Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * fs/cifs/connect.c | |
3 | * | |
366781c1 | 4 | * Copyright (C) International Business Machines Corp., 2002,2008 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * This library is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU Lesser General Public License as published | |
9 | * by the Free Software Foundation; either version 2.1 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This library is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
15 | * the GNU Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public License | |
18 | * along with this library; if not, write to the Free Software | |
fb8c4b14 | 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
1da177e4 LT |
20 | */ |
21 | #include <linux/fs.h> | |
22 | #include <linux/net.h> | |
23 | #include <linux/string.h> | |
24 | #include <linux/list.h> | |
25 | #include <linux/wait.h> | |
26 | #include <linux/ipv6.h> | |
27 | #include <linux/pagemap.h> | |
28 | #include <linux/ctype.h> | |
29 | #include <linux/utsname.h> | |
30 | #include <linux/mempool.h> | |
b8643e1b | 31 | #include <linux/delay.h> |
f191401f | 32 | #include <linux/completion.h> |
aaf737ad | 33 | #include <linux/kthread.h> |
0ae0efad | 34 | #include <linux/pagevec.h> |
7dfb7103 | 35 | #include <linux/freezer.h> |
1da177e4 LT |
36 | #include <asm/uaccess.h> |
37 | #include <asm/processor.h> | |
38 | #include "cifspdu.h" | |
39 | #include "cifsglob.h" | |
40 | #include "cifsproto.h" | |
41 | #include "cifs_unicode.h" | |
42 | #include "cifs_debug.h" | |
43 | #include "cifs_fs_sb.h" | |
44 | #include "ntlmssp.h" | |
45 | #include "nterr.h" | |
46 | #include "rfc1002pdu.h" | |
a2653eba | 47 | #include "cn_cifs.h" |
1da177e4 LT |
48 | |
49 | #define CIFS_PORT 445 | |
50 | #define RFC1001_PORT 139 | |
51 | ||
1da177e4 LT |
52 | extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, |
53 | unsigned char *p24); | |
54 | ||
55 | extern mempool_t *cifs_req_poolp; | |
56 | ||
57 | struct smb_vol { | |
58 | char *username; | |
59 | char *password; | |
60 | char *domainname; | |
61 | char *UNC; | |
62 | char *UNCip; | |
95b1cb90 | 63 | char *in6_addr; /* ipv6 address as human readable form of in6_addr */ |
1da177e4 LT |
64 | char *iocharset; /* local code page for mapping to and from Unicode */ |
65 | char source_rfc1001_name[16]; /* netbios name of client */ | |
a10faeb2 | 66 | char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */ |
1da177e4 LT |
67 | uid_t linux_uid; |
68 | gid_t linux_gid; | |
69 | mode_t file_mode; | |
70 | mode_t dir_mode; | |
189acaae | 71 | unsigned secFlg; |
4b18f2a9 SF |
72 | bool rw:1; |
73 | bool retry:1; | |
74 | bool intr:1; | |
75 | bool setuids:1; | |
76 | bool override_uid:1; | |
77 | bool override_gid:1; | |
d0a9c078 | 78 | bool dynperm:1; |
4b18f2a9 SF |
79 | bool noperm:1; |
80 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
81 | bool cifs_acl:1; | |
82 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ | |
83 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
84 | bool direct_io:1; | |
95b1cb90 SF |
85 | bool remap:1; /* set to remap seven reserved chars in filenames */ |
86 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ | |
4b18f2a9 SF |
87 | bool no_linux_ext:1; |
88 | bool sfu_emul:1; | |
95b1cb90 SF |
89 | bool nullauth:1; /* attempt to authenticate with null user */ |
90 | bool nocase:1; /* request case insensitive filenames */ | |
91 | bool nobrl:1; /* disable sending byte range locks to srv */ | |
92 | bool seal:1; /* request transport encryption on share */ | |
84210e91 SF |
93 | bool nodfs:1; /* Do not request DFS, even if available */ |
94 | bool local_lease:1; /* check leases only on local system, not remote */ | |
edf1ae40 SF |
95 | bool noblocksnd:1; |
96 | bool noautotune:1; | |
1da177e4 LT |
97 | unsigned int rsize; |
98 | unsigned int wsize; | |
99 | unsigned int sockopt; | |
100 | unsigned short int port; | |
fb8c4b14 | 101 | char *prepath; |
1da177e4 LT |
102 | }; |
103 | ||
fb8c4b14 | 104 | static int ipv4_connect(struct sockaddr_in *psin_server, |
1da177e4 | 105 | struct socket **csocket, |
fb8c4b14 | 106 | char *netb_name, |
edf1ae40 SF |
107 | char *server_netb_name, |
108 | bool noblocksnd, | |
109 | bool nosndbuf); /* ipv6 never set sndbuf size */ | |
fb8c4b14 | 110 | static int ipv6_connect(struct sockaddr_in6 *psin_server, |
edf1ae40 | 111 | struct socket **csocket, bool noblocksnd); |
1da177e4 LT |
112 | |
113 | ||
fb8c4b14 | 114 | /* |
1da177e4 | 115 | * cifs tcp session reconnection |
fb8c4b14 | 116 | * |
1da177e4 LT |
117 | * mark tcp session as reconnecting so temporarily locked |
118 | * mark all smb sessions as reconnecting for tcp session | |
119 | * reconnect tcp session | |
120 | * wake up waiters on reconnection? - (not needed currently) | |
121 | */ | |
122 | ||
2cd646a2 | 123 | static int |
1da177e4 LT |
124 | cifs_reconnect(struct TCP_Server_Info *server) |
125 | { | |
126 | int rc = 0; | |
f1987b44 | 127 | struct list_head *tmp, *tmp2; |
1da177e4 LT |
128 | struct cifsSesInfo *ses; |
129 | struct cifsTconInfo *tcon; | |
fb8c4b14 | 130 | struct mid_q_entry *mid_entry; |
50c2f753 | 131 | |
1da177e4 | 132 | spin_lock(&GlobalMid_Lock); |
469ee614 | 133 | if (server->tcpStatus == CifsExiting) { |
fb8c4b14 | 134 | /* the demux thread will exit normally |
1da177e4 LT |
135 | next time through the loop */ |
136 | spin_unlock(&GlobalMid_Lock); | |
137 | return rc; | |
138 | } else | |
139 | server->tcpStatus = CifsNeedReconnect; | |
140 | spin_unlock(&GlobalMid_Lock); | |
141 | server->maxBuf = 0; | |
142 | ||
e4eb295d | 143 | cFYI(1, ("Reconnecting tcp session")); |
1da177e4 LT |
144 | |
145 | /* before reconnecting the tcp session, mark the smb session (uid) | |
146 | and the tid bad so they are not used until reconnected */ | |
14fbf50d JL |
147 | read_lock(&cifs_tcp_ses_lock); |
148 | list_for_each(tmp, &server->smb_ses_list) { | |
149 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); | |
150 | ses->need_reconnect = true; | |
151 | ses->ipc_tid = 0; | |
f1987b44 JL |
152 | list_for_each(tmp2, &ses->tcon_list) { |
153 | tcon = list_entry(tmp2, struct cifsTconInfo, tcon_list); | |
3b795210 | 154 | tcon->need_reconnect = true; |
f1987b44 | 155 | } |
1da177e4 | 156 | } |
f1987b44 | 157 | read_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 158 | /* do not want to be sending data on a socket we are freeing */ |
fb8c4b14 SF |
159 | down(&server->tcpSem); |
160 | if (server->ssocket) { | |
467a8f8d | 161 | cFYI(1, ("State: 0x%x Flags: 0x%lx", server->ssocket->state, |
1da177e4 | 162 | server->ssocket->flags)); |
91cf45f0 | 163 | kernel_sock_shutdown(server->ssocket, SHUT_WR); |
fb8c4b14 | 164 | cFYI(1, ("Post shutdown state: 0x%x Flags: 0x%lx", |
467a8f8d | 165 | server->ssocket->state, |
1da177e4 LT |
166 | server->ssocket->flags)); |
167 | sock_release(server->ssocket); | |
168 | server->ssocket = NULL; | |
169 | } | |
170 | ||
171 | spin_lock(&GlobalMid_Lock); | |
172 | list_for_each(tmp, &server->pending_mid_q) { | |
173 | mid_entry = list_entry(tmp, struct | |
174 | mid_q_entry, | |
175 | qhead); | |
ad8b15f0 | 176 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { |
09d1db5c SF |
177 | /* Mark other intransit requests as needing |
178 | retry so we do not immediately mark the | |
179 | session bad again (ie after we reconnect | |
180 | below) as they timeout too */ | |
ad8b15f0 | 181 | mid_entry->midState = MID_RETRY_NEEDED; |
1da177e4 LT |
182 | } |
183 | } | |
184 | spin_unlock(&GlobalMid_Lock); | |
fb8c4b14 | 185 | up(&server->tcpSem); |
1da177e4 | 186 | |
469ee614 JL |
187 | while ((server->tcpStatus != CifsExiting) && |
188 | (server->tcpStatus != CifsGood)) { | |
6c3d8909 | 189 | try_to_freeze(); |
3ec332ef | 190 | if (server->addr.sockAddr6.sin6_family == AF_INET6) { |
fb8c4b14 | 191 | rc = ipv6_connect(&server->addr.sockAddr6, |
edf1ae40 | 192 | &server->ssocket, server->noautotune); |
1da177e4 | 193 | } else { |
fb8c4b14 | 194 | rc = ipv4_connect(&server->addr.sockAddr, |
1da177e4 | 195 | &server->ssocket, |
a10faeb2 | 196 | server->workstation_RFC1001_name, |
edf1ae40 SF |
197 | server->server_RFC1001_name, |
198 | server->noblocksnd, server->noautotune); | |
1da177e4 | 199 | } |
fb8c4b14 SF |
200 | if (rc) { |
201 | cFYI(1, ("reconnect error %d", rc)); | |
0cb766ae | 202 | msleep(3000); |
1da177e4 LT |
203 | } else { |
204 | atomic_inc(&tcpSesReconnectCount); | |
205 | spin_lock(&GlobalMid_Lock); | |
469ee614 | 206 | if (server->tcpStatus != CifsExiting) |
1da177e4 | 207 | server->tcpStatus = CifsGood; |
ad009ac9 | 208 | server->sequence_number = 0; |
fb8c4b14 | 209 | spin_unlock(&GlobalMid_Lock); |
1da177e4 LT |
210 | /* atomic_set(&server->inFlight,0);*/ |
211 | wake_up(&server->response_q); | |
212 | } | |
213 | } | |
214 | return rc; | |
215 | } | |
216 | ||
fb8c4b14 | 217 | /* |
e4eb295d SF |
218 | return codes: |
219 | 0 not a transact2, or all data present | |
220 | >0 transact2 with that much data missing | |
221 | -EINVAL = invalid transact2 | |
222 | ||
223 | */ | |
fb8c4b14 | 224 | static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) |
e4eb295d | 225 | { |
fb8c4b14 SF |
226 | struct smb_t2_rsp *pSMBt; |
227 | int total_data_size; | |
e4eb295d SF |
228 | int data_in_this_rsp; |
229 | int remaining; | |
230 | ||
fb8c4b14 | 231 | if (pSMB->Command != SMB_COM_TRANSACTION2) |
e4eb295d SF |
232 | return 0; |
233 | ||
fb8c4b14 SF |
234 | /* check for plausible wct, bcc and t2 data and parm sizes */ |
235 | /* check for parm and data offset going beyond end of smb */ | |
236 | if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
467a8f8d | 237 | cFYI(1, ("invalid transact2 word count")); |
e4eb295d SF |
238 | return -EINVAL; |
239 | } | |
240 | ||
241 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
242 | ||
243 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
244 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
245 | ||
246 | remaining = total_data_size - data_in_this_rsp; | |
247 | ||
fb8c4b14 | 248 | if (remaining == 0) |
e4eb295d | 249 | return 0; |
fb8c4b14 | 250 | else if (remaining < 0) { |
467a8f8d | 251 | cFYI(1, ("total data %d smaller than data in frame %d", |
e4eb295d SF |
252 | total_data_size, data_in_this_rsp)); |
253 | return -EINVAL; | |
254 | } else { | |
467a8f8d | 255 | cFYI(1, ("missing %d bytes from transact2, check next response", |
e4eb295d | 256 | remaining)); |
fb8c4b14 SF |
257 | if (total_data_size > maxBufSize) { |
258 | cERROR(1, ("TotalDataSize %d is over maximum buffer %d", | |
259 | total_data_size, maxBufSize)); | |
260 | return -EINVAL; | |
e4eb295d SF |
261 | } |
262 | return remaining; | |
263 | } | |
264 | } | |
265 | ||
fb8c4b14 | 266 | static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) |
e4eb295d SF |
267 | { |
268 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
269 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
270 | int total_data_size; | |
271 | int total_in_buf; | |
272 | int remaining; | |
273 | int total_in_buf2; | |
fb8c4b14 SF |
274 | char *data_area_of_target; |
275 | char *data_area_of_buf2; | |
e4eb295d SF |
276 | __u16 byte_count; |
277 | ||
278 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
279 | ||
fb8c4b14 | 280 | if (total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { |
63135e08 | 281 | cFYI(1, ("total data size of primary and secondary t2 differ")); |
e4eb295d SF |
282 | } |
283 | ||
284 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
285 | ||
286 | remaining = total_data_size - total_in_buf; | |
50c2f753 | 287 | |
fb8c4b14 | 288 | if (remaining < 0) |
e4eb295d SF |
289 | return -EINVAL; |
290 | ||
fb8c4b14 | 291 | if (remaining == 0) /* nothing to do, ignore */ |
e4eb295d | 292 | return 0; |
50c2f753 | 293 | |
e4eb295d | 294 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); |
fb8c4b14 | 295 | if (remaining < total_in_buf2) { |
467a8f8d | 296 | cFYI(1, ("transact2 2nd response contains too much data")); |
e4eb295d SF |
297 | } |
298 | ||
299 | /* find end of first SMB data area */ | |
fb8c4b14 | 300 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + |
e4eb295d SF |
301 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); |
302 | /* validate target area */ | |
303 | ||
304 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
fb8c4b14 | 305 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); |
e4eb295d SF |
306 | |
307 | data_area_of_target += total_in_buf; | |
308 | ||
309 | /* copy second buffer into end of first buffer */ | |
fb8c4b14 | 310 | memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); |
e4eb295d SF |
311 | total_in_buf += total_in_buf2; |
312 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
313 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
314 | byte_count += total_in_buf2; | |
315 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
316 | ||
70ca734a | 317 | byte_count = pTargetSMB->smb_buf_length; |
e4eb295d SF |
318 | byte_count += total_in_buf2; |
319 | ||
320 | /* BB also add check that we are not beyond maximum buffer size */ | |
50c2f753 | 321 | |
70ca734a | 322 | pTargetSMB->smb_buf_length = byte_count; |
e4eb295d | 323 | |
fb8c4b14 | 324 | if (remaining == total_in_buf2) { |
467a8f8d | 325 | cFYI(1, ("found the last secondary response")); |
e4eb295d SF |
326 | return 0; /* we are done */ |
327 | } else /* more responses to go */ | |
328 | return 1; | |
329 | ||
330 | } | |
331 | ||
1da177e4 LT |
332 | static int |
333 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
334 | { | |
335 | int length; | |
336 | unsigned int pdu_length, total_read; | |
337 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
338 | struct smb_hdr *bigbuf = NULL; |
339 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
340 | struct msghdr smb_msg; |
341 | struct kvec iov; | |
342 | struct socket *csocket = server->ssocket; | |
343 | struct list_head *tmp; | |
344 | struct cifsSesInfo *ses; | |
345 | struct task_struct *task_to_wake = NULL; | |
346 | struct mid_q_entry *mid_entry; | |
70ca734a | 347 | char temp; |
4b18f2a9 SF |
348 | bool isLargeBuf = false; |
349 | bool isMultiRsp; | |
e4eb295d | 350 | int reconnect; |
1da177e4 | 351 | |
1da177e4 | 352 | current->flags |= PF_MEMALLOC; |
ba25f9dc | 353 | cFYI(1, ("Demultiplex PID: %d", task_pid_nr(current))); |
93d0ec85 JL |
354 | |
355 | length = atomic_inc_return(&tcpSesAllocCount); | |
356 | if (length > 1) | |
26f57364 SF |
357 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, |
358 | GFP_KERNEL); | |
1da177e4 | 359 | |
83144186 | 360 | set_freezable(); |
469ee614 | 361 | while (server->tcpStatus != CifsExiting) { |
ede1327e SF |
362 | if (try_to_freeze()) |
363 | continue; | |
b8643e1b SF |
364 | if (bigbuf == NULL) { |
365 | bigbuf = cifs_buf_get(); | |
0fd1ffe0 PM |
366 | if (!bigbuf) { |
367 | cERROR(1, ("No memory for large SMB response")); | |
b8643e1b SF |
368 | msleep(3000); |
369 | /* retry will check if exiting */ | |
370 | continue; | |
371 | } | |
0fd1ffe0 PM |
372 | } else if (isLargeBuf) { |
373 | /* we are reusing a dirty large buf, clear its start */ | |
26f57364 | 374 | memset(bigbuf, 0, sizeof(struct smb_hdr)); |
1da177e4 | 375 | } |
b8643e1b SF |
376 | |
377 | if (smallbuf == NULL) { | |
378 | smallbuf = cifs_small_buf_get(); | |
0fd1ffe0 PM |
379 | if (!smallbuf) { |
380 | cERROR(1, ("No memory for SMB response")); | |
b8643e1b SF |
381 | msleep(1000); |
382 | /* retry will check if exiting */ | |
383 | continue; | |
384 | } | |
385 | /* beginning of smb buffer is cleared in our buf_get */ | |
386 | } else /* if existing small buf clear beginning */ | |
26f57364 | 387 | memset(smallbuf, 0, sizeof(struct smb_hdr)); |
b8643e1b | 388 | |
4b18f2a9 SF |
389 | isLargeBuf = false; |
390 | isMultiRsp = false; | |
b8643e1b | 391 | smb_buffer = smallbuf; |
1da177e4 LT |
392 | iov.iov_base = smb_buffer; |
393 | iov.iov_len = 4; | |
394 | smb_msg.msg_control = NULL; | |
395 | smb_msg.msg_controllen = 0; | |
f01d5e14 SF |
396 | pdu_length = 4; /* enough to get RFC1001 header */ |
397 | incomplete_rcv: | |
1da177e4 LT |
398 | length = |
399 | kernel_recvmsg(csocket, &smb_msg, | |
f01d5e14 | 400 | &iov, 1, pdu_length, 0 /* BB other flags? */); |
1da177e4 | 401 | |
469ee614 | 402 | if (server->tcpStatus == CifsExiting) { |
1da177e4 LT |
403 | break; |
404 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
0fd1ffe0 | 405 | cFYI(1, ("Reconnect after server stopped responding")); |
1da177e4 | 406 | cifs_reconnect(server); |
0fd1ffe0 | 407 | cFYI(1, ("call to reconnect done")); |
1da177e4 LT |
408 | csocket = server->ssocket; |
409 | continue; | |
410 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 411 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
412 | allowing socket to clear and app threads to set |
413 | tcpStatus CifsNeedReconnect if server hung */ | |
c527c8a7 SF |
414 | if (pdu_length < 4) { |
415 | iov.iov_base = (4 - pdu_length) + | |
416 | (char *)smb_buffer; | |
417 | iov.iov_len = pdu_length; | |
418 | smb_msg.msg_control = NULL; | |
419 | smb_msg.msg_controllen = 0; | |
c18c732e | 420 | goto incomplete_rcv; |
c527c8a7 | 421 | } else |
c18c732e | 422 | continue; |
1da177e4 | 423 | } else if (length <= 0) { |
0fd1ffe0 PM |
424 | if (server->tcpStatus == CifsNew) { |
425 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
426 | /* some servers kill the TCP session rather than |
427 | returning an SMB negprot error, in which | |
428 | case reconnecting here is not going to help, | |
429 | and so simply return error to mount */ | |
1da177e4 LT |
430 | break; |
431 | } | |
0fd1ffe0 | 432 | if (!try_to_freeze() && (length == -EINTR)) { |
467a8f8d | 433 | cFYI(1, ("cifsd thread killed")); |
1da177e4 LT |
434 | break; |
435 | } | |
467a8f8d | 436 | cFYI(1, ("Reconnect after unexpected peek error %d", |
57337e42 | 437 | length)); |
1da177e4 LT |
438 | cifs_reconnect(server); |
439 | csocket = server->ssocket; | |
440 | wake_up(&server->response_q); | |
441 | continue; | |
2a974680 PT |
442 | } else if (length < pdu_length) { |
443 | cFYI(1, ("requested %d bytes but only got %d bytes", | |
444 | pdu_length, length)); | |
f01d5e14 | 445 | pdu_length -= length; |
f01d5e14 SF |
446 | msleep(1); |
447 | goto incomplete_rcv; | |
46810cbf | 448 | } |
1da177e4 | 449 | |
70ca734a SF |
450 | /* The right amount was read from socket - 4 bytes */ |
451 | /* so we can now interpret the length field */ | |
46810cbf | 452 | |
70ca734a SF |
453 | /* the first byte big endian of the length field, |
454 | is actually not part of the length but the type | |
455 | with the most common, zero, as regular data */ | |
456 | temp = *((char *) smb_buffer); | |
46810cbf | 457 | |
fb8c4b14 | 458 | /* Note that FC 1001 length is big endian on the wire, |
70ca734a SF |
459 | but we convert it here so it is always manipulated |
460 | as host byte order */ | |
5ca33c6a | 461 | pdu_length = be32_to_cpu((__force __be32)smb_buffer->smb_buf_length); |
70ca734a SF |
462 | smb_buffer->smb_buf_length = pdu_length; |
463 | ||
467a8f8d | 464 | cFYI(1, ("rfc1002 length 0x%x", pdu_length+4)); |
46810cbf | 465 | |
70ca734a | 466 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
fb8c4b14 | 467 | continue; |
70ca734a | 468 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
467a8f8d | 469 | cFYI(1, ("Good RFC 1002 session rsp")); |
e4eb295d | 470 | continue; |
70ca734a | 471 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
fb8c4b14 | 472 | /* we get this from Windows 98 instead of |
46810cbf | 473 | an error on SMB negprot response */ |
fb8c4b14 | 474 | cFYI(1, ("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 475 | pdu_length)); |
fb8c4b14 SF |
476 | if (server->tcpStatus == CifsNew) { |
477 | /* if nack on negprot (rather than | |
46810cbf SF |
478 | ret of smb negprot error) reconnecting |
479 | not going to help, ret error to mount */ | |
480 | break; | |
481 | } else { | |
482 | /* give server a second to | |
483 | clean up before reconnect attempt */ | |
484 | msleep(1000); | |
485 | /* always try 445 first on reconnect | |
486 | since we get NACK on some if we ever | |
fb8c4b14 | 487 | connected to port 139 (the NACK is |
46810cbf SF |
488 | since we do not begin with RFC1001 |
489 | session initialize frame) */ | |
fb8c4b14 | 490 | server->addr.sockAddr.sin_port = |
46810cbf | 491 | htons(CIFS_PORT); |
1da177e4 LT |
492 | cifs_reconnect(server); |
493 | csocket = server->ssocket; | |
46810cbf | 494 | wake_up(&server->response_q); |
1da177e4 | 495 | continue; |
46810cbf | 496 | } |
70ca734a | 497 | } else if (temp != (char) 0) { |
fb8c4b14 | 498 | cERROR(1, ("Unknown RFC 1002 frame")); |
70ca734a SF |
499 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
500 | length); | |
46810cbf SF |
501 | cifs_reconnect(server); |
502 | csocket = server->ssocket; | |
503 | continue; | |
e4eb295d SF |
504 | } |
505 | ||
506 | /* else we have an SMB response */ | |
fb8c4b14 | 507 | if ((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || |
26f57364 | 508 | (pdu_length < sizeof(struct smb_hdr) - 1 - 4)) { |
e4eb295d | 509 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 510 | length, pdu_length+4)); |
e4eb295d SF |
511 | cifs_reconnect(server); |
512 | csocket = server->ssocket; | |
513 | wake_up(&server->response_q); | |
514 | continue; | |
fb8c4b14 | 515 | } |
e4eb295d SF |
516 | |
517 | /* else length ok */ | |
518 | reconnect = 0; | |
519 | ||
fb8c4b14 | 520 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
4b18f2a9 | 521 | isLargeBuf = true; |
e4eb295d SF |
522 | memcpy(bigbuf, smallbuf, 4); |
523 | smb_buffer = bigbuf; | |
524 | } | |
525 | length = 0; | |
526 | iov.iov_base = 4 + (char *)smb_buffer; | |
527 | iov.iov_len = pdu_length; | |
fb8c4b14 | 528 | for (total_read = 0; total_read < pdu_length; |
e4eb295d SF |
529 | total_read += length) { |
530 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
531 | pdu_length - total_read, 0); | |
469ee614 | 532 | if ((server->tcpStatus == CifsExiting) || |
e4eb295d SF |
533 | (length == -EINTR)) { |
534 | /* then will exit */ | |
535 | reconnect = 2; | |
536 | break; | |
537 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
538 | cifs_reconnect(server); |
539 | csocket = server->ssocket; | |
fb8c4b14 | 540 | /* Reconnect wakes up rspns q */ |
e4eb295d SF |
541 | /* Now we will reread sock */ |
542 | reconnect = 1; | |
543 | break; | |
fb8c4b14 | 544 | } else if ((length == -ERESTARTSYS) || |
e4eb295d SF |
545 | (length == -EAGAIN)) { |
546 | msleep(1); /* minimum sleep to prevent looping, | |
fb8c4b14 | 547 | allowing socket to clear and app |
e4eb295d SF |
548 | threads to set tcpStatus |
549 | CifsNeedReconnect if server hung*/ | |
c18c732e | 550 | length = 0; |
46810cbf | 551 | continue; |
e4eb295d | 552 | } else if (length <= 0) { |
fb8c4b14 | 553 | cERROR(1, ("Received no data, expecting %d", |
e4eb295d SF |
554 | pdu_length - total_read)); |
555 | cifs_reconnect(server); | |
556 | csocket = server->ssocket; | |
557 | reconnect = 1; | |
558 | break; | |
46810cbf | 559 | } |
e4eb295d | 560 | } |
fb8c4b14 | 561 | if (reconnect == 2) |
e4eb295d | 562 | break; |
fb8c4b14 | 563 | else if (reconnect == 1) |
e4eb295d | 564 | continue; |
1da177e4 | 565 | |
e4eb295d | 566 | length += 4; /* account for rfc1002 hdr */ |
50c2f753 | 567 | |
09d1db5c | 568 | |
e4eb295d | 569 | dump_smb(smb_buffer, length); |
184ed211 | 570 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 571 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
572 | continue; |
573 | } | |
1da177e4 | 574 | |
e4eb295d SF |
575 | |
576 | task_to_wake = NULL; | |
577 | spin_lock(&GlobalMid_Lock); | |
578 | list_for_each(tmp, &server->pending_mid_q) { | |
579 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
580 | ||
50c2f753 | 581 | if ((mid_entry->mid == smb_buffer->Mid) && |
e4eb295d SF |
582 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && |
583 | (mid_entry->command == smb_buffer->Command)) { | |
fb8c4b14 | 584 | if (check2ndT2(smb_buffer,server->maxBuf) > 0) { |
e4eb295d | 585 | /* We have a multipart transact2 resp */ |
4b18f2a9 | 586 | isMultiRsp = true; |
fb8c4b14 | 587 | if (mid_entry->resp_buf) { |
e4eb295d | 588 | /* merge response - fix up 1st*/ |
50c2f753 | 589 | if (coalesce_t2(smb_buffer, |
e4eb295d | 590 | mid_entry->resp_buf)) { |
4b18f2a9 SF |
591 | mid_entry->multiRsp = |
592 | true; | |
e4eb295d SF |
593 | break; |
594 | } else { | |
595 | /* all parts received */ | |
4b18f2a9 SF |
596 | mid_entry->multiEnd = |
597 | true; | |
50c2f753 | 598 | goto multi_t2_fnd; |
e4eb295d SF |
599 | } |
600 | } else { | |
fb8c4b14 | 601 | if (!isLargeBuf) { |
e4eb295d SF |
602 | cERROR(1,("1st trans2 resp needs bigbuf")); |
603 | /* BB maybe we can fix this up, switch | |
50c2f753 | 604 | to already allocated large buffer? */ |
e4eb295d | 605 | } else { |
cd63499c | 606 | /* Have first buffer */ |
e4eb295d SF |
607 | mid_entry->resp_buf = |
608 | smb_buffer; | |
4b18f2a9 SF |
609 | mid_entry->largeBuf = |
610 | true; | |
e4eb295d SF |
611 | bigbuf = NULL; |
612 | } | |
613 | } | |
614 | break; | |
50c2f753 | 615 | } |
e4eb295d | 616 | mid_entry->resp_buf = smb_buffer; |
4b18f2a9 | 617 | mid_entry->largeBuf = isLargeBuf; |
e4eb295d SF |
618 | multi_t2_fnd: |
619 | task_to_wake = mid_entry->tsk; | |
620 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
621 | #ifdef CONFIG_CIFS_STATS2 |
622 | mid_entry->when_received = jiffies; | |
623 | #endif | |
3a5ff61c SF |
624 | /* so we do not time out requests to server |
625 | which is still responding (since server could | |
626 | be busy but not dead) */ | |
627 | server->lstrp = jiffies; | |
e4eb295d | 628 | break; |
46810cbf | 629 | } |
1da177e4 | 630 | } |
e4eb295d SF |
631 | spin_unlock(&GlobalMid_Lock); |
632 | if (task_to_wake) { | |
cd63499c | 633 | /* Was previous buf put in mpx struct for multi-rsp? */ |
fb8c4b14 | 634 | if (!isMultiRsp) { |
cd63499c | 635 | /* smb buffer will be freed by user thread */ |
26f57364 | 636 | if (isLargeBuf) |
cd63499c | 637 | bigbuf = NULL; |
26f57364 | 638 | else |
cd63499c SF |
639 | smallbuf = NULL; |
640 | } | |
e4eb295d | 641 | wake_up_process(task_to_wake); |
4b18f2a9 SF |
642 | } else if (!is_valid_oplock_break(smb_buffer, server) && |
643 | !isMultiRsp) { | |
50c2f753 SF |
644 | cERROR(1, ("No task to wake, unknown frame received! " |
645 | "NumMids %d", midCount.counter)); | |
646 | cifs_dump_mem("Received Data is: ", (char *)smb_buffer, | |
70ca734a | 647 | sizeof(struct smb_hdr)); |
3979877e SF |
648 | #ifdef CONFIG_CIFS_DEBUG2 |
649 | cifs_dump_detail(smb_buffer); | |
650 | cifs_dump_mids(server); | |
651 | #endif /* CIFS_DEBUG2 */ | |
50c2f753 | 652 | |
e4eb295d SF |
653 | } |
654 | } /* end while !EXITING */ | |
655 | ||
e7ddee90 JL |
656 | /* take it off the list, if it's not already */ |
657 | write_lock(&cifs_tcp_ses_lock); | |
658 | list_del_init(&server->tcp_ses_list); | |
659 | write_unlock(&cifs_tcp_ses_lock); | |
660 | ||
1da177e4 LT |
661 | spin_lock(&GlobalMid_Lock); |
662 | server->tcpStatus = CifsExiting; | |
e691b9d1 | 663 | spin_unlock(&GlobalMid_Lock); |
dbdbb876 | 664 | wake_up_all(&server->response_q); |
e691b9d1 | 665 | |
31ca3bc3 SF |
666 | /* check if we have blocked requests that need to free */ |
667 | /* Note that cifs_max_pending is normally 50, but | |
668 | can be set at module install time to as little as two */ | |
e691b9d1 | 669 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 | 670 | if (atomic_read(&server->inFlight) >= cifs_max_pending) |
31ca3bc3 SF |
671 | atomic_set(&server->inFlight, cifs_max_pending - 1); |
672 | /* We do not want to set the max_pending too low or we | |
673 | could end up with the counter going negative */ | |
1da177e4 | 674 | spin_unlock(&GlobalMid_Lock); |
50c2f753 | 675 | /* Although there should not be any requests blocked on |
1da177e4 | 676 | this queue it can not hurt to be paranoid and try to wake up requests |
09d1db5c | 677 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
678 | to the same server - they now will see the session is in exit state |
679 | and get out of SendReceive. */ | |
680 | wake_up_all(&server->request_q); | |
681 | /* give those requests time to exit */ | |
b8643e1b | 682 | msleep(125); |
50c2f753 | 683 | |
fb8c4b14 | 684 | if (server->ssocket) { |
1da177e4 LT |
685 | sock_release(csocket); |
686 | server->ssocket = NULL; | |
687 | } | |
b8643e1b | 688 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
a8a11d39 MK |
689 | cifs_buf_release(bigbuf); |
690 | if (smallbuf) /* no sense logging a debug message if NULL */ | |
b8643e1b | 691 | cifs_small_buf_release(smallbuf); |
1da177e4 | 692 | |
14fbf50d JL |
693 | /* |
694 | * BB: we shouldn't have to do any of this. It shouldn't be | |
695 | * possible to exit from the thread with active SMB sessions | |
696 | */ | |
697 | read_lock(&cifs_tcp_ses_lock); | |
1da177e4 | 698 | if (list_empty(&server->pending_mid_q)) { |
09d1db5c SF |
699 | /* loop through server session structures attached to this and |
700 | mark them dead */ | |
14fbf50d JL |
701 | list_for_each(tmp, &server->smb_ses_list) { |
702 | ses = list_entry(tmp, struct cifsSesInfo, | |
703 | smb_ses_list); | |
704 | ses->status = CifsExiting; | |
705 | ses->server = NULL; | |
1da177e4 | 706 | } |
14fbf50d | 707 | read_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 708 | } else { |
31ca3bc3 SF |
709 | /* although we can not zero the server struct pointer yet, |
710 | since there are active requests which may depnd on them, | |
711 | mark the corresponding SMB sessions as exiting too */ | |
14fbf50d | 712 | list_for_each(tmp, &server->smb_ses_list) { |
31ca3bc3 | 713 | ses = list_entry(tmp, struct cifsSesInfo, |
14fbf50d JL |
714 | smb_ses_list); |
715 | ses->status = CifsExiting; | |
31ca3bc3 SF |
716 | } |
717 | ||
1da177e4 LT |
718 | spin_lock(&GlobalMid_Lock); |
719 | list_for_each(tmp, &server->pending_mid_q) { | |
720 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
721 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
50c2f753 SF |
722 | cFYI(1, ("Clearing Mid 0x%x - waking up ", |
723 | mid_entry->mid)); | |
1da177e4 | 724 | task_to_wake = mid_entry->tsk; |
26f57364 | 725 | if (task_to_wake) |
1da177e4 | 726 | wake_up_process(task_to_wake); |
1da177e4 LT |
727 | } |
728 | } | |
729 | spin_unlock(&GlobalMid_Lock); | |
14fbf50d | 730 | read_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 731 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 732 | msleep(125); |
1da177e4 LT |
733 | } |
734 | ||
f191401f | 735 | if (!list_empty(&server->pending_mid_q)) { |
50c2f753 | 736 | /* mpx threads have not exited yet give them |
1da177e4 | 737 | at least the smb send timeout time for long ops */ |
31ca3bc3 SF |
738 | /* due to delays on oplock break requests, we need |
739 | to wait at least 45 seconds before giving up | |
740 | on a request getting a response and going ahead | |
741 | and killing cifsd */ | |
1da177e4 | 742 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 743 | msleep(46000); |
1da177e4 LT |
744 | /* if threads still have not exited they are probably never |
745 | coming home not much else we can do but free the memory */ | |
746 | } | |
1da177e4 | 747 | |
31ca3bc3 SF |
748 | /* last chance to mark ses pointers invalid |
749 | if there are any pointing to this (e.g | |
50c2f753 | 750 | if a crazy root user tried to kill cifsd |
31ca3bc3 | 751 | kernel thread explicitly this might happen) */ |
14fbf50d JL |
752 | /* BB: This shouldn't be necessary, see above */ |
753 | read_lock(&cifs_tcp_ses_lock); | |
754 | list_for_each(tmp, &server->smb_ses_list) { | |
755 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); | |
756 | ses->server = NULL; | |
31ca3bc3 | 757 | } |
14fbf50d | 758 | read_unlock(&cifs_tcp_ses_lock); |
31ca3bc3 | 759 | |
c359cf3c | 760 | kfree(server->hostname); |
b1c8d2b4 | 761 | task_to_wake = xchg(&server->tsk, NULL); |
31ca3bc3 | 762 | kfree(server); |
93d0ec85 JL |
763 | |
764 | length = atomic_dec_return(&tcpSesAllocCount); | |
26f57364 SF |
765 | if (length > 0) |
766 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, | |
767 | GFP_KERNEL); | |
50c2f753 | 768 | |
b1c8d2b4 JL |
769 | /* if server->tsk was NULL then wait for a signal before exiting */ |
770 | if (!task_to_wake) { | |
771 | set_current_state(TASK_INTERRUPTIBLE); | |
772 | while (!signal_pending(current)) { | |
773 | schedule(); | |
774 | set_current_state(TASK_INTERRUPTIBLE); | |
775 | } | |
776 | set_current_state(TASK_RUNNING); | |
777 | } | |
778 | ||
0468a2cf | 779 | module_put_and_exit(0); |
1da177e4 LT |
780 | } |
781 | ||
c359cf3c JL |
782 | /* extract the host portion of the UNC string */ |
783 | static char * | |
784 | extract_hostname(const char *unc) | |
785 | { | |
786 | const char *src; | |
787 | char *dst, *delim; | |
788 | unsigned int len; | |
789 | ||
790 | /* skip double chars at beginning of string */ | |
791 | /* BB: check validity of these bytes? */ | |
792 | src = unc + 2; | |
793 | ||
794 | /* delimiter between hostname and sharename is always '\\' now */ | |
795 | delim = strchr(src, '\\'); | |
796 | if (!delim) | |
797 | return ERR_PTR(-EINVAL); | |
798 | ||
799 | len = delim - src; | |
800 | dst = kmalloc((len + 1), GFP_KERNEL); | |
801 | if (dst == NULL) | |
802 | return ERR_PTR(-ENOMEM); | |
803 | ||
804 | memcpy(dst, src, len); | |
805 | dst[len] = '\0'; | |
806 | ||
807 | return dst; | |
808 | } | |
809 | ||
1da177e4 | 810 | static int |
50c2f753 SF |
811 | cifs_parse_mount_options(char *options, const char *devname, |
812 | struct smb_vol *vol) | |
1da177e4 LT |
813 | { |
814 | char *value; | |
815 | char *data; | |
816 | unsigned int temp_len, i, j; | |
817 | char separator[2]; | |
818 | ||
819 | separator[0] = ','; | |
50c2f753 | 820 | separator[1] = 0; |
1da177e4 | 821 | |
12e36b2f | 822 | if (Local_System_Name[0] != 0) |
50c2f753 | 823 | memcpy(vol->source_rfc1001_name, Local_System_Name, 15); |
2cd646a2 | 824 | else { |
12e36b2f | 825 | char *nodename = utsname()->nodename; |
50c2f753 SF |
826 | int n = strnlen(nodename, 15); |
827 | memset(vol->source_rfc1001_name, 0x20, 15); | |
828 | for (i = 0; i < n; i++) { | |
2cd646a2 SF |
829 | /* does not have to be perfect mapping since field is |
830 | informational, only used for servers that do not support | |
831 | port 445 and it can be overridden at mount time */ | |
12e36b2f | 832 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
2cd646a2 | 833 | } |
1da177e4 LT |
834 | } |
835 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
836 | /* null target name indicates to use *SMBSERVR default called name |
837 | if we end up sending RFC1001 session initialize */ | |
838 | vol->target_rfc1001_name[0] = 0; | |
1da177e4 LT |
839 | vol->linux_uid = current->uid; /* current->euid instead? */ |
840 | vol->linux_gid = current->gid; | |
841 | vol->dir_mode = S_IRWXUGO; | |
842 | /* 2767 perms indicate mandatory locking support */ | |
7505e052 | 843 | vol->file_mode = (S_IRWXUGO | S_ISGID) & (~S_IXGRP); |
1da177e4 LT |
844 | |
845 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
4b18f2a9 | 846 | vol->rw = true; |
ac67055e JA |
847 | /* default is always to request posix paths. */ |
848 | vol->posix_paths = 1; | |
849 | ||
1da177e4 LT |
850 | if (!options) |
851 | return 1; | |
852 | ||
50c2f753 | 853 | if (strncmp(options, "sep=", 4) == 0) { |
fb8c4b14 | 854 | if (options[4] != 0) { |
1da177e4 LT |
855 | separator[0] = options[4]; |
856 | options += 5; | |
857 | } else { | |
467a8f8d | 858 | cFYI(1, ("Null separator not allowed")); |
1da177e4 LT |
859 | } |
860 | } | |
50c2f753 | 861 | |
1da177e4 LT |
862 | while ((data = strsep(&options, separator)) != NULL) { |
863 | if (!*data) | |
864 | continue; | |
865 | if ((value = strchr(data, '=')) != NULL) | |
866 | *value++ = '\0'; | |
867 | ||
50c2f753 SF |
868 | /* Have to parse this before we parse for "user" */ |
869 | if (strnicmp(data, "user_xattr", 10) == 0) { | |
1da177e4 | 870 | vol->no_xattr = 0; |
50c2f753 | 871 | } else if (strnicmp(data, "nouser_xattr", 12) == 0) { |
1da177e4 LT |
872 | vol->no_xattr = 1; |
873 | } else if (strnicmp(data, "user", 4) == 0) { | |
4b952a9b | 874 | if (!value) { |
1da177e4 LT |
875 | printk(KERN_WARNING |
876 | "CIFS: invalid or missing username\n"); | |
877 | return 1; /* needs_arg; */ | |
fb8c4b14 | 878 | } else if (!*value) { |
4b952a9b SF |
879 | /* null user, ie anonymous, authentication */ |
880 | vol->nullauth = 1; | |
1da177e4 LT |
881 | } |
882 | if (strnlen(value, 200) < 200) { | |
883 | vol->username = value; | |
884 | } else { | |
885 | printk(KERN_WARNING "CIFS: username too long\n"); | |
886 | return 1; | |
887 | } | |
888 | } else if (strnicmp(data, "pass", 4) == 0) { | |
889 | if (!value) { | |
890 | vol->password = NULL; | |
891 | continue; | |
fb8c4b14 | 892 | } else if (value[0] == 0) { |
1da177e4 LT |
893 | /* check if string begins with double comma |
894 | since that would mean the password really | |
895 | does start with a comma, and would not | |
896 | indicate an empty string */ | |
fb8c4b14 | 897 | if (value[1] != separator[0]) { |
1da177e4 LT |
898 | vol->password = NULL; |
899 | continue; | |
900 | } | |
901 | } | |
902 | temp_len = strlen(value); | |
903 | /* removed password length check, NTLM passwords | |
904 | can be arbitrarily long */ | |
905 | ||
50c2f753 | 906 | /* if comma in password, the string will be |
1da177e4 LT |
907 | prematurely null terminated. Commas in password are |
908 | specified across the cifs mount interface by a double | |
909 | comma ie ,, and a comma used as in other cases ie ',' | |
910 | as a parameter delimiter/separator is single and due | |
911 | to the strsep above is temporarily zeroed. */ | |
912 | ||
913 | /* NB: password legally can have multiple commas and | |
914 | the only illegal character in a password is null */ | |
915 | ||
50c2f753 | 916 | if ((value[temp_len] == 0) && |
09d1db5c | 917 | (value[temp_len+1] == separator[0])) { |
1da177e4 LT |
918 | /* reinsert comma */ |
919 | value[temp_len] = separator[0]; | |
50c2f753 SF |
920 | temp_len += 2; /* move after second comma */ |
921 | while (value[temp_len] != 0) { | |
1da177e4 | 922 | if (value[temp_len] == separator[0]) { |
50c2f753 | 923 | if (value[temp_len+1] == |
09d1db5c SF |
924 | separator[0]) { |
925 | /* skip second comma */ | |
926 | temp_len++; | |
50c2f753 | 927 | } else { |
1da177e4 LT |
928 | /* single comma indicating start |
929 | of next parm */ | |
930 | break; | |
931 | } | |
932 | } | |
933 | temp_len++; | |
934 | } | |
fb8c4b14 | 935 | if (value[temp_len] == 0) { |
1da177e4 LT |
936 | options = NULL; |
937 | } else { | |
938 | value[temp_len] = 0; | |
939 | /* point option to start of next parm */ | |
940 | options = value + temp_len + 1; | |
941 | } | |
50c2f753 | 942 | /* go from value to value + temp_len condensing |
1da177e4 LT |
943 | double commas to singles. Note that this ends up |
944 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 945 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
fb8c4b14 | 946 | if (vol->password == NULL) { |
50c2f753 SF |
947 | printk(KERN_WARNING "CIFS: no memory " |
948 | "for password\n"); | |
433dc24f SF |
949 | return 1; |
950 | } | |
50c2f753 | 951 | for (i = 0, j = 0; i < temp_len; i++, j++) { |
1da177e4 | 952 | vol->password[j] = value[i]; |
fb8c4b14 | 953 | if (value[i] == separator[0] |
09d1db5c | 954 | && value[i+1] == separator[0]) { |
1da177e4 LT |
955 | /* skip second comma */ |
956 | i++; | |
957 | } | |
958 | } | |
959 | vol->password[j] = 0; | |
960 | } else { | |
e915fc49 | 961 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
fb8c4b14 | 962 | if (vol->password == NULL) { |
50c2f753 SF |
963 | printk(KERN_WARNING "CIFS: no memory " |
964 | "for password\n"); | |
433dc24f SF |
965 | return 1; |
966 | } | |
1da177e4 LT |
967 | strcpy(vol->password, value); |
968 | } | |
969 | } else if (strnicmp(data, "ip", 2) == 0) { | |
970 | if (!value || !*value) { | |
971 | vol->UNCip = NULL; | |
972 | } else if (strnlen(value, 35) < 35) { | |
973 | vol->UNCip = value; | |
974 | } else { | |
50c2f753 SF |
975 | printk(KERN_WARNING "CIFS: ip address " |
976 | "too long\n"); | |
1da177e4 LT |
977 | return 1; |
978 | } | |
50c2f753 SF |
979 | } else if (strnicmp(data, "sec", 3) == 0) { |
980 | if (!value || !*value) { | |
981 | cERROR(1, ("no security value specified")); | |
982 | continue; | |
983 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
984 | vol->secFlg |= CIFSSEC_MAY_KRB5 | | |
189acaae | 985 | CIFSSEC_MUST_SIGN; |
bf820679 | 986 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
50c2f753 SF |
987 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
988 | CIFSSEC_MAY_KRB5; */ | |
989 | cERROR(1, ("Krb5 cifs privacy not supported")); | |
bf820679 SF |
990 | return 1; |
991 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 992 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
bf820679 | 993 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 994 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 995 | CIFSSEC_MUST_SIGN; |
bf820679 | 996 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 997 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 998 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 999 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 1000 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
1001 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
1002 | /* ntlm is default so can be turned off too */ | |
750d1151 | 1003 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 1004 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 1005 | /* BB is there a better way to do this? */ |
750d1151 | 1006 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
1007 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
1008 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
50c2f753 | 1009 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 1010 | #endif |
bf820679 | 1011 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 1012 | vol->nullauth = 1; |
50c2f753 SF |
1013 | } else { |
1014 | cERROR(1, ("bad security option: %s", value)); | |
1015 | return 1; | |
1016 | } | |
1da177e4 LT |
1017 | } else if ((strnicmp(data, "unc", 3) == 0) |
1018 | || (strnicmp(data, "target", 6) == 0) | |
1019 | || (strnicmp(data, "path", 4) == 0)) { | |
1020 | if (!value || !*value) { | |
50c2f753 SF |
1021 | printk(KERN_WARNING "CIFS: invalid path to " |
1022 | "network resource\n"); | |
1da177e4 LT |
1023 | return 1; /* needs_arg; */ |
1024 | } | |
1025 | if ((temp_len = strnlen(value, 300)) < 300) { | |
50c2f753 | 1026 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1027 | if (vol->UNC == NULL) |
1da177e4 | 1028 | return 1; |
50c2f753 | 1029 | strcpy(vol->UNC, value); |
1da177e4 LT |
1030 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1031 | vol->UNC[0] = '\\'; | |
1032 | vol->UNC[1] = '\\'; | |
50c2f753 | 1033 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
1da177e4 | 1034 | printk(KERN_WARNING |
50c2f753 SF |
1035 | "CIFS: UNC Path does not begin " |
1036 | "with // or \\\\ \n"); | |
1da177e4 LT |
1037 | return 1; |
1038 | } | |
1039 | } else { | |
1040 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1041 | return 1; | |
1042 | } | |
1043 | } else if ((strnicmp(data, "domain", 3) == 0) | |
1044 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
1045 | if (!value || !*value) { | |
1046 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
1047 | return 1; /* needs_arg; */ | |
1048 | } | |
1049 | /* BB are there cases in which a comma can be valid in | |
1050 | a domain name and need special handling? */ | |
3979877e | 1051 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
1052 | vol->domainname = value; |
1053 | cFYI(1, ("Domain name set")); | |
1054 | } else { | |
50c2f753 SF |
1055 | printk(KERN_WARNING "CIFS: domain name too " |
1056 | "long\n"); | |
1da177e4 LT |
1057 | return 1; |
1058 | } | |
50c2f753 SF |
1059 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
1060 | if (!value || !*value) { | |
1061 | printk(KERN_WARNING | |
1062 | "CIFS: invalid path prefix\n"); | |
1063 | return 1; /* needs_argument */ | |
1064 | } | |
1065 | if ((temp_len = strnlen(value, 1024)) < 1024) { | |
4523cc30 | 1066 | if (value[0] != '/') |
2fe87f02 | 1067 | temp_len++; /* missing leading slash */ |
50c2f753 SF |
1068 | vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); |
1069 | if (vol->prepath == NULL) | |
1070 | return 1; | |
4523cc30 | 1071 | if (value[0] != '/') { |
2fe87f02 | 1072 | vol->prepath[0] = '/'; |
50c2f753 | 1073 | strcpy(vol->prepath+1, value); |
2fe87f02 | 1074 | } else |
50c2f753 SF |
1075 | strcpy(vol->prepath, value); |
1076 | cFYI(1, ("prefix path %s", vol->prepath)); | |
1077 | } else { | |
1078 | printk(KERN_WARNING "CIFS: prefix too long\n"); | |
1079 | return 1; | |
1080 | } | |
1da177e4 LT |
1081 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
1082 | if (!value || !*value) { | |
63135e08 SF |
1083 | printk(KERN_WARNING "CIFS: invalid iocharset " |
1084 | "specified\n"); | |
1da177e4 LT |
1085 | return 1; /* needs_arg; */ |
1086 | } | |
1087 | if (strnlen(value, 65) < 65) { | |
50c2f753 | 1088 | if (strnicmp(value, "default", 7)) |
1da177e4 | 1089 | vol->iocharset = value; |
50c2f753 SF |
1090 | /* if iocharset not set then load_nls_default |
1091 | is used by caller */ | |
1092 | cFYI(1, ("iocharset set to %s", value)); | |
1da177e4 | 1093 | } else { |
63135e08 SF |
1094 | printk(KERN_WARNING "CIFS: iocharset name " |
1095 | "too long.\n"); | |
1da177e4 LT |
1096 | return 1; |
1097 | } | |
1098 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1099 | if (value && *value) { | |
1100 | vol->linux_uid = | |
1101 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1102 | vol->override_uid = 1; |
1da177e4 LT |
1103 | } |
1104 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1105 | if (value && *value) { | |
1106 | vol->linux_gid = | |
1107 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1108 | vol->override_gid = 1; |
1da177e4 LT |
1109 | } |
1110 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1111 | if (value && *value) { | |
1112 | vol->file_mode = | |
1113 | simple_strtoul(value, &value, 0); | |
1114 | } | |
1115 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1116 | if (value && *value) { | |
1117 | vol->dir_mode = | |
1118 | simple_strtoul(value, &value, 0); | |
1119 | } | |
1120 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1121 | if (value && *value) { | |
1122 | vol->dir_mode = | |
1123 | simple_strtoul(value, &value, 0); | |
1124 | } | |
1125 | } else if (strnicmp(data, "port", 4) == 0) { | |
1126 | if (value && *value) { | |
1127 | vol->port = | |
1128 | simple_strtoul(value, &value, 0); | |
1129 | } | |
1130 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1131 | if (value && *value) { | |
1132 | vol->rsize = | |
1133 | simple_strtoul(value, &value, 0); | |
1134 | } | |
1135 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1136 | if (value && *value) { | |
1137 | vol->wsize = | |
1138 | simple_strtoul(value, &value, 0); | |
1139 | } | |
1140 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1141 | if (value && *value) { | |
1142 | vol->sockopt = | |
1143 | simple_strtoul(value, &value, 0); | |
1144 | } | |
1145 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1146 | if (!value || !*value || (*value == ' ')) { | |
63135e08 | 1147 | cFYI(1, ("invalid (empty) netbiosname")); |
1da177e4 | 1148 | } else { |
50c2f753 SF |
1149 | memset(vol->source_rfc1001_name, 0x20, 15); |
1150 | for (i = 0; i < 15; i++) { | |
1151 | /* BB are there cases in which a comma can be | |
1da177e4 LT |
1152 | valid in this workstation netbios name (and need |
1153 | special handling)? */ | |
1154 | ||
1155 | /* We do not uppercase netbiosname for user */ | |
50c2f753 | 1156 | if (value[i] == 0) |
1da177e4 | 1157 | break; |
50c2f753 SF |
1158 | else |
1159 | vol->source_rfc1001_name[i] = | |
1160 | value[i]; | |
1da177e4 LT |
1161 | } |
1162 | /* The string has 16th byte zero still from | |
1163 | set at top of the function */ | |
50c2f753 SF |
1164 | if ((i == 15) && (value[i] != 0)) |
1165 | printk(KERN_WARNING "CIFS: netbiosname" | |
1166 | " longer than 15 truncated.\n"); | |
a10faeb2 SF |
1167 | } |
1168 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1169 | /* servernetbiosname specified override *SMBSERVER */ | |
1170 | if (!value || !*value || (*value == ' ')) { | |
467a8f8d | 1171 | cFYI(1, ("empty server netbiosname specified")); |
a10faeb2 SF |
1172 | } else { |
1173 | /* last byte, type, is 0x20 for servr type */ | |
50c2f753 | 1174 | memset(vol->target_rfc1001_name, 0x20, 16); |
a10faeb2 | 1175 | |
50c2f753 | 1176 | for (i = 0; i < 15; i++) { |
a10faeb2 | 1177 | /* BB are there cases in which a comma can be |
50c2f753 SF |
1178 | valid in this workstation netbios name |
1179 | (and need special handling)? */ | |
a10faeb2 | 1180 | |
50c2f753 SF |
1181 | /* user or mount helper must uppercase |
1182 | the netbiosname */ | |
1183 | if (value[i] == 0) | |
a10faeb2 SF |
1184 | break; |
1185 | else | |
50c2f753 SF |
1186 | vol->target_rfc1001_name[i] = |
1187 | value[i]; | |
a10faeb2 SF |
1188 | } |
1189 | /* The string has 16th byte zero still from | |
1190 | set at top of the function */ | |
50c2f753 SF |
1191 | if ((i == 15) && (value[i] != 0)) |
1192 | printk(KERN_WARNING "CIFS: server net" | |
1193 | "biosname longer than 15 truncated.\n"); | |
1da177e4 LT |
1194 | } |
1195 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1196 | /* ignore */ | |
1197 | } else if (strnicmp(data, "version", 3) == 0) { | |
1198 | /* ignore */ | |
50c2f753 | 1199 | } else if (strnicmp(data, "guest", 5) == 0) { |
1da177e4 LT |
1200 | /* ignore */ |
1201 | } else if (strnicmp(data, "rw", 2) == 0) { | |
4b18f2a9 | 1202 | vol->rw = true; |
edf1ae40 SF |
1203 | } else if (strnicmp(data, "noblocksend", 11) == 0) { |
1204 | vol->noblocksnd = 1; | |
1205 | } else if (strnicmp(data, "noautotune", 10) == 0) { | |
1206 | vol->noautotune = 1; | |
1da177e4 LT |
1207 | } else if ((strnicmp(data, "suid", 4) == 0) || |
1208 | (strnicmp(data, "nosuid", 6) == 0) || | |
1209 | (strnicmp(data, "exec", 4) == 0) || | |
1210 | (strnicmp(data, "noexec", 6) == 0) || | |
1211 | (strnicmp(data, "nodev", 5) == 0) || | |
1212 | (strnicmp(data, "noauto", 6) == 0) || | |
1213 | (strnicmp(data, "dev", 3) == 0)) { | |
1214 | /* The mount tool or mount.cifs helper (if present) | |
50c2f753 SF |
1215 | uses these opts to set flags, and the flags are read |
1216 | by the kernel vfs layer before we get here (ie | |
1217 | before read super) so there is no point trying to | |
1218 | parse these options again and set anything and it | |
1219 | is ok to just ignore them */ | |
1da177e4 LT |
1220 | continue; |
1221 | } else if (strnicmp(data, "ro", 2) == 0) { | |
4b18f2a9 | 1222 | vol->rw = false; |
1da177e4 LT |
1223 | } else if (strnicmp(data, "hard", 4) == 0) { |
1224 | vol->retry = 1; | |
1225 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1226 | vol->retry = 0; | |
1227 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1228 | vol->noperm = 0; | |
1229 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1230 | vol->noperm = 1; | |
6a0b4824 SF |
1231 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1232 | vol->remap = 1; | |
1233 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1234 | vol->remap = 0; | |
50c2f753 SF |
1235 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1236 | vol->sfu_emul = 1; | |
1237 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1238 | vol->sfu_emul = 0; | |
2c1b8615 SF |
1239 | } else if (strnicmp(data, "nodfs", 5) == 0) { |
1240 | vol->nodfs = 1; | |
ac67055e JA |
1241 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1242 | vol->posix_paths = 1; | |
1243 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1244 | vol->posix_paths = 0; | |
c18c842b SF |
1245 | } else if (strnicmp(data, "nounix", 6) == 0) { |
1246 | vol->no_linux_ext = 1; | |
1247 | } else if (strnicmp(data, "nolinux", 7) == 0) { | |
1248 | vol->no_linux_ext = 1; | |
50c2f753 | 1249 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
a10faeb2 | 1250 | (strnicmp(data, "ignorecase", 10) == 0)) { |
50c2f753 | 1251 | vol->nocase = 1; |
c46fa8ac SF |
1252 | } else if (strnicmp(data, "brl", 3) == 0) { |
1253 | vol->nobrl = 0; | |
50c2f753 | 1254 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1255 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1256 | vol->nobrl = 1; |
d3485d37 SF |
1257 | /* turn off mandatory locking in mode |
1258 | if remote locking is turned off since the | |
1259 | local vfs will do advisory */ | |
50c2f753 SF |
1260 | if (vol->file_mode == |
1261 | (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
d3485d37 | 1262 | vol->file_mode = S_IALLUGO; |
1da177e4 LT |
1263 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1264 | vol->setuids = 1; | |
1265 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1266 | vol->setuids = 0; | |
d0a9c078 JL |
1267 | } else if (strnicmp(data, "dynperm", 7) == 0) { |
1268 | vol->dynperm = true; | |
1269 | } else if (strnicmp(data, "nodynperm", 9) == 0) { | |
1270 | vol->dynperm = false; | |
1da177e4 LT |
1271 | } else if (strnicmp(data, "nohard", 6) == 0) { |
1272 | vol->retry = 0; | |
1273 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1274 | vol->retry = 1; | |
1275 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1276 | vol->intr = 0; | |
1277 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1278 | vol->intr = 1; | |
50c2f753 | 1279 | } else if (strnicmp(data, "serverino", 7) == 0) { |
1da177e4 | 1280 | vol->server_ino = 1; |
50c2f753 | 1281 | } else if (strnicmp(data, "noserverino", 9) == 0) { |
1da177e4 | 1282 | vol->server_ino = 0; |
50c2f753 | 1283 | } else if (strnicmp(data, "cifsacl", 7) == 0) { |
0a4b92c0 SF |
1284 | vol->cifs_acl = 1; |
1285 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1286 | vol->cifs_acl = 0; | |
50c2f753 | 1287 | } else if (strnicmp(data, "acl", 3) == 0) { |
1da177e4 | 1288 | vol->no_psx_acl = 0; |
50c2f753 | 1289 | } else if (strnicmp(data, "noacl", 5) == 0) { |
1da177e4 | 1290 | vol->no_psx_acl = 1; |
84210e91 SF |
1291 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
1292 | } else if (strnicmp(data, "locallease", 6) == 0) { | |
1293 | vol->local_lease = 1; | |
1294 | #endif | |
50c2f753 | 1295 | } else if (strnicmp(data, "sign", 4) == 0) { |
750d1151 | 1296 | vol->secFlg |= CIFSSEC_MUST_SIGN; |
95b1cb90 SF |
1297 | } else if (strnicmp(data, "seal", 4) == 0) { |
1298 | /* we do not do the following in secFlags because seal | |
1299 | is a per tree connection (mount) not a per socket | |
1300 | or per-smb connection option in the protocol */ | |
1301 | /* vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
1302 | vol->seal = 1; | |
50c2f753 | 1303 | } else if (strnicmp(data, "direct", 6) == 0) { |
1da177e4 | 1304 | vol->direct_io = 1; |
50c2f753 | 1305 | } else if (strnicmp(data, "forcedirectio", 13) == 0) { |
1da177e4 | 1306 | vol->direct_io = 1; |
50c2f753 | 1307 | } else if (strnicmp(data, "in6_addr", 8) == 0) { |
1da177e4 LT |
1308 | if (!value || !*value) { |
1309 | vol->in6_addr = NULL; | |
1310 | } else if (strnlen(value, 49) == 48) { | |
1311 | vol->in6_addr = value; | |
1312 | } else { | |
50c2f753 SF |
1313 | printk(KERN_WARNING "CIFS: ip v6 address not " |
1314 | "48 characters long\n"); | |
1da177e4 LT |
1315 | return 1; |
1316 | } | |
1317 | } else if (strnicmp(data, "noac", 4) == 0) { | |
50c2f753 SF |
1318 | printk(KERN_WARNING "CIFS: Mount option noac not " |
1319 | "supported. Instead set " | |
1320 | "/proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1da177e4 | 1321 | } else |
50c2f753 SF |
1322 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n", |
1323 | data); | |
1da177e4 LT |
1324 | } |
1325 | if (vol->UNC == NULL) { | |
4523cc30 | 1326 | if (devname == NULL) { |
50c2f753 SF |
1327 | printk(KERN_WARNING "CIFS: Missing UNC name for mount " |
1328 | "target\n"); | |
1da177e4 LT |
1329 | return 1; |
1330 | } | |
1331 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
50c2f753 | 1332 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1333 | if (vol->UNC == NULL) |
1da177e4 | 1334 | return 1; |
50c2f753 | 1335 | strcpy(vol->UNC, devname); |
1da177e4 LT |
1336 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1337 | vol->UNC[0] = '\\'; | |
1338 | vol->UNC[1] = '\\'; | |
1339 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
50c2f753 SF |
1340 | printk(KERN_WARNING "CIFS: UNC Path does not " |
1341 | "begin with // or \\\\ \n"); | |
1da177e4 LT |
1342 | return 1; |
1343 | } | |
7c5e628f IM |
1344 | value = strpbrk(vol->UNC+2, "/\\"); |
1345 | if (value) | |
1346 | *value = '\\'; | |
1da177e4 LT |
1347 | } else { |
1348 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1349 | return 1; | |
1350 | } | |
1351 | } | |
fb8c4b14 | 1352 | if (vol->UNCip == NULL) |
1da177e4 LT |
1353 | vol->UNCip = &vol->UNC[2]; |
1354 | ||
1355 | return 0; | |
1356 | } | |
1357 | ||
e7ddee90 JL |
1358 | static struct TCP_Server_Info * |
1359 | cifs_find_tcp_session(struct sockaddr *addr) | |
1da177e4 LT |
1360 | { |
1361 | struct list_head *tmp; | |
e7ddee90 JL |
1362 | struct TCP_Server_Info *server; |
1363 | struct sockaddr_in *addr4 = (struct sockaddr_in *) addr; | |
1364 | struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *) addr; | |
1365 | ||
1366 | write_lock(&cifs_tcp_ses_lock); | |
1367 | list_for_each(tmp, &cifs_tcp_ses_list) { | |
1368 | server = list_entry(tmp, struct TCP_Server_Info, | |
1369 | tcp_ses_list); | |
e7ddee90 JL |
1370 | /* |
1371 | * the demux thread can exit on its own while still in CifsNew | |
1372 | * so don't accept any sockets in that state. Since the | |
1373 | * tcpStatus never changes back to CifsNew it's safe to check | |
1374 | * for this without a lock. | |
1375 | */ | |
1376 | if (server->tcpStatus == CifsNew) | |
1b20d672 CG |
1377 | continue; |
1378 | ||
e7ddee90 JL |
1379 | if (addr->sa_family == AF_INET && |
1380 | (addr4->sin_addr.s_addr != | |
1381 | server->addr.sockAddr.sin_addr.s_addr)) | |
1382 | continue; | |
1383 | else if (addr->sa_family == AF_INET6 && | |
1384 | memcmp(&server->addr.sockAddr6.sin6_addr, | |
1385 | &addr6->sin6_addr, sizeof(addr6->sin6_addr))) | |
1386 | continue; | |
1b20d672 | 1387 | |
e7ddee90 JL |
1388 | ++server->srv_count; |
1389 | write_unlock(&cifs_tcp_ses_lock); | |
d82c2df5 | 1390 | cFYI(1, ("Existing tcp session with server found")); |
e7ddee90 | 1391 | return server; |
1da177e4 | 1392 | } |
e7ddee90 | 1393 | write_unlock(&cifs_tcp_ses_lock); |
1da177e4 LT |
1394 | return NULL; |
1395 | } | |
1396 | ||
14fbf50d | 1397 | static void |
e7ddee90 | 1398 | cifs_put_tcp_session(struct TCP_Server_Info *server) |
1da177e4 | 1399 | { |
e7ddee90 | 1400 | struct task_struct *task; |
dea570e0 | 1401 | |
e7ddee90 JL |
1402 | write_lock(&cifs_tcp_ses_lock); |
1403 | if (--server->srv_count > 0) { | |
1404 | write_unlock(&cifs_tcp_ses_lock); | |
1405 | return; | |
1406 | } | |
dea570e0 | 1407 | |
e7ddee90 JL |
1408 | list_del_init(&server->tcp_ses_list); |
1409 | write_unlock(&cifs_tcp_ses_lock); | |
dea570e0 | 1410 | |
e7ddee90 JL |
1411 | spin_lock(&GlobalMid_Lock); |
1412 | server->tcpStatus = CifsExiting; | |
1413 | spin_unlock(&GlobalMid_Lock); | |
dea570e0 | 1414 | |
e7ddee90 JL |
1415 | task = xchg(&server->tsk, NULL); |
1416 | if (task) | |
1417 | force_sig(SIGKILL, task); | |
1da177e4 LT |
1418 | } |
1419 | ||
14fbf50d JL |
1420 | static struct cifsSesInfo * |
1421 | cifs_find_smb_ses(struct TCP_Server_Info *server, char *username) | |
1422 | { | |
1423 | struct list_head *tmp; | |
1424 | struct cifsSesInfo *ses; | |
1425 | ||
1426 | write_lock(&cifs_tcp_ses_lock); | |
1427 | list_for_each(tmp, &server->smb_ses_list) { | |
1428 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); | |
1429 | if (strncmp(ses->userName, username, MAX_USERNAME_SIZE)) | |
1430 | continue; | |
1431 | ||
1432 | ++ses->ses_count; | |
1433 | write_unlock(&cifs_tcp_ses_lock); | |
1434 | return ses; | |
1435 | } | |
1436 | write_unlock(&cifs_tcp_ses_lock); | |
1437 | return NULL; | |
1438 | } | |
1439 | ||
1440 | static void | |
1441 | cifs_put_smb_ses(struct cifsSesInfo *ses) | |
1442 | { | |
1443 | int xid; | |
1444 | struct TCP_Server_Info *server = ses->server; | |
1445 | ||
1446 | write_lock(&cifs_tcp_ses_lock); | |
1447 | if (--ses->ses_count > 0) { | |
1448 | write_unlock(&cifs_tcp_ses_lock); | |
1449 | return; | |
1450 | } | |
1451 | ||
1452 | list_del_init(&ses->smb_ses_list); | |
1453 | write_unlock(&cifs_tcp_ses_lock); | |
1454 | ||
1455 | if (ses->status == CifsGood) { | |
1456 | xid = GetXid(); | |
1457 | CIFSSMBLogoff(xid, ses); | |
1458 | _FreeXid(xid); | |
1459 | } | |
1460 | sesInfoFree(ses); | |
1461 | cifs_put_tcp_session(server); | |
1462 | } | |
1463 | ||
f1987b44 JL |
1464 | static struct cifsTconInfo * |
1465 | cifs_find_tcon(struct cifsSesInfo *ses, const char *unc) | |
1466 | { | |
1467 | struct list_head *tmp; | |
1468 | struct cifsTconInfo *tcon; | |
1469 | ||
1470 | write_lock(&cifs_tcp_ses_lock); | |
1471 | list_for_each(tmp, &ses->tcon_list) { | |
1472 | tcon = list_entry(tmp, struct cifsTconInfo, tcon_list); | |
1473 | if (tcon->tidStatus == CifsExiting) | |
1474 | continue; | |
1475 | if (strncmp(tcon->treeName, unc, MAX_TREE_SIZE)) | |
1476 | continue; | |
1477 | ||
1478 | ++tcon->tc_count; | |
1479 | write_unlock(&cifs_tcp_ses_lock); | |
1480 | return tcon; | |
1481 | } | |
1482 | write_unlock(&cifs_tcp_ses_lock); | |
1483 | return NULL; | |
1484 | } | |
1485 | ||
1486 | static void | |
1487 | cifs_put_tcon(struct cifsTconInfo *tcon) | |
1488 | { | |
1489 | int xid; | |
1490 | struct cifsSesInfo *ses = tcon->ses; | |
1491 | ||
1492 | write_lock(&cifs_tcp_ses_lock); | |
1493 | if (--tcon->tc_count > 0) { | |
1494 | write_unlock(&cifs_tcp_ses_lock); | |
1495 | return; | |
1496 | } | |
1497 | ||
1498 | list_del_init(&tcon->tcon_list); | |
1499 | write_unlock(&cifs_tcp_ses_lock); | |
1500 | ||
1501 | xid = GetXid(); | |
1502 | CIFSSMBTDis(xid, tcon); | |
1503 | _FreeXid(xid); | |
1504 | ||
1505 | DeleteTconOplockQEntries(tcon); | |
1506 | tconInfoFree(tcon); | |
1507 | cifs_put_smb_ses(ses); | |
1508 | } | |
1509 | ||
1da177e4 | 1510 | int |
50c2f753 SF |
1511 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, |
1512 | const struct nls_table *nls_codepage, unsigned int *pnum_referrals, | |
366781c1 | 1513 | struct dfs_info3_param **preferrals, int remap) |
1da177e4 LT |
1514 | { |
1515 | char *temp_unc; | |
1516 | int rc = 0; | |
1517 | ||
1518 | *pnum_referrals = 0; | |
366781c1 | 1519 | *preferrals = NULL; |
1da177e4 LT |
1520 | |
1521 | if (pSesInfo->ipc_tid == 0) { | |
1522 | temp_unc = kmalloc(2 /* for slashes */ + | |
50c2f753 SF |
1523 | strnlen(pSesInfo->serverName, |
1524 | SERVER_NAME_LEN_WITH_NULL * 2) | |
1da177e4 LT |
1525 | + 1 + 4 /* slash IPC$ */ + 2, |
1526 | GFP_KERNEL); | |
1527 | if (temp_unc == NULL) | |
1528 | return -ENOMEM; | |
1529 | temp_unc[0] = '\\'; | |
1530 | temp_unc[1] = '\\'; | |
1531 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1532 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1533 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1534 | cFYI(1, | |
50c2f753 | 1535 | ("CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid)); |
1da177e4 LT |
1536 | kfree(temp_unc); |
1537 | } | |
1538 | if (rc == 0) | |
c2cf07d5 | 1539 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, |
737b758c | 1540 | pnum_referrals, nls_codepage, remap); |
366781c1 SF |
1541 | /* BB map targetUNCs to dfs_info3 structures, here or |
1542 | in CIFSGetDFSRefer BB */ | |
1da177e4 LT |
1543 | |
1544 | return rc; | |
1545 | } | |
1546 | ||
09e50d55 JL |
1547 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
1548 | static struct lock_class_key cifs_key[2]; | |
1549 | static struct lock_class_key cifs_slock_key[2]; | |
1550 | ||
1551 | static inline void | |
1552 | cifs_reclassify_socket4(struct socket *sock) | |
1553 | { | |
1554 | struct sock *sk = sock->sk; | |
1555 | BUG_ON(sock_owned_by_user(sk)); | |
1556 | sock_lock_init_class_and_name(sk, "slock-AF_INET-CIFS", | |
1557 | &cifs_slock_key[0], "sk_lock-AF_INET-CIFS", &cifs_key[0]); | |
1558 | } | |
1559 | ||
1560 | static inline void | |
1561 | cifs_reclassify_socket6(struct socket *sock) | |
1562 | { | |
1563 | struct sock *sk = sock->sk; | |
1564 | BUG_ON(sock_owned_by_user(sk)); | |
1565 | sock_lock_init_class_and_name(sk, "slock-AF_INET6-CIFS", | |
1566 | &cifs_slock_key[1], "sk_lock-AF_INET6-CIFS", &cifs_key[1]); | |
1567 | } | |
1568 | #else | |
1569 | static inline void | |
1570 | cifs_reclassify_socket4(struct socket *sock) | |
1571 | { | |
1572 | } | |
1573 | ||
1574 | static inline void | |
1575 | cifs_reclassify_socket6(struct socket *sock) | |
1576 | { | |
1577 | } | |
1578 | #endif | |
1579 | ||
1da177e4 | 1580 | /* See RFC1001 section 14 on representation of Netbios names */ |
50c2f753 | 1581 | static void rfc1002mangle(char *target, char *source, unsigned int length) |
1da177e4 | 1582 | { |
50c2f753 | 1583 | unsigned int i, j; |
1da177e4 | 1584 | |
50c2f753 | 1585 | for (i = 0, j = 0; i < (length); i++) { |
1da177e4 LT |
1586 | /* mask a nibble at a time and encode */ |
1587 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1588 | target[j+1] = 'A' + (0x0F & source[i]); | |
50c2f753 | 1589 | j += 2; |
1da177e4 LT |
1590 | } |
1591 | ||
1592 | } | |
1593 | ||
1594 | ||
1595 | static int | |
50c2f753 | 1596 | ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, |
edf1ae40 SF |
1597 | char *netbios_name, char *target_name, |
1598 | bool noblocksnd, bool noautotune) | |
1da177e4 LT |
1599 | { |
1600 | int rc = 0; | |
1601 | int connected = 0; | |
1602 | __be16 orig_port = 0; | |
1603 | ||
fb8c4b14 | 1604 | if (*csocket == NULL) { |
50c2f753 SF |
1605 | rc = sock_create_kern(PF_INET, SOCK_STREAM, |
1606 | IPPROTO_TCP, csocket); | |
1da177e4 | 1607 | if (rc < 0) { |
50c2f753 | 1608 | cERROR(1, ("Error %d creating socket", rc)); |
1da177e4 LT |
1609 | *csocket = NULL; |
1610 | return rc; | |
1611 | } else { | |
1612 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
467a8f8d | 1613 | cFYI(1, ("Socket created")); |
50c2f753 | 1614 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
09e50d55 | 1615 | cifs_reclassify_socket4(*csocket); |
1da177e4 LT |
1616 | } |
1617 | } | |
1618 | ||
1619 | psin_server->sin_family = AF_INET; | |
fb8c4b14 | 1620 | if (psin_server->sin_port) { /* user overrode default port */ |
1da177e4 LT |
1621 | rc = (*csocket)->ops->connect(*csocket, |
1622 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1623 | sizeof(struct sockaddr_in), 0); |
1da177e4 LT |
1624 | if (rc >= 0) |
1625 | connected = 1; | |
50c2f753 | 1626 | } |
1da177e4 | 1627 | |
fb8c4b14 | 1628 | if (!connected) { |
50c2f753 | 1629 | /* save original port so we can retry user specified port |
1da177e4 LT |
1630 | later if fall back ports fail this time */ |
1631 | orig_port = psin_server->sin_port; | |
1632 | ||
1633 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1634 | if (psin_server->sin_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1635 | psin_server->sin_port = htons(CIFS_PORT); |
1636 | ||
1637 | rc = (*csocket)->ops->connect(*csocket, | |
1638 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1639 | sizeof(struct sockaddr_in), 0); |
1da177e4 LT |
1640 | if (rc >= 0) |
1641 | connected = 1; | |
1642 | } | |
1643 | } | |
1644 | if (!connected) { | |
1645 | psin_server->sin_port = htons(RFC1001_PORT); | |
1646 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
50c2f753 | 1647 | psin_server, |
6345a3a8 | 1648 | sizeof(struct sockaddr_in), 0); |
50c2f753 | 1649 | if (rc >= 0) |
1da177e4 LT |
1650 | connected = 1; |
1651 | } | |
1652 | ||
1653 | /* give up here - unless we want to retry on different | |
1654 | protocol families some day */ | |
1655 | if (!connected) { | |
fb8c4b14 | 1656 | if (orig_port) |
1da177e4 | 1657 | psin_server->sin_port = orig_port; |
50c2f753 | 1658 | cFYI(1, ("Error %d connecting to server via ipv4", rc)); |
1da177e4 LT |
1659 | sock_release(*csocket); |
1660 | *csocket = NULL; | |
1661 | return rc; | |
1662 | } | |
50c2f753 SF |
1663 | /* Eventually check for other socket options to change from |
1664 | the default. sock_setsockopt not used because it expects | |
1da177e4 | 1665 | user space buffer */ |
50c2f753 SF |
1666 | cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", |
1667 | (*csocket)->sk->sk_sndbuf, | |
b387eaeb | 1668 | (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo)); |
1da177e4 | 1669 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; |
edf1ae40 SF |
1670 | if (!noblocksnd) |
1671 | (*csocket)->sk->sk_sndtimeo = 3 * HZ; | |
1672 | ||
b387eaeb | 1673 | /* make the bufsizes depend on wsize/rsize and max requests */ |
edf1ae40 SF |
1674 | if (noautotune) { |
1675 | if ((*csocket)->sk->sk_sndbuf < (200 * 1024)) | |
1676 | (*csocket)->sk->sk_sndbuf = 200 * 1024; | |
1677 | if ((*csocket)->sk->sk_rcvbuf < (140 * 1024)) | |
1678 | (*csocket)->sk->sk_rcvbuf = 140 * 1024; | |
1679 | } | |
1da177e4 LT |
1680 | |
1681 | /* send RFC1001 sessinit */ | |
fb8c4b14 | 1682 | if (psin_server->sin_port == htons(RFC1001_PORT)) { |
1da177e4 | 1683 | /* some servers require RFC1001 sessinit before sending |
50c2f753 | 1684 | negprot - BB check reconnection in case where second |
1da177e4 | 1685 | sessinit is sent but no second negprot */ |
50c2f753 SF |
1686 | struct rfc1002_session_packet *ses_init_buf; |
1687 | struct smb_hdr *smb_buf; | |
1688 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), | |
1689 | GFP_KERNEL); | |
fb8c4b14 | 1690 | if (ses_init_buf) { |
1da177e4 | 1691 | ses_init_buf->trailer.session_req.called_len = 32; |
fb8c4b14 | 1692 | if (target_name && (target_name[0] != 0)) { |
a10faeb2 SF |
1693 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, |
1694 | target_name, 16); | |
1695 | } else { | |
1696 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
50c2f753 | 1697 | DEFAULT_CIFS_CALLED_NAME, 16); |
a10faeb2 SF |
1698 | } |
1699 | ||
1da177e4 LT |
1700 | ses_init_buf->trailer.session_req.calling_len = 32; |
1701 | /* calling name ends in null (byte 16) from old smb | |
1702 | convention. */ | |
50c2f753 | 1703 | if (netbios_name && (netbios_name[0] != 0)) { |
1da177e4 | 1704 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, |
50c2f753 | 1705 | netbios_name, 16); |
1da177e4 LT |
1706 | } else { |
1707 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
50c2f753 | 1708 | "LINUX_CIFS_CLNT", 16); |
1da177e4 LT |
1709 | } |
1710 | ses_init_buf->trailer.session_req.scope1 = 0; | |
1711 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1712 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1713 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1714 | smb_buf->smb_buf_length = 0x81000044; | |
1715 | rc = smb_send(*csocket, smb_buf, 0x44, | |
edf1ae40 | 1716 | (struct sockaddr *)psin_server, noblocksnd); |
1da177e4 | 1717 | kfree(ses_init_buf); |
50c2f753 | 1718 | msleep(1); /* RFC1001 layer in at least one server |
083d3a2c SF |
1719 | requires very short break before negprot |
1720 | presumably because not expecting negprot | |
1721 | to follow so fast. This is a simple | |
50c2f753 | 1722 | solution that works without |
083d3a2c SF |
1723 | complicating the code and causes no |
1724 | significant slowing down on mount | |
1725 | for everyone else */ | |
1da177e4 | 1726 | } |
50c2f753 | 1727 | /* else the negprot may still work without this |
1da177e4 | 1728 | even though malloc failed */ |
50c2f753 | 1729 | |
1da177e4 | 1730 | } |
50c2f753 | 1731 | |
1da177e4 LT |
1732 | return rc; |
1733 | } | |
1734 | ||
1735 | static int | |
edf1ae40 SF |
1736 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket, |
1737 | bool noblocksnd) | |
1da177e4 LT |
1738 | { |
1739 | int rc = 0; | |
1740 | int connected = 0; | |
1741 | __be16 orig_port = 0; | |
1742 | ||
fb8c4b14 | 1743 | if (*csocket == NULL) { |
50c2f753 SF |
1744 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, |
1745 | IPPROTO_TCP, csocket); | |
1da177e4 | 1746 | if (rc < 0) { |
50c2f753 | 1747 | cERROR(1, ("Error %d creating ipv6 socket", rc)); |
1da177e4 LT |
1748 | *csocket = NULL; |
1749 | return rc; | |
1750 | } else { | |
1751 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
fb8c4b14 | 1752 | cFYI(1, ("ipv6 Socket created")); |
1da177e4 | 1753 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
09e50d55 | 1754 | cifs_reclassify_socket6(*csocket); |
1da177e4 LT |
1755 | } |
1756 | } | |
1757 | ||
1758 | psin_server->sin6_family = AF_INET6; | |
1759 | ||
fb8c4b14 | 1760 | if (psin_server->sin6_port) { /* user overrode default port */ |
1da177e4 LT |
1761 | rc = (*csocket)->ops->connect(*csocket, |
1762 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1763 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1764 | if (rc >= 0) |
1765 | connected = 1; | |
50c2f753 | 1766 | } |
1da177e4 | 1767 | |
fb8c4b14 | 1768 | if (!connected) { |
50c2f753 | 1769 | /* save original port so we can retry user specified port |
1da177e4 LT |
1770 | later if fall back ports fail this time */ |
1771 | ||
1772 | orig_port = psin_server->sin6_port; | |
1773 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1774 | if (psin_server->sin6_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1775 | psin_server->sin6_port = htons(CIFS_PORT); |
1776 | ||
1777 | rc = (*csocket)->ops->connect(*csocket, | |
1778 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1779 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1780 | if (rc >= 0) |
1781 | connected = 1; | |
1782 | } | |
1783 | } | |
1784 | if (!connected) { | |
1785 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1786 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
6345a3a8 | 1787 | psin_server, sizeof(struct sockaddr_in6), 0); |
50c2f753 | 1788 | if (rc >= 0) |
1da177e4 LT |
1789 | connected = 1; |
1790 | } | |
1791 | ||
1792 | /* give up here - unless we want to retry on different | |
1793 | protocol families some day */ | |
1794 | if (!connected) { | |
fb8c4b14 | 1795 | if (orig_port) |
1da177e4 | 1796 | psin_server->sin6_port = orig_port; |
50c2f753 | 1797 | cFYI(1, ("Error %d connecting to server via ipv6", rc)); |
1da177e4 LT |
1798 | sock_release(*csocket); |
1799 | *csocket = NULL; | |
1800 | return rc; | |
1801 | } | |
50c2f753 SF |
1802 | /* Eventually check for other socket options to change from |
1803 | the default. sock_setsockopt not used because it expects | |
1da177e4 LT |
1804 | user space buffer */ |
1805 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
edf1ae40 SF |
1806 | if (!noblocksnd) |
1807 | (*csocket)->sk->sk_sndtimeo = 3 * HZ; | |
1808 | ||
50c2f753 | 1809 | |
1da177e4 LT |
1810 | return rc; |
1811 | } | |
1812 | ||
50c2f753 SF |
1813 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon, |
1814 | struct super_block *sb, struct smb_vol *vol_info) | |
8af18971 SF |
1815 | { |
1816 | /* if we are reconnecting then should we check to see if | |
1817 | * any requested capabilities changed locally e.g. via | |
1818 | * remount but we can not do much about it here | |
1819 | * if they have (even if we could detect it by the following) | |
1820 | * Perhaps we could add a backpointer to array of sb from tcon | |
1821 | * or if we change to make all sb to same share the same | |
1822 | * sb as NFS - then we only have one backpointer to sb. | |
1823 | * What if we wanted to mount the server share twice once with | |
1824 | * and once without posixacls or posix paths? */ | |
1825 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
50c2f753 | 1826 | |
c18c842b SF |
1827 | if (vol_info && vol_info->no_linux_ext) { |
1828 | tcon->fsUnixInfo.Capability = 0; | |
1829 | tcon->unix_ext = 0; /* Unix Extensions disabled */ | |
1830 | cFYI(1, ("Linux protocol extensions disabled")); | |
1831 | return; | |
1832 | } else if (vol_info) | |
1833 | tcon->unix_ext = 1; /* Unix Extensions supported */ | |
1834 | ||
1835 | if (tcon->unix_ext == 0) { | |
1836 | cFYI(1, ("Unix extensions disabled so not set on reconnect")); | |
1837 | return; | |
1838 | } | |
50c2f753 | 1839 | |
fb8c4b14 | 1840 | if (!CIFSSMBQFSUnixInfo(xid, tcon)) { |
8af18971 | 1841 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
50c2f753 | 1842 | |
8af18971 SF |
1843 | /* check for reconnect case in which we do not |
1844 | want to change the mount behavior if we can avoid it */ | |
fb8c4b14 | 1845 | if (vol_info == NULL) { |
50c2f753 | 1846 | /* turn off POSIX ACL and PATHNAMES if not set |
8af18971 SF |
1847 | originally at mount time */ |
1848 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) | |
1849 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
11b6d645 IM |
1850 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1851 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) | |
1852 | cERROR(1, ("POSIXPATH support change")); | |
8af18971 | 1853 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
11b6d645 IM |
1854 | } else if ((cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1855 | cERROR(1, ("possible reconnect error")); | |
1856 | cERROR(1, | |
1857 | ("server disabled POSIX path support")); | |
1858 | } | |
8af18971 | 1859 | } |
50c2f753 | 1860 | |
8af18971 | 1861 | cap &= CIFS_UNIX_CAP_MASK; |
75865f8c | 1862 | if (vol_info && vol_info->no_psx_acl) |
8af18971 | 1863 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
75865f8c | 1864 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
fb8c4b14 SF |
1865 | cFYI(1, ("negotiated posix acl support")); |
1866 | if (sb) | |
8af18971 SF |
1867 | sb->s_flags |= MS_POSIXACL; |
1868 | } | |
1869 | ||
75865f8c | 1870 | if (vol_info && vol_info->posix_paths == 0) |
8af18971 | 1871 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
75865f8c | 1872 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
fb8c4b14 | 1873 | cFYI(1, ("negotiate posix pathnames")); |
75865f8c | 1874 | if (sb) |
50c2f753 | 1875 | CIFS_SB(sb)->mnt_cifs_flags |= |
8af18971 SF |
1876 | CIFS_MOUNT_POSIX_PATHS; |
1877 | } | |
50c2f753 | 1878 | |
984acfe1 SF |
1879 | /* We might be setting the path sep back to a different |
1880 | form if we are reconnecting and the server switched its | |
50c2f753 | 1881 | posix path capability for this share */ |
75865f8c | 1882 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
984acfe1 | 1883 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
75865f8c SF |
1884 | |
1885 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { | |
1886 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { | |
1887 | CIFS_SB(sb)->rsize = 127 * 1024; | |
90c81e0b SF |
1888 | cFYI(DBG2, |
1889 | ("larger reads not supported by srv")); | |
75865f8c SF |
1890 | } |
1891 | } | |
50c2f753 SF |
1892 | |
1893 | ||
1894 | cFYI(1, ("Negotiate caps 0x%x", (int)cap)); | |
8af18971 | 1895 | #ifdef CONFIG_CIFS_DEBUG2 |
75865f8c | 1896 | if (cap & CIFS_UNIX_FCNTL_CAP) |
fb8c4b14 | 1897 | cFYI(1, ("FCNTL cap")); |
75865f8c | 1898 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
fb8c4b14 | 1899 | cFYI(1, ("EXTATTR cap")); |
75865f8c | 1900 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
fb8c4b14 | 1901 | cFYI(1, ("POSIX path cap")); |
75865f8c | 1902 | if (cap & CIFS_UNIX_XATTR_CAP) |
fb8c4b14 | 1903 | cFYI(1, ("XATTR cap")); |
75865f8c | 1904 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
fb8c4b14 | 1905 | cFYI(1, ("POSIX ACL cap")); |
75865f8c | 1906 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
fb8c4b14 | 1907 | cFYI(1, ("very large read cap")); |
75865f8c | 1908 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) |
fb8c4b14 | 1909 | cFYI(1, ("very large write cap")); |
8af18971 SF |
1910 | #endif /* CIFS_DEBUG2 */ |
1911 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
442aa310 | 1912 | if (vol_info == NULL) { |
5a44b319 | 1913 | cFYI(1, ("resetting capabilities failed")); |
442aa310 | 1914 | } else |
5a44b319 SF |
1915 | cERROR(1, ("Negotiating Unix capabilities " |
1916 | "with the server failed. Consider " | |
1917 | "mounting with the Unix Extensions\n" | |
1918 | "disabled, if problems are found, " | |
1919 | "by specifying the nounix mount " | |
2224f4e5 | 1920 | "option.")); |
5a44b319 | 1921 | |
8af18971 SF |
1922 | } |
1923 | } | |
1924 | } | |
1925 | ||
03a143c9 SF |
1926 | static void |
1927 | convert_delimiter(char *path, char delim) | |
1928 | { | |
1929 | int i; | |
c2d68ea6 | 1930 | char old_delim; |
03a143c9 SF |
1931 | |
1932 | if (path == NULL) | |
1933 | return; | |
1934 | ||
582d21e5 | 1935 | if (delim == '/') |
c2d68ea6 SF |
1936 | old_delim = '\\'; |
1937 | else | |
1938 | old_delim = '/'; | |
1939 | ||
03a143c9 | 1940 | for (i = 0; path[i] != '\0'; i++) { |
c2d68ea6 | 1941 | if (path[i] == old_delim) |
03a143c9 SF |
1942 | path[i] = delim; |
1943 | } | |
1944 | } | |
1945 | ||
3b795210 SF |
1946 | static void setup_cifs_sb(struct smb_vol *pvolume_info, |
1947 | struct cifs_sb_info *cifs_sb) | |
1948 | { | |
1949 | if (pvolume_info->rsize > CIFSMaxBufSize) { | |
1950 | cERROR(1, ("rsize %d too large, using MaxBufSize", | |
1951 | pvolume_info->rsize)); | |
1952 | cifs_sb->rsize = CIFSMaxBufSize; | |
1953 | } else if ((pvolume_info->rsize) && | |
1954 | (pvolume_info->rsize <= CIFSMaxBufSize)) | |
1955 | cifs_sb->rsize = pvolume_info->rsize; | |
1956 | else /* default */ | |
1957 | cifs_sb->rsize = CIFSMaxBufSize; | |
1958 | ||
1959 | if (pvolume_info->wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { | |
1960 | cERROR(1, ("wsize %d too large, using 4096 instead", | |
1961 | pvolume_info->wsize)); | |
1962 | cifs_sb->wsize = 4096; | |
1963 | } else if (pvolume_info->wsize) | |
1964 | cifs_sb->wsize = pvolume_info->wsize; | |
1965 | else | |
1966 | cifs_sb->wsize = min_t(const int, | |
1967 | PAGEVEC_SIZE * PAGE_CACHE_SIZE, | |
1968 | 127*1024); | |
1969 | /* old default of CIFSMaxBufSize was too small now | |
1970 | that SMB Write2 can send multiple pages in kvec. | |
1971 | RFC1001 does not describe what happens when frame | |
1972 | bigger than 128K is sent so use that as max in | |
1973 | conjunction with 52K kvec constraint on arch with 4K | |
1974 | page size */ | |
1975 | ||
1976 | if (cifs_sb->rsize < 2048) { | |
1977 | cifs_sb->rsize = 2048; | |
1978 | /* Windows ME may prefer this */ | |
1979 | cFYI(1, ("readsize set to minimum: 2048")); | |
1980 | } | |
1981 | /* calculate prepath */ | |
1982 | cifs_sb->prepath = pvolume_info->prepath; | |
1983 | if (cifs_sb->prepath) { | |
1984 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); | |
1985 | /* we can not convert the / to \ in the path | |
1986 | separators in the prefixpath yet because we do not | |
1987 | know (until reset_cifs_unix_caps is called later) | |
1988 | whether POSIX PATH CAP is available. We normalize | |
1989 | the / to \ after reset_cifs_unix_caps is called */ | |
1990 | pvolume_info->prepath = NULL; | |
1991 | } else | |
1992 | cifs_sb->prepathlen = 0; | |
1993 | cifs_sb->mnt_uid = pvolume_info->linux_uid; | |
1994 | cifs_sb->mnt_gid = pvolume_info->linux_gid; | |
1995 | cifs_sb->mnt_file_mode = pvolume_info->file_mode; | |
1996 | cifs_sb->mnt_dir_mode = pvolume_info->dir_mode; | |
1997 | cFYI(1, ("file mode: 0x%x dir mode: 0x%x", | |
1998 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode)); | |
1999 | ||
2000 | if (pvolume_info->noperm) | |
2001 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; | |
2002 | if (pvolume_info->setuids) | |
2003 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; | |
2004 | if (pvolume_info->server_ino) | |
2005 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; | |
2006 | if (pvolume_info->remap) | |
2007 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; | |
2008 | if (pvolume_info->no_xattr) | |
2009 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; | |
2010 | if (pvolume_info->sfu_emul) | |
2011 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; | |
2012 | if (pvolume_info->nobrl) | |
2013 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; | |
2014 | if (pvolume_info->cifs_acl) | |
2015 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; | |
2016 | if (pvolume_info->override_uid) | |
2017 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; | |
2018 | if (pvolume_info->override_gid) | |
2019 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; | |
2020 | if (pvolume_info->dynperm) | |
2021 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM; | |
2022 | if (pvolume_info->direct_io) { | |
2023 | cFYI(1, ("mounting share using direct i/o")); | |
2024 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; | |
2025 | } | |
2026 | ||
2027 | if ((pvolume_info->cifs_acl) && (pvolume_info->dynperm)) | |
2028 | cERROR(1, ("mount option dynperm ignored if cifsacl " | |
2029 | "mount option supported")); | |
2030 | } | |
2031 | ||
1da177e4 LT |
2032 | int |
2033 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
2034 | char *mount_data, const char *devname) | |
2035 | { | |
2036 | int rc = 0; | |
2037 | int xid; | |
1da177e4 | 2038 | struct socket *csocket = NULL; |
3ec332ef SF |
2039 | struct sockaddr addr; |
2040 | struct sockaddr_in *sin_server = (struct sockaddr_in *) &addr; | |
2041 | struct sockaddr_in6 *sin_server6 = (struct sockaddr_in6 *) &addr; | |
1da177e4 LT |
2042 | struct smb_vol volume_info; |
2043 | struct cifsSesInfo *pSesInfo = NULL; | |
1da177e4 LT |
2044 | struct cifsTconInfo *tcon = NULL; |
2045 | struct TCP_Server_Info *srvTcp = NULL; | |
2046 | ||
2047 | xid = GetXid(); | |
2048 | ||
2049 | /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ | |
50c2f753 | 2050 | |
3ec332ef | 2051 | memset(&addr, 0, sizeof(struct sockaddr)); |
50c2f753 | 2052 | memset(&volume_info, 0, sizeof(struct smb_vol)); |
1da177e4 | 2053 | if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { |
70fe7dc0 JL |
2054 | rc = -EINVAL; |
2055 | goto out; | |
1da177e4 LT |
2056 | } |
2057 | ||
8426c39c | 2058 | if (volume_info.nullauth) { |
fb8c4b14 | 2059 | cFYI(1, ("null user")); |
9b8f5f57 | 2060 | volume_info.username = ""; |
8426c39c | 2061 | } else if (volume_info.username) { |
1da177e4 | 2062 | /* BB fixme parse for domain name here */ |
467a8f8d | 2063 | cFYI(1, ("Username: %s", volume_info.username)); |
1da177e4 | 2064 | } else { |
bf820679 | 2065 | cifserror("No username specified"); |
50c2f753 SF |
2066 | /* In userspace mount helper we can get user name from alternate |
2067 | locations such as env variables and files on disk */ | |
70fe7dc0 JL |
2068 | rc = -EINVAL; |
2069 | goto out; | |
1da177e4 LT |
2070 | } |
2071 | ||
2072 | if (volume_info.UNCip && volume_info.UNC) { | |
50c2f753 | 2073 | rc = cifs_inet_pton(AF_INET, volume_info.UNCip, |
3ec332ef | 2074 | &sin_server->sin_addr.s_addr); |
1da177e4 | 2075 | |
fb8c4b14 | 2076 | if (rc <= 0) { |
1da177e4 | 2077 | /* not ipv4 address, try ipv6 */ |
50c2f753 | 2078 | rc = cifs_inet_pton(AF_INET6, volume_info.UNCip, |
3ec332ef | 2079 | &sin_server6->sin6_addr.in6_u); |
fb8c4b14 | 2080 | if (rc > 0) |
3ec332ef | 2081 | addr.sa_family = AF_INET6; |
1da177e4 | 2082 | } else { |
3ec332ef | 2083 | addr.sa_family = AF_INET; |
1da177e4 | 2084 | } |
50c2f753 | 2085 | |
fb8c4b14 | 2086 | if (rc <= 0) { |
1da177e4 | 2087 | /* we failed translating address */ |
70fe7dc0 JL |
2088 | rc = -EINVAL; |
2089 | goto out; | |
1da177e4 LT |
2090 | } |
2091 | ||
2092 | cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); | |
2093 | /* success */ | |
2094 | rc = 0; | |
50c2f753 SF |
2095 | } else if (volume_info.UNCip) { |
2096 | /* BB using ip addr as server name to connect to the | |
2097 | DFS root below */ | |
2098 | cERROR(1, ("Connecting to DFS root not implemented yet")); | |
70fe7dc0 JL |
2099 | rc = -EINVAL; |
2100 | goto out; | |
1da177e4 LT |
2101 | } else /* which servers DFS root would we conect to */ { |
2102 | cERROR(1, | |
50c2f753 SF |
2103 | ("CIFS mount error: No UNC path (e.g. -o " |
2104 | "unc=//192.168.1.100/public) specified")); | |
70fe7dc0 JL |
2105 | rc = -EINVAL; |
2106 | goto out; | |
1da177e4 LT |
2107 | } |
2108 | ||
2109 | /* this is needed for ASCII cp to Unicode converts */ | |
fb8c4b14 | 2110 | if (volume_info.iocharset == NULL) { |
1da177e4 LT |
2111 | cifs_sb->local_nls = load_nls_default(); |
2112 | /* load_nls_default can not return null */ | |
2113 | } else { | |
2114 | cifs_sb->local_nls = load_nls(volume_info.iocharset); | |
fb8c4b14 | 2115 | if (cifs_sb->local_nls == NULL) { |
50c2f753 SF |
2116 | cERROR(1, ("CIFS mount error: iocharset %s not found", |
2117 | volume_info.iocharset)); | |
70fe7dc0 JL |
2118 | rc = -ELIBACC; |
2119 | goto out; | |
1da177e4 LT |
2120 | } |
2121 | } | |
2122 | ||
e7ddee90 | 2123 | srvTcp = cifs_find_tcp_session(&addr); |
d82c2df5 | 2124 | if (!srvTcp) { /* create socket */ |
3ec332ef | 2125 | if (addr.sa_family == AF_INET6) { |
fb8c4b14 | 2126 | cFYI(1, ("attempting ipv6 connect")); |
5858ae44 SF |
2127 | /* BB should we allow ipv6 on port 139? */ |
2128 | /* other OS never observed in Wild doing 139 with v6 */ | |
3ec332ef SF |
2129 | sin_server6->sin6_port = htons(volume_info.port); |
2130 | rc = ipv6_connect(sin_server6, &csocket, | |
edf1ae40 | 2131 | volume_info.noblocksnd); |
3ec332ef SF |
2132 | } else { |
2133 | sin_server->sin_port = htons(volume_info.port); | |
2134 | rc = ipv4_connect(sin_server, &csocket, | |
a10faeb2 | 2135 | volume_info.source_rfc1001_name, |
edf1ae40 SF |
2136 | volume_info.target_rfc1001_name, |
2137 | volume_info.noblocksnd, | |
2138 | volume_info.noautotune); | |
3ec332ef | 2139 | } |
1da177e4 | 2140 | if (rc < 0) { |
3ec332ef | 2141 | cERROR(1, ("Error connecting to socket. " |
50c2f753 | 2142 | "Aborting operation")); |
4523cc30 | 2143 | if (csocket != NULL) |
1da177e4 | 2144 | sock_release(csocket); |
70fe7dc0 | 2145 | goto out; |
1da177e4 LT |
2146 | } |
2147 | ||
a8a11d39 MK |
2148 | srvTcp = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); |
2149 | if (!srvTcp) { | |
1da177e4 LT |
2150 | rc = -ENOMEM; |
2151 | sock_release(csocket); | |
70fe7dc0 | 2152 | goto out; |
1da177e4 | 2153 | } else { |
edf1ae40 SF |
2154 | srvTcp->noblocksnd = volume_info.noblocksnd; |
2155 | srvTcp->noautotune = volume_info.noautotune; | |
3ec332ef SF |
2156 | if (addr.sa_family == AF_INET6) |
2157 | memcpy(&srvTcp->addr.sockAddr6, sin_server6, | |
2158 | sizeof(struct sockaddr_in6)); | |
2159 | else | |
2160 | memcpy(&srvTcp->addr.sockAddr, sin_server, | |
2161 | sizeof(struct sockaddr_in)); | |
50c2f753 | 2162 | atomic_set(&srvTcp->inFlight, 0); |
1da177e4 LT |
2163 | /* BB Add code for ipv6 case too */ |
2164 | srvTcp->ssocket = csocket; | |
c359cf3c JL |
2165 | srvTcp->hostname = extract_hostname(volume_info.UNC); |
2166 | if (IS_ERR(srvTcp->hostname)) { | |
2167 | rc = PTR_ERR(srvTcp->hostname); | |
2168 | sock_release(csocket); | |
2169 | goto out; | |
2170 | } | |
1da177e4 LT |
2171 | init_waitqueue_head(&srvTcp->response_q); |
2172 | init_waitqueue_head(&srvTcp->request_q); | |
2173 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
2174 | /* at this point we are the only ones with the pointer | |
2175 | to the struct since the kernel thread not created yet | |
2176 | so no need to spinlock this init of tcpStatus */ | |
2177 | srvTcp->tcpStatus = CifsNew; | |
2178 | init_MUTEX(&srvTcp->tcpSem); | |
0468a2cf JL |
2179 | |
2180 | /* | |
2181 | * since we're in a cifs function already, we know that | |
2182 | * this will succeed. No need for try_module_get(). | |
2183 | */ | |
2184 | __module_get(THIS_MODULE); | |
aaf737ad | 2185 | srvTcp->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, srvTcp, "cifsd"); |
8840dee9 | 2186 | if (IS_ERR(srvTcp->tsk)) { |
aaf737ad | 2187 | rc = PTR_ERR(srvTcp->tsk); |
50c2f753 | 2188 | cERROR(1, ("error %d create cifsd thread", rc)); |
0468a2cf | 2189 | module_put(THIS_MODULE); |
aaf737ad | 2190 | srvTcp->tsk = NULL; |
1da177e4 | 2191 | sock_release(csocket); |
c359cf3c | 2192 | kfree(srvTcp->hostname); |
70fe7dc0 | 2193 | goto out; |
f191401f | 2194 | } |
f191401f | 2195 | rc = 0; |
50c2f753 SF |
2196 | memcpy(srvTcp->workstation_RFC1001_name, |
2197 | volume_info.source_rfc1001_name, 16); | |
2198 | memcpy(srvTcp->server_RFC1001_name, | |
2199 | volume_info.target_rfc1001_name, 16); | |
ad009ac9 | 2200 | srvTcp->sequence_number = 0; |
e7ddee90 | 2201 | INIT_LIST_HEAD(&srvTcp->tcp_ses_list); |
14fbf50d | 2202 | INIT_LIST_HEAD(&srvTcp->smb_ses_list); |
e7ddee90 JL |
2203 | ++srvTcp->srv_count; |
2204 | write_lock(&cifs_tcp_ses_lock); | |
2205 | list_add(&srvTcp->tcp_ses_list, | |
2206 | &cifs_tcp_ses_list); | |
2207 | write_unlock(&cifs_tcp_ses_lock); | |
1da177e4 LT |
2208 | } |
2209 | } | |
2210 | ||
14fbf50d JL |
2211 | pSesInfo = cifs_find_smb_ses(srvTcp, volume_info.username); |
2212 | if (pSesInfo) { | |
1d9a8852 JL |
2213 | cFYI(1, ("Existing smb sess found (status=%d)", |
2214 | pSesInfo->status)); | |
14fbf50d JL |
2215 | /* |
2216 | * The existing SMB session already has a reference to srvTcp, | |
2217 | * so we can put back the extra one we got before | |
2218 | */ | |
2219 | cifs_put_tcp_session(srvTcp); | |
2220 | ||
88e7d705 | 2221 | down(&pSesInfo->sesSem); |
3b795210 | 2222 | if (pSesInfo->need_reconnect) { |
1d9a8852 | 2223 | cFYI(1, ("Session needs reconnect")); |
1d9a8852 JL |
2224 | rc = cifs_setup_session(xid, pSesInfo, |
2225 | cifs_sb->local_nls); | |
1d9a8852 | 2226 | } |
88e7d705 | 2227 | up(&pSesInfo->sesSem); |
1da177e4 | 2228 | } else if (!rc) { |
bf820679 | 2229 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 | 2230 | pSesInfo = sesInfoAlloc(); |
14fbf50d | 2231 | if (pSesInfo == NULL) { |
1da177e4 | 2232 | rc = -ENOMEM; |
14fbf50d | 2233 | goto mount_fail_check; |
1da177e4 LT |
2234 | } |
2235 | ||
14fbf50d JL |
2236 | /* new SMB session uses our srvTcp ref */ |
2237 | pSesInfo->server = srvTcp; | |
2238 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
2239 | NIPQUAD(sin_server->sin_addr.s_addr)); | |
2240 | ||
2241 | write_lock(&cifs_tcp_ses_lock); | |
2242 | list_add(&pSesInfo->smb_ses_list, &srvTcp->smb_ses_list); | |
2243 | write_unlock(&cifs_tcp_ses_lock); | |
2244 | ||
2245 | /* volume_info.password freed at unmount */ | |
2246 | if (volume_info.password) { | |
2247 | pSesInfo->password = volume_info.password; | |
2248 | /* set to NULL to prevent freeing on exit */ | |
2249 | volume_info.password = NULL; | |
2250 | } | |
2251 | if (volume_info.username) | |
2252 | strncpy(pSesInfo->userName, volume_info.username, | |
2253 | MAX_USERNAME_SIZE); | |
2254 | if (volume_info.domainname) { | |
2255 | int len = strlen(volume_info.domainname); | |
2256 | pSesInfo->domainName = kmalloc(len + 1, GFP_KERNEL); | |
2257 | if (pSesInfo->domainName) | |
2258 | strcpy(pSesInfo->domainName, | |
2259 | volume_info.domainname); | |
70fe7dc0 | 2260 | } |
14fbf50d JL |
2261 | pSesInfo->linux_uid = volume_info.linux_uid; |
2262 | pSesInfo->overrideSecFlg = volume_info.secFlg; | |
2263 | down(&pSesInfo->sesSem); | |
2264 | ||
2265 | /* BB FIXME need to pass vol->secFlgs BB */ | |
2266 | rc = cifs_setup_session(xid, pSesInfo, | |
2267 | cifs_sb->local_nls); | |
2268 | up(&pSesInfo->sesSem); | |
1da177e4 | 2269 | } |
50c2f753 | 2270 | |
1da177e4 LT |
2271 | /* search for existing tcon to this server share */ |
2272 | if (!rc) { | |
3b795210 | 2273 | setup_cifs_sb(&volume_info, cifs_sb); |
27adb44c | 2274 | |
f1987b44 | 2275 | tcon = cifs_find_tcon(pSesInfo, volume_info.UNC); |
1da177e4 | 2276 | if (tcon) { |
bf820679 | 2277 | cFYI(1, ("Found match on UNC path")); |
f1987b44 JL |
2278 | /* existing tcon already has a reference */ |
2279 | cifs_put_smb_ses(pSesInfo); | |
ab3f9929 SF |
2280 | if (tcon->seal != volume_info.seal) |
2281 | cERROR(1, ("transport encryption setting " | |
2282 | "conflicts with existing tid")); | |
1da177e4 LT |
2283 | } else { |
2284 | tcon = tconInfoAlloc(); | |
3b795210 | 2285 | if (tcon == NULL) { |
1da177e4 | 2286 | rc = -ENOMEM; |
3b795210 SF |
2287 | goto mount_fail_check; |
2288 | } | |
ab3f9929 | 2289 | tcon->ses = pSesInfo; |
3b795210 SF |
2290 | |
2291 | /* check for null share name ie connect to dfs root */ | |
3b795210 SF |
2292 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) |
2293 | && (strchr(volume_info.UNC + 3, '/') == NULL)) { | |
2294 | /* rc = connect_to_dfs_path(...) */ | |
2295 | cFYI(1, ("DFS root not supported")); | |
2296 | rc = -ENODEV; | |
2297 | goto mount_fail_check; | |
2298 | } else { | |
2299 | /* BB Do we need to wrap sesSem around | |
2300 | * this TCon call and Unix SetFS as | |
2301 | * we do on SessSetup and reconnect? */ | |
2302 | rc = CIFSTCon(xid, pSesInfo, volume_info.UNC, | |
2303 | tcon, cifs_sb->local_nls); | |
2304 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
2305 | if (volume_info.nodfs) { | |
2306 | tcon->Flags &= ~SMB_SHARE_IS_IN_DFS; | |
2307 | cFYI(1, ("DFS disabled (%d)", | |
2308 | tcon->Flags)); | |
1da177e4 LT |
2309 | } |
2310 | } | |
14fbf50d | 2311 | if (rc) |
3b795210 | 2312 | goto mount_fail_check; |
14fbf50d | 2313 | tcon->seal = volume_info.seal; |
f1987b44 JL |
2314 | write_lock(&cifs_tcp_ses_lock); |
2315 | list_add(&tcon->tcon_list, &pSesInfo->tcon_list); | |
2316 | write_unlock(&cifs_tcp_ses_lock); | |
1da177e4 | 2317 | } |
3b795210 SF |
2318 | |
2319 | /* we can have only one retry value for a connection | |
2320 | to a share so for resources mounted more than once | |
2321 | to the same server share the last value passed in | |
2322 | for the retry flag is used */ | |
2323 | tcon->retry = volume_info.retry; | |
2324 | tcon->nocase = volume_info.nocase; | |
2325 | tcon->local_lease = volume_info.local_lease; | |
1da177e4 | 2326 | } |
4523cc30 | 2327 | if (pSesInfo) { |
1da177e4 LT |
2328 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
2329 | sb->s_maxbytes = (u64) 1 << 63; | |
2330 | } else | |
2331 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
2332 | } | |
2333 | ||
8af18971 | 2334 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
1da177e4 LT |
2335 | sb->s_time_gran = 100; |
2336 | ||
3b795210 | 2337 | mount_fail_check: |
14fbf50d | 2338 | /* on error free sesinfo and tcon struct if needed */ |
1da177e4 | 2339 | if (rc) { |
e7ddee90 JL |
2340 | /* If find_unc succeeded then rc == 0 so we can not end */ |
2341 | /* up accidently freeing someone elses tcon struct */ | |
2342 | if (tcon) | |
f1987b44 JL |
2343 | cifs_put_tcon(tcon); |
2344 | else if (pSesInfo) | |
14fbf50d JL |
2345 | cifs_put_smb_ses(pSesInfo); |
2346 | else | |
2347 | cifs_put_tcp_session(srvTcp); | |
d82c2df5 SF |
2348 | goto out; |
2349 | } | |
d82c2df5 | 2350 | cifs_sb->tcon = tcon; |
d82c2df5 SF |
2351 | |
2352 | /* do not care if following two calls succeed - informational */ | |
2353 | if (!tcon->ipc) { | |
2354 | CIFSSMBQFSDeviceInfo(xid, tcon); | |
2355 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
2356 | } | |
50c2f753 | 2357 | |
d82c2df5 SF |
2358 | /* tell server which Unix caps we support */ |
2359 | if (tcon->ses->capabilities & CAP_UNIX) | |
2360 | /* reset of caps checks mount to see if unix extensions | |
2361 | disabled for just this mount */ | |
2362 | reset_cifs_unix_caps(xid, tcon, sb, &volume_info); | |
2363 | else | |
2364 | tcon->unix_ext = 0; /* server does not support them */ | |
c18c842b | 2365 | |
d82c2df5 SF |
2366 | /* convert forward to back slashes in prepath here if needed */ |
2367 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0) | |
2368 | convert_delimiter(cifs_sb->prepath, CIFS_DIR_SEP(cifs_sb)); | |
03a143c9 | 2369 | |
d82c2df5 SF |
2370 | if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) { |
2371 | cifs_sb->rsize = 1024 * 127; | |
2372 | cFYI(DBG2, ("no very large read support, rsize now 127K")); | |
1da177e4 | 2373 | } |
d82c2df5 SF |
2374 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
2375 | cifs_sb->wsize = min(cifs_sb->wsize, | |
2376 | (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)); | |
2377 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) | |
2378 | cifs_sb->rsize = min(cifs_sb->rsize, | |
2379 | (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)); | |
1da177e4 LT |
2380 | |
2381 | /* volume_info.password is freed above when existing session found | |
2382 | (in which case it is not needed anymore) but when new sesion is created | |
2383 | the password ptr is put in the new session structure (in which case the | |
2384 | password will be freed at unmount time) */ | |
70fe7dc0 JL |
2385 | out: |
2386 | /* zero out password before freeing */ | |
2387 | if (volume_info.password != NULL) { | |
2388 | memset(volume_info.password, 0, strlen(volume_info.password)); | |
2389 | kfree(volume_info.password); | |
2390 | } | |
f99d49ad | 2391 | kfree(volume_info.UNC); |
2fe87f02 | 2392 | kfree(volume_info.prepath); |
1da177e4 LT |
2393 | FreeXid(xid); |
2394 | return rc; | |
2395 | } | |
2396 | ||
2397 | static int | |
2398 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 2399 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
2400 | const struct nls_table *nls_codepage) |
2401 | { | |
2402 | struct smb_hdr *smb_buffer; | |
2403 | struct smb_hdr *smb_buffer_response; | |
2404 | SESSION_SETUP_ANDX *pSMB; | |
2405 | SESSION_SETUP_ANDX *pSMBr; | |
2406 | char *bcc_ptr; | |
2407 | char *user; | |
2408 | char *domain; | |
2409 | int rc = 0; | |
2410 | int remaining_words = 0; | |
2411 | int bytes_returned = 0; | |
2412 | int len; | |
2413 | __u32 capabilities; | |
2414 | __u16 count; | |
2415 | ||
eeac8047 | 2416 | cFYI(1, ("In sesssetup")); |
4523cc30 | 2417 | if (ses == NULL) |
1da177e4 LT |
2418 | return -EINVAL; |
2419 | user = ses->userName; | |
2420 | domain = ses->domainName; | |
2421 | smb_buffer = cifs_buf_get(); | |
582d21e5 SF |
2422 | |
2423 | if (smb_buffer == NULL) | |
1da177e4 | 2424 | return -ENOMEM; |
582d21e5 | 2425 | |
1da177e4 LT |
2426 | smb_buffer_response = smb_buffer; |
2427 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2428 | ||
2429 | /* send SMBsessionSetup here */ | |
2430 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2431 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2432 | ||
1982c344 | 2433 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2434 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2435 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2436 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2437 | ||
50c2f753 SF |
2438 | if (ses->server->secMode & |
2439 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
2440 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2441 | ||
2442 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2443 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2444 | if (ses->capabilities & CAP_UNICODE) { | |
2445 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2446 | capabilities |= CAP_UNICODE; | |
2447 | } | |
2448 | if (ses->capabilities & CAP_STATUS32) { | |
2449 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2450 | capabilities |= CAP_STATUS32; | |
2451 | } | |
2452 | if (ses->capabilities & CAP_DFS) { | |
2453 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2454 | capabilities |= CAP_DFS; | |
2455 | } | |
2456 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2457 | ||
50c2f753 | 2458 | pSMB->req_no_secext.CaseInsensitivePasswordLength = |
7c7b25bc | 2459 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2460 | |
2461 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2462 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2463 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2464 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2465 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2466 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2467 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2468 | |
2469 | if (ses->capabilities & CAP_UNICODE) { | |
2470 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2471 | *bcc_ptr = 0; | |
2472 | bcc_ptr++; | |
2473 | } | |
4523cc30 | 2474 | if (user == NULL) |
3979877e | 2475 | bytes_returned = 0; /* skip null user */ |
50c2f753 | 2476 | else |
1da177e4 | 2477 | bytes_returned = |
50c2f753 | 2478 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2479 | nls_codepage); |
2480 | /* convert number of 16 bit words to bytes */ | |
2481 | bcc_ptr += 2 * bytes_returned; | |
2482 | bcc_ptr += 2; /* trailing null */ | |
2483 | if (domain == NULL) | |
2484 | bytes_returned = | |
e89dc920 | 2485 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2486 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2487 | else | |
2488 | bytes_returned = | |
e89dc920 | 2489 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2490 | nls_codepage); |
2491 | bcc_ptr += 2 * bytes_returned; | |
2492 | bcc_ptr += 2; | |
2493 | bytes_returned = | |
e89dc920 | 2494 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2495 | 32, nls_codepage); |
2496 | bcc_ptr += 2 * bytes_returned; | |
2497 | bytes_returned = | |
e9ff3990 | 2498 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, |
1da177e4 LT |
2499 | 32, nls_codepage); |
2500 | bcc_ptr += 2 * bytes_returned; | |
2501 | bcc_ptr += 2; | |
2502 | bytes_returned = | |
e89dc920 | 2503 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2504 | 64, nls_codepage); |
2505 | bcc_ptr += 2 * bytes_returned; | |
2506 | bcc_ptr += 2; | |
2507 | } else { | |
50c2f753 | 2508 | if (user != NULL) { |
1da177e4 LT |
2509 | strncpy(bcc_ptr, user, 200); |
2510 | bcc_ptr += strnlen(user, 200); | |
2511 | } | |
2512 | *bcc_ptr = 0; | |
2513 | bcc_ptr++; | |
2514 | if (domain == NULL) { | |
2515 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2516 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2517 | } else { | |
2518 | strncpy(bcc_ptr, domain, 64); | |
2519 | bcc_ptr += strnlen(domain, 64); | |
2520 | *bcc_ptr = 0; | |
2521 | bcc_ptr++; | |
2522 | } | |
2523 | strcpy(bcc_ptr, "Linux version "); | |
2524 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2525 | strcpy(bcc_ptr, utsname()->release); |
2526 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2527 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2528 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2529 | } | |
2530 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2531 | smb_buffer->smb_buf_length += count; | |
2532 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2533 | ||
2534 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2535 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2536 | if (rc) { |
2537 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2538 | } else if ((smb_buffer_response->WordCount == 3) | |
2539 | || (smb_buffer_response->WordCount == 4)) { | |
2540 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2541 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2542 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2543 | cFYI(1, (" Guest login")); /* BB mark SesInfo struct? */ |
2544 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format | |
2545 | (little endian) */ | |
1da177e4 | 2546 | cFYI(1, ("UID = %d ", ses->Suid)); |
50c2f753 SF |
2547 | /* response can have either 3 or 4 word count - Samba sends 3 */ |
2548 | bcc_ptr = pByteArea(smb_buffer_response); | |
1da177e4 LT |
2549 | if ((pSMBr->resp.hdr.WordCount == 3) |
2550 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2551 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2552 | if (pSMBr->resp.hdr.WordCount == 4) | |
2553 | bcc_ptr += blob_len; | |
2554 | ||
2555 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2556 | if ((long) (bcc_ptr) % 2) { | |
2557 | remaining_words = | |
50c2f753 SF |
2558 | (BCC(smb_buffer_response) - 1) / 2; |
2559 | /* Unicode strings must be word | |
2560 | aligned */ | |
2561 | bcc_ptr++; | |
1da177e4 LT |
2562 | } else { |
2563 | remaining_words = | |
2564 | BCC(smb_buffer_response) / 2; | |
2565 | } | |
2566 | len = | |
2567 | UniStrnlen((wchar_t *) bcc_ptr, | |
2568 | remaining_words - 1); | |
2569 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2570 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2571 | terminating last Unicode string in response */ | |
fb8c4b14 | 2572 | if (ses->serverOS) |
a424f8bf | 2573 | kfree(ses->serverOS); |
50c2f753 SF |
2574 | ses->serverOS = kzalloc(2 * (len + 1), |
2575 | GFP_KERNEL); | |
fb8c4b14 | 2576 | if (ses->serverOS == NULL) |
433dc24f | 2577 | goto sesssetup_nomem; |
1da177e4 | 2578 | cifs_strfromUCS_le(ses->serverOS, |
50c2f753 SF |
2579 | (__le16 *)bcc_ptr, |
2580 | len, nls_codepage); | |
1da177e4 LT |
2581 | bcc_ptr += 2 * (len + 1); |
2582 | remaining_words -= len + 1; | |
2583 | ses->serverOS[2 * len] = 0; | |
2584 | ses->serverOS[1 + (2 * len)] = 0; | |
2585 | if (remaining_words > 0) { | |
2586 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2587 | remaining_words-1); | |
cd49b492 | 2588 | kfree(ses->serverNOS); |
50c2f753 SF |
2589 | ses->serverNOS = kzalloc(2 * (len + 1), |
2590 | GFP_KERNEL); | |
fb8c4b14 | 2591 | if (ses->serverNOS == NULL) |
433dc24f | 2592 | goto sesssetup_nomem; |
1da177e4 | 2593 | cifs_strfromUCS_le(ses->serverNOS, |
50c2f753 SF |
2594 | (__le16 *)bcc_ptr, |
2595 | len, nls_codepage); | |
1da177e4 LT |
2596 | bcc_ptr += 2 * (len + 1); |
2597 | ses->serverNOS[2 * len] = 0; | |
2598 | ses->serverNOS[1 + (2 * len)] = 0; | |
fb8c4b14 | 2599 | if (strncmp(ses->serverNOS, |
50c2f753 | 2600 | "NT LAN Manager 4", 16) == 0) { |
467a8f8d | 2601 | cFYI(1, ("NT4 server")); |
1da177e4 LT |
2602 | ses->flags |= CIFS_SES_NT4; |
2603 | } | |
2604 | remaining_words -= len + 1; | |
2605 | if (remaining_words > 0) { | |
433dc24f | 2606 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
50c2f753 SF |
2607 | /* last string is not always null terminated |
2608 | (for e.g. for Windows XP & 2000) */ | |
fb8c4b14 | 2609 | if (ses->serverDomain) |
a424f8bf | 2610 | kfree(ses->serverDomain); |
1da177e4 | 2611 | ses->serverDomain = |
50c2f753 SF |
2612 | kzalloc(2*(len+1), |
2613 | GFP_KERNEL); | |
fb8c4b14 | 2614 | if (ses->serverDomain == NULL) |
433dc24f | 2615 | goto sesssetup_nomem; |
1da177e4 | 2616 | cifs_strfromUCS_le(ses->serverDomain, |
50c2f753 SF |
2617 | (__le16 *)bcc_ptr, |
2618 | len, nls_codepage); | |
1da177e4 LT |
2619 | bcc_ptr += 2 * (len + 1); |
2620 | ses->serverDomain[2*len] = 0; | |
2621 | ses->serverDomain[1+(2*len)] = 0; | |
50c2f753 SF |
2622 | } else { /* else no more room so create |
2623 | dummy domain string */ | |
fb8c4b14 | 2624 | if (ses->serverDomain) |
a424f8bf | 2625 | kfree(ses->serverDomain); |
50c2f753 | 2626 | ses->serverDomain = |
e915fc49 | 2627 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2628 | } |
50c2f753 SF |
2629 | } else { /* no room so create dummy domain |
2630 | and NOS string */ | |
2631 | ||
433dc24f SF |
2632 | /* if these kcallocs fail not much we |
2633 | can do, but better to not fail the | |
2634 | sesssetup itself */ | |
cd49b492 | 2635 | kfree(ses->serverDomain); |
1da177e4 | 2636 | ses->serverDomain = |
e915fc49 | 2637 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2638 | kfree(ses->serverNOS); |
1da177e4 | 2639 | ses->serverNOS = |
e915fc49 | 2640 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2641 | } |
2642 | } else { /* ASCII */ | |
2643 | len = strnlen(bcc_ptr, 1024); | |
2644 | if (((long) bcc_ptr + len) - (long) | |
2645 | pByteArea(smb_buffer_response) | |
2646 | <= BCC(smb_buffer_response)) { | |
cd49b492 | 2647 | kfree(ses->serverOS); |
50c2f753 SF |
2648 | ses->serverOS = kzalloc(len + 1, |
2649 | GFP_KERNEL); | |
fb8c4b14 | 2650 | if (ses->serverOS == NULL) |
433dc24f | 2651 | goto sesssetup_nomem; |
50c2f753 | 2652 | strncpy(ses->serverOS, bcc_ptr, len); |
1da177e4 LT |
2653 | |
2654 | bcc_ptr += len; | |
50c2f753 SF |
2655 | /* null terminate the string */ |
2656 | bcc_ptr[0] = 0; | |
1da177e4 LT |
2657 | bcc_ptr++; |
2658 | ||
2659 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2660 | kfree(ses->serverNOS); |
50c2f753 SF |
2661 | ses->serverNOS = kzalloc(len + 1, |
2662 | GFP_KERNEL); | |
fb8c4b14 | 2663 | if (ses->serverNOS == NULL) |
433dc24f | 2664 | goto sesssetup_nomem; |
1da177e4 LT |
2665 | strncpy(ses->serverNOS, bcc_ptr, len); |
2666 | bcc_ptr += len; | |
2667 | bcc_ptr[0] = 0; | |
2668 | bcc_ptr++; | |
2669 | ||
2670 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 2671 | if (ses->serverDomain) |
a424f8bf | 2672 | kfree(ses->serverDomain); |
50c2f753 SF |
2673 | ses->serverDomain = kzalloc(len + 1, |
2674 | GFP_KERNEL); | |
fb8c4b14 | 2675 | if (ses->serverDomain == NULL) |
433dc24f | 2676 | goto sesssetup_nomem; |
50c2f753 SF |
2677 | strncpy(ses->serverDomain, bcc_ptr, |
2678 | len); | |
1da177e4 LT |
2679 | bcc_ptr += len; |
2680 | bcc_ptr[0] = 0; | |
2681 | bcc_ptr++; | |
2682 | } else | |
2683 | cFYI(1, | |
50c2f753 SF |
2684 | ("Variable field of length %d " |
2685 | "extends beyond end of smb ", | |
1da177e4 LT |
2686 | len)); |
2687 | } | |
2688 | } else { | |
2689 | cERROR(1, | |
50c2f753 SF |
2690 | (" Security Blob Length extends beyond " |
2691 | "end of SMB")); | |
1da177e4 LT |
2692 | } |
2693 | } else { | |
2694 | cERROR(1, | |
2695 | (" Invalid Word count %d: ", | |
2696 | smb_buffer_response->WordCount)); | |
2697 | rc = -EIO; | |
2698 | } | |
433dc24f SF |
2699 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2700 | since that could make reconnection harder, and | |
2701 | reconnection might be needed to free memory */ | |
a8a11d39 | 2702 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2703 | |
2704 | return rc; | |
2705 | } | |
2706 | ||
1da177e4 LT |
2707 | static int |
2708 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
4b18f2a9 | 2709 | struct cifsSesInfo *ses, bool *pNTLMv2_flag, |
1da177e4 LT |
2710 | const struct nls_table *nls_codepage) |
2711 | { | |
2712 | struct smb_hdr *smb_buffer; | |
2713 | struct smb_hdr *smb_buffer_response; | |
2714 | SESSION_SETUP_ANDX *pSMB; | |
2715 | SESSION_SETUP_ANDX *pSMBr; | |
2716 | char *bcc_ptr; | |
2717 | char *domain; | |
2718 | int rc = 0; | |
2719 | int remaining_words = 0; | |
2720 | int bytes_returned = 0; | |
2721 | int len; | |
6345a3a8 | 2722 | int SecurityBlobLength = sizeof(NEGOTIATE_MESSAGE); |
1da177e4 LT |
2723 | PNEGOTIATE_MESSAGE SecurityBlob; |
2724 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2725 | __u32 negotiate_flags, capabilities; | |
2726 | __u16 count; | |
2727 | ||
12b3b8ff | 2728 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
fb8c4b14 | 2729 | if (ses == NULL) |
1da177e4 LT |
2730 | return -EINVAL; |
2731 | domain = ses->domainName; | |
4b18f2a9 | 2732 | *pNTLMv2_flag = false; |
1da177e4 LT |
2733 | smb_buffer = cifs_buf_get(); |
2734 | if (smb_buffer == NULL) { | |
2735 | return -ENOMEM; | |
2736 | } | |
2737 | smb_buffer_response = smb_buffer; | |
2738 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2739 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2740 | ||
2741 | /* send SMBsessionSetup here */ | |
2742 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2743 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2744 | |
2745 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2746 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2747 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2748 | ||
2749 | pSMB->req.AndXCommand = 0xFF; | |
2750 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2751 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2752 | ||
fb8c4b14 | 2753 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2754 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2755 | ||
2756 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2757 | CAP_EXTENDED_SECURITY; | |
2758 | if (ses->capabilities & CAP_UNICODE) { | |
2759 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2760 | capabilities |= CAP_UNICODE; | |
2761 | } | |
2762 | if (ses->capabilities & CAP_STATUS32) { | |
2763 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2764 | capabilities |= CAP_STATUS32; | |
2765 | } | |
2766 | if (ses->capabilities & CAP_DFS) { | |
2767 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2768 | capabilities |= CAP_DFS; | |
2769 | } | |
2770 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2771 | ||
2772 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2773 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2774 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2775 | SecurityBlob->MessageType = NtLmNegotiate; | |
2776 | negotiate_flags = | |
2777 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2778 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2779 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 | 2780 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
fb8c4b14 | 2781 | if (sign_CIFS_PDUs) |
1da177e4 | 2782 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 2783 | /* if (ntlmv2_support) |
3979877e | 2784 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ |
1da177e4 LT |
2785 | /* setup pointers to domain name and workstation name */ |
2786 | bcc_ptr += SecurityBlobLength; | |
2787 | ||
2788 | SecurityBlob->WorkstationName.Buffer = 0; | |
2789 | SecurityBlob->WorkstationName.Length = 0; | |
2790 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2791 | ||
12b3b8ff SF |
2792 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2793 | along with username on auth request (ie the response to challenge) */ | |
2794 | SecurityBlob->DomainName.Buffer = 0; | |
2795 | SecurityBlob->DomainName.Length = 0; | |
2796 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2797 | if (ses->capabilities & CAP_UNICODE) { |
2798 | if ((long) bcc_ptr % 2) { | |
2799 | *bcc_ptr = 0; | |
2800 | bcc_ptr++; | |
2801 | } | |
2802 | ||
2803 | bytes_returned = | |
e89dc920 | 2804 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2805 | 32, nls_codepage); |
2806 | bcc_ptr += 2 * bytes_returned; | |
2807 | bytes_returned = | |
e9ff3990 | 2808 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2809 | nls_codepage); |
2810 | bcc_ptr += 2 * bytes_returned; | |
2811 | bcc_ptr += 2; /* null terminate Linux version */ | |
2812 | bytes_returned = | |
e89dc920 | 2813 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2814 | 64, nls_codepage); |
2815 | bcc_ptr += 2 * bytes_returned; | |
2816 | *(bcc_ptr + 1) = 0; | |
2817 | *(bcc_ptr + 2) = 0; | |
2818 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2819 | *(bcc_ptr + 1) = 0; | |
2820 | *(bcc_ptr + 2) = 0; | |
2821 | bcc_ptr += 2; /* null domain */ | |
2822 | } else { /* ASCII */ | |
2823 | strcpy(bcc_ptr, "Linux version "); | |
2824 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2825 | strcpy(bcc_ptr, utsname()->release); |
2826 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2827 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2828 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2829 | bcc_ptr++; /* empty domain field */ | |
2830 | *bcc_ptr = 0; | |
2831 | } | |
2832 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2833 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2834 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2835 | smb_buffer->smb_buf_length += count; | |
2836 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2837 | ||
2838 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2839 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2840 | |
2841 | if (smb_buffer_response->Status.CifsError == | |
2842 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2843 | rc = 0; | |
2844 | ||
2845 | if (rc) { | |
2846 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2847 | } else if ((smb_buffer_response->WordCount == 3) | |
2848 | || (smb_buffer_response->WordCount == 4)) { | |
2849 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2850 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2851 | ||
2852 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2853 | cFYI(1, (" Guest login")); |
2854 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
1da177e4 | 2855 | |
50c2f753 SF |
2856 | bcc_ptr = pByteArea(smb_buffer_response); |
2857 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
2858 | |
2859 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2860 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2861 | cFYI(1, | |
2862 | ("Unexpected NTLMSSP message type received %d", | |
2863 | SecurityBlob2->MessageType)); | |
2864 | } else if (ses) { | |
50c2f753 | 2865 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ |
12b3b8ff | 2866 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2867 | if ((pSMBr->resp.hdr.WordCount == 3) |
2868 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2869 | && (blob_len < | |
2870 | pSMBr->resp.ByteCount))) { | |
2871 | ||
2872 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2873 | bcc_ptr += blob_len; | |
12b3b8ff | 2874 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2875 | blob_len)); |
2876 | } | |
2877 | ||
12b3b8ff | 2878 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2879 | |
2880 | memcpy(ses->server->cryptKey, | |
2881 | SecurityBlob2->Challenge, | |
2882 | CIFS_CRYPTO_KEY_SIZE); | |
50c2f753 | 2883 | if (SecurityBlob2->NegotiateFlags & |
12b3b8ff | 2884 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) |
4b18f2a9 | 2885 | *pNTLMv2_flag = true; |
1da177e4 | 2886 | |
50c2f753 SF |
2887 | if ((SecurityBlob2->NegotiateFlags & |
2888 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
1da177e4 | 2889 | || (sign_CIFS_PDUs > 1)) |
50c2f753 SF |
2890 | ses->server->secMode |= |
2891 | SECMODE_SIGN_REQUIRED; | |
2892 | if ((SecurityBlob2->NegotiateFlags & | |
1da177e4 | 2893 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) |
50c2f753 | 2894 | ses->server->secMode |= |
1da177e4 LT |
2895 | SECMODE_SIGN_ENABLED; |
2896 | ||
2897 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2898 | if ((long) (bcc_ptr) % 2) { | |
2899 | remaining_words = | |
2900 | (BCC(smb_buffer_response) | |
2901 | - 1) / 2; | |
50c2f753 SF |
2902 | /* Must word align unicode strings */ |
2903 | bcc_ptr++; | |
1da177e4 LT |
2904 | } else { |
2905 | remaining_words = | |
2906 | BCC | |
2907 | (smb_buffer_response) / 2; | |
2908 | } | |
2909 | len = | |
2910 | UniStrnlen((wchar_t *) bcc_ptr, | |
2911 | remaining_words - 1); | |
2912 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2913 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2914 | terminating last Unicode string in response */ | |
fb8c4b14 | 2915 | if (ses->serverOS) |
a424f8bf | 2916 | kfree(ses->serverOS); |
1da177e4 | 2917 | ses->serverOS = |
e915fc49 | 2918 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2919 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2920 | (__le16 *) |
1da177e4 LT |
2921 | bcc_ptr, len, |
2922 | nls_codepage); | |
2923 | bcc_ptr += 2 * (len + 1); | |
2924 | remaining_words -= len + 1; | |
2925 | ses->serverOS[2 * len] = 0; | |
2926 | ses->serverOS[1 + (2 * len)] = 0; | |
2927 | if (remaining_words > 0) { | |
2928 | len = UniStrnlen((wchar_t *) | |
2929 | bcc_ptr, | |
2930 | remaining_words | |
2931 | - 1); | |
cd49b492 | 2932 | kfree(ses->serverNOS); |
1da177e4 | 2933 | ses->serverNOS = |
e915fc49 | 2934 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2935 | GFP_KERNEL); |
2936 | cifs_strfromUCS_le(ses-> | |
2937 | serverNOS, | |
e89dc920 | 2938 | (__le16 *) |
1da177e4 LT |
2939 | bcc_ptr, |
2940 | len, | |
2941 | nls_codepage); | |
2942 | bcc_ptr += 2 * (len + 1); | |
2943 | ses->serverNOS[2 * len] = 0; | |
2944 | ses->serverNOS[1 + | |
2945 | (2 * len)] = 0; | |
2946 | remaining_words -= len + 1; | |
2947 | if (remaining_words > 0) { | |
50c2f753 SF |
2948 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
2949 | /* last string not always null terminated | |
2950 | (for e.g. for Windows XP & 2000) */ | |
cd49b492 | 2951 | kfree(ses->serverDomain); |
1da177e4 | 2952 | ses->serverDomain = |
e915fc49 | 2953 | kzalloc(2 * |
1da177e4 LT |
2954 | (len + |
2955 | 1), | |
2956 | GFP_KERNEL); | |
2957 | cifs_strfromUCS_le | |
e89dc920 SF |
2958 | (ses->serverDomain, |
2959 | (__le16 *)bcc_ptr, | |
2960 | len, nls_codepage); | |
1da177e4 LT |
2961 | bcc_ptr += |
2962 | 2 * (len + 1); | |
e89dc920 | 2963 | ses->serverDomain[2*len] |
1da177e4 | 2964 | = 0; |
e89dc920 SF |
2965 | ses->serverDomain |
2966 | [1 + (2 * len)] | |
1da177e4 LT |
2967 | = 0; |
2968 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 2969 | else { |
cd49b492 | 2970 | kfree(ses->serverDomain); |
1da177e4 | 2971 | ses->serverDomain = |
e915fc49 | 2972 | kzalloc(2, |
1da177e4 | 2973 | GFP_KERNEL); |
a424f8bf | 2974 | } |
1da177e4 | 2975 | } else { /* no room so create dummy domain and NOS string */ |
cd49b492 | 2976 | kfree(ses->serverDomain); |
1da177e4 | 2977 | ses->serverDomain = |
e915fc49 | 2978 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2979 | kfree(ses->serverNOS); |
1da177e4 | 2980 | ses->serverNOS = |
e915fc49 | 2981 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2982 | } |
2983 | } else { /* ASCII */ | |
2984 | len = strnlen(bcc_ptr, 1024); | |
2985 | if (((long) bcc_ptr + len) - (long) | |
2986 | pByteArea(smb_buffer_response) | |
2987 | <= BCC(smb_buffer_response)) { | |
fb8c4b14 | 2988 | if (ses->serverOS) |
a424f8bf | 2989 | kfree(ses->serverOS); |
1da177e4 | 2990 | ses->serverOS = |
e915fc49 | 2991 | kzalloc(len + 1, |
1da177e4 LT |
2992 | GFP_KERNEL); |
2993 | strncpy(ses->serverOS, | |
2994 | bcc_ptr, len); | |
2995 | ||
2996 | bcc_ptr += len; | |
2997 | bcc_ptr[0] = 0; /* null terminate string */ | |
2998 | bcc_ptr++; | |
2999 | ||
3000 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3001 | kfree(ses->serverNOS); |
1da177e4 | 3002 | ses->serverNOS = |
e915fc49 | 3003 | kzalloc(len + 1, |
1da177e4 LT |
3004 | GFP_KERNEL); |
3005 | strncpy(ses->serverNOS, bcc_ptr, len); | |
3006 | bcc_ptr += len; | |
3007 | bcc_ptr[0] = 0; | |
3008 | bcc_ptr++; | |
3009 | ||
3010 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3011 | kfree(ses->serverDomain); |
1da177e4 | 3012 | ses->serverDomain = |
e915fc49 | 3013 | kzalloc(len + 1, |
1da177e4 | 3014 | GFP_KERNEL); |
50c2f753 SF |
3015 | strncpy(ses->serverDomain, |
3016 | bcc_ptr, len); | |
1da177e4 LT |
3017 | bcc_ptr += len; |
3018 | bcc_ptr[0] = 0; | |
3019 | bcc_ptr++; | |
3020 | } else | |
3021 | cFYI(1, | |
63135e08 SF |
3022 | ("field of length %d " |
3023 | "extends beyond end of smb", | |
1da177e4 LT |
3024 | len)); |
3025 | } | |
3026 | } else { | |
50c2f753 SF |
3027 | cERROR(1, ("Security Blob Length extends beyond" |
3028 | " end of SMB")); | |
1da177e4 LT |
3029 | } |
3030 | } else { | |
3031 | cERROR(1, ("No session structure passed in.")); | |
3032 | } | |
3033 | } else { | |
3034 | cERROR(1, | |
5815449d | 3035 | (" Invalid Word count %d:", |
1da177e4 LT |
3036 | smb_buffer_response->WordCount)); |
3037 | rc = -EIO; | |
3038 | } | |
3039 | ||
a8a11d39 | 3040 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3041 | |
3042 | return rc; | |
3043 | } | |
3044 | static int | |
3045 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
4b18f2a9 | 3046 | char *ntlm_session_key, bool ntlmv2_flag, |
6345a3a8 | 3047 | const struct nls_table *nls_codepage) |
1da177e4 LT |
3048 | { |
3049 | struct smb_hdr *smb_buffer; | |
3050 | struct smb_hdr *smb_buffer_response; | |
3051 | SESSION_SETUP_ANDX *pSMB; | |
3052 | SESSION_SETUP_ANDX *pSMBr; | |
3053 | char *bcc_ptr; | |
3054 | char *user; | |
3055 | char *domain; | |
3056 | int rc = 0; | |
3057 | int remaining_words = 0; | |
3058 | int bytes_returned = 0; | |
3059 | int len; | |
6345a3a8 | 3060 | int SecurityBlobLength = sizeof(AUTHENTICATE_MESSAGE); |
1da177e4 LT |
3061 | PAUTHENTICATE_MESSAGE SecurityBlob; |
3062 | __u32 negotiate_flags, capabilities; | |
3063 | __u16 count; | |
3064 | ||
3065 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
fb8c4b14 | 3066 | if (ses == NULL) |
1da177e4 LT |
3067 | return -EINVAL; |
3068 | user = ses->userName; | |
3069 | domain = ses->domainName; | |
3070 | smb_buffer = cifs_buf_get(); | |
3071 | if (smb_buffer == NULL) { | |
3072 | return -ENOMEM; | |
3073 | } | |
3074 | smb_buffer_response = smb_buffer; | |
6345a3a8 CG |
3075 | pSMB = (SESSION_SETUP_ANDX *)smb_buffer; |
3076 | pSMBr = (SESSION_SETUP_ANDX *)smb_buffer_response; | |
1da177e4 LT |
3077 | |
3078 | /* send SMBsessionSetup here */ | |
3079 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
3080 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
3081 | |
3082 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3083 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
3084 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
3085 | pSMB->req.AndXCommand = 0xFF; | |
3086 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
3087 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
3088 | ||
3089 | pSMB->req.hdr.Uid = ses->Suid; | |
3090 | ||
fb8c4b14 | 3091 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3092 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3093 | ||
3094 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
6345a3a8 | 3095 | CAP_EXTENDED_SECURITY; |
1da177e4 LT |
3096 | if (ses->capabilities & CAP_UNICODE) { |
3097 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3098 | capabilities |= CAP_UNICODE; | |
3099 | } | |
3100 | if (ses->capabilities & CAP_STATUS32) { | |
3101 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3102 | capabilities |= CAP_STATUS32; | |
3103 | } | |
3104 | if (ses->capabilities & CAP_DFS) { | |
3105 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3106 | capabilities |= CAP_DFS; | |
3107 | } | |
3108 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
3109 | ||
6345a3a8 CG |
3110 | bcc_ptr = (char *)&pSMB->req.SecurityBlob; |
3111 | SecurityBlob = (PAUTHENTICATE_MESSAGE)bcc_ptr; | |
1da177e4 LT |
3112 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); |
3113 | SecurityBlob->MessageType = NtLmAuthenticate; | |
3114 | bcc_ptr += SecurityBlobLength; | |
6345a3a8 CG |
3115 | negotiate_flags = NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | |
3116 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
3117 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
fb8c4b14 | 3118 | if (sign_CIFS_PDUs) |
1da177e4 | 3119 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 3120 | if (ntlmv2_flag) |
1da177e4 LT |
3121 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; |
3122 | ||
3123 | /* setup pointers to domain name and workstation name */ | |
3124 | ||
3125 | SecurityBlob->WorkstationName.Buffer = 0; | |
3126 | SecurityBlob->WorkstationName.Length = 0; | |
3127 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
3128 | SecurityBlob->SessionKey.Length = 0; | |
3129 | SecurityBlob->SessionKey.MaximumLength = 0; | |
3130 | SecurityBlob->SessionKey.Buffer = 0; | |
3131 | ||
3132 | SecurityBlob->LmChallengeResponse.Length = 0; | |
3133 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
3134 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
3135 | ||
3136 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 3137 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 3138 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
3139 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
3140 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
3141 | SecurityBlob->NtChallengeResponse.Buffer = |
3142 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
3143 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
3144 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
3145 | |
3146 | if (ses->capabilities & CAP_UNICODE) { | |
3147 | if (domain == NULL) { | |
3148 | SecurityBlob->DomainName.Buffer = 0; | |
3149 | SecurityBlob->DomainName.Length = 0; | |
3150 | SecurityBlob->DomainName.MaximumLength = 0; | |
3151 | } else { | |
77159b4d | 3152 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 | 3153 | nls_codepage); |
77159b4d | 3154 | ln *= 2; |
1da177e4 | 3155 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3156 | cpu_to_le16(ln); |
1da177e4 LT |
3157 | SecurityBlob->DomainName.Buffer = |
3158 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3159 | bcc_ptr += ln; |
3160 | SecurityBlobLength += ln; | |
3161 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3162 | } |
3163 | if (user == NULL) { | |
3164 | SecurityBlob->UserName.Buffer = 0; | |
3165 | SecurityBlob->UserName.Length = 0; | |
3166 | SecurityBlob->UserName.MaximumLength = 0; | |
3167 | } else { | |
77159b4d | 3168 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 | 3169 | nls_codepage); |
77159b4d | 3170 | ln *= 2; |
1da177e4 | 3171 | SecurityBlob->UserName.MaximumLength = |
77159b4d | 3172 | cpu_to_le16(ln); |
1da177e4 LT |
3173 | SecurityBlob->UserName.Buffer = |
3174 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3175 | bcc_ptr += ln; |
3176 | SecurityBlobLength += ln; | |
3177 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3178 | } |
3179 | ||
63135e08 SF |
3180 | /* SecurityBlob->WorkstationName.Length = |
3181 | cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); | |
1da177e4 | 3182 | SecurityBlob->WorkstationName.Length *= 2; |
63135e08 SF |
3183 | SecurityBlob->WorkstationName.MaximumLength = |
3184 | cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
3185 | SecurityBlob->WorkstationName.Buffer = | |
3186 | cpu_to_le32(SecurityBlobLength); | |
1da177e4 LT |
3187 | bcc_ptr += SecurityBlob->WorkstationName.Length; |
3188 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
63135e08 SF |
3189 | SecurityBlob->WorkstationName.Length = |
3190 | cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
1da177e4 LT |
3191 | |
3192 | if ((long) bcc_ptr % 2) { | |
3193 | *bcc_ptr = 0; | |
3194 | bcc_ptr++; | |
3195 | } | |
3196 | bytes_returned = | |
e89dc920 | 3197 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
3198 | 32, nls_codepage); |
3199 | bcc_ptr += 2 * bytes_returned; | |
3200 | bytes_returned = | |
e9ff3990 | 3201 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
3202 | nls_codepage); |
3203 | bcc_ptr += 2 * bytes_returned; | |
3204 | bcc_ptr += 2; /* null term version string */ | |
3205 | bytes_returned = | |
e89dc920 | 3206 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
3207 | 64, nls_codepage); |
3208 | bcc_ptr += 2 * bytes_returned; | |
3209 | *(bcc_ptr + 1) = 0; | |
3210 | *(bcc_ptr + 2) = 0; | |
3211 | bcc_ptr += 2; /* null terminate network opsys string */ | |
3212 | *(bcc_ptr + 1) = 0; | |
3213 | *(bcc_ptr + 2) = 0; | |
3214 | bcc_ptr += 2; /* null domain */ | |
3215 | } else { /* ASCII */ | |
3216 | if (domain == NULL) { | |
3217 | SecurityBlob->DomainName.Buffer = 0; | |
3218 | SecurityBlob->DomainName.Length = 0; | |
3219 | SecurityBlob->DomainName.MaximumLength = 0; | |
3220 | } else { | |
77159b4d | 3221 | __u16 ln; |
1da177e4 LT |
3222 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; |
3223 | strncpy(bcc_ptr, domain, 63); | |
77159b4d | 3224 | ln = strnlen(domain, 64); |
1da177e4 | 3225 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3226 | cpu_to_le16(ln); |
1da177e4 LT |
3227 | SecurityBlob->DomainName.Buffer = |
3228 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3229 | bcc_ptr += ln; |
3230 | SecurityBlobLength += ln; | |
3231 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3232 | } |
3233 | if (user == NULL) { | |
3234 | SecurityBlob->UserName.Buffer = 0; | |
3235 | SecurityBlob->UserName.Length = 0; | |
3236 | SecurityBlob->UserName.MaximumLength = 0; | |
3237 | } else { | |
77159b4d | 3238 | __u16 ln; |
1da177e4 | 3239 | strncpy(bcc_ptr, user, 63); |
77159b4d SF |
3240 | ln = strnlen(user, 64); |
3241 | SecurityBlob->UserName.MaximumLength = cpu_to_le16(ln); | |
1da177e4 | 3242 | SecurityBlob->UserName.Buffer = |
77159b4d SF |
3243 | cpu_to_le32(SecurityBlobLength); |
3244 | bcc_ptr += ln; | |
3245 | SecurityBlobLength += ln; | |
3246 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3247 | } |
3248 | /* BB fill in our workstation name if known BB */ | |
3249 | ||
3250 | strcpy(bcc_ptr, "Linux version "); | |
3251 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
3252 | strcpy(bcc_ptr, utsname()->release); |
3253 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
3254 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
3255 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
3256 | bcc_ptr++; /* null domain */ | |
3257 | *bcc_ptr = 0; | |
3258 | } | |
3259 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
3260 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
3261 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
3262 | smb_buffer->smb_buf_length += count; | |
3263 | pSMB->req.ByteCount = cpu_to_le16(count); | |
3264 | ||
3265 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 3266 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 | 3267 | if (rc) { |
6345a3a8 CG |
3268 | /* rc = map_smb_to_linux_error(smb_buffer_response) done in SendReceive now */ |
3269 | } else if ((smb_buffer_response->WordCount == 3) || | |
3270 | (smb_buffer_response->WordCount == 4)) { | |
1da177e4 | 3271 | __u16 action = le16_to_cpu(pSMBr->resp.Action); |
6345a3a8 | 3272 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); |
1da177e4 | 3273 | if (action & GUEST_LOGIN) |
50c2f753 SF |
3274 | cFYI(1, (" Guest login")); /* BB Should we set anything |
3275 | in SesInfo struct ? */ | |
3276 | /* if (SecurityBlob2->MessageType != NtLm??) { | |
3277 | cFYI("Unexpected message type on auth response is %d")); | |
3278 | } */ | |
3279 | ||
1da177e4 LT |
3280 | if (ses) { |
3281 | cFYI(1, | |
50c2f753 | 3282 | ("Check challenge UID %d vs auth response UID %d", |
1da177e4 | 3283 | ses->Suid, smb_buffer_response->Uid)); |
50c2f753 SF |
3284 | /* UID left in wire format */ |
3285 | ses->Suid = smb_buffer_response->Uid; | |
3286 | bcc_ptr = pByteArea(smb_buffer_response); | |
3287 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
3288 | if ((pSMBr->resp.hdr.WordCount == 3) |
3289 | || ((pSMBr->resp.hdr.WordCount == 4) | |
3290 | && (blob_len < | |
3291 | pSMBr->resp.ByteCount))) { | |
3292 | if (pSMBr->resp.hdr.WordCount == 4) { | |
3293 | bcc_ptr += | |
3294 | blob_len; | |
3295 | cFYI(1, | |
3296 | ("Security Blob Length %d ", | |
3297 | blob_len)); | |
3298 | } | |
3299 | ||
3300 | cFYI(1, | |
3301 | ("NTLMSSP response to Authenticate ")); | |
3302 | ||
3303 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3304 | if ((long) (bcc_ptr) % 2) { | |
3305 | remaining_words = | |
3306 | (BCC(smb_buffer_response) | |
3307 | - 1) / 2; | |
3308 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
3309 | } else { | |
3310 | remaining_words = BCC(smb_buffer_response) / 2; | |
3311 | } | |
77159b4d SF |
3312 | len = UniStrnlen((wchar_t *) bcc_ptr, |
3313 | remaining_words - 1); | |
1da177e4 LT |
3314 | /* We look for obvious messed up bcc or strings in response so we do not go off |
3315 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
3316 | terminating last Unicode string in response */ | |
fb8c4b14 | 3317 | if (ses->serverOS) |
08775834 | 3318 | kfree(ses->serverOS); |
1da177e4 | 3319 | ses->serverOS = |
e915fc49 | 3320 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 3321 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 3322 | (__le16 *) |
1da177e4 LT |
3323 | bcc_ptr, len, |
3324 | nls_codepage); | |
3325 | bcc_ptr += 2 * (len + 1); | |
3326 | remaining_words -= len + 1; | |
3327 | ses->serverOS[2 * len] = 0; | |
3328 | ses->serverOS[1 + (2 * len)] = 0; | |
3329 | if (remaining_words > 0) { | |
3330 | len = UniStrnlen((wchar_t *) | |
3331 | bcc_ptr, | |
3332 | remaining_words | |
3333 | - 1); | |
cd49b492 | 3334 | kfree(ses->serverNOS); |
1da177e4 | 3335 | ses->serverNOS = |
e915fc49 | 3336 | kzalloc(2 * (len + 1), |
1da177e4 LT |
3337 | GFP_KERNEL); |
3338 | cifs_strfromUCS_le(ses-> | |
3339 | serverNOS, | |
e89dc920 | 3340 | (__le16 *) |
1da177e4 LT |
3341 | bcc_ptr, |
3342 | len, | |
3343 | nls_codepage); | |
3344 | bcc_ptr += 2 * (len + 1); | |
3345 | ses->serverNOS[2 * len] = 0; | |
3346 | ses->serverNOS[1+(2*len)] = 0; | |
3347 | remaining_words -= len + 1; | |
3348 | if (remaining_words > 0) { | |
50c2f753 | 3349 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 3350 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ |
fb8c4b14 | 3351 | if (ses->serverDomain) |
a424f8bf | 3352 | kfree(ses->serverDomain); |
1da177e4 | 3353 | ses->serverDomain = |
e915fc49 | 3354 | kzalloc(2 * |
1da177e4 LT |
3355 | (len + |
3356 | 1), | |
3357 | GFP_KERNEL); | |
3358 | cifs_strfromUCS_le | |
3359 | (ses-> | |
3360 | serverDomain, | |
e89dc920 | 3361 | (__le16 *) |
1da177e4 LT |
3362 | bcc_ptr, len, |
3363 | nls_codepage); | |
3364 | bcc_ptr += | |
3365 | 2 * (len + 1); | |
3366 | ses-> | |
3367 | serverDomain[2 | |
3368 | * len] | |
3369 | = 0; | |
3370 | ses-> | |
3371 | serverDomain[1 | |
3372 | + | |
3373 | (2 | |
3374 | * | |
3375 | len)] | |
3376 | = 0; | |
3377 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 3378 | else { |
fb8c4b14 | 3379 | if (ses->serverDomain) |
a424f8bf | 3380 | kfree(ses->serverDomain); |
e915fc49 | 3381 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 3382 | } |
1da177e4 | 3383 | } else { /* no room so create dummy domain and NOS string */ |
fb8c4b14 | 3384 | if (ses->serverDomain) |
a424f8bf | 3385 | kfree(ses->serverDomain); |
e915fc49 | 3386 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 3387 | kfree(ses->serverNOS); |
e915fc49 | 3388 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3389 | } |
3390 | } else { /* ASCII */ | |
3391 | len = strnlen(bcc_ptr, 1024); | |
50c2f753 SF |
3392 | if (((long) bcc_ptr + len) - |
3393 | (long) pByteArea(smb_buffer_response) | |
63135e08 | 3394 | <= BCC(smb_buffer_response)) { |
fb8c4b14 | 3395 | if (ses->serverOS) |
a424f8bf | 3396 | kfree(ses->serverOS); |
77159b4d | 3397 | ses->serverOS = kzalloc(len + 1, GFP_KERNEL); |
1da177e4 LT |
3398 | strncpy(ses->serverOS,bcc_ptr, len); |
3399 | ||
3400 | bcc_ptr += len; | |
3401 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3402 | bcc_ptr++; | |
3403 | ||
3404 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3405 | kfree(ses->serverNOS); |
50c2f753 SF |
3406 | ses->serverNOS = kzalloc(len+1, |
3407 | GFP_KERNEL); | |
63135e08 SF |
3408 | strncpy(ses->serverNOS, |
3409 | bcc_ptr, len); | |
1da177e4 LT |
3410 | bcc_ptr += len; |
3411 | bcc_ptr[0] = 0; | |
3412 | bcc_ptr++; | |
3413 | ||
3414 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 3415 | if (ses->serverDomain) |
a424f8bf | 3416 | kfree(ses->serverDomain); |
63135e08 SF |
3417 | ses->serverDomain = |
3418 | kzalloc(len+1, | |
3419 | GFP_KERNEL); | |
3420 | strncpy(ses->serverDomain, | |
3421 | bcc_ptr, len); | |
1da177e4 LT |
3422 | bcc_ptr += len; |
3423 | bcc_ptr[0] = 0; | |
3424 | bcc_ptr++; | |
3425 | } else | |
6345a3a8 | 3426 | cFYI(1, ("field of length %d " |
63135e08 | 3427 | "extends beyond end of smb ", |
1da177e4 LT |
3428 | len)); |
3429 | } | |
3430 | } else { | |
6345a3a8 | 3431 | cERROR(1, ("Security Blob extends beyond end " |
63135e08 | 3432 | "of SMB")); |
1da177e4 LT |
3433 | } |
3434 | } else { | |
3435 | cERROR(1, ("No session structure passed in.")); | |
3436 | } | |
3437 | } else { | |
6345a3a8 | 3438 | cERROR(1, ("Invalid Word count %d: ", |
1da177e4 LT |
3439 | smb_buffer_response->WordCount)); |
3440 | rc = -EIO; | |
3441 | } | |
3442 | ||
a8a11d39 | 3443 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3444 | |
3445 | return rc; | |
3446 | } | |
3447 | ||
3448 | int | |
3449 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3450 | const char *tree, struct cifsTconInfo *tcon, | |
3451 | const struct nls_table *nls_codepage) | |
3452 | { | |
3453 | struct smb_hdr *smb_buffer; | |
3454 | struct smb_hdr *smb_buffer_response; | |
3455 | TCONX_REQ *pSMB; | |
3456 | TCONX_RSP *pSMBr; | |
3457 | unsigned char *bcc_ptr; | |
3458 | int rc = 0; | |
3459 | int length; | |
3460 | __u16 count; | |
3461 | ||
3462 | if (ses == NULL) | |
3463 | return -EIO; | |
3464 | ||
3465 | smb_buffer = cifs_buf_get(); | |
3466 | if (smb_buffer == NULL) { | |
3467 | return -ENOMEM; | |
3468 | } | |
3469 | smb_buffer_response = smb_buffer; | |
3470 | ||
3471 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3472 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3473 | |
3474 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3475 | smb_buffer->Uid = ses->Suid; |
3476 | pSMB = (TCONX_REQ *) smb_buffer; | |
3477 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3478 | ||
3479 | pSMB->AndXCommand = 0xFF; | |
3480 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3481 | bcc_ptr = &pSMB->Password[0]; |
fb8c4b14 | 3482 | if ((ses->server->secMode) & SECMODE_USER) { |
eeac8047 | 3483 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
7c7b25bc | 3484 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3485 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3486 | /* already aligned so no need to do it below */ |
eeac8047 | 3487 | } else { |
7c7b25bc | 3488 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3489 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3490 | specified as required (when that support is added to | |
3491 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3492 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3493 | by Samba (not sure whether other servers allow |
3494 | NTLMv2 password here) */ | |
7c7b25bc | 3495 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
50c2f753 | 3496 | if ((extended_security & CIFSSEC_MAY_LANMAN) && |
7c7b25bc SF |
3497 | (ses->server->secType == LANMAN)) |
3498 | calc_lanman_hash(ses, bcc_ptr); | |
3499 | else | |
3500 | #endif /* CIFS_WEAK_PW_HASH */ | |
eeac8047 SF |
3501 | SMBNTencrypt(ses->password, |
3502 | ses->server->cryptKey, | |
3503 | bcc_ptr); | |
3504 | ||
7c7b25bc | 3505 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
fb8c4b14 | 3506 | if (ses->capabilities & CAP_UNICODE) { |
7c7b25bc SF |
3507 | /* must align unicode strings */ |
3508 | *bcc_ptr = 0; /* null byte password */ | |
3509 | bcc_ptr++; | |
3510 | } | |
eeac8047 | 3511 | } |
1da177e4 | 3512 | |
50c2f753 | 3513 | if (ses->server->secMode & |
a878fb22 | 3514 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3515 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3516 | ||
3517 | if (ses->capabilities & CAP_STATUS32) { | |
3518 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3519 | } | |
3520 | if (ses->capabilities & CAP_DFS) { | |
3521 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3522 | } | |
3523 | if (ses->capabilities & CAP_UNICODE) { | |
3524 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3525 | length = | |
50c2f753 SF |
3526 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3527 | 6 /* max utf8 char length in bytes */ * | |
a878fb22 SF |
3528 | (/* server len*/ + 256 /* share len */), nls_codepage); |
3529 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3530 | bcc_ptr += 2; /* skip trailing null */ |
3531 | } else { /* ASCII */ | |
1da177e4 LT |
3532 | strcpy(bcc_ptr, tree); |
3533 | bcc_ptr += strlen(tree) + 1; | |
3534 | } | |
3535 | strcpy(bcc_ptr, "?????"); | |
3536 | bcc_ptr += strlen("?????"); | |
3537 | bcc_ptr += 1; | |
3538 | count = bcc_ptr - &pSMB->Password[0]; | |
3539 | pSMB->hdr.smb_buf_length += count; | |
3540 | pSMB->ByteCount = cpu_to_le16(count); | |
3541 | ||
133672ef SF |
3542 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, |
3543 | CIFS_STD_OP); | |
1da177e4 LT |
3544 | |
3545 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3546 | /* above now done in SendReceive */ | |
3547 | if ((rc == 0) && (tcon != NULL)) { | |
3548 | tcon->tidStatus = CifsGood; | |
3b795210 | 3549 | tcon->need_reconnect = false; |
1da177e4 LT |
3550 | tcon->tid = smb_buffer_response->Tid; |
3551 | bcc_ptr = pByteArea(smb_buffer_response); | |
3552 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
50c2f753 | 3553 | /* skip service field (NB: this field is always ASCII) */ |
7f8ed420 SF |
3554 | if (length == 3) { |
3555 | if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') && | |
3556 | (bcc_ptr[2] == 'C')) { | |
3557 | cFYI(1, ("IPC connection")); | |
3558 | tcon->ipc = 1; | |
3559 | } | |
3560 | } else if (length == 2) { | |
3561 | if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) { | |
3562 | /* the most common case */ | |
3563 | cFYI(1, ("disk share connection")); | |
3564 | } | |
3565 | } | |
50c2f753 | 3566 | bcc_ptr += length + 1; |
1da177e4 LT |
3567 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
3568 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3569 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3570 | if ((bcc_ptr + (2 * length)) - | |
3571 | pByteArea(smb_buffer_response) <= | |
3572 | BCC(smb_buffer_response)) { | |
f99d49ad | 3573 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3574 | tcon->nativeFileSystem = |
e915fc49 | 3575 | kzalloc(length + 2, GFP_KERNEL); |
88f370a6 SF |
3576 | if (tcon->nativeFileSystem) |
3577 | cifs_strfromUCS_le( | |
3578 | tcon->nativeFileSystem, | |
3579 | (__le16 *) bcc_ptr, | |
3580 | length, nls_codepage); | |
1da177e4 LT |
3581 | bcc_ptr += 2 * length; |
3582 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3583 | bcc_ptr[1] = 0; | |
3584 | bcc_ptr += 2; | |
3585 | } | |
50c2f753 | 3586 | /* else do not bother copying these information fields*/ |
1da177e4 LT |
3587 | } else { |
3588 | length = strnlen(bcc_ptr, 1024); | |
3589 | if ((bcc_ptr + length) - | |
3590 | pByteArea(smb_buffer_response) <= | |
3591 | BCC(smb_buffer_response)) { | |
f99d49ad | 3592 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3593 | tcon->nativeFileSystem = |
e915fc49 | 3594 | kzalloc(length + 1, GFP_KERNEL); |
88f370a6 SF |
3595 | if (tcon->nativeFileSystem) |
3596 | strncpy(tcon->nativeFileSystem, bcc_ptr, | |
3597 | length); | |
1da177e4 | 3598 | } |
50c2f753 | 3599 | /* else do not bother copying these information fields*/ |
1da177e4 | 3600 | } |
fb8c4b14 | 3601 | if ((smb_buffer_response->WordCount == 3) || |
1a4e15a0 SF |
3602 | (smb_buffer_response->WordCount == 7)) |
3603 | /* field is in same location */ | |
3979877e SF |
3604 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
3605 | else | |
3606 | tcon->Flags = 0; | |
1da177e4 LT |
3607 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3608 | } else if ((rc == 0) && tcon == NULL) { | |
50c2f753 | 3609 | /* all we need to save for IPC$ connection */ |
1da177e4 LT |
3610 | ses->ipc_tid = smb_buffer_response->Tid; |
3611 | } | |
3612 | ||
a8a11d39 | 3613 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3614 | return rc; |
3615 | } | |
3616 | ||
3617 | int | |
3618 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3619 | { | |
3620 | int rc = 0; | |
50c2f753 | 3621 | char *tmp; |
1da177e4 | 3622 | |
f1987b44 JL |
3623 | if (cifs_sb->tcon) |
3624 | cifs_put_tcon(cifs_sb->tcon); | |
50c2f753 | 3625 | |
1da177e4 | 3626 | cifs_sb->tcon = NULL; |
2fe87f02 SF |
3627 | tmp = cifs_sb->prepath; |
3628 | cifs_sb->prepathlen = 0; | |
3629 | cifs_sb->prepath = NULL; | |
3630 | kfree(tmp); | |
1da177e4 | 3631 | |
88e7d705 | 3632 | return rc; |
50c2f753 | 3633 | } |
1da177e4 LT |
3634 | |
3635 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
50c2f753 | 3636 | struct nls_table *nls_info) |
1da177e4 LT |
3637 | { |
3638 | int rc = 0; | |
7c7b25bc | 3639 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
4b18f2a9 | 3640 | bool ntlmv2_flag = false; |
ad009ac9 | 3641 | int first_time = 0; |
cb7691b6 | 3642 | struct TCP_Server_Info *server = pSesInfo->server; |
1da177e4 LT |
3643 | |
3644 | /* what if server changes its buffer size after dropping the session? */ | |
cb7691b6 | 3645 | if (server->maxBuf == 0) /* no need to send on reconnect */ { |
1da177e4 | 3646 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
cb7691b6 JL |
3647 | if (rc == -EAGAIN) { |
3648 | /* retry only once on 1st time connection */ | |
1da177e4 | 3649 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
50c2f753 | 3650 | if (rc == -EAGAIN) |
1da177e4 LT |
3651 | rc = -EHOSTDOWN; |
3652 | } | |
fb8c4b14 | 3653 | if (rc == 0) { |
1da177e4 | 3654 | spin_lock(&GlobalMid_Lock); |
cb7691b6 JL |
3655 | if (server->tcpStatus != CifsExiting) |
3656 | server->tcpStatus = CifsGood; | |
1da177e4 LT |
3657 | else |
3658 | rc = -EHOSTDOWN; | |
3659 | spin_unlock(&GlobalMid_Lock); | |
3660 | ||
3661 | } | |
ad009ac9 | 3662 | first_time = 1; |
1da177e4 | 3663 | } |
26b994fa SF |
3664 | |
3665 | if (rc) | |
3666 | goto ss_err_exit; | |
3667 | ||
3668 | pSesInfo->flags = 0; | |
cb7691b6 | 3669 | pSesInfo->capabilities = server->capabilities; |
26b994fa SF |
3670 | if (linuxExtEnabled == 0) |
3671 | pSesInfo->capabilities &= (~CAP_UNIX); | |
ad009ac9 | 3672 | /* pSesInfo->sequence_number = 0;*/ |
26b994fa | 3673 | cFYI(1, ("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", |
cb7691b6 JL |
3674 | server->secMode, server->capabilities, server->timeAdj)); |
3675 | ||
26b994fa SF |
3676 | if (experimEnabled < 2) |
3677 | rc = CIFS_SessSetup(xid, pSesInfo, first_time, nls_info); | |
3678 | else if (extended_security | |
3679 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
cb7691b6 | 3680 | && (server->secType == NTLMSSP)) { |
26b994fa SF |
3681 | rc = -EOPNOTSUPP; |
3682 | } else if (extended_security | |
3683 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
cb7691b6 | 3684 | && (server->secType == RawNTLMSSP)) { |
26b994fa SF |
3685 | cFYI(1, ("NTLMSSP sesssetup")); |
3686 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, pSesInfo, &ntlmv2_flag, | |
3687 | nls_info); | |
3688 | if (!rc) { | |
3689 | if (ntlmv2_flag) { | |
3690 | char *v2_response; | |
3691 | cFYI(1, ("more secure NTLM ver2 hash")); | |
3692 | if (CalcNTLMv2_partial_mac_key(pSesInfo, | |
3693 | nls_info)) { | |
3694 | rc = -ENOMEM; | |
3695 | goto ss_err_exit; | |
3696 | } else | |
3697 | v2_response = kmalloc(16 + 64 /* blob*/, | |
3698 | GFP_KERNEL); | |
3699 | if (v2_response) { | |
3700 | CalcNTLMv2_response(pSesInfo, | |
3701 | v2_response); | |
3702 | /* if (first_time) | |
3703 | cifs_calculate_ntlmv2_mac_key */ | |
3704 | kfree(v2_response); | |
1da177e4 | 3705 | /* BB Put dummy sig in SessSetup PDU? */ |
1da177e4 | 3706 | } else { |
26b994fa SF |
3707 | rc = -ENOMEM; |
3708 | goto ss_err_exit; | |
1da177e4 | 3709 | } |
26b994fa SF |
3710 | |
3711 | } else { | |
3712 | SMBNTencrypt(pSesInfo->password, | |
cb7691b6 | 3713 | server->cryptKey, |
26b994fa SF |
3714 | ntlm_session_key); |
3715 | ||
3716 | if (first_time) | |
3717 | cifs_calculate_mac_key( | |
cb7691b6 | 3718 | &server->mac_signing_key, |
26b994fa SF |
3719 | ntlm_session_key, |
3720 | pSesInfo->password); | |
3721 | } | |
1da177e4 LT |
3722 | /* for better security the weaker lanman hash not sent |
3723 | in AuthSessSetup so we no longer calculate it */ | |
3724 | ||
26b994fa SF |
3725 | rc = CIFSNTLMSSPAuthSessSetup(xid, pSesInfo, |
3726 | ntlm_session_key, | |
3727 | ntlmv2_flag, | |
3728 | nls_info); | |
3729 | } | |
3730 | } else { /* old style NTLM 0.12 session setup */ | |
cb7691b6 | 3731 | SMBNTencrypt(pSesInfo->password, server->cryptKey, |
26b994fa | 3732 | ntlm_session_key); |
1da177e4 | 3733 | |
26b994fa | 3734 | if (first_time) |
cb7691b6 JL |
3735 | cifs_calculate_mac_key(&server->mac_signing_key, |
3736 | ntlm_session_key, | |
3737 | pSesInfo->password); | |
ad009ac9 | 3738 | |
26b994fa SF |
3739 | rc = CIFSSessSetup(xid, pSesInfo, ntlm_session_key, nls_info); |
3740 | } | |
3741 | if (rc) { | |
3742 | cERROR(1, ("Send error in SessSetup = %d", rc)); | |
3743 | } else { | |
3744 | cFYI(1, ("CIFS Session Established successfully")); | |
469ee614 | 3745 | spin_lock(&GlobalMid_Lock); |
1da177e4 | 3746 | pSesInfo->status = CifsGood; |
3b795210 | 3747 | pSesInfo->need_reconnect = false; |
469ee614 | 3748 | spin_unlock(&GlobalMid_Lock); |
1da177e4 | 3749 | } |
26b994fa | 3750 | |
1da177e4 LT |
3751 | ss_err_exit: |
3752 | return rc; | |
3753 | } | |
3754 |