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 */ | |
5ca33c6a | 458 | pdu_length = be32_to_cpu((__force __be32)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 | 655 | spin_unlock(&GlobalMid_Lock); |
dbdbb876 | 656 | wake_up_all(&server->response_q); |
e691b9d1 SF |
657 | |
658 | /* don't exit until kthread_stop is called */ | |
659 | set_current_state(TASK_UNINTERRUPTIBLE); | |
660 | while (!kthread_should_stop()) { | |
661 | schedule(); | |
662 | set_current_state(TASK_UNINTERRUPTIBLE); | |
663 | } | |
664 | set_current_state(TASK_RUNNING); | |
665 | ||
31ca3bc3 SF |
666 | /* check if we have blocked requests that need to free */ |
667 | /* Note that cifs_max_pending is normally 50, but | |
668 | can be set at module install time to as little as two */ | |
e691b9d1 | 669 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 | 670 | if (atomic_read(&server->inFlight) >= cifs_max_pending) |
31ca3bc3 SF |
671 | atomic_set(&server->inFlight, cifs_max_pending - 1); |
672 | /* We do not want to set the max_pending too low or we | |
673 | could end up with the counter going negative */ | |
1da177e4 | 674 | spin_unlock(&GlobalMid_Lock); |
50c2f753 | 675 | /* Although there should not be any requests blocked on |
1da177e4 | 676 | this queue it can not hurt to be paranoid and try to wake up requests |
09d1db5c | 677 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
678 | to the same server - they now will see the session is in exit state |
679 | and get out of SendReceive. */ | |
680 | wake_up_all(&server->request_q); | |
681 | /* give those requests time to exit */ | |
b8643e1b | 682 | msleep(125); |
50c2f753 | 683 | |
fb8c4b14 | 684 | if (server->ssocket) { |
1da177e4 LT |
685 | sock_release(csocket); |
686 | server->ssocket = NULL; | |
687 | } | |
b8643e1b | 688 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
a8a11d39 MK |
689 | cifs_buf_release(bigbuf); |
690 | if (smallbuf) /* no sense logging a debug message if NULL */ | |
b8643e1b | 691 | cifs_small_buf_release(smallbuf); |
1da177e4 LT |
692 | |
693 | read_lock(&GlobalSMBSeslock); | |
694 | if (list_empty(&server->pending_mid_q)) { | |
09d1db5c SF |
695 | /* loop through server session structures attached to this and |
696 | mark them dead */ | |
1da177e4 LT |
697 | list_for_each(tmp, &GlobalSMBSessionList) { |
698 | ses = | |
699 | list_entry(tmp, struct cifsSesInfo, | |
700 | cifsSessionList); | |
701 | if (ses->server == server) { | |
702 | ses->status = CifsExiting; | |
703 | ses->server = NULL; | |
704 | } | |
705 | } | |
706 | read_unlock(&GlobalSMBSeslock); | |
707 | } else { | |
31ca3bc3 SF |
708 | /* although we can not zero the server struct pointer yet, |
709 | since there are active requests which may depnd on them, | |
710 | mark the corresponding SMB sessions as exiting too */ | |
711 | list_for_each(tmp, &GlobalSMBSessionList) { | |
712 | ses = list_entry(tmp, struct cifsSesInfo, | |
713 | cifsSessionList); | |
26f57364 | 714 | if (ses->server == server) |
31ca3bc3 | 715 | ses->status = CifsExiting; |
31ca3bc3 SF |
716 | } |
717 | ||
1da177e4 LT |
718 | spin_lock(&GlobalMid_Lock); |
719 | list_for_each(tmp, &server->pending_mid_q) { | |
720 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
721 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
50c2f753 SF |
722 | cFYI(1, ("Clearing Mid 0x%x - waking up ", |
723 | mid_entry->mid)); | |
1da177e4 | 724 | task_to_wake = mid_entry->tsk; |
26f57364 | 725 | if (task_to_wake) |
1da177e4 | 726 | wake_up_process(task_to_wake); |
1da177e4 LT |
727 | } |
728 | } | |
729 | spin_unlock(&GlobalMid_Lock); | |
730 | read_unlock(&GlobalSMBSeslock); | |
1da177e4 | 731 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 732 | msleep(125); |
1da177e4 LT |
733 | } |
734 | ||
f191401f | 735 | if (!list_empty(&server->pending_mid_q)) { |
50c2f753 | 736 | /* mpx threads have not exited yet give them |
1da177e4 | 737 | at least the smb send timeout time for long ops */ |
31ca3bc3 SF |
738 | /* due to delays on oplock break requests, we need |
739 | to wait at least 45 seconds before giving up | |
740 | on a request getting a response and going ahead | |
741 | and killing cifsd */ | |
1da177e4 | 742 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 743 | msleep(46000); |
1da177e4 LT |
744 | /* if threads still have not exited they are probably never |
745 | coming home not much else we can do but free the memory */ | |
746 | } | |
1da177e4 LT |
747 | |
748 | write_lock(&GlobalSMBSeslock); | |
749 | atomic_dec(&tcpSesAllocCount); | |
750 | length = tcpSesAllocCount.counter; | |
31ca3bc3 SF |
751 | |
752 | /* last chance to mark ses pointers invalid | |
753 | if there are any pointing to this (e.g | |
50c2f753 | 754 | if a crazy root user tried to kill cifsd |
31ca3bc3 SF |
755 | kernel thread explicitly this might happen) */ |
756 | list_for_each(tmp, &GlobalSMBSessionList) { | |
757 | ses = list_entry(tmp, struct cifsSesInfo, | |
758 | cifsSessionList); | |
26f57364 | 759 | if (ses->server == server) |
31ca3bc3 | 760 | ses->server = NULL; |
31ca3bc3 | 761 | } |
1da177e4 | 762 | write_unlock(&GlobalSMBSeslock); |
31ca3bc3 | 763 | |
c359cf3c | 764 | kfree(server->hostname); |
31ca3bc3 | 765 | kfree(server); |
26f57364 SF |
766 | if (length > 0) |
767 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, | |
768 | GFP_KERNEL); | |
50c2f753 | 769 | |
1da177e4 LT |
770 | return 0; |
771 | } | |
772 | ||
c359cf3c JL |
773 | /* extract the host portion of the UNC string */ |
774 | static char * | |
775 | extract_hostname(const char *unc) | |
776 | { | |
777 | const char *src; | |
778 | char *dst, *delim; | |
779 | unsigned int len; | |
780 | ||
781 | /* skip double chars at beginning of string */ | |
782 | /* BB: check validity of these bytes? */ | |
783 | src = unc + 2; | |
784 | ||
785 | /* delimiter between hostname and sharename is always '\\' now */ | |
786 | delim = strchr(src, '\\'); | |
787 | if (!delim) | |
788 | return ERR_PTR(-EINVAL); | |
789 | ||
790 | len = delim - src; | |
791 | dst = kmalloc((len + 1), GFP_KERNEL); | |
792 | if (dst == NULL) | |
793 | return ERR_PTR(-ENOMEM); | |
794 | ||
795 | memcpy(dst, src, len); | |
796 | dst[len] = '\0'; | |
797 | ||
798 | return dst; | |
799 | } | |
800 | ||
1da177e4 | 801 | static int |
50c2f753 SF |
802 | cifs_parse_mount_options(char *options, const char *devname, |
803 | struct smb_vol *vol) | |
1da177e4 LT |
804 | { |
805 | char *value; | |
806 | char *data; | |
807 | unsigned int temp_len, i, j; | |
808 | char separator[2]; | |
809 | ||
810 | separator[0] = ','; | |
50c2f753 | 811 | separator[1] = 0; |
1da177e4 | 812 | |
12e36b2f | 813 | if (Local_System_Name[0] != 0) |
50c2f753 | 814 | memcpy(vol->source_rfc1001_name, Local_System_Name, 15); |
2cd646a2 | 815 | else { |
12e36b2f | 816 | char *nodename = utsname()->nodename; |
50c2f753 SF |
817 | int n = strnlen(nodename, 15); |
818 | memset(vol->source_rfc1001_name, 0x20, 15); | |
819 | for (i = 0; i < n; i++) { | |
2cd646a2 SF |
820 | /* does not have to be perfect mapping since field is |
821 | informational, only used for servers that do not support | |
822 | port 445 and it can be overridden at mount time */ | |
12e36b2f | 823 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
2cd646a2 | 824 | } |
1da177e4 LT |
825 | } |
826 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
827 | /* null target name indicates to use *SMBSERVR default called name |
828 | if we end up sending RFC1001 session initialize */ | |
829 | vol->target_rfc1001_name[0] = 0; | |
1da177e4 LT |
830 | vol->linux_uid = current->uid; /* current->euid instead? */ |
831 | vol->linux_gid = current->gid; | |
832 | vol->dir_mode = S_IRWXUGO; | |
833 | /* 2767 perms indicate mandatory locking support */ | |
7505e052 | 834 | vol->file_mode = (S_IRWXUGO | S_ISGID) & (~S_IXGRP); |
1da177e4 LT |
835 | |
836 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
4b18f2a9 | 837 | vol->rw = true; |
ac67055e JA |
838 | /* default is always to request posix paths. */ |
839 | vol->posix_paths = 1; | |
840 | ||
1da177e4 LT |
841 | if (!options) |
842 | return 1; | |
843 | ||
50c2f753 | 844 | if (strncmp(options, "sep=", 4) == 0) { |
fb8c4b14 | 845 | if (options[4] != 0) { |
1da177e4 LT |
846 | separator[0] = options[4]; |
847 | options += 5; | |
848 | } else { | |
467a8f8d | 849 | cFYI(1, ("Null separator not allowed")); |
1da177e4 LT |
850 | } |
851 | } | |
50c2f753 | 852 | |
1da177e4 LT |
853 | while ((data = strsep(&options, separator)) != NULL) { |
854 | if (!*data) | |
855 | continue; | |
856 | if ((value = strchr(data, '=')) != NULL) | |
857 | *value++ = '\0'; | |
858 | ||
50c2f753 SF |
859 | /* Have to parse this before we parse for "user" */ |
860 | if (strnicmp(data, "user_xattr", 10) == 0) { | |
1da177e4 | 861 | vol->no_xattr = 0; |
50c2f753 | 862 | } else if (strnicmp(data, "nouser_xattr", 12) == 0) { |
1da177e4 LT |
863 | vol->no_xattr = 1; |
864 | } else if (strnicmp(data, "user", 4) == 0) { | |
4b952a9b | 865 | if (!value) { |
1da177e4 LT |
866 | printk(KERN_WARNING |
867 | "CIFS: invalid or missing username\n"); | |
868 | return 1; /* needs_arg; */ | |
fb8c4b14 | 869 | } else if (!*value) { |
4b952a9b SF |
870 | /* null user, ie anonymous, authentication */ |
871 | vol->nullauth = 1; | |
1da177e4 LT |
872 | } |
873 | if (strnlen(value, 200) < 200) { | |
874 | vol->username = value; | |
875 | } else { | |
876 | printk(KERN_WARNING "CIFS: username too long\n"); | |
877 | return 1; | |
878 | } | |
879 | } else if (strnicmp(data, "pass", 4) == 0) { | |
880 | if (!value) { | |
881 | vol->password = NULL; | |
882 | continue; | |
fb8c4b14 | 883 | } else if (value[0] == 0) { |
1da177e4 LT |
884 | /* check if string begins with double comma |
885 | since that would mean the password really | |
886 | does start with a comma, and would not | |
887 | indicate an empty string */ | |
fb8c4b14 | 888 | if (value[1] != separator[0]) { |
1da177e4 LT |
889 | vol->password = NULL; |
890 | continue; | |
891 | } | |
892 | } | |
893 | temp_len = strlen(value); | |
894 | /* removed password length check, NTLM passwords | |
895 | can be arbitrarily long */ | |
896 | ||
50c2f753 | 897 | /* if comma in password, the string will be |
1da177e4 LT |
898 | prematurely null terminated. Commas in password are |
899 | specified across the cifs mount interface by a double | |
900 | comma ie ,, and a comma used as in other cases ie ',' | |
901 | as a parameter delimiter/separator is single and due | |
902 | to the strsep above is temporarily zeroed. */ | |
903 | ||
904 | /* NB: password legally can have multiple commas and | |
905 | the only illegal character in a password is null */ | |
906 | ||
50c2f753 | 907 | if ((value[temp_len] == 0) && |
09d1db5c | 908 | (value[temp_len+1] == separator[0])) { |
1da177e4 LT |
909 | /* reinsert comma */ |
910 | value[temp_len] = separator[0]; | |
50c2f753 SF |
911 | temp_len += 2; /* move after second comma */ |
912 | while (value[temp_len] != 0) { | |
1da177e4 | 913 | if (value[temp_len] == separator[0]) { |
50c2f753 | 914 | if (value[temp_len+1] == |
09d1db5c SF |
915 | separator[0]) { |
916 | /* skip second comma */ | |
917 | temp_len++; | |
50c2f753 | 918 | } else { |
1da177e4 LT |
919 | /* single comma indicating start |
920 | of next parm */ | |
921 | break; | |
922 | } | |
923 | } | |
924 | temp_len++; | |
925 | } | |
fb8c4b14 | 926 | if (value[temp_len] == 0) { |
1da177e4 LT |
927 | options = NULL; |
928 | } else { | |
929 | value[temp_len] = 0; | |
930 | /* point option to start of next parm */ | |
931 | options = value + temp_len + 1; | |
932 | } | |
50c2f753 | 933 | /* go from value to value + temp_len condensing |
1da177e4 LT |
934 | double commas to singles. Note that this ends up |
935 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 936 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
fb8c4b14 | 937 | if (vol->password == NULL) { |
50c2f753 SF |
938 | printk(KERN_WARNING "CIFS: no memory " |
939 | "for password\n"); | |
433dc24f SF |
940 | return 1; |
941 | } | |
50c2f753 | 942 | for (i = 0, j = 0; i < temp_len; i++, j++) { |
1da177e4 | 943 | vol->password[j] = value[i]; |
fb8c4b14 | 944 | if (value[i] == separator[0] |
09d1db5c | 945 | && value[i+1] == separator[0]) { |
1da177e4 LT |
946 | /* skip second comma */ |
947 | i++; | |
948 | } | |
949 | } | |
950 | vol->password[j] = 0; | |
951 | } else { | |
e915fc49 | 952 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
fb8c4b14 | 953 | if (vol->password == NULL) { |
50c2f753 SF |
954 | printk(KERN_WARNING "CIFS: no memory " |
955 | "for password\n"); | |
433dc24f SF |
956 | return 1; |
957 | } | |
1da177e4 LT |
958 | strcpy(vol->password, value); |
959 | } | |
960 | } else if (strnicmp(data, "ip", 2) == 0) { | |
961 | if (!value || !*value) { | |
962 | vol->UNCip = NULL; | |
963 | } else if (strnlen(value, 35) < 35) { | |
964 | vol->UNCip = value; | |
965 | } else { | |
50c2f753 SF |
966 | printk(KERN_WARNING "CIFS: ip address " |
967 | "too long\n"); | |
1da177e4 LT |
968 | return 1; |
969 | } | |
50c2f753 SF |
970 | } else if (strnicmp(data, "sec", 3) == 0) { |
971 | if (!value || !*value) { | |
972 | cERROR(1, ("no security value specified")); | |
973 | continue; | |
974 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
975 | vol->secFlg |= CIFSSEC_MAY_KRB5 | | |
189acaae | 976 | CIFSSEC_MUST_SIGN; |
bf820679 | 977 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
50c2f753 SF |
978 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
979 | CIFSSEC_MAY_KRB5; */ | |
980 | cERROR(1, ("Krb5 cifs privacy not supported")); | |
bf820679 SF |
981 | return 1; |
982 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 983 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
bf820679 | 984 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 985 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 986 | CIFSSEC_MUST_SIGN; |
bf820679 | 987 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 988 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 989 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 990 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 991 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
992 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
993 | /* ntlm is default so can be turned off too */ | |
750d1151 | 994 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 995 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 996 | /* BB is there a better way to do this? */ |
750d1151 | 997 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
998 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
999 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
50c2f753 | 1000 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 1001 | #endif |
bf820679 | 1002 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 1003 | vol->nullauth = 1; |
50c2f753 SF |
1004 | } else { |
1005 | cERROR(1, ("bad security option: %s", value)); | |
1006 | return 1; | |
1007 | } | |
1da177e4 LT |
1008 | } else if ((strnicmp(data, "unc", 3) == 0) |
1009 | || (strnicmp(data, "target", 6) == 0) | |
1010 | || (strnicmp(data, "path", 4) == 0)) { | |
1011 | if (!value || !*value) { | |
50c2f753 SF |
1012 | printk(KERN_WARNING "CIFS: invalid path to " |
1013 | "network resource\n"); | |
1da177e4 LT |
1014 | return 1; /* needs_arg; */ |
1015 | } | |
1016 | if ((temp_len = strnlen(value, 300)) < 300) { | |
50c2f753 | 1017 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1018 | if (vol->UNC == NULL) |
1da177e4 | 1019 | return 1; |
50c2f753 | 1020 | strcpy(vol->UNC, value); |
1da177e4 LT |
1021 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1022 | vol->UNC[0] = '\\'; | |
1023 | vol->UNC[1] = '\\'; | |
50c2f753 | 1024 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
1da177e4 | 1025 | printk(KERN_WARNING |
50c2f753 SF |
1026 | "CIFS: UNC Path does not begin " |
1027 | "with // or \\\\ \n"); | |
1da177e4 LT |
1028 | return 1; |
1029 | } | |
1030 | } else { | |
1031 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1032 | return 1; | |
1033 | } | |
1034 | } else if ((strnicmp(data, "domain", 3) == 0) | |
1035 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
1036 | if (!value || !*value) { | |
1037 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
1038 | return 1; /* needs_arg; */ | |
1039 | } | |
1040 | /* BB are there cases in which a comma can be valid in | |
1041 | a domain name and need special handling? */ | |
3979877e | 1042 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
1043 | vol->domainname = value; |
1044 | cFYI(1, ("Domain name set")); | |
1045 | } else { | |
50c2f753 SF |
1046 | printk(KERN_WARNING "CIFS: domain name too " |
1047 | "long\n"); | |
1da177e4 LT |
1048 | return 1; |
1049 | } | |
50c2f753 SF |
1050 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
1051 | if (!value || !*value) { | |
1052 | printk(KERN_WARNING | |
1053 | "CIFS: invalid path prefix\n"); | |
1054 | return 1; /* needs_argument */ | |
1055 | } | |
1056 | if ((temp_len = strnlen(value, 1024)) < 1024) { | |
4523cc30 | 1057 | if (value[0] != '/') |
2fe87f02 | 1058 | temp_len++; /* missing leading slash */ |
50c2f753 SF |
1059 | vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); |
1060 | if (vol->prepath == NULL) | |
1061 | return 1; | |
4523cc30 | 1062 | if (value[0] != '/') { |
2fe87f02 | 1063 | vol->prepath[0] = '/'; |
50c2f753 | 1064 | strcpy(vol->prepath+1, value); |
2fe87f02 | 1065 | } else |
50c2f753 SF |
1066 | strcpy(vol->prepath, value); |
1067 | cFYI(1, ("prefix path %s", vol->prepath)); | |
1068 | } else { | |
1069 | printk(KERN_WARNING "CIFS: prefix too long\n"); | |
1070 | return 1; | |
1071 | } | |
1da177e4 LT |
1072 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
1073 | if (!value || !*value) { | |
63135e08 SF |
1074 | printk(KERN_WARNING "CIFS: invalid iocharset " |
1075 | "specified\n"); | |
1da177e4 LT |
1076 | return 1; /* needs_arg; */ |
1077 | } | |
1078 | if (strnlen(value, 65) < 65) { | |
50c2f753 | 1079 | if (strnicmp(value, "default", 7)) |
1da177e4 | 1080 | vol->iocharset = value; |
50c2f753 SF |
1081 | /* if iocharset not set then load_nls_default |
1082 | is used by caller */ | |
1083 | cFYI(1, ("iocharset set to %s", value)); | |
1da177e4 | 1084 | } else { |
63135e08 SF |
1085 | printk(KERN_WARNING "CIFS: iocharset name " |
1086 | "too long.\n"); | |
1da177e4 LT |
1087 | return 1; |
1088 | } | |
1089 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1090 | if (value && *value) { | |
1091 | vol->linux_uid = | |
1092 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1093 | vol->override_uid = 1; |
1da177e4 LT |
1094 | } |
1095 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1096 | if (value && *value) { | |
1097 | vol->linux_gid = | |
1098 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1099 | vol->override_gid = 1; |
1da177e4 LT |
1100 | } |
1101 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1102 | if (value && *value) { | |
1103 | vol->file_mode = | |
1104 | simple_strtoul(value, &value, 0); | |
1105 | } | |
1106 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1107 | if (value && *value) { | |
1108 | vol->dir_mode = | |
1109 | simple_strtoul(value, &value, 0); | |
1110 | } | |
1111 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1112 | if (value && *value) { | |
1113 | vol->dir_mode = | |
1114 | simple_strtoul(value, &value, 0); | |
1115 | } | |
1116 | } else if (strnicmp(data, "port", 4) == 0) { | |
1117 | if (value && *value) { | |
1118 | vol->port = | |
1119 | simple_strtoul(value, &value, 0); | |
1120 | } | |
1121 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1122 | if (value && *value) { | |
1123 | vol->rsize = | |
1124 | simple_strtoul(value, &value, 0); | |
1125 | } | |
1126 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1127 | if (value && *value) { | |
1128 | vol->wsize = | |
1129 | simple_strtoul(value, &value, 0); | |
1130 | } | |
1131 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1132 | if (value && *value) { | |
1133 | vol->sockopt = | |
1134 | simple_strtoul(value, &value, 0); | |
1135 | } | |
1136 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1137 | if (!value || !*value || (*value == ' ')) { | |
63135e08 | 1138 | cFYI(1, ("invalid (empty) netbiosname")); |
1da177e4 | 1139 | } else { |
50c2f753 SF |
1140 | memset(vol->source_rfc1001_name, 0x20, 15); |
1141 | for (i = 0; i < 15; i++) { | |
1142 | /* BB are there cases in which a comma can be | |
1da177e4 LT |
1143 | valid in this workstation netbios name (and need |
1144 | special handling)? */ | |
1145 | ||
1146 | /* We do not uppercase netbiosname for user */ | |
50c2f753 | 1147 | if (value[i] == 0) |
1da177e4 | 1148 | break; |
50c2f753 SF |
1149 | else |
1150 | vol->source_rfc1001_name[i] = | |
1151 | value[i]; | |
1da177e4 LT |
1152 | } |
1153 | /* The string has 16th byte zero still from | |
1154 | set at top of the function */ | |
50c2f753 SF |
1155 | if ((i == 15) && (value[i] != 0)) |
1156 | printk(KERN_WARNING "CIFS: netbiosname" | |
1157 | " longer than 15 truncated.\n"); | |
a10faeb2 SF |
1158 | } |
1159 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1160 | /* servernetbiosname specified override *SMBSERVER */ | |
1161 | if (!value || !*value || (*value == ' ')) { | |
467a8f8d | 1162 | cFYI(1, ("empty server netbiosname specified")); |
a10faeb2 SF |
1163 | } else { |
1164 | /* last byte, type, is 0x20 for servr type */ | |
50c2f753 | 1165 | memset(vol->target_rfc1001_name, 0x20, 16); |
a10faeb2 | 1166 | |
50c2f753 | 1167 | for (i = 0; i < 15; i++) { |
a10faeb2 | 1168 | /* BB are there cases in which a comma can be |
50c2f753 SF |
1169 | valid in this workstation netbios name |
1170 | (and need special handling)? */ | |
a10faeb2 | 1171 | |
50c2f753 SF |
1172 | /* user or mount helper must uppercase |
1173 | the netbiosname */ | |
1174 | if (value[i] == 0) | |
a10faeb2 SF |
1175 | break; |
1176 | else | |
50c2f753 SF |
1177 | vol->target_rfc1001_name[i] = |
1178 | value[i]; | |
a10faeb2 SF |
1179 | } |
1180 | /* The string has 16th byte zero still from | |
1181 | set at top of the function */ | |
50c2f753 SF |
1182 | if ((i == 15) && (value[i] != 0)) |
1183 | printk(KERN_WARNING "CIFS: server net" | |
1184 | "biosname longer than 15 truncated.\n"); | |
1da177e4 LT |
1185 | } |
1186 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1187 | /* ignore */ | |
1188 | } else if (strnicmp(data, "version", 3) == 0) { | |
1189 | /* ignore */ | |
50c2f753 | 1190 | } else if (strnicmp(data, "guest", 5) == 0) { |
1da177e4 LT |
1191 | /* ignore */ |
1192 | } else if (strnicmp(data, "rw", 2) == 0) { | |
4b18f2a9 | 1193 | vol->rw = true; |
1da177e4 LT |
1194 | } else if ((strnicmp(data, "suid", 4) == 0) || |
1195 | (strnicmp(data, "nosuid", 6) == 0) || | |
1196 | (strnicmp(data, "exec", 4) == 0) || | |
1197 | (strnicmp(data, "noexec", 6) == 0) || | |
1198 | (strnicmp(data, "nodev", 5) == 0) || | |
1199 | (strnicmp(data, "noauto", 6) == 0) || | |
1200 | (strnicmp(data, "dev", 3) == 0)) { | |
1201 | /* The mount tool or mount.cifs helper (if present) | |
50c2f753 SF |
1202 | uses these opts to set flags, and the flags are read |
1203 | by the kernel vfs layer before we get here (ie | |
1204 | before read super) so there is no point trying to | |
1205 | parse these options again and set anything and it | |
1206 | is ok to just ignore them */ | |
1da177e4 LT |
1207 | continue; |
1208 | } else if (strnicmp(data, "ro", 2) == 0) { | |
4b18f2a9 | 1209 | vol->rw = false; |
1da177e4 LT |
1210 | } else if (strnicmp(data, "hard", 4) == 0) { |
1211 | vol->retry = 1; | |
1212 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1213 | vol->retry = 0; | |
1214 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1215 | vol->noperm = 0; | |
1216 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1217 | vol->noperm = 1; | |
6a0b4824 SF |
1218 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1219 | vol->remap = 1; | |
1220 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1221 | vol->remap = 0; | |
50c2f753 SF |
1222 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1223 | vol->sfu_emul = 1; | |
1224 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1225 | vol->sfu_emul = 0; | |
ac67055e JA |
1226 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1227 | vol->posix_paths = 1; | |
1228 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1229 | vol->posix_paths = 0; | |
c18c842b SF |
1230 | } else if (strnicmp(data, "nounix", 6) == 0) { |
1231 | vol->no_linux_ext = 1; | |
1232 | } else if (strnicmp(data, "nolinux", 7) == 0) { | |
1233 | vol->no_linux_ext = 1; | |
50c2f753 | 1234 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
a10faeb2 | 1235 | (strnicmp(data, "ignorecase", 10) == 0)) { |
50c2f753 | 1236 | vol->nocase = 1; |
c46fa8ac SF |
1237 | } else if (strnicmp(data, "brl", 3) == 0) { |
1238 | vol->nobrl = 0; | |
50c2f753 | 1239 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1240 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1241 | vol->nobrl = 1; |
d3485d37 SF |
1242 | /* turn off mandatory locking in mode |
1243 | if remote locking is turned off since the | |
1244 | local vfs will do advisory */ | |
50c2f753 SF |
1245 | if (vol->file_mode == |
1246 | (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
d3485d37 | 1247 | vol->file_mode = S_IALLUGO; |
1da177e4 LT |
1248 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1249 | vol->setuids = 1; | |
1250 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1251 | vol->setuids = 0; | |
d0a9c078 JL |
1252 | } else if (strnicmp(data, "dynperm", 7) == 0) { |
1253 | vol->dynperm = true; | |
1254 | } else if (strnicmp(data, "nodynperm", 9) == 0) { | |
1255 | vol->dynperm = false; | |
1da177e4 LT |
1256 | } else if (strnicmp(data, "nohard", 6) == 0) { |
1257 | vol->retry = 0; | |
1258 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1259 | vol->retry = 1; | |
1260 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1261 | vol->intr = 0; | |
1262 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1263 | vol->intr = 1; | |
50c2f753 | 1264 | } else if (strnicmp(data, "serverino", 7) == 0) { |
1da177e4 | 1265 | vol->server_ino = 1; |
50c2f753 | 1266 | } else if (strnicmp(data, "noserverino", 9) == 0) { |
1da177e4 | 1267 | vol->server_ino = 0; |
50c2f753 | 1268 | } else if (strnicmp(data, "cifsacl", 7) == 0) { |
0a4b92c0 SF |
1269 | vol->cifs_acl = 1; |
1270 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1271 | vol->cifs_acl = 0; | |
50c2f753 | 1272 | } else if (strnicmp(data, "acl", 3) == 0) { |
1da177e4 | 1273 | vol->no_psx_acl = 0; |
50c2f753 | 1274 | } else if (strnicmp(data, "noacl", 5) == 0) { |
1da177e4 | 1275 | vol->no_psx_acl = 1; |
50c2f753 | 1276 | } else if (strnicmp(data, "sign", 4) == 0) { |
750d1151 | 1277 | vol->secFlg |= CIFSSEC_MUST_SIGN; |
95b1cb90 SF |
1278 | } else if (strnicmp(data, "seal", 4) == 0) { |
1279 | /* we do not do the following in secFlags because seal | |
1280 | is a per tree connection (mount) not a per socket | |
1281 | or per-smb connection option in the protocol */ | |
1282 | /* vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
1283 | vol->seal = 1; | |
50c2f753 | 1284 | } else if (strnicmp(data, "direct", 6) == 0) { |
1da177e4 | 1285 | vol->direct_io = 1; |
50c2f753 | 1286 | } else if (strnicmp(data, "forcedirectio", 13) == 0) { |
1da177e4 | 1287 | vol->direct_io = 1; |
50c2f753 | 1288 | } else if (strnicmp(data, "in6_addr", 8) == 0) { |
1da177e4 LT |
1289 | if (!value || !*value) { |
1290 | vol->in6_addr = NULL; | |
1291 | } else if (strnlen(value, 49) == 48) { | |
1292 | vol->in6_addr = value; | |
1293 | } else { | |
50c2f753 SF |
1294 | printk(KERN_WARNING "CIFS: ip v6 address not " |
1295 | "48 characters long\n"); | |
1da177e4 LT |
1296 | return 1; |
1297 | } | |
1298 | } else if (strnicmp(data, "noac", 4) == 0) { | |
50c2f753 SF |
1299 | printk(KERN_WARNING "CIFS: Mount option noac not " |
1300 | "supported. Instead set " | |
1301 | "/proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1da177e4 | 1302 | } else |
50c2f753 SF |
1303 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n", |
1304 | data); | |
1da177e4 LT |
1305 | } |
1306 | if (vol->UNC == NULL) { | |
4523cc30 | 1307 | if (devname == NULL) { |
50c2f753 SF |
1308 | printk(KERN_WARNING "CIFS: Missing UNC name for mount " |
1309 | "target\n"); | |
1da177e4 LT |
1310 | return 1; |
1311 | } | |
1312 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
50c2f753 | 1313 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1314 | if (vol->UNC == NULL) |
1da177e4 | 1315 | return 1; |
50c2f753 | 1316 | strcpy(vol->UNC, devname); |
1da177e4 LT |
1317 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1318 | vol->UNC[0] = '\\'; | |
1319 | vol->UNC[1] = '\\'; | |
1320 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
50c2f753 SF |
1321 | printk(KERN_WARNING "CIFS: UNC Path does not " |
1322 | "begin with // or \\\\ \n"); | |
1da177e4 LT |
1323 | return 1; |
1324 | } | |
7c5e628f IM |
1325 | value = strpbrk(vol->UNC+2, "/\\"); |
1326 | if (value) | |
1327 | *value = '\\'; | |
1da177e4 LT |
1328 | } else { |
1329 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1330 | return 1; | |
1331 | } | |
1332 | } | |
fb8c4b14 | 1333 | if (vol->UNCip == NULL) |
1da177e4 LT |
1334 | vol->UNCip = &vol->UNC[2]; |
1335 | ||
1336 | return 0; | |
1337 | } | |
1338 | ||
1339 | static struct cifsSesInfo * | |
50c2f753 | 1340 | cifs_find_tcp_session(struct in_addr *target_ip_addr, |
1b20d672 CG |
1341 | struct in6_addr *target_ip6_addr, |
1342 | char *userName, struct TCP_Server_Info **psrvTcp) | |
1da177e4 LT |
1343 | { |
1344 | struct list_head *tmp; | |
1345 | struct cifsSesInfo *ses; | |
1b20d672 | 1346 | |
1da177e4 | 1347 | *psrvTcp = NULL; |
1da177e4 | 1348 | |
1b20d672 | 1349 | read_lock(&GlobalSMBSeslock); |
1da177e4 LT |
1350 | list_for_each(tmp, &GlobalSMBSessionList) { |
1351 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
1b20d672 CG |
1352 | if (!ses->server) |
1353 | continue; | |
1354 | ||
1355 | if (target_ip_addr && | |
1356 | ses->server->addr.sockAddr.sin_addr.s_addr != target_ip_addr->s_addr) | |
1357 | continue; | |
1358 | else if (target_ip6_addr && | |
1359 | memcmp(&ses->server->addr.sockAddr6.sin6_addr, | |
1360 | target_ip6_addr, sizeof(*target_ip6_addr))) | |
1361 | continue; | |
02eadeff | 1362 | /* BB lock server and tcp session; increment use count here?? */ |
1b20d672 CG |
1363 | |
1364 | /* found a match on the TCP session */ | |
1365 | *psrvTcp = ses->server; | |
1366 | ||
1367 | /* BB check if reconnection needed */ | |
1368 | if (strncmp(ses->userName, userName, MAX_USERNAME_SIZE) == 0) { | |
1369 | read_unlock(&GlobalSMBSeslock); | |
1370 | /* Found exact match on both TCP and | |
1371 | SMB sessions */ | |
1372 | return ses; | |
1da177e4 LT |
1373 | } |
1374 | /* else tcp and smb sessions need reconnection */ | |
1375 | } | |
1376 | read_unlock(&GlobalSMBSeslock); | |
1b20d672 | 1377 | |
1da177e4 LT |
1378 | return NULL; |
1379 | } | |
1380 | ||
1381 | static struct cifsTconInfo * | |
1382 | find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) | |
1383 | { | |
1384 | struct list_head *tmp; | |
1385 | struct cifsTconInfo *tcon; | |
dea570e0 | 1386 | __be32 old_ip; |
1da177e4 LT |
1387 | |
1388 | read_lock(&GlobalSMBSeslock); | |
dea570e0 | 1389 | |
1da177e4 | 1390 | list_for_each(tmp, &GlobalTreeConnectionList) { |
e466e487 | 1391 | cFYI(1, ("Next tcon")); |
1da177e4 | 1392 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); |
dea570e0 SF |
1393 | if (!tcon->ses || !tcon->ses->server) |
1394 | continue; | |
1395 | ||
1396 | old_ip = tcon->ses->server->addr.sockAddr.sin_addr.s_addr; | |
1397 | cFYI(1, ("old ip addr: %x == new ip %x ?", | |
1398 | old_ip, new_target_ip_addr)); | |
1399 | ||
1400 | if (old_ip != new_target_ip_addr) | |
1401 | continue; | |
1402 | ||
1403 | /* BB lock tcon, server, tcp session and increment use count? */ | |
1404 | /* found a match on the TCP session */ | |
1405 | /* BB check if reconnection needed */ | |
1406 | cFYI(1, ("IP match, old UNC: %s new: %s", | |
1407 | tcon->treeName, uncName)); | |
1408 | ||
1409 | if (strncmp(tcon->treeName, uncName, MAX_TREE_SIZE)) | |
1410 | continue; | |
1411 | ||
1412 | cFYI(1, ("and old usr: %s new: %s", | |
1413 | tcon->treeName, uncName)); | |
1414 | ||
1415 | if (strncmp(tcon->ses->userName, userName, MAX_USERNAME_SIZE)) | |
1416 | continue; | |
1417 | ||
1418 | /* matched smb session (user name) */ | |
1419 | read_unlock(&GlobalSMBSeslock); | |
1420 | return tcon; | |
1da177e4 | 1421 | } |
dea570e0 | 1422 | |
1da177e4 LT |
1423 | read_unlock(&GlobalSMBSeslock); |
1424 | return NULL; | |
1425 | } | |
1426 | ||
1da177e4 | 1427 | int |
50c2f753 SF |
1428 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, |
1429 | const struct nls_table *nls_codepage, unsigned int *pnum_referrals, | |
366781c1 | 1430 | struct dfs_info3_param **preferrals, int remap) |
1da177e4 LT |
1431 | { |
1432 | char *temp_unc; | |
1433 | int rc = 0; | |
1434 | ||
1435 | *pnum_referrals = 0; | |
366781c1 | 1436 | *preferrals = NULL; |
1da177e4 LT |
1437 | |
1438 | if (pSesInfo->ipc_tid == 0) { | |
1439 | temp_unc = kmalloc(2 /* for slashes */ + | |
50c2f753 SF |
1440 | strnlen(pSesInfo->serverName, |
1441 | SERVER_NAME_LEN_WITH_NULL * 2) | |
1da177e4 LT |
1442 | + 1 + 4 /* slash IPC$ */ + 2, |
1443 | GFP_KERNEL); | |
1444 | if (temp_unc == NULL) | |
1445 | return -ENOMEM; | |
1446 | temp_unc[0] = '\\'; | |
1447 | temp_unc[1] = '\\'; | |
1448 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1449 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1450 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1451 | cFYI(1, | |
50c2f753 | 1452 | ("CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid)); |
1da177e4 LT |
1453 | kfree(temp_unc); |
1454 | } | |
1455 | if (rc == 0) | |
c2cf07d5 | 1456 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, |
737b758c | 1457 | pnum_referrals, nls_codepage, remap); |
366781c1 SF |
1458 | /* BB map targetUNCs to dfs_info3 structures, here or |
1459 | in CIFSGetDFSRefer BB */ | |
1da177e4 LT |
1460 | |
1461 | return rc; | |
1462 | } | |
1463 | ||
09e50d55 JL |
1464 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
1465 | static struct lock_class_key cifs_key[2]; | |
1466 | static struct lock_class_key cifs_slock_key[2]; | |
1467 | ||
1468 | static inline void | |
1469 | cifs_reclassify_socket4(struct socket *sock) | |
1470 | { | |
1471 | struct sock *sk = sock->sk; | |
1472 | BUG_ON(sock_owned_by_user(sk)); | |
1473 | sock_lock_init_class_and_name(sk, "slock-AF_INET-CIFS", | |
1474 | &cifs_slock_key[0], "sk_lock-AF_INET-CIFS", &cifs_key[0]); | |
1475 | } | |
1476 | ||
1477 | static inline void | |
1478 | cifs_reclassify_socket6(struct socket *sock) | |
1479 | { | |
1480 | struct sock *sk = sock->sk; | |
1481 | BUG_ON(sock_owned_by_user(sk)); | |
1482 | sock_lock_init_class_and_name(sk, "slock-AF_INET6-CIFS", | |
1483 | &cifs_slock_key[1], "sk_lock-AF_INET6-CIFS", &cifs_key[1]); | |
1484 | } | |
1485 | #else | |
1486 | static inline void | |
1487 | cifs_reclassify_socket4(struct socket *sock) | |
1488 | { | |
1489 | } | |
1490 | ||
1491 | static inline void | |
1492 | cifs_reclassify_socket6(struct socket *sock) | |
1493 | { | |
1494 | } | |
1495 | #endif | |
1496 | ||
1da177e4 | 1497 | /* See RFC1001 section 14 on representation of Netbios names */ |
50c2f753 | 1498 | static void rfc1002mangle(char *target, char *source, unsigned int length) |
1da177e4 | 1499 | { |
50c2f753 | 1500 | unsigned int i, j; |
1da177e4 | 1501 | |
50c2f753 | 1502 | for (i = 0, j = 0; i < (length); i++) { |
1da177e4 LT |
1503 | /* mask a nibble at a time and encode */ |
1504 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1505 | target[j+1] = 'A' + (0x0F & source[i]); | |
50c2f753 | 1506 | j += 2; |
1da177e4 LT |
1507 | } |
1508 | ||
1509 | } | |
1510 | ||
1511 | ||
1512 | static int | |
50c2f753 SF |
1513 | ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, |
1514 | char *netbios_name, char *target_name) | |
1da177e4 LT |
1515 | { |
1516 | int rc = 0; | |
1517 | int connected = 0; | |
1518 | __be16 orig_port = 0; | |
1519 | ||
fb8c4b14 | 1520 | if (*csocket == NULL) { |
50c2f753 SF |
1521 | rc = sock_create_kern(PF_INET, SOCK_STREAM, |
1522 | IPPROTO_TCP, csocket); | |
1da177e4 | 1523 | if (rc < 0) { |
50c2f753 | 1524 | cERROR(1, ("Error %d creating socket", rc)); |
1da177e4 LT |
1525 | *csocket = NULL; |
1526 | return rc; | |
1527 | } else { | |
1528 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
467a8f8d | 1529 | cFYI(1, ("Socket created")); |
50c2f753 | 1530 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
09e50d55 | 1531 | cifs_reclassify_socket4(*csocket); |
1da177e4 LT |
1532 | } |
1533 | } | |
1534 | ||
1535 | psin_server->sin_family = AF_INET; | |
fb8c4b14 | 1536 | if (psin_server->sin_port) { /* user overrode default port */ |
1da177e4 LT |
1537 | rc = (*csocket)->ops->connect(*csocket, |
1538 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1539 | sizeof(struct sockaddr_in), 0); |
1da177e4 LT |
1540 | if (rc >= 0) |
1541 | connected = 1; | |
50c2f753 | 1542 | } |
1da177e4 | 1543 | |
fb8c4b14 | 1544 | if (!connected) { |
50c2f753 | 1545 | /* save original port so we can retry user specified port |
1da177e4 LT |
1546 | later if fall back ports fail this time */ |
1547 | orig_port = psin_server->sin_port; | |
1548 | ||
1549 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1550 | if (psin_server->sin_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1551 | psin_server->sin_port = htons(CIFS_PORT); |
1552 | ||
1553 | rc = (*csocket)->ops->connect(*csocket, | |
1554 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1555 | sizeof(struct sockaddr_in), 0); |
1da177e4 LT |
1556 | if (rc >= 0) |
1557 | connected = 1; | |
1558 | } | |
1559 | } | |
1560 | if (!connected) { | |
1561 | psin_server->sin_port = htons(RFC1001_PORT); | |
1562 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
50c2f753 | 1563 | psin_server, |
6345a3a8 | 1564 | sizeof(struct sockaddr_in), 0); |
50c2f753 | 1565 | if (rc >= 0) |
1da177e4 LT |
1566 | connected = 1; |
1567 | } | |
1568 | ||
1569 | /* give up here - unless we want to retry on different | |
1570 | protocol families some day */ | |
1571 | if (!connected) { | |
fb8c4b14 | 1572 | if (orig_port) |
1da177e4 | 1573 | psin_server->sin_port = orig_port; |
50c2f753 | 1574 | cFYI(1, ("Error %d connecting to server via ipv4", rc)); |
1da177e4 LT |
1575 | sock_release(*csocket); |
1576 | *csocket = NULL; | |
1577 | return rc; | |
1578 | } | |
50c2f753 SF |
1579 | /* Eventually check for other socket options to change from |
1580 | the default. sock_setsockopt not used because it expects | |
1da177e4 | 1581 | user space buffer */ |
50c2f753 SF |
1582 | cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", |
1583 | (*csocket)->sk->sk_sndbuf, | |
b387eaeb | 1584 | (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo)); |
1da177e4 | 1585 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; |
b387eaeb | 1586 | /* make the bufsizes depend on wsize/rsize and max requests */ |
fb8c4b14 | 1587 | if ((*csocket)->sk->sk_sndbuf < (200 * 1024)) |
b387eaeb | 1588 | (*csocket)->sk->sk_sndbuf = 200 * 1024; |
fb8c4b14 | 1589 | if ((*csocket)->sk->sk_rcvbuf < (140 * 1024)) |
b387eaeb | 1590 | (*csocket)->sk->sk_rcvbuf = 140 * 1024; |
1da177e4 LT |
1591 | |
1592 | /* send RFC1001 sessinit */ | |
fb8c4b14 | 1593 | if (psin_server->sin_port == htons(RFC1001_PORT)) { |
1da177e4 | 1594 | /* some servers require RFC1001 sessinit before sending |
50c2f753 | 1595 | negprot - BB check reconnection in case where second |
1da177e4 | 1596 | sessinit is sent but no second negprot */ |
50c2f753 SF |
1597 | struct rfc1002_session_packet *ses_init_buf; |
1598 | struct smb_hdr *smb_buf; | |
1599 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), | |
1600 | GFP_KERNEL); | |
fb8c4b14 | 1601 | if (ses_init_buf) { |
1da177e4 | 1602 | ses_init_buf->trailer.session_req.called_len = 32; |
fb8c4b14 | 1603 | if (target_name && (target_name[0] != 0)) { |
a10faeb2 SF |
1604 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, |
1605 | target_name, 16); | |
1606 | } else { | |
1607 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
50c2f753 | 1608 | DEFAULT_CIFS_CALLED_NAME, 16); |
a10faeb2 SF |
1609 | } |
1610 | ||
1da177e4 LT |
1611 | ses_init_buf->trailer.session_req.calling_len = 32; |
1612 | /* calling name ends in null (byte 16) from old smb | |
1613 | convention. */ | |
50c2f753 | 1614 | if (netbios_name && (netbios_name[0] != 0)) { |
1da177e4 | 1615 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, |
50c2f753 | 1616 | netbios_name, 16); |
1da177e4 LT |
1617 | } else { |
1618 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
50c2f753 | 1619 | "LINUX_CIFS_CLNT", 16); |
1da177e4 LT |
1620 | } |
1621 | ses_init_buf->trailer.session_req.scope1 = 0; | |
1622 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1623 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1624 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1625 | smb_buf->smb_buf_length = 0x81000044; | |
1626 | rc = smb_send(*csocket, smb_buf, 0x44, | |
1627 | (struct sockaddr *)psin_server); | |
1628 | kfree(ses_init_buf); | |
50c2f753 | 1629 | msleep(1); /* RFC1001 layer in at least one server |
083d3a2c SF |
1630 | requires very short break before negprot |
1631 | presumably because not expecting negprot | |
1632 | to follow so fast. This is a simple | |
50c2f753 | 1633 | solution that works without |
083d3a2c SF |
1634 | complicating the code and causes no |
1635 | significant slowing down on mount | |
1636 | for everyone else */ | |
1da177e4 | 1637 | } |
50c2f753 | 1638 | /* else the negprot may still work without this |
1da177e4 | 1639 | even though malloc failed */ |
50c2f753 | 1640 | |
1da177e4 | 1641 | } |
50c2f753 | 1642 | |
1da177e4 LT |
1643 | return rc; |
1644 | } | |
1645 | ||
1646 | static int | |
1647 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket) | |
1648 | { | |
1649 | int rc = 0; | |
1650 | int connected = 0; | |
1651 | __be16 orig_port = 0; | |
1652 | ||
fb8c4b14 | 1653 | if (*csocket == NULL) { |
50c2f753 SF |
1654 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, |
1655 | IPPROTO_TCP, csocket); | |
1da177e4 | 1656 | if (rc < 0) { |
50c2f753 | 1657 | cERROR(1, ("Error %d creating ipv6 socket", rc)); |
1da177e4 LT |
1658 | *csocket = NULL; |
1659 | return rc; | |
1660 | } else { | |
1661 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
fb8c4b14 | 1662 | cFYI(1, ("ipv6 Socket created")); |
1da177e4 | 1663 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
09e50d55 | 1664 | cifs_reclassify_socket6(*csocket); |
1da177e4 LT |
1665 | } |
1666 | } | |
1667 | ||
1668 | psin_server->sin6_family = AF_INET6; | |
1669 | ||
fb8c4b14 | 1670 | if (psin_server->sin6_port) { /* user overrode default port */ |
1da177e4 LT |
1671 | rc = (*csocket)->ops->connect(*csocket, |
1672 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1673 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1674 | if (rc >= 0) |
1675 | connected = 1; | |
50c2f753 | 1676 | } |
1da177e4 | 1677 | |
fb8c4b14 | 1678 | if (!connected) { |
50c2f753 | 1679 | /* save original port so we can retry user specified port |
1da177e4 LT |
1680 | later if fall back ports fail this time */ |
1681 | ||
1682 | orig_port = psin_server->sin6_port; | |
1683 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1684 | if (psin_server->sin6_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1685 | psin_server->sin6_port = htons(CIFS_PORT); |
1686 | ||
1687 | rc = (*csocket)->ops->connect(*csocket, | |
1688 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1689 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1690 | if (rc >= 0) |
1691 | connected = 1; | |
1692 | } | |
1693 | } | |
1694 | if (!connected) { | |
1695 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1696 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
6345a3a8 | 1697 | psin_server, sizeof(struct sockaddr_in6), 0); |
50c2f753 | 1698 | if (rc >= 0) |
1da177e4 LT |
1699 | connected = 1; |
1700 | } | |
1701 | ||
1702 | /* give up here - unless we want to retry on different | |
1703 | protocol families some day */ | |
1704 | if (!connected) { | |
fb8c4b14 | 1705 | if (orig_port) |
1da177e4 | 1706 | psin_server->sin6_port = orig_port; |
50c2f753 | 1707 | cFYI(1, ("Error %d connecting to server via ipv6", rc)); |
1da177e4 LT |
1708 | sock_release(*csocket); |
1709 | *csocket = NULL; | |
1710 | return rc; | |
1711 | } | |
50c2f753 SF |
1712 | /* Eventually check for other socket options to change from |
1713 | the default. sock_setsockopt not used because it expects | |
1da177e4 LT |
1714 | user space buffer */ |
1715 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
50c2f753 | 1716 | |
1da177e4 LT |
1717 | return rc; |
1718 | } | |
1719 | ||
50c2f753 SF |
1720 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon, |
1721 | struct super_block *sb, struct smb_vol *vol_info) | |
8af18971 SF |
1722 | { |
1723 | /* if we are reconnecting then should we check to see if | |
1724 | * any requested capabilities changed locally e.g. via | |
1725 | * remount but we can not do much about it here | |
1726 | * if they have (even if we could detect it by the following) | |
1727 | * Perhaps we could add a backpointer to array of sb from tcon | |
1728 | * or if we change to make all sb to same share the same | |
1729 | * sb as NFS - then we only have one backpointer to sb. | |
1730 | * What if we wanted to mount the server share twice once with | |
1731 | * and once without posixacls or posix paths? */ | |
1732 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
50c2f753 | 1733 | |
c18c842b SF |
1734 | if (vol_info && vol_info->no_linux_ext) { |
1735 | tcon->fsUnixInfo.Capability = 0; | |
1736 | tcon->unix_ext = 0; /* Unix Extensions disabled */ | |
1737 | cFYI(1, ("Linux protocol extensions disabled")); | |
1738 | return; | |
1739 | } else if (vol_info) | |
1740 | tcon->unix_ext = 1; /* Unix Extensions supported */ | |
1741 | ||
1742 | if (tcon->unix_ext == 0) { | |
1743 | cFYI(1, ("Unix extensions disabled so not set on reconnect")); | |
1744 | return; | |
1745 | } | |
50c2f753 | 1746 | |
fb8c4b14 | 1747 | if (!CIFSSMBQFSUnixInfo(xid, tcon)) { |
8af18971 | 1748 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
50c2f753 | 1749 | |
8af18971 SF |
1750 | /* check for reconnect case in which we do not |
1751 | want to change the mount behavior if we can avoid it */ | |
fb8c4b14 | 1752 | if (vol_info == NULL) { |
50c2f753 | 1753 | /* turn off POSIX ACL and PATHNAMES if not set |
8af18971 SF |
1754 | originally at mount time */ |
1755 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) | |
1756 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
11b6d645 IM |
1757 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1758 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) | |
1759 | cERROR(1, ("POSIXPATH support change")); | |
8af18971 | 1760 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
11b6d645 IM |
1761 | } else if ((cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1762 | cERROR(1, ("possible reconnect error")); | |
1763 | cERROR(1, | |
1764 | ("server disabled POSIX path support")); | |
1765 | } | |
8af18971 | 1766 | } |
50c2f753 | 1767 | |
8af18971 | 1768 | cap &= CIFS_UNIX_CAP_MASK; |
75865f8c | 1769 | if (vol_info && vol_info->no_psx_acl) |
8af18971 | 1770 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
75865f8c | 1771 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
fb8c4b14 SF |
1772 | cFYI(1, ("negotiated posix acl support")); |
1773 | if (sb) | |
8af18971 SF |
1774 | sb->s_flags |= MS_POSIXACL; |
1775 | } | |
1776 | ||
75865f8c | 1777 | if (vol_info && vol_info->posix_paths == 0) |
8af18971 | 1778 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
75865f8c | 1779 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
fb8c4b14 | 1780 | cFYI(1, ("negotiate posix pathnames")); |
75865f8c | 1781 | if (sb) |
50c2f753 | 1782 | CIFS_SB(sb)->mnt_cifs_flags |= |
8af18971 SF |
1783 | CIFS_MOUNT_POSIX_PATHS; |
1784 | } | |
50c2f753 | 1785 | |
984acfe1 SF |
1786 | /* We might be setting the path sep back to a different |
1787 | form if we are reconnecting and the server switched its | |
50c2f753 | 1788 | posix path capability for this share */ |
75865f8c | 1789 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
984acfe1 | 1790 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
75865f8c SF |
1791 | |
1792 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { | |
1793 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { | |
1794 | CIFS_SB(sb)->rsize = 127 * 1024; | |
90c81e0b SF |
1795 | cFYI(DBG2, |
1796 | ("larger reads not supported by srv")); | |
75865f8c SF |
1797 | } |
1798 | } | |
50c2f753 SF |
1799 | |
1800 | ||
1801 | cFYI(1, ("Negotiate caps 0x%x", (int)cap)); | |
8af18971 | 1802 | #ifdef CONFIG_CIFS_DEBUG2 |
75865f8c | 1803 | if (cap & CIFS_UNIX_FCNTL_CAP) |
fb8c4b14 | 1804 | cFYI(1, ("FCNTL cap")); |
75865f8c | 1805 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
fb8c4b14 | 1806 | cFYI(1, ("EXTATTR cap")); |
75865f8c | 1807 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
fb8c4b14 | 1808 | cFYI(1, ("POSIX path cap")); |
75865f8c | 1809 | if (cap & CIFS_UNIX_XATTR_CAP) |
fb8c4b14 | 1810 | cFYI(1, ("XATTR cap")); |
75865f8c | 1811 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
fb8c4b14 | 1812 | cFYI(1, ("POSIX ACL cap")); |
75865f8c | 1813 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
fb8c4b14 | 1814 | cFYI(1, ("very large read cap")); |
75865f8c | 1815 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) |
fb8c4b14 | 1816 | cFYI(1, ("very large write cap")); |
8af18971 SF |
1817 | #endif /* CIFS_DEBUG2 */ |
1818 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
442aa310 | 1819 | if (vol_info == NULL) { |
5a44b319 | 1820 | cFYI(1, ("resetting capabilities failed")); |
442aa310 | 1821 | } else |
5a44b319 SF |
1822 | cERROR(1, ("Negotiating Unix capabilities " |
1823 | "with the server failed. Consider " | |
1824 | "mounting with the Unix Extensions\n" | |
1825 | "disabled, if problems are found, " | |
1826 | "by specifying the nounix mount " | |
2224f4e5 | 1827 | "option.")); |
5a44b319 | 1828 | |
8af18971 SF |
1829 | } |
1830 | } | |
1831 | } | |
1832 | ||
03a143c9 SF |
1833 | static void |
1834 | convert_delimiter(char *path, char delim) | |
1835 | { | |
1836 | int i; | |
c2d68ea6 | 1837 | char old_delim; |
03a143c9 SF |
1838 | |
1839 | if (path == NULL) | |
1840 | return; | |
1841 | ||
582d21e5 | 1842 | if (delim == '/') |
c2d68ea6 SF |
1843 | old_delim = '\\'; |
1844 | else | |
1845 | old_delim = '/'; | |
1846 | ||
03a143c9 | 1847 | for (i = 0; path[i] != '\0'; i++) { |
c2d68ea6 | 1848 | if (path[i] == old_delim) |
03a143c9 SF |
1849 | path[i] = delim; |
1850 | } | |
1851 | } | |
1852 | ||
1da177e4 LT |
1853 | int |
1854 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1855 | char *mount_data, const char *devname) | |
1856 | { | |
1857 | int rc = 0; | |
1858 | int xid; | |
1859 | int address_type = AF_INET; | |
1860 | struct socket *csocket = NULL; | |
1861 | struct sockaddr_in sin_server; | |
1862 | struct sockaddr_in6 sin_server6; | |
1863 | struct smb_vol volume_info; | |
1864 | struct cifsSesInfo *pSesInfo = NULL; | |
1865 | struct cifsSesInfo *existingCifsSes = NULL; | |
1866 | struct cifsTconInfo *tcon = NULL; | |
1867 | struct TCP_Server_Info *srvTcp = NULL; | |
1868 | ||
1869 | xid = GetXid(); | |
1870 | ||
1871 | /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ | |
50c2f753 SF |
1872 | |
1873 | memset(&volume_info, 0, sizeof(struct smb_vol)); | |
1da177e4 | 1874 | if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { |
70fe7dc0 JL |
1875 | rc = -EINVAL; |
1876 | goto out; | |
1da177e4 LT |
1877 | } |
1878 | ||
8426c39c | 1879 | if (volume_info.nullauth) { |
fb8c4b14 | 1880 | cFYI(1, ("null user")); |
9b8f5f57 | 1881 | volume_info.username = ""; |
8426c39c | 1882 | } else if (volume_info.username) { |
1da177e4 | 1883 | /* BB fixme parse for domain name here */ |
467a8f8d | 1884 | cFYI(1, ("Username: %s", volume_info.username)); |
1da177e4 | 1885 | } else { |
bf820679 | 1886 | cifserror("No username specified"); |
50c2f753 SF |
1887 | /* In userspace mount helper we can get user name from alternate |
1888 | locations such as env variables and files on disk */ | |
70fe7dc0 JL |
1889 | rc = -EINVAL; |
1890 | goto out; | |
1da177e4 LT |
1891 | } |
1892 | ||
1893 | if (volume_info.UNCip && volume_info.UNC) { | |
50c2f753 SF |
1894 | rc = cifs_inet_pton(AF_INET, volume_info.UNCip, |
1895 | &sin_server.sin_addr.s_addr); | |
1da177e4 | 1896 | |
fb8c4b14 | 1897 | if (rc <= 0) { |
1da177e4 | 1898 | /* not ipv4 address, try ipv6 */ |
50c2f753 SF |
1899 | rc = cifs_inet_pton(AF_INET6, volume_info.UNCip, |
1900 | &sin_server6.sin6_addr.in6_u); | |
fb8c4b14 | 1901 | if (rc > 0) |
1da177e4 LT |
1902 | address_type = AF_INET6; |
1903 | } else { | |
1904 | address_type = AF_INET; | |
1905 | } | |
50c2f753 | 1906 | |
fb8c4b14 | 1907 | if (rc <= 0) { |
1da177e4 | 1908 | /* we failed translating address */ |
70fe7dc0 JL |
1909 | rc = -EINVAL; |
1910 | goto out; | |
1da177e4 LT |
1911 | } |
1912 | ||
1913 | cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); | |
1914 | /* success */ | |
1915 | rc = 0; | |
50c2f753 SF |
1916 | } else if (volume_info.UNCip) { |
1917 | /* BB using ip addr as server name to connect to the | |
1918 | DFS root below */ | |
1919 | cERROR(1, ("Connecting to DFS root not implemented yet")); | |
70fe7dc0 JL |
1920 | rc = -EINVAL; |
1921 | goto out; | |
1da177e4 LT |
1922 | } else /* which servers DFS root would we conect to */ { |
1923 | cERROR(1, | |
50c2f753 SF |
1924 | ("CIFS mount error: No UNC path (e.g. -o " |
1925 | "unc=//192.168.1.100/public) specified")); | |
70fe7dc0 JL |
1926 | rc = -EINVAL; |
1927 | goto out; | |
1da177e4 LT |
1928 | } |
1929 | ||
1930 | /* this is needed for ASCII cp to Unicode converts */ | |
fb8c4b14 | 1931 | if (volume_info.iocharset == NULL) { |
1da177e4 LT |
1932 | cifs_sb->local_nls = load_nls_default(); |
1933 | /* load_nls_default can not return null */ | |
1934 | } else { | |
1935 | cifs_sb->local_nls = load_nls(volume_info.iocharset); | |
fb8c4b14 | 1936 | if (cifs_sb->local_nls == NULL) { |
50c2f753 SF |
1937 | cERROR(1, ("CIFS mount error: iocharset %s not found", |
1938 | volume_info.iocharset)); | |
70fe7dc0 JL |
1939 | rc = -ELIBACC; |
1940 | goto out; | |
1da177e4 LT |
1941 | } |
1942 | } | |
1943 | ||
fb8c4b14 | 1944 | if (address_type == AF_INET) |
1da177e4 LT |
1945 | existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr, |
1946 | NULL /* no ipv6 addr */, | |
1947 | volume_info.username, &srvTcp); | |
fb8c4b14 SF |
1948 | else if (address_type == AF_INET6) { |
1949 | cFYI(1, ("looking for ipv6 address")); | |
1da177e4 LT |
1950 | existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */, |
1951 | &sin_server6.sin6_addr, | |
1952 | volume_info.username, &srvTcp); | |
5858ae44 | 1953 | } else { |
70fe7dc0 JL |
1954 | rc = -EINVAL; |
1955 | goto out; | |
1da177e4 LT |
1956 | } |
1957 | ||
1da177e4 | 1958 | if (srvTcp) { |
50c2f753 | 1959 | cFYI(1, ("Existing tcp session with server found")); |
1da177e4 | 1960 | } else { /* create socket */ |
4523cc30 | 1961 | if (volume_info.port) |
1da177e4 LT |
1962 | sin_server.sin_port = htons(volume_info.port); |
1963 | else | |
1964 | sin_server.sin_port = 0; | |
5858ae44 | 1965 | if (address_type == AF_INET6) { |
fb8c4b14 | 1966 | cFYI(1, ("attempting ipv6 connect")); |
5858ae44 SF |
1967 | /* BB should we allow ipv6 on port 139? */ |
1968 | /* other OS never observed in Wild doing 139 with v6 */ | |
50c2f753 SF |
1969 | rc = ipv6_connect(&sin_server6, &csocket); |
1970 | } else | |
1971 | rc = ipv4_connect(&sin_server, &csocket, | |
a10faeb2 SF |
1972 | volume_info.source_rfc1001_name, |
1973 | volume_info.target_rfc1001_name); | |
1da177e4 | 1974 | if (rc < 0) { |
50c2f753 SF |
1975 | cERROR(1, ("Error connecting to IPv4 socket. " |
1976 | "Aborting operation")); | |
4523cc30 | 1977 | if (csocket != NULL) |
1da177e4 | 1978 | sock_release(csocket); |
70fe7dc0 | 1979 | goto out; |
1da177e4 LT |
1980 | } |
1981 | ||
a8a11d39 MK |
1982 | srvTcp = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); |
1983 | if (!srvTcp) { | |
1da177e4 LT |
1984 | rc = -ENOMEM; |
1985 | sock_release(csocket); | |
70fe7dc0 | 1986 | goto out; |
1da177e4 | 1987 | } else { |
50c2f753 | 1988 | memcpy(&srvTcp->addr.sockAddr, &sin_server, |
6345a3a8 | 1989 | sizeof(struct sockaddr_in)); |
50c2f753 | 1990 | atomic_set(&srvTcp->inFlight, 0); |
1da177e4 LT |
1991 | /* BB Add code for ipv6 case too */ |
1992 | srvTcp->ssocket = csocket; | |
1993 | srvTcp->protocolType = IPV4; | |
c359cf3c JL |
1994 | srvTcp->hostname = extract_hostname(volume_info.UNC); |
1995 | if (IS_ERR(srvTcp->hostname)) { | |
1996 | rc = PTR_ERR(srvTcp->hostname); | |
1997 | sock_release(csocket); | |
1998 | goto out; | |
1999 | } | |
1da177e4 LT |
2000 | init_waitqueue_head(&srvTcp->response_q); |
2001 | init_waitqueue_head(&srvTcp->request_q); | |
2002 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
2003 | /* at this point we are the only ones with the pointer | |
2004 | to the struct since the kernel thread not created yet | |
2005 | so no need to spinlock this init of tcpStatus */ | |
2006 | srvTcp->tcpStatus = CifsNew; | |
2007 | init_MUTEX(&srvTcp->tcpSem); | |
aaf737ad | 2008 | srvTcp->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, srvTcp, "cifsd"); |
8840dee9 | 2009 | if (IS_ERR(srvTcp->tsk)) { |
aaf737ad | 2010 | rc = PTR_ERR(srvTcp->tsk); |
50c2f753 | 2011 | cERROR(1, ("error %d create cifsd thread", rc)); |
aaf737ad | 2012 | srvTcp->tsk = NULL; |
1da177e4 | 2013 | sock_release(csocket); |
c359cf3c | 2014 | kfree(srvTcp->hostname); |
70fe7dc0 | 2015 | goto out; |
f191401f | 2016 | } |
f191401f | 2017 | rc = 0; |
50c2f753 SF |
2018 | memcpy(srvTcp->workstation_RFC1001_name, |
2019 | volume_info.source_rfc1001_name, 16); | |
2020 | memcpy(srvTcp->server_RFC1001_name, | |
2021 | volume_info.target_rfc1001_name, 16); | |
ad009ac9 | 2022 | srvTcp->sequence_number = 0; |
1da177e4 LT |
2023 | } |
2024 | } | |
2025 | ||
2026 | if (existingCifsSes) { | |
2027 | pSesInfo = existingCifsSes; | |
1d9a8852 JL |
2028 | cFYI(1, ("Existing smb sess found (status=%d)", |
2029 | pSesInfo->status)); | |
88e7d705 | 2030 | down(&pSesInfo->sesSem); |
1d9a8852 JL |
2031 | if (pSesInfo->status == CifsNeedReconnect) { |
2032 | cFYI(1, ("Session needs reconnect")); | |
1d9a8852 JL |
2033 | rc = cifs_setup_session(xid, pSesInfo, |
2034 | cifs_sb->local_nls); | |
1d9a8852 | 2035 | } |
88e7d705 | 2036 | up(&pSesInfo->sesSem); |
1da177e4 | 2037 | } else if (!rc) { |
bf820679 | 2038 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 LT |
2039 | pSesInfo = sesInfoAlloc(); |
2040 | if (pSesInfo == NULL) | |
2041 | rc = -ENOMEM; | |
2042 | else { | |
2043 | pSesInfo->server = srvTcp; | |
2044 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
2045 | NIPQUAD(sin_server.sin_addr.s_addr)); | |
2046 | } | |
2047 | ||
50c2f753 SF |
2048 | if (!rc) { |
2049 | /* volume_info.password freed at unmount */ | |
70fe7dc0 | 2050 | if (volume_info.password) { |
1da177e4 | 2051 | pSesInfo->password = volume_info.password; |
70fe7dc0 JL |
2052 | /* set to NULL to prevent freeing on exit */ |
2053 | volume_info.password = NULL; | |
2054 | } | |
1da177e4 LT |
2055 | if (volume_info.username) |
2056 | strncpy(pSesInfo->userName, | |
50c2f753 SF |
2057 | volume_info.username, |
2058 | MAX_USERNAME_SIZE); | |
3979877e SF |
2059 | if (volume_info.domainname) { |
2060 | int len = strlen(volume_info.domainname); | |
50c2f753 | 2061 | pSesInfo->domainName = |
3979877e | 2062 | kmalloc(len + 1, GFP_KERNEL); |
4523cc30 | 2063 | if (pSesInfo->domainName) |
3979877e SF |
2064 | strcpy(pSesInfo->domainName, |
2065 | volume_info.domainname); | |
2066 | } | |
1da177e4 | 2067 | pSesInfo->linux_uid = volume_info.linux_uid; |
750d1151 | 2068 | pSesInfo->overrideSecFlg = volume_info.secFlg; |
1da177e4 | 2069 | down(&pSesInfo->sesSem); |
189acaae | 2070 | /* BB FIXME need to pass vol->secFlgs BB */ |
50c2f753 SF |
2071 | rc = cifs_setup_session(xid, pSesInfo, |
2072 | cifs_sb->local_nls); | |
1da177e4 | 2073 | up(&pSesInfo->sesSem); |
4523cc30 | 2074 | if (!rc) |
1da177e4 | 2075 | atomic_inc(&srvTcp->socketUseCount); |
70fe7dc0 | 2076 | } |
1da177e4 | 2077 | } |
50c2f753 | 2078 | |
1da177e4 LT |
2079 | /* search for existing tcon to this server share */ |
2080 | if (!rc) { | |
4523cc30 | 2081 | if (volume_info.rsize > CIFSMaxBufSize) { |
50c2f753 | 2082 | cERROR(1, ("rsize %d too large, using MaxBufSize", |
0ae0efad SF |
2083 | volume_info.rsize)); |
2084 | cifs_sb->rsize = CIFSMaxBufSize; | |
75865f8c SF |
2085 | } else if ((volume_info.rsize) && |
2086 | (volume_info.rsize <= CIFSMaxBufSize)) | |
1da177e4 | 2087 | cifs_sb->rsize = volume_info.rsize; |
0ae0efad SF |
2088 | else /* default */ |
2089 | cifs_sb->rsize = CIFSMaxBufSize; | |
2090 | ||
4523cc30 | 2091 | if (volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { |
50c2f753 | 2092 | cERROR(1, ("wsize %d too large, using 4096 instead", |
0ae0efad SF |
2093 | volume_info.wsize)); |
2094 | cifs_sb->wsize = 4096; | |
4523cc30 | 2095 | } else if (volume_info.wsize) |
1da177e4 LT |
2096 | cifs_sb->wsize = volume_info.wsize; |
2097 | else | |
50c2f753 | 2098 | cifs_sb->wsize = |
1877c9ea SF |
2099 | min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE, |
2100 | 127*1024); | |
17cbbafe | 2101 | /* old default of CIFSMaxBufSize was too small now |
50c2f753 | 2102 | that SMB Write2 can send multiple pages in kvec. |
17cbbafe SF |
2103 | RFC1001 does not describe what happens when frame |
2104 | bigger than 128K is sent so use that as max in | |
2105 | conjunction with 52K kvec constraint on arch with 4K | |
2106 | page size */ | |
2107 | ||
4523cc30 | 2108 | if (cifs_sb->rsize < 2048) { |
50c2f753 | 2109 | cifs_sb->rsize = 2048; |
6cec2aed | 2110 | /* Windows ME may prefer this */ |
467a8f8d | 2111 | cFYI(1, ("readsize set to minimum: 2048")); |
1da177e4 | 2112 | } |
2fe87f02 SF |
2113 | /* calculate prepath */ |
2114 | cifs_sb->prepath = volume_info.prepath; | |
4523cc30 | 2115 | if (cifs_sb->prepath) { |
2fe87f02 | 2116 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); |
03a143c9 SF |
2117 | /* we can not convert the / to \ in the path |
2118 | separators in the prefixpath yet because we do not | |
2119 | know (until reset_cifs_unix_caps is called later) | |
2120 | whether POSIX PATH CAP is available. We normalize | |
2121 | the / to \ after reset_cifs_unix_caps is called */ | |
2fe87f02 | 2122 | volume_info.prepath = NULL; |
50c2f753 | 2123 | } else |
2fe87f02 | 2124 | cifs_sb->prepathlen = 0; |
1da177e4 LT |
2125 | cifs_sb->mnt_uid = volume_info.linux_uid; |
2126 | cifs_sb->mnt_gid = volume_info.linux_gid; | |
2127 | cifs_sb->mnt_file_mode = volume_info.file_mode; | |
2128 | cifs_sb->mnt_dir_mode = volume_info.dir_mode; | |
467a8f8d SF |
2129 | cFYI(1, ("file mode: 0x%x dir mode: 0x%x", |
2130 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode)); | |
1da177e4 | 2131 | |
4523cc30 | 2132 | if (volume_info.noperm) |
1da177e4 | 2133 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; |
4523cc30 | 2134 | if (volume_info.setuids) |
1da177e4 | 2135 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; |
4523cc30 | 2136 | if (volume_info.server_ino) |
1da177e4 | 2137 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; |
4523cc30 | 2138 | if (volume_info.remap) |
6a0b4824 | 2139 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; |
4523cc30 | 2140 | if (volume_info.no_xattr) |
1da177e4 | 2141 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; |
4523cc30 | 2142 | if (volume_info.sfu_emul) |
d7245c2c | 2143 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; |
4523cc30 | 2144 | if (volume_info.nobrl) |
c46fa8ac | 2145 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; |
4523cc30 | 2146 | if (volume_info.cifs_acl) |
0a4b92c0 | 2147 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; |
4523cc30 SF |
2148 | if (volume_info.override_uid) |
2149 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; | |
2150 | if (volume_info.override_gid) | |
2151 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; | |
d0a9c078 JL |
2152 | if (volume_info.dynperm) |
2153 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM; | |
4523cc30 | 2154 | if (volume_info.direct_io) { |
467a8f8d | 2155 | cFYI(1, ("mounting share using direct i/o")); |
1da177e4 LT |
2156 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
2157 | } | |
2158 | ||
27adb44c SF |
2159 | if ((volume_info.cifs_acl) && (volume_info.dynperm)) |
2160 | cERROR(1, ("mount option dynperm ignored if cifsacl " | |
2161 | "mount option supported")); | |
2162 | ||
1da177e4 LT |
2163 | tcon = |
2164 | find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, | |
2165 | volume_info.username); | |
2166 | if (tcon) { | |
bf820679 | 2167 | cFYI(1, ("Found match on UNC path")); |
1da177e4 LT |
2168 | /* we can have only one retry value for a connection |
2169 | to a share so for resources mounted more than once | |
50c2f753 | 2170 | to the same server share the last value passed in |
1da177e4 LT |
2171 | for the retry flag is used */ |
2172 | tcon->retry = volume_info.retry; | |
d3485d37 | 2173 | tcon->nocase = volume_info.nocase; |
95b1cb90 SF |
2174 | if (tcon->seal != volume_info.seal) |
2175 | cERROR(1, ("transport encryption setting " | |
2176 | "conflicts with existing tid")); | |
1da177e4 LT |
2177 | } else { |
2178 | tcon = tconInfoAlloc(); | |
2179 | if (tcon == NULL) | |
2180 | rc = -ENOMEM; | |
2181 | else { | |
50c2f753 | 2182 | /* check for null share name ie connecting to |
8af18971 | 2183 | * dfs root */ |
1da177e4 | 2184 | |
50c2f753 | 2185 | /* BB check if this works for exactly length |
8af18971 | 2186 | * three strings */ |
1da177e4 LT |
2187 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) |
2188 | && (strchr(volume_info.UNC + 3, '/') == | |
2189 | NULL)) { | |
646dd539 | 2190 | /* rc = connect_to_dfs_path(xid, pSesInfo, |
8af18971 | 2191 | "", cifs_sb->local_nls, |
50c2f753 | 2192 | cifs_sb->mnt_cifs_flags & |
646dd539 SF |
2193 | CIFS_MOUNT_MAP_SPECIAL_CHR);*/ |
2194 | cFYI(1, ("DFS root not supported")); | |
70fe7dc0 JL |
2195 | rc = -ENODEV; |
2196 | goto out; | |
1da177e4 | 2197 | } else { |
8af18971 SF |
2198 | /* BB Do we need to wrap sesSem around |
2199 | * this TCon call and Unix SetFS as | |
2200 | * we do on SessSetup and reconnect? */ | |
50c2f753 | 2201 | rc = CIFSTCon(xid, pSesInfo, |
1da177e4 LT |
2202 | volume_info.UNC, |
2203 | tcon, cifs_sb->local_nls); | |
2204 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
2205 | } | |
2206 | if (!rc) { | |
2207 | atomic_inc(&pSesInfo->inUse); | |
2208 | tcon->retry = volume_info.retry; | |
d3485d37 | 2209 | tcon->nocase = volume_info.nocase; |
95b1cb90 | 2210 | tcon->seal = volume_info.seal; |
1da177e4 LT |
2211 | } |
2212 | } | |
2213 | } | |
2214 | } | |
4523cc30 | 2215 | if (pSesInfo) { |
1da177e4 LT |
2216 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
2217 | sb->s_maxbytes = (u64) 1 << 63; | |
2218 | } else | |
2219 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
2220 | } | |
2221 | ||
8af18971 | 2222 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
1da177e4 LT |
2223 | sb->s_time_gran = 100; |
2224 | ||
2225 | /* on error free sesinfo and tcon struct if needed */ | |
2226 | if (rc) { | |
2227 | /* if session setup failed, use count is zero but | |
2228 | we still need to free cifsd thread */ | |
4523cc30 | 2229 | if (atomic_read(&srvTcp->socketUseCount) == 0) { |
1da177e4 LT |
2230 | spin_lock(&GlobalMid_Lock); |
2231 | srvTcp->tcpStatus = CifsExiting; | |
2232 | spin_unlock(&GlobalMid_Lock); | |
4523cc30 | 2233 | if (srvTcp->tsk) { |
28356a16 SF |
2234 | /* If we could verify that kthread_stop would |
2235 | always wake up processes blocked in | |
2236 | tcp in recv_mesg then we could remove the | |
2237 | send_sig call */ | |
50c2f753 | 2238 | force_sig(SIGKILL, srvTcp->tsk); |
e691b9d1 | 2239 | kthread_stop(srvTcp->tsk); |
f191401f | 2240 | } |
1da177e4 LT |
2241 | } |
2242 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
2243 | if (tcon) /* up accidently freeing someone elses tcon struct */ | |
2244 | tconInfoFree(tcon); | |
2245 | if (existingCifsSes == NULL) { | |
2246 | if (pSesInfo) { | |
50c2f753 | 2247 | if ((pSesInfo->server) && |
1da177e4 LT |
2248 | (pSesInfo->status == CifsGood)) { |
2249 | int temp_rc; | |
2250 | temp_rc = CIFSSMBLogoff(xid, pSesInfo); | |
2251 | /* if the socketUseCount is now zero */ | |
4523cc30 | 2252 | if ((temp_rc == -ESHUTDOWN) && |
50c2f753 | 2253 | (pSesInfo->server) && |
5d9c7206 | 2254 | (pSesInfo->server->tsk)) { |
5d9c7206 J |
2255 | force_sig(SIGKILL, |
2256 | pSesInfo->server->tsk); | |
e691b9d1 | 2257 | kthread_stop(pSesInfo->server->tsk); |
f191401f | 2258 | } |
a013689d | 2259 | } else { |
1da177e4 | 2260 | cFYI(1, ("No session or bad tcon")); |
a013689d SF |
2261 | if ((pSesInfo->server) && |
2262 | (pSesInfo->server->tsk)) { | |
a013689d SF |
2263 | force_sig(SIGKILL, |
2264 | pSesInfo->server->tsk); | |
e691b9d1 | 2265 | kthread_stop(pSesInfo->server->tsk); |
a013689d SF |
2266 | } |
2267 | } | |
1da177e4 LT |
2268 | sesInfoFree(pSesInfo); |
2269 | /* pSesInfo = NULL; */ | |
2270 | } | |
2271 | } | |
2272 | } else { | |
2273 | atomic_inc(&tcon->useCount); | |
2274 | cifs_sb->tcon = tcon; | |
2275 | tcon->ses = pSesInfo; | |
2276 | ||
82940a46 | 2277 | /* do not care if following two calls succeed - informational */ |
7f8ed420 SF |
2278 | if (!tcon->ipc) { |
2279 | CIFSSMBQFSDeviceInfo(xid, tcon); | |
2280 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
2281 | } | |
50c2f753 | 2282 | |
8af18971 SF |
2283 | /* tell server which Unix caps we support */ |
2284 | if (tcon->ses->capabilities & CAP_UNIX) | |
c18c842b SF |
2285 | /* reset of caps checks mount to see if unix extensions |
2286 | disabled for just this mount */ | |
8af18971 | 2287 | reset_cifs_unix_caps(xid, tcon, sb, &volume_info); |
c18c842b SF |
2288 | else |
2289 | tcon->unix_ext = 0; /* server does not support them */ | |
2290 | ||
03a143c9 | 2291 | /* convert forward to back slashes in prepath here if needed */ |
11b6d645 IM |
2292 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0) |
2293 | convert_delimiter(cifs_sb->prepath, | |
2294 | CIFS_DIR_SEP(cifs_sb)); | |
03a143c9 | 2295 | |
c18c842b | 2296 | if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) { |
75865f8c | 2297 | cifs_sb->rsize = 1024 * 127; |
90c81e0b SF |
2298 | cFYI(DBG2, |
2299 | ("no very large read support, rsize now 127K")); | |
75865f8c | 2300 | } |
3e84469d SF |
2301 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
2302 | cifs_sb->wsize = min(cifs_sb->wsize, | |
2303 | (tcon->ses->server->maxBuf - | |
2304 | MAX_CIFS_HDR_SIZE)); | |
0ae0efad | 2305 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
50c2f753 SF |
2306 | cifs_sb->rsize = min(cifs_sb->rsize, |
2307 | (tcon->ses->server->maxBuf - | |
2308 | MAX_CIFS_HDR_SIZE)); | |
1da177e4 LT |
2309 | } |
2310 | ||
2311 | /* volume_info.password is freed above when existing session found | |
2312 | (in which case it is not needed anymore) but when new sesion is created | |
2313 | the password ptr is put in the new session structure (in which case the | |
2314 | password will be freed at unmount time) */ | |
70fe7dc0 JL |
2315 | out: |
2316 | /* zero out password before freeing */ | |
2317 | if (volume_info.password != NULL) { | |
2318 | memset(volume_info.password, 0, strlen(volume_info.password)); | |
2319 | kfree(volume_info.password); | |
2320 | } | |
f99d49ad | 2321 | kfree(volume_info.UNC); |
2fe87f02 | 2322 | kfree(volume_info.prepath); |
1da177e4 LT |
2323 | FreeXid(xid); |
2324 | return rc; | |
2325 | } | |
2326 | ||
2327 | static int | |
2328 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 2329 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
2330 | const struct nls_table *nls_codepage) |
2331 | { | |
2332 | struct smb_hdr *smb_buffer; | |
2333 | struct smb_hdr *smb_buffer_response; | |
2334 | SESSION_SETUP_ANDX *pSMB; | |
2335 | SESSION_SETUP_ANDX *pSMBr; | |
2336 | char *bcc_ptr; | |
2337 | char *user; | |
2338 | char *domain; | |
2339 | int rc = 0; | |
2340 | int remaining_words = 0; | |
2341 | int bytes_returned = 0; | |
2342 | int len; | |
2343 | __u32 capabilities; | |
2344 | __u16 count; | |
2345 | ||
eeac8047 | 2346 | cFYI(1, ("In sesssetup")); |
4523cc30 | 2347 | if (ses == NULL) |
1da177e4 LT |
2348 | return -EINVAL; |
2349 | user = ses->userName; | |
2350 | domain = ses->domainName; | |
2351 | smb_buffer = cifs_buf_get(); | |
582d21e5 SF |
2352 | |
2353 | if (smb_buffer == NULL) | |
1da177e4 | 2354 | return -ENOMEM; |
582d21e5 | 2355 | |
1da177e4 LT |
2356 | smb_buffer_response = smb_buffer; |
2357 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2358 | ||
2359 | /* send SMBsessionSetup here */ | |
2360 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2361 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2362 | ||
1982c344 | 2363 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2364 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2365 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2366 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2367 | ||
50c2f753 SF |
2368 | if (ses->server->secMode & |
2369 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
2370 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2371 | ||
2372 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2373 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2374 | if (ses->capabilities & CAP_UNICODE) { | |
2375 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2376 | capabilities |= CAP_UNICODE; | |
2377 | } | |
2378 | if (ses->capabilities & CAP_STATUS32) { | |
2379 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2380 | capabilities |= CAP_STATUS32; | |
2381 | } | |
2382 | if (ses->capabilities & CAP_DFS) { | |
2383 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2384 | capabilities |= CAP_DFS; | |
2385 | } | |
2386 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2387 | ||
50c2f753 | 2388 | pSMB->req_no_secext.CaseInsensitivePasswordLength = |
7c7b25bc | 2389 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2390 | |
2391 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2392 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2393 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2394 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2395 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2396 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2397 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2398 | |
2399 | if (ses->capabilities & CAP_UNICODE) { | |
2400 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2401 | *bcc_ptr = 0; | |
2402 | bcc_ptr++; | |
2403 | } | |
4523cc30 | 2404 | if (user == NULL) |
3979877e | 2405 | bytes_returned = 0; /* skip null user */ |
50c2f753 | 2406 | else |
1da177e4 | 2407 | bytes_returned = |
50c2f753 | 2408 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2409 | nls_codepage); |
2410 | /* convert number of 16 bit words to bytes */ | |
2411 | bcc_ptr += 2 * bytes_returned; | |
2412 | bcc_ptr += 2; /* trailing null */ | |
2413 | if (domain == NULL) | |
2414 | bytes_returned = | |
e89dc920 | 2415 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2416 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2417 | else | |
2418 | bytes_returned = | |
e89dc920 | 2419 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2420 | nls_codepage); |
2421 | bcc_ptr += 2 * bytes_returned; | |
2422 | bcc_ptr += 2; | |
2423 | bytes_returned = | |
e89dc920 | 2424 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2425 | 32, nls_codepage); |
2426 | bcc_ptr += 2 * bytes_returned; | |
2427 | bytes_returned = | |
e9ff3990 | 2428 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, |
1da177e4 LT |
2429 | 32, nls_codepage); |
2430 | bcc_ptr += 2 * bytes_returned; | |
2431 | bcc_ptr += 2; | |
2432 | bytes_returned = | |
e89dc920 | 2433 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2434 | 64, nls_codepage); |
2435 | bcc_ptr += 2 * bytes_returned; | |
2436 | bcc_ptr += 2; | |
2437 | } else { | |
50c2f753 | 2438 | if (user != NULL) { |
1da177e4 LT |
2439 | strncpy(bcc_ptr, user, 200); |
2440 | bcc_ptr += strnlen(user, 200); | |
2441 | } | |
2442 | *bcc_ptr = 0; | |
2443 | bcc_ptr++; | |
2444 | if (domain == NULL) { | |
2445 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2446 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2447 | } else { | |
2448 | strncpy(bcc_ptr, domain, 64); | |
2449 | bcc_ptr += strnlen(domain, 64); | |
2450 | *bcc_ptr = 0; | |
2451 | bcc_ptr++; | |
2452 | } | |
2453 | strcpy(bcc_ptr, "Linux version "); | |
2454 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2455 | strcpy(bcc_ptr, utsname()->release); |
2456 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2457 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2458 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2459 | } | |
2460 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2461 | smb_buffer->smb_buf_length += count; | |
2462 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2463 | ||
2464 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2465 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2466 | if (rc) { |
2467 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2468 | } else if ((smb_buffer_response->WordCount == 3) | |
2469 | || (smb_buffer_response->WordCount == 4)) { | |
2470 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2471 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2472 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2473 | cFYI(1, (" Guest login")); /* BB mark SesInfo struct? */ |
2474 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format | |
2475 | (little endian) */ | |
1da177e4 | 2476 | cFYI(1, ("UID = %d ", ses->Suid)); |
50c2f753 SF |
2477 | /* response can have either 3 or 4 word count - Samba sends 3 */ |
2478 | bcc_ptr = pByteArea(smb_buffer_response); | |
1da177e4 LT |
2479 | if ((pSMBr->resp.hdr.WordCount == 3) |
2480 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2481 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2482 | if (pSMBr->resp.hdr.WordCount == 4) | |
2483 | bcc_ptr += blob_len; | |
2484 | ||
2485 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2486 | if ((long) (bcc_ptr) % 2) { | |
2487 | remaining_words = | |
50c2f753 SF |
2488 | (BCC(smb_buffer_response) - 1) / 2; |
2489 | /* Unicode strings must be word | |
2490 | aligned */ | |
2491 | bcc_ptr++; | |
1da177e4 LT |
2492 | } else { |
2493 | remaining_words = | |
2494 | BCC(smb_buffer_response) / 2; | |
2495 | } | |
2496 | len = | |
2497 | UniStrnlen((wchar_t *) bcc_ptr, | |
2498 | remaining_words - 1); | |
2499 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2500 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2501 | terminating last Unicode string in response */ | |
fb8c4b14 | 2502 | if (ses->serverOS) |
a424f8bf | 2503 | kfree(ses->serverOS); |
50c2f753 SF |
2504 | ses->serverOS = kzalloc(2 * (len + 1), |
2505 | GFP_KERNEL); | |
fb8c4b14 | 2506 | if (ses->serverOS == NULL) |
433dc24f | 2507 | goto sesssetup_nomem; |
1da177e4 | 2508 | cifs_strfromUCS_le(ses->serverOS, |
50c2f753 SF |
2509 | (__le16 *)bcc_ptr, |
2510 | len, nls_codepage); | |
1da177e4 LT |
2511 | bcc_ptr += 2 * (len + 1); |
2512 | remaining_words -= len + 1; | |
2513 | ses->serverOS[2 * len] = 0; | |
2514 | ses->serverOS[1 + (2 * len)] = 0; | |
2515 | if (remaining_words > 0) { | |
2516 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2517 | remaining_words-1); | |
cd49b492 | 2518 | kfree(ses->serverNOS); |
50c2f753 SF |
2519 | ses->serverNOS = kzalloc(2 * (len + 1), |
2520 | GFP_KERNEL); | |
fb8c4b14 | 2521 | if (ses->serverNOS == NULL) |
433dc24f | 2522 | goto sesssetup_nomem; |
1da177e4 | 2523 | cifs_strfromUCS_le(ses->serverNOS, |
50c2f753 SF |
2524 | (__le16 *)bcc_ptr, |
2525 | len, nls_codepage); | |
1da177e4 LT |
2526 | bcc_ptr += 2 * (len + 1); |
2527 | ses->serverNOS[2 * len] = 0; | |
2528 | ses->serverNOS[1 + (2 * len)] = 0; | |
fb8c4b14 | 2529 | if (strncmp(ses->serverNOS, |
50c2f753 | 2530 | "NT LAN Manager 4", 16) == 0) { |
467a8f8d | 2531 | cFYI(1, ("NT4 server")); |
1da177e4 LT |
2532 | ses->flags |= CIFS_SES_NT4; |
2533 | } | |
2534 | remaining_words -= len + 1; | |
2535 | if (remaining_words > 0) { | |
433dc24f | 2536 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
50c2f753 SF |
2537 | /* last string is not always null terminated |
2538 | (for e.g. for Windows XP & 2000) */ | |
fb8c4b14 | 2539 | if (ses->serverDomain) |
a424f8bf | 2540 | kfree(ses->serverDomain); |
1da177e4 | 2541 | ses->serverDomain = |
50c2f753 SF |
2542 | kzalloc(2*(len+1), |
2543 | GFP_KERNEL); | |
fb8c4b14 | 2544 | if (ses->serverDomain == NULL) |
433dc24f | 2545 | goto sesssetup_nomem; |
1da177e4 | 2546 | cifs_strfromUCS_le(ses->serverDomain, |
50c2f753 SF |
2547 | (__le16 *)bcc_ptr, |
2548 | len, nls_codepage); | |
1da177e4 LT |
2549 | bcc_ptr += 2 * (len + 1); |
2550 | ses->serverDomain[2*len] = 0; | |
2551 | ses->serverDomain[1+(2*len)] = 0; | |
50c2f753 SF |
2552 | } else { /* else no more room so create |
2553 | dummy domain string */ | |
fb8c4b14 | 2554 | if (ses->serverDomain) |
a424f8bf | 2555 | kfree(ses->serverDomain); |
50c2f753 | 2556 | ses->serverDomain = |
e915fc49 | 2557 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2558 | } |
50c2f753 SF |
2559 | } else { /* no room so create dummy domain |
2560 | and NOS string */ | |
2561 | ||
433dc24f SF |
2562 | /* if these kcallocs fail not much we |
2563 | can do, but better to not fail the | |
2564 | sesssetup itself */ | |
cd49b492 | 2565 | kfree(ses->serverDomain); |
1da177e4 | 2566 | ses->serverDomain = |
e915fc49 | 2567 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2568 | kfree(ses->serverNOS); |
1da177e4 | 2569 | ses->serverNOS = |
e915fc49 | 2570 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2571 | } |
2572 | } else { /* ASCII */ | |
2573 | len = strnlen(bcc_ptr, 1024); | |
2574 | if (((long) bcc_ptr + len) - (long) | |
2575 | pByteArea(smb_buffer_response) | |
2576 | <= BCC(smb_buffer_response)) { | |
cd49b492 | 2577 | kfree(ses->serverOS); |
50c2f753 SF |
2578 | ses->serverOS = kzalloc(len + 1, |
2579 | GFP_KERNEL); | |
fb8c4b14 | 2580 | if (ses->serverOS == NULL) |
433dc24f | 2581 | goto sesssetup_nomem; |
50c2f753 | 2582 | strncpy(ses->serverOS, bcc_ptr, len); |
1da177e4 LT |
2583 | |
2584 | bcc_ptr += len; | |
50c2f753 SF |
2585 | /* null terminate the string */ |
2586 | bcc_ptr[0] = 0; | |
1da177e4 LT |
2587 | bcc_ptr++; |
2588 | ||
2589 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2590 | kfree(ses->serverNOS); |
50c2f753 SF |
2591 | ses->serverNOS = kzalloc(len + 1, |
2592 | GFP_KERNEL); | |
fb8c4b14 | 2593 | if (ses->serverNOS == NULL) |
433dc24f | 2594 | goto sesssetup_nomem; |
1da177e4 LT |
2595 | strncpy(ses->serverNOS, bcc_ptr, len); |
2596 | bcc_ptr += len; | |
2597 | bcc_ptr[0] = 0; | |
2598 | bcc_ptr++; | |
2599 | ||
2600 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 2601 | if (ses->serverDomain) |
a424f8bf | 2602 | kfree(ses->serverDomain); |
50c2f753 SF |
2603 | ses->serverDomain = kzalloc(len + 1, |
2604 | GFP_KERNEL); | |
fb8c4b14 | 2605 | if (ses->serverDomain == NULL) |
433dc24f | 2606 | goto sesssetup_nomem; |
50c2f753 SF |
2607 | strncpy(ses->serverDomain, bcc_ptr, |
2608 | len); | |
1da177e4 LT |
2609 | bcc_ptr += len; |
2610 | bcc_ptr[0] = 0; | |
2611 | bcc_ptr++; | |
2612 | } else | |
2613 | cFYI(1, | |
50c2f753 SF |
2614 | ("Variable field of length %d " |
2615 | "extends beyond end of smb ", | |
1da177e4 LT |
2616 | len)); |
2617 | } | |
2618 | } else { | |
2619 | cERROR(1, | |
50c2f753 SF |
2620 | (" Security Blob Length extends beyond " |
2621 | "end of SMB")); | |
1da177e4 LT |
2622 | } |
2623 | } else { | |
2624 | cERROR(1, | |
2625 | (" Invalid Word count %d: ", | |
2626 | smb_buffer_response->WordCount)); | |
2627 | rc = -EIO; | |
2628 | } | |
433dc24f SF |
2629 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2630 | since that could make reconnection harder, and | |
2631 | reconnection might be needed to free memory */ | |
a8a11d39 | 2632 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2633 | |
2634 | return rc; | |
2635 | } | |
2636 | ||
1da177e4 LT |
2637 | static int |
2638 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
4b18f2a9 | 2639 | struct cifsSesInfo *ses, bool *pNTLMv2_flag, |
1da177e4 LT |
2640 | const struct nls_table *nls_codepage) |
2641 | { | |
2642 | struct smb_hdr *smb_buffer; | |
2643 | struct smb_hdr *smb_buffer_response; | |
2644 | SESSION_SETUP_ANDX *pSMB; | |
2645 | SESSION_SETUP_ANDX *pSMBr; | |
2646 | char *bcc_ptr; | |
2647 | char *domain; | |
2648 | int rc = 0; | |
2649 | int remaining_words = 0; | |
2650 | int bytes_returned = 0; | |
2651 | int len; | |
6345a3a8 | 2652 | int SecurityBlobLength = sizeof(NEGOTIATE_MESSAGE); |
1da177e4 LT |
2653 | PNEGOTIATE_MESSAGE SecurityBlob; |
2654 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2655 | __u32 negotiate_flags, capabilities; | |
2656 | __u16 count; | |
2657 | ||
12b3b8ff | 2658 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
fb8c4b14 | 2659 | if (ses == NULL) |
1da177e4 LT |
2660 | return -EINVAL; |
2661 | domain = ses->domainName; | |
4b18f2a9 | 2662 | *pNTLMv2_flag = false; |
1da177e4 LT |
2663 | smb_buffer = cifs_buf_get(); |
2664 | if (smb_buffer == NULL) { | |
2665 | return -ENOMEM; | |
2666 | } | |
2667 | smb_buffer_response = smb_buffer; | |
2668 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2669 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2670 | ||
2671 | /* send SMBsessionSetup here */ | |
2672 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2673 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2674 | |
2675 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2676 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2677 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2678 | ||
2679 | pSMB->req.AndXCommand = 0xFF; | |
2680 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2681 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2682 | ||
fb8c4b14 | 2683 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2684 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2685 | ||
2686 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2687 | CAP_EXTENDED_SECURITY; | |
2688 | if (ses->capabilities & CAP_UNICODE) { | |
2689 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2690 | capabilities |= CAP_UNICODE; | |
2691 | } | |
2692 | if (ses->capabilities & CAP_STATUS32) { | |
2693 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2694 | capabilities |= CAP_STATUS32; | |
2695 | } | |
2696 | if (ses->capabilities & CAP_DFS) { | |
2697 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2698 | capabilities |= CAP_DFS; | |
2699 | } | |
2700 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2701 | ||
2702 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2703 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2704 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2705 | SecurityBlob->MessageType = NtLmNegotiate; | |
2706 | negotiate_flags = | |
2707 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2708 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2709 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 | 2710 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
fb8c4b14 | 2711 | if (sign_CIFS_PDUs) |
1da177e4 | 2712 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 2713 | /* if (ntlmv2_support) |
3979877e | 2714 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ |
1da177e4 LT |
2715 | /* setup pointers to domain name and workstation name */ |
2716 | bcc_ptr += SecurityBlobLength; | |
2717 | ||
2718 | SecurityBlob->WorkstationName.Buffer = 0; | |
2719 | SecurityBlob->WorkstationName.Length = 0; | |
2720 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2721 | ||
12b3b8ff SF |
2722 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2723 | along with username on auth request (ie the response to challenge) */ | |
2724 | SecurityBlob->DomainName.Buffer = 0; | |
2725 | SecurityBlob->DomainName.Length = 0; | |
2726 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2727 | if (ses->capabilities & CAP_UNICODE) { |
2728 | if ((long) bcc_ptr % 2) { | |
2729 | *bcc_ptr = 0; | |
2730 | bcc_ptr++; | |
2731 | } | |
2732 | ||
2733 | bytes_returned = | |
e89dc920 | 2734 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2735 | 32, nls_codepage); |
2736 | bcc_ptr += 2 * bytes_returned; | |
2737 | bytes_returned = | |
e9ff3990 | 2738 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2739 | nls_codepage); |
2740 | bcc_ptr += 2 * bytes_returned; | |
2741 | bcc_ptr += 2; /* null terminate Linux version */ | |
2742 | bytes_returned = | |
e89dc920 | 2743 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2744 | 64, nls_codepage); |
2745 | bcc_ptr += 2 * bytes_returned; | |
2746 | *(bcc_ptr + 1) = 0; | |
2747 | *(bcc_ptr + 2) = 0; | |
2748 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2749 | *(bcc_ptr + 1) = 0; | |
2750 | *(bcc_ptr + 2) = 0; | |
2751 | bcc_ptr += 2; /* null domain */ | |
2752 | } else { /* ASCII */ | |
2753 | strcpy(bcc_ptr, "Linux version "); | |
2754 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2755 | strcpy(bcc_ptr, utsname()->release); |
2756 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2757 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2758 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2759 | bcc_ptr++; /* empty domain field */ | |
2760 | *bcc_ptr = 0; | |
2761 | } | |
2762 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2763 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2764 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2765 | smb_buffer->smb_buf_length += count; | |
2766 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2767 | ||
2768 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2769 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2770 | |
2771 | if (smb_buffer_response->Status.CifsError == | |
2772 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2773 | rc = 0; | |
2774 | ||
2775 | if (rc) { | |
2776 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2777 | } else if ((smb_buffer_response->WordCount == 3) | |
2778 | || (smb_buffer_response->WordCount == 4)) { | |
2779 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2780 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2781 | ||
2782 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2783 | cFYI(1, (" Guest login")); |
2784 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
1da177e4 | 2785 | |
50c2f753 SF |
2786 | bcc_ptr = pByteArea(smb_buffer_response); |
2787 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
2788 | |
2789 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2790 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2791 | cFYI(1, | |
2792 | ("Unexpected NTLMSSP message type received %d", | |
2793 | SecurityBlob2->MessageType)); | |
2794 | } else if (ses) { | |
50c2f753 | 2795 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ |
12b3b8ff | 2796 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2797 | if ((pSMBr->resp.hdr.WordCount == 3) |
2798 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2799 | && (blob_len < | |
2800 | pSMBr->resp.ByteCount))) { | |
2801 | ||
2802 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2803 | bcc_ptr += blob_len; | |
12b3b8ff | 2804 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2805 | blob_len)); |
2806 | } | |
2807 | ||
12b3b8ff | 2808 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2809 | |
2810 | memcpy(ses->server->cryptKey, | |
2811 | SecurityBlob2->Challenge, | |
2812 | CIFS_CRYPTO_KEY_SIZE); | |
50c2f753 | 2813 | if (SecurityBlob2->NegotiateFlags & |
12b3b8ff | 2814 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) |
4b18f2a9 | 2815 | *pNTLMv2_flag = true; |
1da177e4 | 2816 | |
50c2f753 SF |
2817 | if ((SecurityBlob2->NegotiateFlags & |
2818 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
1da177e4 | 2819 | || (sign_CIFS_PDUs > 1)) |
50c2f753 SF |
2820 | ses->server->secMode |= |
2821 | SECMODE_SIGN_REQUIRED; | |
2822 | if ((SecurityBlob2->NegotiateFlags & | |
1da177e4 | 2823 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) |
50c2f753 | 2824 | ses->server->secMode |= |
1da177e4 LT |
2825 | SECMODE_SIGN_ENABLED; |
2826 | ||
2827 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2828 | if ((long) (bcc_ptr) % 2) { | |
2829 | remaining_words = | |
2830 | (BCC(smb_buffer_response) | |
2831 | - 1) / 2; | |
50c2f753 SF |
2832 | /* Must word align unicode strings */ |
2833 | bcc_ptr++; | |
1da177e4 LT |
2834 | } else { |
2835 | remaining_words = | |
2836 | BCC | |
2837 | (smb_buffer_response) / 2; | |
2838 | } | |
2839 | len = | |
2840 | UniStrnlen((wchar_t *) bcc_ptr, | |
2841 | remaining_words - 1); | |
2842 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2843 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2844 | terminating last Unicode string in response */ | |
fb8c4b14 | 2845 | if (ses->serverOS) |
a424f8bf | 2846 | kfree(ses->serverOS); |
1da177e4 | 2847 | ses->serverOS = |
e915fc49 | 2848 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2849 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2850 | (__le16 *) |
1da177e4 LT |
2851 | bcc_ptr, len, |
2852 | nls_codepage); | |
2853 | bcc_ptr += 2 * (len + 1); | |
2854 | remaining_words -= len + 1; | |
2855 | ses->serverOS[2 * len] = 0; | |
2856 | ses->serverOS[1 + (2 * len)] = 0; | |
2857 | if (remaining_words > 0) { | |
2858 | len = UniStrnlen((wchar_t *) | |
2859 | bcc_ptr, | |
2860 | remaining_words | |
2861 | - 1); | |
cd49b492 | 2862 | kfree(ses->serverNOS); |
1da177e4 | 2863 | ses->serverNOS = |
e915fc49 | 2864 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2865 | GFP_KERNEL); |
2866 | cifs_strfromUCS_le(ses-> | |
2867 | serverNOS, | |
e89dc920 | 2868 | (__le16 *) |
1da177e4 LT |
2869 | bcc_ptr, |
2870 | len, | |
2871 | nls_codepage); | |
2872 | bcc_ptr += 2 * (len + 1); | |
2873 | ses->serverNOS[2 * len] = 0; | |
2874 | ses->serverNOS[1 + | |
2875 | (2 * len)] = 0; | |
2876 | remaining_words -= len + 1; | |
2877 | if (remaining_words > 0) { | |
50c2f753 SF |
2878 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
2879 | /* last string not always null terminated | |
2880 | (for e.g. for Windows XP & 2000) */ | |
cd49b492 | 2881 | kfree(ses->serverDomain); |
1da177e4 | 2882 | ses->serverDomain = |
e915fc49 | 2883 | kzalloc(2 * |
1da177e4 LT |
2884 | (len + |
2885 | 1), | |
2886 | GFP_KERNEL); | |
2887 | cifs_strfromUCS_le | |
e89dc920 SF |
2888 | (ses->serverDomain, |
2889 | (__le16 *)bcc_ptr, | |
2890 | len, nls_codepage); | |
1da177e4 LT |
2891 | bcc_ptr += |
2892 | 2 * (len + 1); | |
e89dc920 | 2893 | ses->serverDomain[2*len] |
1da177e4 | 2894 | = 0; |
e89dc920 SF |
2895 | ses->serverDomain |
2896 | [1 + (2 * len)] | |
1da177e4 LT |
2897 | = 0; |
2898 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 2899 | else { |
cd49b492 | 2900 | kfree(ses->serverDomain); |
1da177e4 | 2901 | ses->serverDomain = |
e915fc49 | 2902 | kzalloc(2, |
1da177e4 | 2903 | GFP_KERNEL); |
a424f8bf | 2904 | } |
1da177e4 | 2905 | } else { /* no room so create dummy domain and NOS string */ |
cd49b492 | 2906 | kfree(ses->serverDomain); |
1da177e4 | 2907 | ses->serverDomain = |
e915fc49 | 2908 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2909 | kfree(ses->serverNOS); |
1da177e4 | 2910 | ses->serverNOS = |
e915fc49 | 2911 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2912 | } |
2913 | } else { /* ASCII */ | |
2914 | len = strnlen(bcc_ptr, 1024); | |
2915 | if (((long) bcc_ptr + len) - (long) | |
2916 | pByteArea(smb_buffer_response) | |
2917 | <= BCC(smb_buffer_response)) { | |
fb8c4b14 | 2918 | if (ses->serverOS) |
a424f8bf | 2919 | kfree(ses->serverOS); |
1da177e4 | 2920 | ses->serverOS = |
e915fc49 | 2921 | kzalloc(len + 1, |
1da177e4 LT |
2922 | GFP_KERNEL); |
2923 | strncpy(ses->serverOS, | |
2924 | bcc_ptr, len); | |
2925 | ||
2926 | bcc_ptr += len; | |
2927 | bcc_ptr[0] = 0; /* null terminate string */ | |
2928 | bcc_ptr++; | |
2929 | ||
2930 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2931 | kfree(ses->serverNOS); |
1da177e4 | 2932 | ses->serverNOS = |
e915fc49 | 2933 | kzalloc(len + 1, |
1da177e4 LT |
2934 | GFP_KERNEL); |
2935 | strncpy(ses->serverNOS, bcc_ptr, len); | |
2936 | bcc_ptr += len; | |
2937 | bcc_ptr[0] = 0; | |
2938 | bcc_ptr++; | |
2939 | ||
2940 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2941 | kfree(ses->serverDomain); |
1da177e4 | 2942 | ses->serverDomain = |
e915fc49 | 2943 | kzalloc(len + 1, |
1da177e4 | 2944 | GFP_KERNEL); |
50c2f753 SF |
2945 | strncpy(ses->serverDomain, |
2946 | bcc_ptr, len); | |
1da177e4 LT |
2947 | bcc_ptr += len; |
2948 | bcc_ptr[0] = 0; | |
2949 | bcc_ptr++; | |
2950 | } else | |
2951 | cFYI(1, | |
63135e08 SF |
2952 | ("field of length %d " |
2953 | "extends beyond end of smb", | |
1da177e4 LT |
2954 | len)); |
2955 | } | |
2956 | } else { | |
50c2f753 SF |
2957 | cERROR(1, ("Security Blob Length extends beyond" |
2958 | " end of SMB")); | |
1da177e4 LT |
2959 | } |
2960 | } else { | |
2961 | cERROR(1, ("No session structure passed in.")); | |
2962 | } | |
2963 | } else { | |
2964 | cERROR(1, | |
5815449d | 2965 | (" Invalid Word count %d:", |
1da177e4 LT |
2966 | smb_buffer_response->WordCount)); |
2967 | rc = -EIO; | |
2968 | } | |
2969 | ||
a8a11d39 | 2970 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2971 | |
2972 | return rc; | |
2973 | } | |
2974 | static int | |
2975 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
4b18f2a9 | 2976 | char *ntlm_session_key, bool ntlmv2_flag, |
6345a3a8 | 2977 | const struct nls_table *nls_codepage) |
1da177e4 LT |
2978 | { |
2979 | struct smb_hdr *smb_buffer; | |
2980 | struct smb_hdr *smb_buffer_response; | |
2981 | SESSION_SETUP_ANDX *pSMB; | |
2982 | SESSION_SETUP_ANDX *pSMBr; | |
2983 | char *bcc_ptr; | |
2984 | char *user; | |
2985 | char *domain; | |
2986 | int rc = 0; | |
2987 | int remaining_words = 0; | |
2988 | int bytes_returned = 0; | |
2989 | int len; | |
6345a3a8 | 2990 | int SecurityBlobLength = sizeof(AUTHENTICATE_MESSAGE); |
1da177e4 LT |
2991 | PAUTHENTICATE_MESSAGE SecurityBlob; |
2992 | __u32 negotiate_flags, capabilities; | |
2993 | __u16 count; | |
2994 | ||
2995 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
fb8c4b14 | 2996 | if (ses == NULL) |
1da177e4 LT |
2997 | return -EINVAL; |
2998 | user = ses->userName; | |
2999 | domain = ses->domainName; | |
3000 | smb_buffer = cifs_buf_get(); | |
3001 | if (smb_buffer == NULL) { | |
3002 | return -ENOMEM; | |
3003 | } | |
3004 | smb_buffer_response = smb_buffer; | |
6345a3a8 CG |
3005 | pSMB = (SESSION_SETUP_ANDX *)smb_buffer; |
3006 | pSMBr = (SESSION_SETUP_ANDX *)smb_buffer_response; | |
1da177e4 LT |
3007 | |
3008 | /* send SMBsessionSetup here */ | |
3009 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
3010 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
3011 | |
3012 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3013 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
3014 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
3015 | pSMB->req.AndXCommand = 0xFF; | |
3016 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
3017 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
3018 | ||
3019 | pSMB->req.hdr.Uid = ses->Suid; | |
3020 | ||
fb8c4b14 | 3021 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3022 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3023 | ||
3024 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
6345a3a8 | 3025 | CAP_EXTENDED_SECURITY; |
1da177e4 LT |
3026 | if (ses->capabilities & CAP_UNICODE) { |
3027 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3028 | capabilities |= CAP_UNICODE; | |
3029 | } | |
3030 | if (ses->capabilities & CAP_STATUS32) { | |
3031 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3032 | capabilities |= CAP_STATUS32; | |
3033 | } | |
3034 | if (ses->capabilities & CAP_DFS) { | |
3035 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3036 | capabilities |= CAP_DFS; | |
3037 | } | |
3038 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
3039 | ||
6345a3a8 CG |
3040 | bcc_ptr = (char *)&pSMB->req.SecurityBlob; |
3041 | SecurityBlob = (PAUTHENTICATE_MESSAGE)bcc_ptr; | |
1da177e4 LT |
3042 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); |
3043 | SecurityBlob->MessageType = NtLmAuthenticate; | |
3044 | bcc_ptr += SecurityBlobLength; | |
6345a3a8 CG |
3045 | negotiate_flags = NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | |
3046 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
3047 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
fb8c4b14 | 3048 | if (sign_CIFS_PDUs) |
1da177e4 | 3049 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 3050 | if (ntlmv2_flag) |
1da177e4 LT |
3051 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; |
3052 | ||
3053 | /* setup pointers to domain name and workstation name */ | |
3054 | ||
3055 | SecurityBlob->WorkstationName.Buffer = 0; | |
3056 | SecurityBlob->WorkstationName.Length = 0; | |
3057 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
3058 | SecurityBlob->SessionKey.Length = 0; | |
3059 | SecurityBlob->SessionKey.MaximumLength = 0; | |
3060 | SecurityBlob->SessionKey.Buffer = 0; | |
3061 | ||
3062 | SecurityBlob->LmChallengeResponse.Length = 0; | |
3063 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
3064 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
3065 | ||
3066 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 3067 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 3068 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
3069 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
3070 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
3071 | SecurityBlob->NtChallengeResponse.Buffer = |
3072 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
3073 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
3074 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
3075 | |
3076 | if (ses->capabilities & CAP_UNICODE) { | |
3077 | if (domain == NULL) { | |
3078 | SecurityBlob->DomainName.Buffer = 0; | |
3079 | SecurityBlob->DomainName.Length = 0; | |
3080 | SecurityBlob->DomainName.MaximumLength = 0; | |
3081 | } else { | |
77159b4d | 3082 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 | 3083 | nls_codepage); |
77159b4d | 3084 | ln *= 2; |
1da177e4 | 3085 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3086 | cpu_to_le16(ln); |
1da177e4 LT |
3087 | SecurityBlob->DomainName.Buffer = |
3088 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3089 | bcc_ptr += ln; |
3090 | SecurityBlobLength += ln; | |
3091 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3092 | } |
3093 | if (user == NULL) { | |
3094 | SecurityBlob->UserName.Buffer = 0; | |
3095 | SecurityBlob->UserName.Length = 0; | |
3096 | SecurityBlob->UserName.MaximumLength = 0; | |
3097 | } else { | |
77159b4d | 3098 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 | 3099 | nls_codepage); |
77159b4d | 3100 | ln *= 2; |
1da177e4 | 3101 | SecurityBlob->UserName.MaximumLength = |
77159b4d | 3102 | cpu_to_le16(ln); |
1da177e4 LT |
3103 | SecurityBlob->UserName.Buffer = |
3104 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3105 | bcc_ptr += ln; |
3106 | SecurityBlobLength += ln; | |
3107 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3108 | } |
3109 | ||
63135e08 SF |
3110 | /* SecurityBlob->WorkstationName.Length = |
3111 | cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); | |
1da177e4 | 3112 | SecurityBlob->WorkstationName.Length *= 2; |
63135e08 SF |
3113 | SecurityBlob->WorkstationName.MaximumLength = |
3114 | cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
3115 | SecurityBlob->WorkstationName.Buffer = | |
3116 | cpu_to_le32(SecurityBlobLength); | |
1da177e4 LT |
3117 | bcc_ptr += SecurityBlob->WorkstationName.Length; |
3118 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
63135e08 SF |
3119 | SecurityBlob->WorkstationName.Length = |
3120 | cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
1da177e4 LT |
3121 | |
3122 | if ((long) bcc_ptr % 2) { | |
3123 | *bcc_ptr = 0; | |
3124 | bcc_ptr++; | |
3125 | } | |
3126 | bytes_returned = | |
e89dc920 | 3127 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
3128 | 32, nls_codepage); |
3129 | bcc_ptr += 2 * bytes_returned; | |
3130 | bytes_returned = | |
e9ff3990 | 3131 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
3132 | nls_codepage); |
3133 | bcc_ptr += 2 * bytes_returned; | |
3134 | bcc_ptr += 2; /* null term version string */ | |
3135 | bytes_returned = | |
e89dc920 | 3136 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
3137 | 64, nls_codepage); |
3138 | bcc_ptr += 2 * bytes_returned; | |
3139 | *(bcc_ptr + 1) = 0; | |
3140 | *(bcc_ptr + 2) = 0; | |
3141 | bcc_ptr += 2; /* null terminate network opsys string */ | |
3142 | *(bcc_ptr + 1) = 0; | |
3143 | *(bcc_ptr + 2) = 0; | |
3144 | bcc_ptr += 2; /* null domain */ | |
3145 | } else { /* ASCII */ | |
3146 | if (domain == NULL) { | |
3147 | SecurityBlob->DomainName.Buffer = 0; | |
3148 | SecurityBlob->DomainName.Length = 0; | |
3149 | SecurityBlob->DomainName.MaximumLength = 0; | |
3150 | } else { | |
77159b4d | 3151 | __u16 ln; |
1da177e4 LT |
3152 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; |
3153 | strncpy(bcc_ptr, domain, 63); | |
77159b4d | 3154 | ln = strnlen(domain, 64); |
1da177e4 | 3155 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3156 | cpu_to_le16(ln); |
1da177e4 LT |
3157 | SecurityBlob->DomainName.Buffer = |
3158 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3159 | bcc_ptr += ln; |
3160 | SecurityBlobLength += ln; | |
3161 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3162 | } |
3163 | if (user == NULL) { | |
3164 | SecurityBlob->UserName.Buffer = 0; | |
3165 | SecurityBlob->UserName.Length = 0; | |
3166 | SecurityBlob->UserName.MaximumLength = 0; | |
3167 | } else { | |
77159b4d | 3168 | __u16 ln; |
1da177e4 | 3169 | strncpy(bcc_ptr, user, 63); |
77159b4d SF |
3170 | ln = strnlen(user, 64); |
3171 | SecurityBlob->UserName.MaximumLength = cpu_to_le16(ln); | |
1da177e4 | 3172 | SecurityBlob->UserName.Buffer = |
77159b4d SF |
3173 | cpu_to_le32(SecurityBlobLength); |
3174 | bcc_ptr += ln; | |
3175 | SecurityBlobLength += ln; | |
3176 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3177 | } |
3178 | /* BB fill in our workstation name if known BB */ | |
3179 | ||
3180 | strcpy(bcc_ptr, "Linux version "); | |
3181 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
3182 | strcpy(bcc_ptr, utsname()->release); |
3183 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
3184 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
3185 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
3186 | bcc_ptr++; /* null domain */ | |
3187 | *bcc_ptr = 0; | |
3188 | } | |
3189 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
3190 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
3191 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
3192 | smb_buffer->smb_buf_length += count; | |
3193 | pSMB->req.ByteCount = cpu_to_le16(count); | |
3194 | ||
3195 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 3196 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 | 3197 | if (rc) { |
6345a3a8 CG |
3198 | /* rc = map_smb_to_linux_error(smb_buffer_response) done in SendReceive now */ |
3199 | } else if ((smb_buffer_response->WordCount == 3) || | |
3200 | (smb_buffer_response->WordCount == 4)) { | |
1da177e4 | 3201 | __u16 action = le16_to_cpu(pSMBr->resp.Action); |
6345a3a8 | 3202 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); |
1da177e4 | 3203 | if (action & GUEST_LOGIN) |
50c2f753 SF |
3204 | cFYI(1, (" Guest login")); /* BB Should we set anything |
3205 | in SesInfo struct ? */ | |
3206 | /* if (SecurityBlob2->MessageType != NtLm??) { | |
3207 | cFYI("Unexpected message type on auth response is %d")); | |
3208 | } */ | |
3209 | ||
1da177e4 LT |
3210 | if (ses) { |
3211 | cFYI(1, | |
50c2f753 | 3212 | ("Check challenge UID %d vs auth response UID %d", |
1da177e4 | 3213 | ses->Suid, smb_buffer_response->Uid)); |
50c2f753 SF |
3214 | /* UID left in wire format */ |
3215 | ses->Suid = smb_buffer_response->Uid; | |
3216 | bcc_ptr = pByteArea(smb_buffer_response); | |
3217 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
3218 | if ((pSMBr->resp.hdr.WordCount == 3) |
3219 | || ((pSMBr->resp.hdr.WordCount == 4) | |
3220 | && (blob_len < | |
3221 | pSMBr->resp.ByteCount))) { | |
3222 | if (pSMBr->resp.hdr.WordCount == 4) { | |
3223 | bcc_ptr += | |
3224 | blob_len; | |
3225 | cFYI(1, | |
3226 | ("Security Blob Length %d ", | |
3227 | blob_len)); | |
3228 | } | |
3229 | ||
3230 | cFYI(1, | |
3231 | ("NTLMSSP response to Authenticate ")); | |
3232 | ||
3233 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3234 | if ((long) (bcc_ptr) % 2) { | |
3235 | remaining_words = | |
3236 | (BCC(smb_buffer_response) | |
3237 | - 1) / 2; | |
3238 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
3239 | } else { | |
3240 | remaining_words = BCC(smb_buffer_response) / 2; | |
3241 | } | |
77159b4d SF |
3242 | len = UniStrnlen((wchar_t *) bcc_ptr, |
3243 | remaining_words - 1); | |
1da177e4 LT |
3244 | /* We look for obvious messed up bcc or strings in response so we do not go off |
3245 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
3246 | terminating last Unicode string in response */ | |
fb8c4b14 | 3247 | if (ses->serverOS) |
08775834 | 3248 | kfree(ses->serverOS); |
1da177e4 | 3249 | ses->serverOS = |
e915fc49 | 3250 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 3251 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 3252 | (__le16 *) |
1da177e4 LT |
3253 | bcc_ptr, len, |
3254 | nls_codepage); | |
3255 | bcc_ptr += 2 * (len + 1); | |
3256 | remaining_words -= len + 1; | |
3257 | ses->serverOS[2 * len] = 0; | |
3258 | ses->serverOS[1 + (2 * len)] = 0; | |
3259 | if (remaining_words > 0) { | |
3260 | len = UniStrnlen((wchar_t *) | |
3261 | bcc_ptr, | |
3262 | remaining_words | |
3263 | - 1); | |
cd49b492 | 3264 | kfree(ses->serverNOS); |
1da177e4 | 3265 | ses->serverNOS = |
e915fc49 | 3266 | kzalloc(2 * (len + 1), |
1da177e4 LT |
3267 | GFP_KERNEL); |
3268 | cifs_strfromUCS_le(ses-> | |
3269 | serverNOS, | |
e89dc920 | 3270 | (__le16 *) |
1da177e4 LT |
3271 | bcc_ptr, |
3272 | len, | |
3273 | nls_codepage); | |
3274 | bcc_ptr += 2 * (len + 1); | |
3275 | ses->serverNOS[2 * len] = 0; | |
3276 | ses->serverNOS[1+(2*len)] = 0; | |
3277 | remaining_words -= len + 1; | |
3278 | if (remaining_words > 0) { | |
50c2f753 | 3279 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 3280 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ |
fb8c4b14 | 3281 | if (ses->serverDomain) |
a424f8bf | 3282 | kfree(ses->serverDomain); |
1da177e4 | 3283 | ses->serverDomain = |
e915fc49 | 3284 | kzalloc(2 * |
1da177e4 LT |
3285 | (len + |
3286 | 1), | |
3287 | GFP_KERNEL); | |
3288 | cifs_strfromUCS_le | |
3289 | (ses-> | |
3290 | serverDomain, | |
e89dc920 | 3291 | (__le16 *) |
1da177e4 LT |
3292 | bcc_ptr, len, |
3293 | nls_codepage); | |
3294 | bcc_ptr += | |
3295 | 2 * (len + 1); | |
3296 | ses-> | |
3297 | serverDomain[2 | |
3298 | * len] | |
3299 | = 0; | |
3300 | ses-> | |
3301 | serverDomain[1 | |
3302 | + | |
3303 | (2 | |
3304 | * | |
3305 | len)] | |
3306 | = 0; | |
3307 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 3308 | else { |
fb8c4b14 | 3309 | if (ses->serverDomain) |
a424f8bf | 3310 | kfree(ses->serverDomain); |
e915fc49 | 3311 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 3312 | } |
1da177e4 | 3313 | } else { /* no room so create dummy domain and NOS string */ |
fb8c4b14 | 3314 | if (ses->serverDomain) |
a424f8bf | 3315 | kfree(ses->serverDomain); |
e915fc49 | 3316 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 3317 | kfree(ses->serverNOS); |
e915fc49 | 3318 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3319 | } |
3320 | } else { /* ASCII */ | |
3321 | len = strnlen(bcc_ptr, 1024); | |
50c2f753 SF |
3322 | if (((long) bcc_ptr + len) - |
3323 | (long) pByteArea(smb_buffer_response) | |
63135e08 | 3324 | <= BCC(smb_buffer_response)) { |
fb8c4b14 | 3325 | if (ses->serverOS) |
a424f8bf | 3326 | kfree(ses->serverOS); |
77159b4d | 3327 | ses->serverOS = kzalloc(len + 1, GFP_KERNEL); |
1da177e4 LT |
3328 | strncpy(ses->serverOS,bcc_ptr, len); |
3329 | ||
3330 | bcc_ptr += len; | |
3331 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3332 | bcc_ptr++; | |
3333 | ||
3334 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3335 | kfree(ses->serverNOS); |
50c2f753 SF |
3336 | ses->serverNOS = kzalloc(len+1, |
3337 | GFP_KERNEL); | |
63135e08 SF |
3338 | strncpy(ses->serverNOS, |
3339 | bcc_ptr, len); | |
1da177e4 LT |
3340 | bcc_ptr += len; |
3341 | bcc_ptr[0] = 0; | |
3342 | bcc_ptr++; | |
3343 | ||
3344 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 3345 | if (ses->serverDomain) |
a424f8bf | 3346 | kfree(ses->serverDomain); |
63135e08 SF |
3347 | ses->serverDomain = |
3348 | kzalloc(len+1, | |
3349 | GFP_KERNEL); | |
3350 | strncpy(ses->serverDomain, | |
3351 | bcc_ptr, len); | |
1da177e4 LT |
3352 | bcc_ptr += len; |
3353 | bcc_ptr[0] = 0; | |
3354 | bcc_ptr++; | |
3355 | } else | |
6345a3a8 | 3356 | cFYI(1, ("field of length %d " |
63135e08 | 3357 | "extends beyond end of smb ", |
1da177e4 LT |
3358 | len)); |
3359 | } | |
3360 | } else { | |
6345a3a8 | 3361 | cERROR(1, ("Security Blob extends beyond end " |
63135e08 | 3362 | "of SMB")); |
1da177e4 LT |
3363 | } |
3364 | } else { | |
3365 | cERROR(1, ("No session structure passed in.")); | |
3366 | } | |
3367 | } else { | |
6345a3a8 | 3368 | cERROR(1, ("Invalid Word count %d: ", |
1da177e4 LT |
3369 | smb_buffer_response->WordCount)); |
3370 | rc = -EIO; | |
3371 | } | |
3372 | ||
a8a11d39 | 3373 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3374 | |
3375 | return rc; | |
3376 | } | |
3377 | ||
3378 | int | |
3379 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3380 | const char *tree, struct cifsTconInfo *tcon, | |
3381 | const struct nls_table *nls_codepage) | |
3382 | { | |
3383 | struct smb_hdr *smb_buffer; | |
3384 | struct smb_hdr *smb_buffer_response; | |
3385 | TCONX_REQ *pSMB; | |
3386 | TCONX_RSP *pSMBr; | |
3387 | unsigned char *bcc_ptr; | |
3388 | int rc = 0; | |
3389 | int length; | |
3390 | __u16 count; | |
3391 | ||
3392 | if (ses == NULL) | |
3393 | return -EIO; | |
3394 | ||
3395 | smb_buffer = cifs_buf_get(); | |
3396 | if (smb_buffer == NULL) { | |
3397 | return -ENOMEM; | |
3398 | } | |
3399 | smb_buffer_response = smb_buffer; | |
3400 | ||
3401 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3402 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3403 | |
3404 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3405 | smb_buffer->Uid = ses->Suid; |
3406 | pSMB = (TCONX_REQ *) smb_buffer; | |
3407 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3408 | ||
3409 | pSMB->AndXCommand = 0xFF; | |
3410 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3411 | bcc_ptr = &pSMB->Password[0]; |
fb8c4b14 | 3412 | if ((ses->server->secMode) & SECMODE_USER) { |
eeac8047 | 3413 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
7c7b25bc | 3414 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3415 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3416 | /* already aligned so no need to do it below */ |
eeac8047 | 3417 | } else { |
7c7b25bc | 3418 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3419 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3420 | specified as required (when that support is added to | |
3421 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3422 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3423 | by Samba (not sure whether other servers allow |
3424 | NTLMv2 password here) */ | |
7c7b25bc | 3425 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
50c2f753 | 3426 | if ((extended_security & CIFSSEC_MAY_LANMAN) && |
7c7b25bc SF |
3427 | (ses->server->secType == LANMAN)) |
3428 | calc_lanman_hash(ses, bcc_ptr); | |
3429 | else | |
3430 | #endif /* CIFS_WEAK_PW_HASH */ | |
eeac8047 SF |
3431 | SMBNTencrypt(ses->password, |
3432 | ses->server->cryptKey, | |
3433 | bcc_ptr); | |
3434 | ||
7c7b25bc | 3435 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
fb8c4b14 | 3436 | if (ses->capabilities & CAP_UNICODE) { |
7c7b25bc SF |
3437 | /* must align unicode strings */ |
3438 | *bcc_ptr = 0; /* null byte password */ | |
3439 | bcc_ptr++; | |
3440 | } | |
eeac8047 | 3441 | } |
1da177e4 | 3442 | |
50c2f753 | 3443 | if (ses->server->secMode & |
a878fb22 | 3444 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3445 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3446 | ||
3447 | if (ses->capabilities & CAP_STATUS32) { | |
3448 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3449 | } | |
3450 | if (ses->capabilities & CAP_DFS) { | |
3451 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3452 | } | |
3453 | if (ses->capabilities & CAP_UNICODE) { | |
3454 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3455 | length = | |
50c2f753 SF |
3456 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3457 | 6 /* max utf8 char length in bytes */ * | |
a878fb22 SF |
3458 | (/* server len*/ + 256 /* share len */), nls_codepage); |
3459 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3460 | bcc_ptr += 2; /* skip trailing null */ |
3461 | } else { /* ASCII */ | |
1da177e4 LT |
3462 | strcpy(bcc_ptr, tree); |
3463 | bcc_ptr += strlen(tree) + 1; | |
3464 | } | |
3465 | strcpy(bcc_ptr, "?????"); | |
3466 | bcc_ptr += strlen("?????"); | |
3467 | bcc_ptr += 1; | |
3468 | count = bcc_ptr - &pSMB->Password[0]; | |
3469 | pSMB->hdr.smb_buf_length += count; | |
3470 | pSMB->ByteCount = cpu_to_le16(count); | |
3471 | ||
133672ef SF |
3472 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, |
3473 | CIFS_STD_OP); | |
1da177e4 LT |
3474 | |
3475 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3476 | /* above now done in SendReceive */ | |
3477 | if ((rc == 0) && (tcon != NULL)) { | |
3478 | tcon->tidStatus = CifsGood; | |
3479 | tcon->tid = smb_buffer_response->Tid; | |
3480 | bcc_ptr = pByteArea(smb_buffer_response); | |
3481 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
50c2f753 | 3482 | /* skip service field (NB: this field is always ASCII) */ |
7f8ed420 SF |
3483 | if (length == 3) { |
3484 | if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') && | |
3485 | (bcc_ptr[2] == 'C')) { | |
3486 | cFYI(1, ("IPC connection")); | |
3487 | tcon->ipc = 1; | |
3488 | } | |
3489 | } else if (length == 2) { | |
3490 | if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) { | |
3491 | /* the most common case */ | |
3492 | cFYI(1, ("disk share connection")); | |
3493 | } | |
3494 | } | |
50c2f753 | 3495 | bcc_ptr += length + 1; |
1da177e4 LT |
3496 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
3497 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3498 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3499 | if ((bcc_ptr + (2 * length)) - | |
3500 | pByteArea(smb_buffer_response) <= | |
3501 | BCC(smb_buffer_response)) { | |
f99d49ad | 3502 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3503 | tcon->nativeFileSystem = |
e915fc49 | 3504 | kzalloc(length + 2, GFP_KERNEL); |
88f370a6 SF |
3505 | if (tcon->nativeFileSystem) |
3506 | cifs_strfromUCS_le( | |
3507 | tcon->nativeFileSystem, | |
3508 | (__le16 *) bcc_ptr, | |
3509 | length, nls_codepage); | |
1da177e4 LT |
3510 | bcc_ptr += 2 * length; |
3511 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3512 | bcc_ptr[1] = 0; | |
3513 | bcc_ptr += 2; | |
3514 | } | |
50c2f753 | 3515 | /* else do not bother copying these information fields*/ |
1da177e4 LT |
3516 | } else { |
3517 | length = strnlen(bcc_ptr, 1024); | |
3518 | if ((bcc_ptr + length) - | |
3519 | pByteArea(smb_buffer_response) <= | |
3520 | BCC(smb_buffer_response)) { | |
f99d49ad | 3521 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3522 | tcon->nativeFileSystem = |
e915fc49 | 3523 | kzalloc(length + 1, GFP_KERNEL); |
88f370a6 SF |
3524 | if (tcon->nativeFileSystem) |
3525 | strncpy(tcon->nativeFileSystem, bcc_ptr, | |
3526 | length); | |
1da177e4 | 3527 | } |
50c2f753 | 3528 | /* else do not bother copying these information fields*/ |
1da177e4 | 3529 | } |
fb8c4b14 | 3530 | if ((smb_buffer_response->WordCount == 3) || |
1a4e15a0 SF |
3531 | (smb_buffer_response->WordCount == 7)) |
3532 | /* field is in same location */ | |
3979877e SF |
3533 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
3534 | else | |
3535 | tcon->Flags = 0; | |
1da177e4 LT |
3536 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3537 | } else if ((rc == 0) && tcon == NULL) { | |
50c2f753 | 3538 | /* all we need to save for IPC$ connection */ |
1da177e4 LT |
3539 | ses->ipc_tid = smb_buffer_response->Tid; |
3540 | } | |
3541 | ||
a8a11d39 | 3542 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3543 | return rc; |
3544 | } | |
3545 | ||
3546 | int | |
3547 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3548 | { | |
3549 | int rc = 0; | |
3550 | int xid; | |
3551 | struct cifsSesInfo *ses = NULL; | |
3552 | struct task_struct *cifsd_task; | |
50c2f753 | 3553 | char *tmp; |
1da177e4 LT |
3554 | |
3555 | xid = GetXid(); | |
3556 | ||
3557 | if (cifs_sb->tcon) { | |
3558 | ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ | |
3559 | rc = CIFSSMBTDis(xid, cifs_sb->tcon); | |
3560 | if (rc == -EBUSY) { | |
3561 | FreeXid(xid); | |
3562 | return 0; | |
3563 | } | |
5d941ca6 | 3564 | DeleteTconOplockQEntries(cifs_sb->tcon); |
1da177e4 LT |
3565 | tconInfoFree(cifs_sb->tcon); |
3566 | if ((ses) && (ses->server)) { | |
3567 | /* save off task so we do not refer to ses later */ | |
3568 | cifsd_task = ses->server->tsk; | |
3569 | cFYI(1, ("About to do SMBLogoff ")); | |
3570 | rc = CIFSSMBLogoff(xid, ses); | |
3571 | if (rc == -EBUSY) { | |
3572 | FreeXid(xid); | |
3573 | return 0; | |
3574 | } else if (rc == -ESHUTDOWN) { | |
467a8f8d | 3575 | cFYI(1, ("Waking up socket by sending signal")); |
f7f7c31c | 3576 | if (cifsd_task) { |
50c2f753 | 3577 | force_sig(SIGKILL, cifsd_task); |
aaf737ad | 3578 | kthread_stop(cifsd_task); |
f191401f | 3579 | } |
1da177e4 LT |
3580 | rc = 0; |
3581 | } /* else - we have an smb session | |
3582 | left on this socket do not kill cifsd */ | |
3583 | } else | |
3584 | cFYI(1, ("No session or bad tcon")); | |
3585 | } | |
50c2f753 | 3586 | |
1da177e4 | 3587 | cifs_sb->tcon = NULL; |
2fe87f02 SF |
3588 | tmp = cifs_sb->prepath; |
3589 | cifs_sb->prepathlen = 0; | |
3590 | cifs_sb->prepath = NULL; | |
3591 | kfree(tmp); | |
1da177e4 LT |
3592 | if (ses) |
3593 | sesInfoFree(ses); | |
3594 | ||
3595 | FreeXid(xid); | |
88e7d705 | 3596 | return rc; |
50c2f753 | 3597 | } |
1da177e4 LT |
3598 | |
3599 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
50c2f753 | 3600 | struct nls_table *nls_info) |
1da177e4 LT |
3601 | { |
3602 | int rc = 0; | |
7c7b25bc | 3603 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
4b18f2a9 | 3604 | bool ntlmv2_flag = false; |
ad009ac9 | 3605 | int first_time = 0; |
1da177e4 LT |
3606 | |
3607 | /* what if server changes its buffer size after dropping the session? */ | |
fb8c4b14 | 3608 | if (pSesInfo->server->maxBuf == 0) /* no need to send on reconnect */ { |
1da177e4 | 3609 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
fb8c4b14 | 3610 | if (rc == -EAGAIN) /* retry only once on 1st time connection */ { |
1da177e4 | 3611 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
50c2f753 | 3612 | if (rc == -EAGAIN) |
1da177e4 LT |
3613 | rc = -EHOSTDOWN; |
3614 | } | |
fb8c4b14 | 3615 | if (rc == 0) { |
1da177e4 | 3616 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 | 3617 | if (pSesInfo->server->tcpStatus != CifsExiting) |
1da177e4 LT |
3618 | pSesInfo->server->tcpStatus = CifsGood; |
3619 | else | |
3620 | rc = -EHOSTDOWN; | |
3621 | spin_unlock(&GlobalMid_Lock); | |
3622 | ||
3623 | } | |
ad009ac9 | 3624 | first_time = 1; |
1da177e4 LT |
3625 | } |
3626 | if (!rc) { | |
9ac00b7d | 3627 | pSesInfo->flags = 0; |
1da177e4 | 3628 | pSesInfo->capabilities = pSesInfo->server->capabilities; |
fb8c4b14 | 3629 | if (linuxExtEnabled == 0) |
1da177e4 | 3630 | pSesInfo->capabilities &= (~CAP_UNIX); |
ad009ac9 | 3631 | /* pSesInfo->sequence_number = 0;*/ |
50c2f753 SF |
3632 | cFYI(1, |
3633 | ("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", | |
1da177e4 LT |
3634 | pSesInfo->server->secMode, |
3635 | pSesInfo->server->capabilities, | |
175ec9e1 | 3636 | pSesInfo->server->timeAdj)); |
fb8c4b14 | 3637 | if (experimEnabled < 2) |
3979877e SF |
3638 | rc = CIFS_SessSetup(xid, pSesInfo, |
3639 | first_time, nls_info); | |
189acaae | 3640 | else if (extended_security |
50c2f753 | 3641 | && (pSesInfo->capabilities |
175ec9e1 | 3642 | & CAP_EXTENDED_SECURITY) |
1da177e4 | 3643 | && (pSesInfo->server->secType == NTLMSSP)) { |
189acaae | 3644 | rc = -EOPNOTSUPP; |
1da177e4 LT |
3645 | } else if (extended_security |
3646 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
3647 | && (pSesInfo->server->secType == RawNTLMSSP)) { | |
5815449d | 3648 | cFYI(1, ("NTLMSSP sesssetup")); |
1da177e4 LT |
3649 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, |
3650 | pSesInfo, | |
3651 | &ntlmv2_flag, | |
3652 | nls_info); | |
3653 | if (!rc) { | |
fb8c4b14 | 3654 | if (ntlmv2_flag) { |
50c2f753 | 3655 | char *v2_response; |
467a8f8d | 3656 | cFYI(1, ("more secure NTLM ver2 hash")); |
50c2f753 | 3657 | if (CalcNTLMv2_partial_mac_key(pSesInfo, |
1da177e4 LT |
3658 | nls_info)) { |
3659 | rc = -ENOMEM; | |
3660 | goto ss_err_exit; | |
3661 | } else | |
3662 | v2_response = kmalloc(16 + 64 /* blob */, GFP_KERNEL); | |
fb8c4b14 | 3663 | if (v2_response) { |
50c2f753 SF |
3664 | CalcNTLMv2_response(pSesInfo, |
3665 | v2_response); | |
fb8c4b14 | 3666 | /* if (first_time) |
50c2f753 SF |
3667 | cifs_calculate_ntlmv2_mac_key( |
3668 | pSesInfo->server->mac_signing_key, | |
3669 | response, ntlm_session_key,*/ | |
1da177e4 LT |
3670 | kfree(v2_response); |
3671 | /* BB Put dummy sig in SessSetup PDU? */ | |
3672 | } else { | |
3673 | rc = -ENOMEM; | |
3674 | goto ss_err_exit; | |
3675 | } | |
3676 | ||
3677 | } else { | |
3678 | SMBNTencrypt(pSesInfo->password, | |
3679 | pSesInfo->server->cryptKey, | |
3680 | ntlm_session_key); | |
3681 | ||
fb8c4b14 | 3682 | if (first_time) |
ad009ac9 | 3683 | cifs_calculate_mac_key( |
b609f06a | 3684 | &pSesInfo->server->mac_signing_key, |
ad009ac9 SF |
3685 | ntlm_session_key, |
3686 | pSesInfo->password); | |
1da177e4 LT |
3687 | } |
3688 | /* for better security the weaker lanman hash not sent | |
3689 | in AuthSessSetup so we no longer calculate it */ | |
3690 | ||
3691 | rc = CIFSNTLMSSPAuthSessSetup(xid, | |
3692 | pSesInfo, | |
3693 | ntlm_session_key, | |
3694 | ntlmv2_flag, | |
3695 | nls_info); | |
3696 | } | |
3697 | } else { /* old style NTLM 0.12 session setup */ | |
3698 | SMBNTencrypt(pSesInfo->password, | |
3699 | pSesInfo->server->cryptKey, | |
3700 | ntlm_session_key); | |
3701 | ||
fb8c4b14 | 3702 | if (first_time) |
ad009ac9 | 3703 | cifs_calculate_mac_key( |
b609f06a | 3704 | &pSesInfo->server->mac_signing_key, |
ad009ac9 SF |
3705 | ntlm_session_key, pSesInfo->password); |
3706 | ||
1da177e4 LT |
3707 | rc = CIFSSessSetup(xid, pSesInfo, |
3708 | ntlm_session_key, nls_info); | |
3709 | } | |
3710 | if (rc) { | |
fb8c4b14 | 3711 | cERROR(1, ("Send error in SessSetup = %d", rc)); |
1da177e4 | 3712 | } else { |
467a8f8d | 3713 | cFYI(1, ("CIFS Session Established successfully")); |
1da177e4 LT |
3714 | pSesInfo->status = CifsGood; |
3715 | } | |
3716 | } | |
3717 | ss_err_exit: | |
3718 | return rc; | |
3719 | } | |
3720 |