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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/connect.c | |
3 | * | |
366781c1 | 4 | * Copyright (C) International Business Machines Corp., 2002,2008 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * This library is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU Lesser General Public License as published | |
9 | * by the Free Software Foundation; either version 2.1 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This library is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
15 | * the GNU Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public License | |
18 | * along with this library; if not, write to the Free Software | |
fb8c4b14 | 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
1da177e4 LT |
20 | */ |
21 | #include <linux/fs.h> | |
22 | #include <linux/net.h> | |
23 | #include <linux/string.h> | |
24 | #include <linux/list.h> | |
25 | #include <linux/wait.h> | |
26 | #include <linux/ipv6.h> | |
27 | #include <linux/pagemap.h> | |
28 | #include <linux/ctype.h> | |
29 | #include <linux/utsname.h> | |
30 | #include <linux/mempool.h> | |
b8643e1b | 31 | #include <linux/delay.h> |
f191401f | 32 | #include <linux/completion.h> |
aaf737ad | 33 | #include <linux/kthread.h> |
0ae0efad | 34 | #include <linux/pagevec.h> |
7dfb7103 | 35 | #include <linux/freezer.h> |
1da177e4 LT |
36 | #include <asm/uaccess.h> |
37 | #include <asm/processor.h> | |
38 | #include "cifspdu.h" | |
39 | #include "cifsglob.h" | |
40 | #include "cifsproto.h" | |
41 | #include "cifs_unicode.h" | |
42 | #include "cifs_debug.h" | |
43 | #include "cifs_fs_sb.h" | |
44 | #include "ntlmssp.h" | |
45 | #include "nterr.h" | |
46 | #include "rfc1002pdu.h" | |
a2653eba | 47 | #include "cn_cifs.h" |
1da177e4 LT |
48 | |
49 | #define CIFS_PORT 445 | |
50 | #define RFC1001_PORT 139 | |
51 | ||
1da177e4 LT |
52 | extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, |
53 | unsigned char *p24); | |
54 | ||
55 | extern mempool_t *cifs_req_poolp; | |
56 | ||
57 | struct smb_vol { | |
58 | char *username; | |
59 | char *password; | |
60 | char *domainname; | |
61 | char *UNC; | |
62 | char *UNCip; | |
95b1cb90 | 63 | char *in6_addr; /* ipv6 address as human readable form of in6_addr */ |
1da177e4 LT |
64 | char *iocharset; /* local code page for mapping to and from Unicode */ |
65 | char source_rfc1001_name[16]; /* netbios name of client */ | |
a10faeb2 | 66 | char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */ |
1da177e4 LT |
67 | uid_t linux_uid; |
68 | gid_t linux_gid; | |
69 | mode_t file_mode; | |
70 | mode_t dir_mode; | |
189acaae | 71 | unsigned secFlg; |
4b18f2a9 SF |
72 | bool rw:1; |
73 | bool retry:1; | |
74 | bool intr:1; | |
75 | bool setuids:1; | |
76 | bool override_uid:1; | |
77 | bool override_gid:1; | |
d0a9c078 | 78 | bool dynperm:1; |
4b18f2a9 SF |
79 | bool noperm:1; |
80 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
81 | bool cifs_acl:1; | |
82 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ | |
83 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
84 | bool direct_io:1; | |
95b1cb90 SF |
85 | bool remap:1; /* set to remap seven reserved chars in filenames */ |
86 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ | |
4b18f2a9 SF |
87 | bool no_linux_ext:1; |
88 | bool sfu_emul:1; | |
95b1cb90 SF |
89 | bool nullauth:1; /* attempt to authenticate with null user */ |
90 | bool nocase:1; /* request case insensitive filenames */ | |
91 | bool nobrl:1; /* disable sending byte range locks to srv */ | |
13a6e42a | 92 | bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ |
95b1cb90 | 93 | bool seal:1; /* request transport encryption on share */ |
84210e91 SF |
94 | bool nodfs:1; /* Do not request DFS, even if available */ |
95 | bool local_lease:1; /* check leases only on local system, not remote */ | |
edf1ae40 SF |
96 | bool noblocksnd:1; |
97 | bool noautotune:1; | |
1da177e4 LT |
98 | unsigned int rsize; |
99 | unsigned int wsize; | |
100 | unsigned int sockopt; | |
101 | unsigned short int port; | |
fb8c4b14 | 102 | char *prepath; |
1da177e4 LT |
103 | }; |
104 | ||
bcf4b106 | 105 | static int ipv4_connect(struct TCP_Server_Info *server); |
d5c5605c | 106 | static int ipv6_connect(struct TCP_Server_Info *server); |
1da177e4 | 107 | |
d5c5605c JL |
108 | /* |
109 | * cifs tcp session reconnection | |
110 | * | |
111 | * mark tcp session as reconnecting so temporarily locked | |
112 | * mark all smb sessions as reconnecting for tcp session | |
113 | * reconnect tcp session | |
114 | * wake up waiters on reconnection? - (not needed currently) | |
115 | */ | |
2cd646a2 | 116 | static int |
1da177e4 LT |
117 | cifs_reconnect(struct TCP_Server_Info *server) |
118 | { | |
119 | int rc = 0; | |
f1987b44 | 120 | struct list_head *tmp, *tmp2; |
1da177e4 LT |
121 | struct cifsSesInfo *ses; |
122 | struct cifsTconInfo *tcon; | |
fb8c4b14 | 123 | struct mid_q_entry *mid_entry; |
50c2f753 | 124 | |
1da177e4 | 125 | spin_lock(&GlobalMid_Lock); |
469ee614 | 126 | if (server->tcpStatus == CifsExiting) { |
fb8c4b14 | 127 | /* the demux thread will exit normally |
1da177e4 LT |
128 | next time through the loop */ |
129 | spin_unlock(&GlobalMid_Lock); | |
130 | return rc; | |
131 | } else | |
132 | server->tcpStatus = CifsNeedReconnect; | |
133 | spin_unlock(&GlobalMid_Lock); | |
134 | server->maxBuf = 0; | |
135 | ||
e4eb295d | 136 | cFYI(1, ("Reconnecting tcp session")); |
1da177e4 LT |
137 | |
138 | /* before reconnecting the tcp session, mark the smb session (uid) | |
139 | and the tid bad so they are not used until reconnected */ | |
14fbf50d JL |
140 | read_lock(&cifs_tcp_ses_lock); |
141 | list_for_each(tmp, &server->smb_ses_list) { | |
142 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); | |
143 | ses->need_reconnect = true; | |
144 | ses->ipc_tid = 0; | |
f1987b44 JL |
145 | list_for_each(tmp2, &ses->tcon_list) { |
146 | tcon = list_entry(tmp2, struct cifsTconInfo, tcon_list); | |
3b795210 | 147 | tcon->need_reconnect = true; |
1da177e4 | 148 | } |
1da177e4 | 149 | } |
f1987b44 | 150 | read_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 151 | /* do not want to be sending data on a socket we are freeing */ |
72ca545b | 152 | mutex_lock(&server->srv_mutex); |
fb8c4b14 | 153 | if (server->ssocket) { |
467a8f8d | 154 | cFYI(1, ("State: 0x%x Flags: 0x%lx", server->ssocket->state, |
1da177e4 | 155 | server->ssocket->flags)); |
91cf45f0 | 156 | kernel_sock_shutdown(server->ssocket, SHUT_WR); |
fb8c4b14 | 157 | cFYI(1, ("Post shutdown state: 0x%x Flags: 0x%lx", |
467a8f8d | 158 | server->ssocket->state, |
1da177e4 LT |
159 | server->ssocket->flags)); |
160 | sock_release(server->ssocket); | |
161 | server->ssocket = NULL; | |
162 | } | |
163 | ||
164 | spin_lock(&GlobalMid_Lock); | |
165 | list_for_each(tmp, &server->pending_mid_q) { | |
166 | mid_entry = list_entry(tmp, struct | |
167 | mid_q_entry, | |
168 | qhead); | |
ad8b15f0 | 169 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { |
09d1db5c SF |
170 | /* Mark other intransit requests as needing |
171 | retry so we do not immediately mark the | |
172 | session bad again (ie after we reconnect | |
173 | below) as they timeout too */ | |
ad8b15f0 | 174 | mid_entry->midState = MID_RETRY_NEEDED; |
1da177e4 LT |
175 | } |
176 | } | |
177 | spin_unlock(&GlobalMid_Lock); | |
72ca545b | 178 | mutex_unlock(&server->srv_mutex); |
1da177e4 | 179 | |
469ee614 JL |
180 | while ((server->tcpStatus != CifsExiting) && |
181 | (server->tcpStatus != CifsGood)) { | |
6c3d8909 | 182 | try_to_freeze(); |
bcf4b106 | 183 | if (server->addr.sockAddr6.sin6_family == AF_INET6) |
d5c5605c | 184 | rc = ipv6_connect(server); |
bcf4b106 JL |
185 | else |
186 | rc = ipv4_connect(server); | |
fb8c4b14 SF |
187 | if (rc) { |
188 | cFYI(1, ("reconnect error %d", rc)); | |
0cb766ae | 189 | msleep(3000); |
1da177e4 LT |
190 | } else { |
191 | atomic_inc(&tcpSesReconnectCount); | |
192 | spin_lock(&GlobalMid_Lock); | |
469ee614 | 193 | if (server->tcpStatus != CifsExiting) |
1da177e4 | 194 | server->tcpStatus = CifsGood; |
ad009ac9 | 195 | server->sequence_number = 0; |
fb8c4b14 | 196 | spin_unlock(&GlobalMid_Lock); |
1da177e4 LT |
197 | /* atomic_set(&server->inFlight,0);*/ |
198 | wake_up(&server->response_q); | |
199 | } | |
200 | } | |
201 | return rc; | |
202 | } | |
203 | ||
fb8c4b14 | 204 | /* |
e4eb295d SF |
205 | return codes: |
206 | 0 not a transact2, or all data present | |
207 | >0 transact2 with that much data missing | |
208 | -EINVAL = invalid transact2 | |
209 | ||
210 | */ | |
fb8c4b14 | 211 | static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) |
e4eb295d | 212 | { |
fb8c4b14 SF |
213 | struct smb_t2_rsp *pSMBt; |
214 | int total_data_size; | |
e4eb295d SF |
215 | int data_in_this_rsp; |
216 | int remaining; | |
217 | ||
fb8c4b14 | 218 | if (pSMB->Command != SMB_COM_TRANSACTION2) |
e4eb295d SF |
219 | return 0; |
220 | ||
fb8c4b14 SF |
221 | /* check for plausible wct, bcc and t2 data and parm sizes */ |
222 | /* check for parm and data offset going beyond end of smb */ | |
223 | if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
467a8f8d | 224 | cFYI(1, ("invalid transact2 word count")); |
e4eb295d SF |
225 | return -EINVAL; |
226 | } | |
227 | ||
228 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
229 | ||
230 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
231 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
232 | ||
233 | remaining = total_data_size - data_in_this_rsp; | |
234 | ||
fb8c4b14 | 235 | if (remaining == 0) |
e4eb295d | 236 | return 0; |
fb8c4b14 | 237 | else if (remaining < 0) { |
467a8f8d | 238 | cFYI(1, ("total data %d smaller than data in frame %d", |
e4eb295d SF |
239 | total_data_size, data_in_this_rsp)); |
240 | return -EINVAL; | |
241 | } else { | |
467a8f8d | 242 | cFYI(1, ("missing %d bytes from transact2, check next response", |
e4eb295d | 243 | remaining)); |
fb8c4b14 SF |
244 | if (total_data_size > maxBufSize) { |
245 | cERROR(1, ("TotalDataSize %d is over maximum buffer %d", | |
246 | total_data_size, maxBufSize)); | |
247 | return -EINVAL; | |
e4eb295d SF |
248 | } |
249 | return remaining; | |
250 | } | |
251 | } | |
252 | ||
fb8c4b14 | 253 | static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) |
e4eb295d SF |
254 | { |
255 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
256 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
257 | int total_data_size; | |
258 | int total_in_buf; | |
259 | int remaining; | |
260 | int total_in_buf2; | |
fb8c4b14 SF |
261 | char *data_area_of_target; |
262 | char *data_area_of_buf2; | |
e4eb295d SF |
263 | __u16 byte_count; |
264 | ||
265 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
266 | ||
fb8c4b14 | 267 | if (total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { |
63135e08 | 268 | cFYI(1, ("total data size of primary and secondary t2 differ")); |
e4eb295d SF |
269 | } |
270 | ||
271 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
272 | ||
273 | remaining = total_data_size - total_in_buf; | |
50c2f753 | 274 | |
fb8c4b14 | 275 | if (remaining < 0) |
e4eb295d SF |
276 | return -EINVAL; |
277 | ||
fb8c4b14 | 278 | if (remaining == 0) /* nothing to do, ignore */ |
e4eb295d | 279 | return 0; |
50c2f753 | 280 | |
e4eb295d | 281 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); |
fb8c4b14 | 282 | if (remaining < total_in_buf2) { |
467a8f8d | 283 | cFYI(1, ("transact2 2nd response contains too much data")); |
e4eb295d SF |
284 | } |
285 | ||
286 | /* find end of first SMB data area */ | |
fb8c4b14 | 287 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + |
e4eb295d SF |
288 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); |
289 | /* validate target area */ | |
290 | ||
291 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
fb8c4b14 | 292 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); |
e4eb295d SF |
293 | |
294 | data_area_of_target += total_in_buf; | |
295 | ||
296 | /* copy second buffer into end of first buffer */ | |
fb8c4b14 | 297 | memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); |
e4eb295d SF |
298 | total_in_buf += total_in_buf2; |
299 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
300 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
301 | byte_count += total_in_buf2; | |
302 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
303 | ||
70ca734a | 304 | byte_count = pTargetSMB->smb_buf_length; |
e4eb295d SF |
305 | byte_count += total_in_buf2; |
306 | ||
307 | /* BB also add check that we are not beyond maximum buffer size */ | |
50c2f753 | 308 | |
70ca734a | 309 | pTargetSMB->smb_buf_length = byte_count; |
e4eb295d | 310 | |
fb8c4b14 | 311 | if (remaining == total_in_buf2) { |
467a8f8d | 312 | cFYI(1, ("found the last secondary response")); |
e4eb295d SF |
313 | return 0; /* we are done */ |
314 | } else /* more responses to go */ | |
315 | return 1; | |
316 | ||
317 | } | |
318 | ||
1da177e4 LT |
319 | static int |
320 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
321 | { | |
322 | int length; | |
323 | unsigned int pdu_length, total_read; | |
324 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
325 | struct smb_hdr *bigbuf = NULL; |
326 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
327 | struct msghdr smb_msg; |
328 | struct kvec iov; | |
329 | struct socket *csocket = server->ssocket; | |
330 | struct list_head *tmp; | |
331 | struct cifsSesInfo *ses; | |
332 | struct task_struct *task_to_wake = NULL; | |
333 | struct mid_q_entry *mid_entry; | |
70ca734a | 334 | char temp; |
4b18f2a9 SF |
335 | bool isLargeBuf = false; |
336 | bool isMultiRsp; | |
e4eb295d | 337 | int reconnect; |
1da177e4 | 338 | |
1da177e4 | 339 | current->flags |= PF_MEMALLOC; |
ba25f9dc | 340 | cFYI(1, ("Demultiplex PID: %d", task_pid_nr(current))); |
93d0ec85 JL |
341 | |
342 | length = atomic_inc_return(&tcpSesAllocCount); | |
343 | if (length > 1) | |
26f57364 SF |
344 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, |
345 | GFP_KERNEL); | |
1da177e4 | 346 | |
83144186 | 347 | set_freezable(); |
469ee614 | 348 | while (server->tcpStatus != CifsExiting) { |
ede1327e SF |
349 | if (try_to_freeze()) |
350 | continue; | |
b8643e1b SF |
351 | if (bigbuf == NULL) { |
352 | bigbuf = cifs_buf_get(); | |
0fd1ffe0 PM |
353 | if (!bigbuf) { |
354 | cERROR(1, ("No memory for large SMB response")); | |
b8643e1b SF |
355 | msleep(3000); |
356 | /* retry will check if exiting */ | |
357 | continue; | |
358 | } | |
0fd1ffe0 PM |
359 | } else if (isLargeBuf) { |
360 | /* we are reusing a dirty large buf, clear its start */ | |
26f57364 | 361 | memset(bigbuf, 0, sizeof(struct smb_hdr)); |
1da177e4 | 362 | } |
b8643e1b SF |
363 | |
364 | if (smallbuf == NULL) { | |
365 | smallbuf = cifs_small_buf_get(); | |
0fd1ffe0 PM |
366 | if (!smallbuf) { |
367 | cERROR(1, ("No memory for SMB response")); | |
b8643e1b SF |
368 | msleep(1000); |
369 | /* retry will check if exiting */ | |
370 | continue; | |
371 | } | |
372 | /* beginning of smb buffer is cleared in our buf_get */ | |
373 | } else /* if existing small buf clear beginning */ | |
26f57364 | 374 | memset(smallbuf, 0, sizeof(struct smb_hdr)); |
b8643e1b | 375 | |
4b18f2a9 SF |
376 | isLargeBuf = false; |
377 | isMultiRsp = false; | |
b8643e1b | 378 | smb_buffer = smallbuf; |
1da177e4 LT |
379 | iov.iov_base = smb_buffer; |
380 | iov.iov_len = 4; | |
381 | smb_msg.msg_control = NULL; | |
382 | smb_msg.msg_controllen = 0; | |
f01d5e14 SF |
383 | pdu_length = 4; /* enough to get RFC1001 header */ |
384 | incomplete_rcv: | |
1da177e4 LT |
385 | length = |
386 | kernel_recvmsg(csocket, &smb_msg, | |
f01d5e14 | 387 | &iov, 1, pdu_length, 0 /* BB other flags? */); |
1da177e4 | 388 | |
469ee614 | 389 | if (server->tcpStatus == CifsExiting) { |
1da177e4 LT |
390 | break; |
391 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
0fd1ffe0 | 392 | cFYI(1, ("Reconnect after server stopped responding")); |
1da177e4 | 393 | cifs_reconnect(server); |
0fd1ffe0 | 394 | cFYI(1, ("call to reconnect done")); |
1da177e4 LT |
395 | csocket = server->ssocket; |
396 | continue; | |
397 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 398 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
399 | allowing socket to clear and app threads to set |
400 | tcpStatus CifsNeedReconnect if server hung */ | |
c527c8a7 SF |
401 | if (pdu_length < 4) { |
402 | iov.iov_base = (4 - pdu_length) + | |
403 | (char *)smb_buffer; | |
404 | iov.iov_len = pdu_length; | |
405 | smb_msg.msg_control = NULL; | |
406 | smb_msg.msg_controllen = 0; | |
c18c732e | 407 | goto incomplete_rcv; |
c527c8a7 | 408 | } else |
c18c732e | 409 | continue; |
1da177e4 | 410 | } else if (length <= 0) { |
0fd1ffe0 PM |
411 | if (server->tcpStatus == CifsNew) { |
412 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
413 | /* some servers kill the TCP session rather than |
414 | returning an SMB negprot error, in which | |
415 | case reconnecting here is not going to help, | |
416 | and so simply return error to mount */ | |
1da177e4 LT |
417 | break; |
418 | } | |
0fd1ffe0 | 419 | if (!try_to_freeze() && (length == -EINTR)) { |
467a8f8d | 420 | cFYI(1, ("cifsd thread killed")); |
1da177e4 LT |
421 | break; |
422 | } | |
467a8f8d | 423 | cFYI(1, ("Reconnect after unexpected peek error %d", |
57337e42 | 424 | length)); |
1da177e4 LT |
425 | cifs_reconnect(server); |
426 | csocket = server->ssocket; | |
427 | wake_up(&server->response_q); | |
428 | continue; | |
2a974680 PT |
429 | } else if (length < pdu_length) { |
430 | cFYI(1, ("requested %d bytes but only got %d bytes", | |
431 | pdu_length, length)); | |
f01d5e14 | 432 | pdu_length -= length; |
f01d5e14 SF |
433 | msleep(1); |
434 | goto incomplete_rcv; | |
46810cbf | 435 | } |
1da177e4 | 436 | |
70ca734a SF |
437 | /* The right amount was read from socket - 4 bytes */ |
438 | /* so we can now interpret the length field */ | |
46810cbf | 439 | |
70ca734a SF |
440 | /* the first byte big endian of the length field, |
441 | is actually not part of the length but the type | |
442 | with the most common, zero, as regular data */ | |
443 | temp = *((char *) smb_buffer); | |
46810cbf | 444 | |
fb8c4b14 | 445 | /* Note that FC 1001 length is big endian on the wire, |
70ca734a SF |
446 | but we convert it here so it is always manipulated |
447 | as host byte order */ | |
5ca33c6a | 448 | pdu_length = be32_to_cpu((__force __be32)smb_buffer->smb_buf_length); |
70ca734a SF |
449 | smb_buffer->smb_buf_length = pdu_length; |
450 | ||
467a8f8d | 451 | cFYI(1, ("rfc1002 length 0x%x", pdu_length+4)); |
46810cbf | 452 | |
70ca734a | 453 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
fb8c4b14 | 454 | continue; |
70ca734a | 455 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
467a8f8d | 456 | cFYI(1, ("Good RFC 1002 session rsp")); |
e4eb295d | 457 | continue; |
70ca734a | 458 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
fb8c4b14 | 459 | /* we get this from Windows 98 instead of |
46810cbf | 460 | an error on SMB negprot response */ |
fb8c4b14 | 461 | cFYI(1, ("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 462 | pdu_length)); |
fb8c4b14 SF |
463 | if (server->tcpStatus == CifsNew) { |
464 | /* if nack on negprot (rather than | |
46810cbf SF |
465 | ret of smb negprot error) reconnecting |
466 | not going to help, ret error to mount */ | |
467 | break; | |
468 | } else { | |
469 | /* give server a second to | |
470 | clean up before reconnect attempt */ | |
471 | msleep(1000); | |
472 | /* always try 445 first on reconnect | |
473 | since we get NACK on some if we ever | |
fb8c4b14 | 474 | connected to port 139 (the NACK is |
46810cbf SF |
475 | since we do not begin with RFC1001 |
476 | session initialize frame) */ | |
fb8c4b14 | 477 | server->addr.sockAddr.sin_port = |
46810cbf | 478 | htons(CIFS_PORT); |
1da177e4 LT |
479 | cifs_reconnect(server); |
480 | csocket = server->ssocket; | |
46810cbf | 481 | wake_up(&server->response_q); |
1da177e4 | 482 | continue; |
46810cbf | 483 | } |
70ca734a | 484 | } else if (temp != (char) 0) { |
fb8c4b14 | 485 | cERROR(1, ("Unknown RFC 1002 frame")); |
70ca734a SF |
486 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
487 | length); | |
46810cbf SF |
488 | cifs_reconnect(server); |
489 | csocket = server->ssocket; | |
490 | continue; | |
e4eb295d SF |
491 | } |
492 | ||
493 | /* else we have an SMB response */ | |
fb8c4b14 | 494 | if ((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || |
26f57364 | 495 | (pdu_length < sizeof(struct smb_hdr) - 1 - 4)) { |
e4eb295d | 496 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 497 | length, pdu_length+4)); |
e4eb295d SF |
498 | cifs_reconnect(server); |
499 | csocket = server->ssocket; | |
500 | wake_up(&server->response_q); | |
501 | continue; | |
fb8c4b14 | 502 | } |
e4eb295d SF |
503 | |
504 | /* else length ok */ | |
505 | reconnect = 0; | |
506 | ||
fb8c4b14 | 507 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
4b18f2a9 | 508 | isLargeBuf = true; |
e4eb295d SF |
509 | memcpy(bigbuf, smallbuf, 4); |
510 | smb_buffer = bigbuf; | |
511 | } | |
512 | length = 0; | |
513 | iov.iov_base = 4 + (char *)smb_buffer; | |
514 | iov.iov_len = pdu_length; | |
fb8c4b14 | 515 | for (total_read = 0; total_read < pdu_length; |
e4eb295d SF |
516 | total_read += length) { |
517 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
518 | pdu_length - total_read, 0); | |
469ee614 | 519 | if ((server->tcpStatus == CifsExiting) || |
e4eb295d SF |
520 | (length == -EINTR)) { |
521 | /* then will exit */ | |
522 | reconnect = 2; | |
523 | break; | |
524 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
525 | cifs_reconnect(server); |
526 | csocket = server->ssocket; | |
fb8c4b14 | 527 | /* Reconnect wakes up rspns q */ |
e4eb295d SF |
528 | /* Now we will reread sock */ |
529 | reconnect = 1; | |
530 | break; | |
fb8c4b14 | 531 | } else if ((length == -ERESTARTSYS) || |
e4eb295d SF |
532 | (length == -EAGAIN)) { |
533 | msleep(1); /* minimum sleep to prevent looping, | |
fb8c4b14 | 534 | allowing socket to clear and app |
e4eb295d SF |
535 | threads to set tcpStatus |
536 | CifsNeedReconnect if server hung*/ | |
c18c732e | 537 | length = 0; |
46810cbf | 538 | continue; |
e4eb295d | 539 | } else if (length <= 0) { |
fb8c4b14 | 540 | cERROR(1, ("Received no data, expecting %d", |
e4eb295d SF |
541 | pdu_length - total_read)); |
542 | cifs_reconnect(server); | |
543 | csocket = server->ssocket; | |
544 | reconnect = 1; | |
545 | break; | |
46810cbf | 546 | } |
e4eb295d | 547 | } |
fb8c4b14 | 548 | if (reconnect == 2) |
e4eb295d | 549 | break; |
fb8c4b14 | 550 | else if (reconnect == 1) |
e4eb295d | 551 | continue; |
1da177e4 | 552 | |
e4eb295d | 553 | length += 4; /* account for rfc1002 hdr */ |
50c2f753 | 554 | |
09d1db5c | 555 | |
e4eb295d | 556 | dump_smb(smb_buffer, length); |
184ed211 | 557 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 558 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
559 | continue; |
560 | } | |
1da177e4 | 561 | |
e4eb295d SF |
562 | |
563 | task_to_wake = NULL; | |
564 | spin_lock(&GlobalMid_Lock); | |
565 | list_for_each(tmp, &server->pending_mid_q) { | |
566 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
567 | ||
50c2f753 | 568 | if ((mid_entry->mid == smb_buffer->Mid) && |
e4eb295d SF |
569 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && |
570 | (mid_entry->command == smb_buffer->Command)) { | |
fb8c4b14 | 571 | if (check2ndT2(smb_buffer,server->maxBuf) > 0) { |
e4eb295d | 572 | /* We have a multipart transact2 resp */ |
4b18f2a9 | 573 | isMultiRsp = true; |
fb8c4b14 | 574 | if (mid_entry->resp_buf) { |
e4eb295d | 575 | /* merge response - fix up 1st*/ |
50c2f753 | 576 | if (coalesce_t2(smb_buffer, |
e4eb295d | 577 | mid_entry->resp_buf)) { |
4b18f2a9 SF |
578 | mid_entry->multiRsp = |
579 | true; | |
e4eb295d SF |
580 | break; |
581 | } else { | |
582 | /* all parts received */ | |
4b18f2a9 SF |
583 | mid_entry->multiEnd = |
584 | true; | |
50c2f753 | 585 | goto multi_t2_fnd; |
e4eb295d SF |
586 | } |
587 | } else { | |
fb8c4b14 | 588 | if (!isLargeBuf) { |
e4eb295d SF |
589 | cERROR(1,("1st trans2 resp needs bigbuf")); |
590 | /* BB maybe we can fix this up, switch | |
50c2f753 | 591 | to already allocated large buffer? */ |
e4eb295d | 592 | } else { |
cd63499c | 593 | /* Have first buffer */ |
e4eb295d SF |
594 | mid_entry->resp_buf = |
595 | smb_buffer; | |
4b18f2a9 SF |
596 | mid_entry->largeBuf = |
597 | true; | |
e4eb295d SF |
598 | bigbuf = NULL; |
599 | } | |
600 | } | |
601 | break; | |
50c2f753 | 602 | } |
e4eb295d | 603 | mid_entry->resp_buf = smb_buffer; |
4b18f2a9 | 604 | mid_entry->largeBuf = isLargeBuf; |
e4eb295d SF |
605 | multi_t2_fnd: |
606 | task_to_wake = mid_entry->tsk; | |
607 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
608 | #ifdef CONFIG_CIFS_STATS2 |
609 | mid_entry->when_received = jiffies; | |
610 | #endif | |
3a5ff61c SF |
611 | /* so we do not time out requests to server |
612 | which is still responding (since server could | |
613 | be busy but not dead) */ | |
614 | server->lstrp = jiffies; | |
e4eb295d | 615 | break; |
46810cbf | 616 | } |
1da177e4 | 617 | } |
e4eb295d SF |
618 | spin_unlock(&GlobalMid_Lock); |
619 | if (task_to_wake) { | |
cd63499c | 620 | /* Was previous buf put in mpx struct for multi-rsp? */ |
fb8c4b14 | 621 | if (!isMultiRsp) { |
cd63499c | 622 | /* smb buffer will be freed by user thread */ |
26f57364 | 623 | if (isLargeBuf) |
cd63499c | 624 | bigbuf = NULL; |
26f57364 | 625 | else |
cd63499c SF |
626 | smallbuf = NULL; |
627 | } | |
e4eb295d | 628 | wake_up_process(task_to_wake); |
4b18f2a9 SF |
629 | } else if (!is_valid_oplock_break(smb_buffer, server) && |
630 | !isMultiRsp) { | |
50c2f753 SF |
631 | cERROR(1, ("No task to wake, unknown frame received! " |
632 | "NumMids %d", midCount.counter)); | |
633 | cifs_dump_mem("Received Data is: ", (char *)smb_buffer, | |
70ca734a | 634 | sizeof(struct smb_hdr)); |
3979877e SF |
635 | #ifdef CONFIG_CIFS_DEBUG2 |
636 | cifs_dump_detail(smb_buffer); | |
637 | cifs_dump_mids(server); | |
638 | #endif /* CIFS_DEBUG2 */ | |
50c2f753 | 639 | |
e4eb295d SF |
640 | } |
641 | } /* end while !EXITING */ | |
642 | ||
e7ddee90 JL |
643 | /* take it off the list, if it's not already */ |
644 | write_lock(&cifs_tcp_ses_lock); | |
645 | list_del_init(&server->tcp_ses_list); | |
646 | write_unlock(&cifs_tcp_ses_lock); | |
647 | ||
1da177e4 LT |
648 | spin_lock(&GlobalMid_Lock); |
649 | server->tcpStatus = CifsExiting; | |
e691b9d1 | 650 | spin_unlock(&GlobalMid_Lock); |
dbdbb876 | 651 | wake_up_all(&server->response_q); |
e691b9d1 | 652 | |
31ca3bc3 SF |
653 | /* check if we have blocked requests that need to free */ |
654 | /* Note that cifs_max_pending is normally 50, but | |
655 | can be set at module install time to as little as two */ | |
e691b9d1 | 656 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 | 657 | if (atomic_read(&server->inFlight) >= cifs_max_pending) |
31ca3bc3 SF |
658 | atomic_set(&server->inFlight, cifs_max_pending - 1); |
659 | /* We do not want to set the max_pending too low or we | |
660 | could end up with the counter going negative */ | |
1da177e4 | 661 | spin_unlock(&GlobalMid_Lock); |
50c2f753 | 662 | /* Although there should not be any requests blocked on |
1da177e4 | 663 | this queue it can not hurt to be paranoid and try to wake up requests |
09d1db5c | 664 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
665 | to the same server - they now will see the session is in exit state |
666 | and get out of SendReceive. */ | |
667 | wake_up_all(&server->request_q); | |
668 | /* give those requests time to exit */ | |
b8643e1b | 669 | msleep(125); |
50c2f753 | 670 | |
fb8c4b14 | 671 | if (server->ssocket) { |
1da177e4 LT |
672 | sock_release(csocket); |
673 | server->ssocket = NULL; | |
674 | } | |
b8643e1b | 675 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
a8a11d39 MK |
676 | cifs_buf_release(bigbuf); |
677 | if (smallbuf) /* no sense logging a debug message if NULL */ | |
b8643e1b | 678 | cifs_small_buf_release(smallbuf); |
1da177e4 | 679 | |
14fbf50d JL |
680 | /* |
681 | * BB: we shouldn't have to do any of this. It shouldn't be | |
682 | * possible to exit from the thread with active SMB sessions | |
683 | */ | |
684 | read_lock(&cifs_tcp_ses_lock); | |
1da177e4 | 685 | if (list_empty(&server->pending_mid_q)) { |
09d1db5c SF |
686 | /* loop through server session structures attached to this and |
687 | mark them dead */ | |
14fbf50d JL |
688 | list_for_each(tmp, &server->smb_ses_list) { |
689 | ses = list_entry(tmp, struct cifsSesInfo, | |
690 | smb_ses_list); | |
691 | ses->status = CifsExiting; | |
692 | ses->server = NULL; | |
1da177e4 | 693 | } |
14fbf50d | 694 | read_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 695 | } else { |
31ca3bc3 SF |
696 | /* although we can not zero the server struct pointer yet, |
697 | since there are active requests which may depnd on them, | |
698 | mark the corresponding SMB sessions as exiting too */ | |
14fbf50d | 699 | list_for_each(tmp, &server->smb_ses_list) { |
31ca3bc3 | 700 | ses = list_entry(tmp, struct cifsSesInfo, |
14fbf50d JL |
701 | smb_ses_list); |
702 | ses->status = CifsExiting; | |
31ca3bc3 SF |
703 | } |
704 | ||
1da177e4 LT |
705 | spin_lock(&GlobalMid_Lock); |
706 | list_for_each(tmp, &server->pending_mid_q) { | |
707 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
708 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
50c2f753 SF |
709 | cFYI(1, ("Clearing Mid 0x%x - waking up ", |
710 | mid_entry->mid)); | |
1da177e4 | 711 | task_to_wake = mid_entry->tsk; |
26f57364 | 712 | if (task_to_wake) |
1da177e4 | 713 | wake_up_process(task_to_wake); |
1da177e4 LT |
714 | } |
715 | } | |
716 | spin_unlock(&GlobalMid_Lock); | |
14fbf50d | 717 | read_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 718 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 719 | msleep(125); |
1da177e4 LT |
720 | } |
721 | ||
f191401f | 722 | if (!list_empty(&server->pending_mid_q)) { |
50c2f753 | 723 | /* mpx threads have not exited yet give them |
1da177e4 | 724 | at least the smb send timeout time for long ops */ |
31ca3bc3 SF |
725 | /* due to delays on oplock break requests, we need |
726 | to wait at least 45 seconds before giving up | |
727 | on a request getting a response and going ahead | |
728 | and killing cifsd */ | |
1da177e4 | 729 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 730 | msleep(46000); |
1da177e4 LT |
731 | /* if threads still have not exited they are probably never |
732 | coming home not much else we can do but free the memory */ | |
733 | } | |
1da177e4 | 734 | |
31ca3bc3 SF |
735 | /* last chance to mark ses pointers invalid |
736 | if there are any pointing to this (e.g | |
50c2f753 | 737 | if a crazy root user tried to kill cifsd |
31ca3bc3 | 738 | kernel thread explicitly this might happen) */ |
14fbf50d JL |
739 | /* BB: This shouldn't be necessary, see above */ |
740 | read_lock(&cifs_tcp_ses_lock); | |
741 | list_for_each(tmp, &server->smb_ses_list) { | |
742 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); | |
743 | ses->server = NULL; | |
31ca3bc3 | 744 | } |
14fbf50d | 745 | read_unlock(&cifs_tcp_ses_lock); |
31ca3bc3 | 746 | |
c359cf3c | 747 | kfree(server->hostname); |
b1c8d2b4 | 748 | task_to_wake = xchg(&server->tsk, NULL); |
31ca3bc3 | 749 | kfree(server); |
93d0ec85 JL |
750 | |
751 | length = atomic_dec_return(&tcpSesAllocCount); | |
26f57364 SF |
752 | if (length > 0) |
753 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, | |
754 | GFP_KERNEL); | |
50c2f753 | 755 | |
b1c8d2b4 JL |
756 | /* if server->tsk was NULL then wait for a signal before exiting */ |
757 | if (!task_to_wake) { | |
758 | set_current_state(TASK_INTERRUPTIBLE); | |
759 | while (!signal_pending(current)) { | |
760 | schedule(); | |
761 | set_current_state(TASK_INTERRUPTIBLE); | |
762 | } | |
763 | set_current_state(TASK_RUNNING); | |
764 | } | |
765 | ||
0468a2cf | 766 | module_put_and_exit(0); |
1da177e4 LT |
767 | } |
768 | ||
c359cf3c JL |
769 | /* extract the host portion of the UNC string */ |
770 | static char * | |
771 | extract_hostname(const char *unc) | |
772 | { | |
773 | const char *src; | |
774 | char *dst, *delim; | |
775 | unsigned int len; | |
776 | ||
777 | /* skip double chars at beginning of string */ | |
778 | /* BB: check validity of these bytes? */ | |
779 | src = unc + 2; | |
780 | ||
781 | /* delimiter between hostname and sharename is always '\\' now */ | |
782 | delim = strchr(src, '\\'); | |
783 | if (!delim) | |
784 | return ERR_PTR(-EINVAL); | |
785 | ||
786 | len = delim - src; | |
787 | dst = kmalloc((len + 1), GFP_KERNEL); | |
788 | if (dst == NULL) | |
789 | return ERR_PTR(-ENOMEM); | |
790 | ||
791 | memcpy(dst, src, len); | |
792 | dst[len] = '\0'; | |
793 | ||
794 | return dst; | |
795 | } | |
796 | ||
1da177e4 | 797 | static int |
50c2f753 SF |
798 | cifs_parse_mount_options(char *options, const char *devname, |
799 | struct smb_vol *vol) | |
1da177e4 LT |
800 | { |
801 | char *value; | |
802 | char *data; | |
803 | unsigned int temp_len, i, j; | |
804 | char separator[2]; | |
805 | ||
806 | separator[0] = ','; | |
50c2f753 | 807 | separator[1] = 0; |
1da177e4 | 808 | |
12e36b2f | 809 | if (Local_System_Name[0] != 0) |
50c2f753 | 810 | memcpy(vol->source_rfc1001_name, Local_System_Name, 15); |
2cd646a2 | 811 | else { |
12e36b2f | 812 | char *nodename = utsname()->nodename; |
50c2f753 SF |
813 | int n = strnlen(nodename, 15); |
814 | memset(vol->source_rfc1001_name, 0x20, 15); | |
815 | for (i = 0; i < n; i++) { | |
2cd646a2 SF |
816 | /* does not have to be perfect mapping since field is |
817 | informational, only used for servers that do not support | |
818 | port 445 and it can be overridden at mount time */ | |
12e36b2f | 819 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
2cd646a2 | 820 | } |
1da177e4 LT |
821 | } |
822 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
823 | /* null target name indicates to use *SMBSERVR default called name |
824 | if we end up sending RFC1001 session initialize */ | |
825 | vol->target_rfc1001_name[0] = 0; | |
a001e5b5 DH |
826 | vol->linux_uid = current_uid(); /* use current_euid() instead? */ |
827 | vol->linux_gid = current_gid(); | |
1da177e4 LT |
828 | vol->dir_mode = S_IRWXUGO; |
829 | /* 2767 perms indicate mandatory locking support */ | |
7505e052 | 830 | vol->file_mode = (S_IRWXUGO | S_ISGID) & (~S_IXGRP); |
1da177e4 LT |
831 | |
832 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
4b18f2a9 | 833 | vol->rw = true; |
ac67055e JA |
834 | /* default is always to request posix paths. */ |
835 | vol->posix_paths = 1; | |
836 | ||
1da177e4 LT |
837 | if (!options) |
838 | return 1; | |
839 | ||
50c2f753 | 840 | if (strncmp(options, "sep=", 4) == 0) { |
fb8c4b14 | 841 | if (options[4] != 0) { |
1da177e4 LT |
842 | separator[0] = options[4]; |
843 | options += 5; | |
844 | } else { | |
467a8f8d | 845 | cFYI(1, ("Null separator not allowed")); |
1da177e4 LT |
846 | } |
847 | } | |
50c2f753 | 848 | |
1da177e4 LT |
849 | while ((data = strsep(&options, separator)) != NULL) { |
850 | if (!*data) | |
851 | continue; | |
852 | if ((value = strchr(data, '=')) != NULL) | |
853 | *value++ = '\0'; | |
854 | ||
50c2f753 SF |
855 | /* Have to parse this before we parse for "user" */ |
856 | if (strnicmp(data, "user_xattr", 10) == 0) { | |
1da177e4 | 857 | vol->no_xattr = 0; |
50c2f753 | 858 | } else if (strnicmp(data, "nouser_xattr", 12) == 0) { |
1da177e4 LT |
859 | vol->no_xattr = 1; |
860 | } else if (strnicmp(data, "user", 4) == 0) { | |
4b952a9b | 861 | if (!value) { |
1da177e4 LT |
862 | printk(KERN_WARNING |
863 | "CIFS: invalid or missing username\n"); | |
864 | return 1; /* needs_arg; */ | |
fb8c4b14 | 865 | } else if (!*value) { |
4b952a9b SF |
866 | /* null user, ie anonymous, authentication */ |
867 | vol->nullauth = 1; | |
1da177e4 LT |
868 | } |
869 | if (strnlen(value, 200) < 200) { | |
870 | vol->username = value; | |
871 | } else { | |
872 | printk(KERN_WARNING "CIFS: username too long\n"); | |
873 | return 1; | |
874 | } | |
875 | } else if (strnicmp(data, "pass", 4) == 0) { | |
876 | if (!value) { | |
877 | vol->password = NULL; | |
878 | continue; | |
fb8c4b14 | 879 | } else if (value[0] == 0) { |
1da177e4 LT |
880 | /* check if string begins with double comma |
881 | since that would mean the password really | |
882 | does start with a comma, and would not | |
883 | indicate an empty string */ | |
fb8c4b14 | 884 | if (value[1] != separator[0]) { |
1da177e4 LT |
885 | vol->password = NULL; |
886 | continue; | |
887 | } | |
888 | } | |
889 | temp_len = strlen(value); | |
890 | /* removed password length check, NTLM passwords | |
891 | can be arbitrarily long */ | |
892 | ||
50c2f753 | 893 | /* if comma in password, the string will be |
1da177e4 LT |
894 | prematurely null terminated. Commas in password are |
895 | specified across the cifs mount interface by a double | |
896 | comma ie ,, and a comma used as in other cases ie ',' | |
897 | as a parameter delimiter/separator is single and due | |
898 | to the strsep above is temporarily zeroed. */ | |
899 | ||
900 | /* NB: password legally can have multiple commas and | |
901 | the only illegal character in a password is null */ | |
902 | ||
50c2f753 | 903 | if ((value[temp_len] == 0) && |
09d1db5c | 904 | (value[temp_len+1] == separator[0])) { |
1da177e4 LT |
905 | /* reinsert comma */ |
906 | value[temp_len] = separator[0]; | |
50c2f753 SF |
907 | temp_len += 2; /* move after second comma */ |
908 | while (value[temp_len] != 0) { | |
1da177e4 | 909 | if (value[temp_len] == separator[0]) { |
50c2f753 | 910 | if (value[temp_len+1] == |
09d1db5c SF |
911 | separator[0]) { |
912 | /* skip second comma */ | |
913 | temp_len++; | |
50c2f753 | 914 | } else { |
1da177e4 LT |
915 | /* single comma indicating start |
916 | of next parm */ | |
917 | break; | |
918 | } | |
919 | } | |
920 | temp_len++; | |
921 | } | |
fb8c4b14 | 922 | if (value[temp_len] == 0) { |
1da177e4 LT |
923 | options = NULL; |
924 | } else { | |
925 | value[temp_len] = 0; | |
926 | /* point option to start of next parm */ | |
927 | options = value + temp_len + 1; | |
928 | } | |
50c2f753 | 929 | /* go from value to value + temp_len condensing |
1da177e4 LT |
930 | double commas to singles. Note that this ends up |
931 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 932 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
fb8c4b14 | 933 | if (vol->password == NULL) { |
50c2f753 SF |
934 | printk(KERN_WARNING "CIFS: no memory " |
935 | "for password\n"); | |
433dc24f SF |
936 | return 1; |
937 | } | |
50c2f753 | 938 | for (i = 0, j = 0; i < temp_len; i++, j++) { |
1da177e4 | 939 | vol->password[j] = value[i]; |
fb8c4b14 | 940 | if (value[i] == separator[0] |
09d1db5c | 941 | && value[i+1] == separator[0]) { |
1da177e4 LT |
942 | /* skip second comma */ |
943 | i++; | |
944 | } | |
945 | } | |
946 | vol->password[j] = 0; | |
947 | } else { | |
e915fc49 | 948 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
fb8c4b14 | 949 | if (vol->password == NULL) { |
50c2f753 SF |
950 | printk(KERN_WARNING "CIFS: no memory " |
951 | "for password\n"); | |
433dc24f SF |
952 | return 1; |
953 | } | |
1da177e4 LT |
954 | strcpy(vol->password, value); |
955 | } | |
956 | } else if (strnicmp(data, "ip", 2) == 0) { | |
957 | if (!value || !*value) { | |
958 | vol->UNCip = NULL; | |
959 | } else if (strnlen(value, 35) < 35) { | |
960 | vol->UNCip = value; | |
961 | } else { | |
50c2f753 SF |
962 | printk(KERN_WARNING "CIFS: ip address " |
963 | "too long\n"); | |
1da177e4 LT |
964 | return 1; |
965 | } | |
50c2f753 SF |
966 | } else if (strnicmp(data, "sec", 3) == 0) { |
967 | if (!value || !*value) { | |
968 | cERROR(1, ("no security value specified")); | |
969 | continue; | |
970 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
971 | vol->secFlg |= CIFSSEC_MAY_KRB5 | | |
189acaae | 972 | CIFSSEC_MUST_SIGN; |
bf820679 | 973 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
50c2f753 SF |
974 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
975 | CIFSSEC_MAY_KRB5; */ | |
976 | cERROR(1, ("Krb5 cifs privacy not supported")); | |
bf820679 SF |
977 | return 1; |
978 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 979 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
bf820679 | 980 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 981 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 982 | CIFSSEC_MUST_SIGN; |
bf820679 | 983 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 984 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 985 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 986 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 987 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
988 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
989 | /* ntlm is default so can be turned off too */ | |
750d1151 | 990 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 991 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 992 | /* BB is there a better way to do this? */ |
750d1151 | 993 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
994 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
995 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
50c2f753 | 996 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 997 | #endif |
bf820679 | 998 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 999 | vol->nullauth = 1; |
50c2f753 SF |
1000 | } else { |
1001 | cERROR(1, ("bad security option: %s", value)); | |
1002 | return 1; | |
1003 | } | |
1da177e4 LT |
1004 | } else if ((strnicmp(data, "unc", 3) == 0) |
1005 | || (strnicmp(data, "target", 6) == 0) | |
1006 | || (strnicmp(data, "path", 4) == 0)) { | |
1007 | if (!value || !*value) { | |
50c2f753 SF |
1008 | printk(KERN_WARNING "CIFS: invalid path to " |
1009 | "network resource\n"); | |
1da177e4 LT |
1010 | return 1; /* needs_arg; */ |
1011 | } | |
1012 | if ((temp_len = strnlen(value, 300)) < 300) { | |
50c2f753 | 1013 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1014 | if (vol->UNC == NULL) |
1da177e4 | 1015 | return 1; |
50c2f753 | 1016 | strcpy(vol->UNC, value); |
1da177e4 LT |
1017 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1018 | vol->UNC[0] = '\\'; | |
1019 | vol->UNC[1] = '\\'; | |
50c2f753 | 1020 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
1da177e4 | 1021 | printk(KERN_WARNING |
50c2f753 SF |
1022 | "CIFS: UNC Path does not begin " |
1023 | "with // or \\\\ \n"); | |
1da177e4 LT |
1024 | return 1; |
1025 | } | |
1026 | } else { | |
1027 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1028 | return 1; | |
1029 | } | |
1030 | } else if ((strnicmp(data, "domain", 3) == 0) | |
1031 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
1032 | if (!value || !*value) { | |
1033 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
1034 | return 1; /* needs_arg; */ | |
1035 | } | |
1036 | /* BB are there cases in which a comma can be valid in | |
1037 | a domain name and need special handling? */ | |
3979877e | 1038 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
1039 | vol->domainname = value; |
1040 | cFYI(1, ("Domain name set")); | |
1041 | } else { | |
50c2f753 SF |
1042 | printk(KERN_WARNING "CIFS: domain name too " |
1043 | "long\n"); | |
1da177e4 LT |
1044 | return 1; |
1045 | } | |
50c2f753 SF |
1046 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
1047 | if (!value || !*value) { | |
1048 | printk(KERN_WARNING | |
1049 | "CIFS: invalid path prefix\n"); | |
1050 | return 1; /* needs_argument */ | |
1051 | } | |
1052 | if ((temp_len = strnlen(value, 1024)) < 1024) { | |
4523cc30 | 1053 | if (value[0] != '/') |
2fe87f02 | 1054 | temp_len++; /* missing leading slash */ |
50c2f753 SF |
1055 | vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); |
1056 | if (vol->prepath == NULL) | |
1057 | return 1; | |
4523cc30 | 1058 | if (value[0] != '/') { |
2fe87f02 | 1059 | vol->prepath[0] = '/'; |
50c2f753 | 1060 | strcpy(vol->prepath+1, value); |
2fe87f02 | 1061 | } else |
50c2f753 SF |
1062 | strcpy(vol->prepath, value); |
1063 | cFYI(1, ("prefix path %s", vol->prepath)); | |
1064 | } else { | |
1065 | printk(KERN_WARNING "CIFS: prefix too long\n"); | |
1066 | return 1; | |
1067 | } | |
1da177e4 LT |
1068 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
1069 | if (!value || !*value) { | |
63135e08 SF |
1070 | printk(KERN_WARNING "CIFS: invalid iocharset " |
1071 | "specified\n"); | |
1da177e4 LT |
1072 | return 1; /* needs_arg; */ |
1073 | } | |
1074 | if (strnlen(value, 65) < 65) { | |
50c2f753 | 1075 | if (strnicmp(value, "default", 7)) |
1da177e4 | 1076 | vol->iocharset = value; |
50c2f753 SF |
1077 | /* if iocharset not set then load_nls_default |
1078 | is used by caller */ | |
1079 | cFYI(1, ("iocharset set to %s", value)); | |
1da177e4 | 1080 | } else { |
63135e08 SF |
1081 | printk(KERN_WARNING "CIFS: iocharset name " |
1082 | "too long.\n"); | |
1da177e4 LT |
1083 | return 1; |
1084 | } | |
1085 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1086 | if (value && *value) { | |
1087 | vol->linux_uid = | |
1088 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1089 | vol->override_uid = 1; |
1da177e4 LT |
1090 | } |
1091 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1092 | if (value && *value) { | |
1093 | vol->linux_gid = | |
1094 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1095 | vol->override_gid = 1; |
1da177e4 LT |
1096 | } |
1097 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1098 | if (value && *value) { | |
1099 | vol->file_mode = | |
1100 | simple_strtoul(value, &value, 0); | |
1101 | } | |
1102 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1103 | if (value && *value) { | |
1104 | vol->dir_mode = | |
1105 | simple_strtoul(value, &value, 0); | |
1106 | } | |
1107 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1108 | if (value && *value) { | |
1109 | vol->dir_mode = | |
1110 | simple_strtoul(value, &value, 0); | |
1111 | } | |
1112 | } else if (strnicmp(data, "port", 4) == 0) { | |
1113 | if (value && *value) { | |
1114 | vol->port = | |
1115 | simple_strtoul(value, &value, 0); | |
1116 | } | |
1117 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1118 | if (value && *value) { | |
1119 | vol->rsize = | |
1120 | simple_strtoul(value, &value, 0); | |
1121 | } | |
1122 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1123 | if (value && *value) { | |
1124 | vol->wsize = | |
1125 | simple_strtoul(value, &value, 0); | |
1126 | } | |
1127 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1128 | if (value && *value) { | |
1129 | vol->sockopt = | |
1130 | simple_strtoul(value, &value, 0); | |
1131 | } | |
1132 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1133 | if (!value || !*value || (*value == ' ')) { | |
63135e08 | 1134 | cFYI(1, ("invalid (empty) netbiosname")); |
1da177e4 | 1135 | } else { |
50c2f753 SF |
1136 | memset(vol->source_rfc1001_name, 0x20, 15); |
1137 | for (i = 0; i < 15; i++) { | |
1138 | /* BB are there cases in which a comma can be | |
1da177e4 LT |
1139 | valid in this workstation netbios name (and need |
1140 | special handling)? */ | |
1141 | ||
1142 | /* We do not uppercase netbiosname for user */ | |
50c2f753 | 1143 | if (value[i] == 0) |
1da177e4 | 1144 | break; |
50c2f753 SF |
1145 | else |
1146 | vol->source_rfc1001_name[i] = | |
1147 | value[i]; | |
1da177e4 LT |
1148 | } |
1149 | /* The string has 16th byte zero still from | |
1150 | set at top of the function */ | |
50c2f753 SF |
1151 | if ((i == 15) && (value[i] != 0)) |
1152 | printk(KERN_WARNING "CIFS: netbiosname" | |
1153 | " longer than 15 truncated.\n"); | |
a10faeb2 SF |
1154 | } |
1155 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1156 | /* servernetbiosname specified override *SMBSERVER */ | |
1157 | if (!value || !*value || (*value == ' ')) { | |
467a8f8d | 1158 | cFYI(1, ("empty server netbiosname specified")); |
a10faeb2 SF |
1159 | } else { |
1160 | /* last byte, type, is 0x20 for servr type */ | |
50c2f753 | 1161 | memset(vol->target_rfc1001_name, 0x20, 16); |
a10faeb2 | 1162 | |
50c2f753 | 1163 | for (i = 0; i < 15; i++) { |
a10faeb2 | 1164 | /* BB are there cases in which a comma can be |
50c2f753 SF |
1165 | valid in this workstation netbios name |
1166 | (and need special handling)? */ | |
a10faeb2 | 1167 | |
50c2f753 SF |
1168 | /* user or mount helper must uppercase |
1169 | the netbiosname */ | |
1170 | if (value[i] == 0) | |
a10faeb2 SF |
1171 | break; |
1172 | else | |
50c2f753 SF |
1173 | vol->target_rfc1001_name[i] = |
1174 | value[i]; | |
a10faeb2 SF |
1175 | } |
1176 | /* The string has 16th byte zero still from | |
1177 | set at top of the function */ | |
50c2f753 SF |
1178 | if ((i == 15) && (value[i] != 0)) |
1179 | printk(KERN_WARNING "CIFS: server net" | |
1180 | "biosname longer than 15 truncated.\n"); | |
1da177e4 LT |
1181 | } |
1182 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1183 | /* ignore */ | |
1184 | } else if (strnicmp(data, "version", 3) == 0) { | |
1185 | /* ignore */ | |
50c2f753 | 1186 | } else if (strnicmp(data, "guest", 5) == 0) { |
1da177e4 LT |
1187 | /* ignore */ |
1188 | } else if (strnicmp(data, "rw", 2) == 0) { | |
4b18f2a9 | 1189 | vol->rw = true; |
edf1ae40 SF |
1190 | } else if (strnicmp(data, "noblocksend", 11) == 0) { |
1191 | vol->noblocksnd = 1; | |
1192 | } else if (strnicmp(data, "noautotune", 10) == 0) { | |
1193 | vol->noautotune = 1; | |
1da177e4 LT |
1194 | } else if ((strnicmp(data, "suid", 4) == 0) || |
1195 | (strnicmp(data, "nosuid", 6) == 0) || | |
1196 | (strnicmp(data, "exec", 4) == 0) || | |
1197 | (strnicmp(data, "noexec", 6) == 0) || | |
1198 | (strnicmp(data, "nodev", 5) == 0) || | |
1199 | (strnicmp(data, "noauto", 6) == 0) || | |
1200 | (strnicmp(data, "dev", 3) == 0)) { | |
1201 | /* The mount tool or mount.cifs helper (if present) | |
50c2f753 SF |
1202 | uses these opts to set flags, and the flags are read |
1203 | by the kernel vfs layer before we get here (ie | |
1204 | before read super) so there is no point trying to | |
1205 | parse these options again and set anything and it | |
1206 | is ok to just ignore them */ | |
1da177e4 LT |
1207 | continue; |
1208 | } else if (strnicmp(data, "ro", 2) == 0) { | |
4b18f2a9 | 1209 | vol->rw = false; |
1da177e4 LT |
1210 | } else if (strnicmp(data, "hard", 4) == 0) { |
1211 | vol->retry = 1; | |
1212 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1213 | vol->retry = 0; | |
1214 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1215 | vol->noperm = 0; | |
1216 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1217 | vol->noperm = 1; | |
6a0b4824 SF |
1218 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1219 | vol->remap = 1; | |
1220 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1221 | vol->remap = 0; | |
50c2f753 SF |
1222 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1223 | vol->sfu_emul = 1; | |
1224 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1225 | vol->sfu_emul = 0; | |
2c1b8615 SF |
1226 | } else if (strnicmp(data, "nodfs", 5) == 0) { |
1227 | vol->nodfs = 1; | |
ac67055e JA |
1228 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1229 | vol->posix_paths = 1; | |
1230 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1231 | vol->posix_paths = 0; | |
c18c842b SF |
1232 | } else if (strnicmp(data, "nounix", 6) == 0) { |
1233 | vol->no_linux_ext = 1; | |
1234 | } else if (strnicmp(data, "nolinux", 7) == 0) { | |
1235 | vol->no_linux_ext = 1; | |
50c2f753 | 1236 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
a10faeb2 | 1237 | (strnicmp(data, "ignorecase", 10) == 0)) { |
50c2f753 | 1238 | vol->nocase = 1; |
c46fa8ac SF |
1239 | } else if (strnicmp(data, "brl", 3) == 0) { |
1240 | vol->nobrl = 0; | |
50c2f753 | 1241 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1242 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1243 | vol->nobrl = 1; |
d3485d37 SF |
1244 | /* turn off mandatory locking in mode |
1245 | if remote locking is turned off since the | |
1246 | local vfs will do advisory */ | |
50c2f753 SF |
1247 | if (vol->file_mode == |
1248 | (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
d3485d37 | 1249 | vol->file_mode = S_IALLUGO; |
13a6e42a SF |
1250 | } else if (strnicmp(data, "forcemandatorylock", 9) == 0) { |
1251 | /* will take the shorter form "forcemand" as well */ | |
1252 | /* This mount option will force use of mandatory | |
1253 | (DOS/Windows style) byte range locks, instead of | |
1254 | using posix advisory byte range locks, even if the | |
1255 | Unix extensions are available and posix locks would | |
1256 | be supported otherwise. If Unix extensions are not | |
1257 | negotiated this has no effect since mandatory locks | |
1258 | would be used (mandatory locks is all that those | |
1259 | those servers support) */ | |
1260 | vol->mand_lock = 1; | |
1da177e4 LT |
1261 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1262 | vol->setuids = 1; | |
1263 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1264 | vol->setuids = 0; | |
d0a9c078 JL |
1265 | } else if (strnicmp(data, "dynperm", 7) == 0) { |
1266 | vol->dynperm = true; | |
1267 | } else if (strnicmp(data, "nodynperm", 9) == 0) { | |
1268 | vol->dynperm = false; | |
1da177e4 LT |
1269 | } else if (strnicmp(data, "nohard", 6) == 0) { |
1270 | vol->retry = 0; | |
1271 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1272 | vol->retry = 1; | |
1273 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1274 | vol->intr = 0; | |
1275 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1276 | vol->intr = 1; | |
50c2f753 | 1277 | } else if (strnicmp(data, "serverino", 7) == 0) { |
1da177e4 | 1278 | vol->server_ino = 1; |
50c2f753 | 1279 | } else if (strnicmp(data, "noserverino", 9) == 0) { |
1da177e4 | 1280 | vol->server_ino = 0; |
50c2f753 | 1281 | } else if (strnicmp(data, "cifsacl", 7) == 0) { |
0a4b92c0 SF |
1282 | vol->cifs_acl = 1; |
1283 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1284 | vol->cifs_acl = 0; | |
50c2f753 | 1285 | } else if (strnicmp(data, "acl", 3) == 0) { |
1da177e4 | 1286 | vol->no_psx_acl = 0; |
50c2f753 | 1287 | } else if (strnicmp(data, "noacl", 5) == 0) { |
1da177e4 | 1288 | vol->no_psx_acl = 1; |
84210e91 SF |
1289 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
1290 | } else if (strnicmp(data, "locallease", 6) == 0) { | |
1291 | vol->local_lease = 1; | |
1292 | #endif | |
50c2f753 | 1293 | } else if (strnicmp(data, "sign", 4) == 0) { |
750d1151 | 1294 | vol->secFlg |= CIFSSEC_MUST_SIGN; |
95b1cb90 SF |
1295 | } else if (strnicmp(data, "seal", 4) == 0) { |
1296 | /* we do not do the following in secFlags because seal | |
1297 | is a per tree connection (mount) not a per socket | |
1298 | or per-smb connection option in the protocol */ | |
1299 | /* vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
1300 | vol->seal = 1; | |
50c2f753 | 1301 | } else if (strnicmp(data, "direct", 6) == 0) { |
1da177e4 | 1302 | vol->direct_io = 1; |
50c2f753 | 1303 | } else if (strnicmp(data, "forcedirectio", 13) == 0) { |
1da177e4 | 1304 | vol->direct_io = 1; |
50c2f753 | 1305 | } else if (strnicmp(data, "in6_addr", 8) == 0) { |
1da177e4 LT |
1306 | if (!value || !*value) { |
1307 | vol->in6_addr = NULL; | |
1308 | } else if (strnlen(value, 49) == 48) { | |
1309 | vol->in6_addr = value; | |
1310 | } else { | |
50c2f753 SF |
1311 | printk(KERN_WARNING "CIFS: ip v6 address not " |
1312 | "48 characters long\n"); | |
1da177e4 LT |
1313 | return 1; |
1314 | } | |
1315 | } else if (strnicmp(data, "noac", 4) == 0) { | |
50c2f753 SF |
1316 | printk(KERN_WARNING "CIFS: Mount option noac not " |
1317 | "supported. Instead set " | |
1318 | "/proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1da177e4 | 1319 | } else |
50c2f753 SF |
1320 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n", |
1321 | data); | |
1da177e4 LT |
1322 | } |
1323 | if (vol->UNC == NULL) { | |
4523cc30 | 1324 | if (devname == NULL) { |
50c2f753 SF |
1325 | printk(KERN_WARNING "CIFS: Missing UNC name for mount " |
1326 | "target\n"); | |
1da177e4 LT |
1327 | return 1; |
1328 | } | |
1329 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
50c2f753 | 1330 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1331 | if (vol->UNC == NULL) |
1da177e4 | 1332 | return 1; |
50c2f753 | 1333 | strcpy(vol->UNC, devname); |
1da177e4 LT |
1334 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1335 | vol->UNC[0] = '\\'; | |
1336 | vol->UNC[1] = '\\'; | |
1337 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
50c2f753 SF |
1338 | printk(KERN_WARNING "CIFS: UNC Path does not " |
1339 | "begin with // or \\\\ \n"); | |
1da177e4 LT |
1340 | return 1; |
1341 | } | |
7c5e628f IM |
1342 | value = strpbrk(vol->UNC+2, "/\\"); |
1343 | if (value) | |
1344 | *value = '\\'; | |
1da177e4 LT |
1345 | } else { |
1346 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1347 | return 1; | |
1348 | } | |
1349 | } | |
fb8c4b14 | 1350 | if (vol->UNCip == NULL) |
1da177e4 LT |
1351 | vol->UNCip = &vol->UNC[2]; |
1352 | ||
1353 | return 0; | |
1354 | } | |
1355 | ||
e7ddee90 | 1356 | static struct TCP_Server_Info * |
a9ac49d3 | 1357 | cifs_find_tcp_session(struct sockaddr_storage *addr) |
1da177e4 LT |
1358 | { |
1359 | struct list_head *tmp; | |
e7ddee90 JL |
1360 | struct TCP_Server_Info *server; |
1361 | struct sockaddr_in *addr4 = (struct sockaddr_in *) addr; | |
1362 | struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *) addr; | |
1363 | ||
1364 | write_lock(&cifs_tcp_ses_lock); | |
1365 | list_for_each(tmp, &cifs_tcp_ses_list) { | |
1366 | server = list_entry(tmp, struct TCP_Server_Info, | |
1367 | tcp_ses_list); | |
e7ddee90 JL |
1368 | /* |
1369 | * the demux thread can exit on its own while still in CifsNew | |
1370 | * so don't accept any sockets in that state. Since the | |
1371 | * tcpStatus never changes back to CifsNew it's safe to check | |
1372 | * for this without a lock. | |
1373 | */ | |
1374 | if (server->tcpStatus == CifsNew) | |
1b20d672 | 1375 | continue; |
1da177e4 | 1376 | |
a9ac49d3 | 1377 | if (addr->ss_family == AF_INET && |
e7ddee90 JL |
1378 | (addr4->sin_addr.s_addr != |
1379 | server->addr.sockAddr.sin_addr.s_addr)) | |
1380 | continue; | |
a9ac49d3 | 1381 | else if (addr->ss_family == AF_INET6 && |
e7ddee90 JL |
1382 | memcmp(&server->addr.sockAddr6.sin6_addr, |
1383 | &addr6->sin6_addr, sizeof(addr6->sin6_addr))) | |
1b20d672 CG |
1384 | continue; |
1385 | ||
e7ddee90 JL |
1386 | ++server->srv_count; |
1387 | write_unlock(&cifs_tcp_ses_lock); | |
d82c2df5 | 1388 | cFYI(1, ("Existing tcp session with server found")); |
e7ddee90 | 1389 | return server; |
1da177e4 | 1390 | } |
e7ddee90 | 1391 | write_unlock(&cifs_tcp_ses_lock); |
1da177e4 LT |
1392 | return NULL; |
1393 | } | |
1b20d672 | 1394 | |
14fbf50d | 1395 | static void |
e7ddee90 | 1396 | cifs_put_tcp_session(struct TCP_Server_Info *server) |
1da177e4 | 1397 | { |
e7ddee90 | 1398 | struct task_struct *task; |
1b20d672 | 1399 | |
e7ddee90 JL |
1400 | write_lock(&cifs_tcp_ses_lock); |
1401 | if (--server->srv_count > 0) { | |
1402 | write_unlock(&cifs_tcp_ses_lock); | |
1403 | return; | |
1da177e4 | 1404 | } |
1b20d672 | 1405 | |
e7ddee90 JL |
1406 | list_del_init(&server->tcp_ses_list); |
1407 | write_unlock(&cifs_tcp_ses_lock); | |
dea570e0 | 1408 | |
e7ddee90 JL |
1409 | spin_lock(&GlobalMid_Lock); |
1410 | server->tcpStatus = CifsExiting; | |
1411 | spin_unlock(&GlobalMid_Lock); | |
dea570e0 | 1412 | |
e7ddee90 JL |
1413 | task = xchg(&server->tsk, NULL); |
1414 | if (task) | |
1415 | force_sig(SIGKILL, task); | |
1da177e4 LT |
1416 | } |
1417 | ||
63c038c2 JL |
1418 | static struct TCP_Server_Info * |
1419 | cifs_get_tcp_session(struct smb_vol *volume_info) | |
1420 | { | |
1421 | struct TCP_Server_Info *tcp_ses = NULL; | |
a9ac49d3 | 1422 | struct sockaddr_storage addr; |
63c038c2 JL |
1423 | struct sockaddr_in *sin_server = (struct sockaddr_in *) &addr; |
1424 | struct sockaddr_in6 *sin_server6 = (struct sockaddr_in6 *) &addr; | |
1425 | int rc; | |
1426 | ||
a9ac49d3 | 1427 | memset(&addr, 0, sizeof(struct sockaddr_storage)); |
63c038c2 JL |
1428 | |
1429 | if (volume_info->UNCip && volume_info->UNC) { | |
1430 | rc = cifs_inet_pton(AF_INET, volume_info->UNCip, | |
1431 | &sin_server->sin_addr.s_addr); | |
1432 | ||
1433 | if (rc <= 0) { | |
1434 | /* not ipv4 address, try ipv6 */ | |
1435 | rc = cifs_inet_pton(AF_INET6, volume_info->UNCip, | |
1436 | &sin_server6->sin6_addr.in6_u); | |
1437 | if (rc > 0) | |
a9ac49d3 | 1438 | addr.ss_family = AF_INET6; |
63c038c2 | 1439 | } else { |
a9ac49d3 | 1440 | addr.ss_family = AF_INET; |
63c038c2 JL |
1441 | } |
1442 | ||
1443 | if (rc <= 0) { | |
1444 | /* we failed translating address */ | |
1445 | rc = -EINVAL; | |
1446 | goto out_err; | |
1447 | } | |
1448 | ||
1449 | cFYI(1, ("UNC: %s ip: %s", volume_info->UNC, | |
1450 | volume_info->UNCip)); | |
1451 | } else if (volume_info->UNCip) { | |
1452 | /* BB using ip addr as tcp_ses name to connect to the | |
1453 | DFS root below */ | |
1454 | cERROR(1, ("Connecting to DFS root not implemented yet")); | |
1455 | rc = -EINVAL; | |
1456 | goto out_err; | |
1457 | } else /* which tcp_sess DFS root would we conect to */ { | |
1458 | cERROR(1, | |
1459 | ("CIFS mount error: No UNC path (e.g. -o " | |
1460 | "unc=//192.168.1.100/public) specified")); | |
1461 | rc = -EINVAL; | |
1462 | goto out_err; | |
1463 | } | |
1464 | ||
1465 | /* see if we already have a matching tcp_ses */ | |
1466 | tcp_ses = cifs_find_tcp_session(&addr); | |
1467 | if (tcp_ses) | |
1468 | return tcp_ses; | |
1469 | ||
1470 | tcp_ses = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); | |
1471 | if (!tcp_ses) { | |
1472 | rc = -ENOMEM; | |
1473 | goto out_err; | |
1474 | } | |
1475 | ||
1476 | tcp_ses->hostname = extract_hostname(volume_info->UNC); | |
1477 | if (IS_ERR(tcp_ses->hostname)) { | |
1478 | rc = PTR_ERR(tcp_ses->hostname); | |
1479 | goto out_err; | |
1480 | } | |
1481 | ||
1482 | tcp_ses->noblocksnd = volume_info->noblocksnd; | |
1483 | tcp_ses->noautotune = volume_info->noautotune; | |
1484 | atomic_set(&tcp_ses->inFlight, 0); | |
1485 | init_waitqueue_head(&tcp_ses->response_q); | |
1486 | init_waitqueue_head(&tcp_ses->request_q); | |
1487 | INIT_LIST_HEAD(&tcp_ses->pending_mid_q); | |
1488 | mutex_init(&tcp_ses->srv_mutex); | |
1489 | memcpy(tcp_ses->workstation_RFC1001_name, | |
1490 | volume_info->source_rfc1001_name, RFC1001_NAME_LEN_WITH_NULL); | |
1491 | memcpy(tcp_ses->server_RFC1001_name, | |
1492 | volume_info->target_rfc1001_name, RFC1001_NAME_LEN_WITH_NULL); | |
1493 | tcp_ses->sequence_number = 0; | |
1494 | INIT_LIST_HEAD(&tcp_ses->tcp_ses_list); | |
1495 | INIT_LIST_HEAD(&tcp_ses->smb_ses_list); | |
1496 | ||
1497 | /* | |
1498 | * at this point we are the only ones with the pointer | |
1499 | * to the struct since the kernel thread not created yet | |
1500 | * no need to spinlock this init of tcpStatus or srv_count | |
1501 | */ | |
1502 | tcp_ses->tcpStatus = CifsNew; | |
1503 | ++tcp_ses->srv_count; | |
1504 | ||
a9ac49d3 | 1505 | if (addr.ss_family == AF_INET6) { |
63c038c2 JL |
1506 | cFYI(1, ("attempting ipv6 connect")); |
1507 | /* BB should we allow ipv6 on port 139? */ | |
1508 | /* other OS never observed in Wild doing 139 with v6 */ | |
1509 | memcpy(&tcp_ses->addr.sockAddr6, sin_server6, | |
1510 | sizeof(struct sockaddr_in6)); | |
1511 | sin_server6->sin6_port = htons(volume_info->port); | |
d5c5605c | 1512 | rc = ipv6_connect(tcp_ses); |
63c038c2 JL |
1513 | } else { |
1514 | memcpy(&tcp_ses->addr.sockAddr, sin_server, | |
1515 | sizeof(struct sockaddr_in)); | |
1516 | sin_server->sin_port = htons(volume_info->port); | |
bcf4b106 | 1517 | rc = ipv4_connect(tcp_ses); |
63c038c2 JL |
1518 | } |
1519 | if (rc < 0) { | |
1520 | cERROR(1, ("Error connecting to socket. Aborting operation")); | |
1521 | goto out_err; | |
1522 | } | |
1523 | ||
1524 | /* | |
1525 | * since we're in a cifs function already, we know that | |
1526 | * this will succeed. No need for try_module_get(). | |
1527 | */ | |
1528 | __module_get(THIS_MODULE); | |
1529 | tcp_ses->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, | |
1530 | tcp_ses, "cifsd"); | |
1531 | if (IS_ERR(tcp_ses->tsk)) { | |
1532 | rc = PTR_ERR(tcp_ses->tsk); | |
1533 | cERROR(1, ("error %d create cifsd thread", rc)); | |
1534 | module_put(THIS_MODULE); | |
1535 | goto out_err; | |
1536 | } | |
1537 | ||
1538 | /* thread spawned, put it on the list */ | |
1539 | write_lock(&cifs_tcp_ses_lock); | |
1540 | list_add(&tcp_ses->tcp_ses_list, &cifs_tcp_ses_list); | |
1541 | write_unlock(&cifs_tcp_ses_lock); | |
1542 | ||
1543 | return tcp_ses; | |
1544 | ||
1545 | out_err: | |
1546 | if (tcp_ses) { | |
1547 | kfree(tcp_ses->hostname); | |
1548 | if (tcp_ses->ssocket) | |
1549 | sock_release(tcp_ses->ssocket); | |
1550 | kfree(tcp_ses); | |
1551 | } | |
1552 | return ERR_PTR(rc); | |
1553 | } | |
1554 | ||
14fbf50d JL |
1555 | static struct cifsSesInfo * |
1556 | cifs_find_smb_ses(struct TCP_Server_Info *server, char *username) | |
1da177e4 LT |
1557 | { |
1558 | struct list_head *tmp; | |
14fbf50d | 1559 | struct cifsSesInfo *ses; |
dea570e0 | 1560 | |
14fbf50d JL |
1561 | write_lock(&cifs_tcp_ses_lock); |
1562 | list_for_each(tmp, &server->smb_ses_list) { | |
1563 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); | |
1564 | if (strncmp(ses->userName, username, MAX_USERNAME_SIZE)) | |
dea570e0 SF |
1565 | continue; |
1566 | ||
14fbf50d JL |
1567 | ++ses->ses_count; |
1568 | write_unlock(&cifs_tcp_ses_lock); | |
1569 | return ses; | |
1570 | } | |
1571 | write_unlock(&cifs_tcp_ses_lock); | |
1572 | return NULL; | |
1573 | } | |
dea570e0 | 1574 | |
14fbf50d JL |
1575 | static void |
1576 | cifs_put_smb_ses(struct cifsSesInfo *ses) | |
1577 | { | |
1578 | int xid; | |
1579 | struct TCP_Server_Info *server = ses->server; | |
dea570e0 | 1580 | |
14fbf50d JL |
1581 | write_lock(&cifs_tcp_ses_lock); |
1582 | if (--ses->ses_count > 0) { | |
1583 | write_unlock(&cifs_tcp_ses_lock); | |
1584 | return; | |
1585 | } | |
dea570e0 | 1586 | |
14fbf50d JL |
1587 | list_del_init(&ses->smb_ses_list); |
1588 | write_unlock(&cifs_tcp_ses_lock); | |
dea570e0 | 1589 | |
14fbf50d JL |
1590 | if (ses->status == CifsGood) { |
1591 | xid = GetXid(); | |
1592 | CIFSSMBLogoff(xid, ses); | |
1593 | _FreeXid(xid); | |
1594 | } | |
1595 | sesInfoFree(ses); | |
1596 | cifs_put_tcp_session(server); | |
1597 | } | |
dea570e0 | 1598 | |
f1987b44 JL |
1599 | static struct cifsTconInfo * |
1600 | cifs_find_tcon(struct cifsSesInfo *ses, const char *unc) | |
1601 | { | |
1602 | struct list_head *tmp; | |
1603 | struct cifsTconInfo *tcon; | |
1604 | ||
1605 | write_lock(&cifs_tcp_ses_lock); | |
1606 | list_for_each(tmp, &ses->tcon_list) { | |
1607 | tcon = list_entry(tmp, struct cifsTconInfo, tcon_list); | |
1608 | if (tcon->tidStatus == CifsExiting) | |
1609 | continue; | |
1610 | if (strncmp(tcon->treeName, unc, MAX_TREE_SIZE)) | |
dea570e0 SF |
1611 | continue; |
1612 | ||
f1987b44 JL |
1613 | ++tcon->tc_count; |
1614 | write_unlock(&cifs_tcp_ses_lock); | |
dea570e0 | 1615 | return tcon; |
1da177e4 | 1616 | } |
f1987b44 | 1617 | write_unlock(&cifs_tcp_ses_lock); |
1da177e4 LT |
1618 | return NULL; |
1619 | } | |
1620 | ||
f1987b44 JL |
1621 | static void |
1622 | cifs_put_tcon(struct cifsTconInfo *tcon) | |
1623 | { | |
1624 | int xid; | |
1625 | struct cifsSesInfo *ses = tcon->ses; | |
1626 | ||
1627 | write_lock(&cifs_tcp_ses_lock); | |
1628 | if (--tcon->tc_count > 0) { | |
1629 | write_unlock(&cifs_tcp_ses_lock); | |
1630 | return; | |
1631 | } | |
1632 | ||
1633 | list_del_init(&tcon->tcon_list); | |
1634 | write_unlock(&cifs_tcp_ses_lock); | |
1635 | ||
1636 | xid = GetXid(); | |
1637 | CIFSSMBTDis(xid, tcon); | |
1638 | _FreeXid(xid); | |
1639 | ||
1640 | DeleteTconOplockQEntries(tcon); | |
1641 | tconInfoFree(tcon); | |
1642 | cifs_put_smb_ses(ses); | |
1643 | } | |
1644 | ||
1da177e4 | 1645 | int |
50c2f753 SF |
1646 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, |
1647 | const struct nls_table *nls_codepage, unsigned int *pnum_referrals, | |
366781c1 | 1648 | struct dfs_info3_param **preferrals, int remap) |
1da177e4 LT |
1649 | { |
1650 | char *temp_unc; | |
1651 | int rc = 0; | |
1652 | ||
1653 | *pnum_referrals = 0; | |
366781c1 | 1654 | *preferrals = NULL; |
1da177e4 LT |
1655 | |
1656 | if (pSesInfo->ipc_tid == 0) { | |
1657 | temp_unc = kmalloc(2 /* for slashes */ + | |
50c2f753 SF |
1658 | strnlen(pSesInfo->serverName, |
1659 | SERVER_NAME_LEN_WITH_NULL * 2) | |
1da177e4 LT |
1660 | + 1 + 4 /* slash IPC$ */ + 2, |
1661 | GFP_KERNEL); | |
1662 | if (temp_unc == NULL) | |
1663 | return -ENOMEM; | |
1664 | temp_unc[0] = '\\'; | |
1665 | temp_unc[1] = '\\'; | |
1666 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1667 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1668 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1669 | cFYI(1, | |
50c2f753 | 1670 | ("CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid)); |
1da177e4 LT |
1671 | kfree(temp_unc); |
1672 | } | |
1673 | if (rc == 0) | |
c2cf07d5 | 1674 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, |
737b758c | 1675 | pnum_referrals, nls_codepage, remap); |
366781c1 SF |
1676 | /* BB map targetUNCs to dfs_info3 structures, here or |
1677 | in CIFSGetDFSRefer BB */ | |
1da177e4 LT |
1678 | |
1679 | return rc; | |
1680 | } | |
1681 | ||
09e50d55 JL |
1682 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
1683 | static struct lock_class_key cifs_key[2]; | |
1684 | static struct lock_class_key cifs_slock_key[2]; | |
1685 | ||
1686 | static inline void | |
1687 | cifs_reclassify_socket4(struct socket *sock) | |
1688 | { | |
1689 | struct sock *sk = sock->sk; | |
1690 | BUG_ON(sock_owned_by_user(sk)); | |
1691 | sock_lock_init_class_and_name(sk, "slock-AF_INET-CIFS", | |
1692 | &cifs_slock_key[0], "sk_lock-AF_INET-CIFS", &cifs_key[0]); | |
1693 | } | |
1694 | ||
1695 | static inline void | |
1696 | cifs_reclassify_socket6(struct socket *sock) | |
1697 | { | |
1698 | struct sock *sk = sock->sk; | |
1699 | BUG_ON(sock_owned_by_user(sk)); | |
1700 | sock_lock_init_class_and_name(sk, "slock-AF_INET6-CIFS", | |
1701 | &cifs_slock_key[1], "sk_lock-AF_INET6-CIFS", &cifs_key[1]); | |
1702 | } | |
1703 | #else | |
1704 | static inline void | |
1705 | cifs_reclassify_socket4(struct socket *sock) | |
1706 | { | |
1707 | } | |
1708 | ||
1709 | static inline void | |
1710 | cifs_reclassify_socket6(struct socket *sock) | |
1711 | { | |
1712 | } | |
1713 | #endif | |
1714 | ||
1da177e4 | 1715 | /* See RFC1001 section 14 on representation of Netbios names */ |
50c2f753 | 1716 | static void rfc1002mangle(char *target, char *source, unsigned int length) |
1da177e4 | 1717 | { |
50c2f753 | 1718 | unsigned int i, j; |
1da177e4 | 1719 | |
50c2f753 | 1720 | for (i = 0, j = 0; i < (length); i++) { |
1da177e4 LT |
1721 | /* mask a nibble at a time and encode */ |
1722 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1723 | target[j+1] = 'A' + (0x0F & source[i]); | |
50c2f753 | 1724 | j += 2; |
1da177e4 LT |
1725 | } |
1726 | ||
1727 | } | |
1728 | ||
1729 | ||
1730 | static int | |
bcf4b106 | 1731 | ipv4_connect(struct TCP_Server_Info *server) |
1da177e4 LT |
1732 | { |
1733 | int rc = 0; | |
bcf4b106 | 1734 | bool connected = false; |
1da177e4 | 1735 | __be16 orig_port = 0; |
bcf4b106 | 1736 | struct socket *socket = server->ssocket; |
1da177e4 | 1737 | |
bcf4b106 | 1738 | if (socket == NULL) { |
50c2f753 | 1739 | rc = sock_create_kern(PF_INET, SOCK_STREAM, |
bcf4b106 | 1740 | IPPROTO_TCP, &socket); |
1da177e4 | 1741 | if (rc < 0) { |
50c2f753 | 1742 | cERROR(1, ("Error %d creating socket", rc)); |
1da177e4 | 1743 | return rc; |
1da177e4 | 1744 | } |
bcf4b106 JL |
1745 | |
1746 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1747 | cFYI(1, ("Socket created")); | |
1748 | server->ssocket = socket; | |
1749 | socket->sk->sk_allocation = GFP_NOFS; | |
1750 | cifs_reclassify_socket4(socket); | |
1da177e4 LT |
1751 | } |
1752 | ||
bcf4b106 JL |
1753 | /* user overrode default port */ |
1754 | if (server->addr.sockAddr.sin_port) { | |
1755 | rc = socket->ops->connect(socket, (struct sockaddr *) | |
1756 | &server->addr.sockAddr, | |
1757 | sizeof(struct sockaddr_in), 0); | |
1da177e4 | 1758 | if (rc >= 0) |
bcf4b106 | 1759 | connected = true; |
50c2f753 | 1760 | } |
1da177e4 | 1761 | |
fb8c4b14 | 1762 | if (!connected) { |
50c2f753 | 1763 | /* save original port so we can retry user specified port |
1da177e4 | 1764 | later if fall back ports fail this time */ |
bcf4b106 | 1765 | orig_port = server->addr.sockAddr.sin_port; |
1da177e4 LT |
1766 | |
1767 | /* do not retry on the same port we just failed on */ | |
bcf4b106 JL |
1768 | if (server->addr.sockAddr.sin_port != htons(CIFS_PORT)) { |
1769 | server->addr.sockAddr.sin_port = htons(CIFS_PORT); | |
1770 | rc = socket->ops->connect(socket, | |
1771 | (struct sockaddr *) | |
1772 | &server->addr.sockAddr, | |
1773 | sizeof(struct sockaddr_in), 0); | |
1da177e4 | 1774 | if (rc >= 0) |
bcf4b106 | 1775 | connected = true; |
1da177e4 LT |
1776 | } |
1777 | } | |
1778 | if (!connected) { | |
bcf4b106 JL |
1779 | server->addr.sockAddr.sin_port = htons(RFC1001_PORT); |
1780 | rc = socket->ops->connect(socket, (struct sockaddr *) | |
1781 | &server->addr.sockAddr, | |
6345a3a8 | 1782 | sizeof(struct sockaddr_in), 0); |
50c2f753 | 1783 | if (rc >= 0) |
bcf4b106 | 1784 | connected = true; |
1da177e4 LT |
1785 | } |
1786 | ||
1787 | /* give up here - unless we want to retry on different | |
1788 | protocol families some day */ | |
1789 | if (!connected) { | |
fb8c4b14 | 1790 | if (orig_port) |
bcf4b106 | 1791 | server->addr.sockAddr.sin_port = orig_port; |
50c2f753 | 1792 | cFYI(1, ("Error %d connecting to server via ipv4", rc)); |
bcf4b106 JL |
1793 | sock_release(socket); |
1794 | server->ssocket = NULL; | |
1da177e4 LT |
1795 | return rc; |
1796 | } | |
bcf4b106 JL |
1797 | |
1798 | ||
1799 | /* | |
1800 | * Eventually check for other socket options to change from | |
1801 | * the default. sock_setsockopt not used because it expects | |
1802 | * user space buffer | |
1803 | */ | |
1804 | socket->sk->sk_rcvtimeo = 7 * HZ; | |
da505c38 | 1805 | socket->sk->sk_sndtimeo = 5 * HZ; |
edf1ae40 | 1806 | |
b387eaeb | 1807 | /* make the bufsizes depend on wsize/rsize and max requests */ |
bcf4b106 JL |
1808 | if (server->noautotune) { |
1809 | if (socket->sk->sk_sndbuf < (200 * 1024)) | |
1810 | socket->sk->sk_sndbuf = 200 * 1024; | |
1811 | if (socket->sk->sk_rcvbuf < (140 * 1024)) | |
1812 | socket->sk->sk_rcvbuf = 140 * 1024; | |
edf1ae40 | 1813 | } |
1da177e4 | 1814 | |
bcf4b106 JL |
1815 | cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", |
1816 | socket->sk->sk_sndbuf, | |
1817 | socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo)); | |
1818 | ||
1da177e4 | 1819 | /* send RFC1001 sessinit */ |
bcf4b106 | 1820 | if (server->addr.sockAddr.sin_port == htons(RFC1001_PORT)) { |
1da177e4 | 1821 | /* some servers require RFC1001 sessinit before sending |
50c2f753 | 1822 | negprot - BB check reconnection in case where second |
1da177e4 | 1823 | sessinit is sent but no second negprot */ |
50c2f753 SF |
1824 | struct rfc1002_session_packet *ses_init_buf; |
1825 | struct smb_hdr *smb_buf; | |
1826 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), | |
1827 | GFP_KERNEL); | |
fb8c4b14 | 1828 | if (ses_init_buf) { |
1da177e4 | 1829 | ses_init_buf->trailer.session_req.called_len = 32; |
bcf4b106 JL |
1830 | if (server->server_RFC1001_name && |
1831 | server->server_RFC1001_name[0] != 0) | |
8ecaf67a JL |
1832 | rfc1002mangle(ses_init_buf->trailer. |
1833 | session_req.called_name, | |
bcf4b106 | 1834 | server->server_RFC1001_name, |
8ecaf67a | 1835 | RFC1001_NAME_LEN_WITH_NULL); |
bcf4b106 | 1836 | else |
8ecaf67a JL |
1837 | rfc1002mangle(ses_init_buf->trailer. |
1838 | session_req.called_name, | |
1839 | DEFAULT_CIFS_CALLED_NAME, | |
1840 | RFC1001_NAME_LEN_WITH_NULL); | |
a10faeb2 | 1841 | |
1da177e4 | 1842 | ses_init_buf->trailer.session_req.calling_len = 32; |
bcf4b106 | 1843 | |
1da177e4 LT |
1844 | /* calling name ends in null (byte 16) from old smb |
1845 | convention. */ | |
bcf4b106 JL |
1846 | if (server->workstation_RFC1001_name && |
1847 | server->workstation_RFC1001_name[0] != 0) | |
8ecaf67a JL |
1848 | rfc1002mangle(ses_init_buf->trailer. |
1849 | session_req.calling_name, | |
bcf4b106 | 1850 | server->workstation_RFC1001_name, |
8ecaf67a | 1851 | RFC1001_NAME_LEN_WITH_NULL); |
bcf4b106 | 1852 | else |
8ecaf67a JL |
1853 | rfc1002mangle(ses_init_buf->trailer. |
1854 | session_req.calling_name, | |
1855 | "LINUX_CIFS_CLNT", | |
1856 | RFC1001_NAME_LEN_WITH_NULL); | |
bcf4b106 | 1857 | |
1da177e4 LT |
1858 | ses_init_buf->trailer.session_req.scope1 = 0; |
1859 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1860 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1861 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1862 | smb_buf->smb_buf_length = 0x81000044; | |
0496e02d | 1863 | rc = smb_send(server, smb_buf, 0x44); |
1da177e4 | 1864 | kfree(ses_init_buf); |
50c2f753 | 1865 | msleep(1); /* RFC1001 layer in at least one server |
083d3a2c SF |
1866 | requires very short break before negprot |
1867 | presumably because not expecting negprot | |
1868 | to follow so fast. This is a simple | |
50c2f753 | 1869 | solution that works without |
083d3a2c SF |
1870 | complicating the code and causes no |
1871 | significant slowing down on mount | |
1872 | for everyone else */ | |
1da177e4 | 1873 | } |
50c2f753 | 1874 | /* else the negprot may still work without this |
1da177e4 | 1875 | even though malloc failed */ |
50c2f753 | 1876 | |
1da177e4 | 1877 | } |
50c2f753 | 1878 | |
1da177e4 LT |
1879 | return rc; |
1880 | } | |
1881 | ||
1882 | static int | |
d5c5605c | 1883 | ipv6_connect(struct TCP_Server_Info *server) |
1da177e4 LT |
1884 | { |
1885 | int rc = 0; | |
d5c5605c | 1886 | bool connected = false; |
1da177e4 | 1887 | __be16 orig_port = 0; |
d5c5605c | 1888 | struct socket *socket = server->ssocket; |
1da177e4 | 1889 | |
d5c5605c | 1890 | if (socket == NULL) { |
50c2f753 | 1891 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, |
d5c5605c | 1892 | IPPROTO_TCP, &socket); |
1da177e4 | 1893 | if (rc < 0) { |
50c2f753 | 1894 | cERROR(1, ("Error %d creating ipv6 socket", rc)); |
d5c5605c | 1895 | socket = NULL; |
1da177e4 | 1896 | return rc; |
1da177e4 | 1897 | } |
1da177e4 | 1898 | |
d5c5605c JL |
1899 | /* BB other socket options to set KEEPALIVE, NODELAY? */ |
1900 | cFYI(1, ("ipv6 Socket created")); | |
1901 | server->ssocket = socket; | |
1902 | socket->sk->sk_allocation = GFP_NOFS; | |
1903 | cifs_reclassify_socket6(socket); | |
1904 | } | |
1da177e4 | 1905 | |
d5c5605c JL |
1906 | /* user overrode default port */ |
1907 | if (server->addr.sockAddr6.sin6_port) { | |
1908 | rc = socket->ops->connect(socket, | |
1909 | (struct sockaddr *) &server->addr.sockAddr6, | |
6345a3a8 | 1910 | sizeof(struct sockaddr_in6), 0); |
1da177e4 | 1911 | if (rc >= 0) |
d5c5605c | 1912 | connected = true; |
50c2f753 | 1913 | } |
1da177e4 | 1914 | |
fb8c4b14 | 1915 | if (!connected) { |
50c2f753 | 1916 | /* save original port so we can retry user specified port |
1da177e4 LT |
1917 | later if fall back ports fail this time */ |
1918 | ||
d5c5605c | 1919 | orig_port = server->addr.sockAddr6.sin6_port; |
1da177e4 | 1920 | /* do not retry on the same port we just failed on */ |
d5c5605c JL |
1921 | if (server->addr.sockAddr6.sin6_port != htons(CIFS_PORT)) { |
1922 | server->addr.sockAddr6.sin6_port = htons(CIFS_PORT); | |
1923 | rc = socket->ops->connect(socket, (struct sockaddr *) | |
1924 | &server->addr.sockAddr6, | |
6345a3a8 | 1925 | sizeof(struct sockaddr_in6), 0); |
1da177e4 | 1926 | if (rc >= 0) |
d5c5605c | 1927 | connected = true; |
1da177e4 LT |
1928 | } |
1929 | } | |
1930 | if (!connected) { | |
d5c5605c JL |
1931 | server->addr.sockAddr6.sin6_port = htons(RFC1001_PORT); |
1932 | rc = socket->ops->connect(socket, (struct sockaddr *) | |
1933 | &server->addr.sockAddr6, | |
1934 | sizeof(struct sockaddr_in6), 0); | |
50c2f753 | 1935 | if (rc >= 0) |
d5c5605c | 1936 | connected = true; |
1da177e4 LT |
1937 | } |
1938 | ||
1939 | /* give up here - unless we want to retry on different | |
1940 | protocol families some day */ | |
1941 | if (!connected) { | |
fb8c4b14 | 1942 | if (orig_port) |
d5c5605c | 1943 | server->addr.sockAddr6.sin6_port = orig_port; |
50c2f753 | 1944 | cFYI(1, ("Error %d connecting to server via ipv6", rc)); |
d5c5605c JL |
1945 | sock_release(socket); |
1946 | server->ssocket = NULL; | |
1da177e4 LT |
1947 | return rc; |
1948 | } | |
edf1ae40 | 1949 | |
d5c5605c JL |
1950 | /* |
1951 | * Eventually check for other socket options to change from | |
1952 | * the default. sock_setsockopt not used because it expects | |
1953 | * user space buffer | |
1954 | */ | |
1955 | socket->sk->sk_rcvtimeo = 7 * HZ; | |
da505c38 | 1956 | socket->sk->sk_sndtimeo = 5 * HZ; |
d5c5605c | 1957 | server->ssocket = socket; |
50c2f753 | 1958 | |
1da177e4 LT |
1959 | return rc; |
1960 | } | |
1961 | ||
50c2f753 SF |
1962 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon, |
1963 | struct super_block *sb, struct smb_vol *vol_info) | |
8af18971 SF |
1964 | { |
1965 | /* if we are reconnecting then should we check to see if | |
1966 | * any requested capabilities changed locally e.g. via | |
1967 | * remount but we can not do much about it here | |
1968 | * if they have (even if we could detect it by the following) | |
1969 | * Perhaps we could add a backpointer to array of sb from tcon | |
1970 | * or if we change to make all sb to same share the same | |
1971 | * sb as NFS - then we only have one backpointer to sb. | |
1972 | * What if we wanted to mount the server share twice once with | |
1973 | * and once without posixacls or posix paths? */ | |
1974 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
50c2f753 | 1975 | |
c18c842b SF |
1976 | if (vol_info && vol_info->no_linux_ext) { |
1977 | tcon->fsUnixInfo.Capability = 0; | |
1978 | tcon->unix_ext = 0; /* Unix Extensions disabled */ | |
1979 | cFYI(1, ("Linux protocol extensions disabled")); | |
1980 | return; | |
1981 | } else if (vol_info) | |
1982 | tcon->unix_ext = 1; /* Unix Extensions supported */ | |
1983 | ||
1984 | if (tcon->unix_ext == 0) { | |
1985 | cFYI(1, ("Unix extensions disabled so not set on reconnect")); | |
1986 | return; | |
1987 | } | |
50c2f753 | 1988 | |
fb8c4b14 | 1989 | if (!CIFSSMBQFSUnixInfo(xid, tcon)) { |
8af18971 | 1990 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
50c2f753 | 1991 | |
8af18971 SF |
1992 | /* check for reconnect case in which we do not |
1993 | want to change the mount behavior if we can avoid it */ | |
fb8c4b14 | 1994 | if (vol_info == NULL) { |
50c2f753 | 1995 | /* turn off POSIX ACL and PATHNAMES if not set |
8af18971 SF |
1996 | originally at mount time */ |
1997 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) | |
1998 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
11b6d645 IM |
1999 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
2000 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) | |
2001 | cERROR(1, ("POSIXPATH support change")); | |
8af18971 | 2002 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
11b6d645 IM |
2003 | } else if ((cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
2004 | cERROR(1, ("possible reconnect error")); | |
2005 | cERROR(1, | |
2006 | ("server disabled POSIX path support")); | |
2007 | } | |
8af18971 | 2008 | } |
50c2f753 | 2009 | |
8af18971 | 2010 | cap &= CIFS_UNIX_CAP_MASK; |
75865f8c | 2011 | if (vol_info && vol_info->no_psx_acl) |
8af18971 | 2012 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
75865f8c | 2013 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
fb8c4b14 SF |
2014 | cFYI(1, ("negotiated posix acl support")); |
2015 | if (sb) | |
8af18971 SF |
2016 | sb->s_flags |= MS_POSIXACL; |
2017 | } | |
2018 | ||
75865f8c | 2019 | if (vol_info && vol_info->posix_paths == 0) |
8af18971 | 2020 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
75865f8c | 2021 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
fb8c4b14 | 2022 | cFYI(1, ("negotiate posix pathnames")); |
75865f8c | 2023 | if (sb) |
50c2f753 | 2024 | CIFS_SB(sb)->mnt_cifs_flags |= |
8af18971 SF |
2025 | CIFS_MOUNT_POSIX_PATHS; |
2026 | } | |
50c2f753 | 2027 | |
984acfe1 SF |
2028 | /* We might be setting the path sep back to a different |
2029 | form if we are reconnecting and the server switched its | |
50c2f753 | 2030 | posix path capability for this share */ |
75865f8c | 2031 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
984acfe1 | 2032 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
75865f8c SF |
2033 | |
2034 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { | |
2035 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { | |
2036 | CIFS_SB(sb)->rsize = 127 * 1024; | |
90c81e0b SF |
2037 | cFYI(DBG2, |
2038 | ("larger reads not supported by srv")); | |
75865f8c SF |
2039 | } |
2040 | } | |
50c2f753 SF |
2041 | |
2042 | ||
2043 | cFYI(1, ("Negotiate caps 0x%x", (int)cap)); | |
8af18971 | 2044 | #ifdef CONFIG_CIFS_DEBUG2 |
75865f8c | 2045 | if (cap & CIFS_UNIX_FCNTL_CAP) |
fb8c4b14 | 2046 | cFYI(1, ("FCNTL cap")); |
75865f8c | 2047 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
fb8c4b14 | 2048 | cFYI(1, ("EXTATTR cap")); |
75865f8c | 2049 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
fb8c4b14 | 2050 | cFYI(1, ("POSIX path cap")); |
75865f8c | 2051 | if (cap & CIFS_UNIX_XATTR_CAP) |
fb8c4b14 | 2052 | cFYI(1, ("XATTR cap")); |
75865f8c | 2053 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
fb8c4b14 | 2054 | cFYI(1, ("POSIX ACL cap")); |
75865f8c | 2055 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
fb8c4b14 | 2056 | cFYI(1, ("very large read cap")); |
75865f8c | 2057 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) |
fb8c4b14 | 2058 | cFYI(1, ("very large write cap")); |
8af18971 SF |
2059 | #endif /* CIFS_DEBUG2 */ |
2060 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
442aa310 | 2061 | if (vol_info == NULL) { |
5a44b319 | 2062 | cFYI(1, ("resetting capabilities failed")); |
442aa310 | 2063 | } else |
5a44b319 SF |
2064 | cERROR(1, ("Negotiating Unix capabilities " |
2065 | "with the server failed. Consider " | |
2066 | "mounting with the Unix Extensions\n" | |
2067 | "disabled, if problems are found, " | |
2068 | "by specifying the nounix mount " | |
2224f4e5 | 2069 | "option.")); |
5a44b319 | 2070 | |
8af18971 SF |
2071 | } |
2072 | } | |
2073 | } | |
2074 | ||
03a143c9 SF |
2075 | static void |
2076 | convert_delimiter(char *path, char delim) | |
2077 | { | |
2078 | int i; | |
c2d68ea6 | 2079 | char old_delim; |
03a143c9 SF |
2080 | |
2081 | if (path == NULL) | |
2082 | return; | |
2083 | ||
582d21e5 | 2084 | if (delim == '/') |
c2d68ea6 SF |
2085 | old_delim = '\\'; |
2086 | else | |
2087 | old_delim = '/'; | |
2088 | ||
03a143c9 | 2089 | for (i = 0; path[i] != '\0'; i++) { |
c2d68ea6 | 2090 | if (path[i] == old_delim) |
03a143c9 SF |
2091 | path[i] = delim; |
2092 | } | |
2093 | } | |
2094 | ||
3b795210 SF |
2095 | static void setup_cifs_sb(struct smb_vol *pvolume_info, |
2096 | struct cifs_sb_info *cifs_sb) | |
b1c8d2b4 | 2097 | { |
3b795210 SF |
2098 | if (pvolume_info->rsize > CIFSMaxBufSize) { |
2099 | cERROR(1, ("rsize %d too large, using MaxBufSize", | |
2100 | pvolume_info->rsize)); | |
2101 | cifs_sb->rsize = CIFSMaxBufSize; | |
2102 | } else if ((pvolume_info->rsize) && | |
2103 | (pvolume_info->rsize <= CIFSMaxBufSize)) | |
2104 | cifs_sb->rsize = pvolume_info->rsize; | |
2105 | else /* default */ | |
2106 | cifs_sb->rsize = CIFSMaxBufSize; | |
2107 | ||
2108 | if (pvolume_info->wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { | |
2109 | cERROR(1, ("wsize %d too large, using 4096 instead", | |
2110 | pvolume_info->wsize)); | |
2111 | cifs_sb->wsize = 4096; | |
2112 | } else if (pvolume_info->wsize) | |
2113 | cifs_sb->wsize = pvolume_info->wsize; | |
2114 | else | |
2115 | cifs_sb->wsize = min_t(const int, | |
2116 | PAGEVEC_SIZE * PAGE_CACHE_SIZE, | |
2117 | 127*1024); | |
2118 | /* old default of CIFSMaxBufSize was too small now | |
2119 | that SMB Write2 can send multiple pages in kvec. | |
2120 | RFC1001 does not describe what happens when frame | |
2121 | bigger than 128K is sent so use that as max in | |
2122 | conjunction with 52K kvec constraint on arch with 4K | |
2123 | page size */ | |
2124 | ||
2125 | if (cifs_sb->rsize < 2048) { | |
2126 | cifs_sb->rsize = 2048; | |
2127 | /* Windows ME may prefer this */ | |
2128 | cFYI(1, ("readsize set to minimum: 2048")); | |
2129 | } | |
2130 | /* calculate prepath */ | |
2131 | cifs_sb->prepath = pvolume_info->prepath; | |
2132 | if (cifs_sb->prepath) { | |
2133 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); | |
2134 | /* we can not convert the / to \ in the path | |
2135 | separators in the prefixpath yet because we do not | |
2136 | know (until reset_cifs_unix_caps is called later) | |
2137 | whether POSIX PATH CAP is available. We normalize | |
2138 | the / to \ after reset_cifs_unix_caps is called */ | |
2139 | pvolume_info->prepath = NULL; | |
2140 | } else | |
2141 | cifs_sb->prepathlen = 0; | |
2142 | cifs_sb->mnt_uid = pvolume_info->linux_uid; | |
2143 | cifs_sb->mnt_gid = pvolume_info->linux_gid; | |
2144 | cifs_sb->mnt_file_mode = pvolume_info->file_mode; | |
2145 | cifs_sb->mnt_dir_mode = pvolume_info->dir_mode; | |
2146 | cFYI(1, ("file mode: 0x%x dir mode: 0x%x", | |
2147 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode)); | |
2148 | ||
2149 | if (pvolume_info->noperm) | |
2150 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; | |
2151 | if (pvolume_info->setuids) | |
2152 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; | |
2153 | if (pvolume_info->server_ino) | |
2154 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; | |
2155 | if (pvolume_info->remap) | |
2156 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; | |
2157 | if (pvolume_info->no_xattr) | |
2158 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; | |
2159 | if (pvolume_info->sfu_emul) | |
2160 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; | |
2161 | if (pvolume_info->nobrl) | |
2162 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; | |
13a6e42a SF |
2163 | if (pvolume_info->mand_lock) |
2164 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOPOSIXBRL; | |
3b795210 SF |
2165 | if (pvolume_info->cifs_acl) |
2166 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; | |
2167 | if (pvolume_info->override_uid) | |
2168 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; | |
2169 | if (pvolume_info->override_gid) | |
2170 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; | |
2171 | if (pvolume_info->dynperm) | |
2172 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM; | |
2173 | if (pvolume_info->direct_io) { | |
2174 | cFYI(1, ("mounting share using direct i/o")); | |
2175 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; | |
2176 | } | |
2177 | ||
2178 | if ((pvolume_info->cifs_acl) && (pvolume_info->dynperm)) | |
2179 | cERROR(1, ("mount option dynperm ignored if cifsacl " | |
2180 | "mount option supported")); | |
b1c8d2b4 JL |
2181 | } |
2182 | ||
1da177e4 LT |
2183 | int |
2184 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
2185 | char *mount_data, const char *devname) | |
2186 | { | |
2187 | int rc = 0; | |
2188 | int xid; | |
7586b765 | 2189 | struct smb_vol *volume_info; |
1da177e4 | 2190 | struct cifsSesInfo *pSesInfo = NULL; |
1da177e4 LT |
2191 | struct cifsTconInfo *tcon = NULL; |
2192 | struct TCP_Server_Info *srvTcp = NULL; | |
2193 | ||
2194 | xid = GetXid(); | |
2195 | ||
7586b765 JL |
2196 | volume_info = kzalloc(sizeof(struct smb_vol), GFP_KERNEL); |
2197 | if (!volume_info) { | |
2198 | rc = -ENOMEM; | |
2199 | goto out; | |
2200 | } | |
50c2f753 | 2201 | |
7586b765 | 2202 | if (cifs_parse_mount_options(mount_data, devname, volume_info)) { |
70fe7dc0 JL |
2203 | rc = -EINVAL; |
2204 | goto out; | |
1da177e4 LT |
2205 | } |
2206 | ||
7586b765 | 2207 | if (volume_info->nullauth) { |
fb8c4b14 | 2208 | cFYI(1, ("null user")); |
7586b765 JL |
2209 | volume_info->username = ""; |
2210 | } else if (volume_info->username) { | |
1da177e4 | 2211 | /* BB fixme parse for domain name here */ |
7586b765 | 2212 | cFYI(1, ("Username: %s", volume_info->username)); |
1da177e4 | 2213 | } else { |
bf820679 | 2214 | cifserror("No username specified"); |
50c2f753 SF |
2215 | /* In userspace mount helper we can get user name from alternate |
2216 | locations such as env variables and files on disk */ | |
70fe7dc0 JL |
2217 | rc = -EINVAL; |
2218 | goto out; | |
1da177e4 LT |
2219 | } |
2220 | ||
1da177e4 LT |
2221 | |
2222 | /* this is needed for ASCII cp to Unicode converts */ | |
7586b765 | 2223 | if (volume_info->iocharset == NULL) { |
1da177e4 LT |
2224 | cifs_sb->local_nls = load_nls_default(); |
2225 | /* load_nls_default can not return null */ | |
2226 | } else { | |
7586b765 | 2227 | cifs_sb->local_nls = load_nls(volume_info->iocharset); |
fb8c4b14 | 2228 | if (cifs_sb->local_nls == NULL) { |
50c2f753 | 2229 | cERROR(1, ("CIFS mount error: iocharset %s not found", |
7586b765 | 2230 | volume_info->iocharset)); |
70fe7dc0 JL |
2231 | rc = -ELIBACC; |
2232 | goto out; | |
1da177e4 LT |
2233 | } |
2234 | } | |
2235 | ||
63c038c2 | 2236 | /* get a reference to a tcp session */ |
7586b765 | 2237 | srvTcp = cifs_get_tcp_session(volume_info); |
63c038c2 JL |
2238 | if (IS_ERR(srvTcp)) { |
2239 | rc = PTR_ERR(srvTcp); | |
2240 | goto out; | |
1da177e4 LT |
2241 | } |
2242 | ||
7586b765 | 2243 | pSesInfo = cifs_find_smb_ses(srvTcp, volume_info->username); |
14fbf50d | 2244 | if (pSesInfo) { |
1d9a8852 JL |
2245 | cFYI(1, ("Existing smb sess found (status=%d)", |
2246 | pSesInfo->status)); | |
14fbf50d JL |
2247 | /* |
2248 | * The existing SMB session already has a reference to srvTcp, | |
2249 | * so we can put back the extra one we got before | |
2250 | */ | |
2251 | cifs_put_tcp_session(srvTcp); | |
2252 | ||
88e7d705 | 2253 | down(&pSesInfo->sesSem); |
3b795210 | 2254 | if (pSesInfo->need_reconnect) { |
1d9a8852 | 2255 | cFYI(1, ("Session needs reconnect")); |
1d9a8852 JL |
2256 | rc = cifs_setup_session(xid, pSesInfo, |
2257 | cifs_sb->local_nls); | |
1d9a8852 | 2258 | } |
88e7d705 | 2259 | up(&pSesInfo->sesSem); |
1da177e4 | 2260 | } else if (!rc) { |
bf820679 | 2261 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 | 2262 | pSesInfo = sesInfoAlloc(); |
14fbf50d | 2263 | if (pSesInfo == NULL) { |
1da177e4 | 2264 | rc = -ENOMEM; |
14fbf50d | 2265 | goto mount_fail_check; |
1da177e4 LT |
2266 | } |
2267 | ||
14fbf50d JL |
2268 | /* new SMB session uses our srvTcp ref */ |
2269 | pSesInfo->server = srvTcp; | |
63c038c2 | 2270 | if (srvTcp->addr.sockAddr6.sin6_family == AF_INET6) |
0191b625 LT |
2271 | sprintf(pSesInfo->serverName, "%pI6", |
2272 | &srvTcp->addr.sockAddr6.sin6_addr); | |
8ecaf67a | 2273 | else |
0191b625 LT |
2274 | sprintf(pSesInfo->serverName, "%pI4", |
2275 | &srvTcp->addr.sockAddr.sin_addr.s_addr); | |
14fbf50d JL |
2276 | |
2277 | write_lock(&cifs_tcp_ses_lock); | |
2278 | list_add(&pSesInfo->smb_ses_list, &srvTcp->smb_ses_list); | |
2279 | write_unlock(&cifs_tcp_ses_lock); | |
2280 | ||
7586b765 JL |
2281 | /* volume_info->password freed at unmount */ |
2282 | if (volume_info->password) { | |
00e485b0 JL |
2283 | pSesInfo->password = kstrdup(volume_info->password, |
2284 | GFP_KERNEL); | |
2285 | if (!pSesInfo->password) { | |
2286 | rc = -ENOMEM; | |
2287 | goto mount_fail_check; | |
2288 | } | |
14fbf50d | 2289 | } |
7586b765 JL |
2290 | if (volume_info->username) |
2291 | strncpy(pSesInfo->userName, volume_info->username, | |
14fbf50d | 2292 | MAX_USERNAME_SIZE); |
7586b765 JL |
2293 | if (volume_info->domainname) { |
2294 | int len = strlen(volume_info->domainname); | |
14fbf50d JL |
2295 | pSesInfo->domainName = kmalloc(len + 1, GFP_KERNEL); |
2296 | if (pSesInfo->domainName) | |
2297 | strcpy(pSesInfo->domainName, | |
7586b765 | 2298 | volume_info->domainname); |
70fe7dc0 | 2299 | } |
7586b765 JL |
2300 | pSesInfo->linux_uid = volume_info->linux_uid; |
2301 | pSesInfo->overrideSecFlg = volume_info->secFlg; | |
14fbf50d | 2302 | down(&pSesInfo->sesSem); |
1da177e4 | 2303 | |
14fbf50d JL |
2304 | /* BB FIXME need to pass vol->secFlgs BB */ |
2305 | rc = cifs_setup_session(xid, pSesInfo, | |
2306 | cifs_sb->local_nls); | |
2307 | up(&pSesInfo->sesSem); | |
1da177e4 | 2308 | } |
50c2f753 | 2309 | |
1da177e4 LT |
2310 | /* search for existing tcon to this server share */ |
2311 | if (!rc) { | |
7586b765 | 2312 | setup_cifs_sb(volume_info, cifs_sb); |
1da177e4 | 2313 | |
7586b765 | 2314 | tcon = cifs_find_tcon(pSesInfo, volume_info->UNC); |
1da177e4 | 2315 | if (tcon) { |
bf820679 | 2316 | cFYI(1, ("Found match on UNC path")); |
f1987b44 JL |
2317 | /* existing tcon already has a reference */ |
2318 | cifs_put_smb_ses(pSesInfo); | |
7586b765 | 2319 | if (tcon->seal != volume_info->seal) |
95b1cb90 SF |
2320 | cERROR(1, ("transport encryption setting " |
2321 | "conflicts with existing tid")); | |
1da177e4 LT |
2322 | } else { |
2323 | tcon = tconInfoAlloc(); | |
3b795210 | 2324 | if (tcon == NULL) { |
1da177e4 | 2325 | rc = -ENOMEM; |
3b795210 SF |
2326 | goto mount_fail_check; |
2327 | } | |
00e485b0 | 2328 | |
ab3f9929 | 2329 | tcon->ses = pSesInfo; |
00e485b0 JL |
2330 | if (volume_info->password) { |
2331 | tcon->password = kstrdup(volume_info->password, | |
2332 | GFP_KERNEL); | |
2333 | if (!tcon->password) { | |
2334 | rc = -ENOMEM; | |
2335 | goto mount_fail_check; | |
2336 | } | |
2337 | } | |
3b795210 SF |
2338 | |
2339 | /* check for null share name ie connect to dfs root */ | |
7586b765 JL |
2340 | if ((strchr(volume_info->UNC + 3, '\\') == NULL) |
2341 | && (strchr(volume_info->UNC + 3, '/') == NULL)) { | |
3b795210 SF |
2342 | /* rc = connect_to_dfs_path(...) */ |
2343 | cFYI(1, ("DFS root not supported")); | |
2344 | rc = -ENODEV; | |
2345 | goto mount_fail_check; | |
2346 | } else { | |
2347 | /* BB Do we need to wrap sesSem around | |
2348 | * this TCon call and Unix SetFS as | |
2349 | * we do on SessSetup and reconnect? */ | |
7586b765 | 2350 | rc = CIFSTCon(xid, pSesInfo, volume_info->UNC, |
3b795210 SF |
2351 | tcon, cifs_sb->local_nls); |
2352 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
7586b765 | 2353 | if (volume_info->nodfs) { |
3b795210 SF |
2354 | tcon->Flags &= ~SMB_SHARE_IS_IN_DFS; |
2355 | cFYI(1, ("DFS disabled (%d)", | |
2356 | tcon->Flags)); | |
1da177e4 LT |
2357 | } |
2358 | } | |
14fbf50d | 2359 | if (rc) |
3b795210 | 2360 | goto mount_fail_check; |
7586b765 | 2361 | tcon->seal = volume_info->seal; |
f1987b44 JL |
2362 | write_lock(&cifs_tcp_ses_lock); |
2363 | list_add(&tcon->tcon_list, &pSesInfo->tcon_list); | |
2364 | write_unlock(&cifs_tcp_ses_lock); | |
1da177e4 | 2365 | } |
3b795210 SF |
2366 | |
2367 | /* we can have only one retry value for a connection | |
2368 | to a share so for resources mounted more than once | |
2369 | to the same server share the last value passed in | |
2370 | for the retry flag is used */ | |
7586b765 JL |
2371 | tcon->retry = volume_info->retry; |
2372 | tcon->nocase = volume_info->nocase; | |
2373 | tcon->local_lease = volume_info->local_lease; | |
1da177e4 | 2374 | } |
4523cc30 | 2375 | if (pSesInfo) { |
1da177e4 LT |
2376 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
2377 | sb->s_maxbytes = (u64) 1 << 63; | |
2378 | } else | |
2379 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
2380 | } | |
2381 | ||
8af18971 | 2382 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
1da177e4 LT |
2383 | sb->s_time_gran = 100; |
2384 | ||
3b795210 | 2385 | mount_fail_check: |
14fbf50d | 2386 | /* on error free sesinfo and tcon struct if needed */ |
1da177e4 | 2387 | if (rc) { |
e7ddee90 JL |
2388 | /* If find_unc succeeded then rc == 0 so we can not end */ |
2389 | /* up accidently freeing someone elses tcon struct */ | |
2390 | if (tcon) | |
f1987b44 JL |
2391 | cifs_put_tcon(tcon); |
2392 | else if (pSesInfo) | |
14fbf50d | 2393 | cifs_put_smb_ses(pSesInfo); |
c18c842b | 2394 | else |
14fbf50d | 2395 | cifs_put_tcp_session(srvTcp); |
d82c2df5 SF |
2396 | goto out; |
2397 | } | |
d82c2df5 | 2398 | cifs_sb->tcon = tcon; |
c18c842b | 2399 | |
d82c2df5 SF |
2400 | /* do not care if following two calls succeed - informational */ |
2401 | if (!tcon->ipc) { | |
2402 | CIFSSMBQFSDeviceInfo(xid, tcon); | |
2403 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
2404 | } | |
03a143c9 | 2405 | |
d82c2df5 SF |
2406 | /* tell server which Unix caps we support */ |
2407 | if (tcon->ses->capabilities & CAP_UNIX) | |
2408 | /* reset of caps checks mount to see if unix extensions | |
2409 | disabled for just this mount */ | |
7586b765 | 2410 | reset_cifs_unix_caps(xid, tcon, sb, volume_info); |
d82c2df5 SF |
2411 | else |
2412 | tcon->unix_ext = 0; /* server does not support them */ | |
c18c842b | 2413 | |
d82c2df5 SF |
2414 | /* convert forward to back slashes in prepath here if needed */ |
2415 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0) | |
2416 | convert_delimiter(cifs_sb->prepath, CIFS_DIR_SEP(cifs_sb)); | |
03a143c9 | 2417 | |
d82c2df5 SF |
2418 | if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) { |
2419 | cifs_sb->rsize = 1024 * 127; | |
2420 | cFYI(DBG2, ("no very large read support, rsize now 127K")); | |
1da177e4 | 2421 | } |
d82c2df5 SF |
2422 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
2423 | cifs_sb->wsize = min(cifs_sb->wsize, | |
2424 | (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)); | |
2425 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) | |
2426 | cifs_sb->rsize = min(cifs_sb->rsize, | |
2427 | (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)); | |
1da177e4 | 2428 | |
7586b765 | 2429 | /* volume_info->password is freed above when existing session found |
1da177e4 LT |
2430 | (in which case it is not needed anymore) but when new sesion is created |
2431 | the password ptr is put in the new session structure (in which case the | |
2432 | password will be freed at unmount time) */ | |
70fe7dc0 JL |
2433 | out: |
2434 | /* zero out password before freeing */ | |
7586b765 JL |
2435 | if (volume_info) { |
2436 | if (volume_info->password != NULL) { | |
2437 | memset(volume_info->password, 0, | |
2438 | strlen(volume_info->password)); | |
2439 | kfree(volume_info->password); | |
2440 | } | |
2441 | kfree(volume_info->UNC); | |
2442 | kfree(volume_info->prepath); | |
2443 | kfree(volume_info); | |
70fe7dc0 | 2444 | } |
1da177e4 LT |
2445 | FreeXid(xid); |
2446 | return rc; | |
2447 | } | |
2448 | ||
2449 | static int | |
2450 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 2451 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
2452 | const struct nls_table *nls_codepage) |
2453 | { | |
2454 | struct smb_hdr *smb_buffer; | |
2455 | struct smb_hdr *smb_buffer_response; | |
2456 | SESSION_SETUP_ANDX *pSMB; | |
2457 | SESSION_SETUP_ANDX *pSMBr; | |
2458 | char *bcc_ptr; | |
2459 | char *user; | |
2460 | char *domain; | |
2461 | int rc = 0; | |
2462 | int remaining_words = 0; | |
2463 | int bytes_returned = 0; | |
2464 | int len; | |
2465 | __u32 capabilities; | |
2466 | __u16 count; | |
2467 | ||
eeac8047 | 2468 | cFYI(1, ("In sesssetup")); |
4523cc30 | 2469 | if (ses == NULL) |
1da177e4 LT |
2470 | return -EINVAL; |
2471 | user = ses->userName; | |
2472 | domain = ses->domainName; | |
2473 | smb_buffer = cifs_buf_get(); | |
582d21e5 SF |
2474 | |
2475 | if (smb_buffer == NULL) | |
1da177e4 | 2476 | return -ENOMEM; |
582d21e5 | 2477 | |
1da177e4 LT |
2478 | smb_buffer_response = smb_buffer; |
2479 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2480 | ||
2481 | /* send SMBsessionSetup here */ | |
2482 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2483 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2484 | ||
1982c344 | 2485 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2486 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2487 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2488 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2489 | ||
50c2f753 SF |
2490 | if (ses->server->secMode & |
2491 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
2492 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2493 | ||
2494 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2495 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2496 | if (ses->capabilities & CAP_UNICODE) { | |
2497 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2498 | capabilities |= CAP_UNICODE; | |
2499 | } | |
2500 | if (ses->capabilities & CAP_STATUS32) { | |
2501 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2502 | capabilities |= CAP_STATUS32; | |
2503 | } | |
2504 | if (ses->capabilities & CAP_DFS) { | |
2505 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2506 | capabilities |= CAP_DFS; | |
2507 | } | |
2508 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2509 | ||
50c2f753 | 2510 | pSMB->req_no_secext.CaseInsensitivePasswordLength = |
7c7b25bc | 2511 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2512 | |
2513 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2514 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2515 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2516 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2517 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2518 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2519 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2520 | |
2521 | if (ses->capabilities & CAP_UNICODE) { | |
2522 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2523 | *bcc_ptr = 0; | |
2524 | bcc_ptr++; | |
2525 | } | |
4523cc30 | 2526 | if (user == NULL) |
3979877e | 2527 | bytes_returned = 0; /* skip null user */ |
50c2f753 | 2528 | else |
1da177e4 | 2529 | bytes_returned = |
50c2f753 | 2530 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2531 | nls_codepage); |
2532 | /* convert number of 16 bit words to bytes */ | |
2533 | bcc_ptr += 2 * bytes_returned; | |
2534 | bcc_ptr += 2; /* trailing null */ | |
2535 | if (domain == NULL) | |
2536 | bytes_returned = | |
e89dc920 | 2537 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2538 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2539 | else | |
2540 | bytes_returned = | |
e89dc920 | 2541 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2542 | nls_codepage); |
2543 | bcc_ptr += 2 * bytes_returned; | |
2544 | bcc_ptr += 2; | |
2545 | bytes_returned = | |
e89dc920 | 2546 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2547 | 32, nls_codepage); |
2548 | bcc_ptr += 2 * bytes_returned; | |
2549 | bytes_returned = | |
e9ff3990 | 2550 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, |
1da177e4 LT |
2551 | 32, nls_codepage); |
2552 | bcc_ptr += 2 * bytes_returned; | |
2553 | bcc_ptr += 2; | |
2554 | bytes_returned = | |
e89dc920 | 2555 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2556 | 64, nls_codepage); |
2557 | bcc_ptr += 2 * bytes_returned; | |
2558 | bcc_ptr += 2; | |
2559 | } else { | |
50c2f753 | 2560 | if (user != NULL) { |
1da177e4 LT |
2561 | strncpy(bcc_ptr, user, 200); |
2562 | bcc_ptr += strnlen(user, 200); | |
2563 | } | |
2564 | *bcc_ptr = 0; | |
2565 | bcc_ptr++; | |
2566 | if (domain == NULL) { | |
2567 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2568 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2569 | } else { | |
2570 | strncpy(bcc_ptr, domain, 64); | |
2571 | bcc_ptr += strnlen(domain, 64); | |
2572 | *bcc_ptr = 0; | |
2573 | bcc_ptr++; | |
2574 | } | |
2575 | strcpy(bcc_ptr, "Linux version "); | |
2576 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2577 | strcpy(bcc_ptr, utsname()->release); |
2578 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2579 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2580 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2581 | } | |
2582 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2583 | smb_buffer->smb_buf_length += count; | |
2584 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2585 | ||
2586 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2587 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2588 | if (rc) { |
2589 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2590 | } else if ((smb_buffer_response->WordCount == 3) | |
2591 | || (smb_buffer_response->WordCount == 4)) { | |
2592 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2593 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2594 | if (action & GUEST_LOGIN) | |
61e74801 | 2595 | cFYI(1, ("Guest login")); /* BB mark SesInfo struct? */ |
50c2f753 SF |
2596 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format |
2597 | (little endian) */ | |
1da177e4 | 2598 | cFYI(1, ("UID = %d ", ses->Suid)); |
50c2f753 SF |
2599 | /* response can have either 3 or 4 word count - Samba sends 3 */ |
2600 | bcc_ptr = pByteArea(smb_buffer_response); | |
1da177e4 LT |
2601 | if ((pSMBr->resp.hdr.WordCount == 3) |
2602 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2603 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2604 | if (pSMBr->resp.hdr.WordCount == 4) | |
2605 | bcc_ptr += blob_len; | |
2606 | ||
2607 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2608 | if ((long) (bcc_ptr) % 2) { | |
2609 | remaining_words = | |
50c2f753 SF |
2610 | (BCC(smb_buffer_response) - 1) / 2; |
2611 | /* Unicode strings must be word | |
2612 | aligned */ | |
2613 | bcc_ptr++; | |
1da177e4 LT |
2614 | } else { |
2615 | remaining_words = | |
2616 | BCC(smb_buffer_response) / 2; | |
2617 | } | |
2618 | len = | |
2619 | UniStrnlen((wchar_t *) bcc_ptr, | |
2620 | remaining_words - 1); | |
2621 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2622 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2623 | terminating last Unicode string in response */ | |
fb8c4b14 | 2624 | if (ses->serverOS) |
a424f8bf | 2625 | kfree(ses->serverOS); |
50c2f753 SF |
2626 | ses->serverOS = kzalloc(2 * (len + 1), |
2627 | GFP_KERNEL); | |
fb8c4b14 | 2628 | if (ses->serverOS == NULL) |
433dc24f | 2629 | goto sesssetup_nomem; |
1da177e4 | 2630 | cifs_strfromUCS_le(ses->serverOS, |
50c2f753 SF |
2631 | (__le16 *)bcc_ptr, |
2632 | len, nls_codepage); | |
1da177e4 LT |
2633 | bcc_ptr += 2 * (len + 1); |
2634 | remaining_words -= len + 1; | |
2635 | ses->serverOS[2 * len] = 0; | |
2636 | ses->serverOS[1 + (2 * len)] = 0; | |
2637 | if (remaining_words > 0) { | |
2638 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2639 | remaining_words-1); | |
cd49b492 | 2640 | kfree(ses->serverNOS); |
50c2f753 SF |
2641 | ses->serverNOS = kzalloc(2 * (len + 1), |
2642 | GFP_KERNEL); | |
fb8c4b14 | 2643 | if (ses->serverNOS == NULL) |
433dc24f | 2644 | goto sesssetup_nomem; |
1da177e4 | 2645 | cifs_strfromUCS_le(ses->serverNOS, |
50c2f753 SF |
2646 | (__le16 *)bcc_ptr, |
2647 | len, nls_codepage); | |
1da177e4 LT |
2648 | bcc_ptr += 2 * (len + 1); |
2649 | ses->serverNOS[2 * len] = 0; | |
2650 | ses->serverNOS[1 + (2 * len)] = 0; | |
fb8c4b14 | 2651 | if (strncmp(ses->serverNOS, |
50c2f753 | 2652 | "NT LAN Manager 4", 16) == 0) { |
467a8f8d | 2653 | cFYI(1, ("NT4 server")); |
1da177e4 LT |
2654 | ses->flags |= CIFS_SES_NT4; |
2655 | } | |
2656 | remaining_words -= len + 1; | |
2657 | if (remaining_words > 0) { | |
433dc24f | 2658 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
50c2f753 SF |
2659 | /* last string is not always null terminated |
2660 | (for e.g. for Windows XP & 2000) */ | |
fb8c4b14 | 2661 | if (ses->serverDomain) |
a424f8bf | 2662 | kfree(ses->serverDomain); |
1da177e4 | 2663 | ses->serverDomain = |
50c2f753 SF |
2664 | kzalloc(2*(len+1), |
2665 | GFP_KERNEL); | |
fb8c4b14 | 2666 | if (ses->serverDomain == NULL) |
433dc24f | 2667 | goto sesssetup_nomem; |
1da177e4 | 2668 | cifs_strfromUCS_le(ses->serverDomain, |
50c2f753 SF |
2669 | (__le16 *)bcc_ptr, |
2670 | len, nls_codepage); | |
1da177e4 LT |
2671 | bcc_ptr += 2 * (len + 1); |
2672 | ses->serverDomain[2*len] = 0; | |
2673 | ses->serverDomain[1+(2*len)] = 0; | |
50c2f753 SF |
2674 | } else { /* else no more room so create |
2675 | dummy domain string */ | |
fb8c4b14 | 2676 | if (ses->serverDomain) |
a424f8bf | 2677 | kfree(ses->serverDomain); |
50c2f753 | 2678 | ses->serverDomain = |
e915fc49 | 2679 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2680 | } |
50c2f753 SF |
2681 | } else { /* no room so create dummy domain |
2682 | and NOS string */ | |
2683 | ||
433dc24f SF |
2684 | /* if these kcallocs fail not much we |
2685 | can do, but better to not fail the | |
2686 | sesssetup itself */ | |
cd49b492 | 2687 | kfree(ses->serverDomain); |
1da177e4 | 2688 | ses->serverDomain = |
e915fc49 | 2689 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2690 | kfree(ses->serverNOS); |
1da177e4 | 2691 | ses->serverNOS = |
e915fc49 | 2692 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2693 | } |
2694 | } else { /* ASCII */ | |
2695 | len = strnlen(bcc_ptr, 1024); | |
2696 | if (((long) bcc_ptr + len) - (long) | |
2697 | pByteArea(smb_buffer_response) | |
2698 | <= BCC(smb_buffer_response)) { | |
cd49b492 | 2699 | kfree(ses->serverOS); |
50c2f753 SF |
2700 | ses->serverOS = kzalloc(len + 1, |
2701 | GFP_KERNEL); | |
fb8c4b14 | 2702 | if (ses->serverOS == NULL) |
433dc24f | 2703 | goto sesssetup_nomem; |
50c2f753 | 2704 | strncpy(ses->serverOS, bcc_ptr, len); |
1da177e4 LT |
2705 | |
2706 | bcc_ptr += len; | |
50c2f753 SF |
2707 | /* null terminate the string */ |
2708 | bcc_ptr[0] = 0; | |
1da177e4 LT |
2709 | bcc_ptr++; |
2710 | ||
2711 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2712 | kfree(ses->serverNOS); |
50c2f753 SF |
2713 | ses->serverNOS = kzalloc(len + 1, |
2714 | GFP_KERNEL); | |
fb8c4b14 | 2715 | if (ses->serverNOS == NULL) |
433dc24f | 2716 | goto sesssetup_nomem; |
1da177e4 LT |
2717 | strncpy(ses->serverNOS, bcc_ptr, len); |
2718 | bcc_ptr += len; | |
2719 | bcc_ptr[0] = 0; | |
2720 | bcc_ptr++; | |
2721 | ||
2722 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 2723 | if (ses->serverDomain) |
a424f8bf | 2724 | kfree(ses->serverDomain); |
50c2f753 SF |
2725 | ses->serverDomain = kzalloc(len + 1, |
2726 | GFP_KERNEL); | |
fb8c4b14 | 2727 | if (ses->serverDomain == NULL) |
433dc24f | 2728 | goto sesssetup_nomem; |
50c2f753 SF |
2729 | strncpy(ses->serverDomain, bcc_ptr, |
2730 | len); | |
1da177e4 LT |
2731 | bcc_ptr += len; |
2732 | bcc_ptr[0] = 0; | |
2733 | bcc_ptr++; | |
2734 | } else | |
2735 | cFYI(1, | |
50c2f753 SF |
2736 | ("Variable field of length %d " |
2737 | "extends beyond end of smb ", | |
1da177e4 LT |
2738 | len)); |
2739 | } | |
2740 | } else { | |
61e74801 | 2741 | cERROR(1, ("Security Blob Length extends beyond " |
50c2f753 | 2742 | "end of SMB")); |
1da177e4 LT |
2743 | } |
2744 | } else { | |
61e74801 | 2745 | cERROR(1, ("Invalid Word count %d: ", |
1da177e4 LT |
2746 | smb_buffer_response->WordCount)); |
2747 | rc = -EIO; | |
2748 | } | |
433dc24f SF |
2749 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2750 | since that could make reconnection harder, and | |
2751 | reconnection might be needed to free memory */ | |
a8a11d39 | 2752 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2753 | |
2754 | return rc; | |
2755 | } | |
2756 | ||
1da177e4 LT |
2757 | static int |
2758 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
4b18f2a9 | 2759 | struct cifsSesInfo *ses, bool *pNTLMv2_flag, |
1da177e4 LT |
2760 | const struct nls_table *nls_codepage) |
2761 | { | |
2762 | struct smb_hdr *smb_buffer; | |
2763 | struct smb_hdr *smb_buffer_response; | |
2764 | SESSION_SETUP_ANDX *pSMB; | |
2765 | SESSION_SETUP_ANDX *pSMBr; | |
2766 | char *bcc_ptr; | |
2767 | char *domain; | |
2768 | int rc = 0; | |
2769 | int remaining_words = 0; | |
2770 | int bytes_returned = 0; | |
2771 | int len; | |
6345a3a8 | 2772 | int SecurityBlobLength = sizeof(NEGOTIATE_MESSAGE); |
1da177e4 LT |
2773 | PNEGOTIATE_MESSAGE SecurityBlob; |
2774 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2775 | __u32 negotiate_flags, capabilities; | |
2776 | __u16 count; | |
2777 | ||
12b3b8ff | 2778 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
fb8c4b14 | 2779 | if (ses == NULL) |
1da177e4 LT |
2780 | return -EINVAL; |
2781 | domain = ses->domainName; | |
4b18f2a9 | 2782 | *pNTLMv2_flag = false; |
1da177e4 LT |
2783 | smb_buffer = cifs_buf_get(); |
2784 | if (smb_buffer == NULL) { | |
2785 | return -ENOMEM; | |
2786 | } | |
2787 | smb_buffer_response = smb_buffer; | |
2788 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2789 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2790 | ||
2791 | /* send SMBsessionSetup here */ | |
2792 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2793 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2794 | |
2795 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2796 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2797 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2798 | ||
2799 | pSMB->req.AndXCommand = 0xFF; | |
2800 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2801 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2802 | ||
fb8c4b14 | 2803 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2804 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2805 | ||
2806 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2807 | CAP_EXTENDED_SECURITY; | |
2808 | if (ses->capabilities & CAP_UNICODE) { | |
2809 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2810 | capabilities |= CAP_UNICODE; | |
2811 | } | |
2812 | if (ses->capabilities & CAP_STATUS32) { | |
2813 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2814 | capabilities |= CAP_STATUS32; | |
2815 | } | |
2816 | if (ses->capabilities & CAP_DFS) { | |
2817 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2818 | capabilities |= CAP_DFS; | |
2819 | } | |
2820 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2821 | ||
2822 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2823 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2824 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2825 | SecurityBlob->MessageType = NtLmNegotiate; | |
2826 | negotiate_flags = | |
2827 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2828 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2829 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 | 2830 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
fb8c4b14 | 2831 | if (sign_CIFS_PDUs) |
1da177e4 | 2832 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 2833 | /* if (ntlmv2_support) |
3979877e | 2834 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ |
1da177e4 LT |
2835 | /* setup pointers to domain name and workstation name */ |
2836 | bcc_ptr += SecurityBlobLength; | |
2837 | ||
2838 | SecurityBlob->WorkstationName.Buffer = 0; | |
2839 | SecurityBlob->WorkstationName.Length = 0; | |
2840 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2841 | ||
12b3b8ff SF |
2842 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2843 | along with username on auth request (ie the response to challenge) */ | |
2844 | SecurityBlob->DomainName.Buffer = 0; | |
2845 | SecurityBlob->DomainName.Length = 0; | |
2846 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2847 | if (ses->capabilities & CAP_UNICODE) { |
2848 | if ((long) bcc_ptr % 2) { | |
2849 | *bcc_ptr = 0; | |
2850 | bcc_ptr++; | |
2851 | } | |
2852 | ||
2853 | bytes_returned = | |
e89dc920 | 2854 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2855 | 32, nls_codepage); |
2856 | bcc_ptr += 2 * bytes_returned; | |
2857 | bytes_returned = | |
e9ff3990 | 2858 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2859 | nls_codepage); |
2860 | bcc_ptr += 2 * bytes_returned; | |
2861 | bcc_ptr += 2; /* null terminate Linux version */ | |
2862 | bytes_returned = | |
e89dc920 | 2863 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2864 | 64, nls_codepage); |
2865 | bcc_ptr += 2 * bytes_returned; | |
2866 | *(bcc_ptr + 1) = 0; | |
2867 | *(bcc_ptr + 2) = 0; | |
2868 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2869 | *(bcc_ptr + 1) = 0; | |
2870 | *(bcc_ptr + 2) = 0; | |
2871 | bcc_ptr += 2; /* null domain */ | |
2872 | } else { /* ASCII */ | |
2873 | strcpy(bcc_ptr, "Linux version "); | |
2874 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2875 | strcpy(bcc_ptr, utsname()->release); |
2876 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2877 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2878 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2879 | bcc_ptr++; /* empty domain field */ | |
2880 | *bcc_ptr = 0; | |
2881 | } | |
2882 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2883 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2884 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2885 | smb_buffer->smb_buf_length += count; | |
2886 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2887 | ||
2888 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2889 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2890 | |
2891 | if (smb_buffer_response->Status.CifsError == | |
2892 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2893 | rc = 0; | |
2894 | ||
2895 | if (rc) { | |
2896 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2897 | } else if ((smb_buffer_response->WordCount == 3) | |
2898 | || (smb_buffer_response->WordCount == 4)) { | |
2899 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2900 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2901 | ||
2902 | if (action & GUEST_LOGIN) | |
61e74801 | 2903 | cFYI(1, ("Guest login")); |
50c2f753 | 2904 | /* Do we want to set anything in SesInfo struct when guest login? */ |
1da177e4 | 2905 | |
50c2f753 SF |
2906 | bcc_ptr = pByteArea(smb_buffer_response); |
2907 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
2908 | |
2909 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2910 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
61e74801 | 2911 | cFYI(1, ("Unexpected NTLMSSP message type received %d", |
1da177e4 LT |
2912 | SecurityBlob2->MessageType)); |
2913 | } else if (ses) { | |
50c2f753 | 2914 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ |
12b3b8ff | 2915 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2916 | if ((pSMBr->resp.hdr.WordCount == 3) |
2917 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2918 | && (blob_len < | |
2919 | pSMBr->resp.ByteCount))) { | |
2920 | ||
2921 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2922 | bcc_ptr += blob_len; | |
12b3b8ff | 2923 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2924 | blob_len)); |
2925 | } | |
2926 | ||
12b3b8ff | 2927 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2928 | |
2929 | memcpy(ses->server->cryptKey, | |
2930 | SecurityBlob2->Challenge, | |
2931 | CIFS_CRYPTO_KEY_SIZE); | |
50c2f753 | 2932 | if (SecurityBlob2->NegotiateFlags & |
12b3b8ff | 2933 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) |
4b18f2a9 | 2934 | *pNTLMv2_flag = true; |
1da177e4 | 2935 | |
50c2f753 SF |
2936 | if ((SecurityBlob2->NegotiateFlags & |
2937 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
1da177e4 | 2938 | || (sign_CIFS_PDUs > 1)) |
50c2f753 SF |
2939 | ses->server->secMode |= |
2940 | SECMODE_SIGN_REQUIRED; | |
2941 | if ((SecurityBlob2->NegotiateFlags & | |
1da177e4 | 2942 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) |
50c2f753 | 2943 | ses->server->secMode |= |
1da177e4 LT |
2944 | SECMODE_SIGN_ENABLED; |
2945 | ||
2946 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2947 | if ((long) (bcc_ptr) % 2) { | |
2948 | remaining_words = | |
2949 | (BCC(smb_buffer_response) | |
2950 | - 1) / 2; | |
50c2f753 SF |
2951 | /* Must word align unicode strings */ |
2952 | bcc_ptr++; | |
1da177e4 LT |
2953 | } else { |
2954 | remaining_words = | |
2955 | BCC | |
2956 | (smb_buffer_response) / 2; | |
2957 | } | |
2958 | len = | |
2959 | UniStrnlen((wchar_t *) bcc_ptr, | |
2960 | remaining_words - 1); | |
2961 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2962 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2963 | terminating last Unicode string in response */ | |
fb8c4b14 | 2964 | if (ses->serverOS) |
a424f8bf | 2965 | kfree(ses->serverOS); |
1da177e4 | 2966 | ses->serverOS = |
e915fc49 | 2967 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2968 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2969 | (__le16 *) |
1da177e4 LT |
2970 | bcc_ptr, len, |
2971 | nls_codepage); | |
2972 | bcc_ptr += 2 * (len + 1); | |
2973 | remaining_words -= len + 1; | |
2974 | ses->serverOS[2 * len] = 0; | |
2975 | ses->serverOS[1 + (2 * len)] = 0; | |
2976 | if (remaining_words > 0) { | |
2977 | len = UniStrnlen((wchar_t *) | |
2978 | bcc_ptr, | |
2979 | remaining_words | |
2980 | - 1); | |
cd49b492 | 2981 | kfree(ses->serverNOS); |
1da177e4 | 2982 | ses->serverNOS = |
e915fc49 | 2983 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2984 | GFP_KERNEL); |
2985 | cifs_strfromUCS_le(ses-> | |
2986 | serverNOS, | |
e89dc920 | 2987 | (__le16 *) |
1da177e4 LT |
2988 | bcc_ptr, |
2989 | len, | |
2990 | nls_codepage); | |
2991 | bcc_ptr += 2 * (len + 1); | |
2992 | ses->serverNOS[2 * len] = 0; | |
2993 | ses->serverNOS[1 + | |
2994 | (2 * len)] = 0; | |
2995 | remaining_words -= len + 1; | |
2996 | if (remaining_words > 0) { | |
50c2f753 SF |
2997 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
2998 | /* last string not always null terminated | |
2999 | (for e.g. for Windows XP & 2000) */ | |
cd49b492 | 3000 | kfree(ses->serverDomain); |
1da177e4 | 3001 | ses->serverDomain = |
e915fc49 | 3002 | kzalloc(2 * |
1da177e4 LT |
3003 | (len + |
3004 | 1), | |
3005 | GFP_KERNEL); | |
3006 | cifs_strfromUCS_le | |
e89dc920 SF |
3007 | (ses->serverDomain, |
3008 | (__le16 *)bcc_ptr, | |
3009 | len, nls_codepage); | |
1da177e4 LT |
3010 | bcc_ptr += |
3011 | 2 * (len + 1); | |
e89dc920 | 3012 | ses->serverDomain[2*len] |
1da177e4 | 3013 | = 0; |
e89dc920 SF |
3014 | ses->serverDomain |
3015 | [1 + (2 * len)] | |
1da177e4 LT |
3016 | = 0; |
3017 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 3018 | else { |
cd49b492 | 3019 | kfree(ses->serverDomain); |
1da177e4 | 3020 | ses->serverDomain = |
e915fc49 | 3021 | kzalloc(2, |
1da177e4 | 3022 | GFP_KERNEL); |
a424f8bf | 3023 | } |
1da177e4 | 3024 | } else { /* no room so create dummy domain and NOS string */ |
cd49b492 | 3025 | kfree(ses->serverDomain); |
1da177e4 | 3026 | ses->serverDomain = |
e915fc49 | 3027 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 3028 | kfree(ses->serverNOS); |
1da177e4 | 3029 | ses->serverNOS = |
e915fc49 | 3030 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3031 | } |
3032 | } else { /* ASCII */ | |
3033 | len = strnlen(bcc_ptr, 1024); | |
3034 | if (((long) bcc_ptr + len) - (long) | |
3035 | pByteArea(smb_buffer_response) | |
3036 | <= BCC(smb_buffer_response)) { | |
fb8c4b14 | 3037 | if (ses->serverOS) |
a424f8bf | 3038 | kfree(ses->serverOS); |
1da177e4 | 3039 | ses->serverOS = |
e915fc49 | 3040 | kzalloc(len + 1, |
1da177e4 LT |
3041 | GFP_KERNEL); |
3042 | strncpy(ses->serverOS, | |
3043 | bcc_ptr, len); | |
3044 | ||
3045 | bcc_ptr += len; | |
3046 | bcc_ptr[0] = 0; /* null terminate string */ | |
3047 | bcc_ptr++; | |
3048 | ||
3049 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3050 | kfree(ses->serverNOS); |
1da177e4 | 3051 | ses->serverNOS = |
e915fc49 | 3052 | kzalloc(len + 1, |
1da177e4 LT |
3053 | GFP_KERNEL); |
3054 | strncpy(ses->serverNOS, bcc_ptr, len); | |
3055 | bcc_ptr += len; | |
3056 | bcc_ptr[0] = 0; | |
3057 | bcc_ptr++; | |
3058 | ||
3059 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3060 | kfree(ses->serverDomain); |
1da177e4 | 3061 | ses->serverDomain = |
e915fc49 | 3062 | kzalloc(len + 1, |
1da177e4 | 3063 | GFP_KERNEL); |
50c2f753 SF |
3064 | strncpy(ses->serverDomain, |
3065 | bcc_ptr, len); | |
1da177e4 LT |
3066 | bcc_ptr += len; |
3067 | bcc_ptr[0] = 0; | |
3068 | bcc_ptr++; | |
3069 | } else | |
3070 | cFYI(1, | |
63135e08 SF |
3071 | ("field of length %d " |
3072 | "extends beyond end of smb", | |
1da177e4 LT |
3073 | len)); |
3074 | } | |
3075 | } else { | |
50c2f753 SF |
3076 | cERROR(1, ("Security Blob Length extends beyond" |
3077 | " end of SMB")); | |
1da177e4 LT |
3078 | } |
3079 | } else { | |
3080 | cERROR(1, ("No session structure passed in.")); | |
3081 | } | |
3082 | } else { | |
61e74801 | 3083 | cERROR(1, ("Invalid Word count %d:", |
1da177e4 LT |
3084 | smb_buffer_response->WordCount)); |
3085 | rc = -EIO; | |
3086 | } | |
3087 | ||
a8a11d39 | 3088 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3089 | |
3090 | return rc; | |
3091 | } | |
3092 | static int | |
3093 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
4b18f2a9 | 3094 | char *ntlm_session_key, bool ntlmv2_flag, |
6345a3a8 | 3095 | const struct nls_table *nls_codepage) |
1da177e4 LT |
3096 | { |
3097 | struct smb_hdr *smb_buffer; | |
3098 | struct smb_hdr *smb_buffer_response; | |
3099 | SESSION_SETUP_ANDX *pSMB; | |
3100 | SESSION_SETUP_ANDX *pSMBr; | |
3101 | char *bcc_ptr; | |
3102 | char *user; | |
3103 | char *domain; | |
3104 | int rc = 0; | |
3105 | int remaining_words = 0; | |
3106 | int bytes_returned = 0; | |
3107 | int len; | |
6345a3a8 | 3108 | int SecurityBlobLength = sizeof(AUTHENTICATE_MESSAGE); |
1da177e4 LT |
3109 | PAUTHENTICATE_MESSAGE SecurityBlob; |
3110 | __u32 negotiate_flags, capabilities; | |
3111 | __u16 count; | |
3112 | ||
3113 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
fb8c4b14 | 3114 | if (ses == NULL) |
1da177e4 LT |
3115 | return -EINVAL; |
3116 | user = ses->userName; | |
3117 | domain = ses->domainName; | |
3118 | smb_buffer = cifs_buf_get(); | |
3119 | if (smb_buffer == NULL) { | |
3120 | return -ENOMEM; | |
3121 | } | |
3122 | smb_buffer_response = smb_buffer; | |
6345a3a8 CG |
3123 | pSMB = (SESSION_SETUP_ANDX *)smb_buffer; |
3124 | pSMBr = (SESSION_SETUP_ANDX *)smb_buffer_response; | |
1da177e4 LT |
3125 | |
3126 | /* send SMBsessionSetup here */ | |
3127 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
3128 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
3129 | |
3130 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3131 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
3132 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
3133 | pSMB->req.AndXCommand = 0xFF; | |
3134 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
3135 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
3136 | ||
3137 | pSMB->req.hdr.Uid = ses->Suid; | |
3138 | ||
fb8c4b14 | 3139 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3140 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3141 | ||
3142 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
6345a3a8 | 3143 | CAP_EXTENDED_SECURITY; |
1da177e4 LT |
3144 | if (ses->capabilities & CAP_UNICODE) { |
3145 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3146 | capabilities |= CAP_UNICODE; | |
3147 | } | |
3148 | if (ses->capabilities & CAP_STATUS32) { | |
3149 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3150 | capabilities |= CAP_STATUS32; | |
3151 | } | |
3152 | if (ses->capabilities & CAP_DFS) { | |
3153 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3154 | capabilities |= CAP_DFS; | |
3155 | } | |
3156 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
3157 | ||
6345a3a8 CG |
3158 | bcc_ptr = (char *)&pSMB->req.SecurityBlob; |
3159 | SecurityBlob = (PAUTHENTICATE_MESSAGE)bcc_ptr; | |
1da177e4 LT |
3160 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); |
3161 | SecurityBlob->MessageType = NtLmAuthenticate; | |
3162 | bcc_ptr += SecurityBlobLength; | |
6345a3a8 CG |
3163 | negotiate_flags = NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | |
3164 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
3165 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
fb8c4b14 | 3166 | if (sign_CIFS_PDUs) |
1da177e4 | 3167 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 3168 | if (ntlmv2_flag) |
1da177e4 LT |
3169 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; |
3170 | ||
3171 | /* setup pointers to domain name and workstation name */ | |
3172 | ||
3173 | SecurityBlob->WorkstationName.Buffer = 0; | |
3174 | SecurityBlob->WorkstationName.Length = 0; | |
3175 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
3176 | SecurityBlob->SessionKey.Length = 0; | |
3177 | SecurityBlob->SessionKey.MaximumLength = 0; | |
3178 | SecurityBlob->SessionKey.Buffer = 0; | |
3179 | ||
3180 | SecurityBlob->LmChallengeResponse.Length = 0; | |
3181 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
3182 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
3183 | ||
3184 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 3185 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 3186 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
3187 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
3188 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
3189 | SecurityBlob->NtChallengeResponse.Buffer = |
3190 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
3191 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
3192 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
3193 | |
3194 | if (ses->capabilities & CAP_UNICODE) { | |
3195 | if (domain == NULL) { | |
3196 | SecurityBlob->DomainName.Buffer = 0; | |
3197 | SecurityBlob->DomainName.Length = 0; | |
3198 | SecurityBlob->DomainName.MaximumLength = 0; | |
3199 | } else { | |
77159b4d | 3200 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 | 3201 | nls_codepage); |
77159b4d | 3202 | ln *= 2; |
1da177e4 | 3203 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3204 | cpu_to_le16(ln); |
1da177e4 LT |
3205 | SecurityBlob->DomainName.Buffer = |
3206 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3207 | bcc_ptr += ln; |
3208 | SecurityBlobLength += ln; | |
3209 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3210 | } |
3211 | if (user == NULL) { | |
3212 | SecurityBlob->UserName.Buffer = 0; | |
3213 | SecurityBlob->UserName.Length = 0; | |
3214 | SecurityBlob->UserName.MaximumLength = 0; | |
3215 | } else { | |
77159b4d | 3216 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 | 3217 | nls_codepage); |
77159b4d | 3218 | ln *= 2; |
1da177e4 | 3219 | SecurityBlob->UserName.MaximumLength = |
77159b4d | 3220 | cpu_to_le16(ln); |
1da177e4 LT |
3221 | SecurityBlob->UserName.Buffer = |
3222 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3223 | bcc_ptr += ln; |
3224 | SecurityBlobLength += ln; | |
3225 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3226 | } |
3227 | ||
63135e08 SF |
3228 | /* SecurityBlob->WorkstationName.Length = |
3229 | cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); | |
1da177e4 | 3230 | SecurityBlob->WorkstationName.Length *= 2; |
63135e08 SF |
3231 | SecurityBlob->WorkstationName.MaximumLength = |
3232 | cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
3233 | SecurityBlob->WorkstationName.Buffer = | |
3234 | cpu_to_le32(SecurityBlobLength); | |
1da177e4 LT |
3235 | bcc_ptr += SecurityBlob->WorkstationName.Length; |
3236 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
63135e08 SF |
3237 | SecurityBlob->WorkstationName.Length = |
3238 | cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
1da177e4 LT |
3239 | |
3240 | if ((long) bcc_ptr % 2) { | |
3241 | *bcc_ptr = 0; | |
3242 | bcc_ptr++; | |
3243 | } | |
3244 | bytes_returned = | |
e89dc920 | 3245 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
3246 | 32, nls_codepage); |
3247 | bcc_ptr += 2 * bytes_returned; | |
3248 | bytes_returned = | |
e9ff3990 | 3249 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
3250 | nls_codepage); |
3251 | bcc_ptr += 2 * bytes_returned; | |
3252 | bcc_ptr += 2; /* null term version string */ | |
3253 | bytes_returned = | |
e89dc920 | 3254 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
3255 | 64, nls_codepage); |
3256 | bcc_ptr += 2 * bytes_returned; | |
3257 | *(bcc_ptr + 1) = 0; | |
3258 | *(bcc_ptr + 2) = 0; | |
3259 | bcc_ptr += 2; /* null terminate network opsys string */ | |
3260 | *(bcc_ptr + 1) = 0; | |
3261 | *(bcc_ptr + 2) = 0; | |
3262 | bcc_ptr += 2; /* null domain */ | |
3263 | } else { /* ASCII */ | |
3264 | if (domain == NULL) { | |
3265 | SecurityBlob->DomainName.Buffer = 0; | |
3266 | SecurityBlob->DomainName.Length = 0; | |
3267 | SecurityBlob->DomainName.MaximumLength = 0; | |
3268 | } else { | |
77159b4d | 3269 | __u16 ln; |
1da177e4 LT |
3270 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; |
3271 | strncpy(bcc_ptr, domain, 63); | |
77159b4d | 3272 | ln = strnlen(domain, 64); |
1da177e4 | 3273 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3274 | cpu_to_le16(ln); |
1da177e4 LT |
3275 | SecurityBlob->DomainName.Buffer = |
3276 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3277 | bcc_ptr += ln; |
3278 | SecurityBlobLength += ln; | |
3279 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3280 | } |
3281 | if (user == NULL) { | |
3282 | SecurityBlob->UserName.Buffer = 0; | |
3283 | SecurityBlob->UserName.Length = 0; | |
3284 | SecurityBlob->UserName.MaximumLength = 0; | |
3285 | } else { | |
77159b4d | 3286 | __u16 ln; |
1da177e4 | 3287 | strncpy(bcc_ptr, user, 63); |
77159b4d SF |
3288 | ln = strnlen(user, 64); |
3289 | SecurityBlob->UserName.MaximumLength = cpu_to_le16(ln); | |
1da177e4 | 3290 | SecurityBlob->UserName.Buffer = |
77159b4d SF |
3291 | cpu_to_le32(SecurityBlobLength); |
3292 | bcc_ptr += ln; | |
3293 | SecurityBlobLength += ln; | |
3294 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3295 | } |
3296 | /* BB fill in our workstation name if known BB */ | |
3297 | ||
3298 | strcpy(bcc_ptr, "Linux version "); | |
3299 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
3300 | strcpy(bcc_ptr, utsname()->release); |
3301 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
3302 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
3303 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
3304 | bcc_ptr++; /* null domain */ | |
3305 | *bcc_ptr = 0; | |
3306 | } | |
3307 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
3308 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
3309 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
3310 | smb_buffer->smb_buf_length += count; | |
3311 | pSMB->req.ByteCount = cpu_to_le16(count); | |
3312 | ||
3313 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 3314 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 | 3315 | if (rc) { |
6345a3a8 CG |
3316 | /* rc = map_smb_to_linux_error(smb_buffer_response) done in SendReceive now */ |
3317 | } else if ((smb_buffer_response->WordCount == 3) || | |
3318 | (smb_buffer_response->WordCount == 4)) { | |
1da177e4 | 3319 | __u16 action = le16_to_cpu(pSMBr->resp.Action); |
6345a3a8 | 3320 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); |
1da177e4 | 3321 | if (action & GUEST_LOGIN) |
61e74801 | 3322 | cFYI(1, ("Guest login")); /* BB Should we set anything |
50c2f753 SF |
3323 | in SesInfo struct ? */ |
3324 | /* if (SecurityBlob2->MessageType != NtLm??) { | |
3325 | cFYI("Unexpected message type on auth response is %d")); | |
3326 | } */ | |
3327 | ||
1da177e4 LT |
3328 | if (ses) { |
3329 | cFYI(1, | |
50c2f753 | 3330 | ("Check challenge UID %d vs auth response UID %d", |
1da177e4 | 3331 | ses->Suid, smb_buffer_response->Uid)); |
50c2f753 SF |
3332 | /* UID left in wire format */ |
3333 | ses->Suid = smb_buffer_response->Uid; | |
3334 | bcc_ptr = pByteArea(smb_buffer_response); | |
3335 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
3336 | if ((pSMBr->resp.hdr.WordCount == 3) |
3337 | || ((pSMBr->resp.hdr.WordCount == 4) | |
3338 | && (blob_len < | |
3339 | pSMBr->resp.ByteCount))) { | |
3340 | if (pSMBr->resp.hdr.WordCount == 4) { | |
3341 | bcc_ptr += | |
3342 | blob_len; | |
3343 | cFYI(1, | |
3344 | ("Security Blob Length %d ", | |
3345 | blob_len)); | |
3346 | } | |
3347 | ||
3348 | cFYI(1, | |
3349 | ("NTLMSSP response to Authenticate ")); | |
3350 | ||
3351 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3352 | if ((long) (bcc_ptr) % 2) { | |
3353 | remaining_words = | |
3354 | (BCC(smb_buffer_response) | |
3355 | - 1) / 2; | |
3356 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
3357 | } else { | |
3358 | remaining_words = BCC(smb_buffer_response) / 2; | |
3359 | } | |
77159b4d SF |
3360 | len = UniStrnlen((wchar_t *) bcc_ptr, |
3361 | remaining_words - 1); | |
1da177e4 LT |
3362 | /* We look for obvious messed up bcc or strings in response so we do not go off |
3363 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
3364 | terminating last Unicode string in response */ | |
fb8c4b14 | 3365 | if (ses->serverOS) |
08775834 | 3366 | kfree(ses->serverOS); |
1da177e4 | 3367 | ses->serverOS = |
e915fc49 | 3368 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 3369 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 3370 | (__le16 *) |
1da177e4 LT |
3371 | bcc_ptr, len, |
3372 | nls_codepage); | |
3373 | bcc_ptr += 2 * (len + 1); | |
3374 | remaining_words -= len + 1; | |
3375 | ses->serverOS[2 * len] = 0; | |
3376 | ses->serverOS[1 + (2 * len)] = 0; | |
3377 | if (remaining_words > 0) { | |
3378 | len = UniStrnlen((wchar_t *) | |
3379 | bcc_ptr, | |
3380 | remaining_words | |
3381 | - 1); | |
cd49b492 | 3382 | kfree(ses->serverNOS); |
1da177e4 | 3383 | ses->serverNOS = |
e915fc49 | 3384 | kzalloc(2 * (len + 1), |
1da177e4 LT |
3385 | GFP_KERNEL); |
3386 | cifs_strfromUCS_le(ses-> | |
3387 | serverNOS, | |
e89dc920 | 3388 | (__le16 *) |
1da177e4 LT |
3389 | bcc_ptr, |
3390 | len, | |
3391 | nls_codepage); | |
3392 | bcc_ptr += 2 * (len + 1); | |
3393 | ses->serverNOS[2 * len] = 0; | |
3394 | ses->serverNOS[1+(2*len)] = 0; | |
3395 | remaining_words -= len + 1; | |
3396 | if (remaining_words > 0) { | |
50c2f753 | 3397 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 3398 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ |
fb8c4b14 | 3399 | if (ses->serverDomain) |
a424f8bf | 3400 | kfree(ses->serverDomain); |
1da177e4 | 3401 | ses->serverDomain = |
e915fc49 | 3402 | kzalloc(2 * |
1da177e4 LT |
3403 | (len + |
3404 | 1), | |
3405 | GFP_KERNEL); | |
3406 | cifs_strfromUCS_le | |
3407 | (ses-> | |
3408 | serverDomain, | |
e89dc920 | 3409 | (__le16 *) |
1da177e4 LT |
3410 | bcc_ptr, len, |
3411 | nls_codepage); | |
3412 | bcc_ptr += | |
3413 | 2 * (len + 1); | |
3414 | ses-> | |
3415 | serverDomain[2 | |
3416 | * len] | |
3417 | = 0; | |
3418 | ses-> | |
3419 | serverDomain[1 | |
3420 | + | |
3421 | (2 | |
3422 | * | |
3423 | len)] | |
3424 | = 0; | |
3425 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 3426 | else { |
fb8c4b14 | 3427 | if (ses->serverDomain) |
a424f8bf | 3428 | kfree(ses->serverDomain); |
e915fc49 | 3429 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 3430 | } |
1da177e4 | 3431 | } else { /* no room so create dummy domain and NOS string */ |
fb8c4b14 | 3432 | if (ses->serverDomain) |
a424f8bf | 3433 | kfree(ses->serverDomain); |
e915fc49 | 3434 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 3435 | kfree(ses->serverNOS); |
e915fc49 | 3436 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3437 | } |
3438 | } else { /* ASCII */ | |
3439 | len = strnlen(bcc_ptr, 1024); | |
50c2f753 SF |
3440 | if (((long) bcc_ptr + len) - |
3441 | (long) pByteArea(smb_buffer_response) | |
63135e08 | 3442 | <= BCC(smb_buffer_response)) { |
fb8c4b14 | 3443 | if (ses->serverOS) |
a424f8bf | 3444 | kfree(ses->serverOS); |
77159b4d | 3445 | ses->serverOS = kzalloc(len + 1, GFP_KERNEL); |
1da177e4 LT |
3446 | strncpy(ses->serverOS,bcc_ptr, len); |
3447 | ||
3448 | bcc_ptr += len; | |
3449 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3450 | bcc_ptr++; | |
3451 | ||
3452 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3453 | kfree(ses->serverNOS); |
50c2f753 SF |
3454 | ses->serverNOS = kzalloc(len+1, |
3455 | GFP_KERNEL); | |
63135e08 SF |
3456 | strncpy(ses->serverNOS, |
3457 | bcc_ptr, len); | |
1da177e4 LT |
3458 | bcc_ptr += len; |
3459 | bcc_ptr[0] = 0; | |
3460 | bcc_ptr++; | |
3461 | ||
3462 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 3463 | if (ses->serverDomain) |
a424f8bf | 3464 | kfree(ses->serverDomain); |
63135e08 SF |
3465 | ses->serverDomain = |
3466 | kzalloc(len+1, | |
3467 | GFP_KERNEL); | |
3468 | strncpy(ses->serverDomain, | |
3469 | bcc_ptr, len); | |
1da177e4 LT |
3470 | bcc_ptr += len; |
3471 | bcc_ptr[0] = 0; | |
3472 | bcc_ptr++; | |
3473 | } else | |
6345a3a8 | 3474 | cFYI(1, ("field of length %d " |
63135e08 | 3475 | "extends beyond end of smb ", |
1da177e4 LT |
3476 | len)); |
3477 | } | |
3478 | } else { | |
6345a3a8 | 3479 | cERROR(1, ("Security Blob extends beyond end " |
63135e08 | 3480 | "of SMB")); |
1da177e4 LT |
3481 | } |
3482 | } else { | |
3483 | cERROR(1, ("No session structure passed in.")); | |
3484 | } | |
3485 | } else { | |
6345a3a8 | 3486 | cERROR(1, ("Invalid Word count %d: ", |
1da177e4 LT |
3487 | smb_buffer_response->WordCount)); |
3488 | rc = -EIO; | |
3489 | } | |
3490 | ||
a8a11d39 | 3491 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3492 | |
3493 | return rc; | |
3494 | } | |
3495 | ||
3496 | int | |
3497 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3498 | const char *tree, struct cifsTconInfo *tcon, | |
3499 | const struct nls_table *nls_codepage) | |
3500 | { | |
3501 | struct smb_hdr *smb_buffer; | |
3502 | struct smb_hdr *smb_buffer_response; | |
3503 | TCONX_REQ *pSMB; | |
3504 | TCONX_RSP *pSMBr; | |
3505 | unsigned char *bcc_ptr; | |
3506 | int rc = 0; | |
3507 | int length; | |
3508 | __u16 count; | |
3509 | ||
3510 | if (ses == NULL) | |
3511 | return -EIO; | |
3512 | ||
3513 | smb_buffer = cifs_buf_get(); | |
3514 | if (smb_buffer == NULL) { | |
3515 | return -ENOMEM; | |
3516 | } | |
3517 | smb_buffer_response = smb_buffer; | |
3518 | ||
3519 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3520 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3521 | |
3522 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3523 | smb_buffer->Uid = ses->Suid; |
3524 | pSMB = (TCONX_REQ *) smb_buffer; | |
3525 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3526 | ||
3527 | pSMB->AndXCommand = 0xFF; | |
3528 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3529 | bcc_ptr = &pSMB->Password[0]; |
fb8c4b14 | 3530 | if ((ses->server->secMode) & SECMODE_USER) { |
eeac8047 | 3531 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
7c7b25bc | 3532 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3533 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3534 | /* already aligned so no need to do it below */ |
eeac8047 | 3535 | } else { |
7c7b25bc | 3536 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3537 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3538 | specified as required (when that support is added to | |
3539 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3540 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3541 | by Samba (not sure whether other servers allow |
3542 | NTLMv2 password here) */ | |
7c7b25bc | 3543 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
50c2f753 | 3544 | if ((extended_security & CIFSSEC_MAY_LANMAN) && |
00e485b0 JL |
3545 | (ses->server->secType == LANMAN)) |
3546 | calc_lanman_hash(tcon->password, ses->server->cryptKey, | |
4e53a3fb JL |
3547 | ses->server->secMode & |
3548 | SECMODE_PW_ENCRYPT ? true : false, | |
3549 | bcc_ptr); | |
7c7b25bc SF |
3550 | else |
3551 | #endif /* CIFS_WEAK_PW_HASH */ | |
00e485b0 | 3552 | SMBNTencrypt(tcon->password, ses->server->cryptKey, |
eeac8047 SF |
3553 | bcc_ptr); |
3554 | ||
7c7b25bc | 3555 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
fb8c4b14 | 3556 | if (ses->capabilities & CAP_UNICODE) { |
7c7b25bc SF |
3557 | /* must align unicode strings */ |
3558 | *bcc_ptr = 0; /* null byte password */ | |
3559 | bcc_ptr++; | |
3560 | } | |
eeac8047 | 3561 | } |
1da177e4 | 3562 | |
50c2f753 | 3563 | if (ses->server->secMode & |
a878fb22 | 3564 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3565 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3566 | ||
3567 | if (ses->capabilities & CAP_STATUS32) { | |
3568 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3569 | } | |
3570 | if (ses->capabilities & CAP_DFS) { | |
3571 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3572 | } | |
3573 | if (ses->capabilities & CAP_UNICODE) { | |
3574 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3575 | length = | |
50c2f753 SF |
3576 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3577 | 6 /* max utf8 char length in bytes */ * | |
a878fb22 SF |
3578 | (/* server len*/ + 256 /* share len */), nls_codepage); |
3579 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3580 | bcc_ptr += 2; /* skip trailing null */ |
3581 | } else { /* ASCII */ | |
1da177e4 LT |
3582 | strcpy(bcc_ptr, tree); |
3583 | bcc_ptr += strlen(tree) + 1; | |
3584 | } | |
3585 | strcpy(bcc_ptr, "?????"); | |
3586 | bcc_ptr += strlen("?????"); | |
3587 | bcc_ptr += 1; | |
3588 | count = bcc_ptr - &pSMB->Password[0]; | |
3589 | pSMB->hdr.smb_buf_length += count; | |
3590 | pSMB->ByteCount = cpu_to_le16(count); | |
3591 | ||
133672ef SF |
3592 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, |
3593 | CIFS_STD_OP); | |
1da177e4 LT |
3594 | |
3595 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3596 | /* above now done in SendReceive */ | |
3597 | if ((rc == 0) && (tcon != NULL)) { | |
3598 | tcon->tidStatus = CifsGood; | |
3b795210 | 3599 | tcon->need_reconnect = false; |
1da177e4 LT |
3600 | tcon->tid = smb_buffer_response->Tid; |
3601 | bcc_ptr = pByteArea(smb_buffer_response); | |
3602 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
50c2f753 | 3603 | /* skip service field (NB: this field is always ASCII) */ |
7f8ed420 SF |
3604 | if (length == 3) { |
3605 | if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') && | |
3606 | (bcc_ptr[2] == 'C')) { | |
3607 | cFYI(1, ("IPC connection")); | |
3608 | tcon->ipc = 1; | |
3609 | } | |
3610 | } else if (length == 2) { | |
3611 | if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) { | |
3612 | /* the most common case */ | |
3613 | cFYI(1, ("disk share connection")); | |
3614 | } | |
3615 | } | |
50c2f753 | 3616 | bcc_ptr += length + 1; |
1da177e4 LT |
3617 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
3618 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3619 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3620 | if ((bcc_ptr + (2 * length)) - | |
3621 | pByteArea(smb_buffer_response) <= | |
3622 | BCC(smb_buffer_response)) { | |
f99d49ad | 3623 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3624 | tcon->nativeFileSystem = |
e915fc49 | 3625 | kzalloc(length + 2, GFP_KERNEL); |
88f370a6 SF |
3626 | if (tcon->nativeFileSystem) |
3627 | cifs_strfromUCS_le( | |
3628 | tcon->nativeFileSystem, | |
3629 | (__le16 *) bcc_ptr, | |
3630 | length, nls_codepage); | |
1da177e4 LT |
3631 | bcc_ptr += 2 * length; |
3632 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3633 | bcc_ptr[1] = 0; | |
3634 | bcc_ptr += 2; | |
3635 | } | |
50c2f753 | 3636 | /* else do not bother copying these information fields*/ |
1da177e4 LT |
3637 | } else { |
3638 | length = strnlen(bcc_ptr, 1024); | |
3639 | if ((bcc_ptr + length) - | |
3640 | pByteArea(smb_buffer_response) <= | |
3641 | BCC(smb_buffer_response)) { | |
f99d49ad | 3642 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3643 | tcon->nativeFileSystem = |
e915fc49 | 3644 | kzalloc(length + 1, GFP_KERNEL); |
88f370a6 SF |
3645 | if (tcon->nativeFileSystem) |
3646 | strncpy(tcon->nativeFileSystem, bcc_ptr, | |
3647 | length); | |
1da177e4 | 3648 | } |
50c2f753 | 3649 | /* else do not bother copying these information fields*/ |
1da177e4 | 3650 | } |
fb8c4b14 | 3651 | if ((smb_buffer_response->WordCount == 3) || |
1a4e15a0 SF |
3652 | (smb_buffer_response->WordCount == 7)) |
3653 | /* field is in same location */ | |
3979877e SF |
3654 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
3655 | else | |
3656 | tcon->Flags = 0; | |
1da177e4 LT |
3657 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3658 | } else if ((rc == 0) && tcon == NULL) { | |
50c2f753 | 3659 | /* all we need to save for IPC$ connection */ |
1da177e4 LT |
3660 | ses->ipc_tid = smb_buffer_response->Tid; |
3661 | } | |
3662 | ||
a8a11d39 | 3663 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3664 | return rc; |
3665 | } | |
3666 | ||
3667 | int | |
3668 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3669 | { | |
3670 | int rc = 0; | |
50c2f753 | 3671 | char *tmp; |
1da177e4 | 3672 | |
f1987b44 JL |
3673 | if (cifs_sb->tcon) |
3674 | cifs_put_tcon(cifs_sb->tcon); | |
50c2f753 | 3675 | |
1da177e4 | 3676 | cifs_sb->tcon = NULL; |
2fe87f02 SF |
3677 | tmp = cifs_sb->prepath; |
3678 | cifs_sb->prepathlen = 0; | |
3679 | cifs_sb->prepath = NULL; | |
3680 | kfree(tmp); | |
1da177e4 | 3681 | |
88e7d705 | 3682 | return rc; |
50c2f753 | 3683 | } |
1da177e4 LT |
3684 | |
3685 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
50c2f753 | 3686 | struct nls_table *nls_info) |
1da177e4 LT |
3687 | { |
3688 | int rc = 0; | |
7c7b25bc | 3689 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
4b18f2a9 | 3690 | bool ntlmv2_flag = false; |
ad009ac9 | 3691 | int first_time = 0; |
cb7691b6 | 3692 | struct TCP_Server_Info *server = pSesInfo->server; |
1da177e4 LT |
3693 | |
3694 | /* what if server changes its buffer size after dropping the session? */ | |
cb7691b6 | 3695 | if (server->maxBuf == 0) /* no need to send on reconnect */ { |
1da177e4 | 3696 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
cb7691b6 JL |
3697 | if (rc == -EAGAIN) { |
3698 | /* retry only once on 1st time connection */ | |
1da177e4 | 3699 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
50c2f753 | 3700 | if (rc == -EAGAIN) |
1da177e4 LT |
3701 | rc = -EHOSTDOWN; |
3702 | } | |
fb8c4b14 | 3703 | if (rc == 0) { |
1da177e4 | 3704 | spin_lock(&GlobalMid_Lock); |
cb7691b6 JL |
3705 | if (server->tcpStatus != CifsExiting) |
3706 | server->tcpStatus = CifsGood; | |
1da177e4 LT |
3707 | else |
3708 | rc = -EHOSTDOWN; | |
3709 | spin_unlock(&GlobalMid_Lock); | |
3710 | ||
3711 | } | |
ad009ac9 | 3712 | first_time = 1; |
1da177e4 | 3713 | } |
26b994fa SF |
3714 | |
3715 | if (rc) | |
3716 | goto ss_err_exit; | |
3717 | ||
3718 | pSesInfo->flags = 0; | |
cb7691b6 | 3719 | pSesInfo->capabilities = server->capabilities; |
26b994fa SF |
3720 | if (linuxExtEnabled == 0) |
3721 | pSesInfo->capabilities &= (~CAP_UNIX); | |
ad009ac9 | 3722 | /* pSesInfo->sequence_number = 0;*/ |
26b994fa | 3723 | cFYI(1, ("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", |
cb7691b6 JL |
3724 | server->secMode, server->capabilities, server->timeAdj)); |
3725 | ||
26b994fa SF |
3726 | if (experimEnabled < 2) |
3727 | rc = CIFS_SessSetup(xid, pSesInfo, first_time, nls_info); | |
3728 | else if (extended_security | |
3729 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
cb7691b6 | 3730 | && (server->secType == NTLMSSP)) { |
26b994fa SF |
3731 | rc = -EOPNOTSUPP; |
3732 | } else if (extended_security | |
3733 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
cb7691b6 | 3734 | && (server->secType == RawNTLMSSP)) { |
26b994fa SF |
3735 | cFYI(1, ("NTLMSSP sesssetup")); |
3736 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, pSesInfo, &ntlmv2_flag, | |
3737 | nls_info); | |
3738 | if (!rc) { | |
3739 | if (ntlmv2_flag) { | |
3740 | char *v2_response; | |
3741 | cFYI(1, ("more secure NTLM ver2 hash")); | |
3742 | if (CalcNTLMv2_partial_mac_key(pSesInfo, | |
3743 | nls_info)) { | |
3744 | rc = -ENOMEM; | |
3745 | goto ss_err_exit; | |
3746 | } else | |
3747 | v2_response = kmalloc(16 + 64 /* blob*/, | |
3748 | GFP_KERNEL); | |
3749 | if (v2_response) { | |
3750 | CalcNTLMv2_response(pSesInfo, | |
3751 | v2_response); | |
3752 | /* if (first_time) | |
3753 | cifs_calculate_ntlmv2_mac_key */ | |
3754 | kfree(v2_response); | |
1da177e4 | 3755 | /* BB Put dummy sig in SessSetup PDU? */ |
1da177e4 | 3756 | } else { |
26b994fa SF |
3757 | rc = -ENOMEM; |
3758 | goto ss_err_exit; | |
1da177e4 | 3759 | } |
26b994fa SF |
3760 | |
3761 | } else { | |
3762 | SMBNTencrypt(pSesInfo->password, | |
cb7691b6 | 3763 | server->cryptKey, |
26b994fa SF |
3764 | ntlm_session_key); |
3765 | ||
3766 | if (first_time) | |
3767 | cifs_calculate_mac_key( | |
cb7691b6 | 3768 | &server->mac_signing_key, |
26b994fa SF |
3769 | ntlm_session_key, |
3770 | pSesInfo->password); | |
3771 | } | |
1da177e4 LT |
3772 | /* for better security the weaker lanman hash not sent |
3773 | in AuthSessSetup so we no longer calculate it */ | |
3774 | ||
26b994fa SF |
3775 | rc = CIFSNTLMSSPAuthSessSetup(xid, pSesInfo, |
3776 | ntlm_session_key, | |
3777 | ntlmv2_flag, | |
3778 | nls_info); | |
3779 | } | |
3780 | } else { /* old style NTLM 0.12 session setup */ | |
cb7691b6 | 3781 | SMBNTencrypt(pSesInfo->password, server->cryptKey, |
26b994fa | 3782 | ntlm_session_key); |
1da177e4 | 3783 | |
26b994fa | 3784 | if (first_time) |
cb7691b6 JL |
3785 | cifs_calculate_mac_key(&server->mac_signing_key, |
3786 | ntlm_session_key, | |
3787 | pSesInfo->password); | |
ad009ac9 | 3788 | |
26b994fa SF |
3789 | rc = CIFSSessSetup(xid, pSesInfo, ntlm_session_key, nls_info); |
3790 | } | |
3791 | if (rc) { | |
3792 | cERROR(1, ("Send error in SessSetup = %d", rc)); | |
3793 | } else { | |
3794 | cFYI(1, ("CIFS Session Established successfully")); | |
469ee614 | 3795 | spin_lock(&GlobalMid_Lock); |
1da177e4 | 3796 | pSesInfo->status = CifsGood; |
3b795210 | 3797 | pSesInfo->need_reconnect = false; |
469ee614 | 3798 | spin_unlock(&GlobalMid_Lock); |
1da177e4 | 3799 | } |
26b994fa | 3800 | |
1da177e4 LT |
3801 | ss_err_exit: |
3802 | return rc; | |
3803 | } | |
3804 |