Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * fs/cifs/connect.c | |
3 | * | |
366781c1 | 4 | * Copyright (C) International Business Machines Corp., 2002,2008 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * This library is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU Lesser General Public License as published | |
9 | * by the Free Software Foundation; either version 2.1 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This library is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
15 | * the GNU Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public License | |
18 | * along with this library; if not, write to the Free Software | |
fb8c4b14 | 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
1da177e4 LT |
20 | */ |
21 | #include <linux/fs.h> | |
22 | #include <linux/net.h> | |
23 | #include <linux/string.h> | |
24 | #include <linux/list.h> | |
25 | #include <linux/wait.h> | |
26 | #include <linux/ipv6.h> | |
27 | #include <linux/pagemap.h> | |
28 | #include <linux/ctype.h> | |
29 | #include <linux/utsname.h> | |
30 | #include <linux/mempool.h> | |
b8643e1b | 31 | #include <linux/delay.h> |
f191401f | 32 | #include <linux/completion.h> |
aaf737ad | 33 | #include <linux/kthread.h> |
0ae0efad | 34 | #include <linux/pagevec.h> |
7dfb7103 | 35 | #include <linux/freezer.h> |
1da177e4 LT |
36 | #include <asm/uaccess.h> |
37 | #include <asm/processor.h> | |
38 | #include "cifspdu.h" | |
39 | #include "cifsglob.h" | |
40 | #include "cifsproto.h" | |
41 | #include "cifs_unicode.h" | |
42 | #include "cifs_debug.h" | |
43 | #include "cifs_fs_sb.h" | |
44 | #include "ntlmssp.h" | |
45 | #include "nterr.h" | |
46 | #include "rfc1002pdu.h" | |
a2653eba | 47 | #include "cn_cifs.h" |
1da177e4 LT |
48 | |
49 | #define CIFS_PORT 445 | |
50 | #define RFC1001_PORT 139 | |
51 | ||
1da177e4 LT |
52 | extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, |
53 | unsigned char *p24); | |
54 | ||
55 | extern mempool_t *cifs_req_poolp; | |
56 | ||
57 | struct smb_vol { | |
58 | char *username; | |
59 | char *password; | |
60 | char *domainname; | |
61 | char *UNC; | |
62 | char *UNCip; | |
95b1cb90 | 63 | char *in6_addr; /* ipv6 address as human readable form of in6_addr */ |
1da177e4 LT |
64 | char *iocharset; /* local code page for mapping to and from Unicode */ |
65 | char source_rfc1001_name[16]; /* netbios name of client */ | |
a10faeb2 | 66 | char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */ |
1da177e4 LT |
67 | uid_t linux_uid; |
68 | gid_t linux_gid; | |
69 | mode_t file_mode; | |
70 | mode_t dir_mode; | |
189acaae | 71 | unsigned secFlg; |
4b18f2a9 SF |
72 | bool rw:1; |
73 | bool retry:1; | |
74 | bool intr:1; | |
75 | bool setuids:1; | |
76 | bool override_uid:1; | |
77 | bool override_gid:1; | |
d0a9c078 | 78 | bool dynperm:1; |
4b18f2a9 SF |
79 | bool noperm:1; |
80 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
81 | bool cifs_acl:1; | |
82 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ | |
83 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
84 | bool direct_io:1; | |
95b1cb90 SF |
85 | bool remap:1; /* set to remap seven reserved chars in filenames */ |
86 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ | |
4b18f2a9 SF |
87 | bool no_linux_ext:1; |
88 | bool sfu_emul:1; | |
95b1cb90 SF |
89 | bool nullauth:1; /* attempt to authenticate with null user */ |
90 | bool nocase:1; /* request case insensitive filenames */ | |
91 | bool nobrl:1; /* disable sending byte range locks to srv */ | |
92 | bool seal:1; /* request transport encryption on share */ | |
84210e91 SF |
93 | bool nodfs:1; /* Do not request DFS, even if available */ |
94 | bool local_lease:1; /* check leases only on local system, not remote */ | |
edf1ae40 SF |
95 | bool noblocksnd:1; |
96 | bool noautotune:1; | |
1da177e4 LT |
97 | unsigned int rsize; |
98 | unsigned int wsize; | |
99 | unsigned int sockopt; | |
100 | unsigned short int port; | |
fb8c4b14 | 101 | char *prepath; |
1da177e4 LT |
102 | }; |
103 | ||
bcf4b106 | 104 | static int ipv4_connect(struct TCP_Server_Info *server); |
fb8c4b14 | 105 | static int ipv6_connect(struct sockaddr_in6 *psin_server, |
edf1ae40 | 106 | struct socket **csocket, bool noblocksnd); |
1da177e4 LT |
107 | |
108 | ||
fb8c4b14 | 109 | /* |
1da177e4 | 110 | * cifs tcp session reconnection |
fb8c4b14 | 111 | * |
1da177e4 LT |
112 | * mark tcp session as reconnecting so temporarily locked |
113 | * mark all smb sessions as reconnecting for tcp session | |
114 | * reconnect tcp session | |
115 | * wake up waiters on reconnection? - (not needed currently) | |
116 | */ | |
117 | ||
2cd646a2 | 118 | static int |
1da177e4 LT |
119 | cifs_reconnect(struct TCP_Server_Info *server) |
120 | { | |
121 | int rc = 0; | |
f1987b44 | 122 | struct list_head *tmp, *tmp2; |
1da177e4 LT |
123 | struct cifsSesInfo *ses; |
124 | struct cifsTconInfo *tcon; | |
fb8c4b14 | 125 | struct mid_q_entry *mid_entry; |
50c2f753 | 126 | |
1da177e4 | 127 | spin_lock(&GlobalMid_Lock); |
469ee614 | 128 | if (server->tcpStatus == CifsExiting) { |
fb8c4b14 | 129 | /* the demux thread will exit normally |
1da177e4 LT |
130 | next time through the loop */ |
131 | spin_unlock(&GlobalMid_Lock); | |
132 | return rc; | |
133 | } else | |
134 | server->tcpStatus = CifsNeedReconnect; | |
135 | spin_unlock(&GlobalMid_Lock); | |
136 | server->maxBuf = 0; | |
137 | ||
e4eb295d | 138 | cFYI(1, ("Reconnecting tcp session")); |
1da177e4 LT |
139 | |
140 | /* before reconnecting the tcp session, mark the smb session (uid) | |
141 | and the tid bad so they are not used until reconnected */ | |
14fbf50d JL |
142 | read_lock(&cifs_tcp_ses_lock); |
143 | list_for_each(tmp, &server->smb_ses_list) { | |
144 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); | |
145 | ses->need_reconnect = true; | |
146 | ses->ipc_tid = 0; | |
f1987b44 JL |
147 | list_for_each(tmp2, &ses->tcon_list) { |
148 | tcon = list_entry(tmp2, struct cifsTconInfo, tcon_list); | |
3b795210 | 149 | tcon->need_reconnect = true; |
f1987b44 | 150 | } |
1da177e4 | 151 | } |
f1987b44 | 152 | read_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 153 | /* do not want to be sending data on a socket we are freeing */ |
72ca545b | 154 | mutex_lock(&server->srv_mutex); |
fb8c4b14 | 155 | if (server->ssocket) { |
467a8f8d | 156 | cFYI(1, ("State: 0x%x Flags: 0x%lx", server->ssocket->state, |
1da177e4 | 157 | server->ssocket->flags)); |
91cf45f0 | 158 | kernel_sock_shutdown(server->ssocket, SHUT_WR); |
fb8c4b14 | 159 | cFYI(1, ("Post shutdown state: 0x%x Flags: 0x%lx", |
467a8f8d | 160 | server->ssocket->state, |
1da177e4 LT |
161 | server->ssocket->flags)); |
162 | sock_release(server->ssocket); | |
163 | server->ssocket = NULL; | |
164 | } | |
165 | ||
166 | spin_lock(&GlobalMid_Lock); | |
167 | list_for_each(tmp, &server->pending_mid_q) { | |
168 | mid_entry = list_entry(tmp, struct | |
169 | mid_q_entry, | |
170 | qhead); | |
ad8b15f0 | 171 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { |
09d1db5c SF |
172 | /* Mark other intransit requests as needing |
173 | retry so we do not immediately mark the | |
174 | session bad again (ie after we reconnect | |
175 | below) as they timeout too */ | |
ad8b15f0 | 176 | mid_entry->midState = MID_RETRY_NEEDED; |
1da177e4 LT |
177 | } |
178 | } | |
179 | spin_unlock(&GlobalMid_Lock); | |
72ca545b | 180 | mutex_unlock(&server->srv_mutex); |
1da177e4 | 181 | |
469ee614 JL |
182 | while ((server->tcpStatus != CifsExiting) && |
183 | (server->tcpStatus != CifsGood)) { | |
6c3d8909 | 184 | try_to_freeze(); |
bcf4b106 | 185 | if (server->addr.sockAddr6.sin6_family == AF_INET6) |
fb8c4b14 | 186 | rc = ipv6_connect(&server->addr.sockAddr6, |
edf1ae40 | 187 | &server->ssocket, server->noautotune); |
bcf4b106 JL |
188 | else |
189 | rc = ipv4_connect(server); | |
fb8c4b14 SF |
190 | if (rc) { |
191 | cFYI(1, ("reconnect error %d", rc)); | |
0cb766ae | 192 | msleep(3000); |
1da177e4 LT |
193 | } else { |
194 | atomic_inc(&tcpSesReconnectCount); | |
195 | spin_lock(&GlobalMid_Lock); | |
469ee614 | 196 | if (server->tcpStatus != CifsExiting) |
1da177e4 | 197 | server->tcpStatus = CifsGood; |
ad009ac9 | 198 | server->sequence_number = 0; |
fb8c4b14 | 199 | spin_unlock(&GlobalMid_Lock); |
1da177e4 LT |
200 | /* atomic_set(&server->inFlight,0);*/ |
201 | wake_up(&server->response_q); | |
202 | } | |
203 | } | |
204 | return rc; | |
205 | } | |
206 | ||
fb8c4b14 | 207 | /* |
e4eb295d SF |
208 | return codes: |
209 | 0 not a transact2, or all data present | |
210 | >0 transact2 with that much data missing | |
211 | -EINVAL = invalid transact2 | |
212 | ||
213 | */ | |
fb8c4b14 | 214 | static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) |
e4eb295d | 215 | { |
fb8c4b14 SF |
216 | struct smb_t2_rsp *pSMBt; |
217 | int total_data_size; | |
e4eb295d SF |
218 | int data_in_this_rsp; |
219 | int remaining; | |
220 | ||
fb8c4b14 | 221 | if (pSMB->Command != SMB_COM_TRANSACTION2) |
e4eb295d SF |
222 | return 0; |
223 | ||
fb8c4b14 SF |
224 | /* check for plausible wct, bcc and t2 data and parm sizes */ |
225 | /* check for parm and data offset going beyond end of smb */ | |
226 | if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
467a8f8d | 227 | cFYI(1, ("invalid transact2 word count")); |
e4eb295d SF |
228 | return -EINVAL; |
229 | } | |
230 | ||
231 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
232 | ||
233 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
234 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
235 | ||
236 | remaining = total_data_size - data_in_this_rsp; | |
237 | ||
fb8c4b14 | 238 | if (remaining == 0) |
e4eb295d | 239 | return 0; |
fb8c4b14 | 240 | else if (remaining < 0) { |
467a8f8d | 241 | cFYI(1, ("total data %d smaller than data in frame %d", |
e4eb295d SF |
242 | total_data_size, data_in_this_rsp)); |
243 | return -EINVAL; | |
244 | } else { | |
467a8f8d | 245 | cFYI(1, ("missing %d bytes from transact2, check next response", |
e4eb295d | 246 | remaining)); |
fb8c4b14 SF |
247 | if (total_data_size > maxBufSize) { |
248 | cERROR(1, ("TotalDataSize %d is over maximum buffer %d", | |
249 | total_data_size, maxBufSize)); | |
250 | return -EINVAL; | |
e4eb295d SF |
251 | } |
252 | return remaining; | |
253 | } | |
254 | } | |
255 | ||
fb8c4b14 | 256 | static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) |
e4eb295d SF |
257 | { |
258 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
259 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
260 | int total_data_size; | |
261 | int total_in_buf; | |
262 | int remaining; | |
263 | int total_in_buf2; | |
fb8c4b14 SF |
264 | char *data_area_of_target; |
265 | char *data_area_of_buf2; | |
e4eb295d SF |
266 | __u16 byte_count; |
267 | ||
268 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
269 | ||
fb8c4b14 | 270 | if (total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { |
63135e08 | 271 | cFYI(1, ("total data size of primary and secondary t2 differ")); |
e4eb295d SF |
272 | } |
273 | ||
274 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
275 | ||
276 | remaining = total_data_size - total_in_buf; | |
50c2f753 | 277 | |
fb8c4b14 | 278 | if (remaining < 0) |
e4eb295d SF |
279 | return -EINVAL; |
280 | ||
fb8c4b14 | 281 | if (remaining == 0) /* nothing to do, ignore */ |
e4eb295d | 282 | return 0; |
50c2f753 | 283 | |
e4eb295d | 284 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); |
fb8c4b14 | 285 | if (remaining < total_in_buf2) { |
467a8f8d | 286 | cFYI(1, ("transact2 2nd response contains too much data")); |
e4eb295d SF |
287 | } |
288 | ||
289 | /* find end of first SMB data area */ | |
fb8c4b14 | 290 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + |
e4eb295d SF |
291 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); |
292 | /* validate target area */ | |
293 | ||
294 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
fb8c4b14 | 295 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); |
e4eb295d SF |
296 | |
297 | data_area_of_target += total_in_buf; | |
298 | ||
299 | /* copy second buffer into end of first buffer */ | |
fb8c4b14 | 300 | memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); |
e4eb295d SF |
301 | total_in_buf += total_in_buf2; |
302 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
303 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
304 | byte_count += total_in_buf2; | |
305 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
306 | ||
70ca734a | 307 | byte_count = pTargetSMB->smb_buf_length; |
e4eb295d SF |
308 | byte_count += total_in_buf2; |
309 | ||
310 | /* BB also add check that we are not beyond maximum buffer size */ | |
50c2f753 | 311 | |
70ca734a | 312 | pTargetSMB->smb_buf_length = byte_count; |
e4eb295d | 313 | |
fb8c4b14 | 314 | if (remaining == total_in_buf2) { |
467a8f8d | 315 | cFYI(1, ("found the last secondary response")); |
e4eb295d SF |
316 | return 0; /* we are done */ |
317 | } else /* more responses to go */ | |
318 | return 1; | |
319 | ||
320 | } | |
321 | ||
1da177e4 LT |
322 | static int |
323 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
324 | { | |
325 | int length; | |
326 | unsigned int pdu_length, total_read; | |
327 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
328 | struct smb_hdr *bigbuf = NULL; |
329 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
330 | struct msghdr smb_msg; |
331 | struct kvec iov; | |
332 | struct socket *csocket = server->ssocket; | |
333 | struct list_head *tmp; | |
334 | struct cifsSesInfo *ses; | |
335 | struct task_struct *task_to_wake = NULL; | |
336 | struct mid_q_entry *mid_entry; | |
70ca734a | 337 | char temp; |
4b18f2a9 SF |
338 | bool isLargeBuf = false; |
339 | bool isMultiRsp; | |
e4eb295d | 340 | int reconnect; |
1da177e4 | 341 | |
1da177e4 | 342 | current->flags |= PF_MEMALLOC; |
ba25f9dc | 343 | cFYI(1, ("Demultiplex PID: %d", task_pid_nr(current))); |
93d0ec85 JL |
344 | |
345 | length = atomic_inc_return(&tcpSesAllocCount); | |
346 | if (length > 1) | |
26f57364 SF |
347 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, |
348 | GFP_KERNEL); | |
1da177e4 | 349 | |
83144186 | 350 | set_freezable(); |
469ee614 | 351 | while (server->tcpStatus != CifsExiting) { |
ede1327e SF |
352 | if (try_to_freeze()) |
353 | continue; | |
b8643e1b SF |
354 | if (bigbuf == NULL) { |
355 | bigbuf = cifs_buf_get(); | |
0fd1ffe0 PM |
356 | if (!bigbuf) { |
357 | cERROR(1, ("No memory for large SMB response")); | |
b8643e1b SF |
358 | msleep(3000); |
359 | /* retry will check if exiting */ | |
360 | continue; | |
361 | } | |
0fd1ffe0 PM |
362 | } else if (isLargeBuf) { |
363 | /* we are reusing a dirty large buf, clear its start */ | |
26f57364 | 364 | memset(bigbuf, 0, sizeof(struct smb_hdr)); |
1da177e4 | 365 | } |
b8643e1b SF |
366 | |
367 | if (smallbuf == NULL) { | |
368 | smallbuf = cifs_small_buf_get(); | |
0fd1ffe0 PM |
369 | if (!smallbuf) { |
370 | cERROR(1, ("No memory for SMB response")); | |
b8643e1b SF |
371 | msleep(1000); |
372 | /* retry will check if exiting */ | |
373 | continue; | |
374 | } | |
375 | /* beginning of smb buffer is cleared in our buf_get */ | |
376 | } else /* if existing small buf clear beginning */ | |
26f57364 | 377 | memset(smallbuf, 0, sizeof(struct smb_hdr)); |
b8643e1b | 378 | |
4b18f2a9 SF |
379 | isLargeBuf = false; |
380 | isMultiRsp = false; | |
b8643e1b | 381 | smb_buffer = smallbuf; |
1da177e4 LT |
382 | iov.iov_base = smb_buffer; |
383 | iov.iov_len = 4; | |
384 | smb_msg.msg_control = NULL; | |
385 | smb_msg.msg_controllen = 0; | |
f01d5e14 SF |
386 | pdu_length = 4; /* enough to get RFC1001 header */ |
387 | incomplete_rcv: | |
1da177e4 LT |
388 | length = |
389 | kernel_recvmsg(csocket, &smb_msg, | |
f01d5e14 | 390 | &iov, 1, pdu_length, 0 /* BB other flags? */); |
1da177e4 | 391 | |
469ee614 | 392 | if (server->tcpStatus == CifsExiting) { |
1da177e4 LT |
393 | break; |
394 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
0fd1ffe0 | 395 | cFYI(1, ("Reconnect after server stopped responding")); |
1da177e4 | 396 | cifs_reconnect(server); |
0fd1ffe0 | 397 | cFYI(1, ("call to reconnect done")); |
1da177e4 LT |
398 | csocket = server->ssocket; |
399 | continue; | |
400 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 401 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
402 | allowing socket to clear and app threads to set |
403 | tcpStatus CifsNeedReconnect if server hung */ | |
c527c8a7 SF |
404 | if (pdu_length < 4) { |
405 | iov.iov_base = (4 - pdu_length) + | |
406 | (char *)smb_buffer; | |
407 | iov.iov_len = pdu_length; | |
408 | smb_msg.msg_control = NULL; | |
409 | smb_msg.msg_controllen = 0; | |
c18c732e | 410 | goto incomplete_rcv; |
c527c8a7 | 411 | } else |
c18c732e | 412 | continue; |
1da177e4 | 413 | } else if (length <= 0) { |
0fd1ffe0 PM |
414 | if (server->tcpStatus == CifsNew) { |
415 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
416 | /* some servers kill the TCP session rather than |
417 | returning an SMB negprot error, in which | |
418 | case reconnecting here is not going to help, | |
419 | and so simply return error to mount */ | |
1da177e4 LT |
420 | break; |
421 | } | |
0fd1ffe0 | 422 | if (!try_to_freeze() && (length == -EINTR)) { |
467a8f8d | 423 | cFYI(1, ("cifsd thread killed")); |
1da177e4 LT |
424 | break; |
425 | } | |
467a8f8d | 426 | cFYI(1, ("Reconnect after unexpected peek error %d", |
57337e42 | 427 | length)); |
1da177e4 LT |
428 | cifs_reconnect(server); |
429 | csocket = server->ssocket; | |
430 | wake_up(&server->response_q); | |
431 | continue; | |
2a974680 PT |
432 | } else if (length < pdu_length) { |
433 | cFYI(1, ("requested %d bytes but only got %d bytes", | |
434 | pdu_length, length)); | |
f01d5e14 | 435 | pdu_length -= length; |
f01d5e14 SF |
436 | msleep(1); |
437 | goto incomplete_rcv; | |
46810cbf | 438 | } |
1da177e4 | 439 | |
70ca734a SF |
440 | /* The right amount was read from socket - 4 bytes */ |
441 | /* so we can now interpret the length field */ | |
46810cbf | 442 | |
70ca734a SF |
443 | /* the first byte big endian of the length field, |
444 | is actually not part of the length but the type | |
445 | with the most common, zero, as regular data */ | |
446 | temp = *((char *) smb_buffer); | |
46810cbf | 447 | |
fb8c4b14 | 448 | /* Note that FC 1001 length is big endian on the wire, |
70ca734a SF |
449 | but we convert it here so it is always manipulated |
450 | as host byte order */ | |
5ca33c6a | 451 | pdu_length = be32_to_cpu((__force __be32)smb_buffer->smb_buf_length); |
70ca734a SF |
452 | smb_buffer->smb_buf_length = pdu_length; |
453 | ||
467a8f8d | 454 | cFYI(1, ("rfc1002 length 0x%x", pdu_length+4)); |
46810cbf | 455 | |
70ca734a | 456 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
fb8c4b14 | 457 | continue; |
70ca734a | 458 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
467a8f8d | 459 | cFYI(1, ("Good RFC 1002 session rsp")); |
e4eb295d | 460 | continue; |
70ca734a | 461 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
fb8c4b14 | 462 | /* we get this from Windows 98 instead of |
46810cbf | 463 | an error on SMB negprot response */ |
fb8c4b14 | 464 | cFYI(1, ("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 465 | pdu_length)); |
fb8c4b14 SF |
466 | if (server->tcpStatus == CifsNew) { |
467 | /* if nack on negprot (rather than | |
46810cbf SF |
468 | ret of smb negprot error) reconnecting |
469 | not going to help, ret error to mount */ | |
470 | break; | |
471 | } else { | |
472 | /* give server a second to | |
473 | clean up before reconnect attempt */ | |
474 | msleep(1000); | |
475 | /* always try 445 first on reconnect | |
476 | since we get NACK on some if we ever | |
fb8c4b14 | 477 | connected to port 139 (the NACK is |
46810cbf SF |
478 | since we do not begin with RFC1001 |
479 | session initialize frame) */ | |
fb8c4b14 | 480 | server->addr.sockAddr.sin_port = |
46810cbf | 481 | htons(CIFS_PORT); |
1da177e4 LT |
482 | cifs_reconnect(server); |
483 | csocket = server->ssocket; | |
46810cbf | 484 | wake_up(&server->response_q); |
1da177e4 | 485 | continue; |
46810cbf | 486 | } |
70ca734a | 487 | } else if (temp != (char) 0) { |
fb8c4b14 | 488 | cERROR(1, ("Unknown RFC 1002 frame")); |
70ca734a SF |
489 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
490 | length); | |
46810cbf SF |
491 | cifs_reconnect(server); |
492 | csocket = server->ssocket; | |
493 | continue; | |
e4eb295d SF |
494 | } |
495 | ||
496 | /* else we have an SMB response */ | |
fb8c4b14 | 497 | if ((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || |
26f57364 | 498 | (pdu_length < sizeof(struct smb_hdr) - 1 - 4)) { |
e4eb295d | 499 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 500 | length, pdu_length+4)); |
e4eb295d SF |
501 | cifs_reconnect(server); |
502 | csocket = server->ssocket; | |
503 | wake_up(&server->response_q); | |
504 | continue; | |
fb8c4b14 | 505 | } |
e4eb295d SF |
506 | |
507 | /* else length ok */ | |
508 | reconnect = 0; | |
509 | ||
fb8c4b14 | 510 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
4b18f2a9 | 511 | isLargeBuf = true; |
e4eb295d SF |
512 | memcpy(bigbuf, smallbuf, 4); |
513 | smb_buffer = bigbuf; | |
514 | } | |
515 | length = 0; | |
516 | iov.iov_base = 4 + (char *)smb_buffer; | |
517 | iov.iov_len = pdu_length; | |
fb8c4b14 | 518 | for (total_read = 0; total_read < pdu_length; |
e4eb295d SF |
519 | total_read += length) { |
520 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
521 | pdu_length - total_read, 0); | |
469ee614 | 522 | if ((server->tcpStatus == CifsExiting) || |
e4eb295d SF |
523 | (length == -EINTR)) { |
524 | /* then will exit */ | |
525 | reconnect = 2; | |
526 | break; | |
527 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
528 | cifs_reconnect(server); |
529 | csocket = server->ssocket; | |
fb8c4b14 | 530 | /* Reconnect wakes up rspns q */ |
e4eb295d SF |
531 | /* Now we will reread sock */ |
532 | reconnect = 1; | |
533 | break; | |
fb8c4b14 | 534 | } else if ((length == -ERESTARTSYS) || |
e4eb295d SF |
535 | (length == -EAGAIN)) { |
536 | msleep(1); /* minimum sleep to prevent looping, | |
fb8c4b14 | 537 | allowing socket to clear and app |
e4eb295d SF |
538 | threads to set tcpStatus |
539 | CifsNeedReconnect if server hung*/ | |
c18c732e | 540 | length = 0; |
46810cbf | 541 | continue; |
e4eb295d | 542 | } else if (length <= 0) { |
fb8c4b14 | 543 | cERROR(1, ("Received no data, expecting %d", |
e4eb295d SF |
544 | pdu_length - total_read)); |
545 | cifs_reconnect(server); | |
546 | csocket = server->ssocket; | |
547 | reconnect = 1; | |
548 | break; | |
46810cbf | 549 | } |
e4eb295d | 550 | } |
fb8c4b14 | 551 | if (reconnect == 2) |
e4eb295d | 552 | break; |
fb8c4b14 | 553 | else if (reconnect == 1) |
e4eb295d | 554 | continue; |
1da177e4 | 555 | |
e4eb295d | 556 | length += 4; /* account for rfc1002 hdr */ |
50c2f753 | 557 | |
09d1db5c | 558 | |
e4eb295d | 559 | dump_smb(smb_buffer, length); |
184ed211 | 560 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 561 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
562 | continue; |
563 | } | |
1da177e4 | 564 | |
e4eb295d SF |
565 | |
566 | task_to_wake = NULL; | |
567 | spin_lock(&GlobalMid_Lock); | |
568 | list_for_each(tmp, &server->pending_mid_q) { | |
569 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
570 | ||
50c2f753 | 571 | if ((mid_entry->mid == smb_buffer->Mid) && |
e4eb295d SF |
572 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && |
573 | (mid_entry->command == smb_buffer->Command)) { | |
fb8c4b14 | 574 | if (check2ndT2(smb_buffer,server->maxBuf) > 0) { |
e4eb295d | 575 | /* We have a multipart transact2 resp */ |
4b18f2a9 | 576 | isMultiRsp = true; |
fb8c4b14 | 577 | if (mid_entry->resp_buf) { |
e4eb295d | 578 | /* merge response - fix up 1st*/ |
50c2f753 | 579 | if (coalesce_t2(smb_buffer, |
e4eb295d | 580 | mid_entry->resp_buf)) { |
4b18f2a9 SF |
581 | mid_entry->multiRsp = |
582 | true; | |
e4eb295d SF |
583 | break; |
584 | } else { | |
585 | /* all parts received */ | |
4b18f2a9 SF |
586 | mid_entry->multiEnd = |
587 | true; | |
50c2f753 | 588 | goto multi_t2_fnd; |
e4eb295d SF |
589 | } |
590 | } else { | |
fb8c4b14 | 591 | if (!isLargeBuf) { |
e4eb295d SF |
592 | cERROR(1,("1st trans2 resp needs bigbuf")); |
593 | /* BB maybe we can fix this up, switch | |
50c2f753 | 594 | to already allocated large buffer? */ |
e4eb295d | 595 | } else { |
cd63499c | 596 | /* Have first buffer */ |
e4eb295d SF |
597 | mid_entry->resp_buf = |
598 | smb_buffer; | |
4b18f2a9 SF |
599 | mid_entry->largeBuf = |
600 | true; | |
e4eb295d SF |
601 | bigbuf = NULL; |
602 | } | |
603 | } | |
604 | break; | |
50c2f753 | 605 | } |
e4eb295d | 606 | mid_entry->resp_buf = smb_buffer; |
4b18f2a9 | 607 | mid_entry->largeBuf = isLargeBuf; |
e4eb295d SF |
608 | multi_t2_fnd: |
609 | task_to_wake = mid_entry->tsk; | |
610 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
611 | #ifdef CONFIG_CIFS_STATS2 |
612 | mid_entry->when_received = jiffies; | |
613 | #endif | |
3a5ff61c SF |
614 | /* so we do not time out requests to server |
615 | which is still responding (since server could | |
616 | be busy but not dead) */ | |
617 | server->lstrp = jiffies; | |
e4eb295d | 618 | break; |
46810cbf | 619 | } |
1da177e4 | 620 | } |
e4eb295d SF |
621 | spin_unlock(&GlobalMid_Lock); |
622 | if (task_to_wake) { | |
cd63499c | 623 | /* Was previous buf put in mpx struct for multi-rsp? */ |
fb8c4b14 | 624 | if (!isMultiRsp) { |
cd63499c | 625 | /* smb buffer will be freed by user thread */ |
26f57364 | 626 | if (isLargeBuf) |
cd63499c | 627 | bigbuf = NULL; |
26f57364 | 628 | else |
cd63499c SF |
629 | smallbuf = NULL; |
630 | } | |
e4eb295d | 631 | wake_up_process(task_to_wake); |
4b18f2a9 SF |
632 | } else if (!is_valid_oplock_break(smb_buffer, server) && |
633 | !isMultiRsp) { | |
50c2f753 SF |
634 | cERROR(1, ("No task to wake, unknown frame received! " |
635 | "NumMids %d", midCount.counter)); | |
636 | cifs_dump_mem("Received Data is: ", (char *)smb_buffer, | |
70ca734a | 637 | sizeof(struct smb_hdr)); |
3979877e SF |
638 | #ifdef CONFIG_CIFS_DEBUG2 |
639 | cifs_dump_detail(smb_buffer); | |
640 | cifs_dump_mids(server); | |
641 | #endif /* CIFS_DEBUG2 */ | |
50c2f753 | 642 | |
e4eb295d SF |
643 | } |
644 | } /* end while !EXITING */ | |
645 | ||
e7ddee90 JL |
646 | /* take it off the list, if it's not already */ |
647 | write_lock(&cifs_tcp_ses_lock); | |
648 | list_del_init(&server->tcp_ses_list); | |
649 | write_unlock(&cifs_tcp_ses_lock); | |
650 | ||
1da177e4 LT |
651 | spin_lock(&GlobalMid_Lock); |
652 | server->tcpStatus = CifsExiting; | |
e691b9d1 | 653 | spin_unlock(&GlobalMid_Lock); |
dbdbb876 | 654 | wake_up_all(&server->response_q); |
e691b9d1 | 655 | |
31ca3bc3 SF |
656 | /* check if we have blocked requests that need to free */ |
657 | /* Note that cifs_max_pending is normally 50, but | |
658 | can be set at module install time to as little as two */ | |
e691b9d1 | 659 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 | 660 | if (atomic_read(&server->inFlight) >= cifs_max_pending) |
31ca3bc3 SF |
661 | atomic_set(&server->inFlight, cifs_max_pending - 1); |
662 | /* We do not want to set the max_pending too low or we | |
663 | could end up with the counter going negative */ | |
1da177e4 | 664 | spin_unlock(&GlobalMid_Lock); |
50c2f753 | 665 | /* Although there should not be any requests blocked on |
1da177e4 | 666 | this queue it can not hurt to be paranoid and try to wake up requests |
09d1db5c | 667 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
668 | to the same server - they now will see the session is in exit state |
669 | and get out of SendReceive. */ | |
670 | wake_up_all(&server->request_q); | |
671 | /* give those requests time to exit */ | |
b8643e1b | 672 | msleep(125); |
50c2f753 | 673 | |
fb8c4b14 | 674 | if (server->ssocket) { |
1da177e4 LT |
675 | sock_release(csocket); |
676 | server->ssocket = NULL; | |
677 | } | |
b8643e1b | 678 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
a8a11d39 MK |
679 | cifs_buf_release(bigbuf); |
680 | if (smallbuf) /* no sense logging a debug message if NULL */ | |
b8643e1b | 681 | cifs_small_buf_release(smallbuf); |
1da177e4 | 682 | |
14fbf50d JL |
683 | /* |
684 | * BB: we shouldn't have to do any of this. It shouldn't be | |
685 | * possible to exit from the thread with active SMB sessions | |
686 | */ | |
687 | read_lock(&cifs_tcp_ses_lock); | |
1da177e4 | 688 | if (list_empty(&server->pending_mid_q)) { |
09d1db5c SF |
689 | /* loop through server session structures attached to this and |
690 | mark them dead */ | |
14fbf50d JL |
691 | list_for_each(tmp, &server->smb_ses_list) { |
692 | ses = list_entry(tmp, struct cifsSesInfo, | |
693 | smb_ses_list); | |
694 | ses->status = CifsExiting; | |
695 | ses->server = NULL; | |
1da177e4 | 696 | } |
14fbf50d | 697 | read_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 698 | } else { |
31ca3bc3 SF |
699 | /* although we can not zero the server struct pointer yet, |
700 | since there are active requests which may depnd on them, | |
701 | mark the corresponding SMB sessions as exiting too */ | |
14fbf50d | 702 | list_for_each(tmp, &server->smb_ses_list) { |
31ca3bc3 | 703 | ses = list_entry(tmp, struct cifsSesInfo, |
14fbf50d JL |
704 | smb_ses_list); |
705 | ses->status = CifsExiting; | |
31ca3bc3 SF |
706 | } |
707 | ||
1da177e4 LT |
708 | spin_lock(&GlobalMid_Lock); |
709 | list_for_each(tmp, &server->pending_mid_q) { | |
710 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
711 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
50c2f753 SF |
712 | cFYI(1, ("Clearing Mid 0x%x - waking up ", |
713 | mid_entry->mid)); | |
1da177e4 | 714 | task_to_wake = mid_entry->tsk; |
26f57364 | 715 | if (task_to_wake) |
1da177e4 | 716 | wake_up_process(task_to_wake); |
1da177e4 LT |
717 | } |
718 | } | |
719 | spin_unlock(&GlobalMid_Lock); | |
14fbf50d | 720 | read_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 721 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 722 | msleep(125); |
1da177e4 LT |
723 | } |
724 | ||
f191401f | 725 | if (!list_empty(&server->pending_mid_q)) { |
50c2f753 | 726 | /* mpx threads have not exited yet give them |
1da177e4 | 727 | at least the smb send timeout time for long ops */ |
31ca3bc3 SF |
728 | /* due to delays on oplock break requests, we need |
729 | to wait at least 45 seconds before giving up | |
730 | on a request getting a response and going ahead | |
731 | and killing cifsd */ | |
1da177e4 | 732 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 733 | msleep(46000); |
1da177e4 LT |
734 | /* if threads still have not exited they are probably never |
735 | coming home not much else we can do but free the memory */ | |
736 | } | |
1da177e4 | 737 | |
31ca3bc3 SF |
738 | /* last chance to mark ses pointers invalid |
739 | if there are any pointing to this (e.g | |
50c2f753 | 740 | if a crazy root user tried to kill cifsd |
31ca3bc3 | 741 | kernel thread explicitly this might happen) */ |
14fbf50d JL |
742 | /* BB: This shouldn't be necessary, see above */ |
743 | read_lock(&cifs_tcp_ses_lock); | |
744 | list_for_each(tmp, &server->smb_ses_list) { | |
745 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); | |
746 | ses->server = NULL; | |
31ca3bc3 | 747 | } |
14fbf50d | 748 | read_unlock(&cifs_tcp_ses_lock); |
31ca3bc3 | 749 | |
c359cf3c | 750 | kfree(server->hostname); |
b1c8d2b4 | 751 | task_to_wake = xchg(&server->tsk, NULL); |
31ca3bc3 | 752 | kfree(server); |
93d0ec85 JL |
753 | |
754 | length = atomic_dec_return(&tcpSesAllocCount); | |
26f57364 SF |
755 | if (length > 0) |
756 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, | |
757 | GFP_KERNEL); | |
50c2f753 | 758 | |
b1c8d2b4 JL |
759 | /* if server->tsk was NULL then wait for a signal before exiting */ |
760 | if (!task_to_wake) { | |
761 | set_current_state(TASK_INTERRUPTIBLE); | |
762 | while (!signal_pending(current)) { | |
763 | schedule(); | |
764 | set_current_state(TASK_INTERRUPTIBLE); | |
765 | } | |
766 | set_current_state(TASK_RUNNING); | |
767 | } | |
768 | ||
0468a2cf | 769 | module_put_and_exit(0); |
1da177e4 LT |
770 | } |
771 | ||
c359cf3c JL |
772 | /* extract the host portion of the UNC string */ |
773 | static char * | |
774 | extract_hostname(const char *unc) | |
775 | { | |
776 | const char *src; | |
777 | char *dst, *delim; | |
778 | unsigned int len; | |
779 | ||
780 | /* skip double chars at beginning of string */ | |
781 | /* BB: check validity of these bytes? */ | |
782 | src = unc + 2; | |
783 | ||
784 | /* delimiter between hostname and sharename is always '\\' now */ | |
785 | delim = strchr(src, '\\'); | |
786 | if (!delim) | |
787 | return ERR_PTR(-EINVAL); | |
788 | ||
789 | len = delim - src; | |
790 | dst = kmalloc((len + 1), GFP_KERNEL); | |
791 | if (dst == NULL) | |
792 | return ERR_PTR(-ENOMEM); | |
793 | ||
794 | memcpy(dst, src, len); | |
795 | dst[len] = '\0'; | |
796 | ||
797 | return dst; | |
798 | } | |
799 | ||
1da177e4 | 800 | static int |
50c2f753 SF |
801 | cifs_parse_mount_options(char *options, const char *devname, |
802 | struct smb_vol *vol) | |
1da177e4 LT |
803 | { |
804 | char *value; | |
805 | char *data; | |
806 | unsigned int temp_len, i, j; | |
807 | char separator[2]; | |
808 | ||
809 | separator[0] = ','; | |
50c2f753 | 810 | separator[1] = 0; |
1da177e4 | 811 | |
12e36b2f | 812 | if (Local_System_Name[0] != 0) |
50c2f753 | 813 | memcpy(vol->source_rfc1001_name, Local_System_Name, 15); |
2cd646a2 | 814 | else { |
12e36b2f | 815 | char *nodename = utsname()->nodename; |
50c2f753 SF |
816 | int n = strnlen(nodename, 15); |
817 | memset(vol->source_rfc1001_name, 0x20, 15); | |
818 | for (i = 0; i < n; i++) { | |
2cd646a2 SF |
819 | /* does not have to be perfect mapping since field is |
820 | informational, only used for servers that do not support | |
821 | port 445 and it can be overridden at mount time */ | |
12e36b2f | 822 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
2cd646a2 | 823 | } |
1da177e4 LT |
824 | } |
825 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
826 | /* null target name indicates to use *SMBSERVR default called name |
827 | if we end up sending RFC1001 session initialize */ | |
828 | vol->target_rfc1001_name[0] = 0; | |
1da177e4 LT |
829 | vol->linux_uid = current->uid; /* current->euid instead? */ |
830 | vol->linux_gid = current->gid; | |
831 | vol->dir_mode = S_IRWXUGO; | |
832 | /* 2767 perms indicate mandatory locking support */ | |
7505e052 | 833 | vol->file_mode = (S_IRWXUGO | S_ISGID) & (~S_IXGRP); |
1da177e4 LT |
834 | |
835 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
4b18f2a9 | 836 | vol->rw = true; |
ac67055e JA |
837 | /* default is always to request posix paths. */ |
838 | vol->posix_paths = 1; | |
839 | ||
1da177e4 LT |
840 | if (!options) |
841 | return 1; | |
842 | ||
50c2f753 | 843 | if (strncmp(options, "sep=", 4) == 0) { |
fb8c4b14 | 844 | if (options[4] != 0) { |
1da177e4 LT |
845 | separator[0] = options[4]; |
846 | options += 5; | |
847 | } else { | |
467a8f8d | 848 | cFYI(1, ("Null separator not allowed")); |
1da177e4 LT |
849 | } |
850 | } | |
50c2f753 | 851 | |
1da177e4 LT |
852 | while ((data = strsep(&options, separator)) != NULL) { |
853 | if (!*data) | |
854 | continue; | |
855 | if ((value = strchr(data, '=')) != NULL) | |
856 | *value++ = '\0'; | |
857 | ||
50c2f753 SF |
858 | /* Have to parse this before we parse for "user" */ |
859 | if (strnicmp(data, "user_xattr", 10) == 0) { | |
1da177e4 | 860 | vol->no_xattr = 0; |
50c2f753 | 861 | } else if (strnicmp(data, "nouser_xattr", 12) == 0) { |
1da177e4 LT |
862 | vol->no_xattr = 1; |
863 | } else if (strnicmp(data, "user", 4) == 0) { | |
4b952a9b | 864 | if (!value) { |
1da177e4 LT |
865 | printk(KERN_WARNING |
866 | "CIFS: invalid or missing username\n"); | |
867 | return 1; /* needs_arg; */ | |
fb8c4b14 | 868 | } else if (!*value) { |
4b952a9b SF |
869 | /* null user, ie anonymous, authentication */ |
870 | vol->nullauth = 1; | |
1da177e4 LT |
871 | } |
872 | if (strnlen(value, 200) < 200) { | |
873 | vol->username = value; | |
874 | } else { | |
875 | printk(KERN_WARNING "CIFS: username too long\n"); | |
876 | return 1; | |
877 | } | |
878 | } else if (strnicmp(data, "pass", 4) == 0) { | |
879 | if (!value) { | |
880 | vol->password = NULL; | |
881 | continue; | |
fb8c4b14 | 882 | } else if (value[0] == 0) { |
1da177e4 LT |
883 | /* check if string begins with double comma |
884 | since that would mean the password really | |
885 | does start with a comma, and would not | |
886 | indicate an empty string */ | |
fb8c4b14 | 887 | if (value[1] != separator[0]) { |
1da177e4 LT |
888 | vol->password = NULL; |
889 | continue; | |
890 | } | |
891 | } | |
892 | temp_len = strlen(value); | |
893 | /* removed password length check, NTLM passwords | |
894 | can be arbitrarily long */ | |
895 | ||
50c2f753 | 896 | /* if comma in password, the string will be |
1da177e4 LT |
897 | prematurely null terminated. Commas in password are |
898 | specified across the cifs mount interface by a double | |
899 | comma ie ,, and a comma used as in other cases ie ',' | |
900 | as a parameter delimiter/separator is single and due | |
901 | to the strsep above is temporarily zeroed. */ | |
902 | ||
903 | /* NB: password legally can have multiple commas and | |
904 | the only illegal character in a password is null */ | |
905 | ||
50c2f753 | 906 | if ((value[temp_len] == 0) && |
09d1db5c | 907 | (value[temp_len+1] == separator[0])) { |
1da177e4 LT |
908 | /* reinsert comma */ |
909 | value[temp_len] = separator[0]; | |
50c2f753 SF |
910 | temp_len += 2; /* move after second comma */ |
911 | while (value[temp_len] != 0) { | |
1da177e4 | 912 | if (value[temp_len] == separator[0]) { |
50c2f753 | 913 | if (value[temp_len+1] == |
09d1db5c SF |
914 | separator[0]) { |
915 | /* skip second comma */ | |
916 | temp_len++; | |
50c2f753 | 917 | } else { |
1da177e4 LT |
918 | /* single comma indicating start |
919 | of next parm */ | |
920 | break; | |
921 | } | |
922 | } | |
923 | temp_len++; | |
924 | } | |
fb8c4b14 | 925 | if (value[temp_len] == 0) { |
1da177e4 LT |
926 | options = NULL; |
927 | } else { | |
928 | value[temp_len] = 0; | |
929 | /* point option to start of next parm */ | |
930 | options = value + temp_len + 1; | |
931 | } | |
50c2f753 | 932 | /* go from value to value + temp_len condensing |
1da177e4 LT |
933 | double commas to singles. Note that this ends up |
934 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 935 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
fb8c4b14 | 936 | if (vol->password == NULL) { |
50c2f753 SF |
937 | printk(KERN_WARNING "CIFS: no memory " |
938 | "for password\n"); | |
433dc24f SF |
939 | return 1; |
940 | } | |
50c2f753 | 941 | for (i = 0, j = 0; i < temp_len; i++, j++) { |
1da177e4 | 942 | vol->password[j] = value[i]; |
fb8c4b14 | 943 | if (value[i] == separator[0] |
09d1db5c | 944 | && value[i+1] == separator[0]) { |
1da177e4 LT |
945 | /* skip second comma */ |
946 | i++; | |
947 | } | |
948 | } | |
949 | vol->password[j] = 0; | |
950 | } else { | |
e915fc49 | 951 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
fb8c4b14 | 952 | if (vol->password == NULL) { |
50c2f753 SF |
953 | printk(KERN_WARNING "CIFS: no memory " |
954 | "for password\n"); | |
433dc24f SF |
955 | return 1; |
956 | } | |
1da177e4 LT |
957 | strcpy(vol->password, value); |
958 | } | |
959 | } else if (strnicmp(data, "ip", 2) == 0) { | |
960 | if (!value || !*value) { | |
961 | vol->UNCip = NULL; | |
962 | } else if (strnlen(value, 35) < 35) { | |
963 | vol->UNCip = value; | |
964 | } else { | |
50c2f753 SF |
965 | printk(KERN_WARNING "CIFS: ip address " |
966 | "too long\n"); | |
1da177e4 LT |
967 | return 1; |
968 | } | |
50c2f753 SF |
969 | } else if (strnicmp(data, "sec", 3) == 0) { |
970 | if (!value || !*value) { | |
971 | cERROR(1, ("no security value specified")); | |
972 | continue; | |
973 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
974 | vol->secFlg |= CIFSSEC_MAY_KRB5 | | |
189acaae | 975 | CIFSSEC_MUST_SIGN; |
bf820679 | 976 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
50c2f753 SF |
977 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
978 | CIFSSEC_MAY_KRB5; */ | |
979 | cERROR(1, ("Krb5 cifs privacy not supported")); | |
bf820679 SF |
980 | return 1; |
981 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 982 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
bf820679 | 983 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 984 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 985 | CIFSSEC_MUST_SIGN; |
bf820679 | 986 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 987 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 988 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 989 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 990 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
991 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
992 | /* ntlm is default so can be turned off too */ | |
750d1151 | 993 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 994 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 995 | /* BB is there a better way to do this? */ |
750d1151 | 996 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
997 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
998 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
50c2f753 | 999 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 1000 | #endif |
bf820679 | 1001 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 1002 | vol->nullauth = 1; |
50c2f753 SF |
1003 | } else { |
1004 | cERROR(1, ("bad security option: %s", value)); | |
1005 | return 1; | |
1006 | } | |
1da177e4 LT |
1007 | } else if ((strnicmp(data, "unc", 3) == 0) |
1008 | || (strnicmp(data, "target", 6) == 0) | |
1009 | || (strnicmp(data, "path", 4) == 0)) { | |
1010 | if (!value || !*value) { | |
50c2f753 SF |
1011 | printk(KERN_WARNING "CIFS: invalid path to " |
1012 | "network resource\n"); | |
1da177e4 LT |
1013 | return 1; /* needs_arg; */ |
1014 | } | |
1015 | if ((temp_len = strnlen(value, 300)) < 300) { | |
50c2f753 | 1016 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1017 | if (vol->UNC == NULL) |
1da177e4 | 1018 | return 1; |
50c2f753 | 1019 | strcpy(vol->UNC, value); |
1da177e4 LT |
1020 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1021 | vol->UNC[0] = '\\'; | |
1022 | vol->UNC[1] = '\\'; | |
50c2f753 | 1023 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
1da177e4 | 1024 | printk(KERN_WARNING |
50c2f753 SF |
1025 | "CIFS: UNC Path does not begin " |
1026 | "with // or \\\\ \n"); | |
1da177e4 LT |
1027 | return 1; |
1028 | } | |
1029 | } else { | |
1030 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1031 | return 1; | |
1032 | } | |
1033 | } else if ((strnicmp(data, "domain", 3) == 0) | |
1034 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
1035 | if (!value || !*value) { | |
1036 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
1037 | return 1; /* needs_arg; */ | |
1038 | } | |
1039 | /* BB are there cases in which a comma can be valid in | |
1040 | a domain name and need special handling? */ | |
3979877e | 1041 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
1042 | vol->domainname = value; |
1043 | cFYI(1, ("Domain name set")); | |
1044 | } else { | |
50c2f753 SF |
1045 | printk(KERN_WARNING "CIFS: domain name too " |
1046 | "long\n"); | |
1da177e4 LT |
1047 | return 1; |
1048 | } | |
50c2f753 SF |
1049 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
1050 | if (!value || !*value) { | |
1051 | printk(KERN_WARNING | |
1052 | "CIFS: invalid path prefix\n"); | |
1053 | return 1; /* needs_argument */ | |
1054 | } | |
1055 | if ((temp_len = strnlen(value, 1024)) < 1024) { | |
4523cc30 | 1056 | if (value[0] != '/') |
2fe87f02 | 1057 | temp_len++; /* missing leading slash */ |
50c2f753 SF |
1058 | vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); |
1059 | if (vol->prepath == NULL) | |
1060 | return 1; | |
4523cc30 | 1061 | if (value[0] != '/') { |
2fe87f02 | 1062 | vol->prepath[0] = '/'; |
50c2f753 | 1063 | strcpy(vol->prepath+1, value); |
2fe87f02 | 1064 | } else |
50c2f753 SF |
1065 | strcpy(vol->prepath, value); |
1066 | cFYI(1, ("prefix path %s", vol->prepath)); | |
1067 | } else { | |
1068 | printk(KERN_WARNING "CIFS: prefix too long\n"); | |
1069 | return 1; | |
1070 | } | |
1da177e4 LT |
1071 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
1072 | if (!value || !*value) { | |
63135e08 SF |
1073 | printk(KERN_WARNING "CIFS: invalid iocharset " |
1074 | "specified\n"); | |
1da177e4 LT |
1075 | return 1; /* needs_arg; */ |
1076 | } | |
1077 | if (strnlen(value, 65) < 65) { | |
50c2f753 | 1078 | if (strnicmp(value, "default", 7)) |
1da177e4 | 1079 | vol->iocharset = value; |
50c2f753 SF |
1080 | /* if iocharset not set then load_nls_default |
1081 | is used by caller */ | |
1082 | cFYI(1, ("iocharset set to %s", value)); | |
1da177e4 | 1083 | } else { |
63135e08 SF |
1084 | printk(KERN_WARNING "CIFS: iocharset name " |
1085 | "too long.\n"); | |
1da177e4 LT |
1086 | return 1; |
1087 | } | |
1088 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1089 | if (value && *value) { | |
1090 | vol->linux_uid = | |
1091 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1092 | vol->override_uid = 1; |
1da177e4 LT |
1093 | } |
1094 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1095 | if (value && *value) { | |
1096 | vol->linux_gid = | |
1097 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1098 | vol->override_gid = 1; |
1da177e4 LT |
1099 | } |
1100 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1101 | if (value && *value) { | |
1102 | vol->file_mode = | |
1103 | simple_strtoul(value, &value, 0); | |
1104 | } | |
1105 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1106 | if (value && *value) { | |
1107 | vol->dir_mode = | |
1108 | simple_strtoul(value, &value, 0); | |
1109 | } | |
1110 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1111 | if (value && *value) { | |
1112 | vol->dir_mode = | |
1113 | simple_strtoul(value, &value, 0); | |
1114 | } | |
1115 | } else if (strnicmp(data, "port", 4) == 0) { | |
1116 | if (value && *value) { | |
1117 | vol->port = | |
1118 | simple_strtoul(value, &value, 0); | |
1119 | } | |
1120 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1121 | if (value && *value) { | |
1122 | vol->rsize = | |
1123 | simple_strtoul(value, &value, 0); | |
1124 | } | |
1125 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1126 | if (value && *value) { | |
1127 | vol->wsize = | |
1128 | simple_strtoul(value, &value, 0); | |
1129 | } | |
1130 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1131 | if (value && *value) { | |
1132 | vol->sockopt = | |
1133 | simple_strtoul(value, &value, 0); | |
1134 | } | |
1135 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1136 | if (!value || !*value || (*value == ' ')) { | |
63135e08 | 1137 | cFYI(1, ("invalid (empty) netbiosname")); |
1da177e4 | 1138 | } else { |
50c2f753 SF |
1139 | memset(vol->source_rfc1001_name, 0x20, 15); |
1140 | for (i = 0; i < 15; i++) { | |
1141 | /* BB are there cases in which a comma can be | |
1da177e4 LT |
1142 | valid in this workstation netbios name (and need |
1143 | special handling)? */ | |
1144 | ||
1145 | /* We do not uppercase netbiosname for user */ | |
50c2f753 | 1146 | if (value[i] == 0) |
1da177e4 | 1147 | break; |
50c2f753 SF |
1148 | else |
1149 | vol->source_rfc1001_name[i] = | |
1150 | value[i]; | |
1da177e4 LT |
1151 | } |
1152 | /* The string has 16th byte zero still from | |
1153 | set at top of the function */ | |
50c2f753 SF |
1154 | if ((i == 15) && (value[i] != 0)) |
1155 | printk(KERN_WARNING "CIFS: netbiosname" | |
1156 | " longer than 15 truncated.\n"); | |
a10faeb2 SF |
1157 | } |
1158 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1159 | /* servernetbiosname specified override *SMBSERVER */ | |
1160 | if (!value || !*value || (*value == ' ')) { | |
467a8f8d | 1161 | cFYI(1, ("empty server netbiosname specified")); |
a10faeb2 SF |
1162 | } else { |
1163 | /* last byte, type, is 0x20 for servr type */ | |
50c2f753 | 1164 | memset(vol->target_rfc1001_name, 0x20, 16); |
a10faeb2 | 1165 | |
50c2f753 | 1166 | for (i = 0; i < 15; i++) { |
a10faeb2 | 1167 | /* BB are there cases in which a comma can be |
50c2f753 SF |
1168 | valid in this workstation netbios name |
1169 | (and need special handling)? */ | |
a10faeb2 | 1170 | |
50c2f753 SF |
1171 | /* user or mount helper must uppercase |
1172 | the netbiosname */ | |
1173 | if (value[i] == 0) | |
a10faeb2 SF |
1174 | break; |
1175 | else | |
50c2f753 SF |
1176 | vol->target_rfc1001_name[i] = |
1177 | value[i]; | |
a10faeb2 SF |
1178 | } |
1179 | /* The string has 16th byte zero still from | |
1180 | set at top of the function */ | |
50c2f753 SF |
1181 | if ((i == 15) && (value[i] != 0)) |
1182 | printk(KERN_WARNING "CIFS: server net" | |
1183 | "biosname longer than 15 truncated.\n"); | |
1da177e4 LT |
1184 | } |
1185 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1186 | /* ignore */ | |
1187 | } else if (strnicmp(data, "version", 3) == 0) { | |
1188 | /* ignore */ | |
50c2f753 | 1189 | } else if (strnicmp(data, "guest", 5) == 0) { |
1da177e4 LT |
1190 | /* ignore */ |
1191 | } else if (strnicmp(data, "rw", 2) == 0) { | |
4b18f2a9 | 1192 | vol->rw = true; |
edf1ae40 SF |
1193 | } else if (strnicmp(data, "noblocksend", 11) == 0) { |
1194 | vol->noblocksnd = 1; | |
1195 | } else if (strnicmp(data, "noautotune", 10) == 0) { | |
1196 | vol->noautotune = 1; | |
1da177e4 LT |
1197 | } else if ((strnicmp(data, "suid", 4) == 0) || |
1198 | (strnicmp(data, "nosuid", 6) == 0) || | |
1199 | (strnicmp(data, "exec", 4) == 0) || | |
1200 | (strnicmp(data, "noexec", 6) == 0) || | |
1201 | (strnicmp(data, "nodev", 5) == 0) || | |
1202 | (strnicmp(data, "noauto", 6) == 0) || | |
1203 | (strnicmp(data, "dev", 3) == 0)) { | |
1204 | /* The mount tool or mount.cifs helper (if present) | |
50c2f753 SF |
1205 | uses these opts to set flags, and the flags are read |
1206 | by the kernel vfs layer before we get here (ie | |
1207 | before read super) so there is no point trying to | |
1208 | parse these options again and set anything and it | |
1209 | is ok to just ignore them */ | |
1da177e4 LT |
1210 | continue; |
1211 | } else if (strnicmp(data, "ro", 2) == 0) { | |
4b18f2a9 | 1212 | vol->rw = false; |
1da177e4 LT |
1213 | } else if (strnicmp(data, "hard", 4) == 0) { |
1214 | vol->retry = 1; | |
1215 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1216 | vol->retry = 0; | |
1217 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1218 | vol->noperm = 0; | |
1219 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1220 | vol->noperm = 1; | |
6a0b4824 SF |
1221 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1222 | vol->remap = 1; | |
1223 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1224 | vol->remap = 0; | |
50c2f753 SF |
1225 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1226 | vol->sfu_emul = 1; | |
1227 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1228 | vol->sfu_emul = 0; | |
2c1b8615 SF |
1229 | } else if (strnicmp(data, "nodfs", 5) == 0) { |
1230 | vol->nodfs = 1; | |
ac67055e JA |
1231 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1232 | vol->posix_paths = 1; | |
1233 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1234 | vol->posix_paths = 0; | |
c18c842b SF |
1235 | } else if (strnicmp(data, "nounix", 6) == 0) { |
1236 | vol->no_linux_ext = 1; | |
1237 | } else if (strnicmp(data, "nolinux", 7) == 0) { | |
1238 | vol->no_linux_ext = 1; | |
50c2f753 | 1239 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
a10faeb2 | 1240 | (strnicmp(data, "ignorecase", 10) == 0)) { |
50c2f753 | 1241 | vol->nocase = 1; |
c46fa8ac SF |
1242 | } else if (strnicmp(data, "brl", 3) == 0) { |
1243 | vol->nobrl = 0; | |
50c2f753 | 1244 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1245 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1246 | vol->nobrl = 1; |
d3485d37 SF |
1247 | /* turn off mandatory locking in mode |
1248 | if remote locking is turned off since the | |
1249 | local vfs will do advisory */ | |
50c2f753 SF |
1250 | if (vol->file_mode == |
1251 | (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
d3485d37 | 1252 | vol->file_mode = S_IALLUGO; |
1da177e4 LT |
1253 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1254 | vol->setuids = 1; | |
1255 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1256 | vol->setuids = 0; | |
d0a9c078 JL |
1257 | } else if (strnicmp(data, "dynperm", 7) == 0) { |
1258 | vol->dynperm = true; | |
1259 | } else if (strnicmp(data, "nodynperm", 9) == 0) { | |
1260 | vol->dynperm = false; | |
1da177e4 LT |
1261 | } else if (strnicmp(data, "nohard", 6) == 0) { |
1262 | vol->retry = 0; | |
1263 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1264 | vol->retry = 1; | |
1265 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1266 | vol->intr = 0; | |
1267 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1268 | vol->intr = 1; | |
50c2f753 | 1269 | } else if (strnicmp(data, "serverino", 7) == 0) { |
1da177e4 | 1270 | vol->server_ino = 1; |
50c2f753 | 1271 | } else if (strnicmp(data, "noserverino", 9) == 0) { |
1da177e4 | 1272 | vol->server_ino = 0; |
50c2f753 | 1273 | } else if (strnicmp(data, "cifsacl", 7) == 0) { |
0a4b92c0 SF |
1274 | vol->cifs_acl = 1; |
1275 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1276 | vol->cifs_acl = 0; | |
50c2f753 | 1277 | } else if (strnicmp(data, "acl", 3) == 0) { |
1da177e4 | 1278 | vol->no_psx_acl = 0; |
50c2f753 | 1279 | } else if (strnicmp(data, "noacl", 5) == 0) { |
1da177e4 | 1280 | vol->no_psx_acl = 1; |
84210e91 SF |
1281 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
1282 | } else if (strnicmp(data, "locallease", 6) == 0) { | |
1283 | vol->local_lease = 1; | |
1284 | #endif | |
50c2f753 | 1285 | } else if (strnicmp(data, "sign", 4) == 0) { |
750d1151 | 1286 | vol->secFlg |= CIFSSEC_MUST_SIGN; |
95b1cb90 SF |
1287 | } else if (strnicmp(data, "seal", 4) == 0) { |
1288 | /* we do not do the following in secFlags because seal | |
1289 | is a per tree connection (mount) not a per socket | |
1290 | or per-smb connection option in the protocol */ | |
1291 | /* vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
1292 | vol->seal = 1; | |
50c2f753 | 1293 | } else if (strnicmp(data, "direct", 6) == 0) { |
1da177e4 | 1294 | vol->direct_io = 1; |
50c2f753 | 1295 | } else if (strnicmp(data, "forcedirectio", 13) == 0) { |
1da177e4 | 1296 | vol->direct_io = 1; |
50c2f753 | 1297 | } else if (strnicmp(data, "in6_addr", 8) == 0) { |
1da177e4 LT |
1298 | if (!value || !*value) { |
1299 | vol->in6_addr = NULL; | |
1300 | } else if (strnlen(value, 49) == 48) { | |
1301 | vol->in6_addr = value; | |
1302 | } else { | |
50c2f753 SF |
1303 | printk(KERN_WARNING "CIFS: ip v6 address not " |
1304 | "48 characters long\n"); | |
1da177e4 LT |
1305 | return 1; |
1306 | } | |
1307 | } else if (strnicmp(data, "noac", 4) == 0) { | |
50c2f753 SF |
1308 | printk(KERN_WARNING "CIFS: Mount option noac not " |
1309 | "supported. Instead set " | |
1310 | "/proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1da177e4 | 1311 | } else |
50c2f753 SF |
1312 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n", |
1313 | data); | |
1da177e4 LT |
1314 | } |
1315 | if (vol->UNC == NULL) { | |
4523cc30 | 1316 | if (devname == NULL) { |
50c2f753 SF |
1317 | printk(KERN_WARNING "CIFS: Missing UNC name for mount " |
1318 | "target\n"); | |
1da177e4 LT |
1319 | return 1; |
1320 | } | |
1321 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
50c2f753 | 1322 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1323 | if (vol->UNC == NULL) |
1da177e4 | 1324 | return 1; |
50c2f753 | 1325 | strcpy(vol->UNC, devname); |
1da177e4 LT |
1326 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1327 | vol->UNC[0] = '\\'; | |
1328 | vol->UNC[1] = '\\'; | |
1329 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
50c2f753 SF |
1330 | printk(KERN_WARNING "CIFS: UNC Path does not " |
1331 | "begin with // or \\\\ \n"); | |
1da177e4 LT |
1332 | return 1; |
1333 | } | |
7c5e628f IM |
1334 | value = strpbrk(vol->UNC+2, "/\\"); |
1335 | if (value) | |
1336 | *value = '\\'; | |
1da177e4 LT |
1337 | } else { |
1338 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1339 | return 1; | |
1340 | } | |
1341 | } | |
fb8c4b14 | 1342 | if (vol->UNCip == NULL) |
1da177e4 LT |
1343 | vol->UNCip = &vol->UNC[2]; |
1344 | ||
1345 | return 0; | |
1346 | } | |
1347 | ||
e7ddee90 JL |
1348 | static struct TCP_Server_Info * |
1349 | cifs_find_tcp_session(struct sockaddr *addr) | |
1da177e4 LT |
1350 | { |
1351 | struct list_head *tmp; | |
e7ddee90 JL |
1352 | struct TCP_Server_Info *server; |
1353 | struct sockaddr_in *addr4 = (struct sockaddr_in *) addr; | |
1354 | struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *) addr; | |
1355 | ||
1356 | write_lock(&cifs_tcp_ses_lock); | |
1357 | list_for_each(tmp, &cifs_tcp_ses_list) { | |
1358 | server = list_entry(tmp, struct TCP_Server_Info, | |
1359 | tcp_ses_list); | |
e7ddee90 JL |
1360 | /* |
1361 | * the demux thread can exit on its own while still in CifsNew | |
1362 | * so don't accept any sockets in that state. Since the | |
1363 | * tcpStatus never changes back to CifsNew it's safe to check | |
1364 | * for this without a lock. | |
1365 | */ | |
1366 | if (server->tcpStatus == CifsNew) | |
1b20d672 CG |
1367 | continue; |
1368 | ||
e7ddee90 JL |
1369 | if (addr->sa_family == AF_INET && |
1370 | (addr4->sin_addr.s_addr != | |
1371 | server->addr.sockAddr.sin_addr.s_addr)) | |
1372 | continue; | |
1373 | else if (addr->sa_family == AF_INET6 && | |
1374 | memcmp(&server->addr.sockAddr6.sin6_addr, | |
1375 | &addr6->sin6_addr, sizeof(addr6->sin6_addr))) | |
1376 | continue; | |
1b20d672 | 1377 | |
e7ddee90 JL |
1378 | ++server->srv_count; |
1379 | write_unlock(&cifs_tcp_ses_lock); | |
d82c2df5 | 1380 | cFYI(1, ("Existing tcp session with server found")); |
e7ddee90 | 1381 | return server; |
1da177e4 | 1382 | } |
e7ddee90 | 1383 | write_unlock(&cifs_tcp_ses_lock); |
1da177e4 LT |
1384 | return NULL; |
1385 | } | |
1386 | ||
14fbf50d | 1387 | static void |
e7ddee90 | 1388 | cifs_put_tcp_session(struct TCP_Server_Info *server) |
1da177e4 | 1389 | { |
e7ddee90 | 1390 | struct task_struct *task; |
dea570e0 | 1391 | |
e7ddee90 JL |
1392 | write_lock(&cifs_tcp_ses_lock); |
1393 | if (--server->srv_count > 0) { | |
1394 | write_unlock(&cifs_tcp_ses_lock); | |
1395 | return; | |
1396 | } | |
dea570e0 | 1397 | |
e7ddee90 JL |
1398 | list_del_init(&server->tcp_ses_list); |
1399 | write_unlock(&cifs_tcp_ses_lock); | |
dea570e0 | 1400 | |
e7ddee90 JL |
1401 | spin_lock(&GlobalMid_Lock); |
1402 | server->tcpStatus = CifsExiting; | |
1403 | spin_unlock(&GlobalMid_Lock); | |
dea570e0 | 1404 | |
e7ddee90 JL |
1405 | task = xchg(&server->tsk, NULL); |
1406 | if (task) | |
1407 | force_sig(SIGKILL, task); | |
1da177e4 LT |
1408 | } |
1409 | ||
63c038c2 JL |
1410 | static struct TCP_Server_Info * |
1411 | cifs_get_tcp_session(struct smb_vol *volume_info) | |
1412 | { | |
1413 | struct TCP_Server_Info *tcp_ses = NULL; | |
1414 | struct sockaddr addr; | |
1415 | struct sockaddr_in *sin_server = (struct sockaddr_in *) &addr; | |
1416 | struct sockaddr_in6 *sin_server6 = (struct sockaddr_in6 *) &addr; | |
1417 | int rc; | |
1418 | ||
1419 | memset(&addr, 0, sizeof(struct sockaddr)); | |
1420 | ||
1421 | if (volume_info->UNCip && volume_info->UNC) { | |
1422 | rc = cifs_inet_pton(AF_INET, volume_info->UNCip, | |
1423 | &sin_server->sin_addr.s_addr); | |
1424 | ||
1425 | if (rc <= 0) { | |
1426 | /* not ipv4 address, try ipv6 */ | |
1427 | rc = cifs_inet_pton(AF_INET6, volume_info->UNCip, | |
1428 | &sin_server6->sin6_addr.in6_u); | |
1429 | if (rc > 0) | |
1430 | addr.sa_family = AF_INET6; | |
1431 | } else { | |
1432 | addr.sa_family = AF_INET; | |
1433 | } | |
1434 | ||
1435 | if (rc <= 0) { | |
1436 | /* we failed translating address */ | |
1437 | rc = -EINVAL; | |
1438 | goto out_err; | |
1439 | } | |
1440 | ||
1441 | cFYI(1, ("UNC: %s ip: %s", volume_info->UNC, | |
1442 | volume_info->UNCip)); | |
1443 | } else if (volume_info->UNCip) { | |
1444 | /* BB using ip addr as tcp_ses name to connect to the | |
1445 | DFS root below */ | |
1446 | cERROR(1, ("Connecting to DFS root not implemented yet")); | |
1447 | rc = -EINVAL; | |
1448 | goto out_err; | |
1449 | } else /* which tcp_sess DFS root would we conect to */ { | |
1450 | cERROR(1, | |
1451 | ("CIFS mount error: No UNC path (e.g. -o " | |
1452 | "unc=//192.168.1.100/public) specified")); | |
1453 | rc = -EINVAL; | |
1454 | goto out_err; | |
1455 | } | |
1456 | ||
1457 | /* see if we already have a matching tcp_ses */ | |
1458 | tcp_ses = cifs_find_tcp_session(&addr); | |
1459 | if (tcp_ses) | |
1460 | return tcp_ses; | |
1461 | ||
1462 | tcp_ses = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); | |
1463 | if (!tcp_ses) { | |
1464 | rc = -ENOMEM; | |
1465 | goto out_err; | |
1466 | } | |
1467 | ||
1468 | tcp_ses->hostname = extract_hostname(volume_info->UNC); | |
1469 | if (IS_ERR(tcp_ses->hostname)) { | |
1470 | rc = PTR_ERR(tcp_ses->hostname); | |
1471 | goto out_err; | |
1472 | } | |
1473 | ||
1474 | tcp_ses->noblocksnd = volume_info->noblocksnd; | |
1475 | tcp_ses->noautotune = volume_info->noautotune; | |
1476 | atomic_set(&tcp_ses->inFlight, 0); | |
1477 | init_waitqueue_head(&tcp_ses->response_q); | |
1478 | init_waitqueue_head(&tcp_ses->request_q); | |
1479 | INIT_LIST_HEAD(&tcp_ses->pending_mid_q); | |
1480 | mutex_init(&tcp_ses->srv_mutex); | |
1481 | memcpy(tcp_ses->workstation_RFC1001_name, | |
1482 | volume_info->source_rfc1001_name, RFC1001_NAME_LEN_WITH_NULL); | |
1483 | memcpy(tcp_ses->server_RFC1001_name, | |
1484 | volume_info->target_rfc1001_name, RFC1001_NAME_LEN_WITH_NULL); | |
1485 | tcp_ses->sequence_number = 0; | |
1486 | INIT_LIST_HEAD(&tcp_ses->tcp_ses_list); | |
1487 | INIT_LIST_HEAD(&tcp_ses->smb_ses_list); | |
1488 | ||
1489 | /* | |
1490 | * at this point we are the only ones with the pointer | |
1491 | * to the struct since the kernel thread not created yet | |
1492 | * no need to spinlock this init of tcpStatus or srv_count | |
1493 | */ | |
1494 | tcp_ses->tcpStatus = CifsNew; | |
1495 | ++tcp_ses->srv_count; | |
1496 | ||
1497 | if (addr.sa_family == AF_INET6) { | |
1498 | cFYI(1, ("attempting ipv6 connect")); | |
1499 | /* BB should we allow ipv6 on port 139? */ | |
1500 | /* other OS never observed in Wild doing 139 with v6 */ | |
1501 | memcpy(&tcp_ses->addr.sockAddr6, sin_server6, | |
1502 | sizeof(struct sockaddr_in6)); | |
1503 | sin_server6->sin6_port = htons(volume_info->port); | |
1504 | rc = ipv6_connect(sin_server6, &tcp_ses->ssocket, | |
1505 | volume_info->noblocksnd); | |
1506 | } else { | |
1507 | memcpy(&tcp_ses->addr.sockAddr, sin_server, | |
1508 | sizeof(struct sockaddr_in)); | |
1509 | sin_server->sin_port = htons(volume_info->port); | |
bcf4b106 | 1510 | rc = ipv4_connect(tcp_ses); |
63c038c2 JL |
1511 | } |
1512 | if (rc < 0) { | |
1513 | cERROR(1, ("Error connecting to socket. Aborting operation")); | |
1514 | goto out_err; | |
1515 | } | |
1516 | ||
1517 | /* | |
1518 | * since we're in a cifs function already, we know that | |
1519 | * this will succeed. No need for try_module_get(). | |
1520 | */ | |
1521 | __module_get(THIS_MODULE); | |
1522 | tcp_ses->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, | |
1523 | tcp_ses, "cifsd"); | |
1524 | if (IS_ERR(tcp_ses->tsk)) { | |
1525 | rc = PTR_ERR(tcp_ses->tsk); | |
1526 | cERROR(1, ("error %d create cifsd thread", rc)); | |
1527 | module_put(THIS_MODULE); | |
1528 | goto out_err; | |
1529 | } | |
1530 | ||
1531 | /* thread spawned, put it on the list */ | |
1532 | write_lock(&cifs_tcp_ses_lock); | |
1533 | list_add(&tcp_ses->tcp_ses_list, &cifs_tcp_ses_list); | |
1534 | write_unlock(&cifs_tcp_ses_lock); | |
1535 | ||
1536 | return tcp_ses; | |
1537 | ||
1538 | out_err: | |
1539 | if (tcp_ses) { | |
1540 | kfree(tcp_ses->hostname); | |
1541 | if (tcp_ses->ssocket) | |
1542 | sock_release(tcp_ses->ssocket); | |
1543 | kfree(tcp_ses); | |
1544 | } | |
1545 | return ERR_PTR(rc); | |
1546 | } | |
1547 | ||
14fbf50d JL |
1548 | static struct cifsSesInfo * |
1549 | cifs_find_smb_ses(struct TCP_Server_Info *server, char *username) | |
1550 | { | |
1551 | struct list_head *tmp; | |
1552 | struct cifsSesInfo *ses; | |
1553 | ||
1554 | write_lock(&cifs_tcp_ses_lock); | |
1555 | list_for_each(tmp, &server->smb_ses_list) { | |
1556 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); | |
1557 | if (strncmp(ses->userName, username, MAX_USERNAME_SIZE)) | |
1558 | continue; | |
1559 | ||
1560 | ++ses->ses_count; | |
1561 | write_unlock(&cifs_tcp_ses_lock); | |
1562 | return ses; | |
1563 | } | |
1564 | write_unlock(&cifs_tcp_ses_lock); | |
1565 | return NULL; | |
1566 | } | |
1567 | ||
1568 | static void | |
1569 | cifs_put_smb_ses(struct cifsSesInfo *ses) | |
1570 | { | |
1571 | int xid; | |
1572 | struct TCP_Server_Info *server = ses->server; | |
1573 | ||
1574 | write_lock(&cifs_tcp_ses_lock); | |
1575 | if (--ses->ses_count > 0) { | |
1576 | write_unlock(&cifs_tcp_ses_lock); | |
1577 | return; | |
1578 | } | |
1579 | ||
1580 | list_del_init(&ses->smb_ses_list); | |
1581 | write_unlock(&cifs_tcp_ses_lock); | |
1582 | ||
1583 | if (ses->status == CifsGood) { | |
1584 | xid = GetXid(); | |
1585 | CIFSSMBLogoff(xid, ses); | |
1586 | _FreeXid(xid); | |
1587 | } | |
1588 | sesInfoFree(ses); | |
1589 | cifs_put_tcp_session(server); | |
1590 | } | |
1591 | ||
f1987b44 JL |
1592 | static struct cifsTconInfo * |
1593 | cifs_find_tcon(struct cifsSesInfo *ses, const char *unc) | |
1594 | { | |
1595 | struct list_head *tmp; | |
1596 | struct cifsTconInfo *tcon; | |
1597 | ||
1598 | write_lock(&cifs_tcp_ses_lock); | |
1599 | list_for_each(tmp, &ses->tcon_list) { | |
1600 | tcon = list_entry(tmp, struct cifsTconInfo, tcon_list); | |
1601 | if (tcon->tidStatus == CifsExiting) | |
1602 | continue; | |
1603 | if (strncmp(tcon->treeName, unc, MAX_TREE_SIZE)) | |
1604 | continue; | |
1605 | ||
1606 | ++tcon->tc_count; | |
1607 | write_unlock(&cifs_tcp_ses_lock); | |
1608 | return tcon; | |
1609 | } | |
1610 | write_unlock(&cifs_tcp_ses_lock); | |
1611 | return NULL; | |
1612 | } | |
1613 | ||
1614 | static void | |
1615 | cifs_put_tcon(struct cifsTconInfo *tcon) | |
1616 | { | |
1617 | int xid; | |
1618 | struct cifsSesInfo *ses = tcon->ses; | |
1619 | ||
1620 | write_lock(&cifs_tcp_ses_lock); | |
1621 | if (--tcon->tc_count > 0) { | |
1622 | write_unlock(&cifs_tcp_ses_lock); | |
1623 | return; | |
1624 | } | |
1625 | ||
1626 | list_del_init(&tcon->tcon_list); | |
1627 | write_unlock(&cifs_tcp_ses_lock); | |
1628 | ||
1629 | xid = GetXid(); | |
1630 | CIFSSMBTDis(xid, tcon); | |
1631 | _FreeXid(xid); | |
1632 | ||
1633 | DeleteTconOplockQEntries(tcon); | |
1634 | tconInfoFree(tcon); | |
1635 | cifs_put_smb_ses(ses); | |
1636 | } | |
1637 | ||
1da177e4 | 1638 | int |
50c2f753 SF |
1639 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, |
1640 | const struct nls_table *nls_codepage, unsigned int *pnum_referrals, | |
366781c1 | 1641 | struct dfs_info3_param **preferrals, int remap) |
1da177e4 LT |
1642 | { |
1643 | char *temp_unc; | |
1644 | int rc = 0; | |
1645 | ||
1646 | *pnum_referrals = 0; | |
366781c1 | 1647 | *preferrals = NULL; |
1da177e4 LT |
1648 | |
1649 | if (pSesInfo->ipc_tid == 0) { | |
1650 | temp_unc = kmalloc(2 /* for slashes */ + | |
50c2f753 SF |
1651 | strnlen(pSesInfo->serverName, |
1652 | SERVER_NAME_LEN_WITH_NULL * 2) | |
1da177e4 LT |
1653 | + 1 + 4 /* slash IPC$ */ + 2, |
1654 | GFP_KERNEL); | |
1655 | if (temp_unc == NULL) | |
1656 | return -ENOMEM; | |
1657 | temp_unc[0] = '\\'; | |
1658 | temp_unc[1] = '\\'; | |
1659 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1660 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1661 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1662 | cFYI(1, | |
50c2f753 | 1663 | ("CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid)); |
1da177e4 LT |
1664 | kfree(temp_unc); |
1665 | } | |
1666 | if (rc == 0) | |
c2cf07d5 | 1667 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, |
737b758c | 1668 | pnum_referrals, nls_codepage, remap); |
366781c1 SF |
1669 | /* BB map targetUNCs to dfs_info3 structures, here or |
1670 | in CIFSGetDFSRefer BB */ | |
1da177e4 LT |
1671 | |
1672 | return rc; | |
1673 | } | |
1674 | ||
09e50d55 JL |
1675 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
1676 | static struct lock_class_key cifs_key[2]; | |
1677 | static struct lock_class_key cifs_slock_key[2]; | |
1678 | ||
1679 | static inline void | |
1680 | cifs_reclassify_socket4(struct socket *sock) | |
1681 | { | |
1682 | struct sock *sk = sock->sk; | |
1683 | BUG_ON(sock_owned_by_user(sk)); | |
1684 | sock_lock_init_class_and_name(sk, "slock-AF_INET-CIFS", | |
1685 | &cifs_slock_key[0], "sk_lock-AF_INET-CIFS", &cifs_key[0]); | |
1686 | } | |
1687 | ||
1688 | static inline void | |
1689 | cifs_reclassify_socket6(struct socket *sock) | |
1690 | { | |
1691 | struct sock *sk = sock->sk; | |
1692 | BUG_ON(sock_owned_by_user(sk)); | |
1693 | sock_lock_init_class_and_name(sk, "slock-AF_INET6-CIFS", | |
1694 | &cifs_slock_key[1], "sk_lock-AF_INET6-CIFS", &cifs_key[1]); | |
1695 | } | |
1696 | #else | |
1697 | static inline void | |
1698 | cifs_reclassify_socket4(struct socket *sock) | |
1699 | { | |
1700 | } | |
1701 | ||
1702 | static inline void | |
1703 | cifs_reclassify_socket6(struct socket *sock) | |
1704 | { | |
1705 | } | |
1706 | #endif | |
1707 | ||
1da177e4 | 1708 | /* See RFC1001 section 14 on representation of Netbios names */ |
50c2f753 | 1709 | static void rfc1002mangle(char *target, char *source, unsigned int length) |
1da177e4 | 1710 | { |
50c2f753 | 1711 | unsigned int i, j; |
1da177e4 | 1712 | |
50c2f753 | 1713 | for (i = 0, j = 0; i < (length); i++) { |
1da177e4 LT |
1714 | /* mask a nibble at a time and encode */ |
1715 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1716 | target[j+1] = 'A' + (0x0F & source[i]); | |
50c2f753 | 1717 | j += 2; |
1da177e4 LT |
1718 | } |
1719 | ||
1720 | } | |
1721 | ||
1722 | ||
1723 | static int | |
bcf4b106 | 1724 | ipv4_connect(struct TCP_Server_Info *server) |
1da177e4 LT |
1725 | { |
1726 | int rc = 0; | |
bcf4b106 | 1727 | bool connected = false; |
1da177e4 | 1728 | __be16 orig_port = 0; |
bcf4b106 | 1729 | struct socket *socket = server->ssocket; |
1da177e4 | 1730 | |
bcf4b106 | 1731 | if (socket == NULL) { |
50c2f753 | 1732 | rc = sock_create_kern(PF_INET, SOCK_STREAM, |
bcf4b106 | 1733 | IPPROTO_TCP, &socket); |
1da177e4 | 1734 | if (rc < 0) { |
50c2f753 | 1735 | cERROR(1, ("Error %d creating socket", rc)); |
1da177e4 | 1736 | return rc; |
1da177e4 | 1737 | } |
bcf4b106 JL |
1738 | |
1739 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1740 | cFYI(1, ("Socket created")); | |
1741 | server->ssocket = socket; | |
1742 | socket->sk->sk_allocation = GFP_NOFS; | |
1743 | cifs_reclassify_socket4(socket); | |
1da177e4 LT |
1744 | } |
1745 | ||
bcf4b106 JL |
1746 | /* user overrode default port */ |
1747 | if (server->addr.sockAddr.sin_port) { | |
1748 | rc = socket->ops->connect(socket, (struct sockaddr *) | |
1749 | &server->addr.sockAddr, | |
1750 | sizeof(struct sockaddr_in), 0); | |
1da177e4 | 1751 | if (rc >= 0) |
bcf4b106 | 1752 | connected = true; |
50c2f753 | 1753 | } |
1da177e4 | 1754 | |
fb8c4b14 | 1755 | if (!connected) { |
50c2f753 | 1756 | /* save original port so we can retry user specified port |
1da177e4 | 1757 | later if fall back ports fail this time */ |
bcf4b106 | 1758 | orig_port = server->addr.sockAddr.sin_port; |
1da177e4 LT |
1759 | |
1760 | /* do not retry on the same port we just failed on */ | |
bcf4b106 JL |
1761 | if (server->addr.sockAddr.sin_port != htons(CIFS_PORT)) { |
1762 | server->addr.sockAddr.sin_port = htons(CIFS_PORT); | |
1763 | rc = socket->ops->connect(socket, | |
1764 | (struct sockaddr *) | |
1765 | &server->addr.sockAddr, | |
1766 | sizeof(struct sockaddr_in), 0); | |
1da177e4 | 1767 | if (rc >= 0) |
bcf4b106 | 1768 | connected = true; |
1da177e4 LT |
1769 | } |
1770 | } | |
1771 | if (!connected) { | |
bcf4b106 JL |
1772 | server->addr.sockAddr.sin_port = htons(RFC1001_PORT); |
1773 | rc = socket->ops->connect(socket, (struct sockaddr *) | |
1774 | &server->addr.sockAddr, | |
6345a3a8 | 1775 | sizeof(struct sockaddr_in), 0); |
50c2f753 | 1776 | if (rc >= 0) |
bcf4b106 | 1777 | connected = true; |
1da177e4 LT |
1778 | } |
1779 | ||
1780 | /* give up here - unless we want to retry on different | |
1781 | protocol families some day */ | |
1782 | if (!connected) { | |
fb8c4b14 | 1783 | if (orig_port) |
bcf4b106 | 1784 | server->addr.sockAddr.sin_port = orig_port; |
50c2f753 | 1785 | cFYI(1, ("Error %d connecting to server via ipv4", rc)); |
bcf4b106 JL |
1786 | sock_release(socket); |
1787 | server->ssocket = NULL; | |
1da177e4 LT |
1788 | return rc; |
1789 | } | |
bcf4b106 JL |
1790 | |
1791 | ||
1792 | /* | |
1793 | * Eventually check for other socket options to change from | |
1794 | * the default. sock_setsockopt not used because it expects | |
1795 | * user space buffer | |
1796 | */ | |
1797 | socket->sk->sk_rcvtimeo = 7 * HZ; | |
1798 | socket->sk->sk_sndtimeo = 3 * HZ; | |
edf1ae40 | 1799 | |
b387eaeb | 1800 | /* make the bufsizes depend on wsize/rsize and max requests */ |
bcf4b106 JL |
1801 | if (server->noautotune) { |
1802 | if (socket->sk->sk_sndbuf < (200 * 1024)) | |
1803 | socket->sk->sk_sndbuf = 200 * 1024; | |
1804 | if (socket->sk->sk_rcvbuf < (140 * 1024)) | |
1805 | socket->sk->sk_rcvbuf = 140 * 1024; | |
edf1ae40 | 1806 | } |
1da177e4 | 1807 | |
bcf4b106 JL |
1808 | cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", |
1809 | socket->sk->sk_sndbuf, | |
1810 | socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo)); | |
1811 | ||
1da177e4 | 1812 | /* send RFC1001 sessinit */ |
bcf4b106 | 1813 | if (server->addr.sockAddr.sin_port == htons(RFC1001_PORT)) { |
1da177e4 | 1814 | /* some servers require RFC1001 sessinit before sending |
50c2f753 | 1815 | negprot - BB check reconnection in case where second |
1da177e4 | 1816 | sessinit is sent but no second negprot */ |
50c2f753 SF |
1817 | struct rfc1002_session_packet *ses_init_buf; |
1818 | struct smb_hdr *smb_buf; | |
1819 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), | |
1820 | GFP_KERNEL); | |
fb8c4b14 | 1821 | if (ses_init_buf) { |
1da177e4 | 1822 | ses_init_buf->trailer.session_req.called_len = 32; |
bcf4b106 JL |
1823 | if (server->server_RFC1001_name && |
1824 | server->server_RFC1001_name[0] != 0) | |
8ecaf67a JL |
1825 | rfc1002mangle(ses_init_buf->trailer. |
1826 | session_req.called_name, | |
bcf4b106 | 1827 | server->server_RFC1001_name, |
8ecaf67a | 1828 | RFC1001_NAME_LEN_WITH_NULL); |
bcf4b106 | 1829 | else |
8ecaf67a JL |
1830 | rfc1002mangle(ses_init_buf->trailer. |
1831 | session_req.called_name, | |
1832 | DEFAULT_CIFS_CALLED_NAME, | |
1833 | RFC1001_NAME_LEN_WITH_NULL); | |
a10faeb2 | 1834 | |
1da177e4 | 1835 | ses_init_buf->trailer.session_req.calling_len = 32; |
bcf4b106 | 1836 | |
1da177e4 LT |
1837 | /* calling name ends in null (byte 16) from old smb |
1838 | convention. */ | |
bcf4b106 JL |
1839 | if (server->workstation_RFC1001_name && |
1840 | server->workstation_RFC1001_name[0] != 0) | |
8ecaf67a JL |
1841 | rfc1002mangle(ses_init_buf->trailer. |
1842 | session_req.calling_name, | |
bcf4b106 | 1843 | server->workstation_RFC1001_name, |
8ecaf67a | 1844 | RFC1001_NAME_LEN_WITH_NULL); |
bcf4b106 | 1845 | else |
8ecaf67a JL |
1846 | rfc1002mangle(ses_init_buf->trailer. |
1847 | session_req.calling_name, | |
1848 | "LINUX_CIFS_CLNT", | |
1849 | RFC1001_NAME_LEN_WITH_NULL); | |
bcf4b106 | 1850 | |
1da177e4 LT |
1851 | ses_init_buf->trailer.session_req.scope1 = 0; |
1852 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1853 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1854 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1855 | smb_buf->smb_buf_length = 0x81000044; | |
bcf4b106 JL |
1856 | rc = smb_send(socket, smb_buf, 0x44, |
1857 | (struct sockaddr *) &server->addr.sockAddr, | |
1858 | server->noblocksnd); | |
1da177e4 | 1859 | kfree(ses_init_buf); |
50c2f753 | 1860 | msleep(1); /* RFC1001 layer in at least one server |
083d3a2c SF |
1861 | requires very short break before negprot |
1862 | presumably because not expecting negprot | |
1863 | to follow so fast. This is a simple | |
50c2f753 | 1864 | solution that works without |
083d3a2c SF |
1865 | complicating the code and causes no |
1866 | significant slowing down on mount | |
1867 | for everyone else */ | |
1da177e4 | 1868 | } |
50c2f753 | 1869 | /* else the negprot may still work without this |
1da177e4 | 1870 | even though malloc failed */ |
50c2f753 | 1871 | |
1da177e4 | 1872 | } |
50c2f753 | 1873 | |
1da177e4 LT |
1874 | return rc; |
1875 | } | |
1876 | ||
1877 | static int | |
edf1ae40 SF |
1878 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket, |
1879 | bool noblocksnd) | |
1da177e4 LT |
1880 | { |
1881 | int rc = 0; | |
1882 | int connected = 0; | |
1883 | __be16 orig_port = 0; | |
1884 | ||
fb8c4b14 | 1885 | if (*csocket == NULL) { |
50c2f753 SF |
1886 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, |
1887 | IPPROTO_TCP, csocket); | |
1da177e4 | 1888 | if (rc < 0) { |
50c2f753 | 1889 | cERROR(1, ("Error %d creating ipv6 socket", rc)); |
1da177e4 LT |
1890 | *csocket = NULL; |
1891 | return rc; | |
1892 | } else { | |
1893 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
fb8c4b14 | 1894 | cFYI(1, ("ipv6 Socket created")); |
1da177e4 | 1895 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
09e50d55 | 1896 | cifs_reclassify_socket6(*csocket); |
1da177e4 LT |
1897 | } |
1898 | } | |
1899 | ||
1900 | psin_server->sin6_family = AF_INET6; | |
1901 | ||
fb8c4b14 | 1902 | if (psin_server->sin6_port) { /* user overrode default port */ |
1da177e4 LT |
1903 | rc = (*csocket)->ops->connect(*csocket, |
1904 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1905 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1906 | if (rc >= 0) |
1907 | connected = 1; | |
50c2f753 | 1908 | } |
1da177e4 | 1909 | |
fb8c4b14 | 1910 | if (!connected) { |
50c2f753 | 1911 | /* save original port so we can retry user specified port |
1da177e4 LT |
1912 | later if fall back ports fail this time */ |
1913 | ||
1914 | orig_port = psin_server->sin6_port; | |
1915 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1916 | if (psin_server->sin6_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1917 | psin_server->sin6_port = htons(CIFS_PORT); |
1918 | ||
1919 | rc = (*csocket)->ops->connect(*csocket, | |
1920 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1921 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1922 | if (rc >= 0) |
1923 | connected = 1; | |
1924 | } | |
1925 | } | |
1926 | if (!connected) { | |
1927 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1928 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
6345a3a8 | 1929 | psin_server, sizeof(struct sockaddr_in6), 0); |
50c2f753 | 1930 | if (rc >= 0) |
1da177e4 LT |
1931 | connected = 1; |
1932 | } | |
1933 | ||
1934 | /* give up here - unless we want to retry on different | |
1935 | protocol families some day */ | |
1936 | if (!connected) { | |
fb8c4b14 | 1937 | if (orig_port) |
1da177e4 | 1938 | psin_server->sin6_port = orig_port; |
50c2f753 | 1939 | cFYI(1, ("Error %d connecting to server via ipv6", rc)); |
1da177e4 LT |
1940 | sock_release(*csocket); |
1941 | *csocket = NULL; | |
1942 | return rc; | |
1943 | } | |
50c2f753 SF |
1944 | /* Eventually check for other socket options to change from |
1945 | the default. sock_setsockopt not used because it expects | |
1da177e4 LT |
1946 | user space buffer */ |
1947 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
edf1ae40 SF |
1948 | if (!noblocksnd) |
1949 | (*csocket)->sk->sk_sndtimeo = 3 * HZ; | |
1950 | ||
50c2f753 | 1951 | |
1da177e4 LT |
1952 | return rc; |
1953 | } | |
1954 | ||
50c2f753 SF |
1955 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon, |
1956 | struct super_block *sb, struct smb_vol *vol_info) | |
8af18971 SF |
1957 | { |
1958 | /* if we are reconnecting then should we check to see if | |
1959 | * any requested capabilities changed locally e.g. via | |
1960 | * remount but we can not do much about it here | |
1961 | * if they have (even if we could detect it by the following) | |
1962 | * Perhaps we could add a backpointer to array of sb from tcon | |
1963 | * or if we change to make all sb to same share the same | |
1964 | * sb as NFS - then we only have one backpointer to sb. | |
1965 | * What if we wanted to mount the server share twice once with | |
1966 | * and once without posixacls or posix paths? */ | |
1967 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
50c2f753 | 1968 | |
c18c842b SF |
1969 | if (vol_info && vol_info->no_linux_ext) { |
1970 | tcon->fsUnixInfo.Capability = 0; | |
1971 | tcon->unix_ext = 0; /* Unix Extensions disabled */ | |
1972 | cFYI(1, ("Linux protocol extensions disabled")); | |
1973 | return; | |
1974 | } else if (vol_info) | |
1975 | tcon->unix_ext = 1; /* Unix Extensions supported */ | |
1976 | ||
1977 | if (tcon->unix_ext == 0) { | |
1978 | cFYI(1, ("Unix extensions disabled so not set on reconnect")); | |
1979 | return; | |
1980 | } | |
50c2f753 | 1981 | |
fb8c4b14 | 1982 | if (!CIFSSMBQFSUnixInfo(xid, tcon)) { |
8af18971 | 1983 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
50c2f753 | 1984 | |
8af18971 SF |
1985 | /* check for reconnect case in which we do not |
1986 | want to change the mount behavior if we can avoid it */ | |
fb8c4b14 | 1987 | if (vol_info == NULL) { |
50c2f753 | 1988 | /* turn off POSIX ACL and PATHNAMES if not set |
8af18971 SF |
1989 | originally at mount time */ |
1990 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) | |
1991 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
11b6d645 IM |
1992 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1993 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) | |
1994 | cERROR(1, ("POSIXPATH support change")); | |
8af18971 | 1995 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
11b6d645 IM |
1996 | } else if ((cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1997 | cERROR(1, ("possible reconnect error")); | |
1998 | cERROR(1, | |
1999 | ("server disabled POSIX path support")); | |
2000 | } | |
8af18971 | 2001 | } |
50c2f753 | 2002 | |
8af18971 | 2003 | cap &= CIFS_UNIX_CAP_MASK; |
75865f8c | 2004 | if (vol_info && vol_info->no_psx_acl) |
8af18971 | 2005 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
75865f8c | 2006 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
fb8c4b14 SF |
2007 | cFYI(1, ("negotiated posix acl support")); |
2008 | if (sb) | |
8af18971 SF |
2009 | sb->s_flags |= MS_POSIXACL; |
2010 | } | |
2011 | ||
75865f8c | 2012 | if (vol_info && vol_info->posix_paths == 0) |
8af18971 | 2013 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
75865f8c | 2014 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
fb8c4b14 | 2015 | cFYI(1, ("negotiate posix pathnames")); |
75865f8c | 2016 | if (sb) |
50c2f753 | 2017 | CIFS_SB(sb)->mnt_cifs_flags |= |
8af18971 SF |
2018 | CIFS_MOUNT_POSIX_PATHS; |
2019 | } | |
50c2f753 | 2020 | |
984acfe1 SF |
2021 | /* We might be setting the path sep back to a different |
2022 | form if we are reconnecting and the server switched its | |
50c2f753 | 2023 | posix path capability for this share */ |
75865f8c | 2024 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
984acfe1 | 2025 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
75865f8c SF |
2026 | |
2027 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { | |
2028 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { | |
2029 | CIFS_SB(sb)->rsize = 127 * 1024; | |
90c81e0b SF |
2030 | cFYI(DBG2, |
2031 | ("larger reads not supported by srv")); | |
75865f8c SF |
2032 | } |
2033 | } | |
50c2f753 SF |
2034 | |
2035 | ||
2036 | cFYI(1, ("Negotiate caps 0x%x", (int)cap)); | |
8af18971 | 2037 | #ifdef CONFIG_CIFS_DEBUG2 |
75865f8c | 2038 | if (cap & CIFS_UNIX_FCNTL_CAP) |
fb8c4b14 | 2039 | cFYI(1, ("FCNTL cap")); |
75865f8c | 2040 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
fb8c4b14 | 2041 | cFYI(1, ("EXTATTR cap")); |
75865f8c | 2042 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
fb8c4b14 | 2043 | cFYI(1, ("POSIX path cap")); |
75865f8c | 2044 | if (cap & CIFS_UNIX_XATTR_CAP) |
fb8c4b14 | 2045 | cFYI(1, ("XATTR cap")); |
75865f8c | 2046 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
fb8c4b14 | 2047 | cFYI(1, ("POSIX ACL cap")); |
75865f8c | 2048 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
fb8c4b14 | 2049 | cFYI(1, ("very large read cap")); |
75865f8c | 2050 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) |
fb8c4b14 | 2051 | cFYI(1, ("very large write cap")); |
8af18971 SF |
2052 | #endif /* CIFS_DEBUG2 */ |
2053 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
442aa310 | 2054 | if (vol_info == NULL) { |
5a44b319 | 2055 | cFYI(1, ("resetting capabilities failed")); |
442aa310 | 2056 | } else |
5a44b319 SF |
2057 | cERROR(1, ("Negotiating Unix capabilities " |
2058 | "with the server failed. Consider " | |
2059 | "mounting with the Unix Extensions\n" | |
2060 | "disabled, if problems are found, " | |
2061 | "by specifying the nounix mount " | |
2224f4e5 | 2062 | "option.")); |
5a44b319 | 2063 | |
8af18971 SF |
2064 | } |
2065 | } | |
2066 | } | |
2067 | ||
03a143c9 SF |
2068 | static void |
2069 | convert_delimiter(char *path, char delim) | |
2070 | { | |
2071 | int i; | |
c2d68ea6 | 2072 | char old_delim; |
03a143c9 SF |
2073 | |
2074 | if (path == NULL) | |
2075 | return; | |
2076 | ||
582d21e5 | 2077 | if (delim == '/') |
c2d68ea6 SF |
2078 | old_delim = '\\'; |
2079 | else | |
2080 | old_delim = '/'; | |
2081 | ||
03a143c9 | 2082 | for (i = 0; path[i] != '\0'; i++) { |
c2d68ea6 | 2083 | if (path[i] == old_delim) |
03a143c9 SF |
2084 | path[i] = delim; |
2085 | } | |
2086 | } | |
2087 | ||
3b795210 SF |
2088 | static void setup_cifs_sb(struct smb_vol *pvolume_info, |
2089 | struct cifs_sb_info *cifs_sb) | |
2090 | { | |
2091 | if (pvolume_info->rsize > CIFSMaxBufSize) { | |
2092 | cERROR(1, ("rsize %d too large, using MaxBufSize", | |
2093 | pvolume_info->rsize)); | |
2094 | cifs_sb->rsize = CIFSMaxBufSize; | |
2095 | } else if ((pvolume_info->rsize) && | |
2096 | (pvolume_info->rsize <= CIFSMaxBufSize)) | |
2097 | cifs_sb->rsize = pvolume_info->rsize; | |
2098 | else /* default */ | |
2099 | cifs_sb->rsize = CIFSMaxBufSize; | |
2100 | ||
2101 | if (pvolume_info->wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { | |
2102 | cERROR(1, ("wsize %d too large, using 4096 instead", | |
2103 | pvolume_info->wsize)); | |
2104 | cifs_sb->wsize = 4096; | |
2105 | } else if (pvolume_info->wsize) | |
2106 | cifs_sb->wsize = pvolume_info->wsize; | |
2107 | else | |
2108 | cifs_sb->wsize = min_t(const int, | |
2109 | PAGEVEC_SIZE * PAGE_CACHE_SIZE, | |
2110 | 127*1024); | |
2111 | /* old default of CIFSMaxBufSize was too small now | |
2112 | that SMB Write2 can send multiple pages in kvec. | |
2113 | RFC1001 does not describe what happens when frame | |
2114 | bigger than 128K is sent so use that as max in | |
2115 | conjunction with 52K kvec constraint on arch with 4K | |
2116 | page size */ | |
2117 | ||
2118 | if (cifs_sb->rsize < 2048) { | |
2119 | cifs_sb->rsize = 2048; | |
2120 | /* Windows ME may prefer this */ | |
2121 | cFYI(1, ("readsize set to minimum: 2048")); | |
2122 | } | |
2123 | /* calculate prepath */ | |
2124 | cifs_sb->prepath = pvolume_info->prepath; | |
2125 | if (cifs_sb->prepath) { | |
2126 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); | |
2127 | /* we can not convert the / to \ in the path | |
2128 | separators in the prefixpath yet because we do not | |
2129 | know (until reset_cifs_unix_caps is called later) | |
2130 | whether POSIX PATH CAP is available. We normalize | |
2131 | the / to \ after reset_cifs_unix_caps is called */ | |
2132 | pvolume_info->prepath = NULL; | |
2133 | } else | |
2134 | cifs_sb->prepathlen = 0; | |
2135 | cifs_sb->mnt_uid = pvolume_info->linux_uid; | |
2136 | cifs_sb->mnt_gid = pvolume_info->linux_gid; | |
2137 | cifs_sb->mnt_file_mode = pvolume_info->file_mode; | |
2138 | cifs_sb->mnt_dir_mode = pvolume_info->dir_mode; | |
2139 | cFYI(1, ("file mode: 0x%x dir mode: 0x%x", | |
2140 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode)); | |
2141 | ||
2142 | if (pvolume_info->noperm) | |
2143 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; | |
2144 | if (pvolume_info->setuids) | |
2145 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; | |
2146 | if (pvolume_info->server_ino) | |
2147 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; | |
2148 | if (pvolume_info->remap) | |
2149 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; | |
2150 | if (pvolume_info->no_xattr) | |
2151 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; | |
2152 | if (pvolume_info->sfu_emul) | |
2153 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; | |
2154 | if (pvolume_info->nobrl) | |
2155 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; | |
2156 | if (pvolume_info->cifs_acl) | |
2157 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; | |
2158 | if (pvolume_info->override_uid) | |
2159 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; | |
2160 | if (pvolume_info->override_gid) | |
2161 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; | |
2162 | if (pvolume_info->dynperm) | |
2163 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM; | |
2164 | if (pvolume_info->direct_io) { | |
2165 | cFYI(1, ("mounting share using direct i/o")); | |
2166 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; | |
2167 | } | |
2168 | ||
2169 | if ((pvolume_info->cifs_acl) && (pvolume_info->dynperm)) | |
2170 | cERROR(1, ("mount option dynperm ignored if cifsacl " | |
2171 | "mount option supported")); | |
2172 | } | |
2173 | ||
1da177e4 LT |
2174 | int |
2175 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
2176 | char *mount_data, const char *devname) | |
2177 | { | |
2178 | int rc = 0; | |
2179 | int xid; | |
7586b765 | 2180 | struct smb_vol *volume_info; |
1da177e4 | 2181 | struct cifsSesInfo *pSesInfo = NULL; |
1da177e4 LT |
2182 | struct cifsTconInfo *tcon = NULL; |
2183 | struct TCP_Server_Info *srvTcp = NULL; | |
2184 | ||
2185 | xid = GetXid(); | |
2186 | ||
7586b765 JL |
2187 | volume_info = kzalloc(sizeof(struct smb_vol), GFP_KERNEL); |
2188 | if (!volume_info) { | |
2189 | rc = -ENOMEM; | |
2190 | goto out; | |
2191 | } | |
50c2f753 | 2192 | |
7586b765 | 2193 | if (cifs_parse_mount_options(mount_data, devname, volume_info)) { |
70fe7dc0 JL |
2194 | rc = -EINVAL; |
2195 | goto out; | |
1da177e4 LT |
2196 | } |
2197 | ||
7586b765 | 2198 | if (volume_info->nullauth) { |
fb8c4b14 | 2199 | cFYI(1, ("null user")); |
7586b765 JL |
2200 | volume_info->username = ""; |
2201 | } else if (volume_info->username) { | |
1da177e4 | 2202 | /* BB fixme parse for domain name here */ |
7586b765 | 2203 | cFYI(1, ("Username: %s", volume_info->username)); |
1da177e4 | 2204 | } else { |
bf820679 | 2205 | cifserror("No username specified"); |
50c2f753 SF |
2206 | /* In userspace mount helper we can get user name from alternate |
2207 | locations such as env variables and files on disk */ | |
70fe7dc0 JL |
2208 | rc = -EINVAL; |
2209 | goto out; | |
1da177e4 LT |
2210 | } |
2211 | ||
1da177e4 LT |
2212 | |
2213 | /* this is needed for ASCII cp to Unicode converts */ | |
7586b765 | 2214 | if (volume_info->iocharset == NULL) { |
1da177e4 LT |
2215 | cifs_sb->local_nls = load_nls_default(); |
2216 | /* load_nls_default can not return null */ | |
2217 | } else { | |
7586b765 | 2218 | cifs_sb->local_nls = load_nls(volume_info->iocharset); |
fb8c4b14 | 2219 | if (cifs_sb->local_nls == NULL) { |
50c2f753 | 2220 | cERROR(1, ("CIFS mount error: iocharset %s not found", |
7586b765 | 2221 | volume_info->iocharset)); |
70fe7dc0 JL |
2222 | rc = -ELIBACC; |
2223 | goto out; | |
1da177e4 LT |
2224 | } |
2225 | } | |
2226 | ||
63c038c2 | 2227 | /* get a reference to a tcp session */ |
7586b765 | 2228 | srvTcp = cifs_get_tcp_session(volume_info); |
63c038c2 JL |
2229 | if (IS_ERR(srvTcp)) { |
2230 | rc = PTR_ERR(srvTcp); | |
2231 | goto out; | |
1da177e4 LT |
2232 | } |
2233 | ||
7586b765 | 2234 | pSesInfo = cifs_find_smb_ses(srvTcp, volume_info->username); |
14fbf50d | 2235 | if (pSesInfo) { |
1d9a8852 JL |
2236 | cFYI(1, ("Existing smb sess found (status=%d)", |
2237 | pSesInfo->status)); | |
14fbf50d JL |
2238 | /* |
2239 | * The existing SMB session already has a reference to srvTcp, | |
2240 | * so we can put back the extra one we got before | |
2241 | */ | |
2242 | cifs_put_tcp_session(srvTcp); | |
2243 | ||
88e7d705 | 2244 | down(&pSesInfo->sesSem); |
3b795210 | 2245 | if (pSesInfo->need_reconnect) { |
1d9a8852 | 2246 | cFYI(1, ("Session needs reconnect")); |
1d9a8852 JL |
2247 | rc = cifs_setup_session(xid, pSesInfo, |
2248 | cifs_sb->local_nls); | |
1d9a8852 | 2249 | } |
88e7d705 | 2250 | up(&pSesInfo->sesSem); |
1da177e4 | 2251 | } else if (!rc) { |
bf820679 | 2252 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 | 2253 | pSesInfo = sesInfoAlloc(); |
14fbf50d | 2254 | if (pSesInfo == NULL) { |
1da177e4 | 2255 | rc = -ENOMEM; |
14fbf50d | 2256 | goto mount_fail_check; |
1da177e4 LT |
2257 | } |
2258 | ||
14fbf50d JL |
2259 | /* new SMB session uses our srvTcp ref */ |
2260 | pSesInfo->server = srvTcp; | |
63c038c2 | 2261 | if (srvTcp->addr.sockAddr6.sin6_family == AF_INET6) |
8ecaf67a | 2262 | sprintf(pSesInfo->serverName, NIP6_FMT, |
63c038c2 | 2263 | NIP6(srvTcp->addr.sockAddr6.sin6_addr)); |
8ecaf67a JL |
2264 | else |
2265 | sprintf(pSesInfo->serverName, NIPQUAD_FMT, | |
63c038c2 | 2266 | NIPQUAD(srvTcp->addr.sockAddr.sin_addr.s_addr)); |
14fbf50d JL |
2267 | |
2268 | write_lock(&cifs_tcp_ses_lock); | |
2269 | list_add(&pSesInfo->smb_ses_list, &srvTcp->smb_ses_list); | |
2270 | write_unlock(&cifs_tcp_ses_lock); | |
2271 | ||
7586b765 JL |
2272 | /* volume_info->password freed at unmount */ |
2273 | if (volume_info->password) { | |
2274 | pSesInfo->password = volume_info->password; | |
14fbf50d | 2275 | /* set to NULL to prevent freeing on exit */ |
7586b765 | 2276 | volume_info->password = NULL; |
14fbf50d | 2277 | } |
7586b765 JL |
2278 | if (volume_info->username) |
2279 | strncpy(pSesInfo->userName, volume_info->username, | |
14fbf50d | 2280 | MAX_USERNAME_SIZE); |
7586b765 JL |
2281 | if (volume_info->domainname) { |
2282 | int len = strlen(volume_info->domainname); | |
14fbf50d JL |
2283 | pSesInfo->domainName = kmalloc(len + 1, GFP_KERNEL); |
2284 | if (pSesInfo->domainName) | |
2285 | strcpy(pSesInfo->domainName, | |
7586b765 | 2286 | volume_info->domainname); |
70fe7dc0 | 2287 | } |
7586b765 JL |
2288 | pSesInfo->linux_uid = volume_info->linux_uid; |
2289 | pSesInfo->overrideSecFlg = volume_info->secFlg; | |
14fbf50d JL |
2290 | down(&pSesInfo->sesSem); |
2291 | ||
2292 | /* BB FIXME need to pass vol->secFlgs BB */ | |
2293 | rc = cifs_setup_session(xid, pSesInfo, | |
2294 | cifs_sb->local_nls); | |
2295 | up(&pSesInfo->sesSem); | |
1da177e4 | 2296 | } |
50c2f753 | 2297 | |
1da177e4 LT |
2298 | /* search for existing tcon to this server share */ |
2299 | if (!rc) { | |
7586b765 | 2300 | setup_cifs_sb(volume_info, cifs_sb); |
27adb44c | 2301 | |
7586b765 | 2302 | tcon = cifs_find_tcon(pSesInfo, volume_info->UNC); |
1da177e4 | 2303 | if (tcon) { |
bf820679 | 2304 | cFYI(1, ("Found match on UNC path")); |
f1987b44 JL |
2305 | /* existing tcon already has a reference */ |
2306 | cifs_put_smb_ses(pSesInfo); | |
7586b765 | 2307 | if (tcon->seal != volume_info->seal) |
ab3f9929 SF |
2308 | cERROR(1, ("transport encryption setting " |
2309 | "conflicts with existing tid")); | |
1da177e4 LT |
2310 | } else { |
2311 | tcon = tconInfoAlloc(); | |
3b795210 | 2312 | if (tcon == NULL) { |
1da177e4 | 2313 | rc = -ENOMEM; |
3b795210 SF |
2314 | goto mount_fail_check; |
2315 | } | |
ab3f9929 | 2316 | tcon->ses = pSesInfo; |
3b795210 SF |
2317 | |
2318 | /* check for null share name ie connect to dfs root */ | |
7586b765 JL |
2319 | if ((strchr(volume_info->UNC + 3, '\\') == NULL) |
2320 | && (strchr(volume_info->UNC + 3, '/') == NULL)) { | |
3b795210 SF |
2321 | /* rc = connect_to_dfs_path(...) */ |
2322 | cFYI(1, ("DFS root not supported")); | |
2323 | rc = -ENODEV; | |
2324 | goto mount_fail_check; | |
2325 | } else { | |
2326 | /* BB Do we need to wrap sesSem around | |
2327 | * this TCon call and Unix SetFS as | |
2328 | * we do on SessSetup and reconnect? */ | |
7586b765 | 2329 | rc = CIFSTCon(xid, pSesInfo, volume_info->UNC, |
3b795210 SF |
2330 | tcon, cifs_sb->local_nls); |
2331 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
7586b765 | 2332 | if (volume_info->nodfs) { |
3b795210 SF |
2333 | tcon->Flags &= ~SMB_SHARE_IS_IN_DFS; |
2334 | cFYI(1, ("DFS disabled (%d)", | |
2335 | tcon->Flags)); | |
1da177e4 LT |
2336 | } |
2337 | } | |
14fbf50d | 2338 | if (rc) |
3b795210 | 2339 | goto mount_fail_check; |
7586b765 | 2340 | tcon->seal = volume_info->seal; |
f1987b44 JL |
2341 | write_lock(&cifs_tcp_ses_lock); |
2342 | list_add(&tcon->tcon_list, &pSesInfo->tcon_list); | |
2343 | write_unlock(&cifs_tcp_ses_lock); | |
1da177e4 | 2344 | } |
3b795210 SF |
2345 | |
2346 | /* we can have only one retry value for a connection | |
2347 | to a share so for resources mounted more than once | |
2348 | to the same server share the last value passed in | |
2349 | for the retry flag is used */ | |
7586b765 JL |
2350 | tcon->retry = volume_info->retry; |
2351 | tcon->nocase = volume_info->nocase; | |
2352 | tcon->local_lease = volume_info->local_lease; | |
1da177e4 | 2353 | } |
4523cc30 | 2354 | if (pSesInfo) { |
1da177e4 LT |
2355 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
2356 | sb->s_maxbytes = (u64) 1 << 63; | |
2357 | } else | |
2358 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
2359 | } | |
2360 | ||
8af18971 | 2361 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
1da177e4 LT |
2362 | sb->s_time_gran = 100; |
2363 | ||
3b795210 | 2364 | mount_fail_check: |
14fbf50d | 2365 | /* on error free sesinfo and tcon struct if needed */ |
1da177e4 | 2366 | if (rc) { |
e7ddee90 JL |
2367 | /* If find_unc succeeded then rc == 0 so we can not end */ |
2368 | /* up accidently freeing someone elses tcon struct */ | |
2369 | if (tcon) | |
f1987b44 JL |
2370 | cifs_put_tcon(tcon); |
2371 | else if (pSesInfo) | |
14fbf50d JL |
2372 | cifs_put_smb_ses(pSesInfo); |
2373 | else | |
2374 | cifs_put_tcp_session(srvTcp); | |
d82c2df5 SF |
2375 | goto out; |
2376 | } | |
d82c2df5 | 2377 | cifs_sb->tcon = tcon; |
d82c2df5 SF |
2378 | |
2379 | /* do not care if following two calls succeed - informational */ | |
2380 | if (!tcon->ipc) { | |
2381 | CIFSSMBQFSDeviceInfo(xid, tcon); | |
2382 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
2383 | } | |
50c2f753 | 2384 | |
d82c2df5 SF |
2385 | /* tell server which Unix caps we support */ |
2386 | if (tcon->ses->capabilities & CAP_UNIX) | |
2387 | /* reset of caps checks mount to see if unix extensions | |
2388 | disabled for just this mount */ | |
7586b765 | 2389 | reset_cifs_unix_caps(xid, tcon, sb, volume_info); |
d82c2df5 SF |
2390 | else |
2391 | tcon->unix_ext = 0; /* server does not support them */ | |
c18c842b | 2392 | |
d82c2df5 SF |
2393 | /* convert forward to back slashes in prepath here if needed */ |
2394 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0) | |
2395 | convert_delimiter(cifs_sb->prepath, CIFS_DIR_SEP(cifs_sb)); | |
03a143c9 | 2396 | |
d82c2df5 SF |
2397 | if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) { |
2398 | cifs_sb->rsize = 1024 * 127; | |
2399 | cFYI(DBG2, ("no very large read support, rsize now 127K")); | |
1da177e4 | 2400 | } |
d82c2df5 SF |
2401 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
2402 | cifs_sb->wsize = min(cifs_sb->wsize, | |
2403 | (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)); | |
2404 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) | |
2405 | cifs_sb->rsize = min(cifs_sb->rsize, | |
2406 | (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)); | |
1da177e4 | 2407 | |
7586b765 | 2408 | /* volume_info->password is freed above when existing session found |
1da177e4 LT |
2409 | (in which case it is not needed anymore) but when new sesion is created |
2410 | the password ptr is put in the new session structure (in which case the | |
2411 | password will be freed at unmount time) */ | |
70fe7dc0 JL |
2412 | out: |
2413 | /* zero out password before freeing */ | |
7586b765 JL |
2414 | if (volume_info) { |
2415 | if (volume_info->password != NULL) { | |
2416 | memset(volume_info->password, 0, | |
2417 | strlen(volume_info->password)); | |
2418 | kfree(volume_info->password); | |
2419 | } | |
2420 | kfree(volume_info->UNC); | |
2421 | kfree(volume_info->prepath); | |
2422 | kfree(volume_info); | |
70fe7dc0 | 2423 | } |
1da177e4 LT |
2424 | FreeXid(xid); |
2425 | return rc; | |
2426 | } | |
2427 | ||
2428 | static int | |
2429 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 2430 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
2431 | const struct nls_table *nls_codepage) |
2432 | { | |
2433 | struct smb_hdr *smb_buffer; | |
2434 | struct smb_hdr *smb_buffer_response; | |
2435 | SESSION_SETUP_ANDX *pSMB; | |
2436 | SESSION_SETUP_ANDX *pSMBr; | |
2437 | char *bcc_ptr; | |
2438 | char *user; | |
2439 | char *domain; | |
2440 | int rc = 0; | |
2441 | int remaining_words = 0; | |
2442 | int bytes_returned = 0; | |
2443 | int len; | |
2444 | __u32 capabilities; | |
2445 | __u16 count; | |
2446 | ||
eeac8047 | 2447 | cFYI(1, ("In sesssetup")); |
4523cc30 | 2448 | if (ses == NULL) |
1da177e4 LT |
2449 | return -EINVAL; |
2450 | user = ses->userName; | |
2451 | domain = ses->domainName; | |
2452 | smb_buffer = cifs_buf_get(); | |
582d21e5 SF |
2453 | |
2454 | if (smb_buffer == NULL) | |
1da177e4 | 2455 | return -ENOMEM; |
582d21e5 | 2456 | |
1da177e4 LT |
2457 | smb_buffer_response = smb_buffer; |
2458 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2459 | ||
2460 | /* send SMBsessionSetup here */ | |
2461 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2462 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2463 | ||
1982c344 | 2464 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2465 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2466 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2467 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2468 | ||
50c2f753 SF |
2469 | if (ses->server->secMode & |
2470 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
2471 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2472 | ||
2473 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2474 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2475 | if (ses->capabilities & CAP_UNICODE) { | |
2476 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2477 | capabilities |= CAP_UNICODE; | |
2478 | } | |
2479 | if (ses->capabilities & CAP_STATUS32) { | |
2480 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2481 | capabilities |= CAP_STATUS32; | |
2482 | } | |
2483 | if (ses->capabilities & CAP_DFS) { | |
2484 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2485 | capabilities |= CAP_DFS; | |
2486 | } | |
2487 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2488 | ||
50c2f753 | 2489 | pSMB->req_no_secext.CaseInsensitivePasswordLength = |
7c7b25bc | 2490 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2491 | |
2492 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2493 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2494 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2495 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2496 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2497 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2498 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2499 | |
2500 | if (ses->capabilities & CAP_UNICODE) { | |
2501 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2502 | *bcc_ptr = 0; | |
2503 | bcc_ptr++; | |
2504 | } | |
4523cc30 | 2505 | if (user == NULL) |
3979877e | 2506 | bytes_returned = 0; /* skip null user */ |
50c2f753 | 2507 | else |
1da177e4 | 2508 | bytes_returned = |
50c2f753 | 2509 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2510 | nls_codepage); |
2511 | /* convert number of 16 bit words to bytes */ | |
2512 | bcc_ptr += 2 * bytes_returned; | |
2513 | bcc_ptr += 2; /* trailing null */ | |
2514 | if (domain == NULL) | |
2515 | bytes_returned = | |
e89dc920 | 2516 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2517 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2518 | else | |
2519 | bytes_returned = | |
e89dc920 | 2520 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2521 | nls_codepage); |
2522 | bcc_ptr += 2 * bytes_returned; | |
2523 | bcc_ptr += 2; | |
2524 | bytes_returned = | |
e89dc920 | 2525 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2526 | 32, nls_codepage); |
2527 | bcc_ptr += 2 * bytes_returned; | |
2528 | bytes_returned = | |
e9ff3990 | 2529 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, |
1da177e4 LT |
2530 | 32, nls_codepage); |
2531 | bcc_ptr += 2 * bytes_returned; | |
2532 | bcc_ptr += 2; | |
2533 | bytes_returned = | |
e89dc920 | 2534 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2535 | 64, nls_codepage); |
2536 | bcc_ptr += 2 * bytes_returned; | |
2537 | bcc_ptr += 2; | |
2538 | } else { | |
50c2f753 | 2539 | if (user != NULL) { |
1da177e4 LT |
2540 | strncpy(bcc_ptr, user, 200); |
2541 | bcc_ptr += strnlen(user, 200); | |
2542 | } | |
2543 | *bcc_ptr = 0; | |
2544 | bcc_ptr++; | |
2545 | if (domain == NULL) { | |
2546 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2547 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2548 | } else { | |
2549 | strncpy(bcc_ptr, domain, 64); | |
2550 | bcc_ptr += strnlen(domain, 64); | |
2551 | *bcc_ptr = 0; | |
2552 | bcc_ptr++; | |
2553 | } | |
2554 | strcpy(bcc_ptr, "Linux version "); | |
2555 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2556 | strcpy(bcc_ptr, utsname()->release); |
2557 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2558 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2559 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2560 | } | |
2561 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2562 | smb_buffer->smb_buf_length += count; | |
2563 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2564 | ||
2565 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2566 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2567 | if (rc) { |
2568 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2569 | } else if ((smb_buffer_response->WordCount == 3) | |
2570 | || (smb_buffer_response->WordCount == 4)) { | |
2571 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2572 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2573 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2574 | cFYI(1, (" Guest login")); /* BB mark SesInfo struct? */ |
2575 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format | |
2576 | (little endian) */ | |
1da177e4 | 2577 | cFYI(1, ("UID = %d ", ses->Suid)); |
50c2f753 SF |
2578 | /* response can have either 3 or 4 word count - Samba sends 3 */ |
2579 | bcc_ptr = pByteArea(smb_buffer_response); | |
1da177e4 LT |
2580 | if ((pSMBr->resp.hdr.WordCount == 3) |
2581 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2582 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2583 | if (pSMBr->resp.hdr.WordCount == 4) | |
2584 | bcc_ptr += blob_len; | |
2585 | ||
2586 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2587 | if ((long) (bcc_ptr) % 2) { | |
2588 | remaining_words = | |
50c2f753 SF |
2589 | (BCC(smb_buffer_response) - 1) / 2; |
2590 | /* Unicode strings must be word | |
2591 | aligned */ | |
2592 | bcc_ptr++; | |
1da177e4 LT |
2593 | } else { |
2594 | remaining_words = | |
2595 | BCC(smb_buffer_response) / 2; | |
2596 | } | |
2597 | len = | |
2598 | UniStrnlen((wchar_t *) bcc_ptr, | |
2599 | remaining_words - 1); | |
2600 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2601 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2602 | terminating last Unicode string in response */ | |
fb8c4b14 | 2603 | if (ses->serverOS) |
a424f8bf | 2604 | kfree(ses->serverOS); |
50c2f753 SF |
2605 | ses->serverOS = kzalloc(2 * (len + 1), |
2606 | GFP_KERNEL); | |
fb8c4b14 | 2607 | if (ses->serverOS == NULL) |
433dc24f | 2608 | goto sesssetup_nomem; |
1da177e4 | 2609 | cifs_strfromUCS_le(ses->serverOS, |
50c2f753 SF |
2610 | (__le16 *)bcc_ptr, |
2611 | len, nls_codepage); | |
1da177e4 LT |
2612 | bcc_ptr += 2 * (len + 1); |
2613 | remaining_words -= len + 1; | |
2614 | ses->serverOS[2 * len] = 0; | |
2615 | ses->serverOS[1 + (2 * len)] = 0; | |
2616 | if (remaining_words > 0) { | |
2617 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2618 | remaining_words-1); | |
cd49b492 | 2619 | kfree(ses->serverNOS); |
50c2f753 SF |
2620 | ses->serverNOS = kzalloc(2 * (len + 1), |
2621 | GFP_KERNEL); | |
fb8c4b14 | 2622 | if (ses->serverNOS == NULL) |
433dc24f | 2623 | goto sesssetup_nomem; |
1da177e4 | 2624 | cifs_strfromUCS_le(ses->serverNOS, |
50c2f753 SF |
2625 | (__le16 *)bcc_ptr, |
2626 | len, nls_codepage); | |
1da177e4 LT |
2627 | bcc_ptr += 2 * (len + 1); |
2628 | ses->serverNOS[2 * len] = 0; | |
2629 | ses->serverNOS[1 + (2 * len)] = 0; | |
fb8c4b14 | 2630 | if (strncmp(ses->serverNOS, |
50c2f753 | 2631 | "NT LAN Manager 4", 16) == 0) { |
467a8f8d | 2632 | cFYI(1, ("NT4 server")); |
1da177e4 LT |
2633 | ses->flags |= CIFS_SES_NT4; |
2634 | } | |
2635 | remaining_words -= len + 1; | |
2636 | if (remaining_words > 0) { | |
433dc24f | 2637 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
50c2f753 SF |
2638 | /* last string is not always null terminated |
2639 | (for e.g. for Windows XP & 2000) */ | |
fb8c4b14 | 2640 | if (ses->serverDomain) |
a424f8bf | 2641 | kfree(ses->serverDomain); |
1da177e4 | 2642 | ses->serverDomain = |
50c2f753 SF |
2643 | kzalloc(2*(len+1), |
2644 | GFP_KERNEL); | |
fb8c4b14 | 2645 | if (ses->serverDomain == NULL) |
433dc24f | 2646 | goto sesssetup_nomem; |
1da177e4 | 2647 | cifs_strfromUCS_le(ses->serverDomain, |
50c2f753 SF |
2648 | (__le16 *)bcc_ptr, |
2649 | len, nls_codepage); | |
1da177e4 LT |
2650 | bcc_ptr += 2 * (len + 1); |
2651 | ses->serverDomain[2*len] = 0; | |
2652 | ses->serverDomain[1+(2*len)] = 0; | |
50c2f753 SF |
2653 | } else { /* else no more room so create |
2654 | dummy domain string */ | |
fb8c4b14 | 2655 | if (ses->serverDomain) |
a424f8bf | 2656 | kfree(ses->serverDomain); |
50c2f753 | 2657 | ses->serverDomain = |
e915fc49 | 2658 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2659 | } |
50c2f753 SF |
2660 | } else { /* no room so create dummy domain |
2661 | and NOS string */ | |
2662 | ||
433dc24f SF |
2663 | /* if these kcallocs fail not much we |
2664 | can do, but better to not fail the | |
2665 | sesssetup itself */ | |
cd49b492 | 2666 | kfree(ses->serverDomain); |
1da177e4 | 2667 | ses->serverDomain = |
e915fc49 | 2668 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2669 | kfree(ses->serverNOS); |
1da177e4 | 2670 | ses->serverNOS = |
e915fc49 | 2671 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2672 | } |
2673 | } else { /* ASCII */ | |
2674 | len = strnlen(bcc_ptr, 1024); | |
2675 | if (((long) bcc_ptr + len) - (long) | |
2676 | pByteArea(smb_buffer_response) | |
2677 | <= BCC(smb_buffer_response)) { | |
cd49b492 | 2678 | kfree(ses->serverOS); |
50c2f753 SF |
2679 | ses->serverOS = kzalloc(len + 1, |
2680 | GFP_KERNEL); | |
fb8c4b14 | 2681 | if (ses->serverOS == NULL) |
433dc24f | 2682 | goto sesssetup_nomem; |
50c2f753 | 2683 | strncpy(ses->serverOS, bcc_ptr, len); |
1da177e4 LT |
2684 | |
2685 | bcc_ptr += len; | |
50c2f753 SF |
2686 | /* null terminate the string */ |
2687 | bcc_ptr[0] = 0; | |
1da177e4 LT |
2688 | bcc_ptr++; |
2689 | ||
2690 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2691 | kfree(ses->serverNOS); |
50c2f753 SF |
2692 | ses->serverNOS = kzalloc(len + 1, |
2693 | GFP_KERNEL); | |
fb8c4b14 | 2694 | if (ses->serverNOS == NULL) |
433dc24f | 2695 | goto sesssetup_nomem; |
1da177e4 LT |
2696 | strncpy(ses->serverNOS, bcc_ptr, len); |
2697 | bcc_ptr += len; | |
2698 | bcc_ptr[0] = 0; | |
2699 | bcc_ptr++; | |
2700 | ||
2701 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 2702 | if (ses->serverDomain) |
a424f8bf | 2703 | kfree(ses->serverDomain); |
50c2f753 SF |
2704 | ses->serverDomain = kzalloc(len + 1, |
2705 | GFP_KERNEL); | |
fb8c4b14 | 2706 | if (ses->serverDomain == NULL) |
433dc24f | 2707 | goto sesssetup_nomem; |
50c2f753 SF |
2708 | strncpy(ses->serverDomain, bcc_ptr, |
2709 | len); | |
1da177e4 LT |
2710 | bcc_ptr += len; |
2711 | bcc_ptr[0] = 0; | |
2712 | bcc_ptr++; | |
2713 | } else | |
2714 | cFYI(1, | |
50c2f753 SF |
2715 | ("Variable field of length %d " |
2716 | "extends beyond end of smb ", | |
1da177e4 LT |
2717 | len)); |
2718 | } | |
2719 | } else { | |
2720 | cERROR(1, | |
50c2f753 SF |
2721 | (" Security Blob Length extends beyond " |
2722 | "end of SMB")); | |
1da177e4 LT |
2723 | } |
2724 | } else { | |
2725 | cERROR(1, | |
2726 | (" Invalid Word count %d: ", | |
2727 | smb_buffer_response->WordCount)); | |
2728 | rc = -EIO; | |
2729 | } | |
433dc24f SF |
2730 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2731 | since that could make reconnection harder, and | |
2732 | reconnection might be needed to free memory */ | |
a8a11d39 | 2733 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2734 | |
2735 | return rc; | |
2736 | } | |
2737 | ||
1da177e4 LT |
2738 | static int |
2739 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
4b18f2a9 | 2740 | struct cifsSesInfo *ses, bool *pNTLMv2_flag, |
1da177e4 LT |
2741 | const struct nls_table *nls_codepage) |
2742 | { | |
2743 | struct smb_hdr *smb_buffer; | |
2744 | struct smb_hdr *smb_buffer_response; | |
2745 | SESSION_SETUP_ANDX *pSMB; | |
2746 | SESSION_SETUP_ANDX *pSMBr; | |
2747 | char *bcc_ptr; | |
2748 | char *domain; | |
2749 | int rc = 0; | |
2750 | int remaining_words = 0; | |
2751 | int bytes_returned = 0; | |
2752 | int len; | |
6345a3a8 | 2753 | int SecurityBlobLength = sizeof(NEGOTIATE_MESSAGE); |
1da177e4 LT |
2754 | PNEGOTIATE_MESSAGE SecurityBlob; |
2755 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2756 | __u32 negotiate_flags, capabilities; | |
2757 | __u16 count; | |
2758 | ||
12b3b8ff | 2759 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
fb8c4b14 | 2760 | if (ses == NULL) |
1da177e4 LT |
2761 | return -EINVAL; |
2762 | domain = ses->domainName; | |
4b18f2a9 | 2763 | *pNTLMv2_flag = false; |
1da177e4 LT |
2764 | smb_buffer = cifs_buf_get(); |
2765 | if (smb_buffer == NULL) { | |
2766 | return -ENOMEM; | |
2767 | } | |
2768 | smb_buffer_response = smb_buffer; | |
2769 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2770 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2771 | ||
2772 | /* send SMBsessionSetup here */ | |
2773 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2774 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2775 | |
2776 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2777 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2778 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2779 | ||
2780 | pSMB->req.AndXCommand = 0xFF; | |
2781 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2782 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2783 | ||
fb8c4b14 | 2784 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2785 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2786 | ||
2787 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2788 | CAP_EXTENDED_SECURITY; | |
2789 | if (ses->capabilities & CAP_UNICODE) { | |
2790 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2791 | capabilities |= CAP_UNICODE; | |
2792 | } | |
2793 | if (ses->capabilities & CAP_STATUS32) { | |
2794 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2795 | capabilities |= CAP_STATUS32; | |
2796 | } | |
2797 | if (ses->capabilities & CAP_DFS) { | |
2798 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2799 | capabilities |= CAP_DFS; | |
2800 | } | |
2801 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2802 | ||
2803 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2804 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2805 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2806 | SecurityBlob->MessageType = NtLmNegotiate; | |
2807 | negotiate_flags = | |
2808 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2809 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2810 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 | 2811 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
fb8c4b14 | 2812 | if (sign_CIFS_PDUs) |
1da177e4 | 2813 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 2814 | /* if (ntlmv2_support) |
3979877e | 2815 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ |
1da177e4 LT |
2816 | /* setup pointers to domain name and workstation name */ |
2817 | bcc_ptr += SecurityBlobLength; | |
2818 | ||
2819 | SecurityBlob->WorkstationName.Buffer = 0; | |
2820 | SecurityBlob->WorkstationName.Length = 0; | |
2821 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2822 | ||
12b3b8ff SF |
2823 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2824 | along with username on auth request (ie the response to challenge) */ | |
2825 | SecurityBlob->DomainName.Buffer = 0; | |
2826 | SecurityBlob->DomainName.Length = 0; | |
2827 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2828 | if (ses->capabilities & CAP_UNICODE) { |
2829 | if ((long) bcc_ptr % 2) { | |
2830 | *bcc_ptr = 0; | |
2831 | bcc_ptr++; | |
2832 | } | |
2833 | ||
2834 | bytes_returned = | |
e89dc920 | 2835 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2836 | 32, nls_codepage); |
2837 | bcc_ptr += 2 * bytes_returned; | |
2838 | bytes_returned = | |
e9ff3990 | 2839 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2840 | nls_codepage); |
2841 | bcc_ptr += 2 * bytes_returned; | |
2842 | bcc_ptr += 2; /* null terminate Linux version */ | |
2843 | bytes_returned = | |
e89dc920 | 2844 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2845 | 64, nls_codepage); |
2846 | bcc_ptr += 2 * bytes_returned; | |
2847 | *(bcc_ptr + 1) = 0; | |
2848 | *(bcc_ptr + 2) = 0; | |
2849 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2850 | *(bcc_ptr + 1) = 0; | |
2851 | *(bcc_ptr + 2) = 0; | |
2852 | bcc_ptr += 2; /* null domain */ | |
2853 | } else { /* ASCII */ | |
2854 | strcpy(bcc_ptr, "Linux version "); | |
2855 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2856 | strcpy(bcc_ptr, utsname()->release); |
2857 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2858 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2859 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2860 | bcc_ptr++; /* empty domain field */ | |
2861 | *bcc_ptr = 0; | |
2862 | } | |
2863 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2864 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2865 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2866 | smb_buffer->smb_buf_length += count; | |
2867 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2868 | ||
2869 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2870 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2871 | |
2872 | if (smb_buffer_response->Status.CifsError == | |
2873 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2874 | rc = 0; | |
2875 | ||
2876 | if (rc) { | |
2877 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2878 | } else if ((smb_buffer_response->WordCount == 3) | |
2879 | || (smb_buffer_response->WordCount == 4)) { | |
2880 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2881 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2882 | ||
2883 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2884 | cFYI(1, (" Guest login")); |
2885 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
1da177e4 | 2886 | |
50c2f753 SF |
2887 | bcc_ptr = pByteArea(smb_buffer_response); |
2888 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
2889 | |
2890 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2891 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2892 | cFYI(1, | |
2893 | ("Unexpected NTLMSSP message type received %d", | |
2894 | SecurityBlob2->MessageType)); | |
2895 | } else if (ses) { | |
50c2f753 | 2896 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ |
12b3b8ff | 2897 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2898 | if ((pSMBr->resp.hdr.WordCount == 3) |
2899 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2900 | && (blob_len < | |
2901 | pSMBr->resp.ByteCount))) { | |
2902 | ||
2903 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2904 | bcc_ptr += blob_len; | |
12b3b8ff | 2905 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2906 | blob_len)); |
2907 | } | |
2908 | ||
12b3b8ff | 2909 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2910 | |
2911 | memcpy(ses->server->cryptKey, | |
2912 | SecurityBlob2->Challenge, | |
2913 | CIFS_CRYPTO_KEY_SIZE); | |
50c2f753 | 2914 | if (SecurityBlob2->NegotiateFlags & |
12b3b8ff | 2915 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) |
4b18f2a9 | 2916 | *pNTLMv2_flag = true; |
1da177e4 | 2917 | |
50c2f753 SF |
2918 | if ((SecurityBlob2->NegotiateFlags & |
2919 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
1da177e4 | 2920 | || (sign_CIFS_PDUs > 1)) |
50c2f753 SF |
2921 | ses->server->secMode |= |
2922 | SECMODE_SIGN_REQUIRED; | |
2923 | if ((SecurityBlob2->NegotiateFlags & | |
1da177e4 | 2924 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) |
50c2f753 | 2925 | ses->server->secMode |= |
1da177e4 LT |
2926 | SECMODE_SIGN_ENABLED; |
2927 | ||
2928 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2929 | if ((long) (bcc_ptr) % 2) { | |
2930 | remaining_words = | |
2931 | (BCC(smb_buffer_response) | |
2932 | - 1) / 2; | |
50c2f753 SF |
2933 | /* Must word align unicode strings */ |
2934 | bcc_ptr++; | |
1da177e4 LT |
2935 | } else { |
2936 | remaining_words = | |
2937 | BCC | |
2938 | (smb_buffer_response) / 2; | |
2939 | } | |
2940 | len = | |
2941 | UniStrnlen((wchar_t *) bcc_ptr, | |
2942 | remaining_words - 1); | |
2943 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2944 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2945 | terminating last Unicode string in response */ | |
fb8c4b14 | 2946 | if (ses->serverOS) |
a424f8bf | 2947 | kfree(ses->serverOS); |
1da177e4 | 2948 | ses->serverOS = |
e915fc49 | 2949 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2950 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2951 | (__le16 *) |
1da177e4 LT |
2952 | bcc_ptr, len, |
2953 | nls_codepage); | |
2954 | bcc_ptr += 2 * (len + 1); | |
2955 | remaining_words -= len + 1; | |
2956 | ses->serverOS[2 * len] = 0; | |
2957 | ses->serverOS[1 + (2 * len)] = 0; | |
2958 | if (remaining_words > 0) { | |
2959 | len = UniStrnlen((wchar_t *) | |
2960 | bcc_ptr, | |
2961 | remaining_words | |
2962 | - 1); | |
cd49b492 | 2963 | kfree(ses->serverNOS); |
1da177e4 | 2964 | ses->serverNOS = |
e915fc49 | 2965 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2966 | GFP_KERNEL); |
2967 | cifs_strfromUCS_le(ses-> | |
2968 | serverNOS, | |
e89dc920 | 2969 | (__le16 *) |
1da177e4 LT |
2970 | bcc_ptr, |
2971 | len, | |
2972 | nls_codepage); | |
2973 | bcc_ptr += 2 * (len + 1); | |
2974 | ses->serverNOS[2 * len] = 0; | |
2975 | ses->serverNOS[1 + | |
2976 | (2 * len)] = 0; | |
2977 | remaining_words -= len + 1; | |
2978 | if (remaining_words > 0) { | |
50c2f753 SF |
2979 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
2980 | /* last string not always null terminated | |
2981 | (for e.g. for Windows XP & 2000) */ | |
cd49b492 | 2982 | kfree(ses->serverDomain); |
1da177e4 | 2983 | ses->serverDomain = |
e915fc49 | 2984 | kzalloc(2 * |
1da177e4 LT |
2985 | (len + |
2986 | 1), | |
2987 | GFP_KERNEL); | |
2988 | cifs_strfromUCS_le | |
e89dc920 SF |
2989 | (ses->serverDomain, |
2990 | (__le16 *)bcc_ptr, | |
2991 | len, nls_codepage); | |
1da177e4 LT |
2992 | bcc_ptr += |
2993 | 2 * (len + 1); | |
e89dc920 | 2994 | ses->serverDomain[2*len] |
1da177e4 | 2995 | = 0; |
e89dc920 SF |
2996 | ses->serverDomain |
2997 | [1 + (2 * len)] | |
1da177e4 LT |
2998 | = 0; |
2999 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 3000 | else { |
cd49b492 | 3001 | kfree(ses->serverDomain); |
1da177e4 | 3002 | ses->serverDomain = |
e915fc49 | 3003 | kzalloc(2, |
1da177e4 | 3004 | GFP_KERNEL); |
a424f8bf | 3005 | } |
1da177e4 | 3006 | } else { /* no room so create dummy domain and NOS string */ |
cd49b492 | 3007 | kfree(ses->serverDomain); |
1da177e4 | 3008 | ses->serverDomain = |
e915fc49 | 3009 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 3010 | kfree(ses->serverNOS); |
1da177e4 | 3011 | ses->serverNOS = |
e915fc49 | 3012 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3013 | } |
3014 | } else { /* ASCII */ | |
3015 | len = strnlen(bcc_ptr, 1024); | |
3016 | if (((long) bcc_ptr + len) - (long) | |
3017 | pByteArea(smb_buffer_response) | |
3018 | <= BCC(smb_buffer_response)) { | |
fb8c4b14 | 3019 | if (ses->serverOS) |
a424f8bf | 3020 | kfree(ses->serverOS); |
1da177e4 | 3021 | ses->serverOS = |
e915fc49 | 3022 | kzalloc(len + 1, |
1da177e4 LT |
3023 | GFP_KERNEL); |
3024 | strncpy(ses->serverOS, | |
3025 | bcc_ptr, len); | |
3026 | ||
3027 | bcc_ptr += len; | |
3028 | bcc_ptr[0] = 0; /* null terminate string */ | |
3029 | bcc_ptr++; | |
3030 | ||
3031 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3032 | kfree(ses->serverNOS); |
1da177e4 | 3033 | ses->serverNOS = |
e915fc49 | 3034 | kzalloc(len + 1, |
1da177e4 LT |
3035 | GFP_KERNEL); |
3036 | strncpy(ses->serverNOS, bcc_ptr, len); | |
3037 | bcc_ptr += len; | |
3038 | bcc_ptr[0] = 0; | |
3039 | bcc_ptr++; | |
3040 | ||
3041 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3042 | kfree(ses->serverDomain); |
1da177e4 | 3043 | ses->serverDomain = |
e915fc49 | 3044 | kzalloc(len + 1, |
1da177e4 | 3045 | GFP_KERNEL); |
50c2f753 SF |
3046 | strncpy(ses->serverDomain, |
3047 | bcc_ptr, len); | |
1da177e4 LT |
3048 | bcc_ptr += len; |
3049 | bcc_ptr[0] = 0; | |
3050 | bcc_ptr++; | |
3051 | } else | |
3052 | cFYI(1, | |
63135e08 SF |
3053 | ("field of length %d " |
3054 | "extends beyond end of smb", | |
1da177e4 LT |
3055 | len)); |
3056 | } | |
3057 | } else { | |
50c2f753 SF |
3058 | cERROR(1, ("Security Blob Length extends beyond" |
3059 | " end of SMB")); | |
1da177e4 LT |
3060 | } |
3061 | } else { | |
3062 | cERROR(1, ("No session structure passed in.")); | |
3063 | } | |
3064 | } else { | |
3065 | cERROR(1, | |
5815449d | 3066 | (" Invalid Word count %d:", |
1da177e4 LT |
3067 | smb_buffer_response->WordCount)); |
3068 | rc = -EIO; | |
3069 | } | |
3070 | ||
a8a11d39 | 3071 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3072 | |
3073 | return rc; | |
3074 | } | |
3075 | static int | |
3076 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
4b18f2a9 | 3077 | char *ntlm_session_key, bool ntlmv2_flag, |
6345a3a8 | 3078 | const struct nls_table *nls_codepage) |
1da177e4 LT |
3079 | { |
3080 | struct smb_hdr *smb_buffer; | |
3081 | struct smb_hdr *smb_buffer_response; | |
3082 | SESSION_SETUP_ANDX *pSMB; | |
3083 | SESSION_SETUP_ANDX *pSMBr; | |
3084 | char *bcc_ptr; | |
3085 | char *user; | |
3086 | char *domain; | |
3087 | int rc = 0; | |
3088 | int remaining_words = 0; | |
3089 | int bytes_returned = 0; | |
3090 | int len; | |
6345a3a8 | 3091 | int SecurityBlobLength = sizeof(AUTHENTICATE_MESSAGE); |
1da177e4 LT |
3092 | PAUTHENTICATE_MESSAGE SecurityBlob; |
3093 | __u32 negotiate_flags, capabilities; | |
3094 | __u16 count; | |
3095 | ||
3096 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
fb8c4b14 | 3097 | if (ses == NULL) |
1da177e4 LT |
3098 | return -EINVAL; |
3099 | user = ses->userName; | |
3100 | domain = ses->domainName; | |
3101 | smb_buffer = cifs_buf_get(); | |
3102 | if (smb_buffer == NULL) { | |
3103 | return -ENOMEM; | |
3104 | } | |
3105 | smb_buffer_response = smb_buffer; | |
6345a3a8 CG |
3106 | pSMB = (SESSION_SETUP_ANDX *)smb_buffer; |
3107 | pSMBr = (SESSION_SETUP_ANDX *)smb_buffer_response; | |
1da177e4 LT |
3108 | |
3109 | /* send SMBsessionSetup here */ | |
3110 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
3111 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
3112 | |
3113 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3114 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
3115 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
3116 | pSMB->req.AndXCommand = 0xFF; | |
3117 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
3118 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
3119 | ||
3120 | pSMB->req.hdr.Uid = ses->Suid; | |
3121 | ||
fb8c4b14 | 3122 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3123 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3124 | ||
3125 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
6345a3a8 | 3126 | CAP_EXTENDED_SECURITY; |
1da177e4 LT |
3127 | if (ses->capabilities & CAP_UNICODE) { |
3128 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3129 | capabilities |= CAP_UNICODE; | |
3130 | } | |
3131 | if (ses->capabilities & CAP_STATUS32) { | |
3132 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3133 | capabilities |= CAP_STATUS32; | |
3134 | } | |
3135 | if (ses->capabilities & CAP_DFS) { | |
3136 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3137 | capabilities |= CAP_DFS; | |
3138 | } | |
3139 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
3140 | ||
6345a3a8 CG |
3141 | bcc_ptr = (char *)&pSMB->req.SecurityBlob; |
3142 | SecurityBlob = (PAUTHENTICATE_MESSAGE)bcc_ptr; | |
1da177e4 LT |
3143 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); |
3144 | SecurityBlob->MessageType = NtLmAuthenticate; | |
3145 | bcc_ptr += SecurityBlobLength; | |
6345a3a8 CG |
3146 | negotiate_flags = NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | |
3147 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
3148 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
fb8c4b14 | 3149 | if (sign_CIFS_PDUs) |
1da177e4 | 3150 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 3151 | if (ntlmv2_flag) |
1da177e4 LT |
3152 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; |
3153 | ||
3154 | /* setup pointers to domain name and workstation name */ | |
3155 | ||
3156 | SecurityBlob->WorkstationName.Buffer = 0; | |
3157 | SecurityBlob->WorkstationName.Length = 0; | |
3158 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
3159 | SecurityBlob->SessionKey.Length = 0; | |
3160 | SecurityBlob->SessionKey.MaximumLength = 0; | |
3161 | SecurityBlob->SessionKey.Buffer = 0; | |
3162 | ||
3163 | SecurityBlob->LmChallengeResponse.Length = 0; | |
3164 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
3165 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
3166 | ||
3167 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 3168 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 3169 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
3170 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
3171 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
3172 | SecurityBlob->NtChallengeResponse.Buffer = |
3173 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
3174 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
3175 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
3176 | |
3177 | if (ses->capabilities & CAP_UNICODE) { | |
3178 | if (domain == NULL) { | |
3179 | SecurityBlob->DomainName.Buffer = 0; | |
3180 | SecurityBlob->DomainName.Length = 0; | |
3181 | SecurityBlob->DomainName.MaximumLength = 0; | |
3182 | } else { | |
77159b4d | 3183 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 | 3184 | nls_codepage); |
77159b4d | 3185 | ln *= 2; |
1da177e4 | 3186 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3187 | cpu_to_le16(ln); |
1da177e4 LT |
3188 | SecurityBlob->DomainName.Buffer = |
3189 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3190 | bcc_ptr += ln; |
3191 | SecurityBlobLength += ln; | |
3192 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3193 | } |
3194 | if (user == NULL) { | |
3195 | SecurityBlob->UserName.Buffer = 0; | |
3196 | SecurityBlob->UserName.Length = 0; | |
3197 | SecurityBlob->UserName.MaximumLength = 0; | |
3198 | } else { | |
77159b4d | 3199 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 | 3200 | nls_codepage); |
77159b4d | 3201 | ln *= 2; |
1da177e4 | 3202 | SecurityBlob->UserName.MaximumLength = |
77159b4d | 3203 | cpu_to_le16(ln); |
1da177e4 LT |
3204 | SecurityBlob->UserName.Buffer = |
3205 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3206 | bcc_ptr += ln; |
3207 | SecurityBlobLength += ln; | |
3208 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3209 | } |
3210 | ||
63135e08 SF |
3211 | /* SecurityBlob->WorkstationName.Length = |
3212 | cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); | |
1da177e4 | 3213 | SecurityBlob->WorkstationName.Length *= 2; |
63135e08 SF |
3214 | SecurityBlob->WorkstationName.MaximumLength = |
3215 | cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
3216 | SecurityBlob->WorkstationName.Buffer = | |
3217 | cpu_to_le32(SecurityBlobLength); | |
1da177e4 LT |
3218 | bcc_ptr += SecurityBlob->WorkstationName.Length; |
3219 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
63135e08 SF |
3220 | SecurityBlob->WorkstationName.Length = |
3221 | cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
1da177e4 LT |
3222 | |
3223 | if ((long) bcc_ptr % 2) { | |
3224 | *bcc_ptr = 0; | |
3225 | bcc_ptr++; | |
3226 | } | |
3227 | bytes_returned = | |
e89dc920 | 3228 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
3229 | 32, nls_codepage); |
3230 | bcc_ptr += 2 * bytes_returned; | |
3231 | bytes_returned = | |
e9ff3990 | 3232 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
3233 | nls_codepage); |
3234 | bcc_ptr += 2 * bytes_returned; | |
3235 | bcc_ptr += 2; /* null term version string */ | |
3236 | bytes_returned = | |
e89dc920 | 3237 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
3238 | 64, nls_codepage); |
3239 | bcc_ptr += 2 * bytes_returned; | |
3240 | *(bcc_ptr + 1) = 0; | |
3241 | *(bcc_ptr + 2) = 0; | |
3242 | bcc_ptr += 2; /* null terminate network opsys string */ | |
3243 | *(bcc_ptr + 1) = 0; | |
3244 | *(bcc_ptr + 2) = 0; | |
3245 | bcc_ptr += 2; /* null domain */ | |
3246 | } else { /* ASCII */ | |
3247 | if (domain == NULL) { | |
3248 | SecurityBlob->DomainName.Buffer = 0; | |
3249 | SecurityBlob->DomainName.Length = 0; | |
3250 | SecurityBlob->DomainName.MaximumLength = 0; | |
3251 | } else { | |
77159b4d | 3252 | __u16 ln; |
1da177e4 LT |
3253 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; |
3254 | strncpy(bcc_ptr, domain, 63); | |
77159b4d | 3255 | ln = strnlen(domain, 64); |
1da177e4 | 3256 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3257 | cpu_to_le16(ln); |
1da177e4 LT |
3258 | SecurityBlob->DomainName.Buffer = |
3259 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3260 | bcc_ptr += ln; |
3261 | SecurityBlobLength += ln; | |
3262 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3263 | } |
3264 | if (user == NULL) { | |
3265 | SecurityBlob->UserName.Buffer = 0; | |
3266 | SecurityBlob->UserName.Length = 0; | |
3267 | SecurityBlob->UserName.MaximumLength = 0; | |
3268 | } else { | |
77159b4d | 3269 | __u16 ln; |
1da177e4 | 3270 | strncpy(bcc_ptr, user, 63); |
77159b4d SF |
3271 | ln = strnlen(user, 64); |
3272 | SecurityBlob->UserName.MaximumLength = cpu_to_le16(ln); | |
1da177e4 | 3273 | SecurityBlob->UserName.Buffer = |
77159b4d SF |
3274 | cpu_to_le32(SecurityBlobLength); |
3275 | bcc_ptr += ln; | |
3276 | SecurityBlobLength += ln; | |
3277 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3278 | } |
3279 | /* BB fill in our workstation name if known BB */ | |
3280 | ||
3281 | strcpy(bcc_ptr, "Linux version "); | |
3282 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
3283 | strcpy(bcc_ptr, utsname()->release); |
3284 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
3285 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
3286 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
3287 | bcc_ptr++; /* null domain */ | |
3288 | *bcc_ptr = 0; | |
3289 | } | |
3290 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
3291 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
3292 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
3293 | smb_buffer->smb_buf_length += count; | |
3294 | pSMB->req.ByteCount = cpu_to_le16(count); | |
3295 | ||
3296 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 3297 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 | 3298 | if (rc) { |
6345a3a8 CG |
3299 | /* rc = map_smb_to_linux_error(smb_buffer_response) done in SendReceive now */ |
3300 | } else if ((smb_buffer_response->WordCount == 3) || | |
3301 | (smb_buffer_response->WordCount == 4)) { | |
1da177e4 | 3302 | __u16 action = le16_to_cpu(pSMBr->resp.Action); |
6345a3a8 | 3303 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); |
1da177e4 | 3304 | if (action & GUEST_LOGIN) |
50c2f753 SF |
3305 | cFYI(1, (" Guest login")); /* BB Should we set anything |
3306 | in SesInfo struct ? */ | |
3307 | /* if (SecurityBlob2->MessageType != NtLm??) { | |
3308 | cFYI("Unexpected message type on auth response is %d")); | |
3309 | } */ | |
3310 | ||
1da177e4 LT |
3311 | if (ses) { |
3312 | cFYI(1, | |
50c2f753 | 3313 | ("Check challenge UID %d vs auth response UID %d", |
1da177e4 | 3314 | ses->Suid, smb_buffer_response->Uid)); |
50c2f753 SF |
3315 | /* UID left in wire format */ |
3316 | ses->Suid = smb_buffer_response->Uid; | |
3317 | bcc_ptr = pByteArea(smb_buffer_response); | |
3318 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
3319 | if ((pSMBr->resp.hdr.WordCount == 3) |
3320 | || ((pSMBr->resp.hdr.WordCount == 4) | |
3321 | && (blob_len < | |
3322 | pSMBr->resp.ByteCount))) { | |
3323 | if (pSMBr->resp.hdr.WordCount == 4) { | |
3324 | bcc_ptr += | |
3325 | blob_len; | |
3326 | cFYI(1, | |
3327 | ("Security Blob Length %d ", | |
3328 | blob_len)); | |
3329 | } | |
3330 | ||
3331 | cFYI(1, | |
3332 | ("NTLMSSP response to Authenticate ")); | |
3333 | ||
3334 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3335 | if ((long) (bcc_ptr) % 2) { | |
3336 | remaining_words = | |
3337 | (BCC(smb_buffer_response) | |
3338 | - 1) / 2; | |
3339 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
3340 | } else { | |
3341 | remaining_words = BCC(smb_buffer_response) / 2; | |
3342 | } | |
77159b4d SF |
3343 | len = UniStrnlen((wchar_t *) bcc_ptr, |
3344 | remaining_words - 1); | |
1da177e4 LT |
3345 | /* We look for obvious messed up bcc or strings in response so we do not go off |
3346 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
3347 | terminating last Unicode string in response */ | |
fb8c4b14 | 3348 | if (ses->serverOS) |
08775834 | 3349 | kfree(ses->serverOS); |
1da177e4 | 3350 | ses->serverOS = |
e915fc49 | 3351 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 3352 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 3353 | (__le16 *) |
1da177e4 LT |
3354 | bcc_ptr, len, |
3355 | nls_codepage); | |
3356 | bcc_ptr += 2 * (len + 1); | |
3357 | remaining_words -= len + 1; | |
3358 | ses->serverOS[2 * len] = 0; | |
3359 | ses->serverOS[1 + (2 * len)] = 0; | |
3360 | if (remaining_words > 0) { | |
3361 | len = UniStrnlen((wchar_t *) | |
3362 | bcc_ptr, | |
3363 | remaining_words | |
3364 | - 1); | |
cd49b492 | 3365 | kfree(ses->serverNOS); |
1da177e4 | 3366 | ses->serverNOS = |
e915fc49 | 3367 | kzalloc(2 * (len + 1), |
1da177e4 LT |
3368 | GFP_KERNEL); |
3369 | cifs_strfromUCS_le(ses-> | |
3370 | serverNOS, | |
e89dc920 | 3371 | (__le16 *) |
1da177e4 LT |
3372 | bcc_ptr, |
3373 | len, | |
3374 | nls_codepage); | |
3375 | bcc_ptr += 2 * (len + 1); | |
3376 | ses->serverNOS[2 * len] = 0; | |
3377 | ses->serverNOS[1+(2*len)] = 0; | |
3378 | remaining_words -= len + 1; | |
3379 | if (remaining_words > 0) { | |
50c2f753 | 3380 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 3381 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ |
fb8c4b14 | 3382 | if (ses->serverDomain) |
a424f8bf | 3383 | kfree(ses->serverDomain); |
1da177e4 | 3384 | ses->serverDomain = |
e915fc49 | 3385 | kzalloc(2 * |
1da177e4 LT |
3386 | (len + |
3387 | 1), | |
3388 | GFP_KERNEL); | |
3389 | cifs_strfromUCS_le | |
3390 | (ses-> | |
3391 | serverDomain, | |
e89dc920 | 3392 | (__le16 *) |
1da177e4 LT |
3393 | bcc_ptr, len, |
3394 | nls_codepage); | |
3395 | bcc_ptr += | |
3396 | 2 * (len + 1); | |
3397 | ses-> | |
3398 | serverDomain[2 | |
3399 | * len] | |
3400 | = 0; | |
3401 | ses-> | |
3402 | serverDomain[1 | |
3403 | + | |
3404 | (2 | |
3405 | * | |
3406 | len)] | |
3407 | = 0; | |
3408 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 3409 | else { |
fb8c4b14 | 3410 | if (ses->serverDomain) |
a424f8bf | 3411 | kfree(ses->serverDomain); |
e915fc49 | 3412 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 3413 | } |
1da177e4 | 3414 | } else { /* no room so create dummy domain and NOS string */ |
fb8c4b14 | 3415 | if (ses->serverDomain) |
a424f8bf | 3416 | kfree(ses->serverDomain); |
e915fc49 | 3417 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 3418 | kfree(ses->serverNOS); |
e915fc49 | 3419 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3420 | } |
3421 | } else { /* ASCII */ | |
3422 | len = strnlen(bcc_ptr, 1024); | |
50c2f753 SF |
3423 | if (((long) bcc_ptr + len) - |
3424 | (long) pByteArea(smb_buffer_response) | |
63135e08 | 3425 | <= BCC(smb_buffer_response)) { |
fb8c4b14 | 3426 | if (ses->serverOS) |
a424f8bf | 3427 | kfree(ses->serverOS); |
77159b4d | 3428 | ses->serverOS = kzalloc(len + 1, GFP_KERNEL); |
1da177e4 LT |
3429 | strncpy(ses->serverOS,bcc_ptr, len); |
3430 | ||
3431 | bcc_ptr += len; | |
3432 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3433 | bcc_ptr++; | |
3434 | ||
3435 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3436 | kfree(ses->serverNOS); |
50c2f753 SF |
3437 | ses->serverNOS = kzalloc(len+1, |
3438 | GFP_KERNEL); | |
63135e08 SF |
3439 | strncpy(ses->serverNOS, |
3440 | bcc_ptr, len); | |
1da177e4 LT |
3441 | bcc_ptr += len; |
3442 | bcc_ptr[0] = 0; | |
3443 | bcc_ptr++; | |
3444 | ||
3445 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 3446 | if (ses->serverDomain) |
a424f8bf | 3447 | kfree(ses->serverDomain); |
63135e08 SF |
3448 | ses->serverDomain = |
3449 | kzalloc(len+1, | |
3450 | GFP_KERNEL); | |
3451 | strncpy(ses->serverDomain, | |
3452 | bcc_ptr, len); | |
1da177e4 LT |
3453 | bcc_ptr += len; |
3454 | bcc_ptr[0] = 0; | |
3455 | bcc_ptr++; | |
3456 | } else | |
6345a3a8 | 3457 | cFYI(1, ("field of length %d " |
63135e08 | 3458 | "extends beyond end of smb ", |
1da177e4 LT |
3459 | len)); |
3460 | } | |
3461 | } else { | |
6345a3a8 | 3462 | cERROR(1, ("Security Blob extends beyond end " |
63135e08 | 3463 | "of SMB")); |
1da177e4 LT |
3464 | } |
3465 | } else { | |
3466 | cERROR(1, ("No session structure passed in.")); | |
3467 | } | |
3468 | } else { | |
6345a3a8 | 3469 | cERROR(1, ("Invalid Word count %d: ", |
1da177e4 LT |
3470 | smb_buffer_response->WordCount)); |
3471 | rc = -EIO; | |
3472 | } | |
3473 | ||
a8a11d39 | 3474 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3475 | |
3476 | return rc; | |
3477 | } | |
3478 | ||
3479 | int | |
3480 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3481 | const char *tree, struct cifsTconInfo *tcon, | |
3482 | const struct nls_table *nls_codepage) | |
3483 | { | |
3484 | struct smb_hdr *smb_buffer; | |
3485 | struct smb_hdr *smb_buffer_response; | |
3486 | TCONX_REQ *pSMB; | |
3487 | TCONX_RSP *pSMBr; | |
3488 | unsigned char *bcc_ptr; | |
3489 | int rc = 0; | |
3490 | int length; | |
3491 | __u16 count; | |
3492 | ||
3493 | if (ses == NULL) | |
3494 | return -EIO; | |
3495 | ||
3496 | smb_buffer = cifs_buf_get(); | |
3497 | if (smb_buffer == NULL) { | |
3498 | return -ENOMEM; | |
3499 | } | |
3500 | smb_buffer_response = smb_buffer; | |
3501 | ||
3502 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3503 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3504 | |
3505 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3506 | smb_buffer->Uid = ses->Suid; |
3507 | pSMB = (TCONX_REQ *) smb_buffer; | |
3508 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3509 | ||
3510 | pSMB->AndXCommand = 0xFF; | |
3511 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3512 | bcc_ptr = &pSMB->Password[0]; |
fb8c4b14 | 3513 | if ((ses->server->secMode) & SECMODE_USER) { |
eeac8047 | 3514 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
7c7b25bc | 3515 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3516 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3517 | /* already aligned so no need to do it below */ |
eeac8047 | 3518 | } else { |
7c7b25bc | 3519 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3520 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3521 | specified as required (when that support is added to | |
3522 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3523 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3524 | by Samba (not sure whether other servers allow |
3525 | NTLMv2 password here) */ | |
7c7b25bc | 3526 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
50c2f753 | 3527 | if ((extended_security & CIFSSEC_MAY_LANMAN) && |
7c7b25bc SF |
3528 | (ses->server->secType == LANMAN)) |
3529 | calc_lanman_hash(ses, bcc_ptr); | |
3530 | else | |
3531 | #endif /* CIFS_WEAK_PW_HASH */ | |
eeac8047 SF |
3532 | SMBNTencrypt(ses->password, |
3533 | ses->server->cryptKey, | |
3534 | bcc_ptr); | |
3535 | ||
7c7b25bc | 3536 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
fb8c4b14 | 3537 | if (ses->capabilities & CAP_UNICODE) { |
7c7b25bc SF |
3538 | /* must align unicode strings */ |
3539 | *bcc_ptr = 0; /* null byte password */ | |
3540 | bcc_ptr++; | |
3541 | } | |
eeac8047 | 3542 | } |
1da177e4 | 3543 | |
50c2f753 | 3544 | if (ses->server->secMode & |
a878fb22 | 3545 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3546 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3547 | ||
3548 | if (ses->capabilities & CAP_STATUS32) { | |
3549 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3550 | } | |
3551 | if (ses->capabilities & CAP_DFS) { | |
3552 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3553 | } | |
3554 | if (ses->capabilities & CAP_UNICODE) { | |
3555 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3556 | length = | |
50c2f753 SF |
3557 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3558 | 6 /* max utf8 char length in bytes */ * | |
a878fb22 SF |
3559 | (/* server len*/ + 256 /* share len */), nls_codepage); |
3560 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3561 | bcc_ptr += 2; /* skip trailing null */ |
3562 | } else { /* ASCII */ | |
1da177e4 LT |
3563 | strcpy(bcc_ptr, tree); |
3564 | bcc_ptr += strlen(tree) + 1; | |
3565 | } | |
3566 | strcpy(bcc_ptr, "?????"); | |
3567 | bcc_ptr += strlen("?????"); | |
3568 | bcc_ptr += 1; | |
3569 | count = bcc_ptr - &pSMB->Password[0]; | |
3570 | pSMB->hdr.smb_buf_length += count; | |
3571 | pSMB->ByteCount = cpu_to_le16(count); | |
3572 | ||
133672ef SF |
3573 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, |
3574 | CIFS_STD_OP); | |
1da177e4 LT |
3575 | |
3576 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3577 | /* above now done in SendReceive */ | |
3578 | if ((rc == 0) && (tcon != NULL)) { | |
3579 | tcon->tidStatus = CifsGood; | |
3b795210 | 3580 | tcon->need_reconnect = false; |
1da177e4 LT |
3581 | tcon->tid = smb_buffer_response->Tid; |
3582 | bcc_ptr = pByteArea(smb_buffer_response); | |
3583 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
50c2f753 | 3584 | /* skip service field (NB: this field is always ASCII) */ |
7f8ed420 SF |
3585 | if (length == 3) { |
3586 | if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') && | |
3587 | (bcc_ptr[2] == 'C')) { | |
3588 | cFYI(1, ("IPC connection")); | |
3589 | tcon->ipc = 1; | |
3590 | } | |
3591 | } else if (length == 2) { | |
3592 | if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) { | |
3593 | /* the most common case */ | |
3594 | cFYI(1, ("disk share connection")); | |
3595 | } | |
3596 | } | |
50c2f753 | 3597 | bcc_ptr += length + 1; |
1da177e4 LT |
3598 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
3599 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3600 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3601 | if ((bcc_ptr + (2 * length)) - | |
3602 | pByteArea(smb_buffer_response) <= | |
3603 | BCC(smb_buffer_response)) { | |
f99d49ad | 3604 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3605 | tcon->nativeFileSystem = |
e915fc49 | 3606 | kzalloc(length + 2, GFP_KERNEL); |
88f370a6 SF |
3607 | if (tcon->nativeFileSystem) |
3608 | cifs_strfromUCS_le( | |
3609 | tcon->nativeFileSystem, | |
3610 | (__le16 *) bcc_ptr, | |
3611 | length, nls_codepage); | |
1da177e4 LT |
3612 | bcc_ptr += 2 * length; |
3613 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3614 | bcc_ptr[1] = 0; | |
3615 | bcc_ptr += 2; | |
3616 | } | |
50c2f753 | 3617 | /* else do not bother copying these information fields*/ |
1da177e4 LT |
3618 | } else { |
3619 | length = strnlen(bcc_ptr, 1024); | |
3620 | if ((bcc_ptr + length) - | |
3621 | pByteArea(smb_buffer_response) <= | |
3622 | BCC(smb_buffer_response)) { | |
f99d49ad | 3623 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3624 | tcon->nativeFileSystem = |
e915fc49 | 3625 | kzalloc(length + 1, GFP_KERNEL); |
88f370a6 SF |
3626 | if (tcon->nativeFileSystem) |
3627 | strncpy(tcon->nativeFileSystem, bcc_ptr, | |
3628 | length); | |
1da177e4 | 3629 | } |
50c2f753 | 3630 | /* else do not bother copying these information fields*/ |
1da177e4 | 3631 | } |
fb8c4b14 | 3632 | if ((smb_buffer_response->WordCount == 3) || |
1a4e15a0 SF |
3633 | (smb_buffer_response->WordCount == 7)) |
3634 | /* field is in same location */ | |
3979877e SF |
3635 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
3636 | else | |
3637 | tcon->Flags = 0; | |
1da177e4 LT |
3638 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3639 | } else if ((rc == 0) && tcon == NULL) { | |
50c2f753 | 3640 | /* all we need to save for IPC$ connection */ |
1da177e4 LT |
3641 | ses->ipc_tid = smb_buffer_response->Tid; |
3642 | } | |
3643 | ||
a8a11d39 | 3644 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3645 | return rc; |
3646 | } | |
3647 | ||
3648 | int | |
3649 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3650 | { | |
3651 | int rc = 0; | |
50c2f753 | 3652 | char *tmp; |
1da177e4 | 3653 | |
f1987b44 JL |
3654 | if (cifs_sb->tcon) |
3655 | cifs_put_tcon(cifs_sb->tcon); | |
50c2f753 | 3656 | |
1da177e4 | 3657 | cifs_sb->tcon = NULL; |
2fe87f02 SF |
3658 | tmp = cifs_sb->prepath; |
3659 | cifs_sb->prepathlen = 0; | |
3660 | cifs_sb->prepath = NULL; | |
3661 | kfree(tmp); | |
1da177e4 | 3662 | |
88e7d705 | 3663 | return rc; |
50c2f753 | 3664 | } |
1da177e4 LT |
3665 | |
3666 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
50c2f753 | 3667 | struct nls_table *nls_info) |
1da177e4 LT |
3668 | { |
3669 | int rc = 0; | |
7c7b25bc | 3670 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
4b18f2a9 | 3671 | bool ntlmv2_flag = false; |
ad009ac9 | 3672 | int first_time = 0; |
cb7691b6 | 3673 | struct TCP_Server_Info *server = pSesInfo->server; |
1da177e4 LT |
3674 | |
3675 | /* what if server changes its buffer size after dropping the session? */ | |
cb7691b6 | 3676 | if (server->maxBuf == 0) /* no need to send on reconnect */ { |
1da177e4 | 3677 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
cb7691b6 JL |
3678 | if (rc == -EAGAIN) { |
3679 | /* retry only once on 1st time connection */ | |
1da177e4 | 3680 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
50c2f753 | 3681 | if (rc == -EAGAIN) |
1da177e4 LT |
3682 | rc = -EHOSTDOWN; |
3683 | } | |
fb8c4b14 | 3684 | if (rc == 0) { |
1da177e4 | 3685 | spin_lock(&GlobalMid_Lock); |
cb7691b6 JL |
3686 | if (server->tcpStatus != CifsExiting) |
3687 | server->tcpStatus = CifsGood; | |
1da177e4 LT |
3688 | else |
3689 | rc = -EHOSTDOWN; | |
3690 | spin_unlock(&GlobalMid_Lock); | |
3691 | ||
3692 | } | |
ad009ac9 | 3693 | first_time = 1; |
1da177e4 | 3694 | } |
26b994fa SF |
3695 | |
3696 | if (rc) | |
3697 | goto ss_err_exit; | |
3698 | ||
3699 | pSesInfo->flags = 0; | |
cb7691b6 | 3700 | pSesInfo->capabilities = server->capabilities; |
26b994fa SF |
3701 | if (linuxExtEnabled == 0) |
3702 | pSesInfo->capabilities &= (~CAP_UNIX); | |
ad009ac9 | 3703 | /* pSesInfo->sequence_number = 0;*/ |
26b994fa | 3704 | cFYI(1, ("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", |
cb7691b6 JL |
3705 | server->secMode, server->capabilities, server->timeAdj)); |
3706 | ||
26b994fa SF |
3707 | if (experimEnabled < 2) |
3708 | rc = CIFS_SessSetup(xid, pSesInfo, first_time, nls_info); | |
3709 | else if (extended_security | |
3710 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
cb7691b6 | 3711 | && (server->secType == NTLMSSP)) { |
26b994fa SF |
3712 | rc = -EOPNOTSUPP; |
3713 | } else if (extended_security | |
3714 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
cb7691b6 | 3715 | && (server->secType == RawNTLMSSP)) { |
26b994fa SF |
3716 | cFYI(1, ("NTLMSSP sesssetup")); |
3717 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, pSesInfo, &ntlmv2_flag, | |
3718 | nls_info); | |
3719 | if (!rc) { | |
3720 | if (ntlmv2_flag) { | |
3721 | char *v2_response; | |
3722 | cFYI(1, ("more secure NTLM ver2 hash")); | |
3723 | if (CalcNTLMv2_partial_mac_key(pSesInfo, | |
3724 | nls_info)) { | |
3725 | rc = -ENOMEM; | |
3726 | goto ss_err_exit; | |
3727 | } else | |
3728 | v2_response = kmalloc(16 + 64 /* blob*/, | |
3729 | GFP_KERNEL); | |
3730 | if (v2_response) { | |
3731 | CalcNTLMv2_response(pSesInfo, | |
3732 | v2_response); | |
3733 | /* if (first_time) | |
3734 | cifs_calculate_ntlmv2_mac_key */ | |
3735 | kfree(v2_response); | |
1da177e4 | 3736 | /* BB Put dummy sig in SessSetup PDU? */ |
1da177e4 | 3737 | } else { |
26b994fa SF |
3738 | rc = -ENOMEM; |
3739 | goto ss_err_exit; | |
1da177e4 | 3740 | } |
26b994fa SF |
3741 | |
3742 | } else { | |
3743 | SMBNTencrypt(pSesInfo->password, | |
cb7691b6 | 3744 | server->cryptKey, |
26b994fa SF |
3745 | ntlm_session_key); |
3746 | ||
3747 | if (first_time) | |
3748 | cifs_calculate_mac_key( | |
cb7691b6 | 3749 | &server->mac_signing_key, |
26b994fa SF |
3750 | ntlm_session_key, |
3751 | pSesInfo->password); | |
3752 | } | |
1da177e4 LT |
3753 | /* for better security the weaker lanman hash not sent |
3754 | in AuthSessSetup so we no longer calculate it */ | |
3755 | ||
26b994fa SF |
3756 | rc = CIFSNTLMSSPAuthSessSetup(xid, pSesInfo, |
3757 | ntlm_session_key, | |
3758 | ntlmv2_flag, | |
3759 | nls_info); | |
3760 | } | |
3761 | } else { /* old style NTLM 0.12 session setup */ | |
cb7691b6 | 3762 | SMBNTencrypt(pSesInfo->password, server->cryptKey, |
26b994fa | 3763 | ntlm_session_key); |
1da177e4 | 3764 | |
26b994fa | 3765 | if (first_time) |
cb7691b6 JL |
3766 | cifs_calculate_mac_key(&server->mac_signing_key, |
3767 | ntlm_session_key, | |
3768 | pSesInfo->password); | |
ad009ac9 | 3769 | |
26b994fa SF |
3770 | rc = CIFSSessSetup(xid, pSesInfo, ntlm_session_key, nls_info); |
3771 | } | |
3772 | if (rc) { | |
3773 | cERROR(1, ("Send error in SessSetup = %d", rc)); | |
3774 | } else { | |
3775 | cFYI(1, ("CIFS Session Established successfully")); | |
469ee614 | 3776 | spin_lock(&GlobalMid_Lock); |
1da177e4 | 3777 | pSesInfo->status = CifsGood; |
3b795210 | 3778 | pSesInfo->need_reconnect = false; |
469ee614 | 3779 | spin_unlock(&GlobalMid_Lock); |
1da177e4 | 3780 | } |
26b994fa | 3781 | |
1da177e4 LT |
3782 | ss_err_exit: |
3783 | return rc; | |
3784 | } | |
3785 |