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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/connect.c | |
3 | * | |
366781c1 | 4 | * Copyright (C) International Business Machines Corp., 2002,2008 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * This library is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU Lesser General Public License as published | |
9 | * by the Free Software Foundation; either version 2.1 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This library is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
15 | * the GNU Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public License | |
18 | * along with this library; if not, write to the Free Software | |
fb8c4b14 | 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
1da177e4 LT |
20 | */ |
21 | #include <linux/fs.h> | |
22 | #include <linux/net.h> | |
23 | #include <linux/string.h> | |
24 | #include <linux/list.h> | |
25 | #include <linux/wait.h> | |
26 | #include <linux/ipv6.h> | |
27 | #include <linux/pagemap.h> | |
28 | #include <linux/ctype.h> | |
29 | #include <linux/utsname.h> | |
30 | #include <linux/mempool.h> | |
b8643e1b | 31 | #include <linux/delay.h> |
f191401f | 32 | #include <linux/completion.h> |
aaf737ad | 33 | #include <linux/kthread.h> |
0ae0efad | 34 | #include <linux/pagevec.h> |
7dfb7103 | 35 | #include <linux/freezer.h> |
1da177e4 LT |
36 | #include <asm/uaccess.h> |
37 | #include <asm/processor.h> | |
38 | #include "cifspdu.h" | |
39 | #include "cifsglob.h" | |
40 | #include "cifsproto.h" | |
41 | #include "cifs_unicode.h" | |
42 | #include "cifs_debug.h" | |
43 | #include "cifs_fs_sb.h" | |
44 | #include "ntlmssp.h" | |
45 | #include "nterr.h" | |
46 | #include "rfc1002pdu.h" | |
a2653eba | 47 | #include "cn_cifs.h" |
1da177e4 LT |
48 | |
49 | #define CIFS_PORT 445 | |
50 | #define RFC1001_PORT 139 | |
51 | ||
1da177e4 LT |
52 | extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, |
53 | unsigned char *p24); | |
54 | ||
55 | extern mempool_t *cifs_req_poolp; | |
56 | ||
57 | struct smb_vol { | |
58 | char *username; | |
59 | char *password; | |
60 | char *domainname; | |
61 | char *UNC; | |
62 | char *UNCip; | |
95b1cb90 | 63 | char *in6_addr; /* ipv6 address as human readable form of in6_addr */ |
1da177e4 LT |
64 | char *iocharset; /* local code page for mapping to and from Unicode */ |
65 | char source_rfc1001_name[16]; /* netbios name of client */ | |
a10faeb2 | 66 | char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */ |
1da177e4 LT |
67 | uid_t linux_uid; |
68 | gid_t linux_gid; | |
69 | mode_t file_mode; | |
70 | mode_t dir_mode; | |
189acaae | 71 | unsigned secFlg; |
4b18f2a9 SF |
72 | bool rw:1; |
73 | bool retry:1; | |
74 | bool intr:1; | |
75 | bool setuids:1; | |
76 | bool override_uid:1; | |
77 | bool override_gid:1; | |
d0a9c078 | 78 | bool dynperm:1; |
4b18f2a9 SF |
79 | bool noperm:1; |
80 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
81 | bool cifs_acl:1; | |
82 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ | |
83 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
84 | bool direct_io:1; | |
95b1cb90 SF |
85 | bool remap:1; /* set to remap seven reserved chars in filenames */ |
86 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ | |
4b18f2a9 SF |
87 | bool no_linux_ext:1; |
88 | bool sfu_emul:1; | |
95b1cb90 SF |
89 | bool nullauth:1; /* attempt to authenticate with null user */ |
90 | bool nocase:1; /* request case insensitive filenames */ | |
91 | bool nobrl:1; /* disable sending byte range locks to srv */ | |
92 | bool seal:1; /* request transport encryption on share */ | |
84210e91 SF |
93 | bool nodfs:1; /* Do not request DFS, even if available */ |
94 | bool local_lease:1; /* check leases only on local system, not remote */ | |
edf1ae40 SF |
95 | bool noblocksnd:1; |
96 | bool noautotune:1; | |
1da177e4 LT |
97 | unsigned int rsize; |
98 | unsigned int wsize; | |
99 | unsigned int sockopt; | |
100 | unsigned short int port; | |
fb8c4b14 | 101 | char *prepath; |
1da177e4 LT |
102 | }; |
103 | ||
fb8c4b14 | 104 | static int ipv4_connect(struct sockaddr_in *psin_server, |
1da177e4 | 105 | struct socket **csocket, |
fb8c4b14 | 106 | char *netb_name, |
edf1ae40 SF |
107 | char *server_netb_name, |
108 | bool noblocksnd, | |
109 | bool nosndbuf); /* ipv6 never set sndbuf size */ | |
fb8c4b14 | 110 | static int ipv6_connect(struct sockaddr_in6 *psin_server, |
edf1ae40 | 111 | struct socket **csocket, bool noblocksnd); |
1da177e4 LT |
112 | |
113 | ||
fb8c4b14 | 114 | /* |
1da177e4 | 115 | * cifs tcp session reconnection |
fb8c4b14 | 116 | * |
1da177e4 LT |
117 | * mark tcp session as reconnecting so temporarily locked |
118 | * mark all smb sessions as reconnecting for tcp session | |
119 | * reconnect tcp session | |
120 | * wake up waiters on reconnection? - (not needed currently) | |
121 | */ | |
122 | ||
2cd646a2 | 123 | static int |
1da177e4 LT |
124 | cifs_reconnect(struct TCP_Server_Info *server) |
125 | { | |
126 | int rc = 0; | |
127 | struct list_head *tmp; | |
128 | struct cifsSesInfo *ses; | |
129 | struct cifsTconInfo *tcon; | |
fb8c4b14 | 130 | struct mid_q_entry *mid_entry; |
50c2f753 | 131 | |
1da177e4 | 132 | spin_lock(&GlobalMid_Lock); |
469ee614 | 133 | if (server->tcpStatus == CifsExiting) { |
fb8c4b14 | 134 | /* the demux thread will exit normally |
1da177e4 LT |
135 | next time through the loop */ |
136 | spin_unlock(&GlobalMid_Lock); | |
137 | return rc; | |
138 | } else | |
139 | server->tcpStatus = CifsNeedReconnect; | |
140 | spin_unlock(&GlobalMid_Lock); | |
141 | server->maxBuf = 0; | |
142 | ||
e4eb295d | 143 | cFYI(1, ("Reconnecting tcp session")); |
1da177e4 LT |
144 | |
145 | /* before reconnecting the tcp session, mark the smb session (uid) | |
146 | and the tid bad so they are not used until reconnected */ | |
147 | read_lock(&GlobalSMBSeslock); | |
148 | list_for_each(tmp, &GlobalSMBSessionList) { | |
149 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
150 | if (ses->server) { | |
151 | if (ses->server == server) { | |
152 | ses->status = CifsNeedReconnect; | |
153 | ses->ipc_tid = 0; | |
154 | } | |
155 | } | |
156 | /* else tcp and smb sessions need reconnection */ | |
157 | } | |
158 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
159 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); | |
ad8b15f0 | 160 | if ((tcon->ses) && (tcon->ses->server == server)) |
1da177e4 | 161 | tcon->tidStatus = CifsNeedReconnect; |
1da177e4 LT |
162 | } |
163 | read_unlock(&GlobalSMBSeslock); | |
164 | /* do not want to be sending data on a socket we are freeing */ | |
fb8c4b14 SF |
165 | down(&server->tcpSem); |
166 | if (server->ssocket) { | |
467a8f8d | 167 | cFYI(1, ("State: 0x%x Flags: 0x%lx", server->ssocket->state, |
1da177e4 | 168 | server->ssocket->flags)); |
91cf45f0 | 169 | kernel_sock_shutdown(server->ssocket, SHUT_WR); |
fb8c4b14 | 170 | cFYI(1, ("Post shutdown state: 0x%x Flags: 0x%lx", |
467a8f8d | 171 | server->ssocket->state, |
1da177e4 LT |
172 | server->ssocket->flags)); |
173 | sock_release(server->ssocket); | |
174 | server->ssocket = NULL; | |
175 | } | |
176 | ||
177 | spin_lock(&GlobalMid_Lock); | |
178 | list_for_each(tmp, &server->pending_mid_q) { | |
179 | mid_entry = list_entry(tmp, struct | |
180 | mid_q_entry, | |
181 | qhead); | |
ad8b15f0 | 182 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { |
09d1db5c SF |
183 | /* Mark other intransit requests as needing |
184 | retry so we do not immediately mark the | |
185 | session bad again (ie after we reconnect | |
186 | below) as they timeout too */ | |
ad8b15f0 | 187 | mid_entry->midState = MID_RETRY_NEEDED; |
1da177e4 LT |
188 | } |
189 | } | |
190 | spin_unlock(&GlobalMid_Lock); | |
fb8c4b14 | 191 | up(&server->tcpSem); |
1da177e4 | 192 | |
469ee614 JL |
193 | while ((server->tcpStatus != CifsExiting) && |
194 | (server->tcpStatus != CifsGood)) { | |
6c3d8909 | 195 | try_to_freeze(); |
fb8c4b14 SF |
196 | if (server->protocolType == IPV6) { |
197 | rc = ipv6_connect(&server->addr.sockAddr6, | |
edf1ae40 | 198 | &server->ssocket, server->noautotune); |
1da177e4 | 199 | } else { |
fb8c4b14 | 200 | rc = ipv4_connect(&server->addr.sockAddr, |
1da177e4 | 201 | &server->ssocket, |
a10faeb2 | 202 | server->workstation_RFC1001_name, |
edf1ae40 SF |
203 | server->server_RFC1001_name, |
204 | server->noblocksnd, server->noautotune); | |
1da177e4 | 205 | } |
fb8c4b14 SF |
206 | if (rc) { |
207 | cFYI(1, ("reconnect error %d", rc)); | |
0cb766ae | 208 | msleep(3000); |
1da177e4 LT |
209 | } else { |
210 | atomic_inc(&tcpSesReconnectCount); | |
211 | spin_lock(&GlobalMid_Lock); | |
469ee614 | 212 | if (server->tcpStatus != CifsExiting) |
1da177e4 | 213 | server->tcpStatus = CifsGood; |
ad009ac9 | 214 | server->sequence_number = 0; |
fb8c4b14 | 215 | spin_unlock(&GlobalMid_Lock); |
1da177e4 LT |
216 | /* atomic_set(&server->inFlight,0);*/ |
217 | wake_up(&server->response_q); | |
218 | } | |
219 | } | |
220 | return rc; | |
221 | } | |
222 | ||
fb8c4b14 | 223 | /* |
e4eb295d SF |
224 | return codes: |
225 | 0 not a transact2, or all data present | |
226 | >0 transact2 with that much data missing | |
227 | -EINVAL = invalid transact2 | |
228 | ||
229 | */ | |
fb8c4b14 | 230 | static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) |
e4eb295d | 231 | { |
fb8c4b14 SF |
232 | struct smb_t2_rsp *pSMBt; |
233 | int total_data_size; | |
e4eb295d SF |
234 | int data_in_this_rsp; |
235 | int remaining; | |
236 | ||
fb8c4b14 | 237 | if (pSMB->Command != SMB_COM_TRANSACTION2) |
e4eb295d SF |
238 | return 0; |
239 | ||
fb8c4b14 SF |
240 | /* check for plausible wct, bcc and t2 data and parm sizes */ |
241 | /* check for parm and data offset going beyond end of smb */ | |
242 | if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
467a8f8d | 243 | cFYI(1, ("invalid transact2 word count")); |
e4eb295d SF |
244 | return -EINVAL; |
245 | } | |
246 | ||
247 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
248 | ||
249 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
250 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
251 | ||
252 | remaining = total_data_size - data_in_this_rsp; | |
253 | ||
fb8c4b14 | 254 | if (remaining == 0) |
e4eb295d | 255 | return 0; |
fb8c4b14 | 256 | else if (remaining < 0) { |
467a8f8d | 257 | cFYI(1, ("total data %d smaller than data in frame %d", |
e4eb295d SF |
258 | total_data_size, data_in_this_rsp)); |
259 | return -EINVAL; | |
260 | } else { | |
467a8f8d | 261 | cFYI(1, ("missing %d bytes from transact2, check next response", |
e4eb295d | 262 | remaining)); |
fb8c4b14 SF |
263 | if (total_data_size > maxBufSize) { |
264 | cERROR(1, ("TotalDataSize %d is over maximum buffer %d", | |
265 | total_data_size, maxBufSize)); | |
266 | return -EINVAL; | |
e4eb295d SF |
267 | } |
268 | return remaining; | |
269 | } | |
270 | } | |
271 | ||
fb8c4b14 | 272 | static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) |
e4eb295d SF |
273 | { |
274 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
275 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
276 | int total_data_size; | |
277 | int total_in_buf; | |
278 | int remaining; | |
279 | int total_in_buf2; | |
fb8c4b14 SF |
280 | char *data_area_of_target; |
281 | char *data_area_of_buf2; | |
e4eb295d SF |
282 | __u16 byte_count; |
283 | ||
284 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
285 | ||
fb8c4b14 | 286 | if (total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { |
63135e08 | 287 | cFYI(1, ("total data size of primary and secondary t2 differ")); |
e4eb295d SF |
288 | } |
289 | ||
290 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
291 | ||
292 | remaining = total_data_size - total_in_buf; | |
50c2f753 | 293 | |
fb8c4b14 | 294 | if (remaining < 0) |
e4eb295d SF |
295 | return -EINVAL; |
296 | ||
fb8c4b14 | 297 | if (remaining == 0) /* nothing to do, ignore */ |
e4eb295d | 298 | return 0; |
50c2f753 | 299 | |
e4eb295d | 300 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); |
fb8c4b14 | 301 | if (remaining < total_in_buf2) { |
467a8f8d | 302 | cFYI(1, ("transact2 2nd response contains too much data")); |
e4eb295d SF |
303 | } |
304 | ||
305 | /* find end of first SMB data area */ | |
fb8c4b14 | 306 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + |
e4eb295d SF |
307 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); |
308 | /* validate target area */ | |
309 | ||
310 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
fb8c4b14 | 311 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); |
e4eb295d SF |
312 | |
313 | data_area_of_target += total_in_buf; | |
314 | ||
315 | /* copy second buffer into end of first buffer */ | |
fb8c4b14 | 316 | memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); |
e4eb295d SF |
317 | total_in_buf += total_in_buf2; |
318 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
319 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
320 | byte_count += total_in_buf2; | |
321 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
322 | ||
70ca734a | 323 | byte_count = pTargetSMB->smb_buf_length; |
e4eb295d SF |
324 | byte_count += total_in_buf2; |
325 | ||
326 | /* BB also add check that we are not beyond maximum buffer size */ | |
50c2f753 | 327 | |
70ca734a | 328 | pTargetSMB->smb_buf_length = byte_count; |
e4eb295d | 329 | |
fb8c4b14 | 330 | if (remaining == total_in_buf2) { |
467a8f8d | 331 | cFYI(1, ("found the last secondary response")); |
e4eb295d SF |
332 | return 0; /* we are done */ |
333 | } else /* more responses to go */ | |
334 | return 1; | |
335 | ||
336 | } | |
337 | ||
1da177e4 LT |
338 | static int |
339 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
340 | { | |
341 | int length; | |
342 | unsigned int pdu_length, total_read; | |
343 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
344 | struct smb_hdr *bigbuf = NULL; |
345 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
346 | struct msghdr smb_msg; |
347 | struct kvec iov; | |
348 | struct socket *csocket = server->ssocket; | |
349 | struct list_head *tmp; | |
350 | struct cifsSesInfo *ses; | |
351 | struct task_struct *task_to_wake = NULL; | |
352 | struct mid_q_entry *mid_entry; | |
70ca734a | 353 | char temp; |
4b18f2a9 SF |
354 | bool isLargeBuf = false; |
355 | bool isMultiRsp; | |
e4eb295d | 356 | int reconnect; |
1da177e4 | 357 | |
1da177e4 | 358 | current->flags |= PF_MEMALLOC; |
ba25f9dc | 359 | cFYI(1, ("Demultiplex PID: %d", task_pid_nr(current))); |
93d0ec85 JL |
360 | |
361 | length = atomic_inc_return(&tcpSesAllocCount); | |
362 | if (length > 1) | |
26f57364 SF |
363 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, |
364 | GFP_KERNEL); | |
1da177e4 | 365 | |
83144186 | 366 | set_freezable(); |
469ee614 | 367 | while (server->tcpStatus != CifsExiting) { |
ede1327e SF |
368 | if (try_to_freeze()) |
369 | continue; | |
b8643e1b SF |
370 | if (bigbuf == NULL) { |
371 | bigbuf = cifs_buf_get(); | |
0fd1ffe0 PM |
372 | if (!bigbuf) { |
373 | cERROR(1, ("No memory for large SMB response")); | |
b8643e1b SF |
374 | msleep(3000); |
375 | /* retry will check if exiting */ | |
376 | continue; | |
377 | } | |
0fd1ffe0 PM |
378 | } else if (isLargeBuf) { |
379 | /* we are reusing a dirty large buf, clear its start */ | |
26f57364 | 380 | memset(bigbuf, 0, sizeof(struct smb_hdr)); |
1da177e4 | 381 | } |
b8643e1b SF |
382 | |
383 | if (smallbuf == NULL) { | |
384 | smallbuf = cifs_small_buf_get(); | |
0fd1ffe0 PM |
385 | if (!smallbuf) { |
386 | cERROR(1, ("No memory for SMB response")); | |
b8643e1b SF |
387 | msleep(1000); |
388 | /* retry will check if exiting */ | |
389 | continue; | |
390 | } | |
391 | /* beginning of smb buffer is cleared in our buf_get */ | |
392 | } else /* if existing small buf clear beginning */ | |
26f57364 | 393 | memset(smallbuf, 0, sizeof(struct smb_hdr)); |
b8643e1b | 394 | |
4b18f2a9 SF |
395 | isLargeBuf = false; |
396 | isMultiRsp = false; | |
b8643e1b | 397 | smb_buffer = smallbuf; |
1da177e4 LT |
398 | iov.iov_base = smb_buffer; |
399 | iov.iov_len = 4; | |
400 | smb_msg.msg_control = NULL; | |
401 | smb_msg.msg_controllen = 0; | |
f01d5e14 SF |
402 | pdu_length = 4; /* enough to get RFC1001 header */ |
403 | incomplete_rcv: | |
1da177e4 LT |
404 | length = |
405 | kernel_recvmsg(csocket, &smb_msg, | |
f01d5e14 | 406 | &iov, 1, pdu_length, 0 /* BB other flags? */); |
1da177e4 | 407 | |
469ee614 | 408 | if (server->tcpStatus == CifsExiting) { |
1da177e4 LT |
409 | break; |
410 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
0fd1ffe0 | 411 | cFYI(1, ("Reconnect after server stopped responding")); |
1da177e4 | 412 | cifs_reconnect(server); |
0fd1ffe0 | 413 | cFYI(1, ("call to reconnect done")); |
1da177e4 LT |
414 | csocket = server->ssocket; |
415 | continue; | |
416 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 417 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
418 | allowing socket to clear and app threads to set |
419 | tcpStatus CifsNeedReconnect if server hung */ | |
c18c732e SF |
420 | if (pdu_length < 4) |
421 | goto incomplete_rcv; | |
422 | else | |
423 | continue; | |
1da177e4 | 424 | } else if (length <= 0) { |
0fd1ffe0 PM |
425 | if (server->tcpStatus == CifsNew) { |
426 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
427 | /* some servers kill the TCP session rather than |
428 | returning an SMB negprot error, in which | |
429 | case reconnecting here is not going to help, | |
430 | and so simply return error to mount */ | |
1da177e4 LT |
431 | break; |
432 | } | |
0fd1ffe0 | 433 | if (!try_to_freeze() && (length == -EINTR)) { |
467a8f8d | 434 | cFYI(1, ("cifsd thread killed")); |
1da177e4 LT |
435 | break; |
436 | } | |
467a8f8d | 437 | cFYI(1, ("Reconnect after unexpected peek error %d", |
57337e42 | 438 | length)); |
1da177e4 LT |
439 | cifs_reconnect(server); |
440 | csocket = server->ssocket; | |
441 | wake_up(&server->response_q); | |
442 | continue; | |
2a974680 PT |
443 | } else if (length < pdu_length) { |
444 | cFYI(1, ("requested %d bytes but only got %d bytes", | |
445 | pdu_length, length)); | |
f01d5e14 | 446 | pdu_length -= length; |
f01d5e14 SF |
447 | msleep(1); |
448 | goto incomplete_rcv; | |
46810cbf | 449 | } |
1da177e4 | 450 | |
70ca734a SF |
451 | /* The right amount was read from socket - 4 bytes */ |
452 | /* so we can now interpret the length field */ | |
46810cbf | 453 | |
70ca734a SF |
454 | /* the first byte big endian of the length field, |
455 | is actually not part of the length but the type | |
456 | with the most common, zero, as regular data */ | |
457 | temp = *((char *) smb_buffer); | |
46810cbf | 458 | |
fb8c4b14 | 459 | /* Note that FC 1001 length is big endian on the wire, |
70ca734a SF |
460 | but we convert it here so it is always manipulated |
461 | as host byte order */ | |
5ca33c6a | 462 | pdu_length = be32_to_cpu((__force __be32)smb_buffer->smb_buf_length); |
70ca734a SF |
463 | smb_buffer->smb_buf_length = pdu_length; |
464 | ||
467a8f8d | 465 | cFYI(1, ("rfc1002 length 0x%x", pdu_length+4)); |
46810cbf | 466 | |
70ca734a | 467 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
fb8c4b14 | 468 | continue; |
70ca734a | 469 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
467a8f8d | 470 | cFYI(1, ("Good RFC 1002 session rsp")); |
e4eb295d | 471 | continue; |
70ca734a | 472 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
fb8c4b14 | 473 | /* we get this from Windows 98 instead of |
46810cbf | 474 | an error on SMB negprot response */ |
fb8c4b14 | 475 | cFYI(1, ("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 476 | pdu_length)); |
fb8c4b14 SF |
477 | if (server->tcpStatus == CifsNew) { |
478 | /* if nack on negprot (rather than | |
46810cbf SF |
479 | ret of smb negprot error) reconnecting |
480 | not going to help, ret error to mount */ | |
481 | break; | |
482 | } else { | |
483 | /* give server a second to | |
484 | clean up before reconnect attempt */ | |
485 | msleep(1000); | |
486 | /* always try 445 first on reconnect | |
487 | since we get NACK on some if we ever | |
fb8c4b14 | 488 | connected to port 139 (the NACK is |
46810cbf SF |
489 | since we do not begin with RFC1001 |
490 | session initialize frame) */ | |
fb8c4b14 | 491 | server->addr.sockAddr.sin_port = |
46810cbf | 492 | htons(CIFS_PORT); |
1da177e4 LT |
493 | cifs_reconnect(server); |
494 | csocket = server->ssocket; | |
46810cbf | 495 | wake_up(&server->response_q); |
1da177e4 | 496 | continue; |
46810cbf | 497 | } |
70ca734a | 498 | } else if (temp != (char) 0) { |
fb8c4b14 | 499 | cERROR(1, ("Unknown RFC 1002 frame")); |
70ca734a SF |
500 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
501 | length); | |
46810cbf SF |
502 | cifs_reconnect(server); |
503 | csocket = server->ssocket; | |
504 | continue; | |
e4eb295d SF |
505 | } |
506 | ||
507 | /* else we have an SMB response */ | |
fb8c4b14 | 508 | if ((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || |
26f57364 | 509 | (pdu_length < sizeof(struct smb_hdr) - 1 - 4)) { |
e4eb295d | 510 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 511 | length, pdu_length+4)); |
e4eb295d SF |
512 | cifs_reconnect(server); |
513 | csocket = server->ssocket; | |
514 | wake_up(&server->response_q); | |
515 | continue; | |
fb8c4b14 | 516 | } |
e4eb295d SF |
517 | |
518 | /* else length ok */ | |
519 | reconnect = 0; | |
520 | ||
fb8c4b14 | 521 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
4b18f2a9 | 522 | isLargeBuf = true; |
e4eb295d SF |
523 | memcpy(bigbuf, smallbuf, 4); |
524 | smb_buffer = bigbuf; | |
525 | } | |
526 | length = 0; | |
527 | iov.iov_base = 4 + (char *)smb_buffer; | |
528 | iov.iov_len = pdu_length; | |
fb8c4b14 | 529 | for (total_read = 0; total_read < pdu_length; |
e4eb295d SF |
530 | total_read += length) { |
531 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
532 | pdu_length - total_read, 0); | |
469ee614 | 533 | if ((server->tcpStatus == CifsExiting) || |
e4eb295d SF |
534 | (length == -EINTR)) { |
535 | /* then will exit */ | |
536 | reconnect = 2; | |
537 | break; | |
538 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
539 | cifs_reconnect(server); |
540 | csocket = server->ssocket; | |
fb8c4b14 | 541 | /* Reconnect wakes up rspns q */ |
e4eb295d SF |
542 | /* Now we will reread sock */ |
543 | reconnect = 1; | |
544 | break; | |
fb8c4b14 | 545 | } else if ((length == -ERESTARTSYS) || |
e4eb295d SF |
546 | (length == -EAGAIN)) { |
547 | msleep(1); /* minimum sleep to prevent looping, | |
fb8c4b14 | 548 | allowing socket to clear and app |
e4eb295d SF |
549 | threads to set tcpStatus |
550 | CifsNeedReconnect if server hung*/ | |
c18c732e | 551 | length = 0; |
46810cbf | 552 | continue; |
e4eb295d | 553 | } else if (length <= 0) { |
fb8c4b14 | 554 | cERROR(1, ("Received no data, expecting %d", |
e4eb295d SF |
555 | pdu_length - total_read)); |
556 | cifs_reconnect(server); | |
557 | csocket = server->ssocket; | |
558 | reconnect = 1; | |
559 | break; | |
46810cbf | 560 | } |
e4eb295d | 561 | } |
fb8c4b14 | 562 | if (reconnect == 2) |
e4eb295d | 563 | break; |
fb8c4b14 | 564 | else if (reconnect == 1) |
e4eb295d | 565 | continue; |
1da177e4 | 566 | |
e4eb295d | 567 | length += 4; /* account for rfc1002 hdr */ |
50c2f753 | 568 | |
09d1db5c | 569 | |
e4eb295d | 570 | dump_smb(smb_buffer, length); |
184ed211 | 571 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 572 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
573 | continue; |
574 | } | |
1da177e4 | 575 | |
e4eb295d SF |
576 | |
577 | task_to_wake = NULL; | |
578 | spin_lock(&GlobalMid_Lock); | |
579 | list_for_each(tmp, &server->pending_mid_q) { | |
580 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
581 | ||
50c2f753 | 582 | if ((mid_entry->mid == smb_buffer->Mid) && |
e4eb295d SF |
583 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && |
584 | (mid_entry->command == smb_buffer->Command)) { | |
fb8c4b14 | 585 | if (check2ndT2(smb_buffer,server->maxBuf) > 0) { |
e4eb295d | 586 | /* We have a multipart transact2 resp */ |
4b18f2a9 | 587 | isMultiRsp = true; |
fb8c4b14 | 588 | if (mid_entry->resp_buf) { |
e4eb295d | 589 | /* merge response - fix up 1st*/ |
50c2f753 | 590 | if (coalesce_t2(smb_buffer, |
e4eb295d | 591 | mid_entry->resp_buf)) { |
4b18f2a9 SF |
592 | mid_entry->multiRsp = |
593 | true; | |
e4eb295d SF |
594 | break; |
595 | } else { | |
596 | /* all parts received */ | |
4b18f2a9 SF |
597 | mid_entry->multiEnd = |
598 | true; | |
50c2f753 | 599 | goto multi_t2_fnd; |
e4eb295d SF |
600 | } |
601 | } else { | |
fb8c4b14 | 602 | if (!isLargeBuf) { |
e4eb295d SF |
603 | cERROR(1,("1st trans2 resp needs bigbuf")); |
604 | /* BB maybe we can fix this up, switch | |
50c2f753 | 605 | to already allocated large buffer? */ |
e4eb295d | 606 | } else { |
cd63499c | 607 | /* Have first buffer */ |
e4eb295d SF |
608 | mid_entry->resp_buf = |
609 | smb_buffer; | |
4b18f2a9 SF |
610 | mid_entry->largeBuf = |
611 | true; | |
e4eb295d SF |
612 | bigbuf = NULL; |
613 | } | |
614 | } | |
615 | break; | |
50c2f753 | 616 | } |
e4eb295d | 617 | mid_entry->resp_buf = smb_buffer; |
4b18f2a9 | 618 | mid_entry->largeBuf = isLargeBuf; |
e4eb295d SF |
619 | multi_t2_fnd: |
620 | task_to_wake = mid_entry->tsk; | |
621 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
622 | #ifdef CONFIG_CIFS_STATS2 |
623 | mid_entry->when_received = jiffies; | |
624 | #endif | |
3a5ff61c SF |
625 | /* so we do not time out requests to server |
626 | which is still responding (since server could | |
627 | be busy but not dead) */ | |
628 | server->lstrp = jiffies; | |
e4eb295d | 629 | break; |
46810cbf | 630 | } |
1da177e4 | 631 | } |
e4eb295d SF |
632 | spin_unlock(&GlobalMid_Lock); |
633 | if (task_to_wake) { | |
cd63499c | 634 | /* Was previous buf put in mpx struct for multi-rsp? */ |
fb8c4b14 | 635 | if (!isMultiRsp) { |
cd63499c | 636 | /* smb buffer will be freed by user thread */ |
26f57364 | 637 | if (isLargeBuf) |
cd63499c | 638 | bigbuf = NULL; |
26f57364 | 639 | else |
cd63499c SF |
640 | smallbuf = NULL; |
641 | } | |
e4eb295d | 642 | wake_up_process(task_to_wake); |
4b18f2a9 SF |
643 | } else if (!is_valid_oplock_break(smb_buffer, server) && |
644 | !isMultiRsp) { | |
50c2f753 SF |
645 | cERROR(1, ("No task to wake, unknown frame received! " |
646 | "NumMids %d", midCount.counter)); | |
647 | cifs_dump_mem("Received Data is: ", (char *)smb_buffer, | |
70ca734a | 648 | sizeof(struct smb_hdr)); |
3979877e SF |
649 | #ifdef CONFIG_CIFS_DEBUG2 |
650 | cifs_dump_detail(smb_buffer); | |
651 | cifs_dump_mids(server); | |
652 | #endif /* CIFS_DEBUG2 */ | |
50c2f753 | 653 | |
e4eb295d SF |
654 | } |
655 | } /* end while !EXITING */ | |
656 | ||
1da177e4 LT |
657 | spin_lock(&GlobalMid_Lock); |
658 | server->tcpStatus = CifsExiting; | |
e691b9d1 | 659 | spin_unlock(&GlobalMid_Lock); |
dbdbb876 | 660 | wake_up_all(&server->response_q); |
e691b9d1 | 661 | |
31ca3bc3 SF |
662 | /* check if we have blocked requests that need to free */ |
663 | /* Note that cifs_max_pending is normally 50, but | |
664 | can be set at module install time to as little as two */ | |
e691b9d1 | 665 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 | 666 | if (atomic_read(&server->inFlight) >= cifs_max_pending) |
31ca3bc3 SF |
667 | atomic_set(&server->inFlight, cifs_max_pending - 1); |
668 | /* We do not want to set the max_pending too low or we | |
669 | could end up with the counter going negative */ | |
1da177e4 | 670 | spin_unlock(&GlobalMid_Lock); |
50c2f753 | 671 | /* Although there should not be any requests blocked on |
1da177e4 | 672 | this queue it can not hurt to be paranoid and try to wake up requests |
09d1db5c | 673 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
674 | to the same server - they now will see the session is in exit state |
675 | and get out of SendReceive. */ | |
676 | wake_up_all(&server->request_q); | |
677 | /* give those requests time to exit */ | |
b8643e1b | 678 | msleep(125); |
50c2f753 | 679 | |
fb8c4b14 | 680 | if (server->ssocket) { |
1da177e4 LT |
681 | sock_release(csocket); |
682 | server->ssocket = NULL; | |
683 | } | |
b8643e1b | 684 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
a8a11d39 MK |
685 | cifs_buf_release(bigbuf); |
686 | if (smallbuf) /* no sense logging a debug message if NULL */ | |
b8643e1b | 687 | cifs_small_buf_release(smallbuf); |
1da177e4 LT |
688 | |
689 | read_lock(&GlobalSMBSeslock); | |
690 | if (list_empty(&server->pending_mid_q)) { | |
09d1db5c SF |
691 | /* loop through server session structures attached to this and |
692 | mark them dead */ | |
1da177e4 LT |
693 | list_for_each(tmp, &GlobalSMBSessionList) { |
694 | ses = | |
695 | list_entry(tmp, struct cifsSesInfo, | |
696 | cifsSessionList); | |
697 | if (ses->server == server) { | |
698 | ses->status = CifsExiting; | |
699 | ses->server = NULL; | |
700 | } | |
701 | } | |
702 | read_unlock(&GlobalSMBSeslock); | |
703 | } else { | |
31ca3bc3 SF |
704 | /* although we can not zero the server struct pointer yet, |
705 | since there are active requests which may depnd on them, | |
706 | mark the corresponding SMB sessions as exiting too */ | |
707 | list_for_each(tmp, &GlobalSMBSessionList) { | |
708 | ses = list_entry(tmp, struct cifsSesInfo, | |
709 | cifsSessionList); | |
26f57364 | 710 | if (ses->server == server) |
31ca3bc3 | 711 | ses->status = CifsExiting; |
31ca3bc3 SF |
712 | } |
713 | ||
1da177e4 LT |
714 | spin_lock(&GlobalMid_Lock); |
715 | list_for_each(tmp, &server->pending_mid_q) { | |
716 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
717 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
50c2f753 SF |
718 | cFYI(1, ("Clearing Mid 0x%x - waking up ", |
719 | mid_entry->mid)); | |
1da177e4 | 720 | task_to_wake = mid_entry->tsk; |
26f57364 | 721 | if (task_to_wake) |
1da177e4 | 722 | wake_up_process(task_to_wake); |
1da177e4 LT |
723 | } |
724 | } | |
725 | spin_unlock(&GlobalMid_Lock); | |
726 | read_unlock(&GlobalSMBSeslock); | |
1da177e4 | 727 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 728 | msleep(125); |
1da177e4 LT |
729 | } |
730 | ||
f191401f | 731 | if (!list_empty(&server->pending_mid_q)) { |
50c2f753 | 732 | /* mpx threads have not exited yet give them |
1da177e4 | 733 | at least the smb send timeout time for long ops */ |
31ca3bc3 SF |
734 | /* due to delays on oplock break requests, we need |
735 | to wait at least 45 seconds before giving up | |
736 | on a request getting a response and going ahead | |
737 | and killing cifsd */ | |
1da177e4 | 738 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 739 | msleep(46000); |
1da177e4 LT |
740 | /* if threads still have not exited they are probably never |
741 | coming home not much else we can do but free the memory */ | |
742 | } | |
1da177e4 | 743 | |
31ca3bc3 SF |
744 | /* last chance to mark ses pointers invalid |
745 | if there are any pointing to this (e.g | |
50c2f753 | 746 | if a crazy root user tried to kill cifsd |
31ca3bc3 | 747 | kernel thread explicitly this might happen) */ |
93d0ec85 | 748 | write_lock(&GlobalSMBSeslock); |
31ca3bc3 SF |
749 | list_for_each(tmp, &GlobalSMBSessionList) { |
750 | ses = list_entry(tmp, struct cifsSesInfo, | |
751 | cifsSessionList); | |
26f57364 | 752 | if (ses->server == server) |
31ca3bc3 | 753 | ses->server = NULL; |
31ca3bc3 | 754 | } |
1da177e4 | 755 | write_unlock(&GlobalSMBSeslock); |
31ca3bc3 | 756 | |
c359cf3c | 757 | kfree(server->hostname); |
b1c8d2b4 | 758 | task_to_wake = xchg(&server->tsk, NULL); |
31ca3bc3 | 759 | kfree(server); |
93d0ec85 JL |
760 | |
761 | length = atomic_dec_return(&tcpSesAllocCount); | |
26f57364 SF |
762 | if (length > 0) |
763 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, | |
764 | GFP_KERNEL); | |
50c2f753 | 765 | |
b1c8d2b4 JL |
766 | /* if server->tsk was NULL then wait for a signal before exiting */ |
767 | if (!task_to_wake) { | |
768 | set_current_state(TASK_INTERRUPTIBLE); | |
769 | while (!signal_pending(current)) { | |
770 | schedule(); | |
771 | set_current_state(TASK_INTERRUPTIBLE); | |
772 | } | |
773 | set_current_state(TASK_RUNNING); | |
774 | } | |
775 | ||
1da177e4 LT |
776 | return 0; |
777 | } | |
778 | ||
c359cf3c JL |
779 | /* extract the host portion of the UNC string */ |
780 | static char * | |
781 | extract_hostname(const char *unc) | |
782 | { | |
783 | const char *src; | |
784 | char *dst, *delim; | |
785 | unsigned int len; | |
786 | ||
787 | /* skip double chars at beginning of string */ | |
788 | /* BB: check validity of these bytes? */ | |
789 | src = unc + 2; | |
790 | ||
791 | /* delimiter between hostname and sharename is always '\\' now */ | |
792 | delim = strchr(src, '\\'); | |
793 | if (!delim) | |
794 | return ERR_PTR(-EINVAL); | |
795 | ||
796 | len = delim - src; | |
797 | dst = kmalloc((len + 1), GFP_KERNEL); | |
798 | if (dst == NULL) | |
799 | return ERR_PTR(-ENOMEM); | |
800 | ||
801 | memcpy(dst, src, len); | |
802 | dst[len] = '\0'; | |
803 | ||
804 | return dst; | |
805 | } | |
806 | ||
1da177e4 | 807 | static int |
50c2f753 SF |
808 | cifs_parse_mount_options(char *options, const char *devname, |
809 | struct smb_vol *vol) | |
1da177e4 LT |
810 | { |
811 | char *value; | |
812 | char *data; | |
813 | unsigned int temp_len, i, j; | |
814 | char separator[2]; | |
815 | ||
816 | separator[0] = ','; | |
50c2f753 | 817 | separator[1] = 0; |
1da177e4 | 818 | |
12e36b2f | 819 | if (Local_System_Name[0] != 0) |
50c2f753 | 820 | memcpy(vol->source_rfc1001_name, Local_System_Name, 15); |
2cd646a2 | 821 | else { |
12e36b2f | 822 | char *nodename = utsname()->nodename; |
50c2f753 SF |
823 | int n = strnlen(nodename, 15); |
824 | memset(vol->source_rfc1001_name, 0x20, 15); | |
825 | for (i = 0; i < n; i++) { | |
2cd646a2 SF |
826 | /* does not have to be perfect mapping since field is |
827 | informational, only used for servers that do not support | |
828 | port 445 and it can be overridden at mount time */ | |
12e36b2f | 829 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
2cd646a2 | 830 | } |
1da177e4 LT |
831 | } |
832 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
833 | /* null target name indicates to use *SMBSERVR default called name |
834 | if we end up sending RFC1001 session initialize */ | |
835 | vol->target_rfc1001_name[0] = 0; | |
1da177e4 LT |
836 | vol->linux_uid = current->uid; /* current->euid instead? */ |
837 | vol->linux_gid = current->gid; | |
838 | vol->dir_mode = S_IRWXUGO; | |
839 | /* 2767 perms indicate mandatory locking support */ | |
7505e052 | 840 | vol->file_mode = (S_IRWXUGO | S_ISGID) & (~S_IXGRP); |
1da177e4 LT |
841 | |
842 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
4b18f2a9 | 843 | vol->rw = true; |
ac67055e JA |
844 | /* default is always to request posix paths. */ |
845 | vol->posix_paths = 1; | |
846 | ||
1da177e4 LT |
847 | if (!options) |
848 | return 1; | |
849 | ||
50c2f753 | 850 | if (strncmp(options, "sep=", 4) == 0) { |
fb8c4b14 | 851 | if (options[4] != 0) { |
1da177e4 LT |
852 | separator[0] = options[4]; |
853 | options += 5; | |
854 | } else { | |
467a8f8d | 855 | cFYI(1, ("Null separator not allowed")); |
1da177e4 LT |
856 | } |
857 | } | |
50c2f753 | 858 | |
1da177e4 LT |
859 | while ((data = strsep(&options, separator)) != NULL) { |
860 | if (!*data) | |
861 | continue; | |
862 | if ((value = strchr(data, '=')) != NULL) | |
863 | *value++ = '\0'; | |
864 | ||
50c2f753 SF |
865 | /* Have to parse this before we parse for "user" */ |
866 | if (strnicmp(data, "user_xattr", 10) == 0) { | |
1da177e4 | 867 | vol->no_xattr = 0; |
50c2f753 | 868 | } else if (strnicmp(data, "nouser_xattr", 12) == 0) { |
1da177e4 LT |
869 | vol->no_xattr = 1; |
870 | } else if (strnicmp(data, "user", 4) == 0) { | |
4b952a9b | 871 | if (!value) { |
1da177e4 LT |
872 | printk(KERN_WARNING |
873 | "CIFS: invalid or missing username\n"); | |
874 | return 1; /* needs_arg; */ | |
fb8c4b14 | 875 | } else if (!*value) { |
4b952a9b SF |
876 | /* null user, ie anonymous, authentication */ |
877 | vol->nullauth = 1; | |
1da177e4 LT |
878 | } |
879 | if (strnlen(value, 200) < 200) { | |
880 | vol->username = value; | |
881 | } else { | |
882 | printk(KERN_WARNING "CIFS: username too long\n"); | |
883 | return 1; | |
884 | } | |
885 | } else if (strnicmp(data, "pass", 4) == 0) { | |
886 | if (!value) { | |
887 | vol->password = NULL; | |
888 | continue; | |
fb8c4b14 | 889 | } else if (value[0] == 0) { |
1da177e4 LT |
890 | /* check if string begins with double comma |
891 | since that would mean the password really | |
892 | does start with a comma, and would not | |
893 | indicate an empty string */ | |
fb8c4b14 | 894 | if (value[1] != separator[0]) { |
1da177e4 LT |
895 | vol->password = NULL; |
896 | continue; | |
897 | } | |
898 | } | |
899 | temp_len = strlen(value); | |
900 | /* removed password length check, NTLM passwords | |
901 | can be arbitrarily long */ | |
902 | ||
50c2f753 | 903 | /* if comma in password, the string will be |
1da177e4 LT |
904 | prematurely null terminated. Commas in password are |
905 | specified across the cifs mount interface by a double | |
906 | comma ie ,, and a comma used as in other cases ie ',' | |
907 | as a parameter delimiter/separator is single and due | |
908 | to the strsep above is temporarily zeroed. */ | |
909 | ||
910 | /* NB: password legally can have multiple commas and | |
911 | the only illegal character in a password is null */ | |
912 | ||
50c2f753 | 913 | if ((value[temp_len] == 0) && |
09d1db5c | 914 | (value[temp_len+1] == separator[0])) { |
1da177e4 LT |
915 | /* reinsert comma */ |
916 | value[temp_len] = separator[0]; | |
50c2f753 SF |
917 | temp_len += 2; /* move after second comma */ |
918 | while (value[temp_len] != 0) { | |
1da177e4 | 919 | if (value[temp_len] == separator[0]) { |
50c2f753 | 920 | if (value[temp_len+1] == |
09d1db5c SF |
921 | separator[0]) { |
922 | /* skip second comma */ | |
923 | temp_len++; | |
50c2f753 | 924 | } else { |
1da177e4 LT |
925 | /* single comma indicating start |
926 | of next parm */ | |
927 | break; | |
928 | } | |
929 | } | |
930 | temp_len++; | |
931 | } | |
fb8c4b14 | 932 | if (value[temp_len] == 0) { |
1da177e4 LT |
933 | options = NULL; |
934 | } else { | |
935 | value[temp_len] = 0; | |
936 | /* point option to start of next parm */ | |
937 | options = value + temp_len + 1; | |
938 | } | |
50c2f753 | 939 | /* go from value to value + temp_len condensing |
1da177e4 LT |
940 | double commas to singles. Note that this ends up |
941 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 942 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
fb8c4b14 | 943 | if (vol->password == NULL) { |
50c2f753 SF |
944 | printk(KERN_WARNING "CIFS: no memory " |
945 | "for password\n"); | |
433dc24f SF |
946 | return 1; |
947 | } | |
50c2f753 | 948 | for (i = 0, j = 0; i < temp_len; i++, j++) { |
1da177e4 | 949 | vol->password[j] = value[i]; |
fb8c4b14 | 950 | if (value[i] == separator[0] |
09d1db5c | 951 | && value[i+1] == separator[0]) { |
1da177e4 LT |
952 | /* skip second comma */ |
953 | i++; | |
954 | } | |
955 | } | |
956 | vol->password[j] = 0; | |
957 | } else { | |
e915fc49 | 958 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
fb8c4b14 | 959 | if (vol->password == NULL) { |
50c2f753 SF |
960 | printk(KERN_WARNING "CIFS: no memory " |
961 | "for password\n"); | |
433dc24f SF |
962 | return 1; |
963 | } | |
1da177e4 LT |
964 | strcpy(vol->password, value); |
965 | } | |
966 | } else if (strnicmp(data, "ip", 2) == 0) { | |
967 | if (!value || !*value) { | |
968 | vol->UNCip = NULL; | |
969 | } else if (strnlen(value, 35) < 35) { | |
970 | vol->UNCip = value; | |
971 | } else { | |
50c2f753 SF |
972 | printk(KERN_WARNING "CIFS: ip address " |
973 | "too long\n"); | |
1da177e4 LT |
974 | return 1; |
975 | } | |
50c2f753 SF |
976 | } else if (strnicmp(data, "sec", 3) == 0) { |
977 | if (!value || !*value) { | |
978 | cERROR(1, ("no security value specified")); | |
979 | continue; | |
980 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
981 | vol->secFlg |= CIFSSEC_MAY_KRB5 | | |
189acaae | 982 | CIFSSEC_MUST_SIGN; |
bf820679 | 983 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
50c2f753 SF |
984 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
985 | CIFSSEC_MAY_KRB5; */ | |
986 | cERROR(1, ("Krb5 cifs privacy not supported")); | |
bf820679 SF |
987 | return 1; |
988 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 989 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
bf820679 | 990 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 991 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 992 | CIFSSEC_MUST_SIGN; |
bf820679 | 993 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 994 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 995 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 996 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 997 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
998 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
999 | /* ntlm is default so can be turned off too */ | |
750d1151 | 1000 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 1001 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 1002 | /* BB is there a better way to do this? */ |
750d1151 | 1003 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
1004 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
1005 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
50c2f753 | 1006 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 1007 | #endif |
bf820679 | 1008 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 1009 | vol->nullauth = 1; |
50c2f753 SF |
1010 | } else { |
1011 | cERROR(1, ("bad security option: %s", value)); | |
1012 | return 1; | |
1013 | } | |
1da177e4 LT |
1014 | } else if ((strnicmp(data, "unc", 3) == 0) |
1015 | || (strnicmp(data, "target", 6) == 0) | |
1016 | || (strnicmp(data, "path", 4) == 0)) { | |
1017 | if (!value || !*value) { | |
50c2f753 SF |
1018 | printk(KERN_WARNING "CIFS: invalid path to " |
1019 | "network resource\n"); | |
1da177e4 LT |
1020 | return 1; /* needs_arg; */ |
1021 | } | |
1022 | if ((temp_len = strnlen(value, 300)) < 300) { | |
50c2f753 | 1023 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1024 | if (vol->UNC == NULL) |
1da177e4 | 1025 | return 1; |
50c2f753 | 1026 | strcpy(vol->UNC, value); |
1da177e4 LT |
1027 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1028 | vol->UNC[0] = '\\'; | |
1029 | vol->UNC[1] = '\\'; | |
50c2f753 | 1030 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
1da177e4 | 1031 | printk(KERN_WARNING |
50c2f753 SF |
1032 | "CIFS: UNC Path does not begin " |
1033 | "with // or \\\\ \n"); | |
1da177e4 LT |
1034 | return 1; |
1035 | } | |
1036 | } else { | |
1037 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1038 | return 1; | |
1039 | } | |
1040 | } else if ((strnicmp(data, "domain", 3) == 0) | |
1041 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
1042 | if (!value || !*value) { | |
1043 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
1044 | return 1; /* needs_arg; */ | |
1045 | } | |
1046 | /* BB are there cases in which a comma can be valid in | |
1047 | a domain name and need special handling? */ | |
3979877e | 1048 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
1049 | vol->domainname = value; |
1050 | cFYI(1, ("Domain name set")); | |
1051 | } else { | |
50c2f753 SF |
1052 | printk(KERN_WARNING "CIFS: domain name too " |
1053 | "long\n"); | |
1da177e4 LT |
1054 | return 1; |
1055 | } | |
50c2f753 SF |
1056 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
1057 | if (!value || !*value) { | |
1058 | printk(KERN_WARNING | |
1059 | "CIFS: invalid path prefix\n"); | |
1060 | return 1; /* needs_argument */ | |
1061 | } | |
1062 | if ((temp_len = strnlen(value, 1024)) < 1024) { | |
4523cc30 | 1063 | if (value[0] != '/') |
2fe87f02 | 1064 | temp_len++; /* missing leading slash */ |
50c2f753 SF |
1065 | vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); |
1066 | if (vol->prepath == NULL) | |
1067 | return 1; | |
4523cc30 | 1068 | if (value[0] != '/') { |
2fe87f02 | 1069 | vol->prepath[0] = '/'; |
50c2f753 | 1070 | strcpy(vol->prepath+1, value); |
2fe87f02 | 1071 | } else |
50c2f753 SF |
1072 | strcpy(vol->prepath, value); |
1073 | cFYI(1, ("prefix path %s", vol->prepath)); | |
1074 | } else { | |
1075 | printk(KERN_WARNING "CIFS: prefix too long\n"); | |
1076 | return 1; | |
1077 | } | |
1da177e4 LT |
1078 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
1079 | if (!value || !*value) { | |
63135e08 SF |
1080 | printk(KERN_WARNING "CIFS: invalid iocharset " |
1081 | "specified\n"); | |
1da177e4 LT |
1082 | return 1; /* needs_arg; */ |
1083 | } | |
1084 | if (strnlen(value, 65) < 65) { | |
50c2f753 | 1085 | if (strnicmp(value, "default", 7)) |
1da177e4 | 1086 | vol->iocharset = value; |
50c2f753 SF |
1087 | /* if iocharset not set then load_nls_default |
1088 | is used by caller */ | |
1089 | cFYI(1, ("iocharset set to %s", value)); | |
1da177e4 | 1090 | } else { |
63135e08 SF |
1091 | printk(KERN_WARNING "CIFS: iocharset name " |
1092 | "too long.\n"); | |
1da177e4 LT |
1093 | return 1; |
1094 | } | |
1095 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1096 | if (value && *value) { | |
1097 | vol->linux_uid = | |
1098 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1099 | vol->override_uid = 1; |
1da177e4 LT |
1100 | } |
1101 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1102 | if (value && *value) { | |
1103 | vol->linux_gid = | |
1104 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1105 | vol->override_gid = 1; |
1da177e4 LT |
1106 | } |
1107 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1108 | if (value && *value) { | |
1109 | vol->file_mode = | |
1110 | simple_strtoul(value, &value, 0); | |
1111 | } | |
1112 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1113 | if (value && *value) { | |
1114 | vol->dir_mode = | |
1115 | simple_strtoul(value, &value, 0); | |
1116 | } | |
1117 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1118 | if (value && *value) { | |
1119 | vol->dir_mode = | |
1120 | simple_strtoul(value, &value, 0); | |
1121 | } | |
1122 | } else if (strnicmp(data, "port", 4) == 0) { | |
1123 | if (value && *value) { | |
1124 | vol->port = | |
1125 | simple_strtoul(value, &value, 0); | |
1126 | } | |
1127 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1128 | if (value && *value) { | |
1129 | vol->rsize = | |
1130 | simple_strtoul(value, &value, 0); | |
1131 | } | |
1132 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1133 | if (value && *value) { | |
1134 | vol->wsize = | |
1135 | simple_strtoul(value, &value, 0); | |
1136 | } | |
1137 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1138 | if (value && *value) { | |
1139 | vol->sockopt = | |
1140 | simple_strtoul(value, &value, 0); | |
1141 | } | |
1142 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1143 | if (!value || !*value || (*value == ' ')) { | |
63135e08 | 1144 | cFYI(1, ("invalid (empty) netbiosname")); |
1da177e4 | 1145 | } else { |
50c2f753 SF |
1146 | memset(vol->source_rfc1001_name, 0x20, 15); |
1147 | for (i = 0; i < 15; i++) { | |
1148 | /* BB are there cases in which a comma can be | |
1da177e4 LT |
1149 | valid in this workstation netbios name (and need |
1150 | special handling)? */ | |
1151 | ||
1152 | /* We do not uppercase netbiosname for user */ | |
50c2f753 | 1153 | if (value[i] == 0) |
1da177e4 | 1154 | break; |
50c2f753 SF |
1155 | else |
1156 | vol->source_rfc1001_name[i] = | |
1157 | value[i]; | |
1da177e4 LT |
1158 | } |
1159 | /* The string has 16th byte zero still from | |
1160 | set at top of the function */ | |
50c2f753 SF |
1161 | if ((i == 15) && (value[i] != 0)) |
1162 | printk(KERN_WARNING "CIFS: netbiosname" | |
1163 | " longer than 15 truncated.\n"); | |
a10faeb2 SF |
1164 | } |
1165 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1166 | /* servernetbiosname specified override *SMBSERVER */ | |
1167 | if (!value || !*value || (*value == ' ')) { | |
467a8f8d | 1168 | cFYI(1, ("empty server netbiosname specified")); |
a10faeb2 SF |
1169 | } else { |
1170 | /* last byte, type, is 0x20 for servr type */ | |
50c2f753 | 1171 | memset(vol->target_rfc1001_name, 0x20, 16); |
a10faeb2 | 1172 | |
50c2f753 | 1173 | for (i = 0; i < 15; i++) { |
a10faeb2 | 1174 | /* BB are there cases in which a comma can be |
50c2f753 SF |
1175 | valid in this workstation netbios name |
1176 | (and need special handling)? */ | |
a10faeb2 | 1177 | |
50c2f753 SF |
1178 | /* user or mount helper must uppercase |
1179 | the netbiosname */ | |
1180 | if (value[i] == 0) | |
a10faeb2 SF |
1181 | break; |
1182 | else | |
50c2f753 SF |
1183 | vol->target_rfc1001_name[i] = |
1184 | value[i]; | |
a10faeb2 SF |
1185 | } |
1186 | /* The string has 16th byte zero still from | |
1187 | set at top of the function */ | |
50c2f753 SF |
1188 | if ((i == 15) && (value[i] != 0)) |
1189 | printk(KERN_WARNING "CIFS: server net" | |
1190 | "biosname longer than 15 truncated.\n"); | |
1da177e4 LT |
1191 | } |
1192 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1193 | /* ignore */ | |
1194 | } else if (strnicmp(data, "version", 3) == 0) { | |
1195 | /* ignore */ | |
50c2f753 | 1196 | } else if (strnicmp(data, "guest", 5) == 0) { |
1da177e4 LT |
1197 | /* ignore */ |
1198 | } else if (strnicmp(data, "rw", 2) == 0) { | |
4b18f2a9 | 1199 | vol->rw = true; |
edf1ae40 SF |
1200 | } else if (strnicmp(data, "noblocksend", 11) == 0) { |
1201 | vol->noblocksnd = 1; | |
1202 | } else if (strnicmp(data, "noautotune", 10) == 0) { | |
1203 | vol->noautotune = 1; | |
1da177e4 LT |
1204 | } else if ((strnicmp(data, "suid", 4) == 0) || |
1205 | (strnicmp(data, "nosuid", 6) == 0) || | |
1206 | (strnicmp(data, "exec", 4) == 0) || | |
1207 | (strnicmp(data, "noexec", 6) == 0) || | |
1208 | (strnicmp(data, "nodev", 5) == 0) || | |
1209 | (strnicmp(data, "noauto", 6) == 0) || | |
1210 | (strnicmp(data, "dev", 3) == 0)) { | |
1211 | /* The mount tool or mount.cifs helper (if present) | |
50c2f753 SF |
1212 | uses these opts to set flags, and the flags are read |
1213 | by the kernel vfs layer before we get here (ie | |
1214 | before read super) so there is no point trying to | |
1215 | parse these options again and set anything and it | |
1216 | is ok to just ignore them */ | |
1da177e4 LT |
1217 | continue; |
1218 | } else if (strnicmp(data, "ro", 2) == 0) { | |
4b18f2a9 | 1219 | vol->rw = false; |
1da177e4 LT |
1220 | } else if (strnicmp(data, "hard", 4) == 0) { |
1221 | vol->retry = 1; | |
1222 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1223 | vol->retry = 0; | |
1224 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1225 | vol->noperm = 0; | |
1226 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1227 | vol->noperm = 1; | |
6a0b4824 SF |
1228 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1229 | vol->remap = 1; | |
1230 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1231 | vol->remap = 0; | |
50c2f753 SF |
1232 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1233 | vol->sfu_emul = 1; | |
1234 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1235 | vol->sfu_emul = 0; | |
2c1b8615 SF |
1236 | } else if (strnicmp(data, "nodfs", 5) == 0) { |
1237 | vol->nodfs = 1; | |
ac67055e JA |
1238 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1239 | vol->posix_paths = 1; | |
1240 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1241 | vol->posix_paths = 0; | |
c18c842b SF |
1242 | } else if (strnicmp(data, "nounix", 6) == 0) { |
1243 | vol->no_linux_ext = 1; | |
1244 | } else if (strnicmp(data, "nolinux", 7) == 0) { | |
1245 | vol->no_linux_ext = 1; | |
50c2f753 | 1246 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
a10faeb2 | 1247 | (strnicmp(data, "ignorecase", 10) == 0)) { |
50c2f753 | 1248 | vol->nocase = 1; |
c46fa8ac SF |
1249 | } else if (strnicmp(data, "brl", 3) == 0) { |
1250 | vol->nobrl = 0; | |
50c2f753 | 1251 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1252 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1253 | vol->nobrl = 1; |
d3485d37 SF |
1254 | /* turn off mandatory locking in mode |
1255 | if remote locking is turned off since the | |
1256 | local vfs will do advisory */ | |
50c2f753 SF |
1257 | if (vol->file_mode == |
1258 | (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
d3485d37 | 1259 | vol->file_mode = S_IALLUGO; |
1da177e4 LT |
1260 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1261 | vol->setuids = 1; | |
1262 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1263 | vol->setuids = 0; | |
d0a9c078 JL |
1264 | } else if (strnicmp(data, "dynperm", 7) == 0) { |
1265 | vol->dynperm = true; | |
1266 | } else if (strnicmp(data, "nodynperm", 9) == 0) { | |
1267 | vol->dynperm = false; | |
1da177e4 LT |
1268 | } else if (strnicmp(data, "nohard", 6) == 0) { |
1269 | vol->retry = 0; | |
1270 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1271 | vol->retry = 1; | |
1272 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1273 | vol->intr = 0; | |
1274 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1275 | vol->intr = 1; | |
50c2f753 | 1276 | } else if (strnicmp(data, "serverino", 7) == 0) { |
1da177e4 | 1277 | vol->server_ino = 1; |
50c2f753 | 1278 | } else if (strnicmp(data, "noserverino", 9) == 0) { |
1da177e4 | 1279 | vol->server_ino = 0; |
50c2f753 | 1280 | } else if (strnicmp(data, "cifsacl", 7) == 0) { |
0a4b92c0 SF |
1281 | vol->cifs_acl = 1; |
1282 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1283 | vol->cifs_acl = 0; | |
50c2f753 | 1284 | } else if (strnicmp(data, "acl", 3) == 0) { |
1da177e4 | 1285 | vol->no_psx_acl = 0; |
50c2f753 | 1286 | } else if (strnicmp(data, "noacl", 5) == 0) { |
1da177e4 | 1287 | vol->no_psx_acl = 1; |
84210e91 SF |
1288 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
1289 | } else if (strnicmp(data, "locallease", 6) == 0) { | |
1290 | vol->local_lease = 1; | |
1291 | #endif | |
50c2f753 | 1292 | } else if (strnicmp(data, "sign", 4) == 0) { |
750d1151 | 1293 | vol->secFlg |= CIFSSEC_MUST_SIGN; |
95b1cb90 SF |
1294 | } else if (strnicmp(data, "seal", 4) == 0) { |
1295 | /* we do not do the following in secFlags because seal | |
1296 | is a per tree connection (mount) not a per socket | |
1297 | or per-smb connection option in the protocol */ | |
1298 | /* vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
1299 | vol->seal = 1; | |
50c2f753 | 1300 | } else if (strnicmp(data, "direct", 6) == 0) { |
1da177e4 | 1301 | vol->direct_io = 1; |
50c2f753 | 1302 | } else if (strnicmp(data, "forcedirectio", 13) == 0) { |
1da177e4 | 1303 | vol->direct_io = 1; |
50c2f753 | 1304 | } else if (strnicmp(data, "in6_addr", 8) == 0) { |
1da177e4 LT |
1305 | if (!value || !*value) { |
1306 | vol->in6_addr = NULL; | |
1307 | } else if (strnlen(value, 49) == 48) { | |
1308 | vol->in6_addr = value; | |
1309 | } else { | |
50c2f753 SF |
1310 | printk(KERN_WARNING "CIFS: ip v6 address not " |
1311 | "48 characters long\n"); | |
1da177e4 LT |
1312 | return 1; |
1313 | } | |
1314 | } else if (strnicmp(data, "noac", 4) == 0) { | |
50c2f753 SF |
1315 | printk(KERN_WARNING "CIFS: Mount option noac not " |
1316 | "supported. Instead set " | |
1317 | "/proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1da177e4 | 1318 | } else |
50c2f753 SF |
1319 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n", |
1320 | data); | |
1da177e4 LT |
1321 | } |
1322 | if (vol->UNC == NULL) { | |
4523cc30 | 1323 | if (devname == NULL) { |
50c2f753 SF |
1324 | printk(KERN_WARNING "CIFS: Missing UNC name for mount " |
1325 | "target\n"); | |
1da177e4 LT |
1326 | return 1; |
1327 | } | |
1328 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
50c2f753 | 1329 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1330 | if (vol->UNC == NULL) |
1da177e4 | 1331 | return 1; |
50c2f753 | 1332 | strcpy(vol->UNC, devname); |
1da177e4 LT |
1333 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1334 | vol->UNC[0] = '\\'; | |
1335 | vol->UNC[1] = '\\'; | |
1336 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
50c2f753 SF |
1337 | printk(KERN_WARNING "CIFS: UNC Path does not " |
1338 | "begin with // or \\\\ \n"); | |
1da177e4 LT |
1339 | return 1; |
1340 | } | |
7c5e628f IM |
1341 | value = strpbrk(vol->UNC+2, "/\\"); |
1342 | if (value) | |
1343 | *value = '\\'; | |
1da177e4 LT |
1344 | } else { |
1345 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1346 | return 1; | |
1347 | } | |
1348 | } | |
fb8c4b14 | 1349 | if (vol->UNCip == NULL) |
1da177e4 LT |
1350 | vol->UNCip = &vol->UNC[2]; |
1351 | ||
1352 | return 0; | |
1353 | } | |
1354 | ||
1355 | static struct cifsSesInfo * | |
50c2f753 | 1356 | cifs_find_tcp_session(struct in_addr *target_ip_addr, |
1b20d672 CG |
1357 | struct in6_addr *target_ip6_addr, |
1358 | char *userName, struct TCP_Server_Info **psrvTcp) | |
1da177e4 LT |
1359 | { |
1360 | struct list_head *tmp; | |
1361 | struct cifsSesInfo *ses; | |
1b20d672 | 1362 | |
1da177e4 | 1363 | *psrvTcp = NULL; |
1da177e4 | 1364 | |
1b20d672 | 1365 | read_lock(&GlobalSMBSeslock); |
1da177e4 LT |
1366 | list_for_each(tmp, &GlobalSMBSessionList) { |
1367 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
1b20d672 CG |
1368 | if (!ses->server) |
1369 | continue; | |
1370 | ||
1371 | if (target_ip_addr && | |
1372 | ses->server->addr.sockAddr.sin_addr.s_addr != target_ip_addr->s_addr) | |
1373 | continue; | |
1374 | else if (target_ip6_addr && | |
1375 | memcmp(&ses->server->addr.sockAddr6.sin6_addr, | |
1376 | target_ip6_addr, sizeof(*target_ip6_addr))) | |
1377 | continue; | |
02eadeff | 1378 | /* BB lock server and tcp session; increment use count here?? */ |
1b20d672 CG |
1379 | |
1380 | /* found a match on the TCP session */ | |
1381 | *psrvTcp = ses->server; | |
1382 | ||
1383 | /* BB check if reconnection needed */ | |
1384 | if (strncmp(ses->userName, userName, MAX_USERNAME_SIZE) == 0) { | |
1385 | read_unlock(&GlobalSMBSeslock); | |
1386 | /* Found exact match on both TCP and | |
1387 | SMB sessions */ | |
1388 | return ses; | |
1da177e4 LT |
1389 | } |
1390 | /* else tcp and smb sessions need reconnection */ | |
1391 | } | |
1392 | read_unlock(&GlobalSMBSeslock); | |
1b20d672 | 1393 | |
1da177e4 LT |
1394 | return NULL; |
1395 | } | |
1396 | ||
1397 | static struct cifsTconInfo * | |
1398 | find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) | |
1399 | { | |
1400 | struct list_head *tmp; | |
1401 | struct cifsTconInfo *tcon; | |
dea570e0 | 1402 | __be32 old_ip; |
1da177e4 LT |
1403 | |
1404 | read_lock(&GlobalSMBSeslock); | |
dea570e0 | 1405 | |
1da177e4 | 1406 | list_for_each(tmp, &GlobalTreeConnectionList) { |
e466e487 | 1407 | cFYI(1, ("Next tcon")); |
1da177e4 | 1408 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); |
dea570e0 SF |
1409 | if (!tcon->ses || !tcon->ses->server) |
1410 | continue; | |
1411 | ||
1412 | old_ip = tcon->ses->server->addr.sockAddr.sin_addr.s_addr; | |
1413 | cFYI(1, ("old ip addr: %x == new ip %x ?", | |
1414 | old_ip, new_target_ip_addr)); | |
1415 | ||
1416 | if (old_ip != new_target_ip_addr) | |
1417 | continue; | |
1418 | ||
1419 | /* BB lock tcon, server, tcp session and increment use count? */ | |
1420 | /* found a match on the TCP session */ | |
1421 | /* BB check if reconnection needed */ | |
1422 | cFYI(1, ("IP match, old UNC: %s new: %s", | |
1423 | tcon->treeName, uncName)); | |
1424 | ||
1425 | if (strncmp(tcon->treeName, uncName, MAX_TREE_SIZE)) | |
1426 | continue; | |
1427 | ||
1428 | cFYI(1, ("and old usr: %s new: %s", | |
1429 | tcon->treeName, uncName)); | |
1430 | ||
1431 | if (strncmp(tcon->ses->userName, userName, MAX_USERNAME_SIZE)) | |
1432 | continue; | |
1433 | ||
1434 | /* matched smb session (user name) */ | |
1435 | read_unlock(&GlobalSMBSeslock); | |
1436 | return tcon; | |
1da177e4 | 1437 | } |
dea570e0 | 1438 | |
1da177e4 LT |
1439 | read_unlock(&GlobalSMBSeslock); |
1440 | return NULL; | |
1441 | } | |
1442 | ||
1da177e4 | 1443 | int |
50c2f753 SF |
1444 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, |
1445 | const struct nls_table *nls_codepage, unsigned int *pnum_referrals, | |
366781c1 | 1446 | struct dfs_info3_param **preferrals, int remap) |
1da177e4 LT |
1447 | { |
1448 | char *temp_unc; | |
1449 | int rc = 0; | |
1450 | ||
1451 | *pnum_referrals = 0; | |
366781c1 | 1452 | *preferrals = NULL; |
1da177e4 LT |
1453 | |
1454 | if (pSesInfo->ipc_tid == 0) { | |
1455 | temp_unc = kmalloc(2 /* for slashes */ + | |
50c2f753 SF |
1456 | strnlen(pSesInfo->serverName, |
1457 | SERVER_NAME_LEN_WITH_NULL * 2) | |
1da177e4 LT |
1458 | + 1 + 4 /* slash IPC$ */ + 2, |
1459 | GFP_KERNEL); | |
1460 | if (temp_unc == NULL) | |
1461 | return -ENOMEM; | |
1462 | temp_unc[0] = '\\'; | |
1463 | temp_unc[1] = '\\'; | |
1464 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1465 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1466 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1467 | cFYI(1, | |
50c2f753 | 1468 | ("CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid)); |
1da177e4 LT |
1469 | kfree(temp_unc); |
1470 | } | |
1471 | if (rc == 0) | |
c2cf07d5 | 1472 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, |
737b758c | 1473 | pnum_referrals, nls_codepage, remap); |
366781c1 SF |
1474 | /* BB map targetUNCs to dfs_info3 structures, here or |
1475 | in CIFSGetDFSRefer BB */ | |
1da177e4 LT |
1476 | |
1477 | return rc; | |
1478 | } | |
1479 | ||
09e50d55 JL |
1480 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
1481 | static struct lock_class_key cifs_key[2]; | |
1482 | static struct lock_class_key cifs_slock_key[2]; | |
1483 | ||
1484 | static inline void | |
1485 | cifs_reclassify_socket4(struct socket *sock) | |
1486 | { | |
1487 | struct sock *sk = sock->sk; | |
1488 | BUG_ON(sock_owned_by_user(sk)); | |
1489 | sock_lock_init_class_and_name(sk, "slock-AF_INET-CIFS", | |
1490 | &cifs_slock_key[0], "sk_lock-AF_INET-CIFS", &cifs_key[0]); | |
1491 | } | |
1492 | ||
1493 | static inline void | |
1494 | cifs_reclassify_socket6(struct socket *sock) | |
1495 | { | |
1496 | struct sock *sk = sock->sk; | |
1497 | BUG_ON(sock_owned_by_user(sk)); | |
1498 | sock_lock_init_class_and_name(sk, "slock-AF_INET6-CIFS", | |
1499 | &cifs_slock_key[1], "sk_lock-AF_INET6-CIFS", &cifs_key[1]); | |
1500 | } | |
1501 | #else | |
1502 | static inline void | |
1503 | cifs_reclassify_socket4(struct socket *sock) | |
1504 | { | |
1505 | } | |
1506 | ||
1507 | static inline void | |
1508 | cifs_reclassify_socket6(struct socket *sock) | |
1509 | { | |
1510 | } | |
1511 | #endif | |
1512 | ||
1da177e4 | 1513 | /* See RFC1001 section 14 on representation of Netbios names */ |
50c2f753 | 1514 | static void rfc1002mangle(char *target, char *source, unsigned int length) |
1da177e4 | 1515 | { |
50c2f753 | 1516 | unsigned int i, j; |
1da177e4 | 1517 | |
50c2f753 | 1518 | for (i = 0, j = 0; i < (length); i++) { |
1da177e4 LT |
1519 | /* mask a nibble at a time and encode */ |
1520 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1521 | target[j+1] = 'A' + (0x0F & source[i]); | |
50c2f753 | 1522 | j += 2; |
1da177e4 LT |
1523 | } |
1524 | ||
1525 | } | |
1526 | ||
1527 | ||
1528 | static int | |
50c2f753 | 1529 | ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, |
edf1ae40 SF |
1530 | char *netbios_name, char *target_name, |
1531 | bool noblocksnd, bool noautotune) | |
1da177e4 LT |
1532 | { |
1533 | int rc = 0; | |
1534 | int connected = 0; | |
1535 | __be16 orig_port = 0; | |
1536 | ||
fb8c4b14 | 1537 | if (*csocket == NULL) { |
50c2f753 SF |
1538 | rc = sock_create_kern(PF_INET, SOCK_STREAM, |
1539 | IPPROTO_TCP, csocket); | |
1da177e4 | 1540 | if (rc < 0) { |
50c2f753 | 1541 | cERROR(1, ("Error %d creating socket", rc)); |
1da177e4 LT |
1542 | *csocket = NULL; |
1543 | return rc; | |
1544 | } else { | |
1545 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
467a8f8d | 1546 | cFYI(1, ("Socket created")); |
50c2f753 | 1547 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
09e50d55 | 1548 | cifs_reclassify_socket4(*csocket); |
1da177e4 LT |
1549 | } |
1550 | } | |
1551 | ||
1552 | psin_server->sin_family = AF_INET; | |
fb8c4b14 | 1553 | if (psin_server->sin_port) { /* user overrode default port */ |
1da177e4 LT |
1554 | rc = (*csocket)->ops->connect(*csocket, |
1555 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1556 | sizeof(struct sockaddr_in), 0); |
1da177e4 LT |
1557 | if (rc >= 0) |
1558 | connected = 1; | |
50c2f753 | 1559 | } |
1da177e4 | 1560 | |
fb8c4b14 | 1561 | if (!connected) { |
50c2f753 | 1562 | /* save original port so we can retry user specified port |
1da177e4 LT |
1563 | later if fall back ports fail this time */ |
1564 | orig_port = psin_server->sin_port; | |
1565 | ||
1566 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1567 | if (psin_server->sin_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1568 | psin_server->sin_port = htons(CIFS_PORT); |
1569 | ||
1570 | rc = (*csocket)->ops->connect(*csocket, | |
1571 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1572 | sizeof(struct sockaddr_in), 0); |
1da177e4 LT |
1573 | if (rc >= 0) |
1574 | connected = 1; | |
1575 | } | |
1576 | } | |
1577 | if (!connected) { | |
1578 | psin_server->sin_port = htons(RFC1001_PORT); | |
1579 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
50c2f753 | 1580 | psin_server, |
6345a3a8 | 1581 | sizeof(struct sockaddr_in), 0); |
50c2f753 | 1582 | if (rc >= 0) |
1da177e4 LT |
1583 | connected = 1; |
1584 | } | |
1585 | ||
1586 | /* give up here - unless we want to retry on different | |
1587 | protocol families some day */ | |
1588 | if (!connected) { | |
fb8c4b14 | 1589 | if (orig_port) |
1da177e4 | 1590 | psin_server->sin_port = orig_port; |
50c2f753 | 1591 | cFYI(1, ("Error %d connecting to server via ipv4", rc)); |
1da177e4 LT |
1592 | sock_release(*csocket); |
1593 | *csocket = NULL; | |
1594 | return rc; | |
1595 | } | |
50c2f753 SF |
1596 | /* Eventually check for other socket options to change from |
1597 | the default. sock_setsockopt not used because it expects | |
1da177e4 | 1598 | user space buffer */ |
50c2f753 SF |
1599 | cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", |
1600 | (*csocket)->sk->sk_sndbuf, | |
b387eaeb | 1601 | (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo)); |
1da177e4 | 1602 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; |
edf1ae40 SF |
1603 | if (!noblocksnd) |
1604 | (*csocket)->sk->sk_sndtimeo = 3 * HZ; | |
1605 | ||
b387eaeb | 1606 | /* make the bufsizes depend on wsize/rsize and max requests */ |
edf1ae40 SF |
1607 | if (noautotune) { |
1608 | if ((*csocket)->sk->sk_sndbuf < (200 * 1024)) | |
1609 | (*csocket)->sk->sk_sndbuf = 200 * 1024; | |
1610 | if ((*csocket)->sk->sk_rcvbuf < (140 * 1024)) | |
1611 | (*csocket)->sk->sk_rcvbuf = 140 * 1024; | |
1612 | } | |
1da177e4 LT |
1613 | |
1614 | /* send RFC1001 sessinit */ | |
fb8c4b14 | 1615 | if (psin_server->sin_port == htons(RFC1001_PORT)) { |
1da177e4 | 1616 | /* some servers require RFC1001 sessinit before sending |
50c2f753 | 1617 | negprot - BB check reconnection in case where second |
1da177e4 | 1618 | sessinit is sent but no second negprot */ |
50c2f753 SF |
1619 | struct rfc1002_session_packet *ses_init_buf; |
1620 | struct smb_hdr *smb_buf; | |
1621 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), | |
1622 | GFP_KERNEL); | |
fb8c4b14 | 1623 | if (ses_init_buf) { |
1da177e4 | 1624 | ses_init_buf->trailer.session_req.called_len = 32; |
fb8c4b14 | 1625 | if (target_name && (target_name[0] != 0)) { |
a10faeb2 SF |
1626 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, |
1627 | target_name, 16); | |
1628 | } else { | |
1629 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
50c2f753 | 1630 | DEFAULT_CIFS_CALLED_NAME, 16); |
a10faeb2 SF |
1631 | } |
1632 | ||
1da177e4 LT |
1633 | ses_init_buf->trailer.session_req.calling_len = 32; |
1634 | /* calling name ends in null (byte 16) from old smb | |
1635 | convention. */ | |
50c2f753 | 1636 | if (netbios_name && (netbios_name[0] != 0)) { |
1da177e4 | 1637 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, |
50c2f753 | 1638 | netbios_name, 16); |
1da177e4 LT |
1639 | } else { |
1640 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
50c2f753 | 1641 | "LINUX_CIFS_CLNT", 16); |
1da177e4 LT |
1642 | } |
1643 | ses_init_buf->trailer.session_req.scope1 = 0; | |
1644 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1645 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1646 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1647 | smb_buf->smb_buf_length = 0x81000044; | |
1648 | rc = smb_send(*csocket, smb_buf, 0x44, | |
edf1ae40 | 1649 | (struct sockaddr *)psin_server, noblocksnd); |
1da177e4 | 1650 | kfree(ses_init_buf); |
50c2f753 | 1651 | msleep(1); /* RFC1001 layer in at least one server |
083d3a2c SF |
1652 | requires very short break before negprot |
1653 | presumably because not expecting negprot | |
1654 | to follow so fast. This is a simple | |
50c2f753 | 1655 | solution that works without |
083d3a2c SF |
1656 | complicating the code and causes no |
1657 | significant slowing down on mount | |
1658 | for everyone else */ | |
1da177e4 | 1659 | } |
50c2f753 | 1660 | /* else the negprot may still work without this |
1da177e4 | 1661 | even though malloc failed */ |
50c2f753 | 1662 | |
1da177e4 | 1663 | } |
50c2f753 | 1664 | |
1da177e4 LT |
1665 | return rc; |
1666 | } | |
1667 | ||
1668 | static int | |
edf1ae40 SF |
1669 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket, |
1670 | bool noblocksnd) | |
1da177e4 LT |
1671 | { |
1672 | int rc = 0; | |
1673 | int connected = 0; | |
1674 | __be16 orig_port = 0; | |
1675 | ||
fb8c4b14 | 1676 | if (*csocket == NULL) { |
50c2f753 SF |
1677 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, |
1678 | IPPROTO_TCP, csocket); | |
1da177e4 | 1679 | if (rc < 0) { |
50c2f753 | 1680 | cERROR(1, ("Error %d creating ipv6 socket", rc)); |
1da177e4 LT |
1681 | *csocket = NULL; |
1682 | return rc; | |
1683 | } else { | |
1684 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
fb8c4b14 | 1685 | cFYI(1, ("ipv6 Socket created")); |
1da177e4 | 1686 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
09e50d55 | 1687 | cifs_reclassify_socket6(*csocket); |
1da177e4 LT |
1688 | } |
1689 | } | |
1690 | ||
1691 | psin_server->sin6_family = AF_INET6; | |
1692 | ||
fb8c4b14 | 1693 | if (psin_server->sin6_port) { /* user overrode default port */ |
1da177e4 LT |
1694 | rc = (*csocket)->ops->connect(*csocket, |
1695 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1696 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1697 | if (rc >= 0) |
1698 | connected = 1; | |
50c2f753 | 1699 | } |
1da177e4 | 1700 | |
fb8c4b14 | 1701 | if (!connected) { |
50c2f753 | 1702 | /* save original port so we can retry user specified port |
1da177e4 LT |
1703 | later if fall back ports fail this time */ |
1704 | ||
1705 | orig_port = psin_server->sin6_port; | |
1706 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1707 | if (psin_server->sin6_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1708 | psin_server->sin6_port = htons(CIFS_PORT); |
1709 | ||
1710 | rc = (*csocket)->ops->connect(*csocket, | |
1711 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1712 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1713 | if (rc >= 0) |
1714 | connected = 1; | |
1715 | } | |
1716 | } | |
1717 | if (!connected) { | |
1718 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1719 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
6345a3a8 | 1720 | psin_server, sizeof(struct sockaddr_in6), 0); |
50c2f753 | 1721 | if (rc >= 0) |
1da177e4 LT |
1722 | connected = 1; |
1723 | } | |
1724 | ||
1725 | /* give up here - unless we want to retry on different | |
1726 | protocol families some day */ | |
1727 | if (!connected) { | |
fb8c4b14 | 1728 | if (orig_port) |
1da177e4 | 1729 | psin_server->sin6_port = orig_port; |
50c2f753 | 1730 | cFYI(1, ("Error %d connecting to server via ipv6", rc)); |
1da177e4 LT |
1731 | sock_release(*csocket); |
1732 | *csocket = NULL; | |
1733 | return rc; | |
1734 | } | |
50c2f753 SF |
1735 | /* Eventually check for other socket options to change from |
1736 | the default. sock_setsockopt not used because it expects | |
1da177e4 LT |
1737 | user space buffer */ |
1738 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
edf1ae40 SF |
1739 | if (!noblocksnd) |
1740 | (*csocket)->sk->sk_sndtimeo = 3 * HZ; | |
1741 | ||
50c2f753 | 1742 | |
1da177e4 LT |
1743 | return rc; |
1744 | } | |
1745 | ||
50c2f753 SF |
1746 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon, |
1747 | struct super_block *sb, struct smb_vol *vol_info) | |
8af18971 SF |
1748 | { |
1749 | /* if we are reconnecting then should we check to see if | |
1750 | * any requested capabilities changed locally e.g. via | |
1751 | * remount but we can not do much about it here | |
1752 | * if they have (even if we could detect it by the following) | |
1753 | * Perhaps we could add a backpointer to array of sb from tcon | |
1754 | * or if we change to make all sb to same share the same | |
1755 | * sb as NFS - then we only have one backpointer to sb. | |
1756 | * What if we wanted to mount the server share twice once with | |
1757 | * and once without posixacls or posix paths? */ | |
1758 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
50c2f753 | 1759 | |
c18c842b SF |
1760 | if (vol_info && vol_info->no_linux_ext) { |
1761 | tcon->fsUnixInfo.Capability = 0; | |
1762 | tcon->unix_ext = 0; /* Unix Extensions disabled */ | |
1763 | cFYI(1, ("Linux protocol extensions disabled")); | |
1764 | return; | |
1765 | } else if (vol_info) | |
1766 | tcon->unix_ext = 1; /* Unix Extensions supported */ | |
1767 | ||
1768 | if (tcon->unix_ext == 0) { | |
1769 | cFYI(1, ("Unix extensions disabled so not set on reconnect")); | |
1770 | return; | |
1771 | } | |
50c2f753 | 1772 | |
fb8c4b14 | 1773 | if (!CIFSSMBQFSUnixInfo(xid, tcon)) { |
8af18971 | 1774 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
50c2f753 | 1775 | |
8af18971 SF |
1776 | /* check for reconnect case in which we do not |
1777 | want to change the mount behavior if we can avoid it */ | |
fb8c4b14 | 1778 | if (vol_info == NULL) { |
50c2f753 | 1779 | /* turn off POSIX ACL and PATHNAMES if not set |
8af18971 SF |
1780 | originally at mount time */ |
1781 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) | |
1782 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
11b6d645 IM |
1783 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1784 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) | |
1785 | cERROR(1, ("POSIXPATH support change")); | |
8af18971 | 1786 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
11b6d645 IM |
1787 | } else if ((cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1788 | cERROR(1, ("possible reconnect error")); | |
1789 | cERROR(1, | |
1790 | ("server disabled POSIX path support")); | |
1791 | } | |
8af18971 | 1792 | } |
50c2f753 | 1793 | |
8af18971 | 1794 | cap &= CIFS_UNIX_CAP_MASK; |
75865f8c | 1795 | if (vol_info && vol_info->no_psx_acl) |
8af18971 | 1796 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
75865f8c | 1797 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
fb8c4b14 SF |
1798 | cFYI(1, ("negotiated posix acl support")); |
1799 | if (sb) | |
8af18971 SF |
1800 | sb->s_flags |= MS_POSIXACL; |
1801 | } | |
1802 | ||
75865f8c | 1803 | if (vol_info && vol_info->posix_paths == 0) |
8af18971 | 1804 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
75865f8c | 1805 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
fb8c4b14 | 1806 | cFYI(1, ("negotiate posix pathnames")); |
75865f8c | 1807 | if (sb) |
50c2f753 | 1808 | CIFS_SB(sb)->mnt_cifs_flags |= |
8af18971 SF |
1809 | CIFS_MOUNT_POSIX_PATHS; |
1810 | } | |
50c2f753 | 1811 | |
984acfe1 SF |
1812 | /* We might be setting the path sep back to a different |
1813 | form if we are reconnecting and the server switched its | |
50c2f753 | 1814 | posix path capability for this share */ |
75865f8c | 1815 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
984acfe1 | 1816 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
75865f8c SF |
1817 | |
1818 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { | |
1819 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { | |
1820 | CIFS_SB(sb)->rsize = 127 * 1024; | |
90c81e0b SF |
1821 | cFYI(DBG2, |
1822 | ("larger reads not supported by srv")); | |
75865f8c SF |
1823 | } |
1824 | } | |
50c2f753 SF |
1825 | |
1826 | ||
1827 | cFYI(1, ("Negotiate caps 0x%x", (int)cap)); | |
8af18971 | 1828 | #ifdef CONFIG_CIFS_DEBUG2 |
75865f8c | 1829 | if (cap & CIFS_UNIX_FCNTL_CAP) |
fb8c4b14 | 1830 | cFYI(1, ("FCNTL cap")); |
75865f8c | 1831 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
fb8c4b14 | 1832 | cFYI(1, ("EXTATTR cap")); |
75865f8c | 1833 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
fb8c4b14 | 1834 | cFYI(1, ("POSIX path cap")); |
75865f8c | 1835 | if (cap & CIFS_UNIX_XATTR_CAP) |
fb8c4b14 | 1836 | cFYI(1, ("XATTR cap")); |
75865f8c | 1837 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
fb8c4b14 | 1838 | cFYI(1, ("POSIX ACL cap")); |
75865f8c | 1839 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
fb8c4b14 | 1840 | cFYI(1, ("very large read cap")); |
75865f8c | 1841 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) |
fb8c4b14 | 1842 | cFYI(1, ("very large write cap")); |
8af18971 SF |
1843 | #endif /* CIFS_DEBUG2 */ |
1844 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
442aa310 | 1845 | if (vol_info == NULL) { |
5a44b319 | 1846 | cFYI(1, ("resetting capabilities failed")); |
442aa310 | 1847 | } else |
5a44b319 SF |
1848 | cERROR(1, ("Negotiating Unix capabilities " |
1849 | "with the server failed. Consider " | |
1850 | "mounting with the Unix Extensions\n" | |
1851 | "disabled, if problems are found, " | |
1852 | "by specifying the nounix mount " | |
2224f4e5 | 1853 | "option.")); |
5a44b319 | 1854 | |
8af18971 SF |
1855 | } |
1856 | } | |
1857 | } | |
1858 | ||
03a143c9 SF |
1859 | static void |
1860 | convert_delimiter(char *path, char delim) | |
1861 | { | |
1862 | int i; | |
c2d68ea6 | 1863 | char old_delim; |
03a143c9 SF |
1864 | |
1865 | if (path == NULL) | |
1866 | return; | |
1867 | ||
582d21e5 | 1868 | if (delim == '/') |
c2d68ea6 SF |
1869 | old_delim = '\\'; |
1870 | else | |
1871 | old_delim = '/'; | |
1872 | ||
03a143c9 | 1873 | for (i = 0; path[i] != '\0'; i++) { |
c2d68ea6 | 1874 | if (path[i] == old_delim) |
03a143c9 SF |
1875 | path[i] = delim; |
1876 | } | |
1877 | } | |
1878 | ||
b1c8d2b4 JL |
1879 | static void |
1880 | kill_cifsd(struct TCP_Server_Info *server) | |
1881 | { | |
1882 | struct task_struct *task; | |
1883 | ||
1884 | task = xchg(&server->tsk, NULL); | |
1885 | if (task) | |
1886 | force_sig(SIGKILL, task); | |
1887 | } | |
1888 | ||
1da177e4 LT |
1889 | int |
1890 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1891 | char *mount_data, const char *devname) | |
1892 | { | |
1893 | int rc = 0; | |
1894 | int xid; | |
1895 | int address_type = AF_INET; | |
1896 | struct socket *csocket = NULL; | |
1897 | struct sockaddr_in sin_server; | |
1898 | struct sockaddr_in6 sin_server6; | |
1899 | struct smb_vol volume_info; | |
1900 | struct cifsSesInfo *pSesInfo = NULL; | |
1901 | struct cifsSesInfo *existingCifsSes = NULL; | |
1902 | struct cifsTconInfo *tcon = NULL; | |
1903 | struct TCP_Server_Info *srvTcp = NULL; | |
1904 | ||
1905 | xid = GetXid(); | |
1906 | ||
1907 | /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ | |
50c2f753 SF |
1908 | |
1909 | memset(&volume_info, 0, sizeof(struct smb_vol)); | |
1da177e4 | 1910 | if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { |
70fe7dc0 JL |
1911 | rc = -EINVAL; |
1912 | goto out; | |
1da177e4 LT |
1913 | } |
1914 | ||
8426c39c | 1915 | if (volume_info.nullauth) { |
fb8c4b14 | 1916 | cFYI(1, ("null user")); |
9b8f5f57 | 1917 | volume_info.username = ""; |
8426c39c | 1918 | } else if (volume_info.username) { |
1da177e4 | 1919 | /* BB fixme parse for domain name here */ |
467a8f8d | 1920 | cFYI(1, ("Username: %s", volume_info.username)); |
1da177e4 | 1921 | } else { |
bf820679 | 1922 | cifserror("No username specified"); |
50c2f753 SF |
1923 | /* In userspace mount helper we can get user name from alternate |
1924 | locations such as env variables and files on disk */ | |
70fe7dc0 JL |
1925 | rc = -EINVAL; |
1926 | goto out; | |
1da177e4 LT |
1927 | } |
1928 | ||
1929 | if (volume_info.UNCip && volume_info.UNC) { | |
50c2f753 SF |
1930 | rc = cifs_inet_pton(AF_INET, volume_info.UNCip, |
1931 | &sin_server.sin_addr.s_addr); | |
1da177e4 | 1932 | |
fb8c4b14 | 1933 | if (rc <= 0) { |
1da177e4 | 1934 | /* not ipv4 address, try ipv6 */ |
50c2f753 SF |
1935 | rc = cifs_inet_pton(AF_INET6, volume_info.UNCip, |
1936 | &sin_server6.sin6_addr.in6_u); | |
fb8c4b14 | 1937 | if (rc > 0) |
1da177e4 LT |
1938 | address_type = AF_INET6; |
1939 | } else { | |
1940 | address_type = AF_INET; | |
1941 | } | |
50c2f753 | 1942 | |
fb8c4b14 | 1943 | if (rc <= 0) { |
1da177e4 | 1944 | /* we failed translating address */ |
70fe7dc0 JL |
1945 | rc = -EINVAL; |
1946 | goto out; | |
1da177e4 LT |
1947 | } |
1948 | ||
1949 | cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); | |
1950 | /* success */ | |
1951 | rc = 0; | |
50c2f753 SF |
1952 | } else if (volume_info.UNCip) { |
1953 | /* BB using ip addr as server name to connect to the | |
1954 | DFS root below */ | |
1955 | cERROR(1, ("Connecting to DFS root not implemented yet")); | |
70fe7dc0 JL |
1956 | rc = -EINVAL; |
1957 | goto out; | |
1da177e4 LT |
1958 | } else /* which servers DFS root would we conect to */ { |
1959 | cERROR(1, | |
50c2f753 SF |
1960 | ("CIFS mount error: No UNC path (e.g. -o " |
1961 | "unc=//192.168.1.100/public) specified")); | |
70fe7dc0 JL |
1962 | rc = -EINVAL; |
1963 | goto out; | |
1da177e4 LT |
1964 | } |
1965 | ||
1966 | /* this is needed for ASCII cp to Unicode converts */ | |
fb8c4b14 | 1967 | if (volume_info.iocharset == NULL) { |
1da177e4 LT |
1968 | cifs_sb->local_nls = load_nls_default(); |
1969 | /* load_nls_default can not return null */ | |
1970 | } else { | |
1971 | cifs_sb->local_nls = load_nls(volume_info.iocharset); | |
fb8c4b14 | 1972 | if (cifs_sb->local_nls == NULL) { |
50c2f753 SF |
1973 | cERROR(1, ("CIFS mount error: iocharset %s not found", |
1974 | volume_info.iocharset)); | |
70fe7dc0 JL |
1975 | rc = -ELIBACC; |
1976 | goto out; | |
1da177e4 LT |
1977 | } |
1978 | } | |
1979 | ||
fb8c4b14 | 1980 | if (address_type == AF_INET) |
1da177e4 LT |
1981 | existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr, |
1982 | NULL /* no ipv6 addr */, | |
1983 | volume_info.username, &srvTcp); | |
fb8c4b14 SF |
1984 | else if (address_type == AF_INET6) { |
1985 | cFYI(1, ("looking for ipv6 address")); | |
1da177e4 LT |
1986 | existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */, |
1987 | &sin_server6.sin6_addr, | |
1988 | volume_info.username, &srvTcp); | |
5858ae44 | 1989 | } else { |
70fe7dc0 JL |
1990 | rc = -EINVAL; |
1991 | goto out; | |
1da177e4 LT |
1992 | } |
1993 | ||
1da177e4 | 1994 | if (srvTcp) { |
50c2f753 | 1995 | cFYI(1, ("Existing tcp session with server found")); |
1da177e4 | 1996 | } else { /* create socket */ |
4523cc30 | 1997 | if (volume_info.port) |
1da177e4 LT |
1998 | sin_server.sin_port = htons(volume_info.port); |
1999 | else | |
2000 | sin_server.sin_port = 0; | |
5858ae44 | 2001 | if (address_type == AF_INET6) { |
fb8c4b14 | 2002 | cFYI(1, ("attempting ipv6 connect")); |
5858ae44 SF |
2003 | /* BB should we allow ipv6 on port 139? */ |
2004 | /* other OS never observed in Wild doing 139 with v6 */ | |
edf1ae40 SF |
2005 | rc = ipv6_connect(&sin_server6, &csocket, |
2006 | volume_info.noblocksnd); | |
50c2f753 SF |
2007 | } else |
2008 | rc = ipv4_connect(&sin_server, &csocket, | |
a10faeb2 | 2009 | volume_info.source_rfc1001_name, |
edf1ae40 SF |
2010 | volume_info.target_rfc1001_name, |
2011 | volume_info.noblocksnd, | |
2012 | volume_info.noautotune); | |
1da177e4 | 2013 | if (rc < 0) { |
50c2f753 SF |
2014 | cERROR(1, ("Error connecting to IPv4 socket. " |
2015 | "Aborting operation")); | |
4523cc30 | 2016 | if (csocket != NULL) |
1da177e4 | 2017 | sock_release(csocket); |
70fe7dc0 | 2018 | goto out; |
1da177e4 LT |
2019 | } |
2020 | ||
a8a11d39 MK |
2021 | srvTcp = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); |
2022 | if (!srvTcp) { | |
1da177e4 LT |
2023 | rc = -ENOMEM; |
2024 | sock_release(csocket); | |
70fe7dc0 | 2025 | goto out; |
1da177e4 | 2026 | } else { |
edf1ae40 SF |
2027 | srvTcp->noblocksnd = volume_info.noblocksnd; |
2028 | srvTcp->noautotune = volume_info.noautotune; | |
50c2f753 | 2029 | memcpy(&srvTcp->addr.sockAddr, &sin_server, |
6345a3a8 | 2030 | sizeof(struct sockaddr_in)); |
50c2f753 | 2031 | atomic_set(&srvTcp->inFlight, 0); |
1da177e4 LT |
2032 | /* BB Add code for ipv6 case too */ |
2033 | srvTcp->ssocket = csocket; | |
2034 | srvTcp->protocolType = IPV4; | |
c359cf3c JL |
2035 | srvTcp->hostname = extract_hostname(volume_info.UNC); |
2036 | if (IS_ERR(srvTcp->hostname)) { | |
2037 | rc = PTR_ERR(srvTcp->hostname); | |
2038 | sock_release(csocket); | |
2039 | goto out; | |
2040 | } | |
1da177e4 LT |
2041 | init_waitqueue_head(&srvTcp->response_q); |
2042 | init_waitqueue_head(&srvTcp->request_q); | |
2043 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
2044 | /* at this point we are the only ones with the pointer | |
2045 | to the struct since the kernel thread not created yet | |
2046 | so no need to spinlock this init of tcpStatus */ | |
2047 | srvTcp->tcpStatus = CifsNew; | |
2048 | init_MUTEX(&srvTcp->tcpSem); | |
aaf737ad | 2049 | srvTcp->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, srvTcp, "cifsd"); |
8840dee9 | 2050 | if (IS_ERR(srvTcp->tsk)) { |
aaf737ad | 2051 | rc = PTR_ERR(srvTcp->tsk); |
50c2f753 | 2052 | cERROR(1, ("error %d create cifsd thread", rc)); |
aaf737ad | 2053 | srvTcp->tsk = NULL; |
1da177e4 | 2054 | sock_release(csocket); |
c359cf3c | 2055 | kfree(srvTcp->hostname); |
70fe7dc0 | 2056 | goto out; |
f191401f | 2057 | } |
f191401f | 2058 | rc = 0; |
50c2f753 SF |
2059 | memcpy(srvTcp->workstation_RFC1001_name, |
2060 | volume_info.source_rfc1001_name, 16); | |
2061 | memcpy(srvTcp->server_RFC1001_name, | |
2062 | volume_info.target_rfc1001_name, 16); | |
ad009ac9 | 2063 | srvTcp->sequence_number = 0; |
1da177e4 LT |
2064 | } |
2065 | } | |
2066 | ||
2067 | if (existingCifsSes) { | |
2068 | pSesInfo = existingCifsSes; | |
1d9a8852 JL |
2069 | cFYI(1, ("Existing smb sess found (status=%d)", |
2070 | pSesInfo->status)); | |
88e7d705 | 2071 | down(&pSesInfo->sesSem); |
1d9a8852 JL |
2072 | if (pSesInfo->status == CifsNeedReconnect) { |
2073 | cFYI(1, ("Session needs reconnect")); | |
1d9a8852 JL |
2074 | rc = cifs_setup_session(xid, pSesInfo, |
2075 | cifs_sb->local_nls); | |
1d9a8852 | 2076 | } |
88e7d705 | 2077 | up(&pSesInfo->sesSem); |
1da177e4 | 2078 | } else if (!rc) { |
bf820679 | 2079 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 LT |
2080 | pSesInfo = sesInfoAlloc(); |
2081 | if (pSesInfo == NULL) | |
2082 | rc = -ENOMEM; | |
2083 | else { | |
2084 | pSesInfo->server = srvTcp; | |
2085 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
2086 | NIPQUAD(sin_server.sin_addr.s_addr)); | |
2087 | } | |
2088 | ||
50c2f753 SF |
2089 | if (!rc) { |
2090 | /* volume_info.password freed at unmount */ | |
70fe7dc0 | 2091 | if (volume_info.password) { |
1da177e4 | 2092 | pSesInfo->password = volume_info.password; |
70fe7dc0 JL |
2093 | /* set to NULL to prevent freeing on exit */ |
2094 | volume_info.password = NULL; | |
2095 | } | |
1da177e4 LT |
2096 | if (volume_info.username) |
2097 | strncpy(pSesInfo->userName, | |
50c2f753 SF |
2098 | volume_info.username, |
2099 | MAX_USERNAME_SIZE); | |
3979877e SF |
2100 | if (volume_info.domainname) { |
2101 | int len = strlen(volume_info.domainname); | |
50c2f753 | 2102 | pSesInfo->domainName = |
3979877e | 2103 | kmalloc(len + 1, GFP_KERNEL); |
4523cc30 | 2104 | if (pSesInfo->domainName) |
3979877e SF |
2105 | strcpy(pSesInfo->domainName, |
2106 | volume_info.domainname); | |
2107 | } | |
1da177e4 | 2108 | pSesInfo->linux_uid = volume_info.linux_uid; |
750d1151 | 2109 | pSesInfo->overrideSecFlg = volume_info.secFlg; |
1da177e4 | 2110 | down(&pSesInfo->sesSem); |
189acaae | 2111 | /* BB FIXME need to pass vol->secFlgs BB */ |
50c2f753 SF |
2112 | rc = cifs_setup_session(xid, pSesInfo, |
2113 | cifs_sb->local_nls); | |
1da177e4 | 2114 | up(&pSesInfo->sesSem); |
4523cc30 | 2115 | if (!rc) |
1da177e4 | 2116 | atomic_inc(&srvTcp->socketUseCount); |
70fe7dc0 | 2117 | } |
1da177e4 | 2118 | } |
50c2f753 | 2119 | |
1da177e4 LT |
2120 | /* search for existing tcon to this server share */ |
2121 | if (!rc) { | |
4523cc30 | 2122 | if (volume_info.rsize > CIFSMaxBufSize) { |
50c2f753 | 2123 | cERROR(1, ("rsize %d too large, using MaxBufSize", |
0ae0efad SF |
2124 | volume_info.rsize)); |
2125 | cifs_sb->rsize = CIFSMaxBufSize; | |
75865f8c SF |
2126 | } else if ((volume_info.rsize) && |
2127 | (volume_info.rsize <= CIFSMaxBufSize)) | |
1da177e4 | 2128 | cifs_sb->rsize = volume_info.rsize; |
0ae0efad SF |
2129 | else /* default */ |
2130 | cifs_sb->rsize = CIFSMaxBufSize; | |
2131 | ||
4523cc30 | 2132 | if (volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { |
50c2f753 | 2133 | cERROR(1, ("wsize %d too large, using 4096 instead", |
0ae0efad SF |
2134 | volume_info.wsize)); |
2135 | cifs_sb->wsize = 4096; | |
4523cc30 | 2136 | } else if (volume_info.wsize) |
1da177e4 LT |
2137 | cifs_sb->wsize = volume_info.wsize; |
2138 | else | |
50c2f753 | 2139 | cifs_sb->wsize = |
1877c9ea SF |
2140 | min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE, |
2141 | 127*1024); | |
17cbbafe | 2142 | /* old default of CIFSMaxBufSize was too small now |
50c2f753 | 2143 | that SMB Write2 can send multiple pages in kvec. |
17cbbafe SF |
2144 | RFC1001 does not describe what happens when frame |
2145 | bigger than 128K is sent so use that as max in | |
2146 | conjunction with 52K kvec constraint on arch with 4K | |
2147 | page size */ | |
2148 | ||
4523cc30 | 2149 | if (cifs_sb->rsize < 2048) { |
50c2f753 | 2150 | cifs_sb->rsize = 2048; |
6cec2aed | 2151 | /* Windows ME may prefer this */ |
467a8f8d | 2152 | cFYI(1, ("readsize set to minimum: 2048")); |
1da177e4 | 2153 | } |
2fe87f02 SF |
2154 | /* calculate prepath */ |
2155 | cifs_sb->prepath = volume_info.prepath; | |
4523cc30 | 2156 | if (cifs_sb->prepath) { |
2fe87f02 | 2157 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); |
03a143c9 SF |
2158 | /* we can not convert the / to \ in the path |
2159 | separators in the prefixpath yet because we do not | |
2160 | know (until reset_cifs_unix_caps is called later) | |
2161 | whether POSIX PATH CAP is available. We normalize | |
2162 | the / to \ after reset_cifs_unix_caps is called */ | |
2fe87f02 | 2163 | volume_info.prepath = NULL; |
50c2f753 | 2164 | } else |
2fe87f02 | 2165 | cifs_sb->prepathlen = 0; |
1da177e4 LT |
2166 | cifs_sb->mnt_uid = volume_info.linux_uid; |
2167 | cifs_sb->mnt_gid = volume_info.linux_gid; | |
2168 | cifs_sb->mnt_file_mode = volume_info.file_mode; | |
2169 | cifs_sb->mnt_dir_mode = volume_info.dir_mode; | |
467a8f8d SF |
2170 | cFYI(1, ("file mode: 0x%x dir mode: 0x%x", |
2171 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode)); | |
1da177e4 | 2172 | |
4523cc30 | 2173 | if (volume_info.noperm) |
1da177e4 | 2174 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; |
4523cc30 | 2175 | if (volume_info.setuids) |
1da177e4 | 2176 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; |
4523cc30 | 2177 | if (volume_info.server_ino) |
1da177e4 | 2178 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; |
4523cc30 | 2179 | if (volume_info.remap) |
6a0b4824 | 2180 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; |
4523cc30 | 2181 | if (volume_info.no_xattr) |
1da177e4 | 2182 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; |
4523cc30 | 2183 | if (volume_info.sfu_emul) |
d7245c2c | 2184 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; |
4523cc30 | 2185 | if (volume_info.nobrl) |
c46fa8ac | 2186 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; |
4523cc30 | 2187 | if (volume_info.cifs_acl) |
0a4b92c0 | 2188 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; |
4523cc30 SF |
2189 | if (volume_info.override_uid) |
2190 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; | |
2191 | if (volume_info.override_gid) | |
2192 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; | |
d0a9c078 JL |
2193 | if (volume_info.dynperm) |
2194 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM; | |
4523cc30 | 2195 | if (volume_info.direct_io) { |
467a8f8d | 2196 | cFYI(1, ("mounting share using direct i/o")); |
1da177e4 LT |
2197 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
2198 | } | |
2199 | ||
27adb44c SF |
2200 | if ((volume_info.cifs_acl) && (volume_info.dynperm)) |
2201 | cERROR(1, ("mount option dynperm ignored if cifsacl " | |
2202 | "mount option supported")); | |
2203 | ||
1da177e4 LT |
2204 | tcon = |
2205 | find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, | |
2206 | volume_info.username); | |
2207 | if (tcon) { | |
bf820679 | 2208 | cFYI(1, ("Found match on UNC path")); |
1da177e4 LT |
2209 | /* we can have only one retry value for a connection |
2210 | to a share so for resources mounted more than once | |
50c2f753 | 2211 | to the same server share the last value passed in |
1da177e4 LT |
2212 | for the retry flag is used */ |
2213 | tcon->retry = volume_info.retry; | |
d3485d37 | 2214 | tcon->nocase = volume_info.nocase; |
84210e91 | 2215 | tcon->local_lease = volume_info.local_lease; |
95b1cb90 SF |
2216 | if (tcon->seal != volume_info.seal) |
2217 | cERROR(1, ("transport encryption setting " | |
2218 | "conflicts with existing tid")); | |
1da177e4 LT |
2219 | } else { |
2220 | tcon = tconInfoAlloc(); | |
2221 | if (tcon == NULL) | |
2222 | rc = -ENOMEM; | |
2223 | else { | |
50c2f753 | 2224 | /* check for null share name ie connecting to |
8af18971 | 2225 | * dfs root */ |
1da177e4 | 2226 | |
50c2f753 | 2227 | /* BB check if this works for exactly length |
8af18971 | 2228 | * three strings */ |
1da177e4 LT |
2229 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) |
2230 | && (strchr(volume_info.UNC + 3, '/') == | |
2231 | NULL)) { | |
646dd539 | 2232 | /* rc = connect_to_dfs_path(xid, pSesInfo, |
8af18971 | 2233 | "", cifs_sb->local_nls, |
50c2f753 | 2234 | cifs_sb->mnt_cifs_flags & |
646dd539 SF |
2235 | CIFS_MOUNT_MAP_SPECIAL_CHR);*/ |
2236 | cFYI(1, ("DFS root not supported")); | |
70fe7dc0 JL |
2237 | rc = -ENODEV; |
2238 | goto out; | |
1da177e4 | 2239 | } else { |
8af18971 SF |
2240 | /* BB Do we need to wrap sesSem around |
2241 | * this TCon call and Unix SetFS as | |
2242 | * we do on SessSetup and reconnect? */ | |
50c2f753 | 2243 | rc = CIFSTCon(xid, pSesInfo, |
1da177e4 LT |
2244 | volume_info.UNC, |
2245 | tcon, cifs_sb->local_nls); | |
2246 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
2c1b8615 SF |
2247 | if (volume_info.nodfs) { |
2248 | tcon->Flags &= | |
2249 | ~SMB_SHARE_IS_IN_DFS; | |
2250 | cFYI(1, ("DFS disabled (%d)", | |
2251 | tcon->Flags)); | |
2252 | } | |
1da177e4 LT |
2253 | } |
2254 | if (!rc) { | |
2255 | atomic_inc(&pSesInfo->inUse); | |
2256 | tcon->retry = volume_info.retry; | |
d3485d37 | 2257 | tcon->nocase = volume_info.nocase; |
95b1cb90 | 2258 | tcon->seal = volume_info.seal; |
1da177e4 LT |
2259 | } |
2260 | } | |
2261 | } | |
2262 | } | |
4523cc30 | 2263 | if (pSesInfo) { |
1da177e4 LT |
2264 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
2265 | sb->s_maxbytes = (u64) 1 << 63; | |
2266 | } else | |
2267 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
2268 | } | |
2269 | ||
8af18971 | 2270 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
1da177e4 LT |
2271 | sb->s_time_gran = 100; |
2272 | ||
2273 | /* on error free sesinfo and tcon struct if needed */ | |
2274 | if (rc) { | |
2275 | /* if session setup failed, use count is zero but | |
2276 | we still need to free cifsd thread */ | |
4523cc30 | 2277 | if (atomic_read(&srvTcp->socketUseCount) == 0) { |
1da177e4 LT |
2278 | spin_lock(&GlobalMid_Lock); |
2279 | srvTcp->tcpStatus = CifsExiting; | |
2280 | spin_unlock(&GlobalMid_Lock); | |
b1c8d2b4 | 2281 | kill_cifsd(srvTcp); |
1da177e4 LT |
2282 | } |
2283 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
2284 | if (tcon) /* up accidently freeing someone elses tcon struct */ | |
2285 | tconInfoFree(tcon); | |
2286 | if (existingCifsSes == NULL) { | |
2287 | if (pSesInfo) { | |
50c2f753 | 2288 | if ((pSesInfo->server) && |
1da177e4 LT |
2289 | (pSesInfo->status == CifsGood)) { |
2290 | int temp_rc; | |
2291 | temp_rc = CIFSSMBLogoff(xid, pSesInfo); | |
2292 | /* if the socketUseCount is now zero */ | |
4523cc30 | 2293 | if ((temp_rc == -ESHUTDOWN) && |
b1c8d2b4 JL |
2294 | (pSesInfo->server)) |
2295 | kill_cifsd(pSesInfo->server); | |
a013689d | 2296 | } else { |
1da177e4 | 2297 | cFYI(1, ("No session or bad tcon")); |
b1c8d2b4 | 2298 | if (pSesInfo->server) { |
469ee614 JL |
2299 | spin_lock(&GlobalMid_Lock); |
2300 | srvTcp->tcpStatus = CifsExiting; | |
2301 | spin_unlock(&GlobalMid_Lock); | |
b1c8d2b4 | 2302 | kill_cifsd(pSesInfo->server); |
a013689d SF |
2303 | } |
2304 | } | |
1da177e4 LT |
2305 | sesInfoFree(pSesInfo); |
2306 | /* pSesInfo = NULL; */ | |
2307 | } | |
2308 | } | |
2309 | } else { | |
2310 | atomic_inc(&tcon->useCount); | |
2311 | cifs_sb->tcon = tcon; | |
2312 | tcon->ses = pSesInfo; | |
2313 | ||
82940a46 | 2314 | /* do not care if following two calls succeed - informational */ |
7f8ed420 SF |
2315 | if (!tcon->ipc) { |
2316 | CIFSSMBQFSDeviceInfo(xid, tcon); | |
2317 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
2318 | } | |
50c2f753 | 2319 | |
8af18971 SF |
2320 | /* tell server which Unix caps we support */ |
2321 | if (tcon->ses->capabilities & CAP_UNIX) | |
c18c842b SF |
2322 | /* reset of caps checks mount to see if unix extensions |
2323 | disabled for just this mount */ | |
8af18971 | 2324 | reset_cifs_unix_caps(xid, tcon, sb, &volume_info); |
c18c842b SF |
2325 | else |
2326 | tcon->unix_ext = 0; /* server does not support them */ | |
2327 | ||
03a143c9 | 2328 | /* convert forward to back slashes in prepath here if needed */ |
11b6d645 IM |
2329 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0) |
2330 | convert_delimiter(cifs_sb->prepath, | |
2331 | CIFS_DIR_SEP(cifs_sb)); | |
03a143c9 | 2332 | |
c18c842b | 2333 | if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) { |
75865f8c | 2334 | cifs_sb->rsize = 1024 * 127; |
90c81e0b SF |
2335 | cFYI(DBG2, |
2336 | ("no very large read support, rsize now 127K")); | |
75865f8c | 2337 | } |
3e84469d SF |
2338 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
2339 | cifs_sb->wsize = min(cifs_sb->wsize, | |
2340 | (tcon->ses->server->maxBuf - | |
2341 | MAX_CIFS_HDR_SIZE)); | |
0ae0efad | 2342 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
50c2f753 SF |
2343 | cifs_sb->rsize = min(cifs_sb->rsize, |
2344 | (tcon->ses->server->maxBuf - | |
2345 | MAX_CIFS_HDR_SIZE)); | |
1da177e4 LT |
2346 | } |
2347 | ||
2348 | /* volume_info.password is freed above when existing session found | |
2349 | (in which case it is not needed anymore) but when new sesion is created | |
2350 | the password ptr is put in the new session structure (in which case the | |
2351 | password will be freed at unmount time) */ | |
70fe7dc0 JL |
2352 | out: |
2353 | /* zero out password before freeing */ | |
2354 | if (volume_info.password != NULL) { | |
2355 | memset(volume_info.password, 0, strlen(volume_info.password)); | |
2356 | kfree(volume_info.password); | |
2357 | } | |
f99d49ad | 2358 | kfree(volume_info.UNC); |
2fe87f02 | 2359 | kfree(volume_info.prepath); |
1da177e4 LT |
2360 | FreeXid(xid); |
2361 | return rc; | |
2362 | } | |
2363 | ||
2364 | static int | |
2365 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 2366 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
2367 | const struct nls_table *nls_codepage) |
2368 | { | |
2369 | struct smb_hdr *smb_buffer; | |
2370 | struct smb_hdr *smb_buffer_response; | |
2371 | SESSION_SETUP_ANDX *pSMB; | |
2372 | SESSION_SETUP_ANDX *pSMBr; | |
2373 | char *bcc_ptr; | |
2374 | char *user; | |
2375 | char *domain; | |
2376 | int rc = 0; | |
2377 | int remaining_words = 0; | |
2378 | int bytes_returned = 0; | |
2379 | int len; | |
2380 | __u32 capabilities; | |
2381 | __u16 count; | |
2382 | ||
eeac8047 | 2383 | cFYI(1, ("In sesssetup")); |
4523cc30 | 2384 | if (ses == NULL) |
1da177e4 LT |
2385 | return -EINVAL; |
2386 | user = ses->userName; | |
2387 | domain = ses->domainName; | |
2388 | smb_buffer = cifs_buf_get(); | |
582d21e5 SF |
2389 | |
2390 | if (smb_buffer == NULL) | |
1da177e4 | 2391 | return -ENOMEM; |
582d21e5 | 2392 | |
1da177e4 LT |
2393 | smb_buffer_response = smb_buffer; |
2394 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2395 | ||
2396 | /* send SMBsessionSetup here */ | |
2397 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2398 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2399 | ||
1982c344 | 2400 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2401 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2402 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2403 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2404 | ||
50c2f753 SF |
2405 | if (ses->server->secMode & |
2406 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
2407 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2408 | ||
2409 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2410 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2411 | if (ses->capabilities & CAP_UNICODE) { | |
2412 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2413 | capabilities |= CAP_UNICODE; | |
2414 | } | |
2415 | if (ses->capabilities & CAP_STATUS32) { | |
2416 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2417 | capabilities |= CAP_STATUS32; | |
2418 | } | |
2419 | if (ses->capabilities & CAP_DFS) { | |
2420 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2421 | capabilities |= CAP_DFS; | |
2422 | } | |
2423 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2424 | ||
50c2f753 | 2425 | pSMB->req_no_secext.CaseInsensitivePasswordLength = |
7c7b25bc | 2426 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2427 | |
2428 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2429 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2430 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2431 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2432 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2433 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2434 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2435 | |
2436 | if (ses->capabilities & CAP_UNICODE) { | |
2437 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2438 | *bcc_ptr = 0; | |
2439 | bcc_ptr++; | |
2440 | } | |
4523cc30 | 2441 | if (user == NULL) |
3979877e | 2442 | bytes_returned = 0; /* skip null user */ |
50c2f753 | 2443 | else |
1da177e4 | 2444 | bytes_returned = |
50c2f753 | 2445 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2446 | nls_codepage); |
2447 | /* convert number of 16 bit words to bytes */ | |
2448 | bcc_ptr += 2 * bytes_returned; | |
2449 | bcc_ptr += 2; /* trailing null */ | |
2450 | if (domain == NULL) | |
2451 | bytes_returned = | |
e89dc920 | 2452 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2453 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2454 | else | |
2455 | bytes_returned = | |
e89dc920 | 2456 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2457 | nls_codepage); |
2458 | bcc_ptr += 2 * bytes_returned; | |
2459 | bcc_ptr += 2; | |
2460 | bytes_returned = | |
e89dc920 | 2461 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2462 | 32, nls_codepage); |
2463 | bcc_ptr += 2 * bytes_returned; | |
2464 | bytes_returned = | |
e9ff3990 | 2465 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, |
1da177e4 LT |
2466 | 32, nls_codepage); |
2467 | bcc_ptr += 2 * bytes_returned; | |
2468 | bcc_ptr += 2; | |
2469 | bytes_returned = | |
e89dc920 | 2470 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2471 | 64, nls_codepage); |
2472 | bcc_ptr += 2 * bytes_returned; | |
2473 | bcc_ptr += 2; | |
2474 | } else { | |
50c2f753 | 2475 | if (user != NULL) { |
1da177e4 LT |
2476 | strncpy(bcc_ptr, user, 200); |
2477 | bcc_ptr += strnlen(user, 200); | |
2478 | } | |
2479 | *bcc_ptr = 0; | |
2480 | bcc_ptr++; | |
2481 | if (domain == NULL) { | |
2482 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2483 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2484 | } else { | |
2485 | strncpy(bcc_ptr, domain, 64); | |
2486 | bcc_ptr += strnlen(domain, 64); | |
2487 | *bcc_ptr = 0; | |
2488 | bcc_ptr++; | |
2489 | } | |
2490 | strcpy(bcc_ptr, "Linux version "); | |
2491 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2492 | strcpy(bcc_ptr, utsname()->release); |
2493 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2494 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2495 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2496 | } | |
2497 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2498 | smb_buffer->smb_buf_length += count; | |
2499 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2500 | ||
2501 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2502 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2503 | if (rc) { |
2504 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2505 | } else if ((smb_buffer_response->WordCount == 3) | |
2506 | || (smb_buffer_response->WordCount == 4)) { | |
2507 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2508 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2509 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2510 | cFYI(1, (" Guest login")); /* BB mark SesInfo struct? */ |
2511 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format | |
2512 | (little endian) */ | |
1da177e4 | 2513 | cFYI(1, ("UID = %d ", ses->Suid)); |
50c2f753 SF |
2514 | /* response can have either 3 or 4 word count - Samba sends 3 */ |
2515 | bcc_ptr = pByteArea(smb_buffer_response); | |
1da177e4 LT |
2516 | if ((pSMBr->resp.hdr.WordCount == 3) |
2517 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2518 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2519 | if (pSMBr->resp.hdr.WordCount == 4) | |
2520 | bcc_ptr += blob_len; | |
2521 | ||
2522 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2523 | if ((long) (bcc_ptr) % 2) { | |
2524 | remaining_words = | |
50c2f753 SF |
2525 | (BCC(smb_buffer_response) - 1) / 2; |
2526 | /* Unicode strings must be word | |
2527 | aligned */ | |
2528 | bcc_ptr++; | |
1da177e4 LT |
2529 | } else { |
2530 | remaining_words = | |
2531 | BCC(smb_buffer_response) / 2; | |
2532 | } | |
2533 | len = | |
2534 | UniStrnlen((wchar_t *) bcc_ptr, | |
2535 | remaining_words - 1); | |
2536 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2537 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2538 | terminating last Unicode string in response */ | |
fb8c4b14 | 2539 | if (ses->serverOS) |
a424f8bf | 2540 | kfree(ses->serverOS); |
50c2f753 SF |
2541 | ses->serverOS = kzalloc(2 * (len + 1), |
2542 | GFP_KERNEL); | |
fb8c4b14 | 2543 | if (ses->serverOS == NULL) |
433dc24f | 2544 | goto sesssetup_nomem; |
1da177e4 | 2545 | cifs_strfromUCS_le(ses->serverOS, |
50c2f753 SF |
2546 | (__le16 *)bcc_ptr, |
2547 | len, nls_codepage); | |
1da177e4 LT |
2548 | bcc_ptr += 2 * (len + 1); |
2549 | remaining_words -= len + 1; | |
2550 | ses->serverOS[2 * len] = 0; | |
2551 | ses->serverOS[1 + (2 * len)] = 0; | |
2552 | if (remaining_words > 0) { | |
2553 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2554 | remaining_words-1); | |
cd49b492 | 2555 | kfree(ses->serverNOS); |
50c2f753 SF |
2556 | ses->serverNOS = kzalloc(2 * (len + 1), |
2557 | GFP_KERNEL); | |
fb8c4b14 | 2558 | if (ses->serverNOS == NULL) |
433dc24f | 2559 | goto sesssetup_nomem; |
1da177e4 | 2560 | cifs_strfromUCS_le(ses->serverNOS, |
50c2f753 SF |
2561 | (__le16 *)bcc_ptr, |
2562 | len, nls_codepage); | |
1da177e4 LT |
2563 | bcc_ptr += 2 * (len + 1); |
2564 | ses->serverNOS[2 * len] = 0; | |
2565 | ses->serverNOS[1 + (2 * len)] = 0; | |
fb8c4b14 | 2566 | if (strncmp(ses->serverNOS, |
50c2f753 | 2567 | "NT LAN Manager 4", 16) == 0) { |
467a8f8d | 2568 | cFYI(1, ("NT4 server")); |
1da177e4 LT |
2569 | ses->flags |= CIFS_SES_NT4; |
2570 | } | |
2571 | remaining_words -= len + 1; | |
2572 | if (remaining_words > 0) { | |
433dc24f | 2573 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
50c2f753 SF |
2574 | /* last string is not always null terminated |
2575 | (for e.g. for Windows XP & 2000) */ | |
fb8c4b14 | 2576 | if (ses->serverDomain) |
a424f8bf | 2577 | kfree(ses->serverDomain); |
1da177e4 | 2578 | ses->serverDomain = |
50c2f753 SF |
2579 | kzalloc(2*(len+1), |
2580 | GFP_KERNEL); | |
fb8c4b14 | 2581 | if (ses->serverDomain == NULL) |
433dc24f | 2582 | goto sesssetup_nomem; |
1da177e4 | 2583 | cifs_strfromUCS_le(ses->serverDomain, |
50c2f753 SF |
2584 | (__le16 *)bcc_ptr, |
2585 | len, nls_codepage); | |
1da177e4 LT |
2586 | bcc_ptr += 2 * (len + 1); |
2587 | ses->serverDomain[2*len] = 0; | |
2588 | ses->serverDomain[1+(2*len)] = 0; | |
50c2f753 SF |
2589 | } else { /* else no more room so create |
2590 | dummy domain string */ | |
fb8c4b14 | 2591 | if (ses->serverDomain) |
a424f8bf | 2592 | kfree(ses->serverDomain); |
50c2f753 | 2593 | ses->serverDomain = |
e915fc49 | 2594 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2595 | } |
50c2f753 SF |
2596 | } else { /* no room so create dummy domain |
2597 | and NOS string */ | |
2598 | ||
433dc24f SF |
2599 | /* if these kcallocs fail not much we |
2600 | can do, but better to not fail the | |
2601 | sesssetup itself */ | |
cd49b492 | 2602 | kfree(ses->serverDomain); |
1da177e4 | 2603 | ses->serverDomain = |
e915fc49 | 2604 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2605 | kfree(ses->serverNOS); |
1da177e4 | 2606 | ses->serverNOS = |
e915fc49 | 2607 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2608 | } |
2609 | } else { /* ASCII */ | |
2610 | len = strnlen(bcc_ptr, 1024); | |
2611 | if (((long) bcc_ptr + len) - (long) | |
2612 | pByteArea(smb_buffer_response) | |
2613 | <= BCC(smb_buffer_response)) { | |
cd49b492 | 2614 | kfree(ses->serverOS); |
50c2f753 SF |
2615 | ses->serverOS = kzalloc(len + 1, |
2616 | GFP_KERNEL); | |
fb8c4b14 | 2617 | if (ses->serverOS == NULL) |
433dc24f | 2618 | goto sesssetup_nomem; |
50c2f753 | 2619 | strncpy(ses->serverOS, bcc_ptr, len); |
1da177e4 LT |
2620 | |
2621 | bcc_ptr += len; | |
50c2f753 SF |
2622 | /* null terminate the string */ |
2623 | bcc_ptr[0] = 0; | |
1da177e4 LT |
2624 | bcc_ptr++; |
2625 | ||
2626 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2627 | kfree(ses->serverNOS); |
50c2f753 SF |
2628 | ses->serverNOS = kzalloc(len + 1, |
2629 | GFP_KERNEL); | |
fb8c4b14 | 2630 | if (ses->serverNOS == NULL) |
433dc24f | 2631 | goto sesssetup_nomem; |
1da177e4 LT |
2632 | strncpy(ses->serverNOS, bcc_ptr, len); |
2633 | bcc_ptr += len; | |
2634 | bcc_ptr[0] = 0; | |
2635 | bcc_ptr++; | |
2636 | ||
2637 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 2638 | if (ses->serverDomain) |
a424f8bf | 2639 | kfree(ses->serverDomain); |
50c2f753 SF |
2640 | ses->serverDomain = kzalloc(len + 1, |
2641 | GFP_KERNEL); | |
fb8c4b14 | 2642 | if (ses->serverDomain == NULL) |
433dc24f | 2643 | goto sesssetup_nomem; |
50c2f753 SF |
2644 | strncpy(ses->serverDomain, bcc_ptr, |
2645 | len); | |
1da177e4 LT |
2646 | bcc_ptr += len; |
2647 | bcc_ptr[0] = 0; | |
2648 | bcc_ptr++; | |
2649 | } else | |
2650 | cFYI(1, | |
50c2f753 SF |
2651 | ("Variable field of length %d " |
2652 | "extends beyond end of smb ", | |
1da177e4 LT |
2653 | len)); |
2654 | } | |
2655 | } else { | |
2656 | cERROR(1, | |
50c2f753 SF |
2657 | (" Security Blob Length extends beyond " |
2658 | "end of SMB")); | |
1da177e4 LT |
2659 | } |
2660 | } else { | |
2661 | cERROR(1, | |
2662 | (" Invalid Word count %d: ", | |
2663 | smb_buffer_response->WordCount)); | |
2664 | rc = -EIO; | |
2665 | } | |
433dc24f SF |
2666 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2667 | since that could make reconnection harder, and | |
2668 | reconnection might be needed to free memory */ | |
a8a11d39 | 2669 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2670 | |
2671 | return rc; | |
2672 | } | |
2673 | ||
1da177e4 LT |
2674 | static int |
2675 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
4b18f2a9 | 2676 | struct cifsSesInfo *ses, bool *pNTLMv2_flag, |
1da177e4 LT |
2677 | const struct nls_table *nls_codepage) |
2678 | { | |
2679 | struct smb_hdr *smb_buffer; | |
2680 | struct smb_hdr *smb_buffer_response; | |
2681 | SESSION_SETUP_ANDX *pSMB; | |
2682 | SESSION_SETUP_ANDX *pSMBr; | |
2683 | char *bcc_ptr; | |
2684 | char *domain; | |
2685 | int rc = 0; | |
2686 | int remaining_words = 0; | |
2687 | int bytes_returned = 0; | |
2688 | int len; | |
6345a3a8 | 2689 | int SecurityBlobLength = sizeof(NEGOTIATE_MESSAGE); |
1da177e4 LT |
2690 | PNEGOTIATE_MESSAGE SecurityBlob; |
2691 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2692 | __u32 negotiate_flags, capabilities; | |
2693 | __u16 count; | |
2694 | ||
12b3b8ff | 2695 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
fb8c4b14 | 2696 | if (ses == NULL) |
1da177e4 LT |
2697 | return -EINVAL; |
2698 | domain = ses->domainName; | |
4b18f2a9 | 2699 | *pNTLMv2_flag = false; |
1da177e4 LT |
2700 | smb_buffer = cifs_buf_get(); |
2701 | if (smb_buffer == NULL) { | |
2702 | return -ENOMEM; | |
2703 | } | |
2704 | smb_buffer_response = smb_buffer; | |
2705 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2706 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2707 | ||
2708 | /* send SMBsessionSetup here */ | |
2709 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2710 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2711 | |
2712 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2713 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2714 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2715 | ||
2716 | pSMB->req.AndXCommand = 0xFF; | |
2717 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2718 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2719 | ||
fb8c4b14 | 2720 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2721 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2722 | ||
2723 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2724 | CAP_EXTENDED_SECURITY; | |
2725 | if (ses->capabilities & CAP_UNICODE) { | |
2726 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2727 | capabilities |= CAP_UNICODE; | |
2728 | } | |
2729 | if (ses->capabilities & CAP_STATUS32) { | |
2730 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2731 | capabilities |= CAP_STATUS32; | |
2732 | } | |
2733 | if (ses->capabilities & CAP_DFS) { | |
2734 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2735 | capabilities |= CAP_DFS; | |
2736 | } | |
2737 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2738 | ||
2739 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2740 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2741 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2742 | SecurityBlob->MessageType = NtLmNegotiate; | |
2743 | negotiate_flags = | |
2744 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2745 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2746 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 | 2747 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
fb8c4b14 | 2748 | if (sign_CIFS_PDUs) |
1da177e4 | 2749 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 2750 | /* if (ntlmv2_support) |
3979877e | 2751 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ |
1da177e4 LT |
2752 | /* setup pointers to domain name and workstation name */ |
2753 | bcc_ptr += SecurityBlobLength; | |
2754 | ||
2755 | SecurityBlob->WorkstationName.Buffer = 0; | |
2756 | SecurityBlob->WorkstationName.Length = 0; | |
2757 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2758 | ||
12b3b8ff SF |
2759 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2760 | along with username on auth request (ie the response to challenge) */ | |
2761 | SecurityBlob->DomainName.Buffer = 0; | |
2762 | SecurityBlob->DomainName.Length = 0; | |
2763 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2764 | if (ses->capabilities & CAP_UNICODE) { |
2765 | if ((long) bcc_ptr % 2) { | |
2766 | *bcc_ptr = 0; | |
2767 | bcc_ptr++; | |
2768 | } | |
2769 | ||
2770 | bytes_returned = | |
e89dc920 | 2771 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2772 | 32, nls_codepage); |
2773 | bcc_ptr += 2 * bytes_returned; | |
2774 | bytes_returned = | |
e9ff3990 | 2775 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2776 | nls_codepage); |
2777 | bcc_ptr += 2 * bytes_returned; | |
2778 | bcc_ptr += 2; /* null terminate Linux version */ | |
2779 | bytes_returned = | |
e89dc920 | 2780 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2781 | 64, nls_codepage); |
2782 | bcc_ptr += 2 * bytes_returned; | |
2783 | *(bcc_ptr + 1) = 0; | |
2784 | *(bcc_ptr + 2) = 0; | |
2785 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2786 | *(bcc_ptr + 1) = 0; | |
2787 | *(bcc_ptr + 2) = 0; | |
2788 | bcc_ptr += 2; /* null domain */ | |
2789 | } else { /* ASCII */ | |
2790 | strcpy(bcc_ptr, "Linux version "); | |
2791 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2792 | strcpy(bcc_ptr, utsname()->release); |
2793 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2794 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2795 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2796 | bcc_ptr++; /* empty domain field */ | |
2797 | *bcc_ptr = 0; | |
2798 | } | |
2799 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2800 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2801 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2802 | smb_buffer->smb_buf_length += count; | |
2803 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2804 | ||
2805 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2806 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2807 | |
2808 | if (smb_buffer_response->Status.CifsError == | |
2809 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2810 | rc = 0; | |
2811 | ||
2812 | if (rc) { | |
2813 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2814 | } else if ((smb_buffer_response->WordCount == 3) | |
2815 | || (smb_buffer_response->WordCount == 4)) { | |
2816 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2817 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2818 | ||
2819 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2820 | cFYI(1, (" Guest login")); |
2821 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
1da177e4 | 2822 | |
50c2f753 SF |
2823 | bcc_ptr = pByteArea(smb_buffer_response); |
2824 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
2825 | |
2826 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2827 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2828 | cFYI(1, | |
2829 | ("Unexpected NTLMSSP message type received %d", | |
2830 | SecurityBlob2->MessageType)); | |
2831 | } else if (ses) { | |
50c2f753 | 2832 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ |
12b3b8ff | 2833 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2834 | if ((pSMBr->resp.hdr.WordCount == 3) |
2835 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2836 | && (blob_len < | |
2837 | pSMBr->resp.ByteCount))) { | |
2838 | ||
2839 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2840 | bcc_ptr += blob_len; | |
12b3b8ff | 2841 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2842 | blob_len)); |
2843 | } | |
2844 | ||
12b3b8ff | 2845 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2846 | |
2847 | memcpy(ses->server->cryptKey, | |
2848 | SecurityBlob2->Challenge, | |
2849 | CIFS_CRYPTO_KEY_SIZE); | |
50c2f753 | 2850 | if (SecurityBlob2->NegotiateFlags & |
12b3b8ff | 2851 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) |
4b18f2a9 | 2852 | *pNTLMv2_flag = true; |
1da177e4 | 2853 | |
50c2f753 SF |
2854 | if ((SecurityBlob2->NegotiateFlags & |
2855 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
1da177e4 | 2856 | || (sign_CIFS_PDUs > 1)) |
50c2f753 SF |
2857 | ses->server->secMode |= |
2858 | SECMODE_SIGN_REQUIRED; | |
2859 | if ((SecurityBlob2->NegotiateFlags & | |
1da177e4 | 2860 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) |
50c2f753 | 2861 | ses->server->secMode |= |
1da177e4 LT |
2862 | SECMODE_SIGN_ENABLED; |
2863 | ||
2864 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2865 | if ((long) (bcc_ptr) % 2) { | |
2866 | remaining_words = | |
2867 | (BCC(smb_buffer_response) | |
2868 | - 1) / 2; | |
50c2f753 SF |
2869 | /* Must word align unicode strings */ |
2870 | bcc_ptr++; | |
1da177e4 LT |
2871 | } else { |
2872 | remaining_words = | |
2873 | BCC | |
2874 | (smb_buffer_response) / 2; | |
2875 | } | |
2876 | len = | |
2877 | UniStrnlen((wchar_t *) bcc_ptr, | |
2878 | remaining_words - 1); | |
2879 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2880 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2881 | terminating last Unicode string in response */ | |
fb8c4b14 | 2882 | if (ses->serverOS) |
a424f8bf | 2883 | kfree(ses->serverOS); |
1da177e4 | 2884 | ses->serverOS = |
e915fc49 | 2885 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2886 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2887 | (__le16 *) |
1da177e4 LT |
2888 | bcc_ptr, len, |
2889 | nls_codepage); | |
2890 | bcc_ptr += 2 * (len + 1); | |
2891 | remaining_words -= len + 1; | |
2892 | ses->serverOS[2 * len] = 0; | |
2893 | ses->serverOS[1 + (2 * len)] = 0; | |
2894 | if (remaining_words > 0) { | |
2895 | len = UniStrnlen((wchar_t *) | |
2896 | bcc_ptr, | |
2897 | remaining_words | |
2898 | - 1); | |
cd49b492 | 2899 | kfree(ses->serverNOS); |
1da177e4 | 2900 | ses->serverNOS = |
e915fc49 | 2901 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2902 | GFP_KERNEL); |
2903 | cifs_strfromUCS_le(ses-> | |
2904 | serverNOS, | |
e89dc920 | 2905 | (__le16 *) |
1da177e4 LT |
2906 | bcc_ptr, |
2907 | len, | |
2908 | nls_codepage); | |
2909 | bcc_ptr += 2 * (len + 1); | |
2910 | ses->serverNOS[2 * len] = 0; | |
2911 | ses->serverNOS[1 + | |
2912 | (2 * len)] = 0; | |
2913 | remaining_words -= len + 1; | |
2914 | if (remaining_words > 0) { | |
50c2f753 SF |
2915 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
2916 | /* last string not always null terminated | |
2917 | (for e.g. for Windows XP & 2000) */ | |
cd49b492 | 2918 | kfree(ses->serverDomain); |
1da177e4 | 2919 | ses->serverDomain = |
e915fc49 | 2920 | kzalloc(2 * |
1da177e4 LT |
2921 | (len + |
2922 | 1), | |
2923 | GFP_KERNEL); | |
2924 | cifs_strfromUCS_le | |
e89dc920 SF |
2925 | (ses->serverDomain, |
2926 | (__le16 *)bcc_ptr, | |
2927 | len, nls_codepage); | |
1da177e4 LT |
2928 | bcc_ptr += |
2929 | 2 * (len + 1); | |
e89dc920 | 2930 | ses->serverDomain[2*len] |
1da177e4 | 2931 | = 0; |
e89dc920 SF |
2932 | ses->serverDomain |
2933 | [1 + (2 * len)] | |
1da177e4 LT |
2934 | = 0; |
2935 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 2936 | else { |
cd49b492 | 2937 | kfree(ses->serverDomain); |
1da177e4 | 2938 | ses->serverDomain = |
e915fc49 | 2939 | kzalloc(2, |
1da177e4 | 2940 | GFP_KERNEL); |
a424f8bf | 2941 | } |
1da177e4 | 2942 | } else { /* no room so create dummy domain and NOS string */ |
cd49b492 | 2943 | kfree(ses->serverDomain); |
1da177e4 | 2944 | ses->serverDomain = |
e915fc49 | 2945 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2946 | kfree(ses->serverNOS); |
1da177e4 | 2947 | ses->serverNOS = |
e915fc49 | 2948 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2949 | } |
2950 | } else { /* ASCII */ | |
2951 | len = strnlen(bcc_ptr, 1024); | |
2952 | if (((long) bcc_ptr + len) - (long) | |
2953 | pByteArea(smb_buffer_response) | |
2954 | <= BCC(smb_buffer_response)) { | |
fb8c4b14 | 2955 | if (ses->serverOS) |
a424f8bf | 2956 | kfree(ses->serverOS); |
1da177e4 | 2957 | ses->serverOS = |
e915fc49 | 2958 | kzalloc(len + 1, |
1da177e4 LT |
2959 | GFP_KERNEL); |
2960 | strncpy(ses->serverOS, | |
2961 | bcc_ptr, len); | |
2962 | ||
2963 | bcc_ptr += len; | |
2964 | bcc_ptr[0] = 0; /* null terminate string */ | |
2965 | bcc_ptr++; | |
2966 | ||
2967 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2968 | kfree(ses->serverNOS); |
1da177e4 | 2969 | ses->serverNOS = |
e915fc49 | 2970 | kzalloc(len + 1, |
1da177e4 LT |
2971 | GFP_KERNEL); |
2972 | strncpy(ses->serverNOS, bcc_ptr, len); | |
2973 | bcc_ptr += len; | |
2974 | bcc_ptr[0] = 0; | |
2975 | bcc_ptr++; | |
2976 | ||
2977 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2978 | kfree(ses->serverDomain); |
1da177e4 | 2979 | ses->serverDomain = |
e915fc49 | 2980 | kzalloc(len + 1, |
1da177e4 | 2981 | GFP_KERNEL); |
50c2f753 SF |
2982 | strncpy(ses->serverDomain, |
2983 | bcc_ptr, len); | |
1da177e4 LT |
2984 | bcc_ptr += len; |
2985 | bcc_ptr[0] = 0; | |
2986 | bcc_ptr++; | |
2987 | } else | |
2988 | cFYI(1, | |
63135e08 SF |
2989 | ("field of length %d " |
2990 | "extends beyond end of smb", | |
1da177e4 LT |
2991 | len)); |
2992 | } | |
2993 | } else { | |
50c2f753 SF |
2994 | cERROR(1, ("Security Blob Length extends beyond" |
2995 | " end of SMB")); | |
1da177e4 LT |
2996 | } |
2997 | } else { | |
2998 | cERROR(1, ("No session structure passed in.")); | |
2999 | } | |
3000 | } else { | |
3001 | cERROR(1, | |
5815449d | 3002 | (" Invalid Word count %d:", |
1da177e4 LT |
3003 | smb_buffer_response->WordCount)); |
3004 | rc = -EIO; | |
3005 | } | |
3006 | ||
a8a11d39 | 3007 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3008 | |
3009 | return rc; | |
3010 | } | |
3011 | static int | |
3012 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
4b18f2a9 | 3013 | char *ntlm_session_key, bool ntlmv2_flag, |
6345a3a8 | 3014 | const struct nls_table *nls_codepage) |
1da177e4 LT |
3015 | { |
3016 | struct smb_hdr *smb_buffer; | |
3017 | struct smb_hdr *smb_buffer_response; | |
3018 | SESSION_SETUP_ANDX *pSMB; | |
3019 | SESSION_SETUP_ANDX *pSMBr; | |
3020 | char *bcc_ptr; | |
3021 | char *user; | |
3022 | char *domain; | |
3023 | int rc = 0; | |
3024 | int remaining_words = 0; | |
3025 | int bytes_returned = 0; | |
3026 | int len; | |
6345a3a8 | 3027 | int SecurityBlobLength = sizeof(AUTHENTICATE_MESSAGE); |
1da177e4 LT |
3028 | PAUTHENTICATE_MESSAGE SecurityBlob; |
3029 | __u32 negotiate_flags, capabilities; | |
3030 | __u16 count; | |
3031 | ||
3032 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
fb8c4b14 | 3033 | if (ses == NULL) |
1da177e4 LT |
3034 | return -EINVAL; |
3035 | user = ses->userName; | |
3036 | domain = ses->domainName; | |
3037 | smb_buffer = cifs_buf_get(); | |
3038 | if (smb_buffer == NULL) { | |
3039 | return -ENOMEM; | |
3040 | } | |
3041 | smb_buffer_response = smb_buffer; | |
6345a3a8 CG |
3042 | pSMB = (SESSION_SETUP_ANDX *)smb_buffer; |
3043 | pSMBr = (SESSION_SETUP_ANDX *)smb_buffer_response; | |
1da177e4 LT |
3044 | |
3045 | /* send SMBsessionSetup here */ | |
3046 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
3047 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
3048 | |
3049 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3050 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
3051 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
3052 | pSMB->req.AndXCommand = 0xFF; | |
3053 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
3054 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
3055 | ||
3056 | pSMB->req.hdr.Uid = ses->Suid; | |
3057 | ||
fb8c4b14 | 3058 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3059 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3060 | ||
3061 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
6345a3a8 | 3062 | CAP_EXTENDED_SECURITY; |
1da177e4 LT |
3063 | if (ses->capabilities & CAP_UNICODE) { |
3064 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3065 | capabilities |= CAP_UNICODE; | |
3066 | } | |
3067 | if (ses->capabilities & CAP_STATUS32) { | |
3068 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3069 | capabilities |= CAP_STATUS32; | |
3070 | } | |
3071 | if (ses->capabilities & CAP_DFS) { | |
3072 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3073 | capabilities |= CAP_DFS; | |
3074 | } | |
3075 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
3076 | ||
6345a3a8 CG |
3077 | bcc_ptr = (char *)&pSMB->req.SecurityBlob; |
3078 | SecurityBlob = (PAUTHENTICATE_MESSAGE)bcc_ptr; | |
1da177e4 LT |
3079 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); |
3080 | SecurityBlob->MessageType = NtLmAuthenticate; | |
3081 | bcc_ptr += SecurityBlobLength; | |
6345a3a8 CG |
3082 | negotiate_flags = NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | |
3083 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
3084 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
fb8c4b14 | 3085 | if (sign_CIFS_PDUs) |
1da177e4 | 3086 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 3087 | if (ntlmv2_flag) |
1da177e4 LT |
3088 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; |
3089 | ||
3090 | /* setup pointers to domain name and workstation name */ | |
3091 | ||
3092 | SecurityBlob->WorkstationName.Buffer = 0; | |
3093 | SecurityBlob->WorkstationName.Length = 0; | |
3094 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
3095 | SecurityBlob->SessionKey.Length = 0; | |
3096 | SecurityBlob->SessionKey.MaximumLength = 0; | |
3097 | SecurityBlob->SessionKey.Buffer = 0; | |
3098 | ||
3099 | SecurityBlob->LmChallengeResponse.Length = 0; | |
3100 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
3101 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
3102 | ||
3103 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 3104 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 3105 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
3106 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
3107 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
3108 | SecurityBlob->NtChallengeResponse.Buffer = |
3109 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
3110 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
3111 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
3112 | |
3113 | if (ses->capabilities & CAP_UNICODE) { | |
3114 | if (domain == NULL) { | |
3115 | SecurityBlob->DomainName.Buffer = 0; | |
3116 | SecurityBlob->DomainName.Length = 0; | |
3117 | SecurityBlob->DomainName.MaximumLength = 0; | |
3118 | } else { | |
77159b4d | 3119 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 | 3120 | nls_codepage); |
77159b4d | 3121 | ln *= 2; |
1da177e4 | 3122 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3123 | cpu_to_le16(ln); |
1da177e4 LT |
3124 | SecurityBlob->DomainName.Buffer = |
3125 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3126 | bcc_ptr += ln; |
3127 | SecurityBlobLength += ln; | |
3128 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3129 | } |
3130 | if (user == NULL) { | |
3131 | SecurityBlob->UserName.Buffer = 0; | |
3132 | SecurityBlob->UserName.Length = 0; | |
3133 | SecurityBlob->UserName.MaximumLength = 0; | |
3134 | } else { | |
77159b4d | 3135 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 | 3136 | nls_codepage); |
77159b4d | 3137 | ln *= 2; |
1da177e4 | 3138 | SecurityBlob->UserName.MaximumLength = |
77159b4d | 3139 | cpu_to_le16(ln); |
1da177e4 LT |
3140 | SecurityBlob->UserName.Buffer = |
3141 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3142 | bcc_ptr += ln; |
3143 | SecurityBlobLength += ln; | |
3144 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3145 | } |
3146 | ||
63135e08 SF |
3147 | /* SecurityBlob->WorkstationName.Length = |
3148 | cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); | |
1da177e4 | 3149 | SecurityBlob->WorkstationName.Length *= 2; |
63135e08 SF |
3150 | SecurityBlob->WorkstationName.MaximumLength = |
3151 | cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
3152 | SecurityBlob->WorkstationName.Buffer = | |
3153 | cpu_to_le32(SecurityBlobLength); | |
1da177e4 LT |
3154 | bcc_ptr += SecurityBlob->WorkstationName.Length; |
3155 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
63135e08 SF |
3156 | SecurityBlob->WorkstationName.Length = |
3157 | cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
1da177e4 LT |
3158 | |
3159 | if ((long) bcc_ptr % 2) { | |
3160 | *bcc_ptr = 0; | |
3161 | bcc_ptr++; | |
3162 | } | |
3163 | bytes_returned = | |
e89dc920 | 3164 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
3165 | 32, nls_codepage); |
3166 | bcc_ptr += 2 * bytes_returned; | |
3167 | bytes_returned = | |
e9ff3990 | 3168 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
3169 | nls_codepage); |
3170 | bcc_ptr += 2 * bytes_returned; | |
3171 | bcc_ptr += 2; /* null term version string */ | |
3172 | bytes_returned = | |
e89dc920 | 3173 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
3174 | 64, nls_codepage); |
3175 | bcc_ptr += 2 * bytes_returned; | |
3176 | *(bcc_ptr + 1) = 0; | |
3177 | *(bcc_ptr + 2) = 0; | |
3178 | bcc_ptr += 2; /* null terminate network opsys string */ | |
3179 | *(bcc_ptr + 1) = 0; | |
3180 | *(bcc_ptr + 2) = 0; | |
3181 | bcc_ptr += 2; /* null domain */ | |
3182 | } else { /* ASCII */ | |
3183 | if (domain == NULL) { | |
3184 | SecurityBlob->DomainName.Buffer = 0; | |
3185 | SecurityBlob->DomainName.Length = 0; | |
3186 | SecurityBlob->DomainName.MaximumLength = 0; | |
3187 | } else { | |
77159b4d | 3188 | __u16 ln; |
1da177e4 LT |
3189 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; |
3190 | strncpy(bcc_ptr, domain, 63); | |
77159b4d | 3191 | ln = strnlen(domain, 64); |
1da177e4 | 3192 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3193 | cpu_to_le16(ln); |
1da177e4 LT |
3194 | SecurityBlob->DomainName.Buffer = |
3195 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3196 | bcc_ptr += ln; |
3197 | SecurityBlobLength += ln; | |
3198 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3199 | } |
3200 | if (user == NULL) { | |
3201 | SecurityBlob->UserName.Buffer = 0; | |
3202 | SecurityBlob->UserName.Length = 0; | |
3203 | SecurityBlob->UserName.MaximumLength = 0; | |
3204 | } else { | |
77159b4d | 3205 | __u16 ln; |
1da177e4 | 3206 | strncpy(bcc_ptr, user, 63); |
77159b4d SF |
3207 | ln = strnlen(user, 64); |
3208 | SecurityBlob->UserName.MaximumLength = cpu_to_le16(ln); | |
1da177e4 | 3209 | SecurityBlob->UserName.Buffer = |
77159b4d SF |
3210 | cpu_to_le32(SecurityBlobLength); |
3211 | bcc_ptr += ln; | |
3212 | SecurityBlobLength += ln; | |
3213 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3214 | } |
3215 | /* BB fill in our workstation name if known BB */ | |
3216 | ||
3217 | strcpy(bcc_ptr, "Linux version "); | |
3218 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
3219 | strcpy(bcc_ptr, utsname()->release); |
3220 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
3221 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
3222 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
3223 | bcc_ptr++; /* null domain */ | |
3224 | *bcc_ptr = 0; | |
3225 | } | |
3226 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
3227 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
3228 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
3229 | smb_buffer->smb_buf_length += count; | |
3230 | pSMB->req.ByteCount = cpu_to_le16(count); | |
3231 | ||
3232 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 3233 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 | 3234 | if (rc) { |
6345a3a8 CG |
3235 | /* rc = map_smb_to_linux_error(smb_buffer_response) done in SendReceive now */ |
3236 | } else if ((smb_buffer_response->WordCount == 3) || | |
3237 | (smb_buffer_response->WordCount == 4)) { | |
1da177e4 | 3238 | __u16 action = le16_to_cpu(pSMBr->resp.Action); |
6345a3a8 | 3239 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); |
1da177e4 | 3240 | if (action & GUEST_LOGIN) |
50c2f753 SF |
3241 | cFYI(1, (" Guest login")); /* BB Should we set anything |
3242 | in SesInfo struct ? */ | |
3243 | /* if (SecurityBlob2->MessageType != NtLm??) { | |
3244 | cFYI("Unexpected message type on auth response is %d")); | |
3245 | } */ | |
3246 | ||
1da177e4 LT |
3247 | if (ses) { |
3248 | cFYI(1, | |
50c2f753 | 3249 | ("Check challenge UID %d vs auth response UID %d", |
1da177e4 | 3250 | ses->Suid, smb_buffer_response->Uid)); |
50c2f753 SF |
3251 | /* UID left in wire format */ |
3252 | ses->Suid = smb_buffer_response->Uid; | |
3253 | bcc_ptr = pByteArea(smb_buffer_response); | |
3254 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
3255 | if ((pSMBr->resp.hdr.WordCount == 3) |
3256 | || ((pSMBr->resp.hdr.WordCount == 4) | |
3257 | && (blob_len < | |
3258 | pSMBr->resp.ByteCount))) { | |
3259 | if (pSMBr->resp.hdr.WordCount == 4) { | |
3260 | bcc_ptr += | |
3261 | blob_len; | |
3262 | cFYI(1, | |
3263 | ("Security Blob Length %d ", | |
3264 | blob_len)); | |
3265 | } | |
3266 | ||
3267 | cFYI(1, | |
3268 | ("NTLMSSP response to Authenticate ")); | |
3269 | ||
3270 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3271 | if ((long) (bcc_ptr) % 2) { | |
3272 | remaining_words = | |
3273 | (BCC(smb_buffer_response) | |
3274 | - 1) / 2; | |
3275 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
3276 | } else { | |
3277 | remaining_words = BCC(smb_buffer_response) / 2; | |
3278 | } | |
77159b4d SF |
3279 | len = UniStrnlen((wchar_t *) bcc_ptr, |
3280 | remaining_words - 1); | |
1da177e4 LT |
3281 | /* We look for obvious messed up bcc or strings in response so we do not go off |
3282 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
3283 | terminating last Unicode string in response */ | |
fb8c4b14 | 3284 | if (ses->serverOS) |
08775834 | 3285 | kfree(ses->serverOS); |
1da177e4 | 3286 | ses->serverOS = |
e915fc49 | 3287 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 3288 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 3289 | (__le16 *) |
1da177e4 LT |
3290 | bcc_ptr, len, |
3291 | nls_codepage); | |
3292 | bcc_ptr += 2 * (len + 1); | |
3293 | remaining_words -= len + 1; | |
3294 | ses->serverOS[2 * len] = 0; | |
3295 | ses->serverOS[1 + (2 * len)] = 0; | |
3296 | if (remaining_words > 0) { | |
3297 | len = UniStrnlen((wchar_t *) | |
3298 | bcc_ptr, | |
3299 | remaining_words | |
3300 | - 1); | |
cd49b492 | 3301 | kfree(ses->serverNOS); |
1da177e4 | 3302 | ses->serverNOS = |
e915fc49 | 3303 | kzalloc(2 * (len + 1), |
1da177e4 LT |
3304 | GFP_KERNEL); |
3305 | cifs_strfromUCS_le(ses-> | |
3306 | serverNOS, | |
e89dc920 | 3307 | (__le16 *) |
1da177e4 LT |
3308 | bcc_ptr, |
3309 | len, | |
3310 | nls_codepage); | |
3311 | bcc_ptr += 2 * (len + 1); | |
3312 | ses->serverNOS[2 * len] = 0; | |
3313 | ses->serverNOS[1+(2*len)] = 0; | |
3314 | remaining_words -= len + 1; | |
3315 | if (remaining_words > 0) { | |
50c2f753 | 3316 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 3317 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ |
fb8c4b14 | 3318 | if (ses->serverDomain) |
a424f8bf | 3319 | kfree(ses->serverDomain); |
1da177e4 | 3320 | ses->serverDomain = |
e915fc49 | 3321 | kzalloc(2 * |
1da177e4 LT |
3322 | (len + |
3323 | 1), | |
3324 | GFP_KERNEL); | |
3325 | cifs_strfromUCS_le | |
3326 | (ses-> | |
3327 | serverDomain, | |
e89dc920 | 3328 | (__le16 *) |
1da177e4 LT |
3329 | bcc_ptr, len, |
3330 | nls_codepage); | |
3331 | bcc_ptr += | |
3332 | 2 * (len + 1); | |
3333 | ses-> | |
3334 | serverDomain[2 | |
3335 | * len] | |
3336 | = 0; | |
3337 | ses-> | |
3338 | serverDomain[1 | |
3339 | + | |
3340 | (2 | |
3341 | * | |
3342 | len)] | |
3343 | = 0; | |
3344 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 3345 | else { |
fb8c4b14 | 3346 | if (ses->serverDomain) |
a424f8bf | 3347 | kfree(ses->serverDomain); |
e915fc49 | 3348 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 3349 | } |
1da177e4 | 3350 | } else { /* no room so create dummy domain and NOS string */ |
fb8c4b14 | 3351 | if (ses->serverDomain) |
a424f8bf | 3352 | kfree(ses->serverDomain); |
e915fc49 | 3353 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 3354 | kfree(ses->serverNOS); |
e915fc49 | 3355 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3356 | } |
3357 | } else { /* ASCII */ | |
3358 | len = strnlen(bcc_ptr, 1024); | |
50c2f753 SF |
3359 | if (((long) bcc_ptr + len) - |
3360 | (long) pByteArea(smb_buffer_response) | |
63135e08 | 3361 | <= BCC(smb_buffer_response)) { |
fb8c4b14 | 3362 | if (ses->serverOS) |
a424f8bf | 3363 | kfree(ses->serverOS); |
77159b4d | 3364 | ses->serverOS = kzalloc(len + 1, GFP_KERNEL); |
1da177e4 LT |
3365 | strncpy(ses->serverOS,bcc_ptr, len); |
3366 | ||
3367 | bcc_ptr += len; | |
3368 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3369 | bcc_ptr++; | |
3370 | ||
3371 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3372 | kfree(ses->serverNOS); |
50c2f753 SF |
3373 | ses->serverNOS = kzalloc(len+1, |
3374 | GFP_KERNEL); | |
63135e08 SF |
3375 | strncpy(ses->serverNOS, |
3376 | bcc_ptr, len); | |
1da177e4 LT |
3377 | bcc_ptr += len; |
3378 | bcc_ptr[0] = 0; | |
3379 | bcc_ptr++; | |
3380 | ||
3381 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 3382 | if (ses->serverDomain) |
a424f8bf | 3383 | kfree(ses->serverDomain); |
63135e08 SF |
3384 | ses->serverDomain = |
3385 | kzalloc(len+1, | |
3386 | GFP_KERNEL); | |
3387 | strncpy(ses->serverDomain, | |
3388 | bcc_ptr, len); | |
1da177e4 LT |
3389 | bcc_ptr += len; |
3390 | bcc_ptr[0] = 0; | |
3391 | bcc_ptr++; | |
3392 | } else | |
6345a3a8 | 3393 | cFYI(1, ("field of length %d " |
63135e08 | 3394 | "extends beyond end of smb ", |
1da177e4 LT |
3395 | len)); |
3396 | } | |
3397 | } else { | |
6345a3a8 | 3398 | cERROR(1, ("Security Blob extends beyond end " |
63135e08 | 3399 | "of SMB")); |
1da177e4 LT |
3400 | } |
3401 | } else { | |
3402 | cERROR(1, ("No session structure passed in.")); | |
3403 | } | |
3404 | } else { | |
6345a3a8 | 3405 | cERROR(1, ("Invalid Word count %d: ", |
1da177e4 LT |
3406 | smb_buffer_response->WordCount)); |
3407 | rc = -EIO; | |
3408 | } | |
3409 | ||
a8a11d39 | 3410 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3411 | |
3412 | return rc; | |
3413 | } | |
3414 | ||
3415 | int | |
3416 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3417 | const char *tree, struct cifsTconInfo *tcon, | |
3418 | const struct nls_table *nls_codepage) | |
3419 | { | |
3420 | struct smb_hdr *smb_buffer; | |
3421 | struct smb_hdr *smb_buffer_response; | |
3422 | TCONX_REQ *pSMB; | |
3423 | TCONX_RSP *pSMBr; | |
3424 | unsigned char *bcc_ptr; | |
3425 | int rc = 0; | |
3426 | int length; | |
3427 | __u16 count; | |
3428 | ||
3429 | if (ses == NULL) | |
3430 | return -EIO; | |
3431 | ||
3432 | smb_buffer = cifs_buf_get(); | |
3433 | if (smb_buffer == NULL) { | |
3434 | return -ENOMEM; | |
3435 | } | |
3436 | smb_buffer_response = smb_buffer; | |
3437 | ||
3438 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3439 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3440 | |
3441 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3442 | smb_buffer->Uid = ses->Suid; |
3443 | pSMB = (TCONX_REQ *) smb_buffer; | |
3444 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3445 | ||
3446 | pSMB->AndXCommand = 0xFF; | |
3447 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3448 | bcc_ptr = &pSMB->Password[0]; |
fb8c4b14 | 3449 | if ((ses->server->secMode) & SECMODE_USER) { |
eeac8047 | 3450 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
7c7b25bc | 3451 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3452 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3453 | /* already aligned so no need to do it below */ |
eeac8047 | 3454 | } else { |
7c7b25bc | 3455 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3456 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3457 | specified as required (when that support is added to | |
3458 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3459 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3460 | by Samba (not sure whether other servers allow |
3461 | NTLMv2 password here) */ | |
7c7b25bc | 3462 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
50c2f753 | 3463 | if ((extended_security & CIFSSEC_MAY_LANMAN) && |
7c7b25bc SF |
3464 | (ses->server->secType == LANMAN)) |
3465 | calc_lanman_hash(ses, bcc_ptr); | |
3466 | else | |
3467 | #endif /* CIFS_WEAK_PW_HASH */ | |
eeac8047 SF |
3468 | SMBNTencrypt(ses->password, |
3469 | ses->server->cryptKey, | |
3470 | bcc_ptr); | |
3471 | ||
7c7b25bc | 3472 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
fb8c4b14 | 3473 | if (ses->capabilities & CAP_UNICODE) { |
7c7b25bc SF |
3474 | /* must align unicode strings */ |
3475 | *bcc_ptr = 0; /* null byte password */ | |
3476 | bcc_ptr++; | |
3477 | } | |
eeac8047 | 3478 | } |
1da177e4 | 3479 | |
50c2f753 | 3480 | if (ses->server->secMode & |
a878fb22 | 3481 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3482 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3483 | ||
3484 | if (ses->capabilities & CAP_STATUS32) { | |
3485 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3486 | } | |
3487 | if (ses->capabilities & CAP_DFS) { | |
3488 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3489 | } | |
3490 | if (ses->capabilities & CAP_UNICODE) { | |
3491 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3492 | length = | |
50c2f753 SF |
3493 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3494 | 6 /* max utf8 char length in bytes */ * | |
a878fb22 SF |
3495 | (/* server len*/ + 256 /* share len */), nls_codepage); |
3496 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3497 | bcc_ptr += 2; /* skip trailing null */ |
3498 | } else { /* ASCII */ | |
1da177e4 LT |
3499 | strcpy(bcc_ptr, tree); |
3500 | bcc_ptr += strlen(tree) + 1; | |
3501 | } | |
3502 | strcpy(bcc_ptr, "?????"); | |
3503 | bcc_ptr += strlen("?????"); | |
3504 | bcc_ptr += 1; | |
3505 | count = bcc_ptr - &pSMB->Password[0]; | |
3506 | pSMB->hdr.smb_buf_length += count; | |
3507 | pSMB->ByteCount = cpu_to_le16(count); | |
3508 | ||
133672ef SF |
3509 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, |
3510 | CIFS_STD_OP); | |
1da177e4 LT |
3511 | |
3512 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3513 | /* above now done in SendReceive */ | |
3514 | if ((rc == 0) && (tcon != NULL)) { | |
3515 | tcon->tidStatus = CifsGood; | |
3516 | tcon->tid = smb_buffer_response->Tid; | |
3517 | bcc_ptr = pByteArea(smb_buffer_response); | |
3518 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
50c2f753 | 3519 | /* skip service field (NB: this field is always ASCII) */ |
7f8ed420 SF |
3520 | if (length == 3) { |
3521 | if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') && | |
3522 | (bcc_ptr[2] == 'C')) { | |
3523 | cFYI(1, ("IPC connection")); | |
3524 | tcon->ipc = 1; | |
3525 | } | |
3526 | } else if (length == 2) { | |
3527 | if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) { | |
3528 | /* the most common case */ | |
3529 | cFYI(1, ("disk share connection")); | |
3530 | } | |
3531 | } | |
50c2f753 | 3532 | bcc_ptr += length + 1; |
1da177e4 LT |
3533 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
3534 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3535 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3536 | if ((bcc_ptr + (2 * length)) - | |
3537 | pByteArea(smb_buffer_response) <= | |
3538 | BCC(smb_buffer_response)) { | |
f99d49ad | 3539 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3540 | tcon->nativeFileSystem = |
e915fc49 | 3541 | kzalloc(length + 2, GFP_KERNEL); |
88f370a6 SF |
3542 | if (tcon->nativeFileSystem) |
3543 | cifs_strfromUCS_le( | |
3544 | tcon->nativeFileSystem, | |
3545 | (__le16 *) bcc_ptr, | |
3546 | length, nls_codepage); | |
1da177e4 LT |
3547 | bcc_ptr += 2 * length; |
3548 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3549 | bcc_ptr[1] = 0; | |
3550 | bcc_ptr += 2; | |
3551 | } | |
50c2f753 | 3552 | /* else do not bother copying these information fields*/ |
1da177e4 LT |
3553 | } else { |
3554 | length = strnlen(bcc_ptr, 1024); | |
3555 | if ((bcc_ptr + length) - | |
3556 | pByteArea(smb_buffer_response) <= | |
3557 | BCC(smb_buffer_response)) { | |
f99d49ad | 3558 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3559 | tcon->nativeFileSystem = |
e915fc49 | 3560 | kzalloc(length + 1, GFP_KERNEL); |
88f370a6 SF |
3561 | if (tcon->nativeFileSystem) |
3562 | strncpy(tcon->nativeFileSystem, bcc_ptr, | |
3563 | length); | |
1da177e4 | 3564 | } |
50c2f753 | 3565 | /* else do not bother copying these information fields*/ |
1da177e4 | 3566 | } |
fb8c4b14 | 3567 | if ((smb_buffer_response->WordCount == 3) || |
1a4e15a0 SF |
3568 | (smb_buffer_response->WordCount == 7)) |
3569 | /* field is in same location */ | |
3979877e SF |
3570 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
3571 | else | |
3572 | tcon->Flags = 0; | |
1da177e4 LT |
3573 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3574 | } else if ((rc == 0) && tcon == NULL) { | |
50c2f753 | 3575 | /* all we need to save for IPC$ connection */ |
1da177e4 LT |
3576 | ses->ipc_tid = smb_buffer_response->Tid; |
3577 | } | |
3578 | ||
a8a11d39 | 3579 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3580 | return rc; |
3581 | } | |
3582 | ||
3583 | int | |
3584 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3585 | { | |
3586 | int rc = 0; | |
3587 | int xid; | |
3588 | struct cifsSesInfo *ses = NULL; | |
50c2f753 | 3589 | char *tmp; |
1da177e4 LT |
3590 | |
3591 | xid = GetXid(); | |
3592 | ||
3593 | if (cifs_sb->tcon) { | |
3594 | ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ | |
3595 | rc = CIFSSMBTDis(xid, cifs_sb->tcon); | |
3596 | if (rc == -EBUSY) { | |
3597 | FreeXid(xid); | |
3598 | return 0; | |
3599 | } | |
5d941ca6 | 3600 | DeleteTconOplockQEntries(cifs_sb->tcon); |
1da177e4 LT |
3601 | tconInfoFree(cifs_sb->tcon); |
3602 | if ((ses) && (ses->server)) { | |
3603 | /* save off task so we do not refer to ses later */ | |
1da177e4 LT |
3604 | cFYI(1, ("About to do SMBLogoff ")); |
3605 | rc = CIFSSMBLogoff(xid, ses); | |
3606 | if (rc == -EBUSY) { | |
3607 | FreeXid(xid); | |
3608 | return 0; | |
3609 | } else if (rc == -ESHUTDOWN) { | |
467a8f8d | 3610 | cFYI(1, ("Waking up socket by sending signal")); |
b1c8d2b4 JL |
3611 | if (ses->server) |
3612 | kill_cifsd(ses->server); | |
1da177e4 LT |
3613 | rc = 0; |
3614 | } /* else - we have an smb session | |
3615 | left on this socket do not kill cifsd */ | |
3616 | } else | |
3617 | cFYI(1, ("No session or bad tcon")); | |
3618 | } | |
50c2f753 | 3619 | |
1da177e4 | 3620 | cifs_sb->tcon = NULL; |
2fe87f02 SF |
3621 | tmp = cifs_sb->prepath; |
3622 | cifs_sb->prepathlen = 0; | |
3623 | cifs_sb->prepath = NULL; | |
3624 | kfree(tmp); | |
1da177e4 LT |
3625 | if (ses) |
3626 | sesInfoFree(ses); | |
3627 | ||
3628 | FreeXid(xid); | |
88e7d705 | 3629 | return rc; |
50c2f753 | 3630 | } |
1da177e4 LT |
3631 | |
3632 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
50c2f753 | 3633 | struct nls_table *nls_info) |
1da177e4 LT |
3634 | { |
3635 | int rc = 0; | |
7c7b25bc | 3636 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
4b18f2a9 | 3637 | bool ntlmv2_flag = false; |
ad009ac9 | 3638 | int first_time = 0; |
cb7691b6 | 3639 | struct TCP_Server_Info *server = pSesInfo->server; |
1da177e4 LT |
3640 | |
3641 | /* what if server changes its buffer size after dropping the session? */ | |
cb7691b6 | 3642 | if (server->maxBuf == 0) /* no need to send on reconnect */ { |
1da177e4 | 3643 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
cb7691b6 JL |
3644 | if (rc == -EAGAIN) { |
3645 | /* retry only once on 1st time connection */ | |
1da177e4 | 3646 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
50c2f753 | 3647 | if (rc == -EAGAIN) |
1da177e4 LT |
3648 | rc = -EHOSTDOWN; |
3649 | } | |
fb8c4b14 | 3650 | if (rc == 0) { |
1da177e4 | 3651 | spin_lock(&GlobalMid_Lock); |
cb7691b6 JL |
3652 | if (server->tcpStatus != CifsExiting) |
3653 | server->tcpStatus = CifsGood; | |
1da177e4 LT |
3654 | else |
3655 | rc = -EHOSTDOWN; | |
3656 | spin_unlock(&GlobalMid_Lock); | |
3657 | ||
3658 | } | |
ad009ac9 | 3659 | first_time = 1; |
1da177e4 | 3660 | } |
26b994fa SF |
3661 | |
3662 | if (rc) | |
3663 | goto ss_err_exit; | |
3664 | ||
3665 | pSesInfo->flags = 0; | |
cb7691b6 | 3666 | pSesInfo->capabilities = server->capabilities; |
26b994fa SF |
3667 | if (linuxExtEnabled == 0) |
3668 | pSesInfo->capabilities &= (~CAP_UNIX); | |
ad009ac9 | 3669 | /* pSesInfo->sequence_number = 0;*/ |
26b994fa | 3670 | cFYI(1, ("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", |
cb7691b6 JL |
3671 | server->secMode, server->capabilities, server->timeAdj)); |
3672 | ||
26b994fa SF |
3673 | if (experimEnabled < 2) |
3674 | rc = CIFS_SessSetup(xid, pSesInfo, first_time, nls_info); | |
3675 | else if (extended_security | |
3676 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
cb7691b6 | 3677 | && (server->secType == NTLMSSP)) { |
26b994fa SF |
3678 | rc = -EOPNOTSUPP; |
3679 | } else if (extended_security | |
3680 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
cb7691b6 | 3681 | && (server->secType == RawNTLMSSP)) { |
26b994fa SF |
3682 | cFYI(1, ("NTLMSSP sesssetup")); |
3683 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, pSesInfo, &ntlmv2_flag, | |
3684 | nls_info); | |
3685 | if (!rc) { | |
3686 | if (ntlmv2_flag) { | |
3687 | char *v2_response; | |
3688 | cFYI(1, ("more secure NTLM ver2 hash")); | |
3689 | if (CalcNTLMv2_partial_mac_key(pSesInfo, | |
3690 | nls_info)) { | |
3691 | rc = -ENOMEM; | |
3692 | goto ss_err_exit; | |
3693 | } else | |
3694 | v2_response = kmalloc(16 + 64 /* blob*/, | |
3695 | GFP_KERNEL); | |
3696 | if (v2_response) { | |
3697 | CalcNTLMv2_response(pSesInfo, | |
3698 | v2_response); | |
3699 | /* if (first_time) | |
3700 | cifs_calculate_ntlmv2_mac_key */ | |
3701 | kfree(v2_response); | |
1da177e4 | 3702 | /* BB Put dummy sig in SessSetup PDU? */ |
1da177e4 | 3703 | } else { |
26b994fa SF |
3704 | rc = -ENOMEM; |
3705 | goto ss_err_exit; | |
1da177e4 | 3706 | } |
26b994fa SF |
3707 | |
3708 | } else { | |
3709 | SMBNTencrypt(pSesInfo->password, | |
cb7691b6 | 3710 | server->cryptKey, |
26b994fa SF |
3711 | ntlm_session_key); |
3712 | ||
3713 | if (first_time) | |
3714 | cifs_calculate_mac_key( | |
cb7691b6 | 3715 | &server->mac_signing_key, |
26b994fa SF |
3716 | ntlm_session_key, |
3717 | pSesInfo->password); | |
3718 | } | |
1da177e4 LT |
3719 | /* for better security the weaker lanman hash not sent |
3720 | in AuthSessSetup so we no longer calculate it */ | |
3721 | ||
26b994fa SF |
3722 | rc = CIFSNTLMSSPAuthSessSetup(xid, pSesInfo, |
3723 | ntlm_session_key, | |
3724 | ntlmv2_flag, | |
3725 | nls_info); | |
3726 | } | |
3727 | } else { /* old style NTLM 0.12 session setup */ | |
cb7691b6 | 3728 | SMBNTencrypt(pSesInfo->password, server->cryptKey, |
26b994fa | 3729 | ntlm_session_key); |
1da177e4 | 3730 | |
26b994fa | 3731 | if (first_time) |
cb7691b6 JL |
3732 | cifs_calculate_mac_key(&server->mac_signing_key, |
3733 | ntlm_session_key, | |
3734 | pSesInfo->password); | |
ad009ac9 | 3735 | |
26b994fa SF |
3736 | rc = CIFSSessSetup(xid, pSesInfo, ntlm_session_key, nls_info); |
3737 | } | |
3738 | if (rc) { | |
3739 | cERROR(1, ("Send error in SessSetup = %d", rc)); | |
3740 | } else { | |
3741 | cFYI(1, ("CIFS Session Established successfully")); | |
469ee614 | 3742 | spin_lock(&GlobalMid_Lock); |
1da177e4 | 3743 | pSesInfo->status = CifsGood; |
469ee614 | 3744 | spin_unlock(&GlobalMid_Lock); |
1da177e4 | 3745 | } |
26b994fa | 3746 | |
1da177e4 LT |
3747 | ss_err_exit: |
3748 | return rc; | |
3749 | } | |
3750 |