2 Unix SMB/Netbios implementation.
4 process incoming packets - main loop
5 Copyright (C) Andrew Tridgell 1992-1998
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program 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 the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 /* To be removed.... JRA */
25 #define SMB_ALIGNMENT 1
27 struct timeval smb_last_time
;
29 static char *InBuffer
= NULL
;
30 char *OutBuffer
= NULL
;
31 char *last_inbuf
= NULL
;
34 * Size of data we can send to client. Set
35 * by the client for all protocols above CORE.
36 * Set by us for CORE protocol.
38 int max_send
= BUFFER_SIZE
;
40 * Size of the data we can receive. Set by us.
41 * Can be modified by the max xmit parameter.
43 int max_recv
= BUFFER_SIZE
;
45 extern int last_message
;
46 extern int global_oplock_break
;
47 extern userdom_struct current_user_info
;
48 extern int smb_read_error
;
49 SIG_ATOMIC_T reload_after_sighup
;
50 SIG_ATOMIC_T got_sig_term
;
51 extern BOOL global_machine_password_needs_changing
;
52 extern fstring global_myworkgroup
;
53 extern pstring global_myname
;
56 /****************************************************************************
57 structure to hold a linked list of queued messages.
59 ****************************************************************************/
65 } pending_message_list
;
67 static ubi_slList smb_oplock_queue
= { NULL
, (ubi_slNodePtr
)&smb_oplock_queue
, 0};
69 /****************************************************************************
70 Function to push a message onto the tail of a linked list of smb messages ready
72 ****************************************************************************/
74 static BOOL
push_message(ubi_slList
*list_head
, char *buf
, int msg_len
)
76 pending_message_list
*msg
= (pending_message_list
*)
77 malloc(sizeof(pending_message_list
));
81 DEBUG(0,("push_message: malloc fail (1)\n"));
85 msg
->msg_buf
= (char *)malloc(msg_len
);
86 if(msg
->msg_buf
== NULL
)
88 DEBUG(0,("push_message: malloc fail (2)\n"));
93 memcpy(msg
->msg_buf
, buf
, msg_len
);
94 msg
->msg_len
= msg_len
;
96 ubi_slAddTail( list_head
, msg
);
101 /****************************************************************************
102 Function to push a smb message onto a linked list of local smb messages ready
104 ****************************************************************************/
106 BOOL
push_oplock_pending_smb_message(char *buf
, int msg_len
)
108 return push_message(&smb_oplock_queue
, buf
, msg_len
);
111 /****************************************************************************
112 Do all async processing in here. This includes UDB oplock messages, kernel
113 oplock messages, change notify events etc.
114 ****************************************************************************/
116 static void async_processing(char *buffer
, int buffer_len
)
118 DEBUG(10,("async_processing: Doing async processing.\n"));
120 /* check for oplock messages (both UDP and kernel) */
121 if (receive_local_message(buffer
, buffer_len
, 1)) {
122 process_local_message(buffer
, buffer_len
);
126 exit_server("Caught TERM signal");
129 /* check for async change notify events */
130 process_pending_change_notify_queue(0);
132 /* check for sighup processing */
133 if (reload_after_sighup
) {
134 change_to_root_user();
135 DEBUG(1,("Reloading services after SIGHUP\n"));
136 reload_services(False
);
137 reload_after_sighup
= 0;
141 /****************************************************************************
142 Do a select on an two fd's - with timeout.
144 If a local udp message has been pushed onto the
145 queue (this can only happen during oplock break
146 processing) call async_processing()
148 If a pending smb message has been pushed onto the
149 queue (this can only happen during oplock break
150 processing) return this next.
152 If the first smbfd is ready then read an smb from it.
153 if the second (loopback UDP) fd is ready then read a message
154 from it and setup the buffer header to identify the length
156 Returns False on timeout or error.
159 The timeout is in milli seconds
160 ****************************************************************************/
162 static BOOL
receive_message_or_smb(char *buffer
, int buffer_len
, int timeout
)
174 * Note that this call must be before processing any SMB
175 * messages as we need to synchronously process any messages
176 * we may have sent to ourselves from the previous SMB.
181 * Check to see if we already have a message on the smb queue.
182 * If so - copy and return it.
184 if(ubi_slCount(&smb_oplock_queue
) != 0) {
185 pending_message_list
*msg
= (pending_message_list
*)ubi_slRemHead(&smb_oplock_queue
);
186 memcpy(buffer
, msg
->msg_buf
, MIN(buffer_len
, msg
->msg_len
));
188 /* Free the message we just copied. */
189 SAFE_FREE(msg
->msg_buf
);
192 DEBUG(5,("receive_message_or_smb: returning queued smb message.\n"));
198 * Setup the select read fd set.
204 * Ensure we process oplock break messages by preference.
205 * We have to do this before the select, after the select
206 * and if the select returns EINTR. This is due to the fact
207 * that the selects called from async_processing can eat an EINTR
208 * caused by a signal (we can't take the break message there).
209 * This is hideously complex - *MUST* be simplified for 3.0 ! JRA.
212 if (oplock_message_waiting(&fds
)) {
213 DEBUG(10,("receive_message_or_smb: oplock_message is waiting.\n"));
214 async_processing(buffer
, buffer_len
);
216 * After async processing we must go and do the select again, as
217 * the state of the flag in fds for the server file descriptor is
218 * indeterminate - we may have done I/O on it in the oplock processing. JRA.
223 FD_SET(smbd_server_fd(),&fds
);
224 maxfd
= setup_oplock_select_set(&fds
);
226 to
.tv_sec
= timeout
/ 1000;
227 to
.tv_usec
= (timeout
% 1000) * 1000;
229 selrtn
= sys_select(MAX(maxfd
,smbd_server_fd())+1,&fds
,NULL
,NULL
,timeout
>0?&to
:NULL
);
231 /* if we get EINTR then maybe we have received an oplock
232 signal - treat this as select returning 1. This is ugly, but
233 is the best we can do until the oplock code knows more about
235 if (selrtn
== -1 && errno
== EINTR
) {
236 async_processing(buffer
, buffer_len
);
238 * After async processing we must go and do the select again, as
239 * the state of the flag in fds for the server file descriptor is
240 * indeterminate - we may have done I/O on it in the oplock processing. JRA.
247 /* something is wrong. Maybe the socket is dead? */
248 smb_read_error
= READ_ERROR
;
252 /* Did we timeout ? */
254 smb_read_error
= READ_TIMEOUT
;
259 * Ensure we process oplock break messages by preference.
260 * This is IMPORTANT ! Otherwise we can starve other processes
261 * sending us an oplock break message. JRA.
264 if (oplock_message_waiting(&fds
)) {
265 DEBUG(10,("receive_message_or_smb: oplock_message is waiting.\n"));
266 async_processing(buffer
, buffer_len
);
268 * After async processing we must go and do the select again, as
269 * the state of the flag in fds for the server file descriptor is
270 * indeterminate - we may have done I/O on it in the oplock processing. JRA.
275 return receive_smb(smbd_server_fd(), buffer
, 0);
278 /****************************************************************************
279 Get the next SMB packet, doing the local message processing automatically.
280 ****************************************************************************/
282 BOOL
receive_next_smb(char *inbuf
, int bufsize
, int timeout
)
288 ret
= receive_message_or_smb(inbuf
,bufsize
,timeout
);
290 got_keepalive
= (ret
&& (CVAL(inbuf
,0) == 0x85));
291 } while (ret
&& got_keepalive
);
296 /****************************************************************************
297 We're terminating and have closed all our files/connections etc.
298 If there are any pending local messages we need to respond to them
299 before termination so that other smbds don't think we just died whilst
301 ****************************************************************************/
303 void respond_to_all_remaining_local_messages(void)
308 * Assert we have no exclusive open oplocks.
311 if(get_number_of_exclusive_open_oplocks()) {
312 DEBUG(0,("respond_to_all_remaining_local_messages: PANIC : we have %d exclusive oplocks.\n",
313 get_number_of_exclusive_open_oplocks() ));
318 * Keep doing receive_local_message with a 1 ms timeout until
319 * we have no more messages.
321 while(receive_local_message(buffer
, sizeof(buffer
), 1)) {
322 /* Deal with oplock break requests from other smbd's. */
323 process_local_message(buffer
, sizeof(buffer
));
331 These flags determine some of the permissions required to do an operation
333 Note that I don't set NEED_WRITE on some write operations because they
334 are used by some brain-dead clients when printing, and I don't want to
335 force write permissions on print services.
337 #define AS_USER (1<<0)
338 #define NEED_WRITE (1<<1)
339 #define TIME_INIT (1<<2)
340 #define CAN_IPC (1<<3)
341 #define AS_GUEST (1<<5)
342 #define QUEUE_IN_OPLOCK (1<<6)
345 define a list of possible SMB messages and their corresponding
346 functions. Any message that has a NULL function is unimplemented -
347 please feel free to contribute implementations!
349 struct smb_message_struct
352 int (*fn
)(connection_struct
*conn
, char *, char *, int, int);
355 smb_messages
[256] = {
357 /* 0x00 */ { "SMBmkdir",reply_mkdir
,AS_USER
| NEED_WRITE
},
358 /* 0x01 */ { "SMBrmdir",reply_rmdir
,AS_USER
| NEED_WRITE
},
359 /* 0x02 */ { "SMBopen",reply_open
,AS_USER
| QUEUE_IN_OPLOCK
},
360 /* 0x03 */ { "SMBcreate",reply_mknew
,AS_USER
},
361 /* 0x04 */ { "SMBclose",reply_close
,AS_USER
| CAN_IPC
},
362 /* 0x05 */ { "SMBflush",reply_flush
,AS_USER
},
363 /* 0x06 */ { "SMBunlink",reply_unlink
,AS_USER
| NEED_WRITE
| QUEUE_IN_OPLOCK
},
364 /* 0x07 */ { "SMBmv",reply_mv
,AS_USER
| NEED_WRITE
| QUEUE_IN_OPLOCK
},
365 /* 0x08 */ { "SMBgetatr",reply_getatr
,AS_USER
},
366 /* 0x09 */ { "SMBsetatr",reply_setatr
,AS_USER
| NEED_WRITE
},
367 /* 0x0a */ { "SMBread",reply_read
,AS_USER
},
368 /* 0x0b */ { "SMBwrite",reply_write
,AS_USER
| CAN_IPC
},
369 /* 0x0c */ { "SMBlock",reply_lock
,AS_USER
},
370 /* 0x0d */ { "SMBunlock",reply_unlock
,AS_USER
},
371 /* 0x0e */ { "SMBctemp",reply_ctemp
,AS_USER
| QUEUE_IN_OPLOCK
},
372 /* 0x0f */ { "SMBmknew",reply_mknew
,AS_USER
},
373 /* 0x10 */ { "SMBchkpth",reply_chkpth
,AS_USER
},
374 /* 0x11 */ { "SMBexit",reply_exit
,0},
375 /* 0x12 */ { "SMBlseek",reply_lseek
,AS_USER
},
376 /* 0x13 */ { "SMBlockread",reply_lockread
,AS_USER
},
377 /* 0x14 */ { "SMBwriteunlock",reply_writeunlock
,AS_USER
},
378 /* 0x15 */ { NULL
, NULL
, 0 },
379 /* 0x16 */ { NULL
, NULL
, 0 },
380 /* 0x17 */ { NULL
, NULL
, 0 },
381 /* 0x18 */ { NULL
, NULL
, 0 },
382 /* 0x19 */ { NULL
, NULL
, 0 },
383 /* 0x1a */ { "SMBreadbraw",reply_readbraw
,AS_USER
},
384 /* 0x1b */ { "SMBreadBmpx",reply_readbmpx
,AS_USER
},
385 /* 0x1c */ { "SMBreadBs",NULL
,0},
386 /* 0x1d */ { "SMBwritebraw",reply_writebraw
,AS_USER
},
387 /* 0x1e */ { "SMBwriteBmpx",reply_writebmpx
,AS_USER
},
388 /* 0x1f */ { "SMBwriteBs",reply_writebs
,AS_USER
},
389 /* 0x20 */ { "SMBwritec",NULL
,0},
390 /* 0x21 */ { NULL
, NULL
, 0 },
391 /* 0x22 */ { "SMBsetattrE",reply_setattrE
,AS_USER
| NEED_WRITE
},
392 /* 0x23 */ { "SMBgetattrE",reply_getattrE
,AS_USER
},
393 /* 0x24 */ { "SMBlockingX",reply_lockingX
,AS_USER
},
394 /* 0x25 */ { "SMBtrans",reply_trans
,AS_USER
| CAN_IPC
| QUEUE_IN_OPLOCK
},
395 /* 0x26 */ { "SMBtranss",NULL
,AS_USER
| CAN_IPC
},
396 /* 0x27 */ { "SMBioctl",reply_ioctl
,0},
397 /* 0x28 */ { "SMBioctls",NULL
,AS_USER
},
398 /* 0x29 */ { "SMBcopy",reply_copy
,AS_USER
| NEED_WRITE
| QUEUE_IN_OPLOCK
},
399 /* 0x2a */ { "SMBmove",NULL
,AS_USER
| NEED_WRITE
| QUEUE_IN_OPLOCK
},
400 /* 0x2b */ { "SMBecho",reply_echo
,0},
401 /* 0x2c */ { "SMBwriteclose",reply_writeclose
,AS_USER
},
402 /* 0x2d */ { "SMBopenX",reply_open_and_X
,AS_USER
| CAN_IPC
| QUEUE_IN_OPLOCK
},
403 /* 0x2e */ { "SMBreadX",reply_read_and_X
,AS_USER
| CAN_IPC
},
404 /* 0x2f */ { "SMBwriteX",reply_write_and_X
,AS_USER
| CAN_IPC
},
405 /* 0x30 */ { NULL
, NULL
, 0 },
406 /* 0x31 */ { NULL
, NULL
, 0 },
407 /* 0x32 */ { "SMBtrans2", reply_trans2
, AS_USER
| QUEUE_IN_OPLOCK
| CAN_IPC
},
408 /* 0x33 */ { "SMBtranss2", reply_transs2
, AS_USER
},
409 /* 0x34 */ { "SMBfindclose", reply_findclose
,AS_USER
},
410 /* 0x35 */ { "SMBfindnclose", reply_findnclose
, AS_USER
},
411 /* 0x36 */ { NULL
, NULL
, 0 },
412 /* 0x37 */ { NULL
, NULL
, 0 },
413 /* 0x38 */ { NULL
, NULL
, 0 },
414 /* 0x39 */ { NULL
, NULL
, 0 },
415 /* 0x3a */ { NULL
, NULL
, 0 },
416 /* 0x3b */ { NULL
, NULL
, 0 },
417 /* 0x3c */ { NULL
, NULL
, 0 },
418 /* 0x3d */ { NULL
, NULL
, 0 },
419 /* 0x3e */ { NULL
, NULL
, 0 },
420 /* 0x3f */ { NULL
, NULL
, 0 },
421 /* 0x40 */ { NULL
, NULL
, 0 },
422 /* 0x41 */ { NULL
, NULL
, 0 },
423 /* 0x42 */ { NULL
, NULL
, 0 },
424 /* 0x43 */ { NULL
, NULL
, 0 },
425 /* 0x44 */ { NULL
, NULL
, 0 },
426 /* 0x45 */ { NULL
, NULL
, 0 },
427 /* 0x46 */ { NULL
, NULL
, 0 },
428 /* 0x47 */ { NULL
, NULL
, 0 },
429 /* 0x48 */ { NULL
, NULL
, 0 },
430 /* 0x49 */ { NULL
, NULL
, 0 },
431 /* 0x4a */ { NULL
, NULL
, 0 },
432 /* 0x4b */ { NULL
, NULL
, 0 },
433 /* 0x4c */ { NULL
, NULL
, 0 },
434 /* 0x4d */ { NULL
, NULL
, 0 },
435 /* 0x4e */ { NULL
, NULL
, 0 },
436 /* 0x4f */ { NULL
, NULL
, 0 },
437 /* 0x50 */ { NULL
, NULL
, 0 },
438 /* 0x51 */ { NULL
, NULL
, 0 },
439 /* 0x52 */ { NULL
, NULL
, 0 },
440 /* 0x53 */ { NULL
, NULL
, 0 },
441 /* 0x54 */ { NULL
, NULL
, 0 },
442 /* 0x55 */ { NULL
, NULL
, 0 },
443 /* 0x56 */ { NULL
, NULL
, 0 },
444 /* 0x57 */ { NULL
, NULL
, 0 },
445 /* 0x58 */ { NULL
, NULL
, 0 },
446 /* 0x59 */ { NULL
, NULL
, 0 },
447 /* 0x5a */ { NULL
, NULL
, 0 },
448 /* 0x5b */ { NULL
, NULL
, 0 },
449 /* 0x5c */ { NULL
, NULL
, 0 },
450 /* 0x5d */ { NULL
, NULL
, 0 },
451 /* 0x5e */ { NULL
, NULL
, 0 },
452 /* 0x5f */ { NULL
, NULL
, 0 },
453 /* 0x60 */ { NULL
, NULL
, 0 },
454 /* 0x61 */ { NULL
, NULL
, 0 },
455 /* 0x62 */ { NULL
, NULL
, 0 },
456 /* 0x63 */ { NULL
, NULL
, 0 },
457 /* 0x64 */ { NULL
, NULL
, 0 },
458 /* 0x65 */ { NULL
, NULL
, 0 },
459 /* 0x66 */ { NULL
, NULL
, 0 },
460 /* 0x67 */ { NULL
, NULL
, 0 },
461 /* 0x68 */ { NULL
, NULL
, 0 },
462 /* 0x69 */ { NULL
, NULL
, 0 },
463 /* 0x6a */ { NULL
, NULL
, 0 },
464 /* 0x6b */ { NULL
, NULL
, 0 },
465 /* 0x6c */ { NULL
, NULL
, 0 },
466 /* 0x6d */ { NULL
, NULL
, 0 },
467 /* 0x6e */ { NULL
, NULL
, 0 },
468 /* 0x6f */ { NULL
, NULL
, 0 },
469 /* 0x70 */ { "SMBtcon",reply_tcon
,0},
470 /* 0x71 */ { "SMBtdis",reply_tdis
,0},
471 /* 0x72 */ { "SMBnegprot",reply_negprot
,0},
472 /* 0x73 */ { "SMBsesssetupX",reply_sesssetup_and_X
,0},
473 /* 0x74 */ { "SMBulogoffX", reply_ulogoffX
, 0}, /* ulogoff doesn't give a valid TID */
474 /* 0x75 */ { "SMBtconX",reply_tcon_and_X
,0},
475 /* 0x76 */ { NULL
, NULL
, 0 },
476 /* 0x77 */ { NULL
, NULL
, 0 },
477 /* 0x78 */ { NULL
, NULL
, 0 },
478 /* 0x79 */ { NULL
, NULL
, 0 },
479 /* 0x7a */ { NULL
, NULL
, 0 },
480 /* 0x7b */ { NULL
, NULL
, 0 },
481 /* 0x7c */ { NULL
, NULL
, 0 },
482 /* 0x7d */ { NULL
, NULL
, 0 },
483 /* 0x7e */ { NULL
, NULL
, 0 },
484 /* 0x7f */ { NULL
, NULL
, 0 },
485 /* 0x80 */ { "SMBdskattr",reply_dskattr
,AS_USER
},
486 /* 0x81 */ { "SMBsearch",reply_search
,AS_USER
},
487 /* 0x82 */ { "SMBffirst",reply_search
,AS_USER
},
488 /* 0x83 */ { "SMBfunique",reply_search
,AS_USER
},
489 /* 0x84 */ { "SMBfclose",reply_fclose
,AS_USER
},
490 /* 0x85 */ { NULL
, NULL
, 0 },
491 /* 0x86 */ { NULL
, NULL
, 0 },
492 /* 0x87 */ { NULL
, NULL
, 0 },
493 /* 0x88 */ { NULL
, NULL
, 0 },
494 /* 0x89 */ { NULL
, NULL
, 0 },
495 /* 0x8a */ { NULL
, NULL
, 0 },
496 /* 0x8b */ { NULL
, NULL
, 0 },
497 /* 0x8c */ { NULL
, NULL
, 0 },
498 /* 0x8d */ { NULL
, NULL
, 0 },
499 /* 0x8e */ { NULL
, NULL
, 0 },
500 /* 0x8f */ { NULL
, NULL
, 0 },
501 /* 0x90 */ { NULL
, NULL
, 0 },
502 /* 0x91 */ { NULL
, NULL
, 0 },
503 /* 0x92 */ { NULL
, NULL
, 0 },
504 /* 0x93 */ { NULL
, NULL
, 0 },
505 /* 0x94 */ { NULL
, NULL
, 0 },
506 /* 0x95 */ { NULL
, NULL
, 0 },
507 /* 0x96 */ { NULL
, NULL
, 0 },
508 /* 0x97 */ { NULL
, NULL
, 0 },
509 /* 0x98 */ { NULL
, NULL
, 0 },
510 /* 0x99 */ { NULL
, NULL
, 0 },
511 /* 0x9a */ { NULL
, NULL
, 0 },
512 /* 0x9b */ { NULL
, NULL
, 0 },
513 /* 0x9c */ { NULL
, NULL
, 0 },
514 /* 0x9d */ { NULL
, NULL
, 0 },
515 /* 0x9e */ { NULL
, NULL
, 0 },
516 /* 0x9f */ { NULL
, NULL
, 0 },
517 /* 0xa0 */ { "SMBnttrans", reply_nttrans
, AS_USER
| CAN_IPC
| QUEUE_IN_OPLOCK
},
518 /* 0xa1 */ { "SMBnttranss", reply_nttranss
, AS_USER
| CAN_IPC
},
519 /* 0xa2 */ { "SMBntcreateX", reply_ntcreate_and_X
, AS_USER
| CAN_IPC
| QUEUE_IN_OPLOCK
},
520 /* 0xa3 */ { NULL
, NULL
, 0 },
521 /* 0xa4 */ { "SMBntcancel", reply_ntcancel
, 0 },
522 /* 0xa5 */ { NULL
, NULL
, 0 },
523 /* 0xa6 */ { NULL
, NULL
, 0 },
524 /* 0xa7 */ { NULL
, NULL
, 0 },
525 /* 0xa8 */ { NULL
, NULL
, 0 },
526 /* 0xa9 */ { NULL
, NULL
, 0 },
527 /* 0xaa */ { NULL
, NULL
, 0 },
528 /* 0xab */ { NULL
, NULL
, 0 },
529 /* 0xac */ { NULL
, NULL
, 0 },
530 /* 0xad */ { NULL
, NULL
, 0 },
531 /* 0xae */ { NULL
, NULL
, 0 },
532 /* 0xaf */ { NULL
, NULL
, 0 },
533 /* 0xb0 */ { NULL
, NULL
, 0 },
534 /* 0xb1 */ { NULL
, NULL
, 0 },
535 /* 0xb2 */ { NULL
, NULL
, 0 },
536 /* 0xb3 */ { NULL
, NULL
, 0 },
537 /* 0xb4 */ { NULL
, NULL
, 0 },
538 /* 0xb5 */ { NULL
, NULL
, 0 },
539 /* 0xb6 */ { NULL
, NULL
, 0 },
540 /* 0xb7 */ { NULL
, NULL
, 0 },
541 /* 0xb8 */ { NULL
, NULL
, 0 },
542 /* 0xb9 */ { NULL
, NULL
, 0 },
543 /* 0xba */ { NULL
, NULL
, 0 },
544 /* 0xbb */ { NULL
, NULL
, 0 },
545 /* 0xbc */ { NULL
, NULL
, 0 },
546 /* 0xbd */ { NULL
, NULL
, 0 },
547 /* 0xbe */ { NULL
, NULL
, 0 },
548 /* 0xbf */ { NULL
, NULL
, 0 },
549 /* 0xc0 */ { "SMBsplopen",reply_printopen
,AS_USER
| QUEUE_IN_OPLOCK
},
550 /* 0xc1 */ { "SMBsplwr",reply_printwrite
,AS_USER
},
551 /* 0xc2 */ { "SMBsplclose",reply_printclose
,AS_USER
},
552 /* 0xc3 */ { "SMBsplretq",reply_printqueue
,AS_USER
},
553 /* 0xc4 */ { NULL
, NULL
, 0 },
554 /* 0xc5 */ { NULL
, NULL
, 0 },
555 /* 0xc6 */ { NULL
, NULL
, 0 },
556 /* 0xc7 */ { NULL
, NULL
, 0 },
557 /* 0xc8 */ { NULL
, NULL
, 0 },
558 /* 0xc9 */ { NULL
, NULL
, 0 },
559 /* 0xca */ { NULL
, NULL
, 0 },
560 /* 0xcb */ { NULL
, NULL
, 0 },
561 /* 0xcc */ { NULL
, NULL
, 0 },
562 /* 0xcd */ { NULL
, NULL
, 0 },
563 /* 0xce */ { NULL
, NULL
, 0 },
564 /* 0xcf */ { NULL
, NULL
, 0 },
565 /* 0xd0 */ { "SMBsends",reply_sends
,AS_GUEST
},
566 /* 0xd1 */ { "SMBsendb",NULL
,AS_GUEST
},
567 /* 0xd2 */ { "SMBfwdname",NULL
,AS_GUEST
},
568 /* 0xd3 */ { "SMBcancelf",NULL
,AS_GUEST
},
569 /* 0xd4 */ { "SMBgetmac",NULL
,AS_GUEST
},
570 /* 0xd5 */ { "SMBsendstrt",reply_sendstrt
,AS_GUEST
},
571 /* 0xd6 */ { "SMBsendend",reply_sendend
,AS_GUEST
},
572 /* 0xd7 */ { "SMBsendtxt",reply_sendtxt
,AS_GUEST
},
573 /* 0xd8 */ { NULL
, NULL
, 0 },
574 /* 0xd9 */ { NULL
, NULL
, 0 },
575 /* 0xda */ { NULL
, NULL
, 0 },
576 /* 0xdb */ { NULL
, NULL
, 0 },
577 /* 0xdc */ { NULL
, NULL
, 0 },
578 /* 0xdd */ { NULL
, NULL
, 0 },
579 /* 0xde */ { NULL
, NULL
, 0 },
580 /* 0xdf */ { NULL
, NULL
, 0 },
581 /* 0xe0 */ { NULL
, NULL
, 0 },
582 /* 0xe1 */ { NULL
, NULL
, 0 },
583 /* 0xe2 */ { NULL
, NULL
, 0 },
584 /* 0xe3 */ { NULL
, NULL
, 0 },
585 /* 0xe4 */ { NULL
, NULL
, 0 },
586 /* 0xe5 */ { NULL
, NULL
, 0 },
587 /* 0xe6 */ { NULL
, NULL
, 0 },
588 /* 0xe7 */ { NULL
, NULL
, 0 },
589 /* 0xe8 */ { NULL
, NULL
, 0 },
590 /* 0xe9 */ { NULL
, NULL
, 0 },
591 /* 0xea */ { NULL
, NULL
, 0 },
592 /* 0xeb */ { NULL
, NULL
, 0 },
593 /* 0xec */ { NULL
, NULL
, 0 },
594 /* 0xed */ { NULL
, NULL
, 0 },
595 /* 0xee */ { NULL
, NULL
, 0 },
596 /* 0xef */ { NULL
, NULL
, 0 },
597 /* 0xf0 */ { NULL
, NULL
, 0 },
598 /* 0xf1 */ { NULL
, NULL
, 0 },
599 /* 0xf2 */ { NULL
, NULL
, 0 },
600 /* 0xf3 */ { NULL
, NULL
, 0 },
601 /* 0xf4 */ { NULL
, NULL
, 0 },
602 /* 0xf5 */ { NULL
, NULL
, 0 },
603 /* 0xf6 */ { NULL
, NULL
, 0 },
604 /* 0xf7 */ { NULL
, NULL
, 0 },
605 /* 0xf8 */ { NULL
, NULL
, 0 },
606 /* 0xf9 */ { NULL
, NULL
, 0 },
607 /* 0xfa */ { NULL
, NULL
, 0 },
608 /* 0xfb */ { NULL
, NULL
, 0 },
609 /* 0xfc */ { NULL
, NULL
, 0 },
610 /* 0xfd */ { NULL
, NULL
, 0 },
611 /* 0xfe */ { NULL
, NULL
, 0 },
612 /* 0xff */ { NULL
, NULL
, 0 }
616 /*******************************************************************
618 ********************************************************************/
619 static void smb_dump(char *name
, int type
, char *data
, ssize_t len
)
623 if (DEBUGLEVEL
< 50) return;
625 if (len
< 4) len
= smb_len(data
)+4;
626 for (i
=1;i
<100;i
++) {
627 slprintf(fname
,sizeof(fname
)-1, "/tmp/%s.%d.%s", name
, i
,
628 type
? "req" : "resp");
629 fd
= open(fname
, O_WRONLY
|O_CREAT
|O_EXCL
, 0644);
630 if (fd
!= -1 || errno
!= EEXIST
) break;
633 ssize_t ret
= write(fd
, data
, len
);
635 DEBUG(0,("smb_dump: problem: write returned %d\n", (int)ret
));
637 DEBUG(0,("created %s len %d\n", fname
, len
));
642 /****************************************************************************
643 do a switch on the message type, and return the response size
644 ****************************************************************************/
645 static int switch_message(int type
,char *inbuf
,char *outbuf
,int size
,int bufsize
)
647 static pid_t pid
= (pid_t
)-1;
649 extern uint16 global_smbpid
;
653 if (pid
== (pid_t
)-1)
659 /* make sure this is an SMB packet */
660 if (strncmp(smb_base(inbuf
),"\377SMB",4) != 0)
662 DEBUG(2,("Non-SMB packet of length %d\n",smb_len(inbuf
)));
666 /* yuck! this is an interim measure before we get rid of our
667 current inbuf/outbuf system */
668 global_smbpid
= SVAL(inbuf
,smb_pid
);
670 if (smb_messages
[type
].fn
== NULL
)
672 DEBUG(0,("Unknown message type %d!\n",type
));
673 smb_dump("Unknown", 1, inbuf
, size
);
674 outsize
= reply_unknown(inbuf
,outbuf
);
678 int flags
= smb_messages
[type
].flags
;
679 static uint16 last_session_tag
= UID_FIELD_INVALID
;
680 /* In share mode security we must ignore the vuid. */
681 uint16 session_tag
= (lp_security() == SEC_SHARE
) ? UID_FIELD_INVALID
: SVAL(inbuf
,smb_uid
);
682 connection_struct
*conn
= conn_find(SVAL(inbuf
,smb_tid
));
684 DEBUG(3,("switch message %s (pid %d)\n",smb_fn_name(type
),(int)pid
));
686 smb_dump(smb_fn_name(type
), 1, inbuf
, size
);
687 if(global_oplock_break
)
689 if(flags
& QUEUE_IN_OPLOCK
)
692 * Queue this message as we are the process of an oplock break.
695 DEBUG( 2, ( "switch_message: queueing message due to being in " ) );
696 DEBUGADD( 2, ( "oplock break state.\n" ) );
698 push_oplock_pending_smb_message( inbuf
, size
);
703 /* Ensure this value is replaced in the incoming packet. */
704 SSVAL(inbuf
,smb_uid
,session_tag
);
707 * Ensure the correct username is in current_user_info.
708 * This is a really ugly bugfix for problems with
709 * multiple session_setup_and_X's being done and
710 * allowing %U and %G substitutions to work correctly.
711 * There is a reason this code is done here, don't
712 * move it unless you know what you're doing... :-).
716 if (session_tag
!= last_session_tag
) {
717 user_struct
*vuser
= NULL
;
719 last_session_tag
= session_tag
;
720 if(session_tag
!= UID_FIELD_INVALID
)
721 vuser
= get_valid_user_struct(session_tag
);
723 current_user_info
= vuser
->user
;
726 /* does this protocol need to be run as root? */
727 if (!(flags
& AS_USER
))
728 change_to_root_user();
730 /* does this protocol need a valid tree connection? */
731 if ((flags
& AS_USER
) && !conn
) {
732 return ERROR_DOS(ERRSRV
, ERRinvnid
);
736 /* does this protocol need to be run as the connected user? */
737 if ((flags
& AS_USER
) && !change_to_user(conn
,session_tag
)) {
738 if (flags
& AS_GUEST
)
741 return(ERROR_DOS(ERRSRV
,ERRaccess
));
744 /* this code is to work around a bug is MS client 3 without
745 introducing a security hole - it needs to be able to do
746 print queue checks as guest if it isn't logged in properly */
750 /* does it need write permission? */
751 if ((flags
& NEED_WRITE
) && !CAN_WRITE(conn
))
752 return(ERROR_DOS(ERRSRV
,ERRaccess
));
754 /* ipc services are limited */
755 if (IS_IPC(conn
) && (flags
& AS_USER
) && !(flags
& CAN_IPC
)) {
756 return(ERROR_DOS(ERRSRV
,ERRaccess
));
759 /* load service specific parameters */
760 if (conn
&& !set_current_service(conn
,(flags
& AS_USER
)?True
:False
)) {
761 return(ERROR_DOS(ERRSRV
,ERRaccess
));
764 /* does this protocol need to be run as guest? */
765 if ((flags
& AS_GUEST
) &&
766 (!change_to_guest() ||
767 !check_access(smbd_server_fd(), lp_hostsallow(-1), lp_hostsdeny(-1)))) {
768 return(ERROR_DOS(ERRSRV
,ERRaccess
));
773 outsize
= smb_messages
[type
].fn(conn
, inbuf
,outbuf
,size
,bufsize
);
776 smb_dump(smb_fn_name(type
), 0, outbuf
, outsize
);
782 /****************************************************************************
783 construct a reply to the incoming packet
784 ****************************************************************************/
785 static int construct_reply(char *inbuf
,char *outbuf
,int size
,int bufsize
)
787 int type
= CVAL(inbuf
,smb_com
);
789 int msg_type
= CVAL(inbuf
,0);
791 GetTimeOfDay(&smb_last_time
);
798 return(reply_special(inbuf
,outbuf
));
800 construct_reply_common(inbuf
, outbuf
);
802 outsize
= switch_message(type
,inbuf
,outbuf
,size
,bufsize
);
804 outsize
+= chain_size
;
807 smb_setlen(outbuf
,outsize
- 4);
811 /****************************************************************************
812 Keep track of the number of running smbd's. This functionality is used to
813 'hard' limit Samba overhead on resource constrained systems.
814 ****************************************************************************/
815 static BOOL
smbd_process_limit(void)
819 if (lp_max_smbd_processes()) {
821 /* Always add one to the smbd process count, as exit_server() always
825 total_smbds
= 1; /* In case we need to create the entry. */
827 if (!conn_tdb_ctx()) {
828 DEBUG(0,("smbd_process_limit: max smbd processes parameter set with status parameter not \
829 set. Ignoring max smbd restriction.\n"));
833 if (tdb_change_int32_atomic(conn_tdb_ctx(), "INFO/total_smbds", &total_smbds
, 1) == -1)
836 return total_smbds
> lp_max_smbd_processes();
842 /****************************************************************************
843 process an smb from the client - split out from the process() code so
844 it can be used by the oplock break code.
845 ****************************************************************************/
846 void process_smb(char *inbuf
, char *outbuf
)
849 extern BOOL sslEnabled
; /* don't use function for performance reasons */
850 static int sslConnected
= 0;
851 #endif /* WITH_SSL */
852 static int trans_num
;
853 int msg_type
= CVAL(inbuf
,0);
854 int32 len
= smb_len(inbuf
);
857 DO_PROFILE_INC(smb_count
);
859 if (trans_num
== 0) {
860 /* on the first packet, check the global hosts allow/ hosts
861 deny parameters before doing any parsing of the packet
862 passed to us by the client. This prevents attacks on our
863 parsing code from hosts not in the hosts allow list */
864 if (smbd_process_limit() ||
865 !check_access(smbd_server_fd(), lp_hostsallow(-1), lp_hostsdeny(-1))) {
866 /* send a negative session response "not listening on calling
868 static unsigned char buf
[5] = {0x83, 0, 0, 1, 0x81};
869 DEBUG( 1, ( "Connection denied from %s\n",
871 (void)send_smb(smbd_server_fd(),(char *)buf
);
872 exit_server("connection denied");
876 DEBUG( 6, ( "got message type 0x%x of len 0x%x\n", msg_type
, len
) );
877 DEBUG( 3, ( "Transaction %d of length %d\n", trans_num
, nread
) );
880 if(sslEnabled
&& !sslConnected
){
881 sslConnected
= sslutil_negotiate_ssl(smbd_server_fd(), msg_type
);
882 if(sslConnected
< 0){ /* an error occured */
883 exit_server("SSL negotiation failed");
884 }else if(sslConnected
){
889 #endif /* WITH_SSL */
893 else if(msg_type
== 0x85)
894 return; /* Keepalive packet. */
896 nread
= construct_reply(inbuf
,outbuf
,nread
,max_send
);
900 if (CVAL(outbuf
,0) == 0)
903 if (nread
!= smb_len(outbuf
) + 4)
905 DEBUG(0,("ERROR: Invalid message response size! %d %d\n",
906 nread
, smb_len(outbuf
)));
909 if (!send_smb(smbd_server_fd(),outbuf
))
910 exit_server("process_smb: send_smb failed.\n");
917 /****************************************************************************
918 return a string containing the function name of a SMB command
919 ****************************************************************************/
920 char *smb_fn_name(int type
)
922 static char *unknown_name
= "SMBunknown";
924 if (smb_messages
[type
].name
== NULL
)
925 return(unknown_name
);
927 return(smb_messages
[type
].name
);
931 /****************************************************************************
932 Helper function for contruct_reply.
933 ****************************************************************************/
935 void construct_reply_common(char *inbuf
,char *outbuf
)
937 memset(outbuf
,'\0',smb_size
);
939 set_message(outbuf
,0,0,True
);
940 SCVAL(outbuf
,smb_com
,CVAL(inbuf
,smb_com
));
942 memcpy(outbuf
+4,inbuf
+4,4);
943 SCVAL(outbuf
,smb_rcls
,SMB_SUCCESS
);
944 SCVAL(outbuf
,smb_reh
,0);
945 SCVAL(outbuf
,smb_flg
, FLAG_REPLY
| (CVAL(inbuf
,smb_flg
) & FLAG_CASELESS_PATHNAMES
)); /* bit 7 set
947 SSVAL(outbuf
,smb_flg2
,FLAGS2_LONG_PATH_COMPONENTS
);
948 /* say we support long filenames */
950 SSVAL(outbuf
,smb_err
,SMB_SUCCESS
);
951 SSVAL(outbuf
,smb_tid
,SVAL(inbuf
,smb_tid
));
952 SSVAL(outbuf
,smb_pid
,SVAL(inbuf
,smb_pid
));
953 SSVAL(outbuf
,smb_uid
,SVAL(inbuf
,smb_uid
));
954 SSVAL(outbuf
,smb_mid
,SVAL(inbuf
,smb_mid
));
957 /****************************************************************************
958 construct a chained reply and add it to the already made reply
959 **************************************************************************/
960 int chain_reply(char *inbuf
,char *outbuf
,int size
,int bufsize
)
962 static char *orig_inbuf
;
963 static char *orig_outbuf
;
964 int smb_com1
, smb_com2
= CVAL(inbuf
,smb_vwv0
);
965 unsigned smb_off2
= SVAL(inbuf
,smb_vwv1
);
966 char *inbuf2
, *outbuf2
;
968 char inbuf_saved
[smb_wct
];
969 char outbuf_saved
[smb_wct
];
970 int wct
= CVAL(outbuf
,smb_wct
);
971 int outsize
= smb_size
+ 2*wct
+ SVAL(outbuf
,smb_vwv0
+2*wct
);
973 /* maybe its not chained */
974 if (smb_com2
== 0xFF) {
975 SCVAL(outbuf
,smb_vwv0
,0xFF);
979 if (chain_size
== 0) {
980 /* this is the first part of the chain */
982 orig_outbuf
= outbuf
;
986 * The original Win95 redirector dies on a reply to
987 * a lockingX and read chain unless the chain reply is
988 * 4 byte aligned. JRA.
991 outsize
= (outsize
+ 3) & ~3;
993 /* we need to tell the client where the next part of the reply will be */
994 SSVAL(outbuf
,smb_vwv1
,smb_offset(outbuf
+outsize
,outbuf
));
995 SCVAL(outbuf
,smb_vwv0
,smb_com2
);
997 /* remember how much the caller added to the chain, only counting stuff
998 after the parameter words */
999 chain_size
+= outsize
- smb_wct
;
1001 /* work out pointers into the original packets. The
1002 headers on these need to be filled in */
1003 inbuf2
= orig_inbuf
+ smb_off2
+ 4 - smb_wct
;
1004 outbuf2
= orig_outbuf
+ SVAL(outbuf
,smb_vwv1
) + 4 - smb_wct
;
1006 /* remember the original command type */
1007 smb_com1
= CVAL(orig_inbuf
,smb_com
);
1009 /* save the data which will be overwritten by the new headers */
1010 memcpy(inbuf_saved
,inbuf2
,smb_wct
);
1011 memcpy(outbuf_saved
,outbuf2
,smb_wct
);
1013 /* give the new packet the same header as the last part of the SMB */
1014 memmove(inbuf2
,inbuf
,smb_wct
);
1016 /* create the in buffer */
1017 SCVAL(inbuf2
,smb_com
,smb_com2
);
1019 /* create the out buffer */
1020 construct_reply_common(inbuf2
, outbuf2
);
1022 DEBUG(3,("Chained message\n"));
1025 /* process the request */
1026 outsize2
= switch_message(smb_com2
,inbuf2
,outbuf2
,size
-chain_size
,
1027 bufsize
-chain_size
);
1029 /* copy the new reply and request headers over the old ones, but
1030 preserve the smb_com field */
1031 memmove(orig_outbuf
,outbuf2
,smb_wct
);
1032 SCVAL(orig_outbuf
,smb_com
,smb_com1
);
1034 /* restore the saved data, being careful not to overwrite any
1035 data from the reply header */
1036 memcpy(inbuf2
,inbuf_saved
,smb_wct
);
1038 int ofs
= smb_wct
- PTR_DIFF(outbuf2
,orig_outbuf
);
1039 if (ofs
< 0) ofs
= 0;
1040 memmove(outbuf2
+ofs
,outbuf_saved
+ofs
,smb_wct
-ofs
);
1046 /****************************************************************************
1047 Setup the needed select timeout.
1048 ****************************************************************************/
1050 static int setup_select_timeout(void)
1056 * Increase the select timeout back to SMBD_SELECT_TIMEOUT if we
1057 * have removed any blocking locks. JRA.
1060 select_timeout
= blocking_locks_pending() ? SMBD_SELECT_TIMEOUT_WITH_PENDING_LOCKS
*1000 :
1061 SMBD_SELECT_TIMEOUT
*1000;
1063 t
= change_notify_timeout();
1064 if (t
!= -1) select_timeout
= MIN(select_timeout
, t
*1000);
1066 return select_timeout
;
1069 /****************************************************************************
1070 Check if services need reloading.
1071 ****************************************************************************/
1073 void check_reload(int t
)
1075 static time_t last_smb_conf_reload_time
= 0;
1077 if(last_smb_conf_reload_time
== 0)
1078 last_smb_conf_reload_time
= t
;
1080 if (reload_after_sighup
|| (t
>= last_smb_conf_reload_time
+SMBD_RELOAD_CHECK
))
1082 reload_services(True
);
1083 reload_after_sighup
= 0;
1084 last_smb_conf_reload_time
= t
;
1088 /****************************************************************************
1089 Process any timeout housekeeping. Return False if the caller should exit.
1090 ****************************************************************************/
1092 static BOOL
timeout_processing(int deadtime
, int *select_timeout
, time_t *last_timeout_processing_time
)
1094 static time_t last_keepalive_sent_time
= 0;
1095 static time_t last_idle_closed_check
= 0;
1097 BOOL allidle
= True
;
1098 extern int keepalive
;
1100 if (smb_read_error
== READ_EOF
)
1102 DEBUG(3,("end of file from client\n"));
1106 if (smb_read_error
== READ_ERROR
)
1108 DEBUG(3,("receive_smb error (%s) exiting\n",
1113 *last_timeout_processing_time
= t
= time(NULL
);
1115 if(last_keepalive_sent_time
== 0)
1116 last_keepalive_sent_time
= t
;
1118 if(last_idle_closed_check
== 0)
1119 last_idle_closed_check
= t
;
1121 /* become root again if waiting */
1122 change_to_root_user();
1124 /* check if we need to reload services */
1127 /* automatic timeout if all connections are closed */
1128 if (conn_num_open()==0 && (t
- last_idle_closed_check
) >= IDLE_CLOSED_TIMEOUT
)
1130 DEBUG( 2, ( "Closing idle connection\n" ) );
1134 last_idle_closed_check
= t
;
1136 if (keepalive
&& (t
- last_keepalive_sent_time
)>keepalive
)
1138 struct cli_state
*cli
= server_client();
1139 if (!send_keepalive(smbd_server_fd())) {
1140 DEBUG( 2, ( "Keepalive failed - exiting.\n" ) );
1143 /* also send a keepalive to the password server if its still
1145 if (cli
&& cli
->initialised
)
1146 if (!send_keepalive(cli
->fd
)) {
1147 DEBUG( 2, ( "password server keepalive failed.\n"));
1150 last_keepalive_sent_time
= t
;
1153 /* check for connection timeouts */
1154 allidle
= conn_idle_all(t
, deadtime
);
1156 if (allidle
&& conn_num_open()>0) {
1157 DEBUG(2,("Closing idle connection 2.\n"));
1161 if(global_machine_password_needs_changing
&& lp_security() == SEC_DOMAIN
)
1163 unsigned char trust_passwd_hash
[16];
1165 pstring remote_machine_list
;
1168 * We're in domain level security, and the code that
1169 * read the machine password flagged that the machine
1170 * password needs changing.
1174 * First, open the machine password file with an exclusive lock.
1177 if(!secrets_fetch_trust_account_password(global_myworkgroup
, trust_passwd_hash
, &lct
)) {
1178 DEBUG(0,("process: unable to read the machine account password for \
1179 machine %s in domain %s.\n", global_myname
, global_myworkgroup
));
1184 * Make sure someone else hasn't already done this.
1187 if(t
< lct
+ lp_machine_password_timeout()) {
1188 global_machine_password_needs_changing
= False
;
1192 pstrcpy(remote_machine_list
, lp_passwordserver());
1194 change_trust_account_password( global_myworkgroup
, remote_machine_list
);
1195 global_machine_password_needs_changing
= False
;
1199 * Check to see if we have any blocking locks
1200 * outstanding on the queue.
1202 process_blocking_lock_queue(t
);
1205 * Check to see if we have any change notifies
1206 * outstanding on the queue.
1208 process_pending_change_notify_queue(t
);
1211 * Now we are root, check if the log files need pruning.
1212 * Force a log file check.
1214 force_check_log_size();
1218 * Modify the select timeout depending upon
1219 * what we have remaining in our queues.
1222 *select_timeout
= setup_select_timeout();
1227 /****************************************************************************
1228 process commands from the client
1229 ****************************************************************************/
1231 void smbd_process(void)
1233 extern int smb_echo_count
;
1234 time_t last_timeout_processing_time
= time(NULL
);
1235 unsigned int num_smbs
= 0;
1237 InBuffer
= (char *)malloc(BUFFER_SIZE
+ LARGE_WRITEX_HDR_SIZE
+ SAFETY_MARGIN
);
1238 OutBuffer
= (char *)malloc(BUFFER_SIZE
+ LARGE_WRITEX_HDR_SIZE
+ SAFETY_MARGIN
);
1239 if ((InBuffer
== NULL
) || (OutBuffer
== NULL
))
1242 InBuffer
+= SMB_ALIGNMENT
;
1243 OutBuffer
+= SMB_ALIGNMENT
;
1245 max_recv
= MIN(lp_maxxmit(),BUFFER_SIZE
);
1247 /* re-initialise the timezone */
1250 /* register our message handlers */
1251 message_register(MSG_SMB_FORCE_TDIS
, msg_force_tdis
);
1254 int deadtime
= lp_deadtime()*60;
1255 int select_timeout
= setup_select_timeout();
1259 deadtime
= DEFAULT_SMBD_TIMEOUT
;
1263 /* free up temporary memory */
1265 main_loop_talloc_free();
1267 while (!receive_message_or_smb(InBuffer
,BUFFER_SIZE
+LARGE_WRITEX_HDR_SIZE
,select_timeout
)) {
1268 if(!timeout_processing( deadtime
, &select_timeout
, &last_timeout_processing_time
))
1270 num_smbs
= 0; /* Reset smb counter. */
1274 * Ensure we do timeout processing if the SMB we just got was
1275 * only an echo request. This allows us to set the select
1276 * timeout in 'receive_message_or_smb()' to any value we like
1277 * without worrying that the client will send echo requests
1278 * faster than the select timeout, thus starving out the
1279 * essential processing (change notify, blocking locks) that
1280 * the timeout code does. JRA.
1282 num_echos
= smb_echo_count
;
1284 process_smb(InBuffer
, OutBuffer
);
1286 if (smb_echo_count
!= num_echos
) {
1287 if(!timeout_processing( deadtime
, &select_timeout
, &last_timeout_processing_time
))
1289 num_smbs
= 0; /* Reset smb counter. */
1295 * If we are getting smb requests in a constant stream
1296 * with no echos, make sure we attempt timeout processing
1297 * every select_timeout milliseconds - but only check for this
1298 * every 200 smb requests.
1301 if ((num_smbs
% 200) == 0) {
1302 time_t new_check_time
= time(NULL
);
1303 if(new_check_time
- last_timeout_processing_time
>= (select_timeout
/1000)) {
1304 if(!timeout_processing( deadtime
, &select_timeout
, &last_timeout_processing_time
))
1306 num_smbs
= 0; /* Reset smb counter. */
1307 last_timeout_processing_time
= new_check_time
; /* Reset time. */