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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs/connect.c | |
3 | * | |
d185cda7 | 4 | * Copyright (C) International Business Machines Corp., 2002,2009 |
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> |
5c2503a8 | 35 | #include <linux/namei.h> |
1da177e4 LT |
36 | #include <asm/uaccess.h> |
37 | #include <asm/processor.h> | |
0e2bedaa | 38 | #include <net/ipv6.h> |
1da177e4 LT |
39 | #include "cifspdu.h" |
40 | #include "cifsglob.h" | |
41 | #include "cifsproto.h" | |
42 | #include "cifs_unicode.h" | |
43 | #include "cifs_debug.h" | |
44 | #include "cifs_fs_sb.h" | |
45 | #include "ntlmssp.h" | |
46 | #include "nterr.h" | |
47 | #include "rfc1002pdu.h" | |
a2653eba | 48 | #include "cn_cifs.h" |
1da177e4 LT |
49 | |
50 | #define CIFS_PORT 445 | |
51 | #define RFC1001_PORT 139 | |
52 | ||
1da177e4 LT |
53 | extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, |
54 | unsigned char *p24); | |
55 | ||
56 | extern mempool_t *cifs_req_poolp; | |
57 | ||
58 | struct smb_vol { | |
59 | char *username; | |
60 | char *password; | |
61 | char *domainname; | |
62 | char *UNC; | |
63 | char *UNCip; | |
95b1cb90 | 64 | char *in6_addr; /* ipv6 address as human readable form of in6_addr */ |
1da177e4 LT |
65 | char *iocharset; /* local code page for mapping to and from Unicode */ |
66 | char source_rfc1001_name[16]; /* netbios name of client */ | |
a10faeb2 | 67 | char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */ |
1da177e4 LT |
68 | uid_t linux_uid; |
69 | gid_t linux_gid; | |
70 | mode_t file_mode; | |
71 | mode_t dir_mode; | |
189acaae | 72 | unsigned secFlg; |
4b18f2a9 SF |
73 | bool rw:1; |
74 | bool retry:1; | |
75 | bool intr:1; | |
76 | bool setuids:1; | |
77 | bool override_uid:1; | |
78 | bool override_gid:1; | |
d0a9c078 | 79 | bool dynperm:1; |
4b18f2a9 SF |
80 | bool noperm:1; |
81 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
82 | bool cifs_acl:1; | |
83 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ | |
84 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
85 | bool direct_io:1; | |
95b1cb90 SF |
86 | bool remap:1; /* set to remap seven reserved chars in filenames */ |
87 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ | |
4b18f2a9 SF |
88 | bool no_linux_ext:1; |
89 | bool sfu_emul:1; | |
95b1cb90 SF |
90 | bool nullauth:1; /* attempt to authenticate with null user */ |
91 | bool nocase:1; /* request case insensitive filenames */ | |
92 | bool nobrl:1; /* disable sending byte range locks to srv */ | |
13a6e42a | 93 | bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ |
95b1cb90 | 94 | bool seal:1; /* request transport encryption on share */ |
84210e91 SF |
95 | bool nodfs:1; /* Do not request DFS, even if available */ |
96 | bool local_lease:1; /* check leases only on local system, not remote */ | |
edf1ae40 SF |
97 | bool noblocksnd:1; |
98 | bool noautotune:1; | |
be652445 | 99 | bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ |
1da177e4 LT |
100 | unsigned int rsize; |
101 | unsigned int wsize; | |
102 | unsigned int sockopt; | |
103 | unsigned short int port; | |
fb8c4b14 | 104 | char *prepath; |
1da177e4 LT |
105 | }; |
106 | ||
bcf4b106 | 107 | static int ipv4_connect(struct TCP_Server_Info *server); |
d5c5605c | 108 | static int ipv6_connect(struct TCP_Server_Info *server); |
1da177e4 | 109 | |
d5c5605c JL |
110 | /* |
111 | * cifs tcp session reconnection | |
112 | * | |
113 | * mark tcp session as reconnecting so temporarily locked | |
114 | * mark all smb sessions as reconnecting for tcp session | |
115 | * reconnect tcp session | |
116 | * wake up waiters on reconnection? - (not needed currently) | |
117 | */ | |
2cd646a2 | 118 | static int |
1da177e4 LT |
119 | cifs_reconnect(struct TCP_Server_Info *server) |
120 | { | |
121 | int rc = 0; | |
f1987b44 | 122 | struct list_head *tmp, *tmp2; |
1da177e4 LT |
123 | struct cifsSesInfo *ses; |
124 | struct cifsTconInfo *tcon; | |
fb8c4b14 | 125 | struct mid_q_entry *mid_entry; |
50c2f753 | 126 | |
1da177e4 | 127 | spin_lock(&GlobalMid_Lock); |
469ee614 | 128 | if (server->tcpStatus == CifsExiting) { |
fb8c4b14 | 129 | /* the demux thread will exit normally |
1da177e4 LT |
130 | next time through the loop */ |
131 | spin_unlock(&GlobalMid_Lock); | |
132 | return rc; | |
133 | } else | |
134 | server->tcpStatus = CifsNeedReconnect; | |
135 | spin_unlock(&GlobalMid_Lock); | |
136 | server->maxBuf = 0; | |
137 | ||
e4eb295d | 138 | cFYI(1, ("Reconnecting tcp session")); |
1da177e4 LT |
139 | |
140 | /* before reconnecting the tcp session, mark the smb session (uid) | |
141 | and the tid bad so they are not used until reconnected */ | |
14fbf50d JL |
142 | read_lock(&cifs_tcp_ses_lock); |
143 | list_for_each(tmp, &server->smb_ses_list) { | |
144 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); | |
145 | ses->need_reconnect = true; | |
146 | ses->ipc_tid = 0; | |
f1987b44 JL |
147 | list_for_each(tmp2, &ses->tcon_list) { |
148 | tcon = list_entry(tmp2, struct cifsTconInfo, tcon_list); | |
3b795210 | 149 | tcon->need_reconnect = true; |
1da177e4 | 150 | } |
1da177e4 | 151 | } |
f1987b44 | 152 | read_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 153 | /* do not want to be sending data on a socket we are freeing */ |
72ca545b | 154 | mutex_lock(&server->srv_mutex); |
fb8c4b14 | 155 | if (server->ssocket) { |
467a8f8d | 156 | cFYI(1, ("State: 0x%x Flags: 0x%lx", server->ssocket->state, |
1da177e4 | 157 | server->ssocket->flags)); |
91cf45f0 | 158 | kernel_sock_shutdown(server->ssocket, SHUT_WR); |
fb8c4b14 | 159 | cFYI(1, ("Post shutdown state: 0x%x Flags: 0x%lx", |
467a8f8d | 160 | server->ssocket->state, |
1da177e4 LT |
161 | server->ssocket->flags)); |
162 | sock_release(server->ssocket); | |
163 | server->ssocket = NULL; | |
164 | } | |
165 | ||
166 | spin_lock(&GlobalMid_Lock); | |
167 | list_for_each(tmp, &server->pending_mid_q) { | |
168 | mid_entry = list_entry(tmp, struct | |
169 | mid_q_entry, | |
170 | qhead); | |
ad8b15f0 | 171 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { |
09d1db5c SF |
172 | /* Mark other intransit requests as needing |
173 | retry so we do not immediately mark the | |
174 | session bad again (ie after we reconnect | |
175 | below) as they timeout too */ | |
ad8b15f0 | 176 | mid_entry->midState = MID_RETRY_NEEDED; |
1da177e4 LT |
177 | } |
178 | } | |
179 | spin_unlock(&GlobalMid_Lock); | |
72ca545b | 180 | mutex_unlock(&server->srv_mutex); |
1da177e4 | 181 | |
469ee614 JL |
182 | while ((server->tcpStatus != CifsExiting) && |
183 | (server->tcpStatus != CifsGood)) { | |
6c3d8909 | 184 | try_to_freeze(); |
bcf4b106 | 185 | if (server->addr.sockAddr6.sin6_family == AF_INET6) |
d5c5605c | 186 | rc = ipv6_connect(server); |
bcf4b106 JL |
187 | else |
188 | rc = ipv4_connect(server); | |
fb8c4b14 SF |
189 | if (rc) { |
190 | cFYI(1, ("reconnect error %d", rc)); | |
0cb766ae | 191 | msleep(3000); |
1da177e4 LT |
192 | } else { |
193 | atomic_inc(&tcpSesReconnectCount); | |
194 | spin_lock(&GlobalMid_Lock); | |
469ee614 | 195 | if (server->tcpStatus != CifsExiting) |
1da177e4 | 196 | server->tcpStatus = CifsGood; |
ad009ac9 | 197 | server->sequence_number = 0; |
fb8c4b14 | 198 | spin_unlock(&GlobalMid_Lock); |
1da177e4 LT |
199 | /* atomic_set(&server->inFlight,0);*/ |
200 | wake_up(&server->response_q); | |
201 | } | |
202 | } | |
203 | return rc; | |
204 | } | |
205 | ||
fb8c4b14 | 206 | /* |
e4eb295d SF |
207 | return codes: |
208 | 0 not a transact2, or all data present | |
209 | >0 transact2 with that much data missing | |
210 | -EINVAL = invalid transact2 | |
211 | ||
212 | */ | |
fb8c4b14 | 213 | static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) |
e4eb295d | 214 | { |
fb8c4b14 SF |
215 | struct smb_t2_rsp *pSMBt; |
216 | int total_data_size; | |
e4eb295d SF |
217 | int data_in_this_rsp; |
218 | int remaining; | |
219 | ||
fb8c4b14 | 220 | if (pSMB->Command != SMB_COM_TRANSACTION2) |
e4eb295d SF |
221 | return 0; |
222 | ||
fb8c4b14 SF |
223 | /* check for plausible wct, bcc and t2 data and parm sizes */ |
224 | /* check for parm and data offset going beyond end of smb */ | |
225 | if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
467a8f8d | 226 | cFYI(1, ("invalid transact2 word count")); |
e4eb295d SF |
227 | return -EINVAL; |
228 | } | |
229 | ||
230 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
231 | ||
232 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
233 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
234 | ||
235 | remaining = total_data_size - data_in_this_rsp; | |
236 | ||
fb8c4b14 | 237 | if (remaining == 0) |
e4eb295d | 238 | return 0; |
fb8c4b14 | 239 | else if (remaining < 0) { |
467a8f8d | 240 | cFYI(1, ("total data %d smaller than data in frame %d", |
e4eb295d SF |
241 | total_data_size, data_in_this_rsp)); |
242 | return -EINVAL; | |
243 | } else { | |
467a8f8d | 244 | cFYI(1, ("missing %d bytes from transact2, check next response", |
e4eb295d | 245 | remaining)); |
fb8c4b14 SF |
246 | if (total_data_size > maxBufSize) { |
247 | cERROR(1, ("TotalDataSize %d is over maximum buffer %d", | |
248 | total_data_size, maxBufSize)); | |
249 | return -EINVAL; | |
e4eb295d SF |
250 | } |
251 | return remaining; | |
252 | } | |
253 | } | |
254 | ||
fb8c4b14 | 255 | static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) |
e4eb295d SF |
256 | { |
257 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
258 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
259 | int total_data_size; | |
260 | int total_in_buf; | |
261 | int remaining; | |
262 | int total_in_buf2; | |
fb8c4b14 SF |
263 | char *data_area_of_target; |
264 | char *data_area_of_buf2; | |
e4eb295d SF |
265 | __u16 byte_count; |
266 | ||
267 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
268 | ||
fb8c4b14 | 269 | if (total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { |
63135e08 | 270 | cFYI(1, ("total data size of primary and secondary t2 differ")); |
e4eb295d SF |
271 | } |
272 | ||
273 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
274 | ||
275 | remaining = total_data_size - total_in_buf; | |
50c2f753 | 276 | |
fb8c4b14 | 277 | if (remaining < 0) |
e4eb295d SF |
278 | return -EINVAL; |
279 | ||
fb8c4b14 | 280 | if (remaining == 0) /* nothing to do, ignore */ |
e4eb295d | 281 | return 0; |
50c2f753 | 282 | |
e4eb295d | 283 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); |
fb8c4b14 | 284 | if (remaining < total_in_buf2) { |
467a8f8d | 285 | cFYI(1, ("transact2 2nd response contains too much data")); |
e4eb295d SF |
286 | } |
287 | ||
288 | /* find end of first SMB data area */ | |
fb8c4b14 | 289 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + |
e4eb295d SF |
290 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); |
291 | /* validate target area */ | |
292 | ||
293 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
fb8c4b14 | 294 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); |
e4eb295d SF |
295 | |
296 | data_area_of_target += total_in_buf; | |
297 | ||
298 | /* copy second buffer into end of first buffer */ | |
fb8c4b14 | 299 | memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); |
e4eb295d SF |
300 | total_in_buf += total_in_buf2; |
301 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
302 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
303 | byte_count += total_in_buf2; | |
304 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
305 | ||
70ca734a | 306 | byte_count = pTargetSMB->smb_buf_length; |
e4eb295d SF |
307 | byte_count += total_in_buf2; |
308 | ||
309 | /* BB also add check that we are not beyond maximum buffer size */ | |
50c2f753 | 310 | |
70ca734a | 311 | pTargetSMB->smb_buf_length = byte_count; |
e4eb295d | 312 | |
fb8c4b14 | 313 | if (remaining == total_in_buf2) { |
467a8f8d | 314 | cFYI(1, ("found the last secondary response")); |
e4eb295d SF |
315 | return 0; /* we are done */ |
316 | } else /* more responses to go */ | |
317 | return 1; | |
318 | ||
319 | } | |
320 | ||
1da177e4 LT |
321 | static int |
322 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
323 | { | |
324 | int length; | |
325 | unsigned int pdu_length, total_read; | |
326 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
327 | struct smb_hdr *bigbuf = NULL; |
328 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
329 | struct msghdr smb_msg; |
330 | struct kvec iov; | |
331 | struct socket *csocket = server->ssocket; | |
332 | struct list_head *tmp; | |
333 | struct cifsSesInfo *ses; | |
334 | struct task_struct *task_to_wake = NULL; | |
335 | struct mid_q_entry *mid_entry; | |
70ca734a | 336 | char temp; |
4b18f2a9 SF |
337 | bool isLargeBuf = false; |
338 | bool isMultiRsp; | |
e4eb295d | 339 | int reconnect; |
1da177e4 | 340 | |
1da177e4 | 341 | current->flags |= PF_MEMALLOC; |
ba25f9dc | 342 | cFYI(1, ("Demultiplex PID: %d", task_pid_nr(current))); |
93d0ec85 JL |
343 | |
344 | length = atomic_inc_return(&tcpSesAllocCount); | |
345 | if (length > 1) | |
26f57364 SF |
346 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, |
347 | GFP_KERNEL); | |
1da177e4 | 348 | |
83144186 | 349 | set_freezable(); |
469ee614 | 350 | while (server->tcpStatus != CifsExiting) { |
ede1327e SF |
351 | if (try_to_freeze()) |
352 | continue; | |
b8643e1b SF |
353 | if (bigbuf == NULL) { |
354 | bigbuf = cifs_buf_get(); | |
0fd1ffe0 PM |
355 | if (!bigbuf) { |
356 | cERROR(1, ("No memory for large SMB response")); | |
b8643e1b SF |
357 | msleep(3000); |
358 | /* retry will check if exiting */ | |
359 | continue; | |
360 | } | |
0fd1ffe0 PM |
361 | } else if (isLargeBuf) { |
362 | /* we are reusing a dirty large buf, clear its start */ | |
26f57364 | 363 | memset(bigbuf, 0, sizeof(struct smb_hdr)); |
1da177e4 | 364 | } |
b8643e1b SF |
365 | |
366 | if (smallbuf == NULL) { | |
367 | smallbuf = cifs_small_buf_get(); | |
0fd1ffe0 PM |
368 | if (!smallbuf) { |
369 | cERROR(1, ("No memory for SMB response")); | |
b8643e1b SF |
370 | msleep(1000); |
371 | /* retry will check if exiting */ | |
372 | continue; | |
373 | } | |
374 | /* beginning of smb buffer is cleared in our buf_get */ | |
375 | } else /* if existing small buf clear beginning */ | |
26f57364 | 376 | memset(smallbuf, 0, sizeof(struct smb_hdr)); |
b8643e1b | 377 | |
4b18f2a9 SF |
378 | isLargeBuf = false; |
379 | isMultiRsp = false; | |
b8643e1b | 380 | smb_buffer = smallbuf; |
1da177e4 LT |
381 | iov.iov_base = smb_buffer; |
382 | iov.iov_len = 4; | |
383 | smb_msg.msg_control = NULL; | |
384 | smb_msg.msg_controllen = 0; | |
f01d5e14 SF |
385 | pdu_length = 4; /* enough to get RFC1001 header */ |
386 | incomplete_rcv: | |
1da177e4 LT |
387 | length = |
388 | kernel_recvmsg(csocket, &smb_msg, | |
f01d5e14 | 389 | &iov, 1, pdu_length, 0 /* BB other flags? */); |
1da177e4 | 390 | |
469ee614 | 391 | if (server->tcpStatus == CifsExiting) { |
1da177e4 LT |
392 | break; |
393 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
0fd1ffe0 | 394 | cFYI(1, ("Reconnect after server stopped responding")); |
1da177e4 | 395 | cifs_reconnect(server); |
0fd1ffe0 | 396 | cFYI(1, ("call to reconnect done")); |
1da177e4 LT |
397 | csocket = server->ssocket; |
398 | continue; | |
399 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 400 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
401 | allowing socket to clear and app threads to set |
402 | tcpStatus CifsNeedReconnect if server hung */ | |
c527c8a7 SF |
403 | if (pdu_length < 4) { |
404 | iov.iov_base = (4 - pdu_length) + | |
405 | (char *)smb_buffer; | |
406 | iov.iov_len = pdu_length; | |
407 | smb_msg.msg_control = NULL; | |
408 | smb_msg.msg_controllen = 0; | |
c18c732e | 409 | goto incomplete_rcv; |
c527c8a7 | 410 | } else |
c18c732e | 411 | continue; |
1da177e4 | 412 | } else if (length <= 0) { |
0fd1ffe0 PM |
413 | if (server->tcpStatus == CifsNew) { |
414 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
415 | /* some servers kill the TCP session rather than |
416 | returning an SMB negprot error, in which | |
417 | case reconnecting here is not going to help, | |
418 | and so simply return error to mount */ | |
1da177e4 LT |
419 | break; |
420 | } | |
0fd1ffe0 | 421 | if (!try_to_freeze() && (length == -EINTR)) { |
467a8f8d | 422 | cFYI(1, ("cifsd thread killed")); |
1da177e4 LT |
423 | break; |
424 | } | |
467a8f8d | 425 | cFYI(1, ("Reconnect after unexpected peek error %d", |
57337e42 | 426 | length)); |
1da177e4 LT |
427 | cifs_reconnect(server); |
428 | csocket = server->ssocket; | |
429 | wake_up(&server->response_q); | |
430 | continue; | |
2a974680 PT |
431 | } else if (length < pdu_length) { |
432 | cFYI(1, ("requested %d bytes but only got %d bytes", | |
433 | pdu_length, length)); | |
f01d5e14 | 434 | pdu_length -= length; |
f01d5e14 SF |
435 | msleep(1); |
436 | goto incomplete_rcv; | |
46810cbf | 437 | } |
1da177e4 | 438 | |
70ca734a SF |
439 | /* The right amount was read from socket - 4 bytes */ |
440 | /* so we can now interpret the length field */ | |
46810cbf | 441 | |
70ca734a SF |
442 | /* the first byte big endian of the length field, |
443 | is actually not part of the length but the type | |
444 | with the most common, zero, as regular data */ | |
445 | temp = *((char *) smb_buffer); | |
46810cbf | 446 | |
fb8c4b14 | 447 | /* Note that FC 1001 length is big endian on the wire, |
70ca734a SF |
448 | but we convert it here so it is always manipulated |
449 | as host byte order */ | |
5ca33c6a | 450 | pdu_length = be32_to_cpu((__force __be32)smb_buffer->smb_buf_length); |
70ca734a SF |
451 | smb_buffer->smb_buf_length = pdu_length; |
452 | ||
467a8f8d | 453 | cFYI(1, ("rfc1002 length 0x%x", pdu_length+4)); |
46810cbf | 454 | |
70ca734a | 455 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
fb8c4b14 | 456 | continue; |
70ca734a | 457 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
467a8f8d | 458 | cFYI(1, ("Good RFC 1002 session rsp")); |
e4eb295d | 459 | continue; |
70ca734a | 460 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
fb8c4b14 | 461 | /* we get this from Windows 98 instead of |
46810cbf | 462 | an error on SMB negprot response */ |
fb8c4b14 | 463 | cFYI(1, ("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 464 | pdu_length)); |
fb8c4b14 SF |
465 | if (server->tcpStatus == CifsNew) { |
466 | /* if nack on negprot (rather than | |
46810cbf SF |
467 | ret of smb negprot error) reconnecting |
468 | not going to help, ret error to mount */ | |
469 | break; | |
470 | } else { | |
471 | /* give server a second to | |
472 | clean up before reconnect attempt */ | |
473 | msleep(1000); | |
474 | /* always try 445 first on reconnect | |
475 | since we get NACK on some if we ever | |
fb8c4b14 | 476 | connected to port 139 (the NACK is |
46810cbf SF |
477 | since we do not begin with RFC1001 |
478 | session initialize frame) */ | |
fb8c4b14 | 479 | server->addr.sockAddr.sin_port = |
46810cbf | 480 | htons(CIFS_PORT); |
1da177e4 LT |
481 | cifs_reconnect(server); |
482 | csocket = server->ssocket; | |
46810cbf | 483 | wake_up(&server->response_q); |
1da177e4 | 484 | continue; |
46810cbf | 485 | } |
70ca734a | 486 | } else if (temp != (char) 0) { |
fb8c4b14 | 487 | cERROR(1, ("Unknown RFC 1002 frame")); |
70ca734a SF |
488 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
489 | length); | |
46810cbf SF |
490 | cifs_reconnect(server); |
491 | csocket = server->ssocket; | |
492 | continue; | |
e4eb295d SF |
493 | } |
494 | ||
495 | /* else we have an SMB response */ | |
fb8c4b14 | 496 | if ((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || |
26f57364 | 497 | (pdu_length < sizeof(struct smb_hdr) - 1 - 4)) { |
e4eb295d | 498 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 499 | length, pdu_length+4)); |
e4eb295d SF |
500 | cifs_reconnect(server); |
501 | csocket = server->ssocket; | |
502 | wake_up(&server->response_q); | |
503 | continue; | |
fb8c4b14 | 504 | } |
e4eb295d SF |
505 | |
506 | /* else length ok */ | |
507 | reconnect = 0; | |
508 | ||
fb8c4b14 | 509 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
4b18f2a9 | 510 | isLargeBuf = true; |
e4eb295d SF |
511 | memcpy(bigbuf, smallbuf, 4); |
512 | smb_buffer = bigbuf; | |
513 | } | |
514 | length = 0; | |
515 | iov.iov_base = 4 + (char *)smb_buffer; | |
516 | iov.iov_len = pdu_length; | |
fb8c4b14 | 517 | for (total_read = 0; total_read < pdu_length; |
e4eb295d SF |
518 | total_read += length) { |
519 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
520 | pdu_length - total_read, 0); | |
469ee614 | 521 | if ((server->tcpStatus == CifsExiting) || |
e4eb295d SF |
522 | (length == -EINTR)) { |
523 | /* then will exit */ | |
524 | reconnect = 2; | |
525 | break; | |
526 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
527 | cifs_reconnect(server); |
528 | csocket = server->ssocket; | |
fb8c4b14 | 529 | /* Reconnect wakes up rspns q */ |
e4eb295d SF |
530 | /* Now we will reread sock */ |
531 | reconnect = 1; | |
532 | break; | |
fb8c4b14 | 533 | } else if ((length == -ERESTARTSYS) || |
e4eb295d SF |
534 | (length == -EAGAIN)) { |
535 | msleep(1); /* minimum sleep to prevent looping, | |
fb8c4b14 | 536 | allowing socket to clear and app |
e4eb295d SF |
537 | threads to set tcpStatus |
538 | CifsNeedReconnect if server hung*/ | |
c18c732e | 539 | length = 0; |
46810cbf | 540 | continue; |
e4eb295d | 541 | } else if (length <= 0) { |
fb8c4b14 | 542 | cERROR(1, ("Received no data, expecting %d", |
e4eb295d SF |
543 | pdu_length - total_read)); |
544 | cifs_reconnect(server); | |
545 | csocket = server->ssocket; | |
546 | reconnect = 1; | |
547 | break; | |
46810cbf | 548 | } |
e4eb295d | 549 | } |
fb8c4b14 | 550 | if (reconnect == 2) |
e4eb295d | 551 | break; |
fb8c4b14 | 552 | else if (reconnect == 1) |
e4eb295d | 553 | continue; |
1da177e4 | 554 | |
e4eb295d | 555 | length += 4; /* account for rfc1002 hdr */ |
50c2f753 | 556 | |
09d1db5c | 557 | |
e4eb295d | 558 | dump_smb(smb_buffer, length); |
184ed211 | 559 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 560 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
561 | continue; |
562 | } | |
1da177e4 | 563 | |
e4eb295d SF |
564 | |
565 | task_to_wake = NULL; | |
566 | spin_lock(&GlobalMid_Lock); | |
567 | list_for_each(tmp, &server->pending_mid_q) { | |
568 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
569 | ||
50c2f753 | 570 | if ((mid_entry->mid == smb_buffer->Mid) && |
e4eb295d SF |
571 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && |
572 | (mid_entry->command == smb_buffer->Command)) { | |
fb8c4b14 | 573 | if (check2ndT2(smb_buffer,server->maxBuf) > 0) { |
e4eb295d | 574 | /* We have a multipart transact2 resp */ |
4b18f2a9 | 575 | isMultiRsp = true; |
fb8c4b14 | 576 | if (mid_entry->resp_buf) { |
e4eb295d | 577 | /* merge response - fix up 1st*/ |
50c2f753 | 578 | if (coalesce_t2(smb_buffer, |
e4eb295d | 579 | mid_entry->resp_buf)) { |
4b18f2a9 SF |
580 | mid_entry->multiRsp = |
581 | true; | |
e4eb295d SF |
582 | break; |
583 | } else { | |
584 | /* all parts received */ | |
4b18f2a9 SF |
585 | mid_entry->multiEnd = |
586 | true; | |
50c2f753 | 587 | goto multi_t2_fnd; |
e4eb295d SF |
588 | } |
589 | } else { | |
fb8c4b14 | 590 | if (!isLargeBuf) { |
e4eb295d SF |
591 | cERROR(1,("1st trans2 resp needs bigbuf")); |
592 | /* BB maybe we can fix this up, switch | |
50c2f753 | 593 | to already allocated large buffer? */ |
e4eb295d | 594 | } else { |
cd63499c | 595 | /* Have first buffer */ |
e4eb295d SF |
596 | mid_entry->resp_buf = |
597 | smb_buffer; | |
4b18f2a9 SF |
598 | mid_entry->largeBuf = |
599 | true; | |
e4eb295d SF |
600 | bigbuf = NULL; |
601 | } | |
602 | } | |
603 | break; | |
50c2f753 | 604 | } |
e4eb295d | 605 | mid_entry->resp_buf = smb_buffer; |
4b18f2a9 | 606 | mid_entry->largeBuf = isLargeBuf; |
e4eb295d SF |
607 | multi_t2_fnd: |
608 | task_to_wake = mid_entry->tsk; | |
609 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
610 | #ifdef CONFIG_CIFS_STATS2 |
611 | mid_entry->when_received = jiffies; | |
612 | #endif | |
3a5ff61c SF |
613 | /* so we do not time out requests to server |
614 | which is still responding (since server could | |
615 | be busy but not dead) */ | |
616 | server->lstrp = jiffies; | |
e4eb295d | 617 | break; |
46810cbf | 618 | } |
1da177e4 | 619 | } |
e4eb295d SF |
620 | spin_unlock(&GlobalMid_Lock); |
621 | if (task_to_wake) { | |
cd63499c | 622 | /* Was previous buf put in mpx struct for multi-rsp? */ |
fb8c4b14 | 623 | if (!isMultiRsp) { |
cd63499c | 624 | /* smb buffer will be freed by user thread */ |
26f57364 | 625 | if (isLargeBuf) |
cd63499c | 626 | bigbuf = NULL; |
26f57364 | 627 | else |
cd63499c SF |
628 | smallbuf = NULL; |
629 | } | |
e4eb295d | 630 | wake_up_process(task_to_wake); |
4b18f2a9 SF |
631 | } else if (!is_valid_oplock_break(smb_buffer, server) && |
632 | !isMultiRsp) { | |
50c2f753 SF |
633 | cERROR(1, ("No task to wake, unknown frame received! " |
634 | "NumMids %d", midCount.counter)); | |
635 | cifs_dump_mem("Received Data is: ", (char *)smb_buffer, | |
70ca734a | 636 | sizeof(struct smb_hdr)); |
3979877e SF |
637 | #ifdef CONFIG_CIFS_DEBUG2 |
638 | cifs_dump_detail(smb_buffer); | |
639 | cifs_dump_mids(server); | |
640 | #endif /* CIFS_DEBUG2 */ | |
50c2f753 | 641 | |
e4eb295d SF |
642 | } |
643 | } /* end while !EXITING */ | |
644 | ||
e7ddee90 JL |
645 | /* take it off the list, if it's not already */ |
646 | write_lock(&cifs_tcp_ses_lock); | |
647 | list_del_init(&server->tcp_ses_list); | |
648 | write_unlock(&cifs_tcp_ses_lock); | |
649 | ||
1da177e4 LT |
650 | spin_lock(&GlobalMid_Lock); |
651 | server->tcpStatus = CifsExiting; | |
e691b9d1 | 652 | spin_unlock(&GlobalMid_Lock); |
dbdbb876 | 653 | wake_up_all(&server->response_q); |
e691b9d1 | 654 | |
31ca3bc3 SF |
655 | /* check if we have blocked requests that need to free */ |
656 | /* Note that cifs_max_pending is normally 50, but | |
657 | can be set at module install time to as little as two */ | |
e691b9d1 | 658 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 | 659 | if (atomic_read(&server->inFlight) >= cifs_max_pending) |
31ca3bc3 SF |
660 | atomic_set(&server->inFlight, cifs_max_pending - 1); |
661 | /* We do not want to set the max_pending too low or we | |
662 | could end up with the counter going negative */ | |
1da177e4 | 663 | spin_unlock(&GlobalMid_Lock); |
50c2f753 | 664 | /* Although there should not be any requests blocked on |
1da177e4 | 665 | this queue it can not hurt to be paranoid and try to wake up requests |
09d1db5c | 666 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
667 | to the same server - they now will see the session is in exit state |
668 | and get out of SendReceive. */ | |
669 | wake_up_all(&server->request_q); | |
670 | /* give those requests time to exit */ | |
b8643e1b | 671 | msleep(125); |
50c2f753 | 672 | |
fb8c4b14 | 673 | if (server->ssocket) { |
1da177e4 LT |
674 | sock_release(csocket); |
675 | server->ssocket = NULL; | |
676 | } | |
b8643e1b | 677 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
a8a11d39 MK |
678 | cifs_buf_release(bigbuf); |
679 | if (smallbuf) /* no sense logging a debug message if NULL */ | |
b8643e1b | 680 | cifs_small_buf_release(smallbuf); |
1da177e4 | 681 | |
14fbf50d JL |
682 | /* |
683 | * BB: we shouldn't have to do any of this. It shouldn't be | |
684 | * possible to exit from the thread with active SMB sessions | |
685 | */ | |
686 | read_lock(&cifs_tcp_ses_lock); | |
1da177e4 | 687 | if (list_empty(&server->pending_mid_q)) { |
09d1db5c SF |
688 | /* loop through server session structures attached to this and |
689 | mark them dead */ | |
14fbf50d JL |
690 | list_for_each(tmp, &server->smb_ses_list) { |
691 | ses = list_entry(tmp, struct cifsSesInfo, | |
692 | smb_ses_list); | |
693 | ses->status = CifsExiting; | |
694 | ses->server = NULL; | |
1da177e4 | 695 | } |
14fbf50d | 696 | read_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 697 | } else { |
31ca3bc3 SF |
698 | /* although we can not zero the server struct pointer yet, |
699 | since there are active requests which may depnd on them, | |
700 | mark the corresponding SMB sessions as exiting too */ | |
14fbf50d | 701 | list_for_each(tmp, &server->smb_ses_list) { |
31ca3bc3 | 702 | ses = list_entry(tmp, struct cifsSesInfo, |
14fbf50d JL |
703 | smb_ses_list); |
704 | ses->status = CifsExiting; | |
31ca3bc3 SF |
705 | } |
706 | ||
1da177e4 LT |
707 | spin_lock(&GlobalMid_Lock); |
708 | list_for_each(tmp, &server->pending_mid_q) { | |
709 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
710 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
50c2f753 SF |
711 | cFYI(1, ("Clearing Mid 0x%x - waking up ", |
712 | mid_entry->mid)); | |
1da177e4 | 713 | task_to_wake = mid_entry->tsk; |
26f57364 | 714 | if (task_to_wake) |
1da177e4 | 715 | wake_up_process(task_to_wake); |
1da177e4 LT |
716 | } |
717 | } | |
718 | spin_unlock(&GlobalMid_Lock); | |
14fbf50d | 719 | read_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 720 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 721 | msleep(125); |
1da177e4 LT |
722 | } |
723 | ||
f191401f | 724 | if (!list_empty(&server->pending_mid_q)) { |
50c2f753 | 725 | /* mpx threads have not exited yet give them |
1da177e4 | 726 | at least the smb send timeout time for long ops */ |
31ca3bc3 SF |
727 | /* due to delays on oplock break requests, we need |
728 | to wait at least 45 seconds before giving up | |
729 | on a request getting a response and going ahead | |
730 | and killing cifsd */ | |
1da177e4 | 731 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 732 | msleep(46000); |
1da177e4 LT |
733 | /* if threads still have not exited they are probably never |
734 | coming home not much else we can do but free the memory */ | |
735 | } | |
1da177e4 | 736 | |
31ca3bc3 SF |
737 | /* last chance to mark ses pointers invalid |
738 | if there are any pointing to this (e.g | |
50c2f753 | 739 | if a crazy root user tried to kill cifsd |
31ca3bc3 | 740 | kernel thread explicitly this might happen) */ |
14fbf50d JL |
741 | /* BB: This shouldn't be necessary, see above */ |
742 | read_lock(&cifs_tcp_ses_lock); | |
743 | list_for_each(tmp, &server->smb_ses_list) { | |
744 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); | |
745 | ses->server = NULL; | |
31ca3bc3 | 746 | } |
14fbf50d | 747 | read_unlock(&cifs_tcp_ses_lock); |
31ca3bc3 | 748 | |
c359cf3c | 749 | kfree(server->hostname); |
b1c8d2b4 | 750 | task_to_wake = xchg(&server->tsk, NULL); |
31ca3bc3 | 751 | kfree(server); |
93d0ec85 JL |
752 | |
753 | length = atomic_dec_return(&tcpSesAllocCount); | |
26f57364 SF |
754 | if (length > 0) |
755 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, | |
756 | GFP_KERNEL); | |
50c2f753 | 757 | |
b1c8d2b4 JL |
758 | /* if server->tsk was NULL then wait for a signal before exiting */ |
759 | if (!task_to_wake) { | |
760 | set_current_state(TASK_INTERRUPTIBLE); | |
761 | while (!signal_pending(current)) { | |
762 | schedule(); | |
763 | set_current_state(TASK_INTERRUPTIBLE); | |
764 | } | |
765 | set_current_state(TASK_RUNNING); | |
766 | } | |
767 | ||
0468a2cf | 768 | module_put_and_exit(0); |
1da177e4 LT |
769 | } |
770 | ||
c359cf3c JL |
771 | /* extract the host portion of the UNC string */ |
772 | static char * | |
773 | extract_hostname(const char *unc) | |
774 | { | |
775 | const char *src; | |
776 | char *dst, *delim; | |
777 | unsigned int len; | |
778 | ||
779 | /* skip double chars at beginning of string */ | |
780 | /* BB: check validity of these bytes? */ | |
781 | src = unc + 2; | |
782 | ||
783 | /* delimiter between hostname and sharename is always '\\' now */ | |
784 | delim = strchr(src, '\\'); | |
785 | if (!delim) | |
786 | return ERR_PTR(-EINVAL); | |
787 | ||
788 | len = delim - src; | |
789 | dst = kmalloc((len + 1), GFP_KERNEL); | |
790 | if (dst == NULL) | |
791 | return ERR_PTR(-ENOMEM); | |
792 | ||
793 | memcpy(dst, src, len); | |
794 | dst[len] = '\0'; | |
795 | ||
796 | return dst; | |
797 | } | |
798 | ||
1da177e4 | 799 | static int |
50c2f753 SF |
800 | cifs_parse_mount_options(char *options, const char *devname, |
801 | struct smb_vol *vol) | |
1da177e4 LT |
802 | { |
803 | char *value; | |
804 | char *data; | |
805 | unsigned int temp_len, i, j; | |
806 | char separator[2]; | |
807 | ||
808 | separator[0] = ','; | |
50c2f753 | 809 | separator[1] = 0; |
1da177e4 | 810 | |
12e36b2f | 811 | if (Local_System_Name[0] != 0) |
50c2f753 | 812 | memcpy(vol->source_rfc1001_name, Local_System_Name, 15); |
2cd646a2 | 813 | else { |
12e36b2f | 814 | char *nodename = utsname()->nodename; |
50c2f753 SF |
815 | int n = strnlen(nodename, 15); |
816 | memset(vol->source_rfc1001_name, 0x20, 15); | |
817 | for (i = 0; i < n; i++) { | |
2cd646a2 SF |
818 | /* does not have to be perfect mapping since field is |
819 | informational, only used for servers that do not support | |
820 | port 445 and it can be overridden at mount time */ | |
12e36b2f | 821 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
2cd646a2 | 822 | } |
1da177e4 LT |
823 | } |
824 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
825 | /* null target name indicates to use *SMBSERVR default called name |
826 | if we end up sending RFC1001 session initialize */ | |
827 | vol->target_rfc1001_name[0] = 0; | |
a001e5b5 DH |
828 | vol->linux_uid = current_uid(); /* use current_euid() instead? */ |
829 | vol->linux_gid = current_gid(); | |
1da177e4 LT |
830 | vol->dir_mode = S_IRWXUGO; |
831 | /* 2767 perms indicate mandatory locking support */ | |
7505e052 | 832 | vol->file_mode = (S_IRWXUGO | S_ISGID) & (~S_IXGRP); |
1da177e4 LT |
833 | |
834 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
4b18f2a9 | 835 | vol->rw = true; |
ac67055e JA |
836 | /* default is always to request posix paths. */ |
837 | vol->posix_paths = 1; | |
838 | ||
1da177e4 LT |
839 | if (!options) |
840 | return 1; | |
841 | ||
50c2f753 | 842 | if (strncmp(options, "sep=", 4) == 0) { |
fb8c4b14 | 843 | if (options[4] != 0) { |
1da177e4 LT |
844 | separator[0] = options[4]; |
845 | options += 5; | |
846 | } else { | |
467a8f8d | 847 | cFYI(1, ("Null separator not allowed")); |
1da177e4 LT |
848 | } |
849 | } | |
50c2f753 | 850 | |
1da177e4 LT |
851 | while ((data = strsep(&options, separator)) != NULL) { |
852 | if (!*data) | |
853 | continue; | |
854 | if ((value = strchr(data, '=')) != NULL) | |
855 | *value++ = '\0'; | |
856 | ||
50c2f753 SF |
857 | /* Have to parse this before we parse for "user" */ |
858 | if (strnicmp(data, "user_xattr", 10) == 0) { | |
1da177e4 | 859 | vol->no_xattr = 0; |
50c2f753 | 860 | } else if (strnicmp(data, "nouser_xattr", 12) == 0) { |
1da177e4 LT |
861 | vol->no_xattr = 1; |
862 | } else if (strnicmp(data, "user", 4) == 0) { | |
4b952a9b | 863 | if (!value) { |
1da177e4 LT |
864 | printk(KERN_WARNING |
865 | "CIFS: invalid or missing username\n"); | |
866 | return 1; /* needs_arg; */ | |
fb8c4b14 | 867 | } else if (!*value) { |
4b952a9b SF |
868 | /* null user, ie anonymous, authentication */ |
869 | vol->nullauth = 1; | |
1da177e4 LT |
870 | } |
871 | if (strnlen(value, 200) < 200) { | |
872 | vol->username = value; | |
873 | } else { | |
874 | printk(KERN_WARNING "CIFS: username too long\n"); | |
875 | return 1; | |
876 | } | |
877 | } else if (strnicmp(data, "pass", 4) == 0) { | |
878 | if (!value) { | |
879 | vol->password = NULL; | |
880 | continue; | |
fb8c4b14 | 881 | } else if (value[0] == 0) { |
1da177e4 LT |
882 | /* check if string begins with double comma |
883 | since that would mean the password really | |
884 | does start with a comma, and would not | |
885 | indicate an empty string */ | |
fb8c4b14 | 886 | if (value[1] != separator[0]) { |
1da177e4 LT |
887 | vol->password = NULL; |
888 | continue; | |
889 | } | |
890 | } | |
891 | temp_len = strlen(value); | |
892 | /* removed password length check, NTLM passwords | |
893 | can be arbitrarily long */ | |
894 | ||
50c2f753 | 895 | /* if comma in password, the string will be |
1da177e4 LT |
896 | prematurely null terminated. Commas in password are |
897 | specified across the cifs mount interface by a double | |
898 | comma ie ,, and a comma used as in other cases ie ',' | |
899 | as a parameter delimiter/separator is single and due | |
900 | to the strsep above is temporarily zeroed. */ | |
901 | ||
902 | /* NB: password legally can have multiple commas and | |
903 | the only illegal character in a password is null */ | |
904 | ||
50c2f753 | 905 | if ((value[temp_len] == 0) && |
09d1db5c | 906 | (value[temp_len+1] == separator[0])) { |
1da177e4 LT |
907 | /* reinsert comma */ |
908 | value[temp_len] = separator[0]; | |
50c2f753 SF |
909 | temp_len += 2; /* move after second comma */ |
910 | while (value[temp_len] != 0) { | |
1da177e4 | 911 | if (value[temp_len] == separator[0]) { |
50c2f753 | 912 | if (value[temp_len+1] == |
09d1db5c SF |
913 | separator[0]) { |
914 | /* skip second comma */ | |
915 | temp_len++; | |
50c2f753 | 916 | } else { |
1da177e4 LT |
917 | /* single comma indicating start |
918 | of next parm */ | |
919 | break; | |
920 | } | |
921 | } | |
922 | temp_len++; | |
923 | } | |
fb8c4b14 | 924 | if (value[temp_len] == 0) { |
1da177e4 LT |
925 | options = NULL; |
926 | } else { | |
927 | value[temp_len] = 0; | |
928 | /* point option to start of next parm */ | |
929 | options = value + temp_len + 1; | |
930 | } | |
50c2f753 | 931 | /* go from value to value + temp_len condensing |
1da177e4 LT |
932 | double commas to singles. Note that this ends up |
933 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 934 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
fb8c4b14 | 935 | if (vol->password == NULL) { |
50c2f753 SF |
936 | printk(KERN_WARNING "CIFS: no memory " |
937 | "for password\n"); | |
433dc24f SF |
938 | return 1; |
939 | } | |
50c2f753 | 940 | for (i = 0, j = 0; i < temp_len; i++, j++) { |
1da177e4 | 941 | vol->password[j] = value[i]; |
fb8c4b14 | 942 | if (value[i] == separator[0] |
09d1db5c | 943 | && value[i+1] == separator[0]) { |
1da177e4 LT |
944 | /* skip second comma */ |
945 | i++; | |
946 | } | |
947 | } | |
948 | vol->password[j] = 0; | |
949 | } else { | |
e915fc49 | 950 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
fb8c4b14 | 951 | if (vol->password == NULL) { |
50c2f753 SF |
952 | printk(KERN_WARNING "CIFS: no memory " |
953 | "for password\n"); | |
433dc24f SF |
954 | return 1; |
955 | } | |
1da177e4 LT |
956 | strcpy(vol->password, value); |
957 | } | |
958 | } else if (strnicmp(data, "ip", 2) == 0) { | |
959 | if (!value || !*value) { | |
960 | vol->UNCip = NULL; | |
961 | } else if (strnlen(value, 35) < 35) { | |
962 | vol->UNCip = value; | |
963 | } else { | |
50c2f753 SF |
964 | printk(KERN_WARNING "CIFS: ip address " |
965 | "too long\n"); | |
1da177e4 LT |
966 | return 1; |
967 | } | |
50c2f753 SF |
968 | } else if (strnicmp(data, "sec", 3) == 0) { |
969 | if (!value || !*value) { | |
970 | cERROR(1, ("no security value specified")); | |
971 | continue; | |
972 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
973 | vol->secFlg |= CIFSSEC_MAY_KRB5 | | |
189acaae | 974 | CIFSSEC_MUST_SIGN; |
bf820679 | 975 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
50c2f753 SF |
976 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
977 | CIFSSEC_MAY_KRB5; */ | |
978 | cERROR(1, ("Krb5 cifs privacy not supported")); | |
bf820679 SF |
979 | return 1; |
980 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 981 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
ac683924 SF |
982 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
983 | } else if (strnicmp(value, "ntlmsspi", 8) == 0) { | |
984 | vol->secFlg |= CIFSSEC_MAY_NTLMSSP | | |
985 | CIFSSEC_MUST_SIGN; | |
986 | } else if (strnicmp(value, "ntlmssp", 7) == 0) { | |
987 | vol->secFlg |= CIFSSEC_MAY_NTLMSSP; | |
988 | #endif | |
bf820679 | 989 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 990 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 991 | CIFSSEC_MUST_SIGN; |
bf820679 | 992 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 993 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 994 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 995 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 996 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
997 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
998 | /* ntlm is default so can be turned off too */ | |
750d1151 | 999 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 1000 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 1001 | /* BB is there a better way to do this? */ |
750d1151 | 1002 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
1003 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
1004 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
50c2f753 | 1005 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 1006 | #endif |
bf820679 | 1007 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 1008 | vol->nullauth = 1; |
50c2f753 SF |
1009 | } else { |
1010 | cERROR(1, ("bad security option: %s", value)); | |
1011 | return 1; | |
1012 | } | |
1da177e4 LT |
1013 | } else if ((strnicmp(data, "unc", 3) == 0) |
1014 | || (strnicmp(data, "target", 6) == 0) | |
1015 | || (strnicmp(data, "path", 4) == 0)) { | |
1016 | if (!value || !*value) { | |
50c2f753 SF |
1017 | printk(KERN_WARNING "CIFS: invalid path to " |
1018 | "network resource\n"); | |
1da177e4 LT |
1019 | return 1; /* needs_arg; */ |
1020 | } | |
1021 | if ((temp_len = strnlen(value, 300)) < 300) { | |
50c2f753 | 1022 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1023 | if (vol->UNC == NULL) |
1da177e4 | 1024 | return 1; |
50c2f753 | 1025 | strcpy(vol->UNC, value); |
1da177e4 LT |
1026 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1027 | vol->UNC[0] = '\\'; | |
1028 | vol->UNC[1] = '\\'; | |
50c2f753 | 1029 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
1da177e4 | 1030 | printk(KERN_WARNING |
50c2f753 SF |
1031 | "CIFS: UNC Path does not begin " |
1032 | "with // or \\\\ \n"); | |
1da177e4 LT |
1033 | return 1; |
1034 | } | |
1035 | } else { | |
1036 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1037 | return 1; | |
1038 | } | |
1039 | } else if ((strnicmp(data, "domain", 3) == 0) | |
1040 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
1041 | if (!value || !*value) { | |
1042 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
1043 | return 1; /* needs_arg; */ | |
1044 | } | |
1045 | /* BB are there cases in which a comma can be valid in | |
1046 | a domain name and need special handling? */ | |
3979877e | 1047 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
1048 | vol->domainname = value; |
1049 | cFYI(1, ("Domain name set")); | |
1050 | } else { | |
50c2f753 SF |
1051 | printk(KERN_WARNING "CIFS: domain name too " |
1052 | "long\n"); | |
1da177e4 LT |
1053 | return 1; |
1054 | } | |
50c2f753 SF |
1055 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
1056 | if (!value || !*value) { | |
1057 | printk(KERN_WARNING | |
1058 | "CIFS: invalid path prefix\n"); | |
1059 | return 1; /* needs_argument */ | |
1060 | } | |
1061 | if ((temp_len = strnlen(value, 1024)) < 1024) { | |
4523cc30 | 1062 | if (value[0] != '/') |
2fe87f02 | 1063 | temp_len++; /* missing leading slash */ |
50c2f753 SF |
1064 | vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); |
1065 | if (vol->prepath == NULL) | |
1066 | return 1; | |
4523cc30 | 1067 | if (value[0] != '/') { |
2fe87f02 | 1068 | vol->prepath[0] = '/'; |
50c2f753 | 1069 | strcpy(vol->prepath+1, value); |
2fe87f02 | 1070 | } else |
50c2f753 SF |
1071 | strcpy(vol->prepath, value); |
1072 | cFYI(1, ("prefix path %s", vol->prepath)); | |
1073 | } else { | |
1074 | printk(KERN_WARNING "CIFS: prefix too long\n"); | |
1075 | return 1; | |
1076 | } | |
1da177e4 LT |
1077 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
1078 | if (!value || !*value) { | |
63135e08 SF |
1079 | printk(KERN_WARNING "CIFS: invalid iocharset " |
1080 | "specified\n"); | |
1da177e4 LT |
1081 | return 1; /* needs_arg; */ |
1082 | } | |
1083 | if (strnlen(value, 65) < 65) { | |
50c2f753 | 1084 | if (strnicmp(value, "default", 7)) |
1da177e4 | 1085 | vol->iocharset = value; |
50c2f753 SF |
1086 | /* if iocharset not set then load_nls_default |
1087 | is used by caller */ | |
1088 | cFYI(1, ("iocharset set to %s", value)); | |
1da177e4 | 1089 | } else { |
63135e08 SF |
1090 | printk(KERN_WARNING "CIFS: iocharset name " |
1091 | "too long.\n"); | |
1da177e4 LT |
1092 | return 1; |
1093 | } | |
1094 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1095 | if (value && *value) { | |
1096 | vol->linux_uid = | |
1097 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1098 | vol->override_uid = 1; |
1da177e4 LT |
1099 | } |
1100 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1101 | if (value && *value) { | |
1102 | vol->linux_gid = | |
1103 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1104 | vol->override_gid = 1; |
1da177e4 LT |
1105 | } |
1106 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1107 | if (value && *value) { | |
1108 | vol->file_mode = | |
1109 | simple_strtoul(value, &value, 0); | |
1110 | } | |
1111 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1112 | if (value && *value) { | |
1113 | vol->dir_mode = | |
1114 | simple_strtoul(value, &value, 0); | |
1115 | } | |
1116 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1117 | if (value && *value) { | |
1118 | vol->dir_mode = | |
1119 | simple_strtoul(value, &value, 0); | |
1120 | } | |
1121 | } else if (strnicmp(data, "port", 4) == 0) { | |
1122 | if (value && *value) { | |
1123 | vol->port = | |
1124 | simple_strtoul(value, &value, 0); | |
1125 | } | |
1126 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1127 | if (value && *value) { | |
1128 | vol->rsize = | |
1129 | simple_strtoul(value, &value, 0); | |
1130 | } | |
1131 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1132 | if (value && *value) { | |
1133 | vol->wsize = | |
1134 | simple_strtoul(value, &value, 0); | |
1135 | } | |
1136 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1137 | if (value && *value) { | |
1138 | vol->sockopt = | |
1139 | simple_strtoul(value, &value, 0); | |
1140 | } | |
1141 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1142 | if (!value || !*value || (*value == ' ')) { | |
63135e08 | 1143 | cFYI(1, ("invalid (empty) netbiosname")); |
1da177e4 | 1144 | } else { |
50c2f753 SF |
1145 | memset(vol->source_rfc1001_name, 0x20, 15); |
1146 | for (i = 0; i < 15; i++) { | |
1147 | /* BB are there cases in which a comma can be | |
1da177e4 LT |
1148 | valid in this workstation netbios name (and need |
1149 | special handling)? */ | |
1150 | ||
1151 | /* We do not uppercase netbiosname for user */ | |
50c2f753 | 1152 | if (value[i] == 0) |
1da177e4 | 1153 | break; |
50c2f753 SF |
1154 | else |
1155 | vol->source_rfc1001_name[i] = | |
1156 | value[i]; | |
1da177e4 LT |
1157 | } |
1158 | /* The string has 16th byte zero still from | |
1159 | set at top of the function */ | |
50c2f753 SF |
1160 | if ((i == 15) && (value[i] != 0)) |
1161 | printk(KERN_WARNING "CIFS: netbiosname" | |
1162 | " longer than 15 truncated.\n"); | |
a10faeb2 SF |
1163 | } |
1164 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1165 | /* servernetbiosname specified override *SMBSERVER */ | |
1166 | if (!value || !*value || (*value == ' ')) { | |
467a8f8d | 1167 | cFYI(1, ("empty server netbiosname specified")); |
a10faeb2 SF |
1168 | } else { |
1169 | /* last byte, type, is 0x20 for servr type */ | |
50c2f753 | 1170 | memset(vol->target_rfc1001_name, 0x20, 16); |
a10faeb2 | 1171 | |
50c2f753 | 1172 | for (i = 0; i < 15; i++) { |
a10faeb2 | 1173 | /* BB are there cases in which a comma can be |
50c2f753 SF |
1174 | valid in this workstation netbios name |
1175 | (and need special handling)? */ | |
a10faeb2 | 1176 | |
50c2f753 SF |
1177 | /* user or mount helper must uppercase |
1178 | the netbiosname */ | |
1179 | if (value[i] == 0) | |
a10faeb2 SF |
1180 | break; |
1181 | else | |
50c2f753 SF |
1182 | vol->target_rfc1001_name[i] = |
1183 | value[i]; | |
a10faeb2 SF |
1184 | } |
1185 | /* The string has 16th byte zero still from | |
1186 | set at top of the function */ | |
50c2f753 SF |
1187 | if ((i == 15) && (value[i] != 0)) |
1188 | printk(KERN_WARNING "CIFS: server net" | |
1189 | "biosname longer than 15 truncated.\n"); | |
1da177e4 LT |
1190 | } |
1191 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1192 | /* ignore */ | |
1193 | } else if (strnicmp(data, "version", 3) == 0) { | |
1194 | /* ignore */ | |
50c2f753 | 1195 | } else if (strnicmp(data, "guest", 5) == 0) { |
1da177e4 LT |
1196 | /* ignore */ |
1197 | } else if (strnicmp(data, "rw", 2) == 0) { | |
4b18f2a9 | 1198 | vol->rw = true; |
edf1ae40 SF |
1199 | } else if (strnicmp(data, "noblocksend", 11) == 0) { |
1200 | vol->noblocksnd = 1; | |
1201 | } else if (strnicmp(data, "noautotune", 10) == 0) { | |
1202 | vol->noautotune = 1; | |
1da177e4 LT |
1203 | } else if ((strnicmp(data, "suid", 4) == 0) || |
1204 | (strnicmp(data, "nosuid", 6) == 0) || | |
1205 | (strnicmp(data, "exec", 4) == 0) || | |
1206 | (strnicmp(data, "noexec", 6) == 0) || | |
1207 | (strnicmp(data, "nodev", 5) == 0) || | |
1208 | (strnicmp(data, "noauto", 6) == 0) || | |
1209 | (strnicmp(data, "dev", 3) == 0)) { | |
1210 | /* The mount tool or mount.cifs helper (if present) | |
50c2f753 SF |
1211 | uses these opts to set flags, and the flags are read |
1212 | by the kernel vfs layer before we get here (ie | |
1213 | before read super) so there is no point trying to | |
1214 | parse these options again and set anything and it | |
1215 | is ok to just ignore them */ | |
1da177e4 LT |
1216 | continue; |
1217 | } else if (strnicmp(data, "ro", 2) == 0) { | |
4b18f2a9 | 1218 | vol->rw = false; |
1da177e4 LT |
1219 | } else if (strnicmp(data, "hard", 4) == 0) { |
1220 | vol->retry = 1; | |
1221 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1222 | vol->retry = 0; | |
1223 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1224 | vol->noperm = 0; | |
1225 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1226 | vol->noperm = 1; | |
6a0b4824 SF |
1227 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1228 | vol->remap = 1; | |
1229 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1230 | vol->remap = 0; | |
50c2f753 SF |
1231 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1232 | vol->sfu_emul = 1; | |
1233 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1234 | vol->sfu_emul = 0; | |
2c1b8615 SF |
1235 | } else if (strnicmp(data, "nodfs", 5) == 0) { |
1236 | vol->nodfs = 1; | |
ac67055e JA |
1237 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1238 | vol->posix_paths = 1; | |
1239 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1240 | vol->posix_paths = 0; | |
c18c842b SF |
1241 | } else if (strnicmp(data, "nounix", 6) == 0) { |
1242 | vol->no_linux_ext = 1; | |
1243 | } else if (strnicmp(data, "nolinux", 7) == 0) { | |
1244 | vol->no_linux_ext = 1; | |
50c2f753 | 1245 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
a10faeb2 | 1246 | (strnicmp(data, "ignorecase", 10) == 0)) { |
50c2f753 | 1247 | vol->nocase = 1; |
c46fa8ac SF |
1248 | } else if (strnicmp(data, "brl", 3) == 0) { |
1249 | vol->nobrl = 0; | |
50c2f753 | 1250 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1251 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1252 | vol->nobrl = 1; |
d3485d37 SF |
1253 | /* turn off mandatory locking in mode |
1254 | if remote locking is turned off since the | |
1255 | local vfs will do advisory */ | |
50c2f753 SF |
1256 | if (vol->file_mode == |
1257 | (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
d3485d37 | 1258 | vol->file_mode = S_IALLUGO; |
13a6e42a SF |
1259 | } else if (strnicmp(data, "forcemandatorylock", 9) == 0) { |
1260 | /* will take the shorter form "forcemand" as well */ | |
1261 | /* This mount option will force use of mandatory | |
1262 | (DOS/Windows style) byte range locks, instead of | |
1263 | using posix advisory byte range locks, even if the | |
1264 | Unix extensions are available and posix locks would | |
1265 | be supported otherwise. If Unix extensions are not | |
1266 | negotiated this has no effect since mandatory locks | |
1267 | would be used (mandatory locks is all that those | |
1268 | those servers support) */ | |
1269 | vol->mand_lock = 1; | |
1da177e4 LT |
1270 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1271 | vol->setuids = 1; | |
1272 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1273 | vol->setuids = 0; | |
d0a9c078 JL |
1274 | } else if (strnicmp(data, "dynperm", 7) == 0) { |
1275 | vol->dynperm = true; | |
1276 | } else if (strnicmp(data, "nodynperm", 9) == 0) { | |
1277 | vol->dynperm = false; | |
1da177e4 LT |
1278 | } else if (strnicmp(data, "nohard", 6) == 0) { |
1279 | vol->retry = 0; | |
1280 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1281 | vol->retry = 1; | |
1282 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1283 | vol->intr = 0; | |
1284 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1285 | vol->intr = 1; | |
be652445 SF |
1286 | } else if (strnicmp(data, "nostrictsync", 12) == 0) { |
1287 | vol->nostrictsync = 1; | |
1288 | } else if (strnicmp(data, "strictsync", 10) == 0) { | |
1289 | vol->nostrictsync = 0; | |
50c2f753 | 1290 | } else if (strnicmp(data, "serverino", 7) == 0) { |
1da177e4 | 1291 | vol->server_ino = 1; |
50c2f753 | 1292 | } else if (strnicmp(data, "noserverino", 9) == 0) { |
1da177e4 | 1293 | vol->server_ino = 0; |
50c2f753 | 1294 | } else if (strnicmp(data, "cifsacl", 7) == 0) { |
0a4b92c0 SF |
1295 | vol->cifs_acl = 1; |
1296 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1297 | vol->cifs_acl = 0; | |
50c2f753 | 1298 | } else if (strnicmp(data, "acl", 3) == 0) { |
1da177e4 | 1299 | vol->no_psx_acl = 0; |
50c2f753 | 1300 | } else if (strnicmp(data, "noacl", 5) == 0) { |
1da177e4 | 1301 | vol->no_psx_acl = 1; |
84210e91 SF |
1302 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
1303 | } else if (strnicmp(data, "locallease", 6) == 0) { | |
1304 | vol->local_lease = 1; | |
1305 | #endif | |
50c2f753 | 1306 | } else if (strnicmp(data, "sign", 4) == 0) { |
750d1151 | 1307 | vol->secFlg |= CIFSSEC_MUST_SIGN; |
95b1cb90 SF |
1308 | } else if (strnicmp(data, "seal", 4) == 0) { |
1309 | /* we do not do the following in secFlags because seal | |
1310 | is a per tree connection (mount) not a per socket | |
1311 | or per-smb connection option in the protocol */ | |
1312 | /* vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
1313 | vol->seal = 1; | |
50c2f753 | 1314 | } else if (strnicmp(data, "direct", 6) == 0) { |
1da177e4 | 1315 | vol->direct_io = 1; |
50c2f753 | 1316 | } else if (strnicmp(data, "forcedirectio", 13) == 0) { |
1da177e4 | 1317 | vol->direct_io = 1; |
50c2f753 | 1318 | } else if (strnicmp(data, "in6_addr", 8) == 0) { |
1da177e4 LT |
1319 | if (!value || !*value) { |
1320 | vol->in6_addr = NULL; | |
1321 | } else if (strnlen(value, 49) == 48) { | |
1322 | vol->in6_addr = value; | |
1323 | } else { | |
50c2f753 SF |
1324 | printk(KERN_WARNING "CIFS: ip v6 address not " |
1325 | "48 characters long\n"); | |
1da177e4 LT |
1326 | return 1; |
1327 | } | |
1328 | } else if (strnicmp(data, "noac", 4) == 0) { | |
50c2f753 SF |
1329 | printk(KERN_WARNING "CIFS: Mount option noac not " |
1330 | "supported. Instead set " | |
1331 | "/proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1da177e4 | 1332 | } else |
50c2f753 SF |
1333 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n", |
1334 | data); | |
1da177e4 LT |
1335 | } |
1336 | if (vol->UNC == NULL) { | |
4523cc30 | 1337 | if (devname == NULL) { |
50c2f753 SF |
1338 | printk(KERN_WARNING "CIFS: Missing UNC name for mount " |
1339 | "target\n"); | |
1da177e4 LT |
1340 | return 1; |
1341 | } | |
1342 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
50c2f753 | 1343 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1344 | if (vol->UNC == NULL) |
1da177e4 | 1345 | return 1; |
50c2f753 | 1346 | strcpy(vol->UNC, devname); |
1da177e4 LT |
1347 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1348 | vol->UNC[0] = '\\'; | |
1349 | vol->UNC[1] = '\\'; | |
1350 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
50c2f753 SF |
1351 | printk(KERN_WARNING "CIFS: UNC Path does not " |
1352 | "begin with // or \\\\ \n"); | |
1da177e4 LT |
1353 | return 1; |
1354 | } | |
7c5e628f IM |
1355 | value = strpbrk(vol->UNC+2, "/\\"); |
1356 | if (value) | |
1357 | *value = '\\'; | |
1da177e4 LT |
1358 | } else { |
1359 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1360 | return 1; | |
1361 | } | |
1362 | } | |
fb8c4b14 | 1363 | if (vol->UNCip == NULL) |
1da177e4 LT |
1364 | vol->UNCip = &vol->UNC[2]; |
1365 | ||
1366 | return 0; | |
1367 | } | |
1368 | ||
e7ddee90 | 1369 | static struct TCP_Server_Info * |
a9ac49d3 | 1370 | cifs_find_tcp_session(struct sockaddr_storage *addr) |
1da177e4 LT |
1371 | { |
1372 | struct list_head *tmp; | |
e7ddee90 JL |
1373 | struct TCP_Server_Info *server; |
1374 | struct sockaddr_in *addr4 = (struct sockaddr_in *) addr; | |
1375 | struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *) addr; | |
1376 | ||
1377 | write_lock(&cifs_tcp_ses_lock); | |
1378 | list_for_each(tmp, &cifs_tcp_ses_list) { | |
1379 | server = list_entry(tmp, struct TCP_Server_Info, | |
1380 | tcp_ses_list); | |
e7ddee90 JL |
1381 | /* |
1382 | * the demux thread can exit on its own while still in CifsNew | |
1383 | * so don't accept any sockets in that state. Since the | |
1384 | * tcpStatus never changes back to CifsNew it's safe to check | |
1385 | * for this without a lock. | |
1386 | */ | |
1387 | if (server->tcpStatus == CifsNew) | |
1b20d672 | 1388 | continue; |
1da177e4 | 1389 | |
a9ac49d3 | 1390 | if (addr->ss_family == AF_INET && |
e7ddee90 JL |
1391 | (addr4->sin_addr.s_addr != |
1392 | server->addr.sockAddr.sin_addr.s_addr)) | |
1393 | continue; | |
a9ac49d3 | 1394 | else if (addr->ss_family == AF_INET6 && |
0e2bedaa SF |
1395 | !ipv6_addr_equal(&server->addr.sockAddr6.sin6_addr, |
1396 | &addr6->sin6_addr)) | |
1b20d672 CG |
1397 | continue; |
1398 | ||
e7ddee90 JL |
1399 | ++server->srv_count; |
1400 | write_unlock(&cifs_tcp_ses_lock); | |
d82c2df5 | 1401 | cFYI(1, ("Existing tcp session with server found")); |
e7ddee90 | 1402 | return server; |
1da177e4 | 1403 | } |
e7ddee90 | 1404 | write_unlock(&cifs_tcp_ses_lock); |
1da177e4 LT |
1405 | return NULL; |
1406 | } | |
1b20d672 | 1407 | |
14fbf50d | 1408 | static void |
e7ddee90 | 1409 | cifs_put_tcp_session(struct TCP_Server_Info *server) |
1da177e4 | 1410 | { |
e7ddee90 | 1411 | struct task_struct *task; |
1b20d672 | 1412 | |
e7ddee90 JL |
1413 | write_lock(&cifs_tcp_ses_lock); |
1414 | if (--server->srv_count > 0) { | |
1415 | write_unlock(&cifs_tcp_ses_lock); | |
1416 | return; | |
1da177e4 | 1417 | } |
1b20d672 | 1418 | |
e7ddee90 JL |
1419 | list_del_init(&server->tcp_ses_list); |
1420 | write_unlock(&cifs_tcp_ses_lock); | |
dea570e0 | 1421 | |
e7ddee90 JL |
1422 | spin_lock(&GlobalMid_Lock); |
1423 | server->tcpStatus = CifsExiting; | |
1424 | spin_unlock(&GlobalMid_Lock); | |
dea570e0 | 1425 | |
e7ddee90 JL |
1426 | task = xchg(&server->tsk, NULL); |
1427 | if (task) | |
1428 | force_sig(SIGKILL, task); | |
1da177e4 LT |
1429 | } |
1430 | ||
63c038c2 JL |
1431 | static struct TCP_Server_Info * |
1432 | cifs_get_tcp_session(struct smb_vol *volume_info) | |
1433 | { | |
1434 | struct TCP_Server_Info *tcp_ses = NULL; | |
a9ac49d3 | 1435 | struct sockaddr_storage addr; |
63c038c2 JL |
1436 | struct sockaddr_in *sin_server = (struct sockaddr_in *) &addr; |
1437 | struct sockaddr_in6 *sin_server6 = (struct sockaddr_in6 *) &addr; | |
1438 | int rc; | |
1439 | ||
a9ac49d3 | 1440 | memset(&addr, 0, sizeof(struct sockaddr_storage)); |
63c038c2 JL |
1441 | |
1442 | if (volume_info->UNCip && volume_info->UNC) { | |
1443 | rc = cifs_inet_pton(AF_INET, volume_info->UNCip, | |
1444 | &sin_server->sin_addr.s_addr); | |
1445 | ||
1446 | if (rc <= 0) { | |
1447 | /* not ipv4 address, try ipv6 */ | |
1448 | rc = cifs_inet_pton(AF_INET6, volume_info->UNCip, | |
1449 | &sin_server6->sin6_addr.in6_u); | |
1450 | if (rc > 0) | |
a9ac49d3 | 1451 | addr.ss_family = AF_INET6; |
63c038c2 | 1452 | } else { |
a9ac49d3 | 1453 | addr.ss_family = AF_INET; |
63c038c2 JL |
1454 | } |
1455 | ||
1456 | if (rc <= 0) { | |
1457 | /* we failed translating address */ | |
1458 | rc = -EINVAL; | |
1459 | goto out_err; | |
1460 | } | |
1461 | ||
1462 | cFYI(1, ("UNC: %s ip: %s", volume_info->UNC, | |
1463 | volume_info->UNCip)); | |
1464 | } else if (volume_info->UNCip) { | |
1465 | /* BB using ip addr as tcp_ses name to connect to the | |
1466 | DFS root below */ | |
1467 | cERROR(1, ("Connecting to DFS root not implemented yet")); | |
1468 | rc = -EINVAL; | |
1469 | goto out_err; | |
1470 | } else /* which tcp_sess DFS root would we conect to */ { | |
1471 | cERROR(1, | |
1472 | ("CIFS mount error: No UNC path (e.g. -o " | |
1473 | "unc=//192.168.1.100/public) specified")); | |
1474 | rc = -EINVAL; | |
1475 | goto out_err; | |
1476 | } | |
1477 | ||
1478 | /* see if we already have a matching tcp_ses */ | |
1479 | tcp_ses = cifs_find_tcp_session(&addr); | |
1480 | if (tcp_ses) | |
1481 | return tcp_ses; | |
1482 | ||
1483 | tcp_ses = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); | |
1484 | if (!tcp_ses) { | |
1485 | rc = -ENOMEM; | |
1486 | goto out_err; | |
1487 | } | |
1488 | ||
1489 | tcp_ses->hostname = extract_hostname(volume_info->UNC); | |
1490 | if (IS_ERR(tcp_ses->hostname)) { | |
1491 | rc = PTR_ERR(tcp_ses->hostname); | |
1492 | goto out_err; | |
1493 | } | |
1494 | ||
1495 | tcp_ses->noblocksnd = volume_info->noblocksnd; | |
1496 | tcp_ses->noautotune = volume_info->noautotune; | |
1497 | atomic_set(&tcp_ses->inFlight, 0); | |
1498 | init_waitqueue_head(&tcp_ses->response_q); | |
1499 | init_waitqueue_head(&tcp_ses->request_q); | |
1500 | INIT_LIST_HEAD(&tcp_ses->pending_mid_q); | |
1501 | mutex_init(&tcp_ses->srv_mutex); | |
1502 | memcpy(tcp_ses->workstation_RFC1001_name, | |
1503 | volume_info->source_rfc1001_name, RFC1001_NAME_LEN_WITH_NULL); | |
1504 | memcpy(tcp_ses->server_RFC1001_name, | |
1505 | volume_info->target_rfc1001_name, RFC1001_NAME_LEN_WITH_NULL); | |
1506 | tcp_ses->sequence_number = 0; | |
1507 | INIT_LIST_HEAD(&tcp_ses->tcp_ses_list); | |
1508 | INIT_LIST_HEAD(&tcp_ses->smb_ses_list); | |
1509 | ||
1510 | /* | |
1511 | * at this point we are the only ones with the pointer | |
1512 | * to the struct since the kernel thread not created yet | |
1513 | * no need to spinlock this init of tcpStatus or srv_count | |
1514 | */ | |
1515 | tcp_ses->tcpStatus = CifsNew; | |
1516 | ++tcp_ses->srv_count; | |
1517 | ||
a9ac49d3 | 1518 | if (addr.ss_family == AF_INET6) { |
63c038c2 JL |
1519 | cFYI(1, ("attempting ipv6 connect")); |
1520 | /* BB should we allow ipv6 on port 139? */ | |
1521 | /* other OS never observed in Wild doing 139 with v6 */ | |
1522 | memcpy(&tcp_ses->addr.sockAddr6, sin_server6, | |
1523 | sizeof(struct sockaddr_in6)); | |
1524 | sin_server6->sin6_port = htons(volume_info->port); | |
d5c5605c | 1525 | rc = ipv6_connect(tcp_ses); |
63c038c2 JL |
1526 | } else { |
1527 | memcpy(&tcp_ses->addr.sockAddr, sin_server, | |
1528 | sizeof(struct sockaddr_in)); | |
1529 | sin_server->sin_port = htons(volume_info->port); | |
bcf4b106 | 1530 | rc = ipv4_connect(tcp_ses); |
63c038c2 JL |
1531 | } |
1532 | if (rc < 0) { | |
1533 | cERROR(1, ("Error connecting to socket. Aborting operation")); | |
1534 | goto out_err; | |
1535 | } | |
1536 | ||
1537 | /* | |
1538 | * since we're in a cifs function already, we know that | |
1539 | * this will succeed. No need for try_module_get(). | |
1540 | */ | |
1541 | __module_get(THIS_MODULE); | |
1542 | tcp_ses->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, | |
1543 | tcp_ses, "cifsd"); | |
1544 | if (IS_ERR(tcp_ses->tsk)) { | |
1545 | rc = PTR_ERR(tcp_ses->tsk); | |
1546 | cERROR(1, ("error %d create cifsd thread", rc)); | |
1547 | module_put(THIS_MODULE); | |
1548 | goto out_err; | |
1549 | } | |
1550 | ||
1551 | /* thread spawned, put it on the list */ | |
1552 | write_lock(&cifs_tcp_ses_lock); | |
1553 | list_add(&tcp_ses->tcp_ses_list, &cifs_tcp_ses_list); | |
1554 | write_unlock(&cifs_tcp_ses_lock); | |
1555 | ||
1556 | return tcp_ses; | |
1557 | ||
1558 | out_err: | |
1559 | if (tcp_ses) { | |
1560 | kfree(tcp_ses->hostname); | |
1561 | if (tcp_ses->ssocket) | |
1562 | sock_release(tcp_ses->ssocket); | |
1563 | kfree(tcp_ses); | |
1564 | } | |
1565 | return ERR_PTR(rc); | |
1566 | } | |
1567 | ||
14fbf50d JL |
1568 | static struct cifsSesInfo * |
1569 | cifs_find_smb_ses(struct TCP_Server_Info *server, char *username) | |
1da177e4 LT |
1570 | { |
1571 | struct list_head *tmp; | |
14fbf50d | 1572 | struct cifsSesInfo *ses; |
dea570e0 | 1573 | |
14fbf50d JL |
1574 | write_lock(&cifs_tcp_ses_lock); |
1575 | list_for_each(tmp, &server->smb_ses_list) { | |
1576 | ses = list_entry(tmp, struct cifsSesInfo, smb_ses_list); | |
1577 | if (strncmp(ses->userName, username, MAX_USERNAME_SIZE)) | |
dea570e0 SF |
1578 | continue; |
1579 | ||
14fbf50d JL |
1580 | ++ses->ses_count; |
1581 | write_unlock(&cifs_tcp_ses_lock); | |
1582 | return ses; | |
1583 | } | |
1584 | write_unlock(&cifs_tcp_ses_lock); | |
1585 | return NULL; | |
1586 | } | |
dea570e0 | 1587 | |
14fbf50d JL |
1588 | static void |
1589 | cifs_put_smb_ses(struct cifsSesInfo *ses) | |
1590 | { | |
1591 | int xid; | |
1592 | struct TCP_Server_Info *server = ses->server; | |
dea570e0 | 1593 | |
14fbf50d JL |
1594 | write_lock(&cifs_tcp_ses_lock); |
1595 | if (--ses->ses_count > 0) { | |
1596 | write_unlock(&cifs_tcp_ses_lock); | |
1597 | return; | |
1598 | } | |
dea570e0 | 1599 | |
14fbf50d JL |
1600 | list_del_init(&ses->smb_ses_list); |
1601 | write_unlock(&cifs_tcp_ses_lock); | |
dea570e0 | 1602 | |
14fbf50d JL |
1603 | if (ses->status == CifsGood) { |
1604 | xid = GetXid(); | |
1605 | CIFSSMBLogoff(xid, ses); | |
1606 | _FreeXid(xid); | |
1607 | } | |
1608 | sesInfoFree(ses); | |
1609 | cifs_put_tcp_session(server); | |
1610 | } | |
dea570e0 | 1611 | |
f1987b44 JL |
1612 | static struct cifsTconInfo * |
1613 | cifs_find_tcon(struct cifsSesInfo *ses, const char *unc) | |
1614 | { | |
1615 | struct list_head *tmp; | |
1616 | struct cifsTconInfo *tcon; | |
1617 | ||
1618 | write_lock(&cifs_tcp_ses_lock); | |
1619 | list_for_each(tmp, &ses->tcon_list) { | |
1620 | tcon = list_entry(tmp, struct cifsTconInfo, tcon_list); | |
1621 | if (tcon->tidStatus == CifsExiting) | |
1622 | continue; | |
1623 | if (strncmp(tcon->treeName, unc, MAX_TREE_SIZE)) | |
dea570e0 SF |
1624 | continue; |
1625 | ||
f1987b44 JL |
1626 | ++tcon->tc_count; |
1627 | write_unlock(&cifs_tcp_ses_lock); | |
dea570e0 | 1628 | return tcon; |
1da177e4 | 1629 | } |
f1987b44 | 1630 | write_unlock(&cifs_tcp_ses_lock); |
1da177e4 LT |
1631 | return NULL; |
1632 | } | |
1633 | ||
f1987b44 JL |
1634 | static void |
1635 | cifs_put_tcon(struct cifsTconInfo *tcon) | |
1636 | { | |
1637 | int xid; | |
1638 | struct cifsSesInfo *ses = tcon->ses; | |
1639 | ||
1640 | write_lock(&cifs_tcp_ses_lock); | |
1641 | if (--tcon->tc_count > 0) { | |
1642 | write_unlock(&cifs_tcp_ses_lock); | |
1643 | return; | |
1644 | } | |
1645 | ||
1646 | list_del_init(&tcon->tcon_list); | |
1647 | write_unlock(&cifs_tcp_ses_lock); | |
1648 | ||
1649 | xid = GetXid(); | |
1650 | CIFSSMBTDis(xid, tcon); | |
1651 | _FreeXid(xid); | |
1652 | ||
1653 | DeleteTconOplockQEntries(tcon); | |
1654 | tconInfoFree(tcon); | |
1655 | cifs_put_smb_ses(ses); | |
1656 | } | |
1657 | ||
1da177e4 | 1658 | int |
50c2f753 SF |
1659 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, |
1660 | const struct nls_table *nls_codepage, unsigned int *pnum_referrals, | |
366781c1 | 1661 | struct dfs_info3_param **preferrals, int remap) |
1da177e4 LT |
1662 | { |
1663 | char *temp_unc; | |
1664 | int rc = 0; | |
1665 | ||
1666 | *pnum_referrals = 0; | |
366781c1 | 1667 | *preferrals = NULL; |
1da177e4 LT |
1668 | |
1669 | if (pSesInfo->ipc_tid == 0) { | |
1670 | temp_unc = kmalloc(2 /* for slashes */ + | |
50c2f753 SF |
1671 | strnlen(pSesInfo->serverName, |
1672 | SERVER_NAME_LEN_WITH_NULL * 2) | |
1da177e4 LT |
1673 | + 1 + 4 /* slash IPC$ */ + 2, |
1674 | GFP_KERNEL); | |
1675 | if (temp_unc == NULL) | |
1676 | return -ENOMEM; | |
1677 | temp_unc[0] = '\\'; | |
1678 | temp_unc[1] = '\\'; | |
1679 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1680 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1681 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1682 | cFYI(1, | |
50c2f753 | 1683 | ("CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid)); |
1da177e4 LT |
1684 | kfree(temp_unc); |
1685 | } | |
1686 | if (rc == 0) | |
c2cf07d5 | 1687 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, |
737b758c | 1688 | pnum_referrals, nls_codepage, remap); |
366781c1 SF |
1689 | /* BB map targetUNCs to dfs_info3 structures, here or |
1690 | in CIFSGetDFSRefer BB */ | |
1da177e4 LT |
1691 | |
1692 | return rc; | |
1693 | } | |
1694 | ||
09e50d55 JL |
1695 | #ifdef CONFIG_DEBUG_LOCK_ALLOC |
1696 | static struct lock_class_key cifs_key[2]; | |
1697 | static struct lock_class_key cifs_slock_key[2]; | |
1698 | ||
1699 | static inline void | |
1700 | cifs_reclassify_socket4(struct socket *sock) | |
1701 | { | |
1702 | struct sock *sk = sock->sk; | |
1703 | BUG_ON(sock_owned_by_user(sk)); | |
1704 | sock_lock_init_class_and_name(sk, "slock-AF_INET-CIFS", | |
1705 | &cifs_slock_key[0], "sk_lock-AF_INET-CIFS", &cifs_key[0]); | |
1706 | } | |
1707 | ||
1708 | static inline void | |
1709 | cifs_reclassify_socket6(struct socket *sock) | |
1710 | { | |
1711 | struct sock *sk = sock->sk; | |
1712 | BUG_ON(sock_owned_by_user(sk)); | |
1713 | sock_lock_init_class_and_name(sk, "slock-AF_INET6-CIFS", | |
1714 | &cifs_slock_key[1], "sk_lock-AF_INET6-CIFS", &cifs_key[1]); | |
1715 | } | |
1716 | #else | |
1717 | static inline void | |
1718 | cifs_reclassify_socket4(struct socket *sock) | |
1719 | { | |
1720 | } | |
1721 | ||
1722 | static inline void | |
1723 | cifs_reclassify_socket6(struct socket *sock) | |
1724 | { | |
1725 | } | |
1726 | #endif | |
1727 | ||
1da177e4 | 1728 | /* See RFC1001 section 14 on representation of Netbios names */ |
50c2f753 | 1729 | static void rfc1002mangle(char *target, char *source, unsigned int length) |
1da177e4 | 1730 | { |
50c2f753 | 1731 | unsigned int i, j; |
1da177e4 | 1732 | |
50c2f753 | 1733 | for (i = 0, j = 0; i < (length); i++) { |
1da177e4 LT |
1734 | /* mask a nibble at a time and encode */ |
1735 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1736 | target[j+1] = 'A' + (0x0F & source[i]); | |
50c2f753 | 1737 | j += 2; |
1da177e4 LT |
1738 | } |
1739 | ||
1740 | } | |
1741 | ||
1742 | ||
1743 | static int | |
bcf4b106 | 1744 | ipv4_connect(struct TCP_Server_Info *server) |
1da177e4 LT |
1745 | { |
1746 | int rc = 0; | |
bcf4b106 | 1747 | bool connected = false; |
1da177e4 | 1748 | __be16 orig_port = 0; |
bcf4b106 | 1749 | struct socket *socket = server->ssocket; |
1da177e4 | 1750 | |
bcf4b106 | 1751 | if (socket == NULL) { |
50c2f753 | 1752 | rc = sock_create_kern(PF_INET, SOCK_STREAM, |
bcf4b106 | 1753 | IPPROTO_TCP, &socket); |
1da177e4 | 1754 | if (rc < 0) { |
50c2f753 | 1755 | cERROR(1, ("Error %d creating socket", rc)); |
1da177e4 | 1756 | return rc; |
1da177e4 | 1757 | } |
bcf4b106 JL |
1758 | |
1759 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1760 | cFYI(1, ("Socket created")); | |
1761 | server->ssocket = socket; | |
1762 | socket->sk->sk_allocation = GFP_NOFS; | |
1763 | cifs_reclassify_socket4(socket); | |
1da177e4 LT |
1764 | } |
1765 | ||
bcf4b106 JL |
1766 | /* user overrode default port */ |
1767 | if (server->addr.sockAddr.sin_port) { | |
1768 | rc = socket->ops->connect(socket, (struct sockaddr *) | |
1769 | &server->addr.sockAddr, | |
1770 | sizeof(struct sockaddr_in), 0); | |
1da177e4 | 1771 | if (rc >= 0) |
bcf4b106 | 1772 | connected = true; |
50c2f753 | 1773 | } |
1da177e4 | 1774 | |
fb8c4b14 | 1775 | if (!connected) { |
50c2f753 | 1776 | /* save original port so we can retry user specified port |
1da177e4 | 1777 | later if fall back ports fail this time */ |
bcf4b106 | 1778 | orig_port = server->addr.sockAddr.sin_port; |
1da177e4 LT |
1779 | |
1780 | /* do not retry on the same port we just failed on */ | |
bcf4b106 JL |
1781 | if (server->addr.sockAddr.sin_port != htons(CIFS_PORT)) { |
1782 | server->addr.sockAddr.sin_port = htons(CIFS_PORT); | |
1783 | rc = socket->ops->connect(socket, | |
1784 | (struct sockaddr *) | |
1785 | &server->addr.sockAddr, | |
1786 | sizeof(struct sockaddr_in), 0); | |
1da177e4 | 1787 | if (rc >= 0) |
bcf4b106 | 1788 | connected = true; |
1da177e4 LT |
1789 | } |
1790 | } | |
1791 | if (!connected) { | |
bcf4b106 JL |
1792 | server->addr.sockAddr.sin_port = htons(RFC1001_PORT); |
1793 | rc = socket->ops->connect(socket, (struct sockaddr *) | |
1794 | &server->addr.sockAddr, | |
6345a3a8 | 1795 | sizeof(struct sockaddr_in), 0); |
50c2f753 | 1796 | if (rc >= 0) |
bcf4b106 | 1797 | connected = true; |
1da177e4 LT |
1798 | } |
1799 | ||
1800 | /* give up here - unless we want to retry on different | |
1801 | protocol families some day */ | |
1802 | if (!connected) { | |
fb8c4b14 | 1803 | if (orig_port) |
bcf4b106 | 1804 | server->addr.sockAddr.sin_port = orig_port; |
50c2f753 | 1805 | cFYI(1, ("Error %d connecting to server via ipv4", rc)); |
bcf4b106 JL |
1806 | sock_release(socket); |
1807 | server->ssocket = NULL; | |
1da177e4 LT |
1808 | return rc; |
1809 | } | |
bcf4b106 JL |
1810 | |
1811 | ||
1812 | /* | |
1813 | * Eventually check for other socket options to change from | |
1814 | * the default. sock_setsockopt not used because it expects | |
1815 | * user space buffer | |
1816 | */ | |
1817 | socket->sk->sk_rcvtimeo = 7 * HZ; | |
da505c38 | 1818 | socket->sk->sk_sndtimeo = 5 * HZ; |
edf1ae40 | 1819 | |
b387eaeb | 1820 | /* make the bufsizes depend on wsize/rsize and max requests */ |
bcf4b106 JL |
1821 | if (server->noautotune) { |
1822 | if (socket->sk->sk_sndbuf < (200 * 1024)) | |
1823 | socket->sk->sk_sndbuf = 200 * 1024; | |
1824 | if (socket->sk->sk_rcvbuf < (140 * 1024)) | |
1825 | socket->sk->sk_rcvbuf = 140 * 1024; | |
edf1ae40 | 1826 | } |
1da177e4 | 1827 | |
bcf4b106 JL |
1828 | cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", |
1829 | socket->sk->sk_sndbuf, | |
1830 | socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo)); | |
1831 | ||
1da177e4 | 1832 | /* send RFC1001 sessinit */ |
bcf4b106 | 1833 | if (server->addr.sockAddr.sin_port == htons(RFC1001_PORT)) { |
1da177e4 | 1834 | /* some servers require RFC1001 sessinit before sending |
50c2f753 | 1835 | negprot - BB check reconnection in case where second |
1da177e4 | 1836 | sessinit is sent but no second negprot */ |
50c2f753 SF |
1837 | struct rfc1002_session_packet *ses_init_buf; |
1838 | struct smb_hdr *smb_buf; | |
1839 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), | |
1840 | GFP_KERNEL); | |
fb8c4b14 | 1841 | if (ses_init_buf) { |
1da177e4 | 1842 | ses_init_buf->trailer.session_req.called_len = 32; |
bcf4b106 JL |
1843 | if (server->server_RFC1001_name && |
1844 | server->server_RFC1001_name[0] != 0) | |
8ecaf67a JL |
1845 | rfc1002mangle(ses_init_buf->trailer. |
1846 | session_req.called_name, | |
bcf4b106 | 1847 | server->server_RFC1001_name, |
8ecaf67a | 1848 | RFC1001_NAME_LEN_WITH_NULL); |
bcf4b106 | 1849 | else |
8ecaf67a JL |
1850 | rfc1002mangle(ses_init_buf->trailer. |
1851 | session_req.called_name, | |
1852 | DEFAULT_CIFS_CALLED_NAME, | |
1853 | RFC1001_NAME_LEN_WITH_NULL); | |
a10faeb2 | 1854 | |
1da177e4 | 1855 | ses_init_buf->trailer.session_req.calling_len = 32; |
bcf4b106 | 1856 | |
1da177e4 LT |
1857 | /* calling name ends in null (byte 16) from old smb |
1858 | convention. */ | |
bcf4b106 JL |
1859 | if (server->workstation_RFC1001_name && |
1860 | server->workstation_RFC1001_name[0] != 0) | |
8ecaf67a JL |
1861 | rfc1002mangle(ses_init_buf->trailer. |
1862 | session_req.calling_name, | |
bcf4b106 | 1863 | server->workstation_RFC1001_name, |
8ecaf67a | 1864 | RFC1001_NAME_LEN_WITH_NULL); |
bcf4b106 | 1865 | else |
8ecaf67a JL |
1866 | rfc1002mangle(ses_init_buf->trailer. |
1867 | session_req.calling_name, | |
1868 | "LINUX_CIFS_CLNT", | |
1869 | RFC1001_NAME_LEN_WITH_NULL); | |
bcf4b106 | 1870 | |
1da177e4 LT |
1871 | ses_init_buf->trailer.session_req.scope1 = 0; |
1872 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1873 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1874 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1875 | smb_buf->smb_buf_length = 0x81000044; | |
0496e02d | 1876 | rc = smb_send(server, smb_buf, 0x44); |
1da177e4 | 1877 | kfree(ses_init_buf); |
50c2f753 | 1878 | msleep(1); /* RFC1001 layer in at least one server |
083d3a2c SF |
1879 | requires very short break before negprot |
1880 | presumably because not expecting negprot | |
1881 | to follow so fast. This is a simple | |
50c2f753 | 1882 | solution that works without |
083d3a2c SF |
1883 | complicating the code and causes no |
1884 | significant slowing down on mount | |
1885 | for everyone else */ | |
1da177e4 | 1886 | } |
50c2f753 | 1887 | /* else the negprot may still work without this |
1da177e4 | 1888 | even though malloc failed */ |
50c2f753 | 1889 | |
1da177e4 | 1890 | } |
50c2f753 | 1891 | |
1da177e4 LT |
1892 | return rc; |
1893 | } | |
1894 | ||
1895 | static int | |
d5c5605c | 1896 | ipv6_connect(struct TCP_Server_Info *server) |
1da177e4 LT |
1897 | { |
1898 | int rc = 0; | |
d5c5605c | 1899 | bool connected = false; |
1da177e4 | 1900 | __be16 orig_port = 0; |
d5c5605c | 1901 | struct socket *socket = server->ssocket; |
1da177e4 | 1902 | |
d5c5605c | 1903 | if (socket == NULL) { |
50c2f753 | 1904 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, |
d5c5605c | 1905 | IPPROTO_TCP, &socket); |
1da177e4 | 1906 | if (rc < 0) { |
50c2f753 | 1907 | cERROR(1, ("Error %d creating ipv6 socket", rc)); |
d5c5605c | 1908 | socket = NULL; |
1da177e4 | 1909 | return rc; |
1da177e4 | 1910 | } |
1da177e4 | 1911 | |
d5c5605c JL |
1912 | /* BB other socket options to set KEEPALIVE, NODELAY? */ |
1913 | cFYI(1, ("ipv6 Socket created")); | |
1914 | server->ssocket = socket; | |
1915 | socket->sk->sk_allocation = GFP_NOFS; | |
1916 | cifs_reclassify_socket6(socket); | |
1917 | } | |
1da177e4 | 1918 | |
d5c5605c JL |
1919 | /* user overrode default port */ |
1920 | if (server->addr.sockAddr6.sin6_port) { | |
1921 | rc = socket->ops->connect(socket, | |
1922 | (struct sockaddr *) &server->addr.sockAddr6, | |
6345a3a8 | 1923 | sizeof(struct sockaddr_in6), 0); |
1da177e4 | 1924 | if (rc >= 0) |
d5c5605c | 1925 | connected = true; |
50c2f753 | 1926 | } |
1da177e4 | 1927 | |
fb8c4b14 | 1928 | if (!connected) { |
50c2f753 | 1929 | /* save original port so we can retry user specified port |
1da177e4 LT |
1930 | later if fall back ports fail this time */ |
1931 | ||
d5c5605c | 1932 | orig_port = server->addr.sockAddr6.sin6_port; |
1da177e4 | 1933 | /* do not retry on the same port we just failed on */ |
d5c5605c JL |
1934 | if (server->addr.sockAddr6.sin6_port != htons(CIFS_PORT)) { |
1935 | server->addr.sockAddr6.sin6_port = htons(CIFS_PORT); | |
1936 | rc = socket->ops->connect(socket, (struct sockaddr *) | |
1937 | &server->addr.sockAddr6, | |
6345a3a8 | 1938 | sizeof(struct sockaddr_in6), 0); |
1da177e4 | 1939 | if (rc >= 0) |
d5c5605c | 1940 | connected = true; |
1da177e4 LT |
1941 | } |
1942 | } | |
1943 | if (!connected) { | |
d5c5605c JL |
1944 | server->addr.sockAddr6.sin6_port = htons(RFC1001_PORT); |
1945 | rc = socket->ops->connect(socket, (struct sockaddr *) | |
1946 | &server->addr.sockAddr6, | |
1947 | sizeof(struct sockaddr_in6), 0); | |
50c2f753 | 1948 | if (rc >= 0) |
d5c5605c | 1949 | connected = true; |
1da177e4 LT |
1950 | } |
1951 | ||
1952 | /* give up here - unless we want to retry on different | |
1953 | protocol families some day */ | |
1954 | if (!connected) { | |
fb8c4b14 | 1955 | if (orig_port) |
d5c5605c | 1956 | server->addr.sockAddr6.sin6_port = orig_port; |
50c2f753 | 1957 | cFYI(1, ("Error %d connecting to server via ipv6", rc)); |
d5c5605c JL |
1958 | sock_release(socket); |
1959 | server->ssocket = NULL; | |
1da177e4 LT |
1960 | return rc; |
1961 | } | |
edf1ae40 | 1962 | |
d5c5605c JL |
1963 | /* |
1964 | * Eventually check for other socket options to change from | |
1965 | * the default. sock_setsockopt not used because it expects | |
1966 | * user space buffer | |
1967 | */ | |
1968 | socket->sk->sk_rcvtimeo = 7 * HZ; | |
da505c38 | 1969 | socket->sk->sk_sndtimeo = 5 * HZ; |
d5c5605c | 1970 | server->ssocket = socket; |
50c2f753 | 1971 | |
1da177e4 LT |
1972 | return rc; |
1973 | } | |
1974 | ||
50c2f753 SF |
1975 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon, |
1976 | struct super_block *sb, struct smb_vol *vol_info) | |
8af18971 SF |
1977 | { |
1978 | /* if we are reconnecting then should we check to see if | |
1979 | * any requested capabilities changed locally e.g. via | |
1980 | * remount but we can not do much about it here | |
1981 | * if they have (even if we could detect it by the following) | |
1982 | * Perhaps we could add a backpointer to array of sb from tcon | |
1983 | * or if we change to make all sb to same share the same | |
1984 | * sb as NFS - then we only have one backpointer to sb. | |
1985 | * What if we wanted to mount the server share twice once with | |
1986 | * and once without posixacls or posix paths? */ | |
1987 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
50c2f753 | 1988 | |
c18c842b SF |
1989 | if (vol_info && vol_info->no_linux_ext) { |
1990 | tcon->fsUnixInfo.Capability = 0; | |
1991 | tcon->unix_ext = 0; /* Unix Extensions disabled */ | |
1992 | cFYI(1, ("Linux protocol extensions disabled")); | |
1993 | return; | |
1994 | } else if (vol_info) | |
1995 | tcon->unix_ext = 1; /* Unix Extensions supported */ | |
1996 | ||
1997 | if (tcon->unix_ext == 0) { | |
1998 | cFYI(1, ("Unix extensions disabled so not set on reconnect")); | |
1999 | return; | |
2000 | } | |
50c2f753 | 2001 | |
fb8c4b14 | 2002 | if (!CIFSSMBQFSUnixInfo(xid, tcon)) { |
8af18971 | 2003 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
50c2f753 | 2004 | |
8af18971 SF |
2005 | /* check for reconnect case in which we do not |
2006 | want to change the mount behavior if we can avoid it */ | |
fb8c4b14 | 2007 | if (vol_info == NULL) { |
50c2f753 | 2008 | /* turn off POSIX ACL and PATHNAMES if not set |
8af18971 SF |
2009 | originally at mount time */ |
2010 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) | |
2011 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
11b6d645 IM |
2012 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
2013 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) | |
2014 | cERROR(1, ("POSIXPATH support change")); | |
8af18971 | 2015 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
11b6d645 IM |
2016 | } else if ((cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
2017 | cERROR(1, ("possible reconnect error")); | |
2018 | cERROR(1, | |
2019 | ("server disabled POSIX path support")); | |
2020 | } | |
8af18971 | 2021 | } |
50c2f753 | 2022 | |
8af18971 | 2023 | cap &= CIFS_UNIX_CAP_MASK; |
75865f8c | 2024 | if (vol_info && vol_info->no_psx_acl) |
8af18971 | 2025 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
75865f8c | 2026 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
fb8c4b14 SF |
2027 | cFYI(1, ("negotiated posix acl support")); |
2028 | if (sb) | |
8af18971 SF |
2029 | sb->s_flags |= MS_POSIXACL; |
2030 | } | |
2031 | ||
75865f8c | 2032 | if (vol_info && vol_info->posix_paths == 0) |
8af18971 | 2033 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
75865f8c | 2034 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
fb8c4b14 | 2035 | cFYI(1, ("negotiate posix pathnames")); |
75865f8c | 2036 | if (sb) |
50c2f753 | 2037 | CIFS_SB(sb)->mnt_cifs_flags |= |
8af18971 SF |
2038 | CIFS_MOUNT_POSIX_PATHS; |
2039 | } | |
50c2f753 | 2040 | |
984acfe1 SF |
2041 | /* We might be setting the path sep back to a different |
2042 | form if we are reconnecting and the server switched its | |
50c2f753 | 2043 | posix path capability for this share */ |
75865f8c | 2044 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
984acfe1 | 2045 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
75865f8c SF |
2046 | |
2047 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { | |
2048 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { | |
2049 | CIFS_SB(sb)->rsize = 127 * 1024; | |
90c81e0b SF |
2050 | cFYI(DBG2, |
2051 | ("larger reads not supported by srv")); | |
75865f8c SF |
2052 | } |
2053 | } | |
50c2f753 SF |
2054 | |
2055 | ||
2056 | cFYI(1, ("Negotiate caps 0x%x", (int)cap)); | |
8af18971 | 2057 | #ifdef CONFIG_CIFS_DEBUG2 |
75865f8c | 2058 | if (cap & CIFS_UNIX_FCNTL_CAP) |
fb8c4b14 | 2059 | cFYI(1, ("FCNTL cap")); |
75865f8c | 2060 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
fb8c4b14 | 2061 | cFYI(1, ("EXTATTR cap")); |
75865f8c | 2062 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
fb8c4b14 | 2063 | cFYI(1, ("POSIX path cap")); |
75865f8c | 2064 | if (cap & CIFS_UNIX_XATTR_CAP) |
fb8c4b14 | 2065 | cFYI(1, ("XATTR cap")); |
75865f8c | 2066 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
fb8c4b14 | 2067 | cFYI(1, ("POSIX ACL cap")); |
75865f8c | 2068 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
fb8c4b14 | 2069 | cFYI(1, ("very large read cap")); |
75865f8c | 2070 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) |
fb8c4b14 | 2071 | cFYI(1, ("very large write cap")); |
8af18971 SF |
2072 | #endif /* CIFS_DEBUG2 */ |
2073 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
442aa310 | 2074 | if (vol_info == NULL) { |
5a44b319 | 2075 | cFYI(1, ("resetting capabilities failed")); |
442aa310 | 2076 | } else |
5a44b319 SF |
2077 | cERROR(1, ("Negotiating Unix capabilities " |
2078 | "with the server failed. Consider " | |
2079 | "mounting with the Unix Extensions\n" | |
2080 | "disabled, if problems are found, " | |
2081 | "by specifying the nounix mount " | |
2224f4e5 | 2082 | "option.")); |
5a44b319 | 2083 | |
8af18971 SF |
2084 | } |
2085 | } | |
2086 | } | |
2087 | ||
03a143c9 SF |
2088 | static void |
2089 | convert_delimiter(char *path, char delim) | |
2090 | { | |
2091 | int i; | |
c2d68ea6 | 2092 | char old_delim; |
03a143c9 SF |
2093 | |
2094 | if (path == NULL) | |
2095 | return; | |
2096 | ||
582d21e5 | 2097 | if (delim == '/') |
c2d68ea6 SF |
2098 | old_delim = '\\'; |
2099 | else | |
2100 | old_delim = '/'; | |
2101 | ||
03a143c9 | 2102 | for (i = 0; path[i] != '\0'; i++) { |
c2d68ea6 | 2103 | if (path[i] == old_delim) |
03a143c9 SF |
2104 | path[i] = delim; |
2105 | } | |
2106 | } | |
2107 | ||
3b795210 SF |
2108 | static void setup_cifs_sb(struct smb_vol *pvolume_info, |
2109 | struct cifs_sb_info *cifs_sb) | |
b1c8d2b4 | 2110 | { |
3b795210 SF |
2111 | if (pvolume_info->rsize > CIFSMaxBufSize) { |
2112 | cERROR(1, ("rsize %d too large, using MaxBufSize", | |
2113 | pvolume_info->rsize)); | |
2114 | cifs_sb->rsize = CIFSMaxBufSize; | |
2115 | } else if ((pvolume_info->rsize) && | |
2116 | (pvolume_info->rsize <= CIFSMaxBufSize)) | |
2117 | cifs_sb->rsize = pvolume_info->rsize; | |
2118 | else /* default */ | |
2119 | cifs_sb->rsize = CIFSMaxBufSize; | |
2120 | ||
2121 | if (pvolume_info->wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { | |
2122 | cERROR(1, ("wsize %d too large, using 4096 instead", | |
2123 | pvolume_info->wsize)); | |
2124 | cifs_sb->wsize = 4096; | |
2125 | } else if (pvolume_info->wsize) | |
2126 | cifs_sb->wsize = pvolume_info->wsize; | |
2127 | else | |
2128 | cifs_sb->wsize = min_t(const int, | |
2129 | PAGEVEC_SIZE * PAGE_CACHE_SIZE, | |
2130 | 127*1024); | |
2131 | /* old default of CIFSMaxBufSize was too small now | |
2132 | that SMB Write2 can send multiple pages in kvec. | |
2133 | RFC1001 does not describe what happens when frame | |
2134 | bigger than 128K is sent so use that as max in | |
2135 | conjunction with 52K kvec constraint on arch with 4K | |
2136 | page size */ | |
2137 | ||
2138 | if (cifs_sb->rsize < 2048) { | |
2139 | cifs_sb->rsize = 2048; | |
2140 | /* Windows ME may prefer this */ | |
2141 | cFYI(1, ("readsize set to minimum: 2048")); | |
2142 | } | |
2143 | /* calculate prepath */ | |
2144 | cifs_sb->prepath = pvolume_info->prepath; | |
2145 | if (cifs_sb->prepath) { | |
2146 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); | |
2147 | /* we can not convert the / to \ in the path | |
2148 | separators in the prefixpath yet because we do not | |
2149 | know (until reset_cifs_unix_caps is called later) | |
2150 | whether POSIX PATH CAP is available. We normalize | |
2151 | the / to \ after reset_cifs_unix_caps is called */ | |
2152 | pvolume_info->prepath = NULL; | |
2153 | } else | |
2154 | cifs_sb->prepathlen = 0; | |
2155 | cifs_sb->mnt_uid = pvolume_info->linux_uid; | |
2156 | cifs_sb->mnt_gid = pvolume_info->linux_gid; | |
2157 | cifs_sb->mnt_file_mode = pvolume_info->file_mode; | |
2158 | cifs_sb->mnt_dir_mode = pvolume_info->dir_mode; | |
2159 | cFYI(1, ("file mode: 0x%x dir mode: 0x%x", | |
2160 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode)); | |
2161 | ||
2162 | if (pvolume_info->noperm) | |
2163 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; | |
2164 | if (pvolume_info->setuids) | |
2165 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; | |
2166 | if (pvolume_info->server_ino) | |
2167 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; | |
2168 | if (pvolume_info->remap) | |
2169 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; | |
2170 | if (pvolume_info->no_xattr) | |
2171 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; | |
2172 | if (pvolume_info->sfu_emul) | |
2173 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; | |
2174 | if (pvolume_info->nobrl) | |
2175 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; | |
be652445 | 2176 | if (pvolume_info->nostrictsync) |
4717bed6 | 2177 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOSSYNC; |
13a6e42a SF |
2178 | if (pvolume_info->mand_lock) |
2179 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOPOSIXBRL; | |
3b795210 SF |
2180 | if (pvolume_info->cifs_acl) |
2181 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; | |
2182 | if (pvolume_info->override_uid) | |
2183 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; | |
2184 | if (pvolume_info->override_gid) | |
2185 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; | |
2186 | if (pvolume_info->dynperm) | |
2187 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM; | |
2188 | if (pvolume_info->direct_io) { | |
2189 | cFYI(1, ("mounting share using direct i/o")); | |
2190 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; | |
2191 | } | |
2192 | ||
2193 | if ((pvolume_info->cifs_acl) && (pvolume_info->dynperm)) | |
2194 | cERROR(1, ("mount option dynperm ignored if cifsacl " | |
2195 | "mount option supported")); | |
b1c8d2b4 JL |
2196 | } |
2197 | ||
e4cce94c IM |
2198 | static int |
2199 | is_path_accessible(int xid, struct cifsTconInfo *tcon, | |
2200 | struct cifs_sb_info *cifs_sb, const char *full_path) | |
2201 | { | |
2202 | int rc; | |
2203 | __u64 inode_num; | |
2204 | FILE_ALL_INFO *pfile_info; | |
2205 | ||
2206 | rc = CIFSGetSrvInodeNumber(xid, tcon, full_path, &inode_num, | |
2207 | cifs_sb->local_nls, | |
2208 | cifs_sb->mnt_cifs_flags & | |
2209 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
2210 | if (rc != -EOPNOTSUPP) | |
2211 | return rc; | |
2212 | ||
2213 | pfile_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); | |
2214 | if (pfile_info == NULL) | |
2215 | return -ENOMEM; | |
2216 | ||
2217 | rc = CIFSSMBQPathInfo(xid, tcon, full_path, pfile_info, | |
2218 | 0 /* not legacy */, cifs_sb->local_nls, | |
2219 | cifs_sb->mnt_cifs_flags & | |
2220 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
2221 | kfree(pfile_info); | |
2222 | return rc; | |
2223 | } | |
2224 | ||
1bfe73c2 IM |
2225 | static void |
2226 | cleanup_volume_info(struct smb_vol **pvolume_info) | |
2227 | { | |
2228 | struct smb_vol *volume_info; | |
2229 | ||
2230 | if (!pvolume_info && !*pvolume_info) | |
2231 | return; | |
2232 | ||
2233 | volume_info = *pvolume_info; | |
2234 | kzfree(volume_info->password); | |
2235 | kfree(volume_info->UNC); | |
2236 | kfree(volume_info->prepath); | |
2237 | kfree(volume_info); | |
2238 | *pvolume_info = NULL; | |
2239 | return; | |
2240 | } | |
2241 | ||
2d6d589d | 2242 | #ifdef CONFIG_CIFS_DFS_UPCALL |
1bfe73c2 IM |
2243 | /* build_path_to_root returns full path to root when |
2244 | * we do not have an exiting connection (tcon) */ | |
2245 | static char * | |
2246 | build_unc_path_to_root(const struct smb_vol *volume_info, | |
2247 | const struct cifs_sb_info *cifs_sb) | |
2248 | { | |
2249 | char *full_path; | |
2250 | ||
2251 | int unc_len = strnlen(volume_info->UNC, MAX_TREE_SIZE + 1); | |
2252 | full_path = kmalloc(unc_len + cifs_sb->prepathlen + 1, GFP_KERNEL); | |
2253 | if (full_path == NULL) | |
2254 | return ERR_PTR(-ENOMEM); | |
2255 | ||
2256 | strncpy(full_path, volume_info->UNC, unc_len); | |
2257 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) { | |
2258 | int i; | |
2259 | for (i = 0; i < unc_len; i++) { | |
2260 | if (full_path[i] == '\\') | |
2261 | full_path[i] = '/'; | |
2262 | } | |
2263 | } | |
2264 | ||
2265 | if (cifs_sb->prepathlen) | |
2266 | strncpy(full_path + unc_len, cifs_sb->prepath, | |
2267 | cifs_sb->prepathlen); | |
2268 | ||
2269 | full_path[unc_len + cifs_sb->prepathlen] = 0; /* add trailing null */ | |
2270 | return full_path; | |
2271 | } | |
2d6d589d | 2272 | #endif |
1bfe73c2 | 2273 | |
1da177e4 LT |
2274 | int |
2275 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1bfe73c2 | 2276 | char *mount_data_global, const char *devname) |
1da177e4 LT |
2277 | { |
2278 | int rc = 0; | |
2279 | int xid; | |
7586b765 | 2280 | struct smb_vol *volume_info; |
1da177e4 | 2281 | struct cifsSesInfo *pSesInfo = NULL; |
1da177e4 LT |
2282 | struct cifsTconInfo *tcon = NULL; |
2283 | struct TCP_Server_Info *srvTcp = NULL; | |
e4cce94c | 2284 | char *full_path; |
2d6d589d SF |
2285 | char *mount_data = mount_data_global; |
2286 | #ifdef CONFIG_CIFS_DFS_UPCALL | |
1bfe73c2 IM |
2287 | struct dfs_info3_param *referrals = NULL; |
2288 | unsigned int num_referrals = 0; | |
5c2503a8 | 2289 | int referral_walks_count = 0; |
1bfe73c2 | 2290 | try_mount_again: |
2d6d589d | 2291 | #endif |
1bfe73c2 | 2292 | full_path = NULL; |
1da177e4 LT |
2293 | |
2294 | xid = GetXid(); | |
2295 | ||
7586b765 JL |
2296 | volume_info = kzalloc(sizeof(struct smb_vol), GFP_KERNEL); |
2297 | if (!volume_info) { | |
2298 | rc = -ENOMEM; | |
2299 | goto out; | |
2300 | } | |
50c2f753 | 2301 | |
7586b765 | 2302 | if (cifs_parse_mount_options(mount_data, devname, volume_info)) { |
70fe7dc0 JL |
2303 | rc = -EINVAL; |
2304 | goto out; | |
1da177e4 LT |
2305 | } |
2306 | ||
7586b765 | 2307 | if (volume_info->nullauth) { |
fb8c4b14 | 2308 | cFYI(1, ("null user")); |
7586b765 JL |
2309 | volume_info->username = ""; |
2310 | } else if (volume_info->username) { | |
1da177e4 | 2311 | /* BB fixme parse for domain name here */ |
7586b765 | 2312 | cFYI(1, ("Username: %s", volume_info->username)); |
1da177e4 | 2313 | } else { |
bf820679 | 2314 | cifserror("No username specified"); |
50c2f753 SF |
2315 | /* In userspace mount helper we can get user name from alternate |
2316 | locations such as env variables and files on disk */ | |
70fe7dc0 JL |
2317 | rc = -EINVAL; |
2318 | goto out; | |
1da177e4 LT |
2319 | } |
2320 | ||
1da177e4 LT |
2321 | |
2322 | /* this is needed for ASCII cp to Unicode converts */ | |
7586b765 | 2323 | if (volume_info->iocharset == NULL) { |
1da177e4 LT |
2324 | cifs_sb->local_nls = load_nls_default(); |
2325 | /* load_nls_default can not return null */ | |
2326 | } else { | |
7586b765 | 2327 | cifs_sb->local_nls = load_nls(volume_info->iocharset); |
fb8c4b14 | 2328 | if (cifs_sb->local_nls == NULL) { |
50c2f753 | 2329 | cERROR(1, ("CIFS mount error: iocharset %s not found", |
7586b765 | 2330 | volume_info->iocharset)); |
70fe7dc0 JL |
2331 | rc = -ELIBACC; |
2332 | goto out; | |
1da177e4 LT |
2333 | } |
2334 | } | |
2335 | ||
63c038c2 | 2336 | /* get a reference to a tcp session */ |
7586b765 | 2337 | srvTcp = cifs_get_tcp_session(volume_info); |
63c038c2 JL |
2338 | if (IS_ERR(srvTcp)) { |
2339 | rc = PTR_ERR(srvTcp); | |
2340 | goto out; | |
1da177e4 LT |
2341 | } |
2342 | ||
7586b765 | 2343 | pSesInfo = cifs_find_smb_ses(srvTcp, volume_info->username); |
14fbf50d | 2344 | if (pSesInfo) { |
1d9a8852 JL |
2345 | cFYI(1, ("Existing smb sess found (status=%d)", |
2346 | pSesInfo->status)); | |
14fbf50d JL |
2347 | /* |
2348 | * The existing SMB session already has a reference to srvTcp, | |
2349 | * so we can put back the extra one we got before | |
2350 | */ | |
2351 | cifs_put_tcp_session(srvTcp); | |
2352 | ||
88e7d705 | 2353 | down(&pSesInfo->sesSem); |
3b795210 | 2354 | if (pSesInfo->need_reconnect) { |
1d9a8852 | 2355 | cFYI(1, ("Session needs reconnect")); |
1d9a8852 JL |
2356 | rc = cifs_setup_session(xid, pSesInfo, |
2357 | cifs_sb->local_nls); | |
1d9a8852 | 2358 | } |
88e7d705 | 2359 | up(&pSesInfo->sesSem); |
1da177e4 | 2360 | } else if (!rc) { |
bf820679 | 2361 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 | 2362 | pSesInfo = sesInfoAlloc(); |
14fbf50d | 2363 | if (pSesInfo == NULL) { |
1da177e4 | 2364 | rc = -ENOMEM; |
14fbf50d | 2365 | goto mount_fail_check; |
1da177e4 LT |
2366 | } |
2367 | ||
14fbf50d JL |
2368 | /* new SMB session uses our srvTcp ref */ |
2369 | pSesInfo->server = srvTcp; | |
63c038c2 | 2370 | if (srvTcp->addr.sockAddr6.sin6_family == AF_INET6) |
0191b625 LT |
2371 | sprintf(pSesInfo->serverName, "%pI6", |
2372 | &srvTcp->addr.sockAddr6.sin6_addr); | |
8ecaf67a | 2373 | else |
0191b625 LT |
2374 | sprintf(pSesInfo->serverName, "%pI4", |
2375 | &srvTcp->addr.sockAddr.sin_addr.s_addr); | |
14fbf50d JL |
2376 | |
2377 | write_lock(&cifs_tcp_ses_lock); | |
2378 | list_add(&pSesInfo->smb_ses_list, &srvTcp->smb_ses_list); | |
2379 | write_unlock(&cifs_tcp_ses_lock); | |
2380 | ||
7586b765 JL |
2381 | /* volume_info->password freed at unmount */ |
2382 | if (volume_info->password) { | |
00e485b0 JL |
2383 | pSesInfo->password = kstrdup(volume_info->password, |
2384 | GFP_KERNEL); | |
2385 | if (!pSesInfo->password) { | |
2386 | rc = -ENOMEM; | |
2387 | goto mount_fail_check; | |
2388 | } | |
14fbf50d | 2389 | } |
7586b765 JL |
2390 | if (volume_info->username) |
2391 | strncpy(pSesInfo->userName, volume_info->username, | |
14fbf50d | 2392 | MAX_USERNAME_SIZE); |
7586b765 JL |
2393 | if (volume_info->domainname) { |
2394 | int len = strlen(volume_info->domainname); | |
14fbf50d JL |
2395 | pSesInfo->domainName = kmalloc(len + 1, GFP_KERNEL); |
2396 | if (pSesInfo->domainName) | |
2397 | strcpy(pSesInfo->domainName, | |
7586b765 | 2398 | volume_info->domainname); |
70fe7dc0 | 2399 | } |
7586b765 JL |
2400 | pSesInfo->linux_uid = volume_info->linux_uid; |
2401 | pSesInfo->overrideSecFlg = volume_info->secFlg; | |
14fbf50d | 2402 | down(&pSesInfo->sesSem); |
1da177e4 | 2403 | |
14fbf50d JL |
2404 | /* BB FIXME need to pass vol->secFlgs BB */ |
2405 | rc = cifs_setup_session(xid, pSesInfo, | |
2406 | cifs_sb->local_nls); | |
2407 | up(&pSesInfo->sesSem); | |
1da177e4 | 2408 | } |
50c2f753 | 2409 | |
1da177e4 LT |
2410 | /* search for existing tcon to this server share */ |
2411 | if (!rc) { | |
7586b765 | 2412 | setup_cifs_sb(volume_info, cifs_sb); |
1da177e4 | 2413 | |
7586b765 | 2414 | tcon = cifs_find_tcon(pSesInfo, volume_info->UNC); |
1da177e4 | 2415 | if (tcon) { |
bf820679 | 2416 | cFYI(1, ("Found match on UNC path")); |
f1987b44 JL |
2417 | /* existing tcon already has a reference */ |
2418 | cifs_put_smb_ses(pSesInfo); | |
7586b765 | 2419 | if (tcon->seal != volume_info->seal) |
95b1cb90 SF |
2420 | cERROR(1, ("transport encryption setting " |
2421 | "conflicts with existing tid")); | |
1da177e4 LT |
2422 | } else { |
2423 | tcon = tconInfoAlloc(); | |
3b795210 | 2424 | if (tcon == NULL) { |
1da177e4 | 2425 | rc = -ENOMEM; |
3b795210 SF |
2426 | goto mount_fail_check; |
2427 | } | |
00e485b0 | 2428 | |
ab3f9929 | 2429 | tcon->ses = pSesInfo; |
00e485b0 JL |
2430 | if (volume_info->password) { |
2431 | tcon->password = kstrdup(volume_info->password, | |
2432 | GFP_KERNEL); | |
2433 | if (!tcon->password) { | |
2434 | rc = -ENOMEM; | |
2435 | goto mount_fail_check; | |
2436 | } | |
2437 | } | |
3b795210 | 2438 | |
7586b765 JL |
2439 | if ((strchr(volume_info->UNC + 3, '\\') == NULL) |
2440 | && (strchr(volume_info->UNC + 3, '/') == NULL)) { | |
1bfe73c2 | 2441 | cERROR(1, ("Missing share name")); |
3b795210 SF |
2442 | rc = -ENODEV; |
2443 | goto mount_fail_check; | |
2444 | } else { | |
2445 | /* BB Do we need to wrap sesSem around | |
2446 | * this TCon call and Unix SetFS as | |
2447 | * we do on SessSetup and reconnect? */ | |
7586b765 | 2448 | rc = CIFSTCon(xid, pSesInfo, volume_info->UNC, |
3b795210 SF |
2449 | tcon, cifs_sb->local_nls); |
2450 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
7586b765 | 2451 | if (volume_info->nodfs) { |
3b795210 SF |
2452 | tcon->Flags &= ~SMB_SHARE_IS_IN_DFS; |
2453 | cFYI(1, ("DFS disabled (%d)", | |
2454 | tcon->Flags)); | |
1da177e4 LT |
2455 | } |
2456 | } | |
14fbf50d | 2457 | if (rc) |
1bfe73c2 | 2458 | goto remote_path_check; |
7586b765 | 2459 | tcon->seal = volume_info->seal; |
f1987b44 JL |
2460 | write_lock(&cifs_tcp_ses_lock); |
2461 | list_add(&tcon->tcon_list, &pSesInfo->tcon_list); | |
2462 | write_unlock(&cifs_tcp_ses_lock); | |
1da177e4 | 2463 | } |
3b795210 SF |
2464 | |
2465 | /* we can have only one retry value for a connection | |
2466 | to a share so for resources mounted more than once | |
2467 | to the same server share the last value passed in | |
2468 | for the retry flag is used */ | |
7586b765 JL |
2469 | tcon->retry = volume_info->retry; |
2470 | tcon->nocase = volume_info->nocase; | |
2471 | tcon->local_lease = volume_info->local_lease; | |
1da177e4 | 2472 | } |
4523cc30 | 2473 | if (pSesInfo) { |
1da177e4 LT |
2474 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
2475 | sb->s_maxbytes = (u64) 1 << 63; | |
2476 | } else | |
2477 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
2478 | } | |
2479 | ||
8af18971 | 2480 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
1da177e4 LT |
2481 | sb->s_time_gran = 100; |
2482 | ||
1bfe73c2 IM |
2483 | if (rc) |
2484 | goto remote_path_check; | |
2485 | ||
d82c2df5 | 2486 | cifs_sb->tcon = tcon; |
c18c842b | 2487 | |
d82c2df5 SF |
2488 | /* do not care if following two calls succeed - informational */ |
2489 | if (!tcon->ipc) { | |
2490 | CIFSSMBQFSDeviceInfo(xid, tcon); | |
2491 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
2492 | } | |
03a143c9 | 2493 | |
d82c2df5 SF |
2494 | /* tell server which Unix caps we support */ |
2495 | if (tcon->ses->capabilities & CAP_UNIX) | |
2496 | /* reset of caps checks mount to see if unix extensions | |
2497 | disabled for just this mount */ | |
7586b765 | 2498 | reset_cifs_unix_caps(xid, tcon, sb, volume_info); |
d82c2df5 SF |
2499 | else |
2500 | tcon->unix_ext = 0; /* server does not support them */ | |
c18c842b | 2501 | |
d82c2df5 SF |
2502 | /* convert forward to back slashes in prepath here if needed */ |
2503 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0) | |
2504 | convert_delimiter(cifs_sb->prepath, CIFS_DIR_SEP(cifs_sb)); | |
03a143c9 | 2505 | |
d82c2df5 SF |
2506 | if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) { |
2507 | cifs_sb->rsize = 1024 * 127; | |
2508 | cFYI(DBG2, ("no very large read support, rsize now 127K")); | |
1da177e4 | 2509 | } |
d82c2df5 SF |
2510 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
2511 | cifs_sb->wsize = min(cifs_sb->wsize, | |
2512 | (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)); | |
2513 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) | |
2514 | cifs_sb->rsize = min(cifs_sb->rsize, | |
2515 | (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)); | |
1da177e4 | 2516 | |
1bfe73c2 IM |
2517 | remote_path_check: |
2518 | /* check if a whole path (including prepath) is not remote */ | |
2519 | if (!rc && cifs_sb->prepathlen && tcon) { | |
e4cce94c IM |
2520 | /* build_path_to_root works only when we have a valid tcon */ |
2521 | full_path = cifs_build_path_to_root(cifs_sb); | |
2522 | if (full_path == NULL) { | |
2523 | rc = -ENOMEM; | |
2524 | goto mount_fail_check; | |
2525 | } | |
2526 | rc = is_path_accessible(xid, tcon, cifs_sb, full_path); | |
1bfe73c2 | 2527 | if (rc != -EREMOTE) { |
e4cce94c IM |
2528 | kfree(full_path); |
2529 | goto mount_fail_check; | |
2530 | } | |
2531 | kfree(full_path); | |
2532 | } | |
2533 | ||
1bfe73c2 IM |
2534 | /* get referral if needed */ |
2535 | if (rc == -EREMOTE) { | |
d036f50f | 2536 | #ifdef CONFIG_CIFS_DFS_UPCALL |
5c2503a8 IM |
2537 | if (referral_walks_count > MAX_NESTED_LINKS) { |
2538 | /* | |
2539 | * BB: when we implement proper loop detection, | |
2540 | * we will remove this check. But now we need it | |
2541 | * to prevent an indefinite loop if 'DFS tree' is | |
2542 | * misconfigured (i.e. has loops). | |
2543 | */ | |
2544 | rc = -ELOOP; | |
2545 | goto mount_fail_check; | |
2546 | } | |
1bfe73c2 IM |
2547 | /* convert forward to back slashes in prepath here if needed */ |
2548 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0) | |
2549 | convert_delimiter(cifs_sb->prepath, | |
2550 | CIFS_DIR_SEP(cifs_sb)); | |
2551 | full_path = build_unc_path_to_root(volume_info, cifs_sb); | |
2552 | if (IS_ERR(full_path)) { | |
2553 | rc = PTR_ERR(full_path); | |
2554 | goto mount_fail_check; | |
2555 | } | |
2556 | ||
2557 | cFYI(1, ("Getting referral for: %s", full_path)); | |
2558 | rc = get_dfs_path(xid, pSesInfo , full_path + 1, | |
2559 | cifs_sb->local_nls, &num_referrals, &referrals, | |
2560 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); | |
2561 | if (!rc && num_referrals > 0) { | |
2562 | char *fake_devname = NULL; | |
2563 | ||
2564 | if (mount_data != mount_data_global) | |
2565 | kfree(mount_data); | |
2566 | mount_data = cifs_compose_mount_options( | |
2567 | cifs_sb->mountdata, full_path + 1, | |
2568 | referrals, &fake_devname); | |
2569 | kfree(fake_devname); | |
2570 | free_dfs_info_array(referrals, num_referrals); | |
2571 | ||
2572 | if (tcon) | |
2573 | cifs_put_tcon(tcon); | |
2574 | else if (pSesInfo) | |
2575 | cifs_put_smb_ses(pSesInfo); | |
2576 | ||
2577 | cleanup_volume_info(&volume_info); | |
2578 | FreeXid(xid); | |
2579 | kfree(full_path); | |
5c2503a8 | 2580 | referral_walks_count++; |
1bfe73c2 IM |
2581 | goto try_mount_again; |
2582 | } | |
d036f50f SF |
2583 | #else /* No DFS support, return error on mount */ |
2584 | rc = -EOPNOTSUPP; | |
2585 | #endif | |
1bfe73c2 IM |
2586 | } |
2587 | ||
2588 | mount_fail_check: | |
2589 | /* on error free sesinfo and tcon struct if needed */ | |
2590 | if (rc) { | |
2591 | if (mount_data != mount_data_global) | |
2592 | kfree(mount_data); | |
2593 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
2594 | /* up accidently freeing someone elses tcon struct */ | |
2595 | if (tcon) | |
2596 | cifs_put_tcon(tcon); | |
2597 | else if (pSesInfo) | |
2598 | cifs_put_smb_ses(pSesInfo); | |
2599 | else | |
2600 | cifs_put_tcp_session(srvTcp); | |
2601 | goto out; | |
2602 | } | |
2603 | ||
7586b765 | 2604 | /* volume_info->password is freed above when existing session found |
1da177e4 LT |
2605 | (in which case it is not needed anymore) but when new sesion is created |
2606 | the password ptr is put in the new session structure (in which case the | |
2607 | password will be freed at unmount time) */ | |
70fe7dc0 JL |
2608 | out: |
2609 | /* zero out password before freeing */ | |
1bfe73c2 | 2610 | cleanup_volume_info(&volume_info); |
1da177e4 LT |
2611 | FreeXid(xid); |
2612 | return rc; | |
2613 | } | |
2614 | ||
1da177e4 LT |
2615 | int |
2616 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
2617 | const char *tree, struct cifsTconInfo *tcon, | |
2618 | const struct nls_table *nls_codepage) | |
2619 | { | |
2620 | struct smb_hdr *smb_buffer; | |
2621 | struct smb_hdr *smb_buffer_response; | |
2622 | TCONX_REQ *pSMB; | |
2623 | TCONX_RSP *pSMBr; | |
2624 | unsigned char *bcc_ptr; | |
2625 | int rc = 0; | |
cc20c031 | 2626 | int length, bytes_left; |
1da177e4 LT |
2627 | __u16 count; |
2628 | ||
2629 | if (ses == NULL) | |
2630 | return -EIO; | |
2631 | ||
2632 | smb_buffer = cifs_buf_get(); | |
2633 | if (smb_buffer == NULL) { | |
2634 | return -ENOMEM; | |
2635 | } | |
2636 | smb_buffer_response = smb_buffer; | |
2637 | ||
2638 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
2639 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
2640 | |
2641 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2642 | smb_buffer->Uid = ses->Suid; |
2643 | pSMB = (TCONX_REQ *) smb_buffer; | |
2644 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
2645 | ||
2646 | pSMB->AndXCommand = 0xFF; | |
2647 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 2648 | bcc_ptr = &pSMB->Password[0]; |
fb8c4b14 | 2649 | if ((ses->server->secMode) & SECMODE_USER) { |
eeac8047 | 2650 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
7c7b25bc | 2651 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 2652 | bcc_ptr++; /* skip password */ |
7c7b25bc | 2653 | /* already aligned so no need to do it below */ |
eeac8047 | 2654 | } else { |
7c7b25bc | 2655 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
2656 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
2657 | specified as required (when that support is added to | |
2658 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 2659 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
2660 | by Samba (not sure whether other servers allow |
2661 | NTLMv2 password here) */ | |
7c7b25bc | 2662 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
50c2f753 | 2663 | if ((extended_security & CIFSSEC_MAY_LANMAN) && |
00e485b0 JL |
2664 | (ses->server->secType == LANMAN)) |
2665 | calc_lanman_hash(tcon->password, ses->server->cryptKey, | |
4e53a3fb JL |
2666 | ses->server->secMode & |
2667 | SECMODE_PW_ENCRYPT ? true : false, | |
2668 | bcc_ptr); | |
7c7b25bc SF |
2669 | else |
2670 | #endif /* CIFS_WEAK_PW_HASH */ | |
00e485b0 | 2671 | SMBNTencrypt(tcon->password, ses->server->cryptKey, |
eeac8047 SF |
2672 | bcc_ptr); |
2673 | ||
7c7b25bc | 2674 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
fb8c4b14 | 2675 | if (ses->capabilities & CAP_UNICODE) { |
7c7b25bc SF |
2676 | /* must align unicode strings */ |
2677 | *bcc_ptr = 0; /* null byte password */ | |
2678 | bcc_ptr++; | |
2679 | } | |
eeac8047 | 2680 | } |
1da177e4 | 2681 | |
50c2f753 | 2682 | if (ses->server->secMode & |
a878fb22 | 2683 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2684 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2685 | ||
2686 | if (ses->capabilities & CAP_STATUS32) { | |
2687 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2688 | } | |
2689 | if (ses->capabilities & CAP_DFS) { | |
2690 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2691 | } | |
2692 | if (ses->capabilities & CAP_UNICODE) { | |
2693 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2694 | length = | |
50c2f753 SF |
2695 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
2696 | 6 /* max utf8 char length in bytes */ * | |
a878fb22 SF |
2697 | (/* server len*/ + 256 /* share len */), nls_codepage); |
2698 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
2699 | bcc_ptr += 2; /* skip trailing null */ |
2700 | } else { /* ASCII */ | |
1da177e4 LT |
2701 | strcpy(bcc_ptr, tree); |
2702 | bcc_ptr += strlen(tree) + 1; | |
2703 | } | |
2704 | strcpy(bcc_ptr, "?????"); | |
2705 | bcc_ptr += strlen("?????"); | |
2706 | bcc_ptr += 1; | |
2707 | count = bcc_ptr - &pSMB->Password[0]; | |
2708 | pSMB->hdr.smb_buf_length += count; | |
2709 | pSMB->ByteCount = cpu_to_le16(count); | |
2710 | ||
133672ef SF |
2711 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, |
2712 | CIFS_STD_OP); | |
1da177e4 | 2713 | |
1da177e4 LT |
2714 | /* above now done in SendReceive */ |
2715 | if ((rc == 0) && (tcon != NULL)) { | |
0e0d2cf3 SF |
2716 | bool is_unicode; |
2717 | ||
1da177e4 | 2718 | tcon->tidStatus = CifsGood; |
3b795210 | 2719 | tcon->need_reconnect = false; |
1da177e4 LT |
2720 | tcon->tid = smb_buffer_response->Tid; |
2721 | bcc_ptr = pByteArea(smb_buffer_response); | |
cc20c031 JL |
2722 | bytes_left = BCC(smb_buffer_response); |
2723 | length = strnlen(bcc_ptr, bytes_left - 2); | |
0e0d2cf3 SF |
2724 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) |
2725 | is_unicode = true; | |
2726 | else | |
2727 | is_unicode = false; | |
2728 | ||
cc20c031 | 2729 | |
50c2f753 | 2730 | /* skip service field (NB: this field is always ASCII) */ |
7f8ed420 SF |
2731 | if (length == 3) { |
2732 | if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') && | |
2733 | (bcc_ptr[2] == 'C')) { | |
2734 | cFYI(1, ("IPC connection")); | |
2735 | tcon->ipc = 1; | |
2736 | } | |
2737 | } else if (length == 2) { | |
2738 | if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) { | |
2739 | /* the most common case */ | |
2740 | cFYI(1, ("disk share connection")); | |
2741 | } | |
2742 | } | |
50c2f753 | 2743 | bcc_ptr += length + 1; |
cc20c031 | 2744 | bytes_left -= (length + 1); |
1da177e4 | 2745 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
cc20c031 JL |
2746 | |
2747 | /* mostly informational -- no need to fail on error here */ | |
d185cda7 | 2748 | tcon->nativeFileSystem = cifs_strndup_from_ucs(bcc_ptr, |
0e0d2cf3 | 2749 | bytes_left, is_unicode, |
cc20c031 JL |
2750 | nls_codepage); |
2751 | ||
2752 | cFYI(1, ("nativeFileSystem=%s", tcon->nativeFileSystem)); | |
2753 | ||
fb8c4b14 | 2754 | if ((smb_buffer_response->WordCount == 3) || |
1a4e15a0 SF |
2755 | (smb_buffer_response->WordCount == 7)) |
2756 | /* field is in same location */ | |
3979877e SF |
2757 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
2758 | else | |
2759 | tcon->Flags = 0; | |
1da177e4 LT |
2760 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
2761 | } else if ((rc == 0) && tcon == NULL) { | |
50c2f753 | 2762 | /* all we need to save for IPC$ connection */ |
1da177e4 LT |
2763 | ses->ipc_tid = smb_buffer_response->Tid; |
2764 | } | |
2765 | ||
a8a11d39 | 2766 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2767 | return rc; |
2768 | } | |
2769 | ||
2770 | int | |
2771 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
2772 | { | |
2773 | int rc = 0; | |
50c2f753 | 2774 | char *tmp; |
1da177e4 | 2775 | |
f1987b44 JL |
2776 | if (cifs_sb->tcon) |
2777 | cifs_put_tcon(cifs_sb->tcon); | |
50c2f753 | 2778 | |
1da177e4 | 2779 | cifs_sb->tcon = NULL; |
2fe87f02 SF |
2780 | tmp = cifs_sb->prepath; |
2781 | cifs_sb->prepathlen = 0; | |
2782 | cifs_sb->prepath = NULL; | |
2783 | kfree(tmp); | |
1da177e4 | 2784 | |
88e7d705 | 2785 | return rc; |
50c2f753 | 2786 | } |
1da177e4 LT |
2787 | |
2788 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
50c2f753 | 2789 | struct nls_table *nls_info) |
1da177e4 LT |
2790 | { |
2791 | int rc = 0; | |
ad009ac9 | 2792 | int first_time = 0; |
cb7691b6 | 2793 | struct TCP_Server_Info *server = pSesInfo->server; |
1da177e4 LT |
2794 | |
2795 | /* what if server changes its buffer size after dropping the session? */ | |
cb7691b6 | 2796 | if (server->maxBuf == 0) /* no need to send on reconnect */ { |
1da177e4 | 2797 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
cb7691b6 JL |
2798 | if (rc == -EAGAIN) { |
2799 | /* retry only once on 1st time connection */ | |
1da177e4 | 2800 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
50c2f753 | 2801 | if (rc == -EAGAIN) |
1da177e4 LT |
2802 | rc = -EHOSTDOWN; |
2803 | } | |
fb8c4b14 | 2804 | if (rc == 0) { |
1da177e4 | 2805 | spin_lock(&GlobalMid_Lock); |
cb7691b6 JL |
2806 | if (server->tcpStatus != CifsExiting) |
2807 | server->tcpStatus = CifsGood; | |
1da177e4 LT |
2808 | else |
2809 | rc = -EHOSTDOWN; | |
2810 | spin_unlock(&GlobalMid_Lock); | |
2811 | ||
2812 | } | |
ad009ac9 | 2813 | first_time = 1; |
1da177e4 | 2814 | } |
26b994fa SF |
2815 | |
2816 | if (rc) | |
2817 | goto ss_err_exit; | |
2818 | ||
2819 | pSesInfo->flags = 0; | |
cb7691b6 | 2820 | pSesInfo->capabilities = server->capabilities; |
26b994fa SF |
2821 | if (linuxExtEnabled == 0) |
2822 | pSesInfo->capabilities &= (~CAP_UNIX); | |
20418acd | 2823 | |
26b994fa | 2824 | cFYI(1, ("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", |
cb7691b6 JL |
2825 | server->secMode, server->capabilities, server->timeAdj)); |
2826 | ||
20418acd | 2827 | rc = CIFS_SessSetup(xid, pSesInfo, first_time, nls_info); |
26b994fa SF |
2828 | if (rc) { |
2829 | cERROR(1, ("Send error in SessSetup = %d", rc)); | |
2830 | } else { | |
2831 | cFYI(1, ("CIFS Session Established successfully")); | |
20418acd SF |
2832 | spin_lock(&GlobalMid_Lock); |
2833 | pSesInfo->status = CifsGood; | |
2834 | pSesInfo->need_reconnect = false; | |
2835 | spin_unlock(&GlobalMid_Lock); | |
1da177e4 | 2836 | } |
26b994fa | 2837 | |
1da177e4 LT |
2838 | ss_err_exit: |
2839 | return rc; | |
2840 | } | |
2841 |