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 extern SIG_ATOMIC_T reload_after_sighup
;
50 extern 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
| 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
},
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(const char *name
, int type
, const 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 ****************************************************************************/
646 static int switch_message(int type
,char *inbuf
,char *outbuf
,int size
,int bufsize
)
648 static pid_t pid
= (pid_t
)-1;
650 extern uint16 global_smbpid
;
654 if (pid
== (pid_t
)-1)
660 /* make sure this is an SMB packet. smb_size contains NetBIOS header so subtract 4 from it. */
661 if ((strncmp(smb_base(inbuf
),"\377SMB",4) != 0) || (size
< (smb_size
-4))) {
662 DEBUG(0,("Non-SMB packet of length %d. Terminating server\n",smb_len(inbuf
)));
663 exit_server("Non-SMB packet");
667 /* yuck! this is an interim measure before we get rid of our
668 current inbuf/outbuf system */
669 global_smbpid
= SVAL(inbuf
,smb_pid
);
671 if (smb_messages
[type
].fn
== NULL
)
673 DEBUG(0,("Unknown message type %d!\n",type
));
674 smb_dump("Unknown", 1, inbuf
, size
);
675 outsize
= reply_unknown(inbuf
,outbuf
);
679 int flags
= smb_messages
[type
].flags
;
680 static uint16 last_session_tag
= UID_FIELD_INVALID
;
681 /* In share mode security we must ignore the vuid. */
682 uint16 session_tag
= (lp_security() == SEC_SHARE
) ? UID_FIELD_INVALID
: SVAL(inbuf
,smb_uid
);
683 connection_struct
*conn
= conn_find(SVAL(inbuf
,smb_tid
));
685 DEBUG(3,("switch message %s (pid %d)\n",smb_fn_name(type
),(int)pid
));
687 smb_dump(smb_fn_name(type
), 1, inbuf
, size
);
688 if(global_oplock_break
)
690 if(flags
& QUEUE_IN_OPLOCK
)
693 * Queue this message as we are the process of an oplock break.
696 DEBUG( 2, ( "switch_message: queueing message due to being in " ) );
697 DEBUGADD( 2, ( "oplock break state.\n" ) );
699 push_oplock_pending_smb_message( inbuf
, size
);
704 /* Ensure this value is replaced in the incoming packet. */
705 SSVAL(inbuf
,smb_uid
,session_tag
);
708 * Ensure the correct username is in current_user_info.
709 * This is a really ugly bugfix for problems with
710 * multiple session_setup_and_X's being done and
711 * allowing %U and %G substitutions to work correctly.
712 * There is a reason this code is done here, don't
713 * move it unless you know what you're doing... :-).
717 if (session_tag
!= last_session_tag
) {
718 user_struct
*vuser
= NULL
;
720 last_session_tag
= session_tag
;
721 if(session_tag
!= UID_FIELD_INVALID
)
722 vuser
= get_valid_user_struct(session_tag
);
724 current_user_info
= vuser
->user
;
727 /* does this protocol need to be run as root? */
728 if (!(flags
& AS_USER
))
729 change_to_root_user();
731 /* does this protocol need a valid tree connection? */
732 if ((flags
& AS_USER
) && !conn
) {
733 return ERROR_DOS(ERRSRV
, ERRinvnid
);
737 /* does this protocol need to be run as the connected user? */
738 if ((flags
& AS_USER
) && !change_to_user(conn
,session_tag
)) {
739 if (flags
& AS_GUEST
)
742 return(ERROR_DOS(ERRSRV
,ERRaccess
));
745 /* this code is to work around a bug is MS client 3 without
746 introducing a security hole - it needs to be able to do
747 print queue checks as guest if it isn't logged in properly */
751 /* does it need write permission? */
752 if ((flags
& NEED_WRITE
) && !CAN_WRITE(conn
))
753 return(ERROR_DOS(ERRSRV
,ERRaccess
));
755 /* ipc services are limited */
756 if (IS_IPC(conn
) && (flags
& AS_USER
) && !(flags
& CAN_IPC
)) {
757 return(ERROR_DOS(ERRSRV
,ERRaccess
));
760 /* load service specific parameters */
761 if (conn
&& !set_current_service(conn
,(flags
& AS_USER
)?True
:False
)) {
762 return(ERROR_DOS(ERRSRV
,ERRaccess
));
765 /* does this protocol need to be run as guest? */
766 if ((flags
& AS_GUEST
) &&
767 (!change_to_guest() ||
768 !check_access(smbd_server_fd(), lp_hostsallow(-1), lp_hostsdeny(-1)))) {
769 return(ERROR_DOS(ERRSRV
,ERRaccess
));
774 outsize
= smb_messages
[type
].fn(conn
, inbuf
,outbuf
,size
,bufsize
);
777 smb_dump(smb_fn_name(type
), 0, outbuf
, outsize
);
783 /****************************************************************************
784 construct a reply to the incoming packet
785 ****************************************************************************/
786 static int construct_reply(char *inbuf
,char *outbuf
,int size
,int bufsize
)
788 int type
= CVAL(inbuf
,smb_com
);
790 int msg_type
= CVAL(inbuf
,0);
792 GetTimeOfDay(&smb_last_time
);
799 return(reply_special(inbuf
,outbuf
));
801 construct_reply_common(inbuf
, outbuf
);
803 outsize
= switch_message(type
,inbuf
,outbuf
,size
,bufsize
);
805 outsize
+= chain_size
;
808 smb_setlen(outbuf
,outsize
- 4);
812 /****************************************************************************
813 process an smb from the client - split out from the process() code so
814 it can be used by the oplock break code.
815 ****************************************************************************/
816 void process_smb(char *inbuf
, char *outbuf
)
819 extern BOOL sslEnabled
; /* don't use function for performance reasons */
820 static int sslConnected
= 0;
821 #endif /* WITH_SSL */
822 static int trans_num
;
823 int msg_type
= CVAL(inbuf
,0);
824 int32 len
= smb_len(inbuf
);
827 DO_PROFILE_INC(smb_count
);
829 if (trans_num
== 0) {
830 /* on the first packet, check the global hosts allow/ hosts
831 deny parameters before doing any parsing of the packet
832 passed to us by the client. This prevents attacks on our
833 parsing code from hosts not in the hosts allow list */
834 if (!check_access(smbd_server_fd(), lp_hostsallow(-1), lp_hostsdeny(-1))) {
835 /* send a negative session response "not listening on calling
837 static unsigned char buf
[5] = {0x83, 0, 0, 1, 0x81};
838 DEBUG( 1, ( "Connection denied from %s\n",
840 (void)send_smb(smbd_server_fd(),(char *)buf
);
841 exit_server("connection denied");
845 DEBUG( 6, ( "got message type 0x%x of len 0x%x\n", msg_type
, len
) );
846 DEBUG( 3, ( "Transaction %d of length %d\n", trans_num
, nread
) );
849 if(sslEnabled
&& !sslConnected
){
850 sslConnected
= sslutil_negotiate_ssl(smbd_server_fd(), msg_type
);
851 if(sslConnected
< 0){ /* an error occured */
852 exit_server("SSL negotiation failed");
853 }else if(sslConnected
){
858 #endif /* WITH_SSL */
862 else if(msg_type
== 0x85)
863 return; /* Keepalive packet. */
865 nread
= construct_reply(inbuf
,outbuf
,nread
,max_send
);
869 if (CVAL(outbuf
,0) == 0)
872 if (nread
!= smb_len(outbuf
) + 4)
874 DEBUG(0,("ERROR: Invalid message response size! %d %d\n",
875 nread
, smb_len(outbuf
)));
878 if (!send_smb(smbd_server_fd(),outbuf
))
879 exit_server("process_smb: send_smb failed.\n");
886 /****************************************************************************
887 return a string containing the function name of a SMB command
888 ****************************************************************************/
889 const char *smb_fn_name(int type
)
891 static const char *unknown_name
= "SMBunknown";
893 if (smb_messages
[type
].name
== NULL
)
894 return(unknown_name
);
896 return(smb_messages
[type
].name
);
900 /****************************************************************************
901 Helper function for contruct_reply.
902 ****************************************************************************/
904 void construct_reply_common(char *inbuf
,char *outbuf
)
906 memset(outbuf
,'\0',smb_size
);
908 set_message(outbuf
,0,0,True
);
909 SCVAL(outbuf
,smb_com
,CVAL(inbuf
,smb_com
));
911 memcpy(outbuf
+4,inbuf
+4,4);
912 SCVAL(outbuf
,smb_rcls
,SMB_SUCCESS
);
913 SCVAL(outbuf
,smb_reh
,0);
914 SCVAL(outbuf
,smb_flg
, FLAG_REPLY
| (CVAL(inbuf
,smb_flg
) & FLAG_CASELESS_PATHNAMES
)); /* bit 7 set
916 SSVAL(outbuf
,smb_flg2
,FLAGS2_LONG_PATH_COMPONENTS
);
917 /* say we support long filenames */
919 SSVAL(outbuf
,smb_err
,SMB_SUCCESS
);
920 SSVAL(outbuf
,smb_tid
,SVAL(inbuf
,smb_tid
));
921 SSVAL(outbuf
,smb_pid
,SVAL(inbuf
,smb_pid
));
922 SSVAL(outbuf
,smb_uid
,SVAL(inbuf
,smb_uid
));
923 SSVAL(outbuf
,smb_mid
,SVAL(inbuf
,smb_mid
));
926 /****************************************************************************
927 construct a chained reply and add it to the already made reply
928 **************************************************************************/
929 int chain_reply(char *inbuf
,char *outbuf
,int size
,int bufsize
)
931 static char *orig_inbuf
;
932 static char *orig_outbuf
;
933 int smb_com1
, smb_com2
= CVAL(inbuf
,smb_vwv0
);
934 unsigned smb_off2
= SVAL(inbuf
,smb_vwv1
);
935 char *inbuf2
, *outbuf2
;
937 char inbuf_saved
[smb_wct
];
938 char outbuf_saved
[smb_wct
];
939 int wct
= CVAL(outbuf
,smb_wct
);
940 int outsize
= smb_size
+ 2*wct
+ SVAL(outbuf
,smb_vwv0
+2*wct
);
942 /* maybe its not chained */
943 if (smb_com2
== 0xFF) {
944 SCVAL(outbuf
,smb_vwv0
,0xFF);
948 if (chain_size
== 0) {
949 /* this is the first part of the chain */
951 orig_outbuf
= outbuf
;
955 * The original Win95 redirector dies on a reply to
956 * a lockingX and read chain unless the chain reply is
957 * 4 byte aligned. JRA.
960 outsize
= (outsize
+ 3) & ~3;
962 /* we need to tell the client where the next part of the reply will be */
963 SSVAL(outbuf
,smb_vwv1
,smb_offset(outbuf
+outsize
,outbuf
));
964 SCVAL(outbuf
,smb_vwv0
,smb_com2
);
966 /* remember how much the caller added to the chain, only counting stuff
967 after the parameter words */
968 chain_size
+= outsize
- smb_wct
;
970 /* work out pointers into the original packets. The
971 headers on these need to be filled in */
972 inbuf2
= orig_inbuf
+ smb_off2
+ 4 - smb_wct
;
973 outbuf2
= orig_outbuf
+ SVAL(outbuf
,smb_vwv1
) + 4 - smb_wct
;
975 /* remember the original command type */
976 smb_com1
= CVAL(orig_inbuf
,smb_com
);
978 /* save the data which will be overwritten by the new headers */
979 memcpy(inbuf_saved
,inbuf2
,smb_wct
);
980 memcpy(outbuf_saved
,outbuf2
,smb_wct
);
982 /* give the new packet the same header as the last part of the SMB */
983 memmove(inbuf2
,inbuf
,smb_wct
);
985 /* create the in buffer */
986 SCVAL(inbuf2
,smb_com
,smb_com2
);
988 /* create the out buffer */
989 construct_reply_common(inbuf2
, outbuf2
);
991 DEBUG(3,("Chained message\n"));
994 /* process the request */
995 outsize2
= switch_message(smb_com2
,inbuf2
,outbuf2
,size
-chain_size
,
998 /* copy the new reply and request headers over the old ones, but
999 preserve the smb_com field */
1000 memmove(orig_outbuf
,outbuf2
,smb_wct
);
1001 SCVAL(orig_outbuf
,smb_com
,smb_com1
);
1003 /* restore the saved data, being careful not to overwrite any
1004 data from the reply header */
1005 memcpy(inbuf2
,inbuf_saved
,smb_wct
);
1007 int ofs
= smb_wct
- PTR_DIFF(outbuf2
,orig_outbuf
);
1008 if (ofs
< 0) ofs
= 0;
1009 memmove(outbuf2
+ofs
,outbuf_saved
+ofs
,smb_wct
-ofs
);
1015 /****************************************************************************
1016 Setup the needed select timeout.
1017 ****************************************************************************/
1019 static int setup_select_timeout(void)
1024 select_timeout
= blocking_locks_timeout(SMBD_SELECT_TIMEOUT
);
1025 select_timeout
*= 1000;
1027 t
= change_notify_timeout();
1028 if (t
!= -1) select_timeout
= MIN(select_timeout
, t
*1000);
1030 return select_timeout
;
1033 /****************************************************************************
1034 Check if services need reloading.
1035 ****************************************************************************/
1037 void check_reload(int t
)
1039 static time_t last_smb_conf_reload_time
= 0;
1041 if(last_smb_conf_reload_time
== 0)
1042 last_smb_conf_reload_time
= t
;
1044 if (reload_after_sighup
|| (t
>= last_smb_conf_reload_time
+SMBD_RELOAD_CHECK
))
1046 reload_services(True
);
1047 reload_after_sighup
= 0;
1048 last_smb_conf_reload_time
= t
;
1052 /****************************************************************************
1053 Process any timeout housekeeping. Return False if the caller should exit.
1054 ****************************************************************************/
1056 static BOOL
timeout_processing(int deadtime
, int *select_timeout
, time_t *last_timeout_processing_time
)
1058 static time_t last_keepalive_sent_time
= 0;
1059 static time_t last_idle_closed_check
= 0;
1061 BOOL allidle
= True
;
1062 extern int keepalive
;
1064 if (smb_read_error
== READ_EOF
)
1066 DEBUG(3,("end of file from client\n"));
1070 if (smb_read_error
== READ_ERROR
)
1072 DEBUG(3,("receive_smb error (%s) exiting\n",
1077 *last_timeout_processing_time
= t
= time(NULL
);
1079 if(last_keepalive_sent_time
== 0)
1080 last_keepalive_sent_time
= t
;
1082 if(last_idle_closed_check
== 0)
1083 last_idle_closed_check
= t
;
1085 /* become root again if waiting */
1086 change_to_root_user();
1088 /* check if we need to reload services */
1091 /* automatic timeout if all connections are closed */
1092 if (conn_num_open()==0 && (t
- last_idle_closed_check
) >= IDLE_CLOSED_TIMEOUT
)
1094 DEBUG( 2, ( "Closing idle connection\n" ) );
1098 last_idle_closed_check
= t
;
1100 if (keepalive
&& (t
- last_keepalive_sent_time
)>keepalive
)
1102 struct cli_state
*cli
= server_client();
1103 if (!send_keepalive(smbd_server_fd())) {
1104 DEBUG( 2, ( "Keepalive failed - exiting.\n" ) );
1107 /* also send a keepalive to the password server if its still
1109 if (cli
&& cli
->initialised
)
1110 if (!send_keepalive(cli
->fd
)) {
1111 DEBUG( 2, ( "password server keepalive failed.\n"));
1114 last_keepalive_sent_time
= t
;
1117 /* check for connection timeouts */
1118 allidle
= conn_idle_all(t
, deadtime
);
1120 if (allidle
&& conn_num_open()>0) {
1121 DEBUG(2,("Closing idle connection 2.\n"));
1125 if(global_machine_password_needs_changing
&& lp_security() == SEC_DOMAIN
)
1127 unsigned char trust_passwd_hash
[16];
1129 pstring remote_machine_list
;
1132 * We're in domain level security, and the code that
1133 * read the machine password flagged that the machine
1134 * password needs changing.
1137 DEBUG(10,("timeout_processing: checking to see if machine account password need changing.\n"));
1140 * First, open the machine password file with an exclusive lock.
1143 if (secrets_lock_trust_account_password(global_myworkgroup
, True
) == False
) {
1144 DEBUG(0,("process: unable to lock the machine account password for \
1145 machine %s in domain %s.\n", global_myname
, global_myworkgroup
));
1149 if(!secrets_fetch_trust_account_password(global_myworkgroup
, trust_passwd_hash
, &lct
)) {
1150 DEBUG(0,("process: unable to read the machine account password for \
1151 machine %s in domain %s.\n", global_myname
, global_myworkgroup
));
1152 secrets_lock_trust_account_password(global_myworkgroup
, False
);
1157 * Make sure someone else hasn't already done this.
1160 if(t
< lct
+ lp_machine_password_timeout()) {
1161 global_machine_password_needs_changing
= False
;
1162 secrets_lock_trust_account_password(global_myworkgroup
, False
);
1166 DEBUG(10,("timeout_processing: machine account password last change time = (%u) %s.\n",
1167 (unsigned int)lct
, http_timestring(lct
)));
1169 pstrcpy(remote_machine_list
, lp_passwordserver());
1171 change_trust_account_password( global_myworkgroup
, remote_machine_list
);
1172 global_machine_password_needs_changing
= False
;
1173 secrets_lock_trust_account_password(global_myworkgroup
, False
);
1177 * Check to see if we have any blocking locks
1178 * outstanding on the queue.
1180 process_blocking_lock_queue(t
);
1183 * Check to see if we have any change notifies
1184 * outstanding on the queue.
1186 process_pending_change_notify_queue(t
);
1189 * Now we are root, check if the log files need pruning.
1190 * Force a log file check.
1192 force_check_log_size();
1196 * Modify the select timeout depending upon
1197 * what we have remaining in our queues.
1200 *select_timeout
= setup_select_timeout();
1205 /****************************************************************************
1206 process commands from the client
1207 ****************************************************************************/
1209 void smbd_process(void)
1211 extern int smb_echo_count
;
1212 time_t last_timeout_processing_time
= time(NULL
);
1213 unsigned int num_smbs
= 0;
1215 InBuffer
= (char *)malloc(BUFFER_SIZE
+ LARGE_WRITEX_HDR_SIZE
+ SAFETY_MARGIN
);
1216 OutBuffer
= (char *)malloc(BUFFER_SIZE
+ LARGE_WRITEX_HDR_SIZE
+ SAFETY_MARGIN
);
1217 if ((InBuffer
== NULL
) || (OutBuffer
== NULL
))
1220 InBuffer
+= SMB_ALIGNMENT
;
1221 OutBuffer
+= SMB_ALIGNMENT
;
1223 max_recv
= MIN(lp_maxxmit(),BUFFER_SIZE
);
1225 /* re-initialise the timezone */
1228 /* register our message handlers */
1229 message_register(MSG_SMB_FORCE_TDIS
, msg_force_tdis
);
1232 int deadtime
= lp_deadtime()*60;
1233 int select_timeout
= setup_select_timeout();
1237 deadtime
= DEFAULT_SMBD_TIMEOUT
;
1241 /* free up temporary memory */
1243 main_loop_talloc_free();
1245 /* Did someone ask for immediate checks on things like blocking locks ? */
1246 if (select_timeout
== 0) {
1247 if(!timeout_processing( deadtime
, &select_timeout
, &last_timeout_processing_time
))
1249 num_smbs
= 0; /* Reset smb counter. */
1252 while (!receive_message_or_smb(InBuffer
,BUFFER_SIZE
+LARGE_WRITEX_HDR_SIZE
,select_timeout
)) {
1253 if(!timeout_processing( deadtime
, &select_timeout
, &last_timeout_processing_time
))
1255 num_smbs
= 0; /* Reset smb counter. */
1259 * Ensure we do timeout processing if the SMB we just got was
1260 * only an echo request. This allows us to set the select
1261 * timeout in 'receive_message_or_smb()' to any value we like
1262 * without worrying that the client will send echo requests
1263 * faster than the select timeout, thus starving out the
1264 * essential processing (change notify, blocking locks) that
1265 * the timeout code does. JRA.
1267 num_echos
= smb_echo_count
;
1269 process_smb(InBuffer
, OutBuffer
);
1271 if (smb_echo_count
!= num_echos
) {
1272 if(!timeout_processing( deadtime
, &select_timeout
, &last_timeout_processing_time
))
1274 num_smbs
= 0; /* Reset smb counter. */
1280 * If we are getting smb requests in a constant stream
1281 * with no echos, make sure we attempt timeout processing
1282 * every select_timeout milliseconds - but only check for this
1283 * every 200 smb requests.
1286 if ((num_smbs
% 200) == 0) {
1287 time_t new_check_time
= time(NULL
);
1288 if(new_check_time
- last_timeout_processing_time
>= (select_timeout
/1000)) {
1289 if(!timeout_processing( deadtime
, &select_timeout
, &last_timeout_processing_time
))
1291 num_smbs
= 0; /* Reset smb counter. */
1292 last_timeout_processing_time
= new_check_time
; /* Reset time. */