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 */ | |
84210e91 SF |
93 | bool nodfs:1; /* Do not request DFS, even if available */ |
94 | bool local_lease:1; /* check leases only on local system, not remote */ | |
edf1ae40 SF |
95 | bool noblocksnd:1; |
96 | bool noautotune:1; | |
1da177e4 LT |
97 | unsigned int rsize; |
98 | unsigned int wsize; | |
99 | unsigned int sockopt; | |
100 | unsigned short int port; | |
fb8c4b14 | 101 | char *prepath; |
1da177e4 LT |
102 | }; |
103 | ||
bcf4b106 | 104 | static int ipv4_connect(struct TCP_Server_Info *server); |
d5c5605c | 105 | static int ipv6_connect(struct TCP_Server_Info *server); |
1da177e4 | 106 | |
d5c5605c JL |
107 | /* |
108 | * cifs tcp session reconnection | |
109 | * | |
110 | * mark tcp session as reconnecting so temporarily locked | |
111 | * mark all smb sessions as reconnecting for tcp session | |
112 | * reconnect tcp session | |
113 | * wake up waiters on reconnection? - (not needed currently) | |
114 | */ | |
2cd646a2 | 115 | static int |
1da177e4 LT |
116 | cifs_reconnect(struct TCP_Server_Info *server) |
117 | { | |
118 | int rc = 0; | |
f1987b44 | 119 | struct list_head *tmp, *tmp2; |
1da177e4 LT |
120 | struct cifsSesInfo *ses; |
121 | struct cifsTconInfo *tcon; | |
fb8c4b14 | 122 | struct mid_q_entry *mid_entry; |
50c2f753 | 123 | |
1da177e4 | 124 | spin_lock(&GlobalMid_Lock); |
469ee614 | 125 | if (server->tcpStatus == CifsExiting) { |
fb8c4b14 | 126 | /* the demux thread will exit normally |
1da177e4 LT |
127 | next time through the loop */ |
128 | spin_unlock(&GlobalMid_Lock); | |
129 | return rc; | |
130 | } else | |
131 | server->tcpStatus = CifsNeedReconnect; | |
132 | spin_unlock(&GlobalMid_Lock); | |
133 | server->maxBuf = 0; | |
134 | ||
e4eb295d | 135 | cFYI(1, ("Reconnecting tcp session")); |
1da177e4 LT |
136 | |
137 | /* before reconnecting the tcp session, mark the smb session (uid) | |
138 | and the tid bad so they are not used until reconnected */ | |
14fbf50d JL |
139 | read_lock(&cifs_tcp_ses_lock); |
140 | list_for_each(tmp, &server->smb_ses_list) { | |
141 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); | |
142 | ses->need_reconnect = true; | |
143 | ses->ipc_tid = 0; | |
f1987b44 JL |
144 | list_for_each(tmp2, &ses->tcon_list) { |
145 | tcon = list_entry(tmp2, struct cifsTconInfo, tcon_list); | |
3b795210 | 146 | tcon->need_reconnect = true; |
f1987b44 | 147 | } |
1da177e4 | 148 | } |
f1987b44 | 149 | read_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 150 | /* do not want to be sending data on a socket we are freeing */ |
72ca545b | 151 | mutex_lock(&server->srv_mutex); |
fb8c4b14 | 152 | if (server->ssocket) { |
467a8f8d | 153 | cFYI(1, ("State: 0x%x Flags: 0x%lx", server->ssocket->state, |
1da177e4 | 154 | server->ssocket->flags)); |
91cf45f0 | 155 | kernel_sock_shutdown(server->ssocket, SHUT_WR); |
fb8c4b14 | 156 | cFYI(1, ("Post shutdown state: 0x%x Flags: 0x%lx", |
467a8f8d | 157 | server->ssocket->state, |
1da177e4 LT |
158 | server->ssocket->flags)); |
159 | sock_release(server->ssocket); | |
160 | server->ssocket = NULL; | |
161 | } | |
162 | ||
163 | spin_lock(&GlobalMid_Lock); | |
164 | list_for_each(tmp, &server->pending_mid_q) { | |
165 | mid_entry = list_entry(tmp, struct | |
166 | mid_q_entry, | |
167 | qhead); | |
ad8b15f0 | 168 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { |
09d1db5c SF |
169 | /* Mark other intransit requests as needing |
170 | retry so we do not immediately mark the | |
171 | session bad again (ie after we reconnect | |
172 | below) as they timeout too */ | |
ad8b15f0 | 173 | mid_entry->midState = MID_RETRY_NEEDED; |
1da177e4 LT |
174 | } |
175 | } | |
176 | spin_unlock(&GlobalMid_Lock); | |
72ca545b | 177 | mutex_unlock(&server->srv_mutex); |
1da177e4 | 178 | |
469ee614 JL |
179 | while ((server->tcpStatus != CifsExiting) && |
180 | (server->tcpStatus != CifsGood)) { | |
6c3d8909 | 181 | try_to_freeze(); |
bcf4b106 | 182 | if (server->addr.sockAddr6.sin6_family == AF_INET6) |
d5c5605c | 183 | rc = ipv6_connect(server); |
bcf4b106 JL |
184 | else |
185 | rc = ipv4_connect(server); | |
fb8c4b14 SF |
186 | if (rc) { |
187 | cFYI(1, ("reconnect error %d", rc)); | |
0cb766ae | 188 | msleep(3000); |
1da177e4 LT |
189 | } else { |
190 | atomic_inc(&tcpSesReconnectCount); | |
191 | spin_lock(&GlobalMid_Lock); | |
469ee614 | 192 | if (server->tcpStatus != CifsExiting) |
1da177e4 | 193 | server->tcpStatus = CifsGood; |
ad009ac9 | 194 | server->sequence_number = 0; |
fb8c4b14 | 195 | spin_unlock(&GlobalMid_Lock); |
1da177e4 LT |
196 | /* atomic_set(&server->inFlight,0);*/ |
197 | wake_up(&server->response_q); | |
198 | } | |
199 | } | |
200 | return rc; | |
201 | } | |
202 | ||
fb8c4b14 | 203 | /* |
e4eb295d SF |
204 | return codes: |
205 | 0 not a transact2, or all data present | |
206 | >0 transact2 with that much data missing | |
207 | -EINVAL = invalid transact2 | |
208 | ||
209 | */ | |
fb8c4b14 | 210 | static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) |
e4eb295d | 211 | { |
fb8c4b14 SF |
212 | struct smb_t2_rsp *pSMBt; |
213 | int total_data_size; | |
e4eb295d SF |
214 | int data_in_this_rsp; |
215 | int remaining; | |
216 | ||
fb8c4b14 | 217 | if (pSMB->Command != SMB_COM_TRANSACTION2) |
e4eb295d SF |
218 | return 0; |
219 | ||
fb8c4b14 SF |
220 | /* check for plausible wct, bcc and t2 data and parm sizes */ |
221 | /* check for parm and data offset going beyond end of smb */ | |
222 | if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
467a8f8d | 223 | cFYI(1, ("invalid transact2 word count")); |
e4eb295d SF |
224 | return -EINVAL; |
225 | } | |
226 | ||
227 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
228 | ||
229 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
230 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
231 | ||
232 | remaining = total_data_size - data_in_this_rsp; | |
233 | ||
fb8c4b14 | 234 | if (remaining == 0) |
e4eb295d | 235 | return 0; |
fb8c4b14 | 236 | else if (remaining < 0) { |
467a8f8d | 237 | cFYI(1, ("total data %d smaller than data in frame %d", |
e4eb295d SF |
238 | total_data_size, data_in_this_rsp)); |
239 | return -EINVAL; | |
240 | } else { | |
467a8f8d | 241 | cFYI(1, ("missing %d bytes from transact2, check next response", |
e4eb295d | 242 | remaining)); |
fb8c4b14 SF |
243 | if (total_data_size > maxBufSize) { |
244 | cERROR(1, ("TotalDataSize %d is over maximum buffer %d", | |
245 | total_data_size, maxBufSize)); | |
246 | return -EINVAL; | |
e4eb295d SF |
247 | } |
248 | return remaining; | |
249 | } | |
250 | } | |
251 | ||
fb8c4b14 | 252 | static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) |
e4eb295d SF |
253 | { |
254 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
255 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
256 | int total_data_size; | |
257 | int total_in_buf; | |
258 | int remaining; | |
259 | int total_in_buf2; | |
fb8c4b14 SF |
260 | char *data_area_of_target; |
261 | char *data_area_of_buf2; | |
e4eb295d SF |
262 | __u16 byte_count; |
263 | ||
264 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
265 | ||
fb8c4b14 | 266 | if (total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { |
63135e08 | 267 | cFYI(1, ("total data size of primary and secondary t2 differ")); |
e4eb295d SF |
268 | } |
269 | ||
270 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
271 | ||
272 | remaining = total_data_size - total_in_buf; | |
50c2f753 | 273 | |
fb8c4b14 | 274 | if (remaining < 0) |
e4eb295d SF |
275 | return -EINVAL; |
276 | ||
fb8c4b14 | 277 | if (remaining == 0) /* nothing to do, ignore */ |
e4eb295d | 278 | return 0; |
50c2f753 | 279 | |
e4eb295d | 280 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); |
fb8c4b14 | 281 | if (remaining < total_in_buf2) { |
467a8f8d | 282 | cFYI(1, ("transact2 2nd response contains too much data")); |
e4eb295d SF |
283 | } |
284 | ||
285 | /* find end of first SMB data area */ | |
fb8c4b14 | 286 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + |
e4eb295d SF |
287 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); |
288 | /* validate target area */ | |
289 | ||
290 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
fb8c4b14 | 291 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); |
e4eb295d SF |
292 | |
293 | data_area_of_target += total_in_buf; | |
294 | ||
295 | /* copy second buffer into end of first buffer */ | |
fb8c4b14 | 296 | memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); |
e4eb295d SF |
297 | total_in_buf += total_in_buf2; |
298 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
299 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
300 | byte_count += total_in_buf2; | |
301 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
302 | ||
70ca734a | 303 | byte_count = pTargetSMB->smb_buf_length; |
e4eb295d SF |
304 | byte_count += total_in_buf2; |
305 | ||
306 | /* BB also add check that we are not beyond maximum buffer size */ | |
50c2f753 | 307 | |
70ca734a | 308 | pTargetSMB->smb_buf_length = byte_count; |
e4eb295d | 309 | |
fb8c4b14 | 310 | if (remaining == total_in_buf2) { |
467a8f8d | 311 | cFYI(1, ("found the last secondary response")); |
e4eb295d SF |
312 | return 0; /* we are done */ |
313 | } else /* more responses to go */ | |
314 | return 1; | |
315 | ||
316 | } | |
317 | ||
1da177e4 LT |
318 | static int |
319 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
320 | { | |
321 | int length; | |
322 | unsigned int pdu_length, total_read; | |
323 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
324 | struct smb_hdr *bigbuf = NULL; |
325 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
326 | struct msghdr smb_msg; |
327 | struct kvec iov; | |
328 | struct socket *csocket = server->ssocket; | |
329 | struct list_head *tmp; | |
330 | struct cifsSesInfo *ses; | |
331 | struct task_struct *task_to_wake = NULL; | |
332 | struct mid_q_entry *mid_entry; | |
70ca734a | 333 | char temp; |
4b18f2a9 SF |
334 | bool isLargeBuf = false; |
335 | bool isMultiRsp; | |
e4eb295d | 336 | int reconnect; |
1da177e4 | 337 | |
1da177e4 | 338 | current->flags |= PF_MEMALLOC; |
ba25f9dc | 339 | cFYI(1, ("Demultiplex PID: %d", task_pid_nr(current))); |
93d0ec85 JL |
340 | |
341 | length = atomic_inc_return(&tcpSesAllocCount); | |
342 | if (length > 1) | |
26f57364 SF |
343 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, |
344 | GFP_KERNEL); | |
1da177e4 | 345 | |
83144186 | 346 | set_freezable(); |
469ee614 | 347 | while (server->tcpStatus != CifsExiting) { |
ede1327e SF |
348 | if (try_to_freeze()) |
349 | continue; | |
b8643e1b SF |
350 | if (bigbuf == NULL) { |
351 | bigbuf = cifs_buf_get(); | |
0fd1ffe0 PM |
352 | if (!bigbuf) { |
353 | cERROR(1, ("No memory for large SMB response")); | |
b8643e1b SF |
354 | msleep(3000); |
355 | /* retry will check if exiting */ | |
356 | continue; | |
357 | } | |
0fd1ffe0 PM |
358 | } else if (isLargeBuf) { |
359 | /* we are reusing a dirty large buf, clear its start */ | |
26f57364 | 360 | memset(bigbuf, 0, sizeof(struct smb_hdr)); |
1da177e4 | 361 | } |
b8643e1b SF |
362 | |
363 | if (smallbuf == NULL) { | |
364 | smallbuf = cifs_small_buf_get(); | |
0fd1ffe0 PM |
365 | if (!smallbuf) { |
366 | cERROR(1, ("No memory for SMB response")); | |
b8643e1b SF |
367 | msleep(1000); |
368 | /* retry will check if exiting */ | |
369 | continue; | |
370 | } | |
371 | /* beginning of smb buffer is cleared in our buf_get */ | |
372 | } else /* if existing small buf clear beginning */ | |
26f57364 | 373 | memset(smallbuf, 0, sizeof(struct smb_hdr)); |
b8643e1b | 374 | |
4b18f2a9 SF |
375 | isLargeBuf = false; |
376 | isMultiRsp = false; | |
b8643e1b | 377 | smb_buffer = smallbuf; |
1da177e4 LT |
378 | iov.iov_base = smb_buffer; |
379 | iov.iov_len = 4; | |
380 | smb_msg.msg_control = NULL; | |
381 | smb_msg.msg_controllen = 0; | |
f01d5e14 SF |
382 | pdu_length = 4; /* enough to get RFC1001 header */ |
383 | incomplete_rcv: | |
1da177e4 LT |
384 | length = |
385 | kernel_recvmsg(csocket, &smb_msg, | |
f01d5e14 | 386 | &iov, 1, pdu_length, 0 /* BB other flags? */); |
1da177e4 | 387 | |
469ee614 | 388 | if (server->tcpStatus == CifsExiting) { |
1da177e4 LT |
389 | break; |
390 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
0fd1ffe0 | 391 | cFYI(1, ("Reconnect after server stopped responding")); |
1da177e4 | 392 | cifs_reconnect(server); |
0fd1ffe0 | 393 | cFYI(1, ("call to reconnect done")); |
1da177e4 LT |
394 | csocket = server->ssocket; |
395 | continue; | |
396 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 397 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
398 | allowing socket to clear and app threads to set |
399 | tcpStatus CifsNeedReconnect if server hung */ | |
c527c8a7 SF |
400 | if (pdu_length < 4) { |
401 | iov.iov_base = (4 - pdu_length) + | |
402 | (char *)smb_buffer; | |
403 | iov.iov_len = pdu_length; | |
404 | smb_msg.msg_control = NULL; | |
405 | smb_msg.msg_controllen = 0; | |
c18c732e | 406 | goto incomplete_rcv; |
c527c8a7 | 407 | } else |
c18c732e | 408 | continue; |
1da177e4 | 409 | } else if (length <= 0) { |
0fd1ffe0 PM |
410 | if (server->tcpStatus == CifsNew) { |
411 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
412 | /* some servers kill the TCP session rather than |
413 | returning an SMB negprot error, in which | |
414 | case reconnecting here is not going to help, | |
415 | and so simply return error to mount */ | |
1da177e4 LT |
416 | break; |
417 | } | |
0fd1ffe0 | 418 | if (!try_to_freeze() && (length == -EINTR)) { |
467a8f8d | 419 | cFYI(1, ("cifsd thread killed")); |
1da177e4 LT |
420 | break; |
421 | } | |
467a8f8d | 422 | cFYI(1, ("Reconnect after unexpected peek error %d", |
57337e42 | 423 | length)); |
1da177e4 LT |
424 | cifs_reconnect(server); |
425 | csocket = server->ssocket; | |
426 | wake_up(&server->response_q); | |
427 | continue; | |
2a974680 PT |
428 | } else if (length < pdu_length) { |
429 | cFYI(1, ("requested %d bytes but only got %d bytes", | |
430 | pdu_length, length)); | |
f01d5e14 | 431 | pdu_length -= length; |
f01d5e14 SF |
432 | msleep(1); |
433 | goto incomplete_rcv; | |
46810cbf | 434 | } |
1da177e4 | 435 | |
70ca734a SF |
436 | /* The right amount was read from socket - 4 bytes */ |
437 | /* so we can now interpret the length field */ | |
46810cbf | 438 | |
70ca734a SF |
439 | /* the first byte big endian of the length field, |
440 | is actually not part of the length but the type | |
441 | with the most common, zero, as regular data */ | |
442 | temp = *((char *) smb_buffer); | |
46810cbf | 443 | |
fb8c4b14 | 444 | /* Note that FC 1001 length is big endian on the wire, |
70ca734a SF |
445 | but we convert it here so it is always manipulated |
446 | as host byte order */ | |
5ca33c6a | 447 | pdu_length = be32_to_cpu((__force __be32)smb_buffer->smb_buf_length); |
70ca734a SF |
448 | smb_buffer->smb_buf_length = pdu_length; |
449 | ||
467a8f8d | 450 | cFYI(1, ("rfc1002 length 0x%x", pdu_length+4)); |
46810cbf | 451 | |
70ca734a | 452 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
fb8c4b14 | 453 | continue; |
70ca734a | 454 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
467a8f8d | 455 | cFYI(1, ("Good RFC 1002 session rsp")); |
e4eb295d | 456 | continue; |
70ca734a | 457 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
fb8c4b14 | 458 | /* we get this from Windows 98 instead of |
46810cbf | 459 | an error on SMB negprot response */ |
fb8c4b14 | 460 | cFYI(1, ("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 461 | pdu_length)); |
fb8c4b14 SF |
462 | if (server->tcpStatus == CifsNew) { |
463 | /* if nack on negprot (rather than | |
46810cbf SF |
464 | ret of smb negprot error) reconnecting |
465 | not going to help, ret error to mount */ | |
466 | break; | |
467 | } else { | |
468 | /* give server a second to | |
469 | clean up before reconnect attempt */ | |
470 | msleep(1000); | |
471 | /* always try 445 first on reconnect | |
472 | since we get NACK on some if we ever | |
fb8c4b14 | 473 | connected to port 139 (the NACK is |
46810cbf SF |
474 | since we do not begin with RFC1001 |
475 | session initialize frame) */ | |
fb8c4b14 | 476 | server->addr.sockAddr.sin_port = |
46810cbf | 477 | htons(CIFS_PORT); |
1da177e4 LT |
478 | cifs_reconnect(server); |
479 | csocket = server->ssocket; | |
46810cbf | 480 | wake_up(&server->response_q); |
1da177e4 | 481 | continue; |
46810cbf | 482 | } |
70ca734a | 483 | } else if (temp != (char) 0) { |
fb8c4b14 | 484 | cERROR(1, ("Unknown RFC 1002 frame")); |
70ca734a SF |
485 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
486 | length); | |
46810cbf SF |
487 | cifs_reconnect(server); |
488 | csocket = server->ssocket; | |
489 | continue; | |
e4eb295d SF |
490 | } |
491 | ||
492 | /* else we have an SMB response */ | |
fb8c4b14 | 493 | if ((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || |
26f57364 | 494 | (pdu_length < sizeof(struct smb_hdr) - 1 - 4)) { |
e4eb295d | 495 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 496 | length, pdu_length+4)); |
e4eb295d SF |
497 | cifs_reconnect(server); |
498 | csocket = server->ssocket; | |
499 | wake_up(&server->response_q); | |
500 | continue; | |
fb8c4b14 | 501 | } |
e4eb295d SF |
502 | |
503 | /* else length ok */ | |
504 | reconnect = 0; | |
505 | ||
fb8c4b14 | 506 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
4b18f2a9 | 507 | isLargeBuf = true; |
e4eb295d SF |
508 | memcpy(bigbuf, smallbuf, 4); |
509 | smb_buffer = bigbuf; | |
510 | } | |
511 | length = 0; | |
512 | iov.iov_base = 4 + (char *)smb_buffer; | |
513 | iov.iov_len = pdu_length; | |
fb8c4b14 | 514 | for (total_read = 0; total_read < pdu_length; |
e4eb295d SF |
515 | total_read += length) { |
516 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
517 | pdu_length - total_read, 0); | |
469ee614 | 518 | if ((server->tcpStatus == CifsExiting) || |
e4eb295d SF |
519 | (length == -EINTR)) { |
520 | /* then will exit */ | |
521 | reconnect = 2; | |
522 | break; | |
523 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
524 | cifs_reconnect(server); |
525 | csocket = server->ssocket; | |
fb8c4b14 | 526 | /* Reconnect wakes up rspns q */ |
e4eb295d SF |
527 | /* Now we will reread sock */ |
528 | reconnect = 1; | |
529 | break; | |
fb8c4b14 | 530 | } else if ((length == -ERESTARTSYS) || |
e4eb295d SF |
531 | (length == -EAGAIN)) { |
532 | msleep(1); /* minimum sleep to prevent looping, | |
fb8c4b14 | 533 | allowing socket to clear and app |
e4eb295d SF |
534 | threads to set tcpStatus |
535 | CifsNeedReconnect if server hung*/ | |
c18c732e | 536 | length = 0; |
46810cbf | 537 | continue; |
e4eb295d | 538 | } else if (length <= 0) { |
fb8c4b14 | 539 | cERROR(1, ("Received no data, expecting %d", |
e4eb295d SF |
540 | pdu_length - total_read)); |
541 | cifs_reconnect(server); | |
542 | csocket = server->ssocket; | |
543 | reconnect = 1; | |
544 | break; | |
46810cbf | 545 | } |
e4eb295d | 546 | } |
fb8c4b14 | 547 | if (reconnect == 2) |
e4eb295d | 548 | break; |
fb8c4b14 | 549 | else if (reconnect == 1) |
e4eb295d | 550 | continue; |
1da177e4 | 551 | |
e4eb295d | 552 | length += 4; /* account for rfc1002 hdr */ |
50c2f753 | 553 | |
09d1db5c | 554 | |
e4eb295d | 555 | dump_smb(smb_buffer, length); |
184ed211 | 556 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 557 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
558 | continue; |
559 | } | |
1da177e4 | 560 | |
e4eb295d SF |
561 | |
562 | task_to_wake = NULL; | |
563 | spin_lock(&GlobalMid_Lock); | |
564 | list_for_each(tmp, &server->pending_mid_q) { | |
565 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
566 | ||
50c2f753 | 567 | if ((mid_entry->mid == smb_buffer->Mid) && |
e4eb295d SF |
568 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && |
569 | (mid_entry->command == smb_buffer->Command)) { | |
fb8c4b14 | 570 | if (check2ndT2(smb_buffer,server->maxBuf) > 0) { |
e4eb295d | 571 | /* We have a multipart transact2 resp */ |
4b18f2a9 | 572 | isMultiRsp = true; |
fb8c4b14 | 573 | if (mid_entry->resp_buf) { |
e4eb295d | 574 | /* merge response - fix up 1st*/ |
50c2f753 | 575 | if (coalesce_t2(smb_buffer, |
e4eb295d | 576 | mid_entry->resp_buf)) { |
4b18f2a9 SF |
577 | mid_entry->multiRsp = |
578 | true; | |
e4eb295d SF |
579 | break; |
580 | } else { | |
581 | /* all parts received */ | |
4b18f2a9 SF |
582 | mid_entry->multiEnd = |
583 | true; | |
50c2f753 | 584 | goto multi_t2_fnd; |
e4eb295d SF |
585 | } |
586 | } else { | |
fb8c4b14 | 587 | if (!isLargeBuf) { |
e4eb295d SF |
588 | cERROR(1,("1st trans2 resp needs bigbuf")); |
589 | /* BB maybe we can fix this up, switch | |
50c2f753 | 590 | to already allocated large buffer? */ |
e4eb295d | 591 | } else { |
cd63499c | 592 | /* Have first buffer */ |
e4eb295d SF |
593 | mid_entry->resp_buf = |
594 | smb_buffer; | |
4b18f2a9 SF |
595 | mid_entry->largeBuf = |
596 | true; | |
e4eb295d SF |
597 | bigbuf = NULL; |
598 | } | |
599 | } | |
600 | break; | |
50c2f753 | 601 | } |
e4eb295d | 602 | mid_entry->resp_buf = smb_buffer; |
4b18f2a9 | 603 | mid_entry->largeBuf = isLargeBuf; |
e4eb295d SF |
604 | multi_t2_fnd: |
605 | task_to_wake = mid_entry->tsk; | |
606 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
607 | #ifdef CONFIG_CIFS_STATS2 |
608 | mid_entry->when_received = jiffies; | |
609 | #endif | |
3a5ff61c SF |
610 | /* so we do not time out requests to server |
611 | which is still responding (since server could | |
612 | be busy but not dead) */ | |
613 | server->lstrp = jiffies; | |
e4eb295d | 614 | break; |
46810cbf | 615 | } |
1da177e4 | 616 | } |
e4eb295d SF |
617 | spin_unlock(&GlobalMid_Lock); |
618 | if (task_to_wake) { | |
cd63499c | 619 | /* Was previous buf put in mpx struct for multi-rsp? */ |
fb8c4b14 | 620 | if (!isMultiRsp) { |
cd63499c | 621 | /* smb buffer will be freed by user thread */ |
26f57364 | 622 | if (isLargeBuf) |
cd63499c | 623 | bigbuf = NULL; |
26f57364 | 624 | else |
cd63499c SF |
625 | smallbuf = NULL; |
626 | } | |
e4eb295d | 627 | wake_up_process(task_to_wake); |
4b18f2a9 SF |
628 | } else if (!is_valid_oplock_break(smb_buffer, server) && |
629 | !isMultiRsp) { | |
50c2f753 SF |
630 | cERROR(1, ("No task to wake, unknown frame received! " |
631 | "NumMids %d", midCount.counter)); | |
632 | cifs_dump_mem("Received Data is: ", (char *)smb_buffer, | |
70ca734a | 633 | sizeof(struct smb_hdr)); |
3979877e SF |
634 | #ifdef CONFIG_CIFS_DEBUG2 |
635 | cifs_dump_detail(smb_buffer); | |
636 | cifs_dump_mids(server); | |
637 | #endif /* CIFS_DEBUG2 */ | |
50c2f753 | 638 | |
e4eb295d SF |
639 | } |
640 | } /* end while !EXITING */ | |
641 | ||
e7ddee90 JL |
642 | /* take it off the list, if it's not already */ |
643 | write_lock(&cifs_tcp_ses_lock); | |
644 | list_del_init(&server->tcp_ses_list); | |
645 | write_unlock(&cifs_tcp_ses_lock); | |
646 | ||
1da177e4 LT |
647 | spin_lock(&GlobalMid_Lock); |
648 | server->tcpStatus = CifsExiting; | |
e691b9d1 | 649 | spin_unlock(&GlobalMid_Lock); |
dbdbb876 | 650 | wake_up_all(&server->response_q); |
e691b9d1 | 651 | |
31ca3bc3 SF |
652 | /* check if we have blocked requests that need to free */ |
653 | /* Note that cifs_max_pending is normally 50, but | |
654 | can be set at module install time to as little as two */ | |
e691b9d1 | 655 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 | 656 | if (atomic_read(&server->inFlight) >= cifs_max_pending) |
31ca3bc3 SF |
657 | atomic_set(&server->inFlight, cifs_max_pending - 1); |
658 | /* We do not want to set the max_pending too low or we | |
659 | could end up with the counter going negative */ | |
1da177e4 | 660 | spin_unlock(&GlobalMid_Lock); |
50c2f753 | 661 | /* Although there should not be any requests blocked on |
1da177e4 | 662 | this queue it can not hurt to be paranoid and try to wake up requests |
09d1db5c | 663 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
664 | to the same server - they now will see the session is in exit state |
665 | and get out of SendReceive. */ | |
666 | wake_up_all(&server->request_q); | |
667 | /* give those requests time to exit */ | |
b8643e1b | 668 | msleep(125); |
50c2f753 | 669 | |
fb8c4b14 | 670 | if (server->ssocket) { |
1da177e4 LT |
671 | sock_release(csocket); |
672 | server->ssocket = NULL; | |
673 | } | |
b8643e1b | 674 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
a8a11d39 MK |
675 | cifs_buf_release(bigbuf); |
676 | if (smallbuf) /* no sense logging a debug message if NULL */ | |
b8643e1b | 677 | cifs_small_buf_release(smallbuf); |
1da177e4 | 678 | |
14fbf50d JL |
679 | /* |
680 | * BB: we shouldn't have to do any of this. It shouldn't be | |
681 | * possible to exit from the thread with active SMB sessions | |
682 | */ | |
683 | read_lock(&cifs_tcp_ses_lock); | |
1da177e4 | 684 | if (list_empty(&server->pending_mid_q)) { |
09d1db5c SF |
685 | /* loop through server session structures attached to this and |
686 | mark them dead */ | |
14fbf50d JL |
687 | list_for_each(tmp, &server->smb_ses_list) { |
688 | ses = list_entry(tmp, struct cifsSesInfo, | |
689 | smb_ses_list); | |
690 | ses->status = CifsExiting; | |
691 | ses->server = NULL; | |
1da177e4 | 692 | } |
14fbf50d | 693 | read_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 694 | } else { |
31ca3bc3 SF |
695 | /* although we can not zero the server struct pointer yet, |
696 | since there are active requests which may depnd on them, | |
697 | mark the corresponding SMB sessions as exiting too */ | |
14fbf50d | 698 | list_for_each(tmp, &server->smb_ses_list) { |
31ca3bc3 | 699 | ses = list_entry(tmp, struct cifsSesInfo, |
14fbf50d JL |
700 | smb_ses_list); |
701 | ses->status = CifsExiting; | |
31ca3bc3 SF |
702 | } |
703 | ||
1da177e4 LT |
704 | spin_lock(&GlobalMid_Lock); |
705 | list_for_each(tmp, &server->pending_mid_q) { | |
706 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
707 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
50c2f753 SF |
708 | cFYI(1, ("Clearing Mid 0x%x - waking up ", |
709 | mid_entry->mid)); | |
1da177e4 | 710 | task_to_wake = mid_entry->tsk; |
26f57364 | 711 | if (task_to_wake) |
1da177e4 | 712 | wake_up_process(task_to_wake); |
1da177e4 LT |
713 | } |
714 | } | |
715 | spin_unlock(&GlobalMid_Lock); | |
14fbf50d | 716 | read_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 717 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 718 | msleep(125); |
1da177e4 LT |
719 | } |
720 | ||
f191401f | 721 | if (!list_empty(&server->pending_mid_q)) { |
50c2f753 | 722 | /* mpx threads have not exited yet give them |
1da177e4 | 723 | at least the smb send timeout time for long ops */ |
31ca3bc3 SF |
724 | /* due to delays on oplock break requests, we need |
725 | to wait at least 45 seconds before giving up | |
726 | on a request getting a response and going ahead | |
727 | and killing cifsd */ | |
1da177e4 | 728 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 729 | msleep(46000); |
1da177e4 LT |
730 | /* if threads still have not exited they are probably never |
731 | coming home not much else we can do but free the memory */ | |
732 | } | |
1da177e4 | 733 | |
31ca3bc3 SF |
734 | /* last chance to mark ses pointers invalid |
735 | if there are any pointing to this (e.g | |
50c2f753 | 736 | if a crazy root user tried to kill cifsd |
31ca3bc3 | 737 | kernel thread explicitly this might happen) */ |
14fbf50d JL |
738 | /* BB: This shouldn't be necessary, see above */ |
739 | read_lock(&cifs_tcp_ses_lock); | |
740 | list_for_each(tmp, &server->smb_ses_list) { | |
741 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); | |
742 | ses->server = NULL; | |
31ca3bc3 | 743 | } |
14fbf50d | 744 | read_unlock(&cifs_tcp_ses_lock); |
31ca3bc3 | 745 | |
c359cf3c | 746 | kfree(server->hostname); |
b1c8d2b4 | 747 | task_to_wake = xchg(&server->tsk, NULL); |
31ca3bc3 | 748 | kfree(server); |
93d0ec85 JL |
749 | |
750 | length = atomic_dec_return(&tcpSesAllocCount); | |
26f57364 SF |
751 | if (length > 0) |
752 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, | |
753 | GFP_KERNEL); | |
50c2f753 | 754 | |
b1c8d2b4 JL |
755 | /* if server->tsk was NULL then wait for a signal before exiting */ |
756 | if (!task_to_wake) { | |
757 | set_current_state(TASK_INTERRUPTIBLE); | |
758 | while (!signal_pending(current)) { | |
759 | schedule(); | |
760 | set_current_state(TASK_INTERRUPTIBLE); | |
761 | } | |
762 | set_current_state(TASK_RUNNING); | |
763 | } | |
764 | ||
0468a2cf | 765 | module_put_and_exit(0); |
1da177e4 LT |
766 | } |
767 | ||
c359cf3c JL |
768 | /* extract the host portion of the UNC string */ |
769 | static char * | |
770 | extract_hostname(const char *unc) | |
771 | { | |
772 | const char *src; | |
773 | char *dst, *delim; | |
774 | unsigned int len; | |
775 | ||
776 | /* skip double chars at beginning of string */ | |
777 | /* BB: check validity of these bytes? */ | |
778 | src = unc + 2; | |
779 | ||
780 | /* delimiter between hostname and sharename is always '\\' now */ | |
781 | delim = strchr(src, '\\'); | |
782 | if (!delim) | |
783 | return ERR_PTR(-EINVAL); | |
784 | ||
785 | len = delim - src; | |
786 | dst = kmalloc((len + 1), GFP_KERNEL); | |
787 | if (dst == NULL) | |
788 | return ERR_PTR(-ENOMEM); | |
789 | ||
790 | memcpy(dst, src, len); | |
791 | dst[len] = '\0'; | |
792 | ||
793 | return dst; | |
794 | } | |
795 | ||
1da177e4 | 796 | static int |
50c2f753 SF |
797 | cifs_parse_mount_options(char *options, const char *devname, |
798 | struct smb_vol *vol) | |
1da177e4 LT |
799 | { |
800 | char *value; | |
801 | char *data; | |
802 | unsigned int temp_len, i, j; | |
803 | char separator[2]; | |
804 | ||
805 | separator[0] = ','; | |
50c2f753 | 806 | separator[1] = 0; |
1da177e4 | 807 | |
12e36b2f | 808 | if (Local_System_Name[0] != 0) |
50c2f753 | 809 | memcpy(vol->source_rfc1001_name, Local_System_Name, 15); |
2cd646a2 | 810 | else { |
12e36b2f | 811 | char *nodename = utsname()->nodename; |
50c2f753 SF |
812 | int n = strnlen(nodename, 15); |
813 | memset(vol->source_rfc1001_name, 0x20, 15); | |
814 | for (i = 0; i < n; i++) { | |
2cd646a2 SF |
815 | /* does not have to be perfect mapping since field is |
816 | informational, only used for servers that do not support | |
817 | port 445 and it can be overridden at mount time */ | |
12e36b2f | 818 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
2cd646a2 | 819 | } |
1da177e4 LT |
820 | } |
821 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
822 | /* null target name indicates to use *SMBSERVR default called name |
823 | if we end up sending RFC1001 session initialize */ | |
824 | vol->target_rfc1001_name[0] = 0; | |
1da177e4 LT |
825 | vol->linux_uid = current->uid; /* current->euid instead? */ |
826 | vol->linux_gid = current->gid; | |
827 | vol->dir_mode = S_IRWXUGO; | |
828 | /* 2767 perms indicate mandatory locking support */ | |
7505e052 | 829 | vol->file_mode = (S_IRWXUGO | S_ISGID) & (~S_IXGRP); |
1da177e4 LT |
830 | |
831 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
4b18f2a9 | 832 | vol->rw = true; |
ac67055e JA |
833 | /* default is always to request posix paths. */ |
834 | vol->posix_paths = 1; | |
835 | ||
1da177e4 LT |
836 | if (!options) |
837 | return 1; | |
838 | ||
50c2f753 | 839 | if (strncmp(options, "sep=", 4) == 0) { |
fb8c4b14 | 840 | if (options[4] != 0) { |
1da177e4 LT |
841 | separator[0] = options[4]; |
842 | options += 5; | |
843 | } else { | |
467a8f8d | 844 | cFYI(1, ("Null separator not allowed")); |
1da177e4 LT |
845 | } |
846 | } | |
50c2f753 | 847 | |
1da177e4 LT |
848 | while ((data = strsep(&options, separator)) != NULL) { |
849 | if (!*data) | |
850 | continue; | |
851 | if ((value = strchr(data, '=')) != NULL) | |
852 | *value++ = '\0'; | |
853 | ||
50c2f753 SF |
854 | /* Have to parse this before we parse for "user" */ |
855 | if (strnicmp(data, "user_xattr", 10) == 0) { | |
1da177e4 | 856 | vol->no_xattr = 0; |
50c2f753 | 857 | } else if (strnicmp(data, "nouser_xattr", 12) == 0) { |
1da177e4 LT |
858 | vol->no_xattr = 1; |
859 | } else if (strnicmp(data, "user", 4) == 0) { | |
4b952a9b | 860 | if (!value) { |
1da177e4 LT |
861 | printk(KERN_WARNING |
862 | "CIFS: invalid or missing username\n"); | |
863 | return 1; /* needs_arg; */ | |
fb8c4b14 | 864 | } else if (!*value) { |
4b952a9b SF |
865 | /* null user, ie anonymous, authentication */ |
866 | vol->nullauth = 1; | |
1da177e4 LT |
867 | } |
868 | if (strnlen(value, 200) < 200) { | |
869 | vol->username = value; | |
870 | } else { | |
871 | printk(KERN_WARNING "CIFS: username too long\n"); | |
872 | return 1; | |
873 | } | |
874 | } else if (strnicmp(data, "pass", 4) == 0) { | |
875 | if (!value) { | |
876 | vol->password = NULL; | |
877 | continue; | |
fb8c4b14 | 878 | } else if (value[0] == 0) { |
1da177e4 LT |
879 | /* check if string begins with double comma |
880 | since that would mean the password really | |
881 | does start with a comma, and would not | |
882 | indicate an empty string */ | |
fb8c4b14 | 883 | if (value[1] != separator[0]) { |
1da177e4 LT |
884 | vol->password = NULL; |
885 | continue; | |
886 | } | |
887 | } | |
888 | temp_len = strlen(value); | |
889 | /* removed password length check, NTLM passwords | |
890 | can be arbitrarily long */ | |
891 | ||
50c2f753 | 892 | /* if comma in password, the string will be |
1da177e4 LT |
893 | prematurely null terminated. Commas in password are |
894 | specified across the cifs mount interface by a double | |
895 | comma ie ,, and a comma used as in other cases ie ',' | |
896 | as a parameter delimiter/separator is single and due | |
897 | to the strsep above is temporarily zeroed. */ | |
898 | ||
899 | /* NB: password legally can have multiple commas and | |
900 | the only illegal character in a password is null */ | |
901 | ||
50c2f753 | 902 | if ((value[temp_len] == 0) && |
09d1db5c | 903 | (value[temp_len+1] == separator[0])) { |
1da177e4 LT |
904 | /* reinsert comma */ |
905 | value[temp_len] = separator[0]; | |
50c2f753 SF |
906 | temp_len += 2; /* move after second comma */ |
907 | while (value[temp_len] != 0) { | |
1da177e4 | 908 | if (value[temp_len] == separator[0]) { |
50c2f753 | 909 | if (value[temp_len+1] == |
09d1db5c SF |
910 | separator[0]) { |
911 | /* skip second comma */ | |
912 | temp_len++; | |
50c2f753 | 913 | } else { |
1da177e4 LT |
914 | /* single comma indicating start |
915 | of next parm */ | |
916 | break; | |
917 | } | |
918 | } | |
919 | temp_len++; | |
920 | } | |
fb8c4b14 | 921 | if (value[temp_len] == 0) { |
1da177e4 LT |
922 | options = NULL; |
923 | } else { | |
924 | value[temp_len] = 0; | |
925 | /* point option to start of next parm */ | |
926 | options = value + temp_len + 1; | |
927 | } | |
50c2f753 | 928 | /* go from value to value + temp_len condensing |
1da177e4 LT |
929 | double commas to singles. Note that this ends up |
930 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 931 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
fb8c4b14 | 932 | if (vol->password == NULL) { |
50c2f753 SF |
933 | printk(KERN_WARNING "CIFS: no memory " |
934 | "for password\n"); | |
433dc24f SF |
935 | return 1; |
936 | } | |
50c2f753 | 937 | for (i = 0, j = 0; i < temp_len; i++, j++) { |
1da177e4 | 938 | vol->password[j] = value[i]; |
fb8c4b14 | 939 | if (value[i] == separator[0] |
09d1db5c | 940 | && value[i+1] == separator[0]) { |
1da177e4 LT |
941 | /* skip second comma */ |
942 | i++; | |
943 | } | |
944 | } | |
945 | vol->password[j] = 0; | |
946 | } else { | |
e915fc49 | 947 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
fb8c4b14 | 948 | if (vol->password == NULL) { |
50c2f753 SF |
949 | printk(KERN_WARNING "CIFS: no memory " |
950 | "for password\n"); | |
433dc24f SF |
951 | return 1; |
952 | } | |
1da177e4 LT |
953 | strcpy(vol->password, value); |
954 | } | |
955 | } else if (strnicmp(data, "ip", 2) == 0) { | |
956 | if (!value || !*value) { | |
957 | vol->UNCip = NULL; | |
958 | } else if (strnlen(value, 35) < 35) { | |
959 | vol->UNCip = value; | |
960 | } else { | |
50c2f753 SF |
961 | printk(KERN_WARNING "CIFS: ip address " |
962 | "too long\n"); | |
1da177e4 LT |
963 | return 1; |
964 | } | |
50c2f753 SF |
965 | } else if (strnicmp(data, "sec", 3) == 0) { |
966 | if (!value || !*value) { | |
967 | cERROR(1, ("no security value specified")); | |
968 | continue; | |
969 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
970 | vol->secFlg |= CIFSSEC_MAY_KRB5 | | |
189acaae | 971 | CIFSSEC_MUST_SIGN; |
bf820679 | 972 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
50c2f753 SF |
973 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
974 | CIFSSEC_MAY_KRB5; */ | |
975 | cERROR(1, ("Krb5 cifs privacy not supported")); | |
bf820679 SF |
976 | return 1; |
977 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 978 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
bf820679 | 979 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 980 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 981 | CIFSSEC_MUST_SIGN; |
bf820679 | 982 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 983 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 984 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 985 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 986 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
987 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
988 | /* ntlm is default so can be turned off too */ | |
750d1151 | 989 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 990 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 991 | /* BB is there a better way to do this? */ |
750d1151 | 992 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
993 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
994 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
50c2f753 | 995 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 996 | #endif |
bf820679 | 997 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 998 | vol->nullauth = 1; |
50c2f753 SF |
999 | } else { |
1000 | cERROR(1, ("bad security option: %s", value)); | |
1001 | return 1; | |
1002 | } | |
1da177e4 LT |
1003 | } else if ((strnicmp(data, "unc", 3) == 0) |
1004 | || (strnicmp(data, "target", 6) == 0) | |
1005 | || (strnicmp(data, "path", 4) == 0)) { | |
1006 | if (!value || !*value) { | |
50c2f753 SF |
1007 | printk(KERN_WARNING "CIFS: invalid path to " |
1008 | "network resource\n"); | |
1da177e4 LT |
1009 | return 1; /* needs_arg; */ |
1010 | } | |
1011 | if ((temp_len = strnlen(value, 300)) < 300) { | |
50c2f753 | 1012 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1013 | if (vol->UNC == NULL) |
1da177e4 | 1014 | return 1; |
50c2f753 | 1015 | strcpy(vol->UNC, value); |
1da177e4 LT |
1016 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1017 | vol->UNC[0] = '\\'; | |
1018 | vol->UNC[1] = '\\'; | |
50c2f753 | 1019 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
1da177e4 | 1020 | printk(KERN_WARNING |
50c2f753 SF |
1021 | "CIFS: UNC Path does not begin " |
1022 | "with // or \\\\ \n"); | |
1da177e4 LT |
1023 | return 1; |
1024 | } | |
1025 | } else { | |
1026 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1027 | return 1; | |
1028 | } | |
1029 | } else if ((strnicmp(data, "domain", 3) == 0) | |
1030 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
1031 | if (!value || !*value) { | |
1032 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
1033 | return 1; /* needs_arg; */ | |
1034 | } | |
1035 | /* BB are there cases in which a comma can be valid in | |
1036 | a domain name and need special handling? */ | |
3979877e | 1037 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
1038 | vol->domainname = value; |
1039 | cFYI(1, ("Domain name set")); | |
1040 | } else { | |
50c2f753 SF |
1041 | printk(KERN_WARNING "CIFS: domain name too " |
1042 | "long\n"); | |
1da177e4 LT |
1043 | return 1; |
1044 | } | |
50c2f753 SF |
1045 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
1046 | if (!value || !*value) { | |
1047 | printk(KERN_WARNING | |
1048 | "CIFS: invalid path prefix\n"); | |
1049 | return 1; /* needs_argument */ | |
1050 | } | |
1051 | if ((temp_len = strnlen(value, 1024)) < 1024) { | |
4523cc30 | 1052 | if (value[0] != '/') |
2fe87f02 | 1053 | temp_len++; /* missing leading slash */ |
50c2f753 SF |
1054 | vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); |
1055 | if (vol->prepath == NULL) | |
1056 | return 1; | |
4523cc30 | 1057 | if (value[0] != '/') { |
2fe87f02 | 1058 | vol->prepath[0] = '/'; |
50c2f753 | 1059 | strcpy(vol->prepath+1, value); |
2fe87f02 | 1060 | } else |
50c2f753 SF |
1061 | strcpy(vol->prepath, value); |
1062 | cFYI(1, ("prefix path %s", vol->prepath)); | |
1063 | } else { | |
1064 | printk(KERN_WARNING "CIFS: prefix too long\n"); | |
1065 | return 1; | |
1066 | } | |
1da177e4 LT |
1067 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
1068 | if (!value || !*value) { | |
63135e08 SF |
1069 | printk(KERN_WARNING "CIFS: invalid iocharset " |
1070 | "specified\n"); | |
1da177e4 LT |
1071 | return 1; /* needs_arg; */ |
1072 | } | |
1073 | if (strnlen(value, 65) < 65) { | |
50c2f753 | 1074 | if (strnicmp(value, "default", 7)) |
1da177e4 | 1075 | vol->iocharset = value; |
50c2f753 SF |
1076 | /* if iocharset not set then load_nls_default |
1077 | is used by caller */ | |
1078 | cFYI(1, ("iocharset set to %s", value)); | |
1da177e4 | 1079 | } else { |
63135e08 SF |
1080 | printk(KERN_WARNING "CIFS: iocharset name " |
1081 | "too long.\n"); | |
1da177e4 LT |
1082 | return 1; |
1083 | } | |
1084 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1085 | if (value && *value) { | |
1086 | vol->linux_uid = | |
1087 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1088 | vol->override_uid = 1; |
1da177e4 LT |
1089 | } |
1090 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1091 | if (value && *value) { | |
1092 | vol->linux_gid = | |
1093 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1094 | vol->override_gid = 1; |
1da177e4 LT |
1095 | } |
1096 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1097 | if (value && *value) { | |
1098 | vol->file_mode = | |
1099 | simple_strtoul(value, &value, 0); | |
1100 | } | |
1101 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1102 | if (value && *value) { | |
1103 | vol->dir_mode = | |
1104 | simple_strtoul(value, &value, 0); | |
1105 | } | |
1106 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1107 | if (value && *value) { | |
1108 | vol->dir_mode = | |
1109 | simple_strtoul(value, &value, 0); | |
1110 | } | |
1111 | } else if (strnicmp(data, "port", 4) == 0) { | |
1112 | if (value && *value) { | |
1113 | vol->port = | |
1114 | simple_strtoul(value, &value, 0); | |
1115 | } | |
1116 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1117 | if (value && *value) { | |
1118 | vol->rsize = | |
1119 | simple_strtoul(value, &value, 0); | |
1120 | } | |
1121 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1122 | if (value && *value) { | |
1123 | vol->wsize = | |
1124 | simple_strtoul(value, &value, 0); | |
1125 | } | |
1126 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1127 | if (value && *value) { | |
1128 | vol->sockopt = | |
1129 | simple_strtoul(value, &value, 0); | |
1130 | } | |
1131 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1132 | if (!value || !*value || (*value == ' ')) { | |
63135e08 | 1133 | cFYI(1, ("invalid (empty) netbiosname")); |
1da177e4 | 1134 | } else { |
50c2f753 SF |
1135 | memset(vol->source_rfc1001_name, 0x20, 15); |
1136 | for (i = 0; i < 15; i++) { | |
1137 | /* BB are there cases in which a comma can be | |
1da177e4 LT |
1138 | valid in this workstation netbios name (and need |
1139 | special handling)? */ | |
1140 | ||
1141 | /* We do not uppercase netbiosname for user */ | |
50c2f753 | 1142 | if (value[i] == 0) |
1da177e4 | 1143 | break; |
50c2f753 SF |
1144 | else |
1145 | vol->source_rfc1001_name[i] = | |
1146 | value[i]; | |
1da177e4 LT |
1147 | } |
1148 | /* The string has 16th byte zero still from | |
1149 | set at top of the function */ | |
50c2f753 SF |
1150 | if ((i == 15) && (value[i] != 0)) |
1151 | printk(KERN_WARNING "CIFS: netbiosname" | |
1152 | " longer than 15 truncated.\n"); | |
a10faeb2 SF |
1153 | } |
1154 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1155 | /* servernetbiosname specified override *SMBSERVER */ | |
1156 | if (!value || !*value || (*value == ' ')) { | |
467a8f8d | 1157 | cFYI(1, ("empty server netbiosname specified")); |
a10faeb2 SF |
1158 | } else { |
1159 | /* last byte, type, is 0x20 for servr type */ | |
50c2f753 | 1160 | memset(vol->target_rfc1001_name, 0x20, 16); |
a10faeb2 | 1161 | |
50c2f753 | 1162 | for (i = 0; i < 15; i++) { |
a10faeb2 | 1163 | /* BB are there cases in which a comma can be |
50c2f753 SF |
1164 | valid in this workstation netbios name |
1165 | (and need special handling)? */ | |
a10faeb2 | 1166 | |
50c2f753 SF |
1167 | /* user or mount helper must uppercase |
1168 | the netbiosname */ | |
1169 | if (value[i] == 0) | |
a10faeb2 SF |
1170 | break; |
1171 | else | |
50c2f753 SF |
1172 | vol->target_rfc1001_name[i] = |
1173 | value[i]; | |
a10faeb2 SF |
1174 | } |
1175 | /* The string has 16th byte zero still from | |
1176 | set at top of the function */ | |
50c2f753 SF |
1177 | if ((i == 15) && (value[i] != 0)) |
1178 | printk(KERN_WARNING "CIFS: server net" | |
1179 | "biosname longer than 15 truncated.\n"); | |
1da177e4 LT |
1180 | } |
1181 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1182 | /* ignore */ | |
1183 | } else if (strnicmp(data, "version", 3) == 0) { | |
1184 | /* ignore */ | |
50c2f753 | 1185 | } else if (strnicmp(data, "guest", 5) == 0) { |
1da177e4 LT |
1186 | /* ignore */ |
1187 | } else if (strnicmp(data, "rw", 2) == 0) { | |
4b18f2a9 | 1188 | vol->rw = true; |
edf1ae40 SF |
1189 | } else if (strnicmp(data, "noblocksend", 11) == 0) { |
1190 | vol->noblocksnd = 1; | |
1191 | } else if (strnicmp(data, "noautotune", 10) == 0) { | |
1192 | vol->noautotune = 1; | |
1da177e4 LT |
1193 | } else if ((strnicmp(data, "suid", 4) == 0) || |
1194 | (strnicmp(data, "nosuid", 6) == 0) || | |
1195 | (strnicmp(data, "exec", 4) == 0) || | |
1196 | (strnicmp(data, "noexec", 6) == 0) || | |
1197 | (strnicmp(data, "nodev", 5) == 0) || | |
1198 | (strnicmp(data, "noauto", 6) == 0) || | |
1199 | (strnicmp(data, "dev", 3) == 0)) { | |
1200 | /* The mount tool or mount.cifs helper (if present) | |
50c2f753 SF |
1201 | uses these opts to set flags, and the flags are read |
1202 | by the kernel vfs layer before we get here (ie | |
1203 | before read super) so there is no point trying to | |
1204 | parse these options again and set anything and it | |
1205 | is ok to just ignore them */ | |
1da177e4 LT |
1206 | continue; |
1207 | } else if (strnicmp(data, "ro", 2) == 0) { | |
4b18f2a9 | 1208 | vol->rw = false; |
1da177e4 LT |
1209 | } else if (strnicmp(data, "hard", 4) == 0) { |
1210 | vol->retry = 1; | |
1211 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1212 | vol->retry = 0; | |
1213 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1214 | vol->noperm = 0; | |
1215 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1216 | vol->noperm = 1; | |
6a0b4824 SF |
1217 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1218 | vol->remap = 1; | |
1219 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1220 | vol->remap = 0; | |
50c2f753 SF |
1221 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1222 | vol->sfu_emul = 1; | |
1223 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1224 | vol->sfu_emul = 0; | |
2c1b8615 SF |
1225 | } else if (strnicmp(data, "nodfs", 5) == 0) { |
1226 | vol->nodfs = 1; | |
ac67055e JA |
1227 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1228 | vol->posix_paths = 1; | |
1229 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1230 | vol->posix_paths = 0; | |
c18c842b SF |
1231 | } else if (strnicmp(data, "nounix", 6) == 0) { |
1232 | vol->no_linux_ext = 1; | |
1233 | } else if (strnicmp(data, "nolinux", 7) == 0) { | |
1234 | vol->no_linux_ext = 1; | |
50c2f753 | 1235 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
a10faeb2 | 1236 | (strnicmp(data, "ignorecase", 10) == 0)) { |
50c2f753 | 1237 | vol->nocase = 1; |
c46fa8ac SF |
1238 | } else if (strnicmp(data, "brl", 3) == 0) { |
1239 | vol->nobrl = 0; | |
50c2f753 | 1240 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1241 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1242 | vol->nobrl = 1; |
d3485d37 SF |
1243 | /* turn off mandatory locking in mode |
1244 | if remote locking is turned off since the | |
1245 | local vfs will do advisory */ | |
50c2f753 SF |
1246 | if (vol->file_mode == |
1247 | (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
d3485d37 | 1248 | vol->file_mode = S_IALLUGO; |
1da177e4 LT |
1249 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1250 | vol->setuids = 1; | |
1251 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1252 | vol->setuids = 0; | |
d0a9c078 JL |
1253 | } else if (strnicmp(data, "dynperm", 7) == 0) { |
1254 | vol->dynperm = true; | |
1255 | } else if (strnicmp(data, "nodynperm", 9) == 0) { | |
1256 | vol->dynperm = false; | |
1da177e4 LT |
1257 | } else if (strnicmp(data, "nohard", 6) == 0) { |
1258 | vol->retry = 0; | |
1259 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1260 | vol->retry = 1; | |
1261 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1262 | vol->intr = 0; | |
1263 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1264 | vol->intr = 1; | |
50c2f753 | 1265 | } else if (strnicmp(data, "serverino", 7) == 0) { |
1da177e4 | 1266 | vol->server_ino = 1; |
50c2f753 | 1267 | } else if (strnicmp(data, "noserverino", 9) == 0) { |
1da177e4 | 1268 | vol->server_ino = 0; |
50c2f753 | 1269 | } else if (strnicmp(data, "cifsacl", 7) == 0) { |
0a4b92c0 SF |
1270 | vol->cifs_acl = 1; |
1271 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1272 | vol->cifs_acl = 0; | |
50c2f753 | 1273 | } else if (strnicmp(data, "acl", 3) == 0) { |
1da177e4 | 1274 | vol->no_psx_acl = 0; |
50c2f753 | 1275 | } else if (strnicmp(data, "noacl", 5) == 0) { |
1da177e4 | 1276 | vol->no_psx_acl = 1; |
84210e91 SF |
1277 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
1278 | } else if (strnicmp(data, "locallease", 6) == 0) { | |
1279 | vol->local_lease = 1; | |
1280 | #endif | |
50c2f753 | 1281 | } else if (strnicmp(data, "sign", 4) == 0) { |
750d1151 | 1282 | vol->secFlg |= CIFSSEC_MUST_SIGN; |
95b1cb90 SF |
1283 | } else if (strnicmp(data, "seal", 4) == 0) { |
1284 | /* we do not do the following in secFlags because seal | |
1285 | is a per tree connection (mount) not a per socket | |
1286 | or per-smb connection option in the protocol */ | |
1287 | /* vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
1288 | vol->seal = 1; | |
50c2f753 | 1289 | } else if (strnicmp(data, "direct", 6) == 0) { |
1da177e4 | 1290 | vol->direct_io = 1; |
50c2f753 | 1291 | } else if (strnicmp(data, "forcedirectio", 13) == 0) { |
1da177e4 | 1292 | vol->direct_io = 1; |
50c2f753 | 1293 | } else if (strnicmp(data, "in6_addr", 8) == 0) { |
1da177e4 LT |
1294 | if (!value || !*value) { |
1295 | vol->in6_addr = NULL; | |
1296 | } else if (strnlen(value, 49) == 48) { | |
1297 | vol->in6_addr = value; | |
1298 | } else { | |
50c2f753 SF |
1299 | printk(KERN_WARNING "CIFS: ip v6 address not " |
1300 | "48 characters long\n"); | |
1da177e4 LT |
1301 | return 1; |
1302 | } | |
1303 | } else if (strnicmp(data, "noac", 4) == 0) { | |
50c2f753 SF |
1304 | printk(KERN_WARNING "CIFS: Mount option noac not " |
1305 | "supported. Instead set " | |
1306 | "/proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1da177e4 | 1307 | } else |
50c2f753 SF |
1308 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n", |
1309 | data); | |
1da177e4 LT |
1310 | } |
1311 | if (vol->UNC == NULL) { | |
4523cc30 | 1312 | if (devname == NULL) { |
50c2f753 SF |
1313 | printk(KERN_WARNING "CIFS: Missing UNC name for mount " |
1314 | "target\n"); | |
1da177e4 LT |
1315 | return 1; |
1316 | } | |
1317 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
50c2f753 | 1318 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1319 | if (vol->UNC == NULL) |
1da177e4 | 1320 | return 1; |
50c2f753 | 1321 | strcpy(vol->UNC, devname); |
1da177e4 LT |
1322 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1323 | vol->UNC[0] = '\\'; | |
1324 | vol->UNC[1] = '\\'; | |
1325 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
50c2f753 SF |
1326 | printk(KERN_WARNING "CIFS: UNC Path does not " |
1327 | "begin with // or \\\\ \n"); | |
1da177e4 LT |
1328 | return 1; |
1329 | } | |
7c5e628f IM |
1330 | value = strpbrk(vol->UNC+2, "/\\"); |
1331 | if (value) | |
1332 | *value = '\\'; | |
1da177e4 LT |
1333 | } else { |
1334 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1335 | return 1; | |
1336 | } | |
1337 | } | |
fb8c4b14 | 1338 | if (vol->UNCip == NULL) |
1da177e4 LT |
1339 | vol->UNCip = &vol->UNC[2]; |
1340 | ||
1341 | return 0; | |
1342 | } | |
1343 | ||
e7ddee90 JL |
1344 | static struct TCP_Server_Info * |
1345 | cifs_find_tcp_session(struct sockaddr *addr) | |
1da177e4 LT |
1346 | { |
1347 | struct list_head *tmp; | |
e7ddee90 JL |
1348 | struct TCP_Server_Info *server; |
1349 | struct sockaddr_in *addr4 = (struct sockaddr_in *) addr; | |
1350 | struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *) addr; | |
1351 | ||
1352 | write_lock(&cifs_tcp_ses_lock); | |
1353 | list_for_each(tmp, &cifs_tcp_ses_list) { | |
1354 | server = list_entry(tmp, struct TCP_Server_Info, | |
1355 | tcp_ses_list); | |
e7ddee90 JL |
1356 | /* |
1357 | * the demux thread can exit on its own while still in CifsNew | |
1358 | * so don't accept any sockets in that state. Since the | |
1359 | * tcpStatus never changes back to CifsNew it's safe to check | |
1360 | * for this without a lock. | |
1361 | */ | |
1362 | if (server->tcpStatus == CifsNew) | |
1b20d672 CG |
1363 | continue; |
1364 | ||
e7ddee90 JL |
1365 | if (addr->sa_family == AF_INET && |
1366 | (addr4->sin_addr.s_addr != | |
1367 | server->addr.sockAddr.sin_addr.s_addr)) | |
1368 | continue; | |
1369 | else if (addr->sa_family == AF_INET6 && | |
1370 | memcmp(&server->addr.sockAddr6.sin6_addr, | |
1371 | &addr6->sin6_addr, sizeof(addr6->sin6_addr))) | |
1372 | continue; | |
1b20d672 | 1373 | |
e7ddee90 JL |
1374 | ++server->srv_count; |
1375 | write_unlock(&cifs_tcp_ses_lock); | |
d82c2df5 | 1376 | cFYI(1, ("Existing tcp session with server found")); |
e7ddee90 | 1377 | return server; |
1da177e4 | 1378 | } |
e7ddee90 | 1379 | write_unlock(&cifs_tcp_ses_lock); |
1da177e4 LT |
1380 | return NULL; |
1381 | } | |
1382 | ||
14fbf50d | 1383 | static void |
e7ddee90 | 1384 | cifs_put_tcp_session(struct TCP_Server_Info *server) |
1da177e4 | 1385 | { |
e7ddee90 | 1386 | struct task_struct *task; |
dea570e0 | 1387 | |
e7ddee90 JL |
1388 | write_lock(&cifs_tcp_ses_lock); |
1389 | if (--server->srv_count > 0) { | |
1390 | write_unlock(&cifs_tcp_ses_lock); | |
1391 | return; | |
1392 | } | |
dea570e0 | 1393 | |
e7ddee90 JL |
1394 | list_del_init(&server->tcp_ses_list); |
1395 | write_unlock(&cifs_tcp_ses_lock); | |
dea570e0 | 1396 | |
e7ddee90 JL |
1397 | spin_lock(&GlobalMid_Lock); |
1398 | server->tcpStatus = CifsExiting; | |
1399 | spin_unlock(&GlobalMid_Lock); | |
dea570e0 | 1400 | |
e7ddee90 JL |
1401 | task = xchg(&server->tsk, NULL); |
1402 | if (task) | |
1403 | force_sig(SIGKILL, task); | |
1da177e4 LT |
1404 | } |
1405 | ||
63c038c2 JL |
1406 | static struct TCP_Server_Info * |
1407 | cifs_get_tcp_session(struct smb_vol *volume_info) | |
1408 | { | |
1409 | struct TCP_Server_Info *tcp_ses = NULL; | |
1410 | struct sockaddr addr; | |
1411 | struct sockaddr_in *sin_server = (struct sockaddr_in *) &addr; | |
1412 | struct sockaddr_in6 *sin_server6 = (struct sockaddr_in6 *) &addr; | |
1413 | int rc; | |
1414 | ||
1415 | memset(&addr, 0, sizeof(struct sockaddr)); | |
1416 | ||
1417 | if (volume_info->UNCip && volume_info->UNC) { | |
1418 | rc = cifs_inet_pton(AF_INET, volume_info->UNCip, | |
1419 | &sin_server->sin_addr.s_addr); | |
1420 | ||
1421 | if (rc <= 0) { | |
1422 | /* not ipv4 address, try ipv6 */ | |
1423 | rc = cifs_inet_pton(AF_INET6, volume_info->UNCip, | |
1424 | &sin_server6->sin6_addr.in6_u); | |
1425 | if (rc > 0) | |
1426 | addr.sa_family = AF_INET6; | |
1427 | } else { | |
1428 | addr.sa_family = AF_INET; | |
1429 | } | |
1430 | ||
1431 | if (rc <= 0) { | |
1432 | /* we failed translating address */ | |
1433 | rc = -EINVAL; | |
1434 | goto out_err; | |
1435 | } | |
1436 | ||
1437 | cFYI(1, ("UNC: %s ip: %s", volume_info->UNC, | |
1438 | volume_info->UNCip)); | |
1439 | } else if (volume_info->UNCip) { | |
1440 | /* BB using ip addr as tcp_ses name to connect to the | |
1441 | DFS root below */ | |
1442 | cERROR(1, ("Connecting to DFS root not implemented yet")); | |
1443 | rc = -EINVAL; | |
1444 | goto out_err; | |
1445 | } else /* which tcp_sess DFS root would we conect to */ { | |
1446 | cERROR(1, | |
1447 | ("CIFS mount error: No UNC path (e.g. -o " | |
1448 | "unc=//192.168.1.100/public) specified")); | |
1449 | rc = -EINVAL; | |
1450 | goto out_err; | |
1451 | } | |
1452 | ||
1453 | /* see if we already have a matching tcp_ses */ | |
1454 | tcp_ses = cifs_find_tcp_session(&addr); | |
1455 | if (tcp_ses) | |
1456 | return tcp_ses; | |
1457 | ||
1458 | tcp_ses = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); | |
1459 | if (!tcp_ses) { | |
1460 | rc = -ENOMEM; | |
1461 | goto out_err; | |
1462 | } | |
1463 | ||
1464 | tcp_ses->hostname = extract_hostname(volume_info->UNC); | |
1465 | if (IS_ERR(tcp_ses->hostname)) { | |
1466 | rc = PTR_ERR(tcp_ses->hostname); | |
1467 | goto out_err; | |
1468 | } | |
1469 | ||
1470 | tcp_ses->noblocksnd = volume_info->noblocksnd; | |
1471 | tcp_ses->noautotune = volume_info->noautotune; | |
1472 | atomic_set(&tcp_ses->inFlight, 0); | |
1473 | init_waitqueue_head(&tcp_ses->response_q); | |
1474 | init_waitqueue_head(&tcp_ses->request_q); | |
1475 | INIT_LIST_HEAD(&tcp_ses->pending_mid_q); | |
1476 | mutex_init(&tcp_ses->srv_mutex); | |
1477 | memcpy(tcp_ses->workstation_RFC1001_name, | |
1478 | volume_info->source_rfc1001_name, RFC1001_NAME_LEN_WITH_NULL); | |
1479 | memcpy(tcp_ses->server_RFC1001_name, | |
1480 | volume_info->target_rfc1001_name, RFC1001_NAME_LEN_WITH_NULL); | |
1481 | tcp_ses->sequence_number = 0; | |
1482 | INIT_LIST_HEAD(&tcp_ses->tcp_ses_list); | |
1483 | INIT_LIST_HEAD(&tcp_ses->smb_ses_list); | |
1484 | ||
1485 | /* | |
1486 | * at this point we are the only ones with the pointer | |
1487 | * to the struct since the kernel thread not created yet | |
1488 | * no need to spinlock this init of tcpStatus or srv_count | |
1489 | */ | |
1490 | tcp_ses->tcpStatus = CifsNew; | |
1491 | ++tcp_ses->srv_count; | |
1492 | ||
1493 | if (addr.sa_family == AF_INET6) { | |
1494 | cFYI(1, ("attempting ipv6 connect")); | |
1495 | /* BB should we allow ipv6 on port 139? */ | |
1496 | /* other OS never observed in Wild doing 139 with v6 */ | |
1497 | memcpy(&tcp_ses->addr.sockAddr6, sin_server6, | |
1498 | sizeof(struct sockaddr_in6)); | |
1499 | sin_server6->sin6_port = htons(volume_info->port); | |
d5c5605c | 1500 | rc = ipv6_connect(tcp_ses); |
63c038c2 JL |
1501 | } else { |
1502 | memcpy(&tcp_ses->addr.sockAddr, sin_server, | |
1503 | sizeof(struct sockaddr_in)); | |
1504 | sin_server->sin_port = htons(volume_info->port); | |
bcf4b106 | 1505 | rc = ipv4_connect(tcp_ses); |
63c038c2 JL |
1506 | } |
1507 | if (rc < 0) { | |
1508 | cERROR(1, ("Error connecting to socket. Aborting operation")); | |
1509 | goto out_err; | |
1510 | } | |
1511 | ||
1512 | /* | |
1513 | * since we're in a cifs function already, we know that | |
1514 | * this will succeed. No need for try_module_get(). | |
1515 | */ | |
1516 | __module_get(THIS_MODULE); | |
1517 | tcp_ses->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, | |
1518 | tcp_ses, "cifsd"); | |
1519 | if (IS_ERR(tcp_ses->tsk)) { | |
1520 | rc = PTR_ERR(tcp_ses->tsk); | |
1521 | cERROR(1, ("error %d create cifsd thread", rc)); | |
1522 | module_put(THIS_MODULE); | |
1523 | goto out_err; | |
1524 | } | |
1525 | ||
1526 | /* thread spawned, put it on the list */ | |
1527 | write_lock(&cifs_tcp_ses_lock); | |
1528 | list_add(&tcp_ses->tcp_ses_list, &cifs_tcp_ses_list); | |
1529 | write_unlock(&cifs_tcp_ses_lock); | |
1530 | ||
1531 | return tcp_ses; | |
1532 | ||
1533 | out_err: | |
1534 | if (tcp_ses) { | |
1535 | kfree(tcp_ses->hostname); | |
1536 | if (tcp_ses->ssocket) | |
1537 | sock_release(tcp_ses->ssocket); | |
1538 | kfree(tcp_ses); | |
1539 | } | |
1540 | return ERR_PTR(rc); | |
1541 | } | |
1542 | ||
14fbf50d JL |
1543 | static struct cifsSesInfo * |
1544 | cifs_find_smb_ses(struct TCP_Server_Info *server, char *username) | |
1545 | { | |
1546 | struct list_head *tmp; | |
1547 | struct cifsSesInfo *ses; | |
1548 | ||
1549 | write_lock(&cifs_tcp_ses_lock); | |
1550 | list_for_each(tmp, &server->smb_ses_list) { | |
1551 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); | |
1552 | if (strncmp(ses->userName, username, MAX_USERNAME_SIZE)) | |
1553 | continue; | |
1554 | ||
1555 | ++ses->ses_count; | |
1556 | write_unlock(&cifs_tcp_ses_lock); | |
1557 | return ses; | |
1558 | } | |
1559 | write_unlock(&cifs_tcp_ses_lock); | |
1560 | return NULL; | |
1561 | } | |
1562 | ||
1563 | static void | |
1564 | cifs_put_smb_ses(struct cifsSesInfo *ses) | |
1565 | { | |
1566 | int xid; | |
1567 | struct TCP_Server_Info *server = ses->server; | |
1568 | ||
1569 | write_lock(&cifs_tcp_ses_lock); | |
1570 | if (--ses->ses_count > 0) { | |
1571 | write_unlock(&cifs_tcp_ses_lock); | |
1572 | return; | |
1573 | } | |
1574 | ||
1575 | list_del_init(&ses->smb_ses_list); | |
1576 | write_unlock(&cifs_tcp_ses_lock); | |
1577 | ||
1578 | if (ses->status == CifsGood) { | |
1579 | xid = GetXid(); | |
1580 | CIFSSMBLogoff(xid, ses); | |
1581 | _FreeXid(xid); | |
1582 | } | |
1583 | sesInfoFree(ses); | |
1584 | cifs_put_tcp_session(server); | |
1585 | } | |
1586 | ||
f1987b44 JL |
1587 | static struct cifsTconInfo * |
1588 | cifs_find_tcon(struct cifsSesInfo *ses, const char *unc) | |
1589 | { | |
1590 | struct list_head *tmp; | |
1591 | struct cifsTconInfo *tcon; | |
1592 | ||
1593 | write_lock(&cifs_tcp_ses_lock); | |
1594 | list_for_each(tmp, &ses->tcon_list) { | |
1595 | tcon = list_entry(tmp, struct cifsTconInfo, tcon_list); | |
1596 | if (tcon->tidStatus == CifsExiting) | |
1597 | continue; | |
1598 | if (strncmp(tcon->treeName, unc, MAX_TREE_SIZE)) | |
1599 | continue; | |
1600 | ||
1601 | ++tcon->tc_count; | |
1602 | write_unlock(&cifs_tcp_ses_lock); | |
1603 | return tcon; | |
1604 | } | |
1605 | write_unlock(&cifs_tcp_ses_lock); | |
1606 | return NULL; | |
1607 | } | |
1608 | ||
1609 | static void | |
1610 | cifs_put_tcon(struct cifsTconInfo *tcon) | |
1611 | { | |
1612 | int xid; | |
1613 | struct cifsSesInfo *ses = tcon->ses; | |
1614 | ||
1615 | write_lock(&cifs_tcp_ses_lock); | |
1616 | if (--tcon->tc_count > 0) { | |
1617 | write_unlock(&cifs_tcp_ses_lock); | |
1618 | return; | |
1619 | } | |
1620 | ||
1621 | list_del_init(&tcon->tcon_list); | |
1622 | write_unlock(&cifs_tcp_ses_lock); | |
1623 | ||
1624 | xid = GetXid(); | |
1625 | CIFSSMBTDis(xid, tcon); | |
1626 | _FreeXid(xid); | |
1627 | ||
1628 | DeleteTconOplockQEntries(tcon); | |
1629 | tconInfoFree(tcon); | |
1630 | cifs_put_smb_ses(ses); | |
1631 | } | |
1632 | ||
1da177e4 | 1633 | int |
50c2f753 SF |
1634 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, |
1635 | const struct nls_table *nls_codepage, unsigned int *pnum_referrals, | |
366781c1 | 1636 | struct dfs_info3_param **preferrals, int remap) |
1da177e4 LT |
1637 | { |
1638 | char *temp_unc; | |
1639 | int rc = 0; | |
1640 | ||
1641 | *pnum_referrals = 0; | |
366781c1 | 1642 | *preferrals = NULL; |
1da177e4 LT |
1643 | |
1644 | if (pSesInfo->ipc_tid == 0) { | |
1645 | temp_unc = kmalloc(2 /* for slashes */ + | |
50c2f753 SF |
1646 | strnlen(pSesInfo->serverName, |
1647 | SERVER_NAME_LEN_WITH_NULL * 2) | |
1da177e4 LT |
1648 | + 1 + 4 /* slash IPC$ */ + 2, |
1649 | GFP_KERNEL); | |
1650 | if (temp_unc == NULL) | |
1651 | return -ENOMEM; | |
1652 | temp_unc[0] = '\\'; | |
1653 | temp_unc[1] = '\\'; | |
1654 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1655 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1656 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1657 | cFYI(1, | |
50c2f753 | 1658 | ("CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid)); |
1da177e4 LT |
1659 | kfree(temp_unc); |
1660 | } | |
1661 | if (rc == 0) | |
c2cf07d5 | 1662 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, |
737b758c | 1663 | pnum_referrals, nls_codepage, remap); |
366781c1 SF |
1664 | /* BB map targetUNCs to dfs_info3 structures, here or |
1665 | in CIFSGetDFSRefer BB */ | |
1da177e4 LT |
1666 | |
1667 | return rc; | |
1668 | } | |
1669 | ||
09e50d55 JL |
1670 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
1671 | static struct lock_class_key cifs_key[2]; | |
1672 | static struct lock_class_key cifs_slock_key[2]; | |
1673 | ||
1674 | static inline void | |
1675 | cifs_reclassify_socket4(struct socket *sock) | |
1676 | { | |
1677 | struct sock *sk = sock->sk; | |
1678 | BUG_ON(sock_owned_by_user(sk)); | |
1679 | sock_lock_init_class_and_name(sk, "slock-AF_INET-CIFS", | |
1680 | &cifs_slock_key[0], "sk_lock-AF_INET-CIFS", &cifs_key[0]); | |
1681 | } | |
1682 | ||
1683 | static inline void | |
1684 | cifs_reclassify_socket6(struct socket *sock) | |
1685 | { | |
1686 | struct sock *sk = sock->sk; | |
1687 | BUG_ON(sock_owned_by_user(sk)); | |
1688 | sock_lock_init_class_and_name(sk, "slock-AF_INET6-CIFS", | |
1689 | &cifs_slock_key[1], "sk_lock-AF_INET6-CIFS", &cifs_key[1]); | |
1690 | } | |
1691 | #else | |
1692 | static inline void | |
1693 | cifs_reclassify_socket4(struct socket *sock) | |
1694 | { | |
1695 | } | |
1696 | ||
1697 | static inline void | |
1698 | cifs_reclassify_socket6(struct socket *sock) | |
1699 | { | |
1700 | } | |
1701 | #endif | |
1702 | ||
1da177e4 | 1703 | /* See RFC1001 section 14 on representation of Netbios names */ |
50c2f753 | 1704 | static void rfc1002mangle(char *target, char *source, unsigned int length) |
1da177e4 | 1705 | { |
50c2f753 | 1706 | unsigned int i, j; |
1da177e4 | 1707 | |
50c2f753 | 1708 | for (i = 0, j = 0; i < (length); i++) { |
1da177e4 LT |
1709 | /* mask a nibble at a time and encode */ |
1710 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1711 | target[j+1] = 'A' + (0x0F & source[i]); | |
50c2f753 | 1712 | j += 2; |
1da177e4 LT |
1713 | } |
1714 | ||
1715 | } | |
1716 | ||
1717 | ||
1718 | static int | |
bcf4b106 | 1719 | ipv4_connect(struct TCP_Server_Info *server) |
1da177e4 LT |
1720 | { |
1721 | int rc = 0; | |
bcf4b106 | 1722 | bool connected = false; |
1da177e4 | 1723 | __be16 orig_port = 0; |
bcf4b106 | 1724 | struct socket *socket = server->ssocket; |
1da177e4 | 1725 | |
bcf4b106 | 1726 | if (socket == NULL) { |
50c2f753 | 1727 | rc = sock_create_kern(PF_INET, SOCK_STREAM, |
bcf4b106 | 1728 | IPPROTO_TCP, &socket); |
1da177e4 | 1729 | if (rc < 0) { |
50c2f753 | 1730 | cERROR(1, ("Error %d creating socket", rc)); |
1da177e4 | 1731 | return rc; |
1da177e4 | 1732 | } |
bcf4b106 JL |
1733 | |
1734 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1735 | cFYI(1, ("Socket created")); | |
1736 | server->ssocket = socket; | |
1737 | socket->sk->sk_allocation = GFP_NOFS; | |
1738 | cifs_reclassify_socket4(socket); | |
1da177e4 LT |
1739 | } |
1740 | ||
bcf4b106 JL |
1741 | /* user overrode default port */ |
1742 | if (server->addr.sockAddr.sin_port) { | |
1743 | rc = socket->ops->connect(socket, (struct sockaddr *) | |
1744 | &server->addr.sockAddr, | |
1745 | sizeof(struct sockaddr_in), 0); | |
1da177e4 | 1746 | if (rc >= 0) |
bcf4b106 | 1747 | connected = true; |
50c2f753 | 1748 | } |
1da177e4 | 1749 | |
fb8c4b14 | 1750 | if (!connected) { |
50c2f753 | 1751 | /* save original port so we can retry user specified port |
1da177e4 | 1752 | later if fall back ports fail this time */ |
bcf4b106 | 1753 | orig_port = server->addr.sockAddr.sin_port; |
1da177e4 LT |
1754 | |
1755 | /* do not retry on the same port we just failed on */ | |
bcf4b106 JL |
1756 | if (server->addr.sockAddr.sin_port != htons(CIFS_PORT)) { |
1757 | server->addr.sockAddr.sin_port = htons(CIFS_PORT); | |
1758 | rc = socket->ops->connect(socket, | |
1759 | (struct sockaddr *) | |
1760 | &server->addr.sockAddr, | |
1761 | sizeof(struct sockaddr_in), 0); | |
1da177e4 | 1762 | if (rc >= 0) |
bcf4b106 | 1763 | connected = true; |
1da177e4 LT |
1764 | } |
1765 | } | |
1766 | if (!connected) { | |
bcf4b106 JL |
1767 | server->addr.sockAddr.sin_port = htons(RFC1001_PORT); |
1768 | rc = socket->ops->connect(socket, (struct sockaddr *) | |
1769 | &server->addr.sockAddr, | |
6345a3a8 | 1770 | sizeof(struct sockaddr_in), 0); |
50c2f753 | 1771 | if (rc >= 0) |
bcf4b106 | 1772 | connected = true; |
1da177e4 LT |
1773 | } |
1774 | ||
1775 | /* give up here - unless we want to retry on different | |
1776 | protocol families some day */ | |
1777 | if (!connected) { | |
fb8c4b14 | 1778 | if (orig_port) |
bcf4b106 | 1779 | server->addr.sockAddr.sin_port = orig_port; |
50c2f753 | 1780 | cFYI(1, ("Error %d connecting to server via ipv4", rc)); |
bcf4b106 JL |
1781 | sock_release(socket); |
1782 | server->ssocket = NULL; | |
1da177e4 LT |
1783 | return rc; |
1784 | } | |
bcf4b106 JL |
1785 | |
1786 | ||
1787 | /* | |
1788 | * Eventually check for other socket options to change from | |
1789 | * the default. sock_setsockopt not used because it expects | |
1790 | * user space buffer | |
1791 | */ | |
1792 | socket->sk->sk_rcvtimeo = 7 * HZ; | |
1793 | socket->sk->sk_sndtimeo = 3 * HZ; | |
edf1ae40 | 1794 | |
b387eaeb | 1795 | /* make the bufsizes depend on wsize/rsize and max requests */ |
bcf4b106 JL |
1796 | if (server->noautotune) { |
1797 | if (socket->sk->sk_sndbuf < (200 * 1024)) | |
1798 | socket->sk->sk_sndbuf = 200 * 1024; | |
1799 | if (socket->sk->sk_rcvbuf < (140 * 1024)) | |
1800 | socket->sk->sk_rcvbuf = 140 * 1024; | |
edf1ae40 | 1801 | } |
1da177e4 | 1802 | |
bcf4b106 JL |
1803 | cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", |
1804 | socket->sk->sk_sndbuf, | |
1805 | socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo)); | |
1806 | ||
1da177e4 | 1807 | /* send RFC1001 sessinit */ |
bcf4b106 | 1808 | if (server->addr.sockAddr.sin_port == htons(RFC1001_PORT)) { |
1da177e4 | 1809 | /* some servers require RFC1001 sessinit before sending |
50c2f753 | 1810 | negprot - BB check reconnection in case where second |
1da177e4 | 1811 | sessinit is sent but no second negprot */ |
50c2f753 SF |
1812 | struct rfc1002_session_packet *ses_init_buf; |
1813 | struct smb_hdr *smb_buf; | |
1814 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), | |
1815 | GFP_KERNEL); | |
fb8c4b14 | 1816 | if (ses_init_buf) { |
1da177e4 | 1817 | ses_init_buf->trailer.session_req.called_len = 32; |
bcf4b106 JL |
1818 | if (server->server_RFC1001_name && |
1819 | server->server_RFC1001_name[0] != 0) | |
8ecaf67a JL |
1820 | rfc1002mangle(ses_init_buf->trailer. |
1821 | session_req.called_name, | |
bcf4b106 | 1822 | server->server_RFC1001_name, |
8ecaf67a | 1823 | RFC1001_NAME_LEN_WITH_NULL); |
bcf4b106 | 1824 | else |
8ecaf67a JL |
1825 | rfc1002mangle(ses_init_buf->trailer. |
1826 | session_req.called_name, | |
1827 | DEFAULT_CIFS_CALLED_NAME, | |
1828 | RFC1001_NAME_LEN_WITH_NULL); | |
a10faeb2 | 1829 | |
1da177e4 | 1830 | ses_init_buf->trailer.session_req.calling_len = 32; |
bcf4b106 | 1831 | |
1da177e4 LT |
1832 | /* calling name ends in null (byte 16) from old smb |
1833 | convention. */ | |
bcf4b106 JL |
1834 | if (server->workstation_RFC1001_name && |
1835 | server->workstation_RFC1001_name[0] != 0) | |
8ecaf67a JL |
1836 | rfc1002mangle(ses_init_buf->trailer. |
1837 | session_req.calling_name, | |
bcf4b106 | 1838 | server->workstation_RFC1001_name, |
8ecaf67a | 1839 | RFC1001_NAME_LEN_WITH_NULL); |
bcf4b106 | 1840 | else |
8ecaf67a JL |
1841 | rfc1002mangle(ses_init_buf->trailer. |
1842 | session_req.calling_name, | |
1843 | "LINUX_CIFS_CLNT", | |
1844 | RFC1001_NAME_LEN_WITH_NULL); | |
bcf4b106 | 1845 | |
1da177e4 LT |
1846 | ses_init_buf->trailer.session_req.scope1 = 0; |
1847 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1848 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1849 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1850 | smb_buf->smb_buf_length = 0x81000044; | |
bcf4b106 JL |
1851 | rc = smb_send(socket, smb_buf, 0x44, |
1852 | (struct sockaddr *) &server->addr.sockAddr, | |
1853 | server->noblocksnd); | |
1da177e4 | 1854 | kfree(ses_init_buf); |
50c2f753 | 1855 | msleep(1); /* RFC1001 layer in at least one server |
083d3a2c SF |
1856 | requires very short break before negprot |
1857 | presumably because not expecting negprot | |
1858 | to follow so fast. This is a simple | |
50c2f753 | 1859 | solution that works without |
083d3a2c SF |
1860 | complicating the code and causes no |
1861 | significant slowing down on mount | |
1862 | for everyone else */ | |
1da177e4 | 1863 | } |
50c2f753 | 1864 | /* else the negprot may still work without this |
1da177e4 | 1865 | even though malloc failed */ |
50c2f753 | 1866 | |
1da177e4 | 1867 | } |
50c2f753 | 1868 | |
1da177e4 LT |
1869 | return rc; |
1870 | } | |
1871 | ||
1872 | static int | |
d5c5605c | 1873 | ipv6_connect(struct TCP_Server_Info *server) |
1da177e4 LT |
1874 | { |
1875 | int rc = 0; | |
d5c5605c | 1876 | bool connected = false; |
1da177e4 | 1877 | __be16 orig_port = 0; |
d5c5605c | 1878 | struct socket *socket = server->ssocket; |
1da177e4 | 1879 | |
d5c5605c | 1880 | if (socket == NULL) { |
50c2f753 | 1881 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, |
d5c5605c | 1882 | IPPROTO_TCP, &socket); |
1da177e4 | 1883 | if (rc < 0) { |
50c2f753 | 1884 | cERROR(1, ("Error %d creating ipv6 socket", rc)); |
d5c5605c | 1885 | socket = NULL; |
1da177e4 | 1886 | return rc; |
1da177e4 | 1887 | } |
1da177e4 | 1888 | |
d5c5605c JL |
1889 | /* BB other socket options to set KEEPALIVE, NODELAY? */ |
1890 | cFYI(1, ("ipv6 Socket created")); | |
1891 | server->ssocket = socket; | |
1892 | socket->sk->sk_allocation = GFP_NOFS; | |
1893 | cifs_reclassify_socket6(socket); | |
1894 | } | |
1da177e4 | 1895 | |
d5c5605c JL |
1896 | /* user overrode default port */ |
1897 | if (server->addr.sockAddr6.sin6_port) { | |
1898 | rc = socket->ops->connect(socket, | |
1899 | (struct sockaddr *) &server->addr.sockAddr6, | |
6345a3a8 | 1900 | sizeof(struct sockaddr_in6), 0); |
1da177e4 | 1901 | if (rc >= 0) |
d5c5605c | 1902 | connected = true; |
50c2f753 | 1903 | } |
1da177e4 | 1904 | |
fb8c4b14 | 1905 | if (!connected) { |
50c2f753 | 1906 | /* save original port so we can retry user specified port |
1da177e4 LT |
1907 | later if fall back ports fail this time */ |
1908 | ||
d5c5605c | 1909 | orig_port = server->addr.sockAddr6.sin6_port; |
1da177e4 | 1910 | /* do not retry on the same port we just failed on */ |
d5c5605c JL |
1911 | if (server->addr.sockAddr6.sin6_port != htons(CIFS_PORT)) { |
1912 | server->addr.sockAddr6.sin6_port = htons(CIFS_PORT); | |
1913 | rc = socket->ops->connect(socket, (struct sockaddr *) | |
1914 | &server->addr.sockAddr6, | |
6345a3a8 | 1915 | sizeof(struct sockaddr_in6), 0); |
1da177e4 | 1916 | if (rc >= 0) |
d5c5605c | 1917 | connected = true; |
1da177e4 LT |
1918 | } |
1919 | } | |
1920 | if (!connected) { | |
d5c5605c JL |
1921 | server->addr.sockAddr6.sin6_port = htons(RFC1001_PORT); |
1922 | rc = socket->ops->connect(socket, (struct sockaddr *) | |
1923 | &server->addr.sockAddr6, | |
1924 | sizeof(struct sockaddr_in6), 0); | |
50c2f753 | 1925 | if (rc >= 0) |
d5c5605c | 1926 | connected = true; |
1da177e4 LT |
1927 | } |
1928 | ||
1929 | /* give up here - unless we want to retry on different | |
1930 | protocol families some day */ | |
1931 | if (!connected) { | |
fb8c4b14 | 1932 | if (orig_port) |
d5c5605c | 1933 | server->addr.sockAddr6.sin6_port = orig_port; |
50c2f753 | 1934 | cFYI(1, ("Error %d connecting to server via ipv6", rc)); |
d5c5605c JL |
1935 | sock_release(socket); |
1936 | server->ssocket = NULL; | |
1da177e4 LT |
1937 | return rc; |
1938 | } | |
edf1ae40 | 1939 | |
d5c5605c JL |
1940 | /* |
1941 | * Eventually check for other socket options to change from | |
1942 | * the default. sock_setsockopt not used because it expects | |
1943 | * user space buffer | |
1944 | */ | |
1945 | socket->sk->sk_rcvtimeo = 7 * HZ; | |
1946 | socket->sk->sk_sndtimeo = 3 * HZ; | |
1947 | server->ssocket = socket; | |
50c2f753 | 1948 | |
1da177e4 LT |
1949 | return rc; |
1950 | } | |
1951 | ||
50c2f753 SF |
1952 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon, |
1953 | struct super_block *sb, struct smb_vol *vol_info) | |
8af18971 SF |
1954 | { |
1955 | /* if we are reconnecting then should we check to see if | |
1956 | * any requested capabilities changed locally e.g. via | |
1957 | * remount but we can not do much about it here | |
1958 | * if they have (even if we could detect it by the following) | |
1959 | * Perhaps we could add a backpointer to array of sb from tcon | |
1960 | * or if we change to make all sb to same share the same | |
1961 | * sb as NFS - then we only have one backpointer to sb. | |
1962 | * What if we wanted to mount the server share twice once with | |
1963 | * and once without posixacls or posix paths? */ | |
1964 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
50c2f753 | 1965 | |
c18c842b SF |
1966 | if (vol_info && vol_info->no_linux_ext) { |
1967 | tcon->fsUnixInfo.Capability = 0; | |
1968 | tcon->unix_ext = 0; /* Unix Extensions disabled */ | |
1969 | cFYI(1, ("Linux protocol extensions disabled")); | |
1970 | return; | |
1971 | } else if (vol_info) | |
1972 | tcon->unix_ext = 1; /* Unix Extensions supported */ | |
1973 | ||
1974 | if (tcon->unix_ext == 0) { | |
1975 | cFYI(1, ("Unix extensions disabled so not set on reconnect")); | |
1976 | return; | |
1977 | } | |
50c2f753 | 1978 | |
fb8c4b14 | 1979 | if (!CIFSSMBQFSUnixInfo(xid, tcon)) { |
8af18971 | 1980 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
50c2f753 | 1981 | |
8af18971 SF |
1982 | /* check for reconnect case in which we do not |
1983 | want to change the mount behavior if we can avoid it */ | |
fb8c4b14 | 1984 | if (vol_info == NULL) { |
50c2f753 | 1985 | /* turn off POSIX ACL and PATHNAMES if not set |
8af18971 SF |
1986 | originally at mount time */ |
1987 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) | |
1988 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
11b6d645 IM |
1989 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1990 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) | |
1991 | cERROR(1, ("POSIXPATH support change")); | |
8af18971 | 1992 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
11b6d645 IM |
1993 | } else if ((cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1994 | cERROR(1, ("possible reconnect error")); | |
1995 | cERROR(1, | |
1996 | ("server disabled POSIX path support")); | |
1997 | } | |
8af18971 | 1998 | } |
50c2f753 | 1999 | |
8af18971 | 2000 | cap &= CIFS_UNIX_CAP_MASK; |
75865f8c | 2001 | if (vol_info && vol_info->no_psx_acl) |
8af18971 | 2002 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
75865f8c | 2003 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
fb8c4b14 SF |
2004 | cFYI(1, ("negotiated posix acl support")); |
2005 | if (sb) | |
8af18971 SF |
2006 | sb->s_flags |= MS_POSIXACL; |
2007 | } | |
2008 | ||
75865f8c | 2009 | if (vol_info && vol_info->posix_paths == 0) |
8af18971 | 2010 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
75865f8c | 2011 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
fb8c4b14 | 2012 | cFYI(1, ("negotiate posix pathnames")); |
75865f8c | 2013 | if (sb) |
50c2f753 | 2014 | CIFS_SB(sb)->mnt_cifs_flags |= |
8af18971 SF |
2015 | CIFS_MOUNT_POSIX_PATHS; |
2016 | } | |
50c2f753 | 2017 | |
984acfe1 SF |
2018 | /* We might be setting the path sep back to a different |
2019 | form if we are reconnecting and the server switched its | |
50c2f753 | 2020 | posix path capability for this share */ |
75865f8c | 2021 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
984acfe1 | 2022 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
75865f8c SF |
2023 | |
2024 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { | |
2025 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { | |
2026 | CIFS_SB(sb)->rsize = 127 * 1024; | |
90c81e0b SF |
2027 | cFYI(DBG2, |
2028 | ("larger reads not supported by srv")); | |
75865f8c SF |
2029 | } |
2030 | } | |
50c2f753 SF |
2031 | |
2032 | ||
2033 | cFYI(1, ("Negotiate caps 0x%x", (int)cap)); | |
8af18971 | 2034 | #ifdef CONFIG_CIFS_DEBUG2 |
75865f8c | 2035 | if (cap & CIFS_UNIX_FCNTL_CAP) |
fb8c4b14 | 2036 | cFYI(1, ("FCNTL cap")); |
75865f8c | 2037 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
fb8c4b14 | 2038 | cFYI(1, ("EXTATTR cap")); |
75865f8c | 2039 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
fb8c4b14 | 2040 | cFYI(1, ("POSIX path cap")); |
75865f8c | 2041 | if (cap & CIFS_UNIX_XATTR_CAP) |
fb8c4b14 | 2042 | cFYI(1, ("XATTR cap")); |
75865f8c | 2043 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
fb8c4b14 | 2044 | cFYI(1, ("POSIX ACL cap")); |
75865f8c | 2045 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
fb8c4b14 | 2046 | cFYI(1, ("very large read cap")); |
75865f8c | 2047 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) |
fb8c4b14 | 2048 | cFYI(1, ("very large write cap")); |
8af18971 SF |
2049 | #endif /* CIFS_DEBUG2 */ |
2050 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
442aa310 | 2051 | if (vol_info == NULL) { |
5a44b319 | 2052 | cFYI(1, ("resetting capabilities failed")); |
442aa310 | 2053 | } else |
5a44b319 SF |
2054 | cERROR(1, ("Negotiating Unix capabilities " |
2055 | "with the server failed. Consider " | |
2056 | "mounting with the Unix Extensions\n" | |
2057 | "disabled, if problems are found, " | |
2058 | "by specifying the nounix mount " | |
2224f4e5 | 2059 | "option.")); |
5a44b319 | 2060 | |
8af18971 SF |
2061 | } |
2062 | } | |
2063 | } | |
2064 | ||
03a143c9 SF |
2065 | static void |
2066 | convert_delimiter(char *path, char delim) | |
2067 | { | |
2068 | int i; | |
c2d68ea6 | 2069 | char old_delim; |
03a143c9 SF |
2070 | |
2071 | if (path == NULL) | |
2072 | return; | |
2073 | ||
582d21e5 | 2074 | if (delim == '/') |
c2d68ea6 SF |
2075 | old_delim = '\\'; |
2076 | else | |
2077 | old_delim = '/'; | |
2078 | ||
03a143c9 | 2079 | for (i = 0; path[i] != '\0'; i++) { |
c2d68ea6 | 2080 | if (path[i] == old_delim) |
03a143c9 SF |
2081 | path[i] = delim; |
2082 | } | |
2083 | } | |
2084 | ||
3b795210 SF |
2085 | static void setup_cifs_sb(struct smb_vol *pvolume_info, |
2086 | struct cifs_sb_info *cifs_sb) | |
2087 | { | |
2088 | if (pvolume_info->rsize > CIFSMaxBufSize) { | |
2089 | cERROR(1, ("rsize %d too large, using MaxBufSize", | |
2090 | pvolume_info->rsize)); | |
2091 | cifs_sb->rsize = CIFSMaxBufSize; | |
2092 | } else if ((pvolume_info->rsize) && | |
2093 | (pvolume_info->rsize <= CIFSMaxBufSize)) | |
2094 | cifs_sb->rsize = pvolume_info->rsize; | |
2095 | else /* default */ | |
2096 | cifs_sb->rsize = CIFSMaxBufSize; | |
2097 | ||
2098 | if (pvolume_info->wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { | |
2099 | cERROR(1, ("wsize %d too large, using 4096 instead", | |
2100 | pvolume_info->wsize)); | |
2101 | cifs_sb->wsize = 4096; | |
2102 | } else if (pvolume_info->wsize) | |
2103 | cifs_sb->wsize = pvolume_info->wsize; | |
2104 | else | |
2105 | cifs_sb->wsize = min_t(const int, | |
2106 | PAGEVEC_SIZE * PAGE_CACHE_SIZE, | |
2107 | 127*1024); | |
2108 | /* old default of CIFSMaxBufSize was too small now | |
2109 | that SMB Write2 can send multiple pages in kvec. | |
2110 | RFC1001 does not describe what happens when frame | |
2111 | bigger than 128K is sent so use that as max in | |
2112 | conjunction with 52K kvec constraint on arch with 4K | |
2113 | page size */ | |
2114 | ||
2115 | if (cifs_sb->rsize < 2048) { | |
2116 | cifs_sb->rsize = 2048; | |
2117 | /* Windows ME may prefer this */ | |
2118 | cFYI(1, ("readsize set to minimum: 2048")); | |
2119 | } | |
2120 | /* calculate prepath */ | |
2121 | cifs_sb->prepath = pvolume_info->prepath; | |
2122 | if (cifs_sb->prepath) { | |
2123 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); | |
2124 | /* we can not convert the / to \ in the path | |
2125 | separators in the prefixpath yet because we do not | |
2126 | know (until reset_cifs_unix_caps is called later) | |
2127 | whether POSIX PATH CAP is available. We normalize | |
2128 | the / to \ after reset_cifs_unix_caps is called */ | |
2129 | pvolume_info->prepath = NULL; | |
2130 | } else | |
2131 | cifs_sb->prepathlen = 0; | |
2132 | cifs_sb->mnt_uid = pvolume_info->linux_uid; | |
2133 | cifs_sb->mnt_gid = pvolume_info->linux_gid; | |
2134 | cifs_sb->mnt_file_mode = pvolume_info->file_mode; | |
2135 | cifs_sb->mnt_dir_mode = pvolume_info->dir_mode; | |
2136 | cFYI(1, ("file mode: 0x%x dir mode: 0x%x", | |
2137 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode)); | |
2138 | ||
2139 | if (pvolume_info->noperm) | |
2140 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; | |
2141 | if (pvolume_info->setuids) | |
2142 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; | |
2143 | if (pvolume_info->server_ino) | |
2144 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; | |
2145 | if (pvolume_info->remap) | |
2146 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; | |
2147 | if (pvolume_info->no_xattr) | |
2148 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; | |
2149 | if (pvolume_info->sfu_emul) | |
2150 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; | |
2151 | if (pvolume_info->nobrl) | |
2152 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; | |
2153 | if (pvolume_info->cifs_acl) | |
2154 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; | |
2155 | if (pvolume_info->override_uid) | |
2156 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; | |
2157 | if (pvolume_info->override_gid) | |
2158 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; | |
2159 | if (pvolume_info->dynperm) | |
2160 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM; | |
2161 | if (pvolume_info->direct_io) { | |
2162 | cFYI(1, ("mounting share using direct i/o")); | |
2163 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; | |
2164 | } | |
2165 | ||
2166 | if ((pvolume_info->cifs_acl) && (pvolume_info->dynperm)) | |
2167 | cERROR(1, ("mount option dynperm ignored if cifsacl " | |
2168 | "mount option supported")); | |
2169 | } | |
2170 | ||
1da177e4 LT |
2171 | int |
2172 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
2173 | char *mount_data, const char *devname) | |
2174 | { | |
2175 | int rc = 0; | |
2176 | int xid; | |
7586b765 | 2177 | struct smb_vol *volume_info; |
1da177e4 | 2178 | struct cifsSesInfo *pSesInfo = NULL; |
1da177e4 LT |
2179 | struct cifsTconInfo *tcon = NULL; |
2180 | struct TCP_Server_Info *srvTcp = NULL; | |
2181 | ||
2182 | xid = GetXid(); | |
2183 | ||
7586b765 JL |
2184 | volume_info = kzalloc(sizeof(struct smb_vol), GFP_KERNEL); |
2185 | if (!volume_info) { | |
2186 | rc = -ENOMEM; | |
2187 | goto out; | |
2188 | } | |
50c2f753 | 2189 | |
7586b765 | 2190 | if (cifs_parse_mount_options(mount_data, devname, volume_info)) { |
70fe7dc0 JL |
2191 | rc = -EINVAL; |
2192 | goto out; | |
1da177e4 LT |
2193 | } |
2194 | ||
7586b765 | 2195 | if (volume_info->nullauth) { |
fb8c4b14 | 2196 | cFYI(1, ("null user")); |
7586b765 JL |
2197 | volume_info->username = ""; |
2198 | } else if (volume_info->username) { | |
1da177e4 | 2199 | /* BB fixme parse for domain name here */ |
7586b765 | 2200 | cFYI(1, ("Username: %s", volume_info->username)); |
1da177e4 | 2201 | } else { |
bf820679 | 2202 | cifserror("No username specified"); |
50c2f753 SF |
2203 | /* In userspace mount helper we can get user name from alternate |
2204 | locations such as env variables and files on disk */ | |
70fe7dc0 JL |
2205 | rc = -EINVAL; |
2206 | goto out; | |
1da177e4 LT |
2207 | } |
2208 | ||
1da177e4 LT |
2209 | |
2210 | /* this is needed for ASCII cp to Unicode converts */ | |
7586b765 | 2211 | if (volume_info->iocharset == NULL) { |
1da177e4 LT |
2212 | cifs_sb->local_nls = load_nls_default(); |
2213 | /* load_nls_default can not return null */ | |
2214 | } else { | |
7586b765 | 2215 | cifs_sb->local_nls = load_nls(volume_info->iocharset); |
fb8c4b14 | 2216 | if (cifs_sb->local_nls == NULL) { |
50c2f753 | 2217 | cERROR(1, ("CIFS mount error: iocharset %s not found", |
7586b765 | 2218 | volume_info->iocharset)); |
70fe7dc0 JL |
2219 | rc = -ELIBACC; |
2220 | goto out; | |
1da177e4 LT |
2221 | } |
2222 | } | |
2223 | ||
63c038c2 | 2224 | /* get a reference to a tcp session */ |
7586b765 | 2225 | srvTcp = cifs_get_tcp_session(volume_info); |
63c038c2 JL |
2226 | if (IS_ERR(srvTcp)) { |
2227 | rc = PTR_ERR(srvTcp); | |
2228 | goto out; | |
1da177e4 LT |
2229 | } |
2230 | ||
7586b765 | 2231 | pSesInfo = cifs_find_smb_ses(srvTcp, volume_info->username); |
14fbf50d | 2232 | if (pSesInfo) { |
1d9a8852 JL |
2233 | cFYI(1, ("Existing smb sess found (status=%d)", |
2234 | pSesInfo->status)); | |
14fbf50d JL |
2235 | /* |
2236 | * The existing SMB session already has a reference to srvTcp, | |
2237 | * so we can put back the extra one we got before | |
2238 | */ | |
2239 | cifs_put_tcp_session(srvTcp); | |
2240 | ||
88e7d705 | 2241 | down(&pSesInfo->sesSem); |
3b795210 | 2242 | if (pSesInfo->need_reconnect) { |
1d9a8852 | 2243 | cFYI(1, ("Session needs reconnect")); |
1d9a8852 JL |
2244 | rc = cifs_setup_session(xid, pSesInfo, |
2245 | cifs_sb->local_nls); | |
1d9a8852 | 2246 | } |
88e7d705 | 2247 | up(&pSesInfo->sesSem); |
1da177e4 | 2248 | } else if (!rc) { |
bf820679 | 2249 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 | 2250 | pSesInfo = sesInfoAlloc(); |
14fbf50d | 2251 | if (pSesInfo == NULL) { |
1da177e4 | 2252 | rc = -ENOMEM; |
14fbf50d | 2253 | goto mount_fail_check; |
1da177e4 LT |
2254 | } |
2255 | ||
14fbf50d JL |
2256 | /* new SMB session uses our srvTcp ref */ |
2257 | pSesInfo->server = srvTcp; | |
63c038c2 | 2258 | if (srvTcp->addr.sockAddr6.sin6_family == AF_INET6) |
8ecaf67a | 2259 | sprintf(pSesInfo->serverName, NIP6_FMT, |
63c038c2 | 2260 | NIP6(srvTcp->addr.sockAddr6.sin6_addr)); |
8ecaf67a JL |
2261 | else |
2262 | sprintf(pSesInfo->serverName, NIPQUAD_FMT, | |
63c038c2 | 2263 | NIPQUAD(srvTcp->addr.sockAddr.sin_addr.s_addr)); |
14fbf50d JL |
2264 | |
2265 | write_lock(&cifs_tcp_ses_lock); | |
2266 | list_add(&pSesInfo->smb_ses_list, &srvTcp->smb_ses_list); | |
2267 | write_unlock(&cifs_tcp_ses_lock); | |
2268 | ||
7586b765 JL |
2269 | /* volume_info->password freed at unmount */ |
2270 | if (volume_info->password) { | |
2271 | pSesInfo->password = volume_info->password; | |
14fbf50d | 2272 | /* set to NULL to prevent freeing on exit */ |
7586b765 | 2273 | volume_info->password = NULL; |
14fbf50d | 2274 | } |
7586b765 JL |
2275 | if (volume_info->username) |
2276 | strncpy(pSesInfo->userName, volume_info->username, | |
14fbf50d | 2277 | MAX_USERNAME_SIZE); |
7586b765 JL |
2278 | if (volume_info->domainname) { |
2279 | int len = strlen(volume_info->domainname); | |
14fbf50d JL |
2280 | pSesInfo->domainName = kmalloc(len + 1, GFP_KERNEL); |
2281 | if (pSesInfo->domainName) | |
2282 | strcpy(pSesInfo->domainName, | |
7586b765 | 2283 | volume_info->domainname); |
70fe7dc0 | 2284 | } |
7586b765 JL |
2285 | pSesInfo->linux_uid = volume_info->linux_uid; |
2286 | pSesInfo->overrideSecFlg = volume_info->secFlg; | |
14fbf50d JL |
2287 | down(&pSesInfo->sesSem); |
2288 | ||
2289 | /* BB FIXME need to pass vol->secFlgs BB */ | |
2290 | rc = cifs_setup_session(xid, pSesInfo, | |
2291 | cifs_sb->local_nls); | |
2292 | up(&pSesInfo->sesSem); | |
1da177e4 | 2293 | } |
50c2f753 | 2294 | |
1da177e4 LT |
2295 | /* search for existing tcon to this server share */ |
2296 | if (!rc) { | |
7586b765 | 2297 | setup_cifs_sb(volume_info, cifs_sb); |
27adb44c | 2298 | |
7586b765 | 2299 | tcon = cifs_find_tcon(pSesInfo, volume_info->UNC); |
1da177e4 | 2300 | if (tcon) { |
bf820679 | 2301 | cFYI(1, ("Found match on UNC path")); |
f1987b44 JL |
2302 | /* existing tcon already has a reference */ |
2303 | cifs_put_smb_ses(pSesInfo); | |
7586b765 | 2304 | if (tcon->seal != volume_info->seal) |
ab3f9929 SF |
2305 | cERROR(1, ("transport encryption setting " |
2306 | "conflicts with existing tid")); | |
1da177e4 LT |
2307 | } else { |
2308 | tcon = tconInfoAlloc(); | |
3b795210 | 2309 | if (tcon == NULL) { |
1da177e4 | 2310 | rc = -ENOMEM; |
3b795210 SF |
2311 | goto mount_fail_check; |
2312 | } | |
ab3f9929 | 2313 | tcon->ses = pSesInfo; |
3b795210 SF |
2314 | |
2315 | /* check for null share name ie connect to dfs root */ | |
7586b765 JL |
2316 | if ((strchr(volume_info->UNC + 3, '\\') == NULL) |
2317 | && (strchr(volume_info->UNC + 3, '/') == NULL)) { | |
3b795210 SF |
2318 | /* rc = connect_to_dfs_path(...) */ |
2319 | cFYI(1, ("DFS root not supported")); | |
2320 | rc = -ENODEV; | |
2321 | goto mount_fail_check; | |
2322 | } else { | |
2323 | /* BB Do we need to wrap sesSem around | |
2324 | * this TCon call and Unix SetFS as | |
2325 | * we do on SessSetup and reconnect? */ | |
7586b765 | 2326 | rc = CIFSTCon(xid, pSesInfo, volume_info->UNC, |
3b795210 SF |
2327 | tcon, cifs_sb->local_nls); |
2328 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
7586b765 | 2329 | if (volume_info->nodfs) { |
3b795210 SF |
2330 | tcon->Flags &= ~SMB_SHARE_IS_IN_DFS; |
2331 | cFYI(1, ("DFS disabled (%d)", | |
2332 | tcon->Flags)); | |
1da177e4 LT |
2333 | } |
2334 | } | |
14fbf50d | 2335 | if (rc) |
3b795210 | 2336 | goto mount_fail_check; |
7586b765 | 2337 | tcon->seal = volume_info->seal; |
f1987b44 JL |
2338 | write_lock(&cifs_tcp_ses_lock); |
2339 | list_add(&tcon->tcon_list, &pSesInfo->tcon_list); | |
2340 | write_unlock(&cifs_tcp_ses_lock); | |
1da177e4 | 2341 | } |
3b795210 SF |
2342 | |
2343 | /* we can have only one retry value for a connection | |
2344 | to a share so for resources mounted more than once | |
2345 | to the same server share the last value passed in | |
2346 | for the retry flag is used */ | |
7586b765 JL |
2347 | tcon->retry = volume_info->retry; |
2348 | tcon->nocase = volume_info->nocase; | |
2349 | tcon->local_lease = volume_info->local_lease; | |
1da177e4 | 2350 | } |
4523cc30 | 2351 | if (pSesInfo) { |
1da177e4 LT |
2352 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
2353 | sb->s_maxbytes = (u64) 1 << 63; | |
2354 | } else | |
2355 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
2356 | } | |
2357 | ||
8af18971 | 2358 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
1da177e4 LT |
2359 | sb->s_time_gran = 100; |
2360 | ||
3b795210 | 2361 | mount_fail_check: |
14fbf50d | 2362 | /* on error free sesinfo and tcon struct if needed */ |
1da177e4 | 2363 | if (rc) { |
e7ddee90 JL |
2364 | /* If find_unc succeeded then rc == 0 so we can not end */ |
2365 | /* up accidently freeing someone elses tcon struct */ | |
2366 | if (tcon) | |
f1987b44 JL |
2367 | cifs_put_tcon(tcon); |
2368 | else if (pSesInfo) | |
14fbf50d JL |
2369 | cifs_put_smb_ses(pSesInfo); |
2370 | else | |
2371 | cifs_put_tcp_session(srvTcp); | |
d82c2df5 SF |
2372 | goto out; |
2373 | } | |
d82c2df5 | 2374 | cifs_sb->tcon = tcon; |
d82c2df5 SF |
2375 | |
2376 | /* do not care if following two calls succeed - informational */ | |
2377 | if (!tcon->ipc) { | |
2378 | CIFSSMBQFSDeviceInfo(xid, tcon); | |
2379 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
2380 | } | |
50c2f753 | 2381 | |
d82c2df5 SF |
2382 | /* tell server which Unix caps we support */ |
2383 | if (tcon->ses->capabilities & CAP_UNIX) | |
2384 | /* reset of caps checks mount to see if unix extensions | |
2385 | disabled for just this mount */ | |
7586b765 | 2386 | reset_cifs_unix_caps(xid, tcon, sb, volume_info); |
d82c2df5 SF |
2387 | else |
2388 | tcon->unix_ext = 0; /* server does not support them */ | |
c18c842b | 2389 | |
d82c2df5 SF |
2390 | /* convert forward to back slashes in prepath here if needed */ |
2391 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0) | |
2392 | convert_delimiter(cifs_sb->prepath, CIFS_DIR_SEP(cifs_sb)); | |
03a143c9 | 2393 | |
d82c2df5 SF |
2394 | if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) { |
2395 | cifs_sb->rsize = 1024 * 127; | |
2396 | cFYI(DBG2, ("no very large read support, rsize now 127K")); | |
1da177e4 | 2397 | } |
d82c2df5 SF |
2398 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
2399 | cifs_sb->wsize = min(cifs_sb->wsize, | |
2400 | (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)); | |
2401 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) | |
2402 | cifs_sb->rsize = min(cifs_sb->rsize, | |
2403 | (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)); | |
1da177e4 | 2404 | |
7586b765 | 2405 | /* volume_info->password is freed above when existing session found |
1da177e4 LT |
2406 | (in which case it is not needed anymore) but when new sesion is created |
2407 | the password ptr is put in the new session structure (in which case the | |
2408 | password will be freed at unmount time) */ | |
70fe7dc0 JL |
2409 | out: |
2410 | /* zero out password before freeing */ | |
7586b765 JL |
2411 | if (volume_info) { |
2412 | if (volume_info->password != NULL) { | |
2413 | memset(volume_info->password, 0, | |
2414 | strlen(volume_info->password)); | |
2415 | kfree(volume_info->password); | |
2416 | } | |
2417 | kfree(volume_info->UNC); | |
2418 | kfree(volume_info->prepath); | |
2419 | kfree(volume_info); | |
70fe7dc0 | 2420 | } |
1da177e4 LT |
2421 | FreeXid(xid); |
2422 | return rc; | |
2423 | } | |
2424 | ||
2425 | static int | |
2426 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 2427 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
2428 | const struct nls_table *nls_codepage) |
2429 | { | |
2430 | struct smb_hdr *smb_buffer; | |
2431 | struct smb_hdr *smb_buffer_response; | |
2432 | SESSION_SETUP_ANDX *pSMB; | |
2433 | SESSION_SETUP_ANDX *pSMBr; | |
2434 | char *bcc_ptr; | |
2435 | char *user; | |
2436 | char *domain; | |
2437 | int rc = 0; | |
2438 | int remaining_words = 0; | |
2439 | int bytes_returned = 0; | |
2440 | int len; | |
2441 | __u32 capabilities; | |
2442 | __u16 count; | |
2443 | ||
eeac8047 | 2444 | cFYI(1, ("In sesssetup")); |
4523cc30 | 2445 | if (ses == NULL) |
1da177e4 LT |
2446 | return -EINVAL; |
2447 | user = ses->userName; | |
2448 | domain = ses->domainName; | |
2449 | smb_buffer = cifs_buf_get(); | |
582d21e5 SF |
2450 | |
2451 | if (smb_buffer == NULL) | |
1da177e4 | 2452 | return -ENOMEM; |
582d21e5 | 2453 | |
1da177e4 LT |
2454 | smb_buffer_response = smb_buffer; |
2455 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2456 | ||
2457 | /* send SMBsessionSetup here */ | |
2458 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2459 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2460 | ||
1982c344 | 2461 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2462 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2463 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2464 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2465 | ||
50c2f753 SF |
2466 | if (ses->server->secMode & |
2467 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
2468 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2469 | ||
2470 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2471 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2472 | if (ses->capabilities & CAP_UNICODE) { | |
2473 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2474 | capabilities |= CAP_UNICODE; | |
2475 | } | |
2476 | if (ses->capabilities & CAP_STATUS32) { | |
2477 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2478 | capabilities |= CAP_STATUS32; | |
2479 | } | |
2480 | if (ses->capabilities & CAP_DFS) { | |
2481 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2482 | capabilities |= CAP_DFS; | |
2483 | } | |
2484 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2485 | ||
50c2f753 | 2486 | pSMB->req_no_secext.CaseInsensitivePasswordLength = |
7c7b25bc | 2487 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2488 | |
2489 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2490 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2491 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2492 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2493 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2494 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2495 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2496 | |
2497 | if (ses->capabilities & CAP_UNICODE) { | |
2498 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2499 | *bcc_ptr = 0; | |
2500 | bcc_ptr++; | |
2501 | } | |
4523cc30 | 2502 | if (user == NULL) |
3979877e | 2503 | bytes_returned = 0; /* skip null user */ |
50c2f753 | 2504 | else |
1da177e4 | 2505 | bytes_returned = |
50c2f753 | 2506 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2507 | nls_codepage); |
2508 | /* convert number of 16 bit words to bytes */ | |
2509 | bcc_ptr += 2 * bytes_returned; | |
2510 | bcc_ptr += 2; /* trailing null */ | |
2511 | if (domain == NULL) | |
2512 | bytes_returned = | |
e89dc920 | 2513 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2514 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2515 | else | |
2516 | bytes_returned = | |
e89dc920 | 2517 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2518 | nls_codepage); |
2519 | bcc_ptr += 2 * bytes_returned; | |
2520 | bcc_ptr += 2; | |
2521 | bytes_returned = | |
e89dc920 | 2522 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2523 | 32, nls_codepage); |
2524 | bcc_ptr += 2 * bytes_returned; | |
2525 | bytes_returned = | |
e9ff3990 | 2526 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, |
1da177e4 LT |
2527 | 32, nls_codepage); |
2528 | bcc_ptr += 2 * bytes_returned; | |
2529 | bcc_ptr += 2; | |
2530 | bytes_returned = | |
e89dc920 | 2531 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2532 | 64, nls_codepage); |
2533 | bcc_ptr += 2 * bytes_returned; | |
2534 | bcc_ptr += 2; | |
2535 | } else { | |
50c2f753 | 2536 | if (user != NULL) { |
1da177e4 LT |
2537 | strncpy(bcc_ptr, user, 200); |
2538 | bcc_ptr += strnlen(user, 200); | |
2539 | } | |
2540 | *bcc_ptr = 0; | |
2541 | bcc_ptr++; | |
2542 | if (domain == NULL) { | |
2543 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2544 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2545 | } else { | |
2546 | strncpy(bcc_ptr, domain, 64); | |
2547 | bcc_ptr += strnlen(domain, 64); | |
2548 | *bcc_ptr = 0; | |
2549 | bcc_ptr++; | |
2550 | } | |
2551 | strcpy(bcc_ptr, "Linux version "); | |
2552 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2553 | strcpy(bcc_ptr, utsname()->release); |
2554 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2555 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2556 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2557 | } | |
2558 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2559 | smb_buffer->smb_buf_length += count; | |
2560 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2561 | ||
2562 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2563 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2564 | if (rc) { |
2565 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2566 | } else if ((smb_buffer_response->WordCount == 3) | |
2567 | || (smb_buffer_response->WordCount == 4)) { | |
2568 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2569 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2570 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2571 | cFYI(1, (" Guest login")); /* BB mark SesInfo struct? */ |
2572 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format | |
2573 | (little endian) */ | |
1da177e4 | 2574 | cFYI(1, ("UID = %d ", ses->Suid)); |
50c2f753 SF |
2575 | /* response can have either 3 or 4 word count - Samba sends 3 */ |
2576 | bcc_ptr = pByteArea(smb_buffer_response); | |
1da177e4 LT |
2577 | if ((pSMBr->resp.hdr.WordCount == 3) |
2578 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2579 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2580 | if (pSMBr->resp.hdr.WordCount == 4) | |
2581 | bcc_ptr += blob_len; | |
2582 | ||
2583 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2584 | if ((long) (bcc_ptr) % 2) { | |
2585 | remaining_words = | |
50c2f753 SF |
2586 | (BCC(smb_buffer_response) - 1) / 2; |
2587 | /* Unicode strings must be word | |
2588 | aligned */ | |
2589 | bcc_ptr++; | |
1da177e4 LT |
2590 | } else { |
2591 | remaining_words = | |
2592 | BCC(smb_buffer_response) / 2; | |
2593 | } | |
2594 | len = | |
2595 | UniStrnlen((wchar_t *) bcc_ptr, | |
2596 | remaining_words - 1); | |
2597 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2598 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2599 | terminating last Unicode string in response */ | |
fb8c4b14 | 2600 | if (ses->serverOS) |
a424f8bf | 2601 | kfree(ses->serverOS); |
50c2f753 SF |
2602 | ses->serverOS = kzalloc(2 * (len + 1), |
2603 | GFP_KERNEL); | |
fb8c4b14 | 2604 | if (ses->serverOS == NULL) |
433dc24f | 2605 | goto sesssetup_nomem; |
1da177e4 | 2606 | cifs_strfromUCS_le(ses->serverOS, |
50c2f753 SF |
2607 | (__le16 *)bcc_ptr, |
2608 | len, nls_codepage); | |
1da177e4 LT |
2609 | bcc_ptr += 2 * (len + 1); |
2610 | remaining_words -= len + 1; | |
2611 | ses->serverOS[2 * len] = 0; | |
2612 | ses->serverOS[1 + (2 * len)] = 0; | |
2613 | if (remaining_words > 0) { | |
2614 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2615 | remaining_words-1); | |
cd49b492 | 2616 | kfree(ses->serverNOS); |
50c2f753 SF |
2617 | ses->serverNOS = kzalloc(2 * (len + 1), |
2618 | GFP_KERNEL); | |
fb8c4b14 | 2619 | if (ses->serverNOS == NULL) |
433dc24f | 2620 | goto sesssetup_nomem; |
1da177e4 | 2621 | cifs_strfromUCS_le(ses->serverNOS, |
50c2f753 SF |
2622 | (__le16 *)bcc_ptr, |
2623 | len, nls_codepage); | |
1da177e4 LT |
2624 | bcc_ptr += 2 * (len + 1); |
2625 | ses->serverNOS[2 * len] = 0; | |
2626 | ses->serverNOS[1 + (2 * len)] = 0; | |
fb8c4b14 | 2627 | if (strncmp(ses->serverNOS, |
50c2f753 | 2628 | "NT LAN Manager 4", 16) == 0) { |
467a8f8d | 2629 | cFYI(1, ("NT4 server")); |
1da177e4 LT |
2630 | ses->flags |= CIFS_SES_NT4; |
2631 | } | |
2632 | remaining_words -= len + 1; | |
2633 | if (remaining_words > 0) { | |
433dc24f | 2634 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
50c2f753 SF |
2635 | /* last string is not always null terminated |
2636 | (for e.g. for Windows XP & 2000) */ | |
fb8c4b14 | 2637 | if (ses->serverDomain) |
a424f8bf | 2638 | kfree(ses->serverDomain); |
1da177e4 | 2639 | ses->serverDomain = |
50c2f753 SF |
2640 | kzalloc(2*(len+1), |
2641 | GFP_KERNEL); | |
fb8c4b14 | 2642 | if (ses->serverDomain == NULL) |
433dc24f | 2643 | goto sesssetup_nomem; |
1da177e4 | 2644 | cifs_strfromUCS_le(ses->serverDomain, |
50c2f753 SF |
2645 | (__le16 *)bcc_ptr, |
2646 | len, nls_codepage); | |
1da177e4 LT |
2647 | bcc_ptr += 2 * (len + 1); |
2648 | ses->serverDomain[2*len] = 0; | |
2649 | ses->serverDomain[1+(2*len)] = 0; | |
50c2f753 SF |
2650 | } else { /* else no more room so create |
2651 | dummy domain string */ | |
fb8c4b14 | 2652 | if (ses->serverDomain) |
a424f8bf | 2653 | kfree(ses->serverDomain); |
50c2f753 | 2654 | ses->serverDomain = |
e915fc49 | 2655 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2656 | } |
50c2f753 SF |
2657 | } else { /* no room so create dummy domain |
2658 | and NOS string */ | |
2659 | ||
433dc24f SF |
2660 | /* if these kcallocs fail not much we |
2661 | can do, but better to not fail the | |
2662 | sesssetup itself */ | |
cd49b492 | 2663 | kfree(ses->serverDomain); |
1da177e4 | 2664 | ses->serverDomain = |
e915fc49 | 2665 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2666 | kfree(ses->serverNOS); |
1da177e4 | 2667 | ses->serverNOS = |
e915fc49 | 2668 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2669 | } |
2670 | } else { /* ASCII */ | |
2671 | len = strnlen(bcc_ptr, 1024); | |
2672 | if (((long) bcc_ptr + len) - (long) | |
2673 | pByteArea(smb_buffer_response) | |
2674 | <= BCC(smb_buffer_response)) { | |
cd49b492 | 2675 | kfree(ses->serverOS); |
50c2f753 SF |
2676 | ses->serverOS = kzalloc(len + 1, |
2677 | GFP_KERNEL); | |
fb8c4b14 | 2678 | if (ses->serverOS == NULL) |
433dc24f | 2679 | goto sesssetup_nomem; |
50c2f753 | 2680 | strncpy(ses->serverOS, bcc_ptr, len); |
1da177e4 LT |
2681 | |
2682 | bcc_ptr += len; | |
50c2f753 SF |
2683 | /* null terminate the string */ |
2684 | bcc_ptr[0] = 0; | |
1da177e4 LT |
2685 | bcc_ptr++; |
2686 | ||
2687 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2688 | kfree(ses->serverNOS); |
50c2f753 SF |
2689 | ses->serverNOS = kzalloc(len + 1, |
2690 | GFP_KERNEL); | |
fb8c4b14 | 2691 | if (ses->serverNOS == NULL) |
433dc24f | 2692 | goto sesssetup_nomem; |
1da177e4 LT |
2693 | strncpy(ses->serverNOS, bcc_ptr, len); |
2694 | bcc_ptr += len; | |
2695 | bcc_ptr[0] = 0; | |
2696 | bcc_ptr++; | |
2697 | ||
2698 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 2699 | if (ses->serverDomain) |
a424f8bf | 2700 | kfree(ses->serverDomain); |
50c2f753 SF |
2701 | ses->serverDomain = kzalloc(len + 1, |
2702 | GFP_KERNEL); | |
fb8c4b14 | 2703 | if (ses->serverDomain == NULL) |
433dc24f | 2704 | goto sesssetup_nomem; |
50c2f753 SF |
2705 | strncpy(ses->serverDomain, bcc_ptr, |
2706 | len); | |
1da177e4 LT |
2707 | bcc_ptr += len; |
2708 | bcc_ptr[0] = 0; | |
2709 | bcc_ptr++; | |
2710 | } else | |
2711 | cFYI(1, | |
50c2f753 SF |
2712 | ("Variable field of length %d " |
2713 | "extends beyond end of smb ", | |
1da177e4 LT |
2714 | len)); |
2715 | } | |
2716 | } else { | |
2717 | cERROR(1, | |
50c2f753 SF |
2718 | (" Security Blob Length extends beyond " |
2719 | "end of SMB")); | |
1da177e4 LT |
2720 | } |
2721 | } else { | |
2722 | cERROR(1, | |
2723 | (" Invalid Word count %d: ", | |
2724 | smb_buffer_response->WordCount)); | |
2725 | rc = -EIO; | |
2726 | } | |
433dc24f SF |
2727 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2728 | since that could make reconnection harder, and | |
2729 | reconnection might be needed to free memory */ | |
a8a11d39 | 2730 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2731 | |
2732 | return rc; | |
2733 | } | |
2734 | ||
1da177e4 LT |
2735 | static int |
2736 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
4b18f2a9 | 2737 | struct cifsSesInfo *ses, bool *pNTLMv2_flag, |
1da177e4 LT |
2738 | const struct nls_table *nls_codepage) |
2739 | { | |
2740 | struct smb_hdr *smb_buffer; | |
2741 | struct smb_hdr *smb_buffer_response; | |
2742 | SESSION_SETUP_ANDX *pSMB; | |
2743 | SESSION_SETUP_ANDX *pSMBr; | |
2744 | char *bcc_ptr; | |
2745 | char *domain; | |
2746 | int rc = 0; | |
2747 | int remaining_words = 0; | |
2748 | int bytes_returned = 0; | |
2749 | int len; | |
6345a3a8 | 2750 | int SecurityBlobLength = sizeof(NEGOTIATE_MESSAGE); |
1da177e4 LT |
2751 | PNEGOTIATE_MESSAGE SecurityBlob; |
2752 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2753 | __u32 negotiate_flags, capabilities; | |
2754 | __u16 count; | |
2755 | ||
12b3b8ff | 2756 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
fb8c4b14 | 2757 | if (ses == NULL) |
1da177e4 LT |
2758 | return -EINVAL; |
2759 | domain = ses->domainName; | |
4b18f2a9 | 2760 | *pNTLMv2_flag = false; |
1da177e4 LT |
2761 | smb_buffer = cifs_buf_get(); |
2762 | if (smb_buffer == NULL) { | |
2763 | return -ENOMEM; | |
2764 | } | |
2765 | smb_buffer_response = smb_buffer; | |
2766 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2767 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2768 | ||
2769 | /* send SMBsessionSetup here */ | |
2770 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2771 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2772 | |
2773 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2774 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2775 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2776 | ||
2777 | pSMB->req.AndXCommand = 0xFF; | |
2778 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2779 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2780 | ||
fb8c4b14 | 2781 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2782 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2783 | ||
2784 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2785 | CAP_EXTENDED_SECURITY; | |
2786 | if (ses->capabilities & CAP_UNICODE) { | |
2787 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2788 | capabilities |= CAP_UNICODE; | |
2789 | } | |
2790 | if (ses->capabilities & CAP_STATUS32) { | |
2791 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2792 | capabilities |= CAP_STATUS32; | |
2793 | } | |
2794 | if (ses->capabilities & CAP_DFS) { | |
2795 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2796 | capabilities |= CAP_DFS; | |
2797 | } | |
2798 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2799 | ||
2800 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2801 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2802 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2803 | SecurityBlob->MessageType = NtLmNegotiate; | |
2804 | negotiate_flags = | |
2805 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2806 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2807 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 | 2808 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
fb8c4b14 | 2809 | if (sign_CIFS_PDUs) |
1da177e4 | 2810 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 2811 | /* if (ntlmv2_support) |
3979877e | 2812 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ |
1da177e4 LT |
2813 | /* setup pointers to domain name and workstation name */ |
2814 | bcc_ptr += SecurityBlobLength; | |
2815 | ||
2816 | SecurityBlob->WorkstationName.Buffer = 0; | |
2817 | SecurityBlob->WorkstationName.Length = 0; | |
2818 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2819 | ||
12b3b8ff SF |
2820 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2821 | along with username on auth request (ie the response to challenge) */ | |
2822 | SecurityBlob->DomainName.Buffer = 0; | |
2823 | SecurityBlob->DomainName.Length = 0; | |
2824 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2825 | if (ses->capabilities & CAP_UNICODE) { |
2826 | if ((long) bcc_ptr % 2) { | |
2827 | *bcc_ptr = 0; | |
2828 | bcc_ptr++; | |
2829 | } | |
2830 | ||
2831 | bytes_returned = | |
e89dc920 | 2832 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2833 | 32, nls_codepage); |
2834 | bcc_ptr += 2 * bytes_returned; | |
2835 | bytes_returned = | |
e9ff3990 | 2836 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2837 | nls_codepage); |
2838 | bcc_ptr += 2 * bytes_returned; | |
2839 | bcc_ptr += 2; /* null terminate Linux version */ | |
2840 | bytes_returned = | |
e89dc920 | 2841 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2842 | 64, nls_codepage); |
2843 | bcc_ptr += 2 * bytes_returned; | |
2844 | *(bcc_ptr + 1) = 0; | |
2845 | *(bcc_ptr + 2) = 0; | |
2846 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2847 | *(bcc_ptr + 1) = 0; | |
2848 | *(bcc_ptr + 2) = 0; | |
2849 | bcc_ptr += 2; /* null domain */ | |
2850 | } else { /* ASCII */ | |
2851 | strcpy(bcc_ptr, "Linux version "); | |
2852 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2853 | strcpy(bcc_ptr, utsname()->release); |
2854 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2855 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2856 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2857 | bcc_ptr++; /* empty domain field */ | |
2858 | *bcc_ptr = 0; | |
2859 | } | |
2860 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2861 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2862 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2863 | smb_buffer->smb_buf_length += count; | |
2864 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2865 | ||
2866 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2867 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2868 | |
2869 | if (smb_buffer_response->Status.CifsError == | |
2870 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2871 | rc = 0; | |
2872 | ||
2873 | if (rc) { | |
2874 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2875 | } else if ((smb_buffer_response->WordCount == 3) | |
2876 | || (smb_buffer_response->WordCount == 4)) { | |
2877 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2878 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2879 | ||
2880 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2881 | cFYI(1, (" Guest login")); |
2882 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
1da177e4 | 2883 | |
50c2f753 SF |
2884 | bcc_ptr = pByteArea(smb_buffer_response); |
2885 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
2886 | |
2887 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2888 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2889 | cFYI(1, | |
2890 | ("Unexpected NTLMSSP message type received %d", | |
2891 | SecurityBlob2->MessageType)); | |
2892 | } else if (ses) { | |
50c2f753 | 2893 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ |
12b3b8ff | 2894 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2895 | if ((pSMBr->resp.hdr.WordCount == 3) |
2896 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2897 | && (blob_len < | |
2898 | pSMBr->resp.ByteCount))) { | |
2899 | ||
2900 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2901 | bcc_ptr += blob_len; | |
12b3b8ff | 2902 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2903 | blob_len)); |
2904 | } | |
2905 | ||
12b3b8ff | 2906 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2907 | |
2908 | memcpy(ses->server->cryptKey, | |
2909 | SecurityBlob2->Challenge, | |
2910 | CIFS_CRYPTO_KEY_SIZE); | |
50c2f753 | 2911 | if (SecurityBlob2->NegotiateFlags & |
12b3b8ff | 2912 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) |
4b18f2a9 | 2913 | *pNTLMv2_flag = true; |
1da177e4 | 2914 | |
50c2f753 SF |
2915 | if ((SecurityBlob2->NegotiateFlags & |
2916 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
1da177e4 | 2917 | || (sign_CIFS_PDUs > 1)) |
50c2f753 SF |
2918 | ses->server->secMode |= |
2919 | SECMODE_SIGN_REQUIRED; | |
2920 | if ((SecurityBlob2->NegotiateFlags & | |
1da177e4 | 2921 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) |
50c2f753 | 2922 | ses->server->secMode |= |
1da177e4 LT |
2923 | SECMODE_SIGN_ENABLED; |
2924 | ||
2925 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2926 | if ((long) (bcc_ptr) % 2) { | |
2927 | remaining_words = | |
2928 | (BCC(smb_buffer_response) | |
2929 | - 1) / 2; | |
50c2f753 SF |
2930 | /* Must word align unicode strings */ |
2931 | bcc_ptr++; | |
1da177e4 LT |
2932 | } else { |
2933 | remaining_words = | |
2934 | BCC | |
2935 | (smb_buffer_response) / 2; | |
2936 | } | |
2937 | len = | |
2938 | UniStrnlen((wchar_t *) bcc_ptr, | |
2939 | remaining_words - 1); | |
2940 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2941 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2942 | terminating last Unicode string in response */ | |
fb8c4b14 | 2943 | if (ses->serverOS) |
a424f8bf | 2944 | kfree(ses->serverOS); |
1da177e4 | 2945 | ses->serverOS = |
e915fc49 | 2946 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2947 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2948 | (__le16 *) |
1da177e4 LT |
2949 | bcc_ptr, len, |
2950 | nls_codepage); | |
2951 | bcc_ptr += 2 * (len + 1); | |
2952 | remaining_words -= len + 1; | |
2953 | ses->serverOS[2 * len] = 0; | |
2954 | ses->serverOS[1 + (2 * len)] = 0; | |
2955 | if (remaining_words > 0) { | |
2956 | len = UniStrnlen((wchar_t *) | |
2957 | bcc_ptr, | |
2958 | remaining_words | |
2959 | - 1); | |
cd49b492 | 2960 | kfree(ses->serverNOS); |
1da177e4 | 2961 | ses->serverNOS = |
e915fc49 | 2962 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2963 | GFP_KERNEL); |
2964 | cifs_strfromUCS_le(ses-> | |
2965 | serverNOS, | |
e89dc920 | 2966 | (__le16 *) |
1da177e4 LT |
2967 | bcc_ptr, |
2968 | len, | |
2969 | nls_codepage); | |
2970 | bcc_ptr += 2 * (len + 1); | |
2971 | ses->serverNOS[2 * len] = 0; | |
2972 | ses->serverNOS[1 + | |
2973 | (2 * len)] = 0; | |
2974 | remaining_words -= len + 1; | |
2975 | if (remaining_words > 0) { | |
50c2f753 SF |
2976 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
2977 | /* last string not always null terminated | |
2978 | (for e.g. for Windows XP & 2000) */ | |
cd49b492 | 2979 | kfree(ses->serverDomain); |
1da177e4 | 2980 | ses->serverDomain = |
e915fc49 | 2981 | kzalloc(2 * |
1da177e4 LT |
2982 | (len + |
2983 | 1), | |
2984 | GFP_KERNEL); | |
2985 | cifs_strfromUCS_le | |
e89dc920 SF |
2986 | (ses->serverDomain, |
2987 | (__le16 *)bcc_ptr, | |
2988 | len, nls_codepage); | |
1da177e4 LT |
2989 | bcc_ptr += |
2990 | 2 * (len + 1); | |
e89dc920 | 2991 | ses->serverDomain[2*len] |
1da177e4 | 2992 | = 0; |
e89dc920 SF |
2993 | ses->serverDomain |
2994 | [1 + (2 * len)] | |
1da177e4 LT |
2995 | = 0; |
2996 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 2997 | else { |
cd49b492 | 2998 | kfree(ses->serverDomain); |
1da177e4 | 2999 | ses->serverDomain = |
e915fc49 | 3000 | kzalloc(2, |
1da177e4 | 3001 | GFP_KERNEL); |
a424f8bf | 3002 | } |
1da177e4 | 3003 | } else { /* no room so create dummy domain and NOS string */ |
cd49b492 | 3004 | kfree(ses->serverDomain); |
1da177e4 | 3005 | ses->serverDomain = |
e915fc49 | 3006 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 3007 | kfree(ses->serverNOS); |
1da177e4 | 3008 | ses->serverNOS = |
e915fc49 | 3009 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3010 | } |
3011 | } else { /* ASCII */ | |
3012 | len = strnlen(bcc_ptr, 1024); | |
3013 | if (((long) bcc_ptr + len) - (long) | |
3014 | pByteArea(smb_buffer_response) | |
3015 | <= BCC(smb_buffer_response)) { | |
fb8c4b14 | 3016 | if (ses->serverOS) |
a424f8bf | 3017 | kfree(ses->serverOS); |
1da177e4 | 3018 | ses->serverOS = |
e915fc49 | 3019 | kzalloc(len + 1, |
1da177e4 LT |
3020 | GFP_KERNEL); |
3021 | strncpy(ses->serverOS, | |
3022 | bcc_ptr, len); | |
3023 | ||
3024 | bcc_ptr += len; | |
3025 | bcc_ptr[0] = 0; /* null terminate string */ | |
3026 | bcc_ptr++; | |
3027 | ||
3028 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3029 | kfree(ses->serverNOS); |
1da177e4 | 3030 | ses->serverNOS = |
e915fc49 | 3031 | kzalloc(len + 1, |
1da177e4 LT |
3032 | GFP_KERNEL); |
3033 | strncpy(ses->serverNOS, bcc_ptr, len); | |
3034 | bcc_ptr += len; | |
3035 | bcc_ptr[0] = 0; | |
3036 | bcc_ptr++; | |
3037 | ||
3038 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3039 | kfree(ses->serverDomain); |
1da177e4 | 3040 | ses->serverDomain = |
e915fc49 | 3041 | kzalloc(len + 1, |
1da177e4 | 3042 | GFP_KERNEL); |
50c2f753 SF |
3043 | strncpy(ses->serverDomain, |
3044 | bcc_ptr, len); | |
1da177e4 LT |
3045 | bcc_ptr += len; |
3046 | bcc_ptr[0] = 0; | |
3047 | bcc_ptr++; | |
3048 | } else | |
3049 | cFYI(1, | |
63135e08 SF |
3050 | ("field of length %d " |
3051 | "extends beyond end of smb", | |
1da177e4 LT |
3052 | len)); |
3053 | } | |
3054 | } else { | |
50c2f753 SF |
3055 | cERROR(1, ("Security Blob Length extends beyond" |
3056 | " end of SMB")); | |
1da177e4 LT |
3057 | } |
3058 | } else { | |
3059 | cERROR(1, ("No session structure passed in.")); | |
3060 | } | |
3061 | } else { | |
3062 | cERROR(1, | |
5815449d | 3063 | (" Invalid Word count %d:", |
1da177e4 LT |
3064 | smb_buffer_response->WordCount)); |
3065 | rc = -EIO; | |
3066 | } | |
3067 | ||
a8a11d39 | 3068 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3069 | |
3070 | return rc; | |
3071 | } | |
3072 | static int | |
3073 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
4b18f2a9 | 3074 | char *ntlm_session_key, bool ntlmv2_flag, |
6345a3a8 | 3075 | const struct nls_table *nls_codepage) |
1da177e4 LT |
3076 | { |
3077 | struct smb_hdr *smb_buffer; | |
3078 | struct smb_hdr *smb_buffer_response; | |
3079 | SESSION_SETUP_ANDX *pSMB; | |
3080 | SESSION_SETUP_ANDX *pSMBr; | |
3081 | char *bcc_ptr; | |
3082 | char *user; | |
3083 | char *domain; | |
3084 | int rc = 0; | |
3085 | int remaining_words = 0; | |
3086 | int bytes_returned = 0; | |
3087 | int len; | |
6345a3a8 | 3088 | int SecurityBlobLength = sizeof(AUTHENTICATE_MESSAGE); |
1da177e4 LT |
3089 | PAUTHENTICATE_MESSAGE SecurityBlob; |
3090 | __u32 negotiate_flags, capabilities; | |
3091 | __u16 count; | |
3092 | ||
3093 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
fb8c4b14 | 3094 | if (ses == NULL) |
1da177e4 LT |
3095 | return -EINVAL; |
3096 | user = ses->userName; | |
3097 | domain = ses->domainName; | |
3098 | smb_buffer = cifs_buf_get(); | |
3099 | if (smb_buffer == NULL) { | |
3100 | return -ENOMEM; | |
3101 | } | |
3102 | smb_buffer_response = smb_buffer; | |
6345a3a8 CG |
3103 | pSMB = (SESSION_SETUP_ANDX *)smb_buffer; |
3104 | pSMBr = (SESSION_SETUP_ANDX *)smb_buffer_response; | |
1da177e4 LT |
3105 | |
3106 | /* send SMBsessionSetup here */ | |
3107 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
3108 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
3109 | |
3110 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3111 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
3112 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
3113 | pSMB->req.AndXCommand = 0xFF; | |
3114 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
3115 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
3116 | ||
3117 | pSMB->req.hdr.Uid = ses->Suid; | |
3118 | ||
fb8c4b14 | 3119 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3120 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3121 | ||
3122 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
6345a3a8 | 3123 | CAP_EXTENDED_SECURITY; |
1da177e4 LT |
3124 | if (ses->capabilities & CAP_UNICODE) { |
3125 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3126 | capabilities |= CAP_UNICODE; | |
3127 | } | |
3128 | if (ses->capabilities & CAP_STATUS32) { | |
3129 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3130 | capabilities |= CAP_STATUS32; | |
3131 | } | |
3132 | if (ses->capabilities & CAP_DFS) { | |
3133 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3134 | capabilities |= CAP_DFS; | |
3135 | } | |
3136 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
3137 | ||
6345a3a8 CG |
3138 | bcc_ptr = (char *)&pSMB->req.SecurityBlob; |
3139 | SecurityBlob = (PAUTHENTICATE_MESSAGE)bcc_ptr; | |
1da177e4 LT |
3140 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); |
3141 | SecurityBlob->MessageType = NtLmAuthenticate; | |
3142 | bcc_ptr += SecurityBlobLength; | |
6345a3a8 CG |
3143 | negotiate_flags = NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | |
3144 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
3145 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
fb8c4b14 | 3146 | if (sign_CIFS_PDUs) |
1da177e4 | 3147 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 3148 | if (ntlmv2_flag) |
1da177e4 LT |
3149 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; |
3150 | ||
3151 | /* setup pointers to domain name and workstation name */ | |
3152 | ||
3153 | SecurityBlob->WorkstationName.Buffer = 0; | |
3154 | SecurityBlob->WorkstationName.Length = 0; | |
3155 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
3156 | SecurityBlob->SessionKey.Length = 0; | |
3157 | SecurityBlob->SessionKey.MaximumLength = 0; | |
3158 | SecurityBlob->SessionKey.Buffer = 0; | |
3159 | ||
3160 | SecurityBlob->LmChallengeResponse.Length = 0; | |
3161 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
3162 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
3163 | ||
3164 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 3165 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 3166 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
3167 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
3168 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
3169 | SecurityBlob->NtChallengeResponse.Buffer = |
3170 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
3171 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
3172 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
3173 | |
3174 | if (ses->capabilities & CAP_UNICODE) { | |
3175 | if (domain == NULL) { | |
3176 | SecurityBlob->DomainName.Buffer = 0; | |
3177 | SecurityBlob->DomainName.Length = 0; | |
3178 | SecurityBlob->DomainName.MaximumLength = 0; | |
3179 | } else { | |
77159b4d | 3180 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 | 3181 | nls_codepage); |
77159b4d | 3182 | ln *= 2; |
1da177e4 | 3183 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3184 | cpu_to_le16(ln); |
1da177e4 LT |
3185 | SecurityBlob->DomainName.Buffer = |
3186 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3187 | bcc_ptr += ln; |
3188 | SecurityBlobLength += ln; | |
3189 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3190 | } |
3191 | if (user == NULL) { | |
3192 | SecurityBlob->UserName.Buffer = 0; | |
3193 | SecurityBlob->UserName.Length = 0; | |
3194 | SecurityBlob->UserName.MaximumLength = 0; | |
3195 | } else { | |
77159b4d | 3196 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 | 3197 | nls_codepage); |
77159b4d | 3198 | ln *= 2; |
1da177e4 | 3199 | SecurityBlob->UserName.MaximumLength = |
77159b4d | 3200 | cpu_to_le16(ln); |
1da177e4 LT |
3201 | SecurityBlob->UserName.Buffer = |
3202 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3203 | bcc_ptr += ln; |
3204 | SecurityBlobLength += ln; | |
3205 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3206 | } |
3207 | ||
63135e08 SF |
3208 | /* SecurityBlob->WorkstationName.Length = |
3209 | cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); | |
1da177e4 | 3210 | SecurityBlob->WorkstationName.Length *= 2; |
63135e08 SF |
3211 | SecurityBlob->WorkstationName.MaximumLength = |
3212 | cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
3213 | SecurityBlob->WorkstationName.Buffer = | |
3214 | cpu_to_le32(SecurityBlobLength); | |
1da177e4 LT |
3215 | bcc_ptr += SecurityBlob->WorkstationName.Length; |
3216 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
63135e08 SF |
3217 | SecurityBlob->WorkstationName.Length = |
3218 | cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
1da177e4 LT |
3219 | |
3220 | if ((long) bcc_ptr % 2) { | |
3221 | *bcc_ptr = 0; | |
3222 | bcc_ptr++; | |
3223 | } | |
3224 | bytes_returned = | |
e89dc920 | 3225 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
3226 | 32, nls_codepage); |
3227 | bcc_ptr += 2 * bytes_returned; | |
3228 | bytes_returned = | |
e9ff3990 | 3229 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
3230 | nls_codepage); |
3231 | bcc_ptr += 2 * bytes_returned; | |
3232 | bcc_ptr += 2; /* null term version string */ | |
3233 | bytes_returned = | |
e89dc920 | 3234 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
3235 | 64, nls_codepage); |
3236 | bcc_ptr += 2 * bytes_returned; | |
3237 | *(bcc_ptr + 1) = 0; | |
3238 | *(bcc_ptr + 2) = 0; | |
3239 | bcc_ptr += 2; /* null terminate network opsys string */ | |
3240 | *(bcc_ptr + 1) = 0; | |
3241 | *(bcc_ptr + 2) = 0; | |
3242 | bcc_ptr += 2; /* null domain */ | |
3243 | } else { /* ASCII */ | |
3244 | if (domain == NULL) { | |
3245 | SecurityBlob->DomainName.Buffer = 0; | |
3246 | SecurityBlob->DomainName.Length = 0; | |
3247 | SecurityBlob->DomainName.MaximumLength = 0; | |
3248 | } else { | |
77159b4d | 3249 | __u16 ln; |
1da177e4 LT |
3250 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; |
3251 | strncpy(bcc_ptr, domain, 63); | |
77159b4d | 3252 | ln = strnlen(domain, 64); |
1da177e4 | 3253 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3254 | cpu_to_le16(ln); |
1da177e4 LT |
3255 | SecurityBlob->DomainName.Buffer = |
3256 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3257 | bcc_ptr += ln; |
3258 | SecurityBlobLength += ln; | |
3259 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3260 | } |
3261 | if (user == NULL) { | |
3262 | SecurityBlob->UserName.Buffer = 0; | |
3263 | SecurityBlob->UserName.Length = 0; | |
3264 | SecurityBlob->UserName.MaximumLength = 0; | |
3265 | } else { | |
77159b4d | 3266 | __u16 ln; |
1da177e4 | 3267 | strncpy(bcc_ptr, user, 63); |
77159b4d SF |
3268 | ln = strnlen(user, 64); |
3269 | SecurityBlob->UserName.MaximumLength = cpu_to_le16(ln); | |
1da177e4 | 3270 | SecurityBlob->UserName.Buffer = |
77159b4d SF |
3271 | cpu_to_le32(SecurityBlobLength); |
3272 | bcc_ptr += ln; | |
3273 | SecurityBlobLength += ln; | |
3274 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3275 | } |
3276 | /* BB fill in our workstation name if known BB */ | |
3277 | ||
3278 | strcpy(bcc_ptr, "Linux version "); | |
3279 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
3280 | strcpy(bcc_ptr, utsname()->release); |
3281 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
3282 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
3283 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
3284 | bcc_ptr++; /* null domain */ | |
3285 | *bcc_ptr = 0; | |
3286 | } | |
3287 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
3288 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
3289 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
3290 | smb_buffer->smb_buf_length += count; | |
3291 | pSMB->req.ByteCount = cpu_to_le16(count); | |
3292 | ||
3293 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 3294 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 | 3295 | if (rc) { |
6345a3a8 CG |
3296 | /* rc = map_smb_to_linux_error(smb_buffer_response) done in SendReceive now */ |
3297 | } else if ((smb_buffer_response->WordCount == 3) || | |
3298 | (smb_buffer_response->WordCount == 4)) { | |
1da177e4 | 3299 | __u16 action = le16_to_cpu(pSMBr->resp.Action); |
6345a3a8 | 3300 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); |
1da177e4 | 3301 | if (action & GUEST_LOGIN) |
50c2f753 SF |
3302 | cFYI(1, (" Guest login")); /* BB Should we set anything |
3303 | in SesInfo struct ? */ | |
3304 | /* if (SecurityBlob2->MessageType != NtLm??) { | |
3305 | cFYI("Unexpected message type on auth response is %d")); | |
3306 | } */ | |
3307 | ||
1da177e4 LT |
3308 | if (ses) { |
3309 | cFYI(1, | |
50c2f753 | 3310 | ("Check challenge UID %d vs auth response UID %d", |
1da177e4 | 3311 | ses->Suid, smb_buffer_response->Uid)); |
50c2f753 SF |
3312 | /* UID left in wire format */ |
3313 | ses->Suid = smb_buffer_response->Uid; | |
3314 | bcc_ptr = pByteArea(smb_buffer_response); | |
3315 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
3316 | if ((pSMBr->resp.hdr.WordCount == 3) |
3317 | || ((pSMBr->resp.hdr.WordCount == 4) | |
3318 | && (blob_len < | |
3319 | pSMBr->resp.ByteCount))) { | |
3320 | if (pSMBr->resp.hdr.WordCount == 4) { | |
3321 | bcc_ptr += | |
3322 | blob_len; | |
3323 | cFYI(1, | |
3324 | ("Security Blob Length %d ", | |
3325 | blob_len)); | |
3326 | } | |
3327 | ||
3328 | cFYI(1, | |
3329 | ("NTLMSSP response to Authenticate ")); | |
3330 | ||
3331 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3332 | if ((long) (bcc_ptr) % 2) { | |
3333 | remaining_words = | |
3334 | (BCC(smb_buffer_response) | |
3335 | - 1) / 2; | |
3336 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
3337 | } else { | |
3338 | remaining_words = BCC(smb_buffer_response) / 2; | |
3339 | } | |
77159b4d SF |
3340 | len = UniStrnlen((wchar_t *) bcc_ptr, |
3341 | remaining_words - 1); | |
1da177e4 LT |
3342 | /* We look for obvious messed up bcc or strings in response so we do not go off |
3343 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
3344 | terminating last Unicode string in response */ | |
fb8c4b14 | 3345 | if (ses->serverOS) |
08775834 | 3346 | kfree(ses->serverOS); |
1da177e4 | 3347 | ses->serverOS = |
e915fc49 | 3348 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 3349 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 3350 | (__le16 *) |
1da177e4 LT |
3351 | bcc_ptr, len, |
3352 | nls_codepage); | |
3353 | bcc_ptr += 2 * (len + 1); | |
3354 | remaining_words -= len + 1; | |
3355 | ses->serverOS[2 * len] = 0; | |
3356 | ses->serverOS[1 + (2 * len)] = 0; | |
3357 | if (remaining_words > 0) { | |
3358 | len = UniStrnlen((wchar_t *) | |
3359 | bcc_ptr, | |
3360 | remaining_words | |
3361 | - 1); | |
cd49b492 | 3362 | kfree(ses->serverNOS); |
1da177e4 | 3363 | ses->serverNOS = |
e915fc49 | 3364 | kzalloc(2 * (len + 1), |
1da177e4 LT |
3365 | GFP_KERNEL); |
3366 | cifs_strfromUCS_le(ses-> | |
3367 | serverNOS, | |
e89dc920 | 3368 | (__le16 *) |
1da177e4 LT |
3369 | bcc_ptr, |
3370 | len, | |
3371 | nls_codepage); | |
3372 | bcc_ptr += 2 * (len + 1); | |
3373 | ses->serverNOS[2 * len] = 0; | |
3374 | ses->serverNOS[1+(2*len)] = 0; | |
3375 | remaining_words -= len + 1; | |
3376 | if (remaining_words > 0) { | |
50c2f753 | 3377 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 3378 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ |
fb8c4b14 | 3379 | if (ses->serverDomain) |
a424f8bf | 3380 | kfree(ses->serverDomain); |
1da177e4 | 3381 | ses->serverDomain = |
e915fc49 | 3382 | kzalloc(2 * |
1da177e4 LT |
3383 | (len + |
3384 | 1), | |
3385 | GFP_KERNEL); | |
3386 | cifs_strfromUCS_le | |
3387 | (ses-> | |
3388 | serverDomain, | |
e89dc920 | 3389 | (__le16 *) |
1da177e4 LT |
3390 | bcc_ptr, len, |
3391 | nls_codepage); | |
3392 | bcc_ptr += | |
3393 | 2 * (len + 1); | |
3394 | ses-> | |
3395 | serverDomain[2 | |
3396 | * len] | |
3397 | = 0; | |
3398 | ses-> | |
3399 | serverDomain[1 | |
3400 | + | |
3401 | (2 | |
3402 | * | |
3403 | len)] | |
3404 | = 0; | |
3405 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 3406 | else { |
fb8c4b14 | 3407 | if (ses->serverDomain) |
a424f8bf | 3408 | kfree(ses->serverDomain); |
e915fc49 | 3409 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 3410 | } |
1da177e4 | 3411 | } else { /* no room so create dummy domain and NOS string */ |
fb8c4b14 | 3412 | if (ses->serverDomain) |
a424f8bf | 3413 | kfree(ses->serverDomain); |
e915fc49 | 3414 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 3415 | kfree(ses->serverNOS); |
e915fc49 | 3416 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3417 | } |
3418 | } else { /* ASCII */ | |
3419 | len = strnlen(bcc_ptr, 1024); | |
50c2f753 SF |
3420 | if (((long) bcc_ptr + len) - |
3421 | (long) pByteArea(smb_buffer_response) | |
63135e08 | 3422 | <= BCC(smb_buffer_response)) { |
fb8c4b14 | 3423 | if (ses->serverOS) |
a424f8bf | 3424 | kfree(ses->serverOS); |
77159b4d | 3425 | ses->serverOS = kzalloc(len + 1, GFP_KERNEL); |
1da177e4 LT |
3426 | strncpy(ses->serverOS,bcc_ptr, len); |
3427 | ||
3428 | bcc_ptr += len; | |
3429 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3430 | bcc_ptr++; | |
3431 | ||
3432 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3433 | kfree(ses->serverNOS); |
50c2f753 SF |
3434 | ses->serverNOS = kzalloc(len+1, |
3435 | GFP_KERNEL); | |
63135e08 SF |
3436 | strncpy(ses->serverNOS, |
3437 | bcc_ptr, len); | |
1da177e4 LT |
3438 | bcc_ptr += len; |
3439 | bcc_ptr[0] = 0; | |
3440 | bcc_ptr++; | |
3441 | ||
3442 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 3443 | if (ses->serverDomain) |
a424f8bf | 3444 | kfree(ses->serverDomain); |
63135e08 SF |
3445 | ses->serverDomain = |
3446 | kzalloc(len+1, | |
3447 | GFP_KERNEL); | |
3448 | strncpy(ses->serverDomain, | |
3449 | bcc_ptr, len); | |
1da177e4 LT |
3450 | bcc_ptr += len; |
3451 | bcc_ptr[0] = 0; | |
3452 | bcc_ptr++; | |
3453 | } else | |
6345a3a8 | 3454 | cFYI(1, ("field of length %d " |
63135e08 | 3455 | "extends beyond end of smb ", |
1da177e4 LT |
3456 | len)); |
3457 | } | |
3458 | } else { | |
6345a3a8 | 3459 | cERROR(1, ("Security Blob extends beyond end " |
63135e08 | 3460 | "of SMB")); |
1da177e4 LT |
3461 | } |
3462 | } else { | |
3463 | cERROR(1, ("No session structure passed in.")); | |
3464 | } | |
3465 | } else { | |
6345a3a8 | 3466 | cERROR(1, ("Invalid Word count %d: ", |
1da177e4 LT |
3467 | smb_buffer_response->WordCount)); |
3468 | rc = -EIO; | |
3469 | } | |
3470 | ||
a8a11d39 | 3471 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3472 | |
3473 | return rc; | |
3474 | } | |
3475 | ||
3476 | int | |
3477 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3478 | const char *tree, struct cifsTconInfo *tcon, | |
3479 | const struct nls_table *nls_codepage) | |
3480 | { | |
3481 | struct smb_hdr *smb_buffer; | |
3482 | struct smb_hdr *smb_buffer_response; | |
3483 | TCONX_REQ *pSMB; | |
3484 | TCONX_RSP *pSMBr; | |
3485 | unsigned char *bcc_ptr; | |
3486 | int rc = 0; | |
3487 | int length; | |
3488 | __u16 count; | |
3489 | ||
3490 | if (ses == NULL) | |
3491 | return -EIO; | |
3492 | ||
3493 | smb_buffer = cifs_buf_get(); | |
3494 | if (smb_buffer == NULL) { | |
3495 | return -ENOMEM; | |
3496 | } | |
3497 | smb_buffer_response = smb_buffer; | |
3498 | ||
3499 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3500 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3501 | |
3502 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3503 | smb_buffer->Uid = ses->Suid; |
3504 | pSMB = (TCONX_REQ *) smb_buffer; | |
3505 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3506 | ||
3507 | pSMB->AndXCommand = 0xFF; | |
3508 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3509 | bcc_ptr = &pSMB->Password[0]; |
fb8c4b14 | 3510 | if ((ses->server->secMode) & SECMODE_USER) { |
eeac8047 | 3511 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
7c7b25bc | 3512 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3513 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3514 | /* already aligned so no need to do it below */ |
eeac8047 | 3515 | } else { |
7c7b25bc | 3516 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3517 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3518 | specified as required (when that support is added to | |
3519 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3520 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3521 | by Samba (not sure whether other servers allow |
3522 | NTLMv2 password here) */ | |
7c7b25bc | 3523 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
50c2f753 | 3524 | if ((extended_security & CIFSSEC_MAY_LANMAN) && |
7c7b25bc SF |
3525 | (ses->server->secType == LANMAN)) |
3526 | calc_lanman_hash(ses, bcc_ptr); | |
3527 | else | |
3528 | #endif /* CIFS_WEAK_PW_HASH */ | |
eeac8047 SF |
3529 | SMBNTencrypt(ses->password, |
3530 | ses->server->cryptKey, | |
3531 | bcc_ptr); | |
3532 | ||
7c7b25bc | 3533 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
fb8c4b14 | 3534 | if (ses->capabilities & CAP_UNICODE) { |
7c7b25bc SF |
3535 | /* must align unicode strings */ |
3536 | *bcc_ptr = 0; /* null byte password */ | |
3537 | bcc_ptr++; | |
3538 | } | |
eeac8047 | 3539 | } |
1da177e4 | 3540 | |
50c2f753 | 3541 | if (ses->server->secMode & |
a878fb22 | 3542 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3543 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3544 | ||
3545 | if (ses->capabilities & CAP_STATUS32) { | |
3546 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3547 | } | |
3548 | if (ses->capabilities & CAP_DFS) { | |
3549 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3550 | } | |
3551 | if (ses->capabilities & CAP_UNICODE) { | |
3552 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3553 | length = | |
50c2f753 SF |
3554 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3555 | 6 /* max utf8 char length in bytes */ * | |
a878fb22 SF |
3556 | (/* server len*/ + 256 /* share len */), nls_codepage); |
3557 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3558 | bcc_ptr += 2; /* skip trailing null */ |
3559 | } else { /* ASCII */ | |
1da177e4 LT |
3560 | strcpy(bcc_ptr, tree); |
3561 | bcc_ptr += strlen(tree) + 1; | |
3562 | } | |
3563 | strcpy(bcc_ptr, "?????"); | |
3564 | bcc_ptr += strlen("?????"); | |
3565 | bcc_ptr += 1; | |
3566 | count = bcc_ptr - &pSMB->Password[0]; | |
3567 | pSMB->hdr.smb_buf_length += count; | |
3568 | pSMB->ByteCount = cpu_to_le16(count); | |
3569 | ||
133672ef SF |
3570 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, |
3571 | CIFS_STD_OP); | |
1da177e4 LT |
3572 | |
3573 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3574 | /* above now done in SendReceive */ | |
3575 | if ((rc == 0) && (tcon != NULL)) { | |
3576 | tcon->tidStatus = CifsGood; | |
3b795210 | 3577 | tcon->need_reconnect = false; |
1da177e4 LT |
3578 | tcon->tid = smb_buffer_response->Tid; |
3579 | bcc_ptr = pByteArea(smb_buffer_response); | |
3580 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
50c2f753 | 3581 | /* skip service field (NB: this field is always ASCII) */ |
7f8ed420 SF |
3582 | if (length == 3) { |
3583 | if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') && | |
3584 | (bcc_ptr[2] == 'C')) { | |
3585 | cFYI(1, ("IPC connection")); | |
3586 | tcon->ipc = 1; | |
3587 | } | |
3588 | } else if (length == 2) { | |
3589 | if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) { | |
3590 | /* the most common case */ | |
3591 | cFYI(1, ("disk share connection")); | |
3592 | } | |
3593 | } | |
50c2f753 | 3594 | bcc_ptr += length + 1; |
1da177e4 LT |
3595 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
3596 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3597 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3598 | if ((bcc_ptr + (2 * length)) - | |
3599 | pByteArea(smb_buffer_response) <= | |
3600 | BCC(smb_buffer_response)) { | |
f99d49ad | 3601 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3602 | tcon->nativeFileSystem = |
e915fc49 | 3603 | kzalloc(length + 2, GFP_KERNEL); |
88f370a6 SF |
3604 | if (tcon->nativeFileSystem) |
3605 | cifs_strfromUCS_le( | |
3606 | tcon->nativeFileSystem, | |
3607 | (__le16 *) bcc_ptr, | |
3608 | length, nls_codepage); | |
1da177e4 LT |
3609 | bcc_ptr += 2 * length; |
3610 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3611 | bcc_ptr[1] = 0; | |
3612 | bcc_ptr += 2; | |
3613 | } | |
50c2f753 | 3614 | /* else do not bother copying these information fields*/ |
1da177e4 LT |
3615 | } else { |
3616 | length = strnlen(bcc_ptr, 1024); | |
3617 | if ((bcc_ptr + length) - | |
3618 | pByteArea(smb_buffer_response) <= | |
3619 | BCC(smb_buffer_response)) { | |
f99d49ad | 3620 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3621 | tcon->nativeFileSystem = |
e915fc49 | 3622 | kzalloc(length + 1, GFP_KERNEL); |
88f370a6 SF |
3623 | if (tcon->nativeFileSystem) |
3624 | strncpy(tcon->nativeFileSystem, bcc_ptr, | |
3625 | length); | |
1da177e4 | 3626 | } |
50c2f753 | 3627 | /* else do not bother copying these information fields*/ |
1da177e4 | 3628 | } |
fb8c4b14 | 3629 | if ((smb_buffer_response->WordCount == 3) || |
1a4e15a0 SF |
3630 | (smb_buffer_response->WordCount == 7)) |
3631 | /* field is in same location */ | |
3979877e SF |
3632 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
3633 | else | |
3634 | tcon->Flags = 0; | |
1da177e4 LT |
3635 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3636 | } else if ((rc == 0) && tcon == NULL) { | |
50c2f753 | 3637 | /* all we need to save for IPC$ connection */ |
1da177e4 LT |
3638 | ses->ipc_tid = smb_buffer_response->Tid; |
3639 | } | |
3640 | ||
a8a11d39 | 3641 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3642 | return rc; |
3643 | } | |
3644 | ||
3645 | int | |
3646 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3647 | { | |
3648 | int rc = 0; | |
50c2f753 | 3649 | char *tmp; |
1da177e4 | 3650 | |
f1987b44 JL |
3651 | if (cifs_sb->tcon) |
3652 | cifs_put_tcon(cifs_sb->tcon); | |
50c2f753 | 3653 | |
1da177e4 | 3654 | cifs_sb->tcon = NULL; |
2fe87f02 SF |
3655 | tmp = cifs_sb->prepath; |
3656 | cifs_sb->prepathlen = 0; | |
3657 | cifs_sb->prepath = NULL; | |
3658 | kfree(tmp); | |
1da177e4 | 3659 | |
88e7d705 | 3660 | return rc; |
50c2f753 | 3661 | } |
1da177e4 LT |
3662 | |
3663 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
50c2f753 | 3664 | struct nls_table *nls_info) |
1da177e4 LT |
3665 | { |
3666 | int rc = 0; | |
7c7b25bc | 3667 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
4b18f2a9 | 3668 | bool ntlmv2_flag = false; |
ad009ac9 | 3669 | int first_time = 0; |
cb7691b6 | 3670 | struct TCP_Server_Info *server = pSesInfo->server; |
1da177e4 LT |
3671 | |
3672 | /* what if server changes its buffer size after dropping the session? */ | |
cb7691b6 | 3673 | if (server->maxBuf == 0) /* no need to send on reconnect */ { |
1da177e4 | 3674 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
cb7691b6 JL |
3675 | if (rc == -EAGAIN) { |
3676 | /* retry only once on 1st time connection */ | |
1da177e4 | 3677 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
50c2f753 | 3678 | if (rc == -EAGAIN) |
1da177e4 LT |
3679 | rc = -EHOSTDOWN; |
3680 | } | |
fb8c4b14 | 3681 | if (rc == 0) { |
1da177e4 | 3682 | spin_lock(&GlobalMid_Lock); |
cb7691b6 JL |
3683 | if (server->tcpStatus != CifsExiting) |
3684 | server->tcpStatus = CifsGood; | |
1da177e4 LT |
3685 | else |
3686 | rc = -EHOSTDOWN; | |
3687 | spin_unlock(&GlobalMid_Lock); | |
3688 | ||
3689 | } | |
ad009ac9 | 3690 | first_time = 1; |
1da177e4 | 3691 | } |
26b994fa SF |
3692 | |
3693 | if (rc) | |
3694 | goto ss_err_exit; | |
3695 | ||
3696 | pSesInfo->flags = 0; | |
cb7691b6 | 3697 | pSesInfo->capabilities = server->capabilities; |
26b994fa SF |
3698 | if (linuxExtEnabled == 0) |
3699 | pSesInfo->capabilities &= (~CAP_UNIX); | |
ad009ac9 | 3700 | /* pSesInfo->sequence_number = 0;*/ |
26b994fa | 3701 | cFYI(1, ("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", |
cb7691b6 JL |
3702 | server->secMode, server->capabilities, server->timeAdj)); |
3703 | ||
26b994fa SF |
3704 | if (experimEnabled < 2) |
3705 | rc = CIFS_SessSetup(xid, pSesInfo, first_time, nls_info); | |
3706 | else if (extended_security | |
3707 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
cb7691b6 | 3708 | && (server->secType == NTLMSSP)) { |
26b994fa SF |
3709 | rc = -EOPNOTSUPP; |
3710 | } else if (extended_security | |
3711 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
cb7691b6 | 3712 | && (server->secType == RawNTLMSSP)) { |
26b994fa SF |
3713 | cFYI(1, ("NTLMSSP sesssetup")); |
3714 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, pSesInfo, &ntlmv2_flag, | |
3715 | nls_info); | |
3716 | if (!rc) { | |
3717 | if (ntlmv2_flag) { | |
3718 | char *v2_response; | |
3719 | cFYI(1, ("more secure NTLM ver2 hash")); | |
3720 | if (CalcNTLMv2_partial_mac_key(pSesInfo, | |
3721 | nls_info)) { | |
3722 | rc = -ENOMEM; | |
3723 | goto ss_err_exit; | |
3724 | } else | |
3725 | v2_response = kmalloc(16 + 64 /* blob*/, | |
3726 | GFP_KERNEL); | |
3727 | if (v2_response) { | |
3728 | CalcNTLMv2_response(pSesInfo, | |
3729 | v2_response); | |
3730 | /* if (first_time) | |
3731 | cifs_calculate_ntlmv2_mac_key */ | |
3732 | kfree(v2_response); | |
1da177e4 | 3733 | /* BB Put dummy sig in SessSetup PDU? */ |
1da177e4 | 3734 | } else { |
26b994fa SF |
3735 | rc = -ENOMEM; |
3736 | goto ss_err_exit; | |
1da177e4 | 3737 | } |
26b994fa SF |
3738 | |
3739 | } else { | |
3740 | SMBNTencrypt(pSesInfo->password, | |
cb7691b6 | 3741 | server->cryptKey, |
26b994fa SF |
3742 | ntlm_session_key); |
3743 | ||
3744 | if (first_time) | |
3745 | cifs_calculate_mac_key( | |
cb7691b6 | 3746 | &server->mac_signing_key, |
26b994fa SF |
3747 | ntlm_session_key, |
3748 | pSesInfo->password); | |
3749 | } | |
1da177e4 LT |
3750 | /* for better security the weaker lanman hash not sent |
3751 | in AuthSessSetup so we no longer calculate it */ | |
3752 | ||
26b994fa SF |
3753 | rc = CIFSNTLMSSPAuthSessSetup(xid, pSesInfo, |
3754 | ntlm_session_key, | |
3755 | ntlmv2_flag, | |
3756 | nls_info); | |
3757 | } | |
3758 | } else { /* old style NTLM 0.12 session setup */ | |
cb7691b6 | 3759 | SMBNTencrypt(pSesInfo->password, server->cryptKey, |
26b994fa | 3760 | ntlm_session_key); |
1da177e4 | 3761 | |
26b994fa | 3762 | if (first_time) |
cb7691b6 JL |
3763 | cifs_calculate_mac_key(&server->mac_signing_key, |
3764 | ntlm_session_key, | |
3765 | pSesInfo->password); | |
ad009ac9 | 3766 | |
26b994fa SF |
3767 | rc = CIFSSessSetup(xid, pSesInfo, ntlm_session_key, nls_info); |
3768 | } | |
3769 | if (rc) { | |
3770 | cERROR(1, ("Send error in SessSetup = %d", rc)); | |
3771 | } else { | |
3772 | cFYI(1, ("CIFS Session Established successfully")); | |
469ee614 | 3773 | spin_lock(&GlobalMid_Lock); |
1da177e4 | 3774 | pSesInfo->status = CifsGood; |
3b795210 | 3775 | pSesInfo->need_reconnect = false; |
469ee614 | 3776 | spin_unlock(&GlobalMid_Lock); |
1da177e4 | 3777 | } |
26b994fa | 3778 | |
1da177e4 LT |
3779 | ss_err_exit: |
3780 | return rc; | |
3781 | } | |
3782 |