4 * Copyright (C) International Business Machines Corp., 2002,2006
5 * Author(s): Steve French (sfrench@us.ibm.com)
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.
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.
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
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include <linux/net.h>
23 #include <linux/string.h>
24 #include <linux/list.h>
25 #include <linux/wait.h>
26 #include <linux/ipv6.h>
27 #include <linux/pagemap.h>
28 #include <linux/ctype.h>
29 #include <linux/utsname.h>
30 #include <linux/mempool.h>
31 #include <linux/delay.h>
32 #include <linux/completion.h>
33 #include <linux/kthread.h>
34 #include <linux/pagevec.h>
35 #include <linux/freezer.h>
36 #include <asm/uaccess.h>
37 #include <asm/processor.h>
40 #include "cifsproto.h"
41 #include "cifs_unicode.h"
42 #include "cifs_debug.h"
43 #include "cifs_fs_sb.h"
46 #include "rfc1002pdu.h"
50 #define RFC1001_PORT 139
52 static DECLARE_COMPLETION(cifsd_complete);
54 extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8,
57 extern mempool_t *cifs_req_poolp;
65 char *in6_addr; /* ipv6 address as human readable form of in6_addr */
66 char *iocharset; /* local code page for mapping to and from Unicode */
67 char source_rfc1001_name[16]; /* netbios name of client */
68 char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */
79 unsigned no_psx_acl:1; /* set if posix acl support should be disabled */
81 unsigned no_xattr:1; /* set if xattr (EA) support should be disabled*/
82 unsigned server_ino:1; /* use inode numbers from server ie UniqueId */
84 unsigned remap:1; /* set to remap seven reserved chars in filenames */
85 unsigned posix_paths:1; /* unset to not ask for posix pathnames. */
87 unsigned nullauth:1; /* attempt to authenticate with null user */
88 unsigned nocase; /* request case insensitive filenames */
89 unsigned nobrl; /* disable sending byte range locks to srv */
93 unsigned short int port;
97 static int ipv4_connect(struct sockaddr_in *psin_server,
98 struct socket **csocket,
100 char * server_netb_name);
101 static int ipv6_connect(struct sockaddr_in6 *psin_server,
102 struct socket **csocket);
106 * cifs tcp session reconnection
108 * mark tcp session as reconnecting so temporarily locked
109 * mark all smb sessions as reconnecting for tcp session
110 * reconnect tcp session
111 * wake up waiters on reconnection? - (not needed currently)
115 cifs_reconnect(struct TCP_Server_Info *server)
118 struct list_head *tmp;
119 struct cifsSesInfo *ses;
120 struct cifsTconInfo *tcon;
121 struct mid_q_entry * mid_entry;
123 spin_lock(&GlobalMid_Lock);
124 if( kthread_should_stop() ) {
125 /* the demux thread will exit normally
126 next time through the loop */
127 spin_unlock(&GlobalMid_Lock);
130 server->tcpStatus = CifsNeedReconnect;
131 spin_unlock(&GlobalMid_Lock);
134 cFYI(1, ("Reconnecting tcp session"));
136 /* before reconnecting the tcp session, mark the smb session (uid)
137 and the tid bad so they are not used until reconnected */
138 read_lock(&GlobalSMBSeslock);
139 list_for_each(tmp, &GlobalSMBSessionList) {
140 ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
142 if (ses->server == server) {
143 ses->status = CifsNeedReconnect;
147 /* else tcp and smb sessions need reconnection */
149 list_for_each(tmp, &GlobalTreeConnectionList) {
150 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
151 if((tcon) && (tcon->ses) && (tcon->ses->server == server)) {
152 tcon->tidStatus = CifsNeedReconnect;
155 read_unlock(&GlobalSMBSeslock);
156 /* do not want to be sending data on a socket we are freeing */
157 down(&server->tcpSem);
158 if(server->ssocket) {
159 cFYI(1,("State: 0x%x Flags: 0x%lx", server->ssocket->state,
160 server->ssocket->flags));
161 server->ssocket->ops->shutdown(server->ssocket,SEND_SHUTDOWN);
162 cFYI(1,("Post shutdown state: 0x%x Flags: 0x%lx", server->ssocket->state,
163 server->ssocket->flags));
164 sock_release(server->ssocket);
165 server->ssocket = NULL;
168 spin_lock(&GlobalMid_Lock);
169 list_for_each(tmp, &server->pending_mid_q) {
170 mid_entry = list_entry(tmp, struct
174 if(mid_entry->midState == MID_REQUEST_SUBMITTED) {
175 /* Mark other intransit requests as needing
176 retry so we do not immediately mark the
177 session bad again (ie after we reconnect
178 below) as they timeout too */
179 mid_entry->midState = MID_RETRY_NEEDED;
183 spin_unlock(&GlobalMid_Lock);
186 while ( (!kthread_should_stop()) && (server->tcpStatus != CifsGood))
189 if(server->protocolType == IPV6) {
190 rc = ipv6_connect(&server->addr.sockAddr6,&server->ssocket);
192 rc = ipv4_connect(&server->addr.sockAddr,
194 server->workstation_RFC1001_name,
195 server->server_RFC1001_name);
198 cFYI(1,("reconnect error %d",rc));
201 atomic_inc(&tcpSesReconnectCount);
202 spin_lock(&GlobalMid_Lock);
203 if( !kthread_should_stop() )
204 server->tcpStatus = CifsGood;
205 server->sequence_number = 0;
206 spin_unlock(&GlobalMid_Lock);
207 /* atomic_set(&server->inFlight,0);*/
208 wake_up(&server->response_q);
216 0 not a transact2, or all data present
217 >0 transact2 with that much data missing
218 -EINVAL = invalid transact2
221 static int check2ndT2(struct smb_hdr * pSMB, unsigned int maxBufSize)
223 struct smb_t2_rsp * pSMBt;
225 int data_in_this_rsp;
228 if(pSMB->Command != SMB_COM_TRANSACTION2)
231 /* check for plausible wct, bcc and t2 data and parm sizes */
232 /* check for parm and data offset going beyond end of smb */
233 if(pSMB->WordCount != 10) { /* coalesce_t2 depends on this */
234 cFYI(1,("invalid transact2 word count"));
238 pSMBt = (struct smb_t2_rsp *)pSMB;
240 total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount);
241 data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount);
243 remaining = total_data_size - data_in_this_rsp;
247 else if(remaining < 0) {
248 cFYI(1,("total data %d smaller than data in frame %d",
249 total_data_size, data_in_this_rsp));
252 cFYI(1,("missing %d bytes from transact2, check next response",
254 if(total_data_size > maxBufSize) {
255 cERROR(1,("TotalDataSize %d is over maximum buffer %d",
256 total_data_size,maxBufSize));
263 static int coalesce_t2(struct smb_hdr * psecond, struct smb_hdr *pTargetSMB)
265 struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond;
266 struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB;
271 char * data_area_of_target;
272 char * data_area_of_buf2;
275 total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount);
277 if(total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) {
278 cFYI(1,("total data sizes of primary and secondary t2 differ"));
281 total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount);
283 remaining = total_data_size - total_in_buf;
288 if(remaining == 0) /* nothing to do, ignore */
291 total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount);
292 if(remaining < total_in_buf2) {
293 cFYI(1,("transact2 2nd response contains too much data"));
296 /* find end of first SMB data area */
297 data_area_of_target = (char *)&pSMBt->hdr.Protocol +
298 le16_to_cpu(pSMBt->t2_rsp.DataOffset);
299 /* validate target area */
301 data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol +
302 le16_to_cpu(pSMB2->t2_rsp.DataOffset);
304 data_area_of_target += total_in_buf;
306 /* copy second buffer into end of first buffer */
307 memcpy(data_area_of_target,data_area_of_buf2,total_in_buf2);
308 total_in_buf += total_in_buf2;
309 pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf);
310 byte_count = le16_to_cpu(BCC_LE(pTargetSMB));
311 byte_count += total_in_buf2;
312 BCC_LE(pTargetSMB) = cpu_to_le16(byte_count);
314 byte_count = pTargetSMB->smb_buf_length;
315 byte_count += total_in_buf2;
317 /* BB also add check that we are not beyond maximum buffer size */
319 pTargetSMB->smb_buf_length = byte_count;
321 if(remaining == total_in_buf2) {
322 cFYI(1,("found the last secondary response"));
323 return 0; /* we are done */
324 } else /* more responses to go */
330 cifs_demultiplex_thread(struct TCP_Server_Info *server)
333 unsigned int pdu_length, total_read;
334 struct smb_hdr *smb_buffer = NULL;
335 struct smb_hdr *bigbuf = NULL;
336 struct smb_hdr *smallbuf = NULL;
337 struct msghdr smb_msg;
339 struct socket *csocket = server->ssocket;
340 struct list_head *tmp;
341 struct cifsSesInfo *ses;
342 struct task_struct *task_to_wake = NULL;
343 struct mid_q_entry *mid_entry;
345 int isLargeBuf = FALSE;
349 allow_signal(SIGKILL);
350 current->flags |= PF_MEMALLOC;
351 server->tsk = current; /* save process info to wake at shutdown */
352 cFYI(1, ("Demultiplex PID: %d", current->pid));
353 write_lock(&GlobalSMBSeslock);
354 atomic_inc(&tcpSesAllocCount);
355 length = tcpSesAllocCount.counter;
356 write_unlock(&GlobalSMBSeslock);
357 complete(&cifsd_complete);
359 mempool_resize(cifs_req_poolp,
360 length + cifs_min_rcv,
364 while (!kthread_should_stop()) {
367 if (bigbuf == NULL) {
368 bigbuf = cifs_buf_get();
370 cERROR(1, ("No memory for large SMB response"));
372 /* retry will check if exiting */
375 } else if (isLargeBuf) {
376 /* we are reusing a dirty large buf, clear its start */
377 memset(bigbuf, 0, sizeof (struct smb_hdr));
380 if (smallbuf == NULL) {
381 smallbuf = cifs_small_buf_get();
383 cERROR(1, ("No memory for SMB response"));
385 /* retry will check if exiting */
388 /* beginning of smb buffer is cleared in our buf_get */
389 } else /* if existing small buf clear beginning */
390 memset(smallbuf, 0, sizeof (struct smb_hdr));
394 smb_buffer = smallbuf;
395 iov.iov_base = smb_buffer;
397 smb_msg.msg_control = NULL;
398 smb_msg.msg_controllen = 0;
400 kernel_recvmsg(csocket, &smb_msg,
401 &iov, 1, 4, 0 /* BB see socket.h flags */);
403 if ( kthread_should_stop() ) {
405 } else if (server->tcpStatus == CifsNeedReconnect) {
406 cFYI(1, ("Reconnect after server stopped responding"));
407 cifs_reconnect(server);
408 cFYI(1, ("call to reconnect done"));
409 csocket = server->ssocket;
411 } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) {
412 msleep(1); /* minimum sleep to prevent looping
413 allowing socket to clear and app threads to set
414 tcpStatus CifsNeedReconnect if server hung */
416 } else if (length <= 0) {
417 if (server->tcpStatus == CifsNew) {
418 cFYI(1, ("tcp session abend after SMBnegprot"));
419 /* some servers kill the TCP session rather than
420 returning an SMB negprot error, in which
421 case reconnecting here is not going to help,
422 and so simply return error to mount */
425 if (!try_to_freeze() && (length == -EINTR)) {
426 cFYI(1,("cifsd thread killed"));
429 cFYI(1,("Reconnect after unexpected peek error %d",
431 cifs_reconnect(server);
432 csocket = server->ssocket;
433 wake_up(&server->response_q);
435 } else if (length < 4) {
437 ("Frame under four bytes received (%d bytes long)",
439 cifs_reconnect(server);
440 csocket = server->ssocket;
441 wake_up(&server->response_q);
445 /* The right amount was read from socket - 4 bytes */
446 /* so we can now interpret the length field */
448 /* the first byte big endian of the length field,
449 is actually not part of the length but the type
450 with the most common, zero, as regular data */
451 temp = *((char *) smb_buffer);
453 /* Note that FC 1001 length is big endian on the wire,
454 but we convert it here so it is always manipulated
455 as host byte order */
456 pdu_length = ntohl(smb_buffer->smb_buf_length);
457 smb_buffer->smb_buf_length = pdu_length;
459 cFYI(1,("rfc1002 length 0x%x)", pdu_length+4));
461 if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) {
463 } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) {
464 cFYI(1,("Good RFC 1002 session rsp"));
466 } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) {
467 /* we get this from Windows 98 instead of
468 an error on SMB negprot response */
469 cFYI(1,("Negative RFC1002 Session Response Error 0x%x)",
471 if(server->tcpStatus == CifsNew) {
472 /* if nack on negprot (rather than
473 ret of smb negprot error) reconnecting
474 not going to help, ret error to mount */
477 /* give server a second to
478 clean up before reconnect attempt */
480 /* always try 445 first on reconnect
481 since we get NACK on some if we ever
482 connected to port 139 (the NACK is
483 since we do not begin with RFC1001
484 session initialize frame) */
485 server->addr.sockAddr.sin_port =
487 cifs_reconnect(server);
488 csocket = server->ssocket;
489 wake_up(&server->response_q);
492 } else if (temp != (char) 0) {
493 cERROR(1,("Unknown RFC 1002 frame"));
494 cifs_dump_mem(" Received Data: ", (char *)smb_buffer,
496 cifs_reconnect(server);
497 csocket = server->ssocket;
501 /* else we have an SMB response */
502 if((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) ||
503 (pdu_length < sizeof (struct smb_hdr) - 1 - 4)) {
504 cERROR(1, ("Invalid size SMB length %d pdu_length %d",
505 length, pdu_length+4));
506 cifs_reconnect(server);
507 csocket = server->ssocket;
508 wake_up(&server->response_q);
515 if(pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) {
517 memcpy(bigbuf, smallbuf, 4);
521 iov.iov_base = 4 + (char *)smb_buffer;
522 iov.iov_len = pdu_length;
523 for (total_read = 0; total_read < pdu_length;
524 total_read += length) {
525 length = kernel_recvmsg(csocket, &smb_msg, &iov, 1,
526 pdu_length - total_read, 0);
527 if( kthread_should_stop() ||
528 (length == -EINTR)) {
532 } else if (server->tcpStatus == CifsNeedReconnect) {
533 cifs_reconnect(server);
534 csocket = server->ssocket;
535 /* Reconnect wakes up rspns q */
536 /* Now we will reread sock */
539 } else if ((length == -ERESTARTSYS) ||
540 (length == -EAGAIN)) {
541 msleep(1); /* minimum sleep to prevent looping,
542 allowing socket to clear and app
543 threads to set tcpStatus
544 CifsNeedReconnect if server hung*/
546 } else if (length <= 0) {
547 cERROR(1,("Received no data, expecting %d",
548 pdu_length - total_read));
549 cifs_reconnect(server);
550 csocket = server->ssocket;
557 else if(reconnect == 1)
560 length += 4; /* account for rfc1002 hdr */
563 dump_smb(smb_buffer, length);
564 if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) {
565 cifs_dump_mem("Bad SMB: ", smb_buffer, 48);
571 spin_lock(&GlobalMid_Lock);
572 list_for_each(tmp, &server->pending_mid_q) {
573 mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
575 if ((mid_entry->mid == smb_buffer->Mid) &&
576 (mid_entry->midState == MID_REQUEST_SUBMITTED) &&
577 (mid_entry->command == smb_buffer->Command)) {
578 if(check2ndT2(smb_buffer,server->maxBuf) > 0) {
579 /* We have a multipart transact2 resp */
581 if(mid_entry->resp_buf) {
582 /* merge response - fix up 1st*/
583 if(coalesce_t2(smb_buffer,
584 mid_entry->resp_buf)) {
585 mid_entry->multiRsp = 1;
588 /* all parts received */
589 mid_entry->multiEnd = 1;
594 cERROR(1,("1st trans2 resp needs bigbuf"));
595 /* BB maybe we can fix this up, switch
596 to already allocated large buffer? */
598 /* Have first buffer */
599 mid_entry->resp_buf =
601 mid_entry->largeBuf = 1;
607 mid_entry->resp_buf = smb_buffer;
609 mid_entry->largeBuf = 1;
611 mid_entry->largeBuf = 0;
613 task_to_wake = mid_entry->tsk;
614 mid_entry->midState = MID_RESPONSE_RECEIVED;
615 #ifdef CONFIG_CIFS_STATS2
616 mid_entry->when_received = jiffies;
618 /* so we do not time out requests to server
619 which is still responding (since server could
620 be busy but not dead) */
621 server->lstrp = jiffies;
625 spin_unlock(&GlobalMid_Lock);
627 /* Was previous buf put in mpx struct for multi-rsp? */
629 /* smb buffer will be freed by user thread */
635 wake_up_process(task_to_wake);
636 } else if ((is_valid_oplock_break(smb_buffer, server) == FALSE)
637 && (isMultiRsp == FALSE)) {
638 cERROR(1, ("No task to wake, unknown frame rcvd! NumMids %d", midCount.counter));
639 cifs_dump_mem("Received Data is: ",(char *)smb_buffer,
640 sizeof(struct smb_hdr));
641 #ifdef CONFIG_CIFS_DEBUG2
642 cifs_dump_detail(smb_buffer);
643 cifs_dump_mids(server);
644 #endif /* CIFS_DEBUG2 */
647 } /* end while !EXITING */
649 spin_lock(&GlobalMid_Lock);
650 server->tcpStatus = CifsExiting;
652 /* check if we have blocked requests that need to free */
653 /* Note that cifs_max_pending is normally 50, but
654 can be set at module install time to as little as two */
655 if(atomic_read(&server->inFlight) >= cifs_max_pending)
656 atomic_set(&server->inFlight, cifs_max_pending - 1);
657 /* We do not want to set the max_pending too low or we
658 could end up with the counter going negative */
659 spin_unlock(&GlobalMid_Lock);
660 /* Although there should not be any requests blocked on
661 this queue it can not hurt to be paranoid and try to wake up requests
662 that may haven been blocked when more than 50 at time were on the wire
663 to the same server - they now will see the session is in exit state
664 and get out of SendReceive. */
665 wake_up_all(&server->request_q);
666 /* give those requests time to exit */
669 if(server->ssocket) {
670 sock_release(csocket);
671 server->ssocket = NULL;
673 /* buffer usuallly freed in free_mid - need to free it here on exit */
675 cifs_buf_release(bigbuf);
676 if (smallbuf != NULL)
677 cifs_small_buf_release(smallbuf);
679 read_lock(&GlobalSMBSeslock);
680 if (list_empty(&server->pending_mid_q)) {
681 /* loop through server session structures attached to this and
683 list_for_each(tmp, &GlobalSMBSessionList) {
685 list_entry(tmp, struct cifsSesInfo,
687 if (ses->server == server) {
688 ses->status = CifsExiting;
692 read_unlock(&GlobalSMBSeslock);
694 /* although we can not zero the server struct pointer yet,
695 since there are active requests which may depnd on them,
696 mark the corresponding SMB sessions as exiting too */
697 list_for_each(tmp, &GlobalSMBSessionList) {
698 ses = list_entry(tmp, struct cifsSesInfo,
700 if (ses->server == server) {
701 ses->status = CifsExiting;
705 spin_lock(&GlobalMid_Lock);
706 list_for_each(tmp, &server->pending_mid_q) {
707 mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
708 if (mid_entry->midState == MID_REQUEST_SUBMITTED) {
710 ("Clearing Mid 0x%x - waking up ",mid_entry->mid));
711 task_to_wake = mid_entry->tsk;
713 wake_up_process(task_to_wake);
717 spin_unlock(&GlobalMid_Lock);
718 read_unlock(&GlobalSMBSeslock);
719 /* 1/8th of sec is more than enough time for them to exit */
723 if (!list_empty(&server->pending_mid_q)) {
724 /* mpx threads have not exited yet give them
725 at least the smb send timeout time for long ops */
726 /* due to delays on oplock break requests, we need
727 to wait at least 45 seconds before giving up
728 on a request getting a response and going ahead
730 cFYI(1, ("Wait for exit from demultiplex thread"));
732 /* if threads still have not exited they are probably never
733 coming home not much else we can do but free the memory */
736 write_lock(&GlobalSMBSeslock);
737 atomic_dec(&tcpSesAllocCount);
738 length = tcpSesAllocCount.counter;
740 /* last chance to mark ses pointers invalid
741 if there are any pointing to this (e.g
742 if a crazy root user tried to kill cifsd
743 kernel thread explicitly this might happen) */
744 list_for_each(tmp, &GlobalSMBSessionList) {
745 ses = list_entry(tmp, struct cifsSesInfo,
747 if (ses->server == server) {
751 write_unlock(&GlobalSMBSeslock);
755 mempool_resize(cifs_req_poolp,
756 length + cifs_min_rcv,
764 cifs_parse_mount_options(char *options, const char *devname,struct smb_vol *vol)
768 unsigned int temp_len, i, j;
774 if (Local_System_Name[0] != 0)
775 memcpy(vol->source_rfc1001_name, Local_System_Name,15);
777 char *nodename = utsname()->nodename;
778 int n = strnlen(nodename,15);
779 memset(vol->source_rfc1001_name,0x20,15);
780 for(i=0 ; i < n ; i++) {
781 /* does not have to be perfect mapping since field is
782 informational, only used for servers that do not support
783 port 445 and it can be overridden at mount time */
784 vol->source_rfc1001_name[i] = toupper(nodename[i]);
787 vol->source_rfc1001_name[15] = 0;
788 /* null target name indicates to use *SMBSERVR default called name
789 if we end up sending RFC1001 session initialize */
790 vol->target_rfc1001_name[0] = 0;
791 vol->linux_uid = current->uid; /* current->euid instead? */
792 vol->linux_gid = current->gid;
793 vol->dir_mode = S_IRWXUGO;
794 /* 2767 perms indicate mandatory locking support */
795 vol->file_mode = S_IALLUGO & ~(S_ISUID | S_IXGRP);
797 /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */
799 /* default is always to request posix paths. */
800 vol->posix_paths = 1;
805 if(strncmp(options,"sep=",4) == 0) {
806 if(options[4] != 0) {
807 separator[0] = options[4];
810 cFYI(1,("Null separator not allowed"));
814 while ((data = strsep(&options, separator)) != NULL) {
817 if ((value = strchr(data, '=')) != NULL)
820 if (strnicmp(data, "user_xattr",10) == 0) {/*parse before user*/
822 } else if (strnicmp(data, "nouser_xattr",12) == 0) {
824 } else if (strnicmp(data, "user", 4) == 0) {
827 "CIFS: invalid or missing username\n");
828 return 1; /* needs_arg; */
830 /* null user, ie anonymous, authentication */
833 if (strnlen(value, 200) < 200) {
834 vol->username = value;
836 printk(KERN_WARNING "CIFS: username too long\n");
839 } else if (strnicmp(data, "pass", 4) == 0) {
841 vol->password = NULL;
843 } else if(value[0] == 0) {
844 /* check if string begins with double comma
845 since that would mean the password really
846 does start with a comma, and would not
847 indicate an empty string */
848 if(value[1] != separator[0]) {
849 vol->password = NULL;
853 temp_len = strlen(value);
854 /* removed password length check, NTLM passwords
855 can be arbitrarily long */
857 /* if comma in password, the string will be
858 prematurely null terminated. Commas in password are
859 specified across the cifs mount interface by a double
860 comma ie ,, and a comma used as in other cases ie ','
861 as a parameter delimiter/separator is single and due
862 to the strsep above is temporarily zeroed. */
864 /* NB: password legally can have multiple commas and
865 the only illegal character in a password is null */
867 if ((value[temp_len] == 0) &&
868 (value[temp_len+1] == separator[0])) {
870 value[temp_len] = separator[0];
871 temp_len+=2; /* move after the second comma */
872 while(value[temp_len] != 0) {
873 if (value[temp_len] == separator[0]) {
874 if (value[temp_len+1] ==
876 /* skip second comma */
879 /* single comma indicating start
886 if(value[temp_len] == 0) {
890 /* point option to start of next parm */
891 options = value + temp_len + 1;
893 /* go from value to value + temp_len condensing
894 double commas to singles. Note that this ends up
895 allocating a few bytes too many, which is ok */
896 vol->password = kzalloc(temp_len, GFP_KERNEL);
897 if(vol->password == NULL) {
898 printk("CIFS: no memory for pass\n");
901 for(i=0,j=0;i<temp_len;i++,j++) {
902 vol->password[j] = value[i];
903 if(value[i] == separator[0]
904 && value[i+1] == separator[0]) {
905 /* skip second comma */
909 vol->password[j] = 0;
911 vol->password = kzalloc(temp_len+1, GFP_KERNEL);
912 if(vol->password == NULL) {
913 printk("CIFS: no memory for pass\n");
916 strcpy(vol->password, value);
918 } else if (strnicmp(data, "ip", 2) == 0) {
919 if (!value || !*value) {
921 } else if (strnlen(value, 35) < 35) {
924 printk(KERN_WARNING "CIFS: ip address too long\n");
927 } else if (strnicmp(data, "sec", 3) == 0) {
928 if (!value || !*value) {
929 cERROR(1,("no security value specified"));
931 } else if (strnicmp(value, "krb5i", 5) == 0) {
932 vol->secFlg |= CIFSSEC_MAY_KRB5 |
934 } else if (strnicmp(value, "krb5p", 5) == 0) {
935 /* vol->secFlg |= CIFSSEC_MUST_SEAL |
937 cERROR(1,("Krb5 cifs privacy not supported"));
939 } else if (strnicmp(value, "krb5", 4) == 0) {
940 vol->secFlg |= CIFSSEC_MAY_KRB5;
941 } else if (strnicmp(value, "ntlmv2i", 7) == 0) {
942 vol->secFlg |= CIFSSEC_MAY_NTLMV2 |
944 } else if (strnicmp(value, "ntlmv2", 6) == 0) {
945 vol->secFlg |= CIFSSEC_MAY_NTLMV2;
946 } else if (strnicmp(value, "ntlmi", 5) == 0) {
947 vol->secFlg |= CIFSSEC_MAY_NTLM |
949 } else if (strnicmp(value, "ntlm", 4) == 0) {
950 /* ntlm is default so can be turned off too */
951 vol->secFlg |= CIFSSEC_MAY_NTLM;
952 } else if (strnicmp(value, "nontlm", 6) == 0) {
953 /* BB is there a better way to do this? */
954 vol->secFlg |= CIFSSEC_MAY_NTLMV2;
955 #ifdef CONFIG_CIFS_WEAK_PW_HASH
956 } else if (strnicmp(value, "lanman", 6) == 0) {
957 vol->secFlg |= CIFSSEC_MAY_LANMAN;
959 } else if (strnicmp(value, "none", 4) == 0) {
962 cERROR(1,("bad security option: %s", value));
965 } else if ((strnicmp(data, "unc", 3) == 0)
966 || (strnicmp(data, "target", 6) == 0)
967 || (strnicmp(data, "path", 4) == 0)) {
968 if (!value || !*value) {
970 "CIFS: invalid path to network resource\n");
971 return 1; /* needs_arg; */
973 if ((temp_len = strnlen(value, 300)) < 300) {
974 vol->UNC = kmalloc(temp_len+1,GFP_KERNEL);
977 strcpy(vol->UNC,value);
978 if (strncmp(vol->UNC, "//", 2) == 0) {
981 } else if (strncmp(vol->UNC, "\\\\", 2) != 0) {
983 "CIFS: UNC Path does not begin with // or \\\\ \n");
987 printk(KERN_WARNING "CIFS: UNC name too long\n");
990 } else if ((strnicmp(data, "domain", 3) == 0)
991 || (strnicmp(data, "workgroup", 5) == 0)) {
992 if (!value || !*value) {
993 printk(KERN_WARNING "CIFS: invalid domain name\n");
994 return 1; /* needs_arg; */
996 /* BB are there cases in which a comma can be valid in
997 a domain name and need special handling? */
998 if (strnlen(value, 256) < 256) {
999 vol->domainname = value;
1000 cFYI(1, ("Domain name set"));
1002 printk(KERN_WARNING "CIFS: domain name too long\n");
1005 } else if (strnicmp(data, "prefixpath", 10) == 0) {
1006 if (!value || !*value) {
1008 "CIFS: invalid path prefix\n");
1009 return 1; /* needs_arg; */
1011 if ((temp_len = strnlen(value, 1024)) < 1024) {
1013 temp_len++; /* missing leading slash */
1014 vol->prepath = kmalloc(temp_len+1,GFP_KERNEL);
1015 if(vol->prepath == NULL)
1017 if(value[0] != '/') {
1018 vol->prepath[0] = '/';
1019 strcpy(vol->prepath+1,value);
1021 strcpy(vol->prepath,value);
1022 cFYI(1,("prefix path %s",vol->prepath));
1024 printk(KERN_WARNING "CIFS: prefix too long\n");
1027 } else if (strnicmp(data, "iocharset", 9) == 0) {
1028 if (!value || !*value) {
1029 printk(KERN_WARNING "CIFS: invalid iocharset specified\n");
1030 return 1; /* needs_arg; */
1032 if (strnlen(value, 65) < 65) {
1033 if(strnicmp(value,"default",7))
1034 vol->iocharset = value;
1035 /* if iocharset not set load_nls_default used by caller */
1036 cFYI(1, ("iocharset set to %s",value));
1038 printk(KERN_WARNING "CIFS: iocharset name too long.\n");
1041 } else if (strnicmp(data, "uid", 3) == 0) {
1042 if (value && *value) {
1044 simple_strtoul(value, &value, 0);
1046 } else if (strnicmp(data, "gid", 3) == 0) {
1047 if (value && *value) {
1049 simple_strtoul(value, &value, 0);
1051 } else if (strnicmp(data, "file_mode", 4) == 0) {
1052 if (value && *value) {
1054 simple_strtoul(value, &value, 0);
1056 } else if (strnicmp(data, "dir_mode", 4) == 0) {
1057 if (value && *value) {
1059 simple_strtoul(value, &value, 0);
1061 } else if (strnicmp(data, "dirmode", 4) == 0) {
1062 if (value && *value) {
1064 simple_strtoul(value, &value, 0);
1066 } else if (strnicmp(data, "port", 4) == 0) {
1067 if (value && *value) {
1069 simple_strtoul(value, &value, 0);
1071 } else if (strnicmp(data, "rsize", 5) == 0) {
1072 if (value && *value) {
1074 simple_strtoul(value, &value, 0);
1076 } else if (strnicmp(data, "wsize", 5) == 0) {
1077 if (value && *value) {
1079 simple_strtoul(value, &value, 0);
1081 } else if (strnicmp(data, "sockopt", 5) == 0) {
1082 if (value && *value) {
1084 simple_strtoul(value, &value, 0);
1086 } else if (strnicmp(data, "netbiosname", 4) == 0) {
1087 if (!value || !*value || (*value == ' ')) {
1088 cFYI(1,("invalid (empty) netbiosname specified"));
1090 memset(vol->source_rfc1001_name,0x20,15);
1092 /* BB are there cases in which a comma can be
1093 valid in this workstation netbios name (and need
1094 special handling)? */
1096 /* We do not uppercase netbiosname for user */
1100 vol->source_rfc1001_name[i] = value[i];
1102 /* The string has 16th byte zero still from
1103 set at top of the function */
1104 if((i==15) && (value[i] != 0))
1105 printk(KERN_WARNING "CIFS: netbiosname longer than 15 truncated.\n");
1107 } else if (strnicmp(data, "servern", 7) == 0) {
1108 /* servernetbiosname specified override *SMBSERVER */
1109 if (!value || !*value || (*value == ' ')) {
1110 cFYI(1,("empty server netbiosname specified"));
1112 /* last byte, type, is 0x20 for servr type */
1113 memset(vol->target_rfc1001_name,0x20,16);
1116 /* BB are there cases in which a comma can be
1117 valid in this workstation netbios name (and need
1118 special handling)? */
1120 /* user or mount helper must uppercase netbiosname */
1124 vol->target_rfc1001_name[i] = value[i];
1126 /* The string has 16th byte zero still from
1127 set at top of the function */
1128 if((i==15) && (value[i] != 0))
1129 printk(KERN_WARNING "CIFS: server netbiosname longer than 15 truncated.\n");
1131 } else if (strnicmp(data, "credentials", 4) == 0) {
1133 } else if (strnicmp(data, "version", 3) == 0) {
1135 } else if (strnicmp(data, "guest",5) == 0) {
1137 } else if (strnicmp(data, "rw", 2) == 0) {
1139 } else if ((strnicmp(data, "suid", 4) == 0) ||
1140 (strnicmp(data, "nosuid", 6) == 0) ||
1141 (strnicmp(data, "exec", 4) == 0) ||
1142 (strnicmp(data, "noexec", 6) == 0) ||
1143 (strnicmp(data, "nodev", 5) == 0) ||
1144 (strnicmp(data, "noauto", 6) == 0) ||
1145 (strnicmp(data, "dev", 3) == 0)) {
1146 /* The mount tool or mount.cifs helper (if present)
1147 uses these opts to set flags, and the flags are read
1148 by the kernel vfs layer before we get here (ie
1149 before read super) so there is no point trying to
1150 parse these options again and set anything and it
1151 is ok to just ignore them */
1153 } else if (strnicmp(data, "ro", 2) == 0) {
1155 } else if (strnicmp(data, "hard", 4) == 0) {
1157 } else if (strnicmp(data, "soft", 4) == 0) {
1159 } else if (strnicmp(data, "perm", 4) == 0) {
1161 } else if (strnicmp(data, "noperm", 6) == 0) {
1163 } else if (strnicmp(data, "mapchars", 8) == 0) {
1165 } else if (strnicmp(data, "nomapchars", 10) == 0) {
1167 } else if (strnicmp(data, "sfu", 3) == 0) {
1169 } else if (strnicmp(data, "nosfu", 5) == 0) {
1171 } else if (strnicmp(data, "posixpaths", 10) == 0) {
1172 vol->posix_paths = 1;
1173 } else if (strnicmp(data, "noposixpaths", 12) == 0) {
1174 vol->posix_paths = 0;
1175 } else if ((strnicmp(data, "nocase", 6) == 0) ||
1176 (strnicmp(data, "ignorecase", 10) == 0)) {
1178 } else if (strnicmp(data, "brl", 3) == 0) {
1180 } else if ((strnicmp(data, "nobrl", 5) == 0) ||
1181 (strnicmp(data, "nolock", 6) == 0)) {
1183 /* turn off mandatory locking in mode
1184 if remote locking is turned off since the
1185 local vfs will do advisory */
1186 if(vol->file_mode == (S_IALLUGO & ~(S_ISUID | S_IXGRP)))
1187 vol->file_mode = S_IALLUGO;
1188 } else if (strnicmp(data, "setuids", 7) == 0) {
1190 } else if (strnicmp(data, "nosetuids", 9) == 0) {
1192 } else if (strnicmp(data, "nohard", 6) == 0) {
1194 } else if (strnicmp(data, "nosoft", 6) == 0) {
1196 } else if (strnicmp(data, "nointr", 6) == 0) {
1198 } else if (strnicmp(data, "intr", 4) == 0) {
1200 } else if (strnicmp(data, "serverino",7) == 0) {
1201 vol->server_ino = 1;
1202 } else if (strnicmp(data, "noserverino",9) == 0) {
1203 vol->server_ino = 0;
1204 } else if (strnicmp(data, "cifsacl",7) == 0) {
1206 } else if (strnicmp(data, "nocifsacl", 9) == 0) {
1208 } else if (strnicmp(data, "acl",3) == 0) {
1209 vol->no_psx_acl = 0;
1210 } else if (strnicmp(data, "noacl",5) == 0) {
1211 vol->no_psx_acl = 1;
1212 } else if (strnicmp(data, "sign",4) == 0) {
1213 vol->secFlg |= CIFSSEC_MUST_SIGN;
1214 /* } else if (strnicmp(data, "seal",4) == 0) {
1215 vol->secFlg |= CIFSSEC_MUST_SEAL; */
1216 } else if (strnicmp(data, "direct",6) == 0) {
1218 } else if (strnicmp(data, "forcedirectio",13) == 0) {
1220 } else if (strnicmp(data, "in6_addr",8) == 0) {
1221 if (!value || !*value) {
1222 vol->in6_addr = NULL;
1223 } else if (strnlen(value, 49) == 48) {
1224 vol->in6_addr = value;
1226 printk(KERN_WARNING "CIFS: ip v6 address not 48 characters long\n");
1229 } else if (strnicmp(data, "noac", 4) == 0) {
1230 printk(KERN_WARNING "CIFS: Mount option noac not supported. Instead set /proc/fs/cifs/LookupCacheEnabled to 0\n");
1232 printk(KERN_WARNING "CIFS: Unknown mount option %s\n",data);
1234 if (vol->UNC == NULL) {
1235 if(devname == NULL) {
1236 printk(KERN_WARNING "CIFS: Missing UNC name for mount target\n");
1239 if ((temp_len = strnlen(devname, 300)) < 300) {
1240 vol->UNC = kmalloc(temp_len+1,GFP_KERNEL);
1241 if(vol->UNC == NULL)
1243 strcpy(vol->UNC,devname);
1244 if (strncmp(vol->UNC, "//", 2) == 0) {
1247 } else if (strncmp(vol->UNC, "\\\\", 2) != 0) {
1248 printk(KERN_WARNING "CIFS: UNC Path does not begin with // or \\\\ \n");
1252 printk(KERN_WARNING "CIFS: UNC name too long\n");
1256 if(vol->UNCip == NULL)
1257 vol->UNCip = &vol->UNC[2];
1262 static struct cifsSesInfo *
1263 cifs_find_tcp_session(struct in_addr * target_ip_addr,
1264 struct in6_addr *target_ip6_addr,
1265 char *userName, struct TCP_Server_Info **psrvTcp)
1267 struct list_head *tmp;
1268 struct cifsSesInfo *ses;
1270 read_lock(&GlobalSMBSeslock);
1272 list_for_each(tmp, &GlobalSMBSessionList) {
1273 ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
1275 if((target_ip_addr &&
1276 (ses->server->addr.sockAddr.sin_addr.s_addr
1277 == target_ip_addr->s_addr)) || (target_ip6_addr
1278 && memcmp(&ses->server->addr.sockAddr6.sin6_addr,
1279 target_ip6_addr,sizeof(*target_ip6_addr)))){
1280 /* BB lock server and tcp session and increment use count here?? */
1281 *psrvTcp = ses->server; /* found a match on the TCP session */
1282 /* BB check if reconnection needed */
1284 (ses->userName, userName,
1285 MAX_USERNAME_SIZE) == 0){
1286 read_unlock(&GlobalSMBSeslock);
1287 return ses; /* found exact match on both tcp and SMB sessions */
1291 /* else tcp and smb sessions need reconnection */
1293 read_unlock(&GlobalSMBSeslock);
1297 static struct cifsTconInfo *
1298 find_unc(__be32 new_target_ip_addr, char *uncName, char *userName)
1300 struct list_head *tmp;
1301 struct cifsTconInfo *tcon;
1303 read_lock(&GlobalSMBSeslock);
1304 list_for_each(tmp, &GlobalTreeConnectionList) {
1305 cFYI(1, ("Next tcon"));
1306 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
1308 if (tcon->ses->server) {
1310 ("old ip addr: %x == new ip %x ?",
1311 tcon->ses->server->addr.sockAddr.sin_addr.
1312 s_addr, new_target_ip_addr));
1313 if (tcon->ses->server->addr.sockAddr.sin_addr.
1314 s_addr == new_target_ip_addr) {
1315 /* BB lock tcon, server and tcp session and increment use count here? */
1316 /* found a match on the TCP session */
1317 /* BB check if reconnection needed */
1318 cFYI(1,("IP match, old UNC: %s new: %s",
1319 tcon->treeName, uncName));
1321 (tcon->treeName, uncName,
1322 MAX_TREE_SIZE) == 0) {
1324 ("and old usr: %s new: %s",
1325 tcon->treeName, uncName));
1327 (tcon->ses->userName,
1329 MAX_USERNAME_SIZE) == 0) {
1330 read_unlock(&GlobalSMBSeslock);
1331 /* matched smb session
1340 read_unlock(&GlobalSMBSeslock);
1345 connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo,
1346 const char *old_path, const struct nls_table *nls_codepage,
1349 unsigned char *referrals = NULL;
1350 unsigned int num_referrals;
1353 rc = get_dfs_path(xid, pSesInfo,old_path, nls_codepage,
1354 &num_referrals, &referrals, remap);
1356 /* BB Add in code to: if valid refrl, if not ip address contact
1357 the helper that resolves tcp names, mount to it, try to
1358 tcon to it unmount it if fail */
1366 get_dfs_path(int xid, struct cifsSesInfo *pSesInfo,
1367 const char *old_path, const struct nls_table *nls_codepage,
1368 unsigned int *pnum_referrals,
1369 unsigned char ** preferrals, int remap)
1374 *pnum_referrals = 0;
1376 if (pSesInfo->ipc_tid == 0) {
1377 temp_unc = kmalloc(2 /* for slashes */ +
1378 strnlen(pSesInfo->serverName,SERVER_NAME_LEN_WITH_NULL * 2)
1379 + 1 + 4 /* slash IPC$ */ + 2,
1381 if (temp_unc == NULL)
1385 strcpy(temp_unc + 2, pSesInfo->serverName);
1386 strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$");
1387 rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage);
1389 ("CIFS Tcon rc = %d ipc_tid = %d", rc,pSesInfo->ipc_tid));
1393 rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals,
1394 pnum_referrals, nls_codepage, remap);
1399 /* See RFC1001 section 14 on representation of Netbios names */
1400 static void rfc1002mangle(char * target,char * source, unsigned int length)
1404 for(i=0,j=0;i<(length);i++) {
1405 /* mask a nibble at a time and encode */
1406 target[j] = 'A' + (0x0F & (source[i] >> 4));
1407 target[j+1] = 'A' + (0x0F & source[i]);
1415 ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
1416 char * netbios_name, char * target_name)
1420 __be16 orig_port = 0;
1422 if(*csocket == NULL) {
1423 rc = sock_create_kern(PF_INET, SOCK_STREAM, IPPROTO_TCP, csocket);
1425 cERROR(1, ("Error %d creating socket",rc));
1429 /* BB other socket options to set KEEPALIVE, NODELAY? */
1430 cFYI(1,("Socket created"));
1431 (*csocket)->sk->sk_allocation = GFP_NOFS;
1435 psin_server->sin_family = AF_INET;
1436 if(psin_server->sin_port) { /* user overrode default port */
1437 rc = (*csocket)->ops->connect(*csocket,
1438 (struct sockaddr *) psin_server,
1439 sizeof (struct sockaddr_in),0);
1445 /* save original port so we can retry user specified port
1446 later if fall back ports fail this time */
1447 orig_port = psin_server->sin_port;
1449 /* do not retry on the same port we just failed on */
1450 if(psin_server->sin_port != htons(CIFS_PORT)) {
1451 psin_server->sin_port = htons(CIFS_PORT);
1453 rc = (*csocket)->ops->connect(*csocket,
1454 (struct sockaddr *) psin_server,
1455 sizeof (struct sockaddr_in),0);
1461 psin_server->sin_port = htons(RFC1001_PORT);
1462 rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *)
1463 psin_server, sizeof (struct sockaddr_in),0);
1468 /* give up here - unless we want to retry on different
1469 protocol families some day */
1472 psin_server->sin_port = orig_port;
1473 cFYI(1,("Error %d connecting to server via ipv4",rc));
1474 sock_release(*csocket);
1478 /* Eventually check for other socket options to change from
1479 the default. sock_setsockopt not used because it expects
1480 user space buffer */
1481 cFYI(1,("sndbuf %d rcvbuf %d rcvtimeo 0x%lx",(*csocket)->sk->sk_sndbuf,
1482 (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo));
1483 (*csocket)->sk->sk_rcvtimeo = 7 * HZ;
1484 /* make the bufsizes depend on wsize/rsize and max requests */
1485 if((*csocket)->sk->sk_sndbuf < (200 * 1024))
1486 (*csocket)->sk->sk_sndbuf = 200 * 1024;
1487 if((*csocket)->sk->sk_rcvbuf < (140 * 1024))
1488 (*csocket)->sk->sk_rcvbuf = 140 * 1024;
1490 /* send RFC1001 sessinit */
1491 if(psin_server->sin_port == htons(RFC1001_PORT)) {
1492 /* some servers require RFC1001 sessinit before sending
1493 negprot - BB check reconnection in case where second
1494 sessinit is sent but no second negprot */
1495 struct rfc1002_session_packet * ses_init_buf;
1496 struct smb_hdr * smb_buf;
1497 ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), GFP_KERNEL);
1499 ses_init_buf->trailer.session_req.called_len = 32;
1500 if(target_name && (target_name[0] != 0)) {
1501 rfc1002mangle(ses_init_buf->trailer.session_req.called_name,
1504 rfc1002mangle(ses_init_buf->trailer.session_req.called_name,
1505 DEFAULT_CIFS_CALLED_NAME,16);
1508 ses_init_buf->trailer.session_req.calling_len = 32;
1509 /* calling name ends in null (byte 16) from old smb
1511 if(netbios_name && (netbios_name[0] !=0)) {
1512 rfc1002mangle(ses_init_buf->trailer.session_req.calling_name,
1515 rfc1002mangle(ses_init_buf->trailer.session_req.calling_name,
1516 "LINUX_CIFS_CLNT",16);
1518 ses_init_buf->trailer.session_req.scope1 = 0;
1519 ses_init_buf->trailer.session_req.scope2 = 0;
1520 smb_buf = (struct smb_hdr *)ses_init_buf;
1521 /* sizeof RFC1002_SESSION_REQUEST with no scope */
1522 smb_buf->smb_buf_length = 0x81000044;
1523 rc = smb_send(*csocket, smb_buf, 0x44,
1524 (struct sockaddr *)psin_server);
1525 kfree(ses_init_buf);
1526 msleep(1); /* RFC1001 layer in at least one server
1527 requires very short break before negprot
1528 presumably because not expecting negprot
1529 to follow so fast. This is a simple
1530 solution that works without
1531 complicating the code and causes no
1532 significant slowing down on mount
1533 for everyone else */
1535 /* else the negprot may still work without this
1536 even though malloc failed */
1544 ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket)
1548 __be16 orig_port = 0;
1550 if(*csocket == NULL) {
1551 rc = sock_create_kern(PF_INET6, SOCK_STREAM, IPPROTO_TCP, csocket);
1553 cERROR(1, ("Error %d creating ipv6 socket",rc));
1557 /* BB other socket options to set KEEPALIVE, NODELAY? */
1558 cFYI(1,("ipv6 Socket created"));
1559 (*csocket)->sk->sk_allocation = GFP_NOFS;
1563 psin_server->sin6_family = AF_INET6;
1565 if(psin_server->sin6_port) { /* user overrode default port */
1566 rc = (*csocket)->ops->connect(*csocket,
1567 (struct sockaddr *) psin_server,
1568 sizeof (struct sockaddr_in6),0);
1574 /* save original port so we can retry user specified port
1575 later if fall back ports fail this time */
1577 orig_port = psin_server->sin6_port;
1578 /* do not retry on the same port we just failed on */
1579 if(psin_server->sin6_port != htons(CIFS_PORT)) {
1580 psin_server->sin6_port = htons(CIFS_PORT);
1582 rc = (*csocket)->ops->connect(*csocket,
1583 (struct sockaddr *) psin_server,
1584 sizeof (struct sockaddr_in6),0);
1590 psin_server->sin6_port = htons(RFC1001_PORT);
1591 rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *)
1592 psin_server, sizeof (struct sockaddr_in6),0);
1597 /* give up here - unless we want to retry on different
1598 protocol families some day */
1601 psin_server->sin6_port = orig_port;
1602 cFYI(1,("Error %d connecting to server via ipv6",rc));
1603 sock_release(*csocket);
1607 /* Eventually check for other socket options to change from
1608 the default. sock_setsockopt not used because it expects
1609 user space buffer */
1610 (*csocket)->sk->sk_rcvtimeo = 7 * HZ;
1615 void reset_cifs_unix_caps(int xid, struct cifsTconInfo * tcon,
1616 struct super_block * sb, struct smb_vol * vol_info)
1618 /* if we are reconnecting then should we check to see if
1619 * any requested capabilities changed locally e.g. via
1620 * remount but we can not do much about it here
1621 * if they have (even if we could detect it by the following)
1622 * Perhaps we could add a backpointer to array of sb from tcon
1623 * or if we change to make all sb to same share the same
1624 * sb as NFS - then we only have one backpointer to sb.
1625 * What if we wanted to mount the server share twice once with
1626 * and once without posixacls or posix paths? */
1627 __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
1630 if(!CIFSSMBQFSUnixInfo(xid, tcon)) {
1631 __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
1633 /* check for reconnect case in which we do not
1634 want to change the mount behavior if we can avoid it */
1635 if(vol_info == NULL) {
1636 /* turn off POSIX ACL and PATHNAMES if not set
1637 originally at mount time */
1638 if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0)
1639 cap &= ~CIFS_UNIX_POSIX_ACL_CAP;
1640 if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0)
1641 cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP;
1648 cap &= CIFS_UNIX_CAP_MASK;
1649 if(vol_info && vol_info->no_psx_acl)
1650 cap &= ~CIFS_UNIX_POSIX_ACL_CAP;
1651 else if(CIFS_UNIX_POSIX_ACL_CAP & cap) {
1652 cFYI(1,("negotiated posix acl support"));
1654 sb->s_flags |= MS_POSIXACL;
1657 if(vol_info && vol_info->posix_paths == 0)
1658 cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP;
1659 else if(cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) {
1660 cFYI(1,("negotiate posix pathnames"));
1662 CIFS_SB(sb)->mnt_cifs_flags |=
1663 CIFS_MOUNT_POSIX_PATHS;
1666 cFYI(1,("Negotiate caps 0x%x",(int)cap));
1667 #ifdef CONFIG_CIFS_DEBUG2
1668 if(cap & CIFS_UNIX_FCNTL_CAP)
1669 cFYI(1,("FCNTL cap"));
1670 if(cap & CIFS_UNIX_EXTATTR_CAP)
1671 cFYI(1,("EXTATTR cap"));
1672 if(cap & CIFS_UNIX_POSIX_PATHNAMES_CAP)
1673 cFYI(1,("POSIX path cap"));
1674 if(cap & CIFS_UNIX_XATTR_CAP)
1675 cFYI(1,("XATTR cap"));
1676 if(cap & CIFS_UNIX_POSIX_ACL_CAP)
1677 cFYI(1,("POSIX ACL cap"));
1678 #endif /* CIFS_DEBUG2 */
1679 if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) {
1680 cFYI(1,("setting capabilities failed"));
1686 cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
1687 char *mount_data, const char *devname)
1691 int address_type = AF_INET;
1692 struct socket *csocket = NULL;
1693 struct sockaddr_in sin_server;
1694 struct sockaddr_in6 sin_server6;
1695 struct smb_vol volume_info;
1696 struct cifsSesInfo *pSesInfo = NULL;
1697 struct cifsSesInfo *existingCifsSes = NULL;
1698 struct cifsTconInfo *tcon = NULL;
1699 struct TCP_Server_Info *srvTcp = NULL;
1703 /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */
1705 memset(&volume_info,0,sizeof(struct smb_vol));
1706 if (cifs_parse_mount_options(mount_data, devname, &volume_info)) {
1707 kfree(volume_info.UNC);
1708 kfree(volume_info.password);
1709 kfree(volume_info.prepath);
1714 if (volume_info.username) {
1715 /* BB fixme parse for domain name here */
1716 cFYI(1, ("Username: %s ", volume_info.username));
1718 } else if (volume_info.nullauth) {
1719 cFYI(1,("null user"));
1721 cifserror("No username specified");
1722 /* In userspace mount helper we can get user name from alternate
1723 locations such as env variables and files on disk */
1724 kfree(volume_info.UNC);
1725 kfree(volume_info.password);
1726 kfree(volume_info.prepath);
1731 if (volume_info.UNCip && volume_info.UNC) {
1732 rc = cifs_inet_pton(AF_INET, volume_info.UNCip,&sin_server.sin_addr.s_addr);
1735 /* not ipv4 address, try ipv6 */
1736 rc = cifs_inet_pton(AF_INET6,volume_info.UNCip,&sin_server6.sin6_addr.in6_u);
1738 address_type = AF_INET6;
1740 address_type = AF_INET;
1744 /* we failed translating address */
1745 kfree(volume_info.UNC);
1746 kfree(volume_info.password);
1747 kfree(volume_info.prepath);
1752 cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip));
1755 } else if (volume_info.UNCip){
1756 /* BB using ip addr as server name connect to the DFS root below */
1757 cERROR(1,("Connecting to DFS root not implemented yet"));
1758 kfree(volume_info.UNC);
1759 kfree(volume_info.password);
1760 kfree(volume_info.prepath);
1763 } else /* which servers DFS root would we conect to */ {
1765 ("CIFS mount error: No UNC path (e.g. -o unc=//192.168.1.100/public) specified"));
1766 kfree(volume_info.UNC);
1767 kfree(volume_info.password);
1768 kfree(volume_info.prepath);
1773 /* this is needed for ASCII cp to Unicode converts */
1774 if(volume_info.iocharset == NULL) {
1775 cifs_sb->local_nls = load_nls_default();
1776 /* load_nls_default can not return null */
1778 cifs_sb->local_nls = load_nls(volume_info.iocharset);
1779 if(cifs_sb->local_nls == NULL) {
1780 cERROR(1,("CIFS mount error: iocharset %s not found",volume_info.iocharset));
1781 kfree(volume_info.UNC);
1782 kfree(volume_info.password);
1783 kfree(volume_info.prepath);
1789 if(address_type == AF_INET)
1790 existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr,
1791 NULL /* no ipv6 addr */,
1792 volume_info.username, &srvTcp);
1793 else if(address_type == AF_INET6)
1794 existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */,
1795 &sin_server6.sin6_addr,
1796 volume_info.username, &srvTcp);
1798 kfree(volume_info.UNC);
1799 kfree(volume_info.password);
1800 kfree(volume_info.prepath);
1807 cFYI(1, ("Existing tcp session with server found"));
1808 } else { /* create socket */
1809 if(volume_info.port)
1810 sin_server.sin_port = htons(volume_info.port);
1812 sin_server.sin_port = 0;
1813 rc = ipv4_connect(&sin_server,&csocket,
1814 volume_info.source_rfc1001_name,
1815 volume_info.target_rfc1001_name);
1818 ("Error connecting to IPv4 socket. Aborting operation"));
1820 sock_release(csocket);
1821 kfree(volume_info.UNC);
1822 kfree(volume_info.password);
1823 kfree(volume_info.prepath);
1828 srvTcp = kmalloc(sizeof (struct TCP_Server_Info), GFP_KERNEL);
1829 if (srvTcp == NULL) {
1831 sock_release(csocket);
1832 kfree(volume_info.UNC);
1833 kfree(volume_info.password);
1834 kfree(volume_info.prepath);
1838 memset(srvTcp, 0, sizeof (struct TCP_Server_Info));
1839 memcpy(&srvTcp->addr.sockAddr, &sin_server, sizeof (struct sockaddr_in));
1840 atomic_set(&srvTcp->inFlight,0);
1841 /* BB Add code for ipv6 case too */
1842 srvTcp->ssocket = csocket;
1843 srvTcp->protocolType = IPV4;
1844 init_waitqueue_head(&srvTcp->response_q);
1845 init_waitqueue_head(&srvTcp->request_q);
1846 INIT_LIST_HEAD(&srvTcp->pending_mid_q);
1847 /* at this point we are the only ones with the pointer
1848 to the struct since the kernel thread not created yet
1849 so no need to spinlock this init of tcpStatus */
1850 srvTcp->tcpStatus = CifsNew;
1851 init_MUTEX(&srvTcp->tcpSem);
1852 srvTcp->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, srvTcp, "cifsd");
1853 if( IS_ERR(srvTcp->tsk) ) {
1854 rc = PTR_ERR(srvTcp->tsk);
1855 cERROR(1,("error %d create cifsd thread", rc));
1857 sock_release(csocket);
1858 kfree(volume_info.UNC);
1859 kfree(volume_info.password);
1860 kfree(volume_info.prepath);
1864 wait_for_completion(&cifsd_complete);
1866 memcpy(srvTcp->workstation_RFC1001_name, volume_info.source_rfc1001_name,16);
1867 memcpy(srvTcp->server_RFC1001_name, volume_info.target_rfc1001_name,16);
1868 srvTcp->sequence_number = 0;
1872 if (existingCifsSes) {
1873 pSesInfo = existingCifsSes;
1874 cFYI(1, ("Existing smb sess found"));
1875 kfree(volume_info.password);
1876 /* volume_info.UNC freed at end of function */
1878 cFYI(1, ("Existing smb sess not found"));
1879 pSesInfo = sesInfoAlloc();
1880 if (pSesInfo == NULL)
1883 pSesInfo->server = srvTcp;
1884 sprintf(pSesInfo->serverName, "%u.%u.%u.%u",
1885 NIPQUAD(sin_server.sin_addr.s_addr));
1889 /* volume_info.password freed at unmount */
1890 if (volume_info.password)
1891 pSesInfo->password = volume_info.password;
1892 if (volume_info.username)
1893 strncpy(pSesInfo->userName,
1894 volume_info.username,MAX_USERNAME_SIZE);
1895 if (volume_info.domainname) {
1896 int len = strlen(volume_info.domainname);
1897 pSesInfo->domainName =
1898 kmalloc(len + 1, GFP_KERNEL);
1899 if(pSesInfo->domainName)
1900 strcpy(pSesInfo->domainName,
1901 volume_info.domainname);
1903 pSesInfo->linux_uid = volume_info.linux_uid;
1904 pSesInfo->overrideSecFlg = volume_info.secFlg;
1905 down(&pSesInfo->sesSem);
1906 /* BB FIXME need to pass vol->secFlgs BB */
1907 rc = cifs_setup_session(xid,pSesInfo, cifs_sb->local_nls);
1908 up(&pSesInfo->sesSem);
1910 atomic_inc(&srvTcp->socketUseCount);
1912 kfree(volume_info.password);
1915 /* search for existing tcon to this server share */
1917 if(volume_info.rsize > CIFSMaxBufSize) {
1918 cERROR(1,("rsize %d too large, using MaxBufSize",
1919 volume_info.rsize));
1920 cifs_sb->rsize = CIFSMaxBufSize;
1921 } else if((volume_info.rsize) && (volume_info.rsize <= CIFSMaxBufSize))
1922 cifs_sb->rsize = volume_info.rsize;
1924 cifs_sb->rsize = CIFSMaxBufSize;
1926 if(volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) {
1927 cERROR(1,("wsize %d too large using 4096 instead",
1928 volume_info.wsize));
1929 cifs_sb->wsize = 4096;
1930 } else if(volume_info.wsize)
1931 cifs_sb->wsize = volume_info.wsize;
1934 min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE,
1936 /* old default of CIFSMaxBufSize was too small now
1937 that SMB Write2 can send multiple pages in kvec.
1938 RFC1001 does not describe what happens when frame
1939 bigger than 128K is sent so use that as max in
1940 conjunction with 52K kvec constraint on arch with 4K
1943 if(cifs_sb->rsize < 2048) {
1944 cifs_sb->rsize = 2048;
1945 /* Windows ME may prefer this */
1946 cFYI(1,("readsize set to minimum 2048"));
1948 /* calculate prepath */
1949 cifs_sb->prepath = volume_info.prepath;
1950 if(cifs_sb->prepath) {
1951 cifs_sb->prepathlen = strlen(cifs_sb->prepath);
1952 cifs_sb->prepath[0] = CIFS_DIR_SEP(cifs_sb);
1953 volume_info.prepath = NULL;
1955 cifs_sb->prepathlen = 0;
1956 cifs_sb->mnt_uid = volume_info.linux_uid;
1957 cifs_sb->mnt_gid = volume_info.linux_gid;
1958 cifs_sb->mnt_file_mode = volume_info.file_mode;
1959 cifs_sb->mnt_dir_mode = volume_info.dir_mode;
1960 cFYI(1,("file mode: 0x%x dir mode: 0x%x",
1961 cifs_sb->mnt_file_mode,cifs_sb->mnt_dir_mode));
1963 if(volume_info.noperm)
1964 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM;
1965 if(volume_info.setuids)
1966 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID;
1967 if(volume_info.server_ino)
1968 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM;
1969 if(volume_info.remap)
1970 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR;
1971 if(volume_info.no_xattr)
1972 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR;
1973 if(volume_info.sfu_emul)
1974 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL;
1975 if(volume_info.nobrl)
1976 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL;
1977 if(volume_info.cifs_acl)
1978 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL;
1980 if(volume_info.direct_io) {
1981 cFYI(1,("mounting share using direct i/o"));
1982 cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO;
1986 find_unc(sin_server.sin_addr.s_addr, volume_info.UNC,
1987 volume_info.username);
1989 cFYI(1, ("Found match on UNC path"));
1990 /* we can have only one retry value for a connection
1991 to a share so for resources mounted more than once
1992 to the same server share the last value passed in
1993 for the retry flag is used */
1994 tcon->retry = volume_info.retry;
1995 tcon->nocase = volume_info.nocase;
1997 tcon = tconInfoAlloc();
2001 /* check for null share name ie connecting to
2004 /* BB check if this works for exactly length
2006 if ((strchr(volume_info.UNC + 3, '\\') == NULL)
2007 && (strchr(volume_info.UNC + 3, '/') ==
2009 rc = connect_to_dfs_path(xid, pSesInfo,
2010 "", cifs_sb->local_nls,
2011 cifs_sb->mnt_cifs_flags &
2012 CIFS_MOUNT_MAP_SPECIAL_CHR);
2013 kfree(volume_info.UNC);
2017 /* BB Do we need to wrap sesSem around
2018 * this TCon call and Unix SetFS as
2019 * we do on SessSetup and reconnect? */
2020 rc = CIFSTCon(xid, pSesInfo,
2022 tcon, cifs_sb->local_nls);
2023 cFYI(1, ("CIFS Tcon rc = %d", rc));
2026 atomic_inc(&pSesInfo->inUse);
2027 tcon->retry = volume_info.retry;
2028 tcon->nocase = volume_info.nocase;
2034 if (pSesInfo->capabilities & CAP_LARGE_FILES) {
2035 sb->s_maxbytes = (u64) 1 << 63;
2037 sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */
2040 /* BB FIXME fix time_gran to be larger for LANMAN sessions */
2041 sb->s_time_gran = 100;
2043 /* on error free sesinfo and tcon struct if needed */
2045 /* if session setup failed, use count is zero but
2046 we still need to free cifsd thread */
2047 if(atomic_read(&srvTcp->socketUseCount) == 0) {
2048 spin_lock(&GlobalMid_Lock);
2049 srvTcp->tcpStatus = CifsExiting;
2050 spin_unlock(&GlobalMid_Lock);
2052 send_sig(SIGKILL,srvTcp->tsk,1);
2053 kthread_stop(srvTcp->tsk);
2056 /* If find_unc succeeded then rc == 0 so we can not end */
2057 if (tcon) /* up accidently freeing someone elses tcon struct */
2059 if (existingCifsSes == NULL) {
2061 if ((pSesInfo->server) &&
2062 (pSesInfo->status == CifsGood)) {
2064 temp_rc = CIFSSMBLogoff(xid, pSesInfo);
2065 /* if the socketUseCount is now zero */
2066 if((temp_rc == -ESHUTDOWN) &&
2067 (pSesInfo->server) && (pSesInfo->server->tsk)) {
2068 send_sig(SIGKILL,pSesInfo->server->tsk,1);
2069 kthread_stop(pSesInfo->server->tsk);
2072 cFYI(1, ("No session or bad tcon"));
2073 sesInfoFree(pSesInfo);
2074 /* pSesInfo = NULL; */
2078 atomic_inc(&tcon->useCount);
2079 cifs_sb->tcon = tcon;
2080 tcon->ses = pSesInfo;
2082 /* do not care if following two calls succeed - informational */
2083 CIFSSMBQFSDeviceInfo(xid, tcon);
2084 CIFSSMBQFSAttributeInfo(xid, tcon);
2086 /* tell server which Unix caps we support */
2087 if (tcon->ses->capabilities & CAP_UNIX)
2088 reset_cifs_unix_caps(xid, tcon, sb, &volume_info);
2090 if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X))
2091 cifs_sb->wsize = min(cifs_sb->wsize,
2092 (tcon->ses->server->maxBuf -
2093 MAX_CIFS_HDR_SIZE));
2094 if (!(tcon->ses->capabilities & CAP_LARGE_READ_X))
2095 cifs_sb->rsize = min(cifs_sb->rsize,
2096 (tcon->ses->server->maxBuf -
2097 MAX_CIFS_HDR_SIZE));
2100 /* volume_info.password is freed above when existing session found
2101 (in which case it is not needed anymore) but when new sesion is created
2102 the password ptr is put in the new session structure (in which case the
2103 password will be freed at unmount time) */
2104 kfree(volume_info.UNC);
2105 kfree(volume_info.prepath);
2111 CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
2112 char session_key[CIFS_SESS_KEY_SIZE],
2113 const struct nls_table *nls_codepage)
2115 struct smb_hdr *smb_buffer;
2116 struct smb_hdr *smb_buffer_response;
2117 SESSION_SETUP_ANDX *pSMB;
2118 SESSION_SETUP_ANDX *pSMBr;
2123 int remaining_words = 0;
2124 int bytes_returned = 0;
2129 cFYI(1, ("In sesssetup"));
2132 user = ses->userName;
2133 domain = ses->domainName;
2134 smb_buffer = cifs_buf_get();
2135 if (smb_buffer == NULL) {
2138 smb_buffer_response = smb_buffer;
2139 pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer;
2141 /* send SMBsessionSetup here */
2142 header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX,
2143 NULL /* no tCon exists yet */ , 13 /* wct */ );
2145 smb_buffer->Mid = GetNextMid(ses->server);
2146 pSMB->req_no_secext.AndXCommand = 0xFF;
2147 pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf);
2148 pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq);
2150 if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
2151 smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
2153 capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS |
2154 CAP_LARGE_WRITE_X | CAP_LARGE_READ_X;
2155 if (ses->capabilities & CAP_UNICODE) {
2156 smb_buffer->Flags2 |= SMBFLG2_UNICODE;
2157 capabilities |= CAP_UNICODE;
2159 if (ses->capabilities & CAP_STATUS32) {
2160 smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS;
2161 capabilities |= CAP_STATUS32;
2163 if (ses->capabilities & CAP_DFS) {
2164 smb_buffer->Flags2 |= SMBFLG2_DFS;
2165 capabilities |= CAP_DFS;
2167 pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities);
2169 pSMB->req_no_secext.CaseInsensitivePasswordLength =
2170 cpu_to_le16(CIFS_SESS_KEY_SIZE);
2172 pSMB->req_no_secext.CaseSensitivePasswordLength =
2173 cpu_to_le16(CIFS_SESS_KEY_SIZE);
2174 bcc_ptr = pByteArea(smb_buffer);
2175 memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE);
2176 bcc_ptr += CIFS_SESS_KEY_SIZE;
2177 memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE);
2178 bcc_ptr += CIFS_SESS_KEY_SIZE;
2180 if (ses->capabilities & CAP_UNICODE) {
2181 if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */
2186 bytes_returned = 0; /* skip null user */
2189 cifs_strtoUCS((__le16 *) bcc_ptr, user, 100,
2191 /* convert number of 16 bit words to bytes */
2192 bcc_ptr += 2 * bytes_returned;
2193 bcc_ptr += 2; /* trailing null */
2196 cifs_strtoUCS((__le16 *) bcc_ptr,
2197 "CIFS_LINUX_DOM", 32, nls_codepage);
2200 cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64,
2202 bcc_ptr += 2 * bytes_returned;
2205 cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ",
2207 bcc_ptr += 2 * bytes_returned;
2209 cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release,
2211 bcc_ptr += 2 * bytes_returned;
2214 cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
2216 bcc_ptr += 2 * bytes_returned;
2220 strncpy(bcc_ptr, user, 200);
2221 bcc_ptr += strnlen(user, 200);
2225 if (domain == NULL) {
2226 strcpy(bcc_ptr, "CIFS_LINUX_DOM");
2227 bcc_ptr += strlen("CIFS_LINUX_DOM") + 1;
2229 strncpy(bcc_ptr, domain, 64);
2230 bcc_ptr += strnlen(domain, 64);
2234 strcpy(bcc_ptr, "Linux version ");
2235 bcc_ptr += strlen("Linux version ");
2236 strcpy(bcc_ptr, utsname()->release);
2237 bcc_ptr += strlen(utsname()->release) + 1;
2238 strcpy(bcc_ptr, CIFS_NETWORK_OPSYS);
2239 bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1;
2241 count = (long) bcc_ptr - (long) pByteArea(smb_buffer);
2242 smb_buffer->smb_buf_length += count;
2243 pSMB->req_no_secext.ByteCount = cpu_to_le16(count);
2245 rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response,
2246 &bytes_returned, 1);
2248 /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */
2249 } else if ((smb_buffer_response->WordCount == 3)
2250 || (smb_buffer_response->WordCount == 4)) {
2251 __u16 action = le16_to_cpu(pSMBr->resp.Action);
2252 __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength);
2253 if (action & GUEST_LOGIN)
2254 cFYI(1, (" Guest login")); /* do we want to mark SesInfo struct ? */
2255 ses->Suid = smb_buffer_response->Uid; /* UID left in wire format (le) */
2256 cFYI(1, ("UID = %d ", ses->Suid));
2257 /* response can have either 3 or 4 word count - Samba sends 3 */
2258 bcc_ptr = pByteArea(smb_buffer_response);
2259 if ((pSMBr->resp.hdr.WordCount == 3)
2260 || ((pSMBr->resp.hdr.WordCount == 4)
2261 && (blob_len < pSMBr->resp.ByteCount))) {
2262 if (pSMBr->resp.hdr.WordCount == 4)
2263 bcc_ptr += blob_len;
2265 if (smb_buffer->Flags2 & SMBFLG2_UNICODE) {
2266 if ((long) (bcc_ptr) % 2) {
2268 (BCC(smb_buffer_response) - 1) /2;
2269 bcc_ptr++; /* Unicode strings must be word aligned */
2272 BCC(smb_buffer_response) / 2;
2275 UniStrnlen((wchar_t *) bcc_ptr,
2276 remaining_words - 1);
2277 /* We look for obvious messed up bcc or strings in response so we do not go off
2278 the end since (at least) WIN2K and Windows XP have a major bug in not null
2279 terminating last Unicode string in response */
2281 kfree(ses->serverOS);
2282 ses->serverOS = kzalloc(2 * (len + 1), GFP_KERNEL);
2283 if(ses->serverOS == NULL)
2284 goto sesssetup_nomem;
2285 cifs_strfromUCS_le(ses->serverOS,
2286 (__le16 *)bcc_ptr, len,nls_codepage);
2287 bcc_ptr += 2 * (len + 1);
2288 remaining_words -= len + 1;
2289 ses->serverOS[2 * len] = 0;
2290 ses->serverOS[1 + (2 * len)] = 0;
2291 if (remaining_words > 0) {
2292 len = UniStrnlen((wchar_t *)bcc_ptr,
2294 kfree(ses->serverNOS);
2295 ses->serverNOS = kzalloc(2 * (len + 1),GFP_KERNEL);
2296 if(ses->serverNOS == NULL)
2297 goto sesssetup_nomem;
2298 cifs_strfromUCS_le(ses->serverNOS,
2299 (__le16 *)bcc_ptr,len,nls_codepage);
2300 bcc_ptr += 2 * (len + 1);
2301 ses->serverNOS[2 * len] = 0;
2302 ses->serverNOS[1 + (2 * len)] = 0;
2303 if(strncmp(ses->serverNOS,
2304 "NT LAN Manager 4",16) == 0) {
2305 cFYI(1,("NT4 server"));
2306 ses->flags |= CIFS_SES_NT4;
2308 remaining_words -= len + 1;
2309 if (remaining_words > 0) {
2310 len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words);
2311 /* last string is not always null terminated (for e.g. for Windows XP & 2000) */
2312 if(ses->serverDomain)
2313 kfree(ses->serverDomain);
2315 kzalloc(2*(len+1),GFP_KERNEL);
2316 if(ses->serverDomain == NULL)
2317 goto sesssetup_nomem;
2318 cifs_strfromUCS_le(ses->serverDomain,
2319 (__le16 *)bcc_ptr,len,nls_codepage);
2320 bcc_ptr += 2 * (len + 1);
2321 ses->serverDomain[2*len] = 0;
2322 ses->serverDomain[1+(2*len)] = 0;
2323 } /* else no more room so create dummy domain string */
2325 if(ses->serverDomain)
2326 kfree(ses->serverDomain);
2328 kzalloc(2, GFP_KERNEL);
2330 } else { /* no room so create dummy domain and NOS string */
2331 /* if these kcallocs fail not much we
2332 can do, but better to not fail the
2334 kfree(ses->serverDomain);
2336 kzalloc(2, GFP_KERNEL);
2337 kfree(ses->serverNOS);
2339 kzalloc(2, GFP_KERNEL);
2341 } else { /* ASCII */
2342 len = strnlen(bcc_ptr, 1024);
2343 if (((long) bcc_ptr + len) - (long)
2344 pByteArea(smb_buffer_response)
2345 <= BCC(smb_buffer_response)) {
2346 kfree(ses->serverOS);
2347 ses->serverOS = kzalloc(len + 1,GFP_KERNEL);
2348 if(ses->serverOS == NULL)
2349 goto sesssetup_nomem;
2350 strncpy(ses->serverOS,bcc_ptr, len);
2353 bcc_ptr[0] = 0; /* null terminate the string */
2356 len = strnlen(bcc_ptr, 1024);
2357 kfree(ses->serverNOS);
2358 ses->serverNOS = kzalloc(len + 1,GFP_KERNEL);
2359 if(ses->serverNOS == NULL)
2360 goto sesssetup_nomem;
2361 strncpy(ses->serverNOS, bcc_ptr, len);
2366 len = strnlen(bcc_ptr, 1024);
2367 if(ses->serverDomain)
2368 kfree(ses->serverDomain);
2369 ses->serverDomain = kzalloc(len + 1,GFP_KERNEL);
2370 if(ses->serverDomain == NULL)
2371 goto sesssetup_nomem;
2372 strncpy(ses->serverDomain, bcc_ptr, len);
2378 ("Variable field of length %d extends beyond end of smb ",
2383 (" Security Blob Length extends beyond end of SMB"));
2387 (" Invalid Word count %d: ",
2388 smb_buffer_response->WordCount));
2391 sesssetup_nomem: /* do not return an error on nomem for the info strings,
2392 since that could make reconnection harder, and
2393 reconnection might be needed to free memory */
2395 cifs_buf_release(smb_buffer);
2401 CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
2402 struct cifsSesInfo *ses, int * pNTLMv2_flag,
2403 const struct nls_table *nls_codepage)
2405 struct smb_hdr *smb_buffer;
2406 struct smb_hdr *smb_buffer_response;
2407 SESSION_SETUP_ANDX *pSMB;
2408 SESSION_SETUP_ANDX *pSMBr;
2412 int remaining_words = 0;
2413 int bytes_returned = 0;
2415 int SecurityBlobLength = sizeof (NEGOTIATE_MESSAGE);
2416 PNEGOTIATE_MESSAGE SecurityBlob;
2417 PCHALLENGE_MESSAGE SecurityBlob2;
2418 __u32 negotiate_flags, capabilities;
2421 cFYI(1, ("In NTLMSSP sesssetup (negotiate)"));
2424 domain = ses->domainName;
2425 *pNTLMv2_flag = FALSE;
2426 smb_buffer = cifs_buf_get();
2427 if (smb_buffer == NULL) {
2430 smb_buffer_response = smb_buffer;
2431 pSMB = (SESSION_SETUP_ANDX *) smb_buffer;
2432 pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response;
2434 /* send SMBsessionSetup here */
2435 header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX,
2436 NULL /* no tCon exists yet */ , 12 /* wct */ );
2438 smb_buffer->Mid = GetNextMid(ses->server);
2439 pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
2440 pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT);
2442 pSMB->req.AndXCommand = 0xFF;
2443 pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf);
2444 pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq);
2446 if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
2447 smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
2449 capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS |
2450 CAP_EXTENDED_SECURITY;
2451 if (ses->capabilities & CAP_UNICODE) {
2452 smb_buffer->Flags2 |= SMBFLG2_UNICODE;
2453 capabilities |= CAP_UNICODE;
2455 if (ses->capabilities & CAP_STATUS32) {
2456 smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS;
2457 capabilities |= CAP_STATUS32;
2459 if (ses->capabilities & CAP_DFS) {
2460 smb_buffer->Flags2 |= SMBFLG2_DFS;
2461 capabilities |= CAP_DFS;
2463 pSMB->req.Capabilities = cpu_to_le32(capabilities);
2465 bcc_ptr = (char *) &pSMB->req.SecurityBlob;
2466 SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr;
2467 strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8);
2468 SecurityBlob->MessageType = NtLmNegotiate;
2470 NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM |
2471 NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM |
2472 NTLMSSP_NEGOTIATE_56 |
2473 /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128;
2475 negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN;
2476 /* if(ntlmv2_support)
2477 negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/
2478 /* setup pointers to domain name and workstation name */
2479 bcc_ptr += SecurityBlobLength;
2481 SecurityBlob->WorkstationName.Buffer = 0;
2482 SecurityBlob->WorkstationName.Length = 0;
2483 SecurityBlob->WorkstationName.MaximumLength = 0;
2485 /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent
2486 along with username on auth request (ie the response to challenge) */
2487 SecurityBlob->DomainName.Buffer = 0;
2488 SecurityBlob->DomainName.Length = 0;
2489 SecurityBlob->DomainName.MaximumLength = 0;
2490 if (ses->capabilities & CAP_UNICODE) {
2491 if ((long) bcc_ptr % 2) {
2497 cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ",
2499 bcc_ptr += 2 * bytes_returned;
2501 cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32,
2503 bcc_ptr += 2 * bytes_returned;
2504 bcc_ptr += 2; /* null terminate Linux version */
2506 cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
2508 bcc_ptr += 2 * bytes_returned;
2511 bcc_ptr += 2; /* null terminate network opsys string */
2514 bcc_ptr += 2; /* null domain */
2515 } else { /* ASCII */
2516 strcpy(bcc_ptr, "Linux version ");
2517 bcc_ptr += strlen("Linux version ");
2518 strcpy(bcc_ptr, utsname()->release);
2519 bcc_ptr += strlen(utsname()->release) + 1;
2520 strcpy(bcc_ptr, CIFS_NETWORK_OPSYS);
2521 bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1;
2522 bcc_ptr++; /* empty domain field */
2525 SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags);
2526 pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength);
2527 count = (long) bcc_ptr - (long) pByteArea(smb_buffer);
2528 smb_buffer->smb_buf_length += count;
2529 pSMB->req.ByteCount = cpu_to_le16(count);
2531 rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response,
2532 &bytes_returned, 1);
2534 if (smb_buffer_response->Status.CifsError ==
2535 cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED))
2539 /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */
2540 } else if ((smb_buffer_response->WordCount == 3)
2541 || (smb_buffer_response->WordCount == 4)) {
2542 __u16 action = le16_to_cpu(pSMBr->resp.Action);
2543 __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength);
2545 if (action & GUEST_LOGIN)
2546 cFYI(1, (" Guest login"));
2547 /* Do we want to set anything in SesInfo struct when guest login? */
2549 bcc_ptr = pByteArea(smb_buffer_response);
2550 /* response can have either 3 or 4 word count - Samba sends 3 */
2552 SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr;
2553 if (SecurityBlob2->MessageType != NtLmChallenge) {
2555 ("Unexpected NTLMSSP message type received %d",
2556 SecurityBlob2->MessageType));
2558 ses->Suid = smb_buffer_response->Uid; /* UID left in le format */
2559 cFYI(1, ("UID = %d", ses->Suid));
2560 if ((pSMBr->resp.hdr.WordCount == 3)
2561 || ((pSMBr->resp.hdr.WordCount == 4)
2563 pSMBr->resp.ByteCount))) {
2565 if (pSMBr->resp.hdr.WordCount == 4) {
2566 bcc_ptr += blob_len;
2567 cFYI(1, ("Security Blob Length %d",
2571 cFYI(1, ("NTLMSSP Challenge rcvd"));
2573 memcpy(ses->server->cryptKey,
2574 SecurityBlob2->Challenge,
2575 CIFS_CRYPTO_KEY_SIZE);
2576 if(SecurityBlob2->NegotiateFlags &
2577 cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2))
2578 *pNTLMv2_flag = TRUE;
2580 if((SecurityBlob2->NegotiateFlags &
2581 cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN))
2582 || (sign_CIFS_PDUs > 1))
2583 ses->server->secMode |=
2584 SECMODE_SIGN_REQUIRED;
2585 if ((SecurityBlob2->NegotiateFlags &
2586 cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs))
2587 ses->server->secMode |=
2588 SECMODE_SIGN_ENABLED;
2590 if (smb_buffer->Flags2 & SMBFLG2_UNICODE) {
2591 if ((long) (bcc_ptr) % 2) {
2593 (BCC(smb_buffer_response)
2595 bcc_ptr++; /* Unicode strings must be word aligned */
2599 (smb_buffer_response) / 2;
2602 UniStrnlen((wchar_t *) bcc_ptr,
2603 remaining_words - 1);
2604 /* We look for obvious messed up bcc or strings in response so we do not go off
2605 the end since (at least) WIN2K and Windows XP have a major bug in not null
2606 terminating last Unicode string in response */
2608 kfree(ses->serverOS);
2610 kzalloc(2 * (len + 1), GFP_KERNEL);
2611 cifs_strfromUCS_le(ses->serverOS,
2615 bcc_ptr += 2 * (len + 1);
2616 remaining_words -= len + 1;
2617 ses->serverOS[2 * len] = 0;
2618 ses->serverOS[1 + (2 * len)] = 0;
2619 if (remaining_words > 0) {
2620 len = UniStrnlen((wchar_t *)
2624 kfree(ses->serverNOS);
2626 kzalloc(2 * (len + 1),
2628 cifs_strfromUCS_le(ses->
2634 bcc_ptr += 2 * (len + 1);
2635 ses->serverNOS[2 * len] = 0;
2638 remaining_words -= len + 1;
2639 if (remaining_words > 0) {
2640 len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words);
2641 /* last string is not always null terminated (for e.g. for Windows XP & 2000) */
2642 kfree(ses->serverDomain);
2654 ses->serverDomain[2*len]
2659 } /* else no more room so create dummy domain string */
2661 kfree(ses->serverDomain);
2666 } else { /* no room so create dummy domain and NOS string */
2667 kfree(ses->serverDomain);
2669 kzalloc(2, GFP_KERNEL);
2670 kfree(ses->serverNOS);
2672 kzalloc(2, GFP_KERNEL);
2674 } else { /* ASCII */
2675 len = strnlen(bcc_ptr, 1024);
2676 if (((long) bcc_ptr + len) - (long)
2677 pByteArea(smb_buffer_response)
2678 <= BCC(smb_buffer_response)) {
2680 kfree(ses->serverOS);
2684 strncpy(ses->serverOS,
2688 bcc_ptr[0] = 0; /* null terminate string */
2691 len = strnlen(bcc_ptr, 1024);
2692 kfree(ses->serverNOS);
2696 strncpy(ses->serverNOS, bcc_ptr, len);
2701 len = strnlen(bcc_ptr, 1024);
2702 kfree(ses->serverDomain);
2706 strncpy(ses->serverDomain, bcc_ptr, len);
2712 ("Variable field of length %d extends beyond end of smb",
2717 (" Security Blob Length extends beyond end of SMB"));
2720 cERROR(1, ("No session structure passed in."));
2724 (" Invalid Word count %d:",
2725 smb_buffer_response->WordCount));
2730 cifs_buf_release(smb_buffer);
2735 CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
2736 char *ntlm_session_key, int ntlmv2_flag,
2737 const struct nls_table *nls_codepage)
2739 struct smb_hdr *smb_buffer;
2740 struct smb_hdr *smb_buffer_response;
2741 SESSION_SETUP_ANDX *pSMB;
2742 SESSION_SETUP_ANDX *pSMBr;
2747 int remaining_words = 0;
2748 int bytes_returned = 0;
2750 int SecurityBlobLength = sizeof (AUTHENTICATE_MESSAGE);
2751 PAUTHENTICATE_MESSAGE SecurityBlob;
2752 __u32 negotiate_flags, capabilities;
2755 cFYI(1, ("In NTLMSSPSessSetup (Authenticate)"));
2758 user = ses->userName;
2759 domain = ses->domainName;
2760 smb_buffer = cifs_buf_get();
2761 if (smb_buffer == NULL) {
2764 smb_buffer_response = smb_buffer;
2765 pSMB = (SESSION_SETUP_ANDX *) smb_buffer;
2766 pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response;
2768 /* send SMBsessionSetup here */
2769 header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX,
2770 NULL /* no tCon exists yet */ , 12 /* wct */ );
2772 smb_buffer->Mid = GetNextMid(ses->server);
2773 pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT);
2774 pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
2775 pSMB->req.AndXCommand = 0xFF;
2776 pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf);
2777 pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq);
2779 pSMB->req.hdr.Uid = ses->Suid;
2781 if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
2782 smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
2784 capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS |
2785 CAP_EXTENDED_SECURITY;
2786 if (ses->capabilities & CAP_UNICODE) {
2787 smb_buffer->Flags2 |= SMBFLG2_UNICODE;
2788 capabilities |= CAP_UNICODE;
2790 if (ses->capabilities & CAP_STATUS32) {
2791 smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS;
2792 capabilities |= CAP_STATUS32;
2794 if (ses->capabilities & CAP_DFS) {
2795 smb_buffer->Flags2 |= SMBFLG2_DFS;
2796 capabilities |= CAP_DFS;
2798 pSMB->req.Capabilities = cpu_to_le32(capabilities);
2800 bcc_ptr = (char *) &pSMB->req.SecurityBlob;
2801 SecurityBlob = (PAUTHENTICATE_MESSAGE) bcc_ptr;
2802 strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8);
2803 SecurityBlob->MessageType = NtLmAuthenticate;
2804 bcc_ptr += SecurityBlobLength;
2806 NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET |
2807 NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO |
2808 0x80000000 | NTLMSSP_NEGOTIATE_128;
2810 negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN;
2812 negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;
2814 /* setup pointers to domain name and workstation name */
2816 SecurityBlob->WorkstationName.Buffer = 0;
2817 SecurityBlob->WorkstationName.Length = 0;
2818 SecurityBlob->WorkstationName.MaximumLength = 0;
2819 SecurityBlob->SessionKey.Length = 0;
2820 SecurityBlob->SessionKey.MaximumLength = 0;
2821 SecurityBlob->SessionKey.Buffer = 0;
2823 SecurityBlob->LmChallengeResponse.Length = 0;
2824 SecurityBlob->LmChallengeResponse.MaximumLength = 0;
2825 SecurityBlob->LmChallengeResponse.Buffer = 0;
2827 SecurityBlob->NtChallengeResponse.Length =
2828 cpu_to_le16(CIFS_SESS_KEY_SIZE);
2829 SecurityBlob->NtChallengeResponse.MaximumLength =
2830 cpu_to_le16(CIFS_SESS_KEY_SIZE);
2831 memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE);
2832 SecurityBlob->NtChallengeResponse.Buffer =
2833 cpu_to_le32(SecurityBlobLength);
2834 SecurityBlobLength += CIFS_SESS_KEY_SIZE;
2835 bcc_ptr += CIFS_SESS_KEY_SIZE;
2837 if (ses->capabilities & CAP_UNICODE) {
2838 if (domain == NULL) {
2839 SecurityBlob->DomainName.Buffer = 0;
2840 SecurityBlob->DomainName.Length = 0;
2841 SecurityBlob->DomainName.MaximumLength = 0;
2844 cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64,
2847 SecurityBlob->DomainName.MaximumLength =
2849 SecurityBlob->DomainName.Buffer =
2850 cpu_to_le32(SecurityBlobLength);
2852 SecurityBlobLength += len;
2853 SecurityBlob->DomainName.Length =
2857 SecurityBlob->UserName.Buffer = 0;
2858 SecurityBlob->UserName.Length = 0;
2859 SecurityBlob->UserName.MaximumLength = 0;
2862 cifs_strtoUCS((__le16 *) bcc_ptr, user, 64,
2865 SecurityBlob->UserName.MaximumLength =
2867 SecurityBlob->UserName.Buffer =
2868 cpu_to_le32(SecurityBlobLength);
2870 SecurityBlobLength += len;
2871 SecurityBlob->UserName.Length =
2875 /* SecurityBlob->WorkstationName.Length = cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage);
2876 SecurityBlob->WorkstationName.Length *= 2;
2877 SecurityBlob->WorkstationName.MaximumLength = cpu_to_le16(SecurityBlob->WorkstationName.Length);
2878 SecurityBlob->WorkstationName.Buffer = cpu_to_le32(SecurityBlobLength);
2879 bcc_ptr += SecurityBlob->WorkstationName.Length;
2880 SecurityBlobLength += SecurityBlob->WorkstationName.Length;
2881 SecurityBlob->WorkstationName.Length = cpu_to_le16(SecurityBlob->WorkstationName.Length); */
2883 if ((long) bcc_ptr % 2) {
2888 cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ",
2890 bcc_ptr += 2 * bytes_returned;
2892 cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32,
2894 bcc_ptr += 2 * bytes_returned;
2895 bcc_ptr += 2; /* null term version string */
2897 cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
2899 bcc_ptr += 2 * bytes_returned;
2902 bcc_ptr += 2; /* null terminate network opsys string */
2905 bcc_ptr += 2; /* null domain */
2906 } else { /* ASCII */
2907 if (domain == NULL) {
2908 SecurityBlob->DomainName.Buffer = 0;
2909 SecurityBlob->DomainName.Length = 0;
2910 SecurityBlob->DomainName.MaximumLength = 0;
2913 negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED;
2914 strncpy(bcc_ptr, domain, 63);
2915 len = strnlen(domain, 64);
2916 SecurityBlob->DomainName.MaximumLength =
2918 SecurityBlob->DomainName.Buffer =
2919 cpu_to_le32(SecurityBlobLength);
2921 SecurityBlobLength += len;
2922 SecurityBlob->DomainName.Length = cpu_to_le16(len);
2925 SecurityBlob->UserName.Buffer = 0;
2926 SecurityBlob->UserName.Length = 0;
2927 SecurityBlob->UserName.MaximumLength = 0;
2930 strncpy(bcc_ptr, user, 63);
2931 len = strnlen(user, 64);
2932 SecurityBlob->UserName.MaximumLength =
2934 SecurityBlob->UserName.Buffer =
2935 cpu_to_le32(SecurityBlobLength);
2937 SecurityBlobLength += len;
2938 SecurityBlob->UserName.Length = cpu_to_le16(len);
2940 /* BB fill in our workstation name if known BB */
2942 strcpy(bcc_ptr, "Linux version ");
2943 bcc_ptr += strlen("Linux version ");
2944 strcpy(bcc_ptr, utsname()->release);
2945 bcc_ptr += strlen(utsname()->release) + 1;
2946 strcpy(bcc_ptr, CIFS_NETWORK_OPSYS);
2947 bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1;
2948 bcc_ptr++; /* null domain */
2951 SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags);
2952 pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength);
2953 count = (long) bcc_ptr - (long) pByteArea(smb_buffer);
2954 smb_buffer->smb_buf_length += count;
2955 pSMB->req.ByteCount = cpu_to_le16(count);
2957 rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response,
2958 &bytes_returned, 1);
2960 /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */
2961 } else if ((smb_buffer_response->WordCount == 3)
2962 || (smb_buffer_response->WordCount == 4)) {
2963 __u16 action = le16_to_cpu(pSMBr->resp.Action);
2965 le16_to_cpu(pSMBr->resp.SecurityBlobLength);
2966 if (action & GUEST_LOGIN)
2967 cFYI(1, (" Guest login")); /* BB do we want to set anything in SesInfo struct ? */
2968 /* if(SecurityBlob2->MessageType != NtLm??){
2969 cFYI("Unexpected message type on auth response is %d "));
2973 ("Does UID on challenge %d match auth response UID %d ",
2974 ses->Suid, smb_buffer_response->Uid));
2975 ses->Suid = smb_buffer_response->Uid; /* UID left in wire format */
2976 bcc_ptr = pByteArea(smb_buffer_response);
2977 /* response can have either 3 or 4 word count - Samba sends 3 */
2978 if ((pSMBr->resp.hdr.WordCount == 3)
2979 || ((pSMBr->resp.hdr.WordCount == 4)
2981 pSMBr->resp.ByteCount))) {
2982 if (pSMBr->resp.hdr.WordCount == 4) {
2986 ("Security Blob Length %d ",
2991 ("NTLMSSP response to Authenticate "));
2993 if (smb_buffer->Flags2 & SMBFLG2_UNICODE) {
2994 if ((long) (bcc_ptr) % 2) {
2996 (BCC(smb_buffer_response)
2998 bcc_ptr++; /* Unicode strings must be word aligned */
3000 remaining_words = BCC(smb_buffer_response) / 2;
3003 UniStrnlen((wchar_t *) bcc_ptr,remaining_words - 1);
3004 /* We look for obvious messed up bcc or strings in response so we do not go off
3005 the end since (at least) WIN2K and Windows XP have a major bug in not null
3006 terminating last Unicode string in response */
3008 kfree(ses->serverOS);
3010 kzalloc(2 * (len + 1), GFP_KERNEL);
3011 cifs_strfromUCS_le(ses->serverOS,
3015 bcc_ptr += 2 * (len + 1);
3016 remaining_words -= len + 1;
3017 ses->serverOS[2 * len] = 0;
3018 ses->serverOS[1 + (2 * len)] = 0;
3019 if (remaining_words > 0) {
3020 len = UniStrnlen((wchar_t *)
3024 kfree(ses->serverNOS);
3026 kzalloc(2 * (len + 1),
3028 cifs_strfromUCS_le(ses->
3034 bcc_ptr += 2 * (len + 1);
3035 ses->serverNOS[2 * len] = 0;
3036 ses->serverNOS[1+(2*len)] = 0;
3037 remaining_words -= len + 1;
3038 if (remaining_words > 0) {
3039 len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words);
3040 /* last string not always null terminated (e.g. for Windows XP & 2000) */
3041 if(ses->serverDomain)
3042 kfree(ses->serverDomain);
3067 } /* else no more room so create dummy domain string */
3069 if(ses->serverDomain)
3070 kfree(ses->serverDomain);
3071 ses->serverDomain = kzalloc(2,GFP_KERNEL);
3073 } else { /* no room so create dummy domain and NOS string */
3074 if(ses->serverDomain)
3075 kfree(ses->serverDomain);
3076 ses->serverDomain = kzalloc(2, GFP_KERNEL);
3077 kfree(ses->serverNOS);
3078 ses->serverNOS = kzalloc(2, GFP_KERNEL);
3080 } else { /* ASCII */
3081 len = strnlen(bcc_ptr, 1024);
3082 if (((long) bcc_ptr + len) -
3083 (long) pByteArea(smb_buffer_response)
3084 <= BCC(smb_buffer_response)) {
3086 kfree(ses->serverOS);
3087 ses->serverOS = kzalloc(len + 1,GFP_KERNEL);
3088 strncpy(ses->serverOS,bcc_ptr, len);
3091 bcc_ptr[0] = 0; /* null terminate the string */
3094 len = strnlen(bcc_ptr, 1024);
3095 kfree(ses->serverNOS);
3096 ses->serverNOS = kzalloc(len+1,GFP_KERNEL);
3097 strncpy(ses->serverNOS, bcc_ptr, len);
3102 len = strnlen(bcc_ptr, 1024);
3103 if(ses->serverDomain)
3104 kfree(ses->serverDomain);
3105 ses->serverDomain = kzalloc(len+1,GFP_KERNEL);
3106 strncpy(ses->serverDomain, bcc_ptr, len);
3112 ("Variable field of length %d extends beyond end of smb ",
3117 (" Security Blob Length extends beyond end of SMB"));
3120 cERROR(1, ("No session structure passed in."));
3124 (" Invalid Word count %d: ",
3125 smb_buffer_response->WordCount));
3130 cifs_buf_release(smb_buffer);
3136 CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
3137 const char *tree, struct cifsTconInfo *tcon,
3138 const struct nls_table *nls_codepage)
3140 struct smb_hdr *smb_buffer;
3141 struct smb_hdr *smb_buffer_response;
3144 unsigned char *bcc_ptr;
3152 smb_buffer = cifs_buf_get();
3153 if (smb_buffer == NULL) {
3156 smb_buffer_response = smb_buffer;
3158 header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX,
3159 NULL /*no tid */ , 4 /*wct */ );
3161 smb_buffer->Mid = GetNextMid(ses->server);
3162 smb_buffer->Uid = ses->Suid;
3163 pSMB = (TCONX_REQ *) smb_buffer;
3164 pSMBr = (TCONX_RSP *) smb_buffer_response;
3166 pSMB->AndXCommand = 0xFF;
3167 pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO);
3168 bcc_ptr = &pSMB->Password[0];
3169 if((ses->server->secMode) & SECMODE_USER) {
3170 pSMB->PasswordLength = cpu_to_le16(1); /* minimum */
3171 *bcc_ptr = 0; /* password is null byte */
3172 bcc_ptr++; /* skip password */
3173 /* already aligned so no need to do it below */
3175 pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE);
3176 /* BB FIXME add code to fail this if NTLMv2 or Kerberos
3177 specified as required (when that support is added to
3178 the vfs in the future) as only NTLM or the much
3179 weaker LANMAN (which we do not send by default) is accepted
3180 by Samba (not sure whether other servers allow
3181 NTLMv2 password here) */
3182 #ifdef CONFIG_CIFS_WEAK_PW_HASH
3183 if((extended_security & CIFSSEC_MAY_LANMAN) &&
3184 (ses->server->secType == LANMAN))
3185 calc_lanman_hash(ses, bcc_ptr);
3187 #endif /* CIFS_WEAK_PW_HASH */
3188 SMBNTencrypt(ses->password,
3189 ses->server->cryptKey,
3192 bcc_ptr += CIFS_SESS_KEY_SIZE;
3193 if(ses->capabilities & CAP_UNICODE) {
3194 /* must align unicode strings */
3195 *bcc_ptr = 0; /* null byte password */
3200 if(ses->server->secMode &
3201 (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
3202 smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
3204 if (ses->capabilities & CAP_STATUS32) {
3205 smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS;
3207 if (ses->capabilities & CAP_DFS) {
3208 smb_buffer->Flags2 |= SMBFLG2_DFS;
3210 if (ses->capabilities & CAP_UNICODE) {
3211 smb_buffer->Flags2 |= SMBFLG2_UNICODE;
3213 cifs_strtoUCS((__le16 *) bcc_ptr, tree,
3214 6 /* max utf8 char length in bytes */ *
3215 (/* server len*/ + 256 /* share len */), nls_codepage);
3216 bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */
3217 bcc_ptr += 2; /* skip trailing null */
3218 } else { /* ASCII */
3219 strcpy(bcc_ptr, tree);
3220 bcc_ptr += strlen(tree) + 1;
3222 strcpy(bcc_ptr, "?????");
3223 bcc_ptr += strlen("?????");
3225 count = bcc_ptr - &pSMB->Password[0];
3226 pSMB->hdr.smb_buf_length += count;
3227 pSMB->ByteCount = cpu_to_le16(count);
3229 rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, 0);
3231 /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */
3232 /* above now done in SendReceive */
3233 if ((rc == 0) && (tcon != NULL)) {
3234 tcon->tidStatus = CifsGood;
3235 tcon->tid = smb_buffer_response->Tid;
3236 bcc_ptr = pByteArea(smb_buffer_response);
3237 length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2);
3238 /* skip service field (NB: this field is always ASCII) */
3239 bcc_ptr += length + 1;
3240 strncpy(tcon->treeName, tree, MAX_TREE_SIZE);
3241 if (smb_buffer->Flags2 & SMBFLG2_UNICODE) {
3242 length = UniStrnlen((wchar_t *) bcc_ptr, 512);
3243 if ((bcc_ptr + (2 * length)) -
3244 pByteArea(smb_buffer_response) <=
3245 BCC(smb_buffer_response)) {
3246 kfree(tcon->nativeFileSystem);
3247 tcon->nativeFileSystem =
3248 kzalloc(length + 2, GFP_KERNEL);
3249 cifs_strfromUCS_le(tcon->nativeFileSystem,
3251 length, nls_codepage);
3252 bcc_ptr += 2 * length;
3253 bcc_ptr[0] = 0; /* null terminate the string */
3257 /* else do not bother copying these informational fields */
3259 length = strnlen(bcc_ptr, 1024);
3260 if ((bcc_ptr + length) -
3261 pByteArea(smb_buffer_response) <=
3262 BCC(smb_buffer_response)) {
3263 kfree(tcon->nativeFileSystem);
3264 tcon->nativeFileSystem =
3265 kzalloc(length + 1, GFP_KERNEL);
3266 strncpy(tcon->nativeFileSystem, bcc_ptr,
3269 /* else do not bother copying these informational fields */
3271 if((smb_buffer_response->WordCount == 3) ||
3272 (smb_buffer_response->WordCount == 7))
3273 /* field is in same location */
3274 tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport);
3277 cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags));
3278 } else if ((rc == 0) && tcon == NULL) {
3279 /* all we need to save for IPC$ connection */
3280 ses->ipc_tid = smb_buffer_response->Tid;
3284 cifs_buf_release(smb_buffer);
3289 cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb)
3293 struct cifsSesInfo *ses = NULL;
3294 struct task_struct *cifsd_task;
3299 if (cifs_sb->tcon) {
3300 ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/
3301 rc = CIFSSMBTDis(xid, cifs_sb->tcon);
3306 tconInfoFree(cifs_sb->tcon);
3307 if ((ses) && (ses->server)) {
3308 /* save off task so we do not refer to ses later */
3309 cifsd_task = ses->server->tsk;
3310 cFYI(1, ("About to do SMBLogoff "));
3311 rc = CIFSSMBLogoff(xid, ses);
3315 } else if (rc == -ESHUTDOWN) {
3316 cFYI(1,("Waking up socket by sending it signal"));
3318 send_sig(SIGKILL,cifsd_task,1);
3319 kthread_stop(cifsd_task);
3322 } /* else - we have an smb session
3323 left on this socket do not kill cifsd */
3325 cFYI(1, ("No session or bad tcon"));
3328 cifs_sb->tcon = NULL;
3329 tmp = cifs_sb->prepath;
3330 cifs_sb->prepathlen = 0;
3331 cifs_sb->prepath = NULL;
3334 schedule_timeout_interruptible(msecs_to_jiffies(500));
3339 return rc; /* BB check if we should always return zero here */
3342 int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo,
3343 struct nls_table * nls_info)
3346 char ntlm_session_key[CIFS_SESS_KEY_SIZE];
3347 int ntlmv2_flag = FALSE;
3350 /* what if server changes its buffer size after dropping the session? */
3351 if(pSesInfo->server->maxBuf == 0) /* no need to send on reconnect */ {
3352 rc = CIFSSMBNegotiate(xid, pSesInfo);
3353 if(rc == -EAGAIN) /* retry only once on 1st time connection */ {
3354 rc = CIFSSMBNegotiate(xid, pSesInfo);
3359 spin_lock(&GlobalMid_Lock);
3360 if(pSesInfo->server->tcpStatus != CifsExiting)
3361 pSesInfo->server->tcpStatus = CifsGood;
3364 spin_unlock(&GlobalMid_Lock);
3370 pSesInfo->flags = 0;
3371 pSesInfo->capabilities = pSesInfo->server->capabilities;
3372 if(linuxExtEnabled == 0)
3373 pSesInfo->capabilities &= (~CAP_UNIX);
3374 /* pSesInfo->sequence_number = 0;*/
3375 cFYI(1,("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d",
3376 pSesInfo->server->secMode,
3377 pSesInfo->server->capabilities,
3378 pSesInfo->server->timeAdj));
3379 if(experimEnabled < 2)
3380 rc = CIFS_SessSetup(xid, pSesInfo,
3381 first_time, nls_info);
3382 else if (extended_security
3383 && (pSesInfo->capabilities
3384 & CAP_EXTENDED_SECURITY)
3385 && (pSesInfo->server->secType == NTLMSSP)) {
3387 } else if (extended_security
3388 && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY)
3389 && (pSesInfo->server->secType == RawNTLMSSP)) {
3390 cFYI(1, ("NTLMSSP sesssetup"));
3391 rc = CIFSNTLMSSPNegotiateSessSetup(xid,
3398 cFYI(1,("more secure NTLM ver2 hash"));
3399 if(CalcNTLMv2_partial_mac_key(pSesInfo,
3404 v2_response = kmalloc(16 + 64 /* blob */, GFP_KERNEL);
3406 CalcNTLMv2_response(pSesInfo,v2_response);
3408 cifs_calculate_ntlmv2_mac_key(
3409 pSesInfo->server->mac_signing_key,
3410 response, ntlm_session_key, */
3412 /* BB Put dummy sig in SessSetup PDU? */
3419 SMBNTencrypt(pSesInfo->password,
3420 pSesInfo->server->cryptKey,
3424 cifs_calculate_mac_key(
3425 pSesInfo->server->mac_signing_key,
3427 pSesInfo->password);
3429 /* for better security the weaker lanman hash not sent
3430 in AuthSessSetup so we no longer calculate it */
3432 rc = CIFSNTLMSSPAuthSessSetup(xid,
3438 } else { /* old style NTLM 0.12 session setup */
3439 SMBNTencrypt(pSesInfo->password,
3440 pSesInfo->server->cryptKey,
3444 cifs_calculate_mac_key(
3445 pSesInfo->server->mac_signing_key,
3446 ntlm_session_key, pSesInfo->password);
3448 rc = CIFSSessSetup(xid, pSesInfo,
3449 ntlm_session_key, nls_info);
3452 cERROR(1,("Send error in SessSetup = %d",rc));
3454 cFYI(1,("CIFS Session Established successfully"));
3455 pSesInfo->status = CifsGood;