 | bcc_ptr += 2 * bytes_returned; | |
3094 | bcc_ptr += 2; /* null term version string */ | |
3095 | bytes_returned = | |
e89dc920 | 3096 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
3097 | 64, nls_codepage); |
3098 | bcc_ptr += 2 * bytes_returned; | |
3099 | *(bcc_ptr + 1) = 0; | |
3100 | *(bcc_ptr + 2) = 0; | |
3101 | bcc_ptr += 2; /* null terminate network opsys string */ | |
3102 | *(bcc_ptr + 1) = 0; | |
3103 | *(bcc_ptr + 2) = 0; | |
3104 | bcc_ptr += 2; /* null domain */ | |
3105 | } else { /* ASCII */ | |
3106 | if (domain == NULL) { | |
3107 | SecurityBlob->DomainName.Buffer = 0; | |
3108 | SecurityBlob->DomainName.Length = 0; | |
3109 | SecurityBlob->DomainName.MaximumLength = 0; | |
3110 | } else { | |
77159b4d | 3111 | __u16 ln; |
1da177e4 LT |
3112 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; |
3113 | strncpy(bcc_ptr, domain, 63); | |
77159b4d | 3114 | ln = strnlen(domain, 64); |
1da177e4 | 3115 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3116 | cpu_to_le16(ln); |
1da177e4 LT |
3117 | SecurityBlob->DomainName.Buffer = |
3118 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3119 | bcc_ptr += ln; |
3120 | SecurityBlobLength += ln; | |
3121 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3122 | } |
3123 | if (user == NULL) { | |
3124 | SecurityBlob->UserName.Buffer = 0; | |
3125 | SecurityBlob->UserName.Length = 0; | |
3126 | SecurityBlob->UserName.MaximumLength = 0; | |
3127 | } else { | |
77159b4d | 3128 | __u16 ln; |
1da177e4 | 3129 | strncpy(bcc_ptr, user, 63); |
77159b4d SF |
3130 | ln = strnlen(user, 64); |
3131 | SecurityBlob->UserName.MaximumLength = cpu_to_le16(ln); | |
1da177e4 | 3132 | SecurityBlob->UserName.Buffer = |
77159b4d SF |
3133 | cpu_to_le32(SecurityBlobLength); |
3134 | bcc_ptr += ln; | |
3135 | SecurityBlobLength += ln; | |
3136 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3137 | } |
3138 | /* BB fill in our workstation name if known BB */ | |
3139 | ||
3140 | strcpy(bcc_ptr, "Linux version "); | |
3141 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
3142 | strcpy(bcc_ptr, utsname()->release); |
3143 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
3144 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
3145 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
3146 | bcc_ptr++; /* null domain */ | |
3147 | *bcc_ptr = 0; | |
3148 | } | |
3149 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
3150 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
3151 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
3152 | smb_buffer->smb_buf_length += count; | |
3153 | pSMB->req.ByteCount = cpu_to_le16(count); | |
3154 | ||
3155 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 3156 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 | 3157 | if (rc) { |
6345a3a8 CG |
3158 | /* rc = map_smb_to_linux_error(smb_buffer_response) done in SendReceive now */ |
3159 | } else if ((smb_buffer_response->WordCount == 3) || | |
3160 | (smb_buffer_response->WordCount == 4)) { | |
1da177e4 | 3161 | __u16 action = le16_to_cpu(pSMBr->resp.Action); |
6345a3a8 | 3162 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); |
1da177e4 | 3163 | if (action & GUEST_LOGIN) |
50c2f753 SF |
3164 | cFYI(1, (" Guest login")); /* BB Should we set anything |
3165 | in SesInfo struct ? */ | |
3166 | /* if (SecurityBlob2->MessageType != NtLm??) { | |
3167 | cFYI("Unexpected message type on auth response is %d")); | |
3168 | } */ | |
3169 | ||
1da177e4 LT |
3170 | if (ses) { |
3171 | cFYI(1, | |
50c2f753 | 3172 | ("Check challenge UID %d vs auth response UID %d", |
1da177e4 | 3173 | ses->Suid, smb_buffer_response->Uid)); |
50c2f753 SF |
3174 | /* UID left in wire format */ |
3175 | ses->Suid = smb_buffer_response->Uid; | |
3176 | bcc_ptr = pByteArea(smb_buffer_response); | |
3177 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
3178 | if ((pSMBr->resp.hdr.WordCount == 3) |
3179 | || ((pSMBr->resp.hdr.WordCount == 4) | |
3180 | && (blob_len < | |
3181 | pSMBr->resp.ByteCount))) { | |
3182 | if (pSMBr->resp.hdr.WordCount == 4) { | |
3183 | bcc_ptr += | |
3184 | blob_len; | |
3185 | cFYI(1, | |
3186 | ("Security Blob Length %d ", | |
3187 | blob_len)); | |
3188 | } | |
3189 | ||
3190 | cFYI(1, | |
3191 | ("NTLMSSP response to Authenticate ")); | |
3192 | ||
3193 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3194 | if ((long) (bcc_ptr) % 2) { | |
3195 | remaining_words = | |
3196 | (BCC(smb_buffer_response) | |
3197 | - 1) / 2; | |
3198 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
3199 | } else { | |
3200 | remaining_words = BCC(smb_buffer_response) / 2; | |
3201 | } | |
77159b4d SF |
3202 | len = UniStrnlen((wchar_t *) bcc_ptr, |
3203 | remaining_words - 1); | |
1da177e4 LT |
3204 | /* We look for obvious messed up bcc or strings in response so we do not go off |
3205 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
3206 | terminating last Unicode string in response */ | |
fb8c4b14 | 3207 | if (ses->serverOS) |
08775834 | 3208 | kfree(ses->serverOS); |
1da177e4 | 3209 | ses->serverOS = |
e915fc49 | 3210 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 3211 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 3212 | (__le16 *) |
1da177e4 LT |
3213 | bcc_ptr, len, |
3214 | nls_codepage); | |
3215 | bcc_ptr += 2 * (len + 1); | |
3216 | remaining_words -= len + 1; | |
3217 | ses->serverOS[2 * len] = 0; | |
3218 | ses->serverOS[1 + (2 * len)] = 0; | |
3219 | if (remaining_words > 0) { | |
3220 | len = UniStrnlen((wchar_t *) | |
3221 | bcc_ptr, | |
3222 | remaining_words | |
3223 | - 1); | |
cd49b492 | 3224 | kfree(ses->serverNOS); |
1da177e4 | 3225 | ses->serverNOS = |
e915fc49 | 3226 | kzalloc(2 * (len + 1), |
1da177e4 LT |
3227 | GFP_KERNEL); |
3228 | cifs_strfromUCS_le(ses-> | |
3229 | serverNOS, | |
e89dc920 | 3230 | (__le16 *) |
1da177e4 LT |
3231 | bcc_ptr, |
3232 | len, | |
3233 | nls_codepage); | |
3234 | bcc_ptr += 2 * (len + 1); | |
3235 | ses->serverNOS[2 * len] = 0; | |
3236 | ses->serverNOS[1+(2*len)] = 0; | |
3237 | remaining_words -= len + 1; | |
3238 | if (remaining_words > 0) { | |
50c2f753 | 3239 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 3240 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ |
fb8c4b14 | 3241 | if (ses->serverDomain) |
a424f8bf | 3242 | kfree(ses->serverDomain); |
1da177e4 | 3243 | ses->serverDomain = |
e915fc49 | 3244 | kzalloc(2 * |
1da177e4 LT |
3245 | (len + |
3246 | 1), | |
3247 | GFP_KERNEL); | |
3248 | cifs_strfromUCS_le | |
3249 | (ses-> | |
3250 | serverDomain, | |
e89dc920 | 3251 | (__le16 *) |
1da177e4 LT |
3252 | bcc_ptr, len, |
3253 | nls_codepage); | |
3254 | bcc_ptr += | |
3255 | 2 * (len + 1); | |
3256 | ses-> | |
3257 | serverDomain[2 | |
3258 | * len] | |
3259 | = 0; | |
3260 | ses-> | |
3261 | serverDomain[1 | |
3262 | + | |
3263 | (2 | |
3264 | * | |
3265 | len)] | |
3266 | = 0; | |
3267 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 3268 | else { |
fb8c4b14 | 3269 | if (ses->serverDomain) |
a424f8bf | 3270 | kfree(ses->serverDomain); |
e915fc49 | 3271 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 3272 | } |
1da177e4 | 3273 | } else { /* no room so create dummy domain and NOS string */ |
fb8c4b14 | 3274 | if (ses->serverDomain) |
a424f8bf | 3275 | kfree(ses->serverDomain); |
e915fc49 | 3276 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 3277 | kfree(ses->serverNOS); |
e915fc49 | 3278 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3279 | } |
3280 | } else { /* ASCII */ | |
3281 | len = strnlen(bcc_ptr, 1024); | |
50c2f753 SF |
3282 | if (((long) bcc_ptr + len) - |
3283 | (long) pByteArea(smb_buffer_response) | |
63135e08 | 3284 | <= BCC(smb_buffer_response)) { |
fb8c4b14 | 3285 | if (ses->serverOS) |
a424f8bf | 3286 | kfree(ses->serverOS); |
77159b4d | 3287 | ses->serverOS = kzalloc(len + 1, GFP_KERNEL); |
1da177e4 LT |
3288 | strncpy(ses->serverOS,bcc_ptr, len); |
3289 | ||
3290 | bcc_ptr += len; | |
3291 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3292 | bcc_ptr++; | |
3293 | ||
3294 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3295 | kfree(ses->serverNOS); |
50c2f753 SF |
3296 | ses->serverNOS = kzalloc(len+1, |
3297 | GFP_KERNEL); | |
63135e08 SF |
3298 | strncpy(ses->serverNOS, |
3299 | bcc_ptr, len); | |
1da177e4 LT |
3300 | bcc_ptr += len; |
3301 | bcc_ptr[0] = 0; | |
3302 | bcc_ptr++; | |
3303 | ||
3304 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 3305 | if (ses->serverDomain) |
a424f8bf | 3306 | kfree(ses->serverDomain); |
63135e08 SF |
3307 | ses->serverDomain = |
3308 | kzalloc(len+1, | |
3309 | GFP_KERNEL); | |
3310 | strncpy(ses->serverDomain, | |
3311 | bcc_ptr, len); | |
1da177e4 LT |
3312 | bcc_ptr += len; |
3313 | bcc_ptr[0] = 0; | |
3314 | bcc_ptr++; | |
3315 | } else | |
6345a3a8 | 3316 | cFYI(1, ("field of length %d " |
63135e08 | 3317 | "extends beyond end of smb ", |
1da177e4 LT |
3318 | len)); |
3319 | } | |
3320 | } else { | |
6345a3a8 | 3321 | cERROR(1, ("Security Blob extends beyond end " |
63135e08 | 3322 | "of SMB")); |
1da177e4 LT |
3323 | } |
3324 | } else { | |
3325 | cERROR(1, ("No session structure passed in.")); | |
3326 | } | |
3327 | } else { | |
6345a3a8 | 3328 | cERROR(1, ("Invalid Word count %d: ", |
1da177e4 LT |
3329 | smb_buffer_response->WordCount)); |
3330 | rc = -EIO; | |
3331 | } | |
3332 | ||
a8a11d39 | 3333 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3334 | |
3335 | return rc; | |
3336 | } | |
3337 | ||
3338 | int | |
3339 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3340 | const char *tree, struct cifsTconInfo *tcon, | |
3341 | const struct nls_table *nls_codepage) | |
3342 | { | |
3343 | struct smb_hdr *smb_buffer; | |
3344 | struct smb_hdr *smb_buffer_response; | |
3345 | TCONX_REQ *pSMB; | |
3346 | TCONX_RSP *pSMBr; | |
3347 | unsigned char *bcc_ptr; | |
3348 | int rc = 0; | |
3349 | int length; | |
3350 | __u16 count; | |
3351 | ||
3352 | if (ses == NULL) | |
3353 | return -EIO; | |
3354 | ||
3355 | smb_buffer = cifs_buf_get(); | |
3356 | if (smb_buffer == NULL) { | |
3357 | return -ENOMEM; | |
3358 | } | |
3359 | smb_buffer_response = smb_buffer; | |
3360 | ||
3361 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3362 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3363 | |
3364 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3365 | smb_buffer->Uid = ses->Suid; |
3366 | pSMB = (TCONX_REQ *) smb_buffer; | |
3367 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3368 | ||
3369 | pSMB->AndXCommand = 0xFF; | |
3370 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3371 | bcc_ptr = &pSMB->Password[0]; |
fb8c4b14 | 3372 | if ((ses->server->secMode) & SECMODE_USER) { |
eeac8047 | 3373 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
7c7b25bc | 3374 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3375 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3376 | /* already aligned so no need to do it below */ |
eeac8047 | 3377 | } else { |
7c7b25bc | 3378 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3379 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3380 | specified as required (when that support is added to | |
3381 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3382 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3383 | by Samba (not sure whether other servers allow |
3384 | NTLMv2 password here) */ | |
7c7b25bc | 3385 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
50c2f753 | 3386 | if ((extended_security & CIFSSEC_MAY_LANMAN) && |
7c7b25bc SF |
3387 | (ses->server->secType == LANMAN)) |
3388 | calc_lanman_hash(ses, bcc_ptr); | |
3389 | else | |
3390 | #endif /* CIFS_WEAK_PW_HASH */ | |
eeac8047 SF |
3391 | SMBNTencrypt(ses->password, |
3392 | ses->server->cryptKey, | |
3393 | bcc_ptr); | |
3394 | ||
7c7b25bc | 3395 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
fb8c4b14 | 3396 | if (ses->capabilities & CAP_UNICODE) { |
7c7b25bc SF |
3397 | /* must align unicode strings */ |
3398 | *bcc_ptr = 0; /* null byte password */ | |
3399 | bcc_ptr++; | |
3400 | } | |
eeac8047 | 3401 | } |
1da177e4 | 3402 | |
50c2f753 | 3403 | if (ses->server->secMode & |
a878fb22 | 3404 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3405 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3406 | ||
3407 | if (ses->capabilities & CAP_STATUS32) { | |
3408 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3409 | } | |
3410 | if (ses->capabilities & CAP_DFS) { | |
3411 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3412 | } | |
3413 | if (ses->capabilities & CAP_UNICODE) { | |
3414 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3415 | length = | |
50c2f753 SF |
3416 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3417 | 6 /* max utf8 char length in bytes */ * | |
a878fb22 SF |
3418 | (/* server len*/ + 256 /* share len */), nls_codepage); |
3419 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3420 | bcc_ptr += 2; /* skip trailing null */ |
3421 | } else { /* ASCII */ | |
1da177e4 LT |
3422 | strcpy(bcc_ptr, tree); |
3423 | bcc_ptr += strlen(tree) + 1; | |
3424 | } | |
3425 | strcpy(bcc_ptr, "?????"); | |
3426 | bcc_ptr += strlen("?????"); | |
3427 | bcc_ptr += 1; | |
3428 | count = bcc_ptr - &pSMB->Password[0]; | |
3429 | pSMB->hdr.smb_buf_length += count; | |
3430 | pSMB->ByteCount = cpu_to_le16(count); | |
3431 | ||
133672ef SF |
3432 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, |
3433 | CIFS_STD_OP); | |
1da177e4 LT |
3434 | |
3435 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3436 | /* above now done in SendReceive */ | |
3437 | if ((rc == 0) && (tcon != NULL)) { | |
3438 | tcon->tidStatus = CifsGood; | |
3439 | tcon->tid = smb_buffer_response->Tid; | |
3440 | bcc_ptr = pByteArea(smb_buffer_response); | |
3441 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
50c2f753 | 3442 | /* skip service field (NB: this field is always ASCII) */ |
7f8ed420 SF |
3443 | if (length == 3) { |
3444 | if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') && | |
3445 | (bcc_ptr[2] == 'C')) { | |
3446 | cFYI(1, ("IPC connection")); | |
3447 | tcon->ipc = 1; | |
3448 | } | |
3449 | } else if (length == 2) { | |
3450 | if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) { | |
3451 | /* the most common case */ | |
3452 | cFYI(1, ("disk share connection")); | |
3453 | } | |
3454 | } | |
50c2f753 | 3455 | bcc_ptr += length + 1; |
1da177e4 LT |
3456 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
3457 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3458 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3459 | if ((bcc_ptr + (2 * length)) - | |
3460 | pByteArea(smb_buffer_response) <= | |
3461 | BCC(smb_buffer_response)) { | |
f99d49ad | 3462 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3463 | tcon->nativeFileSystem = |
e915fc49 | 3464 | kzalloc(length + 2, GFP_KERNEL); |
88f370a6 SF |
3465 | if (tcon->nativeFileSystem) |
3466 | cifs_strfromUCS_le( | |
3467 | tcon->nativeFileSystem, | |
3468 | (__le16 *) bcc_ptr, | |
3469 | length, nls_codepage); | |
1da177e4 LT |
3470 | bcc_ptr += 2 * length; |
3471 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3472 | bcc_ptr[1] = 0; | |
3473 | bcc_ptr += 2; | |
3474 | } | |
50c2f753 | 3475 | /* else do not bother copying these information fields*/ |
1da177e4 LT |
3476 | } else { |
3477 | length = strnlen(bcc_ptr, 1024); | |
3478 | if ((bcc_ptr + length) - | |
3479 | pByteArea(smb_buffer_response) <= | |
3480 | BCC(smb_buffer_response)) { | |
f99d49ad | 3481 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3482 | tcon->nativeFileSystem = |
e915fc49 | 3483 | kzalloc(length + 1, GFP_KERNEL); |
88f370a6 SF |
3484 | if (tcon->nativeFileSystem) |
3485 | strncpy(tcon->nativeFileSystem, bcc_ptr, | |
3486 | length); | |
1da177e4 | 3487 | } |
50c2f753 | 3488 | /* else do not bother copying these information fields*/ |
1da177e4 | 3489 | } |
fb8c4b14 | 3490 | if ((smb_buffer_response->WordCount == 3) || |
1a4e15a0 SF |
3491 | (smb_buffer_response->WordCount == 7)) |
3492 | /* field is in same location */ | |
3979877e SF |
3493 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
3494 | else | |
3495 | tcon->Flags = 0; | |
1da177e4 LT |
3496 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3497 | } else if ((rc == 0) && tcon == NULL) { | |
50c2f753 | 3498 | /* all we need to save for IPC$ connection */ |
1da177e4 LT |
3499 | ses->ipc_tid = smb_buffer_response->Tid; |
3500 | } | |
3501 | ||
a8a11d39 | 3502 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3503 | return rc; |
3504 | } | |
3505 | ||
3506 | int | |
3507 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3508 | { | |
3509 | int rc = 0; | |
3510 | int xid; | |
3511 | struct cifsSesInfo *ses = NULL; | |
3512 | struct task_struct *cifsd_task; | |
50c2f753 | 3513 | char *tmp; |
1da177e4 LT |
3514 | |
3515 | xid = GetXid(); | |
3516 | ||
3517 | if (cifs_sb->tcon) { | |
3518 | ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ | |
3519 | rc = CIFSSMBTDis(xid, cifs_sb->tcon); | |
3520 | if (rc == -EBUSY) { | |
3521 | FreeXid(xid); | |
3522 | return 0; | |
3523 | } | |
5d941ca6 | 3524 | DeleteTconOplockQEntries(cifs_sb->tcon); |
1da177e4 LT |
3525 | tconInfoFree(cifs_sb->tcon); |
3526 | if ((ses) && (ses->server)) { | |
3527 | /* save off task so we do not refer to ses later */ | |
3528 | cifsd_task = ses->server->tsk; | |
3529 | cFYI(1, ("About to do SMBLogoff ")); | |
3530 | rc = CIFSSMBLogoff(xid, ses); | |
3531 | if (rc == -EBUSY) { | |
3532 | FreeXid(xid); | |
3533 | return 0; | |
3534 | } else if (rc == -ESHUTDOWN) { | |
467a8f8d | 3535 | cFYI(1, ("Waking up socket by sending signal")); |
f7f7c31c | 3536 | if (cifsd_task) { |
50c2f753 | 3537 | force_sig(SIGKILL, cifsd_task); |
aaf737ad | 3538 | kthread_stop(cifsd_task); |
f191401f | 3539 | } |
1da177e4 LT |
3540 | rc = 0; |
3541 | } /* else - we have an smb session | |
3542 | left on this socket do not kill cifsd */ | |
3543 | } else | |
3544 | cFYI(1, ("No session or bad tcon")); | |
3545 | } | |
50c2f753 | 3546 | |
1da177e4 | 3547 | cifs_sb->tcon = NULL; |
2fe87f02 SF |
3548 | tmp = cifs_sb->prepath; |
3549 | cifs_sb->prepathlen = 0; | |
3550 | cifs_sb->prepath = NULL; | |
3551 | kfree(tmp); | |
1da177e4 LT |
3552 | if (ses) |
3553 | sesInfoFree(ses); | |
3554 | ||
3555 | FreeXid(xid); | |
88e7d705 | 3556 | return rc; |
50c2f753 | 3557 | } |
1da177e4 LT |
3558 | |
3559 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
50c2f753 | 3560 | struct nls_table *nls_info) |
1da177e4 LT |
3561 | { |
3562 | int rc = 0; | |
7c7b25bc | 3563 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
4b18f2a9 | 3564 | bool ntlmv2_flag = false; |
ad009ac9 | 3565 | int first_time = 0; |
1da177e4 LT |
3566 | |
3567 | /* what if server changes its buffer size after dropping the session? */ | |
fb8c4b14 | 3568 | if (pSesInfo->server->maxBuf == 0) /* no need to send on reconnect */ { |
1da177e4 | 3569 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
fb8c4b14 | 3570 | if (rc == -EAGAIN) /* retry only once on 1st time connection */ { |
1da177e4 | 3571 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
50c2f753 | 3572 | if (rc == -EAGAIN) |
1da177e4 LT |
3573 | rc = -EHOSTDOWN; |
3574 | } | |
fb8c4b14 | 3575 | if (rc == 0) { |
1da177e4 | 3576 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 | 3577 | if (pSesInfo->server->tcpStatus != CifsExiting) |
1da177e4 LT |
3578 | pSesInfo->server->tcpStatus = CifsGood; |
3579 | else | |
3580 | rc = -EHOSTDOWN; | |
3581 | spin_unlock(&GlobalMid_Lock); | |
3582 | ||
3583 | } | |
ad009ac9 | 3584 | first_time = 1; |
1da177e4 LT |
3585 | } |
3586 | if (!rc) { | |
9ac00b7d | 3587 | pSesInfo->flags = 0; |
1da177e4 | 3588 | pSesInfo->capabilities = pSesInfo->server->capabilities; |
fb8c4b14 | 3589 | if (linuxExtEnabled == 0) |
1da177e4 | 3590 | pSesInfo->capabilities &= (~CAP_UNIX); |
ad009ac9 | 3591 | /* pSesInfo->sequence_number = 0;*/ |
50c2f753 SF |
3592 | cFYI(1, |
3593 | ("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", | |
1da177e4 LT |
3594 | pSesInfo->server->secMode, |
3595 | pSesInfo->server->capabilities, | |
175ec9e1 | 3596 | pSesInfo->server->timeAdj)); |
fb8c4b14 | 3597 | if (experimEnabled < 2) |
3979877e SF |
3598 | rc = CIFS_SessSetup(xid, pSesInfo, |
3599 | first_time, nls_info); | |
189acaae | 3600 | else if (extended_security |
50c2f753 | 3601 | && (pSesInfo->capabilities |
175ec9e1 | 3602 | & CAP_EXTENDED_SECURITY) |
1da177e4 | 3603 | && (pSesInfo->server->secType == NTLMSSP)) { |
189acaae | 3604 | rc = -EOPNOTSUPP; |
1da177e4 LT |
3605 | } else if (extended_security |
3606 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
3607 | && (pSesInfo->server->secType == RawNTLMSSP)) { | |
5815449d | 3608 | cFYI(1, ("NTLMSSP sesssetup")); |
1da177e4 LT |
3609 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, |
3610 | pSesInfo, | |
3611 | &ntlmv2_flag, | |
3612 | nls_info); | |
3613 | if (!rc) { | |
fb8c4b14 | 3614 | if (ntlmv2_flag) { |
50c2f753 | 3615 | char *v2_response; |
467a8f8d | 3616 | cFYI(1, ("more secure NTLM ver2 hash")); |
50c2f753 | 3617 | if (CalcNTLMv2_partial_mac_key(pSesInfo, |
1da177e4 LT |
3618 | nls_info)) { |
3619 | rc = -ENOMEM; | |
3620 | goto ss_err_exit; | |
3621 | } else | |
3622 | v2_response = kmalloc(16 + 64 /* blob */, GFP_KERNEL); | |
fb8c4b14 | 3623 | if (v2_response) { |
50c2f753 SF |
3624 | CalcNTLMv2_response(pSesInfo, |
3625 | v2_response); | |
fb8c4b14 | 3626 | /* if (first_time) |
50c2f753 SF |
3627 | cifs_calculate_ntlmv2_mac_key( |
3628 | pSesInfo->server->mac_signing_key, | |
3629 | response, ntlm_session_key,*/ | |
1da177e4 LT |
3630 | kfree(v2_response); |
3631 | /* BB Put dummy sig in SessSetup PDU? */ | |
3632 | } else { | |
3633 | rc = -ENOMEM; | |
3634 | goto ss_err_exit; | |
3635 | } | |
3636 | ||
3637 | } else { | |
3638 | SMBNTencrypt(pSesInfo->password, | |
3639 | pSesInfo->server->cryptKey, | |
3640 | ntlm_session_key); | |
3641 | ||
fb8c4b14 | 3642 | if (first_time) |
ad009ac9 | 3643 | cifs_calculate_mac_key( |
b609f06a | 3644 | &pSesInfo->server->mac_signing_key, |
ad009ac9 SF |
3645 | ntlm_session_key, |
3646 | pSesInfo->password); | |
1da177e4 LT |
3647 | } |
3648 | /* for better security the weaker lanman hash not sent | |
3649 | in AuthSessSetup so we no longer calculate it */ | |
3650 | ||
3651 | rc = CIFSNTLMSSPAuthSessSetup(xid, | |
3652 | pSesInfo, | |
3653 | ntlm_session_key, | |
3654 | ntlmv2_flag, | |
3655 | nls_info); | |
3656 | } | |
3657 | } else { /* old style NTLM 0.12 session setup */ | |
3658 | SMBNTencrypt(pSesInfo->password, | |
3659 | pSesInfo->server->cryptKey, | |
3660 | ntlm_session_key); | |
3661 | ||
fb8c4b14 | 3662 | if (first_time) |
ad009ac9 | 3663 | cifs_calculate_mac_key( |
b609f06a | 3664 | &pSesInfo->server->mac_signing_key, |
ad009ac9 SF |
3665 | ntlm_session_key, pSesInfo->password); |
3666 | ||
1da177e4 LT |
3667 | rc = CIFSSessSetup(xid, pSesInfo, |
3668 | ntlm_session_key, nls_info); | |
3669 | } | |
3670 | if (rc) { | |
fb8c4b14 | 3671 | cERROR(1, ("Send error in SessSetup = %d", rc)); |
1da177e4 | 3672 | } else { |
467a8f8d | 3673 | cFYI(1, ("CIFS Session Established successfully")); |
1da177e4 LT |
3674 | pSesInfo->status = CifsGood; |
3675 | } | |
3676 | } | |
3677 | ss_err_exit: | |
3678 | return rc; | |
3679 | } | |
3680 |