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> | |
1da177e4 LT |
26 | #include <linux/pagemap.h> |
27 | #include <linux/ctype.h> | |
28 | #include <linux/utsname.h> | |
29 | #include <linux/mempool.h> | |
b8643e1b | 30 | #include <linux/delay.h> |
f191401f | 31 | #include <linux/completion.h> |
aaf737ad | 32 | #include <linux/kthread.h> |
0ae0efad | 33 | #include <linux/pagevec.h> |
7dfb7103 | 34 | #include <linux/freezer.h> |
1da177e4 LT |
35 | #include <asm/uaccess.h> |
36 | #include <asm/processor.h> | |
0e2bedaa | 37 | #include <net/ipv6.h> |
1da177e4 LT |
38 | #include "cifspdu.h" |
39 | #include "cifsglob.h" | |
40 | #include "cifsproto.h" | |
41 | #include "cifs_unicode.h" | |
42 | #include "cifs_debug.h" | |
43 | #include "cifs_fs_sb.h" | |
44 | #include "ntlmssp.h" | |
45 | #include "nterr.h" | |
46 | #include "rfc1002pdu.h" | |
a2653eba | 47 | #include "cn_cifs.h" |
1da177e4 LT |
48 | |
49 | #define CIFS_PORT 445 | |
50 | #define RFC1001_PORT 139 | |
51 | ||
1da177e4 LT |
52 | extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, |
53 | unsigned char *p24); | |
54 | ||
55 | extern mempool_t *cifs_req_poolp; | |
56 | ||
57 | struct smb_vol { | |
58 | char *username; | |
59 | char *password; | |
60 | char *domainname; | |
61 | char *UNC; | |
62 | char *UNCip; | |
95b1cb90 | 63 | char *in6_addr; /* ipv6 address as human readable form of in6_addr */ |
1da177e4 LT |
64 | char *iocharset; /* local code page for mapping to and from Unicode */ |
65 | char source_rfc1001_name[16]; /* netbios name of client */ | |
a10faeb2 | 66 | char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */ |
1da177e4 LT |
67 | uid_t linux_uid; |
68 | gid_t linux_gid; | |
69 | mode_t file_mode; | |
70 | mode_t dir_mode; | |
189acaae | 71 | unsigned secFlg; |
4b18f2a9 SF |
72 | bool rw:1; |
73 | bool retry:1; | |
74 | bool intr:1; | |
75 | bool setuids:1; | |
76 | bool override_uid:1; | |
77 | bool override_gid:1; | |
d0a9c078 | 78 | bool dynperm:1; |
4b18f2a9 SF |
79 | bool noperm:1; |
80 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
81 | bool cifs_acl:1; | |
82 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ | |
83 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
84 | bool direct_io:1; | |
95b1cb90 SF |
85 | bool remap:1; /* set to remap seven reserved chars in filenames */ |
86 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ | |
4b18f2a9 SF |
87 | bool no_linux_ext:1; |
88 | bool sfu_emul:1; | |
95b1cb90 SF |
89 | bool nullauth:1; /* attempt to authenticate with null user */ |
90 | bool nocase:1; /* request case insensitive filenames */ | |
91 | bool nobrl:1; /* disable sending byte range locks to srv */ | |
13a6e42a | 92 | bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ |
95b1cb90 | 93 | bool seal:1; /* request transport encryption on share */ |
84210e91 SF |
94 | bool nodfs:1; /* Do not request DFS, even if available */ |
95 | bool local_lease:1; /* check leases only on local system, not remote */ | |
edf1ae40 SF |
96 | bool noblocksnd:1; |
97 | bool noautotune:1; | |
be652445 | 98 | bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ |
1da177e4 LT |
99 | unsigned int rsize; |
100 | unsigned int wsize; | |
101 | unsigned int sockopt; | |
102 | unsigned short int port; | |
fb8c4b14 | 103 | char *prepath; |
1da177e4 LT |
104 | }; |
105 | ||
bcf4b106 | 106 | static int ipv4_connect(struct TCP_Server_Info *server); |
d5c5605c | 107 | static int ipv6_connect(struct TCP_Server_Info *server); |
1da177e4 | 108 | |
d5c5605c JL |
109 | /* |
110 | * cifs tcp session reconnection | |
111 | * | |
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 | */ | |
2cd646a2 | 117 | static int |
1da177e4 LT |
118 | cifs_reconnect(struct TCP_Server_Info *server) |
119 | { | |
120 | int rc = 0; | |
f1987b44 | 121 | struct list_head *tmp, *tmp2; |
1da177e4 LT |
122 | struct cifsSesInfo *ses; |
123 | struct cifsTconInfo *tcon; | |
fb8c4b14 | 124 | struct mid_q_entry *mid_entry; |
50c2f753 | 125 | |
1da177e4 | 126 | spin_lock(&GlobalMid_Lock); |
469ee614 | 127 | if (server->tcpStatus == CifsExiting) { |
fb8c4b14 | 128 | /* the demux thread will exit normally |
1da177e4 LT |
129 | next time through the loop */ |
130 | spin_unlock(&GlobalMid_Lock); | |
131 | return rc; | |
132 | } else | |
133 | server->tcpStatus = CifsNeedReconnect; | |
134 | spin_unlock(&GlobalMid_Lock); | |
135 | server->maxBuf = 0; | |
136 | ||
e4eb295d | 137 | cFYI(1, ("Reconnecting tcp session")); |
1da177e4 LT |
138 | |
139 | /* before reconnecting the tcp session, mark the smb session (uid) | |
140 | and the tid bad so they are not used until reconnected */ | |
14fbf50d JL |
141 | read_lock(&cifs_tcp_ses_lock); |
142 | list_for_each(tmp, &server->smb_ses_list) { | |
143 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); | |
144 | ses->need_reconnect = true; | |
145 | ses->ipc_tid = 0; | |
f1987b44 JL |
146 | list_for_each(tmp2, &ses->tcon_list) { |
147 | tcon = list_entry(tmp2, struct cifsTconInfo, tcon_list); | |
3b795210 | 148 | tcon->need_reconnect = true; |
1da177e4 | 149 | } |
1da177e4 | 150 | } |
f1987b44 | 151 | read_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 152 | /* do not want to be sending data on a socket we are freeing */ |
72ca545b | 153 | mutex_lock(&server->srv_mutex); |
fb8c4b14 | 154 | if (server->ssocket) { |
467a8f8d | 155 | cFYI(1, ("State: 0x%x Flags: 0x%lx", server->ssocket->state, |
1da177e4 | 156 | server->ssocket->flags)); |
91cf45f0 | 157 | kernel_sock_shutdown(server->ssocket, SHUT_WR); |
fb8c4b14 | 158 | cFYI(1, ("Post shutdown state: 0x%x Flags: 0x%lx", |
467a8f8d | 159 | server->ssocket->state, |
1da177e4 LT |
160 | server->ssocket->flags)); |
161 | sock_release(server->ssocket); | |
162 | server->ssocket = NULL; | |
163 | } | |
164 | ||
165 | spin_lock(&GlobalMid_Lock); | |
166 | list_for_each(tmp, &server->pending_mid_q) { | |
167 | mid_entry = list_entry(tmp, struct | |
168 | mid_q_entry, | |
169 | qhead); | |
ad8b15f0 | 170 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { |
09d1db5c SF |
171 | /* Mark other intransit requests as needing |
172 | retry so we do not immediately mark the | |
173 | session bad again (ie after we reconnect | |
174 | below) as they timeout too */ | |
ad8b15f0 | 175 | mid_entry->midState = MID_RETRY_NEEDED; |
1da177e4 LT |
176 | } |
177 | } | |
178 | spin_unlock(&GlobalMid_Lock); | |
72ca545b | 179 | mutex_unlock(&server->srv_mutex); |
1da177e4 | 180 | |
469ee614 JL |
181 | while ((server->tcpStatus != CifsExiting) && |
182 | (server->tcpStatus != CifsGood)) { | |
6c3d8909 | 183 | try_to_freeze(); |
bcf4b106 | 184 | if (server->addr.sockAddr6.sin6_family == AF_INET6) |
d5c5605c | 185 | rc = ipv6_connect(server); |
bcf4b106 JL |
186 | else |
187 | rc = ipv4_connect(server); | |
fb8c4b14 SF |
188 | if (rc) { |
189 | cFYI(1, ("reconnect error %d", rc)); | |
0cb766ae | 190 | msleep(3000); |
1da177e4 LT |
191 | } else { |
192 | atomic_inc(&tcpSesReconnectCount); | |
193 | spin_lock(&GlobalMid_Lock); | |
469ee614 | 194 | if (server->tcpStatus != CifsExiting) |
1da177e4 | 195 | server->tcpStatus = CifsGood; |
ad009ac9 | 196 | server->sequence_number = 0; |
fb8c4b14 | 197 | spin_unlock(&GlobalMid_Lock); |
1da177e4 LT |
198 | /* atomic_set(&server->inFlight,0);*/ |
199 | wake_up(&server->response_q); | |
200 | } | |
201 | } | |
202 | return rc; | |
203 | } | |
204 | ||
fb8c4b14 | 205 | /* |
e4eb295d SF |
206 | return codes: |
207 | 0 not a transact2, or all data present | |
208 | >0 transact2 with that much data missing | |
209 | -EINVAL = invalid transact2 | |
210 | ||
211 | */ | |
fb8c4b14 | 212 | static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) |
e4eb295d | 213 | { |
fb8c4b14 SF |
214 | struct smb_t2_rsp *pSMBt; |
215 | int total_data_size; | |
e4eb295d SF |
216 | int data_in_this_rsp; |
217 | int remaining; | |
218 | ||
fb8c4b14 | 219 | if (pSMB->Command != SMB_COM_TRANSACTION2) |
e4eb295d SF |
220 | return 0; |
221 | ||
fb8c4b14 SF |
222 | /* check for plausible wct, bcc and t2 data and parm sizes */ |
223 | /* check for parm and data offset going beyond end of smb */ | |
224 | if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
467a8f8d | 225 | cFYI(1, ("invalid transact2 word count")); |
e4eb295d SF |
226 | return -EINVAL; |
227 | } | |
228 | ||
229 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
230 | ||
231 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
232 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
233 | ||
234 | remaining = total_data_size - data_in_this_rsp; | |
235 | ||
fb8c4b14 | 236 | if (remaining == 0) |
e4eb295d | 237 | return 0; |
fb8c4b14 | 238 | else if (remaining < 0) { |
467a8f8d | 239 | cFYI(1, ("total data %d smaller than data in frame %d", |
e4eb295d SF |
240 | total_data_size, data_in_this_rsp)); |
241 | return -EINVAL; | |
242 | } else { | |
467a8f8d | 243 | cFYI(1, ("missing %d bytes from transact2, check next response", |
e4eb295d | 244 | remaining)); |
fb8c4b14 SF |
245 | if (total_data_size > maxBufSize) { |
246 | cERROR(1, ("TotalDataSize %d is over maximum buffer %d", | |
247 | total_data_size, maxBufSize)); | |
248 | return -EINVAL; | |
e4eb295d SF |
249 | } |
250 | return remaining; | |
251 | } | |
252 | } | |
253 | ||
fb8c4b14 | 254 | static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) |
e4eb295d SF |
255 | { |
256 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
257 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
258 | int total_data_size; | |
259 | int total_in_buf; | |
260 | int remaining; | |
261 | int total_in_buf2; | |
fb8c4b14 SF |
262 | char *data_area_of_target; |
263 | char *data_area_of_buf2; | |
e4eb295d SF |
264 | __u16 byte_count; |
265 | ||
266 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
267 | ||
fb8c4b14 | 268 | if (total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { |
63135e08 | 269 | cFYI(1, ("total data size of primary and secondary t2 differ")); |
e4eb295d SF |
270 | } |
271 | ||
272 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
273 | ||
274 | remaining = total_data_size - total_in_buf; | |
50c2f753 | 275 | |
fb8c4b14 | 276 | if (remaining < 0) |
e4eb295d SF |
277 | return -EINVAL; |
278 | ||
fb8c4b14 | 279 | if (remaining == 0) /* nothing to do, ignore */ |
e4eb295d | 280 | return 0; |
50c2f753 | 281 | |
e4eb295d | 282 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); |
fb8c4b14 | 283 | if (remaining < total_in_buf2) { |
467a8f8d | 284 | cFYI(1, ("transact2 2nd response contains too much data")); |
e4eb295d SF |
285 | } |
286 | ||
287 | /* find end of first SMB data area */ | |
fb8c4b14 | 288 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + |
e4eb295d SF |
289 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); |
290 | /* validate target area */ | |
291 | ||
292 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
fb8c4b14 | 293 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); |
e4eb295d SF |
294 | |
295 | data_area_of_target += total_in_buf; | |
296 | ||
297 | /* copy second buffer into end of first buffer */ | |
fb8c4b14 | 298 | memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); |
e4eb295d SF |
299 | total_in_buf += total_in_buf2; |
300 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
301 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
302 | byte_count += total_in_buf2; | |
303 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
304 | ||
70ca734a | 305 | byte_count = pTargetSMB->smb_buf_length; |
e4eb295d SF |
306 | byte_count += total_in_buf2; |
307 | ||
308 | /* BB also add check that we are not beyond maximum buffer size */ | |
50c2f753 | 309 | |
70ca734a | 310 | pTargetSMB->smb_buf_length = byte_count; |
e4eb295d | 311 | |
fb8c4b14 | 312 | if (remaining == total_in_buf2) { |
467a8f8d | 313 | cFYI(1, ("found the last secondary response")); |
e4eb295d SF |
314 | return 0; /* we are done */ |
315 | } else /* more responses to go */ | |
316 | return 1; | |
317 | ||
318 | } | |
319 | ||
1da177e4 LT |
320 | static int |
321 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
322 | { | |
323 | int length; | |
324 | unsigned int pdu_length, total_read; | |
325 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
326 | struct smb_hdr *bigbuf = NULL; |
327 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
328 | struct msghdr smb_msg; |
329 | struct kvec iov; | |
330 | struct socket *csocket = server->ssocket; | |
331 | struct list_head *tmp; | |
332 | struct cifsSesInfo *ses; | |
333 | struct task_struct *task_to_wake = NULL; | |
334 | struct mid_q_entry *mid_entry; | |
70ca734a | 335 | char temp; |
4b18f2a9 SF |
336 | bool isLargeBuf = false; |
337 | bool isMultiRsp; | |
e4eb295d | 338 | int reconnect; |
1da177e4 | 339 | |
1da177e4 | 340 | current->flags |= PF_MEMALLOC; |
ba25f9dc | 341 | cFYI(1, ("Demultiplex PID: %d", task_pid_nr(current))); |
93d0ec85 JL |
342 | |
343 | length = atomic_inc_return(&tcpSesAllocCount); | |
344 | if (length > 1) | |
26f57364 SF |
345 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, |
346 | GFP_KERNEL); | |
1da177e4 | 347 | |
83144186 | 348 | set_freezable(); |
469ee614 | 349 | while (server->tcpStatus != CifsExiting) { |
ede1327e SF |
350 | if (try_to_freeze()) |
351 | continue; | |
b8643e1b SF |
352 | if (bigbuf == NULL) { |
353 | bigbuf = cifs_buf_get(); | |
0fd1ffe0 PM |
354 | if (!bigbuf) { |
355 | cERROR(1, ("No memory for large SMB response")); | |
b8643e1b SF |
356 | msleep(3000); |
357 | /* retry will check if exiting */ | |
358 | continue; | |
359 | } | |
0fd1ffe0 PM |
360 | } else if (isLargeBuf) { |
361 | /* we are reusing a dirty large buf, clear its start */ | |
26f57364 | 362 | memset(bigbuf, 0, sizeof(struct smb_hdr)); |
1da177e4 | 363 | } |
b8643e1b SF |
364 | |
365 | if (smallbuf == NULL) { | |
366 | smallbuf = cifs_small_buf_get(); | |
0fd1ffe0 PM |
367 | if (!smallbuf) { |
368 | cERROR(1, ("No memory for SMB response")); | |
b8643e1b SF |
369 | msleep(1000); |
370 | /* retry will check if exiting */ | |
371 | continue; | |
372 | } | |
373 | /* beginning of smb buffer is cleared in our buf_get */ | |
374 | } else /* if existing small buf clear beginning */ | |
26f57364 | 375 | memset(smallbuf, 0, sizeof(struct smb_hdr)); |
b8643e1b | 376 | |
4b18f2a9 SF |
377 | isLargeBuf = false; |
378 | isMultiRsp = false; | |
b8643e1b | 379 | smb_buffer = smallbuf; |
1da177e4 LT |
380 | iov.iov_base = smb_buffer; |
381 | iov.iov_len = 4; | |
382 | smb_msg.msg_control = NULL; | |
383 | smb_msg.msg_controllen = 0; | |
f01d5e14 SF |
384 | pdu_length = 4; /* enough to get RFC1001 header */ |
385 | incomplete_rcv: | |
1da177e4 LT |
386 | length = |
387 | kernel_recvmsg(csocket, &smb_msg, | |
f01d5e14 | 388 | &iov, 1, pdu_length, 0 /* BB other flags? */); |
1da177e4 | 389 | |
469ee614 | 390 | if (server->tcpStatus == CifsExiting) { |
1da177e4 LT |
391 | break; |
392 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
0fd1ffe0 | 393 | cFYI(1, ("Reconnect after server stopped responding")); |
1da177e4 | 394 | cifs_reconnect(server); |
0fd1ffe0 | 395 | cFYI(1, ("call to reconnect done")); |
1da177e4 LT |
396 | csocket = server->ssocket; |
397 | continue; | |
398 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 399 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
400 | allowing socket to clear and app threads to set |
401 | tcpStatus CifsNeedReconnect if server hung */ | |
c527c8a7 SF |
402 | if (pdu_length < 4) { |
403 | iov.iov_base = (4 - pdu_length) + | |
404 | (char *)smb_buffer; | |
405 | iov.iov_len = pdu_length; | |
406 | smb_msg.msg_control = NULL; | |
407 | smb_msg.msg_controllen = 0; | |
c18c732e | 408 | goto incomplete_rcv; |
c527c8a7 | 409 | } else |
c18c732e | 410 | continue; |
1da177e4 | 411 | } else if (length <= 0) { |
0fd1ffe0 PM |
412 | if (server->tcpStatus == CifsNew) { |
413 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
414 | /* some servers kill the TCP session rather than |
415 | returning an SMB negprot error, in which | |
416 | case reconnecting here is not going to help, | |
417 | and so simply return error to mount */ | |
1da177e4 LT |
418 | break; |
419 | } | |
0fd1ffe0 | 420 | if (!try_to_freeze() && (length == -EINTR)) { |
467a8f8d | 421 | cFYI(1, ("cifsd thread killed")); |
1da177e4 LT |
422 | break; |
423 | } | |
467a8f8d | 424 | cFYI(1, ("Reconnect after unexpected peek error %d", |
57337e42 | 425 | length)); |
1da177e4 LT |
426 | cifs_reconnect(server); |
427 | csocket = server->ssocket; | |
428 | wake_up(&server->response_q); | |
429 | continue; | |
2a974680 PT |
430 | } else if (length < pdu_length) { |
431 | cFYI(1, ("requested %d bytes but only got %d bytes", | |
432 | pdu_length, length)); | |
f01d5e14 | 433 | pdu_length -= length; |
f01d5e14 SF |
434 | msleep(1); |
435 | goto incomplete_rcv; | |
46810cbf | 436 | } |
1da177e4 | 437 | |
70ca734a SF |
438 | /* The right amount was read from socket - 4 bytes */ |
439 | /* so we can now interpret the length field */ | |
46810cbf | 440 | |
70ca734a SF |
441 | /* the first byte big endian of the length field, |
442 | is actually not part of the length but the type | |
443 | with the most common, zero, as regular data */ | |
444 | temp = *((char *) smb_buffer); | |
46810cbf | 445 | |
fb8c4b14 | 446 | /* Note that FC 1001 length is big endian on the wire, |
70ca734a SF |
447 | but we convert it here so it is always manipulated |
448 | as host byte order */ | |
5ca33c6a | 449 | pdu_length = be32_to_cpu((__force __be32)smb_buffer->smb_buf_length); |
70ca734a SF |
450 | smb_buffer->smb_buf_length = pdu_length; |
451 | ||
467a8f8d | 452 | cFYI(1, ("rfc1002 length 0x%x", pdu_length+4)); |
46810cbf | 453 | |
70ca734a | 454 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
fb8c4b14 | 455 | continue; |
70ca734a | 456 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
467a8f8d | 457 | cFYI(1, ("Good RFC 1002 session rsp")); |
e4eb295d | 458 | continue; |
70ca734a | 459 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
fb8c4b14 | 460 | /* we get this from Windows 98 instead of |
46810cbf | 461 | an error on SMB negprot response */ |
fb8c4b14 | 462 | cFYI(1, ("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 463 | pdu_length)); |
fb8c4b14 SF |
464 | if (server->tcpStatus == CifsNew) { |
465 | /* if nack on negprot (rather than | |
46810cbf SF |
466 | ret of smb negprot error) reconnecting |
467 | not going to help, ret error to mount */ | |
468 | break; | |
469 | } else { | |
470 | /* give server a second to | |
471 | clean up before reconnect attempt */ | |
472 | msleep(1000); | |
473 | /* always try 445 first on reconnect | |
474 | since we get NACK on some if we ever | |
fb8c4b14 | 475 | connected to port 139 (the NACK is |
46810cbf SF |
476 | since we do not begin with RFC1001 |
477 | session initialize frame) */ | |
fb8c4b14 | 478 | server->addr.sockAddr.sin_port = |
46810cbf | 479 | htons(CIFS_PORT); |
1da177e4 LT |
480 | cifs_reconnect(server); |
481 | csocket = server->ssocket; | |
46810cbf | 482 | wake_up(&server->response_q); |
1da177e4 | 483 | continue; |
46810cbf | 484 | } |
70ca734a | 485 | } else if (temp != (char) 0) { |
fb8c4b14 | 486 | cERROR(1, ("Unknown RFC 1002 frame")); |
70ca734a SF |
487 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
488 | length); | |
46810cbf SF |
489 | cifs_reconnect(server); |
490 | csocket = server->ssocket; | |
491 | continue; | |
e4eb295d SF |
492 | } |
493 | ||
494 | /* else we have an SMB response */ | |
fb8c4b14 | 495 | if ((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || |
26f57364 | 496 | (pdu_length < sizeof(struct smb_hdr) - 1 - 4)) { |
e4eb295d | 497 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 498 | length, pdu_length+4)); |
e4eb295d SF |
499 | cifs_reconnect(server); |
500 | csocket = server->ssocket; | |
501 | wake_up(&server->response_q); | |
502 | continue; | |
fb8c4b14 | 503 | } |
e4eb295d SF |
504 | |
505 | /* else length ok */ | |
506 | reconnect = 0; | |
507 | ||
fb8c4b14 | 508 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
4b18f2a9 | 509 | isLargeBuf = true; |
e4eb295d SF |
510 | memcpy(bigbuf, smallbuf, 4); |
511 | smb_buffer = bigbuf; | |
512 | } | |
513 | length = 0; | |
514 | iov.iov_base = 4 + (char *)smb_buffer; | |
515 | iov.iov_len = pdu_length; | |
fb8c4b14 | 516 | for (total_read = 0; total_read < pdu_length; |
e4eb295d SF |
517 | total_read += length) { |
518 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
519 | pdu_length - total_read, 0); | |
469ee614 | 520 | if ((server->tcpStatus == CifsExiting) || |
e4eb295d SF |
521 | (length == -EINTR)) { |
522 | /* then will exit */ | |
523 | reconnect = 2; | |
524 | break; | |
525 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
526 | cifs_reconnect(server); |
527 | csocket = server->ssocket; | |
fb8c4b14 | 528 | /* Reconnect wakes up rspns q */ |
e4eb295d SF |
529 | /* Now we will reread sock */ |
530 | reconnect = 1; | |
531 | break; | |
fb8c4b14 | 532 | } else if ((length == -ERESTARTSYS) || |
e4eb295d SF |
533 | (length == -EAGAIN)) { |
534 | msleep(1); /* minimum sleep to prevent looping, | |
fb8c4b14 | 535 | allowing socket to clear and app |
e4eb295d SF |
536 | threads to set tcpStatus |
537 | CifsNeedReconnect if server hung*/ | |
c18c732e | 538 | length = 0; |
46810cbf | 539 | continue; |
e4eb295d | 540 | } else if (length <= 0) { |
fb8c4b14 | 541 | cERROR(1, ("Received no data, expecting %d", |
e4eb295d SF |
542 | pdu_length - total_read)); |
543 | cifs_reconnect(server); | |
544 | csocket = server->ssocket; | |
545 | reconnect = 1; | |
546 | break; | |
46810cbf | 547 | } |
e4eb295d | 548 | } |
fb8c4b14 | 549 | if (reconnect == 2) |
e4eb295d | 550 | break; |
fb8c4b14 | 551 | else if (reconnect == 1) |
e4eb295d | 552 | continue; |
1da177e4 | 553 | |
e4eb295d | 554 | length += 4; /* account for rfc1002 hdr */ |
50c2f753 | 555 | |
09d1db5c | 556 | |
e4eb295d | 557 | dump_smb(smb_buffer, length); |
184ed211 | 558 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 559 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
560 | continue; |
561 | } | |
1da177e4 | 562 | |
e4eb295d SF |
563 | |
564 | task_to_wake = NULL; | |
565 | spin_lock(&GlobalMid_Lock); | |
566 | list_for_each(tmp, &server->pending_mid_q) { | |
567 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
568 | ||
50c2f753 | 569 | if ((mid_entry->mid == smb_buffer->Mid) && |
e4eb295d SF |
570 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && |
571 | (mid_entry->command == smb_buffer->Command)) { | |
fb8c4b14 | 572 | if (check2ndT2(smb_buffer,server->maxBuf) > 0) { |
e4eb295d | 573 | /* We have a multipart transact2 resp */ |
4b18f2a9 | 574 | isMultiRsp = true; |
fb8c4b14 | 575 | if (mid_entry->resp_buf) { |
e4eb295d | 576 | /* merge response - fix up 1st*/ |
50c2f753 | 577 | if (coalesce_t2(smb_buffer, |
e4eb295d | 578 | mid_entry->resp_buf)) { |
4b18f2a9 SF |
579 | mid_entry->multiRsp = |
580 | true; | |
e4eb295d SF |
581 | break; |
582 | } else { | |
583 | /* all parts received */ | |
4b18f2a9 SF |
584 | mid_entry->multiEnd = |
585 | true; | |
50c2f753 | 586 | goto multi_t2_fnd; |
e4eb295d SF |
587 | } |
588 | } else { | |
fb8c4b14 | 589 | if (!isLargeBuf) { |
e4eb295d SF |
590 | cERROR(1,("1st trans2 resp needs bigbuf")); |
591 | /* BB maybe we can fix this up, switch | |
50c2f753 | 592 | to already allocated large buffer? */ |
e4eb295d | 593 | } else { |
cd63499c | 594 | /* Have first buffer */ |
e4eb295d SF |
595 | mid_entry->resp_buf = |
596 | smb_buffer; | |
4b18f2a9 SF |
597 | mid_entry->largeBuf = |
598 | true; | |
e4eb295d SF |
599 | bigbuf = NULL; |
600 | } | |
601 | } | |
602 | break; | |
50c2f753 | 603 | } |
e4eb295d | 604 | mid_entry->resp_buf = smb_buffer; |
4b18f2a9 | 605 | mid_entry->largeBuf = isLargeBuf; |
e4eb295d SF |
606 | multi_t2_fnd: |
607 | task_to_wake = mid_entry->tsk; | |
608 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
609 | #ifdef CONFIG_CIFS_STATS2 |
610 | mid_entry->when_received = jiffies; | |
611 | #endif | |
3a5ff61c SF |
612 | /* so we do not time out requests to server |
613 | which is still responding (since server could | |
614 | be busy but not dead) */ | |
615 | server->lstrp = jiffies; | |
e4eb295d | 616 | break; |
46810cbf | 617 | } |
1da177e4 | 618 | } |
e4eb295d SF |
619 | spin_unlock(&GlobalMid_Lock); |
620 | if (task_to_wake) { | |
cd63499c | 621 | /* Was previous buf put in mpx struct for multi-rsp? */ |
fb8c4b14 | 622 | if (!isMultiRsp) { |
cd63499c | 623 | /* smb buffer will be freed by user thread */ |
26f57364 | 624 | if (isLargeBuf) |
cd63499c | 625 | bigbuf = NULL; |
26f57364 | 626 | else |
cd63499c SF |
627 | smallbuf = NULL; |
628 | } | |
e4eb295d | 629 | wake_up_process(task_to_wake); |
4b18f2a9 SF |
630 | } else if (!is_valid_oplock_break(smb_buffer, server) && |
631 | !isMultiRsp) { | |
50c2f753 SF |
632 | cERROR(1, ("No task to wake, unknown frame received! " |
633 | "NumMids %d", midCount.counter)); | |
634 | cifs_dump_mem("Received Data is: ", (char *)smb_buffer, | |
70ca734a | 635 | sizeof(struct smb_hdr)); |
3979877e SF |
636 | #ifdef CONFIG_CIFS_DEBUG2 |
637 | cifs_dump_detail(smb_buffer); | |
638 | cifs_dump_mids(server); | |
639 | #endif /* CIFS_DEBUG2 */ | |
50c2f753 | 640 | |
e4eb295d SF |
641 | } |
642 | } /* end while !EXITING */ | |
643 | ||
e7ddee90 JL |
644 | /* take it off the list, if it's not already */ |
645 | write_lock(&cifs_tcp_ses_lock); | |
646 | list_del_init(&server->tcp_ses_list); | |
647 | write_unlock(&cifs_tcp_ses_lock); | |
648 | ||
1da177e4 LT |
649 | spin_lock(&GlobalMid_Lock); |
650 | server->tcpStatus = CifsExiting; | |
e691b9d1 | 651 | spin_unlock(&GlobalMid_Lock); |
dbdbb876 | 652 | wake_up_all(&server->response_q); |
e691b9d1 | 653 | |
31ca3bc3 SF |
654 | /* check if we have blocked requests that need to free */ |
655 | /* Note that cifs_max_pending is normally 50, but | |
656 | can be set at module install time to as little as two */ | |
e691b9d1 | 657 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 | 658 | if (atomic_read(&server->inFlight) >= cifs_max_pending) |
31ca3bc3 SF |
659 | atomic_set(&server->inFlight, cifs_max_pending - 1); |
660 | /* We do not want to set the max_pending too low or we | |
661 | could end up with the counter going negative */ | |
1da177e4 | 662 | spin_unlock(&GlobalMid_Lock); |
50c2f753 | 663 | /* Although there should not be any requests blocked on |
1da177e4 | 664 | this queue it can not hurt to be paranoid and try to wake up requests |
09d1db5c | 665 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
666 | to the same server - they now will see the session is in exit state |
667 | and get out of SendReceive. */ | |
668 | wake_up_all(&server->request_q); | |
669 | /* give those requests time to exit */ | |
b8643e1b | 670 | msleep(125); |
50c2f753 | 671 | |
fb8c4b14 | 672 | if (server->ssocket) { |
1da177e4 LT |
673 | sock_release(csocket); |
674 | server->ssocket = NULL; | |
675 | } | |
b8643e1b | 676 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
a8a11d39 MK |
677 | cifs_buf_release(bigbuf); |
678 | if (smallbuf) /* no sense logging a debug message if NULL */ | |
b8643e1b | 679 | cifs_small_buf_release(smallbuf); |
1da177e4 | 680 | |
14fbf50d JL |
681 | /* |
682 | * BB: we shouldn't have to do any of this. It shouldn't be | |
683 | * possible to exit from the thread with active SMB sessions | |
684 | */ | |
685 | read_lock(&cifs_tcp_ses_lock); | |
1da177e4 | 686 | if (list_empty(&server->pending_mid_q)) { |
09d1db5c SF |
687 | /* loop through server session structures attached to this and |
688 | mark them dead */ | |
14fbf50d JL |
689 | list_for_each(tmp, &server->smb_ses_list) { |
690 | ses = list_entry(tmp, struct cifsSesInfo, | |
691 | smb_ses_list); | |
692 | ses->status = CifsExiting; | |
693 | ses->server = NULL; | |
1da177e4 | 694 | } |
14fbf50d | 695 | read_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 696 | } else { |
31ca3bc3 SF |
697 | /* although we can not zero the server struct pointer yet, |
698 | since there are active requests which may depnd on them, | |
699 | mark the corresponding SMB sessions as exiting too */ | |
14fbf50d | 700 | list_for_each(tmp, &server->smb_ses_list) { |
31ca3bc3 | 701 | ses = list_entry(tmp, struct cifsSesInfo, |
14fbf50d JL |
702 | smb_ses_list); |
703 | ses->status = CifsExiting; | |
31ca3bc3 SF |
704 | } |
705 | ||
1da177e4 LT |
706 | spin_lock(&GlobalMid_Lock); |
707 | list_for_each(tmp, &server->pending_mid_q) { | |
708 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
709 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
50c2f753 SF |
710 | cFYI(1, ("Clearing Mid 0x%x - waking up ", |
711 | mid_entry->mid)); | |
1da177e4 | 712 | task_to_wake = mid_entry->tsk; |
26f57364 | 713 | if (task_to_wake) |
1da177e4 | 714 | wake_up_process(task_to_wake); |
1da177e4 LT |
715 | } |
716 | } | |
717 | spin_unlock(&GlobalMid_Lock); | |
14fbf50d | 718 | read_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 719 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 720 | msleep(125); |
1da177e4 LT |
721 | } |
722 | ||
f191401f | 723 | if (!list_empty(&server->pending_mid_q)) { |
50c2f753 | 724 | /* mpx threads have not exited yet give them |
1da177e4 | 725 | at least the smb send timeout time for long ops */ |
31ca3bc3 SF |
726 | /* due to delays on oplock break requests, we need |
727 | to wait at least 45 seconds before giving up | |
728 | on a request getting a response and going ahead | |
729 | and killing cifsd */ | |
1da177e4 | 730 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 731 | msleep(46000); |
1da177e4 LT |
732 | /* if threads still have not exited they are probably never |
733 | coming home not much else we can do but free the memory */ | |
734 | } | |
1da177e4 | 735 | |
31ca3bc3 SF |
736 | /* last chance to mark ses pointers invalid |
737 | if there are any pointing to this (e.g | |
50c2f753 | 738 | if a crazy root user tried to kill cifsd |
31ca3bc3 | 739 | kernel thread explicitly this might happen) */ |
14fbf50d JL |
740 | /* BB: This shouldn't be necessary, see above */ |
741 | read_lock(&cifs_tcp_ses_lock); | |
742 | list_for_each(tmp, &server->smb_ses_list) { | |
743 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); | |
744 | ses->server = NULL; | |
31ca3bc3 | 745 | } |
14fbf50d | 746 | read_unlock(&cifs_tcp_ses_lock); |
31ca3bc3 | 747 | |
c359cf3c | 748 | kfree(server->hostname); |
b1c8d2b4 | 749 | task_to_wake = xchg(&server->tsk, NULL); |
31ca3bc3 | 750 | kfree(server); |
93d0ec85 JL |
751 | |
752 | length = atomic_dec_return(&tcpSesAllocCount); | |
26f57364 SF |
753 | if (length > 0) |
754 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, | |
755 | GFP_KERNEL); | |
50c2f753 | 756 | |
b1c8d2b4 JL |
757 | /* if server->tsk was NULL then wait for a signal before exiting */ |
758 | if (!task_to_wake) { | |
759 | set_current_state(TASK_INTERRUPTIBLE); | |
760 | while (!signal_pending(current)) { | |
761 | schedule(); | |
762 | set_current_state(TASK_INTERRUPTIBLE); | |
763 | } | |
764 | set_current_state(TASK_RUNNING); | |
765 | } | |
766 | ||
0468a2cf | 767 | module_put_and_exit(0); |
1da177e4 LT |
768 | } |
769 | ||
c359cf3c JL |
770 | /* extract the host portion of the UNC string */ |
771 | static char * | |
772 | extract_hostname(const char *unc) | |
773 | { | |
774 | const char *src; | |
775 | char *dst, *delim; | |
776 | unsigned int len; | |
777 | ||
778 | /* skip double chars at beginning of string */ | |
779 | /* BB: check validity of these bytes? */ | |
780 | src = unc + 2; | |
781 | ||
782 | /* delimiter between hostname and sharename is always '\\' now */ | |
783 | delim = strchr(src, '\\'); | |
784 | if (!delim) | |
785 | return ERR_PTR(-EINVAL); | |
786 | ||
787 | len = delim - src; | |
788 | dst = kmalloc((len + 1), GFP_KERNEL); | |
789 | if (dst == NULL) | |
790 | return ERR_PTR(-ENOMEM); | |
791 | ||
792 | memcpy(dst, src, len); | |
793 | dst[len] = '\0'; | |
794 | ||
795 | return dst; | |
796 | } | |
797 | ||
1da177e4 | 798 | static int |
50c2f753 SF |
799 | cifs_parse_mount_options(char *options, const char *devname, |
800 | struct smb_vol *vol) | |
1da177e4 LT |
801 | { |
802 | char *value; | |
803 | char *data; | |
804 | unsigned int temp_len, i, j; | |
805 | char separator[2]; | |
806 | ||
807 | separator[0] = ','; | |
50c2f753 | 808 | separator[1] = 0; |
1da177e4 | 809 | |
12e36b2f | 810 | if (Local_System_Name[0] != 0) |
50c2f753 | 811 | memcpy(vol->source_rfc1001_name, Local_System_Name, 15); |
2cd646a2 | 812 | else { |
12e36b2f | 813 | char *nodename = utsname()->nodename; |
50c2f753 SF |
814 | int n = strnlen(nodename, 15); |
815 | memset(vol->source_rfc1001_name, 0x20, 15); | |
816 | for (i = 0; i < n; i++) { | |
2cd646a2 SF |
817 | /* does not have to be perfect mapping since field is |
818 | informational, only used for servers that do not support | |
819 | port 445 and it can be overridden at mount time */ | |
12e36b2f | 820 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
2cd646a2 | 821 | } |
1da177e4 LT |
822 | } |
823 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
824 | /* null target name indicates to use *SMBSERVR default called name |
825 | if we end up sending RFC1001 session initialize */ | |
826 | vol->target_rfc1001_name[0] = 0; | |
a001e5b5 DH |
827 | vol->linux_uid = current_uid(); /* use current_euid() instead? */ |
828 | vol->linux_gid = current_gid(); | |
1da177e4 LT |
829 | vol->dir_mode = S_IRWXUGO; |
830 | /* 2767 perms indicate mandatory locking support */ | |
7505e052 | 831 | vol->file_mode = (S_IRWXUGO | S_ISGID) & (~S_IXGRP); |
1da177e4 LT |
832 | |
833 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
4b18f2a9 | 834 | vol->rw = true; |
ac67055e JA |
835 | /* default is always to request posix paths. */ |
836 | vol->posix_paths = 1; | |
837 | ||
1da177e4 LT |
838 | if (!options) |
839 | return 1; | |
840 | ||
50c2f753 | 841 | if (strncmp(options, "sep=", 4) == 0) { |
fb8c4b14 | 842 | if (options[4] != 0) { |
1da177e4 LT |
843 | separator[0] = options[4]; |
844 | options += 5; | |
845 | } else { | |
467a8f8d | 846 | cFYI(1, ("Null separator not allowed")); |
1da177e4 LT |
847 | } |
848 | } | |
50c2f753 | 849 | |
1da177e4 LT |
850 | while ((data = strsep(&options, separator)) != NULL) { |
851 | if (!*data) | |
852 | continue; | |
853 | if ((value = strchr(data, '=')) != NULL) | |
854 | *value++ = '\0'; | |
855 | ||
50c2f753 SF |
856 | /* Have to parse this before we parse for "user" */ |
857 | if (strnicmp(data, "user_xattr", 10) == 0) { | |
1da177e4 | 858 | vol->no_xattr = 0; |
50c2f753 | 859 | } else if (strnicmp(data, "nouser_xattr", 12) == 0) { |
1da177e4 LT |
860 | vol->no_xattr = 1; |
861 | } else if (strnicmp(data, "user", 4) == 0) { | |
4b952a9b | 862 | if (!value) { |
1da177e4 LT |
863 | printk(KERN_WARNING |
864 | "CIFS: invalid or missing username\n"); | |
865 | return 1; /* needs_arg; */ | |
fb8c4b14 | 866 | } else if (!*value) { |
4b952a9b SF |
867 | /* null user, ie anonymous, authentication */ |
868 | vol->nullauth = 1; | |
1da177e4 LT |
869 | } |
870 | if (strnlen(value, 200) < 200) { | |
871 | vol->username = value; | |
872 | } else { | |
873 | printk(KERN_WARNING "CIFS: username too long\n"); | |
874 | return 1; | |
875 | } | |
876 | } else if (strnicmp(data, "pass", 4) == 0) { | |
877 | if (!value) { | |
878 | vol->password = NULL; | |
879 | continue; | |
fb8c4b14 | 880 | } else if (value[0] == 0) { |
1da177e4 LT |
881 | /* check if string begins with double comma |
882 | since that would mean the password really | |
883 | does start with a comma, and would not | |
884 | indicate an empty string */ | |
fb8c4b14 | 885 | if (value[1] != separator[0]) { |
1da177e4 LT |
886 | vol->password = NULL; |
887 | continue; | |
888 | } | |
889 | } | |
890 | temp_len = strlen(value); | |
891 | /* removed password length check, NTLM passwords | |
892 | can be arbitrarily long */ | |
893 | ||
50c2f753 | 894 | /* if comma in password, the string will be |
1da177e4 LT |
895 | prematurely null terminated. Commas in password are |
896 | specified across the cifs mount interface by a double | |
897 | comma ie ,, and a comma used as in other cases ie ',' | |
898 | as a parameter delimiter/separator is single and due | |
899 | to the strsep above is temporarily zeroed. */ | |
900 | ||
901 | /* NB: password legally can have multiple commas and | |
902 | the only illegal character in a password is null */ | |
903 | ||
50c2f753 | 904 | if ((value[temp_len] == 0) && |
09d1db5c | 905 | (value[temp_len+1] == separator[0])) { |
1da177e4 LT |
906 | /* reinsert comma */ |
907 | value[temp_len] = separator[0]; | |
50c2f753 SF |
908 | temp_len += 2; /* move after second comma */ |
909 | while (value[temp_len] != 0) { | |
1da177e4 | 910 | if (value[temp_len] == separator[0]) { |
50c2f753 | 911 | if (value[temp_len+1] == |
09d1db5c SF |
912 | separator[0]) { |
913 | /* skip second comma */ | |
914 | temp_len++; | |
50c2f753 | 915 | } else { |
1da177e4 LT |
916 | /* single comma indicating start |
917 | of next parm */ | |
918 | break; | |
919 | } | |
920 | } | |
921 | temp_len++; | |
922 | } | |
fb8c4b14 | 923 | if (value[temp_len] == 0) { |
1da177e4 LT |
924 | options = NULL; |
925 | } else { | |
926 | value[temp_len] = 0; | |
927 | /* point option to start of next parm */ | |
928 | options = value + temp_len + 1; | |
929 | } | |
50c2f753 | 930 | /* go from value to value + temp_len condensing |
1da177e4 LT |
931 | double commas to singles. Note that this ends up |
932 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 933 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
fb8c4b14 | 934 | if (vol->password == NULL) { |
50c2f753 SF |
935 | printk(KERN_WARNING "CIFS: no memory " |
936 | "for password\n"); | |
433dc24f SF |
937 | return 1; |
938 | } | |
50c2f753 | 939 | for (i = 0, j = 0; i < temp_len; i++, j++) { |
1da177e4 | 940 | vol->password[j] = value[i]; |
fb8c4b14 | 941 | if (value[i] == separator[0] |
09d1db5c | 942 | && value[i+1] == separator[0]) { |
1da177e4 LT |
943 | /* skip second comma */ |
944 | i++; | |
945 | } | |
946 | } | |
947 | vol->password[j] = 0; | |
948 | } else { | |
e915fc49 | 949 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
fb8c4b14 | 950 | if (vol->password == NULL) { |
50c2f753 SF |
951 | printk(KERN_WARNING "CIFS: no memory " |
952 | "for password\n"); | |
433dc24f SF |
953 | return 1; |
954 | } | |
1da177e4 LT |
955 | strcpy(vol->password, value); |
956 | } | |
957 | } else if (strnicmp(data, "ip", 2) == 0) { | |
958 | if (!value || !*value) { | |
959 | vol->UNCip = NULL; | |
960 | } else if (strnlen(value, 35) < 35) { | |
961 | vol->UNCip = value; | |
962 | } else { | |
50c2f753 SF |
963 | printk(KERN_WARNING "CIFS: ip address " |
964 | "too long\n"); | |
1da177e4 LT |
965 | return 1; |
966 | } | |
50c2f753 SF |
967 | } else if (strnicmp(data, "sec", 3) == 0) { |
968 | if (!value || !*value) { | |
969 | cERROR(1, ("no security value specified")); | |
970 | continue; | |
971 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
972 | vol->secFlg |= CIFSSEC_MAY_KRB5 | | |
189acaae | 973 | CIFSSEC_MUST_SIGN; |
bf820679 | 974 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
50c2f753 SF |
975 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
976 | CIFSSEC_MAY_KRB5; */ | |
977 | cERROR(1, ("Krb5 cifs privacy not supported")); | |
bf820679 SF |
978 | return 1; |
979 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 980 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
bf820679 | 981 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 982 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 983 | CIFSSEC_MUST_SIGN; |
bf820679 | 984 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 985 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 986 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 987 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 988 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
989 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
990 | /* ntlm is default so can be turned off too */ | |
750d1151 | 991 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 992 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 993 | /* BB is there a better way to do this? */ |
750d1151 | 994 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
995 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
996 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
50c2f753 | 997 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 998 | #endif |
bf820679 | 999 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 1000 | vol->nullauth = 1; |
50c2f753 SF |
1001 | } else { |
1002 | cERROR(1, ("bad security option: %s", value)); | |
1003 | return 1; | |
1004 | } | |
1da177e4 LT |
1005 | } else if ((strnicmp(data, "unc", 3) == 0) |
1006 | || (strnicmp(data, "target", 6) == 0) | |
1007 | || (strnicmp(data, "path", 4) == 0)) { | |
1008 | if (!value || !*value) { | |
50c2f753 SF |
1009 | printk(KERN_WARNING "CIFS: invalid path to " |
1010 | "network resource\n"); | |
1da177e4 LT |
1011 | return 1; /* needs_arg; */ |
1012 | } | |
1013 | if ((temp_len = strnlen(value, 300)) < 300) { | |
50c2f753 | 1014 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1015 | if (vol->UNC == NULL) |
1da177e4 | 1016 | return 1; |
50c2f753 | 1017 | strcpy(vol->UNC, value); |
1da177e4 LT |
1018 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1019 | vol->UNC[0] = '\\'; | |
1020 | vol->UNC[1] = '\\'; | |
50c2f753 | 1021 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
1da177e4 | 1022 | printk(KERN_WARNING |
50c2f753 SF |
1023 | "CIFS: UNC Path does not begin " |
1024 | "with // or \\\\ \n"); | |
1da177e4 LT |
1025 | return 1; |
1026 | } | |
1027 | } else { | |
1028 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1029 | return 1; | |
1030 | } | |
1031 | } else if ((strnicmp(data, "domain", 3) == 0) | |
1032 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
1033 | if (!value || !*value) { | |
1034 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
1035 | return 1; /* needs_arg; */ | |
1036 | } | |
1037 | /* BB are there cases in which a comma can be valid in | |
1038 | a domain name and need special handling? */ | |
3979877e | 1039 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
1040 | vol->domainname = value; |
1041 | cFYI(1, ("Domain name set")); | |
1042 | } else { | |
50c2f753 SF |
1043 | printk(KERN_WARNING "CIFS: domain name too " |
1044 | "long\n"); | |
1da177e4 LT |
1045 | return 1; |
1046 | } | |
50c2f753 SF |
1047 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
1048 | if (!value || !*value) { | |
1049 | printk(KERN_WARNING | |
1050 | "CIFS: invalid path prefix\n"); | |
1051 | return 1; /* needs_argument */ | |
1052 | } | |
1053 | if ((temp_len = strnlen(value, 1024)) < 1024) { | |
4523cc30 | 1054 | if (value[0] != '/') |
2fe87f02 | 1055 | temp_len++; /* missing leading slash */ |
50c2f753 SF |
1056 | vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); |
1057 | if (vol->prepath == NULL) | |
1058 | return 1; | |
4523cc30 | 1059 | if (value[0] != '/') { |
2fe87f02 | 1060 | vol->prepath[0] = '/'; |
50c2f753 | 1061 | strcpy(vol->prepath+1, value); |
2fe87f02 | 1062 | } else |
50c2f753 SF |
1063 | strcpy(vol->prepath, value); |
1064 | cFYI(1, ("prefix path %s", vol->prepath)); | |
1065 | } else { | |
1066 | printk(KERN_WARNING "CIFS: prefix too long\n"); | |
1067 | return 1; | |
1068 | } | |
1da177e4 LT |
1069 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
1070 | if (!value || !*value) { | |
63135e08 SF |
1071 | printk(KERN_WARNING "CIFS: invalid iocharset " |
1072 | "specified\n"); | |
1da177e4 LT |
1073 | return 1; /* needs_arg; */ |
1074 | } | |
1075 | if (strnlen(value, 65) < 65) { | |
50c2f753 | 1076 | if (strnicmp(value, "default", 7)) |
1da177e4 | 1077 | vol->iocharset = value; |
50c2f753 SF |
1078 | /* if iocharset not set then load_nls_default |
1079 | is used by caller */ | |
1080 | cFYI(1, ("iocharset set to %s", value)); | |
1da177e4 | 1081 | } else { |
63135e08 SF |
1082 | printk(KERN_WARNING "CIFS: iocharset name " |
1083 | "too long.\n"); | |
1da177e4 LT |
1084 | return 1; |
1085 | } | |
1086 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1087 | if (value && *value) { | |
1088 | vol->linux_uid = | |
1089 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1090 | vol->override_uid = 1; |
1da177e4 LT |
1091 | } |
1092 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1093 | if (value && *value) { | |
1094 | vol->linux_gid = | |
1095 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1096 | vol->override_gid = 1; |
1da177e4 LT |
1097 | } |
1098 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1099 | if (value && *value) { | |
1100 | vol->file_mode = | |
1101 | simple_strtoul(value, &value, 0); | |
1102 | } | |
1103 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1104 | if (value && *value) { | |
1105 | vol->dir_mode = | |
1106 | simple_strtoul(value, &value, 0); | |
1107 | } | |
1108 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1109 | if (value && *value) { | |
1110 | vol->dir_mode = | |
1111 | simple_strtoul(value, &value, 0); | |
1112 | } | |
1113 | } else if (strnicmp(data, "port", 4) == 0) { | |
1114 | if (value && *value) { | |
1115 | vol->port = | |
1116 | simple_strtoul(value, &value, 0); | |
1117 | } | |
1118 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1119 | if (value && *value) { | |
1120 | vol->rsize = | |
1121 | simple_strtoul(value, &value, 0); | |
1122 | } | |
1123 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1124 | if (value && *value) { | |
1125 | vol->wsize = | |
1126 | simple_strtoul(value, &value, 0); | |
1127 | } | |
1128 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1129 | if (value && *value) { | |
1130 | vol->sockopt = | |
1131 | simple_strtoul(value, &value, 0); | |
1132 | } | |
1133 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1134 | if (!value || !*value || (*value == ' ')) { | |
63135e08 | 1135 | cFYI(1, ("invalid (empty) netbiosname")); |
1da177e4 | 1136 | } else { |
50c2f753 SF |
1137 | memset(vol->source_rfc1001_name, 0x20, 15); |
1138 | for (i = 0; i < 15; i++) { | |
1139 | /* BB are there cases in which a comma can be | |
1da177e4 LT |
1140 | valid in this workstation netbios name (and need |
1141 | special handling)? */ | |
1142 | ||
1143 | /* We do not uppercase netbiosname for user */ | |
50c2f753 | 1144 | if (value[i] == 0) |
1da177e4 | 1145 | break; |
50c2f753 SF |
1146 | else |
1147 | vol->source_rfc1001_name[i] = | |
1148 | value[i]; | |
1da177e4 LT |
1149 | } |
1150 | /* The string has 16th byte zero still from | |
1151 | set at top of the function */ | |
50c2f753 SF |
1152 | if ((i == 15) && (value[i] != 0)) |
1153 | printk(KERN_WARNING "CIFS: netbiosname" | |
1154 | " longer than 15 truncated.\n"); | |
a10faeb2 SF |
1155 | } |
1156 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1157 | /* servernetbiosname specified override *SMBSERVER */ | |
1158 | if (!value || !*value || (*value == ' ')) { | |
467a8f8d | 1159 | cFYI(1, ("empty server netbiosname specified")); |
a10faeb2 SF |
1160 | } else { |
1161 | /* last byte, type, is 0x20 for servr type */ | |
50c2f753 | 1162 | memset(vol->target_rfc1001_name, 0x20, 16); |
a10faeb2 | 1163 | |
50c2f753 | 1164 | for (i = 0; i < 15; i++) { |
a10faeb2 | 1165 | /* BB are there cases in which a comma can be |
50c2f753 SF |
1166 | valid in this workstation netbios name |
1167 | (and need special handling)? */ | |
a10faeb2 | 1168 | |
50c2f753 SF |
1169 | /* user or mount helper must uppercase |
1170 | the netbiosname */ | |
1171 | if (value[i] == 0) | |
a10faeb2 SF |
1172 | break; |
1173 | else | |
50c2f753 SF |
1174 | vol->target_rfc1001_name[i] = |
1175 | value[i]; | |
a10faeb2 SF |
1176 | } |
1177 | /* The string has 16th byte zero still from | |
1178 | set at top of the function */ | |
50c2f753 SF |
1179 | if ((i == 15) && (value[i] != 0)) |
1180 | printk(KERN_WARNING "CIFS: server net" | |
1181 | "biosname longer than 15 truncated.\n"); | |
1da177e4 LT |
1182 | } |
1183 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1184 | /* ignore */ | |
1185 | } else if (strnicmp(data, "version", 3) == 0) { | |
1186 | /* ignore */ | |
50c2f753 | 1187 | } else if (strnicmp(data, "guest", 5) == 0) { |
1da177e4 LT |
1188 | /* ignore */ |
1189 | } else if (strnicmp(data, "rw", 2) == 0) { | |
4b18f2a9 | 1190 | vol->rw = true; |
edf1ae40 SF |
1191 | } else if (strnicmp(data, "noblocksend", 11) == 0) { |
1192 | vol->noblocksnd = 1; | |
1193 | } else if (strnicmp(data, "noautotune", 10) == 0) { | |
1194 | vol->noautotune = 1; | |
1da177e4 LT |
1195 | } else if ((strnicmp(data, "suid", 4) == 0) || |
1196 | (strnicmp(data, "nosuid", 6) == 0) || | |
1197 | (strnicmp(data, "exec", 4) == 0) || | |
1198 | (strnicmp(data, "noexec", 6) == 0) || | |
1199 | (strnicmp(data, "nodev", 5) == 0) || | |
1200 | (strnicmp(data, "noauto", 6) == 0) || | |
1201 | (strnicmp(data, "dev", 3) == 0)) { | |
1202 | /* The mount tool or mount.cifs helper (if present) | |
50c2f753 SF |
1203 | uses these opts to set flags, and the flags are read |
1204 | by the kernel vfs layer before we get here (ie | |
1205 | before read super) so there is no point trying to | |
1206 | parse these options again and set anything and it | |
1207 | is ok to just ignore them */ | |
1da177e4 LT |
1208 | continue; |
1209 | } else if (strnicmp(data, "ro", 2) == 0) { | |
4b18f2a9 | 1210 | vol->rw = false; |
1da177e4 LT |
1211 | } else if (strnicmp(data, "hard", 4) == 0) { |
1212 | vol->retry = 1; | |
1213 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1214 | vol->retry = 0; | |
1215 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1216 | vol->noperm = 0; | |
1217 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1218 | vol->noperm = 1; | |
6a0b4824 SF |
1219 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1220 | vol->remap = 1; | |
1221 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1222 | vol->remap = 0; | |
50c2f753 SF |
1223 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1224 | vol->sfu_emul = 1; | |
1225 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1226 | vol->sfu_emul = 0; | |
2c1b8615 SF |
1227 | } else if (strnicmp(data, "nodfs", 5) == 0) { |
1228 | vol->nodfs = 1; | |
ac67055e JA |
1229 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1230 | vol->posix_paths = 1; | |
1231 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1232 | vol->posix_paths = 0; | |
c18c842b SF |
1233 | } else if (strnicmp(data, "nounix", 6) == 0) { |
1234 | vol->no_linux_ext = 1; | |
1235 | } else if (strnicmp(data, "nolinux", 7) == 0) { | |
1236 | vol->no_linux_ext = 1; | |
50c2f753 | 1237 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
a10faeb2 | 1238 | (strnicmp(data, "ignorecase", 10) == 0)) { |
50c2f753 | 1239 | vol->nocase = 1; |
c46fa8ac SF |
1240 | } else if (strnicmp(data, "brl", 3) == 0) { |
1241 | vol->nobrl = 0; | |
50c2f753 | 1242 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1243 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1244 | vol->nobrl = 1; |
d3485d37 SF |
1245 | /* turn off mandatory locking in mode |
1246 | if remote locking is turned off since the | |
1247 | local vfs will do advisory */ | |
50c2f753 SF |
1248 | if (vol->file_mode == |
1249 | (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
d3485d37 | 1250 | vol->file_mode = S_IALLUGO; |
13a6e42a SF |
1251 | } else if (strnicmp(data, "forcemandatorylock", 9) == 0) { |
1252 | /* will take the shorter form "forcemand" as well */ | |
1253 | /* This mount option will force use of mandatory | |
1254 | (DOS/Windows style) byte range locks, instead of | |
1255 | using posix advisory byte range locks, even if the | |
1256 | Unix extensions are available and posix locks would | |
1257 | be supported otherwise. If Unix extensions are not | |
1258 | negotiated this has no effect since mandatory locks | |
1259 | would be used (mandatory locks is all that those | |
1260 | those servers support) */ | |
1261 | vol->mand_lock = 1; | |
1da177e4 LT |
1262 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1263 | vol->setuids = 1; | |
1264 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1265 | vol->setuids = 0; | |
d0a9c078 JL |
1266 | } else if (strnicmp(data, "dynperm", 7) == 0) { |
1267 | vol->dynperm = true; | |
1268 | } else if (strnicmp(data, "nodynperm", 9) == 0) { | |
1269 | vol->dynperm = false; | |
1da177e4 LT |
1270 | } else if (strnicmp(data, "nohard", 6) == 0) { |
1271 | vol->retry = 0; | |
1272 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1273 | vol->retry = 1; | |
1274 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1275 | vol->intr = 0; | |
1276 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1277 | vol->intr = 1; | |
be652445 SF |
1278 | } else if (strnicmp(data, "nostrictsync", 12) == 0) { |
1279 | vol->nostrictsync = 1; | |
1280 | } else if (strnicmp(data, "strictsync", 10) == 0) { | |
1281 | vol->nostrictsync = 0; | |
50c2f753 | 1282 | } else if (strnicmp(data, "serverino", 7) == 0) { |
1da177e4 | 1283 | vol->server_ino = 1; |
50c2f753 | 1284 | } else if (strnicmp(data, "noserverino", 9) == 0) { |
1da177e4 | 1285 | vol->server_ino = 0; |
50c2f753 | 1286 | } else if (strnicmp(data, "cifsacl", 7) == 0) { |
0a4b92c0 SF |
1287 | vol->cifs_acl = 1; |
1288 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1289 | vol->cifs_acl = 0; | |
50c2f753 | 1290 | } else if (strnicmp(data, "acl", 3) == 0) { |
1da177e4 | 1291 | vol->no_psx_acl = 0; |
50c2f753 | 1292 | } else if (strnicmp(data, "noacl", 5) == 0) { |
1da177e4 | 1293 | vol->no_psx_acl = 1; |
84210e91 SF |
1294 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
1295 | } else if (strnicmp(data, "locallease", 6) == 0) { | |
1296 | vol->local_lease = 1; | |
1297 | #endif | |
50c2f753 | 1298 | } else if (strnicmp(data, "sign", 4) == 0) { |
750d1151 | 1299 | vol->secFlg |= CIFSSEC_MUST_SIGN; |
95b1cb90 SF |
1300 | } else if (strnicmp(data, "seal", 4) == 0) { |
1301 | /* we do not do the following in secFlags because seal | |
1302 | is a per tree connection (mount) not a per socket | |
1303 | or per-smb connection option in the protocol */ | |
1304 | /* vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
1305 | vol->seal = 1; | |
50c2f753 | 1306 | } else if (strnicmp(data, "direct", 6) == 0) { |
1da177e4 | 1307 | vol->direct_io = 1; |
50c2f753 | 1308 | } else if (strnicmp(data, "forcedirectio", 13) == 0) { |
1da177e4 | 1309 | vol->direct_io = 1; |
50c2f753 | 1310 | } else if (strnicmp(data, "in6_addr", 8) == 0) { |
1da177e4 LT |
1311 | if (!value || !*value) { |
1312 | vol->in6_addr = NULL; | |
1313 | } else if (strnlen(value, 49) == 48) { | |
1314 | vol->in6_addr = value; | |
1315 | } else { | |
50c2f753 SF |
1316 | printk(KERN_WARNING "CIFS: ip v6 address not " |
1317 | "48 characters long\n"); | |
1da177e4 LT |
1318 | return 1; |
1319 | } | |
1320 | } else if (strnicmp(data, "noac", 4) == 0) { | |
50c2f753 SF |
1321 | printk(KERN_WARNING "CIFS: Mount option noac not " |
1322 | "supported. Instead set " | |
1323 | "/proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1da177e4 | 1324 | } else |
50c2f753 SF |
1325 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n", |
1326 | data); | |
1da177e4 LT |
1327 | } |
1328 | if (vol->UNC == NULL) { | |
4523cc30 | 1329 | if (devname == NULL) { |
50c2f753 SF |
1330 | printk(KERN_WARNING "CIFS: Missing UNC name for mount " |
1331 | "target\n"); | |
1da177e4 LT |
1332 | return 1; |
1333 | } | |
1334 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
50c2f753 | 1335 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1336 | if (vol->UNC == NULL) |
1da177e4 | 1337 | return 1; |
50c2f753 | 1338 | strcpy(vol->UNC, devname); |
1da177e4 LT |
1339 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1340 | vol->UNC[0] = '\\'; | |
1341 | vol->UNC[1] = '\\'; | |
1342 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
50c2f753 SF |
1343 | printk(KERN_WARNING "CIFS: UNC Path does not " |
1344 | "begin with // or \\\\ \n"); | |
1da177e4 LT |
1345 | return 1; |
1346 | } | |
7c5e628f IM |
1347 | value = strpbrk(vol->UNC+2, "/\\"); |
1348 | if (value) | |
1349 | *value = '\\'; | |
1da177e4 LT |
1350 | } else { |
1351 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1352 | return 1; | |
1353 | } | |
1354 | } | |
fb8c4b14 | 1355 | if (vol->UNCip == NULL) |
1da177e4 LT |
1356 | vol->UNCip = &vol->UNC[2]; |
1357 | ||
1358 | return 0; | |
1359 | } | |
1360 | ||
e7ddee90 | 1361 | static struct TCP_Server_Info * |
a9ac49d3 | 1362 | cifs_find_tcp_session(struct sockaddr_storage *addr) |
1da177e4 LT |
1363 | { |
1364 | struct list_head *tmp; | |
e7ddee90 JL |
1365 | struct TCP_Server_Info *server; |
1366 | struct sockaddr_in *addr4 = (struct sockaddr_in *) addr; | |
1367 | struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *) addr; | |
1368 | ||
1369 | write_lock(&cifs_tcp_ses_lock); | |
1370 | list_for_each(tmp, &cifs_tcp_ses_list) { | |
1371 | server = list_entry(tmp, struct TCP_Server_Info, | |
1372 | tcp_ses_list); | |
e7ddee90 JL |
1373 | /* |
1374 | * the demux thread can exit on its own while still in CifsNew | |
1375 | * so don't accept any sockets in that state. Since the | |
1376 | * tcpStatus never changes back to CifsNew it's safe to check | |
1377 | * for this without a lock. | |
1378 | */ | |
1379 | if (server->tcpStatus == CifsNew) | |
1b20d672 | 1380 | continue; |
1da177e4 | 1381 | |
a9ac49d3 | 1382 | if (addr->ss_family == AF_INET && |
e7ddee90 JL |
1383 | (addr4->sin_addr.s_addr != |
1384 | server->addr.sockAddr.sin_addr.s_addr)) | |
1385 | continue; | |
a9ac49d3 | 1386 | else if (addr->ss_family == AF_INET6 && |
0e2bedaa SF |
1387 | !ipv6_addr_equal(&server->addr.sockAddr6.sin6_addr, |
1388 | &addr6->sin6_addr)) | |
1b20d672 CG |
1389 | continue; |
1390 | ||
e7ddee90 JL |
1391 | ++server->srv_count; |
1392 | write_unlock(&cifs_tcp_ses_lock); | |
d82c2df5 | 1393 | cFYI(1, ("Existing tcp session with server found")); |
e7ddee90 | 1394 | return server; |
1da177e4 | 1395 | } |
e7ddee90 | 1396 | write_unlock(&cifs_tcp_ses_lock); |
1da177e4 LT |
1397 | return NULL; |
1398 | } | |
1b20d672 | 1399 | |
14fbf50d | 1400 | static void |
e7ddee90 | 1401 | cifs_put_tcp_session(struct TCP_Server_Info *server) |
1da177e4 | 1402 | { |
e7ddee90 | 1403 | struct task_struct *task; |
1b20d672 | 1404 | |
e7ddee90 JL |
1405 | write_lock(&cifs_tcp_ses_lock); |
1406 | if (--server->srv_count > 0) { | |
1407 | write_unlock(&cifs_tcp_ses_lock); | |
1408 | return; | |
1da177e4 | 1409 | } |
1b20d672 | 1410 | |
e7ddee90 JL |
1411 | list_del_init(&server->tcp_ses_list); |
1412 | write_unlock(&cifs_tcp_ses_lock); | |
dea570e0 | 1413 | |
e7ddee90 JL |
1414 | spin_lock(&GlobalMid_Lock); |
1415 | server->tcpStatus = CifsExiting; | |
1416 | spin_unlock(&GlobalMid_Lock); | |
dea570e0 | 1417 | |
e7ddee90 JL |
1418 | task = xchg(&server->tsk, NULL); |
1419 | if (task) | |
1420 | force_sig(SIGKILL, task); | |
1da177e4 LT |
1421 | } |
1422 | ||
63c038c2 JL |
1423 | static struct TCP_Server_Info * |
1424 | cifs_get_tcp_session(struct smb_vol *volume_info) | |
1425 | { | |
1426 | struct TCP_Server_Info *tcp_ses = NULL; | |
a9ac49d3 | 1427 | struct sockaddr_storage addr; |
63c038c2 JL |
1428 | struct sockaddr_in *sin_server = (struct sockaddr_in *) &addr; |
1429 | struct sockaddr_in6 *sin_server6 = (struct sockaddr_in6 *) &addr; | |
1430 | int rc; | |
1431 | ||
a9ac49d3 | 1432 | memset(&addr, 0, sizeof(struct sockaddr_storage)); |
63c038c2 JL |
1433 | |
1434 | if (volume_info->UNCip && volume_info->UNC) { | |
1435 | rc = cifs_inet_pton(AF_INET, volume_info->UNCip, | |
1436 | &sin_server->sin_addr.s_addr); | |
1437 | ||
1438 | if (rc <= 0) { | |
1439 | /* not ipv4 address, try ipv6 */ | |
1440 | rc = cifs_inet_pton(AF_INET6, volume_info->UNCip, | |
1441 | &sin_server6->sin6_addr.in6_u); | |
1442 | if (rc > 0) | |
a9ac49d3 | 1443 | addr.ss_family = AF_INET6; |
63c038c2 | 1444 | } else { |
a9ac49d3 | 1445 | addr.ss_family = AF_INET; |
63c038c2 JL |
1446 | } |
1447 | ||
1448 | if (rc <= 0) { | |
1449 | /* we failed translating address */ | |
1450 | rc = -EINVAL; | |
1451 | goto out_err; | |
1452 | } | |
1453 | ||
1454 | cFYI(1, ("UNC: %s ip: %s", volume_info->UNC, | |
1455 | volume_info->UNCip)); | |
1456 | } else if (volume_info->UNCip) { | |
1457 | /* BB using ip addr as tcp_ses name to connect to the | |
1458 | DFS root below */ | |
1459 | cERROR(1, ("Connecting to DFS root not implemented yet")); | |
1460 | rc = -EINVAL; | |
1461 | goto out_err; | |
1462 | } else /* which tcp_sess DFS root would we conect to */ { | |
1463 | cERROR(1, | |
1464 | ("CIFS mount error: No UNC path (e.g. -o " | |
1465 | "unc=//192.168.1.100/public) specified")); | |
1466 | rc = -EINVAL; | |
1467 | goto out_err; | |
1468 | } | |
1469 | ||
1470 | /* see if we already have a matching tcp_ses */ | |
1471 | tcp_ses = cifs_find_tcp_session(&addr); | |
1472 | if (tcp_ses) | |
1473 | return tcp_ses; | |
1474 | ||
1475 | tcp_ses = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); | |
1476 | if (!tcp_ses) { | |
1477 | rc = -ENOMEM; | |
1478 | goto out_err; | |
1479 | } | |
1480 | ||
1481 | tcp_ses->hostname = extract_hostname(volume_info->UNC); | |
1482 | if (IS_ERR(tcp_ses->hostname)) { | |
1483 | rc = PTR_ERR(tcp_ses->hostname); | |
1484 | goto out_err; | |
1485 | } | |
1486 | ||
1487 | tcp_ses->noblocksnd = volume_info->noblocksnd; | |
1488 | tcp_ses->noautotune = volume_info->noautotune; | |
1489 | atomic_set(&tcp_ses->inFlight, 0); | |
1490 | init_waitqueue_head(&tcp_ses->response_q); | |
1491 | init_waitqueue_head(&tcp_ses->request_q); | |
1492 | INIT_LIST_HEAD(&tcp_ses->pending_mid_q); | |
1493 | mutex_init(&tcp_ses->srv_mutex); | |
1494 | memcpy(tcp_ses->workstation_RFC1001_name, | |
1495 | volume_info->source_rfc1001_name, RFC1001_NAME_LEN_WITH_NULL); | |
1496 | memcpy(tcp_ses->server_RFC1001_name, | |
1497 | volume_info->target_rfc1001_name, RFC1001_NAME_LEN_WITH_NULL); | |
1498 | tcp_ses->sequence_number = 0; | |
1499 | INIT_LIST_HEAD(&tcp_ses->tcp_ses_list); | |
1500 | INIT_LIST_HEAD(&tcp_ses->smb_ses_list); | |
1501 | ||
1502 | /* | |
1503 | * at this point we are the only ones with the pointer | |
1504 | * to the struct since the kernel thread not created yet | |
1505 | * no need to spinlock this init of tcpStatus or srv_count | |
1506 | */ | |
1507 | tcp_ses->tcpStatus = CifsNew; | |
1508 | ++tcp_ses->srv_count; | |
1509 | ||
a9ac49d3 | 1510 | if (addr.ss_family == AF_INET6) { |
63c038c2 JL |
1511 | cFYI(1, ("attempting ipv6 connect")); |
1512 | /* BB should we allow ipv6 on port 139? */ | |
1513 | /* other OS never observed in Wild doing 139 with v6 */ | |
1514 | memcpy(&tcp_ses->addr.sockAddr6, sin_server6, | |
1515 | sizeof(struct sockaddr_in6)); | |
1516 | sin_server6->sin6_port = htons(volume_info->port); | |
d5c5605c | 1517 | rc = ipv6_connect(tcp_ses); |
63c038c2 JL |
1518 | } else { |
1519 | memcpy(&tcp_ses->addr.sockAddr, sin_server, | |
1520 | sizeof(struct sockaddr_in)); | |
1521 | sin_server->sin_port = htons(volume_info->port); | |
bcf4b106 | 1522 | rc = ipv4_connect(tcp_ses); |
63c038c2 JL |
1523 | } |
1524 | if (rc < 0) { | |
1525 | cERROR(1, ("Error connecting to socket. Aborting operation")); | |
1526 | goto out_err; | |
1527 | } | |
1528 | ||
1529 | /* | |
1530 | * since we're in a cifs function already, we know that | |
1531 | * this will succeed. No need for try_module_get(). | |
1532 | */ | |
1533 | __module_get(THIS_MODULE); | |
1534 | tcp_ses->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, | |
1535 | tcp_ses, "cifsd"); | |
1536 | if (IS_ERR(tcp_ses->tsk)) { | |
1537 | rc = PTR_ERR(tcp_ses->tsk); | |
1538 | cERROR(1, ("error %d create cifsd thread", rc)); | |
1539 | module_put(THIS_MODULE); | |
1540 | goto out_err; | |
1541 | } | |
1542 | ||
1543 | /* thread spawned, put it on the list */ | |
1544 | write_lock(&cifs_tcp_ses_lock); | |
1545 | list_add(&tcp_ses->tcp_ses_list, &cifs_tcp_ses_list); | |
1546 | write_unlock(&cifs_tcp_ses_lock); | |
1547 | ||
1548 | return tcp_ses; | |
1549 | ||
1550 | out_err: | |
1551 | if (tcp_ses) { | |
1552 | kfree(tcp_ses->hostname); | |
1553 | if (tcp_ses->ssocket) | |
1554 | sock_release(tcp_ses->ssocket); | |
1555 | kfree(tcp_ses); | |
1556 | } | |
1557 | return ERR_PTR(rc); | |
1558 | } | |
1559 | ||
14fbf50d JL |
1560 | static struct cifsSesInfo * |
1561 | cifs_find_smb_ses(struct TCP_Server_Info *server, char *username) | |
1da177e4 LT |
1562 | { |
1563 | struct list_head *tmp; | |
14fbf50d | 1564 | struct cifsSesInfo *ses; |
dea570e0 | 1565 | |
14fbf50d JL |
1566 | write_lock(&cifs_tcp_ses_lock); |
1567 | list_for_each(tmp, &server->smb_ses_list) { | |
1568 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); | |
1569 | if (strncmp(ses->userName, username, MAX_USERNAME_SIZE)) | |
dea570e0 SF |
1570 | continue; |
1571 | ||
14fbf50d JL |
1572 | ++ses->ses_count; |
1573 | write_unlock(&cifs_tcp_ses_lock); | |
1574 | return ses; | |
1575 | } | |
1576 | write_unlock(&cifs_tcp_ses_lock); | |
1577 | return NULL; | |
1578 | } | |
dea570e0 | 1579 | |
14fbf50d JL |
1580 | static void |
1581 | cifs_put_smb_ses(struct cifsSesInfo *ses) | |
1582 | { | |
1583 | int xid; | |
1584 | struct TCP_Server_Info *server = ses->server; | |
dea570e0 | 1585 | |
14fbf50d JL |
1586 | write_lock(&cifs_tcp_ses_lock); |
1587 | if (--ses->ses_count > 0) { | |
1588 | write_unlock(&cifs_tcp_ses_lock); | |
1589 | return; | |
1590 | } | |
dea570e0 | 1591 | |
14fbf50d JL |
1592 | list_del_init(&ses->smb_ses_list); |
1593 | write_unlock(&cifs_tcp_ses_lock); | |
dea570e0 | 1594 | |
14fbf50d JL |
1595 | if (ses->status == CifsGood) { |
1596 | xid = GetXid(); | |
1597 | CIFSSMBLogoff(xid, ses); | |
1598 | _FreeXid(xid); | |
1599 | } | |
1600 | sesInfoFree(ses); | |
1601 | cifs_put_tcp_session(server); | |
1602 | } | |
dea570e0 | 1603 | |
f1987b44 JL |
1604 | static struct cifsTconInfo * |
1605 | cifs_find_tcon(struct cifsSesInfo *ses, const char *unc) | |
1606 | { | |
1607 | struct list_head *tmp; | |
1608 | struct cifsTconInfo *tcon; | |
1609 | ||
1610 | write_lock(&cifs_tcp_ses_lock); | |
1611 | list_for_each(tmp, &ses->tcon_list) { | |
1612 | tcon = list_entry(tmp, struct cifsTconInfo, tcon_list); | |
1613 | if (tcon->tidStatus == CifsExiting) | |
1614 | continue; | |
1615 | if (strncmp(tcon->treeName, unc, MAX_TREE_SIZE)) | |
dea570e0 SF |
1616 | continue; |
1617 | ||
f1987b44 JL |
1618 | ++tcon->tc_count; |
1619 | write_unlock(&cifs_tcp_ses_lock); | |
dea570e0 | 1620 | return tcon; |
1da177e4 | 1621 | } |
f1987b44 | 1622 | write_unlock(&cifs_tcp_ses_lock); |
1da177e4 LT |
1623 | return NULL; |
1624 | } | |
1625 | ||
f1987b44 JL |
1626 | static void |
1627 | cifs_put_tcon(struct cifsTconInfo *tcon) | |
1628 | { | |
1629 | int xid; | |
1630 | struct cifsSesInfo *ses = tcon->ses; | |
1631 | ||
1632 | write_lock(&cifs_tcp_ses_lock); | |
1633 | if (--tcon->tc_count > 0) { | |
1634 | write_unlock(&cifs_tcp_ses_lock); | |
1635 | return; | |
1636 | } | |
1637 | ||
1638 | list_del_init(&tcon->tcon_list); | |
1639 | write_unlock(&cifs_tcp_ses_lock); | |
1640 | ||
1641 | xid = GetXid(); | |
1642 | CIFSSMBTDis(xid, tcon); | |
1643 | _FreeXid(xid); | |
1644 | ||
1645 | DeleteTconOplockQEntries(tcon); | |
1646 | tconInfoFree(tcon); | |
1647 | cifs_put_smb_ses(ses); | |
1648 | } | |
1649 | ||
1da177e4 | 1650 | int |
50c2f753 SF |
1651 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, |
1652 | const struct nls_table *nls_codepage, unsigned int *pnum_referrals, | |
366781c1 | 1653 | struct dfs_info3_param **preferrals, int remap) |
1da177e4 LT |
1654 | { |
1655 | char *temp_unc; | |
1656 | int rc = 0; | |
1657 | ||
1658 | *pnum_referrals = 0; | |
366781c1 | 1659 | *preferrals = NULL; |
1da177e4 LT |
1660 | |
1661 | if (pSesInfo->ipc_tid == 0) { | |
1662 | temp_unc = kmalloc(2 /* for slashes */ + | |
50c2f753 SF |
1663 | strnlen(pSesInfo->serverName, |
1664 | SERVER_NAME_LEN_WITH_NULL * 2) | |
1da177e4 LT |
1665 | + 1 + 4 /* slash IPC$ */ + 2, |
1666 | GFP_KERNEL); | |
1667 | if (temp_unc == NULL) | |
1668 | return -ENOMEM; | |
1669 | temp_unc[0] = '\\'; | |
1670 | temp_unc[1] = '\\'; | |
1671 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1672 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1673 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1674 | cFYI(1, | |
50c2f753 | 1675 | ("CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid)); |
1da177e4 LT |
1676 | kfree(temp_unc); |
1677 | } | |
1678 | if (rc == 0) | |
c2cf07d5 | 1679 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, |
737b758c | 1680 | pnum_referrals, nls_codepage, remap); |
366781c1 SF |
1681 | /* BB map targetUNCs to dfs_info3 structures, here or |
1682 | in CIFSGetDFSRefer BB */ | |
1da177e4 LT |
1683 | |
1684 | return rc; | |
1685 | } | |
1686 | ||
09e50d55 JL |
1687 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
1688 | static struct lock_class_key cifs_key[2]; | |
1689 | static struct lock_class_key cifs_slock_key[2]; | |
1690 | ||
1691 | static inline void | |
1692 | cifs_reclassify_socket4(struct socket *sock) | |
1693 | { | |
1694 | struct sock *sk = sock->sk; | |
1695 | BUG_ON(sock_owned_by_user(sk)); | |
1696 | sock_lock_init_class_and_name(sk, "slock-AF_INET-CIFS", | |
1697 | &cifs_slock_key[0], "sk_lock-AF_INET-CIFS", &cifs_key[0]); | |
1698 | } | |
1699 | ||
1700 | static inline void | |
1701 | cifs_reclassify_socket6(struct socket *sock) | |
1702 | { | |
1703 | struct sock *sk = sock->sk; | |
1704 | BUG_ON(sock_owned_by_user(sk)); | |
1705 | sock_lock_init_class_and_name(sk, "slock-AF_INET6-CIFS", | |
1706 | &cifs_slock_key[1], "sk_lock-AF_INET6-CIFS", &cifs_key[1]); | |
1707 | } | |
1708 | #else | |
1709 | static inline void | |
1710 | cifs_reclassify_socket4(struct socket *sock) | |
1711 | { | |
1712 | } | |
1713 | ||
1714 | static inline void | |
1715 | cifs_reclassify_socket6(struct socket *sock) | |
1716 | { | |
1717 | } | |
1718 | #endif | |
1719 | ||
1da177e4 | 1720 | /* See RFC1001 section 14 on representation of Netbios names */ |
50c2f753 | 1721 | static void rfc1002mangle(char *target, char *source, unsigned int length) |
1da177e4 | 1722 | { |
50c2f753 | 1723 | unsigned int i, j; |
1da177e4 | 1724 | |
50c2f753 | 1725 | for (i = 0, j = 0; i < (length); i++) { |
1da177e4 LT |
1726 | /* mask a nibble at a time and encode */ |
1727 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1728 | target[j+1] = 'A' + (0x0F & source[i]); | |
50c2f753 | 1729 | j += 2; |
1da177e4 LT |
1730 | } |
1731 | ||
1732 | } | |
1733 | ||
1734 | ||
1735 | static int | |
bcf4b106 | 1736 | ipv4_connect(struct TCP_Server_Info *server) |
1da177e4 LT |
1737 | { |
1738 | int rc = 0; | |
bcf4b106 | 1739 | bool connected = false; |
1da177e4 | 1740 | __be16 orig_port = 0; |
bcf4b106 | 1741 | struct socket *socket = server->ssocket; |
1da177e4 | 1742 | |
bcf4b106 | 1743 | if (socket == NULL) { |
50c2f753 | 1744 | rc = sock_create_kern(PF_INET, SOCK_STREAM, |
bcf4b106 | 1745 | IPPROTO_TCP, &socket); |
1da177e4 | 1746 | if (rc < 0) { |
50c2f753 | 1747 | cERROR(1, ("Error %d creating socket", rc)); |
1da177e4 | 1748 | return rc; |
1da177e4 | 1749 | } |
bcf4b106 JL |
1750 | |
1751 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1752 | cFYI(1, ("Socket created")); | |
1753 | server->ssocket = socket; | |
1754 | socket->sk->sk_allocation = GFP_NOFS; | |
1755 | cifs_reclassify_socket4(socket); | |
1da177e4 LT |
1756 | } |
1757 | ||
bcf4b106 JL |
1758 | /* user overrode default port */ |
1759 | if (server->addr.sockAddr.sin_port) { | |
1760 | rc = socket->ops->connect(socket, (struct sockaddr *) | |
1761 | &server->addr.sockAddr, | |
1762 | sizeof(struct sockaddr_in), 0); | |
1da177e4 | 1763 | if (rc >= 0) |
bcf4b106 | 1764 | connected = true; |
50c2f753 | 1765 | } |
1da177e4 | 1766 | |
fb8c4b14 | 1767 | if (!connected) { |
50c2f753 | 1768 | /* save original port so we can retry user specified port |
1da177e4 | 1769 | later if fall back ports fail this time */ |
bcf4b106 | 1770 | orig_port = server->addr.sockAddr.sin_port; |
1da177e4 LT |
1771 | |
1772 | /* do not retry on the same port we just failed on */ | |
bcf4b106 JL |
1773 | if (server->addr.sockAddr.sin_port != htons(CIFS_PORT)) { |
1774 | server->addr.sockAddr.sin_port = htons(CIFS_PORT); | |
1775 | rc = socket->ops->connect(socket, | |
1776 | (struct sockaddr *) | |
1777 | &server->addr.sockAddr, | |
1778 | sizeof(struct sockaddr_in), 0); | |
1da177e4 | 1779 | if (rc >= 0) |
bcf4b106 | 1780 | connected = true; |
1da177e4 LT |
1781 | } |
1782 | } | |
1783 | if (!connected) { | |
bcf4b106 JL |
1784 | server->addr.sockAddr.sin_port = htons(RFC1001_PORT); |
1785 | rc = socket->ops->connect(socket, (struct sockaddr *) | |
1786 | &server->addr.sockAddr, | |
6345a3a8 | 1787 | sizeof(struct sockaddr_in), 0); |
50c2f753 | 1788 | if (rc >= 0) |
bcf4b106 | 1789 | connected = true; |
1da177e4 LT |
1790 | } |
1791 | ||
1792 | /* give up here - unless we want to retry on different | |
1793 | protocol families some day */ | |
1794 | if (!connected) { | |
fb8c4b14 | 1795 | if (orig_port) |
bcf4b106 | 1796 | server->addr.sockAddr.sin_port = orig_port; |
50c2f753 | 1797 | cFYI(1, ("Error %d connecting to server via ipv4", rc)); |
bcf4b106 JL |
1798 | sock_release(socket); |
1799 | server->ssocket = NULL; | |
1da177e4 LT |
1800 | return rc; |
1801 | } | |
bcf4b106 JL |
1802 | |
1803 | ||
1804 | /* | |
1805 | * Eventually check for other socket options to change from | |
1806 | * the default. sock_setsockopt not used because it expects | |
1807 | * user space buffer | |
1808 | */ | |
1809 | socket->sk->sk_rcvtimeo = 7 * HZ; | |
da505c38 | 1810 | socket->sk->sk_sndtimeo = 5 * HZ; |
edf1ae40 | 1811 | |
b387eaeb | 1812 | /* make the bufsizes depend on wsize/rsize and max requests */ |
bcf4b106 JL |
1813 | if (server->noautotune) { |
1814 | if (socket->sk->sk_sndbuf < (200 * 1024)) | |
1815 | socket->sk->sk_sndbuf = 200 * 1024; | |
1816 | if (socket->sk->sk_rcvbuf < (140 * 1024)) | |
1817 | socket->sk->sk_rcvbuf = 140 * 1024; | |
edf1ae40 | 1818 | } |
1da177e4 | 1819 | |
bcf4b106 JL |
1820 | cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", |
1821 | socket->sk->sk_sndbuf, | |
1822 | socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo)); | |
1823 | ||
1da177e4 | 1824 | /* send RFC1001 sessinit */ |
bcf4b106 | 1825 | if (server->addr.sockAddr.sin_port == htons(RFC1001_PORT)) { |
1da177e4 | 1826 | /* some servers require RFC1001 sessinit before sending |
50c2f753 | 1827 | negprot - BB check reconnection in case where second |
1da177e4 | 1828 | sessinit is sent but no second negprot */ |
50c2f753 SF |
1829 | struct rfc1002_session_packet *ses_init_buf; |
1830 | struct smb_hdr *smb_buf; | |
1831 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), | |
1832 | GFP_KERNEL); | |
fb8c4b14 | 1833 | if (ses_init_buf) { |
1da177e4 | 1834 | ses_init_buf->trailer.session_req.called_len = 32; |
bcf4b106 JL |
1835 | if (server->server_RFC1001_name && |
1836 | server->server_RFC1001_name[0] != 0) | |
8ecaf67a JL |
1837 | rfc1002mangle(ses_init_buf->trailer. |
1838 | session_req.called_name, | |
bcf4b106 | 1839 | server->server_RFC1001_name, |
8ecaf67a | 1840 | RFC1001_NAME_LEN_WITH_NULL); |
bcf4b106 | 1841 | else |
8ecaf67a JL |
1842 | rfc1002mangle(ses_init_buf->trailer. |
1843 | session_req.called_name, | |
1844 | DEFAULT_CIFS_CALLED_NAME, | |
1845 | RFC1001_NAME_LEN_WITH_NULL); | |
a10faeb2 | 1846 | |
1da177e4 | 1847 | ses_init_buf->trailer.session_req.calling_len = 32; |
bcf4b106 | 1848 | |
1da177e4 LT |
1849 | /* calling name ends in null (byte 16) from old smb |
1850 | convention. */ | |
bcf4b106 JL |
1851 | if (server->workstation_RFC1001_name && |
1852 | server->workstation_RFC1001_name[0] != 0) | |
8ecaf67a JL |
1853 | rfc1002mangle(ses_init_buf->trailer. |
1854 | session_req.calling_name, | |
bcf4b106 | 1855 | server->workstation_RFC1001_name, |
8ecaf67a | 1856 | RFC1001_NAME_LEN_WITH_NULL); |
bcf4b106 | 1857 | else |
8ecaf67a JL |
1858 | rfc1002mangle(ses_init_buf->trailer. |
1859 | session_req.calling_name, | |
1860 | "LINUX_CIFS_CLNT", | |
1861 | RFC1001_NAME_LEN_WITH_NULL); | |
bcf4b106 | 1862 | |
1da177e4 LT |
1863 | ses_init_buf->trailer.session_req.scope1 = 0; |
1864 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1865 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1866 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1867 | smb_buf->smb_buf_length = 0x81000044; | |
0496e02d | 1868 | rc = smb_send(server, smb_buf, 0x44); |
1da177e4 | 1869 | kfree(ses_init_buf); |
50c2f753 | 1870 | msleep(1); /* RFC1001 layer in at least one server |
083d3a2c SF |
1871 | requires very short break before negprot |
1872 | presumably because not expecting negprot | |
1873 | to follow so fast. This is a simple | |
50c2f753 | 1874 | solution that works without |
083d3a2c SF |
1875 | complicating the code and causes no |
1876 | significant slowing down on mount | |
1877 | for everyone else */ | |
1da177e4 | 1878 | } |
50c2f753 | 1879 | /* else the negprot may still work without this |
1da177e4 | 1880 | even though malloc failed */ |
50c2f753 | 1881 | |
1da177e4 | 1882 | } |
50c2f753 | 1883 | |
1da177e4 LT |
1884 | return rc; |
1885 | } | |
1886 | ||
1887 | static int | |
d5c5605c | 1888 | ipv6_connect(struct TCP_Server_Info *server) |
1da177e4 LT |
1889 | { |
1890 | int rc = 0; | |
d5c5605c | 1891 | bool connected = false; |
1da177e4 | 1892 | __be16 orig_port = 0; |
d5c5605c | 1893 | struct socket *socket = server->ssocket; |
1da177e4 | 1894 | |
d5c5605c | 1895 | if (socket == NULL) { |
50c2f753 | 1896 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, |
d5c5605c | 1897 | IPPROTO_TCP, &socket); |
1da177e4 | 1898 | if (rc < 0) { |
50c2f753 | 1899 | cERROR(1, ("Error %d creating ipv6 socket", rc)); |
d5c5605c | 1900 | socket = NULL; |
1da177e4 | 1901 | return rc; |
1da177e4 | 1902 | } |
1da177e4 | 1903 | |
d5c5605c JL |
1904 | /* BB other socket options to set KEEPALIVE, NODELAY? */ |
1905 | cFYI(1, ("ipv6 Socket created")); | |
1906 | server->ssocket = socket; | |
1907 | socket->sk->sk_allocation = GFP_NOFS; | |
1908 | cifs_reclassify_socket6(socket); | |
1909 | } | |
1da177e4 | 1910 | |
d5c5605c JL |
1911 | /* user overrode default port */ |
1912 | if (server->addr.sockAddr6.sin6_port) { | |
1913 | rc = socket->ops->connect(socket, | |
1914 | (struct sockaddr *) &server->addr.sockAddr6, | |
6345a3a8 | 1915 | sizeof(struct sockaddr_in6), 0); |
1da177e4 | 1916 | if (rc >= 0) |
d5c5605c | 1917 | connected = true; |
50c2f753 | 1918 | } |
1da177e4 | 1919 | |
fb8c4b14 | 1920 | if (!connected) { |
50c2f753 | 1921 | /* save original port so we can retry user specified port |
1da177e4 LT |
1922 | later if fall back ports fail this time */ |
1923 | ||
d5c5605c | 1924 | orig_port = server->addr.sockAddr6.sin6_port; |
1da177e4 | 1925 | /* do not retry on the same port we just failed on */ |
d5c5605c JL |
1926 | if (server->addr.sockAddr6.sin6_port != htons(CIFS_PORT)) { |
1927 | server->addr.sockAddr6.sin6_port = htons(CIFS_PORT); | |
1928 | rc = socket->ops->connect(socket, (struct sockaddr *) | |
1929 | &server->addr.sockAddr6, | |
6345a3a8 | 1930 | sizeof(struct sockaddr_in6), 0); |
1da177e4 | 1931 | if (rc >= 0) |
d5c5605c | 1932 | connected = true; |
1da177e4 LT |
1933 | } |
1934 | } | |
1935 | if (!connected) { | |
d5c5605c JL |
1936 | server->addr.sockAddr6.sin6_port = htons(RFC1001_PORT); |
1937 | rc = socket->ops->connect(socket, (struct sockaddr *) | |
1938 | &server->addr.sockAddr6, | |
1939 | sizeof(struct sockaddr_in6), 0); | |
50c2f753 | 1940 | if (rc >= 0) |
d5c5605c | 1941 | connected = true; |
1da177e4 LT |
1942 | } |
1943 | ||
1944 | /* give up here - unless we want to retry on different | |
1945 | protocol families some day */ | |
1946 | if (!connected) { | |
fb8c4b14 | 1947 | if (orig_port) |
d5c5605c | 1948 | server->addr.sockAddr6.sin6_port = orig_port; |
50c2f753 | 1949 | cFYI(1, ("Error %d connecting to server via ipv6", rc)); |
d5c5605c JL |
1950 | sock_release(socket); |
1951 | server->ssocket = NULL; | |
1da177e4 LT |
1952 | return rc; |
1953 | } | |
edf1ae40 | 1954 | |
d5c5605c JL |
1955 | /* |
1956 | * Eventually check for other socket options to change from | |
1957 | * the default. sock_setsockopt not used because it expects | |
1958 | * user space buffer | |
1959 | */ | |
1960 | socket->sk->sk_rcvtimeo = 7 * HZ; | |
da505c38 | 1961 | socket->sk->sk_sndtimeo = 5 * HZ; |
d5c5605c | 1962 | server->ssocket = socket; |
50c2f753 | 1963 | |
1da177e4 LT |
1964 | return rc; |
1965 | } | |
1966 | ||
50c2f753 SF |
1967 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon, |
1968 | struct super_block *sb, struct smb_vol *vol_info) | |
8af18971 SF |
1969 | { |
1970 | /* if we are reconnecting then should we check to see if | |
1971 | * any requested capabilities changed locally e.g. via | |
1972 | * remount but we can not do much about it here | |
1973 | * if they have (even if we could detect it by the following) | |
1974 | * Perhaps we could add a backpointer to array of sb from tcon | |
1975 | * or if we change to make all sb to same share the same | |
1976 | * sb as NFS - then we only have one backpointer to sb. | |
1977 | * What if we wanted to mount the server share twice once with | |
1978 | * and once without posixacls or posix paths? */ | |
1979 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
50c2f753 | 1980 | |
c18c842b SF |
1981 | if (vol_info && vol_info->no_linux_ext) { |
1982 | tcon->fsUnixInfo.Capability = 0; | |
1983 | tcon->unix_ext = 0; /* Unix Extensions disabled */ | |
1984 | cFYI(1, ("Linux protocol extensions disabled")); | |
1985 | return; | |
1986 | } else if (vol_info) | |
1987 | tcon->unix_ext = 1; /* Unix Extensions supported */ | |
1988 | ||
1989 | if (tcon->unix_ext == 0) { | |
1990 | cFYI(1, ("Unix extensions disabled so not set on reconnect")); | |
1991 | return; | |
1992 | } | |
50c2f753 | 1993 | |
fb8c4b14 | 1994 | if (!CIFSSMBQFSUnixInfo(xid, tcon)) { |
8af18971 | 1995 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
50c2f753 | 1996 | |
8af18971 SF |
1997 | /* check for reconnect case in which we do not |
1998 | want to change the mount behavior if we can avoid it */ | |
fb8c4b14 | 1999 | if (vol_info == NULL) { |
50c2f753 | 2000 | /* turn off POSIX ACL and PATHNAMES if not set |
8af18971 SF |
2001 | originally at mount time */ |
2002 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) | |
2003 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
11b6d645 IM |
2004 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
2005 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) | |
2006 | cERROR(1, ("POSIXPATH support change")); | |
8af18971 | 2007 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
11b6d645 IM |
2008 | } else if ((cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
2009 | cERROR(1, ("possible reconnect error")); | |
2010 | cERROR(1, | |
2011 | ("server disabled POSIX path support")); | |
2012 | } | |
8af18971 | 2013 | } |
50c2f753 | 2014 | |
8af18971 | 2015 | cap &= CIFS_UNIX_CAP_MASK; |
75865f8c | 2016 | if (vol_info && vol_info->no_psx_acl) |
8af18971 | 2017 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
75865f8c | 2018 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
fb8c4b14 SF |
2019 | cFYI(1, ("negotiated posix acl support")); |
2020 | if (sb) | |
8af18971 SF |
2021 | sb->s_flags |= MS_POSIXACL; |
2022 | } | |
2023 | ||
75865f8c | 2024 | if (vol_info && vol_info->posix_paths == 0) |
8af18971 | 2025 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
75865f8c | 2026 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
fb8c4b14 | 2027 | cFYI(1, ("negotiate posix pathnames")); |
75865f8c | 2028 | if (sb) |
50c2f753 | 2029 | CIFS_SB(sb)->mnt_cifs_flags |= |
8af18971 SF |
2030 | CIFS_MOUNT_POSIX_PATHS; |
2031 | } | |
50c2f753 | 2032 | |
984acfe1 SF |
2033 | /* We might be setting the path sep back to a different |
2034 | form if we are reconnecting and the server switched its | |
50c2f753 | 2035 | posix path capability for this share */ |
75865f8c | 2036 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
984acfe1 | 2037 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
75865f8c SF |
2038 | |
2039 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { | |
2040 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { | |
2041 | CIFS_SB(sb)->rsize = 127 * 1024; | |
90c81e0b SF |
2042 | cFYI(DBG2, |
2043 | ("larger reads not supported by srv")); | |
75865f8c SF |
2044 | } |
2045 | } | |
50c2f753 SF |
2046 | |
2047 | ||
2048 | cFYI(1, ("Negotiate caps 0x%x", (int)cap)); | |
8af18971 | 2049 | #ifdef CONFIG_CIFS_DEBUG2 |
75865f8c | 2050 | if (cap & CIFS_UNIX_FCNTL_CAP) |
fb8c4b14 | 2051 | cFYI(1, ("FCNTL cap")); |
75865f8c | 2052 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
fb8c4b14 | 2053 | cFYI(1, ("EXTATTR cap")); |
75865f8c | 2054 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
fb8c4b14 | 2055 | cFYI(1, ("POSIX path cap")); |
75865f8c | 2056 | if (cap & CIFS_UNIX_XATTR_CAP) |
fb8c4b14 | 2057 | cFYI(1, ("XATTR cap")); |
75865f8c | 2058 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
fb8c4b14 | 2059 | cFYI(1, ("POSIX ACL cap")); |
75865f8c | 2060 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
fb8c4b14 | 2061 | cFYI(1, ("very large read cap")); |
75865f8c | 2062 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) |
fb8c4b14 | 2063 | cFYI(1, ("very large write cap")); |
8af18971 SF |
2064 | #endif /* CIFS_DEBUG2 */ |
2065 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
442aa310 | 2066 | if (vol_info == NULL) { |
5a44b319 | 2067 | cFYI(1, ("resetting capabilities failed")); |
442aa310 | 2068 | } else |
5a44b319 SF |
2069 | cERROR(1, ("Negotiating Unix capabilities " |
2070 | "with the server failed. Consider " | |
2071 | "mounting with the Unix Extensions\n" | |
2072 | "disabled, if problems are found, " | |
2073 | "by specifying the nounix mount " | |
2224f4e5 | 2074 | "option.")); |
5a44b319 | 2075 | |
8af18971 SF |
2076 | } |
2077 | } | |
2078 | } | |
2079 | ||
03a143c9 SF |
2080 | static void |
2081 | convert_delimiter(char *path, char delim) | |
2082 | { | |
2083 | int i; | |
c2d68ea6 | 2084 | char old_delim; |
03a143c9 SF |
2085 | |
2086 | if (path == NULL) | |
2087 | return; | |
2088 | ||
582d21e5 | 2089 | if (delim == '/') |
c2d68ea6 SF |
2090 | old_delim = '\\'; |
2091 | else | |
2092 | old_delim = '/'; | |
2093 | ||
03a143c9 | 2094 | for (i = 0; path[i] != '\0'; i++) { |
c2d68ea6 | 2095 | if (path[i] == old_delim) |
03a143c9 SF |
2096 | path[i] = delim; |
2097 | } | |
2098 | } | |
2099 | ||
3b795210 SF |
2100 | static void setup_cifs_sb(struct smb_vol *pvolume_info, |
2101 | struct cifs_sb_info *cifs_sb) | |
b1c8d2b4 | 2102 | { |
3b795210 SF |
2103 | if (pvolume_info->rsize > CIFSMaxBufSize) { |
2104 | cERROR(1, ("rsize %d too large, using MaxBufSize", | |
2105 | pvolume_info->rsize)); | |
2106 | cifs_sb->rsize = CIFSMaxBufSize; | |
2107 | } else if ((pvolume_info->rsize) && | |
2108 | (pvolume_info->rsize <= CIFSMaxBufSize)) | |
2109 | cifs_sb->rsize = pvolume_info->rsize; | |
2110 | else /* default */ | |
2111 | cifs_sb->rsize = CIFSMaxBufSize; | |
2112 | ||
2113 | if (pvolume_info->wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { | |
2114 | cERROR(1, ("wsize %d too large, using 4096 instead", | |
2115 | pvolume_info->wsize)); | |
2116 | cifs_sb->wsize = 4096; | |
2117 | } else if (pvolume_info->wsize) | |
2118 | cifs_sb->wsize = pvolume_info->wsize; | |
2119 | else | |
2120 | cifs_sb->wsize = min_t(const int, | |
2121 | PAGEVEC_SIZE * PAGE_CACHE_SIZE, | |
2122 | 127*1024); | |
2123 | /* old default of CIFSMaxBufSize was too small now | |
2124 | that SMB Write2 can send multiple pages in kvec. | |
2125 | RFC1001 does not describe what happens when frame | |
2126 | bigger than 128K is sent so use that as max in | |
2127 | conjunction with 52K kvec constraint on arch with 4K | |
2128 | page size */ | |
2129 | ||
2130 | if (cifs_sb->rsize < 2048) { | |
2131 | cifs_sb->rsize = 2048; | |
2132 | /* Windows ME may prefer this */ | |
2133 | cFYI(1, ("readsize set to minimum: 2048")); | |
2134 | } | |
2135 | /* calculate prepath */ | |
2136 | cifs_sb->prepath = pvolume_info->prepath; | |
2137 | if (cifs_sb->prepath) { | |
2138 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); | |
2139 | /* we can not convert the / to \ in the path | |
2140 | separators in the prefixpath yet because we do not | |
2141 | know (until reset_cifs_unix_caps is called later) | |
2142 | whether POSIX PATH CAP is available. We normalize | |
2143 | the / to \ after reset_cifs_unix_caps is called */ | |
2144 | pvolume_info->prepath = NULL; | |
2145 | } else | |
2146 | cifs_sb->prepathlen = 0; | |
2147 | cifs_sb->mnt_uid = pvolume_info->linux_uid; | |
2148 | cifs_sb->mnt_gid = pvolume_info->linux_gid; | |
2149 | cifs_sb->mnt_file_mode = pvolume_info->file_mode; | |
2150 | cifs_sb->mnt_dir_mode = pvolume_info->dir_mode; | |
2151 | cFYI(1, ("file mode: 0x%x dir mode: 0x%x", | |
2152 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode)); | |
2153 | ||
2154 | if (pvolume_info->noperm) | |
2155 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; | |
2156 | if (pvolume_info->setuids) | |
2157 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; | |
2158 | if (pvolume_info->server_ino) | |
2159 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; | |
2160 | if (pvolume_info->remap) | |
2161 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; | |
2162 | if (pvolume_info->no_xattr) | |
2163 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; | |
2164 | if (pvolume_info->sfu_emul) | |
2165 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; | |
2166 | if (pvolume_info->nobrl) | |
2167 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; | |
be652445 | 2168 | if (pvolume_info->nostrictsync) |
4717bed6 | 2169 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOSSYNC; |
13a6e42a SF |
2170 | if (pvolume_info->mand_lock) |
2171 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOPOSIXBRL; | |
3b795210 SF |
2172 | if (pvolume_info->cifs_acl) |
2173 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; | |
2174 | if (pvolume_info->override_uid) | |
2175 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; | |
2176 | if (pvolume_info->override_gid) | |
2177 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; | |
2178 | if (pvolume_info->dynperm) | |
2179 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM; | |
2180 | if (pvolume_info->direct_io) { | |
2181 | cFYI(1, ("mounting share using direct i/o")); | |
2182 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; | |
2183 | } | |
2184 | ||
2185 | if ((pvolume_info->cifs_acl) && (pvolume_info->dynperm)) | |
2186 | cERROR(1, ("mount option dynperm ignored if cifsacl " | |
2187 | "mount option supported")); | |
b1c8d2b4 JL |
2188 | } |
2189 | ||
e4cce94c IM |
2190 | static int |
2191 | is_path_accessible(int xid, struct cifsTconInfo *tcon, | |
2192 | struct cifs_sb_info *cifs_sb, const char *full_path) | |
2193 | { | |
2194 | int rc; | |
2195 | __u64 inode_num; | |
2196 | FILE_ALL_INFO *pfile_info; | |
2197 | ||
2198 | rc = CIFSGetSrvInodeNumber(xid, tcon, full_path, &inode_num, | |
2199 | cifs_sb->local_nls, | |
2200 | cifs_sb->mnt_cifs_flags & | |
2201 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
2202 | if (rc != -EOPNOTSUPP) | |
2203 | return rc; | |
2204 | ||
2205 | pfile_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); | |
2206 | if (pfile_info == NULL) | |
2207 | return -ENOMEM; | |
2208 | ||
2209 | rc = CIFSSMBQPathInfo(xid, tcon, full_path, pfile_info, | |
2210 | 0 /* not legacy */, cifs_sb->local_nls, | |
2211 | cifs_sb->mnt_cifs_flags & | |
2212 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
2213 | kfree(pfile_info); | |
2214 | return rc; | |
2215 | } | |
2216 | ||
1bfe73c2 IM |
2217 | static void |
2218 | cleanup_volume_info(struct smb_vol **pvolume_info) | |
2219 | { | |
2220 | struct smb_vol *volume_info; | |
2221 | ||
2222 | if (!pvolume_info && !*pvolume_info) | |
2223 | return; | |
2224 | ||
2225 | volume_info = *pvolume_info; | |
2226 | kzfree(volume_info->password); | |
2227 | kfree(volume_info->UNC); | |
2228 | kfree(volume_info->prepath); | |
2229 | kfree(volume_info); | |
2230 | *pvolume_info = NULL; | |
2231 | return; | |
2232 | } | |
2233 | ||
2d6d589d | 2234 | #ifdef CONFIG_CIFS_DFS_UPCALL |
1bfe73c2 IM |
2235 | /* build_path_to_root returns full path to root when |
2236 | * we do not have an exiting connection (tcon) */ | |
2237 | static char * | |
2238 | build_unc_path_to_root(const struct smb_vol *volume_info, | |
2239 | const struct cifs_sb_info *cifs_sb) | |
2240 | { | |
2241 | char *full_path; | |
2242 | ||
2243 | int unc_len = strnlen(volume_info->UNC, MAX_TREE_SIZE + 1); | |
2244 | full_path = kmalloc(unc_len + cifs_sb->prepathlen + 1, GFP_KERNEL); | |
2245 | if (full_path == NULL) | |
2246 | return ERR_PTR(-ENOMEM); | |
2247 | ||
2248 | strncpy(full_path, volume_info->UNC, unc_len); | |
2249 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) { | |
2250 | int i; | |
2251 | for (i = 0; i < unc_len; i++) { | |
2252 | if (full_path[i] == '\\') | |
2253 | full_path[i] = '/'; | |
2254 | } | |
2255 | } | |
2256 | ||
2257 | if (cifs_sb->prepathlen) | |
2258 | strncpy(full_path + unc_len, cifs_sb->prepath, | |
2259 | cifs_sb->prepathlen); | |
2260 | ||
2261 | full_path[unc_len + cifs_sb->prepathlen] = 0; /* add trailing null */ | |
2262 | return full_path; | |
2263 | } | |
2d6d589d | 2264 | #endif |
1bfe73c2 | 2265 | |
1da177e4 LT |
2266 | int |
2267 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1bfe73c2 | 2268 | char *mount_data_global, const char *devname) |
1da177e4 LT |
2269 | { |
2270 | int rc = 0; | |
2271 | int xid; | |
7586b765 | 2272 | struct smb_vol *volume_info; |
1da177e4 | 2273 | struct cifsSesInfo *pSesInfo = NULL; |
1da177e4 LT |
2274 | struct cifsTconInfo *tcon = NULL; |
2275 | struct TCP_Server_Info *srvTcp = NULL; | |
e4cce94c | 2276 | char *full_path; |
2d6d589d SF |
2277 | char *mount_data = mount_data_global; |
2278 | #ifdef CONFIG_CIFS_DFS_UPCALL | |
1bfe73c2 IM |
2279 | struct dfs_info3_param *referrals = NULL; |
2280 | unsigned int num_referrals = 0; | |
1bfe73c2 | 2281 | try_mount_again: |
2d6d589d | 2282 | #endif |
1bfe73c2 | 2283 | full_path = NULL; |
1da177e4 LT |
2284 | |
2285 | xid = GetXid(); | |
2286 | ||
7586b765 JL |
2287 | volume_info = kzalloc(sizeof(struct smb_vol), GFP_KERNEL); |
2288 | if (!volume_info) { | |
2289 | rc = -ENOMEM; | |
2290 | goto out; | |
2291 | } | |
50c2f753 | 2292 | |
7586b765 | 2293 | if (cifs_parse_mount_options(mount_data, devname, volume_info)) { |
70fe7dc0 JL |
2294 | rc = -EINVAL; |
2295 | goto out; | |
1da177e4 LT |
2296 | } |
2297 | ||
7586b765 | 2298 | if (volume_info->nullauth) { |
fb8c4b14 | 2299 | cFYI(1, ("null user")); |
7586b765 JL |
2300 | volume_info->username = ""; |
2301 | } else if (volume_info->username) { | |
1da177e4 | 2302 | /* BB fixme parse for domain name here */ |
7586b765 | 2303 | cFYI(1, ("Username: %s", volume_info->username)); |
1da177e4 | 2304 | } else { |
bf820679 | 2305 | cifserror("No username specified"); |
50c2f753 SF |
2306 | /* In userspace mount helper we can get user name from alternate |
2307 | locations such as env variables and files on disk */ | |
70fe7dc0 JL |
2308 | rc = -EINVAL; |
2309 | goto out; | |
1da177e4 LT |
2310 | } |
2311 | ||
1da177e4 LT |
2312 | |
2313 | /* this is needed for ASCII cp to Unicode converts */ | |
7586b765 | 2314 | if (volume_info->iocharset == NULL) { |
1da177e4 LT |
2315 | cifs_sb->local_nls = load_nls_default(); |
2316 | /* load_nls_default can not return null */ | |
2317 | } else { | |
7586b765 | 2318 | cifs_sb->local_nls = load_nls(volume_info->iocharset); |
fb8c4b14 | 2319 | if (cifs_sb->local_nls == NULL) { |
50c2f753 | 2320 | cERROR(1, ("CIFS mount error: iocharset %s not found", |
7586b765 | 2321 | volume_info->iocharset)); |
70fe7dc0 JL |
2322 | rc = -ELIBACC; |
2323 | goto out; | |
1da177e4 LT |
2324 | } |
2325 | } | |
2326 | ||
63c038c2 | 2327 | /* get a reference to a tcp session */ |
7586b765 | 2328 | srvTcp = cifs_get_tcp_session(volume_info); |
63c038c2 JL |
2329 | if (IS_ERR(srvTcp)) { |
2330 | rc = PTR_ERR(srvTcp); | |
2331 | goto out; | |
1da177e4 LT |
2332 | } |
2333 | ||
7586b765 | 2334 | pSesInfo = cifs_find_smb_ses(srvTcp, volume_info->username); |
14fbf50d | 2335 | if (pSesInfo) { |
1d9a8852 JL |
2336 | cFYI(1, ("Existing smb sess found (status=%d)", |
2337 | pSesInfo->status)); | |
14fbf50d JL |
2338 | /* |
2339 | * The existing SMB session already has a reference to srvTcp, | |
2340 | * so we can put back the extra one we got before | |
2341 | */ | |
2342 | cifs_put_tcp_session(srvTcp); | |
2343 | ||
88e7d705 | 2344 | down(&pSesInfo->sesSem); |
3b795210 | 2345 | if (pSesInfo->need_reconnect) { |
1d9a8852 | 2346 | cFYI(1, ("Session needs reconnect")); |
1d9a8852 JL |
2347 | rc = cifs_setup_session(xid, pSesInfo, |
2348 | cifs_sb->local_nls); | |
1d9a8852 | 2349 | } |
88e7d705 | 2350 | up(&pSesInfo->sesSem); |
1da177e4 | 2351 | } else if (!rc) { |
bf820679 | 2352 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 | 2353 | pSesInfo = sesInfoAlloc(); |
14fbf50d | 2354 | if (pSesInfo == NULL) { |
1da177e4 | 2355 | rc = -ENOMEM; |
14fbf50d | 2356 | goto mount_fail_check; |
1da177e4 LT |
2357 | } |
2358 | ||
14fbf50d JL |
2359 | /* new SMB session uses our srvTcp ref */ |
2360 | pSesInfo->server = srvTcp; | |
63c038c2 | 2361 | if (srvTcp->addr.sockAddr6.sin6_family == AF_INET6) |
0191b625 LT |
2362 | sprintf(pSesInfo->serverName, "%pI6", |
2363 | &srvTcp->addr.sockAddr6.sin6_addr); | |
8ecaf67a | 2364 | else |
0191b625 LT |
2365 | sprintf(pSesInfo->serverName, "%pI4", |
2366 | &srvTcp->addr.sockAddr.sin_addr.s_addr); | |
14fbf50d JL |
2367 | |
2368 | write_lock(&cifs_tcp_ses_lock); | |
2369 | list_add(&pSesInfo->smb_ses_list, &srvTcp->smb_ses_list); | |
2370 | write_unlock(&cifs_tcp_ses_lock); | |
2371 | ||
7586b765 JL |
2372 | /* volume_info->password freed at unmount */ |
2373 | if (volume_info->password) { | |
00e485b0 JL |
2374 | pSesInfo->password = kstrdup(volume_info->password, |
2375 | GFP_KERNEL); | |
2376 | if (!pSesInfo->password) { | |
2377 | rc = -ENOMEM; | |
2378 | goto mount_fail_check; | |
2379 | } | |
14fbf50d | 2380 | } |
7586b765 JL |
2381 | if (volume_info->username) |
2382 | strncpy(pSesInfo->userName, volume_info->username, | |
14fbf50d | 2383 | MAX_USERNAME_SIZE); |
7586b765 JL |
2384 | if (volume_info->domainname) { |
2385 | int len = strlen(volume_info->domainname); | |
14fbf50d JL |
2386 | pSesInfo->domainName = kmalloc(len + 1, GFP_KERNEL); |
2387 | if (pSesInfo->domainName) | |
2388 | strcpy(pSesInfo->domainName, | |
7586b765 | 2389 | volume_info->domainname); |
70fe7dc0 | 2390 | } |
7586b765 JL |
2391 | pSesInfo->linux_uid = volume_info->linux_uid; |
2392 | pSesInfo->overrideSecFlg = volume_info->secFlg; | |
14fbf50d | 2393 | down(&pSesInfo->sesSem); |
1da177e4 | 2394 | |
14fbf50d JL |
2395 | /* BB FIXME need to pass vol->secFlgs BB */ |
2396 | rc = cifs_setup_session(xid, pSesInfo, | |
2397 | cifs_sb->local_nls); | |
2398 | up(&pSesInfo->sesSem); | |
1da177e4 | 2399 | } |
50c2f753 | 2400 | |
1da177e4 LT |
2401 | /* search for existing tcon to this server share */ |
2402 | if (!rc) { | |
7586b765 | 2403 | setup_cifs_sb(volume_info, cifs_sb); |
1da177e4 | 2404 | |
7586b765 | 2405 | tcon = cifs_find_tcon(pSesInfo, volume_info->UNC); |
1da177e4 | 2406 | if (tcon) { |
bf820679 | 2407 | cFYI(1, ("Found match on UNC path")); |
f1987b44 JL |
2408 | /* existing tcon already has a reference */ |
2409 | cifs_put_smb_ses(pSesInfo); | |
7586b765 | 2410 | if (tcon->seal != volume_info->seal) |
95b1cb90 SF |
2411 | cERROR(1, ("transport encryption setting " |
2412 | "conflicts with existing tid")); | |
1da177e4 LT |
2413 | } else { |
2414 | tcon = tconInfoAlloc(); | |
3b795210 | 2415 | if (tcon == NULL) { |
1da177e4 | 2416 | rc = -ENOMEM; |
3b795210 SF |
2417 | goto mount_fail_check; |
2418 | } | |
00e485b0 | 2419 | |
ab3f9929 | 2420 | tcon->ses = pSesInfo; |
00e485b0 JL |
2421 | if (volume_info->password) { |
2422 | tcon->password = kstrdup(volume_info->password, | |
2423 | GFP_KERNEL); | |
2424 | if (!tcon->password) { | |
2425 | rc = -ENOMEM; | |
2426 | goto mount_fail_check; | |
2427 | } | |
2428 | } | |
3b795210 | 2429 | |
7586b765 JL |
2430 | if ((strchr(volume_info->UNC + 3, '\\') == NULL) |
2431 | && (strchr(volume_info->UNC + 3, '/') == NULL)) { | |
1bfe73c2 | 2432 | cERROR(1, ("Missing share name")); |
3b795210 SF |
2433 | rc = -ENODEV; |
2434 | goto mount_fail_check; | |
2435 | } else { | |
2436 | /* BB Do we need to wrap sesSem around | |
2437 | * this TCon call and Unix SetFS as | |
2438 | * we do on SessSetup and reconnect? */ | |
7586b765 | 2439 | rc = CIFSTCon(xid, pSesInfo, volume_info->UNC, |
3b795210 SF |
2440 | tcon, cifs_sb->local_nls); |
2441 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
7586b765 | 2442 | if (volume_info->nodfs) { |
3b795210 SF |
2443 | tcon->Flags &= ~SMB_SHARE_IS_IN_DFS; |
2444 | cFYI(1, ("DFS disabled (%d)", | |
2445 | tcon->Flags)); | |
1da177e4 LT |
2446 | } |
2447 | } | |
14fbf50d | 2448 | if (rc) |
1bfe73c2 | 2449 | goto remote_path_check; |
7586b765 | 2450 | tcon->seal = volume_info->seal; |
f1987b44 JL |
2451 | write_lock(&cifs_tcp_ses_lock); |
2452 | list_add(&tcon->tcon_list, &pSesInfo->tcon_list); | |
2453 | write_unlock(&cifs_tcp_ses_lock); | |
1da177e4 | 2454 | } |
3b795210 SF |
2455 | |
2456 | /* we can have only one retry value for a connection | |
2457 | to a share so for resources mounted more than once | |
2458 | to the same server share the last value passed in | |
2459 | for the retry flag is used */ | |
7586b765 JL |
2460 | tcon->retry = volume_info->retry; |
2461 | tcon->nocase = volume_info->nocase; | |
2462 | tcon->local_lease = volume_info->local_lease; | |
1da177e4 | 2463 | } |
4523cc30 | 2464 | if (pSesInfo) { |
1da177e4 LT |
2465 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
2466 | sb->s_maxbytes = (u64) 1 << 63; | |
2467 | } else | |
2468 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
2469 | } | |
2470 | ||
8af18971 | 2471 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
1da177e4 LT |
2472 | sb->s_time_gran = 100; |
2473 | ||
1bfe73c2 IM |
2474 | if (rc) |
2475 | goto remote_path_check; | |
2476 | ||
d82c2df5 | 2477 | cifs_sb->tcon = tcon; |
c18c842b | 2478 | |
d82c2df5 SF |
2479 | /* do not care if following two calls succeed - informational */ |
2480 | if (!tcon->ipc) { | |
2481 | CIFSSMBQFSDeviceInfo(xid, tcon); | |
2482 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
2483 | } | |
03a143c9 | 2484 | |
d82c2df5 SF |
2485 | /* tell server which Unix caps we support */ |
2486 | if (tcon->ses->capabilities & CAP_UNIX) | |
2487 | /* reset of caps checks mount to see if unix extensions | |
2488 | disabled for just this mount */ | |
7586b765 | 2489 | reset_cifs_unix_caps(xid, tcon, sb, volume_info); |
d82c2df5 SF |
2490 | else |
2491 | tcon->unix_ext = 0; /* server does not support them */ | |
c18c842b | 2492 | |
d82c2df5 SF |
2493 | /* convert forward to back slashes in prepath here if needed */ |
2494 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0) | |
2495 | convert_delimiter(cifs_sb->prepath, CIFS_DIR_SEP(cifs_sb)); | |
03a143c9 | 2496 | |
d82c2df5 SF |
2497 | if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) { |
2498 | cifs_sb->rsize = 1024 * 127; | |
2499 | cFYI(DBG2, ("no very large read support, rsize now 127K")); | |
1da177e4 | 2500 | } |
d82c2df5 SF |
2501 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
2502 | cifs_sb->wsize = min(cifs_sb->wsize, | |
2503 | (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)); | |
2504 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) | |
2505 | cifs_sb->rsize = min(cifs_sb->rsize, | |
2506 | (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)); | |
1da177e4 | 2507 | |
1bfe73c2 IM |
2508 | remote_path_check: |
2509 | /* check if a whole path (including prepath) is not remote */ | |
2510 | if (!rc && cifs_sb->prepathlen && tcon) { | |
e4cce94c IM |
2511 | /* build_path_to_root works only when we have a valid tcon */ |
2512 | full_path = cifs_build_path_to_root(cifs_sb); | |
2513 | if (full_path == NULL) { | |
2514 | rc = -ENOMEM; | |
2515 | goto mount_fail_check; | |
2516 | } | |
2517 | rc = is_path_accessible(xid, tcon, cifs_sb, full_path); | |
1bfe73c2 | 2518 | if (rc != -EREMOTE) { |
e4cce94c IM |
2519 | kfree(full_path); |
2520 | goto mount_fail_check; | |
2521 | } | |
2522 | kfree(full_path); | |
2523 | } | |
2524 | ||
1bfe73c2 IM |
2525 | /* get referral if needed */ |
2526 | if (rc == -EREMOTE) { | |
d036f50f | 2527 | #ifdef CONFIG_CIFS_DFS_UPCALL |
1bfe73c2 IM |
2528 | /* convert forward to back slashes in prepath here if needed */ |
2529 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0) | |
2530 | convert_delimiter(cifs_sb->prepath, | |
2531 | CIFS_DIR_SEP(cifs_sb)); | |
2532 | full_path = build_unc_path_to_root(volume_info, cifs_sb); | |
2533 | if (IS_ERR(full_path)) { | |
2534 | rc = PTR_ERR(full_path); | |
2535 | goto mount_fail_check; | |
2536 | } | |
2537 | ||
2538 | cFYI(1, ("Getting referral for: %s", full_path)); | |
2539 | rc = get_dfs_path(xid, pSesInfo , full_path + 1, | |
2540 | cifs_sb->local_nls, &num_referrals, &referrals, | |
2541 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); | |
2542 | if (!rc && num_referrals > 0) { | |
2543 | char *fake_devname = NULL; | |
2544 | ||
2545 | if (mount_data != mount_data_global) | |
2546 | kfree(mount_data); | |
2547 | mount_data = cifs_compose_mount_options( | |
2548 | cifs_sb->mountdata, full_path + 1, | |
2549 | referrals, &fake_devname); | |
2550 | kfree(fake_devname); | |
2551 | free_dfs_info_array(referrals, num_referrals); | |
2552 | ||
2553 | if (tcon) | |
2554 | cifs_put_tcon(tcon); | |
2555 | else if (pSesInfo) | |
2556 | cifs_put_smb_ses(pSesInfo); | |
2557 | ||
2558 | cleanup_volume_info(&volume_info); | |
2559 | FreeXid(xid); | |
2560 | kfree(full_path); | |
2561 | goto try_mount_again; | |
2562 | } | |
d036f50f SF |
2563 | #else /* No DFS support, return error on mount */ |
2564 | rc = -EOPNOTSUPP; | |
2565 | #endif | |
1bfe73c2 IM |
2566 | } |
2567 | ||
2568 | mount_fail_check: | |
2569 | /* on error free sesinfo and tcon struct if needed */ | |
2570 | if (rc) { | |
2571 | if (mount_data != mount_data_global) | |
2572 | kfree(mount_data); | |
2573 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
2574 | /* up accidently freeing someone elses tcon struct */ | |
2575 | if (tcon) | |
2576 | cifs_put_tcon(tcon); | |
2577 | else if (pSesInfo) | |
2578 | cifs_put_smb_ses(pSesInfo); | |
2579 | else | |
2580 | cifs_put_tcp_session(srvTcp); | |
2581 | goto out; | |
2582 | } | |
2583 | ||
7586b765 | 2584 | /* volume_info->password is freed above when existing session found |
1da177e4 LT |
2585 | (in which case it is not needed anymore) but when new sesion is created |
2586 | the password ptr is put in the new session structure (in which case the | |
2587 | password will be freed at unmount time) */ | |
70fe7dc0 JL |
2588 | out: |
2589 | /* zero out password before freeing */ | |
1bfe73c2 | 2590 | cleanup_volume_info(&volume_info); |
1da177e4 LT |
2591 | FreeXid(xid); |
2592 | return rc; | |
2593 | } | |
2594 | ||
1da177e4 LT |
2595 | static int |
2596 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
4b18f2a9 | 2597 | struct cifsSesInfo *ses, bool *pNTLMv2_flag, |
1da177e4 LT |
2598 | const struct nls_table *nls_codepage) |
2599 | { | |
2600 | struct smb_hdr *smb_buffer; | |
2601 | struct smb_hdr *smb_buffer_response; | |
2602 | SESSION_SETUP_ANDX *pSMB; | |
2603 | SESSION_SETUP_ANDX *pSMBr; | |
2604 | char *bcc_ptr; | |
2605 | char *domain; | |
2606 | int rc = 0; | |
2607 | int remaining_words = 0; | |
2608 | int bytes_returned = 0; | |
2609 | int len; | |
6345a3a8 | 2610 | int SecurityBlobLength = sizeof(NEGOTIATE_MESSAGE); |
1da177e4 LT |
2611 | PNEGOTIATE_MESSAGE SecurityBlob; |
2612 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2613 | __u32 negotiate_flags, capabilities; | |
2614 | __u16 count; | |
2615 | ||
12b3b8ff | 2616 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
fb8c4b14 | 2617 | if (ses == NULL) |
1da177e4 LT |
2618 | return -EINVAL; |
2619 | domain = ses->domainName; | |
4b18f2a9 | 2620 | *pNTLMv2_flag = false; |
1da177e4 LT |
2621 | smb_buffer = cifs_buf_get(); |
2622 | if (smb_buffer == NULL) { | |
2623 | return -ENOMEM; | |
2624 | } | |
2625 | smb_buffer_response = smb_buffer; | |
2626 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2627 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2628 | ||
2629 | /* send SMBsessionSetup here */ | |
2630 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2631 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2632 | |
2633 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2634 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2635 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2636 | ||
2637 | pSMB->req.AndXCommand = 0xFF; | |
2638 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2639 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2640 | ||
fb8c4b14 | 2641 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2642 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2643 | ||
2644 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2645 | CAP_EXTENDED_SECURITY; | |
2646 | if (ses->capabilities & CAP_UNICODE) { | |
2647 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2648 | capabilities |= CAP_UNICODE; | |
2649 | } | |
2650 | if (ses->capabilities & CAP_STATUS32) { | |
2651 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2652 | capabilities |= CAP_STATUS32; | |
2653 | } | |
2654 | if (ses->capabilities & CAP_DFS) { | |
2655 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2656 | capabilities |= CAP_DFS; | |
2657 | } | |
2658 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2659 | ||
2660 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2661 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2662 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2663 | SecurityBlob->MessageType = NtLmNegotiate; | |
2664 | negotiate_flags = | |
2665 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2666 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2667 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 | 2668 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
fb8c4b14 | 2669 | if (sign_CIFS_PDUs) |
1da177e4 | 2670 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 2671 | /* if (ntlmv2_support) |
3979877e | 2672 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ |
1da177e4 LT |
2673 | /* setup pointers to domain name and workstation name */ |
2674 | bcc_ptr += SecurityBlobLength; | |
2675 | ||
2676 | SecurityBlob->WorkstationName.Buffer = 0; | |
2677 | SecurityBlob->WorkstationName.Length = 0; | |
2678 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2679 | ||
12b3b8ff SF |
2680 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2681 | along with username on auth request (ie the response to challenge) */ | |
2682 | SecurityBlob->DomainName.Buffer = 0; | |
2683 | SecurityBlob->DomainName.Length = 0; | |
2684 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2685 | if (ses->capabilities & CAP_UNICODE) { |
2686 | if ((long) bcc_ptr % 2) { | |
2687 | *bcc_ptr = 0; | |
2688 | bcc_ptr++; | |
2689 | } | |
2690 | ||
2691 | bytes_returned = | |
e89dc920 | 2692 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2693 | 32, nls_codepage); |
2694 | bcc_ptr += 2 * bytes_returned; | |
2695 | bytes_returned = | |
e9ff3990 | 2696 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2697 | nls_codepage); |
2698 | bcc_ptr += 2 * bytes_returned; | |
2699 | bcc_ptr += 2; /* null terminate Linux version */ | |
2700 | bytes_returned = | |
e89dc920 | 2701 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2702 | 64, nls_codepage); |
2703 | bcc_ptr += 2 * bytes_returned; | |
2704 | *(bcc_ptr + 1) = 0; | |
2705 | *(bcc_ptr + 2) = 0; | |
2706 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2707 | *(bcc_ptr + 1) = 0; | |
2708 | *(bcc_ptr + 2) = 0; | |
2709 | bcc_ptr += 2; /* null domain */ | |
2710 | } else { /* ASCII */ | |
2711 | strcpy(bcc_ptr, "Linux version "); | |
2712 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2713 | strcpy(bcc_ptr, utsname()->release); |
2714 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2715 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2716 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2717 | bcc_ptr++; /* empty domain field */ | |
2718 | *bcc_ptr = 0; | |
2719 | } | |
2720 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2721 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2722 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2723 | smb_buffer->smb_buf_length += count; | |
2724 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2725 | ||
2726 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2727 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2728 | |
2729 | if (smb_buffer_response->Status.CifsError == | |
2730 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2731 | rc = 0; | |
2732 | ||
2733 | if (rc) { | |
2734 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2735 | } else if ((smb_buffer_response->WordCount == 3) | |
2736 | || (smb_buffer_response->WordCount == 4)) { | |
2737 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2738 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2739 | ||
2740 | if (action & GUEST_LOGIN) | |
61e74801 | 2741 | cFYI(1, ("Guest login")); |
50c2f753 | 2742 | /* Do we want to set anything in SesInfo struct when guest login? */ |
1da177e4 | 2743 | |
50c2f753 SF |
2744 | bcc_ptr = pByteArea(smb_buffer_response); |
2745 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
2746 | |
2747 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2748 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
61e74801 | 2749 | cFYI(1, ("Unexpected NTLMSSP message type received %d", |
1da177e4 LT |
2750 | SecurityBlob2->MessageType)); |
2751 | } else if (ses) { | |
50c2f753 | 2752 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ |
12b3b8ff | 2753 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2754 | if ((pSMBr->resp.hdr.WordCount == 3) |
2755 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2756 | && (blob_len < | |
2757 | pSMBr->resp.ByteCount))) { | |
2758 | ||
2759 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2760 | bcc_ptr += blob_len; | |
12b3b8ff | 2761 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2762 | blob_len)); |
2763 | } | |
2764 | ||
12b3b8ff | 2765 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2766 | |
2767 | memcpy(ses->server->cryptKey, | |
2768 | SecurityBlob2->Challenge, | |
2769 | CIFS_CRYPTO_KEY_SIZE); | |
50c2f753 | 2770 | if (SecurityBlob2->NegotiateFlags & |
12b3b8ff | 2771 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) |
4b18f2a9 | 2772 | *pNTLMv2_flag = true; |
1da177e4 | 2773 | |
50c2f753 SF |
2774 | if ((SecurityBlob2->NegotiateFlags & |
2775 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
1da177e4 | 2776 | || (sign_CIFS_PDUs > 1)) |
50c2f753 SF |
2777 | ses->server->secMode |= |
2778 | SECMODE_SIGN_REQUIRED; | |
2779 | if ((SecurityBlob2->NegotiateFlags & | |
1da177e4 | 2780 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) |
50c2f753 | 2781 | ses->server->secMode |= |
1da177e4 LT |
2782 | SECMODE_SIGN_ENABLED; |
2783 | ||
2784 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2785 | if ((long) (bcc_ptr) % 2) { | |
2786 | remaining_words = | |
2787 | (BCC(smb_buffer_response) | |
2788 | - 1) / 2; | |
50c2f753 SF |
2789 | /* Must word align unicode strings */ |
2790 | bcc_ptr++; | |
1da177e4 LT |
2791 | } else { |
2792 | remaining_words = | |
2793 | BCC | |
2794 | (smb_buffer_response) / 2; | |
2795 | } | |
2796 | len = | |
2797 | UniStrnlen((wchar_t *) bcc_ptr, | |
2798 | remaining_words - 1); | |
2799 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2800 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2801 | terminating last Unicode string in response */ | |
74496d36 | 2802 | kfree(ses->serverOS); |
1da177e4 | 2803 | ses->serverOS = |
e915fc49 | 2804 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2805 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2806 | (__le16 *) |
1da177e4 LT |
2807 | bcc_ptr, len, |
2808 | nls_codepage); | |
2809 | bcc_ptr += 2 * (len + 1); | |
2810 | remaining_words -= len + 1; | |
2811 | ses->serverOS[2 * len] = 0; | |
2812 | ses->serverOS[1 + (2 * len)] = 0; | |
2813 | if (remaining_words > 0) { | |
2814 | len = UniStrnlen((wchar_t *) | |
2815 | bcc_ptr, | |
2816 | remaining_words | |
2817 | - 1); | |
cd49b492 | 2818 | kfree(ses->serverNOS); |
1da177e4 | 2819 | ses->serverNOS = |
e915fc49 | 2820 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2821 | GFP_KERNEL); |
2822 | cifs_strfromUCS_le(ses-> | |
2823 | serverNOS, | |
e89dc920 | 2824 | (__le16 *) |
1da177e4 LT |
2825 | bcc_ptr, |
2826 | len, | |
2827 | nls_codepage); | |
2828 | bcc_ptr += 2 * (len + 1); | |
2829 | ses->serverNOS[2 * len] = 0; | |
2830 | ses->serverNOS[1 + | |
2831 | (2 * len)] = 0; | |
2832 | remaining_words -= len + 1; | |
2833 | if (remaining_words > 0) { | |
50c2f753 SF |
2834 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
2835 | /* last string not always null terminated | |
2836 | (for e.g. for Windows XP & 2000) */ | |
cd49b492 | 2837 | kfree(ses->serverDomain); |
1da177e4 | 2838 | ses->serverDomain = |
e915fc49 | 2839 | kzalloc(2 * |
1da177e4 LT |
2840 | (len + |
2841 | 1), | |
2842 | GFP_KERNEL); | |
2843 | cifs_strfromUCS_le | |
e89dc920 SF |
2844 | (ses->serverDomain, |
2845 | (__le16 *)bcc_ptr, | |
2846 | len, nls_codepage); | |
1da177e4 LT |
2847 | bcc_ptr += |
2848 | 2 * (len + 1); | |
e89dc920 | 2849 | ses->serverDomain[2*len] |
1da177e4 | 2850 | = 0; |
e89dc920 SF |
2851 | ses->serverDomain |
2852 | [1 + (2 * len)] | |
1da177e4 LT |
2853 | = 0; |
2854 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 2855 | else { |
cd49b492 | 2856 | kfree(ses->serverDomain); |
1da177e4 | 2857 | ses->serverDomain = |
e915fc49 | 2858 | kzalloc(2, |
1da177e4 | 2859 | GFP_KERNEL); |
a424f8bf | 2860 | } |
1da177e4 | 2861 | } else { /* no room so create dummy domain and NOS string */ |
cd49b492 | 2862 | kfree(ses->serverDomain); |
1da177e4 | 2863 | ses->serverDomain = |
e915fc49 | 2864 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2865 | kfree(ses->serverNOS); |
1da177e4 | 2866 | ses->serverNOS = |
e915fc49 | 2867 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2868 | } |
2869 | } else { /* ASCII */ | |
2870 | len = strnlen(bcc_ptr, 1024); | |
2871 | if (((long) bcc_ptr + len) - (long) | |
2872 | pByteArea(smb_buffer_response) | |
2873 | <= BCC(smb_buffer_response)) { | |
74496d36 | 2874 | kfree(ses->serverOS); |
1da177e4 | 2875 | ses->serverOS = |
e915fc49 | 2876 | kzalloc(len + 1, |
1da177e4 LT |
2877 | GFP_KERNEL); |
2878 | strncpy(ses->serverOS, | |
2879 | bcc_ptr, len); | |
2880 | ||
2881 | bcc_ptr += len; | |
2882 | bcc_ptr[0] = 0; /* null terminate string */ | |
2883 | bcc_ptr++; | |
2884 | ||
2885 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2886 | kfree(ses->serverNOS); |
1da177e4 | 2887 | ses->serverNOS = |
e915fc49 | 2888 | kzalloc(len + 1, |
1da177e4 LT |
2889 | GFP_KERNEL); |
2890 | strncpy(ses->serverNOS, bcc_ptr, len); | |
2891 | bcc_ptr += len; | |
2892 | bcc_ptr[0] = 0; | |
2893 | bcc_ptr++; | |
2894 | ||
2895 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2896 | kfree(ses->serverDomain); |
1da177e4 | 2897 | ses->serverDomain = |
e915fc49 | 2898 | kzalloc(len + 1, |
1da177e4 | 2899 | GFP_KERNEL); |
50c2f753 SF |
2900 | strncpy(ses->serverDomain, |
2901 | bcc_ptr, len); | |
1da177e4 LT |
2902 | bcc_ptr += len; |
2903 | bcc_ptr[0] = 0; | |
2904 | bcc_ptr++; | |
2905 | } else | |
2906 | cFYI(1, | |
63135e08 SF |
2907 | ("field of length %d " |
2908 | "extends beyond end of smb", | |
1da177e4 LT |
2909 | len)); |
2910 | } | |
2911 | } else { | |
50c2f753 SF |
2912 | cERROR(1, ("Security Blob Length extends beyond" |
2913 | " end of SMB")); | |
1da177e4 LT |
2914 | } |
2915 | } else { | |
2916 | cERROR(1, ("No session structure passed in.")); | |
2917 | } | |
2918 | } else { | |
61e74801 | 2919 | cERROR(1, ("Invalid Word count %d:", |
1da177e4 LT |
2920 | smb_buffer_response->WordCount)); |
2921 | rc = -EIO; | |
2922 | } | |
2923 | ||
a8a11d39 | 2924 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2925 | |
2926 | return rc; | |
2927 | } | |
20418acd | 2928 | |
1da177e4 LT |
2929 | static int |
2930 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
4b18f2a9 | 2931 | char *ntlm_session_key, bool ntlmv2_flag, |
6345a3a8 | 2932 | const struct nls_table *nls_codepage) |
1da177e4 LT |
2933 | { |
2934 | struct smb_hdr *smb_buffer; | |
2935 | struct smb_hdr *smb_buffer_response; | |
2936 | SESSION_SETUP_ANDX *pSMB; | |
2937 | SESSION_SETUP_ANDX *pSMBr; | |
2938 | char *bcc_ptr; | |
2939 | char *user; | |
2940 | char *domain; | |
2941 | int rc = 0; | |
2942 | int remaining_words = 0; | |
2943 | int bytes_returned = 0; | |
2944 | int len; | |
6345a3a8 | 2945 | int SecurityBlobLength = sizeof(AUTHENTICATE_MESSAGE); |
1da177e4 LT |
2946 | PAUTHENTICATE_MESSAGE SecurityBlob; |
2947 | __u32 negotiate_flags, capabilities; | |
2948 | __u16 count; | |
2949 | ||
2950 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
fb8c4b14 | 2951 | if (ses == NULL) |
1da177e4 LT |
2952 | return -EINVAL; |
2953 | user = ses->userName; | |
2954 | domain = ses->domainName; | |
2955 | smb_buffer = cifs_buf_get(); | |
2956 | if (smb_buffer == NULL) { | |
2957 | return -ENOMEM; | |
2958 | } | |
2959 | smb_buffer_response = smb_buffer; | |
6345a3a8 CG |
2960 | pSMB = (SESSION_SETUP_ANDX *)smb_buffer; |
2961 | pSMBr = (SESSION_SETUP_ANDX *)smb_buffer_response; | |
1da177e4 LT |
2962 | |
2963 | /* send SMBsessionSetup here */ | |
2964 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2965 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2966 | |
2967 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2968 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
2969 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2970 | pSMB->req.AndXCommand = 0xFF; | |
2971 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2972 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2973 | ||
2974 | pSMB->req.hdr.Uid = ses->Suid; | |
2975 | ||
fb8c4b14 | 2976 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2977 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2978 | ||
2979 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
6345a3a8 | 2980 | CAP_EXTENDED_SECURITY; |
1da177e4 LT |
2981 | if (ses->capabilities & CAP_UNICODE) { |
2982 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2983 | capabilities |= CAP_UNICODE; | |
2984 | } | |
2985 | if (ses->capabilities & CAP_STATUS32) { | |
2986 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2987 | capabilities |= CAP_STATUS32; | |
2988 | } | |
2989 | if (ses->capabilities & CAP_DFS) { | |
2990 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2991 | capabilities |= CAP_DFS; | |
2992 | } | |
2993 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2994 | ||
6345a3a8 CG |
2995 | bcc_ptr = (char *)&pSMB->req.SecurityBlob; |
2996 | SecurityBlob = (PAUTHENTICATE_MESSAGE)bcc_ptr; | |
1da177e4 LT |
2997 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); |
2998 | SecurityBlob->MessageType = NtLmAuthenticate; | |
2999 | bcc_ptr += SecurityBlobLength; | |
6345a3a8 CG |
3000 | negotiate_flags = NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | |
3001 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
3002 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
fb8c4b14 | 3003 | if (sign_CIFS_PDUs) |
1da177e4 | 3004 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 3005 | if (ntlmv2_flag) |
1da177e4 LT |
3006 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; |
3007 | ||
3008 | /* setup pointers to domain name and workstation name */ | |
3009 | ||
3010 | SecurityBlob->WorkstationName.Buffer = 0; | |
3011 | SecurityBlob->WorkstationName.Length = 0; | |
3012 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
3013 | SecurityBlob->SessionKey.Length = 0; | |
3014 | SecurityBlob->SessionKey.MaximumLength = 0; | |
3015 | SecurityBlob->SessionKey.Buffer = 0; | |
3016 | ||
3017 | SecurityBlob->LmChallengeResponse.Length = 0; | |
3018 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
3019 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
3020 | ||
3021 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 3022 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 3023 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
3024 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
3025 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
3026 | SecurityBlob->NtChallengeResponse.Buffer = |
3027 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
3028 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
3029 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
3030 | |
3031 | if (ses->capabilities & CAP_UNICODE) { | |
3032 | if (domain == NULL) { | |
3033 | SecurityBlob->DomainName.Buffer = 0; | |
3034 | SecurityBlob->DomainName.Length = 0; | |
3035 | SecurityBlob->DomainName.MaximumLength = 0; | |
3036 | } else { | |
77159b4d | 3037 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 | 3038 | nls_codepage); |
77159b4d | 3039 | ln *= 2; |
1da177e4 | 3040 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3041 | cpu_to_le16(ln); |
1da177e4 LT |
3042 | SecurityBlob->DomainName.Buffer = |
3043 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3044 | bcc_ptr += ln; |
3045 | SecurityBlobLength += ln; | |
3046 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3047 | } |
3048 | if (user == NULL) { | |
3049 | SecurityBlob->UserName.Buffer = 0; | |
3050 | SecurityBlob->UserName.Length = 0; | |
3051 | SecurityBlob->UserName.MaximumLength = 0; | |
3052 | } else { | |
77159b4d | 3053 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 | 3054 | nls_codepage); |
77159b4d | 3055 | ln *= 2; |
1da177e4 | 3056 | SecurityBlob->UserName.MaximumLength = |
77159b4d | 3057 | cpu_to_le16(ln); |
1da177e4 LT |
3058 | SecurityBlob->UserName.Buffer = |
3059 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3060 | bcc_ptr += ln; |
3061 | SecurityBlobLength += ln; | |
3062 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3063 | } |
3064 | ||
63135e08 SF |
3065 | /* SecurityBlob->WorkstationName.Length = |
3066 | cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); | |
1da177e4 | 3067 | SecurityBlob->WorkstationName.Length *= 2; |
63135e08 SF |
3068 | SecurityBlob->WorkstationName.MaximumLength = |
3069 | cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
3070 | SecurityBlob->WorkstationName.Buffer = | |
3071 | cpu_to_le32(SecurityBlobLength); | |
1da177e4 LT |
3072 | bcc_ptr += SecurityBlob->WorkstationName.Length; |
3073 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
63135e08 SF |
3074 | SecurityBlob->WorkstationName.Length = |
3075 | cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
1da177e4 LT |
3076 | |
3077 | if ((long) bcc_ptr % 2) { | |
3078 | *bcc_ptr = 0; | |
3079 | bcc_ptr++; | |
3080 | } | |
3081 | bytes_returned = | |
e89dc920 | 3082 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
3083 | 32, nls_codepage); |
3084 | bcc_ptr += 2 * bytes_returned; | |
3085 | bytes_returned = | |
e9ff3990 | 3086 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
3087 | nls_codepage); |
3088 | bcc_ptr += 2 * bytes_returned; | |
3089 | bcc_ptr += 2; /* null term version string */ | |
3090 | bytes_returned = | |
e89dc920 | 3091 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
3092 | 64, nls_codepage); |
3093 | bcc_ptr += 2 * bytes_returned; | |
3094 | *(bcc_ptr + 1) = 0; | |
3095 | *(bcc_ptr + 2) = 0; | |
3096 | bcc_ptr += 2; /* null terminate network opsys string */ | |
3097 | *(bcc_ptr + 1) = 0; | |
3098 | *(bcc_ptr + 2) = 0; | |
3099 | bcc_ptr += 2; /* null domain */ | |
3100 | } else { /* ASCII */ | |
3101 | if (domain == NULL) { | |
3102 | SecurityBlob->DomainName.Buffer = 0; | |
3103 | SecurityBlob->DomainName.Length = 0; | |
3104 | SecurityBlob->DomainName.MaximumLength = 0; | |
3105 | } else { | |
77159b4d | 3106 | __u16 ln; |
1da177e4 LT |
3107 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; |
3108 | strncpy(bcc_ptr, domain, 63); | |
77159b4d | 3109 | ln = strnlen(domain, 64); |
1da177e4 | 3110 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3111 | cpu_to_le16(ln); |
1da177e4 LT |
3112 | SecurityBlob->DomainName.Buffer = |
3113 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3114 | bcc_ptr += ln; |
3115 | SecurityBlobLength += ln; | |
3116 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3117 | } |
3118 | if (user == NULL) { | |
3119 | SecurityBlob->UserName.Buffer = 0; | |
3120 | SecurityBlob->UserName.Length = 0; | |
3121 | SecurityBlob->UserName.MaximumLength = 0; | |
3122 | } else { | |
77159b4d | 3123 | __u16 ln; |
1da177e4 | 3124 | strncpy(bcc_ptr, user, 63); |
77159b4d SF |
3125 | ln = strnlen(user, 64); |
3126 | SecurityBlob->UserName.MaximumLength = cpu_to_le16(ln); | |
1da177e4 | 3127 | SecurityBlob->UserName.Buffer = |
77159b4d SF |
3128 | cpu_to_le32(SecurityBlobLength); |
3129 | bcc_ptr += ln; | |
3130 | SecurityBlobLength += ln; | |
3131 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3132 | } |
3133 | /* BB fill in our workstation name if known BB */ | |
3134 | ||
3135 | strcpy(bcc_ptr, "Linux version "); | |
3136 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
3137 | strcpy(bcc_ptr, utsname()->release); |
3138 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
3139 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
3140 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
3141 | bcc_ptr++; /* null domain */ | |
3142 | *bcc_ptr = 0; | |
3143 | } | |
3144 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
3145 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
3146 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
3147 | smb_buffer->smb_buf_length += count; | |
3148 | pSMB->req.ByteCount = cpu_to_le16(count); | |
3149 | ||
3150 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 3151 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 | 3152 | if (rc) { |
6345a3a8 CG |
3153 | /* rc = map_smb_to_linux_error(smb_buffer_response) done in SendReceive now */ |
3154 | } else if ((smb_buffer_response->WordCount == 3) || | |
3155 | (smb_buffer_response->WordCount == 4)) { | |
1da177e4 | 3156 | __u16 action = le16_to_cpu(pSMBr->resp.Action); |
6345a3a8 | 3157 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); |
1da177e4 | 3158 | if (action & GUEST_LOGIN) |
61e74801 | 3159 | cFYI(1, ("Guest login")); /* BB Should we set anything |
50c2f753 SF |
3160 | in SesInfo struct ? */ |
3161 | /* if (SecurityBlob2->MessageType != NtLm??) { | |
3162 | cFYI("Unexpected message type on auth response is %d")); | |
3163 | } */ | |
3164 | ||
1da177e4 LT |
3165 | if (ses) { |
3166 | cFYI(1, | |
50c2f753 | 3167 | ("Check challenge UID %d vs auth response UID %d", |
1da177e4 | 3168 | ses->Suid, smb_buffer_response->Uid)); |
50c2f753 SF |
3169 | /* UID left in wire format */ |
3170 | ses->Suid = smb_buffer_response->Uid; | |
3171 | bcc_ptr = pByteArea(smb_buffer_response); | |
3172 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
3173 | if ((pSMBr->resp.hdr.WordCount == 3) |
3174 | || ((pSMBr->resp.hdr.WordCount == 4) | |
3175 | && (blob_len < | |
3176 | pSMBr->resp.ByteCount))) { | |
3177 | if (pSMBr->resp.hdr.WordCount == 4) { | |
3178 | bcc_ptr += | |
3179 | blob_len; | |
3180 | cFYI(1, | |
3181 | ("Security Blob Length %d ", | |
3182 | blob_len)); | |
3183 | } | |
3184 | ||
3185 | cFYI(1, | |
3186 | ("NTLMSSP response to Authenticate ")); | |
3187 | ||
3188 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3189 | if ((long) (bcc_ptr) % 2) { | |
3190 | remaining_words = | |
3191 | (BCC(smb_buffer_response) | |
3192 | - 1) / 2; | |
3193 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
3194 | } else { | |
3195 | remaining_words = BCC(smb_buffer_response) / 2; | |
3196 | } | |
77159b4d SF |
3197 | len = UniStrnlen((wchar_t *) bcc_ptr, |
3198 | remaining_words - 1); | |
1da177e4 LT |
3199 | /* We look for obvious messed up bcc or strings in response so we do not go off |
3200 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
3201 | terminating last Unicode string in response */ | |
74496d36 | 3202 | kfree(ses->serverOS); |
1da177e4 | 3203 | ses->serverOS = |
e915fc49 | 3204 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 3205 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 3206 | (__le16 *) |
1da177e4 LT |
3207 | bcc_ptr, len, |
3208 | nls_codepage); | |
3209 | bcc_ptr += 2 * (len + 1); | |
3210 | remaining_words -= len + 1; | |
3211 | ses->serverOS[2 * len] = 0; | |
3212 | ses->serverOS[1 + (2 * len)] = 0; | |
3213 | if (remaining_words > 0) { | |
3214 | len = UniStrnlen((wchar_t *) | |
3215 | bcc_ptr, | |
3216 | remaining_words | |
3217 | - 1); | |
cd49b492 | 3218 | kfree(ses->serverNOS); |
1da177e4 | 3219 | ses->serverNOS = |
e915fc49 | 3220 | kzalloc(2 * (len + 1), |
1da177e4 LT |
3221 | GFP_KERNEL); |
3222 | cifs_strfromUCS_le(ses-> | |
3223 | serverNOS, | |
e89dc920 | 3224 | (__le16 *) |
1da177e4 LT |
3225 | bcc_ptr, |
3226 | len, | |
3227 | nls_codepage); | |
3228 | bcc_ptr += 2 * (len + 1); | |
3229 | ses->serverNOS[2 * len] = 0; | |
3230 | ses->serverNOS[1+(2*len)] = 0; | |
3231 | remaining_words -= len + 1; | |
3232 | if (remaining_words > 0) { | |
50c2f753 | 3233 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 3234 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ |
74496d36 | 3235 | kfree(ses->serverDomain); |
1da177e4 | 3236 | ses->serverDomain = |
e915fc49 | 3237 | kzalloc(2 * |
1da177e4 LT |
3238 | (len + |
3239 | 1), | |
3240 | GFP_KERNEL); | |
3241 | cifs_strfromUCS_le | |
3242 | (ses-> | |
3243 | serverDomain, | |
e89dc920 | 3244 | (__le16 *) |
1da177e4 LT |
3245 | bcc_ptr, len, |
3246 | nls_codepage); | |
3247 | bcc_ptr += | |
3248 | 2 * (len + 1); | |
3249 | ses-> | |
3250 | serverDomain[2 | |
3251 | * len] | |
3252 | = 0; | |
3253 | ses-> | |
3254 | serverDomain[1 | |
3255 | + | |
3256 | (2 | |
3257 | * | |
3258 | len)] | |
3259 | = 0; | |
3260 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 3261 | else { |
74496d36 | 3262 | kfree(ses->serverDomain); |
e915fc49 | 3263 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 3264 | } |
1da177e4 | 3265 | } else { /* no room so create dummy domain and NOS string */ |
74496d36 | 3266 | kfree(ses->serverDomain); |
e915fc49 | 3267 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 3268 | kfree(ses->serverNOS); |
e915fc49 | 3269 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3270 | } |
3271 | } else { /* ASCII */ | |
3272 | len = strnlen(bcc_ptr, 1024); | |
50c2f753 SF |
3273 | if (((long) bcc_ptr + len) - |
3274 | (long) pByteArea(smb_buffer_response) | |
63135e08 | 3275 | <= BCC(smb_buffer_response)) { |
74496d36 | 3276 | kfree(ses->serverOS); |
77159b4d | 3277 | ses->serverOS = kzalloc(len + 1, GFP_KERNEL); |
1da177e4 LT |
3278 | strncpy(ses->serverOS,bcc_ptr, len); |
3279 | ||
3280 | bcc_ptr += len; | |
3281 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3282 | bcc_ptr++; | |
3283 | ||
3284 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3285 | kfree(ses->serverNOS); |
50c2f753 SF |
3286 | ses->serverNOS = kzalloc(len+1, |
3287 | GFP_KERNEL); | |
63135e08 SF |
3288 | strncpy(ses->serverNOS, |
3289 | bcc_ptr, len); | |
1da177e4 LT |
3290 | bcc_ptr += len; |
3291 | bcc_ptr[0] = 0; | |
3292 | bcc_ptr++; | |
3293 | ||
3294 | len = strnlen(bcc_ptr, 1024); | |
74496d36 | 3295 | kfree(ses->serverDomain); |
63135e08 SF |
3296 | ses->serverDomain = |
3297 | kzalloc(len+1, | |
3298 | GFP_KERNEL); | |
3299 | strncpy(ses->serverDomain, | |
3300 | bcc_ptr, len); | |
1da177e4 LT |
3301 | bcc_ptr += len; |
3302 | bcc_ptr[0] = 0; | |
3303 | bcc_ptr++; | |
3304 | } else | |
6345a3a8 | 3305 | cFYI(1, ("field of length %d " |
63135e08 | 3306 | "extends beyond end of smb ", |
1da177e4 LT |
3307 | len)); |
3308 | } | |
3309 | } else { | |
6345a3a8 | 3310 | cERROR(1, ("Security Blob extends beyond end " |
63135e08 | 3311 | "of SMB")); |
1da177e4 LT |
3312 | } |
3313 | } else { | |
3314 | cERROR(1, ("No session structure passed in.")); | |
3315 | } | |
3316 | } else { | |
6345a3a8 | 3317 | cERROR(1, ("Invalid Word count %d: ", |
1da177e4 LT |
3318 | smb_buffer_response->WordCount)); |
3319 | rc = -EIO; | |
3320 | } | |
3321 | ||
a8a11d39 | 3322 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3323 | |
3324 | return rc; | |
3325 | } | |
3326 | ||
3327 | int | |
3328 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3329 | const char *tree, struct cifsTconInfo *tcon, | |
3330 | const struct nls_table *nls_codepage) | |
3331 | { | |
3332 | struct smb_hdr *smb_buffer; | |
3333 | struct smb_hdr *smb_buffer_response; | |
3334 | TCONX_REQ *pSMB; | |
3335 | TCONX_RSP *pSMBr; | |
3336 | unsigned char *bcc_ptr; | |
3337 | int rc = 0; | |
cc20c031 | 3338 | int length, bytes_left; |
1da177e4 LT |
3339 | __u16 count; |
3340 | ||
3341 | if (ses == NULL) | |
3342 | return -EIO; | |
3343 | ||
3344 | smb_buffer = cifs_buf_get(); | |
3345 | if (smb_buffer == NULL) { | |
3346 | return -ENOMEM; | |
3347 | } | |
3348 | smb_buffer_response = smb_buffer; | |
3349 | ||
3350 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3351 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3352 | |
3353 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3354 | smb_buffer->Uid = ses->Suid; |
3355 | pSMB = (TCONX_REQ *) smb_buffer; | |
3356 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3357 | ||
3358 | pSMB->AndXCommand = 0xFF; | |
3359 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3360 | bcc_ptr = &pSMB->Password[0]; |
fb8c4b14 | 3361 | if ((ses->server->secMode) & SECMODE_USER) { |
eeac8047 | 3362 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
7c7b25bc | 3363 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3364 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3365 | /* already aligned so no need to do it below */ |
eeac8047 | 3366 | } else { |
7c7b25bc | 3367 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3368 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3369 | specified as required (when that support is added to | |
3370 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3371 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3372 | by Samba (not sure whether other servers allow |
3373 | NTLMv2 password here) */ | |
7c7b25bc | 3374 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
50c2f753 | 3375 | if ((extended_security & CIFSSEC_MAY_LANMAN) && |
00e485b0 JL |
3376 | (ses->server->secType == LANMAN)) |
3377 | calc_lanman_hash(tcon->password, ses->server->cryptKey, | |
4e53a3fb JL |
3378 | ses->server->secMode & |
3379 | SECMODE_PW_ENCRYPT ? true : false, | |
3380 | bcc_ptr); | |
7c7b25bc SF |
3381 | else |
3382 | #endif /* CIFS_WEAK_PW_HASH */ | |
00e485b0 | 3383 | SMBNTencrypt(tcon->password, ses->server->cryptKey, |
eeac8047 SF |
3384 | bcc_ptr); |
3385 | ||
7c7b25bc | 3386 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
fb8c4b14 | 3387 | if (ses->capabilities & CAP_UNICODE) { |
7c7b25bc SF |
3388 | /* must align unicode strings */ |
3389 | *bcc_ptr = 0; /* null byte password */ | |
3390 | bcc_ptr++; | |
3391 | } | |
eeac8047 | 3392 | } |
1da177e4 | 3393 | |
50c2f753 | 3394 | if (ses->server->secMode & |
a878fb22 | 3395 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3396 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3397 | ||
3398 | if (ses->capabilities & CAP_STATUS32) { | |
3399 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3400 | } | |
3401 | if (ses->capabilities & CAP_DFS) { | |
3402 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3403 | } | |
3404 | if (ses->capabilities & CAP_UNICODE) { | |
3405 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3406 | length = | |
50c2f753 SF |
3407 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3408 | 6 /* max utf8 char length in bytes */ * | |
a878fb22 SF |
3409 | (/* server len*/ + 256 /* share len */), nls_codepage); |
3410 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3411 | bcc_ptr += 2; /* skip trailing null */ |
3412 | } else { /* ASCII */ | |
1da177e4 LT |
3413 | strcpy(bcc_ptr, tree); |
3414 | bcc_ptr += strlen(tree) + 1; | |
3415 | } | |
3416 | strcpy(bcc_ptr, "?????"); | |
3417 | bcc_ptr += strlen("?????"); | |
3418 | bcc_ptr += 1; | |
3419 | count = bcc_ptr - &pSMB->Password[0]; | |
3420 | pSMB->hdr.smb_buf_length += count; | |
3421 | pSMB->ByteCount = cpu_to_le16(count); | |
3422 | ||
133672ef SF |
3423 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, |
3424 | CIFS_STD_OP); | |
1da177e4 | 3425 | |
1da177e4 LT |
3426 | /* above now done in SendReceive */ |
3427 | if ((rc == 0) && (tcon != NULL)) { | |
3428 | tcon->tidStatus = CifsGood; | |
3b795210 | 3429 | tcon->need_reconnect = false; |
1da177e4 LT |
3430 | tcon->tid = smb_buffer_response->Tid; |
3431 | bcc_ptr = pByteArea(smb_buffer_response); | |
cc20c031 JL |
3432 | bytes_left = BCC(smb_buffer_response); |
3433 | length = strnlen(bcc_ptr, bytes_left - 2); | |
3434 | ||
50c2f753 | 3435 | /* skip service field (NB: this field is always ASCII) */ |
7f8ed420 SF |
3436 | if (length == 3) { |
3437 | if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') && | |
3438 | (bcc_ptr[2] == 'C')) { | |
3439 | cFYI(1, ("IPC connection")); | |
3440 | tcon->ipc = 1; | |
3441 | } | |
3442 | } else if (length == 2) { | |
3443 | if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) { | |
3444 | /* the most common case */ | |
3445 | cFYI(1, ("disk share connection")); | |
3446 | } | |
3447 | } | |
50c2f753 | 3448 | bcc_ptr += length + 1; |
cc20c031 | 3449 | bytes_left -= (length + 1); |
1da177e4 | 3450 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
cc20c031 JL |
3451 | |
3452 | /* mostly informational -- no need to fail on error here */ | |
3453 | tcon->nativeFileSystem = cifs_strndup(bcc_ptr, bytes_left, | |
3454 | smb_buffer->Flags2 & | |
3455 | SMBFLG2_UNICODE, | |
3456 | nls_codepage); | |
3457 | ||
3458 | cFYI(1, ("nativeFileSystem=%s", tcon->nativeFileSystem)); | |
3459 | ||
fb8c4b14 | 3460 | if ((smb_buffer_response->WordCount == 3) || |
1a4e15a0 SF |
3461 | (smb_buffer_response->WordCount == 7)) |
3462 | /* field is in same location */ | |
3979877e SF |
3463 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
3464 | else | |
3465 | tcon->Flags = 0; | |
1da177e4 LT |
3466 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3467 | } else if ((rc == 0) && tcon == NULL) { | |
50c2f753 | 3468 | /* all we need to save for IPC$ connection */ |
1da177e4 LT |
3469 | ses->ipc_tid = smb_buffer_response->Tid; |
3470 | } | |
3471 | ||
a8a11d39 | 3472 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3473 | return rc; |
3474 | } | |
3475 | ||
3476 | int | |
3477 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3478 | { | |
3479 | int rc = 0; | |
50c2f753 | 3480 | char *tmp; |
1da177e4 | 3481 | |
f1987b44 JL |
3482 | if (cifs_sb->tcon) |
3483 | cifs_put_tcon(cifs_sb->tcon); | |
50c2f753 | 3484 | |
1da177e4 | 3485 | cifs_sb->tcon = NULL; |
2fe87f02 SF |
3486 | tmp = cifs_sb->prepath; |
3487 | cifs_sb->prepathlen = 0; | |
3488 | cifs_sb->prepath = NULL; | |
3489 | kfree(tmp); | |
1da177e4 | 3490 | |
88e7d705 | 3491 | return rc; |
50c2f753 | 3492 | } |
1da177e4 LT |
3493 | |
3494 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
50c2f753 | 3495 | struct nls_table *nls_info) |
1da177e4 LT |
3496 | { |
3497 | int rc = 0; | |
7c7b25bc | 3498 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
4b18f2a9 | 3499 | bool ntlmv2_flag = false; |
ad009ac9 | 3500 | int first_time = 0; |
cb7691b6 | 3501 | struct TCP_Server_Info *server = pSesInfo->server; |
1da177e4 LT |
3502 | |
3503 | /* what if server changes its buffer size after dropping the session? */ | |
cb7691b6 | 3504 | if (server->maxBuf == 0) /* no need to send on reconnect */ { |
1da177e4 | 3505 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
cb7691b6 JL |
3506 | if (rc == -EAGAIN) { |
3507 | /* retry only once on 1st time connection */ | |
1da177e4 | 3508 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
50c2f753 | 3509 | if (rc == -EAGAIN) |
1da177e4 LT |
3510 | rc = -EHOSTDOWN; |
3511 | } | |
fb8c4b14 | 3512 | if (rc == 0) { |
1da177e4 | 3513 | spin_lock(&GlobalMid_Lock); |
cb7691b6 JL |
3514 | if (server->tcpStatus != CifsExiting) |
3515 | server->tcpStatus = CifsGood; | |
1da177e4 LT |
3516 | else |
3517 | rc = -EHOSTDOWN; | |
3518 | spin_unlock(&GlobalMid_Lock); | |
3519 | ||
3520 | } | |
ad009ac9 | 3521 | first_time = 1; |
1da177e4 | 3522 | } |
26b994fa SF |
3523 | |
3524 | if (rc) | |
3525 | goto ss_err_exit; | |
3526 | ||
3527 | pSesInfo->flags = 0; | |
cb7691b6 | 3528 | pSesInfo->capabilities = server->capabilities; |
26b994fa SF |
3529 | if (linuxExtEnabled == 0) |
3530 | pSesInfo->capabilities &= (~CAP_UNIX); | |
20418acd | 3531 | |
26b994fa | 3532 | cFYI(1, ("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", |
cb7691b6 JL |
3533 | server->secMode, server->capabilities, server->timeAdj)); |
3534 | ||
20418acd | 3535 | rc = CIFS_SessSetup(xid, pSesInfo, first_time, nls_info); |
26b994fa SF |
3536 | if (rc) { |
3537 | cERROR(1, ("Send error in SessSetup = %d", rc)); | |
3538 | } else { | |
3539 | cFYI(1, ("CIFS Session Established successfully")); | |
20418acd SF |
3540 | spin_lock(&GlobalMid_Lock); |
3541 | pSesInfo->status = CifsGood; | |
3542 | pSesInfo->need_reconnect = false; | |
3543 | spin_unlock(&GlobalMid_Lock); | |
1da177e4 | 3544 | } |
26b994fa | 3545 | |
1da177e4 LT |
3546 | ss_err_exit: |
3547 | return rc; | |
3548 | } | |
3549 |