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; | |
63 | char *in6_addr; /* ipv6 address as human readable form of in6_addr */ | |
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; | |
78 | bool noperm:1; | |
79 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
80 | bool cifs_acl:1; | |
81 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ | |
82 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
83 | bool direct_io:1; | |
84 | bool remap:1; /* set to remap seven reserved chars in filenames */ | |
85 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ | |
86 | bool no_linux_ext:1; | |
87 | bool sfu_emul:1; | |
88 | bool nullauth:1; /* attempt to authenticate with null user */ | |
c46fa8ac SF |
89 | unsigned nocase; /* request case insensitive filenames */ |
90 | unsigned nobrl; /* disable sending byte range locks to srv */ | |
1da177e4 LT |
91 | unsigned int rsize; |
92 | unsigned int wsize; | |
93 | unsigned int sockopt; | |
94 | unsigned short int port; | |
fb8c4b14 | 95 | char *prepath; |
1da177e4 LT |
96 | }; |
97 | ||
fb8c4b14 | 98 | static int ipv4_connect(struct sockaddr_in *psin_server, |
1da177e4 | 99 | struct socket **csocket, |
fb8c4b14 SF |
100 | char *netb_name, |
101 | char *server_netb_name); | |
102 | static int ipv6_connect(struct sockaddr_in6 *psin_server, | |
1da177e4 LT |
103 | struct socket **csocket); |
104 | ||
105 | ||
fb8c4b14 | 106 | /* |
1da177e4 | 107 | * cifs tcp session reconnection |
fb8c4b14 | 108 | * |
1da177e4 LT |
109 | * mark tcp session as reconnecting so temporarily locked |
110 | * mark all smb sessions as reconnecting for tcp session | |
111 | * reconnect tcp session | |
112 | * wake up waiters on reconnection? - (not needed currently) | |
113 | */ | |
114 | ||
2cd646a2 | 115 | static int |
1da177e4 LT |
116 | cifs_reconnect(struct TCP_Server_Info *server) |
117 | { | |
118 | int rc = 0; | |
119 | struct list_head *tmp; | |
120 | struct cifsSesInfo *ses; | |
121 | struct cifsTconInfo *tcon; | |
fb8c4b14 | 122 | struct mid_q_entry *mid_entry; |
50c2f753 | 123 | |
1da177e4 | 124 | spin_lock(&GlobalMid_Lock); |
26f57364 | 125 | if (kthread_should_stop()) { |
fb8c4b14 | 126 | /* the demux thread will exit normally |
1da177e4 LT |
127 | next time through the loop */ |
128 | spin_unlock(&GlobalMid_Lock); | |
129 | return rc; | |
130 | } else | |
131 | server->tcpStatus = CifsNeedReconnect; | |
132 | spin_unlock(&GlobalMid_Lock); | |
133 | server->maxBuf = 0; | |
134 | ||
e4eb295d | 135 | cFYI(1, ("Reconnecting tcp session")); |
1da177e4 LT |
136 | |
137 | /* before reconnecting the tcp session, mark the smb session (uid) | |
138 | and the tid bad so they are not used until reconnected */ | |
139 | read_lock(&GlobalSMBSeslock); | |
140 | list_for_each(tmp, &GlobalSMBSessionList) { | |
141 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
142 | if (ses->server) { | |
143 | if (ses->server == server) { | |
144 | ses->status = CifsNeedReconnect; | |
145 | ses->ipc_tid = 0; | |
146 | } | |
147 | } | |
148 | /* else tcp and smb sessions need reconnection */ | |
149 | } | |
150 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
151 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); | |
26f57364 | 152 | if ((tcon) && (tcon->ses) && (tcon->ses->server == server)) |
1da177e4 | 153 | tcon->tidStatus = CifsNeedReconnect; |
1da177e4 LT |
154 | } |
155 | read_unlock(&GlobalSMBSeslock); | |
156 | /* do not want to be sending data on a socket we are freeing */ | |
fb8c4b14 SF |
157 | down(&server->tcpSem); |
158 | if (server->ssocket) { | |
467a8f8d | 159 | cFYI(1, ("State: 0x%x Flags: 0x%lx", server->ssocket->state, |
1da177e4 | 160 | server->ssocket->flags)); |
91cf45f0 | 161 | kernel_sock_shutdown(server->ssocket, SHUT_WR); |
fb8c4b14 | 162 | cFYI(1, ("Post shutdown state: 0x%x Flags: 0x%lx", |
467a8f8d | 163 | server->ssocket->state, |
1da177e4 LT |
164 | server->ssocket->flags)); |
165 | sock_release(server->ssocket); | |
166 | server->ssocket = NULL; | |
167 | } | |
168 | ||
169 | spin_lock(&GlobalMid_Lock); | |
170 | list_for_each(tmp, &server->pending_mid_q) { | |
171 | mid_entry = list_entry(tmp, struct | |
172 | mid_q_entry, | |
173 | qhead); | |
fb8c4b14 SF |
174 | if (mid_entry) { |
175 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
09d1db5c SF |
176 | /* Mark other intransit requests as needing |
177 | retry so we do not immediately mark the | |
178 | session bad again (ie after we reconnect | |
179 | below) as they timeout too */ | |
1da177e4 LT |
180 | mid_entry->midState = MID_RETRY_NEEDED; |
181 | } | |
182 | } | |
183 | } | |
184 | spin_unlock(&GlobalMid_Lock); | |
fb8c4b14 | 185 | up(&server->tcpSem); |
1da177e4 | 186 | |
26f57364 | 187 | while ((!kthread_should_stop()) && (server->tcpStatus != CifsGood)) { |
6c3d8909 | 188 | try_to_freeze(); |
fb8c4b14 SF |
189 | if (server->protocolType == IPV6) { |
190 | rc = ipv6_connect(&server->addr.sockAddr6, | |
191 | &server->ssocket); | |
1da177e4 | 192 | } else { |
fb8c4b14 | 193 | rc = ipv4_connect(&server->addr.sockAddr, |
1da177e4 | 194 | &server->ssocket, |
a10faeb2 SF |
195 | server->workstation_RFC1001_name, |
196 | server->server_RFC1001_name); | |
1da177e4 | 197 | } |
fb8c4b14 SF |
198 | if (rc) { |
199 | cFYI(1, ("reconnect error %d", rc)); | |
0cb766ae | 200 | msleep(3000); |
1da177e4 LT |
201 | } else { |
202 | atomic_inc(&tcpSesReconnectCount); | |
203 | spin_lock(&GlobalMid_Lock); | |
26f57364 | 204 | if (!kthread_should_stop()) |
1da177e4 | 205 | server->tcpStatus = CifsGood; |
ad009ac9 | 206 | server->sequence_number = 0; |
fb8c4b14 | 207 | spin_unlock(&GlobalMid_Lock); |
1da177e4 LT |
208 | /* atomic_set(&server->inFlight,0);*/ |
209 | wake_up(&server->response_q); | |
210 | } | |
211 | } | |
212 | return rc; | |
213 | } | |
214 | ||
fb8c4b14 | 215 | /* |
e4eb295d SF |
216 | return codes: |
217 | 0 not a transact2, or all data present | |
218 | >0 transact2 with that much data missing | |
219 | -EINVAL = invalid transact2 | |
220 | ||
221 | */ | |
fb8c4b14 | 222 | static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) |
e4eb295d | 223 | { |
fb8c4b14 SF |
224 | struct smb_t2_rsp *pSMBt; |
225 | int total_data_size; | |
e4eb295d SF |
226 | int data_in_this_rsp; |
227 | int remaining; | |
228 | ||
fb8c4b14 | 229 | if (pSMB->Command != SMB_COM_TRANSACTION2) |
e4eb295d SF |
230 | return 0; |
231 | ||
fb8c4b14 SF |
232 | /* check for plausible wct, bcc and t2 data and parm sizes */ |
233 | /* check for parm and data offset going beyond end of smb */ | |
234 | if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
467a8f8d | 235 | cFYI(1, ("invalid transact2 word count")); |
e4eb295d SF |
236 | return -EINVAL; |
237 | } | |
238 | ||
239 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
240 | ||
241 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
242 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
243 | ||
244 | remaining = total_data_size - data_in_this_rsp; | |
245 | ||
fb8c4b14 | 246 | if (remaining == 0) |
e4eb295d | 247 | return 0; |
fb8c4b14 | 248 | else if (remaining < 0) { |
467a8f8d | 249 | cFYI(1, ("total data %d smaller than data in frame %d", |
e4eb295d SF |
250 | total_data_size, data_in_this_rsp)); |
251 | return -EINVAL; | |
252 | } else { | |
467a8f8d | 253 | cFYI(1, ("missing %d bytes from transact2, check next response", |
e4eb295d | 254 | remaining)); |
fb8c4b14 SF |
255 | if (total_data_size > maxBufSize) { |
256 | cERROR(1, ("TotalDataSize %d is over maximum buffer %d", | |
257 | total_data_size, maxBufSize)); | |
258 | return -EINVAL; | |
e4eb295d SF |
259 | } |
260 | return remaining; | |
261 | } | |
262 | } | |
263 | ||
fb8c4b14 | 264 | static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) |
e4eb295d SF |
265 | { |
266 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
267 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
268 | int total_data_size; | |
269 | int total_in_buf; | |
270 | int remaining; | |
271 | int total_in_buf2; | |
fb8c4b14 SF |
272 | char *data_area_of_target; |
273 | char *data_area_of_buf2; | |
e4eb295d SF |
274 | __u16 byte_count; |
275 | ||
276 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
277 | ||
fb8c4b14 | 278 | if (total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { |
63135e08 | 279 | cFYI(1, ("total data size of primary and secondary t2 differ")); |
e4eb295d SF |
280 | } |
281 | ||
282 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
283 | ||
284 | remaining = total_data_size - total_in_buf; | |
50c2f753 | 285 | |
fb8c4b14 | 286 | if (remaining < 0) |
e4eb295d SF |
287 | return -EINVAL; |
288 | ||
fb8c4b14 | 289 | if (remaining == 0) /* nothing to do, ignore */ |
e4eb295d | 290 | return 0; |
50c2f753 | 291 | |
e4eb295d | 292 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); |
fb8c4b14 | 293 | if (remaining < total_in_buf2) { |
467a8f8d | 294 | cFYI(1, ("transact2 2nd response contains too much data")); |
e4eb295d SF |
295 | } |
296 | ||
297 | /* find end of first SMB data area */ | |
fb8c4b14 | 298 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + |
e4eb295d SF |
299 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); |
300 | /* validate target area */ | |
301 | ||
302 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
fb8c4b14 | 303 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); |
e4eb295d SF |
304 | |
305 | data_area_of_target += total_in_buf; | |
306 | ||
307 | /* copy second buffer into end of first buffer */ | |
fb8c4b14 | 308 | memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); |
e4eb295d SF |
309 | total_in_buf += total_in_buf2; |
310 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
311 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
312 | byte_count += total_in_buf2; | |
313 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
314 | ||
70ca734a | 315 | byte_count = pTargetSMB->smb_buf_length; |
e4eb295d SF |
316 | byte_count += total_in_buf2; |
317 | ||
318 | /* BB also add check that we are not beyond maximum buffer size */ | |
50c2f753 | 319 | |
70ca734a | 320 | pTargetSMB->smb_buf_length = byte_count; |
e4eb295d | 321 | |
fb8c4b14 | 322 | if (remaining == total_in_buf2) { |
467a8f8d | 323 | cFYI(1, ("found the last secondary response")); |
e4eb295d SF |
324 | return 0; /* we are done */ |
325 | } else /* more responses to go */ | |
326 | return 1; | |
327 | ||
328 | } | |
329 | ||
1da177e4 LT |
330 | static int |
331 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
332 | { | |
333 | int length; | |
334 | unsigned int pdu_length, total_read; | |
335 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
336 | struct smb_hdr *bigbuf = NULL; |
337 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
338 | struct msghdr smb_msg; |
339 | struct kvec iov; | |
340 | struct socket *csocket = server->ssocket; | |
341 | struct list_head *tmp; | |
342 | struct cifsSesInfo *ses; | |
343 | struct task_struct *task_to_wake = NULL; | |
344 | struct mid_q_entry *mid_entry; | |
70ca734a | 345 | char temp; |
4b18f2a9 SF |
346 | bool isLargeBuf = false; |
347 | bool isMultiRsp; | |
e4eb295d | 348 | int reconnect; |
1da177e4 | 349 | |
1da177e4 LT |
350 | current->flags |= PF_MEMALLOC; |
351 | server->tsk = current; /* save process info to wake at shutdown */ | |
ba25f9dc | 352 | cFYI(1, ("Demultiplex PID: %d", task_pid_nr(current))); |
fb8c4b14 | 353 | write_lock(&GlobalSMBSeslock); |
1da177e4 LT |
354 | atomic_inc(&tcpSesAllocCount); |
355 | length = tcpSesAllocCount.counter; | |
356 | write_unlock(&GlobalSMBSeslock); | |
26f57364 SF |
357 | if (length > 1) |
358 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, | |
359 | GFP_KERNEL); | |
1da177e4 | 360 | |
83144186 | 361 | set_freezable(); |
aaf737ad | 362 | while (!kthread_should_stop()) { |
ede1327e SF |
363 | if (try_to_freeze()) |
364 | continue; | |
b8643e1b SF |
365 | if (bigbuf == NULL) { |
366 | bigbuf = cifs_buf_get(); | |
0fd1ffe0 PM |
367 | if (!bigbuf) { |
368 | cERROR(1, ("No memory for large SMB response")); | |
b8643e1b SF |
369 | msleep(3000); |
370 | /* retry will check if exiting */ | |
371 | continue; | |
372 | } | |
0fd1ffe0 PM |
373 | } else if (isLargeBuf) { |
374 | /* we are reusing a dirty large buf, clear its start */ | |
26f57364 | 375 | memset(bigbuf, 0, sizeof(struct smb_hdr)); |
1da177e4 | 376 | } |
b8643e1b SF |
377 | |
378 | if (smallbuf == NULL) { | |
379 | smallbuf = cifs_small_buf_get(); | |
0fd1ffe0 PM |
380 | if (!smallbuf) { |
381 | cERROR(1, ("No memory for SMB response")); | |
b8643e1b SF |
382 | msleep(1000); |
383 | /* retry will check if exiting */ | |
384 | continue; | |
385 | } | |
386 | /* beginning of smb buffer is cleared in our buf_get */ | |
387 | } else /* if existing small buf clear beginning */ | |
26f57364 | 388 | memset(smallbuf, 0, sizeof(struct smb_hdr)); |
b8643e1b | 389 | |
4b18f2a9 SF |
390 | isLargeBuf = false; |
391 | isMultiRsp = false; | |
b8643e1b | 392 | smb_buffer = smallbuf; |
1da177e4 LT |
393 | iov.iov_base = smb_buffer; |
394 | iov.iov_len = 4; | |
395 | smb_msg.msg_control = NULL; | |
396 | smb_msg.msg_controllen = 0; | |
f01d5e14 SF |
397 | pdu_length = 4; /* enough to get RFC1001 header */ |
398 | incomplete_rcv: | |
1da177e4 LT |
399 | length = |
400 | kernel_recvmsg(csocket, &smb_msg, | |
f01d5e14 | 401 | &iov, 1, pdu_length, 0 /* BB other flags? */); |
1da177e4 | 402 | |
26f57364 | 403 | if (kthread_should_stop()) { |
1da177e4 LT |
404 | break; |
405 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
0fd1ffe0 | 406 | cFYI(1, ("Reconnect after server stopped responding")); |
1da177e4 | 407 | cifs_reconnect(server); |
0fd1ffe0 | 408 | cFYI(1, ("call to reconnect done")); |
1da177e4 LT |
409 | csocket = server->ssocket; |
410 | continue; | |
411 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 412 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
413 | allowing socket to clear and app threads to set |
414 | tcpStatus CifsNeedReconnect if server hung */ | |
c18c732e SF |
415 | if (pdu_length < 4) |
416 | goto incomplete_rcv; | |
417 | else | |
418 | continue; | |
1da177e4 | 419 | } else if (length <= 0) { |
0fd1ffe0 PM |
420 | if (server->tcpStatus == CifsNew) { |
421 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
422 | /* some servers kill the TCP session rather than |
423 | returning an SMB negprot error, in which | |
424 | case reconnecting here is not going to help, | |
425 | and so simply return error to mount */ | |
1da177e4 LT |
426 | break; |
427 | } | |
0fd1ffe0 | 428 | if (!try_to_freeze() && (length == -EINTR)) { |
467a8f8d | 429 | cFYI(1, ("cifsd thread killed")); |
1da177e4 LT |
430 | break; |
431 | } | |
467a8f8d | 432 | cFYI(1, ("Reconnect after unexpected peek error %d", |
57337e42 | 433 | length)); |
1da177e4 LT |
434 | cifs_reconnect(server); |
435 | csocket = server->ssocket; | |
436 | wake_up(&server->response_q); | |
437 | continue; | |
2a974680 PT |
438 | } else if (length < pdu_length) { |
439 | cFYI(1, ("requested %d bytes but only got %d bytes", | |
440 | pdu_length, length)); | |
f01d5e14 | 441 | pdu_length -= length; |
f01d5e14 SF |
442 | msleep(1); |
443 | goto incomplete_rcv; | |
46810cbf | 444 | } |
1da177e4 | 445 | |
70ca734a SF |
446 | /* The right amount was read from socket - 4 bytes */ |
447 | /* so we can now interpret the length field */ | |
46810cbf | 448 | |
70ca734a SF |
449 | /* the first byte big endian of the length field, |
450 | is actually not part of the length but the type | |
451 | with the most common, zero, as regular data */ | |
452 | temp = *((char *) smb_buffer); | |
46810cbf | 453 | |
fb8c4b14 | 454 | /* Note that FC 1001 length is big endian on the wire, |
70ca734a SF |
455 | but we convert it here so it is always manipulated |
456 | as host byte order */ | |
46810cbf | 457 | pdu_length = ntohl(smb_buffer->smb_buf_length); |
70ca734a SF |
458 | smb_buffer->smb_buf_length = pdu_length; |
459 | ||
467a8f8d | 460 | cFYI(1, ("rfc1002 length 0x%x", pdu_length+4)); |
46810cbf | 461 | |
70ca734a | 462 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
fb8c4b14 | 463 | continue; |
70ca734a | 464 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
467a8f8d | 465 | cFYI(1, ("Good RFC 1002 session rsp")); |
e4eb295d | 466 | continue; |
70ca734a | 467 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
fb8c4b14 | 468 | /* we get this from Windows 98 instead of |
46810cbf | 469 | an error on SMB negprot response */ |
fb8c4b14 | 470 | cFYI(1, ("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 471 | pdu_length)); |
fb8c4b14 SF |
472 | if (server->tcpStatus == CifsNew) { |
473 | /* if nack on negprot (rather than | |
46810cbf SF |
474 | ret of smb negprot error) reconnecting |
475 | not going to help, ret error to mount */ | |
476 | break; | |
477 | } else { | |
478 | /* give server a second to | |
479 | clean up before reconnect attempt */ | |
480 | msleep(1000); | |
481 | /* always try 445 first on reconnect | |
482 | since we get NACK on some if we ever | |
fb8c4b14 | 483 | connected to port 139 (the NACK is |
46810cbf SF |
484 | since we do not begin with RFC1001 |
485 | session initialize frame) */ | |
fb8c4b14 | 486 | server->addr.sockAddr.sin_port = |
46810cbf | 487 | htons(CIFS_PORT); |
1da177e4 LT |
488 | cifs_reconnect(server); |
489 | csocket = server->ssocket; | |
46810cbf | 490 | wake_up(&server->response_q); |
1da177e4 | 491 | continue; |
46810cbf | 492 | } |
70ca734a | 493 | } else if (temp != (char) 0) { |
fb8c4b14 | 494 | cERROR(1, ("Unknown RFC 1002 frame")); |
70ca734a SF |
495 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
496 | length); | |
46810cbf SF |
497 | cifs_reconnect(server); |
498 | csocket = server->ssocket; | |
499 | continue; | |
e4eb295d SF |
500 | } |
501 | ||
502 | /* else we have an SMB response */ | |
fb8c4b14 | 503 | if ((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || |
26f57364 | 504 | (pdu_length < sizeof(struct smb_hdr) - 1 - 4)) { |
e4eb295d | 505 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 506 | length, pdu_length+4)); |
e4eb295d SF |
507 | cifs_reconnect(server); |
508 | csocket = server->ssocket; | |
509 | wake_up(&server->response_q); | |
510 | continue; | |
fb8c4b14 | 511 | } |
e4eb295d SF |
512 | |
513 | /* else length ok */ | |
514 | reconnect = 0; | |
515 | ||
fb8c4b14 | 516 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
4b18f2a9 | 517 | isLargeBuf = true; |
e4eb295d SF |
518 | memcpy(bigbuf, smallbuf, 4); |
519 | smb_buffer = bigbuf; | |
520 | } | |
521 | length = 0; | |
522 | iov.iov_base = 4 + (char *)smb_buffer; | |
523 | iov.iov_len = pdu_length; | |
fb8c4b14 | 524 | for (total_read = 0; total_read < pdu_length; |
e4eb295d SF |
525 | total_read += length) { |
526 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
527 | pdu_length - total_read, 0); | |
26f57364 | 528 | if (kthread_should_stop() || |
e4eb295d SF |
529 | (length == -EINTR)) { |
530 | /* then will exit */ | |
531 | reconnect = 2; | |
532 | break; | |
533 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
534 | cifs_reconnect(server); |
535 | csocket = server->ssocket; | |
fb8c4b14 | 536 | /* Reconnect wakes up rspns q */ |
e4eb295d SF |
537 | /* Now we will reread sock */ |
538 | reconnect = 1; | |
539 | break; | |
fb8c4b14 | 540 | } else if ((length == -ERESTARTSYS) || |
e4eb295d SF |
541 | (length == -EAGAIN)) { |
542 | msleep(1); /* minimum sleep to prevent looping, | |
fb8c4b14 | 543 | allowing socket to clear and app |
e4eb295d SF |
544 | threads to set tcpStatus |
545 | CifsNeedReconnect if server hung*/ | |
c18c732e | 546 | length = 0; |
46810cbf | 547 | continue; |
e4eb295d | 548 | } else if (length <= 0) { |
fb8c4b14 | 549 | cERROR(1, ("Received no data, expecting %d", |
e4eb295d SF |
550 | pdu_length - total_read)); |
551 | cifs_reconnect(server); | |
552 | csocket = server->ssocket; | |
553 | reconnect = 1; | |
554 | break; | |
46810cbf | 555 | } |
e4eb295d | 556 | } |
fb8c4b14 | 557 | if (reconnect == 2) |
e4eb295d | 558 | break; |
fb8c4b14 | 559 | else if (reconnect == 1) |
e4eb295d | 560 | continue; |
1da177e4 | 561 | |
e4eb295d | 562 | length += 4; /* account for rfc1002 hdr */ |
50c2f753 | 563 | |
09d1db5c | 564 | |
e4eb295d | 565 | dump_smb(smb_buffer, length); |
184ed211 | 566 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 567 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
568 | continue; |
569 | } | |
1da177e4 | 570 | |
e4eb295d SF |
571 | |
572 | task_to_wake = NULL; | |
573 | spin_lock(&GlobalMid_Lock); | |
574 | list_for_each(tmp, &server->pending_mid_q) { | |
575 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
576 | ||
50c2f753 | 577 | if ((mid_entry->mid == smb_buffer->Mid) && |
e4eb295d SF |
578 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && |
579 | (mid_entry->command == smb_buffer->Command)) { | |
fb8c4b14 | 580 | if (check2ndT2(smb_buffer,server->maxBuf) > 0) { |
e4eb295d | 581 | /* We have a multipart transact2 resp */ |
4b18f2a9 | 582 | isMultiRsp = true; |
fb8c4b14 | 583 | if (mid_entry->resp_buf) { |
e4eb295d | 584 | /* merge response - fix up 1st*/ |
50c2f753 | 585 | if (coalesce_t2(smb_buffer, |
e4eb295d | 586 | mid_entry->resp_buf)) { |
4b18f2a9 SF |
587 | mid_entry->multiRsp = |
588 | true; | |
e4eb295d SF |
589 | break; |
590 | } else { | |
591 | /* all parts received */ | |
4b18f2a9 SF |
592 | mid_entry->multiEnd = |
593 | true; | |
50c2f753 | 594 | goto multi_t2_fnd; |
e4eb295d SF |
595 | } |
596 | } else { | |
fb8c4b14 | 597 | if (!isLargeBuf) { |
e4eb295d SF |
598 | cERROR(1,("1st trans2 resp needs bigbuf")); |
599 | /* BB maybe we can fix this up, switch | |
50c2f753 | 600 | to already allocated large buffer? */ |
e4eb295d | 601 | } else { |
cd63499c | 602 | /* Have first buffer */ |
e4eb295d SF |
603 | mid_entry->resp_buf = |
604 | smb_buffer; | |
4b18f2a9 SF |
605 | mid_entry->largeBuf = |
606 | true; | |
e4eb295d SF |
607 | bigbuf = NULL; |
608 | } | |
609 | } | |
610 | break; | |
50c2f753 | 611 | } |
e4eb295d | 612 | mid_entry->resp_buf = smb_buffer; |
4b18f2a9 | 613 | mid_entry->largeBuf = isLargeBuf; |
e4eb295d SF |
614 | multi_t2_fnd: |
615 | task_to_wake = mid_entry->tsk; | |
616 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
617 | #ifdef CONFIG_CIFS_STATS2 |
618 | mid_entry->when_received = jiffies; | |
619 | #endif | |
3a5ff61c SF |
620 | /* so we do not time out requests to server |
621 | which is still responding (since server could | |
622 | be busy but not dead) */ | |
623 | server->lstrp = jiffies; | |
e4eb295d | 624 | break; |
46810cbf | 625 | } |
1da177e4 | 626 | } |
e4eb295d SF |
627 | spin_unlock(&GlobalMid_Lock); |
628 | if (task_to_wake) { | |
cd63499c | 629 | /* Was previous buf put in mpx struct for multi-rsp? */ |
fb8c4b14 | 630 | if (!isMultiRsp) { |
cd63499c | 631 | /* smb buffer will be freed by user thread */ |
26f57364 | 632 | if (isLargeBuf) |
cd63499c | 633 | bigbuf = NULL; |
26f57364 | 634 | else |
cd63499c SF |
635 | smallbuf = NULL; |
636 | } | |
e4eb295d | 637 | wake_up_process(task_to_wake); |
4b18f2a9 SF |
638 | } else if (!is_valid_oplock_break(smb_buffer, server) && |
639 | !isMultiRsp) { | |
50c2f753 SF |
640 | cERROR(1, ("No task to wake, unknown frame received! " |
641 | "NumMids %d", midCount.counter)); | |
642 | cifs_dump_mem("Received Data is: ", (char *)smb_buffer, | |
70ca734a | 643 | sizeof(struct smb_hdr)); |
3979877e SF |
644 | #ifdef CONFIG_CIFS_DEBUG2 |
645 | cifs_dump_detail(smb_buffer); | |
646 | cifs_dump_mids(server); | |
647 | #endif /* CIFS_DEBUG2 */ | |
50c2f753 | 648 | |
e4eb295d SF |
649 | } |
650 | } /* end while !EXITING */ | |
651 | ||
1da177e4 LT |
652 | spin_lock(&GlobalMid_Lock); |
653 | server->tcpStatus = CifsExiting; | |
654 | server->tsk = NULL; | |
31ca3bc3 SF |
655 | /* check if we have blocked requests that need to free */ |
656 | /* Note that cifs_max_pending is normally 50, but | |
657 | can be set at module install time to as little as two */ | |
fb8c4b14 | 658 | if (atomic_read(&server->inFlight) >= cifs_max_pending) |
31ca3bc3 SF |
659 | atomic_set(&server->inFlight, cifs_max_pending - 1); |
660 | /* We do not want to set the max_pending too low or we | |
661 | could end up with the counter going negative */ | |
1da177e4 | 662 | spin_unlock(&GlobalMid_Lock); |
50c2f753 | 663 | /* Although there should not be any requests blocked on |
1da177e4 | 664 | this queue it can not hurt to be paranoid and try to wake up requests |
09d1db5c | 665 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
666 | to the same server - they now will see the session is in exit state |
667 | and get out of SendReceive. */ | |
668 | wake_up_all(&server->request_q); | |
669 | /* give those requests time to exit */ | |
b8643e1b | 670 | msleep(125); |
50c2f753 | 671 | |
fb8c4b14 | 672 | if (server->ssocket) { |
1da177e4 LT |
673 | sock_release(csocket); |
674 | server->ssocket = NULL; | |
675 | } | |
b8643e1b | 676 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
a8a11d39 MK |
677 | cifs_buf_release(bigbuf); |
678 | if (smallbuf) /* no sense logging a debug message if NULL */ | |
b8643e1b | 679 | cifs_small_buf_release(smallbuf); |
1da177e4 LT |
680 | |
681 | read_lock(&GlobalSMBSeslock); | |
682 | if (list_empty(&server->pending_mid_q)) { | |
09d1db5c SF |
683 | /* loop through server session structures attached to this and |
684 | mark them dead */ | |
1da177e4 LT |
685 | list_for_each(tmp, &GlobalSMBSessionList) { |
686 | ses = | |
687 | list_entry(tmp, struct cifsSesInfo, | |
688 | cifsSessionList); | |
689 | if (ses->server == server) { | |
690 | ses->status = CifsExiting; | |
691 | ses->server = NULL; | |
692 | } | |
693 | } | |
694 | read_unlock(&GlobalSMBSeslock); | |
695 | } else { | |
31ca3bc3 SF |
696 | /* although we can not zero the server struct pointer yet, |
697 | since there are active requests which may depnd on them, | |
698 | mark the corresponding SMB sessions as exiting too */ | |
699 | list_for_each(tmp, &GlobalSMBSessionList) { | |
700 | ses = list_entry(tmp, struct cifsSesInfo, | |
701 | cifsSessionList); | |
26f57364 | 702 | if (ses->server == server) |
31ca3bc3 | 703 | ses->status = CifsExiting; |
31ca3bc3 SF |
704 | } |
705 | ||
1da177e4 LT |
706 | spin_lock(&GlobalMid_Lock); |
707 | list_for_each(tmp, &server->pending_mid_q) { | |
708 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
709 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
50c2f753 SF |
710 | cFYI(1, ("Clearing Mid 0x%x - waking up ", |
711 | mid_entry->mid)); | |
1da177e4 | 712 | task_to_wake = mid_entry->tsk; |
26f57364 | 713 | if (task_to_wake) |
1da177e4 | 714 | wake_up_process(task_to_wake); |
1da177e4 LT |
715 | } |
716 | } | |
717 | spin_unlock(&GlobalMid_Lock); | |
718 | read_unlock(&GlobalSMBSeslock); | |
1da177e4 | 719 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 720 | msleep(125); |
1da177e4 LT |
721 | } |
722 | ||
f191401f | 723 | if (!list_empty(&server->pending_mid_q)) { |
50c2f753 | 724 | /* mpx threads have not exited yet give them |
1da177e4 | 725 | at least the smb send timeout time for long ops */ |
31ca3bc3 SF |
726 | /* due to delays on oplock break requests, we need |
727 | to wait at least 45 seconds before giving up | |
728 | on a request getting a response and going ahead | |
729 | and killing cifsd */ | |
1da177e4 | 730 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 731 | msleep(46000); |
1da177e4 LT |
732 | /* if threads still have not exited they are probably never |
733 | coming home not much else we can do but free the memory */ | |
734 | } | |
1da177e4 LT |
735 | |
736 | write_lock(&GlobalSMBSeslock); | |
737 | atomic_dec(&tcpSesAllocCount); | |
738 | length = tcpSesAllocCount.counter; | |
31ca3bc3 SF |
739 | |
740 | /* last chance to mark ses pointers invalid | |
741 | if there are any pointing to this (e.g | |
50c2f753 | 742 | if a crazy root user tried to kill cifsd |
31ca3bc3 SF |
743 | kernel thread explicitly this might happen) */ |
744 | list_for_each(tmp, &GlobalSMBSessionList) { | |
745 | ses = list_entry(tmp, struct cifsSesInfo, | |
746 | cifsSessionList); | |
26f57364 | 747 | if (ses->server == server) |
31ca3bc3 | 748 | ses->server = NULL; |
31ca3bc3 | 749 | } |
1da177e4 | 750 | write_unlock(&GlobalSMBSeslock); |
31ca3bc3 | 751 | |
c359cf3c | 752 | kfree(server->hostname); |
31ca3bc3 | 753 | kfree(server); |
26f57364 SF |
754 | if (length > 0) |
755 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, | |
756 | GFP_KERNEL); | |
50c2f753 | 757 | |
1da177e4 LT |
758 | return 0; |
759 | } | |
760 | ||
c359cf3c JL |
761 | /* extract the host portion of the UNC string */ |
762 | static char * | |
763 | extract_hostname(const char *unc) | |
764 | { | |
765 | const char *src; | |
766 | char *dst, *delim; | |
767 | unsigned int len; | |
768 | ||
769 | /* skip double chars at beginning of string */ | |
770 | /* BB: check validity of these bytes? */ | |
771 | src = unc + 2; | |
772 | ||
773 | /* delimiter between hostname and sharename is always '\\' now */ | |
774 | delim = strchr(src, '\\'); | |
775 | if (!delim) | |
776 | return ERR_PTR(-EINVAL); | |
777 | ||
778 | len = delim - src; | |
779 | dst = kmalloc((len + 1), GFP_KERNEL); | |
780 | if (dst == NULL) | |
781 | return ERR_PTR(-ENOMEM); | |
782 | ||
783 | memcpy(dst, src, len); | |
784 | dst[len] = '\0'; | |
785 | ||
786 | return dst; | |
787 | } | |
788 | ||
1da177e4 | 789 | static int |
50c2f753 SF |
790 | cifs_parse_mount_options(char *options, const char *devname, |
791 | struct smb_vol *vol) | |
1da177e4 LT |
792 | { |
793 | char *value; | |
794 | char *data; | |
795 | unsigned int temp_len, i, j; | |
796 | char separator[2]; | |
797 | ||
798 | separator[0] = ','; | |
50c2f753 | 799 | separator[1] = 0; |
1da177e4 | 800 | |
12e36b2f | 801 | if (Local_System_Name[0] != 0) |
50c2f753 | 802 | memcpy(vol->source_rfc1001_name, Local_System_Name, 15); |
2cd646a2 | 803 | else { |
12e36b2f | 804 | char *nodename = utsname()->nodename; |
50c2f753 SF |
805 | int n = strnlen(nodename, 15); |
806 | memset(vol->source_rfc1001_name, 0x20, 15); | |
807 | for (i = 0; i < n; i++) { | |
2cd646a2 SF |
808 | /* does not have to be perfect mapping since field is |
809 | informational, only used for servers that do not support | |
810 | port 445 and it can be overridden at mount time */ | |
12e36b2f | 811 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
2cd646a2 | 812 | } |
1da177e4 LT |
813 | } |
814 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
815 | /* null target name indicates to use *SMBSERVR default called name |
816 | if we end up sending RFC1001 session initialize */ | |
817 | vol->target_rfc1001_name[0] = 0; | |
1da177e4 LT |
818 | vol->linux_uid = current->uid; /* current->euid instead? */ |
819 | vol->linux_gid = current->gid; | |
820 | vol->dir_mode = S_IRWXUGO; | |
821 | /* 2767 perms indicate mandatory locking support */ | |
7505e052 | 822 | vol->file_mode = (S_IRWXUGO | S_ISGID) & (~S_IXGRP); |
1da177e4 LT |
823 | |
824 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
4b18f2a9 | 825 | vol->rw = true; |
ac67055e JA |
826 | /* default is always to request posix paths. */ |
827 | vol->posix_paths = 1; | |
828 | ||
1da177e4 LT |
829 | if (!options) |
830 | return 1; | |
831 | ||
50c2f753 | 832 | if (strncmp(options, "sep=", 4) == 0) { |
fb8c4b14 | 833 | if (options[4] != 0) { |
1da177e4 LT |
834 | separator[0] = options[4]; |
835 | options += 5; | |
836 | } else { | |
467a8f8d | 837 | cFYI(1, ("Null separator not allowed")); |
1da177e4 LT |
838 | } |
839 | } | |
50c2f753 | 840 | |
1da177e4 LT |
841 | while ((data = strsep(&options, separator)) != NULL) { |
842 | if (!*data) | |
843 | continue; | |
844 | if ((value = strchr(data, '=')) != NULL) | |
845 | *value++ = '\0'; | |
846 | ||
50c2f753 SF |
847 | /* Have to parse this before we parse for "user" */ |
848 | if (strnicmp(data, "user_xattr", 10) == 0) { | |
1da177e4 | 849 | vol->no_xattr = 0; |
50c2f753 | 850 | } else if (strnicmp(data, "nouser_xattr", 12) == 0) { |
1da177e4 LT |
851 | vol->no_xattr = 1; |
852 | } else if (strnicmp(data, "user", 4) == 0) { | |
4b952a9b | 853 | if (!value) { |
1da177e4 LT |
854 | printk(KERN_WARNING |
855 | "CIFS: invalid or missing username\n"); | |
856 | return 1; /* needs_arg; */ | |
fb8c4b14 | 857 | } else if (!*value) { |
4b952a9b SF |
858 | /* null user, ie anonymous, authentication */ |
859 | vol->nullauth = 1; | |
1da177e4 LT |
860 | } |
861 | if (strnlen(value, 200) < 200) { | |
862 | vol->username = value; | |
863 | } else { | |
864 | printk(KERN_WARNING "CIFS: username too long\n"); | |
865 | return 1; | |
866 | } | |
867 | } else if (strnicmp(data, "pass", 4) == 0) { | |
868 | if (!value) { | |
869 | vol->password = NULL; | |
870 | continue; | |
fb8c4b14 | 871 | } else if (value[0] == 0) { |
1da177e4 LT |
872 | /* check if string begins with double comma |
873 | since that would mean the password really | |
874 | does start with a comma, and would not | |
875 | indicate an empty string */ | |
fb8c4b14 | 876 | if (value[1] != separator[0]) { |
1da177e4 LT |
877 | vol->password = NULL; |
878 | continue; | |
879 | } | |
880 | } | |
881 | temp_len = strlen(value); | |
882 | /* removed password length check, NTLM passwords | |
883 | can be arbitrarily long */ | |
884 | ||
50c2f753 | 885 | /* if comma in password, the string will be |
1da177e4 LT |
886 | prematurely null terminated. Commas in password are |
887 | specified across the cifs mount interface by a double | |
888 | comma ie ,, and a comma used as in other cases ie ',' | |
889 | as a parameter delimiter/separator is single and due | |
890 | to the strsep above is temporarily zeroed. */ | |
891 | ||
892 | /* NB: password legally can have multiple commas and | |
893 | the only illegal character in a password is null */ | |
894 | ||
50c2f753 | 895 | if ((value[temp_len] == 0) && |
09d1db5c | 896 | (value[temp_len+1] == separator[0])) { |
1da177e4 LT |
897 | /* reinsert comma */ |
898 | value[temp_len] = separator[0]; | |
50c2f753 SF |
899 | temp_len += 2; /* move after second comma */ |
900 | while (value[temp_len] != 0) { | |
1da177e4 | 901 | if (value[temp_len] == separator[0]) { |
50c2f753 | 902 | if (value[temp_len+1] == |
09d1db5c SF |
903 | separator[0]) { |
904 | /* skip second comma */ | |
905 | temp_len++; | |
50c2f753 | 906 | } else { |
1da177e4 LT |
907 | /* single comma indicating start |
908 | of next parm */ | |
909 | break; | |
910 | } | |
911 | } | |
912 | temp_len++; | |
913 | } | |
fb8c4b14 | 914 | if (value[temp_len] == 0) { |
1da177e4 LT |
915 | options = NULL; |
916 | } else { | |
917 | value[temp_len] = 0; | |
918 | /* point option to start of next parm */ | |
919 | options = value + temp_len + 1; | |
920 | } | |
50c2f753 | 921 | /* go from value to value + temp_len condensing |
1da177e4 LT |
922 | double commas to singles. Note that this ends up |
923 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 924 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
fb8c4b14 | 925 | if (vol->password == NULL) { |
50c2f753 SF |
926 | printk(KERN_WARNING "CIFS: no memory " |
927 | "for password\n"); | |
433dc24f SF |
928 | return 1; |
929 | } | |
50c2f753 | 930 | for (i = 0, j = 0; i < temp_len; i++, j++) { |
1da177e4 | 931 | vol->password[j] = value[i]; |
fb8c4b14 | 932 | if (value[i] == separator[0] |
09d1db5c | 933 | && value[i+1] == separator[0]) { |
1da177e4 LT |
934 | /* skip second comma */ |
935 | i++; | |
936 | } | |
937 | } | |
938 | vol->password[j] = 0; | |
939 | } else { | |
e915fc49 | 940 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
fb8c4b14 | 941 | if (vol->password == NULL) { |
50c2f753 SF |
942 | printk(KERN_WARNING "CIFS: no memory " |
943 | "for password\n"); | |
433dc24f SF |
944 | return 1; |
945 | } | |
1da177e4 LT |
946 | strcpy(vol->password, value); |
947 | } | |
948 | } else if (strnicmp(data, "ip", 2) == 0) { | |
949 | if (!value || !*value) { | |
950 | vol->UNCip = NULL; | |
951 | } else if (strnlen(value, 35) < 35) { | |
952 | vol->UNCip = value; | |
953 | } else { | |
50c2f753 SF |
954 | printk(KERN_WARNING "CIFS: ip address " |
955 | "too long\n"); | |
1da177e4 LT |
956 | return 1; |
957 | } | |
50c2f753 SF |
958 | } else if (strnicmp(data, "sec", 3) == 0) { |
959 | if (!value || !*value) { | |
960 | cERROR(1, ("no security value specified")); | |
961 | continue; | |
962 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
963 | vol->secFlg |= CIFSSEC_MAY_KRB5 | | |
189acaae | 964 | CIFSSEC_MUST_SIGN; |
bf820679 | 965 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
50c2f753 SF |
966 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
967 | CIFSSEC_MAY_KRB5; */ | |
968 | cERROR(1, ("Krb5 cifs privacy not supported")); | |
bf820679 SF |
969 | return 1; |
970 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 971 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
bf820679 | 972 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 973 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 974 | CIFSSEC_MUST_SIGN; |
bf820679 | 975 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 976 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 977 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 978 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 979 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
980 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
981 | /* ntlm is default so can be turned off too */ | |
750d1151 | 982 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 983 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 984 | /* BB is there a better way to do this? */ |
750d1151 | 985 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
986 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
987 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
50c2f753 | 988 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 989 | #endif |
bf820679 | 990 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 991 | vol->nullauth = 1; |
50c2f753 SF |
992 | } else { |
993 | cERROR(1, ("bad security option: %s", value)); | |
994 | return 1; | |
995 | } | |
1da177e4 LT |
996 | } else if ((strnicmp(data, "unc", 3) == 0) |
997 | || (strnicmp(data, "target", 6) == 0) | |
998 | || (strnicmp(data, "path", 4) == 0)) { | |
999 | if (!value || !*value) { | |
50c2f753 SF |
1000 | printk(KERN_WARNING "CIFS: invalid path to " |
1001 | "network resource\n"); | |
1da177e4 LT |
1002 | return 1; /* needs_arg; */ |
1003 | } | |
1004 | if ((temp_len = strnlen(value, 300)) < 300) { | |
50c2f753 | 1005 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1006 | if (vol->UNC == NULL) |
1da177e4 | 1007 | return 1; |
50c2f753 | 1008 | strcpy(vol->UNC, value); |
1da177e4 LT |
1009 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1010 | vol->UNC[0] = '\\'; | |
1011 | vol->UNC[1] = '\\'; | |
50c2f753 | 1012 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
1da177e4 | 1013 | printk(KERN_WARNING |
50c2f753 SF |
1014 | "CIFS: UNC Path does not begin " |
1015 | "with // or \\\\ \n"); | |
1da177e4 LT |
1016 | return 1; |
1017 | } | |
1018 | } else { | |
1019 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1020 | return 1; | |
1021 | } | |
1022 | } else if ((strnicmp(data, "domain", 3) == 0) | |
1023 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
1024 | if (!value || !*value) { | |
1025 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
1026 | return 1; /* needs_arg; */ | |
1027 | } | |
1028 | /* BB are there cases in which a comma can be valid in | |
1029 | a domain name and need special handling? */ | |
3979877e | 1030 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
1031 | vol->domainname = value; |
1032 | cFYI(1, ("Domain name set")); | |
1033 | } else { | |
50c2f753 SF |
1034 | printk(KERN_WARNING "CIFS: domain name too " |
1035 | "long\n"); | |
1da177e4 LT |
1036 | return 1; |
1037 | } | |
50c2f753 SF |
1038 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
1039 | if (!value || !*value) { | |
1040 | printk(KERN_WARNING | |
1041 | "CIFS: invalid path prefix\n"); | |
1042 | return 1; /* needs_argument */ | |
1043 | } | |
1044 | if ((temp_len = strnlen(value, 1024)) < 1024) { | |
4523cc30 | 1045 | if (value[0] != '/') |
2fe87f02 | 1046 | temp_len++; /* missing leading slash */ |
50c2f753 SF |
1047 | vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); |
1048 | if (vol->prepath == NULL) | |
1049 | return 1; | |
4523cc30 | 1050 | if (value[0] != '/') { |
2fe87f02 | 1051 | vol->prepath[0] = '/'; |
50c2f753 | 1052 | strcpy(vol->prepath+1, value); |
2fe87f02 | 1053 | } else |
50c2f753 SF |
1054 | strcpy(vol->prepath, value); |
1055 | cFYI(1, ("prefix path %s", vol->prepath)); | |
1056 | } else { | |
1057 | printk(KERN_WARNING "CIFS: prefix too long\n"); | |
1058 | return 1; | |
1059 | } | |
1da177e4 LT |
1060 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
1061 | if (!value || !*value) { | |
63135e08 SF |
1062 | printk(KERN_WARNING "CIFS: invalid iocharset " |
1063 | "specified\n"); | |
1da177e4 LT |
1064 | return 1; /* needs_arg; */ |
1065 | } | |
1066 | if (strnlen(value, 65) < 65) { | |
50c2f753 | 1067 | if (strnicmp(value, "default", 7)) |
1da177e4 | 1068 | vol->iocharset = value; |
50c2f753 SF |
1069 | /* if iocharset not set then load_nls_default |
1070 | is used by caller */ | |
1071 | cFYI(1, ("iocharset set to %s", value)); | |
1da177e4 | 1072 | } else { |
63135e08 SF |
1073 | printk(KERN_WARNING "CIFS: iocharset name " |
1074 | "too long.\n"); | |
1da177e4 LT |
1075 | return 1; |
1076 | } | |
1077 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1078 | if (value && *value) { | |
1079 | vol->linux_uid = | |
1080 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1081 | vol->override_uid = 1; |
1da177e4 LT |
1082 | } |
1083 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1084 | if (value && *value) { | |
1085 | vol->linux_gid = | |
1086 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1087 | vol->override_gid = 1; |
1da177e4 LT |
1088 | } |
1089 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1090 | if (value && *value) { | |
1091 | vol->file_mode = | |
1092 | simple_strtoul(value, &value, 0); | |
1093 | } | |
1094 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1095 | if (value && *value) { | |
1096 | vol->dir_mode = | |
1097 | simple_strtoul(value, &value, 0); | |
1098 | } | |
1099 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1100 | if (value && *value) { | |
1101 | vol->dir_mode = | |
1102 | simple_strtoul(value, &value, 0); | |
1103 | } | |
1104 | } else if (strnicmp(data, "port", 4) == 0) { | |
1105 | if (value && *value) { | |
1106 | vol->port = | |
1107 | simple_strtoul(value, &value, 0); | |
1108 | } | |
1109 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1110 | if (value && *value) { | |
1111 | vol->rsize = | |
1112 | simple_strtoul(value, &value, 0); | |
1113 | } | |
1114 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1115 | if (value && *value) { | |
1116 | vol->wsize = | |
1117 | simple_strtoul(value, &value, 0); | |
1118 | } | |
1119 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1120 | if (value && *value) { | |
1121 | vol->sockopt = | |
1122 | simple_strtoul(value, &value, 0); | |
1123 | } | |
1124 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1125 | if (!value || !*value || (*value == ' ')) { | |
63135e08 | 1126 | cFYI(1, ("invalid (empty) netbiosname")); |
1da177e4 | 1127 | } else { |
50c2f753 SF |
1128 | memset(vol->source_rfc1001_name, 0x20, 15); |
1129 | for (i = 0; i < 15; i++) { | |
1130 | /* BB are there cases in which a comma can be | |
1da177e4 LT |
1131 | valid in this workstation netbios name (and need |
1132 | special handling)? */ | |
1133 | ||
1134 | /* We do not uppercase netbiosname for user */ | |
50c2f753 | 1135 | if (value[i] == 0) |
1da177e4 | 1136 | break; |
50c2f753 SF |
1137 | else |
1138 | vol->source_rfc1001_name[i] = | |
1139 | value[i]; | |
1da177e4 LT |
1140 | } |
1141 | /* The string has 16th byte zero still from | |
1142 | set at top of the function */ | |
50c2f753 SF |
1143 | if ((i == 15) && (value[i] != 0)) |
1144 | printk(KERN_WARNING "CIFS: netbiosname" | |
1145 | " longer than 15 truncated.\n"); | |
a10faeb2 SF |
1146 | } |
1147 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1148 | /* servernetbiosname specified override *SMBSERVER */ | |
1149 | if (!value || !*value || (*value == ' ')) { | |
467a8f8d | 1150 | cFYI(1, ("empty server netbiosname specified")); |
a10faeb2 SF |
1151 | } else { |
1152 | /* last byte, type, is 0x20 for servr type */ | |
50c2f753 | 1153 | memset(vol->target_rfc1001_name, 0x20, 16); |
a10faeb2 | 1154 | |
50c2f753 | 1155 | for (i = 0; i < 15; i++) { |
a10faeb2 | 1156 | /* BB are there cases in which a comma can be |
50c2f753 SF |
1157 | valid in this workstation netbios name |
1158 | (and need special handling)? */ | |
a10faeb2 | 1159 | |
50c2f753 SF |
1160 | /* user or mount helper must uppercase |
1161 | the netbiosname */ | |
1162 | if (value[i] == 0) | |
a10faeb2 SF |
1163 | break; |
1164 | else | |
50c2f753 SF |
1165 | vol->target_rfc1001_name[i] = |
1166 | value[i]; | |
a10faeb2 SF |
1167 | } |
1168 | /* The string has 16th byte zero still from | |
1169 | set at top of the function */ | |
50c2f753 SF |
1170 | if ((i == 15) && (value[i] != 0)) |
1171 | printk(KERN_WARNING "CIFS: server net" | |
1172 | "biosname longer than 15 truncated.\n"); | |
1da177e4 LT |
1173 | } |
1174 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1175 | /* ignore */ | |
1176 | } else if (strnicmp(data, "version", 3) == 0) { | |
1177 | /* ignore */ | |
50c2f753 | 1178 | } else if (strnicmp(data, "guest", 5) == 0) { |
1da177e4 LT |
1179 | /* ignore */ |
1180 | } else if (strnicmp(data, "rw", 2) == 0) { | |
4b18f2a9 | 1181 | vol->rw = true; |
1da177e4 LT |
1182 | } else if ((strnicmp(data, "suid", 4) == 0) || |
1183 | (strnicmp(data, "nosuid", 6) == 0) || | |
1184 | (strnicmp(data, "exec", 4) == 0) || | |
1185 | (strnicmp(data, "noexec", 6) == 0) || | |
1186 | (strnicmp(data, "nodev", 5) == 0) || | |
1187 | (strnicmp(data, "noauto", 6) == 0) || | |
1188 | (strnicmp(data, "dev", 3) == 0)) { | |
1189 | /* The mount tool or mount.cifs helper (if present) | |
50c2f753 SF |
1190 | uses these opts to set flags, and the flags are read |
1191 | by the kernel vfs layer before we get here (ie | |
1192 | before read super) so there is no point trying to | |
1193 | parse these options again and set anything and it | |
1194 | is ok to just ignore them */ | |
1da177e4 LT |
1195 | continue; |
1196 | } else if (strnicmp(data, "ro", 2) == 0) { | |
4b18f2a9 | 1197 | vol->rw = false; |
1da177e4 LT |
1198 | } else if (strnicmp(data, "hard", 4) == 0) { |
1199 | vol->retry = 1; | |
1200 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1201 | vol->retry = 0; | |
1202 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1203 | vol->noperm = 0; | |
1204 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1205 | vol->noperm = 1; | |
6a0b4824 SF |
1206 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1207 | vol->remap = 1; | |
1208 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1209 | vol->remap = 0; | |
50c2f753 SF |
1210 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1211 | vol->sfu_emul = 1; | |
1212 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1213 | vol->sfu_emul = 0; | |
ac67055e JA |
1214 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1215 | vol->posix_paths = 1; | |
1216 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1217 | vol->posix_paths = 0; | |
c18c842b SF |
1218 | } else if (strnicmp(data, "nounix", 6) == 0) { |
1219 | vol->no_linux_ext = 1; | |
1220 | } else if (strnicmp(data, "nolinux", 7) == 0) { | |
1221 | vol->no_linux_ext = 1; | |
50c2f753 | 1222 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
a10faeb2 | 1223 | (strnicmp(data, "ignorecase", 10) == 0)) { |
50c2f753 | 1224 | vol->nocase = 1; |
c46fa8ac SF |
1225 | } else if (strnicmp(data, "brl", 3) == 0) { |
1226 | vol->nobrl = 0; | |
50c2f753 | 1227 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1228 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1229 | vol->nobrl = 1; |
d3485d37 SF |
1230 | /* turn off mandatory locking in mode |
1231 | if remote locking is turned off since the | |
1232 | local vfs will do advisory */ | |
50c2f753 SF |
1233 | if (vol->file_mode == |
1234 | (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
d3485d37 | 1235 | vol->file_mode = S_IALLUGO; |
1da177e4 LT |
1236 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1237 | vol->setuids = 1; | |
1238 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1239 | vol->setuids = 0; | |
1240 | } else if (strnicmp(data, "nohard", 6) == 0) { | |
1241 | vol->retry = 0; | |
1242 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1243 | vol->retry = 1; | |
1244 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1245 | vol->intr = 0; | |
1246 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1247 | vol->intr = 1; | |
50c2f753 | 1248 | } else if (strnicmp(data, "serverino", 7) == 0) { |
1da177e4 | 1249 | vol->server_ino = 1; |
50c2f753 | 1250 | } else if (strnicmp(data, "noserverino", 9) == 0) { |
1da177e4 | 1251 | vol->server_ino = 0; |
50c2f753 | 1252 | } else if (strnicmp(data, "cifsacl", 7) == 0) { |
0a4b92c0 SF |
1253 | vol->cifs_acl = 1; |
1254 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1255 | vol->cifs_acl = 0; | |
50c2f753 | 1256 | } else if (strnicmp(data, "acl", 3) == 0) { |
1da177e4 | 1257 | vol->no_psx_acl = 0; |
50c2f753 | 1258 | } else if (strnicmp(data, "noacl", 5) == 0) { |
1da177e4 | 1259 | vol->no_psx_acl = 1; |
50c2f753 | 1260 | } else if (strnicmp(data, "sign", 4) == 0) { |
750d1151 SF |
1261 | vol->secFlg |= CIFSSEC_MUST_SIGN; |
1262 | /* } else if (strnicmp(data, "seal",4) == 0) { | |
1263 | vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
50c2f753 | 1264 | } else if (strnicmp(data, "direct", 6) == 0) { |
1da177e4 | 1265 | vol->direct_io = 1; |
50c2f753 | 1266 | } else if (strnicmp(data, "forcedirectio", 13) == 0) { |
1da177e4 | 1267 | vol->direct_io = 1; |
50c2f753 | 1268 | } else if (strnicmp(data, "in6_addr", 8) == 0) { |
1da177e4 LT |
1269 | if (!value || !*value) { |
1270 | vol->in6_addr = NULL; | |
1271 | } else if (strnlen(value, 49) == 48) { | |
1272 | vol->in6_addr = value; | |
1273 | } else { | |
50c2f753 SF |
1274 | printk(KERN_WARNING "CIFS: ip v6 address not " |
1275 | "48 characters long\n"); | |
1da177e4 LT |
1276 | return 1; |
1277 | } | |
1278 | } else if (strnicmp(data, "noac", 4) == 0) { | |
50c2f753 SF |
1279 | printk(KERN_WARNING "CIFS: Mount option noac not " |
1280 | "supported. Instead set " | |
1281 | "/proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1da177e4 | 1282 | } else |
50c2f753 SF |
1283 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n", |
1284 | data); | |
1da177e4 LT |
1285 | } |
1286 | if (vol->UNC == NULL) { | |
4523cc30 | 1287 | if (devname == NULL) { |
50c2f753 SF |
1288 | printk(KERN_WARNING "CIFS: Missing UNC name for mount " |
1289 | "target\n"); | |
1da177e4 LT |
1290 | return 1; |
1291 | } | |
1292 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
50c2f753 | 1293 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1294 | if (vol->UNC == NULL) |
1da177e4 | 1295 | return 1; |
50c2f753 | 1296 | strcpy(vol->UNC, devname); |
1da177e4 LT |
1297 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1298 | vol->UNC[0] = '\\'; | |
1299 | vol->UNC[1] = '\\'; | |
1300 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
50c2f753 SF |
1301 | printk(KERN_WARNING "CIFS: UNC Path does not " |
1302 | "begin with // or \\\\ \n"); | |
1da177e4 LT |
1303 | return 1; |
1304 | } | |
7c5e628f IM |
1305 | value = strpbrk(vol->UNC+2, "/\\"); |
1306 | if (value) | |
1307 | *value = '\\'; | |
1da177e4 LT |
1308 | } else { |
1309 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1310 | return 1; | |
1311 | } | |
1312 | } | |
fb8c4b14 | 1313 | if (vol->UNCip == NULL) |
1da177e4 LT |
1314 | vol->UNCip = &vol->UNC[2]; |
1315 | ||
1316 | return 0; | |
1317 | } | |
1318 | ||
1319 | static struct cifsSesInfo * | |
50c2f753 | 1320 | cifs_find_tcp_session(struct in_addr *target_ip_addr, |
1da177e4 LT |
1321 | struct in6_addr *target_ip6_addr, |
1322 | char *userName, struct TCP_Server_Info **psrvTcp) | |
1323 | { | |
1324 | struct list_head *tmp; | |
1325 | struct cifsSesInfo *ses; | |
1326 | *psrvTcp = NULL; | |
1327 | read_lock(&GlobalSMBSeslock); | |
1328 | ||
1329 | list_for_each(tmp, &GlobalSMBSessionList) { | |
1330 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
1331 | if (ses->server) { | |
50c2f753 | 1332 | if ((target_ip_addr && |
1da177e4 LT |
1333 | (ses->server->addr.sockAddr.sin_addr.s_addr |
1334 | == target_ip_addr->s_addr)) || (target_ip6_addr | |
1335 | && memcmp(&ses->server->addr.sockAddr6.sin6_addr, | |
50c2f753 SF |
1336 | target_ip6_addr, sizeof(*target_ip6_addr)))) { |
1337 | /* BB lock server and tcp session and increment | |
1338 | use count here?? */ | |
1339 | ||
1340 | /* found a match on the TCP session */ | |
1341 | *psrvTcp = ses->server; | |
1342 | ||
1da177e4 LT |
1343 | /* BB check if reconnection needed */ |
1344 | if (strncmp | |
1345 | (ses->userName, userName, | |
1346 | MAX_USERNAME_SIZE) == 0){ | |
1347 | read_unlock(&GlobalSMBSeslock); | |
50c2f753 SF |
1348 | /* Found exact match on both TCP and |
1349 | SMB sessions */ | |
1350 | return ses; | |
1da177e4 LT |
1351 | } |
1352 | } | |
1353 | } | |
1354 | /* else tcp and smb sessions need reconnection */ | |
1355 | } | |
1356 | read_unlock(&GlobalSMBSeslock); | |
1357 | return NULL; | |
1358 | } | |
1359 | ||
1360 | static struct cifsTconInfo * | |
1361 | find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) | |
1362 | { | |
1363 | struct list_head *tmp; | |
1364 | struct cifsTconInfo *tcon; | |
dea570e0 | 1365 | __be32 old_ip; |
1da177e4 LT |
1366 | |
1367 | read_lock(&GlobalSMBSeslock); | |
dea570e0 | 1368 | |
1da177e4 | 1369 | list_for_each(tmp, &GlobalTreeConnectionList) { |
e466e487 | 1370 | cFYI(1, ("Next tcon")); |
1da177e4 | 1371 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); |
dea570e0 SF |
1372 | if (!tcon->ses || !tcon->ses->server) |
1373 | continue; | |
1374 | ||
1375 | old_ip = tcon->ses->server->addr.sockAddr.sin_addr.s_addr; | |
1376 | cFYI(1, ("old ip addr: %x == new ip %x ?", | |
1377 | old_ip, new_target_ip_addr)); | |
1378 | ||
1379 | if (old_ip != new_target_ip_addr) | |
1380 | continue; | |
1381 | ||
1382 | /* BB lock tcon, server, tcp session and increment use count? */ | |
1383 | /* found a match on the TCP session */ | |
1384 | /* BB check if reconnection needed */ | |
1385 | cFYI(1, ("IP match, old UNC: %s new: %s", | |
1386 | tcon->treeName, uncName)); | |
1387 | ||
1388 | if (strncmp(tcon->treeName, uncName, MAX_TREE_SIZE)) | |
1389 | continue; | |
1390 | ||
1391 | cFYI(1, ("and old usr: %s new: %s", | |
1392 | tcon->treeName, uncName)); | |
1393 | ||
1394 | if (strncmp(tcon->ses->userName, userName, MAX_USERNAME_SIZE)) | |
1395 | continue; | |
1396 | ||
1397 | /* matched smb session (user name) */ | |
1398 | read_unlock(&GlobalSMBSeslock); | |
1399 | return tcon; | |
1da177e4 | 1400 | } |
dea570e0 | 1401 | |
1da177e4 LT |
1402 | read_unlock(&GlobalSMBSeslock); |
1403 | return NULL; | |
1404 | } | |
1405 | ||
1406 | int | |
1407 | connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo, | |
737b758c SF |
1408 | const char *old_path, const struct nls_table *nls_codepage, |
1409 | int remap) | |
1da177e4 | 1410 | { |
366781c1 | 1411 | struct dfs_info3_param *referrals = NULL; |
1da177e4 LT |
1412 | unsigned int num_referrals; |
1413 | int rc = 0; | |
1414 | ||
50c2f753 | 1415 | rc = get_dfs_path(xid, pSesInfo, old_path, nls_codepage, |
737b758c | 1416 | &num_referrals, &referrals, remap); |
1da177e4 LT |
1417 | |
1418 | /* BB Add in code to: if valid refrl, if not ip address contact | |
50c2f753 | 1419 | the helper that resolves tcp names, mount to it, try to |
1da177e4 LT |
1420 | tcon to it unmount it if fail */ |
1421 | ||
f99d49ad | 1422 | kfree(referrals); |
1da177e4 LT |
1423 | |
1424 | return rc; | |
1425 | } | |
1426 | ||
1427 | int | |
50c2f753 SF |
1428 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, |
1429 | const struct nls_table *nls_codepage, unsigned int *pnum_referrals, | |
366781c1 | 1430 | struct dfs_info3_param **preferrals, int remap) |
1da177e4 LT |
1431 | { |
1432 | char *temp_unc; | |
1433 | int rc = 0; | |
366781c1 | 1434 | unsigned char *targetUNCs; |
1da177e4 LT |
1435 | |
1436 | *pnum_referrals = 0; | |
366781c1 | 1437 | *preferrals = NULL; |
1da177e4 LT |
1438 | |
1439 | if (pSesInfo->ipc_tid == 0) { | |
1440 | temp_unc = kmalloc(2 /* for slashes */ + | |
50c2f753 SF |
1441 | strnlen(pSesInfo->serverName, |
1442 | SERVER_NAME_LEN_WITH_NULL * 2) | |
1da177e4 LT |
1443 | + 1 + 4 /* slash IPC$ */ + 2, |
1444 | GFP_KERNEL); | |
1445 | if (temp_unc == NULL) | |
1446 | return -ENOMEM; | |
1447 | temp_unc[0] = '\\'; | |
1448 | temp_unc[1] = '\\'; | |
1449 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1450 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1451 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1452 | cFYI(1, | |
50c2f753 | 1453 | ("CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid)); |
1da177e4 LT |
1454 | kfree(temp_unc); |
1455 | } | |
1456 | if (rc == 0) | |
366781c1 | 1457 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, &targetUNCs, |
737b758c | 1458 | pnum_referrals, nls_codepage, remap); |
366781c1 SF |
1459 | /* BB map targetUNCs to dfs_info3 structures, here or |
1460 | in CIFSGetDFSRefer BB */ | |
1da177e4 LT |
1461 | |
1462 | return rc; | |
1463 | } | |
1464 | ||
1465 | /* See RFC1001 section 14 on representation of Netbios names */ | |
50c2f753 | 1466 | static void rfc1002mangle(char *target, char *source, unsigned int length) |
1da177e4 | 1467 | { |
50c2f753 | 1468 | unsigned int i, j; |
1da177e4 | 1469 | |
50c2f753 | 1470 | for (i = 0, j = 0; i < (length); i++) { |
1da177e4 LT |
1471 | /* mask a nibble at a time and encode */ |
1472 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1473 | target[j+1] = 'A' + (0x0F & source[i]); | |
50c2f753 | 1474 | j += 2; |
1da177e4 LT |
1475 | } |
1476 | ||
1477 | } | |
1478 | ||
1479 | ||
1480 | static int | |
50c2f753 SF |
1481 | ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, |
1482 | char *netbios_name, char *target_name) | |
1da177e4 LT |
1483 | { |
1484 | int rc = 0; | |
1485 | int connected = 0; | |
1486 | __be16 orig_port = 0; | |
1487 | ||
fb8c4b14 | 1488 | if (*csocket == NULL) { |
50c2f753 SF |
1489 | rc = sock_create_kern(PF_INET, SOCK_STREAM, |
1490 | IPPROTO_TCP, csocket); | |
1da177e4 | 1491 | if (rc < 0) { |
50c2f753 | 1492 | cERROR(1, ("Error %d creating socket", rc)); |
1da177e4 LT |
1493 | *csocket = NULL; |
1494 | return rc; | |
1495 | } else { | |
1496 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
467a8f8d | 1497 | cFYI(1, ("Socket created")); |
50c2f753 | 1498 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
1da177e4 LT |
1499 | } |
1500 | } | |
1501 | ||
1502 | psin_server->sin_family = AF_INET; | |
fb8c4b14 | 1503 | if (psin_server->sin_port) { /* user overrode default port */ |
1da177e4 LT |
1504 | rc = (*csocket)->ops->connect(*csocket, |
1505 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1506 | sizeof(struct sockaddr_in), 0); |
1da177e4 LT |
1507 | if (rc >= 0) |
1508 | connected = 1; | |
50c2f753 | 1509 | } |
1da177e4 | 1510 | |
fb8c4b14 | 1511 | if (!connected) { |
50c2f753 | 1512 | /* save original port so we can retry user specified port |
1da177e4 LT |
1513 | later if fall back ports fail this time */ |
1514 | orig_port = psin_server->sin_port; | |
1515 | ||
1516 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1517 | if (psin_server->sin_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1518 | psin_server->sin_port = htons(CIFS_PORT); |
1519 | ||
1520 | rc = (*csocket)->ops->connect(*csocket, | |
1521 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1522 | sizeof(struct sockaddr_in), 0); |
1da177e4 LT |
1523 | if (rc >= 0) |
1524 | connected = 1; | |
1525 | } | |
1526 | } | |
1527 | if (!connected) { | |
1528 | psin_server->sin_port = htons(RFC1001_PORT); | |
1529 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
50c2f753 | 1530 | psin_server, |
6345a3a8 | 1531 | sizeof(struct sockaddr_in), 0); |
50c2f753 | 1532 | if (rc >= 0) |
1da177e4 LT |
1533 | connected = 1; |
1534 | } | |
1535 | ||
1536 | /* give up here - unless we want to retry on different | |
1537 | protocol families some day */ | |
1538 | if (!connected) { | |
fb8c4b14 | 1539 | if (orig_port) |
1da177e4 | 1540 | psin_server->sin_port = orig_port; |
50c2f753 | 1541 | cFYI(1, ("Error %d connecting to server via ipv4", rc)); |
1da177e4 LT |
1542 | sock_release(*csocket); |
1543 | *csocket = NULL; | |
1544 | return rc; | |
1545 | } | |
50c2f753 SF |
1546 | /* Eventually check for other socket options to change from |
1547 | the default. sock_setsockopt not used because it expects | |
1da177e4 | 1548 | user space buffer */ |
50c2f753 SF |
1549 | cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", |
1550 | (*csocket)->sk->sk_sndbuf, | |
b387eaeb | 1551 | (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo)); |
1da177e4 | 1552 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; |
b387eaeb | 1553 | /* make the bufsizes depend on wsize/rsize and max requests */ |
fb8c4b14 | 1554 | if ((*csocket)->sk->sk_sndbuf < (200 * 1024)) |
b387eaeb | 1555 | (*csocket)->sk->sk_sndbuf = 200 * 1024; |
fb8c4b14 | 1556 | if ((*csocket)->sk->sk_rcvbuf < (140 * 1024)) |
b387eaeb | 1557 | (*csocket)->sk->sk_rcvbuf = 140 * 1024; |
1da177e4 LT |
1558 | |
1559 | /* send RFC1001 sessinit */ | |
fb8c4b14 | 1560 | if (psin_server->sin_port == htons(RFC1001_PORT)) { |
1da177e4 | 1561 | /* some servers require RFC1001 sessinit before sending |
50c2f753 | 1562 | negprot - BB check reconnection in case where second |
1da177e4 | 1563 | sessinit is sent but no second negprot */ |
50c2f753 SF |
1564 | struct rfc1002_session_packet *ses_init_buf; |
1565 | struct smb_hdr *smb_buf; | |
1566 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), | |
1567 | GFP_KERNEL); | |
fb8c4b14 | 1568 | if (ses_init_buf) { |
1da177e4 | 1569 | ses_init_buf->trailer.session_req.called_len = 32; |
fb8c4b14 | 1570 | if (target_name && (target_name[0] != 0)) { |
a10faeb2 SF |
1571 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, |
1572 | target_name, 16); | |
1573 | } else { | |
1574 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
50c2f753 | 1575 | DEFAULT_CIFS_CALLED_NAME, 16); |
a10faeb2 SF |
1576 | } |
1577 | ||
1da177e4 LT |
1578 | ses_init_buf->trailer.session_req.calling_len = 32; |
1579 | /* calling name ends in null (byte 16) from old smb | |
1580 | convention. */ | |
50c2f753 | 1581 | if (netbios_name && (netbios_name[0] != 0)) { |
1da177e4 | 1582 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, |
50c2f753 | 1583 | netbios_name, 16); |
1da177e4 LT |
1584 | } else { |
1585 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
50c2f753 | 1586 | "LINUX_CIFS_CLNT", 16); |
1da177e4 LT |
1587 | } |
1588 | ses_init_buf->trailer.session_req.scope1 = 0; | |
1589 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1590 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1591 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1592 | smb_buf->smb_buf_length = 0x81000044; | |
1593 | rc = smb_send(*csocket, smb_buf, 0x44, | |
1594 | (struct sockaddr *)psin_server); | |
1595 | kfree(ses_init_buf); | |
50c2f753 | 1596 | msleep(1); /* RFC1001 layer in at least one server |
083d3a2c SF |
1597 | requires very short break before negprot |
1598 | presumably because not expecting negprot | |
1599 | to follow so fast. This is a simple | |
50c2f753 | 1600 | solution that works without |
083d3a2c SF |
1601 | complicating the code and causes no |
1602 | significant slowing down on mount | |
1603 | for everyone else */ | |
1da177e4 | 1604 | } |
50c2f753 | 1605 | /* else the negprot may still work without this |
1da177e4 | 1606 | even though malloc failed */ |
50c2f753 | 1607 | |
1da177e4 | 1608 | } |
50c2f753 | 1609 | |
1da177e4 LT |
1610 | return rc; |
1611 | } | |
1612 | ||
1613 | static int | |
1614 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket) | |
1615 | { | |
1616 | int rc = 0; | |
1617 | int connected = 0; | |
1618 | __be16 orig_port = 0; | |
1619 | ||
fb8c4b14 | 1620 | if (*csocket == NULL) { |
50c2f753 SF |
1621 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, |
1622 | IPPROTO_TCP, csocket); | |
1da177e4 | 1623 | if (rc < 0) { |
50c2f753 | 1624 | cERROR(1, ("Error %d creating ipv6 socket", rc)); |
1da177e4 LT |
1625 | *csocket = NULL; |
1626 | return rc; | |
1627 | } else { | |
1628 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
fb8c4b14 | 1629 | cFYI(1, ("ipv6 Socket created")); |
1da177e4 LT |
1630 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
1631 | } | |
1632 | } | |
1633 | ||
1634 | psin_server->sin6_family = AF_INET6; | |
1635 | ||
fb8c4b14 | 1636 | if (psin_server->sin6_port) { /* user overrode default port */ |
1da177e4 LT |
1637 | rc = (*csocket)->ops->connect(*csocket, |
1638 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1639 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1640 | if (rc >= 0) |
1641 | connected = 1; | |
50c2f753 | 1642 | } |
1da177e4 | 1643 | |
fb8c4b14 | 1644 | if (!connected) { |
50c2f753 | 1645 | /* save original port so we can retry user specified port |
1da177e4 LT |
1646 | later if fall back ports fail this time */ |
1647 | ||
1648 | orig_port = psin_server->sin6_port; | |
1649 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1650 | if (psin_server->sin6_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1651 | psin_server->sin6_port = htons(CIFS_PORT); |
1652 | ||
1653 | rc = (*csocket)->ops->connect(*csocket, | |
1654 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1655 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1656 | if (rc >= 0) |
1657 | connected = 1; | |
1658 | } | |
1659 | } | |
1660 | if (!connected) { | |
1661 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1662 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
6345a3a8 | 1663 | psin_server, sizeof(struct sockaddr_in6), 0); |
50c2f753 | 1664 | if (rc >= 0) |
1da177e4 LT |
1665 | connected = 1; |
1666 | } | |
1667 | ||
1668 | /* give up here - unless we want to retry on different | |
1669 | protocol families some day */ | |
1670 | if (!connected) { | |
fb8c4b14 | 1671 | if (orig_port) |
1da177e4 | 1672 | psin_server->sin6_port = orig_port; |
50c2f753 | 1673 | cFYI(1, ("Error %d connecting to server via ipv6", rc)); |
1da177e4 LT |
1674 | sock_release(*csocket); |
1675 | *csocket = NULL; | |
1676 | return rc; | |
1677 | } | |
50c2f753 SF |
1678 | /* Eventually check for other socket options to change from |
1679 | the default. sock_setsockopt not used because it expects | |
1da177e4 LT |
1680 | user space buffer */ |
1681 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
50c2f753 | 1682 | |
1da177e4 LT |
1683 | return rc; |
1684 | } | |
1685 | ||
50c2f753 SF |
1686 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon, |
1687 | struct super_block *sb, struct smb_vol *vol_info) | |
8af18971 SF |
1688 | { |
1689 | /* if we are reconnecting then should we check to see if | |
1690 | * any requested capabilities changed locally e.g. via | |
1691 | * remount but we can not do much about it here | |
1692 | * if they have (even if we could detect it by the following) | |
1693 | * Perhaps we could add a backpointer to array of sb from tcon | |
1694 | * or if we change to make all sb to same share the same | |
1695 | * sb as NFS - then we only have one backpointer to sb. | |
1696 | * What if we wanted to mount the server share twice once with | |
1697 | * and once without posixacls or posix paths? */ | |
1698 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
50c2f753 | 1699 | |
c18c842b SF |
1700 | if (vol_info && vol_info->no_linux_ext) { |
1701 | tcon->fsUnixInfo.Capability = 0; | |
1702 | tcon->unix_ext = 0; /* Unix Extensions disabled */ | |
1703 | cFYI(1, ("Linux protocol extensions disabled")); | |
1704 | return; | |
1705 | } else if (vol_info) | |
1706 | tcon->unix_ext = 1; /* Unix Extensions supported */ | |
1707 | ||
1708 | if (tcon->unix_ext == 0) { | |
1709 | cFYI(1, ("Unix extensions disabled so not set on reconnect")); | |
1710 | return; | |
1711 | } | |
50c2f753 | 1712 | |
fb8c4b14 | 1713 | if (!CIFSSMBQFSUnixInfo(xid, tcon)) { |
8af18971 | 1714 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
50c2f753 | 1715 | |
8af18971 SF |
1716 | /* check for reconnect case in which we do not |
1717 | want to change the mount behavior if we can avoid it */ | |
fb8c4b14 | 1718 | if (vol_info == NULL) { |
50c2f753 | 1719 | /* turn off POSIX ACL and PATHNAMES if not set |
8af18971 SF |
1720 | originally at mount time */ |
1721 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) | |
1722 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
11b6d645 IM |
1723 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1724 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) | |
1725 | cERROR(1, ("POSIXPATH support change")); | |
8af18971 | 1726 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
11b6d645 IM |
1727 | } else if ((cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1728 | cERROR(1, ("possible reconnect error")); | |
1729 | cERROR(1, | |
1730 | ("server disabled POSIX path support")); | |
1731 | } | |
8af18971 | 1732 | } |
50c2f753 | 1733 | |
8af18971 | 1734 | cap &= CIFS_UNIX_CAP_MASK; |
75865f8c | 1735 | if (vol_info && vol_info->no_psx_acl) |
8af18971 | 1736 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
75865f8c | 1737 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
fb8c4b14 SF |
1738 | cFYI(1, ("negotiated posix acl support")); |
1739 | if (sb) | |
8af18971 SF |
1740 | sb->s_flags |= MS_POSIXACL; |
1741 | } | |
1742 | ||
75865f8c | 1743 | if (vol_info && vol_info->posix_paths == 0) |
8af18971 | 1744 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
75865f8c | 1745 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
fb8c4b14 | 1746 | cFYI(1, ("negotiate posix pathnames")); |
75865f8c | 1747 | if (sb) |
50c2f753 | 1748 | CIFS_SB(sb)->mnt_cifs_flags |= |
8af18971 SF |
1749 | CIFS_MOUNT_POSIX_PATHS; |
1750 | } | |
50c2f753 | 1751 | |
984acfe1 SF |
1752 | /* We might be setting the path sep back to a different |
1753 | form if we are reconnecting and the server switched its | |
50c2f753 | 1754 | posix path capability for this share */ |
75865f8c | 1755 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
984acfe1 | 1756 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
75865f8c SF |
1757 | |
1758 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { | |
1759 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { | |
1760 | CIFS_SB(sb)->rsize = 127 * 1024; | |
90c81e0b SF |
1761 | cFYI(DBG2, |
1762 | ("larger reads not supported by srv")); | |
75865f8c SF |
1763 | } |
1764 | } | |
50c2f753 SF |
1765 | |
1766 | ||
1767 | cFYI(1, ("Negotiate caps 0x%x", (int)cap)); | |
8af18971 | 1768 | #ifdef CONFIG_CIFS_DEBUG2 |
75865f8c | 1769 | if (cap & CIFS_UNIX_FCNTL_CAP) |
fb8c4b14 | 1770 | cFYI(1, ("FCNTL cap")); |
75865f8c | 1771 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
fb8c4b14 | 1772 | cFYI(1, ("EXTATTR cap")); |
75865f8c | 1773 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
fb8c4b14 | 1774 | cFYI(1, ("POSIX path cap")); |
75865f8c | 1775 | if (cap & CIFS_UNIX_XATTR_CAP) |
fb8c4b14 | 1776 | cFYI(1, ("XATTR cap")); |
75865f8c | 1777 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
fb8c4b14 | 1778 | cFYI(1, ("POSIX ACL cap")); |
75865f8c | 1779 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
fb8c4b14 | 1780 | cFYI(1, ("very large read cap")); |
75865f8c | 1781 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) |
fb8c4b14 | 1782 | cFYI(1, ("very large write cap")); |
8af18971 SF |
1783 | #endif /* CIFS_DEBUG2 */ |
1784 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
442aa310 | 1785 | if (vol_info == NULL) { |
5a44b319 | 1786 | cFYI(1, ("resetting capabilities failed")); |
442aa310 | 1787 | } else |
5a44b319 SF |
1788 | cERROR(1, ("Negotiating Unix capabilities " |
1789 | "with the server failed. Consider " | |
1790 | "mounting with the Unix Extensions\n" | |
1791 | "disabled, if problems are found, " | |
1792 | "by specifying the nounix mount " | |
2224f4e5 | 1793 | "option.")); |
5a44b319 | 1794 | |
8af18971 SF |
1795 | } |
1796 | } | |
1797 | } | |
1798 | ||
03a143c9 SF |
1799 | static void |
1800 | convert_delimiter(char *path, char delim) | |
1801 | { | |
1802 | int i; | |
c2d68ea6 | 1803 | char old_delim; |
03a143c9 SF |
1804 | |
1805 | if (path == NULL) | |
1806 | return; | |
1807 | ||
c2d68ea6 SF |
1808 | if (delim == '/') |
1809 | old_delim = '\\'; | |
1810 | else | |
1811 | old_delim = '/'; | |
1812 | ||
03a143c9 | 1813 | for (i = 0; path[i] != '\0'; i++) { |
c2d68ea6 | 1814 | if (path[i] == old_delim) |
03a143c9 SF |
1815 | path[i] = delim; |
1816 | } | |
1817 | } | |
1818 | ||
1da177e4 LT |
1819 | int |
1820 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1821 | char *mount_data, const char *devname) | |
1822 | { | |
1823 | int rc = 0; | |
1824 | int xid; | |
1825 | int address_type = AF_INET; | |
1826 | struct socket *csocket = NULL; | |
1827 | struct sockaddr_in sin_server; | |
1828 | struct sockaddr_in6 sin_server6; | |
1829 | struct smb_vol volume_info; | |
1830 | struct cifsSesInfo *pSesInfo = NULL; | |
1831 | struct cifsSesInfo *existingCifsSes = NULL; | |
1832 | struct cifsTconInfo *tcon = NULL; | |
1833 | struct TCP_Server_Info *srvTcp = NULL; | |
1834 | ||
1835 | xid = GetXid(); | |
1836 | ||
1837 | /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ | |
50c2f753 SF |
1838 | |
1839 | memset(&volume_info, 0, sizeof(struct smb_vol)); | |
1da177e4 | 1840 | if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { |
70fe7dc0 JL |
1841 | rc = -EINVAL; |
1842 | goto out; | |
1da177e4 LT |
1843 | } |
1844 | ||
8426c39c | 1845 | if (volume_info.nullauth) { |
fb8c4b14 | 1846 | cFYI(1, ("null user")); |
9b8f5f57 | 1847 | volume_info.username = ""; |
8426c39c | 1848 | } else if (volume_info.username) { |
1da177e4 | 1849 | /* BB fixme parse for domain name here */ |
467a8f8d | 1850 | cFYI(1, ("Username: %s", volume_info.username)); |
1da177e4 | 1851 | } else { |
bf820679 | 1852 | cifserror("No username specified"); |
50c2f753 SF |
1853 | /* In userspace mount helper we can get user name from alternate |
1854 | locations such as env variables and files on disk */ | |
70fe7dc0 JL |
1855 | rc = -EINVAL; |
1856 | goto out; | |
1da177e4 LT |
1857 | } |
1858 | ||
1859 | if (volume_info.UNCip && volume_info.UNC) { | |
50c2f753 SF |
1860 | rc = cifs_inet_pton(AF_INET, volume_info.UNCip, |
1861 | &sin_server.sin_addr.s_addr); | |
1da177e4 | 1862 | |
fb8c4b14 | 1863 | if (rc <= 0) { |
1da177e4 | 1864 | /* not ipv4 address, try ipv6 */ |
50c2f753 SF |
1865 | rc = cifs_inet_pton(AF_INET6, volume_info.UNCip, |
1866 | &sin_server6.sin6_addr.in6_u); | |
fb8c4b14 | 1867 | if (rc > 0) |
1da177e4 LT |
1868 | address_type = AF_INET6; |
1869 | } else { | |
1870 | address_type = AF_INET; | |
1871 | } | |
50c2f753 | 1872 | |
fb8c4b14 | 1873 | if (rc <= 0) { |
1da177e4 | 1874 | /* we failed translating address */ |
70fe7dc0 JL |
1875 | rc = -EINVAL; |
1876 | goto out; | |
1da177e4 LT |
1877 | } |
1878 | ||
1879 | cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); | |
1880 | /* success */ | |
1881 | rc = 0; | |
50c2f753 SF |
1882 | } else if (volume_info.UNCip) { |
1883 | /* BB using ip addr as server name to connect to the | |
1884 | DFS root below */ | |
1885 | cERROR(1, ("Connecting to DFS root not implemented yet")); | |
70fe7dc0 JL |
1886 | rc = -EINVAL; |
1887 | goto out; | |
1da177e4 LT |
1888 | } else /* which servers DFS root would we conect to */ { |
1889 | cERROR(1, | |
50c2f753 SF |
1890 | ("CIFS mount error: No UNC path (e.g. -o " |
1891 | "unc=//192.168.1.100/public) specified")); | |
70fe7dc0 JL |
1892 | rc = -EINVAL; |
1893 | goto out; | |
1da177e4 LT |
1894 | } |
1895 | ||
1896 | /* this is needed for ASCII cp to Unicode converts */ | |
fb8c4b14 | 1897 | if (volume_info.iocharset == NULL) { |
1da177e4 LT |
1898 | cifs_sb->local_nls = load_nls_default(); |
1899 | /* load_nls_default can not return null */ | |
1900 | } else { | |
1901 | cifs_sb->local_nls = load_nls(volume_info.iocharset); | |
fb8c4b14 | 1902 | if (cifs_sb->local_nls == NULL) { |
50c2f753 SF |
1903 | cERROR(1, ("CIFS mount error: iocharset %s not found", |
1904 | volume_info.iocharset)); | |
70fe7dc0 JL |
1905 | rc = -ELIBACC; |
1906 | goto out; | |
1da177e4 LT |
1907 | } |
1908 | } | |
1909 | ||
fb8c4b14 | 1910 | if (address_type == AF_INET) |
1da177e4 LT |
1911 | existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr, |
1912 | NULL /* no ipv6 addr */, | |
1913 | volume_info.username, &srvTcp); | |
fb8c4b14 SF |
1914 | else if (address_type == AF_INET6) { |
1915 | cFYI(1, ("looking for ipv6 address")); | |
1da177e4 LT |
1916 | existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */, |
1917 | &sin_server6.sin6_addr, | |
1918 | volume_info.username, &srvTcp); | |
5858ae44 | 1919 | } else { |
70fe7dc0 JL |
1920 | rc = -EINVAL; |
1921 | goto out; | |
1da177e4 LT |
1922 | } |
1923 | ||
1da177e4 | 1924 | if (srvTcp) { |
50c2f753 | 1925 | cFYI(1, ("Existing tcp session with server found")); |
1da177e4 | 1926 | } else { /* create socket */ |
4523cc30 | 1927 | if (volume_info.port) |
1da177e4 LT |
1928 | sin_server.sin_port = htons(volume_info.port); |
1929 | else | |
1930 | sin_server.sin_port = 0; | |
5858ae44 | 1931 | if (address_type == AF_INET6) { |
fb8c4b14 | 1932 | cFYI(1, ("attempting ipv6 connect")); |
5858ae44 SF |
1933 | /* BB should we allow ipv6 on port 139? */ |
1934 | /* other OS never observed in Wild doing 139 with v6 */ | |
50c2f753 SF |
1935 | rc = ipv6_connect(&sin_server6, &csocket); |
1936 | } else | |
1937 | rc = ipv4_connect(&sin_server, &csocket, | |
a10faeb2 SF |
1938 | volume_info.source_rfc1001_name, |
1939 | volume_info.target_rfc1001_name); | |
1da177e4 | 1940 | if (rc < 0) { |
50c2f753 SF |
1941 | cERROR(1, ("Error connecting to IPv4 socket. " |
1942 | "Aborting operation")); | |
4523cc30 | 1943 | if (csocket != NULL) |
1da177e4 | 1944 | sock_release(csocket); |
70fe7dc0 | 1945 | goto out; |
1da177e4 LT |
1946 | } |
1947 | ||
a8a11d39 MK |
1948 | srvTcp = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); |
1949 | if (!srvTcp) { | |
1da177e4 LT |
1950 | rc = -ENOMEM; |
1951 | sock_release(csocket); | |
70fe7dc0 | 1952 | goto out; |
1da177e4 | 1953 | } else { |
50c2f753 | 1954 | memcpy(&srvTcp->addr.sockAddr, &sin_server, |
6345a3a8 | 1955 | sizeof(struct sockaddr_in)); |
50c2f753 | 1956 | atomic_set(&srvTcp->inFlight, 0); |
1da177e4 LT |
1957 | /* BB Add code for ipv6 case too */ |
1958 | srvTcp->ssocket = csocket; | |
1959 | srvTcp->protocolType = IPV4; | |
c359cf3c JL |
1960 | srvTcp->hostname = extract_hostname(volume_info.UNC); |
1961 | if (IS_ERR(srvTcp->hostname)) { | |
1962 | rc = PTR_ERR(srvTcp->hostname); | |
1963 | sock_release(csocket); | |
1964 | goto out; | |
1965 | } | |
1da177e4 LT |
1966 | init_waitqueue_head(&srvTcp->response_q); |
1967 | init_waitqueue_head(&srvTcp->request_q); | |
1968 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
1969 | /* at this point we are the only ones with the pointer | |
1970 | to the struct since the kernel thread not created yet | |
1971 | so no need to spinlock this init of tcpStatus */ | |
1972 | srvTcp->tcpStatus = CifsNew; | |
1973 | init_MUTEX(&srvTcp->tcpSem); | |
aaf737ad | 1974 | srvTcp->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, srvTcp, "cifsd"); |
8840dee9 | 1975 | if (IS_ERR(srvTcp->tsk)) { |
aaf737ad | 1976 | rc = PTR_ERR(srvTcp->tsk); |
50c2f753 | 1977 | cERROR(1, ("error %d create cifsd thread", rc)); |
aaf737ad | 1978 | srvTcp->tsk = NULL; |
1da177e4 | 1979 | sock_release(csocket); |
c359cf3c | 1980 | kfree(srvTcp->hostname); |
70fe7dc0 | 1981 | goto out; |
f191401f | 1982 | } |
f191401f | 1983 | rc = 0; |
50c2f753 SF |
1984 | memcpy(srvTcp->workstation_RFC1001_name, |
1985 | volume_info.source_rfc1001_name, 16); | |
1986 | memcpy(srvTcp->server_RFC1001_name, | |
1987 | volume_info.target_rfc1001_name, 16); | |
ad009ac9 | 1988 | srvTcp->sequence_number = 0; |
1da177e4 LT |
1989 | } |
1990 | } | |
1991 | ||
1992 | if (existingCifsSes) { | |
1993 | pSesInfo = existingCifsSes; | |
1d9a8852 JL |
1994 | cFYI(1, ("Existing smb sess found (status=%d)", |
1995 | pSesInfo->status)); | |
88e7d705 | 1996 | down(&pSesInfo->sesSem); |
1d9a8852 JL |
1997 | if (pSesInfo->status == CifsNeedReconnect) { |
1998 | cFYI(1, ("Session needs reconnect")); | |
1d9a8852 JL |
1999 | rc = cifs_setup_session(xid, pSesInfo, |
2000 | cifs_sb->local_nls); | |
1d9a8852 | 2001 | } |
88e7d705 | 2002 | up(&pSesInfo->sesSem); |
1da177e4 | 2003 | } else if (!rc) { |
bf820679 | 2004 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 LT |
2005 | pSesInfo = sesInfoAlloc(); |
2006 | if (pSesInfo == NULL) | |
2007 | rc = -ENOMEM; | |
2008 | else { | |
2009 | pSesInfo->server = srvTcp; | |
2010 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
2011 | NIPQUAD(sin_server.sin_addr.s_addr)); | |
2012 | } | |
2013 | ||
50c2f753 SF |
2014 | if (!rc) { |
2015 | /* volume_info.password freed at unmount */ | |
70fe7dc0 | 2016 | if (volume_info.password) { |
1da177e4 | 2017 | pSesInfo->password = volume_info.password; |
70fe7dc0 JL |
2018 | /* set to NULL to prevent freeing on exit */ |
2019 | volume_info.password = NULL; | |
2020 | } | |
1da177e4 LT |
2021 | if (volume_info.username) |
2022 | strncpy(pSesInfo->userName, | |
50c2f753 SF |
2023 | volume_info.username, |
2024 | MAX_USERNAME_SIZE); | |
3979877e SF |
2025 | if (volume_info.domainname) { |
2026 | int len = strlen(volume_info.domainname); | |
50c2f753 | 2027 | pSesInfo->domainName = |
3979877e | 2028 | kmalloc(len + 1, GFP_KERNEL); |
4523cc30 | 2029 | if (pSesInfo->domainName) |
3979877e SF |
2030 | strcpy(pSesInfo->domainName, |
2031 | volume_info.domainname); | |
2032 | } | |
1da177e4 | 2033 | pSesInfo->linux_uid = volume_info.linux_uid; |
750d1151 | 2034 | pSesInfo->overrideSecFlg = volume_info.secFlg; |
1da177e4 | 2035 | down(&pSesInfo->sesSem); |
189acaae | 2036 | /* BB FIXME need to pass vol->secFlgs BB */ |
50c2f753 SF |
2037 | rc = cifs_setup_session(xid, pSesInfo, |
2038 | cifs_sb->local_nls); | |
1da177e4 | 2039 | up(&pSesInfo->sesSem); |
4523cc30 | 2040 | if (!rc) |
1da177e4 | 2041 | atomic_inc(&srvTcp->socketUseCount); |
70fe7dc0 | 2042 | } |
1da177e4 | 2043 | } |
50c2f753 | 2044 | |
1da177e4 LT |
2045 | /* search for existing tcon to this server share */ |
2046 | if (!rc) { | |
4523cc30 | 2047 | if (volume_info.rsize > CIFSMaxBufSize) { |
50c2f753 | 2048 | cERROR(1, ("rsize %d too large, using MaxBufSize", |
0ae0efad SF |
2049 | volume_info.rsize)); |
2050 | cifs_sb->rsize = CIFSMaxBufSize; | |
75865f8c SF |
2051 | } else if ((volume_info.rsize) && |
2052 | (volume_info.rsize <= CIFSMaxBufSize)) | |
1da177e4 | 2053 | cifs_sb->rsize = volume_info.rsize; |
0ae0efad SF |
2054 | else /* default */ |
2055 | cifs_sb->rsize = CIFSMaxBufSize; | |
2056 | ||
4523cc30 | 2057 | if (volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { |
50c2f753 | 2058 | cERROR(1, ("wsize %d too large, using 4096 instead", |
0ae0efad SF |
2059 | volume_info.wsize)); |
2060 | cifs_sb->wsize = 4096; | |
4523cc30 | 2061 | } else if (volume_info.wsize) |
1da177e4 LT |
2062 | cifs_sb->wsize = volume_info.wsize; |
2063 | else | |
50c2f753 | 2064 | cifs_sb->wsize = |
1877c9ea SF |
2065 | min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE, |
2066 | 127*1024); | |
17cbbafe | 2067 | /* old default of CIFSMaxBufSize was too small now |
50c2f753 | 2068 | that SMB Write2 can send multiple pages in kvec. |
17cbbafe SF |
2069 | RFC1001 does not describe what happens when frame |
2070 | bigger than 128K is sent so use that as max in | |
2071 | conjunction with 52K kvec constraint on arch with 4K | |
2072 | page size */ | |
2073 | ||
4523cc30 | 2074 | if (cifs_sb->rsize < 2048) { |
50c2f753 | 2075 | cifs_sb->rsize = 2048; |
6cec2aed | 2076 | /* Windows ME may prefer this */ |
467a8f8d | 2077 | cFYI(1, ("readsize set to minimum: 2048")); |
1da177e4 | 2078 | } |
2fe87f02 SF |
2079 | /* calculate prepath */ |
2080 | cifs_sb->prepath = volume_info.prepath; | |
4523cc30 | 2081 | if (cifs_sb->prepath) { |
2fe87f02 | 2082 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); |
03a143c9 SF |
2083 | /* we can not convert the / to \ in the path |
2084 | separators in the prefixpath yet because we do not | |
2085 | know (until reset_cifs_unix_caps is called later) | |
2086 | whether POSIX PATH CAP is available. We normalize | |
2087 | the / to \ after reset_cifs_unix_caps is called */ | |
2fe87f02 | 2088 | volume_info.prepath = NULL; |
50c2f753 | 2089 | } else |
2fe87f02 | 2090 | cifs_sb->prepathlen = 0; |
1da177e4 LT |
2091 | cifs_sb->mnt_uid = volume_info.linux_uid; |
2092 | cifs_sb->mnt_gid = volume_info.linux_gid; | |
2093 | cifs_sb->mnt_file_mode = volume_info.file_mode; | |
2094 | cifs_sb->mnt_dir_mode = volume_info.dir_mode; | |
467a8f8d SF |
2095 | cFYI(1, ("file mode: 0x%x dir mode: 0x%x", |
2096 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode)); | |
1da177e4 | 2097 | |
4523cc30 | 2098 | if (volume_info.noperm) |
1da177e4 | 2099 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; |
4523cc30 | 2100 | if (volume_info.setuids) |
1da177e4 | 2101 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; |
4523cc30 | 2102 | if (volume_info.server_ino) |
1da177e4 | 2103 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; |
4523cc30 | 2104 | if (volume_info.remap) |
6a0b4824 | 2105 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; |
4523cc30 | 2106 | if (volume_info.no_xattr) |
1da177e4 | 2107 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; |
4523cc30 | 2108 | if (volume_info.sfu_emul) |
d7245c2c | 2109 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; |
4523cc30 | 2110 | if (volume_info.nobrl) |
c46fa8ac | 2111 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; |
4523cc30 | 2112 | if (volume_info.cifs_acl) |
0a4b92c0 | 2113 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; |
4523cc30 SF |
2114 | if (volume_info.override_uid) |
2115 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; | |
2116 | if (volume_info.override_gid) | |
2117 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; | |
2118 | if (volume_info.direct_io) { | |
467a8f8d | 2119 | cFYI(1, ("mounting share using direct i/o")); |
1da177e4 LT |
2120 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
2121 | } | |
2122 | ||
2123 | tcon = | |
2124 | find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, | |
2125 | volume_info.username); | |
2126 | if (tcon) { | |
bf820679 | 2127 | cFYI(1, ("Found match on UNC path")); |
1da177e4 LT |
2128 | /* we can have only one retry value for a connection |
2129 | to a share so for resources mounted more than once | |
50c2f753 | 2130 | to the same server share the last value passed in |
1da177e4 LT |
2131 | for the retry flag is used */ |
2132 | tcon->retry = volume_info.retry; | |
d3485d37 | 2133 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
2134 | } else { |
2135 | tcon = tconInfoAlloc(); | |
2136 | if (tcon == NULL) | |
2137 | rc = -ENOMEM; | |
2138 | else { | |
50c2f753 | 2139 | /* check for null share name ie connecting to |
8af18971 | 2140 | * dfs root */ |
1da177e4 | 2141 | |
50c2f753 | 2142 | /* BB check if this works for exactly length |
8af18971 | 2143 | * three strings */ |
1da177e4 LT |
2144 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) |
2145 | && (strchr(volume_info.UNC + 3, '/') == | |
2146 | NULL)) { | |
737b758c | 2147 | rc = connect_to_dfs_path(xid, pSesInfo, |
8af18971 | 2148 | "", cifs_sb->local_nls, |
50c2f753 | 2149 | cifs_sb->mnt_cifs_flags & |
8af18971 | 2150 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
70fe7dc0 JL |
2151 | rc = -ENODEV; |
2152 | goto out; | |
1da177e4 | 2153 | } else { |
8af18971 SF |
2154 | /* BB Do we need to wrap sesSem around |
2155 | * this TCon call and Unix SetFS as | |
2156 | * we do on SessSetup and reconnect? */ | |
50c2f753 | 2157 | rc = CIFSTCon(xid, pSesInfo, |
1da177e4 LT |
2158 | volume_info.UNC, |
2159 | tcon, cifs_sb->local_nls); | |
2160 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
2161 | } | |
2162 | if (!rc) { | |
2163 | atomic_inc(&pSesInfo->inUse); | |
2164 | tcon->retry = volume_info.retry; | |
d3485d37 | 2165 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
2166 | } |
2167 | } | |
2168 | } | |
2169 | } | |
4523cc30 | 2170 | if (pSesInfo) { |
1da177e4 LT |
2171 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
2172 | sb->s_maxbytes = (u64) 1 << 63; | |
2173 | } else | |
2174 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
2175 | } | |
2176 | ||
8af18971 | 2177 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
1da177e4 LT |
2178 | sb->s_time_gran = 100; |
2179 | ||
2180 | /* on error free sesinfo and tcon struct if needed */ | |
2181 | if (rc) { | |
2182 | /* if session setup failed, use count is zero but | |
2183 | we still need to free cifsd thread */ | |
4523cc30 | 2184 | if (atomic_read(&srvTcp->socketUseCount) == 0) { |
1da177e4 LT |
2185 | spin_lock(&GlobalMid_Lock); |
2186 | srvTcp->tcpStatus = CifsExiting; | |
2187 | spin_unlock(&GlobalMid_Lock); | |
4523cc30 | 2188 | if (srvTcp->tsk) { |
28356a16 SF |
2189 | struct task_struct *tsk; |
2190 | /* If we could verify that kthread_stop would | |
2191 | always wake up processes blocked in | |
2192 | tcp in recv_mesg then we could remove the | |
2193 | send_sig call */ | |
50c2f753 | 2194 | force_sig(SIGKILL, srvTcp->tsk); |
28356a16 | 2195 | tsk = srvTcp->tsk; |
fb8c4b14 | 2196 | if (tsk) |
f7f7c31c | 2197 | kthread_stop(tsk); |
f191401f | 2198 | } |
1da177e4 LT |
2199 | } |
2200 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
2201 | if (tcon) /* up accidently freeing someone elses tcon struct */ | |
2202 | tconInfoFree(tcon); | |
2203 | if (existingCifsSes == NULL) { | |
2204 | if (pSesInfo) { | |
50c2f753 | 2205 | if ((pSesInfo->server) && |
1da177e4 LT |
2206 | (pSesInfo->status == CifsGood)) { |
2207 | int temp_rc; | |
2208 | temp_rc = CIFSSMBLogoff(xid, pSesInfo); | |
2209 | /* if the socketUseCount is now zero */ | |
4523cc30 | 2210 | if ((temp_rc == -ESHUTDOWN) && |
50c2f753 | 2211 | (pSesInfo->server) && |
5d9c7206 | 2212 | (pSesInfo->server->tsk)) { |
28356a16 | 2213 | struct task_struct *tsk; |
5d9c7206 J |
2214 | force_sig(SIGKILL, |
2215 | pSesInfo->server->tsk); | |
28356a16 | 2216 | tsk = pSesInfo->server->tsk; |
f7f7c31c | 2217 | if (tsk) |
28356a16 | 2218 | kthread_stop(tsk); |
f191401f | 2219 | } |
a013689d | 2220 | } else { |
1da177e4 | 2221 | cFYI(1, ("No session or bad tcon")); |
a013689d SF |
2222 | if ((pSesInfo->server) && |
2223 | (pSesInfo->server->tsk)) { | |
2224 | struct task_struct *tsk; | |
2225 | force_sig(SIGKILL, | |
2226 | pSesInfo->server->tsk); | |
2227 | tsk = pSesInfo->server->tsk; | |
2228 | if (tsk) | |
2229 | kthread_stop(tsk); | |
2230 | } | |
2231 | } | |
1da177e4 LT |
2232 | sesInfoFree(pSesInfo); |
2233 | /* pSesInfo = NULL; */ | |
2234 | } | |
2235 | } | |
2236 | } else { | |
2237 | atomic_inc(&tcon->useCount); | |
2238 | cifs_sb->tcon = tcon; | |
2239 | tcon->ses = pSesInfo; | |
2240 | ||
82940a46 | 2241 | /* do not care if following two calls succeed - informational */ |
7f8ed420 SF |
2242 | if (!tcon->ipc) { |
2243 | CIFSSMBQFSDeviceInfo(xid, tcon); | |
2244 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
2245 | } | |
50c2f753 | 2246 | |
8af18971 SF |
2247 | /* tell server which Unix caps we support */ |
2248 | if (tcon->ses->capabilities & CAP_UNIX) | |
c18c842b SF |
2249 | /* reset of caps checks mount to see if unix extensions |
2250 | disabled for just this mount */ | |
8af18971 | 2251 | reset_cifs_unix_caps(xid, tcon, sb, &volume_info); |
c18c842b SF |
2252 | else |
2253 | tcon->unix_ext = 0; /* server does not support them */ | |
2254 | ||
03a143c9 | 2255 | /* convert forward to back slashes in prepath here if needed */ |
11b6d645 IM |
2256 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0) |
2257 | convert_delimiter(cifs_sb->prepath, | |
2258 | CIFS_DIR_SEP(cifs_sb)); | |
03a143c9 | 2259 | |
c18c842b | 2260 | if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) { |
75865f8c | 2261 | cifs_sb->rsize = 1024 * 127; |
90c81e0b SF |
2262 | cFYI(DBG2, |
2263 | ("no very large read support, rsize now 127K")); | |
75865f8c | 2264 | } |
3e84469d SF |
2265 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
2266 | cifs_sb->wsize = min(cifs_sb->wsize, | |
2267 | (tcon->ses->server->maxBuf - | |
2268 | MAX_CIFS_HDR_SIZE)); | |
0ae0efad | 2269 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
50c2f753 SF |
2270 | cifs_sb->rsize = min(cifs_sb->rsize, |
2271 | (tcon->ses->server->maxBuf - | |
2272 | MAX_CIFS_HDR_SIZE)); | |
1da177e4 LT |
2273 | } |
2274 | ||
2275 | /* volume_info.password is freed above when existing session found | |
2276 | (in which case it is not needed anymore) but when new sesion is created | |
2277 | the password ptr is put in the new session structure (in which case the | |
2278 | password will be freed at unmount time) */ | |
70fe7dc0 JL |
2279 | out: |
2280 | /* zero out password before freeing */ | |
2281 | if (volume_info.password != NULL) { | |
2282 | memset(volume_info.password, 0, strlen(volume_info.password)); | |
2283 | kfree(volume_info.password); | |
2284 | } | |
f99d49ad | 2285 | kfree(volume_info.UNC); |
2fe87f02 | 2286 | kfree(volume_info.prepath); |
1da177e4 LT |
2287 | FreeXid(xid); |
2288 | return rc; | |
2289 | } | |
2290 | ||
2291 | static int | |
2292 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 2293 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
2294 | const struct nls_table *nls_codepage) |
2295 | { | |
2296 | struct smb_hdr *smb_buffer; | |
2297 | struct smb_hdr *smb_buffer_response; | |
2298 | SESSION_SETUP_ANDX *pSMB; | |
2299 | SESSION_SETUP_ANDX *pSMBr; | |
2300 | char *bcc_ptr; | |
2301 | char *user; | |
2302 | char *domain; | |
2303 | int rc = 0; | |
2304 | int remaining_words = 0; | |
2305 | int bytes_returned = 0; | |
2306 | int len; | |
2307 | __u32 capabilities; | |
2308 | __u16 count; | |
2309 | ||
eeac8047 | 2310 | cFYI(1, ("In sesssetup")); |
4523cc30 | 2311 | if (ses == NULL) |
1da177e4 LT |
2312 | return -EINVAL; |
2313 | user = ses->userName; | |
2314 | domain = ses->domainName; | |
2315 | smb_buffer = cifs_buf_get(); | |
2316 | if (smb_buffer == NULL) { | |
2317 | return -ENOMEM; | |
2318 | } | |
2319 | smb_buffer_response = smb_buffer; | |
2320 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2321 | ||
2322 | /* send SMBsessionSetup here */ | |
2323 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2324 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2325 | ||
1982c344 | 2326 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2327 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2328 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2329 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2330 | ||
50c2f753 SF |
2331 | if (ses->server->secMode & |
2332 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
2333 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2334 | ||
2335 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2336 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2337 | if (ses->capabilities & CAP_UNICODE) { | |
2338 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2339 | capabilities |= CAP_UNICODE; | |
2340 | } | |
2341 | if (ses->capabilities & CAP_STATUS32) { | |
2342 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2343 | capabilities |= CAP_STATUS32; | |
2344 | } | |
2345 | if (ses->capabilities & CAP_DFS) { | |
2346 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2347 | capabilities |= CAP_DFS; | |
2348 | } | |
2349 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2350 | ||
50c2f753 | 2351 | pSMB->req_no_secext.CaseInsensitivePasswordLength = |
7c7b25bc | 2352 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2353 | |
2354 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2355 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2356 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2357 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2358 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2359 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2360 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2361 | |
2362 | if (ses->capabilities & CAP_UNICODE) { | |
2363 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2364 | *bcc_ptr = 0; | |
2365 | bcc_ptr++; | |
2366 | } | |
4523cc30 | 2367 | if (user == NULL) |
3979877e | 2368 | bytes_returned = 0; /* skip null user */ |
50c2f753 | 2369 | else |
1da177e4 | 2370 | bytes_returned = |
50c2f753 | 2371 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2372 | nls_codepage); |
2373 | /* convert number of 16 bit words to bytes */ | |
2374 | bcc_ptr += 2 * bytes_returned; | |
2375 | bcc_ptr += 2; /* trailing null */ | |
2376 | if (domain == NULL) | |
2377 | bytes_returned = | |
e89dc920 | 2378 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2379 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2380 | else | |
2381 | bytes_returned = | |
e89dc920 | 2382 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2383 | nls_codepage); |
2384 | bcc_ptr += 2 * bytes_returned; | |
2385 | bcc_ptr += 2; | |
2386 | bytes_returned = | |
e89dc920 | 2387 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2388 | 32, nls_codepage); |
2389 | bcc_ptr += 2 * bytes_returned; | |
2390 | bytes_returned = | |
e9ff3990 | 2391 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, |
1da177e4 LT |
2392 | 32, nls_codepage); |
2393 | bcc_ptr += 2 * bytes_returned; | |
2394 | bcc_ptr += 2; | |
2395 | bytes_returned = | |
e89dc920 | 2396 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2397 | 64, nls_codepage); |
2398 | bcc_ptr += 2 * bytes_returned; | |
2399 | bcc_ptr += 2; | |
2400 | } else { | |
50c2f753 | 2401 | if (user != NULL) { |
1da177e4 LT |
2402 | strncpy(bcc_ptr, user, 200); |
2403 | bcc_ptr += strnlen(user, 200); | |
2404 | } | |
2405 | *bcc_ptr = 0; | |
2406 | bcc_ptr++; | |
2407 | if (domain == NULL) { | |
2408 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2409 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2410 | } else { | |
2411 | strncpy(bcc_ptr, domain, 64); | |
2412 | bcc_ptr += strnlen(domain, 64); | |
2413 | *bcc_ptr = 0; | |
2414 | bcc_ptr++; | |
2415 | } | |
2416 | strcpy(bcc_ptr, "Linux version "); | |
2417 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2418 | strcpy(bcc_ptr, utsname()->release); |
2419 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2420 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2421 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2422 | } | |
2423 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2424 | smb_buffer->smb_buf_length += count; | |
2425 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2426 | ||
2427 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2428 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2429 | if (rc) { |
2430 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2431 | } else if ((smb_buffer_response->WordCount == 3) | |
2432 | || (smb_buffer_response->WordCount == 4)) { | |
2433 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2434 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2435 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2436 | cFYI(1, (" Guest login")); /* BB mark SesInfo struct? */ |
2437 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format | |
2438 | (little endian) */ | |
1da177e4 | 2439 | cFYI(1, ("UID = %d ", ses->Suid)); |
50c2f753 SF |
2440 | /* response can have either 3 or 4 word count - Samba sends 3 */ |
2441 | bcc_ptr = pByteArea(smb_buffer_response); | |
1da177e4 LT |
2442 | if ((pSMBr->resp.hdr.WordCount == 3) |
2443 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2444 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2445 | if (pSMBr->resp.hdr.WordCount == 4) | |
2446 | bcc_ptr += blob_len; | |
2447 | ||
2448 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2449 | if ((long) (bcc_ptr) % 2) { | |
2450 | remaining_words = | |
50c2f753 SF |
2451 | (BCC(smb_buffer_response) - 1) / 2; |
2452 | /* Unicode strings must be word | |
2453 | aligned */ | |
2454 | bcc_ptr++; | |
1da177e4 LT |
2455 | } else { |
2456 | remaining_words = | |
2457 | BCC(smb_buffer_response) / 2; | |
2458 | } | |
2459 | len = | |
2460 | UniStrnlen((wchar_t *) bcc_ptr, | |
2461 | remaining_words - 1); | |
2462 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2463 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2464 | terminating last Unicode string in response */ | |
fb8c4b14 | 2465 | if (ses->serverOS) |
a424f8bf | 2466 | kfree(ses->serverOS); |
50c2f753 SF |
2467 | ses->serverOS = kzalloc(2 * (len + 1), |
2468 | GFP_KERNEL); | |
fb8c4b14 | 2469 | if (ses->serverOS == NULL) |
433dc24f | 2470 | goto sesssetup_nomem; |
1da177e4 | 2471 | cifs_strfromUCS_le(ses->serverOS, |
50c2f753 SF |
2472 | (__le16 *)bcc_ptr, |
2473 | len, nls_codepage); | |
1da177e4 LT |
2474 | bcc_ptr += 2 * (len + 1); |
2475 | remaining_words -= len + 1; | |
2476 | ses->serverOS[2 * len] = 0; | |
2477 | ses->serverOS[1 + (2 * len)] = 0; | |
2478 | if (remaining_words > 0) { | |
2479 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2480 | remaining_words-1); | |
cd49b492 | 2481 | kfree(ses->serverNOS); |
50c2f753 SF |
2482 | ses->serverNOS = kzalloc(2 * (len + 1), |
2483 | GFP_KERNEL); | |
fb8c4b14 | 2484 | if (ses->serverNOS == NULL) |
433dc24f | 2485 | goto sesssetup_nomem; |
1da177e4 | 2486 | cifs_strfromUCS_le(ses->serverNOS, |
50c2f753 SF |
2487 | (__le16 *)bcc_ptr, |
2488 | len, nls_codepage); | |
1da177e4 LT |
2489 | bcc_ptr += 2 * (len + 1); |
2490 | ses->serverNOS[2 * len] = 0; | |
2491 | ses->serverNOS[1 + (2 * len)] = 0; | |
fb8c4b14 | 2492 | if (strncmp(ses->serverNOS, |
50c2f753 | 2493 | "NT LAN Manager 4", 16) == 0) { |
467a8f8d | 2494 | cFYI(1, ("NT4 server")); |
1da177e4 LT |
2495 | ses->flags |= CIFS_SES_NT4; |
2496 | } | |
2497 | remaining_words -= len + 1; | |
2498 | if (remaining_words > 0) { | |
433dc24f | 2499 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
50c2f753 SF |
2500 | /* last string is not always null terminated |
2501 | (for e.g. for Windows XP & 2000) */ | |
fb8c4b14 | 2502 | if (ses->serverDomain) |
a424f8bf | 2503 | kfree(ses->serverDomain); |
1da177e4 | 2504 | ses->serverDomain = |
50c2f753 SF |
2505 | kzalloc(2*(len+1), |
2506 | GFP_KERNEL); | |
fb8c4b14 | 2507 | if (ses->serverDomain == NULL) |
433dc24f | 2508 | goto sesssetup_nomem; |
1da177e4 | 2509 | cifs_strfromUCS_le(ses->serverDomain, |
50c2f753 SF |
2510 | (__le16 *)bcc_ptr, |
2511 | len, nls_codepage); | |
1da177e4 LT |
2512 | bcc_ptr += 2 * (len + 1); |
2513 | ses->serverDomain[2*len] = 0; | |
2514 | ses->serverDomain[1+(2*len)] = 0; | |
50c2f753 SF |
2515 | } else { /* else no more room so create |
2516 | dummy domain string */ | |
fb8c4b14 | 2517 | if (ses->serverDomain) |
a424f8bf | 2518 | kfree(ses->serverDomain); |
50c2f753 | 2519 | ses->serverDomain = |
e915fc49 | 2520 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2521 | } |
50c2f753 SF |
2522 | } else { /* no room so create dummy domain |
2523 | and NOS string */ | |
2524 | ||
433dc24f SF |
2525 | /* if these kcallocs fail not much we |
2526 | can do, but better to not fail the | |
2527 | sesssetup itself */ | |
cd49b492 | 2528 | kfree(ses->serverDomain); |
1da177e4 | 2529 | ses->serverDomain = |
e915fc49 | 2530 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2531 | kfree(ses->serverNOS); |
1da177e4 | 2532 | ses->serverNOS = |
e915fc49 | 2533 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2534 | } |
2535 | } else { /* ASCII */ | |
2536 | len = strnlen(bcc_ptr, 1024); | |
2537 | if (((long) bcc_ptr + len) - (long) | |
2538 | pByteArea(smb_buffer_response) | |
2539 | <= BCC(smb_buffer_response)) { | |
cd49b492 | 2540 | kfree(ses->serverOS); |
50c2f753 SF |
2541 | ses->serverOS = kzalloc(len + 1, |
2542 | GFP_KERNEL); | |
fb8c4b14 | 2543 | if (ses->serverOS == NULL) |
433dc24f | 2544 | goto sesssetup_nomem; |
50c2f753 | 2545 | strncpy(ses->serverOS, bcc_ptr, len); |
1da177e4 LT |
2546 | |
2547 | bcc_ptr += len; | |
50c2f753 SF |
2548 | /* null terminate the string */ |
2549 | bcc_ptr[0] = 0; | |
1da177e4 LT |
2550 | bcc_ptr++; |
2551 | ||
2552 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2553 | kfree(ses->serverNOS); |
50c2f753 SF |
2554 | ses->serverNOS = kzalloc(len + 1, |
2555 | GFP_KERNEL); | |
fb8c4b14 | 2556 | if (ses->serverNOS == NULL) |
433dc24f | 2557 | goto sesssetup_nomem; |
1da177e4 LT |
2558 | strncpy(ses->serverNOS, bcc_ptr, len); |
2559 | bcc_ptr += len; | |
2560 | bcc_ptr[0] = 0; | |
2561 | bcc_ptr++; | |
2562 | ||
2563 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 2564 | if (ses->serverDomain) |
a424f8bf | 2565 | kfree(ses->serverDomain); |
50c2f753 SF |
2566 | ses->serverDomain = kzalloc(len + 1, |
2567 | GFP_KERNEL); | |
fb8c4b14 | 2568 | if (ses->serverDomain == NULL) |
433dc24f | 2569 | goto sesssetup_nomem; |
50c2f753 SF |
2570 | strncpy(ses->serverDomain, bcc_ptr, |
2571 | len); | |
1da177e4 LT |
2572 | bcc_ptr += len; |
2573 | bcc_ptr[0] = 0; | |
2574 | bcc_ptr++; | |
2575 | } else | |
2576 | cFYI(1, | |
50c2f753 SF |
2577 | ("Variable field of length %d " |
2578 | "extends beyond end of smb ", | |
1da177e4 LT |
2579 | len)); |
2580 | } | |
2581 | } else { | |
2582 | cERROR(1, | |
50c2f753 SF |
2583 | (" Security Blob Length extends beyond " |
2584 | "end of SMB")); | |
1da177e4 LT |
2585 | } |
2586 | } else { | |
2587 | cERROR(1, | |
2588 | (" Invalid Word count %d: ", | |
2589 | smb_buffer_response->WordCount)); | |
2590 | rc = -EIO; | |
2591 | } | |
433dc24f SF |
2592 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2593 | since that could make reconnection harder, and | |
2594 | reconnection might be needed to free memory */ | |
a8a11d39 | 2595 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2596 | |
2597 | return rc; | |
2598 | } | |
2599 | ||
1da177e4 LT |
2600 | static int |
2601 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
4b18f2a9 | 2602 | struct cifsSesInfo *ses, bool *pNTLMv2_flag, |
1da177e4 LT |
2603 | const struct nls_table *nls_codepage) |
2604 | { | |
2605 | struct smb_hdr *smb_buffer; | |
2606 | struct smb_hdr *smb_buffer_response; | |
2607 | SESSION_SETUP_ANDX *pSMB; | |
2608 | SESSION_SETUP_ANDX *pSMBr; | |
2609 | char *bcc_ptr; | |
2610 | char *domain; | |
2611 | int rc = 0; | |
2612 | int remaining_words = 0; | |
2613 | int bytes_returned = 0; | |
2614 | int len; | |
6345a3a8 | 2615 | int SecurityBlobLength = sizeof(NEGOTIATE_MESSAGE); |
1da177e4 LT |
2616 | PNEGOTIATE_MESSAGE SecurityBlob; |
2617 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2618 | __u32 negotiate_flags, capabilities; | |
2619 | __u16 count; | |
2620 | ||
12b3b8ff | 2621 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
fb8c4b14 | 2622 | if (ses == NULL) |
1da177e4 LT |
2623 | return -EINVAL; |
2624 | domain = ses->domainName; | |
4b18f2a9 | 2625 | *pNTLMv2_flag = false; |
1da177e4 LT |
2626 | smb_buffer = cifs_buf_get(); |
2627 | if (smb_buffer == NULL) { | |
2628 | return -ENOMEM; | |
2629 | } | |
2630 | smb_buffer_response = smb_buffer; | |
2631 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2632 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2633 | ||
2634 | /* send SMBsessionSetup here */ | |
2635 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2636 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2637 | |
2638 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2639 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2640 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2641 | ||
2642 | pSMB->req.AndXCommand = 0xFF; | |
2643 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2644 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2645 | ||
fb8c4b14 | 2646 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2647 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2648 | ||
2649 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2650 | CAP_EXTENDED_SECURITY; | |
2651 | if (ses->capabilities & CAP_UNICODE) { | |
2652 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2653 | capabilities |= CAP_UNICODE; | |
2654 | } | |
2655 | if (ses->capabilities & CAP_STATUS32) { | |
2656 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2657 | capabilities |= CAP_STATUS32; | |
2658 | } | |
2659 | if (ses->capabilities & CAP_DFS) { | |
2660 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2661 | capabilities |= CAP_DFS; | |
2662 | } | |
2663 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2664 | ||
2665 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2666 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2667 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2668 | SecurityBlob->MessageType = NtLmNegotiate; | |
2669 | negotiate_flags = | |
2670 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2671 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2672 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 | 2673 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
fb8c4b14 | 2674 | if (sign_CIFS_PDUs) |
1da177e4 | 2675 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 2676 | /* if (ntlmv2_support) |
3979877e | 2677 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ |
1da177e4 LT |
2678 | /* setup pointers to domain name and workstation name */ |
2679 | bcc_ptr += SecurityBlobLength; | |
2680 | ||
2681 | SecurityBlob->WorkstationName.Buffer = 0; | |
2682 | SecurityBlob->WorkstationName.Length = 0; | |
2683 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2684 | ||
12b3b8ff SF |
2685 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2686 | along with username on auth request (ie the response to challenge) */ | |
2687 | SecurityBlob->DomainName.Buffer = 0; | |
2688 | SecurityBlob->DomainName.Length = 0; | |
2689 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2690 | if (ses->capabilities & CAP_UNICODE) { |
2691 | if ((long) bcc_ptr % 2) { | |
2692 | *bcc_ptr = 0; | |
2693 | bcc_ptr++; | |
2694 | } | |
2695 | ||
2696 | bytes_returned = | |
e89dc920 | 2697 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2698 | 32, nls_codepage); |
2699 | bcc_ptr += 2 * bytes_returned; | |
2700 | bytes_returned = | |
e9ff3990 | 2701 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2702 | nls_codepage); |
2703 | bcc_ptr += 2 * bytes_returned; | |
2704 | bcc_ptr += 2; /* null terminate Linux version */ | |
2705 | bytes_returned = | |
e89dc920 | 2706 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2707 | 64, nls_codepage); |
2708 | bcc_ptr += 2 * bytes_returned; | |
2709 | *(bcc_ptr + 1) = 0; | |
2710 | *(bcc_ptr + 2) = 0; | |
2711 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2712 | *(bcc_ptr + 1) = 0; | |
2713 | *(bcc_ptr + 2) = 0; | |
2714 | bcc_ptr += 2; /* null domain */ | |
2715 | } else { /* ASCII */ | |
2716 | strcpy(bcc_ptr, "Linux version "); | |
2717 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2718 | strcpy(bcc_ptr, utsname()->release); |
2719 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2720 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2721 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2722 | bcc_ptr++; /* empty domain field */ | |
2723 | *bcc_ptr = 0; | |
2724 | } | |
2725 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2726 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2727 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2728 | smb_buffer->smb_buf_length += count; | |
2729 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2730 | ||
2731 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2732 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2733 | |
2734 | if (smb_buffer_response->Status.CifsError == | |
2735 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2736 | rc = 0; | |
2737 | ||
2738 | if (rc) { | |
2739 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2740 | } else if ((smb_buffer_response->WordCount == 3) | |
2741 | || (smb_buffer_response->WordCount == 4)) { | |
2742 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2743 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2744 | ||
2745 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2746 | cFYI(1, (" Guest login")); |
2747 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
1da177e4 | 2748 | |
50c2f753 SF |
2749 | bcc_ptr = pByteArea(smb_buffer_response); |
2750 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
2751 | |
2752 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2753 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2754 | cFYI(1, | |
2755 | ("Unexpected NTLMSSP message type received %d", | |
2756 | SecurityBlob2->MessageType)); | |
2757 | } else if (ses) { | |
50c2f753 | 2758 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ |
12b3b8ff | 2759 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2760 | if ((pSMBr->resp.hdr.WordCount == 3) |
2761 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2762 | && (blob_len < | |
2763 | pSMBr->resp.ByteCount))) { | |
2764 | ||
2765 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2766 | bcc_ptr += blob_len; | |
12b3b8ff | 2767 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2768 | blob_len)); |
2769 | } | |
2770 | ||
12b3b8ff | 2771 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2772 | |
2773 | memcpy(ses->server->cryptKey, | |
2774 | SecurityBlob2->Challenge, | |
2775 | CIFS_CRYPTO_KEY_SIZE); | |
50c2f753 | 2776 | if (SecurityBlob2->NegotiateFlags & |
12b3b8ff | 2777 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) |
4b18f2a9 | 2778 | *pNTLMv2_flag = true; |
1da177e4 | 2779 | |
50c2f753 SF |
2780 | if ((SecurityBlob2->NegotiateFlags & |
2781 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
1da177e4 | 2782 | || (sign_CIFS_PDUs > 1)) |
50c2f753 SF |
2783 | ses->server->secMode |= |
2784 | SECMODE_SIGN_REQUIRED; | |
2785 | if ((SecurityBlob2->NegotiateFlags & | |
1da177e4 | 2786 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) |
50c2f753 | 2787 | ses->server->secMode |= |
1da177e4 LT |
2788 | SECMODE_SIGN_ENABLED; |
2789 | ||
2790 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2791 | if ((long) (bcc_ptr) % 2) { | |
2792 | remaining_words = | |
2793 | (BCC(smb_buffer_response) | |
2794 | - 1) / 2; | |
50c2f753 SF |
2795 | /* Must word align unicode strings */ |
2796 | bcc_ptr++; | |
1da177e4 LT |
2797 | } else { |
2798 | remaining_words = | |
2799 | BCC | |
2800 | (smb_buffer_response) / 2; | |
2801 | } | |
2802 | len = | |
2803 | UniStrnlen((wchar_t *) bcc_ptr, | |
2804 | remaining_words - 1); | |
2805 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2806 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2807 | terminating last Unicode string in response */ | |
fb8c4b14 | 2808 | if (ses->serverOS) |
a424f8bf | 2809 | kfree(ses->serverOS); |
1da177e4 | 2810 | ses->serverOS = |
e915fc49 | 2811 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2812 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2813 | (__le16 *) |
1da177e4 LT |
2814 | bcc_ptr, len, |
2815 | nls_codepage); | |
2816 | bcc_ptr += 2 * (len + 1); | |
2817 | remaining_words -= len + 1; | |
2818 | ses->serverOS[2 * len] = 0; | |
2819 | ses->serverOS[1 + (2 * len)] = 0; | |
2820 | if (remaining_words > 0) { | |
2821 | len = UniStrnlen((wchar_t *) | |
2822 | bcc_ptr, | |
2823 | remaining_words | |
2824 | - 1); | |
cd49b492 | 2825 | kfree(ses->serverNOS); |
1da177e4 | 2826 | ses->serverNOS = |
e915fc49 | 2827 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2828 | GFP_KERNEL); |
2829 | cifs_strfromUCS_le(ses-> | |
2830 | serverNOS, | |
e89dc920 | 2831 | (__le16 *) |
1da177e4 LT |
2832 | bcc_ptr, |
2833 | len, | |
2834 | nls_codepage); | |
2835 | bcc_ptr += 2 * (len + 1); | |
2836 | ses->serverNOS[2 * len] = 0; | |
2837 | ses->serverNOS[1 + | |
2838 | (2 * len)] = 0; | |
2839 | remaining_words -= len + 1; | |
2840 | if (remaining_words > 0) { | |
50c2f753 SF |
2841 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
2842 | /* last string not always null terminated | |
2843 | (for e.g. for Windows XP & 2000) */ | |
cd49b492 | 2844 | kfree(ses->serverDomain); |
1da177e4 | 2845 | ses->serverDomain = |
e915fc49 | 2846 | kzalloc(2 * |
1da177e4 LT |
2847 | (len + |
2848 | 1), | |
2849 | GFP_KERNEL); | |
2850 | cifs_strfromUCS_le | |
e89dc920 SF |
2851 | (ses->serverDomain, |
2852 | (__le16 *)bcc_ptr, | |
2853 | len, nls_codepage); | |
1da177e4 LT |
2854 | bcc_ptr += |
2855 | 2 * (len + 1); | |
e89dc920 | 2856 | ses->serverDomain[2*len] |
1da177e4 | 2857 | = 0; |
e89dc920 SF |
2858 | ses->serverDomain |
2859 | [1 + (2 * len)] | |
1da177e4 LT |
2860 | = 0; |
2861 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 2862 | else { |
cd49b492 | 2863 | kfree(ses->serverDomain); |
1da177e4 | 2864 | ses->serverDomain = |
e915fc49 | 2865 | kzalloc(2, |
1da177e4 | 2866 | GFP_KERNEL); |
a424f8bf | 2867 | } |
1da177e4 | 2868 | } else { /* no room so create dummy domain and NOS string */ |
cd49b492 | 2869 | kfree(ses->serverDomain); |
1da177e4 | 2870 | ses->serverDomain = |
e915fc49 | 2871 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2872 | kfree(ses->serverNOS); |
1da177e4 | 2873 | ses->serverNOS = |
e915fc49 | 2874 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2875 | } |
2876 | } else { /* ASCII */ | |
2877 | len = strnlen(bcc_ptr, 1024); | |
2878 | if (((long) bcc_ptr + len) - (long) | |
2879 | pByteArea(smb_buffer_response) | |
2880 | <= BCC(smb_buffer_response)) { | |
fb8c4b14 | 2881 | if (ses->serverOS) |
a424f8bf | 2882 | kfree(ses->serverOS); |
1da177e4 | 2883 | ses->serverOS = |
e915fc49 | 2884 | kzalloc(len + 1, |
1da177e4 LT |
2885 | GFP_KERNEL); |
2886 | strncpy(ses->serverOS, | |
2887 | bcc_ptr, len); | |
2888 | ||
2889 | bcc_ptr += len; | |
2890 | bcc_ptr[0] = 0; /* null terminate string */ | |
2891 | bcc_ptr++; | |
2892 | ||
2893 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2894 | kfree(ses->serverNOS); |
1da177e4 | 2895 | ses->serverNOS = |
e915fc49 | 2896 | kzalloc(len + 1, |
1da177e4 LT |
2897 | GFP_KERNEL); |
2898 | strncpy(ses->serverNOS, bcc_ptr, len); | |
2899 | bcc_ptr += len; | |
2900 | bcc_ptr[0] = 0; | |
2901 | bcc_ptr++; | |
2902 | ||
2903 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2904 | kfree(ses->serverDomain); |
1da177e4 | 2905 | ses->serverDomain = |
e915fc49 | 2906 | kzalloc(len + 1, |
1da177e4 | 2907 | GFP_KERNEL); |
50c2f753 SF |
2908 | strncpy(ses->serverDomain, |
2909 | bcc_ptr, len); | |
1da177e4 LT |
2910 | bcc_ptr += len; |
2911 | bcc_ptr[0] = 0; | |
2912 | bcc_ptr++; | |
2913 | } else | |
2914 | cFYI(1, | |
63135e08 SF |
2915 | ("field of length %d " |
2916 | "extends beyond end of smb", | |
1da177e4 LT |
2917 | len)); |
2918 | } | |
2919 | } else { | |
50c2f753 SF |
2920 | cERROR(1, ("Security Blob Length extends beyond" |
2921 | " end of SMB")); | |
1da177e4 LT |
2922 | } |
2923 | } else { | |
2924 | cERROR(1, ("No session structure passed in.")); | |
2925 | } | |
2926 | } else { | |
2927 | cERROR(1, | |
5815449d | 2928 | (" Invalid Word count %d:", |
1da177e4 LT |
2929 | smb_buffer_response->WordCount)); |
2930 | rc = -EIO; | |
2931 | } | |
2932 | ||
a8a11d39 | 2933 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2934 | |
2935 | return rc; | |
2936 | } | |
2937 | static int | |
2938 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
4b18f2a9 | 2939 | char *ntlm_session_key, bool ntlmv2_flag, |
6345a3a8 | 2940 | const struct nls_table *nls_codepage) |
1da177e4 LT |
2941 | { |
2942 | struct smb_hdr *smb_buffer; | |
2943 | struct smb_hdr *smb_buffer_response; | |
2944 | SESSION_SETUP_ANDX *pSMB; | |
2945 | SESSION_SETUP_ANDX *pSMBr; | |
2946 | char *bcc_ptr; | |
2947 | char *user; | |
2948 | char *domain; | |
2949 | int rc = 0; | |
2950 | int remaining_words = 0; | |
2951 | int bytes_returned = 0; | |
2952 | int len; | |
6345a3a8 | 2953 | int SecurityBlobLength = sizeof(AUTHENTICATE_MESSAGE); |
1da177e4 LT |
2954 | PAUTHENTICATE_MESSAGE SecurityBlob; |
2955 | __u32 negotiate_flags, capabilities; | |
2956 | __u16 count; | |
2957 | ||
2958 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
fb8c4b14 | 2959 | if (ses == NULL) |
1da177e4 LT |
2960 | return -EINVAL; |
2961 | user = ses->userName; | |
2962 | domain = ses->domainName; | |
2963 | smb_buffer = cifs_buf_get(); | |
2964 | if (smb_buffer == NULL) { | |
2965 | return -ENOMEM; | |
2966 | } | |
2967 | smb_buffer_response = smb_buffer; | |
6345a3a8 CG |
2968 | pSMB = (SESSION_SETUP_ANDX *)smb_buffer; |
2969 | pSMBr = (SESSION_SETUP_ANDX *)smb_buffer_response; | |
1da177e4 LT |
2970 | |
2971 | /* send SMBsessionSetup here */ | |
2972 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2973 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2974 | |
2975 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2976 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
2977 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2978 | pSMB->req.AndXCommand = 0xFF; | |
2979 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2980 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2981 | ||
2982 | pSMB->req.hdr.Uid = ses->Suid; | |
2983 | ||
fb8c4b14 | 2984 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2985 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2986 | ||
2987 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
6345a3a8 | 2988 | CAP_EXTENDED_SECURITY; |
1da177e4 LT |
2989 | if (ses->capabilities & CAP_UNICODE) { |
2990 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2991 | capabilities |= CAP_UNICODE; | |
2992 | } | |
2993 | if (ses->capabilities & CAP_STATUS32) { | |
2994 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2995 | capabilities |= CAP_STATUS32; | |
2996 | } | |
2997 | if (ses->capabilities & CAP_DFS) { | |
2998 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2999 | capabilities |= CAP_DFS; | |
3000 | } | |
3001 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
3002 | ||
6345a3a8 CG |
3003 | bcc_ptr = (char *)&pSMB->req.SecurityBlob; |
3004 | SecurityBlob = (PAUTHENTICATE_MESSAGE)bcc_ptr; | |
1da177e4 LT |
3005 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); |
3006 | SecurityBlob->MessageType = NtLmAuthenticate; | |
3007 | bcc_ptr += SecurityBlobLength; | |
6345a3a8 CG |
3008 | negotiate_flags = NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | |
3009 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
3010 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
fb8c4b14 | 3011 | if (sign_CIFS_PDUs) |
1da177e4 | 3012 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 3013 | if (ntlmv2_flag) |
1da177e4 LT |
3014 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; |
3015 | ||
3016 | /* setup pointers to domain name and workstation name */ | |
3017 | ||
3018 | SecurityBlob->WorkstationName.Buffer = 0; | |
3019 | SecurityBlob->WorkstationName.Length = 0; | |
3020 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
3021 | SecurityBlob->SessionKey.Length = 0; | |
3022 | SecurityBlob->SessionKey.MaximumLength = 0; | |
3023 | SecurityBlob->SessionKey.Buffer = 0; | |
3024 | ||
3025 | SecurityBlob->LmChallengeResponse.Length = 0; | |
3026 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
3027 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
3028 | ||
3029 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 3030 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 3031 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
3032 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
3033 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
3034 | SecurityBlob->NtChallengeResponse.Buffer = |
3035 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
3036 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
3037 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
3038 | |
3039 | if (ses->capabilities & CAP_UNICODE) { | |
3040 | if (domain == NULL) { | |
3041 | SecurityBlob->DomainName.Buffer = 0; | |
3042 | SecurityBlob->DomainName.Length = 0; | |
3043 | SecurityBlob->DomainName.MaximumLength = 0; | |
3044 | } else { | |
77159b4d | 3045 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 | 3046 | nls_codepage); |
77159b4d | 3047 | ln *= 2; |
1da177e4 | 3048 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3049 | cpu_to_le16(ln); |
1da177e4 LT |
3050 | SecurityBlob->DomainName.Buffer = |
3051 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3052 | bcc_ptr += ln; |
3053 | SecurityBlobLength += ln; | |
3054 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3055 | } |
3056 | if (user == NULL) { | |
3057 | SecurityBlob->UserName.Buffer = 0; | |
3058 | SecurityBlob->UserName.Length = 0; | |
3059 | SecurityBlob->UserName.MaximumLength = 0; | |
3060 | } else { | |
77159b4d | 3061 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 | 3062 | nls_codepage); |
77159b4d | 3063 | ln *= 2; |
1da177e4 | 3064 | SecurityBlob->UserName.MaximumLength = |
77159b4d | 3065 | cpu_to_le16(ln); |
1da177e4 LT |
3066 | SecurityBlob->UserName.Buffer = |
3067 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3068 | bcc_ptr += ln; |
3069 | SecurityBlobLength += ln; | |
3070 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3071 | } |
3072 | ||
63135e08 SF |
3073 | /* SecurityBlob->WorkstationName.Length = |
3074 | cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); | |
1da177e4 | 3075 | SecurityBlob->WorkstationName.Length *= 2; |
63135e08 SF |
3076 | SecurityBlob->WorkstationName.MaximumLength = |
3077 | cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
3078 | SecurityBlob->WorkstationName.Buffer = | |
3079 | cpu_to_le32(SecurityBlobLength); | |
1da177e4 LT |
3080 | bcc_ptr += SecurityBlob->WorkstationName.Length; |
3081 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
63135e08 SF |
3082 | SecurityBlob->WorkstationName.Length = |
3083 | cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
1da177e4 LT |
3084 | |
3085 | if ((long) bcc_ptr % 2) { | |
3086 | *bcc_ptr = 0; | |
3087 | bcc_ptr++; | |
3088 | } | |
3089 | bytes_returned = | |
e89dc920 | 3090 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
3091 | 32, nls_codepage); |
3092 | bcc_ptr += 2 * bytes_returned; | |
3093 | bytes_returned = | |
e9ff3990 | 3094 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
3095 | nls_codepage); |
3096 | bcc_ptr += 2 * bytes_returned; | |
3097 | bcc_ptr += 2; /* null term version string */ | |
3098 | bytes_returned = | |
e89dc920 | 3099 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
3100 | 64, nls_codepage); |
3101 | bcc_ptr += 2 * bytes_returned; | |
3102 | *(bcc_ptr + 1) = 0; | |
3103 | *(bcc_ptr + 2) = 0; | |
3104 | bcc_ptr += 2; /* null terminate network opsys string */ | |
3105 | *(bcc_ptr + 1) = 0; | |
3106 | *(bcc_ptr + 2) = 0; | |
3107 | bcc_ptr += 2; /* null domain */ | |
3108 | } else { /* ASCII */ | |
3109 | if (domain == NULL) { | |
3110 | SecurityBlob->DomainName.Buffer = 0; | |
3111 | SecurityBlob->DomainName.Length = 0; | |
3112 | SecurityBlob->DomainName.MaximumLength = 0; | |
3113 | } else { | |
77159b4d | 3114 | __u16 ln; |
1da177e4 LT |
3115 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; |
3116 | strncpy(bcc_ptr, domain, 63); | |
77159b4d | 3117 | ln = strnlen(domain, 64); |
1da177e4 | 3118 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3119 | cpu_to_le16(ln); |
1da177e4 LT |
3120 | SecurityBlob->DomainName.Buffer = |
3121 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3122 | bcc_ptr += ln; |
3123 | SecurityBlobLength += ln; | |
3124 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3125 | } |
3126 | if (user == NULL) { | |
3127 | SecurityBlob->UserName.Buffer = 0; | |
3128 | SecurityBlob->UserName.Length = 0; | |
3129 | SecurityBlob->UserName.MaximumLength = 0; | |
3130 | } else { | |
77159b4d | 3131 | __u16 ln; |
1da177e4 | 3132 | strncpy(bcc_ptr, user, 63); |
77159b4d SF |
3133 | ln = strnlen(user, 64); |
3134 | SecurityBlob->UserName.MaximumLength = cpu_to_le16(ln); | |
1da177e4 | 3135 | SecurityBlob->UserName.Buffer = |
77159b4d SF |
3136 | cpu_to_le32(SecurityBlobLength); |
3137 | bcc_ptr += ln; | |
3138 | SecurityBlobLength += ln; | |
3139 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3140 | } |
3141 | /* BB fill in our workstation name if known BB */ | |
3142 | ||
3143 | strcpy(bcc_ptr, "Linux version "); | |
3144 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
3145 | strcpy(bcc_ptr, utsname()->release); |
3146 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
3147 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
3148 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
3149 | bcc_ptr++; /* null domain */ | |
3150 | *bcc_ptr = 0; | |
3151 | } | |
3152 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
3153 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
3154 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
3155 | smb_buffer->smb_buf_length += count; | |
3156 | pSMB->req.ByteCount = cpu_to_le16(count); | |
3157 | ||
3158 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 3159 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 | 3160 | if (rc) { |
6345a3a8 CG |
3161 | /* rc = map_smb_to_linux_error(smb_buffer_response) done in SendReceive now */ |
3162 | } else if ((smb_buffer_response->WordCount == 3) || | |
3163 | (smb_buffer_response->WordCount == 4)) { | |
1da177e4 | 3164 | __u16 action = le16_to_cpu(pSMBr->resp.Action); |
6345a3a8 | 3165 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); |
1da177e4 | 3166 | if (action & GUEST_LOGIN) |
50c2f753 SF |
3167 | cFYI(1, (" Guest login")); /* BB Should we set anything |
3168 | in SesInfo struct ? */ | |
3169 | /* if (SecurityBlob2->MessageType != NtLm??) { | |
3170 | cFYI("Unexpected message type on auth response is %d")); | |
3171 | } */ | |
3172 | ||
1da177e4 LT |
3173 | if (ses) { |
3174 | cFYI(1, | |
50c2f753 | 3175 | ("Check challenge UID %d vs auth response UID %d", |
1da177e4 | 3176 | ses->Suid, smb_buffer_response->Uid)); |
50c2f753 SF |
3177 | /* UID left in wire format */ |
3178 | ses->Suid = smb_buffer_response->Uid; | |
3179 | bcc_ptr = pByteArea(smb_buffer_response); | |
3180 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
3181 | if ((pSMBr->resp.hdr.WordCount == 3) |
3182 | || ((pSMBr->resp.hdr.WordCount == 4) | |
3183 | && (blob_len < | |
3184 | pSMBr->resp.ByteCount))) { | |
3185 | if (pSMBr->resp.hdr.WordCount == 4) { | |
3186 | bcc_ptr += | |
3187 | blob_len; | |
3188 | cFYI(1, | |
3189 | ("Security Blob Length %d ", | |
3190 | blob_len)); | |
3191 | } | |
3192 | ||
3193 | cFYI(1, | |
3194 | ("NTLMSSP response to Authenticate ")); | |
3195 | ||
3196 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3197 | if ((long) (bcc_ptr) % 2) { | |
3198 | remaining_words = | |
3199 | (BCC(smb_buffer_response) | |
3200 | - 1) / 2; | |
3201 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
3202 | } else { | |
3203 | remaining_words = BCC(smb_buffer_response) / 2; | |
3204 | } | |
77159b4d SF |
3205 | len = UniStrnlen((wchar_t *) bcc_ptr, |
3206 | remaining_words - 1); | |
1da177e4 LT |
3207 | /* We look for obvious messed up bcc or strings in response so we do not go off |
3208 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
3209 | terminating last Unicode string in response */ | |
fb8c4b14 | 3210 | if (ses->serverOS) |
08775834 | 3211 | kfree(ses->serverOS); |
1da177e4 | 3212 | ses->serverOS = |
e915fc49 | 3213 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 3214 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 3215 | (__le16 *) |
1da177e4 LT |
3216 | bcc_ptr, len, |
3217 | nls_codepage); | |
3218 | bcc_ptr += 2 * (len + 1); | |
3219 | remaining_words -= len + 1; | |
3220 | ses->serverOS[2 * len] = 0; | |
3221 | ses->serverOS[1 + (2 * len)] = 0; | |
3222 | if (remaining_words > 0) { | |
3223 | len = UniStrnlen((wchar_t *) | |
3224 | bcc_ptr, | |
3225 | remaining_words | |
3226 | - 1); | |
cd49b492 | 3227 | kfree(ses->serverNOS); |
1da177e4 | 3228 | ses->serverNOS = |
e915fc49 | 3229 | kzalloc(2 * (len + 1), |
1da177e4 LT |
3230 | GFP_KERNEL); |
3231 | cifs_strfromUCS_le(ses-> | |
3232 | serverNOS, | |
e89dc920 | 3233 | (__le16 *) |
1da177e4 LT |
3234 | bcc_ptr, |
3235 | len, | |
3236 | nls_codepage); | |
3237 | bcc_ptr += 2 * (len + 1); | |
3238 | ses->serverNOS[2 * len] = 0; | |
3239 | ses->serverNOS[1+(2*len)] = 0; | |
3240 | remaining_words -= len + 1; | |
3241 | if (remaining_words > 0) { | |
50c2f753 | 3242 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 3243 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ |
fb8c4b14 | 3244 | if (ses->serverDomain) |
a424f8bf | 3245 | kfree(ses->serverDomain); |
1da177e4 | 3246 | ses->serverDomain = |
e915fc49 | 3247 | kzalloc(2 * |
1da177e4 LT |
3248 | (len + |
3249 | 1), | |
3250 | GFP_KERNEL); | |
3251 | cifs_strfromUCS_le | |
3252 | (ses-> | |
3253 | serverDomain, | |
e89dc920 | 3254 | (__le16 *) |
1da177e4 LT |
3255 | bcc_ptr, len, |
3256 | nls_codepage); | |
3257 | bcc_ptr += | |
3258 | 2 * (len + 1); | |
3259 | ses-> | |
3260 | serverDomain[2 | |
3261 | * len] | |
3262 | = 0; | |
3263 | ses-> | |
3264 | serverDomain[1 | |
3265 | + | |
3266 | (2 | |
3267 | * | |
3268 | len)] | |
3269 | = 0; | |
3270 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 3271 | else { |
fb8c4b14 | 3272 | if (ses->serverDomain) |
a424f8bf | 3273 | kfree(ses->serverDomain); |
e915fc49 | 3274 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 3275 | } |
1da177e4 | 3276 | } else { /* no room so create dummy domain and NOS string */ |
fb8c4b14 | 3277 | if (ses->serverDomain) |
a424f8bf | 3278 | kfree(ses->serverDomain); |
e915fc49 | 3279 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 3280 | kfree(ses->serverNOS); |
e915fc49 | 3281 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3282 | } |
3283 | } else { /* ASCII */ | |
3284 | len = strnlen(bcc_ptr, 1024); | |
50c2f753 SF |
3285 | if (((long) bcc_ptr + len) - |
3286 | (long) pByteArea(smb_buffer_response) | |
63135e08 | 3287 | <= BCC(smb_buffer_response)) { |
fb8c4b14 | 3288 | if (ses->serverOS) |
a424f8bf | 3289 | kfree(ses->serverOS); |
77159b4d | 3290 | ses->serverOS = kzalloc(len + 1, GFP_KERNEL); |
1da177e4 LT |
3291 | strncpy(ses->serverOS,bcc_ptr, len); |
3292 | ||
3293 | bcc_ptr += len; | |
3294 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3295 | bcc_ptr++; | |
3296 | ||
3297 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3298 | kfree(ses->serverNOS); |
50c2f753 SF |
3299 | ses->serverNOS = kzalloc(len+1, |
3300 | GFP_KERNEL); | |
63135e08 SF |
3301 | strncpy(ses->serverNOS, |
3302 | bcc_ptr, len); | |
1da177e4 LT |
3303 | bcc_ptr += len; |
3304 | bcc_ptr[0] = 0; | |
3305 | bcc_ptr++; | |
3306 | ||
3307 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 3308 | if (ses->serverDomain) |
a424f8bf | 3309 | kfree(ses->serverDomain); |
63135e08 SF |
3310 | ses->serverDomain = |
3311 | kzalloc(len+1, | |
3312 | GFP_KERNEL); | |
3313 | strncpy(ses->serverDomain, | |
3314 | bcc_ptr, len); | |
1da177e4 LT |
3315 | bcc_ptr += len; |
3316 | bcc_ptr[0] = 0; | |
3317 | bcc_ptr++; | |
3318 | } else | |
6345a3a8 | 3319 | cFYI(1, ("field of length %d " |
63135e08 | 3320 | "extends beyond end of smb ", |
1da177e4 LT |
3321 | len)); |
3322 | } | |
3323 | } else { | |
6345a3a8 | 3324 | cERROR(1, ("Security Blob extends beyond end " |
63135e08 | 3325 | "of SMB")); |
1da177e4 LT |
3326 | } |
3327 | } else { | |
3328 | cERROR(1, ("No session structure passed in.")); | |
3329 | } | |
3330 | } else { | |
6345a3a8 | 3331 | cERROR(1, ("Invalid Word count %d: ", |
1da177e4 LT |
3332 | smb_buffer_response->WordCount)); |
3333 | rc = -EIO; | |
3334 | } | |
3335 | ||
a8a11d39 | 3336 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3337 | |
3338 | return rc; | |
3339 | } | |
3340 | ||
3341 | int | |
3342 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3343 | const char *tree, struct cifsTconInfo *tcon, | |
3344 | const struct nls_table *nls_codepage) | |
3345 | { | |
3346 | struct smb_hdr *smb_buffer; | |
3347 | struct smb_hdr *smb_buffer_response; | |
3348 | TCONX_REQ *pSMB; | |
3349 | TCONX_RSP *pSMBr; | |
3350 | unsigned char *bcc_ptr; | |
3351 | int rc = 0; | |
3352 | int length; | |
3353 | __u16 count; | |
3354 | ||
3355 | if (ses == NULL) | |
3356 | return -EIO; | |
3357 | ||
3358 | smb_buffer = cifs_buf_get(); | |
3359 | if (smb_buffer == NULL) { | |
3360 | return -ENOMEM; | |
3361 | } | |
3362 | smb_buffer_response = smb_buffer; | |
3363 | ||
3364 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3365 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3366 | |
3367 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3368 | smb_buffer->Uid = ses->Suid; |
3369 | pSMB = (TCONX_REQ *) smb_buffer; | |
3370 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3371 | ||
3372 | pSMB->AndXCommand = 0xFF; | |
3373 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3374 | bcc_ptr = &pSMB->Password[0]; |
fb8c4b14 | 3375 | if ((ses->server->secMode) & SECMODE_USER) { |
eeac8047 | 3376 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
7c7b25bc | 3377 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3378 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3379 | /* already aligned so no need to do it below */ |
eeac8047 | 3380 | } else { |
7c7b25bc | 3381 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3382 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3383 | specified as required (when that support is added to | |
3384 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3385 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3386 | by Samba (not sure whether other servers allow |
3387 | NTLMv2 password here) */ | |
7c7b25bc | 3388 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
50c2f753 | 3389 | if ((extended_security & CIFSSEC_MAY_LANMAN) && |
7c7b25bc SF |
3390 | (ses->server->secType == LANMAN)) |
3391 | calc_lanman_hash(ses, bcc_ptr); | |
3392 | else | |
3393 | #endif /* CIFS_WEAK_PW_HASH */ | |
eeac8047 SF |
3394 | SMBNTencrypt(ses->password, |
3395 | ses->server->cryptKey, | |
3396 | bcc_ptr); | |
3397 | ||
7c7b25bc | 3398 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
fb8c4b14 | 3399 | if (ses->capabilities & CAP_UNICODE) { |
7c7b25bc SF |
3400 | /* must align unicode strings */ |
3401 | *bcc_ptr = 0; /* null byte password */ | |
3402 | bcc_ptr++; | |
3403 | } | |
eeac8047 | 3404 | } |
1da177e4 | 3405 | |
50c2f753 | 3406 | if (ses->server->secMode & |
a878fb22 | 3407 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3408 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3409 | ||
3410 | if (ses->capabilities & CAP_STATUS32) { | |
3411 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3412 | } | |
3413 | if (ses->capabilities & CAP_DFS) { | |
3414 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3415 | } | |
3416 | if (ses->capabilities & CAP_UNICODE) { | |
3417 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3418 | length = | |
50c2f753 SF |
3419 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3420 | 6 /* max utf8 char length in bytes */ * | |
a878fb22 SF |
3421 | (/* server len*/ + 256 /* share len */), nls_codepage); |
3422 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3423 | bcc_ptr += 2; /* skip trailing null */ |
3424 | } else { /* ASCII */ | |
1da177e4 LT |
3425 | strcpy(bcc_ptr, tree); |
3426 | bcc_ptr += strlen(tree) + 1; | |
3427 | } | |
3428 | strcpy(bcc_ptr, "?????"); | |
3429 | bcc_ptr += strlen("?????"); | |
3430 | bcc_ptr += 1; | |
3431 | count = bcc_ptr - &pSMB->Password[0]; | |
3432 | pSMB->hdr.smb_buf_length += count; | |
3433 | pSMB->ByteCount = cpu_to_le16(count); | |
3434 | ||
133672ef SF |
3435 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, |
3436 | CIFS_STD_OP); | |
1da177e4 LT |
3437 | |
3438 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3439 | /* above now done in SendReceive */ | |
3440 | if ((rc == 0) && (tcon != NULL)) { | |
3441 | tcon->tidStatus = CifsGood; | |
3442 | tcon->tid = smb_buffer_response->Tid; | |
3443 | bcc_ptr = pByteArea(smb_buffer_response); | |
3444 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
50c2f753 | 3445 | /* skip service field (NB: this field is always ASCII) */ |
7f8ed420 SF |
3446 | if (length == 3) { |
3447 | if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') && | |
3448 | (bcc_ptr[2] == 'C')) { | |
3449 | cFYI(1, ("IPC connection")); | |
3450 | tcon->ipc = 1; | |
3451 | } | |
3452 | } else if (length == 2) { | |
3453 | if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) { | |
3454 | /* the most common case */ | |
3455 | cFYI(1, ("disk share connection")); | |
3456 | } | |
3457 | } | |
50c2f753 | 3458 | bcc_ptr += length + 1; |
1da177e4 LT |
3459 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
3460 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3461 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3462 | if ((bcc_ptr + (2 * length)) - | |
3463 | pByteArea(smb_buffer_response) <= | |
3464 | BCC(smb_buffer_response)) { | |
f99d49ad | 3465 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3466 | tcon->nativeFileSystem = |
e915fc49 | 3467 | kzalloc(length + 2, GFP_KERNEL); |
88f370a6 SF |
3468 | if (tcon->nativeFileSystem) |
3469 | cifs_strfromUCS_le( | |
3470 | tcon->nativeFileSystem, | |
3471 | (__le16 *) bcc_ptr, | |
3472 | length, nls_codepage); | |
1da177e4 LT |
3473 | bcc_ptr += 2 * length; |
3474 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3475 | bcc_ptr[1] = 0; | |
3476 | bcc_ptr += 2; | |
3477 | } | |
50c2f753 | 3478 | /* else do not bother copying these information fields*/ |
1da177e4 LT |
3479 | } else { |
3480 | length = strnlen(bcc_ptr, 1024); | |
3481 | if ((bcc_ptr + length) - | |
3482 | pByteArea(smb_buffer_response) <= | |
3483 | BCC(smb_buffer_response)) { | |
f99d49ad | 3484 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3485 | tcon->nativeFileSystem = |
e915fc49 | 3486 | kzalloc(length + 1, GFP_KERNEL); |
88f370a6 SF |
3487 | if (tcon->nativeFileSystem) |
3488 | strncpy(tcon->nativeFileSystem, bcc_ptr, | |
3489 | length); | |
1da177e4 | 3490 | } |
50c2f753 | 3491 | /* else do not bother copying these information fields*/ |
1da177e4 | 3492 | } |
fb8c4b14 | 3493 | if ((smb_buffer_response->WordCount == 3) || |
1a4e15a0 SF |
3494 | (smb_buffer_response->WordCount == 7)) |
3495 | /* field is in same location */ | |
3979877e SF |
3496 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
3497 | else | |
3498 | tcon->Flags = 0; | |
1da177e4 LT |
3499 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3500 | } else if ((rc == 0) && tcon == NULL) { | |
50c2f753 | 3501 | /* all we need to save for IPC$ connection */ |
1da177e4 LT |
3502 | ses->ipc_tid = smb_buffer_response->Tid; |
3503 | } | |
3504 | ||
a8a11d39 | 3505 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3506 | return rc; |
3507 | } | |
3508 | ||
3509 | int | |
3510 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3511 | { | |
3512 | int rc = 0; | |
3513 | int xid; | |
3514 | struct cifsSesInfo *ses = NULL; | |
3515 | struct task_struct *cifsd_task; | |
50c2f753 | 3516 | char *tmp; |
1da177e4 LT |
3517 | |
3518 | xid = GetXid(); | |
3519 | ||
3520 | if (cifs_sb->tcon) { | |
3521 | ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ | |
3522 | rc = CIFSSMBTDis(xid, cifs_sb->tcon); | |
3523 | if (rc == -EBUSY) { | |
3524 | FreeXid(xid); | |
3525 | return 0; | |
3526 | } | |
5d941ca6 | 3527 | DeleteTconOplockQEntries(cifs_sb->tcon); |
1da177e4 LT |
3528 | tconInfoFree(cifs_sb->tcon); |
3529 | if ((ses) && (ses->server)) { | |
3530 | /* save off task so we do not refer to ses later */ | |
3531 | cifsd_task = ses->server->tsk; | |
3532 | cFYI(1, ("About to do SMBLogoff ")); | |
3533 | rc = CIFSSMBLogoff(xid, ses); | |
3534 | if (rc == -EBUSY) { | |
3535 | FreeXid(xid); | |
3536 | return 0; | |
3537 | } else if (rc == -ESHUTDOWN) { | |
467a8f8d | 3538 | cFYI(1, ("Waking up socket by sending signal")); |
f7f7c31c | 3539 | if (cifsd_task) { |
50c2f753 | 3540 | force_sig(SIGKILL, cifsd_task); |
aaf737ad | 3541 | kthread_stop(cifsd_task); |
f191401f | 3542 | } |
1da177e4 LT |
3543 | rc = 0; |
3544 | } /* else - we have an smb session | |
3545 | left on this socket do not kill cifsd */ | |
3546 | } else | |
3547 | cFYI(1, ("No session or bad tcon")); | |
3548 | } | |
50c2f753 | 3549 | |
1da177e4 | 3550 | cifs_sb->tcon = NULL; |
2fe87f02 SF |
3551 | tmp = cifs_sb->prepath; |
3552 | cifs_sb->prepathlen = 0; | |
3553 | cifs_sb->prepath = NULL; | |
3554 | kfree(tmp); | |
1da177e4 LT |
3555 | if (ses) |
3556 | sesInfoFree(ses); | |
3557 | ||
3558 | FreeXid(xid); | |
88e7d705 | 3559 | return rc; |
50c2f753 | 3560 | } |
1da177e4 LT |
3561 | |
3562 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
50c2f753 | 3563 | struct nls_table *nls_info) |
1da177e4 LT |
3564 | { |
3565 | int rc = 0; | |
7c7b25bc | 3566 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
4b18f2a9 | 3567 | bool ntlmv2_flag = false; |
ad009ac9 | 3568 | int first_time = 0; |
1da177e4 LT |
3569 | |
3570 | /* what if server changes its buffer size after dropping the session? */ | |
fb8c4b14 | 3571 | if (pSesInfo->server->maxBuf == 0) /* no need to send on reconnect */ { |
1da177e4 | 3572 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
fb8c4b14 | 3573 | if (rc == -EAGAIN) /* retry only once on 1st time connection */ { |
1da177e4 | 3574 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
50c2f753 | 3575 | if (rc == -EAGAIN) |
1da177e4 LT |
3576 | rc = -EHOSTDOWN; |
3577 | } | |
fb8c4b14 | 3578 | if (rc == 0) { |
1da177e4 | 3579 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 | 3580 | if (pSesInfo->server->tcpStatus != CifsExiting) |
1da177e4 LT |
3581 | pSesInfo->server->tcpStatus = CifsGood; |
3582 | else | |
3583 | rc = -EHOSTDOWN; | |
3584 | spin_unlock(&GlobalMid_Lock); | |
3585 | ||
3586 | } | |
ad009ac9 | 3587 | first_time = 1; |
1da177e4 LT |
3588 | } |
3589 | if (!rc) { | |
9ac00b7d | 3590 | pSesInfo->flags = 0; |
1da177e4 | 3591 | pSesInfo->capabilities = pSesInfo->server->capabilities; |
fb8c4b14 | 3592 | if (linuxExtEnabled == 0) |
1da177e4 | 3593 | pSesInfo->capabilities &= (~CAP_UNIX); |
ad009ac9 | 3594 | /* pSesInfo->sequence_number = 0;*/ |
50c2f753 SF |
3595 | cFYI(1, |
3596 | ("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", | |
1da177e4 LT |
3597 | pSesInfo->server->secMode, |
3598 | pSesInfo->server->capabilities, | |
175ec9e1 | 3599 | pSesInfo->server->timeAdj)); |
fb8c4b14 | 3600 | if (experimEnabled < 2) |
3979877e SF |
3601 | rc = CIFS_SessSetup(xid, pSesInfo, |
3602 | first_time, nls_info); | |
189acaae | 3603 | else if (extended_security |
50c2f753 | 3604 | && (pSesInfo->capabilities |
175ec9e1 | 3605 | & CAP_EXTENDED_SECURITY) |
1da177e4 | 3606 | && (pSesInfo->server->secType == NTLMSSP)) { |
189acaae | 3607 | rc = -EOPNOTSUPP; |
1da177e4 LT |
3608 | } else if (extended_security |
3609 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
3610 | && (pSesInfo->server->secType == RawNTLMSSP)) { | |
5815449d | 3611 | cFYI(1, ("NTLMSSP sesssetup")); |
1da177e4 LT |
3612 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, |
3613 | pSesInfo, | |
3614 | &ntlmv2_flag, | |
3615 | nls_info); | |
3616 | if (!rc) { | |
fb8c4b14 | 3617 | if (ntlmv2_flag) { |
50c2f753 | 3618 | char *v2_response; |
467a8f8d | 3619 | cFYI(1, ("more secure NTLM ver2 hash")); |
50c2f753 | 3620 | if (CalcNTLMv2_partial_mac_key(pSesInfo, |
1da177e4 LT |
3621 | nls_info)) { |
3622 | rc = -ENOMEM; | |
3623 | goto ss_err_exit; | |
3624 | } else | |
3625 | v2_response = kmalloc(16 + 64 /* blob */, GFP_KERNEL); | |
fb8c4b14 | 3626 | if (v2_response) { |
50c2f753 SF |
3627 | CalcNTLMv2_response(pSesInfo, |
3628 | v2_response); | |
fb8c4b14 | 3629 | /* if (first_time) |
50c2f753 SF |
3630 | cifs_calculate_ntlmv2_mac_key( |
3631 | pSesInfo->server->mac_signing_key, | |
3632 | response, ntlm_session_key,*/ | |
1da177e4 LT |
3633 | kfree(v2_response); |
3634 | /* BB Put dummy sig in SessSetup PDU? */ | |
3635 | } else { | |
3636 | rc = -ENOMEM; | |
3637 | goto ss_err_exit; | |
3638 | } | |
3639 | ||
3640 | } else { | |
3641 | SMBNTencrypt(pSesInfo->password, | |
3642 | pSesInfo->server->cryptKey, | |
3643 | ntlm_session_key); | |
3644 | ||
fb8c4b14 | 3645 | if (first_time) |
ad009ac9 | 3646 | cifs_calculate_mac_key( |
b609f06a | 3647 | &pSesInfo->server->mac_signing_key, |
ad009ac9 SF |
3648 | ntlm_session_key, |
3649 | pSesInfo->password); | |
1da177e4 LT |
3650 | } |
3651 | /* for better security the weaker lanman hash not sent | |
3652 | in AuthSessSetup so we no longer calculate it */ | |
3653 | ||
3654 | rc = CIFSNTLMSSPAuthSessSetup(xid, | |
3655 | pSesInfo, | |
3656 | ntlm_session_key, | |
3657 | ntlmv2_flag, | |
3658 | nls_info); | |
3659 | } | |
3660 | } else { /* old style NTLM 0.12 session setup */ | |
3661 | SMBNTencrypt(pSesInfo->password, | |
3662 | pSesInfo->server->cryptKey, | |
3663 | ntlm_session_key); | |
3664 | ||
fb8c4b14 | 3665 | if (first_time) |
ad009ac9 | 3666 | cifs_calculate_mac_key( |
b609f06a | 3667 | &pSesInfo->server->mac_signing_key, |
ad009ac9 SF |
3668 | ntlm_session_key, pSesInfo->password); |
3669 | ||
1da177e4 LT |
3670 | rc = CIFSSessSetup(xid, pSesInfo, |
3671 | ntlm_session_key, nls_info); | |
3672 | } | |
3673 | if (rc) { | |
fb8c4b14 | 3674 | cERROR(1, ("Send error in SessSetup = %d", rc)); |
1da177e4 | 3675 | } else { |
467a8f8d | 3676 | cFYI(1, ("CIFS Session Established successfully")); |
1da177e4 LT |
3677 | pSesInfo->status = CifsGood; |
3678 | } | |
3679 | } | |
3680 | ss_err_exit: | |
3681 | return rc; | |
3682 | } | |
3683 |